author | hgs |
Tue, 02 Nov 2010 19:23:22 +0530 | |
changeset 79 | 564bc7b7ad27 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* THELLOU.C |
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* A variant of "Hello World" which reports various bits of its environment |
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* and returns an interesting exit status |
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* |
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* |
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*/ |
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|
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|
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <string.h> |
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#include <sys/wait.h> |
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#include "CTEST.H" |
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|
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|
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#ifdef __WINS__ |
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int triangle_recurse(wchar_t* prog, wchar_t* num, int progress) |
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{ |
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printf("\nBut not under WINS where I'll be told 0\n"); |
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return 0; |
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} |
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|
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int triangle_parallel(wchar_t* prog, wchar_t* num) |
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{ |
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printf("\nBut not under WINS where I'll be told 0\n"); |
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return 0; |
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} |
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|
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#else |
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|
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int triangle_recurse(wchar_t* prog, wchar_t* num, int progress) |
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{ |
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int n; |
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int pid, ret; |
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char cmd[100]; |
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wchar_t wcmd[100]; |
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int fids[3]; |
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char tmpbuf[100]; |
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|
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|
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wcstombs(tmpbuf, num, 50); |
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n = atol(tmpbuf); |
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if (n<1) |
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return 0; |
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|
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wcstombs(tmpbuf, prog, 50); |
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sprintf(cmd, "%s do_triangle %d", tmpbuf, n-1); |
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mbstowcs(wcmd, cmd, 100); |
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if (progress) |
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{ |
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pid=wpopen3(wcmd, (wchar_t*)L"", 0, fids); |
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if (pid<0) |
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{ |
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fprintf(stderr, "Executing %s, ", cmd); |
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perror("wpopen3 failed"); |
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return -1999999; |
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} |
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while (1) |
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{ |
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int n=waitpid(pid, &ret, WNOHANG); |
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if (n==pid) |
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break; |
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printf("."); |
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fflush(stdout); |
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sleep(1); |
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} |
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} |
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else |
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ret=wsystem(wcmd); |
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return n+ret; |
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} |
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|
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int triangle_parallel(wchar_t* prog, wchar_t* num) |
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{ |
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int n; |
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int pid, pid1, pid2, ret1, ret2, base, split; |
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char cmd[100]; |
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wchar_t wcmd[100]; |
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int fids1[3], fids2[3]; |
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char* basep; |
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char tmpbuf[100]; |
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98 |
|
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wcstombs(tmpbuf, num, 50); |
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n = atol(tmpbuf); |
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if (n<1) |
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return 0; |
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basep=getenv("TRIANGLE_BASE"); |
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if (basep==0) |
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105 |
return 0; |
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base=atol(basep); |
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|
107 |
|
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|
108 |
/* we have to add up the numbers base..n inclusive |
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109 |
*/ |
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|
110 |
if (base==n) |
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111 |
return n; |
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112 |
if (base+1==n) |
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113 |
return base+n; |
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|
114 |
|
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|
115 |
/* At least 3 numbers, so split it into subtasks for child processes |
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116 |
*/ |
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117 |
split = (n-base)/2; |
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118 |
|
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119 |
wcstombs(tmpbuf, prog, 100); |
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120 |
sprintf(cmd, "%s do_trianglep %d", tmpbuf, base+split); |
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121 |
mbstowcs(wcmd, cmd, 100); |
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|
122 |
pid1=wpopen3(wcmd, (wchar_t*)L"", 0, fids1); |
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123 |
if (pid1<0) |
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124 |
{ |
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125 |
fprintf(stderr, "Doing %d..%d of %d..%d", base+split, base, n, base); |
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126 |
perror("popen3 failed"); |
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127 |
return -1999999; |
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128 |
} |
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129 |
|
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130 |
sprintf(cmd, "%d", base+split+1); |
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131 |
mbstowcs(wcmd, cmd, 100); |
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132 |
wsetenv((wchar_t*)L"TRIANGLE_BASE", wcmd, 1); |
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|
133 |
|
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134 |
sprintf(cmd, "%s do_trianglep %d", prog, n); |
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135 |
mbstowcs(wcmd, cmd, 100); |
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|
136 |
pid2=wpopen3(wcmd, (wchar_t*)L"", 0, fids2); |
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|
137 |
if (pid2<0) |
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|
138 |
{ |
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|
139 |
fprintf(stderr, "Doing %d..%d of %d..%d", n, base+split+1, n, base); |
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|
140 |
perror("wpopen3 failed"); |
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|
141 |
return -1999999; |
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|
142 |
} |
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|
143 |
|
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|
144 |
/* Now collect the results */ |
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|
145 |
ret1=-10000; |
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|
146 |
ret2=-10000; |
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147 |
for (n=0; n<2; n++) |
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148 |
{ |
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149 |
int ret=-3999999; |
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150 |
pid=wait(&ret); |
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151 |
if (pid<0) |
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152 |
{ |
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153 |
perror("waitpid failed"); |
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154 |
return -2999999; |
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155 |
} |
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156 |
if (pid==pid1) |
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157 |
{ |
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158 |
pid1=-1; |
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|
159 |
ret1=ret; |
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160 |
} |
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161 |
else if (pid==pid2) |
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|
162 |
{ |
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|
163 |
pid2=-1; |
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164 |
ret2=ret; |
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165 |
} |
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|
166 |
else |
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|
167 |
printf("Unexpected pid %d (not %d or %d)\n", pid, pid1, pid2); |
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|
168 |
} |
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|
169 |
return ret1+ret2; |
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|
170 |
} |
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|
171 |
|
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|
172 |
#endif |
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|
173 |
|
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|
174 |
/** |
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|
175 |
Usage: THELLOU [triangle[p] <n>] |
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|
176 |
|
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|
177 |
@SYMTestCaseID SYSLIB-STDLIB-CT-1096 |
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|
178 |
@SYMTestCaseDesc Tests for printing to standard output stream |
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|
179 |
@SYMTestPriority High |
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|
180 |
@SYMTestActions Prints some stuff (looks at args, getenv("USER"), cwd) to stdout and stderr. |
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|
181 |
Will compute triangle numbers by calling itself recursively, or parallel subdivison |
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|
182 |
@SYMTestExpectedResults Test must not fail |
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|
183 |
@SYMREQ REQ0000 |
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|
184 |
*/ |
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|
185 |
int wmain (int argc, wchar_t *argv[]) |
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|
186 |
{ |
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|
187 |
wchar_t *user=wgetenv((wchar_t*)L"USER"); |
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|
188 |
char cwd[MAXPATHLEN]; |
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|
189 |
int ret=3, i; |
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|
190 |
char tmpbuf[100]; |
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|
191 |
|
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|
192 |
start_redirection_server(); |
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|
193 |
|
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|
194 |
if (argc==3 && wcscmp(argv[1],(wchar_t*)L"do_triangle")==0) |
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|
195 |
return triangle_recurse(argv[0], argv[2], 0); |
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|
196 |
|
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|
197 |
if (argc==3 && wcscmp(argv[1],(wchar_t*)L"do_trianglep")==0) |
e4d67989cc36
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|
198 |
return triangle_parallel(argv[0], argv[2]); |
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|
199 |
|
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|
200 |
if (user) |
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|
201 |
{ |
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|
202 |
char tmp[100]; |
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|
203 |
wcstombs(tmp,user,100); |
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Revision: 201002
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|
204 |
printf("Hello %s\n", tmp); |
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|
205 |
ret=4; |
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|
206 |
} |
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|
207 |
else |
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Revision: 201002
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|
208 |
printf("Greetings.\n"); |
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|
209 |
|
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Revision: 201002
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|
210 |
printf("I am process %d\n", getpid()); |
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Revision: 201002
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|
211 |
|
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if (getcwd(cwd,sizeof(cwd))!=0) |
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printf("I am speaking to you from %s\n", cwd); |
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|
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printf("I have %d arguments: ", argc); |
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for (i=0; i<argc; i++) |
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{ |
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wcstombs(tmpbuf, argv[i], sizeof(tmpbuf)); |
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printf(">%s< ", tmpbuf); |
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} |
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printf("\r\n"); |
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|
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printf("In a few moments I shall say %c to stderr:\n", 'a'+argc); |
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fflush(stdout); |
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|
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fprintf(stderr, "%c\n", 'a'+argc); |
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fflush(stderr); |
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|
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if (argc==3 && wcscmp(argv[1],(wchar_t*)L"triangle")==0) |
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{ |
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printf("For my next trick I shall compute the triangle of %s: ", argv[2]); |
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fflush(stdout); |
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ret=triangle_recurse(argv[0], argv[2], 1); |
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printf("it's %d\n", ret); |
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} |
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|
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if (argc==3 && wcscmp(argv[1],(wchar_t*)L"trianglep")==0) |
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{ |
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printf("I shall now compute the triangle of %s using a parallel algorithm: ", argv[2]); |
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fflush(stdout); |
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wsetenv((wchar_t*)L"TRIANGLE_BASE", (wchar_t*)L"1", 0); |
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ret=triangle_parallel(argv[0], argv[2]); |
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printf("it's %d\n", ret); |
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} |
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|
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printf("Farewell...\nPress a key"); |
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getchar(); |
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return ret; |
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} |