tsan: extend mmap test
Test size larger than clear_shadow_mmap_threshold,
which is handled differently.
Depends on D114348.
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D114366
GitOrigin-RevId: 764b35d89f57a9052d84898422a865dc2e08edca
diff --git a/test/tsan/ignored-interceptors-mmap.cpp b/test/tsan/ignored-interceptors-mmap.cpp
index 451fd1b..2b35627 100644
--- a/test/tsan/ignored-interceptors-mmap.cpp
+++ b/test/tsan/ignored-interceptors-mmap.cpp
@@ -1,6 +1,8 @@
// RUN: %clangxx_tsan -O0 %s -o %t
-// RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-RACE
-// RUN: %run %t ignore 2>&1 | FileCheck %s --check-prefix=CHECK-IGNORE
+// RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-RACE
+// Test size larger than clear_shadow_mmap_threshold, which is handled differently.
+// RUN: not %run %t - 262144 2>&1 | FileCheck %s --check-prefix=CHECK-RACE
+// RUN: %run %t ignore 2>&1 | FileCheck %s --check-prefix=CHECK-IGNORE
#include <sys/mman.h>
#include <string.h>
@@ -14,11 +16,10 @@
// respects ignore annotations.
std::atomic<int*> global_p;
-void mmap_ignored(bool ignore) {
- const size_t kSize = sysconf(_SC_PAGESIZE);
-
+void mmap_ignored(bool ignore, size_t size) {
if (ignore) AnnotateIgnoreWritesBegin(__FILE__, __LINE__);
- void *p = mmap(0, kSize, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
+ void *p =
+ mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
if (ignore) AnnotateIgnoreWritesEnd(__FILE__, __LINE__);
// Use relaxed to retain the race between the mmap call and the memory write
@@ -35,11 +36,12 @@
// Create race between allocating (mmap) and writing memory
int main(int argc, const char *argv[]) {
bool ignore = (argc > 1) && (strcmp(argv[1], "ignore") == 0);
+ size_t size = argc > 2 ? atoi(argv[2]) : sysconf(_SC_PAGESIZE);
barrier_init(&barrier, 2);
pthread_t t;
pthread_create(&t, 0, WriteToMemory, 0);
- mmap_ignored(ignore);
+ mmap_ignored(ignore, size);
pthread_join(t, 0);
assert(global_p[0] == 7);