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-rw-r--r--test/tsan/mmap_stress.cc47
1 files changed, 47 insertions, 0 deletions
diff --git a/test/tsan/mmap_stress.cc b/test/tsan/mmap_stress.cc
new file mode 100644
index 000000000000..5e3904adf90b
--- /dev/null
+++ b/test/tsan/mmap_stress.cc
@@ -0,0 +1,47 @@
+// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+#include "test.h"
+#include <errno.h>
+#include <sys/mman.h>
+
+void *SubWorker(void *arg) {
+ (void)arg;
+ const int kMmapSize = 65536;
+ for (int i = 0; i < 500; i++) {
+ int *ptr = (int*)mmap(0, kMmapSize, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANON, -1, 0);
+ *ptr = 42;
+ munmap(ptr, kMmapSize);
+ }
+ return 0;
+}
+
+void *Worker1(void *arg) {
+ (void)arg;
+ pthread_t th[4];
+ for (int i = 0; i < 4; i++)
+ pthread_create(&th[i], 0, SubWorker, 0);
+ for (int i = 0; i < 4; i++)
+ pthread_join(th[i], 0);
+ return 0;
+}
+
+void *Worker(void *arg) {
+ (void)arg;
+ pthread_t th[4];
+ for (int i = 0; i < 4; i++)
+ pthread_create(&th[i], 0, Worker1, 0);
+ for (int i = 0; i < 4; i++)
+ pthread_join(th[i], 0);
+ return 0;
+}
+
+int main() {
+ pthread_t th[4];
+ for (int i = 0; i < 4; i++)
+ pthread_create(&th[i], 0, Worker, 0);
+ for (int i = 0; i < 4; i++)
+ pthread_join(th[i], 0);
+ fprintf(stderr, "DONE\n");
+}
+
+// CHECK: DONE