99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef LP_FENCE_H
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#define LP_FENCE_H
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#include "os/os_thread.h"
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#include "pipe/p_state.h"
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#include "util/u_inlines.h"
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struct pipe_screen;
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struct lp_fence
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{
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struct pipe_reference reference;
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unsigned id;
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mtx_t mutex;
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cnd_t signalled;
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boolean issued;
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unsigned rank;
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unsigned count;
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};
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struct lp_fence *
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lp_fence_create(unsigned rank);
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void
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lp_fence_signal(struct lp_fence *fence);
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boolean
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lp_fence_signalled(struct lp_fence *fence);
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void
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lp_fence_wait(struct lp_fence *fence);
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boolean
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lp_fence_timedwait(struct lp_fence *fence, uint64_t timeout);
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void
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llvmpipe_init_screen_fence_funcs(struct pipe_screen *screen);
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void
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lp_fence_destroy(struct lp_fence *fence);
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static inline void
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lp_fence_reference(struct lp_fence **ptr,
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struct lp_fence *f)
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{
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struct lp_fence *old = *ptr;
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if (pipe_reference(&old->reference, &f->reference)) {
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lp_fence_destroy(old);
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}
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*ptr = f;
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}
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static inline boolean
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lp_fence_issued(const struct lp_fence *fence)
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{
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return fence->issued;
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}
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#endif /* LP_FENCE_H */
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