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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.39 by root, Sun Nov 25 20:04:05 2001 UTC vs.
Revision 1.55 by pcg, Thu Apr 1 02:29:05 2004 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
		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
4		27
5	#include "libcoro/coro.c"	28	#include "libcoro/coro.c"
6		29
7	#include <signal.h>	30	#include <signal.h>
8		31
16	# undef HAVE_MMAP	39	# undef HAVE_MMAP
17	# endif	40	# endif
18	# endif	41	# endif
19	#endif	42	#endif
20		43
21	#define MAY_FLUSH /* increases codesize and is rarely used */
22
23	#define SUB_INIT "Coro::State::initialize"	44	#define SUB_INIT "Coro::State::initialize"
24	#define UCORO_STATE "_coro_state"	45	#define UCORO_STATE "_coro_state"
25		46
26	/* The next macro should declare a variable stacklevel that contains and approximation	47	/* 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	48	* to the current C stack pointer. Its property is that it changes with each call
…		…
31	#define IN_DESTRUCT (PL_main_cv == Nullcv)	52	#define IN_DESTRUCT (PL_main_cv == Nullcv)
32		53
33	#define labs(l) ((l) >= 0 ? (l) : -(l))	54	#define labs(l) ((l) >= 0 ? (l) : -(l))
34		55
35	#include "CoroAPI.h"	56	#include "CoroAPI.h"
		57
		58	#ifdef USE_ITHREADS
		59	static perl_mutex coro_mutex;
		60	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		61	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		62	#else
		63	# define LOCK 0
		64	# define UNLOCK 0
		65	#endif
36		66
37	static struct CoroAPI coroapi;	67	static struct CoroAPI coroapi;
38		68
39	/* this is actually not only the c stack but also c registers etc... */	69	/* this is actually not only the c stack but also c registers etc... */
40	typedef struct {	70	typedef struct {
…		…
47	void *sptr;	77	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	78	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;	79	} coro_stack;
50		80
51	struct coro {	81	struct coro {
		82	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		83	JMPENV start_env;
		84
52	/* the optional C context */	85	/* the optional C context */
53	coro_stack *stack;	86	coro_stack *stack;
54	void *cursp;	87	void *cursp;
55	int gencnt;	88	int gencnt;
56		89
57	/* optionally saved, might be zero */	90	/* optionally saved, might be zero */
58	AV *defav;	91	AV *defav;
59	SV *defsv;	92	SV *defsv;
60	SV *errsv;	93	SV *errsv;
61	/* TODO: PL_pmop might be nice && effortless to save. */
62		94
63	/* saved global state not related to stacks */	95	/* saved global state not related to stacks */
64	U8 dowarn;	96	U8 dowarn;
65	I32 in_eval;	97	I32 in_eval;
66		98
…		…
69	AV *curstack;	101	AV *curstack;
70	AV *mainstack;	102	AV *mainstack;
71	SV **stack_sp;	103	SV **stack_sp;
72	OP *op;	104	OP *op;
73	SV **curpad;	105	SV **curpad;
		106	AV *comppad;
74	SV **stack_base;	107	SV **stack_base;
75	SV **stack_max;	108	SV **stack_max;
76	SV **tmps_stack;	109	SV **tmps_stack;
77	I32 tmps_floor;	110	I32 tmps_floor;
78	I32 tmps_ix;	111	I32 tmps_ix;
…		…
101		134
102	static AV main_mainstack; / used to differentiate between $main and others */	135	static AV main_mainstack; / used to differentiate between $main and others */
103	static HV *coro_state_stash;	136	static HV *coro_state_stash;
104	static SV *ucoro_state_sv;	137	static SV *ucoro_state_sv;
105	static U32 ucoro_state_hash;	138	static U32 ucoro_state_hash;
106	static HV *padlist_cache;
107	static SV coro_mortal; / will be freed after next transfer */	139	static SV coro_mortal; / will be freed after next transfer */
108		140
109	/* mostly copied from op.c:cv_clone2 */	141	/* mostly copied from op.c:cv_clone2 */
110	STATIC AV *	142	STATIC AV *
111	clone_padlist (AV *protopadlist)	143	clone_padlist (AV *protopadlist)
…		…
140	AvFLAGS (av) = AVf_REIFY;	172	AvFLAGS (av) = AVf_REIFY;
141		173
142	for (ix = fpad; ix > 0; ix--)	174	for (ix = fpad; ix > 0; ix--)
143	{	175	{
144	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	176	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		177
145	if (namesv && namesv != &PL_sv_undef)	178	if (namesv && namesv != &PL_sv_undef)
146	{	179	{
147	char name = SvPVX (namesv); / XXX */	180	char name = SvPVX (namesv); / XXX */
		181
148	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	182	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
149	{ /* lexical from outside? */	183	{ /* lexical from outside? */
150	npad[ix] = SvREFCNT_inc (ppad[ix]);	184	npad[ix] = SvREFCNT_inc (ppad[ix]);
151	}	185	}
152	else	186	else
…		…
158	sv = (SV *) newAV ();	192	sv = (SV *) newAV ();
159	else if (*name == '%')	193	else if (*name == '%')
160	sv = (SV *) newHV ();	194	sv = (SV *) newHV ();
161	else	195	else
162	sv = NEWSV (0, 0);	196	sv = NEWSV (0, 0);
		197
		198	#ifdef SvPADBUSY
163	if (!SvPADBUSY (sv))	199	if (!SvPADBUSY (sv))
		200	#endif
164	SvPADMY_on (sv);	201	SvPADMY_on (sv);
		202
165	npad[ix] = sv;	203	npad[ix] = sv;
166	}	204	}
167	}	205	}
168	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	206	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
169	{	207	{
…		…
198	#endif	236	#endif
199		237
200	return newpadlist;	238	return newpadlist;
201	}	239	}
202		240
203	#ifdef MAY_FLUSH
204	STATIC void	241	STATIC void
205	free_padlist (AV *padlist)	242	free_padlist (AV *padlist)
206	{	243	{
207	/* may be during global destruction */	244	/* may be during global destruction */
208	if (SvREFCNT(padlist))	245	if (SvREFCNT (padlist))
209	{	246	{
210	I32 i = AvFILLp(padlist);	247	I32 i = AvFILLp (padlist);
211	while (i >= 0)	248	while (i >= 0)
212	{	249	{
213	SV **svp = av_fetch(padlist, i--, FALSE);	250	SV **svp = av_fetch (padlist, i--, FALSE);
214	SV sv = svp ? svp : Nullsv;
215	if (sv)	251	if (svp)
		252	{
		253	SV *sv;
		254	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
216	SvREFCNT_dec(sv);	255	SvREFCNT_dec (sv);
		256
		257	SvREFCNT_dec (*svp);
		258	}
217	}	259	}
218		260
219	SvREFCNT_dec((SV*)padlist);	261	SvREFCNT_dec ((SV*)padlist);
220	}	262	}
221	}	263	}
222	#endif	264
		265	STATIC int
		266	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		267	{
		268	AV *padlist;
		269	AV av = (AV )mg->mg_obj;
		270
		271	/* casting is fun. */
		272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		273	free_padlist (padlist);
		274	}
		275
		276	#define PERL_MAGIC_coro PERL_MAGIC_ext
		277
		278	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
223		279
224	/* the next two functions merely cache the padlists */	280	/* the next two functions merely cache the padlists */
225	STATIC void	281	STATIC void
226	get_padlist (CV *cv)	282	get_padlist (CV *cv)
227	{	283	{
228	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	284	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
229		285
230	if (he && AvFILLp ((AV )he) >= 0)	286	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
231	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	287	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
232	else	288	else
233	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	289	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
234	}	290	}
235		291
236	STATIC void	292	STATIC void
237	put_padlist (CV *cv)	293	put_padlist (CV *cv)
238	{	294	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	295	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
240		296
241	if (SvTYPE (*he) != SVt_PVAV)	297	if (!mg)
242	{	298	{
243	SvREFCNT_dec (*he);	299	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		300	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		301	mg->mg_virtual = &vtbl_coro;
244	he = (SV )newAV ();	302	mg->mg_obj = (SV *)newAV ();
245	}	303	}
246		304
247	av_push ((AV )he, (SV *)CvPADLIST (cv));	305	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
248	}	306	}
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		307
276	#define SB do {	308	#define SB do {
277	#define SE } while (0)	309	#define SE } while (0)
278		310
279	#define LOAD(state) load_state(aTHX_ (state));	311	#define LOAD(state) load_state(aTHX_ (state));
280	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	312	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281		313
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	314	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
283		315
284	static void	316	static void
285	load_state(pTHX_ Coro__State c)	317	load_state(pTHX_ Coro__State c)
286	{	318	{
287	PL_dowarn = c->dowarn;	319	PL_dowarn = c->dowarn;
…		…
291	PL_curstack = c->curstack;	323	PL_curstack = c->curstack;
292	PL_mainstack = c->mainstack;	324	PL_mainstack = c->mainstack;
293	PL_stack_sp = c->stack_sp;	325	PL_stack_sp = c->stack_sp;
294	PL_op = c->op;	326	PL_op = c->op;
295	PL_curpad = c->curpad;	327	PL_curpad = c->curpad;
		328	PL_comppad = c->comppad;
296	PL_stack_base = c->stack_base;	329	PL_stack_base = c->stack_base;
297	PL_stack_max = c->stack_max;	330	PL_stack_max = c->stack_max;
298	PL_tmps_stack = c->tmps_stack;	331	PL_tmps_stack = c->tmps_stack;
299	PL_tmps_floor = c->tmps_floor;	332	PL_tmps_floor = c->tmps_floor;
300	PL_tmps_ix = c->tmps_ix;	333	PL_tmps_ix = c->tmps_ix;
…		…
329		362
330	if (padlist)	363	if (padlist)
331	{	364	{
332	put_padlist (cv); /* mark this padlist as available */	365	put_padlist (cv); /* mark this padlist as available */
333	CvPADLIST(cv) = padlist;	366	CvPADLIST(cv) = padlist;
334	#ifdef USE_THREADS
335	/CvOWNER(cv) = (struct perl_thread )POPs;*/
336	#endif
337	}	367	}
338		368
339	++CvDEPTH(cv);	369	++CvDEPTH(cv);
340	}	370	}
341		371
…		…
368	if (CxTYPE(cx) == CXt_SUB)	398	if (CxTYPE(cx) == CXt_SUB)
369	{	399	{
370	CV *cv = cx->blk_sub.cv;	400	CV *cv = cx->blk_sub.cv;
371	if (CvDEPTH(cv))	401	if (CvDEPTH(cv))
372	{	402	{
373	#ifdef USE_THREADS
374	/XPUSHs ((SV )CvOWNER(cv));*/
375	/CvOWNER(cv) = 0;/
376	/error must unlock this cv etc.. etc.../
377	#endif
378	EXTEND (SP, CvDEPTH(cv)*2);	403	EXTEND (SP, CvDEPTH(cv)*2);
379		404
380	while (--CvDEPTH(cv))	405	while (--CvDEPTH(cv))
381	{	406	{
382	/* this tells the restore code to increment CvDEPTH */	407	/* this tells the restore code to increment CvDEPTH */
…		…
388	PUSHs ((SV *)cv);	413	PUSHs ((SV *)cv);
389		414
390	get_padlist (cv); /* this is a monster */	415	get_padlist (cv); /* this is a monster */
391	}	416	}
392	}	417	}
		418	#ifdef CXt_FORMAT
393	else if (CxTYPE(cx) == CXt_FORMAT)	419	else if (CxTYPE(cx) == CXt_FORMAT)
394	{	420	{
395	/* I never used formats, so how should I know how these are implemented? */	421	/* I never used formats, so how should I know how these are implemented? */
396	/* my bold guess is as a simple, plain sub... */	422	/* my bold guess is as a simple, plain sub... */
397	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	423	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
398	}	424	}
		425	#endif
399	}	426	}
400		427
401	if (top_si->si_type == PERLSI_MAIN)	428	if (top_si->si_type == PERLSI_MAIN)
402	break;	429	break;
403		430
…		…
420	c->curstack = PL_curstack;	447	c->curstack = PL_curstack;
421	c->mainstack = PL_mainstack;	448	c->mainstack = PL_mainstack;
422	c->stack_sp = PL_stack_sp;	449	c->stack_sp = PL_stack_sp;
423	c->op = PL_op;	450	c->op = PL_op;
424	c->curpad = PL_curpad;	451	c->curpad = PL_curpad;
		452	c->comppad = PL_comppad;
425	c->stack_base = PL_stack_base;	453	c->stack_base = PL_stack_base;
426	c->stack_max = PL_stack_max;	454	c->stack_max = PL_stack_max;
427	c->tmps_stack = PL_tmps_stack;	455	c->tmps_stack = PL_tmps_stack;
428	c->tmps_floor = PL_tmps_floor;	456	c->tmps_floor = PL_tmps_floor;
429	c->tmps_ix = PL_tmps_ix;	457	c->tmps_ix = PL_tmps_ix;
…		…
445	}	473	}
446		474
447	/*	475	/*
448	* allocate various perl stacks. This is an exact copy	476	* allocate various perl stacks. This is an exact copy
449	* of perl.c:init_stacks, except that it uses less memory	477	* of perl.c:init_stacks, except that it uses less memory
450	* on the assumption that coroutines do not usually need	478	* on the (sometimes correct) assumption that coroutines do
451	* a lot of stackspace.	479	* not usually need a lot of stackspace.
452	*/	480	*/
453	STATIC void	481	STATIC void
454	coro_init_stacks (pTHX)	482	coro_init_stacks (pTHX)
455	{	483	{
		484	LOCK;
		485
456	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	486	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
457	PL_curstackinfo->si_type = PERLSI_MAIN;	487	PL_curstackinfo->si_type = PERLSI_MAIN;
458	PL_curstack = PL_curstackinfo->si_stack;	488	PL_curstack = PL_curstackinfo->si_stack;
459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	489	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460		490
…		…
469		499
470	New(54,PL_markstack,16,I32);	500	New(54,PL_markstack,16,I32);
471	PL_markstack_ptr = PL_markstack;	501	PL_markstack_ptr = PL_markstack;
472	PL_markstack_max = PL_markstack + 16;	502	PL_markstack_max = PL_markstack + 16;
473		503
		504	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	505	SET_MARK_OFFSET;
		506	#endif
475		507
476	New(54,PL_scopestack,16,I32);	508	New(54,PL_scopestack,16,I32);
477	PL_scopestack_ix = 0;	509	PL_scopestack_ix = 0;
478	PL_scopestack_max = 16;	510	PL_scopestack_max = 16;
479		511
…		…
482	PL_savestack_max = 96;	514	PL_savestack_max = 96;
483		515
484	New(54,PL_retstack,8,OP*);	516	New(54,PL_retstack,8,OP*);
485	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
486	PL_retstack_max = 8;	518	PL_retstack_max = 8;
		519
		520	UNLOCK;
487	}	521	}
488		522
489	/*	523	/*
490	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
491	* still there is a memleak of 128 bytes...
492	*/	525	*/
493	STATIC void	526	STATIC void
494	destroy_stacks(pTHX)	527	destroy_stacks(pTHX)
495	{	528	{
496	if (!IN_DESTRUCT)	529	if (!IN_DESTRUCT)
497	{	530	{
498	/* is this ugly, I ask? */	531	/* is this ugly, I ask? */
499	while (PL_scopestack_ix)	532	LEAVE_SCOPE (0);
500	LEAVE;
501		533
502	/* sure it is, but more important: is it correct?? :/ */	534	/* sure it is, but more important: is it correct?? :/ */
503	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
504	FREETMPS;	535	FREETMPS;
505	}	536	}
506		537
507	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
508	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
509		540
…		…
543	New (0, stack, 1, coro_stack);	574	New (0, stack, 1, coro_stack);
544		575
545	stack->refcnt = 1;	576	stack->refcnt = 1;
546	stack->usecnt = 1;	577	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;	578	stack->gencnt = ctx->gencnt = 0;
		579
548	if (alloc)	580	if (alloc)
549	{	581	{
550	#if HAVE_MMAP	582	#if HAVE_MMAP
551	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	583	stack->ssize = 16384 * 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_ANONYMOUS, 0, 0);	584	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
553	if (stack->sptr == (void *)-1)	585	if (stack->sptr == (void *)-1)
554	#endif	586	#endif
555	{	587	{
556	/FIXME//D//* reasonable stack size! */	588	/FIXME//D//* reasonable stack size! */
557	stack->ssize = -4096 * sizeof (long);	589	stack->ssize = - (8192 * sizeof (long));
558	New (0, stack->sptr, 4096, long);	590	New (0, stack->sptr, 8192, long);
559	}	591	}
560	}	592	}
561	else	593	else
562	stack->sptr = 0;	594	stack->sptr = 0;
563		595
…		…
577	{	609	{
578	#ifdef HAVE_MMAP	610	#ifdef HAVE_MMAP
579	if (stack->ssize > 0 && stack->sptr)	611	if (stack->ssize > 0 && stack->sptr)
580	munmap (stack->sptr, stack->ssize);	612	munmap (stack->sptr, stack->ssize);
581	else	613	else
582	#else	614	#endif
583	Safefree (stack->sptr);	615	Safefree (stack->sptr);
584	#endif	616
585	Safefree (stack);	617	Safefree (stack);
586	}	618	}
587	else if (ctx->gencnt == stack->gencnt)	619	else if (ctx->gencnt == stack->gencnt)
588	--stack->usecnt;	620	--stack->usecnt;
589	}	621	}
…		…
595	/*	627	/*
596	* emulate part of the perl startup here.	628	* emulate part of the perl startup here.
597	*/	629	*/
598	dSP;	630	dSP;
599	Coro__State ctx = (Coro__State)arg;	631	Coro__State ctx = (Coro__State)arg;
600	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	632	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
601		633
602	coro_init_stacks (aTHX);	634	coro_init_stacks (aTHX);
603	/PL_curcop = 0;/	635	/PL_curcop = 0;/
604	/PL_in_eval = PL_in_eval;/ /* inherit */	636	/PL_in_eval = PL_in_eval;/ /* inherit */
605	SvREFCNT_dec (GvAV (PL_defgv));	637	SvREFCNT_dec (GvAV (PL_defgv));
606	GvAV (PL_defgv) = ctx->args;	638	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
607		639
608	SPAGAIN;	640	SPAGAIN;
609		641
610	if (ctx->stack)	642	if (ctx->stack)
611	{	643	{
…		…
638	* that doesn't matter, though, since it is only	670	* that doesn't matter, though, since it is only
639	* pp_nextstate and we never return...	671	* pp_nextstate and we never return...
640	* ah yes, and I don't care anyways ;)	672	* ah yes, and I don't care anyways ;)
641	*/	673	*/
642	PUTBACK;	674	PUTBACK;
643	PL_op = pp_entersub();	675	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
644	SPAGAIN;	676	SPAGAIN;
645		677
646	ENTER; /* necessary e.g. for dounwind */	678	ENTER; /* necessary e.g. for dounwind */
647	}	679	}
648	}	680	}
…		…
654	* this is a _very_ stripped down perl interpreter ;)	686	* this is a _very_ stripped down perl interpreter ;)
655	*/	687	*/
656	Coro__State ctx = (Coro__State)arg;	688	Coro__State ctx = (Coro__State)arg;
657	JMPENV coro_start_env;	689	JMPENV coro_start_env;
658		690
659	/* same as JMPENV_BOOTSTRAP */
660	Zero(&coro_start_env, 1, JMPENV);
661	coro_start_env.je_ret = -1;
662	coro_start_env.je_mustcatch = TRUE;
663	PL_top_env = &coro_start_env;	691	PL_top_env = &ctx->start_env;
664		692
665	ctx->cursp = 0;	693	ctx->cursp = 0;
666	PL_op = PL_op->op_next;	694	PL_op = PL_op->op_next;
667	CALLRUNOPS(aTHX);	695	CALLRUNOPS(aTHX);
668		696
669	abort ();	697	abort ();
670	}	698	}
671		699
672	STATIC void	700	STATIC void
673	transfer(pTHX_ struct coro prev, struct coro next, int flags)	701	transfer (pTHX_ struct coro prev, struct coro next, int flags)
674	{	702	{
675	dSTACKLEVEL;	703	dSTACKLEVEL;
676	static struct coro *xnext;
677		704
678	if (prev != next)	705	if (prev != next)
679	{	706	{
680	xnext = next;
681
682	if (next->mainstack)	707	if (next->mainstack)
683	{	708	{
		709	LOCK;
684	SAVE (prev, flags);	710	SAVE (prev, flags);
685	LOAD (next);	711	LOAD (next);
		712	UNLOCK;
686		713
687	/* mark this state as in-use */	714	/* mark this state as in-use */
688	next->mainstack = 0;	715	next->mainstack = 0;
689	next->tmps_ix = -2;	716	next->tmps_ix = -2;
690		717
…		…
709	continue_coro, (void *)next,	736	continue_coro, (void *)next,
710	next->stack->sptr, labs (next->stack->ssize));	737	next->stack->sptr, labs (next->stack->ssize));
711	}	738	}
712		739
713	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	740	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		741	prev->cursp = stacklevel;
714	/* don't add any code here */	742	/* don't add any code here */
715	}	743	}
716		744	else
		745	next->cursp = stacklevel;
717	}	746	}
718	else if (next->tmps_ix == -2)	747	else if (next->tmps_ix == -2)
719	croak ("tried to transfer to running coroutine");	748	croak ("tried to transfer to running coroutine");
720	else	749	else
721	{	750	{
		751	LOCK;
722	SAVE (prev, -1); /* first get rid of the old state */	752	SAVE (prev, -1); /* first get rid of the old state */
		753	UNLOCK;
723		754
724	if (flags & TRANSFER_SAVE_CCTXT)	755	if (flags & TRANSFER_SAVE_CCTXT)
725	{	756	{
726	if (!prev->stack)	757	if (!prev->stack)
727	allocate_stack (prev, 0);	758	allocate_stack (prev, 0);
728		759
729	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	760	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
730	{	761	{
		762	PL_top_env = &next->start_env;
		763
731	setup_coro (next);	764	setup_coro (next);
		765	next->cursp = stacklevel;
732		766
733	prev->stack->refcnt++;	767	prev->stack->refcnt++;
734	prev->stack->usecnt++;	768	prev->stack->usecnt++;
735	next->stack = prev->stack;	769	next->stack = prev->stack;
736	next->gencnt = prev->gencnt;	770	next->gencnt = prev->gencnt;
737	}	771	}
738	else	772	else
739	{	773	{
		774	assert (!next->stack);
740	allocate_stack (next, 1);	775	allocate_stack (next, 1);
741	coro_create (&(next->stack->cctx),	776	coro_create (&(next->stack->cctx),
742	setup_coro, (void *)next,	777	setup_coro, (void *)next,
743	next->stack->sptr, labs (next->stack->ssize));	778	next->stack->sptr, labs (next->stack->ssize));
744	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	779	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		780	prev->cursp = stacklevel;
745	/* don't add any code here */	781	/* don't add any code here */
746	}	782	}
747	}	783	}
748	else	784	else
		785	{
749	setup_coro (next);	786	setup_coro (next);
		787	next->cursp = stacklevel;
		788	}
750	}	789	}
751
752	/*
753	* xnext is now either prev or next, depending on wether
754	* we switched the c stack or not. that's why i use a global
755	* variable, that should become thread-specific at one point.
756	*/
757	xnext->cursp = stacklevel;
758	}	790	}
759		791
		792	LOCK;
760	if (coro_mortal)	793	if (coro_mortal)
761	{	794	{
762	SvREFCNT_dec (coro_mortal);	795	SvREFCNT_dec (coro_mortal);
763	coro_mortal = 0;	796	coro_mortal = 0;
764	}	797	}
		798	UNLOCK;
765	}	799	}
766		800
767	#define SV_CORO(sv,func) \	801	#define SV_CORO(sv,func) \
768	do { \	802	do { \
769	if (SvROK (sv)) \	803	if (SvROK (sv)) \
770	sv = SvRV (sv); \	804	sv = SvRV (sv); \
771	\	805	\
772	if (SvTYPE(sv) == SVt_PVHV) \	806	if (SvTYPE (sv) == SVt_PVHV) \
773	{ \	807	{ \
774	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \	808	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
775	\	809	\
776	if (!he) \	810	if (!he) \
777	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \	811	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
778	\	812	\
779	(sv) = SvRV (HeVAL(he)); \	813	(sv) = SvRV (HeVAL(he)); \
780	} \	814	} \
781	\	815	\
782	/* must also be changed inside Coro::Cont::yield */ \	816	/* must also be changed inside Coro::Cont::yield */ \
783	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \	817	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
784	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \	818	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
785	\	819	\
786	} while(0)	820	} while(0)
787		821
788	#define SvSTATE(sv) (struct coro *)SvIV (sv)	822	#define SvSTATE(sv) (struct coro *)SvIV (sv)
…		…
854	api_ready (SV *coro)	888	api_ready (SV *coro)
855	{	889	{
856	if (SvROK (coro))	890	if (SvROK (coro))
857	coro = SvRV (coro);	891	coro = SvRV (coro);
858		892
		893	LOCK;
859	coro_enq (SvREFCNT_inc (coro));	894	coro_enq (SvREFCNT_inc (coro));
		895	UNLOCK;
860	}	896	}
861		897
862	static void	898	static void
863	api_schedule (void)	899	api_schedule (void)
864	{	900	{
865	SV prev, next;	901	SV prev, next;
866		902
		903	LOCK;
		904
867	prev = SvRV (GvSV (coro_current));	905	prev = SvRV (GvSV (coro_current));
868	next = coro_deq (PRIO_MIN);	906	next = coro_deq (PRIO_MIN);
869		907
870	if (!next)	908	if (!next)
871	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	909	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
872		910
		911	/* free this only after the transfer */
873	coro_mortal = prev;	912	coro_mortal = prev;
874	SV_CORO (prev, "Coro::schedule");	913	SV_CORO (prev, "Coro::schedule");
875		914
876	SvRV (GvSV (coro_current)) = next;	915	SvRV (GvSV (coro_current)) = next;
877		916
878	SV_CORO (next, "Coro::schedule");	917	SV_CORO (next, "Coro::schedule");
879		918
		919	UNLOCK;
		920
880	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	921	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
881	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	922	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
882	}	923	}
883		924
884	static void	925	static void
885	api_cede (void)	926	api_cede (void)
886	{	927	{
		928	LOCK;
887	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	929	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		930	UNLOCK;
888		931
889	api_schedule ();	932	api_schedule ();
890	}	933	}
891		934
892	MODULE = Coro::State PACKAGE = Coro::State	935	MODULE = Coro::State PACKAGE = Coro::State
893		936
894	PROTOTYPES: ENABLE	937	PROTOTYPES: ENABLE
895		938
896	BOOT:	939	BOOT:
897	{ /* {} necessary for stoopid perl-5.6.x */	940	{ /* {} necessary for stoopid perl-5.6.x */
		941	#ifdef USE_ITHREADS
		942	MUTEX_INIT (&coro_mutex);
		943	#endif
		944
898	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	945	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
899	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	946	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
900	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	947	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
901		948
902	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	949	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
903	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	950	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
904	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	951	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
905	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	952	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
906
907	if (!padlist_cache)
908	padlist_cache = newHV ();
909		953
910	main_mainstack = PL_mainstack;	954	main_mainstack = PL_mainstack;
911		955
912	coroapi.ver = CORO_API_VERSION;	956	coroapi.ver = CORO_API_VERSION;
913	coroapi.transfer = api_transfer;	957	coroapi.transfer = api_transfer;
…		…
921	Coro__State coro;	965	Coro__State coro;
922		966
923	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	967	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
924	croak ("Coro::State::_newprocess expects an arrayref");	968	croak ("Coro::State::_newprocess expects an arrayref");
925		969
926	New (0, coro, 1, struct coro);	970	Newz (0, coro, 1, struct coro);
927		971
928	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	972	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
929	coro->mainstack = 0; /* actual work is done inside transfer */	973	coro->mainstack = 0; /* actual work is done inside transfer */
930	coro->stack = 0;	974	coro->stack = 0;
		975
		976	/* same as JMPENV_BOOTSTRAP */
		977	/* we might be able to recycle start_env, but safe is safe */
		978	//Zero(&coro->start_env, 1, JMPENV);
		979	coro->start_env.je_ret = -1;
		980	coro->start_env.je_mustcatch = TRUE;
931		981
932	RETVAL = coro;	982	RETVAL = coro;
933	OUTPUT:	983	OUTPUT:
934	RETVAL	984	RETVAL
935		985
…		…
967		1017
968	coro->mainstack = 0;	1018	coro->mainstack = 0;
969	}	1019	}
970		1020
971	deallocate_stack (coro);	1021	deallocate_stack (coro);
972		1022	SvREFCNT_dec (coro->args);
973	Safefree (coro);	1023	Safefree (coro);
974
975	void
976	flush()
977	CODE:
978	#ifdef MAY_FLUSH
979	flush_padlist_cache ();
980	#endif
981		1024
982	void	1025	void
983	_exit(code)	1026	_exit(code)
984	int code	1027	int code
985	PROTOTYPE: $	1028	PROTOTYPE: $
986	CODE:	1029	CODE:
987	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
988	_exit (code);	1030	_exit (code);
989	#else
990	signal (SIGTERM, SIG_DFL);
991	raise (SIGTERM);
992	exit (code);
993	#endif
994		1031
995	MODULE = Coro::State PACKAGE = Coro::Cont	1032	MODULE = Coro::State PACKAGE = Coro::Cont
996		1033
997	# this is slightly dirty (should expose a c-level api)	1034	# this is slightly dirty (should expose a c-level api)
998		1035
…		…
1004	SV *sv;	1041	SV *sv;
1005	AV *defav = GvAV (PL_defgv);	1042	AV *defav = GvAV (PL_defgv);
1006	struct coro prev, next;	1043	struct coro prev, next;
1007		1044
1008	if (!returnstk)	1045	if (!returnstk)
1009	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1046	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
1010		1047
1011	/* set up @_ -- ugly */	1048	/* set up @_ -- ugly */
1012	av_clear (defav);	1049	av_clear (defav);
1013	av_fill (defav, items - 1);	1050	av_fill (defav, items - 1);
1014	while (items--)	1051	while (items--)
…		…
1057	sv_setiv(sv, (IV)&coroapi);	1094	sv_setiv(sv, (IV)&coroapi);
1058	SvREADONLY_on(sv);	1095	SvREADONLY_on(sv);
1059	}	1096	}
1060	}	1097	}
1061		1098
		1099	#if !PERL_MICRO
		1100
1062	void	1101	void
1063	ready(self)	1102	ready(self)
1064	SV * self	1103	SV * self
1065	PROTOTYPE: $	1104	PROTOTYPE: $
1066	CODE:	1105	CODE:
1067	api_ready (self);	1106	api_ready (self);
		1107
		1108	#endif
1068		1109
1069	int	1110	int
1070	nready(...)	1111	nready(...)
1071	PROTOTYPE:	1112	PROTOTYPE:
1072	CODE:	1113	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.39 by root, Sun Nov 25 20:04:05 2001 UTC vs. Revision 1.55 by pcg, Thu Apr 1 02:29:05 2004 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.39 by root, Sun Nov 25 20:04:05 2001 UTC vs.
Revision 1.55 by pcg, Thu Apr 1 02:29:05 2004 UTC