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/**
* Copyright (c) 2011 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "pch.h"
#include "db/pipeline/doc_mem_monitor.h"
#include "util/systeminfo.h"
namespace mongo {
DocMemMonitor::DocMemMonitor(StringWriter *pW) {
/*
Use the default values.
Currently, we warn in log at 5%, and assert at 10%.
*/
size_t errorRam = SystemInfo::getPhysicalRam() / 10;
size_t warnRam = errorRam / 2;
init(pW, warnRam, errorRam);
}
DocMemMonitor::DocMemMonitor(StringWriter *pW,
size_t warnLimit, size_t errorLimit) {
init(pW, warnLimit, errorLimit);
}
void DocMemMonitor::addToTotal(size_t amount) {
totalUsed += amount;
if (!warned) {
if (warnLimit && (totalUsed > warnLimit)) {
stringstream ss;
ss << "warning, 5% of physical RAM used for ";
pWriter->writeString(ss);
ss << endl;
warning() << ss.str();
warned = true;
}
}
if (errorLimit) {
uassert(15944, "terminating request: request heap use exceeded 10% of physical RAM", (totalUsed <= errorLimit));
}
}
void DocMemMonitor::init(StringWriter *pW,
size_t warnLimit, size_t errorLimit) {
this->pWriter = pW;
this->warnLimit = warnLimit;
this->errorLimit = errorLimit;
warned = false;
totalUsed = 0;
}
}
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