forked from mirrors/gecko-dev
bcff2dd108
In order to enable asynchronous launch, destruction of GeckoChildProcessHost (and its subclasses) has to be delayed until after launching (or anything else that might be made asynchronous in the future) has completed, to prevent use-after-free. However, there are other dependencies on process hosts always being destroyed on the I/O thread, so refcounting would be difficult to use. Instead, GeckoChildProcessHost now may not be destroyed directly, but must go through a method that handles the scheduling. There are also some minor cleanups to the affected headers (removed duplicate access modifiers, and made PluginProcessParent final). Depends on D18010 Differential Revision: https://phabricator.services.mozilla.com/D18011 --HG-- extra : moz-landing-system : lando
96 lines
2.8 KiB
C++
96 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=4 et :
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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 dom_plugins_PluginProcessParent_h
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#define dom_plugins_PluginProcessParent_h 1
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#include "mozilla/Attributes.h"
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#include "base/basictypes.h"
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#include "base/file_path.h"
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#include "base/task.h"
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#include "base/thread.h"
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#include "chrome/common/child_process_host.h"
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#include "mozilla/ipc/GeckoChildProcessHost.h"
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#include "mozilla/ipc/TaskFactory.h"
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#include "mozilla/UniquePtr.h"
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#include "nsCOMPtr.h"
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#include "nsIRunnable.h"
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#include "nsTHashtable.h"
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#include "nsHashKeys.h"
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namespace mozilla {
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namespace plugins {
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class LaunchCompleteTask : public Runnable {
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public:
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LaunchCompleteTask()
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: Runnable("plugins::LaunchCompleteTask"), mLaunchSucceeded(false) {}
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void SetLaunchSucceeded() { mLaunchSucceeded = true; }
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protected:
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bool mLaunchSucceeded;
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};
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class PluginProcessParent final : public mozilla::ipc::GeckoChildProcessHost {
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public:
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explicit PluginProcessParent(const std::string& aPluginFilePath);
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/**
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* Launch the plugin process. If the process fails to launch,
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* this method will return false.
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*
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* @param aLaunchCompleteTask Task that is executed on the main
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* thread once the asynchonous launch has completed.
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* @param aSandboxLevel Determines the strength of the sandbox.
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* <= 0 means no sandbox.
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* @param aIsSandboxLoggingEnabled Indicates if sandbox violation
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* logging should be enabled for the plugin process.
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*/
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bool Launch(UniquePtr<LaunchCompleteTask> aLaunchCompleteTask =
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UniquePtr<LaunchCompleteTask>(),
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int32_t aSandboxLevel = 0, bool aIsSandboxLoggingEnabled = false);
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virtual bool CanShutdown() override { return true; }
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const std::string& GetPluginFilePath() { return mPluginFilePath; }
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using mozilla::ipc::GeckoChildProcessHost::GetChannel;
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virtual bool WaitUntilConnected(int32_t aTimeoutMs = 0) override;
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virtual void OnChannelConnected(int32_t peer_pid) override;
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virtual void OnChannelError() override;
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bool IsConnected();
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static bool IsPluginProcessId(base::ProcessId procId);
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private:
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~PluginProcessParent();
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void RunLaunchCompleteTask();
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std::string mPluginFilePath;
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ipc::TaskFactory<PluginProcessParent> mTaskFactory;
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UniquePtr<LaunchCompleteTask> mLaunchCompleteTask;
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MessageLoop* mMainMsgLoop;
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#ifdef XP_WIN
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typedef nsTHashtable<nsUint32HashKey> PidSet;
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// Set of PIDs for all plugin child processes or NULL if empty.
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static PidSet* sPidSet;
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uint32_t mChildPid;
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#endif
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DISALLOW_EVIL_CONSTRUCTORS(PluginProcessParent);
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};
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} // namespace plugins
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} // namespace mozilla
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#endif // ifndef dom_plugins_PluginProcessParent_h
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