void run() {
if( cmdLine.syncdelay == 0 )
log() << "warning: --syncdelay 0 is not recommended and can have strange performance" << endl;
else if( cmdLine.syncdelay == 1 )
log() << "--syncdelay 1" << endl;
else if( cmdLine.syncdelay != 60 )
log(1) << "--syncdelay " << cmdLine.syncdelay << endl;
int time_flushing = 0;
while ( ! inShutdown() ) {
flushDiagLog();
if ( cmdLine.syncdelay == 0 ) {
// in case at some point we add an option to change at runtime
sleepsecs(5);
continue;
}
sleepmillis( (long long) std::max(0.0, (cmdLine.syncdelay * 1000) - time_flushing) );
if ( inShutdown() ) {
// occasional issue trying to flush during shutdown when sleep interrupted
break;
}
Date_t start = jsTime();
int numFiles = MemoryMappedFile::flushAll( true );
time_flushing = (int) (jsTime() - start);
globalFlushCounters.flushed(time_flushing);
log(1) << "flushing mmap took " << time_flushing << "ms " << " for " << numFiles << " files" << endl;
}
}
/** also called by ntservice.cpp */
void shutdownServer() {
log() << "shutdown: going to close listening sockets..." << endl;
ListeningSockets::get()->closeAll();
log() << "shutdown: going to flush diaglog..." << endl;
flushDiagLog();
/* must do this before unmapping mem or you may get a seg fault */
log() << "shutdown: going to close sockets..." << endl;
boost::thread close_socket_thread( boost::bind(MessagingPort::closeAllSockets, 0) );
// wait until file preallocation finishes
// we would only hang here if the file_allocator code generates a
// synchronous signal, which we don't expect
log() << "shutdown: waiting for fs preallocator..." << endl;
FileAllocator::get()->waitUntilFinished();
if( cmdLine.dur ) {
log() << "shutdown: lock for final commit..." << endl;
{
int n = 10;
while( 1 ) {
// we may already be in a read lock from earlier in the call stack, so do read lock here
// to be consistent with that.
readlocktry w("", 20000);
if( w.got() ) {
log() << "shutdown: final commit..." << endl;
getDur().commitNow();
break;
}
if( --n <= 0 ) {
log() << "shutdown: couldn't acquire write lock, aborting" << endl;
mongoAbort("couldn't acquire write lock");
}
log() << "shutdown: waiting for write lock..." << endl;
}
}
MemoryMappedFile::flushAll(true);
}
log() << "shutdown: closing all files..." << endl;
stringstream ss3;
MemoryMappedFile::closeAllFiles( ss3 );
log() << ss3.str() << endl;
if( cmdLine.dur ) {
dur::journalCleanup(true);
}
#if !defined(__sunos__)
if ( lockFile ) {
log() << "shutdown: removing fs lock..." << endl;
/* This ought to be an unlink(), but Eliot says the last
time that was attempted, there was a race condition
with acquirePathLock(). */
#ifdef _WIN32
if( _chsize( lockFile , 0 ) )
log() << "couldn't remove fs lock " << WSAGetLastError() << endl;
CloseHandle(lockFileHandle);
#else
if( ftruncate( lockFile , 0 ) )
log() << "couldn't remove fs lock " << errnoWithDescription() << endl;
flock( lockFile, LOCK_UN );
#endif
}
#endif
}
