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annotate host/tools/Utils/common/Subprocess.h @ 283:f58bc1b2c2bc

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Reorganization of the host-side autoconfiscation support, and a couple of minor bug fixes. The main goal is to support per-package host-side software in addition to the generic host-side tools. For example, the synthetic target HAL and device driver packages can now have host subdirectories with support code.
author bartv
date Sun, 11 Aug 2002 21:40:50 +0000
parents 489eb5632bc3
children 74dbf4c3f2e1
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1 //####COPYRIGHTBEGIN####
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2 //
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3 // ----------------------------------------------------------------------------
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4 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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5 //
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6 // This program is part of the eCos host tools.
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7 //
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8 // This program is free software; you can redistribute it and/or modify it
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9 // under the terms of the GNU General Public License as published by the Free
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10 // Software Foundation; either version 2 of the License, or (at your option)
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11 // any later version.
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12 //
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13 // This program is distributed in the hope that it will be useful, but WITHOUT
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14 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 // more details.
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17 //
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18 // You should have received a copy of the GNU General Public License along with
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19 // this program; if not, write to the Free Software Foundation, Inc.,
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20 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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21 //
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22 // ----------------------------------------------------------------------------
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23 //
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24 //####COPYRIGHTEND####
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25 //===========================================================================
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26 //#####DESCRIPTIONBEGIN####
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27 //
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28 // Author(s): sdf
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29 // Contact(s): sdf
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30 // Date: 1998/08/11
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31 // Version: 0.01
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32 // Purpose:
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33 // Description: Interface of the subprocess clas
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34 // Requires:
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35 // Provides:
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36 // See also:
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37 // Known bugs:
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38 // Usage:
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39 //
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40 //####DESCRIPTIONEND####
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41 //
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42 //===========================================================================
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43 #ifndef _SUBPROCESS_H
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44 #define _SUBPROCESS_H
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45
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46 //===========================================================================
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47 // This class spawns subprocesses in a host-independent manner [almost]
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48 //===========================================================================
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49
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50 #include "eCosStd.h"
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51 #include "eCosThreadUtils.h"
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52 #include "Collections.h"
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53
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54 class CSubprocess {
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55
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56 public:
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57 void SetPath (LPCTSTR pszPath) { m_strPath=pszPath; }
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58 const String ErrorString() const;
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59
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60 // If bAutodelete is set, the class object will delete itself when the process is finished.
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61 // This must only be used if the class object is allocated on the heap.
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62 CSubprocess(bool bAutodelete=false);
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63 virtual ~CSubprocess();
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64
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65 void SetVerbose (bool b) { m_bVerbose=b; }
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66 void SetDirectory (LPCTSTR pszDir) { m_strDir=pszDir; }
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67
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68 // Various forms of the Run function. In each case under UNIX the Run results will always return true
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69 // (because we can't determine the result of the exec after fork). Under NT the result correctly represents
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70 // whether the process creation was successful
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71
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72 // Run (blocking) sending the output to strOutput.
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73 bool Run(String &strOutput,LPCTSTR pszCmd) { return Run(AppendFunc,&strOutput,pszCmd,true); }
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74
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75 // Run sending output to callback
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76 bool Run(LogFunc *pfnLog,void * pLogparam,LPCTSTR pszCmd,bool bBlock=true);
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77
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78 int Pid() const { return m_idProcess; } // returns process id (even when process is terminated)
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79
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80 // Get the CPU time of the process (and, optionally, its children)
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81 // Note that under UNIX this involves running ps and so may not be that cheap.
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82 Time CpuTime(bool bRecurse=true) const;
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83
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84 // Get the process exit code. This can be:
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85 // exit code of process (if terminated)
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86 // 0xffffffff (if process not yet run)
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87 // GetLastError result (if process could not be run)
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88 int GetExitCode() { return m_nExitCode; }
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89
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90 // Kill the process:
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91 bool Kill(bool bRecurse=true);
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92
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93 // Send some input to the process:
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94 void Send (LPCTSTR psz);
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95 // Close it (cause EOF to be read)
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96 void CloseInput();
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97 // Is the process running?
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98 bool ProcessAlive();
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99
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100 // Appendfunc can be used to achieve a non-blocking addition to some string
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101 static void CALLBACK AppendFunc(void *pParam,LPCTSTR psz) {
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102 ENTERCRITICAL;
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103 *((String *)pParam)+=psz;
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104 LEAVECRITICAL;
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105 }
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106
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107 // This function may be used to stop a process given some condition evaluated externally,
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108 // As long as the function returns true the process will be allowed to continue
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109 typedef bool (CALLBACK ContinuationFunc)(void *);
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110 void SetContinuationFunc(ContinuationFunc *pfnContinue,void *pParam){m_pfnContinue=pfnContinue;m_pContinuationFuncParam=pParam;}
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111
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112 // Wait for completion of the process, with optional timeout. If the timeout occurs without the process
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113 // having terminated, the result will be false.
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114 bool Wait(Duration dTimeout=0x7fffffff);
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115
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116 protected:
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117 String m_strPath;
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118
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119 static const String Name (int pid); // for debugging - only works under NT
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120
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121 ContinuationFunc *m_pfnContinue;
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122 void *m_pContinuationFuncParam;
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123 static bool CALLBACK DefaultContinuationFunc(void *) { return true; }
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124
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125 static void CALLBACK NullLogFunc(void *,LPCTSTR) {}
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126
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127 struct PInfo;
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128 struct PInfo {
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129 PInfo *pParent;
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130 #ifdef _WIN32
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131 __int64 tCreation;
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132 #endif
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133 Time tCpu;
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134 int PID;
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135 int PPID;
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136 bool IsChildOf(int pid) const;
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137 };
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138
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139 typedef std::vector<PInfo> PInfoArray;
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140
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141 static bool PSExtract(PInfoArray &arPinfo);
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142 static void SetParents(PInfoArray &arPinfo);
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143
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144 #ifdef _WIN32
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145 static DWORD GetPlatform();
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146 HANDLE m_hrPipe;
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147 HANDLE m_hwPipe;
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148 HANDLE m_hProcess; // This handle is "owned" by the ThreadFunc
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149 static HINSTANCE hInstLib1, hInstLib2;
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150 int m_nErr;
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151 #else
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152 int m_tty;
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153 String m_strCmd;
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154 #endif
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155
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156 static void CALLBACK SThreadFunc(void *pParam) { ((CSubprocess *)pParam)->ThreadFunc(); }
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157 void ThreadFunc();
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158 bool m_bAutoDelete;
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159 bool m_bThreadTerminated;
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160 bool m_bVerbose;
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161 int m_nExitCode;
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162 int m_idProcess;
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163 void *m_pLogparam;
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164 LogFunc *m_pfnLogfunc;
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165 bool m_bKillThread;
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166
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167 static const unsigned int PROCESS_KILL_EXIT_CODE;
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168 bool CreateProcess(LPCTSTR pszCmdline);
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169
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170 struct CygProcessInfo {
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171 int nPid;
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172 int nPpid;
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173 int nPgid;
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174 int nWinpid;
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175 };
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176
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177
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178 void Output(LPCTSTR psz);
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179 String m_strDir;
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180 };
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181
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182 #endif