[tsan] Properly describe GCD worker threads in reports

When dealing with GCD worker threads, TSan currently prints weird things like "created by thread T-1" and "[failed to restore the stack]" in reports. This patch avoids that and instead prints "Thread T3 (...) is a GCD worker thread".

Differential Revision: https://reviews.llvm.org/D29103



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@293882 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/sanitizer_common/sanitizer_thread_registry.h b/lib/sanitizer_common/sanitizer_thread_registry.h
index a27bbb376..17b1d5d90 100644
--- a/lib/sanitizer_common/sanitizer_thread_registry.h
+++ b/lib/sanitizer_common/sanitizer_thread_registry.h
@@ -45,6 +45,7 @@ class ThreadContextBase {
 
   ThreadStatus status;
   bool detached;
+  bool workerthread;
 
   u32 parent_tid;
   ThreadContextBase *next;  // For storing thread contexts in a list.
@@ -54,7 +55,7 @@ class ThreadContextBase {
   void SetDead();
   void SetJoined(void *arg);
   void SetFinished();
-  void SetStarted(uptr _os_id, void *arg);
+  void SetStarted(uptr _os_id, bool _workerthread, void *arg);
   void SetCreated(uptr _user_id, u64 _unique_id, bool _detached,
                   u32 _parent_tid, void *arg);
   void Reset();
@@ -115,7 +116,7 @@ class ThreadRegistry {
   void DetachThread(u32 tid, void *arg);
   void JoinThread(u32 tid, void *arg);
   void FinishThread(u32 tid);
-  void StartThread(u32 tid, uptr os_id, void *arg);
+  void StartThread(u32 tid, uptr os_id, bool workerthread, void *arg);
 
  private:
   const ThreadContextFactory context_factory_;