Mercurial > hg > octave-lyh > gnulib-hg
changeset 5662:42df9db003cc
* modules/gethrxtime: New file.
* modules/xnanosleep (Files): Add m4/xnanosleep.m4.
(Depends-on): Add gethrxtime.
(configure.ac): Add gl_XNANOSLEEP.
(Makefile.am): Remove lib_SOURCES line.
* lib/gethrxtime.h, lib/gethrxtime.c, lib/xtime.h: New files.
* lib/timespec.h (gettime): Return void, since it always
succeeds now. All uses changed.
* lib/gettime.c (gettime) Likewise.
[HAVE_NANOTIME]: Prefer nanotime.
Assume gettimeofday succeeds, as POSIX requires.
Assime time () succeeds, since other code already does.
* lib/xnanosleep.c: Include xtime.h and gethrxtime.h, not xalloc.h.
(timespec_subtract): Remove.
(NANOSLEEP_BUG_WORKAROUND): New constant.
(xnanosleep): Use gethrxtime rather than gettime; this simplifies
things considerably. Use it only on GNU/Linux hosts, since the
workaround shouldn't be needed elsewhere.
* m4/gethrxtime.m4, m4/xnanosleep.m4: New files.
* m4/gettime.m4 (gl_GETTIME): Check for nanotime.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 26 Feb 2005 08:18:27 +0000 |
parents | fe760664f978 |
children | 29daa7f5310e |
files | ChangeLog lib/ChangeLog lib/getdate.y lib/gethrxtime.c lib/gethrxtime.h lib/gettime.c lib/timespec.h lib/xnanosleep.c lib/xtime.h m4/ChangeLog m4/gethrxtime.m4 m4/gettime.m4 m4/xnanosleep.m4 modules/gethrxtime modules/xnanosleep |
diffstat | 15 files changed, 458 insertions(+), 116 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,11 @@ +2005-02-26 Paul Eggert <eggert@cs.ucla.edu> + + * modules/gethrxtime: New file. + * modules/xnanosleep (Files): Add m4/xnanosleep.m4. + (Depends-on): Add gethrxtime. + (configure.ac): Add gl_XNANOSLEEP. + (Makefile.am): Remove lib_SOURCES line. + 2005-02-24 Bruno Haible <bruno@clisp.org> * modules/gettext (Files): Add m4/glibc2.m4.
--- a/lib/ChangeLog +++ b/lib/ChangeLog @@ -1,3 +1,19 @@ +2005-02-25 Paul Eggert <eggert@cs.ucla.edu> + + * gethrxtime.h, gethrxtime.c, xtime.h: New files. + * timespec.h (gettime): Return void, since it always + succeeds now. All uses changed. + * gettime.c (gettime) Likewise. + [HAVE_NANOTIME]: Prefer nanotime. + Assume gettimeofday succeeds, as POSIX requires. + Assime time () succeeds, since other code already does. + * xnanosleep.c: Include xtime.h and gethrxtime.h, not xalloc.h. + (timespec_subtract): Remove. + (NANOSLEEP_BUG_WORKAROUND): New constant. + (xnanosleep): Use gethrxtime rather than gettime; this simplifies + things considerably. Use it only on GNU/Linux hosts, since the + workaround shouldn't be needed elsewhere. + 2005-02-24 Bruno Haible <bruno@clisp.org> * gettext.h: Update from GNU gettext 0.14.2.
--- a/lib/getdate.y +++ b/lib/getdate.y @@ -1,6 +1,8 @@ %{ /* Parse a string into an internal time stamp. - Copyright (C) 1999, 2000, 2002, 2003, 2004 Free Software Foundation, Inc. + + Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005 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 @@ -1125,8 +1127,7 @@ if (! now) { - if (gettime (&gettime_buffer) != 0) - return false; + gettime (&gettime_buffer); now = &gettime_buffer; }
new file mode 100644 --- /dev/null +++ b/lib/gethrxtime.c @@ -0,0 +1,80 @@ +/* gethrxtime -- get high resolution real time + + Copyright (C) 2005 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 2, 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, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Written by Paul Eggert. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include "gethrxtime.h" + +#include <sys/types.h> +#if TIME_WITH_SYS_TIME +# include <sys/time.h> +# include <time.h> +#else +# if HAVE_SYS_TIME_H +# include <sys/time.h> +# else +# include <time.h> +# endif +#endif + +/* Get the time of a high-resolution clock, preferably one that is not + subject to resetting or drifting. */ + +xtime_t +gethrxtime (void) +{ +#if HAVE_NANOUPTIME + { + struct timespec ts; + nanouptime (&ts); + return xtime_make (ts.tv_sec, ts.tv_nsec); + } +#else + +# if defined CLOCK_MONOTONIC && HAVE_CLOCK_GETTIME + { + struct timespec ts; + if (clock_gettime (CLOCK_MONOTONIC, &ts) == 0) + return xtime_make (ts.tv_sec, ts.tv_nsec); + } +# endif + +#if HAVE_MICROUPTIME + { + struct timeval tv; + microuptime (&tv); + return xtime_make (tv.tv_sec, 1000 * tv.tv_usec); + } + + /* No monotonically increasing clocks are available; fall back on a + clock that might jump backwards, since it's the best we can do. */ +# elif HAVE_GETTIMEOFDAY && XTIME_PRECISION != 1 + { + struct timeval tv; + gettimeofday (&tv, NULL); + return xtime_make (tv.tv_sec, 1000 * tv.tv_usec); + } +# else + return xtime_make (time (NULL), 0); +# endif +#endif +}
new file mode 100644 --- /dev/null +++ b/lib/gethrxtime.h @@ -0,0 +1,37 @@ +/* gethrxtime -- get high resolution real time + + Copyright (C) 2005 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 2, 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, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Written by Paul Eggert. */ + +#ifndef GETHRXTIME_H_ +#define GETHRXTIME_H_ 1 + +#include "xtime.h" + +/* Get the current time, as a count of the number of nanoseconds since + an arbitrary epoch (e.g., the system boot time). This clock can't + be set, is always increasing, and is nearly linear. */ + +#if HAVE_ARITHMETIC_HRTIME_T && HAVE_DECL_GETHRTIME +# include <time.h> +static inline xtime_t gethrxtime (void) { return gethrtime (); } +#else +xtime_t gethrxtime (void); +#endif + +#endif
--- a/lib/gettime.c +++ b/lib/gettime.c @@ -1,5 +1,5 @@ /* gettime -- get the system clock - Copyright (C) 2002, 2004 Free Software Foundation, Inc. + Copyright (C) 2002, 2004, 2005 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 @@ -23,37 +23,31 @@ #include "timespec.h" -/* Get the system time. */ +/* Get the system time into *TS. */ -int +void gettime (struct timespec *ts) { -#if defined CLOCK_REALTIME && HAVE_CLOCK_GETTIME +#if HAVE_NANOTIME + nanotime (ts); +#else + +# if defined CLOCK_REALTIME && HAVE_CLOCK_GETTIME if (clock_gettime (CLOCK_REALTIME, ts) == 0) - return 0; -#endif + return; +# endif -#if HAVE_GETTIMEOFDAY +# if HAVE_GETTIMEOFDAY { struct timeval tv; - if (gettimeofday (&tv, 0) == 0) - { - ts->tv_sec = tv.tv_sec; - ts->tv_nsec = tv.tv_usec * 1000; - return 0; - } + gettimeofday (&tv, NULL); + ts->tv_sec = tv.tv_sec; + ts->tv_nsec = tv.tv_usec * 1000; } -#endif +# else + ts->tv_sec = time (NULL); + ts->tv_nsec = 0; +# endif - { - time_t t = time (0); - if (t != (time_t) -1) - { - ts->tv_sec = t; - ts->tv_nsec = 0; - return 0; - } - } - - return -1; +#endif }
--- a/lib/timespec.h +++ b/lib/timespec.h @@ -1,6 +1,6 @@ /* timespec -- System time interface - Copyright (C) 2000, 2002, 2004 Free Software Foundation, Inc. + Copyright (C) 2000, 2002, 2004, 2005 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 @@ -65,7 +65,7 @@ int nanosleep (); # endif -int gettime (struct timespec *); +void gettime (struct timespec *); int settime (struct timespec const *); #endif
--- a/lib/xnanosleep.c +++ b/lib/xnanosleep.c @@ -1,5 +1,5 @@ /* xnanosleep.c -- a more convenient interface to nanosleep - Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. + Copyright (C) 2002, 2003, 2004, 2005 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 @@ -32,6 +32,10 @@ #include <sys/types.h> #include <time.h> +#include "timespec.h" +#include "gethrxtime.h" +#include "xtime.h" + /* The extra casts work around common compiler bugs. */ #define TYPE_SIGNED(t) (! ((t) 0 < (t) -1)) /* The outer cast is needed to work around a bug in Cray C 5.0.3.0. @@ -44,44 +48,18 @@ # define TIME_T_MAX TYPE_MAXIMUM (time_t) #endif -#include "timespec.h" -#include "xalloc.h" - -/* Subtract the `struct timespec' values X and Y by computing X - Y. - If the difference is negative or zero, return false. - Otherwise, return true and store the difference in DIFF. - X and Y must have valid ts_nsec values, in the range 0 to 999999999. - If the difference would overflow, store the maximum possible difference. */ - -static bool -timespec_subtract (struct timespec *diff, - struct timespec const *x, struct timespec const *y) -{ - time_t sec = x->tv_sec - y->tv_sec; - long int nsec = x->tv_nsec - y->tv_nsec; - - if (x->tv_sec < y->tv_sec) - return false; - - if (sec < 0) - { - /* The difference has overflowed. */ - sec = TIME_T_MAX; - nsec = 999999999; - } - else if (sec == 0 && nsec <= 0) - return false; - - if (nsec < 0) - { - sec--; - nsec += 1000000000; - } - - diff->tv_sec = sec; - diff->tv_nsec = nsec; - return true; -} +/* POSIX.1-2001 requires that when a process is suspended, then + resumed, nanosleep (A, B) returns -1, sets errno to EINTR, and sets + *B to the time remaining at the point of resumption. However, some + versions of the Linux kernel incorrectly return the time remaining + at the point of suspension. Work around this bug on GNU/Linux + hosts by computing the remaining time here after nanosleep returns, + rather than by relying on nanosleep's computation. */ +#ifdef __linux__ +enum { NANOSLEEP_BUG_WORKAROUND = true }; +#else +enum { NANOSLEEP_BUG_WORKAROUND = false }; +#endif /* Sleep until the time (call it WAKE_UP_TIME) specified as SECONDS seconds after the time this function is called. @@ -93,22 +71,29 @@ int xnanosleep (double seconds) { - bool overflow; + enum { BILLION = 1000000000 }; + + bool overflow = false; double ns; - struct timespec ts_start; struct timespec ts_sleep; - struct timespec ts_stop; + xtime_t stop = 0; assert (0 <= seconds); - if (gettime (&ts_start) != 0) - return -1; + if (NANOSLEEP_BUG_WORKAROUND) + { + xtime_t now = gethrxtime (); + double increment = XTIME_PRECISION * seconds; + xtime_t incr = increment; + stop = now + incr + (incr < increment); + overflow = (stop < now); + } /* Separate whole seconds from nanoseconds. Be careful to detect any overflow. */ ts_sleep.tv_sec = seconds; - ns = 1e9 * (seconds - ts_sleep.tv_sec); - overflow = ! (ts_sleep.tv_sec <= seconds && 0 <= ns && ns <= 1e9); + ns = BILLION * (seconds - ts_sleep.tv_sec); + overflow |= ! (ts_sleep.tv_sec <= seconds && 0 <= ns && ns <= BILLION); ts_sleep.tv_nsec = ns; /* Round up to the next whole number, if necessary, so that we @@ -119,7 +104,7 @@ ts_sleep.tv_nsec += (ts_sleep.tv_nsec < ns); /* Normalize the interval length. nanosleep requires this. */ - if (1000000000 <= ts_sleep.tv_nsec) + if (BILLION <= ts_sleep.tv_nsec) { time_t t = ts_sleep.tv_sec + 1; @@ -127,45 +112,34 @@ overflow |= (t < ts_sleep.tv_sec); ts_sleep.tv_sec = t; - ts_sleep.tv_nsec -= 1000000000; - } - - /* Compute the time until which we should sleep. */ - ts_stop.tv_sec = ts_start.tv_sec + ts_sleep.tv_sec; - ts_stop.tv_nsec = ts_start.tv_nsec + ts_sleep.tv_nsec; - if (1000000000 <= ts_stop.tv_nsec) - { - ++ts_stop.tv_sec; - ts_stop.tv_nsec -= 1000000000; + ts_sleep.tv_nsec -= BILLION; } - /* Detect integer overflow. */ - overflow |= (ts_stop.tv_sec < ts_start.tv_sec - || (ts_stop.tv_sec == ts_start.tv_sec - && ts_stop.tv_nsec < ts_start.tv_nsec)); - - if (overflow) + for (;;) { - /* Fix ts_sleep and ts_stop, which may be garbage due to overflow. */ - ts_sleep.tv_sec = ts_stop.tv_sec = TIME_T_MAX; - ts_sleep.tv_nsec = ts_stop.tv_nsec = 999999999; - } + if (overflow) + { + ts_sleep.tv_sec = TIME_T_MAX; + ts_sleep.tv_nsec = BILLION - 1; + } - while (nanosleep (&ts_sleep, NULL) != 0) - { - if (errno != EINTR || gettime (&ts_start) != 0) + if (nanosleep (&ts_sleep, NULL) == 0) + break; + if (errno != EINTR) return -1; - /* POSIX.1-2001 requires that when a process is suspended, then - resumed, nanosleep (A, B) returns -1, sets errno to EINTR, - and sets *B to the time remaining at the point of resumption. - However, some versions of the Linux kernel incorrectly return - the time remaining at the point of suspension. Work around - this bug by computing the remaining time here, rather than by - relying on nanosleep's computation. */ - - if (! timespec_subtract (&ts_sleep, &ts_stop, &ts_start)) - break; + if (NANOSLEEP_BUG_WORKAROUND) + { + xtime_t now = gethrxtime (); + if (stop <= now) + break; + else + { + xtime_t remaining = stop - now; + ts_sleep.tv_sec = xtime_nonnegative_sec (remaining); + ts_sleep.tv_nsec = xtime_nonnegative_nsec (remaining); + } + } } return 0;
new file mode 100644 --- /dev/null +++ b/lib/xtime.h @@ -0,0 +1,87 @@ +/* xtime -- extended-resolution integer time stamps + + Copyright (C) 2005 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 2, 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, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Written by Paul Eggert. */ + +#ifndef XTIME_H_ +#define XTIME_H_ 1 + +/* xtime_t is a signed type used for time stamps. It is an integer + type that is a count of nanoseconds -- except for obsolescent hosts + without sufficiently-wide integers, where it is a count of + seconds. */ +#if HAVE_LONG_LONG +typedef long long int xtime_t; +# define XTIME_PRECISION 1000000000LL +#else +# include <limits.h> +typedef long int xtime_t; +# if LONG_MAX >> 31 >> 31 == 0 +# define XTIME_PRECISION 1L +# else +# define XTIME_PRECISION 1000000000L +# endif +#endif + +/* Return an extended time value that contains S seconds and NS + nanoseconds, without any overflow checking. */ +static inline xtime_t +xtime_make (xtime_t s, int ns) +{ + if (XTIME_PRECISION == 1) + return s; + else + return XTIME_PRECISION * s + ns; +} + +/* Return the number of seconds in T, which must be nonnegative. */ +static inline xtime_t +xtime_nonnegative_sec (xtime_t t) +{ + return t / XTIME_PRECISION; +} + +/* Return the number of seconds in T. */ +static inline xtime_t +xtime_sec (xtime_t t) +{ + return (XTIME_PRECISION == 1 + ? t + : t < 0 + ? (t + XTIME_PRECISION - 1) / XTIME_PRECISION - 1 + : xtime_nonnegative_sec (t)); +} + +/* Return the number of nanoseconds in T, which must be nonnegative. */ +static inline int +xtime_nonnegative_nsec (xtime_t t) +{ + return t % XTIME_PRECISION; +} + +/* Return the number of nanoseconds in T. */ +static inline int +xtime_nsec (xtime_t t) +{ + int ns = t % XTIME_PRECISION; + if (ns < 0) + ns += XTIME_PRECISION; + return ns; +} + +#endif
--- a/m4/ChangeLog +++ b/m4/ChangeLog @@ -1,3 +1,8 @@ +2005-02-25 Paul Eggert <eggert@cs.ucla.edu> + + * gethrxtime.m4, xnanosleep.m4: New files. + * gettime.m4 (gl_GETTIME): Check for nanotime. + 2005-02-24 Bruno Haible <bruno@clisp.org> * gettext.m4, intdiv0.m4, intmax.m4, inttypes-pri.m4, lcmessage.m4:
new file mode 100644 --- /dev/null +++ b/m4/gethrxtime.m4 @@ -0,0 +1,76 @@ +# gethrxtime.m4 serial 2 +dnl Copyright (C) 2005 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl Written by Paul Eggert. + +AC_DEFUN([gl_GETHRXTIME], +[ + AC_LIBSOURCES([gethrxtime.c, gethrxtime.h, xtime.h]) + AC_REQUIRE([gl_ARITHMETIC_HRTIME_T]) + AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) + AC_REQUIRE([gl_XTIME]) + AC_CHECK_DECLS([gethrtime], [], [], [#include <time.h>]) + case $ac_cv_have_decl_gethrtime,$gl_cv_arithmetic_hrtime_t in + yes,yes) ;; + *) + AC_LIBOBJ([gethrxtime]) + gl_PREREQ_GETHRXTIME;; + esac +]) + +# Test whether hrtime_t is an arithmetic type. +# It is not arithmetic in older Solaris c89 (which insists on +# not having a long long int type). +AC_DEFUN([gl_ARITHMETIC_HRTIME_T], +[ + AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) + AC_CACHE_CHECK([for arithmetic hrtime_t], gl_cv_arithmetic_hrtime_t, + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([#include <time.h>], + [hrtime_t x = 0; return x/x;])], + [gl_cv_arithmetic_hrtime_t=yes], + [gl_cv_arithmetic_hrtime_t=no])]) + if test $gl_cv_arithmetic_hrtime_t = yes; then + AC_DEFINE([HAVE_ARITHMETIC_HRTIME_T], 1, + [Define if you have an arithmetic hrtime_t type.]) + fi +]) + +# Prerequisites of lib/xtime.h. +AC_DEFUN([gl_XTIME], +[ + AC_REQUIRE([AC_C_INLINE]) + AC_REQUIRE([gl_AC_TYPE_LONG_LONG]) + : +]) + +# Prerequisites of lib/gethrxtime.c. +AC_DEFUN([gl_PREREQ_GETHRXTIME], +[ + AC_REQUIRE([AC_HEADER_TIME]) + AC_REQUIRE([gl_CLOCK_TIME]) + AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) + AC_CHECK_FUNCS_ONCE(gettimeofday microuptime nanouptime) + + if test $ac_cv_func_nanouptime != yes; then + LIB_GETHRXTIME= + AC_CACHE_CHECK([whether CLOCK_MONOTONIC is defined], + gl_cv_have_CLOCK_MONOTONIC, + [AC_EGREP_CPP([have_CLOCK_MONOTONIC], + [ +# include <time.h> +# ifdef CLOCK_MONOTONIC + have_CLOCK_MONOTONIC +# endif + ], + gl_cv_have_CLOCK_MONOTONIC=yes, + gl_cv_have_CLOCK_MONOTONIC=no)]) + if test $gl_cv_have_CLOCK_MONOTONIC = yes; then + LIB_GETHRXTIME=$LIB_CLOCK_GETTIME + fi + AC_SUBST([LIB_GETHRXTIME]) + fi +])
--- a/m4/gettime.m4 +++ b/m4/gettime.m4 @@ -1,13 +1,16 @@ -# gettime.m4 serial 3 -dnl Copyright (C) 2002, 2004 Free Software Foundation, Inc. +# gettime.m4 serial 5 +dnl Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_GETTIME], [ + AC_LIBSOURCES([gettime.c]) + AC_LIBOBJ([gettime]) + dnl Prerequisites of lib/gettime.c. AC_REQUIRE([gl_CLOCK_TIME]) AC_REQUIRE([gl_TIMESPEC]) - AC_CHECK_FUNCS_ONCE(gettimeofday) + AC_CHECK_FUNCS_ONCE(gettimeofday nanotime) ])
new file mode 100644 --- /dev/null +++ b/m4/xnanosleep.m4 @@ -0,0 +1,35 @@ +# xnanosleep.m4 serial 1 +dnl Copyright (C) 2005 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl Written by Paul Eggert. + +AC_DEFUN([gl_XNANOSLEEP], +[ + AC_LIBSOURCES([xnanosleep.c, xnanosleep.h]) + AC_LIBOBJ([xnanosleep]) + + dnl Prerequisites of lib/xnanosleep.c. + AC_REQUIRE([gl_PREREQ_GETHRXTIME]) + + LIB_XNANOSLEEP= + case $LIB_GETHRXTIME in + ?*) + AC_CACHE_CHECK([whether __linux__ is defined], + gl_cv_have___linux__, + [AC_EGREP_CPP([have___linux__], + [ +# ifdef __linux__ + have___linux__ +# endif + ], + gl_cv_have___linux__=yes, + gl_cv_have___linux__=no)]) + if test $gl_cv_have___linux__ = yes; then + LIB_XNANOSLEEP=$LIB_GETHRXTIME + fi;; + esac + AC_SUBST([LIB_XNANOSLEEP]) +])
new file mode 100644 --- /dev/null +++ b/modules/gethrxtime @@ -0,0 +1,26 @@ +Description: +Get high resolution real time. + +Files: +lib/xtime.h +lib/gethrxtime.c +m4/gethrxtime.m4 +m4/clock_time.m4 +m4/longlong.m4 + +Depends-on: +extensions + +configure.ac: +gl_GETHRXTIME + +Makefile.am: + +Include: +#include "xtime.h" + +License: +GPL + +Maintainer: +Paul Eggert
--- a/modules/xnanosleep +++ b/modules/xnanosleep @@ -4,15 +4,16 @@ Files: lib/xnanosleep.h lib/xnanosleep.c +m4/xnanosleep.m4 Depends-on: timespec -xalloc +gethrxtime configure.ac: +gl_XNANOSLEEP Makefile.am: -lib_SOURCES += xnanosleep.h xnanosleep.c Include: "xnanosleep.h" @@ -22,4 +23,3 @@ Maintainer: Paul Eggert, Jim Meyering -