diff options
Diffstat (limited to 'code/macosx/macosx_glsmp_mutex.m')
| -rw-r--r-- | code/macosx/macosx_glsmp_mutex.m | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/code/macosx/macosx_glsmp_mutex.m b/code/macosx/macosx_glsmp_mutex.m deleted file mode 100644 index 3fe03d8..0000000 --- a/code/macosx/macosx_glsmp_mutex.m +++ /dev/null @@ -1,176 +0,0 @@ -/* -=========================================================================== -Copyright (C) 1999-2005 Id Software, Inc. - -This file is part of Quake III Arena source code. - -Quake III Arena source code is free software; you can redistribute it -and/or modify it under the terms of the GNU General Public License as -published by the Free Software Foundation; either version 2 of the License, -or (at your option) any later version. - -Quake III Arena source code is distributed in the hope that it will be -useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with Quake III Arena source code; if not, write to the Free Software -Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -=========================================================================== -*/ -#import "macosx_glimp.h" - -#include "tr_local.h" -#import "macosx_local.h" -#import "macosx_display.h" - -#import <AppKit/AppKit.h> -#import <Foundation/Foundation.h> -#import <pthread.h> - -// -// The main Q3 SMP API -// - -static pthread_mutex_t smpMutex; -static pthread_cond_t mainThreadCondition; -static pthread_cond_t renderThreadCondition; - -static volatile qboolean smpDataChanged; -static volatile void *smpData; - - -static void *GLimp_RenderThreadWrapper(void *arg) -{ - Com_Printf("Render thread starting\n"); - - ((void (*)())arg)(); - -#ifndef USE_CGLMACROS - // Unbind the context before we die - OSX_GLContextClearCurrent(); -#endif - - Com_Printf("Render thread terminating\n"); - - return arg; -} - -qboolean GLimp_SpawnRenderThread( void (*function)( void ) ) -{ - pthread_t renderThread; - int rc; - - pthread_mutex_init(&smpMutex, NULL); - pthread_cond_init(&mainThreadCondition, NULL); - pthread_cond_init(&renderThreadCondition, NULL); - - rc = pthread_create(&renderThread, NULL, GLimp_RenderThreadWrapper, function); - if (rc) { - ri.Printf(PRINT_ALL, "pthread_create returned %d: %s", rc, strerror(rc)); - return qfalse; - } else { - rc = pthread_detach(renderThread); - if (rc) { - ri.Printf(PRINT_ALL, "pthread_detach returned %d: %s", rc, strerror(rc)); - } - } - - return qtrue; -} - -// Called in the rendering thread to wait until a command buffer is ready. -// The command buffer returned might be NULL, indicating that the rendering thread should exit. -void *GLimp_RendererSleep(void) -{ - volatile void *data; - - GLSTAMP("GLimp_RendererSleep start", 0); - -#ifndef USE_CGLMACROS - // Clear the current context while we sleep so the main thread can access it - OSX_GLContextClearCurrent(); -#endif - - pthread_mutex_lock(&smpMutex); { - // Clear out any data we had and signal the main thread that we are no longer busy - smpData = NULL; - smpDataChanged = qfalse; - pthread_cond_signal(&mainThreadCondition); - - // Wait until we get something new to work on - while (!smpDataChanged) - pthread_cond_wait(&renderThreadCondition, &smpMutex); - - // Record the data (if any). - data = smpData; - } pthread_mutex_unlock(&smpMutex); - -#ifndef USE_CGLMACROS - // We are going to render a frame... retake the context - OSX_GLContextSetCurrent(); -#endif - - GLSTAMP("GLimp_RendererSleep end", 0); - - return (void *)data; -} - -// Called from the main thread to wait until the rendering thread is done with the command buffer. -void GLimp_FrontEndSleep(void) -{ - GLSTAMP("GLimp_FrontEndSleep start", 0); - - pthread_mutex_lock(&smpMutex); { - while (smpData) { -#if 0 - struct timespec ts; - int result; - - ts.tv_sec = 1; - ts.tv_nsec = 0; - result = pthread_cond_timedwait_relative_np(&mainThreadCondition, &smpMutex, &ts); - if (result) { - Com_Printf("GLimp_FrontEndSleep timed out. Probably due to R_SyncRenderThread called due to Com_Error being called\n"); - break; - } -#else - pthread_cond_wait(&mainThreadCondition, &smpMutex); -#endif - } - } pthread_mutex_unlock(&smpMutex); - - -#ifndef USE_CGLMACROS - // We are done waiting for the background thread, take the current context back. - OSX_GLContextSetCurrent(); -#endif - - GLSTAMP("GLimp_FrontEndSleep end", 0); -} - -// This is called in the main thread to issue another command -// buffer to the rendering thread. This is always called AFTER -// GLimp_FrontEndSleep, so we know that there is no command -// pending in 'smpData'. -void GLimp_WakeRenderer( void *data ) -{ - GLSTAMP("GLimp_WakeRenderer start", data); - -#ifndef USE_CGLMACROS - // We want the background thread to draw stuff. Give up the current context - OSX_GLContextClearCurrent(); -#endif - - pthread_mutex_lock(&smpMutex); { - // Store the new data pointer and wake up the rendering thread - assert(smpData == NULL); - smpData = data; - smpDataChanged = qtrue; - pthread_cond_signal(&renderThreadCondition); - } pthread_mutex_unlock(&smpMutex); - - GLSTAMP("GLimp_WakeRenderer end", data); -} - |