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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.115 by root, Fri Dec 1 13:36:08 2006 UTC vs.
Revision 1.130 by root, Mon Dec 25 13:25:55 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)
…		…
89	#endif	100	#endif
90		101
91	#define NOINLINE attribute ((noinline))	102	#define NOINLINE attribute ((noinline))
92		103
93	#include "CoroAPI.h"	104	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		105
97	#ifdef USE_ITHREADS	106	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	107	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	108	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	109	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	110	#else
102	# define LOCK (void)0	111	# define LOCK (void)0
103	# define UNLOCK (void)0	112	# define UNLOCK (void)0
104	#endif	113	#endif
105		114
		115	struct io_state
		116	{
		117	int errorno;
		118	I32 laststype;
		119	int laststatval;
		120	Stat_t statcache;
		121	};
		122
106	static struct CoroAPI coroapi;	123	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	124	static AV main_mainstack; / used to differentiate between $main and others */
108	static HV coro_state_stash, coro_stash;	125	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	126	static SV coro_mortal; / will be freed after next transfer */
110		127
…		…
130	int valgrind_id;	147	int valgrind_id;
131	#endif	148	#endif
132	} coro_cctx;	149	} coro_cctx;
133		150
134	enum {	151	enum {
135	CF_RUNNING, /* coroutine is running */	152	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY, /* coroutine is ready */	153	CF_READY = 0x0002, /* coroutine is ready */
		154	CF_NEW = 0x0004, /* ahs never been switched to */
137	};	155	};
138		156
139	/* this is a structure representing a perl-level coroutine */	157	/* this is a structure representing a perl-level coroutine */
140	struct coro {	158	struct coro {
141	/* the c coroutine allocated to this perl coroutine, if any */	159	/* the c coroutine allocated to this perl coroutine, if any */
142	coro_cctx *cctx;	160	coro_cctx *cctx;
143		161
144	/* data associated with this coroutine (initial args) */	162	/* data associated with this coroutine (initial args) */
145	AV *args;	163	AV *args;
146	int refcnt;	164	int refcnt;
147	int flags;	165	int save; /* CORO_SAVE flags */
		166	int flags; /* CF_ flags */
148		167
149	/* optionally saved, might be zero */	168	/* optionally saved, might be zero */
150	AV *defav;	169	AV defav; / @_ */
151	SV *defsv;	170	SV defsv; / $_ */
152	SV *errsv;	171	SV errsv; / $@ */
		172	SV irssv; / $/ */
		173	SV irssv_sv; / real $/ cache */
153		174
154	#define VAR(name,type) type name;	175	#define VAR(name,type) type name;
155	# include "state.h"	176	# include "state.h"
156	#undef VAR	177	#undef VAR
157		178
…		…
243		264
244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
246	else	267	else
247	{	268	{
248	#if 0	269	#if PREFER_PERL_FUNCTIONS
249	/* this is probably cleaner, but also slower? */	270	/* this is probably cleaner, but also slower? */
250	CV *cp = Perl_cv_clone (cv);	271	CV *cp = Perl_cv_clone (cv);
251	CvPADLIST (cv) = CvPADLIST (cp);	272	CvPADLIST (cv) = CvPADLIST (cp);
252	CvPADLIST (cp) = 0;	273	CvPADLIST (cp) = 0;
253	SvREFCNT_dec (cp);	274	SvREFCNT_dec (cp);
…		…
280	}	301	}
281		302
282	#define SB do {	303	#define SB do {
283	#define SE } while (0)	304	#define SE } while (0)
284		305
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	306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
289		307
290	static void	308	static void
291	load_state(Coro__State c)	309	load_perl (Coro__State c)
292	{	310	{
293	#define VAR(name,type) PL_ ## name = c->name;	311	#define VAR(name,type) PL_ ## name = c->name;
294	# include "state.h"	312	# include "state.h"
295	#undef VAR	313	#undef VAR
296		314
297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
299	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		318	if (c->irssv)
		319	{
		320	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		321	SvREFCNT_dec (c->irssv);
		322	else
		323	{
		324	REPLACE_SV (PL_rs, c->irssv);
		325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		326	sv_setsv (c->irssv_sv, PL_rs);
		327	}
		328	}
300		329
301	{	330	{
302	dSP;	331	dSP;
303	CV *cv;	332	CV *cv;
304		333
…		…
313	PUTBACK;	342	PUTBACK;
314	}	343	}
315	}	344	}
316		345
317	static void	346	static void
318	save_state(Coro__State c, int flags)	347	save_perl (Coro__State c)
