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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 "mojo/system/data_pipe_producer_dispatcher.h"
#include "base/logging.h"
#include "mojo/system/data_pipe.h"
#include "mojo/system/memory.h"
namespace mojo {
namespace system {
DataPipeProducerDispatcher::DataPipeProducerDispatcher() {
}
void DataPipeProducerDispatcher::Init(scoped_refptr<DataPipe> data_pipe) {
DCHECK(data_pipe.get());
data_pipe_ = data_pipe;
}
Dispatcher::Type DataPipeProducerDispatcher::GetType() const {
return kTypeDataPipeProducer;
}
DataPipeProducerDispatcher::~DataPipeProducerDispatcher() {
// |Close()|/|CloseImplNoLock()| should have taken care of the pipe.
DCHECK(!data_pipe_.get());
}
void DataPipeProducerDispatcher::CancelAllWaitersNoLock() {
lock().AssertAcquired();
data_pipe_->ProducerCancelAllWaiters();
}
void DataPipeProducerDispatcher::CloseImplNoLock() {
lock().AssertAcquired();
data_pipe_->ProducerClose();
data_pipe_ = NULL;
}
scoped_refptr<Dispatcher>
DataPipeProducerDispatcher::CreateEquivalentDispatcherAndCloseImplNoLock() {
lock().AssertAcquired();
scoped_refptr<DataPipeProducerDispatcher> rv =
new DataPipeProducerDispatcher();
rv->Init(data_pipe_);
data_pipe_ = NULL;
return scoped_refptr<Dispatcher>(rv.get());
}
MojoResult DataPipeProducerDispatcher::WriteDataImplNoLock(
const void* elements,
uint32_t* num_bytes,
MojoWriteDataFlags flags) {
lock().AssertAcquired();
if (!VerifyUserPointer<uint32_t>(num_bytes, 1))
return MOJO_RESULT_INVALID_ARGUMENT;
if (!VerifyUserPointer<void>(elements, *num_bytes))
return MOJO_RESULT_INVALID_ARGUMENT;
return data_pipe_->ProducerWriteData(
elements, num_bytes, (flags & MOJO_WRITE_DATA_FLAG_ALL_OR_NONE));
}
MojoResult DataPipeProducerDispatcher::BeginWriteDataImplNoLock(
void** buffer,
uint32_t* buffer_num_bytes,
MojoWriteDataFlags flags) {
lock().AssertAcquired();
if (!VerifyUserPointer<void*>(buffer, 1))
return MOJO_RESULT_INVALID_ARGUMENT;
if (!VerifyUserPointer<uint32_t>(buffer_num_bytes, 1))
return MOJO_RESULT_INVALID_ARGUMENT;
return data_pipe_->ProducerBeginWriteData(
buffer, buffer_num_bytes, (flags & MOJO_WRITE_DATA_FLAG_ALL_OR_NONE));
}
MojoResult DataPipeProducerDispatcher::EndWriteDataImplNoLock(
uint32_t num_bytes_written) {
lock().AssertAcquired();
return data_pipe_->ProducerEndWriteData(num_bytes_written);
}
MojoResult DataPipeProducerDispatcher::AddWaiterImplNoLock(
Waiter* waiter,
MojoWaitFlags flags,
MojoResult wake_result) {
lock().AssertAcquired();
return data_pipe_->ProducerAddWaiter(waiter, flags, wake_result);
}
void DataPipeProducerDispatcher::RemoveWaiterImplNoLock(Waiter* waiter) {
lock().AssertAcquired();
data_pipe_->ProducerRemoveWaiter(waiter);
}
bool DataPipeProducerDispatcher::IsBusyNoLock() const {
lock().AssertAcquired();
return data_pipe_->ProducerIsBusy();
}
} // namespace system
} // namespace mojo
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