mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 22:25:30 +00:00
125 lines
4.2 KiB
C++
125 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=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/. */
|
|
|
|
// Some of this code is cut-and-pasted from nICEr. Copyright is:
|
|
|
|
/*
|
|
Copyright (c) 2007, Adobe Systems, Incorporated
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
* Neither the name of Adobe Systems, Network Resonance nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/* 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/. */
|
|
|
|
/* Original author: bcampen@mozilla.com */
|
|
|
|
/*
|
|
This file defines an r_dest_vlog that can be used to accumulate log messages
|
|
for later inspection/filtering. The intent is to use this for interactive
|
|
debug purposes on an about:webrtc page or similar.
|
|
*/
|
|
|
|
#ifndef rlogringbuffer_h__
|
|
#define rlogringbuffer_h__
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <deque>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "mozilla/Mutex.h"
|
|
|
|
#include "m_cpp_utils.h"
|
|
|
|
namespace mozilla {
|
|
|
|
class RLogRingBuffer {
|
|
public:
|
|
/*
|
|
NB: These are not threadsafe, nor are they safe to call during static
|
|
init/deinit.
|
|
*/
|
|
static RLogRingBuffer* CreateInstance();
|
|
static RLogRingBuffer* GetInstance();
|
|
static void DestroyInstance();
|
|
|
|
/*
|
|
Retrieves log statements that match a given substring, subject to a
|
|
limit. |matching_logs| will be filled in chronological order (front()
|
|
is oldest, back() is newest). |limit| == 0 will be interpreted as no
|
|
limit.
|
|
*/
|
|
void Filter(const std::string& substring,
|
|
uint32_t limit,
|
|
std::deque<std::string>* matching_logs);
|
|
|
|
void FilterAny(const std::vector<std::string>& substrings,
|
|
uint32_t limit,
|
|
std::deque<std::string>* matching_logs);
|
|
|
|
inline void GetAny(uint32_t limit,
|
|
std::deque<std::string>* matching_logs) {
|
|
Filter("", limit, matching_logs);
|
|
}
|
|
|
|
void SetLogLimit(uint32_t new_limit);
|
|
|
|
void Log(std::string&& log);
|
|
|
|
private:
|
|
RLogRingBuffer();
|
|
~RLogRingBuffer();
|
|
void RemoveOld();
|
|
static RLogRingBuffer* instance;
|
|
|
|
/*
|
|
* Might be worthwhile making this a circular buffer, but I think it is
|
|
* preferable to take up as little space as possible if no logging is
|
|
* happening/the ringbuffer is not being used.
|
|
*/
|
|
std::deque<std::string> log_messages_;
|
|
/* Max size of log buffer (should we use time-depth instead/also?) */
|
|
uint32_t log_limit_;
|
|
OffTheBooksMutex mutex_;
|
|
|
|
DISALLOW_COPY_ASSIGN(RLogRingBuffer);
|
|
}; // class RLogRingBuffer
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // rlogringbuffer_h__
|
|
|
|
|