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/*
Copyright (c) 2015-17 Miranda NG project (https://miranda-ng.org)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation version 2
of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "stdafx.h"
RequestQueue::RequestQueue(HNETLIBUSER _nlu) :
nlu(_nlu), requests(1)
{
isTerminated = true;
hRequestQueueThread = nullptr;
}
RequestQueue::~RequestQueue()
{
if (hRequestQueueThread) {
WaitForSingleObject(hRequestQueueThread, INFINITE);
hRequestQueueThread = nullptr;
}
requests.destroy();
}
void RequestQueue::Start()
{
if (!isTerminated)
return;
isTerminated = false;
if (hRequestQueueThread == nullptr)
hRequestQueueThread = mir_forkthread((pThreadFunc)&RequestQueue::WorkerThread, this);
}
void RequestQueue::Stop()
{
if (isTerminated)
return;
isTerminated = true;
hRequestQueueEvent.Set();
}
void RequestQueue::Push(HttpRequest *request, HttpResponseCallback response, void *arg)
{
if (isTerminated)
return;
RequestQueueItem *item = new RequestQueueItem(request, response, arg);
{
mir_cslock lock(requestQueueLock);
requests.insert(item);
}
hRequestQueueEvent.Set();
}
void RequestQueue::Send(HttpRequest *request, HttpResponseCallback response, void *arg)
{
RequestQueueItem *item = new RequestQueueItem(request, response, arg);
mir_forkthreadowner((pThreadFuncOwner)&RequestQueue::AsyncSendThread, this, item, nullptr);
}
void RequestQueue::Execute(RequestQueueItem *item)
{
NETLIBHTTPREQUEST *response = item->request->Send(nlu);
if (item->responseCallback != nullptr)
item->responseCallback(response, item->arg);
Netlib_FreeHttpRequest(response);
requests.remove(item);
delete item;
}
unsigned int RequestQueue::AsyncSendThread(void *owner, void *arg)
{
RequestQueue *that = (RequestQueue*)owner;
RequestQueueItem *item = (RequestQueueItem*)arg;
that->Execute(item);
return 0;
}
unsigned int RequestQueue::WorkerThread(void *arg)
{
RequestQueue *queue = (RequestQueue*)arg;
while (true) {
queue->hRequestQueueEvent.Wait();
if (queue->isTerminated)
break;
while (true) {
RequestQueueItem *item = nullptr;
{
mir_cslock lock(queue->requestQueueLock);
if (queue->requests.getCount() == 0)
break;
item = queue->requests[0];
queue->requests.remove(0);
}
if (item != nullptr)
queue->Execute(item);
}
}
queue->hRequestQueueThread = nullptr;
return 0;
}
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