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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.62 by root, Tue Feb 22 19:51:58 2005 UTC vs.
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT	1	#define PERL_NO_GET_CONTEXT
		2
		3	#include "libcoro/coro.c"
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if PATCHLEVEL < 6	11	#if PERL_VERSION < 6
10	# ifndef PL_ppaddr	12	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	13	# define PL_ppaddr ppaddr
12	# endif	14	# endif
13	# ifndef call_sv	15	# ifndef call_sv
14	# define call_sv perl_call_sv	16	# define call_sv perl_call_sv
25	# ifndef IS_PADCONST	27	# ifndef IS_PADCONST
26	# define IS_PADCONST(v) 0	28	# define IS_PADCONST(v) 0
27	# endif	29	# endif
28	#endif	30	#endif
29		31
30	#include "libcoro/coro.c"
31
32	#include <signal.h>	32	#include <stdio.h>
		33	#include <errno.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
33		42
34	#ifdef HAVE_MMAP	43	#ifdef HAVE_MMAP
35	# include <unistd.h>	44	# include <unistd.h>
36	# include <sys/mman.h>	45	# include <sys/mman.h>
37	# ifndef MAP_ANONYMOUS	46	# ifndef MAP_ANONYMOUS
…		…
39	# define MAP_ANONYMOUS MAP_ANON	48	# define MAP_ANONYMOUS MAP_ANON
40	# else	49	# else
41	# undef HAVE_MMAP	50	# undef HAVE_MMAP
42	# endif	51	# endif
43	# 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
44	#endif	60	# endif
45		61	#endif
46	#define SUB_INIT "Coro::State::initialize"
47	#define UCORO_STATE "_coro_state"
48		62
49	/* 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
50	* 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
51	* and should be unique. */	65	* and should be unique. */
		66	#define dSTACKLEVEL int stacklevel
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define STACKLEVEL ((void *)&stacklevel)
53		68
54	#define IN_DESTRUCT (PL_main_cv == Nullcv)	69	#define IN_DESTRUCT (PL_main_cv == Nullcv)
55		70
56	#define labs(l) ((l) >= 0 ? (l) : -(l))	71	#define labs(l) ((l) >= 0 ? (l) : -(l))
57		72
58	#include "CoroAPI.h"	73	#include "CoroAPI.h"
		74
		75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
59		76
60	#ifdef USE_ITHREADS	77	#ifdef USE_ITHREADS
61	static perl_mutex coro_mutex;	78	static perl_mutex coro_mutex;
62	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	79	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
63	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	80	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
64	#else	81	#else
65	# define LOCK 0	82	# define LOCK (void)0
66	# define UNLOCK 0	83	# define UNLOCK (void)0
67	#endif	84	#endif
68		85
69	static struct CoroAPI coroapi;	86	static struct CoroAPI coroapi;
70	static AV main_mainstack; / used to differentiate between $main and others */	87	static AV main_mainstack; / used to differentiate between $main and others */
71	static HV *coro_state_stash;	88	static HV coro_state_stash, coro_stash;
72	static SV *ucoro_state_sv;
73	static U32 ucoro_state_hash;
74	static SV coro_mortal; / will be freed after next transfer */	89	static SV coro_mortal; / will be freed after next transfer */
75		90
76	/* this is actually not only the c stack but also c registers etc... */	91	/* this is a structure representing a c-level coroutine */
77	typedef struct {	92	typedef struct coro_stack {
78	int refcnt; /* pointer reference counter */	93	struct coro_stack *next;
79	int usecnt; /* shared by how many coroutines */
80	int gencnt; /* generation counter */
81		94
82	coro_context cctx;	95	void idle_sp; / original stacklevel when coroutine was created */
83
84	void *sptr;	96	void *sptr;
85	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;
86	} coro_stack;	102	} coro_stack;
87		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 */
88	struct coro {	108	struct coro {
89	/* the top-level JMPENV for each coroutine, needed to catch dies. */	109	/* the c coroutine allocated to this perl coroutine, if any */
90	JMPENV start_env;
91
92	/* the optional C context */
93	coro_stack *stack;	110	coro_stack *stack;
94	void *cursp;	111
		112	/* data associated with this coroutine (initial args) */
		113	AV *args;
95	int gencnt;	114	int refcnt;
96		115
97	/* optionally saved, might be zero */	116	/* optionally saved, might be zero */
98	AV *defav;	117	AV *defav;
99	SV *defsv;	118	SV *defsv;
100	SV *errsv;	119	SV *errsv;
…		…
128	I32 savestack_ix;	147	I32 savestack_ix;
129	I32 savestack_max;	148	I32 savestack_max;
130	OP **retstack;	149	OP **retstack;
131	I32 retstack_ix;	150	I32 retstack_ix;
132	I32 retstack_max;	151	I32 retstack_max;
		152	PMOP *curpm;
133	COP *curcop;	153	COP *curcop;
134	JMPENV *top_env;
135		154
136	/* data associated with this coroutine (initial args) */	155	/* coro process data */
137	AV *args;	156	int prio;
138	};	157	};
139		158
140	typedef struct coro *Coro__State;	159	typedef struct coro *Coro__State;
141	typedef struct coro *Coro__State_or_hashref;	160	typedef struct coro *Coro__State_or_hashref;
142		161
143	/* mostly copied from op.c:cv_clone2 */	162	static AV *
144	STATIC AV *	163	coro_clone_padlist (pTHX_ CV *cv)
145	clone_padlist (pTHX_ AV *protopadlist)
146	{	164	{
147	AV *av;	165	AV *padlist = CvPADLIST (cv);
148	I32 ix;
149	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
150	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
151	SV **pname = AvARRAY (protopad_name);
152	SV **ppad = AvARRAY (protopad);
153	I32 fname = AvFILLp (protopad_name);
154	I32 fpad = AvFILLp (protopad);
155	AV newpadlist, newpad_name, *newpad;	166	AV newpadlist, newpad;
156	SV **npad;
157
158	newpad_name = newAV ();
159	for (ix = fname; ix >= 0; ix--)
160	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
161
162	newpad = newAV ();
163	av_fill (newpad, AvFILLp (protopad));
164	npad = AvARRAY (newpad);
165		167
166	newpadlist = newAV ();	168	newpadlist = newAV ();
167	AvREAL_off (newpadlist);	169	AvREAL_off (newpadlist);
168	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)));
169	av_store (newpadlist, 1, (SV *) newpad);	179	av_store (newpadlist, 1, (SV *)newpad);
170
171	av = newAV (); /* will be @_ */
172	av_extend (av, 0);
173	av_store (newpad, 0, (SV *) av);
174	AvFLAGS (av) = AVf_REIFY;
175
176	for (ix = fpad; ix > 0; ix--)
177	{
178	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
179
180	if (namesv && namesv != &PL_sv_undef)
181	{
182	char name = SvPVX (namesv); / XXX */
183
184	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
185	{ /* lexical from outside? */
186	npad[ix] = SvREFCNT_inc (ppad[ix]);
187	}
188	else
189	{ /* our own lexical */
190	SV *sv;
191	if (*name == '&')
192	sv = SvREFCNT_inc (ppad[ix]);
193	else if (*name == '@')
194	sv = (SV *) newAV ();
195	else if (*name == '%')
196	sv = (SV *) newHV ();
197	else
198	sv = NEWSV (0, 0);
199
200	#ifdef SvPADBUSY
201	if (!SvPADBUSY (sv))
202	#endif
203	SvPADMY_on (sv);
204
205	npad[ix] = sv;
206	}
207	}
208	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
209	{
210	npad[ix] = SvREFCNT_inc (ppad[ix]);
211	}
212	else
213	{
214	SV *sv = NEWSV (0, 0);
215	SvPADTMP_on (sv);
216	npad[ix] = sv;
217	}
218	}
219
220	#if 0 /* return -ENOTUNDERSTOOD */
221	/* Now that vars are all in place, clone nested closures. */
222
223	for (ix = fpad; ix > 0; ix--) {
224	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
225	if (namesv
226	&& namesv != &PL_sv_undef
227	&& !(SvFLAGS(namesv) & SVf_FAKE)
228	&& *SvPVX(namesv) == '&'
229	&& CvCLONE(ppad[ix]))
230	{
231	CV kid = cv_clone((CV)ppad[ix]);
232	SvREFCNT_dec(ppad[ix]);
233	CvCLONE_on(kid);
234	SvPADMY_on(kid);
235	npad[ix] = (SV*)kid;
236	}
237	}
238	#endif
239		180
240	return newpadlist;	181	return newpadlist;
241	}	182	}
242		183
243	STATIC void	184	static void
244	free_padlist (pTHX_ AV *padlist)	185	free_padlist (pTHX_ AV *padlist)
245	{	186	{
246	/* may be during global destruction */	187	/* may be during global destruction */
247	if (SvREFCNT (padlist))	188	if (SvREFCNT (padlist))
248	{	189	{
…		…
262		203
263	SvREFCNT_dec ((SV*)padlist);	204	SvREFCNT_dec ((SV*)padlist);
264	}	205	}
265	}	206	}
266		207
267	STATIC int	208	static int
268	coro_cv_free (pTHX_ SV sv, MAGIC mg)	209	coro_cv_free (pTHX_ SV sv, MAGIC mg)
269	{	210	{
270	AV *padlist;	211	AV *padlist;
271	AV av = (AV )mg->mg_obj;	212	AV av = (AV )mg->mg_obj;
