Change Native AOT ThreadBuffer.m_threadId to OS thread id (#96075)

* Change Native AOT ThreadBuffer.m_threadId to OS thread id. * Remove the unused IsCurrentThread() * Code review feedback
dotnet · Dec 16, 2023 · 41b32f8 · 41b32f8
1 parent 5d2c901
commit 41b32f8
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Showing 3 changed files with 3 additions and 16 deletions.
diff --git a/src/coreclr/gc/env/gcenv.structs.h b/src/coreclr/gc/env/gcenv.structs.h
@@ -15,15 +15,8 @@ struct GCSystemInfo
 
 typedef void * HANDLE;
 
-// Across all platforms, NativeAOT Thread::GetPalThreadIdForLogging assumes that the thread
-// ID is stored in the first 8 bytes of this structure.
-
 #ifdef TARGET_UNIX
 
-#ifdef FEATURE_NATIVEAOT
-static_assert(sizeof(pthread_t) == sizeof(uint64_t), "EEThreadId layout mismatch");
-#endif
-
 class EEThreadId
 {
     pthread_t m_id;

diff --git a/src/coreclr/nativeaot/Runtime/thread.cpp b/src/coreclr/nativeaot/Runtime/thread.cpp
@@ -277,7 +277,7 @@ void Thread::Construct()
     m_pDeferredTransitionFrame = TOP_OF_STACK_MARKER;
     m_hPalThread = INVALID_HANDLE_VALUE;
 
-    m_threadId.SetToCurrentThread();
+    m_threadId = PalGetCurrentOSThreadId();
 
     HANDLE curProcessPseudo = PalGetCurrentProcess();
     HANDLE curThreadPseudo  = PalGetCurrentThread();
@@ -342,12 +342,7 @@ bool Thread::CatchAtSafePoint()
 
 uint64_t Thread::GetPalThreadIdForLogging()
 {
-    return *(uint64_t*)&m_threadId;
-}
-
-bool Thread::IsCurrentThread()
-{
-    return m_threadId.IsCurrentThread();
+    return m_threadId;
 }
 
 uint64_t Thread::s_DeadThreadsNonAllocBytes = 0;

diff --git a/src/coreclr/nativeaot/Runtime/thread.h b/src/coreclr/nativeaot/Runtime/thread.h
@@ -102,7 +102,7 @@ struct ThreadBuffer
     GCFrameRegistration*    m_pGCFrameRegistrations;
     PTR_VOID                m_pStackLow;
     PTR_VOID                m_pStackHigh;
-    EEThreadId              m_threadId;                             // OS thread ID
+    uint64_t                m_threadId;                             // OS thread ID
     PTR_VOID                m_pThreadStressLog;                     // pointer to head of thread's StressLogChunks
     NATIVE_CONTEXT*         m_interruptedContext;                   // context for an asynchronously interrupted thread.
 #ifdef FEATURE_SUSPEND_REDIRECTION
@@ -215,7 +215,6 @@ class Thread : private ThreadBuffer
     gc_alloc_context *  GetAllocContext();
 
     uint64_t            GetPalThreadIdForLogging();
-    bool                IsCurrentThread();
 
     void                GcScanRoots(ScanFunc* pfnEnumCallback, ScanContext * pvCallbackData);