test_rwlock.c - mozsearch

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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_rwlock.c

*/

#include "testutil.h"

#include "testutil_nss.h"

static PKIX_PL_RWLock *rwlock = NULL, *rwlock2 = NULL, *rwlock3 = NULL;

static PRThread *thread = NULL, *thread2 = NULL, *thread3 = NULL;

static void *plContext = NULL;

static void

reader(void)

    PKIX_Error *errorResult;

    errorResult = PKIX_PL_AcquireReaderLock(rwlock, NULL);

    if (errorResult)

        testError("PKIX_PL_AcquireReaderLock failed");

    (void)printf("\t[Thread #1 Read Lock #1.]\n");

    (void)printf("\t[Thread #1 Sleeplng for 1 seconds.]\n");

    PR_Sleep(PR_SecondsToInterval(1));

    PKIX_PL_ReleaseReaderLock(rwlock, NULL);

    if (errorResult)

        testError("PKIX_PL_ReleaseReaderLock failed");

    (void)printf("\t[Thread #1 Read UNLock #1.]\n");

static void

writer(void)

    PKIX_Error *errorResult;

    /* This thread should stick here until lock 1 is released */

    PKIX_PL_AcquireWriterLock(rwlock, NULL);

    if (errorResult)

        testError("PKIX_PL_AcquireWriterLock failed");

    (void)printf("\t[Thread #2 Write Lock #1.]\n");

    PKIX_PL_AcquireWriterLock(rwlock2, NULL);

    if (errorResult)

        testError("PKIX_PL_AcquireWriterLock failed");

    (void)printf("\t[Thread #2 Write Lock #2.]\n");

    (void)printf("\t[Thread #2 Sleeplng for 1 seconds.]\n");

    PR_Sleep(PR_SecondsToInterval(1));

    PKIX_PL_ReleaseWriterLock(rwlock2, NULL);

    if (errorResult)

        testError("PKIX_PL_ReleaseWriterLock failed");

    (void)printf("\t[Thread #2 Write UNLock #2.]\n");

    (void)printf("\t[Thread #2 Sleeplng for 1 seconds.]\n");

    PR_Sleep(PR_SecondsToInterval(1));

    PKIX_PL_ReleaseWriterLock(rwlock, NULL);

    if (errorResult)

        testError("PKIX_PL_ReleaseWriterLock failed");

    (void)printf("\t[Thread #2 Write UNLock #1.]\n");

    PR_JoinThread(thread3);

static void

reader2(void)

    PKIX_Error *errorResult;

    /* Reader 2 should yield here until the writer is done */

    PKIX_PL_AcquireReaderLock(rwlock2, NULL);

    if (errorResult)

        testError("PKIX_PL_AcquireReaderLock failed");

    (void)printf("\t[Thread #3 Read Lock #2.]\n");

    PKIX_PL_AcquireReaderLock(rwlock3, NULL);

    if (errorResult)

        testError("PKIX_PL_AcquireReaderLock failed");

    (void)printf("\t[Thread #3 Read Lock #3.]\n");

    (void)printf("\t[Thread #3 Sleeplng for 1 seconds.]\n");

    PR_Sleep(PR_SecondsToInterval(1));

    PKIX_PL_ReleaseReaderLock(rwlock3, NULL);

    if (errorResult)

        testError("PKIX_PL_ReleaseReaderLock failed");

    (void)printf("\t[Thread #3 Read UNLock #3.]\n");

    (void)printf("\t[Thread #3 Sleeplng for 1 seconds.]\n");

    PR_Sleep(PR_SecondsToInterval(1));

    PKIX_PL_ReleaseReaderLock(rwlock2, NULL);

    if (errorResult)

        testError("PKIX_PL_ReleaseReaderLock failed");

    (void)printf("\t[Thread #3 Read UNLock #2.]\n");

int

test_rwlock()

    PKIX_PL_String *outputString = NULL;

    PKIX_UInt32 j = 0;

    PKIX_Boolean bool;

    PKIX_UInt32 actualMinorVersion;

    PKIX_TEST_STD_VARS();

    startTests("RWLocks");

    PKIX_TEST_EXPECT_NO_ERROR(

        PKIX_PL_NssContext_Create(0, PKIX_FALSE, NULL, &plContext));

    (void)printf("Attempting to create new rwlock...\n");

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_RWLock_Create(&rwlock, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_RWLock_Create(&rwlock2, plContext));

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_RWLock_Create(&rwlock3, plContext));

    /* Test toString functionality */

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_ToString((PKIX_PL_Object *)rwlock, &outputString, plContext));

    (void)printf("Testing RWLock toString: %s\n",

                 PKIX_String2ASCII(outputString));

    PKIX_TEST_DECREF_BC(outputString);

    /* Call Equals on two different objects */

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_Equals((PKIX_PL_Object *)rwlock,

                                                    (PKIX_PL_Object *)rwlock2,

                                                    &bool,

                                                    plContext));

    (void)printf("Testing RWLock Equals: %d (should be 0)\n", bool);

    if (bool != 0)

        testError("Error in RWLock_Equals");

    /* Call Equals on two equal objects */

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_Object_Equals((PKIX_PL_Object *)rwlock,

                                                    (PKIX_PL_Object *)rwlock, &bool, plContext));

    (void)printf("Testing RWLock Equals: %d (should be 1)\n", bool);

    if (bool != 1)

        testError("Error in RWLock_Equals");

    subTest("Multi-Thread Read/Write Lock Testing");

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_AcquireReaderLock(rwlock, plContext));

    (void)printf("\t[Main Thread Read Lock #1.]\n");

    thread = PR_CreateThread(PR_USER_THREAD,

                             reader,

                             NULL,

                             PR_PRIORITY_NORMAL,

                             PR_LOCAL_THREAD,

                             PR_JOINABLE_THREAD,

0);

    thread2 = PR_CreateThread(PR_USER_THREAD,

                              writer,

                              NULL,

                              PR_PRIORITY_NORMAL,

                              PR_LOCAL_THREAD,

                              PR_JOINABLE_THREAD,

0);

    thread3 = PR_CreateThread(PR_USER_THREAD,

                              reader2,

                              NULL,

                              PR_PRIORITY_NORMAL,

                              PR_LOCAL_THREAD,

                              PR_JOINABLE_THREAD,

0);

    PR_JoinThread(thread);

    PKIX_TEST_EXPECT_NO_ERROR(PKIX_PL_ReleaseReaderLock(rwlock, plContext));

    (void)printf("\t[Main Thread Read Unlock #1.]\n");

    PR_JoinThread(thread2);

cleanup:

    /* Test destructor */

    subTest("Testing destructor...");

    PKIX_TEST_DECREF_AC(rwlock);

    PKIX_TEST_DECREF_AC(rwlock2);

    PKIX_TEST_DECREF_AC(rwlock3);

    pkixTestTempResult = PKIX_Shutdown(plContext);

    if (pkixTestTempResult)

        pkixTestErrorResult = pkixTestTempResult;

    PKIX_TEST_RETURN();

    endTests("RWLocks");

    return (0);