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Viewing changes to src/mesa/drivers/dri/nouveau/nouveau_lock.h

  • Committer: Bazaar Package Importer
  • Author(s): Morten Kjeldgaard
  • Date: 2008-05-06 16:19:15 UTC
  • Revision ID: james.westby@ubuntu.com-20080506161915-uynz7nftmfixu6bq
Tags: upstream-7.0.3
Import upstream version 7.0.3

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src/mesa/drivers/dri/nouveau/nouveau_lock.h
 
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/**************************************************************************
 
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Copyright 2006 Stephane Marchesin
 
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All Rights Reserved.
 
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Permission is hereby granted, free of charge, to any person obtaining a
 
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copy of this software and associated documentation files (the "Software"),
 
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to deal in the Software without restriction, including without limitation
 
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on the rights to use, copy, modify, merge, publish, distribute, sub
 
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license, and/or sell copies of the Software, and to permit persons to whom
 
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the Software is furnished to do so, subject to the following conditions:
 
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The above copyright notice and this permission notice (including the next
 
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paragraph) shall be included in all copies or substantial portions of the
 
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Software.
 
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 
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ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
 
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 
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USE OR OTHER DEALINGS IN THE SOFTWARE.
 
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**************************************************************************/
 
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#ifndef __NOUVEAU_LOCK_H__
 
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#define __NOUVEAU_LOCK_H__
 
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#include "nouveau_context.h"
 
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extern void nouveauGetLock( nouveauContextPtr nmesa, GLuint flags );
 
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/*
 
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 * !!! We may want to separate locks from locks with validation.  This
 
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 * could be used to improve performance for those things commands that
 
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 * do not do any drawing !!!
 
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 */
 
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/* Lock the hardware and validate our state.
 
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 */
 
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#define LOCK_HARDWARE( nmesa )                                          \
 
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   do {                                                                 \
 
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      char __ret = 0;                                                   \
 
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      DEBUG_CHECK_LOCK();                                               \
 
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      DRM_CAS( nmesa->driHwLock, nmesa->hHWContext,                     \
 
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               (DRM_LOCK_HELD | nmesa->hHWContext), __ret );            \
 
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      if ( __ret )                                                      \
 
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         nouveauGetLock( nmesa, 0 );                                    \
 
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      DEBUG_LOCK();                                                     \
 
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   } while (0)
 
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/* Unlock the hardware.
 
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 */
 
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#define UNLOCK_HARDWARE( nmesa )                                        \
 
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   do {                                                                 \
 
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      DRM_UNLOCK( nmesa->driFd,                                         \
 
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                  nmesa->driHwLock,                                     \
 
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                  nmesa->hHWContext );                                  \
 
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      DEBUG_RESET();                                                    \
 
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   } while (0)
 
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#define DEBUG_LOCK()
 
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#define DEBUG_RESET()
 
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#define DEBUG_CHECK_LOCK()
 
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#endif /* __NOUVEAU_LOCK_H__ */