[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 1.134 by root, Thu Jan 4 23:49:27 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	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, /* has never been switched to */
		158	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
134	};	159	};
135		160
136	/* this is a structure representing a perl-level coroutine */	161	/* this is a structure representing a perl-level coroutine */
137	struct coro {	162	struct coro {
138	/* the c coroutine allocated to this perl coroutine, if any */	163	/* the c coroutine allocated to this perl coroutine, if any */
139	coro_cctx *cctx;	164	coro_cctx *cctx;
140		165
141	/* data associated with this coroutine (initial args) */	166	/* data associated with this coroutine (initial args) */
142	AV *args;	167	AV *args;
143	int refcnt;	168	int refcnt;
144	int flags;	169	int save; /* CORO_SAVE flags */
		170	int flags; /* CF_ flags */
145		171
146	/* optionally saved, might be zero */	172	/* optionally saved, might be zero */
147	AV *defav;	173	AV defav; / @_ */
148	SV *defsv;	174	SV defsv; / $_ */
149	SV *errsv;	175	SV errsv; / $@ */
		176	SV irssv; / $/ */
		177	SV irssv_sv; / real $/ cache */
150		178
151	#define VAR(name,type) type name;	179	#define VAR(name,type) type name;
152	# include "state.h"	180	# include "state.h"
153	#undef VAR	181	#undef VAR
154		182
…		…
240		268
241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	271	else
244	{	272	{
245	#if 0	273	#if PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	274	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	275	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	276	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	277	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	278	SvREFCNT_dec (cp);
…		…
277	}	305	}
278		306
279	#define SB do {	307	#define SB do {
280	#define SE } while (0)	308	#define SE } while (0)
281		309
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	310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
286		311
287	static void	312	static void
288	load_state(Coro__State c)	313	load_perl (Coro__State c)
289	{	314	{
290	#define VAR(name,type) PL_ ## name = c->name;	315	#define VAR(name,type) PL_ ## name = c->name;
291	# include "state.h"	316	# include "state.h"
292	#undef VAR	317	#undef VAR
293		318
294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
296	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	321	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		322	if (c->irssv)
		323	{
		324	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		325	SvREFCNT_dec (c->irssv);
		326	else
		327	{
		328	REPLACE_SV (PL_rs, c->irssv);
		329	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		330	sv_setsv (c->irssv_sv, PL_rs);
		331	}
		332	}
297		333
298	{	334	{
299	dSP;	335	dSP;
300	CV *cv;	336	CV *cv;
301		337
…		…
310	PUTBACK;	346	PUTBACK;
311	}	347	}
312	}	348	}
313		349
314	static void	350	static void
315	save_state(Coro__State c, int flags)	351	save_perl (Coro__State c)
316	{	352	{
317	{	353	{
318	dSP;	354	dSP;
319	I32 cxix = cxstack_ix;	355	I32 cxix = cxstack_ix;
320	PERL_CONTEXT *ccstk = cxstack;	356	PERL_CONTEXT *ccstk = cxstack;
…		…
323	/*	359	/*
324	* the worst thing you can imagine happens first - we have to save	360	* the worst thing you can imagine happens first - we have to save
325	* (and reinitialize) all cv's in the whole callchain :(	361	* (and reinitialize) all cv's in the whole callchain :(
326	*/	362	*/
327		363
		364	EXTEND (SP, 3 + 1);
328	PUSHs (Nullsv);	365	PUSHs (Nullsv);
329	/* this loop was inspired by pp_caller */	366	/* this loop was inspired by pp_caller */
330	for (;;)	367	for (;;)
331	{	368	{
332	while (cxix >= 0)	369	while (cxix >= 0)
333	{	370	{
334	PERL_CONTEXT *cx = &ccstk[cxix--];	371	PERL_CONTEXT *cx = &ccstk[cxix--];
335		372
336	if (CxTYPE(cx) == CXt_SUB)	373	if (CxTYPE (cx) == CXt_SUB)
337	{	374	{
338	CV *cv = cx->blk_sub.cv;	375	CV *cv = cx->blk_sub.cv;
339		376
340	if (CvDEPTH (cv))	377	if (CvDEPTH (cv))
341	{	378	{
342	EXTEND (SP, 3);	379	EXTEND (SP, 3);
343
344	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST (cv));
345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
346	PUSHs ((SV *)cv);	382	PUSHs ((SV *)cv);
347		383
348	CvDEPTH (cv) = 0;	384	CvDEPTH (cv) = 0;
349	get_padlist (cv);	385	get_padlist (cv);
350	}	386	}
351	}	387	}
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	}	388	}
361		389
362	if (top_si->si_type == PERLSI_MAIN)	390	if (top_si->si_type == PERLSI_MAIN)
363	break;	391	break;
364		392
…		…
368	}	396	}
369		397
370	PUTBACK;	398	PUTBACK;
371	}	399	}
372		400
373	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	401	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;	402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
375	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	403	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		404	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
376		405
377	#define VAR(name,type)c->name = PL_ ## name;	406	#define VAR(name,type)c->name = PL_ ## name;
378	# include "state.h"	407	# include "state.h"
379	#undef VAR	408	#undef VAR
380	}	409	}
…		…
383	* allocate various perl stacks. This is an exact copy	412	* allocate various perl stacks. This is an exact copy
384	* of perl.c:init_stacks, except that it uses less memory	413	* of perl.c:init_stacks, except that it uses less memory
385	* on the (sometimes correct) assumption that coroutines do	414	* on the (sometimes correct) assumption that coroutines do
386	* not usually need a lot of stackspace.	415	* not usually need a lot of stackspace.
387	*/	416	*/
		417	#if PREFER_PERL_FUNCTIONS
		418	# define coro_init_stacks init_stacks
		419	#else
388	static void	420	static void
389	coro_init_stacks ()	421	coro_init_stacks ()
390	{	422	{
391	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
392	PL_curstackinfo->si_type = PERLSI_MAIN;	424	PL_curstackinfo->si_type = PERLSI_MAIN;
393	PL_curstack = PL_curstackinfo->si_stack;	425	PL_curstack = PL_curstackinfo->si_stack;
394	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395		427
396	PL_stack_base = AvARRAY(PL_curstack);	428	PL_stack_base = AvARRAY(PL_curstack);
397	PL_stack_sp = PL_stack_base;	429	PL_stack_sp = PL_stack_base;
398	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399		431
400	New(50,PL_tmps_stack,96,SV*);	432	New(50,PL_tmps_stack,128,SV*);
401	PL_tmps_floor = -1;	433	PL_tmps_floor = -1;
402	PL_tmps_ix = -1;	434	PL_tmps_ix = -1;
403	PL_tmps_max = 96;	435	PL_tmps_max = 128;
404		436
405	New(54,PL_markstack,16,I32);	437	New(54,PL_markstack,32,I32);
406	PL_markstack_ptr = PL_markstack;	438	PL_markstack_ptr = PL_markstack;
407	PL_markstack_max = PL_markstack + 16;	439	PL_markstack_max = PL_markstack + 32;
408		440
409	#ifdef SET_MARK_OFFSET	441	#ifdef SET_MARK_OFFSET
410	SET_MARK_OFFSET;	442	SET_MARK_OFFSET;
411	#endif	443	#endif
412		444
413	New(54,PL_scopestack,16,I32);	445	New(54,PL_scopestack,32,I32);
414	PL_scopestack_ix = 0;	446	PL_scopestack_ix = 0;
415	PL_scopestack_max = 16;	447	PL_scopestack_max = 32;
416		448
417	New(54,PL_savestack,96,ANY);	449	New(54,PL_savestack,64,ANY);
418	PL_savestack_ix = 0;	450	PL_savestack_ix = 0;
419	PL_savestack_max = 96;	451	PL_savestack_max = 64;
420		452
421	#if !PERL_VERSION_ATLEAST (5,9,0)	453	#if !PERL_VERSION_ATLEAST (5,9,0)
422	New(54,PL_retstack,8,OP*);	454	New(54,PL_retstack,16,OP*);
423	PL_retstack_ix = 0;	455	PL_retstack_ix = 0;
424	PL_retstack_max = 8;	456	PL_retstack_max = 16;
425	#endif	457	#endif
426	}	458	}
		459	#endif
427		460
428	/*	461	/*
429	* destroy the stacks, the callchain etc...	462	* destroy the stacks, the callchain etc...
430	*/	463	*/
431	static void	464	static void
432	coro_destroy_stacks ()	465	coro_destroy_stacks ()
433	{	466	{
434	if (!IN_DESTRUCT)	467	if (!IN_DESTRUCT)
435	{	468	{
436	/* is this ugly, I ask? */	469	/* restore all saved variables and stuff */
437	LEAVE_SCOPE (0);	470	LEAVE_SCOPE (0);
		471	assert (PL_tmps_floor == -1);
438		472
439	/* sure it is, but more important: is it correct?? :/ */	473	/* free all temporaries */
440	FREETMPS;	474	FREETMPS;
		475	assert (PL_tmps_ix == -1);
441		476
		477	/* unwind all extra stacks */
442	/POPSTACK_TO (PL_mainstack);//D//use/	478	POPSTACK_TO (PL_mainstack);
		479
		480	/* unwind main stack */
		481	dounwind (-1);
443	}	482	}
444		483
445	while (PL_curstackinfo->si_next)	484	while (PL_curstackinfo->si_next)
446	PL_curstackinfo = PL_curstackinfo->si_next;	485	PL_curstackinfo = PL_curstackinfo->si_next;
447		486
448	while (PL_curstackinfo)	487	while (PL_curstackinfo)
449	{	488	{
450	PERL_SI *p = PL_curstackinfo->si_prev;	489	PERL_SI *p = PL_curstackinfo->si_prev;
451		490
452	{ /D//remove/
453	dSP;
454	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455	PUTBACK; /* possibly superfluous */
456	}
457
458	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
459	{
460	dounwind (-1);/D//remove/
461	SvREFCNT_dec (PL_curstackinfo->si_stack);	492	SvREFCNT_dec (PL_curstackinfo->si_stack);
462	}
463		493
464	Safefree (PL_curstackinfo->si_cxstack);	494	Safefree (PL_curstackinfo->si_cxstack);
465	Safefree (PL_curstackinfo);	495	Safefree (PL_curstackinfo);
466	PL_curstackinfo = p;	496	PL_curstackinfo = p;
467	}	497	}
…		…
482	* emulate part of the perl startup here.	512	* emulate part of the perl startup here.
483	*/	513	*/
484		514
485	coro_init_stacks ();	515	coro_init_stacks ();
486		516
487	PL_curcop = 0;	517	PL_curcop = &PL_compiling;
488	PL_in_eval = 0;	518	PL_in_eval = EVAL_NULL;
489	PL_curpm = 0;	519	PL_curpm = 0;
		520	PL_localizing = 0;
		521	PL_dirty = 0;
		522	PL_restartop = 0;
490		523
491	{	524	{
492	dSP;	525	dSP;
493	LOGOP myop;	526	LOGOP myop;
494		527
495	/* I have no idea why this is needed, but it is */
496	PUSHMARK (SP);
497
498	SvREFCNT_dec (GvAV (PL_defgv));	528	SvREFCNT_dec (GvAV (PL_defgv));
499	GvAV (PL_defgv) = coro->args; coro->args = 0;	529	GvAV (PL_defgv) = coro->args; coro->args = 0;
500		530
501	Zero (&myop, 1, LOGOP);	531	Zero (&myop, 1, LOGOP);
502	myop.op_next = Nullop;	532	myop.op_next = Nullop;
503	myop.op_flags = OPf_WANT_VOID;	533	myop.op_flags = OPf_WANT_VOID;
504		534
505	PL_op = (OP *)&myop;
506
507	PUSHMARK (SP);	535	PUSHMARK (SP);
508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	536	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
509	PUTBACK;	537	PUTBACK;
		538	PL_op = (OP *)&myop;
510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	539	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511	SPAGAIN;	540	SPAGAIN;
512
513	ENTER; /* necessary e.g. for dounwind */
514	}	541	}
		542
		543	ENTER; /* necessary e.g. for dounwind */
515	}	544	}
516		545
517	static void	546	static void
518	free_coro_mortal ()	547	free_coro_mortal ()
519	{	548	{
…		…
522	SvREFCNT_dec (coro_mortal);	551	SvREFCNT_dec (coro_mortal);
523	coro_mortal = 0;	552	coro_mortal = 0;
524	}	553	}
525	}	554	}
526		555
		556	/* inject a fake call to Coro::State::_cctx_init into the execution */
527	static void NOINLINE	557	static void NOINLINE
528	prepare_cctx (coro_cctx *cctx)	558	prepare_cctx (coro_cctx *cctx)
529	{	559	{
530	dSP;	560	dSP;
531	LOGOP myop;	561	LOGOP myop;
532		562
533	Zero (&myop, 1, LOGOP);	563	Zero (&myop, 1, LOGOP);
534	myop.op_next = PL_op;	564	myop.op_next = PL_op;
535	myop.op_flags = OPf_WANT_VOID;	565	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
536
537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538		566
539	PUSHMARK (SP);	567	PUSHMARK (SP);
		568	EXTEND (SP, 2);
		569	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	570	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541	PUTBACK;	571	PUTBACK;
		572	PL_op = (OP *)&myop;
542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	573	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543	SPAGAIN;	574	SPAGAIN;
544	}	575	}
545		576
546	static void	577	static void
547	coro_run (void *arg)	578	coro_run (void *arg)
548	{	579	{
549	/* coro_run is the alternative epilogue of transfer() */	580	/* coro_run is the alternative tail of transfer(), so unlock here. */
550	UNLOCK;	581	UNLOCK;
551		582
552	/*	583	/*
553	* this is a _very_ stripped down perl interpreter ;)	584	* this is a _very_ stripped down perl interpreter ;)
554	*/	585	*/
…		…
556		587
557	/* inject call to cctx_init */	588	/* inject call to cctx_init */
558	prepare_cctx ((coro_cctx *)arg);	589	prepare_cctx ((coro_cctx *)arg);
559		590
560	/* somebody will hit me for both perl_run and PL_restartop */	591	/* somebody will hit me for both perl_run and PL_restartop */
		592	PL_restartop = PL_op;
561	perl_run (PL_curinterp);	593	perl_run (PL_curinterp);
562		594
563	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	595	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
564	abort ();	596	abort ();
565	}	597	}
…		…
569	{	601	{
570	coro_cctx *cctx;	602	coro_cctx *cctx;
571		603
572	++cctx_count;	604	++cctx_count;
573		605
574	New (0, cctx, 1, coro_cctx);	606	Newz (0, cctx, 1, coro_cctx);
575		607
576	#if HAVE_MMAP	608	#if HAVE_MMAP
577		609
578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	610	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
579	/* mmap suppsedly does allocate-on-write for us */	611	/* 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);	612	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
581		613
582	if (cctx->sptr == (void *)-1)	614	if (cctx->sptr == (void *)-1)
583	{	615	{
584	perror ("FATAL: unable to mmap stack for coroutine");	616	perror ("FATAL: unable to mmap stack for coroutine");
…		…
613		645
614	return cctx;	646	return cctx;
615	}	647	}
616		648
617	static void	649	static void
618	cctx_free (coro_cctx *cctx)	650	cctx_destroy (coro_cctx *cctx)
619	{	651	{
620	if (!cctx)	652	if (!cctx)
621	return;	653	return;
622		654
623	--cctx_count;	655	--cctx_count;
…		…
640	{	672	{
641	coro_cctx *cctx;	673	coro_cctx *cctx;
642		674
643	if (cctx_first)	675	if (cctx_first)
644	{	676	{
645	--cctx_idle;
646	cctx = cctx_first;	677	cctx = cctx_first;
647	cctx_first = cctx->next;	678	cctx_first = cctx->next;
		679	--cctx_idle;
648	}	680	}
649	else	681	else
650	{	682	{
651	cctx = cctx_new ();	683	cctx = cctx_new ();
652	PL_op = PL_op->op_next;	684	PL_op = PL_op->op_next;
…		…
656	}	688	}
657		689
658	static void	690	static void
659	cctx_put (coro_cctx *cctx)	691	cctx_put (coro_cctx *cctx)
660	{	692	{
		693	/* free another cctx if overlimit */
		694	if (cctx_idle >= MAX_IDLE_CCTX)
		695	{
		696	coro_cctx *first = cctx_first;
		697	cctx_first = first->next;
		698	--cctx_idle;
		699
		700	assert (!first->inuse);
		701	cctx_destroy (first);
		702	}
		703
661	++cctx_idle;	704	++cctx_idle;
662	cctx->next = cctx_first;	705	cctx->next = cctx_first;
663	cctx_first = cctx;	706	cctx_first = cctx;
664	}	707	}
665		708
666	/* never call directly, always through the coro_state_transfer global variable */	709	/* never call directly, always through the coro_state_transfer global variable */
667	static void NOINLINE	710	static void NOINLINE
668	transfer (struct coro prev, struct coro next, int flags)	711	transfer (struct coro prev, struct coro next)
669	{	712	{
670	dSTACKLEVEL;	713	dSTACKLEVEL;
671		714
672	/* sometimes transfer is only called to set idle_sp */	715	/* sometimes transfer is only called to set idle_sp */
673	if (flags == TRANSFER_SET_STACKLEVEL)	716	if (!next)
		717	{
674	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	718	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		719	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		720	}
675	else if (prev != next)	721	else if (prev != next)
676	{	722	{
677	coro_cctx *prev__cctx;	723	coro_cctx *prev__cctx;
678		724
679	if (!prev->cctx)	725	if (prev->flags & CF_NEW)
680	{	726	{
681	/* create a new empty context */	727	/* create a new empty context */
682	Newz (0, prev->cctx, 1, coro_cctx);	728	Newz (0, prev->cctx, 1, coro_cctx);
683	prev->cctx->inuse = 1;	729	prev->cctx->inuse = 1;
		730	prev->flags &= ~CF_NEW;
684	prev->flags \|= CF_RUNNING;	731	prev->flags \|= CF_RUNNING;
685	}	732	}
686		733
		734	/TODO: must not croak here /
687	if (!prev->flags & CF_RUNNING)	735	if (!prev->flags & CF_RUNNING)
688	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	736	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
689		737
690	if (next->flags & CF_RUNNING)	738	if (next->flags & CF_RUNNING)
691	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	739	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
692		740
		741	if (next->flags & CF_DESTROYED)
		742	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		743
693	prev->flags &= ~CF_RUNNING;	744	prev->flags &= ~CF_RUNNING;
694	next->flags \|= CF_RUNNING;	745	next->flags \|= CF_RUNNING;
695		746
696	LOCK;	747	LOCK;
697		748
698	if (next->mainstack)	749	if (next->flags & CF_NEW)
699	{	750	{
700	/* coroutine already started */	751	/* need to start coroutine */
701	SAVE (prev, flags);	752	next->flags &= ~CF_NEW;
702	LOAD (next);	753	/* first get rid of the old state */
		754	save_perl (prev);
		755	/* setup coroutine call */
		756	setup_coro (next);
		757	/* need a new stack */
		758	assert (!next->cctx);
703	}	759	}
704	else	760	else
705	{	761	{
706	/* need to start coroutine */	762	/* coroutine already started */
707	/* first get rid of the old state */	763	save_perl (prev);
708	SAVE (prev, -1);	764	load_perl (next);
709	/* setup coroutine call */
710	setup_coro (next);
711	/* need a new stack */
712	assert (!next->stack);
713	}	765	}
714		766
715	prev__cctx = prev->cctx;	767	prev__cctx = prev->cctx;
716		768
717	/* possibly "free" the cctx */	769	/* possibly "free" the cctx */
718	if (prev__cctx->idle_sp == STACKLEVEL)	770	if (prev__cctx->idle_sp == STACKLEVEL)
719	{	771	{
720	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	772	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
721	assert (PL_top_env == prev__cctx->top_env);	773	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		774
		775	prev->cctx = 0;
722		776
723	cctx_put (prev__cctx);	777	cctx_put (prev__cctx);
724	prev->cctx = 0;	778	prev__cctx->inuse = 0;
725	}	779	}
726		780
727	if (!next->cctx)	781	if (!next->cctx)
		782	{
728	next->cctx = cctx_get ();	783	next->cctx = cctx_get ();
		784	assert (!next->cctx->inuse);
		785	next->cctx->inuse = 1;
		786	}
729		787
730	if (prev__cctx != next->cctx)	788	if (prev__cctx != next->cctx)
731	{	789	{
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;	790	prev__cctx->top_env = PL_top_env;
739	PL_top_env = next->cctx->top_env;	791	PL_top_env = next->cctx->top_env;
740	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
741	}	793	}
742		794
743	free_coro_mortal ();	795	free_coro_mortal ();
744
745	UNLOCK;	796	UNLOCK;
746	}	797	}
747	}	798	}
748		799
749	struct transfer_args	800	struct transfer_args
750	{	801	{
751	struct coro prev, next;	802	struct coro prev, next;
752	int flags;
753	};	803	};
754		804
755	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	805	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
756		806
757	static void	807	static int
758	coro_state_destroy (struct coro *coro)	808	coro_state_destroy (struct coro *coro)
759	{	809	{
760	if (coro->refcnt--)	810	if (coro->flags & CF_DESTROYED)
761	return;	811	return 0;
762		812
763	if (coro->flags & CF_RUNNING)	813	coro->flags \|= CF_DESTROYED;
764	croak ("FATAL: tried to destroy currently running coroutine");
765		814
766	if (coro->mainstack && coro->mainstack != main_mainstack)	815	if (coro->mainstack && coro->mainstack != main_mainstack)
767	{	816	{
		817	assert (!(coro->flags & CF_RUNNING));
		818
768	struct coro temp;	819	struct coro temp;
		820	Zero (&temp, 1, struct coro);
		821	temp.save = CORO_SAVE_ALL;
769		822
770	SAVE ((&temp), TRANSFER_SAVE_ALL);	823	if (coro->flags & CF_RUNNING)
771	LOAD (coro);	824	croak ("FATAL: tried to destroy currently running coroutine");
		825
		826	save_perl (&temp);
		827	load_perl (coro);
772		828
773	coro_destroy_stacks ();	829	coro_destroy_stacks ();
774		830
775	LOAD ((&temp)); /* this will get rid of defsv etc.. */	831	load_perl (&temp); /* this will get rid of defsv etc.. */
776		832
777	coro->mainstack = 0;	833	coro->mainstack = 0;
778	}	834	}
779		835
780	cctx_free (coro->cctx);	836	cctx_destroy (coro->cctx);
781	SvREFCNT_dec (coro->args);	837	SvREFCNT_dec (coro->args);
782	Safefree (coro);	838
		839	return 1;
783	}	840	}
784		841
785	static int	842	static int
786	coro_state_clear (pTHX_ SV sv, MAGIC mg)	843	coro_state_free (pTHX_ SV sv, MAGIC mg)
787	{	844	{
788	struct coro coro = (struct coro )mg->mg_ptr;	845	struct coro coro = (struct coro )mg->mg_ptr;
789	mg->mg_ptr = 0;	846	mg->mg_ptr = 0;
790		847
		848	if (--coro->refcnt < 0)
		849	{
791	coro_state_destroy (coro);	850	coro_state_destroy (coro);
		851	Safefree (coro);
		852	}
792		853
793	return 0;	854	return 0;
794	}	855	}
795		856
796	static int	857	static int
…		…
803	return 0;	864	return 0;
804	}	865	}
805		866
806	static MGVTBL coro_state_vtbl = {	867	static MGVTBL coro_state_vtbl = {
807	0, 0, 0, 0,	868	0, 0, 0, 0,
808	coro_state_clear,	869	coro_state_free,
809	0,	870	0,
810	#ifdef MGf_DUP	871	#ifdef MGf_DUP
811	coro_state_dup,	872	coro_state_dup,
812	#else	873	#else
813	# define MGf_DUP 0	874	# define MGf_DUP 0
…		…
835	assert (mg->mg_type == PERL_MAGIC_ext);	896	assert (mg->mg_type == PERL_MAGIC_ext);
836	return (struct coro *)mg->mg_ptr;	897	return (struct coro *)mg->mg_ptr;
837	}	898	}
838		899
839	static void	900	static void
840	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	901	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
841	{	902	{
842	ta->prev = SvSTATE (prev);	903	ta->prev = SvSTATE (prev_sv);
843	ta->next = SvSTATE (next);	904	ta->next = SvSTATE (next_sv);
844	ta->flags = flags;
845	}	905	}
846		906
847	static void	907	static void
848	api_transfer (SV prev, SV next, int flags)	908	api_transfer (SV prev_sv, SV next_sv)
849	{	909	{
850	dTHX;
851	struct transfer_args ta;	910	struct transfer_args ta;
852		911
853	prepare_transfer (&ta, prev, next, flags);	912	prepare_transfer (&ta, prev_sv, next_sv);
854	TRANSFER (ta);	913	TRANSFER (ta);
		914	}
		915
		916	static int
		917	api_save (SV *coro_sv, int new_save)
		918	{
		919	struct coro *coro = SvSTATE (coro_sv);
		920	int old_save = coro->save;
		921
		922	if (new_save >= 0)
		923	coro->save = new_save;
		924
		925	return old_save;
855	}	926	}
856		927
857	/ Coro ******************************************************************/	928	/ Coro ******************************************************************/
858		929
859	#define PRIO_MAX 3	930	#define PRIO_MAX 3
…		…
862	#define PRIO_LOW -1	933	#define PRIO_LOW -1
863	#define PRIO_IDLE -3	934	#define PRIO_IDLE -3
864	#define PRIO_MIN -4	935	#define PRIO_MIN -4
865		936
866	/* for Coro.pm */	937	/* for Coro.pm */
867	static GV coro_current, coro_idle;	938	static SV *coro_current;
868	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	939	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
869	static int coro_nready;	940	static int coro_nready;
870		941
871	static void	942	static void
872	coro_enq (SV *coro_sv)	943	coro_enq (SV *coro_sv)
…		…
905	coro = SvSTATE (coro_sv);	976	coro = SvSTATE (coro_sv);
906		977
907	if (coro->flags & CF_READY)	978	if (coro->flags & CF_READY)
908	return 0;	979	return 0;
909		980
910	if (coro->flags & CF_RUNNING)
911	croak ("Coro::ready called on currently running coroutine");
912
913	coro->flags \|= CF_READY;	981	coro->flags \|= CF_READY;
914		982
915	LOCK;	983	LOCK;
916	coro_enq (SvREFCNT_inc (coro_sv));	984	coro_enq (SvREFCNT_inc (coro_sv));
917	UNLOCK;	985	UNLOCK;
…		…
920	}	988	}
921		989
922	static int	990	static int
923	api_is_ready (SV *coro_sv)	991	api_is_ready (SV *coro_sv)
924	{	992	{
925	return !!SvSTATE (coro_sv)->flags & CF_READY;	993	return !!(SvSTATE (coro_sv)->flags & CF_READY);
926	}	994	}
927		995
928	static void	996	static void
929	prepare_schedule (struct transfer_args *ta)	997	prepare_schedule (struct transfer_args *ta)
930	{	998	{
931	SV current, prev, *next;	999	SV prev_sv, next_sv;
932
933	current = GvSV (coro_current);
934		1000
935	for (;;)	1001	for (;;)
936	{	1002	{
937	LOCK;	1003	LOCK;
938	next = coro_deq (PRIO_MIN);	1004	next_sv = coro_deq (PRIO_MIN);
939	UNLOCK;	1005	UNLOCK;
940		1006
		1007	/* nothing to schedule: call the idle handler */
941	if (next)	1008	if (!next_sv)
942	break;
943
944	{	1009	{
945	dSP;	1010	dSP;
946		1011
947	ENTER;	1012	ENTER;
948	SAVETMPS;	1013	SAVETMPS;
949		1014
950	PUSHMARK (SP);	1015	PUSHMARK (SP);
951	PUTBACK;	1016	PUTBACK;
952	call_sv (GvSV (coro_idle), G_DISCARD);	1017	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
953		1018
954	FREETMPS;	1019	FREETMPS;
955	LEAVE;	1020	LEAVE;
		1021	continue;
956	}	1022	}
957	}
958		1023
959	prev = SvRV (current);	1024	ta->next = SvSTATE (next_sv);
960	SvRV (current) = next;	1025
		1026	/* cannot transfer to destroyed coros, skip and look for next */
		1027	if (ta->next->flags & CF_DESTROYED)
		1028	{
		1029	SvREFCNT_dec (next_sv);
		1030	continue;
		1031	}
		1032
		1033	break;
		1034	}
961		1035
962	/* free this only after the transfer */	1036	/* free this only after the transfer */
		1037	prev_sv = SvRV (coro_current);
		1038	SvRV_set (coro_current, next_sv);
		1039	ta->prev = SvSTATE (prev_sv);
		1040
		1041	assert (ta->next->flags & CF_READY);
		1042	ta->next->flags &= ~CF_READY;
		1043
963	LOCK;	1044	LOCK;
964	free_coro_mortal ();	1045	free_coro_mortal ();
		1046	coro_mortal = prev_sv;
965	UNLOCK;	1047	UNLOCK;
966	coro_mortal = prev;
967
968	ta->prev = SvSTATE (prev);
969	ta->next = SvSTATE (next);
970	ta->flags = TRANSFER_SAVE_ALL;
971
972	ta->next->flags &= ~CF_READY;
973	}	1048	}
974		1049
975	static void	1050	static void
976	prepare_cede (struct transfer_args *ta)	1051	prepare_cede (struct transfer_args *ta)
977	{	1052	{
978	api_ready (GvSV (coro_current));	1053	api_ready (coro_current);
979
980	prepare_schedule (ta);	1054	prepare_schedule (ta);
981	}	1055	}
982		1056
		1057	static int
		1058	prepare_cede_notself (struct transfer_args *ta)
		1059	{
		1060	if (coro_nready)
		1061	{
		1062	SV *prev = SvRV (coro_current);
		1063	prepare_schedule (ta);
		1064	api_ready (prev);
		1065	return 1;
		1066	}
		1067	else
		1068	return 0;
		1069	}
		1070
983	static void	1071	static void
984	api_schedule (void)	1072	api_schedule (void)
985	{	1073	{
986	dTHX;
987	struct transfer_args ta;	1074	struct transfer_args ta;
988		1075
989	prepare_schedule (&ta);	1076	prepare_schedule (&ta);
990	TRANSFER (ta);	1077	TRANSFER (ta);
991	}	1078	}
992		1079
993	static void	1080	static int
994	api_cede (void)	1081	api_cede (void)
995	{	1082	{
996	dTHX;
997	struct transfer_args ta;	1083	struct transfer_args ta;
998		1084
999	prepare_cede (&ta);	1085	prepare_cede (&ta);
		1086
		1087	if (ta.prev != ta.next)
		1088	{
1000	TRANSFER (ta);	1089	TRANSFER (ta);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
		1094	}
		1095
		1096	static int
		1097	api_cede_notself (void)
		1098	{
		1099	struct transfer_args ta;
		1100
		1101	if (prepare_cede_notself (&ta))
		1102	{
		1103	TRANSFER (ta);
		1104	return 1;
		1105	}
		1106	else
		1107	return 0;
1001	}	1108	}
1002		1109
1003	MODULE = Coro::State PACKAGE = Coro::State	1110	MODULE = Coro::State PACKAGE = Coro::State
1004		1111
1005	PROTOTYPES: DISABLE	1112	PROTOTYPES: DISABLE
…		…
1011	#endif	1118	#endif
1012	BOOT_PAGESIZE;	1119	BOOT_PAGESIZE;
1013		1120
1014	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1121	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1015		1122
1016	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1123	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1017	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1124	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1018	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1125	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1126	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1127	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1019		1128
1020	main_mainstack = PL_mainstack;	1129	main_mainstack = PL_mainstack;
1021		1130
1022	coroapi.ver = CORO_API_VERSION;	1131	coroapi.ver = CORO_API_VERSION;
1023	coroapi.transfer = api_transfer;	1132	coroapi.transfer = api_transfer;
…		…
1033	HV *hv;	1142	HV *hv;
1034	int i;	1143	int i;
1035		1144
1036	Newz (0, coro, 1, struct coro);	1145	Newz (0, coro, 1, struct coro);
1037	coro->args = newAV ();	1146	coro->args = newAV ();
		1147	coro->save = CORO_SAVE_ALL;
		1148	coro->flags = CF_NEW;
1038		1149
1039	hv = newHV ();	1150	hv = newHV ();
1040	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1151	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));	1152	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1042		1153
1043	for (i = 1; i < items; i++)	1154	for (i = 1; i < items; i++)
1044	av_push (coro->args, newSVsv (ST (i)));	1155	av_push (coro->args, newSVsv (ST (i)));
1045	}	1156	}
1046	OUTPUT:	1157	OUTPUT:
		1158	RETVAL
		1159
		1160	int
		1161	save (SV *coro, int new_save = -1)
		1162	CODE:
		1163	RETVAL = api_save (coro, new_save);
		1164	OUTPUT:
1047	RETVAL	1165	RETVAL
1048		1166
1049	void	1167	void
1050	_set_stacklevel (...)	1168	_set_stacklevel (...)
1051	ALIAS:	1169	ALIAS:
1052	Coro::State::transfer = 1	1170	Coro::State::transfer = 1
1053	Coro::schedule = 2	1171	Coro::schedule = 2
1054	Coro::cede = 3	1172	Coro::cede = 3
1055	Coro::Cont::yield = 4	1173	Coro::cede_notself = 4
1056	CODE:	1174	CODE:
1057	{	1175	{
1058	struct transfer_args ta;	1176	struct transfer_args ta;
1059		1177
1060	switch (ix)	1178	switch (ix)
1061	{	1179	{
1062	case 0:	1180	case 0:
1063	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1181	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1064	ta.next = 0;	1182	ta.next = 0;
1065	ta.flags = TRANSFER_SET_STACKLEVEL;
1066	break;	1183	break;
1067		1184
1068	case 1:	1185	case 1:
1069	if (items != 3)	1186	if (items != 2)
1070	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1187	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1071		1188
1072	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1189	prepare_transfer (&ta, ST (0), ST (1));
1073	break;	1190	break;
1074		1191
1075	case 2:	1192	case 2:
1076	prepare_schedule (&ta);	1193	prepare_schedule (&ta);
1077	break;	1194	break;
…		…
1079	case 3:	1196	case 3:
1080	prepare_cede (&ta);	1197	prepare_cede (&ta);
1081	break;	1198	break;
1082		1199
1083	case 4:	1200	case 4:
1084	{	1201	if (!prepare_cede_notself (&ta))
1085	SV *yieldstack;	1202	XSRETURN_EMPTY;
1086	SV *sv;
1087	AV *defav = GvAV (PL_defgv);
1088		1203
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;	1204	break;
1108
1109	}	1205	}
1110		1206
		1207	BARRIER;
1111	TRANSFER (ta);	1208	TRANSFER (ta);
1112	}	1209	}
1113		1210
1114	void	1211	bool
1115	_clone_state_from (SV dst, SV src)	1212	_destroy (SV *coro_sv)
1116	CODE:	1213	CODE:
1117	{	1214	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1118	struct coro *coro_src = SvSTATE (src);	1215	OUTPUT:
1119		1216	RETVAL
1120	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1121
1122	++coro_src->refcnt;
1123	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1124	}
1125		1217
1126	void	1218	void
1127	_exit (code)	1219	_exit (code)
1128	int code	1220	int code
1129	PROTOTYPE: $	1221	PROTOTYPE: $
…		…
1157	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1249	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1158	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1250	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1159	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1251	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1160	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1252	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1161		1253
1162	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1254	coro_current = get_sv ("Coro::current", FALSE);
1163	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1255	SvREADONLY_on (coro_current);
1164		1256
1165	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1257	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1166	coro_ready[i] = newAV ();	1258	coro_ready[i] = newAV ();
1167		1259
1168	{	1260	{
1169	SV *sv = perl_get_sv("Coro::API", 1);	1261	SV *sv = perl_get_sv("Coro::API", 1);
1170		1262
1171	coroapi.schedule = api_schedule;	1263	coroapi.schedule = api_schedule;
		1264	coroapi.save = api_save;
1172	coroapi.cede = api_cede;	1265	coroapi.cede = api_cede;
		1266	coroapi.cede_notself = api_cede_notself;
1173	coroapi.ready = api_ready;	1267	coroapi.ready = api_ready;
1174	coroapi.is_ready = api_is_ready;	1268	coroapi.is_ready = api_is_ready;
1175	coroapi.nready = &coro_nready;	1269	coroapi.nready = &coro_nready;
1176	coroapi.current = coro_current;	1270	coroapi.current = coro_current;
1177		1271
1178	GCoroAPI = &coroapi;	1272	GCoroAPI = &coroapi;
1179	sv_setiv (sv, (IV)&coroapi);	1273	sv_setiv (sv, (IV)&coroapi);
1180	SvREADONLY_on (sv);	1274	SvREADONLY_on (sv);
1181	}	1275	}
1182	}	1276	}
		1277
		1278	void
		1279	_set_current (SV *current)
		1280	PROTOTYPE: $
		1281	CODE:
		1282	SvREFCNT_dec (SvRV (coro_current));
		1283	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1183		1284
1184	int	1285	int
1185	prio (Coro::State coro, int newprio = 0)	1286	prio (Coro::State coro, int newprio = 0)
1186	ALIAS:	1287	ALIAS:
1187	nice = 1	1288	nice = 1
…		…
1190	RETVAL = coro->prio;	1291	RETVAL = coro->prio;
1191		1292
1192	if (items > 1)	1293	if (items > 1)
1193	{	1294	{
1194	if (ix)	1295	if (ix)
1195	newprio += coro->prio;	1296	newprio = coro->prio - newprio;
1196		1297
1197	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1298	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1198	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1299	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1199		1300
1200	coro->prio = newprio;	1301	coro->prio = newprio;
1201	}	1302	}
1202	}	1303	}
		1304	OUTPUT:
		1305	RETVAL
1203		1306
1204	SV *	1307	SV *
1205	ready (SV *self)	1308	ready (SV *self)
1206	PROTOTYPE: $	1309	PROTOTYPE: $
1207	CODE:	1310	CODE:
…		…
1229		1332
1230	SV *	1333	SV *
1231	_get_state ()	1334	_get_state ()
1232	CODE:	1335	CODE:
1233	{	1336	{
1234	struct {	1337	struct io_state *data;
1235	int errorno;
1236	int laststype;
1237	int laststatval;
1238	Stat_t statcache;
1239	} data;
1240		1338
		1339	RETVAL = newSV (sizeof (struct io_state));
		1340	data = (struct io_state *)SvPVX (RETVAL);
		1341	SvCUR_set (RETVAL, sizeof (struct io_state));
		1342	SvPOK_only (RETVAL);
		1343
1241	data.errorno = errno;	1344	data->errorno = errno;
1242	data.laststype = PL_laststype;	1345	data->laststype = PL_laststype;
1243	data.laststatval = PL_laststatval;	1346	data->laststatval = PL_laststatval;
1244	data.statcache = PL_statcache;	1347	data->statcache = PL_statcache;
1245
1246	RETVAL = newSVpvn ((char *)&data, sizeof data);
1247	}	1348	}
1248	OUTPUT:	1349	OUTPUT:
1249	RETVAL	1350	RETVAL
1250		1351
1251	void	1352	void
1252	_set_state (char *data_)	1353	_set_state (char *data_)
1253	PROTOTYPE: $	1354	PROTOTYPE: $
1254	CODE:	1355	CODE:
1255	{	1356	{
1256	struct {	1357	struct io_state data = (void )data_;
1257	int errorno;
1258	int laststype;
1259	int laststatval;
1260	Stat_t statcache;
1261	} data = (void )data_;
1262		1358
1263	errno = data->errorno;	1359	errno = data->errorno;
1264	PL_laststype = data->laststype;	1360	PL_laststype = data->laststype;
1265	PL_laststatval = data->laststatval;	1361	PL_laststatval = data->laststatval;
1266	PL_statcache = data->statcache;	1362	PL_statcache = data->statcache;
1267	}	1363	}
		1364

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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 1.134 by root, Thu Jan 4 23:49:27 2007 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 1.134 by root, Thu Jan 4 23:49:27 2007 UTC