gecko-dev/dom/ipc/ProcessHangMonitor.h
Emilio Cobos Álvarez c7d8e549f3 Bug 1848357 - Cleanup layer observer handling. r=mconley,gfx-reviewers,bradwerth
This seems to work, and turns out I need to fix this before bug 1847584,
because the epoch handling breaks with those patches in the case
customize mode sets display: none on browser elements.

Instead of dealing with epochs, just always report the last "has layers"
state to BrowserParent. This is both simpler and more reliable (there
were a couple hacks in WebRenderBridgeParent to make sure we notified
even though a transaction failed).

AsyncTabSwitcher pretty much already deals with this correctly because
it already needs to deal with browsers that already have layers, we only
had to loosen some assertions for potentially previous messages which
are fine.

Differential Revision: https://phabricator.services.mozilla.com/D187203
2023-09-01 17:09:27 +00:00

98 lines
2.7 KiB
C++

/* -*- 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 mozilla_ProcessHangMonitor_h
#define mozilla_ProcessHangMonitor_h
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/Atomics.h"
#include "nsCOMPtr.h"
#include "nsIObserver.h"
#include "nsIRemoteTab.h"
#include "nsIThread.h"
#include "nsStringFwd.h"
class nsIRunnable;
class nsIBrowserChild;
class nsIThread;
namespace mozilla {
namespace dom {
class ContentParent;
class BrowserParent;
struct CancelContentJSOptions;
} // namespace dom
class PProcessHangMonitorParent;
class ProcessHangMonitor final : public nsIObserver {
private:
ProcessHangMonitor();
virtual ~ProcessHangMonitor();
public:
static ProcessHangMonitor* Get() { return sInstance; }
static ProcessHangMonitor* GetOrCreate();
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
static already_AddRefed<PProcessHangMonitorParent> AddProcess(
dom::ContentParent* aContentParent);
static void RemoveProcess(PProcessHangMonitorParent* aParent);
static void ClearHang();
static void PaintWhileInterruptingJS(PProcessHangMonitorParent* aParent,
dom::BrowserParent* aTab);
static void UnloadLayersWhileInterruptingJS(
PProcessHangMonitorParent* aParent, dom::BrowserParent* aTab);
static void ClearPaintWhileInterruptingJS();
static void MaybeStartPaintWhileInterruptingJS();
static void CancelContentJSExecutionIfRunning(
PProcessHangMonitorParent* aParent, dom::BrowserParent* aTab,
nsIRemoteTab::NavigationType aNavigationType,
const dom::CancelContentJSOptions& aCancelContentJSOptions);
static void SetMainThreadQoSPriority(PProcessHangMonitorParent* aParent,
nsIThread::QoSPriority aQoSPriority);
enum SlowScriptAction {
Continue,
Terminate,
StartDebugger,
};
SlowScriptAction NotifySlowScript(nsIBrowserChild* aBrowserChild,
const char* aFileName,
const nsString& aAddonId,
const double aDuration);
void NotifyPluginHang(uint32_t aPluginId);
bool IsDebuggerStartupComplete();
void InitiateCPOWTimeout();
bool ShouldTimeOutCPOWs();
nsresult Dispatch(already_AddRefed<nsIRunnable> aRunnable);
bool IsOnThread();
private:
static ProcessHangMonitor* sInstance;
Atomic<bool> mCPOWTimeout;
nsCOMPtr<nsIThread> mThread;
};
} // namespace mozilla
#endif // mozilla_ProcessHangMonitor_h