Preliminary changes to Vulkan memory suballocation
This mostly makes the MemoryAllocator not owned by the
BuddyResourceAllocator so that we don't need an extra class for the
dependency injection in the Vulkan backend. (the container for the
BuddyMemoryAllocator can be it's MemoryAllocator at the same time).
Also renames methods of MemoryAllocator to be more explicit.
Also renames the constructor parameter of BuddyMemoryAllocator to be
(subjectively) closer to what the represent.
BUG=dawn:27
Change-Id: I37355ad5b3cded143956f0adc4742fa1b717e9bc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/12661
Reviewed-by: Bryan Bernhart <bryan.bernhart@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/dawn_native/ResourceHeapAllocator.h b/src/dawn_native/ResourceHeapAllocator.h
new file mode 100644
index 0000000..30aa9b7
--- /dev/null
+++ b/src/dawn_native/ResourceHeapAllocator.h
@@ -0,0 +1,35 @@
+// Copyright 2019 The Dawn Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef DAWNNATIVE_RESOURCEHEAPALLOCATOR_H_
+#define DAWNNATIVE_RESOURCEHEAPALLOCATOR_H_
+
+#include "dawn_native/Error.h"
+#include "dawn_native/ResourceHeap.h"
+
+namespace dawn_native {
+
+ // Interface for backend allocators that create memory heaps resoruces can be suballocated in.
+ class ResourceHeapAllocator {
+ public:
+ virtual ~ResourceHeapAllocator() = default;
+
+ virtual ResultOrError<std::unique_ptr<ResourceHeapBase>> AllocateResourceHeap(
+ uint64_t size) = 0;
+ virtual void DeallocateResourceHeap(std::unique_ptr<ResourceHeapBase> allocation) = 0;
+ };
+
+} // namespace dawn_native
+
+#endif // DAWNNATIVE_RESOURCEHEAPALLOCATOR_H_
