19682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* 29682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL - Simple DirectMedia Layer 39682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Copyright (C) 1997-2012 Sam Lantinga 49682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 59682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is free software; you can redistribute it and/or 69682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall modify it under the terms of the GNU Library General Public 79682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License as published by the Free Software Foundation; either 89682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall version 2 of the License, or (at your option) any later version. 99682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is distributed in the hope that it will be useful, 119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall but WITHOUT ANY WARRANTY; without even the implied warranty of 129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Library General Public License for more details. 149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall You should have received a copy of the GNU Library General Public 169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License along with this library; if not, write to the Free 179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Sam Lantinga 209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall slouken@devolution.com 219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall*/ 229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* 249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_sysmutex.cpp 259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Epoc version by Markus Mertama (w@iki.fi) 279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall*/ 289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef SAVE_RCSID 319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic char rcsid = 329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall "@(#) $Id: SDL_sysmutex.c,v 1.1.2.3 2000/06/22 15:25:23 hercules Exp $"; 339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Mutex functions using the Win32 API */ 369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall//#include <stdio.h> 389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall//#include <stdlib.h> 399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include <e32std.h> 419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "epoc_sdl.h" 439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_error.h" 459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_mutex.h" 469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef EKA2 //??? 499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstruct SDL_mutex 509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { 519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall TInt handle; 529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall }; 539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#else 549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstruct _SDL_mutex 559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { 569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall TInt handle; 579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall }; 589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern TInt CreateUnique(TInt (*aFunc)(const TDesC& aName, TAny*, TAny*), TAny*, TAny*); 619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse HallTInt NewMutex(const TDesC& aName, TAny* aPtr1, TAny*) 639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { 649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return ((RMutex*)aPtr1)->CreateGlobal(aName); 659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid DeleteMutex(TAny* aMutex) 689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { 699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_DestroyMutex ((SDL_mutex*) aMutex); 709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Create a mutex */ 739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse HallSDL_mutex *SDL_CreateMutex(void) 749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall RMutex rmutex; 769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall TInt status = CreateUnique(NewMutex, &rmutex, NULL); 789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if(status != KErrNone) 799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { 809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Couldn't create mutex"); 819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_mutex* mutex = new /*(ELeave)*/ SDL_mutex; 839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall mutex->handle = rmutex.Handle(); 849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall EpocSdlEnv::AppendCleanupItem(TSdlCleanupItem(DeleteMutex, mutex)); 859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(mutex); 869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Free the mutex */ 899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_DestroyMutex(SDL_mutex *mutex) 909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( mutex ) 929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { 939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall RMutex rmutex; 949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall rmutex.SetHandle(mutex->handle); 959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if(rmutex.IsHeld()) 969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { 979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall rmutex.Signal(); 989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall rmutex.Close(); 1009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall EpocSdlEnv::RemoveCleanupItem(mutex); 1019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall delete(mutex); 1029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall mutex = NULL; 1039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Lock the mutex */ 1079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint SDL_mutexP(SDL_mutex *mutex) 1089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( mutex == NULL ) { 1109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Passed a NULL mutex"); 1119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return -1; 1129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall RMutex rmutex; 1149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall rmutex.SetHandle(mutex->handle); 1159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall rmutex.Wait(); 1169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 1179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Unlock the mutex */ 1209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint SDL_mutexV(SDL_mutex *mutex) 1219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( mutex == NULL ) { 1239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Passed a NULL mutex"); 1249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return -1; 1259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall RMutex rmutex; 1279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall rmutex.SetHandle(mutex->handle); 1289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall rmutex.Signal(); 1299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 1309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 131