forked from OSchip/llvm-project
138 lines
2.9 KiB
C
138 lines
2.9 KiB
C
// RUN: %clang_cc1 -analyze -analyzer-checker=experimental.unix.PthreadLock -verify %s
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// Tests performing normal locking patterns and wrong locking orders
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typedef struct {
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void *foo;
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} pthread_mutex_t;
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typedef pthread_mutex_t lck_mtx_t;
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extern int pthread_mutex_lock(pthread_mutex_t *);
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extern int pthread_mutex_unlock(pthread_mutex_t *);
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extern int pthread_mutex_trylock(pthread_mutex_t *);
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extern int lck_mtx_lock(lck_mtx_t *);
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extern int lck_mtx_unlock(lck_mtx_t *);
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extern int lck_mtx_try_lock(lck_mtx_t *);
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pthread_mutex_t mtx1, mtx2;
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lck_mtx_t lck1, lck2;
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void
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ok1(void)
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{
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pthread_mutex_lock(&mtx1); // no-warning
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}
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void
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ok2(void)
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{
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pthread_mutex_unlock(&mtx1); // no-warning
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}
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void
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ok3(void)
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{
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pthread_mutex_lock(&mtx1); // no-warning
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pthread_mutex_unlock(&mtx1); // no-warning
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pthread_mutex_lock(&mtx1); // no-warning
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pthread_mutex_unlock(&mtx1); // no-warning
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}
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void
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ok4(void)
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{
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pthread_mutex_lock(&mtx1); // no-warning
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pthread_mutex_unlock(&mtx1); // no-warning
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pthread_mutex_lock(&mtx2); // no-warning
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pthread_mutex_unlock(&mtx2); // no-warning
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}
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void
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ok5(void)
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{
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if (pthread_mutex_trylock(&mtx1) == 0) // no-warning
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pthread_mutex_unlock(&mtx1); // no-warning
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}
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void
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ok6(void)
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{
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lck_mtx_lock(&lck1); // no-warning
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}
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void
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ok7(void)
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{
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if (lck_mtx_try_lock(&lck1) != 0) // no-warning
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lck_mtx_unlock(&lck1); // no-warning
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}
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void
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bad1(void)
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{
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pthread_mutex_lock(&mtx1); // no-warning
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pthread_mutex_lock(&mtx1); // expected-warning{{This lock has already been acquired}}
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}
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void
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bad2(void)
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{
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pthread_mutex_lock(&mtx1); // no-warning
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pthread_mutex_unlock(&mtx1); // no-warning
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pthread_mutex_lock(&mtx1); // no-warning
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pthread_mutex_lock(&mtx1); // expected-warning{{This lock has already been acquired}}
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}
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void
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bad3(void)
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{
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pthread_mutex_lock(&mtx1); // no-warning
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pthread_mutex_lock(&mtx2); // no-warning
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pthread_mutex_unlock(&mtx1); // expected-warning{{This was not the most recently acquired lock}}
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pthread_mutex_unlock(&mtx2);
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}
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void
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bad4(void)
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{
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if (pthread_mutex_trylock(&mtx1)) // no-warning
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return;
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pthread_mutex_lock(&mtx2); // no-warning
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pthread_mutex_unlock(&mtx1); // expected-warning{{This was not the most recently acquired lock}}
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}
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void
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bad5(void)
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{
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lck_mtx_lock(&lck1); // no-warning
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lck_mtx_lock(&lck1); // expected-warning{{This lock has already been acquired}}
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}
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void
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bad6(void)
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{
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lck_mtx_lock(&lck1); // no-warning
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lck_mtx_unlock(&lck1); // no-warning
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lck_mtx_lock(&lck1); // no-warning
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lck_mtx_lock(&lck1); // expected-warning{{This lock has already been acquired}}
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}
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void
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bad7(void)
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{
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lck_mtx_lock(&lck1); // no-warning
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lck_mtx_lock(&lck2); // no-warning
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lck_mtx_unlock(&lck1); // expected-warning{{This was not the most recently acquired lock}}
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lck_mtx_unlock(&lck2);
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}
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void
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bad8(void)
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{
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if (lck_mtx_try_lock(&lck1) == 0) // no-warning
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return;
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lck_mtx_lock(&lck2); // no-warning
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lck_mtx_unlock(&lck1); // expected-warning{{This was not the most recently acquired lock}}
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}
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