[NFC][lsan] Add SuspendAllThreads traces

vitalybuka · vitalybuka · commit f6fd7b24c595 · 2024-10-04T22:53:37.000-07:00
diff --git 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();
 }

Original file line number	Diff line number	Diff line change
`@@ -217,6 +217,7 @@ bool ThreadSuspender::SuspendAllThreads() {`
`217`	`217`	`switch (thread_lister.ListThreads(&threads)) {`
`218`	`218`	`case ThreadLister::Error:`
`219`	`219`	`ResumeAllThreads();`
	`220`	`+ Report("Failed to list threads\n");`
`220`	`221`	`return false;`
`221`	`222`	`case ThreadLister::Incomplete:`
`222`	`223`	`retry = true;`
`@@ -228,6 +229,8 @@ bool ThreadSuspender::SuspendAllThreads() {`
`228`	`229`	`if (SuspendThread(tid))`
`229`	`230`	`retry = true;`
`230`	`231`	`}`
	`232`	`+ if (retry)`
	`233`	`+ VReport(1, "SuspendAllThreads retry: %d\n", i);`
`231`	`234`	`}`
`232`	`235`	`return suspended_threads_list_.ThreadCount();`
`233`	`236`	`}`