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https://github.com/minetest/minetest.git
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0d91ef78dd
This commit introduces mt_localtime() in src/gettime.h, a wrapper around the OS-specific thread-safe versions of localtime() (resp. localtime_s on Windows and localtime_r in other systems). Per the Open Group recommendation, «portable applications should call tzset() explicitly before using ctime_r() or localtime_r() because setting timezone information is optional for those functions», so we also do a one-shot call of tzset() (_tzset() on Windows to avoid warning C4996). The function is used to replace the localtime() calls in getTimestamp() and makeScreenshot(). (The only reminaing call to localtime() in the tree now is the one in the local copy of the Lua source code.)
65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#pragma once
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#include <ctime>
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#include <string>
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#include <mutex>
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enum TimePrecision
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{
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PRECISION_SECONDS,
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PRECISION_MILLI,
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PRECISION_MICRO,
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PRECISION_NANO
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};
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inline struct tm mt_localtime()
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{
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// initialize the time zone on first invocation
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static std::once_flag tz_init;
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std::call_once(tz_init, [] {
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#ifdef _WIN32
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_tzset();
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#else
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tzset();
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#endif
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});
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struct tm ret;
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time_t t = time(NULL);
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// TODO we should check if the function returns NULL, which would mean error
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#ifdef _WIN32
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localtime_s(&ret, &t);
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#else
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localtime_r(&t, &ret);
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#endif
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return ret;
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}
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inline std::string getTimestamp()
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{
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const struct tm tm = mt_localtime();
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char cs[20]; // YYYY-MM-DD HH:MM:SS + '\0'
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strftime(cs, 20, "%Y-%m-%d %H:%M:%S", &tm);
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return cs;
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}
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