File: libguestfs_log.stp

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#! /usr/bin/env stap

global start_time, prev;

function display_time () {
  now = gettimeofday_us ()
  delta = (prev > 0 ) ? now - prev : 0
  printf ("%18d (+%10d): ", now - start_time, delta)
  prev = now
}

probe begin {
  start_time = gettimeofday_us ()
  prev = 0
  printf ("%-18s (+%10s): %s\n", "# time_usec",
          "delta usec", "event")
}

probe process("/usr/lib*/libguestfs.so.0*").mark("*")
{
  display_time()
  printf ("%s\n", $$name)
}