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libbb: introduce and use xgettimeofday(), do not truncate 64-bit time_t in shells

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function                                             old     new   delta
xgettimeofday                                          -      11     +11
get_local_var_value                                  280     281      +1
svlogd_main                                         1323    1322      -1
change_epoch                                          67      66      -1
timestamp_and_log                                    461     458      -3
hwclock_main                                         301     298      -3
fmt_time_bernstein_25                                135     132      -3
step_time                                            331     326      -5
script_main                                         1207    1202      -5
machtime                                              34      28      -6
curtime                                               61      54      -7
ts_main                                              423     415      -8
nmeter_main                                          761     751     -10
gettime1900d                                          67      46     -21
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/12 up/down: 12/-73)           Total: -61 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2020-12-30 23:48:01 +01:00
parent 89a55972fd
commit 3c13da3dab
16 changed files with 46 additions and 34 deletions
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6
libbb/time.c
View File

@@ -291,19 +291,19 @@ unsigned FAST_FUNC monotonic_sec(void)
unsigned long long FAST_FUNC monotonic_ns(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
xgettimeofday(&tv);
return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
}
unsigned long long FAST_FUNC monotonic_us(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
xgettimeofday(&tv);
return tv.tv_sec * 1000000ULL + tv.tv_usec;
}
unsigned long long FAST_FUNC monotonic_ms(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
xgettimeofday(&tv);
return tv.tv_sec * 1000ULL + tv.tv_usec / 1000;
}
unsigned FAST_FUNC monotonic_sec(void)

11
libbb/xfuncs_printf.c
View File

@@ -720,3 +720,14 @@ void FAST_FUNC xsettimeofday(const struct timeval *tv)
if (settimeofday(tv, NULL))
bb_simple_perror_msg_and_die("settimeofday");
}
void FAST_FUNC xgettimeofday(struct timeval *tv)
{
#if 0
if (gettimeofday(tv, NULL))
bb_simple_perror_msg_and_die("gettimeofday");
#else
/* Never fails on Linux */
gettimeofday(tv, NULL);
#endif
}