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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.114 by root, Thu Nov 30 21:22:45 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	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	9	#include <stdio.h>
41	#include <errno.h>	10	#include <errno.h>
42		11	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		12
51	#ifdef HAVE_MMAP	13	#ifdef HAVE_MMAP
52	# include <unistd.h>	14	# include <unistd.h>
53	# include <sys/mman.h>	15	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	16	# ifndef MAP_ANONYMOUS
…		…
69	#else	31	#else
70	# define PAGESIZE 0	32	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
72	#endif	34	#endif
73		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
74	/* 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
75	* 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
76	* and should be unique. */	90	* and should be unique. */
77	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
79		93
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		95
82	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	99	#else
85	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
86	#endif	102	#endif
87		103
88	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
89		105
90	#include "CoroAPI.h"	106	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		107
94	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	112	#else
99	# define LOCK (void)0	113	# define LOCK (void)0
100	# define UNLOCK (void)0	114	# define UNLOCK (void)0
101	#endif	115	#endif
102		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
103	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	127	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
107		129
…		…
115	/* the stack */	137	/* the stack */
116	void *sptr;	138	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
118		140
119	/* cpu state */	141	/* cpu state */
120	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 */
121	JMPENV *top_env;	144	JMPENV *top_env;
122	coro_context cctx;	145	coro_context cctx;
123		146
124	int inuse;	147	int inuse;
125		148
…		…
127	int valgrind_id;	150	int valgrind_id;
128	#endif	151	#endif
129	} coro_cctx;	152	} coro_cctx;
130		153
131	enum {	154	enum {
132	CF_RUNNING, /* coroutine is running */	155	CF_RUNNING = 0x0001, /* coroutine is running */
133	CF_READY, /* coroutine is ready */	156	CF_READY = 0x0002, /* coroutine is ready */
		157	CF_NEW = 0x0004, /* ahs never been switched to */
134	};	158	};
135		159
136	/* this is a structure representing a perl-level coroutine */	160	/* this is a structure representing a perl-level coroutine */
137	struct coro {	161	struct coro {
138	/* the c coroutine allocated to this perl coroutine, if any */	162	/* the c coroutine allocated to this perl coroutine, if any */
139	coro_cctx *cctx;	163	coro_cctx *cctx;
140		164
141	/* data associated with this coroutine (initial args) */	165	/* data associated with this coroutine (initial args) */
142	AV *args;	166	AV *args;
143	int refcnt;	167	int refcnt;
144	int flags;	168	int save; /* CORO_SAVE flags */
		169	int flags; /* CF_ flags */
145		170
146	/* optionally saved, might be zero */	171	/* optionally saved, might be zero */
147	AV *defav;	172	AV defav; / @_ */
148	SV *defsv;	173	SV defsv; / $_ */
149	SV *errsv;	174	SV errsv; / $@ */
		175	SV irssv; / $/ */
		176	SV irssv_sv; / real $/ cache */
150		177
151	#define VAR(name,type) type name;	178	#define VAR(name,type) type name;
152	# include "state.h"	179	# include "state.h"
153	#undef VAR	180	#undef VAR
154		181
…		…
240		267
241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	270	else
244	{	271	{
245	#if 0	272	#if PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	273	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	274	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	275	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	276	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	277	SvREFCNT_dec (cp);
…		…
277	}	304	}
278		305
279	#define SB do {	306	#define SB do {
280	#define SE } while (0)	307	#define SE } while (0)
281		308
282	#define LOAD(state) load_state((state));
283	#define SAVE(state,flags) save_state((state),(flags));
284
285	#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
286		310
287	static void	311	static void
288	load_state(Coro__State c)	312	load_perl (Coro__State c)
289	{	313	{
290	#define VAR(name,type) PL_ ## name = c->name;	314	#define VAR(name,type) PL_ ## name = c->name;
291	# include "state.h"	315	# include "state.h"
292	#undef VAR	316	#undef VAR
293		317
294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
296	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	}
297		332
298	{	333	{
299	dSP;	334	dSP;
300	CV *cv;	335	CV *cv;
301		336
…		…
310	PUTBACK;	345	PUTBACK;
311	}	346	}
312	}	347	}
313		348
314	static void	349	static void
315	save_state(Coro__State c, int flags)	350	save_perl (Coro__State c)
316	{	351	{
317	{	352	{
318	dSP;	353	dSP;
319	I32 cxix = cxstack_ix;	354	I32 cxix = cxstack_ix;
320	PERL_CONTEXT *ccstk = cxstack;	355	PERL_CONTEXT *ccstk = cxstack;
…		…
323	/*	358	/*
324	* 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
325	* (and reinitialize) all cv's in the whole callchain :(	360	* (and reinitialize) all cv's in the whole callchain :(
326	*/	361	*/
327		362
		363	EXTEND (SP, 3 + 1);
328	PUSHs (Nullsv);	364	PUSHs (Nullsv);
329	/* this loop was inspired by pp_caller */	365	/* this loop was inspired by pp_caller */
330	for (;;)	366	for (;;)
331	{	367	{
332	while (cxix >= 0)	368	while (cxix >= 0)
333	{	369	{
334	PERL_CONTEXT *cx = &ccstk[cxix--];	370	PERL_CONTEXT *cx = &ccstk[cxix--];
335		371
336	if (CxTYPE(cx) == CXt_SUB)	372	if (CxTYPE (cx) == CXt_SUB)
337	{	373	{
338	CV *cv = cx->blk_sub.cv;	374	CV *cv = cx->blk_sub.cv;
339		375
340	if (CvDEPTH (cv))	376	if (CvDEPTH (cv))
341	{	377	{
342	EXTEND (SP, 3);	378	EXTEND (SP, 3);
343
344	PUSHs ((SV *)CvPADLIST(cv));	379	PUSHs ((SV *)CvPADLIST (cv));
345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
346	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
347		382
348	CvDEPTH (cv) = 0;	383	CvDEPTH (cv) = 0;
349	get_padlist (cv);	384	get_padlist (cv);
350	}	385	}
351	}	386	}
352	#ifdef CXt_FORMAT
353	else if (CxTYPE(cx) == CXt_FORMAT)
354	{
355	/* I never used formats, so how should I know how these are implemented? */
356	/* my bold guess is as a simple, plain sub... */
357	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
358	}
359	#endif
360	}	387	}
361		388
362	if (top_si->si_type == PERLSI_MAIN)	389	if (top_si->si_type == PERLSI_MAIN)
363	break;	390	break;
364		391
…		…
368	}	395	}
369		396
370	PUTBACK;	397	PUTBACK;
371	}	398	}
372		399
373	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;
374	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
375	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;
376		404
377	#define VAR(name,type)c->name = PL_ ## name;	405	#define VAR(name,type)c->name = PL_ ## name;
378	# include "state.h"	406	# include "state.h"
379	#undef VAR	407	#undef VAR
380	}	408	}
…		…
383	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
384	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
385	* on the (sometimes correct) assumption that coroutines do	413	* on the (sometimes correct) assumption that coroutines do
386	* not usually need a lot of stackspace.	414	* not usually need a lot of stackspace.
387	*/	415	*/
		416	#if PREFER_PERL_FUNCTIONS
		417	# define coro_init_stacks init_stacks
		418	#else
388	static void	419	static void
389	coro_init_stacks ()	420	coro_init_stacks ()
390	{	421	{
391	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
392	PL_curstackinfo->si_type = PERLSI_MAIN;	423	PL_curstackinfo->si_type = PERLSI_MAIN;
393	PL_curstack = PL_curstackinfo->si_stack;	424	PL_curstack = PL_curstackinfo->si_stack;
394	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395		426
396	PL_stack_base = AvARRAY(PL_curstack);	427	PL_stack_base = AvARRAY(PL_curstack);
397	PL_stack_sp = PL_stack_base;	428	PL_stack_sp = PL_stack_base;
398	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399		430
400	New(50,PL_tmps_stack,96,SV*);	431	New(50,PL_tmps_stack,128,SV*);
401	PL_tmps_floor = -1;	432	PL_tmps_floor = -1;
402	PL_tmps_ix = -1;	433	PL_tmps_ix = -1;
403	PL_tmps_max = 96;	434	PL_tmps_max = 128;
404		435
405	New(54,PL_markstack,16,I32);	436	New(54,PL_markstack,32,I32);
406	PL_markstack_ptr = PL_markstack;	437	PL_markstack_ptr = PL_markstack;
407	PL_markstack_max = PL_markstack + 16;	438	PL_markstack_max = PL_markstack + 32;
408		439
409	#ifdef SET_MARK_OFFSET	440	#ifdef SET_MARK_OFFSET
410	SET_MARK_OFFSET;	441	SET_MARK_OFFSET;
411	#endif	442	#endif
412		443
413	New(54,PL_scopestack,16,I32);	444	New(54,PL_scopestack,32,I32);
414	PL_scopestack_ix = 0;	445	PL_scopestack_ix = 0;
415	PL_scopestack_max = 16;	446	PL_scopestack_max = 32;
416		447
417	New(54,PL_savestack,96,ANY);	448	New(54,PL_savestack,64,ANY);
418	PL_savestack_ix = 0;	449	PL_savestack_ix = 0;
419	PL_savestack_max = 96;	450	PL_savestack_max = 64;
420		451
421	#if !PERL_VERSION_ATLEAST (5,9,0)	452	#if !PERL_VERSION_ATLEAST (5,9,0)
422	New(54,PL_retstack,8,OP*);	453	New(54,PL_retstack,16,OP*);
423	PL_retstack_ix = 0;	454	PL_retstack_ix = 0;
424	PL_retstack_max = 8;	455	PL_retstack_max = 16;
425	#endif	456	#endif
426	}	457	}
		458	#endif
427		459
428	/*	460	/*
429	* destroy the stacks, the callchain etc...	461	* destroy the stacks, the callchain etc...
430	*/	462	*/
431	static void	463	static void
432	coro_destroy_stacks ()	464	coro_destroy_stacks ()
433	{	465	{
434	if (!IN_DESTRUCT)	466	if (!IN_DESTRUCT)
435	{	467	{
436	/* is this ugly, I ask? */	468	/* restore all saved variables and stuff */
437	LEAVE_SCOPE (0);	469	LEAVE_SCOPE (0);
		470	assert (PL_tmps_floor == -1);
438		471
439	/* sure it is, but more important: is it correct?? :/ */	472	/* free all temporaries */
440	FREETMPS;	473	FREETMPS;
		474	assert (PL_tmps_ix == -1);
441		475
442	/POPSTACK_TO (PL_mainstack);//D//use/	476	POPSTACK_TO (PL_mainstack);
443	}	477	}
444		478
445	while (PL_curstackinfo->si_next)	479	while (PL_curstackinfo->si_next)
446	PL_curstackinfo = PL_curstackinfo->si_next;	480	PL_curstackinfo = PL_curstackinfo->si_next;
447		481
448	while (PL_curstackinfo)	482	while (PL_curstackinfo)
449	{	483	{
450	PERL_SI *p = PL_curstackinfo->si_prev;	484	PERL_SI *p = PL_curstackinfo->si_prev;
451		485
452	{ /D//remove/
453	dSP;
454	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455	PUTBACK; /* possibly superfluous */
456	}
457
458	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
459	{
460	dounwind (-1);/D//remove/
461	SvREFCNT_dec (PL_curstackinfo->si_stack);	487	SvREFCNT_dec (PL_curstackinfo->si_stack);
462	}
463		488
464	Safefree (PL_curstackinfo->si_cxstack);	489	Safefree (PL_curstackinfo->si_cxstack);
465	Safefree (PL_curstackinfo);	490	Safefree (PL_curstackinfo);
466	PL_curstackinfo = p;	491	PL_curstackinfo = p;
467	}	492	}
…		…
482	* emulate part of the perl startup here.	507	* emulate part of the perl startup here.
483	*/	508	*/
484		509
485	coro_init_stacks ();	510	coro_init_stacks ();
486		511
487	PL_curcop = 0;	512	PL_curcop = &PL_compiling;
488	PL_in_eval = 0;	513	PL_in_eval = EVAL_NULL;
489	PL_curpm = 0;	514	PL_curpm = 0;
		515	PL_localizing = 0;
		516	PL_dirty = 0;
		517	PL_restartop = 0;
490		518
491	{	519	{
492	dSP;	520	dSP;
493	LOGOP myop;	521	LOGOP myop;
494		522
495	/* I have no idea why this is needed, but it is */
496	PUSHMARK (SP);
497
498	SvREFCNT_dec (GvAV (PL_defgv));	523	SvREFCNT_dec (GvAV (PL_defgv));
499	GvAV (PL_defgv) = coro->args; coro->args = 0;	524	GvAV (PL_defgv) = coro->args; coro->args = 0;
500		525
501	Zero (&myop, 1, LOGOP);	526	Zero (&myop, 1, LOGOP);
502	myop.op_next = Nullop;	527	myop.op_next = Nullop;
503	myop.op_flags = OPf_WANT_VOID;	528	myop.op_flags = OPf_WANT_VOID;
504		529
505	PL_op = (OP *)&myop;
506
507	PUSHMARK (SP);	530	PUSHMARK (SP);
508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
509	PUTBACK;	532	PUTBACK;
		533	PL_op = (OP *)&myop;
510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511	SPAGAIN;	535	SPAGAIN;
512
513	ENTER; /* necessary e.g. for dounwind */
514	}	536	}
		537
		538	ENTER; /* necessary e.g. for dounwind */
515	}	539	}
516		540
517	static void	541	static void
518	free_coro_mortal ()	542	free_coro_mortal ()
519	{	543	{
…		…
522	SvREFCNT_dec (coro_mortal);	546	SvREFCNT_dec (coro_mortal);
523	coro_mortal = 0;	547	coro_mortal = 0;
524	}	548	}
525	}	549	}
526		550
		551	/* inject a fake call to Coro::State::_cctx_init into the execution */
527	static void NOINLINE	552	static void NOINLINE
528	prepare_cctx (coro_cctx *cctx)	553	prepare_cctx (coro_cctx *cctx)
529	{	554	{
530	dSP;	555	dSP;
531	LOGOP myop;	556	LOGOP myop;
532		557
533	Zero (&myop, 1, LOGOP);	558	Zero (&myop, 1, LOGOP);
534	myop.op_next = PL_op;	559	myop.op_next = PL_op;
535	myop.op_flags = OPf_WANT_VOID;	560	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
536
537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538		561
539	PUSHMARK (SP);	562	PUSHMARK (SP);
		563	EXTEND (SP, 2);
		564	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	565	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541	PUTBACK;	566	PUTBACK;
		567	PL_op = (OP *)&myop;
542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543	SPAGAIN;	569	SPAGAIN;
544	}	570	}
545		571
546	static void	572	static void
547	coro_run (void *arg)	573	coro_run (void *arg)
548	{	574	{
549	/* coro_run is the alternative epilogue of transfer() */	575	/* coro_run is the alternative tail of transfer(), so unlock here. */
550	UNLOCK;	576	UNLOCK;
551		577
552	/*	578	/*
553	* this is a _very_ stripped down perl interpreter ;)	579	* this is a _very_ stripped down perl interpreter ;)
554	*/	580	*/
…		…
556		582
557	/* inject call to cctx_init */	583	/* inject call to cctx_init */
558	prepare_cctx ((coro_cctx *)arg);	584	prepare_cctx ((coro_cctx *)arg);
559		585
560	/* 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;
561	perl_run (PL_curinterp);	588	perl_run (PL_curinterp);
562		589
563	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);
564	abort ();	591	abort ();
565	}	592	}
…		…
569	{	596	{
570	coro_cctx *cctx;	597	coro_cctx *cctx;
571		598
572	++cctx_count;	599	++cctx_count;
573		600
574	New (0, cctx, 1, coro_cctx);	601	Newz (0, cctx, 1, coro_cctx);
575		602
576	#if HAVE_MMAP	603	#if HAVE_MMAP
577		604
578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
579	/* mmap suppsedly does allocate-on-write for us */	606	/* mmap supposedly does allocate-on-write for us */
580	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);
581		608
582	if (cctx->sptr == (void *)-1)	609	if (cctx->sptr == (void *)-1)
583	{	610	{
584	perror ("FATAL: unable to mmap stack for coroutine");	611	perror ("FATAL: unable to mmap stack for coroutine");
…		…
613		640
614	return cctx;	641	return cctx;
615	}	642	}
616		643
617	static void	644	static void
618	cctx_free (coro_cctx *cctx)	645	cctx_destroy (coro_cctx *cctx)
619	{	646	{
620	if (!cctx)	647	if (!cctx)
621	return;	648	return;
622		649
623	--cctx_count;	650	--cctx_count;
…		…
640	{	667	{
641	coro_cctx *cctx;	668	coro_cctx *cctx;
642		669
643	if (cctx_first)	670	if (cctx_first)
644	{	671	{
645	--cctx_idle;
646	cctx = cctx_first;	672	cctx = cctx_first;
647	cctx_first = cctx->next;	673	cctx_first = cctx->next;
		674	--cctx_idle;
648	}	675	}
649	else	676	else
650	{	677	{
651	cctx = cctx_new ();	678	cctx = cctx_new ();
652	PL_op = PL_op->op_next;	679	PL_op = PL_op->op_next;
…		…
656	}	683	}
657		684
658	static void	685	static void
659	cctx_put (coro_cctx *cctx)	686	cctx_put (coro_cctx *cctx)
660	{	687	{
		688	/* free another cctx if overlimit */
		689	if (cctx_idle >= MAX_IDLE_CCTX)
		690	{
		691	coro_cctx *first = cctx_first;
		692	cctx_first = first->next;
		693	--cctx_idle;
		694
		695	assert (!first->inuse);
		696	cctx_destroy (first);
		697	}
		698
661	++cctx_idle;	699	++cctx_idle;
662	cctx->next = cctx_first;	700	cctx->next = cctx_first;
663	cctx_first = cctx;	701	cctx_first = cctx;
664	}	702	}
665		703
666	/* never call directly, always through the coro_state_transfer global variable */	704	/* never call directly, always through the coro_state_transfer global variable */
667	static void NOINLINE	705	static void NOINLINE
668	transfer (struct coro prev, struct coro next, int flags)	706	transfer (struct coro prev, struct coro next)
669	{	707	{
670	dSTACKLEVEL;	708	dSTACKLEVEL;
671		709
672	/* sometimes transfer is only called to set idle_sp */	710	/* sometimes transfer is only called to set idle_sp */
673	if (flags == TRANSFER_SET_STACKLEVEL)	711	if (!next)
		712	{
674	((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	}
675	else if (prev != next)	716	else if (prev != next)
676	{	717	{
677	coro_cctx *prev__cctx;	718	coro_cctx *prev__cctx;
678		719
679	if (!prev->cctx)	720	if (prev->flags & CF_NEW)
680	{	721	{
681	/* create a new empty context */	722	/* create a new empty context */
682	Newz (0, prev->cctx, 1, coro_cctx);	723	Newz (0, prev->cctx, 1, coro_cctx);
683	prev->cctx->inuse = 1;	724	prev->cctx->inuse = 1;
		725	prev->flags &= ~CF_NEW;
684	prev->flags \|= CF_RUNNING;	726	prev->flags \|= CF_RUNNING;
685	}	727	}
686		728
		729	/TODO: must not croak here /
687	if (!prev->flags & CF_RUNNING)	730	if (!prev->flags & CF_RUNNING)
688	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	731	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
689		732
690	if (next->flags & CF_RUNNING)	733	if (next->flags & CF_RUNNING)
691	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	734	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
…		…
693	prev->flags &= ~CF_RUNNING;	736	prev->flags &= ~CF_RUNNING;
694	next->flags \|= CF_RUNNING;	737	next->flags \|= CF_RUNNING;
695		738
696	LOCK;	739	LOCK;
697		740
698	if (next->mainstack)	741	if (next->flags & CF_NEW)
699	{	742	{
700	/* coroutine already started */	743	/* need to start coroutine */
701	SAVE (prev, flags);	744	next->flags &= ~CF_NEW;
702	LOAD (next);	745	/* first get rid of the old state */
		746	save_perl (prev);
		747	/* setup coroutine call */
		748	setup_coro (next);
		749	/* need a new stack */
		750	assert (!next->cctx);
703	}	751	}
704	else	752	else
705	{	753	{
706	/* need to start coroutine */	754	/* coroutine already started */
707	/* first get rid of the old state */	755	save_perl (prev);
708	SAVE (prev, -1);	756	load_perl (next);
709	/* setup coroutine call */
710	setup_coro (next);
711	/* need a new stack */
712	assert (!next->stack);
713	}	757	}
714		758
715	prev__cctx = prev->cctx;	759	prev__cctx = prev->cctx;
716		760
717	/* possibly "free" the cctx */	761	/* possibly "free" the cctx */
718	if (prev__cctx->idle_sp == STACKLEVEL)	762	if (prev__cctx->idle_sp == STACKLEVEL)
719	{	763	{
720	/* 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 */
721	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));
		766
		767	prev->cctx = 0;
722		768
723	cctx_put (prev__cctx);	769	cctx_put (prev__cctx);
724	prev->cctx = 0;	770	prev__cctx->inuse = 0;
725	}	771	}
726		772
727	if (!next->cctx)	773	if (!next->cctx)
		774	{
728	next->cctx = cctx_get ();	775	next->cctx = cctx_get ();
		776	assert (!next->cctx->inuse);
		777	next->cctx->inuse = 1;
		778	}
729		779
730	if (prev__cctx != next->cctx)	780	if (prev__cctx != next->cctx)
731	{	781	{
732	assert ( prev__cctx->inuse);
733	assert (!next->cctx->inuse);
734
735	prev__cctx->inuse = 0;
736	next->cctx->inuse = 1;
737
738	prev__cctx->top_env = PL_top_env;	782	prev__cctx->top_env = PL_top_env;
739	PL_top_env = next->cctx->top_env;	783	PL_top_env = next->cctx->top_env;
740	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	784	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
741	}	785	}
742		786
…		…
747	}	791	}
748		792
749	struct transfer_args	793	struct transfer_args
750	{	794	{
751	struct coro prev, next;	795	struct coro prev, next;
752	int flags;
753	};	796	};
754		797
755	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
756		799
757	static void	800	static void
758	coro_state_destroy (struct coro *coro)	801	coro_state_destroy (struct coro *coro)
759	{	802	{
760	if (coro->refcnt--)	803	if (coro->refcnt--)
761	return;	804	return;
762		805
763	if (coro->flags & CF_RUNNING)
764	croak ("FATAL: tried to destroy currently running coroutine");
765
766	if (coro->mainstack && coro->mainstack != main_mainstack)	806	if (coro->mainstack && coro->mainstack != main_mainstack)
767	{	807	{
768	struct coro temp;	808	struct coro temp;
		809	Zero (&temp, 1, struct coro);
		810	temp.save = CORO_SAVE_ALL;
769		811
770	SAVE ((&temp), TRANSFER_SAVE_ALL);	812	if (coro->flags & CF_RUNNING)
771	LOAD (coro);	813	croak ("FATAL: tried to destroy currently running coroutine");
		814
		815	save_perl (&temp);
		816	load_perl (coro);
772		817
773	coro_destroy_stacks ();	818	coro_destroy_stacks ();
774		819
775	LOAD ((&temp)); /* this will get rid of defsv etc.. */	820	load_perl (&temp); /* this will get rid of defsv etc.. */
776		821
777	coro->mainstack = 0;	822	coro->mainstack = 0;
778	}	823	}
779		824
780	cctx_free (coro->cctx);	825	cctx_destroy (coro->cctx);
781	SvREFCNT_dec (coro->args);	826	SvREFCNT_dec (coro->args);
782	Safefree (coro);	827	Safefree (coro);
783	}	828	}
784		829
785	static int	830	static int
…		…
835	assert (mg->mg_type == PERL_MAGIC_ext);	880	assert (mg->mg_type == PERL_MAGIC_ext);
836	return (struct coro *)mg->mg_ptr;	881	return (struct coro *)mg->mg_ptr;
837	}	882	}
838		883
839	static void	884	static void
840	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)
841	{	886	{
842	ta->prev = SvSTATE (prev);	887	ta->prev = SvSTATE (prev_sv);
843	ta->next = SvSTATE (next);	888	ta->next = SvSTATE (next_sv);
844	ta->flags = flags;
845	}	889	}
846		890
847	static void	891	static void
848	api_transfer (SV prev, SV next, int flags)	892	api_transfer (SV prev_sv, SV next_sv)
849	{	893	{
850	dTHX;
851	struct transfer_args ta;	894	struct transfer_args ta;
852		895
853	prepare_transfer (&ta, prev, next, flags);	896	prepare_transfer (&ta, prev_sv, next_sv);
854	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;
855	}	910	}
856		911
857	/ Coro ******************************************************************/	912	/ Coro ******************************************************************/
858		913
859	#define PRIO_MAX 3	914	#define PRIO_MAX 3
…		…
862	#define PRIO_LOW -1	917	#define PRIO_LOW -1
863	#define PRIO_IDLE -3	918	#define PRIO_IDLE -3
864	#define PRIO_MIN -4	919	#define PRIO_MIN -4
865		920
866	/* for Coro.pm */	921	/* for Coro.pm */
867	static GV coro_current, coro_idle;	922	static SV *coro_current;
868	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
869	static int coro_nready;	924	static int coro_nready;
870		925
871	static void	926	static void
872	coro_enq (SV *coro_sv)	927	coro_enq (SV *coro_sv)
…		…
905	coro = SvSTATE (coro_sv);	960	coro = SvSTATE (coro_sv);
906		961
907	if (coro->flags & CF_READY)	962	if (coro->flags & CF_READY)
908	return 0;	963	return 0;
909		964
910	if (coro->flags & CF_RUNNING)
911	croak ("Coro::ready called on currently running coroutine");
912
913	coro->flags \|= CF_READY;	965	coro->flags \|= CF_READY;
914		966
915	LOCK;	967	LOCK;
916	coro_enq (SvREFCNT_inc (coro_sv));	968	coro_enq (SvREFCNT_inc (coro_sv));
917	UNLOCK;	969	UNLOCK;
…		…
920	}	972	}
921		973
922	static int	974	static int
923	api_is_ready (SV *coro_sv)	975	api_is_ready (SV *coro_sv)
924	{	976	{
925	return !!SvSTATE (coro_sv)->flags & CF_READY;	977	return !!(SvSTATE (coro_sv)->flags & CF_READY);
926	}	978	}
927		979
928	static void	980	static void
929	prepare_schedule (struct transfer_args *ta)	981	prepare_schedule (struct transfer_args *ta)
930	{	982	{
931	SV current, prev, *next;	983	SV prev, next;
932
933	current = GvSV (coro_current);
934		984
935	for (;;)	985	for (;;)
936	{	986	{
937	LOCK;	987	LOCK;
938	next = coro_deq (PRIO_MIN);	988	next = coro_deq (PRIO_MIN);
…		…
947	ENTER;	997	ENTER;
948	SAVETMPS;	998	SAVETMPS;
949		999
950	PUSHMARK (SP);	1000	PUSHMARK (SP);
951	PUTBACK;	1001	PUTBACK;
952	call_sv (GvSV (coro_idle), G_DISCARD);	1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
953		1003
954	FREETMPS;	1004	FREETMPS;
955	LEAVE;	1005	LEAVE;
956	}	1006	}
957	}	1007	}
958		1008
959	prev = SvRV (current);	1009	prev = SvRV (coro_current);
960	SvRV (current) = next;	1010	SvRV_set (coro_current, next);
961		1011
962	/* free this only after the transfer */	1012	/* free this only after the transfer */
963	LOCK;	1013	LOCK;
964	free_coro_mortal ();	1014	free_coro_mortal ();
965	UNLOCK;	1015	UNLOCK;
966	coro_mortal = prev;	1016	coro_mortal = prev;
967		1017
		1018	assert (!SvROK(prev));//D
		1019	assert (!SvROK(next));//D
		1020
968	ta->prev = SvSTATE (prev);	1021	ta->prev = SvSTATE (prev);
969	ta->next = SvSTATE (next);	1022	ta->next = SvSTATE (next);
970	ta->flags = TRANSFER_SAVE_ALL;
971		1023
		1024	assert (ta->next->flags & CF_READY);
972	ta->next->flags &= ~CF_READY;	1025	ta->next->flags &= ~CF_READY;
973	}	1026	}
974		1027
975	static void	1028	static void
976	prepare_cede (struct transfer_args *ta)	1029	prepare_cede (struct transfer_args *ta)
977	{	1030	{
978	api_ready (GvSV (coro_current));	1031	api_ready (coro_current);
979
980	prepare_schedule (ta);	1032	prepare_schedule (ta);
981	}	1033	}
982		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;
		1047	}
		1048
983	static void	1049	static void
984	api_schedule (void)	1050	api_schedule (void)
985	{	1051	{
986	dTHX;
987	struct transfer_args ta;	1052	struct transfer_args ta;
988		1053
989	prepare_schedule (&ta);	1054	prepare_schedule (&ta);
990	TRANSFER (ta);	1055	TRANSFER (ta);
991	}	1056	}
992		1057
993	static void	1058	static int
994	api_cede (void)	1059	api_cede (void)
995	{	1060	{
996	dTHX;
997	struct transfer_args ta;	1061	struct transfer_args ta;
998		1062
999	prepare_cede (&ta);	1063	prepare_cede (&ta);
		1064
		1065	if (ta.prev != ta.next)
		1066	{
1000	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;
1001	}	1086	}
1002		1087
1003	MODULE = Coro::State PACKAGE = Coro::State	1088	MODULE = Coro::State PACKAGE = Coro::State
1004		1089
1005	PROTOTYPES: DISABLE	1090	PROTOTYPES: DISABLE
…		…
1011	#endif	1096	#endif
1012	BOOT_PAGESIZE;	1097	BOOT_PAGESIZE;
1013		1098
1014	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1015		1100
1016	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1017	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1018	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));
1019		1106
1020	main_mainstack = PL_mainstack;	1107	main_mainstack = PL_mainstack;
1021		1108
1022	coroapi.ver = CORO_API_VERSION;	1109	coroapi.ver = CORO_API_VERSION;
1023	coroapi.transfer = api_transfer;	1110	coroapi.transfer = api_transfer;
…		…
1033	HV *hv;	1120	HV *hv;
1034	int i;	1121	int i;
1035		1122
1036	Newz (0, coro, 1, struct coro);	1123	Newz (0, coro, 1, struct coro);
1037	coro->args = newAV ();	1124	coro->args = newAV ();
		1125	coro->save = CORO_SAVE_ALL;
		1126	coro->flags = CF_NEW;
1038		1127
1039	hv = newHV ();	1128	hv = newHV ();
1040	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;
1041	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1042		1131
1043	for (i = 1; i < items; i++)	1132	for (i = 1; i < items; i++)
1044	av_push (coro->args, newSVsv (ST (i)));	1133	av_push (coro->args, newSVsv (ST (i)));
1045	}	1134	}
1046	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:
1047	RETVAL	1143	RETVAL
1048		1144
1049	void	1145	void
1050	_set_stacklevel (...)	1146	_set_stacklevel (...)
1051	ALIAS:	1147	ALIAS:
1052	Coro::State::transfer = 1	1148	Coro::State::transfer = 1
1053	Coro::schedule = 2	1149	Coro::schedule = 2
1054	Coro::cede = 3	1150	Coro::cede = 3
1055	Coro::Cont::yield = 4	1151	Coro::cede_notself = 4
1056	CODE:	1152	CODE:
1057	{	1153	{
1058	struct transfer_args ta;	1154	struct transfer_args ta;
1059		1155
1060	switch (ix)	1156	switch (ix)
1061	{	1157	{
1062	case 0:	1158	case 0:
1063	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1159	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1064	ta.next = 0;	1160	ta.next = 0;
1065	ta.flags = TRANSFER_SET_STACKLEVEL;
1066	break;	1161	break;
1067		1162
1068	case 1:	1163	case 1:
1069	if (items != 3)	1164	if (items != 2)
1070	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);
1071		1166
1072	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1167	prepare_transfer (&ta, ST (0), ST (1));
1073	break;	1168	break;
1074		1169
1075	case 2:	1170	case 2:
1076	prepare_schedule (&ta);	1171	prepare_schedule (&ta);
1077	break;	1172	break;
…		…
1079	case 3:	1174	case 3:
1080	prepare_cede (&ta);	1175	prepare_cede (&ta);
1081	break;	1176	break;
1082		1177
1083	case 4:	1178	case 4:
1084	{	1179	if (!prepare_cede_notself (&ta))
1085	SV *yieldstack;	1180	XSRETURN_EMPTY;
1086	SV *sv;
1087	AV *defav = GvAV (PL_defgv);
1088		1181
1089	yieldstack = *hv_fetch (
1090	(HV *)SvRV (GvSV (coro_current)),
1091	"yieldstack", sizeof ("yieldstack") - 1,
1092	0
1093	);
1094
1095	/* set up @_ -- ugly */
1096	av_clear (defav);
1097	av_fill (defav, items - 1);
1098	while (items--)
1099	av_store (defav, items, SvREFCNT_inc (ST(items)));
1100
1101	sv = av_pop ((AV *)SvRV (yieldstack));
1102	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1103	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1104	ta.flags = 0;
1105	SvREFCNT_dec (sv);
1106	}
1107	break;	1182	break;
1108
1109	}	1183	}
1110		1184
		1185	BARRIER;
1111	TRANSFER (ta);	1186	TRANSFER (ta);
1112	}	1187	}
1113		1188
1114	void	1189	void
1115	_clone_state_from (SV dst, SV src)	1190	_clone_state_from (SV dst, SV src)
…		…
1157	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1232	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1158	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1233	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1159	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1234	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1160	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1235	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1161		1236
1162	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1237	coro_current = get_sv ("Coro::current", FALSE);
1163	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1238	SvREADONLY_on (coro_current);
1164		1239
1165	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1240	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1166	coro_ready[i] = newAV ();	1241	coro_ready[i] = newAV ();
1167		1242
1168	{	1243	{
1169	SV *sv = perl_get_sv("Coro::API", 1);	1244	SV *sv = perl_get_sv("Coro::API", 1);
1170		1245
1171	coroapi.schedule = api_schedule;	1246	coroapi.schedule = api_schedule;
		1247	coroapi.save = api_save;
1172	coroapi.cede = api_cede;	1248	coroapi.cede = api_cede;
		1249	coroapi.cede_notself = api_cede_notself;
1173	coroapi.ready = api_ready;	1250	coroapi.ready = api_ready;
1174	coroapi.is_ready = api_is_ready;	1251	coroapi.is_ready = api_is_ready;
1175	coroapi.nready = &coro_nready;	1252	coroapi.nready = &coro_nready;
1176	coroapi.current = coro_current;	1253	coroapi.current = coro_current;
1177		1254
1178	GCoroAPI = &coroapi;	1255	GCoroAPI = &coroapi;
1179	sv_setiv (sv, (IV)&coroapi);	1256	sv_setiv (sv, (IV)&coroapi);
1180	SvREADONLY_on (sv);	1257	SvREADONLY_on (sv);
1181	}	1258	}
1182	}	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)));
1183		1267
1184	int	1268	int
1185	prio (Coro::State coro, int newprio = 0)	1269	prio (Coro::State coro, int newprio = 0)
1186	ALIAS:	1270	ALIAS:
1187	nice = 1	1271	nice = 1
…		…
1190	RETVAL = coro->prio;	1274	RETVAL = coro->prio;
1191		1275
1192	if (items > 1)	1276	if (items > 1)
1193	{	1277	{
1194	if (ix)	1278	if (ix)
1195	newprio += coro->prio;	1279	newprio = coro->prio - newprio;
1196		1280
1197	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1281	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1198	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1282	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1199		1283
1200	coro->prio = newprio;	1284	coro->prio = newprio;
1201	}	1285	}
1202	}	1286	}
		1287	OUTPUT:
		1288	RETVAL
1203		1289
1204	SV *	1290	SV *
1205	ready (SV *self)	1291	ready (SV *self)
1206	PROTOTYPE: $	1292	PROTOTYPE: $
1207	CODE:	1293	CODE:
…		…
1229		1315
1230	SV *	1316	SV *
1231	_get_state ()	1317	_get_state ()
1232	CODE:	1318	CODE:
1233	{	1319	{
1234	struct {	1320	struct io_state *data;
1235	int errorno;
1236	int laststype;
1237	int laststatval;
1238	Stat_t statcache;
1239	} data;
1240		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
1241	data.errorno = errno;	1327	data->errorno = errno;
1242	data.laststype = PL_laststype;	1328	data->laststype = PL_laststype;
1243	data.laststatval = PL_laststatval;	1329	data->laststatval = PL_laststatval;
1244	data.statcache = PL_statcache;	1330	data->statcache = PL_statcache;
1245
1246	RETVAL = newSVpvn ((char *)&data, sizeof data);
1247	}	1331	}
1248	OUTPUT:	1332	OUTPUT:
1249	RETVAL	1333	RETVAL
1250		1334
1251	void	1335	void
1252	_set_state (char *data_)	1336	_set_state (char *data_)
1253	PROTOTYPE: $	1337	PROTOTYPE: $
1254	CODE:	1338	CODE:
1255	{	1339	{
1256	struct {	1340	struct io_state data = (void )data_;
1257	int errorno;
1258	int laststype;
1259	int laststatval;
1260	Stat_t statcache;
1261	} data = (void )data_;
1262		1341
1263	errno = data->errorno;	1342	errno = data->errorno;
1264	PL_laststype = data->laststype;	1343	PL_laststype = data->laststype;
1265	PL_laststatval = data->laststatval;	1344	PL_laststatval = data->laststatval;
1266	PL_statcache = data->statcache;	1345	PL_statcache = data->statcache;
1267	}	1346	}
		1347

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Comparing Coro/Coro/State.xs (file contents): Revision 1.114 by root, Thu Nov 30 21:22:45 2006 UTC vs. Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.114 by root, Thu Nov 30 21:22:45 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC