version 1

BUILD

@@ -383,6 +383,7 @@ cc_library(
     "src/core/census/context.c",
     "src/core/census/initialize.c",
     "src/core/census/record_stat.c",
+    "src/core/census/tracing.c",
   ],
   hdrs = [
     "include/grpc/grpc_security.h",
@@ -618,6 +619,7 @@ cc_library(
     "src/core/census/context.c",
     "src/core/census/initialize.c",
     "src/core/census/record_stat.c",
+    "src/core/census/tracing.c",
   ],
   hdrs = [
     "include/grpc/byte_buffer.h",
@@ -1101,6 +1103,7 @@ objc_library(
     "src/core/census/context.c",
     "src/core/census/initialize.c",
     "src/core/census/record_stat.c",
+    "src/core/census/tracing.c",
   ],
   hdrs = [
     "include/grpc/grpc_security.h",

Makefile

@@ -3615,6 +3615,7 @@ LIBGRPC_SRC = \
     src/core/census/context.c \
     src/core/census/initialize.c \
     src/core/census/record_stat.c \
+    src/core/census/tracing.c \
 PUBLIC_HEADERS_C += \
     include/grpc/grpc_security.h \
@@ -3880,6 +3881,7 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/census/context.c \
     src/core/census/initialize.c \
     src/core/census/record_stat.c \
+    src/core/census/tracing.c \
 PUBLIC_HEADERS_C += \
     include/grpc/byte_buffer.h \

build.json

@@ -24,7 +24,8 @@
       "src": [
         "src/core/census/context.c",
         "src/core/census/initialize.c",
-        "src/core/census/record_stat.c"
+        "src/core/census/record_stat.c",
+        "src/core/census/tracing.c"
       ]
     },
     {

gRPC.podspec

@@ -391,7 +391,8 @@ Pod::Spec.new do |s|
                       'src/core/transport/transport_op_string.c',
                       'src/core/census/context.c',
                       'src/core/census/initialize.c',
-                      'src/core/census/record_stat.c'
+                      'src/core/census/record_stat.c',
+                      'src/core/census/tracing.c'
 
     ss.private_header_files = 'src/core/support/env.h',
                               'src/core/support/file.h',

include/grpc/census.h

@@ -103,8 +103,8 @@ void census_context_destroy(census_context *context);
 
 /* Distributed traces can have a number of options. */
 enum census_trace_mask_values {
-  CENSUS_TRACE_MASK_NONE = 0,       /* Default, empty flags */
-  CENSUS_TRACE_MASK_IS_SAMPLED = 1, /* RPC tracing enabled for this context. */
+  CENSUS_TRACE_MASK_NONE = 0,      /* Default, empty flags */
+  CENSUS_TRACE_MASK_IS_SAMPLED = 1 /* RPC tracing enabled for this context. */
 };
 
 /** Get the current trace mask associated with this context. The value returned

tools/doxygen/Doxyfile.core.internal

@@ -1018,6 +1018,7 @@ src/core/transport/transport_op_string.c \
 src/core/census/context.c \
 src/core/census/initialize.c \
 src/core/census/record_stat.c \
+src/core/census/tracing.c \
 include/grpc/support/alloc.h \
 include/grpc/support/atm.h \
 include/grpc/support/atm_gcc_atomic.h \

tools/run_tests/sources_and_headers.json

@@ -9995,6 +9995,7 @@
       "src/core/census/initialize.c", 
       "src/core/census/record_stat.c", 
       "src/core/census/rpc_stat_id.h", 
+      "src/core/census/tracing.c", 
       "src/core/channel/census_filter.h", 
       "src/core/channel/channel_args.c", 
       "src/core/channel/channel_args.h", 
@@ -10442,6 +10443,7 @@
       "src/core/census/initialize.c", 
       "src/core/census/record_stat.c", 
       "src/core/census/rpc_stat_id.h", 
+      "src/core/census/tracing.c", 
       "src/core/channel/census_filter.h", 
       "src/core/channel/channel_args.c", 
       "src/core/channel/channel_args.h", 

vsprojects/grpc/grpc.vcxproj

@@ -545,6 +545,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\core\census\record_stat.c">
     </ClCompile>
+    <ClCompile Include="..\..\src\core\census\tracing.c">
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\gpr\gpr.vcxproj">

vsprojects/grpc/grpc.vcxproj.filters

@@ -409,6 +409,9 @@
     <ClCompile Include="..\..\src\core\census\record_stat.c">
       <Filter>src\core\census</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\core\census\tracing.c">
+      <Filter>src\core\census</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\include\grpc\grpc_security.h">

vsprojects/grpc_unsecure/grpc_unsecure.vcxproj

@@ -480,6 +480,8 @@
     </ClCompile>
     <ClCompile Include="..\..\src\core\census\record_stat.c">
     </ClCompile>
+    <ClCompile Include="..\..\src\core\census\tracing.c">
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\gpr\gpr.vcxproj">

vsprojects/grpc_unsecure/grpc_unsecure.vcxproj.filters

@@ -340,6 +340,9 @@
     <ClCompile Include="..\..\src\core\census\record_stat.c">
       <Filter>src\core\census</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\core\census\tracing.c">
+      <Filter>src\core\census</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\include\grpc\byte_buffer.h">