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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.104 by root, Mon Nov 27 01:51:02 2006 UTC vs.
Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC

…		…
62	# ifndef PAGESIZE	62	# ifndef PAGESIZE
63	# define PAGESIZE pagesize	63	# define PAGESIZE pagesize
64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
65	static long pagesize;	65	static long pagesize;
66	# else	66	# else
67	# define BOOT_PAGESIZE	67	# define BOOT_PAGESIZE (void)0
68	# endif	68	# endif
		69	#else
		70	# define PAGESIZE 0
		71	# define BOOT_PAGESIZE (void)0
69	#endif	72	#endif
70		73
71	/* The next macro should declare a variable stacklevel that contains and approximation	74	/* The next macro should declare a variable stacklevel that contains and approximation
72	* to the current C stack pointer. Its property is that it changes with each call	75	* to the current C stack pointer. Its property is that it changes with each call
73	* and should be unique. */	76	* and should be unique. */
…		…
100	static struct CoroAPI coroapi;	103	static struct CoroAPI coroapi;
101	static AV main_mainstack; / used to differentiate between $main and others */	104	static AV main_mainstack; / used to differentiate between $main and others */
102	static HV coro_state_stash, coro_stash;	105	static HV coro_state_stash, coro_stash;
103	static SV coro_mortal; / will be freed after next transfer */	106	static SV coro_mortal; / will be freed after next transfer */
104		107
		108	static struct coro_cctx *cctx_first;
		109	static int cctx_count, cctx_idle;
		110
105	/* this is a structure representing a c-level coroutine */	111	/* this is a structure representing a c-level coroutine */
106	typedef struct coro_stack {	112	typedef struct coro_cctx {
107	struct coro_stack *next;	113	struct coro_cctx *next;
108		114
109	/* the stack */	115	/* the stack */
110	void *sptr;	116	void *sptr;
111	long ssize; /* positive == mmap, otherwise malloc */	117	long ssize; /* positive == mmap, otherwise malloc */
112		118
113	/* cpu state */	119	/* cpu state */
114	void idle_sp; / sp of top-level transfer/schedule/cede call */	120	void idle_sp; / sp of top-level transfer/schedule/cede call */
115	JMPENV *top_env;	121	JMPENV *top_env;
116	coro_context cctx;	122	coro_context cctx;
117		123
		124	int inuse;
		125
118	#if USE_VALGRIND	126	#if USE_VALGRIND
119	int valgrind_id;	127	int valgrind_id;
120	#endif	128	#endif
121	} coro_stack;	129	} coro_cctx;
		130
		131	enum {
		132	CF_RUNNING, /* coroutine is running */
		133	CF_READY, /* coroutine is ready */
		134	};
122		135
123	/* this is a structure representing a perl-level coroutine */	136	/* this is a structure representing a perl-level coroutine */
124	struct coro {	137	struct coro {
125	/* the c coroutine allocated to this perl coroutine, if any */	138	/* the c coroutine allocated to this perl coroutine, if any */
126	coro_stack *stack;	139	coro_cctx *cctx;
127		140
128	/* data associated with this coroutine (initial args) */	141	/* data associated with this coroutine (initial args) */
129	AV *args;	142	AV *args;
130	int refcnt;	143	int refcnt;
		144	int flags;
131		145
132	/* optionally saved, might be zero */	146	/* optionally saved, might be zero */
133	AV *defav;	147	AV *defav;
134	SV *defsv;	148	SV *defsv;
135	SV *errsv;	149	SV *errsv;
136		150
137	/* saved global state not related to stacks */	151	#define VAR(name,type) type name;
138	U8 dowarn;	152	# include "state.h"
139	I32 in_eval;	153	#undef VAR
140
141	/* the stacks and related info (callchain etc..) */
142	PERL_SI *curstackinfo;
143	AV *curstack;
144	AV *mainstack;
145	SV **stack_sp;
146	OP *op;
147	SV **curpad;
148	AV *comppad;
149	CV *compcv;
150	SV **stack_base;
151	SV **stack_max;
152	SV **tmps_stack;
153	I32 tmps_floor;
154	I32 tmps_ix;
155	I32 tmps_max;
156	I32 *markstack;
157	I32 *markstack_ptr;
158	I32 *markstack_max;
159	I32 *scopestack;
160	I32 scopestack_ix;
161	I32 scopestack_max;
162	ANY *savestack;
163	I32 savestack_ix;
164	I32 savestack_max;
165	OP **retstack;
166	I32 retstack_ix;
167	I32 retstack_max;
168	PMOP *curpm;
169	COP *curcop;
170		154
171	/* coro process data */	155	/* coro process data */
172	int prio;	156	int prio;
173	};	157	};
174		158
…		…
238		222
239	#define PERL_MAGIC_coro PERL_MAGIC_ext	223	#define PERL_MAGIC_coro PERL_MAGIC_ext
240		224
241	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
242		226
		227	#define CORO_MAGIC(cv) \
		228	SvMAGIC (cv) \
		229	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		230	? SvMAGIC (cv) \
		231	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		232	: 0
		233
243	/* the next two functions merely cache the padlists */	234	/* the next two functions merely cache the padlists */
244	static void	235	static void
245	get_padlist (CV *cv)	236	get_padlist (CV *cv)
246	{	237	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	238	MAGIC *mg = CORO_MAGIC (cv);
		239	AV *av;
248		240
249	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
250	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
251	else	243	else
252	{	244	{
253	#if 0	245	#if 0
254	/* this is probably cleaner, but also slower? */	246	/* this is probably cleaner, but also slower? */
255	CV *cp = Perl_cv_clone (cv);	247	CV *cp = Perl_cv_clone (cv);
…		…
263	}	255	}
264		256
265	static void	257	static void
266	put_padlist (CV *cv)	258	put_padlist (CV *cv)
267	{	259	{
268	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	260	MAGIC *mg = CORO_MAGIC (cv);
		261	AV *av;
269		262
270	if (!mg)	263	if (!mg)
271	{	264	{
272	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	265	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
273	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	266	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
274	mg->mg_virtual = &vtbl_coro;	267	mg->mg_virtual = &vtbl_coro;
275	mg->mg_obj = (SV *)newAV ();	268	mg->mg_obj = (SV *)newAV ();
276	}	269	}
277		270
278	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	271	av = (AV *)mg->mg_obj;
		272
		273	if (AvFILLp (av) >= AvMAX (av))
		274	av_extend (av, AvMAX (av) + 1);
		275
		276	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
279	}	277	}
280		278
281	#define SB do {	279	#define SB do {
282	#define SE } while (0)	280	#define SE } while (0)
283		281
…		…
287	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	285	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
288		286
289	static void	287	static void
290	load_state(Coro__State c)	288	load_state(Coro__State c)
291	{	289	{
292	PL_dowarn = c->dowarn;	290	#define VAR(name,type) PL_ ## name = c->name;
293	PL_in_eval = c->in_eval;	291	# include "state.h"
294		292	#undef VAR
295	PL_curstackinfo = c->curstackinfo;
296	PL_curstack = c->curstack;
297	PL_mainstack = c->mainstack;
298	PL_stack_sp = c->stack_sp;
299	PL_op = c->op;
300	PL_curpad = c->curpad;
301	PL_comppad = c->comppad;
302	PL_compcv = c->compcv;
303	PL_stack_base = c->stack_base;
304	PL_stack_max = c->stack_max;
305	PL_tmps_stack = c->tmps_stack;
306	PL_tmps_floor = c->tmps_floor;
307	PL_tmps_ix = c->tmps_ix;
308	PL_tmps_max = c->tmps_max;
309	PL_markstack = c->markstack;
310	PL_markstack_ptr = c->markstack_ptr;
311	PL_markstack_max = c->markstack_max;
312	PL_scopestack = c->scopestack;
313	PL_scopestack_ix = c->scopestack_ix;
314	PL_scopestack_max = c->scopestack_max;
315	PL_savestack = c->savestack;
316	PL_savestack_ix = c->savestack_ix;
317	PL_savestack_max = c->savestack_max;
318	#if !PERL_VERSION_ATLEAST (5,9,0)
319	PL_retstack = c->retstack;
320	PL_retstack_ix = c->retstack_ix;
321	PL_retstack_max = c->retstack_max;
322	#endif
323	PL_curpm = c->curpm;
324	PL_curcop = c->curcop;
325		293
326	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
327	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
328	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	296	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
329		297
…		…
332	CV *cv;	300	CV *cv;
333		301
334	/* now do the ugly restore mess */	302	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	303	while ((cv = (CV *)POPs))
336	{	304	{
337	AV padlist = (AV )POPs;
338
339	if (padlist)
340	{
341	put_padlist (cv); /* mark this padlist as available */	305	put_padlist (cv); /* mark this padlist as available */
342	CvPADLIST(cv) = padlist;	306	CvDEPTH (cv) = PTR2IV (POPs);
343	}	307	CvPADLIST (cv) = (AV *)POPs;
344
345	++CvDEPTH(cv);
346	}	308	}
347		309
348	PUTBACK;	310	PUTBACK;
349	}	311	}
350	}	312	}
…		…
372	PERL_CONTEXT *cx = &ccstk[cxix--];	334	PERL_CONTEXT *cx = &ccstk[cxix--];
373		335
374	if (CxTYPE(cx) == CXt_SUB)	336	if (CxTYPE(cx) == CXt_SUB)
375	{	337	{
376	CV *cv = cx->blk_sub.cv;	338	CV *cv = cx->blk_sub.cv;
		339
377	if (CvDEPTH(cv))	340	if (CvDEPTH (cv))
378	{	341	{
379	EXTEND (SP, CvDEPTH(cv)*2);	342	EXTEND (SP, 3);
380
381	while (--CvDEPTH(cv))
382	{
383	/* this tells the restore code to increment CvDEPTH */
384	PUSHs (Nullsv);
385	PUSHs ((SV *)cv);
386	}
387		343
388	PUSHs ((SV *)CvPADLIST(cv));	344	PUSHs ((SV *)CvPADLIST(cv));
		345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
389	PUSHs ((SV *)cv);	346	PUSHs ((SV *)cv);
390		347
		348	CvDEPTH (cv) = 0;
391	get_padlist (cv);	349	get_padlist (cv);
392	}	350	}
393	}	351	}
394	#ifdef CXt_FORMAT	352	#ifdef CXt_FORMAT
395	else if (CxTYPE(cx) == CXt_FORMAT)	353	else if (CxTYPE(cx) == CXt_FORMAT)
…		…
414		372
415	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	373	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
416	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	374	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
417	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	375	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
418		376
419	c->dowarn = PL_dowarn;	377	#define VAR(name,type)c->name = PL_ ## name;
420	c->in_eval = PL_in_eval;	378	# include "state.h"
421		379	#undef VAR
422	c->curstackinfo = PL_curstackinfo;
423	c->curstack = PL_curstack;
424	c->mainstack = PL_mainstack;
425	c->stack_sp = PL_stack_sp;
426	c->op = PL_op;
427	c->curpad = PL_curpad;
428	c->comppad = PL_comppad;
429	c->compcv = PL_compcv;
430	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;
435	c->tmps_max = PL_tmps_max;
436	c->markstack = PL_markstack;
437	c->markstack_ptr = PL_markstack_ptr;
438	c->markstack_max = PL_markstack_max;
439	c->scopestack = PL_scopestack;
440	c->scopestack_ix = PL_scopestack_ix;
441	c->scopestack_max = PL_scopestack_max;
442	c->savestack = PL_savestack;
443	c->savestack_ix = PL_savestack_ix;
444	c->savestack_max = PL_savestack_max;
445	#if !PERL_VERSION_ATLEAST (5,9,0)
446	c->retstack = PL_retstack;
447	c->retstack_ix = PL_retstack_ix;
448	c->retstack_max = PL_retstack_max;
449	#endif
450	c->curpm = PL_curpm;
451	c->curcop = PL_curcop;
452	}	380	}
453		381
454	/*	382	/*
455	* allocate various perl stacks. This is an exact copy	383	* allocate various perl stacks. This is an exact copy
456	* of perl.c:init_stacks, except that it uses less memory	384	* of perl.c:init_stacks, except that it uses less memory
…		…
499		427
500	/*	428	/*
501	* destroy the stacks, the callchain etc...	429	* destroy the stacks, the callchain etc...
502	*/	430	*/
503	static void	431	static void
504	coro_destroy_stacks()	432	coro_destroy_stacks ()
505	{	433	{
506	if (!IN_DESTRUCT)	434	if (!IN_DESTRUCT)
507	{	435	{
508	/* is this ugly, I ask? */	436	/* is this ugly, I ask? */
509	LEAVE_SCOPE (0);	437	LEAVE_SCOPE (0);
…		…
575	myop.op_flags = OPf_WANT_VOID;	503	myop.op_flags = OPf_WANT_VOID;
576		504
577	PL_op = (OP *)&myop;	505	PL_op = (OP *)&myop;
578		506
579	PUSHMARK (SP);	507	PUSHMARK (SP);
580	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));	508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
581	PUTBACK;	509	PUTBACK;
582	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
583	SPAGAIN;	511	SPAGAIN;
584		512
585	ENTER; /* necessary e.g. for dounwind */	513	ENTER; /* necessary e.g. for dounwind */
…		…
595	coro_mortal = 0;	523	coro_mortal = 0;
596	}	524	}
597	}	525	}
598		526
599	static void NOINLINE	527	static void NOINLINE
600	prepare_cctx (coro_stack *cctx)	528	prepare_cctx (coro_cctx *cctx)
601	{	529	{
602	dSP;	530	dSP;
603	LOGOP myop;	531	LOGOP myop;
604		532
605	Zero (&myop, 1, LOGOP);	533	Zero (&myop, 1, LOGOP);
606	myop.op_next = PL_op;	534	myop.op_next = PL_op;
607	myop.op_flags = OPf_WANT_VOID;	535	myop.op_flags = OPf_WANT_VOID;
608		536
609	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));	537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
610		538
611	PUSHMARK (SP);	539	PUSHMARK (SP);
612	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
613	PUTBACK;	541	PUTBACK;
614	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
615	SPAGAIN;	543	SPAGAIN;
616	}	544	}
617		545
…		…
623		551
624	/*	552	/*
625	* this is a _very_ stripped down perl interpreter ;)	553	* this is a _very_ stripped down perl interpreter ;)
626	*/	554	*/
627	PL_top_env = &PL_start_env;	555	PL_top_env = &PL_start_env;
		556
628	/* inject call to cctx_init */	557	/* inject call to cctx_init */
629	prepare_cctx ((coro_stack *)arg);	558	prepare_cctx ((coro_cctx *)arg);
630		559
631	/* somebody will hit me for both perl_run and PL_restartop */	560	/* somebody will hit me for both perl_run and PL_restartop */
632	perl_run (PL_curinterp);	561	perl_run (PL_curinterp);
633		562
634	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	563	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
635	abort ();	564	abort ();
636	}	565	}
637		566
638	static coro_stack *	567	static coro_cctx *
639	stack_new ()	568	cctx_new ()
640	{	569	{
641	coro_stack *stack;	570	coro_cctx *cctx;
642		571
		572	++cctx_count;
		573
643	New (0, stack, 1, coro_stack);	574	New (0, cctx, 1, coro_cctx);
644		575
645	#if HAVE_MMAP	576	#if HAVE_MMAP
646		577
647	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
648	/* mmap suppsedly does allocate-on-write for us */	579	/* mmap suppsedly does allocate-on-write for us */
649	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	580	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
650		581
651	if (stack->sptr == (void *)-1)	582	if (cctx->sptr == (void *)-1)
652	{	583	{
653	perror ("FATAL: unable to mmap stack for coroutine");	584	perror ("FATAL: unable to mmap stack for coroutine");
654	_exit (EXIT_FAILURE);	585	_exit (EXIT_FAILURE);
655	}	586	}
656		587
657	# if STACKGUARD	588	# if STACKGUARD
658	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	589	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
659	# endif	590	# endif
660		591
661	#else	592	#else
662		593
663	stack->ssize = STACKSIZE * (long)sizeof (long);	594	cctx->ssize = STACKSIZE * (long)sizeof (long);
664	New (0, stack->sptr, STACKSIZE, long);	595	New (0, cctx->sptr, STACKSIZE, long);
665		596
666	if (!stack->sptr)	597	if (!cctx->sptr)
667	{	598	{
668	perror (stderr, "FATAL: unable to malloc stack for coroutine");	599	perror ("FATAL: unable to malloc stack for coroutine");
669	_exit (EXIT_FAILURE);	600	_exit (EXIT_FAILURE);
670	}	601	}
671		602
672	#endif	603	#endif
673		604
674	#if USE_VALGRIND	605	#if USE_VALGRIND
675	stack->valgrind_id = VALGRIND_STACK_REGISTER (	606	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
676	STACKGUARD * PAGESIZE + (char *)stack->sptr,	607	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
677	stack->ssize + (char *)stack->sptr	608	cctx->ssize + (char *)cctx->sptr
678	);	609	);
679	#endif	610	#endif
680		611
681	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	612	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
682		613
683	return stack;	614	return cctx;
684	}	615	}
685		616
686	static void	617	static void
687	stack_free (coro_stack *stack)	618	cctx_free (coro_cctx *cctx)
688	{	619	{
689	if (!stack)	620	if (!cctx)
690	return;	621	return;
691		622
		623	--cctx_count;
		624
692	#if USE_VALGRIND	625	#if USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (stack->valgrind_id);	626	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	627	#endif
695		628
696	#if HAVE_MMAP	629	#if HAVE_MMAP
697	munmap (stack->sptr, stack->ssize);	630	munmap (cctx->sptr, cctx->ssize);
698	#else	631	#else
699	Safefree (stack->sptr);	632	Safefree (cctx->sptr);
700	#endif	633	#endif
701		634
702	Safefree (stack);	635	Safefree (cctx);
703	}	636	}
704		637
705	static coro_stack *stack_first;
706	static int cctx_count, cctx_idle;
707
708	static coro_stack *	638	static coro_cctx *
709	stack_get ()	639	cctx_get ()
710	{	640	{
711	coro_stack *stack;	641	coro_cctx *cctx;
712		642
713	if (stack_first)	643	if (cctx_first)
714	{	644	{
715	--cctx_idle;	645	--cctx_idle;
716	stack = stack_first;	646	cctx = cctx_first;
717	stack_first = stack->next;	647	cctx_first = cctx->next;
718	}	648	}
719	else	649	else
720	{	650	{
721	++cctx_count;	651	cctx = cctx_new ();
722	stack = stack_new ();
723	PL_op = PL_op->op_next;	652	PL_op = PL_op->op_next;
724	}	653	}
725		654
726	return stack;	655	return cctx;
727	}	656	}
728		657
729	static void	658	static void
730	stack_put (coro_stack *stack)	659	cctx_put (coro_cctx *cctx)
731	{	660	{
732	++cctx_idle;	661	++cctx_idle;
733	stack->next = stack_first;	662	cctx->next = cctx_first;
734	stack_first = stack;	663	cctx_first = cctx;
735	}	664	}
736		665
737	/* never call directly, always through the coro_state_transfer global variable */	666	/* never call directly, always through the coro_state_transfer global variable */
738	static void NOINLINE	667	static void NOINLINE
739	transfer (struct coro prev, struct coro next, int flags)	668	transfer (struct coro prev, struct coro next, int flags)
740	{	669	{
741	dSTACKLEVEL;	670	dSTACKLEVEL;
742		671
743	/* sometimes transfer is only called to set idle_sp */	672	/* sometimes transfer is only called to set idle_sp */
744	if (flags == TRANSFER_SET_STACKLEVEL)	673	if (flags == TRANSFER_SET_STACKLEVEL)
745	((coro_stack *)prev)->idle_sp = STACKLEVEL;	674	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
746	else if (prev != next)	675	else if (prev != next)
747	{	676	{
748	coro_stack *prev__stack;	677	coro_cctx *prev__cctx;
		678
		679	if (!prev->cctx)
		680	{
		681	/* create a new empty context */
		682	Newz (0, prev->cctx, 1, coro_cctx);
		683	prev->cctx->inuse = 1;
		684	prev->flags \|= CF_RUNNING;
		685	}
		686
		687	if (!prev->flags & CF_RUNNING)
		688	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		689
		690	if (next->flags & CF_RUNNING)
		691	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		692
		693	prev->flags &= ~CF_RUNNING;
		694	next->flags \|= CF_RUNNING;
749		695
750	LOCK;	696	LOCK;
751		697
752	if (next->mainstack)	698	if (next->mainstack)
753	{	699	{
…		…
760	/* need to start coroutine */	706	/* need to start coroutine */
761	/* first get rid of the old state */	707	/* first get rid of the old state */
762	SAVE (prev, -1);	708	SAVE (prev, -1);
763	/* setup coroutine call */	709	/* setup coroutine call */
764	setup_coro (next);	710	setup_coro (next);
765	/* need a stack */	711	/* need a new stack */
766	next->stack = 0;	712	assert (!next->stack);
767	}	713	}
768		714
769	if (!prev->stack)
770	/* create a new empty context */
771	Newz (0, prev->stack, 1, coro_stack);
772
773	prev__stack = prev->stack;	715	prev__cctx = prev->cctx;
774		716
775	/* possibly "free" the stack */	717	/* possibly "free" the cctx */
776	if (prev__stack->idle_sp == STACKLEVEL)	718	if (prev__cctx->idle_sp == STACKLEVEL)
777	{	719	{
		720	assert (PL_top_env == prev__cctx->top_env);
		721
778	stack_put (prev__stack);	722	cctx_put (prev__cctx);
779	prev->stack = 0;	723	prev->cctx = 0;
780	}	724	}
		725	else if (prev__cctx->idle_sp) //D
		726	fprintf (stderr, "coro %p has own stack %p-%p\n", prev__cctx, prev__cctx->idle_sp, STACKLEVEL);//D
781		727
782	if (!next->stack)	728	if (!next->cctx)
783	next->stack = stack_get ();	729	next->cctx = cctx_get ();
784		730
785	if (prev__stack != next->stack)	731	if (prev__cctx != next->cctx)
786	{	732	{
		733	assert ( prev__cctx->inuse);
		734	assert (!next->cctx->inuse);
		735
		736	prev__cctx->inuse = 0;
		737	next->cctx->inuse = 1;
		738
787	prev__stack->top_env = PL_top_env;	739	prev__cctx->top_env = PL_top_env;
788	PL_top_env = next->stack->top_env;	740	PL_top_env = next->cctx->top_env;
789	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	741	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
790	}	742	}
791		743
792	free_coro_mortal ();	744	free_coro_mortal ();
793		745
794	UNLOCK;	746	UNLOCK;
…		…
807	coro_state_destroy (struct coro *coro)	759	coro_state_destroy (struct coro *coro)
808	{	760	{
809	if (coro->refcnt--)	761	if (coro->refcnt--)
810	return;	762	return;
811		763
		764	if (coro->flags & CF_RUNNING)
		765	croak ("FATAL: tried to destroy currently running coroutine");
		766
812	if (coro->mainstack && coro->mainstack != main_mainstack)	767	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	768	{
814	struct coro temp;	769	struct coro temp;
815		770
816	SAVE ((&temp), TRANSFER_SAVE_ALL);	771	SAVE ((&temp), TRANSFER_SAVE_ALL);
…		…
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	776	LOAD ((&temp)); /* this will get rid of defsv etc.. */
822		777
823	coro->mainstack = 0;	778	coro->mainstack = 0;
824	}	779	}
825		780
826	stack_free (coro->stack);	781	cctx_free (coro->cctx);
827	SvREFCNT_dec (coro->args);	782	SvREFCNT_dec (coro->args);
828	Safefree (coro);	783	Safefree (coro);
829	}	784	}
830		785
831	static int	786	static int
…		…
913	static GV coro_current, coro_idle;	868	static GV coro_current, coro_idle;
914	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
915	static int coro_nready;	870	static int coro_nready;
916		871
917	static void	872	static void
918	coro_enq (SV *sv)	873	coro_enq (SV *coro_sv)
919	{	874	{
920	int prio;
921
922	if (SvTYPE (sv) != SVt_PVHV)
923	croak ("Coro::ready tried to enqueue something that is not a coroutine");
924
925	prio = SvSTATE (sv)->prio;
926
927	av_push (coro_ready [prio - PRIO_MIN], sv);	875	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;	876	coro_nready++;
929	}	877	}
930		878
931	static SV *	879	static SV *
932	coro_deq (int min_prio)	880	coro_deq (int min_prio)
…		…
945	}	893	}
946		894
947	return 0;	895	return 0;
948	}	896	}
949		897
950	static void	898	static int
951	api_ready (SV *coro)	899	api_ready (SV *coro_sv)
952	{	900	{
953	dTHX;	901	struct coro *coro;
954		902
955	if (SvROK (coro))	903	if (SvROK (coro_sv))
956	coro = SvRV (coro);	904	coro_sv = SvRV (coro_sv);
		905
		906	coro = SvSTATE (coro_sv);
		907
		908	if (coro->flags & CF_READY)
		909	return 0;
		910
		911	if (coro->flags & CF_RUNNING)
		912	croak ("Coro::ready called on currently running coroutine");
		913
		914	coro->flags \|= CF_READY;
957		915
958	LOCK;	916	LOCK;
959	coro_enq (SvREFCNT_inc (coro));	917	coro_enq (SvREFCNT_inc (coro_sv));
960	UNLOCK;	918	UNLOCK;
		919
		920	return 1;
		921	}
		922
		923	static int
		924	api_is_ready (SV *coro_sv)
		925	{
		926	return !!SvSTATE (coro_sv)->flags & CF_READY;
961	}	927	}
962		928
963	static void	929	static void
964	prepare_schedule (struct transfer_args *ta)	930	prepare_schedule (struct transfer_args *ta)
965	{	931	{
…		…
1001	coro_mortal = prev;	967	coro_mortal = prev;
1002		968
1003	ta->prev = SvSTATE (prev);	969	ta->prev = SvSTATE (prev);
1004	ta->next = SvSTATE (next);	970	ta->next = SvSTATE (next);
1005	ta->flags = TRANSFER_SAVE_ALL;	971	ta->flags = TRANSFER_SAVE_ALL;
		972
		973	ta->next->flags &= ~CF_READY;
1006	}	974	}
1007		975
1008	static void	976	static void
1009	prepare_cede (struct transfer_args *ta)	977	prepare_cede (struct transfer_args *ta)
1010	{	978	{
1011	LOCK;	979	api_ready (GvSV (coro_current));
1012	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1013	UNLOCK;
1014		980
1015	prepare_schedule (ta);	981	prepare_schedule (ta);
1016	}	982	}
1017		983
1018	static void	984	static void
…		…
1075	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1041	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1076	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1042	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1077		1043
1078	for (i = 1; i < items; i++)	1044	for (i = 1; i < items; i++)
1079	av_push (coro->args, newSVsv (ST (i)));	1045	av_push (coro->args, newSVsv (ST (i)));
1080
1081	/coro->mainstack = 0; //actual work is done inside transfer /
1082	/coro->stack = 0;/
1083	}	1046	}
1084	OUTPUT:	1047	OUTPUT:
1085	RETVAL	1048	RETVAL
1086		1049
1087	void	1050	void
…		…
1096	struct transfer_args ta;	1059	struct transfer_args ta;
1097		1060
1098	switch (ix)	1061	switch (ix)
1099	{	1062	{
1100	case 0:	1063	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1064	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1065	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;	1066	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1067	break;
1105		1068
1106	case 1:	1069	case 1:
…		…
1166	int code	1129	int code
1167	PROTOTYPE: $	1130	PROTOTYPE: $
1168	CODE:	1131	CODE:
1169	_exit (code);	1132	_exit (code);
1170		1133
		1134	int
		1135	cctx_count ()
		1136	CODE:
		1137	RETVAL = cctx_count;
		1138	OUTPUT:
		1139	RETVAL
		1140
		1141	int
		1142	cctx_idle ()
		1143	CODE:
		1144	RETVAL = cctx_idle;
		1145	OUTPUT:
		1146	RETVAL
		1147
1171	MODULE = Coro::State PACKAGE = Coro	1148	MODULE = Coro::State PACKAGE = Coro
1172		1149
1173	BOOT:	1150	BOOT:
1174	{	1151	{
1175	int i;	1152	int i;
…		…
1193	SV *sv = perl_get_sv("Coro::API", 1);	1170	SV *sv = perl_get_sv("Coro::API", 1);
1194		1171
1195	coroapi.schedule = api_schedule;	1172	coroapi.schedule = api_schedule;
1196	coroapi.cede = api_cede;	1173	coroapi.cede = api_cede;
1197	coroapi.ready = api_ready;	1174	coroapi.ready = api_ready;
		1175	coroapi.is_ready = api_is_ready;
1198	coroapi.nready = &coro_nready;	1176	coroapi.nready = &coro_nready;
1199	coroapi.current = coro_current;	1177	coroapi.current = coro_current;
1200		1178
1201	GCoroAPI = &coroapi;	1179	GCoroAPI = &coroapi;
1202	sv_setiv (sv, (IV)&coroapi);	1180	sv_setiv (sv, (IV)&coroapi);
…		…
1222		1200
1223	coro->prio = newprio;	1201	coro->prio = newprio;
1224	}	1202	}
1225	}	1203	}
1226		1204
1227	void	1205	SV *
1228	ready (SV *self)	1206	ready (SV *self)
1229	PROTOTYPE: $	1207	PROTOTYPE: $
1230	CODE:	1208	CODE:
1231	api_ready (self);	1209	RETVAL = boolSV (api_ready (self));
		1210	OUTPUT:
		1211	RETVAL
		1212
		1213	SV *
		1214	is_ready (SV *self)
		1215	PROTOTYPE: $
		1216	CODE:
		1217	RETVAL = boolSV (api_is_ready (self));
		1218	OUTPUT:
		1219	RETVAL
1232		1220
1233	int	1221	int
1234	nready (...)	1222	nready (...)
1235	PROTOTYPE:	1223	PROTOTYPE:
1236	CODE:	1224	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.104 by root, Mon Nov 27 01:51:02 2006 UTC vs. Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.104 by root, Mon Nov 27 01:51:02 2006 UTC vs.
Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC