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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs.
Revision 1.101 by root, Mon Nov 27 00:08:18 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	#define PERL_VERSION_ATLEAST(a,b,c) \
		10	(PERL_REVISION > (a) \
		11	\|\| (PERL_REVISION == (a) \
		12	&& (PERL_VERSION > (b) \
		13	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		14
		15	#if !PERL_VERSION_ATLEAST (5,8,0)
12	# ifndef PL_ppaddr	16	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	17	# define PL_ppaddr ppaddr
14	# endif	18	# endif
15	# ifndef call_sv	19	# ifndef call_sv
16	# define call_sv perl_call_sv	20	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	31	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	32	# define IS_PADCONST(v) 0
29	# endif	33	# endif
30	#endif	34	#endif
31		35
		36	#include <stdio.h>
32	#include <errno.h>	37	#include <errno.h>
33		38
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	39	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	40	# undef STACKGUARD
36	#endif	41	#endif
…		…
57	# else	62	# else
58	# define BOOT_PAGESIZE	63	# define BOOT_PAGESIZE
59	# endif	64	# endif
60	#endif	65	#endif
61		66
62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64
65	/* The next macro should declare a variable stacklevel that contains and approximation	67	/* The next macro should declare a variable stacklevel that contains and approximation
66	* to the current C stack pointer. Its property is that it changes with each call	68	* to the current C stack pointer. Its property is that it changes with each call
67	* and should be unique. */	69	* and should be unique. */
		70	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	71	#define STACKLEVEL ((void *)&stacklevel)
69		72
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	73	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		74
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	75	#if __GNUC__ >= 3
		76	# define attribute(x) __attribute__(x)
		77	#else
		78	# define attribute(x)
		79	#endif
		80
		81	#define NOINLINE attribute ((noinline))
73		82
74	#include "CoroAPI.h"	83	#include "CoroAPI.h"
		84
		85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
75		86
76	#ifdef USE_ITHREADS	87	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	88	static perl_mutex coro_mutex;
78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
82	# define UNLOCK (void)0	93	# define UNLOCK (void)0
83	#endif	94	#endif
84		95
85	static struct CoroAPI coroapi;	96	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	97	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	98	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	99	static SV coro_mortal; / will be freed after next transfer */
91		100
92	/* this is actually not only the c stack but also c registers etc... */	101	/* this is a structure representing a c-level coroutine */
93	typedef struct {	102	typedef struct coro_stack {
94	int refcnt; /* pointer reference counter */	103	struct coro_stack *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		104
98	coro_context cctx;	105	/* the stack */
99
100	void *sptr;	106	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	107	long ssize; /* positive == mmap, otherwise malloc */
		108
		109	/* cpu state */
		110	void idle_sp; / sp of top-level transfer/schedule/cede call */
		111	JMPENV *top_env;
		112	coro_context cctx;
102	} coro_stack;	113	} coro_stack;
103		114
		115	/* this is a structure representing a perl-level coroutine */
104	struct coro {	116	struct coro {
105	/* the top-level JMPENV for each coroutine, needed to catch dies. */	117	/* the c coroutine allocated to this perl coroutine, if any */
106	JMPENV start_env;
107
108	/* the optional C context */
109	coro_stack *stack;	118	coro_stack *stack;
110	void *cursp;	119
		120	/* data associated with this coroutine (initial args) */
		121	AV *args;
111	int gencnt;	122	int refcnt;
112		123
113	/* optionally saved, might be zero */	124	/* optionally saved, might be zero */
114	AV *defav;	125	AV *defav;
115	SV *defsv;	126	SV *defsv;
116	SV *errsv;	127	SV *errsv;
…		…
146	OP **retstack;	157	OP **retstack;
147	I32 retstack_ix;	158	I32 retstack_ix;
148	I32 retstack_max;	159	I32 retstack_max;
149	PMOP *curpm;	160	PMOP *curpm;
150	COP *curcop;	161	COP *curcop;
151	JMPENV *top_env;
152		162
153	/* data associated with this coroutine (initial args) */	163	/* coro process data */
154	AV *args;	164	int prio;
155	};	165	};
156		166
157	typedef struct coro *Coro__State;	167	typedef struct coro *Coro__State;
158	typedef struct coro *Coro__State_or_hashref;	168	typedef struct coro *Coro__State_or_hashref;
159		169
160	static AV *	170	static AV *
161	coro_clone_padlist (pTHX_ CV *cv)	171	coro_clone_padlist (CV *cv)
162	{	172	{
163	AV *padlist = CvPADLIST (cv);	173	AV *padlist = CvPADLIST (cv);
164	AV newpadlist, newpad;	174	AV newpadlist, newpad;
165		175
166	newpadlist = newAV ();	176	newpadlist = newAV ();
167	AvREAL_off (newpadlist);	177	AvREAL_off (newpadlist);
168	#if PERL_VERSION < 9	178	#if PERL_VERSION_ATLEAST (5,9,0)
		179	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		180	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	181	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
170	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
172	#endif	182	#endif
173	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	183	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
174	--AvFILLp (padlist);	184	--AvFILLp (padlist);
175		185
176	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	186	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
178		188
179	return newpadlist;	189	return newpadlist;
180	}	190	}
181		191
182	static void	192	static void
183	free_padlist (pTHX_ AV *padlist)	193	free_padlist (AV *padlist)
184	{	194	{
185	/* may be during global destruction */	195	/* may be during global destruction */
186	if (SvREFCNT (padlist))	196	if (SvREFCNT (padlist))
187	{	197	{
188	I32 i = AvFILLp (padlist);	198	I32 i = AvFILLp (padlist);
…		…
209	AV *padlist;	219	AV *padlist;
210	AV av = (AV )mg->mg_obj;	220	AV av = (AV )mg->mg_obj;
211		221
212	/* casting is fun. */	222	/* casting is fun. */
213	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	223	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
214	free_padlist (aTHX_ padlist);	224	free_padlist (padlist);
215		225
216	SvREFCNT_dec (av);	226	SvREFCNT_dec (av);
217		227
218	return 0;	228	return 0;
219	}	229	}
…		…
222		232
223	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
224		234
225	/* the next two functions merely cache the padlists */	235	/* the next two functions merely cache the padlists */
226	static void	236	static void
227	get_padlist (pTHX_ CV *cv)	237	get_padlist (CV *cv)
228	{	238	{
229	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
230		240
231	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
232	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
233	else	243	else
234	{	244	{
235	#if 0	245	#if 0
236	/* this should work - but it doesn't :( */	246	/* this is probably cleaner, but also slower? */
237	CV *cp = Perl_cv_clone (aTHX_ cv);	247	CV *cp = Perl_cv_clone (cv);
238	CvPADLIST (cv) = CvPADLIST (cp);	248	CvPADLIST (cv) = CvPADLIST (cp);
239	CvPADLIST (cp) = 0;	249	CvPADLIST (cp) = 0;
240	SvREFCNT_dec (cp);	250	SvREFCNT_dec (cp);
241	#else	251	#else
242	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	252	CvPADLIST (cv) = coro_clone_padlist (cv);
243	#endif	253	#endif
244	}	254	}
245	}	255	}
246		256
247	static void	257	static void
248	put_padlist (pTHX_ CV *cv)	258	put_padlist (CV *cv)
249	{	259	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
251		261
252	if (!mg)	262	if (!mg)
253	{	263	{
…		…
261	}	271	}
262		272
263	#define SB do {	273	#define SB do {
264	#define SE } while (0)	274	#define SE } while (0)
265		275
266	#define LOAD(state) load_state(aTHX_ (state));	276	#define LOAD(state) load_state((state));
267	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	277	#define SAVE(state,flags) save_state((state),(flags));
268		278
269	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	279	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
270		280
271	static void	281	static void
272	load_state(pTHX_ Coro__State c)	282	load_state(Coro__State c)
273	{	283	{
274	PL_dowarn = c->dowarn;	284	PL_dowarn = c->dowarn;
275	PL_in_eval = c->in_eval;	285	PL_in_eval = c->in_eval;
276		286
277	PL_curstackinfo = c->curstackinfo;	287	PL_curstackinfo = c->curstackinfo;
…		…
295	PL_scopestack_ix = c->scopestack_ix;	305	PL_scopestack_ix = c->scopestack_ix;
296	PL_scopestack_max = c->scopestack_max;	306	PL_scopestack_max = c->scopestack_max;
297	PL_savestack = c->savestack;	307	PL_savestack = c->savestack;
298	PL_savestack_ix = c->savestack_ix;	308	PL_savestack_ix = c->savestack_ix;
299	PL_savestack_max = c->savestack_max;	309	PL_savestack_max = c->savestack_max;
300	#if PERL_VERSION < 9	310	#if !PERL_VERSION_ATLEAST (5,9,0)
301	PL_retstack = c->retstack;	311	PL_retstack = c->retstack;
302	PL_retstack_ix = c->retstack_ix;	312	PL_retstack_ix = c->retstack_ix;
303	PL_retstack_max = c->retstack_max;	313	PL_retstack_max = c->retstack_max;
304	#endif	314	#endif
305	PL_curpm = c->curpm;	315	PL_curpm = c->curpm;
306	PL_curcop = c->curcop;	316	PL_curcop = c->curcop;
307	PL_top_env = c->top_env;
308		317
309	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
310	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
311	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
312		321
…		…
319	{	328	{
320	AV padlist = (AV )POPs;	329	AV padlist = (AV )POPs;
321		330
322	if (padlist)	331	if (padlist)
323	{	332	{
324	put_padlist (aTHX_ cv); /* mark this padlist as available */	333	put_padlist (cv); /* mark this padlist as available */
325	CvPADLIST(cv) = padlist;	334	CvPADLIST(cv) = padlist;
326	}	335	}
327		336
328	++CvDEPTH(cv);	337	++CvDEPTH(cv);
329	}	338	}
…		…
331	PUTBACK;	340	PUTBACK;
332	}	341	}
333	}	342	}
334		343
335	static void	344	static void
336	save_state(pTHX_ Coro__State c, int flags)	345	save_state(Coro__State c, int flags)
337	{	346	{
338	{	347	{
339	dSP;	348	dSP;
340	I32 cxix = cxstack_ix;	349	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	350	PERL_CONTEXT *ccstk = cxstack;
…		…
369	}	378	}
370		379
371	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST(cv));
372	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
373		382
374	get_padlist (aTHX_ cv);	383	get_padlist (cv);
375	}	384	}
376	}	385	}
377	#ifdef CXt_FORMAT	386	#ifdef CXt_FORMAT
378	else if (CxTYPE(cx) == CXt_FORMAT)	387	else if (CxTYPE(cx) == CXt_FORMAT)
379	{	388	{
…		…
423	c->scopestack_ix = PL_scopestack_ix;	432	c->scopestack_ix = PL_scopestack_ix;
424	c->scopestack_max = PL_scopestack_max;	433	c->scopestack_max = PL_scopestack_max;
425	c->savestack = PL_savestack;	434	c->savestack = PL_savestack;
426	c->savestack_ix = PL_savestack_ix;	435	c->savestack_ix = PL_savestack_ix;
427	c->savestack_max = PL_savestack_max;	436	c->savestack_max = PL_savestack_max;
428	#if PERL_VERSION < 9	437	#if !PERL_VERSION_ATLEAST (5,9,0)
429	c->retstack = PL_retstack;	438	c->retstack = PL_retstack;
430	c->retstack_ix = PL_retstack_ix;	439	c->retstack_ix = PL_retstack_ix;
431	c->retstack_max = PL_retstack_max;	440	c->retstack_max = PL_retstack_max;
432	#endif	441	#endif
433	c->curpm = PL_curpm;	442	c->curpm = PL_curpm;
434	c->curcop = PL_curcop;	443	c->curcop = PL_curcop;
435	c->top_env = PL_top_env;
436	}	444	}
437		445
438	/*	446	/*
439	* allocate various perl stacks. This is an exact copy	447	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	448	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	449	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	450	* not usually need a lot of stackspace.
443	*/	451	*/
444	static void	452	static void
445	coro_init_stacks (pTHX)	453	coro_init_stacks ()
446	{	454	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
450	PL_curstackinfo->si_type = PERLSI_MAIN;	456	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	457	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		459
…		…
474		480
475	New(54,PL_savestack,96,ANY);	481	New(54,PL_savestack,96,ANY);
476	PL_savestack_ix = 0;	482	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	483	PL_savestack_max = 96;
478		484
479	#if PERL_VERSION < 9	485	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	486	New(54,PL_retstack,8,OP*);
481	PL_retstack_ix = 0;	487	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	488	PL_retstack_max = 8;
483	#endif	489	#endif
484
485	UNLOCK;
486	}	490	}
487		491
488	/*	492	/*
489	* destroy the stacks, the callchain etc...	493	* destroy the stacks, the callchain etc...
490	*/	494	*/
491	static void	495	static void
492	destroy_stacks(pTHX)	496	destroy_stacks()
493	{	497	{
494	if (!IN_DESTRUCT)	498	if (!IN_DESTRUCT)
495	{	499	{
496	/* is this ugly, I ask? */	500	/* is this ugly, I ask? */
497	LEAVE_SCOPE (0);	501	LEAVE_SCOPE (0);
…		…
528		532
529	Safefree (PL_tmps_stack);	533	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	534	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	535	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	536	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	537	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	538	Safefree (PL_retstack);
535	#endif	539	#endif
536	}	540	}
537		541
538	static void	542	static void
539	allocate_stack (Coro__State ctx, int alloc)	543	setup_coro (struct coro *coro)
540	{
541	coro_stack *stack;
542
543	New (0, stack, 1, coro_stack);
544
545	stack->refcnt = 1;
546	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;
548
549	if (alloc)
550	{
551	#if HAVE_MMAP
552	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
553	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
554	if (stack->sptr != (void *)-1)
555	{
556	# if STACKGUARD
557	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
558	# endif
559	}
560	else
561	#endif
562	{
563	stack->ssize = - (STACKSIZE * (long)sizeof (long));
564	New (0, stack->sptr, STACKSIZE, long);
565	}
566	}
567	else
568	stack->sptr = 0;
569
570	ctx->stack = stack;
571	}
572
573	static void
574	deallocate_stack (Coro__State ctx)
575	{
576	coro_stack *stack = ctx->stack;
577
578	ctx->stack = 0;
579
580	if (stack)
581	{
582	if (!--stack->refcnt)
583	{
584	#ifdef HAVE_MMAP
585	if (stack->ssize > 0 && stack->sptr)
586	munmap (stack->sptr, stack->ssize);
587	else
588	#endif
589	Safefree (stack->sptr);
590
591	Safefree (stack);
592	}
593	else if (ctx->gencnt == stack->gencnt)
594	--stack->usecnt;
595	}
596	}
597
598	static void
599	setup_coro (void *arg)
600	{	544	{
601	/*	545	/*
602	* emulate part of the perl startup here.	546	* emulate part of the perl startup here.
603	*/	547	*/
604	dTHX;	548	dTHX;
605	dSP;	549	dSP;
606	Coro__State ctx = (Coro__State)arg;	550	UNOP myop;
607	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	551	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
608		552
609	coro_init_stacks (aTHX);	553	coro_init_stacks ();
610	/PL_curcop = 0;/	554	/PL_curcop = 0;/
611	/PL_in_eval = PL_in_eval;/ /* inherit */	555	/PL_in_eval = PL_in_eval;/ /* inherit */
612	SvREFCNT_dec (GvAV (PL_defgv));	556	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	557	GvAV (PL_defgv) = coro->args; coro->args = 0;
614		558
615	SPAGAIN;	559	SPAGAIN;
616		560
617	if (ctx->stack)
618	{
619	ctx->cursp = 0;
620
621	PUSHMARK(SP);
622	PUTBACK;
623	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
624
625	if (SvTRUE (ERRSV))
626	croak (NULL);
627	else
628	croak ("FATAL: CCTXT coroutine returned!");
629	}
630	else
631	{
632	UNOP myop;
633
634	PL_op = (OP *)&myop;
635
636	Zero(&myop, 1, UNOP);	561	Zero (&myop, 1, UNOP);
637	myop.op_next = Nullop;	562	myop.op_next = Nullop;
638	myop.op_flags = OPf_WANT_VOID;	563	myop.op_flags = OPf_WANT_VOID;
639		564
		565	PL_op = (OP *)&myop;
		566
640	PUSHMARK(SP);	567	PUSHMARK(SP);
641	XPUSHs (sub_init);	568	XPUSHs (sub_init);
642	/*
643	* the next line is slightly wrong, as PL_op->op_next
644	* is actually being executed so we skip the first op.
645	* that doesn't matter, though, since it is only
646	* pp_nextstate and we never return...
647	* ah yes, and I don't care anyways ;)
648	*/
649	PUTBACK;	569	PUTBACK;
650	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	570	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
651	SPAGAIN;	571	SPAGAIN;
652		572
653	ENTER; /* necessary e.g. for dounwind */	573	ENTER; /* necessary e.g. for dounwind */
654	}
655	}	574	}
656		575
657	static void	576	static void
658	continue_coro (void *arg)	577	free_coro_mortal ()
659	{	578	{
660	/*
661	* this is a _very_ stripped down perl interpreter ;)
662	*/
663	dTHX;
664	Coro__State ctx = (Coro__State)arg;
665
666	PL_top_env = &ctx->start_env;
667
668	ctx->cursp = 0;
669	PL_op = PL_op->op_next;
670	CALLRUNOPS(aTHX);
671
672	abort ();
673	}
674
675	static void
676	transfer (pTHX_ struct coro prev, struct coro next, int flags)
677	{
678	dSTACKLEVEL;
679
680	if (prev != next)
681	{
682	if (next->mainstack)
683	{
684	LOCK;
685	SAVE (prev, flags);
686	LOAD (next);
687	UNLOCK;
688
689	/* mark this state as in-use */
690	next->mainstack = 0;
691	next->tmps_ix = -2;
692
693	/* stacklevel changed? if yes, grab the stack for us! */
694	if (flags & TRANSFER_SAVE_CCTXT)
695	{
696	if (!prev->stack)
697	allocate_stack (prev, 0);
698	else if (prev->cursp != stacklevel
699	&& prev->stack->usecnt > 1)
700	{
701	prev->gencnt = ++prev->stack->gencnt;
702	prev->stack->usecnt = 1;
703	}
704
705	/* has our stack been invalidated? */
706	if (next->stack && next->stack->gencnt != next->gencnt)
707	{
708	deallocate_stack (next);
709	allocate_stack (next, 1);
710	coro_create (&(next->stack->cctx),
711	continue_coro, (void *)next,
712	next->stack->sptr, labs (next->stack->ssize));
713	}
714
715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
716	prev->cursp = stacklevel;
717	/* don't add any code here */
718	}
719	else
720	next->cursp = stacklevel;
721	}
722	else if (next->tmps_ix == -2)
723	croak ("tried to transfer to running coroutine");
724	else
725	{
726	LOCK;
727	SAVE (prev, -1); /* first get rid of the old state */
728	UNLOCK;
729
730	if (flags & TRANSFER_SAVE_CCTXT)
731	{
732	if (!prev->stack)
733	allocate_stack (prev, 0);
734
735	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
736	{
737	PL_top_env = &next->start_env;
738
739	setup_coro (next);
740	next->cursp = stacklevel;
741
742	prev->stack->refcnt++;
743	prev->stack->usecnt++;
744	next->stack = prev->stack;
745	next->gencnt = prev->gencnt;
746	}
747	else
748	{
749	assert (!next->stack);
750	allocate_stack (next, 1);
751	coro_create (&(next->stack->cctx),
752	setup_coro, (void *)next,
753	next->stack->sptr, labs (next->stack->ssize));
754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
755	prev->cursp = stacklevel;
756	/* don't add any code here */
757	}
758	}
759	else
760	{
761	setup_coro (next);
762	next->cursp = stacklevel;
763	}
764	}
765	}
766
767	LOCK;
768	if (coro_mortal)	579	if (coro_mortal)
769	{	580	{
770	SvREFCNT_dec (coro_mortal);	581	SvREFCNT_dec (coro_mortal);
771	coro_mortal = 0;	582	coro_mortal = 0;
772	}	583	}
		584	}
		585
		586	static void NOINLINE
		587	prepare_cctx (coro_stack *cctx)
		588	{
		589	dSP;
		590	UNOP myop;
		591
		592	Zero (&myop, 1, UNOP);
		593	myop.op_next = PL_op;
		594	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		595
		596	PUSHMARK(SP);
		597	EXTEND (SP, 2);
		598	PUSHs (newSViv (PTR2IV (cctx)));
		599	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
		600	PUTBACK;
		601	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		602	SPAGAIN;
		603	}
		604
		605	static void
		606	coro_run (void *arg)
		607	{
		608	/*
		609	* this is a _very_ stripped down perl interpreter ;)
		610	*/
773	UNLOCK;	611	UNLOCK;
774	}
775		612
776	#define SV_CORO(sv,func) \	613	PL_top_env = &PL_start_env;
777	do { \	614	prepare_cctx ((coro_stack *)arg);
778	if (SvROK (sv)) \
779	sv = SvRV (sv); \
780	\
781	if (SvTYPE (sv) == SVt_PVHV) \
782	{ \
783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
784	\
785	if (!he) \
786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
787	\
788	(sv) = SvRV (HeVAL(he)); \
789	} \
790	\
791	/* must also be changed inside Coro::Cont::yield */ \
792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
794	\
795	} while(0)
796		615
797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	616	/* somebody will hit me for both perl_run and PL_restartop */
		617	perl_run (PERL_GET_CONTEXT);
798		618
		619	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
		620	abort ();
		621	}
		622
		623	static coro_stack *
		624	stack_new ()
		625	{
		626	coro_stack *stack;
		627
		628	New (0, stack, 1, coro_stack);
		629
		630	#if HAVE_MMAP
		631
		632	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		633	/* mmap suppsedly does allocate-on-write for us */
		634	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		635
		636	if (stack->sptr == (void *)-1)
		637	{
		638	perror ("FATAL: unable to mmap stack for coroutine");
		639	_exit (EXIT_FAILURE);
		640	}
		641
		642	# if STACKGUARD
		643	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		644	# endif
		645
		646	#else
		647
		648	stack->ssize = STACKSIZE * (long)sizeof (long);
		649	New (0, stack->sptr, STACKSIZE, long);
		650
		651	if (!stack->sptr)
		652	{
		653	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		654	_exit (EXIT_FAILURE);
		655	}
		656
		657	#endif
		658
		659	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		660
		661	return stack;
		662	}
		663
		664	static void
		665	stack_free (coro_stack *stack)
		666	{
		667	if (!stack)
		668	return;
		669
		670	#if HAVE_MMAP
		671	munmap (stack->sptr, stack->ssize);
		672	#else
		673	Safefree (stack->sptr);
		674	#endif
		675
		676	Safefree (stack);
		677	}
		678
		679	static coro_stack *stack_first;
		680
		681	static coro_stack *
		682	stack_get ()
		683	{
		684	coro_stack *stack;
		685
		686	if (stack_first)
		687	{
		688	stack = stack_first;
		689	stack_first = stack->next;
		690	}
		691	else
		692	{
		693	stack = stack_new ();
		694	PL_op = PL_op->op_next;
		695	}
		696
		697	return stack;
		698	}
		699
		700	static void
		701	stack_put (coro_stack *stack)
		702	{
		703	stack->next = stack_first;
		704	stack_first = stack;
		705	}
		706
		707	/* never call directly, always through the coro_state_transfer global variable */
		708	static void NOINLINE
		709	transfer (struct coro prev, struct coro next, int flags)
		710	{
		711	dSTACKLEVEL;
		712
		713	/* sometimes transfer is only called to set idle_sp */
		714	if (flags == TRANSFER_SET_STACKLEVEL)
		715	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		716	else if (prev != next)
		717	{
		718	coro_stack *prev__stack;
		719
		720	LOCK;
		721
		722	if (next->mainstack)
		723	{
		724	/* coroutine already started */
		725	SAVE (prev, flags);
		726	LOAD (next);
		727	}
		728	else
		729	{
		730	/* need to start coroutine */
		731	/* first get rid of the old state */
		732	SAVE (prev, -1);
		733	/* setup coroutine call */
		734	setup_coro (next);
		735	/* need a stack */
		736	next->stack = 0;
		737	}
		738
		739	if (!prev->stack)
		740	/* create a new empty context */
		741	Newz (0, prev->stack, 1, coro_stack);
		742
		743	prev__stack = prev->stack;
		744
		745	/* possibly "free" the stack */
		746	if (prev__stack->idle_sp == STACKLEVEL)
		747	{
		748	stack_put (prev__stack);
		749	prev->stack = 0;
		750	}
		751
		752	if (!next->stack)
		753	next->stack = stack_get ();
		754
		755	if (prev__stack != next->stack)
		756	{
		757	prev__stack->top_env = PL_top_env;
		758	PL_top_env = next->stack->top_env;
		759	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		760	}
		761
		762	free_coro_mortal ();
		763
		764	UNLOCK;
		765	}
		766	}
		767
		768	struct transfer_args
		769	{
		770	struct coro prev, next;
		771	int flags;
		772	};
		773
		774	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
		775
		776	static void
		777	coro_state_destroy (struct coro *coro)
		778	{
		779	if (coro->refcnt--)
		780	return;
		781
		782	if (coro->mainstack && coro->mainstack != main_mainstack)
		783	{
		784	struct coro temp;
		785
		786	SAVE ((&temp), TRANSFER_SAVE_ALL);
		787	LOAD (coro);
		788
		789	destroy_stacks ();
		790
		791	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		792
		793	coro->mainstack = 0;
		794	}
		795
		796	stack_free (coro->stack);
		797	SvREFCNT_dec (coro->args);
		798	Safefree (coro);
		799	}
		800
799	static void	801	static int
		802	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		803	{
		804	struct coro coro = (struct coro )mg->mg_ptr;
		805	mg->mg_ptr = 0;
		806
		807	coro_state_destroy (coro);
		808
		809	return 0;
		810	}
		811
		812	static int
		813	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		814	{
		815	struct coro coro = (struct coro )mg->mg_ptr;
		816
		817	++coro->refcnt;
		818
		819	return 0;
		820	}
		821
		822	static MGVTBL coro_state_vtbl = {
		823	0, 0, 0, 0,
		824	coro_state_clear,
		825	0,
		826	#ifdef MGf_DUP
		827	coro_state_dup,
		828	#endif
		829	};
		830
		831	static struct coro *
		832	SvSTATE (SV *coro)
		833	{
		834	HV *stash;
		835	MAGIC *mg;
		836
		837	if (SvROK (coro))
		838	coro = SvRV (coro);
		839
		840	stash = SvSTASH (coro);
		841	if (stash != coro_stash && stash != coro_state_stash)
		842	{
		843	/* very slow, but rare, check */
		844	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		845	croak ("Coro::State object required");
		846	}
		847
		848	mg = SvMAGIC (coro);
		849	assert (mg->mg_type == PERL_MAGIC_ext);
		850	return (struct coro *)mg->mg_ptr;
		851	}
		852
		853	static void
		854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		855	{
		856	ta->prev = SvSTATE (prev);
		857	ta->next = SvSTATE (next);
		858	ta->flags = flags;
		859	}
		860
		861	static void
800	api_transfer(pTHX_ SV prev, SV next, int flags)	862	api_transfer (SV prev, SV next, int flags)
801	{	863	{
802	SV_CORO (prev, "Coro::transfer");	864	dTHX;
803	SV_CORO (next, "Coro::transfer");	865	struct transfer_args ta;
804		866
805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	867	prepare_transfer (&ta, prev, next, flags);
		868	TRANSFER (ta);
806	}	869	}
807		870
808	/ Coro ******************************************************************/	871	/ Coro ******************************************************************/
809		872
810	#define PRIO_MAX 3	873	#define PRIO_MAX 3
…		…
814	#define PRIO_IDLE -3	877	#define PRIO_IDLE -3
815	#define PRIO_MIN -4	878	#define PRIO_MIN -4
816		879
817	/* for Coro.pm */	880	/* for Coro.pm */
818	static GV coro_current, coro_idle;	881	static GV coro_current, coro_idle;
819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
820	static int coro_nready;	883	static int coro_nready;
821		884
822	static void	885	static void
823	coro_enq (pTHX_ SV *sv)	886	coro_enq (SV *sv)
824	{	887	{
825	SV **xprio;
826	int prio;	888	int prio;
827		889
828	if (SvTYPE (sv) != SVt_PVHV)	890	if (SvTYPE (sv) != SVt_PVHV)
829	croak ("Coro::ready tried to enqueue something that is not a coroutine");	891	croak ("Coro::ready tried to enqueue something that is not a coroutine");
830		892
831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	893	prio = SvSTATE (sv)->prio;
832	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
833
834	prio = prio > PRIO_MAX ? PRIO_MAX
835	: prio < PRIO_MIN ? PRIO_MIN
836	: prio;
837		894
838	av_push (coro_ready [prio - PRIO_MIN], sv);	895	av_push (coro_ready [prio - PRIO_MIN], sv);
839	coro_nready++;	896	coro_nready++;
840	}	897	}
841		898
842	static SV *	899	static SV *
843	coro_deq (pTHX_ int min_prio)	900	coro_deq (int min_prio)
844	{	901	{
845	int prio = PRIO_MAX - PRIO_MIN;	902	int prio = PRIO_MAX - PRIO_MIN;
846		903
847	min_prio -= PRIO_MIN;	904	min_prio -= PRIO_MIN;
848	if (min_prio < 0)	905	if (min_prio < 0)
849	min_prio = 0;	906	min_prio = 0;
850		907
851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	908	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
852	if (av_len (coro_ready[prio]) >= 0)	909	if (AvFILLp (coro_ready [prio]) >= 0)
853	{	910	{
854	coro_nready--;	911	coro_nready--;
855	return av_shift (coro_ready[prio]);	912	return av_shift (coro_ready [prio]);
856	}	913	}
857		914
858	return 0;	915	return 0;
859	}	916	}
860		917
…		…
865		922
866	if (SvROK (coro))	923	if (SvROK (coro))
867	coro = SvRV (coro);	924	coro = SvRV (coro);
868		925
869	LOCK;	926	LOCK;
870	coro_enq (aTHX_ SvREFCNT_inc (coro));	927	coro_enq (SvREFCNT_inc (coro));
871	UNLOCK;	928	UNLOCK;
872	}	929	}
873		930
874	static void	931	static void
		932	prepare_schedule (struct transfer_args *ta)
		933	{
		934	SV current, prev, *next;
		935
		936	current = GvSV (coro_current);
		937
		938	for (;;)
		939	{
		940	LOCK;
		941	next = coro_deq (PRIO_MIN);
		942	UNLOCK;
		943
		944	if (next)
		945	break;
		946
		947	{
		948	dSP;
		949
		950	ENTER;
		951	SAVETMPS;
		952
		953	PUSHMARK (SP);
		954	PUTBACK;
		955	call_sv (GvSV (coro_idle), G_DISCARD);
		956
		957	FREETMPS;
		958	LEAVE;
		959	}
		960	}
		961
		962	prev = SvRV (current);
		963	SvRV (current) = next;
		964
		965	/* free this only after the transfer */
		966	LOCK;
		967	free_coro_mortal ();
		968	UNLOCK;
		969	coro_mortal = prev;
		970
		971	ta->prev = SvSTATE (prev);
		972	ta->next = SvSTATE (next);
		973	ta->flags = TRANSFER_SAVE_ALL;
		974	}
		975
		976	static void
		977	prepare_cede (struct transfer_args *ta)
		978	{
		979	LOCK;
		980	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		981	UNLOCK;
		982
		983	prepare_schedule (ta);
		984	}
		985
		986	static void
875	api_schedule (void)	987	api_schedule (void)
876	{	988	{
877	dTHX;	989	dTHX;
		990	struct transfer_args ta;
878		991
879	SV prev, next;	992	prepare_schedule (&ta);
880		993	TRANSFER (ta);
881	LOCK;
882
883	prev = SvRV (GvSV (coro_current));
884	next = coro_deq (aTHX_ PRIO_MIN);
885
886	if (!next)
887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
888
889	/* free this only after the transfer */
890	coro_mortal = prev;
891	SV_CORO (prev, "Coro::schedule");
892
893	SvRV (GvSV (coro_current)) = next;
894
895	SV_CORO (next, "Coro::schedule");
896
897	UNLOCK;
898
899	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
901	}	994	}
902		995
903	static void	996	static void
904	api_cede (void)	997	api_cede (void)
905	{	998	{
906	dTHX;	999	dTHX;
		1000	struct transfer_args ta;
907		1001
908	LOCK;	1002	prepare_cede (&ta);
909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1003	TRANSFER (ta);
910	UNLOCK;
911
912	api_schedule ();
913	}	1004	}
914		1005
915	MODULE = Coro::State PACKAGE = Coro::State	1006	MODULE = Coro::State PACKAGE = Coro::State
916		1007
917	PROTOTYPES: ENABLE	1008	PROTOTYPES: DISABLE
918		1009
919	BOOT:	1010	BOOT:
920	{ /* {} necessary for stoopid perl-5.6.x */	1011	{
921	#ifdef USE_ITHREADS	1012	#ifdef USE_ITHREADS
922	MUTEX_INIT (&coro_mutex);	1013	MUTEX_INIT (&coro_mutex);
923	#endif	1014	#endif
924	BOOT_PAGESIZE;	1015	BOOT_PAGESIZE;
925		1016
926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1017	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
929		1018
930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1019	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1020	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1021	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
934		1022
935	main_mainstack = PL_mainstack;	1023	main_mainstack = PL_mainstack;
936		1024
937	coroapi.ver = CORO_API_VERSION;	1025	coroapi.ver = CORO_API_VERSION;
938	coroapi.transfer = api_transfer;	1026	coroapi.transfer = api_transfer;
939	}
940		1027
941	Coro::State	1028	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
942	_newprocess(args)	1029	}
943	SV * args	1030
944	PROTOTYPE: $	1031	SV *
		1032	new (char *klass, ...)
945	CODE:	1033	CODE:
946	Coro__State coro;	1034	{
		1035	struct coro *coro;
		1036	HV *hv;
		1037	int i;
947		1038
948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
949	croak ("Coro::State::_newprocess expects an arrayref");
950
951	Newz (0, coro, 1, struct coro);	1039	Newz (0, coro, 1, struct coro);
		1040	coro->args = newAV ();
952		1041
953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1042	hv = newHV ();
		1043	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1044	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1045
		1046	for (i = 1; i < items; i++)
		1047	av_push (coro->args, newSVsv (ST (i)));
		1048
954	/coro->mainstack = 0; //actual work is done inside transfer /	1049	/coro->mainstack = 0; //actual work is done inside transfer /
955	/coro->stack = 0;/	1050	/coro->stack = 0;/
956		1051	}
957	/* same as JMPENV_BOOTSTRAP */
958	/* we might be able to recycle start_env, but safe is safe */
959	/Zero(&coro->start_env, 1, JMPENV);/
960	coro->start_env.je_ret = -1;
961	coro->start_env.je_mustcatch = TRUE;
962
963	RETVAL = coro;
964	OUTPUT:	1052	OUTPUT:
965	RETVAL	1053	RETVAL
966		1054
967	void	1055	void
968	transfer(prev, next, flags)	1056	_set_stacklevel (...)
969	SV *prev	1057	ALIAS:
970	SV *next	1058	Coro::State::transfer = 1
971	int flags	1059	Coro::schedule = 2
972	PROTOTYPE: @	1060	Coro::cede = 3
		1061	Coro::Cont::yield = 4
973	CODE:	1062	CODE:
974	PUTBACK;	1063	{
975	SV_CORO (next, "Coro::transfer");	1064	struct transfer_args ta;
976	SV_CORO (prev, "Coro::transfer");	1065
977	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1066	switch (ix)
978	SPAGAIN;	1067	{
		1068	case 0:
		1069	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1070	ta.next = 0;
		1071	ta.flags = TRANSFER_SET_STACKLEVEL;
		1072	break;
		1073
		1074	case 1:
		1075	if (items != 3)
		1076	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1077
		1078	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1079	break;
		1080
		1081	case 2:
		1082	prepare_schedule (&ta);
		1083	break;
		1084
		1085	case 3:
		1086	prepare_cede (&ta);
		1087	break;
		1088
		1089	case 4:
		1090	{
		1091	SV *yieldstack;
		1092	SV *sv;
		1093	AV *defav = GvAV (PL_defgv);
		1094
		1095	yieldstack = *hv_fetch (
		1096	(HV *)SvRV (GvSV (coro_current)),
		1097	"yieldstack", sizeof ("yieldstack") - 1,
		1098	0
		1099	);
		1100
		1101	/* set up @_ -- ugly */
		1102	av_clear (defav);
		1103	av_fill (defav, items - 1);
		1104	while (items--)
		1105	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1106
		1107	sv = av_pop ((AV *)SvRV (yieldstack));
		1108	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1109	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1110	ta.flags = 0;
		1111	SvREFCNT_dec (sv);
		1112	}
		1113	break;
		1114
		1115	}
		1116
		1117	TRANSFER (ta);
		1118	}
979		1119
980	void	1120	void
981	DESTROY(coro)	1121	_clone_state_from (SV dst, SV src)
982	Coro::State coro	1122	CODE:
983	CODE:	1123	{
		1124	struct coro *coro_src = SvSTATE (src);
984		1125
985	if (coro->mainstack && coro->mainstack != main_mainstack)	1126	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
986	{
987	struct coro temp;
988		1127
989	PUTBACK;	1128	++coro_src->refcnt;
990	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1129	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
991	LOAD (aTHX_ coro);	1130	}
992	SPAGAIN;
993
994	destroy_stacks (aTHX);
995
996	LOAD ((&temp)); /* this will get rid of defsv etc.. */
997	SPAGAIN;
998
999	coro->mainstack = 0;
1000	}
1001
1002	deallocate_stack (coro);
1003	SvREFCNT_dec (coro->args);
1004	Safefree (coro);
1005		1131
1006	void	1132	void
1007	_exit(code)	1133	_exit (code)
1008	int code	1134	int code
1009	PROTOTYPE: $	1135	PROTOTYPE: $
1010	CODE:	1136	CODE:
1011	_exit (code);	1137	_exit (code);
1012		1138
1013	MODULE = Coro::State PACKAGE = Coro::Cont
1014
1015	# this is slightly dirty (should expose a c-level api)
1016
1017	void
1018	yield(...)
1019	PROTOTYPE: @
1020	CODE:
1021	SV *yieldstack;
1022	SV *sv;
1023	AV *defav = GvAV (PL_defgv);
1024	struct coro prev, next;
1025
1026	yieldstack = *hv_fetch (
1027	(HV *)SvRV (GvSV (coro_current)),
1028	"yieldstack", sizeof ("yieldstack") - 1,
1029	0
1030	);
1031
1032	/* set up @_ -- ugly */
1033	av_clear (defav);
1034	av_fill (defav, items - 1);
1035	while (items--)
1036	av_store (defav, items, SvREFCNT_inc (ST(items)));
1037
1038	sv = av_pop ((AV *)SvRV (yieldstack));
1039	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1040	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1041	SvREFCNT_dec (sv);
1042
1043	transfer (aTHX_ prev, next, 0);
1044
1045	MODULE = Coro::State PACKAGE = Coro	1139	MODULE = Coro::State PACKAGE = Coro
1046		1140
1047	# this is slightly dirty (should expose a c-level api)
1048
1049	BOOT:	1141	BOOT:
1050	{	1142	{
1051	int i;	1143	int i;
		1144
1052	HV *stash = gv_stashpv ("Coro", TRUE);	1145	coro_stash = gv_stashpv ("Coro", TRUE);
1053		1146
1054	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1147	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1055	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1148	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1056	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1149	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1057	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1150	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1058	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1151	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1059	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1152	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1060		1153
1061	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1154	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1062	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1155	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1063		1156
1064	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1157	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1072	coroapi.ready = api_ready;	1165	coroapi.ready = api_ready;
1073	coroapi.nready = &coro_nready;	1166	coroapi.nready = &coro_nready;
1074	coroapi.current = coro_current;	1167	coroapi.current = coro_current;
1075		1168
1076	GCoroAPI = &coroapi;	1169	GCoroAPI = &coroapi;
1077	sv_setiv(sv, (IV)&coroapi);	1170	sv_setiv (sv, (IV)&coroapi);
1078	SvREADONLY_on(sv);	1171	SvREADONLY_on (sv);
1079	}	1172	}
1080	}	1173	}
1081		1174
1082	#if !PERL_MICRO	1175	int
		1176	prio (Coro::State coro, int newprio = 0)
		1177	ALIAS:
		1178	nice = 1
		1179	CODE:
		1180	{
		1181	RETVAL = coro->prio;
		1182
		1183	if (items > 1)
		1184	{
		1185	if (ix)
		1186	newprio += coro->prio;
		1187
		1188	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1189	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1190
		1191	coro->prio = newprio;
		1192	}
		1193	}
1083		1194
1084	void	1195	void
1085	ready(self)	1196	ready (SV *self)
1086	SV * self
1087	PROTOTYPE: $	1197	PROTOTYPE: $
1088	CODE:	1198	CODE:
1089	api_ready (self);	1199	api_ready (self);
1090		1200
1091	#endif
1092
1093	int	1201	int
1094	nready(...)	1202	nready (...)
1095	PROTOTYPE:	1203	PROTOTYPE:
1096	CODE:	1204	CODE:
1097	RETVAL = coro_nready;	1205	RETVAL = coro_nready;
1098	OUTPUT:	1206	OUTPUT:
1099	RETVAL	1207	RETVAL
1100		1208
1101	void	1209	MODULE = Coro::State PACKAGE = Coro::AIO
1102	schedule(...)
1103	PROTOTYPE:
1104	CODE:
1105	api_schedule ();
1106		1210
1107	void
1108	cede(...)
1109	PROTOTYPE:
1110	CODE:
1111	api_cede ();
1112
1113	# and these are hacks
1114	SV *	1211	SV *
1115	_aio_get_state ()	1212	_get_state ()
1116	CODE:	1213	CODE:
1117	{	1214	{
1118	struct {	1215	struct {
1119	int errorno;	1216	int errorno;
1120	int laststype;	1217	int laststype;
…		…
1131	}	1228	}
1132	OUTPUT:	1229	OUTPUT:
1133	RETVAL	1230	RETVAL
1134		1231
1135	void	1232	void
1136	_aio_set_state (char *data_)	1233	_set_state (char *data_)
1137	PROTOTYPE: $	1234	PROTOTYPE: $
1138	CODE:	1235	CODE:
1139	{	1236	{
1140	struct {	1237	struct {
1141	int errorno;	1238	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs. Revision 1.101 by root, Mon Nov 27 00:08:18 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs.
Revision 1.101 by root, Mon Nov 27 00:08:18 2006 UTC