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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.44 by root, Sat Mar 22 18:50:32 2003 UTC vs.
Revision 1.58 by pcg, Fri May 14 13:25:09 2004 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		2
1	#include "EXTERN.h"	3	#include "EXTERN.h"
2	#include "perl.h"	4	#include "perl.h"
3	#include "XSUB.h"	5	#include "XSUB.h"
		6
		7	#include "patchlevel.h"
		8
		9	#if PATCHLEVEL < 6
		10	# ifndef PL_ppaddr
		11	# define PL_ppaddr ppaddr
		12	# endif
		13	# ifndef call_sv
		14	# define call_sv perl_call_sv
		15	# endif
		16	# ifndef get_sv
		17	# define get_sv perl_get_sv
		18	# endif
		19	# ifndef get_cv
		20	# define get_cv perl_get_cv
		21	# endif
		22	# ifndef IS_PADGV
		23	# define IS_PADGV(v) 0
		24	# endif
		25	# ifndef IS_PADCONST
		26	# define IS_PADCONST(v) 0
		27	# endif
		28	#endif
4		29
5	#include "libcoro/coro.c"	30	#include "libcoro/coro.c"
6		31
7	#include <signal.h>	32	#include <signal.h>
8		33
16	# undef HAVE_MMAP	41	# undef HAVE_MMAP
17	# endif	42	# endif
18	# endif	43	# endif
19	#endif	44	#endif
20		45
21	#define MAY_FLUSH /* increases codesize and is rarely used */
22
23	#define SUB_INIT "Coro::State::initialize"	46	#define SUB_INIT "Coro::State::initialize"
24	#define UCORO_STATE "_coro_state"	47	#define UCORO_STATE "_coro_state"
25		48
26	/* The next macro should declare a variable stacklevel that contains and approximation	49	/* The next macro should declare a variable stacklevel that contains and approximation
27	* to the current C stack pointer. Its property is that it changes with each call	50	* to the current C stack pointer. Its property is that it changes with each call
…		…
32		55
33	#define labs(l) ((l) >= 0 ? (l) : -(l))	56	#define labs(l) ((l) >= 0 ? (l) : -(l))
34		57
35	#include "CoroAPI.h"	58	#include "CoroAPI.h"
36		59
		60	#ifdef USE_ITHREADS
		61	static perl_mutex coro_mutex;
		62	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		63	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		64	#else
		65	# define LOCK 0
		66	# define UNLOCK 0
		67	#endif
		68
37	static struct CoroAPI coroapi;	69	static struct CoroAPI coroapi;
		70	static AV main_mainstack; / used to differentiate between $main and others */
		71	static HV *coro_state_stash;
		72	static SV *ucoro_state_sv;
		73	static U32 ucoro_state_hash;
		74	static SV coro_mortal; / will be freed after next transfer */
38		75
39	/* this is actually not only the c stack but also c registers etc... */	76	/* this is actually not only the c stack but also c registers etc... */
40	typedef struct {	77	typedef struct {
41	int refcnt; /* pointer reference counter */	78	int refcnt; /* pointer reference counter */
42	int usecnt; /* shared by how many coroutines */	79	int usecnt; /* shared by how many coroutines */
…		…
47	void *sptr;	84	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	85	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;	86	} coro_stack;
50		87
51	struct coro {	88	struct coro {
		89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		90	JMPENV start_env;
		91
52	/* the optional C context */	92	/* the optional C context */
53	coro_stack *stack;	93	coro_stack *stack;
54	void *cursp;	94	void *cursp;
55	int gencnt;	95	int gencnt;
56		96
…		…
97	};	137	};
98		138
99	typedef struct coro *Coro__State;	139	typedef struct coro *Coro__State;
100	typedef struct coro *Coro__State_or_hashref;	140	typedef struct coro *Coro__State_or_hashref;
101		141
102	static AV main_mainstack; / used to differentiate between $main and others */
103	static HV *coro_state_stash;
104	static SV *ucoro_state_sv;
105	static U32 ucoro_state_hash;
106	static HV *padlist_cache;
107	static SV coro_mortal; / will be freed after next transfer */
108
109	/* mostly copied from op.c:cv_clone2 */	142	/* mostly copied from op.c:cv_clone2 */
110	STATIC AV *	143	STATIC AV *
111	clone_padlist (AV *protopadlist)	144	clone_padlist (pTHX_ AV *protopadlist)
112	{	145	{
113	AV *av;	146	AV *av;
114	I32 ix;	147	I32 ix;
115	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	148	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
116	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	149	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
140	AvFLAGS (av) = AVf_REIFY;	173	AvFLAGS (av) = AVf_REIFY;
141		174
142	for (ix = fpad; ix > 0; ix--)	175	for (ix = fpad; ix > 0; ix--)
143	{	176	{
144	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	177	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		178
145	if (namesv && namesv != &PL_sv_undef)	179	if (namesv && namesv != &PL_sv_undef)
146	{	180	{
147	char name = SvPVX (namesv); / XXX */	181	char name = SvPVX (namesv); / XXX */
		182
148	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	183	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
149	{ /* lexical from outside? */	184	{ /* lexical from outside? */
150	npad[ix] = SvREFCNT_inc (ppad[ix]);	185	npad[ix] = SvREFCNT_inc (ppad[ix]);
151	}	186	}
152	else	187	else
…		…
158	sv = (SV *) newAV ();	193	sv = (SV *) newAV ();
159	else if (*name == '%')	194	else if (*name == '%')
160	sv = (SV *) newHV ();	195	sv = (SV *) newHV ();
161	else	196	else
162	sv = NEWSV (0, 0);	197	sv = NEWSV (0, 0);
		198
		199	#ifdef SvPADBUSY
163	if (!SvPADBUSY (sv))	200	if (!SvPADBUSY (sv))
		201	#endif
164	SvPADMY_on (sv);	202	SvPADMY_on (sv);
		203
165	npad[ix] = sv;	204	npad[ix] = sv;
166	}	205	}
167	}	206	}
168	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	207	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
169	{	208	{
…		…
198	#endif	237	#endif
199		238
200	return newpadlist;	239	return newpadlist;
201	}	240	}
202		241
203	#ifdef MAY_FLUSH
204	STATIC void	242	STATIC void
205	free_padlist (AV *padlist)	243	free_padlist (pTHX_ AV *padlist)
206	{	244	{
207	/* may be during global destruction */	245	/* may be during global destruction */
208	if (SvREFCNT(padlist))	246	if (SvREFCNT (padlist))
209	{	247	{
210	I32 i = AvFILLp(padlist);	248	I32 i = AvFILLp (padlist);
211	while (i >= 0)	249	while (i >= 0)
212	{	250	{
213	SV **svp = av_fetch(padlist, i--, FALSE);	251	SV **svp = av_fetch (padlist, i--, FALSE);
214	SV sv = svp ? svp : Nullsv;
215	if (sv)	252	if (svp)
		253	{
		254	SV *sv;
		255	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
216	SvREFCNT_dec(sv);	256	SvREFCNT_dec (sv);
		257
		258	SvREFCNT_dec (*svp);
		259	}
217	}	260	}
218		261
219	SvREFCNT_dec((SV*)padlist);	262	SvREFCNT_dec ((SV*)padlist);
220	}	263	}
221	}	264	}
222	#endif	265
		266	STATIC int
		267	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		268	{
		269	AV *padlist;
		270	AV av = (AV )mg->mg_obj;
		271
		272	/* casting is fun. */
		273	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		274	free_padlist (aTHX_ padlist);
		275	}
		276
		277	#define PERL_MAGIC_coro PERL_MAGIC_ext
		278
		279	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
223		280
224	/* the next two functions merely cache the padlists */	281	/* the next two functions merely cache the padlists */
225	STATIC void	282	STATIC void
226	get_padlist (CV *cv)	283	get_padlist (pTHX_ CV *cv)
227	{	284	{
228	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	285	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
229		286
230	if (he && AvFILLp ((AV )he) >= 0)	287	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
231	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	288	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
232	else	289	else
233	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	290	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
234	}	291	}
235		292
236	STATIC void	293	STATIC void
237	put_padlist (CV *cv)	294	put_padlist (pTHX_ CV *cv)
238	{	295	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	296	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
240		297
241	if (SvTYPE (*he) != SVt_PVAV)	298	if (!mg)
242	{	299	{
243	SvREFCNT_dec (*he);	300	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		301	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		302	mg->mg_virtual = &vtbl_coro;
244	he = (SV )newAV ();	303	mg->mg_obj = (SV *)newAV ();
245	}	304	}
246		305
247	av_push ((AV )he, (SV *)CvPADLIST (cv));	306	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
248	}	307	}
249
250	#ifdef MAY_FLUSH
251	STATIC void
252	flush_padlist_cache ()
253	{
254	HV *hv = padlist_cache;
255	padlist_cache = newHV ();
256
257	if (hv_iterinit (hv))
258	{
259	HE *he;
260	AV *padlist;
261
262	while (!!(he = hv_iternext (hv)))
263	{
264	AV av = (AV )HeVAL(he);
265
266	/* casting is fun. */
267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
268	free_padlist (padlist);
269	}
270	}
271
272	SvREFCNT_dec (hv);
273	}
274	#endif
275		308
276	#define SB do {	309	#define SB do {
277	#define SE } while (0)	310	#define SE } while (0)
278		311
279	#define LOAD(state) load_state(aTHX_ (state));	312	#define LOAD(state) load_state(aTHX_ (state));
280	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	313	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281		314
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	315	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
283		316
284	static void	317	static void
285	load_state(pTHX_ Coro__State c)	318	load_state(pTHX_ Coro__State c)
286	{	319	{
287	PL_dowarn = c->dowarn;	320	PL_dowarn = c->dowarn;
…		…
328	{	361	{
329	AV padlist = (AV )POPs;	362	AV padlist = (AV )POPs;
330		363
331	if (padlist)	364	if (padlist)
332	{	365	{
333	put_padlist (cv); /* mark this padlist as available */	366	put_padlist (aTHX_ cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	367	CvPADLIST(cv) = padlist;
335	#ifdef USE_THREADS
336	/CvOWNER(cv) = (struct perl_thread )POPs;*/
337	#endif
338	}	368	}
339		369
340	++CvDEPTH(cv);	370	++CvDEPTH(cv);
341	}	371	}
342		372
…		…
369	if (CxTYPE(cx) == CXt_SUB)	399	if (CxTYPE(cx) == CXt_SUB)
370	{	400	{
371	CV *cv = cx->blk_sub.cv;	401	CV *cv = cx->blk_sub.cv;
372	if (CvDEPTH(cv))	402	if (CvDEPTH(cv))
373	{	403	{
374	#ifdef USE_THREADS
375	/XPUSHs ((SV )CvOWNER(cv));*/
376	/CvOWNER(cv) = 0;/
377	/error must unlock this cv etc.. etc.../
378	#endif
379	EXTEND (SP, CvDEPTH(cv)*2);	404	EXTEND (SP, CvDEPTH(cv)*2);
380		405
381	while (--CvDEPTH(cv))	406	while (--CvDEPTH(cv))
382	{	407	{
383	/* this tells the restore code to increment CvDEPTH */	408	/* this tells the restore code to increment CvDEPTH */
…		…
386	}	411	}
387		412
388	PUSHs ((SV *)CvPADLIST(cv));	413	PUSHs ((SV *)CvPADLIST(cv));
389	PUSHs ((SV *)cv);	414	PUSHs ((SV *)cv);
390		415
391	get_padlist (cv); /* this is a monster */	416	get_padlist (aTHX_ cv); /* this is a monster */
392	}	417	}
393	}	418	}
		419	#ifdef CXt_FORMAT
394	else if (CxTYPE(cx) == CXt_FORMAT)	420	else if (CxTYPE(cx) == CXt_FORMAT)
395	{	421	{
396	/* I never used formats, so how should I know how these are implemented? */	422	/* I never used formats, so how should I know how these are implemented? */
397	/* my bold guess is as a simple, plain sub... */	423	/* my bold guess is as a simple, plain sub... */
398	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	424	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
399	}	425	}
		426	#endif
400	}	427	}
401		428
402	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
403	break;	430	break;
404		431
…		…
447	}	474	}
448		475
449	/*	476	/*
450	* allocate various perl stacks. This is an exact copy	477	* allocate various perl stacks. This is an exact copy
451	* of perl.c:init_stacks, except that it uses less memory	478	* of perl.c:init_stacks, except that it uses less memory
452	* on the assumption that coroutines do not usually need	479	* on the (sometimes correct) assumption that coroutines do
453	* a lot of stackspace.	480	* not usually need a lot of stackspace.
454	*/	481	*/
455	STATIC void	482	STATIC void
456	coro_init_stacks (pTHX)	483	coro_init_stacks (pTHX)
457	{	484	{
		485	LOCK;
		486
458	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	487	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
459	PL_curstackinfo->si_type = PERLSI_MAIN;	488	PL_curstackinfo->si_type = PERLSI_MAIN;
460	PL_curstack = PL_curstackinfo->si_stack;	489	PL_curstack = PL_curstackinfo->si_stack;
461	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	490	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
462		491
…		…
471		500
472	New(54,PL_markstack,16,I32);	501	New(54,PL_markstack,16,I32);
473	PL_markstack_ptr = PL_markstack;	502	PL_markstack_ptr = PL_markstack;
474	PL_markstack_max = PL_markstack + 16;	503	PL_markstack_max = PL_markstack + 16;
475		504
		505	#ifdef SET_MARK_OFFSET
476	SET_MARK_OFFSET;	506	SET_MARK_OFFSET;
		507	#endif
477		508
478	New(54,PL_scopestack,16,I32);	509	New(54,PL_scopestack,16,I32);
479	PL_scopestack_ix = 0;	510	PL_scopestack_ix = 0;
480	PL_scopestack_max = 16;	511	PL_scopestack_max = 16;
481		512
…		…
484	PL_savestack_max = 96;	515	PL_savestack_max = 96;
485		516
486	New(54,PL_retstack,8,OP*);	517	New(54,PL_retstack,8,OP*);
487	PL_retstack_ix = 0;	518	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	519	PL_retstack_max = 8;
		520
		521	UNLOCK;
489	}	522	}
490		523
491	/*	524	/*
492	* destroy the stacks, the callchain etc...	525	* destroy the stacks, the callchain etc...
493	* still there is a memleak of 128 bytes...
494	*/	526	*/
495	STATIC void	527	STATIC void
496	destroy_stacks(pTHX)	528	destroy_stacks(pTHX)
497	{	529	{
498	if (!IN_DESTRUCT)	530	if (!IN_DESTRUCT)
499	{	531	{
500	/* is this ugly, I ask? */	532	/* is this ugly, I ask? */
501	while (PL_scopestack_ix)	533	LEAVE_SCOPE (0);
502	LEAVE;
503		534
504	/* sure it is, but more important: is it correct?? :/ */	535	/* sure it is, but more important: is it correct?? :/ */
505	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
506	FREETMPS;	536	FREETMPS;
		537
		538	/POPSTACK_TO (PL_mainstack);//D//use/
507	}	539	}
508		540
509	while (PL_curstackinfo->si_next)	541	while (PL_curstackinfo->si_next)
510	PL_curstackinfo = PL_curstackinfo->si_next;	542	PL_curstackinfo = PL_curstackinfo->si_next;
511		543
512	while (PL_curstackinfo)	544	while (PL_curstackinfo)
513	{	545	{
514	PERL_SI *p = PL_curstackinfo->si_prev;	546	PERL_SI *p = PL_curstackinfo->si_prev;
515		547
516	{	548	{ /D//remove/
517	dSP;	549	dSP;
518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	550	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519	PUTBACK; /* possibly superfluous */	551	PUTBACK; /* possibly superfluous */
520	}	552	}
521		553
522	if (!IN_DESTRUCT)	554	if (!IN_DESTRUCT)
523	{	555	{
524	dounwind(-1);	556	dounwind (-1);/D//remove/
525	SvREFCNT_dec(PL_curstackinfo->si_stack);	557	SvREFCNT_dec (PL_curstackinfo->si_stack);
526	}	558	}
527		559
528	Safefree(PL_curstackinfo->si_cxstack);	560	Safefree (PL_curstackinfo->si_cxstack);
529	Safefree(PL_curstackinfo);	561	Safefree (PL_curstackinfo);
530	PL_curstackinfo = p;	562	PL_curstackinfo = p;
531	}	563	}
532		564
533	Safefree(PL_tmps_stack);	565	Safefree (PL_tmps_stack);
534	Safefree(PL_markstack);	566	Safefree (PL_markstack);
535	Safefree(PL_scopestack);	567	Safefree (PL_scopestack);
536	Safefree(PL_savestack);	568	Safefree (PL_savestack);
537	Safefree(PL_retstack);	569	Safefree (PL_retstack);
538	}	570	}
539		571
540	static void	572	static void
541	allocate_stack (Coro__State ctx, int alloc)	573	allocate_stack (Coro__State ctx, int alloc)
542	{	574	{
…		…
545	New (0, stack, 1, coro_stack);	577	New (0, stack, 1, coro_stack);
546		578
547	stack->refcnt = 1;	579	stack->refcnt = 1;
548	stack->usecnt = 1;	580	stack->usecnt = 1;
549	stack->gencnt = ctx->gencnt = 0;	581	stack->gencnt = ctx->gencnt = 0;
		582
550	if (alloc)	583	if (alloc)
551	{	584	{
552	#if HAVE_MMAP	585	#if HAVE_MMAP
553	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	586	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
554	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	587	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
555	if (stack->sptr == (void *)-1)	588	if (stack->sptr == (void *)-1)
556	#endif	589	#endif
557	{	590	{
558	/FIXME//D//* reasonable stack size! */	591	/FIXME//D//* reasonable stack size! */
559	stack->ssize = -4096 * sizeof (long);	592	stack->ssize = - (8192 * sizeof (long));
560	New (0, stack->sptr, 4096, long);	593	New (0, stack->sptr, 8192, long);
561	}	594	}
562	}	595	}
563	else	596	else
564	stack->sptr = 0;	597	stack->sptr = 0;
565		598
…		…
579	{	612	{
580	#ifdef HAVE_MMAP	613	#ifdef HAVE_MMAP
581	if (stack->ssize > 0 && stack->sptr)	614	if (stack->ssize > 0 && stack->sptr)
582	munmap (stack->sptr, stack->ssize);	615	munmap (stack->sptr, stack->ssize);
583	else	616	else
584	#else	617	#endif
585	Safefree (stack->sptr);	618	Safefree (stack->sptr);
586	#endif	619
587	Safefree (stack);	620	Safefree (stack);
588	}	621	}
589	else if (ctx->gencnt == stack->gencnt)	622	else if (ctx->gencnt == stack->gencnt)
590	--stack->usecnt;	623	--stack->usecnt;
591	}	624	}
…		…
595	setup_coro (void *arg)	628	setup_coro (void *arg)
596	{	629	{
597	/*	630	/*
598	* emulate part of the perl startup here.	631	* emulate part of the perl startup here.
599	*/	632	*/
		633	dTHX;
600	dSP;	634	dSP;
601	Coro__State ctx = (Coro__State)arg;	635	Coro__State ctx = (Coro__State)arg;
602	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	636	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
603		637
604	coro_init_stacks (aTHX);	638	coro_init_stacks (aTHX);
605	/PL_curcop = 0;/	639	/PL_curcop = 0;/
606	/PL_in_eval = PL_in_eval;/ /* inherit */	640	/PL_in_eval = PL_in_eval;/ /* inherit */
607	SvREFCNT_dec (GvAV (PL_defgv));	641	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = ctx->args;	642	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
609		643
610	SPAGAIN;	644	SPAGAIN;
611		645
612	if (ctx->stack)	646	if (ctx->stack)
613	{	647	{
…		…
653	continue_coro (void *arg)	687	continue_coro (void *arg)
654	{	688	{
655	/*	689	/*
656	* this is a _very_ stripped down perl interpreter ;)	690	* this is a _very_ stripped down perl interpreter ;)
657	*/	691	*/
		692	dTHX;
658	Coro__State ctx = (Coro__State)arg;	693	Coro__State ctx = (Coro__State)arg;
659	JMPENV coro_start_env;	694	JMPENV coro_start_env;
660		695
661	/* same as JMPENV_BOOTSTRAP */
662	Zero(&coro_start_env, 1, JMPENV);
663	coro_start_env.je_ret = -1;
664	coro_start_env.je_mustcatch = TRUE;
665	PL_top_env = &coro_start_env;	696	PL_top_env = &ctx->start_env;
666		697
667	ctx->cursp = 0;	698	ctx->cursp = 0;
668	PL_op = PL_op->op_next;	699	PL_op = PL_op->op_next;
669	CALLRUNOPS(aTHX);	700	CALLRUNOPS(aTHX);
670		701
671	abort ();	702	abort ();
672	}	703	}
673		704
674	STATIC void	705	STATIC void
675	transfer(pTHX_ struct coro prev, struct coro next, int flags)	706	transfer (pTHX_ struct coro prev, struct coro next, int flags)
676	{	707	{
677	dSTACKLEVEL;	708	dSTACKLEVEL;
678	static struct coro *xnext;
679		709
680	if (prev != next)	710	if (prev != next)
681	{	711	{
682	xnext = next;
683
684	if (next->mainstack)	712	if (next->mainstack)
685	{	713	{
		714	LOCK;
686	SAVE (prev, flags);	715	SAVE (prev, flags);
687	LOAD (next);	716	LOAD (next);
		717	UNLOCK;
688		718
689	/* mark this state as in-use */	719	/* mark this state as in-use */
690	next->mainstack = 0;	720	next->mainstack = 0;
691	next->tmps_ix = -2;	721	next->tmps_ix = -2;
692		722
…		…
711	continue_coro, (void *)next,	741	continue_coro, (void *)next,
712	next->stack->sptr, labs (next->stack->ssize));	742	next->stack->sptr, labs (next->stack->ssize));
713	}	743	}
714		744
715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	745	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		746	prev->cursp = stacklevel;
716	/* don't add any code here */	747	/* don't add any code here */
717	}	748	}
718		749	else
		750	next->cursp = stacklevel;
719	}	751	}
720	else if (next->tmps_ix == -2)	752	else if (next->tmps_ix == -2)
721	croak ("tried to transfer to running coroutine");	753	croak ("tried to transfer to running coroutine");
722	else	754	else
723	{	755	{
		756	LOCK;
724	SAVE (prev, -1); /* first get rid of the old state */	757	SAVE (prev, -1); /* first get rid of the old state */
		758	UNLOCK;
725		759
726	if (flags & TRANSFER_SAVE_CCTXT)	760	if (flags & TRANSFER_SAVE_CCTXT)
727	{	761	{
728	if (!prev->stack)	762	if (!prev->stack)
729	allocate_stack (prev, 0);	763	allocate_stack (prev, 0);
730		764
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	765	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732	{	766	{
		767	PL_top_env = &next->start_env;
		768
733	setup_coro (next);	769	setup_coro (next);
		770	next->cursp = stacklevel;
734		771
735	prev->stack->refcnt++;	772	prev->stack->refcnt++;
736	prev->stack->usecnt++;	773	prev->stack->usecnt++;
737	next->stack = prev->stack;	774	next->stack = prev->stack;
738	next->gencnt = prev->gencnt;	775	next->gencnt = prev->gencnt;
739	}	776	}
740	else	777	else
741	{	778	{
		779	assert (!next->stack);
742	allocate_stack (next, 1);	780	allocate_stack (next, 1);
743	coro_create (&(next->stack->cctx),	781	coro_create (&(next->stack->cctx),
744	setup_coro, (void *)next,	782	setup_coro, (void *)next,
745	next->stack->sptr, labs (next->stack->ssize));	783	next->stack->sptr, labs (next->stack->ssize));
746	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	784	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		785	prev->cursp = stacklevel;
747	/* don't add any code here */	786	/* don't add any code here */
748	}	787	}
749	}	788	}
750	else	789	else
		790	{
751	setup_coro (next);	791	setup_coro (next);
		792	next->cursp = stacklevel;
		793	}
752	}	794	}
753
754	/*
755	* xnext is now either prev or next, depending on wether
756	* we switched the c stack or not. that's why I use a global
757	* variable, that should become thread-specific at one point.
758	*/
759	xnext->cursp = stacklevel;
760	}	795	}
761		796
		797	LOCK;
762	if (coro_mortal)	798	if (coro_mortal)
763	{	799	{
764	SvREFCNT_dec (coro_mortal);	800	SvREFCNT_dec (coro_mortal);
765	coro_mortal = 0;	801	coro_mortal = 0;
766	}	802	}
		803	UNLOCK;
767	}	804	}
768		805
769	#define SV_CORO(sv,func) \	806	#define SV_CORO(sv,func) \
770	do { \	807	do { \
771	if (SvROK (sv)) \	808	if (SvROK (sv)) \
772	sv = SvRV (sv); \	809	sv = SvRV (sv); \
773	\	810	\
774	if (SvTYPE(sv) == SVt_PVHV) \	811	if (SvTYPE (sv) == SVt_PVHV) \
775	{ \	812	{ \
776	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \	813	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
777	\	814	\
778	if (!he) \	815	if (!he) \
779	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \	816	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
780	\	817	\
781	(sv) = SvRV (HeVAL(he)); \	818	(sv) = SvRV (HeVAL(he)); \
782	} \	819	} \
783	\	820	\
784	/* must also be changed inside Coro::Cont::yield */ \	821	/* must also be changed inside Coro::Cont::yield */ \
785	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \	822	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
786	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \	823	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
787	\	824	\
788	} while(0)	825	} while(0)
789		826
790	#define SvSTATE(sv) (struct coro *)SvIV (sv)	827	#define SvSTATE(sv) (struct coro *)SvIV (sv)
…		…
793	api_transfer(pTHX_ SV prev, SV next, int flags)	830	api_transfer(pTHX_ SV prev, SV next, int flags)
794	{	831	{
795	SV_CORO (prev, "Coro::transfer");	832	SV_CORO (prev, "Coro::transfer");
796	SV_CORO (next, "Coro::transfer");	833	SV_CORO (next, "Coro::transfer");
797		834
798	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	835	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
799	}	836	}
800		837
801	/ Coro ******************************************************************/	838	/ Coro ******************************************************************/
802		839
803	#define PRIO_MAX 3	840	#define PRIO_MAX 3
…		…
811	static GV coro_current, coro_idle;	848	static GV coro_current, coro_idle;
812	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	849	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
813	static int coro_nready;	850	static int coro_nready;
814		851
815	static void	852	static void
816	coro_enq (SV *sv)	853	coro_enq (pTHX_ SV *sv)
817	{	854	{
818	if (SvTYPE (sv) == SVt_PVHV)	855	if (SvTYPE (sv) == SVt_PVHV)
819	{	856	{
820	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);	857	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
821	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;	858	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
…		…
832		869
833	croak ("Coro::ready tried to enqueue something that is not a coroutine");	870	croak ("Coro::ready tried to enqueue something that is not a coroutine");
834	}	871	}
835		872
836	static SV *	873	static SV *
837	coro_deq (int min_prio)	874	coro_deq (pTHX_ int min_prio)
838	{	875	{
839	int prio = PRIO_MAX - PRIO_MIN;	876	int prio = PRIO_MAX - PRIO_MIN;
840		877
841	min_prio -= PRIO_MIN;	878	min_prio -= PRIO_MIN;
842	if (min_prio < 0)	879	if (min_prio < 0)
…		…
853	}	890	}
854		891
855	static void	892	static void
856	api_ready (SV *coro)	893	api_ready (SV *coro)
857	{	894	{
		895	dTHX;
		896
858	if (SvROK (coro))	897	if (SvROK (coro))
859	coro = SvRV (coro);	898	coro = SvRV (coro);
860		899
		900	LOCK;
861	coro_enq (SvREFCNT_inc (coro));	901	coro_enq (aTHX_ SvREFCNT_inc (coro));
		902	UNLOCK;
862	}	903	}
863		904
864	static void	905	static void
865	api_schedule (void)	906	api_schedule (void)
866	{	907	{
		908	dTHX;
		909
867	SV prev, next;	910	SV prev, next;
868		911
		912	LOCK;
		913
869	prev = SvRV (GvSV (coro_current));	914	prev = SvRV (GvSV (coro_current));
870	next = coro_deq (PRIO_MIN);	915	next = coro_deq (aTHX_ PRIO_MIN);
871		916
872	if (!next)	917	if (!next)
873	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	918	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
874		919
875	/* free this only after the transfer */	920	/* free this only after the transfer */
…		…
878		923
879	SvRV (GvSV (coro_current)) = next;	924	SvRV (GvSV (coro_current)) = next;
880		925
881	SV_CORO (next, "Coro::schedule");	926	SV_CORO (next, "Coro::schedule");
882		927
		928	UNLOCK;
		929
883	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	930	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
884	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	931	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
885	}	932	}
886		933
887	static void	934	static void
888	api_cede (void)	935	api_cede (void)
889	{	936	{
		937	dTHX;
		938
		939	LOCK;
890	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	940	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		941	UNLOCK;
891		942
892	api_schedule ();	943	api_schedule ();
893	}	944	}
894		945
895	MODULE = Coro::State PACKAGE = Coro::State	946	MODULE = Coro::State PACKAGE = Coro::State
896		947
897	PROTOTYPES: ENABLE	948	PROTOTYPES: ENABLE
898		949
899	BOOT:	950	BOOT:
900	{ /* {} necessary for stoopid perl-5.6.x */	951	{ /* {} necessary for stoopid perl-5.6.x */
		952	#ifdef USE_ITHREADS
		953	MUTEX_INIT (&coro_mutex);
		954	#endif
		955
901	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	956	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
902	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	957	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
903	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	958	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
904		959
905	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	960	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
906	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	961	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
907	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	962	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
908	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	963	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
909
910	if (!padlist_cache)
911	padlist_cache = newHV ();
912		964
913	main_mainstack = PL_mainstack;	965	main_mainstack = PL_mainstack;
914		966
915	coroapi.ver = CORO_API_VERSION;	967	coroapi.ver = CORO_API_VERSION;
916	coroapi.transfer = api_transfer;	968	coroapi.transfer = api_transfer;
…		…
924	Coro__State coro;	976	Coro__State coro;
925		977
926	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	978	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
927	croak ("Coro::State::_newprocess expects an arrayref");	979	croak ("Coro::State::_newprocess expects an arrayref");
928		980
929	New (0, coro, 1, struct coro);	981	Newz (0, coro, 1, struct coro);
930		982
931	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	983	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
932	coro->mainstack = 0; /* actual work is done inside transfer */	984	coro->mainstack = 0; /* actual work is done inside transfer */
933	coro->stack = 0;	985	coro->stack = 0;
		986
		987	/* same as JMPENV_BOOTSTRAP */
		988	/* we might be able to recycle start_env, but safe is safe */
		989	//Zero(&coro->start_env, 1, JMPENV);
		990	coro->start_env.je_ret = -1;
		991	coro->start_env.je_mustcatch = TRUE;
934		992
935	RETVAL = coro;	993	RETVAL = coro;
936	OUTPUT:	994	OUTPUT:
937	RETVAL	995	RETVAL
938		996
…		…
970		1028
971	coro->mainstack = 0;	1029	coro->mainstack = 0;
972	}	1030	}
973		1031
974	deallocate_stack (coro);	1032	deallocate_stack (coro);
975		1033	SvREFCNT_dec (coro->args);
976	Safefree (coro);	1034	Safefree (coro);
977
978	void
979	flush()
980	CODE:
981	#ifdef MAY_FLUSH
982	flush_padlist_cache ();
983	#endif
984		1035
985	void	1036	void
986	_exit(code)	1037	_exit(code)
987	int code	1038	int code
988	PROTOTYPE: $	1039	PROTOTYPE: $
989	CODE:	1040	CODE:
990	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
991	_exit (code);	1041	_exit (code);
992	#else
993	signal (SIGTERM, SIG_DFL);
994	raise (SIGTERM);
995	exit (code);
996	#endif
997		1042
998	MODULE = Coro::State PACKAGE = Coro::Cont	1043	MODULE = Coro::State PACKAGE = Coro::Cont
999		1044
1000	# this is slightly dirty (should expose a c-level api)	1045	# this is slightly dirty (should expose a c-level api)
1001		1046
…		…
1007	SV *sv;	1052	SV *sv;
1008	AV *defav = GvAV (PL_defgv);	1053	AV *defav = GvAV (PL_defgv);
1009	struct coro prev, next;	1054	struct coro prev, next;
1010		1055
1011	if (!returnstk)	1056	if (!returnstk)
1012	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1057	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
1013		1058
1014	/* set up @_ -- ugly */	1059	/* set up @_ -- ugly */
1015	av_clear (defav);	1060	av_clear (defav);
1016	av_fill (defav, items - 1);	1061	av_fill (defav, items - 1);
1017	while (items--)	1062	while (items--)
…		…
1060	sv_setiv(sv, (IV)&coroapi);	1105	sv_setiv(sv, (IV)&coroapi);
1061	SvREADONLY_on(sv);	1106	SvREADONLY_on(sv);
1062	}	1107	}
1063	}	1108	}
1064		1109
		1110	#if !PERL_MICRO
		1111
1065	void	1112	void
1066	ready(self)	1113	ready(self)
1067	SV * self	1114	SV * self
1068	PROTOTYPE: $	1115	PROTOTYPE: $
1069	CODE:	1116	CODE:
1070	api_ready (self);	1117	api_ready (self);
		1118
		1119	#endif
1071		1120
1072	int	1121	int
1073	nready(...)	1122	nready(...)
1074	PROTOTYPE:	1123	PROTOTYPE:
1075	CODE:	1124	CODE:

Diff Legend

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

Comparing Coro/Coro/State.xs (file contents): Revision 1.44 by root, Sat Mar 22 18:50:32 2003 UTC vs. Revision 1.58 by pcg, Fri May 14 13:25:09 2004 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.44 by root, Sat Mar 22 18:50:32 2003 UTC vs.
Revision 1.58 by pcg, Fri May 14 13:25:09 2004 UTC