tools/dtrace/custom.d

   1 /*
   2  * custom rubinius probe.
   3  *
   4  * This script prints the parameters passed to an arbitrary custom probe
   5  * within rubinius. arg0 and arg1 are the parameters passed to Dtrace.fire().
   6  * custom probes are useful to enable/disable other probes within scripts
   7  * or just to pass arbitrary data through to dtrace.
   8  *
   9  * Example invocation:
  10  *
  11  * $> sudo dtrace -s entry-counts.d -c 'rbx custom.rb'
  12  *
  13  * Example script:
  14  *
  15  * $> cat custom.rb
  16  * Dtrace.fire 'hello', 'world'
  17  */
  18
  19 #pragma D option quiet
  20
  21 rubinius$target:::ruby-probe
  22 {
  23         printf("%s:%s\n", copyinstr(arg0), copyinstr(arg1));
  24 }
  25