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
48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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#include "test.h"
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#if defined(__linux__)
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#define USE_PTHREAD_SETNAME_NP __GLIBC_PREREQ(2, 12)
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#elif defined(__FreeBSD__)
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#include <pthread_np.h>
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#define USE_PTHREAD_SETNAME_NP 1
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#define pthread_setname_np pthread_set_name_np
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#else
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#define USE_PTHREAD_SETNAME_NP 0
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#endif
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extern "C" void AnnotateThreadName(const char *f, int l, const char *name);
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int Global;
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void *Thread1(void *x) {
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barrier_wait(&barrier);
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AnnotateThreadName(__FILE__, __LINE__, "Thread1");
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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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#if USE_PTHREAD_SETNAME_NP
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pthread_setname_np(pthread_self(), "Thread2");
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#else
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AnnotateThreadName(__FILE__, __LINE__, "Thread2");
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#endif
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Global--;
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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: Thread T1 'Thread1'
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// CHECK: Thread T2 'Thread2'
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