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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* test_mutex2.c
*
* Tests multi-threaded functionality of Mutex
*
*/
#include "testutil.h"
#include "testutil_nss.h"
static int box1 = 0, box2 = 0, box3 = 0;
static PKIX_PL_Mutex *mutex;
static PRCondVar *cv;
static void *plContext = NULL;
static void
consumer(/* ARGSUSED */ void *arg)
{
PRStatus status = PR_SUCCESS;
PKIX_Error *errorResult;
int i = 0;
for (i = 0; i < 5; i++) {
(void)PKIX_PL_Mutex_Lock(mutex, plContext);
while (((box1 == 0) ||
(box2 == 0) ||
(box3 == 0)) &&
(status == PR_SUCCESS))
status = PR_WaitCondVar(cv, PR_INTERVAL_NO_TIMEOUT);
(void)printf("\tConsumer got Box1 = %d ", box1);
box1 = 0;
(void)printf("Box2 = %d ", box2);
box2 = 0;
(void)printf("Box3 = %d\n", box3);
box3 = 0;
status = PR_NotifyAllCondVar(cv);
if (status == PR_FAILURE)
(void)printf("Consumer error while notifying condvar\n");
errorResult = PKIX_PL_Mutex_Unlock(mutex, plContext);
if (errorResult)
testError("PKIX_PL_Mutex_Unlock failed");
}
(void)printf("Consumer exiting...\n");
}
static void
producer(void *arg)
{
PRStatus status = PR_SUCCESS;
int value = *(int *)arg;
int i = 0;
int *box;
PKIX_Error *errorResult;
if (value == 10)
box = &box1;
else if (value == 20)
box = &box2;
else if (value == 30)
box = &box3;
for (i = 0; i < 5; i++) {
(void)PKIX_PL_Mutex_Lock(mutex, plContext);
while ((*box != 0) && (status == PR_SUCCESS))
status = PR_WaitCondVar(cv, PR_INTERVAL_NO_TIMEOUT);
*box = i + 1;
(void)printf("\tProducer %d put value: %d\n", value, *box);
status = PR_NotifyAllCondVar(cv);
if (status == PR_FAILURE)
(void)printf("Producer %d error while notifying condvar\n",
value);
errorResult = PKIX_PL_Mutex_Unlock(mutex, plContext);
if (errorResult)
testError("PKIX_PL_Mutex_Unlock failed");
}
}
int
test_mutex2(int argc, char *argv[])
{
PRThread *consThread, *prodThread, *prodThread2, *prodThread3;
int x = 10, y = 20, z = 30;
PKIX_UInt32 actualMinorVersion;
PKIX_UInt32 j = 0;
PKIX_TEST_STD_VARS();
startTests("Mutex and Threads");
PKIX_TEST_EXPECT_NO_ERROR(
PKIX_PL_NssContext_Create(0, PKIX_FALSE, NULL, &plContext));
(void)printf("Attempting to create new mutex...\n");
subTest("Mutex Creation");
PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Mutex_Create(&mutex, plContext));
cv = PR_NewCondVar(*(PRLock **)mutex);
subTest("Starting consumer thread");
consThread = PR_CreateThread(PR_USER_THREAD,
consumer,
NULL,
PR_PRIORITY_NORMAL,
PR_LOCAL_THREAD,
PR_JOINABLE_THREAD,
0);
subTest("Starting producer thread 1");
prodThread = PR_CreateThread(PR_USER_THREAD,
producer,
&x,
PR_PRIORITY_NORMAL,
PR_LOCAL_THREAD,
PR_JOINABLE_THREAD,
0);
subTest("Starting producer thread 2");
prodThread2 = PR_CreateThread(PR_USER_THREAD,
producer,
&y,
PR_PRIORITY_NORMAL,
PR_LOCAL_THREAD,
PR_JOINABLE_THREAD,
0);
subTest("Starting producer thread 3");
prodThread3 = PR_CreateThread(PR_USER_THREAD,
producer,
&z,
PR_PRIORITY_NORMAL,
PR_LOCAL_THREAD,
PR_JOINABLE_THREAD,
0);
PR_JoinThread(consThread);
(void)PR_DestroyCondVar(cv);
PKIX_TEST_DECREF_BC(mutex);
/*
* Note: we should also be freeing each thread's stack, but we
* don't have access to the prodThread->stack variable (since
* it is not exported). As a result, we have 120 bytes of memory
* leakage.
*/
PR_Free(prodThread);
PR_Free(prodThread2);
PR_Free(prodThread3);
cleanup:
PKIX_Shutdown(plContext);
PKIX_TEST_RETURN();
endTests("Mutex and Threads");
return (0);
}
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