/* -*- 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/. */ /* * nsConsoleService class declaration. */ #ifndef __nsconsoleservice_h__ #define __nsconsoleservice_h__ #include "mozilla/Attributes.h" #include "mozilla/Mutex.h" #include "nsInterfaceHashtable.h" #include "nsHashKeys.h" #include "nsIConsoleService.h" class nsConsoleService final : public nsIConsoleService, public nsIObserver { public: nsConsoleService(); nsresult Init(); NS_DECL_THREADSAFE_ISUPPORTS NS_DECL_NSICONSOLESERVICE NS_DECL_NSIOBSERVER void SetIsDelivering() { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(!mDeliveringMessage); mDeliveringMessage = true; } void SetDoneDelivering() { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(mDeliveringMessage); mDeliveringMessage = false; } // This is a variant of LogMessage which allows the caller to determine // if the message should be output to an OS-specific log. This is used on // B2G to control whether the message is logged to the android log or not. enum OutputMode { SuppressLog, OutputToLog }; virtual nsresult LogMessageWithMode(nsIConsoleMessage* aMessage, OutputMode aOutputMode); typedef nsInterfaceHashtable<nsISupportsHashKey, nsIConsoleListener> ListenerHash; void CollectCurrentListeners(nsCOMArray<nsIConsoleListener>& aListeners); private: class MessageElement : public mozilla::LinkedListElement<MessageElement> { public: explicit MessageElement(nsIConsoleMessage* aMessage) : mMessage(aMessage) {} nsIConsoleMessage* Get() { return mMessage.get(); } // Swap directly into an nsCOMPtr to avoid spurious refcount // traffic off the main thread in debug builds from // NSCAP_ASSERT_NO_QUERY_NEEDED(). void swapMessage(nsCOMPtr<nsIConsoleMessage>& aRetVal) { mMessage.swap(aRetVal); } ~MessageElement(); private: nsCOMPtr<nsIConsoleMessage> mMessage; MessageElement(const MessageElement&) = delete; MessageElement& operator=(const MessageElement&) = delete; MessageElement(MessageElement&&) = delete; MessageElement& operator=(MessageElement&&) = delete; }; ~nsConsoleService(); void ClearMessagesForWindowID(const uint64_t innerID); void ClearMessages(); mozilla::LinkedList<MessageElement> mMessages; // The current size of mMessages. uint32_t mCurrentSize; // The maximum size of mMessages. uint32_t mMaximumSize; // Are we currently delivering a console message on the main thread? If // so, we suppress incoming messages on the main thread only, to avoid // infinite repitition. bool mDeliveringMessage; // Listeners to notify whenever a new message is logged. ListenerHash mListeners; // To serialize interesting methods. mozilla::Mutex mLock; }; #endif /* __nsconsoleservice_h__ */