1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2 | /* ***** BEGIN LICENSE BLOCK *****
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3 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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4 | *
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5 | * The contents of this file are subject to the Mozilla Public License Version
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6 | * 1.1 (the "License"); you may not use this file except in compliance with
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7 | * the License. You may obtain a copy of the License at
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8 | * http://www.mozilla.org/MPL/
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9 | *
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10 | * Software distributed under the License is distributed on an "AS IS" basis,
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11 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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12 | * for the specific language governing rights and limitations under the
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13 | * License.
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14 | *
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15 | * The Original Code is the Netscape Portable Runtime (NSPR).
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16 | *
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17 | * The Initial Developer of the Original Code is
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18 | * Netscape Communications Corporation.
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19 | * Portions created by the Initial Developer are Copyright (C) 1998-2000
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20 | * the Initial Developer. All Rights Reserved.
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21 | *
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22 | * Contributor(s):
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23 | *
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24 | * Alternatively, the contents of this file may be used under the terms of
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25 | * either the GNU General Public License Version 2 or later (the "GPL"), or
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26 | * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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27 | * in which case the provisions of the GPL or the LGPL are applicable instead
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28 | * of those above. If you wish to allow use of your version of this file only
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29 | * under the terms of either the GPL or the LGPL, and not to allow others to
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30 | * use your version of this file under the terms of the MPL, indicate your
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31 | * decision by deleting the provisions above and replace them with the notice
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32 | * and other provisions required by the GPL or the LGPL. If you do not delete
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33 | * the provisions above, a recipient may use your version of this file under
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34 | * the terms of any one of the MPL, the GPL or the LGPL.
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35 | *
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36 | * ***** END LICENSE BLOCK ***** */
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37 |
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38 | /***********************************************************************
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39 | **
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40 | ** Name: sem.c
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41 | **
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42 | ** Description: Tests Semaphonre functions.
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43 | **
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44 | ** Modification History:
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45 | ** 20-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
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46 | ** The debug mode will print all of the printfs associated with this test.
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47 | ** The regress mode will be the default mode. Since the regress tool limits
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48 | ** the output to a one line status:PASS or FAIL,all of the printf statements
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49 | ** have been handled with an if (debug_mode) statement.
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50 | ** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
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51 | ** recognize the return code from tha main program.
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52 | ***********************************************************************/
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53 |
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54 | /***********************************************************************
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55 | ** Includes
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56 | ***********************************************************************/
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57 | /* Used to get the command line option */
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58 | #include "plgetopt.h"
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59 |
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60 | #include "nspr.h"
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61 | #include "prpriv.h"
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62 |
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63 | #include <stdio.h>
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64 | #include <stdlib.h>
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65 | #include <string.h>
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66 |
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67 | PRIntn failed_already=0;
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68 | PRIntn debug_mode;
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69 |
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70 | /*
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71 | Since we don't have stdin, stdout everywhere, we will fake
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72 | it with our in-memory buffers called stdin and stdout.
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73 | */
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74 |
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75 | #define SBSIZE 1024
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76 |
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77 | #ifdef XP_MAC
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78 | #include "prlog.h"
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79 | #include "prsem.h"
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80 | #define printf PR_LogPrint
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81 | extern void SetupMacPrintfLog(char *logFile);
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82 | #else
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83 | #include "obsolete/prsem.h"
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84 | #endif
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85 |
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86 | static char stdinBuf[SBSIZE];
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87 | static char stdoutBuf[SBSIZE];
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88 |
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89 | static PRUintn stdinBufIdx = 0;
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90 | static PRUintn stdoutBufIdx = 0;
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91 | static PRStatus finalResult = PR_SUCCESS;
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92 |
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93 |
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94 | static size_t dread (PRUintn device, char *buf, size_t bufSize)
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95 | {
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96 | PRUintn i;
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97 |
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98 | /* during first read call, initialize the stdinBuf buffer*/
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99 | if (stdinBufIdx == 0) {
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100 | for (i=0; i<SBSIZE; i++)
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101 | stdinBuf[i] = i;
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102 | }
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103 |
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104 | /* now copy data from stdinBuf to the given buffer upto bufSize */
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105 | for (i=0; i<bufSize; i++) {
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106 | if (stdinBufIdx == SBSIZE)
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107 | break;
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108 | buf[i] = stdinBuf[stdinBufIdx++];
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109 | }
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110 |
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111 | return i;
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112 | }
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113 |
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114 | static size_t dwrite (PRUintn device, char *buf, size_t bufSize)
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115 | {
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116 | PRUintn i, j;
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117 |
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118 | /* copy data from the given buffer upto bufSize to stdoutBuf */
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119 | for (i=0; i<bufSize; i++) {
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120 | if (stdoutBufIdx == SBSIZE)
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121 | break;
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122 | stdoutBuf[stdoutBufIdx++] = buf[i];
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123 | }
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124 |
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125 | /* during last write call, compare the two buffers */
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126 | if (stdoutBufIdx == SBSIZE)
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127 | for (j=0; j<SBSIZE; j++)
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128 | if (stdinBuf[j] != stdoutBuf[j]) {
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129 | if (debug_mode) printf("data mismatch for index= %d \n", j);
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130 | finalResult = PR_FAILURE;
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131 | }
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132 |
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133 | return i;
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134 | }
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135 |
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136 | /*------------------ Following is the real test program ---------*/
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137 | /*
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138 | Program to copy standard input to standard output. The program
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139 | uses two threads. One reads the input and puts the data in a
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140 | double buffer. The other reads the buffer contents and writes
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141 | it to standard output.
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142 | */
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143 |
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144 | PRSemaphore *emptyBufs; /* number of empty buffers */
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145 | PRSemaphore *fullBufs; /* number of buffers that are full */
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146 |
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147 | #define BSIZE 100
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148 |
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149 | struct {
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150 | char data[BSIZE];
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151 | PRUintn nbytes; /* number of bytes in this buffer */
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152 | } buf[2];
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153 |
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154 | static void PR_CALLBACK reader(void *arg)
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155 | {
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156 | PRUintn i = 0;
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157 | size_t nbytes;
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158 |
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159 | do {
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160 | (void) PR_WaitSem(emptyBufs);
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161 | nbytes = dread(0, buf[i].data, BSIZE);
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162 | buf[i].nbytes = nbytes;
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163 | PR_PostSem(fullBufs);
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164 | i = (i + 1) % 2;
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165 | } while (nbytes > 0);
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166 | }
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167 |
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168 | static void writer(void)
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169 | {
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170 | PRUintn i = 0;
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171 | size_t nbytes;
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172 |
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173 | do {
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174 | (void) PR_WaitSem(fullBufs);
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175 | nbytes = buf[i].nbytes;
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176 | if (nbytes > 0) {
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177 | nbytes = dwrite(1, buf[i].data, nbytes);
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178 | PR_PostSem(emptyBufs);
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179 | i = (i + 1) % 2;
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180 | }
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181 | } while (nbytes > 0);
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182 | }
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183 |
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184 | int main(int argc, char **argv)
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185 | {
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186 | PRThread *r;
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187 |
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188 | PR_STDIO_INIT();
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189 | PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
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190 |
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191 | {
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192 | /* The command line argument: -d is used to determine if the test is being run
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193 | in debug mode. The regress tool requires only one line output:PASS or FAIL.
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194 | All of the printfs associated with this test has been handled with a if (debug_mode)
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195 | test.
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196 | Usage: test_name -d
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197 | */
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198 | PLOptStatus os;
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199 | PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
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200 | while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
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201 | {
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202 | if (PL_OPT_BAD == os) continue;
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203 | switch (opt->option)
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204 | {
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205 | case 'd': /* debug mode */
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206 | debug_mode = 1;
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207 | break;
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208 | default:
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209 | break;
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210 | }
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211 | }
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212 | PL_DestroyOptState(opt);
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213 | }
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214 |
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215 | /* main test */
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216 |
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217 | #ifdef XP_MAC
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218 | SetupMacPrintfLog("sem.log");
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219 | debug_mode = 1;
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220 | #endif
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221 |
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222 | emptyBufs = PR_NewSem(2); /* two empty buffers */
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223 |
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224 | fullBufs = PR_NewSem(0); /* zero full buffers */
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225 |
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226 | /* create the reader thread */
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227 |
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228 | r = PR_CreateThread(PR_USER_THREAD,
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229 | reader, 0,
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230 | PR_PRIORITY_NORMAL,
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231 | PR_LOCAL_THREAD,
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232 | PR_UNJOINABLE_THREAD,
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233 | 0);
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234 |
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235 | /* Do the writer operation in this thread */
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236 | writer();
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237 |
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238 | PR_DestroySem(emptyBufs);
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239 | PR_DestroySem(fullBufs);
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240 |
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241 | if (finalResult == PR_SUCCESS) {
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242 | if (debug_mode) printf("sem Test Passed.\n");
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243 | }
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244 | else{
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245 | if (debug_mode) printf("sem Test Failed.\n");
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246 | failed_already=1;
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247 | }
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248 | PR_Cleanup();
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249 | if(failed_already)
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250 | return 1;
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251 | else
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252 | return 0;
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253 | }
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