290 lines
7.7 KiB
C++
290 lines
7.7 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/utils/logging.h"
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#include "td/utils/ExitGuard.h"
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#include "td/utils/port/Clocks.h"
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#include "td/utils/port/thread_local.h"
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#include "td/utils/Slice.h"
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#include "td/utils/TsCerr.h"
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#include <atomic>
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#include <cstdlib>
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#include <limits>
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#include <mutex>
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#if TD_ANDROID
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#include <android/log.h>
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#define ALOG_TAG "DLTD"
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#elif TD_TIZEN
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#include <dlog.h>
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#define DLOG_TAG "DLTD"
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#elif TD_EMSCRIPTEN
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#include <emscripten.h>
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#endif
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namespace td {
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LogOptions log_options;
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static std::atomic<int> max_callback_verbosity_level{-2};
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static std::atomic<OnLogMessageCallback> on_log_message_callback{nullptr};
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void set_log_message_callback(int max_verbosity_level, OnLogMessageCallback callback) {
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if (callback == nullptr) {
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max_verbosity_level = -2;
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}
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max_callback_verbosity_level = max_verbosity_level;
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on_log_message_callback = callback;
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}
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void LogInterface::append(int log_level, CSlice slice) {
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do_append(log_level, slice);
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if (log_level == VERBOSITY_NAME(FATAL)) {
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process_fatal_error(slice);
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} else if (log_level <= max_callback_verbosity_level.load(std::memory_order_relaxed)) {
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auto callback = on_log_message_callback.load(std::memory_order_relaxed);
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if (callback != nullptr) {
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callback(log_level, slice);
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}
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}
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}
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TD_THREAD_LOCAL const char *Logger::tag_ = nullptr;
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TD_THREAD_LOCAL const char *Logger::tag2_ = nullptr;
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Logger::Logger(LogInterface &log, const LogOptions &options, int log_level, Slice file_name, int line_num,
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Slice comment)
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: Logger(log, options, log_level) {
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if (log_level == VERBOSITY_NAME(PLAIN) && &options == &log_options) {
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return;
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}
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if (!options_.add_info) {
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return;
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}
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if (ExitGuard::is_exited()) {
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return;
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}
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// log level
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sb_ << '[';
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if (static_cast<uint32>(log_level) < 10) {
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sb_ << ' ' << static_cast<char>('0' + log_level);
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} else {
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sb_ << log_level;
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}
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sb_ << ']';
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// thread id
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auto thread_id = get_thread_id();
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sb_ << "[t";
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if (static_cast<uint32>(thread_id) < 10) {
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sb_ << ' ' << static_cast<char>('0' + thread_id);
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} else {
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sb_ << thread_id;
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}
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sb_ << ']';
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// timestamp
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auto time = Clocks::system();
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auto unix_time = static_cast<uint32>(time);
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auto nanoseconds = static_cast<uint32>((time - unix_time) * 1e9);
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sb_ << '[' << unix_time << '.';
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uint32 limit = 100000000;
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while (nanoseconds < limit && limit > 1) {
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sb_ << '0';
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limit /= 10;
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}
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sb_ << nanoseconds << ']';
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// file : line
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if (!file_name.empty()) {
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auto last_slash_ = static_cast<int32>(file_name.size()) - 1;
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while (last_slash_ >= 0 && file_name[last_slash_] != '/' && file_name[last_slash_] != '\\') {
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last_slash_--;
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}
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file_name = file_name.substr(last_slash_ + 1);
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sb_ << '[' << file_name << ':' << static_cast<uint32>(line_num) << ']';
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}
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// context from tag_
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if (tag_ != nullptr && *tag_) {
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sb_ << "[#" << Slice(tag_) << ']';
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}
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// context from tag2_
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if (tag2_ != nullptr && *tag2_) {
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sb_ << "[!" << Slice(tag2_) << ']';
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}
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// comment (e.g. condition in LOG_IF)
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if (!comment.empty()) {
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sb_ << "[&" << comment << ']';
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}
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sb_ << '\t';
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}
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Logger::~Logger() {
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if (ExitGuard::is_exited()) {
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return;
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}
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if (options_.fix_newlines) {
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sb_ << '\n';
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auto slice = as_cslice();
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if (slice.back() != '\n') {
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slice.back() = '\n';
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}
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while (slice.size() > 1 && slice[slice.size() - 2] == '\n') {
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slice.back() = '\0';
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slice = MutableCSlice(slice.begin(), slice.begin() + slice.size() - 1);
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}
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log_.append(log_level_, slice);
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} else {
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log_.append(log_level_, as_cslice());
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}
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}
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class DefaultLog final : public LogInterface {
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void do_append(int log_level, CSlice slice) final {
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#if TD_ANDROID
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switch (log_level) {
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case VERBOSITY_NAME(FATAL):
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__android_log_write(ANDROID_LOG_FATAL, ALOG_TAG, slice.c_str());
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break;
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case VERBOSITY_NAME(ERROR):
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__android_log_write(ANDROID_LOG_ERROR, ALOG_TAG, slice.c_str());
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break;
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case VERBOSITY_NAME(WARNING):
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__android_log_write(ANDROID_LOG_WARN, ALOG_TAG, slice.c_str());
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break;
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case VERBOSITY_NAME(INFO):
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__android_log_write(ANDROID_LOG_INFO, ALOG_TAG, slice.c_str());
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break;
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default:
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__android_log_write(ANDROID_LOG_DEBUG, ALOG_TAG, slice.c_str());
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break;
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}
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#elif TD_TIZEN
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switch (log_level) {
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case VERBOSITY_NAME(FATAL):
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dlog_print(DLOG_ERROR, DLOG_TAG, "%s", slice.c_str());
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break;
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case VERBOSITY_NAME(ERROR):
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dlog_print(DLOG_ERROR, DLOG_TAG, "%s", slice.c_str());
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break;
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case VERBOSITY_NAME(WARNING):
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dlog_print(DLOG_WARN, DLOG_TAG, "%s", slice.c_str());
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break;
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case VERBOSITY_NAME(INFO):
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dlog_print(DLOG_INFO, DLOG_TAG, "%s", slice.c_str());
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break;
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default:
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dlog_print(DLOG_DEBUG, DLOG_TAG, "%s", slice.c_str());
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break;
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}
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#elif TD_EMSCRIPTEN
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switch (log_level) {
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case VERBOSITY_NAME(FATAL):
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emscripten_log(EM_LOG_ERROR | EM_LOG_CONSOLE | EM_LOG_C_STACK | EM_LOG_JS_STACK | EM_LOG_FUNC_PARAMS, "%s",
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slice.c_str());
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EM_ASM(throw(UTF8ToString($0)), slice.c_str());
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break;
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case VERBOSITY_NAME(ERROR):
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emscripten_log(EM_LOG_ERROR | EM_LOG_CONSOLE, "%s", slice.c_str());
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break;
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case VERBOSITY_NAME(WARNING):
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emscripten_log(EM_LOG_WARN | EM_LOG_CONSOLE, "%s", slice.c_str());
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break;
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default:
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emscripten_log(EM_LOG_CONSOLE, "%s", slice.c_str());
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break;
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}
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#elif !TD_WINDOWS
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Slice color;
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Slice no_color("\x1b[0m");
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switch (log_level) {
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case VERBOSITY_NAME(FATAL):
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case VERBOSITY_NAME(ERROR):
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color = Slice("\x1b[1;31m"); // red
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break;
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case VERBOSITY_NAME(WARNING):
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color = Slice("\x1b[1;33m"); // yellow
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break;
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case VERBOSITY_NAME(INFO):
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color = Slice("\x1b[1;36m"); // cyan
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break;
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default:
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no_color = Slice();
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break;
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}
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if (!slice.empty() && slice.back() == '\n') {
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TsCerr() << color << slice.substr(0, slice.size() - 1) << no_color << "\n";
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} else {
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TsCerr() << color << slice << no_color;
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}
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#else
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// TODO: color
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TsCerr() << slice;
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#endif
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}
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};
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static DefaultLog default_log;
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LogInterface *const default_log_interface = &default_log;
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LogInterface *log_interface = default_log_interface;
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static OnFatalErrorCallback on_fatal_error_callback = nullptr;
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static bool use_death_handler = true;
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void set_log_fatal_error_callback(OnFatalErrorCallback callback) {
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on_fatal_error_callback = callback;
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}
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void set_log_disable_death_handler(bool disabled) {
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use_death_handler = !disabled;
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}
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void process_fatal_error(CSlice message) {
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if (0 <= max_callback_verbosity_level.load(std::memory_order_relaxed)) {
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auto callback = on_log_message_callback.load(std::memory_order_relaxed);
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if (callback != nullptr) {
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callback(0, message);
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}
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}
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std::abort();
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}
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namespace {
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std::mutex sdl_mutex;
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int sdl_cnt = 0;
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int sdl_verbosity = 0;
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} // namespace
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ScopedDisableLog::ScopedDisableLog() {
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std::unique_lock<std::mutex> guard(sdl_mutex);
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if (sdl_cnt == 0) {
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sdl_verbosity = set_verbosity_level(std::numeric_limits<int>::min());
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}
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sdl_cnt++;
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}
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ScopedDisableLog::~ScopedDisableLog() {
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std::unique_lock<std::mutex> guard(sdl_mutex);
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sdl_cnt--;
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if (sdl_cnt == 0) {
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set_verbosity_level(sdl_verbosity);
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}
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}
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static ExitGuard exit_guard;
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} // namespace td
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