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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /*
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
- /***********************************************************************
- **
- ** Name: sem.c
- **
- ** Description: Tests Semaphonre functions.
- **
- ** Modification History:
- ** 20-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
- ** The debug mode will print all of the printfs associated with this test.
- ** The regress mode will be the default mode. Since the regress tool limits
- ** the output to a one line status:PASS or FAIL,all of the printf statements
- ** have been handled with an if (debug_mode) statement.
- ** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
- ** recognize the return code from tha main program.
- ***********************************************************************/
-
- /***********************************************************************
- ** Includes
- ***********************************************************************/
- /* Used to get the command line option */
- #include "plgetopt.h"
-
- #include "nspr.h"
- #include "prpriv.h"
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- PRIntn failed_already=0;
- PRIntn debug_mode;
-
- /*
- Since we don't have stdin, stdout everywhere, we will fake
- it with our in-memory buffers called stdin and stdout.
- */
-
- #define SBSIZE 1024
-
- #ifdef XP_MAC
- #include "prlog.h"
- #include "prsem.h"
- #define printf PR_LogPrint
- extern void SetupMacPrintfLog(char *logFile);
- #else
- #include "obsolete/prsem.h"
- #endif
-
- static char stdinBuf[SBSIZE];
- static char stdoutBuf[SBSIZE];
-
- static PRUintn stdinBufIdx = 0;
- static PRUintn stdoutBufIdx = 0;
- static PRStatus finalResult = PR_SUCCESS;
-
-
- static size_t dread (PRUintn device, char *buf, size_t bufSize)
- {
- PRUintn i;
-
- /* during first read call, initialize the stdinBuf buffer*/
- if (stdinBufIdx == 0) {
- for (i=0; i<SBSIZE; i++)
- stdinBuf[i] = i;
- }
-
- /* now copy data from stdinBuf to the given buffer upto bufSize */
- for (i=0; i<bufSize; i++) {
- if (stdinBufIdx == SBSIZE)
- break;
- buf[i] = stdinBuf[stdinBufIdx++];
- }
-
- return i;
- }
-
- static size_t dwrite (PRUintn device, char *buf, size_t bufSize)
- {
- PRUintn i, j;
-
- /* copy data from the given buffer upto bufSize to stdoutBuf */
- for (i=0; i<bufSize; i++) {
- if (stdoutBufIdx == SBSIZE)
- break;
- stdoutBuf[stdoutBufIdx++] = buf[i];
- }
-
- /* during last write call, compare the two buffers */
- if (stdoutBufIdx == SBSIZE)
- for (j=0; j<SBSIZE; j++)
- if (stdinBuf[j] != stdoutBuf[j]) {
- if (debug_mode) printf("data mismatch for index= %d \n", j);
- finalResult = PR_FAILURE;
- }
-
- return i;
- }
-
- /*------------------ Following is the real test program ---------*/
- /*
- Program to copy standard input to standard output. The program
- uses two threads. One reads the input and puts the data in a
- double buffer. The other reads the buffer contents and writes
- it to standard output.
- */
-
- PRSemaphore *emptyBufs; /* number of empty buffers */
- PRSemaphore *fullBufs; /* number of buffers that are full */
-
- #define BSIZE 100
-
- struct {
- char data[BSIZE];
- PRUintn nbytes; /* number of bytes in this buffer */
- } buf[2];
-
- static void PR_CALLBACK reader(void *arg)
- {
- PRUintn i = 0;
- size_t nbytes;
-
- do {
- (void) PR_WaitSem(emptyBufs);
- nbytes = dread(0, buf[i].data, BSIZE);
- buf[i].nbytes = nbytes;
- PR_PostSem(fullBufs);
- i = (i + 1) % 2;
- } while (nbytes > 0);
- }
-
- static void writer(void)
- {
- PRUintn i = 0;
- size_t nbytes;
-
- do {
- (void) PR_WaitSem(fullBufs);
- nbytes = buf[i].nbytes;
- if (nbytes > 0) {
- nbytes = dwrite(1, buf[i].data, nbytes);
- PR_PostSem(emptyBufs);
- i = (i + 1) % 2;
- }
- } while (nbytes > 0);
- }
-
- int main(int argc, char **argv)
- {
- PRThread *r;
-
- PR_STDIO_INIT();
- PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
-
- {
- /* The command line argument: -d is used to determine if the test is being run
- in debug mode. The regress tool requires only one line output:PASS or FAIL.
- All of the printfs associated with this test has been handled with a if (debug_mode)
- test.
- Usage: test_name -d
- */
- PLOptStatus os;
- PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
- while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
- {
- if (PL_OPT_BAD == os) continue;
- switch (opt->option)
- {
- case 'd': /* debug mode */
- debug_mode = 1;
- break;
- default:
- break;
- }
- }
- PL_DestroyOptState(opt);
- }
-
- /* main test */
-
- #ifdef XP_MAC
- SetupMacPrintfLog("sem.log");
- debug_mode = 1;
- #endif
-
- emptyBufs = PR_NewSem(2); /* two empty buffers */
-
- fullBufs = PR_NewSem(0); /* zero full buffers */
-
- /* create the reader thread */
-
- r = PR_CreateThread(PR_USER_THREAD,
- reader, 0,
- PR_PRIORITY_NORMAL,
- PR_LOCAL_THREAD,
- PR_UNJOINABLE_THREAD,
- 0);
-
- /* Do the writer operation in this thread */
- writer();
-
- PR_DestroySem(emptyBufs);
- PR_DestroySem(fullBufs);
-
- if (finalResult == PR_SUCCESS) {
- if (debug_mode) printf("sem Test Passed.\n");
- }
- else{
- if (debug_mode) printf("sem Test Failed.\n");
- failed_already=1;
- }
- PR_Cleanup();
- if(failed_already)
- return 1;
- else
- return 0;
- }
-