flutter_flutter/mojo/edk/system/data_pipe_impl.cc
James Robinson 5bb2480bcd Update to Mojo 4e4d51ce28a8edcb32b9c7f555e38e2ae84a825e, update deps
This updates to mojo 4e4d51ce28a and mojo sdk 711a0bcfb141b4 and updates the sky
package's pubspec.yaml dependency to '>=0.1.0 <0.2.0' to be compatible with
the current mojo package. This includes an update to the Mojo Dart generator to
produce real classes for enums and the corresponding updates for users of the
KeyboardType enum in Sky as well as one scoped_ptr->std::unique_ptr in shell
corresponding to a change in the Mojo EDK.

When a new version of the sky and sky_services package are pushed this will fix
domokit/mojo#440.
2015-09-23 17:26:46 -07:00

53 lines
1.9 KiB
C++

// Copyright 2015 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/data_pipe_impl.h"
#include <algorithm>
#include <memory>
#include <utility>
#include "base/logging.h"
#include "mojo/edk/system/configuration.h"
#include "mojo/edk/system/message_in_transit.h"
#include "mojo/edk/system/message_in_transit_queue.h"
namespace mojo {
namespace system {
void DataPipeImpl::ConvertDataToMessages(const char* buffer,
size_t* start_index,
size_t* current_num_bytes,
MessageInTransitQueue* message_queue) {
// The maximum amount of data to send per message (make it a multiple of the
// element size.
size_t max_message_num_bytes = GetConfiguration().max_message_num_bytes;
max_message_num_bytes -= max_message_num_bytes % element_num_bytes();
DCHECK_GT(max_message_num_bytes, 0u);
while (*current_num_bytes > 0) {
size_t current_contiguous_num_bytes =
(*start_index + *current_num_bytes > capacity_num_bytes())
? (capacity_num_bytes() - *start_index)
: *current_num_bytes;
size_t message_num_bytes =
std::min(max_message_num_bytes, current_contiguous_num_bytes);
// Note: |message_num_bytes| fits in a |uint32_t| since the capacity does.
std::unique_ptr<MessageInTransit> message(new MessageInTransit(
MessageInTransit::Type::ENDPOINT_CLIENT,
MessageInTransit::Subtype::ENDPOINT_CLIENT_DATA,
static_cast<uint32_t>(message_num_bytes), buffer + *start_index));
message_queue->AddMessage(std::move(message));
DCHECK_LE(message_num_bytes, *current_num_bytes);
*start_index += message_num_bytes;
*start_index %= capacity_num_bytes();
*current_num_bytes -= message_num_bytes;
}
}
} // namespace system
} // namespace mojo