private static void MaybeSendSigprof(int rss, long gc)
{
bool send_sigprof = false;
try {
if (prev_rss == -1 || prev_gc == -1)
{
return;
}
// Log RSS increases of at least 5 megs or 5%
if (rss - prev_rss >= 5 * 1024 ||
(double)rss / (double)prev_rss >= 1.05)
{
send_sigprof = true;
}
// Log total object size increase of at least 10%.
if ((double)gc / (double)prev_gc >= 1.1)
{
send_sigprof = true;
}
} finally {
prev_rss = rss;
prev_gc = gc;
if (send_sigprof)
{
Log.Debug("Suspicious memory size change detected. Sending SIGPROF to ourself ({0})", sigprof_count++);
Mono.Unix.Native.Syscall.kill(System.Diagnostics.Process.GetCurrentProcess().Id, Mono.Unix.Native.Signum.SIGPROF);
}
}
}
private static void HandleSignal(int signal)
{
Logger.Log.Debug("Handling signal {0} ({1})", signal, (Mono.Unix.Native.Signum)signal);
// Pass the signals to the helper too.
GLib.Idle.Add(new GLib.IdleHandler(delegate()
{
RemoteIndexer.SignalRemoteIndexer((Mono.Unix.Native.Signum)signal);
return(false);
}));
// If we get SIGUSR1, turn the debugging level up.
if ((Mono.Unix.Native.Signum)signal == Mono.Unix.Native.Signum.SIGUSR1)
{
LogLevel old_level = Log.Level;
Log.Level = LogLevel.Debug;
Log.Debug("Moving from log level {0} to Debug", old_level);
return;
}
else if ((Mono.Unix.Native.Signum)signal == Mono.Unix.Native.Signum.SIGUSR2)
{
// Debugging hook for beagrepd
QueryDriver.DebugHook();
LuceneCommon.DebugHook();
return;
}
Logger.Log.Debug("Initiating shutdown in response to signal.");
Shutdown.BeginShutdown();
}
private static void HandleSignal(int signal)
{
Log.Warn("Handling signal {0} ({1})", signal, (Mono.Unix.Native.Signum)signal);
// If we get SIGUSR1, turn the debugging level up.
if ((Mono.Unix.Native.Signum)signal == Mono.Unix.Native.Signum.SIGUSR1)
{
LogLevel old_level = Log.Level;
Log.Level = LogLevel.Debug;
Log.Debug("Moving from log level {0} to Debug", old_level);
}
string span = StringFu.TimeSpanToString(DateTime.Now - last_activity);
if (CurrentDisplayUri == null)
{
Log.Warn("Filtering status ({0} ago): no document is currently being filtered.", span);
}
else if (CurrentFilter == null)
{
Log.Warn("Filtering status ({0} ago): determining filter and extracting properties for {1} ({2})", span, CurrentDisplayUri, CurrentContentUri);
}
else
{
Log.Warn("Filtering status ({0} ago): extracting text from {1} ({2}) with {3}", span, CurrentDisplayUri, CurrentContentUri, CurrentFilter);
}
// Don't shut down on information signals (SIGUSR1 and SIGUSR2)
if ((Mono.Unix.Native.Signum)signal == Mono.Unix.Native.Signum.SIGUSR1 ||
(Mono.Unix.Native.Signum)signal == Mono.Unix.Native.Signum.SIGUSR2)
{
return;
}
Logger.Log.Debug("Initiating shutdown in response to signal.");
Shutdown.BeginShutdown();
}
public static bool StartupProcess()
{
// Profile our initialization
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
// Fire up our server
if (!StartServer())
{
if (!arg_replace)
{
Logger.Log.Error("Could not set up the listener for beagrep requests. "
+ "There is probably another beagrepd instance running. "
+ "Use --replace to replace the running service");
Environment.Exit(1);
}
ReplaceExisting();
}
// Set up out-of-process indexing
LuceneQueryable.IndexerHook = new LuceneQueryable.IndexerCreator(RemoteIndexer.NewRemoteIndexer);
Config config = Conf.Get(Conf.Names.DaemonConfig);
// Initialize synchronization to keep the indexes local if PathFinder.StorageDir
// is on a non-block device, or if BEAGREP_SYNCHRONIZE_LOCALLY is set
if ((!SystemInformation.IsPathOnBlockDevice(PathFinder.StorageDir) &&
config.GetOption(Conf.Names.IndexSynchronization, true)) ||
Environment.GetEnvironmentVariable("BEAGREP_SYNCHRONIZE_LOCALLY") != null)
{
IndexSynchronization.Initialize();
}
// Start the query driver.
Logger.Log.Debug("Starting QueryDriver");
QueryDriver.Start();
// Start our battery monitor so we can shut down the
// scheduler if needed.
BatteryMonitor.Init();
bool initially_on_battery = !BatteryMonitor.UsingAC && !config.GetOption(Conf.Names.IndexOnBattery, false);
// Start the Global Scheduler thread
if (!arg_disable_scheduler)
{
if (!initially_on_battery)
{
Logger.Log.Debug("Starting Scheduler thread");
Scheduler.Global.Start();
}
else
{
Log.Debug("Beagrep started on battery, not starting scheduler thread");
}
}
// Start our Inotify threads
Inotify.Start();
// Test if the FileAdvise stuff is working: This will print a
// warning if not. The actual advice calls will fail silently.
FileAdvise.TestAdvise();
#if ENABLE_AVAHI
zeroconf = new Beagrep.Daemon.Network.Zeroconf();
#endif
Conf.WatchForUpdates();
stopwatch.Stop();
Logger.Log.Debug("Daemon initialization finished after {0}", stopwatch);
SystemInformation.LogMemoryUsage();
if (arg_indexing_test_mode)
{
Thread.Sleep(1000); // Ugly paranoia: wait a second for the backends to settle.
