1 files changed, 82 insertions, 0 deletions
diff --git a/src/vulkan/runtime/vk_fence.h b/src/vulkan/runtime/vk_fence.h
new file mode 100644
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+++ b/src/vulkan/runtime/vk_fence.h
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+/*
+ * 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_FENCE_H
+#define VK_FENCE_H
+
+#include "vk_object.h"
+#include "vk_sync.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct vk_sync;
+
+struct vk_fence {
+   struct vk_object_base base;
+
+   /* Temporary fence state.
+    *
+    * A fence *may* have temporary state.  That state is added to the fence by
+    * an import operation and is reset back to NULL when the fence is reset.
+    * A fence with temporary state cannot be signaled because the fence must
+    * already be signaled before the temporary state can be exported from the
+    * fence in the other process and imported here.
+    */
+   struct vk_sync *temporary;
+
+   /** Permanent fence state.
+    *
+    * Every fence has some form of permanent state.
+    *
+    * This field must be last
+    */
+   alignas(8) struct vk_sync permanent;
+};
+
+VK_DEFINE_NONDISP_HANDLE_CASTS(vk_fence, base, VkFence,
+                               VK_OBJECT_TYPE_FENCE);
+
+VkResult vk_fence_create(struct vk_device *device,
+                         const VkFenceCreateInfo *pCreateInfo,
+                         const VkAllocationCallbacks *pAllocator,
+                         struct vk_fence **fence_out);
+
+void vk_fence_destroy(struct vk_device *device,
+                      struct vk_fence *fence,
+                      const VkAllocationCallbacks *pAllocator);
+
+void vk_fence_reset_temporary(struct vk_device *device,
+                              struct vk_fence *fence);
+
+static inline struct vk_sync *
+vk_fence_get_active_sync(struct vk_fence *fence)
+{
+   return fence->temporary ? fence->temporary : &fence->permanent;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* VK_FENCE_H */