ppsspp/Core/Debugger/WebSocket/LogBroadcaster.cpp
Unknown W. Brackets 77131e737b Log: Use a separate field for the timestamp.
Better than parsing it since we already have the header separate.  Simpler
too.
2018-06-08 06:59:17 -07:00

119 lines
3.2 KiB
C++

// Copyright (c) 2018- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include <algorithm>
#include <mutex>
#include "Common/LogManager.h"
#include "Core/Debugger/WebSocket/LogBroadcaster.h"
#include "Core/Debugger/WebSocket/WebSocketUtils.h"
class DebuggerLogListener : public LogListener {
public:
void Log(const LogMessage &msg) override {
std::lock_guard<std::mutex> guard(lock_);
messages_[nextMessage_] = msg;
nextMessage_++;
if (nextMessage_ >= BUFFER_SIZE)
nextMessage_ -= BUFFER_SIZE;
count_++;
}
std::vector<LogMessage> GetMessages() {
std::lock_guard<std::mutex> guard(lock_);
int splitPoint;
int readCount;
if (read_ + BUFFER_SIZE < count_) {
// We'll start with our oldest then.
splitPoint = nextMessage_;
readCount = Count();
} else {
splitPoint = read_;
readCount = count_ - read_;
}
read_ = count_;
std::vector<LogMessage> results;
int splitEnd = std::min(splitPoint + readCount, (int)BUFFER_SIZE);
for (int i = splitPoint; i < splitEnd; ++i) {
results.push_back(messages_[i]);
readCount--;
}
for (int i = 0; i < readCount; ++i) {
results.push_back(messages_[i]);
}
return results;
}
int Count() const {
return count_ < BUFFER_SIZE ? count_ : BUFFER_SIZE;
}
private:
enum { BUFFER_SIZE = 1024 };
LogMessage messages_[BUFFER_SIZE];
std::mutex lock_;
int nextMessage_ = 0;
int count_ = 0;
int read_ = 0;
};
LogBroadcaster::LogBroadcaster() {
listener_ = new DebuggerLogListener();
if (LogManager::GetInstance())
LogManager::GetInstance()->AddListener(listener_);
}
LogBroadcaster::~LogBroadcaster() {
if (LogManager::GetInstance())
LogManager::GetInstance()->RemoveListener(listener_);
delete listener_;
}
struct DebuggerLogEvent {
const LogMessage &l;
operator std::string() {
JsonWriter j;
j.begin();
j.writeString("event", "log");
j.writeString("timestamp", l.timestamp);
j.writeString("header", l.header);
j.writeString("message", l.msg);
j.writeInt("level", l.level);
j.writeString("channel", l.log);
j.end();
return j.str();
}
};
// Log message (log)
//
// Sent unexpectedly with these properties:
// - timestamp: string timestamp of event.
// - header: string header information about the event (including file/line.)
// - message: actual log message as a string.
// - level: number severity level (1 = highest.)
// - channel: string describing log channel / grouping.
void LogBroadcaster::Broadcast(net::WebSocketServer *ws) {
auto messages = listener_->GetMessages();
for (auto msg : messages) {
ws->Send(DebuggerLogEvent{msg});
}
}