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Commit cefe6772 authored by gabime's avatar gabime
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wip fix #1680 again

parent 1ac2dcc5
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example/example.cpp
View file @ cefe6772
......@@ -23,272 +23,16 @@ void custom_flags_example();
#include "spdlog/spdlog.h"
#include "spdlog/cfg/env.h" // for loading levels from the environment variable
#include "spdlog/sinks/stdout_color_sinks.h"
int main(int, char *[])
{
// Log levels can be loaded from argv/env using "SPDLOG_LEVEL"
load_levels_example();
spdlog::info("Welcome to spdlog version {}.{}.{} !", SPDLOG_VER_MAJOR, SPDLOG_VER_MINOR, SPDLOG_VER_PATCH);
spdlog::warn("Easy padding in numbers like {:08d}", 12);
spdlog::critical("Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", 42);
spdlog::info("Support for floats {:03.2f}", 1.23456);
spdlog::info("Positional args are {1} {0}..", "too", "supported");
spdlog::info("{:>8} aligned, {:<8} aligned", "right", "left");
// Runtime log levels
spdlog::set_level(spdlog::level::info); // Set global log level to info
spdlog::debug("This message should not be displayed!");
spdlog::set_level(spdlog::level::trace); // Set specific logger's log level
spdlog::debug("This message should be displayed..");
// Customize msg format for all loggers
spdlog::set_pattern("[%H:%M:%S %z] [%^%L%$] [thread %t] %v");
spdlog::info("This an info message with custom format");
spdlog::set_pattern("%+"); // back to default format
spdlog::set_level(spdlog::level::info);
// Backtrace support
// Loggers can store in a ring buffer all messages (including debug/trace) for later inspection.
// When needed, call dump_backtrace() to see what happened:
spdlog::enable_backtrace(10); // create ring buffer with capacity of 10 messages
for (int i = 0; i < 100; i++)
{
spdlog::debug("Backtrace message {}", i); // not logged..
}
// e.g. if some error happened:
spdlog::dump_backtrace(); // log them now!
try
{
stdout_logger_example();
basic_example();
rotating_example();
daily_example();
async_example();
binary_example();
multi_sink_example();
user_defined_example();
err_handler_example();
trace_example();
stopwatch_example();
custom_flags_example();
// Flush all *registered* loggers using a worker thread every 3 seconds.
// note: registered loggers *must* be thread safe for this to work correctly!
spdlog::flush_every(std::chrono::seconds(3));
// Apply some function on all registered loggers
spdlog::apply_all([&](std::shared_ptr<spdlog::logger> l) { l->info("End of example."); });
// Release all spdlog resources, and drop all loggers in the registry.
// This is optional (only mandatory if using windows + async log).
spdlog::shutdown();
}
// Exceptions will only be thrown upon failed logger or sink construction (not during logging).
catch (const spdlog::spdlog_ex &ex)
{
std::printf("Log initialization failed: %s\n", ex.what());
return 1;
}
}
#include "spdlog/sinks/stdout_color_sinks.h"
// or #include "spdlog/sinks/stdout_sinks.h" if no colors needed.
void stdout_logger_example()
{
// Create color multi threaded logger.
auto console = spdlog::stdout_color_mt("console");
// or for stderr:
// auto console = spdlog::stderr_color_mt("error-logger");
}
#include "spdlog/sinks/basic_file_sink.h"
void basic_example()
{
// Create basic file logger (not rotated).
auto my_logger = spdlog::basic_logger_mt("file_logger", "logs/basic-log.txt");
}
#include "spdlog/sinks/rotating_file_sink.h"
void rotating_example()
{
// Create a file rotating logger with 5mb size max and 3 rotated files.
auto rotating_logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
}
#include "spdlog/sinks/daily_file_sink.h"
void daily_example()
{
// Create a daily logger - a new file is created every day on 2:30am.
