Expose OSThreadId and TimeStamp on EventWrittenEventArgs (#19002)

* Add EventWrittenEventArgs public properties OSThreadId and TimeStamp and plumb through OSThreadId.

* Plumb ActivityId and RelatedActivityId to EventListener.

2 files changed, 31 insertions, 0 deletions

diff --git a/src/pal/inc/pal.h b/src/pal/inc/pal.h
index 98d0ae2f11..993d76ed9e 100644
--- a/src/pal/inc/pal.h
+++ b/src/pal/inc/pal.h
@@ -1267,6 +1267,12 @@ PALAPI
 GetCurrentThreadId(
            VOID);
 
+PALIMPORT
+size_t
+PALAPI
+PAL_GetCurrentOSThreadId(
+           VOID);
+
 // To work around multiply-defined symbols in the Carbon framework.
 #define GetCurrentThread PAL_GetCurrentThread
 PALIMPORT
diff --git a/src/pal/src/thread/thread.cpp b/src/pal/src/thread/thread.cpp
index bc06d2f7d4..66311edb03 100644
--- a/src/pal/src/thread/thread.cpp
+++ b/src/pal/src/thread/thread.cpp
@@ -399,6 +399,31 @@ GetCurrentThreadId(
     return dwThreadId;
 }
 
+/*++
+Function:
+  PAL_GetCurrentOSThreadId
+
+Returns the current thread's OS thread ID.
+This API is functionally equivalent to GetCurrentThreadId, but does not truncate the return value to 32-bits.
+This is needed to ensure that we can provide the correct OS thread ID on platforms such as OSX that have a 64-bit thread ID.
+--*/
+size_t
+PALAPI
+PAL_GetCurrentOSThreadId(
+            VOID)
+{
+    size_t threadId;
+
+    PERF_ENTRY(PAL_GetCurrentOSThreadId);
+    ENTRY("PAL_GetCurrentOSThreadId()\n");
+
+    threadId = THREADSilentGetCurrentThreadId();
+    
+    LOGEXIT("PAL_GetCurrentOSThreadId returns %p\n", threadId);    
+    PERF_EXIT(GetCurrentThreadId);
+    
+    return threadId;
+}
 
 
 /*++