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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC

…		…
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
9	#if USE_VALGRIND	9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>	10	# include <valgrind/valgrind.h>
11	#endif	11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
12		15
13	#define PERL_VERSION_ATLEAST(a,b,c) \	16	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \	17	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \	18	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \	19	&& (PERL_VERSION > (b) \
…		…
35	# ifndef IS_PADCONST	38	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0	39	# define IS_PADCONST(v) 0
37	# endif	40	# endif
38	#endif	41	#endif
39		42
		43	/* 5.8.7 */
		44	#ifndef SvRV_set
		45	# define SvRV_set(s,v) SvRV(s) = (v)
		46	#endif
		47
40	#include <stdio.h>	48	#include <stdio.h>
41	#include <errno.h>	49	#include <errno.h>
		50	#include <assert.h>
42		51
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD	53	# undef STACKGUARD
45	#endif	54	#endif
46		55
…		…
87		96
88	#define NOINLINE attribute ((noinline))	97	#define NOINLINE attribute ((noinline))
89		98
90	#include "CoroAPI.h"	99	#include "CoroAPI.h"
91		100
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93
94	#ifdef USE_ITHREADS	101	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	102	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	103	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	104	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	105	#else
99	# define LOCK (void)0	106	# define LOCK (void)0
100	# define UNLOCK (void)0	107	# define UNLOCK (void)0
101	#endif	108	#endif
102		109
		110	struct io_state
		111	{
		112	int errorno;
		113	I32 laststype;
		114	int laststatval;
		115	Stat_t statcache;
		116	};
		117
103	static struct CoroAPI coroapi;	118	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	119	static AV main_mainstack; / used to differentiate between $main and others */
105	static HV coro_state_stash, coro_stash;	120	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	121	static SV coro_mortal; / will be freed after next transfer */
107		122
		123	static struct coro_cctx *cctx_first;
		124	static int cctx_count, cctx_idle;
		125
108	/* this is a structure representing a c-level coroutine */	126	/* this is a structure representing a c-level coroutine */
109	typedef struct coro_cctx {	127	typedef struct coro_cctx {
110	struct coro_cctx *next;	128	struct coro_cctx *next;
111		129
112	/* the stack */	130	/* the stack */
…		…
116	/* cpu state */	134	/* cpu state */
117	void idle_sp; / sp of top-level transfer/schedule/cede call */	135	void idle_sp; / sp of top-level transfer/schedule/cede call */
118	JMPENV *top_env;	136	JMPENV *top_env;
119	coro_context cctx;	137	coro_context cctx;
120		138
		139	int inuse;
		140
121	#if USE_VALGRIND	141	#if USE_VALGRIND
122	int valgrind_id;	142	int valgrind_id;
123	#endif	143	#endif
124	} coro_cctx;	144	} coro_cctx;
		145
		146	enum {
		147	CF_RUNNING = 0x0001, /* coroutine is running */
		148	CF_READY = 0x0002, /* coroutine is ready */
		149	CF_NEW = 0x0004, /* ahs never been switched to */
		150	};
125		151
126	/* this is a structure representing a perl-level coroutine */	152	/* this is a structure representing a perl-level coroutine */
127	struct coro {	153	struct coro {
128	/* the c coroutine allocated to this perl coroutine, if any */	154	/* the c coroutine allocated to this perl coroutine, if any */
129	coro_cctx *cctx;	155	coro_cctx *cctx;
130		156
131	/* data associated with this coroutine (initial args) */	157	/* data associated with this coroutine (initial args) */
132	AV *args;	158	AV *args;
133	int refcnt;	159	int refcnt;
		160	int save; /* CORO_SAVE flags */
		161	int flags; /* CF_ flags */
134		162
135	/* optionally saved, might be zero */	163	/* optionally saved, might be zero */
136	AV *defav;	164	AV defav; / @_ */
137	SV *defsv;	165	SV defsv; / $_ */
138	SV *errsv;	166	SV errsv; / $@ */
		167	SV irssv; / $/ */
		168	SV irssv_sv; / real $/ cache */
139		169
140	/* saved global state not related to stacks */	170	#define VAR(name,type) type name;
141	U8 dowarn;	171	# include "state.h"
142	I32 in_eval;	172	#undef VAR
143
144	/* the stacks and related info (callchain etc..) */
145	PERL_SI *curstackinfo;
146	AV *curstack;
147	AV *mainstack;
148	SV **stack_sp;
149	OP *op;
150	SV **curpad;
151	AV *comppad;
152	CV *compcv;
153	SV **stack_base;
154	SV **stack_max;
155	SV **tmps_stack;
156	I32 tmps_floor;
157	I32 tmps_ix;
158	I32 tmps_max;
159	I32 *markstack;
160	I32 *markstack_ptr;
161	I32 *markstack_max;
162	I32 *scopestack;
163	I32 scopestack_ix;
164	I32 scopestack_max;
165	ANY *savestack;
166	I32 savestack_ix;
167	I32 savestack_max;
168	OP **retstack;
169	I32 retstack_ix;
170	I32 retstack_max;
171	PMOP *curpm;
172	COP *curcop;
173		173
174	/* coro process data */	174	/* coro process data */
175	int prio;	175	int prio;
176	};	176	};
177		177
…		…
241		241
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	242	#define PERL_MAGIC_coro PERL_MAGIC_ext
243		243
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
245		245
		246	#define CORO_MAGIC(cv) \
		247	SvMAGIC (cv) \
		248	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		249	? SvMAGIC (cv) \
		250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		251	: 0
		252
246	/* the next two functions merely cache the padlists */	253	/* the next two functions merely cache the padlists */
247	static void	254	static void
248	get_padlist (CV *cv)	255	get_padlist (CV *cv)
249	{	256	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	257	MAGIC *mg = CORO_MAGIC (cv);
		258	AV *av;
251		259
252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
254	else	262	else
255	{	263	{
256	#if 0	264	#if 0
257	/* this is probably cleaner, but also slower? */	265	/* this is probably cleaner, but also slower? */
258	CV *cp = Perl_cv_clone (cv);	266	CV *cp = Perl_cv_clone (cv);
…		…
266	}	274	}
267		275
268	static void	276	static void
269	put_padlist (CV *cv)	277	put_padlist (CV *cv)
270	{	278	{
271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	279	MAGIC *mg = CORO_MAGIC (cv);
		280	AV *av;
272		281
273	if (!mg)	282	if (!mg)
274	{	283	{
275	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	284	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
276	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	285	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
277	mg->mg_virtual = &vtbl_coro;	286	mg->mg_virtual = &vtbl_coro;
278	mg->mg_obj = (SV *)newAV ();	287	mg->mg_obj = (SV *)newAV ();
279	}	288	}
280		289
281	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	290	av = (AV *)mg->mg_obj;
		291
		292	if (AvFILLp (av) >= AvMAX (av))
		293	av_extend (av, AvMAX (av) + 1);
		294
		295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
282	}	296	}
283		297
284	#define SB do {	298	#define SB do {
285	#define SE } while (0)	299	#define SE } while (0)
286		300
287	#define LOAD(state) load_state((state));
288	#define SAVE(state,flags) save_state((state),(flags));
289
290	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
291		302
292	static void	303	static void
293	load_state(Coro__State c)	304	load_perl (Coro__State c)
294	{	305	{
295	PL_dowarn = c->dowarn;	306	#define VAR(name,type) PL_ ## name = c->name;
296	PL_in_eval = c->in_eval;	307	# include "state.h"
297		308	#undef VAR
298	PL_curstackinfo = c->curstackinfo;
299	PL_curstack = c->curstack;
300	PL_mainstack = c->mainstack;
301	PL_stack_sp = c->stack_sp;
302	PL_op = c->op;
303	PL_curpad = c->curpad;
304	PL_comppad = c->comppad;
305	PL_compcv = c->compcv;
306	PL_stack_base = c->stack_base;
307	PL_stack_max = c->stack_max;
308	PL_tmps_stack = c->tmps_stack;
309	PL_tmps_floor = c->tmps_floor;
310	PL_tmps_ix = c->tmps_ix;
311	PL_tmps_max = c->tmps_max;
312	PL_markstack = c->markstack;
313	PL_markstack_ptr = c->markstack_ptr;
314	PL_markstack_max = c->markstack_max;
315	PL_scopestack = c->scopestack;
316	PL_scopestack_ix = c->scopestack_ix;
317	PL_scopestack_max = c->scopestack_max;
318	PL_savestack = c->savestack;
319	PL_savestack_ix = c->savestack_ix;
320	PL_savestack_max = c->savestack_max;
321	#if !PERL_VERSION_ATLEAST (5,9,0)
322	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;
325	#endif
326	PL_curpm = c->curpm;
327	PL_curcop = c->curcop;
328		309
329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		313	if (c->irssv)
		314	{
		315	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		316	SvREFCNT_dec (c->irssv);
		317	else
		318	{
		319	REPLACE_SV (PL_rs, c->irssv);
		320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		321	sv_setsv (c->irssv_sv, PL_rs);
		322	}
		323	}
332		324
333	{	325	{
334	dSP;	326	dSP;
335	CV *cv;	327	CV *cv;
336		328
337	/* now do the ugly restore mess */	329	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	330	while ((cv = (CV *)POPs))
339	{	331	{
340	AV padlist = (AV )POPs;
341
342	if (padlist)
343	{
344	put_padlist (cv); /* mark this padlist as available */	332	put_padlist (cv); /* mark this padlist as available */
345	CvPADLIST(cv) = padlist;	333	CvDEPTH (cv) = PTR2IV (POPs);
346	}	334	CvPADLIST (cv) = (AV *)POPs;
347
348	++CvDEPTH(cv);
349	}	335	}
350		336
351	PUTBACK;	337	PUTBACK;
352	}	338	}
353	}	339	}
354		340
355	static void	341	static void
356	save_state(Coro__State c, int flags)	342	save_perl (Coro__State c)
357	{	343	{
358	{	344	{
359	dSP;	345	dSP;
360	I32 cxix = cxstack_ix;	346	I32 cxix = cxstack_ix;
361	PERL_CONTEXT *ccstk = cxstack;	347	PERL_CONTEXT *ccstk = cxstack;
…		…
372	{	358	{
373	while (cxix >= 0)	359	while (cxix >= 0)
374	{	360	{
375	PERL_CONTEXT *cx = &ccstk[cxix--];	361	PERL_CONTEXT *cx = &ccstk[cxix--];
376		362
377	if (CxTYPE(cx) == CXt_SUB)	363	if (CxTYPE (cx) == CXt_SUB)
378	{	364	{
379	CV *cv = cx->blk_sub.cv;	365	CV *cv = cx->blk_sub.cv;
		366
380	if (CvDEPTH(cv))	367	if (CvDEPTH (cv))
381	{	368	{
382	EXTEND (SP, CvDEPTH(cv)*2);	369	EXTEND (SP, 3);
383		370
384	while (--CvDEPTH(cv))
385	{
386	/* this tells the restore code to increment CvDEPTH */
387	PUSHs (Nullsv);
388	PUSHs ((SV *)cv);
389	}
390
391	PUSHs ((SV *)CvPADLIST(cv));	371	PUSHs ((SV *)CvPADLIST (cv));
		372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
392	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
393		374
		375	CvDEPTH (cv) = 0;
394	get_padlist (cv);	376	get_padlist (cv);
395	}	377	}
396	}	378	}
397	#ifdef CXt_FORMAT	379	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)	380	else if (CxTYPE (cx) == CXt_FORMAT)
399	{	381	{
400	/* I never used formats, so how should I know how these are implemented? */	382	/* I never used formats, so how should I know how these are implemented? */
401	/* my bold guess is as a simple, plain sub... */	383	/* my bold guess is as a simple, plain sub... */
402	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	384	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
403	}	385	}
…		…
413	}	395	}
414		396
415	PUTBACK;	397	PUTBACK;
416	}	398	}
417		399
418	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;
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	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;
421		404
422	c->dowarn = PL_dowarn;	405	#define VAR(name,type)c->name = PL_ ## name;
423	c->in_eval = PL_in_eval;	406	# include "state.h"
424		407	#undef VAR
425	c->curstackinfo = PL_curstackinfo;
426	c->curstack = PL_curstack;
427	c->mainstack = PL_mainstack;
428	c->stack_sp = PL_stack_sp;
429	c->op = PL_op;
430	c->curpad = PL_curpad;
431	c->comppad = PL_comppad;
432	c->compcv = PL_compcv;
433	c->stack_base = PL_stack_base;
434	c->stack_max = PL_stack_max;
435	c->tmps_stack = PL_tmps_stack;
436	c->tmps_floor = PL_tmps_floor;
437	c->tmps_ix = PL_tmps_ix;
438	c->tmps_max = PL_tmps_max;
439	c->markstack = PL_markstack;
440	c->markstack_ptr = PL_markstack_ptr;
441	c->markstack_max = PL_markstack_max;
442	c->scopestack = PL_scopestack;
443	c->scopestack_ix = PL_scopestack_ix;
444	c->scopestack_max = PL_scopestack_max;
445	c->savestack = PL_savestack;
446	c->savestack_ix = PL_savestack_ix;
447	c->savestack_max = PL_savestack_max;
448	#if !PERL_VERSION_ATLEAST (5,9,0)
449	c->retstack = PL_retstack;
450	c->retstack_ix = PL_retstack_ix;
451	c->retstack_max = PL_retstack_max;
452	#endif
453	c->curpm = PL_curpm;
454	c->curcop = PL_curcop;
455	}	408	}
456		409
457	/*	410	/*
458	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
…		…
461	* not usually need a lot of stackspace.	414	* not usually need a lot of stackspace.
462	*/	415	*/
463	static void	416	static void
464	coro_init_stacks ()	417	coro_init_stacks ()
465	{	418	{
466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
467	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
468	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
470		423
471	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
472	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
473	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
474		427
475	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
476	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
477	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
478	PL_tmps_max = 96;	431	PL_tmps_max = 128;
479		432
480	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
481	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
482	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
483		436
484	#ifdef SET_MARK_OFFSET	437	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
486	#endif	439	#endif
487		440
488	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
489	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
490	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
491		444
492	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
493	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
494	PL_savestack_max = 96;	447	PL_savestack_max = 64;
495		448
496	#if !PERL_VERSION_ATLEAST (5,9,0)	449	#if !PERL_VERSION_ATLEAST (5,9,0)
497	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
498	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	452	PL_retstack_max = 16;
500	#endif	453	#endif
501	}	454	}
502		455
503	/*	456	/*
504	* destroy the stacks, the callchain etc...	457	* destroy the stacks, the callchain etc...
…		…
557	* emulate part of the perl startup here.	510	* emulate part of the perl startup here.
558	*/	511	*/
559		512
560	coro_init_stacks ();	513	coro_init_stacks ();
561		514
562	PL_curcop = 0;	515	PL_curcop = &PL_compiling;
563	PL_in_eval = 0;	516	PL_in_eval = EVAL_NULL;
564	PL_curpm = 0;	517	PL_curpm = 0;
		518	PL_localizing = 0;
		519	PL_dirty = 0;
		520	PL_restartop = 0;
565		521
566	{	522	{
567	dSP;	523	dSP;
568	LOGOP myop;	524	LOGOP myop;
569		525
570	/* I have no idea why this is needed, but it is */
571	PUSHMARK (SP);
572
573	SvREFCNT_dec (GvAV (PL_defgv));	526	SvREFCNT_dec (GvAV (PL_defgv));
574	GvAV (PL_defgv) = coro->args; coro->args = 0;	527	GvAV (PL_defgv) = coro->args; coro->args = 0;
575		528
576	Zero (&myop, 1, LOGOP);	529	Zero (&myop, 1, LOGOP);
577	myop.op_next = Nullop;	530	myop.op_next = Nullop;
578	myop.op_flags = OPf_WANT_VOID;	531	myop.op_flags = OPf_WANT_VOID;
579		532
		533	PUSHMARK (SP);
		534	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		535	PUTBACK;
580	PL_op = (OP *)&myop;	536	PL_op = (OP *)&myop;
581
582	PUSHMARK (SP);
583	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
584	PUTBACK;
585	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	537	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
586	SPAGAIN;	538	SPAGAIN;
587
588	ENTER; /* necessary e.g. for dounwind */
589	}	539	}
		540
		541	ENTER; /* necessary e.g. for dounwind */
590	}	542	}
591		543
592	static void	544	static void
593	free_coro_mortal ()	545	free_coro_mortal ()
594	{	546	{
…		…
597	SvREFCNT_dec (coro_mortal);	549	SvREFCNT_dec (coro_mortal);
598	coro_mortal = 0;	550	coro_mortal = 0;
599	}	551	}
600	}	552	}
601		553
		554	/* inject a fake call to Coro::State::_cctx_init into the execution */
602	static void NOINLINE	555	static void NOINLINE
603	prepare_cctx (coro_cctx *cctx)	556	prepare_cctx (coro_cctx *cctx)
604	{	557	{
605	dSP;	558	dSP;
606	LOGOP myop;	559	LOGOP myop;
607		560
608	Zero (&myop, 1, LOGOP);	561	Zero (&myop, 1, LOGOP);
609	myop.op_next = PL_op;	562	myop.op_next = PL_op;
610	myop.op_flags = OPf_WANT_VOID;	563	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
611
612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
613		564
614	PUSHMARK (SP);	565	PUSHMARK (SP);
		566	EXTEND (SP, 2);
		567	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	568	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
616	PUTBACK;	569	PUTBACK;
		570	PL_op = (OP *)&myop;
617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	571	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
618	SPAGAIN;	572	SPAGAIN;
619	}	573	}
620		574
621	static void	575	static void
622	coro_run (void *arg)	576	coro_run (void *arg)
623	{	577	{
624	/* coro_run is the alternative epilogue of transfer() */	578	/* coro_run is the alternative tail of transfer(), so unlock here. */
625	UNLOCK;	579	UNLOCK;
626		580
627	/*	581	/*
628	* this is a _very_ stripped down perl interpreter ;)	582	* this is a _very_ stripped down perl interpreter ;)
629	*/	583	*/
630	PL_top_env = &PL_start_env;	584	PL_top_env = &PL_start_env;
		585
631	/* inject call to cctx_init */	586	/* inject call to cctx_init */
632	prepare_cctx ((coro_cctx *)arg);	587	prepare_cctx ((coro_cctx *)arg);
633		588
634	/* somebody will hit me for both perl_run and PL_restartop */	589	/* somebody will hit me for both perl_run and PL_restartop */
		590	PL_restartop = PL_op;
635	perl_run (PL_curinterp);	591	perl_run (PL_curinterp);
636		592
637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	593	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
638	abort ();	594	abort ();
639	}	595	}
…		…
641	static coro_cctx *	597	static coro_cctx *
642	cctx_new ()	598	cctx_new ()
643	{	599	{
644	coro_cctx *cctx;	600	coro_cctx *cctx;
645		601
		602	++cctx_count;
		603
646	New (0, cctx, 1, coro_cctx);	604	Newz (0, cctx, 1, coro_cctx);
647		605
648	#if HAVE_MMAP	606	#if HAVE_MMAP
649		607
650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	608	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
651	/* mmap suppsedly does allocate-on-write for us */	609	/* mmap supposedly does allocate-on-write for us */
652	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	610	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
653		611
654	if (cctx->sptr == (void *)-1)	612	if (cctx->sptr == (void *)-1)
655	{	613	{
656	perror ("FATAL: unable to mmap stack for coroutine");	614	perror ("FATAL: unable to mmap stack for coroutine");
…		…
685		643
686	return cctx;	644	return cctx;
687	}	645	}
688		646
689	static void	647	static void
690	cctx_free (coro_cctx *cctx)	648	cctx_destroy (coro_cctx *cctx)
691	{	649	{
692	if (!cctx)	650	if (!cctx)
693	return;	651	return;
		652
		653	--cctx_count;
694		654
695	#if USE_VALGRIND	655	#if USE_VALGRIND
696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	656	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
697	#endif	657	#endif
698		658
…		…
703	#endif	663	#endif
704		664
705	Safefree (cctx);	665	Safefree (cctx);
706	}	666	}
707		667
708	static coro_cctx *cctx_first;
709	static int cctx_count, cctx_idle;
710
711	static coro_cctx *	668	static coro_cctx *
712	cctx_get ()	669	cctx_get ()
713	{	670	{
714	coro_cctx *cctx;	671	coro_cctx *cctx;
715		672
716	if (cctx_first)	673	if (cctx_first)
717	{	674	{
718	--cctx_idle;
719	cctx = cctx_first;	675	cctx = cctx_first;
720	cctx_first = cctx->next;	676	cctx_first = cctx->next;
		677	--cctx_idle;
721	}	678	}
722	else	679	else
723	{	680	{
724	++cctx_count;
725	cctx = cctx_new ();	681	cctx = cctx_new ();
726	PL_op = PL_op->op_next;	682	PL_op = PL_op->op_next;
727	}	683	}
728		684
729	return cctx;	685	return cctx;
730	}	686	}
731		687
732	static void	688	static void
733	cctx_put (coro_cctx *cctx)	689	cctx_put (coro_cctx *cctx)
734	{	690	{
		691	/* free another cctx if overlimit */
		692	if (cctx_idle >= MAX_IDLE_CCTX)
		693	{
		694	coro_cctx *first = cctx_first;
		695	cctx_first = first->next;
		696	--cctx_idle;
		697
		698	assert (!first->inuse);
		699	cctx_destroy (first);
		700	}
		701
735	++cctx_idle;	702	++cctx_idle;
736	cctx->next = cctx_first;	703	cctx->next = cctx_first;
737	cctx_first = cctx;	704	cctx_first = cctx;
738	}	705	}
739		706
740	/* never call directly, always through the coro_state_transfer global variable */	707	/* never call directly, always through the coro_state_transfer global variable */
741	static void NOINLINE	708	static void NOINLINE
742	transfer (struct coro prev, struct coro next, int flags)	709	transfer (struct coro prev, struct coro next)
743	{	710	{
744	dSTACKLEVEL;	711	dSTACKLEVEL;
745		712
746	/* sometimes transfer is only called to set idle_sp */	713	/* sometimes transfer is only called to set idle_sp */
747	if (flags == TRANSFER_SET_STACKLEVEL)	714	if (!next)
		715	{
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	716	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		717	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		718	}
749	else if (prev != next)	719	else if (prev != next)
750	{	720	{
751	coro_cctx *prev__cctx;	721	coro_cctx *prev__cctx;
752		722
		723	if (prev->flags & CF_NEW)
		724	{
		725	/* create a new empty context */
		726	Newz (0, prev->cctx, 1, coro_cctx);
		727	prev->cctx->inuse = 1;
		728	prev->flags &= ~CF_NEW;
		729	prev->flags \|= CF_RUNNING;
		730	}
		731
		732	/TODO: must not croak here /
		733	if (!prev->flags & CF_RUNNING)
		734	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		735
		736	if (next->flags & CF_RUNNING)
		737	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		738
		739	prev->flags &= ~CF_RUNNING;
		740	next->flags \|= CF_RUNNING;
		741
753	LOCK;	742	LOCK;
754		743
755	if (next->mainstack)	744	if (next->flags & CF_NEW)
756	{	745	{
757	/* coroutine already started */	746	/* need to start coroutine */
758	SAVE (prev, flags);	747	next->flags &= ~CF_NEW;
759	LOAD (next);	748	/* first get rid of the old state */
		749	save_perl (prev);
		750	/* setup coroutine call */
		751	setup_coro (next);
		752	/* need a new stack */
		753	assert (!next->cctx);
760	}	754	}
761	else	755	else
762	{	756	{
763	/* need to start coroutine */	757	/* coroutine already started */
764	/* first get rid of the old state */	758	save_perl (prev);
765	SAVE (prev, -1);	759	load_perl (next);
766	/* setup coroutine call */
767	setup_coro (next);
768	/* need a stack */
769	next->cctx = 0;
770	}	760	}
771
772	if (!prev->cctx)
773	/* create a new empty context */
774	Newz (0, prev->cctx, 1, coro_cctx);
775		761
776	prev__cctx = prev->cctx;	762	prev__cctx = prev->cctx;
777		763
778	/* possibly "free" the cctx */	764	/* possibly "free" the cctx */
779	if (prev__cctx->idle_sp == STACKLEVEL)	765	if (prev__cctx->idle_sp == STACKLEVEL)
780	{	766	{
		767	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		768	assert (PL_top_env == prev__cctx->top_env);
		769
		770	prev->cctx = 0;
		771
781	cctx_put (prev__cctx);	772	cctx_put (prev__cctx);
782	prev->cctx = 0;	773	prev__cctx->inuse = 0;
783	}	774	}
784		775
785	if (!next->cctx)	776	if (!next->cctx)
		777	{
786	next->cctx = cctx_get ();	778	next->cctx = cctx_get ();
		779	assert (!next->cctx->inuse);
		780	next->cctx->inuse = 1;
		781	}
787		782
788	if (prev__cctx != next->cctx)	783	if (prev__cctx != next->cctx)
789	{	784	{
790	prev__cctx->top_env = PL_top_env;	785	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	786	PL_top_env = next->cctx->top_env;
…		…
799	}	794	}
800		795
801	struct transfer_args	796	struct transfer_args
802	{	797	{
803	struct coro prev, next;	798	struct coro prev, next;
804	int flags;
805	};	799	};
806		800
807	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	801	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
808		802
809	static void	803	static void
810	coro_state_destroy (struct coro *coro)	804	coro_state_destroy (struct coro *coro)
811	{	805	{
812	if (coro->refcnt--)	806	if (coro->refcnt--)
813	return;	807	return;
814		808
815	if (coro->mainstack && coro->mainstack != main_mainstack)	809	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	810	{
817	struct coro temp;	811	struct coro temp;
		812	Zero (&temp, 1, struct coro);
		813	temp.save = CORO_SAVE_ALL;
818		814
819	SAVE ((&temp), TRANSFER_SAVE_ALL);	815	if (coro->flags & CF_RUNNING)
820	LOAD (coro);	816	croak ("FATAL: tried to destroy currently running coroutine");
		817
		818	save_perl (&temp);
		819	load_perl (coro);
821		820
822	coro_destroy_stacks ();	821	coro_destroy_stacks ();
823		822
824	LOAD ((&temp)); /* this will get rid of defsv etc.. */	823	load_perl (&temp); /* this will get rid of defsv etc.. */
825		824
826	coro->mainstack = 0;	825	coro->mainstack = 0;
827	}	826	}
828		827
829	cctx_free (coro->cctx);	828	cctx_destroy (coro->cctx);
830	SvREFCNT_dec (coro->args);	829	SvREFCNT_dec (coro->args);
831	Safefree (coro);	830	Safefree (coro);
832	}	831	}
833		832
834	static int	833	static int
…		…
884	assert (mg->mg_type == PERL_MAGIC_ext);	883	assert (mg->mg_type == PERL_MAGIC_ext);
885	return (struct coro *)mg->mg_ptr;	884	return (struct coro *)mg->mg_ptr;
886	}	885	}
887		886
888	static void	887	static void
889	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	888	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
890	{	889	{
891	ta->prev = SvSTATE (prev);	890	ta->prev = SvSTATE (prev_sv);
892	ta->next = SvSTATE (next);	891	ta->next = SvSTATE (next_sv);
893	ta->flags = flags;
894	}	892	}
895		893
896	static void	894	static void
897	api_transfer (SV prev, SV next, int flags)	895	api_transfer (SV prev_sv, SV next_sv)
898	{	896	{
899	dTHX;
900	struct transfer_args ta;	897	struct transfer_args ta;
901		898
902	prepare_transfer (&ta, prev, next, flags);	899	prepare_transfer (&ta, prev_sv, next_sv);
903	TRANSFER (ta);	900	TRANSFER (ta);
		901	}
		902
		903	static int
		904	api_save (SV *coro_sv, int new_save)
		905	{
		906	struct coro *coro = SvSTATE (coro_sv);
		907	int old_save = coro->save;
		908
		909	if (new_save >= 0)
		910	coro->save = new_save;
		911
		912	return old_save;
904	}	913	}
905		914
906	/ Coro ******************************************************************/	915	/ Coro ******************************************************************/
907		916
908	#define PRIO_MAX 3	917	#define PRIO_MAX 3
…		…
911	#define PRIO_LOW -1	920	#define PRIO_LOW -1
912	#define PRIO_IDLE -3	921	#define PRIO_IDLE -3
913	#define PRIO_MIN -4	922	#define PRIO_MIN -4
914		923
915	/* for Coro.pm */	924	/* for Coro.pm */
916	static GV coro_current, coro_idle;	925	static SV *coro_current;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	926	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;	927	static int coro_nready;
919		928
920	static void	929	static void
921	coro_enq (SV *sv)	930	coro_enq (SV *coro_sv)
922	{	931	{
923	int prio;
924
925	if (SvTYPE (sv) != SVt_PVHV)
926	croak ("Coro::ready tried to enqueue something that is not a coroutine");
927
928	prio = SvSTATE (sv)->prio;
929
930	av_push (coro_ready [prio - PRIO_MIN], sv);	932	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
931	coro_nready++;	933	coro_nready++;
932	}	934	}
933		935
934	static SV *	936	static SV *
935	coro_deq (int min_prio)	937	coro_deq (int min_prio)
…		…
948	}	950	}
949		951
950	return 0;	952	return 0;
951	}	953	}
952		954
953	static void	955	static int
954	api_ready (SV *coro)	956	api_ready (SV *coro_sv)
955	{	957	{
956	dTHX;	958	struct coro *coro;
957		959
958	if (SvROK (coro))	960	if (SvROK (coro_sv))
959	coro = SvRV (coro);	961	coro_sv = SvRV (coro_sv);
		962
		963	coro = SvSTATE (coro_sv);
		964
		965	if (coro->flags & CF_READY)
		966	return 0;
		967
		968	#if 0 /* this is actually harmless */
		969	if (coro->flags & CF_RUNNING)
		970	croak ("Coro::ready called on currently running coroutine");
		971	#endif
		972
		973	coro->flags \|= CF_READY;
960		974
961	LOCK;	975	LOCK;
962	coro_enq (SvREFCNT_inc (coro));	976	coro_enq (SvREFCNT_inc (coro_sv));
963	UNLOCK;	977	UNLOCK;
		978
		979	return 1;
		980	}
		981
		982	static int
		983	api_is_ready (SV *coro_sv)
		984	{
		985	return !!SvSTATE (coro_sv)->flags & CF_READY;
964	}	986	}
965		987
966	static void	988	static void
967	prepare_schedule (struct transfer_args *ta)	989	prepare_schedule (struct transfer_args *ta)
968	{	990	{
969	SV current, prev, *next;	991	SV prev, next;
970
971	current = GvSV (coro_current);
972		992
973	for (;;)	993	for (;;)
974	{	994	{
975	LOCK;	995	LOCK;
976	next = coro_deq (PRIO_MIN);	996	next = coro_deq (PRIO_MIN);
…		…
985	ENTER;	1005	ENTER;
986	SAVETMPS;	1006	SAVETMPS;
987		1007
988	PUSHMARK (SP);	1008	PUSHMARK (SP);
989	PUTBACK;	1009	PUTBACK;
990	call_sv (GvSV (coro_idle), G_DISCARD);	1010	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
991		1011
992	FREETMPS;	1012	FREETMPS;
993	LEAVE;	1013	LEAVE;
994	}	1014	}
995	}	1015	}
996		1016
997	prev = SvRV (current);	1017	prev = SvRV (coro_current);
998	SvRV (current) = next;	1018	SvRV_set (coro_current, next);
999		1019
1000	/* free this only after the transfer */	1020	/* free this only after the transfer */
1001	LOCK;	1021	LOCK;
1002	free_coro_mortal ();	1022	free_coro_mortal ();
1003	UNLOCK;	1023	UNLOCK;
1004	coro_mortal = prev;	1024	coro_mortal = prev;
1005		1025
		1026	assert (!SvROK(prev));//D
		1027	assert (!SvROK(next));//D
		1028
1006	ta->prev = SvSTATE (prev);	1029	ta->prev = SvSTATE (prev);
1007	ta->next = SvSTATE (next);	1030	ta->next = SvSTATE (next);
1008	ta->flags = TRANSFER_SAVE_ALL;	1031
		1032	assert (ta->next->flags & CF_READY);
		1033	ta->next->flags &= ~CF_READY;
1009	}	1034	}
1010		1035
1011	static void	1036	static void
1012	prepare_cede (struct transfer_args *ta)	1037	prepare_cede (struct transfer_args *ta)
1013	{	1038	{
1014	LOCK;	1039	api_ready (coro_current);
1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1016	UNLOCK;
1017		1040
1018	prepare_schedule (ta);	1041	prepare_schedule (ta);
1019	}	1042	}
1020		1043
1021	static void	1044	static void
1022	api_schedule (void)	1045	api_schedule (void)
1023	{	1046	{
1024	dTHX;
1025	struct transfer_args ta;	1047	struct transfer_args ta;
1026		1048
1027	prepare_schedule (&ta);	1049	prepare_schedule (&ta);
1028	TRANSFER (ta);	1050	TRANSFER (ta);
1029	}	1051	}
1030		1052
1031	static void	1053	static void
1032	api_cede (void)	1054	api_cede (void)
1033	{	1055	{
1034	dTHX;
1035	struct transfer_args ta;	1056	struct transfer_args ta;
1036		1057
1037	prepare_cede (&ta);	1058	prepare_cede (&ta);
1038	TRANSFER (ta);	1059	TRANSFER (ta);
1039	}	1060	}
…		…
1049	#endif	1070	#endif
1050	BOOT_PAGESIZE;	1071	BOOT_PAGESIZE;
1051		1072
1052	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1073	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1053		1074
1054	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1075	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1076	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1056	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1077	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1078	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1079	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1057		1080
1058	main_mainstack = PL_mainstack;	1081	main_mainstack = PL_mainstack;
1059		1082
1060	coroapi.ver = CORO_API_VERSION;	1083	coroapi.ver = CORO_API_VERSION;
1061	coroapi.transfer = api_transfer;	1084	coroapi.transfer = api_transfer;
…		…
1071	HV *hv;	1094	HV *hv;
1072	int i;	1095	int i;
1073		1096
1074	Newz (0, coro, 1, struct coro);	1097	Newz (0, coro, 1, struct coro);
1075	coro->args = newAV ();	1098	coro->args = newAV ();
		1099	coro->save = CORO_SAVE_ALL;
		1100	coro->flags = CF_NEW;
1076		1101
1077	hv = newHV ();	1102	hv = newHV ();
1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1103	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1079	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1104	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1080		1105
1081	for (i = 1; i < items; i++)	1106	for (i = 1; i < items; i++)
1082	av_push (coro->args, newSVsv (ST (i)));	1107	av_push (coro->args, newSVsv (ST (i)));
1083	}	1108	}
1084	OUTPUT:	1109	OUTPUT:
		1110	RETVAL
		1111
		1112	int
		1113	save (SV *coro, int new_save = -1)
		1114	CODE:
		1115	RETVAL = api_save (coro, new_save);
		1116	OUTPUT:
1085	RETVAL	1117	RETVAL
1086		1118
1087	void	1119	void
1088	_set_stacklevel (...)	1120	_set_stacklevel (...)
1089	ALIAS:	1121	ALIAS:
1090	Coro::State::transfer = 1	1122	Coro::State::transfer = 1
1091	Coro::schedule = 2	1123	Coro::schedule = 2
1092	Coro::cede = 3	1124	Coro::cede = 3
1093	Coro::Cont::yield = 4
1094	CODE:	1125	CODE:
1095	{	1126	{
1096	struct transfer_args ta;	1127	struct transfer_args ta;
1097		1128
1098	switch (ix)	1129	switch (ix)
1099	{	1130	{
1100	case 0:	1131	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1132	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1133	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1134	break;
1105		1135
1106	case 1:	1136	case 1:
1107	if (items != 3)	1137	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1138	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1139
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1140	prepare_transfer (&ta, ST (0), ST (1));
1111	break;	1141	break;
1112		1142
1113	case 2:	1143	case 2:
1114	prepare_schedule (&ta);	1144	prepare_schedule (&ta);
1115	break;	1145	break;
1116		1146
1117	case 3:	1147	case 3:
1118	prepare_cede (&ta);	1148	prepare_cede (&ta);
1119	break;	1149	break;
1120
1121	case 4:
1122	{
1123	SV *yieldstack;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;
1146
1147	}	1150	}
1148		1151
1149	TRANSFER (ta);	1152	TRANSFER (ta);
1150	}	1153	}
1151		1154
…		…
1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1198	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1199	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1200	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1201	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1199		1202
1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1203	coro_current = get_sv ("Coro::current", FALSE);
1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1204	SvREADONLY_on (coro_current);
1202		1205
1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1206	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1204	coro_ready[i] = newAV ();	1207	coro_ready[i] = newAV ();
1205		1208
1206	{	1209	{
1207	SV *sv = perl_get_sv("Coro::API", 1);	1210	SV *sv = perl_get_sv("Coro::API", 1);
1208		1211
1209	coroapi.schedule = api_schedule;	1212	coroapi.schedule = api_schedule;
		1213	coroapi.save = api_save;
1210	coroapi.cede = api_cede;	1214	coroapi.cede = api_cede;
1211	coroapi.ready = api_ready;	1215	coroapi.ready = api_ready;
		1216	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1217	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1218	coroapi.current = coro_current;
1214		1219
1215	GCoroAPI = &coroapi;	1220	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1221	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1222	SvREADONLY_on (sv);
1218	}	1223	}
1219	}	1224	}
		1225
		1226	void
		1227	_set_current (SV *current)
		1228	PROTOTYPE: $
		1229	CODE:
		1230	SvREFCNT_dec (SvRV (coro_current));
		1231	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1220		1232
1221	int	1233	int
1222	prio (Coro::State coro, int newprio = 0)	1234	prio (Coro::State coro, int newprio = 0)
1223	ALIAS:	1235	ALIAS:
1224	nice = 1	1236	nice = 1
…		…
1236		1248
1237	coro->prio = newprio;	1249	coro->prio = newprio;
1238	}	1250	}
1239	}	1251	}
1240		1252
1241	void	1253	SV *
1242	ready (SV *self)	1254	ready (SV *self)
1243	PROTOTYPE: $	1255	PROTOTYPE: $
1244	CODE:	1256	CODE:
1245	api_ready (self);	1257	RETVAL = boolSV (api_ready (self));
		1258	OUTPUT:
		1259	RETVAL
		1260
		1261	SV *
		1262	is_ready (SV *self)
		1263	PROTOTYPE: $
		1264	CODE:
		1265	RETVAL = boolSV (api_is_ready (self));
		1266	OUTPUT:
		1267	RETVAL
1246		1268
1247	int	1269	int
1248	nready (...)	1270	nready (...)
1249	PROTOTYPE:	1271	PROTOTYPE:
1250	CODE:	1272	CODE:
…		…
1256		1278
1257	SV *	1279	SV *
1258	_get_state ()	1280	_get_state ()
1259	CODE:	1281	CODE:
1260	{	1282	{
1261	struct {	1283	struct io_state *data;
1262	int errorno;
1263	int laststype;
1264	int laststatval;
1265	Stat_t statcache;
1266	} data;
1267		1284
		1285	RETVAL = newSV (sizeof (struct io_state));
		1286	data = (struct io_state *)SvPVX (RETVAL);
		1287	SvCUR_set (RETVAL, sizeof (struct io_state));
		1288	SvPOK_only (RETVAL);
		1289
1268	data.errorno = errno;	1290	data->errorno = errno;
1269	data.laststype = PL_laststype;	1291	data->laststype = PL_laststype;
1270	data.laststatval = PL_laststatval;	1292	data->laststatval = PL_laststatval;
1271	data.statcache = PL_statcache;	1293	data->statcache = PL_statcache;
1272
1273	RETVAL = newSVpvn ((char *)&data, sizeof data);
1274	}	1294	}
1275	OUTPUT:	1295	OUTPUT:
1276	RETVAL	1296	RETVAL
1277		1297
1278	void	1298	void
1279	_set_state (char *data_)	1299	_set_state (char *data_)
1280	PROTOTYPE: $	1300	PROTOTYPE: $
1281	CODE:	1301	CODE:
1282	{	1302	{
1283	struct {	1303	struct io_state data = (void )data_;
1284	int errorno;
1285	int laststype;
1286	int laststatval;
1287	Stat_t statcache;
1288	} data = (void )data_;
1289		1304
1290	errno = data->errorno;	1305	errno = data->errorno;
1291	PL_laststype = data->laststype;	1306	PL_laststype = data->laststype;
1292	PL_laststatval = data->laststatval;	1307	PL_laststatval = data->laststatval;
1293	PL_statcache = data->statcache;	1308	PL_statcache = data->statcache;
1294	}	1309	}
		1310

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Comparing Coro/Coro/State.xs (file contents): Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs. Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC