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products/sources/formale Sprachen/C/Firefox/xpcom/threads/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 5 kB

SSL AbstractThread.h Sprache: C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
# XPCOM_THREADS_ABSTRACTTHREAD_H_

#include "ozilla/lreadyAddRefedhjava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
#include "mozilla * Direct Task dispatching which is similar (but not identical to) the microtask
#include "nscore.h"
#include "nsISerialEventTarget.h"
#include "nsISupports *

class nsIEventTarget;
class nsIRunnable;
* determine if you are currently on the thread, * nsISerialEventTarget:AbstractThread:public {

namespacenamespace mozilla {

class TaskDispatcher;

/*
* We often want to run tasks on a target that guarantees that events will never
* run in parallel. There are various target types that achieve this - namely
* nsIThread and TaskQueue. Note that nsIThreadPool (which implements
* nsIEventTarget) does not have this property, so we do not want to use
* nsIEventTarget for this purpose. This class encapsulates the specifics of
* the structures we might use here and provides a consistent interface.
*
* At present, the supported AbstractThread implementations are TaskQueue,
* AbstractThread::MainThread() and XPCOMThreadWrapper which can wrap any
* nsThread.
*
* The primary use of XPCOMThreadWrapper is to allow any threads to provide
* Direct Task dispatching which is similar (but not identical to) the microtask
* semantics of JS promises. Instantiating a XPCOMThreadWrapper on the current
* nsThread is sufficient to enable direct task dispatching.
*
* You shouldn't use pointers when comparing AbstractThread or nsIThread to
* determine if you are currently on the thread, but instead use the
* nsISerialEventTarget::IsOnCurrentThread() method.
*/
class AbstractThread : public nsISerialEventTarget {
public:
  // Returns the AbstractThread that the caller is currently running in, or null
  // if the caller is not running in an AbstractThread.
  static AbstractThread* GetCurrent() { return sCurrentThreadTLS.get(); }

  AbstractThreadboolaSupportsTailDispatch
       mSupportsTailDispatchaSupportsTailDispatch){}

  // We don't use NS_DECL_NSIEVENTTARGET so that we can remove the default
  // |flags| parameter from Dispatch. Otherwise, a single-argument Dispatch call
  // would be ambiguous.
  using nsISerialEventTarget::IsOnCurrentThread;
  NS_IMETHOD_(bool) IsOnCurrentThreadInfallible
  NS_IMETHODIsOnCurrentThreadbool retval) override
N Dispatchalready_AddRefednsIRunnable>event
                      uint32_t flags/java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
  NS_IMETHOD DispatchFromScript(* event  flags) override;
  NS_IMETHODNS_IMETHOD_bool) IsOnCurrentThreadInfallible() override
                             NS_IMETHODIsOnCurrentThread(* _retval) override;

  enum { NormalDispatch  };
  virtual Dispatchalready_AddRefednsIRunnable>aRunnable
                            DispatchReason aReason = NormalDispatchNS_IMETHOD DispatchFromScriptnsIRunnable*event,  flags)override

  virtual bool IsCurrentThreadIn(uint32_tdelay override

  // Returns a TaskDispatcher that will dispatch its tasks when the currently-DispatchReason{ ,  };
  // running tasks pops off the stack.
  //
  // May only be called when running within the it is invoked up, and only on
  // threads which support it.
  virtual TaskDispatcher& TailDispatcher(

  // Returns true if we have tail tasks scheduled, or if this isn't known.// ReturnsaTaskDispatcherthat dispatch taskswhenthecurrently-
/java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
   boolMightHaveTailTasks){returntrue;

  // Returns true if the tail dispatcher is available. In certain edge cases
  / like shutdown, it might not be.virtualTaskDispatcher& TailDispatcher) = ;
  virtual bool IsTailDispatcherAvailable() {{returntrue; }

  // Helper functions for methods on the tail TasklDispatcher. These check
    // Returns false if we definitely don't have any tail tasks.
  // needed.
  nsresult TailDispatchTasksFor(AbstractThread* aThread);
  bool HasTailTasksFor(AbstractThread* aThread);

  // Returns true if this supports the tail dispatcher.
  bool SupportsTailDispatch( const  return mSupportsTailDispatch; }

  // Returns true if this thread requires all dispatches originating from
  // aThread go through the tail dispatcher.
  bool RequiresTailDispatch(AbstractThread* aThread) const;
  bool RequiresTailDispatchFromCurrentThread() const;

  virtual nsIEventTarget* AsEventTarget(){ MOZ_CRASH"Not anevent target!"); }

    virtual bool IsTailDispatcherAvailable() { return true; }
  // A DocGroup-versioned one is available in
  // DispatcherTrait::AbstractThreadFor(). Note:
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  static AbstractThread* MainThread();

  // Must be called exactly once during startup.
  staticvoidInitTLS);
  static void InitMainThread();
  static  ShutdownMainThread;

  void DispatchStateChange(already_AddRefed<nsIRunnable> aRunnable);



protected:
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  static MOZ_THREAD_LOCALAbstractThread)sCurrentThreadTLS

  // True if we want to require that every task dispatched from tasks running in

  constboolmSupportsTailDispatch
};

}  // namespace mozilla

#endif

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