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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.185 by root, Thu Oct 4 19:35:08 2007 UTC vs.
Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
8		10
9	#include "patchlevel.h"	11	#include "patchlevel.h"
10		12
11	#include <stdio.h>	13	#include <stdio.h>
12	#include <errno.h>	14	#include <errno.h>
13	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
14		25
15	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
16	# include <unistd.h>	27	# include <unistd.h>
17	# include <sys/mman.h>	28	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
41	#else	52	#else
42	# define REGISTER_STACK(cctx,start,end)	53	# define REGISTER_STACK(cctx,start,end)
43	#endif	54	#endif
44		55
45	/* the maximum number of idle cctx that will be pooled */	56	/* the maximum number of idle cctx that will be pooled */
46	#define MAX_IDLE_CCTX 8	57	static int cctx_max_idle = 4;
47		58
48	#define PERL_VERSION_ATLEAST(a,b,c) \	59	#define PERL_VERSION_ATLEAST(a,b,c) \
49	(PERL_REVISION > (a) \	60	(PERL_REVISION > (a) \
50	|| (PERL_REVISION == (a) \	61	|| (PERL_REVISION == (a) \
51	&& (PERL_VERSION > (b) \	62	&& (PERL_VERSION > (b) \
…		…
70	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
72	# endif	83	# endif
73	#endif	84	#endif
74		85
		86	/* 5.11 */
		87	#ifndef CxHASARGS
		88	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		89	#endif
		90
		91	/* 5.10.0 */
		92	#ifndef SvREFCNT_inc_NN
		93	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		94	#endif
		95
		96	/* 5.8.8 */
		97	#ifndef GV_NOTQUAL
		98	# define GV_NOTQUAL 0
		99	#endif
		100	#ifndef newSV
		101	# define newSV(l) NEWSV(0,l)
		102	#endif
		103
75	/* 5.8.7 */	104	/* 5.8.7 */
76	#ifndef SvRV_set	105	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	107	#endif
79		108
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		128
100	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		132	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	133	#else
104	# define attribute(x)	134	# define attribute(x)
105	# define BARRIER	135	# define BARRIER
		136	# define expect(expr,value) (expr)
106	#endif	137	#endif
		138
		139	#define expect_false(expr) expect ((expr) != 0, 0)
		140	#define expect_true(expr) expect ((expr) != 0, 1)
107		141
108	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
109		143
110	#include "CoroAPI.h"	144	#include "CoroAPI.h"
111		145
112	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
113	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
116	#else	155	#else
		156
117	# define LOCK (void)0	157	# define LOCK (void)0
118	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
119	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
120		166
121	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
122	struct io_state	168	struct io_state
123	{	169	{
		170	AV *res;
124	int errorno;	171	int errorno;
125	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
126	int laststatval;	173	int laststatval;
127	Stat_t statcache;	174	Stat_t statcache;
128	};	175	};
129		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
130	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		186	static volatile char next_has_throw; /* speedup flag for next->throw check */
136		187
137	static GV *irsgv; /* $/ */	188	static GV *irsgv; /* $/ */
		189	static GV *stdoutgv; /* *STDOUT */
		190	static SV *rv_diehook;
		191	static SV *rv_warnhook;
		192	static HV *hv_sig; /* %SIG */
138		193
139	/* async_pool helper stuff */	194	/* async_pool helper stuff */
140	static SV *sv_pool_rss;	195	static SV *sv_pool_rss;
141	static SV *sv_pool_size;	196	static SV *sv_pool_size;
142	static AV *av_async_pool;	197	static AV *av_async_pool;
		198
		199	/* Coro::AnyEvent */
		200	static SV *sv_activity;
143		201
144	static struct coro_cctx *cctx_first;	202	static struct coro_cctx *cctx_first;
145	static int cctx_count, cctx_idle;	203	static int cctx_count, cctx_idle;
146		204
147	enum {	205	enum {
…		…
165	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	223	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
166	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	224	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
167	JMPENV *top_env;	225	JMPENV *top_env;
168	coro_context cctx;	226	coro_context cctx;
169		227
		228	U32 gen;
170	#if CORO_USE_VALGRIND	229	#if CORO_USE_VALGRIND
171	int valgrind_id;	230	int valgrind_id;
172	#endif	231	#endif
173	unsigned char flags;	232	unsigned char flags;
174	} coro_cctx;	233	} coro_cctx;
…		…
178	CF_READY = 0x0002, /* coroutine is ready */	237	CF_READY = 0x0002, /* coroutine is ready */
179	CF_NEW = 0x0004, /* has never been switched to */	238	CF_NEW = 0x0004, /* has never been switched to */
180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	239	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181	};	240	};
182		241
		242	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		243	typedef struct {
		244	SV *defsv;
		245	AV *defav;
		246	SV *errsv;
		247	SV *irsgv;
		248	#define VAR(name,type) type name;
		249	# include "state.h"
		250	#undef VAR
		251	} perl_slots;
		252
		253	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		254
183	/* this is a structure representing a perl-level coroutine */	255	/* this is a structure representing a perl-level coroutine */
184	struct coro {	256	struct coro {
185	/* the c coroutine allocated to this perl coroutine, if any */	257	/* the c coroutine allocated to this perl coroutine, if any */
186	coro_cctx *cctx;	258	coro_cctx *cctx;
187		259
		260	/* process data */
		261	AV *mainstack;
		262	perl_slots *slot; /* basically the saved sp */
		263
188	/* data associated with this coroutine (initial args) */	264	AV *args; /* data associated with this coroutine (initial args) */
189	AV *args;	265	int refcnt; /* coroutines are refcounted, yes */
190	int refcnt;
191	int flags; /* CF_ flags */	266	int flags; /* CF_ flags */
192		267	HV *hv; /* the perl hash associated with this coro, if any */
193	/* optionally saved, might be zero */
194	AV *defav; /* @_ */
195	SV *defsv; /* $_ */
196	SV *errsv; /* $@ */
197	SV *deffh; /* default filehandle */
198	SV *irssv; /* $/ */
199	SV *irssv_sv; /* real $/ cache */
200
201	#define VAR(name,type) type name;
202	# include "state.h"
203	#undef VAR
204		268
205	/* statistics */	269	/* statistics */
206	int usecount; /* number of transfers to this coro */	270	int usecount; /* number of transfers to this coro */
207		271
208	/* coro process data */	272	/* coro process data */
209	int prio;	273	int prio;
210	//SV *throw;	274	SV *throw; /* exception to be thrown */
211		275
212	/* async_pool */	276	/* async_pool */
213	SV *saved_deffh;	277	SV *saved_deffh;
214		278
215	/* linked list */	279	/* linked list */
216	struct coro *next, *prev;	280	struct coro *next, *prev;
217	HV *hv; /* the perl hash associated with this coro, if any */
218	};	281	};
219		282
220	typedef struct coro *Coro__State;	283	typedef struct coro *Coro__State;
221	typedef struct coro *Coro__State_or_hashref;	284	typedef struct coro *Coro__State_or_hashref;
222		285
…		…
229	#define PRIO_IDLE -3	292	#define PRIO_IDLE -3
230	#define PRIO_MIN -4	293	#define PRIO_MIN -4
231		294
232	/* for Coro.pm */	295	/* for Coro.pm */
233	static SV *coro_current;	296	static SV *coro_current;
		297	static SV *coro_readyhook;
234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	298	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
235	static int coro_nready;	299	static int coro_nready;
236	static struct coro *coro_first;	300	static struct coro *coro_first;
237		301
238	/** lowlevel stuff **********************************************************/	302	/** lowlevel stuff **********************************************************/
239		303
		304	static SV *
		305	coro_get_sv (pTHX_ const char *name, int create)
		306	{
		307	#if PERL_VERSION_ATLEAST (5,10,0)
		308	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		309	get_sv (name, create);
		310	#endif
		311	return get_sv (name, create);
		312	}
		313
		314	static AV *
		315	coro_get_av (pTHX_ const char *name, int create)
		316	{
		317	#if PERL_VERSION_ATLEAST (5,10,0)
		318	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		319	get_av (name, create);
		320	#endif
		321	return get_av (name, create);
		322	}
		323
		324	static HV *
		325	coro_get_hv (pTHX_ const char *name, int create)
		326	{
		327	#if PERL_VERSION_ATLEAST (5,10,0)
		328	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		329	get_hv (name, create);
		330	#endif
		331	return get_hv (name, create);
		332	}
		333
240	static AV *	334	static AV *
241	coro_clone_padlist (pTHX_ CV *cv)	335	coro_clone_padlist (pTHX_ CV *cv)
242	{	336	{
243	AV *padlist = CvPADLIST (cv);	337	AV *padlist = CvPADLIST (cv);
244	AV *newpadlist, *newpad;	338	AV *newpadlist, *newpad;
245		339
246	newpadlist = newAV ();	340	newpadlist = newAV ();
247	AvREAL_off (newpadlist);	341	AvREAL_off (newpadlist);
248	#if PERL_VERSION_ATLEAST (5,9,0)	342	#if PERL_VERSION_ATLEAST (5,10,0)
249	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	343	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
250	#else	344	#else
251	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	345	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
252	#endif	346	#endif
253	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	347	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
254	--AvFILLp (padlist);	348	--AvFILLp (padlist);
255		349
256	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	350	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
257	av_store (newpadlist, 1, (SV *)newpad);	351	av_store (newpadlist, 1, (SV *)newpad);
258		352
259	return newpadlist;	353	return newpadlist;
260	}	354	}
261		355
…		…
291		385
292	/* casting is fun. */	386	/* casting is fun. */
293	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	387	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
294	free_padlist (aTHX_ padlist);	388	free_padlist (aTHX_ padlist);
295		389
296	SvREFCNT_dec (av);	390	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
297		391
298	return 0;	392	return 0;
