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exercises/compile-tcsh/tcsh-6.10.00/tc.sig.h  view on Meta::CPAN

 * code is the the part defined when BSDJOBS are defined
 * NOTE: we don't want killpg(a, b) == kill(-getpgrp(a), b)
 * cause process a might be already dead and getpgrp would fail
 */
#  define killpg(a, b) kill(-(a), (b))
# else
/* this is the poor man's version of killpg()! Just kill the
 * current process and don't worry about the rest. Someday
 * I hope I get to fix that.
 */
#  define killpg(a, b) kill((a), (b))
# endif /* BSDJOBS */
#endif /* SYSVREL > 0 */

#ifdef _MINIX
# include <signal.h>
# define killpg(a, b) kill((a), (b))
# ifdef _MINIX_VMD
#  define signal(a, b) signal((a), (a) == SIGCHLD ? SIG_IGN : (b))
# endif /* _MINIX_VMD */
#endif /* _MINIX */

#ifdef _VMS_POSIX
# define killpg(a, b) kill(-(a), (b))
#endif /* atp _VMS_POSIX */

#if !defined(NSIG) && defined(SIGMAX)
# define NSIG (SIGMAX+1)
#endif /* !NSIG && SIGMAX */
#if !defined(NSIG) && defined(_SIG_MAX)
# define NSIG (_SIG_MAX+1)
#endif /* !NSIG && _SIG_MAX */
#if !defined(NSIG) && defined(_NSIG)
# define NSIG _NSIG
#endif /* !NSIG && _NSIG */
#if !defined(MAXSIG) && defined(NSIG)
# define MAXSIG NSIG
#endif /* !MAXSIG && NSIG */

#ifdef BSDSIGS
/*
 * For 4.2bsd signals.
 */
# ifdef sigmask
#  undef sigmask
# endif /* sigmask */
# define	sigmask(s)	(1 << ((s)-1))
# ifdef POSIXSIGS
#  define 	sigpause(a)	(void) bsd_sigpause(a)
#  ifdef WINNT_NATIVE
#   undef signal
#  endif /* WINNT_NATIVE */
#  define 	signal(a, b)	bsd_signal(a, b)
# endif /* POSIXSIGS */
# ifndef _SEQUENT_
#  define	sighold(s)	sigblock(sigmask(s))
#  define	sigignore(s)	signal(s, SIG_IGN)
#  define 	sigset(s, a)	signal(s, a)
# endif /* !_SEQUENT_ */
# ifdef aiws
#  define 	sigrelse(a)	sigsetmask(sigblock(0) & ~sigmask(a))
#  undef	killpg
#  define 	killpg(a, b)	kill(-getpgrp(a), b)
#  define	NEEDsignal
# endif /* aiws */
#endif /* BSDSIGS */


/*
 * We choose a define for the window signal if it exists..
 */
#ifdef SIGWINCH
# define SIG_WINDOW SIGWINCH
#else
# ifdef SIGWINDOW
#  define SIG_WINDOW SIGWINDOW
# endif /* SIGWINDOW */
#endif /* SIGWINCH */

#ifdef convex
# ifdef notdef
/* Does not seem to work right... Christos */
#  define SIGSYNCH       0 
# endif
# ifdef SIGSYNCH
#  define SYNCHMASK 	(sigmask(SIGCHLD)|sigmask(SIGSYNCH))
# else
#  define SYNCHMASK 	(sigmask(SIGCHLD))
# endif
extern sigret_t synch_handler();
#endif /* convex */

#ifdef SAVESIGVEC
# define NSIGSAVED 7
 /*
  * These are not inline for speed. gcc -traditional -O on the sparc ignores
  * the fact that vfork() corrupts the registers. Calling a routine is not
  * nice, since it can make the compiler put some things that we want saved
  * into registers 				- christos
  */
# define savesigvec(sv)						\
   ((void) mysigvec(SIGINT,  (sigvec_t *) 0, &(sv)[0]),		\
    (void) mysigvec(SIGQUIT, (sigvec_t *) 0, &(sv)[1]),		\
    (void) mysigvec(SIGTSTP, (sigvec_t *) 0, &(sv)[2]),		\
    (void) mysigvec(SIGTTIN, (sigvec_t *) 0, &(sv)[3]),		\
    (void) mysigvec(SIGTTOU, (sigvec_t *) 0, &(sv)[4]),		\
    (void) mysigvec(SIGTERM, (sigvec_t *) 0, &(sv)[5]),		\
    (void) mysigvec(SIGHUP,  (sigvec_t *) 0, &(sv)[6]),		\
    sigblock(sigmask(SIGINT) | sigmask(SIGQUIT) | 		\
	    sigmask(SIGTSTP) | sigmask(SIGTTIN) | 		\
	    sigmask(SIGTTOU) | sigmask(SIGTERM) |		\
	    sigmask(SIGHUP)))

# define restoresigvec(sv, sm)					\
    (void) ((void) mysigvec(SIGINT,  &(sv)[0], (sigvec_t *) 0),	\
	    (void) mysigvec(SIGQUIT, &(sv)[1], (sigvec_t *) 0),	\
	    (void) mysigvec(SIGTSTP, &(sv)[2], (sigvec_t *) 0),	\
	    (void) mysigvec(SIGTTIN, &(sv)[3], (sigvec_t *) 0),	\
	    (void) mysigvec(SIGTTOU, &(sv)[4], (sigvec_t *) 0),	\
	    (void) mysigvec(SIGTERM, &(sv)[5], (sigvec_t *) 0),	\
	    (void) mysigvec(SIGHUP,  &(sv)[6], (sigvec_t *) 0),	\
	    (void) sigsetmask(sm))
# endif /* SAVESIGVEC */

#endif /* _h_tc_sig */