Package org.bukkit.scheduler

Interface BukkitScheduler

public interface BukkitScheduler

  • Method Details

    • scheduleSyncDelayedTask

      int scheduleSyncDelayedTask(@NotNull Plugin plugin, @NotNull Runnable task, long delay)
      Schedules a once off task to occur after a delay.

      This task will be executed by the main server thread.

      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      delay - Delay in server ticks before executing task
      Returns:
      Task id number (-1 if scheduling failed)

    • scheduleSyncDelayedTask

      @Deprecated int scheduleSyncDelayedTask(@NotNull Plugin plugin, @NotNull BukkitRunnable task, long delay)
      Deprecated.
      Use BukkitRunnable.runTaskLater(Plugin, long)
      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      delay - Delay in server ticks before executing task
      Returns:
      Task id number (-1 if scheduling failed)

    • scheduleSyncDelayedTask

      int scheduleSyncDelayedTask(@NotNull Plugin plugin, @NotNull Runnable task)
      Schedules a once off task to occur as soon as possible.

      This task will be executed by the main server thread.

      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      Returns:
      Task id number (-1 if scheduling failed)

    • scheduleSyncDelayedTask

      @Deprecated int scheduleSyncDelayedTask(@NotNull Plugin plugin, @NotNull BukkitRunnable task)
      Deprecated.
      Use BukkitRunnable.runTask(Plugin)
      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      Returns:
      Task id number (-1 if scheduling failed)

    • scheduleSyncRepeatingTask

      int scheduleSyncRepeatingTask(@NotNull Plugin plugin, @NotNull Runnable task, long delay, long period)
      Schedules a repeating task.

      This task will be executed by the main server thread.

      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      delay - Delay in server ticks before executing first repeat
      period - Period in server ticks of the task
      Returns:
      Task id number (-1 if scheduling failed)

    • scheduleSyncRepeatingTask

      @Deprecated int scheduleSyncRepeatingTask(@NotNull Plugin plugin, @NotNull BukkitRunnable task, long delay, long period)
      Deprecated.
      Use BukkitRunnable.runTaskTimer(Plugin, long, long)
      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      delay - Delay in server ticks before executing first repeat
      period - Period in server ticks of the task
      Returns:
      Task id number (-1 if scheduling failed)

    • scheduleAsyncDelayedTask

      @Deprecated int scheduleAsyncDelayedTask(@NotNull Plugin plugin, @NotNull Runnable task, long delay)
      Deprecated.
      This name is misleading, as it does not schedule "a sync" task, but rather, "an async" task
      Asynchronous tasks should never access any API in Bukkit. Great care should be taken to assure the thread-safety of asynchronous tasks.

      Schedules a once off task to occur after a delay. This task will be executed by a thread managed by the scheduler.

      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      delay - Delay in server ticks before executing task
      Returns:
      Task id number (-1 if scheduling failed)

    • scheduleAsyncDelayedTask

      @Deprecated int scheduleAsyncDelayedTask(@NotNull Plugin plugin, @NotNull Runnable task)
      Deprecated.
      This name is misleading, as it does not schedule "a sync" task, but rather, "an async" task
      Asynchronous tasks should never access any API in Bukkit. Great care should be taken to assure the thread-safety of asynchronous tasks.

      Schedules a once off task to occur as soon as possible. This task will be executed by a thread managed by the scheduler.

      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      Returns:
      Task id number (-1 if scheduling failed)

    • scheduleAsyncRepeatingTask

      @Deprecated int scheduleAsyncRepeatingTask(@NotNull Plugin plugin, @NotNull Runnable task, long delay, long period)
      Deprecated.
      This name is misleading, as it does not schedule "a sync" task, but rather, "an async" task
      Asynchronous tasks should never access any API in Bukkit. Great care should be taken to assure the thread-safety of asynchronous tasks.

      Schedules a repeating task. This task will be executed by a thread managed by the scheduler.

      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      delay - Delay in server ticks before executing first repeat
      period - Period in server ticks of the task
      Returns:
      Task id number (-1 if scheduling failed)

    • callSyncMethod

      @NotNull <T> Future<T> callSyncMethod(@NotNull Plugin plugin, @NotNull Callable<T> task)
      Calls a method on the main thread and returns a Future object. This task will be executed by the main server thread.
      • Note: The Future.get() methods must NOT be called from the main thread.
      • Note2: There is at least an average of 10ms latency until the isDone() method returns true.
      Type Parameters:
      T - The callable's return type
      Parameters:
      plugin - Plugin that owns the task
      task - Task to be executed
      Returns:
      Future Future object related to the task

    • cancelTask

      void cancelTask(int taskId)
      Removes task from scheduler.
      Parameters:
      taskId - Id number of task to be removed

    • cancelTasks

      void cancelTasks(@NotNull Plugin plugin)
      Removes all tasks associated with a particular plugin from the scheduler.
      Parameters:
      plugin - Owner of tasks to be removed

    • isCurrentlyRunning

      boolean isCurrentlyRunning(int taskId)
      Check if the task currently running.

      A repeating task might not be running currently, but will be running in the future. A task that has finished, and does not repeat, will not be running ever again.

      Explicitly, a task is running if there exists a thread for it, and that thread is alive.

      Parameters:
      taskId - The task to check.

      Returns:
      If the task is currently running.

    • isQueued

      boolean isQueued(int taskId)
      Check if the task queued to be run later.

      If a repeating task is currently running, it might not be queued now but could be in the future. A task that is not queued, and not running, will not be queued again.

      Parameters:
      taskId - The task to check.

      Returns:
      If the task is queued to be run.

    • getActiveWorkers

      @NotNull List<BukkitWorker> getActiveWorkers()
      Returns a list of all active workers.

      This list contains asynch tasks that are being executed by separate threads.

      Returns:
      Active workers

    • getPendingTasks

      @NotNull List<BukkitTask> getPendingTasks()
      Returns a list of all pending tasks. The ordering of the tasks is not related to their order of execution.
      Returns:
      Active workers

    • runTask

      @NotNull BukkitTask runTask(@NotNull Plugin plugin, @NotNull Runnable task) throws IllegalArgumentException
      Returns a task that will run on the next server tick.
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTask

      void runTask(@NotNull Plugin plugin, @NotNull Consumer<? super BukkitTask> task) throws IllegalArgumentException
      Returns a task that will run on the next server tick.
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTask

      @Deprecated @NotNull BukkitTask runTask(@NotNull Plugin plugin, @NotNull BukkitRunnable task) throws IllegalArgumentException
      Deprecated.
      Use BukkitRunnable.runTask(Plugin)
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskAsynchronously

      @NotNull BukkitTask runTaskAsynchronously(@NotNull Plugin plugin, @NotNull Runnable task) throws IllegalArgumentException
      Asynchronous tasks should never access any API in Bukkit. Great care should be taken to assure the thread-safety of asynchronous tasks.

      Returns a task that will run asynchronously.

      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskAsynchronously

      void runTaskAsynchronously(@NotNull Plugin plugin, @NotNull Consumer<? super BukkitTask> task) throws IllegalArgumentException
      Asynchronous tasks should never access any API in Bukkit. Great care should be taken to assure the thread-safety of asynchronous tasks.

      Returns a task that will run asynchronously.

      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskAsynchronously

      @Deprecated @NotNull BukkitTask runTaskAsynchronously(@NotNull Plugin plugin, @NotNull BukkitRunnable task) throws IllegalArgumentException
      Deprecated.
      Use BukkitRunnable.runTaskAsynchronously(Plugin)
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskLater

      @NotNull BukkitTask runTaskLater(@NotNull Plugin plugin, @NotNull Runnable task, long delay) throws IllegalArgumentException
      Returns a task that will run after the specified number of server ticks.
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskLater

      void runTaskLater(@NotNull Plugin plugin, @NotNull Consumer<? super BukkitTask> task, long delay) throws IllegalArgumentException
      Returns a task that will run after the specified number of server ticks.
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskLater

      @Deprecated @NotNull BukkitTask runTaskLater(@NotNull Plugin plugin, @NotNull BukkitRunnable task, long delay) throws IllegalArgumentException
      Deprecated.
      Use BukkitRunnable.runTaskLater(Plugin, long)
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskLaterAsynchronously

      @NotNull BukkitTask runTaskLaterAsynchronously(@NotNull Plugin plugin, @NotNull Runnable task, long delay) throws IllegalArgumentException
      Asynchronous tasks should never access any API in Bukkit. Great care should be taken to assure the thread-safety of asynchronous tasks.

      Returns a task that will run asynchronously after the specified number of server ticks.

      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskLaterAsynchronously

      void runTaskLaterAsynchronously(@NotNull Plugin plugin, @NotNull Consumer<? super BukkitTask> task, long delay) throws IllegalArgumentException
      Asynchronous tasks should never access any API in Bukkit. Great care should be taken to assure the thread-safety of asynchronous tasks.

      Returns a task that will run asynchronously after the specified number of server ticks.

      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskLaterAsynchronously

      @Deprecated @NotNull BukkitTask runTaskLaterAsynchronously(@NotNull Plugin plugin, @NotNull BukkitRunnable task, long delay) throws IllegalArgumentException
      Deprecated.
      Use BukkitRunnable.runTaskLaterAsynchronously(Plugin, long)
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskTimer

      @NotNull BukkitTask runTaskTimer(@NotNull Plugin plugin, @NotNull Runnable task, long delay, long period) throws IllegalArgumentException
      Returns a task that will repeatedly run until cancelled, starting after the specified number of server ticks.
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task
      period - the ticks to wait between runs
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskTimer

      void runTaskTimer(@NotNull Plugin plugin, @NotNull Consumer<? super BukkitTask> task, long delay, long period) throws IllegalArgumentException
      Returns a task that will repeatedly run until cancelled, starting after the specified number of server ticks.
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task
      period - the ticks to wait between runs
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskTimer

      @Deprecated @NotNull BukkitTask runTaskTimer(@NotNull Plugin plugin, @NotNull BukkitRunnable task, long delay, long period) throws IllegalArgumentException
      Deprecated.
      Use BukkitRunnable.runTaskTimer(Plugin, long, long)
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task
      period - the ticks to wait between runs
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskTimerAsynchronously

      @NotNull BukkitTask runTaskTimerAsynchronously(@NotNull Plugin plugin, @NotNull Runnable task, long delay, long period) throws IllegalArgumentException
      Asynchronous tasks should never access any API in Bukkit. Great care should be taken to assure the thread-safety of asynchronous tasks.

      Returns a task that will repeatedly run asynchronously until cancelled, starting after the specified number of server ticks.

      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task for the first time
      period - the ticks to wait between runs
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskTimerAsynchronously

      void runTaskTimerAsynchronously(@NotNull Plugin plugin, @NotNull Consumer<? super BukkitTask> task, long delay, long period) throws IllegalArgumentException
      Asynchronous tasks should never access any API in Bukkit. Great care should be taken to assure the thread-safety of asynchronous tasks.

      Returns a task that will repeatedly run asynchronously until cancelled, starting after the specified number of server ticks.

      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task for the first time
      period - the ticks to wait between runs
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null

    • runTaskTimerAsynchronously

      @Deprecated @NotNull BukkitTask runTaskTimerAsynchronously(@NotNull Plugin plugin, @NotNull BukkitRunnable task, long delay, long period) throws IllegalArgumentException
      Deprecated.
      Use BukkitRunnable.runTaskTimerAsynchronously(Plugin, long, long)
      Parameters:
      plugin - the reference to the plugin scheduling task
      task - the task to be run
      delay - the ticks to wait before running the task for the first time
      period - the ticks to wait between runs
      Returns:
      a BukkitTask that contains the id number
      Throws:
      IllegalArgumentException - if plugin is null
      IllegalArgumentException - if task is null