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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /xpcom/threads/nsIThread.idl | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'xpcom/threads/nsIThread.idl')
| -rw-r--r-- | xpcom/threads/nsIThread.idl | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/xpcom/threads/nsIThread.idl b/xpcom/threads/nsIThread.idl new file mode 100644 index 000000000..fbfc8d4fb --- /dev/null +++ b/xpcom/threads/nsIThread.idl @@ -0,0 +1,149 @@ +/* -*- 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 "nsIIdlePeriod.idl" + +%{C++ +#include "mozilla/AlreadyAddRefed.h" +%} + +[ptr] native PRThread(PRThread); + +native alreadyAddRefed_nsIIdlePeriod(already_AddRefed<nsIIdlePeriod>); + +/** + * This interface provides a high-level abstraction for an operating system + * thread. + * + * Threads have a built-in event queue, and a thread is an event target that + * can receive nsIRunnable objects (events) to be processed on the thread. + * + * See nsIThreadManager for the API used to create and locate threads. + */ +[scriptable, uuid(5801d193-29d1-4964-a6b7-70eb697ddf2b)] +interface nsIThread : nsIEventTarget +{ + /** + * @returns + * The NSPR thread object corresponding to this nsIThread. + */ + [noscript] readonly attribute PRThread PRThread; + + /** + * @returns + * Whether or not this thread may call into JS. Used in the profiler + * to avoid some unnecessary locking. + */ + [noscript] attribute boolean CanInvokeJS; + + + /** + * Shutdown the thread. This method prevents further dispatch of events to + * the thread, and it causes any pending events to run to completion before + * the thread joins (see PR_JoinThread) with the current thread. During this + * method call, events for the current thread may be processed. + * + * This method MAY NOT be executed from the thread itself. Instead, it is + * meant to be executed from another thread (usually the thread that created + * this thread or the main application thread). When this function returns, + * the thread will be shutdown, and it will no longer be possible to dispatch + * events to the thread. + * + * @throws NS_ERROR_UNEXPECTED + * Indicates that this method was erroneously called when this thread was + * the current thread, that this thread was not created with a call to + * nsIThreadManager::NewThread, or if this method was called more than once + * on the thread object. + */ + void shutdown(); + + /** + * This method may be called to determine if there are any events ready to be + * processed. It may only be called when this thread is the current thread. + * + * Because events may be added to this thread by another thread, a "false" + * result does not mean that this thread has no pending events. It only + * means that there were no pending events when this method was called. + * + * @returns + * A boolean value that if "true" indicates that this thread has one or + * more pending events. + * + * @throws NS_ERROR_UNEXPECTED + * Indicates that this method was erroneously called when this thread was + * not the current thread. + */ + boolean hasPendingEvents(); + + /** + * Process the next event. If there are no pending events, then this method + * may wait -- depending on the value of the mayWait parameter -- until an + * event is dispatched to this thread. This method is re-entrant but may + * only be called if this thread is the current thread. + * + * @param mayWait + * A boolean parameter that if "true" indicates that the method may block + * the calling thread to wait for a pending event. + * + * @returns + * A boolean value that if "true" indicates that an event was processed. + * + * @throws NS_ERROR_UNEXPECTED + * Indicates that this method was erroneously called when this thread was + * not the current thread. + */ + boolean processNextEvent(in boolean mayWait); + + /** + * Shutdown the thread asynchronously. This method immediately prevents + * further dispatch of events to the thread, and it causes any pending events + * to run to completion before this thread joins with the current thread. + * + * UNLIKE shutdown() this does not process events on the current thread. + * Instead it merely ensures that the current thread continues running until + * this thread has shut down. + * + * This method MAY NOT be executed from the thread itself. Instead, it is + * meant to be executed from another thread (usually the thread that created + * this thread or the main application thread). When this function returns, + * the thread will continue running until it exhausts its event queue. + * + * @throws NS_ERROR_UNEXPECTED + * Indicates that this method was erroneously called when this thread was + * the current thread, that this thread was not created with a call to + * nsIThreadManager::NewThread, or if this method was called more than once + * on the thread object. + */ + void asyncShutdown(); + + /** + * Register an instance of nsIIdlePeriod which works as a facade of + * the abstract notion of a "current idle period". The + * nsIIdlePeriod should always represent the "current" idle period + * with regard to expected work for the thread. The thread is free + * to use this when there are no higher prioritized tasks to process + * to determine if it is reasonable to schedule tasks that could run + * when the thread is idle. The responsibility of the registered + * nsIIdlePeriod is to answer with an estimated deadline at which + * the thread should expect that it could receive new higher + * priority tasks. + */ + [noscript] void registerIdlePeriod(in alreadyAddRefed_nsIIdlePeriod aIdlePeriod); + + /** + * Dispatch an event to the thread's idle queue. This function may be called + * from any thread, and it may be called re-entrantly. + * + * @param event + * The alreadyAddRefed<> event to dispatch. + * NOTE that the event will be leaked if it fails to dispatch. + * + * @throws NS_ERROR_INVALID_ARG + * Indicates that event is null. + */ + [noscript] void idleDispatch(in alreadyAddRefed_nsIRunnable event); +}; |