auto daily_logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
}
#include "spdlog/cfg/env.h"
void load_levels_example()
{
// Set the log level to "info" and mylogger to to "trace":
// SPDLOG_LEVEL=info,mylogger=trace && ./example
spdlog::cfg::load_env_levels();
// or from command line:
// ./example SPDLOG_LEVEL=info,mylogger=trace
// #include "spdlog/cfg/argv.h" // for loading levels from argv
// spdlog::cfg::load_argv_levels(args, argv);
}
#include "spdlog/async.h"
void async_example()
{
// Default thread pool settings can be modified *before* creating the async logger:
// spdlog::init_thread_pool(32768, 1); // queue with max 32k items 1 backing thread.
auto async_file = spdlog::basic_logger_mt<spdlog::async_factory>("async_file_logger", "logs/async_log.txt");
// alternatively:
// auto async_file = spdlog::create_async<spdlog::sinks::basic_file_sink_mt>("async_file_logger", "logs/async_log.txt");
for (int i = 1; i < 101; ++i)
{
async_file->info("Async message #{}", i);
}
}
// Log binary data as hex.
// Many types of std::container<char> types can be used.
// Iterator ranges are supported too.
// Format flags:
// {:X} - print in uppercase.
// {:s} - don't separate each byte with space.
// {:p} - don't print the position on each line start.
// {:n} - don't split the output to lines.
#include "spdlog/fmt/bin_to_hex.h"
void binary_example()
{
std::vector<char> buf(80);
for (int i = 0; i < 80; i++)
{
buf.push_back(static_cast<char>(i & 0xff));
}
spdlog::info("Binary example: {}", spdlog::to_hex(buf));
spdlog::info("Another binary example:{:n}", spdlog::to_hex(std::begin(buf), std::begin(buf) + 10));
// more examples:
// logger->info("uppercase: {:X}", spdlog::to_hex(buf));
// logger->info("uppercase, no delimiters: {:Xs}", spdlog::to_hex(buf));
// logger->info("uppercase, no delimiters, no position info: {:Xsp}", spdlog::to_hex(buf));
// logger->info("hexdump style: {:a}", spdlog::to_hex(buf));
// logger->info("hexdump style, 20 chars per line {:a}", spdlog::to_hex(buf, 20));
}
// Compile time log levels.
// define SPDLOG_ACTIVE_LEVEL to required level (e.g. SPDLOG_LEVEL_TRACE)
void trace_example()
{
// trace from default logger
SPDLOG_TRACE("Some trace message.. {} ,{}", 1, 3.23);
// debug from default logger
SPDLOG_DEBUG("Some debug message.. {} ,{}", 1, 3.23);
// trace from logger object
auto logger = spdlog::get("file_logger");
SPDLOG_LOGGER_TRACE(logger, "another trace message");
}
// stopwatch example
#include "spdlog/stopwatch.h"
#include <thread>
void stopwatch_example()
{
spdlog::stopwatch sw;
std::this_thread::sleep_for(std::chrono::milliseconds(123));
spdlog::info("Stopwatch: {} seconds", sw);
}
// A logger with multiple sinks (stdout and file) - each with a different format and log level.
void multi_sink_example()
{
auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
console_sink->set_level(spdlog::level::warn);
console_sink->set_pattern("[multi_sink_example] [%^%l%$] %v");
auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs/multisink.txt", true);
file_sink->set_level(spdlog::level::trace);
spdlog::logger logger("multi_sink", {console_sink, file_sink});
logger.set_level(spdlog::level::debug);
logger.warn("this should appear in both console and file");
logger.info("this message should not appear in the console, only in the file");
}
// User defined types logging by implementing operator<<
#include "spdlog/fmt/ostr.h" // must be included
struct my_type
{
int i;
template<typename OStream>
friend OStream &operator<<(OStream &os, const my_type &c)
{
return os << "[my_type i=" << c.i << "]";
}
};
void user_defined_example()
{
spdlog::info("user defined type: {}", my_type{14});
}
// Custom error handler. Will be triggered on log failure.
void err_handler_example()
{
// can be set globally or per logger(logger->set_error_handler(..))
spdlog::set_error_handler([](const std::string &msg) { printf("*** Custom log error handler: %s ***\n", msg.c_str()); });
}
// syslog example (linux/osx/freebsd)
#ifndef _WIN32
#include "spdlog/sinks/syslog_sink.h"
void syslog_example()
{
std::string ident = "spdlog-example";
auto syslog_logger = spdlog::syslog_logger_mt("syslog", ident, LOG_PID);
syslog_logger->warn("This is warning that will end up in syslog.");
}
#endif
// Android example.
