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/** @file common.cpp
Common code for server binaries (mongos, mongod, test).
Nothing used by driver should be here.
*/
/*
* Copyright (C) 2010 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 "concurrency.h"
#include "jsobjmanipulator.h"
/**
* this just has globals
*/
namespace mongo {
/** called by mongos, mongod, test. do not call from clients and such.
invoked before about everything except global var construction.
*/
void doPreServerStartupInits() {
#if defined(RLIMIT_NPROC) && defined(RLIMIT_NOFILE)
//Check that # of files rlmit > 1000 , and # of processes > # of files/2
const unsigned int minNumFiles = 1000;
const double filesToProcsRatio = 2.0;
struct rlimit rlnproc;
struct rlimit rlnofile;
if(!getrlimit(RLIMIT_NPROC,&rlnproc) && !getrlimit(RLIMIT_NOFILE,&rlnofile)){
if(rlnofile.rlim_cur < minNumFiles){
log() << "Warning: soft rlimits too low. Number of files is " << rlnofile.rlim_cur << ", should be at least " << minNumFiles << endl;
}
if(rlnproc.rlim_cur < rlnofile.rlim_cur/filesToProcsRatio){
log() << "Warning: soft rlimits too low. " << rlnproc.rlim_cur << " processes, " << rlnofile.rlim_cur << " files. Number of processes should be at least "<< 1/filesToProcsRatio << " times number of files." << endl;
}
}
else{
log() << "Warning: getrlimit failed" << endl;
}
#endif
}
NOINLINE_DECL OpTime OpTime::skewed() {
bool toLog = false;
ONCE toLog = true;
RARELY toLog = true;
last.i++;
if ( last.i & 0x80000000 )
toLog = true;
if ( toLog ) {
log() << "clock skew detected prev: " << last.secs << " now: " << (unsigned) time(0) << endl;
}
if ( last.i & 0x80000000 ) {
log() << "error large clock skew detected, shutting down" << endl;
throw ClockSkewException();
}
return last;
}
}
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