From 7ca2692405f255ce4a87d2c3ec263d938cf274fc Mon Sep 17 00:00:00 2001
From: Brian Robbins <brianrob@microsoft.com>
Date: Thu, 25 May 2017 12:28:24 -0700
Subject: Implement Activity ID / Related Activity ID for EventSources Writing
 to EventPipe (#11904)

* Implement thread-local storage of activity ids.

* Plumb the activity id and related activity id into the trace file.
---
 src/vm/eventpipe.cpp | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

(limited to 'src/vm/eventpipe.cpp')

diff --git a/src/vm/eventpipe.cpp b/src/vm/eventpipe.cpp
index b73c023b64..4eae6a87c6 100644
--- a/src/vm/eventpipe.cpp
+++ b/src/vm/eventpipe.cpp
@@ -282,7 +282,7 @@ void EventPipe::DeleteProvider(EventPipeProvider *pProvider)
     }
 }
 
-void EventPipe::WriteEvent(EventPipeEvent &event, BYTE *pData, unsigned int length)
+void EventPipe::WriteEvent(EventPipeEvent &event, BYTE *pData, unsigned int length, LPCGUID pActivityId, LPCGUID pRelatedActivityId)
 {
     CONTRACTL
     {
@@ -309,7 +309,7 @@ void EventPipe::WriteEvent(EventPipeEvent &event, BYTE *pData, unsigned int leng
 
     if(!s_pConfig->RundownEnabled() && s_pBufferManager != NULL)
     {
-        if(!s_pBufferManager->WriteEvent(pThread, event, pData, length))
+        if(!s_pBufferManager->WriteEvent(pThread, event, pData, length, pActivityId, pRelatedActivityId))
         {
             // This is used in DEBUG to make sure that we don't log an event synchronously that we didn't log to the buffer.
             return;
@@ -323,7 +323,9 @@ void EventPipe::WriteEvent(EventPipeEvent &event, BYTE *pData, unsigned int leng
             event,
             pThread->GetOSThreadId(),
             pData,
-            length);
+            length,
+            pActivityId,
+            pRelatedActivityId);
 
         if(s_pFile != NULL)
         {
@@ -340,7 +342,9 @@ void EventPipe::WriteEvent(EventPipeEvent &event, BYTE *pData, unsigned int leng
             event,
             pThread->GetOSThreadId(),
             pData,
-            length);
+            length,
+            pActivityId,
+            pRelatedActivityId);
 
         // Write to the EventPipeFile if it exists.
         if(s_pSyncFile != NULL)
@@ -372,7 +376,7 @@ void EventPipe::WriteSampleProfileEvent(Thread *pSamplingThread, EventPipeEvent
     {
         // Specify the sampling thread as the "current thread", so that we select the right buffer.
         // Specify the target thread so that the event gets properly attributed.
-        if(!s_pBufferManager->WriteEvent(pSamplingThread, *pEvent, pData, length, pTargetThread, &stackContents))
+        if(!s_pBufferManager->WriteEvent(pSamplingThread, *pEvent, pData, length, NULL /* pActivityId */, NULL /* pRelatedActivityId */, pTargetThread, &stackContents))
         {
             // This is used in DEBUG to make sure that we don't log an event synchronously that we didn't log to the buffer.
             return;
@@ -577,14 +581,16 @@ void QCALLTYPE EventPipeInternal::WriteEvent(
     INT_PTR eventHandle,
     unsigned int eventID,
     void *pData,
-    unsigned int length)
+    unsigned int length,
+    LPCGUID pActivityId,
+    LPCGUID pRelatedActivityId)
 {
     QCALL_CONTRACT;
     BEGIN_QCALL;
 
     _ASSERTE(eventHandle != NULL);
     EventPipeEvent *pEvent = reinterpret_cast<EventPipeEvent *>(eventHandle);
-    EventPipe::WriteEvent(*pEvent, (BYTE *)pData, length);
+    EventPipe::WriteEvent(*pEvent, (BYTE *)pData, length, pActivityId, pRelatedActivityId);
 
     END_QCALL;
 }
-- 
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