newlib-cygwin/winsup/testsuite/winsup.api/pthread/rwlock2.c

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/*
* rwlock2.c
*
* Declare a static rwlock object, lock it,
* and then unlock it again.
*
* Depends on API functions:
* pthread_rwlock_rdlock()
* pthread_rwlock_unlock()
*/
#include "test.h"
pthread_rwlock_t rwlock = PTHREAD_RWLOCK_INITIALIZER;
int
main()
{
assert(rwlock == PTHREAD_RWLOCK_INITIALIZER);
assert(pthread_rwlock_rdlock(&rwlock) == 0);
assert(rwlock != PTHREAD_RWLOCK_INITIALIZER);
assert(rwlock != NULL);
assert(pthread_rwlock_unlock(&rwlock) == 0);
assert(pthread_rwlock_destroy(&rwlock) == 0);
assert(rwlock == NULL);
return 0;
}