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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.7 by root, Thu Jul 19 02:45:09 2001 UTC vs.
Revision 1.19 by root, Sun Jul 29 01:11:41 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 SAVE_DEFAV 0x00000001	36	#define SUB_INIT "Coro::State::initialize"
14	#define SAVE_DEFSV 0x00000002	37	#define UCORO_STATE "_coro_state"
15	#define SAVE_ERRSV 0x00000004
16		38
17	#define SAVE_ALL -1	39	/* The next macro should delcare a variable stacklevel that contains and approximation
		40	* to the current C stack pointer. It's property is that it changes with each call
		41	* and should be unique. */
		42	#define dSTACKLEVEL void *stacklevel = &stacklevel
		43
		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;
18		57
19	struct coro {	58	struct coro {
		59	/* the optional C context */
		60	coro_stack *stack;
		61	void *cursp;
		62	int gencnt;
		63
20	/* optionally saved, might be zero */	64	/* optionally saved, might be zero */
21	AV *defav;	65	AV *defav;
22	SV *defsv;	66	SV *defsv;
23	SV *errsv;	67	SV *errsv;
24		68
25	/* saved global state not related to stacks */	69	/* saved global state not related to stacks */
26	U8 dowarn;	70	U8 dowarn;
		71	I32 in_eval;
27		72
28	/* the stacks and related info (callchain etc..) */	73	/* the stacks and related info (callchain etc..) */
29	PERL_SI *curstackinfo;	74	PERL_SI *curstackinfo;
30	AV *curstack;	75	AV *curstack;
31	AV *mainstack;	76	AV *mainstack;
49	I32 savestack_max;	94	I32 savestack_max;
50	OP **retstack;	95	OP **retstack;
51	I32 retstack_ix;	96	I32 retstack_ix;
52	I32 retstack_max;	97	I32 retstack_max;
53	COP *curcop;	98	COP *curcop;
		99	JMPENV *top_env;
54		100
55	/* data associated with this coroutine (initial args) */	101	/* data associated with this coroutine (initial args) */
56	AV *args;	102	AV *args;
57	};	103	};
58		104
59	typedef struct coro *Coro__State;	105	typedef struct coro *Coro__State;
60	typedef struct coro *Coro__State_or_hashref;	106	typedef struct coro *Coro__State_or_hashref;
61		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;
62	static HV *padlist_cache;	112	static HV *padlist_cache;
63		113
64	/* mostly copied from op.c:cv_clone2 */	114	/* mostly copied from op.c:cv_clone2 */
65	STATIC AV *	115	STATIC AV *
66	clone_padlist (AV *protopadlist)	116	clone_padlist (AV *protopadlist)
…		…
229	#endif	279	#endif
230		280
231	#define SB do {	281	#define SB do {
232	#define SE } while (0)	282	#define SE } while (0)
233		283
234	#define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE	284	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE
235	#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
236		286
237	#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
238		288
239	static void	289	static void
240	load_state(pTHX_ Coro__State c)	290	load_state(pTHX_ Coro__State c)
241	{	291	{
242	PL_dowarn = c->dowarn;	292	PL_dowarn = c->dowarn;
		293	PL_in_eval = c->in_eval;
243		294
244	PL_curstackinfo = c->curstackinfo;	295	PL_curstackinfo = c->curstackinfo;
245	PL_curstack = c->curstack;	296	PL_curstack = c->curstack;
246	PL_mainstack = c->mainstack;	297	PL_mainstack = c->mainstack;
247	PL_stack_sp = c->stack_sp;	298	PL_stack_sp = c->stack_sp;
…		…
264	PL_savestack_max = c->savestack_max;	315	PL_savestack_max = c->savestack_max;
265	PL_retstack = c->retstack;	316	PL_retstack = c->retstack;
266	PL_retstack_ix = c->retstack_ix;	317	PL_retstack_ix = c->retstack_ix;
267	PL_retstack_max = c->retstack_max;	318	PL_retstack_max = c->retstack_max;
268	PL_curcop = c->curcop;	319	PL_curcop = c->curcop;
		320	PL_top_env = c->top_env;
269		321
270	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	322	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
271	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	323	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
272	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	324	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
273		325
…		…
300	save_state(pTHX_ Coro__State c, int flags)	352	save_state(pTHX_ Coro__State c, int flags)
301	{	353	{
302	{	354	{
303	dSP;	355	dSP;
304	I32 cxix = cxstack_ix;	356	I32 cxix = cxstack_ix;
		357	PERL_CONTEXT *ccstk = cxstack;
305	PERL_SI *top_si = PL_curstackinfo;	358	PERL_SI *top_si = PL_curstackinfo;
306	PERL_CONTEXT *ccstk = cxstack;
307		359
308	/*	360	/*
309	* 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
310	* (and reinitialize) all cv's in the whole callchain :(	362	* (and reinitialize) all cv's in the whole callchain :(
311	*/	363	*/
312		364
313	PUSHs (Nullsv);	365	PUSHs (Nullsv);
314	/* this loop was inspired by pp_caller */	366	/* this loop was inspired by pp_caller */
315	for (;;)	367	for (;;)
316	{	368	{
317	do	369	do
318	{	370	{
319	PERL_CONTEXT *cx = &ccstk[cxix--];	371	PERL_CONTEXT *cx = &ccstk[cxix--];
320		372
321	if (CxTYPE(cx) == CXt_SUB)	373	if (CxTYPE(cx) == CXt_SUB)
322	{	374	{
…		…
361	}	413	}
362		414
363	PUTBACK;	415	PUTBACK;
364	}	416	}
365		417
366	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;
367	c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
368	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);
369		426
370	c->dowarn = PL_dowarn;	427	c->dowarn = PL_dowarn;
		428	c->in_eval = PL_in_eval;
371		429
372	c->curstackinfo = PL_curstackinfo;	430	c->curstackinfo = PL_curstackinfo;
373	c->curstack = PL_curstack;	431	c->curstack = PL_curstack;
374	c->mainstack = PL_mainstack;	432	c->mainstack = PL_mainstack;
375	c->stack_sp = PL_stack_sp;	433	c->stack_sp = PL_stack_sp;
…		…
392	c->savestack_max = PL_savestack_max;	450	c->savestack_max = PL_savestack_max;
393	c->retstack = PL_retstack;	451	c->retstack = PL_retstack;
394	c->retstack_ix = PL_retstack_ix;	452	c->retstack_ix = PL_retstack_ix;
395	c->retstack_max = PL_retstack_max;	453	c->retstack_max = PL_retstack_max;
396	c->curcop = PL_curcop;	454	c->curcop = PL_curcop;
		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;
397	}	498	}
398		499
399	/*	500	/*
400	* destroy the stacks, the callchain etc...	501	* destroy the stacks, the callchain etc...
401	* still there is a memleak of 128 bytes...	502	* still there is a memleak of 128 bytes...
…		…
437	Safefree(PL_scopestack);	538	Safefree(PL_scopestack);
438	Safefree(PL_savestack);	539	Safefree(PL_savestack);
439	Safefree(PL_retstack);	540	Safefree(PL_retstack);
440	}	541	}
441		542
442	#define SUB_INIT "Coro::State::_newcoro"	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	/PL_curcop = 0;/
		609	/PL_in_eval = PL_in_eval;/ /* inherit */
		610	SvREFCNT_dec (GvAV (PL_defgv));
		611	GvAV (PL_defgv) = ctx->args;
		612
		613	SPAGAIN;
		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\|G_EVAL);
		622
		623	if (SvTRUE (ERRSV))
		624	croak (NULL);
		625	else
		626	croak ("FATAL: CCTXT coroutine returned!");
		627	}
		628	else
		629	{
		630	UNOP myop;
		631
		632	PL_op = (OP *)&myop;
		633
		634	Zero(&myop, 1, UNOP);
		635	myop.op_next = Nullop;
		636	myop.op_flags = OPf_WANT_VOID;
		637
		638	PUSHMARK(SP);
		639	XPUSHs (sub_init);
		640	/*
		641	* the next line is slightly wrong, as PL_op->op_next
		642	* is actually being executed so we skip the first op.
		643	* that doesn't matter, though, since it is only
		644	* pp_nextstate and we never return...
		645	* ah yes, and I don't care anyways ;)
		646	*/
		647	PUTBACK;
		648	PL_op = pp_entersub();
		649	SPAGAIN;
		650
		651	ENTER; /* necessary e.g. for dounwind */
		652	}
		653	}
		654
		655	static void
		656	continue_coro (void *arg)
		657	{
		658	/*
		659	* this is a _very_ stripped down perl interpreter ;)
		660	*/
		661	Coro__State ctx = (Coro__State)arg;
		662
		663	/FIXME//* must set up top_env here */
		664	ctx->cursp = 0;
		665	PL_op = PL_op->op_next;
		666	CALLRUNOPS(aTHX);
		667
		668	abort ();
		669	}
		670
		671	STATIC void
		672	transfer(pTHX_ struct coro prev, struct coro next, int flags)
		673	{
		674	dSP;
		675	dSTACKLEVEL;
		676
		677	if (prev != next)
		678	{
		679	if (next->mainstack)
		680	{
		681	SAVE (prev, flags);
		682	LOAD (next);
		683
		684	/* mark this state as in-use */
		685	next->mainstack = 0;
		686	next->tmps_ix = -2;
		687
		688	/* stacklevel changed? if yes, grab the stack for us! */
		689	if (flags & TRANSFER_SAVE_CCTXT)
		690	{
		691	if (!prev->stack)
		692	allocate_stack (prev, 0);
		693	else if (prev->cursp != stacklevel
		694	&& prev->stack->usecnt > 1)
		695	{
		696	prev->gencnt = ++prev->stack->gencnt;
		697	prev->stack->usecnt = 1;
		698	}
		699
		700	/* has our stack been invalidated? */
		701	if (next->stack && next->stack->gencnt != next->gencnt)
		702	{
		703	deallocate_stack (next);
		704	allocate_stack (next, 1);
		705	coro_create (&(next->stack->cctx),
		706	continue_coro, (void *)next,
		707	next->stack->sptr, labs (next->stack->ssize));
		708	}
		709
		710	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		711	}
		712
		713	}
		714	else if (next->tmps_ix == -2)
		715	croak ("tried to transfer to running coroutine");
		716	else
		717	{
		718	SAVE (prev, -1); /* first get rid of the old state */
		719
		720	if (flags & TRANSFER_SAVE_CCTXT)
		721	{
		722	if (!prev->stack)
		723	allocate_stack (prev, 0);
		724
		725	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
		726	{
		727	setup_coro (next);
		728
		729	prev->stack->refcnt++;
		730	prev->stack->usecnt++;
		731	next->stack = prev->stack;
		732	next->gencnt = prev->gencnt;
		733	}
		734	else
		735	{
		736	allocate_stack (next, 1);
		737	coro_create (&(next->stack->cctx),
		738	setup_coro, (void *)next,
		739	next->stack->sptr, labs (next->stack->ssize));
		740	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		741	}
		742	}
		743	else
		744	setup_coro (next);
		745	}
		746	}
		747
		748	next->cursp = stacklevel;
		749	}
443		750
444	MODULE = Coro::State PACKAGE = Coro::State	751	MODULE = Coro::State PACKAGE = Coro::State
445		752
446	PROTOTYPES: ENABLE	753	PROTOTYPES: ENABLE
447		754
448	BOOT:	755	BOOT:
		756	{ /* {} necessary for stoopid perl-5.6.x */
		757	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
		758	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
449	HV * stash = gv_stashpvn("Coro::State", 10, TRUE);	759	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
450		760
451	newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV));	761	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
452	newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV));	762	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
453	newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV));	763	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
		764	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
454		765
455	if (!padlist_cache)	766	if (!padlist_cache)
456	padlist_cache = newHV ();	767	padlist_cache = newHV ();
		768
		769	main_mainstack = PL_mainstack;
		770	}
457		771
458	Coro::State	772	Coro::State
459	_newprocess(args)	773	_newprocess(args)
460	SV * args	774	SV * args
461	PROTOTYPE: $	775	PROTOTYPE: $
…		…
465	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	779	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
466	croak ("Coro::State::_newprocess expects an arrayref");	780	croak ("Coro::State::_newprocess expects an arrayref");
467		781
468	New (0, coro, 1, struct coro);	782	New (0, coro, 1, struct coro);
469		783
		784	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
470	coro->mainstack = 0; /* actual work is done inside transfer */	785	coro->mainstack = 0; /* actual work is done inside transfer */
471	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	786	coro->stack = 0;
472		787
473	RETVAL = coro;	788	RETVAL = coro;
474	OUTPUT:	789	OUTPUT:
475	RETVAL	790	RETVAL
476		791
477	void	792	void
478	transfer(prev, next, flags = SAVE_DEFAV)	793	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)
479	Coro::State_or_hashref prev	794	Coro::State_or_hashref prev
480	Coro::State_or_hashref next	795	Coro::State_or_hashref next
481	int flags	796	int flags
		797	PROTOTYPE: @
482	CODE:	798	CODE:
483		799	transfer (aTHX_ prev, next, flags);
484	if (prev != next)
485	{
486	/*
487	* this could be done in newprocess which would lead to
488	* extremely elegant and fast (just SAVE/LOAD)
489	* code here, but lazy allocation of stacks has also
490	* some virtues and the overhead of the if() is nil.
491	*/
492	if (next->mainstack)
493	{
494	SAVE (prev, flags);
495	LOAD (next);
496	/* mark this state as in-use */
497	next->mainstack = 0;
498	next->tmps_ix = -2;
499	}
500	else if (next->tmps_ix == -2)
501	{
502	croak ("tried to transfer to running coroutine");
503	}
504	else
505	{
506	/*
507	* emulate part of the perl startup here.
508	*/
509	UNOP myop;
510
511	SAVE (prev, -1); /* first get rid of the old state */
512
513	init_stacks (); /* from perl.c */
514	SPAGAIN;
515
516	PL_op = (OP *)&myop;
517	/PL_curcop = 0;/
518	SvREFCNT_dec (GvAV (PL_defgv));
519	GvAV (PL_defgv) = next->args;
520
521	Zero(&myop, 1, UNOP);
522	myop.op_next = Nullop;
523	myop.op_flags = OPf_WANT_VOID;
524
525	PUSHMARK(SP);
526	XPUSHs ((SV*)get_cv(SUB_INIT, TRUE));
527	/*
528	* the next line is slightly wrong, as PL_op->op_next
529	* is actually being executed so we skip the first op.
530	* that doesn't matter, though, since it is only
531	* pp_nextstate and we never return...
532	* ah yes, and I don't care anyways ;)
533	*/
534	PUTBACK;
535	PL_op = pp_entersub(aTHX);
536	SPAGAIN;
537
538	ENTER; /* necessary e.g. for dounwind */
539	}
540	}
541		800
542	void	801	void
543	DESTROY(coro)	802	DESTROY(coro)
544	Coro::State coro	803	Coro::State coro
545	CODE:	804	CODE:
546		805
547	if (coro->mainstack)	806	if (coro->mainstack && coro->mainstack != main_mainstack)
548	{	807	{
549	struct coro temp;	808	struct coro temp;
550		809
551	SAVE(aTHX_ (&temp), SAVE_ALL);	810	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
552	LOAD(aTHX_ coro);	811	LOAD(aTHX_ coro);
553		812
554	destroy_stacks ();	813	destroy_stacks (aTHX);
555		814
556	LOAD((&temp)); /* this will get rid of defsv etc.. */	815	LOAD((&temp)); /* this will get rid of defsv etc.. */
		816
		817	coro->mainstack = 0;
557	}	818	}
		819
		820	deallocate_stack (coro);
558		821
559	Safefree (coro);	822	Safefree (coro);
560		823
561	void	824	void
562	flush()	825	flush()
563	CODE:	826	CODE:
564	#ifdef MAY_FLUSH	827	#ifdef MAY_FLUSH
565	flush_padlist_cache ();	828	flush_padlist_cache ();
566	#endif	829	#endif
567		830
		831	MODULE = Coro::State PACKAGE = Coro::Cont
568		832
		833	# this is slightly dirty
		834
		835	void
		836	yield(...)
		837	PROTOTYPE: @
		838	CODE:
		839	static SV *returnstk;
		840	SV *sv;
		841	AV *defav = GvAV (PL_defgv);
		842	struct coro prev, next;
		843
		844	if (!returnstk)
		845	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));
		846
		847	/* set up @_ -- ugly */
		848	av_clear (defav);
		849	av_fill (defav, items - 1);
		850	while (items--)
		851	av_store (defav, items, SvREFCNT_inc (ST(items)));
		852
		853	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
		854	sv = av_pop ((AV *)SvRV (returnstk));
		855	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
		856	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
		857	SvREFCNT_dec (sv);
		858
		859	transfer(aTHX_ prev, next, 0);
		860

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.7 by root, Thu Jul 19 02:45:09 2001 UTC vs. Revision 1.19 by root, Sun Jul 29 01:11:41 2001 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.7 by root, Thu Jul 19 02:45:09 2001 UTC vs.
Revision 1.19 by root, Sun Jul 29 01:11:41 2001 UTC