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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	#define PERL_VERSION_ATLEAST(a,b,c) \
		14	(PERL_REVISION > (a) \
		15	\|\| (PERL_REVISION == (a) \
		16	&& (PERL_VERSION > (b) \
		17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		18
		19	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	20	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	21	# define PL_ppaddr ppaddr
14	# endif	22	# endif
15	# ifndef call_sv	23	# ifndef call_sv
16	# define call_sv perl_call_sv	24	# define call_sv perl_call_sv
66	#define dSTACKLEVEL int stacklevel	74	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	75	#define STACKLEVEL ((void *)&stacklevel)
68		76
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	77	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		78
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	79	#if __GNUC__ >= 3
		80	# define attribute(x) __attribute__(x)
		81	#else
		82	# define attribute(x)
		83	#endif
		84
		85	#define NOINLINE attribute ((noinline))
72		86
73	#include "CoroAPI.h"	87	#include "CoroAPI.h"
74		88
75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */	89	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
76		90
…		…
90		104
91	/* this is a structure representing a c-level coroutine */	105	/* this is a structure representing a c-level coroutine */
92	typedef struct coro_stack {	106	typedef struct coro_stack {
93	struct coro_stack *next;	107	struct coro_stack *next;
94		108
95	void idle_sp; / original stacklevel when coroutine was created */	109	/* the stack */
96	void *sptr;	110	void *sptr;
97	long ssize; /* positive == mmap, otherwise malloc */	111	long ssize; /* positive == mmap, otherwise malloc */
98		112
99	/* cpu state */	113	/* cpu state */
		114	void idle_sp; / sp of top-level transfer/schedule/cede call */
		115	JMPENV *top_env;
100	coro_context cctx;	116	coro_context cctx;
101	JMPENV *top_env;	117
		118	#if USE_VALGRIND
		119	int valgrind_id;
		120	#endif
102	} coro_stack;	121	} coro_stack;
103
104	/* the (fake) coro_stack representing the main program */
105	static coro_stack *main_stack;
106		122
107	/* this is a structure representing a perl-level coroutine */	123	/* this is a structure representing a perl-level coroutine */
108	struct coro {	124	struct coro {
109	/* the c coroutine allocated to this perl coroutine, if any */	125	/* the c coroutine allocated to this perl coroutine, if any */
110	coro_stack *stack;	126	coro_stack *stack;
…		…
158		174
159	typedef struct coro *Coro__State;	175	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	176	typedef struct coro *Coro__State_or_hashref;
161		177
162	static AV *	178	static AV *
163	coro_clone_padlist (pTHX_ CV *cv)	179	coro_clone_padlist (CV *cv)
164	{	180	{
165	AV *padlist = CvPADLIST (cv);	181	AV *padlist = CvPADLIST (cv);
166	AV newpadlist, newpad;	182	AV newpadlist, newpad;
167		183
168	newpadlist = newAV ();	184	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	185	AvREAL_off (newpadlist);
170	#if PERL_VERSION < 9	186	#if PERL_VERSION_ATLEAST (5,9,0)
		187	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		188	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	189	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
172	#else
173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
174	#endif	190	#endif
175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	191	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176	--AvFILLp (padlist);	192	--AvFILLp (padlist);
177		193
178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	194	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
180		196
181	return newpadlist;	197	return newpadlist;
182	}	198	}
183		199
184	static void	200	static void
185	free_padlist (pTHX_ AV *padlist)	201	free_padlist (AV *padlist)
186	{	202	{
187	/* may be during global destruction */	203	/* may be during global destruction */
188	if (SvREFCNT (padlist))	204	if (SvREFCNT (padlist))
189	{	205	{
190	I32 i = AvFILLp (padlist);	206	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	227	AV *padlist;
212	AV av = (AV )mg->mg_obj;	228	AV av = (AV )mg->mg_obj;
213		229
214	/* casting is fun. */	230	/* casting is fun. */
215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	231	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
216	free_padlist (aTHX_ padlist);	232	free_padlist (padlist);
217		233
218	SvREFCNT_dec (av);	234	SvREFCNT_dec (av);
219		235
220	return 0;	236	return 0;
221	}	237	}
…		…
224		240
225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	241	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
226		242
227	/* the next two functions merely cache the padlists */	243	/* the next two functions merely cache the padlists */
228	static void	244	static void
229	get_padlist (pTHX_ CV *cv)	245	get_padlist (CV *cv)
230	{	246	{
231	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
232		248
233	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	249	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
234	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	250	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
235	else	251	else
236	{	252	{
237	#if 0	253	#if 0
238	/* this should work - but it doesn't :( */	254	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (aTHX_ cv);	255	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	256	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	257	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	258	SvREFCNT_dec (cp);
243	#else	259	#else
244	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	260	CvPADLIST (cv) = coro_clone_padlist (cv);
245	#endif	261	#endif
246	}	262	}
247	}	263	}
248		264
249	static void	265	static void
250	put_padlist (pTHX_ CV *cv)	266	put_padlist (CV *cv)
251	{	267	{
252	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	268	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
253		269
254	if (!mg)	270	if (!mg)
255	{	271	{
…		…
263	}	279	}
264		280
265	#define SB do {	281	#define SB do {
266	#define SE } while (0)	282	#define SE } while (0)
267		283
268	#define LOAD(state) load_state(aTHX_ (state));	284	#define LOAD(state) load_state((state));
269	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	285	#define SAVE(state,flags) save_state((state),(flags));
270		286
271	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	287	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
272		288
273	static void	289	static void
274	load_state(pTHX_ Coro__State c)	290	load_state(Coro__State c)
275	{	291	{
276	PL_dowarn = c->dowarn;	292	PL_dowarn = c->dowarn;
277	PL_in_eval = c->in_eval;	293	PL_in_eval = c->in_eval;
278		294
279	PL_curstackinfo = c->curstackinfo;	295	PL_curstackinfo = c->curstackinfo;
…		…
297	PL_scopestack_ix = c->scopestack_ix;	313	PL_scopestack_ix = c->scopestack_ix;
298	PL_scopestack_max = c->scopestack_max;	314	PL_scopestack_max = c->scopestack_max;
299	PL_savestack = c->savestack;	315	PL_savestack = c->savestack;
300	PL_savestack_ix = c->savestack_ix;	316	PL_savestack_ix = c->savestack_ix;
301	PL_savestack_max = c->savestack_max;	317	PL_savestack_max = c->savestack_max;
302	#if PERL_VERSION < 9	318	#if !PERL_VERSION_ATLEAST (5,9,0)
303	PL_retstack = c->retstack;	319	PL_retstack = c->retstack;
304	PL_retstack_ix = c->retstack_ix;	320	PL_retstack_ix = c->retstack_ix;
305	PL_retstack_max = c->retstack_max;	321	PL_retstack_max = c->retstack_max;
306	#endif	322	#endif
307	PL_curpm = c->curpm;	323	PL_curpm = c->curpm;
…		…
320	{	336	{
321	AV padlist = (AV )POPs;	337	AV padlist = (AV )POPs;
322		338
323	if (padlist)	339	if (padlist)
324	{	340	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	341	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	342	CvPADLIST(cv) = padlist;
327	}	343	}
328		344
329	++CvDEPTH(cv);	345	++CvDEPTH(cv);
330	}	346	}
…		…
332	PUTBACK;	348	PUTBACK;
333	}	349	}
334	}	350	}
335		351
336	static void	352	static void
337	save_state(pTHX_ Coro__State c, int flags)	353	save_state(Coro__State c, int flags)
338	{	354	{
339	{	355	{
340	dSP;	356	dSP;
341	I32 cxix = cxstack_ix;	357	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	358	PERL_CONTEXT *ccstk = cxstack;
…		…
370	}	386	}
371		387
372	PUSHs ((SV *)CvPADLIST(cv));	388	PUSHs ((SV *)CvPADLIST(cv));
373	PUSHs ((SV *)cv);	389	PUSHs ((SV *)cv);
374		390
375	get_padlist (aTHX_ cv);	391	get_padlist (cv);
376	}	392	}
377	}	393	}
378	#ifdef CXt_FORMAT	394	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)	395	else if (CxTYPE(cx) == CXt_FORMAT)
380	{	396	{
…		…
424	c->scopestack_ix = PL_scopestack_ix;	440	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;	441	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;	442	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;	443	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;	444	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9	445	#if !PERL_VERSION_ATLEAST (5,9,0)
430	c->retstack = PL_retstack;	446	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;	447	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;	448	c->retstack_max = PL_retstack_max;
433	#endif	449	#endif
434	c->curpm = PL_curpm;	450	c->curpm = PL_curpm;
…		…
440	* of perl.c:init_stacks, except that it uses less memory	456	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	457	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	458	* not usually need a lot of stackspace.
443	*/	459	*/
444	static void	460	static void
445	coro_init_stacks (pTHX)	461	coro_init_stacks ()
446	{	462	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	463	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
450	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		467
…		…
474		488
475	New(54,PL_savestack,96,ANY);	489	New(54,PL_savestack,96,ANY);
476	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	491	PL_savestack_max = 96;
478		492
479	#if PERL_VERSION < 9	493	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	494	New(54,PL_retstack,8,OP*);
481	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	496	PL_retstack_max = 8;
483	#endif	497	#endif
484
485	UNLOCK;
486	}	498	}
487		499
488	/*	500	/*
489	* destroy the stacks, the callchain etc...	501	* destroy the stacks, the callchain etc...
490	*/	502	*/
491	static void	503	static void
492	destroy_stacks(pTHX)	504	coro_destroy_stacks()
493	{	505	{
494	if (!IN_DESTRUCT)	506	if (!IN_DESTRUCT)
495	{	507	{
496	/* is this ugly, I ask? */	508	/* is this ugly, I ask? */
497	LEAVE_SCOPE (0);	509	LEAVE_SCOPE (0);
…		…
528		540
529	Safefree (PL_tmps_stack);	541	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	542	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	543	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	544	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	545	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	546	Safefree (PL_retstack);
535	#endif	547	#endif
536	}	548	}
537		549
538	static void	550	static void
539	setup_coro (struct coro *coro)	551	setup_coro (struct coro *coro)
540	{	552	{
541	/*	553	/*
542	* emulate part of the perl startup here.	554	* emulate part of the perl startup here.
543	*/	555	*/
544	dTHX;
545	dSP;
546	UNOP myop;
547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
548		556
549	coro_init_stacks (aTHX);	557	coro_init_stacks ();
		558
550	/PL_curcop = 0;/	559	PL_curcop = 0;
551	/PL_in_eval = PL_in_eval;/ /* inherit */	560	PL_in_eval = 0;
		561	PL_curpm = 0;
		562
		563	{
		564	dSP;
		565	LOGOP myop;
		566
		567	/* I have no idea why this is needed, but it is */
		568	PUSHMARK (SP);
		569
552	SvREFCNT_dec (GvAV (PL_defgv));	570	SvREFCNT_dec (GvAV (PL_defgv));
553	GvAV (PL_defgv) = coro->args; coro->args = 0;	571	GvAV (PL_defgv) = coro->args; coro->args = 0;
554		572
555	SPAGAIN;
556
557	Zero (&myop, 1, UNOP);	573	Zero (&myop, 1, LOGOP);
558	myop.op_next = Nullop;	574	myop.op_next = Nullop;
559	myop.op_flags = OPf_WANT_VOID;	575	myop.op_flags = OPf_WANT_VOID;
560		576
561	PL_op = (OP *)&myop;	577	PL_op = (OP *)&myop;
562		578
563	PUSHMARK(SP);	579	PUSHMARK (SP);
564	XPUSHs (sub_init);	580	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
565	PUTBACK;	581	PUTBACK;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	582	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	583	SPAGAIN;
568		584
569	ENTER; /* necessary e.g. for dounwind */	585	ENTER; /* necessary e.g. for dounwind */
		586	}
570	}	587	}
571		588
572	static void	589	static void
573	free_coro_mortal ()	590	free_coro_mortal ()
574	{	591	{
…		…
577	SvREFCNT_dec (coro_mortal);	594	SvREFCNT_dec (coro_mortal);
578	coro_mortal = 0;	595	coro_mortal = 0;
579	}	596	}
580	}	597	}
581		598
		599	static void NOINLINE
		600	prepare_cctx (coro_stack *cctx)
		601	{
		602	dSP;
		603	LOGOP myop;
		604
		605	Zero (&myop, 1, LOGOP);
		606	myop.op_next = PL_op;
		607	myop.op_flags = OPf_WANT_VOID;
		608
		609	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
		610
		611	PUSHMARK (SP);
		612	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
		613	PUTBACK;
		614	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		615	SPAGAIN;
		616	}
		617
582	static void	618	static void
583	coro_run (void *arg)	619	coro_run (void *arg)
584	{	620	{
		621	/* coro_run is the alternative epilogue of transfer() */
		622	UNLOCK;
		623
585	/*	624	/*
586	* this is a _very_ stripped down perl interpreter ;)	625	* this is a _very_ stripped down perl interpreter ;)
587	*/	626	*/
588	dTHX;
589	PL_top_env = &PL_start_env;	627	PL_top_env = &PL_start_env;
		628	/* inject call to cctx_init */
		629	prepare_cctx ((coro_stack *)arg);
590		630
591	UNLOCK;
592
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
596
597	/* somebody will hit me for both perl_run and PL_restart_op */	631	/* somebody will hit me for both perl_run and PL_restartop */
598	perl_run (aTHX_ PERL_GET_CONTEXT);	632	perl_run (PL_curinterp);
599		633
		634	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
600	abort ();	635	abort ();
601	}	636	}
602		637
603	static coro_stack *	638	static coro_stack *
604	stack_new ()	639	stack_new ()
…		…
607		642
608	New (0, stack, 1, coro_stack);	643	New (0, stack, 1, coro_stack);
609		644
610	#if HAVE_MMAP	645	#if HAVE_MMAP
611		646
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	647	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		648	/* mmap suppsedly does allocate-on-write for us */
613	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	649	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
614		650
615	if (stack->sptr == (void *)-1)	651	if (stack->sptr == (void *)-1)
616	{	652	{
617	perror ("FATAL: unable to mmap stack for coroutine");	653	perror ("FATAL: unable to mmap stack for coroutine");
618	_exit (EXIT_FAILURE);	654	_exit (EXIT_FAILURE);
619	}	655	}
620		656
		657	# if STACKGUARD
621	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	658	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		659	# endif
622		660
623	#else	661	#else
624		662
625	stack->ssize = STACKSIZE * (long)sizeof (long);	663	stack->ssize = STACKSIZE * (long)sizeof (long);
626	New (0, stack->sptr, STACKSIZE, long);	664	New (0, stack->sptr, STACKSIZE, long);
…		…
631	_exit (EXIT_FAILURE);	669	_exit (EXIT_FAILURE);
632	}	670	}
633		671
634	#endif	672	#endif
635		673
		674	#if USE_VALGRIND
		675	stack->valgrind_id = VALGRIND_STACK_REGISTER (
		676	STACKGUARD * PAGESIZE + (char *)stack->sptr,
		677	stack->ssize + (char *)stack->sptr
		678	);
		679	#endif
		680
636	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	681	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
637		682
638	return stack;	683	return stack;
639	}	684	}
640		685
641	static void	686	static void
642	stack_free (coro_stack *stack)	687	stack_free (coro_stack *stack)
643	{	688	{
644	if (!stack \|\| stack == main_stack)	689	if (!stack)
645	return;	690	return;
		691
		692	#if USE_VALGRIND
		693	VALGRIND_STACK_DEREGISTER (stack->valgrind_id);
		694	#endif
646		695
647	#if HAVE_MMAP	696	#if HAVE_MMAP
648	munmap (stack->sptr, stack->ssize);	697	munmap (stack->sptr, stack->ssize);
649	#else	698	#else
650	Safefree (stack->sptr);	699	Safefree (stack->sptr);
…		…
652		701
653	Safefree (stack);	702	Safefree (stack);
654	}	703	}
655		704
656	static coro_stack *stack_first;	705	static coro_stack *stack_first;
		706	static int cctx_count, cctx_idle;
657		707
658	static coro_stack *	708	static coro_stack *
659	stack_get ()	709	stack_get ()
660	{	710	{
661	coro_stack *stack;	711	coro_stack *stack;
662		712
663	if (stack_first)	713	if (stack_first)
664	{	714	{
		715	--cctx_idle;
665	stack = stack_first;	716	stack = stack_first;
666	stack_first = stack->next;	717	stack_first = stack->next;
667	}	718	}
668	else	719	else
669	{	720	{
		721	++cctx_count;
670	stack = stack_new ();	722	stack = stack_new ();
671	PL_op = PL_op->op_next;	723	PL_op = PL_op->op_next;
672	}	724	}
673		725
674	return stack;	726	return stack;
675	}	727	}
676		728
677	static void	729	static void
678	stack_put (coro_stack *stack)	730	stack_put (coro_stack *stack)
679	{	731	{
		732	++cctx_idle;
680	stack->next = stack_first;	733	stack->next = stack_first;
681	stack_first = stack;	734	stack_first = stack;
682	}	735	}
683		736
684	/* never call directly, always through the coro_state_transfer global variable */	737	/* never call directly, always through the coro_state_transfer global variable */
685	static void	738	static void NOINLINE
686	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	739	transfer (struct coro prev, struct coro next, int flags)
687	{	740	{
688	dSTACKLEVEL;	741	dSTACKLEVEL;
689		742
690	/* sometimes transfer is only called to set idle_sp */	743	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	744	if (flags == TRANSFER_SET_STACKLEVEL)
…		…
711	setup_coro (next);	764	setup_coro (next);
712	/* need a stack */	765	/* need a stack */
713	next->stack = 0;	766	next->stack = 0;
714	}	767	}
715		768
		769	if (!prev->stack)
		770	/* create a new empty context */
		771	Newz (0, prev->stack, 1, coro_stack);
		772
716	prev__stack = prev->stack;	773	prev__stack = prev->stack;
717		774
718	/* possibly "free" the stack */	775	/* possibly "free" the stack */
719	if (prev__stack->idle_sp == STACKLEVEL)	776	if (prev__stack->idle_sp == STACKLEVEL)
720	{	777	{
…		…
736		793
737	UNLOCK;	794	UNLOCK;
738	}	795	}
739	}	796	}
740		797
741	/* use this function pointer to call the above function */
742	/* this is done to increase chances of the compiler not inlining the call */
743	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
744	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
745
746	struct transfer_args	798	struct transfer_args
747	{	799	{
748	struct coro prev, next;	800	struct coro prev, next;
749	int flags;	801	int flags;
750	};	802	};
751		803
752	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	804	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
753		805
754	static void	806	static void
755	coro_state_destroy (struct coro *coro)	807	coro_state_destroy (struct coro *coro)
756	{	808	{
757	if (coro->refcnt--)	809	if (coro->refcnt--)
…		…
759		811
760	if (coro->mainstack && coro->mainstack != main_mainstack)	812	if (coro->mainstack && coro->mainstack != main_mainstack)
761	{	813	{
762	struct coro temp;	814	struct coro temp;
763		815
764	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	816	SAVE ((&temp), TRANSFER_SAVE_ALL);
765	LOAD (aTHX_ coro);	817	LOAD (coro);
766		818
767	destroy_stacks (aTHX);	819	coro_destroy_stacks ();
768		820
769	LOAD ((&temp)); /* this will get rid of defsv etc.. */	821	LOAD ((&temp)); /* this will get rid of defsv etc.. */
770		822
771	coro->mainstack = 0;	823	coro->mainstack = 0;
772	}	824	}
…		…
775	SvREFCNT_dec (coro->args);	827	SvREFCNT_dec (coro->args);
776	Safefree (coro);	828	Safefree (coro);
777	}	829	}
778		830
779	static int	831	static int
780	coro_state_clear (SV sv, MAGIC mg)	832	coro_state_clear (pTHX_ SV sv, MAGIC mg)
781	{	833	{
782	struct coro coro = (struct coro )mg->mg_ptr;	834	struct coro coro = (struct coro )mg->mg_ptr;
783	mg->mg_ptr = 0;	835	mg->mg_ptr = 0;
784		836
785	coro_state_destroy (coro);	837	coro_state_destroy (coro);
786		838
787	return 0;	839	return 0;
788	}	840	}
789		841
790	static int	842	static int
791	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	843	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
792	{	844	{
793	struct coro coro = (struct coro )mg->mg_ptr;	845	struct coro coro = (struct coro )mg->mg_ptr;
794		846
795	++coro->refcnt;	847	++coro->refcnt;
796		848
797	return 0;	849	return 0;
798	}	850	}
799		851
800	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	852	static MGVTBL coro_state_vtbl = {
		853	0, 0, 0, 0,
		854	coro_state_clear,
		855	0,
		856	#ifdef MGf_DUP
		857	coro_state_dup,
		858	#else
		859	# define MGf_DUP 0
		860	#endif
		861	};
801		862
802	static struct coro *	863	static struct coro *
803	SvSTATE (SV *coro)	864	SvSTATE (SV *coro)
804	{	865	{
805	HV *stash;	866	HV *stash;
…		…
820	assert (mg->mg_type == PERL_MAGIC_ext);	881	assert (mg->mg_type == PERL_MAGIC_ext);
821	return (struct coro *)mg->mg_ptr;	882	return (struct coro *)mg->mg_ptr;
822	}	883	}
823		884
824	static void	885	static void
825	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	886	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
826	{	887	{
827	ta->prev = SvSTATE (prev);	888	ta->prev = SvSTATE (prev);
828	ta->next = SvSTATE (next);	889	ta->next = SvSTATE (next);
829	ta->flags = flags;	890	ta->flags = flags;
830	}	891	}
…		…
833	api_transfer (SV prev, SV next, int flags)	894	api_transfer (SV prev, SV next, int flags)
834	{	895	{
835	dTHX;	896	dTHX;
836	struct transfer_args ta;	897	struct transfer_args ta;
837		898
838	prepare_transfer (aTHX_ &ta, prev, next, flags);	899	prepare_transfer (&ta, prev, next, flags);
839	TRANSFER (ta);	900	TRANSFER (ta);
840	}	901	}
841		902
842	/ Coro ******************************************************************/	903	/ Coro ******************************************************************/
843		904
…		…
852	static GV coro_current, coro_idle;	913	static GV coro_current, coro_idle;
853	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	914	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
854	static int coro_nready;	915	static int coro_nready;
855		916
856	static void	917	static void
857	coro_enq (pTHX_ SV *sv)	918	coro_enq (SV *sv)
858	{	919	{
859	int prio;	920	int prio;
860		921
861	if (SvTYPE (sv) != SVt_PVHV)	922	if (SvTYPE (sv) != SVt_PVHV)
862	croak ("Coro::ready tried to enqueue something that is not a coroutine");	923	croak ("Coro::ready tried to enqueue something that is not a coroutine");
…		…
866	av_push (coro_ready [prio - PRIO_MIN], sv);	927	av_push (coro_ready [prio - PRIO_MIN], sv);
867	coro_nready++;	928	coro_nready++;
868	}	929	}
869		930
870	static SV *	931	static SV *
871	coro_deq (pTHX_ int min_prio)	932	coro_deq (int min_prio)
872	{	933	{
873	int prio = PRIO_MAX - PRIO_MIN;	934	int prio = PRIO_MAX - PRIO_MIN;
874		935
875	min_prio -= PRIO_MIN;	936	min_prio -= PRIO_MIN;
876	if (min_prio < 0)	937	if (min_prio < 0)
…		…
893		954
894	if (SvROK (coro))	955	if (SvROK (coro))
895	coro = SvRV (coro);	956	coro = SvRV (coro);
896		957
897	LOCK;	958	LOCK;
898	coro_enq (aTHX_ SvREFCNT_inc (coro));	959	coro_enq (SvREFCNT_inc (coro));
899	UNLOCK;	960	UNLOCK;
900	}	961	}
901		962
902	static void	963	static void
903	prepare_schedule (aTHX_ struct transfer_args *ta)	964	prepare_schedule (struct transfer_args *ta)
904	{	965	{
905	SV current, prev, *next;	966	SV current, prev, *next;
906
907	LOCK;
908		967
909	current = GvSV (coro_current);	968	current = GvSV (coro_current);
910		969
911	for (;;)	970	for (;;)
912	{	971	{
913	LOCK;	972	LOCK;
914
915	next = coro_deq (aTHX_ PRIO_MIN);	973	next = coro_deq (PRIO_MIN);
		974	UNLOCK;
916		975
917	if (next)	976	if (next)
918	break;	977	break;
919
920	UNLOCK;
921		978
922	{	979	{
923	dSP;	980	dSP;
924		981
925	ENTER;	982	ENTER;
…		…
936		993
937	prev = SvRV (current);	994	prev = SvRV (current);
938	SvRV (current) = next;	995	SvRV (current) = next;
939		996
940	/* free this only after the transfer */	997	/* free this only after the transfer */
		998	LOCK;
941	free_coro_mortal ();	999	free_coro_mortal ();
		1000	UNLOCK;
942	coro_mortal = prev;	1001	coro_mortal = prev;
943		1002
944	ta->prev = SvSTATE (prev);	1003	ta->prev = SvSTATE (prev);
945	ta->next = SvSTATE (next);	1004	ta->next = SvSTATE (next);
946	ta->flags = TRANSFER_SAVE_ALL;	1005	ta->flags = TRANSFER_SAVE_ALL;
947
948	UNLOCK;
949	}	1006	}
950		1007
951	static void	1008	static void
952	prepare_cede (aTHX_ struct transfer_args *ta)	1009	prepare_cede (struct transfer_args *ta)
953	{	1010	{
954	LOCK;	1011	LOCK;
955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1012	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
956	UNLOCK;	1013	UNLOCK;
957		1014
958	prepare_schedule (ta);	1015	prepare_schedule (ta);
959	}	1016	}
960		1017
…		…
998	main_mainstack = PL_mainstack;	1055	main_mainstack = PL_mainstack;
999		1056
1000	coroapi.ver = CORO_API_VERSION;	1057	coroapi.ver = CORO_API_VERSION;
1001	coroapi.transfer = api_transfer;	1058	coroapi.transfer = api_transfer;
1002		1059
1003	Newz (0, main_stack, 1, coro_stack);
1004	main_stack->idle_sp = (void *)-1;
1005
1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1060	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1007	}	1061	}
1008		1062
1009	SV *	1063	SV *
1010	new (char *klass, ...)	1064	new (char *klass, ...)
…		…
1022	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1076	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1023		1077
1024	for (i = 1; i < items; i++)	1078	for (i = 1; i < items; i++)
1025	av_push (coro->args, newSVsv (ST (i)));	1079	av_push (coro->args, newSVsv (ST (i)));
1026		1080
1027	coro->stack = main_stack;
1028	/coro->mainstack = 0; //actual work is done inside transfer /	1081	/coro->mainstack = 0; //actual work is done inside transfer /
1029	/coro->stack = 0;/	1082	/coro->stack = 0;/
1030	}	1083	}
1031	OUTPUT:	1084	OUTPUT:
1032	RETVAL	1085	RETVAL
1033		1086
1034	void	1087	void
1035	transfer (...)	1088	_set_stacklevel (...)
1036	ALIAS:	1089	ALIAS:
1037	Coro::schedule = 1	1090	Coro::State::transfer = 1
1038	Coro::cede = 2	1091	Coro::schedule = 2
1039	_set_stacklevel = 3	1092	Coro::cede = 3
		1093	Coro::Cont::yield = 4
1040	CODE:	1094	CODE:
1041	{	1095	{
1042	struct transfer_args ta;	1096	struct transfer_args ta;
1043		1097
1044	switch (ix)	1098	switch (ix)
1045	{	1099	{
1046	case 0:	1100	case 0:
1047	if (items != 3)
1048	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1049
1050	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1051	break;
1052
1053	case 1:
1054	prepare_schedule (&ta);
1055	break;
1056
1057	case 2:
1058	prepare_cede (&ta);
1059	break;
1060
1061	case 3:
1062	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1101	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
1063	ta.next = 0;	1102	ta.next = 0;
1064	ta.flags = TRANSFER_SET_STACKLEVEL;	1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1065	break;	1104	break;
		1105
		1106	case 1:
		1107	if (items != 3)
		1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1109
		1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1111	break;
		1112
		1113	case 2:
		1114	prepare_schedule (&ta);
		1115	break;
		1116
		1117	case 3:
		1118	prepare_cede (&ta);
		1119	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
1066	}	1147	}
1067		1148
1068	TRANSFER (ta);	1149	TRANSFER (ta);
1069	}	1150	}
1070		1151
…		…
1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1078		1159
1079	++coro_src->refcnt;	1160	++coro_src->refcnt;
1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1161	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1081	}	1162	}
1082
1083	void
1084	_nonlocal_goto (IV nextop)
1085	CODE:
1086	/* uuh, somebody will kill me again for this */
1087	PL_op->op_next = INT2PTR (OP *, nextop);
1088		1163
1089	void	1164	void
1090	_exit (code)	1165	_exit (code)
1091	int code	1166	int code
1092	PROTOTYPE: $	1167	PROTOTYPE: $
1093	CODE:	1168	CODE:
1094	_exit (code);	1169	_exit (code);
1095
1096	MODULE = Coro::State PACKAGE = Coro::Cont
1097
1098	void
1099	yield (...)
1100	PROTOTYPE: @
1101	CODE:
1102	{
1103	SV *yieldstack;
1104	SV *sv;
1105	AV *defav = GvAV (PL_defgv);
1106	struct coro prev, next;
1107
1108	yieldstack = *hv_fetch (
1109	(HV *)SvRV (GvSV (coro_current)),
1110	"yieldstack", sizeof ("yieldstack") - 1,
1111	0
1112	);
1113
1114	/* set up @_ -- ugly */
1115	av_clear (defav);
1116	av_fill (defav, items - 1);
1117	while (items--)
1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1119
1120	sv = av_pop ((AV *)SvRV (yieldstack));
1121	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1122	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1123	SvREFCNT_dec (sv);
1124
1125	coro_state_transfer (aTHX_ prev, next, 0);
1126	}
1127		1170
1128	MODULE = Coro::State PACKAGE = Coro	1171	MODULE = Coro::State PACKAGE = Coro
1129		1172
1130	BOOT:	1173	BOOT:
1131	{	1174	{

Diff Legend

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

Comparing Coro/Coro/State.xs (file contents): Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs. Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC