157 lines
2.8 KiB
C++
157 lines
2.8 KiB
C++
/**
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* @file _httprequestqueue.cpp
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* @brief
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*
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* $LicenseInfo:firstyear=2012&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2012, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "_httprequestqueue.h"
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#include "_httpoperation.h"
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#include "_mutex.h"
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using namespace LLCoreInt;
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namespace LLCore
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{
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HttpRequestQueue * HttpRequestQueue::sInstance(NULL);
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HttpRequestQueue::HttpRequestQueue()
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: RefCounted(true),
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mQueueStopped(false)
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{
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}
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HttpRequestQueue::~HttpRequestQueue()
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{
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mQueue.clear();
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}
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void HttpRequestQueue::init()
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{
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llassert_always(! sInstance);
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sInstance = new HttpRequestQueue();
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}
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void HttpRequestQueue::term()
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{
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if (sInstance)
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{
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sInstance->release();
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sInstance = NULL;
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}
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}
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HttpStatus HttpRequestQueue::addOp(const HttpRequestQueue::opPtr_t &op)
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{
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bool wake(false);
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{
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HttpScopedLock lock(mQueueMutex);
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if (mQueueStopped)
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{
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// Return op and error to caller
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return HttpStatus(HttpStatus::LLCORE, HE_SHUTTING_DOWN);
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}
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wake = mQueue.empty();
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mQueue.push_back(op);
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}
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if (wake)
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{
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mQueueCV.notify_all();
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}
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return HttpStatus();
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}
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HttpRequestQueue::opPtr_t HttpRequestQueue::fetchOp(bool wait)
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{
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HttpOperation::ptr_t result;
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{
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HttpScopedLock lock(mQueueMutex);
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while (mQueue.empty())
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{
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if (! wait || mQueueStopped)
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return HttpOperation::ptr_t();
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mQueueCV.wait(lock);
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}
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result = mQueue.front();
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mQueue.erase(mQueue.begin());
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}
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// Caller also acquires the reference count
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return result;
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}
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void HttpRequestQueue::fetchAll(bool wait, OpContainer & ops)
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{
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// Not valid putting something back on the queue...
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llassert_always(ops.empty());
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{
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HttpScopedLock lock(mQueueMutex);
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while (mQueue.empty())
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{
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if (! wait || mQueueStopped)
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return;
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mQueueCV.wait(lock);
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}
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mQueue.swap(ops);
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}
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// Caller also acquires the reference counts on each op.
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return;
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}
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void HttpRequestQueue::wakeAll()
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{
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mQueueCV.notify_all();
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}
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void HttpRequestQueue::stopQueue()
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{
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{
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HttpScopedLock lock(mQueueMutex);
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mQueueStopped = true;
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wakeAll();
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}
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}
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} // end namespace LLCore
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