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extend fractional duration support to "top -d N.N" and "timeout"

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function                                             old     new   delta
parse_duration_str                                     -     168    +168
sleep_for_duration                                     -     157    +157
top_main                                             885     928     +43
timeout_main                                         269     312     +43
handle_input                                         571     614     +43
duration_suffixes                                      -      40     +40
sfx                                                   40       -     -40
sleep_main                                           364      79    -285
------------------------------------------------------------------------------
(add/remove: 4/1 grow/shrink: 3/1 up/down: 494/-325)          Total: 169 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2018-08-03 18:17:12 +02:00
parent 9b1c8bf89b
commit 4c20d9f2b0
5 changed files with 101 additions and 81 deletions
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78
coreutils/sleep.c
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@@ -32,13 +32,6 @@
//config: depends on SLEEP
//config: help
//config: Allow sleep to pause for specified minutes, hours, and days.
//config:
//config:config FEATURE_FLOAT_SLEEP
//config: bool "Enable fractional arguments"
//config: default y
//config: depends on FEATURE_FANCY_SLEEP
//config: help
//config: Allow for fractional numeric parameters.
/* Do not make this applet NOFORK. It breaks ^C-ing of pauses in shells */
//applet:IF_SLEEP(APPLET(sleep, BB_DIR_BIN, BB_SUID_DROP))
@@ -66,89 +59,28 @@
#include "libbb.h"
#if ENABLE_FEATURE_FANCY_SLEEP || ENABLE_FEATURE_FLOAT_SLEEP
static const struct suffix_mult sfx[] = {
{ "s", 1 },
{ "m", 60 },
{ "h", 60*60 },
{ "d", 24*60*60 },
{ "", 0 }
};
#endif
int sleep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int sleep_main(int argc UNUSED_PARAM, char **argv)
{
#if ENABLE_FEATURE_FLOAT_SLEEP
double duration;
struct timespec ts;
#else
unsigned duration;
#endif
duration_t duration;
++argv;
if (!*argv)
bb_show_usage();
#if ENABLE_FEATURE_FLOAT_SLEEP
# if ENABLE_LOCALE_SUPPORT
#if ENABLE_FEATURE_FANCY_SLEEP
# if ENABLE_FLOAT_DURATION
/* undo busybox.c setlocale */
setlocale(LC_NUMERIC, "C");
# endif
duration = 0;
do {
char *arg = *argv;
if (strchr(arg, '.')) {
double d;
char *pp;
int len = strspn(arg, "0123456789.");
char sv = arg[len];
arg[len] = '\0';
errno = 0;
d = strtod(arg, &pp);
if (errno || *pp)
bb_show_usage();
arg += len;
*arg-- = sv;
sv = *arg;
*arg = '1';
duration += d * xatoul_sfx(arg, sfx);
*arg = sv;
} else {
duration += xatoul_sfx(arg, sfx);
}
duration += parse_duration_str(*argv);
} while (*++argv);
ts.tv_sec = MAXINT(typeof(ts.tv_sec));
ts.tv_nsec = 0;
if (duration >= 0 && duration < ts.tv_sec) {
ts.tv_sec = duration;
ts.tv_nsec = (duration - ts.tv_sec) * 1000000000;
}
do {
errno = 0;
nanosleep(&ts, &ts);
} while (errno == EINTR);
#elif ENABLE_FEATURE_FANCY_SLEEP
duration = 0;
do {
duration += xatou_range_sfx(*argv, 0, UINT_MAX - duration, sfx);
} while (*++argv);
sleep(duration);
sleep_for_duration(duration);
#else /* simple */
duration = xatou(*argv);
sleep(duration);
// Off. If it's really needed, provide example why
//if (sleep(duration)) {
// bb_perror_nomsg_and_die();
//}
#endif
return EXIT_SUCCESS;
}