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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.82 by root, Mon Nov 20 22:26:16 2006 UTC vs.
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
27	# ifndef IS_PADCONST	25	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	26	# define IS_PADCONST(v) 0
29	# endif	27	# endif
30	#endif	28	#endif
31		29
		30	#include <stdio.h>
32	#include <errno.h>	31	#include <errno.h>
33		32
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	33	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	34	# undef STACKGUARD
36	#endif	35	#endif
…		…
57	# else	56	# else
58	# define BOOT_PAGESIZE	57	# define BOOT_PAGESIZE
59	# endif	58	# endif
60	#endif	59	#endif
61		60
62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64
65	/* The next macro should declare a variable stacklevel that contains and approximation	61	/* The next macro should declare a variable stacklevel that contains and approximation
66	* to the current C stack pointer. Its property is that it changes with each call	62	* to the current C stack pointer. Its property is that it changes with each call
67	* and should be unique. */	63	* and should be unique. */
		64	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	65	#define STACKLEVEL ((void *)&stacklevel)
69		66
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	67	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		68
72	#define labs(l) ((l) >= 0 ? (l) : -(l))
73
74	#include "CoroAPI.h"	69	#include "CoroAPI.h"
		70
		71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
75		72
76	#ifdef USE_ITHREADS	73	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	74	static perl_mutex coro_mutex;
78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	75	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	76	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
82	# define UNLOCK (void)0	79	# define UNLOCK (void)0
83	#endif	80	#endif
84		81
85	static struct CoroAPI coroapi;	82	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	83	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	84	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	85	static SV coro_mortal; / will be freed after next transfer */
91		86
92	/* this is actually not only the c stack but also c registers etc... */	87	/* this is a structure representing a c-level coroutine */
93	typedef struct {	88	typedef struct coro_stack {
94	int refcnt; /* pointer reference counter */	89	struct coro_stack *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		90
98	coro_context cctx;	91	/* the stack */
99
100	void *sptr;	92	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	93	long ssize; /* positive == mmap, otherwise malloc */
		94
		95	/* cpu state */
		96	void idle_sp; / sp of top-level transfer/schedule/cede call */
		97	JMPENV *top_env;
		98	coro_context cctx;
102	} coro_stack;	99	} coro_stack;
103		100
		101	/* this is a structure representing a perl-level coroutine */
104	struct coro {	102	struct coro {
105	/* the optional C context */	103	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	104	coro_stack *stack;
107	void *cursp;	105
		106	/* data associated with this coroutine (initial args) */
		107	AV *args;
108	int gencnt;	108	int refcnt;
109		109
110	/* optionally saved, might be zero */	110	/* optionally saved, might be zero */
111	AV *defav;	111	AV *defav;
112	SV *defsv;	112	SV *defsv;
113	SV *errsv;	113	SV *errsv;
…		…
143	OP **retstack;	143	OP **retstack;
144	I32 retstack_ix;	144	I32 retstack_ix;
145	I32 retstack_max;	145	I32 retstack_max;
146	PMOP *curpm;	146	PMOP *curpm;
147	COP *curcop;	147	COP *curcop;
148	JMPENV *top_env;
149		148
150	/* data associated with this coroutine (initial args) */	149	/* coro process data */
151	AV *args;	150	int prio;
152	};	151	};
153		152
154	typedef struct coro *Coro__State;	153	typedef struct coro *Coro__State;
155	typedef struct coro *Coro__State_or_hashref;	154	typedef struct coro *Coro__State_or_hashref;
156		155
157	static AV *	156	static AV *
158	coro_clone_padlist (pTHX_ CV *cv)	157	coro_clone_padlist (CV *cv)
159	{	158	{
160	AV *padlist = CvPADLIST (cv);	159	AV *padlist = CvPADLIST (cv);
161	AV newpadlist, newpad;	160	AV newpadlist, newpad;
162		161
163	newpadlist = newAV ();	162	newpadlist = newAV ();
…		…
175		174
176	return newpadlist;	175	return newpadlist;
177	}	176	}
178		177
179	static void	178	static void
180	free_padlist (pTHX_ AV *padlist)	179	free_padlist (AV *padlist)
181	{	180	{
182	/* may be during global destruction */	181	/* may be during global destruction */
183	if (SvREFCNT (padlist))	182	if (SvREFCNT (padlist))
184	{	183	{
185	I32 i = AvFILLp (padlist);	184	I32 i = AvFILLp (padlist);
…		…
206	AV *padlist;	205	AV *padlist;
207	AV av = (AV )mg->mg_obj;	206	AV av = (AV )mg->mg_obj;
208		207
209	/* casting is fun. */	208	/* casting is fun. */
210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
211	free_padlist (aTHX_ padlist);	210	free_padlist (padlist);
212		211
213	SvREFCNT_dec (av);	212	SvREFCNT_dec (av);
214		213
215	return 0;	214	return 0;
216	}	215	}
…		…
219		218
220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
221		220
222	/* the next two functions merely cache the padlists */	221	/* the next two functions merely cache the padlists */
223	static void	222	static void
224	get_padlist (pTHX_ CV *cv)	223	get_padlist (CV *cv)
225	{	224	{
226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
227		226
228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
230	else	229	else
231	{	230	{
232	#if 0	231	#if 0
233	/* this should work - but it doesn't :( */	232	/* this is probably cleaner, but also slower? */
234	CV *cp = Perl_cv_clone (aTHX_ cv);	233	CV *cp = Perl_cv_clone (cv);
235	CvPADLIST (cv) = CvPADLIST (cp);	234	CvPADLIST (cv) = CvPADLIST (cp);
236	CvPADLIST (cp) = 0;	235	CvPADLIST (cp) = 0;
237	SvREFCNT_dec (cp);	236	SvREFCNT_dec (cp);
238	#else	237	#else
239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	238	CvPADLIST (cv) = coro_clone_padlist (cv);
240	#endif	239	#endif
241	}	240	}
242	}	241	}
243		242
244	static void	243	static void
245	put_padlist (pTHX_ CV *cv)	244	put_padlist (CV *cv)
246	{	245	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
248		247
249	if (!mg)	248	if (!mg)
250	{	249	{
…		…
258	}	257	}
259		258
260	#define SB do {	259	#define SB do {
261	#define SE } while (0)	260	#define SE } while (0)
262		261
263	#define LOAD(state) load_state(aTHX_ (state));	262	#define LOAD(state) load_state((state));
264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	263	#define SAVE(state,flags) save_state((state),(flags));
265		264
266	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
267		266
268	static void	267	static void
269	load_state(pTHX_ Coro__State c)	268	load_state(Coro__State c)
270	{	269	{
271	PL_dowarn = c->dowarn;	270	PL_dowarn = c->dowarn;
272	PL_in_eval = c->in_eval;	271	PL_in_eval = c->in_eval;
273		272
274	PL_curstackinfo = c->curstackinfo;	273	PL_curstackinfo = c->curstackinfo;
…		…
299	PL_retstack_ix = c->retstack_ix;	298	PL_retstack_ix = c->retstack_ix;
300	PL_retstack_max = c->retstack_max;	299	PL_retstack_max = c->retstack_max;
301	#endif	300	#endif
302	PL_curpm = c->curpm;	301	PL_curpm = c->curpm;
303	PL_curcop = c->curcop;	302	PL_curcop = c->curcop;
304	PL_top_env = c->top_env;
305		303
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
309		307
…		…
316	{	314	{
317	AV padlist = (AV )POPs;	315	AV padlist = (AV )POPs;
318		316
319	if (padlist)	317	if (padlist)
320	{	318	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	319	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	320	CvPADLIST(cv) = padlist;
323	}	321	}
324		322
325	++CvDEPTH(cv);	323	++CvDEPTH(cv);
326	}	324	}
…		…
328	PUTBACK;	326	PUTBACK;
329	}	327	}
330	}	328	}
331		329
332	static void	330	static void
333	save_state(pTHX_ Coro__State c, int flags)	331	save_state(Coro__State c, int flags)
334	{	332	{
335	{	333	{
336	dSP;	334	dSP;
337	I32 cxix = cxstack_ix;	335	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	336	PERL_CONTEXT *ccstk = cxstack;
…		…
366	}	364	}
367		365
368	PUSHs ((SV *)CvPADLIST(cv));	366	PUSHs ((SV *)CvPADLIST(cv));
369	PUSHs ((SV *)cv);	367	PUSHs ((SV *)cv);
370		368
371	get_padlist (aTHX_ cv);	369	get_padlist (cv);
372	}	370	}
373	}	371	}
374	#ifdef CXt_FORMAT	372	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)	373	else if (CxTYPE(cx) == CXt_FORMAT)
376	{	374	{
…		…
427	c->retstack_ix = PL_retstack_ix;	425	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;	426	c->retstack_max = PL_retstack_max;
429	#endif	427	#endif
430	c->curpm = PL_curpm;	428	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;	429	c->curcop = PL_curcop;
432	c->top_env = PL_top_env;
433	}	430	}
434		431
435	/*	432	/*
436	* allocate various perl stacks. This is an exact copy	433	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	434	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	435	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	436	* not usually need a lot of stackspace.
440	*/	437	*/
441	static void	438	static void
442	coro_init_stacks (pTHX)	439	coro_init_stacks ()
443	{	440	{
444	LOCK;
445
446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	441	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
447	PL_curstackinfo->si_type = PERLSI_MAIN;	442	PL_curstackinfo->si_type = PERLSI_MAIN;
448	PL_curstack = PL_curstackinfo->si_stack;	443	PL_curstack = PL_curstackinfo->si_stack;
449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	444	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
450		445
…		…
476	#if PERL_VERSION < 9	471	#if PERL_VERSION < 9
477	New(54,PL_retstack,8,OP*);	472	New(54,PL_retstack,8,OP*);
478	PL_retstack_ix = 0;	473	PL_retstack_ix = 0;
479	PL_retstack_max = 8;	474	PL_retstack_max = 8;
480	#endif	475	#endif
481
482	UNLOCK;
483	}	476	}
484		477
485	/*	478	/*
486	* destroy the stacks, the callchain etc...	479	* destroy the stacks, the callchain etc...
487	*/	480	*/
488	static void	481	static void
489	destroy_stacks(pTHX)	482	destroy_stacks()
490	{	483	{
491	if (!IN_DESTRUCT)	484	if (!IN_DESTRUCT)
492	{	485	{
493	/* is this ugly, I ask? */	486	/* is this ugly, I ask? */
494	LEAVE_SCOPE (0);	487	LEAVE_SCOPE (0);
…		…
531	Safefree (PL_retstack);	524	Safefree (PL_retstack);
532	#endif	525	#endif
533	}	526	}
534		527
535	static void	528	static void
536	allocate_stack (Coro__State ctx, int alloc)	529	setup_coro (struct coro *coro)
537	{
538	coro_stack *stack;
539
540	New (0, stack, 1, coro_stack);
541
542	stack->refcnt = 1;
543	stack->usecnt = 1;
544	stack->gencnt = ctx->gencnt = 0;
545
546	if (alloc)
547	{
548	#if HAVE_MMAP
549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
551	if (stack->sptr != (void *)-1)
552	{
553	# if STACKGUARD
554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
555	# endif
556	}
557	else
558	#endif
559	{
560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
561	New (0, stack->sptr, STACKSIZE, long);
562	}
563	}
564	else
565	stack->sptr = 0;
566
567	ctx->stack = stack;
568	}
569
570	static void
571	deallocate_stack (Coro__State ctx)
572	{
573	coro_stack *stack = ctx->stack;
574
575	ctx->stack = 0;
576
577	if (stack)
578	{
579	if (!--stack->refcnt)
580	{
581	#ifdef HAVE_MMAP
582	if (stack->ssize > 0 && stack->sptr)
583	munmap (stack->sptr, stack->ssize);
584	else
585	#endif
586	Safefree (stack->sptr);
587
588	Safefree (stack);
589	}
590	else if (ctx->gencnt == stack->gencnt)
591	--stack->usecnt;
592	}
593	}
594
595	static void
596	setup_coro (void *arg)
597	{	530	{
598	/*	531	/*
599	* emulate part of the perl startup here.	532	* emulate part of the perl startup here.
600	*/	533	*/
601	dTHX;	534	dTHX;
602	dSP;	535	dSP;
603	Coro__State ctx = (Coro__State)arg;	536	UNOP myop;
604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	537	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
605		538
606	coro_init_stacks (aTHX);	539	coro_init_stacks ();
607	/PL_curcop = 0;/	540	/PL_curcop = 0;/
608	/PL_in_eval = PL_in_eval;/ /* inherit */	541	/PL_in_eval = PL_in_eval;/ /* inherit */
609	SvREFCNT_dec (GvAV (PL_defgv));	542	SvREFCNT_dec (GvAV (PL_defgv));
610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	543	GvAV (PL_defgv) = coro->args; coro->args = 0;
611		544
612	SPAGAIN;	545	SPAGAIN;
613		546
614	if (ctx->stack)
615	{
616	ctx->cursp = 0;
617
618	PUSHMARK(SP);
619	PUTBACK;
620	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
621
622	if (SvTRUE (ERRSV))
623	croak (NULL);
624	else
625	croak ("FATAL: CCTXT coroutine returned!");
626	}
627	else
628	{
629	UNOP myop;
630
631	Zero(&myop, 1, UNOP);	547	Zero (&myop, 1, UNOP);
632	myop.op_next = Nullop;	548	myop.op_next = Nullop;
633	myop.op_flags = OPf_WANT_VOID;	549	myop.op_flags = OPf_WANT_VOID;
634		550
635	PL_op = (OP *)&myop;	551	PL_op = (OP *)&myop;
636		552
637	PUSHMARK(SP);	553	PUSHMARK(SP);
638	XPUSHs (sub_init);	554	XPUSHs (sub_init);
639	/*
640	* the next line is slightly wrong, as PL_op->op_next
641	* is actually being executed so we skip the first op.
642	* that doesn't matter, though, since it is only
643	* pp_nextstate and we never return...
644	* ah yes, and I don't care anyways ;)
645	*/
646	PUTBACK;	555	PUTBACK;
647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	556	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
648	SPAGAIN;	557	SPAGAIN;
649		558
650	ENTER; /* necessary e.g. for dounwind */	559	ENTER; /* necessary e.g. for dounwind */
651	}
652	}	560	}
653		561
654	static void	562	static void
655	continue_coro (void *arg)	563	free_coro_mortal ()
656	{	564	{
657	/*
658	* this is a _very_ stripped down perl interpreter ;)
659	*/
660	dTHX;
661	Coro__State ctx = (Coro__State)arg;
662
663	PL_top_env = &PL_start_env;
664
665	ctx->cursp = 0;
666	PL_op = PL_op->op_next;
667	CALLRUNOPS(aTHX);
668
669	abort ();
670	}
671
672	static void
673	transfer (pTHX_ struct coro prev, struct coro next, int flags)
674	{
675	dSTACKLEVEL;
676
677	if (prev != next)
678	{
679	/* has this coro been created yet? */
680	if (next->mainstack)
681	{
682	LOCK;
683	SAVE (prev, flags);
684	LOAD (next);
685	UNLOCK;
686
687	/* mark this state as in-use */
688	next->mainstack = 0;
689	next->tmps_ix = -2;
690
691	/* stacklevel changed? if yes, grab the stack for us! */
692	if (flags & TRANSFER_SAVE_CCTXT)
693	{
694	if (!prev->stack)
695	allocate_stack (prev, 0);
696	else if (prev->cursp != stacklevel
697	&& prev->stack->usecnt > 1)
698	{
699	prev->gencnt = ++prev->stack->gencnt;
700	prev->stack->usecnt = 1;
701	}
702
703	/* has our stack been invalidated? */
704	if (next->stack && next->stack->gencnt != next->gencnt)
705	{
706	deallocate_stack (next);
707	allocate_stack (next, 1);
708	coro_create (&(next->stack->cctx),
709	continue_coro, (void *)next,
710	next->stack->sptr, labs (next->stack->ssize));
711	}
712
713	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
714	prev->cursp = stacklevel;
715	/* don't add any code here */
716	}
717	else
718	next->cursp = stacklevel;
719	}
720	else if (next->tmps_ix == -2)
721	croak ("tried to transfer to running coroutine");
722	else
723	{
724	LOCK;
725	SAVE (prev, -1); /* first get rid of the old state */
726	UNLOCK;
727
728	/* create the coroutine for the first time */
729	if (flags & TRANSFER_SAVE_CCTXT)
730	{
731	if (!prev->stack)
732	allocate_stack (prev, 0);
733
734	/* the new coroutine starts with start_env again */
735	PL_top_env = &PL_start_env;
736
737	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
738	{
739	setup_coro (next);
740	next->cursp = stacklevel;
741
742	prev->stack->refcnt++;
743	prev->stack->usecnt++;
744	next->stack = prev->stack;
745	next->gencnt = prev->gencnt;
746	}
747	else
748	{
749	assert (!next->stack);
750	allocate_stack (next, 1);
751	coro_create (&(next->stack->cctx),
752	setup_coro, (void *)next,
753	next->stack->sptr, labs (next->stack->ssize));
754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
755	prev->cursp = stacklevel;
756	/* don't add any code here */
757	}
758	}
759	else
760	{
761	setup_coro (next);
762	next->cursp = stacklevel;
763	}
764	}
765	}
766
767	LOCK;
768	if (coro_mortal)	565	if (coro_mortal)
769	{	566	{
770	SvREFCNT_dec (coro_mortal);	567	SvREFCNT_dec (coro_mortal);
771	coro_mortal = 0;	568	coro_mortal = 0;
772	}	569	}
		570	}
		571
		572	static void
		573	prepare_cctx (coro_stack *cctx)
		574	{
		575	dSP;
		576	UNOP myop;
		577
		578	Zero (&myop, 1, UNOP);
		579	myop.op_next = PL_op;
		580	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		581
		582	PUSHMARK(SP);
		583	EXTEND (SP, 2);
		584	PUSHs (newSViv (PTR2IV (cctx)));
		585	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
		586	PUTBACK;
		587	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		588	SPAGAIN;
		589	}
		590
		591	static void
		592	coro_run (void *arg)
		593	{
		594	/*
		595	* this is a _very_ stripped down perl interpreter ;)
		596	*/
773	UNLOCK;	597	UNLOCK;
774	}
775		598
776	#define SV_CORO(sv,func) \	599	PL_top_env = &PL_start_env;
777	do { \	600	prepare_cctx ((coro_stack *)arg);
778	if (SvROK (sv)) \
779	sv = SvRV (sv); \
780	\
781	if (SvTYPE (sv) == SVt_PVHV) \
782	{ \
783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
784	\
785	if (!he) \
786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
787	\
788	(sv) = SvRV (HeVAL(he)); \
789	} \
790	\
791	/* must also be changed inside Coro::Cont::yield */ \
792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
794	\
795	} while(0)
796		601
797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	602	/* somebody will hit me for both perl_run and PL_restartop */
		603	perl_run (PERL_GET_CONTEXT);
798		604
		605	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
		606	abort ();
		607	}
		608
		609	static coro_stack *
		610	stack_new ()
		611	{
		612	coro_stack *stack;
		613
		614	New (0, stack, 1, coro_stack);
		615
		616	#if HAVE_MMAP
		617
		618	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		619	/* mmap suppsedly does allocate-on-write for us */
		620	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		621
		622	if (stack->sptr == (void *)-1)
		623	{
		624	perror ("FATAL: unable to mmap stack for coroutine");
		625	_exit (EXIT_FAILURE);
		626	}
		627
		628	# if STACKGUARD
		629	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		630	# endif
		631
		632	#else
		633
		634	stack->ssize = STACKSIZE * (long)sizeof (long);
		635	New (0, stack->sptr, STACKSIZE, long);
		636
		637	if (!stack->sptr)
		638	{
		639	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		640	_exit (EXIT_FAILURE);
		641	}
		642
		643	#endif
		644
		645	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		646
		647	return stack;
		648	}
		649
		650	static void
		651	stack_free (coro_stack *stack)
		652	{
		653	if (!stack)
		654	return;
		655
		656	#if HAVE_MMAP
		657	munmap (stack->sptr, stack->ssize);
		658	#else
		659	Safefree (stack->sptr);
		660	#endif
		661
		662	Safefree (stack);
		663	}
		664
		665	static coro_stack *stack_first;
		666
		667	static coro_stack *
		668	stack_get ()
		669	{
		670	coro_stack *stack;
		671
		672	if (stack_first)
		673	{
		674	stack = stack_first;
		675	stack_first = stack->next;
		676	}
		677	else
		678	{
		679	stack = stack_new ();
		680	PL_op = PL_op->op_next;
		681	}
		682
		683	return stack;
		684	}
		685
		686	static void
		687	stack_put (coro_stack *stack)
		688	{
		689	stack->next = stack_first;
		690	stack_first = stack;
		691	}
		692
		693	/* never call directly, always through the coro_state_transfer global variable */
		694	static void
		695	transfer_impl (struct coro prev, struct coro next, int flags)
		696	{
		697	dSTACKLEVEL;
		698
		699	/* sometimes transfer is only called to set idle_sp */
		700	if (flags == TRANSFER_SET_STACKLEVEL)
		701	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		702	else if (prev != next)
		703	{
		704	coro_stack *prev__stack;
		705
		706	LOCK;
		707
		708	if (next->mainstack)
		709	{
		710	/* coroutine already started */
		711	SAVE (prev, flags);
		712	LOAD (next);
		713	}
		714	else
		715	{
		716	/* need to start coroutine */
		717	/* first get rid of the old state */
		718	SAVE (prev, -1);
		719	/* setup coroutine call */
		720	setup_coro (next);
		721	/* need a stack */
		722	next->stack = 0;
		723	}
		724
		725	if (!prev->stack)
		726	/* create a new empty context */
		727	Newz (0, prev->stack, 1, coro_stack);
		728
		729	prev__stack = prev->stack;
		730
		731	/* possibly "free" the stack */
		732	if (prev__stack->idle_sp == STACKLEVEL)
		733	{
		734	stack_put (prev__stack);
		735	prev->stack = 0;
		736	}
		737
		738	if (!next->stack)
		739	next->stack = stack_get ();
		740
		741	if (prev__stack != next->stack)
		742	{
		743	prev__stack->top_env = PL_top_env;
		744	PL_top_env = next->stack->top_env;
		745	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		746	}
		747
		748	free_coro_mortal ();
		749
		750	UNLOCK;
		751	}
		752	}
		753
		754	/* use this function pointer to call the above function */
		755	/* this is done to increase chances of the compiler not inlining the call */
		756	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
		757	void (coro_state_transfer)(struct coro prev, struct coro *next, int flags) = transfer_impl;
		758
		759	struct transfer_args
		760	{
		761	struct coro prev, next;
		762	int flags;
		763	};
		764
		765	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)
		766
		767	static void
		768	coro_state_destroy (struct coro *coro)
		769	{
		770	if (coro->refcnt--)
		771	return;
		772
		773	if (coro->mainstack && coro->mainstack != main_mainstack)
		774	{
		775	struct coro temp;
		776
		777	SAVE ((&temp), TRANSFER_SAVE_ALL);
		778	LOAD (coro);
		779
		780	destroy_stacks ();
		781
		782	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		783
		784	coro->mainstack = 0;
		785	}
		786
		787	stack_free (coro->stack);
		788	SvREFCNT_dec (coro->args);
		789	Safefree (coro);
		790	}
		791
799	static void	792	static int
		793	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		794	{
		795	struct coro coro = (struct coro )mg->mg_ptr;
		796	mg->mg_ptr = 0;
		797
		798	coro_state_destroy (coro);
		799
		800	return 0;
		801	}
		802
		803	static int
		804	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		805	{
		806	struct coro coro = (struct coro )mg->mg_ptr;
		807
		808	++coro->refcnt;
		809
		810	return 0;
		811	}
		812
		813	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		814
		815	static struct coro *
		816	SvSTATE (SV *coro)
		817	{
		818	HV *stash;
		819	MAGIC *mg;
		820
		821	if (SvROK (coro))
		822	coro = SvRV (coro);
		823
		824	stash = SvSTASH (coro);
		825	if (stash != coro_stash && stash != coro_state_stash)
		826	{
		827	/* very slow, but rare, check */
		828	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		829	croak ("Coro::State object required");
		830	}
		831
		832	mg = SvMAGIC (coro);
		833	assert (mg->mg_type == PERL_MAGIC_ext);
		834	return (struct coro *)mg->mg_ptr;
		835	}
		836
		837	static void
		838	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		839	{
		840	ta->prev = SvSTATE (prev);
		841	ta->next = SvSTATE (next);
		842	ta->flags = flags;
		843	}
		844
		845	static void
800	api_transfer(pTHX_ SV prev, SV next, int flags)	846	api_transfer (SV prev, SV next, int flags)
801	{	847	{
802	SV_CORO (prev, "Coro::transfer");	848	dTHX;
803	SV_CORO (next, "Coro::transfer");	849	struct transfer_args ta;
804		850
805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	851	prepare_transfer (&ta, prev, next, flags);
		852	TRANSFER (ta);
806	}	853	}
807		854
808	/ Coro ******************************************************************/	855	/ Coro ******************************************************************/
809		856
810	#define PRIO_MAX 3	857	#define PRIO_MAX 3
…		…
814	#define PRIO_IDLE -3	861	#define PRIO_IDLE -3
815	#define PRIO_MIN -4	862	#define PRIO_MIN -4
816		863
817	/* for Coro.pm */	864	/* for Coro.pm */
818	static GV coro_current, coro_idle;	865	static GV coro_current, coro_idle;
819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	866	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
820	static int coro_nready;	867	static int coro_nready;
821		868
822	static void	869	static void
823	coro_enq (pTHX_ SV *sv)	870	coro_enq (SV *sv)
824	{	871	{
825	SV **xprio;
826	int prio;	872	int prio;
827		873
828	if (SvTYPE (sv) != SVt_PVHV)	874	if (SvTYPE (sv) != SVt_PVHV)
829	croak ("Coro::ready tried to enqueue something that is not a coroutine");	875	croak ("Coro::ready tried to enqueue something that is not a coroutine");
830		876
831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	877	prio = SvSTATE (sv)->prio;
832	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
833
834	prio = prio > PRIO_MAX ? PRIO_MAX
835	: prio < PRIO_MIN ? PRIO_MIN
836	: prio;
837		878
838	av_push (coro_ready [prio - PRIO_MIN], sv);	879	av_push (coro_ready [prio - PRIO_MIN], sv);
839	coro_nready++;	880	coro_nready++;
840	}	881	}
841		882
842	static SV *	883	static SV *
843	coro_deq (pTHX_ int min_prio)	884	coro_deq (int min_prio)
844	{	885	{
845	int prio = PRIO_MAX - PRIO_MIN;	886	int prio = PRIO_MAX - PRIO_MIN;
846		887
847	min_prio -= PRIO_MIN;	888	min_prio -= PRIO_MIN;
848	if (min_prio < 0)	889	if (min_prio < 0)
849	min_prio = 0;	890	min_prio = 0;
850		891
851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	892	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
852	if (AvFILLp (coro_ready[prio]) >= 0)	893	if (AvFILLp (coro_ready [prio]) >= 0)
853	{	894	{
854	coro_nready--;	895	coro_nready--;
855	return av_shift (coro_ready[prio]);	896	return av_shift (coro_ready [prio]);
856	}	897	}
857		898
858	return 0;	899	return 0;
859	}	900	}
860		901
…		…
865		906
866	if (SvROK (coro))	907	if (SvROK (coro))
867	coro = SvRV (coro);	908	coro = SvRV (coro);
868		909
869	LOCK;	910	LOCK;
870	coro_enq (aTHX_ SvREFCNT_inc (coro));	911	coro_enq (SvREFCNT_inc (coro));
871	UNLOCK;	912	UNLOCK;
872	}	913	}
873		914
874	static void	915	static void
		916	prepare_schedule (struct transfer_args *ta)
		917	{
		918	SV current, prev, *next;
		919
		920	current = GvSV (coro_current);
		921
		922	for (;;)
		923	{
		924	LOCK;
		925	next = coro_deq (PRIO_MIN);
		926	UNLOCK;
		927
		928	if (next)
		929	break;
		930
		931	{
		932	dSP;
		933
		934	ENTER;
		935	SAVETMPS;
		936
		937	PUSHMARK (SP);
		938	PUTBACK;
		939	call_sv (GvSV (coro_idle), G_DISCARD);
		940
		941	FREETMPS;
		942	LEAVE;
		943	}
		944	}
		945
		946	prev = SvRV (current);
		947	SvRV (current) = next;
		948
		949	/* free this only after the transfer */
		950	LOCK;
		951	free_coro_mortal ();
		952	UNLOCK;
		953	coro_mortal = prev;
		954
		955	ta->prev = SvSTATE (prev);
		956	ta->next = SvSTATE (next);
		957	ta->flags = TRANSFER_SAVE_ALL;
		958	}
		959
		960	static void
		961	prepare_cede (struct transfer_args *ta)
		962	{
		963	LOCK;
		964	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		965	UNLOCK;
		966
		967	prepare_schedule (ta);
		968	}
		969
		970	static void
875	api_schedule (void)	971	api_schedule (void)
876	{	972	{
877	dTHX;	973	dTHX;
		974	struct transfer_args ta;
878		975
879	SV prev, next;	976	prepare_schedule (&ta);
880		977	TRANSFER (ta);
881	LOCK;
882
883	prev = SvRV (GvSV (coro_current));
884	next = coro_deq (aTHX_ PRIO_MIN);
885
886	if (!next)
887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
888
889	/* free this only after the transfer */
890	coro_mortal = prev;
891	SV_CORO (prev, "Coro::schedule");
892
893	SvRV (GvSV (coro_current)) = next;
894
895	SV_CORO (next, "Coro::schedule");
896
897	UNLOCK;
898
899	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
901	}	978	}
902		979
903	static void	980	static void
904	api_cede (void)	981	api_cede (void)
905	{	982	{
906	dTHX;	983	dTHX;
		984	struct transfer_args ta;
907		985
908	LOCK;	986	prepare_cede (&ta);
909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	987	TRANSFER (ta);
910	UNLOCK;
911
912	api_schedule ();
913	}	988	}
914		989
915	MODULE = Coro::State PACKAGE = Coro::State	990	MODULE = Coro::State PACKAGE = Coro::State
916		991
917	PROTOTYPES: ENABLE	992	PROTOTYPES: DISABLE
918		993
919	BOOT:	994	BOOT:
920	{ /* {} necessary for stoopid perl-5.6.x */	995	{
921	#ifdef USE_ITHREADS	996	#ifdef USE_ITHREADS
922	MUTEX_INIT (&coro_mutex);	997	MUTEX_INIT (&coro_mutex);
923	#endif	998	#endif
924	BOOT_PAGESIZE;	999	BOOT_PAGESIZE;
925		1000
926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
929		1002
930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1005	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
934		1006
935	main_mainstack = PL_mainstack;	1007	main_mainstack = PL_mainstack;
936		1008
937	coroapi.ver = CORO_API_VERSION;	1009	coroapi.ver = CORO_API_VERSION;
938	coroapi.transfer = api_transfer;	1010	coroapi.transfer = api_transfer;
939	}
940		1011
941	Coro::State	1012	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
942	_newprocess(args)	1013	}
943	SV * args	1014
944	PROTOTYPE: $	1015	SV *
		1016	new (char *klass, ...)
945	CODE:	1017	CODE:
946	Coro__State coro;	1018	{
		1019	struct coro *coro;
		1020	HV *hv;
		1021	int i;
947		1022
948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
949	croak ("Coro::State::_newprocess expects an arrayref");
950
951	Newz (0, coro, 1, struct coro);	1023	Newz (0, coro, 1, struct coro);
		1024	coro->args = newAV ();
952		1025
953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1026	hv = newHV ();
		1027	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1028	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1029
		1030	for (i = 1; i < items; i++)
		1031	av_push (coro->args, newSVsv (ST (i)));
		1032
954	/coro->mainstack = 0; //actual work is done inside transfer /	1033	/coro->mainstack = 0; //actual work is done inside transfer /
955	/coro->stack = 0;/	1034	/coro->stack = 0;/
956		1035	}
957	RETVAL = coro;
958	OUTPUT:	1036	OUTPUT:
959	RETVAL	1037	RETVAL
960		1038
961	void	1039	void
962	transfer(prev, next, flags)	1040	_set_stacklevel (...)
963	SV *prev	1041	ALIAS:
964	SV *next	1042	Coro::State::transfer = 1
965	int flags	1043	Coro::schedule = 2
966	PROTOTYPE: @	1044	Coro::cede = 3
		1045	Coro::Cont::yield = 4
967	CODE:	1046	CODE:
968	PUTBACK;	1047	{
969	SV_CORO (next, "Coro::transfer");	1048	struct transfer_args ta;
970	SV_CORO (prev, "Coro::transfer");	1049
971	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1050	switch (ix)
972	SPAGAIN;	1051	{
		1052	case 0:
		1053	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1054	ta.next = 0;
		1055	ta.flags = TRANSFER_SET_STACKLEVEL;
		1056	break;
		1057
		1058	case 1:
		1059	if (items != 3)
		1060	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1061
		1062	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1063	break;
		1064
		1065	case 2:
		1066	prepare_schedule (&ta);
		1067	break;
		1068
		1069	case 3:
		1070	prepare_cede (&ta);
		1071	break;
		1072
		1073	case 4:
		1074	{
		1075	SV *yieldstack;
		1076	SV *sv;
		1077	AV *defav = GvAV (PL_defgv);
		1078
		1079	yieldstack = *hv_fetch (
		1080	(HV *)SvRV (GvSV (coro_current)),
		1081	"yieldstack", sizeof ("yieldstack") - 1,
		1082	0
		1083	);
		1084
		1085	/* set up @_ -- ugly */
		1086	av_clear (defav);
		1087	av_fill (defav, items - 1);
		1088	while (items--)
		1089	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1090
		1091	sv = av_pop ((AV *)SvRV (yieldstack));
		1092	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1093	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1094	ta.flags = 0;
		1095	SvREFCNT_dec (sv);
		1096	}
		1097	break;
		1098
		1099	}
		1100
		1101	TRANSFER (ta);
		1102	}
973		1103
974	void	1104	void
975	DESTROY(coro)	1105	_clone_state_from (SV dst, SV src)
976	Coro::State coro	1106	CODE:
977	CODE:	1107	{
		1108	struct coro *coro_src = SvSTATE (src);
978		1109
979	if (coro->mainstack && coro->mainstack != main_mainstack)	1110	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
980	{
981	struct coro temp;
982		1111
983	PUTBACK;	1112	++coro_src->refcnt;
984	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1113	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
985	LOAD (aTHX_ coro);	1114	}
986	SPAGAIN;
987
988	destroy_stacks (aTHX);
989
990	LOAD ((&temp)); /* this will get rid of defsv etc.. */
991	SPAGAIN;
992
993	coro->mainstack = 0;
994	}
995
996	deallocate_stack (coro);
997	SvREFCNT_dec (coro->args);
998	Safefree (coro);
999		1115
1000	void	1116	void
		1117	_nonlocal_goto (IV nextop)
		1118	CODE:
		1119	/* uuh, somebody will kill me again for this */
		1120	PL_op->op_next = INT2PTR (OP *, nextop);
		1121
		1122	void
1001	_exit(code)	1123	_exit (code)
1002	int code	1124	int code
1003	PROTOTYPE: $	1125	PROTOTYPE: $
1004	CODE:	1126	CODE:
1005	_exit (code);	1127	_exit (code);
1006		1128
1007	MODULE = Coro::State PACKAGE = Coro::Cont
1008
1009	void
1010	yield(...)
1011	PROTOTYPE: @
1012	CODE:
1013	SV *yieldstack;
1014	SV *sv;
1015	AV *defav = GvAV (PL_defgv);
1016	struct coro prev, next;
1017
1018	yieldstack = *hv_fetch (
1019	(HV *)SvRV (GvSV (coro_current)),
1020	"yieldstack", sizeof ("yieldstack") - 1,
1021	0
1022	);
1023
1024	/* set up @_ -- ugly */
1025	av_clear (defav);
1026	av_fill (defav, items - 1);
1027	while (items--)
1028	av_store (defav, items, SvREFCNT_inc (ST(items)));
1029
1030	sv = av_pop ((AV *)SvRV (yieldstack));
1031	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1032	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1033	SvREFCNT_dec (sv);
1034
1035	transfer (aTHX_ prev, next, 0);
1036
1037	MODULE = Coro::State PACKAGE = Coro	1129	MODULE = Coro::State PACKAGE = Coro
1038		1130
1039	BOOT:	1131	BOOT:
1040	{	1132	{
1041	int i;	1133	int i;
		1134
1042	HV *stash = gv_stashpv ("Coro", TRUE);	1135	coro_stash = gv_stashpv ("Coro", TRUE);
1043		1136
1044	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1137	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1045	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1138	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1046	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1139	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1047	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1140	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1048	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1141	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1049	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1142	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1050		1143
1051	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1144	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1052	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1145	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1053		1146
1054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1147	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1067	sv_setiv (sv, (IV)&coroapi);	1160	sv_setiv (sv, (IV)&coroapi);
1068	SvREADONLY_on (sv);	1161	SvREADONLY_on (sv);
1069	}	1162	}
1070	}	1163	}
1071		1164
1072	#if !PERL_MICRO	1165	int
		1166	prio (Coro::State coro, int newprio = 0)
		1167	ALIAS:
		1168	nice = 1
		1169	CODE:
		1170	{
		1171	RETVAL = coro->prio;
		1172
		1173	if (items > 1)
		1174	{
		1175	if (ix)
		1176	newprio += coro->prio;
		1177
		1178	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1179	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1180
		1181	coro->prio = newprio;
		1182	}
		1183	}
1073		1184
1074	void	1185	void
1075	ready(self)	1186	ready (SV *self)
1076	SV * self
1077	PROTOTYPE: $	1187	PROTOTYPE: $
1078	CODE:	1188	CODE:
1079	api_ready (self);	1189	api_ready (self);
1080		1190
1081	#endif
1082
1083	int	1191	int
1084	nready(...)	1192	nready (...)
1085	PROTOTYPE:	1193	PROTOTYPE:
1086	CODE:	1194	CODE:
1087	RETVAL = coro_nready;	1195	RETVAL = coro_nready;
1088	OUTPUT:	1196	OUTPUT:
1089	RETVAL	1197	RETVAL
1090		1198
1091	void	1199	MODULE = Coro::State PACKAGE = Coro::AIO
1092	schedule(...)
1093	PROTOTYPE:
1094	CODE:
1095	api_schedule ();
1096		1200
1097	void
1098	cede(...)
1099	PROTOTYPE:
1100	CODE:
1101	api_cede ();
1102
1103	# and these are hacks
1104	SV *	1201	SV *
1105	_aio_get_state ()	1202	_get_state ()
1106	CODE:	1203	CODE:
1107	{	1204	{
1108	struct {	1205	struct {
1109	int errorno;	1206	int errorno;
1110	int laststype;	1207	int laststype;
…		…
1121	}	1218	}
1122	OUTPUT:	1219	OUTPUT:
1123	RETVAL	1220	RETVAL
1124		1221
1125	void	1222	void
1126	_aio_set_state (char *data_)	1223	_set_state (char *data_)
1127	PROTOTYPE: $	1224	PROTOTYPE: $
1128	CODE:	1225	CODE:
1129	{	1226	{
1130	struct {	1227	struct {
1131	int errorno;	1228	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.82 by root, Mon Nov 20 22:26:16 2006 UTC vs. Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.82 by root, Mon Nov 20 22:26:16 2006 UTC vs.
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC