[compiler-rt] f6fd7b2 - [NFC][lsan] Add SuspendAllThreads traces

[Vitaly Buka via llvm-commits]

Author: Vitaly Buka
Date: 2024-10-04T22:53:37-07:00
New Revision: f6fd7b24c5955ce772f1afa4314a2d3434c458d5

URL: https://github.com/llvm/llvm-project/commit/f6fd7b24c5955ce772f1afa4314a2d3434c458d5
DIFF: https://github.com/llvm/llvm-project/commit/f6fd7b24c5955ce772f1afa4314a2d3434c458d5.diff

LOG: [NFC][lsan] Add SuspendAllThreads traces

Added: 
    

Modified: 
    compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp

Removed: 
    


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diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
index 526a71c398260d..73ba884052a3a3 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
@@ -217,6 +217,7 @@ bool ThreadSuspender::SuspendAllThreads() {
     switch (thread_lister.ListThreads(&threads)) {
       case ThreadLister::Error:
         ResumeAllThreads();
+        Report("Failed to list threads\n");
         return false;
       case ThreadLister::Incomplete:
         retry = true;
@@ -228,6 +229,8 @@ bool ThreadSuspender::SuspendAllThreads() {
       if (SuspendThread(tid))
         retry = true;
     }
+    if (retry)
+      VReport(1, "SuspendAllThreads retry: %d\n", i);
   }
   return suspended_threads_list_.ThreadCount();
 }