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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.24 by root, Tue Aug 14 14:56:22 2001 UTC vs.
Revision 1.49 by pcg, Sun Nov 23 03:34:13 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 */	44	#define MAY_FLUSH /* increases codesize and is rarely used */
22		45
23	#define SUB_INIT "Coro::State::initialize"	46	#define SUB_INIT "Coro::State::initialize"
24	#define UCORO_STATE "_coro_state"	47	#define UCORO_STATE "_coro_state"
25		48
26	/* The next macro should delcare a variable stacklevel that contains and approximation	49	/* 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	50	* to the current C stack pointer. Its property is that it changes with each call
28	* and should be unique. */	51	* and should be unique. */
29	#define dSTACKLEVEL void *stacklevel = &stacklevel	52	#define dSTACKLEVEL void *stacklevel = &stacklevel
		53
		54	#define IN_DESTRUCT (PL_main_cv == Nullcv)
30		55
31	#define labs(l) ((l) >= 0 ? (l) : -(l))	56	#define labs(l) ((l) >= 0 ? (l) : -(l))
32		57
33	#include "CoroAPI.h"	58	#include "CoroAPI.h"
34		59
45	void *sptr;	70	void *sptr;
46	long ssize; /* positive == mmap, otherwise malloc */	71	long ssize; /* positive == mmap, otherwise malloc */
47	} coro_stack;	72	} coro_stack;
48		73
49	struct coro {	74	struct coro {
		75	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		76	JMPENV start_env;
		77
50	/* the optional C context */	78	/* the optional C context */
51	coro_stack *stack;	79	coro_stack *stack;
52	void *cursp;	80	void *cursp;
53	int gencnt;	81	int gencnt;
54		82
…		…
66	AV *curstack;	94	AV *curstack;
67	AV *mainstack;	95	AV *mainstack;
68	SV **stack_sp;	96	SV **stack_sp;
69	OP *op;	97	OP *op;
70	SV **curpad;	98	SV **curpad;
		99	AV *comppad;
71	SV **stack_base;	100	SV **stack_base;
72	SV **stack_max;	101	SV **stack_max;
73	SV **tmps_stack;	102	SV **tmps_stack;
74	I32 tmps_floor;	103	I32 tmps_floor;
75	I32 tmps_ix;	104	I32 tmps_ix;
…		…
99	static AV main_mainstack; / used to differentiate between $main and others */	128	static AV main_mainstack; / used to differentiate between $main and others */
100	static HV *coro_state_stash;	129	static HV *coro_state_stash;
101	static SV *ucoro_state_sv;	130	static SV *ucoro_state_sv;
102	static U32 ucoro_state_hash;	131	static U32 ucoro_state_hash;
103	static HV *padlist_cache;	132	static HV *padlist_cache;
		133	static SV coro_mortal; / will be freed after next transfer */
104		134
105	/* mostly copied from op.c:cv_clone2 */	135	/* mostly copied from op.c:cv_clone2 */
106	STATIC AV *	136	STATIC AV *
107	clone_padlist (AV *protopadlist)	137	clone_padlist (AV *protopadlist)
108	{	138	{
…		…
154	sv = (SV *) newAV ();	184	sv = (SV *) newAV ();
155	else if (*name == '%')	185	else if (*name == '%')
156	sv = (SV *) newHV ();	186	sv = (SV *) newHV ();
157	else	187	else
158	sv = NEWSV (0, 0);	188	sv = NEWSV (0, 0);
		189	#ifdef SvPADBUSY
159	if (!SvPADBUSY (sv))	190	if (!SvPADBUSY (sv))
		191	#endif
160	SvPADMY_on (sv);	192	SvPADMY_on (sv);
161	npad[ix] = sv;	193	npad[ix] = sv;
162	}	194	}
163	}	195	}
164	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	196	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
…		…
195		227
196	return newpadlist;	228	return newpadlist;
197	}	229	}
198		230
199	#ifdef MAY_FLUSH	231	#ifdef MAY_FLUSH
200	STATIC AV *	232	STATIC void
201	free_padlist (AV *padlist)	233	free_padlist (AV *padlist)
202	{	234	{
203	/* may be during global destruction */	235	/* may be during global destruction */
204	if (SvREFCNT(padlist))	236	if (SvREFCNT(padlist))
205	{	237	{
…		…
270	#endif	302	#endif
271		303
272	#define SB do {	304	#define SB do {
273	#define SE } while (0)	305	#define SE } while (0)
274		306
275	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	307	#define LOAD(state) load_state(aTHX_ (state));
276	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	308	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277		309
