PLIST (C only)

Derivation: Parameter LIST

PLIST specifies the format of the invocation parameters your C application receives when you invoke it. Although the CICS®, CMS, IMS™, MVS™, and TSO suboptions of PLIST are supported for compatibility, you should use the HOST or OS suboptions of PLIST. Before using this runtime option, you should review the following restrictions:

This option does not apply to non-C languages and can be specified only with the C #pragma runopts directive.
You cannot set this option at the system level, region level, or in the CEEBXITA assembler user exit interface.

The default value for non-CICS applications is PLIST(HOST).

PLIST is ignored under CICS.


Syntax

             .-HOST-.      
>>-PLIST--(--+-CICS-+--)---------------------------------------><
             +-CMS--+      
             +-IMS--+      
             +-MVS--+      
             +-OS---+      
             '-TSO--'

HOST

The parameter list is a character string. The string is located differently under various systems, as follows:

CMS: If invoked by OSRUN, use the string presented in an MVS-like format located by the pointer held in R1. If not invoked by OSRUN, use the CMS extended parameter list.
TSO: If a command processor parameter list (CPPL) is detected, get the string from the command buffer. If a CPPL is not detected, assume a halfword-prefixed string in the MVS format.
MVS: Use the halfword-prefixed string.

CICS

The parameter list received by your C application is assumed to be in a CICS format.

CMS

The parameter list received by your C application is assumed to be in a CMS extended parameter list format.

IMS

The parameter list received by your C application is assumed to be in an IMS format.

MVS

The parameter list received by your C application is assumed to be in an MVS format.

OS

The parameter list received by your C application is assumed to be in an OS style.

TSO

The parameter list received by your C application is assumed to be in a CPPL format.

Usage notes

The behavior of C applications with PLIST(HOST) in effect is the same for C++.
When using the pre-Language Environment-conforming C interface for preinitialization, it is necessary to specify PLIST(MVS) in order to flag preinitialized routines.
IMS considerations—If your C application runs under IMS, the suboption of PLIST that you specify depends on the version of the C compiler you used. If you compiled your application with Version 2.1 (or earlier) of the C compiler, specify the PLIST(IMS) suboption. If your C++ application runs under IMS, you should specify the z/OS XL C++ compiler option PLIST(OS).
z/OS UNIX consideration—The PLIST option applies only to the main routine of the initial thread.