95 lines
2.4 KiB
C++
Executable File
95 lines
2.4 KiB
C++
Executable File
/**
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* @file _httpretryqueue.h
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* @brief Internal declaration for the operation retry queue
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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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#ifndef _LLCORE_HTTP_RETRY_QUEUE_H_
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#define _LLCORE_HTTP_RETRY_QUEUE_H_
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#include <queue>
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#include "_httpoprequest.h"
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namespace LLCore
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{
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/// HttpRetryQueue provides a simple priority queue for HttpOpRequest objects.
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///
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/// This uses the priority_queue adaptor class to provide the queue
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/// as well as the ordering scheme while allowing us access to the
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/// raw container if we follow a few simple rules. One of the more
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/// important of those rules is that any iterator becomes invalid
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/// on element erasure. So pay attention.
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///
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/// Threading: not thread-safe. Expected to be used entirely by
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/// a single thread, typically a worker thread of some sort.
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struct HttpOpRetryCompare
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{
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bool operator()(const HttpOpRequest * lhs, const HttpOpRequest * rhs)
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{
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return lhs->mPolicyRetryAt < rhs->mPolicyRetryAt;
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}
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};
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typedef std::priority_queue<HttpOpRequest *,
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std::deque<HttpOpRequest *>,
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LLCore::HttpOpRetryCompare> HttpRetryQueueBase;
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class HttpRetryQueue : public HttpRetryQueueBase
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{
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public:
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HttpRetryQueue()
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: HttpRetryQueueBase()
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{}
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~HttpRetryQueue()
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{}
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protected:
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HttpRetryQueue(const HttpRetryQueue &); // Not defined
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void operator=(const HttpRetryQueue &); // Not defined
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public:
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const container_type & get_container() const
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{
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return c;
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}
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container_type & get_container()
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{
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return c;
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}
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}; // end class HttpRetryQueue
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} // end namespace LLCore
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#endif // _LLCORE_HTTP_RETRY_QUEUE_H_
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