Mercurial > gnulib
view lib/xnanosleep.c @ 40206:770a5696761e
relocatable-prog: Use wrapper-free installation on Mac OS X, take 2.
This approach supports relocatable installation of shared libraries
which depend on other shared libraries from the same package.
* m4/relocatable.m4 (gl_RELOCATABLE_BODY): Determine use_macos_tools.
If use_macos_tools is true, use reloc-ldflags and set LIBTOOL to be a
wrapper around the original LIBTOOL.
* build-aux/reloc-ldflags: Add support for Mac OS X, which uses the
token '@loader_path' instead of '$ORIGIN'.
* build-aux/libtool-reloc: New file.
* modules/relocatable-prog (Files): Add it.
* doc/relocatable-maint.texi (Supporting Relocation): Update to match
the recent changes. Document the need to set the *_LDFLAGS of libraries.
RELOCATABLE_LIBRARY_PATH and RELOCATABLE_CONFIG_H_DIR should be set in
Makefile.am, not in configure.ac.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 04 Mar 2019 17:25:09 +0100 |
parents | b06060465f09 |
children |
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/* xnanosleep.c -- a more convenient interface to nanosleep Copyright (C) 2002-2007, 2009-2019 Free Software Foundation, Inc. This program 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. This program 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 this program. If not, see <https://www.gnu.org/licenses/>. */ /* Mostly written (for sleep.c) by Paul Eggert. Factored out (creating this file) by Jim Meyering. */ #include <config.h> #include "xnanosleep.h" #include <timespec.h> #include <errno.h> #include <time.h> /* Sleep until the time (call it WAKE_UP_TIME) specified as SECONDS seconds after the time this function is called. SECONDS must be non-negative. If SECONDS is so large that it is not representable as a 'struct timespec', then use the maximum value for that interval. Return -1 on failure (setting errno), 0 on success. */ int xnanosleep (double seconds) { struct timespec ts_sleep = dtotimespec (seconds); for (;;) { /* Linux-2.6.8.1's nanosleep returns -1, but doesn't set errno when resumed after being suspended. Earlier versions would set errno to EINTR. nanosleep from linux-2.6.10, as well as implementations by (all?) other vendors, doesn't return -1 in that case; either it continues sleeping (if time remains) or it returns zero (if the wake-up time has passed). */ errno = 0; if (nanosleep (&ts_sleep, NULL) == 0) break; if (errno != EINTR && errno != 0) return -1; } return 0; }