blob: 5f3e8c012513db8b6af631795c956386a42e5344 [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "mojo/edk/system/ports_message.h"
#include "base/memory/ptr_util.h"
#include "mojo/edk/system/node_channel.h"
namespace mojo {
namespace edk {
// static
std::unique_ptr<PortsMessage> PortsMessage::NewUserMessage(
size_t num_payload_bytes,
size_t num_ports,
size_t num_handles) {
return base::WrapUnique(
new PortsMessage(num_payload_bytes, num_ports, num_handles));
PortsMessage::~PortsMessage() {}
PortsMessage::PortsMessage(size_t num_payload_bytes,
size_t num_ports,
size_t num_handles)
: ports::Message(num_payload_bytes, num_ports) {
size_t size = num_header_bytes_ + num_ports_bytes_ + num_payload_bytes;
void* ptr;
channel_message_ = NodeChannel::CreatePortsMessage(size, &ptr, num_handles);
PortsMessage::PortsMessage(size_t num_header_bytes,
size_t num_payload_bytes,
size_t num_ports_bytes,
Channel::MessagePtr channel_message)
: ports::Message(num_header_bytes,
num_ports_bytes) {
if (channel_message) {
channel_message_ = std::move(channel_message);
void* data;
size_t num_data_bytes;
NodeChannel::GetPortsMessageData(channel_message_.get(), &data,
start_ = static_cast<char*>(data);
} else {
// TODO: Clean this up. In practice this branch of the constructor should
// only be reached from Node-internal calls to AllocMessage, which never
// carry ports or non-header bytes.
CHECK_EQ(num_payload_bytes, 0u);
CHECK_EQ(num_ports_bytes, 0u);
void* ptr;
channel_message_ =
NodeChannel::CreatePortsMessage(num_header_bytes, &ptr, 0);
start_ = static_cast<char*>(ptr);
} // namespace edk
} // namespace mojo