[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.31 by root, Sun Aug 26 16:36:08 2001 UTC vs.
Revision 1.52 by pcg, Sun Nov 30 22:49:25 2003 UTC

…		…
1	#include "EXTERN.h"	1	#include "EXTERN.h"
2	#include "perl.h"	2	#include "perl.h"
3	#include "XSUB.h"	3	#include "XSUB.h"
4		4
		5	#include "patchlevel.h"
		6
		7	#if PATCHLEVEL < 6
		8	# ifndef PL_ppaddr
		9	# define PL_ppaddr ppaddr
		10	# endif
		11	# ifndef call_sv
		12	# define call_sv perl_call_sv
		13	# endif
		14	# ifndef get_sv
		15	# define get_sv perl_get_sv
		16	# endif
		17	# ifndef get_cv
		18	# define get_cv perl_get_cv
		19	# endif
		20	# ifndef IS_PADGV
		21	# define IS_PADGV(v) 0
		22	# endif
		23	# ifndef IS_PADCONST
		24	# define IS_PADCONST(v) 0
		25	# endif
		26	#endif
		27
5	#include "libcoro/coro.c"	28	#include "libcoro/coro.c"
6		29
7	#include <signal.h>	30	#include <signal.h>
8		31
9	#ifdef HAVE_MMAP	32	#ifdef HAVE_MMAP
10	# include <unistd.h>	33	# include <unistd.h>
11	# include <sys/mman.h>	34	# include <sys/mman.h>
12	# ifndef MAP_ANON
13	# ifdef MAP_ANONYMOUS	35	# ifndef MAP_ANONYMOUS
14	# define MAP_ANON MAP_ANONYMOUS	36	# ifdef MAP_ANON
		37	# define MAP_ANONYMOUS MAP_ANON
15	# else	38	# else
16	# undef HAVE_MMAP	39	# undef HAVE_MMAP
17	# endif	40	# endif
18	# endif	41	# endif
19	#endif	42	#endif
20		43
21	#define MAY_FLUSH /* increases codesize and is rarely used */
22
23	#define SUB_INIT "Coro::State::initialize"	44	#define SUB_INIT "Coro::State::initialize"
24	#define UCORO_STATE "_coro_state"	45	#define UCORO_STATE "_coro_state"
25		46
26	/* The next macro should declare a variable stacklevel that contains and approximation	47	/* The next macro should declare a variable stacklevel that contains and approximation
27	* to the current C stack pointer. Its property is that it changes with each call	48	* to the current C stack pointer. Its property is that it changes with each call
28	* and should be unique. */	49	* and should be unique. */
29	#define dSTACKLEVEL void *stacklevel = &stacklevel	50	#define dSTACKLEVEL void *stacklevel = &stacklevel
		51
		52	#define IN_DESTRUCT (PL_main_cv == Nullcv)
30		53
31	#define labs(l) ((l) >= 0 ? (l) : -(l))	54	#define labs(l) ((l) >= 0 ? (l) : -(l))
32		55
33	#include "CoroAPI.h"	56	#include "CoroAPI.h"
34		57
45	void *sptr;	68	void *sptr;
46	long ssize; /* positive == mmap, otherwise malloc */	69	long ssize; /* positive == mmap, otherwise malloc */
47	} coro_stack;	70	} coro_stack;
48		71
49	struct coro {	72	struct coro {
		73	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		74	JMPENV start_env;
		75
50	/* the optional C context */	76	/* the optional C context */
51	coro_stack *stack;	77	coro_stack *stack;
52	void *cursp;	78	void *cursp;
53	int gencnt;	79	int gencnt;
54		80
…		…
66	AV *curstack;	92	AV *curstack;
67	AV *mainstack;	93	AV *mainstack;
68	SV **stack_sp;	94	SV **stack_sp;
69	OP *op;	95	OP *op;
70	SV **curpad;	96	SV **curpad;
		97	AV *comppad;
71	SV **stack_base;	98	SV **stack_base;
72	SV **stack_max;	99	SV **stack_max;
73	SV **tmps_stack;	100	SV **tmps_stack;
74	I32 tmps_floor;	101	I32 tmps_floor;
75	I32 tmps_ix;	102	I32 tmps_ix;
…		…
99	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
100	static HV *coro_state_stash;	127	static HV *coro_state_stash;
101	static SV *ucoro_state_sv;	128	static SV *ucoro_state_sv;
102	static U32 ucoro_state_hash;	129	static U32 ucoro_state_hash;
103	static HV *padlist_cache;	130	static HV *padlist_cache;
		131	static SV coro_mortal; / will be freed after next transfer */
104		132
105	/* mostly copied from op.c:cv_clone2 */	133	/* mostly copied from op.c:cv_clone2 */
106	STATIC AV *	134	STATIC AV *
107	clone_padlist (AV *protopadlist)	135	clone_padlist (AV *protopadlist)
108	{	136	{
…		…
154	sv = (SV *) newAV ();	182	sv = (SV *) newAV ();
155	else if (*name == '%')	183	else if (*name == '%')
156	sv = (SV *) newHV ();	184	sv = (SV *) newHV ();
157	else	185	else
158	sv = NEWSV (0, 0);	186	sv = NEWSV (0, 0);
		187	#ifdef SvPADBUSY
159	if (!SvPADBUSY (sv))	188	if (!SvPADBUSY (sv))
		189	#endif
160	SvPADMY_on (sv);	190	SvPADMY_on (sv);
161	npad[ix] = sv;	191	npad[ix] = sv;
162	}	192	}
163	}	193	}
164	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	194	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
…		…
194	#endif	224	#endif
195		225
196	return newpadlist;	226	return newpadlist;
197	}	227	}
198		228
199	#ifdef MAY_FLUSH
200	STATIC void	229	STATIC void
201	free_padlist (AV *padlist)	230	free_padlist (AV *padlist)
202	{	231	{
203	/* may be during global destruction */	232	/* may be during global destruction */
204	if (SvREFCNT(padlist))	233	if (SvREFCNT (padlist))
205	{	234	{
206	I32 i = AvFILLp(padlist);	235	I32 i = AvFILLp (padlist);
207	while (i >= 0)	236	while (i >= 0)
208	{	237	{
209	SV **svp = av_fetch(padlist, i--, FALSE);	238	SV **svp = av_fetch (padlist, i--, FALSE);
210	SV sv = svp ? svp : Nullsv;
211	if (sv)	239	if (svp)
		240	{
		241	SV *sv;
		242	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
212	SvREFCNT_dec(sv);	243	SvREFCNT_dec (sv);
		244
		245	SvREFCNT_dec (*svp);
		246	}
213	}	247	}
214		248
215	SvREFCNT_dec((SV*)padlist);	249	SvREFCNT_dec ((SV*)padlist);
216	}	250	}
217	}	251	}
218	#endif	252
		253	STATIC int
		254	coro_cv_free (SV sv, MAGIC mg)
		255	{
		256	AV *padlist;
		257	AV av = (AV )mg->mg_obj;
		258
		259	/* casting is fun. */
		260	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		261	free_padlist (padlist);
		262	}
		263
		264	#define PERL_MAGIC_coro PERL_MAGIC_ext
		265
		266	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
219		267
220	/* the next two functions merely cache the padlists */	268	/* the next two functions merely cache the padlists */
221	STATIC void	269	STATIC void
222	get_padlist (CV *cv)	270	get_padlist (CV *cv)
223	{	271	{
224	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	272	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
225		273
226	if (he && AvFILLp ((AV )he) >= 0)	274	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
227	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	275	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
228	else	276	else
229	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	277	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
230	}	278	}
231		279
232	STATIC void	280	STATIC void
233	put_padlist (CV *cv)	281	put_padlist (CV *cv)
234	{	282	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	283	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
236		284
237	if (SvTYPE (*he) != SVt_PVAV)	285	if (!mg)
238	{	286	{
239	SvREFCNT_dec (*he);	287	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		288	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		289	mg->mg_virtual = &vtbl_coro;
240	he = (SV )newAV ();	290	mg->mg_obj = (SV *)newAV ();
241	}	291	}
242		292
243	av_push ((AV )he, (SV *)CvPADLIST (cv));	293	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
244	}	294	}
245
246	#ifdef MAY_FLUSH
247	STATIC void
248	flush_padlist_cache ()
249	{
250	HV *hv = padlist_cache;
251	padlist_cache = newHV ();
252
253	if (hv_iterinit (hv))
254	{
255	HE *he;
256	AV *padlist;
257
258	while (!!(he = hv_iternext (hv)))
259	{
260	AV av = (AV )HeVAL(he);
261
262	/* casting is fun. */
263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
264	free_padlist (padlist);
265	}
266	}
267
268	SvREFCNT_dec (hv);
269	}
270	#endif
271		295
272	#define SB do {	296	#define SB do {
273	#define SE } while (0)	297	#define SE } while (0)
274		298
275	#define LOAD(state) load_state(aTHX_ (state));	299	#define LOAD(state) load_state(aTHX_ (state));
276	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	300	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277		301
278	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	302	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
279		303
280	static void	304	static void
281	load_state(pTHX_ Coro__State c)	305	load_state(pTHX_ Coro__State c)
282	{	306	{
283	PL_dowarn = c->dowarn;	307	PL_dowarn = c->dowarn;
…		…
287	PL_curstack = c->curstack;	311	PL_curstack = c->curstack;
288	PL_mainstack = c->mainstack;	312	PL_mainstack = c->mainstack;
289	PL_stack_sp = c->stack_sp;	313	PL_stack_sp = c->stack_sp;
290	PL_op = c->op;	314	PL_op = c->op;
291	PL_curpad = c->curpad;	315	PL_curpad = c->curpad;
		316	PL_comppad = c->comppad;
292	PL_stack_base = c->stack_base;	317	PL_stack_base = c->stack_base;
293	PL_stack_max = c->stack_max;	318	PL_stack_max = c->stack_max;
294	PL_tmps_stack = c->tmps_stack;	319	PL_tmps_stack = c->tmps_stack;
295	PL_tmps_floor = c->tmps_floor;	320	PL_tmps_floor = c->tmps_floor;
296	PL_tmps_ix = c->tmps_ix;	321	PL_tmps_ix = c->tmps_ix;
…		…
384	PUSHs ((SV *)cv);	409	PUSHs ((SV *)cv);
385		410
386	get_padlist (cv); /* this is a monster */	411	get_padlist (cv); /* this is a monster */
387	}	412	}
388	}	413	}
		414	#ifdef CXt_FORMAT
389	else if (CxTYPE(cx) == CXt_FORMAT)	415	else if (CxTYPE(cx) == CXt_FORMAT)
390	{	416	{
391	/* I never used formats, so how should I know how these are implemented? */	417	/* I never used formats, so how should I know how these are implemented? */
392	/* my bold guess is as a simple, plain sub... */	418	/* my bold guess is as a simple, plain sub... */
393	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	419	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394	}	420	}
		421	#endif
395	}	422	}
396		423
397	if (top_si->si_type == PERLSI_MAIN)	424	if (top_si->si_type == PERLSI_MAIN)
398	break;	425	break;
399		426
…		…
416	c->curstack = PL_curstack;	443	c->curstack = PL_curstack;
417	c->mainstack = PL_mainstack;	444	c->mainstack = PL_mainstack;
418	c->stack_sp = PL_stack_sp;	445	c->stack_sp = PL_stack_sp;
419	c->op = PL_op;	446	c->op = PL_op;
420	c->curpad = PL_curpad;	447	c->curpad = PL_curpad;
		448	c->comppad = PL_comppad;
421	c->stack_base = PL_stack_base;	449	c->stack_base = PL_stack_base;
422	c->stack_max = PL_stack_max;	450	c->stack_max = PL_stack_max;
423	c->tmps_stack = PL_tmps_stack;	451	c->tmps_stack = PL_tmps_stack;
424	c->tmps_floor = PL_tmps_floor;	452	c->tmps_floor = PL_tmps_floor;
425	c->tmps_ix = PL_tmps_ix;	453	c->tmps_ix = PL_tmps_ix;
…		…
441	}	469	}
442		470
443	/*	471	/*
444	* allocate various perl stacks. This is an exact copy	472	* allocate various perl stacks. This is an exact copy
445	* of perl.c:init_stacks, except that it uses less memory	473	* of perl.c:init_stacks, except that it uses less memory
446	* on the assumption that coroutines do not usually need	474	* on the (sometimes correct) assumption that coroutines do
447	* a lot of stackspace.	475	* not usually need a lot of stackspace.
448	*/	476	*/
449	STATIC void	477	STATIC void
450	coro_init_stacks (pTHX)	478	coro_init_stacks (pTHX)
451	{	479	{
452	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	480	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
465		493
466	New(54,PL_markstack,16,I32);	494	New(54,PL_markstack,16,I32);
467	PL_markstack_ptr = PL_markstack;	495	PL_markstack_ptr = PL_markstack;
468	PL_markstack_max = PL_markstack + 16;	496	PL_markstack_max = PL_markstack + 16;
469		497
		498	#ifdef SET_MARK_OFFSET
470	SET_MARK_OFFSET;	499	SET_MARK_OFFSET;
		500	#endif
471		501
472	New(54,PL_scopestack,16,I32);	502	New(54,PL_scopestack,16,I32);
473	PL_scopestack_ix = 0;	503	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	504	PL_scopestack_max = 16;
475		505
…		…
482	PL_retstack_max = 8;	512	PL_retstack_max = 8;
483	}	513	}
484		514
485	/*	515	/*
486	* destroy the stacks, the callchain etc...	516	* destroy the stacks, the callchain etc...
487	* still there is a memleak of 128 bytes...
488	*/	517	*/
489	STATIC void	518	STATIC void
490	destroy_stacks(pTHX)	519	destroy_stacks(pTHX)
491	{	520	{
492	int destruct = PL_main_cv != Nullcv;	521	if (!IN_DESTRUCT)
493
494	if (destruct)
495	{	522	{
496	/* is this ugly, I ask? */	523	/* is this ugly, I ask? */
497	while (PL_scopestack_ix)	524	LEAVE_SCOPE (0);
498	LEAVE;
499		525
500	/* sure it is, but more important: is it correct?? :/ */	526	/* sure it is, but more important: is it correct?? :/ */
501	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
502	FREETMPS;	527	FREETMPS;
503	}	528	}
504		529
505	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
506	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
507		532
…		…
513	dSP;	538	dSP;
514	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	539	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
515	PUTBACK; /* possibly superfluous */	540	PUTBACK; /* possibly superfluous */
516	}	541	}
517		542
518	if (destruct)	543	if (!IN_DESTRUCT)
519	{	544	{
520	dounwind(-1);	545	dounwind(-1);
521	SvREFCNT_dec(PL_curstackinfo->si_stack);	546	SvREFCNT_dec(PL_curstackinfo->si_stack);
522	}	547	}
523		548
…		…
543	stack->refcnt = 1;	568	stack->refcnt = 1;
544	stack->usecnt = 1;	569	stack->usecnt = 1;
545	stack->gencnt = ctx->gencnt = 0;	570	stack->gencnt = ctx->gencnt = 0;
546	if (alloc)	571	if (alloc)
547	{	572	{
548	#ifdef HAVE_MMAP	573	#if HAVE_MMAP
549	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	574	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	575	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
551	if (stack->sptr == (void *)-1)	576	if (stack->sptr == (void *)-1)
552	#endif	577	#endif
553	{	578	{
554	/FIXME//D//* reasonable stack size! */	579	/FIXME//D//* reasonable stack size! */
555	stack->ssize = -4096 * sizeof (long);	580	stack->ssize = - (16384 * sizeof (long));
556	New (0, stack->sptr, 4096, long);	581	New (0, stack->sptr, 16384, long);
557	}	582	}
558	}	583	}
559	else	584	else
560	stack->sptr = 0;	585	stack->sptr = 0;
561		586
…		…
575	{	600	{
576	#ifdef HAVE_MMAP	601	#ifdef HAVE_MMAP
577	if (stack->ssize > 0 && stack->sptr)	602	if (stack->ssize > 0 && stack->sptr)
578	munmap (stack->sptr, stack->ssize);	603	munmap (stack->sptr, stack->ssize);
579	else	604	else
580	#else	605	#endif
581	Safefree (stack->sptr);	606	Safefree (stack->sptr);
582	#endif	607
583	Safefree (stack);	608	Safefree (stack);
584	}	609	}
585	else if (ctx->gencnt == stack->gencnt)	610	else if (ctx->gencnt == stack->gencnt)
586	--stack->usecnt;	611	--stack->usecnt;
587	}	612	}
…		…
593	/*	618	/*
594	* emulate part of the perl startup here.	619	* emulate part of the perl startup here.
