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/*
* File: condvar1.c
*
* Test Synopsis:
* - Test basic function of condition variable code.
*
* Test Method (Validation or Falsification):
* - Validation
*
* Requirements Tested:
* -
*
* Features Tested:
* -
*
* Cases Tested:
* -
*
* Description:
* -
*
* Environment:
* -
*
* Input:
* -
*
* Output:
* -
*
* Assumptions:
* -
*
* Pass Criteria:
* -
*
* Fail Criteria:
* -
*/
#include "test.h"
typedef struct cvthing_t_ cvthing_t;
struct cvthing_t_ {
pthread_cond_t notbusy;
pthread_mutex_t lock;
int busy;
int count;
};
static cvthing_t cvthing;
static enum {
NUMTHREADS = 10
};
static pthread_key_t key;
void *
mythread(void * arg)
{
assert(pthread_mutex_lock(&cvthing.lock) == 0);
cvthing.count++;
while (cvthing.busy)
{
assert(pthread_cond_wait(&cvthing.notbusy, &cvthing.lock) == 0);
}
assert(cvthing.busy == 0);
cvthing.count--;
assert(pthread_mutex_unlock(&cvthing.lock) == 0);
return 0;
}
int
main()
{
pthread_t t[NUMTHREADS];
int result[NUMTHREADS];
assert((t[0] = pthread_self()) != NULL);
assert(pthread_cond_init(&cvthing, NULL) == 0);
for (i = 1; i < NUMTHREADS; i++)
{
assert(pthread_create(&t[i], NULL, mythread, (void *) i) == 0);
}
while (cvthing.count < NUMTHREADS)
{}
assert(pthread_mutex_lock(&cvthing.lock) == 0);
cvthing.busy = 0;
assert(pthread_cond_signal(&cvthing.notbusy) == 0);
assert(pthread_mutex_unlock(&cvthing.lock) == 0);
for (i = 1; i < NUMTHREADS; i++)
{
assert(pthread_join(t[i], (void *) &result[i]) == 0);
}
assert(cvthing.count == 0);
assert(pthread_cond_destroy(&cvthing) == 0);
return 0;
}
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