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242 lines
6.6 KiB
C
242 lines
6.6 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape Portable Runtime (NSPR).
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/***********************************************************************
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**
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** Name: sem.c
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**
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** Description: Tests Semaphonre functions.
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**
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** Modification History:
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** 20-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
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** The debug mode will print all of the printfs associated with this test.
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** The regress mode will be the default mode. Since the regress tool limits
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** the output to a one line status:PASS or FAIL,all of the printf statements
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** have been handled with an if (debug_mode) statement.
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** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
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** recognize the return code from tha main program.
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***********************************************************************/
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/***********************************************************************
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** Includes
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***********************************************************************/
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/* Used to get the command line option */
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#include "plgetopt.h"
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#include "nspr.h"
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#include "prpriv.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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PRIntn failed_already=0;
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PRIntn debug_mode;
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/*
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Since we don't have stdin, stdout everywhere, we will fake
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it with our in-memory buffers called stdin and stdout.
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*/
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#define SBSIZE 1024
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#include "obsolete/prsem.h"
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static char stdinBuf[SBSIZE];
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static char stdoutBuf[SBSIZE];
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static PRUintn stdinBufIdx = 0;
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static PRUintn stdoutBufIdx = 0;
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static PRStatus finalResult = PR_SUCCESS;
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static size_t dread (PRUintn device, char *buf, size_t bufSize)
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{
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PRUintn i;
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/* during first read call, initialize the stdinBuf buffer*/
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if (stdinBufIdx == 0) {
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for (i=0; i<SBSIZE; i++)
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stdinBuf[i] = i;
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}
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/* now copy data from stdinBuf to the given buffer upto bufSize */
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for (i=0; i<bufSize; i++) {
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if (stdinBufIdx == SBSIZE)
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break;
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buf[i] = stdinBuf[stdinBufIdx++];
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}
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return i;
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}
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static size_t dwrite (PRUintn device, char *buf, size_t bufSize)
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{
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PRUintn i, j;
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/* copy data from the given buffer upto bufSize to stdoutBuf */
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for (i=0; i<bufSize; i++) {
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if (stdoutBufIdx == SBSIZE)
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break;
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stdoutBuf[stdoutBufIdx++] = buf[i];
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}
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/* during last write call, compare the two buffers */
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if (stdoutBufIdx == SBSIZE)
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for (j=0; j<SBSIZE; j++)
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if (stdinBuf[j] != stdoutBuf[j]) {
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if (debug_mode) printf("data mismatch for index= %d \n", j);
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finalResult = PR_FAILURE;
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}
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return i;
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}
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/*------------------ Following is the real test program ---------*/
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/*
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Program to copy standard input to standard output. The program
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uses two threads. One reads the input and puts the data in a
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double buffer. The other reads the buffer contents and writes
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it to standard output.
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*/
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PRSemaphore *emptyBufs; /* number of empty buffers */
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PRSemaphore *fullBufs; /* number of buffers that are full */
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#define BSIZE 100
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struct {
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char data[BSIZE];
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PRUintn nbytes; /* number of bytes in this buffer */
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} buf[2];
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static void PR_CALLBACK reader(void *arg)
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{
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PRUintn i = 0;
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size_t nbytes;
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do {
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(void) PR_WaitSem(emptyBufs);
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nbytes = dread(0, buf[i].data, BSIZE);
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buf[i].nbytes = nbytes;
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PR_PostSem(fullBufs);
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i = (i + 1) % 2;
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} while (nbytes > 0);
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}
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static void writer(void)
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{
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PRUintn i = 0;
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size_t nbytes;
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do {
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(void) PR_WaitSem(fullBufs);
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nbytes = buf[i].nbytes;
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if (nbytes > 0) {
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nbytes = dwrite(1, buf[i].data, nbytes);
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PR_PostSem(emptyBufs);
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i = (i + 1) % 2;
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}
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} while (nbytes > 0);
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}
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int main(int argc, char **argv)
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{
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PRThread *r;
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PR_STDIO_INIT();
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PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
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{
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/* The command line argument: -d is used to determine if the test is being run
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in debug mode. The regress tool requires only one line output:PASS or FAIL.
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All of the printfs associated with this test has been handled with a if (debug_mode)
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test.
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Usage: test_name -d
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*/
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PLOptStatus os;
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PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
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while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
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{
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if (PL_OPT_BAD == os) continue;
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switch (opt->option)
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{
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case 'd': /* debug mode */
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debug_mode = 1;
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break;
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default:
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break;
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}
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}
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PL_DestroyOptState(opt);
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}
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/* main test */
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emptyBufs = PR_NewSem(2); /* two empty buffers */
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fullBufs = PR_NewSem(0); /* zero full buffers */
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/* create the reader thread */
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r = PR_CreateThread(PR_USER_THREAD,
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reader, 0,
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PR_PRIORITY_NORMAL,
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PR_LOCAL_THREAD,
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PR_UNJOINABLE_THREAD,
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0);
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/* Do the writer operation in this thread */
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writer();
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PR_DestroySem(emptyBufs);
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PR_DestroySem(fullBufs);
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if (finalResult == PR_SUCCESS) {
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if (debug_mode) printf("sem Test Passed.\n");
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}
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else{
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if (debug_mode) printf("sem Test Failed.\n");
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failed_already=1;
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}
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PR_Cleanup();
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if(failed_already)
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return 1;
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else
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return 0;
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}
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