Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 214 insertions, 0 deletions

diff --git a/lib/monotime.h b/lib/monotime.h
new file mode 100644
index 0000000..89616c5
--- /dev/null
+++ b/lib/monotime.h
@@ -0,0 +1,214 @@
+/*
+ * Copyright (c) 2017  David Lamparter, for NetDEF, Inc.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _FRR_MONOTIME_H
+#define _FRR_MONOTIME_H
+
+#include <stdint.h>
+#include <time.h>
+#include <sys/time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct fbuf;
+struct printfrr_eargs;
+
+#ifndef TIMESPEC_TO_TIMEVAL
+/* should be in sys/time.h on BSD & Linux libcs */
+#define TIMESPEC_TO_TIMEVAL(tv, ts)                                            \
+	do {                                                                   \
+		(tv)->tv_sec = (ts)->tv_sec;                                   \
+		(tv)->tv_usec = (ts)->tv_nsec / 1000;                          \
+	} while (0)
+#endif
+#ifndef TIMEVAL_TO_TIMESPEC
+/* should be in sys/time.h on BSD & Linux libcs */
+#define TIMEVAL_TO_TIMESPEC(tv, ts)                                            \
+	do {                                                                   \
+		(ts)->tv_sec = (tv)->tv_sec;                                   \
+		(ts)->tv_nsec = (tv)->tv_usec * 1000;                          \
+	} while (0)
+#endif
+
+/* Linux/glibc is sadly missing these timespec helpers */
+#ifndef timespecadd
+#define timespecadd(tsp, usp, vsp)                                             \
+	do {                                                                   \
+		(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;                 \
+		(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;              \
+		if ((vsp)->tv_nsec >= 1000000000L) {                           \
+			(vsp)->tv_sec++;                                       \
+			(vsp)->tv_nsec -= 1000000000L;                         \
+		}                                                              \
+	} while (0)
+#endif
+
+#ifndef timespecsub
+#define timespecsub(tsp, usp, vsp)                                             \
+	do {                                                                   \
+		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;                 \
+		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;              \
+		if ((vsp)->tv_nsec < 0) {                                      \
+			(vsp)->tv_sec--;                                       \
+			(vsp)->tv_nsec += 1000000000L;                         \
+		}                                                              \
+	} while (0)
+#endif
+
+static inline time_t monotime(struct timeval *tvo)
+{
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	if (tvo) {
+		TIMESPEC_TO_TIMEVAL(tvo, &ts);
+	}
+	return ts.tv_sec;
+}
+
+#define ONE_DAY_SECOND (60 * 60 * 24)
+#define ONE_WEEK_SECOND (ONE_DAY_SECOND * 7)
+#define ONE_YEAR_SECOND (ONE_DAY_SECOND * 365)
+
+/* the following two return microseconds, not time_t!
+ *
+ * also, they're negative forms of each other, but having both makes the
+ * code more readable
+ */
+static inline int64_t monotime_since(const struct timeval *ref,
+				     struct timeval *out)
+{
+	struct timeval tv;
+	monotime(&tv);
+	timersub(&tv, ref, &tv);
+	if (out)
+		*out = tv;
+	return (int64_t)tv.tv_sec * 1000000LL + tv.tv_usec;
+}
+
+static inline int64_t monotime_until(const struct timeval *ref,
+				     struct timeval *out)
+{
+	struct timeval tv;
+	monotime(&tv);
+	timersub(ref, &tv, &tv);
+	if (out)
+		*out = tv;
+	return (int64_t)tv.tv_sec * 1000000LL + tv.tv_usec;
+}
+
+static inline time_t monotime_to_realtime(const struct timeval *mono,
+					  struct timeval *realout)
+{
+	struct timeval delta, real;
+
+	monotime_since(mono, &delta);
+	gettimeofday(&real, NULL);
+
+	timersub(&real, &delta, &real);
+	if (realout)
+		*realout = real;
+	return real.tv_sec;
+}
+
+/* Char buffer size for time-to-string api */
+#define MONOTIME_STRLEN 32
+
+static inline char *time_to_string(time_t ts, char *buf)
+{
+	struct timeval tv;
+	time_t tbuf;
+
+	monotime(&tv);
+	tbuf = time(NULL) - (tv.tv_sec - ts);
+
+	return ctime_r(&tbuf, buf);
+}
+
+/* Convert interval to human-friendly string, used in cli output e.g. */
+static inline const char *frrtime_to_interval(time_t t, char *buf,
+					      size_t buflen)
+{
+	struct tm tm;
+
+	gmtime_r(&t, &tm);
+
+	if (t < ONE_DAY_SECOND)
+		snprintf(buf, buflen, "%02d:%02d:%02d", tm.tm_hour, tm.tm_min,
+			 tm.tm_sec);
+	else if (t < ONE_WEEK_SECOND)
+		snprintf(buf, buflen, "%dd%02dh%02dm", tm.tm_yday, tm.tm_hour,
+			 tm.tm_min);
+	else
+		snprintf(buf, buflen, "%02dw%dd%02dh", tm.tm_yday / 7,
+			 tm.tm_yday - ((tm.tm_yday / 7) * 7), tm.tm_hour);
+	return buf;
+}
+
+enum {
+	/* n/a - input was seconds precision, don't print any fractional */
+	TIMEFMT_SECONDS = (1 << 0),
+	/* caller is directly invoking printfrr_time and has pre-specified
+	 * I/Iu/Is/M/Mu/Ms/R/Ru/Rs (for printing timers)
+	 */
+	TIMEFMT_PRESELECT = (1 << 1),
+	/* don't print any output - this is needed for invoking printfrr_time
+	 * from another printfrr extensions to skip over flag characters
+	 */
+	TIMEFMT_SKIP = (1 << 2),
+	/* use spaces in appropriate places */
+	TIMEFMT_SPACE = (1 << 3),
+
+	/* input interpretations: */
+	TIMEFMT_REALTIME = (1 << 8),
+	TIMEFMT_MONOTONIC = (1 << 9),
+	TIMEFMT_SINCE = (1 << 10),
+	TIMEFMT_UNTIL = (1 << 11),
+
+	TIMEFMT_ABSOLUTE = TIMEFMT_REALTIME | TIMEFMT_MONOTONIC,
+	TIMEFMT_ANCHORS = TIMEFMT_SINCE | TIMEFMT_UNTIL,
+
+	/* calendaric formats: */
+	TIMEFMT_ISO8601 = (1 << 16),
+
+	/* interval formats: */
+	/* 't' - use [t]raditional 3-block format */
+	TIMEFMT_BASIC = (1 << 24),
+	/* 'm' - select mm:ss */
+	TIMEFMT_MMSS = (1 << 25),
+	/* 'h' - select hh:mm:ss */
+	TIMEFMT_HHMMSS = (1 << 26),
+	/* 'd' - print as decimal number of seconds */
+	TIMEFMT_DECIMAL = (1 << 27),
+	/* 'mx'/'hx' - replace zero value with "--:--" or "--:--:--" */
+	TIMEFMT_DASHES = (1 << 31),
+
+	/* helpers for reference */
+	TIMEFMT_TIMER_DEADLINE =
+		TIMEFMT_PRESELECT | TIMEFMT_MONOTONIC | TIMEFMT_UNTIL,
+	TIMEFMT_TIMER_INTERVAL = TIMEFMT_PRESELECT,
+};
+
+extern ssize_t printfrr_time(struct fbuf *buf, struct printfrr_eargs *ea,
+			     const struct timespec *ts, unsigned int flags);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _FRR_MONOTIME_H */