278	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
279		311
280	static void	312	static void
281	load_state(pTHX_ Coro__State c)	313	load_state(pTHX_ Coro__State c)
282	{	314	{
283	PL_dowarn = c->dowarn;	315	PL_dowarn = c->dowarn;
…		…
287	PL_curstack = c->curstack;	319	PL_curstack = c->curstack;
288	PL_mainstack = c->mainstack;	320	PL_mainstack = c->mainstack;
289	PL_stack_sp = c->stack_sp;	321	PL_stack_sp = c->stack_sp;
290	PL_op = c->op;	322	PL_op = c->op;
291	PL_curpad = c->curpad;	323	PL_curpad = c->curpad;
		324	PL_comppad = c->comppad;
292	PL_stack_base = c->stack_base;	325	PL_stack_base = c->stack_base;
293	PL_stack_max = c->stack_max;	326	PL_stack_max = c->stack_max;
294	PL_tmps_stack = c->tmps_stack;	327	PL_tmps_stack = c->tmps_stack;
295	PL_tmps_floor = c->tmps_floor;	328	PL_tmps_floor = c->tmps_floor;
296	PL_tmps_ix = c->tmps_ix;	329	PL_tmps_ix = c->tmps_ix;
…		…
355		388
356	PUSHs (Nullsv);	389	PUSHs (Nullsv);
357	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
358	for (;;)	391	for (;;)
359	{	392	{
360	do	393	while (cxix >= 0)
361	{	394	{
362	PERL_CONTEXT *cx = &ccstk[cxix--];	395	PERL_CONTEXT *cx = &ccstk[cxix--];
363		396
364	if (CxTYPE(cx) == CXt_SUB)	397	if (CxTYPE(cx) == CXt_SUB)
365	{	398	{
…		…
384	PUSHs ((SV *)cv);	417	PUSHs ((SV *)cv);
385		418
386	get_padlist (cv); /* this is a monster */	419	get_padlist (cv); /* this is a monster */
387	}	420	}
388	}	421	}
		422	#ifdef CXt_FORMAT
389	else if (CxTYPE(cx) == CXt_FORMAT)	423	else if (CxTYPE(cx) == CXt_FORMAT)
390	{	424	{
391	/* I never used formats, so how should I know how these are implemented? */	425	/* I never used formats, so how should I know how these are implemented? */
392	/* my bold guess is as a simple, plain sub... */	426	/* my bold guess is as a simple, plain sub... */
393	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	427	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394	}	428	}
		429	#endif
395	}	430	}
396	while (cxix >= 0);
397		431
398	if (top_si->si_type == PERLSI_MAIN)	432	if (top_si->si_type == PERLSI_MAIN)
399	break;	433	break;
400		434
401	top_si = top_si->si_prev;	435	top_si = top_si->si_prev;
…		…
407	}	441	}
408		442
409	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	443	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
410	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	444	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
411	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	445	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
412
413	/* I have not the slightest idea of why av_reify is necessary */
414	/* but if it's missing the defav contents magically get replaced sometimes */
415	if (c->defav)
416	av_reify (c->defav);
417		446
418	c->dowarn = PL_dowarn;	447	c->dowarn = PL_dowarn;
419	c->in_eval = PL_in_eval;	448	c->in_eval = PL_in_eval;
420		449
421	c->curstackinfo = PL_curstackinfo;	450	c->curstackinfo = PL_curstackinfo;
422	c->curstack = PL_curstack;	451	c->curstack = PL_curstack;
423	c->mainstack = PL_mainstack;	452	c->mainstack = PL_mainstack;
424	c->stack_sp = PL_stack_sp;	453	c->stack_sp = PL_stack_sp;
425	c->op = PL_op;	454	c->op = PL_op;
426	c->curpad = PL_curpad;	455	c->curpad = PL_curpad;
		456	c->comppad = PL_comppad;
427	c->stack_base = PL_stack_base;	457	c->stack_base = PL_stack_base;
428	c->stack_max = PL_stack_max;	458	c->stack_max = PL_stack_max;
429	c->tmps_stack = PL_tmps_stack;	459	c->tmps_stack = PL_tmps_stack;
430	c->tmps_floor = PL_tmps_floor;	460	c->tmps_floor = PL_tmps_floor;
431	c->tmps_ix = PL_tmps_ix;	461	c->tmps_ix = PL_tmps_ix;
…		…
471		501
472	New(54,PL_markstack,16,I32);	502	New(54,PL_markstack,16,I32);
473	PL_markstack_ptr = PL_markstack;	503	PL_markstack_ptr = PL_markstack;
474	PL_markstack_max = PL_markstack + 16;	504	PL_markstack_max = PL_markstack + 16;
475		505
		506	#ifdef SET_MARK_OFFSET
476	SET_MARK_OFFSET;	507	SET_MARK_OFFSET;
		508	#endif
477		509
478	New(54,PL_scopestack,16,I32);	510	New(54,PL_scopestack,16,I32);
479	PL_scopestack_ix = 0;	511	PL_scopestack_ix = 0;
480	PL_scopestack_max = 16;	512	PL_scopestack_max = 16;
481		513
…		…
488	PL_retstack_max = 8;	520	PL_retstack_max = 8;
489	}	521	}
490		522
491	/*	523	/*
492	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
493	* still there is a memleak of 128 bytes...
494	*/	525	*/
495	STATIC void	526	STATIC void
496	destroy_stacks(pTHX)	527	destroy_stacks(pTHX)
497	{	528	{
		529	if (!IN_DESTRUCT)
		530	{
498	/* is this ugly, I ask? */	531	/* is this ugly, I ask? */
499	while (PL_scopestack_ix)	532	while (PL_scopestack_ix)
500	LEAVE;	533	LEAVE;
501		534
502	/* sure it is, but more important: is it correct?? :/ */	535	/* sure it is, but more important: is it correct?? :/ */
503	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */	536	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
504	FREETMPS;	537	FREETMPS;
		538	}
505		539
506	while (PL_curstackinfo->si_next)	540	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	541	PL_curstackinfo = PL_curstackinfo->si_next;
508		542
509	while (PL_curstackinfo)	543	while (PL_curstackinfo)
…		…
514	dSP;	548	dSP;
515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	549	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516	PUTBACK; /* possibly superfluous */	550	PUTBACK; /* possibly superfluous */
517	}	551	}
518		552
519	if (PL_main_cv != Nullcv) /* don't during destruction. hack? */	553	if (!IN_DESTRUCT)
		554	{
520	dounwind(-1);	555	dounwind(-1);
521
522	SvREFCNT_dec(PL_curstackinfo->si_stack);	556	SvREFCNT_dec(PL_curstackinfo->si_stack);
		557	}
		558
523	Safefree(PL_curstackinfo->si_cxstack);	559	Safefree(PL_curstackinfo->si_cxstack);
524	Safefree(PL_curstackinfo);	560	Safefree(PL_curstackinfo);
525	PL_curstackinfo = p;	561	PL_curstackinfo = p;
526	}	562	}
527		563
…		…
542	stack->refcnt = 1;	578	stack->refcnt = 1;
543	stack->usecnt = 1;	579	stack->usecnt = 1;
544	stack->gencnt = ctx->gencnt = 0;	580	stack->gencnt = ctx->gencnt = 0;
545	if (alloc)	581	if (alloc)
546	{	582	{
547	#ifdef HAVE_MMAP	583	#if HAVE_MMAP
548	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	584	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
549	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	585	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
550	if (stack->sptr == (void *)-1)	586	if (stack->sptr == (void *)-1)
551	#endif	587	#endif
552	{	588	{
553	/FIXME//D//* reasonable stack size! */	589	/FIXME//D//* reasonable stack size! */
554	stack->ssize = -4096 * sizeof (long);	590	stack->ssize = -4096 * sizeof (long);
…		…
574	{	610	{
575	#ifdef HAVE_MMAP	611	#ifdef HAVE_MMAP
576	if (stack->ssize > 0 && stack->sptr)	612	if (stack->ssize > 0 && stack->sptr)
577	munmap (stack->sptr, stack->ssize);	613	munmap (stack->sptr, stack->ssize);
578	else	614	else
579	#else	615	#endif
580	Safefree (stack->sptr);	616	Safefree (stack->sptr);
581	#endif	617
582	Safefree (stack);	618	Safefree (stack);
583	}	619	}
584	else if (ctx->gencnt == stack->gencnt)	620	else if (ctx->gencnt == stack->gencnt)
585	--stack->usecnt;	621	--stack->usecnt;
586	}	622	}
…		…
598		634
599	coro_init_stacks (aTHX);	635	coro_init_stacks (aTHX);
600	/PL_curcop = 0;/	636	/PL_curcop = 0;/
601	/PL_in_eval = PL_in_eval;/ /* inherit */	637	/PL_in_eval = PL_in_eval;/ /* inherit */
602	SvREFCNT_dec (GvAV (PL_defgv));	638	SvREFCNT_dec (GvAV (PL_defgv));
603	GvAV (PL_defgv) = ctx->args;	639	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
604		640
605	SPAGAIN;	641	SPAGAIN;
606		642
607	if (ctx->stack)	643	if (ctx->stack)
608	{	644	{
…		…
635	* that doesn't matter, though, since it is only	671	* that doesn't matter, though, since it is only
636	* pp_nextstate and we never return...	672	* pp_nextstate and we never return...
637	* ah yes, and I don't care anyways ;)	673	* ah yes, and I don't care anyways ;)
638	*/	674	*/
639	PUTBACK;	675	PUTBACK;
640	PL_op = pp_entersub();	676	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
641	SPAGAIN;	677	SPAGAIN;
642		678
643	ENTER; /* necessary e.g. for dounwind */	679	ENTER; /* necessary e.g. for dounwind */
644	}	680	}
645	}	681	}
…		…
649	{	685	{
650	/*	686	/*
651	* this is a _very_ stripped down perl interpreter ;)	687	* this is a _very_ stripped down perl interpreter ;)
652	*/	688	*/
653	Coro__State ctx = (Coro__State)arg;	689	Coro__State ctx = (Coro__State)arg;
		690	JMPENV coro_start_env;
654		691
655	/FIXME//* must set up top_env here */	692	PL_top_env = &ctx->start_env;
		693
656	ctx->cursp = 0;	694	ctx->cursp = 0;
657	PL_op = PL_op->op_next;	695	PL_op = PL_op->op_next;
658	CALLRUNOPS(aTHX);	696	CALLRUNOPS(aTHX);
659		697
660	abort ();	698	abort ();
661	}	699	}
662		700
663	STATIC void	701	STATIC void
664	transfer(pTHX_ struct coro prev, struct coro next, int flags)	702	transfer(pTHX_ struct coro prev, struct coro next, int flags)
665	{	703	{
666	dSP;
667	dSTACKLEVEL;	704	dSTACKLEVEL;
		705	static struct coro *xnext;
668		706
669	if (prev != next)	707	if (prev != next)
670	{	708	{
		709	xnext = next;
		710
671	if (next->mainstack)	711	if (next->mainstack)
672	{	712	{
673	SAVE (prev, flags);	713	SAVE (prev, flags);
674	LOAD (next);	714	LOAD (next);
675		715
…		…
698	continue_coro, (void *)next,	738	continue_coro, (void *)next,
699	next->stack->sptr, labs (next->stack->ssize));	739	next->stack->sptr, labs (next->stack->ssize));
700	}	740	}
701		741
702	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		743	/* don't add any code here */
703	}	744	}
704		745
705	}	746	}
706	else if (next->tmps_ix == -2)	747	else if (next->tmps_ix == -2)
707	croak ("tried to transfer to running coroutine");	748	croak ("tried to transfer to running coroutine");
…		…
714	if (!prev->stack)	755	if (!prev->stack)
715	allocate_stack (prev, 0);	756	allocate_stack (prev, 0);
716		757
717	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	758	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
718	{	759	{
		760	PL_top_env = &next->start_env;
		761
719	setup_coro (next);	762	setup_coro (next);
720		763
721	prev->stack->refcnt++;	764	prev->stack->refcnt++;
722	prev->stack->usecnt++;	765	prev->stack->usecnt++;
723	next->stack = prev->stack;	766	next->stack = prev->stack;
724	next->gencnt = prev->gencnt;	767	next->gencnt = prev->gencnt;
725	}	768	}
726	else	769	else
727	{	770	{
		771	assert (!next->stack);
728	allocate_stack (next, 1);	772	allocate_stack (next, 1);
729	coro_create (&(next->stack->cctx),	773	coro_create (&(next->stack->cctx),
730	setup_coro, (void *)next,	774	setup_coro, (void *)next,
731	next->stack->sptr, labs (next->stack->ssize));	775	next->stack->sptr, labs (next->stack->ssize));
732	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	776	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		777	/* don't add any code here */
733	}	778	}
734	}	779	}
735	else	780	else
736	setup_coro (next);	781	setup_coro (next);
737	}	782	}
		783
		784	/*
		785	* xnext is now either prev or next, depending on wether
		786	* we switched the c stack or not. that's why I use a global
		787	* variable, that should become thread-specific at one point.
		788	*/
		789	xnext->cursp = stacklevel;
738	}	790	}
739		791
740	next->cursp = stacklevel;	792	if (coro_mortal)
741	}
742
743	static struct coro *
744	sv_to_coro (SV arg, const char funcname, const char *varname)
745	{
746	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
747	{	793	{
748	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	794	SvREFCNT_dec (coro_mortal);
749		795	coro_mortal = 0;
750	if (!he)
751	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
752
753	arg = HeVAL(he);
754	}	796	}
755		797	}
		798
		799	#define SV_CORO(sv,func) \
		800	do { \
		801	if (SvROK (sv)) \
		802	sv = SvRV (sv); \
		803	\
		804	if (SvTYPE(sv) == SVt_PVHV) \
		805	{ \
		806	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		807	\
		808	if (!he) \
		809	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		810	\
		811	(sv) = SvRV (HeVAL(he)); \
		812	} \
		813	\
756	/* must also be changed inside Coro::Cont::yield */	814	/* must also be changed inside Coro::Cont::yield */ \
757	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	815	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
758	return (struct coro ) SvIV((SV)SvRV(arg));
759	else
760	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	816	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
761	}	817	\
		818	} while(0)
		819
		820	#define SvSTATE(sv) (struct coro *)SvIV (sv)
762		821
763	static void	822	static void
764	api_transfer(pTHX_ SV prev, SV next, int flags)	823	api_transfer(pTHX_ SV prev, SV next, int flags)
765	{	824	{
766	transfer(aTHX_ sv_to_coro (prev, "Coro::transfer", "prev"),	825	SV_CORO (prev, "Coro::transfer");
767	sv_to_coro (next, "Coro::transfer", "next"),	826	SV_CORO (next, "Coro::transfer");
768	flags);	827
		828	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
769	}	829	}
770		830
771	/ Coro ******************************************************************/	831	/ Coro ******************************************************************/
772		832
773	#define PRIO_MAX 3	833	#define PRIO_MAX 3
…		…
778	#define PRIO_MIN -4	838	#define PRIO_MIN -4
779		839
780	/* for Coro.pm */	840	/* for Coro.pm */
781	static GV coro_current, coro_idle;	841	static GV coro_current, coro_idle;
782	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	842	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		843	static int coro_nready;
783		844
784	static void	845	static void
785	coro_enq (SV *sv)	846	coro_enq (SV *sv)
786	{	847	{
787	if (SvROK (sv))
788	{
789	SV *hv = SvRV (sv);
790	if (SvTYPE (hv) == SVt_PVHV)	848	if (SvTYPE (sv) == SVt_PVHV)
791	{	849	{
792	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);	850	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
793	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;	851	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
794		852
795	prio = prio > PRIO_MAX ? PRIO_MAX	853	prio = prio > PRIO_MAX ? PRIO_MAX
796	: prio < PRIO_MIN ? PRIO_MIN	854	: prio < PRIO_MIN ? PRIO_MIN
797	: prio;	855	: prio;
798		856
799	av_push (coro_ready [prio - PRIO_MIN], sv);	857	av_push (coro_ready [prio - PRIO_MIN], sv);
		858	coro_nready++;
800		859
801	return;	860	return;
802	}
803	}	861	}
804		862
805	croak ("Coro::ready tried to enqueue something that is not a coroutine");	863	croak ("Coro::ready tried to enqueue something that is not a coroutine");
806	}	864	}
807		865
…		…
814	if (min_prio < 0)	872	if (min_prio < 0)
815	min_prio = 0;	873	min_prio = 0;
816		874
817	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	875	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
818	if (av_len (coro_ready[prio]) >= 0)	876	if (av_len (coro_ready[prio]) >= 0)
		877	{
		878	coro_nready--;
819	return av_shift (coro_ready[prio]);	879	return av_shift (coro_ready[prio]);
		880	}
820		881
821	return 0;	882	return 0;
822	}	883	}
823		884
824	static void	885	static void
825	api_ready (SV *coro)	886	api_ready (SV *coro)
826	{	887	{
		888	if (SvROK (coro))
		889	coro = SvRV (coro);
		890
827	coro_enq (SvREFCNT_inc (coro));	891	coro_enq (SvREFCNT_inc (coro));
828	}	892	}
829		893
830	static void	894	static void
831	api_schedule (int cede)	895	api_schedule (void)
832	{	896	{
833	SV prev, next;	897	SV prev, next;
834		898
835	prev = GvSV (coro_current);	899	prev = SvRV (GvSV (coro_current));
836
837	if (cede)
838	coro_enq (SvREFCNT_inc (prev));
839
840	next = coro_deq (PRIO_MIN);	900	next = coro_deq (PRIO_MIN);
841		901
842	if (!next)	902	if (!next)
843	next = SvREFCNT_inc (GvSV (coro_idle));	903	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
844		904
845	GvSV (coro_current) = SvREFCNT_inc (next);	905	/* free this only after the transfer */
846	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),	906	coro_mortal = prev;
847	sv_to_coro (next, "Coro::schedule", "next coroutine"),	907	SV_CORO (prev, "Coro::schedule");
		908
		909	SvRV (GvSV (coro_current)) = next;
		910
		911	SV_CORO (next, "Coro::schedule");
		912
		913	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
848	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	914	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
849	SvREFCNT_dec (next);	915	}
850	SvREFCNT_dec (prev);	916
		917	static void
		918	api_cede (void)
		919	{
		920	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		921
		922	api_schedule ();
851	}	923	}
852		924
853	MODULE = Coro::State PACKAGE = Coro::State	925	MODULE = Coro::State PACKAGE = Coro::State
854		926
855	PROTOTYPES: ENABLE	927	PROTOTYPES: ENABLE
…		…
868	if (!padlist_cache)	940	if (!padlist_cache)
869	padlist_cache = newHV ();	941	padlist_cache = newHV ();
870		942
871	main_mainstack = PL_mainstack;	943	main_mainstack = PL_mainstack;
872		944
873	{
874	SV *sv = perl_get_sv("Coro::API", 1);
875
876	coroapi.ver = CORO_API_VERSION - 1;	945	coroapi.ver = CORO_API_VERSION;
877	coroapi.transfer = api_transfer;	946	coroapi.transfer = api_transfer;
878	coroapi.schedule = api_schedule;
879	coroapi.ready = api_ready;
880
881	GCoroAPI = &coroapi;
882	sv_setiv(sv, (IV)&coroapi);
883	SvREADONLY_on(sv);
884	}
885	}	947	}
886		948
887	Coro::State	949	Coro::State
888	_newprocess(args)	950	_newprocess(args)
889	SV * args	951	SV * args
…		…
892	Coro__State coro;	954	Coro__State coro;
893		955
894	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	956	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
895	croak ("Coro::State::_newprocess expects an arrayref");	957	croak ("Coro::State::_newprocess expects an arrayref");
896		958
897	New (0, coro, 1, struct coro);	959	Newz (0, coro, 1, struct coro);
898		960
899	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	961	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
900	coro->mainstack = 0; /* actual work is done inside transfer */	962	coro->mainstack = 0; /* actual work is done inside transfer */
901	coro->stack = 0;	963	coro->stack = 0;
902		964
		965	/* same as JMPENV_BOOTSTRAP */
		966	/* we might be able to recycle start_env, but safe is safe */
		967	//Zero(&coro->start_env, 1, JMPENV);
		968	coro->start_env.je_ret = -1;
		969	coro->start_env.je_mustcatch = TRUE;
		970
903	RETVAL = coro;	971	RETVAL = coro;
904	OUTPUT:	972	OUTPUT:
905	RETVAL	973	RETVAL
906		974
907	void	975	void
908	transfer(prev, next, flags)	976	transfer(prev, next, flags)
909	Coro::State_or_hashref prev	977	SV *prev
910	Coro::State_or_hashref next	978	SV *next
911	int flags	979	int flags
912	PROTOTYPE: @	980	PROTOTYPE: @
913	CODE:	981	CODE:
914	PUTBACK;	982	PUTBACK;
		983	SV_CORO (next, "Coro::transfer");
		984	SV_CORO (prev, "Coro::transfer");
915	transfer (aTHX_ prev, next, flags);	985	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
916	SPAGAIN;	986	SPAGAIN;
917		987
918	void	988	void
919	DESTROY(coro)	989	DESTROY(coro)
920	Coro::State coro	990	Coro::State coro
…		…
922		992
923	if (coro->mainstack && coro->mainstack != main_mainstack)	993	if (coro->mainstack && coro->mainstack != main_mainstack)
924	{	994	{
925	struct coro temp;	995	struct coro temp;
926		996
		997	PUTBACK;
927	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	998	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
928	LOAD(aTHX_ coro);	999	LOAD(aTHX_ coro);
		1000	SPAGAIN;
929		1001
930	destroy_stacks (aTHX);	1002	destroy_stacks (aTHX);
931		1003
932	LOAD((&temp)); /* this will get rid of defsv etc.. */	1004	LOAD((&temp)); /* this will get rid of defsv etc.. */
		1005	SPAGAIN;
933		1006
934	coro->mainstack = 0;	1007	coro->mainstack = 0;
935	}	1008	}
936		1009
937	deallocate_stack (coro);	1010	deallocate_stack (coro);
938		1011	SvREFCNT_dec (coro->args);
939	Safefree (coro);	1012	Safefree (coro);
940		1013
941	void	1014	void
942	flush()	1015	flush()
943	CODE:	1016	CODE:
…		…
970	SV *sv;	1043	SV *sv;
971	AV *defav = GvAV (PL_defgv);	1044	AV *defav = GvAV (PL_defgv);
972	struct coro prev, next;	1045	struct coro prev, next;
973		1046
974	if (!returnstk)	1047	if (!returnstk)
975	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1048	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
976		1049
977	/* set up @_ -- ugly */	1050	/* set up @_ -- ugly */
978	av_clear (defav);	1051	av_clear (defav);
979	av_fill (defav, items - 1);	1052	av_fill (defav, items - 1);
980	while (items--)	1053	while (items--)
…		…
1007	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1080	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1008	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1081	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1009		1082
1010	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1083	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1011	coro_ready[i] = newAV ();	1084	coro_ready[i] = newAV ();
		1085
		1086	{
		1087	SV *sv = perl_get_sv("Coro::API", 1);
		1088
		1089	coroapi.schedule = api_schedule;
		1090	coroapi.cede = api_cede;
		1091	coroapi.ready = api_ready;
		1092	coroapi.nready = &coro_nready;
		1093	coroapi.current = coro_current;
		1094
		1095	GCoroAPI = &coroapi;
		1096	sv_setiv(sv, (IV)&coroapi);
		1097	SvREADONLY_on(sv);
		1098	}
1012	}	1099	}
1013		1100
1014	void	1101	void
1015	ready(self)	1102	ready(self)
1016	SV * self	1103	SV * self
		1104	PROTOTYPE: $
1017	CODE:	1105	CODE:
1018	api_ready (self);	1106	api_ready (self);
1019		1107
		1108	int
		1109	nready(...)
		1110	PROTOTYPE:
		1111	CODE:
		1112	RETVAL = coro_nready;
		1113	OUTPUT:
		1114	RETVAL
		1115
1020	void	1116	void
1021	schedule(...)	1117	schedule(...)
1022	ALIAS:	1118	PROTOTYPE:
1023	cede = 1
1024	CODE:	1119	CODE:
1025	api_schedule (ix);	1120	api_schedule ();
1026		1121
		1122	void
		1123	cede(...)
		1124	PROTOTYPE:
		1125	CODE:
		1126	api_cede ();
		1127

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Comparing Coro/Coro/State.xs (file contents): Revision 1.24 by root, Tue Aug 14 14:56:22 2001 UTC vs. Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.24 by root, Tue Aug 14 14:56:22 2001 UTC vs.
Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC