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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC

…		…
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
9	#if USE_VALGRIND	9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>	10	# include <valgrind/valgrind.h>
11	#endif	11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
12		15
13	#define PERL_VERSION_ATLEAST(a,b,c) \	16	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \	17	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \	18	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \	19	&& (PERL_VERSION > (b) \
…		…
98	#else	101	#else
99	# define LOCK (void)0	102	# define LOCK (void)0
100	# define UNLOCK (void)0	103	# define UNLOCK (void)0
101	#endif	104	#endif
102		105
		106	struct io_state
		107	{
		108	int errorno;
		109	I32 laststype;
		110	int laststatval;
		111	Stat_t statcache;
		112	};
		113
103	static struct CoroAPI coroapi;	114	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	115	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	116	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	117	static SV coro_mortal; / will be freed after next transfer */
107		118
		119	static struct coro_cctx *cctx_first;
		120	static int cctx_count, cctx_idle;
		121
108	/* this is a structure representing a c-level coroutine */	122	/* this is a structure representing a c-level coroutine */
109	typedef struct coro_cctx {	123	typedef struct coro_cctx {
110	struct coro_cctx *next;	124	struct coro_cctx *next;
111		125
112	/* the stack */	126	/* the stack */
…		…
116	/* cpu state */	130	/* cpu state */
117	void idle_sp; / sp of top-level transfer/schedule/cede call */	131	void idle_sp; / sp of top-level transfer/schedule/cede call */
118	JMPENV *top_env;	132	JMPENV *top_env;
119	coro_context cctx;	133	coro_context cctx;
120		134
		135	int inuse;
		136
121	#if USE_VALGRIND	137	#if USE_VALGRIND
122	int valgrind_id;	138	int valgrind_id;
123	#endif	139	#endif
124	} coro_cctx;	140	} coro_cctx;
		141
		142	enum {
		143	CF_RUNNING = 0x0001, /* coroutine is running */
		144	CF_READY = 0x0002, /* coroutine is ready */
		145	CF_NEW = 0x0004, /* ahs never been switched to */
		146	};
125		147
126	/* this is a structure representing a perl-level coroutine */	148	/* this is a structure representing a perl-level coroutine */
127	struct coro {	149	struct coro {
128	/* the c coroutine allocated to this perl coroutine, if any */	150	/* the c coroutine allocated to this perl coroutine, if any */
129	coro_cctx *cctx;	151	coro_cctx *cctx;
130		152
131	/* data associated with this coroutine (initial args) */	153	/* data associated with this coroutine (initial args) */
132	AV *args;	154	AV *args;
133	int refcnt;	155	int refcnt;
		156	int flags;
134		157
135	/* optionally saved, might be zero */	158	/* optionally saved, might be zero */
136	AV *defav;	159	AV *defav;
137	SV *defsv;	160	SV *defsv;
138	SV *errsv;	161	SV *errsv;
139		162
140	/* saved global state not related to stacks */	163	#define VAR(name,type) type name;
141	U8 dowarn;	164	# include "state.h"
142	I32 in_eval;	165	#undef VAR
143
144	/* the stacks and related info (callchain etc..) */
145	PERL_SI *curstackinfo;
146	AV *curstack;
147	AV *mainstack;
148	SV **stack_sp;
149	OP *op;
150	SV **curpad;
151	AV *comppad;
152	CV *compcv;
153	SV **stack_base;
154	SV **stack_max;
155	SV **tmps_stack;
156	I32 tmps_floor;
157	I32 tmps_ix;
158	I32 tmps_max;
159	I32 *markstack;
160	I32 *markstack_ptr;
161	I32 *markstack_max;
162	I32 *scopestack;
163	I32 scopestack_ix;
164	I32 scopestack_max;
165	ANY *savestack;
166	I32 savestack_ix;
167	I32 savestack_max;
168	OP **retstack;
169	I32 retstack_ix;
170	I32 retstack_max;
171	PMOP *curpm;
172	COP *curcop;
173		166
174	/* coro process data */	167	/* coro process data */
175	int prio;	168	int prio;
176	};	169	};
177		170
…		…
241		234
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	235	#define PERL_MAGIC_coro PERL_MAGIC_ext
243		236
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	237	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
245		238
		239	#define CORO_MAGIC(cv) \
		240	SvMAGIC (cv) \
		241	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		242	? SvMAGIC (cv) \
		243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		244	: 0
		245
246	/* the next two functions merely cache the padlists */	246	/* the next two functions merely cache the padlists */
247	static void	247	static void
248	get_padlist (CV *cv)	248	get_padlist (CV *cv)
