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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.168 by root, Thu Sep 27 16:10:48 2007 UTC vs.
Revision 1.251 by root, Thu Oct 30 09:44:31 2008 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
8		10
9	#include "patchlevel.h"	11	#include "patchlevel.h"
10		12
11	#include <stdio.h>	13	#include <stdio.h>
12	#include <errno.h>	14	#include <errno.h>
13	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
14		25
15	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
16	# include <unistd.h>	27	# include <unistd.h>
17	# include <sys/mman.h>	28	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
72	# endif	83	# endif
73	#endif	84	#endif
74		85
		86	/* 5.11 */
		87	#ifndef CxHASARGS
		88	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		89	#endif
		90
		91	/* 5.10.0 */
		92	#ifndef SvREFCNT_inc_NN
		93	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		94	#endif
		95
		96	/* 5.8.8 */
		97	#ifndef GV_NOTQUAL
		98	# define GV_NOTQUAL 0
		99	#endif
		100	#ifndef newSV
		101	# define newSV(l) NEWSV(0,l)
		102	#endif
		103
75	/* 5.8.7 */	104	/* 5.8.7 */
76	#ifndef SvRV_set	105	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	107	#endif
79		108
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		128
100	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		132	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	133	#else
104	# define attribute(x)	134	# define attribute(x)
105	# define BARRIER	135	# define BARRIER
		136	# define expect(expr,value) (expr)
106	#endif	137	#endif
		138
		139	#define expect_false(expr) expect ((expr) != 0, 0)
		140	#define expect_true(expr) expect ((expr) != 0, 1)
107		141
108	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
109		143
110	#include "CoroAPI.h"	144	#include "CoroAPI.h"
111		145
…		…
119	#endif	153	#endif
120		154
121	/* helper storage struct for Coro::AIO */	155	/* helper storage struct for Coro::AIO */
122	struct io_state	156	struct io_state
123	{	157	{
		158	AV *res;
124	int errorno;	159	int errorno;
125	I32 laststype;	160	I32 laststype;
126	int laststatval;	161	int laststatval;
127	Stat_t statcache;	162	Stat_t statcache;
128	};	163	};
129		164
		165	static double (*nvtime)(); /* so why doesn't it take void? */
		166
130	static size_t coro_stacksize = CORO_STACKSIZE;	167	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	168	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	169	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	170	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	171	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	172	static volatile SV *coro_mortal; /* will be freed after next transfer */
		173
		174	static GV *irsgv; /* $/ */
		175	static GV *stdoutgv; /* *STDOUT */
		176	static SV *rv_diehook;
		177	static SV *rv_warnhook;
		178	static HV *hv_sig; /* %SIG */
136		179
137	/* async_pool helper stuff */	180	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	181	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	182	static SV *sv_pool_size;
140	static AV *av_async_pool;	183	static AV *av_async_pool;
		184
		185	/* Coro::AnyEvent */
		186	static SV *sv_activity;
141		187
142	static struct coro_cctx *cctx_first;	188	static struct coro_cctx *cctx_first;
143	static int cctx_count, cctx_idle;	189	static int cctx_count, cctx_idle;
144		190
145	enum {	191	enum {
…		…
176	CF_READY = 0x0002, /* coroutine is ready */	222	CF_READY = 0x0002, /* coroutine is ready */
177	CF_NEW = 0x0004, /* has never been switched to */	223	CF_NEW = 0x0004, /* has never been switched to */
178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	224	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179	};	225	};
180		226
		227	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		228	typedef struct {
		229	SV *defsv;
		230	AV *defav;
		231	SV *errsv;
		232	SV *irsgv;
		233	#define VAR(name,type) type name;
		234	# include "state.h"
		235	#undef VAR
		236	} perl_slots;
		237
		238	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		239
181	/* this is a structure representing a perl-level coroutine */	240	/* this is a structure representing a perl-level coroutine */
182	struct coro {	241	struct coro {
183	/* the c coroutine allocated to this perl coroutine, if any */	242	/* the c coroutine allocated to this perl coroutine, if any */
184	coro_cctx *cctx;	243	coro_cctx *cctx;
185		244
		245	/* process data */
		246	AV *mainstack;
		247	perl_slots *slot; /* basically the saved sp */
		248
186	/* data associated with this coroutine (initial args) */	249	AV *args; /* data associated with this coroutine (initial args) */
187	AV *args;	250	int refcnt; /* coroutines are refcounted, yes */
188	int refcnt;
189	int save; /* CORO_SAVE flags */
190	int flags; /* CF_ flags */	251	int flags; /* CF_ flags */
		252	HV *hv; /* the perl hash associated with this coro, if any */
191		253
192	/* optionally saved, might be zero */	254	/* statistics */
193	AV *defav; /* @_ */	255	int usecount; /* number of transfers to this coro */
194	SV *defsv; /* $_ */
195	SV *errsv; /* $@ */
196	GV *deffh; /* default filehandle */
197	SV *irssv; /* $/ */
198	SV *irssv_sv; /* real $/ cache */
199
200	#define VAR(name,type) type name;
201	# include "state.h"
202	#undef VAR
203		256
204	/* coro process data */	257	/* coro process data */
205	int prio;	258	int prio;
		259	SV *throw; /* exception to be thrown */
		260
		261	/* async_pool */
		262	SV *saved_deffh;
206		263
207	/* linked list */	264	/* linked list */
208	struct coro *next, *prev;	265	struct coro *next, *prev;
209	HV *hv; /* the perl hash associated with this coro, if any */
210	};	266	};
211		267
212	typedef struct coro *Coro__State;	268	typedef struct coro *Coro__State;
213	typedef struct coro *Coro__State_or_hashref;	269	typedef struct coro *Coro__State_or_hashref;
214		270
…		…
221	#define PRIO_IDLE -3	277	#define PRIO_IDLE -3
222	#define PRIO_MIN -4	278	#define PRIO_MIN -4
223		279
224	/* for Coro.pm */	280	/* for Coro.pm */
225	static SV *coro_current;	281	static SV *coro_current;
		282	static SV *coro_readyhook;
226	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	283	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
227	static int coro_nready;	284	static int coro_nready;
228	static struct coro *coro_first;	285	static struct coro *coro_first;
229		286
230	/** lowlevel stuff **********************************************************/	287	/** lowlevel stuff **********************************************************/
231		288
		289	static SV *
		290	coro_get_sv (pTHX_ const char *name, int create)
		291	{
		292	#if PERL_VERSION_ATLEAST (5,10,0)
		293	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		294	get_sv (name, create);
		295	#endif
		296	return get_sv (name, create);
		297	}
		298
		299	static AV *
		300	coro_get_av (pTHX_ const char *name, int create)
		301	{
		302	#if PERL_VERSION_ATLEAST (5,10,0)
		303	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		304	get_av (name, create);
		305	#endif
		306	return get_av (name, create);
		307	}
		308
		309	static HV *
		310	coro_get_hv (pTHX_ const char *name, int create)
		311	{
		312	#if PERL_VERSION_ATLEAST (5,10,0)
		313	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		314	get_hv (name, create);
		315	#endif
		316	return get_hv (name, create);
		317	}
		318
232	static AV *	319	static AV *
233	coro_clone_padlist (pTHX_ CV *cv)	320	coro_clone_padlist (pTHX_ CV *cv)
234	{	321	{
235	AV *padlist = CvPADLIST (cv);	322	AV *padlist = CvPADLIST (cv);
236	AV *newpadlist, *newpad;	323	AV *newpadlist, *newpad;
237		324
238	newpadlist = newAV ();	325	newpadlist = newAV ();
239	AvREAL_off (newpadlist);	326	AvREAL_off (newpadlist);
240	#if PERL_VERSION_ATLEAST (5,9,0)	327	#if PERL_VERSION_ATLEAST (5,10,0)
241	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	328	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
242	#else	329	#else
243	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	330	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
244	#endif	331	#endif
245	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	332	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
246	--AvFILLp (padlist);	333	--AvFILLp (padlist);
247		334
248	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	335	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
249	av_store (newpadlist, 1, (SV *)newpad);	336	av_store (newpadlist, 1, (SV *)newpad);
250		337
251	return newpadlist;	338	return newpadlist;
252	}	339	}
253		340
…		…
283		370
284	/* casting is fun. */	371	/* casting is fun. */
285	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	372	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
286	free_padlist (aTHX_ padlist);	373	free_padlist (aTHX_ padlist);
287		374
288	SvREFCNT_dec (av);	375	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
289		376
290	return 0;	377	return 0;
291	}	378	}
292		379
293	#define PERL_MAGIC_coro PERL_MAGIC_ext	380	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		381	#define CORO_MAGIC_type_state PERL_MAGIC_ext
294		382
295	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	383	static MGVTBL coro_cv_vtbl = {
		384	0, 0, 0, 0,
		385	coro_cv_free
		386	};
296		387
297	#define CORO_MAGIC(cv) \	388	#define CORO_MAGIC(sv,type) \
298	SvMAGIC (cv) \	389	SvMAGIC (sv) \
299	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	390	? SvMAGIC (sv)->mg_type == type \
300	? SvMAGIC (cv) \	391	? SvMAGIC (sv) \
301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	392	: mg_find (sv, type) \
302	: 0	393	: 0
		394
		395	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		396	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		397
		398	static struct coro *
		399	SvSTATE_ (pTHX_ SV *coro)
		400	{
		401	HV *stash;
		402	MAGIC *mg;
		403
		404	if (SvROK (coro))
		405	coro = SvRV (coro);
		406
		407	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		408	croak ("Coro::State object required");
		409
		410	stash = SvSTASH (coro);
		411	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		412	{
		413	/* very slow, but rare, check */
		414	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		415	croak ("Coro::State object required");
		416	}
		417
		418	mg = CORO_MAGIC_state (coro);
		419	return (struct coro *)mg->mg_ptr;
		420	}
		421
		422	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
303		423
304	/* the next two functions merely cache the padlists */	424	/* the next two functions merely cache the padlists */
305	static void	425	static void
306	get_padlist (pTHX_ CV *cv)	426	get_padlist (pTHX_ CV *cv)
307	{	427	{
308	MAGIC *mg = CORO_MAGIC (cv);	428	MAGIC *mg = CORO_MAGIC_cv (cv);
309	AV *av;	429	AV *av;
310		430
311	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	431	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
312	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	432	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
313	else	433	else
314	{	434	{
315	#if CORO_PREFER_PERL_FUNCTIONS	435	#if CORO_PREFER_PERL_FUNCTIONS
316	/* this is probably cleaner, but also slower? */	436	/* this is probably cleaner? but also slower! */
		437	/* in practise, it seems to be less stable */
317	CV *cp = Perl_cv_clone (cv);	438	CV *cp = Perl_cv_clone (cv);
318	CvPADLIST (cv) = CvPADLIST (cp);	439	CvPADLIST (cv) = CvPADLIST (cp);
319	CvPADLIST (cp) = 0;	440	CvPADLIST (cp) = 0;
320	SvREFCNT_dec (cp);	441	SvREFCNT_dec (cp);
321	#else	442	#else
…		…
325	}	446	}
326		447
327	static void	448	static void
328	put_padlist (pTHX_ CV *cv)	449	put_padlist (pTHX_ CV *cv)
329	{	450	{
330	MAGIC *mg = CORO_MAGIC (cv);	451	MAGIC *mg = CORO_MAGIC_cv (cv);
331	AV *av;	452	AV *av;
332		453
333	if (!mg)	454	if (expect_false (!mg))
334	{	455	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
335	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
336	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
337	mg->mg_virtual = &vtbl_coro;
338	mg->mg_obj = (SV *)newAV ();
339	}
340		456
341	av = (AV *)mg->mg_obj;	457	av = (AV *)mg->mg_obj;
342		458
343	if (AvFILLp (av) >= AvMAX (av))	459	if (expect_false (AvFILLp (av) >= AvMAX (av)))
344	av_extend (av, AvMAX (av) + 1);	460	av_extend (av, AvMAX (av) + 1);
345		461
346	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	462	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
347	}	463	}
348		464
349	/** load & save, init *******************************************************/	465	/** load & save, init *******************************************************/
350
351	#define SB do {
352	#define SE } while (0)
353
354	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
355		466
356	static void	467	static void
357	load_perl (pTHX_ Coro__State c)	468	load_perl (pTHX_ Coro__State c)
358	{	469	{
		470	perl_slots *slot = c->slot;
		471	c->slot = 0;
		472
		473	PL_mainstack = c->mainstack;
		474
		475	GvSV (PL_defgv) = slot->defsv;
		476	GvAV (PL_defgv) = slot->defav;
		477	GvSV (PL_errgv) = slot->errsv;
		478	GvSV (irsgv) = slot->irsgv;
		479
359	#define VAR(name,type) PL_ ## name = c->name;	480	#define VAR(name,type) PL_ ## name = slot->name;
360	# include "state.h"	481	# include "state.h"
361	#undef VAR	482	#undef VAR
362
363	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
364	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
365	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
366	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
367
368	if (c->irssv)
369	{
370	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
371	{
372	SvREFCNT_dec (c->irssv);
373	c->irssv = 0;
374	}
375	else
376	{
377	REPLACE_SV (PL_rs, c->irssv);
378	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
379	sv_setsv (c->irssv_sv, PL_rs);
380	}
381	}
382		483
383	{	484	{
384	dSP;	485	dSP;
		486
385	CV *cv;	487	CV *cv;
386		488
387	/* now do the ugly restore mess */	489	/* now do the ugly restore mess */
388	while ((cv = (CV *)POPs))	490	while (expect_true (cv = (CV *)POPs))
389	{	491	{
390	put_padlist (aTHX_ cv); /* mark this padlist as available */	492	put_padlist (aTHX_ cv); /* mark this padlist as available */
391	CvDEPTH (cv) = PTR2IV (POPs);	493	CvDEPTH (cv) = PTR2IV (POPs);
392	CvPADLIST (cv) = (AV *)POPs;	494	CvPADLIST (cv) = (AV *)POPs;
393	}	495	}
…		…
412		514
413	XPUSHs (Nullsv);	515	XPUSHs (Nullsv);
414	/* this loop was inspired by pp_caller */	516	/* this loop was inspired by pp_caller */
415	for (;;)	517	for (;;)
416	{	518	{
417	while (cxix >= 0)	519	while (expect_true (cxix >= 0))
418	{	520	{
419	PERL_CONTEXT *cx = &ccstk[cxix--];	521	PERL_CONTEXT *cx = &ccstk[cxix--];
420		522
421	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	523	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
422	{	524	{
423	CV *cv = cx->blk_sub.cv;	525	CV *cv = cx->blk_sub.cv;
424		526
425	if (CvDEPTH (cv))	527	if (expect_true (CvDEPTH (cv)))
426	{	528	{
427	EXTEND (SP, 3);	529	EXTEND (SP, 3);
428	PUSHs ((SV *)CvPADLIST (cv));	530	PUSHs ((SV *)CvPADLIST (cv));
429	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	531	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
430	PUSHs ((SV *)cv);	532	PUSHs ((SV *)cv);
431		533
432	CvDEPTH (cv) = 0;	534	CvDEPTH (cv) = 0;
433	get_padlist (aTHX_ cv);	535	get_padlist (aTHX_ cv);
434	}	536	}
435	}	537	}
436	}	538	}
437		539
438	if (top_si->si_type == PERLSI_MAIN)	540	if (expect_true (top_si->si_type == PERLSI_MAIN))
439	break;	541	break;
440		542
441	top_si = top_si->si_prev;	543	top_si = top_si->si_prev;
442	ccstk = top_si->si_cxstack;	544	ccstk = top_si->si_cxstack;
443	cxix = top_si->si_cxix;	545	cxix = top_si->si_cxix;
444	}	546	}
445		547
446	PUTBACK;	548	PUTBACK;
447	}	549	}
448		550
449	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	551	/* allocate some space on the context stack for our purposes */
450	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	552	/* we manually unroll here, as usually 2 slots is enough */
451	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	553	if (SLOT_COUNT >= 1) CXINC;
452	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	554	if (SLOT_COUNT >= 2) CXINC;
453	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	555	if (SLOT_COUNT >= 3) CXINC;
		556	{
		557	int i;
		558	for (i = 3; i < SLOT_COUNT; ++i)
		559	CXINC;
		560	}
		561	cxstack_ix -= SLOT_COUNT; /* undo allocation */
454		562
		563	c->mainstack = PL_mainstack;
		564
		565	{
		566	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		567
		568	slot->defav = GvAV (PL_defgv);
		569	slot->defsv = DEFSV;
		570	slot->errsv = ERRSV;
		571	slot->irsgv = GvSV (irsgv);
		572
455	#define VAR(name,type)c->name = PL_ ## name;	573	#define VAR(name,type) slot->name = PL_ ## name;
456	# include "state.h"	574	# include "state.h"
457	#undef VAR	575	#undef VAR
		576	}
458	}	577	}
459		578
460	/*	579	/*
461	* allocate various perl stacks. This is an exact copy	580	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	581	* of perl.c:init_stacks, except that it uses less memory
…		…
467	# define coro_init_stacks init_stacks	586	# define coro_init_stacks init_stacks
468	#else	587	#else
469	static void	588	static void
470	coro_init_stacks (pTHX)	589	coro_init_stacks (pTHX)
471	{	590	{
472	PL_curstackinfo = new_stackinfo(64, 6);	591	PL_curstackinfo = new_stackinfo(32, 8);
473	PL_curstackinfo->si_type = PERLSI_MAIN;	592	PL_curstackinfo->si_type = PERLSI_MAIN;
474	PL_curstack = PL_curstackinfo->si_stack;	593	PL_curstack = PL_curstackinfo->si_stack;
475	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	594	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
476		595
477	PL_stack_base = AvARRAY(PL_curstack);	596	PL_stack_base = AvARRAY(PL_curstack);
478	PL_stack_sp = PL_stack_base;	597	PL_stack_sp = PL_stack_base;
479	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	598	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
480		599
481	New(50,PL_tmps_stack,64,SV*);	600	New(50,PL_tmps_stack,32,SV*);
482	PL_tmps_floor = -1;	601	PL_tmps_floor = -1;
483	PL_tmps_ix = -1;	602	PL_tmps_ix = -1;
484	PL_tmps_max = 64;	603	PL_tmps_max = 32;
485		604
486	New(54,PL_markstack,16,I32);	605	New(54,PL_markstack,16,I32);
487	PL_markstack_ptr = PL_markstack;	606	PL_markstack_ptr = PL_markstack;
488	PL_markstack_max = PL_markstack + 16;	607	PL_markstack_max = PL_markstack + 16;
489		608
490	#ifdef SET_MARK_OFFSET	609	#ifdef SET_MARK_OFFSET
491	SET_MARK_OFFSET;	610	SET_MARK_OFFSET;
492	#endif	611	#endif
493		612
494	New(54,PL_scopestack,16,I32);	613	New(54,PL_scopestack,8,I32);
495	PL_scopestack_ix = 0;	614	PL_scopestack_ix = 0;
496	PL_scopestack_max = 16;	615	PL_scopestack_max = 8;
497		616
498	New(54,PL_savestack,64,ANY);	617	New(54,PL_savestack,24,ANY);
499	PL_savestack_ix = 0;	618	PL_savestack_ix = 0;
500	PL_savestack_max = 64;	619	PL_savestack_max = 24;
501		620
502	#if !PERL_VERSION_ATLEAST (5,9,0)	621	#if !PERL_VERSION_ATLEAST (5,10,0)
503	New(54,PL_retstack,4,OP*);	622	New(54,PL_retstack,4,OP*);
504	PL_retstack_ix = 0;	623	PL_retstack_ix = 0;
505	PL_retstack_max = 4;	624	PL_retstack_max = 4;
506	#endif	625	#endif
507	}	626	}
…		…
511	* destroy the stacks, the callchain etc...	630	* destroy the stacks, the callchain etc...
512	*/	631	*/
513	static void	632	static void
514	coro_destroy_stacks (pTHX)	633	coro_destroy_stacks (pTHX)
515	{	634	{
516	if (!IN_DESTRUCT)
517	{
518	/* restore all saved variables and stuff */
519	LEAVE_SCOPE (0);
520	assert (PL_tmps_floor == -1);
521
522	/* free all temporaries */
523	FREETMPS;
524	assert (PL_tmps_ix == -1);
525
526	/* unwind all extra stacks */
527	POPSTACK_TO (PL_mainstack);
528
529	/* unwind main stack */
530	dounwind (-1);
531	}
532
533	while (PL_curstackinfo->si_next)	635	while (PL_curstackinfo->si_next)
534	PL_curstackinfo = PL_curstackinfo->si_next;	636	PL_curstackinfo = PL_curstackinfo->si_next;
535		637
536	while (PL_curstackinfo)	638	while (PL_curstackinfo)
537	{	639	{
…		…
547		649
548	Safefree (PL_tmps_stack);	650	Safefree (PL_tmps_stack);
549	Safefree (PL_markstack);	651	Safefree (PL_markstack);
550	Safefree (PL_scopestack);	652	Safefree (PL_scopestack);
551	Safefree (PL_savestack);	653	Safefree (PL_savestack);
552	#if !PERL_VERSION_ATLEAST (5,9,0)	654	#if !PERL_VERSION_ATLEAST (5,10,0)
553	Safefree (PL_retstack);	655	Safefree (PL_retstack);
554	#endif	656	#endif
555	}	657	}
556		658
557	static size_t	659	static size_t
558	coro_rss (struct coro *coro)	660	coro_rss (pTHX_ struct coro *coro)
559	{	661	{
560	size_t rss = sizeof (coro);	662	size_t rss = sizeof (*coro);
561		663
562	if (coro->mainstack)	664	if (coro->mainstack)
563	{	665	{
		666	perl_slots tmp_slot;
		667	perl_slots *slot;
		668
564	if (coro->flags & CF_RUNNING)	669	if (coro->flags & CF_RUNNING)
565	{	670	{
		671	slot = &tmp_slot;
		672
566	#define VAR(name,type)coro->name = PL_ ## name;	673	#define VAR(name,type) slot->name = PL_ ## name;
567	# include "state.h"	674	# include "state.h"
568	#undef VAR	675	#undef VAR
569	}	676	}
		677	else
		678	slot = coro->slot;
570		679
		680	if (slot)
		681	{
571	rss += sizeof (coro->curstackinfo);	682	rss += sizeof (slot->curstackinfo);
572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	683	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	684	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
575	rss += coro->tmps_max * sizeof (SV *);	685	rss += slot->tmps_max * sizeof (SV *);
576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	686	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
577	rss += coro->scopestack_max * sizeof (I32);	687	rss += slot->scopestack_max * sizeof (I32);
578	rss += coro->savestack_max * sizeof (ANY);	688	rss += slot->savestack_max * sizeof (ANY);
579		689
580	#if !PERL_VERSION_ATLEAST (5,9,0)	690	#if !PERL_VERSION_ATLEAST (5,10,0)
581	rss += coro->retstack_max * sizeof (OP *);	691	rss += slot->retstack_max * sizeof (OP *);
582	#endif	692	#endif
		693	}
583	}	694	}
584		695
585	return rss;	696	return rss;
586	}	697	}
587		698
588	/** coroutine stack handling ************************************************/	699	/** coroutine stack handling ************************************************/
589		700
		701	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		702	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		703	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		704
		705	/* apparently < 5.8.8 */
		706	#ifndef MgPV_nolen_const
		707	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		708	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		709	(const char*)(mg)->mg_ptr)
		710	#endif
		711
		712	/*
		713	* This overrides the default magic get method of %SIG elements.
		714	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		715	* and instead of tryign to save and restore the hash elements, we just provide
		716	* readback here.
		717	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		718	* not expecting this to actually change the hook. This is a potential problem
		719	* when a schedule happens then, but we ignore this.
		720	*/
		721	static int
		722	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		723	{
		724	const char *s = MgPV_nolen_const (mg);
		725
		726	if (*s == '_')
		727	{
		728	SV **svp = 0;
		729
		730	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		731	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		732
		733	if (svp)
		734	{
		735	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		736	return 0;
		737	}
		738	}
		739
		740	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		741	}
		742
		743	static int
		744	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		745	{
		746	const char *s = MgPV_nolen_const (mg);
		747
		748	if (*s == '_')
		749	{
		750	SV **svp = 0;
		751
		752	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		753	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		754
		755	if (svp)
		756	{
		757	SV *old = *svp;
		758	*svp = 0;
		759	SvREFCNT_dec (old);
		760	return 0;
		761	}
		762	}
		763
		764	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		765	}
		766
		767	static int
		768	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		769	{
		770	const char *s = MgPV_nolen_const (mg);
		771
		772	if (*s == '_')
		773	{
		774	SV **svp = 0;
		775
		776	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		777	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		778
		779	if (svp)
		780	{
		781	SV *old = *svp;
		782	*svp = newSVsv (sv);
		783	SvREFCNT_dec (old);
		784	return 0;
		785	}
		786	}
		787
		788	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		789	}
		790
590	static void	791	static void
591	setup_coro (pTHX_ struct coro *coro)	792	coro_setup (pTHX_ struct coro *coro)
592	{	793	{
593	/*	794	/*
594	* emulate part of the perl startup here.	795	* emulate part of the perl startup here.
595	*/	796	*/
596	coro_init_stacks (aTHX);	797	coro_init_stacks (aTHX);
597		798
		799	PL_runops = RUNOPS_DEFAULT;
598	PL_curcop = &PL_compiling;	800	PL_curcop = &PL_compiling;
599	PL_in_eval = EVAL_NULL;	801	PL_in_eval = EVAL_NULL;
600	PL_comppad = 0;	802	PL_comppad = 0;
601	PL_curpm = 0;	803	PL_curpm = 0;
		804	PL_curpad = 0;
602	PL_localizing = 0;	805	PL_localizing = 0;
603	PL_dirty = 0;	806	PL_dirty = 0;
604	PL_restartop = 0;	807	PL_restartop = 0;
		808	#if PERL_VERSION_ATLEAST (5,10,0)
		809	PL_parser = 0;
		810	#endif
		811
		812	/* recreate the die/warn hooks */
		813	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		814	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		815
		816	GvSV (PL_defgv) = newSV (0);
		817	GvAV (PL_defgv) = coro->args; coro->args = 0;
		818	GvSV (PL_errgv) = newSV (0);
		819	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		820	PL_rs = newSVsv (GvSV (irsgv));
		821	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
605		822
606	{	823	{
607	dSP;	824	dSP;
608	LOGOP myop;	825	LOGOP myop;
609		826
610	SvREFCNT_dec (GvAV (PL_defgv));
611	GvAV (PL_defgv) = coro->args; coro->args = 0;
612
613	Zero (&myop, 1, LOGOP);	827	Zero (&myop, 1, LOGOP);
614	myop.op_next = Nullop;	828	myop.op_next = Nullop;
615	myop.op_flags = OPf_WANT_VOID;	829	myop.op_flags = OPf_WANT_VOID;
616		830
617	PUSHMARK (SP);	831	PUSHMARK (SP);
618	XPUSHs (av_shift (GvAV (PL_defgv)));	832	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
619	PUTBACK;	833	PUTBACK;
620	PL_op = (OP *)&myop;	834	PL_op = (OP *)&myop;
621	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	835	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
622	SPAGAIN;	836	SPAGAIN;
623	}	837	}
624		838
625	ENTER; /* necessary e.g. for dounwind */	839	/* this newly created coroutine might be run on an existing cctx which most
		840	* likely was suspended in set_stacklevel, called from entersub.
		841	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		842	* so we ENTER here for symmetry
		843	*/
		844	ENTER;
		845	}
		846
		847	static void
		848	coro_destroy (pTHX_ struct coro *coro)
		849	{
		850	if (!IN_DESTRUCT)
		851	{
		852	/* restore all saved variables and stuff */
		853	LEAVE_SCOPE (0);
		854	assert (PL_tmps_floor == -1);
		855
		856	/* free all temporaries */
		857	FREETMPS;
		858	assert (PL_tmps_ix == -1);
		859
		860	/* unwind all extra stacks */
		861	POPSTACK_TO (PL_mainstack);
		862
		863	/* unwind main stack */
		864	dounwind (-1);
		865	}
		866
		867	SvREFCNT_dec (GvSV (PL_defgv));
		868	SvREFCNT_dec (GvAV (PL_defgv));
		869	SvREFCNT_dec (GvSV (PL_errgv));
		870	SvREFCNT_dec (PL_defoutgv);
		871	SvREFCNT_dec (PL_rs);
		872	SvREFCNT_dec (GvSV (irsgv));
		873
		874	SvREFCNT_dec (PL_diehook);
		875	SvREFCNT_dec (PL_warnhook);
		876
		877	SvREFCNT_dec (coro->saved_deffh);
		878	SvREFCNT_dec (coro->throw);
		879
		880	coro_destroy_stacks (aTHX);
626	}	881	}
627		882
628	static void	883	static void
629	free_coro_mortal (pTHX)	884	free_coro_mortal (pTHX)
630	{	885	{
631	if (coro_mortal)	886	if (expect_true (coro_mortal))
632	{	887	{
633	SvREFCNT_dec (coro_mortal);	888	SvREFCNT_dec (coro_mortal);
634	coro_mortal = 0;	889	coro_mortal = 0;
635	}	890	}
636	}	891	}
637		892
638	static int	893	static int
639	runops_coro (pTHX)	894	runops_trace (pTHX)
640	{	895	{
641	COP *oldcop = 0;	896	COP *oldcop = 0;
642	int oldcxix = -2;	897	int oldcxix = -2;
		898	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		899	coro_cctx *cctx = coro->cctx;
643		900
644	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	901	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
645	{	902	{
646	PERL_ASYNC_CHECK ();	903	PERL_ASYNC_CHECK ();
647		904
648	if (PL_op->op_type == OP_LEAVESUB)	905	if (cctx->flags & CC_TRACE_ALL)
649	{	906	{
650	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	907	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
651	SV **bot, **top;
652	AV *av = newAV (); /* return values */
653	runops_proc_t old_runops = PL_runops;
654	dSP;
655	ENTER;
656	SAVETMPS;
657	EXTEND (SP, 3);
658	PL_runops = RUNOPS_DEFAULT;
659
660	GV *gv = CvGV (cx->blk_sub.cv);
661	SV *fullname = sv_2mortal (newSV (0));
662	if (isGV (gv))
663	gv_efullname3 (fullname, gv, 0);
664
665	bot = PL_stack_base + cx->blk_oldsp + 1;
666	top = cx->blk_gimme == G_ARRAY ? SP + 1
667	: cx->blk_gimme == G_SCALAR ? bot + 1
668	: bot;
669
670	while (bot < top)
671	av_push (av, SvREFCNT_inc (*bot++));
672
673	PUSHMARK (SP);
674	PUSHs (&PL_sv_no);
675	PUSHs (fullname);
676	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
677	PUTBACK;
678	call_pv ("Coro::_do_trace_sub", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
679	SPAGAIN;
680
681	FREETMPS;
682	LEAVE;
683	PL_runops = old_runops;
684	}
685
686	if (oldcop != PL_curcop)
687	{
688	oldcop = PL_curcop;
689
690	if (PL_curcop != &PL_compiling)
691	{	908	{
692	runops_proc_t old_runops = PL_runops;	909	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		910	SV **bot, **top;
		911	AV *av = newAV (); /* return values */
		912	SV **cb;
693	dSP;	913	dSP;
		914
		915	GV *gv = CvGV (cx->blk_sub.cv);
		916	SV *fullname = sv_2mortal (newSV (0));
		917	if (isGV (gv))
		918	gv_efullname3 (fullname, gv, 0);
		919
		920	bot = PL_stack_base + cx->blk_oldsp + 1;
		921	top = cx->blk_gimme == G_ARRAY ? SP + 1
		922	: cx->blk_gimme == G_SCALAR ? bot + 1
		923	: bot;
		924
		925	av_extend (av, top - bot);
		926	while (bot < top)
		927	av_push (av, SvREFCNT_inc_NN (*bot++));
		928
		929	PL_runops = RUNOPS_DEFAULT;
694	ENTER;	930	ENTER;
695	SAVETMPS;	931	SAVETMPS;
696	EXTEND (SP, 3);	932	EXTEND (SP, 3);
697	PL_runops = RUNOPS_DEFAULT;
698
699	if (oldcxix != cxstack_ix)
700	{
701	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
702
703	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
704	{
705	GV *gv = CvGV (cx->blk_sub.cv);
706	SV *fullname = sv_2mortal (newSV (0));
707	if (isGV (gv))
708	gv_efullname3 (fullname, gv, 0);
709
710	PUSHMARK (SP);
711	PUSHs (&PL_sv_yes);
712	PUSHs (fullname);
713	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
714	PUTBACK;
715	call_pv ("Coro::_do_trace_sub", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
716	SPAGAIN;
717	}
718
719	oldcxix = cxstack_ix;
720	}
721
722	if (0) {
723	PUSHMARK (SP);	933	PUSHMARK (SP);
724	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	934	PUSHs (&PL_sv_no);
725	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	935	PUSHs (fullname);
		936	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
726	PUTBACK;	937	PUTBACK;
		938	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
727	call_pv ("Coro::_do_trace_line", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	939	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
728	SPAGAIN;	940	SPAGAIN;
729	}
730
731	FREETMPS;	941	FREETMPS;
732	LEAVE;	942	LEAVE;
733	PL_runops = old_runops;	943	PL_runops = runops_trace;
		944	}
		945
		946	if (oldcop != PL_curcop)
		947	{
		948	oldcop = PL_curcop;
		949
		950	if (PL_curcop != &PL_compiling)
		951	{
		952	SV **cb;
		953
		954	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		955	{
		956	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		957
		958	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		959	{
		960	runops_proc_t old_runops = PL_runops;
		961	dSP;
		962	GV *gv = CvGV (cx->blk_sub.cv);
		963	SV *fullname = sv_2mortal (newSV (0));
		964
		965	if (isGV (gv))
		966	gv_efullname3 (fullname, gv, 0);
		967
		968	PL_runops = RUNOPS_DEFAULT;
		969	ENTER;
		970	SAVETMPS;
		971	EXTEND (SP, 3);
		972	PUSHMARK (SP);
		973	PUSHs (&PL_sv_yes);
		974	PUSHs (fullname);
		975	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		976	PUTBACK;
		977	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		978	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		979	SPAGAIN;
		980	FREETMPS;
		981	LEAVE;
		982	PL_runops = runops_trace;
		983	}
		984
		985	oldcxix = cxstack_ix;
		986	}
		987
		988	if (cctx->flags & CC_TRACE_LINE)
		989	{
		990	dSP;
		991
		992	PL_runops = RUNOPS_DEFAULT;
		993	ENTER;
		994	SAVETMPS;
		995	EXTEND (SP, 3);
		996	PL_runops = RUNOPS_DEFAULT;
		997	PUSHMARK (SP);
		998	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		999	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		1000	PUTBACK;
		1001	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		1002	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1003	SPAGAIN;
		1004	FREETMPS;
		1005	LEAVE;
		1006	PL_runops = runops_trace;
		1007	}
		1008	}
734	}	1009	}
735	}	1010	}
736	}	1011	}
737		1012
738	TAINT_NOT;	1013	TAINT_NOT;
…		…
741		1016
742	/* inject a fake call to Coro::State::_cctx_init into the execution */	1017	/* inject a fake call to Coro::State::_cctx_init into the execution */
743	/* _cctx_init should be careful, as it could be called at almost any time */	1018	/* _cctx_init should be careful, as it could be called at almost any time */
744	/* during execution of a perl program */	1019	/* during execution of a perl program */
745	static void NOINLINE	1020	static void NOINLINE
746	prepare_cctx (pTHX_ coro_cctx *cctx)	1021	cctx_prepare (pTHX_ coro_cctx *cctx)
747	{	1022	{
748	dSP;	1023	dSP;
749	LOGOP myop;	1024	LOGOP myop;
750		1025
751	PL_top_env = &PL_start_env;	1026	PL_top_env = &PL_start_env;
752		1027
753	if (cctx->flags & CC_TRACE)	1028	if (cctx->flags & CC_TRACE)
754	PL_runops = runops_coro;	1029	PL_runops = runops_trace;
755		1030
756	Zero (&myop, 1, LOGOP);	1031	Zero (&myop, 1, LOGOP);
757	myop.op_next = PL_op;	1032	myop.op_next = PL_op;
758	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1033	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
759		1034
…		…
769		1044
770	/*	1045	/*
771	* this is a _very_ stripped down perl interpreter ;)	1046	* this is a _very_ stripped down perl interpreter ;)
772	*/	1047	*/
773	static void	1048	static void
774	coro_run (void *arg)	1049	cctx_run (void *arg)
775	{	1050	{
776	dTHX;	1051	dTHX;
777		1052
778	/* coro_run is the alternative tail of transfer(), so unlock here. */	1053	/* cctx_run is the alternative tail of transfer(), so unlock here. */
779	UNLOCK;	1054	UNLOCK;
780		1055
781	/* we now skip the entersub that lead to transfer() */	1056	/* we now skip the entersub that lead to transfer() */
782	PL_op = PL_op->op_next;	1057	PL_op = PL_op->op_next;
783		1058
784	/* inject a fake subroutine call to cctx_init */	1059	/* inject a fake subroutine call to cctx_init */
785	prepare_cctx (aTHX_ (coro_cctx *)arg);	1060	cctx_prepare (aTHX_ (coro_cctx *)arg);
786		1061
787	/* somebody or something will hit me for both perl_run and PL_restartop */	1062	/* somebody or something will hit me for both perl_run and PL_restartop */
788	PL_restartop = PL_op;	1063	PL_restartop = PL_op;
789	perl_run (PL_curinterp);	1064	perl_run (PL_curinterp);
790		1065
…		…
809	++cctx_count;	1084	++cctx_count;
810		1085
811	Newz (0, cctx, 1, coro_cctx);	1086	Newz (0, cctx, 1, coro_cctx);
812		1087
813	#if HAVE_MMAP	1088	#if HAVE_MMAP
814
815	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1089	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
816	/* mmap supposedly does allocate-on-write for us */	1090	/* mmap supposedly does allocate-on-write for us */
817	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1091	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
818		1092
819	if (cctx->sptr != (void *)-1)	1093	if (cctx->sptr != (void *)-1)
…		…
840	stack_start = cctx->sptr;	1114	stack_start = cctx->sptr;
841	stack_size = cctx->ssize;	1115	stack_size = cctx->ssize;
842	}	1116	}
843		1117
844	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1118	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
845	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1119	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
846		1120
847	return cctx;	1121	return cctx;
848	}	1122	}
849		1123
850	static void	1124	static void
…		…
867	Safefree (cctx->sptr);	1141	Safefree (cctx->sptr);
868		1142
869	Safefree (cctx);	1143	Safefree (cctx);
870	}	1144	}
871		1145
		1146	/* wether this cctx should be destructed */
		1147	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1148
872	static coro_cctx *	1149	static coro_cctx *
873	cctx_get (pTHX)	1150	cctx_get (pTHX)
874	{	1151	{
875	while (cctx_first)	1152	while (expect_true (cctx_first))
876	{	1153	{
877	coro_cctx *cctx = cctx_first;	1154	coro_cctx *cctx = cctx_first;
878	cctx_first = cctx->next;	1155	cctx_first = cctx->next;
879	--cctx_idle;	1156	--cctx_idle;
880		1157
881	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1158	if (expect_true (!CCTX_EXPIRED (cctx)))
882	return cctx;	1159	return cctx;
883		1160
884	cctx_destroy (cctx);	1161	cctx_destroy (cctx);
885	}	1162	}
886		1163
…		…
889		1166
890	static void	1167	static void
891	cctx_put (coro_cctx *cctx)	1168	cctx_put (coro_cctx *cctx)
892	{	1169	{
893	/* free another cctx if overlimit */	1170	/* free another cctx if overlimit */
894	if (cctx_idle >= MAX_IDLE_CCTX)	1171	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
895	{	1172	{
896	coro_cctx *first = cctx_first;	1173	coro_cctx *first = cctx_first;
897	cctx_first = first->next;	1174	cctx_first = first->next;
898	--cctx_idle;	1175	--cctx_idle;
899		1176
…		…
905	cctx_first = cctx;	1182	cctx_first = cctx;
906	}	1183	}
907		1184
908	/** coroutine switching *****************************************************/	1185	/** coroutine switching *****************************************************/
909		1186
910	/* never call directly, always through the coro_state_transfer global variable */	1187	static void
		1188	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1189	{
		1190	if (expect_true (prev != next))
		1191	{
		1192	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1193	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1194
		1195	if (expect_false (next->flags & CF_RUNNING))
		1196	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1197
		1198	if (expect_false (next->flags & CF_DESTROYED))
		1199	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1200
		1201	#if !PERL_VERSION_ATLEAST (5,10,0)
		1202	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1203	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1204	#endif
		1205	}
		1206	}
		1207
		1208	/* always use the TRANSFER macro */
911	static void NOINLINE	1209	static void NOINLINE
912	transfer (pTHX_ struct coro *prev, struct coro *next)	1210	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
913	{	1211	{
914	dSTACKLEVEL;	1212	dSTACKLEVEL;
		1213	static volatile int has_throw;
915		1214
916	/* sometimes transfer is only called to set idle_sp */	1215	/* sometimes transfer is only called to set idle_sp */
917	if (!next)	1216	if (expect_false (!next))
918	{	1217	{
919	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1218	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
920	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1219	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
921	}	1220	}
922	else if (prev != next)	1221	else if (expect_true (prev != next))
923	{	1222	{
924	coro_cctx *prev__cctx;	1223	coro_cctx *prev__cctx;
925		1224
926	if (prev->flags & CF_NEW)	1225	if (expect_false (prev->flags & CF_NEW))
927	{	1226	{
928	/* create a new empty context */	1227	/* create a new empty context */
929	Newz (0, prev->cctx, 1, coro_cctx);	1228	Newz (0, prev->cctx, 1, coro_cctx);
930	prev->flags &= ~CF_NEW;	1229	prev->flags &= ~CF_NEW;
931	prev->flags |= CF_RUNNING;	1230	prev->flags |= CF_RUNNING;
932	}	1231	}
933		1232
934	/*TODO: must not croak here */
935	if (!prev->flags & CF_RUNNING)
936	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
937
938	if (next->flags & CF_RUNNING)
939	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
940
941	if (next->flags & CF_DESTROYED)
942	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
943
944	prev->flags &= ~CF_RUNNING;	1233	prev->flags &= ~CF_RUNNING;
945	next->flags |= CF_RUNNING;	1234	next->flags |= CF_RUNNING;
946		1235
947	LOCK;	1236	LOCK;
948		1237
		1238	/* first get rid of the old state */
		1239	save_perl (aTHX_ prev);
		1240
949	if (next->flags & CF_NEW)	1241	if (expect_false (next->flags & CF_NEW))
950	{	1242	{
951	/* need to start coroutine */	1243	/* need to start coroutine */
952	next->flags &= ~CF_NEW;	1244	next->flags &= ~CF_NEW;
953	/* first get rid of the old state */
954	save_perl (aTHX_ prev);
955	/* setup coroutine call */	1245	/* setup coroutine call */
956	setup_coro (aTHX_ next);	1246	coro_setup (aTHX_ next);
957	}	1247	}
958	else	1248	else
959	{
960	/* coroutine already started */
961	save_perl (aTHX_ prev);
962	load_perl (aTHX_ next);	1249	load_perl (aTHX_ next);
963	}
964		1250
965	prev__cctx = prev->cctx;	1251	prev__cctx = prev->cctx;
966		1252
967	/* possibly "free" the cctx */	1253	/* possibly "free" the cctx */
968	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1254	if (expect_true (
		1255	prev__cctx->idle_sp == STACKLEVEL
		1256	&& !(prev__cctx->flags & CC_TRACE)
		1257	&& !force_cctx
		1258	))
969	{	1259	{
970	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1260	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
971	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1261	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
972		1262
973	prev->cctx = 0;	1263	prev->cctx = 0;
974		1264
		1265	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1266	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1267	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1268	if (!next->cctx)
		1269	next->cctx = cctx_get (aTHX);
		1270
975	cctx_put (prev__cctx);	1271	cctx_put (prev__cctx);
976	}	1272	}
977		1273
		1274	++next->usecount;
		1275
978	if (!next->cctx)	1276	if (expect_true (!next->cctx))
979	next->cctx = cctx_get (aTHX);	1277	next->cctx = cctx_get (aTHX);
980		1278
		1279	has_throw = !!next->throw;
		1280
981	if (prev__cctx != next->cctx)	1281	if (expect_false (prev__cctx != next->cctx))
982	{	1282	{
983	prev__cctx->top_env = PL_top_env;	1283	prev__cctx->top_env = PL_top_env;
984	PL_top_env = next->cctx->top_env;	1284	PL_top_env = next->cctx->top_env;
985	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1285	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
986	}	1286	}
987		1287
988	free_coro_mortal (aTHX);	1288	free_coro_mortal (aTHX);
989	UNLOCK;	1289	UNLOCK;
		1290
		1291	if (expect_false (has_throw))
		1292	{
		1293	struct coro *coro = SvSTATE (coro_current);
		1294
		1295	if (coro->throw)
		1296	{
		1297	SV *exception = coro->throw;
		1298	coro->throw = 0;
		1299	sv_setsv (ERRSV, exception);
		1300	croak (0);
		1301	}
		1302	}
990	}	1303	}
991	}	1304	}
992		1305
993	struct transfer_args	1306	struct transfer_args
994	{	1307	{
995	struct coro *prev, *next;	1308	struct coro *prev, *next;
996	};	1309	};
997		1310
		1311	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
998	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1312	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
999		1313
1000	/** high level stuff ********************************************************/	1314	/** high level stuff ********************************************************/
1001		1315
1002	static int	1316	static int
1003	coro_state_destroy (pTHX_ struct coro *coro)	1317	coro_state_destroy (pTHX_ struct coro *coro)
…		…
1020		1334
1021	if (coro->mainstack && coro->mainstack != main_mainstack)	1335	if (coro->mainstack && coro->mainstack != main_mainstack)
1022	{	1336	{
1023	struct coro temp;	1337	struct coro temp;
1024		1338
1025	assert (!(coro->flags & CF_RUNNING));
1026
1027	Zero (&temp, 1, struct coro);
1028	temp.save = CORO_SAVE_ALL;
1029
1030	if (coro->flags & CF_RUNNING)	1339	if (coro->flags & CF_RUNNING)
1031	croak ("FATAL: tried to destroy currently running coroutine");	1340	croak ("FATAL: tried to destroy currently running coroutine");
1032		1341
1033	save_perl (aTHX_ &temp);	1342	save_perl (aTHX_ &temp);
1034	load_perl (aTHX_ coro);	1343	load_perl (aTHX_ coro);
1035		1344
1036	coro_destroy_stacks (aTHX);	1345	coro_destroy (aTHX_ coro);
1037		1346
1038	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1347	load_perl (aTHX_ &temp);
1039		1348
1040	coro->mainstack = 0;	1349	coro->slot = 0;
1041	}	1350	}
1042		1351
1043	cctx_destroy (coro->cctx);	1352	cctx_destroy (coro->cctx);
1044	SvREFCNT_dec (coro->args);	1353	SvREFCNT_dec (coro->args);
1045		1354
…		…
1086	#else	1395	#else
1087	# define MGf_DUP 0	1396	# define MGf_DUP 0
1088	#endif	1397	#endif
1089	};	1398	};
1090		1399
1091	static struct coro *
1092	SvSTATE_ (pTHX_ SV *coro)
1093	{
1094	HV *stash;
1095	MAGIC *mg;
1096
1097	if (SvROK (coro))
1098	coro = SvRV (coro);
1099
1100	stash = SvSTASH (coro);
1101	if (stash != coro_stash && stash != coro_state_stash)
1102	{
1103	/* very slow, but rare, check */
1104	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
1105	croak ("Coro::State object required");
1106	}
1107
1108	mg = CORO_MAGIC (coro);
1109	return (struct coro *)mg->mg_ptr;
1110	}
1111
1112	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1113
1114	static void	1400	static void
1115	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1401	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1116	{	1402	{
1117	ta->prev = SvSTATE (prev_sv);	1403	ta->prev = SvSTATE (prev_sv);
1118	ta->next = SvSTATE (next_sv);	1404	ta->next = SvSTATE (next_sv);
		1405	TRANSFER_CHECK (*ta);
1119	}	1406	}
1120		1407
1121	static void	1408	static void
1122	api_transfer (SV *prev_sv, SV *next_sv)	1409	api_transfer (SV *prev_sv, SV *next_sv)
1123	{	1410	{
1124	dTHX;	1411	dTHX;
1125	struct transfer_args ta;	1412	struct transfer_args ta;
1126		1413
1127	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1414	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1128	TRANSFER (ta);	1415	TRANSFER (ta, 1);
1129	}
1130
1131	static int
1132	api_save (SV *coro_sv, int new_save)
1133	{
1134	dTHX;
1135	struct coro *coro = SvSTATE (coro_sv);
1136	int old_save = coro->save;
1137
1138	if (new_save >= 0)
1139	coro->save = new_save;
1140
1141	return old_save;
1142	}	1416	}
1143		1417
1144	/** Coro ********************************************************************/	1418	/** Coro ********************************************************************/
1145		1419
1146	static void	1420	static void
…		…
1148	{	1422	{
1149	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1423	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1150	}	1424	}
1151		1425
1152	static SV *	1426	static SV *
1153	coro_deq (pTHX_ int min_prio)	1427	coro_deq (pTHX)
1154	{	1428	{
1155	int prio = PRIO_MAX - PRIO_MIN;	1429	int prio;
1156		1430
1157	min_prio -= PRIO_MIN;
1158	if (min_prio < 0)
1159	min_prio = 0;
1160
1161	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1431	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1162	if (AvFILLp (coro_ready [prio]) >= 0)	1432	if (AvFILLp (coro_ready [prio]) >= 0)
1163	return av_shift (coro_ready [prio]);	1433	return av_shift (coro_ready [prio]);
1164		1434
1165	return 0;	1435	return 0;
1166	}	1436	}
…		…
1168	static int	1438	static int
1169	api_ready (SV *coro_sv)	1439	api_ready (SV *coro_sv)
1170	{	1440	{
1171	dTHX;	1441	dTHX;
1172	struct coro *coro;	1442	struct coro *coro;
		1443	SV *sv_hook;
		1444	void (*xs_hook)(void);
1173		1445
1174	if (SvROK (coro_sv))	1446	if (SvROK (coro_sv))
1175	coro_sv = SvRV (coro_sv);	1447	coro_sv = SvRV (coro_sv);
1176		1448
1177	coro = SvSTATE (coro_sv);	1449	coro = SvSTATE (coro_sv);
…		…
1180	return 0;	1452	return 0;
1181		1453
1182	coro->flags |= CF_READY;	1454	coro->flags |= CF_READY;
1183		1455
1184	LOCK;	1456	LOCK;
		1457
		1458	sv_hook = coro_nready ? 0 : coro_readyhook;
		1459	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1460
1185	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1461	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1186	++coro_nready;	1462	++coro_nready;
		1463
1187	UNLOCK;	1464	UNLOCK;
		1465
		1466	if (sv_hook)
		1467	{
		1468	dSP;
		1469
		1470	ENTER;
		1471	SAVETMPS;
		1472
		1473	PUSHMARK (SP);
		1474	PUTBACK;
		1475	call_sv (sv_hook, G_DISCARD);
		1476	SPAGAIN;
		1477
		1478	FREETMPS;
		1479	LEAVE;
		1480	}
		1481
		1482	if (xs_hook)
		1483	xs_hook ();
1188		1484
1189	return 1;	1485	return 1;
1190	}	1486	}
1191		1487
1192	static int	1488	static int
…		…
1202	SV *prev_sv, *next_sv;	1498	SV *prev_sv, *next_sv;
1203		1499
1204	for (;;)	1500	for (;;)
1205	{	1501	{
1206	LOCK;	1502	LOCK;
1207	next_sv = coro_deq (aTHX_ PRIO_MIN);	1503	next_sv = coro_deq (aTHX);
1208		1504
1209	/* nothing to schedule: call the idle handler */	1505	/* nothing to schedule: call the idle handler */
1210	if (!next_sv)	1506	if (expect_false (!next_sv))
1211	{	1507	{
1212	dSP;	1508	dSP;
1213	UNLOCK;	1509	UNLOCK;
1214		1510
1215	ENTER;	1511	ENTER;
1216	SAVETMPS;	1512	SAVETMPS;
1217		1513
1218	PUSHMARK (SP);	1514	PUSHMARK (SP);
1219	PUTBACK;	1515	PUTBACK;
1220	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1516	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1517	SPAGAIN;
1221		1518
1222	FREETMPS;	1519	FREETMPS;
1223	LEAVE;	1520	LEAVE;
1224	continue;	1521	continue;
1225	}	1522	}
1226		1523
1227	ta->next = SvSTATE (next_sv);	1524	ta->next = SvSTATE (next_sv);
1228		1525
1229	/* cannot transfer to destroyed coros, skip and look for next */	1526	/* cannot transfer to destroyed coros, skip and look for next */
1230	if (ta->next->flags & CF_DESTROYED)	1527	if (expect_false (ta->next->flags & CF_DESTROYED))
1231	{	1528	{
1232	UNLOCK;	1529	UNLOCK;
1233	SvREFCNT_dec (next_sv);	1530	SvREFCNT_dec (next_sv);
1234	/* coro_nready is already taken care of by destroy */	1531	/* coro_nready is already taken care of by destroy */
1235	continue;	1532	continue;
…		…
1240	break;	1537	break;
1241	}	1538	}
1242		1539
1243	/* free this only after the transfer */	1540	/* free this only after the transfer */
1244	prev_sv = SvRV (coro_current);	1541	prev_sv = SvRV (coro_current);
1245	SvRV_set (coro_current, next_sv);
1246	ta->prev = SvSTATE (prev_sv);	1542	ta->prev = SvSTATE (prev_sv);
1247		1543	TRANSFER_CHECK (*ta);
1248	assert (ta->next->flags & CF_READY);	1544	assert (ta->next->flags & CF_READY);
1249	ta->next->flags &= ~CF_READY;	1545	ta->next->flags &= ~CF_READY;
		1546	SvRV_set (coro_current, next_sv);
1250		1547
1251	LOCK;	1548	LOCK;
1252	free_coro_mortal (aTHX);	1549	free_coro_mortal (aTHX);
1253	coro_mortal = prev_sv;	1550	coro_mortal = prev_sv;
1254	UNLOCK;	1551	UNLOCK;
…		…
1280	{	1577	{
1281	dTHX;	1578	dTHX;
1282	struct transfer_args ta;	1579	struct transfer_args ta;
1283		1580
1284	prepare_schedule (aTHX_ &ta);	1581	prepare_schedule (aTHX_ &ta);
1285	TRANSFER (ta);	1582	TRANSFER (ta, 1);
1286	}	1583	}
1287		1584
1288	static int	1585	static int
1289	api_cede (void)	1586	api_cede (void)
1290	{	1587	{
1291	dTHX;	1588	dTHX;
1292	struct transfer_args ta;	1589	struct transfer_args ta;
1293		1590
1294	prepare_cede (aTHX_ &ta);	1591	prepare_cede (aTHX_ &ta);
1295		1592
1296	if (ta.prev != ta.next)	1593	if (expect_true (ta.prev != ta.next))
1297	{	1594	{
1298	TRANSFER (ta);	1595	TRANSFER (ta, 1);
1299	return 1;	1596	return 1;
1300	}	1597	}
1301	else	1598	else
1302	return 0;	1599	return 0;
1303	}	1600	}
…		…
1308	dTHX;	1605	dTHX;
1309	struct transfer_args ta;	1606	struct transfer_args ta;
1310		1607
1311	if (prepare_cede_notself (aTHX_ &ta))	1608	if (prepare_cede_notself (aTHX_ &ta))
1312	{	1609	{
1313	TRANSFER (ta);	1610	TRANSFER (ta, 1);
1314	return 1;	1611	return 1;
1315	}	1612	}
1316	else	1613	else
1317	return 0;	1614	return 0;
1318	}	1615	}
1319		1616
		1617	static void
		1618	api_trace (SV *coro_sv, int flags)
		1619	{
		1620	dTHX;
		1621	struct coro *coro = SvSTATE (coro_sv);
		1622
		1623	if (flags & CC_TRACE)
		1624	{
		1625	if (!coro->cctx)
		1626	coro->cctx = cctx_new ();
		1627	else if (!(coro->cctx->flags & CC_TRACE))
		1628	croak ("cannot enable tracing on coroutine with custom stack");
		1629
		1630	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1631	}
		1632	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1633	{
		1634	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1635
		1636	if (coro->flags & CF_RUNNING)
		1637	PL_runops = RUNOPS_DEFAULT;
		1638	else
		1639	coro->slot->runops = RUNOPS_DEFAULT;
		1640	}
		1641	}
		1642
		1643	static int
		1644	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1645	{
		1646	AV *padlist;
		1647	AV *av = (AV *)mg->mg_obj;
		1648
		1649	abort ();
		1650
		1651	return 0;
		1652	}
		1653
		1654	static MGVTBL coro_gensub_vtbl = {
		1655	0, 0, 0, 0,
		1656	coro_gensub_free
		1657	};
		1658
		1659	/*****************************************************************************/
		1660	/* PerlIO::cede */
		1661
		1662	typedef struct
		1663	{
		1664	PerlIOBuf base;
		1665	NV next, every;
		1666	} PerlIOCede;
		1667
		1668	static IV
		1669	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1670	{
		1671	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1672
		1673	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1674	self->next = nvtime () + self->every;
		1675
		1676	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1677	}
		1678
		1679	static SV *
		1680	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1681	{
		1682	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1683
		1684	return newSVnv (self->every);
		1685	}
		1686
		1687	static IV
		1688	PerlIOCede_flush (pTHX_ PerlIO *f)
		1689	{
		1690	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1691	double now = nvtime ();
		1692
		1693	if (now >= self->next)
		1694	{
		1695	api_cede ();
		1696	self->next = now + self->every;
		1697	}
		1698
		1699	return PerlIOBuf_flush (aTHX_ f);
		1700	}
		1701
		1702	static PerlIO_funcs PerlIO_cede =
		1703	{
		1704	sizeof(PerlIO_funcs),
		1705	"cede",
		1706	sizeof(PerlIOCede),
		1707	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1708	PerlIOCede_pushed,
		1709	PerlIOBuf_popped,
		1710	PerlIOBuf_open,
		1711	PerlIOBase_binmode,
		1712	PerlIOCede_getarg,
		1713	PerlIOBase_fileno,
		1714	PerlIOBuf_dup,
		1715	PerlIOBuf_read,
		1716	PerlIOBuf_unread,
		1717	PerlIOBuf_write,
		1718	PerlIOBuf_seek,
		1719	PerlIOBuf_tell,
		1720	PerlIOBuf_close,
		1721	PerlIOCede_flush,
		1722	PerlIOBuf_fill,
		1723	PerlIOBase_eof,
		1724	PerlIOBase_error,
		1725	PerlIOBase_clearerr,
		1726	PerlIOBase_setlinebuf,
		1727	PerlIOBuf_get_base,
		1728	PerlIOBuf_bufsiz,
		1729	PerlIOBuf_get_ptr,
		1730	PerlIOBuf_get_cnt,
		1731	PerlIOBuf_set_ptrcnt,
		1732	};
		1733
		1734
1320	MODULE = Coro::State PACKAGE = Coro::State	1735	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1321		1736
1322	PROTOTYPES: DISABLE	1737	PROTOTYPES: DISABLE
1323		1738
1324	BOOT:	1739	BOOT:
1325	{	1740	{
1326	#ifdef USE_ITHREADS	1741	#ifdef USE_ITHREADS
1327	MUTEX_INIT (&coro_mutex);	1742	MUTEX_INIT (&coro_mutex);
1328	#endif	1743	#endif
1329	BOOT_PAGESIZE;	1744	BOOT_PAGESIZE;
		1745
		1746	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1747	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1748
		1749	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1750	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1751	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1752
		1753	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1754	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1755	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1330		1756
1331	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1757	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1332		1758
1333	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1759	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1334	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1760	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1335	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));	1761	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1336	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));	1762	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1337		1763
1338	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1339	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1340	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1341	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1342	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1343	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1344	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1345
1346	main_mainstack = PL_mainstack;	1764	main_mainstack = PL_mainstack;
1347	main_top_env = PL_top_env;	1765	main_top_env = PL_top_env;
1348		1766
1349	while (main_top_env->je_prev)	1767	while (main_top_env->je_prev)
1350	main_top_env = main_top_env->je_prev;	1768	main_top_env = main_top_env->je_prev;
1351		1769
1352	coroapi.ver = CORO_API_VERSION;	1770	coroapi.ver = CORO_API_VERSION;
		1771	coroapi.rev = CORO_API_REVISION;
1353	coroapi.transfer = api_transfer;	1772	coroapi.transfer = api_transfer;
		1773
		1774	{
		1775	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1776
		1777	if (!svp) croak ("Time::HiRes is required");
		1778	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1779
		1780	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1781	}
1354		1782
1355	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1783	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1356	}	1784	}
1357		1785
1358	SV *	1786	SV *
1359	new (char *klass, ...)	1787	new (char *klass, ...)
1360	CODE:	1788	CODE:
1361	{	1789	{
1362	struct coro *coro;	1790	struct coro *coro;
		1791	MAGIC *mg;
1363	HV *hv;	1792	HV *hv;
1364	int i;	1793	int i;
1365		1794
1366	Newz (0, coro, 1, struct coro);	1795	Newz (0, coro, 1, struct coro);
1367	coro->args = newAV ();	1796	coro->args = newAV ();
1368	coro->save = CORO_SAVE_DEF;
1369	coro->flags = CF_NEW;	1797	coro->flags = CF_NEW;
1370		1798
1371	if (coro_first) coro_first->prev = coro;	1799	if (coro_first) coro_first->prev = coro;
1372	coro->next = coro_first;	1800	coro->next = coro_first;
1373	coro_first = coro;	1801	coro_first = coro;
1374		1802
1375	coro->hv = hv = newHV ();	1803	coro->hv = hv = newHV ();
1376	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1804	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1805	mg->mg_flags |= MGf_DUP;
1377	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1806	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1378		1807
		1808	av_extend (coro->args, items - 1);
1379	for (i = 1; i < items; i++)	1809	for (i = 1; i < items; i++)
1380	av_push (coro->args, newSVsv (ST (i)));	1810	av_push (coro->args, newSVsv (ST (i)));
1381	}	1811	}
1382	OUTPUT:	1812	OUTPUT:
1383	RETVAL	1813	RETVAL
1384		1814
1385	int	1815	# these not obviously related functions are all rolled into the same xs
1386	save (SV *coro, int new_save = -1)	1816	# function to increase chances that they all will call transfer with the same
1387	CODE:	1817	# stack offset
1388	RETVAL = api_save (coro, new_save);
1389	OUTPUT:
1390	RETVAL
1391
1392	int
1393	save_also (SV *coro_sv, int save_also)
1394	CODE:
1395	{
1396	struct coro *coro = SvSTATE (coro_sv);
1397	RETVAL = coro->save;
1398	coro->save |= save_also;
1399	}
1400	OUTPUT:
1401	RETVAL
1402
1403	void	1818	void
1404	_set_stacklevel (...)	1819	_set_stacklevel (...)
1405	ALIAS:	1820	ALIAS:
1406	Coro::State::transfer = 1	1821	Coro::State::transfer = 1
1407	Coro::schedule = 2	1822	Coro::schedule = 2
…		…
1409	Coro::cede_notself = 4	1824	Coro::cede_notself = 4
1410	CODE:	1825	CODE:
1411	{	1826	{
1412	struct transfer_args ta;	1827	struct transfer_args ta;
1413		1828
		1829	PUTBACK;
1414	switch (ix)	1830	switch (ix)
1415	{	1831	{
1416	case 0:	1832	case 0:
1417	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1833	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1418	ta.next = 0;	1834	ta.next = 0;
…		…
1437	if (!prepare_cede_notself (aTHX_ &ta))	1853	if (!prepare_cede_notself (aTHX_ &ta))
1438	XSRETURN_EMPTY;	1854	XSRETURN_EMPTY;
1439		1855
1440	break;	1856	break;
1441	}	1857	}
		1858	SPAGAIN;
1442		1859
1443	BARRIER;	1860	BARRIER;
		1861	PUTBACK;
1444	TRANSFER (ta);	1862	TRANSFER (ta, 0);
1445		1863	SPAGAIN; /* might be the sp of a different coroutine now */
1446	if (GIMME_V != G_VOID && ta.next != ta.prev)	1864	/* be extra careful not to ever do anything after TRANSFER */
1447	XSRETURN_YES;
1448	}	1865	}
1449		1866
1450	bool	1867	bool
1451	_destroy (SV *coro_sv)	1868	_destroy (SV *coro_sv)
1452	CODE:	1869	CODE:
1453	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1870	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1454	OUTPUT:	1871	OUTPUT:
1455	RETVAL	1872	RETVAL
1456		1873
1457	void	1874	void
1458	_exit (code)	1875	_exit (int code)
1459	int code
1460	PROTOTYPE: $	1876	PROTOTYPE: $
1461	CODE:	1877	CODE:
1462	_exit (code);	1878	_exit (code);
1463		1879
1464	int	1880	int
…		…
1498	call (Coro::State coro, SV *coderef)	1914	call (Coro::State coro, SV *coderef)
1499	ALIAS:	1915	ALIAS:
1500	eval = 1	1916	eval = 1
1501	CODE:	1917	CODE:
1502	{	1918	{
1503	if (coro->mainstack)	1919	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1504	{	1920	{
1505	struct coro temp;	1921	struct coro temp;
1506	Zero (&temp, 1, struct coro);
1507	temp.save = CORO_SAVE_ALL;
1508		1922
1509	if (!(coro->flags & CF_RUNNING))	1923	if (!(coro->flags & CF_RUNNING))
1510	{	1924	{
		1925	PUTBACK;
1511	save_perl (aTHX_ &temp);	1926	save_perl (aTHX_ &temp);
1512	load_perl (aTHX_ coro);	1927	load_perl (aTHX_ coro);
1513	}	1928	}
1514		1929
1515	{	1930	{
1516	dSP;	1931	dSP;
1517	ENTER;	1932	ENTER;
1518	SAVETMPS;	1933	SAVETMPS;
		1934	PUTBACK;
		1935	PUSHSTACK;
1519	PUSHMARK (SP);	1936	PUSHMARK (SP);
1520	PUTBACK;	1937
1521	if (ix)	1938	if (ix)
1522	eval_sv (coderef, 0);	1939	eval_sv (coderef, 0);
1523	else	1940	else
1524	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1941	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1942
		1943	POPSTACK;
1525	SPAGAIN;	1944	SPAGAIN;
1526	FREETMPS;	1945	FREETMPS;
1527	LEAVE;	1946	LEAVE;
1528	PUTBACK;	1947	PUTBACK;
1529	}	1948	}
1530		1949
1531	if (!(coro->flags & CF_RUNNING))	1950	if (!(coro->flags & CF_RUNNING))
1532	{	1951	{
1533	save_perl (aTHX_ coro);	1952	save_perl (aTHX_ coro);
1534	load_perl (aTHX_ &temp);	1953	load_perl (aTHX_ &temp);
		1954	SPAGAIN;
1535	}	1955	}
1536	}	1956	}
1537	}	1957	}
1538		1958
1539	SV *	1959	SV *
1540	is_ready (Coro::State coro)	1960	is_ready (Coro::State coro)
1541	PROTOTYPE: $	1961	PROTOTYPE: $
1542	ALIAS:	1962	ALIAS:
1543	is_ready = CF_READY	1963	is_ready = CF_READY
…		…
1548	RETVAL = boolSV (coro->flags & ix);	1968	RETVAL = boolSV (coro->flags & ix);
1549	OUTPUT:	1969	OUTPUT:
1550	RETVAL	1970	RETVAL
1551		1971
1552	void	1972	void
1553	trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB)	1973	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1554	CODE:
1555	if (flags & CC_TRACE)
1556	{
1557	if (!coro->cctx)
1558	coro->cctx = cctx_new ();
1559	else if (!(coro->cctx->flags & CC_TRACE))
1560	croak ("cannot enable tracing on coroutine with custom stack");
1561
1562	coro->cctx->flags |= flags & (CC_TRACE | CC_TRACE_ALL);
1563	}
1564	else
1565	if (coro->cctx && coro->cctx->flags & CC_TRACE)
1566	{
1567	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1568	coro->cctx->flags |= CC_NOREUSE;
1569
1570	if (coro->flags & CF_RUNNING)
1571	PL_runops = RUNOPS_DEFAULT;
1572	else
1573	coro->runops = RUNOPS_DEFAULT;
1574	}
1575		1974
1576	SV *	1975	SV *
1577	has_stack (Coro::State coro)	1976	has_cctx (Coro::State coro)
1578	PROTOTYPE: $	1977	PROTOTYPE: $
1579	CODE:	1978	CODE:
1580	RETVAL = boolSV (!!coro->cctx);	1979	RETVAL = boolSV (!!coro->cctx);
1581	OUTPUT:	1980	OUTPUT:
1582	RETVAL	1981	RETVAL
…		…
1590	RETVAL	1989	RETVAL
1591		1990
1592	IV	1991	IV
1593	rss (Coro::State coro)	1992	rss (Coro::State coro)
1594	PROTOTYPE: $	1993	PROTOTYPE: $
		1994	ALIAS:
		1995	usecount = 1
1595	CODE:	1996	CODE:
1596	RETVAL = coro_rss (coro);	1997	switch (ix)
		1998	{
		1999	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		2000	case 1: RETVAL = coro->usecount; break;
		2001	}
1597	OUTPUT:	2002	OUTPUT:
1598	RETVAL	2003	RETVAL
1599		2004
		2005	void
		2006	force_cctx ()
		2007	CODE:
		2008	struct coro *coro = SvSTATE (coro_current);
		2009	coro->cctx->idle_sp = 0;
		2010
		2011	void
		2012	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2013	PROTOTYPE: $;$
		2014	CODE:
		2015	SvREFCNT_dec (self->throw);
		2016	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2017
		2018	void
		2019	swap_defsv (Coro::State self)
		2020	PROTOTYPE: $
		2021	ALIAS:
		2022	swap_defav = 1
		2023	CODE:
		2024	if (!self->slot)
		2025	croak ("cannot swap state with coroutine that has no saved state");
		2026	else
		2027	{
		2028	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2029	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2030
		2031	SV *tmp = *src; *src = *dst; *dst = tmp;
		2032	}
1600		2033
1601	MODULE = Coro::State PACKAGE = Coro	2034	MODULE = Coro::State PACKAGE = Coro
1602		2035
1603	BOOT:	2036	BOOT:
1604	{	2037	{
1605	int i;	2038	int i;
1606		2039
1607	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1608	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1609	av_async_pool = get_av ("Coro::async_pool", TRUE);	2040	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2041	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2042	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1610		2043
1611	coro_current = get_sv ("Coro::current", FALSE);	2044	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1612	SvREADONLY_on (coro_current);	2045	SvREADONLY_on (coro_current);
1613		2046
1614	coro_stash = gv_stashpv ("Coro", TRUE);	2047	coro_stash = gv_stashpv ("Coro", TRUE);
1615		2048
1616	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2049	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1617	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2050	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1618	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2051	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1619	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2052	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1622		2055
1623	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2056	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1624	coro_ready[i] = newAV ();	2057	coro_ready[i] = newAV ();
1625		2058
1626	{	2059	{
1627	SV *sv = perl_get_sv("Coro::API", 1);	2060	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2061	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1628		2062
1629	coroapi.schedule = api_schedule;	2063	coroapi.schedule = api_schedule;
1630	coroapi.save = api_save;
1631	coroapi.cede = api_cede;	2064	coroapi.cede = api_cede;
1632	coroapi.cede_notself = api_cede_notself;	2065	coroapi.cede_notself = api_cede_notself;
1633	coroapi.ready = api_ready;	2066	coroapi.ready = api_ready;
1634	coroapi.is_ready = api_is_ready;	2067	coroapi.is_ready = api_is_ready;
1635	coroapi.nready = &coro_nready;	2068	coroapi.nready = &coro_nready;
…		…
1644	void	2077	void
1645	_set_current (SV *current)	2078	_set_current (SV *current)
1646	PROTOTYPE: $	2079	PROTOTYPE: $
1647	CODE:	2080	CODE:
1648	SvREFCNT_dec (SvRV (coro_current));	2081	SvREFCNT_dec (SvRV (coro_current));
1649	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2082	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2083
		2084	void
		2085	_set_readyhook (SV *hook)
		2086	PROTOTYPE: $
		2087	CODE:
		2088	LOCK;
		2089	SvREFCNT_dec (coro_readyhook);
		2090	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2091	UNLOCK;
1650		2092
1651	int	2093	int
1652	prio (Coro::State coro, int newprio = 0)	2094	prio (Coro::State coro, int newprio = 0)
1653	ALIAS:	2095	ALIAS:
1654	nice = 1	2096	nice = 1
…		…
1689	# for async_pool speedup	2131	# for async_pool speedup
1690	void	2132	void
1691	_pool_1 (SV *cb)	2133	_pool_1 (SV *cb)
1692	CODE:	2134	CODE:
1693	{	2135	{
1694	int i, len;	2136	struct coro *coro = SvSTATE (coro_current);
1695	HV *hv = (HV *)SvRV (coro_current);	2137	HV *hv = (HV *)SvRV (coro_current);
1696	AV *defav = GvAV (PL_defgv);	2138	AV *defav = GvAV (PL_defgv);
1697	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2139	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1698	AV *invoke_av;	2140	AV *invoke_av;
		2141	int i, len;
1699		2142
1700	if (!invoke)	2143	if (!invoke)
		2144	{
		2145	SV *old = PL_diehook;
		2146	PL_diehook = 0;
		2147	SvREFCNT_dec (old);
1701	croak ("\3terminate\2\n");	2148	croak ("\3async_pool terminate\2\n");
		2149	}
		2150
		2151	SvREFCNT_dec (coro->saved_deffh);
		2152	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1702		2153
1703	hv_store (hv, "desc", sizeof ("desc") - 1,	2154	hv_store (hv, "desc", sizeof ("desc") - 1,
1704	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2155	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1705		2156
1706	invoke_av = (AV *)SvRV (invoke);	2157	invoke_av = (AV *)SvRV (invoke);
…		…
1710		2161
1711	if (len > 0)	2162	if (len > 0)
1712	{	2163	{
1713	av_fill (defav, len - 1);	2164	av_fill (defav, len - 1);
1714	for (i = 0; i < len; ++i)	2165	for (i = 0; i < len; ++i)
1715	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2166	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1716	}	2167	}
1717		2168
1718	SvREFCNT_dec (invoke);	2169	SvREFCNT_dec (invoke);
1719	}	2170	}
1720		2171
…		…
1724	{	2175	{
1725	struct coro *coro = SvSTATE (coro_current);	2176	struct coro *coro = SvSTATE (coro_current);
1726		2177
1727	sv_setsv (cb, &PL_sv_undef);	2178	sv_setsv (cb, &PL_sv_undef);
1728		2179
		2180	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2181	coro->saved_deffh = 0;
		2182
1729	if (coro_rss (coro) > SvIV (sv_pool_rss)	2183	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1730	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2184	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2185	{
		2186	SV *old = PL_diehook;
		2187	PL_diehook = 0;
		2188	SvREFCNT_dec (old);
1731	croak ("\3terminate\2\n");	2189	croak ("\3async_pool terminate\2\n");
		2190	}
1732		2191
1733	av_clear (GvAV (PL_defgv));	2192	av_clear (GvAV (PL_defgv));
1734	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2193	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1735	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2194	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1736	coro->save = CORO_SAVE_DEF;	2195
1737	coro->prio = 0;	2196	coro->prio = 0;
		2197
		2198	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2199	api_trace (coro_current, 0);
		2200
1738	av_push (av_async_pool, newSVsv (coro_current));	2201	av_push (av_async_pool, newSVsv (coro_current));
1739	}	2202	}
1740		2203
		2204	#if 0
		2205
		2206	void
		2207	_generator_call (...)
		2208	PROTOTYPE: @
		2209	PPCODE:
		2210	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2211	xxxx
		2212	abort ();
		2213
		2214	SV *
		2215	gensub (SV *sub, ...)
		2216	PROTOTYPE: &;@
		2217	CODE:
		2218	{
		2219	struct coro *coro;
		2220	MAGIC *mg;
		2221	CV *xcv;
		2222	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2223	int i;
		2224
		2225	CvGV (ncv) = CvGV (cv);
		2226	CvFILE (ncv) = CvFILE (cv);
		2227
		2228	Newz (0, coro, 1, struct coro);
		2229	coro->args = newAV ();
		2230	coro->flags = CF_NEW;
		2231
		2232	av_extend (coro->args, items - 1);
		2233	for (i = 1; i < items; i++)
		2234	av_push (coro->args, newSVsv (ST (i)));
		2235
		2236	CvISXSUB_on (ncv);
		2237	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2238
		2239	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2240
		2241	CvXSUB (ncv) = CvXSUB (xcv);
		2242	CvANON_on (ncv);
		2243
		2244	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2245	RETVAL = newRV_noinc ((SV *)ncv);
		2246	}
		2247	OUTPUT:
		2248	RETVAL
		2249
		2250	#endif
		2251
1741		2252
1742	MODULE = Coro::State PACKAGE = Coro::AIO	2253	MODULE = Coro::State PACKAGE = Coro::AIO
1743		2254
1744	SV *	2255	void
1745	_get_state ()	2256	_get_state (SV *self)
1746	CODE:	2257	PPCODE:
1747	{	2258	{
1748	struct io_state *data;	2259	AV *defav = GvAV (PL_defgv);
1749		2260	AV *av = newAV ();
		2261	int i;
1750	RETVAL = newSV (sizeof (struct io_state));	2262	SV *data_sv = newSV (sizeof (struct io_state));
1751	data = (struct io_state *)SvPVX (RETVAL);	2263	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1752	SvCUR_set (RETVAL, sizeof (struct io_state));	2264	SvCUR_set (data_sv, sizeof (struct io_state));
1753	SvPOK_only (RETVAL);	2265	SvPOK_only (data_sv);
1754		2266
1755	data->errorno = errno;	2267	data->errorno = errno;
1756	data->laststype = PL_laststype;	2268	data->laststype = PL_laststype;
1757	data->laststatval = PL_laststatval;	2269	data->laststatval = PL_laststatval;
1758	data->statcache = PL_statcache;	2270	data->statcache = PL_statcache;
		2271
		2272	av_extend (av, AvFILLp (defav) + 1 + 1);
		2273
		2274	for (i = 0; i <= AvFILLp (defav); ++i)
		2275	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2276
		2277	av_push (av, data_sv);
		2278
		2279	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2280
		2281	api_ready (self);
1759	}	2282	}
1760	OUTPUT:
1761	RETVAL
1762		2283
1763	void	2284	void
1764	_set_state (char *data_)	2285	_set_state (SV *state)
1765	PROTOTYPE: $	2286	PROTOTYPE: $
1766	CODE:	2287	PPCODE:
1767	{	2288	{
1768	struct io_state *data = (void *)data_;	2289	AV *av = (AV *)SvRV (state);
		2290	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2291	int i;
1769		2292
1770	errno = data->errorno;	2293	errno = data->errorno;
1771	PL_laststype = data->laststype;	2294	PL_laststype = data->laststype;
1772	PL_laststatval = data->laststatval;	2295	PL_laststatval = data->laststatval;
1773	PL_statcache = data->statcache;	2296	PL_statcache = data->statcache;
1774	}
1775		2297
		2298	EXTEND (SP, AvFILLp (av));
		2299	for (i = 0; i < AvFILLp (av); ++i)
		2300	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2301	}
		2302
		2303
		2304	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2305
		2306	BOOT:
		2307	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2308
		2309	SV *
		2310	_schedule (...)
		2311	PROTOTYPE: @
		2312	CODE:
		2313	{
		2314	static int incede;
		2315
		2316	api_cede_notself ();
		2317
		2318	++incede;
		2319	while (coro_nready >= incede && api_cede ())
		2320	;
		2321
		2322	sv_setsv (sv_activity, &PL_sv_undef);
		2323	if (coro_nready >= incede)
		2324	{
		2325	PUSHMARK (SP);
		2326	PUTBACK;
		2327	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2328	SPAGAIN;
		2329	}
		2330
		2331	--incede;
		2332	}
		2333
		2334
		2335	MODULE = Coro::State PACKAGE = PerlIO::cede
		2336
		2337	BOOT:
		2338	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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