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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.80 by root, Thu Nov 2 20:00:00 2006 UTC vs.
Revision 1.103 by root, Mon Nov 27 01:33:30 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 (5,6,0)
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	coro_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;
605	dSP;
606	Coro__State ctx = (Coro__State)arg;
607	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
608		548
609	coro_init_stacks (aTHX);	549	coro_init_stacks ();
		550
610	/PL_curcop = 0;/	551	PL_curcop = 0;
611	/PL_in_eval = PL_in_eval;/ /* inherit */	552	PL_in_eval = 0;
		553	PL_curpm = 0;
		554
		555	{
		556	dSP;
		557	LOGOP myop;
		558
		559	/* I have no idea why this is needed, but it is */
		560	PUSHMARK (SP);
		561
612	SvREFCNT_dec (GvAV (PL_defgv));	562	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	563	GvAV (PL_defgv) = coro->args; coro->args = 0;
614		564
615	SPAGAIN;
616
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	Zero(&myop, 1, UNOP);	565	Zero (&myop, 1, LOGOP);
635	myop.op_next = Nullop;	566	myop.op_next = Nullop;
636	myop.op_flags = OPf_WANT_VOID;	567	myop.op_flags = OPf_WANT_VOID;
637		568
638	PL_op = (OP *)&myop;	569	PL_op = (OP *)&myop;
639		570
640	PUSHMARK(SP);	571	PUSHMARK (SP);
641	XPUSHs (sub_init);	572	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
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;	573	PUTBACK;
650	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
651	SPAGAIN;	575	SPAGAIN;
652		576
653	ENTER; /* necessary e.g. for dounwind */	577	ENTER; /* necessary e.g. for dounwind */
654	}	578	}
655	}	579	}
656		580
657	static void	581	static void
658	continue_coro (void *arg)	582	free_coro_mortal ()
659	{	583	{
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)	584	if (coro_mortal)
769	{	585	{
770	SvREFCNT_dec (coro_mortal);	586	SvREFCNT_dec (coro_mortal);
771	coro_mortal = 0;	587	coro_mortal = 0;
772	}	588	}
		589	}
		590
		591	static void NOINLINE
		592	prepare_cctx (coro_stack *cctx)
		593	{
		594	dSP;
		595	LOGOP myop;
		596
		597	Zero (&myop, 1, LOGOP);
		598	myop.op_next = PL_op;
		599	myop.op_flags = OPf_WANT_VOID;
		600
		601	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
		602
		603	PUSHMARK (SP);
		604	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
		605	PUTBACK;
		606	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		607	SPAGAIN;
		608	}
		609
		610	static void
		611	coro_run (void *arg)
		612	{
		613	/* coro_run is the alternative epilogue of transfer() */
773	UNLOCK;	614	UNLOCK;
774	}
775		615
776	#define SV_CORO(sv,func) \	616	/*
777	do { \	617	* this is a _very_ stripped down perl interpreter ;)
778	if (SvROK (sv)) \	618	*/
779	sv = SvRV (sv); \	619	PL_top_env = &PL_start_env;
780	\	620	/* inject call to cctx_init */
781	if (SvTYPE (sv) == SVt_PVHV) \	621	prepare_cctx ((coro_stack *)arg);
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		622
797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	623	/* somebody will hit me for both perl_run and PL_restartop */
		624	perl_run (PL_curinterp);
798		625
		626	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
		627	abort ();
		628	}
		629
		630	static coro_stack *
		631	stack_new ()
		632	{
		633	coro_stack *stack;
		634
		635	New (0, stack, 1, coro_stack);
		636
		637	#if HAVE_MMAP
		638
		639	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		640	/* mmap suppsedly does allocate-on-write for us */
		641	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		642
		643	if (stack->sptr == (void *)-1)
		644	{
		645	perror ("FATAL: unable to mmap stack for coroutine");
		646	_exit (EXIT_FAILURE);
		647	}
		648
		649	# if STACKGUARD
		650	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		651	# endif
		652
		653	#else
		654
		655	stack->ssize = STACKSIZE * (long)sizeof (long);
		656	New (0, stack->sptr, STACKSIZE, long);
		657
		658	if (!stack->sptr)
		659	{
		660	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		661	_exit (EXIT_FAILURE);
		662	}
		663
		664	#endif
		665
		666	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		667
		668	return stack;
		669	}
		670
		671	static void
		672	stack_free (coro_stack *stack)
		673	{
		674	if (!stack)
		675	return;
		676
		677	#if HAVE_MMAP
		678	munmap (stack->sptr, stack->ssize);
		679	#else
		680	Safefree (stack->sptr);
		681	#endif
		682
		683	Safefree (stack);
		684	}
		685
		686	static coro_stack *stack_first;
		687	static int cctx_count, cctx_idle;
		688
		689	static coro_stack *
		690	stack_get ()
		691	{
		692	coro_stack *stack;
		693
		694	if (stack_first)
		695	{
		696	--cctx_idle;
		697	stack = stack_first;
		698	stack_first = stack->next;
		699	}
		700	else
		701	{
		702	++cctx_count;
		703	stack = stack_new ();
		704	PL_op = PL_op->op_next;
		705	}
		706
		707	return stack;
		708	}
		709
		710	static void
		711	stack_put (coro_stack *stack)
		712	{
		713	++cctx_idle;
		714	stack->next = stack_first;
		715	stack_first = stack;
		716	}
		717
		718	/* never call directly, always through the coro_state_transfer global variable */
		719	static void NOINLINE
		720	transfer (struct coro prev, struct coro next, int flags)
		721	{
		722	dSTACKLEVEL;
		723
		724	/* sometimes transfer is only called to set idle_sp */
		725	if (flags == TRANSFER_SET_STACKLEVEL)
		726	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		727	else if (prev != next)
		728	{
		729	coro_stack *prev__stack;
		730
		731	LOCK;
		732
		733	if (next->mainstack)
		734	{
		735	/* coroutine already started */
		736	SAVE (prev, flags);
		737	LOAD (next);
		738	}
		739	else
		740	{
		741	/* need to start coroutine */
		742	/* first get rid of the old state */
		743	SAVE (prev, -1);
		744	/* setup coroutine call */
		745	setup_coro (next);
		746	/* need a stack */
		747	next->stack = 0;
		748	}
		749
		750	if (!prev->stack)
		751	/* create a new empty context */
		752	Newz (0, prev->stack, 1, coro_stack);
		753
		754	prev__stack = prev->stack;
		755
		756	/* possibly "free" the stack */
		757	if (prev__stack->idle_sp == STACKLEVEL)
		758	{
		759	stack_put (prev__stack);
		760	prev->stack = 0;
		761	}
		762
		763	if (!next->stack)
		764	next->stack = stack_get ();
		765
		766	if (prev__stack != next->stack)
		767	{
		768	prev__stack->top_env = PL_top_env;
		769	PL_top_env = next->stack->top_env;
		770	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		771	}
		772
		773	free_coro_mortal ();
		774
		775	UNLOCK;
		776	}
		777	}
		778
		779	struct transfer_args
		780	{
		781	struct coro prev, next;
		782	int flags;
		783	};
		784
		785	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
		786
		787	static void
		788	coro_state_destroy (struct coro *coro)
		789	{
		790	if (coro->refcnt--)
		791	return;
		792
		793	if (coro->mainstack && coro->mainstack != main_mainstack)
		794	{
		795	struct coro temp;
		796
		797	SAVE ((&temp), TRANSFER_SAVE_ALL);
		798	LOAD (coro);
		799
		800	coro_destroy_stacks ();
		801
		802	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		803
		804	coro->mainstack = 0;
		805	}
		806
		807	stack_free (coro->stack);
		808	SvREFCNT_dec (coro->args);
		809	Safefree (coro);
		810	}
		811
799	static void	812	static int
		813	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		814	{
		815	struct coro coro = (struct coro )mg->mg_ptr;
		816	mg->mg_ptr = 0;
		817
		818	coro_state_destroy (coro);
		819
		820	return 0;
		821	}
		822
		823	static int
		824	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		825	{
		826	struct coro coro = (struct coro )mg->mg_ptr;
		827
		828	++coro->refcnt;
		829
		830	return 0;
		831	}
		832
		833	static MGVTBL coro_state_vtbl = {
		834	0, 0, 0, 0,
		835	coro_state_clear,
		836	0,
		837	#ifdef MGf_DUP
		838	coro_state_dup,
		839	#else
		840	# define MGf_DUP 0
		841	#endif
		842	};
		843
		844	static struct coro *
		845	SvSTATE (SV *coro)
		846	{
		847	HV *stash;
		848	MAGIC *mg;
		849
		850	if (SvROK (coro))
		851	coro = SvRV (coro);
		852
		853	stash = SvSTASH (coro);
		854	if (stash != coro_stash && stash != coro_state_stash)
		855	{
		856	/* very slow, but rare, check */
		857	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		858	croak ("Coro::State object required");
		859	}
		860
		861	mg = SvMAGIC (coro);
		862	assert (mg->mg_type == PERL_MAGIC_ext);
		863	return (struct coro *)mg->mg_ptr;
		864	}
		865
		866	static void
		867	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		868	{
		869	ta->prev = SvSTATE (prev);
		870	ta->next = SvSTATE (next);
		871	ta->flags = flags;
		872	}
		873
		874	static void
800	api_transfer(pTHX_ SV prev, SV next, int flags)	875	api_transfer (SV prev, SV next, int flags)
801	{	876	{
802	SV_CORO (prev, "Coro::transfer");	877	dTHX;
803	SV_CORO (next, "Coro::transfer");	878	struct transfer_args ta;
804		879
805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	880	prepare_transfer (&ta, prev, next, flags);
		881	TRANSFER (ta);
806	}	882	}
807		883
808	/ Coro ******************************************************************/	884	/ Coro ******************************************************************/
809		885
810	#define PRIO_MAX 3	886	#define PRIO_MAX 3
…		…
814	#define PRIO_IDLE -3	890	#define PRIO_IDLE -3
815	#define PRIO_MIN -4	891	#define PRIO_MIN -4
816		892
817	/* for Coro.pm */	893	/* for Coro.pm */
818	static GV coro_current, coro_idle;	894	static GV coro_current, coro_idle;
819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
820	static int coro_nready;	896	static int coro_nready;
821		897
822	static void	898	static void
823	coro_enq (pTHX_ SV *sv)	899	coro_enq (SV *sv)
824	{	900	{
825	SV **xprio;
826	int prio;	901	int prio;
827		902
828	if (SvTYPE (sv) != SVt_PVHV)	903	if (SvTYPE (sv) != SVt_PVHV)
829	croak ("Coro::ready tried to enqueue something that is not a coroutine");	904	croak ("Coro::ready tried to enqueue something that is not a coroutine");
830		905
831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	906	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		907
838	av_push (coro_ready [prio - PRIO_MIN], sv);	908	av_push (coro_ready [prio - PRIO_MIN], sv);
839	coro_nready++;	909	coro_nready++;
840	}	910	}
841		911
842	static SV *	912	static SV *
843	coro_deq (pTHX_ int min_prio)	913	coro_deq (int min_prio)
844	{	914	{
845	int prio = PRIO_MAX - PRIO_MIN;	915	int prio = PRIO_MAX - PRIO_MIN;
846		916
847	min_prio -= PRIO_MIN;	917	min_prio -= PRIO_MIN;
848	if (min_prio < 0)	918	if (min_prio < 0)
849	min_prio = 0;	919	min_prio = 0;
850		920
851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	921	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
852	if (av_len (coro_ready[prio]) >= 0)	922	if (AvFILLp (coro_ready [prio]) >= 0)
853	{	923	{
854	coro_nready--;	924	coro_nready--;
855	return av_shift (coro_ready[prio]);	925	return av_shift (coro_ready [prio]);
856	}	926	}
857		927
858	return 0;	928	return 0;
859	}	929	}
860		930
…		…
865		935
866	if (SvROK (coro))	936	if (SvROK (coro))
867	coro = SvRV (coro);	937	coro = SvRV (coro);
868		938
869	LOCK;	939	LOCK;
870	coro_enq (aTHX_ SvREFCNT_inc (coro));	940	coro_enq (SvREFCNT_inc (coro));
871	UNLOCK;	941	UNLOCK;
872	}	942	}
873		943
874	static void	944	static void
		945	prepare_schedule (struct transfer_args *ta)
		946	{
		947	SV current, prev, *next;
		948
		949	current = GvSV (coro_current);
		950
		951	for (;;)
		952	{
		953	LOCK;
		954	next = coro_deq (PRIO_MIN);
		955	UNLOCK;
		956
		957	if (next)
		958	break;
		959
		960	{
		961	dSP;
		962
		963	ENTER;
		964	SAVETMPS;
		965
		966	PUSHMARK (SP);
		967	PUTBACK;
		968	call_sv (GvSV (coro_idle), G_DISCARD);
		969
		970	FREETMPS;
		971	LEAVE;
		972	}
		973	}
		974
		975	prev = SvRV (current);
		976	SvRV (current) = next;
		977
		978	/* free this only after the transfer */
		979	LOCK;
		980	free_coro_mortal ();
		981	UNLOCK;
		982	coro_mortal = prev;
		983
		984	ta->prev = SvSTATE (prev);
		985	ta->next = SvSTATE (next);
		986	ta->flags = TRANSFER_SAVE_ALL;
		987	}
		988
		989	static void
		990	prepare_cede (struct transfer_args *ta)
		991	{
		992	LOCK;
		993	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		994	UNLOCK;
		995
		996	prepare_schedule (ta);
		997	}
		998
		999	static void
875	api_schedule (void)	1000	api_schedule (void)
876	{	1001	{
877	dTHX;	1002	dTHX;
		1003	struct transfer_args ta;
878		1004
879	SV prev, next;	1005	prepare_schedule (&ta);
880		1006	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	}	1007	}
902		1008
903	static void	1009	static void
904	api_cede (void)	1010	api_cede (void)
905	{	1011	{
906	dTHX;	1012	dTHX;
		1013	struct transfer_args ta;
907		1014
908	LOCK;	1015	prepare_cede (&ta);
909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1016	TRANSFER (ta);
910	UNLOCK;
911
912	api_schedule ();
913	}	1017	}
914		1018
915	MODULE = Coro::State PACKAGE = Coro::State	1019	MODULE = Coro::State PACKAGE = Coro::State
916		1020
917	PROTOTYPES: ENABLE	1021	PROTOTYPES: DISABLE
918		1022
919	BOOT:	1023	BOOT:
920	{ /* {} necessary for stoopid perl-5.6.x */	1024	{
921	#ifdef USE_ITHREADS	1025	#ifdef USE_ITHREADS
922	MUTEX_INIT (&coro_mutex);	1026	MUTEX_INIT (&coro_mutex);
923	#endif	1027	#endif
924	BOOT_PAGESIZE;	1028	BOOT_PAGESIZE;
925		1029
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);	1030	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
929		1031
930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1032	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1033	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1034	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
934		1035
935	main_mainstack = PL_mainstack;	1036	main_mainstack = PL_mainstack;
936		1037
937	coroapi.ver = CORO_API_VERSION;	1038	coroapi.ver = CORO_API_VERSION;
938	coroapi.transfer = api_transfer;	1039	coroapi.transfer = api_transfer;
939	}
940		1040
941	Coro::State	1041	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
942	_newprocess(args)	1042	}
943	SV * args	1043
944	PROTOTYPE: $	1044	SV *
		1045	new (char *klass, ...)
945	CODE:	1046	CODE:
946	Coro__State coro;	1047	{
		1048	struct coro *coro;
		1049	HV *hv;
		1050	int i;
947		1051
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);	1052	Newz (0, coro, 1, struct coro);
		1053	coro->args = newAV ();
952		1054
953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1055	hv = newHV ();
		1056	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1057	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1058
		1059	for (i = 1; i < items; i++)
		1060	av_push (coro->args, newSVsv (ST (i)));
		1061
954	/coro->mainstack = 0; //actual work is done inside transfer /	1062	/coro->mainstack = 0; //actual work is done inside transfer /
955	/coro->stack = 0;/	1063	/coro->stack = 0;/
956		1064	}
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:	1065	OUTPUT:
965	RETVAL	1066	RETVAL
966		1067
967	void	1068	void
968	transfer(prev, next, flags)	1069	_set_stacklevel (...)
969	SV *prev	1070	ALIAS:
970	SV *next	1071	Coro::State::transfer = 1
971	int flags	1072	Coro::schedule = 2
972	PROTOTYPE: @	1073	Coro::cede = 3
		1074	Coro::Cont::yield = 4
973	CODE:	1075	CODE:
974	PUTBACK;	1076	{
975	SV_CORO (next, "Coro::transfer");	1077	struct transfer_args ta;
976	SV_CORO (prev, "Coro::transfer");	1078
977	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1079	switch (ix)
978	SPAGAIN;	1080	{
		1081	case 0:
		1082	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1083	ta.next = 0;
		1084	ta.flags = TRANSFER_SET_STACKLEVEL;
		1085	break;
		1086
		1087	case 1:
		1088	if (items != 3)
		1089	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1090
		1091	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1092	break;
		1093
		1094	case 2:
		1095	prepare_schedule (&ta);
		1096	break;
		1097
		1098	case 3:
		1099	prepare_cede (&ta);
		1100	break;
		1101
		1102	case 4:
		1103	{
		1104	SV *yieldstack;
		1105	SV *sv;
		1106	AV *defav = GvAV (PL_defgv);
		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	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1122	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1123	ta.flags = 0;
		1124	SvREFCNT_dec (sv);
		1125	}
		1126	break;
		1127
		1128	}
		1129
		1130	TRANSFER (ta);
		1131	}
979		1132
980	void	1133	void
981	DESTROY(coro)	1134	_clone_state_from (SV dst, SV src)
982	Coro::State coro	1135	CODE:
983	CODE:	1136	{
		1137	struct coro *coro_src = SvSTATE (src);
984		1138
985	if (coro->mainstack && coro->mainstack != main_mainstack)	1139	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
986	{
987	struct coro temp;
988		1140
989	PUTBACK;	1141	++coro_src->refcnt;
990	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1142	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
991	LOAD (aTHX_ coro);	1143	}
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		1144
1006	void	1145	void
1007	_exit(code)	1146	_exit (code)
1008	int code	1147	int code
1009	PROTOTYPE: $	1148	PROTOTYPE: $
1010	CODE:	1149	CODE:
1011	_exit (code);	1150	_exit (code);
1012		1151
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	1152	MODULE = Coro::State PACKAGE = Coro
1046		1153
1047	# this is slightly dirty (should expose a c-level api)
1048
1049	BOOT:	1154	BOOT:
1050	{	1155	{
1051	int i;	1156	int i;
		1157
1052	HV *stash = gv_stashpv ("Coro", TRUE);	1158	coro_stash = gv_stashpv ("Coro", TRUE);
1053		1159
1054	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1160	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1055	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1161	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1056	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1162	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1057	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1163	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1058	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1164	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1059	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1165	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1060		1166
1061	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1167	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1062	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1168	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1063		1169
1064	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1170	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1072	coroapi.ready = api_ready;	1178	coroapi.ready = api_ready;
1073	coroapi.nready = &coro_nready;	1179	coroapi.nready = &coro_nready;
1074	coroapi.current = coro_current;	1180	coroapi.current = coro_current;
1075		1181
1076	GCoroAPI = &coroapi;	1182	GCoroAPI = &coroapi;
1077	sv_setiv(sv, (IV)&coroapi);	1183	sv_setiv (sv, (IV)&coroapi);
1078	SvREADONLY_on(sv);	1184	SvREADONLY_on (sv);
1079	}	1185	}
1080	}	1186	}
1081		1187
1082	#if !PERL_MICRO	1188	int
		1189	prio (Coro::State coro, int newprio = 0)
		1190	ALIAS:
		1191	nice = 1
		1192	CODE:
		1193	{
		1194	RETVAL = coro->prio;
		1195
		1196	if (items > 1)
		1197	{
		1198	if (ix)
		1199	newprio += coro->prio;
		1200
		1201	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1202	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1203
		1204	coro->prio = newprio;
		1205	}
		1206	}
1083		1207
1084	void	1208	void
1085	ready(self)	1209	ready (SV *self)
1086	SV * self
1087	PROTOTYPE: $	1210	PROTOTYPE: $
1088	CODE:	1211	CODE:
1089	api_ready (self);	1212	api_ready (self);
1090		1213
1091	#endif
1092
1093	int	1214	int
1094	nready(...)	1215	nready (...)
1095	PROTOTYPE:	1216	PROTOTYPE:
1096	CODE:	1217	CODE:
1097	RETVAL = coro_nready;	1218	RETVAL = coro_nready;
1098	OUTPUT:	1219	OUTPUT:
1099	RETVAL	1220	RETVAL
1100		1221
1101	void	1222	MODULE = Coro::State PACKAGE = Coro::AIO
1102	schedule(...)
1103	PROTOTYPE:
1104	CODE:
1105	api_schedule ();
1106		1223
1107	void
1108	cede(...)
1109	PROTOTYPE:
1110	CODE:
1111	api_cede ();
1112
1113	# and these are hacks
1114	SV *	1224	SV *
1115	_aio_get_state ()	1225	_get_state ()
1116	CODE:	1226	CODE:
1117	{	1227	{
1118	struct {	1228	struct {
1119	int errorno;	1229	int errorno;
1120	int laststype;	1230	int laststype;
…		…
1131	}	1241	}
1132	OUTPUT:	1242	OUTPUT:
1133	RETVAL	1243	RETVAL
1134		1244
1135	void	1245	void
1136	_aio_set_state (char *data_)	1246	_set_state (char *data_)
1137	PROTOTYPE: $	1247	PROTOTYPE: $
1138	CODE:	1248	CODE:
1139	{	1249	{
1140	struct {	1250	struct {
1141	int errorno;	1251	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.80 by root, Thu Nov 2 20:00:00 2006 UTC vs. Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.80 by root, Thu Nov 2 20:00:00 2006 UTC vs.
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC