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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 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
…		…
118	/* the stack */	137	/* the stack */
119	void *sptr;	138	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
121		140
122	/* cpu state */	141	/* cpu state */
123	void idle_sp; / sp of top-level transfer/schedule/cede call */	142	void idle_sp; / sp of top-level transfer/schedule/cede call */
		143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
124	JMPENV *top_env;	144	JMPENV *top_env;
125	coro_context cctx;	145	coro_context cctx;
126		146
127	int inuse;	147	int inuse;
128		148
…		…
143	coro_cctx *cctx;	163	coro_cctx *cctx;
144		164
145	/* data associated with this coroutine (initial args) */	165	/* data associated with this coroutine (initial args) */
146	AV *args;	166	AV *args;
147	int refcnt;	167	int refcnt;
148	int flags;	168	int save; /* CORO_SAVE flags */
		169	int flags; /* CF_ flags */
149		170
150	/* optionally saved, might be zero */	171	/* optionally saved, might be zero */
151	AV *defav;	172	AV defav; / @_ */
152	SV *defsv;	173	SV defsv; / $_ */
153	SV *errsv;	174	SV errsv; / $@ */
		175	SV irssv; / $/ */
		176	SV irssv_sv; / real $/ cache */
154		177
155	#define VAR(name,type) type name;	178	#define VAR(name,type) type name;
156	# include "state.h"	179	# include "state.h"
157	#undef VAR	180	#undef VAR
158		181
…		…
244		267
245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247	else	270	else
248	{	271	{
249	#if 0	272	#if PREFER_PERL_FUNCTIONS
250	/* this is probably cleaner, but also slower? */	273	/* this is probably cleaner, but also slower? */
251	CV *cp = Perl_cv_clone (cv);	274	CV *cp = Perl_cv_clone (cv);
252	CvPADLIST (cv) = CvPADLIST (cp);	275	CvPADLIST (cv) = CvPADLIST (cp);
253	CvPADLIST (cp) = 0;	276	CvPADLIST (cp) = 0;
254	SvREFCNT_dec (cp);	277	SvREFCNT_dec (cp);
…		…
281	}	304	}
282		305
283	#define SB do {	306	#define SB do {
284	#define SE } while (0)	307	#define SE } while (0)
285		308
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	309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
290		310
291	static void	311	static void
292	load_state (Coro__State c)	312	load_perl (Coro__State c)
293	{	313	{
294	#define VAR(name,type) PL_ ## name = c->name;	314	#define VAR(name,type) PL_ ## name = c->name;
295	# include "state.h"	315	# include "state.h"
296	#undef VAR	316	#undef VAR
297		317
298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		321	if (c->irssv)
		322	{
		323	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		324	SvREFCNT_dec (c->irssv);
		325	else
		326	{
		327	REPLACE_SV (PL_rs, c->irssv);
		328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		329	sv_setsv (c->irssv_sv, PL_rs);
		330	}
		331	}
301		332
302	{	333	{
303	dSP;	334	dSP;
304	CV *cv;	335	CV *cv;
305		336
…		…
314	PUTBACK;	345	PUTBACK;
315	}	346	}
316	}	347	}
317		348
318	static void	349	static void
319	save_state (Coro__State c, int flags)	350	save_perl (Coro__State c)
320	{	351	{
321	{	352	{
322	dSP;	353	dSP;
323	I32 cxix = cxstack_ix;	354	I32 cxix = cxstack_ix;
324	PERL_CONTEXT *ccstk = cxstack;	355	PERL_CONTEXT *ccstk = cxstack;
…		…
327	/*	358	/*
328	* the worst thing you can imagine happens first - we have to save	359	* the worst thing you can imagine happens first - we have to save
