142 lines
3.5 KiB
C++
142 lines
3.5 KiB
C++
/**
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* @file _httppolicy.cpp
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* @brief Internal definitions of the Http policy thread
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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 "_httppolicy.h"
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#include "_httpoprequest.h"
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#include "_httpservice.h"
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#include "_httplibcurl.h"
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namespace LLCore
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{
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HttpPolicy::HttpPolicy(HttpService * service)
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: mService(service)
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{
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for (int policy_class(0); policy_class < HttpRequest::POLICY_CLASS_LIMIT; ++policy_class)
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{
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mReadyInClass[policy_class] = 0;
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}
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}
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HttpPolicy::~HttpPolicy()
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{
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for (int policy_class(0); policy_class < HttpRequest::POLICY_CLASS_LIMIT; ++policy_class)
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{
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HttpReadyQueue & readyq(mReadyQueue[policy_class]);
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while (! readyq.empty())
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{
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HttpOpRequest * op(readyq.top());
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op->cancel();
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op->release();
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mReadyInClass[policy_class]--;
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readyq.pop();
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}
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}
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mService = NULL;
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}
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void HttpPolicy::addOp(HttpOpRequest * op)
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{
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const int policy_class(op->mReqPolicy);
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mReadyQueue[policy_class].push(op);
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++mReadyInClass[policy_class];
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}
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HttpService::ELoopSpeed HttpPolicy::processReadyQueue()
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{
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HttpService::ELoopSpeed result(HttpService::REQUEST_SLEEP);
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HttpLibcurl * pTransport(mService->getTransport());
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for (int policy_class(0); policy_class < HttpRequest::POLICY_CLASS_LIMIT; ++policy_class)
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{
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HttpReadyQueue & readyq(mReadyQueue[policy_class]);
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int active(pTransport->getActiveCountInClass(policy_class));
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int needed(8 - active);
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if (needed > 0 && mReadyInClass[policy_class] > 0)
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{
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// Scan ready queue for requests that match policy
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while (! readyq.empty() && needed > 0 && mReadyInClass[policy_class] > 0)
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{
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HttpOpRequest * op(readyq.top());
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readyq.pop();
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op->stageFromReady(mService);
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op->release();
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--mReadyInClass[policy_class];
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--needed;
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}
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}
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if (! readyq.empty())
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{
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// If anything is ready, continue looping...
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result = (std::min)(result, HttpService::NORMAL);
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}
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}
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return result;
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}
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bool HttpPolicy::changePriority(HttpHandle handle, HttpRequest::priority_t priority)
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{
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for (int policy_class(0); policy_class < HttpRequest::POLICY_CLASS_LIMIT; ++policy_class)
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{
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HttpReadyQueue::container_type & c(mReadyQueue[policy_class].get_container());
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// Scan ready queue for requests that match policy
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for (HttpReadyQueue::container_type::iterator iter(c.begin()); c.end() != iter;)
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{
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HttpReadyQueue::container_type::iterator cur(iter++);
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if (static_cast<HttpHandle>(*cur) == handle)
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{
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HttpOpRequest * op(*cur);
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c.erase(cur); // All iterators are now invalidated
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op->mReqPriority = priority;
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mReadyQueue[policy_class].push(op); // Re-insert using adapter class
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return true;
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}
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}
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}
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return false;
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}
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} // end namespace LLCore
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