add test in that sends a sigint to client while its making an rpc ona

child thread - segfaults on mac

src/ruby/end2end/killed_client_thread_client.rb

+#!/usr/bin/env ruby
+
+# Copyright 2015, 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.
+
+require_relative './end2end_common'
+
+def main
+  server_port = ''
+  OptionParser.new do |opts|
+    opts.on('--client_control_port=P', String) do
+      STDERR.puts 'client control port not used'
+    end
+    opts.on('--server_port=P', String) do |p|
+      server_port = p
+    end
+  end.parse!
+
+  thd = Thread.new do
+    stub = Echo::EchoServer::Stub.new("localhost:#{server_port}",
+                                      :this_channel_is_insecure)
+    stub.echo(Echo::EchoRequest.new(request: 'hello'))
+    raise 'the clients rpc in this test shouldnt complete. ' \
+      'expecting SIGINT to happen in the middle of the call'
+  end
+  thd.join
+end
+
+main

src/ruby/end2end/killed_client_thread_driver.rb

+#!/usr/bin/env ruby
+
+# Copyright 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.
+
+require_relative './end2end_common'
+
+class SleepingEchoServerImpl < Echo::EchoServer::Service
+  def initialize(call_started, call_started_mu, call_started_cv)
+    @call_started = call_started
+    @call_started_mu = call_started_mu
+    @call_started_cv = call_started_cv
+  end
+  def echo(echo_req, _)
+    @call_started_mu.synchronize do
+      @call_started.set_true
+      @call_started_cv.signal
+    end
+    sleep 1000
+    Echo::EchoReply.new(response: echo_req.request)
+  end
+end
+
+class SleepingServerRunner
+  def initialize(service_impl)
+    @service_impl = service_impl
+  end
+
+  def run
+    @srv = GRPC::RpcServer.new
+    port = @srv.add_http2_port('0.0.0.0:0', :this_port_is_insecure)
+    @srv.handle(@service_impl)
+
+    @thd = Thread.new do
+      @srv.run
+    end
+    @srv.wait_till_running
+    port
+  end
+
+  def stop
+    @srv.stop
+    @thd.join
+    fail 'server not stopped' unless @srv.stopped?
+  end
+end
+
+class BoolHolder
+  def init
+    @val = false
+  end
+  def set_true
+    @val = true
+  end
+  def get_val
+    @val
+  end
+end
+
+
+def main
+  STDERR.puts 'start server'
+
+  call_started = BoolHolder.new
+  call_started_mu = Mutex.new
+  call_started_cv = ConditionVariable.new
+
+  service_impl = SleepingEchoServerImpl.new(call_started, call_started_mu, call_started_cv)
+  server_runner = SleepingServerRunner.new(service_impl)
+  server_port = server_runner.run
+
+  STDERR.puts 'start client'
+  _, client_pid = start_client('killed_client_thread_client.rb',
+                                          server_port)
+
+  call_started_mu.synchronize do
+    while !call_started.get_val do
+      call_started_cv.wait(call_started_mu)
+    end
+  end
+
+  Process.kill('SIGINT', client_pid)
+  STDERR.puts 'sent shutdown'
+
+  begin
+    Timeout.timeout(10) do
+      Process.wait(client_pid)
+    end
+  rescue Timeout::Error
+    STDERR.puts "timeout wait for client pid #{client_pid}"
+    Process.kill('SIGKILL', client_pid)
+    Process.wait(client_pid)
+    STDERR.puts 'killed client child'
+    raise 'Timed out waiting for client process. It likely hangs when ' \
+      'killed while in the middle of an rpc'
+  end
+
+  client_exit_code = $CHILD_STATUS
+  if client_exit_code.termsig != 2 # SIGINT
+    fail "expected client exit from SIGINT but got child status: #{client_exit_code}"
+  end
+
+  server_runner.stop
+end
+
+main