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authorDenis Vlasenko2008-06-29 02:25:53 +0000
committerDenis Vlasenko2008-06-29 02:25:53 +0000
commitce13b7600277478055de0b7c38b483a76145efd2 (patch)
treeb952e4328f8e182099fb3d72afc5c8978a56ebff /libbb
parent540ab7097c2932e8ef9e3bbb6abf5604c05acdde (diff)
downloadbusybox-ce13b7600277478055de0b7c38b483a76145efd2.zip
busybox-ce13b7600277478055de0b7c38b483a76145efd2.tar.gz
libbb: shrink monotonic_XXX functions, introduce monotonic_ns
(unused for now) function old new delta get_mono - 31 +31 sv_main 1228 1234 +6 expand 1693 1697 +4 get_address 178 181 +3 utoa_to_buf 108 110 +2 builtin_exit 46 48 +2 qrealloc 36 33 -3 qgravechar 109 106 -3 ash_main 1383 1380 -3 grep_file 850 846 -4 popstring 140 134 -6 monotonic_us 85 60 -25 monotonic_sec 41 16 -25 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 5/7 up/down: 48/-69) Total: -21 bytes
Diffstat (limited to 'libbb')
-rw-r--r--libbb/time.c29
1 files changed, 23 insertions, 6 deletions
diff --git a/libbb/time.c b/libbb/time.c
index 7d3ac91..850ac15 100644
--- a/libbb/time.c
+++ b/libbb/time.c
@@ -10,8 +10,8 @@
#include "libbb.h"
#if ENABLE_MONOTONIC_SYSCALL
-#include <sys/syscall.h>
+#include <sys/syscall.h>
/* Old glibc (< 2.3.4) does not provide this constant. We use syscall
* directly so this definition is safe. */
#ifndef CLOCK_MONOTONIC
@@ -20,30 +20,47 @@
/* libc has incredibly messy way of doing this,
* typically requiring -lrt. We just skip all this mess */
+static void get_mono(struct timespec *ts)
+{
+ if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, ts))
+ bb_error_msg_and_die("clock_gettime(MONOTONIC) failed");
+}
+unsigned long long FAST_FUNC monotonic_ns(void)
+{
+ struct timespec ts;
+ get_mono(&ts);
+ return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
+}
unsigned long long FAST_FUNC monotonic_us(void)
{
struct timespec ts;
- if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts))
- bb_error_msg_and_die("clock_gettime(MONOTONIC) failed");
+ get_mono(&ts);
return ts.tv_sec * 1000000ULL + ts.tv_nsec/1000;
}
unsigned FAST_FUNC monotonic_sec(void)
{
struct timespec ts;
- if (syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts))
- bb_error_msg_and_die("clock_gettime(MONOTONIC) failed");
+ get_mono(&ts);
return ts.tv_sec;
}
+
#else
+
+unsigned long long FAST_FUNC monotonic_ns(void)
+{
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
+}
unsigned long long FAST_FUNC monotonic_us(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec * 1000000ULL + tv.tv_usec;
}
-
unsigned FAST_FUNC monotonic_sec(void)
{
return time(NULL);
}
+
#endif