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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.10 by root, Sat Jul 21 04:19:34 2001 UTC vs.
Revision 1.18 by root, Thu Jul 26 03:46:15 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::coroutine_initialization"	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;
20		57
21	struct coro {	58	struct coro {
		59	/* the optional C context */
		60	coro_stack *stack;
		61	void *cursp;
		62	int gencnt;
		63
22	/* optionally saved, might be zero */	64	/* optionally saved, might be zero */
23	AV *defav;	65	AV *defav;
24	SV *defsv;	66	SV *defsv;
25	SV *errsv;	67	SV *errsv;
26		68
51	I32 savestack_max;	93	I32 savestack_max;
52	OP **retstack;	94	OP **retstack;
53	I32 retstack_ix;	95	I32 retstack_ix;
54	I32 retstack_max;	96	I32 retstack_max;
55	COP *curcop;	97	COP *curcop;
		98	JMPENV start_env;
		99	JMPENV *top_env;
56		100
57	/* data associated with this coroutine (initial args) */	101	/* data associated with this coroutine (initial args) */
58	AV *args;	102	AV *args;
59	};	103	};
60		104
61	typedef struct coro *Coro__State;	105	typedef struct coro *Coro__State;
62	typedef struct coro *Coro__State_or_hashref;	106	typedef struct coro *Coro__State_or_hashref;
63		107
		108	static AV main_mainstack; / used to differentiate between $main and others */
		109	static HV *coro_state_stash;
		110	static SV *ucoro_state_sv;
		111	static U32 ucoro_state_hash;
64	static HV *padlist_cache;	112	static HV *padlist_cache;
65		113
66	/* mostly copied from op.c:cv_clone2 */	114	/* mostly copied from op.c:cv_clone2 */
67	STATIC AV *	115	STATIC AV *
68	clone_padlist (AV *protopadlist)	116	clone_padlist (AV *protopadlist)
…		…
231	#endif	279	#endif
232		280
233	#define SB do {	281	#define SB do {
234	#define SE } while (0)	282	#define SE } while (0)
235		283
236	#define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE	284	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE
237	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE	285	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE
238		286
239	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	287	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE
240		288
241	static void	289	static void
242	load_state(pTHX_ Coro__State c)	290	load_state(pTHX_ Coro__State c)
…		…
266	PL_savestack_max = c->savestack_max;	314	PL_savestack_max = c->savestack_max;
267	PL_retstack = c->retstack;	315	PL_retstack = c->retstack;
268	PL_retstack_ix = c->retstack_ix;	316	PL_retstack_ix = c->retstack_ix;
269	PL_retstack_max = c->retstack_max;	317	PL_retstack_max = c->retstack_max;
270	PL_curcop = c->curcop;	318	PL_curcop = c->curcop;
		319	PL_start_env = c->start_env;
		320	PL_top_env = c->top_env;
271		321
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	322	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	323	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	324	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
275		325
…		…
302	save_state(pTHX_ Coro__State c, int flags)	352	save_state(pTHX_ Coro__State c, int flags)
303	{	353	{
304	{	354	{
305	dSP;	355	dSP;
306	I32 cxix = cxstack_ix;	356	I32 cxix = cxstack_ix;
		357	PERL_CONTEXT *ccstk = cxstack;
307	PERL_SI *top_si = PL_curstackinfo;	358	PERL_SI *top_si = PL_curstackinfo;
308	PERL_CONTEXT *ccstk = cxstack;
309		359
310	/*	360	/*
311	* the worst thing you can imagine happens first - we have to save	361	* the worst thing you can imagine happens first - we have to save
312	* (and reinitialize) all cv's in the whole callchain :(	362	* (and reinitialize) all cv's in the whole callchain :(
313	*/	363	*/
314		364
315	PUSHs (Nullsv);	365	PUSHs (Nullsv);
316	/* this loop was inspired by pp_caller */	366	/* this loop was inspired by pp_caller */
317	for (;;)	367	for (;;)
318	{	368	{
319	do	369	do
320	{	370	{
321	PERL_CONTEXT *cx = &ccstk[cxix--];	371	PERL_CONTEXT *cx = &ccstk[cxix--];
322		372
323	if (CxTYPE(cx) == CXt_SUB)	373	if (CxTYPE(cx) == CXt_SUB)
324	{	374	{
…		…
363	}	413	}
364		414
365	PUTBACK;	415	PUTBACK;
366	}	416	}
367		417
368	c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
369	c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
370	c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		421
		422	/* I have not the slightest idea of why av_reify is necessary */
		423	/* but if it's missing the defav contents magically get replaced sometimes */
		424	if (c->defav)
		425	av_reify (c->defav);
371		426
372	c->dowarn = PL_dowarn;	427	c->dowarn = PL_dowarn;
373		428
374	c->curstackinfo = PL_curstackinfo;	429	c->curstackinfo = PL_curstackinfo;
375	c->curstack = PL_curstack;	430	c->curstack = PL_curstack;
…		…
394	c->savestack_max = PL_savestack_max;	449	c->savestack_max = PL_savestack_max;
395	c->retstack = PL_retstack;	450	c->retstack = PL_retstack;
396	c->retstack_ix = PL_retstack_ix;	451	c->retstack_ix = PL_retstack_ix;
397	c->retstack_max = PL_retstack_max;	452	c->retstack_max = PL_retstack_max;
398	c->curcop = PL_curcop;	453	c->curcop = PL_curcop;
		454	c->start_env = PL_start_env;
		455	c->top_env = PL_top_env;
		456	}
		457
		458	/*
		459	* allocate various perl stacks. This is an exact copy
		460	* of perl.c:init_stacks, except that it uses less memory
		461	* on the assumption that coroutines do not usually need
		462	* a lot of stackspace.
		463	*/
		464	STATIC void
		465	coro_init_stacks (pTHX)
		466	{
		467	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
		468	PL_curstackinfo->si_type = PERLSI_MAIN;
		469	PL_curstack = PL_curstackinfo->si_stack;
		470	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
		471
		472	PL_stack_base = AvARRAY(PL_curstack);
		473	PL_stack_sp = PL_stack_base;
		474	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
		475
		476	New(50,PL_tmps_stack,96,SV*);
		477	PL_tmps_floor = -1;
		478	PL_tmps_ix = -1;
		479	PL_tmps_max = 96;
		480
		481	New(54,PL_markstack,16,I32);
		482	PL_markstack_ptr = PL_markstack;
		483	PL_markstack_max = PL_markstack + 16;
		484
		485	SET_MARK_OFFSET;
		486
		487	New(54,PL_scopestack,16,I32);
		488	PL_scopestack_ix = 0;
		489	PL_scopestack_max = 16;
		490
		491	New(54,PL_savestack,96,ANY);
		492	PL_savestack_ix = 0;
		493	PL_savestack_max = 96;
		494
		495	New(54,PL_retstack,8,OP*);
		496	PL_retstack_ix = 0;
		497	PL_retstack_max = 8;
399	}	498	}
400		499
401	/*	500	/*
402	* destroy the stacks, the callchain etc...	501	* destroy the stacks, the callchain etc...
403	* still there is a memleak of 128 bytes...	502	* still there is a memleak of 128 bytes...
…		…
439	Safefree(PL_scopestack);	538	Safefree(PL_scopestack);
440	Safefree(PL_savestack);	539	Safefree(PL_savestack);
441	Safefree(PL_retstack);	540	Safefree(PL_retstack);
442	}	541	}
443		542
		543	static void
		544	allocate_stack (Coro__State ctx, int alloc)
		545	{
		546	coro_stack *stack;
		547
		548	New (0, stack, 1, coro_stack);
		549
		550	stack->refcnt = 1;
		551	stack->usecnt = 1;
		552	stack->gencnt = ctx->gencnt = 0;
		553	if (alloc)
		554	{
		555	#ifdef HAVE_MMAP
		556	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
		557	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);
		558	if (stack->sptr == (void *)-1)
		559	#endif
		560	{
		561	/FIXME//D//* reasonable stack size! */
		562	stack->ssize = -4096 * sizeof (long);
		563	New (0, stack->sptr, 4096, long);
		564	}
		565	}
		566	else
		567	stack->sptr = 0;
		568
		569	ctx->stack = stack;
		570	}
		571
		572	static void
		573	deallocate_stack (Coro__State ctx)
		574	{
		575	coro_stack *stack = ctx->stack;
		576
		577	ctx->stack = 0;
		578
		579	if (stack)
		580	{
		581	if (!--stack->refcnt)
		582	{
		583	#ifdef HAVE_MMAP
		584	if (stack->ssize > 0 && stack->sptr)
		585	munmap (stack->sptr, stack->ssize);
		586	else
		587	#else
		588	Safefree (stack->sptr);
		589	#endif
		590	Safefree (stack);
		591	}
		592	else if (ctx->gencnt == stack->gencnt)
		593	--stack->usecnt;
		594	}
		595	}
		596
		597	static void
		598	setup_coro (void *arg)
		599	{
		600	/*
		601	* emulate part of the perl startup here.
		602	*/
		603	dSP;
		604	Coro__State ctx = (Coro__State)arg;
		605	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
		606
		607	coro_init_stacks (aTHX);
		608	JMPENV_BOOTSTRAP;
		609	SPAGAIN;
		610
		611	/PL_curcop = 0;/
		612	SvREFCNT_dec (GvAV (PL_defgv));
		613	GvAV (PL_defgv) = ctx->args;
		614
		615	if (ctx->stack)
		616	{
		617	ctx->cursp = 0;
		618
		619	PUSHMARK(SP);
		620	PUTBACK;
		621	(void) call_sv (sub_init, G_VOID\|G_NOARGS);
		622	croak ("FATAL: CCTXT coroutine returned!");
		623	}
		624	else
		625	{
		626	UNOP myop;
		627
		628	PL_op = (OP *)&myop;
		629
		630	Zero(&myop, 1, UNOP);
		631	myop.op_next = Nullop;
		632	myop.op_flags = OPf_WANT_VOID;
		633
		634	PUSHMARK(SP);
		635	XPUSHs (sub_init);
		636	/*
		637	* the next line is slightly wrong, as PL_op->op_next
		638	* is actually being executed so we skip the first op.
		639	* that doesn't matter, though, since it is only
		640	* pp_nextstate and we never return...
		641	* ah yes, and I don't care anyways ;)
		642	*/
		643	PUTBACK;
		644	PL_op = pp_entersub();
		645	SPAGAIN;
		646
		647	ENTER; /* necessary e.g. for dounwind */
		648	}
		649	}
		650
		651	static void
		652	continue_coro (void *arg)
		653	{
		654	/*
		655	* this is a _very_ stripped down perl interpreter ;)
		656	*/
		657	Coro__State ctx = (Coro__State)arg;
		658
		659	ctx->cursp = 0;
		660	PL_op = PL_op->op_next;
		661	CALLRUNOPS(aTHX);
		662	/NORETURN/
		663	abort ();
		664	}
		665
444	STATIC void	666	STATIC void
445	transfer(pTHX_ struct coro prev, struct coro next, int flags)	667	transfer(pTHX_ struct coro prev, struct coro next, int flags)
446	{	668	{
447	dSP;	669	dSP;
		670	dSTACKLEVEL;
448		671
449	if (prev != next)	672	if (prev != next)
450	{	673	{
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)	674	if (next->mainstack)
458	{	675	{
459	SAVE (prev, flags);	676	SAVE (prev, flags);
460	LOAD (next);	677	LOAD (next);
		678
461	/* mark this state as in-use */	679	/* mark this state as in-use */
462	next->mainstack = 0;	680	next->mainstack = 0;
463	next->tmps_ix = -2;	681	next->tmps_ix = -2;
		682
		683	/* stacklevel changed? if yes, grab the stack for us! */
		684	if (flags & TRANSFER_SAVE_CCTXT)
		685	{
		686	if (!prev->stack)
		687	allocate_stack (prev, 0);
		688	else if (prev->cursp != stacklevel
		689	&& prev->stack->usecnt > 1)
		690	{
		691	prev->gencnt = ++prev->stack->gencnt;
		692	prev->stack->usecnt = 1;
		693	}
		694
		695	/* has our stack been invalidated? */
		696	if (next->stack && next->stack->gencnt != next->gencnt)
		697	{
		698	deallocate_stack (next);
		699	allocate_stack (next, 1);
		700	coro_create (&(next->stack->cctx),
		701	continue_coro, (void *)next,
		702	next->stack->sptr, labs (next->stack->ssize));
		703	}
		704
		705	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		706	}
		707
464	}	708	}
465	else if (next->tmps_ix == -2)	709	else if (next->tmps_ix == -2)
466	{
467	croak ("tried to transfer to running coroutine");	710	croak ("tried to transfer to running coroutine");
468	}
469	else	711	else
470	{	712	{
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 */	713	SAVE (prev, -1); /* first get rid of the old state */
477		714
478	init_stacks (); /* from perl.c */	715	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	*/	716	{
499	PUTBACK;	717	if (!prev->stack)
500	PL_op = pp_entersub(aTHX);	718	allocate_stack (prev, 0);
501	SPAGAIN;
502		719
503	ENTER; /* necessary e.g. for dounwind */	720	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
		721	{
		722	setup_coro (next);
		723
		724	prev->stack->refcnt++;
		725	prev->stack->usecnt++;
		726	next->stack = prev->stack;
		727	next->gencnt = prev->gencnt;
		728	}
		729	else
		730	{
		731	allocate_stack (next, 1);
		732	coro_create (&(next->stack->cctx),
		733	setup_coro, (void *)next,
		734	next->stack->sptr, labs (next->stack->ssize));
		735	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		736	}
		737	}
		738	else
		739	setup_coro (next);
504	}	740	}
505	}	741	}
		742
		743	next->cursp = stacklevel;
506	}	744	}
507		745
508	MODULE = Coro::State PACKAGE = Coro::State	746	MODULE = Coro::State PACKAGE = Coro::State
509		747
510	PROTOTYPES: ENABLE	748	PROTOTYPES: ENABLE
511		749
512	BOOT:	750	BOOT:
513	{ /* {} necessary for stoopid perl-5.6.x */	751	{ /* {} necessary for stoopid perl-5.6.x */
		752	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
		753	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
514	HV * stash = gv_stashpvn("Coro::State", 10, TRUE);	754	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
515		755
516	newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV));	756	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
517	newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV));	757	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
518	newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV));	758	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
		759	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
519		760
520	if (!padlist_cache)	761	if (!padlist_cache)
521	padlist_cache = newHV ();	762	padlist_cache = newHV ();
		763
		764	main_mainstack = PL_mainstack;
522	}	765	}
523		766
524	Coro::State	767	Coro::State
525	_newprocess(args)	768	_newprocess(args)
526	SV * args	769	SV * args
…		…
531	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	774	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
532	croak ("Coro::State::_newprocess expects an arrayref");	775	croak ("Coro::State::_newprocess expects an arrayref");
533		776
534	New (0, coro, 1, struct coro);	777	New (0, coro, 1, struct coro);
535		778
		779	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
536	coro->mainstack = 0; /* actual work is done inside transfer */	780	coro->mainstack = 0; /* actual work is done inside transfer */
537	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	781	coro->stack = 0;
538		782
539	RETVAL = coro;	783	RETVAL = coro;
540	OUTPUT:	784	OUTPUT:
541	RETVAL	785	RETVAL
542		786
543	void	787	void
544	transfer(prev, next, flags = SAVE_DEFAV)	788	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)
545	Coro::State_or_hashref prev	789	Coro::State_or_hashref prev
546	Coro::State_or_hashref next	790	Coro::State_or_hashref next
547	int flags	791	int flags
548	PROTOTYPE: @	792	PROTOTYPE: @
549	CODE:	793	CODE:
550
551	transfer (aTHX_ prev, next, flags);	794	transfer (aTHX_ prev, next, flags);
552		795
553	void	796	void
554	DESTROY(coro)	797	DESTROY(coro)
555	Coro::State coro	798	Coro::State coro
556	CODE:	799	CODE:
557		800
558	if (coro->mainstack)	801	if (coro->mainstack && coro->mainstack != main_mainstack)
559	{	802	{
560	struct coro temp;	803	struct coro temp;
561		804
562	SAVE(aTHX_ (&temp), SAVE_ALL);	805	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
563	LOAD(aTHX_ coro);	806	LOAD(aTHX_ coro);
564		807
565	destroy_stacks ();	808	destroy_stacks (aTHX);
566		809
567	LOAD((&temp)); /* this will get rid of defsv etc.. */	810	LOAD((&temp)); /* this will get rid of defsv etc.. */
		811
		812	coro->mainstack = 0;
568	}	813	}
		814
		815	deallocate_stack (coro);
569		816
570	Safefree (coro);	817	Safefree (coro);
571		818
572	void	819	void
573	flush()	820	flush()
…		…
576	flush_padlist_cache ();	823	flush_padlist_cache ();
577	#endif	824	#endif
578		825
579	MODULE = Coro::State PACKAGE = Coro::Cont	826	MODULE = Coro::State PACKAGE = Coro::Cont
580		827
581	# this is dirty and should be in it's own .xs	828	# this is slightly dirty
582		829
583	void	830	void
584	result(...)	831	yield(...)
585	PROTOTYPE: @	832	PROTOTYPE: @
586	CODE:	833	CODE:
587	static SV *returnstk;	834	static SV *returnstk;
588	SV *sv;	835	SV *sv;
589	AV *defav = GvAV (PL_defgv);	836	AV *defav = GvAV (PL_defgv);
590	struct coro prev, next;	837	struct coro prev, next;
591		838
592	if (!returnstk)	839	if (!returnstk)
593	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	840	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));
594		841
595	/* set up @_ */	842	/* set up @_ -- ugly */
596	av_clear (defav);	843	av_clear (defav);
597	av_fill (defav, items - 1);	844	av_fill (defav, items - 1);
598	while (items--)	845	while (items--)
599	av_store (defav, items, SvREFCNT_inc (ST(items)));	846	av_store (defav, items, SvREFCNT_inc (ST(items)));
600		847
601	mg_get (returnstk); /* isn't documentation wrong for mg_get? */	848	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
602	sv = av_pop ((AV *)SvRV (returnstk));	849	sv = av_pop ((AV *)SvRV (returnstk));
603	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	850	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
604	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	851	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
605	SvREFCNT_dec (sv);	852	SvREFCNT_dec (sv);
		853
606	transfer(prev, next, 0);	854	transfer(aTHX_ prev, next, 0);
607		855

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Comparing Coro/Coro/State.xs (file contents): Revision 1.10 by root, Sat Jul 21 04:19:34 2001 UTC vs. Revision 1.18 by root, Thu Jul 26 03:46:15 2001 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.10 by root, Sat Jul 21 04:19:34 2001 UTC vs.
Revision 1.18 by root, Thu Jul 26 03:46:15 2001 UTC