signal.h Global variables in P.I.P.S. Open_Environment

Interface status:

externallyDefinedApi

IMPORT_C int sigaction(int sig, const struct sigaction *act, struct sigaction *oact);

Description

The sigaction(int,const struct sigaction *,struct sigaction *)sigaction(int,const struct sigaction *,struct sigaction *) function allows the calling process to examine and/or specify the action to be associated with a specific signal. The argument sig specifies the signal; acceptable values are defined in siganl.h.

Examples:

/* Illustrates how to use sigaction API */
# 22 "d:/EPOC/release/9.4/common/generic/openenv/core/include/signal.dosc" 2
int main()
    {
    int ret=0;
    ret = sigaction( 2 ,NULL,NULL);
    if(ret==0)
        {
        printf("sigaction() is success");
        return 0;
        }
    else
        {
        printf("sigaction() failed");
        return -1;
        }
    }

Output:
sigaction() is success

Parameters

`int sig`
`const struct sigactionsigaction *act`
`struct sigactionsigaction *oact`

Return value

int

Upon successful completion, sigaction(int,const struct sigaction *,struct sigaction *)sigaction(int,const struct sigaction *,struct sigaction *) shall return 0; otherwise, -1 shall be returned, errno shall be set to indicate the error, and no new signal-catching function shall be installed.

Interface status:

externallyDefinedApi

IMPORT_C int sigemptyset(sigset_t *set);

Description

The sigemptyset(sigset_t *)sigemptyset(sigset_t *) function initialises the signal set pointed to by set, such that all signals defined in this document are excluded.

Examples:

/* Illustrates how to use sigemptyset API */
int main()
    {
    int ret=0;
    sigset_t sigset;
    ret=sigemptyset(&sigset);
    if(ret==0)
        {
        printf("sigemptyset success");
        return 0;
        }
    else
        {
        printf("sigemptyset failed");
        return -1;
        }
    }

Output:
sigemptyset success

Parameters


                                 				__sigset *set

Return value

int

Upon successful completion, sigemptyset(sigset_t *)sigemptyset(sigset_t *) returns 0. Otherwise, it returns -1 and sets errno to indicate the error.

`sigaction(int,const struct sigaction ,struct sigaction )`

Description

Parameters

Return value

`sigemptyset(sigset_t *)`

Description

Parameters

Return value

signal.h Global variables