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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.79 by root, Thu Nov 2 12:29:08 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 top-level JMPENV for each coroutine, needed to catch dies. */	103	/* the c coroutine allocated to this perl coroutine, if any */
106	JMPENV start_env;
107
108	/* the optional C context */
109	coro_stack *stack;	104	coro_stack *stack;
110	void *cursp;	105
		106	/* data associated with this coroutine (initial args) */
		107	AV *args;
111	int gencnt;	108	int refcnt;
112		109
113	/* optionally saved, might be zero */	110	/* optionally saved, might be zero */
114	AV *defav;	111	AV *defav;
115	SV *defsv;	112	SV *defsv;
116	SV *errsv;	113	SV *errsv;
…		…
146	OP **retstack;	143	OP **retstack;
147	I32 retstack_ix;	144	I32 retstack_ix;
148	I32 retstack_max;	145	I32 retstack_max;
149	PMOP *curpm;	146	PMOP *curpm;
150	COP *curcop;	147	COP *curcop;
151	JMPENV *top_env;
152		148
153	/* data associated with this coroutine (initial args) */	149	/* coro process data */
154	AV *args;	150	int prio;
155	};	151	};
156		152
157	typedef struct coro *Coro__State;	153	typedef struct coro *Coro__State;
158	typedef struct coro *Coro__State_or_hashref;	154	typedef struct coro *Coro__State_or_hashref;
159		155
160	static AV *	156	static AV *
161	coro_clone_padlist (pTHX_ CV *cv)	157	coro_clone_padlist (CV *cv)
162	{	158	{
163	AV *padlist = CvPADLIST (cv);	159	AV *padlist = CvPADLIST (cv);
164	AV newpadlist, newpad;	160	AV newpadlist, newpad;
165		161
166	newpadlist = newAV ();	162	newpadlist = newAV ();
…		…
178		174
179	return newpadlist;	175	return newpadlist;
180	}	176	}
181		177
182	static void	178	static void
183	free_padlist (pTHX_ AV *padlist)	179	free_padlist (AV *padlist)
184	{	180	{
185	/* may be during global destruction */	181	/* may be during global destruction */
186	if (SvREFCNT (padlist))	182	if (SvREFCNT (padlist))
187	{	183	{
188	I32 i = AvFILLp (padlist);	184	I32 i = AvFILLp (padlist);
…		…
209	AV *padlist;	205	AV *padlist;
210	AV av = (AV )mg->mg_obj;	206	AV av = (AV )mg->mg_obj;
211		207
212	/* casting is fun. */	208	/* casting is fun. */
213	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
214	free_padlist (aTHX_ padlist);	210	free_padlist (padlist);
215		211
216	SvREFCNT_dec (av);	212	SvREFCNT_dec (av);
217		213
218	return 0;	214	return 0;
219	}	215	}
…		…
222		218
223	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
224		220
225	/* the next two functions merely cache the padlists */	221	/* the next two functions merely cache the padlists */
226	static void	222	static void
227	get_padlist (pTHX_ CV *cv)	223	get_padlist (CV *cv)
228	{	224	{
229	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
230		226
231	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
232	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
233	else	229	else
234	{	230	{
235	#if 0	231	#if 0
236	/* this should work - but it doesn't :( */	232	/* this is probably cleaner, but also slower? */
237	CV *cp = Perl_cv_clone (aTHX_ cv);	233	CV *cp = Perl_cv_clone (cv);
238	CvPADLIST (cv) = CvPADLIST (cp);	234	CvPADLIST (cv) = CvPADLIST (cp);
239	CvPADLIST (cp) = 0;	235	CvPADLIST (cp) = 0;
240	SvREFCNT_dec (cp);	236	SvREFCNT_dec (cp);
241	#else	237	#else
242	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	238	CvPADLIST (cv) = coro_clone_padlist (cv);
243	#endif	239	#endif
244	}	240	}
245	}	241	}
246		242
247	static void	243	static void
248	put_padlist (pTHX_ CV *cv)	244	put_padlist (CV *cv)
249	{	245	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
251		247
252	if (!mg)	248	if (!mg)
253	{	249	{
…		…
261	}	257	}
262		258
263	#define SB do {	259	#define SB do {
264	#define SE } while (0)	260	#define SE } while (0)
265		261
266	#define LOAD(state) load_state(aTHX_ (state));	262	#define LOAD(state) load_state((state));
267	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	263	#define SAVE(state,flags) save_state((state),(flags));
268		264
269	#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
270		266
271	static void	267	static void
272	load_state(pTHX_ Coro__State c)	268	load_state(Coro__State c)
273	{	269	{
274	PL_dowarn = c->dowarn;	270	PL_dowarn = c->dowarn;
275	PL_in_eval = c->in_eval;	271	PL_in_eval = c->in_eval;
276		272
277	PL_curstackinfo = c->curstackinfo;	273	PL_curstackinfo = c->curstackinfo;
…		…
302	PL_retstack_ix = c->retstack_ix;	298	PL_retstack_ix = c->retstack_ix;
303	PL_retstack_max = c->retstack_max;	299	PL_retstack_max = c->retstack_max;
304	#endif	300	#endif
305	PL_curpm = c->curpm;	301	PL_curpm = c->curpm;
306	PL_curcop = c->curcop;	302	PL_curcop = c->curcop;
307	PL_top_env = c->top_env;
308		303
309	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
310	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
311	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
312		307
…		…
319	{	314	{
320	AV padlist = (AV )POPs;	315	AV padlist = (AV )POPs;
321		316
322	if (padlist)	317	if (padlist)
323	{	318	{
324	put_padlist (aTHX_ cv); /* mark this padlist as available */	319	put_padlist (cv); /* mark this padlist as available */
325	CvPADLIST(cv) = padlist;	320	CvPADLIST(cv) = padlist;
326	}	321	}
327		322
328	++CvDEPTH(cv);	323	++CvDEPTH(cv);
329	}	324	}
…		…
331	PUTBACK;	326	PUTBACK;
332	}	327	}
333	}	328	}
334		329
335	static void	330	static void
336	save_state(pTHX_ Coro__State c, int flags)	331	save_state(Coro__State c, int flags)
337	{	332	{
338	{	333	{
339	dSP;	334	dSP;
340	I32 cxix = cxstack_ix;	335	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	336	PERL_CONTEXT *ccstk = cxstack;
…		…
369	}	364	}
370		365
371	PUSHs ((SV *)CvPADLIST(cv));	366	PUSHs ((SV *)CvPADLIST(cv));
372	PUSHs ((SV *)cv);	367	PUSHs ((SV *)cv);
373		368
374	get_padlist (aTHX_ cv);	369	get_padlist (cv);
375	}	370	}
376	}	371	}
377	#ifdef CXt_FORMAT	372	#ifdef CXt_FORMAT
378	else if (CxTYPE(cx) == CXt_FORMAT)	373	else if (CxTYPE(cx) == CXt_FORMAT)
379	{	374	{
…		…
430	c->retstack_ix = PL_retstack_ix;	425	c->retstack_ix = PL_retstack_ix;
431	c->retstack_max = PL_retstack_max;	426	c->retstack_max = PL_retstack_max;
432	#endif	427	#endif
433	c->curpm = PL_curpm;	428	c->curpm = PL_curpm;
434	c->curcop = PL_curcop;	429	c->curcop = PL_curcop;
435	c->top_env = PL_top_env;
436	}	430	}
437		431
438	/*	432	/*
439	* allocate various perl stacks. This is an exact copy	433	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	434	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	435	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	436	* not usually need a lot of stackspace.
443	*/	437	*/
444	static void	438	static void
445	coro_init_stacks (pTHX)	439	coro_init_stacks ()
446	{	440	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	441	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
450	PL_curstackinfo->si_type = PERLSI_MAIN;	442	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	443	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	444	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		445
…		…
479	#if PERL_VERSION < 9	471	#if PERL_VERSION < 9
480	New(54,PL_retstack,8,OP*);	472	New(54,PL_retstack,8,OP*);
481	PL_retstack_ix = 0;	473	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	474	PL_retstack_max = 8;
483	#endif	475	#endif
484
485	UNLOCK;
486	}	476	}
487		477
488	/*	478	/*
489	* destroy the stacks, the callchain etc...	479	* destroy the stacks, the callchain etc...
490	*/	480	*/
491	static void	481	static void
492	destroy_stacks(pTHX)	482	destroy_stacks()
493	{	483	{
494	if (!IN_DESTRUCT)	484	if (!IN_DESTRUCT)
495	{	485	{
496	/* is this ugly, I ask? */	486	/* is this ugly, I ask? */
497	LEAVE_SCOPE (0);	487	LEAVE_SCOPE (0);
…		…
534	Safefree (PL_retstack);	524	Safefree (PL_retstack);
535	#endif	525	#endif
536	}	526	}
537		527
538	static void	528	static void
539	allocate_stack (Coro__State ctx, int alloc)	529	setup_coro (struct coro *coro)
540	{
541	coro_stack *stack;
542
543	New (0, stack, 1, coro_stack);
544
545	stack->refcnt = 1;
546	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;
548
549	if (alloc)
550	{
551	#if HAVE_MMAP
552	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
553	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
554	if (stack->sptr != (void *)-1)
555	{
556	# if STACKGUARD
557	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
558	# endif
559	}
560	else
561	#endif
562	{
563	stack->ssize = - (STACKSIZE * (long)sizeof (long));
564	New (0, stack->sptr, STACKSIZE, long);
565	}
566	}
567	else
568	stack->sptr = 0;
569
570	ctx->stack = stack;
571	}
572
573	static void
574	deallocate_stack (Coro__State ctx)
575	{
576	coro_stack *stack = ctx->stack;
577
578	ctx->stack = 0;
579
580	if (stack)
581	{
582	if (!--stack->refcnt)
583	{
584	#ifdef HAVE_MMAP
585	if (stack->ssize > 0 && stack->sptr)
586	munmap (stack->sptr, stack->ssize);
587	else
588	#endif
589	Safefree (stack->sptr);
590
591	Safefree (stack);
592	}
593	else if (ctx->gencnt == stack->gencnt)
594	--stack->usecnt;
595	}
596	}
597
598	static void
599	setup_coro (void *arg)
600	{	530	{
601	/*	531	/*
602	* emulate part of the perl startup here.	532	* emulate part of the perl startup here.
603	*/	533	*/
604	dTHX;	534	dTHX;
605	dSP;	535	dSP;
606	Coro__State ctx = (Coro__State)arg;	536	UNOP myop;
607	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	537	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
608		538
609	coro_init_stacks (aTHX);	539	coro_init_stacks ();
610	/PL_curcop = 0;/	540	/PL_curcop = 0;/
611	/PL_in_eval = PL_in_eval;/ /* inherit */	541	/PL_in_eval = PL_in_eval;/ /* inherit */
612	SvREFCNT_dec (GvAV (PL_defgv));	542	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	543	GvAV (PL_defgv) = coro->args; coro->args = 0;
614		544
615	SPAGAIN;	545	SPAGAIN;
616		546
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\|G_EVAL);
624
625	if (SvTRUE (ERRSV))
626	croak (NULL);
627	else
628	croak ("FATAL: CCTXT coroutine returned!");
629	}
630	else
631	{
632	UNOP myop;
633
634	PL_op = (OP *)&myop;
635
636	Zero(&myop, 1, UNOP);	547	Zero (&myop, 1, UNOP);
637	myop.op_next = Nullop;	548	myop.op_next = Nullop;
638	myop.op_flags = OPf_WANT_VOID;	549	myop.op_flags = OPf_WANT_VOID;
639		550
		551	PL_op = (OP *)&myop;
		552
640	PUSHMARK(SP);	553	PUSHMARK(SP);
641	XPUSHs (sub_init);	554	XPUSHs (sub_init);
642	/*
643	* the next line is slightly wrong, as PL_op->op_next
644	* is actually being executed so we skip the first op.
645	* that doesn't matter, though, since it is only
646	* pp_nextstate and we never return...
647	* ah yes, and I don't care anyways ;)
648	*/
649	PUTBACK;	555	PUTBACK;
650	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	556	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
651	SPAGAIN;	557	SPAGAIN;
652		558
653	ENTER; /* necessary e.g. for dounwind */	559	ENTER; /* necessary e.g. for dounwind */
654	}
655	}	560	}
656		561
657	static void	562	static void
658	continue_coro (void *arg)	563	free_coro_mortal ()
659	{	564	{
660	/*
661	* this is a _very_ stripped down perl interpreter ;)
662	*/
663	dTHX;
664	Coro__State ctx = (Coro__State)arg;
665
666	PL_top_env = &ctx->start_env;
667
668	ctx->cursp = 0;
669	PL_op = PL_op->op_next;
670	CALLRUNOPS(aTHX);
671
672	abort ();
673	}
674
675	static void
676	transfer (pTHX_ struct coro prev, struct coro next, int flags)
677	{
678	dSTACKLEVEL;
679
680	if (prev != next)
681	{
682	if (next->mainstack)
683	{
684	LOCK;
685	SAVE (prev, flags);
686	LOAD (next);
687	UNLOCK;
688
689	/* mark this state as in-use */
690	next->mainstack = 0;
691	next->tmps_ix = -2;
692
693	/* stacklevel changed? if yes, grab the stack for us! */
694	if (flags & TRANSFER_SAVE_CCTXT)
695	{
696	if (!prev->stack)
697	allocate_stack (prev, 0);
698	else if (prev->cursp != stacklevel
699	&& prev->stack->usecnt > 1)
700	{
701	prev->gencnt = ++prev->stack->gencnt;
702	prev->stack->usecnt = 1;
703	}
704
705	/* has our stack been invalidated? */
706	if (next->stack && next->stack->gencnt != next->gencnt)
707	{
708	deallocate_stack (next);
709	allocate_stack (next, 1);
710	coro_create (&(next->stack->cctx),
711	continue_coro, (void *)next,
712	next->stack->sptr, labs (next->stack->ssize));
713	}
714
715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
716	prev->cursp = stacklevel;
717	/* don't add any code here */
718	}
719	else
720	next->cursp = stacklevel;
721	}
722	else if (next->tmps_ix == -2)
723	croak ("tried to transfer to running coroutine");
724	else
725	{
726	LOCK;
727	SAVE (prev, -1); /* first get rid of the old state */
728	UNLOCK;
729
730	if (flags & TRANSFER_SAVE_CCTXT)
731	{
732	if (!prev->stack)
733	allocate_stack (prev, 0);
734
735	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
736	{
737	PL_top_env = &next->start_env;
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 (av_len (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	/* same as JMPENV_BOOTSTRAP */
958	/* we might be able to recycle start_env, but safe is safe */
959	/Zero(&coro->start_env, 1, JMPENV);/
960	coro->start_env.je_ret = -1;
961	coro->start_env.je_mustcatch = TRUE;
962
963	RETVAL = coro;
964	OUTPUT:	1036	OUTPUT:
965	RETVAL	1037	RETVAL
966		1038
967	void	1039	void
968	transfer(prev, next, flags)	1040	_set_stacklevel (...)
969	SV *prev	1041	ALIAS:
970	SV *next	1042	Coro::State::transfer = 1
971	int flags	1043	Coro::schedule = 2
972	PROTOTYPE: @	1044	Coro::cede = 3
		1045	Coro::Cont::yield = 4
973	CODE:	1046	CODE:
974	PUTBACK;	1047	{
975	SV_CORO (next, "Coro::transfer");	1048	struct transfer_args ta;
976	SV_CORO (prev, "Coro::transfer");	1049
977	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1050	switch (ix)
978	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	}
979		1103
980	void	1104	void
981	DESTROY(coro)	1105	_clone_state_from (SV dst, SV src)
982	Coro::State coro	1106	CODE:
983	CODE:	1107	{
		1108	struct coro *coro_src = SvSTATE (src);
984		1109
985	if (coro->mainstack && coro->mainstack != main_mainstack)	1110	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
986	{
987	struct coro temp;
988		1111
989	PUTBACK;	1112	++coro_src->refcnt;
990	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;
991	LOAD (aTHX_ coro);	1114	}
992	SPAGAIN;
993
994	destroy_stacks (aTHX);
995
996	LOAD ((&temp)); /* this will get rid of defsv etc.. */
997	SPAGAIN;
998
999	coro->mainstack = 0;
1000	}
1001
1002	deallocate_stack (coro);
1003	SvREFCNT_dec (coro->args);
1004	Safefree (coro);
1005		1115
1006	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
1007	_exit(code)	1123	_exit (code)
1008	int code	1124	int code
1009	PROTOTYPE: $	1125	PROTOTYPE: $
1010	CODE:	1126	CODE:
1011	_exit (code);	1127	_exit (code);
1012		1128
1013	MODULE = Coro::State PACKAGE = Coro::Cont
1014
1015	# this is slightly dirty (should expose a c-level api)
1016
1017	void
1018	yield(...)
1019	PROTOTYPE: @
1020	CODE:
1021	SV *yieldstack;
1022	SV *sv;
1023	AV *defav = GvAV (PL_defgv);
1024	struct coro prev, next;
1025
1026	yieldstack = *hv_fetch (
1027	(HV *)SvRV (GvSV (coro_current)),
1028	"yieldstack", sizeof ("yieldstack") - 1,
1029	0
1030	);
1031
1032	/* set up @_ -- ugly */
1033	av_clear (defav);
1034	av_fill (defav, items - 1);
1035	while (items--)
1036	av_store (defav, items, SvREFCNT_inc (ST(items)));
1037
1038	sv = av_pop ((AV *)SvRV (yieldstack));
1039	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1040	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1041	SvREFCNT_dec (sv);
1042
1043	transfer (aTHX_ prev, next, 0);
1044
1045	MODULE = Coro::State PACKAGE = Coro	1129	MODULE = Coro::State PACKAGE = Coro
1046		1130
1047	# this is slightly dirty (should expose a c-level api)
1048
1049	BOOT:	1131	BOOT:
1050	{	1132	{
1051	int i;	1133	int i;
		1134
1052	HV *stash = gv_stashpv ("Coro", TRUE);	1135	coro_stash = gv_stashpv ("Coro", TRUE);
1053		1136
1054	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1137	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1055	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1138	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1056	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1139	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1057	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1140	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1058	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1141	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1059	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1142	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1060		1143
1061	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1144	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1062	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1145	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1063		1146
1064	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1147	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1072	coroapi.ready = api_ready;	1155	coroapi.ready = api_ready;
1073	coroapi.nready = &coro_nready;	1156	coroapi.nready = &coro_nready;
1074	coroapi.current = coro_current;	1157	coroapi.current = coro_current;
1075		1158
1076	GCoroAPI = &coroapi;	1159	GCoroAPI = &coroapi;
1077	sv_setiv(sv, (IV)&coroapi);	1160	sv_setiv (sv, (IV)&coroapi);
1078	SvREADONLY_on(sv);	1161	SvREADONLY_on (sv);
1079	}	1162	}
1080	}	1163	}
1081		1164
1082	#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	}
1083		1184
1084	void	1185	void
1085	ready(self)	1186	ready (SV *self)
1086	SV * self
1087	PROTOTYPE: $	1187	PROTOTYPE: $
1088	CODE:	1188	CODE:
1089	api_ready (self);	1189	api_ready (self);
1090		1190
1091	#endif
1092
1093	int	1191	int
1094	nready(...)	1192	nready (...)
1095	PROTOTYPE:	1193	PROTOTYPE:
1096	CODE:	1194	CODE:
1097	RETVAL = coro_nready;	1195	RETVAL = coro_nready;
1098	OUTPUT:	1196	OUTPUT:
1099	RETVAL	1197	RETVAL
1100		1198
1101	void	1199	MODULE = Coro::State PACKAGE = Coro::AIO
1102	schedule(...)
1103	PROTOTYPE:
1104	CODE:
1105	api_schedule ();
1106		1200
1107	void
1108	cede(...)
1109	PROTOTYPE:
1110	CODE:
1111	api_cede ();
1112
1113	# and these are hacks
1114	SV *	1201	SV *
1115	_aio_get_state ()	1202	_get_state ()
1116	CODE:	1203	CODE:
1117	{	1204	{
1118	struct {	1205	struct {
1119	int errorno;	1206	int errorno;
1120	int laststype;	1207	int laststype;
…		…
1131	}	1218	}
1132	OUTPUT:	1219	OUTPUT:
1133	RETVAL	1220	RETVAL
1134		1221
1135	void	1222	void
1136	_aio_set_state (char *data_)	1223	_set_state (char *data_)
1137	PROTOTYPE: $	1224	PROTOTYPE: $
1138	CODE:	1225	CODE:
1139	{	1226	{
1140	struct {	1227	struct {
1141	int errorno;	1228	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.79 by root, Thu Nov 2 12:29:08 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 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs.
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC