tsan: better reporting of thread leaks

1. do not report running threads as leaks
2. aggregate leaked threads by creation stack

llvm-svn: 177647

3 files changed, 37 insertions, 0 deletions

diff --git a/compiler-rt/lib/tsan/lit_tests/thread_leak3.c b/compiler-rt/lib/tsan/lit_tests/thread_leak3.c
index a39c93c5a5f..3577164cad4 100644
--- a/compiler-rt/lib/tsan/lit_tests/thread_leak3.c
+++ b/compiler-rt/lib/tsan/lit_tests/thread_leak3.c
@@ -1,5 +1,6 @@
 // RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
 #include <pthread.h>
+#include <unistd.h>
 
 void *Thread(void *x) {
   return 0;
@@ -8,6 +9,7 @@ void *Thread(void *x) {
 int main() {
   pthread_t t;
   pthread_create(&t, 0, Thread, 0);
+  sleep(1);
   return 0;
 }
 
diff --git a/compiler-rt/lib/tsan/lit_tests/thread_leak4.c b/compiler-rt/lib/tsan/lit_tests/thread_leak4.c
new file mode 100644
index 00000000000..3909c0a8d4a
--- /dev/null
+++ b/compiler-rt/lib/tsan/lit_tests/thread_leak4.c
@@ -0,0 +1,16 @@
+// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <unistd.h>
+
+void *Thread(void *x) {
+  sleep(10);
+  return 0;
+}
+
+int main() {
+  pthread_t t;
+  pthread_create(&t, 0, Thread, 0);
+  return 0;
+}
+
+// CHECK-NOT: WARNING: ThreadSanitizer: thread leak
diff --git a/compiler-rt/lib/tsan/lit_tests/thread_leak5.c b/compiler-rt/lib/tsan/lit_tests/thread_leak5.c
new file mode 100644
index 00000000000..fc72b149ec2
--- /dev/null
+++ b/compiler-rt/lib/tsan/lit_tests/thread_leak5.c
@@ -0,0 +1,19 @@
+// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <unistd.h>
+
+void *Thread(void *x) {
+  return 0;
+}
+
+int main() {
+  for (int i = 0; i < 5; i++) {
+    pthread_t t;
+    pthread_create(&t, 0, Thread, 0);
+  }
+  sleep(1);
+  return 0;
+}
+
+// CHECK: WARNING: ThreadSanitizer: thread leak
+// CHECK:   And 4 more similar thread leaks