Logger.Log.Debug("Running in indexing test mode");
Scheduler.Global.EmptyQueueEvent += OnEmptySchedulerQueue;
Scheduler.Global.Add(null); // pulse the scheduler
}
return(false);
}
private static void DoMain(string [] args)
{
SystemInformation.SetProcessName("beagrepd-helper");
bool run_by_hand = (Environment.GetEnvironmentVariable("BEAGREP_RUN_HELPER_BY_HAND") != null);
bool log_in_fg = (Environment.GetEnvironmentVariable("BEAGREP_LOG_IN_THE_FOREGROUND_PLEASE") != null);
bool debug = false, disable_textcache = false;
foreach (string arg in args)
{
if (arg == "--disable-text-cache")
{
disable_textcache = true;
}
else if (arg == "--debug")
{
debug = true;
}
}
last_activity = DateTime.Now;
Log.Initialize(PathFinder.LogDir,
"IndexHelper",
debug ? LogLevel.Debug : LogLevel.Warn,
run_by_hand || log_in_fg);
Log.Always("Starting Index Helper process (version {0})", ExternalStringsHack.Version);
Log.Always("Running on {0}", SystemInformation.MonoRuntimeVersion);
Log.Always("Extended attributes are {0}", ExtendedAttribute.Supported ? "supported" : "not supported");
Log.Always("Command Line: {0}",
Environment.CommandLine != null ? Environment.CommandLine : "(null)");
if (disable_textcache)
{
Log.Always("Text cache is disabled.");
}
// Initialize GObject type system
g_type_init();
// Set the IO priority to idle, nice ourselves, and set
// a batch scheduling policy so we that we play nice
// on the system
if (Environment.GetEnvironmentVariable("BEAGREP_EXERCISE_THE_DOG") != null)
{
Log.Always("BEAGREP_EXERCISE_THE_DOG is set");
}
Server.Init();
#if MONO_1_9
Shutdown.SetupSignalHandlers(new Shutdown.SignalHandler(HandleSignal));
#else
SetupSignalHandlers();
#endif
Shutdown.ShutdownEvent += OnShutdown;
main_loop = new MainLoop();
Shutdown.RegisterMainLoop(main_loop);
// Start the server
Log.Debug("Starting messaging server");
bool server_has_been_started = false;
try {
server = new Server("socket-helper", true, false);
server.Start();
server_has_been_started = true;
} catch (InvalidOperationException ex) {
Logger.Log.Error(ex, "Couldn't start server. Exiting immediately.");
}
if (server_has_been_started)
{
// Whether we should generate heap-shot snapshots
heap_shot = (Environment.GetEnvironmentVariable("_HEY_LETS_DO_A_HEAP_SHOT") != null);
if (!run_by_hand)
{
// Start the monitor thread, which keeps an eye on memory usage and idle time.
ExceptionHandlingThread.Start(new ThreadStart(MemoryAndIdleMonitorWorker));
// Start a thread that watches the daemon and begins a shutdown
// if it terminates.
ExceptionHandlingThread.Start(new ThreadStart(DaemonMonitorWorker));
}
// Start the main loop
main_loop.Run();
ExceptionHandlingThread.JoinAllThreads();
// If we placed our sockets in a temp directory, try to clean it up
// Note: this may fail because the daemon is still running
if (PathFinder.GetRemoteStorageDir(false) != PathFinder.StorageDir)
{
try {
Directory.Delete(PathFinder.GetRemoteStorageDir(false));
} catch (IOException) { }
}
Log.Always("Index helper process shut down cleanly.");
}
}
private static void MemoryAndIdleMonitorWorker()
{
int vmrss_original = SystemInformation.VmRss;
const double max_idle_time = 30; // minutes
const double threshold = 5.0;
const int max_request_count = 0;
int last_vmrss = 0;
while (!Shutdown.ShutdownRequested)
{
double idle_time;
idle_time = (DateTime.Now - last_activity).TotalMinutes;
if (idle_time > max_idle_time && RemoteIndexerExecutor.Count > 0)
{
Logger.Log.Debug("No activity for {0:0.0} minutes, shutting down", idle_time);
Shutdown.BeginShutdown();
return;
}
// Check resident memory usage
int vmrss = SystemInformation.VmRss;
double size = vmrss / (double)vmrss_original;
if (last_vmrss != 0 && vmrss != last_vmrss)
{
Logger.Log.Debug("Helper Size: VmRSS={0:0.0} MB, size={1:0.00}, {2:0.0}%",
vmrss / 1024.0, size, 100.0 * (size - 1) / (threshold - 1));
double increase = vmrss / (double)last_vmrss;
if (heap_shot && increase > 1.20)
{
Log.Debug("Large memory increase detected. Sending SIGPROF to ourself.");
Mono.Unix.Native.Syscall.kill(System.Diagnostics.Process.GetCurrentProcess().Id, Mono.Unix.Native.Signum.SIGPROF);
}
}
last_vmrss = vmrss;
if (size > threshold ||
(max_request_count > 0 && RemoteIndexerExecutor.Count > max_request_count))
{
if (RemoteIndexerExecutor.Count > 0)
{
Logger.Log.Debug("Process too big, shutting down!");
Shutdown.BeginShutdown();
return;
}
else
{
// Paranoia: don't shut down if we haven't done anything yet
Logger.Log.Debug("Deferring shutdown until we've actually done something.");
Thread.Sleep(1000);
}
}
else
{
Thread.Sleep(3000);
}
}
}
