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e174696351
EM and PP are most resource-hungry runtimes.
The merge enables to control their cummulative
resource consumption, thread allocation + enables
zero-copy data exchange b/w local EM and PP facilities.
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
/* Copyright (C) 2022 MariaDB Corporation
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <thread>
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#include "rssmonfcn.h"
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#include "serviceexemgr.h"
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namespace exemgr
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{
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void RssMonFcn::operator()() const
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{
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logging::Logger& msgLog = globServiceExeMgr->getLogger();
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auto* statementsRunningCount = globServiceExeMgr->getStatementsRunningCount();
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for (;;)
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{
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size_t rssMb = rss();
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size_t pct = rssMb * 100 / fMemTotal;
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if (pct > fMaxPct)
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{
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if (fMaxPct >= 95)
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{
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std::cerr << "Too much memory allocated!" << std::endl;
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logging::Message::Args args;
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args.add((int)pct);
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args.add((int)fMaxPct);
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msgLog.logMessage(logging::LOG_TYPE_CRITICAL, ServiceExeMgr::logRssTooBig, args, logging::LoggingID(16));
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exit(1);
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}
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if (statementsRunningCount->cur() == 0)
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{
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std::cerr << "Too much memory allocated!" << std::endl;
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logging::Message::Args args;
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args.add((int)pct);
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args.add((int)fMaxPct);
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msgLog.logMessage(logging::LOG_TYPE_WARNING, ServiceExeMgr::logRssTooBig, args, logging::LoggingID(16));
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exit(1);
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}
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std::cerr << "Too much memory allocated, but stmts running" << std::endl;
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}
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// Update sessionMemMap entries lower than current mem % use
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globServiceExeMgr->updateSessionMap(pct);
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pause_();
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}
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}
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void startRssMon(size_t maxPct, int pauseSeconds)
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{
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new std::thread(RssMonFcn(maxPct, pauseSeconds));
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}
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} // namespace
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