Mercurial > octave
view liboctave/system/oct-time.cc @ 30192:8c8031be8072
Windows: Don't get pointers to C strings while vector is still unstable.
* src/main-cli.cc, src/main-gui.cc, src/main.in.cc, src/octave-config.in.cc,
src/octave-svgconvert.cc: The memory used by a vector is not guaranteed to be
stable when elements are added with push_back. Wait until vector is complete
before getting the pointers to the corresponding C strings.
author | Markus Mützel <markus.muetzel@gmx.de> |
---|---|
date | Thu, 16 Sep 2021 21:51:03 +0200 |
parents | f2f386d431ff |
children | 796f54d4ddbf |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1999-2021 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <cmath> #include <ctime> #include <iomanip> #include <limits> #include <ostream> #if defined (OCTAVE_USE_WINDOWS_API) # include <windows.h> #endif #include "lo-error.h" #include "lo-utils.h" #include "lo-sysdep.h" #include "oct-locbuf.h" #include "oct-time.h" #include "octave-preserve-stream-state.h" #include "strftime-wrapper.h" #include "strptime-wrapper.h" #include "time-wrappers.h" namespace octave { namespace sys { time::time (double d) : m_ot_unix_time (static_cast<time_t> (d)), m_ot_usec (0) { double ip; m_ot_usec = static_cast<int> (std::modf (d, &ip) * 1e6); } time::time (const base_tm& tm) : m_ot_unix_time (), m_ot_usec () { struct ::tm t; t.tm_sec = tm.sec (); t.tm_min = tm.min (); t.tm_hour = tm.hour (); t.tm_mday = tm.mday (); t.tm_mon = tm.mon (); t.tm_year = tm.year (); t.tm_wday = tm.wday (); t.tm_yday = tm.yday (); t.tm_isdst = tm.isdst (); #if defined (HAVE_TM_GMTOFF) t.tm_gmtoff = tm.gmtoff (); #endif #if defined (HAVE_STRUCT_TM_TM_ZONE) std::string s = tm.zone (); char *ps = strsave (s.c_str ()); t.tm_zone = ps; #endif m_ot_unix_time = octave_mktime_wrapper (&t); #if defined (HAVE_STRUCT_TM_TM_ZONE) delete [] ps; #endif m_ot_usec = tm.usec (); } std::string time::ctime (void) const { return localtime (*this).asctime (); } std::ostream& operator << (std::ostream& os, const time& ot) { preserve_stream_state stream_state (os); os << ot.m_ot_unix_time << '.' << std::setw (6) << std::setfill ('0') << ot.m_ot_usec; return os; } void time::stamp (void) { octave_gettimeofday_wrapper (&m_ot_unix_time, &m_ot_usec); } // From the mktime() manual page: // // The mktime() function converts a broken-down time structure, // expressed as local time, to calendar time representation. // // <snip> // // If structure members are outside their legal interval, they // will be normalized (so that, e.g., 40 October is changed into // 9 November). // // So, we no longer check limits here. #define DEFINE_SET_FIELD_FCN(type, f, lo, hi) \ base_tm& \ base_tm::f (type v) \ { \ m_ ## f = v; \ \ return *this; \ } #define DEFINE_SET_INT_FIELD_FCN(f, lo, hi) \ DEFINE_SET_FIELD_FCN (int, f, lo, hi) DEFINE_SET_INT_FIELD_FCN (usec, 0, 1000000) DEFINE_SET_INT_FIELD_FCN (sec, 0, 61) DEFINE_SET_INT_FIELD_FCN (min, 0, 59) DEFINE_SET_INT_FIELD_FCN (hour, 0, 23) DEFINE_SET_INT_FIELD_FCN (mday, 1, 31) DEFINE_SET_INT_FIELD_FCN (mon, 0, 11) DEFINE_SET_INT_FIELD_FCN (year, std::numeric_limits<int>::min (), std::numeric_limitd<int>::max ()) DEFINE_SET_INT_FIELD_FCN (wday, 0, 6) DEFINE_SET_INT_FIELD_FCN (yday, 0, 365) DEFINE_SET_INT_FIELD_FCN (isdst, 0, 1) DEFINE_SET_FIELD_FCN (long, gmtoff, -86400, 0) base_tm& base_tm::zone (const std::string& s) { m_zone = s; return *this; } #if ! defined STRFTIME_BUF_INITIAL_SIZE # define STRFTIME_BUF_INITIAL_SIZE 128 #endif std::string base_tm::strftime (const std::string& fmt) const { std::string retval; if (! fmt.empty ()) { struct ::tm t; t.tm_sec = m_sec; t.tm_min = m_min; t.tm_hour = m_hour; t.tm_mday = m_mday; t.tm_mon = m_mon; t.tm_year = m_year; t.tm_wday = m_wday; t.tm_yday = m_yday; t.tm_isdst = m_isdst; #if defined (HAVE_TM_GMTOFF) t.tm_gmtoff = m_gmtoff; #endif #if defined (HAVE_STRUCT_TM_TM_ZONE) char *ps = strsave (m_zone.c_str ()); t.tm_zone = ps; #endif const char *fmt_str = fmt.c_str (); char *buf = nullptr; std::size_t bufsize = STRFTIME_BUF_INITIAL_SIZE; std::size_t chars_written = 0; while (chars_written == 0) { delete [] buf; buf = new char [bufsize]; buf[0] = '\0'; chars_written = octave_strftime_wrapper (buf, bufsize, fmt_str, &t); bufsize *= 2; } #if defined (HAVE_STRUCT_TM_TM_ZONE) delete [] ps; #endif retval = buf; delete [] buf; } return retval; } void base_tm::init (void *p) { if (! p) return; struct ::tm *t = static_cast<struct ::tm *> (p); m_sec = t->tm_sec; m_min = t->tm_min; m_hour = t->tm_hour; m_mday = t->tm_mday; m_mon = t->tm_mon; m_year = t->tm_year; m_wday = t->tm_wday; m_yday = t->tm_yday; m_isdst = t->tm_isdst; #if defined (HAVE_TM_GMTOFF) m_gmtoff = t->tm_gmtoff; #elif defined (OCTAVE_USE_WINDOWS_API) TIME_ZONE_INFORMATION tzi; GetTimeZoneInformationForYear (m_year, nullptr, &tzi); if (m_isdst) m_gmtoff = -60 * (tzi.Bias + tzi.DaylightBias); else m_gmtoff = -60 * (tzi.Bias + tzi.StandardBias); #endif #if defined (HAVE_STRUCT_TM_TM_ZONE) if (t->tm_zone) m_zone = t->tm_zone; #elif defined (OCTAVE_USE_WINDOWS_API) if (m_isdst) m_zone = sys::u8_from_wstring (tzi.DaylightName); else m_zone = sys::u8_from_wstring (tzi.StandardName); #elif defined (HAVE_TZNAME) if (t->tm_isdst == 0 || t->tm_isdst == 1) m_zone = tzname[t->tm_isdst]; #endif } void localtime::init (const time& ot) { m_usec = ot.usec (); time_t t = ot.unix_time (); base_tm::init (std::localtime (&t)); } void gmtime::init (const time& ot) { m_usec = ot.usec (); time_t t = ot.unix_time (); base_tm::init (std::gmtime (&t)); } void strptime::init (const std::string& str, const std::string& fmt) { struct ::tm t; t.tm_sec = 0; t.tm_min = 0; t.tm_hour = 0; t.tm_mday = 0; t.tm_mon = -1; t.tm_year = std::numeric_limits<int>::min (); t.tm_wday = 0; t.tm_yday = 0; t.tm_isdst = 0; #if defined (HAVE_TM_GMTOFF) t.tm_gmtoff = 0; #endif #if defined (HAVE_STRUCT_TM_TM_ZONE) char *ps = strsave (""); t.tm_zone = ps; #endif const char *p = str.c_str (); char *q = octave_strptime_wrapper (p, fmt.c_str (), &t); // Fill in wday and yday, but only if mday is valid and the mon and year // are filled in, avoiding issues with mktime and invalid dates. if (t.tm_mday != 0 && t.tm_mon >= 0 && t.tm_year != std::numeric_limits<int>::min ()) { t.tm_isdst = -1; octave_mktime_wrapper (&t); } if (t.tm_mon < 0) t.tm_mon = 0; if (t.tm_year == std::numeric_limits<int>::min ()) t.tm_year = 0; if (q) m_nchars = q - p + 1; else m_nchars = 0; base_tm::init (&t); #if defined (HAVE_STRUCT_TM_TM_ZONE) delete [] ps; #endif } void cpu_time::stamp (void) { octave_cpu_time (&m_usr_sec, &m_sys_sec, &m_usr_usec, &m_sys_usec); } void resource_usage::stamp (void) { time_t usr_sec, sys_sec; long usr_usec, sys_usec; octave_getrusage_wrapper (&usr_sec, &sys_sec, &usr_usec, &sys_usec, &m_maxrss, &m_ixrss, &m_idrss, &m_isrss, &m_minflt, &m_majflt, &m_nswap, &m_inblock, &m_oublock, &m_msgsnd, &m_msgrcv, &m_nsignals, &m_nvcsw, &m_nivcsw); m_cpu = cpu_time (usr_sec, sys_sec, usr_usec, sys_usec); } } }