diff options
author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-06-17 23:09:05 +0400 |
---|---|---|
committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-06-17 23:09:05 +0400 |
commit | 459be35234cc24b69309eb0ee22600024c73713e (patch) | |
tree | 15ac4122d9c42ec75ba68d342827e37fcb1306ed /util-linux | |
parent | e79dd06782175d50f639180cde5b2c56933aa2ee (diff) |
hwclock: size optimizations
libbb/time.c: new file, introducing monotonic_us()
pscan, traceroute, arping: use it instead of gettimeofday
ping, zcip: TODO
function old new delta
monotonic_us - 89 +89
find_pair 164 180 +16
.rodata 129747 129763 +16
refresh 1144 1152 +8
............
timeout 8 4 -4
static.start 8 4 -4
last 8 4 -4
parse_conf 1303 1284 -19
time_main 1149 1124 -25
gettimeofday_us 39 - -39
arping_main 2042 1969 -73
hwclock_main 594 501 -93
catcher 485 380 -105
traceroute_main 4300 4117 -183
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 8/11 up/down: 157/-562) Total: -405 bytes
Diffstat (limited to 'util-linux')
-rw-r--r-- | util-linux/hwclock.c | 60 |
1 files changed, 27 insertions, 33 deletions
diff --git a/util-linux/hwclock.c b/util-linux/hwclock.c index c4b793ef8..204a103c3 100644 --- a/util-linux/hwclock.c +++ b/util-linux/hwclock.c @@ -7,7 +7,6 @@ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ -//#include <sys/ioctl.h> #include <sys/utsname.h> #include <getopt.h> #include "libbb.h" @@ -98,49 +97,42 @@ static void write_rtc(time_t t, int utc) close(rtc); } -static int show_clock(int utc) +static void show_clock(int utc) { - struct tm *ptm; + //struct tm *ptm; time_t t; - RESERVE_CONFIG_BUFFER(buffer, 64); + char *cp; t = read_rtc(utc); - ptm = localtime(&t); /* Sets 'tzname[]' */ + //ptm = localtime(&t); /* Sets 'tzname[]' */ - safe_strncpy(buffer, ctime(&t), 64); - if (buffer[0]) - buffer[strlen(buffer) - 1] = 0; + cp = ctime(&t); + if (cp[0]) + cp[strlen(cp) - 1] = '\0'; - //printf("%s %.6f seconds %s\n", buffer, 0.0, utc ? "" : (ptm->tm_isdst ? tzname[1] : tzname[0])); - printf( "%s %.6f seconds\n", buffer, 0.0); - RELEASE_CONFIG_BUFFER(buffer); - - return 0; + //printf("%s %.6f seconds %s\n", cp, 0.0, utc ? "" : (ptm->tm_isdst ? tzname[1] : tzname[0])); + printf("%s 0.000000 seconds\n", cp); } -static int to_sys_clock(int utc) +static void to_sys_clock(int utc) { - struct timeval tv = { 0, 0 }; + struct timeval tv; const struct timezone tz = { timezone/60 - 60*daylight, 0 }; tv.tv_sec = read_rtc(utc); - + tv.tv_usec = 0; if (settimeofday(&tv, &tz)) bb_perror_msg_and_die("settimeofday() failed"); - - return 0; } -static int from_sys_clock(int utc) +static void from_sys_clock(int utc) { - struct timeval tv = { 0, 0 }; - struct timezone tz = { 0, 0 }; - - if (gettimeofday(&tv, &tz)) - bb_perror_msg_and_die("gettimeofday() failed"); + struct timeval tv; + gettimeofday(&tv, NULL); + //if (gettimeofday(&tv, NULL)) + // bb_perror_msg_and_die("gettimeofday() failed"); write_rtc(tv.tv_sec, utc); - return 0; } #ifdef CONFIG_FEATURE_HWCLOCK_ADJTIME_FHS @@ -182,8 +174,8 @@ static int check_utc(void) #define HWCLOCK_OPT_SYSTOHC 0x10 #define HWCLOCK_OPT_RTCFILE 0x20 -int hwclock_main(int argc, char **argv ); -int hwclock_main(int argc, char **argv ) +int hwclock_main(int argc, char **argv); +int hwclock_main(int argc, char **argv) { unsigned opt; int utc; @@ -210,12 +202,14 @@ int hwclock_main(int argc, char **argv ) utc = check_utc(); if (opt & HWCLOCK_OPT_HCTOSYS) { - return to_sys_clock(utc); + to_sys_clock(utc); + return 0; } - else if (opt & HWCLOCK_OPT_SYSTOHC) { - return from_sys_clock(utc); - } else { - /* default HWCLOCK_OPT_SHOW */ - return show_clock(utc); + if (opt & HWCLOCK_OPT_SYSTOHC) { + from_sys_clock(utc); + return 0; } + /* default HWCLOCK_OPT_SHOW */ + show_clock(utc); + return 0; } |