diff options
Diffstat (limited to 'src/mesa/drivers/dri/mach64/mach64_lock.h')
| -rw-r--r-- | src/mesa/drivers/dri/mach64/mach64_lock.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/mach64/mach64_lock.h b/src/mesa/drivers/dri/mach64/mach64_lock.h new file mode 100644 index 0000000000..3a77c1c690 --- /dev/null +++ b/src/mesa/drivers/dri/mach64/mach64_lock.h @@ -0,0 +1,107 @@ +/* $XFree86$ */ /* -*- mode: c; c-basic-offset: 3 -*- */ +/* + * Copyright 2000 Gareth Hughes + * 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 + * GARETH HUGHES 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> + * + */ + +#ifndef __MACH64_LOCK_H__ +#define __MACH64_LOCK_H__ + +#ifdef GLX_DIRECT_RENDERING + +extern void mach64GetLock( mach64ContextPtr mmesa, GLuint flags ); + + +/* Turn DEBUG_LOCKING on to find locking conflicts. + */ +#define DEBUG_LOCKING 1 + +#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( mmesa ) \ + do { \ + char __ret = 0; \ + DEBUG_CHECK_LOCK(); \ + DRM_CAS( mmesa->driHwLock, mmesa->hHWContext, \ + (DRM_LOCK_HELD | mmesa->hHWContext), __ret ); \ + if ( __ret ) \ + mach64GetLock( mmesa, 0 ); \ + DEBUG_LOCK(); \ + } while (0) + +/* Unlock the hardware. + */ +#define UNLOCK_HARDWARE( mmesa ) \ + do { \ + DRM_UNLOCK( mmesa->driFd, \ + mmesa->driHwLock, \ + mmesa->hHWContext ); \ + DEBUG_RESET(); \ + } while (0) + +#endif +#endif /* __MACH64_LOCK_H__ */ |