зеркало из https://github.com/mozilla/gecko-dev.git
69 строки
1.9 KiB
C++
69 строки
1.9 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/. */
|
|
|
|
#include "ShutdownTracker.h"
|
|
|
|
#include "mozilla/Services.h"
|
|
#include "nsIObserver.h"
|
|
#include "nsIObserverService.h"
|
|
|
|
namespace mozilla {
|
|
namespace image {
|
|
|
|
class ShutdownTrackerImpl;
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// Static Data
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
// Whether we've observed shutdown starting yet.
|
|
static bool sShutdownHasStarted = false;
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// Implementation
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
struct ShutdownObserver : public nsIObserver {
|
|
NS_DECL_ISUPPORTS
|
|
|
|
NS_IMETHOD Observe(nsISupports*, const char* aTopic,
|
|
const char16_t*) override {
|
|
if (strcmp(aTopic, "xpcom-will-shutdown") != 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
|
|
if (os) {
|
|
os->RemoveObserver(this, "xpcom-will-shutdown");
|
|
}
|
|
|
|
sShutdownHasStarted = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
virtual ~ShutdownObserver() {}
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS(ShutdownObserver, nsIObserver)
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// Public API
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
/* static */
|
|
void ShutdownTracker::Initialize() {
|
|
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
|
|
if (os) {
|
|
os->AddObserver(new ShutdownObserver, "xpcom-will-shutdown", false);
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
bool ShutdownTracker::ShutdownHasStarted() { return sShutdownHasStarted; }
|
|
|
|
} // namespace image
|
|
} // namespace mozilla
|