netwerk/ipc/ChannelEventQueue.cpp@6474c204b198 (annotated)
netwerk/ipc/ChannelEventQueue.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * vim: set sw=2 ts=8 et tw=80 : |
| michael@0 | 3 | */ |
| michael@0 | 4 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 5 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 6 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "nsISupports.h" |
| michael@0 | 9 | #include "mozilla/net/ChannelEventQueue.h" |
| michael@0 | 10 | #include "nsThreadUtils.h" |
| michael@0 | 11 | |
| michael@0 | 12 | namespace mozilla { |
| michael@0 | 13 | namespace net { |
| michael@0 | 14 | |
| michael@0 | 15 | void |
| michael@0 | 16 | ChannelEventQueue::FlushQueue() |
| michael@0 | 17 | { |
| michael@0 | 18 | // Events flushed could include destruction of channel (and our own |
| michael@0 | 19 | // destructor) unless we make sure its refcount doesn't drop to 0 while this |
| michael@0 | 20 | // method is running. |
| michael@0 | 21 | nsCOMPtr<nsISupports> kungFuDeathGrip(mOwner); |
| michael@0 | 22 | |
| michael@0 | 23 | // Prevent flushed events from flushing the queue recursively |
| michael@0 | 24 | mFlushing = true; |
| michael@0 | 25 | |
| michael@0 | 26 | uint32_t i; |
| michael@0 | 27 | for (i = 0; i < mEventQueue.Length(); i++) { |
| michael@0 | 28 | mEventQueue[i]->Run(); |
| michael@0 | 29 | if (mSuspended) |
| michael@0 | 30 | break; |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | // We will always want to remove at least one finished callback. |
| michael@0 | 34 | if (i < mEventQueue.Length()) |
| michael@0 | 35 | i++; |
| michael@0 | 36 | |
| michael@0 | 37 | // It is possible for new callbacks to be enqueued as we are |
| michael@0 | 38 | // flushing the queue, so the queue must not be cleared until |
| michael@0 | 39 | // all callbacks have run. |
| michael@0 | 40 | mEventQueue.RemoveElementsAt(0, i); |
| michael@0 | 41 | |
| michael@0 | 42 | mFlushing = false; |
| michael@0 | 43 | } |
| michael@0 | 44 | |
| michael@0 | 45 | void |
| michael@0 | 46 | ChannelEventQueue::Resume() |
| michael@0 | 47 | { |
| michael@0 | 48 | // Resuming w/o suspend: error in debug mode, ignore in build |
| michael@0 | 49 | MOZ_ASSERT(mSuspendCount > 0); |
| michael@0 | 50 | if (mSuspendCount <= 0) { |
| michael@0 | 51 | return; |
| michael@0 | 52 | } |
| michael@0 | 53 | |
| michael@0 | 54 | if (!--mSuspendCount) { |
| michael@0 | 55 | nsRefPtr<nsRunnableMethod<ChannelEventQueue> > event = |
| michael@0 | 56 | NS_NewRunnableMethod(this, &ChannelEventQueue::CompleteResume); |
| michael@0 | 57 | if (mTargetThread) { |
| michael@0 | 58 | mTargetThread->Dispatch(event, NS_DISPATCH_NORMAL); |
| michael@0 | 59 | } else { |
| michael@0 | 60 | MOZ_RELEASE_ASSERT(NS_IsMainThread()); |
| michael@0 | 61 | NS_DispatchToCurrentThread(event); |
| michael@0 | 62 | } |
| michael@0 | 63 | } |
| michael@0 | 64 | } |
| michael@0 | 65 | |
| michael@0 | 66 | nsresult |
| michael@0 | 67 | ChannelEventQueue::RetargetDeliveryTo(nsIEventTarget* aTargetThread) |
| michael@0 | 68 | { |
| michael@0 | 69 | MOZ_RELEASE_ASSERT(NS_IsMainThread()); |
| michael@0 | 70 | MOZ_RELEASE_ASSERT(!mTargetThread); |
| michael@0 | 71 | MOZ_RELEASE_ASSERT(aTargetThread); |
| michael@0 | 72 | |
| michael@0 | 73 | mTargetThread = do_QueryInterface(aTargetThread); |
| michael@0 | 74 | MOZ_RELEASE_ASSERT(mTargetThread); |
| michael@0 | 75 | |
| michael@0 | 76 | return NS_OK; |
| michael@0 | 77 | } |
| michael@0 | 78 | |
| michael@0 | 79 | } |
| michael@0 | 80 | } |
