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ea17c7ea48
This adds an asynchronous method to lock the startup files using the same lock that we use during normal startup. The profile service then uses this lock to gate access to the profiles.ini files adding a method to async flush the entire database or in the case that the on-disk database has changed a way to mergwe in some properties about the current profile into the on-disk version. Differential Revision: https://phabricator.services.mozilla.com/D222662
102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=2:tabstop=2:
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*/
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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 TOOLKIT_COMPONENTS_REMOTE_NSREMOTESERVER_H_
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#define TOOLKIT_COMPONENTS_REMOTE_NSREMOTESERVER_H_
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#include "nsRemoteServer.h"
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#include "nsIObserver.h"
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#include "nsIRemoteService.h"
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#include "mozilla/ThreadSafeWeakPtr.h"
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#include "mozilla/UniquePtr.h"
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#include "nsIFile.h"
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#include "nsProfileLock.h"
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#include "mozilla/MozPromise.h"
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class nsStartupLock final
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: public mozilla::SupportsThreadSafeWeakPtr<nsStartupLock> {
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public:
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MOZ_DECLARE_REFCOUNTED_TYPENAME(nsStartupLock)
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(nsStartupLock)
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nsStartupLock(nsIFile* aDir, nsProfileLock& aLock);
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private:
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~nsStartupLock();
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nsCOMPtr<nsIFile> mDir;
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nsProfileLock mLock;
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};
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class nsRemoteService final : public nsIObserver, public nsIRemoteService {
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public:
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// We will be a static singleton, so don't use the ordinary methods.
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NS_DECL_ISUPPORTS
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NS_DECL_NSIOBSERVER
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NS_DECL_NSIREMOTESERVICE
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nsRemoteService();
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void SetProgram(const char* aProgram);
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void SetProfile(nsACString& aProfile);
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#ifdef MOZ_WIDGET_GTK
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void SetStartupToken(nsACString& aStartupToken);
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#endif
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using StartupLockPromise =
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mozilla::MozPromise<RefPtr<nsStartupLock>, nsresult, false>;
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/**
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* Attempts to asynchronously lock Firefox startup files. Resolves when the
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* lock is acquired or the timeout is reached
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*
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* Locking is attempted by polling so if multiple instances are attempting to
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* lock it is undefined which one will acquire it when it becomes available.
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* If this instance already has the lock then this returns the same lock.
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* The lock will be released once all instances of `nsStartupLock` have been
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* released.
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*
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* Since this blocks the main thread it should only be called during startup.
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*/
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RefPtr<StartupLockPromise> AsyncLockStartup(double aTimeout);
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/**
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* Attempts to synchronously lock startup files. Returns then the lock is
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* acquired or a timeout is reached. In the event of a timeout or other
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* failure a nullptr is returned. Since this blocks the main thread it should
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* only be called during startup.
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*
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* Locking is attempted by polling so if multiple instances are attempting to
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* lock it is undefined which one will acquire it when it becomes available.
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* If this instance already has the lock then this returns the same lock.
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* The lock will be released once all instances of `nsStartupLock` have been
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* released.
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*/
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already_AddRefed<nsStartupLock> LockStartup();
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nsresult StartClient();
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void StartupServer();
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void ShutdownServer();
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private:
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friend nsStartupLock;
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mozilla::ThreadSafeWeakPtr<nsStartupLock> mStartupLock;
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RefPtr<nsRemoteService::StartupLockPromise> mStartupLockPromise;
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~nsRemoteService();
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nsresult SendCommandLine(const nsACString& aProfile, size_t aArgc,
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const char** aArgv, bool aRaise);
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mozilla::UniquePtr<nsRemoteServer> mRemoteServer;
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nsCString mProgram;
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nsCString mProfile;
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#ifdef MOZ_WIDGET_GTK
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nsCString mStartupToken;
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#endif
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};
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#endif // TOOLKIT_COMPONENTS_REMOTE_NSREMOTESERVER_H_
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