author | herrick |
Fri, 07 Dec 2018 13:26:45 -0500 | |
branch | JDK-8200758-branch |
changeset 57064 | a7fdadf67a92 |
child 57099 | 9a85a7a076ad |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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#include "PosixPlatform.h" |
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|
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#ifdef POSIX |
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#include "PlatformString.h" |
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#include "FilePath.h" |
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#include "Helpers.h" |
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|
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#include <assert.h> |
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#include <stdbool.h> |
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#include <sys/types.h> |
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#include <unistd.h> |
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#include <sys/sysctl.h> |
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#include <sys/file.h> |
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#include <sys/stat.h> |
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#ifdef LINUX |
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#include <sys/wait.h> |
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#endif |
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#include <errno.h> |
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#include <limits.h> |
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#include <pwd.h> |
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#include <iostream> |
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#include <algorithm> |
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#include <dlfcn.h> |
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#include <signal.h> |
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PosixPlatform::PosixPlatform(void) { |
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} |
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PosixPlatform::~PosixPlatform(void) { |
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if (!SingleInstanceFile.empty()) { |
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unlink(SingleInstanceFile.c_str()); |
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} |
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} |
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TString PosixPlatform::GetTempDirectory() { |
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struct passwd* pw = getpwuid(getuid()); |
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TString homedir(pw->pw_dir); |
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homedir += getTmpDirString(); |
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if (!FilePath::DirectoryExists(homedir)) { |
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if (!FilePath::CreateDirectory(homedir, false)) { |
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homedir.clear(); |
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} |
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} |
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return homedir; |
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} |
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TString PosixPlatform::fixName(const TString& name) { |
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TString fixedName(name); |
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const TString chars("?:*<>/\\"); |
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for (TString::const_iterator it = chars.begin(); it != chars.end(); it++) { |
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fixedName.erase(std::remove(fixedName.begin(), |
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fixedName.end(), *it), fixedName.end()); |
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} |
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return fixedName; |
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} |
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// returns true if another instance is already running. |
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// if false, we need to continue regular launch. |
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bool PosixPlatform::CheckForSingleInstance(TString appName) { |
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TString tmpDir = GetTempDirectory(); |
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if (tmpDir.empty()) { |
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printf("Unable to check for single instance.\n"); |
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return false; |
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} |
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TString lockFile = tmpDir + "/" + fixName(appName); |
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SingleInstanceFile = lockFile; |
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int pid_file = open(lockFile.c_str(), O_CREAT | O_RDWR, 0666); |
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int rc = flock(pid_file, LOCK_EX | LOCK_NB); |
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if (rc) { |
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if (EWOULDBLOCK == errno) { |
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// another instance is running |
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pid_t pid = 0; |
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read(pid_file, (void*)&pid, sizeof(pid_t)); |
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printf("Another instance is running PID: %d\n", pid); |
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if (pid != 0) { |
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singleInstanceProcessId = pid; |
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SingleInstanceFile.clear(); |
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return true; |
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} |
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} else { |
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printf("Unable to check for single instance.\n"); |
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} |
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} else { |
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// It is the first instance. |
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pid_t pid = getpid(); |
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write(pid_file, (void*)&pid, sizeof(pid_t)); |
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} |
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return false; |
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} |
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MessageResponse PosixPlatform::ShowResponseMessage(TString title, |
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TString description) { |
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MessageResponse result = mrCancel; |
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printf("%s %s (Y/N)\n", PlatformString(title).toPlatformString(), |
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PlatformString(description).toPlatformString()); |
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128 |
fflush(stdout); |
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129 |
|
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130 |
std::string input; |
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131 |
std::cin >> input; |
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132 |
|
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133 |
if (input == "Y") { |
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134 |
result = mrOK; |