#if defined(__ANDROID__)
#include "spdlog/sinks/android_sink.h"
void android_example()
{
std::string tag = "spdlog-android";
auto android_logger = spdlog::android_logger_mt("android", tag);
android_logger->critical("Use \"adb shell logcat\" to view this message.");
}
#endif
// Log patterns can contain custom flags.
// this will add custom flag '%*' which will be bound to a <my_formatter_flag> instance
#include "spdlog/pattern_formatter.h"
class my_formatter_flag : public spdlog::custom_flag_formatter
{
public:
void format(const spdlog::details::log_msg &, const std::tm &, spdlog::memory_buf_t &dest) override
{
std::string some_txt = "custom-flag";
dest.append(some_txt.data(), some_txt.data() + some_txt.size());
}
std::unique_ptr<custom_flag_formatter> clone() const override
{
return spdlog::details::make_unique<my_formatter_flag>();
}
};
void custom_flags_example()
{
spdlog::info("Default logger");
auto l1 = spdlog::stdout_color_mt("l1");
auto l2 = spdlog::stdout_color_mt("l2");
using spdlog::details::make_unique; // for pre c++14
auto formatter = make_unique<spdlog::pattern_formatter>();
formatter->add_flag<my_formatter_flag>('*').set_pattern("[%n] [%*] [%^%l%$] %v");
spdlog::set_formatter(std::move(formatter));
}
l1->debug("L1");
l2->trace("L2");
}
\ No newline at end of file
include/spdlog/details/registry-inl.h
View file @ cefe6772
......@@ -66,6 +66,7 @@ SPDLOG_INLINE void registry::initialize_logger(std::shared_ptr<logger> new_logge
{
new_logger->set_error_handler(err_handler_);
}
// check if log level for this logger name was already configured
auto cfg_level_it = cfg_levels_.find(new_logger->name());
if (cfg_level_it == cfg_levels_.end())
{
......@@ -277,32 +278,22 @@ SPDLOG_INLINE void registry::set_automatic_registration(bool automatic_registrat
SPDLOG_INLINE void registry::set_levels(std::unordered_map<std::string, spdlog::level::level_enum> levels)
{
std::lock_guard<std::mutex> lock(logger_map_mutex_);
cfg_levels_ = std::move(levels);
// update global level if found
// for each logger update level according to given map
// "*" entry means all loggers
auto global_level_it = cfg_levels_.find("*");
if (global_level_it != cfg_levels_.end())
{
auto global_level = global_level_it->second;
for (auto &logger : loggers_)
{
logger.second->set_level(global_level);
}
}
// update specific loggers
for (const auto &item : cfg_levels_)
for (auto &logger : loggers_)
{
const auto &logger_name = item.first;
if (logger_name == "*")
auto cfg_entry = cfg_levels_.find(logger.first);
if (cfg_entry != cfg_levels_.end())
{
continue;
logger.second->set_level(cfg_entry->second);
}
auto existing_logger_it = loggers_.find(logger_name);
if (existing_logger_it != loggers_.end())
else if (global_level_it != cfg_levels_.end())
{
auto level = item.second;
existing_logger_it->second->set_level(level);
logger.second->set_level(global_level_it->second);
}
}
}
......
include/spdlog/details/registry.h
View file @ cefe6772
......@@ -9,7 +9,6 @@
// This class is thread safe
#include <spdlog/common.h>
#include <spdlog/cfg/log_levels.h>
#include <chrono>
#include <functional>
......
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