threadwin.cc

   1 /*
   2     Copyright 2004-2005 Chris Tallon
   3
   4     This file is part of VOMP.
   5
   6     VOMP is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     VOMP is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with VOMP; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21 #include "threadwin.h"
  22
  23 ThreadWin::~ThreadWin()
  24 {
  25     CloseHandle(pthread);
  26     CloseHandle(threadCond);
  27     CloseHandle(threadCondMutex);
  28 }
  29
  30
  31 // Undeclared functions, only for use in this file to start the thread
  32 DWORD WINAPI threadInternalStart(void *arg)
  33 {
  34   Thread *t = (Thread *)arg;
  35   t->threadInternalStart2();
  36   return 0;
  37 }
  38
  39 int ThreadWin::threadStart()
  40 {
  41   threadCond = CreateEvent(NULL,/*FALSE*/TRUE,FALSE,NULL);
  42   if (threadCond == NULL) return 0;
  43   threadCondMutex = CreateMutex(NULL,FALSE,NULL);
  44   if (threadCondMutex == NULL)
  45   {
  46     CloseHandle(threadCond);
  47     return 0;
  48   }
  49
  50   threadActive = 1;
  51
  52   pthread = CreateThread(NULL, 0, threadInternalStart, (void*)this,0, &threadId);
  53   if (pthread == NULL)
  54   {
  55     CloseHandle(threadCond);
  56     CloseHandle(threadCondMutex);
  57     return 0;
  58   }
  59   return 1;
  60 }
  61
  62 void ThreadWin::threadStop()
  63 {
  64   threadActive = 0;
  65   // Signal thread here in case it's waiting
  66   threadSignal();
  67   WaitForSingleObject(pthread, INFINITE);
  68   this->threadPostStopCleanup();
  69 }
  70
  71 void ThreadWin::threadCancel()
  72 {
  73   threadActive = 0;
  74   //TerminateThread(pthread, 0);
  75   threadSignalNoLock();
  76   WaitForSingleObject(pthread, INFINITE);
  77   this->threadPostStopCleanup();
  78 }
  79
  80 void ThreadWin::threadCheckExit()
  81 {
  82   if (!threadActive) ExitThread(NULL);
  83 }
  84
  85 void ThreadWin::threadLock()
  86 {
  87   WaitForSingleObject(threadCondMutex, INFINITE);
  88 }
  89
  90 void ThreadWin::threadUnlock()
  91 {
  92   ReleaseMutex(threadCondMutex);
  93 }
  94
  95 void ThreadWin::threadSignal()
  96 {
  97   WaitForSingleObject(threadCondMutex, INFINITE);
  98  // PulseEvent(threadCond);
  99   SetEvent(threadCond);
 100   ReleaseMutex(threadCondMutex);
 101 }
 102
 103 void ThreadWin::threadSignalNoLock()
 104 {
 105 //    PulseEvent(threadCond);
 106         SetEvent(threadCond);
 107 }
 108
 109 void ThreadWin::threadWaitForSignal()
 110 {
 111   threadUnlock();
 112   WaitForSingleObject(threadCond,INFINITE);
 113   ResetEvent(threadCond);
 114   threadLock();
 115 }
 116
 117 void ThreadWin::threadWaitForSignalTimed(struct timespec* ts)
 118 {
 119         threadUnlock();
 120         HANDLE handles[2] ={threadCond, NULL};
 121         LARGE_INTEGER duration;
 122         duration.QuadPart=(((LONGLONG)ts->tv_sec)*1000LL*1000LL*10LL+((LONGLONG)ts->tv_nsec)/100LL)+WINDOWS_TIME_BASE_OFFSET;
 123         SYSTEMTIME debug;
 124         FILETIME debugfile;
 125         GetSystemTime(&debug);
 126         SystemTimeToFileTime(&debug,&debugfile);
 127
 128         handles[1]=CreateWaitableTimer(NULL,TRUE,NULL);
 129         SetWaitableTimer(handles[1], &duration, 0, NULL, NULL, 0);
 130         WaitForMultipleObjects(2,handles,FALSE,INFINITE);
 131         ResetEvent(threadCond);
 132         CloseHandle(handles[1]);
 133         threadLock();
 134 }
 135
 136 void ThreadWin::threadSetKillable()
 137 {
 138   //WIN32:Ignore or use a separate Event Object to simulate this
 139 }
 140
 141 void ThreadWin::threadSuicide()
 142 {
 143 /*  if(!pthread_detach(pthread_self()))
 144   {
 145     MILLISLEEP(1000);
 146     if(!pthread_detach(pthread_self()))
 147     {
 148       MILLISLEEP(1000);
 149       pthread_detach(pthread_self());
 150     }
 151   }
 152 */
 153
 154     ExitThread(0);
 155 }
 156
 157 unsigned int ThreadWin::getThreadID()
 158 {
 159     return threadId;
 160 }
 161
 162 unsigned int ThreadWin::thisThreadID() // returns the ID of the calling thread
 163 {
 164   return GetCurrentThreadId();
 165 }