272		213
273	/* casting is fun. */	214	/* casting is fun. */
274	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
275	free_padlist (aTHX_ padlist);	216	free_padlist (aTHX_ padlist);
276		217
277	SvREFCNT_dec (av);	218	SvREFCNT_dec (av);
		219
		220	return 0;
278	}	221	}
279		222
280	#define PERL_MAGIC_coro PERL_MAGIC_ext	223	#define PERL_MAGIC_coro PERL_MAGIC_ext
281		224
282	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
283		226
284	/* the next two functions merely cache the padlists */	227	/* the next two functions merely cache the padlists */
285	STATIC void	228	static void
286	get_padlist (pTHX_ CV *cv)	229	get_padlist (pTHX_ CV *cv)
287	{	230	{
288	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	231	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
289		232
290	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	233	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
291	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	234	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
292	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
293	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	244	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		245	#endif
		246	}
294	}	247	}
295		248
296	STATIC void	249	static void
297	put_padlist (pTHX_ CV *cv)	250	put_padlist (pTHX_ CV *cv)
298	{	251	{
299	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	252	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
300		253
301	if (!mg)	254	if (!mg)
…		…
344	PL_scopestack_ix = c->scopestack_ix;	297	PL_scopestack_ix = c->scopestack_ix;
345	PL_scopestack_max = c->scopestack_max;	298	PL_scopestack_max = c->scopestack_max;
346	PL_savestack = c->savestack;	299	PL_savestack = c->savestack;
347	PL_savestack_ix = c->savestack_ix;	300	PL_savestack_ix = c->savestack_ix;
348	PL_savestack_max = c->savestack_max;	301	PL_savestack_max = c->savestack_max;
		302	#if PERL_VERSION < 9
349	PL_retstack = c->retstack;	303	PL_retstack = c->retstack;
350	PL_retstack_ix = c->retstack_ix;	304	PL_retstack_ix = c->retstack_ix;
351	PL_retstack_max = c->retstack_max;	305	PL_retstack_max = c->retstack_max;
		306	#endif
		307	PL_curpm = c->curpm;
352	PL_curcop = c->curcop;	308	PL_curcop = c->curcop;
353	PL_top_env = c->top_env;
354		309
355	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
356	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
357	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
358		313
…		…
415	}	370	}
416		371
417	PUSHs ((SV *)CvPADLIST(cv));	372	PUSHs ((SV *)CvPADLIST(cv));
418	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
419		374
420	get_padlist (aTHX_ cv); /* this is a monster */	375	get_padlist (aTHX_ cv);
421	}	376	}
422	}	377	}
423	#ifdef CXt_FORMAT	378	#ifdef CXt_FORMAT
424	else if (CxTYPE(cx) == CXt_FORMAT)	379	else if (CxTYPE(cx) == CXt_FORMAT)
425	{	380	{
…		…
469	c->scopestack_ix = PL_scopestack_ix;	424	c->scopestack_ix = PL_scopestack_ix;
470	c->scopestack_max = PL_scopestack_max;	425	c->scopestack_max = PL_scopestack_max;
471	c->savestack = PL_savestack;	426	c->savestack = PL_savestack;
472	c->savestack_ix = PL_savestack_ix;	427	c->savestack_ix = PL_savestack_ix;
473	c->savestack_max = PL_savestack_max;	428	c->savestack_max = PL_savestack_max;
		429	#if PERL_VERSION < 9
474	c->retstack = PL_retstack;	430	c->retstack = PL_retstack;
475	c->retstack_ix = PL_retstack_ix;	431	c->retstack_ix = PL_retstack_ix;
476	c->retstack_max = PL_retstack_max;	432	c->retstack_max = PL_retstack_max;
		433	#endif
		434	c->curpm = PL_curpm;
477	c->curcop = PL_curcop;	435	c->curcop = PL_curcop;
478	c->top_env = PL_top_env;
479	}	436	}
480		437
481	/*	438	/*
482	* allocate various perl stacks. This is an exact copy	439	* allocate various perl stacks. This is an exact copy
483	* of perl.c:init_stacks, except that it uses less memory	440	* of perl.c:init_stacks, except that it uses less memory
484	* on the (sometimes correct) assumption that coroutines do	441	* on the (sometimes correct) assumption that coroutines do
485	* not usually need a lot of stackspace.	442	* not usually need a lot of stackspace.
486	*/	443	*/
487	STATIC void	444	static void
488	coro_init_stacks (pTHX)	445	coro_init_stacks (pTHX)
489	{	446	{
490	LOCK;	447	LOCK;
491		448
492	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
517		474
518	New(54,PL_savestack,96,ANY);	475	New(54,PL_savestack,96,ANY);
519	PL_savestack_ix = 0;	476	PL_savestack_ix = 0;
520	PL_savestack_max = 96;	477	PL_savestack_max = 96;
521		478
		479	#if PERL_VERSION < 9
522	New(54,PL_retstack,8,OP*);	480	New(54,PL_retstack,8,OP*);
523	PL_retstack_ix = 0;	481	PL_retstack_ix = 0;
524	PL_retstack_max = 8;	482	PL_retstack_max = 8;
		483	#endif
525		484
526	UNLOCK;	485	UNLOCK;
527	}	486	}
528		487
529	/*	488	/*
530	* destroy the stacks, the callchain etc...	489	* destroy the stacks, the callchain etc...
531	*/	490	*/
532	STATIC void	491	static void
533	destroy_stacks(pTHX)	492	destroy_stacks(pTHX)
534	{	493	{
535	if (!IN_DESTRUCT)	494	if (!IN_DESTRUCT)
536	{	495	{
537	/* is this ugly, I ask? */	496	/* is this ugly, I ask? */
…		…
569		528
570	Safefree (PL_tmps_stack);	529	Safefree (PL_tmps_stack);
571	Safefree (PL_markstack);	530	Safefree (PL_markstack);
572	Safefree (PL_scopestack);	531	Safefree (PL_scopestack);
573	Safefree (PL_savestack);	532	Safefree (PL_savestack);
		533	#if PERL_VERSION < 9
574	Safefree (PL_retstack);	534	Safefree (PL_retstack);
575	}
576
577	static void
578	allocate_stack (Coro__State ctx, int alloc)
579	{
580	coro_stack *stack;
581
582	New (0, stack, 1, coro_stack);
583
584	stack->refcnt = 1;
585	stack->usecnt = 1;
586	stack->gencnt = ctx->gencnt = 0;
587
588	if (alloc)
589	{
590	#if HAVE_MMAP
591	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
592	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
593	if (stack->sptr == (void *)-1)
594	#endif	535	#endif
595	{
596	/FIXME//D//* reasonable stack size! */
597	stack->ssize = - (8192 * sizeof (long));
598	New (0, stack->sptr, 8192, long);
599	}
600	}
601	else
602	stack->sptr = 0;
603
604	ctx->stack = stack;
605	}	536	}
606		537
607	static void	538	static void
608	deallocate_stack (Coro__State ctx)	539	setup_coro (struct coro *coro)
609	{
610	coro_stack *stack = ctx->stack;
611
612	ctx->stack = 0;
613
614	if (stack)
615	{
616	if (!--stack->refcnt)
617	{
618	#ifdef HAVE_MMAP
619	if (stack->ssize > 0 && stack->sptr)
620	munmap (stack->sptr, stack->ssize);
621	else
622	#endif
623	Safefree (stack->sptr);
624
625	Safefree (stack);
626	}
627	else if (ctx->gencnt == stack->gencnt)
628	--stack->usecnt;
629	}
630	}
631
632	static void
633	setup_coro (void *arg)
634	{	540	{
635	/*	541	/*
636	* emulate part of the perl startup here.	542	* emulate part of the perl startup here.
637	*/	543	*/
638	dTHX;	544	dTHX;
639	dSP;	545	dSP;
640	Coro__State ctx = (Coro__State)arg;	546	UNOP myop;
641	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
642		548
643	coro_init_stacks (aTHX);	549	coro_init_stacks (aTHX);
644	/PL_curcop = 0;/	550	/PL_curcop = 0;/
645	/PL_in_eval = PL_in_eval;/ /* inherit */	551	/PL_in_eval = PL_in_eval;/ /* inherit */
646	SvREFCNT_dec (GvAV (PL_defgv));	552	SvREFCNT_dec (GvAV (PL_defgv));
647	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	553	GvAV (PL_defgv) = coro->args; coro->args = 0;
648		554
649	SPAGAIN;	555	SPAGAIN;
650		556
651	if (ctx->stack)
652	{
653	ctx->cursp = 0;
654
655	PUSHMARK(SP);
656	PUTBACK;
657	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
658
659	if (SvTRUE (ERRSV))
660	croak (NULL);
661	else
662	croak ("FATAL: CCTXT coroutine returned!");
663	}
664	else
665	{
666	UNOP myop;
667
668	PL_op = (OP *)&myop;
669
670	Zero(&myop, 1, UNOP);	557	Zero (&myop, 1, UNOP);
671	myop.op_next = Nullop;	558	myop.op_next = Nullop;
672	myop.op_flags = OPf_WANT_VOID;	559	myop.op_flags = OPf_WANT_VOID;
673		560
		561	PL_op = (OP *)&myop;
		562
674	PUSHMARK(SP);	563	PUSHMARK(SP);
675	XPUSHs (sub_init);	564	XPUSHs (sub_init);
676	/*
677	* the next line is slightly wrong, as PL_op->op_next
678	* is actually being executed so we skip the first op.
679	* that doesn't matter, though, since it is only
680	* pp_nextstate and we never return...
681	* ah yes, and I don't care anyways ;)
682	*/
683	PUTBACK;	565	PUTBACK;
684	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
685	SPAGAIN;	567	SPAGAIN;
686		568
687	ENTER; /* necessary e.g. for dounwind */	569	ENTER; /* necessary e.g. for dounwind */
688	}
689	}	570	}
690		571
691	static void	572	static void
692	continue_coro (void *arg)	573	free_coro_mortal ()
693	{	574	{
694	/*
695	* this is a _very_ stripped down perl interpreter ;)
696	*/
697	dTHX;
698	Coro__State ctx = (Coro__State)arg;
699	JMPENV coro_start_env;
700
701	PL_top_env = &ctx->start_env;
702
703	ctx->cursp = 0;
704	PL_op = PL_op->op_next;
705	CALLRUNOPS(aTHX);
706
707	abort ();
708	}
709
710	STATIC void
711	transfer (pTHX_ struct coro prev, struct coro next, int flags)
712	{
713	dSTACKLEVEL;
714
715	if (prev != next)
716	{
717	if (next->mainstack)
718	{
719	LOCK;
720	SAVE (prev, flags);
721	LOAD (next);
722	UNLOCK;
723
724	/* mark this state as in-use */
725	next->mainstack = 0;
726	next->tmps_ix = -2;
727
728	/* stacklevel changed? if yes, grab the stack for us! */
729	if (flags & TRANSFER_SAVE_CCTXT)
730	{
731	if (!prev->stack)
732	allocate_stack (prev, 0);
733	else if (prev->cursp != stacklevel
734	&& prev->stack->usecnt > 1)
735	{
736	prev->gencnt = ++prev->stack->gencnt;
737	prev->stack->usecnt = 1;
738	}
739
740	/* has our stack been invalidated? */
741	if (next->stack && next->stack->gencnt != next->gencnt)
742	{
743	deallocate_stack (next);
744	allocate_stack (next, 1);
745	coro_create (&(next->stack->cctx),
746	continue_coro, (void *)next,
747	next->stack->sptr, labs (next->stack->ssize));
748	}
749
750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
751	prev->cursp = stacklevel;
752	/* don't add any code here */
753	}
754	else
755	next->cursp = stacklevel;
756	}
757	else if (next->tmps_ix == -2)
758	croak ("tried to transfer to running coroutine");
759	else
760	{
761	LOCK;
762	SAVE (prev, -1); /* first get rid of the old state */
763	UNLOCK;
764
765	if (flags & TRANSFER_SAVE_CCTXT)
766	{
767	if (!prev->stack)
768	allocate_stack (prev, 0);
769
770	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
771	{
772	PL_top_env = &next->start_env;
773
774	setup_coro (next);
775	next->cursp = stacklevel;
776
777	prev->stack->refcnt++;
778	prev->stack->usecnt++;
779	next->stack = prev->stack;
780	next->gencnt = prev->gencnt;
781	}
782	else
783	{
784	assert (!next->stack);
785	allocate_stack (next, 1);
786	coro_create (&(next->stack->cctx),
787	setup_coro, (void *)next,
788	next->stack->sptr, labs (next->stack->ssize));
789	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
790	prev->cursp = stacklevel;
791	/* don't add any code here */
792	}
793	}
794	else
795	{
796	setup_coro (next);
797	next->cursp = stacklevel;
798	}
799	}
800	}
801
802	LOCK;
803	if (coro_mortal)	575	if (coro_mortal)
804	{	576	{
805	SvREFCNT_dec (coro_mortal);	577	SvREFCNT_dec (coro_mortal);
806	coro_mortal = 0;	578	coro_mortal = 0;
807	}	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
808	UNLOCK;	591	UNLOCK;
809	}
810		592
811	#define SV_CORO(sv,func) \	593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
812	do { \	594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
813	if (SvROK (sv)) \	595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
814	sv = SvRV (sv); \
815	\
816	if (SvTYPE (sv) == SVt_PVHV) \
817	{ \
818	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
819	\
820	if (!he) \
821	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
822	\
823	(sv) = SvRV (HeVAL(he)); \
824	} \
825	\
826	/* must also be changed inside Coro::Cont::yield */ \
827	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
828	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
829	\
830	} while(0)
831		596
832	#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);
833		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
834	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
835	api_transfer(pTHX_ SV prev, SV next, int flags)	833	api_transfer (SV prev, SV next, int flags)
836	{	834	{
837	SV_CORO (prev, "Coro::transfer");	835	dTHX;
838	SV_CORO (next, "Coro::transfer");	836	struct transfer_args ta;
839		837
840	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	838	prepare_transfer (aTHX_ &ta, prev, next, flags);
		839	TRANSFER (ta);
841	}	840	}
842		841
843	/ Coro ******************************************************************/	842	/ Coro ******************************************************************/
844		843
845	#define PRIO_MAX 3	844	#define PRIO_MAX 3
…		…
849	#define PRIO_IDLE -3	848	#define PRIO_IDLE -3
850	#define PRIO_MIN -4	849	#define PRIO_MIN -4
851		850
852	/* for Coro.pm */	851	/* for Coro.pm */
853	static GV coro_current, coro_idle;	852	static GV coro_current, coro_idle;
854	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	853	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
855	static int coro_nready;	854	static int coro_nready;
856		855
857	static void	856	static void
858	coro_enq (pTHX_ SV *sv)	857	coro_enq (pTHX_ SV *sv)
859	{	858	{
		859	int prio;
		860
860	if (SvTYPE (sv) == SVt_PVHV)	861	if (SvTYPE (sv) != SVt_PVHV)
861	{
862	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
863	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
864
865	prio = prio > PRIO_MAX ? PRIO_MAX
866	: prio < PRIO_MIN ? PRIO_MIN
867	: prio;
868
869	av_push (coro_ready [prio - PRIO_MIN], sv);
870	coro_nready++;
871
872	return;
873	}
874
875	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++;
876	}	868	}
877		869
878	static SV *	870	static SV *
879	coro_deq (pTHX_ int min_prio)	871	coro_deq (pTHX_ int min_prio)
880	{	872	{
…		…
883	min_prio -= PRIO_MIN;	875	min_prio -= PRIO_MIN;
884	if (min_prio < 0)	876	if (min_prio < 0)
885	min_prio = 0;	877	min_prio = 0;
886		878
887	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	879	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
888	if (av_len (coro_ready[prio]) >= 0)	880	if (AvFILLp (coro_ready [prio]) >= 0)
889	{	881	{
890	coro_nready--;	882	coro_nready--;
891	return av_shift (coro_ready[prio]);	883	return av_shift (coro_ready [prio]);
892	}	884	}
893		885
894	return 0;	886	return 0;
895	}	887	}
896		888
…		…
906	coro_enq (aTHX_ SvREFCNT_inc (coro));	898	coro_enq (aTHX_ SvREFCNT_inc (coro));
907	UNLOCK;	899	UNLOCK;
908	}	900	}
909		901
910	static void	902	static void
911	api_schedule (void)	903	prepare_schedule (aTHX_ struct transfer_args *ta)
912	{	904	{
913	dTHX;
914
915	SV prev, next;	905	SV current, prev, *next;
916		906
917	LOCK;	907	LOCK;
918		908
919	prev = SvRV (GvSV (coro_current));	909	current = GvSV (coro_current);
		910
		911	for (;;)
		912	{
		913	LOCK;
		914
920	next = coro_deq (aTHX_ PRIO_MIN);	915	next = coro_deq (aTHX_ PRIO_MIN);
921		916
922	if (!next)	917	if (next)
923	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;
924		939
925	/* free this only after the transfer */	940	/* free this only after the transfer */
		941	free_coro_mortal ();
926	coro_mortal = prev;	942	coro_mortal = prev;
927	SV_CORO (prev, "Coro::schedule");
928		943
929	SvRV (GvSV (coro_current)) = next;	944	ta->prev = SvSTATE (prev);
930		945	ta->next = SvSTATE (next);
931	SV_CORO (next, "Coro::schedule");	946	ta->flags = TRANSFER_SAVE_ALL;
932		947
933	UNLOCK;	948	UNLOCK;
934
935	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
936	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
937	}	949	}
938		950
939	static void	951	static void
940	api_cede (void)	952	prepare_cede (aTHX_ struct transfer_args *ta)
941	{	953	{
942	dTHX;
943
944	LOCK;	954	LOCK;
945	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
946	UNLOCK;	956	UNLOCK;
947		957
		958	prepare_schedule (ta);
		959	}
		960
		961	static void
948	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);
949	}	979	}
950		980
951	MODULE = Coro::State PACKAGE = Coro::State	981	MODULE = Coro::State PACKAGE = Coro::State
952		982
953	PROTOTYPES: ENABLE	983	PROTOTYPES: DISABLE
954		984
955	BOOT:	985	BOOT:
956	{ /* {} necessary for stoopid perl-5.6.x */	986	{
957	#ifdef USE_ITHREADS	987	#ifdef USE_ITHREADS
958	MUTEX_INIT (&coro_mutex);	988	MUTEX_INIT (&coro_mutex);
959	#endif	989	#endif
		990	BOOT_PAGESIZE;
960		991
961	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
962	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
963	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	992	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
964		993
965	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	994	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
966	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	995	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
967	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	996	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
968	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
969		997
970	main_mainstack = PL_mainstack;	998	main_mainstack = PL_mainstack;
971		999
972	coroapi.ver = CORO_API_VERSION;	1000	coroapi.ver = CORO_API_VERSION;
973	coroapi.transfer = api_transfer;	1001	coroapi.transfer = api_transfer;
974	}
975		1002
976	Coro::State	1003	Newz (0, main_stack, 1, coro_stack);
977	_newprocess(args)	1004	main_stack->idle_sp = (void *)-1;
978	SV * args	1005
979	PROTOTYPE: $	1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		1007	}
		1008
		1009	SV *
		1010	new (char *klass, ...)
980	CODE:	1011	CODE:
981	Coro__State coro;	1012	{
		1013	struct coro *coro;
		1014	HV *hv;
		1015	int i;
982		1016
983	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
984	croak ("Coro::State::_newprocess expects an arrayref");
985
986	Newz (0, coro, 1, struct coro);	1017	Newz (0, coro, 1, struct coro);
		1018	coro->args = newAV ();
987		1019
988	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;
989	/coro->mainstack = 0; //actual work is done inside transfer /	1028	/coro->mainstack = 0; //actual work is done inside transfer /
990	/coro->stack = 0;/	1029	/coro->stack = 0;/
991		1030	}
992	/* same as JMPENV_BOOTSTRAP */
993	/* we might be able to recycle start_env, but safe is safe */
994	/Zero(&coro->start_env, 1, JMPENV);/
995	coro->start_env.je_ret = -1;
996	coro->start_env.je_mustcatch = TRUE;
997
998	RETVAL = coro;
999	OUTPUT:	1031	OUTPUT:
1000	RETVAL	1032	RETVAL
1001		1033
1002	void	1034	void
1003	transfer(prev, next, flags)	1035	transfer (...)
1004	SV *prev	1036	ALIAS:
1005	SV *next	1037	Coro::schedule = 1
1006	int flags	1038	Coro::cede = 2
1007	PROTOTYPE: @	1039	_set_stacklevel = 3
1008	CODE:	1040	CODE:
1009	PUTBACK;	1041	{
1010	SV_CORO (next, "Coro::transfer");	1042	struct transfer_args ta;
1011	SV_CORO (prev, "Coro::transfer");	1043
1012	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1044	switch (ix)
1013	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	}
1014		1070
1015	void	1071	void
1016	DESTROY(coro)	1072	_clone_state_from (SV dst, SV src)
1017	Coro::State coro	1073	CODE:
1018	CODE:	1074	{
		1075	struct coro *coro_src = SvSTATE (src);
1019		1076
1020	if (coro->mainstack && coro->mainstack != main_mainstack)	1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1021	{
1022	struct coro temp;
1023		1078
1024	PUTBACK;	1079	++coro_src->refcnt;
1025	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;
1026	LOAD (aTHX_ coro);	1081	}
1027	SPAGAIN;
1028
1029	destroy_stacks (aTHX);
1030
1031	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1032	SPAGAIN;
1033
1034	coro->mainstack = 0;
1035	}
1036
1037	deallocate_stack (coro);
1038	SvREFCNT_dec (coro->args);
1039	Safefree (coro);
1040		1082
1041	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
1042	_exit(code)	1090	_exit (code)
1043	int code	1091	int code
1044	PROTOTYPE: $	1092	PROTOTYPE: $
1045	CODE:	1093	CODE:
1046	_exit (code);	1094	_exit (code);
1047		1095
1048	MODULE = Coro::State PACKAGE = Coro::Cont	1096	MODULE = Coro::State PACKAGE = Coro::Cont
1049		1097
1050	# this is slightly dirty (should expose a c-level api)
1051
1052	void	1098	void
1053	yield(...)	1099	yield (...)
1054	PROTOTYPE: @	1100	PROTOTYPE: @
1055	CODE:	1101	CODE:
1056	static SV *returnstk;	1102	{
		1103	SV *yieldstack;
1057	SV *sv;	1104	SV *sv;
1058	AV *defav = GvAV (PL_defgv);	1105	AV *defav = GvAV (PL_defgv);
1059	struct coro prev, next;	1106	struct coro prev, next;
1060		1107
1061	if (!returnstk)	1108	yieldstack = *hv_fetch (
1062	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));	1109	(HV *)SvRV (GvSV (coro_current)),
		1110	"yieldstack", sizeof ("yieldstack") - 1,
		1111	0
		1112	);
1063		1113
1064	/* set up @_ -- ugly */	1114	/* set up @_ -- ugly */
1065	av_clear (defav);	1115	av_clear (defav);
1066	av_fill (defav, items - 1);	1116	av_fill (defav, items - 1);
1067	while (items--)	1117	while (items--)
1068	av_store (defav, items, SvREFCNT_inc (ST(items)));	1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1069		1119
1070	SvGETMAGIC (returnstk); /* isn't documentation wrong for mg_get? */
1071	sv = av_pop ((AV *)SvRV (returnstk));	1120	sv = av_pop ((AV *)SvRV (yieldstack));
1072	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1121	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1073	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1122	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1074	SvREFCNT_dec (sv);	1123	SvREFCNT_dec (sv);
1075		1124
1076	transfer (aTHX_ prev, next, 0);	1125	coro_state_transfer (aTHX_ prev, next, 0);
		1126	}
1077		1127
1078	MODULE = Coro::State PACKAGE = Coro	1128	MODULE = Coro::State PACKAGE = Coro
1079		1129
1080	# this is slightly dirty (should expose a c-level api)
1081
1082	BOOT:	1130	BOOT:
1083	{	1131	{
1084	int i;	1132	int i;
		1133
1085	HV *stash = gv_stashpv ("Coro", TRUE);	1134	coro_stash = gv_stashpv ("Coro", TRUE);
1086		1135
1087	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1136	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1088	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1137	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1089	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1138	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1090	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1139	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1091	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1140	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1092	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1141	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1093		1142
1094	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1143	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1095	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1144	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1096		1145
1097	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1146	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1105	coroapi.ready = api_ready;	1154	coroapi.ready = api_ready;
1106	coroapi.nready = &coro_nready;	1155	coroapi.nready = &coro_nready;
1107	coroapi.current = coro_current;	1156	coroapi.current = coro_current;
1108		1157
1109	GCoroAPI = &coroapi;	1158	GCoroAPI = &coroapi;
1110	sv_setiv(sv, (IV)&coroapi);	1159	sv_setiv (sv, (IV)&coroapi);
1111	SvREADONLY_on(sv);	1160	SvREADONLY_on (sv);
1112	}	1161	}
1113	}	1162	}
1114		1163
1115	#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	}
1116		1183
1117	void	1184	void
1118	ready(self)	1185	ready (SV *self)
1119	SV * self
1120	PROTOTYPE: $	1186	PROTOTYPE: $
1121	CODE:	1187	CODE:
1122	api_ready (self);	1188	api_ready (self);
1123		1189
1124	#endif
1125
1126	int	1190	int
1127	nready(...)	1191	nready (...)
1128	PROTOTYPE:	1192	PROTOTYPE:
1129	CODE:	1193	CODE:
1130	RETVAL = coro_nready;	1194	RETVAL = coro_nready;
1131	OUTPUT:	1195	OUTPUT:
1132	RETVAL	1196	RETVAL
1133		1197
		1198	MODULE = Coro::State PACKAGE = Coro::AIO
		1199
		1200	SV *
		1201	_get_state ()
		1202	CODE:
		1203	{
		1204	struct {
		1205	int errorno;
		1206	int laststype;
		1207	int laststatval;
		1208	Stat_t statcache;
		1209	} data;
		1210
		1211	data.errorno = errno;
		1212	data.laststype = PL_laststype;
		1213	data.laststatval = PL_laststatval;
		1214	data.statcache = PL_statcache;
		1215
		1216	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1217	}
		1218	OUTPUT:
		1219	RETVAL
		1220
1134	void	1221	void
1135	schedule(...)	1222	_set_state (char *data_)
1136	PROTOTYPE:	1223	PROTOTYPE: $
1137	CODE:	1224	CODE:
1138	api_schedule ();	1225	{
		1226	struct {
		1227	int errorno;
		1228	int laststype;
		1229	int laststatval;
		1230	Stat_t statcache;
		1231	} data = (void )data_;
1139		1232
1140	void	1233	errno = data->errorno;
1141	cede(...)	1234	PL_laststype = data->laststype;
1142	PROTOTYPE:	1235	PL_laststatval = data->laststatval;
1143	CODE:	1236	PL_statcache = data->statcache;
1144	api_cede ();	1237	}
1145

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Comparing Coro/Coro/State.xs (file contents): Revision 1.62 by root, Tue Feb 22 19:51:58 2005 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 1.62 by root, Tue Feb 22 19:51:58 2005 UTC vs.
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC