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/*

Licensed to the Apache Software Foundation (ASF) under one

or more contributor license agreements. See the NOTICE file

distributed with this work for additional information

regarding copyright ownership. The ASF licenses this file

to you under the Apache License, Version 2.0 (the

"License"); you may not use this file except in compliance

with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software

distributed under the License is distributed on an "AS IS" BASIS,

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and

limitations under the License.

*/

#include "async.hpp"

using namespace datastax::internal::core;

Async::Async()

: handle_(NULL) {}

Async::~Async() { close_handle(); }

int Async::start(uv_loop_t* loop, const Async::Callback& callback) {

if (handle_ == NULL) {

handle_ = new AllocatedT<uv_async_t>();

handle_->data = this;

int rc = uv_async_init(loop, handle_, on_async);

if (rc != 0) return rc;

}

callback_ = callback;

return 0;

}

void Async::send() {

if (handle_ == NULL) return;

uv_async_send(handle_);

}

void Async::close_handle() {

if (handle_ == NULL) return;

uv_close(reinterpret_cast<uv_handle_t*>(handle_), on_close);

handle_ = NULL;

}

bool Async::is_running() const {

if (handle_ == NULL) return false;

return uv_is_active(reinterpret_cast<uv_handle_t*>(handle_)) != 0;

}

void Async::on_async(uv_async_t* handle) {

Async* async = static_cast<Async*>(handle->data);

async->callback_(async);

}

void Async::on_close(uv_handle_t* handle) {

delete reinterpret_cast<AllocatedT<uv_async_t>*>(handle);

}