Fix SamplingProfiler name tracking on thread change

Summary: Record the name of the new thread when the sampling profiler is told that the runtime has changed threads. Reviewed By: lavenzg Differential Revision: D69692667 fbshipit-source-id: ba972bab97a39a8489c24bb0d670438f763d81e9
facebook · Feb 19, 2025 · 2facf5b · 2facf5b
1 parent 716f148
commit 2facf5b
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diff --git a/lib/VM/Profiler/SamplingProfilerPosix.cpp b/lib/VM/Profiler/SamplingProfilerPosix.cpp
@@ -482,6 +482,7 @@ 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