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lightning-sunbird  0.9+nobinonly
initclk.c
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998-2000
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
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00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
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00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 /*
00039  * This is a regression test for the bug that the interval timer
00040  * is not initialized when _PR_CreateCPU calls PR_IntervalNow.
00041  * The bug would make this test program finish prematurely,
00042  * when the SHORT_TIMEOUT period expires.  The correct behavior
00043  * is for the test to finish when the LONG_TIMEOUT period expires.
00044  */
00045 
00046 #include "prlock.h"
00047 #include "prcvar.h"
00048 #include "prthread.h"
00049 #include "prinrval.h"
00050 #include "prlog.h"
00051 #include <stdio.h>
00052 #include <stdlib.h>
00053 
00054 /* The timeouts, in milliseconds */
00055 #define SHORT_TIMEOUT 1000
00056 #define LONG_TIMEOUT 3000
00057 
00058 PRLock *lock1, *lock2;
00059 PRCondVar *cv1, *cv2;
00060 
00061 void ThreadFunc(void *arg)
00062 {
00063     PR_Lock(lock1);
00064     PR_WaitCondVar(cv1, PR_MillisecondsToInterval(SHORT_TIMEOUT));
00065     PR_Unlock(lock1);
00066 }
00067 
00068 int main()
00069 {
00070     PRThread *thread;
00071     PRIntervalTime start, end;
00072     PRUint32 elapsed_ms;
00073 
00074     lock1 = PR_NewLock();
00075     PR_ASSERT(NULL != lock1);
00076     cv1 = PR_NewCondVar(lock1);
00077     PR_ASSERT(NULL != cv1);
00078     lock2 = PR_NewLock();
00079     PR_ASSERT(NULL != lock2);
00080     cv2 = PR_NewCondVar(lock2);
00081     PR_ASSERT(NULL != cv2);
00082     start = PR_IntervalNow();
00083     thread = PR_CreateThread(
00084             PR_USER_THREAD,
00085             ThreadFunc,
00086             NULL,
00087             PR_PRIORITY_NORMAL,
00088             PR_LOCAL_THREAD,
00089             PR_JOINABLE_THREAD,
00090             0);
00091     PR_ASSERT(NULL != thread);
00092     PR_Lock(lock2);
00093     PR_WaitCondVar(cv2, PR_MillisecondsToInterval(LONG_TIMEOUT));
00094     PR_Unlock(lock2);
00095     PR_JoinThread(thread);
00096     end = PR_IntervalNow();
00097     elapsed_ms = PR_IntervalToMilliseconds((PRIntervalTime)(end - start));
00098     /* Allow 100ms imprecision */
00099     if (elapsed_ms < LONG_TIMEOUT - 100 || elapsed_ms > LONG_TIMEOUT + 100) {
00100         printf("Elapsed time should be %u ms but is %u ms\n",
00101                 LONG_TIMEOUT, elapsed_ms);
00102         printf("FAIL\n");
00103         exit(1);
00104     }
00105        printf("Elapsed time: %u ms, expected time: %u ms\n",
00106                LONG_TIMEOUT, elapsed_ms);
00107     printf("PASS\n");
00108     return 0;
00109 }