595	*/	620	*/
596	dSP;	621	dSP;
597	Coro__State ctx = (Coro__State)arg;	622	Coro__State ctx = (Coro__State)arg;
598	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	623	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
599		624
600	coro_init_stacks (aTHX);	625	coro_init_stacks (aTHX);
601	/PL_curcop = 0;/	626	/PL_curcop = 0;/
602	/PL_in_eval = PL_in_eval;/ /* inherit */	627	/PL_in_eval = PL_in_eval;/ /* inherit */
603	SvREFCNT_dec (GvAV (PL_defgv));	628	SvREFCNT_dec (GvAV (PL_defgv));
604	GvAV (PL_defgv) = ctx->args;	629	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
605		630
606	SPAGAIN;	631	SPAGAIN;
607		632
608	if (ctx->stack)	633	if (ctx->stack)
609	{	634	{
…		…
636	* that doesn't matter, though, since it is only	661	* that doesn't matter, though, since it is only
637	* pp_nextstate and we never return...	662	* pp_nextstate and we never return...
638	* ah yes, and I don't care anyways ;)	663	* ah yes, and I don't care anyways ;)
639	*/	664	*/
640	PUTBACK;	665	PUTBACK;
641	PL_op = pp_entersub();	666	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
642	SPAGAIN;	667	SPAGAIN;
643		668
644	ENTER; /* necessary e.g. for dounwind */	669	ENTER; /* necessary e.g. for dounwind */
645	}	670	}
646	}	671	}
…		…
650	{	675	{
651	/*	676	/*
652	* this is a _very_ stripped down perl interpreter ;)	677	* this is a _very_ stripped down perl interpreter ;)
653	*/	678	*/
654	Coro__State ctx = (Coro__State)arg;	679	Coro__State ctx = (Coro__State)arg;
		680	JMPENV coro_start_env;
655		681
656	/FIXME//* must set up top_env here */	682	PL_top_env = &ctx->start_env;
		683
657	ctx->cursp = 0;	684	ctx->cursp = 0;
658	PL_op = PL_op->op_next;	685	PL_op = PL_op->op_next;
659	CALLRUNOPS(aTHX);	686	CALLRUNOPS(aTHX);
660		687
661	abort ();	688	abort ();
…		…
718	if (!prev->stack)	745	if (!prev->stack)
719	allocate_stack (prev, 0);	746	allocate_stack (prev, 0);
720		747
721	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	748	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
722	{	749	{
		750	PL_top_env = &next->start_env;
		751
723	setup_coro (next);	752	setup_coro (next);
724		753
725	prev->stack->refcnt++;	754	prev->stack->refcnt++;
726	prev->stack->usecnt++;	755	prev->stack->usecnt++;
727	next->stack = prev->stack;	756	next->stack = prev->stack;
728	next->gencnt = prev->gencnt;	757	next->gencnt = prev->gencnt;
729	}	758	}
730	else	759	else
731	{	760	{
		761	assert (!next->stack);
732	allocate_stack (next, 1);	762	allocate_stack (next, 1);
733	coro_create (&(next->stack->cctx),	763	coro_create (&(next->stack->cctx),
734	setup_coro, (void *)next,	764	setup_coro, (void *)next,
735	next->stack->sptr, labs (next->stack->ssize));	765	next->stack->sptr, labs (next->stack->ssize));
736	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	766	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
…		…
738	}	768	}
739	}	769	}
740	else	770	else
741	setup_coro (next);	771	setup_coro (next);
742	}	772	}
		773
		774	/*
		775	* xnext is now either prev or next, depending on wether
		776	* we switched the c stack or not. that's why I use a global
		777	* variable, that should become thread-specific at one point.
		778	*/
		779	xnext->cursp = stacklevel;
743	}	780	}
744		781
745	/*	782	if (coro_mortal)
746	* xnext is now either prev or next, depending on wether
747	* we switched the c stack or not. that's why i use a global
748	* variable, that should become thread-specific at one point.
749	*/
750	xnext->cursp = stacklevel;
751	}
752
753	static struct coro *
754	sv_to_coro (SV arg, const char funcname, const char *varname)
755	{
756	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
757	{	783	{
758	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	784	SvREFCNT_dec (coro_mortal);
759		785	coro_mortal = 0;
760	if (!he)
761	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
762
763	arg = HeVAL(he);
764	}	786	}
765		787	}
		788
		789	#define SV_CORO(sv,func) \
		790	do { \
		791	if (SvROK (sv)) \
		792	sv = SvRV (sv); \
		793	\
		794	if (SvTYPE(sv) == SVt_PVHV) \
		795	{ \
		796	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		797	\
		798	if (!he) \
		799	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		800	\
		801	(sv) = SvRV (HeVAL(he)); \
		802	} \
		803	\
766	/* must also be changed inside Coro::Cont::yield */	804	/* must also be changed inside Coro::Cont::yield */ \
767	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	805	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
768	return (struct coro ) SvIV((SV)SvRV(arg));
769
770	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	806	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
771	/NORETURN/	807	\
772	}	808	} while(0)
		809
		810	#define SvSTATE(sv) (struct coro *)SvIV (sv)
773		811
774	static void	812	static void
775	api_transfer(pTHX_ SV prev, SV next, int flags)	813	api_transfer(pTHX_ SV prev, SV next, int flags)
776	{	814	{
777	transfer(aTHX_	815	SV_CORO (prev, "Coro::transfer");
778	sv_to_coro (prev, "Coro::transfer", "prev"),	816	SV_CORO (next, "Coro::transfer");
779	sv_to_coro (next, "Coro::transfer", "next"),	817
780	flags);	818	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
781	}	819	}
782		820
783	/ Coro ******************************************************************/	821	/ Coro ******************************************************************/
784		822
785	#define PRIO_MAX 3	823	#define PRIO_MAX 3
…		…
795	static int coro_nready;	833	static int coro_nready;
796		834
797	static void	835	static void
798	coro_enq (SV *sv)	836	coro_enq (SV *sv)
799	{	837	{
800	if (SvROK (sv))	838	if (SvTYPE (sv) == SVt_PVHV)
801	{	839	{
802	SV *hv = SvRV (sv);
803	if (SvTYPE (hv) == SVt_PVHV)
804	{
805	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);	840	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
806	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;	841	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
807		842
808	prio = prio > PRIO_MAX ? PRIO_MAX	843	prio = prio > PRIO_MAX ? PRIO_MAX
809	: prio < PRIO_MIN ? PRIO_MIN	844	: prio < PRIO_MIN ? PRIO_MIN
810	: prio;	845	: prio;
811		846
812	av_push (coro_ready [prio - PRIO_MIN], sv);	847	av_push (coro_ready [prio - PRIO_MIN], sv);
813	coro_nready++;	848	coro_nready++;
814		849
815	return;	850	return;
816	}
817	}	851	}
818		852
819	croak ("Coro::ready tried to enqueue something that is not a coroutine");	853	croak ("Coro::ready tried to enqueue something that is not a coroutine");
