chromium/third_party/dawn/src/dawn/native/CommandAllocator.cpp

// Copyright 2017 The Dawn & Tint Authors
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#include "dawn/native/CommandAllocator.h"

#include <algorithm>
#include <climits>
#include <cstdlib>
#include <utility>

#include "dawn/common/Assert.h"
#include "dawn/common/Math.h"

namespace dawn::native {

// TODO([email protected]): figure out a way to have more type safety for the iterator

CommandIterator::CommandIterator() { … }

CommandIterator::~CommandIterator() { … }

CommandIterator::CommandIterator(CommandIterator&& other) { … }

CommandIterator& CommandIterator::operator=(CommandIterator&& other) { … }

CommandIterator::CommandIterator(CommandAllocator allocator) : … { … }

void CommandIterator::AcquireCommandBlocks(std::vector<CommandAllocator> allocators) { … }

bool CommandIterator::NextCommandIdInNewBlock(uint32_t* commandId) { … }

void CommandIterator::Reset() { … }

void CommandIterator::MakeEmptyAsDataWasDestroyed() { … }

bool CommandIterator::IsEmpty() const { … }

// Potential TODO(crbug.com/dawn/835):
//  - Host the size and pointer to next block in the block itself to avoid having an allocation
//    in the vector
//  - Assume T's alignof is, say 64bits, static assert it, and make commandAlignment a constant
//    in Allocate
//  - Be able to optimize allocation to one block, for command buffers expected to live long to
//    avoid cache misses
//  - Better block allocation, maybe have Dawn API to say command buffer is going to have size
//    close to another

CommandAllocator::CommandAllocator() { … }

CommandAllocator::~CommandAllocator() { … }

CommandAllocator::CommandAllocator(CommandAllocator&& other)
    : … { … }

CommandAllocator& CommandAllocator::operator=(CommandAllocator&& other) { … }

void CommandAllocator::Reset() { … }

bool CommandAllocator::IsEmpty() const { … }

CommandBlocks&& CommandAllocator::AcquireBlocks() { … }

char* CommandAllocator::AllocateInNewBlock(uint32_t commandId,
                                           size_t commandSize,
                                           size_t commandAlignment) { … }

bool CommandAllocator::GetNewBlock(size_t minimumSize) { … }

void CommandAllocator::ResetPointers() { … }

const char* CommandAllocator::CopyAsNullTerminatedString(std::string_view in) { … }

}  // namespace dawn::native