Source/Base/Threading/OSGBarrier.cpp

   1 /*---------------------------------------------------------------------------*\
   2  *                                OpenSG                                     *
   3  *                                                                           *
   4  *                                                                           *
   5  *             Copyright (C) 2000-2002 by the OpenSG Forum                   *
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  11 \*---------------------------------------------------------------------------*/
  12 /*---------------------------------------------------------------------------*\
  13  *                                License                                    *
  14  *                                                                           *
  15  * This library is free software; you can redistribute it and/or modify it   *
  16  * under the terms of the GNU Library General Public License as published    *
  17  * by the Free Software Foundation, version 2.                               *
  18  *                                                                           *
  19  * This library is distributed in the hope that it will be useful, but       *
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  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
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  27  *                                                                           *
  28 \*---------------------------------------------------------------------------*/
  29 /*---------------------------------------------------------------------------*\
  30  *                                Changes                                    *
  31  *                                                                           *
  32  *                                                                           *
  33  *                                                                           *
  34  *                                                                           *
  35  *                                                                           *
  36  *                                                                           *
  37 \*---------------------------------------------------------------------------*/
  38
  39 #include "OSGConfig.h"
  40
  41 #include <cstdlib>
  42 #include <cstdio>
  43
  44
  45 #include <iostream>
  46
  47 #include "OSGBarrier.h"
  48 #include "OSGBaseFunctions.h"
  49
  50 #include "OSGThreadManager.h"
  51
  52 OSG_USING_NAMESPACE
  53
  54 //---------------------------------------------------------------------------
  55 //  Class
  56 //---------------------------------------------------------------------------
  57
  58
  59 /*--------------------------- Constructors --------------------------------*/
  60
  61 BarrierCommonBase::BarrierCommonBase(const Char8  *szName,
  62                                            UInt32  uiId,
  63                                            bool    bGlobal) :
  64      Inherited   (szName,
  65                   bGlobal),
  66     _uiBarrierId (uiId   ),
  67     _uiNumWaitFor(      1)
  68 {
  69 }
  70
  71 /*---------------------------- Destructor ---------------------------------*/
  72
  73 BarrierCommonBase::~BarrierCommonBase(void)
  74 {
  75 }
  76
  77
  78
  79
  80 #if defined (OSG_USE_PTHREADS)
  81
  82 //---------------------------------------------------------------------------
  83 //  Class
  84 //---------------------------------------------------------------------------
  85
  86 /*--------------------------- Constructors --------------------------------*/
  87
  88 PThreadBarrierBase::PThreadBarrierBase(const Char8  *szName,
  89                                              UInt32  uiId,
  90                                              bool    bGlobal) :
  91      Inherited        (szName,
  92                        uiId,
  93                        bGlobal),
  94
  95     _pLockOne         (       ),
  96     _uiCount          (0      ),
  97     _uiCurrentCond    (0      )
  98 {
  99 }
 100
 101 /*---------------------------- Destructor ---------------------------------*/
 102
 103 PThreadBarrierBase::~PThreadBarrierBase(void)
 104 {
 105 }
 106
 107 /*--------------------------- Construction --------------------------------*/
 108
 109 bool PThreadBarrierBase::init(void)
 110 {
 111     pthread_cond_init (&(_pWakeupCondition[0]), NULL);
 112     pthread_cond_init (&(_pWakeupCondition[1]), NULL);
 113     pthread_mutex_init(&(_pLockOne),            NULL);
 114
 115     _uiCount       = 0;
 116     _uiCurrentCond = 0;
 117
 118     return true;
 119 }
 120
 121 /*---------------------------- Destruction --------------------------------*/
 122
 123 void PThreadBarrierBase::shutdown(void)
 124 {
 125     pthread_cond_destroy (&(_pWakeupCondition[0]));
 126     pthread_cond_destroy (&(_pWakeupCondition[1]));
 127     pthread_mutex_destroy(&(_pLockOne));
 128 }
 129
 130 #endif /* OSG_USE_PTHREADS */
 131
 132
 133
 134 #if defined (OSG_USE_SPROC)
 135
 136 //---------------------------------------------------------------------------
 137 //  Class
 138 //---------------------------------------------------------------------------
 139
 140 /*--------------------------- Constructors --------------------------------*/
 141
 142 SprocBarrierBase::SprocBarrierBase(const Char8  *szName,
 143                                          UInt32  uiId  ) :
 144      Inherited(szName, uiId),
 145
 146     _pBarrier (NULL)
 147 {
 148 }
 149
 150 /*---------------------------- Destructor ---------------------------------*/
 151
 152 SprocBarrierBase::~SprocBarrierBase(void)
 153 {
 154 }
 155
 156 /*--------------------------- Construction --------------------------------*/
 157
 158 bool SprocBarrierBase::init(void)
 159 {
 160     ThreadManager *pThreadManager = ThreadManager::the();
 161
 162     if(pThreadManager == NULL)
 163         return false;
 164
 165     if(pThreadManager->getArena() == NULL)
 166         return false;
 167
 168     _pBarrier = new_barrier(pThreadManager->getArena());
 169
 170     if(_pBarrier == NULL)
 171         return false;
 172
 173     init_barrier(_pBarrier);
 174
 175     return true;
 176 }
 177
 178 /*---------------------------- Destruction --------------------------------*/
 179
 180 void SprocBarrierBase::shutdown(void)
 181 {
 182     if(_pBarrier != NULL)
 183         free_barrier(_pBarrier);
 184 }
 185
 186
 187
 188 #endif /* OSG_USE_SPROC */
 189
 190
 191
 192 #if defined (OSG_USE_WINTHREADS)
 193
 194 //---------------------------------------------------------------------------
 195 //  Class
 196 //---------------------------------------------------------------------------
 197
 198 /*--------------------------- Constructors --------------------------------*/
 199
 200 WinThreadBarrierBase::WinThreadBarrierBase(const Char8  *szName,
 201                                                  UInt32  uiId,
 202                                                  bool    bGlobal) :
 203      Inherited    (szName, uiId, bGlobal),
 204
 205     _pMutex1      (NULL),
 206     _uiCount      (0   ),
 207     _uiCurrentCond(0   )
 208
 209 {
 210     _pBarrierSema[0] = NULL;
 211     _pBarrierSema[1] = NULL;
 212 }
 213
 214 /*---------------------------- Destructor ---------------------------------*/
 215
 216 WinThreadBarrierBase::~WinThreadBarrierBase(void)
 217 {
 218 }
 219
 220 /*--------------------------- Construction --------------------------------*/
 221
 222 bool WinThreadBarrierBase::init(void)
 223 {
 224     Char8 *pTmp = NULL;
 225
 226     if(_szName != NULL)
 227     {
 228         pTmp = new Char8[strlen(_szName) + 5];
 229
 230         sprintf(pTmp, "%sM1", _szName);
 231     }
 232
 233     _pMutex1 = CreateMutex(NULL,   // no security attributes
 234                            FALSE,  // initially not owned
 235                            pTmp);  // name of mutex
 236
 237     if(_pMutex1 == NULL)
 238     {
 239         fprintf(stderr, "Create mutex1 failed\n");
 240         return false;
 241     }
 242
 243     if(_szName != NULL)
 244     {
 245         sprintf(pTmp, "%sS1", _szName);
 246     }
 247
 248     _pBarrierSema[0] = CreateSemaphore(NULL, 0, 42, pTmp);
 249
 250     if(_pBarrierSema[0] == NULL)
 251     {
 252         CloseHandle(_pMutex1);
 253
 254         _pMutex1 = NULL;
 255
 256         fprintf(stderr, "Create semaphore 1 failed\n");
 257         return false;
 258     }
 259
 260     if(_szName != NULL)
 261     {
 262         sprintf(pTmp, "%sS2", _szName);
 263     }
 264
 265     _pBarrierSema[1] = CreateSemaphore(NULL, 0, 42, pTmp);
 266
 267     if(_pBarrierSema[1] == NULL)
 268     {
 269         CloseHandle(_pMutex1        );
 270         CloseHandle(_pBarrierSema[0]);
 271
 272         _pMutex1         = NULL;
 273         _pBarrierSema[0] = NULL;
 274
 275         fprintf(stderr, "Create semaphore 2 failed\n");
 276         return false;
 277     }
 278
 279     delete [] pTmp;
 280
 281     return true;
 282 }
 283
 284 /*---------------------------- Destruction --------------------------------*/
 285
 286 void WinThreadBarrierBase::shutdown(void)
 287 {
 288     if(_pMutex1 != NULL)
 289         CloseHandle(_pMutex1);
 290
 291     if(_pBarrierSema[0] != NULL)
 292         CloseHandle(_pBarrierSema[0]);
 293
 294     if(_pBarrierSema[1] != NULL)
 295         CloseHandle(_pBarrierSema[1]);
 296 }
 297
 298 #endif /* OSG_USE_WINTHREADS */
 299
 300
 301
 302
 303 //---------------------------------------------------------------------------
 304 //  Class
 305 //---------------------------------------------------------------------------
 306
 307 MPBarrierType Barrier::_type("OSGBarrier", "OSGMPBase", &Barrier::create);
 308
 309
 310 /*--------------------------- Constructors --------------------------------*/
 311
 312 Barrier::Barrier(const Char8  *szName,
 313                        UInt32  uiId,
 314                        bool    bGlobal) :
 315     Inherited(szName, uiId, bGlobal)
 316 {
 317 }
 318
 319 /*---------------------------- Destructor ---------------------------------*/
 320
 321 Barrier::~Barrier(void)
 322 {
 323     _bGlobal = false;
 324
 325     ThreadManager::the()->remove(this);
 326
 327     shutdown();
 328 }
 329
 330 /*-------------------------------- Get ------------------------------------*/
 331
 332 Barrier::ObjTransitPtr Barrier::get(const Char8 *szName, bool bGlobal)
 333 {
 334     return ThreadManager::the()->getBarrier(szName, bGlobal, "OSGBarrier");
 335 }
 336
 337 Barrier *Barrier::find(const Char8 *szName)
 338 {
 339     return ThreadManager::the()->findBarrier(szName);
 340 }
 341
 342
 343 /*------------------------------ Create -----------------------------------*/
 344
 345 Barrier *Barrier::create (const Char8  *szName,
 346                                 UInt32  uiId,
 347                                 bool    bGlobal)
 348 {
 349     Barrier *returnValue = NULL;
 350
 351     returnValue = new Barrier(szName, uiId, bGlobal);
 352
 353     if(returnValue->init() == false)
 354     {
 355         delete returnValue;
 356         returnValue = NULL;
 357    }
 358
 359     return returnValue;
 360 }