Fix SamplingProfiler name tracking on thread change

Summary: Original Author: [email protected] Original Git: 2facf5b Original Reviewed By: lavenzg Original Revision: D69692667 Record the name of the new thread when the sampling profiler is told that the runtime has changed threads. Reviewed By: neildhar Differential Revision: D69941438 fbshipit-source-id: 5fa9802fa51e8eb30a857ec8092d5313fa688b98
facebook · Feb 21, 2025 · 739f229 · 739f229
1 parent fd0d741
commit 739f229
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diff --git a/lib/VM/Profiler/SamplingProfilerPosix.cpp b/lib/VM/Profiler/SamplingProfilerPosix.cpp
@@ -485,6 +485,7 @@ void SamplingProfiler::setRuntimeThread() {
   std::lock_guard<std::mutex> lock(profiler->runtimeDataLock_);
   profiler->currentThread_ = pthread_self();
   threadID_ = oscompat::global_thread_id();
+  threadNames_[threadID_] = oscompat::thread_name();
 }
 
 } // namespace vm

diff --git a/lib/VM/Profiler/SamplingProfilerWindows.cpp b/lib/VM/Profiler/SamplingProfilerWindows.cpp
@@ -223,6 +223,7 @@ void SamplingProfiler::setRuntimeThread() {
   CloseHandle(profiler->currentThread_);
   profiler->currentThread_ = openCurrentThread();
   threadID_ = oscompat::global_thread_id();
+  threadNames_[threadID_] = oscompat::thread_name();
 }
 
 } // namespace vm