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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 1.245 by root, Mon Sep 22 05:40:21 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"
8		9
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#include <stdio.h>	12	#include <stdio.h>
12	#include <errno.h>	13	#include <errno.h>
13	#include <assert.h>	14	#include <assert.h>
		15
		16	#ifdef WIN32
		17	# undef setjmp
		18	# undef longjmp
		19	# undef _exit
		20	# define setjmp _setjmp // deep magic, don't ask
		21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
		23	#endif
14		24
15	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
16	# include <unistd.h>	26	# include <unistd.h>
17	# include <sys/mman.h>	27	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	28	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	80	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	81	# define IS_PADCONST(v) 0
72	# endif	82	# endif
73	#endif	83	#endif
74		84
		85	/* 5.8.8 */
		86	#ifndef GV_NOTQUAL
		87	# define GV_NOTQUAL 0
		88	#endif
		89	#ifndef newSV
		90	# define newSV(l) NEWSV(0,l)
		91	#endif
		92
		93	/* 5.11 */
		94	#ifndef CxHASARGS
		95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		96	#endif
		97
75	/* 5.8.7 */	98	/* 5.8.7 */
76	#ifndef SvRV_set	99	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	100	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	101	#endif
79		102
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		122
100	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	127	#else
104	# define attribute(x)	128	# define attribute(x)
105	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
106	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
107		135
108	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
109		137
110	#include "CoroAPI.h"	138	#include "CoroAPI.h"
111		139
…		…
130	static size_t coro_stacksize = CORO_STACKSIZE;	158	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	160	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	161	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	162	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	163	static volatile SV *coro_mortal; /* will be freed after next transfer */
		164
		165	static GV *irsgv; /* $/ */
		166	static GV *stdoutgv; /* *STDOUT */
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV *hv_sig; /* %SIG */
136		170
137	/* async_pool helper stuff */	171	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	172	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	173	static SV *sv_pool_size;
140	static AV *av_async_pool;	174	static AV *av_async_pool;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
141		178
142	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
143	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
144		181
145	enum {	182	enum {
…		…
176	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
177	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179	};	216	};
180		217
		218	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		219	typedef struct {
		220	SV *defsv;
		221	AV *defav;
		222	SV *errsv;
		223	SV *irsgv;
		224	#define VAR(name,type) type name;
		225	# include "state.h"
		226	#undef VAR
		227	} perl_slots;
		228
		229	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		230
181	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
182	struct coro {	232	struct coro {
183	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
184	coro_cctx *cctx;	234	coro_cctx *cctx;
185		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots *slot; /* basically the saved sp */
		239
186	/* data associated with this coroutine (initial args) */	240	AV *args; /* data associated with this coroutine (initial args) */
187	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
188	int refcnt;
189	int save; /* CORO_SAVE flags */
190	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
		243	HV *hv; /* the perl hash associated with this coro, if any */
191		244
192	/* optionally saved, might be zero */	245	/* statistics */
193	AV *defav; /* @_ */	246	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		247
204	/* coro process data */	248	/* coro process data */
205	int prio;	249	int prio;
		250	SV *throw; /* exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
206		254
207	/* linked list */	255	/* linked list */
208	struct coro *next, *prev;	256	struct coro *next, *prev;
209	HV *hv; /* the perl hash associated with this coro, if any */
210	};	257	};
211		258
212	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
213	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
214		261
…		…
221	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
222	#define PRIO_MIN -4	269	#define PRIO_MIN -4
223		270
224	/* for Coro.pm */	271	/* for Coro.pm */
225	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
226	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
227	static int coro_nready;	275	static int coro_nready;
228	static struct coro *coro_first;	276	static struct coro *coro_first;
229		277
230	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
231		279
		280	static SV *
		281	coro_get_sv (pTHX_ const char *name, int create)
		282	{
		283	#if PERL_VERSION_ATLEAST (5,10,0)
		284	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		285	get_sv (name, create);
		286	#endif
		287	return get_sv (name, create);
		288	}
		289
		290	static AV *
		291	coro_get_av (pTHX_ const char *name, int create)
		292	{
		293	#if PERL_VERSION_ATLEAST (5,10,0)
		294	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		295	get_av (name, create);
		296	#endif
		297	return get_av (name, create);
		298	}
		299
		300	static HV *
		301	coro_get_hv (pTHX_ const char *name, int create)
		302	{
		303	#if PERL_VERSION_ATLEAST (5,10,0)
		304	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		305	get_hv (name, create);
		306	#endif
		307	return get_hv (name, create);
		308	}
		309
232	static AV *	310	static AV *
233	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
234	{	312	{
235	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
236	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
237		315
238	newpadlist = newAV ();	316	newpadlist = newAV ();
239	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
240	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
241	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
242	#else	320	#else
243	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
244	#endif	322	#endif
245	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
283		361
284	/* casting is fun. */	362	/* casting is fun. */
285	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
286	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
287		365
288	SvREFCNT_dec (av);	366	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
289		367
290	return 0;	368	return 0;
291	}	369	}
292		370
293	#define PERL_MAGIC_coro PERL_MAGIC_ext	371	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		372	#define CORO_MAGIC_type_state PERL_MAGIC_ext
294		373
295	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	374	static MGVTBL coro_cv_vtbl = {
		375	0, 0, 0, 0,
		376	coro_cv_free
		377	};
296		378
297	#define CORO_MAGIC(cv) \	379	#define CORO_MAGIC(sv,type) \
298	SvMAGIC (cv) \	380	SvMAGIC (sv) \
299	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	381	? SvMAGIC (sv)->mg_type == type \
300	? SvMAGIC (cv) \	382	? SvMAGIC (sv) \
301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	383	: mg_find (sv, type) \
302	: 0	384	: 0
		385
		386	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		387	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		388
		389	static struct coro *
		390	SvSTATE_ (pTHX_ SV *coro)
		391	{
		392	HV *stash;
		393	MAGIC *mg;
		394
		395	if (SvROK (coro))
		396	coro = SvRV (coro);
		397
		398	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		399	croak ("Coro::State object required");
		400
		401	stash = SvSTASH (coro);
		402	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		403	{
		404	/* very slow, but rare, check */
		405	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		406	croak ("Coro::State object required");
		407	}
		408
		409	mg = CORO_MAGIC_state (coro);
		410	return (struct coro *)mg->mg_ptr;
		411	}
		412
		413	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
303		414
304	/* the next two functions merely cache the padlists */	415	/* the next two functions merely cache the padlists */
305	static void	416	static void
306	get_padlist (pTHX_ CV *cv)	417	get_padlist (pTHX_ CV *cv)
307	{	418	{
308	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC_cv (cv);
309	AV *av;	420	AV *av;
310		421
311	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	422	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
312	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	423	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
313	else	424	else
314	{	425	{
315	#if CORO_PREFER_PERL_FUNCTIONS	426	#if CORO_PREFER_PERL_FUNCTIONS
316	/* this is probably cleaner, but also slower? */	427	/* this is probably cleaner? but also slower! */
		428	/* in practise, it seems to be less stable */
317	CV *cp = Perl_cv_clone (cv);	429	CV *cp = Perl_cv_clone (cv);
318	CvPADLIST (cv) = CvPADLIST (cp);	430	CvPADLIST (cv) = CvPADLIST (cp);
319	CvPADLIST (cp) = 0;	431	CvPADLIST (cp) = 0;
320	SvREFCNT_dec (cp);	432	SvREFCNT_dec (cp);
321	#else	433	#else
…		…
325	}	437	}
326		438
327	static void	439	static void
328	put_padlist (pTHX_ CV *cv)	440	put_padlist (pTHX_ CV *cv)
329	{	441	{
330	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
331	AV *av;	443	AV *av;
332		444
333	if (!mg)	445	if (expect_false (!mg))
334	{	446	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		447
341	av = (AV *)mg->mg_obj;	448	av = (AV *)mg->mg_obj;
342		449
343	if (AvFILLp (av) >= AvMAX (av))	450	if (expect_false (AvFILLp (av) >= AvMAX (av)))
344	av_extend (av, AvMAX (av) + 1);	451	av_extend (av, AvMAX (av) + 1);
345		452
346	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	453	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
347	}	454	}
348		455
349	/** load & save, init *******************************************************/	456	/** 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		457
356	static void	458	static void
357	load_perl (pTHX_ Coro__State c)	459	load_perl (pTHX_ Coro__State c)
358	{	460	{
		461	perl_slots *slot = c->slot;
		462	c->slot = 0;
		463
		464	PL_mainstack = c->mainstack;
		465
		466	GvSV (PL_defgv) = slot->defsv;
		467	GvAV (PL_defgv) = slot->defav;
		468	GvSV (PL_errgv) = slot->errsv;
		469	GvSV (irsgv) = slot->irsgv;
		470
359	#define VAR(name,type) PL_ ## name = c->name;	471	#define VAR(name,type) PL_ ## name = slot->name;
360	# include "state.h"	472	# include "state.h"
361	#undef VAR	473	#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		474
383	{	475	{
384	dSP;	476	dSP;
		477
385	CV *cv;	478	CV *cv;
386		479
387	/* now do the ugly restore mess */	480	/* now do the ugly restore mess */
388	while ((cv = (CV *)POPs))	481	while (expect_true (cv = (CV *)POPs))
389	{	482	{
390	put_padlist (aTHX_ cv); /* mark this padlist as available */	483	put_padlist (aTHX_ cv); /* mark this padlist as available */
391	CvDEPTH (cv) = PTR2IV (POPs);	484	CvDEPTH (cv) = PTR2IV (POPs);
392	CvPADLIST (cv) = (AV *)POPs;	485	CvPADLIST (cv) = (AV *)POPs;
393	}	486	}
…		…
412		505
413	XPUSHs (Nullsv);	506	XPUSHs (Nullsv);
414	/* this loop was inspired by pp_caller */	507	/* this loop was inspired by pp_caller */
415	for (;;)	508	for (;;)
416	{	509	{
417	while (cxix >= 0)	510	while (expect_true (cxix >= 0))
418	{	511	{
419	PERL_CONTEXT *cx = &ccstk[cxix--];	512	PERL_CONTEXT *cx = &ccstk[cxix--];
420		513
421	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	514	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
422	{	515	{
423	CV *cv = cx->blk_sub.cv;	516	CV *cv = cx->blk_sub.cv;
424		517
425	if (CvDEPTH (cv))	518	if (expect_true (CvDEPTH (cv)))
426	{	519	{
427	EXTEND (SP, 3);	520	EXTEND (SP, 3);
428	PUSHs ((SV *)CvPADLIST (cv));	521	PUSHs ((SV *)CvPADLIST (cv));
429	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	522	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
430	PUSHs ((SV *)cv);	523	PUSHs ((SV *)cv);
431		524
432	CvDEPTH (cv) = 0;	525	CvDEPTH (cv) = 0;
433	get_padlist (aTHX_ cv);	526	get_padlist (aTHX_ cv);
434	}	527	}
435	}	528	}
436	}	529	}
437		530
438	if (top_si->si_type == PERLSI_MAIN)	531	if (expect_true (top_si->si_type == PERLSI_MAIN))
439	break;	532	break;
440		533
441	top_si = top_si->si_prev;	534	top_si = top_si->si_prev;
442	ccstk = top_si->si_cxstack;	535	ccstk = top_si->si_cxstack;
443	cxix = top_si->si_cxix;	536	cxix = top_si->si_cxix;
444	}	537	}
445		538
446	PUTBACK;	539	PUTBACK;
447	}	540	}
448		541
449	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	542	/* allocate some space on the context stack for our purposes */
450	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	543	/* we manually unroll here, as usually 2 slots is enough */
451	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	544	if (SLOT_COUNT >= 1) CXINC;
452	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	545	if (SLOT_COUNT >= 2) CXINC;
453	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	546	if (SLOT_COUNT >= 3) CXINC;
		547	{
		548	int i;
		549	for (i = 3; i < SLOT_COUNT; ++i)
		550	CXINC;
		551	}
		552	cxstack_ix -= SLOT_COUNT; /* undo allocation */
454		553
		554	c->mainstack = PL_mainstack;
		555
		556	{
		557	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		558
		559	slot->defav = GvAV (PL_defgv);
		560	slot->defsv = DEFSV;
		561	slot->errsv = ERRSV;
		562	slot->irsgv = GvSV (irsgv);
		563
455	#define VAR(name,type)c->name = PL_ ## name;	564	#define VAR(name,type) slot->name = PL_ ## name;
456	# include "state.h"	565	# include "state.h"
457	#undef VAR	566	#undef VAR
		567	}
458	}	568	}
459		569
460	/*	570	/*
461	* allocate various perl stacks. This is an exact copy	571	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	572	* of perl.c:init_stacks, except that it uses less memory
…		…
467	# define coro_init_stacks init_stacks	577	# define coro_init_stacks init_stacks
468	#else	578	#else
469	static void	579	static void
470	coro_init_stacks (pTHX)	580	coro_init_stacks (pTHX)
471	{	581	{
472	PL_curstackinfo = new_stackinfo(64, 6);	582	PL_curstackinfo = new_stackinfo(32, 8);
473	PL_curstackinfo->si_type = PERLSI_MAIN;	583	PL_curstackinfo->si_type = PERLSI_MAIN;
474	PL_curstack = PL_curstackinfo->si_stack;	584	PL_curstack = PL_curstackinfo->si_stack;
475	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	585	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
476		586
477	PL_stack_base = AvARRAY(PL_curstack);	587	PL_stack_base = AvARRAY(PL_curstack);
478	PL_stack_sp = PL_stack_base;	588	PL_stack_sp = PL_stack_base;
479	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	589	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
480		590
481	New(50,PL_tmps_stack,64,SV*);	591	New(50,PL_tmps_stack,32,SV*);
482	PL_tmps_floor = -1;	592	PL_tmps_floor = -1;
483	PL_tmps_ix = -1;	593	PL_tmps_ix = -1;
484	PL_tmps_max = 64;	594	PL_tmps_max = 32;
485		595
486	New(54,PL_markstack,16,I32);	596	New(54,PL_markstack,16,I32);
487	PL_markstack_ptr = PL_markstack;	597	PL_markstack_ptr = PL_markstack;
488	PL_markstack_max = PL_markstack + 16;	598	PL_markstack_max = PL_markstack + 16;
489		599
490	#ifdef SET_MARK_OFFSET	600	#ifdef SET_MARK_OFFSET
491	SET_MARK_OFFSET;	601	SET_MARK_OFFSET;
492	#endif	602	#endif
493		603
494	New(54,PL_scopestack,16,I32);	604	New(54,PL_scopestack,8,I32);
495	PL_scopestack_ix = 0;	605	PL_scopestack_ix = 0;
496	PL_scopestack_max = 16;	606	PL_scopestack_max = 8;
497		607
498	New(54,PL_savestack,64,ANY);	608	New(54,PL_savestack,24,ANY);
499	PL_savestack_ix = 0;	609	PL_savestack_ix = 0;
500	PL_savestack_max = 64;	610	PL_savestack_max = 24;
501		611
502	#if !PERL_VERSION_ATLEAST (5,9,0)	612	#if !PERL_VERSION_ATLEAST (5,10,0)
503	New(54,PL_retstack,4,OP*);	613	New(54,PL_retstack,4,OP*);
504	PL_retstack_ix = 0;	614	PL_retstack_ix = 0;
505	PL_retstack_max = 4;	615	PL_retstack_max = 4;
506	#endif	616	#endif
507	}	617	}
…		…
511	* destroy the stacks, the callchain etc...	621	* destroy the stacks, the callchain etc...
512	*/	622	*/
513	static void	623	static void
514	coro_destroy_stacks (pTHX)	624	coro_destroy_stacks (pTHX)
515	{	625	{
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)	626	while (PL_curstackinfo->si_next)
534	PL_curstackinfo = PL_curstackinfo->si_next;	627	PL_curstackinfo = PL_curstackinfo->si_next;
535		628
536	while (PL_curstackinfo)	629	while (PL_curstackinfo)
537	{	630	{
…		…
547		640
548	Safefree (PL_tmps_stack);	641	Safefree (PL_tmps_stack);
549	Safefree (PL_markstack);	642	Safefree (PL_markstack);
550	Safefree (PL_scopestack);	643	Safefree (PL_scopestack);
551	Safefree (PL_savestack);	644	Safefree (PL_savestack);
552	#if !PERL_VERSION_ATLEAST (5,9,0)	645	#if !PERL_VERSION_ATLEAST (5,10,0)
553	Safefree (PL_retstack);	646	Safefree (PL_retstack);
554	#endif	647	#endif
555	}	648	}
556		649
557	static size_t	650	static size_t
558	coro_rss (struct coro *coro)	651	coro_rss (pTHX_ struct coro *coro)
559	{	652	{
560	size_t rss = sizeof (coro);	653	size_t rss = sizeof (*coro);
561		654
562	if (coro->mainstack)	655	if (coro->mainstack)
563	{	656	{
		657	perl_slots tmp_slot;
		658	perl_slots *slot;
		659
564	if (coro->flags & CF_RUNNING)	660	if (coro->flags & CF_RUNNING)
565	{	661	{
		662	slot = &tmp_slot;
		663
566	#define VAR(name,type)coro->name = PL_ ## name;	664	#define VAR(name,type) slot->name = PL_ ## name;
567	# include "state.h"	665	# include "state.h"
568	#undef VAR	666	#undef VAR
569	}	667	}
		668	else
		669	slot = coro->slot;
570		670
		671	if (slot)
		672	{
571	rss += sizeof (coro->curstackinfo);	673	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);	674	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	675	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
575	rss += coro->tmps_max * sizeof (SV *);	676	rss += slot->tmps_max * sizeof (SV *);
576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	677	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
577	rss += coro->scopestack_max * sizeof (I32);	678	rss += slot->scopestack_max * sizeof (I32);
578	rss += coro->savestack_max * sizeof (ANY);	679	rss += slot->savestack_max * sizeof (ANY);
579		680
580	#if !PERL_VERSION_ATLEAST (5,9,0)	681	#if !PERL_VERSION_ATLEAST (5,10,0)
581	rss += coro->retstack_max * sizeof (OP *);	682	rss += slot->retstack_max * sizeof (OP *);
582	#endif	683	#endif
		684	}
583	}	685	}
584		686
585	return rss;	687	return rss;
586	}	688	}
587		689
588	/** coroutine stack handling ************************************************/	690	/** coroutine stack handling ************************************************/
589		691
		692	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		693	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		694	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		695
		696	/* apparently < 5.8.8 */
		697	#ifndef MgPV_nolen_const
		698	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		699	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		700	(const char*)(mg)->mg_ptr)
		701	#endif
		702
		703	/*
		704	* This overrides the default magic get method of %SIG elements.
		705	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		706	* and instead of tryign to save and restore the hash elements, we just provide
		707	* readback here.
		708	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		709	* not expecting this to actually change the hook. This is a potential problem
		710	* when a schedule happens then, but we ignore this.
		711	*/
		712	static int
		713	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		714	{
		715	const char *s = MgPV_nolen_const (mg);
		716
		717	if (*s == '_')
		718	{
		719	SV **svp = 0;
		720
		721	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		722	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		723
		724	if (svp)
		725	{
		726	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		727	return 0;
		728	}
		729	}
		730
		731	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		732	}
		733
		734	static int
		735	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		736	{
		737	const char *s = MgPV_nolen_const (mg);
		738
		739	if (*s == '_')
		740	{
		741	SV **svp = 0;
		742
		743	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		744	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		745
		746	if (svp)
		747	{
		748	SV *old = *svp;
		749	*svp = 0;
		750	SvREFCNT_dec (old);
		751	return 0;
		752	}
		753	}
		754
		755	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		756	}
		757
		758	static int
		759	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		760	{
		761	const char *s = MgPV_nolen_const (mg);
		762
		763	if (*s == '_')
		764	{
		765	SV **svp = 0;
		766
		767	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		768	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		769
		770	if (svp)
		771	{
		772	SV *old = *svp;
		773	*svp = newSVsv (sv);
		774	SvREFCNT_dec (old);
		775	return 0;
		776	}
		777	}
		778
		779	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		780	}
		781
590	static void	782	static void
591	setup_coro (pTHX_ struct coro *coro)	783	coro_setup (pTHX_ struct coro *coro)
592	{	784	{
593	/*	785	/*
594	* emulate part of the perl startup here.	786	* emulate part of the perl startup here.
595	*/	787	*/
596	coro_init_stacks (aTHX);	788	coro_init_stacks (aTHX);
597		789
		790	PL_runops = RUNOPS_DEFAULT;
598	PL_curcop = &PL_compiling;	791	PL_curcop = &PL_compiling;
599	PL_in_eval = EVAL_NULL;	792	PL_in_eval = EVAL_NULL;
600	PL_comppad = 0;	793	PL_comppad = 0;
601	PL_curpm = 0;	794	PL_curpm = 0;
		795	PL_curpad = 0;
602	PL_localizing = 0;	796	PL_localizing = 0;
603	PL_dirty = 0;	797	PL_dirty = 0;
604	PL_restartop = 0;	798	PL_restartop = 0;
		799	#if PERL_VERSION_ATLEAST (5,10,0)
		800	PL_parser = 0;
		801	#endif
		802
		803	/* recreate the die/warn hooks */
		804	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		805	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		806
		807	GvSV (PL_defgv) = newSV (0);
		808	GvAV (PL_defgv) = coro->args; coro->args = 0;
		809	GvSV (PL_errgv) = newSV (0);
		810	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		811	PL_rs = newSVsv (GvSV (irsgv));
		812	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
605		813
606	{	814	{
607	dSP;	815	dSP;
608	LOGOP myop;	816	LOGOP myop;
609		817
610	SvREFCNT_dec (GvAV (PL_defgv));
611	GvAV (PL_defgv) = coro->args; coro->args = 0;
612
613	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
614	myop.op_next = Nullop;	819	myop.op_next = Nullop;
615	myop.op_flags = OPf_WANT_VOID;	820	myop.op_flags = OPf_WANT_VOID;
616		821
617	PUSHMARK (SP);	822	PUSHMARK (SP);
618	XPUSHs (av_shift (GvAV (PL_defgv)));	823	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
619	PUTBACK;	824	PUTBACK;
620	PL_op = (OP *)&myop;	825	PL_op = (OP *)&myop;
621	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	826	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
622	SPAGAIN;	827	SPAGAIN;
623	}	828	}
624		829
625	ENTER; /* necessary e.g. for dounwind */	830	/* this newly created coroutine might be run on an existing cctx which most
		831	* likely was suspended in set_stacklevel, called from entersub.
		832	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		833	* so we ENTER here for symmetry
		834	*/
		835	ENTER;
		836	}
		837
		838	static void
		839	coro_destroy (pTHX_ struct coro *coro)
		840	{
		841	if (!IN_DESTRUCT)
		842	{
		843	/* restore all saved variables and stuff */
		844	LEAVE_SCOPE (0);
		845	assert (PL_tmps_floor == -1);
		846
		847	/* free all temporaries */
		848	FREETMPS;
		849	assert (PL_tmps_ix == -1);
		850
		851	/* unwind all extra stacks */
		852	POPSTACK_TO (PL_mainstack);
		853
		854	/* unwind main stack */
		855	dounwind (-1);
		856	}
		857
		858	SvREFCNT_dec (GvSV (PL_defgv));
		859	SvREFCNT_dec (GvAV (PL_defgv));
		860	SvREFCNT_dec (GvSV (PL_errgv));
		861	SvREFCNT_dec (PL_defoutgv);
		862	SvREFCNT_dec (PL_rs);
		863	SvREFCNT_dec (GvSV (irsgv));
		864
		865	SvREFCNT_dec (PL_diehook);
		866	SvREFCNT_dec (PL_warnhook);
		867
		868	SvREFCNT_dec (coro->saved_deffh);
		869	SvREFCNT_dec (coro->throw);
		870
		871	coro_destroy_stacks (aTHX);
626	}	872	}
627		873
628	static void	874	static void
629	free_coro_mortal (pTHX)	875	free_coro_mortal (pTHX)
630	{	876	{
631	if (coro_mortal)	877	if (expect_true (coro_mortal))
632	{	878	{
633	SvREFCNT_dec (coro_mortal);	879	SvREFCNT_dec (coro_mortal);
634	coro_mortal = 0;	880	coro_mortal = 0;
635	}	881	}
636	}	882	}
637		883
638	static int	884	static int
639	runops_coro (pTHX)	885	runops_trace (pTHX)
640	{	886	{
641	COP *oldcop = 0;	887	COP *oldcop = 0;
642	int oldcxix = -2;	888	int oldcxix = -2;
		889	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		890	coro_cctx *cctx = coro->cctx;
643		891
644	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	892	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
645	{	893	{
646	PERL_ASYNC_CHECK ();	894	PERL_ASYNC_CHECK ();
647		895
648	if (PL_op->op_type == OP_LEAVESUB)	896	if (cctx->flags & CC_TRACE_ALL)
649	{	897	{
650	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	898	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	{	899	{
692	runops_proc_t old_runops = PL_runops;	900	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		901	SV **bot, **top;
		902	AV *av = newAV (); /* return values */
		903	SV **cb;
693	dSP;	904	dSP;
		905
		906	GV *gv = CvGV (cx->blk_sub.cv);
		907	SV *fullname = sv_2mortal (newSV (0));
		908	if (isGV (gv))
		909	gv_efullname3 (fullname, gv, 0);
		910
		911	bot = PL_stack_base + cx->blk_oldsp + 1;
		912	top = cx->blk_gimme == G_ARRAY ? SP + 1
		913	: cx->blk_gimme == G_SCALAR ? bot + 1
		914	: bot;
		915
		916	av_extend (av, top - bot);
		917	while (bot < top)
		918	av_push (av, SvREFCNT_inc (*bot++));
		919
		920	PL_runops = RUNOPS_DEFAULT;
694	ENTER;	921	ENTER;
695	SAVETMPS;	922	SAVETMPS;
696	EXTEND (SP, 3);	923	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);	924	PUSHMARK (SP);
724	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	925	PUSHs (&PL_sv_no);
725	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	926	PUSHs (fullname);
		927	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
726	PUTBACK;	928	PUTBACK;
		929	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);	930	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
728	SPAGAIN;	931	SPAGAIN;
729	}
730
731	FREETMPS;	932	FREETMPS;
732	LEAVE;	933	LEAVE;
733	PL_runops = old_runops;	934	PL_runops = runops_trace;
		935	}
		936
		937	if (oldcop != PL_curcop)
		938	{
		939	oldcop = PL_curcop;
		940
		941	if (PL_curcop != &PL_compiling)
		942	{
		943	SV **cb;
		944
		945	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		946	{
		947	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		948
		949	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		950	{
		951	runops_proc_t old_runops = PL_runops;
		952	dSP;
		953	GV *gv = CvGV (cx->blk_sub.cv);
		954	SV *fullname = sv_2mortal (newSV (0));
		955
		956	if (isGV (gv))
		957	gv_efullname3 (fullname, gv, 0);
		958
		959	PL_runops = RUNOPS_DEFAULT;
		960	ENTER;
		961	SAVETMPS;
		962	EXTEND (SP, 3);
		963	PUSHMARK (SP);
		964	PUSHs (&PL_sv_yes);
		965	PUSHs (fullname);
		966	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		967	PUTBACK;
		968	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		969	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		970	SPAGAIN;
		971	FREETMPS;
		972	LEAVE;
		973	PL_runops = runops_trace;
		974	}
		975
		976	oldcxix = cxstack_ix;
		977	}
		978
		979	if (cctx->flags & CC_TRACE_LINE)
		980	{
		981	dSP;
		982
		983	PL_runops = RUNOPS_DEFAULT;
		984	ENTER;
		985	SAVETMPS;
		986	EXTEND (SP, 3);
		987	PL_runops = RUNOPS_DEFAULT;
		988	PUSHMARK (SP);
		989	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		990	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		991	PUTBACK;
		992	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		993	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		994	SPAGAIN;
		995	FREETMPS;
		996	LEAVE;
		997	PL_runops = runops_trace;
		998	}
		999	}
734	}	1000	}
735	}	1001	}
736	}	1002	}
737		1003
738	TAINT_NOT;	1004	TAINT_NOT;
…		…
741		1007
742	/* inject a fake call to Coro::State::_cctx_init into the execution */	1008	/* 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 */	1009	/* _cctx_init should be careful, as it could be called at almost any time */
744	/* during execution of a perl program */	1010	/* during execution of a perl program */
745	static void NOINLINE	1011	static void NOINLINE
746	prepare_cctx (pTHX_ coro_cctx *cctx)	1012	cctx_prepare (pTHX_ coro_cctx *cctx)
747	{	1013	{
748	dSP;	1014	dSP;
749	LOGOP myop;	1015	LOGOP myop;
750		1016
751	PL_top_env = &PL_start_env;	1017	PL_top_env = &PL_start_env;
752		1018
753	if (cctx->flags & CC_TRACE)	1019	if (cctx->flags & CC_TRACE)
754	PL_runops = runops_coro;	1020	PL_runops = runops_trace;
755		1021
756	Zero (&myop, 1, LOGOP);	1022	Zero (&myop, 1, LOGOP);
757	myop.op_next = PL_op;	1023	myop.op_next = PL_op;
758	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1024	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
759		1025
…		…
769		1035
770	/*	1036	/*
771	* this is a _very_ stripped down perl interpreter ;)	1037	* this is a _very_ stripped down perl interpreter ;)
772	*/	1038	*/
773	static void	1039	static void
774	coro_run (void *arg)	1040	cctx_run (void *arg)
775	{	1041	{
776	dTHX;	1042	dTHX;
777		1043
778	/* coro_run is the alternative tail of transfer(), so unlock here. */	1044	/* cctx_run is the alternative tail of transfer(), so unlock here. */
779	UNLOCK;	1045	UNLOCK;
780		1046
781	/* we now skip the entersub that lead to transfer() */	1047	/* we now skip the entersub that lead to transfer() */
782	PL_op = PL_op->op_next;	1048	PL_op = PL_op->op_next;
783		1049
784	/* inject a fake subroutine call to cctx_init */	1050	/* inject a fake subroutine call to cctx_init */
785	prepare_cctx (aTHX_ (coro_cctx *)arg);	1051	cctx_prepare (aTHX_ (coro_cctx *)arg);
786		1052
787	/* somebody or something will hit me for both perl_run and PL_restartop */	1053	/* somebody or something will hit me for both perl_run and PL_restartop */
788	PL_restartop = PL_op;	1054	PL_restartop = PL_op;
789	perl_run (PL_curinterp);	1055	perl_run (PL_curinterp);
790		1056
…		…
809	++cctx_count;	1075	++cctx_count;
810		1076
811	Newz (0, cctx, 1, coro_cctx);	1077	Newz (0, cctx, 1, coro_cctx);
812		1078
813	#if HAVE_MMAP	1079	#if HAVE_MMAP
814
815	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1080	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
816	/* mmap supposedly does allocate-on-write for us */	1081	/* 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);	1082	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
818		1083
819	if (cctx->sptr != (void *)-1)	1084	if (cctx->sptr != (void *)-1)
…		…
840	stack_start = cctx->sptr;	1105	stack_start = cctx->sptr;
841	stack_size = cctx->ssize;	1106	stack_size = cctx->ssize;
842	}	1107	}
843		1108
844	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1109	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
845	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1110	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
846		1111
847	return cctx;	1112	return cctx;
848	}	1113	}
849		1114
850	static void	1115	static void
…		…
867	Safefree (cctx->sptr);	1132	Safefree (cctx->sptr);
868		1133
869	Safefree (cctx);	1134	Safefree (cctx);
870	}	1135	}
871		1136
		1137	/* wether this cctx should be destructed */
		1138	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1139
872	static coro_cctx *	1140	static coro_cctx *
873	cctx_get (pTHX)	1141	cctx_get (pTHX)
874	{	1142	{
875	while (cctx_first)	1143	while (expect_true (cctx_first))
876	{	1144	{
877	coro_cctx *cctx = cctx_first;	1145	coro_cctx *cctx = cctx_first;
878	cctx_first = cctx->next;	1146	cctx_first = cctx->next;
879	--cctx_idle;	1147	--cctx_idle;
880		1148
881	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1149	if (expect_true (!CCTX_EXPIRED (cctx)))
882	return cctx;	1150	return cctx;
883		1151
884	cctx_destroy (cctx);	1152	cctx_destroy (cctx);
885	}	1153	}
886		1154
…		…
889		1157
890	static void	1158	static void
891	cctx_put (coro_cctx *cctx)	1159	cctx_put (coro_cctx *cctx)
892	{	1160	{
893	/* free another cctx if overlimit */	1161	/* free another cctx if overlimit */
894	if (cctx_idle >= MAX_IDLE_CCTX)	1162	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
895	{	1163	{
896	coro_cctx *first = cctx_first;	1164	coro_cctx *first = cctx_first;
897	cctx_first = first->next;	1165	cctx_first = first->next;
898	--cctx_idle;	1166	--cctx_idle;
899		1167
…		…
905	cctx_first = cctx;	1173	cctx_first = cctx;
906	}	1174	}
907		1175
908	/** coroutine switching *****************************************************/	1176	/** coroutine switching *****************************************************/
909		1177
910	/* never call directly, always through the coro_state_transfer global variable */	1178	static void
		1179	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1180	{
		1181	if (expect_true (prev != next))
		1182	{
		1183	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1184	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1185
		1186	if (expect_false (next->flags & CF_RUNNING))
		1187	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1188
		1189	if (expect_false (next->flags & CF_DESTROYED))
		1190	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1191
		1192	#if !PERL_VERSION_ATLEAST (5,10,0)
		1193	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1194	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1195	#endif
		1196	}
		1197	}
		1198
		1199	/* always use the TRANSFER macro */
911	static void NOINLINE	1200	static void NOINLINE
912	transfer (pTHX_ struct coro *prev, struct coro *next)	1201	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
913	{	1202	{
914	dSTACKLEVEL;	1203	dSTACKLEVEL;
		1204	static volatile int has_throw;
915		1205
916	/* sometimes transfer is only called to set idle_sp */	1206	/* sometimes transfer is only called to set idle_sp */
917	if (!next)	1207	if (expect_false (!next))
918	{	1208	{
919	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1209	((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 */	1210	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
921	}	1211	}
922	else if (prev != next)	1212	else if (expect_true (prev != next))
923	{	1213	{
924	coro_cctx *prev__cctx;	1214	coro_cctx *prev__cctx;
925		1215
926	if (prev->flags & CF_NEW)	1216	if (expect_false (prev->flags & CF_NEW))
927	{	1217	{
928	/* create a new empty context */	1218	/* create a new empty context */
929	Newz (0, prev->cctx, 1, coro_cctx);	1219	Newz (0, prev->cctx, 1, coro_cctx);
930	prev->flags &= ~CF_NEW;	1220	prev->flags &= ~CF_NEW;
931	prev->flags |= CF_RUNNING;	1221	prev->flags |= CF_RUNNING;
932	}	1222	}
933		1223
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;	1224	prev->flags &= ~CF_RUNNING;
945	next->flags |= CF_RUNNING;	1225	next->flags |= CF_RUNNING;
946		1226
947	LOCK;	1227	LOCK;
948		1228
		1229	/* first get rid of the old state */
		1230	save_perl (aTHX_ prev);
		1231
949	if (next->flags & CF_NEW)	1232	if (expect_false (next->flags & CF_NEW))
950	{	1233	{
951	/* need to start coroutine */	1234	/* need to start coroutine */
952	next->flags &= ~CF_NEW;	1235	next->flags &= ~CF_NEW;
953	/* first get rid of the old state */
954	save_perl (aTHX_ prev);
955	/* setup coroutine call */	1236	/* setup coroutine call */
956	setup_coro (aTHX_ next);	1237	coro_setup (aTHX_ next);
957	}	1238	}
958	else	1239	else
959	{
960	/* coroutine already started */
961	save_perl (aTHX_ prev);
962	load_perl (aTHX_ next);	1240	load_perl (aTHX_ next);
963	}
964		1241
965	prev__cctx = prev->cctx;	1242	prev__cctx = prev->cctx;
966		1243
967	/* possibly "free" the cctx */	1244	/* possibly "free" the cctx */
968	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1245	if (expect_true (
		1246	prev__cctx->idle_sp == STACKLEVEL
		1247	&& !(prev__cctx->flags & CC_TRACE)
		1248	&& !force_cctx
		1249	))
969	{	1250	{
970	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1251	/* 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));	1252	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
972		1253
973	prev->cctx = 0;	1254	prev->cctx = 0;
974		1255
		1256	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1257	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1258	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1259	if (!next->cctx)
		1260	next->cctx = cctx_get (aTHX);
		1261
975	cctx_put (prev__cctx);	1262	cctx_put (prev__cctx);
976	}	1263	}
977		1264
		1265	++next->usecount;
		1266
978	if (!next->cctx)	1267	if (expect_true (!next->cctx))
979	next->cctx = cctx_get (aTHX);	1268	next->cctx = cctx_get (aTHX);
980		1269
		1270	has_throw = !!next->throw;
		1271
981	if (prev__cctx != next->cctx)	1272	if (expect_false (prev__cctx != next->cctx))
982	{	1273	{
983	prev__cctx->top_env = PL_top_env;	1274	prev__cctx->top_env = PL_top_env;
984	PL_top_env = next->cctx->top_env;	1275	PL_top_env = next->cctx->top_env;
985	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1276	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
986	}	1277	}
987		1278
988	free_coro_mortal (aTHX);	1279	free_coro_mortal (aTHX);
989	UNLOCK;	1280	UNLOCK;
		1281
		1282	if (expect_false (has_throw))
		1283	{
		1284	struct coro *coro = SvSTATE (coro_current);
		1285
		1286	if (coro->throw)
		1287	{
		1288	SV *exception = coro->throw;
		1289	coro->throw = 0;
		1290	sv_setsv (ERRSV, exception);
		1291	croak (0);
		1292	}
		1293	}
990	}	1294	}
991	}	1295	}
992		1296
993	struct transfer_args	1297	struct transfer_args
994	{	1298	{
995	struct coro *prev, *next;	1299	struct coro *prev, *next;
996	};	1300	};
997		1301
		1302	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
998	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1303	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
999		1304
1000	/** high level stuff ********************************************************/	1305	/** high level stuff ********************************************************/
1001		1306
1002	static int	1307	static int
1003	coro_state_destroy (pTHX_ struct coro *coro)	1308	coro_state_destroy (pTHX_ struct coro *coro)
…		…
1020		1325
1021	if (coro->mainstack && coro->mainstack != main_mainstack)	1326	if (coro->mainstack && coro->mainstack != main_mainstack)
1022	{	1327	{
1023	struct coro temp;	1328	struct coro temp;
1024		1329
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)	1330	if (coro->flags & CF_RUNNING)
1031	croak ("FATAL: tried to destroy currently running coroutine");	1331	croak ("FATAL: tried to destroy currently running coroutine");
1032		1332
1033	save_perl (aTHX_ &temp);	1333	save_perl (aTHX_ &temp);
1034	load_perl (aTHX_ coro);	1334	load_perl (aTHX_ coro);
1035		1335
1036	coro_destroy_stacks (aTHX);	1336	coro_destroy (aTHX_ coro);
1037		1337
1038	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1338	load_perl (aTHX_ &temp);
1039		1339
1040	coro->mainstack = 0;	1340	coro->slot = 0;
1041	}	1341	}
1042		1342
1043	cctx_destroy (coro->cctx);	1343	cctx_destroy (coro->cctx);
1044	SvREFCNT_dec (coro->args);	1344	SvREFCNT_dec (coro->args);
1045		1345
…		…
1086	#else	1386	#else
1087	# define MGf_DUP 0	1387	# define MGf_DUP 0
1088	#endif	1388	#endif
1089	};	1389	};
1090		1390
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	1391	static void
1115	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1392	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1116	{	1393	{
1117	ta->prev = SvSTATE (prev_sv);	1394	ta->prev = SvSTATE (prev_sv);
1118	ta->next = SvSTATE (next_sv);	1395	ta->next = SvSTATE (next_sv);
		1396	TRANSFER_CHECK (*ta);
1119	}	1397	}
1120		1398
1121	static void	1399	static void
1122	api_transfer (SV *prev_sv, SV *next_sv)	1400	api_transfer (SV *prev_sv, SV *next_sv)
1123	{	1401	{
1124	dTHX;	1402	dTHX;
1125	struct transfer_args ta;	1403	struct transfer_args ta;
1126		1404
1127	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1405	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1128	TRANSFER (ta);	1406	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	}	1407	}
1143		1408
1144	/** Coro ********************************************************************/	1409	/** Coro ********************************************************************/
1145		1410
1146	static void	1411	static void
…		…
1148	{	1413	{
1149	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1414	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1150	}	1415	}
1151		1416
1152	static SV *	1417	static SV *
1153	coro_deq (pTHX_ int min_prio)	1418	coro_deq (pTHX)
1154	{	1419	{
1155	int prio = PRIO_MAX - PRIO_MIN;	1420	int prio;
1156		1421
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; )	1422	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1162	if (AvFILLp (coro_ready [prio]) >= 0)	1423	if (AvFILLp (coro_ready [prio]) >= 0)
1163	return av_shift (coro_ready [prio]);	1424	return av_shift (coro_ready [prio]);
1164		1425
1165	return 0;	1426	return 0;
1166	}	1427	}
…		…
1168	static int	1429	static int
1169	api_ready (SV *coro_sv)	1430	api_ready (SV *coro_sv)
1170	{	1431	{
1171	dTHX;	1432	dTHX;
1172	struct coro *coro;	1433	struct coro *coro;
		1434	SV *sv_hook;
		1435	void (*xs_hook)(void);
1173		1436
1174	if (SvROK (coro_sv))	1437	if (SvROK (coro_sv))
1175	coro_sv = SvRV (coro_sv);	1438	coro_sv = SvRV (coro_sv);
1176		1439
1177	coro = SvSTATE (coro_sv);	1440	coro = SvSTATE (coro_sv);
…		…
1180	return 0;	1443	return 0;
1181		1444
1182	coro->flags |= CF_READY;	1445	coro->flags |= CF_READY;
1183		1446
1184	LOCK;	1447	LOCK;
		1448
		1449	sv_hook = coro_nready ? 0 : coro_readyhook;
		1450	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1451
1185	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1452	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1186	++coro_nready;	1453	++coro_nready;
		1454
1187	UNLOCK;	1455	UNLOCK;
		1456
		1457	if (sv_hook)
		1458	{
		1459	dSP;
		1460
		1461	ENTER;
		1462	SAVETMPS;
		1463
		1464	PUSHMARK (SP);
		1465	PUTBACK;
		1466	call_sv (sv_hook, G_DISCARD);
		1467	SPAGAIN;
		1468
		1469	FREETMPS;
		1470	LEAVE;
		1471	}
		1472
		1473	if (xs_hook)
		1474	xs_hook ();
1188		1475
1189	return 1;	1476	return 1;
1190	}	1477	}
1191		1478
1192	static int	1479	static int
…		…
1202	SV *prev_sv, *next_sv;	1489	SV *prev_sv, *next_sv;
1203		1490
1204	for (;;)	1491	for (;;)
1205	{	1492	{
1206	LOCK;	1493	LOCK;
1207	next_sv = coro_deq (aTHX_ PRIO_MIN);	1494	next_sv = coro_deq (aTHX);
1208		1495
1209	/* nothing to schedule: call the idle handler */	1496	/* nothing to schedule: call the idle handler */
1210	if (!next_sv)	1497	if (expect_false (!next_sv))
1211	{	1498	{
1212	dSP;	1499	dSP;
1213	UNLOCK;	1500	UNLOCK;
1214		1501
1215	ENTER;	1502	ENTER;
1216	SAVETMPS;	1503	SAVETMPS;
1217		1504
1218	PUSHMARK (SP);	1505	PUSHMARK (SP);
1219	PUTBACK;	1506	PUTBACK;
1220	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1507	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1508	SPAGAIN;
1221		1509
1222	FREETMPS;	1510	FREETMPS;
1223	LEAVE;	1511	LEAVE;
1224	continue;	1512	continue;
1225	}	1513	}
1226		1514
1227	ta->next = SvSTATE (next_sv);	1515	ta->next = SvSTATE (next_sv);
1228		1516
1229	/* cannot transfer to destroyed coros, skip and look for next */	1517	/* cannot transfer to destroyed coros, skip and look for next */
1230	if (ta->next->flags & CF_DESTROYED)	1518	if (expect_false (ta->next->flags & CF_DESTROYED))
1231	{	1519	{
1232	UNLOCK;	1520	UNLOCK;
1233	SvREFCNT_dec (next_sv);	1521	SvREFCNT_dec (next_sv);
1234	/* coro_nready is already taken care of by destroy */	1522	/* coro_nready is already taken care of by destroy */
1235	continue;	1523	continue;
…		…
1240	break;	1528	break;
1241	}	1529	}
1242		1530
1243	/* free this only after the transfer */	1531	/* free this only after the transfer */
1244	prev_sv = SvRV (coro_current);	1532	prev_sv = SvRV (coro_current);
1245	SvRV_set (coro_current, next_sv);
1246	ta->prev = SvSTATE (prev_sv);	1533	ta->prev = SvSTATE (prev_sv);
1247		1534	TRANSFER_CHECK (*ta);
1248	assert (ta->next->flags & CF_READY);	1535	assert (ta->next->flags & CF_READY);
1249	ta->next->flags &= ~CF_READY;	1536	ta->next->flags &= ~CF_READY;
		1537	SvRV_set (coro_current, next_sv);
1250		1538
1251	LOCK;	1539	LOCK;
1252	free_coro_mortal (aTHX);	1540	free_coro_mortal (aTHX);
1253	coro_mortal = prev_sv;	1541	coro_mortal = prev_sv;
1254	UNLOCK;	1542	UNLOCK;
…		…
1280	{	1568	{
1281	dTHX;	1569	dTHX;
1282	struct transfer_args ta;	1570	struct transfer_args ta;
1283		1571
1284	prepare_schedule (aTHX_ &ta);	1572	prepare_schedule (aTHX_ &ta);
1285	TRANSFER (ta);	1573	TRANSFER (ta, 1);
1286	}	1574	}
1287		1575
1288	static int	1576	static int
1289	api_cede (void)	1577	api_cede (void)
1290	{	1578	{
1291	dTHX;	1579	dTHX;
1292	struct transfer_args ta;	1580	struct transfer_args ta;
1293		1581
1294	prepare_cede (aTHX_ &ta);	1582	prepare_cede (aTHX_ &ta);
1295		1583
1296	if (ta.prev != ta.next)	1584	if (expect_true (ta.prev != ta.next))
1297	{	1585	{
1298	TRANSFER (ta);	1586	TRANSFER (ta, 1);
1299	return 1;	1587	return 1;
1300	}	1588	}
1301	else	1589	else
1302	return 0;	1590	return 0;
1303	}	1591	}
…		…
1308	dTHX;	1596	dTHX;
1309	struct transfer_args ta;	1597	struct transfer_args ta;
1310		1598
1311	if (prepare_cede_notself (aTHX_ &ta))	1599	if (prepare_cede_notself (aTHX_ &ta))
1312	{	1600	{
1313	TRANSFER (ta);	1601	TRANSFER (ta, 1);
1314	return 1;	1602	return 1;
1315	}	1603	}
1316	else	1604	else
1317	return 0;	1605	return 0;
1318	}	1606	}
1319		1607
		1608	static void
		1609	api_trace (SV *coro_sv, int flags)
		1610	{
		1611	dTHX;
		1612	struct coro *coro = SvSTATE (coro_sv);
		1613
		1614	if (flags & CC_TRACE)
		1615	{
		1616	if (!coro->cctx)
		1617	coro->cctx = cctx_new ();
		1618	else if (!(coro->cctx->flags & CC_TRACE))
		1619	croak ("cannot enable tracing on coroutine with custom stack");
		1620
		1621	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1622	}
		1623	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1624	{
		1625	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1626
		1627	if (coro->flags & CF_RUNNING)
		1628	PL_runops = RUNOPS_DEFAULT;
		1629	else
		1630	coro->slot->runops = RUNOPS_DEFAULT;
		1631	}
		1632	}
		1633
		1634	static int
		1635	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1636	{
		1637	AV *padlist;
		1638	AV *av = (AV *)mg->mg_obj;
		1639
		1640	abort ();
		1641
		1642	return 0;
		1643	}
		1644
		1645	static MGVTBL coro_gensub_vtbl = {
		1646	0, 0, 0, 0,
		1647	coro_gensub_free
		1648	};
		1649
1320	MODULE = Coro::State PACKAGE = Coro::State	1650	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1321		1651
1322	PROTOTYPES: DISABLE	1652	PROTOTYPES: DISABLE
1323		1653
1324	BOOT:	1654	BOOT:
1325	{	1655	{
1326	#ifdef USE_ITHREADS	1656	#ifdef USE_ITHREADS
1327	MUTEX_INIT (&coro_mutex);	1657	MUTEX_INIT (&coro_mutex);
1328	#endif	1658	#endif
1329	BOOT_PAGESIZE;	1659	BOOT_PAGESIZE;
		1660
		1661	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1662	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1663
		1664	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1665	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1666	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1667
		1668	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1669	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1670	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1330		1671
1331	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1672	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1332		1673
1333	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1674	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1334	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1675	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1335	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));	1676	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1336	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));	1677	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1337		1678
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;	1679	main_mainstack = PL_mainstack;
1347	main_top_env = PL_top_env;	1680	main_top_env = PL_top_env;
1348		1681
1349	while (main_top_env->je_prev)	1682	while (main_top_env->je_prev)
1350	main_top_env = main_top_env->je_prev;	1683	main_top_env = main_top_env->je_prev;
1351		1684
1352	coroapi.ver = CORO_API_VERSION;	1685	coroapi.ver = CORO_API_VERSION;
		1686	coroapi.rev = CORO_API_REVISION;
1353	coroapi.transfer = api_transfer;	1687	coroapi.transfer = api_transfer;
1354		1688
1355	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1689	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1356	}	1690	}
1357		1691
1358	SV *	1692	SV *
1359	new (char *klass, ...)	1693	new (char *klass, ...)
1360	CODE:	1694	CODE:
1361	{	1695	{
1362	struct coro *coro;	1696	struct coro *coro;
		1697	MAGIC *mg;
1363	HV *hv;	1698	HV *hv;
1364	int i;	1699	int i;
1365		1700
1366	Newz (0, coro, 1, struct coro);	1701	Newz (0, coro, 1, struct coro);
1367	coro->args = newAV ();	1702	coro->args = newAV ();
1368	coro->save = CORO_SAVE_DEF;
1369	coro->flags = CF_NEW;	1703	coro->flags = CF_NEW;
1370		1704
1371	if (coro_first) coro_first->prev = coro;	1705	if (coro_first) coro_first->prev = coro;
1372	coro->next = coro_first;	1706	coro->next = coro_first;
1373	coro_first = coro;	1707	coro_first = coro;
1374		1708
1375	coro->hv = hv = newHV ();	1709	coro->hv = hv = newHV ();
1376	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1710	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1711	mg->mg_flags |= MGf_DUP;
1377	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1712	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1378		1713
		1714	av_extend (coro->args, items - 1);
1379	for (i = 1; i < items; i++)	1715	for (i = 1; i < items; i++)
1380	av_push (coro->args, newSVsv (ST (i)));	1716	av_push (coro->args, newSVsv (ST (i)));
1381	}	1717	}
1382	OUTPUT:	1718	OUTPUT:
1383	RETVAL	1719	RETVAL
1384		1720
1385	int	1721	# these not obviously related functions are all rolled into the same xs
1386	save (SV *coro, int new_save = -1)	1722	# function to increase chances that they all will call transfer with the same
1387	CODE:	1723	# 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	1724	void
1404	_set_stacklevel (...)	1725	_set_stacklevel (...)
1405	ALIAS:	1726	ALIAS:
1406	Coro::State::transfer = 1	1727	Coro::State::transfer = 1
1407	Coro::schedule = 2	1728	Coro::schedule = 2
…		…
1409	Coro::cede_notself = 4	1730	Coro::cede_notself = 4
1410	CODE:	1731	CODE:
1411	{	1732	{
1412	struct transfer_args ta;	1733	struct transfer_args ta;
1413		1734
		1735	PUTBACK;
1414	switch (ix)	1736	switch (ix)
1415	{	1737	{
1416	case 0:	1738	case 0:
1417	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1739	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1418	ta.next = 0;	1740	ta.next = 0;
…		…
1437	if (!prepare_cede_notself (aTHX_ &ta))	1759	if (!prepare_cede_notself (aTHX_ &ta))
1438	XSRETURN_EMPTY;	1760	XSRETURN_EMPTY;
1439		1761
1440	break;	1762	break;
1441	}	1763	}
		1764	SPAGAIN;
1442		1765
1443	BARRIER;	1766	BARRIER;
		1767	PUTBACK;
1444	TRANSFER (ta);	1768	TRANSFER (ta, 0);
1445		1769	SPAGAIN; /* might be the sp of a different coroutine now */
1446	if (GIMME_V != G_VOID && ta.next != ta.prev)	1770	/* be extra careful not to ever do anything after TRANSFER */
1447	XSRETURN_YES;
1448	}	1771	}
1449		1772
1450	bool	1773	bool
1451	_destroy (SV *coro_sv)	1774	_destroy (SV *coro_sv)
1452	CODE:	1775	CODE:
1453	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1776	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1454	OUTPUT:	1777	OUTPUT:
1455	RETVAL	1778	RETVAL
1456		1779
1457	void	1780	void
1458	_exit (code)	1781	_exit (int code)
1459	int code
1460	PROTOTYPE: $	1782	PROTOTYPE: $
1461	CODE:	1783	CODE:
1462	_exit (code);	1784	_exit (code);
1463		1785
1464	int	1786	int
…		…
1498	call (Coro::State coro, SV *coderef)	1820	call (Coro::State coro, SV *coderef)
1499	ALIAS:	1821	ALIAS:
1500	eval = 1	1822	eval = 1
1501	CODE:	1823	CODE:
1502	{	1824	{
1503	if (coro->mainstack)	1825	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1504	{	1826	{
1505	struct coro temp;	1827	struct coro temp;
1506	Zero (&temp, 1, struct coro);
1507	temp.save = CORO_SAVE_ALL;
1508		1828
1509	if (!(coro->flags & CF_RUNNING))	1829	if (!(coro->flags & CF_RUNNING))
1510	{	1830	{
		1831	PUTBACK;
1511	save_perl (aTHX_ &temp);	1832	save_perl (aTHX_ &temp);
1512	load_perl (aTHX_ coro);	1833	load_perl (aTHX_ coro);
1513	}	1834	}
1514		1835
1515	{	1836	{
1516	dSP;	1837	dSP;
1517	ENTER;	1838	ENTER;
1518	SAVETMPS;	1839	SAVETMPS;
		1840	PUTBACK;
		1841	PUSHSTACK;
1519	PUSHMARK (SP);	1842	PUSHMARK (SP);
1520	PUTBACK;	1843
1521	if (ix)	1844	if (ix)
1522	eval_sv (coderef, 0);	1845	eval_sv (coderef, 0);
1523	else	1846	else
1524	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1847	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1848
		1849	POPSTACK;
1525	SPAGAIN;	1850	SPAGAIN;
1526	FREETMPS;	1851	FREETMPS;
1527	LEAVE;	1852	LEAVE;
1528	PUTBACK;	1853	PUTBACK;
1529	}	1854	}
1530		1855
1531	if (!(coro->flags & CF_RUNNING))	1856	if (!(coro->flags & CF_RUNNING))
1532	{	1857	{
1533	save_perl (aTHX_ coro);	1858	save_perl (aTHX_ coro);
1534	load_perl (aTHX_ &temp);	1859	load_perl (aTHX_ &temp);
		1860	SPAGAIN;
1535	}	1861	}
1536	}	1862	}
1537	}	1863	}
1538		1864
1539	SV *	1865	SV *
1540	is_ready (Coro::State coro)	1866	is_ready (Coro::State coro)
1541	PROTOTYPE: $	1867	PROTOTYPE: $
1542	ALIAS:	1868	ALIAS:
1543	is_ready = CF_READY	1869	is_ready = CF_READY
…		…
1548	RETVAL = boolSV (coro->flags & ix);	1874	RETVAL = boolSV (coro->flags & ix);
1549	OUTPUT:	1875	OUTPUT:
1550	RETVAL	1876	RETVAL
1551		1877
1552	void	1878	void
1553	trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB)	1879	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		1880
1576	SV *	1881	SV *
1577	has_stack (Coro::State coro)	1882	has_cctx (Coro::State coro)
1578	PROTOTYPE: $	1883	PROTOTYPE: $
1579	CODE:	1884	CODE:
1580	RETVAL = boolSV (!!coro->cctx);	1885	RETVAL = boolSV (!!coro->cctx);
1581	OUTPUT:	1886	OUTPUT:
1582	RETVAL	1887	RETVAL
…		…
1590	RETVAL	1895	RETVAL
1591		1896
1592	IV	1897	IV
1593	rss (Coro::State coro)	1898	rss (Coro::State coro)
1594	PROTOTYPE: $	1899	PROTOTYPE: $
		1900	ALIAS:
		1901	usecount = 1
1595	CODE:	1902	CODE:
1596	RETVAL = coro_rss (coro);	1903	switch (ix)
		1904	{
		1905	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1906	case 1: RETVAL = coro->usecount; break;
		1907	}
1597	OUTPUT:	1908	OUTPUT:
1598	RETVAL	1909	RETVAL
1599		1910
		1911	void
		1912	force_cctx ()
		1913	CODE:
		1914	struct coro *coro = SvSTATE (coro_current);
		1915	coro->cctx->idle_sp = 0;
		1916
		1917	void
		1918	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1919	PROTOTYPE: $;$
		1920	CODE:
		1921	SvREFCNT_dec (self->throw);
		1922	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1923
		1924	void
		1925	swap_defsv (Coro::State self)
		1926	PROTOTYPE: $
		1927	ALIAS:
		1928	swap_defav = 1
		1929	CODE:
		1930	if (!self->slot)
		1931	croak ("cannot swap state with coroutine that has no saved state");
		1932	else
		1933	{
		1934	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1935	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		1936
		1937	SV *tmp = *src; *src = *dst; *dst = tmp;
		1938	}
1600		1939
1601	MODULE = Coro::State PACKAGE = Coro	1940	MODULE = Coro::State PACKAGE = Coro
1602		1941
1603	BOOT:	1942	BOOT:
1604	{	1943	{
1605	int i;	1944	int i;
1606		1945
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);	1946	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1947	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1948	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1610		1949
1611	coro_current = get_sv ("Coro::current", FALSE);	1950	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1612	SvREADONLY_on (coro_current);	1951	SvREADONLY_on (coro_current);
1613		1952
1614	coro_stash = gv_stashpv ("Coro", TRUE);	1953	coro_stash = gv_stashpv ("Coro", TRUE);
1615		1954
1616	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1955	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1617	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1956	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1618	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1957	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1619	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1958	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1622		1961
1623	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1962	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1624	coro_ready[i] = newAV ();	1963	coro_ready[i] = newAV ();
1625		1964
1626	{	1965	{
1627	SV *sv = perl_get_sv("Coro::API", 1);	1966	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1967	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1628		1968
1629	coroapi.schedule = api_schedule;	1969	coroapi.schedule = api_schedule;
1630	coroapi.save = api_save;
1631	coroapi.cede = api_cede;	1970	coroapi.cede = api_cede;
1632	coroapi.cede_notself = api_cede_notself;	1971	coroapi.cede_notself = api_cede_notself;
1633	coroapi.ready = api_ready;	1972	coroapi.ready = api_ready;
1634	coroapi.is_ready = api_is_ready;	1973	coroapi.is_ready = api_is_ready;
1635	coroapi.nready = &coro_nready;	1974	coroapi.nready = &coro_nready;
…		…
1645	_set_current (SV *current)	1984	_set_current (SV *current)
1646	PROTOTYPE: $	1985	PROTOTYPE: $
1647	CODE:	1986	CODE:
1648	SvREFCNT_dec (SvRV (coro_current));	1987	SvREFCNT_dec (SvRV (coro_current));
1649	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1988	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1989
		1990	void
		1991	_set_readyhook (SV *hook)
		1992	PROTOTYPE: $
		1993	CODE:
		1994	LOCK;
		1995	SvREFCNT_dec (coro_readyhook);
		1996	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1997	UNLOCK;
1650		1998
1651	int	1999	int
1652	prio (Coro::State coro, int newprio = 0)	2000	prio (Coro::State coro, int newprio = 0)
1653	ALIAS:	2001	ALIAS:
1654	nice = 1	2002	nice = 1
…		…
1689	# for async_pool speedup	2037	# for async_pool speedup
1690	void	2038	void
1691	_pool_1 (SV *cb)	2039	_pool_1 (SV *cb)
1692	CODE:	2040	CODE:
1693	{	2041	{
1694	int i, len;	2042	struct coro *coro = SvSTATE (coro_current);
1695	HV *hv = (HV *)SvRV (coro_current);	2043	HV *hv = (HV *)SvRV (coro_current);
1696	AV *defav = GvAV (PL_defgv);	2044	AV *defav = GvAV (PL_defgv);
1697	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2045	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1698	AV *invoke_av;	2046	AV *invoke_av;
		2047	int i, len;
1699		2048
1700	if (!invoke)	2049	if (!invoke)
		2050	{
		2051	SV *old = PL_diehook;
		2052	PL_diehook = 0;
		2053	SvREFCNT_dec (old);
1701	croak ("\3terminate\2\n");	2054	croak ("\3async_pool terminate\2\n");
		2055	}
		2056
		2057	SvREFCNT_dec (coro->saved_deffh);
		2058	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1702		2059
1703	hv_store (hv, "desc", sizeof ("desc") - 1,	2060	hv_store (hv, "desc", sizeof ("desc") - 1,
1704	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2061	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1705		2062
1706	invoke_av = (AV *)SvRV (invoke);	2063	invoke_av = (AV *)SvRV (invoke);
…		…
1724	{	2081	{
1725	struct coro *coro = SvSTATE (coro_current);	2082	struct coro *coro = SvSTATE (coro_current);
1726		2083
1727	sv_setsv (cb, &PL_sv_undef);	2084	sv_setsv (cb, &PL_sv_undef);
1728		2085
		2086	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2087	coro->saved_deffh = 0;
		2088
1729	if (coro_rss (coro) > SvIV (sv_pool_rss)	2089	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1730	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2090	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2091	{
		2092	SV *old = PL_diehook;
		2093	PL_diehook = 0;
		2094	SvREFCNT_dec (old);
1731	croak ("\3terminate\2\n");	2095	croak ("\3async_pool terminate\2\n");
		2096	}
1732		2097
1733	av_clear (GvAV (PL_defgv));	2098	av_clear (GvAV (PL_defgv));
1734	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2099	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1735	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2100	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1736	coro->save = CORO_SAVE_DEF;	2101
1737	coro->prio = 0;	2102	coro->prio = 0;
		2103
		2104	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2105	api_trace (coro_current, 0);
		2106
1738	av_push (av_async_pool, newSVsv (coro_current));	2107	av_push (av_async_pool, newSVsv (coro_current));
1739	}	2108	}
		2109
		2110	#if 0
		2111
		2112	void
		2113	_generator_call (...)
		2114	PROTOTYPE: @
		2115	PPCODE:
		2116	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2117	xxxx
		2118	abort ();
		2119
		2120	SV *
		2121	gensub (SV *sub, ...)
		2122	PROTOTYPE: &;@
		2123	CODE:
		2124	{
		2125	struct coro *coro;
		2126	MAGIC *mg;
		2127	CV *xcv;
		2128	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2129	int i;
		2130
		2131	CvGV (ncv) = CvGV (cv);
		2132	CvFILE (ncv) = CvFILE (cv);
		2133
		2134	Newz (0, coro, 1, struct coro);
		2135	coro->args = newAV ();
		2136	coro->flags = CF_NEW;
		2137
		2138	av_extend (coro->args, items - 1);
		2139	for (i = 1; i < items; i++)
		2140	av_push (coro->args, newSVsv (ST (i)));
		2141
		2142	CvISXSUB_on (ncv);
		2143	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2144
		2145	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2146
		2147	CvXSUB (ncv) = CvXSUB (xcv);
		2148	CvANON_on (ncv);
		2149
		2150	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2151	RETVAL = newRV_noinc ((SV *)ncv);
		2152	}
		2153	OUTPUT:
		2154	RETVAL
		2155
		2156	#endif
1740		2157
1741		2158
1742	MODULE = Coro::State PACKAGE = Coro::AIO	2159	MODULE = Coro::State PACKAGE = Coro::AIO
1743		2160
1744	SV *	2161	SV *
…		…
1771	PL_laststype = data->laststype;	2188	PL_laststype = data->laststype;
1772	PL_laststatval = data->laststatval;	2189	PL_laststatval = data->laststatval;
1773	PL_statcache = data->statcache;	2190	PL_statcache = data->statcache;
1774	}	2191	}
1775		2192
		2193
		2194	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2195
		2196	BOOT:
		2197	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2198
		2199	SV *
		2200	_schedule (...)
		2201	PROTOTYPE: @
		2202	CODE:
		2203	{
		2204	static int incede;
		2205
		2206	api_cede_notself ();
		2207
		2208	++incede;
		2209	while (coro_nready >= incede && api_cede ())
		2210	;
		2211
		2212	sv_setsv (sv_activity, &PL_sv_undef);
		2213	if (coro_nready >= incede)
		2214	{
		2215	PUSHMARK (SP);
		2216	PUTBACK;
		2217	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2218	SPAGAIN;
		2219	}
		2220
		2221	--incede;
		2222	}
		2223

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