299	}	393	}
300		394
301	#define PERL_MAGIC_coro PERL_MAGIC_ext	395	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		396	#define CORO_MAGIC_type_state PERL_MAGIC_ext
302		397
303	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	398	static MGVTBL coro_cv_vtbl = {
		399	0, 0, 0, 0,
		400	coro_cv_free
		401	};
304		402
305	#define CORO_MAGIC(cv) \	403	#define CORO_MAGIC(sv, type) \
306	SvMAGIC (cv) \	404	SvMAGIC (sv) \
307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	405	? SvMAGIC (sv)->mg_type == type \
308	? SvMAGIC (cv) \	406	? SvMAGIC (sv) \
309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	407	: mg_find (sv, type) \
310	: 0	408	: 0
		409
		410	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		411	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
311		412
312	static struct coro *	413	static struct coro *
313	SvSTATE_ (pTHX_ SV *coro)	414	SvSTATE_ (pTHX_ SV *coro)
314	{	415	{
315	HV *stash;	416	HV *stash;
316	MAGIC *mg;	417	MAGIC *mg;
317		418
318	if (SvROK (coro))	419	if (SvROK (coro))
319	coro = SvRV (coro);	420	coro = SvRV (coro);
320		421
321	if (SvTYPE (coro) != SVt_PVHV)	422	if (expect_false (SvTYPE (coro) != SVt_PVHV))
322	croak ("Coro::State object required");	423	croak ("Coro::State object required");
323		424
324	stash = SvSTASH (coro);	425	stash = SvSTASH (coro);
325	if (stash != coro_stash && stash != coro_state_stash)	426	if (expect_false (stash != coro_stash && stash != coro_state_stash))
326	{	427	{
327	/* very slow, but rare, check */	428	/* very slow, but rare, check */
328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	429	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329	croak ("Coro::State object required");	430	croak ("Coro::State object required");
330	}	431	}
331		432
332	mg = CORO_MAGIC (coro);	433	mg = CORO_MAGIC_state (coro);
333	return (struct coro *)mg->mg_ptr;	434	return (struct coro *)mg->mg_ptr;
334	}	435	}
335		436
336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	437	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
337		438
338	/* the next two functions merely cache the padlists */	439	/* the next two functions merely cache the padlists */
339	static void	440	static void
340	get_padlist (pTHX_ CV *cv)	441	get_padlist (pTHX_ CV *cv)
341	{	442	{
342	MAGIC *mg = CORO_MAGIC (cv);	443	MAGIC *mg = CORO_MAGIC_cv (cv);
343	AV *av;	444	AV *av;
344		445
345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	446	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	447	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
347	else	448	else
348	{	449	{
349	#if CORO_PREFER_PERL_FUNCTIONS	450	#if CORO_PREFER_PERL_FUNCTIONS
350	/* this is probably cleaner, but also slower? */	451	/* this is probably cleaner? but also slower! */
		452	/* in practise, it seems to be less stable */
351	CV *cp = Perl_cv_clone (cv);	453	CV *cp = Perl_cv_clone (cv);
352	CvPADLIST (cv) = CvPADLIST (cp);	454	CvPADLIST (cv) = CvPADLIST (cp);
353	CvPADLIST (cp) = 0;	455	CvPADLIST (cp) = 0;
354	SvREFCNT_dec (cp);	456	SvREFCNT_dec (cp);
355	#else	457	#else
…		…
359	}	461	}
360		462
361	static void	463	static void
362	put_padlist (pTHX_ CV *cv)	464	put_padlist (pTHX_ CV *cv)
363	{	465	{
364	MAGIC *mg = CORO_MAGIC (cv);	466	MAGIC *mg = CORO_MAGIC_cv (cv);
365	AV *av;	467	AV *av;
366		468
367	if (!mg)	469	if (expect_false (!mg))
368	{	470	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
369	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
370	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
371	mg->mg_virtual = &vtbl_coro;
372	mg->mg_obj = (SV *)newAV ();
373	}
374		471
375	av = (AV *)mg->mg_obj;	472	av = (AV *)mg->mg_obj;
376		473
377	if (AvFILLp (av) >= AvMAX (av))	474	if (expect_false (AvFILLp (av) >= AvMAX (av)))
378	av_extend (av, AvMAX (av) + 1);	475	av_extend (av, AvMAX (av) + 1);
379		476
380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	477	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
381	}	478	}
382		479
383	/** load & save, init *******************************************************/	480	/** load & save, init *******************************************************/
384		481
385	static void	482	static void
386	load_perl (pTHX_ Coro__State c)	483	load_perl (pTHX_ Coro__State c)
387	{	484	{
		485	perl_slots *slot = c->slot;
		486	c->slot = 0;
		487
		488	PL_mainstack = c->mainstack;
		489
		490	GvSV (PL_defgv) = slot->defsv;
		491	GvAV (PL_defgv) = slot->defav;
		492	GvSV (PL_errgv) = slot->errsv;
		493	GvSV (irsgv) = slot->irsgv;
		494
388	#define VAR(name,type) PL_ ## name = c->name;	495	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	496	# include "state.h"
390	#undef VAR	497	#undef VAR
391
392	GvSV (PL_defgv) = c->defsv;
393	GvAV (PL_defgv) = c->defav;
394	GvSV (PL_errgv) = c->errsv;
395	GvSV (irsgv) = c->irssv_sv;
396		498
397	{	499	{
398	dSP;	500	dSP;
		501
399	CV *cv;	502	CV *cv;
400		503
401	/* now do the ugly restore mess */	504	/* now do the ugly restore mess */
402	while ((cv = (CV *)POPs))	505	while (expect_true (cv = (CV *)POPs))
403	{	506	{
404	put_padlist (aTHX_ cv); /* mark this padlist as available */	507	put_padlist (aTHX_ cv); /* mark this padlist as available */
405	CvDEPTH (cv) = PTR2IV (POPs);	508	CvDEPTH (cv) = PTR2IV (POPs);
406	CvPADLIST (cv) = (AV *)POPs;	509	CvPADLIST (cv) = (AV *)POPs;
407	}	510	}
…		…
426		529
427	XPUSHs (Nullsv);	530	XPUSHs (Nullsv);
428	/* this loop was inspired by pp_caller */	531	/* this loop was inspired by pp_caller */
429	for (;;)	532	for (;;)
430	{	533	{
431	while (cxix >= 0)	534	while (expect_true (cxix >= 0))
432	{	535	{
433	PERL_CONTEXT *cx = &ccstk[cxix--];	536	PERL_CONTEXT *cx = &ccstk[cxix--];
434		537
435	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	538	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
436	{	539	{
437	CV *cv = cx->blk_sub.cv;	540	CV *cv = cx->blk_sub.cv;
438		541
439	if (CvDEPTH (cv))	542	if (expect_true (CvDEPTH (cv)))
440	{	543	{
441	EXTEND (SP, 3);	544	EXTEND (SP, 3);
442	PUSHs ((SV *)CvPADLIST (cv));	545	PUSHs ((SV *)CvPADLIST (cv));
443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	546	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
444	PUSHs ((SV *)cv);	547	PUSHs ((SV *)cv);
445		548
446	CvDEPTH (cv) = 0;	549	CvDEPTH (cv) = 0;
447	get_padlist (aTHX_ cv);	550	get_padlist (aTHX_ cv);
448	}	551	}
449	}	552	}
450	}	553	}
451		554
452	if (top_si->si_type == PERLSI_MAIN)	555	if (expect_true (top_si->si_type == PERLSI_MAIN))
453	break;	556	break;
454		557
455	top_si = top_si->si_prev;	558	top_si = top_si->si_prev;
456	ccstk = top_si->si_cxstack;	559	ccstk = top_si->si_cxstack;
457	cxix = top_si->si_cxix;	560	cxix = top_si->si_cxix;
458	}	561	}
459		562
460	PUTBACK;	563	PUTBACK;
461	}	564	}
462		565
		566	/* allocate some space on the context stack for our purposes */
		567	/* we manually unroll here, as usually 2 slots is enough */
		568	if (SLOT_COUNT >= 1) CXINC;
		569	if (SLOT_COUNT >= 2) CXINC;
		570	if (SLOT_COUNT >= 3) CXINC;
		571	{
		572	int i;
		573	for (i = 3; i < SLOT_COUNT; ++i)
		574	CXINC;
		575	}
		576	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		577
		578	c->mainstack = PL_mainstack;
		579
		580	{
		581	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		582
463	c->defav = GvAV (PL_defgv);	583	slot->defav = GvAV (PL_defgv);
464	c->defsv = DEFSV;	584	slot->defsv = DEFSV;
465	c->errsv = ERRSV;	585	slot->errsv = ERRSV;
466	c->irssv_sv = GvSV (irsgv);	586	slot->irsgv = GvSV (irsgv);
467		587
468	#define VAR(name,type)c->name = PL_ ## name;	588	#define VAR(name,type) slot->name = PL_ ## name;
469	# include "state.h"	589	# include "state.h"
470	#undef VAR	590	#undef VAR
		591	}
471	}	592	}
472		593
473	/*	594	/*
474	* allocate various perl stacks. This is an exact copy	595	* allocate various perl stacks. This is an exact copy
475	* of perl.c:init_stacks, except that it uses less memory	596	* of perl.c:init_stacks, except that it uses less memory
…		…
480	# define coro_init_stacks init_stacks	601	# define coro_init_stacks init_stacks
481	#else	602	#else
482	static void	603	static void
483	coro_init_stacks (pTHX)	604	coro_init_stacks (pTHX)
484	{	605	{
485	PL_curstackinfo = new_stackinfo(64, 6);	606	PL_curstackinfo = new_stackinfo(32, 8);
486	PL_curstackinfo->si_type = PERLSI_MAIN;	607	PL_curstackinfo->si_type = PERLSI_MAIN;
487	PL_curstack = PL_curstackinfo->si_stack;	608	PL_curstack = PL_curstackinfo->si_stack;
488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	609	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
489		610
490	PL_stack_base = AvARRAY(PL_curstack);	611	PL_stack_base = AvARRAY(PL_curstack);
491	PL_stack_sp = PL_stack_base;	612	PL_stack_sp = PL_stack_base;
492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	613	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
493		614
494	New(50,PL_tmps_stack,64,SV*);	615	New(50,PL_tmps_stack,32,SV*);
495	PL_tmps_floor = -1;	616	PL_tmps_floor = -1;
496	PL_tmps_ix = -1;	617	PL_tmps_ix = -1;
497	PL_tmps_max = 64;	618	PL_tmps_max = 32;
498		619
499	New(54,PL_markstack,16,I32);	620	New(54,PL_markstack,16,I32);
500	PL_markstack_ptr = PL_markstack;	621	PL_markstack_ptr = PL_markstack;
501	PL_markstack_max = PL_markstack + 16;	622	PL_markstack_max = PL_markstack + 16;
502		623
503	#ifdef SET_MARK_OFFSET	624	#ifdef SET_MARK_OFFSET
504	SET_MARK_OFFSET;	625	SET_MARK_OFFSET;
505	#endif	626	#endif
506		627
507	New(54,PL_scopestack,16,I32);	628	New(54,PL_scopestack,8,I32);
508	PL_scopestack_ix = 0;	629	PL_scopestack_ix = 0;
509	PL_scopestack_max = 16;	630	PL_scopestack_max = 8;
510		631
511	New(54,PL_savestack,64,ANY);	632	New(54,PL_savestack,24,ANY);
512	PL_savestack_ix = 0;	633	PL_savestack_ix = 0;
513	PL_savestack_max = 64;	634	PL_savestack_max = 24;
514		635
515	#if !PERL_VERSION_ATLEAST (5,9,0)	636	#if !PERL_VERSION_ATLEAST (5,10,0)
516	New(54,PL_retstack,4,OP*);	637	New(54,PL_retstack,4,OP*);
517	PL_retstack_ix = 0;	638	PL_retstack_ix = 0;
518	PL_retstack_max = 4;	639	PL_retstack_max = 4;
519	#endif	640	#endif
520	}	641	}
…		…
522		643
523	/*	644	/*
524	* destroy the stacks, the callchain etc...	645	* destroy the stacks, the callchain etc...
525	*/	646	*/
526	static void	647	static void
527	coro_destroy_stacks (pTHX)	648	coro_destruct_stacks (pTHX)
528	{	649	{
529	while (PL_curstackinfo->si_next)	650	while (PL_curstackinfo->si_next)
530	PL_curstackinfo = PL_curstackinfo->si_next;	651	PL_curstackinfo = PL_curstackinfo->si_next;
531		652
532	while (PL_curstackinfo)	653	while (PL_curstackinfo)
…		…
543		664
544	Safefree (PL_tmps_stack);	665	Safefree (PL_tmps_stack);
545	Safefree (PL_markstack);	666	Safefree (PL_markstack);
546	Safefree (PL_scopestack);	667	Safefree (PL_scopestack);
547	Safefree (PL_savestack);	668	Safefree (PL_savestack);
548	#if !PERL_VERSION_ATLEAST (5,9,0)	669	#if !PERL_VERSION_ATLEAST (5,10,0)
549	Safefree (PL_retstack);	670	Safefree (PL_retstack);
550	#endif	671	#endif
551	}	672	}
552		673
553	static size_t	674	static size_t
…		…
555	{	676	{
556	size_t rss = sizeof (*coro);	677	size_t rss = sizeof (*coro);
557		678
558	if (coro->mainstack)	679	if (coro->mainstack)
559	{	680	{
		681	perl_slots tmp_slot;
		682	perl_slots *slot;
		683
560	if (coro->flags & CF_RUNNING)	684	if (coro->flags & CF_RUNNING)
561	{	685	{
		686	slot = &tmp_slot;
		687
562	#define VAR(name,type)coro->name = PL_ ## name;	688	#define VAR(name,type) slot->name = PL_ ## name;
563	# include "state.h"	689	# include "state.h"
564	#undef VAR	690	#undef VAR
565	}	691	}
		692	else
		693	slot = coro->slot;
566		694
		695	if (slot)
		696	{
567	rss += sizeof (coro->curstackinfo);	697	rss += sizeof (slot->curstackinfo);
568	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	698	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
570	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	699	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
571	rss += coro->tmps_max * sizeof (SV *);	700	rss += slot->tmps_max * sizeof (SV *);
572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	701	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
573	rss += coro->scopestack_max * sizeof (I32);	702	rss += slot->scopestack_max * sizeof (I32);
574	rss += coro->savestack_max * sizeof (ANY);	703	rss += slot->savestack_max * sizeof (ANY);
575		704
576	#if !PERL_VERSION_ATLEAST (5,9,0)	705	#if !PERL_VERSION_ATLEAST (5,10,0)
577	rss += coro->retstack_max * sizeof (OP *);	706	rss += slot->retstack_max * sizeof (OP *);
578	#endif	707	#endif
		708	}
579	}	709	}
580		710
581	return rss;	711	return rss;
582	}	712	}
583		713
584	/** coroutine stack handling ************************************************/	714	/** coroutine stack handling ************************************************/
		715
		716	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		717	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		718	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		719
		720	/* apparently < 5.8.8 */
		721	#ifndef MgPV_nolen_const
		722	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		723	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		724	(const char*)(mg)->mg_ptr)
		725	#endif
		726
		727	/*
		728	* This overrides the default magic get method of %SIG elements.
		729	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		730	* and instead of tryign to save and restore the hash elements, we just provide
		731	* readback here.
		732	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		733	* not expecting this to actually change the hook. This is a potential problem
		734	* when a schedule happens then, but we ignore this.
		735	*/
		736	static int
		737	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		738	{
		739	const char *s = MgPV_nolen_const (mg);
		740
		741	if (*s == '_')
		742	{
		743	SV **svp = 0;
		744
		745	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		746	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		747
		748	if (svp)
		749	{
		750	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		751	return 0;
		752	}
		753	}
		754
		755	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		756	}
		757
		758	static int
		759	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		760	{
		761	const char *s = MgPV_nolen_const (mg);
		762
		763	if (*s == '_')
		764	{
		765	SV **svp = 0;
		766
		767	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		768	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		769
		770	if (svp)
		771	{
		772	SV *old = *svp;
		773	*svp = 0;
		774	SvREFCNT_dec (old);
		775	return 0;
		776	}
		777	}
		778
		779	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		780	}
		781
		782	static int
		783	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		784	{
		785	const char *s = MgPV_nolen_const (mg);
		786
		787	if (*s == '_')
		788	{
		789	SV **svp = 0;
		790
		791	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		792	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		793
		794	if (svp)
		795	{
		796	SV *old = *svp;
		797	*svp = newSVsv (sv);
		798	SvREFCNT_dec (old);
		799	return 0;
		800	}
		801	}
		802
		803	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		804	}
585		805
586	static void	806	static void
587	coro_setup (pTHX_ struct coro *coro)	807	coro_setup (pTHX_ struct coro *coro)
588	{	808	{
589	/*	809	/*
…		…
594	PL_runops = RUNOPS_DEFAULT;	814	PL_runops = RUNOPS_DEFAULT;
595	PL_curcop = &PL_compiling;	815	PL_curcop = &PL_compiling;
596	PL_in_eval = EVAL_NULL;	816	PL_in_eval = EVAL_NULL;
597	PL_comppad = 0;	817	PL_comppad = 0;
598	PL_curpm = 0;	818	PL_curpm = 0;
		819	PL_curpad = 0;
599	PL_localizing = 0;	820	PL_localizing = 0;
600	PL_dirty = 0;	821	PL_dirty = 0;
601	PL_restartop = 0;	822	PL_restartop = 0;
		823	#if PERL_VERSION_ATLEAST (5,10,0)
		824	PL_parser = 0;
		825	#endif
		826
		827	/* recreate the die/warn hooks */
		828	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		829	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
602		830
603	GvSV (PL_defgv) = NEWSV (0, 0);	831	GvSV (PL_defgv) = newSV (0);
604	GvAV (PL_defgv) = coro->args; coro->args = 0;	832	GvAV (PL_defgv) = coro->args; coro->args = 0;
605	GvSV (PL_errgv) = NEWSV (0, 0);	833	GvSV (PL_errgv) = newSV (0);
606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	834	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
607	PL_rs = newSVsv (GvSV (irsgv));	835	PL_rs = newSVsv (GvSV (irsgv));
608		836	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
609	{
610	IO *io = newIO ();
611	PL_defoutgv = newGVgen ("Coro");
612	GvIOp(PL_defoutgv) = io;
613	IoTYPE (io) = IoTYPE_WRONLY;
614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
615	IoFLAGS (io) |= IOf_FLUSH;
616	}
617		837
618	{	838	{
619	dSP;	839	dSP;
620	LOGOP myop;	840	LOGOP myop;
621		841
622	Zero (&myop, 1, LOGOP);	842	Zero (&myop, 1, LOGOP);
623	myop.op_next = Nullop;	843	myop.op_next = Nullop;
624	myop.op_flags = OPf_WANT_VOID;	844	myop.op_flags = OPf_WANT_VOID;
625		845
626	PUSHMARK (SP);	846	PUSHMARK (SP);
627	XPUSHs (av_shift (GvAV (PL_defgv)));	847	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
628	PUTBACK;	848	PUTBACK;
629	PL_op = (OP *)&myop;	849	PL_op = (OP *)&myop;
630	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	850	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
631	SPAGAIN;	851	SPAGAIN;
632	}	852	}
633		853
634	ENTER; /* necessary e.g. for dounwind */	854	/* this newly created coroutine might be run on an existing cctx which most
		855	* likely was suspended in set_stacklevel, called from entersub.
		856	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		857	* so we ENTER here for symmetry
		858	*/
		859	ENTER;
635	}	860	}
636		861
637	static void	862	static void
638	coro_destroy (pTHX_ struct coro *coro)	863	coro_destruct (pTHX_ struct coro *coro)
639	{	864	{
640	if (!IN_DESTRUCT)	865	if (!IN_DESTRUCT)
641	{	866	{
642	/* restore all saved variables and stuff */	867	/* restore all saved variables and stuff */
643	LEAVE_SCOPE (0);	868	LEAVE_SCOPE (0);
…		…
659	SvREFCNT_dec (GvSV (PL_errgv));	884	SvREFCNT_dec (GvSV (PL_errgv));
660	SvREFCNT_dec (PL_defoutgv);	885	SvREFCNT_dec (PL_defoutgv);
661	SvREFCNT_dec (PL_rs);	886	SvREFCNT_dec (PL_rs);
662	SvREFCNT_dec (GvSV (irsgv));	887	SvREFCNT_dec (GvSV (irsgv));
663		888
		889	SvREFCNT_dec (PL_diehook);
		890	SvREFCNT_dec (PL_warnhook);
		891
664	SvREFCNT_dec (coro->saved_deffh);	892	SvREFCNT_dec (coro->saved_deffh);
665	//SvREFCNT_dec (coro->throw);	893	SvREFCNT_dec (coro->throw);
666		894
667	coro_destroy_stacks (aTHX);	895	coro_destruct_stacks (aTHX);
668	}	896	}
669		897
670	static void	898	static void
671	free_coro_mortal (pTHX)	899	free_coro_mortal (pTHX)
672	{	900	{
673	if (coro_mortal)	901	if (expect_true (coro_mortal))
674	{	902	{
675	SvREFCNT_dec (coro_mortal);	903	SvREFCNT_dec (coro_mortal);
676	coro_mortal = 0;	904	coro_mortal = 0;
677	}	905	}
678	}	906	}
…		…
707	bot = PL_stack_base + cx->blk_oldsp + 1;	935	bot = PL_stack_base + cx->blk_oldsp + 1;
708	top = cx->blk_gimme == G_ARRAY ? SP + 1	936	top = cx->blk_gimme == G_ARRAY ? SP + 1
709	: cx->blk_gimme == G_SCALAR ? bot + 1	937	: cx->blk_gimme == G_SCALAR ? bot + 1
710	: bot;	938	: bot;
711		939
		940	av_extend (av, top - bot);
712	while (bot < top)	941	while (bot < top)
713	av_push (av, SvREFCNT_inc (*bot++));	942	av_push (av, SvREFCNT_inc_NN (*bot++));
714		943
715	PL_runops = RUNOPS_DEFAULT;	944	PL_runops = RUNOPS_DEFAULT;
716	ENTER;	945	ENTER;
717	SAVETMPS;	946	SAVETMPS;
718	EXTEND (SP, 3);	947	EXTEND (SP, 3);
…		…
756	SAVETMPS;	985	SAVETMPS;
757	EXTEND (SP, 3);	986	EXTEND (SP, 3);
758	PUSHMARK (SP);	987	PUSHMARK (SP);
759	PUSHs (&PL_sv_yes);	988	PUSHs (&PL_sv_yes);
760	PUSHs (fullname);	989	PUSHs (fullname);
761	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	990	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
762	PUTBACK;	991	PUTBACK;
763	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	992	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
764	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	993	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
765	SPAGAIN;	994	SPAGAIN;
766	FREETMPS;	995	FREETMPS;
…		…
801	}	1030	}
802		1031
803	/* inject a fake call to Coro::State::_cctx_init into the execution */	1032	/* inject a fake call to Coro::State::_cctx_init into the execution */
804	/* _cctx_init should be careful, as it could be called at almost any time */	1033	/* _cctx_init should be careful, as it could be called at almost any time */
805	/* during execution of a perl program */	1034	/* during execution of a perl program */
		1035	/* also initialises PL_top_env */
806	static void NOINLINE	1036	static void NOINLINE
807	prepare_cctx (pTHX_ coro_cctx *cctx)	1037	cctx_prepare (pTHX_ coro_cctx *cctx)
808	{	1038	{
809	dSP;	1039	dSP;
810	LOGOP myop;	1040	LOGOP myop;
811		1041
812	PL_top_env = &PL_start_env;	1042	PL_top_env = &PL_start_env;
…		…
826	PL_op = (OP *)&myop;	1056	PL_op = (OP *)&myop;
827	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1057	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
828	SPAGAIN;	1058	SPAGAIN;
829	}	1059	}
830		1060
		1061	/* the tail of transfer: execute stuff we can onyl do afetr a transfer */
		1062	static void
		1063	transfer_tail (void)
		1064	{
		1065	UNLOCK;
		1066
		1067	if (expect_false (next_has_throw))
		1068	{
		1069	struct coro *coro = SvSTATE (coro_current);
		1070
		1071	if (coro->throw)
		1072	{
		1073	SV *exception = coro->throw;
		1074	coro->throw = 0;
		1075	sv_setsv (ERRSV, exception);
		1076	croak (0);
		1077	}
		1078	}
		1079	}
		1080
831	/*	1081	/*
832	* this is a _very_ stripped down perl interpreter ;)	1082	* this is a _very_ stripped down perl interpreter ;)
833	*/	1083	*/
834	static void	1084	static void
835	coro_run (void *arg)	1085	cctx_run (void *arg)
836	{	1086	{
		1087	#ifdef USE_ITHREADS
		1088	# if CORO_PTHREAD
		1089	PERL_SET_CONTEXT (coro_thx);
		1090	# endif
		1091	#endif
		1092	{
837	dTHX;	1093	dTHX;
838		1094
839	/* coro_run is the alternative tail of transfer(), so unlock here. */
840	UNLOCK;
841
842	/* we now skip the entersub that lead to transfer() */	1095	/* we now skip the entersub that lead to transfer () */
843	PL_op = PL_op->op_next;	1096	PL_op = PL_op->op_next;
844		1097
845	/* inject a fake subroutine call to cctx_init */	1098	/* inject a fake subroutine call to cctx_init */
846	prepare_cctx (aTHX_ (coro_cctx *)arg);	1099	cctx_prepare (aTHX_ (coro_cctx *)arg);
847		1100
		1101	/* cctx_run is the alternative tail of transfer () */
		1102	transfer_tail ();
		1103
848	/* somebody or something will hit me for both perl_run and PL_restartop */	1104	/* somebody or something will hit me for both perl_run and PL_restartop */
849	PL_restartop = PL_op;	1105	PL_restartop = PL_op;
850	perl_run (PL_curinterp);	1106	perl_run (PL_curinterp);
851		1107
852	/*	1108	/*
853	* If perl-run returns we assume exit() was being called or the coro	1109	* If perl-run returns we assume exit() was being called or the coro
854	* fell off the end, which seems to be the only valid (non-bug)	1110	* fell off the end, which seems to be the only valid (non-bug)
855	* reason for perl_run to return. We try to exit by jumping to the	1111	* reason for perl_run to return. We try to exit by jumping to the
856	* bootstrap-time "top" top_env, as we cannot restore the "main"	1112	* bootstrap-time "top" top_env, as we cannot restore the "main"
857	* coroutine as Coro has no such concept	1113	* coroutine as Coro has no such concept
858	*/	1114	*/
859	PL_top_env = main_top_env;	1115	PL_top_env = main_top_env;
860	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1116	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1117	}
861	}	1118	}
862		1119
863	static coro_cctx *	1120	static coro_cctx *
864	cctx_new ()	1121	cctx_new ()
865	{	1122	{
866	coro_cctx *cctx;	1123	coro_cctx *cctx;
		1124
		1125	++cctx_count;
		1126	New (0, cctx, 1, coro_cctx);
		1127
		1128	cctx->gen = cctx_gen;
		1129	cctx->flags = 0;
		1130	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */
		1131
		1132	return cctx;
		1133	}
		1134
		1135	/* create a new cctx only suitable as source */
		1136	static coro_cctx *
		1137	cctx_new_empty ()
		1138	{
		1139	coro_cctx *cctx = cctx_new ();
		1140
		1141	cctx->sptr = 0;
		1142	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1143
		1144	return cctx;
		1145	}
		1146
		1147	/* create a new cctx suitable as destination/running a perl interpreter */
		1148	static coro_cctx *
		1149	cctx_new_run ()
		1150	{
		1151	coro_cctx *cctx = cctx_new ();
867	void *stack_start;	1152	void *stack_start;
868	size_t stack_size;	1153	size_t stack_size;
869		1154
870	++cctx_count;
871
872	Newz (0, cctx, 1, coro_cctx);
873
874	#if HAVE_MMAP	1155	#if HAVE_MMAP
875
876	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1156	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
877	/* mmap supposedly does allocate-on-write for us */	1157	/* mmap supposedly does allocate-on-write for us */
878	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1158	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
879		1159
880	if (cctx->sptr != (void *)-1)	1160	if (cctx->sptr != (void *)-1)
881	{	1161	{
…		…
887	cctx->flags |= CC_MAPPED;	1167	cctx->flags |= CC_MAPPED;
888	}	1168	}
889	else	1169	else
890	#endif	1170	#endif
891	{	1171	{
892	cctx->ssize = coro_stacksize * (long)sizeof (long);	1172	cctx->ssize = cctx_stacksize * (long)sizeof (long);
893	New (0, cctx->sptr, coro_stacksize, long);	1173	New (0, cctx->sptr, cctx_stacksize, long);
894		1174
895	if (!cctx->sptr)	1175	if (!cctx->sptr)
896	{	1176	{
897	perror ("FATAL: unable to allocate stack for coroutine");	1177	perror ("FATAL: unable to allocate stack for coroutine");
898	_exit (EXIT_FAILURE);	1178	_exit (EXIT_FAILURE);
…		…
901	stack_start = cctx->sptr;	1181	stack_start = cctx->sptr;
902	stack_size = cctx->ssize;	1182	stack_size = cctx->ssize;
903	}	1183	}
904		1184
905	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1185	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
906	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1186	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
907		1187
908	return cctx;	1188	return cctx;
909	}	1189	}
910		1190
911	static void	1191	static void
…		…
913	{	1193	{
914	if (!cctx)	1194	if (!cctx)
915	return;	1195	return;
916		1196
917	--cctx_count;	1197	--cctx_count;
		1198	coro_destroy (&cctx->cctx);
918		1199
		1200	/* coro_transfer creates new, empty cctx's */
		1201	if (cctx->sptr)
		1202	{
919	#if CORO_USE_VALGRIND	1203	#if CORO_USE_VALGRIND
920	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1204	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
921	#endif	1205	#endif
922		1206
923	#if HAVE_MMAP	1207	#if HAVE_MMAP
924	if (cctx->flags & CC_MAPPED)	1208	if (cctx->flags & CC_MAPPED)
925	munmap (cctx->sptr, cctx->ssize);	1209	munmap (cctx->sptr, cctx->ssize);
926	else	1210	else
927	#endif	1211	#endif
928	Safefree (cctx->sptr);	1212	Safefree (cctx->sptr);
		1213	}
929		1214
930	Safefree (cctx);	1215	Safefree (cctx);
931	}	1216	}
		1217
		1218	/* wether this cctx should be destructed */
		1219	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
932		1220
933	static coro_cctx *	1221	static coro_cctx *
934	cctx_get (pTHX)	1222	cctx_get (pTHX)
935	{	1223	{
936	while (cctx_first)	1224	while (expect_true (cctx_first))
937	{	1225	{
938	coro_cctx *cctx = cctx_first;	1226	coro_cctx *cctx = cctx_first;
939	cctx_first = cctx->next;	1227	cctx_first = cctx->next;
940	--cctx_idle;	1228	--cctx_idle;
941		1229
942	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1230	if (expect_true (!CCTX_EXPIRED (cctx)))
943	return cctx;	1231	return cctx;
944		1232
945	cctx_destroy (cctx);	1233	cctx_destroy (cctx);
946	}	1234	}
947		1235
948	return cctx_new ();	1236	return cctx_new_run ();
949	}	1237	}
950		1238
951	static void	1239	static void
952	cctx_put (coro_cctx *cctx)	1240	cctx_put (coro_cctx *cctx)
953	{	1241	{
		1242	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1243
954	/* free another cctx if overlimit */	1244	/* free another cctx if overlimit */
955	if (cctx_idle >= MAX_IDLE_CCTX)	1245	if (expect_false (cctx_idle >= cctx_max_idle))
956	{	1246	{
957	coro_cctx *first = cctx_first;	1247	coro_cctx *first = cctx_first;
958	cctx_first = first->next;	1248	cctx_first = first->next;
959	--cctx_idle;	1249	--cctx_idle;
960		1250
…		…
966	cctx_first = cctx;	1256	cctx_first = cctx;
967	}	1257	}
968		1258
969	/** coroutine switching *****************************************************/	1259	/** coroutine switching *****************************************************/
970		1260
971	static void NOINLINE	1261	static void
972	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1262	transfer_check (pTHX_ struct coro *prev, struct coro *next)
973	{	1263	{
974	if (prev != next)	1264	if (expect_true (prev != next))
975	{	1265	{
976	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1266	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
977	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1267	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
978		1268
979	if (next->flags & CF_RUNNING)	1269	if (expect_false (next->flags & CF_RUNNING))
980	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1270	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
981		1271
982	if (next->flags & CF_DESTROYED)	1272	if (expect_false (next->flags & CF_DESTROYED))
983	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1273	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
984		1274
		1275	#if !PERL_VERSION_ATLEAST (5,10,0)
985	if (PL_lex_state != LEX_NOTPARSING)	1276	if (expect_false (PL_lex_state != LEX_NOTPARSING))
986	croak ("Coro::State::transfer called while parsing, but this is not supported");	1277	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1278	#endif
987	}	1279	}
988	}	1280	}
989		1281
990	/* always use the TRANSFER macro */	1282	/* always use the TRANSFER macro */
991	static void NOINLINE	1283	static void NOINLINE
992	transfer (pTHX_ struct coro *prev, struct coro *next)	1284	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
993	{	1285	{
994	dSTACKLEVEL;	1286	dSTACKLEVEL;
995		1287
996	/* sometimes transfer is only called to set idle_sp */	1288	/* sometimes transfer is only called to set idle_sp */
997	if (!next)	1289	if (expect_false (!next))
998	{	1290	{
999	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1291	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1000	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1292	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1001	}	1293	}
1002	else if (prev != next)	1294	else if (expect_true (prev != next))
1003	{	1295	{
1004	coro_cctx *prev__cctx;	1296	coro_cctx *prev__cctx;
1005		1297
1006	if (prev->flags & CF_NEW)	1298	if (expect_false (prev->flags & CF_NEW))
1007	{	1299	{
1008	/* create a new empty context */	1300	/* create a new empty/source context */
1009	Newz (0, prev->cctx, 1, coro_cctx);	1301	prev->cctx = cctx_new_empty ();
1010	prev->flags &= ~CF_NEW;	1302	prev->flags &= ~CF_NEW;
1011	prev->flags |= CF_RUNNING;	1303	prev->flags |= CF_RUNNING;
1012	}	1304	}
1013		1305
1014	prev->flags &= ~CF_RUNNING;	1306	prev->flags &= ~CF_RUNNING;
1015	next->flags |= CF_RUNNING;	1307	next->flags |= CF_RUNNING;
1016		1308
1017	LOCK;	1309	LOCK;
1018		1310
		1311	/* first get rid of the old state */
		1312	save_perl (aTHX_ prev);
		1313
1019	if (next->flags & CF_NEW)	1314	if (expect_false (next->flags & CF_NEW))
1020	{	1315	{
1021	/* need to start coroutine */	1316	/* need to start coroutine */
1022	next->flags &= ~CF_NEW;	1317	next->flags &= ~CF_NEW;
1023	/* first get rid of the old state */
1024	save_perl (aTHX_ prev);
1025	/* setup coroutine call */	1318	/* setup coroutine call */
1026	coro_setup (aTHX_ next);	1319	coro_setup (aTHX_ next);
1027	}	1320	}
1028	else	1321	else
1029	{
1030	/* coroutine already started */
1031	save_perl (aTHX_ prev);
1032	load_perl (aTHX_ next);	1322	load_perl (aTHX_ next);
1033	}
1034		1323
1035	prev__cctx = prev->cctx;	1324	prev__cctx = prev->cctx;
1036		1325
		1326	if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
		1327
1037	/* possibly "free" the cctx */	1328	/* possibly "free" the cctx */
1038	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1329	if (expect_true (
		1330	prev__cctx->idle_sp == STACKLEVEL
		1331	&& !(prev__cctx->flags & CC_TRACE)
		1332	&& !force_cctx
		1333	))
1039	{	1334	{
1040	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1335	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1041	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1336	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1042		1337
1043	prev->cctx = 0;	1338	prev->cctx = 0;
1044		1339
		1340	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1341	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1342	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1343	if (!next->cctx)
		1344	next->cctx = cctx_get (aTHX);
		1345
1045	cctx_put (prev__cctx);	1346	cctx_put (prev__cctx);
1046	}	1347	}
1047		1348
1048	++next->usecount;	1349	++next->usecount;
1049		1350
1050	if (!next->cctx)	1351	if (expect_true (!next->cctx))
1051	next->cctx = cctx_get (aTHX);	1352	next->cctx = cctx_get (aTHX);
1052		1353
		1354	next_has_throw = !!next->throw;
		1355
1053	if (prev__cctx != next->cctx)	1356	if (expect_false (prev__cctx != next->cctx))
1054	{	1357	{
1055	prev__cctx->top_env = PL_top_env;	1358	prev__cctx->top_env = PL_top_env;
1056	PL_top_env = next->cctx->top_env;	1359	PL_top_env = next->cctx->top_env;
1057	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1360	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1058	}	1361	}
1059		1362
1060	free_coro_mortal (aTHX);	1363	free_coro_mortal (aTHX);
1061	UNLOCK;	1364	UNLOCK;
		1365
		1366	transfer_tail ();
1062	}	1367	}
1063	}	1368	}
1064		1369
1065	struct transfer_args	1370	struct transfer_args
1066	{	1371	{
1067	struct coro *prev, *next;	1372	struct coro *prev, *next;
1068	};	1373	};
1069		1374
1070	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1375	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1071	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1376	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1072		1377
1073	/** high level stuff ********************************************************/	1378	/** high level stuff ********************************************************/
1074		1379
1075	static int	1380	static int
…		…
1099	croak ("FATAL: tried to destroy currently running coroutine");	1404	croak ("FATAL: tried to destroy currently running coroutine");
1100		1405
1101	save_perl (aTHX_ &temp);	1406	save_perl (aTHX_ &temp);
1102	load_perl (aTHX_ coro);	1407	load_perl (aTHX_ coro);
1103		1408
1104	coro_destroy (aTHX_ coro);	1409	coro_destruct (aTHX_ coro);
1105		1410
1106	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1411	load_perl (aTHX_ &temp);
1107		1412
1108	coro->mainstack = 0;	1413	coro->slot = 0;
1109	}	1414	}
1110		1415
1111	cctx_destroy (coro->cctx);	1416	cctx_destroy (coro->cctx);
1112	SvREFCNT_dec (coro->args);	1417	SvREFCNT_dec (coro->args);
1113		1418
…		…
1169	{	1474	{
1170	dTHX;	1475	dTHX;
1171	struct transfer_args ta;	1476	struct transfer_args ta;
1172		1477
1173	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1478	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1174	TRANSFER (ta);	1479	TRANSFER (ta, 1);
1175	}	1480	}
1176		1481
1177	/** Coro ********************************************************************/	1482	/** Coro ********************************************************************/
1178		1483
1179	static void	1484	static void
…		…
1181	{	1486	{
1182	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1487	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1183	}	1488	}
1184		1489
1185	static SV *	1490	static SV *
1186	coro_deq (pTHX_ int min_prio)	1491	coro_deq (pTHX)
1187	{	1492	{
1188	int prio = PRIO_MAX - PRIO_MIN;	1493	int prio;
1189		1494
1190	min_prio -= PRIO_MIN;
1191	if (min_prio < 0)
1192	min_prio = 0;
1193
1194	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1495	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1195	if (AvFILLp (coro_ready [prio]) >= 0)	1496	if (AvFILLp (coro_ready [prio]) >= 0)
1196	return av_shift (coro_ready [prio]);	1497	return av_shift (coro_ready [prio]);
1197		1498
1198	return 0;	1499	return 0;
1199	}	1500	}
…		…
1201	static int	1502	static int
1202	api_ready (SV *coro_sv)	1503	api_ready (SV *coro_sv)
1203	{	1504	{
1204	dTHX;	1505	dTHX;
1205	struct coro *coro;	1506	struct coro *coro;
		1507	SV *sv_hook;
		1508	void (*xs_hook)(void);
1206		1509
1207	if (SvROK (coro_sv))	1510	if (SvROK (coro_sv))
1208	coro_sv = SvRV (coro_sv);	1511	coro_sv = SvRV (coro_sv);
1209		1512
1210	coro = SvSTATE (coro_sv);	1513	coro = SvSTATE (coro_sv);
…		…
1213	return 0;	1516	return 0;
1214		1517
1215	coro->flags |= CF_READY;	1518	coro->flags |= CF_READY;
1216		1519
1217	LOCK;	1520	LOCK;
		1521
		1522	sv_hook = coro_nready ? 0 : coro_readyhook;
		1523	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1524
1218	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1525	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1219	++coro_nready;	1526	++coro_nready;
		1527
1220	UNLOCK;	1528	UNLOCK;
		1529
		1530	if (sv_hook)
		1531	{
		1532	dSP;
		1533
		1534	ENTER;
		1535	SAVETMPS;
		1536
		1537	PUSHMARK (SP);
		1538	PUTBACK;
		1539	call_sv (sv_hook, G_DISCARD);
		1540	SPAGAIN;
		1541
		1542	FREETMPS;
		1543	LEAVE;
		1544	}
		1545
		1546	if (xs_hook)
		1547	xs_hook ();
1221		1548
1222	return 1;	1549	return 1;
1223	}	1550	}
1224		1551
1225	static int	1552	static int
…		…
1235	SV *prev_sv, *next_sv;	1562	SV *prev_sv, *next_sv;
1236		1563
1237	for (;;)	1564	for (;;)
1238	{	1565	{
1239	LOCK;	1566	LOCK;
1240	next_sv = coro_deq (aTHX_ PRIO_MIN);	1567	next_sv = coro_deq (aTHX);
1241		1568
1242	/* nothing to schedule: call the idle handler */	1569	/* nothing to schedule: call the idle handler */
1243	if (!next_sv)	1570	if (expect_false (!next_sv))
1244	{	1571	{
1245	dSP;	1572	dSP;
1246	UNLOCK;	1573	UNLOCK;
1247		1574
1248	ENTER;	1575	ENTER;
1249	SAVETMPS;	1576	SAVETMPS;
1250		1577
1251	PUSHMARK (SP);	1578	PUSHMARK (SP);
1252	PUTBACK;	1579	PUTBACK;
1253	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1580	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1581	SPAGAIN;
1254		1582
1255	FREETMPS;	1583	FREETMPS;
1256	LEAVE;	1584	LEAVE;
1257	continue;	1585	continue;
1258	}	1586	}
1259		1587
1260	ta->next = SvSTATE (next_sv);	1588	ta->next = SvSTATE (next_sv);
1261		1589
1262	/* cannot transfer to destroyed coros, skip and look for next */	1590	/* cannot transfer to destroyed coros, skip and look for next */
1263	if (ta->next->flags & CF_DESTROYED)	1591	if (expect_false (ta->next->flags & CF_DESTROYED))
1264	{	1592	{
1265	UNLOCK;	1593	UNLOCK;
1266	SvREFCNT_dec (next_sv);	1594	SvREFCNT_dec (next_sv);
1267	/* coro_nready is already taken care of by destroy */	1595	/* coro_nready is already taken care of by destroy */
1268	continue;	1596	continue;
…		…
1313	{	1641	{
1314	dTHX;	1642	dTHX;
1315	struct transfer_args ta;	1643	struct transfer_args ta;
1316		1644
1317	prepare_schedule (aTHX_ &ta);	1645	prepare_schedule (aTHX_ &ta);
1318	TRANSFER (ta);	1646	TRANSFER (ta, 1);
1319	}	1647	}
1320		1648
1321	static int	1649	static int
1322	api_cede (void)	1650	api_cede (void)
1323	{	1651	{
1324	dTHX;	1652	dTHX;
1325	struct transfer_args ta;	1653	struct transfer_args ta;
1326		1654
1327	prepare_cede (aTHX_ &ta);	1655	prepare_cede (aTHX_ &ta);
1328		1656
1329	if (ta.prev != ta.next)	1657	if (expect_true (ta.prev != ta.next))
1330	{	1658	{
1331	TRANSFER (ta);	1659	TRANSFER (ta, 1);
1332	return 1;	1660	return 1;
1333	}	1661	}
1334	else	1662	else
1335	return 0;	1663	return 0;
1336	}	1664	}
…		…
1341	dTHX;	1669	dTHX;
1342	struct transfer_args ta;	1670	struct transfer_args ta;
1343		1671
1344	if (prepare_cede_notself (aTHX_ &ta))	1672	if (prepare_cede_notself (aTHX_ &ta))
1345	{	1673	{
1346	TRANSFER (ta);	1674	TRANSFER (ta, 1);
1347	return 1;	1675	return 1;
1348	}	1676	}
1349	else	1677	else
1350	return 0;	1678	return 0;
1351	}	1679	}
…		…
1357	struct coro *coro = SvSTATE (coro_sv);	1685	struct coro *coro = SvSTATE (coro_sv);
1358		1686
1359	if (flags & CC_TRACE)	1687	if (flags & CC_TRACE)
1360	{	1688	{
1361	if (!coro->cctx)	1689	if (!coro->cctx)
1362	coro->cctx = cctx_new ();	1690	coro->cctx = cctx_new_run ();
1363	else if (!(coro->cctx->flags & CC_TRACE))	1691	else if (!(coro->cctx->flags & CC_TRACE))
1364	croak ("cannot enable tracing on coroutine with custom stack");	1692	croak ("cannot enable tracing on coroutine with custom stack");
1365		1693
1366	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1694	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1367	}	1695	}
…		…
1370	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1698	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1371		1699
1372	if (coro->flags & CF_RUNNING)	1700	if (coro->flags & CF_RUNNING)
1373	PL_runops = RUNOPS_DEFAULT;	1701	PL_runops = RUNOPS_DEFAULT;
1374	else	1702	else
1375	coro->runops = RUNOPS_DEFAULT;	1703	coro->slot->runops = RUNOPS_DEFAULT;
		1704	}
		1705	}
		1706
		1707	#if 0
		1708	static int
		1709	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1710	{
		1711	AV *padlist;
		1712	AV *av = (AV *)mg->mg_obj;
		1713
		1714	abort ();
		1715
		1716	return 0;
		1717	}
		1718
		1719	static MGVTBL coro_gensub_vtbl = {
		1720	0, 0, 0, 0,
		1721	coro_gensub_free
		1722	};
		1723	#endif
		1724
		1725	/*****************************************************************************/
		1726	/* PerlIO::cede */
		1727
		1728	typedef struct
		1729	{
		1730	PerlIOBuf base;
		1731	NV next, every;
		1732	} PerlIOCede;
		1733
		1734	static IV
		1735	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1736	{
		1737	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1738
		1739	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1740	self->next = nvtime () + self->every;
		1741
		1742	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1743	}
		1744
		1745	static SV *
		1746	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1747	{
		1748	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1749
		1750	return newSVnv (self->every);
		1751	}
		1752
		1753	static IV
		1754	PerlIOCede_flush (pTHX_ PerlIO *f)
		1755	{
		1756	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1757	double now = nvtime ();
		1758
		1759	if (now >= self->next)
1376	}	1760	{
		1761	api_cede ();
		1762	self->next = now + self->every;
		1763	}
		1764
		1765	return PerlIOBuf_flush (aTHX_ f);
1377	}	1766	}
		1767
		1768	static PerlIO_funcs PerlIO_cede =
		1769	{
		1770	sizeof(PerlIO_funcs),
		1771	"cede",
		1772	sizeof(PerlIOCede),
		1773	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1774	PerlIOCede_pushed,
		1775	PerlIOBuf_popped,
		1776	PerlIOBuf_open,
		1777	PerlIOBase_binmode,
		1778	PerlIOCede_getarg,
		1779	PerlIOBase_fileno,
		1780	PerlIOBuf_dup,
		1781	PerlIOBuf_read,
		1782	PerlIOBuf_unread,
		1783	PerlIOBuf_write,
		1784	PerlIOBuf_seek,
		1785	PerlIOBuf_tell,
		1786	PerlIOBuf_close,
		1787	PerlIOCede_flush,
		1788	PerlIOBuf_fill,
		1789	PerlIOBase_eof,
		1790	PerlIOBase_error,
		1791	PerlIOBase_clearerr,
		1792	PerlIOBase_setlinebuf,
		1793	PerlIOBuf_get_base,
		1794	PerlIOBuf_bufsiz,
		1795	PerlIOBuf_get_ptr,
		1796	PerlIOBuf_get_cnt,
		1797	PerlIOBuf_set_ptrcnt,
		1798	};
		1799
1378		1800
1379	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1801	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1380		1802
1381	PROTOTYPES: DISABLE	1803	PROTOTYPES: DISABLE
1382		1804
1383	BOOT:	1805	BOOT:
1384	{	1806	{
1385	#ifdef USE_ITHREADS	1807	#ifdef USE_ITHREADS
1386	MUTEX_INIT (&coro_mutex);	1808	MUTEX_INIT (&coro_lock);
		1809	# if CORO_PTHREAD
		1810	coro_thx = PERL_GET_CONTEXT;
		1811	# endif
1387	#endif	1812	#endif
1388	BOOT_PAGESIZE;	1813	BOOT_PAGESIZE;
1389		1814
1390	irsgv = gv_fetchpv ("/", 1, SVt_PV);	1815	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1816	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1817
		1818	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1819	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1820	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1821
		1822	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1823	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1824	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1391		1825
1392	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1826	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1393		1827
1394	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1828	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1395	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1829	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1400	main_top_env = PL_top_env;	1834	main_top_env = PL_top_env;
1401		1835
1402	while (main_top_env->je_prev)	1836	while (main_top_env->je_prev)
1403	main_top_env = main_top_env->je_prev;	1837	main_top_env = main_top_env->je_prev;
1404		1838
1405	coroapi.ver = CORO_API_VERSION;	1839	coroapi.ver = CORO_API_VERSION;
		1840	coroapi.rev = CORO_API_REVISION;
1406	coroapi.transfer = api_transfer;	1841	coroapi.transfer = api_transfer;
		1842
		1843	{
		1844	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1845
		1846	if (!svp) croak ("Time::HiRes is required");
		1847	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1848
		1849	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1850	}
1407		1851
1408	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1852	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1409	}	1853	}
1410		1854
1411	SV *	1855	SV *
1412	new (char *klass, ...)	1856	new (char *klass, ...)
1413	CODE:	1857	CODE:
1414	{	1858	{
1415	struct coro *coro;	1859	struct coro *coro;
		1860	MAGIC *mg;
1416	HV *hv;	1861	HV *hv;
1417	int i;	1862	int i;
1418		1863
1419	Newz (0, coro, 1, struct coro);	1864	Newz (0, coro, 1, struct coro);
1420	coro->args = newAV ();	1865	coro->args = newAV ();
…		…
1423	if (coro_first) coro_first->prev = coro;	1868	if (coro_first) coro_first->prev = coro;
1424	coro->next = coro_first;	1869	coro->next = coro_first;
1425	coro_first = coro;	1870	coro_first = coro;
1426		1871
1427	coro->hv = hv = newHV ();	1872	coro->hv = hv = newHV ();
1428	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1873	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1874	mg->mg_flags |= MGf_DUP;
1429	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1875	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1430		1876
		1877	av_extend (coro->args, items - 1);
1431	for (i = 1; i < items; i++)	1878	for (i = 1; i < items; i++)
1432	av_push (coro->args, newSVsv (ST (i)));	1879	av_push (coro->args, newSVsv (ST (i)));
1433	}	1880	}
1434	OUTPUT:	1881	OUTPUT:
1435	RETVAL	1882	RETVAL
…		…
1446	Coro::cede_notself = 4	1893	Coro::cede_notself = 4
1447	CODE:	1894	CODE:
1448	{	1895	{
1449	struct transfer_args ta;	1896	struct transfer_args ta;
1450		1897
		1898	PUTBACK;
1451	switch (ix)	1899	switch (ix)
1452	{	1900	{
1453	case 0:	1901	case 0:
1454	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1902	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1455	ta.next = 0;	1903	ta.next = 0;
1456	break;	1904	break;
1457		1905
1458	case 1:	1906	case 1:
1459	if (items != 2)	1907	if (items != 2)
1460	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1908	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1461		1909
1462	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1910	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1463	break;	1911	break;
1464		1912
1465	case 2:	1913	case 2:
…		…
1474	if (!prepare_cede_notself (aTHX_ &ta))	1922	if (!prepare_cede_notself (aTHX_ &ta))
1475	XSRETURN_EMPTY;	1923	XSRETURN_EMPTY;
1476		1924
1477	break;	1925	break;
1478	}	1926	}
		1927	SPAGAIN;
1479		1928
1480	BARRIER;	1929	BARRIER;
		1930	PUTBACK;
1481	TRANSFER (ta);	1931	TRANSFER (ta, 0);
1482		1932	SPAGAIN; /* might be the sp of a different coroutine now */
1483	if (GIMME_V != G_VOID && ta.next != ta.prev)	1933	/* be extra careful not to ever do anything after TRANSFER */
1484	XSRETURN_YES;
1485	}	1934	}
1486		1935
1487	bool	1936	bool
1488	_destroy (SV *coro_sv)	1937	_destroy (SV *coro_sv)
1489	CODE:	1938	CODE:
1490	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1939	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1491	OUTPUT:	1940	OUTPUT:
1492	RETVAL	1941	RETVAL
1493		1942
1494	void	1943	void
1495	_exit (code)	1944	_exit (int code)
1496	int code
1497	PROTOTYPE: $	1945	PROTOTYPE: $
1498	CODE:	1946	CODE:
1499	_exit (code);	1947	_exit (code);
1500		1948
1501	int	1949	int
1502	cctx_stacksize (int new_stacksize = 0)	1950	cctx_stacksize (int new_stacksize = 0)
1503	CODE:	1951	CODE:
1504	RETVAL = coro_stacksize;	1952	RETVAL = cctx_stacksize;
1505	if (new_stacksize)	1953	if (new_stacksize)
		1954	{
1506	coro_stacksize = new_stacksize;	1955	cctx_stacksize = new_stacksize;
		1956	++cctx_gen;
		1957	}
		1958	OUTPUT:
		1959	RETVAL
		1960
		1961	int
		1962	cctx_max_idle (int max_idle = 0)
		1963	CODE:
		1964	RETVAL = cctx_max_idle;
		1965	if (max_idle > 1)
		1966	cctx_max_idle = max_idle;
1507	OUTPUT:	1967	OUTPUT:
1508	RETVAL	1968	RETVAL
1509		1969
1510	int	1970	int
1511	cctx_count ()	1971	cctx_count ()
…		…
1535	call (Coro::State coro, SV *coderef)	1995	call (Coro::State coro, SV *coderef)
1536	ALIAS:	1996	ALIAS:
1537	eval = 1	1997	eval = 1
1538	CODE:	1998	CODE:
1539	{	1999	{
1540	if (coro->mainstack)	2000	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1541	{	2001	{
1542	struct coro temp;	2002	struct coro temp;
1543	Zero (&temp, 1, struct coro);
1544		2003
1545	if (!(coro->flags & CF_RUNNING))	2004	if (!(coro->flags & CF_RUNNING))
1546	{	2005	{
		2006	PUTBACK;
1547	save_perl (aTHX_ &temp);	2007	save_perl (aTHX_ &temp);
1548	load_perl (aTHX_ coro);	2008	load_perl (aTHX_ coro);
1549	}	2009	}
1550		2010
1551	{	2011	{
1552	dSP;	2012	dSP;
1553	ENTER;	2013	ENTER;
1554	SAVETMPS;	2014	SAVETMPS;
		2015	PUTBACK;
		2016	PUSHSTACK;
1555	PUSHMARK (SP);	2017	PUSHMARK (SP);
1556	PUTBACK;	2018
1557	if (ix)	2019	if (ix)
1558	eval_sv (coderef, 0);	2020	eval_sv (coderef, 0);
1559	else	2021	else
1560	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	2022	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		2023
		2024	POPSTACK;
1561	SPAGAIN;	2025	SPAGAIN;
1562	FREETMPS;	2026	FREETMPS;
1563	LEAVE;	2027	LEAVE;
1564	PUTBACK;	2028	PUTBACK;
1565	}	2029	}
1566		2030
1567	if (!(coro->flags & CF_RUNNING))	2031	if (!(coro->flags & CF_RUNNING))
1568	{	2032	{
1569	save_perl (aTHX_ coro);	2033	save_perl (aTHX_ coro);
1570	load_perl (aTHX_ &temp);	2034	load_perl (aTHX_ &temp);
		2035	SPAGAIN;
1571	}	2036	}
1572	}	2037	}
1573	}	2038	}
1574		2039
1575	SV *	2040	SV *
…		…
1587		2052
1588	void	2053	void
1589	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2054	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1590		2055
1591	SV *	2056	SV *
1592	has_stack (Coro::State coro)	2057	has_cctx (Coro::State coro)
1593	PROTOTYPE: $	2058	PROTOTYPE: $
1594	CODE:	2059	CODE:
1595	RETVAL = boolSV (!!coro->cctx);	2060	RETVAL = boolSV (!!coro->cctx);
1596	OUTPUT:	2061	OUTPUT:
1597	RETVAL	2062	RETVAL
…		…
1602	CODE:	2067	CODE:
1603	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2068	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1604	OUTPUT:	2069	OUTPUT:
1605	RETVAL	2070	RETVAL
1606		2071
1607	IV	2072	UV
1608	rss (Coro::State coro)	2073	rss (Coro::State coro)
1609	PROTOTYPE: $	2074	PROTOTYPE: $
1610	ALIAS:	2075	ALIAS:
1611	usecount = 1	2076	usecount = 1
1612	CODE:	2077	CODE:
…		…
1616	case 1: RETVAL = coro->usecount; break;	2081	case 1: RETVAL = coro->usecount; break;
1617	}	2082	}
1618	OUTPUT:	2083	OUTPUT:
1619	RETVAL	2084	RETVAL
1620		2085
		2086	void
		2087	force_cctx ()
		2088	CODE:
		2089	struct coro *coro = SvSTATE (coro_current);
		2090	coro->cctx->idle_sp = 0;
		2091
		2092	void
		2093	swap_defsv (Coro::State self)
		2094	PROTOTYPE: $
		2095	ALIAS:
		2096	swap_defav = 1
		2097	CODE:
		2098	if (!self->slot)
		2099	croak ("cannot swap state with coroutine that has no saved state");
		2100	else
		2101	{
		2102	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2103	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2104
		2105	SV *tmp = *src; *src = *dst; *dst = tmp;
		2106	}
1621		2107
1622	MODULE = Coro::State PACKAGE = Coro	2108	MODULE = Coro::State PACKAGE = Coro
1623		2109
1624	BOOT:	2110	BOOT:
1625	{	2111	{
1626	int i;	2112	int i;
1627		2113
1628	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1629	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1630	av_async_pool = get_av ("Coro::async_pool", TRUE);	2114	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2115	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2116	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1631		2117
1632	coro_current = get_sv ("Coro::current", FALSE);	2118	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1633	SvREADONLY_on (coro_current);	2119	SvREADONLY_on (coro_current);
1634		2120
1635	coro_stash = gv_stashpv ("Coro", TRUE);	2121	coro_stash = gv_stashpv ("Coro", TRUE);
1636		2122
1637	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2123	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1638	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2124	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1639	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2125	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1640	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2126	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1643		2129
1644	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2130	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1645	coro_ready[i] = newAV ();	2131	coro_ready[i] = newAV ();
1646		2132
1647	{	2133	{
1648	SV *sv = perl_get_sv("Coro::API", 1);	2134	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2135	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1649		2136
1650	coroapi.schedule = api_schedule;	2137	coroapi.schedule = api_schedule;
1651	coroapi.cede = api_cede;	2138	coroapi.cede = api_cede;
1652	coroapi.cede_notself = api_cede_notself;	2139	coroapi.cede_notself = api_cede_notself;
1653	coroapi.ready = api_ready;	2140	coroapi.ready = api_ready;
…		…
1664	void	2151	void
1665	_set_current (SV *current)	2152	_set_current (SV *current)
1666	PROTOTYPE: $	2153	PROTOTYPE: $
1667	CODE:	2154	CODE:
1668	SvREFCNT_dec (SvRV (coro_current));	2155	SvREFCNT_dec (SvRV (coro_current));
1669	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2156	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2157
		2158	void
		2159	_set_readyhook (SV *hook)
		2160	PROTOTYPE: $
		2161	CODE:
		2162	LOCK;
		2163	SvREFCNT_dec (coro_readyhook);
		2164	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2165	UNLOCK;
1670		2166
1671	int	2167	int
1672	prio (Coro::State coro, int newprio = 0)	2168	prio (Coro::State coro, int newprio = 0)
1673	ALIAS:	2169	ALIAS:
1674	nice = 1	2170	nice = 1
…		…
1704	CODE:	2200	CODE:
1705	RETVAL = coro_nready;	2201	RETVAL = coro_nready;
1706	OUTPUT:	2202	OUTPUT:
1707	RETVAL	2203	RETVAL
1708		2204
		2205	void
		2206	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2207	PROTOTYPE: $;$
		2208	CODE:
		2209	SvREFCNT_dec (self->throw);
		2210	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2211
1709	# for async_pool speedup	2212	# for async_pool speedup
1710	void	2213	void
1711	_pool_1 (SV *cb)	2214	_pool_1 (SV *cb)
1712	CODE:	2215	CODE:
1713	{	2216	{
…		…
1717	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2220	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1718	AV *invoke_av;	2221	AV *invoke_av;
1719	int i, len;	2222	int i, len;
1720		2223
1721	if (!invoke)	2224	if (!invoke)
		2225	{
		2226	SV *old = PL_diehook;
		2227	PL_diehook = 0;
		2228	SvREFCNT_dec (old);
1722	croak ("\3terminate\2\n");	2229	croak ("\3async_pool terminate\2\n");
		2230	}
1723		2231
1724	SvREFCNT_dec (coro->saved_deffh);	2232	SvREFCNT_dec (coro->saved_deffh);
1725	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2233	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1726		2234
1727	hv_store (hv, "desc", sizeof ("desc") - 1,	2235	hv_store (hv, "desc", sizeof ("desc") - 1,
1728	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2236	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1729		2237
1730	invoke_av = (AV *)SvRV (invoke);	2238	invoke_av = (AV *)SvRV (invoke);
…		…
1734		2242
1735	if (len > 0)	2243	if (len > 0)
1736	{	2244	{
1737	av_fill (defav, len - 1);	2245	av_fill (defav, len - 1);
1738	for (i = 0; i < len; ++i)	2246	for (i = 0; i < len; ++i)
1739	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2247	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1740	}	2248	}
1741		2249
1742	SvREFCNT_dec (invoke);	2250	SvREFCNT_dec (invoke);
1743	}	2251	}
1744		2252
…		…
1751	sv_setsv (cb, &PL_sv_undef);	2259	sv_setsv (cb, &PL_sv_undef);
1752		2260
1753	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2261	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1754	coro->saved_deffh = 0;	2262	coro->saved_deffh = 0;
1755		2263
1756	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2264	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1757	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2265	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2266	{
		2267	SV *old = PL_diehook;
		2268	PL_diehook = 0;
		2269	SvREFCNT_dec (old);
1758	croak ("\3terminate\2\n");	2270	croak ("\3async_pool terminate\2\n");
		2271	}
1759		2272
1760	av_clear (GvAV (PL_defgv));	2273	av_clear (GvAV (PL_defgv));
1761	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2274	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1762	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2275	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1763		2276
…		…
1767	api_trace (coro_current, 0);	2280	api_trace (coro_current, 0);
1768		2281
1769	av_push (av_async_pool, newSVsv (coro_current));	2282	av_push (av_async_pool, newSVsv (coro_current));
1770	}	2283	}
1771		2284
		2285	#if 0
		2286
		2287	void
		2288	_generator_call (...)
		2289	PROTOTYPE: @
		2290	PPCODE:
		2291	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2292	xxxx
		2293	abort ();
		2294
		2295	SV *
		2296	gensub (SV *sub, ...)
		2297	PROTOTYPE: &;@
		2298	CODE:
		2299	{
		2300	struct coro *coro;
		2301	MAGIC *mg;
		2302	CV *xcv;
		2303	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2304	int i;
		2305
		2306	CvGV (ncv) = CvGV (cv);
		2307	CvFILE (ncv) = CvFILE (cv);
		2308
		2309	Newz (0, coro, 1, struct coro);
		2310	coro->args = newAV ();
		2311	coro->flags = CF_NEW;
		2312
		2313	av_extend (coro->args, items - 1);
		2314	for (i = 1; i < items; i++)
		2315	av_push (coro->args, newSVsv (ST (i)));
		2316
		2317	CvISXSUB_on (ncv);
		2318	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2319
		2320	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2321
		2322	CvXSUB (ncv) = CvXSUB (xcv);
		2323	CvANON_on (ncv);
		2324
		2325	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2326	RETVAL = newRV_noinc ((SV *)ncv);
		2327	}
		2328	OUTPUT:
		2329	RETVAL
		2330
		2331	#endif
		2332
1772		2333
1773	MODULE = Coro::State PACKAGE = Coro::AIO	2334	MODULE = Coro::State PACKAGE = Coro::AIO
1774		2335
1775	SV *	2336	void
1776	_get_state ()	2337	_get_state (SV *self)
1777	CODE:	2338	PPCODE:
1778	{	2339	{
1779	struct io_state *data;	2340	AV *defav = GvAV (PL_defgv);
1780		2341	AV *av = newAV ();
		2342	int i;
1781	RETVAL = newSV (sizeof (struct io_state));	2343	SV *data_sv = newSV (sizeof (struct io_state));
1782	data = (struct io_state *)SvPVX (RETVAL);	2344	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1783	SvCUR_set (RETVAL, sizeof (struct io_state));	2345	SvCUR_set (data_sv, sizeof (struct io_state));
1784	SvPOK_only (RETVAL);	2346	SvPOK_only (data_sv);
1785		2347
1786	data->errorno = errno;	2348	data->errorno = errno;
1787	data->laststype = PL_laststype;	2349	data->laststype = PL_laststype;
1788	data->laststatval = PL_laststatval;	2350	data->laststatval = PL_laststatval;
1789	data->statcache = PL_statcache;	2351	data->statcache = PL_statcache;
		2352
		2353	av_extend (av, AvFILLp (defav) + 1 + 1);
		2354
		2355	for (i = 0; i <= AvFILLp (defav); ++i)
		2356	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2357
		2358	av_push (av, data_sv);
		2359
		2360	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2361
		2362	api_ready (self);
1790	}	2363	}
1791	OUTPUT:
1792	RETVAL
1793		2364
1794	void	2365	void
1795	_set_state (char *data_)	2366	_set_state (SV *state)
1796	PROTOTYPE: $	2367	PROTOTYPE: $
1797	CODE:	2368	PPCODE:
1798	{	2369	{
1799	struct io_state *data = (void *)data_;	2370	AV *av = (AV *)SvRV (state);
		2371	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2372	int i;
1800		2373
1801	errno = data->errorno;	2374	errno = data->errorno;
1802	PL_laststype = data->laststype;	2375	PL_laststype = data->laststype;
1803	PL_laststatval = data->laststatval;	2376	PL_laststatval = data->laststatval;
1804	PL_statcache = data->statcache;	2377	PL_statcache = data->statcache;
1805	}
1806		2378
		2379	EXTEND (SP, AvFILLp (av));
		2380	for (i = 0; i < AvFILLp (av); ++i)
		2381	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2382	}
		2383
		2384
		2385	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2386
		2387	BOOT:
		2388	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2389
		2390	SV *
		2391	_schedule (...)
		2392	PROTOTYPE: @
		2393	CODE:
		2394	{
		2395	static int incede;
		2396
		2397	api_cede_notself ();
		2398
		2399	++incede;
		2400	while (coro_nready >= incede && api_cede ())
		2401	;
		2402
		2403	sv_setsv (sv_activity, &PL_sv_undef);
		2404	if (coro_nready >= incede)
		2405	{
		2406	PUSHMARK (SP);
		2407	PUTBACK;
		2408	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2409	SPAGAIN;
		2410	}
		2411
		2412	--incede;
		2413	}
		2414
		2415
		2416	MODULE = Coro::State PACKAGE = PerlIO::cede
		2417
		2418	BOOT:
		2419	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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