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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.50 by pcg, Sun Nov 30 16:59:15 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>
		35	# ifndef MAP_ANONYMOUS
		36	# ifdef MAP_ANON
		37	# define MAP_ANONYMOUS MAP_ANON
		38	# else
		39	# undef HAVE_MMAP
		40	# endif
		41	# endif
10	#endif	42	#endif
11
12	#define MAY_FLUSH /* increases codesize */
13
14	/* perl-related */
15	#define TRANSFER_SAVE_DEFAV 0x00000001
16	#define TRANSFER_SAVE_DEFSV 0x00000002
17	#define TRANSFER_SAVE_ERRSV 0x00000004
18	/* c-related */
19	#define TRANSFER_SAVE_CCTXT 0x00000008
20	#ifdef CORO_LAZY_STACK
21	# define TRANSFER_LAZY_STACK 0x00000010
22	#else
23	# define TRANSFER_LAZY_STACK 0x00000000
24	#endif
25
26	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
27	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
28		43
29	#define SUB_INIT "Coro::State::initialize"	44	#define SUB_INIT "Coro::State::initialize"
30	#define UCORO_STATE "_coro_state"	45	#define UCORO_STATE "_coro_state"
31		46
32	/* 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
33	* 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
34	* and should be unique. */	49	* and should be unique. */
35	#define dSTACKLEVEL void *stacklevel = &stacklevel	50	#define dSTACKLEVEL void *stacklevel = &stacklevel
36		51
		52	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		53
37	#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;
38		59
39	/* 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... */
40	typedef struct {	61	typedef struct {
41	int refcnt; /* pointer reference counter */	62	int refcnt; /* pointer reference counter */
42	int usecnt; /* shared by how many coroutines */	63	int usecnt; /* shared by how many coroutines */
46		67
47	void *sptr;	68	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	69	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;	70	} coro_stack;
50		71
51	static coro_stack main_stack = { 1, 0, 0 };
52
53	struct coro {	72	struct coro {
		73	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		74	JMPENV start_env;
		75
54	/* the optional C context */	76	/* the optional C context */
55	coro_stack *stack;	77	coro_stack *stack;
56	void *cursp;	78	void *cursp;
57	int gencnt;	79	int gencnt;
58		80
…		…
61	SV *defsv;	83	SV *defsv;
62	SV *errsv;	84	SV *errsv;
63		85
64	/* saved global state not related to stacks */	86	/* saved global state not related to stacks */
65	U8 dowarn;	87	U8 dowarn;
		88	I32 in_eval;
66		89
67	/* the stacks and related info (callchain etc..) */	90	/* the stacks and related info (callchain etc..) */
68	PERL_SI *curstackinfo;	91	PERL_SI *curstackinfo;
69	AV *curstack;	92	AV *curstack;
70	AV *mainstack;	93	AV *mainstack;
71	SV **stack_sp;	94	SV **stack_sp;
72	OP *op;	95	OP *op;
73	SV **curpad;	96	SV **curpad;
		97	AV *comppad;
74	SV **stack_base;	98	SV **stack_base;
75	SV **stack_max;	99	SV **stack_max;
76	SV **tmps_stack;	100	SV **tmps_stack;
77	I32 tmps_floor;	101	I32 tmps_floor;
78	I32 tmps_ix;	102	I32 tmps_ix;
…		…
88	I32 savestack_max;	112	I32 savestack_max;
89	OP **retstack;	113	OP **retstack;
90	I32 retstack_ix;	114	I32 retstack_ix;
91	I32 retstack_max;	115	I32 retstack_max;
92	COP *curcop;	116	COP *curcop;
93	JMPENV start_env;
94	JMPENV *top_env;	117	JMPENV *top_env;
95		118
96	/* data associated with this coroutine (initial args) */	119	/* data associated with this coroutine (initial args) */
97	AV *args;	120	AV *args;
98	};	121	};
…		…
103	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
104	static HV *coro_state_stash;	127	static HV *coro_state_stash;
105	static SV *ucoro_state_sv;	128	static SV *ucoro_state_sv;
106	static U32 ucoro_state_hash;	129	static U32 ucoro_state_hash;
107	static HV *padlist_cache;	130	static HV *padlist_cache;
		131	static SV coro_mortal; / will be freed after next transfer */
108		132
109	/* mostly copied from op.c:cv_clone2 */	133	/* mostly copied from op.c:cv_clone2 */
110	STATIC AV *	134	STATIC AV *
111	clone_padlist (AV *protopadlist)	135	clone_padlist (AV *protopadlist)
112	{	136	{
…		…
158	sv = (SV *) newAV ();	182	sv = (SV *) newAV ();
159	else if (*name == '%')	183	else if (*name == '%')
160	sv = (SV *) newHV ();	184	sv = (SV *) newHV ();
161	else	185	else
162	sv = NEWSV (0, 0);	186	sv = NEWSV (0, 0);
		187	#ifdef SvPADBUSY
163	if (!SvPADBUSY (sv))	188	if (!SvPADBUSY (sv))
		189	#endif
164	SvPADMY_on (sv);	190	SvPADMY_on (sv);
165	npad[ix] = sv;	191	npad[ix] = sv;
166	}	192	}
167	}	193	}
168	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	194	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
…		…
198	#endif	224	#endif
199		225
200	return newpadlist;	226	return newpadlist;
201	}	227	}
202		228
203	#ifdef MAY_FLUSH	229	STATIC void
204	STATIC AV *
205	free_padlist (AV *padlist)	230	free_padlist (AV *padlist)
206	{	231	{
207	/* may be during global destruction */	232	/* may be during global destruction */
208	if (SvREFCNT(padlist))	233	if (SvREFCNT (padlist))
209	{	234	{
210	I32 i = AvFILLp(padlist);	235	I32 i = AvFILLp (padlist);
211	while (i >= 0)	236	while (i >= 0)
212	{	237	{
213	SV **svp = av_fetch(padlist, i--, FALSE);	238	SV **svp = av_fetch (padlist, i--, FALSE);
214	SV sv = svp ? svp : Nullsv;
215	if (sv)	239	if (svp)
		240	{
		241	SV *sv;
		242	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
216	SvREFCNT_dec(sv);	243	SvREFCNT_dec (sv);
		244
		245	SvREFCNT_dec (*svp);
		246	}
217	}	247	}
218		248
219	SvREFCNT_dec((SV*)padlist);	249	SvREFCNT_dec ((SV*)padlist);
220	}	250	}
221	}	251	}
222	#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};
223		267
224	/* the next two functions merely cache the padlists */	268	/* the next two functions merely cache the padlists */
225	STATIC void	269	STATIC void
226	get_padlist (CV *cv)	270	get_padlist (CV *cv)
227	{	271	{
228	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	272	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
229		273
230	if (he && AvFILLp ((AV )he) >= 0)	274	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
231	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	275	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
232	else	276	else
233	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	277	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
234	}	278	}
235		279
236	STATIC void	280	STATIC void
237	put_padlist (CV *cv)	281	put_padlist (CV *cv)
238	{	282	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	283	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
240		284
241	if (SvTYPE (*he) != SVt_PVAV)	285	if (!mg)
242	{	286	{
243	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;
244	he = (SV )newAV ();	290	mg->mg_obj = (SV *)newAV ();
245	}	291	}
246		292
247	av_push ((AV )he, (SV *)CvPADLIST (cv));	293	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
248	}	294	}
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		295
276	#define SB do {	296	#define SB do {
277	#define SE } while (0)	297	#define SE } while (0)
278		298
279	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	299	#define LOAD(state) load_state(aTHX_ (state));
280	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	300	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281		301
282	#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
283		303
284	static void	304	static void
285	load_state(pTHX_ Coro__State c)	305	load_state(pTHX_ Coro__State c)
286	{	306	{
287	PL_dowarn = c->dowarn;	307	PL_dowarn = c->dowarn;
		308	PL_in_eval = c->in_eval;
288		309
289	PL_curstackinfo = c->curstackinfo;	310	PL_curstackinfo = c->curstackinfo;
290	PL_curstack = c->curstack;	311	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;	312	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;	313	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;	314	PL_op = c->op;
294	PL_curpad = c->curpad;	315	PL_curpad = c->curpad;
		316	PL_comppad = c->comppad;
295	PL_stack_base = c->stack_base;	317	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;	318	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;	319	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;	320	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;	321	PL_tmps_ix = c->tmps_ix;
…		…
309	PL_savestack_max = c->savestack_max;	331	PL_savestack_max = c->savestack_max;
310	PL_retstack = c->retstack;	332	PL_retstack = c->retstack;
311	PL_retstack_ix = c->retstack_ix;	333	PL_retstack_ix = c->retstack_ix;
312	PL_retstack_max = c->retstack_max;	334	PL_retstack_max = c->retstack_max;
313	PL_curcop = c->curcop;	335	PL_curcop = c->curcop;
314	PL_start_env = c->start_env;
315	PL_top_env = c->top_env;	336	PL_top_env = c->top_env;
316		337
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
359		380
360	PUSHs (Nullsv);	381	PUSHs (Nullsv);
361	/* this loop was inspired by pp_caller */	382	/* this loop was inspired by pp_caller */
362	for (;;)	383	for (;;)
363	{	384	{
364	do	385	while (cxix >= 0)
365	{	386	{
366	PERL_CONTEXT *cx = &ccstk[cxix--];	387	PERL_CONTEXT *cx = &ccstk[cxix--];
367		388
368	if (CxTYPE(cx) == CXt_SUB)	389	if (CxTYPE(cx) == CXt_SUB)
369	{	390	{
…		…
388	PUSHs ((SV *)cv);	409	PUSHs ((SV *)cv);
389		410
390	get_padlist (cv); /* this is a monster */	411	get_padlist (cv); /* this is a monster */
391	}	412	}
392	}	413	}
		414	#ifdef CXt_FORMAT
393	else if (CxTYPE(cx) == CXt_FORMAT)	415	else if (CxTYPE(cx) == CXt_FORMAT)
394	{	416	{
395	/* 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? */
396	/* my bold guess is as a simple, plain sub... */	418	/* my bold guess is as a simple, plain sub... */
397	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");
398	}	420	}
		421	#endif
399	}	422	}
400	while (cxix >= 0);
401		423
402	if (top_si->si_type == PERLSI_MAIN)	424	if (top_si->si_type == PERLSI_MAIN)
403	break;	425	break;
404		426
405	top_si = top_si->si_prev;	427	top_si = top_si->si_prev;
…		…
412		434
413	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;
414	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	436	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
415	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	437	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
416		438
417	/* I have not the slightest idea of why av_reify is necessary */
418	/* but if it's missing the defav contents magically get replaced sometimes */
419	if (c->defav)
420	av_reify (c->defav);
421
422	c->dowarn = PL_dowarn;	439	c->dowarn = PL_dowarn;
		440	c->in_eval = PL_in_eval;
423		441
424	c->curstackinfo = PL_curstackinfo;	442	c->curstackinfo = PL_curstackinfo;
425	c->curstack = PL_curstack;	443	c->curstack = PL_curstack;
426	c->mainstack = PL_mainstack;	444	c->mainstack = PL_mainstack;
427	c->stack_sp = PL_stack_sp;	445	c->stack_sp = PL_stack_sp;
428	c->op = PL_op;	446	c->op = PL_op;
429	c->curpad = PL_curpad;	447	c->curpad = PL_curpad;
		448	c->comppad = PL_comppad;
430	c->stack_base = PL_stack_base;	449	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;	450	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;	451	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;	452	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;	453	c->tmps_ix = PL_tmps_ix;
…		…
444	c->savestack_max = PL_savestack_max;	463	c->savestack_max = PL_savestack_max;
445	c->retstack = PL_retstack;	464	c->retstack = PL_retstack;
446	c->retstack_ix = PL_retstack_ix;	465	c->retstack_ix = PL_retstack_ix;
447	c->retstack_max = PL_retstack_max;	466	c->retstack_max = PL_retstack_max;
448	c->curcop = PL_curcop;	467	c->curcop = PL_curcop;
449	c->start_env = PL_start_env;
450	c->top_env = PL_top_env;	468	c->top_env = PL_top_env;
451	}	469	}
452		470
453	/*	471	/*
454	* allocate various perl stacks. This is an exact copy	472	* allocate various perl stacks. This is an exact copy
…		…
475		493
476	New(54,PL_markstack,16,I32);	494	New(54,PL_markstack,16,I32);
477	PL_markstack_ptr = PL_markstack;	495	PL_markstack_ptr = PL_markstack;
478	PL_markstack_max = PL_markstack + 16;	496	PL_markstack_max = PL_markstack + 16;
479		497
		498	#ifdef SET_MARK_OFFSET
480	SET_MARK_OFFSET;	499	SET_MARK_OFFSET;
		500	#endif
481		501
482	New(54,PL_scopestack,16,I32);	502	New(54,PL_scopestack,16,I32);
483	PL_scopestack_ix = 0;	503	PL_scopestack_ix = 0;
484	PL_scopestack_max = 16;	504	PL_scopestack_max = 16;
485		505
…		…
492	PL_retstack_max = 8;	512	PL_retstack_max = 8;
493	}	513	}
494		514
495	/*	515	/*
496	* destroy the stacks, the callchain etc...	516	* destroy the stacks, the callchain etc...
497	* still there is a memleak of 128 bytes...
498	*/	517	*/
499	STATIC void	518	STATIC void
500	destroy_stacks(pTHX)	519	destroy_stacks(pTHX)
501	{	520	{
		521	if (!IN_DESTRUCT)
		522	{
502	/* is this ugly, I ask? */	523	/* is this ugly, I ask? */
503	while (PL_scopestack_ix)	524	while (PL_scopestack_ix)
504	LEAVE;	525	LEAVE;
505		526
506	/* sure it is, but more important: is it correct?? :/ */	527	/* sure it is, but more important: is it correct?? :/ */
507	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */	528	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
508	FREETMPS;	529	FREETMPS;
		530	}
509		531
510	while (PL_curstackinfo->si_next)	532	while (PL_curstackinfo->si_next)
511	PL_curstackinfo = PL_curstackinfo->si_next;	533	PL_curstackinfo = PL_curstackinfo->si_next;
512		534
513	while (PL_curstackinfo)	535	while (PL_curstackinfo)
…		…
518	dSP;	540	dSP;
519	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	541	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
520	PUTBACK; /* possibly superfluous */	542	PUTBACK; /* possibly superfluous */
521	}	543	}
522		544
		545	if (!IN_DESTRUCT)
		546	{
523	dounwind(-1);	547	dounwind(-1);
524
525	SvREFCNT_dec(PL_curstackinfo->si_stack);	548	SvREFCNT_dec(PL_curstackinfo->si_stack);
		549	}
		550
526	Safefree(PL_curstackinfo->si_cxstack);	551	Safefree(PL_curstackinfo->si_cxstack);
527	Safefree(PL_curstackinfo);	552	Safefree(PL_curstackinfo);
528	PL_curstackinfo = p;	553	PL_curstackinfo = p;
529	}	554	}
530		555
…		…
545	stack->refcnt = 1;	570	stack->refcnt = 1;
546	stack->usecnt = 1;	571	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;	572	stack->gencnt = ctx->gencnt = 0;
548	if (alloc)	573	if (alloc)
549	{	574	{
550	#ifdef HAVE_MMAP	575	#if HAVE_MMAP
551	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */	576	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
552	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	577	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
553	if (stack->sptr == (void *)-1)	578	if (stack->sptr == (void *)-1)
554	#endif	579	#endif
555	{	580	{
556	/FIXME//D//* reasonable stack size! */	581	/FIXME//D//* reasonable stack size! */
557	stack->ssize = -4096 * sizeof (long);	582	stack->ssize = -4096 * sizeof (long);
…		…
577	{	602	{
578	#ifdef HAVE_MMAP	603	#ifdef HAVE_MMAP
579	if (stack->ssize > 0 && stack->sptr)	604	if (stack->ssize > 0 && stack->sptr)
580	munmap (stack->sptr, stack->ssize);	605	munmap (stack->sptr, stack->ssize);
581	else	606	else
582	#else	607	#endif
583	Safefree (stack->sptr);	608	Safefree (stack->sptr);
584	#endif	609
585	Safefree (stack);	610	Safefree (stack);
586	}	611	}
587	else if (ctx->gencnt == stack->gencnt)	612	else if (ctx->gencnt == stack->gencnt)
588	--stack->usecnt;	613	--stack->usecnt;
589	}	614	}
…		…
598	dSP;	623	dSP;
599	Coro__State ctx = (Coro__State)arg;	624	Coro__State ctx = (Coro__State)arg;
600	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	625	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
601		626
602	coro_init_stacks (aTHX);	627	coro_init_stacks (aTHX);
603	JMPENV_BOOTSTRAP;	628	/PL_curcop = 0;/
		629	/PL_in_eval = PL_in_eval;/ /* inherit */
		630	SvREFCNT_dec (GvAV (PL_defgv));
		631	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		632
604	SPAGAIN;	633	SPAGAIN;
605
606	/PL_curcop = 0;/
607	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = ctx->args;
609		634
610	if (ctx->stack)	635	if (ctx->stack)
611	{	636	{
612	ctx->cursp = 0;	637	ctx->cursp = 0;
613		638
614	PUSHMARK(SP);	639	PUSHMARK(SP);
615	PUTBACK;	640	PUTBACK;
616	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	641	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		642
		643	if (SvTRUE (ERRSV))
		644	croak (NULL);
		645	else
617	croak ("FATAL: CCTXT coroutine returned!");	646	croak ("FATAL: CCTXT coroutine returned!");
618	}	647	}
619	else	648	else
620	{	649	{
621	UNOP myop;	650	UNOP myop;
622		651
…		…
634	* that doesn't matter, though, since it is only	663	* that doesn't matter, though, since it is only
635	* pp_nextstate and we never return...	664	* pp_nextstate and we never return...
636	* ah yes, and I don't care anyways ;)	665	* ah yes, and I don't care anyways ;)
637	*/	666	*/
638	PUTBACK;	667	PUTBACK;
639	PL_op = pp_entersub();	668	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
640	SPAGAIN;	669	SPAGAIN;
641		670
642	ENTER; /* necessary e.g. for dounwind */	671	ENTER; /* necessary e.g. for dounwind */
643	}	672	}
644	}	673	}
…		…
648	{	677	{
649	/*	678	/*
650	* this is a _very_ stripped down perl interpreter ;)	679	* this is a _very_ stripped down perl interpreter ;)
651	*/	680	*/
652	Coro__State ctx = (Coro__State)arg;	681	Coro__State ctx = (Coro__State)arg;
		682	JMPENV coro_start_env;
		683
		684	PL_top_env = &ctx->start_env;
653		685
654	ctx->cursp = 0;	686	ctx->cursp = 0;
655	PL_op = PL_op->op_next;	687	PL_op = PL_op->op_next;
656	CALLRUNOPS(aTHX);	688	CALLRUNOPS(aTHX);
657	/NORETURN/	689
658	abort ();	690	abort ();
659	}	691	}
660		692
661	STATIC void	693	STATIC void
662	transfer(pTHX_ struct coro prev, struct coro next, int flags)	694	transfer(pTHX_ struct coro prev, struct coro next, int flags)
663	{	695	{
664	dSP;
665	dSTACKLEVEL;	696	dSTACKLEVEL;
		697	static struct coro *xnext;
666		698
667	if (prev != next)	699	if (prev != next)
668	{	700	{
		701	xnext = next;
		702
669	if (next->mainstack)	703	if (next->mainstack)
670	{	704	{
671	SAVE (prev, flags);	705	SAVE (prev, flags);
672	LOAD (next);	706	LOAD (next);
673		707
…		…
696	continue_coro, (void *)next,	730	continue_coro, (void *)next,
697	next->stack->sptr, labs (next->stack->ssize));	731	next->stack->sptr, labs (next->stack->ssize));
698	}	732	}
699		733
700	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	734	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		735	/* don't add any code here */
701	}	736	}
702		737
703	}	738	}
704	else if (next->tmps_ix == -2)	739	else if (next->tmps_ix == -2)
705	croak ("tried to transfer to running coroutine");	740	croak ("tried to transfer to running coroutine");
…		…
712	if (!prev->stack)	747	if (!prev->stack)
713	allocate_stack (prev, 0);	748	allocate_stack (prev, 0);
714		749
715	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	750	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
716	{	751	{
		752	PL_top_env = &next->start_env;
		753
717	setup_coro (next);	754	setup_coro (next);
718		755
719	prev->stack->refcnt++;	756	prev->stack->refcnt++;
720	prev->stack->usecnt++;	757	prev->stack->usecnt++;
721	next->stack = prev->stack;	758	next->stack = prev->stack;
722	next->gencnt = prev->gencnt;	759	next->gencnt = prev->gencnt;
723	}	760	}
724	else	761	else
725	{	762	{
		763	assert (!next->stack);
726	allocate_stack (next, 1);	764	allocate_stack (next, 1);
727	coro_create (&(next->stack->cctx),	765	coro_create (&(next->stack->cctx),
728	setup_coro, (void *)next,	766	setup_coro, (void *)next,
729	next->stack->sptr, labs (next->stack->ssize));	767	next->stack->sptr, labs (next->stack->ssize));
730	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	768	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		769	/* don't add any code here */
731	}	770	}
732	}	771	}
733	else	772	else
734	setup_coro (next);	773	setup_coro (next);
735	}	774	}
		775
		776	/*
		777	* xnext is now either prev or next, depending on wether
		778	* we switched the c stack or not. that's why I use a global
		779	* variable, that should become thread-specific at one point.
		780	*/
		781	xnext->cursp = stacklevel;
736	}	782	}
737		783
738	next->cursp = stacklevel;	784	if (coro_mortal)
		785	{
		786	SvREFCNT_dec (coro_mortal);
		787	coro_mortal = 0;
		788	}
		789	}
		790
		791	#define SV_CORO(sv,func) \
		792	do { \
		793	if (SvROK (sv)) \
		794	sv = SvRV (sv); \
		795	\
		796	if (SvTYPE(sv) == SVt_PVHV) \
		797	{ \
		798	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		799	\
		800	if (!he) \
		801	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		802	\
		803	(sv) = SvRV (HeVAL(he)); \
		804	} \
		805	\
		806	/* must also be changed inside Coro::Cont::yield */ \
		807	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
		808	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		809	\
		810	} while(0)
		811
		812	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		813
		814	static void
		815	api_transfer(pTHX_ SV prev, SV next, int flags)
		816	{
		817	SV_CORO (prev, "Coro::transfer");
		818	SV_CORO (next, "Coro::transfer");
		819
		820	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
		821	}
		822
		823	/ Coro ******************************************************************/
		824
		825	#define PRIO_MAX 3
		826	#define PRIO_HIGH 1
		827	#define PRIO_NORMAL 0
		828	#define PRIO_LOW -1
		829	#define PRIO_IDLE -3
		830	#define PRIO_MIN -4
		831
		832	/* for Coro.pm */
		833	static GV coro_current, coro_idle;
		834	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		835	static int coro_nready;
		836
		837	static void
		838	coro_enq (SV *sv)
		839	{
		840	if (SvTYPE (sv) == SVt_PVHV)
		841	{
		842	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		843	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		844
		845	prio = prio > PRIO_MAX ? PRIO_MAX
		846	: prio < PRIO_MIN ? PRIO_MIN
		847	: prio;
		848
		849	av_push (coro_ready [prio - PRIO_MIN], sv);
		850	coro_nready++;
		851
		852	return;
		853	}
		854
		855	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		856	}
		857
		858	static SV *
		859	coro_deq (int min_prio)
		860	{
		861	int prio = PRIO_MAX - PRIO_MIN;
		862
		863	min_prio -= PRIO_MIN;
		864	if (min_prio < 0)
		865	min_prio = 0;
		866
		867	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		868	if (av_len (coro_ready[prio]) >= 0)
		869	{
		870	coro_nready--;
		871	return av_shift (coro_ready[prio]);
		872	}
		873
		874	return 0;
		875	}
		876
		877	static void
		878	api_ready (SV *coro)
		879	{
		880	if (SvROK (coro))
		881	coro = SvRV (coro);
		882
		883	coro_enq (SvREFCNT_inc (coro));
		884	}
		885
		886	static void
		887	api_schedule (void)
		888	{
		889	SV prev, next;
		890
		891	prev = SvRV (GvSV (coro_current));
		892	next = coro_deq (PRIO_MIN);
		893
		894	if (!next)
		895	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		896
		897	/* free this only after the transfer */
		898	coro_mortal = prev;
		899	SV_CORO (prev, "Coro::schedule");
		900
		901	SvRV (GvSV (coro_current)) = next;
		902
		903	SV_CORO (next, "Coro::schedule");
		904
		905	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		906	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		907	}
		908
		909	static void
		910	api_cede (void)
		911	{
		912	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		913
		914	api_schedule ();
739	}	915	}
740		916
741	MODULE = Coro::State PACKAGE = Coro::State	917	MODULE = Coro::State PACKAGE = Coro::State
742		918
743	PROTOTYPES: ENABLE	919	PROTOTYPES: ENABLE
…		…
755		931
756	if (!padlist_cache)	932	if (!padlist_cache)
757	padlist_cache = newHV ();	933	padlist_cache = newHV ();
758		934
759	main_mainstack = PL_mainstack;	935	main_mainstack = PL_mainstack;
		936
		937	coroapi.ver = CORO_API_VERSION;
		938	coroapi.transfer = api_transfer;
760	}	939	}
761		940
762	Coro::State	941	Coro::State
763	_newprocess(args)	942	_newprocess(args)
764	SV * args	943	SV * args
…		…
767	Coro__State coro;	946	Coro__State coro;
768		947
769	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
770	croak ("Coro::State::_newprocess expects an arrayref");	949	croak ("Coro::State::_newprocess expects an arrayref");
771		950
772	New (0, coro, 1, struct coro);	951	Newz (0, coro, 1, struct coro);
773		952
774	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
775	coro->mainstack = 0; /* actual work is done inside transfer */	954	coro->mainstack = 0; /* actual work is done inside transfer */
776	coro->stack = 0;	955	coro->stack = 0;
777		956
		957	/* same as JMPENV_BOOTSTRAP */
		958	/* we might be able to recycle start_env, but safe is safe */
		959	//Zero(&coro->start_env, 1, JMPENV);
		960	coro->start_env.je_ret = -1;
		961	coro->start_env.je_mustcatch = TRUE;
		962
778	RETVAL = coro;	963	RETVAL = coro;
779	OUTPUT:	964	OUTPUT:
780	RETVAL	965	RETVAL
781		966
782	void	967	void
783	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	968	transfer(prev, next, flags)
784	Coro::State_or_hashref prev	969	SV *prev
785	Coro::State_or_hashref next	970	SV *next
786	int flags	971	int flags
787	PROTOTYPE: @	972	PROTOTYPE: @
788	CODE:	973	CODE:
		974	PUTBACK;
		975	SV_CORO (next, "Coro::transfer");
		976	SV_CORO (prev, "Coro::transfer");
789	transfer (aTHX_ prev, next, flags);	977	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		978	SPAGAIN;
790		979
791	void	980	void
792	DESTROY(coro)	981	DESTROY(coro)
793	Coro::State coro	982	Coro::State coro
794	CODE:	983	CODE:
795		984
796	if (coro->mainstack && coro->mainstack != main_mainstack)	985	if (coro->mainstack && coro->mainstack != main_mainstack)
797	{	986	{
798	struct coro temp;	987	struct coro temp;
799		988
		989	PUTBACK;
800	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	990	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
801	LOAD(aTHX_ coro);	991	LOAD(aTHX_ coro);
		992	SPAGAIN;
802		993
803	destroy_stacks (aTHX);	994	destroy_stacks (aTHX);
804		995
805	LOAD((&temp)); /* this will get rid of defsv etc.. */	996	LOAD((&temp)); /* this will get rid of defsv etc.. */
		997	SPAGAIN;
806		998
807	coro->mainstack = 0;	999	coro->mainstack = 0;
808	}	1000	}
809		1001
810	deallocate_stack (coro);	1002	deallocate_stack (coro);
811		1003	SvREFCNT_dec (coro->args);
812	Safefree (coro);	1004	Safefree (coro);
813		1005
814	void	1006	void
815	flush()	1007	_exit(code)
		1008	int code
		1009	PROTOTYPE: $
816	CODE:	1010	CODE:
817	#ifdef MAY_FLUSH	1011	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
818	flush_padlist_cache ();	1012	_exit (code);
		1013	#else
		1014	signal (SIGTERM, SIG_DFL);
		1015	raise (SIGTERM);
		1016	exit (code);
819	#endif	1017	#endif
820		1018
821	MODULE = Coro::State PACKAGE = Coro::Cont	1019	MODULE = Coro::State PACKAGE = Coro::Cont
822		1020
823	# this is slightly dirty	1021	# this is slightly dirty (should expose a c-level api)
824		1022
825	void	1023	void
826	yield(...)	1024	yield(...)
827	PROTOTYPE: @	1025	PROTOTYPE: @
828	CODE:	1026	CODE:
…		…
830	SV *sv;	1028	SV *sv;
831	AV *defav = GvAV (PL_defgv);	1029	AV *defav = GvAV (PL_defgv);
832	struct coro prev, next;	1030	struct coro prev, next;
833		1031
834	if (!returnstk)	1032	if (!returnstk)
835	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1033	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
836		1034
837	/* set up @_ -- ugly */	1035	/* set up @_ -- ugly */
838	av_clear (defav);	1036	av_clear (defav);
839	av_fill (defav, items - 1);	1037	av_fill (defav, items - 1);
840	while (items--)	1038	while (items--)
…		…
846	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1044	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
847	SvREFCNT_dec (sv);	1045	SvREFCNT_dec (sv);
848		1046
849	transfer(aTHX_ prev, next, 0);	1047	transfer(aTHX_ prev, next, 0);
850		1048
		1049	MODULE = Coro::State PACKAGE = Coro
		1050
		1051	# this is slightly dirty (should expose a c-level api)
		1052
		1053	BOOT:
		1054	{
		1055	int i;
		1056	HV *stash = gv_stashpv ("Coro", TRUE);
		1057
		1058	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1059	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1060	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1061	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1062	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1063	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1064
		1065	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1066	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1067
		1068	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1069	coro_ready[i] = newAV ();
		1070
		1071	{
		1072	SV *sv = perl_get_sv("Coro::API", 1);
		1073
		1074	coroapi.schedule = api_schedule;
		1075	coroapi.cede = api_cede;
		1076	coroapi.ready = api_ready;
		1077	coroapi.nready = &coro_nready;
		1078	coroapi.current = coro_current;
		1079
		1080	GCoroAPI = &coroapi;
		1081	sv_setiv(sv, (IV)&coroapi);
		1082	SvREADONLY_on(sv);
		1083	}
		1084	}
		1085
		1086	#if !PERL_MICRO
		1087
		1088	void
		1089	ready(self)
		1090	SV * self
		1091	PROTOTYPE: $
		1092	CODE:
		1093	api_ready (self);
		1094
		1095	#endif
		1096
		1097	int
		1098	nready(...)
		1099	PROTOTYPE:
		1100	CODE:
		1101	RETVAL = coro_nready;
		1102	OUTPUT:
		1103	RETVAL
		1104
		1105	void
		1106	schedule(...)
		1107	PROTOTYPE:
		1108	CODE:
		1109	api_schedule ();
		1110
		1111	void
		1112	cede(...)
		1113	PROTOTYPE:
		1114	CODE:
		1115	api_cede ();
		1116

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Comparing Coro/Coro/State.xs (file contents): Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs. Revision 1.50 by pcg, Sun Nov 30 16:59:15 2003 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.50 by pcg, Sun Nov 30 16:59:15 2003 UTC