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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC vs.
Revision 1.102 by root, Mon Nov 27 01:28:03 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 optional C context */	117	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	118	coro_stack *stack;
107	void *cursp;	119
		120	/* data associated with this coroutine (initial args) */
		121	AV *args;
108	int gencnt;	122	int refcnt;
109		123
110	/* optionally saved, might be zero */	124	/* optionally saved, might be zero */
111	AV *defav;	125	AV *defav;
112	SV *defsv;	126	SV *defsv;
113	SV *errsv;	127	SV *errsv;
…		…
143	OP **retstack;	157	OP **retstack;
144	I32 retstack_ix;	158	I32 retstack_ix;
145	I32 retstack_max;	159	I32 retstack_max;
146	PMOP *curpm;	160	PMOP *curpm;
147	COP *curcop;	161	COP *curcop;
148	JMPENV *top_env;
149		162
150	/* coro process data */	163	/* coro process data */
151	int prio;	164	int prio;
152
153	/* data associated with this coroutine (initial args) */
154	AV *args;
155	int refcnt;
156	};	165	};
157		166
158	typedef struct coro *Coro__State;	167	typedef struct coro *Coro__State;
159	typedef struct coro *Coro__State_or_hashref;	168	typedef struct coro *Coro__State_or_hashref;
160		169
161	static AV *	170	static AV *
162	coro_clone_padlist (pTHX_ CV *cv)	171	coro_clone_padlist (CV *cv)
163	{	172	{
164	AV *padlist = CvPADLIST (cv);	173	AV *padlist = CvPADLIST (cv);
165	AV newpadlist, newpad;	174	AV newpadlist, newpad;
166		175
167	newpadlist = newAV ();	176	newpadlist = newAV ();
168	AvREAL_off (newpadlist);	177	AvREAL_off (newpadlist);
169	#if PERL_VERSION < 9	178	#if PERL_VERSION_ATLEAST (5,9,0)
		179	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		180	#else
170	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	181	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
171	#else
172	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
173	#endif	182	#endif
174	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	183	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
175	--AvFILLp (padlist);	184	--AvFILLp (padlist);
176		185
177	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	186	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
179		188
180	return newpadlist;	189	return newpadlist;
181	}	190	}
182		191
183	static void	192	static void
184	free_padlist (pTHX_ AV *padlist)	193	free_padlist (AV *padlist)
185	{	194	{
186	/* may be during global destruction */	195	/* may be during global destruction */
187	if (SvREFCNT (padlist))	196	if (SvREFCNT (padlist))
188	{	197	{
189	I32 i = AvFILLp (padlist);	198	I32 i = AvFILLp (padlist);
…		…
210	AV *padlist;	219	AV *padlist;
211	AV av = (AV )mg->mg_obj;	220	AV av = (AV )mg->mg_obj;
212		221
213	/* casting is fun. */	222	/* casting is fun. */
214	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	223	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
215	free_padlist (aTHX_ padlist);	224	free_padlist (padlist);
216		225
217	SvREFCNT_dec (av);	226	SvREFCNT_dec (av);
218		227
219	return 0;	228	return 0;
220	}	229	}
…		…
223		232
224	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
225		234
226	/* the next two functions merely cache the padlists */	235	/* the next two functions merely cache the padlists */
227	static void	236	static void
228	get_padlist (pTHX_ CV *cv)	237	get_padlist (CV *cv)
229	{	238	{
230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
231		240
232	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
233	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
234	else	243	else
235	{	244	{
236	#if 0	245	#if 0
237	/* this should work - but it doesn't :( */	246	/* this is probably cleaner, but also slower? */
238	CV *cp = Perl_cv_clone (aTHX_ cv);	247	CV *cp = Perl_cv_clone (cv);
239	CvPADLIST (cv) = CvPADLIST (cp);	248	CvPADLIST (cv) = CvPADLIST (cp);
240	CvPADLIST (cp) = 0;	249	CvPADLIST (cp) = 0;
241	SvREFCNT_dec (cp);	250	SvREFCNT_dec (cp);
242	#else	251	#else
243	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	252	CvPADLIST (cv) = coro_clone_padlist (cv);
244	#endif	253	#endif
245	}	254	}
246	}	255	}
247		256
248	static void	257	static void
249	put_padlist (pTHX_ CV *cv)	258	put_padlist (CV *cv)
250	{	259	{
251	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
252		261
253	if (!mg)	262	if (!mg)
254	{	263	{
…		…
262	}	271	}
263		272
264	#define SB do {	273	#define SB do {
265	#define SE } while (0)	274	#define SE } while (0)
266		275
267	#define LOAD(state) load_state(aTHX_ (state));	276	#define LOAD(state) load_state((state));
268	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	277	#define SAVE(state,flags) save_state((state),(flags));
269		278
270	#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
271		280
272	static void	281	static void
273	load_state(pTHX_ Coro__State c)	282	load_state(Coro__State c)
274	{	283	{
275	PL_dowarn = c->dowarn;	284	PL_dowarn = c->dowarn;
276	PL_in_eval = c->in_eval;	285	PL_in_eval = c->in_eval;
277		286
278	PL_curstackinfo = c->curstackinfo;	287	PL_curstackinfo = c->curstackinfo;
…		…
296	PL_scopestack_ix = c->scopestack_ix;	305	PL_scopestack_ix = c->scopestack_ix;
297	PL_scopestack_max = c->scopestack_max;	306	PL_scopestack_max = c->scopestack_max;
298	PL_savestack = c->savestack;	307	PL_savestack = c->savestack;
299	PL_savestack_ix = c->savestack_ix;	308	PL_savestack_ix = c->savestack_ix;
300	PL_savestack_max = c->savestack_max;	309	PL_savestack_max = c->savestack_max;
301	#if PERL_VERSION < 9	310	#if !PERL_VERSION_ATLEAST (5,9,0)
302	PL_retstack = c->retstack;	311	PL_retstack = c->retstack;
303	PL_retstack_ix = c->retstack_ix;	312	PL_retstack_ix = c->retstack_ix;
304	PL_retstack_max = c->retstack_max;	313	PL_retstack_max = c->retstack_max;
305	#endif	314	#endif
306	PL_curpm = c->curpm;	315	PL_curpm = c->curpm;
307	PL_curcop = c->curcop;	316	PL_curcop = c->curcop;
308	PL_top_env = c->top_env;
309		317
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
313		321
…		…
320	{	328	{
321	AV padlist = (AV )POPs;	329	AV padlist = (AV )POPs;
322		330
323	if (padlist)	331	if (padlist)
324	{	332	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	333	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	334	CvPADLIST(cv) = padlist;
327	}	335	}
328		336
329	++CvDEPTH(cv);	337	++CvDEPTH(cv);
330	}	338	}
…		…
332	PUTBACK;	340	PUTBACK;
333	}	341	}
334	}	342	}
335		343
336	static void	344	static void
337	save_state(pTHX_ Coro__State c, int flags)	345	save_state(Coro__State c, int flags)
338	{	346	{
339	{	347	{
340	dSP;	348	dSP;
341	I32 cxix = cxstack_ix;	349	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	350	PERL_CONTEXT *ccstk = cxstack;
…		…
370	}	378	}
371		379
372	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST(cv));
373	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
374		382
375	get_padlist (aTHX_ cv);	383	get_padlist (cv);
376	}	384	}
377	}	385	}
378	#ifdef CXt_FORMAT	386	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)	387	else if (CxTYPE(cx) == CXt_FORMAT)
380	{	388	{
…		…
424	c->scopestack_ix = PL_scopestack_ix;	432	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;	433	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;	434	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;	435	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;	436	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9	437	#if !PERL_VERSION_ATLEAST (5,9,0)
430	c->retstack = PL_retstack;	438	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;	439	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;	440	c->retstack_max = PL_retstack_max;
433	#endif	441	#endif
434	c->curpm = PL_curpm;	442	c->curpm = PL_curpm;
435	c->curcop = PL_curcop;	443	c->curcop = PL_curcop;
436	c->top_env = PL_top_env;
437	}	444	}
438		445
439	/*	446	/*
440	* allocate various perl stacks. This is an exact copy	447	* allocate various perl stacks. This is an exact copy
441	* of perl.c:init_stacks, except that it uses less memory	448	* of perl.c:init_stacks, except that it uses less memory
442	* on the (sometimes correct) assumption that coroutines do	449	* on the (sometimes correct) assumption that coroutines do
443	* not usually need a lot of stackspace.	450	* not usually need a lot of stackspace.
444	*/	451	*/
445	static void	452	static void
446	coro_init_stacks (pTHX)	453	coro_init_stacks ()
447	{	454	{
448	LOCK;
449
450	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
451	PL_curstackinfo->si_type = PERLSI_MAIN;	456	PL_curstackinfo->si_type = PERLSI_MAIN;
452	PL_curstack = PL_curstackinfo->si_stack;	457	PL_curstack = PL_curstackinfo->si_stack;
453	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
454		459
…		…
475		480
476	New(54,PL_savestack,96,ANY);	481	New(54,PL_savestack,96,ANY);
477	PL_savestack_ix = 0;	482	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	483	PL_savestack_max = 96;
479		484
480	#if PERL_VERSION < 9	485	#if !PERL_VERSION_ATLEAST (5,9,0)
481	New(54,PL_retstack,8,OP*);	486	New(54,PL_retstack,8,OP*);
482	PL_retstack_ix = 0;	487	PL_retstack_ix = 0;
483	PL_retstack_max = 8;	488	PL_retstack_max = 8;
484	#endif	489	#endif
485
486	UNLOCK;
487	}	490	}
488		491
489	/*	492	/*
490	* destroy the stacks, the callchain etc...	493	* destroy the stacks, the callchain etc...
491	*/	494	*/
492	static void	495	static void
493	destroy_stacks(pTHX)	496	coro_destroy_stacks()
494	{	497	{
495	if (!IN_DESTRUCT)	498	if (!IN_DESTRUCT)
496	{	499	{
497	/* is this ugly, I ask? */	500	/* is this ugly, I ask? */
498	LEAVE_SCOPE (0);	501	LEAVE_SCOPE (0);
…		…
529		532
530	Safefree (PL_tmps_stack);	533	Safefree (PL_tmps_stack);
531	Safefree (PL_markstack);	534	Safefree (PL_markstack);
532	Safefree (PL_scopestack);	535	Safefree (PL_scopestack);
533	Safefree (PL_savestack);	536	Safefree (PL_savestack);
534	#if PERL_VERSION < 9	537	#if !PERL_VERSION_ATLEAST (5,9,0)
535	Safefree (PL_retstack);	538	Safefree (PL_retstack);
536	#endif	539	#endif
537	}	540	}
538		541
539	static void	542	static void
540	allocate_stack (Coro__State ctx, int alloc)	543	setup_coro (struct coro *coro)
541	{
542	coro_stack *stack;
543
544	New (0, stack, 1, coro_stack);
545
546	stack->refcnt = 1;
547	stack->usecnt = 1;
548	stack->gencnt = ctx->gencnt = 0;
549
550	if (alloc)
551	{
552	#if HAVE_MMAP
553	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
554	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
555	if (stack->sptr != (void *)-1)
556	{
557	# if STACKGUARD
558	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
559	# endif
560	}
561	else
562	#endif
563	{
564	stack->ssize = - (STACKSIZE * (long)sizeof (long));
565	New (0, stack->sptr, STACKSIZE, long);
566	}
567	}
568	else
569	stack->sptr = 0;
570
571	ctx->stack = stack;
572	}
573
574	static void
575	deallocate_stack (Coro__State ctx)
576	{
577	coro_stack *stack = ctx->stack;
578
579	ctx->stack = 0;
580
581	if (stack)
582	{
583	if (!--stack->refcnt)
584	{
585	#ifdef HAVE_MMAP
586	if (stack->ssize > 0 && stack->sptr)
587	munmap (stack->sptr, stack->ssize);
588	else
589	#endif
590	Safefree (stack->sptr);
591
592	Safefree (stack);
593	}
594	else if (ctx->gencnt == stack->gencnt)
595	--stack->usecnt;
596	}
597	}
598
599	static void
600	setup_coro (void *arg)
601	{	544	{
602	/*	545	/*
603	* emulate part of the perl startup here.	546	* emulate part of the perl startup here.
604	*/	547	*/
605	dTHX;
606	dSP;
607	Coro__State ctx = (Coro__State)arg;
608	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
609		548
610	coro_init_stacks (aTHX);	549	coro_init_stacks ();
		550
		551	{
		552	dSP;
		553	LOGOP myop;
		554
611	/PL_curcop = 0;/	555	/PL_curcop = 0;/
612	/PL_in_eval = PL_in_eval;/ /* inherit */	556	PL_in_eval = 0;
613	SvREFCNT_dec (GvAV (PL_defgv));	557	SvREFCNT_dec (GvAV (PL_defgv));
614	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	558	GvAV (PL_defgv) = coro->args; coro->args = 0;
615		559
616	SPAGAIN;	560	SPAGAIN;
617		561
618	if (ctx->stack)
619	{
620	ctx->cursp = 0;
621
622	PUSHMARK(SP);
623	PUTBACK;
624	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
625
626	if (SvTRUE (ERRSV))
627	croak (NULL);
628	else
629	croak ("FATAL: CCTXT coroutine returned!");
630	}
631	else
632	{
633	UNOP myop;
634
635	Zero(&myop, 1, UNOP);	562	Zero (&myop, 1, LOGOP);
636	myop.op_next = Nullop;	563	myop.op_next = Nullop;
637	myop.op_flags = OPf_WANT_VOID;	564	myop.op_flags = OPf_WANT_VOID;
638		565
639	PL_op = (OP *)&myop;	566	PL_op = (OP *)&myop;
640		567
641	PUSHMARK(SP);	568	PUSHMARK (SP);
642	XPUSHs (sub_init);	569	PUSHMARK (SP);
643	/*	570	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
644	* the next line is slightly wrong, as PL_op->op_next
645	* is actually being executed so we skip the first op.
646	* that doesn't matter, though, since it is only
647	* pp_nextstate and we never return...
648	* ah yes, and I don't care anyways ;)
649	*/
650	PUTBACK;	571	PUTBACK;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	572	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;	573	SPAGAIN;
653		574
654	ENTER; /* necessary e.g. for dounwind */	575	ENTER; /* necessary e.g. for dounwind */
655	}	576	}
656	}	577	}
657		578
658	static void	579	static void
659	continue_coro (void *arg)	580	free_coro_mortal ()
660	{	581	{
661	/*
662	* this is a _very_ stripped down perl interpreter ;)
663	*/
664	dTHX;
665	Coro__State ctx = (Coro__State)arg;
666
667	PL_top_env = &PL_start_env;
668
669	ctx->cursp = 0;
670	PL_op = PL_op->op_next;
671	CALLRUNOPS(aTHX);
672
673	abort ();
674	}
675
676	/* never call directly, always through the coro_state_transfer global variable */
677	static void
678	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
679	{
680	dSTACKLEVEL;
681
682	if (prev != next)
683	{
684	/* has this coro been created yet? */
685	if (next->mainstack)
686	{
687	LOCK;
688	SAVE (prev, flags);
689	LOAD (next);
690	UNLOCK;
691
692	/* mark this state as in-use */
693	next->mainstack = 0;
694	next->tmps_ix = -2;
695
696	/* stacklevel changed? if yes, grab the stack for us! */
697	if (flags & TRANSFER_SAVE_CCTXT)
698	{
699	if (!prev->stack)
700	allocate_stack (prev, 0);
701	else if (prev->cursp != stacklevel
702	&& prev->stack->usecnt > 1)
703	{
704	prev->gencnt = ++prev->stack->gencnt;
705	prev->stack->usecnt = 1;
706	}
707
708	/* has our stack been invalidated? */
709	if (next->stack && next->stack->gencnt != next->gencnt)
710	{
711	deallocate_stack (next);
712	allocate_stack (next, 1);
713	coro_create (&(next->stack->cctx),
714	continue_coro, (void *)next,
715	next->stack->sptr, labs (next->stack->ssize));
716	}
717
718	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
719	prev->cursp = stacklevel;
720	/* don't add any code here */
721	}
722	else
723	next->cursp = stacklevel;
724	}
725	else if (next->tmps_ix == -2)
726	croak ("tried to transfer to running coroutine");
727	else
728	{
729	LOCK;
730	SAVE (prev, -1); /* first get rid of the old state */
731	UNLOCK;
732
733	/* create the coroutine for the first time */
734	if (flags & TRANSFER_SAVE_CCTXT)
735	{
736	if (!prev->stack)
737	allocate_stack (prev, 0);
738
739	/* the new coroutine starts with start_env again */
740	PL_top_env = &PL_start_env;
741
742	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
743	{
744	setup_coro (next);
745	next->cursp = stacklevel;
746
747	prev->stack->refcnt++;
748	prev->stack->usecnt++;
749	next->stack = prev->stack;
750	next->gencnt = prev->gencnt;
751	}
752	else
753	{
754	assert (!next->stack);
755	allocate_stack (next, 1);
756	coro_create (&(next->stack->cctx),
757	setup_coro, (void *)next,
758	next->stack->sptr, labs (next->stack->ssize));
759	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
760	prev->cursp = stacklevel;
761	/* don't add any code here */
762	}
763	}
764	else
765	{
766	setup_coro (next);
767	next->cursp = stacklevel;
768	}
769	}
770	}
771
772	LOCK;
773	if (coro_mortal)	582	if (coro_mortal)
774	{	583	{
775	SvREFCNT_dec (coro_mortal);	584	SvREFCNT_dec (coro_mortal);
776	coro_mortal = 0;	585	coro_mortal = 0;
777	}	586	}
		587	}
		588
		589	static void NOINLINE
		590	prepare_cctx (coro_stack *cctx)
		591	{
		592	dSP;
		593	LOGOP myop;
		594
		595	Zero (&myop, 1, LOGOP);
		596	myop.op_next = PL_op;
		597	myop.op_flags = OPf_WANT_VOID;
		598
		599	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
		600
		601	PUSHMARK (SP);
		602	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
		603	PUTBACK;
		604	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		605	SPAGAIN;
		606	}
		607
		608	static void
		609	coro_run (void *arg)
		610	{
		611	/* coro_run is the alternative epilogue of transfer() */
778	UNLOCK;	612	UNLOCK;
779	}
780		613
781	/* use this function pointer to call the above function */	614	/*
782	/* this is done to increase chances of the compiler not inlining the call */	615	* this is a _very_ stripped down perl interpreter ;)
783	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	616	*/
		617	PL_top_env = &PL_start_env;
		618	/* inject call to cctx_init */
		619	prepare_cctx ((coro_stack *)arg);
784		620
785	#define SV_CORO(sv,func) \	621	/* somebody will hit me for both perl_run and PL_restartop */
786	do { \	622	perl_run (PL_curinterp);
787	if (SvROK (sv)) \	623
788	sv = SvRV (sv); \	624	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
789	\	625	abort ();
790	if (SvTYPE (sv) == SVt_PVHV && SvSTASH (sv) != coro_state_stash) \	626	}
791	{ \	627
792	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \	628	static coro_stack *
793	\	629	stack_new ()
794	if (!he) \	630	{
795	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \	631	coro_stack *stack;
796	\	632
797	(sv) = SvRV (HeVAL(he)); \	633	New (0, stack, 1, coro_stack);
798	} \	634
799	\	635	#if HAVE_MMAP
800	/* must also be changed inside Coro::Cont::yield */ \	636
801	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \	637	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
802	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \	638	/* mmap suppsedly does allocate-on-write for us */
803	\	639	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
804	} while(0)	640
		641	if (stack->sptr == (void *)-1)
		642	{
		643	perror ("FATAL: unable to mmap stack for coroutine");
		644	_exit (EXIT_FAILURE);
		645	}
		646
		647	# if STACKGUARD
		648	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		649	# endif
		650
		651	#else
		652
		653	stack->ssize = STACKSIZE * (long)sizeof (long);
		654	New (0, stack->sptr, STACKSIZE, long);
		655
		656	if (!stack->sptr)
		657	{
		658	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		659	_exit (EXIT_FAILURE);
		660	}
		661
		662	#endif
		663
		664	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		665
		666	return stack;
		667	}
		668
		669	static void
		670	stack_free (coro_stack *stack)
		671	{
		672	if (!stack)
		673	return;
		674
		675	#if HAVE_MMAP
		676	munmap (stack->sptr, stack->ssize);
		677	#else
		678	Safefree (stack->sptr);
		679	#endif
		680
		681	Safefree (stack);
		682	}
		683
		684	static coro_stack *stack_first;
		685	static int cctx_count, cctx_idle;
		686
		687	static coro_stack *
		688	stack_get ()
		689	{
		690	coro_stack *stack;
		691
		692	if (stack_first)
		693	{
		694	--cctx_idle;
		695	stack = stack_first;
		696	stack_first = stack->next;
		697	}
		698	else
		699	{
		700	++cctx_count;
		701	stack = stack_new ();
		702	PL_op = PL_op->op_next;
		703	}
		704
		705	return stack;
		706	}
		707
		708	static void
		709	stack_put (coro_stack *stack)
		710	{
		711	++cctx_idle;
		712	stack->next = stack_first;
		713	stack_first = stack;
		714	}
		715
		716	/* never call directly, always through the coro_state_transfer global variable */
		717	static void NOINLINE
		718	transfer (struct coro prev, struct coro next, int flags)
		719	{
		720	dSTACKLEVEL;
		721
		722	/* sometimes transfer is only called to set idle_sp */
		723	if (flags == TRANSFER_SET_STACKLEVEL)
		724	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		725	else if (prev != next)
		726	{
		727	coro_stack *prev__stack;
		728
		729	LOCK;
		730
		731	if (next->mainstack)
		732	{
		733	/* coroutine already started */
		734	SAVE (prev, flags);
		735	LOAD (next);
		736	}
		737	else
		738	{
		739	/* need to start coroutine */
		740	/* first get rid of the old state */
		741	SAVE (prev, -1);
		742	/* setup coroutine call */
		743	setup_coro (next);
		744	/* need a stack */
		745	next->stack = 0;
		746	}
		747
		748	if (!prev->stack)
		749	/* create a new empty context */
		750	Newz (0, prev->stack, 1, coro_stack);
		751
		752	prev__stack = prev->stack;
		753
		754	/* possibly "free" the stack */
		755	if (prev__stack->idle_sp == STACKLEVEL)
		756	{
		757	stack_put (prev__stack);
		758	prev->stack = 0;
		759	}
		760
		761	if (!next->stack)
		762	next->stack = stack_get ();
		763
		764	if (prev__stack != next->stack)
		765	{
		766	prev__stack->top_env = PL_top_env;
		767	PL_top_env = next->stack->top_env;
		768	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		769	}
		770
		771	free_coro_mortal ();
		772
		773	UNLOCK;
		774	}
		775	}
		776
		777	struct transfer_args
		778	{
		779	struct coro prev, next;
		780	int flags;
		781	};
		782
		783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
805		784
806	static void	785	static void
807	coro_state_destroy (struct coro *coro)	786	coro_state_destroy (struct coro *coro)
808	{	787	{
809	if (coro->refcnt--)	788	if (coro->refcnt--)
…		…
811		790
812	if (coro->mainstack && coro->mainstack != main_mainstack)	791	if (coro->mainstack && coro->mainstack != main_mainstack)
813	{	792	{
814	struct coro temp;	793	struct coro temp;
815		794
816	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	795	SAVE ((&temp), TRANSFER_SAVE_ALL);
817	LOAD (aTHX_ coro);	796	LOAD (coro);
818		797
819	destroy_stacks (aTHX);	798	coro_destroy_stacks ();
820		799
821	LOAD ((&temp)); /* this will get rid of defsv etc.. */	800	LOAD ((&temp)); /* this will get rid of defsv etc.. */
822		801
823	coro->mainstack = 0;	802	coro->mainstack = 0;
824	}	803	}
825		804
826	deallocate_stack (coro);	805	stack_free (coro->stack);
827	SvREFCNT_dec (coro->args);	806	SvREFCNT_dec (coro->args);
828	Safefree (coro);	807	Safefree (coro);
829	}	808	}
830		809
831	static int	810	static int
832	coro_state_clear (SV sv, MAGIC mg)	811	coro_state_clear (pTHX_ SV sv, MAGIC mg)
833	{	812	{
834	struct coro coro = (struct coro )mg->mg_ptr;	813	struct coro coro = (struct coro )mg->mg_ptr;
835	mg->mg_ptr = 0;	814	mg->mg_ptr = 0;
836		815
837	coro_state_destroy (coro);	816	coro_state_destroy (coro);
838		817
839	return 0;	818	return 0;
840	}	819	}
841		820
842	static int	821	static int
843	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	822	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
844	{	823	{
845	struct coro coro = (struct coro )mg->mg_ptr;	824	struct coro coro = (struct coro )mg->mg_ptr;
846		825
847	++coro->refcnt;	826	++coro->refcnt;
848		827
849	return 0;	828	return 0;
850	}	829	}
851		830
852	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	831	static MGVTBL coro_state_vtbl = {
		832	0, 0, 0, 0,
		833	coro_state_clear,
		834	0,
		835	#ifdef MGf_DUP
		836	coro_state_dup,
		837	#else
		838	# define MGf_DUP 0
		839	#endif
		840	};
853		841
854	static struct coro *	842	static struct coro *
855	SvSTATE (SV *coro)	843	SvSTATE (SV *coro)
856	{	844	{
857	MAGIC *mg = SvMAGIC (SvROK (coro) ? SvRV (coro) : coro);	845	HV *stash;
		846	MAGIC *mg;
		847
		848	if (SvROK (coro))
		849	coro = SvRV (coro);
		850
		851	stash = SvSTASH (coro);
		852	if (stash != coro_stash && stash != coro_state_stash)
		853	{
		854	/* very slow, but rare, check */
		855	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		856	croak ("Coro::State object required");
		857	}
		858
		859	mg = SvMAGIC (coro);
858	assert (mg->mg_type == PERL_MAGIC_ext);	860	assert (mg->mg_type == PERL_MAGIC_ext);
859	return (struct coro *)mg->mg_ptr;	861	return (struct coro *)mg->mg_ptr;
860	}	862	}
861		863
862	static void	864	static void
		865	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		866	{
		867	ta->prev = SvSTATE (prev);
		868	ta->next = SvSTATE (next);
		869	ta->flags = flags;
		870	}
		871
		872	static void
863	api_transfer (pTHX_ SV prev, SV next, int flags)	873	api_transfer (SV prev, SV next, int flags)
864	{	874	{
865	SV_CORO (prev, "Coro::transfer");	875	dTHX;
866	SV_CORO (next, "Coro::transfer");	876	struct transfer_args ta;
867		877
868	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	878	prepare_transfer (&ta, prev, next, flags);
		879	TRANSFER (ta);
869	}	880	}
870		881
871	/ Coro ******************************************************************/	882	/ Coro ******************************************************************/
872		883
873	#define PRIO_MAX 3	884	#define PRIO_MAX 3
…		…
881	static GV coro_current, coro_idle;	892	static GV coro_current, coro_idle;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	893	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;	894	static int coro_nready;
884		895
885	static void	896	static void
886	coro_enq (pTHX_ SV *sv)	897	coro_enq (SV *sv)
887	{	898	{
888	int prio;	899	int prio;
889		900
890	if (SvTYPE (sv) != SVt_PVHV)	901	if (SvTYPE (sv) != SVt_PVHV)
891	croak ("Coro::ready tried to enqueue something that is not a coroutine");	902	croak ("Coro::ready tried to enqueue something that is not a coroutine");
892		903
893	{
894	SV *coro = sv;
895	SV_CORO (coro, "omg");
896	prio = SvSTATE (coro)->prio;	904	prio = SvSTATE (sv)->prio;
897	}
898		905
899	av_push (coro_ready [prio - PRIO_MIN], sv);	906	av_push (coro_ready [prio - PRIO_MIN], sv);
900	coro_nready++;	907	coro_nready++;
901	}	908	}
902		909
903	static SV *	910	static SV *
904	coro_deq (pTHX_ int min_prio)	911	coro_deq (int min_prio)
905	{	912	{
906	int prio = PRIO_MAX - PRIO_MIN;	913	int prio = PRIO_MAX - PRIO_MIN;
907		914
908	min_prio -= PRIO_MIN;	915	min_prio -= PRIO_MIN;
909	if (min_prio < 0)	916	if (min_prio < 0)
…		…
926		933
927	if (SvROK (coro))	934	if (SvROK (coro))
928	coro = SvRV (coro);	935	coro = SvRV (coro);
929		936
930	LOCK;	937	LOCK;
931	coro_enq (aTHX_ SvREFCNT_inc (coro));	938	coro_enq (SvREFCNT_inc (coro));
932	UNLOCK;	939	UNLOCK;
933	}	940	}
934		941
935	static void	942	static void
		943	prepare_schedule (struct transfer_args *ta)
		944	{
		945	SV current, prev, *next;
		946
		947	current = GvSV (coro_current);
		948
		949	for (;;)
		950	{
		951	LOCK;
		952	next = coro_deq (PRIO_MIN);
		953	UNLOCK;
		954
		955	if (next)
		956	break;
		957
		958	{
		959	dSP;
		960
		961	ENTER;
		962	SAVETMPS;
		963
		964	PUSHMARK (SP);
		965	PUTBACK;
		966	call_sv (GvSV (coro_idle), G_DISCARD);
		967
		968	FREETMPS;
		969	LEAVE;
		970	}
		971	}
		972
		973	prev = SvRV (current);
		974	SvRV (current) = next;
		975
		976	/* free this only after the transfer */
		977	LOCK;
		978	free_coro_mortal ();
		979	UNLOCK;
		980	coro_mortal = prev;
		981
		982	ta->prev = SvSTATE (prev);
		983	ta->next = SvSTATE (next);
		984	ta->flags = TRANSFER_SAVE_ALL;
		985	}
		986
		987	static void
		988	prepare_cede (struct transfer_args *ta)
		989	{
		990	LOCK;
		991	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		992	UNLOCK;
		993
		994	prepare_schedule (ta);
		995	}
		996
		997	static void
936	api_schedule (void)	998	api_schedule (void)
937	{	999	{
938	dTHX;	1000	dTHX;
		1001	struct transfer_args ta;
939		1002
940	SV prev, next;	1003	prepare_schedule (&ta);
941		1004	TRANSFER (ta);
942	LOCK;
943
944	prev = SvRV (GvSV (coro_current));
945	next = coro_deq (aTHX_ PRIO_MIN);
946
947	if (!next)
948	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
949
950	/* free this only after the transfer */
951	coro_mortal = prev;
952	SV_CORO (prev, "Coro::schedule");
953
954	SvRV (GvSV (coro_current)) = next;
955
956	SV_CORO (next, "Coro::schedule");
957
958	UNLOCK;
959
960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
962	}	1005	}
963		1006
964	static void	1007	static void
965	api_cede (void)	1008	api_cede (void)
966	{	1009	{
967	dTHX;	1010	dTHX;
		1011	struct transfer_args ta;
968		1012
969	LOCK;	1013	prepare_cede (&ta);
970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1014	TRANSFER (ta);
971	UNLOCK;
972
973	api_schedule ();
974	}	1015	}
975		1016
976	MODULE = Coro::State PACKAGE = Coro::State	1017	MODULE = Coro::State PACKAGE = Coro::State
977		1018
978	PROTOTYPES: DISABLE	1019	PROTOTYPES: DISABLE
979		1020
980	BOOT:	1021	BOOT:
981	{ /* {} necessary for stoopid perl-5.6.x */	1022	{
982	#ifdef USE_ITHREADS	1023	#ifdef USE_ITHREADS
983	MUTEX_INIT (&coro_mutex);	1024	MUTEX_INIT (&coro_mutex);
984	#endif	1025	#endif
985	BOOT_PAGESIZE;	1026	BOOT_PAGESIZE;
986		1027
987	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
988	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
989	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
990		1029
991	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
992	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
993	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1032	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
994	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
995		1033
996	main_mainstack = PL_mainstack;	1034	main_mainstack = PL_mainstack;
997		1035
998	coroapi.ver = CORO_API_VERSION;	1036	coroapi.ver = CORO_API_VERSION;
999	coroapi.transfer = api_transfer;	1037	coroapi.transfer = api_transfer;
…		…
1010	int i;	1048	int i;
1011		1049
1012	Newz (0, coro, 1, struct coro);	1050	Newz (0, coro, 1, struct coro);
1013	coro->args = newAV ();	1051	coro->args = newAV ();
1014		1052
1015	for (i = 1; i < items; i++)
1016	av_push (coro->args, newSVsv (ST (i)));
1017
1018	/coro->mainstack = 0; //actual work is done inside transfer /
1019	/coro->stack = 0;/
1020
1021	hv = newHV ();	1053	hv = newHV ();
1022	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1023	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1056
		1057	for (i = 1; i < items; i++)
		1058	av_push (coro->args, newSVsv (ST (i)));
		1059
		1060	/coro->mainstack = 0; //actual work is done inside transfer /
		1061	/coro->stack = 0;/
1024	}	1062	}
1025	OUTPUT:	1063	OUTPUT:
1026	RETVAL	1064	RETVAL
1027		1065
1028	void	1066	void
1029	transfer(prev, next, flags)	1067	_set_stacklevel (...)
1030	SV *prev	1068	ALIAS:
1031	SV *next	1069	Coro::State::transfer = 1
1032	int flags	1070	Coro::schedule = 2
		1071	Coro::cede = 3
		1072	Coro::Cont::yield = 4
1033	CODE:	1073	CODE:
1034	PUTBACK;
1035	SV_CORO (next, "Coro::transfer");
1036	SV_CORO (prev, "Coro::transfer");
1037	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1038	SPAGAIN;
1039
1040	int
1041	prio (Coro::State coro, int newprio = 0)
1042	ALIAS:
1043	nice = 1
1044	CODE:
1045	{	1074	{
1046	RETVAL = coro->prio;	1075	struct transfer_args ta;
1047		1076
1048	if (items > 1)	1077	switch (ix)
1049	{	1078	{
		1079	case 0:
		1080	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1081	ta.next = 0;
		1082	ta.flags = TRANSFER_SET_STACKLEVEL;
		1083	break;
		1084
		1085	case 1:
1050	if (ix)	1086	if (items != 3)
1051	newprio += coro->prio;	1087	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1052		1088
1053	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1089	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1054	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1090	break;
1055		1091
1056	coro->prio = newprio;	1092	case 2:
		1093	prepare_schedule (&ta);
		1094	break;
		1095
		1096	case 3:
		1097	prepare_cede (&ta);
		1098	break;
		1099
		1100	case 4:
		1101	{
		1102	SV *yieldstack;
		1103	SV *sv;
		1104	AV *defav = GvAV (PL_defgv);
		1105
		1106	yieldstack = *hv_fetch (
		1107	(HV *)SvRV (GvSV (coro_current)),
		1108	"yieldstack", sizeof ("yieldstack") - 1,
		1109	0
		1110	);
		1111
		1112	/* set up @_ -- ugly */
		1113	av_clear (defav);
		1114	av_fill (defav, items - 1);
		1115	while (items--)
		1116	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1117
		1118	sv = av_pop ((AV *)SvRV (yieldstack));
		1119	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1120	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1121	ta.flags = 0;
		1122	SvREFCNT_dec (sv);
		1123	}
		1124	break;
		1125
1057	}	1126	}
		1127
		1128	TRANSFER (ta);
1058	}	1129	}
1059		1130
1060	void	1131	void
1061	_clone_state_from (SV dst, SV src)	1132	_clone_state_from (SV dst, SV src)
1062	CODE:	1133	CODE:
…		…
1074	int code	1145	int code
1075	PROTOTYPE: $	1146	PROTOTYPE: $
1076	CODE:	1147	CODE:
1077	_exit (code);	1148	_exit (code);
1078		1149
1079	MODULE = Coro::State PACKAGE = Coro::Cont
1080
1081	void
1082	yield (...)
1083	PROTOTYPE: @
1084	CODE:
1085	SV *yieldstack;
1086	SV *sv;
1087	AV *defav = GvAV (PL_defgv);
1088	struct coro prev, next;
1089
1090	yieldstack = *hv_fetch (
1091	(HV *)SvRV (GvSV (coro_current)),
1092	"yieldstack", sizeof ("yieldstack") - 1,
1093	0
1094	);
1095
1096	/* set up @_ -- ugly */
1097	av_clear (defav);
1098	av_fill (defav, items - 1);
1099	while (items--)
1100	av_store (defav, items, SvREFCNT_inc (ST(items)));
1101
1102	sv = av_pop ((AV *)SvRV (yieldstack));
1103	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1104	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1105	SvREFCNT_dec (sv);
1106
1107	coro_state_transfer (aTHX_ prev, next, 0);
1108
1109	MODULE = Coro::State PACKAGE = Coro	1150	MODULE = Coro::State PACKAGE = Coro
1110		1151
1111	BOOT:	1152	BOOT:
1112	{	1153	{
1113	int i;	1154	int i;
		1155
1114	HV *stash = gv_stashpv ("Coro", TRUE);	1156	coro_stash = gv_stashpv ("Coro", TRUE);
1115		1157
1116	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1158	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1117	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1159	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1118	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1160	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1119	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1161	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1120	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1162	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1121	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1163	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1122		1164
1123	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1165	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1124	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1166	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1125		1167
1126	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1168	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1139	sv_setiv (sv, (IV)&coroapi);	1181	sv_setiv (sv, (IV)&coroapi);
1140	SvREADONLY_on (sv);	1182	SvREADONLY_on (sv);
1141	}	1183	}
1142	}	1184	}
1143		1185
1144	#if !PERL_MICRO	1186	int
		1187	prio (Coro::State coro, int newprio = 0)
		1188	ALIAS:
		1189	nice = 1
		1190	CODE:
		1191	{
		1192	RETVAL = coro->prio;
		1193
		1194	if (items > 1)
		1195	{
		1196	if (ix)
		1197	newprio += coro->prio;
		1198
		1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1201
		1202	coro->prio = newprio;
		1203	}
		1204	}
1145		1205
1146	void	1206	void
1147	ready (self)	1207	ready (SV *self)
1148	SV * self
1149	PROTOTYPE: $	1208	PROTOTYPE: $
1150	CODE:	1209	CODE:
1151	api_ready (self);	1210	api_ready (self);
1152
1153	#endif
1154		1211
1155	int	1212	int
1156	nready (...)	1213	nready (...)
1157	PROTOTYPE:	1214	PROTOTYPE:
1158	CODE:	1215	CODE:
1159	RETVAL = coro_nready;	1216	RETVAL = coro_nready;
1160	OUTPUT:	1217	OUTPUT:
1161	RETVAL	1218	RETVAL
1162		1219
1163	void	1220	MODULE = Coro::State PACKAGE = Coro::AIO
1164	schedule (...)
1165	PROTOTYPE:
1166	CODE:
1167	api_schedule ();
1168		1221
1169	void
1170	cede (...)
1171	PROTOTYPE:
1172	CODE:
1173	api_cede ();
1174
1175	# and these are hacks
1176	SV *	1222	SV *
1177	_aio_get_state ()	1223	_get_state ()
1178	CODE:	1224	CODE:
1179	{	1225	{
1180	struct {	1226	struct {
1181	int errorno;	1227	int errorno;
1182	int laststype;	1228	int laststype;
…		…
1193	}	1239	}
1194	OUTPUT:	1240	OUTPUT:
1195	RETVAL	1241	RETVAL
1196		1242
1197	void	1243	void
1198	_aio_set_state (char *data_)	1244	_set_state (char *data_)
1199	PROTOTYPE: $	1245	PROTOTYPE: $
1200	CODE:	1246	CODE:
1201	{	1247	{
1202	struct {	1248	struct {
1203	int errorno;	1249	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC vs. Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.87 by root, Fri Nov 24 13:40:36 2006 UTC vs.
Revision 1.102 by root, Mon Nov 27 01:28:03 2006 UTC