[compiler-rt] r224532 - tsan: add an additional test for signal handlers

[Dmitry Vyukov]

Author: dvyukov
Date: Thu Dec 18 12:40:52 2014
New Revision: 224532

URL: http://llvm.org/viewvc/llvm-project?rev=224532&view=rev
Log:
tsan: add an additional test for signal handlers

the test passes now, but signal handling during thread creation
and shutdown is tricky


Added:
    compiler-rt/trunk/test/tsan/signal_thread.cc

Added: compiler-rt/trunk/test/tsan/signal_thread.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/tsan/signal_thread.cc?rev=224532&view=auto
==============================================================================
--- compiler-rt/trunk/test/tsan/signal_thread.cc (added)
+++ compiler-rt/trunk/test/tsan/signal_thread.cc Thu Dec 18 12:40:52 2014
@@ -0,0 +1,52 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <errno.h>
+
+volatile int X;
+
+static void handler(int sig) {
+  (void)sig;
+  if (X != 0)
+    printf("bad");
+}
+
+static void* thr(void *p) {
+  return 0;
+}
+
+int main() {
+  struct sigaction act = {};
+  act.sa_handler = &handler;
+  if (sigaction(SIGPROF, &act, 0)) {
+    perror("sigaction");
+    exit(1);
+  }
+
+  itimerval t;
+  t.it_value.tv_sec = 0;
+  t.it_value.tv_usec = 10;
+  t.it_interval = t.it_value;
+  if (setitimer(ITIMER_PROF, &t, 0)) {
+    perror("setitimer");
+    exit(1);
+  }
+
+  for (int i = 0; i < 10000; i++) {
+    pthread_t th;
+    pthread_create(&th, 0, thr, 0);
+    pthread_join(th, 0);
+  }
+
+  fprintf(stderr, "DONE\n");
+  return 0;
+}
+
+// CHECK-NOT: WARNING: ThreadSanitizer:
+// CHECK: DONE
+// CHECK-NOT: WARNING: ThreadSanitizer: