Signal Handling--ref

The return value is0on success and-1on failure. The followingerrnoerror condition is defined for this function:

EINVAL

Thesignumargument doesn't specify a valid signal.

intsigdelset(sigset_t *set,intsignum)

This function removes the signalsignumfrom the signal setset. Allsigdelsetdoes is modifyset; it does not block or unblock any signals. The return value and error conditions are the same as forsigaddset.

intsigismember(const sigset_t *set,intsignum)

Thesigismemberfunction tests whether the signalsignumis a member of the signal setset. It returns1if the signal is in the set,0if not,and-1if there is an error.

（编辑：成都站长网）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!