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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC vs.
Revision 1.244 by root, Sun Sep 21 18:29:39 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 */
191		243	HV *hv; /* the perl hash associated with this coro, if any */
192	/* optionally saved, might be zero */
193	AV *defav; /* @_ */
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		244
204	/* statistics */	245	/* statistics */
205	int usecount; /* number of switches to this coro */	246	int usecount; /* number of transfers to this coro */
206		247
207	/* coro process data */	248	/* coro process data */
208	int prio;	249	int prio;
		250	SV *throw; /* exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
209		254
210	/* linked list */	255	/* linked list */
211	struct coro *next, *prev;	256	struct coro *next, *prev;
212	HV *hv; /* the perl hash associated with this coro, if any */
213	};	257	};
214		258
215	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
216	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
217		261
…		…
224	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
225	#define PRIO_MIN -4	269	#define PRIO_MIN -4
226		270
227	/* for Coro.pm */	271	/* for Coro.pm */
228	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
230	static int coro_nready;	275	static int coro_nready;
231	static struct coro *coro_first;	276	static struct coro *coro_first;
232		277
233	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
234		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
235	static AV *	310	static AV *
236	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
237	{	312	{
238	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
239	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
240		315
241	newpadlist = newAV ();	316	newpadlist = newAV ();
242	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
243	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
244	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
245	#else	320	#else
246	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
247	#endif	322	#endif
248	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
291	SvREFCNT_dec (av);	366	SvREFCNT_dec (av);
292		367
293	return 0;	368	return 0;
294	}	369	}
295		370
296	#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
297		373
298	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	};
299		378
300	#define CORO_MAGIC(cv) \	379	#define CORO_MAGIC(sv,type) \
301	SvMAGIC (cv) \	380	SvMAGIC (sv) \
302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	381	? SvMAGIC (sv)->mg_type == type \
303	? SvMAGIC (cv) \	382	? SvMAGIC (sv) \
304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	383	: mg_find (sv, type) \
305	: 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)
306		388
307	static struct coro *	389	static struct coro *
308	SvSTATE_ (pTHX_ SV *coro)	390	SvSTATE_ (pTHX_ SV *coro)
309	{	391	{
310	HV *stash;	392	HV *stash;
311	MAGIC *mg;	393	MAGIC *mg;
312		394
313	if (SvROK (coro))	395	if (SvROK (coro))
314	coro = SvRV (coro);	396	coro = SvRV (coro);
315		397
316	if (SvTYPE (coro) != SVt_PVHV)	398	if (expect_false (SvTYPE (coro) != SVt_PVHV))
317	croak ("Coro::State object required");	399	croak ("Coro::State object required");
318		400
319	stash = SvSTASH (coro);	401	stash = SvSTASH (coro);
320	if (stash != coro_stash && stash != coro_state_stash)	402	if (expect_false (stash != coro_stash && stash != coro_state_stash))
321	{	403	{
322	/* very slow, but rare, check */	404	/* very slow, but rare, check */
323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	405	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
324	croak ("Coro::State object required");	406	croak ("Coro::State object required");
325	}	407	}
326		408
327	mg = CORO_MAGIC (coro);	409	mg = CORO_MAGIC_state (coro);
328	return (struct coro *)mg->mg_ptr;	410	return (struct coro *)mg->mg_ptr;
329	}	411	}
330		412
331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	413	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
332		414
333	/* the next two functions merely cache the padlists */	415	/* the next two functions merely cache the padlists */
334	static void	416	static void
335	get_padlist (pTHX_ CV *cv)	417	get_padlist (pTHX_ CV *cv)
336	{	418	{
337	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC_cv (cv);
338	AV *av;	420	AV *av;
339		421
340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	422	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	423	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
342	else	424	else
343	{	425	{
344	#if CORO_PREFER_PERL_FUNCTIONS	426	#if CORO_PREFER_PERL_FUNCTIONS
345	/* this is probably cleaner, but also slower? */	427	/* this is probably cleaner? but also slower! */
		428	/* in practise, it seems to be less stable */
346	CV *cp = Perl_cv_clone (cv);	429	CV *cp = Perl_cv_clone (cv);
347	CvPADLIST (cv) = CvPADLIST (cp);	430	CvPADLIST (cv) = CvPADLIST (cp);
348	CvPADLIST (cp) = 0;	431	CvPADLIST (cp) = 0;
349	SvREFCNT_dec (cp);	432	SvREFCNT_dec (cp);
350	#else	433	#else
…		…
354	}	437	}
355		438
356	static void	439	static void
357	put_padlist (pTHX_ CV *cv)	440	put_padlist (pTHX_ CV *cv)
358	{	441	{
359	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
360	AV *av;	443	AV *av;
361		444
362	if (!mg)	445	if (expect_false (!mg))
363	{	446	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
366	mg->mg_virtual = &vtbl_coro;
367	mg->mg_obj = (SV *)newAV ();
368	}
369		447
370	av = (AV *)mg->mg_obj;	448	av = (AV *)mg->mg_obj;
371		449
372	if (AvFILLp (av) >= AvMAX (av))	450	if (expect_false (AvFILLp (av) >= AvMAX (av)))
373	av_extend (av, AvMAX (av) + 1);	451	av_extend (av, AvMAX (av) + 1);
374		452
375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	453	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
376	}	454	}
377		455
378	/** load & save, init *******************************************************/	456	/** load & save, init *******************************************************/
379
380	#define SB do {
381	#define SE } while (0)
382
383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
384		457
385	static void	458	static void
386	load_perl (pTHX_ Coro__State c)	459	load_perl (pTHX_ Coro__State c)
387	{	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
388	#define VAR(name,type) PL_ ## name = c->name;	471	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	472	# include "state.h"
390	#undef VAR	473	#undef VAR
391
392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
396
397	if (c->irssv)
398	{
399	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
400	{
401	SvREFCNT_dec (c->irssv);
402	c->irssv = 0;
403	}
404	else
405	{
406	REPLACE_SV (PL_rs, c->irssv);
407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
408	sv_setsv (c->irssv_sv, PL_rs);
409	}
410	}
411		474
412	{	475	{
413	dSP;	476	dSP;
		477
414	CV *cv;	478	CV *cv;
415		479
416	/* now do the ugly restore mess */	480	/* now do the ugly restore mess */
417	while ((cv = (CV *)POPs))	481	while (expect_true (cv = (CV *)POPs))
418	{	482	{
419	put_padlist (aTHX_ cv); /* mark this padlist as available */	483	put_padlist (aTHX_ cv); /* mark this padlist as available */
420	CvDEPTH (cv) = PTR2IV (POPs);	484	CvDEPTH (cv) = PTR2IV (POPs);
421	CvPADLIST (cv) = (AV *)POPs;	485	CvPADLIST (cv) = (AV *)POPs;
422	}	486	}
…		…
441		505
442	XPUSHs (Nullsv);	506	XPUSHs (Nullsv);
443	/* this loop was inspired by pp_caller */	507	/* this loop was inspired by pp_caller */
444	for (;;)	508	for (;;)
445	{	509	{
446	while (cxix >= 0)	510	while (expect_true (cxix >= 0))
447	{	511	{
448	PERL_CONTEXT *cx = &ccstk[cxix--];	512	PERL_CONTEXT *cx = &ccstk[cxix--];
449		513
450	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	514	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
451	{	515	{
452	CV *cv = cx->blk_sub.cv;	516	CV *cv = cx->blk_sub.cv;
453		517
454	if (CvDEPTH (cv))	518	if (expect_true (CvDEPTH (cv)))
455	{	519	{
456	EXTEND (SP, 3);	520	EXTEND (SP, 3);
457	PUSHs ((SV *)CvPADLIST (cv));	521	PUSHs ((SV *)CvPADLIST (cv));
458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	522	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
459	PUSHs ((SV *)cv);	523	PUSHs ((SV *)cv);
460		524
461	CvDEPTH (cv) = 0;	525	CvDEPTH (cv) = 0;
462	get_padlist (aTHX_ cv);	526	get_padlist (aTHX_ cv);
463	}	527	}
464	}	528	}
465	}	529	}
466		530
467	if (top_si->si_type == PERLSI_MAIN)	531	if (expect_true (top_si->si_type == PERLSI_MAIN))
468	break;	532	break;
469		533
470	top_si = top_si->si_prev;	534	top_si = top_si->si_prev;
471	ccstk = top_si->si_cxstack;	535	ccstk = top_si->si_cxstack;
472	cxix = top_si->si_cxix;	536	cxix = top_si->si_cxix;
473	}	537	}
474		538
475	PUTBACK;	539	PUTBACK;
476	}	540	}
477		541
478	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 */
479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	543	/* we manually unroll here, as usually 2 slots is enough */
480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	544	if (SLOT_COUNT >= 1) CXINC;
481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	545	if (SLOT_COUNT >= 2) CXINC;
482	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 */
483		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
484	#define VAR(name,type)c->name = PL_ ## name;	564	#define VAR(name,type) slot->name = PL_ ## name;
485	# include "state.h"	565	# include "state.h"
486	#undef VAR	566	#undef VAR
		567	}
487	}	568	}
488		569
489	/*	570	/*
490	* allocate various perl stacks. This is an exact copy	571	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	572	* of perl.c:init_stacks, except that it uses less memory
…		…
496	# define coro_init_stacks init_stacks	577	# define coro_init_stacks init_stacks
497	#else	578	#else
498	static void	579	static void
499	coro_init_stacks (pTHX)	580	coro_init_stacks (pTHX)
500	{	581	{
501	PL_curstackinfo = new_stackinfo(64, 6);	582	PL_curstackinfo = new_stackinfo(32, 8);
502	PL_curstackinfo->si_type = PERLSI_MAIN;	583	PL_curstackinfo->si_type = PERLSI_MAIN;
503	PL_curstack = PL_curstackinfo->si_stack;	584	PL_curstack = PL_curstackinfo->si_stack;
504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	585	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505		586
506	PL_stack_base = AvARRAY(PL_curstack);	587	PL_stack_base = AvARRAY(PL_curstack);
507	PL_stack_sp = PL_stack_base;	588	PL_stack_sp = PL_stack_base;
508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	589	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509		590
510	New(50,PL_tmps_stack,64,SV*);	591	New(50,PL_tmps_stack,32,SV*);
511	PL_tmps_floor = -1;	592	PL_tmps_floor = -1;
512	PL_tmps_ix = -1;	593	PL_tmps_ix = -1;
513	PL_tmps_max = 64;	594	PL_tmps_max = 32;
514		595
515	New(54,PL_markstack,16,I32);	596	New(54,PL_markstack,16,I32);
516	PL_markstack_ptr = PL_markstack;	597	PL_markstack_ptr = PL_markstack;
517	PL_markstack_max = PL_markstack + 16;	598	PL_markstack_max = PL_markstack + 16;
518		599
519	#ifdef SET_MARK_OFFSET	600	#ifdef SET_MARK_OFFSET
520	SET_MARK_OFFSET;	601	SET_MARK_OFFSET;
521	#endif	602	#endif
522		603
523	New(54,PL_scopestack,16,I32);	604	New(54,PL_scopestack,8,I32);
524	PL_scopestack_ix = 0;	605	PL_scopestack_ix = 0;
525	PL_scopestack_max = 16;	606	PL_scopestack_max = 8;
526		607
527	New(54,PL_savestack,64,ANY);	608	New(54,PL_savestack,24,ANY);
528	PL_savestack_ix = 0;	609	PL_savestack_ix = 0;
529	PL_savestack_max = 64;	610	PL_savestack_max = 24;
530		611
531	#if !PERL_VERSION_ATLEAST (5,9,0)	612	#if !PERL_VERSION_ATLEAST (5,10,0)
532	New(54,PL_retstack,4,OP*);	613	New(54,PL_retstack,4,OP*);
533	PL_retstack_ix = 0;	614	PL_retstack_ix = 0;
534	PL_retstack_max = 4;	615	PL_retstack_max = 4;
535	#endif	616	#endif
536	}	617	}
…		…
540	* destroy the stacks, the callchain etc...	621	* destroy the stacks, the callchain etc...
541	*/	622	*/
542	static void	623	static void
543	coro_destroy_stacks (pTHX)	624	coro_destroy_stacks (pTHX)
544	{	625	{
545	if (!IN_DESTRUCT)
546	{
547	/* restore all saved variables and stuff */
548	LEAVE_SCOPE (0);
549	assert (PL_tmps_floor == -1);
550
551	/* free all temporaries */
552	FREETMPS;
553	assert (PL_tmps_ix == -1);
554
555	/* unwind all extra stacks */
556	POPSTACK_TO (PL_mainstack);
557
558	/* unwind main stack */
559	dounwind (-1);
560	}
561
562	while (PL_curstackinfo->si_next)	626	while (PL_curstackinfo->si_next)
563	PL_curstackinfo = PL_curstackinfo->si_next;	627	PL_curstackinfo = PL_curstackinfo->si_next;
564		628
565	while (PL_curstackinfo)	629	while (PL_curstackinfo)
566	{	630	{
…		…
576		640
577	Safefree (PL_tmps_stack);	641	Safefree (PL_tmps_stack);
578	Safefree (PL_markstack);	642	Safefree (PL_markstack);
579	Safefree (PL_scopestack);	643	Safefree (PL_scopestack);
580	Safefree (PL_savestack);	644	Safefree (PL_savestack);
581	#if !PERL_VERSION_ATLEAST (5,9,0)	645	#if !PERL_VERSION_ATLEAST (5,10,0)
582	Safefree (PL_retstack);	646	Safefree (PL_retstack);
583	#endif	647	#endif
584	}	648	}
585		649
586	static size_t	650	static size_t
587	coro_rss (pTHX_ struct coro *coro)	651	coro_rss (pTHX_ struct coro *coro)
588	{	652	{
589	size_t rss = sizeof (coro);	653	size_t rss = sizeof (*coro);
590		654
591	if (coro->mainstack)	655	if (coro->mainstack)
592	{	656	{
		657	perl_slots tmp_slot;
		658	perl_slots *slot;
		659
593	if (coro->flags & CF_RUNNING)	660	if (coro->flags & CF_RUNNING)
594	{	661	{
		662	slot = &tmp_slot;
		663
595	#define VAR(name,type)coro->name = PL_ ## name;	664	#define VAR(name,type) slot->name = PL_ ## name;
596	# include "state.h"	665	# include "state.h"
597	#undef VAR	666	#undef VAR
598	}	667	}
		668	else
		669	slot = coro->slot;
599		670
600	rss += sizeof (coro->curstackinfo);	671	rss += sizeof (slot->curstackinfo);
601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	672	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	673	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
604	rss += coro->tmps_max * sizeof (SV *);	674	rss += slot->tmps_max * sizeof (SV *);
605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	675	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
606	rss += coro->scopestack_max * sizeof (I32);	676	rss += slot->scopestack_max * sizeof (I32);
607	rss += coro->savestack_max * sizeof (ANY);	677	rss += slot->savestack_max * sizeof (ANY);
608		678
609	#if !PERL_VERSION_ATLEAST (5,9,0)	679	#if !PERL_VERSION_ATLEAST (5,10,0)
610	rss += coro->retstack_max * sizeof (OP *);	680	rss += slot->retstack_max * sizeof (OP *);
611	#endif	681	#endif
612	}	682	}
613		683
614	return rss;	684	return rss;
615	}	685	}
616		686
617	/** coroutine stack handling ************************************************/	687	/** coroutine stack handling ************************************************/
618		688
		689	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		690	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		691	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		692
		693	/* apparently < 5.8.8 */
		694	#ifndef MgPV_nolen_const
		695	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		696	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		697	(const char*)(mg)->mg_ptr)
		698	#endif
		699
		700	/*
		701	* This overrides the default magic get method of %SIG elements.
		702	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		703	* and instead of tryign to save and restore the hash elements, we just provide
		704	* readback here.
		705	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		706	* not expecting this to actually change the hook. This is a potential problem
		707	* when a schedule happens then, but we ignore this.
		708	*/
		709	static int
		710	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		711	{
		712	const char *s = MgPV_nolen_const (mg);
		713
		714	if (*s == '_')
		715	{
		716	SV **svp = 0;
		717
		718	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		719	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		720
		721	if (svp)
		722	{
		723	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		724	return 0;
		725	}
		726	}
		727
		728	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		729	}
		730
		731	static int
		732	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		733	{
		734	const char *s = MgPV_nolen_const (mg);
		735
		736	if (*s == '_')
		737	{
		738	SV **svp = 0;
		739
		740	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		741	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		742
		743	if (svp)
		744	{
		745	SV *old = *svp;
		746	*svp = 0;
		747	SvREFCNT_dec (old);
		748	return 0;
		749	}
		750	}
		751
		752	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		753	}
		754
		755	static int
		756	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		757	{
		758	const char *s = MgPV_nolen_const (mg);
		759
		760	if (*s == '_')
		761	{
		762	SV **svp = 0;
		763
		764	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		765	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		766
		767	if (svp)
		768	{
		769	SV *old = *svp;
		770	*svp = newSVsv (sv);
		771	SvREFCNT_dec (old);
		772	return 0;
		773	}
		774	}
		775
		776	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		777	}
		778
619	static void	779	static void
620	setup_coro (pTHX_ struct coro *coro)	780	coro_setup (pTHX_ struct coro *coro)
621	{	781	{
622	/*	782	/*
623	* emulate part of the perl startup here.	783	* emulate part of the perl startup here.
624	*/	784	*/
625	coro_init_stacks (aTHX);	785	coro_init_stacks (aTHX);
…		…
627	PL_runops = RUNOPS_DEFAULT;	787	PL_runops = RUNOPS_DEFAULT;
628	PL_curcop = &PL_compiling;	788	PL_curcop = &PL_compiling;
629	PL_in_eval = EVAL_NULL;	789	PL_in_eval = EVAL_NULL;
630	PL_comppad = 0;	790	PL_comppad = 0;
631	PL_curpm = 0;	791	PL_curpm = 0;
		792	PL_curpad = 0;
632	PL_localizing = 0;	793	PL_localizing = 0;
633	PL_dirty = 0;	794	PL_dirty = 0;
634	PL_restartop = 0;	795	PL_restartop = 0;
		796	#if PERL_VERSION_ATLEAST (5,10,0)
		797	PL_parser = 0;
		798	#endif
		799
		800	/* recreate the die/warn hooks */
		801	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		802	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		803
		804	GvSV (PL_defgv) = newSV (0);
		805	GvAV (PL_defgv) = coro->args; coro->args = 0;
		806	GvSV (PL_errgv) = newSV (0);
		807	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		808	PL_rs = newSVsv (GvSV (irsgv));
		809	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
635		810
636	{	811	{
637	dSP;	812	dSP;
638	LOGOP myop;	813	LOGOP myop;
639		814
640	SvREFCNT_dec (GvAV (PL_defgv));
641	GvAV (PL_defgv) = coro->args; coro->args = 0;
642
643	Zero (&myop, 1, LOGOP);	815	Zero (&myop, 1, LOGOP);
644	myop.op_next = Nullop;	816	myop.op_next = Nullop;
645	myop.op_flags = OPf_WANT_VOID;	817	myop.op_flags = OPf_WANT_VOID;
646		818
647	PUSHMARK (SP);	819	PUSHMARK (SP);
648	XPUSHs (av_shift (GvAV (PL_defgv)));	820	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
649	PUTBACK;	821	PUTBACK;
650	PL_op = (OP *)&myop;	822	PL_op = (OP *)&myop;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	823	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;	824	SPAGAIN;
653	}	825	}
654		826
655	ENTER; /* necessary e.g. for dounwind */	827	/* this newly created coroutine might be run on an existing cctx which most
		828	* likely was suspended in set_stacklevel, called from entersub.
		829	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		830	* so we ENTER here for symmetry
		831	*/
		832	ENTER;
		833	}
		834
		835	static void
		836	coro_destroy (pTHX_ struct coro *coro)
		837	{
		838	if (!IN_DESTRUCT)
		839	{
		840	/* restore all saved variables and stuff */
		841	LEAVE_SCOPE (0);
		842	assert (PL_tmps_floor == -1);
		843
		844	/* free all temporaries */
		845	FREETMPS;
		846	assert (PL_tmps_ix == -1);
		847
		848	/* unwind all extra stacks */
		849	POPSTACK_TO (PL_mainstack);
		850
		851	/* unwind main stack */
		852	dounwind (-1);
		853	}
		854
		855	SvREFCNT_dec (GvSV (PL_defgv));
		856	SvREFCNT_dec (GvAV (PL_defgv));
		857	SvREFCNT_dec (GvSV (PL_errgv));
		858	SvREFCNT_dec (PL_defoutgv);
		859	SvREFCNT_dec (PL_rs);
		860	SvREFCNT_dec (GvSV (irsgv));
		861
		862	SvREFCNT_dec (PL_diehook);
		863	SvREFCNT_dec (PL_warnhook);
		864
		865	SvREFCNT_dec (coro->saved_deffh);
		866	SvREFCNT_dec (coro->throw);
		867
		868	coro_destroy_stacks (aTHX);
656	}	869	}
657		870
658	static void	871	static void
659	free_coro_mortal (pTHX)	872	free_coro_mortal (pTHX)
660	{	873	{
661	if (coro_mortal)	874	if (expect_true (coro_mortal))
662	{	875	{
663	SvREFCNT_dec (coro_mortal);	876	SvREFCNT_dec (coro_mortal);
664	coro_mortal = 0;	877	coro_mortal = 0;
665	}	878	}
666	}	879	}
…		…
675		888
676	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	889	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
677	{	890	{
678	PERL_ASYNC_CHECK ();	891	PERL_ASYNC_CHECK ();
679		892
680	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)	893	if (cctx->flags & CC_TRACE_ALL)
681	{	894	{
682	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	895	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
683	SV **bot, **top;
684	AV *av = newAV (); /* return values */
685	SV **cb;
686	runops_proc_t old_runops = PL_runops;
687	dSP;
688	ENTER;
689	SAVETMPS;
690	EXTEND (SP, 3);
691	PL_runops = RUNOPS_DEFAULT;
692
693	GV *gv = CvGV (cx->blk_sub.cv);
694	SV *fullname = sv_2mortal (newSV (0));
695	if (isGV (gv))
696	gv_efullname3 (fullname, gv, 0);
697
698	bot = PL_stack_base + cx->blk_oldsp + 1;
699	top = cx->blk_gimme == G_ARRAY ? SP + 1
700	: cx->blk_gimme == G_SCALAR ? bot + 1
701	: bot;
702
703	while (bot < top)
704	av_push (av, SvREFCNT_inc (*bot++));
705
706	PUSHMARK (SP);
707	PUSHs (&PL_sv_no);
708	PUSHs (fullname);
709	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
710	PUTBACK;
711	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
712	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
713	SPAGAIN;
714
715	FREETMPS;
716	LEAVE;
717	PL_runops = old_runops;
718	}
719
720	if (oldcop != PL_curcop)
721	{
722	oldcop = PL_curcop;
723
724	if (PL_curcop != &PL_compiling)
725	{	896	{
		897	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		898	SV **bot, **top;
		899	AV *av = newAV (); /* return values */
726	SV **cb;	900	SV **cb;
727	runops_proc_t old_runops = PL_runops;
728	dSP;	901	dSP;
		902
		903	GV *gv = CvGV (cx->blk_sub.cv);
		904	SV *fullname = sv_2mortal (newSV (0));
		905	if (isGV (gv))
		906	gv_efullname3 (fullname, gv, 0);
		907
		908	bot = PL_stack_base + cx->blk_oldsp + 1;
		909	top = cx->blk_gimme == G_ARRAY ? SP + 1
		910	: cx->blk_gimme == G_SCALAR ? bot + 1
		911	: bot;
		912
		913	av_extend (av, top - bot);
		914	while (bot < top)
		915	av_push (av, SvREFCNT_inc (*bot++));
		916
		917	PL_runops = RUNOPS_DEFAULT;
729	ENTER;	918	ENTER;
730	SAVETMPS;	919	SAVETMPS;
731	EXTEND (SP, 3);	920	EXTEND (SP, 3);
732	PL_runops = RUNOPS_DEFAULT;	921	PUSHMARK (SP);
		922	PUSHs (&PL_sv_no);
		923	PUSHs (fullname);
		924	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		925	PUTBACK;
		926	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		927	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		928	SPAGAIN;
		929	FREETMPS;
		930	LEAVE;
		931	PL_runops = runops_trace;
		932	}
733		933
734	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)	934	if (oldcop != PL_curcop)
		935	{
		936	oldcop = PL_curcop;
		937
		938	if (PL_curcop != &PL_compiling)
735	{	939	{
736	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	940	SV **cb;
737		941
738	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	942	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
739	{	943	{
		944	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		945
		946	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		947	{
		948	runops_proc_t old_runops = PL_runops;
		949	dSP;
740	GV *gv = CvGV (cx->blk_sub.cv);	950	GV *gv = CvGV (cx->blk_sub.cv);
741	SV *fullname = sv_2mortal (newSV (0));	951	SV *fullname = sv_2mortal (newSV (0));
		952
742	if (isGV (gv))	953	if (isGV (gv))
743	gv_efullname3 (fullname, gv, 0);	954	gv_efullname3 (fullname, gv, 0);
744		955
		956	PL_runops = RUNOPS_DEFAULT;
		957	ENTER;
		958	SAVETMPS;
		959	EXTEND (SP, 3);
		960	PUSHMARK (SP);
		961	PUSHs (&PL_sv_yes);
		962	PUSHs (fullname);
		963	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		964	PUTBACK;
		965	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		966	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		967	SPAGAIN;
		968	FREETMPS;
		969	LEAVE;
		970	PL_runops = runops_trace;
		971	}
		972
		973	oldcxix = cxstack_ix;
		974	}
		975
		976	if (cctx->flags & CC_TRACE_LINE)
		977	{
		978	dSP;
		979
		980	PL_runops = RUNOPS_DEFAULT;
		981	ENTER;
		982	SAVETMPS;
		983	EXTEND (SP, 3);
		984	PL_runops = RUNOPS_DEFAULT;
745	PUSHMARK (SP);	985	PUSHMARK (SP);
746	PUSHs (&PL_sv_yes);	986	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
747	PUSHs (fullname);	987	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
748	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
749	PUTBACK;	988	PUTBACK;
750	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	989	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
751	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	990	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
752	SPAGAIN;	991	SPAGAIN;
		992	FREETMPS;
		993	LEAVE;
		994	PL_runops = runops_trace;
753	}	995	}
754
755	oldcxix = cxstack_ix;
756	}	996	}
757
758	if (cctx->flags & CC_TRACE_LINE)
759	{
760	PUSHMARK (SP);
761	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
762	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
763	PUTBACK;
764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
765	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
766	SPAGAIN;
767	}
768
769	FREETMPS;
770	LEAVE;
771	PL_runops = old_runops;
772	}	997	}
773	}	998	}
774	}	999	}
775		1000
776	TAINT_NOT;	1001	TAINT_NOT;
…		…
779		1004
780	/* inject a fake call to Coro::State::_cctx_init into the execution */	1005	/* inject a fake call to Coro::State::_cctx_init into the execution */
781	/* _cctx_init should be careful, as it could be called at almost any time */	1006	/* _cctx_init should be careful, as it could be called at almost any time */
782	/* during execution of a perl program */	1007	/* during execution of a perl program */
783	static void NOINLINE	1008	static void NOINLINE
784	prepare_cctx (pTHX_ coro_cctx *cctx)	1009	cctx_prepare (pTHX_ coro_cctx *cctx)
785	{	1010	{
786	dSP;	1011	dSP;
787	LOGOP myop;	1012	LOGOP myop;
788		1013
789	PL_top_env = &PL_start_env;	1014	PL_top_env = &PL_start_env;
…		…
807		1032
808	/*	1033	/*
809	* this is a _very_ stripped down perl interpreter ;)	1034	* this is a _very_ stripped down perl interpreter ;)
810	*/	1035	*/
811	static void	1036	static void
812	coro_run (void *arg)	1037	cctx_run (void *arg)
813	{	1038	{
814	dTHX;	1039	dTHX;
815		1040
816	/* coro_run is the alternative tail of transfer(), so unlock here. */	1041	/* cctx_run is the alternative tail of transfer(), so unlock here. */
817	UNLOCK;	1042	UNLOCK;
818		1043
819	/* we now skip the entersub that lead to transfer() */	1044	/* we now skip the entersub that lead to transfer() */
820	PL_op = PL_op->op_next;	1045	PL_op = PL_op->op_next;
821		1046
822	/* inject a fake subroutine call to cctx_init */	1047	/* inject a fake subroutine call to cctx_init */
823	prepare_cctx (aTHX_ (coro_cctx *)arg);	1048	cctx_prepare (aTHX_ (coro_cctx *)arg);
824		1049
825	/* somebody or something will hit me for both perl_run and PL_restartop */	1050	/* somebody or something will hit me for both perl_run and PL_restartop */
826	PL_restartop = PL_op;	1051	PL_restartop = PL_op;
827	perl_run (PL_curinterp);	1052	perl_run (PL_curinterp);
828		1053
…		…
847	++cctx_count;	1072	++cctx_count;
848		1073
849	Newz (0, cctx, 1, coro_cctx);	1074	Newz (0, cctx, 1, coro_cctx);
850		1075
851	#if HAVE_MMAP	1076	#if HAVE_MMAP
852
853	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1077	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
854	/* mmap supposedly does allocate-on-write for us */	1078	/* mmap supposedly does allocate-on-write for us */
855	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1079	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
856		1080
857	if (cctx->sptr != (void *)-1)	1081	if (cctx->sptr != (void *)-1)
…		…
878	stack_start = cctx->sptr;	1102	stack_start = cctx->sptr;
879	stack_size = cctx->ssize;	1103	stack_size = cctx->ssize;
880	}	1104	}
881		1105
882	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1106	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
883	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1107	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
884		1108
885	return cctx;	1109	return cctx;
886	}	1110	}
887		1111
888	static void	1112	static void
…		…
905	Safefree (cctx->sptr);	1129	Safefree (cctx->sptr);
906		1130
907	Safefree (cctx);	1131	Safefree (cctx);
908	}	1132	}
909		1133
		1134	/* wether this cctx should be destructed */
		1135	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1136
910	static coro_cctx *	1137	static coro_cctx *
911	cctx_get (pTHX)	1138	cctx_get (pTHX)
912	{	1139	{
913	while (cctx_first)	1140	while (expect_true (cctx_first))
914	{	1141	{
915	coro_cctx *cctx = cctx_first;	1142	coro_cctx *cctx = cctx_first;
916	cctx_first = cctx->next;	1143	cctx_first = cctx->next;
917	--cctx_idle;	1144	--cctx_idle;
918		1145
919	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1146	if (expect_true (!CCTX_EXPIRED (cctx)))
920	return cctx;	1147	return cctx;
921		1148
922	cctx_destroy (cctx);	1149	cctx_destroy (cctx);
923	}	1150	}
924		1151
…		…
927		1154
928	static void	1155	static void
929	cctx_put (coro_cctx *cctx)	1156	cctx_put (coro_cctx *cctx)
930	{	1157	{
931	/* free another cctx if overlimit */	1158	/* free another cctx if overlimit */
932	if (cctx_idle >= MAX_IDLE_CCTX)	1159	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
933	{	1160	{
934	coro_cctx *first = cctx_first;	1161	coro_cctx *first = cctx_first;
935	cctx_first = first->next;	1162	cctx_first = first->next;
936	--cctx_idle;	1163	--cctx_idle;
937		1164
…		…
943	cctx_first = cctx;	1170	cctx_first = cctx;
944	}	1171	}
945		1172
946	/** coroutine switching *****************************************************/	1173	/** coroutine switching *****************************************************/
947		1174
948	static void NOINLINE	1175	static void
949	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1176	transfer_check (pTHX_ struct coro *prev, struct coro *next)
950	{	1177	{
951	if (prev != next)	1178	if (expect_true (prev != next))
952	{	1179	{
953	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1180	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
954	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1181	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
955		1182
956	if (next->flags & CF_RUNNING)	1183	if (expect_false (next->flags & CF_RUNNING))
957	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1184	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
958		1185
959	if (next->flags & CF_DESTROYED)	1186	if (expect_false (next->flags & CF_DESTROYED))
960	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1187	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
961		1188
		1189	#if !PERL_VERSION_ATLEAST (5,10,0)
962	if (PL_lex_state != LEX_NOTPARSING)	1190	if (expect_false (PL_lex_state != LEX_NOTPARSING))
963	croak ("Coro::State::transfer called while parsing, but this is not supported");	1191	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1192	#endif
964	}	1193	}
965	}	1194	}
966		1195
967	/* always use the TRANSFER macro */	1196	/* always use the TRANSFER macro */
968	static void NOINLINE	1197	static void NOINLINE
969	transfer (pTHX_ struct coro *prev, struct coro *next)	1198	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
970	{	1199	{
971	dSTACKLEVEL;	1200	dSTACKLEVEL;
		1201	static volatile int has_throw;
972		1202
973	/* sometimes transfer is only called to set idle_sp */	1203	/* sometimes transfer is only called to set idle_sp */
974	if (!next)	1204	if (expect_false (!next))
975	{	1205	{
976	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1206	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
977	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1207	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
978	}	1208	}
979	else if (prev != next)	1209	else if (expect_true (prev != next))
980	{	1210	{
981	coro_cctx *prev__cctx;	1211	coro_cctx *prev__cctx;
982		1212
983	if (prev->flags & CF_NEW)	1213	if (expect_false (prev->flags & CF_NEW))
984	{	1214	{
985	/* create a new empty context */	1215	/* create a new empty context */
986	Newz (0, prev->cctx, 1, coro_cctx);	1216	Newz (0, prev->cctx, 1, coro_cctx);
987	prev->flags &= ~CF_NEW;	1217	prev->flags &= ~CF_NEW;
988	prev->flags |= CF_RUNNING;	1218	prev->flags |= CF_RUNNING;
…		…
991	prev->flags &= ~CF_RUNNING;	1221	prev->flags &= ~CF_RUNNING;
992	next->flags |= CF_RUNNING;	1222	next->flags |= CF_RUNNING;
993		1223
994	LOCK;	1224	LOCK;
995		1225
		1226	/* first get rid of the old state */
		1227	save_perl (aTHX_ prev);
		1228
996	if (next->flags & CF_NEW)	1229	if (expect_false (next->flags & CF_NEW))
997	{	1230	{
998	/* need to start coroutine */	1231	/* need to start coroutine */
999	next->flags &= ~CF_NEW;	1232	next->flags &= ~CF_NEW;
1000	/* first get rid of the old state */
1001	save_perl (aTHX_ prev);
1002	/* setup coroutine call */	1233	/* setup coroutine call */
1003	setup_coro (aTHX_ next);	1234	coro_setup (aTHX_ next);
1004	}	1235	}
1005	else	1236	else
1006	{
1007	/* coroutine already started */
1008	save_perl (aTHX_ prev);
1009	load_perl (aTHX_ next);	1237	load_perl (aTHX_ next);
1010	}
1011		1238
1012	prev__cctx = prev->cctx;	1239	prev__cctx = prev->cctx;
1013		1240
1014	/* possibly "free" the cctx */	1241	/* possibly "free" the cctx */
1015	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1242	if (expect_true (
		1243	prev__cctx->idle_sp == STACKLEVEL
		1244	&& !(prev__cctx->flags & CC_TRACE)
		1245	&& !force_cctx
		1246	))
1016	{	1247	{
1017	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1248	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1018	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1249	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1019		1250
1020	prev->cctx = 0;	1251	prev->cctx = 0;
1021		1252
		1253	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1254	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1255	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1256	if (!next->cctx)
		1257	next->cctx = cctx_get (aTHX);
		1258
1022	cctx_put (prev__cctx);	1259	cctx_put (prev__cctx);
1023	}	1260	}
1024		1261
1025	++next->usecount;	1262	++next->usecount;
1026		1263
1027	if (!next->cctx)	1264	if (expect_true (!next->cctx))
1028	next->cctx = cctx_get (aTHX);	1265	next->cctx = cctx_get (aTHX);
1029		1266
		1267	has_throw = !!next->throw;
		1268
1030	if (prev__cctx != next->cctx)	1269	if (expect_false (prev__cctx != next->cctx))
1031	{	1270	{
1032	prev__cctx->top_env = PL_top_env;	1271	prev__cctx->top_env = PL_top_env;
1033	PL_top_env = next->cctx->top_env;	1272	PL_top_env = next->cctx->top_env;
1034	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1273	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1035	}	1274	}
1036		1275
1037	free_coro_mortal (aTHX);	1276	free_coro_mortal (aTHX);
1038	UNLOCK;	1277	UNLOCK;
		1278
		1279	if (expect_false (has_throw))
		1280	{
		1281	struct coro *coro = SvSTATE (coro_current);
		1282
		1283	if (coro->throw)
		1284	{
		1285	SV *exception = coro->throw;
		1286	coro->throw = 0;
		1287	sv_setsv (ERRSV, exception);
		1288	croak (0);
		1289	}
		1290	}
1039	}	1291	}
1040	}	1292	}
1041		1293
1042	struct transfer_args	1294	struct transfer_args
1043	{	1295	{
1044	struct coro *prev, *next;	1296	struct coro *prev, *next;
1045	};	1297	};
1046		1298
1047	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1299	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1048	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1300	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1049		1301
1050	/** high level stuff ********************************************************/	1302	/** high level stuff ********************************************************/
1051		1303
1052	static int	1304	static int
…		…
1070		1322
1071	if (coro->mainstack && coro->mainstack != main_mainstack)	1323	if (coro->mainstack && coro->mainstack != main_mainstack)
1072	{	1324	{
1073	struct coro temp;	1325	struct coro temp;
1074		1326
1075	assert (!(coro->flags & CF_RUNNING));
1076
1077	Zero (&temp, 1, struct coro);
1078	temp.save = CORO_SAVE_ALL;
1079
1080	if (coro->flags & CF_RUNNING)	1327	if (coro->flags & CF_RUNNING)
1081	croak ("FATAL: tried to destroy currently running coroutine");	1328	croak ("FATAL: tried to destroy currently running coroutine");
1082		1329
1083	save_perl (aTHX_ &temp);	1330	save_perl (aTHX_ &temp);
1084	load_perl (aTHX_ coro);	1331	load_perl (aTHX_ coro);
1085		1332
1086	coro_destroy_stacks (aTHX);	1333	coro_destroy (aTHX_ coro);
1087		1334
1088	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1335	load_perl (aTHX_ &temp);
1089		1336
1090	coro->mainstack = 0;	1337	coro->slot = 0;
1091	}	1338	}
1092		1339
1093	cctx_destroy (coro->cctx);	1340	cctx_destroy (coro->cctx);
1094	SvREFCNT_dec (coro->args);	1341	SvREFCNT_dec (coro->args);
1095		1342
…		…
1151	{	1398	{
1152	dTHX;	1399	dTHX;
1153	struct transfer_args ta;	1400	struct transfer_args ta;
1154		1401
1155	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1402	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1156	TRANSFER (ta);	1403	TRANSFER (ta, 1);
1157	}
1158
1159	static int
1160	api_save (SV *coro_sv, int new_save)
1161	{
1162	dTHX;
1163	struct coro *coro = SvSTATE (coro_sv);
1164	int old_save = coro->save;
1165
1166	if (new_save >= 0)
1167	coro->save = new_save;
1168
1169	return old_save;
1170	}	1404	}
1171		1405
1172	/** Coro ********************************************************************/	1406	/** Coro ********************************************************************/
1173		1407
1174	static void	1408	static void
…		…
1176	{	1410	{
1177	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1411	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1178	}	1412	}
1179		1413
1180	static SV *	1414	static SV *
1181	coro_deq (pTHX_ int min_prio)	1415	coro_deq (pTHX)
1182	{	1416	{
1183	int prio = PRIO_MAX - PRIO_MIN;	1417	int prio;
1184		1418
1185	min_prio -= PRIO_MIN;
1186	if (min_prio < 0)
1187	min_prio = 0;
1188
1189	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1419	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1190	if (AvFILLp (coro_ready [prio]) >= 0)	1420	if (AvFILLp (coro_ready [prio]) >= 0)
1191	return av_shift (coro_ready [prio]);	1421	return av_shift (coro_ready [prio]);
1192		1422
1193	return 0;	1423	return 0;
1194	}	1424	}
…		…
1196	static int	1426	static int
1197	api_ready (SV *coro_sv)	1427	api_ready (SV *coro_sv)
1198	{	1428	{
1199	dTHX;	1429	dTHX;
1200	struct coro *coro;	1430	struct coro *coro;
		1431	SV *sv_hook;
		1432	void (*xs_hook)(void);
1201		1433
1202	if (SvROK (coro_sv))	1434	if (SvROK (coro_sv))
1203	coro_sv = SvRV (coro_sv);	1435	coro_sv = SvRV (coro_sv);
1204		1436
1205	coro = SvSTATE (coro_sv);	1437	coro = SvSTATE (coro_sv);
…		…
1208	return 0;	1440	return 0;
1209		1441
1210	coro->flags |= CF_READY;	1442	coro->flags |= CF_READY;
1211		1443
1212	LOCK;	1444	LOCK;
		1445
		1446	sv_hook = coro_nready ? 0 : coro_readyhook;
		1447	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1448
1213	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1449	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1214	++coro_nready;	1450	++coro_nready;
		1451
1215	UNLOCK;	1452	UNLOCK;
		1453
		1454	if (sv_hook)
		1455	{
		1456	dSP;
		1457
		1458	ENTER;
		1459	SAVETMPS;
		1460
		1461	PUSHMARK (SP);
		1462	PUTBACK;
		1463	call_sv (sv_hook, G_DISCARD);
		1464	SPAGAIN;
		1465
		1466	FREETMPS;
		1467	LEAVE;
		1468	}
		1469
		1470	if (xs_hook)
		1471	xs_hook ();
1216		1472
1217	return 1;	1473	return 1;
1218	}	1474	}
1219		1475
1220	static int	1476	static int
…		…
1230	SV *prev_sv, *next_sv;	1486	SV *prev_sv, *next_sv;
1231		1487
1232	for (;;)	1488	for (;;)
1233	{	1489	{
1234	LOCK;	1490	LOCK;
1235	next_sv = coro_deq (aTHX_ PRIO_MIN);	1491	next_sv = coro_deq (aTHX);
1236		1492
1237	/* nothing to schedule: call the idle handler */	1493	/* nothing to schedule: call the idle handler */
1238	if (!next_sv)	1494	if (expect_false (!next_sv))
1239	{	1495	{
1240	dSP;	1496	dSP;
1241	UNLOCK;	1497	UNLOCK;
1242		1498
1243	ENTER;	1499	ENTER;
1244	SAVETMPS;	1500	SAVETMPS;
1245		1501
1246	PUSHMARK (SP);	1502	PUSHMARK (SP);
1247	PUTBACK;	1503	PUTBACK;
1248	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1504	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1505	SPAGAIN;
1249		1506
1250	FREETMPS;	1507	FREETMPS;
1251	LEAVE;	1508	LEAVE;
1252	continue;	1509	continue;
1253	}	1510	}
1254		1511
1255	ta->next = SvSTATE (next_sv);	1512	ta->next = SvSTATE (next_sv);
1256		1513
1257	/* cannot transfer to destroyed coros, skip and look for next */	1514	/* cannot transfer to destroyed coros, skip and look for next */
1258	if (ta->next->flags & CF_DESTROYED)	1515	if (expect_false (ta->next->flags & CF_DESTROYED))
1259	{	1516	{
1260	UNLOCK;	1517	UNLOCK;
1261	SvREFCNT_dec (next_sv);	1518	SvREFCNT_dec (next_sv);
1262	/* coro_nready is already taken care of by destroy */	1519	/* coro_nready is already taken care of by destroy */
1263	continue;	1520	continue;
…		…
1308	{	1565	{
1309	dTHX;	1566	dTHX;
1310	struct transfer_args ta;	1567	struct transfer_args ta;
1311		1568
1312	prepare_schedule (aTHX_ &ta);	1569	prepare_schedule (aTHX_ &ta);
1313	TRANSFER (ta);	1570	TRANSFER (ta, 1);
1314	}	1571	}
1315		1572
1316	static int	1573	static int
1317	api_cede (void)	1574	api_cede (void)
1318	{	1575	{
1319	dTHX;	1576	dTHX;
1320	struct transfer_args ta;	1577	struct transfer_args ta;
1321		1578
1322	prepare_cede (aTHX_ &ta);	1579	prepare_cede (aTHX_ &ta);
1323		1580
1324	if (ta.prev != ta.next)	1581	if (expect_true (ta.prev != ta.next))
1325	{	1582	{
1326	TRANSFER (ta);	1583	TRANSFER (ta, 1);
1327	return 1;	1584	return 1;
1328	}	1585	}
1329	else	1586	else
1330	return 0;	1587	return 0;
1331	}	1588	}
…		…
1336	dTHX;	1593	dTHX;
1337	struct transfer_args ta;	1594	struct transfer_args ta;
1338		1595
1339	if (prepare_cede_notself (aTHX_ &ta))	1596	if (prepare_cede_notself (aTHX_ &ta))
1340	{	1597	{
1341	TRANSFER (ta);	1598	TRANSFER (ta, 1);
1342	return 1;	1599	return 1;
1343	}	1600	}
1344	else	1601	else
1345	return 0;	1602	return 0;
1346	}	1603	}
1347		1604
		1605	static void
		1606	api_trace (SV *coro_sv, int flags)
		1607	{
		1608	dTHX;
		1609	struct coro *coro = SvSTATE (coro_sv);
		1610
		1611	if (flags & CC_TRACE)
		1612	{
		1613	if (!coro->cctx)
		1614	coro->cctx = cctx_new ();
		1615	else if (!(coro->cctx->flags & CC_TRACE))
		1616	croak ("cannot enable tracing on coroutine with custom stack");
		1617
		1618	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1619	}
		1620	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1621	{
		1622	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1623
		1624	if (coro->flags & CF_RUNNING)
		1625	PL_runops = RUNOPS_DEFAULT;
		1626	else
		1627	coro->slot->runops = RUNOPS_DEFAULT;
		1628	}
		1629	}
		1630
		1631	static int
		1632	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1633	{
		1634	AV *padlist;
		1635	AV *av = (AV *)mg->mg_obj;
		1636
		1637	abort ();
		1638
		1639	return 0;
		1640	}
		1641
		1642	static MGVTBL coro_gensub_vtbl = {
		1643	0, 0, 0, 0,
		1644	coro_gensub_free
		1645	};
		1646
1348	MODULE = Coro::State PACKAGE = Coro::State	1647	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1349		1648
1350	PROTOTYPES: DISABLE	1649	PROTOTYPES: DISABLE
1351		1650
1352	BOOT:	1651	BOOT:
1353	{	1652	{
1354	#ifdef USE_ITHREADS	1653	#ifdef USE_ITHREADS
1355	MUTEX_INIT (&coro_mutex);	1654	MUTEX_INIT (&coro_mutex);
1356	#endif	1655	#endif
1357	BOOT_PAGESIZE;	1656	BOOT_PAGESIZE;
		1657
		1658	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1659	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1660
		1661	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1662	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1663	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1664
		1665	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1666	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1667	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1358		1668
1359	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1669	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1360		1670
1361	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1671	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1362	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1672	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1363	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));	1673	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1364	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));	1674	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1365		1675
1366	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1367	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1368	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1369	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1370	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1371	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1372	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1373
1374	main_mainstack = PL_mainstack;	1676	main_mainstack = PL_mainstack;
1375	main_top_env = PL_top_env;	1677	main_top_env = PL_top_env;
1376		1678
1377	while (main_top_env->je_prev)	1679	while (main_top_env->je_prev)
1378	main_top_env = main_top_env->je_prev;	1680	main_top_env = main_top_env->je_prev;
1379		1681
1380	coroapi.ver = CORO_API_VERSION;	1682	coroapi.ver = CORO_API_VERSION;
		1683	coroapi.rev = CORO_API_REVISION;
1381	coroapi.transfer = api_transfer;	1684	coroapi.transfer = api_transfer;
1382		1685
1383	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1686	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1384	}	1687	}
1385		1688
1386	SV *	1689	SV *
1387	new (char *klass, ...)	1690	new (char *klass, ...)
1388	CODE:	1691	CODE:
1389	{	1692	{
1390	struct coro *coro;	1693	struct coro *coro;
		1694	MAGIC *mg;
1391	HV *hv;	1695	HV *hv;
1392	int i;	1696	int i;
1393		1697
1394	Newz (0, coro, 1, struct coro);	1698	Newz (0, coro, 1, struct coro);
1395	coro->args = newAV ();	1699	coro->args = newAV ();
1396	coro->save = CORO_SAVE_DEF;
1397	coro->flags = CF_NEW;	1700	coro->flags = CF_NEW;
1398		1701
1399	if (coro_first) coro_first->prev = coro;	1702	if (coro_first) coro_first->prev = coro;
1400	coro->next = coro_first;	1703	coro->next = coro_first;
1401	coro_first = coro;	1704	coro_first = coro;
1402		1705
1403	coro->hv = hv = newHV ();	1706	coro->hv = hv = newHV ();
1404	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1707	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1708	mg->mg_flags |= MGf_DUP;
1405	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1709	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1406		1710
		1711	av_extend (coro->args, items - 1);
1407	for (i = 1; i < items; i++)	1712	for (i = 1; i < items; i++)
1408	av_push (coro->args, newSVsv (ST (i)));	1713	av_push (coro->args, newSVsv (ST (i)));
1409	}	1714	}
1410	OUTPUT:	1715	OUTPUT:
1411	RETVAL	1716	RETVAL
1412		1717
1413	int	1718	# these not obviously related functions are all rolled into the same xs
1414	save (SV *coro, int new_save = -1)	1719	# function to increase chances that they all will call transfer with the same
1415	CODE:	1720	# stack offset
1416	RETVAL = api_save (coro, new_save);
1417	OUTPUT:
1418	RETVAL
1419
1420	int
1421	save_also (SV *coro_sv, int save_also)
1422	CODE:
1423	{
1424	struct coro *coro = SvSTATE (coro_sv);
1425	RETVAL = coro->save;
1426	coro->save |= save_also;
1427	}
1428	OUTPUT:
1429	RETVAL
1430
1431	void	1721	void
1432	_set_stacklevel (...)	1722	_set_stacklevel (...)
1433	ALIAS:	1723	ALIAS:
1434	Coro::State::transfer = 1	1724	Coro::State::transfer = 1
1435	Coro::schedule = 2	1725	Coro::schedule = 2
…		…
1437	Coro::cede_notself = 4	1727	Coro::cede_notself = 4
1438	CODE:	1728	CODE:
1439	{	1729	{
1440	struct transfer_args ta;	1730	struct transfer_args ta;
1441		1731
		1732	PUTBACK;
1442	switch (ix)	1733	switch (ix)
1443	{	1734	{
1444	case 0:	1735	case 0:
1445	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1736	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1446	ta.next = 0;	1737	ta.next = 0;
…		…
1465	if (!prepare_cede_notself (aTHX_ &ta))	1756	if (!prepare_cede_notself (aTHX_ &ta))
1466	XSRETURN_EMPTY;	1757	XSRETURN_EMPTY;
1467		1758
1468	break;	1759	break;
1469	}	1760	}
		1761	SPAGAIN;
1470		1762
1471	BARRIER;	1763	BARRIER;
		1764	PUTBACK;
1472	TRANSFER (ta);	1765	TRANSFER (ta, 0);
1473		1766	SPAGAIN; /* might be the sp of a different coroutine now */
1474	if (GIMME_V != G_VOID && ta.next != ta.prev)	1767	/* be extra careful not to ever do anything after TRANSFER */
1475	XSRETURN_YES;
1476	}	1768	}
1477		1769
1478	bool	1770	bool
1479	_destroy (SV *coro_sv)	1771	_destroy (SV *coro_sv)
1480	CODE:	1772	CODE:
1481	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1773	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1482	OUTPUT:	1774	OUTPUT:
1483	RETVAL	1775	RETVAL
1484		1776
1485	void	1777	void
1486	_exit (code)	1778	_exit (int code)
1487	int code
1488	PROTOTYPE: $	1779	PROTOTYPE: $
1489	CODE:	1780	CODE:
1490	_exit (code);	1781	_exit (code);
1491		1782
1492	int	1783	int
…		…
1529	CODE:	1820	CODE:
1530	{	1821	{
1531	if (coro->mainstack)	1822	if (coro->mainstack)
1532	{	1823	{
1533	struct coro temp;	1824	struct coro temp;
1534	Zero (&temp, 1, struct coro);
1535	temp.save = CORO_SAVE_ALL;
1536		1825
1537	if (!(coro->flags & CF_RUNNING))	1826	if (!(coro->flags & CF_RUNNING))
1538	{	1827	{
		1828	PUTBACK;
1539	save_perl (aTHX_ &temp);	1829	save_perl (aTHX_ &temp);
1540	load_perl (aTHX_ coro);	1830	load_perl (aTHX_ coro);
1541	}	1831	}
1542		1832
1543	{	1833	{
1544	dSP;	1834	dSP;
1545	ENTER;	1835	ENTER;
1546	SAVETMPS;	1836	SAVETMPS;
		1837	PUTBACK;
		1838	PUSHSTACK;
1547	PUSHMARK (SP);	1839	PUSHMARK (SP);
1548	PUTBACK;	1840
1549	if (ix)	1841	if (ix)
1550	eval_sv (coderef, 0);	1842	eval_sv (coderef, 0);
1551	else	1843	else
1552	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1844	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1845
		1846	POPSTACK;
1553	SPAGAIN;	1847	SPAGAIN;
1554	FREETMPS;	1848	FREETMPS;
1555	LEAVE;	1849	LEAVE;
1556	PUTBACK;	1850	PUTBACK;
1557	}	1851	}
1558		1852
1559	if (!(coro->flags & CF_RUNNING))	1853	if (!(coro->flags & CF_RUNNING))
1560	{	1854	{
1561	save_perl (aTHX_ coro);	1855	save_perl (aTHX_ coro);
1562	load_perl (aTHX_ &temp);	1856	load_perl (aTHX_ &temp);
		1857	SPAGAIN;
1563	}	1858	}
1564	}	1859	}
1565	}	1860	}
1566		1861
1567	SV *	1862	SV *
…		…
1576	RETVAL = boolSV (coro->flags & ix);	1871	RETVAL = boolSV (coro->flags & ix);
1577	OUTPUT:	1872	OUTPUT:
1578	RETVAL	1873	RETVAL
1579		1874
1580	void	1875	void
1581	trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB)	1876	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1582	CODE:
1583	if (flags & CC_TRACE)
1584	{
1585	if (!coro->cctx)
1586	coro->cctx = cctx_new ();
1587	else if (!(coro->cctx->flags & CC_TRACE))
1588	croak ("cannot enable tracing on coroutine with custom stack");
1589
1590	coro->cctx->flags |= flags & (CC_TRACE | CC_TRACE_ALL);
1591	}
1592	else
1593	if (coro->cctx && coro->cctx->flags & CC_TRACE)
1594	{
1595	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1596	coro->cctx->flags |= CC_NOREUSE;
1597
1598	if (coro->flags & CF_RUNNING)
1599	PL_runops = RUNOPS_DEFAULT;
1600	else
1601	coro->runops = RUNOPS_DEFAULT;
1602	}
1603		1877
1604	SV *	1878	SV *
1605	has_stack (Coro::State coro)	1879	has_cctx (Coro::State coro)
1606	PROTOTYPE: $	1880	PROTOTYPE: $
1607	CODE:	1881	CODE:
1608	RETVAL = boolSV (!!coro->cctx);	1882	RETVAL = boolSV (!!coro->cctx);
1609	OUTPUT:	1883	OUTPUT:
1610	RETVAL	1884	RETVAL
…		…
1629	case 1: RETVAL = coro->usecount; break;	1903	case 1: RETVAL = coro->usecount; break;
1630	}	1904	}
1631	OUTPUT:	1905	OUTPUT:
1632	RETVAL	1906	RETVAL
1633		1907
		1908	void
		1909	force_cctx ()
		1910	CODE:
		1911	struct coro *coro = SvSTATE (coro_current);
		1912	coro->cctx->idle_sp = 0;
		1913
		1914	void
		1915	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1916	PROTOTYPE: $;$
		1917	CODE:
		1918	SvREFCNT_dec (self->throw);
		1919	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1920
		1921	void
		1922	swap_defsv (Coro::State self)
		1923	PROTOTYPE: $
		1924	ALIAS:
		1925	swap_defav = 1
		1926	CODE:
		1927	if (!self->slot)
		1928	croak ("cannot swap state with coroutine that has no saved state");
		1929	else
		1930	{
		1931	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1932	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		1933
		1934	SV *tmp = *src; *src = *dst; *dst = tmp;
		1935	}
1634		1936
1635	MODULE = Coro::State PACKAGE = Coro	1937	MODULE = Coro::State PACKAGE = Coro
1636		1938
1637	BOOT:	1939	BOOT:
1638	{	1940	{
1639	int i;	1941	int i;
1640		1942
1641	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1642	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1643	av_async_pool = get_av ("Coro::async_pool", TRUE);	1943	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1944	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1945	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1644		1946
1645	coro_current = get_sv ("Coro::current", FALSE);	1947	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1646	SvREADONLY_on (coro_current);	1948	SvREADONLY_on (coro_current);
1647		1949
1648	coro_stash = gv_stashpv ("Coro", TRUE);	1950	coro_stash = gv_stashpv ("Coro", TRUE);
1649		1951
1650	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1952	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1651	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1953	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1652	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1954	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1653	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1955	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1656		1958
1657	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1959	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1658	coro_ready[i] = newAV ();	1960	coro_ready[i] = newAV ();
1659		1961
1660	{	1962	{
1661	SV *sv = perl_get_sv("Coro::API", 1);	1963	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1964	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1662		1965
1663	coroapi.schedule = api_schedule;	1966	coroapi.schedule = api_schedule;
1664	coroapi.save = api_save;
1665	coroapi.cede = api_cede;	1967	coroapi.cede = api_cede;
1666	coroapi.cede_notself = api_cede_notself;	1968	coroapi.cede_notself = api_cede_notself;
1667	coroapi.ready = api_ready;	1969	coroapi.ready = api_ready;
1668	coroapi.is_ready = api_is_ready;	1970	coroapi.is_ready = api_is_ready;
1669	coroapi.nready = &coro_nready;	1971	coroapi.nready = &coro_nready;
…		…
1679	_set_current (SV *current)	1981	_set_current (SV *current)
1680	PROTOTYPE: $	1982	PROTOTYPE: $
1681	CODE:	1983	CODE:
1682	SvREFCNT_dec (SvRV (coro_current));	1984	SvREFCNT_dec (SvRV (coro_current));
1683	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1985	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1986
		1987	void
		1988	_set_readyhook (SV *hook)
		1989	PROTOTYPE: $
		1990	CODE:
		1991	LOCK;
		1992	SvREFCNT_dec (coro_readyhook);
		1993	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1994	UNLOCK;
1684		1995
1685	int	1996	int
1686	prio (Coro::State coro, int newprio = 0)	1997	prio (Coro::State coro, int newprio = 0)
1687	ALIAS:	1998	ALIAS:
1688	nice = 1	1999	nice = 1
…		…
1723	# for async_pool speedup	2034	# for async_pool speedup
1724	void	2035	void
1725	_pool_1 (SV *cb)	2036	_pool_1 (SV *cb)
1726	CODE:	2037	CODE:
1727	{	2038	{
1728	int i, len;	2039	struct coro *coro = SvSTATE (coro_current);
1729	HV *hv = (HV *)SvRV (coro_current);	2040	HV *hv = (HV *)SvRV (coro_current);
1730	AV *defav = GvAV (PL_defgv);	2041	AV *defav = GvAV (PL_defgv);
1731	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2042	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1732	AV *invoke_av;	2043	AV *invoke_av;
		2044	int i, len;
1733		2045
1734	if (!invoke)	2046	if (!invoke)
		2047	{
		2048	SV *old = PL_diehook;
		2049	PL_diehook = 0;
		2050	SvREFCNT_dec (old);
1735	croak ("\3terminate\2\n");	2051	croak ("\3async_pool terminate\2\n");
		2052	}
		2053
		2054	SvREFCNT_dec (coro->saved_deffh);
		2055	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1736		2056
1737	hv_store (hv, "desc", sizeof ("desc") - 1,	2057	hv_store (hv, "desc", sizeof ("desc") - 1,
1738	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2058	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1739		2059
1740	invoke_av = (AV *)SvRV (invoke);	2060	invoke_av = (AV *)SvRV (invoke);
…		…
1758	{	2078	{
1759	struct coro *coro = SvSTATE (coro_current);	2079	struct coro *coro = SvSTATE (coro_current);
1760		2080
1761	sv_setsv (cb, &PL_sv_undef);	2081	sv_setsv (cb, &PL_sv_undef);
1762		2082
		2083	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2084	coro->saved_deffh = 0;
		2085
1763	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2086	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1764	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2087	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2088	{
		2089	SV *old = PL_diehook;
		2090	PL_diehook = 0;
		2091	SvREFCNT_dec (old);
1765	croak ("\3terminate\2\n");	2092	croak ("\3async_pool terminate\2\n");
		2093	}
1766		2094
1767	av_clear (GvAV (PL_defgv));	2095	av_clear (GvAV (PL_defgv));
1768	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2096	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1769	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2097	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1770	coro->save = CORO_SAVE_DEF;	2098
1771	coro->prio = 0;	2099	coro->prio = 0;
		2100
		2101	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2102	api_trace (coro_current, 0);
		2103
1772	av_push (av_async_pool, newSVsv (coro_current));	2104	av_push (av_async_pool, newSVsv (coro_current));
1773	}	2105	}
		2106
		2107	#if 0
		2108
		2109	void
		2110	_generator_call (...)
		2111	PROTOTYPE: @
		2112	PPCODE:
		2113	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2114	xxxx
		2115	abort ();
		2116
		2117	SV *
		2118	gensub (SV *sub, ...)
		2119	PROTOTYPE: &;@
		2120	CODE:
		2121	{
		2122	struct coro *coro;
		2123	MAGIC *mg;
		2124	CV *xcv;
		2125	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2126	int i;
		2127
		2128	CvGV (ncv) = CvGV (cv);
		2129	CvFILE (ncv) = CvFILE (cv);
		2130
		2131	Newz (0, coro, 1, struct coro);
		2132	coro->args = newAV ();
		2133	coro->flags = CF_NEW;
		2134
		2135	av_extend (coro->args, items - 1);
		2136	for (i = 1; i < items; i++)
		2137	av_push (coro->args, newSVsv (ST (i)));
		2138
		2139	CvISXSUB_on (ncv);
		2140	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2141
		2142	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2143
		2144	CvXSUB (ncv) = CvXSUB (xcv);
		2145	CvANON_on (ncv);
		2146
		2147	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2148	RETVAL = newRV_noinc ((SV *)ncv);
		2149	}
		2150	OUTPUT:
		2151	RETVAL
		2152
		2153	#endif
1774		2154
1775		2155
1776	MODULE = Coro::State PACKAGE = Coro::AIO	2156	MODULE = Coro::State PACKAGE = Coro::AIO
1777		2157
1778	SV *	2158	SV *
…		…
1805	PL_laststype = data->laststype;	2185	PL_laststype = data->laststype;
1806	PL_laststatval = data->laststatval;	2186	PL_laststatval = data->laststatval;
1807	PL_statcache = data->statcache;	2187	PL_statcache = data->statcache;
1808	}	2188	}
1809		2189
		2190
		2191	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2192
		2193	BOOT:
		2194	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2195
		2196	SV *
		2197	_schedule (...)
		2198	PROTOTYPE: @
		2199	CODE:
		2200	{
		2201	static int incede;
		2202
		2203	api_cede_notself ();
		2204
		2205	++incede;
		2206	while (coro_nready >= incede && api_cede ())
		2207	;
		2208
		2209	sv_setsv (sv_activity, &PL_sv_undef);
		2210	if (coro_nready >= incede)
		2211	{
		2212	PUSHMARK (SP);
		2213	PUTBACK;
		2214	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2215	SPAGAIN;
		2216	}
		2217
		2218	--incede;
		2219	}
		2220

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