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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.64 by root, Mon Mar 21 15:06:51 2005 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC

…		…
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "patchlevel.h"	9	#include "patchlevel.h"
10		10
11	#if PATCHLEVEL < 6	11	#if PERL_VERSION < 6
12	# ifndef PL_ppaddr	12	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	13	# define PL_ppaddr ppaddr
14	# endif	14	# endif
15	# ifndef call_sv	15	# ifndef call_sv
16	# define call_sv perl_call_sv	16	# define call_sv perl_call_sv
…		…
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 <signal.h>	32	#include <errno.h>
		33
		34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		35	# undef STACKGUARD
		36	#endif
		37
		38	#ifndef STACKGUARD
		39	# define STACKGUARD 0
		40	#endif
33		41
34	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
35	# include <unistd.h>	43	# include <unistd.h>
36	# include <sys/mman.h>	44	# include <sys/mman.h>
37	# ifndef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
…		…
39	# define MAP_ANONYMOUS MAP_ANON	47	# define MAP_ANONYMOUS MAP_ANON
40	# else	48	# else
41	# undef HAVE_MMAP	49	# undef HAVE_MMAP
42	# endif	50	# endif
43	# endif	51	# endif
		52	# include <limits.h>
		53	# ifndef PAGESIZE
		54	# define PAGESIZE pagesize
		55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		56	static long pagesize;
		57	# else
		58	# define BOOT_PAGESIZE
44	#endif	59	# endif
		60	#endif
45		61
46	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
47	#define UCORO_STATE "_coro_state"
48		63
49	/* The next macro should declare a variable stacklevel that contains and approximation	64	/* 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	65	* to the current C stack pointer. Its property is that it changes with each call
51	* and should be unique. */	66	* and should be unique. */
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define dSTACKLEVEL void *stacklevel = &stacklevel
…		…
57		72
58	#include "CoroAPI.h"	73	#include "CoroAPI.h"
59		74
60	#ifdef USE_ITHREADS	75	#ifdef USE_ITHREADS
61	static perl_mutex coro_mutex;	76	static perl_mutex coro_mutex;
62	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
63	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
64	#else	79	#else
65	# define LOCK 0	80	# define LOCK (void)0
66	# define UNLOCK 0	81	# define UNLOCK (void)0
67	#endif	82	#endif
68		83
69	static struct CoroAPI coroapi;	84	static struct CoroAPI coroapi;
70	static AV main_mainstack; / used to differentiate between $main and others */	85	static AV main_mainstack; / used to differentiate between $main and others */
71	static HV *coro_state_stash;	86	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 */	87	static SV coro_mortal; / will be freed after next transfer */
75		88
76	/* this is actually not only the c stack but also c registers etc... */	89	/* this is actually not only the c stack but also c registers etc... */
77	typedef struct {	90	typedef struct {
78	int refcnt; /* pointer reference counter */	91	int refcnt; /* pointer reference counter */
…		…
84	void *sptr;	97	void *sptr;
85	long ssize; /* positive == mmap, otherwise malloc */	98	long ssize; /* positive == mmap, otherwise malloc */
86	} coro_stack;	99	} coro_stack;
87		100
88	struct coro {	101	struct coro {
89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
90	JMPENV start_env;
91
92	/* the optional C context */	102	/* the optional C context */
93	coro_stack *stack;	103	coro_stack *stack;
94	void *cursp;	104	void *cursp;
95	int gencnt;	105	int gencnt;
96		106
…		…
128	I32 savestack_ix;	138	I32 savestack_ix;
129	I32 savestack_max;	139	I32 savestack_max;
130	OP **retstack;	140	OP **retstack;
131	I32 retstack_ix;	141	I32 retstack_ix;
132	I32 retstack_max;	142	I32 retstack_max;
		143	PMOP *curpm;
133	COP *curcop;	144	COP *curcop;
134	JMPENV *top_env;	145	JMPENV *top_env;
135		146
		147	/* coro process data */
		148	int prio;
		149
136	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
137	AV *args;	151	AV *args;
		152	int refcnt;
138	};	153	};
139		154
140	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
141	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
142		157
143	/* mostly copied from op.c:cv_clone2 */	158	static AV *
144	STATIC AV *	159	coro_clone_padlist (pTHX_ CV *cv)
145	clone_padlist (pTHX_ AV *protopadlist)
146	{	160	{
147	AV *av;	161	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;	162	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		163
166	newpadlist = newAV ();	164	newpadlist = newAV ();
167	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
168	av_store (newpadlist, 0, (SV *) newpad_name);	166	#if PERL_VERSION < 9
		167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		168	#else
		169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		170	#endif
		171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		172	--AvFILLp (padlist);
		173
		174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
169	av_store (newpadlist, 1, (SV *) newpad);	175	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		176
240	return newpadlist;	177	return newpadlist;
241	}	178	}
242		179
243	STATIC void	180	static void
244	free_padlist (pTHX_ AV *padlist)	181	free_padlist (pTHX_ AV *padlist)
245	{	182	{
246	/* may be during global destruction */	183	/* may be during global destruction */
247	if (SvREFCNT (padlist))	184	if (SvREFCNT (padlist))
248	{	185	{
…		…
262		199
263	SvREFCNT_dec ((SV*)padlist);	200	SvREFCNT_dec ((SV*)padlist);
264	}	201	}
265	}	202	}
266		203
267	STATIC int	204	static int
268	coro_cv_free (pTHX_ SV sv, MAGIC mg)	205	coro_cv_free (pTHX_ SV sv, MAGIC mg)
269	{	206	{
270	AV *padlist;	207	AV *padlist;
271	AV av = (AV )mg->mg_obj;	208	AV av = (AV )mg->mg_obj;
272		209
273	/* casting is fun. */	210	/* casting is fun. */
274	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
275	free_padlist (aTHX_ padlist);	212	free_padlist (aTHX_ padlist);
276		213
277	SvREFCNT_dec (av);	214	SvREFCNT_dec (av);
		215
		216	return 0;
278	}	217	}
279		218
280	#define PERL_MAGIC_coro PERL_MAGIC_ext	219	#define PERL_MAGIC_coro PERL_MAGIC_ext
281		220
282	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
283		222
284	/* the next two functions merely cache the padlists */	223	/* the next two functions merely cache the padlists */
285	STATIC void	224	static void
286	get_padlist (pTHX_ CV *cv)	225	get_padlist (pTHX_ CV *cv)
287	{	226	{
288	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
289		228
290	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
291	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
292	else	231	else
		232	{
		233	#if 0
		234	/* this should work - but it doesn't :( */
		235	CV *cp = Perl_cv_clone (aTHX_ cv);
		236	CvPADLIST (cv) = CvPADLIST (cp);
		237	CvPADLIST (cp) = 0;
		238	SvREFCNT_dec (cp);
		239	#else
293	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));	240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		241	#endif
		242	}
294	}	243	}
295		244
296	STATIC void	245	static void
297	put_padlist (pTHX_ CV *cv)	246	put_padlist (pTHX_ CV *cv)
298	{	247	{
299	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
300		249
301	if (!mg)	250	if (!mg)
…		…
344	PL_scopestack_ix = c->scopestack_ix;	293	PL_scopestack_ix = c->scopestack_ix;
345	PL_scopestack_max = c->scopestack_max;	294	PL_scopestack_max = c->scopestack_max;
346	PL_savestack = c->savestack;	295	PL_savestack = c->savestack;
347	PL_savestack_ix = c->savestack_ix;	296	PL_savestack_ix = c->savestack_ix;
348	PL_savestack_max = c->savestack_max;	297	PL_savestack_max = c->savestack_max;
		298	#if PERL_VERSION < 9
349	PL_retstack = c->retstack;	299	PL_retstack = c->retstack;
350	PL_retstack_ix = c->retstack_ix;	300	PL_retstack_ix = c->retstack_ix;
351	PL_retstack_max = c->retstack_max;	301	PL_retstack_max = c->retstack_max;
		302	#endif
		303	PL_curpm = c->curpm;
352	PL_curcop = c->curcop;	304	PL_curcop = c->curcop;
353	PL_top_env = c->top_env;	305	PL_top_env = c->top_env;
354		306
355	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
356	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
415	}	367	}
416		368
417	PUSHs ((SV *)CvPADLIST(cv));	369	PUSHs ((SV *)CvPADLIST(cv));
418	PUSHs ((SV *)cv);	370	PUSHs ((SV *)cv);
419		371
420	get_padlist (aTHX_ cv); /* this is a monster */	372	get_padlist (aTHX_ cv);
421	}	373	}
422	}	374	}
423	#ifdef CXt_FORMAT	375	#ifdef CXt_FORMAT
424	else if (CxTYPE(cx) == CXt_FORMAT)	376	else if (CxTYPE(cx) == CXt_FORMAT)
425	{	377	{
…		…
469	c->scopestack_ix = PL_scopestack_ix;	421	c->scopestack_ix = PL_scopestack_ix;
470	c->scopestack_max = PL_scopestack_max;	422	c->scopestack_max = PL_scopestack_max;
471	c->savestack = PL_savestack;	423	c->savestack = PL_savestack;
472	c->savestack_ix = PL_savestack_ix;	424	c->savestack_ix = PL_savestack_ix;
473	c->savestack_max = PL_savestack_max;	425	c->savestack_max = PL_savestack_max;
		426	#if PERL_VERSION < 9
474	c->retstack = PL_retstack;	427	c->retstack = PL_retstack;
475	c->retstack_ix = PL_retstack_ix;	428	c->retstack_ix = PL_retstack_ix;
476	c->retstack_max = PL_retstack_max;	429	c->retstack_max = PL_retstack_max;
		430	#endif
		431	c->curpm = PL_curpm;
477	c->curcop = PL_curcop;	432	c->curcop = PL_curcop;
478	c->top_env = PL_top_env;	433	c->top_env = PL_top_env;
479	}	434	}
480		435
481	/*	436	/*
482	* allocate various perl stacks. This is an exact copy	437	* allocate various perl stacks. This is an exact copy
483	* of perl.c:init_stacks, except that it uses less memory	438	* of perl.c:init_stacks, except that it uses less memory
484	* on the (sometimes correct) assumption that coroutines do	439	* on the (sometimes correct) assumption that coroutines do
485	* not usually need a lot of stackspace.	440	* not usually need a lot of stackspace.
486	*/	441	*/
487	STATIC void	442	static void
488	coro_init_stacks (pTHX)	443	coro_init_stacks (pTHX)
489	{	444	{
490	LOCK;	445	LOCK;
491		446
492	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
517		472
518	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,96,ANY);
519	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
520	PL_savestack_max = 96;	475	PL_savestack_max = 96;
521		476
		477	#if PERL_VERSION < 9
522	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,8,OP*);
523	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
524	PL_retstack_max = 8;	480	PL_retstack_max = 8;
		481	#endif
525		482
526	UNLOCK;	483	UNLOCK;
527	}	484	}
528		485
529	/*	486	/*
530	* destroy the stacks, the callchain etc...	487	* destroy the stacks, the callchain etc...
531	*/	488	*/
532	STATIC void	489	static void
533	destroy_stacks(pTHX)	490	destroy_stacks(pTHX)
534	{	491	{
535	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
536	{	493	{
537	/* is this ugly, I ask? */	494	/* is this ugly, I ask? */
…		…
569		526
570	Safefree (PL_tmps_stack);	527	Safefree (PL_tmps_stack);
571	Safefree (PL_markstack);	528	Safefree (PL_markstack);
572	Safefree (PL_scopestack);	529	Safefree (PL_scopestack);
573	Safefree (PL_savestack);	530	Safefree (PL_savestack);
		531	#if PERL_VERSION < 9
574	Safefree (PL_retstack);	532	Safefree (PL_retstack);
		533	#endif
575	}	534	}
576		535
577	static void	536	static void
578	allocate_stack (Coro__State ctx, int alloc)	537	allocate_stack (Coro__State ctx, int alloc)
579	{	538	{
…		…
586	stack->gencnt = ctx->gencnt = 0;	545	stack->gencnt = ctx->gencnt = 0;
587		546
588	if (alloc)	547	if (alloc)
589	{	548	{
590	#if HAVE_MMAP	549	#if HAVE_MMAP
591	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */	550	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* 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);	551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
593	if (stack->sptr == (void *)-1)	552	if (stack->sptr != (void *)-1)
594	#endif
595	{	553	{
596	/FIXME//D//* reasonable stack size! */	554	# if STACKGUARD
		555	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		556	# endif
		557	}
		558	else
		559	#endif
		560	{
597	stack->ssize = - (8192 * sizeof (long));	561	stack->ssize = - (STACKSIZE * (long)sizeof (long));
598	New (0, stack->sptr, 8192, long);	562	New (0, stack->sptr, STACKSIZE, long);
599	}	563	}
600	}	564	}
601	else	565	else
602	stack->sptr = 0;	566	stack->sptr = 0;
603		567
…		…
663	}	627	}
664	else	628	else
665	{	629	{
666	UNOP myop;	630	UNOP myop;
667		631
668	PL_op = (OP *)&myop;
669
670	Zero(&myop, 1, UNOP);	632	Zero(&myop, 1, UNOP);
671	myop.op_next = Nullop;	633	myop.op_next = Nullop;
672	myop.op_flags = OPf_WANT_VOID;	634	myop.op_flags = OPf_WANT_VOID;
		635
		636	PL_op = (OP *)&myop;
673		637
674	PUSHMARK(SP);	638	PUSHMARK(SP);
675	XPUSHs (sub_init);	639	XPUSHs (sub_init);
676	/*	640	/*
677	* the next line is slightly wrong, as PL_op->op_next	641	* the next line is slightly wrong, as PL_op->op_next
…		…
694	/*	658	/*
695	* this is a _very_ stripped down perl interpreter ;)	659	* this is a _very_ stripped down perl interpreter ;)
696	*/	660	*/
697	dTHX;	661	dTHX;
698	Coro__State ctx = (Coro__State)arg;	662	Coro__State ctx = (Coro__State)arg;
699	JMPENV coro_start_env;
700		663
701	PL_top_env = &ctx->start_env;	664	PL_top_env = &PL_start_env;
702		665
703	ctx->cursp = 0;	666	ctx->cursp = 0;
704	PL_op = PL_op->op_next;	667	PL_op = PL_op->op_next;
705	CALLRUNOPS(aTHX);	668	CALLRUNOPS(aTHX);
706		669
707	abort ();	670	abort ();
708	}	671	}
709		672
710	STATIC void	673	/* never call directly, always through the coro_state_transfer global variable */
		674	static void
711	transfer (pTHX_ struct coro prev, struct coro next, int flags)	675	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
712	{	676	{
713	dSTACKLEVEL;	677	dSTACKLEVEL;
714		678
715	if (prev != next)	679	if (prev != next)
716	{	680	{
		681	/* has this coro been created yet? */
717	if (next->mainstack)	682	if (next->mainstack)
718	{	683	{
719	LOCK;	684	LOCK;
720	SAVE (prev, flags);	685	SAVE (prev, flags);
721	LOAD (next);	686	LOAD (next);
…		…
760	{	725	{
761	LOCK;	726	LOCK;
762	SAVE (prev, -1); /* first get rid of the old state */	727	SAVE (prev, -1); /* first get rid of the old state */
763	UNLOCK;	728	UNLOCK;
764		729
		730	/* create the coroutine for the first time */
765	if (flags & TRANSFER_SAVE_CCTXT)	731	if (flags & TRANSFER_SAVE_CCTXT)
766	{	732	{
767	if (!prev->stack)	733	if (!prev->stack)
768	allocate_stack (prev, 0);	734	allocate_stack (prev, 0);
769		735
		736	/* the new coroutine starts with start_env again */
		737	PL_top_env = &PL_start_env;
		738
770	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	739	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
771	{	740	{
772	PL_top_env = &next->start_env;
773
774	setup_coro (next);	741	setup_coro (next);
775	next->cursp = stacklevel;	742	next->cursp = stacklevel;
776		743
777	prev->stack->refcnt++;	744	prev->stack->refcnt++;
778	prev->stack->usecnt++;	745	prev->stack->usecnt++;
…		…
806	coro_mortal = 0;	773	coro_mortal = 0;
807	}	774	}
808	UNLOCK;	775	UNLOCK;
809	}	776	}
810		777
811	#define SV_CORO(sv,func) \	778	/* use this function pointer to call the above function */
812	do { \	779	/* this is done to increase chances of the compiler not inlining the call */
813	if (SvROK (sv)) \	780	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
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		781
832	#define SvSTATE(sv) (struct coro *)SvIV (sv)	782	static void
		783	coro_state_destroy (struct coro *coro)
		784	{
		785	if (coro->refcnt--)
		786	return;
833		787
		788	if (coro->mainstack && coro->mainstack != main_mainstack)
		789	{
		790	struct coro temp;
		791
		792	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		793	LOAD (aTHX_ coro);
		794
		795	destroy_stacks (aTHX);
		796
		797	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		798
		799	coro->mainstack = 0;
		800	}
		801
		802	deallocate_stack (coro);
		803	SvREFCNT_dec (coro->args);
		804	Safefree (coro);
		805	}
		806
834	static void	807	static int
		808	coro_state_clear (SV sv, MAGIC mg)
		809	{
		810	struct coro coro = (struct coro )mg->mg_ptr;
		811	mg->mg_ptr = 0;
		812
		813	coro_state_destroy (coro);
		814
		815	return 0;
		816	}
		817
		818	static int
		819	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		820	{
		821	struct coro coro = (struct coro )mg->mg_ptr;
		822
		823	++coro->refcnt;
		824
		825	return 0;
		826	}
		827
		828	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		829
		830	static struct coro *
		831	SvSTATE (SV *coro)
		832	{
		833	HV *stash;
		834	MAGIC *mg;
		835
		836	if (SvROK (coro))
		837	coro = SvRV (coro);
		838
		839	stash = SvSTASH (coro);
		840	if (stash != coro_stash && stash != coro_state_stash)
		841	{
		842	/* very slow, but rare, check */
		843	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		844	croak ("Coro::State object required");
		845	}
		846
		847	mg = SvMAGIC (coro);
		848	assert (mg->mg_type == PERL_MAGIC_ext);
		849	return (struct coro *)mg->mg_ptr;
		850	}
		851
		852	static void
835	api_transfer(pTHX_ SV prev, SV next, int flags)	853	api_transfer (pTHX_ SV prev, SV next, int flags)
836	{	854	{
837	SV_CORO (prev, "Coro::transfer");
838	SV_CORO (next, "Coro::transfer");
839
840	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	855	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
841	}	856	}
842		857
843	/ Coro ******************************************************************/	858	/ Coro ******************************************************************/
844		859
845	#define PRIO_MAX 3	860	#define PRIO_MAX 3
…		…
849	#define PRIO_IDLE -3	864	#define PRIO_IDLE -3
850	#define PRIO_MIN -4	865	#define PRIO_MIN -4
851		866
852	/* for Coro.pm */	867	/* for Coro.pm */
853	static GV coro_current, coro_idle;	868	static GV coro_current, coro_idle;
854	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
855	static int coro_nready;	870	static int coro_nready;
856		871
857	static void	872	static void
858	coro_enq (pTHX_ SV *sv)	873	coro_enq (pTHX_ SV *sv)
859	{	874	{
		875	int prio;
		876
860	if (SvTYPE (sv) == SVt_PVHV)	877	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");	878	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		879
		880	prio = SvSTATE (sv)->prio;
		881
		882	av_push (coro_ready [prio - PRIO_MIN], sv);
		883	coro_nready++;
876	}	884	}
877		885
878	static SV *	886	static SV *
879	coro_deq (pTHX_ int min_prio)	887	coro_deq (pTHX_ int min_prio)
880	{	888	{
…		…
883	min_prio -= PRIO_MIN;	891	min_prio -= PRIO_MIN;
884	if (min_prio < 0)	892	if (min_prio < 0)
885	min_prio = 0;	893	min_prio = 0;
886		894
887	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	895	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
888	if (av_len (coro_ready[prio]) >= 0)	896	if (AvFILLp (coro_ready [prio]) >= 0)
889	{	897	{
890	coro_nready--;	898	coro_nready--;
891	return av_shift (coro_ready[prio]);	899	return av_shift (coro_ready [prio]);
892	}	900	}
893		901
894	return 0;	902	return 0;
895	}	903	}
896		904
…		…
911	api_schedule (void)	919	api_schedule (void)
912	{	920	{
913	dTHX;	921	dTHX;
914		922
915	SV prev, next;	923	SV prev, next;
		924	SV *current = GvSV (coro_current);
916		925
		926	for (;;)
		927	{
917	LOCK;	928	LOCK;
918		929
919	prev = SvRV (GvSV (coro_current));
920	next = coro_deq (aTHX_ PRIO_MIN);	930	next = coro_deq (aTHX_ PRIO_MIN);
921		931
922	if (!next)	932	if (next)
923	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	933	break;
		934
		935	UNLOCK;
		936
		937	{
		938	dSP;
		939
		940	ENTER;
		941	SAVETMPS;
		942
		943	PUSHMARK (SP);
		944	PUTBACK;
		945	call_sv (GvSV (coro_idle), G_DISCARD);
		946
		947	FREETMPS;
		948	LEAVE;
		949	}
		950	}
		951
		952	prev = SvRV (current);
		953	SvRV (current) = next;
924		954
925	/* free this only after the transfer */	955	/* free this only after the transfer */
926	coro_mortal = prev;	956	coro_mortal = prev;
927	SV_CORO (prev, "Coro::schedule");
928
929	SvRV (GvSV (coro_current)) = next;
930
931	SV_CORO (next, "Coro::schedule");
932		957
933	UNLOCK;	958	UNLOCK;
934		959
935	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
936	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
937	}	962	}
938		963
939	static void	964	static void
940	api_cede (void)	965	api_cede (void)
941	{	966	{
…		…
948	api_schedule ();	973	api_schedule ();
949	}	974	}
950		975
951	MODULE = Coro::State PACKAGE = Coro::State	976	MODULE = Coro::State PACKAGE = Coro::State
952		977
953	PROTOTYPES: ENABLE	978	PROTOTYPES: DISABLE
954		979
955	BOOT:	980	BOOT:
956	{ /* {} necessary for stoopid perl-5.6.x */	981	{
957	#ifdef USE_ITHREADS	982	#ifdef USE_ITHREADS
958	MUTEX_INIT (&coro_mutex);	983	MUTEX_INIT (&coro_mutex);
959	#endif	984	#endif
		985	BOOT_PAGESIZE;
960		986
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);	987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
964		988
965	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	989	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
966	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	990	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
967	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	991	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
…		…
969		993
970	main_mainstack = PL_mainstack;	994	main_mainstack = PL_mainstack;
971		995
972	coroapi.ver = CORO_API_VERSION;	996	coroapi.ver = CORO_API_VERSION;
973	coroapi.transfer = api_transfer;	997	coroapi.transfer = api_transfer;
974	}
975		998
976	Coro::State	999	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
977	_newprocess(args)	1000	}
978	SV * args	1001
979	PROTOTYPE: $	1002	SV *
		1003	new (char *klass, ...)
980	CODE:	1004	CODE:
981	Coro__State coro;	1005	{
		1006	struct coro *coro;
		1007	HV *hv;
		1008	int i;
982		1009
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);	1010	Newz (0, coro, 1, struct coro);
		1011	coro->args = newAV ();
987		1012
988	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1013	for (i = 1; i < items; i++)
		1014	av_push (coro->args, newSVsv (ST (i)));
		1015
989	/coro->mainstack = 0; //actual work is done inside transfer /	1016	/coro->mainstack = 0; //actual work is done inside transfer /
990	/coro->stack = 0;/	1017	/coro->stack = 0;/
991		1018
992	/* same as JMPENV_BOOTSTRAP */	1019	hv = newHV ();
993	/* we might be able to recycle start_env, but safe is safe */	1020	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
994	/Zero(&coro->start_env, 1, JMPENV);/	1021	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
995	coro->start_env.je_ret = -1;	1022	}
996	coro->start_env.je_mustcatch = TRUE;
997
998	RETVAL = coro;
999	OUTPUT:	1023	OUTPUT:
1000	RETVAL	1024	RETVAL
1001		1025
1002	void	1026	void
1003	transfer(prev, next, flags)	1027	transfer(prev, next, flags)
1004	SV *prev	1028	SV *prev
1005	SV *next	1029	SV *next
1006	int flags	1030	int flags
1007	PROTOTYPE: @
1008	CODE:	1031	CODE:
1009	PUTBACK;	1032	PUTBACK;
1010	SV_CORO (next, "Coro::transfer");
1011	SV_CORO (prev, "Coro::transfer");
1012	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1033	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1013	SPAGAIN;	1034	SPAGAIN;
1014		1035
		1036	int
		1037	prio (Coro::State coro, int newprio = 0)
		1038	ALIAS:
		1039	nice = 1
		1040	CODE:
		1041	{
		1042	RETVAL = coro->prio;
		1043
		1044	if (items > 1)
		1045	{
		1046	if (ix)
		1047	newprio += coro->prio;
		1048
		1049	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1050	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1051
		1052	coro->prio = newprio;
		1053	}
		1054	}
		1055
1015	void	1056	void
1016	DESTROY(coro)	1057	_clone_state_from (SV dst, SV src)
1017	Coro::State coro	1058	CODE:
1018	CODE:	1059	{
		1060	struct coro *coro_src = SvSTATE (src);
1019		1061
1020	if (coro->mainstack && coro->mainstack != main_mainstack)	1062	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1021	{
1022	struct coro temp;
1023		1063
1024	PUTBACK;	1064	++coro_src->refcnt;
1025	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1065	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1026	LOAD (aTHX_ coro);	1066	}
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		1067
1041	void	1068	void
1042	_exit(code)	1069	_exit (code)
1043	int code	1070	int code
1044	PROTOTYPE: $	1071	PROTOTYPE: $
1045	CODE:	1072	CODE:
1046	_exit (code);	1073	_exit (code);
1047		1074
1048	MODULE = Coro::State PACKAGE = Coro::Cont	1075	MODULE = Coro::State PACKAGE = Coro::Cont
1049		1076
1050	# this is slightly dirty (should expose a c-level api)
1051
1052	void	1077	void
1053	yield(...)	1078	yield (...)
1054	PROTOTYPE: @	1079	PROTOTYPE: @
1055	CODE:	1080	CODE:
		1081	{
1056	SV *yieldstack;	1082	SV *yieldstack;
1057	SV *sv;	1083	SV *sv;
1058	AV *defav = GvAV (PL_defgv);	1084	AV *defav = GvAV (PL_defgv);
1059	struct coro prev, next;	1085	struct coro prev, next;
1060		1086
…		…
1069	av_fill (defav, items - 1);	1095	av_fill (defav, items - 1);
1070	while (items--)	1096	while (items--)
1071	av_store (defav, items, SvREFCNT_inc (ST(items)));	1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
1072		1098
1073	sv = av_pop ((AV *)SvRV (yieldstack));	1099	sv = av_pop ((AV *)SvRV (yieldstack));
1074	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1100	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1075	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1101	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1076	SvREFCNT_dec (sv);	1102	SvREFCNT_dec (sv);
1077		1103
1078	transfer (aTHX_ prev, next, 0);	1104	coro_state_transfer (aTHX_ prev, next, 0);
		1105	}
1079		1106
1080	MODULE = Coro::State PACKAGE = Coro	1107	MODULE = Coro::State PACKAGE = Coro
1081		1108
1082	# this is slightly dirty (should expose a c-level api)
1083
1084	BOOT:	1109	BOOT:
1085	{	1110	{
1086	int i;	1111	int i;
		1112
1087	HV *stash = gv_stashpv ("Coro", TRUE);	1113	coro_stash = gv_stashpv ("Coro", TRUE);
1088		1114
1089	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1115	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1090	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1116	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1091	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1117	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1092	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1118	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1093	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1119	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1094	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1120	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1095		1121
1096	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1122	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1097	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1123	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1098		1124
1099	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1125	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1107	coroapi.ready = api_ready;	1133	coroapi.ready = api_ready;
1108	coroapi.nready = &coro_nready;	1134	coroapi.nready = &coro_nready;
1109	coroapi.current = coro_current;	1135	coroapi.current = coro_current;
1110		1136
1111	GCoroAPI = &coroapi;	1137	GCoroAPI = &coroapi;
1112	sv_setiv(sv, (IV)&coroapi);	1138	sv_setiv (sv, (IV)&coroapi);
1113	SvREADONLY_on(sv);	1139	SvREADONLY_on (sv);
1114	}	1140	}
1115	}	1141	}
1116		1142
1117	#if !PERL_MICRO	1143	#if !PERL_MICRO
1118		1144
1119	void	1145	void
1120	ready(self)	1146	ready (self)
1121	SV * self	1147	SV * self
1122	PROTOTYPE: $	1148	PROTOTYPE: $
1123	CODE:	1149	CODE:
1124	api_ready (self);	1150	api_ready (self);
1125		1151
1126	#endif	1152	#endif
1127		1153
1128	int	1154	int
1129	nready(...)	1155	nready (...)
1130	PROTOTYPE:	1156	PROTOTYPE:
1131	CODE:	1157	CODE:
1132	RETVAL = coro_nready;	1158	RETVAL = coro_nready;
1133	OUTPUT:	1159	OUTPUT:
1134	RETVAL	1160	RETVAL
1135		1161
1136	void	1162	void
1137	schedule(...)	1163	schedule (...)
1138	PROTOTYPE:	1164	PROTOTYPE:
1139	CODE:	1165	CODE:
1140	api_schedule ();	1166	api_schedule ();
1141		1167
1142	void	1168	void
1143	cede(...)	1169	cede (...)
1144	PROTOTYPE:	1170	PROTOTYPE:
1145	CODE:	1171	CODE:
1146	api_cede ();	1172	api_cede ();
1147		1173
		1174	# and these are hacks
		1175	SV *
		1176	_aio_get_state ()
		1177	CODE:
		1178	{
		1179	struct {
		1180	int errorno;
		1181	int laststype;
		1182	int laststatval;
		1183	Stat_t statcache;
		1184	} data;
		1185
		1186	data.errorno = errno;
		1187	data.laststype = PL_laststype;
		1188	data.laststatval = PL_laststatval;
		1189	data.statcache = PL_statcache;
		1190
		1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1192	}
		1193	OUTPUT:
		1194	RETVAL
		1195
		1196	void
		1197	_aio_set_state (char *data_)
		1198	PROTOTYPE: $
		1199	CODE:
		1200	{
		1201	struct {
		1202	int errorno;
		1203	int laststype;
		1204	int laststatval;
		1205	Stat_t statcache;
		1206	} data = (void )data_;
		1207
		1208	errno = data->errorno;
		1209	PL_laststype = data->laststype;
		1210	PL_laststatval = data->laststatval;
		1211	PL_statcache = data->statcache;
		1212	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.64 by root, Mon Mar 21 15:06:51 2005 UTC vs. Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.64 by root, Mon Mar 21 15:06:51 2005 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC