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69446aded5
This patch has a few side effects:
1. Plugins in the chrome process are "mirrored" to all content processes,
although this mirroring is currently imperfect (bug 1090576)
2. Plugins are no longer sorted by modification date in nsPluginHost.
3. Plugin exceptions are no longer propagated to JS code. They are ignored.
160 lines
4.4 KiB
C++
160 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_plugins_PluginHangUIParent_h
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#define mozilla_plugins_PluginHangUIParent_h
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#include "nsString.h"
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#include "base/process.h"
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#include "base/process_util.h"
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#include "mozilla/Mutex.h"
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#include "mozilla/plugins/PluginMessageUtils.h"
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#include "MiniShmParent.h"
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namespace mozilla {
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namespace plugins {
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class PluginModuleChromeParent;
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/**
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* This class is responsible for launching and communicating with the
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* plugin-hang-ui process.
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*
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* NOTE: PluginHangUIParent is *not* an IPDL actor! In this case, "Parent"
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* is describing the fact that firefox is the parent process to the
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* plugin-hang-ui process, which is the PluginHangUIChild.
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* PluginHangUIParent and PluginHangUIChild are a matched pair.
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* @see PluginHangUIChild
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*/
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class PluginHangUIParent : public MiniShmObserver
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{
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public:
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PluginHangUIParent(PluginModuleChromeParent* aModule,
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const int32_t aHangUITimeoutPref,
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const int32_t aChildTimeoutPref);
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virtual ~PluginHangUIParent();
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/**
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* Spawn the plugin-hang-ui.exe child process and terminate the given
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* plugin container process if the user elects to stop the hung plugin.
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*
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* @param aPluginName Human-readable name of the affected plugin.
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* @return true if the plugin hang ui process was successfully launched,
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* otherwise false.
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*/
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bool
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Init(const nsString& aPluginName);
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/**
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* If the Plugin Hang UI is being shown, send a cancel notification to the
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* Plugin Hang UI child process.
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*
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* @return true if the UI was shown and the cancel command was successfully
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* sent to the child process, otherwise false.
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*/
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bool
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Cancel();
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/**
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* Returns whether the Plugin Hang UI is currently being displayed.
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*
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* @return true if the Plugin Hang UI is showing, otherwise false.
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*/
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bool
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IsShowing() const { return mIsShowing; }
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/**
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* Returns whether this Plugin Hang UI instance has been shown. Note
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* that this does not necessarily mean that the UI is showing right now.
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*
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* @return true if the Plugin Hang UI has shown, otherwise false.
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*/
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bool
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WasShown() const { return mIsShowing || mLastUserResponse != 0; }
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/**
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* Returns whether the user checked the "Don't ask me again" checkbox.
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*
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* @return true if the user does not want to see the Hang UI again.
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*/
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bool
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DontShowAgain() const;
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/**
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* Returns whether the user clicked stop during the last time that the
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* Plugin Hang UI was displayed, if applicable.
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*
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* @return true if the UI was shown and the user chose to stop the
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* plugin, otherwise false
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*/
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bool
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WasLastHangStopped() const;
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/**
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* @return unsigned int containing the response bits from the last
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* time the Plugin Hang UI ran.
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*/
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unsigned int
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LastUserResponse() const { return mLastUserResponse; }
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/**
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* @return unsigned int containing the number of milliseconds that
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* the Plugin Hang UI was displayed before the user responded.
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* Returns 0 if the Plugin Hang UI has not been shown or was cancelled.
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*/
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unsigned int
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LastShowDurationMs() const;
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virtual void
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OnMiniShmEvent(MiniShmBase* aMiniShmObj) MOZ_OVERRIDE;
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virtual void
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OnMiniShmConnect(MiniShmBase* aMiniShmObj) MOZ_OVERRIDE;
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private:
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nsresult
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GetHangUIOwnerWindowHandle(NativeWindowHandle& windowHandle);
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bool
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SendCancel();
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bool
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RecvUserResponse(const unsigned int& aResponse);
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bool
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UnwatchHangUIChildProcess(bool aWait);
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static
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VOID CALLBACK SOnHangUIProcessExit(PVOID aContext, BOOLEAN aIsTimer);
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private:
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Mutex mMutex;
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PluginModuleChromeParent* mModule;
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const uint32_t mTimeoutPrefMs;
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const uint32_t mIPCTimeoutMs;
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MessageLoop* mMainThreadMessageLoop;
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bool mIsShowing;
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unsigned int mLastUserResponse;
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base::ProcessHandle mHangUIProcessHandle;
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NativeWindowHandle mMainWindowHandle;
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HANDLE mRegWait;
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HANDLE mShowEvent;
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DWORD mShowTicks;
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DWORD mResponseTicks;
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MiniShmParent mMiniShm;
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DISALLOW_COPY_AND_ASSIGN(PluginHangUIParent);
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};
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} // namespace plugins
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} // namespace mozilla
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#endif // mozilla_plugins_PluginHangUIParent_h
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