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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs.
Revision 1.107 by root, Mon Nov 27 02:15:51 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		73
64	/* 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
65	* 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
66	* and should be unique. */	76	* and should be unique. */
		77	#define dSTACKLEVEL int stacklevel
67	#define dSTACKLEVEL void *stacklevel = &stacklevel	78	#define STACKLEVEL ((void *)&stacklevel)
68		79
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	80	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		81
71	#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))
72		89
73	#include "CoroAPI.h"	90	#include "CoroAPI.h"
		91
		92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		93
75	#ifdef USE_ITHREADS	94	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	95	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
84	static struct CoroAPI coroapi;	103	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	104	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	105	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	106	static SV coro_mortal; / will be freed after next transfer */
88		107
89	/* this is actually not only the c stack but also c registers etc... */	108	static struct coro_cctx *cctx_first;
		109	static int cctx_count, cctx_idle;
		110
		111	/* this is a structure representing a c-level coroutine */
90	typedef struct {	112	typedef struct coro_cctx {
91	int refcnt; /* pointer reference counter */	113	struct coro_cctx *next;
92	int usecnt; /* shared by how many coroutines */
93	int gencnt; /* generation counter */
94		114
95	coro_context cctx;	115	/* the stack */
96
97	void *sptr;	116	void *sptr;
98	long ssize; /* positive == mmap, otherwise malloc */	117	long ssize; /* positive == mmap, otherwise malloc */
99	} coro_stack;
100		118
		119	/* cpu state */
		120	void idle_sp; / sp of top-level transfer/schedule/cede call */
		121	JMPENV *top_env;
		122	coro_context cctx;
		123
		124	#if USE_VALGRIND
		125	int valgrind_id;
		126	#endif
		127	} coro_cctx;
		128
		129	/* this is a structure representing a perl-level coroutine */
101	struct coro {	130	struct coro {
102	/* the optional C context */	131	/* the c coroutine allocated to this perl coroutine, if any */
103	coro_stack *stack;	132	coro_cctx *cctx;
104	void *cursp;	133
		134	/* data associated with this coroutine (initial args) */
		135	AV *args;
105	int gencnt;	136	int refcnt;
106		137
107	/* optionally saved, might be zero */	138	/* optionally saved, might be zero */
108	AV *defav;	139	AV *defav;
109	SV *defsv;	140	SV *defsv;
110	SV *errsv;	141	SV *errsv;
…		…
140	OP **retstack;	171	OP **retstack;
141	I32 retstack_ix;	172	I32 retstack_ix;
142	I32 retstack_max;	173	I32 retstack_max;
143	PMOP *curpm;	174	PMOP *curpm;
144	COP *curcop;	175	COP *curcop;
145	JMPENV *top_env;
146		176
147	/* coro process data */	177	/* coro process data */
148	int prio;	178	int prio;
149
150	/* data associated with this coroutine (initial args) */
151	AV *args;
152	int refcnt;
153	};	179	};
154		180
155	typedef struct coro *Coro__State;	181	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	182	typedef struct coro *Coro__State_or_hashref;
157		183
158	static AV *	184	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	185	coro_clone_padlist (CV *cv)
160	{	186	{
161	AV *padlist = CvPADLIST (cv);	187	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	188	AV newpadlist, newpad;
163		189
164	newpadlist = newAV ();	190	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	191	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	192	#if PERL_VERSION_ATLEAST (5,9,0)
		193	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		194	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	195	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	196	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	197	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	198	--AvFILLp (padlist);
173		199
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	200	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		202
177	return newpadlist;	203	return newpadlist;
178	}	204	}
179		205
180	static void	206	static void
181	free_padlist (pTHX_ AV *padlist)	207	free_padlist (AV *padlist)
182	{	208	{
183	/* may be during global destruction */	209	/* may be during global destruction */
184	if (SvREFCNT (padlist))	210	if (SvREFCNT (padlist))
185	{	211	{
186	I32 i = AvFILLp (padlist);	212	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	233	AV *padlist;
208	AV av = (AV )mg->mg_obj;	234	AV av = (AV )mg->mg_obj;
209		235
210	/* casting is fun. */	236	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	237	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	238	free_padlist (padlist);
213		239
214	SvREFCNT_dec (av);	240	SvREFCNT_dec (av);
215		241
216	return 0;	242	return 0;
217	}	243	}
…		…
220		246
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	247	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		248
223	/* the next two functions merely cache the padlists */	249	/* the next two functions merely cache the padlists */
224	static void	250	static void
225	get_padlist (pTHX_ CV *cv)	251	get_padlist (CV *cv)
226	{	252	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
228		254
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
231	else	257	else
232	{	258	{
233	#if 0	259	#if 0
234	/* this should work - but it doesn't :( */	260	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	261	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	262	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	263	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	264	SvREFCNT_dec (cp);
239	#else	265	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	266	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	267	#endif
242	}	268	}
243	}	269	}
244		270
245	static void	271	static void
246	put_padlist (pTHX_ CV *cv)	272	put_padlist (CV *cv)
247	{	273	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
249		275
250	if (!mg)	276	if (!mg)
251	{	277	{
…		…
259	}	285	}
260		286
261	#define SB do {	287	#define SB do {
262	#define SE } while (0)	288	#define SE } while (0)
263		289
264	#define LOAD(state) load_state(aTHX_ (state));	290	#define LOAD(state) load_state((state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	291	#define SAVE(state,flags) save_state((state),(flags));
266		292
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	293	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
268		294
269	static void	295	static void
270	load_state(pTHX_ Coro__State c)	296	load_state(Coro__State c)
271	{	297	{
272	PL_dowarn = c->dowarn;	298	PL_dowarn = c->dowarn;
273	PL_in_eval = c->in_eval;	299	PL_in_eval = c->in_eval;
274		300
275	PL_curstackinfo = c->curstackinfo;	301	PL_curstackinfo = c->curstackinfo;
…		…
293	PL_scopestack_ix = c->scopestack_ix;	319	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;	320	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;	321	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;	322	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;	323	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9	324	#if !PERL_VERSION_ATLEAST (5,9,0)
299	PL_retstack = c->retstack;	325	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;	326	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;	327	PL_retstack_max = c->retstack_max;
302	#endif	328	#endif
303	PL_curpm = c->curpm;	329	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;	330	PL_curcop = c->curcop;
305	PL_top_env = c->top_env;
306		331
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	334	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
310		335
…		…
317	{	342	{
318	AV padlist = (AV )POPs;	343	AV padlist = (AV )POPs;
319		344
320	if (padlist)	345	if (padlist)
321	{	346	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	347	put_padlist (cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	348	CvPADLIST(cv) = padlist;
324	}	349	}
325		350
326	++CvDEPTH(cv);	351	++CvDEPTH(cv);
327	}	352	}
…		…
329	PUTBACK;	354	PUTBACK;
330	}	355	}
331	}	356	}
332		357
333	static void	358	static void
334	save_state(pTHX_ Coro__State c, int flags)	359	save_state(Coro__State c, int flags)
335	{	360	{
336	{	361	{
337	dSP;	362	dSP;
338	I32 cxix = cxstack_ix;	363	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	364	PERL_CONTEXT *ccstk = cxstack;
…		…
367	}	392	}
368		393
369	PUSHs ((SV *)CvPADLIST(cv));	394	PUSHs ((SV *)CvPADLIST(cv));
370	PUSHs ((SV *)cv);	395	PUSHs ((SV *)cv);
371		396
372	get_padlist (aTHX_ cv);	397	get_padlist (cv);
373	}	398	}
374	}	399	}
375	#ifdef CXt_FORMAT	400	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)	401	else if (CxTYPE(cx) == CXt_FORMAT)
377	{	402	{
…		…
421	c->scopestack_ix = PL_scopestack_ix;	446	c->scopestack_ix = PL_scopestack_ix;
422	c->scopestack_max = PL_scopestack_max;	447	c->scopestack_max = PL_scopestack_max;
423	c->savestack = PL_savestack;	448	c->savestack = PL_savestack;
424	c->savestack_ix = PL_savestack_ix;	449	c->savestack_ix = PL_savestack_ix;
425	c->savestack_max = PL_savestack_max;	450	c->savestack_max = PL_savestack_max;
426	#if PERL_VERSION < 9	451	#if !PERL_VERSION_ATLEAST (5,9,0)
427	c->retstack = PL_retstack;	452	c->retstack = PL_retstack;
428	c->retstack_ix = PL_retstack_ix;	453	c->retstack_ix = PL_retstack_ix;
429	c->retstack_max = PL_retstack_max;	454	c->retstack_max = PL_retstack_max;
430	#endif	455	#endif
431	c->curpm = PL_curpm;	456	c->curpm = PL_curpm;
432	c->curcop = PL_curcop;	457	c->curcop = PL_curcop;
433	c->top_env = PL_top_env;
434	}	458	}
435		459
436	/*	460	/*
437	* allocate various perl stacks. This is an exact copy	461	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	462	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	463	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	464	* not usually need a lot of stackspace.
441	*/	465	*/
442	static void	466	static void
443	coro_init_stacks (pTHX)	467	coro_init_stacks ()
444	{	468	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	470	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	471	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		473
…		…
472		494
473	New(54,PL_savestack,96,ANY);	495	New(54,PL_savestack,96,ANY);
474	PL_savestack_ix = 0;	496	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	497	PL_savestack_max = 96;
476		498
477	#if PERL_VERSION < 9	499	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	500	New(54,PL_retstack,8,OP*);
479	PL_retstack_ix = 0;	501	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	502	PL_retstack_max = 8;
481	#endif	503	#endif
482
483	UNLOCK;
484	}	504	}
485		505
486	/*	506	/*
487	* destroy the stacks, the callchain etc...	507	* destroy the stacks, the callchain etc...
488	*/	508	*/
489	static void	509	static void
490	destroy_stacks(pTHX)	510	coro_destroy_stacks ()
491	{	511	{
492	if (!IN_DESTRUCT)	512	if (!IN_DESTRUCT)
493	{	513	{
494	/* is this ugly, I ask? */	514	/* is this ugly, I ask? */
495	LEAVE_SCOPE (0);	515	LEAVE_SCOPE (0);
…		…
526		546
527	Safefree (PL_tmps_stack);	547	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	548	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	549	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	550	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	551	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	552	Safefree (PL_retstack);
533	#endif	553	#endif
534	}	554	}
535		555
536	static void	556	static void
537	allocate_stack (Coro__State ctx, int alloc)	557	setup_coro (struct coro *coro)
538	{
539	coro_stack *stack;
540
541	New (0, stack, 1, coro_stack);
542
543	stack->refcnt = 1;
544	stack->usecnt = 1;
545	stack->gencnt = ctx->gencnt = 0;
546
547	if (alloc)
548	{
549	#if HAVE_MMAP
550	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
552	if (stack->sptr != (void *)-1)
553	{
554	# if STACKGUARD
555	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
556	# endif
557	}
558	else
559	#endif
560	{
561	stack->ssize = - (STACKSIZE * (long)sizeof (long));
562	New (0, stack->sptr, STACKSIZE, long);
563	}
564	}
565	else
566	stack->sptr = 0;
567
568	ctx->stack = stack;
569	}
570
571	static void
572	deallocate_stack (Coro__State ctx)
573	{
574	coro_stack *stack = ctx->stack;
575
576	ctx->stack = 0;
577
578	if (stack)
579	{
580	if (!--stack->refcnt)
581	{
582	#ifdef HAVE_MMAP
583	if (stack->ssize > 0 && stack->sptr)
584	munmap (stack->sptr, stack->ssize);
585	else
586	#endif
587	Safefree (stack->sptr);
588
589	Safefree (stack);
590	}
591	else if (ctx->gencnt == stack->gencnt)
592	--stack->usecnt;
593	}
594	}
595
596	static void
597	setup_coro (void *arg)
598	{	558	{
599	/*	559	/*
600	* emulate part of the perl startup here.	560	* emulate part of the perl startup here.
601	*/	561	*/
602	dTHX;
603	dSP;
604	Coro__State ctx = (Coro__State)arg;
605	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
606		562
607	coro_init_stacks (aTHX);	563	coro_init_stacks ();
		564
608	/PL_curcop = 0;/	565	PL_curcop = 0;
609	/PL_in_eval = PL_in_eval;/ /* inherit */	566	PL_in_eval = 0;
		567	PL_curpm = 0;
		568
		569	{
		570	dSP;
		571	LOGOP myop;
		572
		573	/* I have no idea why this is needed, but it is */
		574	PUSHMARK (SP);
		575
610	SvREFCNT_dec (GvAV (PL_defgv));	576	SvREFCNT_dec (GvAV (PL_defgv));
611	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	577	GvAV (PL_defgv) = coro->args; coro->args = 0;
612		578
613	SPAGAIN;
614
615	if (ctx->stack)
616	{
617	ctx->cursp = 0;
618
619	PUSHMARK(SP);
620	PUTBACK;
621	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
622
623	if (SvTRUE (ERRSV))
624	croak (NULL);
625	else
626	croak ("FATAL: CCTXT coroutine returned!");
627	}
628	else
629	{
630	UNOP myop;
631
632	Zero(&myop, 1, UNOP);	579	Zero (&myop, 1, LOGOP);
633	myop.op_next = Nullop;	580	myop.op_next = Nullop;
634	myop.op_flags = OPf_WANT_VOID;	581	myop.op_flags = OPf_WANT_VOID;
635		582
636	PL_op = (OP *)&myop;	583	PL_op = (OP *)&myop;
637		584
638	PUSHMARK(SP);	585	PUSHMARK (SP);
639	XPUSHs (sub_init);	586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
640	/*
641	* the next line is slightly wrong, as PL_op->op_next
642	* is actually being executed so we skip the first op.
643	* that doesn't matter, though, since it is only
644	* pp_nextstate and we never return...
645	* ah yes, and I don't care anyways ;)
646	*/
647	PUTBACK;	587	PUTBACK;
648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
649	SPAGAIN;	589	SPAGAIN;
650		590
651	ENTER; /* necessary e.g. for dounwind */	591	ENTER; /* necessary e.g. for dounwind */
652	}	592	}
653	}	593	}
654		594
655	static void	595	static void
656	continue_coro (void *arg)	596	free_coro_mortal ()
657	{	597	{
658	/*
659	* this is a _very_ stripped down perl interpreter ;)
660	*/
661	dTHX;
662	Coro__State ctx = (Coro__State)arg;
663
664	PL_top_env = &PL_start_env;
665
666	ctx->cursp = 0;
667	PL_op = PL_op->op_next;
668	CALLRUNOPS(aTHX);
669
670	abort ();
671	}
672
673	/* never call directly, always through the coro_state_transfer global variable */
674	static void
675	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
676	{
677	dSTACKLEVEL;
678
679	if (prev != next)
680	{
681	/* has this coro been created yet? */
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	/* create the coroutine for the first time */
731	if (flags & TRANSFER_SAVE_CCTXT)
732	{
733	if (!prev->stack)
734	allocate_stack (prev, 0);
735
736	/* the new coroutine starts with start_env again */
737	PL_top_env = &PL_start_env;
738
739	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
740	{
741	setup_coro (next);
742	next->cursp = stacklevel;
743
744	prev->stack->refcnt++;
745	prev->stack->usecnt++;
746	next->stack = prev->stack;
747	next->gencnt = prev->gencnt;
748	}
749	else
750	{
751	assert (!next->stack);
752	allocate_stack (next, 1);
753	coro_create (&(next->stack->cctx),
754	setup_coro, (void *)next,
755	next->stack->sptr, labs (next->stack->ssize));
756	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
757	prev->cursp = stacklevel;
758	/* don't add any code here */
759	}
760	}
761	else
762	{
763	setup_coro (next);
764	next->cursp = stacklevel;
765	}
766	}
767	}
768
769	LOCK;
770	if (coro_mortal)	598	if (coro_mortal)
771	{	599	{
772	SvREFCNT_dec (coro_mortal);	600	SvREFCNT_dec (coro_mortal);
773	coro_mortal = 0;	601	coro_mortal = 0;
774	}	602	}
		603	}
		604
		605	static void NOINLINE
		606	prepare_cctx (coro_cctx *cctx)
		607	{
		608	dSP;
		609	LOGOP myop;
		610
		611	Zero (&myop, 1, LOGOP);
		612	myop.op_next = PL_op;
		613	myop.op_flags = OPf_WANT_VOID;
		614
		615	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		616
		617	PUSHMARK (SP);
		618	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		619	PUTBACK;
		620	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		621	SPAGAIN;
		622	}
		623
		624	static void
		625	coro_run (void *arg)
		626	{
		627	/* coro_run is the alternative epilogue of transfer() */
775	UNLOCK;	628	UNLOCK;
776	}
777		629
778	/* use this function pointer to call the above function */	630	/*
779	/* this is done to increase chances of the compiler not inlining the call */	631	* this is a _very_ stripped down perl interpreter ;)
780	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	632	*/
		633	PL_top_env = &PL_start_env;
		634
		635	/* inject call to cctx_init */
		636	prepare_cctx ((coro_cctx *)arg);
		637
		638	/* somebody will hit me for both perl_run and PL_restartop */
		639	perl_run (PL_curinterp);
		640
		641	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
		642	abort ();
		643	}
		644
		645	static coro_cctx *
		646	cctx_new ()
		647	{
		648	coro_cctx *cctx;
		649
		650	++cctx_count;
		651
		652	New (0, cctx, 1, coro_cctx);
		653
		654	#if HAVE_MMAP
		655
		656	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		657	/* mmap suppsedly does allocate-on-write for us */
		658	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		659
		660	if (cctx->sptr == (void *)-1)
		661	{
		662	perror ("FATAL: unable to mmap stack for coroutine");
		663	_exit (EXIT_FAILURE);
		664	}
		665
		666	# if STACKGUARD
		667	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		668	# endif
		669
		670	#else
		671
		672	cctx->ssize = STACKSIZE * (long)sizeof (long);
		673	New (0, cctx->sptr, STACKSIZE, long);
		674
		675	if (!cctx->sptr)
		676	{
		677	perror ("FATAL: unable to malloc stack for coroutine");
		678	_exit (EXIT_FAILURE);
		679	}
		680
		681	#endif
		682
		683	#if USE_VALGRIND
		684	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		685	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		686	cctx->ssize + (char *)cctx->sptr
		687	);
		688	#endif
		689
		690	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		691
		692	return cctx;
		693	}
		694
		695	static void
		696	cctx_free (coro_cctx *cctx)
		697	{
		698	if (!cctx)
		699	return;
		700
		701	--cctx_count;
		702
		703	#if USE_VALGRIND
		704	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		705	#endif
		706
		707	#if HAVE_MMAP
		708	munmap (cctx->sptr, cctx->ssize);
		709	#else
		710	Safefree (cctx->sptr);
		711	#endif
		712
		713	Safefree (cctx);
		714	}
		715
		716	static coro_cctx *
		717	cctx_get ()
		718	{
		719	coro_cctx *cctx;
		720
		721	if (cctx_first)
		722	{
		723	--cctx_idle;
		724	cctx = cctx_first;
		725	cctx_first = cctx->next;
		726	}
		727	else
		728	{
		729	cctx = cctx_new ();
		730	PL_op = PL_op->op_next;
		731	}
		732
		733	return cctx;
		734	}
		735
		736	static void
		737	cctx_put (coro_cctx *cctx)
		738	{
		739	++cctx_idle;
		740	cctx->next = cctx_first;
		741	cctx_first = cctx;
		742	}
		743
		744	/* never call directly, always through the coro_state_transfer global variable */
		745	static void NOINLINE
		746	transfer (struct coro prev, struct coro next, int flags)
		747	{
		748	dSTACKLEVEL;
		749
		750	/* sometimes transfer is only called to set idle_sp */
		751	if (flags == TRANSFER_SET_STACKLEVEL)
		752	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		753	else if (prev != next)
		754	{
		755	coro_cctx *prev__cctx;
		756
		757	LOCK;
		758
		759	if (next->mainstack)
		760	{
		761	/* coroutine already started */
		762	SAVE (prev, flags);
		763	LOAD (next);
		764	}
		765	else
		766	{
		767	/* need to start coroutine */
		768	/* first get rid of the old state */
		769	SAVE (prev, -1);
		770	/* setup coroutine call */
		771	setup_coro (next);
		772	/* need a stack */
		773	next->cctx = 0;
		774	}
		775
		776	if (!prev->cctx)
		777	/* create a new empty context */
		778	Newz (0, prev->cctx, 1, coro_cctx);
		779
		780	prev__cctx = prev->cctx;
		781
		782	/* possibly "free" the cctx */
		783	if (prev__cctx->idle_sp == STACKLEVEL)
		784	{
		785	cctx_put (prev__cctx);
		786	prev->cctx = 0;
		787	}
		788
		789	if (!next->cctx)
		790	next->cctx = cctx_get ();
		791
		792	if (prev__cctx != next->cctx)
		793	{
		794	prev__cctx->top_env = PL_top_env;
		795	PL_top_env = next->cctx->top_env;
		796	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		797	}
		798
		799	free_coro_mortal ();
		800
		801	UNLOCK;
		802	}
		803	}
		804
		805	struct transfer_args
		806	{
		807	struct coro prev, next;
		808	int flags;
		809	};
		810
		811	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
781		812
782	static void	813	static void
783	coro_state_destroy (struct coro *coro)	814	coro_state_destroy (struct coro *coro)
784	{	815	{
785	if (coro->refcnt--)	816	if (coro->refcnt--)
…		…
787		818
788	if (coro->mainstack && coro->mainstack != main_mainstack)	819	if (coro->mainstack && coro->mainstack != main_mainstack)
789	{	820	{
790	struct coro temp;	821	struct coro temp;
791		822
792	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	823	SAVE ((&temp), TRANSFER_SAVE_ALL);
793	LOAD (aTHX_ coro);	824	LOAD (coro);
794		825
795	destroy_stacks (aTHX);	826	coro_destroy_stacks ();
796		827
797	LOAD ((&temp)); /* this will get rid of defsv etc.. */	828	LOAD ((&temp)); /* this will get rid of defsv etc.. */
798		829
799	coro->mainstack = 0;	830	coro->mainstack = 0;
800	}	831	}
801		832
802	deallocate_stack (coro);	833	cctx_free (coro->cctx);
803	SvREFCNT_dec (coro->args);	834	SvREFCNT_dec (coro->args);
804	Safefree (coro);	835	Safefree (coro);
805	}	836	}
806		837
807	static int	838	static int
808	coro_state_clear (SV sv, MAGIC mg)	839	coro_state_clear (pTHX_ SV sv, MAGIC mg)
809	{	840	{
810	struct coro coro = (struct coro )mg->mg_ptr;	841	struct coro coro = (struct coro )mg->mg_ptr;
811	mg->mg_ptr = 0;	842	mg->mg_ptr = 0;
812		843
813	coro_state_destroy (coro);	844	coro_state_destroy (coro);
814		845
815	return 0;	846	return 0;
816	}	847	}
817		848
818	static int	849	static int
819	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	850	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
820	{	851	{
821	struct coro coro = (struct coro )mg->mg_ptr;	852	struct coro coro = (struct coro )mg->mg_ptr;
822		853
823	++coro->refcnt;	854	++coro->refcnt;
824		855
825	return 0;	856	return 0;
826	}	857	}
827		858
828	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	859	static MGVTBL coro_state_vtbl = {
		860	0, 0, 0, 0,
		861	coro_state_clear,
		862	0,
		863	#ifdef MGf_DUP
		864	coro_state_dup,
		865	#else
		866	# define MGf_DUP 0
		867	#endif
		868	};
829		869
830	static struct coro *	870	static struct coro *
831	SvSTATE (SV *coro)	871	SvSTATE (SV *coro)
832	{	872	{
833	HV *stash;	873	HV *stash;
…		…
848	assert (mg->mg_type == PERL_MAGIC_ext);	888	assert (mg->mg_type == PERL_MAGIC_ext);
849	return (struct coro *)mg->mg_ptr;	889	return (struct coro *)mg->mg_ptr;
850	}	890	}
851		891
852	static void	892	static void
		893	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		894	{
		895	ta->prev = SvSTATE (prev);
		896	ta->next = SvSTATE (next);
		897	ta->flags = flags;
		898	}
		899
		900	static void
853	api_transfer (pTHX_ SV prev, SV next, int flags)	901	api_transfer (SV prev, SV next, int flags)
854	{	902	{
855	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	903	dTHX;
		904	struct transfer_args ta;
		905
		906	prepare_transfer (&ta, prev, next, flags);
		907	TRANSFER (ta);
856	}	908	}
857		909
858	/ Coro ******************************************************************/	910	/ Coro ******************************************************************/
859		911
860	#define PRIO_MAX 3	912	#define PRIO_MAX 3
…		…
868	static GV coro_current, coro_idle;	920	static GV coro_current, coro_idle;
869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
870	static int coro_nready;	922	static int coro_nready;
871		923
872	static void	924	static void
873	coro_enq (pTHX_ SV *sv)	925	coro_enq (SV *sv)
874	{	926	{
875	int prio;	927	int prio;
876		928
877	if (SvTYPE (sv) != SVt_PVHV)	929	if (SvTYPE (sv) != SVt_PVHV)
878	croak ("Coro::ready tried to enqueue something that is not a coroutine");	930	croak ("Coro::ready tried to enqueue something that is not a coroutine");
…		…
882	av_push (coro_ready [prio - PRIO_MIN], sv);	934	av_push (coro_ready [prio - PRIO_MIN], sv);
883	coro_nready++;	935	coro_nready++;
884	}	936	}
885		937
886	static SV *	938	static SV *
887	coro_deq (pTHX_ int min_prio)	939	coro_deq (int min_prio)
888	{	940	{
889	int prio = PRIO_MAX - PRIO_MIN;	941	int prio = PRIO_MAX - PRIO_MIN;
890		942
891	min_prio -= PRIO_MIN;	943	min_prio -= PRIO_MIN;
892	if (min_prio < 0)	944	if (min_prio < 0)
…		…
909		961
910	if (SvROK (coro))	962	if (SvROK (coro))
911	coro = SvRV (coro);	963	coro = SvRV (coro);
912		964
913	LOCK;	965	LOCK;
914	coro_enq (aTHX_ SvREFCNT_inc (coro));	966	coro_enq (SvREFCNT_inc (coro));
915	UNLOCK;	967	UNLOCK;
916	}	968	}
917		969
918	static void	970	static void
919	api_schedule (void)	971	prepare_schedule (struct transfer_args *ta)
920	{	972	{
921	dTHX;
922
923	SV prev, next;	973	SV current, prev, *next;
		974
924	SV *current = GvSV (coro_current);	975	current = GvSV (coro_current);
925		976
926	for (;;)	977	for (;;)
927	{	978	{
928	LOCK;	979	LOCK;
929
930	next = coro_deq (aTHX_ PRIO_MIN);	980	next = coro_deq (PRIO_MIN);
		981	UNLOCK;
931		982
932	if (next)	983	if (next)
933	break;	984	break;
934
935	UNLOCK;
936		985
937	{	986	{
938	dSP;	987	dSP;
939		988
940	ENTER;	989	ENTER;
…		…
951		1000
952	prev = SvRV (current);	1001	prev = SvRV (current);
953	SvRV (current) = next;	1002	SvRV (current) = next;
954		1003
955	/* free this only after the transfer */	1004	/* free this only after the transfer */
		1005	LOCK;
		1006	free_coro_mortal ();
		1007	UNLOCK;
956	coro_mortal = prev;	1008	coro_mortal = prev;
957		1009
		1010	ta->prev = SvSTATE (prev);
		1011	ta->next = SvSTATE (next);
		1012	ta->flags = TRANSFER_SAVE_ALL;
		1013	}
		1014
		1015	static void
		1016	prepare_cede (struct transfer_args *ta)
		1017	{
		1018	LOCK;
		1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
958	UNLOCK;	1020	UNLOCK;
959		1021
960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	1022	prepare_schedule (ta);
961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	1023	}
		1024
		1025	static void
		1026	api_schedule (void)
		1027	{
		1028	dTHX;
		1029	struct transfer_args ta;
		1030
		1031	prepare_schedule (&ta);
		1032	TRANSFER (ta);
962	}	1033	}
963		1034
964	static void	1035	static void
965	api_cede (void)	1036	api_cede (void)
966	{	1037	{
967	dTHX;	1038	dTHX;
		1039	struct transfer_args ta;
968		1040
969	LOCK;	1041	prepare_cede (&ta);
970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1042	TRANSFER (ta);
971	UNLOCK;
972
973	api_schedule ();
974	}	1043	}
975		1044
976	MODULE = Coro::State PACKAGE = Coro::State	1045	MODULE = Coro::State PACKAGE = Coro::State
977		1046
978	PROTOTYPES: DISABLE	1047	PROTOTYPES: DISABLE
…		…
987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1056	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
988		1057
989	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1058	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
990	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1059	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
991	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1060	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
992	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
993		1061
994	main_mainstack = PL_mainstack;	1062	main_mainstack = PL_mainstack;
995		1063
996	coroapi.ver = CORO_API_VERSION;	1064	coroapi.ver = CORO_API_VERSION;
997	coroapi.transfer = api_transfer;	1065	coroapi.transfer = api_transfer;
…		…
1008	int i;	1076	int i;
1009		1077
1010	Newz (0, coro, 1, struct coro);	1078	Newz (0, coro, 1, struct coro);
1011	coro->args = newAV ();	1079	coro->args = newAV ();
1012		1080
1013	for (i = 1; i < items; i++)
1014	av_push (coro->args, newSVsv (ST (i)));
1015
1016	/coro->mainstack = 0; //actual work is done inside transfer /
1017	/coro->stack = 0;/
1018
1019	hv = newHV ();	1081	hv = newHV ();
1020	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1082	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1021	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1083	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1084
		1085	for (i = 1; i < items; i++)
		1086	av_push (coro->args, newSVsv (ST (i)));
1022	}	1087	}
1023	OUTPUT:	1088	OUTPUT:
1024	RETVAL	1089	RETVAL
1025		1090
1026	void	1091	void
1027	transfer(prev, next, flags)	1092	_set_stacklevel (...)
1028	SV *prev	1093	ALIAS:
1029	SV *next	1094	Coro::State::transfer = 1
1030	int flags	1095	Coro::schedule = 2
		1096	Coro::cede = 3
		1097	Coro::Cont::yield = 4
1031	CODE:	1098	CODE:
1032	PUTBACK;
1033	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1034	SPAGAIN;
1035
1036	int
1037	prio (Coro::State coro, int newprio = 0)
1038	ALIAS:
1039	nice = 1
1040	CODE:
1041	{	1099	{
1042	RETVAL = coro->prio;	1100	struct transfer_args ta;
1043		1101
1044	if (items > 1)	1102	switch (ix)
1045	{	1103	{
		1104	case 0:
		1105	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1106	ta.next = 0;
		1107	ta.flags = TRANSFER_SET_STACKLEVEL;
		1108	break;
		1109
		1110	case 1:
1046	if (ix)	1111	if (items != 3)
1047	newprio += coro->prio;	1112	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1048		1113
1049	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1050	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1115	break;
1051		1116
1052	coro->prio = newprio;	1117	case 2:
		1118	prepare_schedule (&ta);
		1119	break;
		1120
		1121	case 3:
		1122	prepare_cede (&ta);
		1123	break;
		1124
		1125	case 4:
		1126	{
		1127	SV *yieldstack;
		1128	SV *sv;
		1129	AV *defav = GvAV (PL_defgv);
		1130
		1131	yieldstack = *hv_fetch (
		1132	(HV *)SvRV (GvSV (coro_current)),
		1133	"yieldstack", sizeof ("yieldstack") - 1,
		1134	0
		1135	);
		1136
		1137	/* set up @_ -- ugly */
		1138	av_clear (defav);
		1139	av_fill (defav, items - 1);
		1140	while (items--)
		1141	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1142
		1143	sv = av_pop ((AV *)SvRV (yieldstack));
		1144	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1145	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1146	ta.flags = 0;
		1147	SvREFCNT_dec (sv);
		1148	}
		1149	break;
		1150
1053	}	1151	}
		1152
		1153	TRANSFER (ta);
1054	}	1154	}
1055		1155
1056	void	1156	void
1057	_clone_state_from (SV dst, SV src)	1157	_clone_state_from (SV dst, SV src)
1058	CODE:	1158	CODE:
…		…
1070	int code	1170	int code
1071	PROTOTYPE: $	1171	PROTOTYPE: $
1072	CODE:	1172	CODE:
1073	_exit (code);	1173	_exit (code);
1074		1174
1075	MODULE = Coro::State PACKAGE = Coro::Cont	1175	int
		1176	cctx_count ()
		1177	CODE:
		1178	RETVAL = cctx_count;
		1179	OUTPUT:
		1180	RETVAL
1076		1181
1077	void	1182	int
1078	yield (...)	1183	cctx_idle ()
1079	PROTOTYPE: @	1184	CODE:
1080	CODE:	1185	RETVAL = cctx_idle;
1081	{	1186	OUTPUT:
1082	SV *yieldstack;	1187	RETVAL
1083	SV *sv;
1084	AV *defav = GvAV (PL_defgv);
1085	struct coro prev, next;
1086
1087	yieldstack = *hv_fetch (
1088	(HV *)SvRV (GvSV (coro_current)),
1089	"yieldstack", sizeof ("yieldstack") - 1,
1090	0
1091	);
1092
1093	/* set up @_ -- ugly */
1094	av_clear (defav);
1095	av_fill (defav, items - 1);
1096	while (items--)
1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
1098
1099	sv = av_pop ((AV *)SvRV (yieldstack));
1100	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1101	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1102	SvREFCNT_dec (sv);
1103
1104	coro_state_transfer (aTHX_ prev, next, 0);
1105	}
1106		1188
1107	MODULE = Coro::State PACKAGE = Coro	1189	MODULE = Coro::State PACKAGE = Coro
1108		1190
1109	BOOT:	1191	BOOT:
1110	{	1192	{
…		…
1138	sv_setiv (sv, (IV)&coroapi);	1220	sv_setiv (sv, (IV)&coroapi);
1139	SvREADONLY_on (sv);	1221	SvREADONLY_on (sv);
1140	}	1222	}
1141	}	1223	}
1142		1224
1143	#if !PERL_MICRO	1225	int
		1226	prio (Coro::State coro, int newprio = 0)
		1227	ALIAS:
		1228	nice = 1
		1229	CODE:
		1230	{
		1231	RETVAL = coro->prio;
		1232
		1233	if (items > 1)
		1234	{
		1235	if (ix)
		1236	newprio += coro->prio;
		1237
		1238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1240
		1241	coro->prio = newprio;
		1242	}
		1243	}
1144		1244
1145	void	1245	void
1146	ready (self)	1246	ready (SV *self)
1147	SV * self
1148	PROTOTYPE: $	1247	PROTOTYPE: $
1149	CODE:	1248	CODE:
1150	api_ready (self);	1249	api_ready (self);
1151
1152	#endif
1153		1250
1154	int	1251	int
1155	nready (...)	1252	nready (...)
1156	PROTOTYPE:	1253	PROTOTYPE:
1157	CODE:	1254	CODE:
1158	RETVAL = coro_nready;	1255	RETVAL = coro_nready;
1159	OUTPUT:	1256	OUTPUT:
1160	RETVAL	1257	RETVAL
1161		1258
1162	void	1259	MODULE = Coro::State PACKAGE = Coro::AIO
1163	schedule (...)
1164	PROTOTYPE:
1165	CODE:
1166	api_schedule ();
1167		1260
1168	void
1169	cede (...)
1170	PROTOTYPE:
1171	CODE:
1172	api_cede ();
1173
1174	# and these are hacks
1175	SV *	1261	SV *
1176	_aio_get_state ()	1262	_get_state ()
1177	CODE:	1263	CODE:
1178	{	1264	{
1179	struct {	1265	struct {
1180	int errorno;	1266	int errorno;
1181	int laststype;	1267	int laststype;
…		…
1192	}	1278	}
1193	OUTPUT:	1279	OUTPUT:
1194	RETVAL	1280	RETVAL
1195		1281
1196	void	1282	void
1197	_aio_set_state (char *data_)	1283	_set_state (char *data_)
1198	PROTOTYPE: $	1284	PROTOTYPE: $
1199	CODE:	1285	CODE:
1200	{	1286	{
1201	struct {	1287	struct {
1202	int errorno;	1288	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs. Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs.
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC