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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.72 by root, Wed Feb 1 23:59:41 2006 UTC vs.
Revision 1.94 by root, Sun Nov 26 17:14:15 2006 UTC

…		…
27	# ifndef IS_PADCONST	27	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	28	# define IS_PADCONST(v) 0
29	# endif	29	# endif
30	#endif	30	#endif
31		31
		32	#include <stdio.h>
32	#include <errno.h>	33	#include <errno.h>
33	#include <signal.h>	34
		35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		36	# undef STACKGUARD
		37	#endif
		38
		39	#ifndef STACKGUARD
		40	# define STACKGUARD 0
		41	#endif
34		42
35	#ifdef HAVE_MMAP	43	#ifdef HAVE_MMAP
36	# include <unistd.h>	44	# include <unistd.h>
37	# include <sys/mman.h>	45	# include <sys/mman.h>
38	# ifndef MAP_ANONYMOUS	46	# ifndef MAP_ANONYMOUS
…		…
40	# define MAP_ANONYMOUS MAP_ANON	48	# define MAP_ANONYMOUS MAP_ANON
41	# else	49	# else
42	# undef HAVE_MMAP	50	# undef HAVE_MMAP
43	# endif	51	# endif
44	# endif	52	# endif
		53	# include <limits.h>
		54	# ifndef PAGESIZE
		55	# define PAGESIZE pagesize
		56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		57	static long pagesize;
		58	# else
		59	# define BOOT_PAGESIZE
45	#endif	60	# endif
46		61	#endif
47	#define SUB_INIT "Coro::State::initialize"
48	#define UCORO_STATE "_coro_state"
49		62
50	/* The next macro should declare a variable stacklevel that contains and approximation	63	/* The next macro should declare a variable stacklevel that contains and approximation
51	* to the current C stack pointer. Its property is that it changes with each call	64	* to the current C stack pointer. Its property is that it changes with each call
52	* and should be unique. */	65	* and should be unique. */
		66	#define dSTACKLEVEL int stacklevel
53	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define STACKLEVEL ((void *)&stacklevel)
54		68
55	#define IN_DESTRUCT (PL_main_cv == Nullcv)	69	#define IN_DESTRUCT (PL_main_cv == Nullcv)
56		70
57	#define labs(l) ((l) >= 0 ? (l) : -(l))
58
59	#include "CoroAPI.h"	71	#include "CoroAPI.h"
		72
		73	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
60		74
61	#ifdef USE_ITHREADS	75	#ifdef USE_ITHREADS
62	static perl_mutex coro_mutex;	76	static perl_mutex coro_mutex;
63	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
64	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
67	# define UNLOCK (void)0	81	# define UNLOCK (void)0
68	#endif	82	#endif
69		83
70	static struct CoroAPI coroapi;	84	static struct CoroAPI coroapi;
71	static AV main_mainstack; / used to differentiate between $main and others */	85	static AV main_mainstack; / used to differentiate between $main and others */
72	static HV *coro_state_stash;	86	static HV coro_state_stash, coro_stash;
73	static SV *ucoro_state_sv;
74	static U32 ucoro_state_hash;
75	static SV coro_mortal; / will be freed after next transfer */	87	static SV coro_mortal; / will be freed after next transfer */
76		88
77	/* this is actually not only the c stack but also c registers etc... */	89	/* this is a structure representing a c-level coroutine */
78	typedef struct {	90	typedef struct coro_stack {
79	int refcnt; /* pointer reference counter */	91	struct coro_stack *next;
80	int usecnt; /* shared by how many coroutines */
81	int gencnt; /* generation counter */
82		92
83	coro_context cctx;	93	/* the stack */
84
85	void *sptr;	94	void *sptr;
86	long ssize; /* positive == mmap, otherwise malloc */	95	long ssize; /* positive == mmap, otherwise malloc */
		96
		97	/* cpu state */
		98	void idle_sp; / original stacklevel when coroutine was created */
		99	JMPENV *top_env;
		100	coro_context cctx;
87	} coro_stack;	101	} coro_stack;
88		102
		103	/* the (fake) coro_stack representing the main program */
		104	static coro_stack *main_stack;
		105
		106	/* this is a structure representing a perl-level coroutine */
89	struct coro {	107	struct coro {
90	/* the top-level JMPENV for each coroutine, needed to catch dies. */	108	/* the c coroutine allocated to this perl coroutine, if any */
91	JMPENV start_env;
92
93	/* the optional C context */
94	coro_stack *stack;	109	coro_stack *stack;
95	void *cursp;	110
		111	/* data associated with this coroutine (initial args) */
		112	AV *args;
96	int gencnt;	113	int refcnt;
97		114
98	/* optionally saved, might be zero */	115	/* optionally saved, might be zero */
99	AV *defav;	116	AV *defav;
100	SV *defsv;	117	SV *defsv;
101	SV *errsv;	118	SV *errsv;
…		…
131	OP **retstack;	148	OP **retstack;
132	I32 retstack_ix;	149	I32 retstack_ix;
133	I32 retstack_max;	150	I32 retstack_max;
134	PMOP *curpm;	151	PMOP *curpm;
135	COP *curcop;	152	COP *curcop;
136	JMPENV *top_env;
137		153
138	/* data associated with this coroutine (initial args) */	154	/* coro process data */
139	AV *args;	155	int prio;
140	};	156	};
141		157
142	typedef struct coro *Coro__State;	158	typedef struct coro *Coro__State;
143	typedef struct coro *Coro__State_or_hashref;	159	typedef struct coro *Coro__State_or_hashref;
144		160
145	/* mostly copied from op.c:cv_clone2 */	161	static AV *
146	STATIC AV *	162	coro_clone_padlist (pTHX_ CV *cv)
147	clone_padlist (pTHX_ AV *protopadlist)
148	{	163	{
149	AV *av;	164	AV *padlist = CvPADLIST (cv);
150	I32 ix;
151	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
152	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
153	SV **pname = AvARRAY (protopad_name);
154	SV **ppad = AvARRAY (protopad);
155	I32 fname = AvFILLp (protopad_name);
156	I32 fpad = AvFILLp (protopad);
157	AV newpadlist, newpad_name, *newpad;	165	AV newpadlist, newpad;
158	SV **npad;
159
160	newpad_name = newAV ();
161	for (ix = fname; ix >= 0; ix--)
162	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
163
164	newpad = newAV ();
165	av_fill (newpad, AvFILLp (protopad));
166	npad = AvARRAY (newpad);
167		166
168	newpadlist = newAV ();	167	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	168	AvREAL_off (newpadlist);
170	av_store (newpadlist, 0, (SV *) newpad_name);	169	#if PERL_VERSION < 9
		170	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		171	#else
		172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		173	#endif
		174	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		175	--AvFILLp (padlist);
		176
		177	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
171	av_store (newpadlist, 1, (SV *) newpad);	178	av_store (newpadlist, 1, (SV *)newpad);
172
173	av = newAV (); /* will be @_ */
174	av_extend (av, 0);
175	av_store (newpad, 0, (SV *) av);
176	AvREIFY_on (av);
177
178	for (ix = fpad; ix > 0; ix--)
179	{
180	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
181
182	if (namesv && namesv != &PL_sv_undef)
183	{
184	char name = SvPVX (namesv); / XXX */
185
186	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
187	{ /* lexical from outside? */
188	npad[ix] = SvREFCNT_inc (ppad[ix]);
189	}
190	else
191	{ /* our own lexical */
192	SV *sv;
193	if (*name == '&')
194	sv = SvREFCNT_inc (ppad[ix]);
195	else if (*name == '@')
196	sv = (SV *) newAV ();
197	else if (*name == '%')
198	sv = (SV *) newHV ();
199	else
200	sv = NEWSV (0, 0);
201
202	#ifdef SvPADBUSY
203	if (!SvPADBUSY (sv))
204	#endif
205	SvPADMY_on (sv);
206
207	npad[ix] = sv;
208	}
209	}
210	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
211	{
212	npad[ix] = SvREFCNT_inc (ppad[ix]);
213	}
214	else
215	{
216	SV *sv = NEWSV (0, 0);
217	SvPADTMP_on (sv);
218	npad[ix] = sv;
219	}
220	}
221
222	#if 0 /* return -ENOTUNDERSTOOD */
223	/* Now that vars are all in place, clone nested closures. */
224
225	for (ix = fpad; ix > 0; ix--) {
226	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
227	if (namesv
228	&& namesv != &PL_sv_undef
229	&& !(SvFLAGS(namesv) & SVf_FAKE)
230	&& *SvPVX(namesv) == '&'
231	&& CvCLONE(ppad[ix]))
232	{
233	CV kid = cv_clone((CV)ppad[ix]);
234	SvREFCNT_dec(ppad[ix]);
235	CvCLONE_on(kid);
236	SvPADMY_on(kid);
237	npad[ix] = (SV*)kid;
238	}
239	}
240	#endif
241		179
242	return newpadlist;	180	return newpadlist;
243	}	181	}
244		182
245	STATIC void	183	static void
246	free_padlist (pTHX_ AV *padlist)	184	free_padlist (pTHX_ AV *padlist)
247	{	185	{
248	/* may be during global destruction */	186	/* may be during global destruction */
249	if (SvREFCNT (padlist))	187	if (SvREFCNT (padlist))
250	{	188	{
…		…
264		202
265	SvREFCNT_dec ((SV*)padlist);	203	SvREFCNT_dec ((SV*)padlist);
266	}	204	}
267	}	205	}
268		206
269	STATIC int	207	static int
270	coro_cv_free (pTHX_ SV sv, MAGIC mg)	208	coro_cv_free (pTHX_ SV sv, MAGIC mg)
271	{	209	{
272	AV *padlist;	210	AV *padlist;
273	AV av = (AV )mg->mg_obj;	211	AV av = (AV )mg->mg_obj;
274		212
275	/* casting is fun. */	213	/* casting is fun. */
276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	214	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
277	free_padlist (aTHX_ padlist);	215	free_padlist (aTHX_ padlist);
278		216
279	SvREFCNT_dec (av);	217	SvREFCNT_dec (av);
		218
		219	return 0;
280	}	220	}
281		221
282	#define PERL_MAGIC_coro PERL_MAGIC_ext	222	#define PERL_MAGIC_coro PERL_MAGIC_ext
283		223
284	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
285		225
286	/* the next two functions merely cache the padlists */	226	/* the next two functions merely cache the padlists */
287	STATIC void	227	static void
288	get_padlist (pTHX_ CV *cv)	228	get_padlist (pTHX_ CV *cv)
289	{	229	{
290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
291		231
292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	233	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
294	else	234	else
		235	{
		236	#if 0
		237	/* this should work - but it doesn't :( */
		238	CV *cp = Perl_cv_clone (aTHX_ cv);
		239	CvPADLIST (cv) = CvPADLIST (cp);
		240	CvPADLIST (cp) = 0;
		241	SvREFCNT_dec (cp);
		242	#else
295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		244	#endif
		245	}
296	}	246	}
297		247
298	STATIC void	248	static void
299	put_padlist (pTHX_ CV *cv)	249	put_padlist (pTHX_ CV *cv)
300	{	250	{
301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	251	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
302		252
303	if (!mg)	253	if (!mg)
…		…
353	PL_retstack_ix = c->retstack_ix;	303	PL_retstack_ix = c->retstack_ix;
354	PL_retstack_max = c->retstack_max;	304	PL_retstack_max = c->retstack_max;
355	#endif	305	#endif
356	PL_curpm = c->curpm;	306	PL_curpm = c->curpm;
357	PL_curcop = c->curcop;	307	PL_curcop = c->curcop;
358	PL_top_env = c->top_env;
359		308
360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	309	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	310	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	311	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
363		312
…		…
420	}	369	}
421		370
422	PUSHs ((SV *)CvPADLIST(cv));	371	PUSHs ((SV *)CvPADLIST(cv));
423	PUSHs ((SV *)cv);	372	PUSHs ((SV *)cv);
424		373
425	get_padlist (aTHX_ cv); /* this is a monster */	374	get_padlist (aTHX_ cv);
426	}	375	}
427	}	376	}
428	#ifdef CXt_FORMAT	377	#ifdef CXt_FORMAT
429	else if (CxTYPE(cx) == CXt_FORMAT)	378	else if (CxTYPE(cx) == CXt_FORMAT)
430	{	379	{
…		…
481	c->retstack_ix = PL_retstack_ix;	430	c->retstack_ix = PL_retstack_ix;
482	c->retstack_max = PL_retstack_max;	431	c->retstack_max = PL_retstack_max;
483	#endif	432	#endif
484	c->curpm = PL_curpm;	433	c->curpm = PL_curpm;
485	c->curcop = PL_curcop;	434	c->curcop = PL_curcop;
486	c->top_env = PL_top_env;
487	}	435	}
488		436
489	/*	437	/*
490	* allocate various perl stacks. This is an exact copy	438	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	439	* of perl.c:init_stacks, except that it uses less memory
492	* on the (sometimes correct) assumption that coroutines do	440	* on the (sometimes correct) assumption that coroutines do
493	* not usually need a lot of stackspace.	441	* not usually need a lot of stackspace.
494	*/	442	*/
495	STATIC void	443	static void
496	coro_init_stacks (pTHX)	444	coro_init_stacks (pTHX)
497	{	445	{
498	LOCK;	446	LOCK;
499		447
500	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	448	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
537	}	485	}
538		486
539	/*	487	/*
540	* destroy the stacks, the callchain etc...	488	* destroy the stacks, the callchain etc...
541	*/	489	*/
542	STATIC void	490	static void
543	destroy_stacks(pTHX)	491	destroy_stacks(pTHX)
544	{	492	{
545	if (!IN_DESTRUCT)	493	if (!IN_DESTRUCT)
546	{	494	{
547	/* is this ugly, I ask? */	495	/* is this ugly, I ask? */
…		…
585	Safefree (PL_retstack);	533	Safefree (PL_retstack);
586	#endif	534	#endif
587	}	535	}
588		536
589	static void	537	static void
590	allocate_stack (Coro__State ctx, int alloc)	538	setup_coro (struct coro *coro)
591	{
592	coro_stack *stack;
593
594	New (0, stack, 1, coro_stack);
595
596	stack->refcnt = 1;
597	stack->usecnt = 1;
598	stack->gencnt = ctx->gencnt = 0;
599
600	if (alloc)
601	{
602	#if HAVE_MMAP
603	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
604	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
605	if (stack->sptr == (void *)-1)
606	#endif
607	{
608	/FIXME//D//* reasonable stack size! */
609	stack->ssize = - (STACKSIZE * sizeof (long));
610	New (0, stack->sptr, STACKSIZE, long);
611	}
612	}
613	else
614	stack->sptr = 0;
615
616	ctx->stack = stack;
617	}
618
619	static void
620	deallocate_stack (Coro__State ctx)
621	{
622	coro_stack *stack = ctx->stack;
623
624	ctx->stack = 0;
625
626	if (stack)
627	{
628	if (!--stack->refcnt)
629	{
630	#ifdef HAVE_MMAP
631	if (stack->ssize > 0 && stack->sptr)
632	munmap (stack->sptr, stack->ssize);
633	else
634	#endif
635	Safefree (stack->sptr);
636
637	Safefree (stack);
638	}
639	else if (ctx->gencnt == stack->gencnt)
640	--stack->usecnt;
641	}
642	}
643
644	static void
645	setup_coro (void *arg)
646	{	539	{
647	/*	540	/*
648	* emulate part of the perl startup here.	541	* emulate part of the perl startup here.
649	*/	542	*/
650	dTHX;	543	dTHX;
651	dSP;	544	dSP;
652	Coro__State ctx = (Coro__State)arg;	545	UNOP myop;
653	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	546	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
654		547
655	coro_init_stacks (aTHX);	548	coro_init_stacks (aTHX);
656	/PL_curcop = 0;/	549	/PL_curcop = 0;/
657	/PL_in_eval = PL_in_eval;/ /* inherit */	550	/PL_in_eval = PL_in_eval;/ /* inherit */
658	SvREFCNT_dec (GvAV (PL_defgv));	551	SvREFCNT_dec (GvAV (PL_defgv));
659	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	552	GvAV (PL_defgv) = coro->args; coro->args = 0;
660		553
661	SPAGAIN;	554	SPAGAIN;
662		555
663	if (ctx->stack)
664	{
665	ctx->cursp = 0;
666
667	PUSHMARK(SP);
668	PUTBACK;
669	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
670
671	if (SvTRUE (ERRSV))
672	croak (NULL);
673	else
674	croak ("FATAL: CCTXT coroutine returned!");
675	}
676	else
677	{
678	UNOP myop;
679
680	PL_op = (OP *)&myop;
681
682	Zero(&myop, 1, UNOP);	556	Zero (&myop, 1, UNOP);
683	myop.op_next = Nullop;	557	myop.op_next = Nullop;
684	myop.op_flags = OPf_WANT_VOID;	558	myop.op_flags = OPf_WANT_VOID;
685		559
		560	PL_op = (OP *)&myop;
		561
686	PUSHMARK(SP);	562	PUSHMARK(SP);
687	XPUSHs (sub_init);	563	XPUSHs (sub_init);
688	/*
689	* the next line is slightly wrong, as PL_op->op_next
690	* is actually being executed so we skip the first op.
691	* that doesn't matter, though, since it is only
692	* pp_nextstate and we never return...
693	* ah yes, and I don't care anyways ;)
694	*/
695	PUTBACK;	564	PUTBACK;
696	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
697	SPAGAIN;	566	SPAGAIN;
698		567
699	ENTER; /* necessary e.g. for dounwind */	568	ENTER; /* necessary e.g. for dounwind */
700	}
701	}	569	}
702		570
703	static void	571	static void
704	continue_coro (void *arg)	572	free_coro_mortal ()
705	{	573	{
706	/*
707	* this is a _very_ stripped down perl interpreter ;)
708	*/
709	dTHX;
710	Coro__State ctx = (Coro__State)arg;
711	JMPENV coro_start_env;
712
713	PL_top_env = &ctx->start_env;
714
715	ctx->cursp = 0;
716	PL_op = PL_op->op_next;
717	CALLRUNOPS(aTHX);
718
719	abort ();
720	}
721
722	STATIC void
723	transfer (pTHX_ struct coro prev, struct coro next, int flags)
724	{
725	dSTACKLEVEL;
726
727	if (prev != next)
728	{
729	if (next->mainstack)
730	{
731	LOCK;
732	SAVE (prev, flags);
733	LOAD (next);
734	UNLOCK;
735
736	/* mark this state as in-use */
737	next->mainstack = 0;
738	next->tmps_ix = -2;
739
740	/* stacklevel changed? if yes, grab the stack for us! */
741	if (flags & TRANSFER_SAVE_CCTXT)
742	{
743	if (!prev->stack)
744	allocate_stack (prev, 0);
745	else if (prev->cursp != stacklevel
746	&& prev->stack->usecnt > 1)
747	{
748	prev->gencnt = ++prev->stack->gencnt;
749	prev->stack->usecnt = 1;
750	}
751
752	/* has our stack been invalidated? */
753	if (next->stack && next->stack->gencnt != next->gencnt)
754	{
755	deallocate_stack (next);
756	allocate_stack (next, 1);
757	coro_create (&(next->stack->cctx),
758	continue_coro, (void *)next,
759	next->stack->sptr, labs (next->stack->ssize));
760	}
761
762	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
763	prev->cursp = stacklevel;
764	/* don't add any code here */
765	}
766	else
767	next->cursp = stacklevel;
768	}
769	else if (next->tmps_ix == -2)
770	croak ("tried to transfer to running coroutine");
771	else
772	{
773	LOCK;
774	SAVE (prev, -1); /* first get rid of the old state */
775	UNLOCK;
776
777	if (flags & TRANSFER_SAVE_CCTXT)
778	{
779	if (!prev->stack)
780	allocate_stack (prev, 0);
781
782	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
783	{
784	PL_top_env = &next->start_env;
785
786	setup_coro (next);
787	next->cursp = stacklevel;
788
789	prev->stack->refcnt++;
790	prev->stack->usecnt++;
791	next->stack = prev->stack;
792	next->gencnt = prev->gencnt;
793	}
794	else
795	{
796	assert (!next->stack);
797	allocate_stack (next, 1);
798	coro_create (&(next->stack->cctx),
799	setup_coro, (void *)next,
800	next->stack->sptr, labs (next->stack->ssize));
801	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
802	prev->cursp = stacklevel;
803	/* don't add any code here */
804	}
805	}
806	else
807	{
808	setup_coro (next);
809	next->cursp = stacklevel;
810	}
811	}
812	}
813
814	LOCK;
815	if (coro_mortal)	574	if (coro_mortal)
816	{	575	{
817	SvREFCNT_dec (coro_mortal);	576	SvREFCNT_dec (coro_mortal);
818	coro_mortal = 0;	577	coro_mortal = 0;
819	}	578	}
		579	}
		580
		581	static void
		582	coro_run (void *arg)
		583	{
		584	/*
		585	* this is a _very_ stripped down perl interpreter ;)
		586	*/
		587	dTHX;
		588	int ret;
		589
820	UNLOCK;	590	UNLOCK;
821	}
822		591
823	#define SV_CORO(sv,func) \	592	PL_top_env = &PL_start_env;
824	do { \
825	if (SvROK (sv)) \
826	sv = SvRV (sv); \
827	\
828	if (SvTYPE (sv) == SVt_PVHV) \
829	{ \
830	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
831	\
832	if (!he) \
833	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
834	\
835	(sv) = SvRV (HeVAL(he)); \
836	} \
837	\
838	/* must also be changed inside Coro::Cont::yield */ \
839	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
840	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
841	\
842	} while(0)
843		593
844	#define SvSTATE(sv) (struct coro *)SvIV (sv)	594	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
		595	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
845		596
		597	/* continue at cctx_init, without entersub */
		598	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
		599
		600	/* somebody will hit me for both perl_run and PL_restartop */
		601	ret = perl_run (aTHX_ PERL_GET_CONTEXT);
		602	printf ("ret %d\n", ret);//D
		603
