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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC

…		…
4	#include "perl.h"	4	#include "perl.h"
5	#include "XSUB.h"	5	#include "XSUB.h"
6		6
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	9	#include <stdio.h>
44	#include <errno.h>	10	#include <errno.h>
45		11	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		12
54	#ifdef HAVE_MMAP	13	#ifdef HAVE_MMAP
55	# include <unistd.h>	14	# include <unistd.h>
56	# include <sys/mman.h>	15	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	16	# ifndef MAP_ANONYMOUS
…		…
72	#else	31	#else
73	# define PAGESIZE 0	32	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
75	#endif	34	#endif
76		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
		50	# ifndef PL_ppaddr
		51	# define PL_ppaddr ppaddr
		52	# endif
		53	# ifndef call_sv
		54	# define call_sv perl_call_sv
		55	# endif
		56	# ifndef get_sv
		57	# define get_sv perl_get_sv
		58	# endif
		59	# ifndef get_cv
		60	# define get_cv perl_get_cv
		61	# endif
		62	# ifndef IS_PADGV
		63	# define IS_PADGV(v) 0
		64	# endif
		65	# ifndef IS_PADCONST
		66	# define IS_PADCONST(v) 0
		67	# endif
		68	#endif
		69
		70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
		74
		75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		76	# undef STACKGUARD
		77	#endif
		78
		79	#ifndef STACKGUARD
		80	# define STACKGUARD 0
		81	#endif
		82
		83	/* prefer perl internal functions over our own? */
		84	#ifndef PREFER_PERL_FUNCTIONS
		85	# define PREFER_PERL_FUNCTIONS 0
		86	#endif
		87
77	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* The next macro should declare a variable stacklevel that contains and approximation
78	* to the current C stack pointer. Its property is that it changes with each call	89	* to the current C stack pointer. Its property is that it changes with each call
79	* and should be unique. */	90	* and should be unique. */
80	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
82		93
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		95
85	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	99	#else
88	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
89	#endif	102	#endif
90		103
91	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
92		105
93	#include "CoroAPI.h"	106	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		107
97	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	112	#else
102	# define LOCK (void)0	113	# define LOCK (void)0
103	# define UNLOCK (void)0	114	# define UNLOCK (void)0
104	#endif	115	#endif
105		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
106	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
108	static HV coro_state_stash, coro_stash;	127	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
110		129
…		…
143	coro_cctx *cctx;	162	coro_cctx *cctx;
144		163
145	/* data associated with this coroutine (initial args) */	164	/* data associated with this coroutine (initial args) */
146	AV *args;	165	AV *args;
147	int refcnt;	166	int refcnt;
148	int flags;	167	int save; /* CORO_SAVE flags */
		168	int flags; /* CF_ flags */
149		169
150	/* optionally saved, might be zero */	170	/* optionally saved, might be zero */
151	AV *defav;	171	AV defav; / @_ */
152	SV *defsv;	172	SV defsv; / $_ */
153	SV *errsv;	173	SV errsv; / $@ */
		174	SV irssv; / $/ */
		175	SV irssv_sv; / real $/ cache */
154		176
155	#define VAR(name,type) type name;	177	#define VAR(name,type) type name;
156	# include "state.h"	178	# include "state.h"
157	#undef VAR	179	#undef VAR
158		180
…		…
244		266
245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	267	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	268	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247	else	269	else
248	{	270	{
249	#if 0	271	#if PREFER_PERL_FUNCTIONS
250	/* this is probably cleaner, but also slower? */	272	/* this is probably cleaner, but also slower? */
251	CV *cp = Perl_cv_clone (cv);	273	CV *cp = Perl_cv_clone (cv);
252	CvPADLIST (cv) = CvPADLIST (cp);	274	CvPADLIST (cv) = CvPADLIST (cp);
253	CvPADLIST (cp) = 0;	275	CvPADLIST (cp) = 0;
254	SvREFCNT_dec (cp);	276	SvREFCNT_dec (cp);
…		…
281	}	303	}
282		304
283	#define SB do {	305	#define SB do {
284	#define SE } while (0)	306	#define SE } while (0)
285		307
286	#define LOAD(state) load_state ((state))
287	#define SAVE(state,flags) save_state ((state),(flags))
288
289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
290		309
291	static void	310	static void
292	load_state (Coro__State c)	311	load_perl (Coro__State c)
293	{	312	{
294	#define VAR(name,type) PL_ ## name = c->name;	313	#define VAR(name,type) PL_ ## name = c->name;
295	# include "state.h"	314	# include "state.h"
296	#undef VAR	315	#undef VAR
297		316
298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		320	if (c->irssv)
		321	{
		322	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		323	SvREFCNT_dec (c->irssv);
		324	else
		325	{
		326	REPLACE_SV (PL_rs, c->irssv);
		327	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		328	sv_setsv (c->irssv_sv, PL_rs);
		329	}
		330	}
301		331
302	{	332	{
303	dSP;	333	dSP;
304	CV *cv;	334	CV *cv;
305		335
…		…
314	PUTBACK;	344	PUTBACK;
315	}	345	}
316	}	346	}
317		347
318	static void	348	static void
319	save_state (Coro__State c, int flags)	349	save_perl (Coro__State c)
320	{	350	{
321	{	351	{
322	dSP;	352	dSP;
323	I32 cxix = cxstack_ix;	353	I32 cxix = cxstack_ix;
324	PERL_CONTEXT *ccstk = cxstack;	354	PERL_CONTEXT *ccstk = cxstack;
…		…
327	/*	357	/*
328	* the worst thing you can imagine happens first - we have to save	358	* the worst thing you can imagine happens first - we have to save
329	* (and reinitialize) all cv's in the whole callchain :(	359	* (and reinitialize) all cv's in the whole callchain :(
330	*/	360	*/
331		361
		362	EXTEND (SP, 3 + 1);
332	PUSHs (Nullsv);	363	PUSHs (Nullsv);
333	/* this loop was inspired by pp_caller */	364	/* this loop was inspired by pp_caller */
334	for (;;)	365	for (;;)
335	{	366	{
336	while (cxix >= 0)	367	while (cxix >= 0)
…		…
342	CV *cv = cx->blk_sub.cv;	373	CV *cv = cx->blk_sub.cv;
343		374
344	if (CvDEPTH (cv))	375	if (CvDEPTH (cv))
345	{	376	{
346	EXTEND (SP, 3);	377	EXTEND (SP, 3);
347
348	PUSHs ((SV *)CvPADLIST (cv));	378	PUSHs ((SV *)CvPADLIST (cv));
349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	379	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
350	PUSHs ((SV *)cv);	380	PUSHs ((SV *)cv);
351		381
352	CvDEPTH (cv) = 0;	382	CvDEPTH (cv) = 0;
353	get_padlist (cv);	383	get_padlist (cv);
354	}	384	}
355	}	385	}
356	#ifdef CXt_FORMAT
357	else if (CxTYPE (cx) == CXt_FORMAT)
358	{
359	/* I never used formats, so how should I know how these are implemented? */
360	/* my bold guess is as a simple, plain sub... */
361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
362	}
363	#endif
364	}	386	}
365		387
366	if (top_si->si_type == PERLSI_MAIN)	388	if (top_si->si_type == PERLSI_MAIN)
367	break;	389	break;
368		390
…		…
372	}	394	}
373		395
374	PUTBACK;	396	PUTBACK;
375	}	397	}
376		398
377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	399	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	400	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	401	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		402	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
380		403
381	#define VAR(name,type)c->name = PL_ ## name;	404	#define VAR(name,type)c->name = PL_ ## name;
382	# include "state.h"	405	# include "state.h"
383	#undef VAR	406	#undef VAR
384	}	407	}
…		…
387	* allocate various perl stacks. This is an exact copy	410	* allocate various perl stacks. This is an exact copy
388	* of perl.c:init_stacks, except that it uses less memory	411	* of perl.c:init_stacks, except that it uses less memory
389	* on the (sometimes correct) assumption that coroutines do	412	* on the (sometimes correct) assumption that coroutines do
390	* not usually need a lot of stackspace.	413	* not usually need a lot of stackspace.
391	*/	414	*/
		415	#if PREFER_PERL_FUNCTIONS
		416	# define coro_init_stacks init_stacks
		417	#else
392	static void	418	static void
393	coro_init_stacks ()	419	coro_init_stacks ()
394	{	420	{
395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	421	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
396	PL_curstackinfo->si_type = PERLSI_MAIN;	422	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
426	New(54,PL_retstack,16,OP*);	452	New(54,PL_retstack,16,OP*);
427	PL_retstack_ix = 0;	453	PL_retstack_ix = 0;
428	PL_retstack_max = 16;	454	PL_retstack_max = 16;
429	#endif	455	#endif
430	}	456	}
		457	#endif
431		458
432	/*	459	/*
433	* destroy the stacks, the callchain etc...	460	* destroy the stacks, the callchain etc...
434	*/	461	*/
435	static void	462	static void
436	coro_destroy_stacks ()	463	coro_destroy_stacks ()
437	{	464	{
438	if (!IN_DESTRUCT)	465	if (!IN_DESTRUCT)
439	{	466	{
440	/* is this ugly, I ask? */	467	/* restore all saved variables and stuff */
441	LEAVE_SCOPE (0);	468	LEAVE_SCOPE (0);
		469	assert (PL_tmps_floor == -1);
442		470
443	/* sure it is, but more important: is it correct?? :/ */	471	/* free all temporaries */
444	FREETMPS;	472	FREETMPS;
		473	assert (PL_tmps_ix == -1);
445		474
446	/POPSTACK_TO (PL_mainstack);//D//use/	475	POPSTACK_TO (PL_mainstack);
447	}	476	}
448		477
449	while (PL_curstackinfo->si_next)	478	while (PL_curstackinfo->si_next)
450	PL_curstackinfo = PL_curstackinfo->si_next;	479	PL_curstackinfo = PL_curstackinfo->si_next;
451		480
452	while (PL_curstackinfo)	481	while (PL_curstackinfo)
453	{	482	{
454	PERL_SI *p = PL_curstackinfo->si_prev;	483	PERL_SI *p = PL_curstackinfo->si_prev;
455		484
456	{ /D//remove/
457	dSP;
458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459	PUTBACK; /* possibly superfluous */
460	}
461
462	if (!IN_DESTRUCT)	485	if (!IN_DESTRUCT)
463	{
464	dounwind (-1);/D//remove/
465	SvREFCNT_dec (PL_curstackinfo->si_stack);	486	SvREFCNT_dec (PL_curstackinfo->si_stack);
466	}
467		487
468	Safefree (PL_curstackinfo->si_cxstack);	488	Safefree (PL_curstackinfo->si_cxstack);
469	Safefree (PL_curstackinfo);	489	Safefree (PL_curstackinfo);
470	PL_curstackinfo = p;	490	PL_curstackinfo = p;
471	}	491	}
…		…
497		517
498	{	518	{
499	dSP;	519	dSP;
500	LOGOP myop;	520	LOGOP myop;
501		521
502	/* I have no idea why this is needed, but it is */
503	PUSHMARK (SP);
504
505	SvREFCNT_dec (GvAV (PL_defgv));	522	SvREFCNT_dec (GvAV (PL_defgv));
506	GvAV (PL_defgv) = coro->args; coro->args = 0;	523	GvAV (PL_defgv) = coro->args; coro->args = 0;
507		524
508	Zero (&myop, 1, LOGOP);	525	Zero (&myop, 1, LOGOP);
509	myop.op_next = Nullop;	526	myop.op_next = Nullop;
510	myop.op_flags = OPf_WANT_VOID;	527	myop.op_flags = OPf_WANT_VOID;
511		528
512	PL_op = (OP *)&myop;
513
514	PUSHMARK (SP);	529	PUSHMARK (SP);
515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	530	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516	PUTBACK;	531	PUTBACK;
		532	PL_op = (OP *)&myop;
517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	533	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518	SPAGAIN;	534	SPAGAIN;
519	}	535	}
520		536
521	ENTER; /* necessary e.g. for dounwind */	537	ENTER; /* necessary e.g. for dounwind */
…		…
529	SvREFCNT_dec (coro_mortal);	545	SvREFCNT_dec (coro_mortal);
530	coro_mortal = 0;	546	coro_mortal = 0;
531	}	547	}
532	}	548	}
533		549
		550	/* inject a fake call to Coro::State::_cctx_init into the execution */
534	static void NOINLINE	551	static void NOINLINE
535	prepare_cctx (coro_cctx *cctx)	552	prepare_cctx (coro_cctx *cctx)
536	{	553	{
537	dSP;	554	dSP;
538	LOGOP myop;	555	LOGOP myop;
539		556
540	Zero (&myop, 1, LOGOP);	557	Zero (&myop, 1, LOGOP);
541	myop.op_next = PL_op;	558	myop.op_next = PL_op;
542	myop.op_flags = OPf_WANT_VOID;	559	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
543
544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545		560
546	PUSHMARK (SP);	561	PUSHMARK (SP);
		562	EXTEND (SP, 2);
		563	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	564	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548	PUTBACK;	565	PUTBACK;
		566	PL_op = (OP *)&myop;
549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550	SPAGAIN;	568	SPAGAIN;
551	}	569	}
552		570
553	static void	571	static void
554	coro_run (void *arg)	572	coro_run (void *arg)
555	{	573	{
556	/* coro_run is the alternative epilogue of transfer() */	574	/* coro_run is the alternative tail of transfer(), so unlock here. */
557	UNLOCK;	575	UNLOCK;
558		576
559	/*	577	/*
560	* this is a _very_ stripped down perl interpreter ;)	578	* this is a _very_ stripped down perl interpreter ;)
561	*/	579	*/
…		…
563		581
564	/* inject call to cctx_init */	582	/* inject call to cctx_init */
565	prepare_cctx ((coro_cctx *)arg);	583	prepare_cctx ((coro_cctx *)arg);
566		584
567	/* somebody will hit me for both perl_run and PL_restartop */	585	/* somebody will hit me for both perl_run and PL_restartop */
		586	PL_restartop = PL_op;
568	perl_run (PL_curinterp);	587	perl_run (PL_curinterp);
569		588
570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	589	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571	abort ();	590	abort ();
572	}	591	}
…		…
576	{	595	{
577	coro_cctx *cctx;	596	coro_cctx *cctx;
578		597
579	++cctx_count;	598	++cctx_count;
580		599
581	New (0, cctx, 1, coro_cctx);	600	Newz (0, cctx, 1, coro_cctx);
582		601
583	#if HAVE_MMAP	602	#if HAVE_MMAP
584		603
585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	604	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
586	/* mmap suppsedly does allocate-on-write for us */	605	/* mmap supposedly does allocate-on-write for us */
587	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	606	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588		607
589	if (cctx->sptr == (void *)-1)	608	if (cctx->sptr == (void *)-1)
590	{	609	{
591	perror ("FATAL: unable to mmap stack for coroutine");	610	perror ("FATAL: unable to mmap stack for coroutine");
…		…
681	cctx_first = cctx;	700	cctx_first = cctx;
682	}	701	}
683		702
684	/* never call directly, always through the coro_state_transfer global variable */	703	/* never call directly, always through the coro_state_transfer global variable */
685	static void NOINLINE	704	static void NOINLINE
686	transfer (struct coro prev, struct coro next, int flags)	705	transfer (struct coro prev, struct coro next)
687	{	706	{
688	dSTACKLEVEL;	707	dSTACKLEVEL;
689		708
690	/* sometimes transfer is only called to set idle_sp */	709	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	710	if (!next)
		711	{
692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	712	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		713	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		714	}
693	else if (prev != next)	715	else if (prev != next)
694	{	716	{
695	coro_cctx *prev__cctx;	717	coro_cctx *prev__cctx;
696		718
697	if (prev->flags & CF_NEW)	719	if (prev->flags & CF_NEW)
…		…
713	prev->flags &= ~CF_RUNNING;	735	prev->flags &= ~CF_RUNNING;
714	next->flags \|= CF_RUNNING;	736	next->flags \|= CF_RUNNING;
715		737
716	LOCK;	738	LOCK;
717		739
718	if (next->mainstack)	740	if (next->flags & CF_NEW)
719	{	741	{
720	/* coroutine already started */	742	/* need to start coroutine */
721	SAVE (prev, flags);	743	next->flags &= ~CF_NEW;
722	LOAD (next);	744	/* first get rid of the old state */
		745	save_perl (prev);
		746	/* setup coroutine call */
		747	setup_coro (next);
		748	/* need a new stack */
		749	assert (!next->cctx);
723	}	750	}
724	else	751	else
725	{	752	{
726	/* need to start coroutine */	753	/* coroutine already started */
727	assert (next->flags & CF_NEW);	754	save_perl (prev);
728	next->flags &= ~CF_NEW;	755	load_perl (next);
729	/* first get rid of the old state */
730	SAVE (prev, -1);
731	/* setup coroutine call */
732	setup_coro (next);
733	/* need a new stack */
734	assert (!next->stack);
735	}	756	}
736		757
737	prev__cctx = prev->cctx;	758	prev__cctx = prev->cctx;
738		759
739	/* possibly "free" the cctx */	760	/* possibly "free" the cctx */
740	if (prev__cctx->idle_sp == STACKLEVEL && 0)	761	if (prev__cctx->idle_sp == STACKLEVEL)
741	{	762	{
742	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	763	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
743	assert (PL_top_env == prev__cctx->top_env);	764	assert (PL_top_env == prev__cctx->top_env);
744		765
745	prev->cctx = 0;	766	prev->cctx = 0;
…		…
769	}	790	}
770		791
771	struct transfer_args	792	struct transfer_args
772	{	793	{
773	struct coro prev, next;	794	struct coro prev, next;
774	int flags;
775	};	795	};
776		796
777	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
778		798
779	static void	799	static void
780	coro_state_destroy (struct coro *coro)	800	coro_state_destroy (struct coro *coro)
781	{	801	{
782	if (coro->refcnt--)	802	if (coro->refcnt--)
783	return;	803	return;
784		804
785	if (coro->mainstack && coro->mainstack != main_mainstack)	805	if (coro->mainstack && coro->mainstack != main_mainstack)
786	{	806	{
787	struct coro temp;	807	struct coro temp;
		808	Zero (&temp, 1, struct coro);
		809	temp.save = CORO_SAVE_ALL;
788		810
789	if (coro->flags & CF_RUNNING)	811	if (coro->flags & CF_RUNNING)
790	croak ("FATAL: tried to destroy currently running coroutine");	812	croak ("FATAL: tried to destroy currently running coroutine");
791		813
792	SAVE ((&temp), TRANSFER_SAVE_ALL);	814	save_perl (&temp);
793	LOAD (coro);	815	load_perl (coro);
794		816
795	coro_destroy_stacks ();	817	coro_destroy_stacks ();
796		818
797	LOAD ((&temp)); /* this will get rid of defsv etc.. */	819	load_perl (&temp); /* this will get rid of defsv etc.. */
798		820
799	coro->mainstack = 0;	821	coro->mainstack = 0;
800	}	822	}
801		823
802	cctx_destroy (coro->cctx);	824	cctx_destroy (coro->cctx);
…		…
857	assert (mg->mg_type == PERL_MAGIC_ext);	879	assert (mg->mg_type == PERL_MAGIC_ext);
858	return (struct coro *)mg->mg_ptr;	880	return (struct coro *)mg->mg_ptr;
859	}	881	}
860		882
861	static void	883	static void
862	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	884	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
863	{	885	{
864	ta->prev = SvSTATE (prev);	886	ta->prev = SvSTATE (prev_sv);
865	ta->next = SvSTATE (next);	887	ta->next = SvSTATE (next_sv);
866	ta->flags = flags;
867	}	888	}
868		889
869	static void	890	static void
870	api_transfer (SV prev, SV next, int flags)	891	api_transfer (SV prev_sv, SV next_sv)
871	{	892	{
872	struct transfer_args ta;	893	struct transfer_args ta;
873		894
874	prepare_transfer (&ta, prev, next, flags);	895	prepare_transfer (&ta, prev_sv, next_sv);
875	TRANSFER (ta);	896	TRANSFER (ta);
		897	}
		898
		899	static int
		900	api_save (SV *coro_sv, int new_save)
		901	{
		902	struct coro *coro = SvSTATE (coro_sv);
		903	int old_save = coro->save;
		904
		905	if (new_save >= 0)
		906	coro->save = new_save;
		907
		908	return old_save;
876	}	909	}
877		910
878	/ Coro ******************************************************************/	911	/ Coro ******************************************************************/
879		912
880	#define PRIO_MAX 3	913	#define PRIO_MAX 3
…		…
926	coro = SvSTATE (coro_sv);	959	coro = SvSTATE (coro_sv);
927		960
928	if (coro->flags & CF_READY)	961	if (coro->flags & CF_READY)
929	return 0;	962	return 0;
930		963
931	#if 0 /* this is actually harmless */
932	if (coro->flags & CF_RUNNING)
933	croak ("Coro::ready called on currently running coroutine");
934	#endif
935
936	coro->flags \|= CF_READY;	964	coro->flags \|= CF_READY;
937		965
938	LOCK;	966	LOCK;
939	coro_enq (SvREFCNT_inc (coro_sv));	967	coro_enq (SvREFCNT_inc (coro_sv));
940	UNLOCK;	968	UNLOCK;
…		…
943	}	971	}
944		972
945	static int	973	static int
946	api_is_ready (SV *coro_sv)	974	api_is_ready (SV *coro_sv)
947	{	975	{
948	return !!SvSTATE (coro_sv)->flags & CF_READY;	976	return !!(SvSTATE (coro_sv)->flags & CF_READY);
949	}	977	}
950		978
951	static void	979	static void
952	prepare_schedule (struct transfer_args *ta)	980	prepare_schedule (struct transfer_args *ta)
953	{	981	{
…		…
989	assert (!SvROK(prev));//D	1017	assert (!SvROK(prev));//D
990	assert (!SvROK(next));//D	1018	assert (!SvROK(next));//D
991		1019
992	ta->prev = SvSTATE (prev);	1020	ta->prev = SvSTATE (prev);
993	ta->next = SvSTATE (next);	1021	ta->next = SvSTATE (next);
994	ta->flags = TRANSFER_SAVE_ALL;
995		1022
996	assert (ta->flags & CF_READY);	1023	assert (ta->next->flags & CF_READY);
997	ta->next->flags &= ~CF_READY;	1024	ta->next->flags &= ~CF_READY;
998	}	1025	}
999		1026
1000	static void	1027	static void
1001	prepare_cede (struct transfer_args *ta)	1028	prepare_cede (struct transfer_args *ta)
1002	{	1029	{
1003	api_ready (coro_current);	1030	api_ready (coro_current);
1004
1005	prepare_schedule (ta);	1031	prepare_schedule (ta);
		1032	}
		1033
		1034	static int
		1035	prepare_cede_notself (struct transfer_args *ta)
		1036	{
		1037	if (coro_nready)
		1038	{
		1039	SV *prev = SvRV (coro_current);
		1040	prepare_schedule (ta);
		1041	api_ready (prev);
		1042	return 1;
		1043	}
		1044	else
		1045	return 0;
1006	}	1046	}
1007		1047
1008	static void	1048	static void
1009	api_schedule (void)	1049	api_schedule (void)
1010	{	1050	{
…		…
1012		1052
1013	prepare_schedule (&ta);	1053	prepare_schedule (&ta);
1014	TRANSFER (ta);	1054	TRANSFER (ta);
1015	}	1055	}
1016		1056
1017	static void	1057	static int
1018	api_cede (void)	1058	api_cede (void)
1019	{	1059	{
1020	struct transfer_args ta;	1060	struct transfer_args ta;
1021		1061
1022	prepare_cede (&ta);	1062	prepare_cede (&ta);
		1063
		1064	if (ta.prev != ta.next)
		1065	{
1023	TRANSFER (ta);	1066	TRANSFER (ta);
		1067	return 1;
		1068	}
		1069	else
		1070	return 0;
		1071	}
		1072
		1073	static int
		1074	api_cede_notself (void)
		1075	{
		1076	struct transfer_args ta;
		1077
		1078	if (prepare_cede_notself (&ta))
		1079	{
		1080	TRANSFER (ta);
		1081	return 1;
		1082	}
		1083	else
		1084	return 0;
1024	}	1085	}
1025		1086
1026	MODULE = Coro::State PACKAGE = Coro::State	1087	MODULE = Coro::State PACKAGE = Coro::State
1027		1088
1028	PROTOTYPES: DISABLE	1089	PROTOTYPES: DISABLE
…		…
1034	#endif	1095	#endif
1035	BOOT_PAGESIZE;	1096	BOOT_PAGESIZE;
1036		1097
1037	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1098	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1038		1099
1039	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1100	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1040	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1041	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1103	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1104	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1042		1105
1043	main_mainstack = PL_mainstack;	1106	main_mainstack = PL_mainstack;
1044		1107
1045	coroapi.ver = CORO_API_VERSION;	1108	coroapi.ver = CORO_API_VERSION;
1046	coroapi.transfer = api_transfer;	1109	coroapi.transfer = api_transfer;
…		…
1056	HV *hv;	1119	HV *hv;
1057	int i;	1120	int i;
1058		1121
1059	Newz (0, coro, 1, struct coro);	1122	Newz (0, coro, 1, struct coro);
1060	coro->args = newAV ();	1123	coro->args = newAV ();
		1124	coro->save = CORO_SAVE_ALL;
1061	coro->flags = CF_NEW;	1125	coro->flags = CF_NEW;
1062		1126
1063	hv = newHV ();	1127	hv = newHV ();
1064	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1128	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1065	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1129	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1066		1130
1067	for (i = 1; i < items; i++)	1131	for (i = 1; i < items; i++)
1068	av_push (coro->args, newSVsv (ST (i)));	1132	av_push (coro->args, newSVsv (ST (i)));
1069	}	1133	}
1070	OUTPUT:	1134	OUTPUT:
		1135	RETVAL
		1136
		1137	int
		1138	save (SV *coro, int new_save = -1)
		1139	CODE:
		1140	RETVAL = api_save (coro, new_save);
		1141	OUTPUT:
1071	RETVAL	1142	RETVAL
1072		1143
1073	void	1144	void
1074	_set_stacklevel (...)	1145	_set_stacklevel (...)
1075	ALIAS:	1146	ALIAS:
1076	Coro::State::transfer = 1	1147	Coro::State::transfer = 1
1077	Coro::schedule = 2	1148	Coro::schedule = 2
1078	Coro::cede = 3	1149	Coro::cede = 3
1079	Coro::Cont::yield = 4	1150	Coro::cede_notself = 4
1080	CODE:	1151	CODE:
1081	{	1152	{
1082	struct transfer_args ta;	1153	struct transfer_args ta;
1083		1154
1084	switch (ix)	1155	switch (ix)
1085	{	1156	{
1086	case 0:	1157	case 0:
1087	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1158	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1088	ta.next = 0;	1159	ta.next = 0;
1089	ta.flags = TRANSFER_SET_STACKLEVEL;
1090	break;	1160	break;
1091		1161
1092	case 1:	1162	case 1:
1093	if (items != 3)	1163	if (items != 2)
1094	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1164	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1095		1165
1096	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1166	prepare_transfer (&ta, ST (0), ST (1));
1097	break;	1167	break;
1098		1168
1099	case 2:	1169	case 2:
1100	prepare_schedule (&ta);	1170	prepare_schedule (&ta);
1101	break;	1171	break;
…		…
1103	case 3:	1173	case 3:
1104	prepare_cede (&ta);	1174	prepare_cede (&ta);
1105	break;	1175	break;
1106		1176
1107	case 4:	1177	case 4:
1108	{	1178	if (!prepare_cede_notself (&ta))
1109	SV *yieldstack;	1179	XSRETURN_EMPTY;
1110	SV *sv;
1111	AV *defav = GvAV (PL_defgv);
1112		1180
1113	yieldstack = *hv_fetch (
1114	(HV *)SvRV (coro_current),
1115	"yieldstack", sizeof ("yieldstack") - 1,
1116	0
1117	);
1118
1119	/* set up @_ -- ugly */
1120	av_clear (defav);
1121	av_fill (defav, items - 1);
1122	while (items--)
1123	av_store (defav, items, SvREFCNT_inc (ST(items)));
1124
1125	sv = av_pop ((AV *)SvRV (yieldstack));
1126	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1127	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1128	ta.flags = 0;
1129	SvREFCNT_dec (sv);
1130	}
1131	break;	1181	break;
1132
1133	}	1182	}
1134		1183
		1184	BARRIER;
1135	TRANSFER (ta);	1185	TRANSFER (ta);
1136	}	1186	}
1137		1187
1138	void	1188	void
1139	_clone_state_from (SV dst, SV src)	1189	_clone_state_from (SV dst, SV src)
…		…
1190	coro_ready[i] = newAV ();	1240	coro_ready[i] = newAV ();
1191		1241
1192	{	1242	{
1193	SV *sv = perl_get_sv("Coro::API", 1);	1243	SV *sv = perl_get_sv("Coro::API", 1);
1194		1244
1195	coroapi.schedule = api_schedule;	1245	coroapi.schedule = api_schedule;
		1246	coroapi.save = api_save;
1196	coroapi.cede = api_cede;	1247	coroapi.cede = api_cede;
		1248	coroapi.cede_notself = api_cede_notself;
1197	coroapi.ready = api_ready;	1249	coroapi.ready = api_ready;
1198	coroapi.is_ready = api_is_ready;	1250	coroapi.is_ready = api_is_ready;
1199	coroapi.nready = &coro_nready;	1251	coroapi.nready = &coro_nready;
1200	coroapi.current = coro_current;	1252	coroapi.current = coro_current;
1201		1253
1202	GCoroAPI = &coroapi;	1254	GCoroAPI = &coroapi;
1203	sv_setiv (sv, (IV)&coroapi);	1255	sv_setiv (sv, (IV)&coroapi);
1204	SvREADONLY_on (sv);	1256	SvREADONLY_on (sv);
1205	}	1257	}
1206	}	1258	}
		1259
		1260	void
		1261	_set_current (SV *current)
		1262	PROTOTYPE: $
		1263	CODE:
		1264	SvREFCNT_dec (SvRV (coro_current));
		1265	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1207		1266
1208	int	1267	int
1209	prio (Coro::State coro, int newprio = 0)	1268	prio (Coro::State coro, int newprio = 0)
1210	ALIAS:	1269	ALIAS:
1211	nice = 1	1270	nice = 1
…		…
1214	RETVAL = coro->prio;	1273	RETVAL = coro->prio;
1215		1274
1216	if (items > 1)	1275	if (items > 1)
1217	{	1276	{
1218	if (ix)	1277	if (ix)
1219	newprio += coro->prio;	1278	newprio = coro->prio - newprio;
1220		1279
1221	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1280	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1222	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1281	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1223		1282
1224	coro->prio = newprio;	1283	coro->prio = newprio;
1225	}	1284	}
1226	}	1285	}
		1286	OUTPUT:
		1287	RETVAL
1227		1288
1228	SV *	1289	SV *
1229	ready (SV *self)	1290	ready (SV *self)
1230	PROTOTYPE: $	1291	PROTOTYPE: $
1231	CODE:	1292	CODE:
…		…
1247	CODE:	1308	CODE:
1248	RETVAL = coro_nready;	1309	RETVAL = coro_nready;
1249	OUTPUT:	1310	OUTPUT:
1250	RETVAL	1311	RETVAL
1251		1312
1252	void
1253	_set_current (SV *current)
1254	PROTOTYPE: $
1255	CODE:
1256	SvREFCNT_dec (SvRV (coro_current));
1257	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1258
1259	MODULE = Coro::State PACKAGE = Coro::AIO	1313	MODULE = Coro::State PACKAGE = Coro::AIO
1260		1314
1261	SV *	1315	SV *
1262	_get_state ()	1316	_get_state ()
1263	CODE:	1317	CODE:
1264	{	1318	{
1265	struct {	1319	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		1320
		1321	RETVAL = newSV (sizeof (struct io_state));
		1322	data = (struct io_state *)SvPVX (RETVAL);
		1323	SvCUR_set (RETVAL, sizeof (struct io_state));
		1324	SvPOK_only (RETVAL);
		1325
1272	data.errorno = errno;	1326	data->errorno = errno;
1273	data.laststype = PL_laststype;	1327	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1328	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1329	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1330	}
1279	OUTPUT:	1331	OUTPUT:
1280	RETVAL	1332	RETVAL
1281		1333
1282	void	1334	void
1283	_set_state (char *data_)	1335	_set_state (char *data_)
1284	PROTOTYPE: $	1336	PROTOTYPE: $
1285	CODE:	1337	CODE:
1286	{	1338	{
1287	struct {	1339	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1340
1294	errno = data->errorno;	1341	errno = data->errorno;
1295	PL_laststype = data->laststype;	1342	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1343	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1344	PL_statcache = data->statcache;
1298	}	1345	}
		1346

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Comparing Coro/Coro/State.xs (file contents): Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC vs. Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC