From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 16:29:10 +0200 Subject: Adding upstream version 86.0.1. Signed-off-by: Daniel Baumann --- image/ShutdownTracker.cpp | 68 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 image/ShutdownTracker.cpp (limited to 'image/ShutdownTracker.cpp') diff --git a/image/ShutdownTracker.cpp b/image/ShutdownTracker.cpp new file mode 100644 index 0000000000..4eef66e52e --- /dev/null +++ b/image/ShutdownTracker.cpp @@ -0,0 +1,68 @@ +/* -*- 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 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 os = services::GetObserverService(); + if (os) { + os->AddObserver(new ShutdownObserver, "xpcom-will-shutdown", false); + } +} + +/* static */ +bool ShutdownTracker::ShutdownHasStarted() { return sShutdownHasStarted; } + +} // namespace image +} // namespace mozilla -- cgit v1.2.3