Technical Reference: Communications, Volume 1

G32WRITE Function

Purpose

Sends a message to an API application running simultaneously on the local system.

The G32WRITE function sends a message to an API application. The maximum number of bytes that may be transferred is specified by the value returned in register zero (R0) after a successful completion of the G32ALLOC function.

The G32 WRITE function is a HCON API function that can be called by a 370 Assembler applications program.

Parameters

MSG	Gives the address of the message to be sent. It may be: *Label* A label on a DC or DS statement declaring the message. *0(reg)* A register containing the address of the message.
LEN	Specifies the length, in bytes, of the message. It is a full word, whose contents cannot exceed the value returned by the G32ALLOC function in R0. It must be: *Label* The address of a full word containing the length of the message.

Return Values

The G32WRITE function sets register 0 to the following values:

0	Indicates a normal return; call successful.
< 0	Less than 0. Indicates a host API error condition.

Examples

The following 370 Assembler code example illustrates the use of the host G32WRITE function:

L R11,=v(G32DATA)
USING G32DATAD,R11
G32WRITE MSG1, LEN1      /* write "Hello" to AIX */
LTR R0,R0                /* check return code    */
BE WRITEOK               /* if good, go to write */
( error code )
.
.
.
MSG1 DC  C 'HELLO'
LEN1 DC  AL4(*-MSG1)

Implementation Specifics

The G32WRITE function is part of the Host Connection Program (HCON).

The G32WRITE function requires one or more adapters used to connect to a mainframe host.