| /* |
| * Copyright © 2021 Intel Corporation |
| * |
| * 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 |
| * 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. |
| */ |
| #ifndef VK_SEMAPHORE_H |
| #define VK_SEMAPHORE_H |
| |
| #include "vk_object.h" |
| #include "vk_sync.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| struct vk_sync; |
| |
| struct vk_semaphore { |
| struct vk_object_base base; |
| |
| /** VkSemaphoreTypeCreateInfo::semaphoreType */ |
| VkSemaphoreType type; |
| |
| /* Temporary semaphore state. |
| * |
| * A semaphore *may* have temporary state. That state is added to the |
| * semaphore by an import operation and is reset back to NULL when the |
| * semaphore is reset. A semaphore with temporary state cannot be signaled |
| * because the semaphore must already be signaled before the temporary |
| * state can be exported from the semaphore in the other process and |
| * imported here. |
| */ |
| struct vk_sync *temporary; |
| |
| /** Permanent semaphore state. |
| * |
| * Every semaphore has some form of permanent state. |
| * |
| * This field must be last |
| */ |
| _Alignas(8) struct vk_sync permanent; |
| }; |
| |
| VK_DEFINE_NONDISP_HANDLE_CASTS(vk_semaphore, base, VkSemaphore, |
| VK_OBJECT_TYPE_SEMAPHORE); |
| |
| void vk_semaphore_reset_temporary(struct vk_device *device, |
| struct vk_semaphore *semaphore); |
| |
| static inline struct vk_sync * |
| vk_semaphore_get_active_sync(struct vk_semaphore *semaphore) |
| { |
| return semaphore->temporary ? semaphore->temporary : &semaphore->permanent; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* VK_SEMAPHORE_H */ |
| |