ltt/branches/poly/facilities/timer.xml

   1 <facility name=timer>
   2   <description>The timer facility has events related to timer events in the kernel.</description>
   3
   4   <event name=expired>
   5     <description>A timer or itimer has expired.</description>
   6     <field name="pid"> <description>PID of the process to wake up.</description> <uint size=4/> </field>
   7   </event>
   8
   9   <event name=softirq>
  10     <description>The timer softirq is currently runned.</description>
  11   </event>
  12
  13   <event name=set_itimer>
  14     <description>An interval timer is set.</description>
  15     <field name="which"> <description>kind of interval timer.</description>
  16             <typeref name=itimer_kind/></field>
  17     <field name="interval_seconds"><uint size=4/></field>
  18     <field name="interval_microseconds"><uint size=4/></field>
  19     <field name="value_seconds"><uint size=4/></field>
  20     <field name="value_microseconds"><uint size=4/></field>
  21   </event>
  22
  23   <type name=itimer_kind>
  24     <enum>
  25       <label name=ITIMER_REAL value=0/> <description>decrements in real time,
  26       and delivers SIGALRM upon expiration.</description>
  27       <label name=ITIMER_VIRTUAL value=1/> <description>decrements only when the
  28       process is executing, and delivers SIGVTALRM upon expiration.</description>
  29       <label name=ITIMER_PROF value=2/> <description>decrements both when the
  30       process executes and when the system is executing on behalf of the
  31       process. Coupled with ITIMER_VIRTUAL, this timer is usually used to
  32       profile the time spent by the application in user and kernel space.
  33       SIGPROF is delivered upon expiration.</description>
  34     </enum>
  35   </type>
  36
  37 </facility>