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annotate host/tools/Utils/common/eCosThreadUtils.h @ 76:435cced73e2f ecos-v1_3_1-release

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eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
author jlarmour
date Tue, 28 Mar 2000 14:10:45 +0000
parents
children 6736c52df507
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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 //
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27 // eCosThreadUtils.h
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28 //
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29 //
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30 //=================================================================
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31 //=================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): sdf
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35 // Contributors: sdf
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36 // Date: 1999-04-01
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37 // Description: Threading-related utiltities
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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 #ifndef _ECOSTHREADUTILS_H
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43 #define _ECOSTHREADUTILS_H
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44 #include "eCosStd.h"
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45 #include "Collections.h"
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46 #define ENTERCRITICAL {CeCosThreadUtils::CS c
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47 #define LEAVECRITICAL }
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48
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49 #ifndef _WIN32 // UNIX
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50 #ifndef NO_THREADS
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51 #include <pthread.h>
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52 #endif
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53 #endif
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54
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55 class CeCosThreadUtils {
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56 public:
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57 #ifdef _WIN32
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58 static int CALLBACK FilterFunction(LPEXCEPTION_POINTERS p);
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59 typedef DWORD THREAD_ID;
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60 #else // UNIX
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61 #ifndef NO_THREADS
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62 typedef int THREAD_ID;
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63 #else
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64 typedef pthread_t THREAD_ID;
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65 #endif
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66 #endif
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67 static THREAD_ID GetThreadId();
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68
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69 class CS{
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70 // p and q routines (process-local recursive mutexes)
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71 #ifdef _WIN32
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72 static CRITICAL_SECTION cs;
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73 static bool bCSInitialized;
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74 #else // UNIX
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75 #ifndef NO_THREADS
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76 // Static recursive mutex for unix critical section
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77 static pthread_mutex_t cs;
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78 #endif
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79 #endif
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80
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81 public:
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82
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83 static int m_nCriticalSectionLock;
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84 static THREAD_ID nCSOwner;
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85
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86 static int AtomicIncrement (int &n); // return old value
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87 static int AtomicDecrement (int &n); // return old value
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88 CS();
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89 virtual ~CS();
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90 };
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91
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92 // Wait for this boolean to become true, subject to the given timeout
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93 static bool WaitFor (bool &b, int dTimeout=0x7fffffff);
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94
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95 ///////////////////////////////////////////////////////////////////////////
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96 // Define the characteristics of a callback procedure:
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97
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98 // A callback procedure:
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99 typedef void (CALLBACK CallbackProc)(void *);
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100
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101 // Run a thread: pThreadFunc is the entry point (passed pParam). No notification of completion.
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102 static bool RunThread(CallbackProc *pThreadFunc, void *pParam, LPCTSTR pszName=_T("")) { return RunThread(pThreadFunc,pParam,0,0,pszName); }
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103 // Run a thread, setting the bool on completion
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104 static bool RunThread(CallbackProc *pThreadFunc, void *pParam, bool *pb, LPCTSTR pszName=_T("")) { *pb=false; return RunThread(pThreadFunc,pParam,0,pb,pszName); }
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105 // Run a thread, calling the callback on completion
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106 static bool RunThread(CallbackProc *pThreadFunc, void *pParam, CallbackProc *pCompletionFunc, LPCTSTR pszName=_T("")) { return RunThread(pThreadFunc,pParam,pCompletionFunc,pParam,pszName); }
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107
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108 protected:
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109
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110 // If m_pProc is non-zero then it is called
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111 // If m_pProc is 0 and m_pParam is non-0 then the callback sets the boolean whose address is held in m_pParam
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112 // If m_pProc is 0 and m_pParam is 0 then the callback is "blocking"
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113 //bool IsBlocking() const { return 0==m_pProc && 0==m_pParam; }
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114
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115 // Run a thread: arbitrary callbcak
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116 static bool RunThread(CallbackProc *pThreadFunc, void *pParam, CallbackProc *pCompletionFunc, void *pCompletionParam, LPCTSTR pszName);
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117
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118 struct ThreadInfo {
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119 CallbackProc *pThreadFunc;
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120 void *pThreadParam;
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121 CallbackProc *pCompletionFunc; // Call this function
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122 void *pCompletionParam; // With this parameter
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123 String strName;
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124 ThreadInfo (CallbackProc *_pThreadFunc,void *_pThreadParam,CallbackProc *_pCompletionFunc,void *_pCompletionParam,LPCTSTR pszName) :
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125 pThreadFunc(_pThreadFunc),
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126 pThreadParam(_pThreadParam),
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127 pCompletionFunc(_pCompletionFunc),
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128 pCompletionParam(_pCompletionParam),
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129 strName(pszName){}
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130 };
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131
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132 // Result type of the thread function
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133 #ifdef _WIN32
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134 typedef unsigned long THREADFUNC;
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135 #else // UNIX
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136 typedef void * THREADFUNC;
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137 #endif
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138 static THREADFUNC CALLBACK SThreadFunc (void *pParam);
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139
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140 };
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141
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142 #endif