[Tsan] Make the mutex_robust tests Linux-specific

[kutuzov.viktor.84]

Summary

There are no robust mutexes on FreeBSD.

[emaste]

LGTM

Improving support for process-shared (and later robust) mutexes is on the roadmap so we'll eventually move this back.

[samsonov]

LGTM

Closed by commit rL219790 (authored by vkutuzov).

test/tsan/Linux/mutex_robust.cc

+// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+pthread_mutex_t m;
+
+void *thr(void *p) {
+  pthread_mutex_lock(&m);
+  return 0;
+}
+
+int main() {
+  pthread_mutexattr_t a;
+  pthread_mutexattr_init(&a);
+  pthread_mutexattr_setrobust(&a, PTHREAD_MUTEX_ROBUST);
+  pthread_mutex_init(&m, &a);
+  pthread_t th;
+  pthread_create(&th, 0, thr, 0);
+  sleep(1);
+  if (pthread_mutex_lock(&m) != EOWNERDEAD) {
+    fprintf(stderr, "not EOWNERDEAD\n");
+    exit(1);
+  }
+  pthread_join(th, 0);
+  fprintf(stderr, "DONE\n");
+}
+
+// This is a correct code, and tsan must not bark.
+// CHECK-NOT: WARNING: ThreadSanitizer
+// CHECK-NOT: EOWNERDEAD
+// CHECK: DONE
+// CHECK-NOT: WARNING: ThreadSanitizer
+

test/tsan/Linux/mutex_robust2.cc

+// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
+#include <pthread.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+pthread_mutex_t m;
+int x;
+
+void *thr(void *p) {
+  pthread_mutex_lock(&m);
+  x = 42;
+  return 0;
+}
+
+int main() {
+  pthread_mutexattr_t a;
+  pthread_mutexattr_init(&a);
+  pthread_mutexattr_setrobust(&a, PTHREAD_MUTEX_ROBUST);
+  pthread_mutex_init(&m, &a);
+  pthread_t th;
+  pthread_create(&th, 0, thr, 0);
+  sleep(1);
+  if (pthread_mutex_trylock(&m) != EOWNERDEAD) {
+    fprintf(stderr, "not EOWNERDEAD\n");
+    exit(1);
+  }
+  x = 43;
+  pthread_join(th, 0);
+  fprintf(stderr, "DONE\n");
+}
+
+// This is a false positive, tsan must not bark at the data race.
+// But currently it does.
+// CHECK-NOT: WARNING: ThreadSanitizer WARNING: double lock of mutex
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK-NOT: EOWNERDEAD
+// CHECK: DONE
+// CHECK-NOT: WARNING: ThreadSanitizer
+

test/tsan/mutex_robust.cc

-// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
-#include <pthread.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <errno.h>
-
-pthread_mutex_t m;
-
-void *thr(void *p) {
-  pthread_mutex_lock(&m);
-  return 0;
-}
-
-int main() {
-  pthread_mutexattr_t a;
-  pthread_mutexattr_init(&a);
-  pthread_mutexattr_setrobust(&a, PTHREAD_MUTEX_ROBUST);
-  pthread_mutex_init(&m, &a);
-  pthread_t th;
-  pthread_create(&th, 0, thr, 0);
-  sleep(1);
-  if (pthread_mutex_lock(&m) != EOWNERDEAD) {
-    fprintf(stderr, "not EOWNERDEAD\n");
-    exit(1);
-  }
-  pthread_join(th, 0);
-  fprintf(stderr, "DONE\n");
-}
-
-// This is a correct code, and tsan must not bark.
-// CHECK-NOT: WARNING: ThreadSanitizer
-// CHECK-NOT: EOWNERDEAD
-// CHECK: DONE
-// CHECK-NOT: WARNING: ThreadSanitizer
-

test/tsan/mutex_robust2.cc

-// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
-#include <pthread.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <errno.h>
-
-pthread_mutex_t m;
-int x;
-
-void *thr(void *p) {
-  pthread_mutex_lock(&m);
-  x = 42;
-  return 0;
-}
-
-int main() {
-  pthread_mutexattr_t a;
-  pthread_mutexattr_init(&a);
-  pthread_mutexattr_setrobust(&a, PTHREAD_MUTEX_ROBUST);
-  pthread_mutex_init(&m, &a);
-  pthread_t th;
-  pthread_create(&th, 0, thr, 0);
-  sleep(1);
-  if (pthread_mutex_trylock(&m) != EOWNERDEAD) {
-    fprintf(stderr, "not EOWNERDEAD\n");
-    exit(1);
-  }
-  x = 43;
-  pthread_join(th, 0);
-  fprintf(stderr, "DONE\n");
-}
-
-// This is a false positive, tsan must not bark at the data race.
-// But currently it does.
-// CHECK-NOT: WARNING: ThreadSanitizer WARNING: double lock of mutex
-// CHECK: WARNING: ThreadSanitizer: data race
-// CHECK-NOT: EOWNERDEAD
-// CHECK: DONE
-// CHECK-NOT: WARNING: ThreadSanitizer
-