diff --git a/BUILD b/BUILD
index 2dc3b026d8909de178c64b3812c8c68bf2bb6084..e3ef97154123034d7cf2e43f412ed47e246d0c28 100644
--- a/BUILD
+++ b/BUILD
@@ -214,7 +214,6 @@ cc_library(
"src/core/iomgr/iomgr_internal.h",
"src/core/iomgr/iomgr_posix.h",
"src/core/iomgr/pollset.h",
- "src/core/iomgr/pollset_posix.h",
"src/core/iomgr/pollset_set.h",
"src/core/iomgr/pollset_set_posix.h",
"src/core/iomgr/pollset_set_windows.h",
@@ -353,9 +352,6 @@ cc_library(
"src/core/iomgr/iomgr.c",
"src/core/iomgr/iomgr_posix.c",
"src/core/iomgr/iomgr_windows.c",
- "src/core/iomgr/pollset_multipoller_with_epoll.c",
- "src/core/iomgr/pollset_multipoller_with_poll_posix.c",
- "src/core/iomgr/pollset_posix.c",
"src/core/iomgr/pollset_set_posix.c",
"src/core/iomgr/pollset_set_windows.c",
"src/core/iomgr/pollset_windows.c",
@@ -521,7 +517,6 @@ cc_library(
"src/core/iomgr/iomgr_internal.h",
"src/core/iomgr/iomgr_posix.h",
"src/core/iomgr/pollset.h",
- "src/core/iomgr/pollset_posix.h",
"src/core/iomgr/pollset_set.h",
"src/core/iomgr/pollset_set_posix.h",
"src/core/iomgr/pollset_set_windows.h",
@@ -640,9 +635,6 @@ cc_library(
"src/core/iomgr/iomgr.c",
"src/core/iomgr/iomgr_posix.c",
"src/core/iomgr/iomgr_windows.c",
- "src/core/iomgr/pollset_multipoller_with_epoll.c",
- "src/core/iomgr/pollset_multipoller_with_poll_posix.c",
- "src/core/iomgr/pollset_posix.c",
"src/core/iomgr/pollset_set_posix.c",
"src/core/iomgr/pollset_set_windows.c",
"src/core/iomgr/pollset_windows.c",
@@ -1319,9 +1311,6 @@ objc_library(
"src/core/iomgr/iomgr.c",
"src/core/iomgr/iomgr_posix.c",
"src/core/iomgr/iomgr_windows.c",
- "src/core/iomgr/pollset_multipoller_with_epoll.c",
- "src/core/iomgr/pollset_multipoller_with_poll_posix.c",
- "src/core/iomgr/pollset_posix.c",
"src/core/iomgr/pollset_set_posix.c",
"src/core/iomgr/pollset_set_windows.c",
"src/core/iomgr/pollset_windows.c",
@@ -1482,7 +1471,6 @@ objc_library(
"src/core/iomgr/iomgr_internal.h",
"src/core/iomgr/iomgr_posix.h",
"src/core/iomgr/pollset.h",
- "src/core/iomgr/pollset_posix.h",
"src/core/iomgr/pollset_set.h",
"src/core/iomgr/pollset_set_posix.h",
"src/core/iomgr/pollset_set_windows.h",
diff --git a/Makefile b/Makefile
index 2d46699d81f7df3a9cae4dd4bf81e8bc41062dd2..6b713feac4c6c6e43a0b0effff4b6c9e5a9f6b4a 100644
--- a/Makefile
+++ b/Makefile
@@ -2386,9 +2386,6 @@ LIBGRPC_SRC = \
src/core/iomgr/iomgr.c \
src/core/iomgr/iomgr_posix.c \
src/core/iomgr/iomgr_windows.c \
- src/core/iomgr/pollset_multipoller_with_epoll.c \
- src/core/iomgr/pollset_multipoller_with_poll_posix.c \
- src/core/iomgr/pollset_posix.c \
src/core/iomgr/pollset_set_posix.c \
src/core/iomgr/pollset_set_windows.c \
src/core/iomgr/pollset_windows.c \
@@ -2673,9 +2670,6 @@ LIBGRPC_UNSECURE_SRC = \
src/core/iomgr/iomgr.c \
src/core/iomgr/iomgr_posix.c \
src/core/iomgr/iomgr_windows.c \
- src/core/iomgr/pollset_multipoller_with_epoll.c \
- src/core/iomgr/pollset_multipoller_with_poll_posix.c \
- src/core/iomgr/pollset_posix.c \
src/core/iomgr/pollset_set_posix.c \
src/core/iomgr/pollset_set_windows.c \
src/core/iomgr/pollset_windows.c \
diff --git a/binding.gyp b/binding.gyp
index 89f4a8bbde27f2cc2b6023edd491cc122be8b855..5fb40d2e05ef362dc49883c4152b32bdc137546a 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -625,9 +625,6 @@
'src/core/iomgr/iomgr.c',
'src/core/iomgr/iomgr_posix.c',
'src/core/iomgr/iomgr_windows.c',
- 'src/core/iomgr/pollset_multipoller_with_epoll.c',
- 'src/core/iomgr/pollset_multipoller_with_poll_posix.c',
- 'src/core/iomgr/pollset_posix.c',
'src/core/iomgr/pollset_set_posix.c',
'src/core/iomgr/pollset_set_windows.c',
'src/core/iomgr/pollset_windows.c',
diff --git a/build.yaml b/build.yaml
index acbc8de4eaa79dc7e3f5ecb62f2e9ee7ddfcc2e1..6075f01c4b78697ff2dd9fc88fea4be21c2b8b4d 100644
--- a/build.yaml
+++ b/build.yaml
@@ -290,7 +290,6 @@ filegroups:
- src/core/iomgr/iomgr_internal.h
- src/core/iomgr/iomgr_posix.h
- src/core/iomgr/pollset.h
- - src/core/iomgr/pollset_posix.h
- src/core/iomgr/pollset_set.h
- src/core/iomgr/pollset_set_posix.h
- src/core/iomgr/pollset_set_windows.h
@@ -406,9 +405,6 @@ filegroups:
- src/core/iomgr/iomgr.c
- src/core/iomgr/iomgr_posix.c
- src/core/iomgr/iomgr_windows.c
- - src/core/iomgr/pollset_multipoller_with_epoll.c
- - src/core/iomgr/pollset_multipoller_with_poll_posix.c
- - src/core/iomgr/pollset_posix.c
- src/core/iomgr/pollset_set_posix.c
- src/core/iomgr/pollset_set_windows.c
- src/core/iomgr/pollset_windows.c
diff --git a/gRPC.podspec b/gRPC.podspec
index cce0d53aad15394a8555e3643e5577ea1359de6b..173145d1b22d1bae2369b251a45773845d08ef71 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -218,7 +218,6 @@ Pod::Spec.new do |s|
'src/core/iomgr/iomgr_internal.h',
'src/core/iomgr/iomgr_posix.h',
'src/core/iomgr/pollset.h',
- 'src/core/iomgr/pollset_posix.h',
'src/core/iomgr/pollset_set.h',
'src/core/iomgr/pollset_set_posix.h',
'src/core/iomgr/pollset_set_windows.h',
@@ -370,9 +369,6 @@ Pod::Spec.new do |s|
'src/core/iomgr/iomgr.c',
'src/core/iomgr/iomgr_posix.c',
'src/core/iomgr/iomgr_windows.c',
- 'src/core/iomgr/pollset_multipoller_with_epoll.c',
- 'src/core/iomgr/pollset_multipoller_with_poll_posix.c',
- 'src/core/iomgr/pollset_posix.c',
'src/core/iomgr/pollset_set_posix.c',
'src/core/iomgr/pollset_set_windows.c',
'src/core/iomgr/pollset_windows.c',
@@ -529,7 +525,6 @@ Pod::Spec.new do |s|
'src/core/iomgr/iomgr_internal.h',
'src/core/iomgr/iomgr_posix.h',
'src/core/iomgr/pollset.h',
- 'src/core/iomgr/pollset_posix.h',
'src/core/iomgr/pollset_set.h',
'src/core/iomgr/pollset_set_posix.h',
'src/core/iomgr/pollset_set_windows.h',
diff --git a/grpc.gemspec b/grpc.gemspec
index 314e2179669c1565764c1a07d3680d169b7afb23..d632f8f62734e25316f8ca1deaa42cf5e72e5df8 100755
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -214,7 +214,6 @@ Gem::Specification.new do |s|
s.files += %w( src/core/iomgr/iomgr_internal.h )
s.files += %w( src/core/iomgr/iomgr_posix.h )
s.files += %w( src/core/iomgr/pollset.h )
- s.files += %w( src/core/iomgr/pollset_posix.h )
s.files += %w( src/core/iomgr/pollset_set.h )
s.files += %w( src/core/iomgr/pollset_set_posix.h )
s.files += %w( src/core/iomgr/pollset_set_windows.h )
@@ -353,9 +352,6 @@ Gem::Specification.new do |s|
s.files += %w( src/core/iomgr/iomgr.c )
s.files += %w( src/core/iomgr/iomgr_posix.c )
s.files += %w( src/core/iomgr/iomgr_windows.c )
- s.files += %w( src/core/iomgr/pollset_multipoller_with_epoll.c )
- s.files += %w( src/core/iomgr/pollset_multipoller_with_poll_posix.c )
- s.files += %w( src/core/iomgr/pollset_posix.c )
s.files += %w( src/core/iomgr/pollset_set_posix.c )
s.files += %w( src/core/iomgr/pollset_set_windows.c )
s.files += %w( src/core/iomgr/pollset_windows.c )
diff --git a/package.json b/package.json
index 661839f1c6496a8e2cb73d270f45b9f1bfedb5f1..24d7d850b26f7aa0d4ad913a638d9832d4158362 100644
--- a/package.json
+++ b/package.json
@@ -159,7 +159,6 @@
"src/core/iomgr/iomgr_internal.h",
"src/core/iomgr/iomgr_posix.h",
"src/core/iomgr/pollset.h",
- "src/core/iomgr/pollset_posix.h",
"src/core/iomgr/pollset_set.h",
"src/core/iomgr/pollset_set_posix.h",
"src/core/iomgr/pollset_set_windows.h",
@@ -298,9 +297,6 @@
"src/core/iomgr/iomgr.c",
"src/core/iomgr/iomgr_posix.c",
"src/core/iomgr/iomgr_windows.c",
- "src/core/iomgr/pollset_multipoller_with_epoll.c",
- "src/core/iomgr/pollset_multipoller_with_poll_posix.c",
- "src/core/iomgr/pollset_posix.c",
"src/core/iomgr/pollset_set_posix.c",
"src/core/iomgr/pollset_set_windows.c",
"src/core/iomgr/pollset_windows.c",
diff --git a/src/core/iomgr/ev_poll_and_epoll_posix.c b/src/core/iomgr/ev_poll_and_epoll_posix.c
index 9b2fc2056ddd94b27e8eb8f3d4f371872972f33f..e9ed7144c440a00a4d05211efefdbd8b6deb60f3 100644
--- a/src/core/iomgr/ev_poll_and_epoll_posix.c
+++ b/src/core/iomgr/ev_poll_and_epoll_posix.c
@@ -49,14 +49,27 @@
#include "src/core/iomgr/ev_poll_and_epoll_posix.h"
#include <assert.h>
+#include <errno.h>
+#include <poll.h>
+#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
+#include <grpc/support/tls.h>
#include <grpc/support/useful.h>
+#include "src/core/iomgr/iomgr_internal.h"
+#include "src/core/iomgr/wakeup_fd_posix.h"
+#include "src/core/profiling/timers.h"
+#include "src/core/support/block_annotate.h"
+
+/*******************************************************************************
+ * FD declarations
+ */
+
typedef struct grpc_fd_watcher {
struct grpc_fd_watcher *next;
struct grpc_fd_watcher *prev;
@@ -166,6 +179,112 @@ void grpc_fd_global_shutdown(void);
#define CLOSURE_NOT_READY ((grpc_closure *)0)
#define CLOSURE_READY ((grpc_closure *)1)
+/*******************************************************************************
+ * pollset declarations
+ */
+
+typedef struct grpc_pollset_vtable grpc_pollset_vtable;
+
+typedef struct grpc_cached_wakeup_fd {
+ grpc_wakeup_fd fd;
+ struct grpc_cached_wakeup_fd *next;
+} grpc_cached_wakeup_fd;
+
+struct grpc_pollset_worker {
+ grpc_cached_wakeup_fd *wakeup_fd;
+ int reevaluate_polling_on_wakeup;
+ int kicked_specifically;
+ struct grpc_pollset_worker *next;
+ struct grpc_pollset_worker *prev;
+};
+
+struct grpc_pollset {
+ /* pollsets under posix can mutate representation as fds are added and
+ removed.
+ For example, we may choose a poll() based implementation on linux for
+ few fds, and an epoll() based implementation for many fds */
+ const grpc_pollset_vtable *vtable;
+ gpr_mu *mu;
+ grpc_pollset_worker root_worker;
+ int in_flight_cbs;
+ int shutting_down;
+ int called_shutdown;
+ int kicked_without_pollers;
+ grpc_closure *shutdown_done;
+ grpc_closure_list idle_jobs;
+ union {
+ int fd;
+ void *ptr;
+ } data;
+ /* Local cache of eventfds for workers */
+ grpc_cached_wakeup_fd *local_wakeup_cache;
+};
+
+struct grpc_pollset_vtable {
+ void (*add_fd)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ struct grpc_fd *fd, int and_unlock_pollset);
+ void (*maybe_work_and_unlock)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ grpc_pollset_worker *worker,
+ gpr_timespec deadline, gpr_timespec now);
+ void (*finish_shutdown)(grpc_pollset *pollset);
+ void (*destroy)(grpc_pollset *pollset);
+};
+
+/* Add an fd to a pollset */
+void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ struct grpc_fd *fd);
+
+/* Returns the fd to listen on for kicks */
+int grpc_kick_read_fd(grpc_pollset *p);
+/* Call after polling has been kicked to leave the kicked state */
+void grpc_kick_drain(grpc_pollset *p);
+
+/* Convert a timespec to milliseconds:
+ - very small or negative poll times are clamped to zero to do a
+ non-blocking poll (which becomes spin polling)
+ - other small values are rounded up to one millisecond
+ - longer than a millisecond polls are rounded up to the next nearest
+ millisecond to avoid spinning
+ - infinite timeouts are converted to -1 */
+int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline,
+ gpr_timespec now);
+
+/* Allow kick to wakeup the currently polling worker */
+#define GRPC_POLLSET_CAN_KICK_SELF 1
+/* Force the wakee to repoll when awoken */
+#define GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP 2
+/* As per grpc_pollset_kick, with an extended set of flags (defined above)
+ -- mostly for fd_posix's use. */
+void grpc_pollset_kick_ext(grpc_pollset *p,
+ grpc_pollset_worker *specific_worker,
+ uint32_t flags);
+
+/* turn a pollset into a multipoller: platform specific */
+typedef void (*grpc_platform_become_multipoller_type)(grpc_exec_ctx *exec_ctx,
+ grpc_pollset *pollset,
+ struct grpc_fd **fds,
+ size_t fd_count);
+extern grpc_platform_become_multipoller_type grpc_platform_become_multipoller;
+
+void grpc_poll_become_multipoller(grpc_exec_ctx *exec_ctx,
+ grpc_pollset *pollset, struct grpc_fd **fds,
+ size_t fd_count);
+
+/* Return 1 if the pollset has active threads in grpc_pollset_work (pollset must
+ * be locked) */
+int grpc_pollset_has_workers(grpc_pollset *pollset);
+
+void grpc_remove_fd_from_all_epoll_sets(int fd);
+
+/* override to allow tests to hook poll() usage */
+typedef int (*grpc_poll_function_type)(struct pollfd *, nfds_t, int);
+extern grpc_poll_function_type grpc_poll_function;
+extern grpc_wakeup_fd grpc_global_wakeup_fd;
+
+/*******************************************************************************
+ * fd_posix.c
+ */
+
/* We need to keep a freelist not because of any concerns of malloc performance
* but instead so that implementations with multiple threads in (for example)
* epoll_wait deal with the race between pollset removal and incoming poll
@@ -563,4 +682,1054 @@ void grpc_fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) {
set_ready(exec_ctx, fd, &fd->write_closure);
}
+/*******************************************************************************
+ * pollset_posix.c
+ */
+
+GPR_TLS_DECL(g_current_thread_poller);
+GPR_TLS_DECL(g_current_thread_worker);
+
+/** Default poll() function - a pointer so that it can be overridden by some
+ * tests */
+grpc_poll_function_type grpc_poll_function = poll;
+
+/** The alarm system needs to be able to wakeup 'some poller' sometimes
+ * (specifically when a new alarm needs to be triggered earlier than the next
+ * alarm 'epoch').
+ * This wakeup_fd gives us something to alert on when such a case occurs. */
+grpc_wakeup_fd grpc_global_wakeup_fd;
+
+static void remove_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
+ worker->prev->next = worker->next;
+ worker->next->prev = worker->prev;
+}
+
+int grpc_pollset_has_workers(grpc_pollset *p) {
+ return p->root_worker.next != &p->root_worker;
+}
+
+static grpc_pollset_worker *pop_front_worker(grpc_pollset *p) {
+ if (grpc_pollset_has_workers(p)) {
+ grpc_pollset_worker *w = p->root_worker.next;
+ remove_worker(p, w);
+ return w;
+ } else {
+ return NULL;
+ }
+}
+
+static void push_back_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
+ worker->next = &p->root_worker;
+ worker->prev = worker->next->prev;
+ worker->prev->next = worker->next->prev = worker;
+}
+
+static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
+ worker->prev = &p->root_worker;
+ worker->next = worker->prev->next;
+ worker->prev->next = worker->next->prev = worker;
+}
+
+size_t grpc_pollset_size(void) { return sizeof(grpc_pollset); }
+
+void grpc_pollset_kick_ext(grpc_pollset *p,
+ grpc_pollset_worker *specific_worker,
+ uint32_t flags) {
+ GPR_TIMER_BEGIN("grpc_pollset_kick_ext", 0);
+
+ /* pollset->mu already held */
+ if (specific_worker != NULL) {
+ if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
+ GPR_TIMER_BEGIN("grpc_pollset_kick_ext.broadcast", 0);
+ GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
+ for (specific_worker = p->root_worker.next;
+ specific_worker != &p->root_worker;
+ specific_worker = specific_worker->next) {
+ grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
+ }
+ p->kicked_without_pollers = 1;
+ GPR_TIMER_END("grpc_pollset_kick_ext.broadcast", 0);
+ } else if (gpr_tls_get(&g_current_thread_worker) !=
+ (intptr_t)specific_worker) {
+ GPR_TIMER_MARK("different_thread_worker", 0);
+ if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
+ specific_worker->reevaluate_polling_on_wakeup = 1;
+ }
+ specific_worker->kicked_specifically = 1;
+ grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
+ } else if ((flags & GRPC_POLLSET_CAN_KICK_SELF) != 0) {
+ GPR_TIMER_MARK("kick_yoself", 0);
+ if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
+ specific_worker->reevaluate_polling_on_wakeup = 1;
+ }
+ specific_worker->kicked_specifically = 1;
+ grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
+ }
+ } else if (gpr_tls_get(&g_current_thread_poller) != (intptr_t)p) {
+ GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
+ GPR_TIMER_MARK("kick_anonymous", 0);
+ specific_worker = pop_front_worker(p);
+ if (specific_worker != NULL) {
+ if (gpr_tls_get(&g_current_thread_worker) == (intptr_t)specific_worker) {
+ GPR_TIMER_MARK("kick_anonymous_not_self", 0);
+ push_back_worker(p, specific_worker);
+ specific_worker = pop_front_worker(p);
+ if ((flags & GRPC_POLLSET_CAN_KICK_SELF) == 0 &&
+ gpr_tls_get(&g_current_thread_worker) ==
+ (intptr_t)specific_worker) {
+ push_back_worker(p, specific_worker);
+ specific_worker = NULL;
+ }
+ }
+ if (specific_worker != NULL) {
+ GPR_TIMER_MARK("finally_kick", 0);
+ push_back_worker(p, specific_worker);
+ grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
+ }
+ } else {
+ GPR_TIMER_MARK("kicked_no_pollers", 0);
+ p->kicked_without_pollers = 1;
+ }
+ }
+
+ GPR_TIMER_END("grpc_pollset_kick_ext", 0);
+}
+
+void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) {
+ grpc_pollset_kick_ext(p, specific_worker, 0);
+}
+
+/* global state management */
+
+void grpc_pollset_global_init(void) {
+ gpr_tls_init(&g_current_thread_poller);
+ gpr_tls_init(&g_current_thread_worker);
+ grpc_wakeup_fd_global_init();
+ grpc_wakeup_fd_init(&grpc_global_wakeup_fd);
+}
+
+void grpc_pollset_global_shutdown(void) {
+ grpc_wakeup_fd_destroy(&grpc_global_wakeup_fd);
+ gpr_tls_destroy(&g_current_thread_poller);
+ gpr_tls_destroy(&g_current_thread_worker);
+ grpc_wakeup_fd_global_destroy();
+}
+
+void grpc_kick_poller(void) { grpc_wakeup_fd_wakeup(&grpc_global_wakeup_fd); }
+
+/* main interface */
+
+static void become_basic_pollset(grpc_pollset *pollset, grpc_fd *fd_or_null);
+
+void grpc_pollset_init(grpc_pollset *pollset, gpr_mu *mu) {
+ pollset->mu = mu;
+ pollset->root_worker.next = pollset->root_worker.prev = &pollset->root_worker;
+ pollset->in_flight_cbs = 0;
+ pollset->shutting_down = 0;
+ pollset->called_shutdown = 0;
+ pollset->kicked_without_pollers = 0;
+ pollset->idle_jobs.head = pollset->idle_jobs.tail = NULL;
+ pollset->local_wakeup_cache = NULL;
+ pollset->kicked_without_pollers = 0;
+ become_basic_pollset(pollset, NULL);
+}
+
+void grpc_pollset_destroy(grpc_pollset *pollset) {
+ GPR_ASSERT(pollset->in_flight_cbs == 0);
+ GPR_ASSERT(!grpc_pollset_has_workers(pollset));
+ GPR_ASSERT(pollset->idle_jobs.head == pollset->idle_jobs.tail);
+ pollset->vtable->destroy(pollset);
+ while (pollset->local_wakeup_cache) {
+ grpc_cached_wakeup_fd *next = pollset->local_wakeup_cache->next;
+ grpc_wakeup_fd_destroy(&pollset->local_wakeup_cache->fd);
+ gpr_free(pollset->local_wakeup_cache);
+ pollset->local_wakeup_cache = next;
+ }
+}
+
+void grpc_pollset_reset(grpc_pollset *pollset) {
+ GPR_ASSERT(pollset->shutting_down);
+ GPR_ASSERT(pollset->in_flight_cbs == 0);
+ GPR_ASSERT(!grpc_pollset_has_workers(pollset));
+ GPR_ASSERT(pollset->idle_jobs.head == pollset->idle_jobs.tail);
+ pollset->vtable->destroy(pollset);
+ pollset->shutting_down = 0;
+ pollset->called_shutdown = 0;
+ pollset->kicked_without_pollers = 0;
+ become_basic_pollset(pollset, NULL);
+}
+
+void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ grpc_fd *fd) {
+ gpr_mu_lock(pollset->mu);
+ pollset->vtable->add_fd(exec_ctx, pollset, fd, 1);
+/* the following (enabled only in debug) will reacquire and then release
+ our lock - meaning that if the unlocking flag passed to add_fd above is
+ not respected, the code will deadlock (in a way that we have a chance of
+ debugging) */
+#ifndef NDEBUG
+ gpr_mu_lock(pollset->mu);
+ gpr_mu_unlock(pollset->mu);
+#endif
+}
+
+static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset) {
+ GPR_ASSERT(grpc_closure_list_empty(pollset->idle_jobs));
+ pollset->vtable->finish_shutdown(pollset);
+ grpc_exec_ctx_enqueue(exec_ctx, pollset->shutdown_done, true, NULL);
+}
+
+void grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ grpc_pollset_worker **worker_hdl, gpr_timespec now,
+ gpr_timespec deadline) {
+ grpc_pollset_worker worker;
+ *worker_hdl = &worker;
+
+ /* pollset->mu already held */
+ int added_worker = 0;
+ int locked = 1;
+ int queued_work = 0;
+ int keep_polling = 0;
+ GPR_TIMER_BEGIN("grpc_pollset_work", 0);
+ /* this must happen before we (potentially) drop pollset->mu */
+ worker.next = worker.prev = NULL;
+ worker.reevaluate_polling_on_wakeup = 0;
+ if (pollset->local_wakeup_cache != NULL) {
+ worker.wakeup_fd = pollset->local_wakeup_cache;
+ pollset->local_wakeup_cache = worker.wakeup_fd->next;
+ } else {
+ worker.wakeup_fd = gpr_malloc(sizeof(*worker.wakeup_fd));
+ grpc_wakeup_fd_init(&worker.wakeup_fd->fd);
+ }
+ worker.kicked_specifically = 0;
+ /* If there's work waiting for the pollset to be idle, and the
+ pollset is idle, then do that work */
+ if (!grpc_pollset_has_workers(pollset) &&
+ !grpc_closure_list_empty(pollset->idle_jobs)) {
+ GPR_TIMER_MARK("grpc_pollset_work.idle_jobs", 0);
+ grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL);
+ goto done;
+ }
+ /* If we're shutting down then we don't execute any extended work */
+ if (pollset->shutting_down) {
+ GPR_TIMER_MARK("grpc_pollset_work.shutting_down", 0);
+ goto done;
+ }
+ /* Give do_promote priority so we don't starve it out */
+ if (pollset->in_flight_cbs) {
+ GPR_TIMER_MARK("grpc_pollset_work.in_flight_cbs", 0);
+ gpr_mu_unlock(pollset->mu);
+ locked = 0;
+ goto done;
+ }
+ /* Start polling, and keep doing so while we're being asked to
+ re-evaluate our pollers (this allows poll() based pollers to
+ ensure they don't miss wakeups) */
+ keep_polling = 1;
+ while (keep_polling) {
+ keep_polling = 0;
+ if (!pollset->kicked_without_pollers) {
+ if (!added_worker) {
+ push_front_worker(pollset, &worker);
+ added_worker = 1;
+ gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker);
+ }
+ gpr_tls_set(&g_current_thread_poller, (intptr_t)pollset);
+ GPR_TIMER_BEGIN("maybe_work_and_unlock", 0);
+ pollset->vtable->maybe_work_and_unlock(exec_ctx, pollset, &worker,
+ deadline, now);
+ GPR_TIMER_END("maybe_work_and_unlock", 0);
+ locked = 0;
+ gpr_tls_set(&g_current_thread_poller, 0);
+ } else {
+ GPR_TIMER_MARK("grpc_pollset_work.kicked_without_pollers", 0);
+ pollset->kicked_without_pollers = 0;
+ }
+ /* Finished execution - start cleaning up.
+ Note that we may arrive here from outside the enclosing while() loop.
+ In that case we won't loop though as we haven't added worker to the
+ worker list, which means nobody could ask us to re-evaluate polling). */
+ done:
+ if (!locked) {
+ queued_work |= grpc_exec_ctx_flush(exec_ctx);
+ gpr_mu_lock(pollset->mu);
+ locked = 1;
+ }
+ /* If we're forced to re-evaluate polling (via grpc_pollset_kick with
+ GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) then we land here and force
+ a loop */
+ if (worker.reevaluate_polling_on_wakeup) {
+ worker.reevaluate_polling_on_wakeup = 0;
+ pollset->kicked_without_pollers = 0;
+ if (queued_work || worker.kicked_specifically) {
+ /* If there's queued work on the list, then set the deadline to be
+ immediate so we get back out of the polling loop quickly */
+ deadline = gpr_inf_past(GPR_CLOCK_MONOTONIC);
+ }
+ keep_polling = 1;
+ }
+ }
+ if (added_worker) {
+ remove_worker(pollset, &worker);
+ gpr_tls_set(&g_current_thread_worker, 0);
+ }
+ /* release wakeup fd to the local pool */
+ worker.wakeup_fd->next = pollset->local_wakeup_cache;
+ pollset->local_wakeup_cache = worker.wakeup_fd;
+ /* check shutdown conditions */
+ if (pollset->shutting_down) {
+ if (grpc_pollset_has_workers(pollset)) {
+ grpc_pollset_kick(pollset, NULL);
+ } else if (!pollset->called_shutdown && pollset->in_flight_cbs == 0) {
+ pollset->called_shutdown = 1;
+ gpr_mu_unlock(pollset->mu);
+ finish_shutdown(exec_ctx, pollset);
+ grpc_exec_ctx_flush(exec_ctx);
+ /* Continuing to access pollset here is safe -- it is the caller's
+ * responsibility to not destroy when it has outstanding calls to
+ * grpc_pollset_work.
+ * TODO(dklempner): Can we refactor the shutdown logic to avoid this? */
+ gpr_mu_lock(pollset->mu);
+ } else if (!grpc_closure_list_empty(pollset->idle_jobs)) {
+ grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL);
+ gpr_mu_unlock(pollset->mu);
+ grpc_exec_ctx_flush(exec_ctx);
+ gpr_mu_lock(pollset->mu);
+ }
+ }
+ *worker_hdl = NULL;
+ GPR_TIMER_END("grpc_pollset_work", 0);
+}
+
+void grpc_pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ grpc_closure *closure) {
+ GPR_ASSERT(!pollset->shutting_down);
+ pollset->shutting_down = 1;
+ pollset->shutdown_done = closure;
+ grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
+ if (!grpc_pollset_has_workers(pollset)) {
+ grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL);
+ }
+ if (!pollset->called_shutdown && pollset->in_flight_cbs == 0 &&
+ !grpc_pollset_has_workers(pollset)) {
+ pollset->called_shutdown = 1;
+ finish_shutdown(exec_ctx, pollset);
+ }
+}
+
+int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline,
+ gpr_timespec now) {
+ gpr_timespec timeout;
+ static const int64_t max_spin_polling_us = 10;
+ if (gpr_time_cmp(deadline, gpr_inf_future(deadline.clock_type)) == 0) {
+ return -1;
+ }
+ if (gpr_time_cmp(deadline, gpr_time_add(now, gpr_time_from_micros(
+ max_spin_polling_us,
+ GPR_TIMESPAN))) <= 0) {
+ return 0;
+ }
+ timeout = gpr_time_sub(deadline, now);
+ return gpr_time_to_millis(gpr_time_add(
+ timeout, gpr_time_from_nanos(GPR_NS_PER_MS - 1, GPR_TIMESPAN)));
+}
+
+/*
+ * basic_pollset - a vtable that provides polling for zero or one file
+ * descriptor via poll()
+ */
+
+typedef struct grpc_unary_promote_args {
+ const grpc_pollset_vtable *original_vtable;
+ grpc_pollset *pollset;
+ grpc_fd *fd;
+ grpc_closure promotion_closure;
+} grpc_unary_promote_args;
+
+static void basic_do_promote(grpc_exec_ctx *exec_ctx, void *args,
+ bool success) {
+ grpc_unary_promote_args *up_args = args;
+ const grpc_pollset_vtable *original_vtable = up_args->original_vtable;
+ grpc_pollset *pollset = up_args->pollset;
+ grpc_fd *fd = up_args->fd;
+
+ /*
+ * This is quite tricky. There are a number of cases to keep in mind here:
+ * 1. fd may have been orphaned
+ * 2. The pollset may no longer be a unary poller (and we can't let case #1
+ * leak to other pollset types!)
+ * 3. pollset's fd (which may have changed) may have been orphaned
+ * 4. The pollset may be shutting down.
+ */
+
+ gpr_mu_lock(pollset->mu);
+ /* First we need to ensure that nobody is polling concurrently */
+ GPR_ASSERT(!grpc_pollset_has_workers(pollset));
+
+ gpr_free(up_args);
+ /* At this point the pollset may no longer be a unary poller. In that case
+ * we should just call the right add function and be done. */
+ /* TODO(klempner): If we're not careful this could cause infinite recursion.
+ * That's not a problem for now because empty_pollset has a trivial poller
+ * and we don't have any mechanism to unbecome multipoller. */
+ pollset->in_flight_cbs--;
+ if (pollset->shutting_down) {
+ /* We don't care about this pollset anymore. */
+ if (pollset->in_flight_cbs == 0 && !pollset->called_shutdown) {
+ pollset->called_shutdown = 1;
+ finish_shutdown(exec_ctx, pollset);
+ }
+ } else if (grpc_fd_is_orphaned(fd)) {
+ /* Don't try to add it to anything, we'll drop our ref on it below */
+ } else if (pollset->vtable != original_vtable) {
+ pollset->vtable->add_fd(exec_ctx, pollset, fd, 0);
+ } else if (fd != pollset->data.ptr) {
+ grpc_fd *fds[2];
+ fds[0] = pollset->data.ptr;
+ fds[1] = fd;
+
+ if (fds[0] && !grpc_fd_is_orphaned(fds[0])) {
+ grpc_platform_become_multipoller(exec_ctx, pollset, fds,
+ GPR_ARRAY_SIZE(fds));
+ GRPC_FD_UNREF(fds[0], "basicpoll");
+ } else {
+ /* old fd is orphaned and we haven't cleaned it up until now, so remain a
+ * unary poller */
+ /* Note that it is possible that fds[1] is also orphaned at this point.
+ * That's okay, we'll correct it at the next add or poll. */
+ if (fds[0]) GRPC_FD_UNREF(fds[0], "basicpoll");
+ pollset->data.ptr = fd;
+ GRPC_FD_REF(fd, "basicpoll");
+ }
+ }
+
+ gpr_mu_unlock(pollset->mu);
+
+ /* Matching ref in basic_pollset_add_fd */
+ GRPC_FD_UNREF(fd, "basicpoll_add");
+}
+
+static void basic_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ grpc_fd *fd, int and_unlock_pollset) {
+ grpc_unary_promote_args *up_args;
+ GPR_ASSERT(fd);
+ if (fd == pollset->data.ptr) goto exit;
+
+ if (!grpc_pollset_has_workers(pollset)) {
+ /* Fast path -- no in flight cbs */
+ /* TODO(klempner): Comment this out and fix any test failures or establish
+ * they are due to timing issues */
+ grpc_fd *fds[2];
+ fds[0] = pollset->data.ptr;
+ fds[1] = fd;
+
+ if (fds[0] == NULL) {
+ pollset->data.ptr = fd;
+ GRPC_FD_REF(fd, "basicpoll");
+ } else if (!grpc_fd_is_orphaned(fds[0])) {
+ grpc_platform_become_multipoller(exec_ctx, pollset, fds,
+ GPR_ARRAY_SIZE(fds));
+ GRPC_FD_UNREF(fds[0], "basicpoll");
+ } else {
+ /* old fd is orphaned and we haven't cleaned it up until now, so remain a
+ * unary poller */
+ GRPC_FD_UNREF(fds[0], "basicpoll");
+ pollset->data.ptr = fd;
+ GRPC_FD_REF(fd, "basicpoll");
+ }
+ goto exit;
+ }
+
+ /* Now we need to promote. This needs to happen when we're not polling. Since
+ * this may be called from poll, the wait needs to happen asynchronously. */
+ GRPC_FD_REF(fd, "basicpoll_add");
+ pollset->in_flight_cbs++;
+ up_args = gpr_malloc(sizeof(*up_args));
+ up_args->fd = fd;
+ up_args->original_vtable = pollset->vtable;
+ up_args->pollset = pollset;
+ up_args->promotion_closure.cb = basic_do_promote;
+ up_args->promotion_closure.cb_arg = up_args;
+
+ grpc_closure_list_add(&pollset->idle_jobs, &up_args->promotion_closure, 1);
+ grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
+
+exit:
+ if (and_unlock_pollset) {
+ gpr_mu_unlock(pollset->mu);
+ }
+}
+
+static void basic_pollset_maybe_work_and_unlock(grpc_exec_ctx *exec_ctx,
+ grpc_pollset *pollset,
+ grpc_pollset_worker *worker,
+ gpr_timespec deadline,
+ gpr_timespec now) {
+#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR)
+#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR)
+
+ struct pollfd pfd[3];
+ grpc_fd *fd;
+ grpc_fd_watcher fd_watcher;
+ int timeout;
+ int r;
+ nfds_t nfds;
+
+ fd = pollset->data.ptr;
+ if (fd && grpc_fd_is_orphaned(fd)) {
+ GRPC_FD_UNREF(fd, "basicpoll");
+ fd = pollset->data.ptr = NULL;
+ }
+ timeout = grpc_poll_deadline_to_millis_timeout(deadline, now);
+ pfd[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd);
+ pfd[0].events = POLLIN;
+ pfd[0].revents = 0;
+ pfd[1].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd);
+ pfd[1].events = POLLIN;
+ pfd[1].revents = 0;
+ nfds = 2;
+ if (fd) {
+ pfd[2].fd = fd->fd;
+ pfd[2].revents = 0;
+ GRPC_FD_REF(fd, "basicpoll_begin");
+ gpr_mu_unlock(pollset->mu);
+ pfd[2].events = (short)grpc_fd_begin_poll(fd, pollset, worker, POLLIN,
+ POLLOUT, &fd_watcher);
+ if (pfd[2].events != 0) {
+ nfds++;
+ }
+ } else {
+ gpr_mu_unlock(pollset->mu);
+ }
+
+ /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
+ even going into the blocking annotation if possible */
+ /* poll fd count (argument 2) is shortened by one if we have no events
+ to poll on - such that it only includes the kicker */
+ GPR_TIMER_BEGIN("poll", 0);
+ GRPC_SCHEDULING_START_BLOCKING_REGION;
+ r = grpc_poll_function(pfd, nfds, timeout);
+ GRPC_SCHEDULING_END_BLOCKING_REGION;
+ GPR_TIMER_END("poll", 0);
+
+ if (r < 0) {
+ if (errno != EINTR) {
+ gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
+ }
+ if (fd) {
+ grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0);
+ }
+ } else if (r == 0) {
+ if (fd) {
+ grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0);
+ }
+ } else {
+ if (pfd[0].revents & POLLIN_CHECK) {
+ grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
+ }
+ if (pfd[1].revents & POLLIN_CHECK) {
+ grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd);
+ }
+ if (nfds > 2) {
+ grpc_fd_end_poll(exec_ctx, &fd_watcher, pfd[2].revents & POLLIN_CHECK,
+ pfd[2].revents & POLLOUT_CHECK);
+ } else if (fd) {
+ grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0);
+ }
+ }
+
+ if (fd) {
+ GRPC_FD_UNREF(fd, "basicpoll_begin");
+ }
+}
+
+static void basic_pollset_destroy(grpc_pollset *pollset) {
+ if (pollset->data.ptr != NULL) {
+ GRPC_FD_UNREF(pollset->data.ptr, "basicpoll");
+ pollset->data.ptr = NULL;
+ }
+}
+
+static const grpc_pollset_vtable basic_pollset = {
+ basic_pollset_add_fd, basic_pollset_maybe_work_and_unlock,
+ basic_pollset_destroy, basic_pollset_destroy};
+
+static void become_basic_pollset(grpc_pollset *pollset, grpc_fd *fd_or_null) {
+ pollset->vtable = &basic_pollset;
+ pollset->data.ptr = fd_or_null;
+ if (fd_or_null != NULL) {
+ GRPC_FD_REF(fd_or_null, "basicpoll");
+ }
+}
+
+/*******************************************************************************
+ * pollset_multipoller_with_poll_posix.c
+ */
+
+typedef struct {
+ /* all polled fds */
+ size_t fd_count;
+ size_t fd_capacity;
+ grpc_fd **fds;
+ /* fds that have been removed from the pollset explicitly */
+ size_t del_count;
+ size_t del_capacity;
+ grpc_fd **dels;
+} poll_hdr;
+
+static void multipoll_with_poll_pollset_add_fd(grpc_exec_ctx *exec_ctx,
+ grpc_pollset *pollset,
+ grpc_fd *fd,
+ int and_unlock_pollset) {
+ size_t i;
+ poll_hdr *h = pollset->data.ptr;
+ /* TODO(ctiller): this is O(num_fds^2); maybe switch to a hash set here */
+ for (i = 0; i < h->fd_count; i++) {
+ if (h->fds[i] == fd) goto exit;
+ }
+ if (h->fd_count == h->fd_capacity) {
+ h->fd_capacity = GPR_MAX(h->fd_capacity + 8, h->fd_count * 3 / 2);
+ h->fds = gpr_realloc(h->fds, sizeof(grpc_fd *) * h->fd_capacity);
+ }
+ h->fds[h->fd_count++] = fd;
+ GRPC_FD_REF(fd, "multipoller");
+exit:
+ if (and_unlock_pollset) {
+ gpr_mu_unlock(pollset->mu);
+ }
+}
+
+static void multipoll_with_poll_pollset_maybe_work_and_unlock(
+ grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, grpc_pollset_worker *worker,
+ gpr_timespec deadline, gpr_timespec now) {
+#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR)
+#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR)
+
+ int timeout;
+ int r;
+ size_t i, j, fd_count;
+ nfds_t pfd_count;
+ poll_hdr *h;
+ /* TODO(ctiller): inline some elements to avoid an allocation */
+ grpc_fd_watcher *watchers;
+ struct pollfd *pfds;
+
+ h = pollset->data.ptr;
+ timeout = grpc_poll_deadline_to_millis_timeout(deadline, now);
+ /* TODO(ctiller): perform just one malloc here if we exceed the inline case */
+ pfds = gpr_malloc(sizeof(*pfds) * (h->fd_count + 2));
+ watchers = gpr_malloc(sizeof(*watchers) * (h->fd_count + 2));
+ fd_count = 0;
+ pfd_count = 2;
+ pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd);
+ pfds[0].events = POLLIN;
+ pfds[0].revents = 0;
+ pfds[1].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd);
+ pfds[1].events = POLLIN;
+ pfds[1].revents = 0;
+ for (i = 0; i < h->fd_count; i++) {
+ int remove = grpc_fd_is_orphaned(h->fds[i]);
+ for (j = 0; !remove && j < h->del_count; j++) {
+ if (h->fds[i] == h->dels[j]) remove = 1;
+ }
+ if (remove) {
+ GRPC_FD_UNREF(h->fds[i], "multipoller");
+ } else {
+ h->fds[fd_count++] = h->fds[i];
+ watchers[pfd_count].fd = h->fds[i];
+ pfds[pfd_count].fd = h->fds[i]->fd;
+ pfds[pfd_count].revents = 0;
+ pfd_count++;
+ }
+ }
+ for (j = 0; j < h->del_count; j++) {
+ GRPC_FD_UNREF(h->dels[j], "multipoller_del");
+ }
+ h->del_count = 0;
+ h->fd_count = fd_count;
+ gpr_mu_unlock(pollset->mu);
+
+ for (i = 2; i < pfd_count; i++) {
+ pfds[i].events = (short)grpc_fd_begin_poll(watchers[i].fd, pollset, worker,
+ POLLIN, POLLOUT, &watchers[i]);
+ }
+
+ /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
+ even going into the blocking annotation if possible */
+ GRPC_SCHEDULING_START_BLOCKING_REGION;
+ r = grpc_poll_function(pfds, pfd_count, timeout);
+ GRPC_SCHEDULING_END_BLOCKING_REGION;
+
+ if (r < 0) {
+ if (errno != EINTR) {
+ gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
+ }
+ for (i = 2; i < pfd_count; i++) {
+ grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
+ }
+ } else if (r == 0) {
+ for (i = 2; i < pfd_count; i++) {
+ grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
+ }
+ } else {
+ if (pfds[0].revents & POLLIN_CHECK) {
+ grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
+ }
+ if (pfds[1].revents & POLLIN_CHECK) {
+ grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd);
+ }
+ for (i = 2; i < pfd_count; i++) {
+ if (watchers[i].fd == NULL) {
+ grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
+ continue;
+ }
+ grpc_fd_end_poll(exec_ctx, &watchers[i], pfds[i].revents & POLLIN_CHECK,
+ pfds[i].revents & POLLOUT_CHECK);
+ }
+ }
+
+ gpr_free(pfds);
+ gpr_free(watchers);
+}
+
+static void multipoll_with_poll_pollset_finish_shutdown(grpc_pollset *pollset) {
+ size_t i;
+ poll_hdr *h = pollset->data.ptr;
+ for (i = 0; i < h->fd_count; i++) {
+ GRPC_FD_UNREF(h->fds[i], "multipoller");
+ }
+ for (i = 0; i < h->del_count; i++) {
+ GRPC_FD_UNREF(h->dels[i], "multipoller_del");
+ }
+ h->fd_count = 0;
+ h->del_count = 0;
+}
+
+static void multipoll_with_poll_pollset_destroy(grpc_pollset *pollset) {
+ poll_hdr *h = pollset->data.ptr;
+ multipoll_with_poll_pollset_finish_shutdown(pollset);
+ gpr_free(h->fds);
+ gpr_free(h->dels);
+ gpr_free(h);
+}
+
+static const grpc_pollset_vtable multipoll_with_poll_pollset = {
+ multipoll_with_poll_pollset_add_fd,
+ multipoll_with_poll_pollset_maybe_work_and_unlock,
+ multipoll_with_poll_pollset_finish_shutdown,
+ multipoll_with_poll_pollset_destroy};
+
+void grpc_poll_become_multipoller(grpc_exec_ctx *exec_ctx,
+ grpc_pollset *pollset, grpc_fd **fds,
+ size_t nfds) {
+ size_t i;
+ poll_hdr *h = gpr_malloc(sizeof(poll_hdr));
+ pollset->vtable = &multipoll_with_poll_pollset;
+ pollset->data.ptr = h;
+ h->fd_count = nfds;
+ h->fd_capacity = nfds;
+ h->fds = gpr_malloc(nfds * sizeof(grpc_fd *));
+ h->del_count = 0;
+ h->del_capacity = 0;
+ h->dels = NULL;
+ for (i = 0; i < nfds; i++) {
+ h->fds[i] = fds[i];
+ GRPC_FD_REF(fds[i], "multipoller");
+ }
+}
+
+/*******************************************************************************
+ * pollset_multipoller_with_epoll_posix.c
+ */
+
+#ifdef GPR_LINUX_MULTIPOLL_WITH_EPOLL
+
+#include <errno.h>
+#include <poll.h>
+#include <string.h>
+#include <sys/epoll.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/useful.h>
+
+#include "src/core/iomgr/ev_posix.h"
+#include "src/core/profiling/timers.h"
+#include "src/core/support/block_annotate.h"
+
+struct epoll_fd_list {
+ int *epoll_fds;
+ size_t count;
+ size_t capacity;
+};
+
+static struct epoll_fd_list epoll_fd_global_list;
+static gpr_once init_epoll_fd_list_mu = GPR_ONCE_INIT;
+static gpr_mu epoll_fd_list_mu;
+
+static void init_mu(void) { gpr_mu_init(&epoll_fd_list_mu); }
+
+static void add_epoll_fd_to_global_list(int epoll_fd) {
+ gpr_once_init(&init_epoll_fd_list_mu, init_mu);
+
+ gpr_mu_lock(&epoll_fd_list_mu);
+ if (epoll_fd_global_list.count == epoll_fd_global_list.capacity) {
+ epoll_fd_global_list.capacity =
+ GPR_MAX((size_t)8, epoll_fd_global_list.capacity * 2);
+ epoll_fd_global_list.epoll_fds =
+ gpr_realloc(epoll_fd_global_list.epoll_fds,
+ epoll_fd_global_list.capacity * sizeof(int));
+ }
+ epoll_fd_global_list.epoll_fds[epoll_fd_global_list.count++] = epoll_fd;
+ gpr_mu_unlock(&epoll_fd_list_mu);
+}
+
+static void remove_epoll_fd_from_global_list(int epoll_fd) {
+ gpr_mu_lock(&epoll_fd_list_mu);
+ GPR_ASSERT(epoll_fd_global_list.count > 0);
+ for (size_t i = 0; i < epoll_fd_global_list.count; i++) {
+ if (epoll_fd == epoll_fd_global_list.epoll_fds[i]) {
+ epoll_fd_global_list.epoll_fds[i] =
+ epoll_fd_global_list.epoll_fds[--(epoll_fd_global_list.count)];
+ break;
+ }
+ }
+ gpr_mu_unlock(&epoll_fd_list_mu);
+}
+
+void grpc_remove_fd_from_all_epoll_sets(int fd) {
+ int err;
+ gpr_once_init(&init_epoll_fd_list_mu, init_mu);
+ gpr_mu_lock(&epoll_fd_list_mu);
+ if (epoll_fd_global_list.count == 0) {
+ gpr_mu_unlock(&epoll_fd_list_mu);
+ return;
+ }
+ for (size_t i = 0; i < epoll_fd_global_list.count; i++) {
+ err = epoll_ctl(epoll_fd_global_list.epoll_fds[i], EPOLL_CTL_DEL, fd, NULL);
+ if (err < 0 && errno != ENOENT) {
+ gpr_log(GPR_ERROR, "epoll_ctl del for %d failed: %s", fd,
+ strerror(errno));
+ }
+ }
+ gpr_mu_unlock(&epoll_fd_list_mu);
+}
+
+typedef struct {
+ grpc_pollset *pollset;
+ grpc_fd *fd;
+ grpc_closure closure;
+} delayed_add;
+
+typedef struct { int epoll_fd; } epoll_hdr;
+
+static void finally_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ grpc_fd *fd) {
+ epoll_hdr *h = pollset->data.ptr;
+ struct epoll_event ev;
+ int err;
+ grpc_fd_watcher watcher;
+
+ /* We pretend to be polling whilst adding an fd to keep the fd from being
+ closed during the add. This may result in a spurious wakeup being assigned
+ to this pollset whilst adding, but that should be benign. */
+ GPR_ASSERT(grpc_fd_begin_poll(fd, pollset, NULL, 0, 0, &watcher) == 0);
+ if (watcher.fd != NULL) {
+ ev.events = (uint32_t)(EPOLLIN | EPOLLOUT | EPOLLET);
+ ev.data.ptr = fd;
+ err = epoll_ctl(h->epoll_fd, EPOLL_CTL_ADD, fd->fd, &ev);
+ if (err < 0) {
+ /* FDs may be added to a pollset multiple times, so EEXIST is normal. */
+ if (errno != EEXIST) {
+ gpr_log(GPR_ERROR, "epoll_ctl add for %d failed: %s", fd->fd,
+ strerror(errno));
+ }
+ }
+ }
+ grpc_fd_end_poll(exec_ctx, &watcher, 0, 0);
+}
+
+static void perform_delayed_add(grpc_exec_ctx *exec_ctx, void *arg,
+ bool iomgr_status) {
+ delayed_add *da = arg;
+
+ if (!grpc_fd_is_orphaned(da->fd)) {
+ finally_add_fd(exec_ctx, da->pollset, da->fd);
+ }
+
+ gpr_mu_lock(da->pollset->mu);
+ da->pollset->in_flight_cbs--;
+ if (da->pollset->shutting_down) {
+ /* We don't care about this pollset anymore. */
+ if (da->pollset->in_flight_cbs == 0 && !da->pollset->called_shutdown) {
+ da->pollset->called_shutdown = 1;
+ grpc_exec_ctx_enqueue(exec_ctx, da->pollset->shutdown_done, true, NULL);
+ }
+ }
+ gpr_mu_unlock(da->pollset->mu);
+
+ GRPC_FD_UNREF(da->fd, "delayed_add");
+
+ gpr_free(da);
+}
+
+static void multipoll_with_epoll_pollset_add_fd(grpc_exec_ctx *exec_ctx,
+ grpc_pollset *pollset,
+ grpc_fd *fd,
+ int and_unlock_pollset) {
+ if (and_unlock_pollset) {
+ gpr_mu_unlock(pollset->mu);
+ finally_add_fd(exec_ctx, pollset, fd);
+ } else {
+ delayed_add *da = gpr_malloc(sizeof(*da));
+ da->pollset = pollset;
+ da->fd = fd;
+ GRPC_FD_REF(fd, "delayed_add");
+ grpc_closure_init(&da->closure, perform_delayed_add, da);
+ pollset->in_flight_cbs++;
+ grpc_exec_ctx_enqueue(exec_ctx, &da->closure, true, NULL);
+ }
+}
+
+/* TODO(klempner): We probably want to turn this down a bit */
+#define GRPC_EPOLL_MAX_EVENTS 1000
+
+static void multipoll_with_epoll_pollset_maybe_work_and_unlock(
+ grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, grpc_pollset_worker *worker,
+ gpr_timespec deadline, gpr_timespec now) {
+ struct epoll_event ep_ev[GRPC_EPOLL_MAX_EVENTS];
+ int ep_rv;
+ int poll_rv;
+ epoll_hdr *h = pollset->data.ptr;
+ int timeout_ms;
+ struct pollfd pfds[2];
+
+ /* If you want to ignore epoll's ability to sanely handle parallel pollers,
+ * for a more apples-to-apples performance comparison with poll, add a
+ * if (pollset->counter != 0) { return 0; }
+ * here.
+ */
+
+ gpr_mu_unlock(pollset->mu);
+
+ timeout_ms = grpc_poll_deadline_to_millis_timeout(deadline, now);
+
+ pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd);
+ pfds[0].events = POLLIN;
+ pfds[0].revents = 0;
+ pfds[1].fd = h->epoll_fd;
+ pfds[1].events = POLLIN;
+ pfds[1].revents = 0;
+
+ /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
+ even going into the blocking annotation if possible */
+ GPR_TIMER_BEGIN("poll", 0);
+ GRPC_SCHEDULING_START_BLOCKING_REGION;
+ poll_rv = grpc_poll_function(pfds, 2, timeout_ms);
+ GRPC_SCHEDULING_END_BLOCKING_REGION;
+ GPR_TIMER_END("poll", 0);
+
+ if (poll_rv < 0) {
+ if (errno != EINTR) {
+ gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
+ }
+ } else if (poll_rv == 0) {
+ /* do nothing */
+ } else {
+ if (pfds[0].revents) {
+ grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd);
+ }
+ if (pfds[1].revents) {
+ do {
+ /* The following epoll_wait never blocks; it has a timeout of 0 */
+ ep_rv = epoll_wait(h->epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, 0);
+ if (ep_rv < 0) {
+ if (errno != EINTR) {
+ gpr_log(GPR_ERROR, "epoll_wait() failed: %s", strerror(errno));
+ }
+ } else {
+ int i;
+ for (i = 0; i < ep_rv; ++i) {
+ grpc_fd *fd = ep_ev[i].data.ptr;
+ /* TODO(klempner): We might want to consider making err and pri
+ * separate events */
+ int cancel = ep_ev[i].events & (EPOLLERR | EPOLLHUP);
+ int read_ev = ep_ev[i].events & (EPOLLIN | EPOLLPRI);
+ int write_ev = ep_ev[i].events & EPOLLOUT;
+ if (fd == NULL) {
+ grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
+ } else {
+ if (read_ev || cancel) {
+ grpc_fd_become_readable(exec_ctx, fd);
+ }
+ if (write_ev || cancel) {
+ grpc_fd_become_writable(exec_ctx, fd);
+ }
+ }
+ }
+ }
+ } while (ep_rv == GRPC_EPOLL_MAX_EVENTS);
+ }
+ }
+}
+
+static void multipoll_with_epoll_pollset_finish_shutdown(
+ grpc_pollset *pollset) {}
+
+static void multipoll_with_epoll_pollset_destroy(grpc_pollset *pollset) {
+ epoll_hdr *h = pollset->data.ptr;
+ close(h->epoll_fd);
+ remove_epoll_fd_from_global_list(h->epoll_fd);
+ gpr_free(h);
+}
+
+static const grpc_pollset_vtable multipoll_with_epoll_pollset = {
+ multipoll_with_epoll_pollset_add_fd,
+ multipoll_with_epoll_pollset_maybe_work_and_unlock,
+ multipoll_with_epoll_pollset_finish_shutdown,
+ multipoll_with_epoll_pollset_destroy};
+
+static void epoll_become_multipoller(grpc_exec_ctx *exec_ctx,
+ grpc_pollset *pollset, grpc_fd **fds,
+ size_t nfds) {
+ size_t i;
+ epoll_hdr *h = gpr_malloc(sizeof(epoll_hdr));
+ struct epoll_event ev;
+ int err;
+
+ pollset->vtable = &multipoll_with_epoll_pollset;
+ pollset->data.ptr = h;
+ h->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
+ if (h->epoll_fd < 0) {
+ /* TODO(klempner): Fall back to poll here, especially on ENOSYS */
+ gpr_log(GPR_ERROR, "epoll_create1 failed: %s", strerror(errno));
+ abort();
+ }
+ add_epoll_fd_to_global_list(h->epoll_fd);
+
+ ev.events = (uint32_t)(EPOLLIN | EPOLLET);
+ ev.data.ptr = NULL;
+ err = epoll_ctl(h->epoll_fd, EPOLL_CTL_ADD,
+ GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd), &ev);
+ if (err < 0) {
+ gpr_log(GPR_ERROR, "epoll_ctl add for %d failed: %s",
+ GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd),
+ strerror(errno));
+ }
+
+ for (i = 0; i < nfds; i++) {
+ multipoll_with_epoll_pollset_add_fd(exec_ctx, pollset, fds[i], 0);
+ }
+}
+
+grpc_platform_become_multipoller_type grpc_platform_become_multipoller =
+ epoll_become_multipoller;
+
+#else /* GPR_LINUX_MULTIPOLL_WITH_EPOLL */
+
+void grpc_remove_fd_from_all_epoll_sets(int fd) {}
+
+#endif /* GPR_LINUX_MULTIPOLL_WITH_EPOLL */
+
#endif
diff --git a/src/core/iomgr/ev_poll_and_epoll_posix.h b/src/core/iomgr/ev_poll_and_epoll_posix.h
index e70807a21c9aea3a7109b67a47756151ccdc1a15..72a2576415181c8c2893535730847bede31de0bb 100644
--- a/src/core/iomgr/ev_poll_and_epoll_posix.h
+++ b/src/core/iomgr/ev_poll_and_epoll_posix.h
@@ -31,7 +31,9 @@
*
*/
- #ifndef GRPC_INTERNAL_CORE_IOMGR_EV_POLL_AND_EPOLL_POSIX_H
- #define GRPC_INTERNAL_CORE_IOMGR_EV_POLL_AND_EPOLL_POSIX_H
+#ifndef GRPC_INTERNAL_CORE_IOMGR_EV_POLL_AND_EPOLL_POSIX_H
+#define GRPC_INTERNAL_CORE_IOMGR_EV_POLL_AND_EPOLL_POSIX_H
- #endif // GRPC_INTERNAL_CORE_IOMGR_EV_POLL_AND_EPOLL_POSIX_H
+#include "src/core/iomgr/ev_posix.h"
+
+#endif // GRPC_INTERNAL_CORE_IOMGR_EV_POLL_AND_EPOLL_POSIX_H
diff --git a/src/core/iomgr/ev_posix.h b/src/core/iomgr/ev_posix.h
index 4df1331f1f2947f4e04b2b8c451bd1e34b315f17..03e2b0c01c6c6c0126a049e3176942cc402f9266 100644
--- a/src/core/iomgr/ev_posix.h
+++ b/src/core/iomgr/ev_posix.h
@@ -35,12 +35,13 @@
#define GRPC_INTERNAL_CORE_IOMGR_EV_POSIX_H
#include "src/core/iomgr/exec_ctx.h"
+#include "src/core/iomgr/pollset.h"
typedef struct grpc_fd grpc_fd;
-typedef struct grpc_pollset grpc_pollset;
-typedef struct grpc_pollset_worker grpc_pollset_worker;
typedef struct grpc_event_engine_vtable {
+ size_t pollset_size;
+
grpc_fd *(*fd_create)(int fd, const char *name);
int (*fd_wrapped_fd)(grpc_fd *fd);
void (*fd_orphan)(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure *on_done,
@@ -50,6 +51,17 @@ typedef struct grpc_event_engine_vtable {
grpc_closure *closure);
void (*fd_notify_on_write)(grpc_exec_ctx *exec_ctx, grpc_fd *fd,
grpc_closure *closure);
+
+ void (*pollset_init)(grpc_pollset *pollset, gpr_mu *mu);
+ void (*pollset_shutdown)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ grpc_closure *closure);
+ void (*pollset_reset)(grpc_pollset *pollset);
+ void (*pollset_destroy)(grpc_pollset *pollset);
+ void (*pollset_work)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
+ grpc_pollset_worker **worker, gpr_timespec now,
+ gpr_timespec deadline);
+ void (*pollset_kick)(grpc_pollset *pollset,
+ grpc_pollset_worker *specific_worker);
} grpc_event_engine_vtable;
extern const grpc_event_engine_vtable *grpc_event_engine;
diff --git a/src/core/iomgr/iomgr_posix.c b/src/core/iomgr/iomgr_posix.c
index f1094f5a48e440077a90bafade0858ddb7714040..6e8e09a8514bf5df4269571c03e21844b69eb726 100644
--- a/src/core/iomgr/iomgr_posix.c
+++ b/src/core/iomgr/iomgr_posix.c
@@ -35,18 +35,18 @@
#ifdef GPR_POSIX_SOCKET
-#include "src/core/iomgr/iomgr_posix.h"
#include "src/core/debug/trace.h"
#include "src/core/iomgr/ev_posix.h"
+#include "src/core/iomgr/iomgr_posix.h"
#include "src/core/iomgr/tcp_posix.h"
void grpc_iomgr_platform_init(void) {
- grpc_fd_global_init();
+ grpc_event_engine_init();
grpc_register_tracer("tcp", &grpc_tcp_trace);
}
void grpc_iomgr_platform_flush(void) {}
-void grpc_iomgr_platform_shutdown(void) { grpc_fd_global_shutdown(); }
+void grpc_iomgr_platform_shutdown(void) { grpc_event_engine_shutdown(); }
#endif /* GRPC_POSIX_SOCKET */
diff --git a/src/core/iomgr/pollset.h b/src/core/iomgr/pollset.h
index 5e185cf5f3233e439504837acefdcb998a8d301a..39e4ff2440837f7b2878c6d0407f7ef74f7df945 100644
--- a/src/core/iomgr/pollset.h
+++ b/src/core/iomgr/pollset.h
@@ -49,18 +49,8 @@
- a completion queue might keep a pollset with an entry for each transport
that is servicing a call that it's tracking */
-<<<<<<< HEAD
-#ifdef GPR_POSIX_SOCKET
-#include "src/core/iomgr/ev_posix.h"
-#endif
-
-#ifdef GPR_WIN32
-#include "src/core/iomgr/pollset_windows.h"
-#endif
-=======
typedef struct grpc_pollset grpc_pollset;
typedef struct grpc_pollset_worker grpc_pollset_worker;
->>>>>>> c605c62b30ca15c83a7c4e98386062c62de0d36d
size_t grpc_pollset_size(void);
void grpc_pollset_init(grpc_pollset *pollset, gpr_mu *mu);
diff --git a/src/core/iomgr/pollset_multipoller_with_epoll.c b/src/core/iomgr/pollset_multipoller_with_epoll.c
deleted file mode 100644
index 27884166dc757881c5a81bbee14c8ff50225b77b..0000000000000000000000000000000000000000
--- a/src/core/iomgr/pollset_multipoller_with_epoll.c
+++ /dev/null
@@ -1,324 +0,0 @@
-/*
- *
- * Copyright 2015-2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <grpc/support/port_platform.h>
-
-#ifdef GPR_LINUX_MULTIPOLL_WITH_EPOLL
-
-#include <errno.h>
-#include <poll.h>
-#include <string.h>
-#include <sys/epoll.h>
-#include <unistd.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/useful.h>
-
-#include "src/core/iomgr/ev_posix.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/block_annotate.h"
-
-struct epoll_fd_list {
- int *epoll_fds;
- size_t count;
- size_t capacity;
-};
-
-static struct epoll_fd_list epoll_fd_global_list;
-static gpr_once init_epoll_fd_list_mu = GPR_ONCE_INIT;
-static gpr_mu epoll_fd_list_mu;
-
-static void init_mu(void) { gpr_mu_init(&epoll_fd_list_mu); }
-
-static void add_epoll_fd_to_global_list(int epoll_fd) {
- gpr_once_init(&init_epoll_fd_list_mu, init_mu);
-
- gpr_mu_lock(&epoll_fd_list_mu);
- if (epoll_fd_global_list.count == epoll_fd_global_list.capacity) {
- epoll_fd_global_list.capacity =
- GPR_MAX((size_t)8, epoll_fd_global_list.capacity * 2);
- epoll_fd_global_list.epoll_fds =
- gpr_realloc(epoll_fd_global_list.epoll_fds,
- epoll_fd_global_list.capacity * sizeof(int));
- }
- epoll_fd_global_list.epoll_fds[epoll_fd_global_list.count++] = epoll_fd;
- gpr_mu_unlock(&epoll_fd_list_mu);
-}
-
-static void remove_epoll_fd_from_global_list(int epoll_fd) {
- gpr_mu_lock(&epoll_fd_list_mu);
- GPR_ASSERT(epoll_fd_global_list.count > 0);
- for (size_t i = 0; i < epoll_fd_global_list.count; i++) {
- if (epoll_fd == epoll_fd_global_list.epoll_fds[i]) {
- epoll_fd_global_list.epoll_fds[i] =
- epoll_fd_global_list.epoll_fds[--(epoll_fd_global_list.count)];
- break;
- }
- }
- gpr_mu_unlock(&epoll_fd_list_mu);
-}
-
-void grpc_remove_fd_from_all_epoll_sets(int fd) {
- int err;
- gpr_once_init(&init_epoll_fd_list_mu, init_mu);
- gpr_mu_lock(&epoll_fd_list_mu);
- if (epoll_fd_global_list.count == 0) {
- gpr_mu_unlock(&epoll_fd_list_mu);
- return;
- }
- for (size_t i = 0; i < epoll_fd_global_list.count; i++) {
- err = epoll_ctl(epoll_fd_global_list.epoll_fds[i], EPOLL_CTL_DEL, fd, NULL);
- if (err < 0 && errno != ENOENT) {
- gpr_log(GPR_ERROR, "epoll_ctl del for %d failed: %s", fd,
- strerror(errno));
- }
- }
- gpr_mu_unlock(&epoll_fd_list_mu);
-}
-
-typedef struct {
- grpc_pollset *pollset;
- grpc_fd *fd;
- grpc_closure closure;
-} delayed_add;
-
-typedef struct { int epoll_fd; } pollset_hdr;
-
-static void finally_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
- grpc_fd *fd) {
- pollset_hdr *h = pollset->data.ptr;
- struct epoll_event ev;
- int err;
- grpc_fd_watcher watcher;
-
- /* We pretend to be polling whilst adding an fd to keep the fd from being
- closed during the add. This may result in a spurious wakeup being assigned
- to this pollset whilst adding, but that should be benign. */
- GPR_ASSERT(grpc_fd_begin_poll(fd, pollset, NULL, 0, 0, &watcher) == 0);
- if (watcher.fd != NULL) {
- ev.events = (uint32_t)(EPOLLIN | EPOLLOUT | EPOLLET);
- ev.data.ptr = fd;
- err = epoll_ctl(h->epoll_fd, EPOLL_CTL_ADD, fd->fd, &ev);
- if (err < 0) {
- /* FDs may be added to a pollset multiple times, so EEXIST is normal. */
- if (errno != EEXIST) {
- gpr_log(GPR_ERROR, "epoll_ctl add for %d failed: %s", fd->fd,
- strerror(errno));
- }
- }
- }
- grpc_fd_end_poll(exec_ctx, &watcher, 0, 0);
-}
-
-static void perform_delayed_add(grpc_exec_ctx *exec_ctx, void *arg,
- bool iomgr_status) {
- delayed_add *da = arg;
-
- if (!grpc_fd_is_orphaned(da->fd)) {
- finally_add_fd(exec_ctx, da->pollset, da->fd);
- }
-
- gpr_mu_lock(da->pollset->mu);
- da->pollset->in_flight_cbs--;
- if (da->pollset->shutting_down) {
- /* We don't care about this pollset anymore. */
- if (da->pollset->in_flight_cbs == 0 && !da->pollset->called_shutdown) {
- da->pollset->called_shutdown = 1;
- grpc_exec_ctx_enqueue(exec_ctx, da->pollset->shutdown_done, true, NULL);
- }
- }
- gpr_mu_unlock(da->pollset->mu);
-
- GRPC_FD_UNREF(da->fd, "delayed_add");
-
- gpr_free(da);
-}
-
-static void multipoll_with_epoll_pollset_add_fd(grpc_exec_ctx *exec_ctx,
- grpc_pollset *pollset,
- grpc_fd *fd,
- int and_unlock_pollset) {
- if (and_unlock_pollset) {
- gpr_mu_unlock(pollset->mu);
- finally_add_fd(exec_ctx, pollset, fd);
- } else {
- delayed_add *da = gpr_malloc(sizeof(*da));
- da->pollset = pollset;
- da->fd = fd;
- GRPC_FD_REF(fd, "delayed_add");
- grpc_closure_init(&da->closure, perform_delayed_add, da);
- pollset->in_flight_cbs++;
- grpc_exec_ctx_enqueue(exec_ctx, &da->closure, true, NULL);
- }
-}
-
-/* TODO(klempner): We probably want to turn this down a bit */
-#define GRPC_EPOLL_MAX_EVENTS 1000
-
-static void multipoll_with_epoll_pollset_maybe_work_and_unlock(
- grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, grpc_pollset_worker *worker,
- gpr_timespec deadline, gpr_timespec now) {
- struct epoll_event ep_ev[GRPC_EPOLL_MAX_EVENTS];
- int ep_rv;
- int poll_rv;
- pollset_hdr *h = pollset->data.ptr;
- int timeout_ms;
- struct pollfd pfds[2];
-
- /* If you want to ignore epoll's ability to sanely handle parallel pollers,
- * for a more apples-to-apples performance comparison with poll, add a
- * if (pollset->counter != 0) { return 0; }
- * here.
- */
-
- gpr_mu_unlock(pollset->mu);
-
- timeout_ms = grpc_poll_deadline_to_millis_timeout(deadline, now);
-
- pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd);
- pfds[0].events = POLLIN;
- pfds[0].revents = 0;
- pfds[1].fd = h->epoll_fd;
- pfds[1].events = POLLIN;
- pfds[1].revents = 0;
-
- /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
- even going into the blocking annotation if possible */
- GPR_TIMER_BEGIN("poll", 0);
- GRPC_SCHEDULING_START_BLOCKING_REGION;
- poll_rv = grpc_poll_function(pfds, 2, timeout_ms);
- GRPC_SCHEDULING_END_BLOCKING_REGION;
- GPR_TIMER_END("poll", 0);
-
- if (poll_rv < 0) {
- if (errno != EINTR) {
- gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
- }
- } else if (poll_rv == 0) {
- /* do nothing */
- } else {
- if (pfds[0].revents) {
- grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd);
- }
- if (pfds[1].revents) {
- do {
- /* The following epoll_wait never blocks; it has a timeout of 0 */
- ep_rv = epoll_wait(h->epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, 0);
- if (ep_rv < 0) {
- if (errno != EINTR) {
- gpr_log(GPR_ERROR, "epoll_wait() failed: %s", strerror(errno));
- }
- } else {
- int i;
- for (i = 0; i < ep_rv; ++i) {
- grpc_fd *fd = ep_ev[i].data.ptr;
- /* TODO(klempner): We might want to consider making err and pri
- * separate events */
- int cancel = ep_ev[i].events & (EPOLLERR | EPOLLHUP);
- int read_ev = ep_ev[i].events & (EPOLLIN | EPOLLPRI);
- int write_ev = ep_ev[i].events & EPOLLOUT;
- if (fd == NULL) {
- grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
- } else {
- if (read_ev || cancel) {
- grpc_fd_become_readable(exec_ctx, fd);
- }
- if (write_ev || cancel) {
- grpc_fd_become_writable(exec_ctx, fd);
- }
- }
- }
- }
- } while (ep_rv == GRPC_EPOLL_MAX_EVENTS);
- }
- }
-}
-
-static void multipoll_with_epoll_pollset_finish_shutdown(
- grpc_pollset *pollset) {}
-
-static void multipoll_with_epoll_pollset_destroy(grpc_pollset *pollset) {
- pollset_hdr *h = pollset->data.ptr;
- close(h->epoll_fd);
- remove_epoll_fd_from_global_list(h->epoll_fd);
- gpr_free(h);
-}
-
-static const grpc_pollset_vtable multipoll_with_epoll_pollset = {
- multipoll_with_epoll_pollset_add_fd,
- multipoll_with_epoll_pollset_maybe_work_and_unlock,
- multipoll_with_epoll_pollset_finish_shutdown,
- multipoll_with_epoll_pollset_destroy};
-
-static void epoll_become_multipoller(grpc_exec_ctx *exec_ctx,
- grpc_pollset *pollset, grpc_fd **fds,
- size_t nfds) {
- size_t i;
- pollset_hdr *h = gpr_malloc(sizeof(pollset_hdr));
- struct epoll_event ev;
- int err;
-
- pollset->vtable = &multipoll_with_epoll_pollset;
- pollset->data.ptr = h;
- h->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
- if (h->epoll_fd < 0) {
- /* TODO(klempner): Fall back to poll here, especially on ENOSYS */
- gpr_log(GPR_ERROR, "epoll_create1 failed: %s", strerror(errno));
- abort();
- }
- add_epoll_fd_to_global_list(h->epoll_fd);
-
- ev.events = (uint32_t)(EPOLLIN | EPOLLET);
- ev.data.ptr = NULL;
- err = epoll_ctl(h->epoll_fd, EPOLL_CTL_ADD,
- GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd), &ev);
- if (err < 0) {
- gpr_log(GPR_ERROR, "epoll_ctl add for %d failed: %s",
- GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd),
- strerror(errno));
- }
-
- for (i = 0; i < nfds; i++) {
- multipoll_with_epoll_pollset_add_fd(exec_ctx, pollset, fds[i], 0);
- }
-}
-
-grpc_platform_become_multipoller_type grpc_platform_become_multipoller =
- epoll_become_multipoller;
-
-#else /* GPR_LINUX_MULTIPOLL_WITH_EPOLL */
-
-void grpc_remove_fd_from_all_epoll_sets(int fd) {}
-
-#endif /* GPR_LINUX_MULTIPOLL_WITH_EPOLL */
diff --git a/src/core/iomgr/pollset_multipoller_with_poll_posix.c b/src/core/iomgr/pollset_multipoller_with_poll_posix.c
deleted file mode 100644
index ef3d8c26132ad889db900bcbc8704a3cad56569d..0000000000000000000000000000000000000000
--- a/src/core/iomgr/pollset_multipoller_with_poll_posix.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
- *
- * Copyright 2015-2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <grpc/support/port_platform.h>
-
-#ifdef GPR_POSIX_SOCKET
-
-#include "src/core/iomgr/pollset_posix.h"
-
-#include <errno.h>
-#include <poll.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/useful.h>
-
-#include "src/core/iomgr/ev_posix.h"
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/support/block_annotate.h"
-
-typedef struct {
- /* all polled fds */
- size_t fd_count;
- size_t fd_capacity;
- grpc_fd **fds;
- /* fds that have been removed from the pollset explicitly */
- size_t del_count;
- size_t del_capacity;
- grpc_fd **dels;
-} pollset_hdr;
-
-static void multipoll_with_poll_pollset_add_fd(grpc_exec_ctx *exec_ctx,
- grpc_pollset *pollset,
- grpc_fd *fd,
- int and_unlock_pollset) {
- size_t i;
- pollset_hdr *h = pollset->data.ptr;
- /* TODO(ctiller): this is O(num_fds^2); maybe switch to a hash set here */
- for (i = 0; i < h->fd_count; i++) {
- if (h->fds[i] == fd) goto exit;
- }
- if (h->fd_count == h->fd_capacity) {
- h->fd_capacity = GPR_MAX(h->fd_capacity + 8, h->fd_count * 3 / 2);
- h->fds = gpr_realloc(h->fds, sizeof(grpc_fd *) * h->fd_capacity);
- }
- h->fds[h->fd_count++] = fd;
- GRPC_FD_REF(fd, "multipoller");
-exit:
- if (and_unlock_pollset) {
- gpr_mu_unlock(pollset->mu);
- }
-}
-
-static void multipoll_with_poll_pollset_maybe_work_and_unlock(
- grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, grpc_pollset_worker *worker,
- gpr_timespec deadline, gpr_timespec now) {
-#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR)
-#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR)
-
- int timeout;
- int r;
- size_t i, j, fd_count;
- nfds_t pfd_count;
- pollset_hdr *h;
- /* TODO(ctiller): inline some elements to avoid an allocation */
- grpc_fd_watcher *watchers;
- struct pollfd *pfds;
-
- h = pollset->data.ptr;
- timeout = grpc_poll_deadline_to_millis_timeout(deadline, now);
- /* TODO(ctiller): perform just one malloc here if we exceed the inline case */
- pfds = gpr_malloc(sizeof(*pfds) * (h->fd_count + 2));
- watchers = gpr_malloc(sizeof(*watchers) * (h->fd_count + 2));
- fd_count = 0;
- pfd_count = 2;
- pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd);
- pfds[0].events = POLLIN;
- pfds[0].revents = 0;
- pfds[1].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd);
- pfds[1].events = POLLIN;
- pfds[1].revents = 0;
- for (i = 0; i < h->fd_count; i++) {
- int remove = grpc_fd_is_orphaned(h->fds[i]);
- for (j = 0; !remove && j < h->del_count; j++) {
- if (h->fds[i] == h->dels[j]) remove = 1;
- }
- if (remove) {
- GRPC_FD_UNREF(h->fds[i], "multipoller");
- } else {
- h->fds[fd_count++] = h->fds[i];
- watchers[pfd_count].fd = h->fds[i];
- pfds[pfd_count].fd = h->fds[i]->fd;
- pfds[pfd_count].revents = 0;
- pfd_count++;
- }
- }
- for (j = 0; j < h->del_count; j++) {
- GRPC_FD_UNREF(h->dels[j], "multipoller_del");
- }
- h->del_count = 0;
- h->fd_count = fd_count;
- gpr_mu_unlock(pollset->mu);
-
- for (i = 2; i < pfd_count; i++) {
- pfds[i].events = (short)grpc_fd_begin_poll(watchers[i].fd, pollset, worker,
- POLLIN, POLLOUT, &watchers[i]);
- }
-
- /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
- even going into the blocking annotation if possible */
- GRPC_SCHEDULING_START_BLOCKING_REGION;
- r = grpc_poll_function(pfds, pfd_count, timeout);
- GRPC_SCHEDULING_END_BLOCKING_REGION;
-
- if (r < 0) {
- if (errno != EINTR) {
- gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
- }
- for (i = 2; i < pfd_count; i++) {
- grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
- }
- } else if (r == 0) {
- for (i = 2; i < pfd_count; i++) {
- grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
- }
- } else {
- if (pfds[0].revents & POLLIN_CHECK) {
- grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
- }
- if (pfds[1].revents & POLLIN_CHECK) {
- grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd);
- }
- for (i = 2; i < pfd_count; i++) {
- if (watchers[i].fd == NULL) {
- grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
- continue;
- }
- grpc_fd_end_poll(exec_ctx, &watchers[i], pfds[i].revents & POLLIN_CHECK,
- pfds[i].revents & POLLOUT_CHECK);
- }
- }
-
- gpr_free(pfds);
- gpr_free(watchers);
-}
-
-static void multipoll_with_poll_pollset_finish_shutdown(grpc_pollset *pollset) {
- size_t i;
- pollset_hdr *h = pollset->data.ptr;
- for (i = 0; i < h->fd_count; i++) {
- GRPC_FD_UNREF(h->fds[i], "multipoller");
- }
- for (i = 0; i < h->del_count; i++) {
- GRPC_FD_UNREF(h->dels[i], "multipoller_del");
- }
- h->fd_count = 0;
- h->del_count = 0;
-}
-
-static void multipoll_with_poll_pollset_destroy(grpc_pollset *pollset) {
- pollset_hdr *h = pollset->data.ptr;
- multipoll_with_poll_pollset_finish_shutdown(pollset);
- gpr_free(h->fds);
- gpr_free(h->dels);
- gpr_free(h);
-}
-
-static const grpc_pollset_vtable multipoll_with_poll_pollset = {
- multipoll_with_poll_pollset_add_fd,
- multipoll_with_poll_pollset_maybe_work_and_unlock,
- multipoll_with_poll_pollset_finish_shutdown,
- multipoll_with_poll_pollset_destroy};
-
-void grpc_poll_become_multipoller(grpc_exec_ctx *exec_ctx,
- grpc_pollset *pollset, grpc_fd **fds,
- size_t nfds) {
- size_t i;
- pollset_hdr *h = gpr_malloc(sizeof(pollset_hdr));
- pollset->vtable = &multipoll_with_poll_pollset;
- pollset->data.ptr = h;
- h->fd_count = nfds;
- h->fd_capacity = nfds;
- h->fds = gpr_malloc(nfds * sizeof(grpc_fd *));
- h->del_count = 0;
- h->del_capacity = 0;
- h->dels = NULL;
- for (i = 0; i < nfds; i++) {
- h->fds[i] = fds[i];
- GRPC_FD_REF(fds[i], "multipoller");
- }
-}
-
-#endif /* GPR_POSIX_SOCKET */
-
-#ifdef GPR_POSIX_MULTIPOLL_WITH_POLL
-grpc_platform_become_multipoller_type grpc_platform_become_multipoller =
- grpc_poll_become_multipoller;
-#endif
diff --git a/src/core/iomgr/pollset_posix.c b/src/core/iomgr/pollset_posix.c
deleted file mode 100644
index 20200113cdbd2d55d90cfcabfc2d18a7da7b22e4..0000000000000000000000000000000000000000
--- a/src/core/iomgr/pollset_posix.c
+++ /dev/null
@@ -1,633 +0,0 @@
-/*
- *
- * Copyright 2015-2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <grpc/support/port_platform.h>
-
-#ifdef GPR_POSIX_SOCKET
-
-#include "src/core/iomgr/pollset_posix.h"
-
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/thd.h>
-#include <grpc/support/tls.h>
-#include <grpc/support/useful.h>
-
-#include "src/core/iomgr/ev_posix.h"
-#include "src/core/iomgr/iomgr_internal.h"
-#include "src/core/iomgr/socket_utils_posix.h"
-#include "src/core/profiling/timers.h"
-#include "src/core/support/block_annotate.h"
-
-GPR_TLS_DECL(g_current_thread_poller);
-GPR_TLS_DECL(g_current_thread_worker);
-
-/** Default poll() function - a pointer so that it can be overridden by some
- * tests */
-grpc_poll_function_type grpc_poll_function = poll;
-
-/** The alarm system needs to be able to wakeup 'some poller' sometimes
- * (specifically when a new alarm needs to be triggered earlier than the next
- * alarm 'epoch').
- * This wakeup_fd gives us something to alert on when such a case occurs. */
-grpc_wakeup_fd grpc_global_wakeup_fd;
-
-static void remove_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
- worker->prev->next = worker->next;
- worker->next->prev = worker->prev;
-}
-
-int grpc_pollset_has_workers(grpc_pollset *p) {
- return p->root_worker.next != &p->root_worker;
-}
-
-static grpc_pollset_worker *pop_front_worker(grpc_pollset *p) {
- if (grpc_pollset_has_workers(p)) {
- grpc_pollset_worker *w = p->root_worker.next;
- remove_worker(p, w);
- return w;
- } else {
- return NULL;
- }
-}
-
-static void push_back_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
- worker->next = &p->root_worker;
- worker->prev = worker->next->prev;
- worker->prev->next = worker->next->prev = worker;
-}
-
-static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
- worker->prev = &p->root_worker;
- worker->next = worker->prev->next;
- worker->prev->next = worker->next->prev = worker;
-}
-
-size_t grpc_pollset_size(void) { return sizeof(grpc_pollset); }
-
-void grpc_pollset_kick_ext(grpc_pollset *p,
- grpc_pollset_worker *specific_worker,
- uint32_t flags) {
- GPR_TIMER_BEGIN("grpc_pollset_kick_ext", 0);
-
- /* pollset->mu already held */
- if (specific_worker != NULL) {
- if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
- GPR_TIMER_BEGIN("grpc_pollset_kick_ext.broadcast", 0);
- GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
- for (specific_worker = p->root_worker.next;
- specific_worker != &p->root_worker;
- specific_worker = specific_worker->next) {
- grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
- }
- p->kicked_without_pollers = 1;
- GPR_TIMER_END("grpc_pollset_kick_ext.broadcast", 0);
- } else if (gpr_tls_get(&g_current_thread_worker) !=
- (intptr_t)specific_worker) {
- GPR_TIMER_MARK("different_thread_worker", 0);
- if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
- specific_worker->reevaluate_polling_on_wakeup = 1;
- }
- specific_worker->kicked_specifically = 1;
- grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
- } else if ((flags & GRPC_POLLSET_CAN_KICK_SELF) != 0) {
- GPR_TIMER_MARK("kick_yoself", 0);
- if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) {
- specific_worker->reevaluate_polling_on_wakeup = 1;
- }
- specific_worker->kicked_specifically = 1;
- grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
- }
- } else if (gpr_tls_get(&g_current_thread_poller) != (intptr_t)p) {
- GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0);
- GPR_TIMER_MARK("kick_anonymous", 0);
- specific_worker = pop_front_worker(p);
- if (specific_worker != NULL) {
- if (gpr_tls_get(&g_current_thread_worker) == (intptr_t)specific_worker) {
- GPR_TIMER_MARK("kick_anonymous_not_self", 0);
- push_back_worker(p, specific_worker);
- specific_worker = pop_front_worker(p);
- if ((flags & GRPC_POLLSET_CAN_KICK_SELF) == 0 &&
- gpr_tls_get(&g_current_thread_worker) ==
- (intptr_t)specific_worker) {
- push_back_worker(p, specific_worker);
- specific_worker = NULL;
- }
- }
- if (specific_worker != NULL) {
- GPR_TIMER_MARK("finally_kick", 0);
- push_back_worker(p, specific_worker);
- grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd);
- }
- } else {
- GPR_TIMER_MARK("kicked_no_pollers", 0);
- p->kicked_without_pollers = 1;
- }
- }
-
- GPR_TIMER_END("grpc_pollset_kick_ext", 0);
-}
-
-void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) {
- grpc_pollset_kick_ext(p, specific_worker, 0);
-}
-
-/* global state management */
-
-void grpc_pollset_global_init(void) {
- gpr_tls_init(&g_current_thread_poller);
- gpr_tls_init(&g_current_thread_worker);
- grpc_wakeup_fd_global_init();
- grpc_wakeup_fd_init(&grpc_global_wakeup_fd);
-}
-
-void grpc_pollset_global_shutdown(void) {
- grpc_wakeup_fd_destroy(&grpc_global_wakeup_fd);
- gpr_tls_destroy(&g_current_thread_poller);
- gpr_tls_destroy(&g_current_thread_worker);
- grpc_wakeup_fd_global_destroy();
-}
-
-void grpc_kick_poller(void) { grpc_wakeup_fd_wakeup(&grpc_global_wakeup_fd); }
-
-/* main interface */
-
-static void become_basic_pollset(grpc_pollset *pollset, grpc_fd *fd_or_null);
-
-void grpc_pollset_init(grpc_pollset *pollset, gpr_mu *mu) {
- pollset->mu = mu;
- pollset->root_worker.next = pollset->root_worker.prev = &pollset->root_worker;
- pollset->in_flight_cbs = 0;
- pollset->shutting_down = 0;
- pollset->called_shutdown = 0;
- pollset->kicked_without_pollers = 0;
- pollset->idle_jobs.head = pollset->idle_jobs.tail = NULL;
- pollset->local_wakeup_cache = NULL;
- pollset->kicked_without_pollers = 0;
- become_basic_pollset(pollset, NULL);
-}
-
-void grpc_pollset_destroy(grpc_pollset *pollset) {
- GPR_ASSERT(pollset->in_flight_cbs == 0);
- GPR_ASSERT(!grpc_pollset_has_workers(pollset));
- GPR_ASSERT(pollset->idle_jobs.head == pollset->idle_jobs.tail);
- pollset->vtable->destroy(pollset);
- while (pollset->local_wakeup_cache) {
- grpc_cached_wakeup_fd *next = pollset->local_wakeup_cache->next;
- grpc_wakeup_fd_destroy(&pollset->local_wakeup_cache->fd);
- gpr_free(pollset->local_wakeup_cache);
- pollset->local_wakeup_cache = next;
- }
-}
-
-void grpc_pollset_reset(grpc_pollset *pollset) {
- GPR_ASSERT(pollset->shutting_down);
- GPR_ASSERT(pollset->in_flight_cbs == 0);
- GPR_ASSERT(!grpc_pollset_has_workers(pollset));
- GPR_ASSERT(pollset->idle_jobs.head == pollset->idle_jobs.tail);
- pollset->vtable->destroy(pollset);
- pollset->shutting_down = 0;
- pollset->called_shutdown = 0;
- pollset->kicked_without_pollers = 0;
- become_basic_pollset(pollset, NULL);
-}
-
-void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
- grpc_fd *fd) {
- gpr_mu_lock(pollset->mu);
- pollset->vtable->add_fd(exec_ctx, pollset, fd, 1);
-/* the following (enabled only in debug) will reacquire and then release
- our lock - meaning that if the unlocking flag passed to add_fd above is
- not respected, the code will deadlock (in a way that we have a chance of
- debugging) */
-#ifndef NDEBUG
- gpr_mu_lock(pollset->mu);
- gpr_mu_unlock(pollset->mu);
-#endif
-}
-
-static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset) {
- GPR_ASSERT(grpc_closure_list_empty(pollset->idle_jobs));
- pollset->vtable->finish_shutdown(pollset);
- grpc_exec_ctx_enqueue(exec_ctx, pollset->shutdown_done, true, NULL);
-}
-
-void grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
- grpc_pollset_worker **worker_hdl, gpr_timespec now,
- gpr_timespec deadline) {
- grpc_pollset_worker worker;
- *worker_hdl = &worker;
-
- /* pollset->mu already held */
- int added_worker = 0;
- int locked = 1;
- int queued_work = 0;
- int keep_polling = 0;
- GPR_TIMER_BEGIN("grpc_pollset_work", 0);
- /* this must happen before we (potentially) drop pollset->mu */
- worker.next = worker.prev = NULL;
- worker.reevaluate_polling_on_wakeup = 0;
- if (pollset->local_wakeup_cache != NULL) {
- worker.wakeup_fd = pollset->local_wakeup_cache;
- pollset->local_wakeup_cache = worker.wakeup_fd->next;
- } else {
- worker.wakeup_fd = gpr_malloc(sizeof(*worker.wakeup_fd));
- grpc_wakeup_fd_init(&worker.wakeup_fd->fd);
- }
- worker.kicked_specifically = 0;
- /* If there's work waiting for the pollset to be idle, and the
- pollset is idle, then do that work */
- if (!grpc_pollset_has_workers(pollset) &&
- !grpc_closure_list_empty(pollset->idle_jobs)) {
- GPR_TIMER_MARK("grpc_pollset_work.idle_jobs", 0);
- grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL);
- goto done;
- }
- /* If we're shutting down then we don't execute any extended work */
- if (pollset->shutting_down) {
- GPR_TIMER_MARK("grpc_pollset_work.shutting_down", 0);
- goto done;
- }
- /* Give do_promote priority so we don't starve it out */
- if (pollset->in_flight_cbs) {
- GPR_TIMER_MARK("grpc_pollset_work.in_flight_cbs", 0);
- gpr_mu_unlock(pollset->mu);
- locked = 0;
- goto done;
- }
- /* Start polling, and keep doing so while we're being asked to
- re-evaluate our pollers (this allows poll() based pollers to
- ensure they don't miss wakeups) */
- keep_polling = 1;
- while (keep_polling) {
- keep_polling = 0;
- if (!pollset->kicked_without_pollers) {
- if (!added_worker) {
- push_front_worker(pollset, &worker);
- added_worker = 1;
- gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker);
- }
- gpr_tls_set(&g_current_thread_poller, (intptr_t)pollset);
- GPR_TIMER_BEGIN("maybe_work_and_unlock", 0);
- pollset->vtable->maybe_work_and_unlock(exec_ctx, pollset, &worker,
- deadline, now);
- GPR_TIMER_END("maybe_work_and_unlock", 0);
- locked = 0;
- gpr_tls_set(&g_current_thread_poller, 0);
- } else {
- GPR_TIMER_MARK("grpc_pollset_work.kicked_without_pollers", 0);
- pollset->kicked_without_pollers = 0;
- }
- /* Finished execution - start cleaning up.
- Note that we may arrive here from outside the enclosing while() loop.
- In that case we won't loop though as we haven't added worker to the
- worker list, which means nobody could ask us to re-evaluate polling). */
- done:
- if (!locked) {
- queued_work |= grpc_exec_ctx_flush(exec_ctx);
- gpr_mu_lock(pollset->mu);
- locked = 1;
- }
- /* If we're forced to re-evaluate polling (via grpc_pollset_kick with
- GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) then we land here and force
- a loop */
- if (worker.reevaluate_polling_on_wakeup) {
- worker.reevaluate_polling_on_wakeup = 0;
- pollset->kicked_without_pollers = 0;
- if (queued_work || worker.kicked_specifically) {
- /* If there's queued work on the list, then set the deadline to be
- immediate so we get back out of the polling loop quickly */
- deadline = gpr_inf_past(GPR_CLOCK_MONOTONIC);
- }
- keep_polling = 1;
- }
- }
- if (added_worker) {
- remove_worker(pollset, &worker);
- gpr_tls_set(&g_current_thread_worker, 0);
- }
- /* release wakeup fd to the local pool */
- worker.wakeup_fd->next = pollset->local_wakeup_cache;
- pollset->local_wakeup_cache = worker.wakeup_fd;
- /* check shutdown conditions */
- if (pollset->shutting_down) {
- if (grpc_pollset_has_workers(pollset)) {
- grpc_pollset_kick(pollset, NULL);
- } else if (!pollset->called_shutdown && pollset->in_flight_cbs == 0) {
- pollset->called_shutdown = 1;
- gpr_mu_unlock(pollset->mu);
- finish_shutdown(exec_ctx, pollset);
- grpc_exec_ctx_flush(exec_ctx);
- /* Continuing to access pollset here is safe -- it is the caller's
- * responsibility to not destroy when it has outstanding calls to
- * grpc_pollset_work.
- * TODO(dklempner): Can we refactor the shutdown logic to avoid this? */
- gpr_mu_lock(pollset->mu);
- } else if (!grpc_closure_list_empty(pollset->idle_jobs)) {
- grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL);
- gpr_mu_unlock(pollset->mu);
- grpc_exec_ctx_flush(exec_ctx);
- gpr_mu_lock(pollset->mu);
- }
- }
- *worker_hdl = NULL;
- GPR_TIMER_END("grpc_pollset_work", 0);
-}
-
-void grpc_pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
- grpc_closure *closure) {
- GPR_ASSERT(!pollset->shutting_down);
- pollset->shutting_down = 1;
- pollset->shutdown_done = closure;
- grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
- if (!grpc_pollset_has_workers(pollset)) {
- grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL);
- }
- if (!pollset->called_shutdown && pollset->in_flight_cbs == 0 &&
- !grpc_pollset_has_workers(pollset)) {
- pollset->called_shutdown = 1;
- finish_shutdown(exec_ctx, pollset);
- }
-}
-
-int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline,
- gpr_timespec now) {
- gpr_timespec timeout;
- static const int64_t max_spin_polling_us = 10;
- if (gpr_time_cmp(deadline, gpr_inf_future(deadline.clock_type)) == 0) {
- return -1;
- }
- if (gpr_time_cmp(deadline, gpr_time_add(now, gpr_time_from_micros(
- max_spin_polling_us,
- GPR_TIMESPAN))) <= 0) {
- return 0;
- }
- timeout = gpr_time_sub(deadline, now);
- return gpr_time_to_millis(gpr_time_add(
- timeout, gpr_time_from_nanos(GPR_NS_PER_MS - 1, GPR_TIMESPAN)));
-}
-
-/*
- * basic_pollset - a vtable that provides polling for zero or one file
- * descriptor via poll()
- */
-
-typedef struct grpc_unary_promote_args {
- const grpc_pollset_vtable *original_vtable;
- grpc_pollset *pollset;
- grpc_fd *fd;
- grpc_closure promotion_closure;
-} grpc_unary_promote_args;
-
-static void basic_do_promote(grpc_exec_ctx *exec_ctx, void *args,
- bool success) {
- grpc_unary_promote_args *up_args = args;
- const grpc_pollset_vtable *original_vtable = up_args->original_vtable;
- grpc_pollset *pollset = up_args->pollset;
- grpc_fd *fd = up_args->fd;
-
- /*
- * This is quite tricky. There are a number of cases to keep in mind here:
- * 1. fd may have been orphaned
- * 2. The pollset may no longer be a unary poller (and we can't let case #1
- * leak to other pollset types!)
- * 3. pollset's fd (which may have changed) may have been orphaned
- * 4. The pollset may be shutting down.
- */
-
- gpr_mu_lock(pollset->mu);
- /* First we need to ensure that nobody is polling concurrently */
- GPR_ASSERT(!grpc_pollset_has_workers(pollset));
-
- gpr_free(up_args);
- /* At this point the pollset may no longer be a unary poller. In that case
- * we should just call the right add function and be done. */
- /* TODO(klempner): If we're not careful this could cause infinite recursion.
- * That's not a problem for now because empty_pollset has a trivial poller
- * and we don't have any mechanism to unbecome multipoller. */
- pollset->in_flight_cbs--;
- if (pollset->shutting_down) {
- /* We don't care about this pollset anymore. */
- if (pollset->in_flight_cbs == 0 && !pollset->called_shutdown) {
- pollset->called_shutdown = 1;
- finish_shutdown(exec_ctx, pollset);
- }
- } else if (grpc_fd_is_orphaned(fd)) {
- /* Don't try to add it to anything, we'll drop our ref on it below */
- } else if (pollset->vtable != original_vtable) {
- pollset->vtable->add_fd(exec_ctx, pollset, fd, 0);
- } else if (fd != pollset->data.ptr) {
- grpc_fd *fds[2];
- fds[0] = pollset->data.ptr;
- fds[1] = fd;
-
- if (fds[0] && !grpc_fd_is_orphaned(fds[0])) {
- grpc_platform_become_multipoller(exec_ctx, pollset, fds,
- GPR_ARRAY_SIZE(fds));
- GRPC_FD_UNREF(fds[0], "basicpoll");
- } else {
- /* old fd is orphaned and we haven't cleaned it up until now, so remain a
- * unary poller */
- /* Note that it is possible that fds[1] is also orphaned at this point.
- * That's okay, we'll correct it at the next add or poll. */
- if (fds[0]) GRPC_FD_UNREF(fds[0], "basicpoll");
- pollset->data.ptr = fd;
- GRPC_FD_REF(fd, "basicpoll");
- }
- }
-
- gpr_mu_unlock(pollset->mu);
-
- /* Matching ref in basic_pollset_add_fd */
- GRPC_FD_UNREF(fd, "basicpoll_add");
-}
-
-static void basic_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
- grpc_fd *fd, int and_unlock_pollset) {
- grpc_unary_promote_args *up_args;
- GPR_ASSERT(fd);
- if (fd == pollset->data.ptr) goto exit;
-
- if (!grpc_pollset_has_workers(pollset)) {
- /* Fast path -- no in flight cbs */
- /* TODO(klempner): Comment this out and fix any test failures or establish
- * they are due to timing issues */
- grpc_fd *fds[2];
- fds[0] = pollset->data.ptr;
- fds[1] = fd;
-
- if (fds[0] == NULL) {
- pollset->data.ptr = fd;
- GRPC_FD_REF(fd, "basicpoll");
- } else if (!grpc_fd_is_orphaned(fds[0])) {
- grpc_platform_become_multipoller(exec_ctx, pollset, fds,
- GPR_ARRAY_SIZE(fds));
- GRPC_FD_UNREF(fds[0], "basicpoll");
- } else {
- /* old fd is orphaned and we haven't cleaned it up until now, so remain a
- * unary poller */
- GRPC_FD_UNREF(fds[0], "basicpoll");
- pollset->data.ptr = fd;
- GRPC_FD_REF(fd, "basicpoll");
- }
- goto exit;
- }
-
- /* Now we need to promote. This needs to happen when we're not polling. Since
- * this may be called from poll, the wait needs to happen asynchronously. */
- GRPC_FD_REF(fd, "basicpoll_add");
- pollset->in_flight_cbs++;
- up_args = gpr_malloc(sizeof(*up_args));
- up_args->fd = fd;
- up_args->original_vtable = pollset->vtable;
- up_args->pollset = pollset;
- up_args->promotion_closure.cb = basic_do_promote;
- up_args->promotion_closure.cb_arg = up_args;
-
- grpc_closure_list_add(&pollset->idle_jobs, &up_args->promotion_closure, 1);
- grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
-
-exit:
- if (and_unlock_pollset) {
- gpr_mu_unlock(pollset->mu);
- }
-}
-
-static void basic_pollset_maybe_work_and_unlock(grpc_exec_ctx *exec_ctx,
- grpc_pollset *pollset,
- grpc_pollset_worker *worker,
- gpr_timespec deadline,
- gpr_timespec now) {
-#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR)
-#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR)
-
- struct pollfd pfd[3];
- grpc_fd *fd;
- grpc_fd_watcher fd_watcher;
- int timeout;
- int r;
- nfds_t nfds;
-
- fd = pollset->data.ptr;
- if (fd && grpc_fd_is_orphaned(fd)) {
- GRPC_FD_UNREF(fd, "basicpoll");
- fd = pollset->data.ptr = NULL;
- }
- timeout = grpc_poll_deadline_to_millis_timeout(deadline, now);
- pfd[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd);
- pfd[0].events = POLLIN;
- pfd[0].revents = 0;
- pfd[1].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd);
- pfd[1].events = POLLIN;
- pfd[1].revents = 0;
- nfds = 2;
- if (fd) {
- pfd[2].fd = fd->fd;
- pfd[2].revents = 0;
- GRPC_FD_REF(fd, "basicpoll_begin");
- gpr_mu_unlock(pollset->mu);
- pfd[2].events = (short)grpc_fd_begin_poll(fd, pollset, worker, POLLIN,
- POLLOUT, &fd_watcher);
- if (pfd[2].events != 0) {
- nfds++;
- }
- } else {
- gpr_mu_unlock(pollset->mu);
- }
-
- /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
- even going into the blocking annotation if possible */
- /* poll fd count (argument 2) is shortened by one if we have no events
- to poll on - such that it only includes the kicker */
- GPR_TIMER_BEGIN("poll", 0);
- GRPC_SCHEDULING_START_BLOCKING_REGION;
- r = grpc_poll_function(pfd, nfds, timeout);
- GRPC_SCHEDULING_END_BLOCKING_REGION;
- GPR_TIMER_END("poll", 0);
-
- if (r < 0) {
- if (errno != EINTR) {
- gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
- }
- if (fd) {
- grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0);
- }
- } else if (r == 0) {
- if (fd) {
- grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0);
- }
- } else {
- if (pfd[0].revents & POLLIN_CHECK) {
- grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
- }
- if (pfd[1].revents & POLLIN_CHECK) {
- grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd);
- }
- if (nfds > 2) {
- grpc_fd_end_poll(exec_ctx, &fd_watcher, pfd[2].revents & POLLIN_CHECK,
- pfd[2].revents & POLLOUT_CHECK);
- } else if (fd) {
- grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0);
- }
- }
-
- if (fd) {
- GRPC_FD_UNREF(fd, "basicpoll_begin");
- }
-}
-
-static void basic_pollset_destroy(grpc_pollset *pollset) {
- if (pollset->data.ptr != NULL) {
- GRPC_FD_UNREF(pollset->data.ptr, "basicpoll");
- pollset->data.ptr = NULL;
- }
-}
-
-static const grpc_pollset_vtable basic_pollset = {
- basic_pollset_add_fd, basic_pollset_maybe_work_and_unlock,
- basic_pollset_destroy, basic_pollset_destroy};
-
-static void become_basic_pollset(grpc_pollset *pollset, grpc_fd *fd_or_null) {
- pollset->vtable = &basic_pollset;
- pollset->data.ptr = fd_or_null;
- if (fd_or_null != NULL) {
- GRPC_FD_REF(fd_or_null, "basicpoll");
- }
-}
-
-#endif /* GPR_POSIX_POLLSET */
diff --git a/src/core/iomgr/pollset_posix.h b/src/core/iomgr/pollset_posix.h
deleted file mode 100644
index 3cb3a06c274ffff2306c5f36a9d3dec5883ad28c..0000000000000000000000000000000000000000
--- a/src/core/iomgr/pollset_posix.h
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- *
- * Copyright 2015-2016, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#ifndef GRPC_INTERNAL_CORE_IOMGR_POLLSET_POSIX_H
-#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_POSIX_H
-
-#if 0
-#include <poll.h>
-
-#include <grpc/support/sync.h>
-
-#include "src/core/iomgr/exec_ctx.h"
-#include "src/core/iomgr/iomgr.h"
-#include "src/core/iomgr/pollset.h"
-#include "src/core/iomgr/wakeup_fd_posix.h"
-
-typedef struct grpc_pollset_vtable grpc_pollset_vtable;
-
-/* forward declare only in this file to avoid leaking impl details via
- pollset.h; real users of grpc_fd should always include 'fd_posix.h' and not
- use the struct tag */
-struct grpc_fd;
-
-typedef struct grpc_cached_wakeup_fd {
- grpc_wakeup_fd fd;
- struct grpc_cached_wakeup_fd *next;
-} grpc_cached_wakeup_fd;
-
-struct grpc_pollset_worker {
- grpc_cached_wakeup_fd *wakeup_fd;
- int reevaluate_polling_on_wakeup;
- int kicked_specifically;
- struct grpc_pollset_worker *next;
- struct grpc_pollset_worker *prev;
-};
-
-struct grpc_pollset {
- /* pollsets under posix can mutate representation as fds are added and
- removed.
- For example, we may choose a poll() based implementation on linux for
- few fds, and an epoll() based implementation for many fds */
- const grpc_pollset_vtable *vtable;
- gpr_mu *mu;
- grpc_pollset_worker root_worker;
- int in_flight_cbs;
- int shutting_down;
- int called_shutdown;
- int kicked_without_pollers;
- grpc_closure *shutdown_done;
- grpc_closure_list idle_jobs;
- union {
- int fd;
- void *ptr;
- } data;
- /* Local cache of eventfds for workers */
- grpc_cached_wakeup_fd *local_wakeup_cache;
-};
-
-struct grpc_pollset_vtable {
- void (*add_fd)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
- struct grpc_fd *fd, int and_unlock_pollset);
- void (*maybe_work_and_unlock)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
- grpc_pollset_worker *worker,
- gpr_timespec deadline, gpr_timespec now);
- void (*finish_shutdown)(grpc_pollset *pollset);
- void (*destroy)(grpc_pollset *pollset);
-};
-
-/* Add an fd to a pollset */
-void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
- struct grpc_fd *fd);
-
-/* Returns the fd to listen on for kicks */
-int grpc_kick_read_fd(grpc_pollset *p);
-/* Call after polling has been kicked to leave the kicked state */
-void grpc_kick_drain(grpc_pollset *p);
-
-/* Convert a timespec to milliseconds:
- - very small or negative poll times are clamped to zero to do a
- non-blocking poll (which becomes spin polling)
- - other small values are rounded up to one millisecond
- - longer than a millisecond polls are rounded up to the next nearest
- millisecond to avoid spinning
- - infinite timeouts are converted to -1 */
-int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline,
- gpr_timespec now);
-
-/* Allow kick to wakeup the currently polling worker */
-#define GRPC_POLLSET_CAN_KICK_SELF 1
-/* Force the wakee to repoll when awoken */
-#define GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP 2
-/* As per grpc_pollset_kick, with an extended set of flags (defined above)
- -- mostly for fd_posix's use. */
-void grpc_pollset_kick_ext(grpc_pollset *p,
- grpc_pollset_worker *specific_worker,
- uint32_t flags);
-
-/* turn a pollset into a multipoller: platform specific */
-typedef void (*grpc_platform_become_multipoller_type)(grpc_exec_ctx *exec_ctx,
- grpc_pollset *pollset,
- struct grpc_fd **fds,
- size_t fd_count);
-extern grpc_platform_become_multipoller_type grpc_platform_become_multipoller;
-
-void grpc_poll_become_multipoller(grpc_exec_ctx *exec_ctx,
- grpc_pollset *pollset, struct grpc_fd **fds,
- size_t fd_count);
-
-/* Return 1 if the pollset has active threads in grpc_pollset_work (pollset must
- * be locked) */
-int grpc_pollset_has_workers(grpc_pollset *pollset);
-
-void grpc_remove_fd_from_all_epoll_sets(int fd);
-
-/* override to allow tests to hook poll() usage */
-typedef int (*grpc_poll_function_type)(struct pollfd *, nfds_t, int);
-extern grpc_poll_function_type grpc_poll_function;
-extern grpc_wakeup_fd grpc_global_wakeup_fd;
-#endif
-
-#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_POSIX_H */
diff --git a/src/core/iomgr/pollset_set_posix.h b/src/core/iomgr/pollset_set_posix.h
index 4c583b603b73bd67dec2c210622c16f7a3cdea1c..a8f78314ed226f331293cd9c4f38c7bb050f0de2 100644
--- a/src/core/iomgr/pollset_set_posix.h
+++ b/src/core/iomgr/pollset_set_posix.h
@@ -34,12 +34,8 @@
#ifndef GRPC_INTERNAL_CORE_IOMGR_POLLSET_SET_POSIX_H
#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_SET_POSIX_H
-<<<<<<< HEAD
#include <grpc/support/sync.h>
#include "src/core/iomgr/ev_posix.h"
-=======
-#include "src/core/iomgr/fd_posix.h"
->>>>>>> c605c62b30ca15c83a7c4e98386062c62de0d36d
typedef struct grpc_pollset_set {
gpr_mu mu;
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index d18aff0058e95ea37a30f9224523d8d76dae550d..40efb0f2970de9e6f98da3c717bc221641c6e60f 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -141,9 +141,6 @@ CORE_SOURCE_FILES = [
'src/core/iomgr/iomgr.c',
'src/core/iomgr/iomgr_posix.c',
'src/core/iomgr/iomgr_windows.c',
- 'src/core/iomgr/pollset_multipoller_with_epoll.c',
- 'src/core/iomgr/pollset_multipoller_with_poll_posix.c',
- 'src/core/iomgr/pollset_posix.c',
'src/core/iomgr/pollset_set_posix.c',
'src/core/iomgr/pollset_set_windows.c',
'src/core/iomgr/pollset_windows.c',
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index edd6d41aac8e2db156de38f692e4882ce623af71..a3e7d4925619b1503470e8e81a16e6d06c6ac59a 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -833,7 +833,6 @@ src/core/iomgr/iomgr.h \
src/core/iomgr/iomgr_internal.h \
src/core/iomgr/iomgr_posix.h \
src/core/iomgr/pollset.h \
-src/core/iomgr/pollset_posix.h \
src/core/iomgr/pollset_set.h \
src/core/iomgr/pollset_set_posix.h \
src/core/iomgr/pollset_set_windows.h \
@@ -972,9 +971,6 @@ src/core/iomgr/iocp_windows.c \
src/core/iomgr/iomgr.c \
src/core/iomgr/iomgr_posix.c \
src/core/iomgr/iomgr_windows.c \
-src/core/iomgr/pollset_multipoller_with_epoll.c \
-src/core/iomgr/pollset_multipoller_with_poll_posix.c \
-src/core/iomgr/pollset_posix.c \
src/core/iomgr/pollset_set_posix.c \
src/core/iomgr/pollset_set_windows.c \
src/core/iomgr/pollset_windows.c \
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 160d06ad6444dbac7fed41bb093022e3b08e1f24..64c2b68756c75015472a4eee8ba05145b49c190d 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -3030,7 +3030,6 @@
"src/core/iomgr/iomgr_internal.h",
"src/core/iomgr/iomgr_posix.h",
"src/core/iomgr/pollset.h",
- "src/core/iomgr/pollset_posix.h",
"src/core/iomgr/pollset_set.h",
"src/core/iomgr/pollset_set_posix.h",
"src/core/iomgr/pollset_set_windows.h",
@@ -3232,10 +3231,6 @@
"src/core/iomgr/iomgr_posix.h",
"src/core/iomgr/iomgr_windows.c",
"src/core/iomgr/pollset.h",
- "src/core/iomgr/pollset_multipoller_with_epoll.c",
- "src/core/iomgr/pollset_multipoller_with_poll_posix.c",
- "src/core/iomgr/pollset_posix.c",
- "src/core/iomgr/pollset_posix.h",
"src/core/iomgr/pollset_set.h",
"src/core/iomgr/pollset_set_posix.c",
"src/core/iomgr/pollset_set_posix.h",
@@ -3562,7 +3557,6 @@
"src/core/iomgr/iomgr_internal.h",
"src/core/iomgr/iomgr_posix.h",
"src/core/iomgr/pollset.h",
- "src/core/iomgr/pollset_posix.h",
"src/core/iomgr/pollset_set.h",
"src/core/iomgr/pollset_set_posix.h",
"src/core/iomgr/pollset_set_windows.h",
@@ -3748,10 +3742,6 @@
"src/core/iomgr/iomgr_posix.h",
"src/core/iomgr/iomgr_windows.c",
"src/core/iomgr/pollset.h",
- "src/core/iomgr/pollset_multipoller_with_epoll.c",
- "src/core/iomgr/pollset_multipoller_with_poll_posix.c",
- "src/core/iomgr/pollset_posix.c",
- "src/core/iomgr/pollset_posix.h",
"src/core/iomgr/pollset_set.h",
"src/core/iomgr/pollset_set_posix.c",
"src/core/iomgr/pollset_set_posix.h",
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj
index 2986005782d1866a866250a12b25f7f6a367ca86..90a2558570a8ec0f183d3aee72d39b4ad025eb71 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj
@@ -342,7 +342,6 @@
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\iomgr_internal.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\iomgr_posix.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset.h" />
- <ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_posix.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_set.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_posix.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_windows.h" />
@@ -551,12 +550,6 @@
</ClCompile>
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\iomgr_windows.c">
</ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_multipoller_with_epoll.c">
- </ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_multipoller_with_poll_posix.c">
- </ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_posix.c">
- </ClCompile>
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_posix.c">
</ClCompile>
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_windows.c">
diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
index 1805a21f85cfb94a7d81a085bcf2bdc51d5e56c8..69e22de0515884ddedc1bfe87dc05df96d8af88f 100644
--- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters
@@ -205,15 +205,6 @@
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\iomgr_windows.c">
<Filter>src\core\iomgr</Filter>
</ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_multipoller_with_epoll.c">
- <Filter>src\core\iomgr</Filter>
- </ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_multipoller_with_poll_posix.c">
- <Filter>src\core\iomgr</Filter>
- </ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_posix.c">
- <Filter>src\core\iomgr</Filter>
- </ClCompile>
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_posix.c">
<Filter>src\core\iomgr</Filter>
</ClCompile>
@@ -692,9 +683,6 @@
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset.h">
<Filter>src\core\iomgr</Filter>
</ClInclude>
- <ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_posix.h">
- <Filter>src\core\iomgr</Filter>
- </ClInclude>
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_set.h">
<Filter>src\core\iomgr</Filter>
</ClInclude>
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
index f754facc8d6960a5436ef848d514e4b9c655b970..6d1aa094a1f4ff1b5545646f0625382b3f63ee8a 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj
@@ -318,7 +318,6 @@
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\iomgr_internal.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\iomgr_posix.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset.h" />
- <ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_posix.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_set.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_posix.h" />
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_windows.h" />
@@ -487,12 +486,6 @@
</ClCompile>
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\iomgr_windows.c">
</ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_multipoller_with_epoll.c">
- </ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_multipoller_with_poll_posix.c">
- </ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_posix.c">
- </ClCompile>
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_posix.c">
</ClCompile>
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_windows.c">
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index 3a5c3fb6fb348d0bb40fc17cde57ef887b6c2f5e..c672405e0f9d39aa6131af524b65c3fa55bb2131 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -145,15 +145,6 @@
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\iomgr_windows.c">
<Filter>src\core\iomgr</Filter>
</ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_multipoller_with_epoll.c">
- <Filter>src\core\iomgr</Filter>
- </ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_multipoller_with_poll_posix.c">
- <Filter>src\core\iomgr</Filter>
- </ClCompile>
- <ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_posix.c">
- <Filter>src\core\iomgr</Filter>
- </ClCompile>
<ClCompile Include="$(SolutionDir)\..\src\core\iomgr\pollset_set_posix.c">
<Filter>src\core\iomgr</Filter>
</ClCompile>
@@ -587,9 +578,6 @@
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset.h">
<Filter>src\core\iomgr</Filter>
</ClInclude>
- <ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_posix.h">
- <Filter>src\core\iomgr</Filter>
- </ClInclude>
<ClInclude Include="$(SolutionDir)\..\src\core\iomgr\pollset_set.h">
<Filter>src\core\iomgr</Filter>
</ClInclude>