| handle | The atomic safety handle to return readers for. |
| maxCount | The maximum number of handles to be written to the output array. |
| output | A buffer where the job handles will be written. |
int The actual number of readers on the handle, which can be greater than the maximum count provided.
Fetch the job handles of all jobs reading from the safety handle.
This is a debugging method used to produce better error messages and is not intended to be called from user code.