/usr/include/spdlog/details/os.h is in libspdlog-dev 1.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* spdlog - an extremely fast and easy to use c++11 logging library. */
/* Copyright (c) 2014 Gabi Melman. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#pragma once
#include<string>
#include<cstdio>
#include<ctime>
#ifdef _WIN32
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <Windows.h>
#ifdef __MINGW32__
#include <share.h>
#endif
#elif __linux__
#include <sys/syscall.h> //Use gettid() syscall under linux to get thread id
#include <unistd.h>
#else
#include <thread>
#endif
#include "../common.h"
namespace spdlog
{
namespace details
{
namespace os
{
inline spdlog::log_clock::time_point now()
{
#if defined __linux__ && defined SPDLOG_CLOCK_COARSE
timespec ts;
::clock_gettime(CLOCK_REALTIME_COARSE, &ts);
return std::chrono::time_point<log_clock, typename log_clock::duration>(
std::chrono::duration_cast<typename log_clock::duration>(
std::chrono::seconds(ts.tv_sec) + std::chrono::nanoseconds(ts.tv_nsec)));
#else
return log_clock::now();
#endif
}
inline std::tm localtime(const std::time_t &time_tt)
{
#ifdef _WIN32
std::tm tm;
localtime_s(&tm, &time_tt);
#else
std::tm tm;
localtime_r(&time_tt, &tm);
#endif
return tm;
}
inline std::tm localtime()
{
std::time_t now_t = time(nullptr);
return localtime(now_t);
}
inline std::tm gmtime(const std::time_t &time_tt)
{
#ifdef _WIN32
std::tm tm;
gmtime_s(&tm, &time_tt);
#else
std::tm tm;
gmtime_r(&time_tt, &tm);
#endif
return tm;
}
inline std::tm gmtime()
{
std::time_t now_t = time(nullptr);
return gmtime(now_t);
}
inline bool operator==(const std::tm& tm1, const std::tm& tm2)
{
return (tm1.tm_sec == tm2.tm_sec &&
tm1.tm_min == tm2.tm_min &&
tm1.tm_hour == tm2.tm_hour &&
tm1.tm_mday == tm2.tm_mday &&
tm1.tm_mon == tm2.tm_mon &&
tm1.tm_year == tm2.tm_year &&
tm1.tm_isdst == tm2.tm_isdst);
}
inline bool operator!=(const std::tm& tm1, const std::tm& tm2)
{
return !(tm1 == tm2);
}
#ifdef _WIN32
inline const char* eol()
{
return "\r\n";
}
#else
constexpr inline const char* eol()
{
return "\n";
}
#endif
#ifdef _WIN32
inline unsigned short eol_size()
{
return 2;
}
#else
constexpr inline unsigned short eol_size()
{
return 1;
}
#endif
//fopen_s on non windows for writing
inline int fopen_s(FILE** fp, const std::string& filename, const char* mode)
{
#ifdef _WIN32
*fp = _fsopen((filename.c_str()), mode, _SH_DENYWR);
return *fp == nullptr;
#else
*fp = fopen((filename.c_str()), mode);
return *fp == nullptr;
#endif
}
//Return utc offset in minutes or -1 on failure
inline int utc_minutes_offset(const std::tm& tm = details::os::localtime())
{
#ifdef _WIN32
(void)tm; // avoid unused param warning
DYNAMIC_TIME_ZONE_INFORMATION tzinfo;
auto rv = GetDynamicTimeZoneInformation(&tzinfo);
if (!rv)
return -1;
return -1 * (tzinfo.Bias + tzinfo.DaylightBias);
#else
return static_cast<int>(tm.tm_gmtoff / 60);
#endif
}
//Return current thread id as size_t
//It exists because the std::this_thread::get_id() is much slower(espcially under VS 2013)
inline size_t thread_id()
{
#ifdef _WIN32
return static_cast<size_t>(::GetCurrentThreadId());
#elif __linux__
return static_cast<size_t>(syscall(SYS_gettid));
#else //Default to standard C++11 (OSX and other Unix)
return static_cast<size_t>(std::hash<std::thread::id>()(std::this_thread::get_id()));
#endif
}
} //os
} //details
} //spdlog
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