mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 09:12:24 +03:00
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/*
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* Copyright (c) 2018-2020, NVIDIA CORPORATION. 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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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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 NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <pthread.h>
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#include <nvgpu/rwsem.h>
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#include <nvgpu/log.h>
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#include <nvgpu/bug.h>
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void nvgpu_rwsem_init(struct nvgpu_rwsem *rwsem)
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{
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int err = pthread_rwlock_init(&rwsem->rw_sem, NULL);
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nvgpu_assert(err == 0);
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}
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/*
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* Acquire.
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*/
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void nvgpu_rwsem_down_read(struct nvgpu_rwsem *rwsem)
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{
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int err = pthread_rwlock_rdlock(&rwsem->rw_sem);
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nvgpu_assert(err == 0);
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}
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/*
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* Release.
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*/
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void nvgpu_rwsem_up_read(struct nvgpu_rwsem *rwsem)
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{
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int err = pthread_rwlock_unlock(&rwsem->rw_sem);
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nvgpu_assert(err == 0);
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}
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void nvgpu_rwsem_down_write(struct nvgpu_rwsem *rwsem)
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{
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int err = pthread_rwlock_wrlock(&rwsem->rw_sem);
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nvgpu_assert(err == 0);
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}
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void nvgpu_rwsem_up_write(struct nvgpu_rwsem *rwsem)
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{
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int err = pthread_rwlock_unlock(&rwsem->rw_sem);
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nvgpu_assert(err == 0);
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}
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