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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC vs.
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 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	/* helper storage struct for Coro::AIO */
		118	struct io_state
		119	{
		120	int errorno;
		121	I32 laststype;
		122	int laststatval;
		123	Stat_t statcache;
		124	};
		125
103	static struct CoroAPI coroapi;	126	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	127	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	128	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	129	static SV coro_mortal; / will be freed after next transfer */
107		130
…		…
115	/* the stack */	138	/* the stack */
116	void *sptr;	139	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
118		141
119	/* cpu state */	142	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	145	JMPENV *top_env;
122	coro_context cctx;	146	coro_context cctx;
123		147
124	int inuse;	148	int inuse;
125		149
…		…
127	int valgrind_id;	151	int valgrind_id;
128	#endif	152	#endif
129	} coro_cctx;	153	} coro_cctx;
130		154
131	enum {	155	enum {
132	CF_RUNNING, /* coroutine is running */	156	CF_RUNNING = 0x0001, /* coroutine is running */
133	CF_READY, /* coroutine is ready */	157	CF_READY = 0x0002, /* coroutine is ready */
		158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
134	};	160	};
135		161
136	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
137	struct coro {	163	struct coro {
138	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
139	coro_cctx *cctx;	165	coro_cctx *cctx;
140		166
141	/* data associated with this coroutine (initial args) */	167	/* data associated with this coroutine (initial args) */
142	AV *args;	168	AV *args;
143	int refcnt;	169	int refcnt;
144	int flags;	170	int save; /* CORO_SAVE flags */
		171	int flags; /* CF_ flags */
145		172
146	/* optionally saved, might be zero */	173	/* optionally saved, might be zero */
147	AV *defav;	174	AV defav; / @_ */
148	SV *defsv;	175	SV defsv; / $_ */
149	SV *errsv;	176	SV errsv; / $@ */
		177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
150		179
151	#define VAR(name,type) type name;	180	#define VAR(name,type) type name;
152	# include "state.h"	181	# include "state.h"
153	#undef VAR	182	#undef VAR
154		183
…		…
240		269
241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	270	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	271	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	272	else
244	{	273	{
245	#if 0	274	#if PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	275	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	276	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	277	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	278	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	279	SvREFCNT_dec (cp);
…		…
277	}	306	}
278		307
279	#define SB do {	308	#define SB do {
280	#define SE } while (0)	309	#define SE } while (0)
281		310
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	311	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
286		312
287	static void	313	static void
288	load_state(Coro__State c)	314	load_perl (Coro__State c)
289	{	315	{
290	#define VAR(name,type) PL_ ## name = c->name;	316	#define VAR(name,type) PL_ ## name = c->name;
291	# include "state.h"	317	# include "state.h"
292	#undef VAR	318	#undef VAR
293		319
294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	320	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	321	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
296	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	322	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		323	if (c->irssv)
		324	{
		325	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		326	SvREFCNT_dec (c->irssv);
		327	else
		328	{
		329	REPLACE_SV (PL_rs, c->irssv);
		330	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		331	sv_setsv (c->irssv_sv, PL_rs);
		332	}
		333	}
297		334
298	{	335	{
299	dSP;	336	dSP;
300	CV *cv;	337	CV *cv;
301		338
…		…
310	PUTBACK;	347	PUTBACK;
311	}	348	}
312	}	349	}
313		350
314	static void	351	static void
315	save_state(Coro__State c, int flags)	352	save_perl (Coro__State c)
316	{	353	{
317	{	354	{
318	dSP;	355	dSP;
319	I32 cxix = cxstack_ix;	356	I32 cxix = cxstack_ix;
320	PERL_CONTEXT *ccstk = cxstack;	357	PERL_CONTEXT *ccstk = cxstack;
…		…
323	/*	360	/*
324	* the worst thing you can imagine happens first - we have to save	361	* the worst thing you can imagine happens first - we have to save
325	* (and reinitialize) all cv's in the whole callchain :(	362	* (and reinitialize) all cv's in the whole callchain :(
326	*/	363	*/
327		364
		365	EXTEND (SP, 3 + 1);
328	PUSHs (Nullsv);	366	PUSHs (Nullsv);
329	/* this loop was inspired by pp_caller */	367	/* this loop was inspired by pp_caller */
330	for (;;)	368	for (;;)
331	{	369	{
332	while (cxix >= 0)	370	while (cxix >= 0)
333	{	371	{
334	PERL_CONTEXT *cx = &ccstk[cxix--];	372	PERL_CONTEXT *cx = &ccstk[cxix--];
335		373
336	if (CxTYPE(cx) == CXt_SUB)	374	if (CxTYPE (cx) == CXt_SUB)
337	{	375	{
338	CV *cv = cx->blk_sub.cv;	376	CV *cv = cx->blk_sub.cv;
339		377
340	if (CvDEPTH (cv))	378	if (CvDEPTH (cv))
341	{	379	{
342	EXTEND (SP, 3);	380	EXTEND (SP, 3);
343
344	PUSHs ((SV *)CvPADLIST(cv));	381	PUSHs ((SV *)CvPADLIST (cv));
345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	382	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
346	PUSHs ((SV *)cv);	383	PUSHs ((SV *)cv);
347		384
348	CvDEPTH (cv) = 0;	385	CvDEPTH (cv) = 0;
349	get_padlist (cv);	386	get_padlist (cv);
350	}	387	}
351	}	388	}
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	}	389	}
361		390
362	if (top_si->si_type == PERLSI_MAIN)	391	if (top_si->si_type == PERLSI_MAIN)
363	break;	392	break;
364		393
…		…
368	}	397	}
369		398
370	PUTBACK;	399	PUTBACK;
371	}	400	}
372		401
373	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	402	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;	403	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
375	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	404	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		405	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
376		406
377	#define VAR(name,type)c->name = PL_ ## name;	407	#define VAR(name,type)c->name = PL_ ## name;
378	# include "state.h"	408	# include "state.h"
379	#undef VAR	409	#undef VAR
380	}	410	}
…		…
383	* allocate various perl stacks. This is an exact copy	413	* allocate various perl stacks. This is an exact copy
384	* of perl.c:init_stacks, except that it uses less memory	414	* of perl.c:init_stacks, except that it uses less memory
385	* on the (sometimes correct) assumption that coroutines do	415	* on the (sometimes correct) assumption that coroutines do
386	* not usually need a lot of stackspace.	416	* not usually need a lot of stackspace.
387	*/	417	*/
		418	#if PREFER_PERL_FUNCTIONS
		419	# define coro_init_stacks init_stacks
		420	#else
388	static void	421	static void
389	coro_init_stacks ()	422	coro_init_stacks ()
390	{	423	{
391	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	424	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
392	PL_curstackinfo->si_type = PERLSI_MAIN;	425	PL_curstackinfo->si_type = PERLSI_MAIN;
393	PL_curstack = PL_curstackinfo->si_stack;	426	PL_curstack = PL_curstackinfo->si_stack;
394	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	427	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395		428
396	PL_stack_base = AvARRAY(PL_curstack);	429	PL_stack_base = AvARRAY(PL_curstack);
397	PL_stack_sp = PL_stack_base;	430	PL_stack_sp = PL_stack_base;
398	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	431	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399		432
400	New(50,PL_tmps_stack,96,SV*);	433	New(50,PL_tmps_stack,128,SV*);
401	PL_tmps_floor = -1;	434	PL_tmps_floor = -1;
402	PL_tmps_ix = -1;	435	PL_tmps_ix = -1;
403	PL_tmps_max = 96;	436	PL_tmps_max = 128;
404		437
405	New(54,PL_markstack,16,I32);	438	New(54,PL_markstack,32,I32);
406	PL_markstack_ptr = PL_markstack;	439	PL_markstack_ptr = PL_markstack;
407	PL_markstack_max = PL_markstack + 16;	440	PL_markstack_max = PL_markstack + 32;
408		441
409	#ifdef SET_MARK_OFFSET	442	#ifdef SET_MARK_OFFSET
410	SET_MARK_OFFSET;	443	SET_MARK_OFFSET;
411	#endif	444	#endif
412		445
413	New(54,PL_scopestack,16,I32);	446	New(54,PL_scopestack,32,I32);
414	PL_scopestack_ix = 0;	447	PL_scopestack_ix = 0;
415	PL_scopestack_max = 16;	448	PL_scopestack_max = 32;
416		449
417	New(54,PL_savestack,96,ANY);	450	New(54,PL_savestack,64,ANY);
418	PL_savestack_ix = 0;	451	PL_savestack_ix = 0;
419	PL_savestack_max = 96;	452	PL_savestack_max = 64;
420		453
421	#if !PERL_VERSION_ATLEAST (5,9,0)	454	#if !PERL_VERSION_ATLEAST (5,9,0)
422	New(54,PL_retstack,8,OP*);	455	New(54,PL_retstack,16,OP*);
423	PL_retstack_ix = 0;	456	PL_retstack_ix = 0;
424	PL_retstack_max = 8;	457	PL_retstack_max = 16;
425	#endif	458	#endif
426	}	459	}
		460	#endif
427		461
428	/*	462	/*
429	* destroy the stacks, the callchain etc...	463	* destroy the stacks, the callchain etc...
430	*/	464	*/
431	static void	465	static void
432	coro_destroy_stacks ()	466	coro_destroy_stacks ()
433	{	467	{
434	if (!IN_DESTRUCT)	468	if (!IN_DESTRUCT)
435	{	469	{
436	/* is this ugly, I ask? */	470	/* restore all saved variables and stuff */
437	LEAVE_SCOPE (0);	471	LEAVE_SCOPE (0);
		472	assert (PL_tmps_floor == -1);
438		473
439	/* sure it is, but more important: is it correct?? :/ */	474	/* free all temporaries */
440	FREETMPS;	475	FREETMPS;
		476	assert (PL_tmps_ix == -1);
441		477
		478	/* unwind all extra stacks */
442	/POPSTACK_TO (PL_mainstack);//D//use/	479	POPSTACK_TO (PL_mainstack);
		480
		481	/* unwind main stack */
		482	dounwind (-1);
443	}	483	}
444		484
445	while (PL_curstackinfo->si_next)	485	while (PL_curstackinfo->si_next)
446	PL_curstackinfo = PL_curstackinfo->si_next;	486	PL_curstackinfo = PL_curstackinfo->si_next;
447		487
448	while (PL_curstackinfo)	488	while (PL_curstackinfo)
449	{	489	{
450	PERL_SI *p = PL_curstackinfo->si_prev;	490	PERL_SI *p = PL_curstackinfo->si_prev;
451		491
452	{ /D//remove/
453	dSP;
454	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455	PUTBACK; /* possibly superfluous */
456	}
457
458	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
459	{
460	dounwind (-1);/D//remove/
461	SvREFCNT_dec (PL_curstackinfo->si_stack);	493	SvREFCNT_dec (PL_curstackinfo->si_stack);
462	}
463		494
464	Safefree (PL_curstackinfo->si_cxstack);	495	Safefree (PL_curstackinfo->si_cxstack);
465	Safefree (PL_curstackinfo);	496	Safefree (PL_curstackinfo);
466	PL_curstackinfo = p;	497	PL_curstackinfo = p;
467	}	498	}
…		…
482	* emulate part of the perl startup here.	513	* emulate part of the perl startup here.
483	*/	514	*/
484		515
485	coro_init_stacks ();	516	coro_init_stacks ();
486		517
487	PL_curcop = 0;	518	PL_curcop = &PL_compiling;
488	PL_in_eval = 0;	519	PL_in_eval = EVAL_NULL;
489	PL_curpm = 0;	520	PL_curpm = 0;
		521	PL_localizing = 0;
		522	PL_dirty = 0;
		523	PL_restartop = 0;
490		524
491	{	525	{
492	dSP;	526	dSP;
493	LOGOP myop;	527	LOGOP myop;
494		528
495	/* I have no idea why this is needed, but it is */
496	PUSHMARK (SP);
497
498	SvREFCNT_dec (GvAV (PL_defgv));	529	SvREFCNT_dec (GvAV (PL_defgv));
499	GvAV (PL_defgv) = coro->args; coro->args = 0;	530	GvAV (PL_defgv) = coro->args; coro->args = 0;
500		531
501	Zero (&myop, 1, LOGOP);	532	Zero (&myop, 1, LOGOP);
502	myop.op_next = Nullop;	533	myop.op_next = Nullop;
503	myop.op_flags = OPf_WANT_VOID;	534	myop.op_flags = OPf_WANT_VOID;
504		535
505	PL_op = (OP *)&myop;
506
507	PUSHMARK (SP);	536	PUSHMARK (SP);
508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	537	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
509	PUTBACK;	538	PUTBACK;
		539	PL_op = (OP *)&myop;
510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	540	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511	SPAGAIN;	541	SPAGAIN;
512
513	ENTER; /* necessary e.g. for dounwind */
514	}	542	}
		543
		544	ENTER; /* necessary e.g. for dounwind */
515	}	545	}
516		546
517	static void	547	static void
518	free_coro_mortal ()	548	free_coro_mortal ()
519	{	549	{
…		…
522	SvREFCNT_dec (coro_mortal);	552	SvREFCNT_dec (coro_mortal);
523	coro_mortal = 0;	553	coro_mortal = 0;
524	}	554	}
525	}	555	}
526		556
		557	/* inject a fake call to Coro::State::_cctx_init into the execution */
527	static void NOINLINE	558	static void NOINLINE
528	prepare_cctx (coro_cctx *cctx)	559	prepare_cctx (coro_cctx *cctx)
529	{	560	{
530	dSP;	561	dSP;
531	LOGOP myop;	562	LOGOP myop;
532		563
533	Zero (&myop, 1, LOGOP);	564	Zero (&myop, 1, LOGOP);
534	myop.op_next = PL_op;	565	myop.op_next = PL_op;
535	myop.op_flags = OPf_WANT_VOID;	566	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
536
537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538		567
539	PUSHMARK (SP);	568	PUSHMARK (SP);
		569	EXTEND (SP, 2);
		570	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	571	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541	PUTBACK;	572	PUTBACK;
		573	PL_op = (OP *)&myop;
542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543	SPAGAIN;	575	SPAGAIN;
544	}	576	}
545		577
546	static void	578	static void
547	coro_run (void *arg)	579	coro_run (void *arg)
548	{	580	{
549	/* coro_run is the alternative epilogue of transfer() */	581	/* coro_run is the alternative tail of transfer(), so unlock here. */
550	UNLOCK;	582	UNLOCK;
551		583
552	/*	584	/*
553	* this is a _very_ stripped down perl interpreter ;)	585	* this is a _very_ stripped down perl interpreter ;)
554	*/	586	*/
…		…
556		588
557	/* inject call to cctx_init */	589	/* inject call to cctx_init */
558	prepare_cctx ((coro_cctx *)arg);	590	prepare_cctx ((coro_cctx *)arg);
559		591
560	/* somebody will hit me for both perl_run and PL_restartop */	592	/* somebody will hit me for both perl_run and PL_restartop */
		593	PL_restartop = PL_op;
561	perl_run (PL_curinterp);	594	perl_run (PL_curinterp);
562		595
563	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	596	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
564	abort ();	597	abort ();
565	}	598	}
…		…
569	{	602	{
570	coro_cctx *cctx;	603	coro_cctx *cctx;
571		604
572	++cctx_count;	605	++cctx_count;
573		606
574	New (0, cctx, 1, coro_cctx);	607	Newz (0, cctx, 1, coro_cctx);
575		608
576	#if HAVE_MMAP	609	#if HAVE_MMAP
577		610
578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	611	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
579	/* mmap suppsedly does allocate-on-write for us */	612	/* 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);	613	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
581		614
582	if (cctx->sptr == (void *)-1)	615	if (cctx->sptr == (void *)-1)
583	{	616	{
584	perror ("FATAL: unable to mmap stack for coroutine");	617	perror ("FATAL: unable to mmap stack for coroutine");
…		…
613		646
614	return cctx;	647	return cctx;
615	}	648	}
616		649
617	static void	650	static void
618	cctx_free (coro_cctx *cctx)	651	cctx_destroy (coro_cctx *cctx)
619	{	652	{
620	if (!cctx)	653	if (!cctx)
621	return;	654	return;
622		655
623	--cctx_count;	656	--cctx_count;
…		…
640	{	673	{
641	coro_cctx *cctx;	674	coro_cctx *cctx;
642		675
643	if (cctx_first)	676	if (cctx_first)
644	{	677	{
645	--cctx_idle;
646	cctx = cctx_first;	678	cctx = cctx_first;
647	cctx_first = cctx->next;	679	cctx_first = cctx->next;
		680	--cctx_idle;
648	}	681	}
649	else	682	else
650	{	683	{
651	cctx = cctx_new ();	684	cctx = cctx_new ();
652	PL_op = PL_op->op_next;	685	PL_op = PL_op->op_next;
…		…
656	}	689	}
657		690
658	static void	691	static void
659	cctx_put (coro_cctx *cctx)	692	cctx_put (coro_cctx *cctx)
660	{	693	{
		694	/* free another cctx if overlimit */
		695	if (cctx_idle >= MAX_IDLE_CCTX)
		696	{
		697	coro_cctx *first = cctx_first;
		698	cctx_first = first->next;
		699	--cctx_idle;
		700
		701	assert (!first->inuse);
		702	cctx_destroy (first);
		703	}
		704
661	++cctx_idle;	705	++cctx_idle;
662	cctx->next = cctx_first;	706	cctx->next = cctx_first;
663	cctx_first = cctx;	707	cctx_first = cctx;
664	}	708	}
665		709
666	/* never call directly, always through the coro_state_transfer global variable */	710	/* never call directly, always through the coro_state_transfer global variable */
667	static void NOINLINE	711	static void NOINLINE
668	transfer (struct coro prev, struct coro next, int flags)	712	transfer (struct coro prev, struct coro next)
669	{	713	{
670	dSTACKLEVEL;	714	dSTACKLEVEL;
671		715
672	/* sometimes transfer is only called to set idle_sp */	716	/* sometimes transfer is only called to set idle_sp */
673	if (flags == TRANSFER_SET_STACKLEVEL)	717	if (!next)
		718	{
674	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	719	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		720	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		721	}
675	else if (prev != next)	722	else if (prev != next)
676	{	723	{
677	coro_cctx *prev__cctx;	724	coro_cctx *prev__cctx;
678		725
679	if (!prev->cctx)	726	if (prev->flags & CF_NEW)
680	{	727	{
681	/* create a new empty context */	728	/* create a new empty context */
682	Newz (0, prev->cctx, 1, coro_cctx);	729	Newz (0, prev->cctx, 1, coro_cctx);
683	prev->cctx->inuse = 1;	730	prev->cctx->inuse = 1;
		731	prev->flags &= ~CF_NEW;
684	prev->flags \|= CF_RUNNING;	732	prev->flags \|= CF_RUNNING;
685	}	733	}
686		734
		735	/TODO: must not croak here /
687	if (!prev->flags & CF_RUNNING)	736	if (!prev->flags & CF_RUNNING)
688	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	737	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
689		738
690	if (next->flags & CF_RUNNING)	739	if (next->flags & CF_RUNNING)
691	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	740	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
692		741
		742	if (next->flags & CF_DESTROYED)
		743	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		744
693	prev->flags &= ~CF_RUNNING;	745	prev->flags &= ~CF_RUNNING;
694	next->flags \|= CF_RUNNING;	746	next->flags \|= CF_RUNNING;
695		747
696	LOCK;	748	LOCK;
697		749
698	if (next->mainstack)	750	if (next->flags & CF_NEW)
699	{	751	{
700	/* coroutine already started */	752	/* need to start coroutine */
701	SAVE (prev, flags);	753	next->flags &= ~CF_NEW;
702	LOAD (next);	754	/* first get rid of the old state */
		755	save_perl (prev);
		756	/* setup coroutine call */
		757	setup_coro (next);
		758	/* need a new stack */
		759	assert (!next->cctx);
703	}	760	}
704	else	761	else
705	{	762	{
706	/* need to start coroutine */	763	/* coroutine already started */
707	/* first get rid of the old state */	764	save_perl (prev);
708	SAVE (prev, -1);	765	load_perl (next);
709	/* setup coroutine call */
710	setup_coro (next);
711	/* need a new stack */
712	assert (!next->stack);
713	}	766	}
714		767
715	prev__cctx = prev->cctx;	768	prev__cctx = prev->cctx;
716		769
717	/* possibly "free" the cctx */	770	/* possibly "free" the cctx */
718	if (prev__cctx->idle_sp == STACKLEVEL)	771	if (prev__cctx->idle_sp == STACKLEVEL)
719	{	772	{
720	assert (PL_top_env == prev__cctx->top_env);	773	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		774	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		775
		776	prev->cctx = 0;
721		777
722	cctx_put (prev__cctx);	778	cctx_put (prev__cctx);
723	prev->cctx = 0;	779	prev__cctx->inuse = 0;
724	}	780	}
725	else if (prev__cctx->idle_sp) //D
726	fprintf (stderr, "coro %p has own stack %p-%p\n", prev__cctx, prev__cctx->idle_sp, STACKLEVEL);//D
727		781
728	if (!next->cctx)	782	if (!next->cctx)
		783	{
729	next->cctx = cctx_get ();	784	next->cctx = cctx_get ();
		785	assert (!next->cctx->inuse);
		786	next->cctx->inuse = 1;
		787	}
730		788
731	if (prev__cctx != next->cctx)	789	if (prev__cctx != next->cctx)
732	{	790	{
733	assert ( prev__cctx->inuse);
734	assert (!next->cctx->inuse);
735
736	prev__cctx->inuse = 0;
737	next->cctx->inuse = 1;
738
739	prev__cctx->top_env = PL_top_env;	791	prev__cctx->top_env = PL_top_env;
740	PL_top_env = next->cctx->top_env;	792	PL_top_env = next->cctx->top_env;
741	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	793	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
742	}	794	}
743		795
744	free_coro_mortal ();	796	free_coro_mortal ();
745
746	UNLOCK;	797	UNLOCK;
747	}	798	}
748	}	799	}
749		800
750	struct transfer_args	801	struct transfer_args
751	{	802	{
752	struct coro prev, next;	803	struct coro prev, next;
753	int flags;
754	};	804	};
755		805
756	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	806	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
757		807
758	static void	808	static int
759	coro_state_destroy (struct coro *coro)	809	coro_state_destroy (struct coro *coro)
760	{	810	{
761	if (coro->refcnt--)	811	if (coro->flags & CF_DESTROYED)
762	return;	812	return 0;
763		813
764	if (coro->flags & CF_RUNNING)	814	coro->flags \|= CF_DESTROYED;
765	croak ("FATAL: tried to destroy currently running coroutine");
766		815
767	if (coro->mainstack && coro->mainstack != main_mainstack)	816	if (coro->mainstack && coro->mainstack != main_mainstack)
768	{	817	{
		818	assert (!(coro->flags & CF_RUNNING));
		819
769	struct coro temp;	820	struct coro temp;
		821	Zero (&temp, 1, struct coro);
		822	temp.save = CORO_SAVE_ALL;
770		823
771	SAVE ((&temp), TRANSFER_SAVE_ALL);	824	if (coro->flags & CF_RUNNING)
772	LOAD (coro);	825	croak ("FATAL: tried to destroy currently running coroutine");
		826
		827	save_perl (&temp);
		828	load_perl (coro);
773		829
774	coro_destroy_stacks ();	830	coro_destroy_stacks ();
775		831
776	LOAD ((&temp)); /* this will get rid of defsv etc.. */	832	load_perl (&temp); /* this will get rid of defsv etc.. */
777		833
778	coro->mainstack = 0;	834	coro->mainstack = 0;
779	}	835	}
780		836
781	cctx_free (coro->cctx);	837	cctx_destroy (coro->cctx);
782	SvREFCNT_dec (coro->args);	838	SvREFCNT_dec (coro->args);
783	Safefree (coro);	839
		840	return 1;
784	}	841	}
785		842
786	static int	843	static int
787	coro_state_clear (pTHX_ SV sv, MAGIC mg)	844	coro_state_free (pTHX_ SV sv, MAGIC mg)
788	{	845	{
789	struct coro coro = (struct coro )mg->mg_ptr;	846	struct coro coro = (struct coro )mg->mg_ptr;
790	mg->mg_ptr = 0;	847	mg->mg_ptr = 0;
791		848
		849	if (--coro->refcnt < 0)
		850	{
792	coro_state_destroy (coro);	851	coro_state_destroy (coro);
		852	Safefree (coro);
		853	}
793		854
794	return 0;	855	return 0;
795	}	856	}
796		857
797	static int	858	static int
…		…
804	return 0;	865	return 0;
805	}	866	}
806		867
807	static MGVTBL coro_state_vtbl = {	868	static MGVTBL coro_state_vtbl = {
808	0, 0, 0, 0,	869	0, 0, 0, 0,
809	coro_state_clear,	870	coro_state_free,
810	0,	871	0,
811	#ifdef MGf_DUP	872	#ifdef MGf_DUP
812	coro_state_dup,	873	coro_state_dup,
813	#else	874	#else
814	# define MGf_DUP 0	875	# define MGf_DUP 0
…		…
836	assert (mg->mg_type == PERL_MAGIC_ext);	897	assert (mg->mg_type == PERL_MAGIC_ext);
837	return (struct coro *)mg->mg_ptr;	898	return (struct coro *)mg->mg_ptr;
838	}	899	}
839		900
840	static void	901	static void
841	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	902	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
842	{	903	{
843	ta->prev = SvSTATE (prev);	904	ta->prev = SvSTATE (prev_sv);
844	ta->next = SvSTATE (next);	905	ta->next = SvSTATE (next_sv);
845	ta->flags = flags;
846	}	906	}
847		907
848	static void	908	static void
849	api_transfer (SV prev, SV next, int flags)	909	api_transfer (SV prev_sv, SV next_sv)
850	{	910	{
851	dTHX;
852	struct transfer_args ta;	911	struct transfer_args ta;
853		912
854	prepare_transfer (&ta, prev, next, flags);	913	prepare_transfer (&ta, prev_sv, next_sv);
855	TRANSFER (ta);	914	TRANSFER (ta);
		915	}
		916
		917	static int
		918	api_save (SV *coro_sv, int new_save)
		919	{
		920	struct coro *coro = SvSTATE (coro_sv);
		921	int old_save = coro->save;
		922
		923	if (new_save >= 0)
		924	coro->save = new_save;
		925
		926	return old_save;
856	}	927	}
857		928
858	/ Coro ******************************************************************/	929	/ Coro ******************************************************************/
859		930
860	#define PRIO_MAX 3	931	#define PRIO_MAX 3
…		…
863	#define PRIO_LOW -1	934	#define PRIO_LOW -1
864	#define PRIO_IDLE -3	935	#define PRIO_IDLE -3
865	#define PRIO_MIN -4	936	#define PRIO_MIN -4
866		937
867	/* for Coro.pm */	938	/* for Coro.pm */
868	static GV coro_current, coro_idle;	939	static SV *coro_current;
869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	940	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
870	static int coro_nready;	941	static int coro_nready;
871		942
872	static void	943	static void
873	coro_enq (SV *coro_sv)	944	coro_enq (SV *coro_sv)
…		…
906	coro = SvSTATE (coro_sv);	977	coro = SvSTATE (coro_sv);
907		978
908	if (coro->flags & CF_READY)	979	if (coro->flags & CF_READY)
909	return 0;	980	return 0;
910		981
911	if (coro->flags & CF_RUNNING)
912	croak ("Coro::ready called on currently running coroutine");
913
914	coro->flags \|= CF_READY;	982	coro->flags \|= CF_READY;
915		983
916	LOCK;	984	LOCK;
917	coro_enq (SvREFCNT_inc (coro_sv));	985	coro_enq (SvREFCNT_inc (coro_sv));
918	UNLOCK;	986	UNLOCK;
…		…
921	}	989	}
922		990
923	static int	991	static int
924	api_is_ready (SV *coro_sv)	992	api_is_ready (SV *coro_sv)
925	{	993	{
926	return !!SvSTATE (coro_sv)->flags & CF_READY;	994	return !!(SvSTATE (coro_sv)->flags & CF_READY);
927	}	995	}
928		996
929	static void	997	static void
930	prepare_schedule (struct transfer_args *ta)	998	prepare_schedule (struct transfer_args *ta)
931	{	999	{
932	SV current, prev, *next;	1000	SV prev_sv, next_sv;
933
934	current = GvSV (coro_current);
935		1001
936	for (;;)	1002	for (;;)
937	{	1003	{
938	LOCK;	1004	LOCK;
939	next = coro_deq (PRIO_MIN);	1005	next_sv = coro_deq (PRIO_MIN);
940	UNLOCK;	1006	UNLOCK;
941		1007
		1008	/* nothing to schedule: call the idle handler */
942	if (next)	1009	if (!next_sv)
943	break;
944
945	{	1010	{
946	dSP;	1011	dSP;
947		1012
948	ENTER;	1013	ENTER;
949	SAVETMPS;	1014	SAVETMPS;
950		1015
951	PUSHMARK (SP);	1016	PUSHMARK (SP);
952	PUTBACK;	1017	PUTBACK;
953	call_sv (GvSV (coro_idle), G_DISCARD);	1018	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
954		1019
955	FREETMPS;	1020	FREETMPS;
956	LEAVE;	1021	LEAVE;
		1022	continue;
957	}	1023	}
958	}
959		1024
960	prev = SvRV (current);	1025	ta->next = SvSTATE (next_sv);
961	SvRV (current) = next;	1026
		1027	/* cannot transfer to destroyed coros, skip and look for next */
		1028	if (ta->next->flags & CF_DESTROYED)
		1029	{
		1030	SvREFCNT_dec (next_sv);
		1031	continue;
		1032	}
		1033
		1034	break;
		1035	}
962		1036
963	/* free this only after the transfer */	1037	/* free this only after the transfer */
		1038	prev_sv = SvRV (coro_current);
		1039	SvRV_set (coro_current, next_sv);
		1040	ta->prev = SvSTATE (prev_sv);
		1041
		1042	assert (ta->next->flags & CF_READY);
		1043	ta->next->flags &= ~CF_READY;
		1044
964	LOCK;	1045	LOCK;
965	free_coro_mortal ();	1046	free_coro_mortal ();
		1047	coro_mortal = prev_sv;
966	UNLOCK;	1048	UNLOCK;
967	coro_mortal = prev;
968
969	ta->prev = SvSTATE (prev);
970	ta->next = SvSTATE (next);
971	ta->flags = TRANSFER_SAVE_ALL;
972
973	ta->next->flags &= ~CF_READY;
974	}	1049	}
975		1050
976	static void	1051	static void
977	prepare_cede (struct transfer_args *ta)	1052	prepare_cede (struct transfer_args *ta)
978	{	1053	{
979	api_ready (GvSV (coro_current));	1054	api_ready (coro_current);
980
981	prepare_schedule (ta);	1055	prepare_schedule (ta);
982	}	1056	}
983		1057
		1058	static int
		1059	prepare_cede_notself (struct transfer_args *ta)
		1060	{
		1061	if (coro_nready)
		1062	{
		1063	SV *prev = SvRV (coro_current);
		1064	prepare_schedule (ta);
		1065	api_ready (prev);
		1066	return 1;
		1067	}
		1068	else
		1069	return 0;
		1070	}
		1071
984	static void	1072	static void
985	api_schedule (void)	1073	api_schedule (void)
986	{	1074	{
987	dTHX;
988	struct transfer_args ta;	1075	struct transfer_args ta;
989		1076
990	prepare_schedule (&ta);	1077	prepare_schedule (&ta);
991	TRANSFER (ta);	1078	TRANSFER (ta);
992	}	1079	}
993		1080
994	static void	1081	static int
995	api_cede (void)	1082	api_cede (void)
996	{	1083	{
997	dTHX;
998	struct transfer_args ta;	1084	struct transfer_args ta;
999		1085
1000	prepare_cede (&ta);	1086	prepare_cede (&ta);
		1087
		1088	if (ta.prev != ta.next)
		1089	{
1001	TRANSFER (ta);	1090	TRANSFER (ta);
		1091	return 1;
		1092	}
		1093	else
		1094	return 0;
		1095	}
		1096
		1097	static int
		1098	api_cede_notself (void)
		1099	{
		1100	struct transfer_args ta;
		1101
		1102	if (prepare_cede_notself (&ta))
		1103	{
		1104	TRANSFER (ta);
		1105	return 1;
		1106	}
		1107	else
		1108	return 0;
1002	}	1109	}
1003		1110
1004	MODULE = Coro::State PACKAGE = Coro::State	1111	MODULE = Coro::State PACKAGE = Coro::State
1005		1112
1006	PROTOTYPES: DISABLE	1113	PROTOTYPES: DISABLE
…		…
1012	#endif	1119	#endif
1013	BOOT_PAGESIZE;	1120	BOOT_PAGESIZE;
1014		1121
1015	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1122	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1016		1123
1017	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1124	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1018	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1125	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1019	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1126	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1127	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1128	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1020		1129
1021	main_mainstack = PL_mainstack;	1130	main_mainstack = PL_mainstack;
1022		1131
1023	coroapi.ver = CORO_API_VERSION;	1132	coroapi.ver = CORO_API_VERSION;
1024	coroapi.transfer = api_transfer;	1133	coroapi.transfer = api_transfer;
…		…
1034	HV *hv;	1143	HV *hv;
1035	int i;	1144	int i;
1036		1145
1037	Newz (0, coro, 1, struct coro);	1146	Newz (0, coro, 1, struct coro);
1038	coro->args = newAV ();	1147	coro->args = newAV ();
		1148	coro->save = CORO_SAVE_ALL;
		1149	coro->flags = CF_NEW;
1039		1150
1040	hv = newHV ();	1151	hv = newHV ();
1041	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1152	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1042	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1153	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1043		1154
1044	for (i = 1; i < items; i++)	1155	for (i = 1; i < items; i++)
1045	av_push (coro->args, newSVsv (ST (i)));	1156	av_push (coro->args, newSVsv (ST (i)));
1046	}	1157	}
1047	OUTPUT:	1158	OUTPUT:
		1159	RETVAL
		1160
		1161	int
		1162	save (SV *coro, int new_save = -1)
		1163	CODE:
		1164	RETVAL = api_save (coro, new_save);
		1165	OUTPUT:
1048	RETVAL	1166	RETVAL
1049		1167
1050	void	1168	void
1051	_set_stacklevel (...)	1169	_set_stacklevel (...)
1052	ALIAS:	1170	ALIAS:
1053	Coro::State::transfer = 1	1171	Coro::State::transfer = 1
1054	Coro::schedule = 2	1172	Coro::schedule = 2
1055	Coro::cede = 3	1173	Coro::cede = 3
1056	Coro::Cont::yield = 4	1174	Coro::cede_notself = 4
1057	CODE:	1175	CODE:
1058	{	1176	{
1059	struct transfer_args ta;	1177	struct transfer_args ta;
1060		1178
1061	switch (ix)	1179	switch (ix)
1062	{	1180	{
1063	case 0:	1181	case 0:
1064	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1182	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1065	ta.next = 0;	1183	ta.next = 0;
1066	ta.flags = TRANSFER_SET_STACKLEVEL;
1067	break;	1184	break;
1068		1185
1069	case 1:	1186	case 1:
1070	if (items != 3)	1187	if (items != 2)
1071	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1188	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1072		1189
1073	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1190	prepare_transfer (&ta, ST (0), ST (1));
1074	break;	1191	break;
1075		1192
1076	case 2:	1193	case 2:
1077	prepare_schedule (&ta);	1194	prepare_schedule (&ta);
1078	break;	1195	break;
…		…
1080	case 3:	1197	case 3:
1081	prepare_cede (&ta);	1198	prepare_cede (&ta);
1082	break;	1199	break;
1083		1200
1084	case 4:	1201	case 4:
1085	{	1202	if (!prepare_cede_notself (&ta))
1086	SV *yieldstack;	1203	XSRETURN_EMPTY;
1087	SV *sv;
1088	AV *defav = GvAV (PL_defgv);
1089		1204
1090	yieldstack = *hv_fetch (
1091	(HV *)SvRV (GvSV (coro_current)),
1092	"yieldstack", sizeof ("yieldstack") - 1,
1093	0
1094	);
1095
1096	/* set up @_ -- ugly */
1097	av_clear (defav);
1098	av_fill (defav, items - 1);
1099	while (items--)
1100	av_store (defav, items, SvREFCNT_inc (ST(items)));
1101
1102	sv = av_pop ((AV *)SvRV (yieldstack));
1103	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1104	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1105	ta.flags = 0;
1106	SvREFCNT_dec (sv);
1107	}
1108	break;	1205	break;
1109
1110	}	1206	}
1111		1207
		1208	BARRIER;
1112	TRANSFER (ta);	1209	TRANSFER (ta);
1113	}
1114		1210
1115	void	1211	if (GIMME_V != G_VOID && ta.next != ta.prev)
1116	_clone_state_from (SV dst, SV src)	1212	XSRETURN_YES;
		1213	}
		1214
		1215	bool
		1216	_destroy (SV *coro_sv)
1117	CODE:	1217	CODE:
1118	{	1218	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1119	struct coro *coro_src = SvSTATE (src);	1219	OUTPUT:
1120		1220	RETVAL
1121	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1122
1123	++coro_src->refcnt;
1124	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1125	}
1126		1221
1127	void	1222	void
1128	_exit (code)	1223	_exit (code)
1129	int code	1224	int code
1130	PROTOTYPE: $	1225	PROTOTYPE: $
…		…
1158	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1253	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1159	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1254	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1160	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1255	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1161	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1256	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1162		1257
1163	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1258	coro_current = get_sv ("Coro::current", FALSE);
1164	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1259	SvREADONLY_on (coro_current);
1165		1260
1166	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1167	coro_ready[i] = newAV ();	1262	coro_ready[i] = newAV ();
1168		1263
1169	{	1264	{
1170	SV *sv = perl_get_sv("Coro::API", 1);	1265	SV *sv = perl_get_sv("Coro::API", 1);
1171		1266
1172	coroapi.schedule = api_schedule;	1267	coroapi.schedule = api_schedule;
		1268	coroapi.save = api_save;
1173	coroapi.cede = api_cede;	1269	coroapi.cede = api_cede;
		1270	coroapi.cede_notself = api_cede_notself;
1174	coroapi.ready = api_ready;	1271	coroapi.ready = api_ready;
1175	coroapi.is_ready = api_is_ready;	1272	coroapi.is_ready = api_is_ready;
1176	coroapi.nready = &coro_nready;	1273	coroapi.nready = &coro_nready;
1177	coroapi.current = coro_current;	1274	coroapi.current = coro_current;
1178		1275
1179	GCoroAPI = &coroapi;	1276	GCoroAPI = &coroapi;
1180	sv_setiv (sv, (IV)&coroapi);	1277	sv_setiv (sv, (IV)&coroapi);
1181	SvREADONLY_on (sv);	1278	SvREADONLY_on (sv);
1182	}	1279	}
1183	}	1280	}
		1281
		1282	void
		1283	_set_current (SV *current)
		1284	PROTOTYPE: $
		1285	CODE:
		1286	SvREFCNT_dec (SvRV (coro_current));
		1287	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1184		1288
1185	int	1289	int
1186	prio (Coro::State coro, int newprio = 0)	1290	prio (Coro::State coro, int newprio = 0)
1187	ALIAS:	1291	ALIAS:
1188	nice = 1	1292	nice = 1
…		…
1191	RETVAL = coro->prio;	1295	RETVAL = coro->prio;
1192		1296
1193	if (items > 1)	1297	if (items > 1)
1194	{	1298	{
1195	if (ix)	1299	if (ix)
1196	newprio += coro->prio;	1300	newprio = coro->prio - newprio;
1197		1301
1198	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1302	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1199	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1303	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1200		1304
1201	coro->prio = newprio;	1305	coro->prio = newprio;
1202	}	1306	}
1203	}	1307	}
		1308	OUTPUT:
		1309	RETVAL
1204		1310
1205	SV *	1311	SV *
1206	ready (SV *self)	1312	ready (SV *self)
1207	PROTOTYPE: $	1313	PROTOTYPE: $
1208	CODE:	1314	CODE:
…		…
1230		1336
1231	SV *	1337	SV *
1232	_get_state ()	1338	_get_state ()
1233	CODE:	1339	CODE:
1234	{	1340	{
1235	struct {	1341	struct io_state *data;
1236	int errorno;
1237	int laststype;
1238	int laststatval;
1239	Stat_t statcache;
1240	} data;
1241		1342
		1343	RETVAL = newSV (sizeof (struct io_state));
		1344	data = (struct io_state *)SvPVX (RETVAL);
		1345	SvCUR_set (RETVAL, sizeof (struct io_state));
		1346	SvPOK_only (RETVAL);
		1347
1242	data.errorno = errno;	1348	data->errorno = errno;
1243	data.laststype = PL_laststype;	1349	data->laststype = PL_laststype;
1244	data.laststatval = PL_laststatval;	1350	data->laststatval = PL_laststatval;
1245	data.statcache = PL_statcache;	1351	data->statcache = PL_statcache;
1246
1247	RETVAL = newSVpvn ((char *)&data, sizeof data);
1248	}	1352	}
1249	OUTPUT:	1353	OUTPUT:
1250	RETVAL	1354	RETVAL
1251		1355
1252	void	1356	void
1253	_set_state (char *data_)	1357	_set_state (char *data_)
1254	PROTOTYPE: $	1358	PROTOTYPE: $
1255	CODE:	1359	CODE:
1256	{	1360	{
1257	struct {	1361	struct io_state data = (void )data_;
1258	int errorno;
1259	int laststype;
1260	int laststatval;
1261	Stat_t statcache;
1262	} data = (void )data_;
1263		1362
1264	errno = data->errorno;	1363	errno = data->errorno;
1265	PL_laststype = data->laststype;	1364	PL_laststype = data->laststype;
1266	PL_laststatval = data->laststatval;	1365	PL_laststatval = data->laststatval;
1267	PL_statcache = data->statcache;	1366	PL_statcache = data->statcache;
1268	}	1367	}
		1368

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Comparing Coro/Coro/State.xs (file contents): Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC vs. Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC vs.
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC