Guardian Procedure Calls Reference Manual (G06.25+)

Guardian Procedure Calls (S)

Guardian Procedure Calls Reference Manual—522629-013

14-133

SIGACTION_SUPPLANT_ Procedure

Summary

Syntax for C Programmers

Syntax for TAL Programmers

Parameters

General Considerations

Handler Considerations

Example

Related Programming Manual

Summary

The SIGACTION_SUPPLANT_ procedure allows a subsystem (such as a shared run-

time library) to take over signal handling temporarily. Before exiting, the same

subsystem calls the SIGACTION_RESTORE_ restore to restore the signal-handling

state established by the process before entering the subsystem.

Syntax for C Programmers

Syntax for TAL Programmers

Parameters

error returned value

INT(32)

indicates the outcome of the call:

0D indicates a successful outcome

-1D indicates an error. The reason for the error is given in the

errno variable:

Note. This procedure can be called only from native processes.

#include <tdmsig.h>

int SIGACTION_SUPPLANT_ ( void (* handler) ( int signum

,siginfo_t *

,void * )

,sig_save_template *signal-buffer

,short length );

?SOURCE $SYSTEM.SYSTEM.HTDMSIG

error := SIGACTION_SUPPLANT_ ( handler ! i

,signal-buffer ! o

,length ); ! i