9.193 SET_FOR_HEAVY_USAGE

Note: Built-In Function Rules     Usage Options

Sets a function for heavy usage mode

Arguments

No Argument Values.

Return Values

No Return Values.

Technical Notes

  • This Built-In Function allows a function to dynamically change from heavy usage to light usage (and vice-versa). For example:

          if (*jobmode = B)
             use SET_FOR_HEAVY_USAGE
          else
             use SET_FOR_LIGHT_USAGE
          endif

  • At every entry or (re)entry the heavy/light usage option is set by the calling parent process, or adopted from a *DIRECT caller, so at every invocation you should positively (re)set the usage option.

  • This Built-In Function executes very quickly and imposes little overhead.

  • Changing a "light usage" function to have a "heavy usage" capability may be more complex than simply adding a use of the SET_FOR_HEAVY_USAGE Built-In Function. Since a heavy usage function's variables and lists retain their values between invocations, more complex entry and/or exit logic may be required.

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