diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/thread/amigaos/SDL_syssem.c')
-rw-r--r-- | distrib/sdl-1.2.12/src/thread/amigaos/SDL_syssem.c | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/distrib/sdl-1.2.12/src/thread/amigaos/SDL_syssem.c b/distrib/sdl-1.2.12/src/thread/amigaos/SDL_syssem.c deleted file mode 100644 index a31a213..0000000 --- a/distrib/sdl-1.2.12/src/thread/amigaos/SDL_syssem.c +++ /dev/null @@ -1,148 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2006 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Sam Lantinga - slouken@libsdl.org -*/ -#include "SDL_config.h" - -/* An implementation of semaphores using mutexes and condition variables */ - -#include "SDL_thread.h" -#include "SDL_systhread_c.h" - - -struct SDL_semaphore -{ - struct SignalSemaphore Sem; -}; - -#undef D - -#define D(x) - -SDL_sem *SDL_CreateSemaphore(Uint32 initial_value) -{ - SDL_sem *sem; - - sem = (SDL_sem *)SDL_malloc(sizeof(*sem)); - - if ( ! sem ) { - SDL_OutOfMemory(); - return(0); - } - - D(bug("Creating semaphore %lx...\n",sem)); - - SDL_memset(sem,0,sizeof(*sem)); - - InitSemaphore(&sem->Sem); - - return(sem); -} - -void SDL_DestroySemaphore(SDL_sem *sem) -{ - D(bug("Destroying semaphore %lx...\n",sem)); - - if ( sem ) { -// Condizioni per liberare i task in attesa? - SDL_free(sem); - } -} - -int SDL_SemTryWait(SDL_sem *sem) -{ - if ( ! sem ) { - SDL_SetError("Passed a NULL semaphore"); - return -1; - } - - D(bug("TryWait semaphore...%lx\n",sem)); - - ObtainSemaphore(&sem->Sem); -// ReleaseSemaphore(&sem->Sem); - - return 1; -} - -int SDL_SemWaitTimeout(SDL_sem *sem, Uint32 timeout) -{ - int retval; - - - if ( ! sem ) { - SDL_SetError("Passed a NULL semaphore"); - return -1; - } - - D(bug("WaitTimeout (%ld) semaphore...%lx\n",timeout,sem)); - - /* A timeout of 0 is an easy case */ - if ( timeout == 0 ) { - ObtainSemaphore(&sem->Sem); - return 1; - } - if(!(retval=AttemptSemaphore(&sem->Sem))) - { - SDL_Delay(timeout); - retval=AttemptSemaphore(&sem->Sem); - } - - if(retval==TRUE) - { -// ReleaseSemaphore(&sem->Sem); - retval=1; - } - - return retval; -} - -int SDL_SemWait(SDL_sem *sem) -{ - ObtainSemaphore(&sem->Sem); - return 0; -} - -Uint32 SDL_SemValue(SDL_sem *sem) -{ - Uint32 value; - - value = 0; - if ( sem ) { - #ifdef STORMC4_WOS - value = sem->Sem.ssppc_SS.ss_NestCount; - #else - value = sem->Sem.ss_NestCount; - #endif - } - return value; -} - -int SDL_SemPost(SDL_sem *sem) -{ - if ( ! sem ) { - SDL_SetError("Passed a NULL semaphore"); - return -1; - } - D(bug("SemPost semaphore...%lx\n",sem)); - - ReleaseSemaphore(&sem->Sem); - return 0; -} - |