Mercurial > sdl-ios-xcode
view src/thread/pth/SDL_sysmutex.c @ 370:ba72f259bc88
Date: Sat, 18 May 2002 17:40:53 +0300
From: Mike Gorchak <mike@malva.ua>
Subject: New QNX patches
- Added more error check to avoid SEGFAULTS;
- Fixed bug in update function for SDL_HWSURFACE. BTW: update is much
faster than before.
- Added checks for SDL_HWSURFACE flag, chosen bpp must be equal to
desktop bpp for SDL_HWSURFACE.
- Fixed overlay bug, no more SEGFAULTS.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 19 May 2002 19:54:01 +0000 |
parents | 1d74ddc90cb2 |
children | 3692456e7b0f |
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/* * GNU pth mutexes * * Patrice Mandin */ #include <stdio.h> #include <stdlib.h> #include <pth.h> #include "SDL_error.h" #include "SDL_mutex.h" #include "SDL_sysmutex_c.h" /* Create a mutex */ SDL_mutex *SDL_CreateMutex(void) { SDL_mutex *mutex; /* Allocate mutex memory */ mutex = (SDL_mutex *)malloc(sizeof(*mutex)); if ( mutex ) { /* Create the mutex, with initial value signaled */ if (!pth_mutex_init(&(mutex->mutexpth_p))) { SDL_SetError("Couldn't create mutex"); free(mutex); mutex = NULL; } } else { SDL_OutOfMemory(); } return(mutex); } /* Free the mutex */ void SDL_DestroyMutex(SDL_mutex *mutex) { if ( mutex ) { free(mutex); } } /* Lock the mutex */ int SDL_mutexP(SDL_mutex *mutex) { if ( mutex == NULL ) { SDL_SetError("Passed a NULL mutex"); return -1; } pth_mutex_acquire(&(mutex->mutexpth_p), FALSE, NULL); return(0); } /* Unlock the mutex */ int SDL_mutexV(SDL_mutex *mutex) { if ( mutex == NULL ) { SDL_SetError("Passed a NULL mutex"); return -1; } pth_mutex_release(&(mutex->mutexpth_p)); return(0); }