chromium/gpu/command_buffer/client/readback_buffer_shadow_tracker.cc

// Copyright 2018 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

#include "gpu/command_buffer/client/readback_buffer_shadow_tracker.h"

#include "base/memory/ptr_util.h"
#include "build/build_config.h"
#include "gpu/command_buffer/client/gles2_cmd_helper.h"
#include "gpu/command_buffer/client/mapped_memory.h"

namespace gpu {
namespace gles2 {

// ReadbackBufferShadowTracker::Buffer

ReadbackBufferShadowTracker::Buffer::Buffer(GLuint buffer_id,
                                            MappedMemoryManager* mapped_memory,
                                            GLES2CmdHelper* helper)
    : … { … }

ReadbackBufferShadowTracker::Buffer::~Buffer() { … }

uint32_t ReadbackBufferShadowTracker::Buffer::Alloc(int32_t* shm_id,
                                                    uint32_t* shm_offset,
                                                    bool* already_allocated) { … }

void ReadbackBufferShadowTracker::Buffer::Free() { … }

void* ReadbackBufferShadowTracker::Buffer::MapReadbackShm(uint32_t offset,
                                                          uint32_t map_size) { … }

bool ReadbackBufferShadowTracker::Buffer::UnmapReadbackShm() { … }

void ReadbackBufferShadowTracker::Buffer::UpdateSerialTo(uint64_t serial) { … }

// ReadbackBufferShadowTracker

ReadbackBufferShadowTracker::ReadbackBufferShadowTracker(
    MappedMemoryManager* mapped_memory,
    GLES2CmdHelper* helper)
    : … { … }

ReadbackBufferShadowTracker::~ReadbackBufferShadowTracker() { … }

ReadbackBufferShadowTracker::Buffer*
ReadbackBufferShadowTracker::GetOrCreateBuffer(GLuint id, GLuint size) { … }

void ReadbackBufferShadowTracker::OnBufferWrite(GLuint id) { … }

ReadbackBufferShadowTracker::BufferList
ReadbackBufferShadowTracker::TakeUnfencedBufferList() { … }

}  // namespace gles2
}  // namespace gpu