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62139fcca7
This will prevent mixing it up with other serial types in the future. Bug: dawn:442 Change-Id: I74e964708acc62eb0f33127cc48f1b9a7b171d11 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/28923 Commit-Queue: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Jiawei Shao <jiawei.shao@intel.com> Reviewed-by: Austin Eng <enga@chromium.org>
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
// Copyright 2018 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef DAWNNATIVE_RINGBUFFERALLOCATOR_H_
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#define DAWNNATIVE_RINGBUFFERALLOCATOR_H_
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#include "common/SerialQueue.h"
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#include "dawn_native/IntegerTypes.h"
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#include <limits>
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#include <memory>
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// RingBufferAllocator is the front-end implementation used to manage a ring buffer in GPU memory.
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namespace dawn_native {
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class RingBufferAllocator {
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public:
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RingBufferAllocator() = default;
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RingBufferAllocator(uint64_t maxSize);
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~RingBufferAllocator() = default;
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uint64_t Allocate(uint64_t allocationSize, ExecutionSerial serial);
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void Deallocate(ExecutionSerial lastCompletedSerial);
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uint64_t GetSize() const;
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bool Empty() const;
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uint64_t GetUsedSize() const;
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static constexpr uint64_t kInvalidOffset = std::numeric_limits<uint64_t>::max();
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private:
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struct Request {
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uint64_t endOffset;
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uint64_t size;
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};
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SerialQueue<ExecutionSerial, Request>
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mInflightRequests; // Queue of the recorded sub-alloc requests
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// (e.g. frame of resources).
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uint64_t mUsedEndOffset = 0; // Tail of used sub-alloc requests (in bytes).
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uint64_t mUsedStartOffset = 0; // Head of used sub-alloc requests (in bytes).
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uint64_t mMaxBlockSize = 0; // Max size of the ring buffer (in bytes).
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uint64_t mUsedSize = 0; // Size of the sub-alloc requests (in bytes) of the ring buffer.
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uint64_t mCurrentRequestSize =
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0; // Size of the sub-alloc requests (in bytes) of the current serial.
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};
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} // namespace dawn_native
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#endif // DAWNNATIVE_RINGBUFFERALLOCATOR_H_
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