From bd5969fc876a10b18613302db7087ef3c40f18e1 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Thu, 7 Mar 2024 17:28:00 -0500 Subject: lib: Add mlibc Signed-off-by: Ian Moffett --- lib/mlibc/tests/posix/pthread_barrier.c | 56 +++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 lib/mlibc/tests/posix/pthread_barrier.c (limited to 'lib/mlibc/tests/posix/pthread_barrier.c') diff --git a/lib/mlibc/tests/posix/pthread_barrier.c b/lib/mlibc/tests/posix/pthread_barrier.c new file mode 100644 index 0000000..213ba8f --- /dev/null +++ b/lib/mlibc/tests/posix/pthread_barrier.c @@ -0,0 +1,56 @@ +#include +#include +#include + +pthread_barrier_t barrier; +_Atomic int hitBarrierCount, pastBarrierCount; + +static void *worker(void *arg) { + (void)arg; + hitBarrierCount++; + pthread_barrier_wait(&barrier); + pastBarrierCount++; + return NULL; +} + +int main() { + // pthread_barrierattr_t + pthread_barrierattr_t attr; + pthread_barrierattr_init(&attr); + + int pshared; + pthread_barrierattr_getpshared(&attr, &pshared); + assert(pshared == PTHREAD_PROCESS_PRIVATE); + + pthread_barrierattr_setpshared(&attr, PTHREAD_PROCESS_SHARED); + pthread_barrierattr_getpshared(&attr, &pshared); + assert(pshared == PTHREAD_PROCESS_SHARED); + + pthread_barrierattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE); + pthread_barrierattr_getpshared(&attr, &pshared); + assert(pshared == PTHREAD_PROCESS_PRIVATE); + + // pthread_barrier_t + pthread_barrier_init(&barrier, &attr, 3); + pthread_barrierattr_destroy(&attr); + + pthread_t thread1; + int ret = pthread_create(&thread1, NULL, &worker, NULL); + assert(!ret); + + pthread_t thread2; + ret = pthread_create(&thread2, NULL, &worker, NULL); + assert(!ret); + + sleep(1); + + // Make sure the barrier actually stops threads from proceeding. + assert(pastBarrierCount == 0); + assert(hitBarrierCount <= 2); + + hitBarrierCount++; + pthread_barrier_wait(&barrier); + assert(hitBarrierCount == 3); + + pthread_barrier_destroy(&barrier); +} -- cgit v1.2.3