#include #include pthread_mutex_t a = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t b = PTHREAD_MUTEX_INITIALIZER; pthread_barrier_t bar; void *ba_lock(void *arg) { int ret, i; pthread_mutex_lock(&b); if (pthread_barrier_wait(&bar) == PTHREAD_BARRIER_SERIAL_THREAD) pthread_barrier_destroy(&bar); pthread_mutex_lock(&a); pthread_mutex_unlock(&a); pthread_mutex_unlock(&b); } int main(void) { pthread_t t; pthread_barrier_init(&bar, NULL, 2); if (pthread_create(&t, NULL, ba_lock, NULL)) { fprintf(stderr, "pthread_create() failed\n"); return 1; } pthread_mutex_lock(&a); if (pthread_barrier_wait(&bar) == PTHREAD_BARRIER_SERIAL_THREAD) pthread_barrier_destroy(&bar); pthread_mutex_lock(&b); pthread_mutex_unlock(&b); pthread_mutex_unlock(&a); pthread_join(t, NULL); return 0; } hidden' name='id' value='cbda794cf1bb2f4a2e75e11fda1f89457169772e'/> net-next plumbingsTobias Klauser

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