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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.84 by root, Fri Nov 24 00:31:21 2006 UTC vs.
Revision 1.104 by root, Mon Nov 27 01:51:02 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
…		…
57	# else	66	# else
58	# define BOOT_PAGESIZE	67	# define BOOT_PAGESIZE
59	# endif	68	# endif
60	#endif	69	#endif
61		70
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	71	/* 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	72	* to the current C stack pointer. Its property is that it changes with each call
67	* and should be unique. */	73	* and should be unique. */
		74	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	75	#define STACKLEVEL ((void *)&stacklevel)
69		76
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	77	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		78
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	79	#if __GNUC__ >= 3
		80	# define attribute(x) __attribute__(x)
		81	#else
		82	# define attribute(x)
		83	#endif
		84
		85	#define NOINLINE attribute ((noinline))
73		86
74	#include "CoroAPI.h"	87	#include "CoroAPI.h"
		88
		89	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
75		90
76	#ifdef USE_ITHREADS	91	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	92	static perl_mutex coro_mutex;
78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	93	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	94	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
82	# define UNLOCK (void)0	97	# define UNLOCK (void)0
83	#endif	98	#endif
84		99
85	static struct CoroAPI coroapi;	100	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	101	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	102	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 */	103	static SV coro_mortal; / will be freed after next transfer */
91		104
92	/* this is actually not only the c stack but also c registers etc... */	105	/* this is a structure representing a c-level coroutine */
93	typedef struct {	106	typedef struct coro_stack {
94	int refcnt; /* pointer reference counter */	107	struct coro_stack *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		108
98	coro_context cctx;	109	/* the stack */
99
100	void *sptr;	110	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	111	long ssize; /* positive == mmap, otherwise malloc */
		112
		113	/* cpu state */
		114	void idle_sp; / sp of top-level transfer/schedule/cede call */
		115	JMPENV *top_env;
		116	coro_context cctx;
		117
		118	#if USE_VALGRIND
		119	int valgrind_id;
		120	#endif
102	} coro_stack;	121	} coro_stack;
103		122
		123	/* this is a structure representing a perl-level coroutine */
104	struct coro {	124	struct coro {
105	/* the optional C context */	125	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	126	coro_stack *stack;
107	void *cursp;	127
		128	/* data associated with this coroutine (initial args) */
		129	AV *args;
108	int gencnt;	130	int refcnt;
109		131
110	/* optionally saved, might be zero */	132	/* optionally saved, might be zero */
111	AV *defav;	133	AV *defav;
112	SV *defsv;	134	SV *defsv;
113	SV *errsv;	135	SV *errsv;
…		…
143	OP **retstack;	165	OP **retstack;
144	I32 retstack_ix;	166	I32 retstack_ix;
145	I32 retstack_max;	167	I32 retstack_max;
146	PMOP *curpm;	168	PMOP *curpm;
147	COP *curcop;	169	COP *curcop;
148	JMPENV *top_env;
149		170
150	/* data associated with this coroutine (initial args) */	171	/* coro process data */
151	AV *args;	172	int prio;
152	};	173	};
153		174
154	typedef struct coro *Coro__State;	175	typedef struct coro *Coro__State;
155	typedef struct coro *Coro__State_or_hashref;	176	typedef struct coro *Coro__State_or_hashref;
156		177
157	static AV *	178	static AV *
158	coro_clone_padlist (pTHX_ CV *cv)	179	coro_clone_padlist (CV *cv)
159	{	180	{
160	AV *padlist = CvPADLIST (cv);	181	AV *padlist = CvPADLIST (cv);
161	AV newpadlist, newpad;	182	AV newpadlist, newpad;
162		183
163	newpadlist = newAV ();	184	newpadlist = newAV ();
164	AvREAL_off (newpadlist);	185	AvREAL_off (newpadlist);
165	#if PERL_VERSION < 9	186	#if PERL_VERSION_ATLEAST (5,9,0)
		187	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		188	#else
166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	189	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
167	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
169	#endif	190	#endif
170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	191	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
171	--AvFILLp (padlist);	192	--AvFILLp (padlist);
172		193
173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	194	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
175		196
176	return newpadlist;	197	return newpadlist;
177	}	198	}
178		199
179	static void	200	static void
180	free_padlist (pTHX_ AV *padlist)	201	free_padlist (AV *padlist)
181	{	202	{
182	/* may be during global destruction */	203	/* may be during global destruction */
183	if (SvREFCNT (padlist))	204	if (SvREFCNT (padlist))
184	{	205	{
185	I32 i = AvFILLp (padlist);	206	I32 i = AvFILLp (padlist);
…		…
206	AV *padlist;	227	AV *padlist;
207	AV av = (AV )mg->mg_obj;	228	AV av = (AV )mg->mg_obj;
208		229
209	/* casting is fun. */	230	/* casting is fun. */
210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	231	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
211	free_padlist (aTHX_ padlist);	232	free_padlist (padlist);
212		233
213	SvREFCNT_dec (av);	234	SvREFCNT_dec (av);
214		235
215	return 0;	236	return 0;
216	}	237	}
…		…
219		240
220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	241	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
221		242
222	/* the next two functions merely cache the padlists */	243	/* the next two functions merely cache the padlists */
223	static void	244	static void
224	get_padlist (pTHX_ CV *cv)	245	get_padlist (CV *cv)
225	{	246	{
226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
227		248
228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	249	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	250	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
230	else	251	else
231	{	252	{
232	#if 0	253	#if 0
233	/* this should work - but it doesn't :( */	254	/* this is probably cleaner, but also slower? */
234	CV *cp = Perl_cv_clone (aTHX_ cv);	255	CV *cp = Perl_cv_clone (cv);
235	CvPADLIST (cv) = CvPADLIST (cp);	256	CvPADLIST (cv) = CvPADLIST (cp);
236	CvPADLIST (cp) = 0;	257	CvPADLIST (cp) = 0;
237	SvREFCNT_dec (cp);	258	SvREFCNT_dec (cp);
238	#else	259	#else
239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	260	CvPADLIST (cv) = coro_clone_padlist (cv);
240	#endif	261	#endif
241	}	262	}
242	}	263	}
243		264
244	static void	265	static void
245	put_padlist (pTHX_ CV *cv)	266	put_padlist (CV *cv)
246	{	267	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	268	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
248		269
249	if (!mg)	270	if (!mg)
250	{	271	{
…		…
258	}	279	}
259		280
260	#define SB do {	281	#define SB do {
261	#define SE } while (0)	282	#define SE } while (0)
262		283
263	#define LOAD(state) load_state(aTHX_ (state));	284	#define LOAD(state) load_state((state));
264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	285	#define SAVE(state,flags) save_state((state),(flags));
265		286
266	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	287	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
267		288
268	static void	289	static void
269	load_state(pTHX_ Coro__State c)	290	load_state(Coro__State c)
270	{	291	{
271	PL_dowarn = c->dowarn;	292	PL_dowarn = c->dowarn;
272	PL_in_eval = c->in_eval;	293	PL_in_eval = c->in_eval;
273		294
274	PL_curstackinfo = c->curstackinfo;	295	PL_curstackinfo = c->curstackinfo;
…		…
292	PL_scopestack_ix = c->scopestack_ix;	313	PL_scopestack_ix = c->scopestack_ix;
293	PL_scopestack_max = c->scopestack_max;	314	PL_scopestack_max = c->scopestack_max;
294	PL_savestack = c->savestack;	315	PL_savestack = c->savestack;
295	PL_savestack_ix = c->savestack_ix;	316	PL_savestack_ix = c->savestack_ix;
296	PL_savestack_max = c->savestack_max;	317	PL_savestack_max = c->savestack_max;
297	#if PERL_VERSION < 9	318	#if !PERL_VERSION_ATLEAST (5,9,0)
298	PL_retstack = c->retstack;	319	PL_retstack = c->retstack;
299	PL_retstack_ix = c->retstack_ix;	320	PL_retstack_ix = c->retstack_ix;
300	PL_retstack_max = c->retstack_max;	321	PL_retstack_max = c->retstack_max;
301	#endif	322	#endif
302	PL_curpm = c->curpm;	323	PL_curpm = c->curpm;
303	PL_curcop = c->curcop;	324	PL_curcop = c->curcop;
304	PL_top_env = c->top_env;
305		325
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	326	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	327	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	328	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
309		329
…		…
316	{	336	{
317	AV padlist = (AV )POPs;	337	AV padlist = (AV )POPs;
318		338
319	if (padlist)	339	if (padlist)
320	{	340	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	341	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	342	CvPADLIST(cv) = padlist;
323	}	343	}
324		344
325	++CvDEPTH(cv);	345	++CvDEPTH(cv);
326	}	346	}
…		…
328	PUTBACK;	348	PUTBACK;
329	}	349	}
330	}	350	}
331		351
332	static void	352	static void
333	save_state(pTHX_ Coro__State c, int flags)	353	save_state(Coro__State c, int flags)
334	{	354	{
335	{	355	{
336	dSP;	356	dSP;
337	I32 cxix = cxstack_ix;	357	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	358	PERL_CONTEXT *ccstk = cxstack;
…		…
366	}	386	}
367		387
368	PUSHs ((SV *)CvPADLIST(cv));	388	PUSHs ((SV *)CvPADLIST(cv));
369	PUSHs ((SV *)cv);	389	PUSHs ((SV *)cv);
370		390
371	get_padlist (aTHX_ cv);	391	get_padlist (cv);
372	}	392	}
373	}	393	}
374	#ifdef CXt_FORMAT	394	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)	395	else if (CxTYPE(cx) == CXt_FORMAT)
376	{	396	{
…		…
420	c->scopestack_ix = PL_scopestack_ix;	440	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;	441	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;	442	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;	443	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;	444	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9	445	#if !PERL_VERSION_ATLEAST (5,9,0)
426	c->retstack = PL_retstack;	446	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;	447	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;	448	c->retstack_max = PL_retstack_max;
429	#endif	449	#endif
430	c->curpm = PL_curpm;	450	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;	451	c->curcop = PL_curcop;
432	c->top_env = PL_top_env;
433	}	452	}
434		453
435	/*	454	/*
436	* allocate various perl stacks. This is an exact copy	455	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	456	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	457	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	458	* not usually need a lot of stackspace.
440	*/	459	*/
441	static void	460	static void
442	coro_init_stacks (pTHX)	461	coro_init_stacks ()
443	{	462	{
444	LOCK;
445
446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	463	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
447	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
448	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
450		467
…		…
471		488
472	New(54,PL_savestack,96,ANY);	489	New(54,PL_savestack,96,ANY);
473	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
474	PL_savestack_max = 96;	491	PL_savestack_max = 96;
475		492
476	#if PERL_VERSION < 9	493	#if !PERL_VERSION_ATLEAST (5,9,0)
477	New(54,PL_retstack,8,OP*);	494	New(54,PL_retstack,8,OP*);
478	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
479	PL_retstack_max = 8;	496	PL_retstack_max = 8;
480	#endif	497	#endif
481
482	UNLOCK;
483	}	498	}
484		499
485	/*	500	/*
486	* destroy the stacks, the callchain etc...	501	* destroy the stacks, the callchain etc...
487	*/	502	*/
488	static void	503	static void
489	destroy_stacks(pTHX)	504	coro_destroy_stacks()
490	{	505	{
491	if (!IN_DESTRUCT)	506	if (!IN_DESTRUCT)
492	{	507	{
493	/* is this ugly, I ask? */	508	/* is this ugly, I ask? */
494	LEAVE_SCOPE (0);	509	LEAVE_SCOPE (0);
…		…
525		540
526	Safefree (PL_tmps_stack);	541	Safefree (PL_tmps_stack);
527	Safefree (PL_markstack);	542	Safefree (PL_markstack);
528	Safefree (PL_scopestack);	543	Safefree (PL_scopestack);
529	Safefree (PL_savestack);	544	Safefree (PL_savestack);
530	#if PERL_VERSION < 9	545	#if !PERL_VERSION_ATLEAST (5,9,0)
531	Safefree (PL_retstack);	546	Safefree (PL_retstack);
532	#endif	547	#endif
533	}	548	}
534		549
535	static void	550	static void
536	allocate_stack (Coro__State ctx, int alloc)	551	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	{	552	{
598	/*	553	/*
599	* emulate part of the perl startup here.	554	* emulate part of the perl startup here.
600	*/	555	*/
601	dTHX;
602	dSP;
603	Coro__State ctx = (Coro__State)arg;
604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
605		556
606	coro_init_stacks (aTHX);	557	coro_init_stacks ();
		558
607	/PL_curcop = 0;/	559	PL_curcop = 0;
608	/PL_in_eval = PL_in_eval;/ /* inherit */	560	PL_in_eval = 0;
		561	PL_curpm = 0;
		562
		563	{
		564	dSP;
		565	LOGOP myop;
		566
		567	/* I have no idea why this is needed, but it is */
		568	PUSHMARK (SP);
		569
609	SvREFCNT_dec (GvAV (PL_defgv));	570	SvREFCNT_dec (GvAV (PL_defgv));
610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	571	GvAV (PL_defgv) = coro->args; coro->args = 0;
611		572
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);	573	Zero (&myop, 1, LOGOP);
632	myop.op_next = Nullop;	574	myop.op_next = Nullop;
633	myop.op_flags = OPf_WANT_VOID;	575	myop.op_flags = OPf_WANT_VOID;
634		576
635	PL_op = (OP *)&myop;	577	PL_op = (OP *)&myop;
636		578
637	PUSHMARK(SP);	579	PUSHMARK (SP);
638	XPUSHs (sub_init);	580	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;	581	PUTBACK;
647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	582	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
648	SPAGAIN;	583	SPAGAIN;
649		584
650	ENTER; /* necessary e.g. for dounwind */	585	ENTER; /* necessary e.g. for dounwind */
651	}	586	}
652	}	587	}
653		588
654	static void	589	static void
655	continue_coro (void *arg)	590	free_coro_mortal ()
656	{	591	{
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)	592	if (coro_mortal)
770	{	593	{
771	SvREFCNT_dec (coro_mortal);	594	SvREFCNT_dec (coro_mortal);
772	coro_mortal = 0;	595	coro_mortal = 0;
773	}	596	}
		597	}
		598
		599	static void NOINLINE
		600	prepare_cctx (coro_stack *cctx)
		601	{
		602	dSP;
		603	LOGOP myop;
		604
		605	Zero (&myop, 1, LOGOP);
		606	myop.op_next = PL_op;
		607	myop.op_flags = OPf_WANT_VOID;
		608
		609	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
		610
		611	PUSHMARK (SP);
		612	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
		613	PUTBACK;
		614	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		615	SPAGAIN;
		616	}
		617
		618	static void
		619	coro_run (void *arg)
		620	{
		621	/* coro_run is the alternative epilogue of transfer() */
774	UNLOCK;	622	UNLOCK;
775	}
776		623
777	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	624	/*
		625	* this is a _very_ stripped down perl interpreter ;)
		626	*/
		627	PL_top_env = &PL_start_env;
		628	/* inject call to cctx_init */
		629	prepare_cctx ((coro_stack *)arg);
778		630
779	#define SV_CORO(sv,func) \	631	/* somebody will hit me for both perl_run and PL_restartop */
780	do { \	632	perl_run (PL_curinterp);
781	if (SvROK (sv)) \
782	sv = SvRV (sv); \
783	\
784	if (SvTYPE (sv) == SVt_PVHV) \
785	{ \
786	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
787	\
788	if (!he) \
789	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
790	\
791	(sv) = SvRV (HeVAL(he)); \
792	} \
793	\
794	/* must also be changed inside Coro::Cont::yield */ \
795	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
796	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
797	\
798	} while(0)
799		633
800	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))	634	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
		635	abort ();
		636	}
801		637
		638	static coro_stack *
		639	stack_new ()
		640	{
		641	coro_stack *stack;
		642
		643	New (0, stack, 1, coro_stack);
		644
		645	#if HAVE_MMAP
		646
		647	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		648	/* mmap suppsedly does allocate-on-write for us */
		649	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		650
		651	if (stack->sptr == (void *)-1)
		652	{
		653	perror ("FATAL: unable to mmap stack for coroutine");
		654	_exit (EXIT_FAILURE);
		655	}
		656
		657	# if STACKGUARD
		658	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		659	# endif
		660
		661	#else
		662
		663	stack->ssize = STACKSIZE * (long)sizeof (long);
		664	New (0, stack->sptr, STACKSIZE, long);
		665
		666	if (!stack->sptr)
		667	{
		668	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		669	_exit (EXIT_FAILURE);
		670	}
		671
		672	#endif
		673
		674	#if USE_VALGRIND
		675	stack->valgrind_id = VALGRIND_STACK_REGISTER (
		676	STACKGUARD * PAGESIZE + (char *)stack->sptr,
		677	stack->ssize + (char *)stack->sptr
		678	);
		679	#endif
		680
		681	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		682
		683	return stack;
		684	}
		685
		686	static void
		687	stack_free (coro_stack *stack)
		688	{
		689	if (!stack)
		690	return;
		691
		692	#if USE_VALGRIND
		693	VALGRIND_STACK_DEREGISTER (stack->valgrind_id);
		694	#endif
		695
		696	#if HAVE_MMAP
		697	munmap (stack->sptr, stack->ssize);
		698	#else
		699	Safefree (stack->sptr);
		700	#endif
		701
		702	Safefree (stack);
		703	}
		704
		705	static coro_stack *stack_first;
		706	static int cctx_count, cctx_idle;
		707
		708	static coro_stack *
		709	stack_get ()
		710	{
		711	coro_stack *stack;
		712
		713	if (stack_first)
		714	{
		715	--cctx_idle;
		716	stack = stack_first;
		717	stack_first = stack->next;
		718	}
		719	else
		720	{
		721	++cctx_count;
		722	stack = stack_new ();
		723	PL_op = PL_op->op_next;
		724	}
		725
		726	return stack;
		727	}
		728
		729	static void
		730	stack_put (coro_stack *stack)
		731	{
		732	++cctx_idle;
		733	stack->next = stack_first;
		734	stack_first = stack;
		735	}
		736
		737	/* never call directly, always through the coro_state_transfer global variable */
		738	static void NOINLINE
		739	transfer (struct coro prev, struct coro next, int flags)
		740	{
		741	dSTACKLEVEL;
		742
		743	/* sometimes transfer is only called to set idle_sp */
		744	if (flags == TRANSFER_SET_STACKLEVEL)
		745	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		746	else if (prev != next)
		747	{
		748	coro_stack *prev__stack;
		749
		750	LOCK;
		751
		752	if (next->mainstack)
		753	{
		754	/* coroutine already started */
		755	SAVE (prev, flags);
		756	LOAD (next);
		757	}
		758	else
		759	{
		760	/* need to start coroutine */
		761	/* first get rid of the old state */
		762	SAVE (prev, -1);
		763	/* setup coroutine call */
		764	setup_coro (next);
		765	/* need a stack */
		766	next->stack = 0;
		767	}
		768
		769	if (!prev->stack)
		770	/* create a new empty context */
		771	Newz (0, prev->stack, 1, coro_stack);
		772
		773	prev__stack = prev->stack;
		774
		775	/* possibly "free" the stack */
		776	if (prev__stack->idle_sp == STACKLEVEL)
		777	{
		778	stack_put (prev__stack);
		779	prev->stack = 0;
		780	}
		781
		782	if (!next->stack)
		783	next->stack = stack_get ();
		784
		785	if (prev__stack != next->stack)
		786	{
		787	prev__stack->top_env = PL_top_env;
		788	PL_top_env = next->stack->top_env;
		789	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		790	}
		791
		792	free_coro_mortal ();
		793
		794	UNLOCK;
		795	}
		796	}
		797
		798	struct transfer_args
		799	{
		800	struct coro prev, next;
		801	int flags;
		802	};
		803
		804	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
		805
		806	static void
		807	coro_state_destroy (struct coro *coro)
		808	{
		809	if (coro->refcnt--)
		810	return;
		811
		812	if (coro->mainstack && coro->mainstack != main_mainstack)
		813	{
		814	struct coro temp;
		815
		816	SAVE ((&temp), TRANSFER_SAVE_ALL);
		817	LOAD (coro);
		818
		819	coro_destroy_stacks ();
		820
		821	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		822
		823	coro->mainstack = 0;
		824	}
		825
		826	stack_free (coro->stack);
		827	SvREFCNT_dec (coro->args);
		828	Safefree (coro);
		829	}
		830
802	static void	831	static int
		832	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		833	{
		834	struct coro coro = (struct coro )mg->mg_ptr;
		835	mg->mg_ptr = 0;
		836
		837	coro_state_destroy (coro);
		838
		839	return 0;
		840	}
		841
		842	static int
		843	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		844	{
		845	struct coro coro = (struct coro )mg->mg_ptr;
		846
		847	++coro->refcnt;
		848
		849	return 0;
		850	}
		851
		852	static MGVTBL coro_state_vtbl = {
		853	0, 0, 0, 0,
		854	coro_state_clear,
		855	0,
		856	#ifdef MGf_DUP
		857	coro_state_dup,
		858	#else
		859	# define MGf_DUP 0
		860	#endif
		861	};
		862
		863	static struct coro *
		864	SvSTATE (SV *coro)
		865	{
		866	HV *stash;
		867	MAGIC *mg;
		868
		869	if (SvROK (coro))
		870	coro = SvRV (coro);
		871
		872	stash = SvSTASH (coro);
		873	if (stash != coro_stash && stash != coro_state_stash)
		874	{
		875	/* very slow, but rare, check */
		876	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		877	croak ("Coro::State object required");
		878	}
		879
		880	mg = SvMAGIC (coro);
		881	assert (mg->mg_type == PERL_MAGIC_ext);
		882	return (struct coro *)mg->mg_ptr;
		883	}
		884
		885	static void
		886	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		887	{
		888	ta->prev = SvSTATE (prev);
		889	ta->next = SvSTATE (next);
		890	ta->flags = flags;
		891	}
		892
		893	static void
803	api_transfer (pTHX_ SV prev, SV next, int flags)	894	api_transfer (SV prev, SV next, int flags)
804	{	895	{
805	SV_CORO (prev, "Coro::transfer");	896	dTHX;
806	SV_CORO (next, "Coro::transfer");	897	struct transfer_args ta;
807		898
808	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	899	prepare_transfer (&ta, prev, next, flags);
		900	TRANSFER (ta);
809	}	901	}
810		902
811	/ Coro ******************************************************************/	903	/ Coro ******************************************************************/
812		904
813	#define PRIO_MAX 3	905	#define PRIO_MAX 3
…		…
821	static GV coro_current, coro_idle;	913	static GV coro_current, coro_idle;
822	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	914	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
823	static int coro_nready;	915	static int coro_nready;
824		916
825	static void	917	static void
826	coro_enq (pTHX_ SV *sv)	918	coro_enq (SV *sv)
827	{	919	{
828	SV **xprio;
829	int prio;	920	int prio;
830		921
831	if (SvTYPE (sv) != SVt_PVHV)	922	if (SvTYPE (sv) != SVt_PVHV)
832	croak ("Coro::ready tried to enqueue something that is not a coroutine");	923	croak ("Coro::ready tried to enqueue something that is not a coroutine");
833		924
834	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	925	prio = SvSTATE (sv)->prio;
835	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
836
837	prio = prio > PRIO_MAX ? PRIO_MAX
838	: prio < PRIO_MIN ? PRIO_MIN
839	: prio;
840		926
841	av_push (coro_ready [prio - PRIO_MIN], sv);	927	av_push (coro_ready [prio - PRIO_MIN], sv);
842	coro_nready++;	928	coro_nready++;
843	}	929	}
844		930
845	static SV *	931	static SV *
846	coro_deq (pTHX_ int min_prio)	932	coro_deq (int min_prio)
847	{	933	{
848	int prio = PRIO_MAX - PRIO_MIN;	934	int prio = PRIO_MAX - PRIO_MIN;
849		935
850	min_prio -= PRIO_MIN;	936	min_prio -= PRIO_MIN;
851	if (min_prio < 0)	937	if (min_prio < 0)
…		…
868		954
869	if (SvROK (coro))	955	if (SvROK (coro))
870	coro = SvRV (coro);	956	coro = SvRV (coro);
871		957
872	LOCK;	958	LOCK;
873	coro_enq (aTHX_ SvREFCNT_inc (coro));	959	coro_enq (SvREFCNT_inc (coro));
874	UNLOCK;	960	UNLOCK;
875	}	961	}
876		962
877	static void	963	static void
		964	prepare_schedule (struct transfer_args *ta)
		965	{
		966	SV current, prev, *next;
		967
		968	current = GvSV (coro_current);
		969
		970	for (;;)
		971	{
		972	LOCK;
		973	next = coro_deq (PRIO_MIN);
		974	UNLOCK;
		975
		976	if (next)
		977	break;
		978
		979	{
		980	dSP;
		981
		982	ENTER;
		983	SAVETMPS;
		984
		985	PUSHMARK (SP);
		986	PUTBACK;
		987	call_sv (GvSV (coro_idle), G_DISCARD);
		988
		989	FREETMPS;
		990	LEAVE;
		991	}
		992	}
		993
		994	prev = SvRV (current);
		995	SvRV (current) = next;
		996
		997	/* free this only after the transfer */
		998	LOCK;
		999	free_coro_mortal ();
		1000	UNLOCK;
		1001	coro_mortal = prev;
		1002
		1003	ta->prev = SvSTATE (prev);
		1004	ta->next = SvSTATE (next);
		1005	ta->flags = TRANSFER_SAVE_ALL;
		1006	}
		1007
		1008	static void
		1009	prepare_cede (struct transfer_args *ta)
		1010	{
		1011	LOCK;
		1012	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		1013	UNLOCK;
		1014
		1015	prepare_schedule (ta);
		1016	}
		1017
		1018	static void
878	api_schedule (void)	1019	api_schedule (void)
879	{	1020	{
880	dTHX;	1021	dTHX;
		1022	struct transfer_args ta;
881		1023
882	SV prev, next;	1024	prepare_schedule (&ta);
883		1025	TRANSFER (ta);
884	LOCK;
885
886	prev = SvRV (GvSV (coro_current));
887	next = coro_deq (aTHX_ PRIO_MIN);
888
889	if (!next)
890	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
891
892	/* free this only after the transfer */
893	coro_mortal = prev;
894	SV_CORO (prev, "Coro::schedule");
895
896	SvRV (GvSV (coro_current)) = next;
897
898	SV_CORO (next, "Coro::schedule");
899
900	UNLOCK;
901
902	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
903	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
904	}	1026	}
905		1027
906	static void	1028	static void
907	api_cede (void)	1029	api_cede (void)
908	{	1030	{
909	dTHX;	1031	dTHX;
		1032	struct transfer_args ta;
910		1033
911	LOCK;	1034	prepare_cede (&ta);
912	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1035	TRANSFER (ta);
913	UNLOCK;
914
915	api_schedule ();
916	}	1036	}
917		1037
918	MODULE = Coro::State PACKAGE = Coro::State	1038	MODULE = Coro::State PACKAGE = Coro::State
919		1039
920	PROTOTYPES: ENABLE	1040	PROTOTYPES: DISABLE
921		1041
922	BOOT:	1042	BOOT:
923	{ /* {} necessary for stoopid perl-5.6.x */	1043	{
924	#ifdef USE_ITHREADS	1044	#ifdef USE_ITHREADS
925	MUTEX_INIT (&coro_mutex);	1045	MUTEX_INIT (&coro_mutex);
926	#endif	1046	#endif
927	BOOT_PAGESIZE;	1047	BOOT_PAGESIZE;
928		1048
929	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
930	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
931	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1049	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
932		1050
933	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1051	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
934	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1052	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
935	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1053	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
936	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
937		1054
938	main_mainstack = PL_mainstack;	1055	main_mainstack = PL_mainstack;
939		1056
940	coroapi.ver = CORO_API_VERSION;	1057	coroapi.ver = CORO_API_VERSION;
941	coroapi.transfer = api_transfer;	1058	coroapi.transfer = api_transfer;
942	}
943		1059
944	Coro::State	1060	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
945	_newprocess(args)	1061	}
946	SV * args	1062
947	PROTOTYPE: $	1063	SV *
		1064	new (char *klass, ...)
948	CODE:	1065	CODE:
949	Coro__State coro;	1066	{
		1067	struct coro *coro;
		1068	HV *hv;
		1069	int i;
950		1070
951	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
952	croak ("Coro::State::_newprocess expects an arrayref");
953
954	Newz (0, coro, 1, struct coro);	1071	Newz (0, coro, 1, struct coro);
		1072	coro->args = newAV ();
955		1073
956	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1074	hv = newHV ();
		1075	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1076	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1077
		1078	for (i = 1; i < items; i++)
		1079	av_push (coro->args, newSVsv (ST (i)));
		1080
957	/coro->mainstack = 0; //actual work is done inside transfer /	1081	/coro->mainstack = 0; //actual work is done inside transfer /
958	/coro->stack = 0;/	1082	/coro->stack = 0;/
959		1083	}
960	RETVAL = coro;
961	OUTPUT:	1084	OUTPUT:
962	RETVAL	1085	RETVAL
963		1086
964	void	1087	void
965	transfer(prev, next, flags)	1088	_set_stacklevel (...)
966	SV *prev	1089	ALIAS:
967	SV *next	1090	Coro::State::transfer = 1
968	int flags	1091	Coro::schedule = 2
969	PROTOTYPE: @	1092	Coro::cede = 3
		1093	Coro::Cont::yield = 4
970	CODE:	1094	CODE:
971	PUTBACK;	1095	{
972	SV_CORO (next, "Coro::transfer");	1096	struct transfer_args ta;
973	SV_CORO (prev, "Coro::transfer");	1097
974	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1098	switch (ix)
975	SPAGAIN;	1099	{
		1100	case 0:
		1101	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1102	ta.next = 0;
		1103	ta.flags = TRANSFER_SET_STACKLEVEL;
		1104	break;
		1105
		1106	case 1:
		1107	if (items != 3)
		1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1109
		1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1111	break;
		1112
		1113	case 2:
		1114	prepare_schedule (&ta);
		1115	break;
		1116
		1117	case 3:
		1118	prepare_cede (&ta);
		1119	break;
		1120
		1121	case 4:
		1122	{
		1123	SV *yieldstack;
		1124	SV *sv;
		1125	AV *defav = GvAV (PL_defgv);
		1126
		1127	yieldstack = *hv_fetch (
		1128	(HV *)SvRV (GvSV (coro_current)),
		1129	"yieldstack", sizeof ("yieldstack") - 1,
		1130	0
		1131	);
		1132
		1133	/* set up @_ -- ugly */
		1134	av_clear (defav);
		1135	av_fill (defav, items - 1);
		1136	while (items--)
		1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1138
		1139	sv = av_pop ((AV *)SvRV (yieldstack));
		1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1142	ta.flags = 0;
		1143	SvREFCNT_dec (sv);
		1144	}
		1145	break;
		1146
		1147	}
		1148
		1149	TRANSFER (ta);
		1150	}
976		1151
977	void	1152	void
978	DESTROY(coro)	1153	_clone_state_from (SV dst, SV src)
979	Coro::State coro	1154	CODE:
980	CODE:	1155	{
		1156	struct coro *coro_src = SvSTATE (src);
981		1157
982	if (coro->mainstack && coro->mainstack != main_mainstack)	1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
983	{
984	struct coro temp;
985		1159
986	PUTBACK;	1160	++coro_src->refcnt;
987	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1161	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
988	LOAD (aTHX_ coro);	1162	}
989	SPAGAIN;
990
991	destroy_stacks (aTHX);
992
993	LOAD ((&temp)); /* this will get rid of defsv etc.. */
994	SPAGAIN;
995
996	coro->mainstack = 0;
997	}
998
999	deallocate_stack (coro);
1000	SvREFCNT_dec (coro->args);
1001	Safefree (coro);
1002		1163
1003	void	1164	void
1004	_exit(code)	1165	_exit (code)
1005	int code	1166	int code
1006	PROTOTYPE: $	1167	PROTOTYPE: $
1007	CODE:	1168	CODE:
1008	_exit (code);	1169	_exit (code);
1009		1170
1010	MODULE = Coro::State PACKAGE = Coro::Cont
1011
1012	void
1013	yield(...)
1014	PROTOTYPE: @
1015	CODE:
1016	SV *yieldstack;
1017	SV *sv;
1018	AV *defav = GvAV (PL_defgv);
1019	struct coro prev, next;
1020
1021	yieldstack = *hv_fetch (
1022	(HV *)SvRV (GvSV (coro_current)),
1023	"yieldstack", sizeof ("yieldstack") - 1,
1024	0
1025	);
1026
1027	/* set up @_ -- ugly */
1028	av_clear (defav);
1029	av_fill (defav, items - 1);
1030	while (items--)
1031	av_store (defav, items, SvREFCNT_inc (ST(items)));
1032
1033	sv = av_pop ((AV *)SvRV (yieldstack));
1034	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1035	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1036	SvREFCNT_dec (sv);
1037
1038	coro_state_transfer (aTHX_ prev, next, 0);
1039
1040	MODULE = Coro::State PACKAGE = Coro	1171	MODULE = Coro::State PACKAGE = Coro
1041		1172
1042	BOOT:	1173	BOOT:
1043	{	1174	{
1044	int i;	1175	int i;
		1176
1045	HV *stash = gv_stashpv ("Coro", TRUE);	1177	coro_stash = gv_stashpv ("Coro", TRUE);
1046		1178
1047	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1179	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1048	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1180	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1049	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1050	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1051	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1052	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1053		1185
1054	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1186	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1055	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1187	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1056		1188
1057	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1070	sv_setiv (sv, (IV)&coroapi);	1202	sv_setiv (sv, (IV)&coroapi);
1071	SvREADONLY_on (sv);	1203	SvREADONLY_on (sv);
1072	}	1204	}
1073	}	1205	}
1074		1206
1075	#if !PERL_MICRO	1207	int
		1208	prio (Coro::State coro, int newprio = 0)
		1209	ALIAS:
		1210	nice = 1
		1211	CODE:
		1212	{
		1213	RETVAL = coro->prio;
		1214
		1215	if (items > 1)
		1216	{
		1217	if (ix)
		1218	newprio += coro->prio;
		1219
		1220	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1221	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1222
		1223	coro->prio = newprio;
		1224	}
		1225	}
1076		1226
1077	void	1227	void
1078	ready(self)	1228	ready (SV *self)
1079	SV * self
1080	PROTOTYPE: $	1229	PROTOTYPE: $
1081	CODE:	1230	CODE:
1082	api_ready (self);	1231	api_ready (self);
1083		1232
1084	#endif
1085
1086	int	1233	int
1087	nready(...)	1234	nready (...)
1088	PROTOTYPE:	1235	PROTOTYPE:
1089	CODE:	1236	CODE:
1090	RETVAL = coro_nready;	1237	RETVAL = coro_nready;
1091	OUTPUT:	1238	OUTPUT:
1092	RETVAL	1239	RETVAL
1093		1240
1094	void	1241	MODULE = Coro::State PACKAGE = Coro::AIO
1095	schedule(...)
1096	PROTOTYPE:
1097	CODE:
1098	api_schedule ();
1099		1242
1100	void
1101	cede(...)
1102	PROTOTYPE:
1103	CODE:
1104	api_cede ();
1105
1106	# and these are hacks
1107	SV *	1243	SV *
1108	_aio_get_state ()	1244	_get_state ()
1109	CODE:	1245	CODE:
1110	{	1246	{
1111	struct {	1247	struct {
1112	int errorno;	1248	int errorno;
1113	int laststype;	1249	int laststype;
…		…
1124	}	1260	}
1125	OUTPUT:	1261	OUTPUT:
1126	RETVAL	1262	RETVAL
1127		1263
1128	void	1264	void
1129	_aio_set_state (char *data_)	1265	_set_state (char *data_)
1130	PROTOTYPE: $	1266	PROTOTYPE: $
1131	CODE:	1267	CODE:
1132	{	1268	{
1133	struct {	1269	struct {
1134	int errorno;	1270	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.84 by root, Fri Nov 24 00:31:21 2006 UTC vs. Revision 1.104 by root, Mon Nov 27 01:51:02 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.84 by root, Fri Nov 24 00:31:21 2006 UTC vs.
Revision 1.104 by root, Mon Nov 27 01:51:02 2006 UTC