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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Netscape Portable Runtime (NSPR).
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/***********************************************************************
+**
+** 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;
+}