71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
|
/*
|
||
|
|
* mutex6e.c
|
||
|
|
*
|
||
|
|
* Tests PTHREAD_MUTEX_ERRORCHECK mutex type.
|
||
|
|
* Thread locks mutex twice (recursive lock).
|
||
|
|
* This should fail with an EDEADLK error.
|
||
|
|
* The second unlock attempt should fail with an EPERM error.
|
||
|
|
*
|
||
|
|
* Depends on API functions:
|
||
|
|
* pthread_create()
|
||
|
|
* pthread_join()
|
||
|
|
* pthread_mutexattr_init()
|
||
|
|
* pthread_mutexattr_destroy()
|
||
|
|
* pthread_mutexattr_settype()
|
||
|
|
* pthread_mutexattr_gettype()
|
||
|
|
* pthread_mutex_init()
|
||
|
|
* pthread_mutex_destroy()
|
||
|
|
* 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_lock(&mutex) == EDEADLK);
|
||
|
|
lockCount++;
|
||
|
|
assert(pthread_mutex_unlock(&mutex) == 0);
|
||
|
|
assert(pthread_mutex_unlock(&mutex) == EPERM);
|
||
|
|
|
||
|
|
return (void *) 555;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
main()
|
||
|
|
{
|
||
|
|
pthread_t t;
|
||
|
|
int result = 0;
|
||
|
|
int mxType = -1;
|
||
|
|
|
||
|
|
assert(pthread_mutexattr_init(&mxAttr) == 0);
|
||
|
|
assert(pthread_mutexattr_settype(&mxAttr, PTHREAD_MUTEX_ERRORCHECK) == 0);
|
||
|
|
assert(pthread_mutexattr_gettype(&mxAttr, &mxType) == 0);
|
||
|
|
assert(mxType == PTHREAD_MUTEX_ERRORCHECK);
|
||
|
|
|
||
|
|
assert(pthread_mutex_init(&mutex, &mxAttr) == 0);
|
||
|
|
|
||
|
|
assert(pthread_create(&t, NULL, locker, NULL) == 0);
|
||
|
|
|
||
|
|
assert(pthread_join(t, (void **) &result) == 0);
|
||
|
|
assert(result == 555);
|
||
|
|
|
||
|
|
assert(lockCount == 2);
|
||
|
|
|
||
|
|
assert(pthread_mutex_destroy(&mutex) == 0);
|
||
|
|
assert(pthread_mutexattr_destroy(&mxAttr) == 0);
|
||
|
|
|
||
|
|
exit(0);
|
||
|
|
|
||
|
|
/* Never reached */
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|