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Simplify Emacs proper by using Gnulib’s boot-time module instead of doing it all by hand. This should port Emacs better to obscurish hosts, as Bruno Haible has merged the best of Emacs’s and Gnulib’s boot-time gathering. * lib/boot-time-aux.h, lib/boot-time.c, lib/boot-time.h: * lib/readutmp.h, m4/readutmp.m4: New files, copied from Gnulib. * admin/merge-gnulib (GNULIB_MODULES): Add boot-time. * configure.ac: Do not check for utmp.h; the boot-time module now does this. (BOOT_TIME_FILE): Remove; no longer used. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * src/filelock.c [__FreeBSD__]: Do not include <sys/sysctl.h>. [HAVE_UTMP_H]: Do not include utmp.h. Include boot-time instead: boot-time does the work now. (BOOT_TIME) [HAVE_ANDROID && !ANDROID_STUBIFY]: Don’t undef. (WTMP_FILE): Don’t define. (boot_time, boot_time_initialized, get_boot_time_1, get_boot_time): Remove. (get_boot_sec): New function that simply calls Gnulib get_boot_time. (lock_file_1, current_lock_owner): Use get_boot_sec instead of get_boot_time.
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* Determine the time when the machine last booted.
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Copyright (C) 2023 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation, either version 3 of the License,
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or (at your option) any later version.
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This file 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>. */
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#ifndef _BOOT_TIME_H
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#define _BOOT_TIME_H
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#include <time.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Store the approximate time when the machine last booted in *P_BOOT_TIME,
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and return 0. If it cannot be determined, return -1.
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This function is not multithread-safe, since on many platforms it
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invokes the functions setutxent, getutxent, endutxent. These
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functions are needed because they may lock FILE (so that we don't
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read garbage when a concurrent process writes to FILE), but their
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drawback is that they have a common global state. */
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extern int get_boot_time (struct timespec *p_boot_time);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _BOOT_TIME_H */
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