NAME

       sd_journal_get_cutoff_realtime_usec, sd_journal_get_cutoff_monotonic_usec - Read cut-off timestamps from
       the current journal entry

SYNOPSIS

       #include <systemd/sd-journal.h>

       int sd_journal_get_cutoff_realtime_usec(sd_journal* j, uint64_t* from, uint64_t* to);

       int sd_journal_get_cutoff_monotonic_usec(sd_journal* j, sd_id128_t boot_id, uint64_t* from,
                                                uint64_t* to);

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, 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, i.e. CLOCK_MONOTONIC. Since the monotonic clock begins
       new with every reboot it only defines a well-defined point in time when used together with an identifier
       identifying the boot, see sd_id128_get_boot(3) for more information. The function will return the
       timestamps for the boot identified by the passed boot ID. Either one of the two timestamp arguments may
       be passed as NULL in case the timestamp is not needed, but not both.

RETURN VALUE

       sd_journal_get_cutoff_realtime_usec() and 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.

NOTES

       The sd_journal_get_cutoff_realtime_usec() and sd_journal_get_cutoff_monotonic_usec() interfaces are
       available as shared library, which can be compiled and linked to with the libsystemd-journalpkg-config(1)
       file.

SEE ALSO

       systemd(1), sd-journal(3), sd_journal_open(3), sd_journal_get_realtime_usec(3), sd_id128_get_boot(3),
       clock_gettime(2)