mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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/. */
|
|
|
|
/**
|
|
* ShutdownTracker is an imagelib-global service that allows callers to check
|
|
* whether shutdown has started.
|
|
*/
|
|
|
|
#ifndef mozilla_image_ShutdownTracker_h
|
|
#define mozilla_image_ShutdownTracker_h
|
|
|
|
namespace mozilla {
|
|
namespace image {
|
|
|
|
/**
|
|
* ShutdownTracker is an imagelib-global service that allows callers to check
|
|
* whether shutdown has started. It exists to avoid the need for registering
|
|
* many 'xpcom-shutdown' notification observers on short-lived objects, which
|
|
* would have an unnecessary performance cost.
|
|
*/
|
|
struct ShutdownTracker
|
|
{
|
|
/**
|
|
* Initialize static data. Called during imagelib module initialization.
|
|
*/
|
|
static void Initialize();
|
|
|
|
/**
|
|
* Check whether shutdown has started. Callers can use this to check whether
|
|
* it's safe to access XPCOM services; if shutdown has started, such calls
|
|
* must be avoided.
|
|
*
|
|
* @return true if shutdown has already started.
|
|
*/
|
|
static bool ShutdownHasStarted();
|
|
|
|
private:
|
|
virtual ~ShutdownTracker() = 0; // Forbid instantiation.
|
|
};
|
|
|
|
} // namespace image
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_image_ShutdownTracker_h
|