/*
* Mesa 3-D graphics library
*
* Copyright (C) 2012-2013 LunarG, Inc.
*
* 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 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 AUTHORS OR COPYRIGHT HOLDERS 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:
* Chia-I Wu <olv@lunarg.com>
*/
#ifndef ILO_FENCE_H
#define ILO_FENCE_H
#include "intel_winsys.h"
#include "ilo_core.h"
#include "ilo_dev.h"
struct ilo_fence {
struct intel_bo *seq_bo;
};
static inline void
ilo_fence_init(struct ilo_fence *fence, const struct ilo_dev *dev)
{
/* no-op */
}
static inline void
ilo_fence_cleanup(struct ilo_fence *fence)
{
intel_bo_unref(fence->seq_bo);
}
/**
* Set the sequence bo for waiting. The fence is considered signaled when
* there is no sequence bo.
*/
static inline void
ilo_fence_set_seq_bo(struct ilo_fence *fence, struct intel_bo *seq_bo)
{
intel_bo_unref(fence->seq_bo);
fence->seq_bo = intel_bo_ref(seq_bo);
}
/**
* Wait for the fence to be signaled or until \p timeout nanoseconds has
* passed. It will wait indefinitely when \p timeout is negative.
*/
static inline bool
ilo_fence_wait(struct ilo_fence *fence, int64_t timeout)
{
return (!fence->seq_bo || intel_bo_wait(fence->seq_bo, timeout) == 0);
}
#endif /* ILO_FENCE_H */