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135 |
} |
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136 |
|
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137 |
return result; |
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138 |
} |
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139 |
|
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140 |
void PosixPlatform::SetCurrentDirectory(TString Value) { |
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141 |
chdir(StringToFileSystemString(Value)); |
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142 |
} |
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143 |
|
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144 |
Module PosixPlatform::LoadLibrary(TString FileName) { |
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return dlopen(StringToFileSystemString(FileName), RTLD_LAZY); |
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146 |
} |
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147 |
|
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148 |
void PosixPlatform::FreeLibrary(Module AModule) { |
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149 |
dlclose(AModule); |
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150 |
} |
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151 |
|
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152 |
Procedure PosixPlatform::GetProcAddress(Module AModule, |
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153 |
std::string MethodName) { |
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154 |
return dlsym(AModule, PlatformString(MethodName)); |
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155 |
} |
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156 |
|
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157 |
std::vector<std::string> PosixPlatform::GetLibraryImports( |
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158 |
const TString FileName) { |
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159 |
std::vector<TString> result; |
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160 |
return result; |
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161 |
} |
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|
162 |
|
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163 |
std::vector<TString> PosixPlatform::FilterOutRuntimeDependenciesForPlatform( |
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164 |
std::vector<TString> Imports) { |
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165 |
std::vector<TString> result; |
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166 |
return result; |
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167 |
} |
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|
168 |
|
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169 |
Process* PosixPlatform::CreateProcess() { |
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170 |
return new PosixProcess(); |
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171 |
} |
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172 |
|
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173 |
PosixProcess::PosixProcess() : Process() { |
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174 |
FChildPID = 0; |
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175 |
FRunning = false; |
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176 |
FOutputHandle = 0; |
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177 |
FInputHandle = 0; |
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178 |
} |
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179 |
|
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180 |
PosixProcess::~PosixProcess() { |
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181 |
Terminate(); |
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182 |
} |
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|
183 |
|
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184 |
void PosixProcess::Cleanup() { |
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185 |
if (FOutputHandle != 0) { |
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186 |
close(FOutputHandle); |
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187 |
FOutputHandle = 0; |
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188 |
} |
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|
189 |
|
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190 |
if (FInputHandle != 0) { |
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|
191 |
close(FInputHandle); |
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192 |
FInputHandle = 0; |
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193 |
} |
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|
194 |
|
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195 |
#ifdef MAC |
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196 |
sigaction(SIGINT, &savintr, (struct sigaction *)0); |
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197 |
sigaction(SIGQUIT, &savequit, (struct sigaction *)0); |
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198 |
sigprocmask(SIG_SETMASK, &saveblock, (sigset_t *)0); |
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|
199 |
#endif //MAC |
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200 |
} |
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|
201 |
|
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202 |
bool PosixProcess::ReadOutput() { |
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|
203 |
bool result = false; |
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204 |
|
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205 |
if (FOutputHandle != 0 && IsRunning() == true) { |
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206 |
char buffer[4096] = {0}; |
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|
207 |
|
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208 |
ssize_t count = read(FOutputHandle, buffer, sizeof(buffer)); |
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|
209 |
|
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|
210 |
if (count == -1) { |
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|
211 |
if (errno == EINTR) { |
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|
212 |
// continue; |
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|
213 |
} else { |
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|
214 |
perror("read"); |
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|
215 |
exit(1); |
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|
216 |
} |
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|
217 |
} else if (count == 0) { |
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218 |
// break; |
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|
219 |
} else { |
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220 |
if (buffer[count - 1] == EOF) { |
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|
221 |
buffer[count - 1] = '\0'; |
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|
222 |
} |
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|
223 |
|
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224 |
std::list<TString> output = Helpers::StringToArray(buffer); |
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225 |
FOutput.splice(FOutput.end(), output, output.begin(), output.end()); |
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226 |
result = true; |
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|
227 |
} |
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|
228 |
} |
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|
229 |
|
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|
230 |
return false; |
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|
231 |
} |
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|
232 |
|
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233 |
bool PosixProcess::IsRunning() { |
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234 |
bool result = false; |
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|
235 |
|
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236 |
if (kill(FChildPID, 0) == 0) { |
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|
237 |
result = true; |
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|
238 |
} |
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|
239 |
|
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|
240 |
return result; |
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|
241 |
} |
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|
242 |
|
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243 |
bool PosixProcess::Terminate() { |
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|
244 |
bool result = false; |
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|
245 |
|
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246 |
if (IsRunning() == true && FRunning == true) { |
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|
247 |
FRunning = false; |
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248 |
Cleanup(); |
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249 |
int status = kill(FChildPID, SIGTERM); |
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|
250 |
|
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|
251 |
if (status == 0) { |
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|
252 |
result = true; |
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|
253 |
} else { |
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254 |
#ifdef DEBUG |
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|
255 |
if (errno == EINVAL) { |
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256 |
printf("Kill error: The value of the sig argument is an invalid or unsupported signal number."); |
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257 |
} else if (errno == EPERM) { |
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258 |
printf("Kill error: The process does not have permission to send the signal to any receiving process."); |
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259 |
} else if (errno == ESRCH) { |
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260 |
printf("Kill error: No process or process group can be found corresponding to that specified by pid."); |
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261 |
} |
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262 |
#endif // DEBUG |
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263 |
if (IsRunning() == true) { |
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264 |
status = kill(FChildPID, SIGKILL); |
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|
265 |
|
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|
266 |
if (status == 0) { |
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267 |
result = true; |
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268 |
} |
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269 |
} |
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270 |
} |
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271 |
} |
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|
272 |
|
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273 |
return result; |
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274 |
} |
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275 |
|
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276 |
#define PIPE_READ 0 |
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277 |
#define PIPE_WRITE 1 |
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|
278 |
|
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279 |
bool PosixProcess::Execute(const TString Application, |
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280 |
const std::vector<TString> Arguments, bool AWait) { |
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281 |
bool result = false; |
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|
282 |
|
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|
283 |
if (FRunning == false) { |
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284 |
FRunning = true; |
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|
285 |
|
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286 |
int handles[2]; |
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|
287 |
|
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288 |
if (pipe(handles) == -1) { |
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|
289 |
return false; |
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290 |
} |
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|
291 |
|
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292 |
struct sigaction sa; |
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293 |
sa.sa_handler = SIG_IGN; |
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|
294 |
sigemptyset(&sa.sa_mask); |
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|
295 |
sa.sa_flags = 0; |
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|
296 |
#ifdef MAC |
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297 |
sigemptyset(&savintr.sa_mask); |
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|
298 |
sigemptyset(&savequit.sa_mask); |
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299 |
sigaction(SIGINT, &sa, &savintr); |
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300 |
sigaction(SIGQUIT, &sa, &savequit); |
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301 |
sigaddset(&sa.sa_mask, SIGCHLD); |
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302 |
sigprocmask(SIG_BLOCK, &sa.sa_mask, &saveblock); |
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|
303 |
#endif // MAC |
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|
304 |
FChildPID = fork(); |
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|
305 |
|
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306 |
// PID returned by vfork is 0 for the child process and the |
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307 |
// PID of the child process for the parent. |
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|
308 |
if (FChildPID == -1) { |
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|
309 |
// Error |
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|
310 |
TString message = PlatformString::Format( |
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|
311 |
_T("Error: Unable to create process %s"), |
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|
312 |
Application.data()); |
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|
313 |
throw Exception(message); |
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|
314 |
} |
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|
315 |
else if (FChildPID == 0) { |
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|
316 |
Cleanup(); |
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|
317 |
TString command = Application; |
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|
318 |
|
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|
319 |
for (std::vector<TString>::const_iterator iterator = |
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|
320 |
Arguments.begin(); iterator != Arguments.end(); |
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|
321 |
iterator++) { |
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|
322 |
command += TString(_T(" ")) + *iterator; |
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|
323 |
} |
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|
324 |
#ifdef DEBUG |
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|
325 |
printf("%s\n", command.data()); |
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|
326 |
#endif // DEBUG |
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|
327 |
|
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|
328 |
dup2(handles[PIPE_READ], STDIN_FILENO); |
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|
329 |
dup2(handles[PIPE_WRITE], STDOUT_FILENO); |
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|
330 |
|
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|
331 |
close(handles[PIPE_READ]); |
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|
332 |
close(handles[PIPE_WRITE]); |
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|
333 |
|
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|
334 |
execl("/bin/sh", "sh", "-c", command.data(), (char *)0); |
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|
335 |
|
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|
336 |
_exit(127); |
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|
337 |
} else { |
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|
338 |
FOutputHandle = handles[PIPE_READ]; |
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|
339 |
FInputHandle = handles[PIPE_WRITE]; |
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|
340 |
|
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|
341 |
if (AWait == true) { |
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|
342 |
ReadOutput(); |
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|
343 |
Wait(); |
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|
344 |
Cleanup(); |
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|
345 |
FRunning = false; |
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|
346 |
result = true; |
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|
347 |
} |
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|
348 |
else { |
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|
349 |
result = true; |
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|
350 |
} |
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|
351 |
} |
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|
352 |
} |
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|
353 |
|
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|
354 |
return result; |
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|
355 |
} |
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|
356 |
|
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|
357 |
bool PosixProcess::Wait() { |
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|
358 |
bool result = false; |
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|
359 |
|
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|
360 |
int status = 0; |
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|
361 |
pid_t wpid = 0; |
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herrick
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|
362 |
|
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herrick
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|
363 |
#ifdef LINUX |
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|
364 |
wpid = wait(&status); |
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|
365 |
#endif |
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|
366 |
#ifdef MAC |
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|
367 |
wpid = wait(&status); |
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|
368 |
#endif |
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|
369 |
|
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|
370 |
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { |
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|
371 |
if (errno != EINTR){ |
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herrick
parents:
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|
372 |
status = -1; |
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herrick
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|
373 |
} |
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herrick
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|
374 |
} |
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herrick
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|
375 |
|
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herrick
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|
376 |
#ifdef DEBUG |
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|
377 |
if (WIFEXITED(status)) { |
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|
378 |
printf("child exited, status=%d\n", WEXITSTATUS(status)); |
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|
379 |
} else if (WIFSIGNALED(status)) { |
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herrick
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|
380 |
printf("child killed (signal %d)\n", WTERMSIG(status)); |
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herrick
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|
381 |
} else if (WIFSTOPPED(status)) { |
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herrick
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|
382 |
printf("child stopped (signal %d)\n", WSTOPSIG(status)); |
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herrick
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|
383 |
#ifdef WIFCONTINUED // Not all implementations support this |
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|
384 |
} else if (WIFCONTINUED(status)) { |
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herrick
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|
385 |
printf("child continued\n"); |
a7fdadf67a92
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herrick
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changeset
|
386 |
#endif // WIFCONTINUED |
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herrick
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|
387 |
} else { // Non-standard case -- may never happen |
a7fdadf67a92
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herrick
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|
388 |
printf("Unexpected status (0x%x)\n", status); |
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herrick
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|
389 |
} |
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herrick
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changeset
|
390 |
#endif // DEBUG |
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391 |
|
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392 |
if (wpid != -1) { |
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393 |
result = true; |
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394 |
} |
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|
395 |
|
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396 |
return result; |
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397 |
} |
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398 |
|
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399 |
TProcessID PosixProcess::GetProcessID() { |
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400 |
return FChildPID; |
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401 |
} |
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402 |
|
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403 |
void PosixProcess::SetInput(TString Value) { |
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404 |
if (FInputHandle != 0) { |
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write(FInputHandle, Value.data(), Value.size()); |
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} |
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407 |
} |
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408 |
|
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409 |
std::list<TString> PosixProcess::GetOutput() { |
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410 |
ReadOutput(); |
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return Process::GetOutput(); |
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412 |
} |
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413 |
|
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414 |
#endif // POSIX |