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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.8 by root, Thu Jul 19 04:13:22 2001 UTC vs.
Revision 1.16 by root, Wed Jul 25 04:26:55 2001 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	#if 1	5	#include "libcoro/coro.c"
6	# define CHK(x) (void *)0	6
		7	#ifdef HAVE_MMAP
		8	# include <unistd.h>
		9	# include <sys/mman.h>
		10	# ifndef MAP_ANON
		11	# ifdef MAP_ANONYMOUS
		12	# define MAP_ANON MAP_ANONYMOUS
		13	# else
		14	# undef HAVE_MMAP
		15	# endif
		16	# endif
		17	#endif
		18
		19	#define MAY_FLUSH /* increases codesize */
		20
		21	/* perl-related */
		22	#define TRANSFER_SAVE_DEFAV 0x00000001
		23	#define TRANSFER_SAVE_DEFSV 0x00000002
		24	#define TRANSFER_SAVE_ERRSV 0x00000004
		25	/* c-related */
		26	#define TRANSFER_SAVE_CCTXT 0x00000008
		27	#ifdef CORO_LAZY_STACK
		28	# define TRANSFER_LAZY_STACK 0x00000010
7	#else	29	#else
8	# define CHK(x) if (!(x)) croak("FATAL, CHK: " #x)	30	# define TRANSFER_LAZY_STACK 0x00000000
9	#endif	31	#endif
10		32
11	#define MAY_FLUSH /* increases codesize */	33	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
		34	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
12		35
13	#define SUB_INIT "Coro::State::_newcoro"	36	#define SUB_INIT "Coro::State::initialize"
		37	#define UCORO_STATE "_coro_state"
14		38
15	#define SAVE_DEFAV 0x00000001	39	/* The next macro should delcare a variable stacklevel that contains and approximation
16	#define SAVE_DEFSV 0x00000002	40	* to the current C stack pointer. It's property is that it changes with each call
17	#define SAVE_ERRSV 0x00000004	41	* and should be unique. */
		42	#define dSTACKLEVEL void *stacklevel = &stacklevel
18		43
19	#define SAVE_ALL -1	44	#define labs(l) ((l) >= 0 ? (l) : -(l))
		45
		46	/* this is actually not only the c stack but also c registers etc... */
		47	typedef struct {
		48	int refcnt; /* pointer reference counter */
		49	int usecnt; /* shared by how many coroutines */
		50	int gencnt; /* generation counter */
		51
		52	coro_context cctx;
		53
		54	void *sptr;
		55	long ssize; /* positive == mmap, otherwise malloc */
		56	} coro_stack;
		57
		58	static coro_stack main_stack = { 1, 0, 0 };
20		59
21	struct coro {	60	struct coro {
		61	/* the optional C context */
		62	coro_stack *stack;
		63	void *cursp;
		64	int gencnt;
		65
22	/* optionally saved, might be zero */	66	/* optionally saved, might be zero */
23	AV *defav;	67	AV *defav;
24	SV *defsv;	68	SV *defsv;
25	SV *errsv;	69	SV *errsv;
26		70
51	I32 savestack_max;	95	I32 savestack_max;
52	OP **retstack;	96	OP **retstack;
53	I32 retstack_ix;	97	I32 retstack_ix;
54	I32 retstack_max;	98	I32 retstack_max;
55	COP *curcop;	99	COP *curcop;
		100	JMPENV start_env;
		101	JMPENV *top_env;
56		102
57	/* data associated with this coroutine (initial args) */	103	/* data associated with this coroutine (initial args) */
58	AV *args;	104	AV *args;
59	};	105	};
60		106
61	typedef struct coro *Coro__State;	107	typedef struct coro *Coro__State;
62	typedef struct coro *Coro__State_or_hashref;	108	typedef struct coro *Coro__State_or_hashref;
63		109
		110	static AV main_mainstack; / used to differentiate between $main and others */
		111	static HV *coro_state_stash;
		112	static SV *ucoro_state_sv;
		113	static U32 ucoro_state_hash;
64	static HV *padlist_cache;	114	static HV *padlist_cache;
65		115
66	/* mostly copied from op.c:cv_clone2 */	116	/* mostly copied from op.c:cv_clone2 */
67	STATIC AV *	117	STATIC AV *
68	clone_padlist (AV *protopadlist)	118	clone_padlist (AV *protopadlist)
…		…
231	#endif	281	#endif
232		282
233	#define SB do {	283	#define SB do {
234	#define SE } while (0)	284	#define SE } while (0)
235		285
236	#define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE	286	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE
237	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE	287	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE
238		288
239	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE
240		290
241	static void	291	static void
242	load_state(pTHX_ Coro__State c)	292	load_state(pTHX_ Coro__State c)
…		…
266	PL_savestack_max = c->savestack_max;	316	PL_savestack_max = c->savestack_max;
267	PL_retstack = c->retstack;	317	PL_retstack = c->retstack;
268	PL_retstack_ix = c->retstack_ix;	318	PL_retstack_ix = c->retstack_ix;
269	PL_retstack_max = c->retstack_max;	319	PL_retstack_max = c->retstack_max;
270	PL_curcop = c->curcop;	320	PL_curcop = c->curcop;
		321	PL_start_env = c->start_env;
		322	PL_top_env = c->top_env;
271		323
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	324	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	325	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	326	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
275		327
…		…
302	save_state(pTHX_ Coro__State c, int flags)	354	save_state(pTHX_ Coro__State c, int flags)
303	{	355	{
304	{	356	{
305	dSP;	357	dSP;
306	I32 cxix = cxstack_ix;	358	I32 cxix = cxstack_ix;
		359	PERL_CONTEXT *ccstk = cxstack;
307	PERL_SI *top_si = PL_curstackinfo;	360	PERL_SI *top_si = PL_curstackinfo;
308	PERL_CONTEXT *ccstk = cxstack;
309		361
310	/*	362	/*
311	* the worst thing you can imagine happens first - we have to save	363	* the worst thing you can imagine happens first - we have to save
312	* (and reinitialize) all cv's in the whole callchain :(	364	* (and reinitialize) all cv's in the whole callchain :(
313	*/	365	*/
314		366
315	PUSHs (Nullsv);	367	PUSHs (Nullsv);
316	/* this loop was inspired by pp_caller */	368	/* this loop was inspired by pp_caller */
317	for (;;)	369	for (;;)
318	{	370	{
319	do	371	do
320	{	372	{
321	PERL_CONTEXT *cx = &ccstk[cxix--];	373	PERL_CONTEXT *cx = &ccstk[cxix--];
322		374
323	if (CxTYPE(cx) == CXt_SUB)	375	if (CxTYPE(cx) == CXt_SUB)
324	{	376	{
…		…
363	}	415	}
364		416
365	PUTBACK;	417	PUTBACK;
366	}	418	}
367		419
368	c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	420	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
369	c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	421	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
370	c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	422	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		423
		424	/* I have not the slightest idea of why av_reify is necessary */
		425	/* but if it's missing the defav contents magically get replaced sometimes */
		426	if (c->defav)
		427	av_reify (c->defav);
371		428
372	c->dowarn = PL_dowarn;	429	c->dowarn = PL_dowarn;
373		430
374	c->curstackinfo = PL_curstackinfo;	431	c->curstackinfo = PL_curstackinfo;
375	c->curstack = PL_curstack;	432	c->curstack = PL_curstack;
…		…
394	c->savestack_max = PL_savestack_max;	451	c->savestack_max = PL_savestack_max;
395	c->retstack = PL_retstack;	452	c->retstack = PL_retstack;
396	c->retstack_ix = PL_retstack_ix;	453	c->retstack_ix = PL_retstack_ix;
397	c->retstack_max = PL_retstack_max;	454	c->retstack_max = PL_retstack_max;
398	c->curcop = PL_curcop;	455	c->curcop = PL_curcop;
		456	c->start_env = PL_start_env;
		457	c->top_env = PL_top_env;
		458	}
		459
		460	/*
		461	* allocate various perl stacks. This is an exact copy
		462	* of perl.c:init_stacks, except that it uses less memory
		463	* on the assumption that coroutines do not usually need
		464	* a lot of stackspace.
		465	*/
		466	STATIC void
		467	coro_init_stacks (pTHX)
		468	{
		469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
		470	PL_curstackinfo->si_type = PERLSI_MAIN;
		471	PL_curstack = PL_curstackinfo->si_stack;
		472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
		473
		474	PL_stack_base = AvARRAY(PL_curstack);
		475	PL_stack_sp = PL_stack_base;
		476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
		477
		478	New(50,PL_tmps_stack,96,SV*);
		479	PL_tmps_floor = -1;
		480	PL_tmps_ix = -1;
		481	PL_tmps_max = 96;
		482
		483	New(54,PL_markstack,16,I32);
		484	PL_markstack_ptr = PL_markstack;
		485	PL_markstack_max = PL_markstack + 16;
		486
		487	SET_MARK_OFFSET;
		488
		489	New(54,PL_scopestack,16,I32);
		490	PL_scopestack_ix = 0;
		491	PL_scopestack_max = 16;
		492
		493	New(54,PL_savestack,96,ANY);
		494	PL_savestack_ix = 0;
		495	PL_savestack_max = 96;
		496
		497	New(54,PL_retstack,8,OP*);
		498	PL_retstack_ix = 0;
		499	PL_retstack_max = 8;
399	}	500	}
400		501
401	/*	502	/*
402	* destroy the stacks, the callchain etc...	503	* destroy the stacks, the callchain etc...
403	* still there is a memleak of 128 bytes...	504	* still there is a memleak of 128 bytes...
…		…
439	Safefree(PL_scopestack);	540	Safefree(PL_scopestack);
440	Safefree(PL_savestack);	541	Safefree(PL_savestack);
441	Safefree(PL_retstack);	542	Safefree(PL_retstack);
442	}	543	}
443		544
		545	static void
		546	allocate_stack (Coro__State ctx, int alloc)
		547	{
		548	coro_stack *stack;
		549
		550	New (0, stack, 1, coro_stack);
		551
		552	stack->refcnt = 1;
		553	stack->usecnt = 1;
		554	stack->gencnt = ctx->gencnt = 0;
		555	if (alloc)
		556	{
		557	#ifdef HAVE_MMAP
		558	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write */
		559	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);
		560	if (stack->sptr == (void *)-1)
		561	#endif
		562	{
		563	/FIXME//D//* reasonable stack size! */
		564	stack->ssize = -4096 * sizeof (long);
		565	New (0, stack->sptr, 4096, long);
		566	}
		567	}
		568	else
		569	stack->sptr = 0;
		570
		571	ctx->stack = stack;
		572	}
		573
		574	static void
		575	deallocate_stack (Coro__State ctx)
		576	{
		577	coro_stack *stack = ctx->stack;
		578
		579	ctx->stack = 0;
		580
		581	if (stack)
		582	{
		583	if (!--stack->refcnt)
		584	{
		585	#ifdef HAVE_MMAP
		586	if (stack->ssize > 0 && stack->sptr)
		587	munmap (stack->sptr, stack->ssize);
		588	else
		589	#else
		590	Safefree (stack->sptr);
		591	#endif
		592	Safefree (stack);
		593	}
		594	else if (ctx->gencnt == stack->gencnt)
		595	--stack->usecnt;
		596	}
		597	}
		598
		599	static void
		600	setup_coro (void *arg)
		601	{
		602	/*
		603	* emulate part of the perl startup here.
		604	*/
		605	dSP;
		606	Coro__State ctx = (Coro__State)arg;
		607	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
		608
		609	coro_init_stacks (aTHX);
		610	JMPENV_BOOTSTRAP;
		611	SPAGAIN;
		612
		613	/PL_curcop = 0;/
		614	SvREFCNT_dec (GvAV (PL_defgv));
		615	GvAV (PL_defgv) = ctx->args;
		616
		617	if (ctx->stack)
		618	{
		619	ctx->cursp = 0;
		620
		621	PUSHMARK(SP);
		622	PUTBACK;
		623	(void) call_sv (sub_init, G_VOID\|G_NOARGS);
		624	croak ("FATAL: CCTXT coroutine returned!");
		625	}
		626	else
		627	{
		628	UNOP myop;
		629
		630	PL_op = (OP *)&myop;
		631
		632	Zero(&myop, 1, UNOP);
		633	myop.op_next = Nullop;
		634	myop.op_flags = OPf_WANT_VOID;
		635
		636	PUSHMARK(SP);
		637	XPUSHs (sub_init);
		638	/*
		639	* the next line is slightly wrong, as PL_op->op_next
		640	* is actually being executed so we skip the first op.
		641	* that doesn't matter, though, since it is only
		642	* pp_nextstate and we never return...
		643	* ah yes, and I don't care anyways ;)
		644	*/
		645	PUTBACK;
		646	PL_op = pp_entersub();
		647	SPAGAIN;
		648
		649	ENTER; /* necessary e.g. for dounwind */
		650	}
		651	}
		652
		653	static void
		654	continue_coro (void *arg)
		655	{
		656	/*
		657	* this is a _very_ stripped down perl interpreter ;)
		658	*/
		659	Coro__State ctx = (Coro__State)arg;
		660
		661	ctx->cursp = 0;
		662	PL_op = PL_op->op_next;
		663	CALLRUNOPS(aTHX);
		664	/NORETURN/
		665	abort ();
		666	}
		667
444	STATIC void	668	STATIC void
445	transfer(pTHX_ struct coro prev, struct coro next, int flags)	669	transfer(pTHX_ struct coro prev, struct coro next, int flags)
446	{	670	{
447	dSP;	671	dSP;
		672	dSTACKLEVEL;
448		673
449	if (prev != next)	674	if (prev != next)
450	{	675	{
451	/*
452	* this could be done in newprocess which would lead to
453	* extremely elegant and fast (just SAVE/LOAD)
454	* code here, but lazy allocation of stacks has also
455	* some virtues and the overhead of the if() is nil.
456	*/
457	if (next->mainstack)	676	if (next->mainstack)
458	{	677	{
459	SAVE (prev, flags);	678	SAVE (prev, flags);
460	LOAD (next);	679	LOAD (next);
		680
461	/* mark this state as in-use */	681	/* mark this state as in-use */
462	next->mainstack = 0;	682	next->mainstack = 0;
463	next->tmps_ix = -2;	683	next->tmps_ix = -2;
		684
		685	/* stacklevel changed? if yes, grab the stack for us! */
		686	if (flags & TRANSFER_SAVE_CCTXT)
		687	{
		688	if (!prev->stack)
		689	allocate_stack (prev, 0);
		690	else if (prev->cursp != stacklevel
		691	&& prev->stack->usecnt > 1)
		692	{
		693	prev->gencnt = ++prev->stack->gencnt;
		694	prev->stack->usecnt = 1;
		695	}
		696
		697	/* has our stack been invalidated? */
		698	if (next->stack && next->stack->gencnt != next->gencnt)
		699	{
		700	deallocate_stack (next);
		701	allocate_stack (next, 1);
		702	coro_create (&(next->stack->cctx),
		703	continue_coro, (void *)next,
		704	next->stack->sptr, labs (next->stack->ssize));
		705	}
		706
		707	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		708	}
		709
464	}	710	}
465	else if (next->tmps_ix == -2)	711	else if (next->tmps_ix == -2)
466	{
467	croak ("tried to transfer to running coroutine");	712	croak ("tried to transfer to running coroutine");
468	}
469	else	713	else
470	{	714	{
471	/*
472	* emulate part of the perl startup here.
473	*/
474	UNOP myop;
475
476	SAVE (prev, -1); /* first get rid of the old state */	715	SAVE (prev, -1); /* first get rid of the old state */
477		716
478	init_stacks (); /* from perl.c */	717	if (flags & TRANSFER_SAVE_CCTXT)
479	SPAGAIN;
480
481	PL_op = (OP *)&myop;
482	/PL_curcop = 0;/
483	SvREFCNT_dec (GvAV (PL_defgv));
484	GvAV (PL_defgv) = next->args;
485
486	Zero(&myop, 1, UNOP);
487	myop.op_next = Nullop;
488	myop.op_flags = OPf_WANT_VOID;
489
490	PUSHMARK(SP);
491	XPUSHs ((SV*)get_cv(SUB_INIT, TRUE));
492	/*
493	* the next line is slightly wrong, as PL_op->op_next
494	* is actually being executed so we skip the first op.
495	* that doesn't matter, though, since it is only
496	* pp_nextstate and we never return...
497	* ah yes, and I don't care anyways ;)
498	*/	718	{
499	PUTBACK;	719	if (!prev->stack)
500	PL_op = pp_entersub(aTHX);	720	allocate_stack (prev, 0);
501	SPAGAIN;
502		721
503	ENTER; /* necessary e.g. for dounwind */	722	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
		723	{
		724	setup_coro (next);
		725
		726	prev->stack->refcnt++;
		727	prev->stack->usecnt++;
		728	next->stack = prev->stack;
		729	next->gencnt = prev->gencnt;
		730	}
		731	else
		732	{
		733	allocate_stack (next, 1);
		734	coro_create (&(next->stack->cctx),
		735	setup_coro, (void *)next,
		736	next->stack->sptr, labs (next->stack->ssize));
		737	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		738	}
		739	}
		740	else
		741	setup_coro (next);
504	}	742	}
505	}	743	}
		744
		745	next->cursp = stacklevel;
506	}	746	}
507		747
508	MODULE = Coro::State PACKAGE = Coro::State	748	MODULE = Coro::State PACKAGE = Coro::State
509		749
510	PROTOTYPES: ENABLE	750	PROTOTYPES: ENABLE
511		751
512	BOOT:	752	BOOT:
		753	{ /* {} necessary for stoopid perl-5.6.x */
		754	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
		755	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
513	HV * stash = gv_stashpvn("Coro::State", 10, TRUE);	756	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
514		757
515	newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV));	758	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
516	newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV));	759	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
517	newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV));	760	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
		761	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
518		762
519	if (!padlist_cache)	763	if (!padlist_cache)
520	padlist_cache = newHV ();	764	padlist_cache = newHV ();
		765
		766	main_mainstack = PL_mainstack;
		767	}
521		768
522	Coro::State	769	Coro::State
523	_newprocess(args)	770	_newprocess(args)
524	SV * args	771	SV * args
525	PROTOTYPE: $	772	PROTOTYPE: $
…		…
529	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	776	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
530	croak ("Coro::State::_newprocess expects an arrayref");	777	croak ("Coro::State::_newprocess expects an arrayref");
531		778
532	New (0, coro, 1, struct coro);	779	New (0, coro, 1, struct coro);
533		780
		781	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
534	coro->mainstack = 0; /* actual work is done inside transfer */	782	coro->mainstack = 0; /* actual work is done inside transfer */
535	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	783	coro->stack = 0;
536		784
537	RETVAL = coro;	785	RETVAL = coro;
538	OUTPUT:	786	OUTPUT:
539	RETVAL	787	RETVAL
540		788
541	void	789	void
542	transfer(prev, next, flags = SAVE_DEFAV)	790	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)
543	Coro::State_or_hashref prev	791	Coro::State_or_hashref prev
544	Coro::State_or_hashref next	792	Coro::State_or_hashref next
545	int flags	793	int flags
546	PROTOTYPE: @	794	PROTOTYPE: @
547	CODE:	795	CODE:
548
549	transfer (aTHX_ prev, next, flags);	796	transfer (aTHX_ prev, next, flags);
550		797
551	void	798	void
552	DESTROY(coro)	799	DESTROY(coro)
553	Coro::State coro	800	Coro::State coro
554	CODE:	801	CODE:
555		802
556	if (coro->mainstack)	803	if (coro->mainstack && coro->mainstack != main_mainstack)
557	{	804	{
558	struct coro temp;	805	struct coro temp;
559		806
560	SAVE(aTHX_ (&temp), SAVE_ALL);	807	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
561	LOAD(aTHX_ coro);	808	LOAD(aTHX_ coro);
562		809
563	destroy_stacks ();	810	destroy_stacks (aTHX);
564		811
565	LOAD((&temp)); /* this will get rid of defsv etc.. */	812	LOAD((&temp)); /* this will get rid of defsv etc.. */
		813
		814	coro->mainstack = 0;
566	}	815	}
		816
		817	deallocate_stack (coro);
567		818
568	Safefree (coro);	819	Safefree (coro);
569		820
570	void	821	void
571	flush()	822	flush()
…		…
574	flush_padlist_cache ();	825	flush_padlist_cache ();
575	#endif	826	#endif
576		827
577	MODULE = Coro::State PACKAGE = Coro::Cont	828	MODULE = Coro::State PACKAGE = Coro::Cont
578		829
579	# this is dirty and should be in it's own .xs	830	# this is slightly dirty
580		831
581	void	832	void
582	result(...)	833	yield(...)
583	PROTOTYPE: @	834	PROTOTYPE: @
584	CODE:	835	CODE:
585	static SV *returnstk;	836	static SV *returnstk;
586	SV *sv;	837	SV *sv;
587	AV *defav = GvAV (PL_defgv);	838	AV *defav = GvAV (PL_defgv);
588	struct coro prev, next;	839	struct coro prev, next;
589		840
590	if (!returnstk)	841	if (!returnstk)
591	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	842	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));
592		843
593	/* set up @_ */	844	/* set up @_ -- ugly */
594	av_clear (defav);	845	av_clear (defav);
595	av_fill (defav, items - 1);	846	av_fill (defav, items - 1);
596	while (items--)	847	while (items--)
597	av_store (defav, items, SvREFCNT_inc (ST(items)));	848	av_store (defav, items, SvREFCNT_inc (ST(items)));
598		849
599	mg_get (returnstk); /* isn't documentation wrong for mg_get? */	850	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
600	sv = av_pop ((AV *)SvRV (returnstk));	851	sv = av_pop ((AV *)SvRV (returnstk));
601	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	852	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
602	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	853	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
603	SvREFCNT_dec (sv);	854	SvREFCNT_dec (sv);
		855
604	transfer(prev, next, 0);	856	transfer(aTHX_ prev, next, 0);
605		857

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Comparing Coro/Coro/State.xs (file contents): Revision 1.8 by root, Thu Jul 19 04:13:22 2001 UTC vs. Revision 1.16 by root, Wed Jul 25 04:26:55 2001 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.8 by root, Thu Jul 19 04:13:22 2001 UTC vs.
Revision 1.16 by root, Wed Jul 25 04:26:55 2001 UTC