com.bumptech.glide.load.engine.executor

Class GlideExecutor

java.lang.Object

java.util.concurrent.AbstractExecutorService

java.util.concurrent.ThreadPoolExecutor

com.bumptech.glide.load.engine.executor.GlideExecutor

All Implemented Interfaces:

Executor, ExecutorService

public final class GlideExecutor
extends ThreadPoolExecutor

A prioritized ThreadPoolExecutor for running jobs in Glide.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GlideExecutor.UncaughtThrowableStrategy A strategy for handling unexpected and uncaught Throwables thrown by futures run on the pool.

Nested classes/interfaces inherited from class java.util.concurrent.ThreadPoolExecutor

ThreadPoolExecutor.AbortPolicy, ThreadPoolExecutor.CallerRunsPolicy, ThreadPoolExecutor.DiscardOldestPolicy, ThreadPoolExecutor.DiscardPolicy

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_DISK_CACHE_EXECUTOR_NAME The default thread name prefix for executors used to load/decode/transform data found in Glide's cache.
static int	DEFAULT_DISK_CACHE_EXECUTOR_THREADS The default thread count for executors used to load/decode/transform data found in Glide's cache.
static String	DEFAULT_SOURCE_EXECUTOR_NAME The default thread name prefix for executors used to load/decode/transform data not found in cache.

Method Summary

Modifier and Type	Method and Description
static int	calculateBestThreadCount() Determines the number of cores available on the device.
void	execute(Runnable command)
static GlideExecutor	newDiskCacheExecutor() Returns a new fixed thread pool with the default thread count returned from calculateBestThreadCount(), the DEFAULT_DISK_CACHE_EXECUTOR_NAME thread name prefix, and the GlideExecutor.UncaughtThrowableStrategy.DEFAULT uncaught throwable strategy.
static GlideExecutor	newDiskCacheExecutor(int threadCount, String name, GlideExecutor.UncaughtThrowableStrategy uncaughtThrowableStrategy) Returns a new fixed thread pool with the given thread count, thread name prefix, and GlideExecutor.UncaughtThrowableStrategy.
static GlideExecutor	newSourceExecutor() Returns a new fixed thread pool with the default thread count returned from calculateBestThreadCount(), the DEFAULT_SOURCE_EXECUTOR_NAME thread name prefix, and the GlideExecutor.UncaughtThrowableStrategy.DEFAULT uncaught throwable strategy.
static GlideExecutor	newSourceExecutor(int threadCount, String name, GlideExecutor.UncaughtThrowableStrategy uncaughtThrowableStrategy) Returns a new fixed thread pool with the given thread count, thread name prefix, and GlideExecutor.UncaughtThrowableStrategy.
static GlideExecutor	newUnlimitedSourceExecutor() Returns a new unlimited thread pool with zero core thread count to make sure no threads are created by default, SOURCE_UNLIMITED_EXECUTOR_KEEP_ALIVE_TIME_MS keep alive time, the SOURCE_UNLIMITED_EXECUTOR_NAME thread name prefix, the GlideExecutor.UncaughtThrowableStrategy.DEFAULT uncaught throwable strategy, and the SynchronousQueue since using default unbounded blocking queue, for example, PriorityBlockingQueue effectively won't create more than corePoolSize threads.
<T> Future<T>	submit(Callable<T> task)
Future<?>	submit(Runnable task)
<T> Future<T>	submit(Runnable task, T result)

Methods inherited from class java.util.concurrent.ThreadPoolExecutor

afterExecute, allowCoreThreadTimeOut, allowsCoreThreadTimeOut, awaitTermination, beforeExecute, finalize, getActiveCount, getCompletedTaskCount, getCorePoolSize, getKeepAliveTime, getLargestPoolSize, getMaximumPoolSize, getPoolSize, getQueue, getRejectedExecutionHandler, getTaskCount, getThreadFactory, isShutdown, isTerminated, isTerminating, prestartAllCoreThreads, prestartCoreThread, purge, remove, setCorePoolSize, setKeepAliveTime, setMaximumPoolSize, setRejectedExecutionHandler, setThreadFactory, shutdown, shutdownNow, terminated, toString

Methods inherited from class java.util.concurrent.AbstractExecutorService

invokeAll, invokeAll, invokeAny, invokeAny, newTaskFor, newTaskFor

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

DEFAULT_SOURCE_EXECUTOR_NAME

public static final String DEFAULT_SOURCE_EXECUTOR_NAME

The default thread name prefix for executors used to load/decode/transform data not found in cache.

See Also:

Constant Field Values

DEFAULT_DISK_CACHE_EXECUTOR_NAME

public static final String DEFAULT_DISK_CACHE_EXECUTOR_NAME

The default thread name prefix for executors used to load/decode/transform data found in Glide's cache.

See Also:

Constant Field Values

DEFAULT_DISK_CACHE_EXECUTOR_THREADS

public static final int DEFAULT_DISK_CACHE_EXECUTOR_THREADS

The default thread count for executors used to load/decode/transform data found in Glide's cache.

See Also:

Constant Field Values

Method Detail

newDiskCacheExecutor

public static GlideExecutor newDiskCacheExecutor()

Returns a new fixed thread pool with the default thread count returned from calculateBestThreadCount(), the DEFAULT_DISK_CACHE_EXECUTOR_NAME thread name prefix, and the GlideExecutor.UncaughtThrowableStrategy.DEFAULT uncaught throwable strategy.

Disk cache executors do not allow network operations on their threads.

newDiskCacheExecutor

public static GlideExecutor newDiskCacheExecutor(int threadCount,
                                                 String name,
                                                 GlideExecutor.UncaughtThrowableStrategy uncaughtThrowableStrategy)

Returns a new fixed thread pool with the given thread count, thread name prefix, and GlideExecutor.UncaughtThrowableStrategy.

Disk cache executors do not allow network operations on their threads.

Parameters:

threadCount - The number of threads.

name - The prefix for each thread name.

uncaughtThrowableStrategy - The GlideExecutor.UncaughtThrowableStrategy to use to handle uncaught exceptions.

newSourceExecutor

public static GlideExecutor newSourceExecutor()

Returns a new fixed thread pool with the default thread count returned from calculateBestThreadCount(), the DEFAULT_SOURCE_EXECUTOR_NAME thread name prefix, and the GlideExecutor.UncaughtThrowableStrategy.DEFAULT uncaught throwable strategy.

Source executors allow network operations on their threads.

newSourceExecutor

public static GlideExecutor newSourceExecutor(int threadCount,
                                              String name,
                                              GlideExecutor.UncaughtThrowableStrategy uncaughtThrowableStrategy)

Returns a new fixed thread pool with the given thread count, thread name prefix, and GlideExecutor.UncaughtThrowableStrategy.

Source executors allow network operations on their threads.

Parameters:

threadCount - The number of threads.

name - The prefix for each thread name.

uncaughtThrowableStrategy - The GlideExecutor.UncaughtThrowableStrategy to use to handle uncaught exceptions.

newUnlimitedSourceExecutor

public static GlideExecutor newUnlimitedSourceExecutor()

Returns a new unlimited thread pool with zero core thread count to make sure no threads are created by default, SOURCE_UNLIMITED_EXECUTOR_KEEP_ALIVE_TIME_MS keep alive time, the SOURCE_UNLIMITED_EXECUTOR_NAME thread name prefix, the GlideExecutor.UncaughtThrowableStrategy.DEFAULT uncaught throwable strategy, and the SynchronousQueue since using default unbounded blocking queue, for example, PriorityBlockingQueue effectively won't create more than corePoolSize threads. See ThreadPoolExecutor documentation.

Source executors allow network operations on their threads.

execute

public void execute(Runnable command)

Specified by:

execute in interface Executor

Overrides:

execute in class ThreadPoolExecutor

submit

@NonNull
public Future<?> submit(Runnable task)

Specified by:

submit in interface ExecutorService

Overrides:

submit in class AbstractExecutorService

submit

@NonNull
public <T> Future<T> submit(Runnable task,
                                     T result)

Specified by:

submit in interface ExecutorService

Overrides:

submit in class AbstractExecutorService

submit

public <T> Future<T> submit(Callable<T> task)

Specified by:

submit in interface ExecutorService

Overrides:

submit in class AbstractExecutorService

calculateBestThreadCount

public static int calculateBestThreadCount()

Determines the number of cores available on the device.

Runtime.availableProcessors() returns the number of awake cores, which may not be the number of available cores depending on the device's current state. See http://goo.gl/8H670N.