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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.157 by root, Fri Sep 21 02:01:13 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
…		…
88	/* prefer perl internal functions over our own? */	111	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	112	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	113	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	114	#endif
92		115
93	/* The next macro should declare a variable stacklevel that contains and approximation	116	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	117	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	118	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	119	#define STACKLEVEL ((void *)&stacklevel)
98		120
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		122
101	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	127	#else
105	# define attribute(x)	128	# define attribute(x)
106	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
107	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
108		135
109	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
110		137
111	#include "CoroAPI.h"	138	#include "CoroAPI.h"
112		139
…		…
131	static size_t coro_stacksize = CORO_STACKSIZE;	158	static size_t coro_stacksize = CORO_STACKSIZE;
132	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
133	static AV *main_mainstack; /* used to differentiate between $main and others */	160	static AV *main_mainstack; /* used to differentiate between $main and others */
134	static JMPENV *main_top_env;	161	static JMPENV *main_top_env;
135	static HV *coro_state_stash, *coro_stash;	162	static HV *coro_state_stash, *coro_stash;
136	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 */
		170
		171	/* async_pool helper stuff */
		172	static SV *sv_pool_rss;
		173	static SV *sv_pool_size;
		174	static AV *av_async_pool;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
137		178
138	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
139	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
		181
		182	enum {
		183	CC_MAPPED = 0x01,
		184	CC_NOREUSE = 0x02, /* throw this away after tracing */
		185	CC_TRACE = 0x04,
		186	CC_TRACE_SUB = 0x08, /* trace sub calls */
		187	CC_TRACE_LINE = 0x10, /* trace each statement */
		188	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		189	};
140		190
141	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	192	typedef struct coro_cctx {
143	struct coro_cctx *next;	193	struct coro_cctx *next;
144		194
…		…
153	coro_context cctx;	203	coro_context cctx;
154		204
155	#if CORO_USE_VALGRIND	205	#if CORO_USE_VALGRIND
156	int valgrind_id;	206	int valgrind_id;
157	#endif	207	#endif
158	char inuse, mapped;	208	unsigned char flags;
159	} coro_cctx;	209	} coro_cctx;
160		210
161	enum {	211	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	216	};
167		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
168	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
169	struct coro {	232	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	234	coro_cctx *cctx;
172		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots *slot; /* basically the saved sp */
		239
173	/* data associated with this coroutine (initial args) */	240	AV *args; /* data associated with this coroutine (initial args) */
174	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
175	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
		243	HV *hv; /* the perl hash associated with this coro, if any */
178		244
179	/* optionally saved, might be zero */	245	/* statistics */
180	AV *defav; /* @_ */	246	int usecount; /* number of transfers to this coro */
181	SV *defsv; /* $_ */
182	SV *errsv; /* $@ */
183	GV *deffh; /* default filehandle */
184	SV *irssv; /* $/ */
185	SV *irssv_sv; /* real $/ cache */
186
187	#define VAR(name,type) type name;
188	# include "state.h"
189	#undef VAR
190		247
191	/* coro process data */	248	/* coro process data */
192	int prio;	249	int prio;
		250	SV *throw; /* exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
193		254
194	/* linked list */	255	/* linked list */
195	struct coro *next, *prev;	256	struct coro *next, *prev;
196	HV *hv; /* the perl hash associated with this coro, if any */
197	};	257	};
198		258
199	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
200	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
201		261
…		…
208	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
209	#define PRIO_MIN -4	269	#define PRIO_MIN -4
210		270
211	/* for Coro.pm */	271	/* for Coro.pm */
212	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	275	static int coro_nready;
215	static struct coro *coro_first;	276	static struct coro *coro_first;
216		277
217	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
218		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
219	static AV *	310	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
221	{	312	{
222	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
223	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
224		315
225	newpadlist = newAV ();	316	newpadlist = newAV ();
226	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
227	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
228	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
229	#else	320	#else
230	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
231	#endif	322	#endif
232	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
275	SvREFCNT_dec (av);	366	SvREFCNT_dec (av);
276		367
277	return 0;	368	return 0;
278	}	369	}
279		370
280	#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
281		373
282	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	};
283		378
284	#define CORO_MAGIC(cv) \	379	#define CORO_MAGIC(sv,type) \
285	SvMAGIC (cv) \	380	SvMAGIC (sv) \
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	381	? SvMAGIC (sv)->mg_type == type \
287	? SvMAGIC (cv) \	382	? SvMAGIC (sv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	383	: mg_find (sv, type) \
289	: 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))
290		414
291	/* the next two functions merely cache the padlists */	415	/* the next two functions merely cache the padlists */
292	static void	416	static void
293	get_padlist (pTHX_ CV *cv)	417	get_padlist (pTHX_ CV *cv)
294	{	418	{
295	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC_cv (cv);
296	AV *av;	420	AV *av;
297		421
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	422	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	423	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	424	else
301	{	425	{
302	#if CORO_PREFER_PERL_FUNCTIONS	426	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	427	/* this is probably cleaner? but also slower! */
		428	/* in practise, it seems to be less stable */
304	CV *cp = Perl_cv_clone (cv);	429	CV *cp = Perl_cv_clone (cv);
305	CvPADLIST (cv) = CvPADLIST (cp);	430	CvPADLIST (cv) = CvPADLIST (cp);
306	CvPADLIST (cp) = 0;	431	CvPADLIST (cp) = 0;
307	SvREFCNT_dec (cp);	432	SvREFCNT_dec (cp);
308	#else	433	#else
…		…
312	}	437	}
313		438
314	static void	439	static void
315	put_padlist (pTHX_ CV *cv)	440	put_padlist (pTHX_ CV *cv)
316	{	441	{
317	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
318	AV *av;	443	AV *av;
319		444
320	if (!mg)	445	if (expect_false (!mg))
321	{	446	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();
326	}
327		447
328	av = (AV *)mg->mg_obj;	448	av = (AV *)mg->mg_obj;
329		449
330	if (AvFILLp (av) >= AvMAX (av))	450	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	451	av_extend (av, AvMAX (av) + 1);
332		452
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	453	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	454	}
335		455
336	/** load & save, init *******************************************************/	456	/** load & save, init *******************************************************/
337
338	#define SB do {
339	#define SE } while (0)
340
341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342		457
343	static void	458	static void
344	load_perl (pTHX_ Coro__State c)	459	load_perl (pTHX_ Coro__State c)
345	{	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
346	#define VAR(name,type) PL_ ## name = c->name;	471	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	472	# include "state.h"
348	#undef VAR	473	#undef VAR
349
350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355	if (c->irssv)
356	{
357	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358	{
359	SvREFCNT_dec (c->irssv);
360	c->irssv = 0;
361	}
362	else
363	{
364	REPLACE_SV (PL_rs, c->irssv);
365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366	sv_setsv (c->irssv_sv, PL_rs);
367	}
368	}
369		474
370	{	475	{
371	dSP;	476	dSP;
		477
372	CV *cv;	478	CV *cv;
373		479
374	/* now do the ugly restore mess */	480	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	481	while (expect_true (cv = (CV *)POPs))
376	{	482	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	483	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	484	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	485	CvPADLIST (cv) = (AV *)POPs;
380	}	486	}
…		…
399		505
400	XPUSHs (Nullsv);	506	XPUSHs (Nullsv);
401	/* this loop was inspired by pp_caller */	507	/* this loop was inspired by pp_caller */
402	for (;;)	508	for (;;)
403	{	509	{
404	while (cxix >= 0)	510	while (expect_true (cxix >= 0))
405	{	511	{
406	PERL_CONTEXT *cx = &ccstk[cxix--];	512	PERL_CONTEXT *cx = &ccstk[cxix--];
407		513
408	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	514	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
409	{	515	{
410	CV *cv = cx->blk_sub.cv;	516	CV *cv = cx->blk_sub.cv;
411		517
412	if (CvDEPTH (cv))	518	if (expect_true (CvDEPTH (cv)))
413	{	519	{
414	EXTEND (SP, 3);	520	EXTEND (SP, 3);
415	PUSHs ((SV *)CvPADLIST (cv));	521	PUSHs ((SV *)CvPADLIST (cv));
416	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	522	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
417	PUSHs ((SV *)cv);	523	PUSHs ((SV *)cv);
418		524
419	CvDEPTH (cv) = 0;	525	CvDEPTH (cv) = 0;
420	get_padlist (aTHX_ cv);	526	get_padlist (aTHX_ cv);
421	}	527	}
422	}	528	}
423	}	529	}
424		530
425	if (top_si->si_type == PERLSI_MAIN)	531	if (expect_true (top_si->si_type == PERLSI_MAIN))
426	break;	532	break;
427		533
428	top_si = top_si->si_prev;	534	top_si = top_si->si_prev;
429	ccstk = top_si->si_cxstack;	535	ccstk = top_si->si_cxstack;
430	cxix = top_si->si_cxix;	536	cxix = top_si->si_cxix;
431	}	537	}
432		538
433	PUTBACK;	539	PUTBACK;
434	}	540	}
435		541
436	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 */
437	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	543	/* we manually unroll here, as usually 2 slots is enough */
438	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	544	if (SLOT_COUNT >= 1) CXINC;
439	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	545	if (SLOT_COUNT >= 2) CXINC;
440	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 */
441		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
442	#define VAR(name,type)c->name = PL_ ## name;	564	#define VAR(name,type) slot->name = PL_ ## name;
443	# include "state.h"	565	# include "state.h"
444	#undef VAR	566	#undef VAR
		567	}
445	}	568	}
446		569
447	/*	570	/*
448	* allocate various perl stacks. This is an exact copy	571	* allocate various perl stacks. This is an exact copy
449	* of perl.c:init_stacks, except that it uses less memory	572	* of perl.c:init_stacks, except that it uses less memory
…		…
454	# define coro_init_stacks init_stacks	577	# define coro_init_stacks init_stacks
455	#else	578	#else
456	static void	579	static void
457	coro_init_stacks (pTHX)	580	coro_init_stacks (pTHX)
458	{	581	{
459	PL_curstackinfo = new_stackinfo(64, 6);	582	PL_curstackinfo = new_stackinfo(32, 8);
460	PL_curstackinfo->si_type = PERLSI_MAIN;	583	PL_curstackinfo->si_type = PERLSI_MAIN;
461	PL_curstack = PL_curstackinfo->si_stack;	584	PL_curstack = PL_curstackinfo->si_stack;
462	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	585	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
463		586
464	PL_stack_base = AvARRAY(PL_curstack);	587	PL_stack_base = AvARRAY(PL_curstack);
465	PL_stack_sp = PL_stack_base;	588	PL_stack_sp = PL_stack_base;
466	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	589	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
467		590
468	New(50,PL_tmps_stack,64,SV*);	591	New(50,PL_tmps_stack,32,SV*);
469	PL_tmps_floor = -1;	592	PL_tmps_floor = -1;
470	PL_tmps_ix = -1;	593	PL_tmps_ix = -1;
471	PL_tmps_max = 64;	594	PL_tmps_max = 32;
472		595
473	New(54,PL_markstack,16,I32);	596	New(54,PL_markstack,16,I32);
474	PL_markstack_ptr = PL_markstack;	597	PL_markstack_ptr = PL_markstack;
475	PL_markstack_max = PL_markstack + 16;	598	PL_markstack_max = PL_markstack + 16;
476		599
477	#ifdef SET_MARK_OFFSET	600	#ifdef SET_MARK_OFFSET
478	SET_MARK_OFFSET;	601	SET_MARK_OFFSET;
479	#endif	602	#endif
480		603
481	New(54,PL_scopestack,16,I32);	604	New(54,PL_scopestack,8,I32);
482	PL_scopestack_ix = 0;	605	PL_scopestack_ix = 0;
483	PL_scopestack_max = 16;	606	PL_scopestack_max = 8;
484		607
485	New(54,PL_savestack,64,ANY);	608	New(54,PL_savestack,24,ANY);
486	PL_savestack_ix = 0;	609	PL_savestack_ix = 0;
487	PL_savestack_max = 64;	610	PL_savestack_max = 24;
488		611
489	#if !PERL_VERSION_ATLEAST (5,9,0)	612	#if !PERL_VERSION_ATLEAST (5,10,0)
490	New(54,PL_retstack,4,OP*);	613	New(54,PL_retstack,4,OP*);
491	PL_retstack_ix = 0;	614	PL_retstack_ix = 0;
492	PL_retstack_max = 4;	615	PL_retstack_max = 4;
493	#endif	616	#endif
494	}	617	}
…		…
498	* destroy the stacks, the callchain etc...	621	* destroy the stacks, the callchain etc...
499	*/	622	*/
500	static void	623	static void
501	coro_destroy_stacks (pTHX)	624	coro_destroy_stacks (pTHX)
502	{	625	{
503	if (!IN_DESTRUCT)
504	{
505	/* restore all saved variables and stuff */
506	LEAVE_SCOPE (0);
507	assert (PL_tmps_floor == -1);
508
509	/* free all temporaries */
510	FREETMPS;
511	assert (PL_tmps_ix == -1);
512
513	/* unwind all extra stacks */
514	POPSTACK_TO (PL_mainstack);
515
516	/* unwind main stack */
517	dounwind (-1);
518	}
519
520	while (PL_curstackinfo->si_next)	626	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	627	PL_curstackinfo = PL_curstackinfo->si_next;
522		628
523	while (PL_curstackinfo)	629	while (PL_curstackinfo)
524	{	630	{
…		…
534		640
535	Safefree (PL_tmps_stack);	641	Safefree (PL_tmps_stack);
536	Safefree (PL_markstack);	642	Safefree (PL_markstack);
537	Safefree (PL_scopestack);	643	Safefree (PL_scopestack);
538	Safefree (PL_savestack);	644	Safefree (PL_savestack);
539	#if !PERL_VERSION_ATLEAST (5,9,0)	645	#if !PERL_VERSION_ATLEAST (5,10,0)
540	Safefree (PL_retstack);	646	Safefree (PL_retstack);
541	#endif	647	#endif
542	}	648	}
543		649
544	static size_t	650	static size_t
545	coro_rss (struct coro *coro)	651	coro_rss (pTHX_ struct coro *coro)
546	{	652	{
547	size_t rss = sizeof (coro);	653	size_t rss = sizeof (*coro);
548		654
549	if (coro->mainstack)	655	if (coro->mainstack)
550	{	656	{
		657	perl_slots tmp_slot;
		658	perl_slots *slot;
		659
551	if (coro->flags & CF_RUNNING)	660	if (coro->flags & CF_RUNNING)
552	{	661	{
		662	slot = &tmp_slot;
		663
553	#define VAR(name,type)coro->name = PL_ ## name;	664	#define VAR(name,type) slot->name = PL_ ## name;
554	# include "state.h"	665	# include "state.h"
555	#undef VAR	666	#undef VAR
556	}	667	}
		668	else
		669	slot = coro->slot;
557		670
558	rss += sizeof (coro->curstackinfo);	671	rss += sizeof (slot->curstackinfo);
559	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
560	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	672	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
561	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	673	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
562	rss += coro->tmps_max * sizeof (SV *);	674	rss += slot->tmps_max * sizeof (SV *);
563	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	675	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
564	rss += coro->scopestack_max * sizeof (I32);	676	rss += slot->scopestack_max * sizeof (I32);
565	rss += coro->savestack_max * sizeof (ANY);	677	rss += slot->savestack_max * sizeof (ANY);
566		678
567	#if !PERL_VERSION_ATLEAST (5,9,0)	679	#if !PERL_VERSION_ATLEAST (5,10,0)
568	rss += coro->retstack_max * sizeof (OP *);	680	rss += slot->retstack_max * sizeof (OP *);
569	#endif	681	#endif
570	}	682	}
571		683
572	return rss;	684	return rss;
573	}	685	}
574		686
575	/** coroutine stack handling ************************************************/	687	/** coroutine stack handling ************************************************/
576		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
577	static void	779	static void
578	setup_coro (pTHX_ struct coro *coro)	780	coro_setup (pTHX_ struct coro *coro)
579	{	781	{
580	/*	782	/*
581	* emulate part of the perl startup here.	783	* emulate part of the perl startup here.
582	*/	784	*/
583	coro_init_stacks (aTHX);	785	coro_init_stacks (aTHX);
584		786
		787	PL_runops = RUNOPS_DEFAULT;
585	PL_curcop = &PL_compiling;	788	PL_curcop = &PL_compiling;
586	PL_in_eval = EVAL_NULL;	789	PL_in_eval = EVAL_NULL;
587	PL_comppad = 0;	790	PL_comppad = 0;
588	PL_curpm = 0;	791	PL_curpm = 0;
		792	PL_curpad = 0;
589	PL_localizing = 0;	793	PL_localizing = 0;
590	PL_dirty = 0;	794	PL_dirty = 0;
591	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);
592		810
593	{	811	{
594	dSP;	812	dSP;
595	LOGOP myop;	813	LOGOP myop;
596		814
597	SvREFCNT_dec (GvAV (PL_defgv));
598	GvAV (PL_defgv) = coro->args; coro->args = 0;
599
600	Zero (&myop, 1, LOGOP);	815	Zero (&myop, 1, LOGOP);
601	myop.op_next = Nullop;	816	myop.op_next = Nullop;
602	myop.op_flags = OPf_WANT_VOID;	817	myop.op_flags = OPf_WANT_VOID;
603		818
604	PUSHMARK (SP);	819	PUSHMARK (SP);
605	XPUSHs (av_shift (GvAV (PL_defgv)));	820	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
606	PUTBACK;	821	PUTBACK;
607	PL_op = (OP *)&myop;	822	PL_op = (OP *)&myop;
608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	823	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609	SPAGAIN;	824	SPAGAIN;
610	}	825	}
611		826
612	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);
613	}	869	}
614		870
615	static void	871	static void
616	free_coro_mortal (pTHX)	872	free_coro_mortal (pTHX)
617	{	873	{
618	if (coro_mortal)	874	if (expect_true (coro_mortal))
619	{	875	{
620	SvREFCNT_dec (coro_mortal);	876	SvREFCNT_dec (coro_mortal);
621	coro_mortal = 0;	877	coro_mortal = 0;
622	}	878	}
		879	}
		880
		881	static int
		882	runops_trace (pTHX)
		883	{
		884	COP *oldcop = 0;
		885	int oldcxix = -2;
		886	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		887	coro_cctx *cctx = coro->cctx;
		888
		889	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		890	{
		891	PERL_ASYNC_CHECK ();
		892
		893	if (cctx->flags & CC_TRACE_ALL)
		894	{
		895	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		896	{
		897	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		898	SV **bot, **top;
		899	AV *av = newAV (); /* return values */
		900	SV **cb;
		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;
		918	ENTER;
		919	SAVETMPS;
		920	EXTEND (SP, 3);
		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	}
		933
		934	if (oldcop != PL_curcop)
		935	{
		936	oldcop = PL_curcop;
		937
		938	if (PL_curcop != &PL_compiling)
		939	{
		940	SV **cb;
		941
		942	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		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;
		950	GV *gv = CvGV (cx->blk_sub.cv);
		951	SV *fullname = sv_2mortal (newSV (0));
		952
		953	if (isGV (gv))
		954	gv_efullname3 (fullname, gv, 0);
		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;
		985	PUSHMARK (SP);
		986	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		987	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		988	PUTBACK;
		989	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		990	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		991	SPAGAIN;
		992	FREETMPS;
		993	LEAVE;
		994	PL_runops = runops_trace;
		995	}
		996	}
		997	}
		998	}
		999	}
		1000
		1001	TAINT_NOT;
		1002	return 0;
623	}	1003	}
624		1004
625	/* 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 */
626	/* _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 */
627	/* during execution of a perl program */	1007	/* during execution of a perl program */
628	static void NOINLINE	1008	static void NOINLINE
629	prepare_cctx (pTHX_ coro_cctx *cctx)	1009	cctx_prepare (pTHX_ coro_cctx *cctx)
630	{	1010	{
631	dSP;	1011	dSP;
632	LOGOP myop;	1012	LOGOP myop;
		1013
		1014	PL_top_env = &PL_start_env;
		1015
		1016	if (cctx->flags & CC_TRACE)
		1017	PL_runops = runops_trace;
633		1018
634	Zero (&myop, 1, LOGOP);	1019	Zero (&myop, 1, LOGOP);
635	myop.op_next = PL_op;	1020	myop.op_next = PL_op;
636	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1021	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
637		1022
…		…
647		1032
648	/*	1033	/*
649	* this is a _very_ stripped down perl interpreter ;)	1034	* this is a _very_ stripped down perl interpreter ;)
650	*/	1035	*/
651	static void	1036	static void
652	coro_run (void *arg)	1037	cctx_run (void *arg)
653	{	1038	{
654	dTHX;	1039	dTHX;
655		1040
656	/* coro_run is the alternative tail of transfer(), so unlock here. */	1041	/* cctx_run is the alternative tail of transfer(), so unlock here. */
657	UNLOCK;	1042	UNLOCK;
658		1043
659	PL_top_env = &PL_start_env;	1044	/* we now skip the entersub that lead to transfer() */
		1045	PL_op = PL_op->op_next;
660		1046
661	/* inject a fake subroutine call to cctx_init */	1047	/* inject a fake subroutine call to cctx_init */
662	prepare_cctx (aTHX_ (coro_cctx *)arg);	1048	cctx_prepare (aTHX_ (coro_cctx *)arg);
663		1049
664	/* 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 */
665	PL_restartop = PL_op;	1051	PL_restartop = PL_op;
666	perl_run (PL_curinterp);	1052	perl_run (PL_curinterp);
667		1053
…		…
686	++cctx_count;	1072	++cctx_count;
687		1073
688	Newz (0, cctx, 1, coro_cctx);	1074	Newz (0, cctx, 1, coro_cctx);
689		1075
690	#if HAVE_MMAP	1076	#if HAVE_MMAP
691
692	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;
693	/* mmap supposedly does allocate-on-write for us */	1078	/* mmap supposedly does allocate-on-write for us */
694	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);
695		1080
696	if (cctx->sptr != (void *)-1)	1081	if (cctx->sptr != (void *)-1)
…		…
698	# if CORO_STACKGUARD	1083	# if CORO_STACKGUARD
699	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1084	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
700	# endif	1085	# endif
701	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1086	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
702	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1087	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
703	cctx->mapped = 1;	1088	cctx->flags |= CC_MAPPED;
704	}	1089	}
705	else	1090	else
706	#endif	1091	#endif
707	{	1092	{
708	cctx->ssize = coro_stacksize * (long)sizeof (long);	1093	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
717	stack_start = cctx->sptr;	1102	stack_start = cctx->sptr;
718	stack_size = cctx->ssize;	1103	stack_size = cctx->ssize;
719	}	1104	}
720		1105
721	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1106	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
722	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);
723		1108
724	return cctx;	1109	return cctx;
725	}	1110	}
726		1111
727	static void	1112	static void
…		…
735	#if CORO_USE_VALGRIND	1120	#if CORO_USE_VALGRIND
736	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1121	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
737	#endif	1122	#endif
738		1123
739	#if HAVE_MMAP	1124	#if HAVE_MMAP
740	if (cctx->mapped)	1125	if (cctx->flags & CC_MAPPED)
741	munmap (cctx->sptr, cctx->ssize);	1126	munmap (cctx->sptr, cctx->ssize);
742	else	1127	else
743	#endif	1128	#endif
744	Safefree (cctx->sptr);	1129	Safefree (cctx->sptr);
745		1130
746	Safefree (cctx);	1131	Safefree (cctx);
747	}	1132	}
748		1133
		1134	/* wether this cctx should be destructed */
		1135	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1136
749	static coro_cctx *	1137	static coro_cctx *
750	cctx_get (pTHX)	1138	cctx_get (pTHX)
751	{	1139	{
752	while (cctx_first)	1140	while (expect_true (cctx_first))
753	{	1141	{
754	coro_cctx *cctx = cctx_first;	1142	coro_cctx *cctx = cctx_first;
755	cctx_first = cctx->next;	1143	cctx_first = cctx->next;
756	--cctx_idle;	1144	--cctx_idle;
757		1145
758	if (cctx->ssize >= coro_stacksize)	1146	if (expect_true (!CCTX_EXPIRED (cctx)))
759	return cctx;	1147	return cctx;
760		1148
761	cctx_destroy (cctx);	1149	cctx_destroy (cctx);
762	}	1150	}
763		1151
764	PL_op = PL_op->op_next;
765	return cctx_new ();	1152	return cctx_new ();
766	}	1153	}
767		1154
768	static void	1155	static void
769	cctx_put (coro_cctx *cctx)	1156	cctx_put (coro_cctx *cctx)
770	{	1157	{
771	/* free another cctx if overlimit */	1158	/* free another cctx if overlimit */
772	if (cctx_idle >= MAX_IDLE_CCTX)	1159	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
773	{	1160	{
774	coro_cctx *first = cctx_first;	1161	coro_cctx *first = cctx_first;
775	cctx_first = first->next;	1162	cctx_first = first->next;
776	--cctx_idle;	1163	--cctx_idle;
777		1164
778	assert (!first->inuse);
779	cctx_destroy (first);	1165	cctx_destroy (first);
780	}	1166	}
781		1167
782	++cctx_idle;	1168	++cctx_idle;
783	cctx->next = cctx_first;	1169	cctx->next = cctx_first;
784	cctx_first = cctx;	1170	cctx_first = cctx;
785	}	1171	}
786		1172
787	/** coroutine switching *****************************************************/	1173	/** coroutine switching *****************************************************/
788		1174
789	/* never call directly, always through the coro_state_transfer global variable */	1175	static void
		1176	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1177	{
		1178	if (expect_true (prev != next))
		1179	{
		1180	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1181	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1182
		1183	if (expect_false (next->flags & CF_RUNNING))
		1184	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1185
		1186	if (expect_false (next->flags & CF_DESTROYED))
		1187	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1188
		1189	#if !PERL_VERSION_ATLEAST (5,10,0)
		1190	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1191	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1192	#endif
		1193	}
		1194	}
		1195
		1196	/* always use the TRANSFER macro */
790	static void NOINLINE	1197	static void NOINLINE
791	transfer (pTHX_ struct coro *prev, struct coro *next)	1198	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
792	{	1199	{
793	dSTACKLEVEL;	1200	dSTACKLEVEL;
		1201	static volatile int has_throw;
794		1202
795	/* sometimes transfer is only called to set idle_sp */	1203	/* sometimes transfer is only called to set idle_sp */
796	if (!next)	1204	if (expect_false (!next))
797	{	1205	{
798	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1206	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
799	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 */
800	}	1208	}
801	else if (prev != next)	1209	else if (expect_true (prev != next))
802	{	1210	{
803	coro_cctx *prev__cctx;	1211	coro_cctx *prev__cctx;
804		1212
805	if (prev->flags & CF_NEW)	1213	if (expect_false (prev->flags & CF_NEW))
806	{	1214	{
807	/* create a new empty context */	1215	/* create a new empty context */
808	Newz (0, prev->cctx, 1, coro_cctx);	1216	Newz (0, prev->cctx, 1, coro_cctx);
809	prev->cctx->inuse = 1;
810	prev->flags &= ~CF_NEW;	1217	prev->flags &= ~CF_NEW;
811	prev->flags |= CF_RUNNING;	1218	prev->flags |= CF_RUNNING;
812	}	1219	}
813		1220
814	/*TODO: must not croak here */
815	if (!prev->flags & CF_RUNNING)
816	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
817
818	if (next->flags & CF_RUNNING)
819	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
820
821	if (next->flags & CF_DESTROYED)
822	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
823
824	prev->flags &= ~CF_RUNNING;	1221	prev->flags &= ~CF_RUNNING;
825	next->flags |= CF_RUNNING;	1222	next->flags |= CF_RUNNING;
826		1223
827	LOCK;	1224	LOCK;
828		1225
		1226	/* first get rid of the old state */
		1227	save_perl (aTHX_ prev);
		1228
829	if (next->flags & CF_NEW)	1229	if (expect_false (next->flags & CF_NEW))
830	{	1230	{
831	/* need to start coroutine */	1231	/* need to start coroutine */
832	next->flags &= ~CF_NEW;	1232	next->flags &= ~CF_NEW;
833	/* first get rid of the old state */
834	save_perl (aTHX_ prev);
835	/* setup coroutine call */	1233	/* setup coroutine call */
836	setup_coro (aTHX_ next);	1234	coro_setup (aTHX_ next);
837	/* need a new stack */
838	assert (!next->cctx);
839	}	1235	}
840	else	1236	else
841	{
842	/* coroutine already started */
843	save_perl (aTHX_ prev);
844	load_perl (aTHX_ next);	1237	load_perl (aTHX_ next);
845	}
846		1238
847	prev__cctx = prev->cctx;	1239	prev__cctx = prev->cctx;
848		1240
849	/* possibly "free" the cctx */	1241	/* possibly "free" the cctx */
		1242	if (expect_true (
850	if (prev__cctx->idle_sp == STACKLEVEL)	1243	prev__cctx->idle_sp == STACKLEVEL
		1244	&& !(prev__cctx->flags & CC_TRACE)
		1245	&& !force_cctx
		1246	))
851	{	1247	{
852	/* 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 */
853	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));
854		1250
855	prev->cctx = 0;	1251	prev->cctx = 0;
856		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
857	cctx_put (prev__cctx);	1259	cctx_put (prev__cctx);
858	prev__cctx->inuse = 0;
859	}	1260	}
860		1261
		1262	++next->usecount;
		1263
861	if (!next->cctx)	1264	if (expect_true (!next->cctx))
862	{
863	next->cctx = cctx_get (aTHX);	1265	next->cctx = cctx_get (aTHX);
864	assert (!next->cctx->inuse);
865	next->cctx->inuse = 1;
866	}
867		1266
		1267	has_throw = !!next->throw;
		1268
868	if (prev__cctx != next->cctx)	1269	if (expect_false (prev__cctx != next->cctx))
869	{	1270	{
870	prev__cctx->top_env = PL_top_env;	1271	prev__cctx->top_env = PL_top_env;
871	PL_top_env = next->cctx->top_env;	1272	PL_top_env = next->cctx->top_env;
872	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1273	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
873	}	1274	}
874		1275
875	free_coro_mortal (aTHX);	1276	free_coro_mortal (aTHX);
876	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	}
877	}	1291	}
878	}	1292	}
879		1293
880	struct transfer_args	1294	struct transfer_args
881	{	1295	{
882	struct coro *prev, *next;	1296	struct coro *prev, *next;
883	};	1297	};
884		1298
		1299	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
885	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1300	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
886		1301
887	/** high level stuff ********************************************************/	1302	/** high level stuff ********************************************************/
888		1303
889	static int	1304	static int
890	coro_state_destroy (pTHX_ struct coro *coro)	1305	coro_state_destroy (pTHX_ struct coro *coro)
…		…
907		1322
908	if (coro->mainstack && coro->mainstack != main_mainstack)	1323	if (coro->mainstack && coro->mainstack != main_mainstack)
909	{	1324	{
910	struct coro temp;	1325	struct coro temp;
911		1326
912	assert (!(coro->flags & CF_RUNNING));
913
914	Zero (&temp, 1, struct coro);
915	temp.save = CORO_SAVE_ALL;
916
917	if (coro->flags & CF_RUNNING)	1327	if (coro->flags & CF_RUNNING)
918	croak ("FATAL: tried to destroy currently running coroutine");	1328	croak ("FATAL: tried to destroy currently running coroutine");
919		1329
920	save_perl (aTHX_ &temp);	1330	save_perl (aTHX_ &temp);
921	load_perl (aTHX_ coro);	1331	load_perl (aTHX_ coro);
922		1332
923	coro_destroy_stacks (aTHX);	1333	coro_destroy (aTHX_ coro);
924		1334
925	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1335	load_perl (aTHX_ &temp);
926		1336
927	coro->mainstack = 0;	1337	coro->slot = 0;
928	}	1338	}
929		1339
930	cctx_destroy (coro->cctx);	1340	cctx_destroy (coro->cctx);
931	SvREFCNT_dec (coro->args);	1341	SvREFCNT_dec (coro->args);
932		1342
…		…
973	#else	1383	#else
974	# define MGf_DUP 0	1384	# define MGf_DUP 0
975	#endif	1385	#endif
976	};	1386	};
977		1387
978	static struct coro *
979	SvSTATE_ (pTHX_ SV *coro)
980	{
981	HV *stash;
982	MAGIC *mg;
983
984	if (SvROK (coro))
985	coro = SvRV (coro);
986
987	stash = SvSTASH (coro);
988	if (stash != coro_stash && stash != coro_state_stash)
989	{
990	/* very slow, but rare, check */
991	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
992	croak ("Coro::State object required");
993	}
994
995	mg = CORO_MAGIC (coro);
996	return (struct coro *)mg->mg_ptr;
997	}
998
999	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1000
1001	static void	1388	static void
1002	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1389	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1003	{	1390	{
1004	ta->prev = SvSTATE (prev_sv);	1391	ta->prev = SvSTATE (prev_sv);
1005	ta->next = SvSTATE (next_sv);	1392	ta->next = SvSTATE (next_sv);
		1393	TRANSFER_CHECK (*ta);
1006	}	1394	}
1007		1395
1008	static void	1396	static void
1009	api_transfer (SV *prev_sv, SV *next_sv)	1397	api_transfer (SV *prev_sv, SV *next_sv)
1010	{	1398	{
1011	dTHX;	1399	dTHX;
1012	struct transfer_args ta;	1400	struct transfer_args ta;
1013		1401
1014	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1402	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1015	TRANSFER (ta);	1403	TRANSFER (ta, 1);
1016	}
1017
1018	static int
1019	api_save (SV *coro_sv, int new_save)
1020	{
1021	dTHX;
1022	struct coro *coro = SvSTATE (coro_sv);
1023	int old_save = coro->save;
1024
1025	if (new_save >= 0)
1026	coro->save = new_save;
1027
1028	return old_save;
1029	}	1404	}
1030		1405
1031	/** Coro ********************************************************************/	1406	/** Coro ********************************************************************/
1032		1407
1033	static void	1408	static void
…		…
1035	{	1410	{
1036	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);
1037	}	1412	}
1038		1413
1039	static SV *	1414	static SV *
1040	coro_deq (pTHX_ int min_prio)	1415	coro_deq (pTHX)
1041	{	1416	{
1042	int prio = PRIO_MAX - PRIO_MIN;	1417	int prio;
1043		1418
1044	min_prio -= PRIO_MIN;
1045	if (min_prio < 0)
1046	min_prio = 0;
1047
1048	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1419	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1049	if (AvFILLp (coro_ready [prio]) >= 0)	1420	if (AvFILLp (coro_ready [prio]) >= 0)
1050	return av_shift (coro_ready [prio]);	1421	return av_shift (coro_ready [prio]);
1051		1422
1052	return 0;	1423	return 0;
1053	}	1424	}
…		…
1055	static int	1426	static int
1056	api_ready (SV *coro_sv)	1427	api_ready (SV *coro_sv)
1057	{	1428	{
1058	dTHX;	1429	dTHX;
1059	struct coro *coro;	1430	struct coro *coro;
		1431	SV *sv_hook;
		1432	void (*xs_hook)(void);
1060		1433
1061	if (SvROK (coro_sv))	1434	if (SvROK (coro_sv))
1062	coro_sv = SvRV (coro_sv);	1435	coro_sv = SvRV (coro_sv);
1063		1436
1064	coro = SvSTATE (coro_sv);	1437	coro = SvSTATE (coro_sv);
…		…
1067	return 0;	1440	return 0;
1068		1441
1069	coro->flags |= CF_READY;	1442	coro->flags |= CF_READY;
1070		1443
1071	LOCK;	1444	LOCK;
		1445
		1446	sv_hook = coro_nready ? 0 : coro_readyhook;
		1447	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1448
1072	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1449	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1073	++coro_nready;	1450	++coro_nready;
		1451
1074	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 ();
1075		1472
1076	return 1;	1473	return 1;
1077	}	1474	}
1078		1475
1079	static int	1476	static int
…		…
1089	SV *prev_sv, *next_sv;	1486	SV *prev_sv, *next_sv;
1090		1487
1091	for (;;)	1488	for (;;)
1092	{	1489	{
1093	LOCK;	1490	LOCK;
1094	next_sv = coro_deq (aTHX_ PRIO_MIN);	1491	next_sv = coro_deq (aTHX);
1095		1492
1096	/* nothing to schedule: call the idle handler */	1493	/* nothing to schedule: call the idle handler */
1097	if (!next_sv)	1494	if (expect_false (!next_sv))
1098	{	1495	{
1099	dSP;	1496	dSP;
1100	UNLOCK;	1497	UNLOCK;
1101		1498
1102	ENTER;	1499	ENTER;
1103	SAVETMPS;	1500	SAVETMPS;
1104		1501
1105	PUSHMARK (SP);	1502	PUSHMARK (SP);
1106	PUTBACK;	1503	PUTBACK;
1107	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1504	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1505	SPAGAIN;
1108		1506
1109	FREETMPS;	1507	FREETMPS;
1110	LEAVE;	1508	LEAVE;
1111	continue;	1509	continue;
1112	}	1510	}
1113		1511
1114	ta->next = SvSTATE (next_sv);	1512	ta->next = SvSTATE (next_sv);
1115		1513
1116	/* cannot transfer to destroyed coros, skip and look for next */	1514	/* cannot transfer to destroyed coros, skip and look for next */
1117	if (ta->next->flags & CF_DESTROYED)	1515	if (expect_false (ta->next->flags & CF_DESTROYED))
1118	{	1516	{
1119	UNLOCK;	1517	UNLOCK;
1120	SvREFCNT_dec (next_sv);	1518	SvREFCNT_dec (next_sv);
1121	/* coro_nready is already taken care of by destroy */	1519	/* coro_nready is already taken care of by destroy */
1122	continue;	1520	continue;
…		…
1127	break;	1525	break;
1128	}	1526	}
1129		1527
1130	/* free this only after the transfer */	1528	/* free this only after the transfer */
1131	prev_sv = SvRV (coro_current);	1529	prev_sv = SvRV (coro_current);
1132	SvRV_set (coro_current, next_sv);
1133	ta->prev = SvSTATE (prev_sv);	1530	ta->prev = SvSTATE (prev_sv);
1134		1531	TRANSFER_CHECK (*ta);
1135	assert (ta->next->flags & CF_READY);	1532	assert (ta->next->flags & CF_READY);
1136	ta->next->flags &= ~CF_READY;	1533	ta->next->flags &= ~CF_READY;
		1534	SvRV_set (coro_current, next_sv);
1137		1535
1138	LOCK;	1536	LOCK;
1139	free_coro_mortal (aTHX);	1537	free_coro_mortal (aTHX);
1140	coro_mortal = prev_sv;	1538	coro_mortal = prev_sv;
1141	UNLOCK;	1539	UNLOCK;
…		…
1167	{	1565	{
1168	dTHX;	1566	dTHX;
1169	struct transfer_args ta;	1567	struct transfer_args ta;
1170		1568
1171	prepare_schedule (aTHX_ &ta);	1569	prepare_schedule (aTHX_ &ta);
1172	TRANSFER (ta);	1570	TRANSFER (ta, 1);
1173	}	1571	}
1174		1572
1175	static int	1573	static int
1176	api_cede (void)	1574	api_cede (void)
1177	{	1575	{
1178	dTHX;	1576	dTHX;
1179	struct transfer_args ta;	1577	struct transfer_args ta;
1180		1578
1181	prepare_cede (aTHX_ &ta);	1579	prepare_cede (aTHX_ &ta);
1182		1580
1183	if (ta.prev != ta.next)	1581	if (expect_true (ta.prev != ta.next))
1184	{	1582	{
1185	TRANSFER (ta);	1583	TRANSFER (ta, 1);
1186	return 1;	1584	return 1;
1187	}	1585	}
1188	else	1586	else
1189	return 0;	1587	return 0;
1190	}	1588	}
…		…
1195	dTHX;	1593	dTHX;
1196	struct transfer_args ta;	1594	struct transfer_args ta;
1197		1595
1198	if (prepare_cede_notself (aTHX_ &ta))	1596	if (prepare_cede_notself (aTHX_ &ta))
1199	{	1597	{
1200	TRANSFER (ta);	1598	TRANSFER (ta, 1);
1201	return 1;	1599	return 1;
1202	}	1600	}
1203	else	1601	else
1204	return 0;	1602	return 0;
1205	}	1603	}
1206		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
1207	MODULE = Coro::State PACKAGE = Coro::State	1647	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1208		1648
1209	PROTOTYPES: DISABLE	1649	PROTOTYPES: DISABLE
1210		1650
1211	BOOT:	1651	BOOT:
1212	{	1652	{
1213	#ifdef USE_ITHREADS	1653	#ifdef USE_ITHREADS
1214	MUTEX_INIT (&coro_mutex);	1654	MUTEX_INIT (&coro_mutex);
1215	#endif	1655	#endif
1216	BOOT_PAGESIZE;	1656	BOOT_PAGESIZE;
1217		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));
		1668
1218	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1669	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1219		1670
1220	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1671	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1221	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1672	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1222	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1223	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1224	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1225	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1673	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1226	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1674	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1227		1675
1228	main_mainstack = PL_mainstack;	1676	main_mainstack = PL_mainstack;
1229	main_top_env = PL_top_env;	1677	main_top_env = PL_top_env;
1230		1678
1231	while (main_top_env->je_prev)	1679	while (main_top_env->je_prev)
1232	main_top_env = main_top_env->je_prev;	1680	main_top_env = main_top_env->je_prev;
1233		1681
1234	coroapi.ver = CORO_API_VERSION;	1682	coroapi.ver = CORO_API_VERSION;
		1683	coroapi.rev = CORO_API_REVISION;
1235	coroapi.transfer = api_transfer;	1684	coroapi.transfer = api_transfer;
1236		1685
1237	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1686	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1238	}	1687	}
1239		1688
1240	SV *	1689	SV *
1241	new (char *klass, ...)	1690	new (char *klass, ...)
1242	CODE:	1691	CODE:
1243	{	1692	{
1244	struct coro *coro;	1693	struct coro *coro;
		1694	MAGIC *mg;
1245	HV *hv;	1695	HV *hv;
1246	int i;	1696	int i;
1247		1697
1248	Newz (0, coro, 1, struct coro);	1698	Newz (0, coro, 1, struct coro);
1249	coro->args = newAV ();	1699	coro->args = newAV ();
1250	coro->save = CORO_SAVE_DEF;
1251	coro->flags = CF_NEW;	1700	coro->flags = CF_NEW;
1252		1701
1253	if (coro_first) coro_first->prev = coro;	1702	if (coro_first) coro_first->prev = coro;
1254	coro->next = coro_first;	1703	coro->next = coro_first;
1255	coro_first = coro;	1704	coro_first = coro;
1256		1705
1257	coro->hv = hv = newHV ();	1706	coro->hv = hv = newHV ();
1258	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;
1259	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1709	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1260		1710
		1711	av_extend (coro->args, items - 1);
1261	for (i = 1; i < items; i++)	1712	for (i = 1; i < items; i++)
1262	av_push (coro->args, newSVsv (ST (i)));	1713	av_push (coro->args, newSVsv (ST (i)));
1263	}	1714	}
1264	OUTPUT:	1715	OUTPUT:
1265	RETVAL	1716	RETVAL
1266		1717
1267	int	1718	# these not obviously related functions are all rolled into the same xs
1268	save (SV *coro, int new_save = -1)	1719	# function to increase chances that they all will call transfer with the same
1269	CODE:	1720	# stack offset
1270	RETVAL = api_save (coro, new_save);
1271	OUTPUT:
1272	RETVAL
1273
1274	int
1275	save_also (SV *coro_sv, int save_also)
1276	CODE:
1277	{
1278	struct coro *coro = SvSTATE (coro_sv);
1279	RETVAL = coro->save;
1280	coro->save |= save_also;
1281	}
1282	OUTPUT:
1283	RETVAL
1284
1285	void	1721	void
1286	_set_stacklevel (...)	1722	_set_stacklevel (...)
1287	ALIAS:	1723	ALIAS:
1288	Coro::State::transfer = 1	1724	Coro::State::transfer = 1
1289	Coro::schedule = 2	1725	Coro::schedule = 2
…		…
1291	Coro::cede_notself = 4	1727	Coro::cede_notself = 4
1292	CODE:	1728	CODE:
1293	{	1729	{
1294	struct transfer_args ta;	1730	struct transfer_args ta;
1295		1731
		1732	PUTBACK;
1296	switch (ix)	1733	switch (ix)
1297	{	1734	{
1298	case 0:	1735	case 0:
1299	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1736	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1300	ta.next = 0;	1737	ta.next = 0;
…		…
1319	if (!prepare_cede_notself (aTHX_ &ta))	1756	if (!prepare_cede_notself (aTHX_ &ta))
1320	XSRETURN_EMPTY;	1757	XSRETURN_EMPTY;
1321		1758
1322	break;	1759	break;
1323	}	1760	}
		1761	SPAGAIN;
1324		1762
1325	BARRIER;	1763	BARRIER;
		1764	PUTBACK;
1326	TRANSFER (ta);	1765	TRANSFER (ta, 0);
1327		1766	SPAGAIN; /* might be the sp of a different coroutine now */
1328	if (GIMME_V != G_VOID && ta.next != ta.prev)	1767	/* be extra careful not to ever do anything after TRANSFER */
1329	XSRETURN_YES;
1330	}	1768	}
1331		1769
1332	bool	1770	bool
1333	_destroy (SV *coro_sv)	1771	_destroy (SV *coro_sv)
1334	CODE:	1772	CODE:
1335	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1773	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1336	OUTPUT:	1774	OUTPUT:
1337	RETVAL	1775	RETVAL
1338		1776
1339	void	1777	void
1340	_exit (code)	1778	_exit (int code)
1341	int code
1342	PROTOTYPE: $	1779	PROTOTYPE: $
1343	CODE:	1780	CODE:
1344	_exit (code);	1781	_exit (code);
1345		1782
1346	int	1783	int
…		…
1375	if (coro->hv)	1812	if (coro->hv)
1376	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1813	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1377	}	1814	}
1378		1815
1379	void	1816	void
1380	_eval (Coro::State coro, SV *coderef)	1817	call (Coro::State coro, SV *coderef)
		1818	ALIAS:
		1819	eval = 1
1381	CODE:	1820	CODE:
1382	{	1821	{
1383	if (coro->mainstack)	1822	if (coro->mainstack)
1384	{	1823	{
1385	struct coro temp;	1824	struct coro temp;
1386	Zero (&temp, 1, struct coro);
1387	temp.save = CORO_SAVE_ALL;
1388		1825
1389	if (!(coro->flags & CF_RUNNING))	1826	if (!(coro->flags & CF_RUNNING))
1390	{	1827	{
		1828	PUTBACK;
1391	save_perl (aTHX_ &temp);	1829	save_perl (aTHX_ &temp);
1392	load_perl (aTHX_ coro);	1830	load_perl (aTHX_ coro);
1393	}	1831	}
1394		1832
1395	{	1833	{
1396	dSP;	1834	dSP;
1397	ENTER;	1835	ENTER;
1398	SAVETMPS;	1836	SAVETMPS;
		1837	PUTBACK;
		1838	PUSHSTACK;
1399	PUSHMARK (SP);	1839	PUSHMARK (SP);
1400	PUTBACK;	1840
		1841	if (ix)
		1842	eval_sv (coderef, 0);
		1843	else
1401	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;
1402	SPAGAIN;	1847	SPAGAIN;
1403	FREETMPS;	1848	FREETMPS;
1404	LEAVE;	1849	LEAVE;
1405	PUTBACK;	1850	PUTBACK;
1406	}	1851	}
1407		1852
1408	if (!(coro->flags & CF_RUNNING))	1853	if (!(coro->flags & CF_RUNNING))
1409	{	1854	{
1410	save_perl (aTHX_ coro);	1855	save_perl (aTHX_ coro);
1411	load_perl (aTHX_ &temp);	1856	load_perl (aTHX_ &temp);
		1857	SPAGAIN;
1412	}	1858	}
1413	}	1859	}
1414	}	1860	}
1415		1861
1416	SV *	1862	SV *
1417	is_ready (Coro::State coro)	1863	is_ready (Coro::State coro)
1418	PROTOTYPE: $	1864	PROTOTYPE: $
1419	ALIAS:	1865	ALIAS:
1420	is_ready = CF_READY	1866	is_ready = CF_READY
…		…
1424	CODE:	1870	CODE:
1425	RETVAL = boolSV (coro->flags & ix);	1871	RETVAL = boolSV (coro->flags & ix);
1426	OUTPUT:	1872	OUTPUT:
1427	RETVAL	1873	RETVAL
1428		1874
		1875	void
		1876	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1877
		1878	SV *
		1879	has_cctx (Coro::State coro)
		1880	PROTOTYPE: $
		1881	CODE:
		1882	RETVAL = boolSV (!!coro->cctx);
		1883	OUTPUT:
		1884	RETVAL
		1885
		1886	int
		1887	is_traced (Coro::State coro)
		1888	PROTOTYPE: $
		1889	CODE:
		1890	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1891	OUTPUT:
		1892	RETVAL
		1893
1429	IV	1894	IV
1430	rss (Coro::State coro)	1895	rss (Coro::State coro)
1431	PROTOTYPE: $	1896	PROTOTYPE: $
		1897	ALIAS:
		1898	usecount = 1
1432	CODE:	1899	CODE:
1433	RETVAL = coro_rss (coro);	1900	switch (ix)
		1901	{
		1902	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1903	case 1: RETVAL = coro->usecount; break;
		1904	}
1434	OUTPUT:	1905	OUTPUT:
1435	RETVAL	1906	RETVAL
1436		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	}
1437		1936
1438	MODULE = Coro::State PACKAGE = Coro	1937	MODULE = Coro::State PACKAGE = Coro
1439		1938
1440	BOOT:	1939	BOOT:
1441	{	1940	{
1442	int i;	1941	int i;
1443		1942
		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);
		1946
		1947	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1948	SvREADONLY_on (coro_current);
		1949
1444	coro_stash = gv_stashpv ("Coro", TRUE);	1950	coro_stash = gv_stashpv ("Coro", TRUE);
1445		1951
1446	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1952	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1447	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1953	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1448	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1954	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1449	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1955	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1450	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1956	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1451	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1957	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1452		1958
1453	coro_current = get_sv ("Coro::current", FALSE);
1454	SvREADONLY_on (coro_current);
1455
1456	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1959	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1457	coro_ready[i] = newAV ();	1960	coro_ready[i] = newAV ();
1458		1961
1459	{	1962	{
1460	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 */
1461		1965
1462	coroapi.schedule = api_schedule;	1966	coroapi.schedule = api_schedule;
1463	coroapi.save = api_save;
1464	coroapi.cede = api_cede;	1967	coroapi.cede = api_cede;
1465	coroapi.cede_notself = api_cede_notself;	1968	coroapi.cede_notself = api_cede_notself;
1466	coroapi.ready = api_ready;	1969	coroapi.ready = api_ready;
1467	coroapi.is_ready = api_is_ready;	1970	coroapi.is_ready = api_is_ready;
1468	coroapi.nready = &coro_nready;	1971	coroapi.nready = &coro_nready;
…		…
1478	_set_current (SV *current)	1981	_set_current (SV *current)
1479	PROTOTYPE: $	1982	PROTOTYPE: $
1480	CODE:	1983	CODE:
1481	SvREFCNT_dec (SvRV (coro_current));	1984	SvREFCNT_dec (SvRV (coro_current));
1482	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;
1483		1995
1484	int	1996	int
1485	prio (Coro::State coro, int newprio = 0)	1997	prio (Coro::State coro, int newprio = 0)
1486	ALIAS:	1998	ALIAS:
1487	nice = 1	1999	nice = 1
…		…
1517	CODE:	2029	CODE:
1518	RETVAL = coro_nready;	2030	RETVAL = coro_nready;
1519	OUTPUT:	2031	OUTPUT:
1520	RETVAL	2032	RETVAL
1521		2033
		2034	# for async_pool speedup
		2035	void
		2036	_pool_1 (SV *cb)
		2037	CODE:
		2038	{
		2039	struct coro *coro = SvSTATE (coro_current);
		2040	HV *hv = (HV *)SvRV (coro_current);
		2041	AV *defav = GvAV (PL_defgv);
		2042	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		2043	AV *invoke_av;
		2044	int i, len;
		2045
		2046	if (!invoke)
		2047	{
		2048	SV *old = PL_diehook;
		2049	PL_diehook = 0;
		2050	SvREFCNT_dec (old);
		2051	croak ("\3async_pool terminate\2\n");
		2052	}
		2053
		2054	SvREFCNT_dec (coro->saved_deffh);
		2055	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		2056
		2057	hv_store (hv, "desc", sizeof ("desc") - 1,
		2058	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		2059
		2060	invoke_av = (AV *)SvRV (invoke);
		2061	len = av_len (invoke_av);
		2062
		2063	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2064
		2065	if (len > 0)
		2066	{
		2067	av_fill (defav, len - 1);
		2068	for (i = 0; i < len; ++i)
		2069	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		2070	}
		2071
		2072	SvREFCNT_dec (invoke);
		2073	}
		2074
		2075	void
		2076	_pool_2 (SV *cb)
		2077	CODE:
		2078	{
		2079	struct coro *coro = SvSTATE (coro_current);
		2080
		2081	sv_setsv (cb, &PL_sv_undef);
		2082
		2083	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2084	coro->saved_deffh = 0;
		2085
		2086	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		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);
		2092	croak ("\3async_pool terminate\2\n");
		2093	}
		2094
		2095	av_clear (GvAV (PL_defgv));
		2096	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2097	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2098
		2099	coro->prio = 0;
		2100
		2101	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2102	api_trace (coro_current, 0);
		2103
		2104	av_push (av_async_pool, newSVsv (coro_current));
		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
		2154
		2155
1522	MODULE = Coro::State PACKAGE = Coro::AIO	2156	MODULE = Coro::State PACKAGE = Coro::AIO
1523		2157
1524	SV *	2158	SV *
1525	_get_state ()	2159	_get_state ()
1526	CODE:	2160	CODE:
…		…
1551	PL_laststype = data->laststype;	2185	PL_laststype = data->laststype;
1552	PL_laststatval = data->laststatval;	2186	PL_laststatval = data->laststatval;
1553	PL_statcache = data->statcache;	2187	PL_statcache = data->statcache;
1554	}	2188	}
1555		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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