249	{	249	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	250	MAGIC *mg = CORO_MAGIC (cv);
		251	AV *av;
251		252
252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
254	else	255	else
255	{	256	{
256	#if 0	257	#if 0
257	/* this is probably cleaner, but also slower? */	258	/* this is probably cleaner, but also slower? */
258	CV *cp = Perl_cv_clone (cv);	259	CV *cp = Perl_cv_clone (cv);
…		…
266	}	267	}
267		268
268	static void	269	static void
269	put_padlist (CV *cv)	270	put_padlist (CV *cv)
270	{	271	{
271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	272	MAGIC *mg = CORO_MAGIC (cv);
		273	AV *av;
272		274
273	if (!mg)	275	if (!mg)
274	{	276	{
275	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	277	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
276	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	278	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
277	mg->mg_virtual = &vtbl_coro;	279	mg->mg_virtual = &vtbl_coro;
278	mg->mg_obj = (SV *)newAV ();	280	mg->mg_obj = (SV *)newAV ();
279	}	281	}
280		282
281	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	283	av = (AV *)mg->mg_obj;
		284
		285	if (AvFILLp (av) >= AvMAX (av))
		286	av_extend (av, AvMAX (av) + 1);
		287
		288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
282	}	289	}
283		290
284	#define SB do {	291	#define SB do {
285	#define SE } while (0)	292	#define SE } while (0)
286		293
287	#define LOAD(state) load_state((state));	294	#define LOAD(state) load_state ((state))
288	#define SAVE(state,flags) save_state((state),(flags));	295	#define SAVE(state,flags) save_state ((state),(flags))
289		296
290	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	297	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
291		298
292	static void	299	static void
293	load_state(Coro__State c)	300	load_state (Coro__State c)
294	{	301	{
295	PL_dowarn = c->dowarn;	302	#define VAR(name,type) PL_ ## name = c->name;
296	PL_in_eval = c->in_eval;	303	# include "state.h"
297		304	#undef VAR
298	PL_curstackinfo = c->curstackinfo;
299	PL_curstack = c->curstack;
300	PL_mainstack = c->mainstack;
301	PL_stack_sp = c->stack_sp;
302	PL_op = c->op;
303	PL_curpad = c->curpad;
304	PL_comppad = c->comppad;
305	PL_compcv = c->compcv;
306	PL_stack_base = c->stack_base;
307	PL_stack_max = c->stack_max;
308	PL_tmps_stack = c->tmps_stack;
309	PL_tmps_floor = c->tmps_floor;
310	PL_tmps_ix = c->tmps_ix;
311	PL_tmps_max = c->tmps_max;
312	PL_markstack = c->markstack;
313	PL_markstack_ptr = c->markstack_ptr;
314	PL_markstack_max = c->markstack_max;
315	PL_scopestack = c->scopestack;
316	PL_scopestack_ix = c->scopestack_ix;
317	PL_scopestack_max = c->scopestack_max;
318	PL_savestack = c->savestack;
319	PL_savestack_ix = c->savestack_ix;
320	PL_savestack_max = c->savestack_max;
321	#if !PERL_VERSION_ATLEAST (5,9,0)
322	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;
325	#endif
326	PL_curpm = c->curpm;
327	PL_curcop = c->curcop;
328		305
329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
332		309
…		…
335	CV *cv;	312	CV *cv;
336		313
337	/* now do the ugly restore mess */	314	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	315	while ((cv = (CV *)POPs))
339	{	316	{
340	AV padlist = (AV )POPs;
341
342	if (padlist)
343	{
344	put_padlist (cv); /* mark this padlist as available */	317	put_padlist (cv); /* mark this padlist as available */
345	CvPADLIST(cv) = padlist;	318	CvDEPTH (cv) = PTR2IV (POPs);
346	}	319	CvPADLIST (cv) = (AV *)POPs;
347
348	++CvDEPTH(cv);
349	}	320	}
350		321
351	PUTBACK;	322	PUTBACK;
352	}	323	}
353	}	324	}
354		325
355	static void	326	static void
356	save_state(Coro__State c, int flags)	327	save_state (Coro__State c, int flags)
357	{	328	{
358	{	329	{
359	dSP;	330	dSP;
360	I32 cxix = cxstack_ix;	331	I32 cxix = cxstack_ix;
361	PERL_CONTEXT *ccstk = cxstack;	332	PERL_CONTEXT *ccstk = cxstack;
…		…
372	{	343	{
373	while (cxix >= 0)	344	while (cxix >= 0)
374	{	345	{
375	PERL_CONTEXT *cx = &ccstk[cxix--];	346	PERL_CONTEXT *cx = &ccstk[cxix--];
376		347
377	if (CxTYPE(cx) == CXt_SUB)	348	if (CxTYPE (cx) == CXt_SUB)
378	{	349	{
379	CV *cv = cx->blk_sub.cv;	350	CV *cv = cx->blk_sub.cv;
		351
380	if (CvDEPTH(cv))	352	if (CvDEPTH (cv))
381	{	353	{
382	EXTEND (SP, CvDEPTH(cv)*2);	354	EXTEND (SP, 3);
383		355
384	while (--CvDEPTH(cv))
385	{
386	/* this tells the restore code to increment CvDEPTH */
387	PUSHs (Nullsv);
388	PUSHs ((SV *)cv);
389	}
390
391	PUSHs ((SV *)CvPADLIST(cv));	356	PUSHs ((SV *)CvPADLIST (cv));
		357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
392	PUSHs ((SV *)cv);	358	PUSHs ((SV *)cv);
393		359
		360	CvDEPTH (cv) = 0;
394	get_padlist (cv);	361	get_padlist (cv);
395	}	362	}
396	}	363	}
397	#ifdef CXt_FORMAT	364	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)	365	else if (CxTYPE (cx) == CXt_FORMAT)
399	{	366	{
400	/* I never used formats, so how should I know how these are implemented? */	367	/* I never used formats, so how should I know how these are implemented? */
401	/* my bold guess is as a simple, plain sub... */	368	/* my bold guess is as a simple, plain sub... */
402	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	369	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
403	}	370	}
…		…
417		384
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	385	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	386	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
421		388
422	c->dowarn = PL_dowarn;	389	#define VAR(name,type)c->name = PL_ ## name;
423	c->in_eval = PL_in_eval;	390	# include "state.h"
424		391	#undef VAR
425	c->curstackinfo = PL_curstackinfo;
426	c->curstack = PL_curstack;
427	c->mainstack = PL_mainstack;
428	c->stack_sp = PL_stack_sp;
429	c->op = PL_op;
430	c->curpad = PL_curpad;
431	c->comppad = PL_comppad;
432	c->compcv = PL_compcv;
433	c->stack_base = PL_stack_base;
434	c->stack_max = PL_stack_max;
435	c->tmps_stack = PL_tmps_stack;
436	c->tmps_floor = PL_tmps_floor;
437	c->tmps_ix = PL_tmps_ix;
438	c->tmps_max = PL_tmps_max;
439	c->markstack = PL_markstack;
440	c->markstack_ptr = PL_markstack_ptr;
441	c->markstack_max = PL_markstack_max;
442	c->scopestack = PL_scopestack;
443	c->scopestack_ix = PL_scopestack_ix;
444	c->scopestack_max = PL_scopestack_max;
445	c->savestack = PL_savestack;
446	c->savestack_ix = PL_savestack_ix;
447	c->savestack_max = PL_savestack_max;
448	#if !PERL_VERSION_ATLEAST (5,9,0)
449	c->retstack = PL_retstack;
450	c->retstack_ix = PL_retstack_ix;
451	c->retstack_max = PL_retstack_max;
452	#endif
453	c->curpm = PL_curpm;
454	c->curcop = PL_curcop;
455	}	392	}
456		393
457	/*	394	/*
458	* allocate various perl stacks. This is an exact copy	395	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	396	* of perl.c:init_stacks, except that it uses less memory
…		…
461	* not usually need a lot of stackspace.	398	* not usually need a lot of stackspace.
462	*/	399	*/
463	static void	400	static void
464	coro_init_stacks ()	401	coro_init_stacks ()
465	{	402	{
466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
467	PL_curstackinfo->si_type = PERLSI_MAIN;	404	PL_curstackinfo->si_type = PERLSI_MAIN;
468	PL_curstack = PL_curstackinfo->si_stack;	405	PL_curstack = PL_curstackinfo->si_stack;
469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	406	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
470		407
471	PL_stack_base = AvARRAY(PL_curstack);	408	PL_stack_base = AvARRAY(PL_curstack);
472	PL_stack_sp = PL_stack_base;	409	PL_stack_sp = PL_stack_base;
473	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	410	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
474		411
475	New(50,PL_tmps_stack,96,SV*);	412	New(50,PL_tmps_stack,128,SV*);
476	PL_tmps_floor = -1;	413	PL_tmps_floor = -1;
477	PL_tmps_ix = -1;	414	PL_tmps_ix = -1;
478	PL_tmps_max = 96;	415	PL_tmps_max = 128;
479		416
480	New(54,PL_markstack,16,I32);	417	New(54,PL_markstack,32,I32);
481	PL_markstack_ptr = PL_markstack;	418	PL_markstack_ptr = PL_markstack;
482	PL_markstack_max = PL_markstack + 16;	419	PL_markstack_max = PL_markstack + 32;
483		420
484	#ifdef SET_MARK_OFFSET	421	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	422	SET_MARK_OFFSET;
486	#endif	423	#endif
487		424
488	New(54,PL_scopestack,16,I32);	425	New(54,PL_scopestack,32,I32);
489	PL_scopestack_ix = 0;	426	PL_scopestack_ix = 0;
490	PL_scopestack_max = 16;	427	PL_scopestack_max = 32;
491		428
492	New(54,PL_savestack,96,ANY);	429	New(54,PL_savestack,64,ANY);
493	PL_savestack_ix = 0;	430	PL_savestack_ix = 0;
494	PL_savestack_max = 96;	431	PL_savestack_max = 64;
495		432
496	#if !PERL_VERSION_ATLEAST (5,9,0)	433	#if !PERL_VERSION_ATLEAST (5,9,0)
497	New(54,PL_retstack,8,OP*);	434	New(54,PL_retstack,16,OP*);
498	PL_retstack_ix = 0;	435	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	436	PL_retstack_max = 16;
500	#endif	437	#endif
501	}	438	}
502		439
503	/*	440	/*
504	* destroy the stacks, the callchain etc...	441	* destroy the stacks, the callchain etc...
…		…
557	* emulate part of the perl startup here.	494	* emulate part of the perl startup here.
558	*/	495	*/
559		496
560	coro_init_stacks ();	497	coro_init_stacks ();
561		498
562	PL_curcop = 0;	499	PL_curcop = &PL_compiling;
563	PL_in_eval = 0;	500	PL_in_eval = EVAL_NULL;
564	PL_curpm = 0;	501	PL_curpm = 0;
		502	PL_localizing = 0;
		503	PL_dirty = 0;
		504	PL_restartop = 0;
565		505
566	{	506	{
567	dSP;	507	dSP;
568	LOGOP myop;	508	LOGOP myop;
569		509
570	/* I have no idea why this is needed, but it is */
571	PUSHMARK (SP);
572
573	SvREFCNT_dec (GvAV (PL_defgv));	510	SvREFCNT_dec (GvAV (PL_defgv));
574	GvAV (PL_defgv) = coro->args; coro->args = 0;	511	GvAV (PL_defgv) = coro->args; coro->args = 0;
575		512
576	Zero (&myop, 1, LOGOP);	513	Zero (&myop, 1, LOGOP);
577	myop.op_next = Nullop;	514	myop.op_next = Nullop;
578	myop.op_flags = OPf_WANT_VOID;	515	myop.op_flags = OPf_WANT_VOID;
579		516
		517	PUSHMARK (SP);
		518	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		519	PUTBACK;
580	PL_op = (OP *)&myop;	520	PL_op = (OP *)&myop;
581
582	PUSHMARK (SP);
583	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
584	PUTBACK;
585	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	521	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
586	SPAGAIN;	522	SPAGAIN;
587
588	ENTER; /* necessary e.g. for dounwind */
589	}	523	}
		524
		525	ENTER; /* necessary e.g. for dounwind */
590	}	526	}
591		527
592	static void	528	static void
593	free_coro_mortal ()	529	free_coro_mortal ()
594	{	530	{
…		…
597	SvREFCNT_dec (coro_mortal);	533	SvREFCNT_dec (coro_mortal);
598	coro_mortal = 0;	534	coro_mortal = 0;
599	}	535	}
600	}	536	}
601		537
		538	/* inject a fake call to Coro::State::_cctx_init into the execution */
602	static void NOINLINE	539	static void NOINLINE
603	prepare_cctx (coro_cctx *cctx)	540	prepare_cctx (coro_cctx *cctx)
604	{	541	{
605	dSP;	542	dSP;
606	LOGOP myop;	543	LOGOP myop;
607		544
608	Zero (&myop, 1, LOGOP);	545	Zero (&myop, 1, LOGOP);
609	myop.op_next = PL_op;	546	myop.op_next = PL_op;
610	myop.op_flags = OPf_WANT_VOID;	547	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
611
612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
613		548
614	PUSHMARK (SP);	549	PUSHMARK (SP);
		550	EXTEND (SP, 2);
		551	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	552	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
616	PUTBACK;	553	PUTBACK;
		554	PL_op = (OP *)&myop;
617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	555	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
618	SPAGAIN;	556	SPAGAIN;
619	}	557	}
620		558
621	static void	559	static void
622	coro_run (void *arg)	560	coro_run (void *arg)
623	{	561	{
624	/* coro_run is the alternative epilogue of transfer() */	562	/* coro_run is the alternative tail of transfer(), so unlock here. */
625	UNLOCK;	563	UNLOCK;
626		564
627	/*	565	/*
628	* this is a _very_ stripped down perl interpreter ;)	566	* this is a _very_ stripped down perl interpreter ;)
629	*/	567	*/
630	PL_top_env = &PL_start_env;	568	PL_top_env = &PL_start_env;
		569
631	/* inject call to cctx_init */	570	/* inject call to cctx_init */
632	prepare_cctx ((coro_cctx *)arg);	571	prepare_cctx ((coro_cctx *)arg);
633		572
634	/* somebody will hit me for both perl_run and PL_restartop */	573	/* somebody will hit me for both perl_run and PL_restartop */
		574	PL_restartop = PL_op;
635	perl_run (PL_curinterp);	575	perl_run (PL_curinterp);
636		576
637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	577	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
638	abort ();	578	abort ();
639	}	579	}
…		…
641	static coro_cctx *	581	static coro_cctx *
642	cctx_new ()	582	cctx_new ()
643	{	583	{
644	coro_cctx *cctx;	584	coro_cctx *cctx;
645		585
		586	++cctx_count;
		587
646	New (0, cctx, 1, coro_cctx);	588	New (0, cctx, 1, coro_cctx);
647		589
648	#if HAVE_MMAP	590	#if HAVE_MMAP
649		591
650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
651	/* mmap suppsedly does allocate-on-write for us */	593	/* mmap supposedly does allocate-on-write for us */
652	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	594	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
653		595
654	if (cctx->sptr == (void *)-1)	596	if (cctx->sptr == (void *)-1)
655	{	597	{
656	perror ("FATAL: unable to mmap stack for coroutine");	598	perror ("FATAL: unable to mmap stack for coroutine");
…		…
685		627
686	return cctx;	628	return cctx;
687	}	629	}
688		630
689	static void	631	static void
690	cctx_free (coro_cctx *cctx)	632	cctx_destroy (coro_cctx *cctx)
691	{	633	{
692	if (!cctx)	634	if (!cctx)
693	return;	635	return;
		636
		637	--cctx_count;
694		638
695	#if USE_VALGRIND	639	#if USE_VALGRIND
696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	640	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
697	#endif	641	#endif
698		642
…		…
703	#endif	647	#endif
704		648
705	Safefree (cctx);	649	Safefree (cctx);
706	}	650	}
707		651
708	static coro_cctx *cctx_first;
709	static int cctx_count, cctx_idle;
710
711	static coro_cctx *	652	static coro_cctx *
712	cctx_get ()	653	cctx_get ()
713	{	654	{
714	coro_cctx *cctx;	655	coro_cctx *cctx;
715		656
716	if (cctx_first)	657	if (cctx_first)
717	{	658	{
718	--cctx_idle;
719	cctx = cctx_first;	659	cctx = cctx_first;
720	cctx_first = cctx->next;	660	cctx_first = cctx->next;
		661	--cctx_idle;
721	}	662	}
722	else	663	else
723	{	664	{
724	++cctx_count;
725	cctx = cctx_new ();	665	cctx = cctx_new ();
726	PL_op = PL_op->op_next;	666	PL_op = PL_op->op_next;
727	}	667	}
728		668
729	return cctx;	669	return cctx;
730	}	670	}
731		671
732	static void	672	static void
733	cctx_put (coro_cctx *cctx)	673	cctx_put (coro_cctx *cctx)
734	{	674	{
		675	/* free another cctx if overlimit */
		676	if (cctx_idle >= MAX_IDLE_CCTX)
		677	{
		678	coro_cctx *first = cctx_first;
		679	cctx_first = first->next;
		680	--cctx_idle;
		681
		682	assert (!first->inuse);
		683	cctx_destroy (first);
		684	}
		685
735	++cctx_idle;	686	++cctx_idle;
736	cctx->next = cctx_first;	687	cctx->next = cctx_first;
737	cctx_first = cctx;	688	cctx_first = cctx;
738	}	689	}
739		690
…		…
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
749	else if (prev != next)	700	else if (prev != next)
750	{	701	{
751	coro_cctx *prev__cctx;	702	coro_cctx *prev__cctx;
752		703
		704	if (prev->flags & CF_NEW)
		705	{
		706	/* create a new empty context */
		707	Newz (0, prev->cctx, 1, coro_cctx);
		708	prev->cctx->inuse = 1;
		709	prev->flags &= ~CF_NEW;
		710	prev->flags \|= CF_RUNNING;
		711	}
		712
		713	/TODO: must not croak here /
		714	if (!prev->flags & CF_RUNNING)
		715	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		716
		717	if (next->flags & CF_RUNNING)
		718	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		719
		720	prev->flags &= ~CF_RUNNING;
		721	next->flags \|= CF_RUNNING;
		722
753	LOCK;	723	LOCK;
754		724
755	if (next->mainstack)	725	if (next->flags & CF_NEW)
		726	{
		727	/* need to start coroutine */
		728	next->flags &= ~CF_NEW;
		729	/* first get rid of the old state */
		730	SAVE (prev, -1);
		731	/* setup coroutine call */
		732	setup_coro (next);
		733	/* need a new stack */
		734	assert (!next->stack);
		735	}
		736	else
756	{	737	{
757	/* coroutine already started */	738	/* coroutine already started */
758	SAVE (prev, flags);	739	SAVE (prev, flags);
759	LOAD (next);	740	LOAD (next);
760	}	741	}
761	else
762	{
763	/* need to start coroutine */
764	/* first get rid of the old state */
765	SAVE (prev, -1);
766	/* setup coroutine call */
767	setup_coro (next);
768	/* need a stack */
769	next->cctx = 0;
770	}
771
772	if (!prev->cctx)
773	/* create a new empty context */
774	Newz (0, prev->cctx, 1, coro_cctx);
775		742
776	prev__cctx = prev->cctx;	743	prev__cctx = prev->cctx;
777		744
778	/* possibly "free" the cctx */	745	/* possibly "free" the cctx */
779	if (prev__cctx->idle_sp == STACKLEVEL)	746	if (prev__cctx->idle_sp == STACKLEVEL)
780	{	747	{
		748	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		749	assert (PL_top_env == prev__cctx->top_env);
		750
		751	prev->cctx = 0;
		752
781	cctx_put (prev__cctx);	753	cctx_put (prev__cctx);
782	prev->cctx = 0;	754	prev__cctx->inuse = 0;
783	}	755	}
784		756
785	if (!next->cctx)	757	if (!next->cctx)
		758	{
786	next->cctx = cctx_get ();	759	next->cctx = cctx_get ();
		760	assert (!next->cctx->inuse);
		761	next->cctx->inuse = 1;
		762	}
787		763
788	if (prev__cctx != next->cctx)	764	if (prev__cctx != next->cctx)
789	{	765	{
790	prev__cctx->top_env = PL_top_env;	766	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	767	PL_top_env = next->cctx->top_env;
…		…
814		790
815	if (coro->mainstack && coro->mainstack != main_mainstack)	791	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	792	{
817	struct coro temp;	793	struct coro temp;
818		794
		795	if (coro->flags & CF_RUNNING)
		796	croak ("FATAL: tried to destroy currently running coroutine");
		797
819	SAVE ((&temp), TRANSFER_SAVE_ALL);	798	SAVE ((&temp), TRANSFER_SAVE_ALL);
820	LOAD (coro);	799	LOAD (coro);
821		800
822	coro_destroy_stacks ();	801	coro_destroy_stacks ();
823		802
824	LOAD ((&temp)); /* this will get rid of defsv etc.. */	803	LOAD ((&temp)); /* this will get rid of defsv etc.. */
825		804
826	coro->mainstack = 0;	805	coro->mainstack = 0;
827	}	806	}
828		807
829	cctx_free (coro->cctx);	808	cctx_destroy (coro->cctx);
830	SvREFCNT_dec (coro->args);	809	SvREFCNT_dec (coro->args);
831	Safefree (coro);	810	Safefree (coro);
832	}	811	}
833		812
834	static int	813	static int
…		…
894	}	873	}
895		874
896	static void	875	static void
897	api_transfer (SV prev, SV next, int flags)	876	api_transfer (SV prev, SV next, int flags)
898	{	877	{
899	dTHX;
900	struct transfer_args ta;	878	struct transfer_args ta;
901		879
902	prepare_transfer (&ta, prev, next, flags);	880	prepare_transfer (&ta, prev, next, flags);
903	TRANSFER (ta);	881	TRANSFER (ta);
904	}	882	}
…		…
911	#define PRIO_LOW -1	889	#define PRIO_LOW -1
912	#define PRIO_IDLE -3	890	#define PRIO_IDLE -3
913	#define PRIO_MIN -4	891	#define PRIO_MIN -4
914		892
915	/* for Coro.pm */	893	/* for Coro.pm */
916	static GV coro_current, coro_idle;	894	static SV *coro_current;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;	896	static int coro_nready;
919		897
920	static void	898	static void
921	coro_enq (SV *sv)	899	coro_enq (SV *coro_sv)
922	{	900	{
923	int prio;
924
925	if (SvTYPE (sv) != SVt_PVHV)
926	croak ("Coro::ready tried to enqueue something that is not a coroutine");
927
928	prio = SvSTATE (sv)->prio;
929
930	av_push (coro_ready [prio - PRIO_MIN], sv);	901	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
931	coro_nready++;	902	coro_nready++;
932	}	903	}
933		904
934	static SV *	905	static SV *
935	coro_deq (int min_prio)	906	coro_deq (int min_prio)
…		…
948	}	919	}
949		920
950	return 0;	921	return 0;
951	}	922	}
952		923
953	static void	924	static int
954	api_ready (SV *coro)	925	api_ready (SV *coro_sv)
955	{	926	{
956	dTHX;	927	struct coro *coro;
957		928
958	if (SvROK (coro))	929	if (SvROK (coro_sv))
959	coro = SvRV (coro);	930	coro_sv = SvRV (coro_sv);
		931
		932	coro = SvSTATE (coro_sv);
		933
		934	if (coro->flags & CF_READY)
		935	return 0;
		936
		937	#if 0 /* this is actually harmless */
		938	if (coro->flags & CF_RUNNING)
		939	croak ("Coro::ready called on currently running coroutine");
		940	#endif
		941
		942	coro->flags \|= CF_READY;
960		943
961	LOCK;	944	LOCK;
962	coro_enq (SvREFCNT_inc (coro));	945	coro_enq (SvREFCNT_inc (coro_sv));
963	UNLOCK;	946	UNLOCK;
		947
		948	return 1;
		949	}
		950
		951	static int
		952	api_is_ready (SV *coro_sv)
		953	{
		954	return !!SvSTATE (coro_sv)->flags & CF_READY;
964	}	955	}
965		956
966	static void	957	static void
967	prepare_schedule (struct transfer_args *ta)	958	prepare_schedule (struct transfer_args *ta)
968	{	959	{
969	SV current, prev, *next;	960	SV prev, next;
970
971	current = GvSV (coro_current);
972		961
973	for (;;)	962	for (;;)
974	{	963	{
975	LOCK;	964	LOCK;
976	next = coro_deq (PRIO_MIN);	965	next = coro_deq (PRIO_MIN);
…		…
985	ENTER;	974	ENTER;
986	SAVETMPS;	975	SAVETMPS;
987		976
988	PUSHMARK (SP);	977	PUSHMARK (SP);
989	PUTBACK;	978	PUTBACK;
990	call_sv (GvSV (coro_idle), G_DISCARD);	979	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
991		980
992	FREETMPS;	981	FREETMPS;
993	LEAVE;	982	LEAVE;
994	}	983	}
995	}	984	}
996		985
997	prev = SvRV (current);	986	prev = SvRV (coro_current);
998	SvRV (current) = next;	987	SvRV_set (coro_current, next);
999		988
1000	/* free this only after the transfer */	989	/* free this only after the transfer */
1001	LOCK;	990	LOCK;
1002	free_coro_mortal ();	991	free_coro_mortal ();
1003	UNLOCK;	992	UNLOCK;
1004	coro_mortal = prev;	993	coro_mortal = prev;
1005		994
		995	assert (!SvROK(prev));//D
		996	assert (!SvROK(next));//D
		997
1006	ta->prev = SvSTATE (prev);	998	ta->prev = SvSTATE (prev);
1007	ta->next = SvSTATE (next);	999	ta->next = SvSTATE (next);
1008	ta->flags = TRANSFER_SAVE_ALL;	1000	ta->flags = TRANSFER_SAVE_ALL;
		1001
		1002	assert (ta->flags & CF_READY);
		1003	ta->next->flags &= ~CF_READY;
1009	}	1004	}
1010		1005
1011	static void	1006	static void
1012	prepare_cede (struct transfer_args *ta)	1007	prepare_cede (struct transfer_args *ta)
1013	{	1008	{
1014	LOCK;	1009	api_ready (coro_current);
1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1016	UNLOCK;
1017		1010
1018	prepare_schedule (ta);	1011	prepare_schedule (ta);
1019	}	1012	}
1020		1013
1021	static void	1014	static void
1022	api_schedule (void)	1015	api_schedule (void)
1023	{	1016	{
1024	dTHX;
1025	struct transfer_args ta;	1017	struct transfer_args ta;
1026		1018
1027	prepare_schedule (&ta);	1019	prepare_schedule (&ta);
1028	TRANSFER (ta);	1020	TRANSFER (ta);
1029	}	1021	}
1030		1022
1031	static void	1023	static void
1032	api_cede (void)	1024	api_cede (void)
1033	{	1025	{
1034	dTHX;
1035	struct transfer_args ta;	1026	struct transfer_args ta;
1036		1027
1037	prepare_cede (&ta);	1028	prepare_cede (&ta);
1038	TRANSFER (ta);	1029	TRANSFER (ta);
1039	}	1030	}
…		…
1071	HV *hv;	1062	HV *hv;
1072	int i;	1063	int i;
1073		1064
1074	Newz (0, coro, 1, struct coro);	1065	Newz (0, coro, 1, struct coro);
1075	coro->args = newAV ();	1066	coro->args = newAV ();
		1067	coro->flags = CF_NEW;
1076		1068
1077	hv = newHV ();	1069	hv = newHV ();
1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1070	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1079	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1071	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1080		1072
…		…
1088	_set_stacklevel (...)	1080	_set_stacklevel (...)
1089	ALIAS:	1081	ALIAS:
1090	Coro::State::transfer = 1	1082	Coro::State::transfer = 1
1091	Coro::schedule = 2	1083	Coro::schedule = 2
1092	Coro::cede = 3	1084	Coro::cede = 3
1093	Coro::Cont::yield = 4
1094	CODE:	1085	CODE:
1095	{	1086	{
1096	struct transfer_args ta;	1087	struct transfer_args ta;
1097		1088
1098	switch (ix)	1089	switch (ix)
…		…
1103	ta.flags = TRANSFER_SET_STACKLEVEL;	1094	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1095	break;
1105		1096
1106	case 1:	1097	case 1:
1107	if (items != 3)	1098	if (items != 3)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
1109		1100
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1111	break;	1102	break;
1112		1103
1113	case 2:	1104	case 2:
…		…
1115	break;	1106	break;
1116		1107
1117	case 3:	1108	case 3:
1118	prepare_cede (&ta);	1109	prepare_cede (&ta);
1119	break;	1110	break;
1120
1121	case 4:
1122	{
1123	SV *yieldstack;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;
1146
1147	}	1111	}
1148		1112
1149	TRANSFER (ta);	1113	TRANSFER (ta);
1150	}	1114	}
1151		1115
…		…
1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1159	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1160	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1161	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1162	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1199		1163
1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1164	coro_current = get_sv ("Coro::current", FALSE);
1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1165	SvREADONLY_on (coro_current);
1202		1166
1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1167	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1204	coro_ready[i] = newAV ();	1168	coro_ready[i] = newAV ();
1205		1169
1206	{	1170	{
1207	SV *sv = perl_get_sv("Coro::API", 1);	1171	SV *sv = perl_get_sv("Coro::API", 1);
1208		1172
1209	coroapi.schedule = api_schedule;	1173	coroapi.schedule = api_schedule;
1210	coroapi.cede = api_cede;	1174	coroapi.cede = api_cede;
1211	coroapi.ready = api_ready;	1175	coroapi.ready = api_ready;
		1176	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1177	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1178	coroapi.current = coro_current;
1214		1179
1215	GCoroAPI = &coroapi;	1180	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1181	sv_setiv (sv, (IV)&coroapi);
…		…
1236		1201
1237	coro->prio = newprio;	1202	coro->prio = newprio;
1238	}	1203	}
1239	}	1204	}
1240		1205
1241	void	1206	SV *
1242	ready (SV *self)	1207	ready (SV *self)
1243	PROTOTYPE: $	1208	PROTOTYPE: $
1244	CODE:	1209	CODE:
1245	api_ready (self);	1210	RETVAL = boolSV (api_ready (self));
		1211	OUTPUT:
		1212	RETVAL
		1213
		1214	SV *
		1215	is_ready (SV *self)
		1216	PROTOTYPE: $
		1217	CODE:
		1218	RETVAL = boolSV (api_is_ready (self));
		1219	OUTPUT:
		1220	RETVAL
1246		1221
1247	int	1222	int
1248	nready (...)	1223	nready (...)
1249	PROTOTYPE:	1224	PROTOTYPE:
1250	CODE:	1225	CODE:
1251	RETVAL = coro_nready;	1226	RETVAL = coro_nready;
1252	OUTPUT:	1227	OUTPUT:
1253	RETVAL	1228	RETVAL
1254		1229
		1230	void
		1231	_set_current (SV *current)
		1232	PROTOTYPE: $
		1233	CODE:
		1234	SvREFCNT_dec (SvRV (coro_current));
		1235	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1236
1255	MODULE = Coro::State PACKAGE = Coro::AIO	1237	MODULE = Coro::State PACKAGE = Coro::AIO
1256		1238
1257	SV *	1239	SV *
1258	_get_state ()	1240	_get_state ()
1259	CODE:	1241	CODE:
1260	{	1242	{
1261	struct {	1243	struct io_state *data;
1262	int errorno;
1263	int laststype;
1264	int laststatval;
1265	Stat_t statcache;
1266	} data;
1267		1244
		1245	RETVAL = newSV (sizeof (struct io_state));
		1246	data = (struct io_state *)SvPVX (RETVAL);
		1247	SvCUR_set (RETVAL, sizeof (struct io_state));
		1248	SvPOK_only (RETVAL);
		1249
1268	data.errorno = errno;	1250	data->errorno = errno;
1269	data.laststype = PL_laststype;	1251	data->laststype = PL_laststype;
1270	data.laststatval = PL_laststatval;	1252	data->laststatval = PL_laststatval;
1271	data.statcache = PL_statcache;	1253	data->statcache = PL_statcache;
1272
1273	RETVAL = newSVpvn ((char *)&data, sizeof data);
1274	}	1254	}
1275	OUTPUT:	1255	OUTPUT:
1276	RETVAL	1256	RETVAL
1277		1257
1278	void	1258	void
1279	_set_state (char *data_)	1259	_set_state (char *data_)
1280	PROTOTYPE: $	1260	PROTOTYPE: $
1281	CODE:	1261	CODE:
1282	{	1262	{
1283	struct {	1263	struct io_state data = (void )data_;
1284	int errorno;
1285	int laststype;
1286	int laststatval;
1287	Stat_t statcache;
1288	} data = (void )data_;
1289		1264
1290	errno = data->errorno;	1265	errno = data->errorno;
1291	PL_laststype = data->laststype;	1266	PL_laststype = data->laststype;
1292	PL_laststatval = data->laststatval;	1267	PL_laststatval = data->laststatval;
1293	PL_statcache = data->statcache;	1268	PL_statcache = data->statcache;
1294	}	1269	}
		1270

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Comparing Coro/Coro/State.xs (file contents): Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs. Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC