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9.193 SET_FOR_HEAVY_USAGE
| Note |
|---|
| 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
...
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.