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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
| commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
| tree | f435a8308119effd964b339f76abb83a57c29483 /xpcom/threads/nsIThreadPool.idl | |
| parent | Initial commit. (diff) | |
| download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip | |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'xpcom/threads/nsIThreadPool.idl')
| -rw-r--r-- | xpcom/threads/nsIThreadPool.idl | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/xpcom/threads/nsIThreadPool.idl b/xpcom/threads/nsIThreadPool.idl new file mode 100644 index 0000000000..48b4a465d8 --- /dev/null +++ b/xpcom/threads/nsIThreadPool.idl @@ -0,0 +1,115 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=2 sw=2 sts=2 et cindent: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "nsIEventTarget.idl" +#include "nsIThread.idl" + +[uuid(ef194cab-3f86-4b61-b132-e5e96a79e5d1)] +interface nsIThreadPoolListener : nsISupports +{ + /** + * Called when a new thread is created by the thread pool. The notification + * happens on the newly-created thread. + */ + void onThreadCreated(); + + /** + * Called when a thread is about to be destroyed by the thread pool. The + * notification happens on the thread that is about to be destroyed. + */ + void onThreadShuttingDown(); +}; + +/** + * An interface to a thread pool. A thread pool creates a limited number of + * anonymous (unnamed) worker threads. An event dispatched to the thread pool + * will be run on the next available worker thread. + */ +[rust_sync, uuid(76ce99c9-8e43-489a-9789-f27cc4424965)] +interface nsIThreadPool : nsIEventTarget +{ + /** + * Set the entire pool's QoS priority. If the priority has not changed, do nothing. + * Existing threads will update their QoS priority the next time they become + * active, and newly created threads will set this QoS priority upon creation. + */ + [noscript] void setQoSForThreads(in nsIThread_QoSPriority aPriority); + + /** + * Shutdown the thread pool. This method may not be executed from any thread + * in the thread pool. Instead, it is meant to be executed from another + * thread (usually the thread that created this thread pool). When this + * function returns, the thread pool and all of its threads will be shutdown, + * and it will no longer be possible to dispatch tasks to the thread pool. + * + * As a side effect, events on the current thread will be processed. + */ + void shutdown(); + + /** + * Shutdown the thread pool, but only wait for aTimeoutMs. After the timeout + * expires, any threads that have not shutdown yet are leaked and will not + * block shutdown. + * + * This method should only be used at during shutdown to cleanup threads that + * made blocking calls to code outside our control, and can't be safely + * terminated. We choose to leak them intentionally to avoid a shutdown hang. + */ + [noscript] void shutdownWithTimeout(in long aTimeoutMs); + + /** + * Get/set the maximum number of threads allowed at one time in this pool. + */ + attribute unsigned long threadLimit; + + /** + * Get/set the maximum number of idle threads kept alive. + */ + attribute unsigned long idleThreadLimit; + + /** + * Get/set the amount of time in milliseconds before an idle thread is + * destroyed. + */ + attribute unsigned long idleThreadTimeout; + + /** + * If set to true the idle timeout will be calculated as idleThreadTimeout + * divideded by the number of idle threads at the moment. This may help + * save memory allocations but still keep reasonable amount of idle threads. + * Default is false, use |idleThreadTimeout| for all threads. + */ + attribute boolean idleThreadTimeoutRegressive; + + /** + * Get/set the number of bytes reserved for the stack of all threads in + * the pool. By default this is nsIThreadManager::DEFAULT_STACK_SIZE. + */ + attribute unsigned long threadStackSize; + + /** + * An optional listener that will be notified when a thread is created or + * destroyed in the course of the thread pool's operation. + * + * A listener will only receive notifications about threads created after the + * listener is set so it is recommended that the consumer set the listener + * before dispatching the first event. A listener that receives an + * onThreadCreated() notification is guaranteed to always receive the + * corresponding onThreadShuttingDown() notification. + * + * The thread pool takes ownership of the listener and releases it when the + * shutdown() method is called. Threads created after the listener is set will + * also take ownership of the listener so that the listener will be kept alive + * long enough to receive the guaranteed onThreadShuttingDown() notification. + */ + attribute nsIThreadPoolListener listener; + + /** + * Set the label for threads in the pool. All threads will be named + * "<aName> #<n>", where <n> is a serial number. + */ + void setName(in ACString aName); +}; |