/* -*- mode: c; c-basic-offset: 3 -*- * * Copyright 2000 VA Linux Systems Inc., Fremont, California. * * 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 * VA LINUX SYSTEMS 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. */ /* $XFree86: xc/lib/GL/mesa/src/drv/tdfx/tdfx_lock.h,v 1.3 2002/02/22 21:45:03 dawes Exp $ */ /* * Original rewrite: * Gareth Hughes <gareth@valinux.com>, 29 Sep - 1 Oct 2000 * * Authors: * Gareth Hughes <gareth@valinux.com> * */ #ifndef __TDFX_LOCK_H__ #define __TDFX_LOCK_H__ #ifdef GLX_DIRECT_RENDERING /* You can turn this 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 /* DEBUG_LOCKING */ extern void tdfxGetLock( tdfxContextPtr fxMesa ); /* !!! 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 !!! */ #define DRM_LIGHT_LOCK_RETURN(fd,lock,context,__ret) \ do { \ DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \ if (__ret) drmGetLock(fd,context,0); \ } while(0) #define LOCK_HARDWARE( fxMesa ) \ do { \ char __ret = 0; \ \ DEBUG_CHECK_LOCK(); \ DRM_CAS( fxMesa->driHwLock, fxMesa->hHWContext, \ DRM_LOCK_HELD | fxMesa->hHWContext, __ret ); \ if ( __ret ) { \ tdfxGetLock( fxMesa ); \ } \ DEBUG_LOCK(); \ } while (0) /* Unlock the hardware using the global current context */ #define UNLOCK_HARDWARE( fxMesa ) \ do { \ DRM_UNLOCK( fxMesa->driFd, fxMesa->driHwLock, fxMesa->hHWContext ); \ DEBUG_RESET(); \ } while (0) /* * This pair of macros makes a loop over the drawing operations * so it is not self contained and doesn't have the nice single * statement semantics of most macros. */ #define BEGIN_CLIP_LOOP(fxMesa) \ do { \ LOCK_HARDWARE( fxMesa ); \ BEGIN_CLIP_LOOP_LOCKED( fxMesa ) #define BEGIN_CLIP_LOOP_LOCKED(fxMesa) \ do { \ int _nc = fxMesa->numClipRects; \ while (_nc--) { \ if (fxMesa->numClipRects > 1) { \ int _height = fxMesa->screen_height; \ fxMesa->Glide.grClipWindow(fxMesa->pClipRects[_nc].x1, \ _height - fxMesa->pClipRects[_nc].y2, \ fxMesa->pClipRects[_nc].x2, \ _height - fxMesa->pClipRects[_nc].y1); \ } #define END_CLIP_LOOP_LOCKED( fxMesa ) \ } \ } while (0) #define END_CLIP_LOOP( fxMesa ) \ END_CLIP_LOOP_LOCKED( fxMesa ); \ UNLOCK_HARDWARE( fxMesa ); \ } while (0) #endif /* GLX_DIRECT_RENDERING */ #endif /* __TDFX_LOCK_H__ */