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// Copyright 2013 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 "third_party/mojo/src/mojo/edk/system/data_pipe_producer_dispatcher.h"
#include "base/logging.h"
#include "third_party/mojo/src/mojo/edk/system/data_pipe.h"
#include "third_party/mojo/src/mojo/edk/system/memory.h"
namespace mojo {
namespace system {
void DataPipeProducerDispatcher::Init(scoped_refptr<DataPipe> data_pipe) {
DCHECK(data_pipe);
data_pipe_ = data_pipe;
}
Dispatcher::Type DataPipeProducerDispatcher::GetType() const {
return Type::DATA_PIPE_PRODUCER;
}
// static
scoped_refptr<DataPipeProducerDispatcher>
DataPipeProducerDispatcher::Deserialize(Channel* channel,
const void* source,
size_t size) {
scoped_refptr<DataPipe> data_pipe;
if (!DataPipe::ProducerDeserialize(channel, source, size, &data_pipe))
return nullptr;
DCHECK(data_pipe);
scoped_refptr<DataPipeProducerDispatcher> dispatcher = Create();
dispatcher->Init(data_pipe);
return dispatcher;
}
DataPipe* DataPipeProducerDispatcher::GetDataPipeForTest() {
MutexLocker locker(&mutex());
return data_pipe_.get();
}
DataPipeProducerDispatcher::DataPipeProducerDispatcher() {
}
DataPipeProducerDispatcher::~DataPipeProducerDispatcher() {
// |Close()|/|CloseImplNoLock()| should have taken care of the pipe.
DCHECK(!data_pipe_);
}
void DataPipeProducerDispatcher::CancelAllAwakablesNoLock() {
mutex().AssertHeld();
data_pipe_->ProducerCancelAllAwakables();
}
void DataPipeProducerDispatcher::CloseImplNoLock() {
mutex().AssertHeld();
data_pipe_->ProducerClose();
data_pipe_ = nullptr;
}
scoped_refptr<Dispatcher>
DataPipeProducerDispatcher::CreateEquivalentDispatcherAndCloseImplNoLock() {
mutex().AssertHeld();
scoped_refptr<DataPipeProducerDispatcher> rv = Create();
rv->Init(data_pipe_);
data_pipe_ = nullptr;
return scoped_refptr<Dispatcher>(rv.get());
}
MojoResult DataPipeProducerDispatcher::WriteDataImplNoLock(
UserPointer<const void> elements,
UserPointer<uint32_t> num_bytes,
MojoWriteDataFlags flags) {
mutex().AssertHeld();
return data_pipe_->ProducerWriteData(
elements, num_bytes, (flags & MOJO_WRITE_DATA_FLAG_ALL_OR_NONE));
}
MojoResult DataPipeProducerDispatcher::BeginWriteDataImplNoLock(
UserPointer<void*> buffer,
UserPointer<uint32_t> buffer_num_bytes,
MojoWriteDataFlags flags) {
mutex().AssertHeld();
return data_pipe_->ProducerBeginWriteData(buffer, buffer_num_bytes);
}
MojoResult DataPipeProducerDispatcher::EndWriteDataImplNoLock(
uint32_t num_bytes_written) {
mutex().AssertHeld();
return data_pipe_->ProducerEndWriteData(num_bytes_written);
}
HandleSignalsState DataPipeProducerDispatcher::GetHandleSignalsStateImplNoLock()
const {
mutex().AssertHeld();
return data_pipe_->ProducerGetHandleSignalsState();
}
MojoResult DataPipeProducerDispatcher::AddAwakableImplNoLock(
Awakable* awakable,
MojoHandleSignals signals,
uintptr_t context,
HandleSignalsState* signals_state) {
mutex().AssertHeld();
return data_pipe_->ProducerAddAwakable(awakable, signals, context,
signals_state);
}
void DataPipeProducerDispatcher::RemoveAwakableImplNoLock(
Awakable* awakable,
HandleSignalsState* signals_state) {
mutex().AssertHeld();
data_pipe_->ProducerRemoveAwakable(awakable, signals_state);
}
void DataPipeProducerDispatcher::StartSerializeImplNoLock(
Channel* channel,
size_t* max_size,
size_t* max_platform_handles) {
DCHECK(HasOneRef()); // Only one ref => no need to take the lock.
data_pipe_->ProducerStartSerialize(channel, max_size, max_platform_handles);
}
bool DataPipeProducerDispatcher::EndSerializeAndCloseImplNoLock(
Channel* channel,
void* destination,
size_t* actual_size,
embedder::PlatformHandleVector* platform_handles) {
DCHECK(HasOneRef()); // Only one ref => no need to take the lock.
bool rv = data_pipe_->ProducerEndSerialize(channel, destination, actual_size,
platform_handles);
data_pipe_ = nullptr;
return rv;
}
bool DataPipeProducerDispatcher::IsBusyNoLock() const {
mutex().AssertHeld();
return data_pipe_->ProducerIsBusy();
}
} // namespace system
} // namespace mojo
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