SIG_USR handling seems to be working
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@282 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
This commit is contained in:
stasinos
parent
8496030d8a
commit
7849f7b54e
3
C/init.c
3
C/init.c
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@ -874,6 +874,9 @@ InitCodes(void)
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AtomArrow = LookupAtom("->");
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heap_regs->atom_assert = LookupAtom(":-");
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heap_regs->atom_alarm = LookupAtom("$alarm");
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#if USE_SIGACTION
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heap_regs->atom_sig_pending = LookupAtom("$sig_pending");
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#endif
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AtomBraces = LookupAtom("{}");
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heap_regs->atom_b = LookupAtom("$last_choice_pt");
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heap_regs->atom_break = LookupAtom("$break");
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3
C/save.c
3
C/save.c
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@ -1050,6 +1050,9 @@ restore_codes(void)
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heap_regs->atom_read = AtomAdjust(heap_regs->atom_read);
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heap_regs->atom_repeat = AtomAdjust(heap_regs->atom_repeat);
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heap_regs->atom_restore_regs = AtomAdjust(heap_regs->atom_restore_regs);
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#if USE_SIGACTION
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heap_regs->atom_sig_pending = AtomAdjust(heap_regs->atom_sig_pending);
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#endif
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heap_regs->atom_stack_free = AtomAdjust(heap_regs->atom_stack_free);
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heap_regs->atom_true = AtomAdjust(heap_regs->atom_true);
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heap_regs->atom_user = AtomAdjust(heap_regs->atom_user);
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41
C/sysbits.c
41
C/sysbits.c
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@ -823,6 +823,7 @@ STATIC_PROTO (void InitSignals, (void));
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STATIC_PROTO (void HandleSIGSEGV, (int, siginfo_t *, ucontext_t *));
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STATIC_PROTO (void HandleMatherr, (int, siginfo_t *, ucontext_t *));
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STATIC_PROTO (void HandleSIGUSER, (int, siginfo_t *, ucontext_t *));
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STATIC_PROTO (void my_signal_info, (int, void (*)(int, siginfo_t *, ucontext_t *)));
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STATIC_PROTO (void my_signal, (int, void (*)(int, siginfo_t *, ucontext_t *)));
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@ -901,10 +902,11 @@ my_signal(int sig, void (*handler)(int, siginfo_t *, ucontext_t *))
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sigaction(sig,&sigact,NULL);
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}
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#else
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#else /* if not (defined(__svr4__) || defined(__SVR4)) */
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STATIC_PROTO (RETSIGTYPE HandleMatherr, (int));
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STATIC_PROTO (RETSIGTYPE HandleSIGSEGV, (int));
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STATIC_PROTO (RETSIGTYPE HandleSIGUSER, (int));
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STATIC_PROTO (void my_signal_info, (int, void (*)(int)));
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STATIC_PROTO (void my_signal, (int, void (*)(int)));
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@ -1051,7 +1053,7 @@ void (*handler)(int);
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}
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#endif /* __linux__ */
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#endif
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#endif /* (defined(__svr4__) || defined(__SVR4)) */
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static int
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@ -1251,6 +1253,37 @@ HandleALRM(int s)
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}
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#endif
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#if USE_SIGACTION
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/* this routine is called if YAP received one of the signals that
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can be handled by user code, currently SIGUSR1 and SIGUSR2 */
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static RETSIGTYPE
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#if (defined(__svr4__) || defined(__SVR4))
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HandleSIGUSER (int s, siginfo_t *x, ucontext_t *y)
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#else
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HandleSIGUSER(int s)
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#endif
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{
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/* force the system to creep */
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p_creep ();
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/* raise the '$sig_pending' flag */
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/* NOTE: shouldn't this be a queue? */
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switch (s) {
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case SIGUSR1:
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PutValue(AtomSigPending, MkAtomTerm(LookupAtom("sig_usr1")));
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break;
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case SIGUSR2:
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PutValue(AtomSigPending, MkAtomTerm(LookupAtom("sig_usr2")));
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break;
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default:
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/* should never be here, freak out and die! */
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/* YapErrorWhatever(); */
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;
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}
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}
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#endif /* USE_SIGACTION */
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/*
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* This function is called after a normal interrupt had been caught It allows
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* 6 possibilities : abort, continue, trace, debug, help, exit
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@ -1315,6 +1348,10 @@ InitSignals (void)
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#else
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my_signal (SIGINT, HandleSIGINT);
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#endif
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#if USE_SIGACTION
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my_signal (SIGUSR1, HandleSIGUSER);
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my_signal (SIGUSR2, HandleSIGUSER);
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#endif
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#ifndef MPW
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my_signal (SIGFPE, HandleMatherr);
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#endif
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12
H/Heap.h
12
H/Heap.h
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@ -10,7 +10,7 @@
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* File: Heap.h *
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* mods: *
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* comments: Heap Init Structure *
