forked from mia/Aegisub
6c685daf98
It drags in a ton of crap, is kinda slow at runtime due to using std::deque, and doesn't actually make the code much simpler than just using a manual ring buffer.
120 lines
3.6 KiB
C++
120 lines
3.6 KiB
C++
// Copyright (c) 2010, Amar Takhar <verm@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#include "libaegisub/log.h"
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#include "libaegisub/cajun/elements.h"
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#include "libaegisub/cajun/writer.h"
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#include "libaegisub/dispatch.h"
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#include "libaegisub/util.h"
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#include <boost/filesystem/fstream.hpp>
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#include <boost/filesystem/operations.hpp>
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#include <boost/filesystem/path.hpp>
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#include <boost/range/algorithm/remove_if.hpp>
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#include <chrono>
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namespace agi { namespace log {
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/// Global log sink.
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LogSink *log;
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/// Short Severity ID
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/// Keep this ordered the same as Severity
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const char *Severity_ID = "EAWID";
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LogSink::LogSink() : queue(dispatch::Create()) { }
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LogSink::~LogSink() {
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// The destructor for emitters may try to log messages, so disable all the
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// emitters before destructing any
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decltype(emitters) emitters_temp;
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queue->Sync([&]{ swap(emitters_temp, emitters); });
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}
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void LogSink::Log(SinkMessage const& sm) {
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queue->Async([=] {
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if (messages.size() < 250)
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messages.push_back(sm);
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else {
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messages[next_idx] = sm;
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if (++next_idx == 250)
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next_idx = 0;
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}
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for (auto& em : emitters) em->log(sm);
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});
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}
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void LogSink::Subscribe(std::unique_ptr<Emitter> em) {
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LOG_D("agi/log/emitter/subscribe") << "Subscribe: " << this;
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auto tmp = em.release();
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queue->Sync([=] { emitters.emplace_back(tmp); });
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}
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void LogSink::Unsubscribe(Emitter *em) {
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queue->Sync([=] {
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emitters.erase(
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boost::remove_if(emitters, [=](std::unique_ptr<Emitter> const& e) { return e.get() == em; }),
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emitters.end());
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});
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LOG_D("agi/log/emitter/unsubscribe") << "Un-Subscribe: " << this;
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}
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decltype(LogSink::messages) LogSink::GetMessages() const {
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decltype(messages) ret;
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queue->Sync([&] {
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ret.reserve(messages.size());
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ret.insert(ret.end(), messages.begin() + next_idx, messages.end());
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ret.insert(ret.end(), messages.begin(), messages.begin() + next_idx);
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});
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return ret;
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}
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Message::Message(const char *section, Severity severity, const char *file, const char *func, int line)
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: msg(buffer, sizeof buffer)
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{
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using namespace std::chrono;
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sm.section = section;
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sm.severity = severity;
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sm.file = file;
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sm.func = func;
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sm.line = line;
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sm.time = duration_cast<nanoseconds>(steady_clock::now().time_since_epoch()).count();
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}
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Message::~Message() {
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sm.message = std::string(buffer, (std::string::size_type)msg.tellp());
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agi::log::log->Log(sm);
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}
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JsonEmitter::JsonEmitter(fs::path const& directory)
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: fp(new boost::filesystem::ofstream(unique_path(directory/util::strftime("%Y-%m-%d-%H-%M-%S-%%%%%%%%.json"))))
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{
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}
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void JsonEmitter::log(SinkMessage const& sm) {
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json::Object entry;
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entry["sec"] = sm.time / 1000000000;
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entry["usec"] = sm.time % 1000000000;
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entry["severity"] = sm.severity;
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entry["section"] = sm.section;
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entry["file"] = sm.file;
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entry["func"] = sm.func;
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entry["line"] = sm.line;
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entry["message"] = sm.message;
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json::Writer::Write(entry, *fp);
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fp->flush();
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}
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} }
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