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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.100 by root, Mon Nov 27 00:07:49 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);
		178	#if PERL_VERSION_ATLEAST (5,9,0)
		179	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		180	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	181	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		182	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	183	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	184	--AvFILLp (padlist);
171		185
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	186	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
173	av_store (newpadlist, 1, (SV *)newpad);	187	av_store (newpadlist, 1, (SV *)newpad);
174		188
175	return newpadlist;	189	return newpadlist;
176	}	190	}
177		191
178	static void	192	static void
179	free_padlist (pTHX_ AV *padlist)	193	free_padlist (AV *padlist)
180	{	194	{
181	/* may be during global destruction */	195	/* may be during global destruction */
182	if (SvREFCNT (padlist))	196	if (SvREFCNT (padlist))
183	{	197	{
184	I32 i = AvFILLp (padlist);	198	I32 i = AvFILLp (padlist);
…		…
205	AV *padlist;	219	AV *padlist;
206	AV av = (AV )mg->mg_obj;	220	AV av = (AV )mg->mg_obj;
207		221
208	/* casting is fun. */	222	/* casting is fun. */
209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	223	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
210	free_padlist (aTHX_ padlist);	224	free_padlist (padlist);
211		225
212	SvREFCNT_dec (av);	226	SvREFCNT_dec (av);
213		227
214	return 0;	228	return 0;
215	}	229	}
…		…
218		232
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		234
221	/* the next two functions merely cache the padlists */	235	/* the next two functions merely cache the padlists */
222	static void	236	static void
223	get_padlist (pTHX_ CV *cv)	237	get_padlist (CV *cv)
224	{	238	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
226		240
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
229	else	243	else
230	{	244	{
231	#if 0	245	#if 0
232	/* this should work - but it doesn't :( */	246	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (aTHX_ cv);	247	CV *cp = Perl_cv_clone (cv);
234	CvPADLIST (cv) = CvPADLIST (cp);	248	CvPADLIST (cv) = CvPADLIST (cp);
235	CvPADLIST (cp) = 0;	249	CvPADLIST (cp) = 0;
236	SvREFCNT_dec (cp);	250	SvREFCNT_dec (cp);
237	#else	251	#else
238	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	252	CvPADLIST (cv) = coro_clone_padlist (cv);
239	#endif	253	#endif
240	}	254	}
241	}	255	}
242		256
243	static void	257	static void
244	put_padlist (pTHX_ CV *cv)	258	put_padlist (CV *cv)
245	{	259	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
247		261
248	if (!mg)	262	if (!mg)
249	{	263	{
…		…
257	}	271	}
258		272
259	#define SB do {	273	#define SB do {
260	#define SE } while (0)	274	#define SE } while (0)
261		275
262	#define LOAD(state) load_state(aTHX_ (state));	276	#define LOAD(state) load_state((state));
263	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	277	#define SAVE(state,flags) save_state((state),(flags));
264		278
265	#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
266		280
267	static void	281	static void
268	load_state(pTHX_ Coro__State c)	282	load_state(Coro__State c)
269	{	283	{
270	PL_dowarn = c->dowarn;	284	PL_dowarn = c->dowarn;
271	PL_in_eval = c->in_eval;	285	PL_in_eval = c->in_eval;
272		286
273	PL_curstackinfo = c->curstackinfo;	287	PL_curstackinfo = c->curstackinfo;
…		…
291	PL_scopestack_ix = c->scopestack_ix;	305	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;	306	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;	307	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;	308	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;	309	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9	310	#if !PERL_VERSION_ATLEAST (5,9,0)
297	PL_retstack = c->retstack;	311	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;	312	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;	313	PL_retstack_max = c->retstack_max;
300	#endif	314	#endif
301	PL_curpm = c->curpm;	315	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;	316	PL_curcop = c->curcop;
303	PL_top_env = c->top_env;
304		317
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
308		321
…		…
315	{	328	{
316	AV padlist = (AV )POPs;	329	AV padlist = (AV )POPs;
317		330
318	if (padlist)	331	if (padlist)
319	{	332	{
320	put_padlist (aTHX_ cv); /* mark this padlist as available */	333	put_padlist (cv); /* mark this padlist as available */
321	CvPADLIST(cv) = padlist;	334	CvPADLIST(cv) = padlist;
322	}	335	}
323		336
324	++CvDEPTH(cv);	337	++CvDEPTH(cv);
325	}	338	}
…		…
327	PUTBACK;	340	PUTBACK;
328	}	341	}
329	}	342	}
330		343
331	static void	344	static void
332	save_state(pTHX_ Coro__State c, int flags)	345	save_state(Coro__State c, int flags)
333	{	346	{
334	{	347	{
335	dSP;	348	dSP;
336	I32 cxix = cxstack_ix;	349	I32 cxix = cxstack_ix;
337	PERL_CONTEXT *ccstk = cxstack;	350	PERL_CONTEXT *ccstk = cxstack;
…		…
365	}	378	}
366		379
367	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST(cv));
368	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
369		382
370	get_padlist (aTHX_ cv);	383	get_padlist (cv);
371	}	384	}
372	}	385	}
373	#ifdef CXt_FORMAT	386	#ifdef CXt_FORMAT
374	else if (CxTYPE(cx) == CXt_FORMAT)	387	else if (CxTYPE(cx) == CXt_FORMAT)
375	{	388	{
…		…
419	c->scopestack_ix = PL_scopestack_ix;	432	c->scopestack_ix = PL_scopestack_ix;
420	c->scopestack_max = PL_scopestack_max;	433	c->scopestack_max = PL_scopestack_max;
421	c->savestack = PL_savestack;	434	c->savestack = PL_savestack;
422	c->savestack_ix = PL_savestack_ix;	435	c->savestack_ix = PL_savestack_ix;
423	c->savestack_max = PL_savestack_max;	436	c->savestack_max = PL_savestack_max;
424	#if PERL_VERSION < 9	437	#if !PERL_VERSION_ATLEAST (5,9,0)
425	c->retstack = PL_retstack;	438	c->retstack = PL_retstack;
426	c->retstack_ix = PL_retstack_ix;	439	c->retstack_ix = PL_retstack_ix;
427	c->retstack_max = PL_retstack_max;	440	c->retstack_max = PL_retstack_max;
428	#endif	441	#endif
429	c->curpm = PL_curpm;	442	c->curpm = PL_curpm;
430	c->curcop = PL_curcop;	443	c->curcop = PL_curcop;
431	c->top_env = PL_top_env;
432	}	444	}
433		445
434	/*	446	/*
435	* allocate various perl stacks. This is an exact copy	447	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	448	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	449	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	450	* not usually need a lot of stackspace.
439	*/	451	*/
440	static void	452	static void
441	coro_init_stacks (pTHX)	453	coro_init_stacks ()
442	{	454	{
443	LOCK;
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
446	PL_curstackinfo->si_type = PERLSI_MAIN;	456	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	457	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		459
…		…
470		480
471	New(54,PL_savestack,96,ANY);	481	New(54,PL_savestack,96,ANY);
472	PL_savestack_ix = 0;	482	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	483	PL_savestack_max = 96;
474		484
475	#if PERL_VERSION < 9	485	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	486	New(54,PL_retstack,8,OP*);
477	PL_retstack_ix = 0;	487	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	488	PL_retstack_max = 8;
479	#endif	489	#endif
480
481	UNLOCK;
482	}	490	}
483		491
484	/*	492	/*
485	* destroy the stacks, the callchain etc...	493	* destroy the stacks, the callchain etc...
486	*/	494	*/
487	static void	495	static void
488	destroy_stacks(pTHX)	496	destroy_stacks()
489	{	497	{
490	if (!IN_DESTRUCT)	498	if (!IN_DESTRUCT)
491	{	499	{
492	/* is this ugly, I ask? */	500	/* is this ugly, I ask? */
493	LEAVE_SCOPE (0);	501	LEAVE_SCOPE (0);
…		…
524		532
525	Safefree (PL_tmps_stack);	533	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	534	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	535	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	536	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	537	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	538	Safefree (PL_retstack);
531	#endif	539	#endif
532	}	540	}
533		541
534	static void	542	static void
535	allocate_stack (Coro__State ctx, int alloc)	543	setup_coro (struct coro *coro)
536	{
537	coro_stack *stack;
538
539	New (0, stack, 1, coro_stack);
540
541	stack->refcnt = 1;
542	stack->usecnt = 1;
543	stack->gencnt = ctx->gencnt = 0;
544
545	if (alloc)
546	{
547	#if HAVE_MMAP
548	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
549	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
550	if (stack->sptr != (void *)-1)
551	{
552	# if STACKGUARD
553	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
554	# endif
555	}
556	else
557	#endif
558	{
559	stack->ssize = - (STACKSIZE * (long)sizeof (long));
560	New (0, stack->sptr, STACKSIZE, long);
561	}
562	}
563	else
564	stack->sptr = 0;
565
566	ctx->stack = stack;
567	}
568
569	static void
570	deallocate_stack (Coro__State ctx)
571	{
572	coro_stack *stack = ctx->stack;
573
574	ctx->stack = 0;
575
576	if (stack)
577	{
578	if (!--stack->refcnt)
579	{
580	#ifdef HAVE_MMAP
581	if (stack->ssize > 0 && stack->sptr)
582	munmap (stack->sptr, stack->ssize);
583	else
584	#endif
585	Safefree (stack->sptr);
586
587	Safefree (stack);
588	}
589	else if (ctx->gencnt == stack->gencnt)
590	--stack->usecnt;
591	}
592	}
593
594	static void
595	setup_coro (void *arg)
596	{	544	{
597	/*	545	/*
598	* emulate part of the perl startup here.	546	* emulate part of the perl startup here.
599	*/	547	*/
600	dTHX;	548	dTHX;
601	dSP;	549	dSP;
602	Coro__State ctx = (Coro__State)arg;	550	UNOP myop;
603	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	551	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
604		552
605	coro_init_stacks (aTHX);	553	coro_init_stacks ();
606	/PL_curcop = 0;/	554	/PL_curcop = 0;/
607	/PL_in_eval = PL_in_eval;/ /* inherit */	555	/PL_in_eval = PL_in_eval;/ /* inherit */
608	SvREFCNT_dec (GvAV (PL_defgv));	556	SvREFCNT_dec (GvAV (PL_defgv));
609	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	557	GvAV (PL_defgv) = coro->args; coro->args = 0;
610		558
611	SPAGAIN;	559	SPAGAIN;
612		560
613	if (ctx->stack)
614	{
615	ctx->cursp = 0;
616
617	PUSHMARK(SP);
618	PUTBACK;
619	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
620
621	if (SvTRUE (ERRSV))
622	croak (NULL);
623	else
624	croak ("FATAL: CCTXT coroutine returned!");
625	}
626	else
627	{
628	UNOP myop;
629
630	PL_op = (OP *)&myop;
631
632	Zero(&myop, 1, UNOP);	561	Zero (&myop, 1, UNOP);
633	myop.op_next = Nullop;	562	myop.op_next = Nullop;
634	myop.op_flags = OPf_WANT_VOID;	563	myop.op_flags = OPf_WANT_VOID;
635		564
		565	PL_op = (OP *)&myop;
		566
636	PUSHMARK(SP);	567	PUSHMARK(SP);
637	XPUSHs (sub_init);	568	XPUSHs (sub_init);
638	/*
639	* the next line is slightly wrong, as PL_op->op_next
640	* is actually being executed so we skip the first op.
641	* that doesn't matter, though, since it is only
642	* pp_nextstate and we never return...
643	* ah yes, and I don't care anyways ;)
644	*/
645	PUTBACK;	569	PUTBACK;
646	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	570	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
647	SPAGAIN;	571	SPAGAIN;
648		572
649	ENTER; /* necessary e.g. for dounwind */	573	ENTER; /* necessary e.g. for dounwind */
650	}
651	}	574	}
652		575
653	static void	576	static void
654	continue_coro (void *arg)	577	free_coro_mortal ()
655	{	578	{
656	/*
657	* this is a _very_ stripped down perl interpreter ;)
658	*/
659	dTHX;
660	Coro__State ctx = (Coro__State)arg;
661
662	PL_top_env = &ctx->start_env;
663
664	ctx->cursp = 0;
665	PL_op = PL_op->op_next;
666	CALLRUNOPS(aTHX);
667
668	abort ();
669	}
670
671	static void
672	transfer (pTHX_ struct coro prev, struct coro next, int flags)
673	{
674	dSTACKLEVEL;
675
676	if (prev != next)
677	{
678	if (next->mainstack)
679	{
680	LOCK;
681	SAVE (prev, flags);
682	LOAD (next);
683	UNLOCK;
684
685	/* mark this state as in-use */
686	next->mainstack = 0;
687	next->tmps_ix = -2;
688
689	/* stacklevel changed? if yes, grab the stack for us! */
690	if (flags & TRANSFER_SAVE_CCTXT)
691	{
692	if (!prev->stack)
693	allocate_stack (prev, 0);
694	else if (prev->cursp != stacklevel
695	&& prev->stack->usecnt > 1)
696	{
697	prev->gencnt = ++prev->stack->gencnt;
698	prev->stack->usecnt = 1;
699	}
700
701	/* has our stack been invalidated? */
702	if (next->stack && next->stack->gencnt != next->gencnt)
703	{
704	deallocate_stack (next);
705	allocate_stack (next, 1);
706	coro_create (&(next->stack->cctx),
707	continue_coro, (void *)next,
708	next->stack->sptr, labs (next->stack->ssize));
709	}
710
711	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
712	prev->cursp = stacklevel;
713	/* don't add any code here */
714	}
715	else
716	next->cursp = stacklevel;
717	}
718	else if (next->tmps_ix == -2)
719	croak ("tried to transfer to running coroutine");
720	else
721	{
722	LOCK;
723	SAVE (prev, -1); /* first get rid of the old state */
724	UNLOCK;
725
726	if (flags & TRANSFER_SAVE_CCTXT)
727	{
728	if (!prev->stack)
729	allocate_stack (prev, 0);
730
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732	{
733	PL_top_env = &next->start_env;
734
735	setup_coro (next);
736	next->cursp = stacklevel;
737
738	prev->stack->refcnt++;
739	prev->stack->usecnt++;
740	next->stack = prev->stack;
741	next->gencnt = prev->gencnt;
742	}
743	else
744	{
745	assert (!next->stack);
746	allocate_stack (next, 1);
747	coro_create (&(next->stack->cctx),
748	setup_coro, (void *)next,
749	next->stack->sptr, labs (next->stack->ssize));
750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
751	prev->cursp = stacklevel;
752	/* don't add any code here */
753	}
754	}
755	else
756	{
757	setup_coro (next);
758	next->cursp = stacklevel;
759	}
760	}
761	}
762
763	LOCK;
764	if (coro_mortal)	579	if (coro_mortal)
765	{	580	{
766	SvREFCNT_dec (coro_mortal);	581	SvREFCNT_dec (coro_mortal);
767	coro_mortal = 0;	582	coro_mortal = 0;
768	}	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	*/
769	UNLOCK;	611	UNLOCK;
770	}
771		612
772	#define SV_CORO(sv,func) \	613	PL_top_env = &PL_start_env;
773	do { \	614	prepare_cctx ((coro_stack *)arg);
774	if (SvROK (sv)) \
775	sv = SvRV (sv); \
776	\
777	if (SvTYPE (sv) == SVt_PVHV) \
778	{ \
779	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
780	\
781	if (!he) \
782	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
783	\
784	(sv) = SvRV (HeVAL(he)); \
785	} \
786	\
787	/* must also be changed inside Coro::Cont::yield */ \
788	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
789	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
790	\
791	} while(0)
792		615
793	#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);
794		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
795	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
796	api_transfer(pTHX_ SV prev, SV next, int flags)	862	api_transfer (SV prev, SV next, int flags)
797	{	863	{
798	SV_CORO (prev, "Coro::transfer");	864	dTHX;
799	SV_CORO (next, "Coro::transfer");	865	struct transfer_args ta;
800		866
801	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	867	prepare_transfer (&ta, prev, next, flags);
		868	TRANSFER (ta);
802	}	869	}
803		870
804	/ Coro ******************************************************************/	871	/ Coro ******************************************************************/
805		872
806	#define PRIO_MAX 3	873	#define PRIO_MAX 3
…		…
810	#define PRIO_IDLE -3	877	#define PRIO_IDLE -3
811	#define PRIO_MIN -4	878	#define PRIO_MIN -4
812		879
813	/* for Coro.pm */	880	/* for Coro.pm */
814	static GV coro_current, coro_idle;	881	static GV coro_current, coro_idle;
815	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
816	static int coro_nready;	883	static int coro_nready;
817		884
818	static void	885	static void
819	coro_enq (pTHX_ SV *sv)	886	coro_enq (SV *sv)
820	{	887	{
821	SV **xprio;
822	int prio;	888	int prio;
823		889
824	if (SvTYPE (sv) != SVt_PVHV)	890	if (SvTYPE (sv) != SVt_PVHV)
825	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");
826		892
827	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	893	prio = SvSTATE (sv)->prio;
828	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
829
830	prio = prio > PRIO_MAX ? PRIO_MAX
831	: prio < PRIO_MIN ? PRIO_MIN
832	: prio;
833		894
834	av_push (coro_ready [prio - PRIO_MIN], sv);	895	av_push (coro_ready [prio - PRIO_MIN], sv);
835	coro_nready++;	896	coro_nready++;
836	}	897	}
837		898
838	static SV *	899	static SV *
839	coro_deq (pTHX_ int min_prio)	900	coro_deq (int min_prio)
840	{	901	{
841	int prio = PRIO_MAX - PRIO_MIN;	902	int prio = PRIO_MAX - PRIO_MIN;
842		903
843	min_prio -= PRIO_MIN;	904	min_prio -= PRIO_MIN;
844	if (min_prio < 0)	905	if (min_prio < 0)
845	min_prio = 0;	906	min_prio = 0;
846		907
847	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	908	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
848	if (av_len (coro_ready[prio]) >= 0)	909	if (AvFILLp (coro_ready [prio]) >= 0)
849	{	910	{
850	coro_nready--;	911	coro_nready--;
851	return av_shift (coro_ready[prio]);	912	return av_shift (coro_ready [prio]);
852	}	913	}
853		914
854	return 0;	915	return 0;
855	}	916	}
856		917
…		…
861		922
862	if (SvROK (coro))	923	if (SvROK (coro))
863	coro = SvRV (coro);	924	coro = SvRV (coro);
864		925
865	LOCK;	926	LOCK;
866	coro_enq (aTHX_ SvREFCNT_inc (coro));	927	coro_enq (SvREFCNT_inc (coro));
867	UNLOCK;	928	UNLOCK;
868	}	929	}
869		930
870	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
871	api_schedule (void)	987	api_schedule (void)
872	{	988	{
873	dTHX;	989	dTHX;
		990	struct transfer_args ta;
874		991
875	SV prev, next;	992	prepare_schedule (&ta);
876		993	TRANSFER (ta);
877	LOCK;
878
879	prev = SvRV (GvSV (coro_current));
880	next = coro_deq (aTHX_ PRIO_MIN);
881
882	if (!next)
883	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
884
885	/* free this only after the transfer */
886	coro_mortal = prev;
887	SV_CORO (prev, "Coro::schedule");
888
889	SvRV (GvSV (coro_current)) = next;
890
891	SV_CORO (next, "Coro::schedule");
892
893	UNLOCK;
894
895	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
896	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
897	}	994	}
898		995
899	static void	996	static void
900	api_cede (void)	997	api_cede (void)
901	{	998	{
902	dTHX;	999	dTHX;
		1000	struct transfer_args ta;
903		1001
904	LOCK;	1002	prepare_cede (&ta);
905	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1003	TRANSFER (ta);
906	UNLOCK;
907
908	api_schedule ();
909	}	1004	}
910		1005
911	MODULE = Coro::State PACKAGE = Coro::State	1006	MODULE = Coro::State PACKAGE = Coro::State
912		1007
913	PROTOTYPES: ENABLE	1008	PROTOTYPES: DISABLE
914		1009
915	BOOT:	1010	BOOT:
916	{ /* {} necessary for stoopid perl-5.6.x */	1011	{
917	#ifdef USE_ITHREADS	1012	#ifdef USE_ITHREADS
918	MUTEX_INIT (&coro_mutex);	1013	MUTEX_INIT (&coro_mutex);
919	#endif	1014	#endif
920	BOOT_PAGESIZE;	1015	BOOT_PAGESIZE;
921		1016
922	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
923	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
924	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1017	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
925		1018
926	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1019	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
927	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1020	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
928	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1021	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
929	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
930		1022
931	main_mainstack = PL_mainstack;	1023	main_mainstack = PL_mainstack;
932		1024
933	coroapi.ver = CORO_API_VERSION;	1025	coroapi.ver = CORO_API_VERSION;
934	coroapi.transfer = api_transfer;	1026	coroapi.transfer = api_transfer;
935	}
936		1027
937	Coro::State	1028	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
938	_newprocess(args)	1029	}
939	SV * args	1030
940	PROTOTYPE: $	1031	SV *
		1032	new (char *klass, ...)
941	CODE:	1033	CODE:
942	Coro__State coro;	1034	{
		1035	struct coro *coro;
		1036	HV *hv;
		1037	int i;
943		1038
944	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
945	croak ("Coro::State::_newprocess expects an arrayref");
946
947	Newz (0, coro, 1, struct coro);	1039	Newz (0, coro, 1, struct coro);
		1040	coro->args = newAV ();
948		1041
949	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
950	/coro->mainstack = 0; //actual work is done inside transfer /	1049	/coro->mainstack = 0; //actual work is done inside transfer /
951	/coro->stack = 0;/	1050	/coro->stack = 0;/
952		1051	}
953	/* same as JMPENV_BOOTSTRAP */
954	/* we might be able to recycle start_env, but safe is safe */
955	/Zero(&coro->start_env, 1, JMPENV);/
956	coro->start_env.je_ret = -1;
957	coro->start_env.je_mustcatch = TRUE;
958
959	RETVAL = coro;
960	OUTPUT:	1052	OUTPUT:
961	RETVAL	1053	RETVAL
962		1054
963	void	1055	void
964	transfer(prev, next, flags)	1056	_set_stacklevel (...)
965	SV *prev	1057	ALIAS:
966	SV *next	1058	Coro::State::transfer = 1
967	int flags	1059	Coro::schedule = 2
968	PROTOTYPE: @	1060	Coro::cede = 3
		1061	Coro::Cont::yield = 4
969	CODE:	1062	CODE:
970	PUTBACK;	1063	{
971	SV_CORO (next, "Coro::transfer");	1064	struct transfer_args ta;
972	SV_CORO (prev, "Coro::transfer");	1065
973	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1066	switch (ix)
974	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	}
975		1119
976	void	1120	void
977	DESTROY(coro)	1121	_clone_state_from (SV dst, SV src)
978	Coro::State coro	1122	CODE:
979	CODE:	1123	{
		1124	struct coro *coro_src = SvSTATE (src);
980		1125
981	if (coro->mainstack && coro->mainstack != main_mainstack)	1126	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
982	{
983	struct coro temp;
984		1127
985	PUTBACK;	1128	++coro_src->refcnt;
986	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;
987	LOAD (aTHX_ coro);	1130	}
988	SPAGAIN;
989
990	destroy_stacks (aTHX);
991
992	LOAD ((&temp)); /* this will get rid of defsv etc.. */
993	SPAGAIN;
994
995	coro->mainstack = 0;
996	}
997
998	deallocate_stack (coro);
999	SvREFCNT_dec (coro->args);
1000	Safefree (coro);
1001		1131
1002	void	1132	void
1003	_exit(code)	1133	_exit (code)
1004	int code	1134	int code
1005	PROTOTYPE: $	1135	PROTOTYPE: $
1006	CODE:	1136	CODE:
1007	_exit (code);	1137	_exit (code);
1008		1138
1009	MODULE = Coro::State PACKAGE = Coro::Cont
1010
1011	# this is slightly dirty (should expose a c-level api)
1012
1013	void
1014	yield(...)
1015	PROTOTYPE: @
1016	CODE:
1017	SV *yieldstack;
1018	SV *sv;
1019	AV *defav = GvAV (PL_defgv);
1020	struct coro prev, next;
1021
1022	yieldstack = *hv_fetch (
1023	(HV *)SvRV (GvSV (coro_current)),
1024	"yieldstack", sizeof ("yieldstack") - 1,
1025	0
1026	);
1027
1028	/* set up @_ -- ugly */
1029	av_clear (defav);
1030	av_fill (defav, items - 1);
1031	while (items--)
1032	av_store (defav, items, SvREFCNT_inc (ST(items)));
1033
1034	sv = av_pop ((AV *)SvRV (yieldstack));
1035	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1036	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1037	SvREFCNT_dec (sv);
1038
1039	transfer (aTHX_ prev, next, 0);
1040
1041	MODULE = Coro::State PACKAGE = Coro	1139	MODULE = Coro::State PACKAGE = Coro
1042		1140
1043	# this is slightly dirty (should expose a c-level api)
1044
1045	BOOT:	1141	BOOT:
1046	{	1142	{
1047	int i;	1143	int i;
		1144
1048	HV *stash = gv_stashpv ("Coro", TRUE);	1145	coro_stash = gv_stashpv ("Coro", TRUE);
1049		1146
1050	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1147	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1051	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1148	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1052	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1149	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1053	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1150	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1054	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1151	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1055	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1152	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1056		1153
1057	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1154	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1058	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1155	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1059		1156
1060	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1157	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1068	coroapi.ready = api_ready;	1165	coroapi.ready = api_ready;
1069	coroapi.nready = &coro_nready;	1166	coroapi.nready = &coro_nready;
1070	coroapi.current = coro_current;	1167	coroapi.current = coro_current;
1071		1168
1072	GCoroAPI = &coroapi;	1169	GCoroAPI = &coroapi;
1073	sv_setiv(sv, (IV)&coroapi);	1170	sv_setiv (sv, (IV)&coroapi);
1074	SvREADONLY_on(sv);	1171	SvREADONLY_on (sv);
1075	}	1172	}
1076	}	1173	}
1077		1174
1078	#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	}
1079		1194
1080	void	1195	void
1081	ready(self)	1196	ready (SV *self)
1082	SV * self
1083	PROTOTYPE: $	1197	PROTOTYPE: $
1084	CODE:	1198	CODE:
1085	api_ready (self);	1199	api_ready (self);
1086		1200
1087	#endif
1088
1089	int	1201	int
1090	nready(...)	1202	nready (...)
1091	PROTOTYPE:	1203	PROTOTYPE:
1092	CODE:	1204	CODE:
1093	RETVAL = coro_nready;	1205	RETVAL = coro_nready;
1094	OUTPUT:	1206	OUTPUT:
1095	RETVAL	1207	RETVAL
1096		1208
1097	void	1209	MODULE = Coro::State PACKAGE = Coro::AIO
1098	schedule(...)
1099	PROTOTYPE:
1100	CODE:
1101	api_schedule ();
1102		1210
1103	void
1104	cede(...)
1105	PROTOTYPE:
1106	CODE:
1107	api_cede ();
1108
1109	# and these are hacks
1110	SV *	1211	SV *
1111	_aio_get_state ()	1212	_get_state ()
1112	CODE:	1213	CODE:
1113	{	1214	{
1114	struct {	1215	struct {
1115	int errorno;	1216	int errorno;
1116	int laststype;	1217	int laststype;
…		…
1127	}	1228	}
1128	OUTPUT:	1229	OUTPUT:
1129	RETVAL	1230	RETVAL
1130		1231
1131	void	1232	void
1132	_aio_set_state (char *data_)	1233	_set_state (char *data_)
1133	PROTOTYPE: $	1234	PROTOTYPE: $
1134	CODE:	1235	CODE:
1135	{	1236	{
1136	struct {	1237	struct {
1137	int errorno;	1238	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs. Revision 1.100 by root, Mon Nov 27 00:07:49 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.100 by root, Mon Nov 27 00:07:49 2006 UTC