X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=man%2Fsd_journal_get_cutoff_realtime_usec.xml;h=673cff45910307b8714334c8e695b37fad018d0c;hb=75e52a16f9ef476f1d18ec6d9c84e00149b80d03;hp=6df4b26e6fe0e2758d802a860ea02b019835cac5;hpb=3b3d7d069d10d53336dbada1c67f739e3492b218;p=elogind.git
diff --git a/man/sd_journal_get_cutoff_realtime_usec.xml b/man/sd_journal_get_cutoff_realtime_usec.xml
index 6df4b26e6..673cff459 100644
--- a/man/sd_journal_get_cutoff_realtime_usec.xml
+++ b/man/sd_journal_get_cutoff_realtime_usec.xml
@@ -74,25 +74,29 @@
Description
sd_journal_get_cutoff_realtime_usec()
- gets the realtime (wallclock) timestamps of the first
- and last entries accessible in the journal. It takes
- three arguments: the journal context object and two
- pointers to 64-bit unsigned integers to store the
- timestamps in. The timestamps are in microseconds
- since the epoch,
+ retrieves the realtime (wallclock) timestamps of the
+ first and last entries accessible in the journal. It
+ takes three arguments: the journal context object
+ j and two pointers
+ from and
+ to pointing at 64-bit unsigned
+ integers to store the timestamps in. The timestamps
+ are in microseconds since the epoch,
i.e. CLOCK_REALTIME. Either one
of the two timestamp arguments may be passed as
NULL in case the timestamp is not
needed, but not both.
sd_journal_get_cutoff_monotonic_usec()
- gets the monotonic timestamps of the first and last
- entries accessible in the journal. It takes three
- arguments: the journal context object, a 128-bit
- identifier for the boot, and two pointers to 64-bit
- unsigned integers to store the timestamps. The
- timestamps are in microseconds since boot-up of the
- specific boot,
+ retrieves the monotonic timestamps of the first and
+ last entries accessible in the journal. It takes three
+ arguments: the journal context object
+ j, a 128-bit identifier for the
+ boot boot_id, and two pointers
+ to 64-bit unsigned integers to store the timestamps,
+ from and
+ to. The timestamps are in
+ microseconds since boot-up of the specific boot,
i.e. CLOCK_MONOTONIC. Since the
monotonic clock begins new with every reboot it only
defines a well-defined point in time when used
@@ -113,6 +117,12 @@
sd_journal_get_cutoff_monotonic_usec()
return 1 on success, 0 if not suitable entries are in
the journal or a negative errno-style error code.
+
+ Locations pointed to by parameters
+ from and
+ to will be set only if the
+ return value is positive, and obviously, the
+ parameters are non-null.
@@ -124,7 +134,7 @@
sd_journal_get_cutoff_monotonic_usec()
interfaces are available as a shared library, which can
be compiled and linked to with the
- libsystemd pkg-config1
+ libsystemd pkg-config1
file.