Examples with Sampler com.sk89q.worldguard.util.profiler.SamplerBuilder.Sampler used on opensource projects

Example 1 with Sampler

use of com.sk89q.worldguard.util.profiler.SamplerBuilder.Sampler in project WorldGuard by EngineHub.

the class WorldGuardCommands method profile.

@Command(aliases = { "profile" }, usage = "[-p] [-i <interval>] [-t <thread filter>] [<minutes>]", desc = "Profile the CPU usage of the server", min = 0, max = 1, flags = "t:i:p")
@CommandPermissions("worldguard.profile")
public void profile(final CommandContext args, final Actor sender) throws CommandException, AuthorizationException {
    Predicate<ThreadInfo> threadFilter;
    String threadName = args.getFlag('t');
    final boolean pastebin;
    if (args.hasFlag('p')) {
        sender.checkPermission("worldguard.report.pastebin");
        pastebin = true;
    } else {
        pastebin = false;
    }
    if (threadName == null) {
        threadFilter = new ThreadIdFilter(Thread.currentThread().getId());
    } else if (threadName.equals("*")) {
        threadFilter = thread -> true;
    } else {
        threadFilter = new ThreadNameFilter(threadName);
    }
    int minutes;
    if (args.argsLength() == 0) {
        minutes = 5;
    } else {
        minutes = args.getInteger(0);
        if (minutes < 1) {
            throw new CommandException("You must run the profile for at least 1 minute.");
        } else if (minutes > 10) {
            throw new CommandException("You can profile for, at maximum, 10 minutes.");
        }
    }
    int interval = 20;
    if (args.hasFlag('i')) {
        interval = args.getFlagInteger('i');
        if (interval < 1 || interval > 100) {
            throw new CommandException("Interval must be between 1 and 100 (in milliseconds)");
        }
        if (interval < 10) {
            sender.printDebug("Note: A low interval may cause additional slowdown during profiling.");
        }
    }
    Sampler sampler;
    synchronized (this) {
        if (activeSampler != null) {
            throw new CommandException("A profile is currently in progress! Please use /wg stopprofile to cancel the current profile.");
        }
        SamplerBuilder builder = new SamplerBuilder();
        builder.setThreadFilter(threadFilter);
        builder.setRunTime(minutes, TimeUnit.MINUTES);
        builder.setInterval(interval);
        sampler = activeSampler = builder.start();
    }
    sender.print(TextComponent.of("Starting CPU profiling. Results will be available in " + minutes + " minutes.", TextColor.LIGHT_PURPLE).append(TextComponent.newline()).append(TextComponent.of("Use ", TextColor.GRAY)).append(TextComponent.of("/wg stopprofile", TextColor.AQUA).clickEvent(ClickEvent.of(ClickEvent.Action.SUGGEST_COMMAND, "/wg stopprofile"))).append(TextComponent.of(" at any time to cancel CPU profiling.", TextColor.GRAY)));
    worldGuard.getSupervisor().monitor(FutureForwardingTask.create(sampler.getFuture(), "CPU profiling for " + minutes + " minutes", sender));
    sampler.getFuture().addListener(() -> {
        synchronized (WorldGuardCommands.this) {
            activeSampler = null;
        }
    }, MoreExecutors.directExecutor());
    Futures.addCallback(sampler.getFuture(), new FutureCallback<>() {

        @Override
        public void onSuccess(Sampler result) {
            String output = result.toString();
            try {
                File dest = new File(worldGuard.getPlatform().getConfigDir().toFile(), "profile.txt");
                Files.write(output, dest, StandardCharsets.UTF_8);
                sender.print("CPU profiling data written to " + dest.getAbsolutePath());
            } catch (IOException e) {
                sender.printError("Failed to write CPU profiling data: " + e.getMessage());
            }
            if (pastebin) {
                ActorCallbackPaste.pastebin(worldGuard.getSupervisor(), sender, output, "Profile result: %s.profile");
            }
        }

        @Override
        public void onFailure(Throwable throwable) {
        }
    }, MoreExecutors.directExecutor());
}