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/*
* rwlock3.c
*
* Declare a static rwlock object, lock it, trylock it,
* and then unlock it again.
*
* Depends on API functions:
* pthread_rwlock_wrlock()
* pthread_rwlock_trywrlock()
* pthread_rwlock_unlock()
*/
#include "test.h"
pthread_rwlock_t rwlock1 = PTHREAD_RWLOCK_INITIALIZER;
static int washere = 0;
void * func(void * arg)
{
assert(pthread_rwlock_trywrlock(&rwlock1) == EBUSY);
washere = 1;
return 0;
}
int
main()
{
pthread_t t;
assert(pthread_rwlock_wrlock(&rwlock1) == 0);
assert(pthread_create(&t, NULL, func, NULL) == 0);
Sleep(2000);
assert(pthread_rwlock_unlock(&rwlock1) == 0);
assert(washere == 1);
return 0;
}
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