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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+/***********************************************************************
+**
+** 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
+
+#include "obsolete/prsem.h"
+
+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 */
+
+ 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;
+ }
+}