62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/*
|
|
* mutex7n.c
|
|
*
|
|
* Tests PTHREAD_MUTEX_NORMAL mutex type.
|
|
* Thread locks then trylocks mutex (attempted recursive lock).
|
|
* The thread should lock first time and EBUSY second time.
|
|
*
|
|
* Depends on API functions:
|
|
* pthread_create()
|
|
* pthread_mutexattr_init()
|
|
* pthread_mutexattr_settype()
|
|
* pthread_mutexattr_gettype()
|
|
* pthread_mutex_init()
|
|
* pthread_mutex_lock()
|
|
* pthread_mutex_unlock()
|
|
*/
|
|
|
|
#include "test.h"
|
|
|
|
static int lockCount = 0;
|
|
|
|
static pthread_mutex_t mutex;
|
|
static pthread_mutexattr_t mxAttr;
|
|
|
|
void * locker(void * arg)
|
|
{
|
|
assert(pthread_mutex_lock(&mutex) == 0);
|
|
lockCount++;
|
|
assert(pthread_mutex_trylock(&mutex) == EBUSY);
|
|
lockCount++;
|
|
assert(pthread_mutex_unlock(&mutex) == 0);
|
|
assert(pthread_mutex_unlock(&mutex) == EPERM);
|
|
|
|
return (void *) 555;
|
|
}
|
|
|
|
int
|
|
main()
|
|
{
|
|
pthread_t t;
|
|
int mxType = -1;
|
|
|
|
assert(pthread_mutexattr_init(&mxAttr) == 0);
|
|
assert(pthread_mutexattr_settype(&mxAttr, PTHREAD_MUTEX_NORMAL) == 0);
|
|
assert(pthread_mutexattr_gettype(&mxAttr, &mxType) == 0);
|
|
assert(mxType == PTHREAD_MUTEX_NORMAL);
|
|
|
|
assert(pthread_mutex_init(&mutex, &mxAttr) == 0);
|
|
|
|
assert(pthread_create(&t, NULL, locker, NULL) == 0);
|
|
|
|
Sleep(1000);
|
|
|
|
assert(lockCount == 2);
|
|
|
|
exit(0);
|
|
|
|
/* Never reached */
|
|
return 0;
|
|
}
|
|
|