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Diffstat (limited to 'mcon/U/d_ftime.U')
| -rw-r--r-- | mcon/U/d_ftime.U | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/mcon/U/d_ftime.U b/mcon/U/d_ftime.U new file mode 100644 index 0000000..f7c1095 --- /dev/null +++ b/mcon/U/d_ftime.U @@ -0,0 +1,100 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?RCS: $Log: d_ftime.U,v $ +?RCS: Revision 3.0 1993/08/18 12:06:06 ram +?RCS: Baseline for dist 3.0 netwide release. +?RCS: +?MAKE:d_ftime d_gettimeod: Trylink cat i_systimeb +?MAKE: -pick add $@ %< +?S:d_ftime: +?S: This variable conditionally defines the HAS_FTIME symbol, which indicates +?S: that the ftime() routine exists. The ftime() routine is basically +?S: a sub-second accuracy clock. +?S:. +?S:d_gettimeod: +?S: This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which +?S: indicates that the gettimeofday() system call exists (to obtain a +?S: sub-second accuracy clock). You should probably include <sys/resource.h>. +?S:. +?C:HAS_FTIME (FTIMER): +?C: This symbol, if defined, indicates that the ftime() routine exists. +?C: It is basically a sub-second accuracy clock, but is less accurate +?C: than gettimeofday(2) anyway. The type "Timeval" should be used to +?C: refer to "struct timeb". +?C:. +?C:HAS_GETTIMEOFDAY (GETTIMEOFDAY): +?C: This symbol, if defined, indicates that the gettimeofday() system +?C: call is available for a sub-second accuracy clock. Usually, the file +?C: <sys/resource.h> needs to be included (see I_SYS_RESOURCE). +?C: The type "Timeval" should be used to refer to "struct timeval". +?C:. +?H:#$d_ftime HAS_FTIME /**/ +?H:#$d_gettimeod HAS_GETTIMEOFDAY /**/ +?H:?%<:@if HAS_FTIME +?H:?%<:#ifdef HAS_FTIME +?H:?%<:#define Timeval struct timeb /* Structure used by ftime() */ +?H:?%<:#endif +?H:?%<:@end +?H:?%<:@if HAS_GETTIMEOFDAY +?H:?%<:#ifdef HAS_GETTIMEOFDAY +?H:?%<:#define Timeval struct timeval /* Structure used by gettimeofday() */ +?H:?%<:#endif +?H:?%<:@end +?H:. +?X:FIXME +?X:?I:?d_ftime:i_systimeb +?X:?I:?d_gettimeod:i_sysresrc +?LINT:set d_gettimeod d_ftime +?LINT:known Timeval +: see if gettimeofday or ftime exists +?X: +?X: Give priority to gettimeofday(2) because timing is more accurate +?X: +$cat >try.c <<EOC +#include <sys/time.h> +int main(void) +{ + static struct timeval tv; + static void *tz; + static int ret; + ret |= gettimeofday(&tv, tz); + return ret ? 0 : 1; +} +EOC +cyn=gettimeofday +set d_gettimeod +eval $trylink + +$cat >try.c <<EOC +#include <sys/types.h> +#$i_systimeb I_SYS_TIMEB +#ifdef I_SYS_TIMEB +#include <sys/timeb.h> +#endif +int main(void) +{ + static struct timeb t; + static int ret; + ret |= ftime(&t); + return ret ? 0 : 1; +} +EOC +cyn=ftime +set d_ftime +eval $trylink + +case "$d_gettimeod$d_ftime" in +"$undef$undef") + echo " " + echo 'No ftime() nor gettimeofday() -- timing may be less accurate.' >&4 + ;; +esac + |