319	{	348	{
320	{	349	{
321	dSP;	350	dSP;
322	I32 cxix = cxstack_ix;	351	I32 cxix = cxstack_ix;
323	PERL_CONTEXT *ccstk = cxstack;	352	PERL_CONTEXT *ccstk = cxstack;
…		…
326	/*	355	/*
327	* the worst thing you can imagine happens first - we have to save	356	* the worst thing you can imagine happens first - we have to save
328	* (and reinitialize) all cv's in the whole callchain :(	357	* (and reinitialize) all cv's in the whole callchain :(
329	*/	358	*/
330		359
		360	EXTEND (SP, 3 + 1);
331	PUSHs (Nullsv);	361	PUSHs (Nullsv);
332	/* this loop was inspired by pp_caller */	362	/* this loop was inspired by pp_caller */
333	for (;;)	363	for (;;)
334	{	364	{
335	while (cxix >= 0)	365	while (cxix >= 0)
336	{	366	{
337	PERL_CONTEXT *cx = &ccstk[cxix--];	367	PERL_CONTEXT *cx = &ccstk[cxix--];
338		368
339	if (CxTYPE(cx) == CXt_SUB)	369	if (CxTYPE (cx) == CXt_SUB)
340	{	370	{
341	CV *cv = cx->blk_sub.cv;	371	CV *cv = cx->blk_sub.cv;
342		372
343	if (CvDEPTH (cv))	373	if (CvDEPTH (cv))
344	{	374	{
345	EXTEND (SP, 3);	375	EXTEND (SP, 3);
346
347	PUSHs ((SV *)CvPADLIST(cv));	376	PUSHs ((SV *)CvPADLIST (cv));
348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
349	PUSHs ((SV *)cv);	378	PUSHs ((SV *)cv);
350		379
351	CvDEPTH (cv) = 0;	380	CvDEPTH (cv) = 0;
352	get_padlist (cv);	381	get_padlist (cv);
353	}	382	}
354	}	383	}
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	}	384	}
364		385
365	if (top_si->si_type == PERLSI_MAIN)	386	if (top_si->si_type == PERLSI_MAIN)
366	break;	387	break;
367		388
…		…
371	}	392	}
372		393
373	PUTBACK;	394	PUTBACK;
374	}	395	}
375		396
376	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	397	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;	398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
378	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
379		401
380	#define VAR(name,type)c->name = PL_ ## name;	402	#define VAR(name,type)c->name = PL_ ## name;
381	# include "state.h"	403	# include "state.h"
382	#undef VAR	404	#undef VAR
383	}	405	}
…		…
386	* allocate various perl stacks. This is an exact copy	408	* allocate various perl stacks. This is an exact copy
387	* of perl.c:init_stacks, except that it uses less memory	409	* of perl.c:init_stacks, except that it uses less memory
388	* on the (sometimes correct) assumption that coroutines do	410	* on the (sometimes correct) assumption that coroutines do
389	* not usually need a lot of stackspace.	411	* not usually need a lot of stackspace.
390	*/	412	*/
		413	#if PREFER_PERL_FUNCTIONS
		414	# define coro_init_stacks init_stacks
		415	#else
391	static void	416	static void
392	coro_init_stacks ()	417	coro_init_stacks ()
393	{	418	{
394	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
395	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
396	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
397	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
398		423
399	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
400	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
401	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
402		427
403	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
404	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
405	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
406	PL_tmps_max = 96;	431	PL_tmps_max = 128;
407		432
408	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
409	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
410	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
411		436
412	#ifdef SET_MARK_OFFSET	437	#ifdef SET_MARK_OFFSET
413	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
414	#endif	439	#endif
415		440
416	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
417	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
418	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
419		444
420	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
421	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
422	PL_savestack_max = 96;	447	PL_savestack_max = 64;
423		448
424	#if !PERL_VERSION_ATLEAST (5,9,0)	449	#if !PERL_VERSION_ATLEAST (5,9,0)
425	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
426	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
427	PL_retstack_max = 8;	452	PL_retstack_max = 16;
428	#endif	453	#endif
429	}	454	}
		455	#endif
430		456
431	/*	457	/*
432	* destroy the stacks, the callchain etc...	458	* destroy the stacks, the callchain etc...
433	*/	459	*/
434	static void	460	static void
435	coro_destroy_stacks ()	461	coro_destroy_stacks ()
436	{	462	{
437	if (!IN_DESTRUCT)	463	if (!IN_DESTRUCT)
438	{	464	{
439	/* is this ugly, I ask? */	465	/* restore all saved variables and stuff */
440	LEAVE_SCOPE (0);	466	LEAVE_SCOPE (0);
		467	assert (PL_tmps_floor == -1);
441		468
442	/* sure it is, but more important: is it correct?? :/ */	469	/* free all temporaries */
443	FREETMPS;	470	FREETMPS;
		471	assert (PL_tmps_ix == -1);
444		472
445	/POPSTACK_TO (PL_mainstack);//D//use/	473	POPSTACK_TO (PL_mainstack);
446	}	474	}
447		475
448	while (PL_curstackinfo->si_next)	476	while (PL_curstackinfo->si_next)
449	PL_curstackinfo = PL_curstackinfo->si_next;	477	PL_curstackinfo = PL_curstackinfo->si_next;
450		478
451	while (PL_curstackinfo)	479	while (PL_curstackinfo)
452	{	480	{
453	PERL_SI *p = PL_curstackinfo->si_prev;	481	PERL_SI *p = PL_curstackinfo->si_prev;
454		482
455	{ /D//remove/
456	dSP;
457	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
458	PUTBACK; /* possibly superfluous */
459	}
460
461	if (!IN_DESTRUCT)	483	if (!IN_DESTRUCT)
462	{
463	dounwind (-1);/D//remove/
464	SvREFCNT_dec (PL_curstackinfo->si_stack);	484	SvREFCNT_dec (PL_curstackinfo->si_stack);
465	}
466		485
467	Safefree (PL_curstackinfo->si_cxstack);	486	Safefree (PL_curstackinfo->si_cxstack);
468	Safefree (PL_curstackinfo);	487	Safefree (PL_curstackinfo);
469	PL_curstackinfo = p;	488	PL_curstackinfo = p;
470	}	489	}
…		…
485	* emulate part of the perl startup here.	504	* emulate part of the perl startup here.
486	*/	505	*/
487		506
488	coro_init_stacks ();	507	coro_init_stacks ();
489		508
490	PL_curcop = 0;	509	PL_curcop = &PL_compiling;
491	PL_in_eval = 0;	510	PL_in_eval = EVAL_NULL;
492	PL_curpm = 0;	511	PL_curpm = 0;
		512	PL_localizing = 0;
		513	PL_dirty = 0;
		514	PL_restartop = 0;
493		515
494	{	516	{
495	dSP;	517	dSP;
496	LOGOP myop;	518	LOGOP myop;
497		519
498	/* I have no idea why this is needed, but it is */
499	PUSHMARK (SP);
500
501	SvREFCNT_dec (GvAV (PL_defgv));	520	SvREFCNT_dec (GvAV (PL_defgv));
502	GvAV (PL_defgv) = coro->args; coro->args = 0;	521	GvAV (PL_defgv) = coro->args; coro->args = 0;
503		522
504	Zero (&myop, 1, LOGOP);	523	Zero (&myop, 1, LOGOP);
505	myop.op_next = Nullop;	524	myop.op_next = Nullop;
506	myop.op_flags = OPf_WANT_VOID;	525	myop.op_flags = OPf_WANT_VOID;
507		526
508	PL_op = (OP *)&myop;
509
510	PUSHMARK (SP);	527	PUSHMARK (SP);
511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
512	PUTBACK;	529	PUTBACK;
		530	PL_op = (OP *)&myop;
513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
514	SPAGAIN;	532	SPAGAIN;
515
516	ENTER; /* necessary e.g. for dounwind */
517	}	533	}
		534
		535	ENTER; /* necessary e.g. for dounwind */
518	}	536	}
519		537
520	static void	538	static void
521	free_coro_mortal ()	539	free_coro_mortal ()
522	{	540	{
…		…
525	SvREFCNT_dec (coro_mortal);	543	SvREFCNT_dec (coro_mortal);
526	coro_mortal = 0;	544	coro_mortal = 0;
527	}	545	}
528	}	546	}
529		547
		548	/* inject a fake call to Coro::State::_cctx_init into the execution */
530	static void NOINLINE	549	static void NOINLINE
531	prepare_cctx (coro_cctx *cctx)	550	prepare_cctx (coro_cctx *cctx)
532	{	551	{
533	dSP;	552	dSP;
534	LOGOP myop;	553	LOGOP myop;
535		554
536	Zero (&myop, 1, LOGOP);	555	Zero (&myop, 1, LOGOP);
537	myop.op_next = PL_op;	556	myop.op_next = PL_op;
538	myop.op_flags = OPf_WANT_VOID;	557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
539
540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
541		558
542	PUSHMARK (SP);	559	PUSHMARK (SP);
		560	EXTEND (SP, 2);
		561	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	562	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
544	PUTBACK;	563	PUTBACK;
		564	PL_op = (OP *)&myop;
545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
546	SPAGAIN;	566	SPAGAIN;
547	}	567	}
548		568
549	static void	569	static void
550	coro_run (void *arg)	570	coro_run (void *arg)
551	{	571	{
552	/* coro_run is the alternative epilogue of transfer() */	572	/* coro_run is the alternative tail of transfer(), so unlock here. */
553	UNLOCK;	573	UNLOCK;
554		574
555	/*	575	/*
556	* this is a _very_ stripped down perl interpreter ;)	576	* this is a _very_ stripped down perl interpreter ;)
557	*/	577	*/
…		…
559		579
560	/* inject call to cctx_init */	580	/* inject call to cctx_init */
561	prepare_cctx ((coro_cctx *)arg);	581	prepare_cctx ((coro_cctx *)arg);
562		582
563	/* somebody will hit me for both perl_run and PL_restartop */	583	/* somebody will hit me for both perl_run and PL_restartop */
		584	PL_restartop = PL_op;
564	perl_run (PL_curinterp);	585	perl_run (PL_curinterp);
565		586
566	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
567	abort ();	588	abort ();
568	}	589	}
…		…
572	{	593	{
573	coro_cctx *cctx;	594	coro_cctx *cctx;
574		595
575	++cctx_count;	596	++cctx_count;
576		597
577	New (0, cctx, 1, coro_cctx);	598	Newz (0, cctx, 1, coro_cctx);
578		599
579	#if HAVE_MMAP	600	#if HAVE_MMAP
580		601
581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
582	/* mmap suppsedly does allocate-on-write for us */	603	/* 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);	604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
584		605
585	if (cctx->sptr == (void *)-1)	606	if (cctx->sptr == (void *)-1)
586	{	607	{
587	perror ("FATAL: unable to mmap stack for coroutine");	608	perror ("FATAL: unable to mmap stack for coroutine");
…		…
677	cctx_first = cctx;	698	cctx_first = cctx;
678	}	699	}
679		700
680	/* never call directly, always through the coro_state_transfer global variable */	701	/* never call directly, always through the coro_state_transfer global variable */
681	static void NOINLINE	702	static void NOINLINE
682	transfer (struct coro prev, struct coro next, int flags)	703	transfer (struct coro prev, struct coro next)
683	{	704	{
684	dSTACKLEVEL;	705	dSTACKLEVEL;
685		706
686	/* sometimes transfer is only called to set idle_sp */	707	/* sometimes transfer is only called to set idle_sp */
687	if (flags == TRANSFER_SET_STACKLEVEL)	708	if (!next)
		709	{
688	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		711	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		712	}
689	else if (prev != next)	713	else if (prev != next)
690	{	714	{
691	coro_cctx *prev__cctx;	715	coro_cctx *prev__cctx;
692		716
693	if (!prev->cctx)	717	if (prev->flags & CF_NEW)
694	{	718	{
695	/* create a new empty context */	719	/* create a new empty context */
696	Newz (0, prev->cctx, 1, coro_cctx);	720	Newz (0, prev->cctx, 1, coro_cctx);
697	prev->cctx->inuse = 1;	721	prev->cctx->inuse = 1;
		722	prev->flags &= ~CF_NEW;
698	prev->flags \|= CF_RUNNING;	723	prev->flags \|= CF_RUNNING;
699	}	724	}
700		725
		726	/TODO: must not croak here /
701	if (!prev->flags & CF_RUNNING)	727	if (!prev->flags & CF_RUNNING)
702	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	728	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
703		729
704	if (next->flags & CF_RUNNING)	730	if (next->flags & CF_RUNNING)
705	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
…		…
707	prev->flags &= ~CF_RUNNING;	733	prev->flags &= ~CF_RUNNING;
708	next->flags \|= CF_RUNNING;	734	next->flags \|= CF_RUNNING;
709		735
710	LOCK;	736	LOCK;
711		737
712	if (next->mainstack)	738	if (next->flags & CF_NEW)
713	{	739	{
714	/* coroutine already started */	740	/* need to start coroutine */
715	SAVE (prev, flags);	741	next->flags &= ~CF_NEW;
716	LOAD (next);	742	/* first get rid of the old state */
		743	save_perl (prev);
		744	/* setup coroutine call */
		745	setup_coro (next);
		746	/* need a new stack */
		747	assert (!next->cctx);
717	}	748	}
718	else	749	else
719	{	750	{
720	/* need to start coroutine */	751	/* coroutine already started */
721	/* first get rid of the old state */	752	save_perl (prev);
722	SAVE (prev, -1);	753	load_perl (next);
723	/* setup coroutine call */
724	setup_coro (next);
725	/* need a new stack */
726	assert (!next->stack);
727	}	754	}
728		755
729	prev__cctx = prev->cctx;	756	prev__cctx = prev->cctx;
730		757
731	/* possibly "free" the cctx */	758	/* possibly "free" the cctx */
732	if (prev__cctx->idle_sp == STACKLEVEL)	759	if (prev__cctx->idle_sp == STACKLEVEL)
733	{	760	{
734	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
735	assert (PL_top_env == prev__cctx->top_env);	762	assert (PL_top_env == prev__cctx->top_env);
736		763
		764	prev->cctx = 0;
		765
737	cctx_put (prev__cctx);	766	cctx_put (prev__cctx);
738	prev->cctx = 0;	767	prev__cctx->inuse = 0;
739	}	768	}
740		769
741	if (!next->cctx)	770	if (!next->cctx)
		771	{
742	next->cctx = cctx_get ();	772	next->cctx = cctx_get ();
		773	assert (!next->cctx->inuse);
		774	next->cctx->inuse = 1;
		775	}
743		776
744	if (prev__cctx != next->cctx)	777	if (prev__cctx != next->cctx)
745	{	778	{
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;	779	prev__cctx->top_env = PL_top_env;
753	PL_top_env = next->cctx->top_env;	780	PL_top_env = next->cctx->top_env;
754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
755	}	782	}
756		783
…		…
761	}	788	}
762		789
763	struct transfer_args	790	struct transfer_args
764	{	791	{
765	struct coro prev, next;	792	struct coro prev, next;
766	int flags;
767	};	793	};
768		794
769	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
770		796
771	static void	797	static void
772	coro_state_destroy (struct coro *coro)	798	coro_state_destroy (struct coro *coro)
773	{	799	{
774	if (coro->refcnt--)	800	if (coro->refcnt--)
775	return;	801	return;
776		802
777	if (coro->flags & CF_RUNNING)
778	croak ("FATAL: tried to destroy currently running coroutine");
779
780	if (coro->mainstack && coro->mainstack != main_mainstack)	803	if (coro->mainstack && coro->mainstack != main_mainstack)
781	{	804	{
782	struct coro temp;	805	struct coro temp;
		806	Zero (&temp, 1, struct coro);
		807	temp.save = CORO_SAVE_ALL;
783		808
784	SAVE ((&temp), TRANSFER_SAVE_ALL);	809	if (coro->flags & CF_RUNNING)
785	LOAD (coro);	810	croak ("FATAL: tried to destroy currently running coroutine");
		811
		812	save_perl (&temp);
		813	load_perl (coro);
786		814
787	coro_destroy_stacks ();	815	coro_destroy_stacks ();
788		816
789	LOAD ((&temp)); /* this will get rid of defsv etc.. */	817	load_perl (&temp); /* this will get rid of defsv etc.. */
790		818
791	coro->mainstack = 0;	819	coro->mainstack = 0;
792	}	820	}
793		821
794	cctx_destroy (coro->cctx);	822	cctx_destroy (coro->cctx);
…		…
849	assert (mg->mg_type == PERL_MAGIC_ext);	877	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;	878	return (struct coro *)mg->mg_ptr;
851	}	879	}
852		880
853	static void	881	static void
854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
855	{	883	{
856	ta->prev = SvSTATE (prev);	884	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	885	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;
859	}	886	}
860		887
861	static void	888	static void
862	api_transfer (SV prev, SV next, int flags)	889	api_transfer (SV prev_sv, SV next_sv)
863	{	890	{
864	dTHX;
865	struct transfer_args ta;	891	struct transfer_args ta;
866		892
867	prepare_transfer (&ta, prev, next, flags);	893	prepare_transfer (&ta, prev_sv, next_sv);
868	TRANSFER (ta);	894	TRANSFER (ta);
		895	}
		896
		897	static int
		898	api_save (SV *coro_sv, int new_save)
		899	{
		900	struct coro *coro = SvSTATE (coro_sv);
		901	int old_save = coro->save;
		902
		903	if (new_save >= 0)
		904	coro->save = new_save;
		905
		906	return old_save;
869	}	907	}
870		908
871	/ Coro ******************************************************************/	909	/ Coro ******************************************************************/
872		910
873	#define PRIO_MAX 3	911	#define PRIO_MAX 3
…		…
876	#define PRIO_LOW -1	914	#define PRIO_LOW -1
877	#define PRIO_IDLE -3	915	#define PRIO_IDLE -3
878	#define PRIO_MIN -4	916	#define PRIO_MIN -4
879		917
880	/* for Coro.pm */	918	/* for Coro.pm */
881	static GV coro_current, coro_idle;	919	static SV *coro_current;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;	921	static int coro_nready;
884		922
885	static void	923	static void
886	coro_enq (SV *coro_sv)	924	coro_enq (SV *coro_sv)
…		…
919	coro = SvSTATE (coro_sv);	957	coro = SvSTATE (coro_sv);
920		958
921	if (coro->flags & CF_READY)	959	if (coro->flags & CF_READY)
922	return 0;	960	return 0;
923		961
924	if (coro->flags & CF_RUNNING)
925	croak ("Coro::ready called on currently running coroutine");
926
927	coro->flags \|= CF_READY;	962	coro->flags \|= CF_READY;
928		963
929	LOCK;	964	LOCK;
930	coro_enq (SvREFCNT_inc (coro_sv));	965	coro_enq (SvREFCNT_inc (coro_sv));
931	UNLOCK;	966	UNLOCK;
…		…
934	}	969	}
935		970
936	static int	971	static int
937	api_is_ready (SV *coro_sv)	972	api_is_ready (SV *coro_sv)
938	{	973	{
939	return !!SvSTATE (coro_sv)->flags & CF_READY;	974	return !!(SvSTATE (coro_sv)->flags & CF_READY);
940	}	975	}
941		976
942	static void	977	static void
943	prepare_schedule (struct transfer_args *ta)	978	prepare_schedule (struct transfer_args *ta)
944	{	979	{
945	SV current, prev, *next;	980	SV prev, next;
946
947	current = GvSV (coro_current);
948		981
949	for (;;)	982	for (;;)
950	{	983	{
951	LOCK;	984	LOCK;
952	next = coro_deq (PRIO_MIN);	985	next = coro_deq (PRIO_MIN);
…		…
961	ENTER;	994	ENTER;
962	SAVETMPS;	995	SAVETMPS;
963		996
964	PUSHMARK (SP);	997	PUSHMARK (SP);
965	PUTBACK;	998	PUTBACK;
966	call_sv (GvSV (coro_idle), G_DISCARD);	999	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
967		1000
968	FREETMPS;	1001	FREETMPS;
969	LEAVE;	1002	LEAVE;
970	}	1003	}
971	}	1004	}
972		1005
973	prev = SvRV (current);	1006	prev = SvRV (coro_current);
974	SvRV (current) = next;	1007	SvRV_set (coro_current, next);
975		1008
976	/* free this only after the transfer */	1009	/* free this only after the transfer */
977	LOCK;	1010	LOCK;
978	free_coro_mortal ();	1011	free_coro_mortal ();
979	UNLOCK;	1012	UNLOCK;
980	coro_mortal = prev;	1013	coro_mortal = prev;
981		1014
		1015	assert (!SvROK(prev));//D
		1016	assert (!SvROK(next));//D
		1017
982	ta->prev = SvSTATE (prev);	1018	ta->prev = SvSTATE (prev);
983	ta->next = SvSTATE (next);	1019	ta->next = SvSTATE (next);
984	ta->flags = TRANSFER_SAVE_ALL;
985		1020
		1021	assert (ta->next->flags & CF_READY);
986	ta->next->flags &= ~CF_READY;	1022	ta->next->flags &= ~CF_READY;
987	}	1023	}
988		1024
989	static void	1025	static void
990	prepare_cede (struct transfer_args *ta)	1026	prepare_cede (struct transfer_args *ta)
991	{	1027	{
992	api_ready (GvSV (coro_current));	1028	api_ready (coro_current);
993		1029
994	prepare_schedule (ta);	1030	prepare_schedule (ta);
995	}	1031	}
996		1032
997	static void	1033	static void
998	api_schedule (void)	1034	api_schedule (void)
999	{	1035	{
1000	dTHX;
1001	struct transfer_args ta;	1036	struct transfer_args ta;
1002		1037
1003	prepare_schedule (&ta);	1038	prepare_schedule (&ta);
1004	TRANSFER (ta);	1039	TRANSFER (ta);
1005	}	1040	}
1006		1041
1007	static void	1042	static void
1008	api_cede (void)	1043	api_cede (void)
1009	{	1044	{
1010	dTHX;
1011	struct transfer_args ta;	1045	struct transfer_args ta;
1012		1046
1013	prepare_cede (&ta);	1047	prepare_cede (&ta);
1014	TRANSFER (ta);	1048	TRANSFER (ta);
1015	}	1049	}
…		…
1025	#endif	1059	#endif
1026	BOOT_PAGESIZE;	1060	BOOT_PAGESIZE;
1027		1061
1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1062	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029		1063
1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1032	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1066	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1067	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1068	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1033		1069
1034	main_mainstack = PL_mainstack;	1070	main_mainstack = PL_mainstack;
1035		1071
1036	coroapi.ver = CORO_API_VERSION;	1072	coroapi.ver = CORO_API_VERSION;
1037	coroapi.transfer = api_transfer;	1073	coroapi.transfer = api_transfer;
…		…
1047	HV *hv;	1083	HV *hv;
1048	int i;	1084	int i;
1049		1085
1050	Newz (0, coro, 1, struct coro);	1086	Newz (0, coro, 1, struct coro);
1051	coro->args = newAV ();	1087	coro->args = newAV ();
		1088	coro->save = CORO_SAVE_ALL;
		1089	coro->flags = CF_NEW;
1052		1090
1053	hv = newHV ();	1091	hv = newHV ();
1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1092	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));	1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056		1094
1057	for (i = 1; i < items; i++)	1095	for (i = 1; i < items; i++)
1058	av_push (coro->args, newSVsv (ST (i)));	1096	av_push (coro->args, newSVsv (ST (i)));
1059	}	1097	}
1060	OUTPUT:	1098	OUTPUT:
		1099	RETVAL
		1100
		1101	int
		1102	save (SV *coro, int new_save = -1)
		1103	CODE:
		1104	RETVAL = api_save (coro, new_save);
		1105	OUTPUT:
1061	RETVAL	1106	RETVAL
1062		1107
1063	void	1108	void
1064	_set_stacklevel (...)	1109	_set_stacklevel (...)
1065	ALIAS:	1110	ALIAS:
1066	Coro::State::transfer = 1	1111	Coro::State::transfer = 1
1067	Coro::schedule = 2	1112	Coro::schedule = 2
1068	Coro::cede = 3	1113	Coro::cede = 3
1069	Coro::Cont::yield = 4
1070	CODE:	1114	CODE:
1071	{	1115	{
1072	struct transfer_args ta;	1116	struct transfer_args ta;
1073		1117
1074	switch (ix)	1118	switch (ix)
1075	{	1119	{
1076	case 0:	1120	case 0:
1077	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1121	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1078	ta.next = 0;	1122	ta.next = 0;
1079	ta.flags = TRANSFER_SET_STACKLEVEL;
1080	break;	1123	break;
1081		1124
1082	case 1:	1125	case 1:
1083	if (items != 3)	1126	if (items != 2)
1084	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1127	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1085		1128
1086	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1129	prepare_transfer (&ta, ST (0), ST (1));
1087	break;	1130	break;
1088		1131
1089	case 2:	1132	case 2:
1090	prepare_schedule (&ta);	1133	prepare_schedule (&ta);
1091	break;	1134	break;
1092		1135
1093	case 3:	1136	case 3:
1094	prepare_cede (&ta);	1137	prepare_cede (&ta);
1095	break;	1138	break;
1096
1097	case 4:
1098	{
1099	SV *yieldstack;
1100	SV *sv;
1101	AV *defav = GvAV (PL_defgv);
1102
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;
1122
1123	}	1139	}
1124		1140
1125	TRANSFER (ta);	1141	TRANSFER (ta);
1126	}	1142	}
1127		1143
…		…
1171	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1172	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1173	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1174	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1175		1191
1176	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1192	coro_current = get_sv ("Coro::current", FALSE);
1177	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1193	SvREADONLY_on (coro_current);
1178		1194
1179	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1180	coro_ready[i] = newAV ();	1196	coro_ready[i] = newAV ();
1181		1197
1182	{	1198	{
1183	SV *sv = perl_get_sv("Coro::API", 1);	1199	SV *sv = perl_get_sv("Coro::API", 1);
1184		1200
1185	coroapi.schedule = api_schedule;	1201	coroapi.schedule = api_schedule;
		1202	coroapi.save = api_save;
1186	coroapi.cede = api_cede;	1203	coroapi.cede = api_cede;
1187	coroapi.ready = api_ready;	1204	coroapi.ready = api_ready;
1188	coroapi.is_ready = api_is_ready;	1205	coroapi.is_ready = api_is_ready;
1189	coroapi.nready = &coro_nready;	1206	coroapi.nready = &coro_nready;
1190	coroapi.current = coro_current;	1207	coroapi.current = coro_current;
…		…
1193	sv_setiv (sv, (IV)&coroapi);	1210	sv_setiv (sv, (IV)&coroapi);
1194	SvREADONLY_on (sv);	1211	SvREADONLY_on (sv);
1195	}	1212	}
1196	}	1213	}
1197		1214
		1215	void
		1216	_set_current (SV *current)
		1217	PROTOTYPE: $
		1218	CODE:
		1219	SvREFCNT_dec (SvRV (coro_current));
		1220	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1221
1198	int	1222	int
1199	prio (Coro::State coro, int newprio = 0)	1223	prio (Coro::State coro, int newprio = 0)
1200	ALIAS:	1224	ALIAS:
1201	nice = 1	1225	nice = 1
1202	CODE:	1226	CODE:
…		…
1204	RETVAL = coro->prio;	1228	RETVAL = coro->prio;
1205		1229
1206	if (items > 1)	1230	if (items > 1)
1207	{	1231	{
1208	if (ix)	1232	if (ix)
1209	newprio += coro->prio;	1233	newprio = coro->prio - newprio;
1210		1234
1211	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1235	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1212	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1236	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1213		1237
1214	coro->prio = newprio;	1238	coro->prio = newprio;
1215	}	1239	}
1216	}	1240	}
		1241	OUTPUT:
		1242	RETVAL
1217		1243
1218	SV *	1244	SV *
1219	ready (SV *self)	1245	ready (SV *self)
1220	PROTOTYPE: $	1246	PROTOTYPE: $
1221	CODE:	1247	CODE:
…		…
1243		1269
1244	SV *	1270	SV *
1245	_get_state ()	1271	_get_state ()
1246	CODE:	1272	CODE:
1247	{	1273	{
1248	struct {	1274	struct io_state *data;
1249	int errorno;
1250	int laststype;
1251	int laststatval;
1252	Stat_t statcache;
1253	} data;
1254		1275
		1276	RETVAL = newSV (sizeof (struct io_state));
		1277	data = (struct io_state *)SvPVX (RETVAL);
		1278	SvCUR_set (RETVAL, sizeof (struct io_state));
		1279	SvPOK_only (RETVAL);
		1280
1255	data.errorno = errno;	1281	data->errorno = errno;
1256	data.laststype = PL_laststype;	1282	data->laststype = PL_laststype;
1257	data.laststatval = PL_laststatval;	1283	data->laststatval = PL_laststatval;
1258	data.statcache = PL_statcache;	1284	data->statcache = PL_statcache;
1259
1260	RETVAL = newSVpvn ((char *)&data, sizeof data);
1261	}	1285	}
1262	OUTPUT:	1286	OUTPUT:
1263	RETVAL	1287	RETVAL
1264		1288
1265	void	1289	void
1266	_set_state (char *data_)	1290	_set_state (char *data_)
1267	PROTOTYPE: $	1291	PROTOTYPE: $
1268	CODE:	1292	CODE:
1269	{	1293	{
1270	struct {	1294	struct io_state data = (void )data_;
1271	int errorno;
1272	int laststype;
1273	int laststatval;
1274	Stat_t statcache;
1275	} data = (void )data_;
1276		1295
1277	errno = data->errorno;	1296	errno = data->errorno;
1278	PL_laststype = data->laststype;	1297	PL_laststype = data->laststype;
1279	PL_laststatval = data->laststatval;	1298	PL_laststatval = data->laststatval;
1280	PL_statcache = data->statcache;	1299	PL_statcache = data->statcache;
1281	}	1300	}
		1301

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Comparing Coro/Coro/State.xs (file contents): Revision 1.115 by root, Fri Dec 1 13:36:08 2006 UTC vs. Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.115 by root, Fri Dec 1 13:36:08 2006 UTC vs.
Revision 1.130 by root, Mon Dec 25 13:25:55 2006 UTC