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   <type name="itimer_kind">
   5     <enum>
   6       <label name="ITIMER_REAL" value="0"> <description>decrements in real time,
   7       and delivers SIGALRM upon expiration.</description>
   8       <label name="ITIMER_VIRTUAL" value="1"> <description>decrements only when the
   9       process is executing, and delivers SIGVTALRM upon expiration.</description>
  10       <label name="ITIMER_PROF" value="2"> <description>decrements both when the
  11       process executes and when the system is executing on behalf of the
  12       process. Coupled with ITIMER_VIRTUAL, this timer is usually used to
  13       profile the time spent by the application in user and kernel space.
  14       SIGPROF is delivered upon expiration.</description>
  15     </enum>
  16   </type>
  17
  18   <event name="expired">
  19     <description>A timer or itimer has expired.</description>
  20     <field name="pid">
  21                         <description>PID of the process to wake up.</description>
  22                         <uint size="4">
  23                 </field>
  24   </event>
  25
  26   <event name="softirq">
  27     <description>The timer softirq is currently runned.</description>
  28   </event>
  29
  30   <event name="set_itimer">
  31     <description>An interval timer is set.</description>
  32     <field name="which"> <description>kind of interval timer.</description>
  33             <typeref name="itimer_kind">
  34                 </field>
  35     <field name="interval_seconds"><uint size="4"></field>
  36     <field name="interval_microseconds"><uint size="4"></field>
  37     <field name="value_seconds"><uint size="4"></field>
  38     <field name="value_microseconds"><uint size="4"></field>
  39   </event>
  40
  41 </facility>