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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /xpcom/threads/nsThreadSyncDispatch.h | |
| 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/nsThreadSyncDispatch.h')
| -rw-r--r-- | xpcom/threads/nsThreadSyncDispatch.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/xpcom/threads/nsThreadSyncDispatch.h b/xpcom/threads/nsThreadSyncDispatch.h new file mode 100644 index 000000000..ae5e85464 --- /dev/null +++ b/xpcom/threads/nsThreadSyncDispatch.h @@ -0,0 +1,50 @@ +/* -*- 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/. */ + +#ifndef nsThreadSyncDispatch_h_ +#define nsThreadSyncDispatch_h_ + +#include "nsThreadUtils.h" +#include "LeakRefPtr.h" +#include "mozilla/DebugOnly.h" + +class nsThreadSyncDispatch : public mozilla::Runnable +{ +public: + nsThreadSyncDispatch(nsIThread* aOrigin, already_AddRefed<nsIRunnable>&& aTask) + : mOrigin(aOrigin) + , mSyncTask(mozilla::Move(aTask)) + { + } + + bool IsPending() + { + return !!mSyncTask; + } + +private: + NS_IMETHOD Run() override + { + if (nsIRunnable* task = mSyncTask.get()) { + mozilla::DebugOnly<nsresult> result = task->Run(); + MOZ_ASSERT(NS_SUCCEEDED(result), + "task in sync dispatch should not fail"); + // We must release the task here to ensure that when the original + // thread is unblocked, this task has been released. + mSyncTask.release(); + // unblock the origin thread + mOrigin->Dispatch(this, NS_DISPATCH_NORMAL); + } + return NS_OK; + } + + nsCOMPtr<nsIThread> mOrigin; + // The task is leaked by default when Run() is not called, because + // otherwise we may release it in an incorrect thread. + mozilla::LeakRefPtr<nsIRunnable> mSyncTask; +}; + +#endif // nsThreadSyncDispatch_h_ |