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* version: $Id: Heap.h,v 1.17 2002-01-07 06:28:03 vsc Exp $ *
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* version: $Id: Heap.h,v 1.18 2002-01-09 17:19:36 stasinos Exp $ *
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*************************************************************************/
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/* information that can be stored in Code Space */
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@ -196,6 +196,9 @@ typedef struct various_codes {
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atom_read,
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atom_repeat,
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atom_restore_regs,
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#if USE_SIGACTION
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atom_sig_pending,
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#endif
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atom_stack_free,
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atom_true,
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atom_unwritable,
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@ -350,11 +353,9 @@ typedef struct various_codes {
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#define AtomCsult heap_regs->atom_csult
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#define AtomCut heap_regs->atom_cut
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#define AtomCutBy heap_regs->atom_cut_by
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#ifdef EUROTRA
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#ifdef SFUNC
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#if defined(EUROTRA) && defined(SFUNC)
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#define AtomDollarUndef heap_regs->atom_dollar_undef
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#endif
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#endif
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#define AtomE heap_regs->atom_e
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#define AtomEQ heap_regs->atom_e_q
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#define AtomEof heap_regs->atom_eof
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@ -387,6 +388,9 @@ typedef struct various_codes {
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#define AtomRead heap_regs->atom_read
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#define AtomRepeat heap_regs->atom_repeat
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#define AtomRestoreRegs heap_regs->atom_restore_regs
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#if USE_SIGACTION
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#define AtomSigPending heap_regs->atom_sig_pending
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#endif
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#define AtomStackFree heap_regs->atom_stack_free
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#define AtomTrue heap_regs->atom_true
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#define AtomUser heap_regs->atom_user
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@ -199,4 +199,10 @@
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#define USE_GMP 1
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#endif
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/* Is fflush(NULL) clobbering input streams? */
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#undef BROKEN_FFLUSH_NULL
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/* Should we do signal handling? */
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#if HAVE_SIGNAL_H && HAVE_SIGACTION
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#define USE_SIGACTION 1
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#endif
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11
pl/boot.yap
11
pl/boot.yap
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@ -94,6 +94,17 @@ true :- true. % otherwise, $$compile will ignore this clause.
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'$enter_top_level' :-
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'$alarm'(0, _),
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fail.
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% set the default user signal handlers
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'$enter_top_level' :-
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( '$recorded'('$sig_handler',_,_) ->
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true
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;
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'$recordz'('$sig_handler',
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action(sig_usr1,(format('Received user signal 1~n',[]),halt)), _),
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'$recordz'('$sig_handler',
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action(sig_usr2,(format('Received user signal 2~n',[]),halt)), _)
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),
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fail.
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'$enter_top_level' :-
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'$clean_up_dead_clauses',
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fail.
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11
pl/debug.yap
11
pl/debug.yap
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@ -739,6 +739,17 @@ debugging :-
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true
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),
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'$execute'(M:Goal).
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'$creep'(G) :-
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'$get_value'('$sig_pending', Signal),
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\+ Signal = [], !,
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'$set_value'('$sig_pending', []),
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( '$recorded'('$sig_handler', action(Signal,A),_) ->
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'$execute'(A),
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G=[M|Goal]
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;
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true
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),
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'$execute'(M:Goal).
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'$creep'(_) :-
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'$get_value'('$throw', true), !,
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'$set_value'('$throw', false),
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@ -91,7 +91,7 @@ setof(Template, Generator, Set) :-
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% And this is bagof
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% Either we have excess of variables
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% and we need to find the solutions for each instantion
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% and we need to find the solutions for each instantiation
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% of these variables
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bagof(Template, Generator, Bag) :-
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@ -231,6 +231,13 @@ alarm(Interval, Goal, Left) :-
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'$recordz'('$alarm_handler',M:Goal,_),
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'$alarm'(Interval, Left).
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on_signal(Signal,OldAction,Action) :-
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recorded('$sig_handler', action(Signal,OldAction), Ref),
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erase(Ref),
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'$current_module'(M),
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'$recordz'('$sig_handler', action(Signal,M:Action),Ref2).
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%%% Saving and restoring a computation
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save(A) :- var(A), !,
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