[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 1.46 by pcg, Wed Nov 5 20:02:46 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	{
…		…
195		225
196	return newpadlist;	226	return newpadlist;
197	}	227	}
198		228
199	#ifdef MAY_FLUSH	229	#ifdef MAY_FLUSH
200	STATIC AV *	230	STATIC void
201	free_padlist (AV *padlist)	231	free_padlist (AV *padlist)
202	{	232	{
203	/* may be during global destruction */	233	/* may be during global destruction */
204	if (SvREFCNT(padlist))	234	if (SvREFCNT(padlist))
205	{	235	{
…		…
270	#endif	300	#endif
271		301
272	#define SB do {	302	#define SB do {
273	#define SE } while (0)	303	#define SE } while (0)
274		304
275	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	305	#define LOAD(state) load_state(aTHX_ (state));
276	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	306	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277		307
278	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE
279		309
280	static void	310	static void
281	load_state(pTHX_ Coro__State c)	311	load_state(pTHX_ Coro__State c)
…		…
287	PL_curstack = c->curstack;	317	PL_curstack = c->curstack;
288	PL_mainstack = c->mainstack;	318	PL_mainstack = c->mainstack;
289	PL_stack_sp = c->stack_sp;	319	PL_stack_sp = c->stack_sp;
290	PL_op = c->op;	320	PL_op = c->op;
291	PL_curpad = c->curpad;	321	PL_curpad = c->curpad;
		322	PL_comppad = c->comppad;
292	PL_stack_base = c->stack_base;	323	PL_stack_base = c->stack_base;
293	PL_stack_max = c->stack_max;	324	PL_stack_max = c->stack_max;
294	PL_tmps_stack = c->tmps_stack;	325	PL_tmps_stack = c->tmps_stack;
295	PL_tmps_floor = c->tmps_floor;	326	PL_tmps_floor = c->tmps_floor;
296	PL_tmps_ix = c->tmps_ix;	327	PL_tmps_ix = c->tmps_ix;
…		…
355		386
356	PUSHs (Nullsv);	387	PUSHs (Nullsv);
357	/* this loop was inspired by pp_caller */	388	/* this loop was inspired by pp_caller */
358	for (;;)	389	for (;;)
359	{	390	{
360	do	391	while (cxix >= 0)
361	{	392	{
362	PERL_CONTEXT *cx = &ccstk[cxix--];	393	PERL_CONTEXT *cx = &ccstk[cxix--];
363		394
364	if (CxTYPE(cx) == CXt_SUB)	395	if (CxTYPE(cx) == CXt_SUB)
365	{	396	{
…		…
384	PUSHs ((SV *)cv);	415	PUSHs ((SV *)cv);
385		416
386	get_padlist (cv); /* this is a monster */	417	get_padlist (cv); /* this is a monster */
387	}	418	}
388	}	419	}
		420	#ifdef CXt_FORMAT
389	else if (CxTYPE(cx) == CXt_FORMAT)	421	else if (CxTYPE(cx) == CXt_FORMAT)
390	{	422	{
391	/* I never used formats, so how should I know how these are implemented? */	423	/* I never used formats, so how should I know how these are implemented? */
392	/* my bold guess is as a simple, plain sub... */	424	/* my bold guess is as a simple, plain sub... */
393	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	425	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394	}	426	}
		427	#endif
395	}	428	}
396	while (cxix >= 0);
397		429
398	if (top_si->si_type == PERLSI_MAIN)	430	if (top_si->si_type == PERLSI_MAIN)
399	break;	431	break;
400		432
401	top_si = top_si->si_prev;	433	top_si = top_si->si_prev;
…		…
407	}	439	}
408		440
409	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	441	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
410	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	442	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
411	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	443	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		444
418	c->dowarn = PL_dowarn;	445	c->dowarn = PL_dowarn;
419	c->in_eval = PL_in_eval;	446	c->in_eval = PL_in_eval;
420		447
421	c->curstackinfo = PL_curstackinfo;	448	c->curstackinfo = PL_curstackinfo;
422	c->curstack = PL_curstack;	449	c->curstack = PL_curstack;
423	c->mainstack = PL_mainstack;	450	c->mainstack = PL_mainstack;
424	c->stack_sp = PL_stack_sp;	451	c->stack_sp = PL_stack_sp;
425	c->op = PL_op;	452	c->op = PL_op;
426	c->curpad = PL_curpad;	453	c->curpad = PL_curpad;
		454	c->comppad = PL_comppad;
427	c->stack_base = PL_stack_base;	455	c->stack_base = PL_stack_base;
428	c->stack_max = PL_stack_max;	456	c->stack_max = PL_stack_max;
429	c->tmps_stack = PL_tmps_stack;	457	c->tmps_stack = PL_tmps_stack;
430	c->tmps_floor = PL_tmps_floor;	458	c->tmps_floor = PL_tmps_floor;
431	c->tmps_ix = PL_tmps_ix;	459	c->tmps_ix = PL_tmps_ix;
…		…
471		499
472	New(54,PL_markstack,16,I32);	500	New(54,PL_markstack,16,I32);
473	PL_markstack_ptr = PL_markstack;	501	PL_markstack_ptr = PL_markstack;
474	PL_markstack_max = PL_markstack + 16;	502	PL_markstack_max = PL_markstack + 16;
475		503
		504	#ifdef SET_MARK_OFFSET
476	SET_MARK_OFFSET;	505	SET_MARK_OFFSET;
		506	#endif
477		507
478	New(54,PL_scopestack,16,I32);	508	New(54,PL_scopestack,16,I32);
479	PL_scopestack_ix = 0;	509	PL_scopestack_ix = 0;
480	PL_scopestack_max = 16;	510	PL_scopestack_max = 16;
481		511
…		…
493	* still there is a memleak of 128 bytes...	523	* still there is a memleak of 128 bytes...
494	*/	524	*/
495	STATIC void	525	STATIC void
496	destroy_stacks(pTHX)	526	destroy_stacks(pTHX)
497	{	527	{
		528	if (!IN_DESTRUCT)
		529	{
498	/* is this ugly, I ask? */	530	/* is this ugly, I ask? */
499	while (PL_scopestack_ix)	531	while (PL_scopestack_ix)
500	LEAVE;	532	LEAVE;
501		533
502	/* sure it is, but more important: is it correct?? :/ */	534	/* sure it is, but more important: is it correct?? :/ */
503	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */	535	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
504	FREETMPS;	536	FREETMPS;
		537	}
505		538
506	while (PL_curstackinfo->si_next)	539	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	540	PL_curstackinfo = PL_curstackinfo->si_next;
508		541
509	while (PL_curstackinfo)	542	while (PL_curstackinfo)
…		…
514	dSP;	547	dSP;
515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	548	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516	PUTBACK; /* possibly superfluous */	549	PUTBACK; /* possibly superfluous */
517	}	550	}
518		551
519	if (PL_main_cv != Nullcv) /* don't during destruction. hack? */	552	if (!IN_DESTRUCT)
		553	{
520	dounwind(-1);	554	dounwind(-1);
521
522	SvREFCNT_dec(PL_curstackinfo->si_stack);	555	SvREFCNT_dec(PL_curstackinfo->si_stack);
		556	}
		557
523	Safefree(PL_curstackinfo->si_cxstack);	558	Safefree(PL_curstackinfo->si_cxstack);
524	Safefree(PL_curstackinfo);	559	Safefree(PL_curstackinfo);
525	PL_curstackinfo = p;	560	PL_curstackinfo = p;
526	}	561	}
527		562
…		…
542	stack->refcnt = 1;	577	stack->refcnt = 1;
543	stack->usecnt = 1;	578	stack->usecnt = 1;
544	stack->gencnt = ctx->gencnt = 0;	579	stack->gencnt = ctx->gencnt = 0;
545	if (alloc)	580	if (alloc)
546	{	581	{
547	#ifdef HAVE_MMAP	582	#if HAVE_MMAP
548	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	583	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);	584	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
550	if (stack->sptr == (void *)-1)	585	if (stack->sptr == (void *)-1)
551	#endif	586	#endif
552	{	587	{
553	/FIXME//D//* reasonable stack size! */	588	/FIXME//D//* reasonable stack size! */
554	stack->ssize = -4096 * sizeof (long);	589	stack->ssize = -4096 * sizeof (long);
…		…
635	* that doesn't matter, though, since it is only	670	* that doesn't matter, though, since it is only
636	* pp_nextstate and we never return...	671	* pp_nextstate and we never return...
637	* ah yes, and I don't care anyways ;)	672	* ah yes, and I don't care anyways ;)
638	*/	673	*/
639	PUTBACK;	674	PUTBACK;
640	PL_op = pp_entersub();	675	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
641	SPAGAIN;	676	SPAGAIN;
642		677
643	ENTER; /* necessary e.g. for dounwind */	678	ENTER; /* necessary e.g. for dounwind */
644	}	679	}
645	}	680	}
…		…
649	{	684	{
650	/*	685	/*
651	* this is a _very_ stripped down perl interpreter ;)	686	* this is a _very_ stripped down perl interpreter ;)
652	*/	687	*/
653	Coro__State ctx = (Coro__State)arg;	688	Coro__State ctx = (Coro__State)arg;
		689	JMPENV coro_start_env;
654		690
655	/FIXME//* must set up top_env here */	691	PL_top_env = &ctx->start_env;
		692
656	ctx->cursp = 0;	693	ctx->cursp = 0;
657	PL_op = PL_op->op_next;	694	PL_op = PL_op->op_next;
658	CALLRUNOPS(aTHX);	695	CALLRUNOPS(aTHX);
659		696
660	abort ();	697	abort ();
661	}	698	}
662		699
663	STATIC void	700	STATIC void
664	transfer(pTHX_ struct coro prev, struct coro next, int flags)	701	transfer(pTHX_ struct coro prev, struct coro next, int flags)
665	{	702	{
666	dSP;
667	dSTACKLEVEL;	703	dSTACKLEVEL;
		704	static struct coro *xnext;
668		705
669	if (prev != next)	706	if (prev != next)
670	{	707	{
		708	xnext = next;
		709
671	if (next->mainstack)	710	if (next->mainstack)
672	{	711	{
673	SAVE (prev, flags);	712	SAVE (prev, flags);
674	LOAD (next);	713	LOAD (next);
675		714
…		…
698	continue_coro, (void *)next,	737	continue_coro, (void *)next,
699	next->stack->sptr, labs (next->stack->ssize));	738	next->stack->sptr, labs (next->stack->ssize));
700	}	739	}
701		740
702	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	741	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		742	/* don't add any code here */
703	}	743	}
704		744
705	}	745	}
706	else if (next->tmps_ix == -2)	746	else if (next->tmps_ix == -2)
707	croak ("tried to transfer to running coroutine");	747	croak ("tried to transfer to running coroutine");
…		…
714	if (!prev->stack)	754	if (!prev->stack)
715	allocate_stack (prev, 0);	755	allocate_stack (prev, 0);
716		756
717	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	757	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
718	{	758	{
		759	PL_top_env = &next->start_env;
		760
719	setup_coro (next);	761	setup_coro (next);
720		762
721	prev->stack->refcnt++;	763	prev->stack->refcnt++;
722	prev->stack->usecnt++;	764	prev->stack->usecnt++;
723	next->stack = prev->stack;	765	next->stack = prev->stack;
…		…
728	allocate_stack (next, 1);	770	allocate_stack (next, 1);
729	coro_create (&(next->stack->cctx),	771	coro_create (&(next->stack->cctx),
730	setup_coro, (void *)next,	772	setup_coro, (void *)next,
731	next->stack->sptr, labs (next->stack->ssize));	773	next->stack->sptr, labs (next->stack->ssize));
732	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	774	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		775	/* don't add any code here */
733	}	776	}
734	}	777	}
735	else	778	else
736	setup_coro (next);	779	setup_coro (next);
737	}	780	}
		781
		782	/*
		783	* xnext is now either prev or next, depending on wether
		784	* we switched the c stack or not. that's why I use a global
		785	* variable, that should become thread-specific at one point.
		786	*/
		787	xnext->cursp = stacklevel;
738	}	788	}
739		789
740	next->cursp = stacklevel;	790	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	{	791	{
748	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	792	SvREFCNT_dec (coro_mortal);
749		793	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	}	794	}
755		795	}
		796
		797	#define SV_CORO(sv,func) \
		798	do { \
		799	if (SvROK (sv)) \
		800	sv = SvRV (sv); \
		801	\
		802	if (SvTYPE(sv) == SVt_PVHV) \
		803	{ \
		804	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		805	\
		806	if (!he) \
		807	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		808	\
		809	(sv) = SvRV (HeVAL(he)); \
		810	} \
		811	\
756	/* must also be changed inside Coro::Cont::yield */	812	/* must also be changed inside Coro::Cont::yield */ \
757	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	813	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);	814	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
761	}	815	\
		816	} while(0)
		817
		818	#define SvSTATE(sv) (struct coro *)SvIV (sv)
762		819
763	static void	820	static void
764	api_transfer(pTHX_ SV prev, SV next, int flags)	821	api_transfer(pTHX_ SV prev, SV next, int flags)
765	{	822	{
766	transfer(aTHX_ sv_to_coro (prev, "Coro::transfer", "prev"),	823	SV_CORO (prev, "Coro::transfer");
767	sv_to_coro (next, "Coro::transfer", "next"),	824	SV_CORO (next, "Coro::transfer");
768	flags);	825
		826	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
769	}	827	}
770		828
771	/ Coro ******************************************************************/	829	/ Coro ******************************************************************/
772		830
773	#define PRIO_MAX 3	831	#define PRIO_MAX 3
…		…
778	#define PRIO_MIN -4	836	#define PRIO_MIN -4
779		837
780	/* for Coro.pm */	838	/* for Coro.pm */
781	static GV coro_current, coro_idle;	839	static GV coro_current, coro_idle;
782	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	840	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		841	static int coro_nready;
783		842
784	static void	843	static void
785	coro_enq (SV *sv)	844	coro_enq (SV *sv)
786	{	845	{
787	if (SvROK (sv))
788	{
789	SV *hv = SvRV (sv);
790	if (SvTYPE (hv) == SVt_PVHV)	846	if (SvTYPE (sv) == SVt_PVHV)
791	{	847	{
792	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);	848	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
793	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;	849	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
794		850
795	prio = prio > PRIO_MAX ? PRIO_MAX	851	prio = prio > PRIO_MAX ? PRIO_MAX
796	: prio < PRIO_MIN ? PRIO_MIN	852	: prio < PRIO_MIN ? PRIO_MIN
797	: prio;	853	: prio;
798		854
799	av_push (coro_ready [prio - PRIO_MIN], sv);	855	av_push (coro_ready [prio - PRIO_MIN], sv);
		856	coro_nready++;
800		857
801	return;	858	return;
802	}
803	}	859	}
804		860
805	croak ("Coro::ready tried to enqueue something that is not a coroutine");	861	croak ("Coro::ready tried to enqueue something that is not a coroutine");
806	}	862	}
807		863
…		…
814	if (min_prio < 0)	870	if (min_prio < 0)
815	min_prio = 0;	871	min_prio = 0;
816		872
817	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	873	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
818	if (av_len (coro_ready[prio]) >= 0)	874	if (av_len (coro_ready[prio]) >= 0)
		875	{
		876	coro_nready--;
819	return av_shift (coro_ready[prio]);	877	return av_shift (coro_ready[prio]);
		878	}
820		879
821	return 0;	880	return 0;
822	}	881	}
823		882
824	static void	883	static void
825	api_ready (SV *coro)	884	api_ready (SV *coro)
826	{	885	{
		886	if (SvROK (coro))
		887	coro = SvRV (coro);
		888
827	coro_enq (SvREFCNT_inc (coro));	889	coro_enq (SvREFCNT_inc (coro));
828	}	890	}
829		891
830	static void	892	static void
831	api_schedule (int cede)	893	api_schedule (void)
832	{	894	{
833	SV prev, next;	895	SV prev, next;
834		896
835	prev = GvSV (coro_current);	897	prev = SvRV (GvSV (coro_current));
836
837	if (cede)
838	coro_enq (SvREFCNT_inc (prev));
839
840	next = coro_deq (PRIO_MIN);	898	next = coro_deq (PRIO_MIN);
841		899
842	if (!next)	900	if (!next)
843	next = SvREFCNT_inc (GvSV (coro_idle));	901	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
844		902
845	GvSV (coro_current) = SvREFCNT_inc (next);	903	/* free this only after the transfer */
846	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),	904	coro_mortal = prev;
847	sv_to_coro (next, "Coro::schedule", "next coroutine"),	905	SV_CORO (prev, "Coro::schedule");
		906
		907	SvRV (GvSV (coro_current)) = next;
		908
		909	SV_CORO (next, "Coro::schedule");
		910
		911	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
848	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	912	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
849	SvREFCNT_dec (next);	913	}
850	SvREFCNT_dec (prev);	914
		915	static void
		916	api_cede (void)
		917	{
		918	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		919
		920	api_schedule ();
851	}	921	}
852		922
853	MODULE = Coro::State PACKAGE = Coro::State	923	MODULE = Coro::State PACKAGE = Coro::State
854		924
855	PROTOTYPES: ENABLE	925	PROTOTYPES: ENABLE
…		…
868	if (!padlist_cache)	938	if (!padlist_cache)
869	padlist_cache = newHV ();	939	padlist_cache = newHV ();
870		940
871	main_mainstack = PL_mainstack;	941	main_mainstack = PL_mainstack;
872		942
873	{
874	SV *sv = perl_get_sv("Coro::API", 1);
875
876	coroapi.ver = CORO_API_VERSION - 1;	943	coroapi.ver = CORO_API_VERSION;
877	coroapi.transfer = api_transfer;	944	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	}	945	}
886		946
887	Coro::State	947	Coro::State
888	_newprocess(args)	948	_newprocess(args)
889	SV * args	949	SV * args
…		…
898		958
899	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	959	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
900	coro->mainstack = 0; /* actual work is done inside transfer */	960	coro->mainstack = 0; /* actual work is done inside transfer */
901	coro->stack = 0;	961	coro->stack = 0;
902		962
		963	/* same as JMPENV_BOOTSTRAP */
		964	/* we might be able to recycle start_env, but safe is safe */
		965	Zero(&coro->start_env, 1, JMPENV);
		966	coro->start_env.je_ret = -1;
		967	coro->start_env.je_mustcatch = TRUE;
		968
903	RETVAL = coro;	969	RETVAL = coro;
904	OUTPUT:	970	OUTPUT:
905	RETVAL	971	RETVAL
906		972
907	void	973	void
908	transfer(prev, next, flags)	974	transfer(prev, next, flags)
909	Coro::State_or_hashref prev	975	SV *prev
910	Coro::State_or_hashref next	976	SV *next
911	int flags	977	int flags
912	PROTOTYPE: @	978	PROTOTYPE: @
913	CODE:	979	CODE:
914	PUTBACK;	980	PUTBACK;
		981	SV_CORO (next, "Coro::transfer");
		982	SV_CORO (prev, "Coro::transfer");
915	transfer (aTHX_ prev, next, flags);	983	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
916	SPAGAIN;	984	SPAGAIN;
917		985
918	void	986	void
919	DESTROY(coro)	987	DESTROY(coro)
920	Coro::State coro	988	Coro::State coro
…		…
922		990
923	if (coro->mainstack && coro->mainstack != main_mainstack)	991	if (coro->mainstack && coro->mainstack != main_mainstack)
924	{	992	{
925	struct coro temp;	993	struct coro temp;
926		994
		995	PUTBACK;
927	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	996	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
928	LOAD(aTHX_ coro);	997	LOAD(aTHX_ coro);
		998	SPAGAIN;
929		999
930	destroy_stacks (aTHX);	1000	destroy_stacks (aTHX);
931		1001
932	LOAD((&temp)); /* this will get rid of defsv etc.. */	1002	LOAD((&temp)); /* this will get rid of defsv etc.. */
		1003	SPAGAIN;
933		1004
934	coro->mainstack = 0;	1005	coro->mainstack = 0;
935	}	1006	}
936		1007
937	deallocate_stack (coro);	1008	deallocate_stack (coro);
…		…
970	SV *sv;	1041	SV *sv;
971	AV *defav = GvAV (PL_defgv);	1042	AV *defav = GvAV (PL_defgv);
972	struct coro prev, next;	1043	struct coro prev, next;
973		1044
974	if (!returnstk)	1045	if (!returnstk)
975	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1046	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
976		1047
977	/* set up @_ -- ugly */	1048	/* set up @_ -- ugly */
978	av_clear (defav);	1049	av_clear (defav);
979	av_fill (defav, items - 1);	1050	av_fill (defav, items - 1);
980	while (items--)	1051	while (items--)
…		…
1007	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1078	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1008	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1079	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1009		1080
1010	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1081	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1011	coro_ready[i] = newAV ();	1082	coro_ready[i] = newAV ();
		1083
		1084	{
		1085	SV *sv = perl_get_sv("Coro::API", 1);
		1086
		1087	coroapi.schedule = api_schedule;
		1088	coroapi.cede = api_cede;
		1089	coroapi.ready = api_ready;
		1090	coroapi.nready = &coro_nready;
		1091	coroapi.current = coro_current;
		1092
		1093	GCoroAPI = &coroapi;
		1094	sv_setiv(sv, (IV)&coroapi);
		1095	SvREADONLY_on(sv);
		1096	}
1012	}	1097	}
1013		1098
1014	void	1099	void
1015	ready(self)	1100	ready(self)
1016	SV * self	1101	SV * self
		1102	PROTOTYPE: $
1017	CODE:	1103	CODE:
1018	api_ready (self);	1104	api_ready (self);
1019		1105
		1106	int
		1107	nready(...)
		1108	PROTOTYPE:
		1109	CODE:
		1110	RETVAL = coro_nready;
		1111	OUTPUT:
		1112	RETVAL
		1113
1020	void	1114	void
1021	schedule(...)	1115	schedule(...)
1022	ALIAS:	1116	PROTOTYPE:
1023	cede = 1
1024	CODE:	1117	CODE:
1025	api_schedule (ix);	1118	api_schedule ();
1026		1119
		1120	void
		1121	cede(...)
		1122	PROTOTYPE:
		1123	CODE:
		1124	api_cede ();
		1125

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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 1.46 by pcg, Wed Nov 5 20:02:46 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 1.46 by pcg, Wed Nov 5 20:02:46 2003 UTC