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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.86 by root, Fri Nov 24 11:36:57 2006 UTC vs.
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#define PERL_VERSION_ATLEAST(a,b,c) \
		10	(PERL_REVISION > (a) \
		11	\|\| (PERL_REVISION == (a) \
		12	&& (PERL_VERSION > (b) \
		13	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		14
		15	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	16	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	17	# define PL_ppaddr ppaddr
14	# endif	18	# endif
15	# ifndef call_sv	19	# ifndef call_sv
16	# define call_sv perl_call_sv	20	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	31	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	32	# define IS_PADCONST(v) 0
29	# endif	33	# endif
30	#endif	34	#endif
31		35
		36	#include <stdio.h>
32	#include <errno.h>	37	#include <errno.h>
33		38
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	39	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	40	# undef STACKGUARD
36	#endif	41	#endif
…		…
57	# else	62	# else
58	# define BOOT_PAGESIZE	63	# define BOOT_PAGESIZE
59	# endif	64	# endif
60	#endif	65	#endif
61		66
62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64
65	/* The next macro should declare a variable stacklevel that contains and approximation	67	/* The next macro should declare a variable stacklevel that contains and approximation
66	* to the current C stack pointer. Its property is that it changes with each call	68	* to the current C stack pointer. Its property is that it changes with each call
67	* and should be unique. */	69	* and should be unique. */
		70	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	71	#define STACKLEVEL ((void *)&stacklevel)
69		72
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	73	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		74
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	75	#if __GNUC__ >= 3
		76	# define attribute(x) __attribute__(x)
		77	#else
		78	# define attribute(x)
		79	#endif
		80
		81	#define NOINLINE attribute ((noinline))
73		82
74	#include "CoroAPI.h"	83	#include "CoroAPI.h"
		84
		85	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
75		86
76	#ifdef USE_ITHREADS	87	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	88	static perl_mutex coro_mutex;
78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	89	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	90	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
82	# define UNLOCK (void)0	93	# define UNLOCK (void)0
83	#endif	94	#endif
84		95
85	static struct CoroAPI coroapi;	96	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	97	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	98	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	99	static SV coro_mortal; / will be freed after next transfer */
91		100
92	/* this is actually not only the c stack but also c registers etc... */	101	/* this is a structure representing a c-level coroutine */
93	typedef struct {	102	typedef struct coro_stack {
94	int refcnt; /* pointer reference counter */	103	struct coro_stack *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		104
98	coro_context cctx;	105	/* the stack */
99
100	void *sptr;	106	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	107	long ssize; /* positive == mmap, otherwise malloc */
		108
		109	/* cpu state */
		110	void idle_sp; / sp of top-level transfer/schedule/cede call */
		111	JMPENV *top_env;
		112	coro_context cctx;
102	} coro_stack;	113	} coro_stack;
103		114
		115	/* this is a structure representing a perl-level coroutine */
104	struct coro {	116	struct coro {
105	/* the 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	/* data associated with this coroutine (initial args) */	163	/* coro process data */
151	AV *args;	164	int prio;
152	};	165	};
153		166
154	typedef struct coro *Coro__State;	167	typedef struct coro *Coro__State;
155	typedef struct coro *Coro__State_or_hashref;	168	typedef struct coro *Coro__State_or_hashref;
156		169
157	static AV *	170	static AV *
158	coro_clone_padlist (pTHX_ CV *cv)	171	coro_clone_padlist (CV *cv)
159	{	172	{
160	AV *padlist = CvPADLIST (cv);	173	AV *padlist = CvPADLIST (cv);
161	AV newpadlist, newpad;	174	AV newpadlist, newpad;
162		175
163	newpadlist = newAV ();	176	newpadlist = newAV ();
164	AvREAL_off (newpadlist);	177	AvREAL_off (newpadlist);
165	#if PERL_VERSION < 9	178	#if PERL_VERSION_ATLEAST (5,9,0)
		179	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		180	#else
166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	181	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
167	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
169	#endif	182	#endif
170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	183	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
171	--AvFILLp (padlist);	184	--AvFILLp (padlist);
172		185
173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	186	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
175		188
176	return newpadlist;	189	return newpadlist;
177	}	190	}
178		191
179	static void	192	static void
180	free_padlist (pTHX_ AV *padlist)	193	free_padlist (AV *padlist)
181	{	194	{
182	/* may be during global destruction */	195	/* may be during global destruction */
183	if (SvREFCNT (padlist))	196	if (SvREFCNT (padlist))
184	{	197	{
185	I32 i = AvFILLp (padlist);	198	I32 i = AvFILLp (padlist);
…		…
206	AV *padlist;	219	AV *padlist;
207	AV av = (AV )mg->mg_obj;	220	AV av = (AV )mg->mg_obj;
208		221
209	/* casting is fun. */	222	/* casting is fun. */
210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	223	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
211	free_padlist (aTHX_ padlist);	224	free_padlist (padlist);
212		225
213	SvREFCNT_dec (av);	226	SvREFCNT_dec (av);
214		227
215	return 0;	228	return 0;
216	}	229	}
…		…
219		232
220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	233	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
221		234
222	/* the next two functions merely cache the padlists */	235	/* the next two functions merely cache the padlists */
223	static void	236	static void
224	get_padlist (pTHX_ CV *cv)	237	get_padlist (CV *cv)
225	{	238	{
226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	239	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
227		240
228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	241	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	242	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
230	else	243	else
231	{	244	{
232	#if 0	245	#if 0
233	/* this should work - but it doesn't :( */	246	/* this is probably cleaner, but also slower? */
234	CV *cp = Perl_cv_clone (aTHX_ cv);	247	CV *cp = Perl_cv_clone (cv);
235	CvPADLIST (cv) = CvPADLIST (cp);	248	CvPADLIST (cv) = CvPADLIST (cp);
236	CvPADLIST (cp) = 0;	249	CvPADLIST (cp) = 0;
237	SvREFCNT_dec (cp);	250	SvREFCNT_dec (cp);
238	#else	251	#else
239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	252	CvPADLIST (cv) = coro_clone_padlist (cv);
240	#endif	253	#endif
241	}	254	}
242	}	255	}
243		256
244	static void	257	static void
245	put_padlist (pTHX_ CV *cv)	258	put_padlist (CV *cv)
246	{	259	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	260	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
248		261
249	if (!mg)	262	if (!mg)
250	{	263	{
…		…
258	}	271	}
259		272
260	#define SB do {	273	#define SB do {
261	#define SE } while (0)	274	#define SE } while (0)
262		275
263	#define LOAD(state) load_state(aTHX_ (state));	276	#define LOAD(state) load_state((state));
264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	277	#define SAVE(state,flags) save_state((state),(flags));
265		278
266	#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
267		280
268	static void	281	static void
269	load_state(pTHX_ Coro__State c)	282	load_state(Coro__State c)
270	{	283	{
271	PL_dowarn = c->dowarn;	284	PL_dowarn = c->dowarn;
272	PL_in_eval = c->in_eval;	285	PL_in_eval = c->in_eval;
273		286
274	PL_curstackinfo = c->curstackinfo;	287	PL_curstackinfo = c->curstackinfo;
…		…
292	PL_scopestack_ix = c->scopestack_ix;	305	PL_scopestack_ix = c->scopestack_ix;
293	PL_scopestack_max = c->scopestack_max;	306	PL_scopestack_max = c->scopestack_max;
294	PL_savestack = c->savestack;	307	PL_savestack = c->savestack;
295	PL_savestack_ix = c->savestack_ix;	308	PL_savestack_ix = c->savestack_ix;
296	PL_savestack_max = c->savestack_max;	309	PL_savestack_max = c->savestack_max;
297	#if PERL_VERSION < 9	310	#if !PERL_VERSION_ATLEAST (5,9,0)
298	PL_retstack = c->retstack;	311	PL_retstack = c->retstack;
299	PL_retstack_ix = c->retstack_ix;	312	PL_retstack_ix = c->retstack_ix;
300	PL_retstack_max = c->retstack_max;	313	PL_retstack_max = c->retstack_max;
301	#endif	314	#endif
302	PL_curpm = c->curpm;	315	PL_curpm = c->curpm;
303	PL_curcop = c->curcop;	316	PL_curcop = c->curcop;
304	PL_top_env = c->top_env;
305		317
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
309		321
…		…
316	{	328	{
317	AV padlist = (AV )POPs;	329	AV padlist = (AV )POPs;
318		330
319	if (padlist)	331	if (padlist)
320	{	332	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	333	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	334	CvPADLIST(cv) = padlist;
323	}	335	}
324		336
325	++CvDEPTH(cv);	337	++CvDEPTH(cv);
326	}	338	}
…		…
328	PUTBACK;	340	PUTBACK;
329	}	341	}
330	}	342	}
331		343
332	static void	344	static void
333	save_state(pTHX_ Coro__State c, int flags)	345	save_state(Coro__State c, int flags)
334	{	346	{
335	{	347	{
336	dSP;	348	dSP;
337	I32 cxix = cxstack_ix;	349	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	350	PERL_CONTEXT *ccstk = cxstack;
…		…
366	}	378	}
367		379
368	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST(cv));
369	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
370		382
371	get_padlist (aTHX_ cv);	383	get_padlist (cv);
372	}	384	}
373	}	385	}
374	#ifdef CXt_FORMAT	386	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)	387	else if (CxTYPE(cx) == CXt_FORMAT)
376	{	388	{
…		…
420	c->scopestack_ix = PL_scopestack_ix;	432	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;	433	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;	434	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;	435	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;	436	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9	437	#if !PERL_VERSION_ATLEAST (5,9,0)
426	c->retstack = PL_retstack;	438	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;	439	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;	440	c->retstack_max = PL_retstack_max;
429	#endif	441	#endif
430	c->curpm = PL_curpm;	442	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;	443	c->curcop = PL_curcop;
432	c->top_env = PL_top_env;
433	}	444	}
434		445
435	/*	446	/*
436	* allocate various perl stacks. This is an exact copy	447	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	448	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	449	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	450	* not usually need a lot of stackspace.
440	*/	451	*/
441	static void	452	static void
442	coro_init_stacks (pTHX)	453	coro_init_stacks ()
443	{	454	{
444	LOCK;
445
446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
447	PL_curstackinfo->si_type = PERLSI_MAIN;	456	PL_curstackinfo->si_type = PERLSI_MAIN;
448	PL_curstack = PL_curstackinfo->si_stack;	457	PL_curstack = PL_curstackinfo->si_stack;
449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
450		459
…		…
471		480
472	New(54,PL_savestack,96,ANY);	481	New(54,PL_savestack,96,ANY);
473	PL_savestack_ix = 0;	482	PL_savestack_ix = 0;
474	PL_savestack_max = 96;	483	PL_savestack_max = 96;
475		484
476	#if PERL_VERSION < 9	485	#if !PERL_VERSION_ATLEAST (5,9,0)
477	New(54,PL_retstack,8,OP*);	486	New(54,PL_retstack,8,OP*);
478	PL_retstack_ix = 0;	487	PL_retstack_ix = 0;
479	PL_retstack_max = 8;	488	PL_retstack_max = 8;
480	#endif	489	#endif
481
482	UNLOCK;
483	}	490	}
484		491
485	/*	492	/*
486	* destroy the stacks, the callchain etc...	493	* destroy the stacks, the callchain etc...
487	*/	494	*/
488	static void	495	static void
489	destroy_stacks(pTHX)	496	coro_destroy_stacks()
490	{	497	{
491	if (!IN_DESTRUCT)	498	if (!IN_DESTRUCT)
492	{	499	{
493	/* is this ugly, I ask? */	500	/* is this ugly, I ask? */
494	LEAVE_SCOPE (0);	501	LEAVE_SCOPE (0);
…		…
525		532
526	Safefree (PL_tmps_stack);	533	Safefree (PL_tmps_stack);
527	Safefree (PL_markstack);	534	Safefree (PL_markstack);
528	Safefree (PL_scopestack);	535	Safefree (PL_scopestack);
529	Safefree (PL_savestack);	536	Safefree (PL_savestack);
530	#if PERL_VERSION < 9	537	#if !PERL_VERSION_ATLEAST (5,9,0)
531	Safefree (PL_retstack);	538	Safefree (PL_retstack);
532	#endif	539	#endif
533	}	540	}
534		541
535	static void	542	static void
536	allocate_stack (Coro__State ctx, int alloc)	543	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	{	544	{
598	/*	545	/*
599	* emulate part of the perl startup here.	546	* emulate part of the perl startup here.
600	*/	547	*/
601	dTHX;
602	dSP;
603	Coro__State ctx = (Coro__State)arg;
604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
605		548
606	coro_init_stacks (aTHX);	549	coro_init_stacks ();
		550
607	/PL_curcop = 0;/	551	PL_curcop = 0;
608	/PL_in_eval = PL_in_eval;/ /* inherit */	552	PL_in_eval = 0;
		553	PL_curpm = 0;
		554
		555	{
		556	dSP;
		557	LOGOP myop;
		558
		559	/* I have no idea why this is needed, but it is */
		560	PUSHMARK (SP);
		561
609	SvREFCNT_dec (GvAV (PL_defgv));	562	SvREFCNT_dec (GvAV (PL_defgv));
610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	563	GvAV (PL_defgv) = coro->args; coro->args = 0;
611		564
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);	565	Zero (&myop, 1, LOGOP);
632	myop.op_next = Nullop;	566	myop.op_next = Nullop;
633	myop.op_flags = OPf_WANT_VOID;	567	myop.op_flags = OPf_WANT_VOID;
634		568
635	PL_op = (OP *)&myop;	569	PL_op = (OP *)&myop;
636		570
637	PUSHMARK(SP);	571	PUSHMARK (SP);
638	XPUSHs (sub_init);	572	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;	573	PUTBACK;
647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
648	SPAGAIN;	575	SPAGAIN;
649		576
650	ENTER; /* necessary e.g. for dounwind */	577	ENTER; /* necessary e.g. for dounwind */
651	}	578	}
652	}	579	}
653		580
654	static void	581	static void
655	continue_coro (void *arg)	582	free_coro_mortal ()
656	{	583	{
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)	584	if (coro_mortal)
770	{	585	{
771	SvREFCNT_dec (coro_mortal);	586	SvREFCNT_dec (coro_mortal);
772	coro_mortal = 0;	587	coro_mortal = 0;
773	}	588	}
		589	}
		590
		591	static void NOINLINE
		592	prepare_cctx (coro_stack *cctx)
		593	{
		594	dSP;
		595	LOGOP myop;
		596
		597	Zero (&myop, 1, LOGOP);
		598	myop.op_next = PL_op;
		599	myop.op_flags = OPf_WANT_VOID;
		600
		601	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
		602
		603	PUSHMARK (SP);
		604	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
		605	PUTBACK;
		606	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		607	SPAGAIN;
		608	}
		609
		610	static void
		611	coro_run (void *arg)
		612	{
		613	/* coro_run is the alternative epilogue of transfer() */
774	UNLOCK;	614	UNLOCK;
775	}
776		615
777	/* use this function pointer to call the above function */	616	/*
778	/* this is done to increase chances of the compiler not inlining the call */	617	* this is a _very_ stripped down perl interpreter ;)
779	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	618	*/
		619	PL_top_env = &PL_start_env;
		620	/* inject call to cctx_init */
		621	prepare_cctx ((coro_stack *)arg);
780		622
781	#define SV_CORO(sv,func) \	623	/* somebody will hit me for both perl_run and PL_restartop */
782	do { \	624	perl_run (PL_curinterp);
783	if (SvROK (sv)) \
784	sv = SvRV (sv); \
785	\
786	if (SvTYPE (sv) == SVt_PVHV) \
787	{ \
788	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
789	\
790	if (!he) \
791	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
792	\
793	(sv) = SvRV (HeVAL(he)); \
794	} \
795	\
796	/* must also be changed inside Coro::Cont::yield */ \
797	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
798	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
799	\
800	} while(0)
801		625
802	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))	626	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
		627	abort ();
		628	}
803		629
		630	static coro_stack *
		631	stack_new ()
		632	{
		633	coro_stack *stack;
		634
		635	New (0, stack, 1, coro_stack);
		636
		637	#if HAVE_MMAP
		638
		639	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		640	/* mmap suppsedly does allocate-on-write for us */
		641	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		642
		643	if (stack->sptr == (void *)-1)
		644	{
		645	perror ("FATAL: unable to mmap stack for coroutine");
		646	_exit (EXIT_FAILURE);
		647	}
		648
		649	# if STACKGUARD
		650	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		651	# endif
		652
		653	#else
		654
		655	stack->ssize = STACKSIZE * (long)sizeof (long);
		656	New (0, stack->sptr, STACKSIZE, long);
		657
		658	if (!stack->sptr)
		659	{
		660	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		661	_exit (EXIT_FAILURE);
		662	}
		663
		664	#endif
		665
		666	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		667
		668	return stack;
		669	}
		670
		671	static void
		672	stack_free (coro_stack *stack)
		673	{
		674	if (!stack)
		675	return;
		676
		677	#if HAVE_MMAP
		678	munmap (stack->sptr, stack->ssize);
		679	#else
		680	Safefree (stack->sptr);
		681	#endif
		682
		683	Safefree (stack);
		684	}
		685
		686	static coro_stack *stack_first;
		687	static int cctx_count, cctx_idle;
		688
		689	static coro_stack *
		690	stack_get ()
		691	{
		692	coro_stack *stack;
		693
		694	if (stack_first)
		695	{
		696	--cctx_idle;
		697	stack = stack_first;
		698	stack_first = stack->next;
		699	}
		700	else
		701	{
		702	++cctx_count;
		703	stack = stack_new ();
		704	PL_op = PL_op->op_next;
		705	}
		706
		707	return stack;
		708	}
		709
		710	static void
		711	stack_put (coro_stack *stack)
		712	{
		713	++cctx_idle;
		714	stack->next = stack_first;
		715	stack_first = stack;
		716	}
		717
		718	/* never call directly, always through the coro_state_transfer global variable */
		719	static void NOINLINE
		720	transfer (struct coro prev, struct coro next, int flags)
		721	{
		722	dSTACKLEVEL;
		723
		724	/* sometimes transfer is only called to set idle_sp */
		725	if (flags == TRANSFER_SET_STACKLEVEL)
		726	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		727	else if (prev != next)
		728	{
		729	coro_stack *prev__stack;
		730
		731	LOCK;
		732
		733	if (next->mainstack)
		734	{
		735	/* coroutine already started */
		736	SAVE (prev, flags);
		737	LOAD (next);
		738	}
		739	else
		740	{
		741	/* need to start coroutine */
		742	/* first get rid of the old state */
		743	SAVE (prev, -1);
		744	/* setup coroutine call */
		745	setup_coro (next);
		746	/* need a stack */
		747	next->stack = 0;
		748	}
		749
		750	if (!prev->stack)
		751	/* create a new empty context */
		752	Newz (0, prev->stack, 1, coro_stack);
		753
		754	prev__stack = prev->stack;
		755
		756	/* possibly "free" the stack */
		757	if (prev__stack->idle_sp == STACKLEVEL)
		758	{
		759	stack_put (prev__stack);
		760	prev->stack = 0;
		761	}
		762
		763	if (!next->stack)
		764	next->stack = stack_get ();
		765
		766	if (prev__stack != next->stack)
		767	{
		768	prev__stack->top_env = PL_top_env;
		769	PL_top_env = next->stack->top_env;
		770	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		771	}
		772
		773	free_coro_mortal ();
		774
		775	UNLOCK;
		776	}
		777	}
		778
		779	struct transfer_args
		780	{
		781	struct coro prev, next;
		782	int flags;
		783	};
		784
		785	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
		786
		787	static void
		788	coro_state_destroy (struct coro *coro)
		789	{
		790	if (coro->refcnt--)
		791	return;
		792
		793	if (coro->mainstack && coro->mainstack != main_mainstack)
		794	{
		795	struct coro temp;
		796
		797	SAVE ((&temp), TRANSFER_SAVE_ALL);
		798	LOAD (coro);
		799
		800	coro_destroy_stacks ();
		801
		802	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		803
		804	coro->mainstack = 0;
		805	}
		806
		807	stack_free (coro->stack);
		808	SvREFCNT_dec (coro->args);
		809	Safefree (coro);
		810	}
		811
804	static void	812	static int
		813	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		814	{
		815	struct coro coro = (struct coro )mg->mg_ptr;
		816	mg->mg_ptr = 0;
		817
		818	coro_state_destroy (coro);
		819
		820	return 0;
		821	}
		822
		823	static int
		824	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		825	{
		826	struct coro coro = (struct coro )mg->mg_ptr;
		827
		828	++coro->refcnt;
		829
		830	return 0;
		831	}
		832
		833	static MGVTBL coro_state_vtbl = {
		834	0, 0, 0, 0,
		835	coro_state_clear,
		836	0,
		837	#ifdef MGf_DUP
		838	coro_state_dup,
		839	#else
		840	# define MGf_DUP 0
		841	#endif
		842	};
		843
		844	static struct coro *
		845	SvSTATE (SV *coro)
		846	{
		847	HV *stash;
		848	MAGIC *mg;
		849
		850	if (SvROK (coro))
		851	coro = SvRV (coro);
		852
		853	stash = SvSTASH (coro);
		854	if (stash != coro_stash && stash != coro_state_stash)
		855	{
		856	/* very slow, but rare, check */
		857	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		858	croak ("Coro::State object required");
		859	}
		860
		861	mg = SvMAGIC (coro);
		862	assert (mg->mg_type == PERL_MAGIC_ext);
		863	return (struct coro *)mg->mg_ptr;
		864	}
		865
		866	static void
		867	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		868	{
		869	ta->prev = SvSTATE (prev);
		870	ta->next = SvSTATE (next);
		871	ta->flags = flags;
		872	}
		873
		874	static void
805	api_transfer (pTHX_ SV prev, SV next, int flags)	875	api_transfer (SV prev, SV next, int flags)
806	{	876	{
807	SV_CORO (prev, "Coro::transfer");	877	dTHX;
808	SV_CORO (next, "Coro::transfer");	878	struct transfer_args ta;
809		879
810	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	880	prepare_transfer (&ta, prev, next, flags);
		881	TRANSFER (ta);
811	}	882	}
812		883
813	/ Coro ******************************************************************/	884	/ Coro ******************************************************************/
814		885
815	#define PRIO_MAX 3	886	#define PRIO_MAX 3
…		…
823	static GV coro_current, coro_idle;	894	static GV coro_current, coro_idle;
824	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
825	static int coro_nready;	896	static int coro_nready;
826		897
827	static void	898	static void
828	coro_enq (pTHX_ SV *sv)	899	coro_enq (SV *sv)
829	{	900	{
830	SV **xprio;
831	int prio;	901	int prio;
832		902
833	if (SvTYPE (sv) != SVt_PVHV)	903	if (SvTYPE (sv) != SVt_PVHV)
834	croak ("Coro::ready tried to enqueue something that is not a coroutine");	904	croak ("Coro::ready tried to enqueue something that is not a coroutine");
835		905
836	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	906	prio = SvSTATE (sv)->prio;
837	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
838
839	prio = prio > PRIO_MAX ? PRIO_MAX
840	: prio < PRIO_MIN ? PRIO_MIN
841	: prio;
842		907
843	av_push (coro_ready [prio - PRIO_MIN], sv);	908	av_push (coro_ready [prio - PRIO_MIN], sv);
844	coro_nready++;	909	coro_nready++;
845	}	910	}
846		911
847	static SV *	912	static SV *
848	coro_deq (pTHX_ int min_prio)	913	coro_deq (int min_prio)
849	{	914	{
850	int prio = PRIO_MAX - PRIO_MIN;	915	int prio = PRIO_MAX - PRIO_MIN;
851		916
852	min_prio -= PRIO_MIN;	917	min_prio -= PRIO_MIN;
853	if (min_prio < 0)	918	if (min_prio < 0)
…		…
870		935
871	if (SvROK (coro))	936	if (SvROK (coro))
872	coro = SvRV (coro);	937	coro = SvRV (coro);
873		938
874	LOCK;	939	LOCK;
875	coro_enq (aTHX_ SvREFCNT_inc (coro));	940	coro_enq (SvREFCNT_inc (coro));
876	UNLOCK;	941	UNLOCK;
877	}	942	}
878		943
879	static void	944	static void
		945	prepare_schedule (struct transfer_args *ta)
		946	{
		947	SV current, prev, *next;
		948
		949	current = GvSV (coro_current);
		950
		951	for (;;)
		952	{
		953	LOCK;
		954	next = coro_deq (PRIO_MIN);
		955	UNLOCK;
		956
		957	if (next)
		958	break;
		959
		960	{
		961	dSP;
		962
		963	ENTER;
		964	SAVETMPS;
		965
		966	PUSHMARK (SP);
		967	PUTBACK;
		968	call_sv (GvSV (coro_idle), G_DISCARD);
		969
		970	FREETMPS;
		971	LEAVE;
		972	}
		973	}
		974
		975	prev = SvRV (current);
		976	SvRV (current) = next;
		977
		978	/* free this only after the transfer */
		979	LOCK;
		980	free_coro_mortal ();
		981	UNLOCK;
		982	coro_mortal = prev;
		983
		984	ta->prev = SvSTATE (prev);
		985	ta->next = SvSTATE (next);
		986	ta->flags = TRANSFER_SAVE_ALL;
		987	}
		988
		989	static void
		990	prepare_cede (struct transfer_args *ta)
		991	{
		992	LOCK;
		993	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		994	UNLOCK;
		995
		996	prepare_schedule (ta);
		997	}
		998
		999	static void
880	api_schedule (void)	1000	api_schedule (void)
881	{	1001	{
882	dTHX;	1002	dTHX;
		1003	struct transfer_args ta;
883		1004
884	SV prev, next;	1005	prepare_schedule (&ta);
885		1006	TRANSFER (ta);
886	LOCK;
887
888	prev = SvRV (GvSV (coro_current));
889	next = coro_deq (aTHX_ PRIO_MIN);
890
891	if (!next)
892	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
893
894	/* free this only after the transfer */
895	coro_mortal = prev;
896	SV_CORO (prev, "Coro::schedule");
897
898	SvRV (GvSV (coro_current)) = next;
899
900	SV_CORO (next, "Coro::schedule");
901
902	UNLOCK;
903
904	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
905	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
906	}	1007	}
907		1008
908	static void	1009	static void
909	api_cede (void)	1010	api_cede (void)
910	{	1011	{
911	dTHX;	1012	dTHX;
		1013	struct transfer_args ta;
912		1014
913	LOCK;	1015	prepare_cede (&ta);
914	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1016	TRANSFER (ta);
915	UNLOCK;
916
917	api_schedule ();
918	}	1017	}
919		1018
920	MODULE = Coro::State PACKAGE = Coro::State	1019	MODULE = Coro::State PACKAGE = Coro::State
921		1020
922	PROTOTYPES: ENABLE	1021	PROTOTYPES: DISABLE
923		1022
924	BOOT:	1023	BOOT:
925	{ /* {} necessary for stoopid perl-5.6.x */	1024	{
926	#ifdef USE_ITHREADS	1025	#ifdef USE_ITHREADS
927	MUTEX_INIT (&coro_mutex);	1026	MUTEX_INIT (&coro_mutex);
928	#endif	1027	#endif
929	BOOT_PAGESIZE;	1028	BOOT_PAGESIZE;
930		1029
931	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
932	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
933	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1030	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
934		1031
935	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1032	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
936	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1033	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
937	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1034	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
938	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
939		1035
940	main_mainstack = PL_mainstack;	1036	main_mainstack = PL_mainstack;
941		1037
942	coroapi.ver = CORO_API_VERSION;	1038	coroapi.ver = CORO_API_VERSION;
943	coroapi.transfer = api_transfer;	1039	coroapi.transfer = api_transfer;
944	}
945		1040
946	Coro::State	1041	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		1042	}
		1043
		1044	SV *
947	new (char *klass, ...)	1045	new (char *klass, ...)
948	PROTOTYPE: $@
949	CODE:	1046	CODE:
950	{	1047	{
951	Coro__State coro;	1048	struct coro *coro;
		1049	HV *hv;
952	int i;	1050	int i;
953
954	if (!SvOK (ST (1)))
955	croak ("Coro::State::new needs something callable as first argument");
956		1051
957	Newz (0, coro, 1, struct coro);	1052	Newz (0, coro, 1, struct coro);
958	coro->args = newAV ();	1053	coro->args = newAV ();
959		1054
		1055	hv = newHV ();
		1056	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1057	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1058
960	for (i = 1; i < items; i++)	1059	for (i = 1; i < items; i++)
961	av_push (coro->args, newSVsv (ST (i)));	1060	av_push (coro->args, newSVsv (ST (i)));
962		1061
963	RETVAL = coro;
964
965	/coro->mainstack = 0; //actual work is done inside transfer /	1062	/coro->mainstack = 0; //actual work is done inside transfer /
966	/coro->stack = 0;/	1063	/coro->stack = 0;/
967	}	1064	}
968	OUTPUT:	1065	OUTPUT:
969	RETVAL	1066	RETVAL
970		1067
971	void	1068	void
972	transfer(prev, next, flags)	1069	_set_stacklevel (...)
973	SV *prev	1070	ALIAS:
974	SV *next	1071	Coro::State::transfer = 1
975	int flags	1072	Coro::schedule = 2
976	PROTOTYPE: @	1073	Coro::cede = 3
		1074	Coro::Cont::yield = 4
977	CODE:	1075	CODE:
978	PUTBACK;	1076	{
979	SV_CORO (next, "Coro::transfer");	1077	struct transfer_args ta;
980	SV_CORO (prev, "Coro::transfer");	1078
981	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1079	switch (ix)
982	SPAGAIN;	1080	{
		1081	case 0:
		1082	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1083	ta.next = 0;
		1084	ta.flags = TRANSFER_SET_STACKLEVEL;
		1085	break;
		1086
		1087	case 1:
		1088	if (items != 3)
		1089	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1090
		1091	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1092	break;
		1093
		1094	case 2:
		1095	prepare_schedule (&ta);
		1096	break;
		1097
		1098	case 3:
		1099	prepare_cede (&ta);
		1100	break;
		1101
		1102	case 4:
		1103	{
		1104	SV *yieldstack;
		1105	SV *sv;
		1106	AV *defav = GvAV (PL_defgv);
		1107
		1108	yieldstack = *hv_fetch (
		1109	(HV *)SvRV (GvSV (coro_current)),
		1110	"yieldstack", sizeof ("yieldstack") - 1,
		1111	0
		1112	);
		1113
		1114	/* set up @_ -- ugly */
		1115	av_clear (defav);
		1116	av_fill (defav, items - 1);
		1117	while (items--)
		1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1119
		1120	sv = av_pop ((AV *)SvRV (yieldstack));
		1121	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1122	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1123	ta.flags = 0;
		1124	SvREFCNT_dec (sv);
		1125	}
		1126	break;
		1127
		1128	}
		1129
		1130	TRANSFER (ta);
		1131	}
983		1132
984	void	1133	void
985	DESTROY(coro)	1134	_clone_state_from (SV dst, SV src)
986	Coro::State coro	1135	CODE:
987	CODE:	1136	{
		1137	struct coro *coro_src = SvSTATE (src);
988		1138
989	if (coro->mainstack && coro->mainstack != main_mainstack)	1139	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
990	{
991	struct coro temp;
992		1140
993	PUTBACK;	1141	++coro_src->refcnt;
994	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1142	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
995	LOAD (aTHX_ coro);	1143	}
996	SPAGAIN;
997
998	destroy_stacks (aTHX);
999
1000	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1001	SPAGAIN;
1002
1003	coro->mainstack = 0;
1004	}
1005
1006	deallocate_stack (coro);
1007	SvREFCNT_dec (coro->args);
1008	Safefree (coro);
1009		1144
1010	void	1145	void
1011	_exit(code)	1146	_exit (code)
1012	int code	1147	int code
1013	PROTOTYPE: $	1148	PROTOTYPE: $
1014	CODE:	1149	CODE:
1015	_exit (code);	1150	_exit (code);
1016		1151
1017	MODULE = Coro::State PACKAGE = Coro::Cont
1018
1019	void
1020	yield(...)
1021	PROTOTYPE: @
1022	CODE:
1023	SV *yieldstack;
1024	SV *sv;
1025	AV *defav = GvAV (PL_defgv);
1026	struct coro prev, next;
1027
1028	yieldstack = *hv_fetch (
1029	(HV *)SvRV (GvSV (coro_current)),
1030	"yieldstack", sizeof ("yieldstack") - 1,
1031	0
1032	);
1033
1034	/* set up @_ -- ugly */
1035	av_clear (defav);
1036	av_fill (defav, items - 1);
1037	while (items--)
1038	av_store (defav, items, SvREFCNT_inc (ST(items)));
1039
1040	sv = av_pop ((AV *)SvRV (yieldstack));
1041	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1042	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1043	SvREFCNT_dec (sv);
1044
1045	coro_state_transfer (aTHX_ prev, next, 0);
1046
1047	MODULE = Coro::State PACKAGE = Coro	1152	MODULE = Coro::State PACKAGE = Coro
1048		1153
1049	BOOT:	1154	BOOT:
1050	{	1155	{
1051	int i;	1156	int i;
		1157
1052	HV *stash = gv_stashpv ("Coro", TRUE);	1158	coro_stash = gv_stashpv ("Coro", TRUE);
1053		1159
1054	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1160	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1055	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1161	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1056	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1162	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1057	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1163	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1058	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1164	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1059	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1165	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1060		1166
1061	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1167	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1062	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1168	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1063		1169
1064	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1170	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1077	sv_setiv (sv, (IV)&coroapi);	1183	sv_setiv (sv, (IV)&coroapi);
1078	SvREADONLY_on (sv);	1184	SvREADONLY_on (sv);
1079	}	1185	}
1080	}	1186	}
1081		1187
1082	#if !PERL_MICRO	1188	int
		1189	prio (Coro::State coro, int newprio = 0)
		1190	ALIAS:
		1191	nice = 1
		1192	CODE:
		1193	{
		1194	RETVAL = coro->prio;
		1195
		1196	if (items > 1)
		1197	{
		1198	if (ix)
		1199	newprio += coro->prio;
		1200
		1201	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1202	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1203
		1204	coro->prio = newprio;
		1205	}
		1206	}
1083		1207
1084	void	1208	void
1085	ready(self)	1209	ready (SV *self)
1086	SV * self
1087	PROTOTYPE: $	1210	PROTOTYPE: $
1088	CODE:	1211	CODE:
1089	api_ready (self);	1212	api_ready (self);
1090		1213
1091	#endif
1092
1093	int	1214	int
1094	nready(...)	1215	nready (...)
1095	PROTOTYPE:	1216	PROTOTYPE:
1096	CODE:	1217	CODE:
1097	RETVAL = coro_nready;	1218	RETVAL = coro_nready;
1098	OUTPUT:	1219	OUTPUT:
1099	RETVAL	1220	RETVAL
1100		1221
1101	void	1222	MODULE = Coro::State PACKAGE = Coro::AIO
1102	schedule(...)
1103	PROTOTYPE:
1104	CODE:
1105	api_schedule ();
1106		1223
1107	void
1108	cede(...)
1109	PROTOTYPE:
1110	CODE:
1111	api_cede ();
1112
1113	# and these are hacks
1114	SV *	1224	SV *
1115	_aio_get_state ()	1225	_get_state ()
1116	CODE:	1226	CODE:
1117	{	1227	{
1118	struct {	1228	struct {
1119	int errorno;	1229	int errorno;
1120	int laststype;	1230	int laststype;
…		…
1131	}	1241	}
1132	OUTPUT:	1242	OUTPUT:
1133	RETVAL	1243	RETVAL
1134		1244
1135	void	1245	void
1136	_aio_set_state (char *data_)	1246	_set_state (char *data_)
1137	PROTOTYPE: $	1247	PROTOTYPE: $
1138	CODE:	1248	CODE:
1139	{	1249	{
1140	struct {	1250	struct {
1141	int errorno;	1251	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.86 by root, Fri Nov 24 11:36:57 2006 UTC vs. Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.86 by root, Fri Nov 24 11:36:57 2006 UTC vs.
Revision 1.103 by root, Mon Nov 27 01:33:30 2006 UTC