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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.84 by root, Fri Nov 24 00:31:21 2006 UTC vs.
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	#define PERL_VERSION_ATLEAST(a,b,c) \
		14	(PERL_REVISION > (a) \
		15	\|\| (PERL_REVISION == (a) \
		16	&& (PERL_VERSION > (b) \
		17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		18
		19	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	20	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	21	# define PL_ppaddr ppaddr
14	# endif	22	# endif
15	# ifndef call_sv	23	# ifndef call_sv
16	# define call_sv perl_call_sv	24	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	35	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	36	# define IS_PADCONST(v) 0
29	# endif	37	# endif
30	#endif	38	#endif
31		39
		40	#include <stdio.h>
32	#include <errno.h>	41	#include <errno.h>
33		42
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	44	# undef STACKGUARD
36	#endif	45	#endif
…		…
53	# ifndef PAGESIZE	62	# ifndef PAGESIZE
54	# define PAGESIZE pagesize	63	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)	64	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;	65	static long pagesize;
57	# else	66	# else
58	# define BOOT_PAGESIZE	67	# define BOOT_PAGESIZE (void)0
59	# endif	68	# endif
		69	#else
		70	# define PAGESIZE 0
		71	# define BOOT_PAGESIZE (void)0
60	#endif	72	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64		73
65	/* The next macro should declare a variable stacklevel that contains and approximation	74	/* The next macro should declare a variable stacklevel that contains and approximation
66	* to the current C stack pointer. Its property is that it changes with each call	75	* to the current C stack pointer. Its property is that it changes with each call
67	* and should be unique. */	76	* and should be unique. */
		77	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	78	#define STACKLEVEL ((void *)&stacklevel)
69		79
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	80	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		81
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	82	#if __GNUC__ >= 3
		83	# define attribute(x) __attribute__(x)
		84	#else
		85	# define attribute(x)
		86	#endif
		87
		88	#define NOINLINE attribute ((noinline))
73		89
74	#include "CoroAPI.h"	90	#include "CoroAPI.h"
		91
		92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
75		93
76	#ifdef USE_ITHREADS	94	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	95	static perl_mutex coro_mutex;
78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
82	# define UNLOCK (void)0	100	# define UNLOCK (void)0
83	#endif	101	#endif
84		102
85	static struct CoroAPI coroapi;	103	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	104	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	105	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 */	106	static SV coro_mortal; / will be freed after next transfer */
91		107
92	/* this is actually not only the c stack but also c registers etc... */	108	/* this is a structure representing a c-level coroutine */
93	typedef struct {	109	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	110	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		111
98	coro_context cctx;	112	/* the stack */
99
100	void *sptr;	113	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	114	long ssize; /* positive == mmap, otherwise malloc */
102	} coro_stack;
103		115
		116	/* cpu state */
		117	void idle_sp; / sp of top-level transfer/schedule/cede call */
		118	JMPENV *top_env;
		119	coro_context cctx;
		120
		121	#if USE_VALGRIND
		122	int valgrind_id;
		123	#endif
		124	} coro_cctx;
		125
		126	/* this is a structure representing a perl-level coroutine */
104	struct coro {	127	struct coro {
105	/* the optional C context */	128	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	129	coro_cctx *cctx;
107	void *cursp;	130
		131	/* data associated with this coroutine (initial args) */
		132	AV *args;
108	int gencnt;	133	int refcnt;
109		134
110	/* optionally saved, might be zero */	135	/* optionally saved, might be zero */
111	AV *defav;	136	AV *defav;
112	SV *defsv;	137	SV *defsv;
113	SV *errsv;	138	SV *errsv;
…		…
143	OP **retstack;	168	OP **retstack;
144	I32 retstack_ix;	169	I32 retstack_ix;
145	I32 retstack_max;	170	I32 retstack_max;
146	PMOP *curpm;	171	PMOP *curpm;
147	COP *curcop;	172	COP *curcop;
148	JMPENV *top_env;
149		173
150	/* data associated with this coroutine (initial args) */	174	/* coro process data */
151	AV *args;	175	int prio;
152	};	176	};
153		177
154	typedef struct coro *Coro__State;	178	typedef struct coro *Coro__State;
155	typedef struct coro *Coro__State_or_hashref;	179	typedef struct coro *Coro__State_or_hashref;
156		180
157	static AV *	181	static AV *
158	coro_clone_padlist (pTHX_ CV *cv)	182	coro_clone_padlist (CV *cv)
159	{	183	{
160	AV *padlist = CvPADLIST (cv);	184	AV *padlist = CvPADLIST (cv);
161	AV newpadlist, newpad;	185	AV newpadlist, newpad;
162		186
163	newpadlist = newAV ();	187	newpadlist = newAV ();
164	AvREAL_off (newpadlist);	188	AvREAL_off (newpadlist);
165	#if PERL_VERSION < 9	189	#if PERL_VERSION_ATLEAST (5,9,0)
		190	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		191	#else
166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	192	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
167	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
169	#endif	193	#endif
170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	194	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
171	--AvFILLp (padlist);	195	--AvFILLp (padlist);
172		196
173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	197	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
175		199
176	return newpadlist;	200	return newpadlist;
177	}	201	}
178		202
179	static void	203	static void
180	free_padlist (pTHX_ AV *padlist)	204	free_padlist (AV *padlist)
181	{	205	{
182	/* may be during global destruction */	206	/* may be during global destruction */
183	if (SvREFCNT (padlist))	207	if (SvREFCNT (padlist))
184	{	208	{
185	I32 i = AvFILLp (padlist);	209	I32 i = AvFILLp (padlist);
…		…
206	AV *padlist;	230	AV *padlist;
207	AV av = (AV )mg->mg_obj;	231	AV av = (AV )mg->mg_obj;
208		232
209	/* casting is fun. */	233	/* casting is fun. */
210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
211	free_padlist (aTHX_ padlist);	235	free_padlist (padlist);
212		236
213	SvREFCNT_dec (av);	237	SvREFCNT_dec (av);
214		238
215	return 0;	239	return 0;
216	}	240	}
…		…
219		243
220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
221		245
222	/* the next two functions merely cache the padlists */	246	/* the next two functions merely cache the padlists */
223	static void	247	static void
224	get_padlist (pTHX_ CV *cv)	248	get_padlist (CV *cv)
225	{	249	{
226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
227		251
228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
230	else	254	else
231	{	255	{
232	#if 0	256	#if 0
233	/* this should work - but it doesn't :( */	257	/* this is probably cleaner, but also slower? */
234	CV *cp = Perl_cv_clone (aTHX_ cv);	258	CV *cp = Perl_cv_clone (cv);
235	CvPADLIST (cv) = CvPADLIST (cp);	259	CvPADLIST (cv) = CvPADLIST (cp);
236	CvPADLIST (cp) = 0;	260	CvPADLIST (cp) = 0;
237	SvREFCNT_dec (cp);	261	SvREFCNT_dec (cp);
238	#else	262	#else
239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	263	CvPADLIST (cv) = coro_clone_padlist (cv);
240	#endif	264	#endif
241	}	265	}
242	}	266	}
243		267
244	static void	268	static void
245	put_padlist (pTHX_ CV *cv)	269	put_padlist (CV *cv)
246	{	270	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
248		272
249	if (!mg)	273	if (!mg)
250	{	274	{
…		…
258	}	282	}
259		283
260	#define SB do {	284	#define SB do {
261	#define SE } while (0)	285	#define SE } while (0)
262		286
263	#define LOAD(state) load_state(aTHX_ (state));	287	#define LOAD(state) load_state((state));
264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	288	#define SAVE(state,flags) save_state((state),(flags));
265		289
266	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	290	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
267		291
268	static void	292	static void
269	load_state(pTHX_ Coro__State c)	293	load_state(Coro__State c)
270	{	294	{
271	PL_dowarn = c->dowarn;	295	PL_dowarn = c->dowarn;
272	PL_in_eval = c->in_eval;	296	PL_in_eval = c->in_eval;
273		297
274	PL_curstackinfo = c->curstackinfo;	298	PL_curstackinfo = c->curstackinfo;
…		…
292	PL_scopestack_ix = c->scopestack_ix;	316	PL_scopestack_ix = c->scopestack_ix;
293	PL_scopestack_max = c->scopestack_max;	317	PL_scopestack_max = c->scopestack_max;
294	PL_savestack = c->savestack;	318	PL_savestack = c->savestack;
295	PL_savestack_ix = c->savestack_ix;	319	PL_savestack_ix = c->savestack_ix;
296	PL_savestack_max = c->savestack_max;	320	PL_savestack_max = c->savestack_max;
297	#if PERL_VERSION < 9	321	#if !PERL_VERSION_ATLEAST (5,9,0)
298	PL_retstack = c->retstack;	322	PL_retstack = c->retstack;
299	PL_retstack_ix = c->retstack_ix;	323	PL_retstack_ix = c->retstack_ix;
300	PL_retstack_max = c->retstack_max;	324	PL_retstack_max = c->retstack_max;
301	#endif	325	#endif
302	PL_curpm = c->curpm;	326	PL_curpm = c->curpm;
303	PL_curcop = c->curcop;	327	PL_curcop = c->curcop;
304	PL_top_env = c->top_env;
305		328
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
309		332
…		…
316	{	339	{
317	AV padlist = (AV )POPs;	340	AV padlist = (AV )POPs;
318		341
319	if (padlist)	342	if (padlist)
320	{	343	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	344	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	345	CvPADLIST(cv) = padlist;
323	}	346	}
324		347
325	++CvDEPTH(cv);	348	++CvDEPTH(cv);
326	}	349	}
…		…
328	PUTBACK;	351	PUTBACK;
329	}	352	}
330	}	353	}
331		354
332	static void	355	static void
333	save_state(pTHX_ Coro__State c, int flags)	356	save_state(Coro__State c, int flags)
334	{	357	{
335	{	358	{
336	dSP;	359	dSP;
337	I32 cxix = cxstack_ix;	360	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	361	PERL_CONTEXT *ccstk = cxstack;
…		…
366	}	389	}
367		390
368	PUSHs ((SV *)CvPADLIST(cv));	391	PUSHs ((SV *)CvPADLIST(cv));
369	PUSHs ((SV *)cv);	392	PUSHs ((SV *)cv);
370		393
371	get_padlist (aTHX_ cv);	394	get_padlist (cv);
372	}	395	}
373	}	396	}
374	#ifdef CXt_FORMAT	397	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)	398	else if (CxTYPE(cx) == CXt_FORMAT)
376	{	399	{
…		…
420	c->scopestack_ix = PL_scopestack_ix;	443	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;	444	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;	445	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;	446	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;	447	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9	448	#if !PERL_VERSION_ATLEAST (5,9,0)
426	c->retstack = PL_retstack;	449	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;	450	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;	451	c->retstack_max = PL_retstack_max;
429	#endif	452	#endif
430	c->curpm = PL_curpm;	453	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;	454	c->curcop = PL_curcop;
432	c->top_env = PL_top_env;
433	}	455	}
434		456
435	/*	457	/*
436	* allocate various perl stacks. This is an exact copy	458	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	459	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	460	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	461	* not usually need a lot of stackspace.
440	*/	462	*/
441	static void	463	static void
442	coro_init_stacks (pTHX)	464	coro_init_stacks ()
443	{	465	{
444	LOCK;
445
446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
447	PL_curstackinfo->si_type = PERLSI_MAIN;	467	PL_curstackinfo->si_type = PERLSI_MAIN;
448	PL_curstack = PL_curstackinfo->si_stack;	468	PL_curstack = PL_curstackinfo->si_stack;
449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
450		470
…		…
471		491
472	New(54,PL_savestack,96,ANY);	492	New(54,PL_savestack,96,ANY);
473	PL_savestack_ix = 0;	493	PL_savestack_ix = 0;
474	PL_savestack_max = 96;	494	PL_savestack_max = 96;
475		495
476	#if PERL_VERSION < 9	496	#if !PERL_VERSION_ATLEAST (5,9,0)
477	New(54,PL_retstack,8,OP*);	497	New(54,PL_retstack,8,OP*);
478	PL_retstack_ix = 0;	498	PL_retstack_ix = 0;
479	PL_retstack_max = 8;	499	PL_retstack_max = 8;
480	#endif	500	#endif
481
482	UNLOCK;
483	}	501	}
484		502
485	/*	503	/*
486	* destroy the stacks, the callchain etc...	504	* destroy the stacks, the callchain etc...
487	*/	505	*/
488	static void	506	static void
489	destroy_stacks(pTHX)	507	coro_destroy_stacks ()
490	{	508	{
491	if (!IN_DESTRUCT)	509	if (!IN_DESTRUCT)
492	{	510	{
493	/* is this ugly, I ask? */	511	/* is this ugly, I ask? */
494	LEAVE_SCOPE (0);	512	LEAVE_SCOPE (0);
…		…
525		543
526	Safefree (PL_tmps_stack);	544	Safefree (PL_tmps_stack);
527	Safefree (PL_markstack);	545	Safefree (PL_markstack);
528	Safefree (PL_scopestack);	546	Safefree (PL_scopestack);
529	Safefree (PL_savestack);	547	Safefree (PL_savestack);
530	#if PERL_VERSION < 9	548	#if !PERL_VERSION_ATLEAST (5,9,0)
531	Safefree (PL_retstack);	549	Safefree (PL_retstack);
532	#endif	550	#endif
533	}	551	}
534		552
535	static void	553	static void
536	allocate_stack (Coro__State ctx, int alloc)	554	setup_coro (struct coro *coro)
537	{
538	coro_stack *stack;
539
540	New (0, stack, 1, coro_stack);
541
542	stack->refcnt = 1;
543	stack->usecnt = 1;
544	stack->gencnt = ctx->gencnt = 0;
545
546	if (alloc)
547	{
548	#if HAVE_MMAP
549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
551	if (stack->sptr != (void *)-1)
552	{
553	# if STACKGUARD
554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
555	# endif
556	}
557	else
558	#endif
559	{
560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
561	New (0, stack->sptr, STACKSIZE, long);
562	}
563	}
564	else
565	stack->sptr = 0;
566
567	ctx->stack = stack;
568	}
569
570	static void
571	deallocate_stack (Coro__State ctx)
572	{
573	coro_stack *stack = ctx->stack;
574
575	ctx->stack = 0;
576
577	if (stack)
578	{
579	if (!--stack->refcnt)
580	{
581	#ifdef HAVE_MMAP
582	if (stack->ssize > 0 && stack->sptr)
583	munmap (stack->sptr, stack->ssize);
584	else
585	#endif
586	Safefree (stack->sptr);
587
588	Safefree (stack);
589	}
590	else if (ctx->gencnt == stack->gencnt)
591	--stack->usecnt;
592	}
593	}
594
595	static void
596	setup_coro (void *arg)
597	{	555	{
598	/*	556	/*
599	* emulate part of the perl startup here.	557	* emulate part of the perl startup here.
600	*/	558	*/
601	dTHX;
602	dSP;
603	Coro__State ctx = (Coro__State)arg;
604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
605		559
606	coro_init_stacks (aTHX);	560	coro_init_stacks ();
		561
607	/PL_curcop = 0;/	562	PL_curcop = 0;
608	/PL_in_eval = PL_in_eval;/ /* inherit */	563	PL_in_eval = 0;
		564	PL_curpm = 0;
		565
		566	{
		567	dSP;
		568	LOGOP myop;
		569
		570	/* I have no idea why this is needed, but it is */
		571	PUSHMARK (SP);
		572
609	SvREFCNT_dec (GvAV (PL_defgv));	573	SvREFCNT_dec (GvAV (PL_defgv));
610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	574	GvAV (PL_defgv) = coro->args; coro->args = 0;
611		575
612	SPAGAIN;
613
614	if (ctx->stack)
615	{
616	ctx->cursp = 0;
617
618	PUSHMARK(SP);
619	PUTBACK;
620	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
621
622	if (SvTRUE (ERRSV))
623	croak (NULL);
624	else
625	croak ("FATAL: CCTXT coroutine returned!");
626	}
627	else
628	{
629	UNOP myop;
630
631	Zero(&myop, 1, UNOP);	576	Zero (&myop, 1, LOGOP);
632	myop.op_next = Nullop;	577	myop.op_next = Nullop;
633	myop.op_flags = OPf_WANT_VOID;	578	myop.op_flags = OPf_WANT_VOID;
634		579
635	PL_op = (OP *)&myop;	580	PL_op = (OP *)&myop;
636		581
637	PUSHMARK(SP);	582	PUSHMARK (SP);
638	XPUSHs (sub_init);	583	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
639	/*
640	* the next line is slightly wrong, as PL_op->op_next
641	* is actually being executed so we skip the first op.
642	* that doesn't matter, though, since it is only
643	* pp_nextstate and we never return...
644	* ah yes, and I don't care anyways ;)
645	*/
646	PUTBACK;	584	PUTBACK;
647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	585	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
648	SPAGAIN;	586	SPAGAIN;
649		587
650	ENTER; /* necessary e.g. for dounwind */	588	ENTER; /* necessary e.g. for dounwind */
651	}	589	}
652	}	590	}
653		591
654	static void	592	static void
655	continue_coro (void *arg)	593	free_coro_mortal ()
656	{	594	{
657	/*
658	* this is a _very_ stripped down perl interpreter ;)
659	*/
660	dTHX;
661	Coro__State ctx = (Coro__State)arg;
662
663	PL_top_env = &PL_start_env;
664
665	ctx->cursp = 0;
666	PL_op = PL_op->op_next;
667	CALLRUNOPS(aTHX);
668
669	abort ();
670	}
671
672	/* never call directly, always through the coro_state_transfer global variable */
673	static void
674	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
675	{
676	dSTACKLEVEL;
677
678	if (prev != next)
679	{
680	/* has this coro been created yet? */
681	if (next->mainstack)
682	{
683	LOCK;
684	SAVE (prev, flags);
685	LOAD (next);
686	UNLOCK;
687
688	/* mark this state as in-use */
689	next->mainstack = 0;
690	next->tmps_ix = -2;
691
692	/* stacklevel changed? if yes, grab the stack for us! */
693	if (flags & TRANSFER_SAVE_CCTXT)
694	{
695	if (!prev->stack)
696	allocate_stack (prev, 0);
697	else if (prev->cursp != stacklevel
698	&& prev->stack->usecnt > 1)
699	{
700	prev->gencnt = ++prev->stack->gencnt;
701	prev->stack->usecnt = 1;
702	}
703
704	/* has our stack been invalidated? */
705	if (next->stack && next->stack->gencnt != next->gencnt)
706	{
707	deallocate_stack (next);
708	allocate_stack (next, 1);
709	coro_create (&(next->stack->cctx),
710	continue_coro, (void *)next,
711	next->stack->sptr, labs (next->stack->ssize));
712	}
713
714	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
715	prev->cursp = stacklevel;
716	/* don't add any code here */
717	}
718	else
719	next->cursp = stacklevel;
720	}
721	else if (next->tmps_ix == -2)
722	croak ("tried to transfer to running coroutine");
723	else
724	{
725	LOCK;
726	SAVE (prev, -1); /* first get rid of the old state */
727	UNLOCK;
728
729	/* create the coroutine for the first time */
730	if (flags & TRANSFER_SAVE_CCTXT)
731	{
732	if (!prev->stack)
733	allocate_stack (prev, 0);
734
735	/* the new coroutine starts with start_env again */
736	PL_top_env = &PL_start_env;
737
738	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
739	{
740	setup_coro (next);
741	next->cursp = stacklevel;
742
743	prev->stack->refcnt++;
744	prev->stack->usecnt++;
745	next->stack = prev->stack;
746	next->gencnt = prev->gencnt;
747	}
748	else
749	{
750	assert (!next->stack);
751	allocate_stack (next, 1);
752	coro_create (&(next->stack->cctx),
753	setup_coro, (void *)next,
754	next->stack->sptr, labs (next->stack->ssize));
755	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
756	prev->cursp = stacklevel;
757	/* don't add any code here */
758	}
759	}
760	else
761	{
762	setup_coro (next);
763	next->cursp = stacklevel;
764	}
765	}
766	}
767
768	LOCK;
769	if (coro_mortal)	595	if (coro_mortal)
770	{	596	{
771	SvREFCNT_dec (coro_mortal);	597	SvREFCNT_dec (coro_mortal);
772	coro_mortal = 0;	598	coro_mortal = 0;
773	}	599	}
		600	}
		601
		602	static void NOINLINE
		603	prepare_cctx (coro_cctx *cctx)
		604	{
		605	dSP;
		606	LOGOP myop;
		607
		608	Zero (&myop, 1, LOGOP);
		609	myop.op_next = PL_op;
		610	myop.op_flags = OPf_WANT_VOID;
		611
		612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
		613
		614	PUSHMARK (SP);
		615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
		616	PUTBACK;
		617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		618	SPAGAIN;
		619	}
		620
		621	static void
		622	coro_run (void *arg)
		623	{
		624	/* coro_run is the alternative epilogue of transfer() */
774	UNLOCK;	625	UNLOCK;
775	}
776		626
777	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	627	/*
		628	* this is a _very_ stripped down perl interpreter ;)
		629	*/
		630	PL_top_env = &PL_start_env;
		631	/* inject call to cctx_init */
		632	prepare_cctx ((coro_cctx *)arg);
778		633
779	#define SV_CORO(sv,func) \	634	/* somebody will hit me for both perl_run and PL_restartop */
780	do { \	635	perl_run (PL_curinterp);
781	if (SvROK (sv)) \
782	sv = SvRV (sv); \
783	\
784	if (SvTYPE (sv) == SVt_PVHV) \
785	{ \
786	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
787	\
788	if (!he) \
789	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
790	\
791	(sv) = SvRV (HeVAL(he)); \
792	} \
793	\
794	/* must also be changed inside Coro::Cont::yield */ \
795	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
796	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
797	\
798	} while(0)
799		636
800	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))	637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
		638	abort ();
		639	}
801		640
		641	static coro_cctx *
		642	cctx_new ()
		643	{
		644	coro_cctx *cctx;
		645
		646	New (0, cctx, 1, coro_cctx);
		647
		648	#if HAVE_MMAP
		649
		650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		651	/* mmap suppsedly does allocate-on-write for us */
		652	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		653
		654	if (cctx->sptr == (void *)-1)
		655	{
		656	perror ("FATAL: unable to mmap stack for coroutine");
		657	_exit (EXIT_FAILURE);
		658	}
		659
		660	# if STACKGUARD
		661	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		662	# endif
		663
		664	#else
		665
		666	cctx->ssize = STACKSIZE * (long)sizeof (long);
		667	New (0, cctx->sptr, STACKSIZE, long);
		668
		669	if (!cctx->sptr)
		670	{
		671	perror ("FATAL: unable to malloc stack for coroutine");
		672	_exit (EXIT_FAILURE);
		673	}
		674
		675	#endif
		676
		677	#if USE_VALGRIND
		678	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		679	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		680	cctx->ssize + (char *)cctx->sptr
		681	);
		682	#endif
		683
		684	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		685
		686	return cctx;
		687	}
		688
		689	static void
		690	cctx_free (coro_cctx *cctx)
		691	{
		692	if (!cctx)
		693	return;
		694
		695	#if USE_VALGRIND
		696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		697	#endif
		698
		699	#if HAVE_MMAP
		700	munmap (cctx->sptr, cctx->ssize);
		701	#else
		702	Safefree (cctx->sptr);
		703	#endif
		704
		705	Safefree (cctx);
		706	}
		707
		708	static coro_cctx *cctx_first;
		709	static int cctx_count, cctx_idle;
		710
		711	static coro_cctx *
		712	cctx_get ()
		713	{
		714	coro_cctx *cctx;
		715
		716	if (cctx_first)
		717	{
		718	--cctx_idle;
		719	cctx = cctx_first;
		720	cctx_first = cctx->next;
		721	}
		722	else
		723	{
		724	++cctx_count;
		725	cctx = cctx_new ();
		726	PL_op = PL_op->op_next;
		727	}
		728
		729	return cctx;
		730	}
		731
		732	static void
		733	cctx_put (coro_cctx *cctx)
		734	{
		735	++cctx_idle;
		736	cctx->next = cctx_first;
		737	cctx_first = cctx;
		738	}
		739
		740	/* never call directly, always through the coro_state_transfer global variable */
		741	static void NOINLINE
		742	transfer (struct coro prev, struct coro next, int flags)
		743	{
		744	dSTACKLEVEL;
		745
		746	/* sometimes transfer is only called to set idle_sp */
		747	if (flags == TRANSFER_SET_STACKLEVEL)
		748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		749	else if (prev != next)
		750	{
		751	coro_cctx *prev__cctx;
		752
		753	LOCK;
		754
		755	if (next->mainstack)
		756	{
		757	/* coroutine already started */
		758	SAVE (prev, flags);
		759	LOAD (next);
		760	}
		761	else
		762	{
		763	/* need to start coroutine */
		764	/* first get rid of the old state */
		765	SAVE (prev, -1);
		766	/* setup coroutine call */
		767	setup_coro (next);
		768	/* need a stack */
		769	next->cctx = 0;
		770	}
		771
		772	if (!prev->cctx)
		773	/* create a new empty context */
		774	Newz (0, prev->cctx, 1, coro_cctx);
		775
		776	prev__cctx = prev->cctx;
		777
		778	/* possibly "free" the cctx */
		779	if (prev__cctx->idle_sp == STACKLEVEL)
		780	{
		781	cctx_put (prev__cctx);
		782	prev->cctx = 0;
		783	}
		784
		785	if (!next->cctx)
		786	next->cctx = cctx_get ();
		787
		788	if (prev__cctx != next->cctx)
		789	{
		790	prev__cctx->top_env = PL_top_env;
		791	PL_top_env = next->cctx->top_env;
		792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		793	}
		794
		795	free_coro_mortal ();
		796
		797	UNLOCK;
		798	}
		799	}
		800
		801	struct transfer_args
		802	{
		803	struct coro prev, next;
		804	int flags;
		805	};
		806
		807	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
		808
		809	static void
		810	coro_state_destroy (struct coro *coro)
		811	{
		812	if (coro->refcnt--)
		813	return;
		814
		815	if (coro->mainstack && coro->mainstack != main_mainstack)
		816	{
		817	struct coro temp;
		818
		819	SAVE ((&temp), TRANSFER_SAVE_ALL);
		820	LOAD (coro);
		821
		822	coro_destroy_stacks ();
		823
		824	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		825
		826	coro->mainstack = 0;
		827	}
		828
		829	cctx_free (coro->cctx);
		830	SvREFCNT_dec (coro->args);
		831	Safefree (coro);
		832	}
		833
802	static void	834	static int
		835	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		836	{
		837	struct coro coro = (struct coro )mg->mg_ptr;
		838	mg->mg_ptr = 0;
		839
		840	coro_state_destroy (coro);
		841
		842	return 0;
		843	}
		844
		845	static int
		846	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		847	{
		848	struct coro coro = (struct coro )mg->mg_ptr;
		849
		850	++coro->refcnt;
		851
		852	return 0;
		853	}
		854
		855	static MGVTBL coro_state_vtbl = {
		856	0, 0, 0, 0,
		857	coro_state_clear,
		858	0,
		859	#ifdef MGf_DUP
		860	coro_state_dup,
		861	#else
		862	# define MGf_DUP 0
		863	#endif
		864	};
		865
		866	static struct coro *
		867	SvSTATE (SV *coro)
		868	{
		869	HV *stash;
		870	MAGIC *mg;
		871
		872	if (SvROK (coro))
		873	coro = SvRV (coro);
		874
		875	stash = SvSTASH (coro);
		876	if (stash != coro_stash && stash != coro_state_stash)
		877	{
		878	/* very slow, but rare, check */
		879	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		880	croak ("Coro::State object required");
		881	}
		882
		883	mg = SvMAGIC (coro);
		884	assert (mg->mg_type == PERL_MAGIC_ext);
		885	return (struct coro *)mg->mg_ptr;
		886	}
		887
		888	static void
		889	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		890	{
		891	ta->prev = SvSTATE (prev);
		892	ta->next = SvSTATE (next);
		893	ta->flags = flags;
		894	}
		895
		896	static void
803	api_transfer (pTHX_ SV prev, SV next, int flags)	897	api_transfer (SV prev, SV next, int flags)
804	{	898	{
805	SV_CORO (prev, "Coro::transfer");	899	dTHX;
806	SV_CORO (next, "Coro::transfer");	900	struct transfer_args ta;
807		901
808	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	902	prepare_transfer (&ta, prev, next, flags);
		903	TRANSFER (ta);
809	}	904	}
810		905
811	/ Coro ******************************************************************/	906	/ Coro ******************************************************************/
812		907
813	#define PRIO_MAX 3	908	#define PRIO_MAX 3
…		…
821	static GV coro_current, coro_idle;	916	static GV coro_current, coro_idle;
822	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
823	static int coro_nready;	918	static int coro_nready;
824		919
825	static void	920	static void
826	coro_enq (pTHX_ SV *sv)	921	coro_enq (SV *sv)
827	{	922	{
828	SV **xprio;
829	int prio;	923	int prio;
830		924
831	if (SvTYPE (sv) != SVt_PVHV)	925	if (SvTYPE (sv) != SVt_PVHV)
832	croak ("Coro::ready tried to enqueue something that is not a coroutine");	926	croak ("Coro::ready tried to enqueue something that is not a coroutine");
833		927
834	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	928	prio = SvSTATE (sv)->prio;
835	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
836
837	prio = prio > PRIO_MAX ? PRIO_MAX
838	: prio < PRIO_MIN ? PRIO_MIN
839	: prio;
840		929
841	av_push (coro_ready [prio - PRIO_MIN], sv);	930	av_push (coro_ready [prio - PRIO_MIN], sv);
842	coro_nready++;	931	coro_nready++;
843	}	932	}
844		933
845	static SV *	934	static SV *
846	coro_deq (pTHX_ int min_prio)	935	coro_deq (int min_prio)
847	{	936	{
848	int prio = PRIO_MAX - PRIO_MIN;	937	int prio = PRIO_MAX - PRIO_MIN;
849		938
850	min_prio -= PRIO_MIN;	939	min_prio -= PRIO_MIN;
851	if (min_prio < 0)	940	if (min_prio < 0)
…		…
868		957
869	if (SvROK (coro))	958	if (SvROK (coro))
870	coro = SvRV (coro);	959	coro = SvRV (coro);
871		960
872	LOCK;	961	LOCK;
873	coro_enq (aTHX_ SvREFCNT_inc (coro));	962	coro_enq (SvREFCNT_inc (coro));
874	UNLOCK;	963	UNLOCK;
875	}	964	}
876		965
877	static void	966	static void
		967	prepare_schedule (struct transfer_args *ta)
		968	{
		969	SV current, prev, *next;
		970
		971	current = GvSV (coro_current);
		972
		973	for (;;)
		974	{
		975	LOCK;
		976	next = coro_deq (PRIO_MIN);
		977	UNLOCK;
		978
		979	if (next)
		980	break;
		981
		982	{
		983	dSP;
		984
		985	ENTER;
		986	SAVETMPS;
		987
		988	PUSHMARK (SP);
		989	PUTBACK;
		990	call_sv (GvSV (coro_idle), G_DISCARD);
		991
		992	FREETMPS;
		993	LEAVE;
		994	}
		995	}
		996
		997	prev = SvRV (current);
		998	SvRV (current) = next;
		999
		1000	/* free this only after the transfer */
		1001	LOCK;
		1002	free_coro_mortal ();
		1003	UNLOCK;
		1004	coro_mortal = prev;
		1005
		1006	ta->prev = SvSTATE (prev);
		1007	ta->next = SvSTATE (next);
		1008	ta->flags = TRANSFER_SAVE_ALL;
		1009	}
		1010
		1011	static void
		1012	prepare_cede (struct transfer_args *ta)
		1013	{
		1014	LOCK;
		1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		1016	UNLOCK;
		1017
		1018	prepare_schedule (ta);
		1019	}
		1020
		1021	static void
878	api_schedule (void)	1022	api_schedule (void)
879	{	1023	{
880	dTHX;	1024	dTHX;
		1025	struct transfer_args ta;
881		1026
882	SV prev, next;	1027	prepare_schedule (&ta);
883		1028	TRANSFER (ta);
884	LOCK;
885
886	prev = SvRV (GvSV (coro_current));
887	next = coro_deq (aTHX_ PRIO_MIN);
888
889	if (!next)
890	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
891
892	/* free this only after the transfer */
893	coro_mortal = prev;
894	SV_CORO (prev, "Coro::schedule");
895
896	SvRV (GvSV (coro_current)) = next;
897
898	SV_CORO (next, "Coro::schedule");
899
900	UNLOCK;
901
902	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
903	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
904	}	1029	}
905		1030
906	static void	1031	static void
907	api_cede (void)	1032	api_cede (void)
908	{	1033	{
909	dTHX;	1034	dTHX;
		1035	struct transfer_args ta;
910		1036
911	LOCK;	1037	prepare_cede (&ta);
912	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1038	TRANSFER (ta);
913	UNLOCK;
914
915	api_schedule ();
916	}	1039	}
917		1040
918	MODULE = Coro::State PACKAGE = Coro::State	1041	MODULE = Coro::State PACKAGE = Coro::State
919		1042
920	PROTOTYPES: ENABLE	1043	PROTOTYPES: DISABLE
921		1044
922	BOOT:	1045	BOOT:
923	{ /* {} necessary for stoopid perl-5.6.x */	1046	{
924	#ifdef USE_ITHREADS	1047	#ifdef USE_ITHREADS
925	MUTEX_INIT (&coro_mutex);	1048	MUTEX_INIT (&coro_mutex);
926	#endif	1049	#endif
927	BOOT_PAGESIZE;	1050	BOOT_PAGESIZE;
928		1051
929	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
930	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
931	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1052	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
932		1053
933	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1054	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
934	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1055	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
935	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1056	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
936	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
937		1057
938	main_mainstack = PL_mainstack;	1058	main_mainstack = PL_mainstack;
939		1059
940	coroapi.ver = CORO_API_VERSION;	1060	coroapi.ver = CORO_API_VERSION;
941	coroapi.transfer = api_transfer;	1061	coroapi.transfer = api_transfer;
942	}
943		1062
944	Coro::State	1063	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
945	_newprocess(args)	1064	}
946	SV * args	1065
947	PROTOTYPE: $	1066	SV *
		1067	new (char *klass, ...)
948	CODE:	1068	CODE:
949	Coro__State coro;	1069	{
		1070	struct coro *coro;
		1071	HV *hv;
		1072	int i;
950		1073
951	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
952	croak ("Coro::State::_newprocess expects an arrayref");
953
954	Newz (0, coro, 1, struct coro);	1074	Newz (0, coro, 1, struct coro);
		1075	coro->args = newAV ();
955		1076
956	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1077	hv = newHV ();
957	/coro->mainstack = 0; //actual work is done inside transfer /	1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
958	/coro->stack = 0;/	1079	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
959		1080
960	RETVAL = coro;	1081	for (i = 1; i < items; i++)
		1082	av_push (coro->args, newSVsv (ST (i)));
		1083	}
961	OUTPUT:	1084	OUTPUT:
962	RETVAL	1085	RETVAL
963		1086
964	void	1087	void
965	transfer(prev, next, flags)	1088	_set_stacklevel (...)
966	SV *prev	1089	ALIAS:
967	SV *next	1090	Coro::State::transfer = 1
968	int flags	1091	Coro::schedule = 2
969	PROTOTYPE: @	1092	Coro::cede = 3
		1093	Coro::Cont::yield = 4
970	CODE:	1094	CODE:
971	PUTBACK;	1095	{
972	SV_CORO (next, "Coro::transfer");	1096	struct transfer_args ta;
973	SV_CORO (prev, "Coro::transfer");	1097
974	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1098	switch (ix)
975	SPAGAIN;	1099	{
		1100	case 0:
		1101	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1102	ta.next = 0;
		1103	ta.flags = TRANSFER_SET_STACKLEVEL;
		1104	break;
		1105
		1106	case 1:
		1107	if (items != 3)
		1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1109
		1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1111	break;
		1112
		1113	case 2:
		1114	prepare_schedule (&ta);
		1115	break;
		1116
		1117	case 3:
		1118	prepare_cede (&ta);
		1119	break;
		1120
		1121	case 4:
		1122	{
		1123	SV *yieldstack;
		1124	SV *sv;
		1125	AV *defav = GvAV (PL_defgv);
		1126
		1127	yieldstack = *hv_fetch (
		1128	(HV *)SvRV (GvSV (coro_current)),
		1129	"yieldstack", sizeof ("yieldstack") - 1,
		1130	0
		1131	);
		1132
		1133	/* set up @_ -- ugly */
		1134	av_clear (defav);
		1135	av_fill (defav, items - 1);
		1136	while (items--)
		1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1138
		1139	sv = av_pop ((AV *)SvRV (yieldstack));
		1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1142	ta.flags = 0;
		1143	SvREFCNT_dec (sv);
		1144	}
		1145	break;
		1146
		1147	}
		1148
		1149	TRANSFER (ta);
		1150	}
976		1151
977	void	1152	void
978	DESTROY(coro)	1153	_clone_state_from (SV dst, SV src)
979	Coro::State coro	1154	CODE:
980	CODE:	1155	{
		1156	struct coro *coro_src = SvSTATE (src);
981		1157
982	if (coro->mainstack && coro->mainstack != main_mainstack)	1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
983	{
984	struct coro temp;
985		1159
986	PUTBACK;	1160	++coro_src->refcnt;
987	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1161	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
988	LOAD (aTHX_ coro);	1162	}
989	SPAGAIN;
990
991	destroy_stacks (aTHX);
992
993	LOAD ((&temp)); /* this will get rid of defsv etc.. */
994	SPAGAIN;
995
996	coro->mainstack = 0;
997	}
998
999	deallocate_stack (coro);
1000	SvREFCNT_dec (coro->args);
1001	Safefree (coro);
1002		1163
1003	void	1164	void
1004	_exit(code)	1165	_exit (code)
1005	int code	1166	int code
1006	PROTOTYPE: $	1167	PROTOTYPE: $
1007	CODE:	1168	CODE:
1008	_exit (code);	1169	_exit (code);
1009		1170
1010	MODULE = Coro::State PACKAGE = Coro::Cont	1171	int
		1172	cctx_count ()
		1173	CODE:
		1174	RETVAL = cctx_count;
		1175	OUTPUT:
		1176	RETVAL
1011		1177
1012	void	1178	int
1013	yield(...)	1179	cctx_idle ()
1014	PROTOTYPE: @	1180	CODE:
1015	CODE:	1181	RETVAL = cctx_idle;
1016	SV *yieldstack;	1182	OUTPUT:
1017	SV *sv;	1183	RETVAL
1018	AV *defav = GvAV (PL_defgv);
1019	struct coro prev, next;
1020
1021	yieldstack = *hv_fetch (
1022	(HV *)SvRV (GvSV (coro_current)),
1023	"yieldstack", sizeof ("yieldstack") - 1,
1024	0
1025	);
1026
1027	/* set up @_ -- ugly */
1028	av_clear (defav);
1029	av_fill (defav, items - 1);
1030	while (items--)
1031	av_store (defav, items, SvREFCNT_inc (ST(items)));
1032
1033	sv = av_pop ((AV *)SvRV (yieldstack));
1034	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1035	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1036	SvREFCNT_dec (sv);
1037
1038	coro_state_transfer (aTHX_ prev, next, 0);
1039		1184
1040	MODULE = Coro::State PACKAGE = Coro	1185	MODULE = Coro::State PACKAGE = Coro
1041		1186
1042	BOOT:	1187	BOOT:
1043	{	1188	{
1044	int i;	1189	int i;
		1190
1045	HV *stash = gv_stashpv ("Coro", TRUE);	1191	coro_stash = gv_stashpv ("Coro", TRUE);
1046		1192
1047	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1193	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1048	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1194	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1049	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1050	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1051	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1052	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1053		1199
1054	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1055	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1056		1202
1057	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1070	sv_setiv (sv, (IV)&coroapi);	1216	sv_setiv (sv, (IV)&coroapi);
1071	SvREADONLY_on (sv);	1217	SvREADONLY_on (sv);
1072	}	1218	}
1073	}	1219	}
1074		1220
1075	#if !PERL_MICRO	1221	int
		1222	prio (Coro::State coro, int newprio = 0)
		1223	ALIAS:
		1224	nice = 1
		1225	CODE:
		1226	{
		1227	RETVAL = coro->prio;
		1228
		1229	if (items > 1)
		1230	{
		1231	if (ix)
		1232	newprio += coro->prio;
		1233
		1234	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1235	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1236
		1237	coro->prio = newprio;
		1238	}
		1239	}
1076		1240
1077	void	1241	void
1078	ready(self)	1242	ready (SV *self)
1079	SV * self
1080	PROTOTYPE: $	1243	PROTOTYPE: $
1081	CODE:	1244	CODE:
1082	api_ready (self);	1245	api_ready (self);
1083		1246
1084	#endif
1085
1086	int	1247	int
1087	nready(...)	1248	nready (...)
1088	PROTOTYPE:	1249	PROTOTYPE:
1089	CODE:	1250	CODE:
1090	RETVAL = coro_nready;	1251	RETVAL = coro_nready;
1091	OUTPUT:	1252	OUTPUT:
1092	RETVAL	1253	RETVAL
1093		1254
1094	void	1255	MODULE = Coro::State PACKAGE = Coro::AIO
1095	schedule(...)
1096	PROTOTYPE:
1097	CODE:
1098	api_schedule ();
1099		1256
1100	void
1101	cede(...)
1102	PROTOTYPE:
1103	CODE:
1104	api_cede ();
1105
1106	# and these are hacks
1107	SV *	1257	SV *
1108	_aio_get_state ()	1258	_get_state ()
1109	CODE:	1259	CODE:
1110	{	1260	{
1111	struct {	1261	struct {
1112	int errorno;	1262	int errorno;
1113	int laststype;	1263	int laststype;
…		…
1124	}	1274	}
1125	OUTPUT:	1275	OUTPUT:
1126	RETVAL	1276	RETVAL
1127		1277
1128	void	1278	void
1129	_aio_set_state (char *data_)	1279	_set_state (char *data_)
1130	PROTOTYPE: $	1280	PROTOTYPE: $
1131	CODE:	1281	CODE:
1132	{	1282	{
1133	struct {	1283	struct {
1134	int errorno;	1284	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.84 by root, Fri Nov 24 00:31:21 2006 UTC vs. Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.84 by root, Fri Nov 24 00:31:21 2006 UTC vs.
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC