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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.74 by root, Mon Oct 23 22:49:09 2006 UTC vs.
Revision 1.93 by root, Sun Nov 26 03:22:50 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	/* the stack */
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	void idle_sp; / original stacklevel when coroutine was created */
		101	JMPENV *top_env;
		102	coro_context cctx;
87	} coro_stack;	103	} coro_stack;
88		104
		105	/* the (fake) coro_stack representing the main program */
		106	static coro_stack *main_stack;
		107
		108	/* this is a structure representing a perl-level coroutine */
89	struct coro {	109	struct coro {
90	/* the top-level JMPENV for each coroutine, needed to catch dies. */	110	/* the c coroutine allocated to this perl coroutine, if any */
91	JMPENV start_env;
92
93	/* the optional C context */
94	coro_stack *stack;	111	coro_stack *stack;
95	void *cursp;	112
		113	/* data associated with this coroutine (initial args) */
		114	AV *args;
96	int gencnt;	115	int refcnt;
97		116
98	/* optionally saved, might be zero */	117	/* optionally saved, might be zero */
99	AV *defav;	118	AV *defav;
100	SV *defsv;	119	SV *defsv;
101	SV *errsv;	120	SV *errsv;
…		…
131	OP **retstack;	150	OP **retstack;
132	I32 retstack_ix;	151	I32 retstack_ix;
133	I32 retstack_max;	152	I32 retstack_max;
134	PMOP *curpm;	153	PMOP *curpm;
135	COP *curcop;	154	COP *curcop;
136	JMPENV *top_env;
137		155
138	/* data associated with this coroutine (initial args) */	156	/* coro process data */
139	AV *args;	157	int prio;
140	};	158	};
141		159
142	typedef struct coro *Coro__State;	160	typedef struct coro *Coro__State;
143	typedef struct coro *Coro__State_or_hashref;	161	typedef struct coro *Coro__State_or_hashref;
144		162
145	/* mostly copied from op.c:cv_clone2 */	163	static AV *
146	STATIC AV *	164	coro_clone_padlist (pTHX_ CV *cv)
147	clone_padlist (pTHX_ AV *protopadlist)
148	{	165	{
149	AV *av;	166	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;	167	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		168
168	newpadlist = newAV ();	169	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	170	AvREAL_off (newpadlist);
170	av_store (newpadlist, 0, (SV *) newpad_name);	171	#if PERL_VERSION < 9
		172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		173	#else
		174	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		175	#endif
		176	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		177	--AvFILLp (padlist);
		178
		179	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
171	av_store (newpadlist, 1, (SV *) newpad);	180	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		181
242	return newpadlist;	182	return newpadlist;
243	}	183	}
244		184
245	STATIC void	185	static void
246	free_padlist (pTHX_ AV *padlist)	186	free_padlist (pTHX_ AV *padlist)
247	{	187	{
248	/* may be during global destruction */	188	/* may be during global destruction */
249	if (SvREFCNT (padlist))	189	if (SvREFCNT (padlist))
250	{	190	{
…		…
264		204
265	SvREFCNT_dec ((SV*)padlist);	205	SvREFCNT_dec ((SV*)padlist);
266	}	206	}
267	}	207	}
268		208
269	STATIC int	209	static int
270	coro_cv_free (pTHX_ SV sv, MAGIC mg)	210	coro_cv_free (pTHX_ SV sv, MAGIC mg)
271	{	211	{
272	AV *padlist;	212	AV *padlist;
273	AV av = (AV )mg->mg_obj;	213	AV av = (AV )mg->mg_obj;
274		214
275	/* casting is fun. */	215	/* casting is fun. */
276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	216	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
277	free_padlist (aTHX_ padlist);	217	free_padlist (aTHX_ padlist);
278		218
279	SvREFCNT_dec (av);	219	SvREFCNT_dec (av);
		220
		221	return 0;
280	}	222	}
281		223
282	#define PERL_MAGIC_coro PERL_MAGIC_ext	224	#define PERL_MAGIC_coro PERL_MAGIC_ext
283		225
284	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	226	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
285		227
286	/* the next two functions merely cache the padlists */	228	/* the next two functions merely cache the padlists */
287	STATIC void	229	static void
288	get_padlist (pTHX_ CV *cv)	230	get_padlist (pTHX_ CV *cv)
289	{	231	{
290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	232	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
291		233
292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	234	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	235	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
294	else	236	else
		237	{
		238	#if 0
		239	/* this should work - but it doesn't :( */
		240	CV *cp = Perl_cv_clone (aTHX_ cv);
		241	CvPADLIST (cv) = CvPADLIST (cp);
		242	CvPADLIST (cp) = 0;
		243	SvREFCNT_dec (cp);
		244	#else
295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	245	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		246	#endif
		247	}
296	}	248	}
297		249
298	STATIC void	250	static void
299	put_padlist (pTHX_ CV *cv)	251	put_padlist (pTHX_ CV *cv)
300	{	252	{
301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
302		254
303	if (!mg)	255	if (!mg)
…		…
353	PL_retstack_ix = c->retstack_ix;	305	PL_retstack_ix = c->retstack_ix;
354	PL_retstack_max = c->retstack_max;	306	PL_retstack_max = c->retstack_max;
355	#endif	307	#endif
356	PL_curpm = c->curpm;	308	PL_curpm = c->curpm;
357	PL_curcop = c->curcop;	309	PL_curcop = c->curcop;
358	PL_top_env = c->top_env;
359		310
360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	311	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	312	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	313	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
363		314
…		…
420	}	371	}
421		372
422	PUSHs ((SV *)CvPADLIST(cv));	373	PUSHs ((SV *)CvPADLIST(cv));
423	PUSHs ((SV *)cv);	374	PUSHs ((SV *)cv);
424		375
425	get_padlist (aTHX_ cv); /* this is a monster */	376	get_padlist (aTHX_ cv);
426	}	377	}
427	}	378	}
428	#ifdef CXt_FORMAT	379	#ifdef CXt_FORMAT
429	else if (CxTYPE(cx) == CXt_FORMAT)	380	else if (CxTYPE(cx) == CXt_FORMAT)
430	{	381	{
…		…
481	c->retstack_ix = PL_retstack_ix;	432	c->retstack_ix = PL_retstack_ix;
482	c->retstack_max = PL_retstack_max;	433	c->retstack_max = PL_retstack_max;
483	#endif	434	#endif
484	c->curpm = PL_curpm;	435	c->curpm = PL_curpm;
485	c->curcop = PL_curcop;	436	c->curcop = PL_curcop;
486	c->top_env = PL_top_env;
487	}	437	}
488		438
489	/*	439	/*
490	* allocate various perl stacks. This is an exact copy	440	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	441	* of perl.c:init_stacks, except that it uses less memory
492	* on the (sometimes correct) assumption that coroutines do	442	* on the (sometimes correct) assumption that coroutines do
493	* not usually need a lot of stackspace.	443	* not usually need a lot of stackspace.
494	*/	444	*/
495	STATIC void	445	static void
496	coro_init_stacks (pTHX)	446	coro_init_stacks (pTHX)
497	{	447	{
498	LOCK;	448	LOCK;
499		449
500	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
537	}	487	}
538		488
539	/*	489	/*
540	* destroy the stacks, the callchain etc...	490	* destroy the stacks, the callchain etc...
541	*/	491	*/
542	STATIC void	492	static void
543	destroy_stacks(pTHX)	493	destroy_stacks(pTHX)
544	{	494	{
545	if (!IN_DESTRUCT)	495	if (!IN_DESTRUCT)
546	{	496	{
547	/* is this ugly, I ask? */	497	/* is this ugly, I ask? */
…		…
585	Safefree (PL_retstack);	535	Safefree (PL_retstack);
586	#endif	536	#endif
587	}	537	}
588		538
589	static void	539	static void
590	allocate_stack (Coro__State ctx, int alloc)	540	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	{	541	{
647	/*	542	/*
648	* emulate part of the perl startup here.	543	* emulate part of the perl startup here.
649	*/	544	*/
650	dTHX;	545	dTHX;
651	dSP;	546	dSP;
652	Coro__State ctx = (Coro__State)arg;	547	UNOP myop;
653	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	548	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
654		549
655	coro_init_stacks (aTHX);	550	coro_init_stacks (aTHX);
656	/PL_curcop = 0;/	551	/PL_curcop = 0;/
657	/PL_in_eval = PL_in_eval;/ /* inherit */	552	/PL_in_eval = PL_in_eval;/ /* inherit */
658	SvREFCNT_dec (GvAV (PL_defgv));	553	SvREFCNT_dec (GvAV (PL_defgv));
659	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	554	GvAV (PL_defgv) = coro->args; coro->args = 0;
660		555
661	SPAGAIN;	556	SPAGAIN;
662		557
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);	558	Zero (&myop, 1, UNOP);
683	myop.op_next = Nullop;	559	myop.op_next = Nullop;
684	myop.op_flags = OPf_WANT_VOID;	560	myop.op_flags = OPf_WANT_VOID;
685		561
		562	PL_op = (OP *)&myop;
		563
686	PUSHMARK(SP);	564	PUSHMARK(SP);
687	XPUSHs (sub_init);	565	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;	566	PUTBACK;
696	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
697	SPAGAIN;	568	SPAGAIN;
698		569
699	ENTER; /* necessary e.g. for dounwind */	570	ENTER; /* necessary e.g. for dounwind */
700	}
701	}	571	}
702		572
703	static void	573	static void
704	continue_coro (void *arg)	574	free_coro_mortal ()
705	{	575	{
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)	576	if (coro_mortal)
816	{	577	{
817	SvREFCNT_dec (coro_mortal);	578	SvREFCNT_dec (coro_mortal);
818	coro_mortal = 0;	579	coro_mortal = 0;
819	}	580	}
		581	}
		582
		583	static void
		584	coro_run (void *arg)
		585	{
		586	/*
		587	* this is a _very_ stripped down perl interpreter ;)
		588	*/
		589	dTHX;
		590
820	UNLOCK;	591	UNLOCK;
821	}
822		592
823	#define SV_CORO(sv,func) \	593	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		594
844	#define SvSTATE(sv) (struct coro *)SvIV (sv)	595	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
		596	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
845		597
		598	/* continue at cctx_init, without entersub */
		599	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
		600
		601	/* somebody will hit me for both perl_run and PL_restart_op */
		602	perl_run (aTHX_ PERL_GET_CONTEXT);
		603
		604	abort ();
		605	}
		606
		607	static coro_stack *
		608	stack_new ()
		609	{
		610	coro_stack *stack;
		611
		612	New (0, stack, 1, coro_stack);
		613
		614	#if HAVE_MMAP
		615
		616	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
		617	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		618
		619	if (stack->sptr == (void *)-1)
		620	{
		621	perror ("FATAL: unable to mmap stack for coroutine");
		622	_exit (EXIT_FAILURE);
		623	}
		624
		625	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		626
		627	#else
		628
		629	stack->ssize = STACKSIZE * (long)sizeof (long);
		630	New (0, stack->sptr, STACKSIZE, long);
		631
		632	if (!stack->sptr)
		633	{
		634	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		635	_exit (EXIT_FAILURE);
		636	}
		637
		638	#endif
		639
		640	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		641
		642	return stack;
		643	}
		644
		645	static void
		646	stack_free (coro_stack *stack)
		647	{
		648	if (!stack \|\| stack == main_stack)
		649	return;
		650
		651	#if HAVE_MMAP
		652	munmap (stack->sptr, stack->ssize);
		653	#else
		654	Safefree (stack->sptr);
		655	#endif
		656
		657	Safefree (stack);
		658	}
		659
		660	static coro_stack *stack_first;
		661
		662	static coro_stack *
		663	stack_get ()
		664	{
		665	coro_stack *stack;
		666
		667	if (stack_first)
		668	{
		669	stack = stack_first;
		670	stack_first = stack->next;
		671	}
		672	else
		673	{
		674	stack = stack_new ();
		675	PL_op = PL_op->op_next;
		676	}
		677
		678	return stack;
		679	}
		680
		681	static void
		682	stack_put (coro_stack *stack)
		683	{
		684	stack->next = stack_first;
		685	stack_first = stack;
		686	}
		687
		688	/* never call directly, always through the coro_state_transfer global variable */
		689	static void
		690	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
		691	{
		692	dSTACKLEVEL;
		693
		694	/* sometimes transfer is only called to set idle_sp */
		695	if (flags == TRANSFER_SET_STACKLEVEL)
		696	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		697	else if (prev != next)
		698	{
		699	coro_stack *prev__stack;
		700
		701	LOCK;
		702
		703	if (next->mainstack)
		704	{
		705	/* coroutine already started */
		706	SAVE (prev, flags);
		707	LOAD (next);
		708	}
		709	else
		710	{
		711	/* need to start coroutine */
		712	/* first get rid of the old state */
		713	SAVE (prev, -1);
		714	/* setup coroutine call */
		715	setup_coro (next);
		716	/* need a stack */
		717	next->stack = 0;
		718	}
		719
		720	prev__stack = prev->stack;
		721
		722	/* possibly "free" the stack */
		723	if (prev__stack->idle_sp == STACKLEVEL)
		724	{
		725	stack_put (prev__stack);
		726	prev->stack = 0;
		727	}
		728
		729	if (!next->stack)
		730	next->stack = stack_get ();
		731
		732	if (prev__stack != next->stack)
		733	{
		734	prev__stack->top_env = PL_top_env;
		735	PL_top_env = next->stack->top_env;
		736	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		737	}
		738
		739	free_coro_mortal ();
		740
		741	UNLOCK;
		742	}
		743	}
		744
		745	/* use this function pointer to call the above function */
		746	/* this is done to increase chances of the compiler not inlining the call */
		747	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
		748	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		749
		750	struct transfer_args
		751	{
		752	struct coro prev, next;
		753	int flags;
		754	};
		755
		756	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)
		757
		758	static void
		759	coro_state_destroy (struct coro *coro)
		760	{
		761	if (coro->refcnt--)
		762	return;
		763
		764	if (coro->mainstack && coro->mainstack != main_mainstack)
		765	{
		766	struct coro temp;
		767
		768	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		769	LOAD (aTHX_ coro);
		770
		771	destroy_stacks (aTHX);
		772
		773	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		774
		775	coro->mainstack = 0;
		776	}
		777
		778	stack_free (coro->stack);
		779	SvREFCNT_dec (coro->args);
		780	Safefree (coro);
		781	}
		782
846	static void	783	static int
		784	coro_state_clear (SV sv, MAGIC mg)
		785	{
		786	struct coro coro = (struct coro )mg->mg_ptr;
		787	mg->mg_ptr = 0;
		788
		789	coro_state_destroy (coro);
		790
		791	return 0;
		792	}
		793
		794	static int
		795	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		796	{
		797	struct coro coro = (struct coro )mg->mg_ptr;
		798
		799	++coro->refcnt;
		800
		801	return 0;
		802	}
		803
		804	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		805
		806	static struct coro *
		807	SvSTATE (SV *coro)
		808	{
		809	HV *stash;
		810	MAGIC *mg;
		811
		812	if (SvROK (coro))
		813	coro = SvRV (coro);
		814
		815	stash = SvSTASH (coro);
		816	if (stash != coro_stash && stash != coro_state_stash)
		817	{
		818	/* very slow, but rare, check */
		819	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		820	croak ("Coro::State object required");
		821	}
		822
		823	mg = SvMAGIC (coro);
		824	assert (mg->mg_type == PERL_MAGIC_ext);
		825	return (struct coro *)mg->mg_ptr;
		826	}
		827
		828	static void
		829	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)
		830	{
		831	ta->prev = SvSTATE (prev);
		832	ta->next = SvSTATE (next);
		833	ta->flags = flags;
		834	}
		835
		836	static void
847	api_transfer(pTHX_ SV prev, SV next, int flags)	837	api_transfer (SV prev, SV next, int flags)
848	{	838	{
849	SV_CORO (prev, "Coro::transfer");	839	dTHX;
850	SV_CORO (next, "Coro::transfer");	840	struct transfer_args ta;
851		841
852	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	842	prepare_transfer (aTHX_ &ta, prev, next, flags);
		843	TRANSFER (ta);
853	}	844	}
854		845
855	/ Coro ******************************************************************/	846	/ Coro ******************************************************************/
856		847
857	#define PRIO_MAX 3	848	#define PRIO_MAX 3
…		…
861	#define PRIO_IDLE -3	852	#define PRIO_IDLE -3
862	#define PRIO_MIN -4	853	#define PRIO_MIN -4
863		854
864	/* for Coro.pm */	855	/* for Coro.pm */
865	static GV coro_current, coro_idle;	856	static GV coro_current, coro_idle;
866	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	857	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
867	static int coro_nready;	858	static int coro_nready;
868		859
869	static void	860	static void
870	coro_enq (pTHX_ SV *sv)	861	coro_enq (pTHX_ SV *sv)
871	{	862	{
872	SV **xprio;
873	int prio;	863	int prio;
874		864
875	if (SvTYPE (sv) != SVt_PVHV)	865	if (SvTYPE (sv) != SVt_PVHV)
876	croak ("Coro::ready tried to enqueue something that is not a coroutine");	866	croak ("Coro::ready tried to enqueue something that is not a coroutine");
877		867
878	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	868	prio = SvSTATE (sv)->prio;
879	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
880
881	prio = prio > PRIO_MAX ? PRIO_MAX
882	: prio < PRIO_MIN ? PRIO_MIN
883	: prio;
884		869
885	av_push (coro_ready [prio - PRIO_MIN], sv);	870	av_push (coro_ready [prio - PRIO_MIN], sv);
886	coro_nready++;	871	coro_nready++;
887	}	872	}
888		873
…		…
894	min_prio -= PRIO_MIN;	879	min_prio -= PRIO_MIN;
895	if (min_prio < 0)	880	if (min_prio < 0)
896	min_prio = 0;	881	min_prio = 0;
897		882
898	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	883	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
899	if (av_len (coro_ready[prio]) >= 0)	884	if (AvFILLp (coro_ready [prio]) >= 0)
900	{	885	{
901	coro_nready--;	886	coro_nready--;
902	return av_shift (coro_ready[prio]);	887	return av_shift (coro_ready [prio]);
903	}	888	}
904		889
905	return 0;	890	return 0;
906	}	891	}
907		892
…		…
917	coro_enq (aTHX_ SvREFCNT_inc (coro));	902	coro_enq (aTHX_ SvREFCNT_inc (coro));
918	UNLOCK;	903	UNLOCK;
919	}	904	}
920		905
921	static void	906	static void
922	api_schedule (void)	907	prepare_schedule (aTHX_ struct transfer_args *ta)
923	{	908	{
924	dTHX;
925
926	SV prev, next;	909	SV current, prev, *next;
927		910
928	LOCK;	911	LOCK;
929		912
930	prev = SvRV (GvSV (coro_current));	913	current = GvSV (coro_current);
		914
		915	for (;;)
		916	{
		917	LOCK;
		918
931	next = coro_deq (aTHX_ PRIO_MIN);	919	next = coro_deq (aTHX_ PRIO_MIN);
932		920
933	if (!next)	921	if (next)
934	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	922	break;
		923
		924	UNLOCK;
		925
		926	{
		927	dSP;
		928
		929	ENTER;
		930	SAVETMPS;
		931
		932	PUSHMARK (SP);
		933	PUTBACK;
		934	call_sv (GvSV (coro_idle), G_DISCARD);
		935
		936	FREETMPS;
		937	LEAVE;
		938	}
		939	}
		940
		941	prev = SvRV (current);
		942	SvRV (current) = next;
935		943
936	/* free this only after the transfer */	944	/* free this only after the transfer */
		945	free_coro_mortal ();
937	coro_mortal = prev;	946	coro_mortal = prev;
938	SV_CORO (prev, "Coro::schedule");
939		947
940	SvRV (GvSV (coro_current)) = next;	948	ta->prev = SvSTATE (prev);
941		949	ta->next = SvSTATE (next);
942	SV_CORO (next, "Coro::schedule");	950	ta->flags = TRANSFER_SAVE_ALL;
943		951
944	UNLOCK;	952	UNLOCK;
945
946	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
947	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
948	}	953	}
949		954
950	static void	955	static void
951	api_cede (void)	956	prepare_cede (aTHX_ struct transfer_args *ta)
952	{	957	{
953	dTHX;
954
955	LOCK;	958	LOCK;
956	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	959	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
957	UNLOCK;	960	UNLOCK;
958		961
		962	prepare_schedule (ta);
		963	}
		964
		965	static void
959	api_schedule ();	966	api_schedule (void)
		967	{
		968	dTHX;
		969	struct transfer_args ta;
		970
		971	prepare_schedule (&ta);
		972	TRANSFER (ta);
		973	}
		974
		975	static void
		976	api_cede (void)
		977	{
		978	dTHX;
		979	struct transfer_args ta;
		980
		981	prepare_cede (&ta);
		982	TRANSFER (ta);
960	}	983	}
961		984
962	MODULE = Coro::State PACKAGE = Coro::State	985	MODULE = Coro::State PACKAGE = Coro::State
963		986
964	PROTOTYPES: ENABLE	987	PROTOTYPES: DISABLE
965		988
966	BOOT:	989	BOOT:
967	{ /* {} necessary for stoopid perl-5.6.x */	990	{
968	#ifdef USE_ITHREADS	991	#ifdef USE_ITHREADS
969	MUTEX_INIT (&coro_mutex);	992	MUTEX_INIT (&coro_mutex);
970	#endif	993	#endif
		994	BOOT_PAGESIZE;
971		995
972	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
973	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
974	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	996	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
975		997
976	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	998	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
977	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	999	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
978	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1000	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
979	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
980		1001
981	main_mainstack = PL_mainstack;	1002	main_mainstack = PL_mainstack;
982		1003
983	coroapi.ver = CORO_API_VERSION;	1004	coroapi.ver = CORO_API_VERSION;
984	coroapi.transfer = api_transfer;	1005	coroapi.transfer = api_transfer;
985	}
986		1006
987	Coro::State	1007	Newz (0, main_stack, 1, coro_stack);
988	_newprocess(args)	1008	main_stack->idle_sp = (void *)-1;
989	SV * args	1009
990	PROTOTYPE: $	1010	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		1011	}
		1012
		1013	SV *
		1014	new (char *klass, ...)
991	CODE:	1015	CODE:
992	Coro__State coro;	1016	{
		1017	struct coro *coro;
		1018	HV *hv;
		1019	int i;
993		1020
994	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
995	croak ("Coro::State::_newprocess expects an arrayref");
996
997	Newz (0, coro, 1, struct coro);	1021	Newz (0, coro, 1, struct coro);
		1022	coro->args = newAV ();
998		1023
999	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1024	hv = newHV ();
		1025	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1027
		1028	for (i = 1; i < items; i++)
		1029	av_push (coro->args, newSVsv (ST (i)));
		1030
		1031	coro->stack = main_stack;
1000	/coro->mainstack = 0; //actual work is done inside transfer /	1032	/coro->mainstack = 0; //actual work is done inside transfer /
1001	/coro->stack = 0;/	1033	/coro->stack = 0;/
1002		1034	}
1003	/* same as JMPENV_BOOTSTRAP */
1004	/* we might be able to recycle start_env, but safe is safe */
1005	/Zero(&coro->start_env, 1, JMPENV);/
1006	coro->start_env.je_ret = -1;
1007	coro->start_env.je_mustcatch = TRUE;
1008
1009	RETVAL = coro;
1010	OUTPUT:	1035	OUTPUT:
1011	RETVAL	1036	RETVAL
1012		1037
1013	void	1038	void
1014	transfer(prev, next, flags)	1039	transfer (...)
1015	SV *prev	1040	ALIAS:
1016	SV *next	1041	Coro::schedule = 1
1017	int flags	1042	Coro::cede = 2
1018	PROTOTYPE: @	1043	_set_stacklevel = 3
1019	CODE:	1044	CODE:
1020	PUTBACK;	1045	{
1021	SV_CORO (next, "Coro::transfer");	1046	struct transfer_args ta;
1022	SV_CORO (prev, "Coro::transfer");	1047
1023	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1048	switch (ix)
1024	SPAGAIN;	1049	{
		1050	case 0:
		1051	if (items != 3)
		1052	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1053
		1054	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1055	break;
		1056
		1057	case 1:
		1058	prepare_schedule (&ta);
		1059	break;
		1060
		1061	case 2:
		1062	prepare_cede (&ta);
		1063	break;
		1064
		1065	case 3:
		1066	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1067	ta.next = 0;
		1068	ta.flags = TRANSFER_SET_STACKLEVEL;
		1069	break;
		1070	}
		1071
		1072	TRANSFER (ta);
		1073	}
1025		1074
1026	void	1075	void
1027	DESTROY(coro)	1076	_clone_state_from (SV dst, SV src)
1028	Coro::State coro	1077	CODE:
1029	CODE:	1078	{
		1079	struct coro *coro_src = SvSTATE (src);
1030		1080
1031	if (coro->mainstack && coro->mainstack != main_mainstack)	1081	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1032	{
1033	struct coro temp;
1034		1082
1035	PUTBACK;	1083	++coro_src->refcnt;
1036	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1084	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1037	LOAD (aTHX_ coro);	1085	}
1038	SPAGAIN;
1039
1040	destroy_stacks (aTHX);
1041
1042	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1043	SPAGAIN;
1044
1045	coro->mainstack = 0;
1046	}
1047
1048	deallocate_stack (coro);
1049	SvREFCNT_dec (coro->args);
1050	Safefree (coro);
1051		1086
1052	void	1087	void
		1088	_nonlocal_goto (IV nextop)
		1089	CODE:
		1090	/* uuh, somebody will kill me again for this */
		1091	PL_op->op_next = INT2PTR (OP *, nextop);
		1092
		1093	void
1053	_exit(code)	1094	_exit (code)
1054	int code	1095	int code
1055	PROTOTYPE: $	1096	PROTOTYPE: $
1056	CODE:	1097	CODE:
1057	_exit (code);	1098	_exit (code);
1058		1099
1059	MODULE = Coro::State PACKAGE = Coro::Cont	1100	MODULE = Coro::State PACKAGE = Coro::Cont
1060		1101
1061	# this is slightly dirty (should expose a c-level api)
1062
1063	void	1102	void
1064	yield(...)	1103	yield (...)
1065	PROTOTYPE: @	1104	PROTOTYPE: @
1066	CODE:	1105	CODE:
		1106	{
1067	SV *yieldstack;	1107	SV *yieldstack;
1068	SV *sv;	1108	SV *sv;
1069	AV *defav = GvAV (PL_defgv);	1109	AV *defav = GvAV (PL_defgv);
1070	struct coro prev, next;	1110	struct coro prev, next;
1071		1111
…		…
1080	av_fill (defav, items - 1);	1120	av_fill (defav, items - 1);
1081	while (items--)	1121	while (items--)
1082	av_store (defav, items, SvREFCNT_inc (ST(items)));	1122	av_store (defav, items, SvREFCNT_inc (ST(items)));
1083		1123
1084	sv = av_pop ((AV *)SvRV (yieldstack));	1124	sv = av_pop ((AV *)SvRV (yieldstack));
1085	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1125	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1086	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1126	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1087	SvREFCNT_dec (sv);	1127	SvREFCNT_dec (sv);
1088		1128
1089	transfer (aTHX_ prev, next, 0);	1129	coro_state_transfer (aTHX_ prev, next, 0);
		1130	}
1090		1131
1091	MODULE = Coro::State PACKAGE = Coro	1132	MODULE = Coro::State PACKAGE = Coro
1092		1133
1093	# this is slightly dirty (should expose a c-level api)
1094
1095	BOOT:	1134	BOOT:
1096	{	1135	{
1097	int i;	1136	int i;
		1137
1098	HV *stash = gv_stashpv ("Coro", TRUE);	1138	coro_stash = gv_stashpv ("Coro", TRUE);
1099		1139
1100	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1140	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1101	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1141	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1102	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1142	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1103	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1143	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1104	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1144	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1105	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1145	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1106		1146
1107	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1147	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1108	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1148	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1109		1149
1110	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1150	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1118	coroapi.ready = api_ready;	1158	coroapi.ready = api_ready;
1119	coroapi.nready = &coro_nready;	1159	coroapi.nready = &coro_nready;
1120	coroapi.current = coro_current;	1160	coroapi.current = coro_current;
1121		1161
1122	GCoroAPI = &coroapi;	1162	GCoroAPI = &coroapi;
1123	sv_setiv(sv, (IV)&coroapi);	1163	sv_setiv (sv, (IV)&coroapi);
1124	SvREADONLY_on(sv);	1164	SvREADONLY_on (sv);
1125	}	1165	}
1126	}	1166	}
1127		1167
1128	#if !PERL_MICRO	1168	int
		1169	prio (Coro::State coro, int newprio = 0)
		1170	ALIAS:
		1171	nice = 1
		1172	CODE:
		1173	{
		1174	RETVAL = coro->prio;
		1175
		1176	if (items > 1)
		1177	{
		1178	if (ix)
		1179	newprio += coro->prio;
		1180
		1181	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1182	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1183
		1184	coro->prio = newprio;
		1185	}
		1186	}
1129		1187
1130	void	1188	void
1131	ready(self)	1189	ready (SV *self)
1132	SV * self
1133	PROTOTYPE: $	1190	PROTOTYPE: $
1134	CODE:	1191	CODE:
1135	api_ready (self);	1192	api_ready (self);
1136		1193
1137	#endif
1138
1139	int	1194	int
1140	nready(...)	1195	nready (...)
1141	PROTOTYPE:	1196	PROTOTYPE:
1142	CODE:	1197	CODE:
1143	RETVAL = coro_nready;	1198	RETVAL = coro_nready;
1144	OUTPUT:	1199	OUTPUT:
1145	RETVAL	1200	RETVAL
1146		1201
1147	void	1202	MODULE = Coro::State PACKAGE = Coro::AIO
1148	schedule(...)
1149	PROTOTYPE:
1150	CODE:
1151	api_schedule ();
1152		1203
1153	void
1154	cede(...)
1155	PROTOTYPE:
1156	CODE:
1157	api_cede ();
1158
1159	# and these are hacks
1160	SV *	1204	SV *
1161	_aio_get_state ()	1205	_get_state ()
1162	CODE:	1206	CODE:
1163	{	1207	{
1164	struct {	1208	struct {
1165	int errorno;	1209	int errorno;
1166	int laststype;	1210	int laststype;
…		…
1177	}	1221	}
1178	OUTPUT:	1222	OUTPUT:
1179	RETVAL	1223	RETVAL
1180		1224
1181	void	1225	void
1182	_aio_set_state (char *data_)	1226	_set_state (char *data_)
1183	PROTOTYPE: $	1227	PROTOTYPE: $
1184	CODE:	1228	CODE:
1185	{	1229	{
1186	struct {	1230	struct {
1187	int errorno;	1231	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.74 by root, Mon Oct 23 22:49:09 2006 UTC vs. Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.74 by root, Mon Oct 23 22:49:09 2006 UTC vs.
Revision 1.93 by root, Sun Nov 26 03:22:50 2006 UTC