diff options
Diffstat (limited to 'src/mesa/drivers/dri/radeon/common_lock.h')
| -rw-r--r-- | src/mesa/drivers/dri/radeon/common_lock.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/radeon/common_lock.h b/src/mesa/drivers/dri/radeon/common_lock.h new file mode 100644 index 0000000000..50a4a0b05a --- /dev/null +++ b/src/mesa/drivers/dri/radeon/common_lock.h @@ -0,0 +1,111 @@ +/************************************************************************** + +Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and + VA Linux Systems Inc., Fremont, California. +Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved. + +The Weather Channel (TM) funded Tungsten Graphics to develop the +initial release of the Radeon 8500 driver under the XFree86 license. +This notice must be preserved. + +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 the rights to use, copy, modify, merge, publish, +distribute, sublicense, 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 NONINFRINGEMENT. +IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS 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: + * Gareth Hughes <gareth@valinux.com> + * Keith Whitwell <keith@tungstengraphics.com> + * Kevin E. Martin <martin@valinux.com> + */ + +#ifndef COMMON_LOCK_H +#define COMMON_LOCK_H +extern void radeonGetLock(radeonContextPtr 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)->dri.hwLock, (rmesa)->dri.hwContext, \ + (DRM_LOCK_HELD | (rmesa)->dri.hwContext), __ret ); \ + if ( __ret ) \ + radeonGetLock( (rmesa), 0 ); \ + DEBUG_LOCK(); \ + } while (0) + +#define UNLOCK_HARDWARE( rmesa ) \ + do { \ + DRM_UNLOCK( (rmesa)->dri.fd, \ + (rmesa)->dri.hwLock, \ + (rmesa)->dri.hwContext ); \ + DEBUG_RESET(); \ + } while (0) + +#endif |