329	* (and reinitialize) all cv's in the whole callchain :(	360	* (and reinitialize) all cv's in the whole callchain :(
330	*/	361	*/
331		362
		363	EXTEND (SP, 3 + 1);
332	PUSHs (Nullsv);	364	PUSHs (Nullsv);
333	/* this loop was inspired by pp_caller */	365	/* this loop was inspired by pp_caller */
334	for (;;)	366	for (;;)
335	{	367	{
336	while (cxix >= 0)	368	while (cxix >= 0)
…		…
342	CV *cv = cx->blk_sub.cv;	374	CV *cv = cx->blk_sub.cv;
343		375
344	if (CvDEPTH (cv))	376	if (CvDEPTH (cv))
345	{	377	{
346	EXTEND (SP, 3);	378	EXTEND (SP, 3);
347
348	PUSHs ((SV *)CvPADLIST (cv));	379	PUSHs ((SV *)CvPADLIST (cv));
349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
350	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
351		382
352	CvDEPTH (cv) = 0;	383	CvDEPTH (cv) = 0;
353	get_padlist (cv);	384	get_padlist (cv);
354	}	385	}
355	}	386	}
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	}	387	}
365		388
366	if (top_si->si_type == PERLSI_MAIN)	389	if (top_si->si_type == PERLSI_MAIN)
367	break;	390	break;
368		391
…		…
372	}	395	}
373		396
374	PUTBACK;	397	PUTBACK;
375	}	398	}
376		399
377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	400	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;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
380		404
381	#define VAR(name,type)c->name = PL_ ## name;	405	#define VAR(name,type)c->name = PL_ ## name;
382	# include "state.h"	406	# include "state.h"
383	#undef VAR	407	#undef VAR
384	}	408	}
…		…
387	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
388	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
389	* on the (sometimes correct) assumption that coroutines do	413	* on the (sometimes correct) assumption that coroutines do
390	* not usually need a lot of stackspace.	414	* not usually need a lot of stackspace.
391	*/	415	*/
		416	#if PREFER_PERL_FUNCTIONS
		417	# define coro_init_stacks init_stacks
		418	#else
392	static void	419	static void
393	coro_init_stacks ()	420	coro_init_stacks ()
394	{	421	{
395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
396	PL_curstackinfo->si_type = PERLSI_MAIN;	423	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
426	New(54,PL_retstack,16,OP*);	453	New(54,PL_retstack,16,OP*);
427	PL_retstack_ix = 0;	454	PL_retstack_ix = 0;
428	PL_retstack_max = 16;	455	PL_retstack_max = 16;
429	#endif	456	#endif
430	}	457	}
		458	#endif
431		459
432	/*	460	/*
433	* destroy the stacks, the callchain etc...	461	* destroy the stacks, the callchain etc...
434	*/	462	*/
435	static void	463	static void
436	coro_destroy_stacks ()	464	coro_destroy_stacks ()
437	{	465	{
438	if (!IN_DESTRUCT)	466	if (!IN_DESTRUCT)
439	{	467	{
440	/* is this ugly, I ask? */	468	/* restore all saved variables and stuff */
441	LEAVE_SCOPE (0);	469	LEAVE_SCOPE (0);
		470	assert (PL_tmps_floor == -1);
442		471
443	/* sure it is, but more important: is it correct?? :/ */	472	/* free all temporaries */
444	FREETMPS;	473	FREETMPS;
		474	assert (PL_tmps_ix == -1);
445		475
446	/POPSTACK_TO (PL_mainstack);//D//use/	476	POPSTACK_TO (PL_mainstack);
447	}	477	}
448		478
449	while (PL_curstackinfo->si_next)	479	while (PL_curstackinfo->si_next)
450	PL_curstackinfo = PL_curstackinfo->si_next;	480	PL_curstackinfo = PL_curstackinfo->si_next;
451		481
452	while (PL_curstackinfo)	482	while (PL_curstackinfo)
453	{	483	{
454	PERL_SI *p = PL_curstackinfo->si_prev;	484	PERL_SI *p = PL_curstackinfo->si_prev;
455		485
456	{ /D//remove/
457	dSP;
458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459	PUTBACK; /* possibly superfluous */
460	}
461
462	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
463	{
464	dounwind (-1);/D//remove/
465	SvREFCNT_dec (PL_curstackinfo->si_stack);	487	SvREFCNT_dec (PL_curstackinfo->si_stack);
466	}
467		488
468	Safefree (PL_curstackinfo->si_cxstack);	489	Safefree (PL_curstackinfo->si_cxstack);
469	Safefree (PL_curstackinfo);	490	Safefree (PL_curstackinfo);
470	PL_curstackinfo = p;	491	PL_curstackinfo = p;
471	}	492	}
…		…
497		518
498	{	519	{
499	dSP;	520	dSP;
500	LOGOP myop;	521	LOGOP myop;
501		522
502	/* I have no idea why this is needed, but it is */
503	PUSHMARK (SP);
504
505	SvREFCNT_dec (GvAV (PL_defgv));	523	SvREFCNT_dec (GvAV (PL_defgv));
506	GvAV (PL_defgv) = coro->args; coro->args = 0;	524	GvAV (PL_defgv) = coro->args; coro->args = 0;
507		525
508	Zero (&myop, 1, LOGOP);	526	Zero (&myop, 1, LOGOP);
509	myop.op_next = Nullop;	527	myop.op_next = Nullop;
510	myop.op_flags = OPf_WANT_VOID;	528	myop.op_flags = OPf_WANT_VOID;
511		529
512	PL_op = (OP *)&myop;
513
514	PUSHMARK (SP);	530	PUSHMARK (SP);
515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516	PUTBACK;	532	PUTBACK;
		533	PL_op = (OP *)&myop;
517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518	SPAGAIN;	535	SPAGAIN;
519	}	536	}
520		537
521	ENTER; /* necessary e.g. for dounwind */	538	ENTER; /* necessary e.g. for dounwind */
…		…
529	SvREFCNT_dec (coro_mortal);	546	SvREFCNT_dec (coro_mortal);
530	coro_mortal = 0;	547	coro_mortal = 0;
531	}	548	}
532	}	549	}
533		550
		551	/* inject a fake call to Coro::State::_cctx_init into the execution */
534	static void NOINLINE	552	static void NOINLINE
535	prepare_cctx (coro_cctx *cctx)	553	prepare_cctx (coro_cctx *cctx)
536	{	554	{
537	dSP;	555	dSP;
538	LOGOP myop;	556	LOGOP myop;
539		557
540	Zero (&myop, 1, LOGOP);	558	Zero (&myop, 1, LOGOP);
541	myop.op_next = PL_op;	559	myop.op_next = PL_op;
542	myop.op_flags = OPf_WANT_VOID;	560	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
543
544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545		561
546	PUSHMARK (SP);	562	PUSHMARK (SP);
		563	EXTEND (SP, 2);
		564	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	565	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548	PUTBACK;	566	PUTBACK;
		567	PL_op = (OP *)&myop;
549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550	SPAGAIN;	569	SPAGAIN;
551	}	570	}
552		571
553	static void	572	static void
554	coro_run (void *arg)	573	coro_run (void *arg)
555	{	574	{
556	/* coro_run is the alternative epilogue of transfer() */	575	/* coro_run is the alternative tail of transfer(), so unlock here. */
557	UNLOCK;	576	UNLOCK;
558		577
559	/*	578	/*
560	* this is a _very_ stripped down perl interpreter ;)	579	* this is a _very_ stripped down perl interpreter ;)
561	*/	580	*/
…		…
563		582
564	/* inject call to cctx_init */	583	/* inject call to cctx_init */
565	prepare_cctx ((coro_cctx *)arg);	584	prepare_cctx ((coro_cctx *)arg);
566		585
567	/* somebody will hit me for both perl_run and PL_restartop */	586	/* somebody will hit me for both perl_run and PL_restartop */
		587	PL_restartop = PL_op;
568	perl_run (PL_curinterp);	588	perl_run (PL_curinterp);
569		589
570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571	abort ();	591	abort ();
572	}	592	}
…		…
576	{	596	{
577	coro_cctx *cctx;	597	coro_cctx *cctx;
578		598
579	++cctx_count;	599	++cctx_count;
580		600
581	New (0, cctx, 1, coro_cctx);	601	Newz (0, cctx, 1, coro_cctx);
582		602
583	#if HAVE_MMAP	603	#if HAVE_MMAP
584		604
585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
586	/* mmap suppsedly does allocate-on-write for us */	606	/* 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);	607	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588		608
589	if (cctx->sptr == (void *)-1)	609	if (cctx->sptr == (void *)-1)
590	{	610	{
591	perror ("FATAL: unable to mmap stack for coroutine");	611	perror ("FATAL: unable to mmap stack for coroutine");
…		…
681	cctx_first = cctx;	701	cctx_first = cctx;
682	}	702	}
683		703
684	/* never call directly, always through the coro_state_transfer global variable */	704	/* never call directly, always through the coro_state_transfer global variable */
685	static void NOINLINE	705	static void NOINLINE
686	transfer (struct coro prev, struct coro next, int flags)	706	transfer (struct coro prev, struct coro next)
687	{	707	{
688	dSTACKLEVEL;	708	dSTACKLEVEL;
689		709
690	/* sometimes transfer is only called to set idle_sp */	710	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	711	if (!next)
		712	{
692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	713	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		714	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		715	}
693	else if (prev != next)	716	else if (prev != next)
694	{	717	{
695	coro_cctx *prev__cctx;	718	coro_cctx *prev__cctx;
696		719
697	if (prev->flags & CF_NEW)	720	if (prev->flags & CF_NEW)
…		…
718	if (next->flags & CF_NEW)	741	if (next->flags & CF_NEW)
719	{	742	{
720	/* need to start coroutine */	743	/* need to start coroutine */
721	next->flags &= ~CF_NEW;	744	next->flags &= ~CF_NEW;
722	/* first get rid of the old state */	745	/* first get rid of the old state */
723	SAVE (prev, -1);	746	save_perl (prev);
724	/* setup coroutine call */	747	/* setup coroutine call */
725	setup_coro (next);	748	setup_coro (next);
726	/* need a new stack */	749	/* need a new stack */
727	assert (!next->stack);	750	assert (!next->cctx);
728	}	751	}
729	else	752	else
730	{	753	{
731	/* coroutine already started */	754	/* coroutine already started */
732	SAVE (prev, flags);	755	save_perl (prev);
733	LOAD (next);	756	load_perl (next);
734	}	757	}
735		758
736	prev__cctx = prev->cctx;	759	prev__cctx = prev->cctx;
737		760
738	/* possibly "free" the cctx */	761	/* possibly "free" the cctx */
739	if (prev__cctx->idle_sp == STACKLEVEL)	762	if (prev__cctx->idle_sp == STACKLEVEL)
740	{	763	{
741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	764	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
742	assert (PL_top_env == prev__cctx->top_env);	765	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
743		766
744	prev->cctx = 0;	767	prev->cctx = 0;
745		768
746	cctx_put (prev__cctx);	769	cctx_put (prev__cctx);
747	prev__cctx->inuse = 0;	770	prev__cctx->inuse = 0;
…		…
768	}	791	}
769		792
770	struct transfer_args	793	struct transfer_args
771	{	794	{
772	struct coro prev, next;	795	struct coro prev, next;
773	int flags;
774	};	796	};
775		797
776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
777		799
778	static void	800	static void
779	coro_state_destroy (struct coro *coro)	801	coro_state_destroy (struct coro *coro)
780	{	802	{
781	if (coro->refcnt--)	803	if (coro->refcnt--)
782	return;	804	return;
783		805
784	if (coro->mainstack && coro->mainstack != main_mainstack)	806	if (coro->mainstack && coro->mainstack != main_mainstack)
785	{	807	{
786	struct coro temp;	808	struct coro temp;
		809	Zero (&temp, 1, struct coro);
		810	temp.save = CORO_SAVE_ALL;
787		811
788	if (coro->flags & CF_RUNNING)	812	if (coro->flags & CF_RUNNING)
789	croak ("FATAL: tried to destroy currently running coroutine");	813	croak ("FATAL: tried to destroy currently running coroutine");
790		814
791	SAVE ((&temp), TRANSFER_SAVE_ALL);	815	save_perl (&temp);
792	LOAD (coro);	816	load_perl (coro);
793		817
794	coro_destroy_stacks ();	818	coro_destroy_stacks ();
795		819
796	LOAD ((&temp)); /* this will get rid of defsv etc.. */	820	load_perl (&temp); /* this will get rid of defsv etc.. */
797		821
798	coro->mainstack = 0;	822	coro->mainstack = 0;
799	}	823	}
800		824
801	cctx_destroy (coro->cctx);	825	cctx_destroy (coro->cctx);
…		…
856	assert (mg->mg_type == PERL_MAGIC_ext);	880	assert (mg->mg_type == PERL_MAGIC_ext);
857	return (struct coro *)mg->mg_ptr;	881	return (struct coro *)mg->mg_ptr;
858	}	882	}
859		883
860	static void	884	static void
861	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	885	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
862	{	886	{
863	ta->prev = SvSTATE (prev);	887	ta->prev = SvSTATE (prev_sv);
864	ta->next = SvSTATE (next);	888	ta->next = SvSTATE (next_sv);
865	ta->flags = flags;
866	}	889	}
867		890
868	static void	891	static void
869	api_transfer (SV prev, SV next, int flags)	892	api_transfer (SV prev_sv, SV next_sv)
870	{	893	{
871	struct transfer_args ta;	894	struct transfer_args ta;
872		895
873	prepare_transfer (&ta, prev, next, flags);	896	prepare_transfer (&ta, prev_sv, next_sv);
874	TRANSFER (ta);	897	TRANSFER (ta);
		898	}
		899
		900	static int
		901	api_save (SV *coro_sv, int new_save)
		902	{
		903	struct coro *coro = SvSTATE (coro_sv);
		904	int old_save = coro->save;
		905
		906	if (new_save >= 0)
		907	coro->save = new_save;
		908
		909	return old_save;
875	}	910	}
876		911
877	/ Coro ******************************************************************/	912	/ Coro ******************************************************************/
878		913
879	#define PRIO_MAX 3	914	#define PRIO_MAX 3
…		…
925	coro = SvSTATE (coro_sv);	960	coro = SvSTATE (coro_sv);
926		961
927	if (coro->flags & CF_READY)	962	if (coro->flags & CF_READY)
928	return 0;	963	return 0;
929		964
930	#if 0 /* this is actually harmless */
931	if (coro->flags & CF_RUNNING)
932	croak ("Coro::ready called on currently running coroutine");
933	#endif
934
935	coro->flags \|= CF_READY;	965	coro->flags \|= CF_READY;
936		966
937	LOCK;	967	LOCK;
938	coro_enq (SvREFCNT_inc (coro_sv));	968	coro_enq (SvREFCNT_inc (coro_sv));
939	UNLOCK;	969	UNLOCK;
…		…
942	}	972	}
943		973
944	static int	974	static int
945	api_is_ready (SV *coro_sv)	975	api_is_ready (SV *coro_sv)
946	{	976	{
947	return !!SvSTATE (coro_sv)->flags & CF_READY;	977	return !!(SvSTATE (coro_sv)->flags & CF_READY);
948	}	978	}
949		979
950	static void	980	static void
951	prepare_schedule (struct transfer_args *ta)	981	prepare_schedule (struct transfer_args *ta)
952	{	982	{
…		…
988	assert (!SvROK(prev));//D	1018	assert (!SvROK(prev));//D
989	assert (!SvROK(next));//D	1019	assert (!SvROK(next));//D
990		1020
991	ta->prev = SvSTATE (prev);	1021	ta->prev = SvSTATE (prev);
992	ta->next = SvSTATE (next);	1022	ta->next = SvSTATE (next);
993	ta->flags = TRANSFER_SAVE_ALL;
994		1023
995	assert (ta->flags & CF_READY);	1024	assert (ta->next->flags & CF_READY);
996	ta->next->flags &= ~CF_READY;	1025	ta->next->flags &= ~CF_READY;
997	}	1026	}
998		1027
999	static void	1028	static void
1000	prepare_cede (struct transfer_args *ta)	1029	prepare_cede (struct transfer_args *ta)
1001	{	1030	{
1002	api_ready (coro_current);	1031	api_ready (coro_current);
1003
1004	prepare_schedule (ta);	1032	prepare_schedule (ta);
		1033	}
		1034
		1035	static int
		1036	prepare_cede_notself (struct transfer_args *ta)
		1037	{
		1038	if (coro_nready)
		1039	{
		1040	SV *prev = SvRV (coro_current);
		1041	prepare_schedule (ta);
		1042	api_ready (prev);
		1043	return 1;
		1044	}
		1045	else
		1046	return 0;
1005	}	1047	}
1006		1048
1007	static void	1049	static void
1008	api_schedule (void)	1050	api_schedule (void)
1009	{	1051	{
…		…
1011		1053
1012	prepare_schedule (&ta);	1054	prepare_schedule (&ta);
1013	TRANSFER (ta);	1055	TRANSFER (ta);
1014	}	1056	}
1015		1057
1016	static void	1058	static int
1017	api_cede (void)	1059	api_cede (void)
1018	{	1060	{
1019	struct transfer_args ta;	1061	struct transfer_args ta;
1020		1062
1021	prepare_cede (&ta);	1063	prepare_cede (&ta);
		1064
		1065	if (ta.prev != ta.next)
		1066	{
1022	TRANSFER (ta);	1067	TRANSFER (ta);
		1068	return 1;
		1069	}
		1070	else
		1071	return 0;
		1072	}
		1073
		1074	static int
		1075	api_cede_notself (void)
		1076	{
		1077	struct transfer_args ta;
		1078
		1079	if (prepare_cede_notself (&ta))
		1080	{
		1081	TRANSFER (ta);
		1082	return 1;
		1083	}
		1084	else
		1085	return 0;
1023	}	1086	}
1024		1087
1025	MODULE = Coro::State PACKAGE = Coro::State	1088	MODULE = Coro::State PACKAGE = Coro::State
1026		1089
1027	PROTOTYPES: DISABLE	1090	PROTOTYPES: DISABLE
…		…
1033	#endif	1096	#endif
1034	BOOT_PAGESIZE;	1097	BOOT_PAGESIZE;
1035		1098
1036	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1037		1100
1038	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1039	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1040	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1041		1106
1042	main_mainstack = PL_mainstack;	1107	main_mainstack = PL_mainstack;
1043		1108
1044	coroapi.ver = CORO_API_VERSION;	1109	coroapi.ver = CORO_API_VERSION;
1045	coroapi.transfer = api_transfer;	1110	coroapi.transfer = api_transfer;
…		…
1055	HV *hv;	1120	HV *hv;
1056	int i;	1121	int i;
1057		1122
1058	Newz (0, coro, 1, struct coro);	1123	Newz (0, coro, 1, struct coro);
1059	coro->args = newAV ();	1124	coro->args = newAV ();
		1125	coro->save = CORO_SAVE_ALL;
1060	coro->flags = CF_NEW;	1126	coro->flags = CF_NEW;
1061		1127
1062	hv = newHV ();	1128	hv = newHV ();
1063	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1129	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1065		1131
1066	for (i = 1; i < items; i++)	1132	for (i = 1; i < items; i++)
1067	av_push (coro->args, newSVsv (ST (i)));	1133	av_push (coro->args, newSVsv (ST (i)));
1068	}	1134	}
1069	OUTPUT:	1135	OUTPUT:
		1136	RETVAL
		1137
		1138	int
		1139	save (SV *coro, int new_save = -1)
		1140	CODE:
		1141	RETVAL = api_save (coro, new_save);
		1142	OUTPUT:
1070	RETVAL	1143	RETVAL
1071		1144
1072	void	1145	void
1073	_set_stacklevel (...)	1146	_set_stacklevel (...)
1074	ALIAS:	1147	ALIAS:
1075	Coro::State::transfer = 1	1148	Coro::State::transfer = 1
1076	Coro::schedule = 2	1149	Coro::schedule = 2
1077	Coro::cede = 3	1150	Coro::cede = 3
		1151	Coro::cede_notself = 4
1078	CODE:	1152	CODE:
1079	{	1153	{
1080	struct transfer_args ta;	1154	struct transfer_args ta;
1081		1155
1082	switch (ix)	1156	switch (ix)
1083	{	1157	{
1084	case 0:	1158	case 0:
1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1159	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1086	ta.next = 0;	1160	ta.next = 0;
1087	ta.flags = TRANSFER_SET_STACKLEVEL;
1088	break;	1161	break;
1089		1162
1090	case 1:	1163	case 1:
1091	if (items != 3)	1164	if (items != 2)
1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1165	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1093		1166
1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1167	prepare_transfer (&ta, ST (0), ST (1));
1095	break;	1168	break;
1096		1169
1097	case 2:	1170	case 2:
1098	prepare_schedule (&ta);	1171	prepare_schedule (&ta);
1099	break;	1172	break;
1100		1173
1101	case 3:	1174	case 3:
1102	prepare_cede (&ta);	1175	prepare_cede (&ta);
1103	break;	1176	break;
		1177
		1178	case 4:
		1179	if (!prepare_cede_notself (&ta))
		1180	XSRETURN_EMPTY;
		1181
		1182	break;
1104	}	1183	}
1105		1184
		1185	BARRIER;
1106	TRANSFER (ta);	1186	TRANSFER (ta);
1107	}	1187	}
1108		1188
1109	void	1189	void
1110	_clone_state_from (SV dst, SV src)	1190	_clone_state_from (SV dst, SV src)
…		…
1161	coro_ready[i] = newAV ();	1241	coro_ready[i] = newAV ();
1162		1242
1163	{	1243	{
1164	SV *sv = perl_get_sv("Coro::API", 1);	1244	SV *sv = perl_get_sv("Coro::API", 1);
1165		1245
1166	coroapi.schedule = api_schedule;	1246	coroapi.schedule = api_schedule;
		1247	coroapi.save = api_save;
1167	coroapi.cede = api_cede;	1248	coroapi.cede = api_cede;
		1249	coroapi.cede_notself = api_cede_notself;
1168	coroapi.ready = api_ready;	1250	coroapi.ready = api_ready;
1169	coroapi.is_ready = api_is_ready;	1251	coroapi.is_ready = api_is_ready;
1170	coroapi.nready = &coro_nready;	1252	coroapi.nready = &coro_nready;
1171	coroapi.current = coro_current;	1253	coroapi.current = coro_current;
1172		1254
1173	GCoroAPI = &coroapi;	1255	GCoroAPI = &coroapi;
1174	sv_setiv (sv, (IV)&coroapi);	1256	sv_setiv (sv, (IV)&coroapi);
1175	SvREADONLY_on (sv);	1257	SvREADONLY_on (sv);
1176	}	1258	}
1177	}	1259	}
		1260
		1261	void
		1262	_set_current (SV *current)
		1263	PROTOTYPE: $
		1264	CODE:
		1265	SvREFCNT_dec (SvRV (coro_current));
		1266	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1178		1267
1179	int	1268	int
1180	prio (Coro::State coro, int newprio = 0)	1269	prio (Coro::State coro, int newprio = 0)
1181	ALIAS:	1270	ALIAS:
1182	nice = 1	1271	nice = 1
…		…
1185	RETVAL = coro->prio;	1274	RETVAL = coro->prio;
1186		1275
1187	if (items > 1)	1276	if (items > 1)
1188	{	1277	{
1189	if (ix)	1278	if (ix)
1190	newprio += coro->prio;	1279	newprio = coro->prio - newprio;
1191		1280
1192	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1281	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1193	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1282	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1194		1283
1195	coro->prio = newprio;	1284	coro->prio = newprio;
1196	}	1285	}
1197	}	1286	}
		1287	OUTPUT:
		1288	RETVAL
1198		1289
1199	SV *	1290	SV *
1200	ready (SV *self)	1291	ready (SV *self)
1201	PROTOTYPE: $	1292	PROTOTYPE: $
1202	CODE:	1293	CODE:
…		…
1218	CODE:	1309	CODE:
1219	RETVAL = coro_nready;	1310	RETVAL = coro_nready;
1220	OUTPUT:	1311	OUTPUT:
1221	RETVAL	1312	RETVAL
1222		1313
1223	void
1224	_set_current (SV *current)
1225	PROTOTYPE: $
1226	CODE:
1227	SvREFCNT_dec (SvRV (coro_current));
1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1229
1230	MODULE = Coro::State PACKAGE = Coro::AIO	1314	MODULE = Coro::State PACKAGE = Coro::AIO
1231		1315
1232	SV *	1316	SV *
1233	_get_state ()	1317	_get_state ()
1234	CODE:	1318	CODE:
1235	{	1319	{
1236	struct {	1320	struct io_state *data;
1237	int errorno;
1238	int laststype;
1239	int laststatval;
1240	Stat_t statcache;
1241	} data;
1242		1321
		1322	RETVAL = newSV (sizeof (struct io_state));
		1323	data = (struct io_state *)SvPVX (RETVAL);
		1324	SvCUR_set (RETVAL, sizeof (struct io_state));
		1325	SvPOK_only (RETVAL);
		1326
1243	data.errorno = errno;	1327	data->errorno = errno;
1244	data.laststype = PL_laststype;	1328	data->laststype = PL_laststype;
1245	data.laststatval = PL_laststatval;	1329	data->laststatval = PL_laststatval;
1246	data.statcache = PL_statcache;	1330	data->statcache = PL_statcache;
1247
1248	RETVAL = newSVpvn ((char *)&data, sizeof data);
1249	}	1331	}
1250	OUTPUT:	1332	OUTPUT:
1251	RETVAL	1333	RETVAL
1252		1334
1253	void	1335	void
1254	_set_state (char *data_)	1336	_set_state (char *data_)
1255	PROTOTYPE: $	1337	PROTOTYPE: $
1256	CODE:	1338	CODE:
1257	{	1339	{
1258	struct {	1340	struct io_state data = (void )data_;
1259	int errorno;
1260	int laststype;
1261	int laststatval;
1262	Stat_t statcache;
1263	} data = (void )data_;
1264		1341
1265	errno = data->errorno;	1342	errno = data->errorno;
1266	PL_laststype = data->laststype;	1343	PL_laststype = data->laststype;
1267	PL_laststatval = data->laststatval;	1344	PL_laststatval = data->laststatval;
1268	PL_statcache = data->statcache;	1345	PL_statcache = data->statcache;
1269	}	1346	}
		1347

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Comparing Coro/Coro/State.xs (file contents): Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs. Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC