[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 1.92 by root, Sun Nov 26 02:16:19 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))	71	#define labs(l) ((l) >= 0 ? (l) : -(l))
58		72
59	#include "CoroAPI.h"	73	#include "CoroAPI.h"
		74
		75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
60		76
61	#ifdef USE_ITHREADS	77	#ifdef USE_ITHREADS
62	static perl_mutex coro_mutex;	78	static perl_mutex coro_mutex;
63	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	79	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
64	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	80	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
67	# define UNLOCK (void)0	83	# define UNLOCK (void)0
68	#endif	84	#endif
69		85
70	static struct CoroAPI coroapi;	86	static struct CoroAPI coroapi;
71	static AV main_mainstack; / used to differentiate between $main and others */	87	static AV main_mainstack; / used to differentiate between $main and others */
72	static HV *coro_state_stash;	88	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 */	89	static SV coro_mortal; / will be freed after next transfer */
76		90
77	/* this is actually not only the c stack but also c registers etc... */	91	/* this is a structure representing a c-level coroutine */
78	typedef struct {	92	typedef struct coro_stack {
79	int refcnt; /* pointer reference counter */	93	struct coro_stack *next;
80	int usecnt; /* shared by how many coroutines */
81	int gencnt; /* generation counter */
82		94
83	coro_context cctx;	95	void idle_sp; / original stacklevel when coroutine was created */
84
85	void *sptr;	96	void *sptr;
86	long ssize; /* positive == mmap, otherwise malloc */	97	long ssize; /* positive == mmap, otherwise malloc */
		98
		99	/* cpu state */
		100	coro_context cctx;
		101	JMPENV *top_env;
87	} coro_stack;	102	} coro_stack;
88		103
		104	/* the (fake) coro_stack representing the main program */
		105	static coro_stack *main_stack;
		106
		107	/* this is a structure representing a perl-level coroutine */
89	struct coro {	108	struct coro {
90	/* the top-level JMPENV for each coroutine, needed to catch dies. */	109	/* the c coroutine allocated to this perl coroutine, if any */
91	JMPENV start_env;
92
93	/* the optional C context */
94	coro_stack *stack;	110	coro_stack *stack;
95	void *cursp;	111
		112	/* data associated with this coroutine (initial args) */
		113	AV *args;
96	int gencnt;	114	int refcnt;
97		115
98	/* optionally saved, might be zero */	116	/* optionally saved, might be zero */
99	AV *defav;	117	AV *defav;
100	SV *defsv;	118	SV *defsv;
101	SV *errsv;	119	SV *errsv;
…		…
131	OP **retstack;	149	OP **retstack;
132	I32 retstack_ix;	150	I32 retstack_ix;
133	I32 retstack_max;	151	I32 retstack_max;
134	PMOP *curpm;	152	PMOP *curpm;
135	COP *curcop;	153	COP *curcop;
136	JMPENV *top_env;
137		154
138	/* data associated with this coroutine (initial args) */	155	/* coro process data */
139	AV *args;	156	int prio;
140	};	157	};
141		158
142	typedef struct coro *Coro__State;	159	typedef struct coro *Coro__State;
143	typedef struct coro *Coro__State_or_hashref;	160	typedef struct coro *Coro__State_or_hashref;
144		161
145	/* mostly copied from op.c:cv_clone2 */	162	static AV *
146	STATIC AV *	163	coro_clone_padlist (pTHX_ CV *cv)
147	clone_padlist (pTHX_ AV *protopadlist)
148	{	164	{
149	AV *av;	165	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;	166	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		167
168	newpadlist = newAV ();	168	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	169	AvREAL_off (newpadlist);
170	av_store (newpadlist, 0, (SV *) newpad_name);	170	#if PERL_VERSION < 9
		171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		172	#else
		173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		174	#endif
		175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		176	--AvFILLp (padlist);
		177
		178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
171	av_store (newpadlist, 1, (SV *) newpad);	179	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		180
242	return newpadlist;	181	return newpadlist;
243	}	182	}
244		183
245	STATIC void	184	static void
246	free_padlist (pTHX_ AV *padlist)	185	free_padlist (pTHX_ AV *padlist)
247	{	186	{
248	/* may be during global destruction */	187	/* may be during global destruction */
249	if (SvREFCNT (padlist))	188	if (SvREFCNT (padlist))
250	{	189	{
…		…
264		203
265	SvREFCNT_dec ((SV*)padlist);	204	SvREFCNT_dec ((SV*)padlist);
266	}	205	}
267	}	206	}
268		207
269	STATIC int	208	static int
270	coro_cv_free (pTHX_ SV sv, MAGIC mg)	209	coro_cv_free (pTHX_ SV sv, MAGIC mg)
271	{	210	{
272	AV *padlist;	211	AV *padlist;
273	AV av = (AV )mg->mg_obj;	212	AV av = (AV )mg->mg_obj;
274		213
275	/* casting is fun. */	214	/* casting is fun. */
276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
277	free_padlist (aTHX_ padlist);	216	free_padlist (aTHX_ padlist);
278		217
279	SvREFCNT_dec (av);	218	SvREFCNT_dec (av);
		219
		220	return 0;
280	}	221	}
281		222
282	#define PERL_MAGIC_coro PERL_MAGIC_ext	223	#define PERL_MAGIC_coro PERL_MAGIC_ext
283		224
284	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
285		226
286	/* the next two functions merely cache the padlists */	227	/* the next two functions merely cache the padlists */
287	STATIC void	228	static void
288	get_padlist (pTHX_ CV *cv)	229	get_padlist (pTHX_ CV *cv)
289	{	230	{
290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	231	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
291		232
292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	233	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	234	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
294	else	235	else
		236	{
		237	#if 0
		238	/* this should work - but it doesn't :( */
		239	CV *cp = Perl_cv_clone (aTHX_ cv);
		240	CvPADLIST (cv) = CvPADLIST (cp);
		241	CvPADLIST (cp) = 0;
		242	SvREFCNT_dec (cp);
		243	#else
295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	244	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		245	#endif
		246	}
296	}	247	}
297		248
298	STATIC void	249	static void
299	put_padlist (pTHX_ CV *cv)	250	put_padlist (pTHX_ CV *cv)
300	{	251	{
301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	252	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
302		253
303	if (!mg)	254	if (!mg)
…		…
353	PL_retstack_ix = c->retstack_ix;	304	PL_retstack_ix = c->retstack_ix;
354	PL_retstack_max = c->retstack_max;	305	PL_retstack_max = c->retstack_max;
355	#endif	306	#endif
356	PL_curpm = c->curpm;	307	PL_curpm = c->curpm;
357	PL_curcop = c->curcop;	308	PL_curcop = c->curcop;
358	PL_top_env = c->top_env;
359		309
360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
363		313
…		…
420	}	370	}
421		371
422	PUSHs ((SV *)CvPADLIST(cv));	372	PUSHs ((SV *)CvPADLIST(cv));
423	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
424		374
425	get_padlist (aTHX_ cv); /* this is a monster */	375	get_padlist (aTHX_ cv);
426	}	376	}
427	}	377	}
428	#ifdef CXt_FORMAT	378	#ifdef CXt_FORMAT
429	else if (CxTYPE(cx) == CXt_FORMAT)	379	else if (CxTYPE(cx) == CXt_FORMAT)
430	{	380	{
…		…
481	c->retstack_ix = PL_retstack_ix;	431	c->retstack_ix = PL_retstack_ix;
482	c->retstack_max = PL_retstack_max;	432	c->retstack_max = PL_retstack_max;
483	#endif	433	#endif
484	c->curpm = PL_curpm;	434	c->curpm = PL_curpm;
485	c->curcop = PL_curcop;	435	c->curcop = PL_curcop;
486	c->top_env = PL_top_env;
487	}	436	}
488		437
489	/*	438	/*
490	* allocate various perl stacks. This is an exact copy	439	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	440	* of perl.c:init_stacks, except that it uses less memory
492	* on the (sometimes correct) assumption that coroutines do	441	* on the (sometimes correct) assumption that coroutines do
493	* not usually need a lot of stackspace.	442	* not usually need a lot of stackspace.
494	*/	443	*/
495	STATIC void	444	static void
496	coro_init_stacks (pTHX)	445	coro_init_stacks (pTHX)
497	{	446	{
498	LOCK;	447	LOCK;
499		448
500	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
537	}	486	}
538		487
539	/*	488	/*
540	* destroy the stacks, the callchain etc...	489	* destroy the stacks, the callchain etc...
541	*/	490	*/
542	STATIC void	491	static void
543	destroy_stacks(pTHX)	492	destroy_stacks(pTHX)
544	{	493	{
545	if (!IN_DESTRUCT)	494	if (!IN_DESTRUCT)
546	{	495	{
547	/* is this ugly, I ask? */	496	/* is this ugly, I ask? */
…		…
585	Safefree (PL_retstack);	534	Safefree (PL_retstack);
586	#endif	535	#endif
587	}	536	}
588		537
589	static void	538	static void
590	allocate_stack (Coro__State ctx, int alloc)	539	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	{	540	{
647	/*	541	/*
648	* emulate part of the perl startup here.	542	* emulate part of the perl startup here.
649	*/	543	*/
650	dTHX;	544	dTHX;
651	dSP;	545	dSP;
652	Coro__State ctx = (Coro__State)arg;	546	UNOP myop;
653	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
654		548
655	coro_init_stacks (aTHX);	549	coro_init_stacks (aTHX);
656	/PL_curcop = 0;/	550	/PL_curcop = 0;/
657	/PL_in_eval = PL_in_eval;/ /* inherit */	551	/PL_in_eval = PL_in_eval;/ /* inherit */
658	SvREFCNT_dec (GvAV (PL_defgv));	552	SvREFCNT_dec (GvAV (PL_defgv));
659	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	553	GvAV (PL_defgv) = coro->args; coro->args = 0;
660		554
661	SPAGAIN;	555	SPAGAIN;
662		556
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);	557	Zero (&myop, 1, UNOP);
683	myop.op_next = Nullop;	558	myop.op_next = Nullop;
684	myop.op_flags = OPf_WANT_VOID;	559	myop.op_flags = OPf_WANT_VOID;
685		560
		561	PL_op = (OP *)&myop;
		562
686	PUSHMARK(SP);	563	PUSHMARK(SP);
687	XPUSHs (sub_init);	564	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;	565	PUTBACK;
696	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
697	SPAGAIN;	567	SPAGAIN;
698		568
699	ENTER; /* necessary e.g. for dounwind */	569	ENTER; /* necessary e.g. for dounwind */
700	}
701	}	570	}
702		571
703	static void	572	static void
704	continue_coro (void *arg)	573	free_coro_mortal ()
705	{	574	{
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)	575	if (coro_mortal)
816	{	576	{
817	SvREFCNT_dec (coro_mortal);	577	SvREFCNT_dec (coro_mortal);
818	coro_mortal = 0;	578	coro_mortal = 0;
819	}	579	}
		580	}
		581
		582	static void
		583	coro_run (void *arg)
		584	{
		585	/*
		586	* this is a _very_ stripped down perl interpreter ;)
		587	*/
		588	dTHX;
		589	PL_top_env = &PL_start_env;
		590
820	UNLOCK;	591	UNLOCK;
821	}
822		592
823	#define SV_CORO(sv,func) \	593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
824	do { \	594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
825	if (SvROK (sv)) \	595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
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		596
844	#define SvSTATE(sv) (struct coro *)SvIV (sv)	597	/* somebody will hit me for both perl_run and PL_restart_op */
		598	perl_run (aTHX_ PERL_GET_CONTEXT);
845		599
		600	abort ();
		601	}
		602
		603	static coro_stack *
		604	stack_new ()
		605	{
		606	coro_stack *stack;
		607
		608	New (0, stack, 1, coro_stack);
		609
		610	#if HAVE_MMAP
		611
		612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
		613	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		614
		615	if (stack->sptr == (void *)-1)
		616	{
		617	perror ("FATAL: unable to mmap stack for coroutine");
		618	_exit (EXIT_FAILURE);
		619	}
		620
		621	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		622
		623	#else
		624
		625	stack->ssize = STACKSIZE * (long)sizeof (long);
		626	New (0, stack->sptr, STACKSIZE, long);
		627
		628	if (!stack->sptr)
		629	{
		630	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		631	_exit (EXIT_FAILURE);
		632	}
		633
		634	#endif
		635
		636	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		637
		638	return stack;
		639	}
		640
		641	static void
		642	stack_free (coro_stack *stack)
		643	{
		644	if (!stack \|\| stack == main_stack)
		645	return;
		646
		647	#if HAVE_MMAP
		648	munmap (stack->sptr, stack->ssize);
		649	#else
		650	Safefree (stack->sptr);
		651	#endif
		652
		653	Safefree (stack);
		654	}
		655
		656	static coro_stack *stack_first;
		657
		658	static coro_stack *
		659	stack_get ()
		660	{
		661	coro_stack *stack;
		662
		663	if (stack_first)
		664	{
		665	stack = stack_first;
		666	stack_first = stack->next;
		667	}
		668	else
		669	{
		670	stack = stack_new ();
		671	PL_op = PL_op->op_next;
		672	}
		673
		674	return stack;
		675	}
		676
		677	static void
		678	stack_put (coro_stack *stack)
		679	{
		680	stack->next = stack_first;
		681	stack_first = stack;
		682	}
		683
		684	/* never call directly, always through the coro_state_transfer global variable */
		685	static void
		686	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
		687	{
		688	dSTACKLEVEL;
		689
		690	/* sometimes transfer is only called to set idle_sp */
		691	if (flags == TRANSFER_SET_STACKLEVEL)
		692	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		693	else if (prev != next)
		694	{
		695	coro_stack *prev__stack;
		696
		697	LOCK;
		698
		699	if (next->mainstack)
		700	{
		701	/* coroutine already started */
		702	SAVE (prev, flags);
		703	LOAD (next);
		704	}
		705	else
		706	{
		707	/* need to start coroutine */
		708	/* first get rid of the old state */
		709	SAVE (prev, -1);
		710	/* setup coroutine call */
		711	setup_coro (next);
		712	/* need a stack */
		713	next->stack = 0;
		714	}
		715
		716	prev__stack = prev->stack;
		717
		718	/* possibly "free" the stack */
		719	if (prev__stack->idle_sp == STACKLEVEL)
		720	{
		721	stack_put (prev__stack);
		722	prev->stack = 0;
		723	}
		724
		725	if (!next->stack)
		726	next->stack = stack_get ();
		727
		728	if (prev__stack != next->stack)
		729	{
		730	prev__stack->top_env = PL_top_env;
		731	PL_top_env = next->stack->top_env;
		732	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		733	}
		734
		735	free_coro_mortal ();
		736
		737	UNLOCK;
		738	}
		739	}
		740
		741	/* use this function pointer to call the above function */
		742	/* this is done to increase chances of the compiler not inlining the call */
		743	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
		744	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		745
		746	struct transfer_args
		747	{
		748	struct coro prev, next;
		749	int flags;
		750	};
		751
		752	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)
		753
		754	static void
		755	coro_state_destroy (struct coro *coro)
		756	{
		757	if (coro->refcnt--)
		758	return;
		759
		760	if (coro->mainstack && coro->mainstack != main_mainstack)
		761	{
		762	struct coro temp;
		763
		764	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		765	LOAD (aTHX_ coro);
		766
		767	destroy_stacks (aTHX);
		768
		769	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		770
		771	coro->mainstack = 0;
		772	}
		773
		774	stack_free (coro->stack);
		775	SvREFCNT_dec (coro->args);
		776	Safefree (coro);
		777	}
		778
846	static void	779	static int
		780	coro_state_clear (SV sv, MAGIC mg)
		781	{
		782	struct coro coro = (struct coro )mg->mg_ptr;
		783	mg->mg_ptr = 0;
		784
		785	coro_state_destroy (coro);
		786
		787	return 0;
		788	}
		789
		790	static int
		791	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		792	{
		793	struct coro coro = (struct coro )mg->mg_ptr;
		794
		795	++coro->refcnt;
		796
		797	return 0;
		798	}
		799
		800	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		801
		802	static struct coro *
		803	SvSTATE (SV *coro)
		804	{
		805	HV *stash;
		806	MAGIC *mg;
		807
		808	if (SvROK (coro))
		809	coro = SvRV (coro);
		810
		811	stash = SvSTASH (coro);
		812	if (stash != coro_stash && stash != coro_state_stash)
		813	{
		814	/* very slow, but rare, check */
		815	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		816	croak ("Coro::State object required");
		817	}
		818
		819	mg = SvMAGIC (coro);
		820	assert (mg->mg_type == PERL_MAGIC_ext);
		821	return (struct coro *)mg->mg_ptr;
		822	}
		823
		824	static void
		825	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)
		826	{
		827	ta->prev = SvSTATE (prev);
		828	ta->next = SvSTATE (next);
		829	ta->flags = flags;
		830	}
		831
		832	static void
847	api_transfer(pTHX_ SV prev, SV next, int flags)	833	api_transfer (SV prev, SV next, int flags)
848	{	834	{
849	SV_CORO (prev, "Coro::transfer");	835	dTHX;
850	SV_CORO (next, "Coro::transfer");	836	struct transfer_args ta;
851		837
852	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	838	prepare_transfer (aTHX_ &ta, prev, next, flags);
		839	TRANSFER (ta);
853	}	840	}
854		841
855	/ Coro ******************************************************************/	842	/ Coro ******************************************************************/
856		843
857	#define PRIO_MAX 3	844	#define PRIO_MAX 3
…		…
861	#define PRIO_IDLE -3	848	#define PRIO_IDLE -3
862	#define PRIO_MIN -4	849	#define PRIO_MIN -4
863		850
864	/* for Coro.pm */	851	/* for Coro.pm */
865	static GV coro_current, coro_idle;	852	static GV coro_current, coro_idle;
866	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	853	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
867	static int coro_nready;	854	static int coro_nready;
868		855
869	static void	856	static void
870	coro_enq (pTHX_ SV *sv)	857	coro_enq (pTHX_ SV *sv)
871	{	858	{
		859	int prio;
		860
872	if (SvTYPE (sv) == SVt_PVHV)	861	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");	862	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		863
		864	prio = SvSTATE (sv)->prio;
		865
		866	av_push (coro_ready [prio - PRIO_MIN], sv);
		867	coro_nready++;
888	}	868	}
889		869
890	static SV *	870	static SV *
891	coro_deq (pTHX_ int min_prio)	871	coro_deq (pTHX_ int min_prio)
892	{	872	{
…		…
895	min_prio -= PRIO_MIN;	875	min_prio -= PRIO_MIN;
896	if (min_prio < 0)	876	if (min_prio < 0)
897	min_prio = 0;	877	min_prio = 0;
898		878
899	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	879	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
900	if (av_len (coro_ready[prio]) >= 0)	880	if (AvFILLp (coro_ready [prio]) >= 0)
901	{	881	{
902	coro_nready--;	882	coro_nready--;
903	return av_shift (coro_ready[prio]);	883	return av_shift (coro_ready [prio]);
904	}	884	}
905		885
906	return 0;	886	return 0;
907	}	887	}
908		888
…		…
918	coro_enq (aTHX_ SvREFCNT_inc (coro));	898	coro_enq (aTHX_ SvREFCNT_inc (coro));
919	UNLOCK;	899	UNLOCK;
920	}	900	}
921		901
922	static void	902	static void
923	api_schedule (void)	903	prepare_schedule (aTHX_ struct transfer_args *ta)
924	{	904	{
925	dTHX;
926
927	SV prev, next;	905	SV current, prev, *next;
928		906
929	LOCK;	907	LOCK;
930		908
931	prev = SvRV (GvSV (coro_current));	909	current = GvSV (coro_current);
		910
		911	for (;;)
		912	{
		913	LOCK;
		914
932	next = coro_deq (aTHX_ PRIO_MIN);	915	next = coro_deq (aTHX_ PRIO_MIN);
933		916
934	if (!next)	917	if (next)
935	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	918	break;
		919
		920	UNLOCK;
		921
		922	{
		923	dSP;
		924
		925	ENTER;
		926	SAVETMPS;
		927
		928	PUSHMARK (SP);
		929	PUTBACK;
		930	call_sv (GvSV (coro_idle), G_DISCARD);
		931
		932	FREETMPS;
		933	LEAVE;
		934	}
		935	}
		936
		937	prev = SvRV (current);
		938	SvRV (current) = next;
936		939
937	/* free this only after the transfer */	940	/* free this only after the transfer */
		941	free_coro_mortal ();
938	coro_mortal = prev;	942	coro_mortal = prev;
939	SV_CORO (prev, "Coro::schedule");
940		943
941	SvRV (GvSV (coro_current)) = next;	944	ta->prev = SvSTATE (prev);
942		945	ta->next = SvSTATE (next);
943	SV_CORO (next, "Coro::schedule");	946	ta->flags = TRANSFER_SAVE_ALL;
944		947
945	UNLOCK;	948	UNLOCK;
946
947	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
948	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
949	}	949	}
950		950
951	static void	951	static void
952	api_cede (void)	952	prepare_cede (aTHX_ struct transfer_args *ta)
953	{	953	{
954	dTHX;
955
956	LOCK;	954	LOCK;
957	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
958	UNLOCK;	956	UNLOCK;
959		957
		958	prepare_schedule (ta);
		959	}
		960
		961	static void
960	api_schedule ();	962	api_schedule (void)
		963	{
		964	dTHX;
		965	struct transfer_args ta;
		966
		967	prepare_schedule (&ta);
		968	TRANSFER (ta);
		969	}
		970
		971	static void
		972	api_cede (void)
		973	{
		974	dTHX;
		975	struct transfer_args ta;
		976
		977	prepare_cede (&ta);
		978	TRANSFER (ta);
961	}	979	}
962		980
963	MODULE = Coro::State PACKAGE = Coro::State	981	MODULE = Coro::State PACKAGE = Coro::State
964		982
965	PROTOTYPES: ENABLE	983	PROTOTYPES: DISABLE
966		984
967	BOOT:	985	BOOT:
968	{ /* {} necessary for stoopid perl-5.6.x */	986	{
969	#ifdef USE_ITHREADS	987	#ifdef USE_ITHREADS
970	MUTEX_INIT (&coro_mutex);	988	MUTEX_INIT (&coro_mutex);
971	#endif	989	#endif
		990	BOOT_PAGESIZE;
972		991
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);	992	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
976		993
977	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	994	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
978	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	995	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
979	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	996	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
980	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
981		997
982	main_mainstack = PL_mainstack;	998	main_mainstack = PL_mainstack;
983		999
984	coroapi.ver = CORO_API_VERSION;	1000	coroapi.ver = CORO_API_VERSION;
985	coroapi.transfer = api_transfer;	1001	coroapi.transfer = api_transfer;
986	}
987		1002
988	Coro::State	1003	Newz (0, main_stack, 1, coro_stack);
989	_newprocess(args)	1004	main_stack->idle_sp = (void *)-1;
990	SV * args	1005
991	PROTOTYPE: $	1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		1007	}
		1008
		1009	SV *
		1010	new (char *klass, ...)
992	CODE:	1011	CODE:
993	Coro__State coro;	1012	{
		1013	struct coro *coro;
		1014	HV *hv;
		1015	int i;
994		1016
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);	1017	Newz (0, coro, 1, struct coro);
		1018	coro->args = newAV ();
999		1019
1000	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1020	hv = newHV ();
		1021	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1022	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1023
		1024	for (i = 1; i < items; i++)
		1025	av_push (coro->args, newSVsv (ST (i)));
		1026
		1027	coro->stack = main_stack;
1001	/coro->mainstack = 0; //actual work is done inside transfer /	1028	/coro->mainstack = 0; //actual work is done inside transfer /
1002	/coro->stack = 0;/	1029	/coro->stack = 0;/
1003		1030	}
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:	1031	OUTPUT:
1012	RETVAL	1032	RETVAL
1013		1033
1014	void	1034	void
1015	transfer(prev, next, flags)	1035	transfer (...)
1016	SV *prev	1036	ALIAS:
1017	SV *next	1037	Coro::schedule = 1
1018	int flags	1038	Coro::cede = 2
1019	PROTOTYPE: @	1039	_set_stacklevel = 3
1020	CODE:	1040	CODE:
1021	PUTBACK;	1041	{
1022	SV_CORO (next, "Coro::transfer");	1042	struct transfer_args ta;
1023	SV_CORO (prev, "Coro::transfer");	1043
1024	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1044	switch (ix)
1025	SPAGAIN;	1045	{
		1046	case 0:
		1047	if (items != 3)
		1048	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1049
		1050	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1051	break;
		1052
		1053	case 1:
		1054	prepare_schedule (&ta);
		1055	break;
		1056
		1057	case 2:
		1058	prepare_cede (&ta);
		1059	break;
		1060
		1061	case 3:
		1062	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1063	ta.next = 0;
		1064	ta.flags = TRANSFER_SET_STACKLEVEL;
		1065	break;
		1066	}
		1067
		1068	TRANSFER (ta);
		1069	}
1026		1070
1027	void	1071	void
1028	DESTROY(coro)	1072	_clone_state_from (SV dst, SV src)
1029	Coro::State coro	1073	CODE:
1030	CODE:	1074	{
		1075	struct coro *coro_src = SvSTATE (src);
1031		1076
1032	if (coro->mainstack && coro->mainstack != main_mainstack)	1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1033	{
1034	struct coro temp;
1035		1078
1036	PUTBACK;	1079	++coro_src->refcnt;
1037	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1038	LOAD (aTHX_ coro);	1081	}
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		1082
1053	void	1083	void
		1084	_nonlocal_goto (IV nextop)
		1085	CODE:
		1086	/* uuh, somebody will kill me again for this */
		1087	PL_op->op_next = INT2PTR (OP *, nextop);
		1088
		1089	void
1054	_exit(code)	1090	_exit (code)
1055	int code	1091	int code
1056	PROTOTYPE: $	1092	PROTOTYPE: $
1057	CODE:	1093	CODE:
1058	_exit (code);	1094	_exit (code);
1059		1095
1060	MODULE = Coro::State PACKAGE = Coro::Cont	1096	MODULE = Coro::State PACKAGE = Coro::Cont
1061		1097
1062	# this is slightly dirty (should expose a c-level api)
1063
1064	void	1098	void
1065	yield(...)	1099	yield (...)
1066	PROTOTYPE: @	1100	PROTOTYPE: @
1067	CODE:	1101	CODE:
		1102	{
1068	SV *yieldstack;	1103	SV *yieldstack;
1069	SV *sv;	1104	SV *sv;
1070	AV *defav = GvAV (PL_defgv);	1105	AV *defav = GvAV (PL_defgv);
1071	struct coro prev, next;	1106	struct coro prev, next;
1072		1107
…		…
1081	av_fill (defav, items - 1);	1116	av_fill (defav, items - 1);
1082	while (items--)	1117	while (items--)
1083	av_store (defav, items, SvREFCNT_inc (ST(items)));	1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1084		1119
1085	sv = av_pop ((AV *)SvRV (yieldstack));	1120	sv = av_pop ((AV *)SvRV (yieldstack));
1086	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1121	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1087	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1122	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1088	SvREFCNT_dec (sv);	1123	SvREFCNT_dec (sv);
1089		1124
1090	transfer (aTHX_ prev, next, 0);	1125	coro_state_transfer (aTHX_ prev, next, 0);
		1126	}
1091		1127
1092	MODULE = Coro::State PACKAGE = Coro	1128	MODULE = Coro::State PACKAGE = Coro
1093		1129
1094	# this is slightly dirty (should expose a c-level api)
1095
1096	BOOT:	1130	BOOT:
1097	{	1131	{
1098	int i;	1132	int i;
		1133
1099	HV *stash = gv_stashpv ("Coro", TRUE);	1134	coro_stash = gv_stashpv ("Coro", TRUE);
1100		1135
1101	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1136	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1102	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1137	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1103	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1138	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1104	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1139	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1105	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1140	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1106	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1141	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1107		1142
1108	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1143	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1109	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1144	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1110		1145
1111	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1146	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1119	coroapi.ready = api_ready;	1154	coroapi.ready = api_ready;
1120	coroapi.nready = &coro_nready;	1155	coroapi.nready = &coro_nready;
1121	coroapi.current = coro_current;	1156	coroapi.current = coro_current;
1122		1157
1123	GCoroAPI = &coroapi;	1158	GCoroAPI = &coroapi;
1124	sv_setiv(sv, (IV)&coroapi);	1159	sv_setiv (sv, (IV)&coroapi);
1125	SvREADONLY_on(sv);	1160	SvREADONLY_on (sv);
1126	}	1161	}
1127	}	1162	}
1128		1163
1129	#if !PERL_MICRO	1164	int
		1165	prio (Coro::State coro, int newprio = 0)
		1166	ALIAS:
		1167	nice = 1
		1168	CODE:
		1169	{
		1170	RETVAL = coro->prio;
		1171
		1172	if (items > 1)
		1173	{
		1174	if (ix)
		1175	newprio += coro->prio;
		1176
		1177	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1178	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1179
		1180	coro->prio = newprio;
		1181	}
		1182	}
1130		1183
1131	void	1184	void
1132	ready(self)	1185	ready (SV *self)
1133	SV * self
1134	PROTOTYPE: $	1186	PROTOTYPE: $
1135	CODE:	1187	CODE:
1136	api_ready (self);	1188	api_ready (self);
1137		1189
1138	#endif
1139
1140	int	1190	int
1141	nready(...)	1191	nready (...)
1142	PROTOTYPE:	1192	PROTOTYPE:
1143	CODE:	1193	CODE:
1144	RETVAL = coro_nready;	1194	RETVAL = coro_nready;
1145	OUTPUT:	1195	OUTPUT:
1146	RETVAL	1196	RETVAL
1147		1197
1148	void	1198	MODULE = Coro::State PACKAGE = Coro::AIO
1149	schedule(...)
1150	PROTOTYPE:
1151	CODE:
1152	api_schedule ();
1153		1199
1154	void
1155	cede(...)
1156	PROTOTYPE:
1157	CODE:
1158	api_cede ();
1159
1160	# and these are hacks
1161	SV *	1200	SV *
1162	_aio_get_state ()	1201	_get_state ()
1163	CODE:	1202	CODE:
1164	{	1203	{
1165	struct {	1204	struct {
1166	int errorno;	1205	int errorno;
1167	int laststype;	1206	int laststype;
…		…
1178	}	1217	}
1179	OUTPUT:	1218	OUTPUT:
1180	RETVAL	1219	RETVAL
1181		1220
1182	void	1221	void
1183	_aio_set_state (char *data_)	1222	_set_state (char *data_)
1184	PROTOTYPE: $	1223	PROTOTYPE: $
1185	CODE:	1224	CODE:
1186	{	1225	{
1187	struct {	1226	struct {
1188	int errorno;	1227	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.72 by root, Wed Feb 1 23:59:41 2006 UTC vs. Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.72 by root, Wed Feb 1 23:59:41 2006 UTC vs.
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC