| /* $XFree86: xc/lib/GL/mesa/src/drv/r128/r128_lock.h,v 1.4 2001/01/08 01:07:21 martin Exp $ */ |
| /************************************************************************** |
| |
| Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, Inc., |
| Cedar Park, Texas. |
| All Rights Reserved. |
| |
| Permission is hereby granted, free of charge, to any person obtaining a |
| copy of this software and associated documentation files (the "Software"), |
| to deal in the Software without restriction, including without limitation |
| on the rights to use, copy, modify, merge, publish, distribute, sub |
| license, and/or sell copies of the Software, and to permit persons to whom |
| the Software is furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice (including the next |
| paragraph) shall be included in all copies or substantial portions of the |
| Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| ATI, PRECISION INSIGHT AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| **************************************************************************/ |
| |
| /* |
| * Authors: |
| * Kevin E. Martin <martin@valinux.com> |
| * Gareth Hughes <gareth@valinux.com> |
| * |
| */ |
| |
| #ifndef __R128_LOCK_H__ |
| #define __R128_LOCK_H__ |
| |
| extern void r128GetLock( r128ContextPtr rmesa, 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( rmesa ) \ |
| do { \ |
| char __ret = 0; \ |
| DEBUG_CHECK_LOCK(); \ |
| DRM_CAS( rmesa->driHwLock, rmesa->hHWContext, \ |
| (DRM_LOCK_HELD | rmesa->hHWContext), __ret ); \ |
| if ( __ret ) \ |
| r128GetLock( rmesa, 0 ); \ |
| DEBUG_LOCK(); \ |
| } while (0) |
| |
| /* Unlock the hardware. |
| */ |
| #define UNLOCK_HARDWARE( rmesa ) \ |
| do { \ |
| DRM_UNLOCK( rmesa->driFd, \ |
| rmesa->driHwLock, \ |
| rmesa->hHWContext ); \ |
| DEBUG_RESET(); \ |
| } while (0) |
| |
| #endif /* __R128_LOCK_H__ */ |
