X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fbasic%2Ftime-util.c;h=2a3957d97ae2f1f2f596fac71f4979792a4faa60;hb=2ed028df72f5995acfbeca89db3f056d0e83cac1;hp=95b837a85ba9313a1cd47b39a97b145979088ea3;hpb=8b89c78c709c597c8838095ff33845ffa7b1f268;p=elogind.git
diff --git a/src/basic/time-util.c b/src/basic/time-util.c
index 95b837a85..2a3957d97 100644
--- a/src/basic/time-util.c
+++ b/src/basic/time-util.c
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
@@ -19,15 +17,32 @@
along with systemd; If not, see .
***/
-#include
+#include
+#include
+#include
#include
-#include
+#include
+#include
#include
-
-#include "util.h"
-#include "time-util.h"
+#include
+#include
+#include
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "log.h"
+#include "macro.h"
+#include "parse-util.h"
#include "path-util.h"
+#include "string-util.h"
#include "strv.h"
+#include "time-util.h"
+
+#if 0 /// UNNEEDED by elogind
+static nsec_t timespec_load_nsec(const struct timespec *ts);
+#endif // 0
usec_t now(clockid_t clock_id) {
struct timespec ts;
@@ -37,8 +52,7 @@ usec_t now(clockid_t clock_id) {
return timespec_load(&ts);
}
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
nsec_t now_nsec(clockid_t clock_id) {
struct timespec ts;
@@ -69,18 +83,12 @@ dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) {
ts->realtime = u;
delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u;
- ts->monotonic = now(CLOCK_MONOTONIC);
-
- if ((int64_t) ts->monotonic > delta)
- ts->monotonic -= delta;
- else
- ts->monotonic = 0;
+ ts->monotonic = usec_sub(now(CLOCK_MONOTONIC), delta);
return ts;
}
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) {
int64_t delta;
assert(ts);
@@ -92,12 +100,7 @@ dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) {
ts->monotonic = u;
delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u;
-
- ts->realtime = now(CLOCK_REALTIME);
- if ((int64_t) ts->realtime > delta)
- ts->realtime -= delta;
- else
- ts->realtime = 0;
+ ts->realtime = usec_sub(now(CLOCK_REALTIME), delta);
return ts;
}
@@ -109,20 +112,11 @@ dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, us
ts->realtime = ts->monotonic = USEC_INFINITY;
return ts;
}
- ts->realtime = now(CLOCK_REALTIME);
- ts->monotonic = now(CLOCK_MONOTONIC);
+ dual_timestamp_get(ts);
delta = (int64_t) now(clock_boottime_or_monotonic()) - (int64_t) u;
-
- if ((int64_t) ts->realtime > delta)
- ts->realtime -= delta;
- else
- ts->realtime = 0;
-
- if ((int64_t) ts->monotonic > delta)
- ts->monotonic -= delta;
- else
- ts->monotonic = 0;
+ ts->realtime = usec_sub(ts->realtime, delta);
+ ts->monotonic = usec_sub(ts->monotonic, delta);
return ts;
}
@@ -143,7 +137,8 @@ usec_t timespec_load(const struct timespec *ts) {
(usec_t) ts->tv_nsec / NSEC_PER_USEC;
}
-nsec_t timespec_load_nsec(const struct timespec *ts) {
+#if 0 /// UNNEEDED by elogind
+static nsec_t timespec_load_nsec(const struct timespec *ts) {
assert(ts);
if (ts->tv_sec == (time_t) -1 &&
@@ -154,6 +149,7 @@ nsec_t timespec_load_nsec(const struct timespec *ts) {
(nsec_t) ts->tv_sec * NSEC_PER_SEC +
(nsec_t) ts->tv_nsec;
}
+#endif // 0
struct timespec *timespec_store(struct timespec *ts, usec_t u) {
assert(ts);
@@ -199,9 +195,11 @@ struct timeval *timeval_store(struct timeval *tv, usec_t u) {
return tv;
}
-static char *format_timestamp_internal(char *buf, size_t l, usec_t t, bool utc) {
+static char *format_timestamp_internal(char *buf, size_t l, usec_t t,
+ bool utc, bool us) {
struct tm tm;
time_t sec;
+ int k;
assert(buf);
assert(l > 0);
@@ -210,61 +208,41 @@ static char *format_timestamp_internal(char *buf, size_t l, usec_t t, bool utc)
return NULL;
sec = (time_t) (t / USEC_PER_SEC);
+ localtime_or_gmtime_r(&sec, &tm, utc);
- if (utc)
- gmtime_r(&sec, &tm);
+ if (us)
+ k = strftime(buf, l, "%a %Y-%m-%d %H:%M:%S", &tm);
else
- localtime_r(&sec, &tm);
- if (strftime(buf, l, "%a %Y-%m-%d %H:%M:%S %Z", &tm) <= 0)
+ k = strftime(buf, l, "%a %Y-%m-%d %H:%M:%S %Z", &tm);
+
+ if (k <= 0)
return NULL;
+ if (us) {
+ snprintf(buf + strlen(buf), l - strlen(buf), ".%06llu", (unsigned long long) (t % USEC_PER_SEC));
+ if (strftime(buf + strlen(buf), l - strlen(buf), " %Z", &tm) <= 0)
+ return NULL;
+ }
return buf;
}
char *format_timestamp(char *buf, size_t l, usec_t t) {
- return format_timestamp_internal(buf, l, t, false);
+ return format_timestamp_internal(buf, l, t, false, false);
}
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
char *format_timestamp_utc(char *buf, size_t l, usec_t t) {
- return format_timestamp_internal(buf, l, t, true);
+ return format_timestamp_internal(buf, l, t, true, false);
}
#endif // 0
-static char *format_timestamp_internal_us(char *buf, size_t l, usec_t t, bool utc) {
- struct tm tm;
- time_t sec;
-
- assert(buf);
- assert(l > 0);
-
- if (t <= 0 || t == USEC_INFINITY)
- return NULL;
-
- sec = (time_t) (t / USEC_PER_SEC);
- if (utc)
- gmtime_r(&sec, &tm);
- else
- localtime_r(&sec, &tm);
-
- if (strftime(buf, l, "%a %Y-%m-%d %H:%M:%S", &tm) <= 0)
- return NULL;
- snprintf(buf + strlen(buf), l - strlen(buf), ".%06llu", (unsigned long long) (t % USEC_PER_SEC));
- if (strftime(buf + strlen(buf), l - strlen(buf), " %Z", &tm) <= 0)
- return NULL;
-
- return buf;
-}
-
char *format_timestamp_us(char *buf, size_t l, usec_t t) {
- return format_timestamp_internal_us(buf, l, t, false);
+ return format_timestamp_internal(buf, l, t, false, true);
}
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
char *format_timestamp_us_utc(char *buf, size_t l, usec_t t) {
- return format_timestamp_internal_us(buf, l, t, true);
+ return format_timestamp_internal(buf, l, t, true, true);
}
#endif // 0
@@ -441,8 +419,7 @@ char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) {
return buf;
}
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) {
assert(f);
@@ -465,7 +442,7 @@ int dual_timestamp_deserialize(const char *value, dual_timestamp *t) {
assert(t);
if (sscanf(value, "%llu %llu", &a, &b) != 2) {
- log_debug("Failed to parse finish timestamp value %s.", value);
+ log_debug("Failed to parse dual timestamp value \"%s\": %m", value);
return -EINVAL;
}
@@ -475,6 +452,18 @@ int dual_timestamp_deserialize(const char *value, dual_timestamp *t) {
return 0;
}
+int timestamp_deserialize(const char *value, usec_t *timestamp) {
+ int r;
+
+ assert(value);
+
+ r = safe_atou64(value, timestamp);
+ if (r < 0)
+ return log_debug_errno(r, "Failed to parse timestamp value \"%s\": %m", value);
+
+ return r;
+}
+
int parse_timestamp(const char *t, usec_t *usec) {
static const struct {
const char *name;
@@ -497,7 +486,7 @@ int parse_timestamp(const char *t, usec_t *usec) {
};
const char *k;
- bool utc;
+ const char *utc;
struct tm tm, copy;
time_t x;
usec_t x_usec, plus = 0, minus = 0, ret;
@@ -547,8 +536,8 @@ int parse_timestamp(const char *t, usec_t *usec) {
goto finish;
- } else if (endswith(t, " ago")) {
- t = strndupa(t, strlen(t) - strlen(" ago"));
+ } else if ((k = endswith(t, " ago"))) {
+ t = strndupa(t, k - t);
r = parse_sec(t, &minus);
if (r < 0)
@@ -556,8 +545,8 @@ int parse_timestamp(const char *t, usec_t *usec) {
goto finish;
- } else if (endswith(t, " left")) {
- t = strndupa(t, strlen(t) - strlen(" left"));
+ } else if ((k = endswith(t, " left"))) {
+ t = strndupa(t, k - t);
r = parse_sec(t, &plus);
if (r < 0)
@@ -568,7 +557,7 @@ int parse_timestamp(const char *t, usec_t *usec) {
utc = endswith_no_case(t, " UTC");
if (utc)
- t = strndupa(t, strlen(t) - strlen(" UTC"));
+ t = strndupa(t, utc - t);
x = ret / USEC_PER_SEC;
x_usec = 0;
@@ -581,12 +570,12 @@ int parse_timestamp(const char *t, usec_t *usec) {
goto from_tm;
} else if (streq(t, "yesterday")) {
- tm.tm_mday --;
+ tm.tm_mday--;
tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
goto from_tm;
} else if (streq(t, "tomorrow")) {
- tm.tm_mday ++;
+ tm.tm_mday++;
tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
goto from_tm;
}
@@ -673,29 +662,18 @@ int parse_timestamp(const char *t, usec_t *usec) {
parse_usec:
{
- char *end;
- unsigned long long val;
- size_t l;
+ unsigned add;
k++;
- if (*k < '0' || *k > '9')
+ r = parse_fractional_part_u(&k, 6, &add);
+ if (r < 0)
return -EINVAL;
- /* base 10 instead of base 0, .09 is not base 8 */
- errno = 0;
- val = strtoull(k, &end, 10);
- if (*end || errno)
+ if (*k)
return -EINVAL;
- l = end-k;
-
- /* val has l digits, make them 6 */
- for (; l < 6; l++)
- val *= 10;
- for (; l > 6; l--)
- val /= 10;
+ x_usec = add;
- x_usec = val;
}
from_tm:
@@ -721,7 +699,8 @@ finish:
}
#endif // 0
-int parse_sec(const char *t, usec_t *usec) {
+int parse_time(const char *t, usec_t *usec, usec_t default_unit) {
+
static const struct {
const char *suffix;
usec_t usec;
@@ -735,6 +714,7 @@ int parse_sec(const char *t, usec_t *usec) {
{ "min", USEC_PER_MINUTE },
{ "months", USEC_PER_MONTH },
{ "month", USEC_PER_MONTH },
+ { "M", USEC_PER_MONTH },
{ "msec", USEC_PER_MSEC },
{ "ms", USEC_PER_MSEC },
{ "m", USEC_PER_MINUTE },
@@ -753,7 +733,6 @@ int parse_sec(const char *t, usec_t *usec) {
{ "y", USEC_PER_YEAR },
{ "usec", 1ULL },
{ "us", 1ULL },
- { "", USEC_PER_SEC }, /* default is sec */
};
const char *p, *s;
@@ -762,6 +741,7 @@ int parse_sec(const char *t, usec_t *usec) {
assert(t);
assert(usec);
+ assert(default_unit > 0);
p = t;
@@ -780,6 +760,7 @@ int parse_sec(const char *t, usec_t *usec) {
long long l, z = 0;
char *e;
unsigned i, n = 0;
+ usec_t multiplier, k;
p += strspn(p, WHITESPACE);
@@ -822,21 +803,24 @@ int parse_sec(const char *t, usec_t *usec) {
for (i = 0; i < ELEMENTSOF(table); i++)
if (startswith(e, table[i].suffix)) {
- usec_t k = (usec_t) z * table[i].usec;
-
- for (; n > 0; n--)
- k /= 10;
-
- r += (usec_t) l * table[i].usec + k;
+ multiplier = table[i].usec;
p = e + strlen(table[i].suffix);
-
- something = true;
break;
}
- if (i >= ELEMENTSOF(table))
- return -EINVAL;
+ if (i >= ELEMENTSOF(table)) {
+ multiplier = default_unit;
+ p = e;
+ }
+
+ something = true;
+
+ k = (usec_t) z * multiplier;
+
+ for (; n > 0; n--)
+ k /= 10;
+ r += (usec_t) l * multiplier + k;
}
*usec = r;
@@ -844,8 +828,11 @@ int parse_sec(const char *t, usec_t *usec) {
return 0;
}
-/// UNNEEDED by elogind
-#if 0
+int parse_sec(const char *t, usec_t *usec) {
+ return parse_time(t, usec, USEC_PER_SEC);
+}
+
+#if 0 /// UNNEEDED by elogind
int parse_nsec(const char *t, nsec_t *nsec) {
static const struct {
const char *suffix;
@@ -1088,22 +1075,31 @@ bool timezone_is_valid(const char *name) {
return true;
}
-clockid_t clock_boottime_or_monotonic(void) {
- static clockid_t clock = -1;
- int fd;
-
- if (clock != -1)
- return clock;
-
- fd = timerfd_create(CLOCK_BOOTTIME, TFD_NONBLOCK|TFD_CLOEXEC);
- if (fd < 0)
- clock = CLOCK_MONOTONIC;
- else {
- safe_close(fd);
- clock = CLOCK_BOOTTIME;
+bool clock_boottime_supported(void) {
+ static int supported = -1;
+
+ /* Note that this checks whether CLOCK_BOOTTIME is available in general as well as available for timerfds()! */
+
+ if (supported < 0) {
+ int fd;
+
+ fd = timerfd_create(CLOCK_BOOTTIME, TFD_NONBLOCK|TFD_CLOEXEC);
+ if (fd < 0)
+ supported = false;
+ else {
+ safe_close(fd);
+ supported = true;
+ }
}
- return clock;
+ return supported;
+}
+
+clockid_t clock_boottime_or_monotonic(void) {
+ if (clock_boottime_supported())
+ return CLOCK_BOOTTIME;
+ else
+ return CLOCK_MONOTONIC;
}
int get_timezone(char **tz) {
@@ -1132,4 +1128,28 @@ int get_timezone(char **tz) {
*tz = z;
return 0;
}
+
+time_t mktime_or_timegm(struct tm *tm, bool utc) {
+ return utc ? timegm(tm) : mktime(tm);
+}
+#endif // 0
+
+struct tm *localtime_or_gmtime_r(const time_t *t, struct tm *tm, bool utc) {
+ return utc ? gmtime_r(t, tm) : localtime_r(t, tm);
+}
+
+#if 0 /// UNNEEDED by elogind
+unsigned long usec_to_jiffies(usec_t u) {
+ static thread_local unsigned long hz = 0;
+ long r;
+
+ if (hz == 0) {
+ r = sysconf(_SC_CLK_TCK);
+
+ assert(r > 0);
+ hz = (unsigned long) r;
+ }
+
+ return DIV_ROUND_UP(u , USEC_PER_SEC / hz);
+}
#endif // 0