fenced_allocator.h | Explore in Territory

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

// This file contains the definition of the FencedAllocator class.

#ifndef GPU_COMMAND_BUFFER_CLIENT_FENCED_ALLOCATOR_H_
#define GPU_COMMAND_BUFFER_CLIENT_FENCED_ALLOCATOR_H_

#include <stddef.h>
#include <stdint.h>

#include <vector>

#include "base/check.h"
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "gpu/gpu_export.h"

namespace gpu {
class CommandBufferHelper;

// FencedAllocator provides a mechanism to manage allocations within a fixed
// block of memory (storing the book-keeping externally). Furthermore this
// class allows to free data "pending" the passage of a command buffer token,
// that is, the memory won't be reused until the command buffer has processed
// that token.
//
// NOTE: Although this class is intended to be used in the command buffer
// environment which is multi-process, this class isn't "thread safe", because
// it isn't meant to be shared across modules. It is thread-compatible though
// (see http://www.corp.google.com/eng/doc/cpp_primer.html#thread_safety).
class GPU_EXPORT FencedAllocator { … };

// This class functions just like FencedAllocator, but its API uses pointers
// instead of offsets.
class FencedAllocatorWrapper { … };

}  // namespace gpu

#endif  // GPU_COMMAND_BUFFER_CLIENT_FENCED_ALLOCATOR_H_
chromium/gpu/command_buffer/client/fenced_allocator.h
