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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs.
Revision 1.105 by root, Mon Nov 27 02:01:33 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 top-level JMPENV for each coroutine, needed to catch dies. */	125	/* the c coroutine allocated to this perl coroutine, if any */
106	JMPENV start_env;
107
108	/* the optional C context */
109	coro_stack *stack;	126	coro_stack *stack;
110	void *cursp;	127
		128	/* data associated with this coroutine (initial args) */
		129	AV *args;
111	int gencnt;	130	int refcnt;
112		131
113	/* optionally saved, might be zero */	132	/* optionally saved, might be zero */
114	AV *defav;	133	AV *defav;
115	SV *defsv;	134	SV *defsv;
116	SV *errsv;	135	SV *errsv;
…		…
146	OP **retstack;	165	OP **retstack;
147	I32 retstack_ix;	166	I32 retstack_ix;
148	I32 retstack_max;	167	I32 retstack_max;
149	PMOP *curpm;	168	PMOP *curpm;
150	COP *curcop;	169	COP *curcop;
151	JMPENV *top_env;
152		170
153	/* data associated with this coroutine (initial args) */	171	/* coro process data */
154	AV *args;	172	int prio;
155	};	173	};
156		174
157	typedef struct coro *Coro__State;	175	typedef struct coro *Coro__State;
158	typedef struct coro *Coro__State_or_hashref;	176	typedef struct coro *Coro__State_or_hashref;
159		177
160	static AV *	178	static AV *
161	coro_clone_padlist (pTHX_ CV *cv)	179	coro_clone_padlist (CV *cv)
162	{	180	{
163	AV *padlist = CvPADLIST (cv);	181	AV *padlist = CvPADLIST (cv);
164	AV newpadlist, newpad;	182	AV newpadlist, newpad;
165		183
166	newpadlist = newAV ();	184	newpadlist = newAV ();
167	AvREAL_off (newpadlist);	185	AvREAL_off (newpadlist);
168	#if PERL_VERSION < 9	186	#if PERL_VERSION_ATLEAST (5,9,0)
		187	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		188	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	189	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
170	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
172	#endif	190	#endif
173	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	191	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
174	--AvFILLp (padlist);	192	--AvFILLp (padlist);
175		193
176	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	194	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
178		196
179	return newpadlist;	197	return newpadlist;
180	}	198	}
181		199
182	static void	200	static void
183	free_padlist (pTHX_ AV *padlist)	201	free_padlist (AV *padlist)
184	{	202	{
185	/* may be during global destruction */	203	/* may be during global destruction */
186	if (SvREFCNT (padlist))	204	if (SvREFCNT (padlist))
187	{	205	{
188	I32 i = AvFILLp (padlist);	206	I32 i = AvFILLp (padlist);
…		…
209	AV *padlist;	227	AV *padlist;
210	AV av = (AV )mg->mg_obj;	228	AV av = (AV )mg->mg_obj;
211		229
212	/* casting is fun. */	230	/* casting is fun. */
213	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	231	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
214	free_padlist (aTHX_ padlist);	232	free_padlist (padlist);
215		233
216	SvREFCNT_dec (av);	234	SvREFCNT_dec (av);
217		235
218	return 0;	236	return 0;
219	}	237	}
…		…
222		240
223	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	241	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
224		242
225	/* the next two functions merely cache the padlists */	243	/* the next two functions merely cache the padlists */
226	static void	244	static void
227	get_padlist (pTHX_ CV *cv)	245	get_padlist (CV *cv)
228	{	246	{
229	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
230		248
231	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	249	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
232	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	250	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
233	else	251	else
234	{	252	{
235	#if 0	253	#if 0
236	/* this should work - but it doesn't :( */	254	/* this is probably cleaner, but also slower? */
237	CV *cp = Perl_cv_clone (aTHX_ cv);	255	CV *cp = Perl_cv_clone (cv);
238	CvPADLIST (cv) = CvPADLIST (cp);	256	CvPADLIST (cv) = CvPADLIST (cp);
239	CvPADLIST (cp) = 0;	257	CvPADLIST (cp) = 0;
240	SvREFCNT_dec (cp);	258	SvREFCNT_dec (cp);
241	#else	259	#else
242	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	260	CvPADLIST (cv) = coro_clone_padlist (cv);
243	#endif	261	#endif
244	}	262	}
245	}	263	}
246		264
247	static void	265	static void
248	put_padlist (pTHX_ CV *cv)	266	put_padlist (CV *cv)
249	{	267	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	268	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
251		269
252	if (!mg)	270	if (!mg)
253	{	271	{
…		…
261	}	279	}
262		280
263	#define SB do {	281	#define SB do {
264	#define SE } while (0)	282	#define SE } while (0)
265		283
266	#define LOAD(state) load_state(aTHX_ (state));	284	#define LOAD(state) load_state((state));
267	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	285	#define SAVE(state,flags) save_state((state),(flags));
268		286
269	#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
270		288
271	static void	289	static void
272	load_state(pTHX_ Coro__State c)	290	load_state(Coro__State c)
273	{	291	{
274	PL_dowarn = c->dowarn;	292	PL_dowarn = c->dowarn;
275	PL_in_eval = c->in_eval;	293	PL_in_eval = c->in_eval;
276		294
277	PL_curstackinfo = c->curstackinfo;	295	PL_curstackinfo = c->curstackinfo;
…		…
295	PL_scopestack_ix = c->scopestack_ix;	313	PL_scopestack_ix = c->scopestack_ix;
296	PL_scopestack_max = c->scopestack_max;	314	PL_scopestack_max = c->scopestack_max;
297	PL_savestack = c->savestack;	315	PL_savestack = c->savestack;
298	PL_savestack_ix = c->savestack_ix;	316	PL_savestack_ix = c->savestack_ix;
299	PL_savestack_max = c->savestack_max;	317	PL_savestack_max = c->savestack_max;
300	#if PERL_VERSION < 9	318	#if !PERL_VERSION_ATLEAST (5,9,0)
301	PL_retstack = c->retstack;	319	PL_retstack = c->retstack;
302	PL_retstack_ix = c->retstack_ix;	320	PL_retstack_ix = c->retstack_ix;
303	PL_retstack_max = c->retstack_max;	321	PL_retstack_max = c->retstack_max;
304	#endif	322	#endif
305	PL_curpm = c->curpm;	323	PL_curpm = c->curpm;
306	PL_curcop = c->curcop;	324	PL_curcop = c->curcop;
307	PL_top_env = c->top_env;
308		325
309	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	326	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
310	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	327	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
311	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	328	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
312		329
…		…
319	{	336	{
320	AV padlist = (AV )POPs;	337	AV padlist = (AV )POPs;
321		338
322	if (padlist)	339	if (padlist)
323	{	340	{
324	put_padlist (aTHX_ cv); /* mark this padlist as available */	341	put_padlist (cv); /* mark this padlist as available */
325	CvPADLIST(cv) = padlist;	342	CvPADLIST(cv) = padlist;
326	}	343	}
327		344
328	++CvDEPTH(cv);	345	++CvDEPTH(cv);
329	}	346	}
…		…
331	PUTBACK;	348	PUTBACK;
332	}	349	}
333	}	350	}
334		351
335	static void	352	static void
336	save_state(pTHX_ Coro__State c, int flags)	353	save_state(Coro__State c, int flags)
337	{	354	{
338	{	355	{
339	dSP;	356	dSP;
340	I32 cxix = cxstack_ix;	357	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	358	PERL_CONTEXT *ccstk = cxstack;
…		…
369	}	386	}
370		387
371	PUSHs ((SV *)CvPADLIST(cv));	388	PUSHs ((SV *)CvPADLIST(cv));
372	PUSHs ((SV *)cv);	389	PUSHs ((SV *)cv);
373		390
374	get_padlist (aTHX_ cv);	391	get_padlist (cv);
375	}	392	}
376	}	393	}
377	#ifdef CXt_FORMAT	394	#ifdef CXt_FORMAT
378	else if (CxTYPE(cx) == CXt_FORMAT)	395	else if (CxTYPE(cx) == CXt_FORMAT)
379	{	396	{
…		…
423	c->scopestack_ix = PL_scopestack_ix;	440	c->scopestack_ix = PL_scopestack_ix;
424	c->scopestack_max = PL_scopestack_max;	441	c->scopestack_max = PL_scopestack_max;
425	c->savestack = PL_savestack;	442	c->savestack = PL_savestack;
426	c->savestack_ix = PL_savestack_ix;	443	c->savestack_ix = PL_savestack_ix;
427	c->savestack_max = PL_savestack_max;	444	c->savestack_max = PL_savestack_max;
428	#if PERL_VERSION < 9	445	#if !PERL_VERSION_ATLEAST (5,9,0)
429	c->retstack = PL_retstack;	446	c->retstack = PL_retstack;
430	c->retstack_ix = PL_retstack_ix;	447	c->retstack_ix = PL_retstack_ix;
431	c->retstack_max = PL_retstack_max;	448	c->retstack_max = PL_retstack_max;
432	#endif	449	#endif
433	c->curpm = PL_curpm;	450	c->curpm = PL_curpm;
434	c->curcop = PL_curcop;	451	c->curcop = PL_curcop;
435	c->top_env = PL_top_env;
436	}	452	}
437		453
438	/*	454	/*
439	* allocate various perl stacks. This is an exact copy	455	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	456	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	457	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	458	* not usually need a lot of stackspace.
443	*/	459	*/
444	static void	460	static void
445	coro_init_stacks (pTHX)	461	coro_init_stacks ()
446	{	462	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	463	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
450	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		467
…		…
474		488
475	New(54,PL_savestack,96,ANY);	489	New(54,PL_savestack,96,ANY);
476	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	491	PL_savestack_max = 96;
478		492
479	#if PERL_VERSION < 9	493	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	494	New(54,PL_retstack,8,OP*);
481	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	496	PL_retstack_max = 8;
483	#endif	497	#endif
484
485	UNLOCK;
486	}	498	}
487		499
488	/*	500	/*
489	* destroy the stacks, the callchain etc...	501	* destroy the stacks, the callchain etc...
490	*/	502	*/
491	static void	503	static void
492	destroy_stacks(pTHX)	504	coro_destroy_stacks()
493	{	505	{
494	if (!IN_DESTRUCT)	506	if (!IN_DESTRUCT)
495	{	507	{
496	/* is this ugly, I ask? */	508	/* is this ugly, I ask? */
497	LEAVE_SCOPE (0);	509	LEAVE_SCOPE (0);
…		…
528		540
529	Safefree (PL_tmps_stack);	541	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	542	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	543	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	544	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	545	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	546	Safefree (PL_retstack);
535	#endif	547	#endif
536	}	548	}
537		549
538	static void	550	static void
539	allocate_stack (Coro__State ctx, int alloc)	551	setup_coro (struct coro *coro)
540	{
541	coro_stack *stack;
542
543	New (0, stack, 1, coro_stack);
544
545	stack->refcnt = 1;
546	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;
548
549	if (alloc)
550	{
551	#if HAVE_MMAP
552	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
553	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
554	if (stack->sptr != (void *)-1)
555	{
556	# if STACKGUARD
557	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
558	# endif
559	}
560	else
561	#endif
562	{
563	stack->ssize = - (STACKSIZE * (long)sizeof (long));
564	New (0, stack->sptr, STACKSIZE, long);
565	}
566	}
567	else
568	stack->sptr = 0;
569
570	ctx->stack = stack;
571	}
572
573	static void
574	deallocate_stack (Coro__State ctx)
575	{
576	coro_stack *stack = ctx->stack;
577
578	ctx->stack = 0;
579
580	if (stack)
581	{
582	if (!--stack->refcnt)
583	{
584	#ifdef HAVE_MMAP
585	if (stack->ssize > 0 && stack->sptr)
586	munmap (stack->sptr, stack->ssize);
587	else
588	#endif
589	Safefree (stack->sptr);
590
591	Safefree (stack);
592	}
593	else if (ctx->gencnt == stack->gencnt)
594	--stack->usecnt;
595	}
596	}
597
598	static void
599	setup_coro (void *arg)
600	{	552	{
601	/*	553	/*
602	* emulate part of the perl startup here.	554	* emulate part of the perl startup here.
603	*/	555	*/
604	dTHX;
605	dSP;
606	Coro__State ctx = (Coro__State)arg;
607	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
608		556
609	coro_init_stacks (aTHX);	557	coro_init_stacks ();
		558
610	/PL_curcop = 0;/	559	PL_curcop = 0;
611	/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
612	SvREFCNT_dec (GvAV (PL_defgv));	570	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	571	GvAV (PL_defgv) = coro->args; coro->args = 0;
614		572
615	SPAGAIN;
616
617	if (ctx->stack)
618	{
619	ctx->cursp = 0;
620
621	PUSHMARK(SP);
622	PUTBACK;
623	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
624
625	if (SvTRUE (ERRSV))
626	croak (NULL);
627	else
628	croak ("FATAL: CCTXT coroutine returned!");
629	}
630	else
631	{
632	UNOP myop;
633
634	PL_op = (OP *)&myop;
635
636	Zero(&myop, 1, UNOP);	573	Zero (&myop, 1, LOGOP);
637	myop.op_next = Nullop;	574	myop.op_next = Nullop;
638	myop.op_flags = OPf_WANT_VOID;	575	myop.op_flags = OPf_WANT_VOID;
639		576
		577	PL_op = (OP *)&myop;
		578
640	PUSHMARK(SP);	579	PUSHMARK (SP);
641	XPUSHs (sub_init);	580	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
642	/*
643	* the next line is slightly wrong, as PL_op->op_next
644	* is actually being executed so we skip the first op.
645	* that doesn't matter, though, since it is only
646	* pp_nextstate and we never return...
647	* ah yes, and I don't care anyways ;)
648	*/
649	PUTBACK;	581	PUTBACK;
650	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	582	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
651	SPAGAIN;	583	SPAGAIN;
652		584
653	ENTER; /* necessary e.g. for dounwind */	585	ENTER; /* necessary e.g. for dounwind */
654	}	586	}
655	}	587	}
656		588
657	static void	589	static void
658	continue_coro (void *arg)	590	free_coro_mortal ()
659	{	591	{
660	/*
661	* this is a _very_ stripped down perl interpreter ;)
662	*/
663	dTHX;
664	Coro__State ctx = (Coro__State)arg;
665
666	PL_top_env = &ctx->start_env;
667
668	ctx->cursp = 0;
669	PL_op = PL_op->op_next;
670	CALLRUNOPS(aTHX);
671
672	abort ();
673	}
674
675	static void
676	transfer (pTHX_ struct coro prev, struct coro next, int flags)
677	{
678	dSTACKLEVEL;
679
680	if (prev != next)
681	{
682	if (next->mainstack)
683	{
684	LOCK;
685	SAVE (prev, flags);
686	LOAD (next);
687	UNLOCK;
688
689	/* mark this state as in-use */
690	next->mainstack = 0;
691	next->tmps_ix = -2;
692
693	/* stacklevel changed? if yes, grab the stack for us! */
694	if (flags & TRANSFER_SAVE_CCTXT)
695	{
696	if (!prev->stack)
697	allocate_stack (prev, 0);
698	else if (prev->cursp != stacklevel
699	&& prev->stack->usecnt > 1)
700	{
701	prev->gencnt = ++prev->stack->gencnt;
702	prev->stack->usecnt = 1;
703	}
704
705	/* has our stack been invalidated? */
706	if (next->stack && next->stack->gencnt != next->gencnt)
707	{
708	deallocate_stack (next);
709	allocate_stack (next, 1);
710	coro_create (&(next->stack->cctx),
711	continue_coro, (void *)next,
712	next->stack->sptr, labs (next->stack->ssize));
713	}
714
715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
716	prev->cursp = stacklevel;
717	/* don't add any code here */
718	}
719	else
720	next->cursp = stacklevel;
721	}
722	else if (next->tmps_ix == -2)
723	croak ("tried to transfer to running coroutine");
724	else
725	{
726	LOCK;
727	SAVE (prev, -1); /* first get rid of the old state */
728	UNLOCK;
729
730	if (flags & TRANSFER_SAVE_CCTXT)
731	{
732	if (!prev->stack)
733	allocate_stack (prev, 0);
734
735	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
736	{
737	PL_top_env = &next->start_env;
738
739	setup_coro (next);
740	next->cursp = stacklevel;
741
742	prev->stack->refcnt++;
743	prev->stack->usecnt++;
744	next->stack = prev->stack;
745	next->gencnt = prev->gencnt;
746	}
747	else
748	{
749	assert (!next->stack);
750	allocate_stack (next, 1);
751	coro_create (&(next->stack->cctx),
752	setup_coro, (void *)next,
753	next->stack->sptr, labs (next->stack->ssize));
754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
755	prev->cursp = stacklevel;
756	/* don't add any code here */
757	}
758	}
759	else
760	{
761	setup_coro (next);
762	next->cursp = stacklevel;
763	}
764	}
765	}
766
767	LOCK;
768	if (coro_mortal)	592	if (coro_mortal)
769	{	593	{
770	SvREFCNT_dec (coro_mortal);	594	SvREFCNT_dec (coro_mortal);
771	coro_mortal = 0;	595	coro_mortal = 0;
772	}	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() */
773	UNLOCK;	622	UNLOCK;
774	}
775		623
776	#define SV_CORO(sv,func) \	624	/*
777	do { \	625	* this is a _very_ stripped down perl interpreter ;)
778	if (SvROK (sv)) \	626	*/
779	sv = SvRV (sv); \	627	PL_top_env = &PL_start_env;
780	\	628	/* inject call to cctx_init */
781	if (SvTYPE (sv) == SVt_PVHV) \	629	prepare_cctx ((coro_stack *)arg);
782	{ \
783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
784	\
785	if (!he) \
786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
787	\
788	(sv) = SvRV (HeVAL(he)); \
789	} \
790	\
791	/* must also be changed inside Coro::Cont::yield */ \
792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
794	\
795	} while(0)
796		630
797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	631	/* somebody will hit me for both perl_run and PL_restartop */
		632	perl_run (PL_curinterp);
798		633
		634	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
		635	abort ();
		636	}
		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
799	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
800	api_transfer(pTHX_ SV prev, SV next, int flags)	894	api_transfer (SV prev, SV next, int flags)
801	{	895	{
802	SV_CORO (prev, "Coro::transfer");	896	dTHX;
803	SV_CORO (next, "Coro::transfer");	897	struct transfer_args ta;
804		898
805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	899	prepare_transfer (&ta, prev, next, flags);
		900	TRANSFER (ta);
806	}	901	}
807		902
808	/ Coro ******************************************************************/	903	/ Coro ******************************************************************/
809		904
810	#define PRIO_MAX 3	905	#define PRIO_MAX 3
…		…
814	#define PRIO_IDLE -3	909	#define PRIO_IDLE -3
815	#define PRIO_MIN -4	910	#define PRIO_MIN -4
816		911
817	/* for Coro.pm */	912	/* for Coro.pm */
818	static GV coro_current, coro_idle;	913	static GV coro_current, coro_idle;
819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	914	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
820	static int coro_nready;	915	static int coro_nready;
821		916
822	static void	917	static void
823	coro_enq (pTHX_ SV *sv)	918	coro_enq (SV *sv)
824	{	919	{
825	SV **xprio;
826	int prio;	920	int prio;
827		921
828	if (SvTYPE (sv) != SVt_PVHV)	922	if (SvTYPE (sv) != SVt_PVHV)
829	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");
830		924
831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	925	prio = SvSTATE (sv)->prio;
832	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
833
834	prio = prio > PRIO_MAX ? PRIO_MAX
835	: prio < PRIO_MIN ? PRIO_MIN
836	: prio;
837		926
838	av_push (coro_ready [prio - PRIO_MIN], sv);	927	av_push (coro_ready [prio - PRIO_MIN], sv);
839	coro_nready++;	928	coro_nready++;
840	}	929	}
841		930
842	static SV *	931	static SV *
843	coro_deq (pTHX_ int min_prio)	932	coro_deq (int min_prio)
844	{	933	{
845	int prio = PRIO_MAX - PRIO_MIN;	934	int prio = PRIO_MAX - PRIO_MIN;
846		935
847	min_prio -= PRIO_MIN;	936	min_prio -= PRIO_MIN;
848	if (min_prio < 0)	937	if (min_prio < 0)
849	min_prio = 0;	938	min_prio = 0;
850		939
851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
852	if (av_len (coro_ready[prio]) >= 0)	941	if (AvFILLp (coro_ready [prio]) >= 0)
853	{	942	{
854	coro_nready--;	943	coro_nready--;
855	return av_shift (coro_ready[prio]);	944	return av_shift (coro_ready [prio]);
856	}	945	}
857		946
858	return 0;	947	return 0;
859	}	948	}
860		949
…		…
865		954
866	if (SvROK (coro))	955	if (SvROK (coro))
867	coro = SvRV (coro);	956	coro = SvRV (coro);
868		957
869	LOCK;	958	LOCK;
870	coro_enq (aTHX_ SvREFCNT_inc (coro));	959	coro_enq (SvREFCNT_inc (coro));
871	UNLOCK;	960	UNLOCK;
872	}	961	}
873		962
874	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
875	api_schedule (void)	1019	api_schedule (void)
876	{	1020	{
877	dTHX;	1021	dTHX;
		1022	struct transfer_args ta;
878		1023
879	SV prev, next;	1024	prepare_schedule (&ta);
880		1025	TRANSFER (ta);
881	LOCK;
882
883	prev = SvRV (GvSV (coro_current));
884	next = coro_deq (aTHX_ PRIO_MIN);
885
886	if (!next)
887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
888
889	/* free this only after the transfer */
890	coro_mortal = prev;
891	SV_CORO (prev, "Coro::schedule");
892
893	SvRV (GvSV (coro_current)) = next;
894
895	SV_CORO (next, "Coro::schedule");
896
897	UNLOCK;
898
899	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
901	}	1026	}
902		1027
903	static void	1028	static void
904	api_cede (void)	1029	api_cede (void)
905	{	1030	{
906	dTHX;	1031	dTHX;
		1032	struct transfer_args ta;
907		1033
908	LOCK;	1034	prepare_cede (&ta);
909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1035	TRANSFER (ta);
910	UNLOCK;
911
912	api_schedule ();
913	}	1036	}
914		1037
915	MODULE = Coro::State PACKAGE = Coro::State	1038	MODULE = Coro::State PACKAGE = Coro::State
916		1039
917	PROTOTYPES: ENABLE	1040	PROTOTYPES: DISABLE
918		1041
919	BOOT:	1042	BOOT:
920	{ /* {} necessary for stoopid perl-5.6.x */	1043	{
921	#ifdef USE_ITHREADS	1044	#ifdef USE_ITHREADS
922	MUTEX_INIT (&coro_mutex);	1045	MUTEX_INIT (&coro_mutex);
923	#endif	1046	#endif
924	BOOT_PAGESIZE;	1047	BOOT_PAGESIZE;
925		1048
926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1049	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
929		1050
930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1051	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1052	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1053	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
934		1054
935	main_mainstack = PL_mainstack;	1055	main_mainstack = PL_mainstack;
936		1056
937	coroapi.ver = CORO_API_VERSION;	1057	coroapi.ver = CORO_API_VERSION;
938	coroapi.transfer = api_transfer;	1058	coroapi.transfer = api_transfer;
939	}
940		1059
941	Coro::State	1060	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
942	_newprocess(args)	1061	}
943	SV * args	1062
944	PROTOTYPE: $	1063	SV *
		1064	new (char *klass, ...)
945	CODE:	1065	CODE:
946	Coro__State coro;	1066	{
		1067	struct coro *coro;
		1068	HV *hv;
		1069	int i;
947		1070
948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
949	croak ("Coro::State::_newprocess expects an arrayref");
950
951	Newz (0, coro, 1, struct coro);	1071	Newz (0, coro, 1, struct coro);
		1072	coro->args = newAV ();
952		1073
953	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
954	/coro->mainstack = 0; //actual work is done inside transfer /	1081	/coro->mainstack = 0; //actual work is done inside transfer /
955	/coro->stack = 0;/	1082	/coro->stack = 0;/
956		1083	}
957	/* same as JMPENV_BOOTSTRAP */
958	/* we might be able to recycle start_env, but safe is safe */
959	/Zero(&coro->start_env, 1, JMPENV);/
960	coro->start_env.je_ret = -1;
961	coro->start_env.je_mustcatch = TRUE;
962
963	RETVAL = coro;
964	OUTPUT:	1084	OUTPUT:
965	RETVAL	1085	RETVAL
966		1086
967	void	1087	void
968	transfer(prev, next, flags)	1088	_set_stacklevel (...)
969	SV *prev	1089	ALIAS:
970	SV *next	1090	Coro::State::transfer = 1
971	int flags	1091	Coro::schedule = 2
972	PROTOTYPE: @	1092	Coro::cede = 3
		1093	Coro::Cont::yield = 4
973	CODE:	1094	CODE:
974	PUTBACK;	1095	{
975	SV_CORO (next, "Coro::transfer");	1096	struct transfer_args ta;
976	SV_CORO (prev, "Coro::transfer");	1097
977	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1098	switch (ix)
978	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	}
979		1151
980	void	1152	void
981	DESTROY(coro)	1153	_clone_state_from (SV dst, SV src)
982	Coro::State coro	1154	CODE:
983	CODE:	1155	{
		1156	struct coro *coro_src = SvSTATE (src);
984		1157
985	if (coro->mainstack && coro->mainstack != main_mainstack)	1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
986	{
987	struct coro temp;
988		1159
989	PUTBACK;	1160	++coro_src->refcnt;
990	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;
991	LOAD (aTHX_ coro);	1162	}
992	SPAGAIN;
993
994	destroy_stacks (aTHX);
995
996	LOAD ((&temp)); /* this will get rid of defsv etc.. */
997	SPAGAIN;
998
999	coro->mainstack = 0;
1000	}
1001
1002	deallocate_stack (coro);
1003	SvREFCNT_dec (coro->args);
1004	Safefree (coro);
1005		1163
1006	void	1164	void
1007	_exit(code)	1165	_exit (code)
1008	int code	1166	int code
1009	PROTOTYPE: $	1167	PROTOTYPE: $
1010	CODE:	1168	CODE:
1011	_exit (code);	1169	_exit (code);
1012		1170
1013	MODULE = Coro::State PACKAGE = Coro::Cont
1014
1015	# this is slightly dirty (should expose a c-level api)
1016
1017	void
1018	yield(...)
1019	PROTOTYPE: @
1020	CODE:
1021	SV *yieldstack;
1022	SV *sv;
1023	AV *defav = GvAV (PL_defgv);
1024	struct coro prev, next;
1025
1026	yieldstack = *hv_fetch (
1027	(HV *)SvRV (GvSV (coro_current)),
1028	"yieldstack", sizeof ("yieldstack") - 1,
1029	0
1030	);
1031
1032	/* set up @_ -- ugly */
1033	av_clear (defav);
1034	av_fill (defav, items - 1);
1035	while (items--)
1036	av_store (defav, items, SvREFCNT_inc (ST(items)));
1037
1038	sv = av_pop ((AV *)SvRV (yieldstack));
1039	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1040	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1041	SvREFCNT_dec (sv);
1042
1043	transfer (aTHX_ prev, next, 0);
1044
1045	MODULE = Coro::State PACKAGE = Coro	1171	MODULE = Coro::State PACKAGE = Coro
1046		1172
1047	# this is slightly dirty (should expose a c-level api)
1048
1049	BOOT:	1173	BOOT:
1050	{	1174	{
1051	int i;	1175	int i;
		1176
1052	HV *stash = gv_stashpv ("Coro", TRUE);	1177	coro_stash = gv_stashpv ("Coro", TRUE);
1053		1178
1054	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1179	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1055	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1180	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1056	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1057	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1058	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1059	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1060		1185
1061	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1186	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1062	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1187	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1063		1188
1064	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1072	coroapi.ready = api_ready;	1197	coroapi.ready = api_ready;
1073	coroapi.nready = &coro_nready;	1198	coroapi.nready = &coro_nready;
1074	coroapi.current = coro_current;	1199	coroapi.current = coro_current;
1075		1200
1076	GCoroAPI = &coroapi;	1201	GCoroAPI = &coroapi;
1077	sv_setiv(sv, (IV)&coroapi);	1202	sv_setiv (sv, (IV)&coroapi);
1078	SvREADONLY_on(sv);	1203	SvREADONLY_on (sv);
1079	}	1204	}
1080	}	1205	}
1081		1206
1082	#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	}
1083		1226
1084	void	1227	void
1085	ready(self)	1228	ready (SV *self)
1086	SV * self
1087	PROTOTYPE: $	1229	PROTOTYPE: $
1088	CODE:	1230	CODE:
1089	api_ready (self);	1231	api_ready (self);
1090		1232
1091	#endif
1092
1093	int	1233	int
1094	nready(...)	1234	nready (...)
1095	PROTOTYPE:	1235	PROTOTYPE:
1096	CODE:	1236	CODE:
1097	RETVAL = coro_nready;	1237	RETVAL = coro_nready;
1098	OUTPUT:	1238	OUTPUT:
1099	RETVAL	1239	RETVAL
1100		1240
1101	void	1241	MODULE = Coro::State PACKAGE = Coro::AIO
1102	schedule(...)
1103	PROTOTYPE:
1104	CODE:
1105	api_schedule ();
1106		1242
1107	void
1108	cede(...)
1109	PROTOTYPE:
1110	CODE:
1111	api_cede ();
1112
1113	# and these are hacks
1114	SV *	1243	SV *
1115	_aio_get_state ()	1244	_get_state ()
1116	CODE:	1245	CODE:
1117	{	1246	{
1118	struct {	1247	struct {
1119	int errorno;	1248	int errorno;
1120	int laststype;	1249	int laststype;
…		…
1131	}	1260	}
1132	OUTPUT:	1261	OUTPUT:
1133	RETVAL	1262	RETVAL
1134		1263
1135	void	1264	void
1136	_aio_set_state (char *data_)	1265	_set_state (char *data_)
1137	PROTOTYPE: $	1266	PROTOTYPE: $
1138	CODE:	1267	CODE:
1139	{	1268	{
1140	struct {	1269	struct {
1141	int errorno;	1270	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs. Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs.
Revision 1.105 by root, Mon Nov 27 02:01:33 2006 UTC