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/* -*- 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 <cstdint>
#include <utility>
#include "mozilla/Assertions.h"
#include "mozilla/LinkedList.h"
#include "mozilla/Mutex.h"
#include "MainThreadUtils.h"
#include "nsCOMPtr.h"
#include "nsInterfaceHashtable.h"
#include "nsHashKeys.h"
#include "nsIConsoleListener.h"
#include "nsIConsoleMessage.h"
#include "nsIConsoleService.h"
#include "nsIObserver.h"
#include "nsISupports.h"
template <class T>
class nsCOMArray;
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();
nsresult MaybeForwardScriptError(nsIConsoleMessage* aMessage, bool* sent);
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__ */