		604	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
		605	abort ();
		606	}
		607
		608	static coro_stack *
		609	stack_new ()
		610	{
		611	coro_stack *stack;
		612
		613	New (0, stack, 1, coro_stack);
		614
		615	#if HAVE_MMAP
		616
		617	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		618	/* mmap suppsedly does allocate-on-write for us */
		619	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		620
		621	if (stack->sptr == (void *)-1)
		622	{
		623	perror ("FATAL: unable to mmap stack for coroutine");
		624	_exit (EXIT_FAILURE);
		625	}
		626
		627	# if STACKGUARD
		628	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		629	# endif
		630
		631	#else
		632
		633	stack->ssize = STACKSIZE * (long)sizeof (long);
		634	New (0, stack->sptr, STACKSIZE, long);
		635
		636	if (!stack->sptr)
		637	{
		638	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		639	_exit (EXIT_FAILURE);
		640	}
		641
		642	#endif
		643
		644	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		645
		646	return stack;
		647	}
		648
		649	static void
		650	stack_free (coro_stack *stack)
		651	{
		652	if (!stack \|\| stack == main_stack)
		653	return;
		654
		655	#if HAVE_MMAP
		656	munmap (stack->sptr, stack->ssize);
		657	#else
		658	Safefree (stack->sptr);
		659	#endif
		660
		661	Safefree (stack);
		662	}
		663
		664	static coro_stack *stack_first;
		665
		666	static coro_stack *
		667	stack_get ()
		668	{
		669	coro_stack *stack;
		670
		671	if (stack_first)
		672	{
		673	stack = stack_first;
		674	stack_first = stack->next;
		675	}
		676	else
		677	{
		678	stack = stack_new ();
		679	PL_op = PL_op->op_next;
		680	}
		681
		682	return stack;
		683	}
		684
		685	static void
		686	stack_put (coro_stack *stack)
		687	{
		688	stack->next = stack_first;
		689	stack_first = stack;
		690	}
		691
		692	/* never call directly, always through the coro_state_transfer global variable */
		693	static void
		694	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
		695	{
		696	dSTACKLEVEL;
		697
		698	/* sometimes transfer is only called to set idle_sp */
		699	if (flags == TRANSFER_SET_STACKLEVEL)
		700	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		701	else if (prev != next)
		702	{
		703	coro_stack *prev__stack;
		704
		705	LOCK;
		706
		707	if (next->mainstack)
		708	{
		709	/* coroutine already started */
		710	SAVE (prev, flags);
		711	LOAD (next);
		712	}
		713	else
		714	{
		715	/* need to start coroutine */
		716	/* first get rid of the old state */
		717	SAVE (prev, -1);
		718	/* setup coroutine call */
		719	setup_coro (next);
		720	/* need a stack */
		721	next->stack = 0;
		722	}
		723
		724	prev__stack = prev->stack;
		725
		726	/* possibly "free" the stack */
		727	if (prev__stack->idle_sp == STACKLEVEL)
		728	{
		729	stack_put (prev__stack);
		730	prev->stack = 0;
		731	}
		732
		733	if (!next->stack)
		734	next->stack = stack_get ();
		735
		736	if (prev__stack != next->stack)
		737	{
		738	prev__stack->top_env = PL_top_env;
		739	PL_top_env = next->stack->top_env;
		740	printf ("stacksw %p %p\n", prev__stack->idle_sp, next->stack->idle_sp);//D
		741	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		742	}
		743
		744	free_coro_mortal ();
		745
		746	UNLOCK;
		747	}
		748	}
		749
		750	/* use this function pointer to call the above function */
		751	/* this is done to increase chances of the compiler not inlining the call */
		752	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
		753	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		754
		755	struct transfer_args
		756	{
		757	struct coro prev, next;
		758	int flags;
		759	};
		760
		761	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)
		762
		763	static void
		764	coro_state_destroy (struct coro *coro)
		765	{
		766	if (coro->refcnt--)
		767	return;
		768
		769	if (coro->mainstack && coro->mainstack != main_mainstack)
		770	{
		771	struct coro temp;
		772
		773	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		774	LOAD (aTHX_ coro);
		775
		776	destroy_stacks (aTHX);
		777
		778	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		779
		780	coro->mainstack = 0;
		781	}
		782
		783	stack_free (coro->stack);
		784	SvREFCNT_dec (coro->args);
		785	Safefree (coro);
		786	}
		787
846	static void	788	static int
		789	coro_state_clear (SV sv, MAGIC mg)
		790	{
		791	struct coro coro = (struct coro )mg->mg_ptr;
		792	mg->mg_ptr = 0;
		793
		794	coro_state_destroy (coro);
		795
		796	return 0;
		797	}
		798
		799	static int
		800	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		801	{
		802	struct coro coro = (struct coro )mg->mg_ptr;
		803
		804	++coro->refcnt;
		805
		806	return 0;
		807	}
		808
		809	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		810
		811	static struct coro *
		812	SvSTATE (SV *coro)
		813	{
		814	HV *stash;
		815	MAGIC *mg;
		816
		817	if (SvROK (coro))
		818	coro = SvRV (coro);
		819
		820	stash = SvSTASH (coro);
		821	if (stash != coro_stash && stash != coro_state_stash)
		822	{
		823	/* very slow, but rare, check */
		824	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		825	croak ("Coro::State object required");
		826	}
		827
		828	mg = SvMAGIC (coro);
		829	assert (mg->mg_type == PERL_MAGIC_ext);
		830	return (struct coro *)mg->mg_ptr;
		831	}
		832
		833	static void
		834	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)
		835	{
		836	ta->prev = SvSTATE (prev);
		837	ta->next = SvSTATE (next);
		838	ta->flags = flags;
		839	}
		840
		841	static void
847	api_transfer(pTHX_ SV prev, SV next, int flags)	842	api_transfer (SV prev, SV next, int flags)
848	{	843	{
849	SV_CORO (prev, "Coro::transfer");	844	dTHX;
850	SV_CORO (next, "Coro::transfer");	845	struct transfer_args ta;
851		846
852	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	847	prepare_transfer (aTHX_ &ta, prev, next, flags);
		848	TRANSFER (ta);
853	}	849	}
854		850
855	/ Coro ******************************************************************/	851	/ Coro ******************************************************************/
856		852
857	#define PRIO_MAX 3	853	#define PRIO_MAX 3
…		…
861	#define PRIO_IDLE -3	857	#define PRIO_IDLE -3
862	#define PRIO_MIN -4	858	#define PRIO_MIN -4
863		859
864	/* for Coro.pm */	860	/* for Coro.pm */
865	static GV coro_current, coro_idle;	861	static GV coro_current, coro_idle;
866	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	862	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
867	static int coro_nready;	863	static int coro_nready;
868		864
869	static void	865	static void
870	coro_enq (pTHX_ SV *sv)	866	coro_enq (pTHX_ SV *sv)
871	{	867	{
		868	int prio;
		869
872	if (SvTYPE (sv) == SVt_PVHV)	870	if (SvTYPE (sv) != SVt_PVHV)
873	{
874	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
875	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
876
877	prio = prio > PRIO_MAX ? PRIO_MAX
878	: prio < PRIO_MIN ? PRIO_MIN
879	: prio;
880
881	av_push (coro_ready [prio - PRIO_MIN], sv);
882	coro_nready++;
883
884	return;
885	}
886
887	croak ("Coro::ready tried to enqueue something that is not a coroutine");	871	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		872
		873	prio = SvSTATE (sv)->prio;
		874
		875	av_push (coro_ready [prio - PRIO_MIN], sv);
		876	coro_nready++;
888	}	877	}
889		878
890	static SV *	879	static SV *
891	coro_deq (pTHX_ int min_prio)	880	coro_deq (pTHX_ int min_prio)
892	{	881	{
…		…
895	min_prio -= PRIO_MIN;	884	min_prio -= PRIO_MIN;
896	if (min_prio < 0)	885	if (min_prio < 0)
897	min_prio = 0;	886	min_prio = 0;
898		887
899	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	888	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
900	if (av_len (coro_ready[prio]) >= 0)	889	if (AvFILLp (coro_ready [prio]) >= 0)
901	{	890	{
902	coro_nready--;	891	coro_nready--;
903	return av_shift (coro_ready[prio]);	892	return av_shift (coro_ready [prio]);
904	}	893	}
905		894
906	return 0;	895	return 0;
907	}	896	}
908		897
…		…
918	coro_enq (aTHX_ SvREFCNT_inc (coro));	907	coro_enq (aTHX_ SvREFCNT_inc (coro));
919	UNLOCK;	908	UNLOCK;
920	}	909	}
921		910
922	static void	911	static void
923	api_schedule (void)	912	prepare_schedule (aTHX_ struct transfer_args *ta)
924	{	913	{
925	dTHX;
926
927	SV prev, next;	914	SV current, prev, *next;
928		915
929	LOCK;	916	LOCK;
930		917
931	prev = SvRV (GvSV (coro_current));	918	current = GvSV (coro_current);
		919
		920	for (;;)
		921	{
		922	LOCK;
		923
932	next = coro_deq (aTHX_ PRIO_MIN);	924	next = coro_deq (aTHX_ PRIO_MIN);
933		925
934	if (!next)	926	if (next)
935	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	927	break;
		928
		929	UNLOCK;
		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;
936		948
937	/* free this only after the transfer */	949	/* free this only after the transfer */
		950	free_coro_mortal ();
938	coro_mortal = prev;	951	coro_mortal = prev;
939	SV_CORO (prev, "Coro::schedule");
940		952
941	SvRV (GvSV (coro_current)) = next;	953	ta->prev = SvSTATE (prev);
942		954	ta->next = SvSTATE (next);
943	SV_CORO (next, "Coro::schedule");	955	ta->flags = TRANSFER_SAVE_ALL;
944		956
945	UNLOCK;	957	UNLOCK;
946
947	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
948	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
949	}	958	}
950		959
951	static void	960	static void
952	api_cede (void)	961	prepare_cede (aTHX_ struct transfer_args *ta)
953	{	962	{
954	dTHX;
955
956	LOCK;	963	LOCK;
957	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	964	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
958	UNLOCK;	965	UNLOCK;
959		966
		967	prepare_schedule (ta);
		968	}
		969
		970	static void
960	api_schedule ();	971	api_schedule (void)
		972	{
		973	dTHX;
		974	struct transfer_args ta;
		975
		976	prepare_schedule (&ta);
		977	TRANSFER (ta);
		978	}
		979
		980	static void
		981	api_cede (void)
		982	{
		983	dTHX;
		984	struct transfer_args ta;
		985
		986	prepare_cede (&ta);
		987	TRANSFER (ta);
961	}	988	}
962		989
963	MODULE = Coro::State PACKAGE = Coro::State	990	MODULE = Coro::State PACKAGE = Coro::State
964		991
965	PROTOTYPES: ENABLE	992	PROTOTYPES: DISABLE
966		993
967	BOOT:	994	BOOT:
968	{ /* {} necessary for stoopid perl-5.6.x */	995	{
969	#ifdef USE_ITHREADS	996	#ifdef USE_ITHREADS
970	MUTEX_INIT (&coro_mutex);	997	MUTEX_INIT (&coro_mutex);
971	#endif	998	#endif
		999	BOOT_PAGESIZE;
972		1000
973	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
974	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
975	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
976		1002
977	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
978	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
979	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1005	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
980	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
981		1006
982	main_mainstack = PL_mainstack;	1007	main_mainstack = PL_mainstack;
983		1008
984	coroapi.ver = CORO_API_VERSION;	1009	coroapi.ver = CORO_API_VERSION;
985	coroapi.transfer = api_transfer;	1010	coroapi.transfer = api_transfer;
986	}
987		1011
988	Coro::State	1012	Newz (0, main_stack, 1, coro_stack);
989	_newprocess(args)	1013	main_stack->idle_sp = (void *)-1;
990	SV * args	1014
991	PROTOTYPE: $	1015	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		1016	}
		1017
		1018	SV *
		1019	new (char *klass, ...)
992	CODE:	1020	CODE:
993	Coro__State coro;	1021	{
		1022	struct coro *coro;
		1023	HV *hv;
		1024	int i;
994		1025
995	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
996	croak ("Coro::State::_newprocess expects an arrayref");
997
998	Newz (0, coro, 1, struct coro);	1026	Newz (0, coro, 1, struct coro);
		1027	coro->args = newAV ();
999		1028
1000	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1029	hv = newHV ();
		1030	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1031	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1032
		1033	for (i = 1; i < items; i++)
		1034	av_push (coro->args, newSVsv (ST (i)));
		1035
		1036	coro->stack = main_stack;
1001	/coro->mainstack = 0; //actual work is done inside transfer /	1037	/coro->mainstack = 0; //actual work is done inside transfer /
1002	/coro->stack = 0;/	1038	/coro->stack = 0;/
1003		1039	}
1004	/* same as JMPENV_BOOTSTRAP */
1005	/* we might be able to recycle start_env, but safe is safe */
1006	/Zero(&coro->start_env, 1, JMPENV);/
1007	coro->start_env.je_ret = -1;
1008	coro->start_env.je_mustcatch = TRUE;
1009
1010	RETVAL = coro;
1011	OUTPUT:	1040	OUTPUT:
1012	RETVAL	1041	RETVAL
1013		1042
1014	void	1043	void
1015	transfer(prev, next, flags)	1044	_set_stacklevel (...)
1016	SV *prev	1045	ALIAS:
1017	SV *next	1046	Coro::State::transfer = 1
1018	int flags	1047	Coro::schedule = 2
1019	PROTOTYPE: @	1048	Coro::cede = 3
		1049	Coro::Cont::yield = 4
1020	CODE:	1050	CODE:
1021	PUTBACK;	1051	{
1022	SV_CORO (next, "Coro::transfer");	1052	struct transfer_args ta;
1023	SV_CORO (prev, "Coro::transfer");	1053
1024	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1054	switch (ix)
1025	SPAGAIN;	1055	{
		1056	case 0:
		1057	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1058	ta.next = 0;
		1059	ta.flags = TRANSFER_SET_STACKLEVEL;
		1060	break;
		1061
		1062	case 1:
		1063	if (items != 3)
		1064	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1065
		1066	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1067	break;
		1068
		1069	case 2:
		1070	prepare_schedule (&ta);
		1071	break;
		1072
		1073	case 3:
		1074	prepare_cede (&ta);
		1075	break;
		1076
		1077	case 4:
		1078	{
		1079	SV *yieldstack;
		1080	SV *sv;
		1081	AV *defav = GvAV (PL_defgv);
		1082
		1083	yieldstack = *hv_fetch (
		1084	(HV *)SvRV (GvSV (coro_current)),
		1085	"yieldstack", sizeof ("yieldstack") - 1,
		1086	0
		1087	);
		1088
		1089	/* set up @_ -- ugly */
		1090	av_clear (defav);
		1091	av_fill (defav, items - 1);
		1092	while (items--)
		1093	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1094
		1095	sv = av_pop ((AV *)SvRV (yieldstack));
		1096	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1097	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1098	ta.flags = 0;
		1099	SvREFCNT_dec (sv);
		1100	}
		1101	break;
		1102
		1103	}
		1104
		1105	TRANSFER (ta);
		1106	}
1026		1107
1027	void	1108	void
1028	DESTROY(coro)	1109	_clone_state_from (SV dst, SV src)
1029	Coro::State coro	1110	CODE:
1030	CODE:	1111	{
		1112	struct coro *coro_src = SvSTATE (src);
1031		1113
1032	if (coro->mainstack && coro->mainstack != main_mainstack)	1114	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1033	{
1034	struct coro temp;
1035		1115
1036	PUTBACK;	1116	++coro_src->refcnt;
1037	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1117	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1038	LOAD (aTHX_ coro);	1118	}
1039	SPAGAIN;
1040
1041	destroy_stacks (aTHX);
1042
1043	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1044	SPAGAIN;
1045
1046	coro->mainstack = 0;
1047	}
1048
1049	deallocate_stack (coro);
1050	SvREFCNT_dec (coro->args);
1051	Safefree (coro);
1052		1119
1053	void	1120	void
		1121	_nonlocal_goto (IV nextop)
		1122	CODE:
		1123	/* uuh, somebody will kill me again for this */
		1124	PL_op->op_next = INT2PTR (OP *, nextop);
		1125
		1126	void
1054	_exit(code)	1127	_exit (code)
1055	int code	1128	int code
1056	PROTOTYPE: $	1129	PROTOTYPE: $
1057	CODE:	1130	CODE:
1058	_exit (code);	1131	_exit (code);
1059		1132
1060	MODULE = Coro::State PACKAGE = Coro::Cont
1061
1062	# this is slightly dirty (should expose a c-level api)
1063
1064	void
1065	yield(...)
1066	PROTOTYPE: @
1067	CODE:
1068	SV *yieldstack;
1069	SV *sv;
1070	AV *defav = GvAV (PL_defgv);
1071	struct coro prev, next;
1072
1073	yieldstack = *hv_fetch (
1074	(HV *)SvRV (GvSV (coro_current)),
1075	"yieldstack", sizeof ("yieldstack") - 1,
1076	0
1077	);
1078
1079	/* set up @_ -- ugly */
1080	av_clear (defav);
1081	av_fill (defav, items - 1);
1082	while (items--)
1083	av_store (defav, items, SvREFCNT_inc (ST(items)));
1084
1085	sv = av_pop ((AV *)SvRV (yieldstack));
1086	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
1087	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
1088	SvREFCNT_dec (sv);
1089
1090	transfer (aTHX_ prev, next, 0);
1091
1092	MODULE = Coro::State PACKAGE = Coro	1133	MODULE = Coro::State PACKAGE = Coro
1093		1134
1094	# this is slightly dirty (should expose a c-level api)
1095
1096	BOOT:	1135	BOOT:
1097	{	1136	{
1098	int i;	1137	int i;
		1138
1099	HV *stash = gv_stashpv ("Coro", TRUE);	1139	coro_stash = gv_stashpv ("Coro", TRUE);
1100		1140
1101	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1141	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1102	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1142	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1103	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1143	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1104	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1144	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1105	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1145	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1106	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1146	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1107		1147
1108	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1148	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1109	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1149	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1110		1150
1111	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1151	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1119	coroapi.ready = api_ready;	1159	coroapi.ready = api_ready;
1120	coroapi.nready = &coro_nready;	1160	coroapi.nready = &coro_nready;
1121	coroapi.current = coro_current;	1161	coroapi.current = coro_current;
1122		1162
1123	GCoroAPI = &coroapi;	1163	GCoroAPI = &coroapi;
1124	sv_setiv(sv, (IV)&coroapi);	1164	sv_setiv (sv, (IV)&coroapi);
1125	SvREADONLY_on(sv);	1165	SvREADONLY_on (sv);
1126	}	1166	}
1127	}	1167	}
1128		1168
1129	#if !PERL_MICRO	1169	int
		1170	prio (Coro::State coro, int newprio = 0)
		1171	ALIAS:
		1172	nice = 1
		1173	CODE:
		1174	{
		1175	RETVAL = coro->prio;
		1176
		1177	if (items > 1)
		1178	{
		1179	if (ix)
		1180	newprio += coro->prio;
		1181
		1182	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1183	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1184
		1185	coro->prio = newprio;
		1186	}
		1187	}
1130		1188
1131	void	1189	void
1132	ready(self)	1190	ready (SV *self)
1133	SV * self
1134	PROTOTYPE: $	1191	PROTOTYPE: $
1135	CODE:	1192	CODE:
1136	api_ready (self);	1193	api_ready (self);
1137		1194
1138	#endif
1139
1140	int	1195	int
1141	nready(...)	1196	nready (...)
1142	PROTOTYPE:	1197	PROTOTYPE:
1143	CODE:	1198	CODE:
1144	RETVAL = coro_nready;	1199	RETVAL = coro_nready;
1145	OUTPUT:	1200	OUTPUT:
1146	RETVAL	1201	RETVAL
1147		1202
1148	void	1203	MODULE = Coro::State PACKAGE = Coro::AIO
1149	schedule(...)
1150	PROTOTYPE:
1151	CODE:
1152	api_schedule ();
1153		1204
1154	void
1155	cede(...)
1156	PROTOTYPE:
1157	CODE:
1158	api_cede ();
1159
1160	# and these are hacks
1161	SV *	1205	SV *
1162	_aio_get_state ()	1206	_get_state ()
1163	CODE:	1207	CODE:
1164	{	1208	{
1165	struct {	1209	struct {
1166	int errorno;	1210	int errorno;
1167	int laststype;	1211	int laststype;
…		…
1178	}	1222	}
1179	OUTPUT:	1223	OUTPUT:
1180	RETVAL	1224	RETVAL
1181		1225
1182	void	1226	void
1183	_aio_set_state (char *data_)	1227	_set_state (char *data_)
1184	PROTOTYPE: $	1228	PROTOTYPE: $
1185	CODE:	1229	CODE:
1186	{	1230	{
1187	struct {	1231	struct {
1188	int errorno;	1232	int errorno;

Diff Legend

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

Comparing Coro/Coro/State.xs (file contents): Revision 1.72 by root, Wed Feb 1 23:59:41 2006 UTC vs. Revision 1.94 by root, Sun Nov 26 17:14:15 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.72 by root, Wed Feb 1 23:59:41 2006 UTC vs.
Revision 1.94 by root, Sun Nov 26 17:14:15 2006 UTC