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29 * @(#)signalvar.h 8.6 (Berkeley) 2/19/95
30 * $FreeBSD: src/sys/sys/signalvar.h,v 1.34.2.1 2000/05/16 06:58:05 dillon Exp $
31 * $DragonFly: src/sys/sys/signal2.h,v 1.3 2008/10/14 21:25:14 swildner Exp $
34 #ifndef _SYS_SIGNAL2_H
35 #define _SYS_SIGNAL2_H
43 * Determine which signals are pending for a lwp.
45 * (Does not need to be interlocked with lwp_spin. If caller holds a
46 * critical section races will be resolved through an AST).
48 static __inline sigset_t
49 lwp_sigpend(struct lwp
*lp
)
53 set
= lp
->lwp_proc
->p_siglist
;
54 SIGSETOR(set
, lp
->lwp_siglist
);
59 * Mark a signal as handled by the lwp.
61 * (p->p_token must be held, lp->lwp_spin must be held)
64 lwp_delsig(struct lwp
*lp
, int sig
)
66 SIGDELSET(lp
->lwp_siglist
, sig
);
67 SIGDELSET(lp
->lwp_proc
->p_siglist
, sig
);
70 #define CURSIG(lp) __cursig(lp, 1, 0)
71 #define CURSIG_TRACE(lp) __cursig(lp, 1, 1)
72 #define CURSIG_NOBLOCK(lp) __cursig(lp, 0, 0)
75 * Determine signal that should be delivered to process p, the current
76 * process, 0 if none. If there is a pending stop signal with default
77 * action, the process stops in issignal().
79 * This function does not interlock pending signals. If the caller needs
80 * to interlock the caller must acquire the per-proc token.
86 __cursig(struct lwp
*lp
, int mayblock
, int maytrace
)
88 struct proc
*p
= lp
->lwp_proc
;
92 tmpset
= lwp_sigpend(lp
);
93 SIGSETNAND(tmpset
, lp
->lwp_sigmask
);
95 /* Nothing interesting happening? */
96 if (SIGISEMPTY(tmpset
)) {
100 * b) somebody is tracing us.
102 if (!(mayblock
&& (p
->p_flags
& P_TRACED
)))
107 r
= issignal(lp
, maytrace
);
109 r
= TRUE
; /* simply state the fact */