[PATCH] D104977: [perf] Fix a data race in the PerfJITEventListener

[Eugene Zhulenev via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGe88ac7295fa2: [perf] Fix a data race in the PerfJITEventListener (authored by ezhulenev).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D104977/new/

https://reviews.llvm.org/D104977

Files:
  llvm/lib/ExecutionEngine/PerfJITEvents/PerfJITEventListener.cpp


Index: llvm/lib/ExecutionEngine/PerfJITEvents/PerfJITEventListener.cpp
===================================================================
--- llvm/lib/ExecutionEngine/PerfJITEvents/PerfJITEventListener.cpp
+++ llvm/lib/ExecutionEngine/PerfJITEvents/PerfJITEventListener.cpp
@@ -284,6 +284,9 @@
     NotifyCode(Name, *AddrOrErr, Size);
   }
 
+  // avoid races with writes
+  std::lock_guard<sys::Mutex> Guard(Mutex);
+
   Dumpstream->flush();
 }
 


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