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spdlog
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Prevent clang-tidy warning at example.cpp

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Minor changes to reduce build time
pull/1438/head
ClausKlein 6 years ago
parent 9b250b81b1
commit 01ce7268ce
5 changed files with 55 additions and 20 deletions
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1
.gitignore vendored
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@ -49,6 +49,7 @@ example/*
!example/bench.cpp
!example/utils.h
!example/Makefile*
!example/GNUMakefile
!example/example.sln
!example/example.vcxproj
!example/CMakeLists.txt

4
CMakeLists.txt
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@ -61,8 +61,8 @@ option(SPDLOG_BUILD_EXAMPLE "Build example" ${SPDLOG_MASTER_PROJECT})
option(SPDLOG_BUILD_EXAMPLE_HO "Build header only example" OFF)
# testing options
# option(SPDLOG_BUILD_TESTS "Build tests" ${SPDLOG_MASTER_PROJECT})
# option(SPDLOG_BUILD_TESTS_HO "Build tests using the header only version" ${SPDLOG_MASTER_PROJECT})
option(SPDLOG_BUILD_TESTS "Build tests" ${SPDLOG_MASTER_PROJECT})
option(SPDLOG_BUILD_TESTS_HO "Build tests using the header only version" OFF)
# bench options
option(SPDLOG_BUILD_BENCH "Build benchmarks (Requires https://github.com/google/benchmark.git to be installed)" OFF)

4
example/CMakeLists.txt
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@ -1,12 +1,14 @@
# Copyright(c) 2019 spdlog authors
# Distributed under the MIT License (http://opensource.org/licenses/MIT)
cmake_minimum_required(VERSION 3.12)
project(spdlog_examples CXX)
if(NOT TARGET spdlog)
# Stand-alone build
include(../cmake/clang-tidy.cmake)
include(../cmake/utils.cmake)
find_package(spdlog REQUIRED)
endif()

1
example/GNUmakefile
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@ -0,0 +1 @@
../GNUmakefile

65
example/example.cpp
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@ -3,8 +3,10 @@
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
// spdlog usage example
#include "spdlog/spdlog.h"
#include <cstdio>
#include <chrono>
void stdout_logger_example();
void basic_example();
@ -18,14 +20,40 @@ void user_defined_example();
void err_handler_example();
void syslog_example();
#include "spdlog/spdlog.h"
constexpr int magic_2{2};
constexpr int magic_3{3};
constexpr int magic_10{10};
constexpr int magic_12{12};
constexpr int magic_14{14};
constexpr int magic_30{30};
constexpr int magic_42{42};
constexpr int magic_100{100};
constexpr int five_MB{5 * 1024 * 1024};
constexpr float magic_float{1.23456F};
constexpr long double pi{3.14159265358979323846264L};
// https://en.cppreference.com/w/cpp/language/user_literal
// Note: use '-fext-numeric-literals' to enable more built-in suffixes
// used as conversion
#if 0
constexpr long double operator"" _deg(long double deg)
{
return deg * pi / 180;
}
constexpr size_t operator"" _MB(size_t n)
{
return n * 1024 * 1024;
}
#endif
int main(int, char *[])
int main()
{
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::warn("Easy padding in numbers like {:08d}", magic_12);
spdlog::critical("Support for int: {0:d}; hex: {0:x}; oct: {0:o}; bin: {0:b}", magic_42);
spdlog::info("Support for floats {:03.2f}", magic_float);
spdlog::info("Positional args are {1} {0}..", "too", "supported");
spdlog::info("{:>8} aligned, {:<8} aligned", "right", "left");
@ -44,8 +72,8 @@ int main(int, char *[])
// 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::enable_backtrace(magic_10); // create ring buffer with capacity of 10 messages
for (int i = 0; i < magic_100; i++)
{
spdlog::debug("Backtrace message {}", i); // not logged..
}
@ -65,9 +93,10 @@ int main(int, char *[])
err_handler_example();
trace_example();
using namespace std::chrono_literals; // C++14
// 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));
spdlog::flush_every((3s));
// Apply some function on all registered loggers
spdlog::apply_all([&](std::shared_ptr<spdlog::logger> l) { l->info("End of example."); });
@ -106,14 +135,14 @@ void basic_example()
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);
auto rotating_logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", five_MB, magic_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);
auto daily_logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", magic_2, magic_30);
}
#include "spdlog/async.h"
@ -125,7 +154,8 @@ void async_example()
// 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)
constexpr int loops{101};
for (int i = 1; i < loops; ++i)
{
async_file->info("Async message #{}", i);
}
@ -143,13 +173,14 @@ void async_example()
#include "spdlog/fmt/bin_to_hex.h"
void binary_example()
{
std::vector<char> buf(80);
for (int i = 0; i < 80; i++)
constexpr int len{80};
std::vector<char> buf(len);
for (int i = 0; i < len; 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));
spdlog::info("Another binary example:{:n}", spdlog::to_hex(std::begin(buf), std::begin(buf) + magic_10));
// more examples:
// logger->info("uppercase: {:X}", spdlog::to_hex(buf));
// logger->info("uppercase, no delimiters: {:Xs}", spdlog::to_hex(buf));
@ -161,9 +192,9 @@ void binary_example()
void trace_example()
{
// trace from default logger
SPDLOG_TRACE("Some trace message.. {} ,{}", 1, 3.23);
SPDLOG_TRACE("Some trace message.. {} ,{}", 1, pi);
// debug from default logger
SPDLOG_DEBUG("Some debug message.. {} ,{}", 1, 3.23);
SPDLOG_DEBUG("Some debug message.. {} ,{}", 1, pi);
// trace from logger object
auto logger = spdlog::get("file_logger");
@ -200,7 +231,7 @@ struct my_type
void user_defined_example()
{
spdlog::info("user defined type: {}", my_type{14});
spdlog::info("user defined type: {}", my_type{magic_14});
}
// Custom error handler. Will be triggered on log failure.

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