3ab6b2347e
Even sleep(1) lead to episodical flakes on some machines. Use an invisible by tsan barrier to enforce required execution order instead. This makes the tests deterministic and faster. llvm-svn: 226659
41 lines
998 B
C++
41 lines
998 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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#include "test.h"
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int Global;
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__thread int huge[1024*1024];
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void *Thread1(void *x) {
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barrier_wait(&barrier);
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Global++;
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return NULL;
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}
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void *Thread2(void *x) {
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pthread_mutex_t *mtx = new pthread_mutex_t;
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pthread_mutex_init(mtx, 0);
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pthread_mutex_lock(mtx);
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Global--;
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pthread_mutex_unlock(mtx);
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pthread_mutex_destroy(mtx);
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delete mtx;
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barrier_wait(&barrier);
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return NULL;
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}
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int main() {
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barrier_init(&barrier, 2);
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pthread_t t[2];
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pthread_create(&t[0], NULL, Thread1, NULL);
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pthread_create(&t[1], NULL, Thread2, NULL);
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pthread_join(t[0], NULL);
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pthread_join(t[1], NULL);
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}
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK: Write of size 4 at {{.*}} by thread T1:
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// CHECK: Previous write of size 4 at {{.*}} by thread T2
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// CHECK: (mutexes: write [[M1:M[0-9]+]]):
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// CHECK: Mutex [[M1]] is already destroyed
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// CHECK-NOT: Mutex {{.*}} created at
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