820	}	854	}
821		855
…		…
839	}	873	}
840		874
841	static void	875	static void
842	api_ready (SV *coro)	876	api_ready (SV *coro)
843	{	877	{
		878	if (SvROK (coro))
		879	coro = SvRV (coro);
		880
844	coro_enq (SvREFCNT_inc (coro));	881	coro_enq (SvREFCNT_inc (coro));
845	}	882	}
846		883
847	static void	884	static void
848	api_schedule (int cede)	885	api_schedule (void)
849	{	886	{
850	SV prev, next;	887	SV prev, next;
851		888
852	prev = GvSV (coro_current);	889	prev = SvRV (GvSV (coro_current));
853
854	if (cede)
855	coro_enq (SvREFCNT_inc (prev));
856
857	next = coro_deq (PRIO_MIN);	890	next = coro_deq (PRIO_MIN);
858		891
859	if (!next)	892	if (!next)
860	next = SvREFCNT_inc (GvSV (coro_idle));	893	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
861		894
862	GvSV (coro_current) = SvREFCNT_inc (next);	895	/* free this only after the transfer */
863	transfer (aTHX_	896	coro_mortal = prev;
864	sv_to_coro (prev, "Coro::schedule", "current coroutine"),	897	SV_CORO (prev, "Coro::schedule");
865	sv_to_coro (next, "Coro::schedule", "next coroutine"),	898
		899	SvRV (GvSV (coro_current)) = next;
		900
		901	SV_CORO (next, "Coro::schedule");
		902
		903	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
866	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	904	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
867	SvREFCNT_dec (next);	905	}
868	SvREFCNT_dec (prev);	906
		907	static void
		908	api_cede (void)
		909	{
		910	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		911
		912	api_schedule ();
869	}	913	}
870		914
871	MODULE = Coro::State PACKAGE = Coro::State	915	MODULE = Coro::State PACKAGE = Coro::State
872		916
873	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
…		…
900	Coro__State coro;	944	Coro__State coro;
901		945
902	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	946	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
903	croak ("Coro::State::_newprocess expects an arrayref");	947	croak ("Coro::State::_newprocess expects an arrayref");
904		948
905	New (0, coro, 1, struct coro);	949	Newz (0, coro, 1, struct coro);
906		950
907	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	951	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
908	coro->mainstack = 0; /* actual work is done inside transfer */	952	coro->mainstack = 0; /* actual work is done inside transfer */
909	coro->stack = 0;	953	coro->stack = 0;
910		954
		955	/* same as JMPENV_BOOTSTRAP */
		956	/* we might be able to recycle start_env, but safe is safe */
		957	//Zero(&coro->start_env, 1, JMPENV);
		958	coro->start_env.je_ret = -1;
		959	coro->start_env.je_mustcatch = TRUE;
		960
911	RETVAL = coro;	961	RETVAL = coro;
912	OUTPUT:	962	OUTPUT:
913	RETVAL	963	RETVAL
914		964
915	void	965	void
916	transfer(prev, next, flags)	966	transfer(prev, next, flags)
917	Coro::State_or_hashref prev	967	SV *prev
918	Coro::State_or_hashref next	968	SV *next
919	int flags	969	int flags
920	PROTOTYPE: @	970	PROTOTYPE: @
921	CODE:	971	CODE:
922	PUTBACK;	972	PUTBACK;
		973	SV_CORO (next, "Coro::transfer");
		974	SV_CORO (prev, "Coro::transfer");
923	transfer (aTHX_ prev, next, flags);	975	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
924	SPAGAIN;	976	SPAGAIN;
925		977
926	void	978	void
927	DESTROY(coro)	979	DESTROY(coro)
928	Coro::State coro	980	Coro::State coro
…		…
944		996
945	coro->mainstack = 0;	997	coro->mainstack = 0;
946	}	998	}
947		999
948	deallocate_stack (coro);	1000	deallocate_stack (coro);
949		1001	SvREFCNT_dec (coro->args);
950	Safefree (coro);	1002	Safefree (coro);
951
952	void
953	flush()
954	CODE:
955	#ifdef MAY_FLUSH
956	flush_padlist_cache ();
957	#endif
958		1003
959	void	1004	void
960	_exit(code)	1005	_exit(code)
961	int code	1006	int code
962	PROTOTYPE: $	1007	PROTOTYPE: $
963	CODE:	1008	CODE:
964	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
965	_exit (code);	1009	_exit (code);
966	#else
967	signal (SIGTERM, SIG_DFL);
968	raise (SIGTERM);
969	exit (code);
970	#endif
971		1010
972	MODULE = Coro::State PACKAGE = Coro::Cont	1011	MODULE = Coro::State PACKAGE = Coro::Cont
973		1012
974	# this is slightly dirty (should expose a c-level api)	1013	# this is slightly dirty (should expose a c-level api)
975		1014
…		…
981	SV *sv;	1020	SV *sv;
982	AV *defav = GvAV (PL_defgv);	1021	AV *defav = GvAV (PL_defgv);
983	struct coro prev, next;	1022	struct coro prev, next;
984		1023
985	if (!returnstk)	1024	if (!returnstk)
986	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1025	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
987		1026
988	/* set up @_ -- ugly */	1027	/* set up @_ -- ugly */
989	av_clear (defav);	1028	av_clear (defav);
990	av_fill (defav, items - 1);	1029	av_fill (defav, items - 1);
991	while (items--)	1030	while (items--)
…		…
1023		1062
1024	{	1063	{
1025	SV *sv = perl_get_sv("Coro::API", 1);	1064	SV *sv = perl_get_sv("Coro::API", 1);
1026		1065
1027	coroapi.schedule = api_schedule;	1066	coroapi.schedule = api_schedule;
		1067	coroapi.cede = api_cede;
1028	coroapi.ready = api_ready;	1068	coroapi.ready = api_ready;
1029	coroapi.nready = &coro_nready;	1069	coroapi.nready = &coro_nready;
1030	coroapi.current = coro_current;	1070	coroapi.current = coro_current;
1031		1071
1032	GCoroAPI = &coroapi;	1072	GCoroAPI = &coroapi;
1033	sv_setiv(sv, (IV)&coroapi);	1073	sv_setiv(sv, (IV)&coroapi);
1034	SvREADONLY_on(sv);	1074	SvREADONLY_on(sv);
1035	}	1075	}
1036	}	1076	}
1037		1077
		1078	#if !PERL_MICRO
		1079
1038	void	1080	void
1039	ready(self)	1081	ready(self)
1040	SV * self	1082	SV * self
		1083	PROTOTYPE: $
1041	CODE:	1084	CODE:
1042	api_ready (self);	1085	api_ready (self);
		1086
		1087	#endif
1043		1088
1044	int	1089	int
1045	nready(...)	1090	nready(...)
1046	PROTOTYPE:	1091	PROTOTYPE:
1047	CODE:	1092	CODE:
…		…
1050	RETVAL	1095	RETVAL
1051		1096
1052	void	1097	void
1053	schedule(...)	1098	schedule(...)
1054	PROTOTYPE:	1099	PROTOTYPE:
1055	ALIAS:
1056	cede = 1
1057	CODE:	1100	CODE:
1058	api_schedule (ix);	1101	api_schedule ();
1059		1102
		1103	void
		1104	cede(...)
		1105	PROTOTYPE:
		1106	CODE:
		1107	api_cede ();
		1108

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Comparing Coro/Coro/State.xs (file contents): Revision 1.31 by root, Sun Aug 26 16:36:08 2001 UTC vs. Revision 1.52 by pcg, Sun Nov 30 22:49:25 2003 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.31 by root, Sun Aug 26 16:36:08 2001 UTC vs.
Revision 1.52 by pcg, Sun Nov 30 22:49:25 2003 UTC