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annotate host/tools/Utils/common/Subprocess.h @ 3283:355bcd2cec54

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* common/Subprocess.cpp: Silence signed/unsigned compiler warning with recent GCC. [ Bugzilla 1001955 ]
author jld
date Thu, 13 Mar 2014 15:31:34 +0000
parents 74dbf4c3f2e1
children
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1 // ####ECOSHOSTGPLCOPYRIGHTBEGIN####
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2 // -------------------------------------------
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3 // This file is part of the eCos host tools.
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4 // Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
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5 //
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6 // This program is free software; you can redistribute it and/or modify
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7 // it under the terms of the GNU General Public License as published by
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8 // the Free Software Foundation; either version 2 or (at your option) any
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9 // later version.
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10 //
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11 // This program is distributed in the hope that it will be useful, but
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12 // WITHOUT ANY WARRANTY; without even the implied warranty of
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13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 // General Public License for more details.
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15 //
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16 // You should have received a copy of the GNU General Public License
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17 // along with this program; if not, write to the
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18 // Free Software Foundation, Inc., 51 Franklin Street,
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19 // Fifth Floor, Boston, MA 02110-1301, USA.
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20 // -------------------------------------------
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21 // ####ECOSHOSTGPLCOPYRIGHTEND####
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22 //===========================================================================
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23 //#####DESCRIPTIONBEGIN####
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24 //
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25 // Author(s): sdf
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26 // Contact(s): sdf
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27 // Date: 1998/08/11
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28 // Version: 0.01
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29 // Purpose:
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30 // Description: Interface of the subprocess clas
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31 // Requires:
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32 // Provides:
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33 // See also:
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34 // Known bugs:
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35 // Usage:
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36 //
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37 //####DESCRIPTIONEND####
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38 //
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39 //===========================================================================
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40 #ifndef _SUBPROCESS_H
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41 #define _SUBPROCESS_H
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42
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43 //===========================================================================
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44 // This class spawns subprocesses in a host-independent manner [almost]
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45 //===========================================================================
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46
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47 #include "eCosStd.h"
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48 #include "eCosThreadUtils.h"
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49 #include "Collections.h"
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50
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51 class CSubprocess {
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52
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53 public:
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54 void SetPath (LPCTSTR pszPath) { m_strPath=pszPath; }
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55 const String ErrorString() const;
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56
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57 // If bAutodelete is set, the class object will delete itself when the process is finished.
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58 // This must only be used if the class object is allocated on the heap.
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59 CSubprocess(bool bAutodelete=false);
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60 virtual ~CSubprocess();
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61
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62 void SetVerbose (bool b) { m_bVerbose=b; }
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63 void SetDirectory (LPCTSTR pszDir) { m_strDir=pszDir; }
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64
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65 // Various forms of the Run function. In each case under UNIX the Run results will always return true
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66 // (because we can't determine the result of the exec after fork). Under NT the result correctly represents
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67 // whether the process creation was successful
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68
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69 // Run (blocking) sending the output to strOutput.
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70 bool Run(String &strOutput,LPCTSTR pszCmd) { return Run(AppendFunc,&strOutput,pszCmd,true); }
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71
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72 // Run sending output to callback
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73 bool Run(LogFunc *pfnLog,void * pLogparam,LPCTSTR pszCmd,bool bBlock=true);
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74
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75 int Pid() const { return m_idProcess; } // returns process id (even when process is terminated)
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76
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77 // Get the CPU time of the process (and, optionally, its children)
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78 // Note that under UNIX this involves running ps and so may not be that cheap.
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79 Time CpuTime(bool bRecurse=true) const;
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80
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81 // Get the process exit code. This can be:
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82 // exit code of process (if terminated)
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83 // 0xffffffff (if process not yet run)
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84 // GetLastError result (if process could not be run)
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85 int GetExitCode() { return m_nExitCode; }
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86
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87 // Kill the process:
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88 bool Kill(bool bRecurse=true);
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89
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90 // Send some input to the process:
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91 void Send (LPCTSTR psz);
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92 // Close it (cause EOF to be read)
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93 void CloseInput();
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94 // Is the process running?
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95 bool ProcessAlive();
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96
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97 // Appendfunc can be used to achieve a non-blocking addition to some string
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98 static void CALLBACK AppendFunc(void *pParam,LPCTSTR psz) {
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99 ENTERCRITICAL;
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100 *((String *)pParam)+=psz;
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101 LEAVECRITICAL;
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102 }
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103
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104 // This function may be used to stop a process given some condition evaluated externally,
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105 // As long as the function returns true the process will be allowed to continue
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106 typedef bool (CALLBACK ContinuationFunc)(void *);
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107 void SetContinuationFunc(ContinuationFunc *pfnContinue,void *pParam){m_pfnContinue=pfnContinue;m_pContinuationFuncParam=pParam;}
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108
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109 // Wait for completion of the process, with optional timeout. If the timeout occurs without the process
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110 // having terminated, the result will be false.
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111 bool Wait(Duration dTimeout=0x7fffffff);
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112
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113 protected:
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114 String m_strPath;
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115
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116 static const String Name (int pid); // for debugging - only works under NT
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117
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118 ContinuationFunc *m_pfnContinue;
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119 void *m_pContinuationFuncParam;
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120 static bool CALLBACK DefaultContinuationFunc(void *) { return true; }
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121
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122 static void CALLBACK NullLogFunc(void *,LPCTSTR) {}
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123
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124 struct PInfo;
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125 struct PInfo {
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126 PInfo *pParent;
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127 #ifdef _WIN32
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128 __int64 tCreation;
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129 #endif
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130 Time tCpu;
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131 int PID;
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132 int PPID;
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133 bool IsChildOf(int pid) const;
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134 };
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135
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136 typedef std::vector<PInfo> PInfoArray;
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137
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138 static bool PSExtract(PInfoArray &arPinfo);
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139 static void SetParents(PInfoArray &arPinfo);
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140
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141 #ifdef _WIN32
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142 static DWORD GetPlatform();
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143 HANDLE m_hrPipe;
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144 HANDLE m_hwPipe;
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145 HANDLE m_hProcess; // This handle is "owned" by the ThreadFunc
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146 static HINSTANCE hInstLib1, hInstLib2;
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147 int m_nErr;
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148 #else
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149 int m_tty;
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150 String m_strCmd;
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151 #endif
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152
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153 static void CALLBACK SThreadFunc(void *pParam) { ((CSubprocess *)pParam)->ThreadFunc(); }
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154 void ThreadFunc();
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155 bool m_bAutoDelete;
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156 bool m_bThreadTerminated;
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157 bool m_bVerbose;
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158 int m_nExitCode;
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159 int m_idProcess;
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160 void *m_pLogparam;
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161 LogFunc *m_pfnLogfunc;
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162 bool m_bKillThread;
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163
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164 static const unsigned int PROCESS_KILL_EXIT_CODE;
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165 bool CreateProcess(LPCTSTR pszCmdline);
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166
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167 struct CygProcessInfo {
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168 int nPid;
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169 int nPpid;
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170 int nPgid;
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171 int nWinpid;
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172 };
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173
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174
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175 void Output(LPCTSTR psz);
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176 String m_strDir;
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177 };
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178
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179 #endif