| #ifndef __GAMMA_LOCK_H__ |
| #define __GAMMA_LOCK_H__ |
| |
| extern void gammaGetLock( gammaContextPtr gmesa, GLuint flags ); |
| |
| /* Turn DEBUG_LOCKING on to find locking conflicts. |
| */ |
| #define DEBUG_LOCKING 0 |
| |
| #if DEBUG_LOCKING |
| extern char *prevLockFile; |
| extern int prevLockLine; |
| |
| #define DEBUG_LOCK() \ |
| do { \ |
| prevLockFile = (__FILE__); \ |
| prevLockLine = (__LINE__); \ |
| } while (0) |
| |
| #define DEBUG_RESET() \ |
| do { \ |
| prevLockFile = 0; \ |
| prevLockLine = 0; \ |
| } while (0) |
| |
| #define DEBUG_CHECK_LOCK() \ |
| do { \ |
| if ( prevLockFile ) { \ |
| fprintf( stderr, \ |
| "LOCK SET!\n\tPrevious %s:%d\n\tCurrent: %s:%d\n", \ |
| prevLockFile, prevLockLine, __FILE__, __LINE__ ); \ |
| exit( 1 ); \ |
| } \ |
| } while (0) |
| |
| #else |
| |
| #define DEBUG_LOCK() |
| #define DEBUG_RESET() |
| #define DEBUG_CHECK_LOCK() |
| |
| #endif |
| |
| /* |
| * !!! We may want to separate locks from locks with validation. This |
| * could be used to improve performance for those things commands that |
| * do not do any drawing !!! |
| */ |
| |
| /* Lock the hardware and validate our state. |
| */ |
| #define LOCK_HARDWARE( gmesa ) \ |
| do { \ |
| char __ret = 0; \ |
| DEBUG_CHECK_LOCK(); \ |
| DRM_CAS( gmesa->driHwLock, gmesa->hHWContext, \ |
| (DRM_LOCK_HELD | gmesa->hHWContext), __ret ); \ |
| if ( __ret ) \ |
| gammaGetLock( gmesa, 0 ); \ |
| DEBUG_LOCK(); \ |
| } while (0) |
| |
| /* Unlock the hardware. |
| */ |
| #define UNLOCK_HARDWARE( gmesa ) \ |
| do { \ |
| DRM_UNLOCK( gmesa->driFd, \ |
| gmesa->driHwLock, \ |
| gmesa->hHWContext ); \ |
| DEBUG_RESET(); \ |
| } while (0) |
| |
| #define GAMMAHW_LOCK( gmesa ) \ |
| DRM_UNLOCK(gmesa->driFd, gmesa->driHwLock, gmesa->hHWContext); \ |
| DRM_SPINLOCK(&gmesa->driScreen->pSAREA->drawable_lock, \ |
| gmesa->driScreen->drawLockID); \ |
| VALIDATE_DRAWABLE_INFO_NO_LOCK(gmesa); |
| |
| #define GAMMAHW_UNLOCK( gmesa ) \ |
| DRM_SPINUNLOCK(&gmesa->driScreen->pSAREA->drawable_lock, \ |
| gmesa->driScreen->drawLockID); \ |
| VALIDATE_DRAWABLE_INFO_NO_LOCK_POST(gmesa); |
| |
| #endif /* __GAMMA_LOCK_H__ */ |