210 lines
3.6 KiB
C
210 lines
3.6 KiB
C
/*
|
|
* File:
|
|
*
|
|
* Test Synopsis:
|
|
* - Test pthread_cond_broadcast.
|
|
*
|
|
* Test Method (Validation or Falsification):
|
|
* - Validation
|
|
*
|
|
* Requirements Tested:
|
|
* -
|
|
*
|
|
* Features Tested:
|
|
* -
|
|
*
|
|
* Cases Tested:
|
|
* -
|
|
*
|
|
* Description:
|
|
* - Test broadcast with NUMTHREADS (=5) waiting CVs.
|
|
*
|
|
* Environment:
|
|
* -
|
|
*
|
|
* Input:
|
|
* - None.
|
|
*
|
|
* Output:
|
|
* - File name, Line number, and failed expression on failure.
|
|
* - No output on success.
|
|
*
|
|
* Assumptions:
|
|
* -
|
|
*
|
|
* Pass Criteria:
|
|
* - Process returns zero exit status.
|
|
*
|
|
* Fail Criteria:
|
|
* - Process returns non-zero exit status.
|
|
*/
|
|
|
|
#include "test.h"
|
|
#include <sys/timeb.h>
|
|
|
|
/*
|
|
* Create NUMTHREADS threads in addition to the Main thread.
|
|
*/
|
|
enum {
|
|
NUMTHREADS = 5
|
|
};
|
|
|
|
typedef struct bag_t_ bag_t;
|
|
struct bag_t_ {
|
|
int threadnum;
|
|
int started;
|
|
/* Add more per-thread state variables here */
|
|
};
|
|
|
|
static bag_t threadbag[NUMTHREADS + 1];
|
|
|
|
typedef struct cvthing_t_ cvthing_t;
|
|
|
|
struct cvthing_t_ {
|
|
pthread_cond_t notbusy;
|
|
pthread_mutex_t lock;
|
|
int shared;
|
|
};
|
|
|
|
static cvthing_t cvthing = {
|
|
PTHREAD_COND_INITIALIZER,
|
|
PTHREAD_MUTEX_INITIALIZER,
|
|
0
|
|
};
|
|
|
|
static pthread_mutex_t start_flag = PTHREAD_MUTEX_INITIALIZER;
|
|
|
|
static struct timespec abstime = { 0, 0 };
|
|
|
|
static int awoken;
|
|
|
|
void *
|
|
mythread(void * arg)
|
|
{
|
|
bag_t * bag = (bag_t *) arg;
|
|
|
|
assert(bag == &threadbag[bag->threadnum]);
|
|
assert(bag->started == 0);
|
|
bag->started = 1;
|
|
|
|
/* Wait for the start gun */
|
|
assert(pthread_mutex_lock(&start_flag) == 0);
|
|
assert(pthread_mutex_unlock(&start_flag) == 0);
|
|
|
|
assert(pthread_mutex_lock(&cvthing.lock) == 0);
|
|
|
|
while (! (cvthing.shared > 0))
|
|
assert(pthread_cond_timedwait(&cvthing.notbusy, &cvthing.lock, &abstime) == 0);
|
|
|
|
assert(cvthing.shared > 0);
|
|
|
|
awoken++;
|
|
|
|
assert(pthread_mutex_unlock(&cvthing.lock) == 0);
|
|
|
|
return (void *) 0;
|
|
}
|
|
|
|
int
|
|
main()
|
|
{
|
|
int failed = 0;
|
|
int i;
|
|
pthread_t t[NUMTHREADS + 1];
|
|
|
|
struct timeb currSysTime;
|
|
const DWORD NANOSEC_PER_MILLISEC = 1000000;
|
|
|
|
cvthing.shared = 0;
|
|
|
|
assert((t[0] = pthread_self()) != NULL);
|
|
|
|
assert(cvthing.notbusy == PTHREAD_COND_INITIALIZER);
|
|
|
|
assert(cvthing.lock == PTHREAD_MUTEX_INITIALIZER);
|
|
|
|
assert(pthread_mutex_lock(&start_flag) == 0);
|
|
|
|
ftime(&currSysTime);
|
|
|
|
abstime.tv_sec = currSysTime.time;
|
|
abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;
|
|
|
|
abstime.tv_sec += 5;
|
|
|
|
assert((t[0] = pthread_self()) != NULL);
|
|
|
|
awoken = 0;
|
|
|
|
for (i = 1; i <= NUMTHREADS; i++)
|
|
{
|
|
threadbag[i].started = 0;
|
|
threadbag[i].threadnum = i;
|
|
assert(pthread_create(&t[i], NULL, mythread, (void *) &threadbag[i]) == 0);
|
|
}
|
|
|
|
/*
|
|
* Code to control or munipulate child threads should probably go here.
|
|
*/
|
|
|
|
assert(pthread_mutex_unlock(&start_flag) == 0);
|
|
|
|
/*
|
|
* Give threads time to start.
|
|
*/
|
|
Sleep(2000);
|
|
|
|
assert(pthread_mutex_lock(&cvthing.lock) == 0);
|
|
|
|
cvthing.shared++;
|
|
|
|
assert(pthread_mutex_unlock(&cvthing.lock) == 0);
|
|
|
|
assert(pthread_cond_broadcast(&cvthing.notbusy) == 0);
|
|
|
|
/*
|
|
* Give threads time to complete.
|
|
*/
|
|
Sleep(2000);
|
|
|
|
/*
|
|
* Cleanup the CV.
|
|
*/
|
|
|
|
assert(pthread_mutex_destroy(&cvthing.lock) == 0);
|
|
|
|
assert(cvthing.lock == NULL);
|
|
|
|
assert(pthread_cond_destroy(&cvthing.notbusy) == 0);
|
|
|
|
assert(cvthing.notbusy == NULL);
|
|
|
|
/*
|
|
* Standard check that all threads started.
|
|
*/
|
|
for (i = 1; i <= NUMTHREADS; i++)
|
|
{
|
|
failed = !threadbag[i].started;
|
|
|
|
if (failed)
|
|
{
|
|
fprintf(stderr, "Thread %d: started %d\n", i, threadbag[i].started);
|
|
}
|
|
}
|
|
|
|
assert(!failed);
|
|
|
|
/*
|
|
* Check any results here.
|
|
*/
|
|
|
|
assert(awoken == NUMTHREADS);
|
|
|
|
/*
|
|
* Success.
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
|