gecko-dev/image/ShutdownTracker.cpp
Sylvestre Ledru 265e672179 Bug 1511181 - Reformat everything to the Google coding style r=ehsan a=clang-format
# ignore-this-changeset

--HG--
extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
2018-11-30 11:46:48 +01:00

69 lines
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