Metadata: add env fields to ease life of viewer

[lttng-tools.git] / src / common / time.h

diff --git a/src/common/time.h b/src/common/time.h
index bb0991de68f19f8667c3e2f10f8cac60cf78b474..7e760599fd54ba6c2f0f8c2e400b5c4e00f1e0d1 100644 (file)
--- a/src/common/time.h
+++ b/src/common/time.h
@@ -21,6 +21,7 @@
 
 #include <time.h>
 #include <stdbool.h>
+#include <common/macros.h>
 
 #define MSEC_PER_SEC    1000ULL
 #define NSEC_PER_SEC    1000000000ULL
@@ -35,6 +36,7 @@
 #define USEC_PER_MINUTE (USEC_PER_SEC * SEC_PER_MINUTE)
 #define USEC_PER_HOURS  (USEC_PER_MINUTE * MINUTE_PER_HOUR)
 
+LTTNG_HIDDEN
 bool locale_supports_utf8(void);
 
 #define NSEC_UNIT       "ns"
@@ -44,17 +46,28 @@ bool locale_supports_utf8(void);
 #define MIN_UNIT        "m"
 #define HR_UNIT         "h"
 
+#define ISO8601_FORMAT  "%Y%m%dT%H%M%S%z"
+#define ISO8601_LEN     21
+
 /*
  * timespec_to_ms: Convert timespec to milliseconds.
  *
  * Returns 0 on success, else -1 on error. errno is set to EOVERFLOW if
  * input would overflow the output in milliseconds.
  */
+LTTNG_HIDDEN
 int timespec_to_ms(struct timespec ts, unsigned long *ms);
 
 /*
  * timespec_abs_diff: Absolute difference between timespec.
  */
+LTTNG_HIDDEN
 struct timespec timespec_abs_diff(struct timespec ts_a, struct timespec ts_b);
 
+/*
+ * Format time_t to ISO8601 compatible format.
+ */
+LTTNG_HIDDEN
+int time_t_to_ISO8601(char *s, size_t s_size, time_t time);
+
 #endif /* LTTNG_TIME_H */