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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.19 by root, Sun Jul 29 01:11:41 2001 UTC vs.
Revision 1.52 by pcg, Sun Nov 30 22:49:25 2003 UTC

…		…
1	#include "EXTERN.h"	1	#include "EXTERN.h"
2	#include "perl.h"	2	#include "perl.h"
3	#include "XSUB.h"	3	#include "XSUB.h"
4		4
		5	#include "patchlevel.h"
		6
		7	#if PATCHLEVEL < 6
		8	# ifndef PL_ppaddr
		9	# define PL_ppaddr ppaddr
		10	# endif
		11	# ifndef call_sv
		12	# define call_sv perl_call_sv
		13	# endif
		14	# ifndef get_sv
		15	# define get_sv perl_get_sv
		16	# endif
		17	# ifndef get_cv
		18	# define get_cv perl_get_cv
		19	# endif
		20	# ifndef IS_PADGV
		21	# define IS_PADGV(v) 0
		22	# endif
		23	# ifndef IS_PADCONST
		24	# define IS_PADCONST(v) 0
		25	# endif
		26	#endif
		27
5	#include "libcoro/coro.c"	28	#include "libcoro/coro.c"
		29
		30	#include <signal.h>
6		31
7	#ifdef HAVE_MMAP	32	#ifdef HAVE_MMAP
8	# include <unistd.h>	33	# include <unistd.h>
9	# include <sys/mman.h>	34	# include <sys/mman.h>
10	# ifndef MAP_ANON
11	# ifdef MAP_ANONYMOUS	35	# ifndef MAP_ANONYMOUS
12	# define MAP_ANON MAP_ANONYMOUS	36	# ifdef MAP_ANON
		37	# define MAP_ANONYMOUS MAP_ANON
13	# else	38	# else
14	# undef HAVE_MMAP	39	# undef HAVE_MMAP
15	# endif	40	# endif
16	# endif	41	# endif
17	#endif	42	#endif
18		43
19	#define MAY_FLUSH /* increases codesize */
20
21	/* perl-related */
22	#define TRANSFER_SAVE_DEFAV 0x00000001
23	#define TRANSFER_SAVE_DEFSV 0x00000002
24	#define TRANSFER_SAVE_ERRSV 0x00000004
25	/* c-related */
26	#define TRANSFER_SAVE_CCTXT 0x00000008
27	#ifdef CORO_LAZY_STACK
28	# define TRANSFER_LAZY_STACK 0x00000010
29	#else
30	# define TRANSFER_LAZY_STACK 0x00000000
31	#endif
32
33	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
34	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
35
36	#define SUB_INIT "Coro::State::initialize"	44	#define SUB_INIT "Coro::State::initialize"
37	#define UCORO_STATE "_coro_state"	45	#define UCORO_STATE "_coro_state"
38		46
39	/* The next macro should delcare a variable stacklevel that contains and approximation	47	/* The next macro should declare a variable stacklevel that contains and approximation
40	* to the current C stack pointer. It's property is that it changes with each call	48	* to the current C stack pointer. Its property is that it changes with each call
41	* and should be unique. */	49	* and should be unique. */
42	#define dSTACKLEVEL void *stacklevel = &stacklevel	50	#define dSTACKLEVEL void *stacklevel = &stacklevel
43		51
		52	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		53
44	#define labs(l) ((l) >= 0 ? (l) : -(l))	54	#define labs(l) ((l) >= 0 ? (l) : -(l))
		55
		56	#include "CoroAPI.h"
		57
		58	static struct CoroAPI coroapi;
45		59
46	/* this is actually not only the c stack but also c registers etc... */	60	/* this is actually not only the c stack but also c registers etc... */
47	typedef struct {	61	typedef struct {
48	int refcnt; /* pointer reference counter */	62	int refcnt; /* pointer reference counter */
49	int usecnt; /* shared by how many coroutines */	63	int usecnt; /* shared by how many coroutines */
54	void *sptr;	68	void *sptr;
55	long ssize; /* positive == mmap, otherwise malloc */	69	long ssize; /* positive == mmap, otherwise malloc */
56	} coro_stack;	70	} coro_stack;
57		71
58	struct coro {	72	struct coro {
		73	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		74	JMPENV start_env;
		75
59	/* the optional C context */	76	/* the optional C context */
60	coro_stack *stack;	77	coro_stack *stack;
61	void *cursp;	78	void *cursp;
62	int gencnt;	79	int gencnt;
63		80
…		…
75	AV *curstack;	92	AV *curstack;
76	AV *mainstack;	93	AV *mainstack;
77	SV **stack_sp;	94	SV **stack_sp;
78	OP *op;	95	OP *op;
79	SV **curpad;	96	SV **curpad;
		97	AV *comppad;
80	SV **stack_base;	98	SV **stack_base;
81	SV **stack_max;	99	SV **stack_max;
82	SV **tmps_stack;	100	SV **tmps_stack;
83	I32 tmps_floor;	101	I32 tmps_floor;
84	I32 tmps_ix;	102	I32 tmps_ix;
…		…
108	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
109	static HV *coro_state_stash;	127	static HV *coro_state_stash;
110	static SV *ucoro_state_sv;	128	static SV *ucoro_state_sv;
111	static U32 ucoro_state_hash;	129	static U32 ucoro_state_hash;
112	static HV *padlist_cache;	130	static HV *padlist_cache;
		131	static SV coro_mortal; / will be freed after next transfer */
113		132
114	/* mostly copied from op.c:cv_clone2 */	133	/* mostly copied from op.c:cv_clone2 */
115	STATIC AV *	134	STATIC AV *
116	clone_padlist (AV *protopadlist)	135	clone_padlist (AV *protopadlist)
117	{	136	{
…		…
163	sv = (SV *) newAV ();	182	sv = (SV *) newAV ();
164	else if (*name == '%')	183	else if (*name == '%')
165	sv = (SV *) newHV ();	184	sv = (SV *) newHV ();
166	else	185	else
167	sv = NEWSV (0, 0);	186	sv = NEWSV (0, 0);
		187	#ifdef SvPADBUSY
168	if (!SvPADBUSY (sv))	188	if (!SvPADBUSY (sv))
		189	#endif
169	SvPADMY_on (sv);	190	SvPADMY_on (sv);
170	npad[ix] = sv;	191	npad[ix] = sv;
171	}	192	}
172	}	193	}
173	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	194	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
…		…
203	#endif	224	#endif
204		225
205	return newpadlist;	226	return newpadlist;
206	}	227	}
207		228
208	#ifdef MAY_FLUSH	229	STATIC void
209	STATIC AV *
210	free_padlist (AV *padlist)	230	free_padlist (AV *padlist)
211	{	231	{
212	/* may be during global destruction */	232	/* may be during global destruction */
213	if (SvREFCNT(padlist))	233	if (SvREFCNT (padlist))
214	{	234	{
215	I32 i = AvFILLp(padlist);	235	I32 i = AvFILLp (padlist);
216	while (i >= 0)	236	while (i >= 0)
217	{	237	{
218	SV **svp = av_fetch(padlist, i--, FALSE);	238	SV **svp = av_fetch (padlist, i--, FALSE);
219	SV sv = svp ? svp : Nullsv;
220	if (sv)	239	if (svp)
		240	{
		241	SV *sv;
		242	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
221	SvREFCNT_dec(sv);	243	SvREFCNT_dec (sv);
		244
		245	SvREFCNT_dec (*svp);
		246	}
222	}	247	}
223		248
224	SvREFCNT_dec((SV*)padlist);	249	SvREFCNT_dec ((SV*)padlist);
225	}	250	}
226	}	251	}
227	#endif	252
		253	STATIC int
		254	coro_cv_free (SV sv, MAGIC mg)
		255	{
		256	AV *padlist;
		257	AV av = (AV )mg->mg_obj;
		258
		259	/* casting is fun. */
		260	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		261	free_padlist (padlist);
		262	}
		263
		264	#define PERL_MAGIC_coro PERL_MAGIC_ext
		265
		266	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
228		267
229	/* the next two functions merely cache the padlists */	268	/* the next two functions merely cache the padlists */
230	STATIC void	269	STATIC void
231	get_padlist (CV *cv)	270	get_padlist (CV *cv)
232	{	271	{
233	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	272	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
234		273
235	if (he && AvFILLp ((AV )he) >= 0)	274	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
236	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	275	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
237	else	276	else
238	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	277	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
239	}	278	}
240		279
241	STATIC void	280	STATIC void
242	put_padlist (CV *cv)	281	put_padlist (CV *cv)
243	{	282	{
244	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	283	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
245		284
246	if (SvTYPE (*he) != SVt_PVAV)	285	if (!mg)
247	{	286	{
248	SvREFCNT_dec (*he);	287	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		288	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		289	mg->mg_virtual = &vtbl_coro;
249	he = (SV )newAV ();	290	mg->mg_obj = (SV *)newAV ();
250	}	291	}
251		292
252	av_push ((AV )he, (SV *)CvPADLIST (cv));	293	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
253	}	294	}
254
255	#ifdef MAY_FLUSH
256	STATIC void
257	flush_padlist_cache ()
258	{
259	HV *hv = padlist_cache;
260	padlist_cache = newHV ();
261
262	if (hv_iterinit (hv))
263	{
264	HE *he;
265	AV *padlist;
266
267	while (!!(he = hv_iternext (hv)))
268	{
269	AV av = (AV )HeVAL(he);
270
271	/* casting is fun. */
272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
273	free_padlist (padlist);
274	}
275	}
276
277	SvREFCNT_dec (hv);
278	}
279	#endif
280		295
281	#define SB do {	296	#define SB do {
282	#define SE } while (0)	297	#define SE } while (0)
283		298
284	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	299	#define LOAD(state) load_state(aTHX_ (state));
285	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	300	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
286		301
287	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	302	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
288		303
289	static void	304	static void
290	load_state(pTHX_ Coro__State c)	305	load_state(pTHX_ Coro__State c)
291	{	306	{
292	PL_dowarn = c->dowarn;	307	PL_dowarn = c->dowarn;
…		…
296	PL_curstack = c->curstack;	311	PL_curstack = c->curstack;
297	PL_mainstack = c->mainstack;	312	PL_mainstack = c->mainstack;
298	PL_stack_sp = c->stack_sp;	313	PL_stack_sp = c->stack_sp;
299	PL_op = c->op;	314	PL_op = c->op;
300	PL_curpad = c->curpad;	315	PL_curpad = c->curpad;
		316	PL_comppad = c->comppad;
301	PL_stack_base = c->stack_base;	317	PL_stack_base = c->stack_base;
302	PL_stack_max = c->stack_max;	318	PL_stack_max = c->stack_max;
303	PL_tmps_stack = c->tmps_stack;	319	PL_tmps_stack = c->tmps_stack;
304	PL_tmps_floor = c->tmps_floor;	320	PL_tmps_floor = c->tmps_floor;
305	PL_tmps_ix = c->tmps_ix;	321	PL_tmps_ix = c->tmps_ix;
…		…
364		380
365	PUSHs (Nullsv);	381	PUSHs (Nullsv);
366	/* this loop was inspired by pp_caller */	382	/* this loop was inspired by pp_caller */
367	for (;;)	383	for (;;)
368	{	384	{
369	do	385	while (cxix >= 0)
370	{	386	{
371	PERL_CONTEXT *cx = &ccstk[cxix--];	387	PERL_CONTEXT *cx = &ccstk[cxix--];
372		388
373	if (CxTYPE(cx) == CXt_SUB)	389	if (CxTYPE(cx) == CXt_SUB)
374	{	390	{
…		…
393	PUSHs ((SV *)cv);	409	PUSHs ((SV *)cv);
394		410
395	get_padlist (cv); /* this is a monster */	411	get_padlist (cv); /* this is a monster */
396	}	412	}
397	}	413	}
		414	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)	415	else if (CxTYPE(cx) == CXt_FORMAT)
399	{	416	{
400	/* I never used formats, so how should I know how these are implemented? */	417	/* I never used formats, so how should I know how these are implemented? */
401	/* my bold guess is as a simple, plain sub... */	418	/* my bold guess is as a simple, plain sub... */
402	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	419	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
403	}	420	}
		421	#endif
404	}	422	}
405	while (cxix >= 0);
406		423
407	if (top_si->si_type == PERLSI_MAIN)	424	if (top_si->si_type == PERLSI_MAIN)
408	break;	425	break;
409		426
410	top_si = top_si->si_prev;	427	top_si = top_si->si_prev;
…		…
416	}	433	}
417		434
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	435	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	436	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	437	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
421
422	/* I have not the slightest idea of why av_reify is necessary */
423	/* but if it's missing the defav contents magically get replaced sometimes */
424	if (c->defav)
425	av_reify (c->defav);
426		438
427	c->dowarn = PL_dowarn;	439	c->dowarn = PL_dowarn;
428	c->in_eval = PL_in_eval;	440	c->in_eval = PL_in_eval;
429		441
430	c->curstackinfo = PL_curstackinfo;	442	c->curstackinfo = PL_curstackinfo;
431	c->curstack = PL_curstack;	443	c->curstack = PL_curstack;
432	c->mainstack = PL_mainstack;	444	c->mainstack = PL_mainstack;
433	c->stack_sp = PL_stack_sp;	445	c->stack_sp = PL_stack_sp;
434	c->op = PL_op;	446	c->op = PL_op;
435	c->curpad = PL_curpad;	447	c->curpad = PL_curpad;
		448	c->comppad = PL_comppad;
436	c->stack_base = PL_stack_base;	449	c->stack_base = PL_stack_base;
437	c->stack_max = PL_stack_max;	450	c->stack_max = PL_stack_max;
438	c->tmps_stack = PL_tmps_stack;	451	c->tmps_stack = PL_tmps_stack;
439	c->tmps_floor = PL_tmps_floor;	452	c->tmps_floor = PL_tmps_floor;
440	c->tmps_ix = PL_tmps_ix;	453	c->tmps_ix = PL_tmps_ix;
…		…
456	}	469	}
457		470
458	/*	471	/*
459	* allocate various perl stacks. This is an exact copy	472	* allocate various perl stacks. This is an exact copy
460	* of perl.c:init_stacks, except that it uses less memory	473	* of perl.c:init_stacks, except that it uses less memory
461	* on the assumption that coroutines do not usually need	474	* on the (sometimes correct) assumption that coroutines do
462	* a lot of stackspace.	475	* not usually need a lot of stackspace.
463	*/	476	*/
464	STATIC void	477	STATIC void
465	coro_init_stacks (pTHX)	478	coro_init_stacks (pTHX)
466	{	479	{
467	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	480	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
…		…
480		493
481	New(54,PL_markstack,16,I32);	494	New(54,PL_markstack,16,I32);
482	PL_markstack_ptr = PL_markstack;	495	PL_markstack_ptr = PL_markstack;
483	PL_markstack_max = PL_markstack + 16;	496	PL_markstack_max = PL_markstack + 16;
484		497
		498	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	499	SET_MARK_OFFSET;
		500	#endif
486		501
487	New(54,PL_scopestack,16,I32);	502	New(54,PL_scopestack,16,I32);
488	PL_scopestack_ix = 0;	503	PL_scopestack_ix = 0;
489	PL_scopestack_max = 16;	504	PL_scopestack_max = 16;
490		505
…		…
497	PL_retstack_max = 8;	512	PL_retstack_max = 8;
498	}	513	}
499		514
500	/*	515	/*
501	* destroy the stacks, the callchain etc...	516	* destroy the stacks, the callchain etc...
502	* still there is a memleak of 128 bytes...
503	*/	517	*/
504	STATIC void	518	STATIC void
505	destroy_stacks(pTHX)	519	destroy_stacks(pTHX)
506	{	520	{
		521	if (!IN_DESTRUCT)
		522	{
507	/* is this ugly, I ask? */	523	/* is this ugly, I ask? */
508	while (PL_scopestack_ix)	524	LEAVE_SCOPE (0);
509	LEAVE;
510		525
511	/* sure it is, but more important: is it correct?? :/ */	526	/* sure it is, but more important: is it correct?? :/ */
512	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
513	FREETMPS;	527	FREETMPS;
		528	}
514		529
515	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
516	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
517		532
518	while (PL_curstackinfo)	533	while (PL_curstackinfo)
…		…
523	dSP;	538	dSP;
524	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	539	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
525	PUTBACK; /* possibly superfluous */	540	PUTBACK; /* possibly superfluous */
526	}	541	}
527		542
		543	if (!IN_DESTRUCT)
		544	{
528	dounwind(-1);	545	dounwind(-1);
529
530	SvREFCNT_dec(PL_curstackinfo->si_stack);	546	SvREFCNT_dec(PL_curstackinfo->si_stack);
		547	}
		548
531	Safefree(PL_curstackinfo->si_cxstack);	549	Safefree(PL_curstackinfo->si_cxstack);
532	Safefree(PL_curstackinfo);	550	Safefree(PL_curstackinfo);
533	PL_curstackinfo = p;	551	PL_curstackinfo = p;
534	}	552	}
535		553
…		…
550	stack->refcnt = 1;	568	stack->refcnt = 1;
551	stack->usecnt = 1;	569	stack->usecnt = 1;
552	stack->gencnt = ctx->gencnt = 0;	570	stack->gencnt = ctx->gencnt = 0;
553	if (alloc)	571	if (alloc)
554	{	572	{
555	#ifdef HAVE_MMAP	573	#if HAVE_MMAP
556	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	574	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
557	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	575	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
558	if (stack->sptr == (void *)-1)	576	if (stack->sptr == (void *)-1)
559	#endif	577	#endif
560	{	578	{
561	/FIXME//D//* reasonable stack size! */	579	/FIXME//D//* reasonable stack size! */
562	stack->ssize = -4096 * sizeof (long);	580	stack->ssize = - (16384 * sizeof (long));
563	New (0, stack->sptr, 4096, long);	581	New (0, stack->sptr, 16384, long);
564	}	582	}
565	}	583	}
566	else	584	else
567	stack->sptr = 0;	585	stack->sptr = 0;
568		586
…		…
582	{	600	{
583	#ifdef HAVE_MMAP	601	#ifdef HAVE_MMAP
584	if (stack->ssize > 0 && stack->sptr)	602	if (stack->ssize > 0 && stack->sptr)
585	munmap (stack->sptr, stack->ssize);	603	munmap (stack->sptr, stack->ssize);
586	else	604	else
587	#else	605	#endif
588	Safefree (stack->sptr);	606	Safefree (stack->sptr);
589	#endif	607
590	Safefree (stack);	608	Safefree (stack);
591	}	609	}
592	else if (ctx->gencnt == stack->gencnt)	610	else if (ctx->gencnt == stack->gencnt)
593	--stack->usecnt;	611	--stack->usecnt;
594	}	612	}
…		…
600	/*	618	/*
601	* emulate part of the perl startup here.	619	* emulate part of the perl startup here.
602	*/	620	*/
603	dSP;	621	dSP;
604	Coro__State ctx = (Coro__State)arg;	622	Coro__State ctx = (Coro__State)arg;
605	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	623	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
606		624
607	coro_init_stacks (aTHX);	625	coro_init_stacks (aTHX);
608	/PL_curcop = 0;/	626	/PL_curcop = 0;/
609	/PL_in_eval = PL_in_eval;/ /* inherit */	627	/PL_in_eval = PL_in_eval;/ /* inherit */
610	SvREFCNT_dec (GvAV (PL_defgv));	628	SvREFCNT_dec (GvAV (PL_defgv));
611	GvAV (PL_defgv) = ctx->args;	629	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
612		630
613	SPAGAIN;	631	SPAGAIN;
614		632
615	if (ctx->stack)	633	if (ctx->stack)
616	{	634	{
…		…
643	* that doesn't matter, though, since it is only	661	* that doesn't matter, though, since it is only
644	* pp_nextstate and we never return...	662	* pp_nextstate and we never return...
645	* ah yes, and I don't care anyways ;)	663	* ah yes, and I don't care anyways ;)
646	*/	664	*/
647	PUTBACK;	665	PUTBACK;
648	PL_op = pp_entersub();	666	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
649	SPAGAIN;	667	SPAGAIN;
650		668
651	ENTER; /* necessary e.g. for dounwind */	669	ENTER; /* necessary e.g. for dounwind */
652	}	670	}
653	}	671	}
…		…
657	{	675	{
658	/*	676	/*
659	* this is a _very_ stripped down perl interpreter ;)	677	* this is a _very_ stripped down perl interpreter ;)
660	*/	678	*/
661	Coro__State ctx = (Coro__State)arg;	679	Coro__State ctx = (Coro__State)arg;
		680	JMPENV coro_start_env;
662		681
663	/FIXME//* must set up top_env here */	682	PL_top_env = &ctx->start_env;
		683
664	ctx->cursp = 0;	684	ctx->cursp = 0;
665	PL_op = PL_op->op_next;	685	PL_op = PL_op->op_next;
666	CALLRUNOPS(aTHX);	686	CALLRUNOPS(aTHX);
667		687
668	abort ();	688	abort ();
669	}	689	}
670		690
671	STATIC void	691	STATIC void
672	transfer(pTHX_ struct coro prev, struct coro next, int flags)	692	transfer(pTHX_ struct coro prev, struct coro next, int flags)
673	{	693	{
674	dSP;
675	dSTACKLEVEL;	694	dSTACKLEVEL;
		695	static struct coro *xnext;
676		696
677	if (prev != next)	697	if (prev != next)
678	{	698	{
		699	xnext = next;
		700
679	if (next->mainstack)	701	if (next->mainstack)
680	{	702	{
681	SAVE (prev, flags);	703	SAVE (prev, flags);
682	LOAD (next);	704	LOAD (next);
683		705
…		…
706	continue_coro, (void *)next,	728	continue_coro, (void *)next,
707	next->stack->sptr, labs (next->stack->ssize));	729	next->stack->sptr, labs (next->stack->ssize));
708	}	730	}
709		731
710	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	732	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		733	/* don't add any code here */
711	}	734	}
712		735
713	}	736	}
714	else if (next->tmps_ix == -2)	737	else if (next->tmps_ix == -2)
715	croak ("tried to transfer to running coroutine");	738	croak ("tried to transfer to running coroutine");
…		…
722	if (!prev->stack)	745	if (!prev->stack)
723	allocate_stack (prev, 0);	746	allocate_stack (prev, 0);
724		747
725	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	748	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
726	{	749	{
		750	PL_top_env = &next->start_env;
		751
727	setup_coro (next);	752	setup_coro (next);
728		753
729	prev->stack->refcnt++;	754	prev->stack->refcnt++;
730	prev->stack->usecnt++;	755	prev->stack->usecnt++;
731	next->stack = prev->stack;	756	next->stack = prev->stack;
732	next->gencnt = prev->gencnt;	757	next->gencnt = prev->gencnt;
733	}	758	}
734	else	759	else
735	{	760	{
		761	assert (!next->stack);
736	allocate_stack (next, 1);	762	allocate_stack (next, 1);
737	coro_create (&(next->stack->cctx),	763	coro_create (&(next->stack->cctx),
738	setup_coro, (void *)next,	764	setup_coro, (void *)next,
739	next->stack->sptr, labs (next->stack->ssize));	765	next->stack->sptr, labs (next->stack->ssize));
740	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	766	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		767	/* don't add any code here */
741	}	768	}
742	}	769	}
743	else	770	else
744	setup_coro (next);	771	setup_coro (next);
745	}	772	}
		773
		774	/*
		775	* xnext is now either prev or next, depending on wether
		776	* we switched the c stack or not. that's why I use a global
		777	* variable, that should become thread-specific at one point.
		778	*/
		779	xnext->cursp = stacklevel;
746	}	780	}
747		781
748	next->cursp = stacklevel;	782	if (coro_mortal)
		783	{
		784	SvREFCNT_dec (coro_mortal);
		785	coro_mortal = 0;
		786	}
		787	}
		788
		789	#define SV_CORO(sv,func) \
		790	do { \
		791	if (SvROK (sv)) \
		792	sv = SvRV (sv); \
		793	\
		794	if (SvTYPE(sv) == SVt_PVHV) \
		795	{ \
		796	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		797	\
		798	if (!he) \
		799	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		800	\
		801	(sv) = SvRV (HeVAL(he)); \
		802	} \
		803	\
		804	/* must also be changed inside Coro::Cont::yield */ \
		805	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
		806	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		807	\
		808	} while(0)
		809
		810	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		811
		812	static void
		813	api_transfer(pTHX_ SV prev, SV next, int flags)
		814	{
		815	SV_CORO (prev, "Coro::transfer");
		816	SV_CORO (next, "Coro::transfer");
		817
		818	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
		819	}
		820
		821	/ Coro ******************************************************************/
		822
		823	#define PRIO_MAX 3
		824	#define PRIO_HIGH 1
		825	#define PRIO_NORMAL 0
		826	#define PRIO_LOW -1
		827	#define PRIO_IDLE -3
		828	#define PRIO_MIN -4
		829
		830	/* for Coro.pm */
		831	static GV coro_current, coro_idle;
		832	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		833	static int coro_nready;
		834
		835	static void
		836	coro_enq (SV *sv)
		837	{
		838	if (SvTYPE (sv) == SVt_PVHV)
		839	{
		840	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		841	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		842
		843	prio = prio > PRIO_MAX ? PRIO_MAX
		844	: prio < PRIO_MIN ? PRIO_MIN
		845	: prio;
		846
		847	av_push (coro_ready [prio - PRIO_MIN], sv);
		848	coro_nready++;
		849
		850	return;
		851	}
		852
		853	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		854	}
		855
		856	static SV *
		857	coro_deq (int min_prio)
		858	{
		859	int prio = PRIO_MAX - PRIO_MIN;
		860
		861	min_prio -= PRIO_MIN;
		862	if (min_prio < 0)
		863	min_prio = 0;
		864
		865	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		866	if (av_len (coro_ready[prio]) >= 0)
		867	{
		868	coro_nready--;
		869	return av_shift (coro_ready[prio]);
		870	}
		871
		872	return 0;
		873	}
		874
		875	static void
		876	api_ready (SV *coro)
		877	{
		878	if (SvROK (coro))
		879	coro = SvRV (coro);
		880
		881	coro_enq (SvREFCNT_inc (coro));
		882	}
		883
		884	static void
		885	api_schedule (void)
		886	{
		887	SV prev, next;
		888
		889	prev = SvRV (GvSV (coro_current));
		890	next = coro_deq (PRIO_MIN);
		891
		892	if (!next)
		893	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		894
		895	/* free this only after the transfer */
		896	coro_mortal = prev;
		897	SV_CORO (prev, "Coro::schedule");
		898
		899	SvRV (GvSV (coro_current)) = next;
		900
		901	SV_CORO (next, "Coro::schedule");
		902
		903	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		904	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		905	}
		906
		907	static void
		908	api_cede (void)
		909	{
		910	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		911
		912	api_schedule ();
749	}	913	}
750		914
751	MODULE = Coro::State PACKAGE = Coro::State	915	MODULE = Coro::State PACKAGE = Coro::State
752		916
753	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
…		…
765		929
766	if (!padlist_cache)	930	if (!padlist_cache)
767	padlist_cache = newHV ();	931	padlist_cache = newHV ();
768		932
769	main_mainstack = PL_mainstack;	933	main_mainstack = PL_mainstack;
		934
		935	coroapi.ver = CORO_API_VERSION;
		936	coroapi.transfer = api_transfer;
770	}	937	}
771		938
772	Coro::State	939	Coro::State
773	_newprocess(args)	940	_newprocess(args)
774	SV * args	941	SV * args
…		…
777	Coro__State coro;	944	Coro__State coro;
778		945
779	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	946	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
780	croak ("Coro::State::_newprocess expects an arrayref");	947	croak ("Coro::State::_newprocess expects an arrayref");
781		948
782	New (0, coro, 1, struct coro);	949	Newz (0, coro, 1, struct coro);
783		950
784	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	951	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
785	coro->mainstack = 0; /* actual work is done inside transfer */	952	coro->mainstack = 0; /* actual work is done inside transfer */
786	coro->stack = 0;	953	coro->stack = 0;
787		954
		955	/* same as JMPENV_BOOTSTRAP */
		956	/* we might be able to recycle start_env, but safe is safe */
		957	//Zero(&coro->start_env, 1, JMPENV);
		958	coro->start_env.je_ret = -1;
		959	coro->start_env.je_mustcatch = TRUE;
		960
788	RETVAL = coro;	961	RETVAL = coro;
789	OUTPUT:	962	OUTPUT:
790	RETVAL	963	RETVAL
791		964
792	void	965	void
793	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	966	transfer(prev, next, flags)
794	Coro::State_or_hashref prev	967	SV *prev
795	Coro::State_or_hashref next	968	SV *next
796	int flags	969	int flags
797	PROTOTYPE: @	970	PROTOTYPE: @
798	CODE:	971	CODE:
		972	PUTBACK;
		973	SV_CORO (next, "Coro::transfer");
		974	SV_CORO (prev, "Coro::transfer");
799	transfer (aTHX_ prev, next, flags);	975	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		976	SPAGAIN;
800		977
801	void	978	void
802	DESTROY(coro)	979	DESTROY(coro)
803	Coro::State coro	980	Coro::State coro
804	CODE:	981	CODE:
805		982
806	if (coro->mainstack && coro->mainstack != main_mainstack)	983	if (coro->mainstack && coro->mainstack != main_mainstack)
807	{	984	{
808	struct coro temp;	985	struct coro temp;
809		986
		987	PUTBACK;
810	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	988	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
811	LOAD(aTHX_ coro);	989	LOAD(aTHX_ coro);
		990	SPAGAIN;
812		991
813	destroy_stacks (aTHX);	992	destroy_stacks (aTHX);
814		993
815	LOAD((&temp)); /* this will get rid of defsv etc.. */	994	LOAD((&temp)); /* this will get rid of defsv etc.. */
		995	SPAGAIN;
816		996
817	coro->mainstack = 0;	997	coro->mainstack = 0;
818	}	998	}
819		999
820	deallocate_stack (coro);	1000	deallocate_stack (coro);
821		1001	SvREFCNT_dec (coro->args);
822	Safefree (coro);	1002	Safefree (coro);
823		1003
824	void	1004	void
825	flush()	1005	_exit(code)
		1006	int code
		1007	PROTOTYPE: $
826	CODE:	1008	CODE:
827	#ifdef MAY_FLUSH	1009	_exit (code);
828	flush_padlist_cache ();
829	#endif
830		1010
831	MODULE = Coro::State PACKAGE = Coro::Cont	1011	MODULE = Coro::State PACKAGE = Coro::Cont
832		1012
833	# this is slightly dirty	1013	# this is slightly dirty (should expose a c-level api)
834		1014
835	void	1015	void
836	yield(...)	1016	yield(...)
837	PROTOTYPE: @	1017	PROTOTYPE: @
838	CODE:	1018	CODE:
…		…
840	SV *sv;	1020	SV *sv;
841	AV *defav = GvAV (PL_defgv);	1021	AV *defav = GvAV (PL_defgv);
842	struct coro prev, next;	1022	struct coro prev, next;
843		1023
844	if (!returnstk)	1024	if (!returnstk)
845	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1025	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
846		1026
847	/* set up @_ -- ugly */	1027	/* set up @_ -- ugly */
848	av_clear (defav);	1028	av_clear (defav);
849	av_fill (defav, items - 1);	1029	av_fill (defav, items - 1);
850	while (items--)	1030	while (items--)
…		…
856	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1036	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
857	SvREFCNT_dec (sv);	1037	SvREFCNT_dec (sv);
858		1038
859	transfer(aTHX_ prev, next, 0);	1039	transfer(aTHX_ prev, next, 0);
860		1040
		1041	MODULE = Coro::State PACKAGE = Coro
		1042
		1043	# this is slightly dirty (should expose a c-level api)
		1044
		1045	BOOT:
		1046	{
		1047	int i;
		1048	HV *stash = gv_stashpv ("Coro", TRUE);
		1049
		1050	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1051	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1052	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1053	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1054	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1055	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1056
		1057	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1058	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1059
		1060	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1061	coro_ready[i] = newAV ();
		1062
		1063	{
		1064	SV *sv = perl_get_sv("Coro::API", 1);
		1065
		1066	coroapi.schedule = api_schedule;
		1067	coroapi.cede = api_cede;
		1068	coroapi.ready = api_ready;
		1069	coroapi.nready = &coro_nready;
		1070	coroapi.current = coro_current;
		1071
		1072	GCoroAPI = &coroapi;
		1073	sv_setiv(sv, (IV)&coroapi);
		1074	SvREADONLY_on(sv);
		1075	}
		1076	}
		1077
		1078	#if !PERL_MICRO
		1079
		1080	void
		1081	ready(self)
		1082	SV * self
		1083	PROTOTYPE: $
		1084	CODE:
		1085	api_ready (self);
		1086
		1087	#endif
		1088
		1089	int
		1090	nready(...)
		1091	PROTOTYPE:
		1092	CODE:
		1093	RETVAL = coro_nready;
		1094	OUTPUT:
		1095	RETVAL
		1096
		1097	void
		1098	schedule(...)
		1099	PROTOTYPE:
		1100	CODE:
		1101	api_schedule ();
		1102
		1103	void
		1104	cede(...)
		1105	PROTOTYPE:
		1106	CODE:
		1107	api_cede ();
		1108

Diff Legend

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

Comparing Coro/Coro/State.xs (file contents): Revision 1.19 by root, Sun Jul 29 01:11:41 2001 UTC vs. Revision 1.52 by pcg, Sun Nov 30 22:49:25 2003 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.19 by root, Sun Jul 29 01:11:41 2001 UTC vs.
Revision 1.52 by pcg, Sun Nov 30 22:49:25 2003 UTC