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content / common / service_worker / race_network_request_write_buffer_manager.cc [blame]
// Copyright 2024 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/342213636): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif
#include "content/common/service_worker/race_network_request_write_buffer_manager.h"
#include "base/containers/span.h"
#include "base/metrics/field_trial_params.h"
#include "base/system/sys_info.h"
#include "content/common/features.h"
#include "content/common/service_worker/race_network_request_url_loader_client.h"
#include "mojo/public/cpp/system/data_pipe.h"
#include "mojo/public/cpp/system/simple_watcher.h"
#include "services/network/public/cpp/features.h"
namespace content {
namespace {
MojoResult CreateDataPipe(mojo::ScopedDataPipeProducerHandle& producer_handle,
mojo::ScopedDataPipeConsumerHandle& consumer_handle,
uint32_t capacity_num_bytes) {
MojoCreateDataPipeOptions options;
options.struct_size = sizeof(MojoCreateDataPipeOptions);
options.flags = MOJO_CREATE_DATA_PIPE_FLAG_NONE;
options.element_num_bytes = 1;
options.capacity_num_bytes = capacity_num_bytes;
return mojo::CreateDataPipe(&options, producer_handle, consumer_handle);
}
} // namespace
uint32_t RaceNetworkRequestWriteBufferManager::data_pipe_size_for_test_ = 0;
RaceNetworkRequestWriteBufferManager::RaceNetworkRequestWriteBufferManager()
: data_pipe_buffer_size_(GetDataPipeCapacityBytes()),
watcher_(FROM_HERE,
mojo::SimpleWatcher::ArmingPolicy::MANUAL,
base::SequencedTaskRunner::GetCurrentDefault()) {
MojoResult result =
CreateDataPipe(producer_, consumer_, data_pipe_buffer_size_);
is_data_pipe_created_ = result == MOJO_RESULT_OK;
}
RaceNetworkRequestWriteBufferManager::~RaceNetworkRequestWriteBufferManager() =
default;
uint32_t RaceNetworkRequestWriteBufferManager::GetDataPipeCapacityBytes() {
if (data_pipe_size_for_test_ > 0) {
return data_pipe_size_for_test_;
}
// The feature param may override the buffer size.
return base::GetFieldTrialParamByFeatureAsInt(
features::kServiceWorkerAutoPreload, "data_pipe_capacity_num_bytes",
network::features::GetDataPipeDefaultAllocationSize(
network::features::DataPipeAllocationSize::kLargerSizeIfPossible));
}
mojo::ScopedDataPipeConsumerHandle
RaceNetworkRequestWriteBufferManager::ReleaseConsumerHandle() {
return std::move(consumer_);
}
void RaceNetworkRequestWriteBufferManager::Abort() {
producer_.reset();
consumer_.reset();
watcher_.Cancel();
}
void RaceNetworkRequestWriteBufferManager::ResetProducer() {
producer_.reset();
}
void RaceNetworkRequestWriteBufferManager::Watch(
mojo::SimpleWatcher::ReadyCallbackWithState callback) {
watcher_.Watch(producer_.get(),
MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
MOJO_WATCH_CONDITION_SATISFIED, std::move(callback));
}
void RaceNetworkRequestWriteBufferManager::CancelWatching() {
watcher_.Cancel();
}
MojoResult RaceNetworkRequestWriteBufferManager::BeginWriteData() {
base::span<uint8_t> buffer = buffer_;
auto result =
producer_->BeginWriteData(mojo::DataPipeProducerHandle::kNoSizeHint,
MOJO_WRITE_DATA_FLAG_NONE, buffer);
buffer_ = buffer;
return result;
}
MojoResult RaceNetworkRequestWriteBufferManager::EndWriteData(
uint32_t num_bytes_written) {
return producer_->EndWriteData(num_bytes_written);
}
void RaceNetworkRequestWriteBufferManager::ArmOrNotify() {
watcher_.ArmOrNotify();
}
std::tuple<MojoResult, size_t> RaceNetworkRequestWriteBufferManager::WriteData(
base::span<const char> buffer) {
// In order to use `WriteAllData` method to write data, the read buffer data
// size should be smaller than the write buffer size. Otherwise we can't
// finish the write operation and `WriteData()` always returns
// |MOJO_RESULT_OUT_OF_RANGE|.
buffer =
buffer.first(std::min(buffer.size(), size_t{data_pipe_buffer_size_}));
MojoResult result = producer_->WriteAllData(base::as_bytes(buffer));
if (result == MOJO_RESULT_OK) {
num_bytes_written_ += buffer.size();
}
return {result, buffer.size()};
}
size_t RaceNetworkRequestWriteBufferManager::CopyAndCompleteWriteData(
base::span<const char> read_buffer) {
return CopyAndCompleteWriteDataWithSize(read_buffer, read_buffer.size());
}
size_t RaceNetworkRequestWriteBufferManager::CopyAndCompleteWriteDataWithSize(
base::span<const char> read_buffer,
size_t max_num_bytes_to_consume) {
// Choose smaller one from either read buffer, write buffer, or
// |max_num_bytes_to_consume|.
size_t num_bytes_to_consume =
std::min({buffer_size(), read_buffer.size(), max_num_bytes_to_consume});
CHECK_GE(data_pipe_buffer_size_, num_bytes_to_consume);
CHECK_GE(buffer_size(), num_bytes_to_consume);
CHECK_GE(read_buffer.size(), num_bytes_to_consume);
base::as_writable_chars(buffer_).copy_prefix_from(
read_buffer.first(num_bytes_to_consume));
MojoResult result = EndWriteData(num_bytes_to_consume);
CHECK_EQ(result, MOJO_RESULT_OK);
return num_bytes_to_consume;
}
// static
void RaceNetworkRequestWriteBufferManager::SetDataPipeCapacityBytesForTesting(
uint32_t size) {
data_pipe_size_for_test_ = size;
}
} // namespace content