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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.116 by root, Fri Dec 1 14:01:43 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
…		…
130	int valgrind_id;	149	int valgrind_id;
131	#endif	150	#endif
132	} coro_cctx;	151	} coro_cctx;
133		152
134	enum {	153	enum {
135	CF_RUNNING, /* coroutine is running */	154	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY, /* coroutine is ready */	155	CF_READY = 0x0002, /* coroutine is ready */
		156	CF_NEW = 0x0004, /* ahs never been switched to */
137	};	157	};
138		158
139	/* this is a structure representing a perl-level coroutine */	159	/* this is a structure representing a perl-level coroutine */
140	struct coro {	160	struct coro {
141	/* the c coroutine allocated to this perl coroutine, if any */	161	/* the c coroutine allocated to this perl coroutine, if any */
142	coro_cctx *cctx;	162	coro_cctx *cctx;
143		163
144	/* data associated with this coroutine (initial args) */	164	/* data associated with this coroutine (initial args) */
145	AV *args;	165	AV *args;
146	int refcnt;	166	int refcnt;
147	int flags;	167	int save; /* CORO_SAVE flags */
		168	int flags; /* CF_ flags */
148		169
149	/* optionally saved, might be zero */	170	/* optionally saved, might be zero */
150	AV *defav;	171	AV defav; / @_ */
151	SV *defsv;	172	SV defsv; / $_ */
152	SV *errsv;	173	SV errsv; / $@ */
		174	SV irssv; / $/ */
		175	SV irssv_sv; / real $/ cache */
153		176
154	#define VAR(name,type) type name;	177	#define VAR(name,type) type name;
155	# include "state.h"	178	# include "state.h"
156	#undef VAR	179	#undef VAR
157		180
…		…
243		266
244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	267	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	268	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
246	else	269	else
247	{	270	{
248	#if 0	271	#if PREFER_PERL_FUNCTIONS
249	/* this is probably cleaner, but also slower? */	272	/* this is probably cleaner, but also slower? */
250	CV *cp = Perl_cv_clone (cv);	273	CV *cp = Perl_cv_clone (cv);
251	CvPADLIST (cv) = CvPADLIST (cp);	274	CvPADLIST (cv) = CvPADLIST (cp);
252	CvPADLIST (cp) = 0;	275	CvPADLIST (cp) = 0;
253	SvREFCNT_dec (cp);	276	SvREFCNT_dec (cp);
…		…
280	}	303	}
281		304
282	#define SB do {	305	#define SB do {
283	#define SE } while (0)	306	#define SE } while (0)
284		307
285	#define LOAD(state) load_state((state));
286	#define SAVE(state,flags) save_state((state),(flags));
287
288	#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
289		309
290	static void	310	static void
291	load_state(Coro__State c)	311	load_perl (Coro__State c)
292	{	312	{
293	#define VAR(name,type) PL_ ## name = c->name;	313	#define VAR(name,type) PL_ ## name = c->name;
294	# include "state.h"	314	# include "state.h"
295	#undef VAR	315	#undef VAR
296		316
297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
299	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	}
300		331
301	{	332	{
302	dSP;	333	dSP;
303	CV *cv;	334	CV *cv;
304		335
…		…
313	PUTBACK;	344	PUTBACK;
314	}	345	}
315	}	346	}
316		347
317	static void	348	static void
318	save_state(Coro__State c, int flags)	349	save_perl (Coro__State c)
319	{	350	{
320	{	351	{
321	dSP;	352	dSP;
322	I32 cxix = cxstack_ix;	353	I32 cxix = cxstack_ix;
323	PERL_CONTEXT *ccstk = cxstack;	354	PERL_CONTEXT *ccstk = cxstack;
…		…
326	/*	357	/*
327	* 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
328	* (and reinitialize) all cv's in the whole callchain :(	359	* (and reinitialize) all cv's in the whole callchain :(
329	*/	360	*/
330		361
		362	EXTEND (SP, 3 + 1);
331	PUSHs (Nullsv);	363	PUSHs (Nullsv);
332	/* this loop was inspired by pp_caller */	364	/* this loop was inspired by pp_caller */
333	for (;;)	365	for (;;)
334	{	366	{
335	while (cxix >= 0)	367	while (cxix >= 0)
336	{	368	{
337	PERL_CONTEXT *cx = &ccstk[cxix--];	369	PERL_CONTEXT *cx = &ccstk[cxix--];
338		370
339	if (CxTYPE(cx) == CXt_SUB)	371	if (CxTYPE (cx) == CXt_SUB)
340	{	372	{
341	CV *cv = cx->blk_sub.cv;	373	CV *cv = cx->blk_sub.cv;
342		374
343	if (CvDEPTH (cv))	375	if (CvDEPTH (cv))
344	{	376	{
345	EXTEND (SP, 3);	377	EXTEND (SP, 3);
346
347	PUSHs ((SV *)CvPADLIST(cv));	378	PUSHs ((SV *)CvPADLIST (cv));
348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	379	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
349	PUSHs ((SV *)cv);	380	PUSHs ((SV *)cv);
350		381
351	CvDEPTH (cv) = 0;	382	CvDEPTH (cv) = 0;
352	get_padlist (cv);	383	get_padlist (cv);
353	}	384	}
354	}	385	}
355	#ifdef CXt_FORMAT
356	else if (CxTYPE(cx) == CXt_FORMAT)
357	{
358	/* I never used formats, so how should I know how these are implemented? */
359	/* my bold guess is as a simple, plain sub... */
360	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
361	}
362	#endif
363	}	386	}
364		387
365	if (top_si->si_type == PERLSI_MAIN)	388	if (top_si->si_type == PERLSI_MAIN)
366	break;	389	break;
367		390
…		…
371	}	394	}
372		395
373	PUTBACK;	396	PUTBACK;
374	}	397	}
375		398
376	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;
377	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	400	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
378	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;
379		403
380	#define VAR(name,type)c->name = PL_ ## name;	404	#define VAR(name,type)c->name = PL_ ## name;
381	# include "state.h"	405	# include "state.h"
382	#undef VAR	406	#undef VAR
383	}	407	}
…		…
386	* allocate various perl stacks. This is an exact copy	410	* allocate various perl stacks. This is an exact copy
387	* of perl.c:init_stacks, except that it uses less memory	411	* of perl.c:init_stacks, except that it uses less memory
388	* on the (sometimes correct) assumption that coroutines do	412	* on the (sometimes correct) assumption that coroutines do
389	* not usually need a lot of stackspace.	413	* not usually need a lot of stackspace.
390	*/	414	*/
		415	#if PREFER_PERL_FUNCTIONS
		416	# define coro_init_stacks init_stacks
		417	#else
391	static void	418	static void
392	coro_init_stacks ()	419	coro_init_stacks ()
393	{	420	{
394	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	421	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
395	PL_curstackinfo->si_type = PERLSI_MAIN;	422	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
425	New(54,PL_retstack,16,OP*);	452	New(54,PL_retstack,16,OP*);
426	PL_retstack_ix = 0;	453	PL_retstack_ix = 0;
427	PL_retstack_max = 16;	454	PL_retstack_max = 16;
428	#endif	455	#endif
429	}	456	}
		457	#endif
430		458
431	/*	459	/*
432	* destroy the stacks, the callchain etc...	460	* destroy the stacks, the callchain etc...
433	*/	461	*/
434	static void	462	static void
435	coro_destroy_stacks ()	463	coro_destroy_stacks ()
436	{	464	{
437	if (!IN_DESTRUCT)	465	if (!IN_DESTRUCT)
438	{	466	{
439	/* is this ugly, I ask? */	467	/* restore all saved variables and stuff */
440	LEAVE_SCOPE (0);	468	LEAVE_SCOPE (0);
		469	assert (PL_tmps_floor == -1);
441		470
442	/* sure it is, but more important: is it correct?? :/ */	471	/* free all temporaries */
443	FREETMPS;	472	FREETMPS;
		473	assert (PL_tmps_ix == -1);
444		474
445	/POPSTACK_TO (PL_mainstack);//D//use/	475	POPSTACK_TO (PL_mainstack);
446	}	476	}
447		477
448	while (PL_curstackinfo->si_next)	478	while (PL_curstackinfo->si_next)
449	PL_curstackinfo = PL_curstackinfo->si_next;	479	PL_curstackinfo = PL_curstackinfo->si_next;
450		480
451	while (PL_curstackinfo)	481	while (PL_curstackinfo)
452	{	482	{
453	PERL_SI *p = PL_curstackinfo->si_prev;	483	PERL_SI *p = PL_curstackinfo->si_prev;
454		484
455	{ /D//remove/
456	dSP;
457	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
458	PUTBACK; /* possibly superfluous */
459	}
460
461	if (!IN_DESTRUCT)	485	if (!IN_DESTRUCT)
462	{
463	dounwind (-1);/D//remove/
464	SvREFCNT_dec (PL_curstackinfo->si_stack);	486	SvREFCNT_dec (PL_curstackinfo->si_stack);
465	}
466		487
467	Safefree (PL_curstackinfo->si_cxstack);	488	Safefree (PL_curstackinfo->si_cxstack);
468	Safefree (PL_curstackinfo);	489	Safefree (PL_curstackinfo);
469	PL_curstackinfo = p;	490	PL_curstackinfo = p;
470	}	491	}
…		…
485	* emulate part of the perl startup here.	506	* emulate part of the perl startup here.
486	*/	507	*/
487		508
488	coro_init_stacks ();	509	coro_init_stacks ();
489		510
490	PL_curcop = 0;	511	PL_curcop = &PL_compiling;
491	PL_in_eval = 0;	512	PL_in_eval = EVAL_NULL;
492	PL_curpm = 0;	513	PL_curpm = 0;
		514	PL_localizing = 0;
		515	PL_dirty = 0;
		516	PL_restartop = 0;
493		517
494	{	518	{
495	dSP;	519	dSP;
496	LOGOP myop;	520	LOGOP myop;
497		521
498	/* I have no idea why this is needed, but it is */
499	PUSHMARK (SP);
500
501	SvREFCNT_dec (GvAV (PL_defgv));	522	SvREFCNT_dec (GvAV (PL_defgv));
502	GvAV (PL_defgv) = coro->args; coro->args = 0;	523	GvAV (PL_defgv) = coro->args; coro->args = 0;
503		524
504	Zero (&myop, 1, LOGOP);	525	Zero (&myop, 1, LOGOP);
505	myop.op_next = Nullop;	526	myop.op_next = Nullop;
506	myop.op_flags = OPf_WANT_VOID;	527	myop.op_flags = OPf_WANT_VOID;
507		528
508	PL_op = (OP *)&myop;
509
510	PUSHMARK (SP);	529	PUSHMARK (SP);
511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	530	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
512	PUTBACK;	531	PUTBACK;
		532	PL_op = (OP *)&myop;
513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	533	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
514	SPAGAIN;	534	SPAGAIN;
515
516	ENTER; /* necessary e.g. for dounwind */
517	}	535	}
		536
		537	ENTER; /* necessary e.g. for dounwind */
518	}	538	}
519		539
520	static void	540	static void
521	free_coro_mortal ()	541	free_coro_mortal ()
522	{	542	{
…		…
525	SvREFCNT_dec (coro_mortal);	545	SvREFCNT_dec (coro_mortal);
526	coro_mortal = 0;	546	coro_mortal = 0;
527	}	547	}
528	}	548	}
529		549
		550	/* inject a fake call to Coro::State::_cctx_init into the execution */
530	static void NOINLINE	551	static void NOINLINE
531	prepare_cctx (coro_cctx *cctx)	552	prepare_cctx (coro_cctx *cctx)
532	{	553	{
533	dSP;	554	dSP;
534	LOGOP myop;	555	LOGOP myop;
535		556
536	Zero (&myop, 1, LOGOP);	557	Zero (&myop, 1, LOGOP);
537	myop.op_next = PL_op;	558	myop.op_next = PL_op;
538	myop.op_flags = OPf_WANT_VOID;	559	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
539
540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
541		560
542	PUSHMARK (SP);	561	PUSHMARK (SP);
		562	EXTEND (SP, 2);
		563	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	564	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
544	PUTBACK;	565	PUTBACK;
		566	PL_op = (OP *)&myop;
545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
546	SPAGAIN;	568	SPAGAIN;
547	}	569	}
548		570
549	static void	571	static void
550	coro_run (void *arg)	572	coro_run (void *arg)
551	{	573	{
552	/* coro_run is the alternative epilogue of transfer() */	574	/* coro_run is the alternative tail of transfer(), so unlock here. */
553	UNLOCK;	575	UNLOCK;
554		576
555	/*	577	/*
556	* this is a _very_ stripped down perl interpreter ;)	578	* this is a _very_ stripped down perl interpreter ;)
557	*/	579	*/
…		…
559		581
560	/* inject call to cctx_init */	582	/* inject call to cctx_init */
561	prepare_cctx ((coro_cctx *)arg);	583	prepare_cctx ((coro_cctx *)arg);
562		584
563	/* 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;
564	perl_run (PL_curinterp);	587	perl_run (PL_curinterp);
565		588
566	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);
567	abort ();	590	abort ();
568	}	591	}
…		…
572	{	595	{
573	coro_cctx *cctx;	596	coro_cctx *cctx;
574		597
575	++cctx_count;	598	++cctx_count;
576		599
577	New (0, cctx, 1, coro_cctx);	600	Newz (0, cctx, 1, coro_cctx);
578		601
579	#if HAVE_MMAP	602	#if HAVE_MMAP
580		603
581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	604	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
582	/* mmap suppsedly does allocate-on-write for us */	605	/* mmap supposedly does allocate-on-write for us */
583	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);
584		607
585	if (cctx->sptr == (void *)-1)	608	if (cctx->sptr == (void *)-1)
586	{	609	{
587	perror ("FATAL: unable to mmap stack for coroutine");	610	perror ("FATAL: unable to mmap stack for coroutine");
…		…
677	cctx_first = cctx;	700	cctx_first = cctx;
678	}	701	}
679		702
680	/* never call directly, always through the coro_state_transfer global variable */	703	/* never call directly, always through the coro_state_transfer global variable */
681	static void NOINLINE	704	static void NOINLINE
682	transfer (struct coro prev, struct coro next, int flags)	705	transfer (struct coro prev, struct coro next)
683	{	706	{
684	dSTACKLEVEL;	707	dSTACKLEVEL;
685		708
686	/* sometimes transfer is only called to set idle_sp */	709	/* sometimes transfer is only called to set idle_sp */
687	if (flags == TRANSFER_SET_STACKLEVEL)	710	if (!next)
		711	{
688	((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	}
689	else if (prev != next)	715	else if (prev != next)
690	{	716	{
691	coro_cctx *prev__cctx;	717	coro_cctx *prev__cctx;
692		718
693	if (!prev->cctx)	719	if (prev->flags & CF_NEW)
694	{	720	{
695	/* create a new empty context */	721	/* create a new empty context */
696	Newz (0, prev->cctx, 1, coro_cctx);	722	Newz (0, prev->cctx, 1, coro_cctx);
697	prev->cctx->inuse = 1;	723	prev->cctx->inuse = 1;
		724	prev->flags &= ~CF_NEW;
698	prev->flags \|= CF_RUNNING;	725	prev->flags \|= CF_RUNNING;
699	}	726	}
700		727
		728	/TODO: must not croak here /
701	if (!prev->flags & CF_RUNNING)	729	if (!prev->flags & CF_RUNNING)
702	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	730	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
703		731
704	if (next->flags & CF_RUNNING)	732	if (next->flags & CF_RUNNING)
705	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	733	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
…		…
707	prev->flags &= ~CF_RUNNING;	735	prev->flags &= ~CF_RUNNING;
708	next->flags \|= CF_RUNNING;	736	next->flags \|= CF_RUNNING;
709		737
710	LOCK;	738	LOCK;
711		739
712	if (next->mainstack)	740	if (next->flags & CF_NEW)
713	{	741	{
714	/* coroutine already started */	742	/* need to start coroutine */
715	SAVE (prev, flags);	743	next->flags &= ~CF_NEW;
716	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);
717	}	750	}
718	else	751	else
719	{	752	{
720	/* need to start coroutine */	753	/* coroutine already started */
721	/* first get rid of the old state */	754	save_perl (prev);
722	SAVE (prev, -1);	755	load_perl (next);
723	/* setup coroutine call */
724	setup_coro (next);
725	/* need a new stack */
726	assert (!next->stack);
727	}	756	}
728		757
729	prev__cctx = prev->cctx;	758	prev__cctx = prev->cctx;
730		759
731	/* possibly "free" the cctx */	760	/* possibly "free" the cctx */
732	if (prev__cctx->idle_sp == STACKLEVEL)	761	if (prev__cctx->idle_sp == STACKLEVEL)
733	{	762	{
734	/* 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 */
735	assert (PL_top_env == prev__cctx->top_env);	764	assert (PL_top_env == prev__cctx->top_env);
736		765
		766	prev->cctx = 0;
		767
737	cctx_put (prev__cctx);	768	cctx_put (prev__cctx);
738	prev->cctx = 0;	769	prev__cctx->inuse = 0;
739	}	770	}
740		771
741	if (!next->cctx)	772	if (!next->cctx)
		773	{
742	next->cctx = cctx_get ();	774	next->cctx = cctx_get ();
		775	assert (!next->cctx->inuse);
		776	next->cctx->inuse = 1;
		777	}
743		778
744	if (prev__cctx != next->cctx)	779	if (prev__cctx != next->cctx)
745	{	780	{
746	assert ( prev__cctx->inuse);
747	assert (!next->cctx->inuse);
748
749	prev__cctx->inuse = 0;
750	next->cctx->inuse = 1;
751
752	prev__cctx->top_env = PL_top_env;	781	prev__cctx->top_env = PL_top_env;
753	PL_top_env = next->cctx->top_env;	782	PL_top_env = next->cctx->top_env;
754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	783	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
755	}	784	}
756		785
…		…
761	}	790	}
762		791
763	struct transfer_args	792	struct transfer_args
764	{	793	{
765	struct coro prev, next;	794	struct coro prev, next;
766	int flags;
767	};	795	};
768		796
769	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
770		798
771	static void	799	static void
772	coro_state_destroy (struct coro *coro)	800	coro_state_destroy (struct coro *coro)
773	{	801	{
774	if (coro->refcnt--)	802	if (coro->refcnt--)
775	return;	803	return;
776		804
777	if (coro->flags & CF_RUNNING)
778	croak ("FATAL: tried to destroy currently running coroutine");
779
780	if (coro->mainstack && coro->mainstack != main_mainstack)	805	if (coro->mainstack && coro->mainstack != main_mainstack)
781	{	806	{
782	struct coro temp;	807	struct coro temp;
		808	Zero (&temp, 1, struct coro);
		809	temp.save = CORO_SAVE_ALL;
783		810
784	SAVE ((&temp), TRANSFER_SAVE_ALL);	811	if (coro->flags & CF_RUNNING)
785	LOAD (coro);	812	croak ("FATAL: tried to destroy currently running coroutine");
		813
		814	save_perl (&temp);
		815	load_perl (coro);
786		816
787	coro_destroy_stacks ();	817	coro_destroy_stacks ();
788		818
789	LOAD ((&temp)); /* this will get rid of defsv etc.. */	819	load_perl (&temp); /* this will get rid of defsv etc.. */
790		820
791	coro->mainstack = 0;	821	coro->mainstack = 0;
792	}	822	}
793		823
794	cctx_destroy (coro->cctx);	824	cctx_destroy (coro->cctx);
…		…
849	assert (mg->mg_type == PERL_MAGIC_ext);	879	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;	880	return (struct coro *)mg->mg_ptr;
851	}	881	}
852		882
853	static void	883	static void
854	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)
855	{	885	{
856	ta->prev = SvSTATE (prev);	886	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	887	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;
859	}	888	}
860		889
861	static void	890	static void
862	api_transfer (SV prev, SV next, int flags)	891	api_transfer (SV prev_sv, SV next_sv)
863	{	892	{
864	dTHX;
865	struct transfer_args ta;	893	struct transfer_args ta;
866		894
867	prepare_transfer (&ta, prev, next, flags);	895	prepare_transfer (&ta, prev_sv, next_sv);
868	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;
869	}	909	}
870		910
871	/ Coro ******************************************************************/	911	/ Coro ******************************************************************/
872		912
873	#define PRIO_MAX 3	913	#define PRIO_MAX 3
…		…
876	#define PRIO_LOW -1	916	#define PRIO_LOW -1
877	#define PRIO_IDLE -3	917	#define PRIO_IDLE -3
878	#define PRIO_MIN -4	918	#define PRIO_MIN -4
879		919
880	/* for Coro.pm */	920	/* for Coro.pm */
881	static GV coro_current, coro_idle;	921	static SV *coro_current;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	922	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;	923	static int coro_nready;
884		924
885	static void	925	static void
886	coro_enq (SV *coro_sv)	926	coro_enq (SV *coro_sv)
…		…
919	coro = SvSTATE (coro_sv);	959	coro = SvSTATE (coro_sv);
920		960
921	if (coro->flags & CF_READY)	961	if (coro->flags & CF_READY)
922	return 0;	962	return 0;
923		963
924	if (coro->flags & CF_RUNNING)
925	croak ("Coro::ready called on currently running coroutine");
926
927	coro->flags \|= CF_READY;	964	coro->flags \|= CF_READY;
928		965
929	LOCK;	966	LOCK;
930	coro_enq (SvREFCNT_inc (coro_sv));	967	coro_enq (SvREFCNT_inc (coro_sv));
931	UNLOCK;	968	UNLOCK;
…		…
934	}	971	}
935		972
936	static int	973	static int
937	api_is_ready (SV *coro_sv)	974	api_is_ready (SV *coro_sv)
938	{	975	{
939	return !!SvSTATE (coro_sv)->flags & CF_READY;	976	return !!(SvSTATE (coro_sv)->flags & CF_READY);
940	}	977	}
941		978
942	static void	979	static void
943	prepare_schedule (struct transfer_args *ta)	980	prepare_schedule (struct transfer_args *ta)
944	{	981	{
945	SV current, prev, *next;	982	SV prev, next;
946
947	current = GvSV (coro_current);
948		983
949	for (;;)	984	for (;;)
950	{	985	{
951	LOCK;	986	LOCK;
952	next = coro_deq (PRIO_MIN);	987	next = coro_deq (PRIO_MIN);
…		…
961	ENTER;	996	ENTER;
962	SAVETMPS;	997	SAVETMPS;
963		998
964	PUSHMARK (SP);	999	PUSHMARK (SP);
965	PUTBACK;	1000	PUTBACK;
966	call_sv (GvSV (coro_idle), G_DISCARD);	1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
967		1002
968	FREETMPS;	1003	FREETMPS;
969	LEAVE;	1004	LEAVE;
970	}	1005	}
971	}	1006	}
972		1007
973	prev = SvRV (current);	1008	prev = SvRV (coro_current);
974	SvRV (current) = next;	1009	SvRV_set (coro_current, next);
975		1010
976	/* free this only after the transfer */	1011	/* free this only after the transfer */
977	LOCK;	1012	LOCK;
978	free_coro_mortal ();	1013	free_coro_mortal ();
979	UNLOCK;	1014	UNLOCK;
980	coro_mortal = prev;	1015	coro_mortal = prev;
981		1016
		1017	assert (!SvROK(prev));//D
		1018	assert (!SvROK(next));//D
		1019
982	ta->prev = SvSTATE (prev);	1020	ta->prev = SvSTATE (prev);
983	ta->next = SvSTATE (next);	1021	ta->next = SvSTATE (next);
984	ta->flags = TRANSFER_SAVE_ALL;
985		1022
		1023	assert (ta->next->flags & CF_READY);
986	ta->next->flags &= ~CF_READY;	1024	ta->next->flags &= ~CF_READY;
987	}	1025	}
988		1026
989	static void	1027	static void
990	prepare_cede (struct transfer_args *ta)	1028	prepare_cede (struct transfer_args *ta)
991	{	1029	{
992	api_ready (GvSV (coro_current));	1030	api_ready (coro_current);
993
994	prepare_schedule (ta);	1031	prepare_schedule (ta);
995	}	1032	}
996		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;
		1046	}
		1047
997	static void	1048	static void
998	api_schedule (void)	1049	api_schedule (void)
999	{	1050	{
1000	dTHX;
1001	struct transfer_args ta;	1051	struct transfer_args ta;
1002		1052
1003	prepare_schedule (&ta);	1053	prepare_schedule (&ta);
1004	TRANSFER (ta);	1054	TRANSFER (ta);
1005	}	1055	}
1006		1056
1007	static void	1057	static int
1008	api_cede (void)	1058	api_cede (void)
1009	{	1059	{
1010	dTHX;
1011	struct transfer_args ta;	1060	struct transfer_args ta;
1012		1061
1013	prepare_cede (&ta);	1062	prepare_cede (&ta);
		1063
		1064	if (ta.prev != ta.next)
		1065	{
1014	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;
1015	}	1085	}
1016		1086
1017	MODULE = Coro::State PACKAGE = Coro::State	1087	MODULE = Coro::State PACKAGE = Coro::State
1018		1088
1019	PROTOTYPES: DISABLE	1089	PROTOTYPES: DISABLE
…		…
1025	#endif	1095	#endif
1026	BOOT_PAGESIZE;	1096	BOOT_PAGESIZE;
1027		1097
1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1098	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029		1099
1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1100	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1032	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));
1033		1105
1034	main_mainstack = PL_mainstack;	1106	main_mainstack = PL_mainstack;
1035		1107
1036	coroapi.ver = CORO_API_VERSION;	1108	coroapi.ver = CORO_API_VERSION;
1037	coroapi.transfer = api_transfer;	1109	coroapi.transfer = api_transfer;
…		…
1047	HV *hv;	1119	HV *hv;
1048	int i;	1120	int i;
1049		1121
1050	Newz (0, coro, 1, struct coro);	1122	Newz (0, coro, 1, struct coro);
1051	coro->args = newAV ();	1123	coro->args = newAV ();
		1124	coro->save = CORO_SAVE_ALL;
		1125	coro->flags = CF_NEW;
1052		1126
1053	hv = newHV ();	1127	hv = newHV ();
1054	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;
1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1129	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056		1130
1057	for (i = 1; i < items; i++)	1131	for (i = 1; i < items; i++)
1058	av_push (coro->args, newSVsv (ST (i)));	1132	av_push (coro->args, newSVsv (ST (i)));
1059	}	1133	}
1060	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:
1061	RETVAL	1142	RETVAL
1062		1143
1063	void	1144	void
1064	_set_stacklevel (...)	1145	_set_stacklevel (...)
1065	ALIAS:	1146	ALIAS:
1066	Coro::State::transfer = 1	1147	Coro::State::transfer = 1
1067	Coro::schedule = 2	1148	Coro::schedule = 2
1068	Coro::cede = 3	1149	Coro::cede = 3
1069	Coro::Cont::yield = 4	1150	Coro::cede_notself = 4
1070	CODE:	1151	CODE:
1071	{	1152	{
1072	struct transfer_args ta;	1153	struct transfer_args ta;
1073		1154
1074	switch (ix)	1155	switch (ix)
1075	{	1156	{
1076	case 0:	1157	case 0:
1077	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1158	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1078	ta.next = 0;	1159	ta.next = 0;
1079	ta.flags = TRANSFER_SET_STACKLEVEL;
1080	break;	1160	break;
1081		1161
1082	case 1:	1162	case 1:
1083	if (items != 3)	1163	if (items != 2)
1084	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);
1085		1165
1086	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1166	prepare_transfer (&ta, ST (0), ST (1));
1087	break;	1167	break;
1088		1168
1089	case 2:	1169	case 2:
1090	prepare_schedule (&ta);	1170	prepare_schedule (&ta);
1091	break;	1171	break;
…		…
1093	case 3:	1173	case 3:
1094	prepare_cede (&ta);	1174	prepare_cede (&ta);
1095	break;	1175	break;
1096		1176
1097	case 4:	1177	case 4:
1098	{	1178	if (!prepare_cede_notself (&ta))
1099	SV *yieldstack;	1179	XSRETURN_EMPTY;
1100	SV *sv;
1101	AV *defav = GvAV (PL_defgv);
1102		1180
1103	yieldstack = *hv_fetch (
1104	(HV *)SvRV (GvSV (coro_current)),
1105	"yieldstack", sizeof ("yieldstack") - 1,
1106	0
1107	);
1108
1109	/* set up @_ -- ugly */
1110	av_clear (defav);
1111	av_fill (defav, items - 1);
1112	while (items--)
1113	av_store (defav, items, SvREFCNT_inc (ST(items)));
1114
1115	sv = av_pop ((AV *)SvRV (yieldstack));
1116	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1117	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1118	ta.flags = 0;
1119	SvREFCNT_dec (sv);
1120	}
1121	break;	1181	break;
1122
1123	}	1182	}
1124		1183
		1184	BARRIER;
1125	TRANSFER (ta);	1185	TRANSFER (ta);
1126	}	1186	}
1127		1187
1128	void	1188	void
1129	_clone_state_from (SV dst, SV src)	1189	_clone_state_from (SV dst, SV src)
…		…
1171	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1231	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1172	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1232	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1173	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1233	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1174	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1234	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1175		1235
1176	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1236	coro_current = get_sv ("Coro::current", FALSE);
1177	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1237	SvREADONLY_on (coro_current);
1178		1238
1179	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1239	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1180	coro_ready[i] = newAV ();	1240	coro_ready[i] = newAV ();
1181		1241
1182	{	1242	{
1183	SV *sv = perl_get_sv("Coro::API", 1);	1243	SV *sv = perl_get_sv("Coro::API", 1);
1184		1244
1185	coroapi.schedule = api_schedule;	1245	coroapi.schedule = api_schedule;
		1246	coroapi.save = api_save;
1186	coroapi.cede = api_cede;	1247	coroapi.cede = api_cede;
		1248	coroapi.cede_notself = api_cede_notself;
1187	coroapi.ready = api_ready;	1249	coroapi.ready = api_ready;
1188	coroapi.is_ready = api_is_ready;	1250	coroapi.is_ready = api_is_ready;
1189	coroapi.nready = &coro_nready;	1251	coroapi.nready = &coro_nready;
1190	coroapi.current = coro_current;	1252	coroapi.current = coro_current;
1191		1253
1192	GCoroAPI = &coroapi;	1254	GCoroAPI = &coroapi;
1193	sv_setiv (sv, (IV)&coroapi);	1255	sv_setiv (sv, (IV)&coroapi);
1194	SvREADONLY_on (sv);	1256	SvREADONLY_on (sv);
1195	}	1257	}
1196	}	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)));
1197		1266
1198	int	1267	int
1199	prio (Coro::State coro, int newprio = 0)	1268	prio (Coro::State coro, int newprio = 0)
1200	ALIAS:	1269	ALIAS:
1201	nice = 1	1270	nice = 1
…		…
1204	RETVAL = coro->prio;	1273	RETVAL = coro->prio;
1205		1274
1206	if (items > 1)	1275	if (items > 1)
1207	{	1276	{
1208	if (ix)	1277	if (ix)
1209	newprio += coro->prio;	1278	newprio = coro->prio - newprio;
1210		1279
1211	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1280	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1212	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1281	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1213		1282
1214	coro->prio = newprio;	1283	coro->prio = newprio;
1215	}	1284	}
1216	}	1285	}
		1286	OUTPUT:
		1287	RETVAL
1217		1288
1218	SV *	1289	SV *
1219	ready (SV *self)	1290	ready (SV *self)
1220	PROTOTYPE: $	1291	PROTOTYPE: $
1221	CODE:	1292	CODE:
…		…
1243		1314
1244	SV *	1315	SV *
1245	_get_state ()	1316	_get_state ()
1246	CODE:	1317	CODE:
1247	{	1318	{
1248	struct {	1319	struct io_state *data;
1249	int errorno;
1250	int laststype;
1251	int laststatval;
1252	Stat_t statcache;
1253	} data;
1254		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
1255	data.errorno = errno;	1326	data->errorno = errno;
1256	data.laststype = PL_laststype;	1327	data->laststype = PL_laststype;
1257	data.laststatval = PL_laststatval;	1328	data->laststatval = PL_laststatval;
1258	data.statcache = PL_statcache;	1329	data->statcache = PL_statcache;
1259
1260	RETVAL = newSVpvn ((char *)&data, sizeof data);
1261	}	1330	}
1262	OUTPUT:	1331	OUTPUT:
1263	RETVAL	1332	RETVAL
1264		1333
1265	void	1334	void
1266	_set_state (char *data_)	1335	_set_state (char *data_)
1267	PROTOTYPE: $	1336	PROTOTYPE: $
1268	CODE:	1337	CODE:
1269	{	1338	{
1270	struct {	1339	struct io_state data = (void )data_;
1271	int errorno;
1272	int laststype;
1273	int laststatval;
1274	Stat_t statcache;
1275	} data = (void )data_;
1276		1340
1277	errno = data->errorno;	1341	errno = data->errorno;
1278	PL_laststype = data->laststype;	1342	PL_laststype = data->laststype;
1279	PL_laststatval = data->laststatval;	1343	PL_laststatval = data->laststatval;
1280	PL_statcache = data->statcache;	1344	PL_statcache = data->statcache;
1281	}	1345	}
		1346

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Comparing Coro/Coro/State.xs (file contents): Revision 1.116 by root, Fri Dec 1 14:01:43 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 1.116 by root, Fri Dec 1 14:01:43 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC