The PreInit services offered under Language Environment using CEEPIPI are listed in Table 1.
| Function code | Integer value | Service performed |
|---|---|---|
| Initialization | ||
| init_main | 1 | Create and initialize an environment for multiple executions of main routines. |
| init_main_dp | 19 | Create and initialize an environment for multiple executions of main routines. |
| init_sub | 3 | Create and initialize an environment for multiple executions of subroutines. |
| init_sub_dp | 9 | Create and initialize an environment for multiple executions of subroutines. |
| Application invocation | ||
| call_main | 2 | Invoke a main routine within an already initialized environment. |
| call_sub | 4 | Invoke a subroutine within an already initialized environment. |
| start_seq | 7 | Start a sequence of uninterruptable calls to a number of subroutines. |
| call_sub_addr | 10 | Invoke a subroutine by address within an already initialized environment. |
| Termination | ||
| term | 5 | Explicitly terminate the environment without executing a user routine. |
| end_seq | 8 | Terminate a sequence of uninterruptable calls to a number of subroutines. |
| Addition of an entry to PreInit table | ||
| add_entry | 6 | Dynamically add a candidate routine to execute within the preinitialized environment. |
| Deletion of an entry from PreInit table | ||
| delete_entry | 11 | Delete an entry from the PreInit table, making it available for subsequent add_entry functions. |
| Identification of a PreInit table entry | ||
| identify_entry | 13 | Identify the programming language of an entry in the PreInit table. |
| identify_attributes | 16 | Identify the attributes of an entry in the PreInit table. |
| Identification of the environment | ||
| identify_environment | 15 | Identify the environment that was preinitialized. |
| Access to the CAA user word | ||
| set_user_word | 17 | Set value to be used to initialize CAA user word. |
| get_user_word | 18 | Get value to be used to initialize CAA user word. |