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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.214 by root, Sat Oct 13 23:19:10 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
2		5
3	#include "EXTERN.h"	6	#include "EXTERN.h"
4	#include "perl.h"	7	#include "perl.h"
5	#include "XSUB.h"	8	#include "XSUB.h"
6		9
7	#include "patchlevel.h"	10	#include "patchlevel.h"
8		11
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	|| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	/* 5.8.7 */
44	#ifndef SvRV_set
45	# define SvRV_set(s,v) SvRV(s) = (v)
46	#endif
47
48	#include <stdio.h>	12	#include <stdio.h>
49	#include <errno.h>	13	#include <errno.h>
50	#include <assert.h>	14	#include <assert.h>
51		15	#include <inttypes.h> /* portable stdint.h */
52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
53	# undef STACKGUARD
54	#endif
55
56	#ifndef STACKGUARD
57	# define STACKGUARD 0
58	#endif
59		16
60	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
61	# include <unistd.h>	18	# include <unistd.h>
62	# include <sys/mman.h>	19	# include <sys/mman.h>
63	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
…		…
78	#else	35	#else
79	# define PAGESIZE 0	36	# define PAGESIZE 0
80	# define BOOT_PAGESIZE (void)0	37	# define BOOT_PAGESIZE (void)0
81	#endif	38	#endif
82		39
83	/* The next macro should declare a variable stacklevel that contains and approximation	40	#if CORO_USE_VALGRIND
84	* to the current C stack pointer. Its property is that it changes with each call	41	# include <valgrind/valgrind.h>
85	* and should be unique. */	42	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		43	#else
		44	# define REGISTER_STACK(cctx,start,end)
		45	#endif
		46
		47	/* the maximum number of idle cctx that will be pooled */
		48	#define MAX_IDLE_CCTX 8
		49
		50	#define PERL_VERSION_ATLEAST(a,b,c) \
		51	(PERL_REVISION > (a) \
		52	|| (PERL_REVISION == (a) \
		53	&& (PERL_VERSION > (b) \
		54	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		55
		56	#if !PERL_VERSION_ATLEAST (5,6,0)
		57	# ifndef PL_ppaddr
		58	# define PL_ppaddr ppaddr
		59	# endif
		60	# ifndef call_sv
		61	# define call_sv perl_call_sv
		62	# endif
		63	# ifndef get_sv
		64	# define get_sv perl_get_sv
		65	# endif
		66	# ifndef get_cv
		67	# define get_cv perl_get_cv
		68	# endif
		69	# ifndef IS_PADGV
		70	# define IS_PADGV(v) 0
		71	# endif
		72	# ifndef IS_PADCONST
		73	# define IS_PADCONST(v) 0
		74	# endif
		75	#endif
		76
		77	/* 5.8.7 */
		78	#ifndef SvRV_set
		79	# define SvRV_set(s,v) SvRV(s) = (v)
		80	#endif
		81
		82	/* 5.8.8 */
		83	#ifndef GV_NOTQUAL
		84	# define GV_NOTQUAL 0
		85	#endif
		86	#ifndef newSV
		87	# define newSV(l) NEWSV(0,l)
		88	#endif
		89
		90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		91	# undef CORO_STACKGUARD
		92	#endif
		93
		94	#ifndef CORO_STACKGUARD
		95	# define CORO_STACKGUARD 0
		96	#endif
		97
		98	/* prefer perl internal functions over our own? */
		99	#ifndef CORO_PREFER_PERL_FUNCTIONS
		100	# define CORO_PREFER_PERL_FUNCTIONS 0
		101	#endif
		102
		103	/* The next macros try to return the current stack pointer, in an as
		104	* portable way as possible. */
86	#define dSTACKLEVEL int stacklevel	105	#define dSTACKLEVEL volatile char stacklevel
87	#define STACKLEVEL ((void *)&stacklevel)	106	#define STACKLEVEL ((void *)&stacklevel)
88		107
89	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
90		109
91	#if __GNUC__ >= 3	110	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)	111	# define attribute(x) __attribute__(x)
		112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		113	# define expect(expr,value) __builtin_expect ((expr),(value))
93	#else	114	#else
94	# define attribute(x)	115	# define attribute(x)
		116	# define BARRIER
		117	# define expect(expr,value) (expr)
95	#endif	118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
96		122
97	#define NOINLINE attribute ((noinline))	123	#define NOINLINE attribute ((noinline))
98		124
99	#include "CoroAPI.h"	125	#include "CoroAPI.h"
100		126
…		…
105	#else	131	#else
106	# define LOCK (void)0	132	# define LOCK (void)0
107	# define UNLOCK (void)0	133	# define UNLOCK (void)0
108	#endif	134	#endif
109		135
		136	/* helper storage struct for Coro::AIO */
110	struct io_state	137	struct io_state
111	{	138	{
112	int errorno;	139	int errorno;
113	I32 laststype;	140	I32 laststype;
114	int laststatval;	141	int laststatval;
115	Stat_t statcache;	142	Stat_t statcache;
116	};	143	};
117		144
		145	static size_t coro_stacksize = CORO_STACKSIZE;
118	static struct CoroAPI coroapi;	146	static struct CoroAPI coroapi;
119	static AV *main_mainstack; /* used to differentiate between $main and others */	147	static AV *main_mainstack; /* used to differentiate between $main and others */
		148	static JMPENV *main_top_env;
120	static HV *coro_state_stash, *coro_stash;	149	static HV *coro_state_stash, *coro_stash;
121	static SV *coro_mortal; /* will be freed after next transfer */	150	static SV *coro_mortal; /* will be freed after next transfer */
122		151
		152	static GV *irsgv; /* $/ */
		153	static GV *stdoutgv; /* *STDOUT */
		154	static SV *rv_diehook;
		155	static SV *rv_warnhook;
		156	static HV *hv_sig; /* %SIG */
		157
		158	/* async_pool helper stuff */
		159	static SV *sv_pool_rss;
		160	static SV *sv_pool_size;
		161	static AV *av_async_pool;
		162
123	static struct coro_cctx *cctx_first;	163	static struct coro_cctx *cctx_first;
124	static int cctx_count, cctx_idle;	164	static int cctx_count, cctx_idle;
		165
		166	enum {
		167	CC_MAPPED = 0x01,
		168	CC_NOREUSE = 0x02, /* throw this away after tracing */
		169	CC_TRACE = 0x04,
		170	CC_TRACE_SUB = 0x08, /* trace sub calls */
		171	CC_TRACE_LINE = 0x10, /* trace each statement */
		172	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		173	};
125		174
126	/* this is a structure representing a c-level coroutine */	175	/* this is a structure representing a c-level coroutine */
127	typedef struct coro_cctx {	176	typedef struct coro_cctx {
128	struct coro_cctx *next;	177	struct coro_cctx *next;
129		178
130	/* the stack */	179	/* the stack */
131	void *sptr;	180	void *sptr;
132	long ssize; /* positive == mmap, otherwise malloc */	181	size_t ssize;
133		182
134	/* cpu state */	183	/* cpu state */
135	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	184	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		185	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
136	JMPENV *top_env;	186	JMPENV *top_env;
137	coro_context cctx;	187	coro_context cctx;
138		188
139	int inuse;
140
141	#if USE_VALGRIND	189	#if CORO_USE_VALGRIND
142	int valgrind_id;	190	int valgrind_id;
143	#endif	191	#endif
		192	unsigned char flags;
144	} coro_cctx;	193	} coro_cctx;
145		194
146	enum {	195	enum {
147	CF_RUNNING = 0x0001, /* coroutine is running */	196	CF_RUNNING = 0x0001, /* coroutine is running */
148	CF_READY = 0x0002, /* coroutine is ready */	197	CF_READY = 0x0002, /* coroutine is ready */
149	CF_NEW = 0x0004, /* ahs never been switched to */	198	CF_NEW = 0x0004, /* has never been switched to */
		199	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
150	};	200	};
		201
		202	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		203	typedef struct {
		204	SV *defsv;
		205	AV *defav;
		206	SV *errsv;
		207	SV *irsgv;
		208	#define VAR(name,type) type name;
		209	# include "state.h"
		210	#undef VAR
		211	} perl_slots;
		212
		213	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
151		214
152	/* this is a structure representing a perl-level coroutine */	215	/* this is a structure representing a perl-level coroutine */
153	struct coro {	216	struct coro {
154	/* the c coroutine allocated to this perl coroutine, if any */	217	/* the c coroutine allocated to this perl coroutine, if any */
155	coro_cctx *cctx;	218	coro_cctx *cctx;
156		219
		220	/* process data */
		221	AV *mainstack;
		222	perl_slots *slot; /* basically the saved sp */
		223
157	/* data associated with this coroutine (initial args) */	224	AV *args; /* data associated with this coroutine (initial args) */
158	AV *args;	225	int refcnt; /* coroutines are refcounted, yes */
159	int refcnt;
160	int save; /* CORO_SAVE flags */
161	int flags; /* CF_ flags */	226	int flags; /* CF_ flags */
		227	HV *hv; /* the perl hash associated with this coro, if any */
162		228
163	/* optionally saved, might be zero */	229	/* statistics */
164	AV *defav; /* @_ */	230	int usecount; /* number of transfers to this coro */
165	SV *defsv; /* $_ */
166	SV *errsv; /* $@ */
167	SV *irssv; /* $/ */
168	SV *irssv_sv; /* real $/ cache */
169
170	#define VAR(name,type) type name;
171	# include "state.h"
172	#undef VAR
173		231
174	/* coro process data */	232	/* coro process data */
175	int prio;	233	int prio;
		234	SV *throw; /* exception to be thrown */
		235
		236	/* async_pool */
		237	SV *saved_deffh;
		238
		239	/* linked list */
		240	struct coro *next, *prev;
176	};	241	};
177		242
178	typedef struct coro *Coro__State;	243	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	244	typedef struct coro *Coro__State_or_hashref;
180		245
		246	/** Coro ********************************************************************/
		247
		248	#define PRIO_MAX 3
		249	#define PRIO_HIGH 1
		250	#define PRIO_NORMAL 0
		251	#define PRIO_LOW -1
		252	#define PRIO_IDLE -3
		253	#define PRIO_MIN -4
		254
		255	/* for Coro.pm */
		256	static SV *coro_current;
		257	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		258	static int coro_nready;
		259	static struct coro *coro_first;
		260
		261	/** lowlevel stuff **********************************************************/
		262
		263	static SV *
		264	coro_get_sv (pTHX_ const char *name, int create)
		265	{
		266	#if PERL_VERSION_ATLEAST (5,9,0)
		267	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		268	get_sv (name, create);
		269	#endif
		270	return get_sv (name, create);
		271	}
		272
181	static AV *	273	static AV *
		274	coro_get_av (pTHX_ const char *name, int create)
		275	{
		276	#if PERL_VERSION_ATLEAST (5,9,0)
		277	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		278	get_av (name, create);
		279	#endif
		280	return get_av (name, create);
		281	}
		282
		283	static HV *
		284	coro_get_hv (pTHX_ const char *name, int create)
		285	{
		286	#if PERL_VERSION_ATLEAST (5,9,0)
		287	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		288	get_hv (name, create);
		289	#endif
		290	return get_hv (name, create);
		291	}
		292
		293	static AV *
182	coro_clone_padlist (CV *cv)	294	coro_clone_padlist (pTHX_ CV *cv)
183	{	295	{
184	AV *padlist = CvPADLIST (cv);	296	AV *padlist = CvPADLIST (cv);
185	AV *newpadlist, *newpad;	297	AV *newpadlist, *newpad;
186		298
187	newpadlist = newAV ();	299	newpadlist = newAV ();
…		…
199		311
200	return newpadlist;	312	return newpadlist;
201	}	313	}
202		314
203	static void	315	static void
204	free_padlist (AV *padlist)	316	free_padlist (pTHX_ AV *padlist)
205	{	317	{
206	/* may be during global destruction */	318	/* may be during global destruction */
207	if (SvREFCNT (padlist))	319	if (SvREFCNT (padlist))
208	{	320	{
209	I32 i = AvFILLp (padlist);	321	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	342	AV *padlist;
231	AV *av = (AV *)mg->mg_obj;	343	AV *av = (AV *)mg->mg_obj;
232		344
233	/* casting is fun. */	345	/* casting is fun. */
234	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	346	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
235	free_padlist (padlist);	347	free_padlist (aTHX_ padlist);
236
237	SvREFCNT_dec (av);
238		348
239	return 0;	349	return 0;
240	}	350	}
241		351
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	352	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		353	#define CORO_MAGIC_type_state PERL_MAGIC_ext
243		354
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	355	static MGVTBL coro_cv_vtbl = {
		356	0, 0, 0, 0,
		357	coro_cv_free
		358	};
245		359
246	#define CORO_MAGIC(cv) \	360	#define CORO_MAGIC(sv,type) \
247	SvMAGIC (cv) \	361	SvMAGIC (sv) \
248	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (sv)->mg_type == type \
249	? SvMAGIC (cv) \	363	? SvMAGIC (sv) \
250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find (sv, type) \
251	: 0	365	: 0
252		366
		367	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		368	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		369
		370	static struct coro *
		371	SvSTATE_ (pTHX_ SV *coro)
		372	{
		373	HV *stash;
		374	MAGIC *mg;
		375
		376	if (SvROK (coro))
		377	coro = SvRV (coro);
		378
		379	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		380	croak ("Coro::State object required");
		381
		382	stash = SvSTASH (coro);
		383	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		384	{
		385	/* very slow, but rare, check */
		386	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		387	croak ("Coro::State object required");
		388	}
		389
		390	mg = CORO_MAGIC_state (coro);
		391	return (struct coro *)mg->mg_ptr;
		392	}
		393
		394	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		395
253	/* the next two functions merely cache the padlists */	396	/* the next two functions merely cache the padlists */
254	static void	397	static void
255	get_padlist (CV *cv)	398	get_padlist (pTHX_ CV *cv)
256	{	399	{
257	MAGIC *mg = CORO_MAGIC (cv);	400	MAGIC *mg = CORO_MAGIC_cv (cv);
258	AV *av;	401	AV *av;
259		402
260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	403	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	404	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262	else	405	else
263	{	406	{
264	#if 0	407	#if CORO_PREFER_PERL_FUNCTIONS
265	/* this is probably cleaner, but also slower? */	408	/* this is probably cleaner, but also slower? */
266	CV *cp = Perl_cv_clone (cv);	409	CV *cp = Perl_cv_clone (cv);
267	CvPADLIST (cv) = CvPADLIST (cp);	410	CvPADLIST (cv) = CvPADLIST (cp);
268	CvPADLIST (cp) = 0;	411	CvPADLIST (cp) = 0;
269	SvREFCNT_dec (cp);	412	SvREFCNT_dec (cp);
270	#else	413	#else
271	CvPADLIST (cv) = coro_clone_padlist (cv);	414	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272	#endif	415	#endif
273	}	416	}
274	}	417	}
275		418
276	static void	419	static void
277	put_padlist (CV *cv)	420	put_padlist (pTHX_ CV *cv)
278	{	421	{
279	MAGIC *mg = CORO_MAGIC (cv);	422	MAGIC *mg = CORO_MAGIC_cv (cv);
280	AV *av;	423	AV *av;
281		424
282	if (!mg)	425	if (expect_false (!mg))
283	{	426	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
284	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
285	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
286	mg->mg_virtual = &vtbl_coro;
287	mg->mg_obj = (SV *)newAV ();
288	}
289		427
290	av = (AV *)mg->mg_obj;	428	av = (AV *)mg->mg_obj;
291		429
292	if (AvFILLp (av) >= AvMAX (av))	430	if (expect_false (AvFILLp (av) >= AvMAX (av)))
293	av_extend (av, AvMAX (av) + 1);	431	av_extend (av, AvMAX (av) + 1);
294		432
295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	433	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296	}	434	}
297		435
298	#define SB do {	436	/** load & save, init *******************************************************/
299	#define SE } while (0)
300		437
301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
302
303	static void	438	static void
304	load_perl (Coro__State c)	439	load_perl (pTHX_ Coro__State c)
305	{	440	{
		441	perl_slots *slot = c->slot;
		442	c->slot = 0;
		443
		444	PL_mainstack = c->mainstack;
		445
		446	GvSV (PL_defgv) = slot->defsv;
		447	GvAV (PL_defgv) = slot->defav;
		448	GvSV (PL_errgv) = slot->errsv;
		449	GvSV (irsgv) = slot->irsgv;
		450
306	#define VAR(name,type) PL_ ## name = c->name;	451	#define VAR(name,type) PL_ ## name = slot->name;
307	# include "state.h"	452	# include "state.h"
308	#undef VAR	453	#undef VAR
309
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
313	if (c->irssv)
314	{
315	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
316	SvREFCNT_dec (c->irssv);
317	else
318	{
319	REPLACE_SV (PL_rs, c->irssv);
320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321	sv_setsv (c->irssv_sv, PL_rs);
322	}
323	}
324		454
325	{	455	{
326	dSP;	456	dSP;
		457
327	CV *cv;	458	CV *cv;
328		459
329	/* now do the ugly restore mess */	460	/* now do the ugly restore mess */
330	while ((cv = (CV *)POPs))	461	while (expect_true (cv = (CV *)POPs))
331	{	462	{
332	put_padlist (cv); /* mark this padlist as available */	463	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvDEPTH (cv) = PTR2IV (POPs);	464	CvDEPTH (cv) = PTR2IV (POPs);
334	CvPADLIST (cv) = (AV *)POPs;	465	CvPADLIST (cv) = (AV *)POPs;
335	}	466	}
336		467
337	PUTBACK;	468	PUTBACK;
338	}	469	}
339	}	470	}
340		471
341	static void	472	static void
342	save_perl (Coro__State c)	473	save_perl (pTHX_ Coro__State c)
343	{	474	{
344	{	475	{
345	dSP;	476	dSP;
346	I32 cxix = cxstack_ix;	477	I32 cxix = cxstack_ix;
347	PERL_CONTEXT *ccstk = cxstack;	478	PERL_CONTEXT *ccstk = cxstack;
…		…
350	/*	481	/*
351	* the worst thing you can imagine happens first - we have to save	482	* the worst thing you can imagine happens first - we have to save
352	* (and reinitialize) all cv's in the whole callchain :(	483	* (and reinitialize) all cv's in the whole callchain :(
353	*/	484	*/
354		485
355	EXTEND (SP, 3 + 1);
356	PUSHs (Nullsv);	486	XPUSHs (Nullsv);
357	/* this loop was inspired by pp_caller */	487	/* this loop was inspired by pp_caller */
358	for (;;)	488	for (;;)
359	{	489	{
360	while (cxix >= 0)	490	while (expect_true (cxix >= 0))
361	{	491	{
362	PERL_CONTEXT *cx = &ccstk[cxix--];	492	PERL_CONTEXT *cx = &ccstk[cxix--];
363		493
364	if (CxTYPE (cx) == CXt_SUB)	494	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
365	{	495	{
366	CV *cv = cx->blk_sub.cv;	496	CV *cv = cx->blk_sub.cv;
367		497
368	if (CvDEPTH (cv))	498	if (expect_true (CvDEPTH (cv)))
369	{	499	{
370	EXTEND (SP, 3);	500	EXTEND (SP, 3);
371	PUSHs ((SV *)CvPADLIST (cv));	501	PUSHs ((SV *)CvPADLIST (cv));
372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	502	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	503	PUSHs ((SV *)cv);
374		504
375	CvDEPTH (cv) = 0;	505	CvDEPTH (cv) = 0;
376	get_padlist (cv);	506	get_padlist (aTHX_ cv);
377	}	507	}
378	}	508	}
379	}	509	}
380		510
381	if (top_si->si_type == PERLSI_MAIN)	511	if (expect_true (top_si->si_type == PERLSI_MAIN))
382	break;	512	break;
383		513
384	top_si = top_si->si_prev;	514	top_si = top_si->si_prev;
385	ccstk = top_si->si_cxstack;	515	ccstk = top_si->si_cxstack;
386	cxix = top_si->si_cxix;	516	cxix = top_si->si_cxix;
387	}	517	}
388		518
389	PUTBACK;	519	PUTBACK;
390	}	520	}
391		521
392	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	522	/* allocate some space on the context stack for our purposes */
393	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	523	/* we manually unroll here, as usually 2 slots is enough */
394	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	524	if (SLOT_COUNT >= 1) CXINC;
395	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	525	if (SLOT_COUNT >= 2) CXINC;
		526	if (SLOT_COUNT >= 3) CXINC;
		527	{
		528	int i;
		529	for (i = 3; i < SLOT_COUNT; ++i)
		530	CXINC;
		531	}
		532	cxstack_ix -= SLOT_COUNT; /* undo allocation */
396		533
		534	c->mainstack = PL_mainstack;
		535
		536	{
		537	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		538
		539	slot->defav = GvAV (PL_defgv);
		540	slot->defsv = DEFSV;
		541	slot->errsv = ERRSV;
		542	slot->irsgv = GvSV (irsgv);
		543
397	#define VAR(name,type)c->name = PL_ ## name;	544	#define VAR(name,type) slot->name = PL_ ## name;
398	# include "state.h"	545	# include "state.h"
399	#undef VAR	546	#undef VAR
		547	}
400	}	548	}
401		549
402	/*	550	/*
403	* allocate various perl stacks. This is an exact copy	551	* allocate various perl stacks. This is an exact copy
404	* of perl.c:init_stacks, except that it uses less memory	552	* of perl.c:init_stacks, except that it uses less memory
405	* on the (sometimes correct) assumption that coroutines do	553	* on the (sometimes correct) assumption that coroutines do
406	* not usually need a lot of stackspace.	554	* not usually need a lot of stackspace.
407	*/	555	*/
408	#if USE_PERL_INIT_STACKS	556	#if CORO_PREFER_PERL_FUNCTIONS
409	# define coro_init_stacks init_stacks	557	# define coro_init_stacks init_stacks
410	#else	558	#else
411
412	static void	559	static void
413	coro_init_stacks ()	560	coro_init_stacks (pTHX)
414	{	561	{
415	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	562	PL_curstackinfo = new_stackinfo(32, 8);
416	PL_curstackinfo->si_type = PERLSI_MAIN;	563	PL_curstackinfo->si_type = PERLSI_MAIN;
417	PL_curstack = PL_curstackinfo->si_stack;	564	PL_curstack = PL_curstackinfo->si_stack;
418	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	565	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
419		566
420	PL_stack_base = AvARRAY(PL_curstack);	567	PL_stack_base = AvARRAY(PL_curstack);
421	PL_stack_sp = PL_stack_base;	568	PL_stack_sp = PL_stack_base;
422	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	569	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
423		570
424	New(50,PL_tmps_stack,128,SV*);	571	New(50,PL_tmps_stack,32,SV*);
425	PL_tmps_floor = -1;	572	PL_tmps_floor = -1;
426	PL_tmps_ix = -1;	573	PL_tmps_ix = -1;
427	PL_tmps_max = 128;	574	PL_tmps_max = 32;
428		575
429	New(54,PL_markstack,32,I32);	576	New(54,PL_markstack,16,I32);
430	PL_markstack_ptr = PL_markstack;	577	PL_markstack_ptr = PL_markstack;
431	PL_markstack_max = PL_markstack + 32;	578	PL_markstack_max = PL_markstack + 16;
432		579
433	#ifdef SET_MARK_OFFSET	580	#ifdef SET_MARK_OFFSET
434	SET_MARK_OFFSET;	581	SET_MARK_OFFSET;
435	#endif	582	#endif
436		583
437	New(54,PL_scopestack,32,I32);	584	New(54,PL_scopestack,8,I32);
438	PL_scopestack_ix = 0;	585	PL_scopestack_ix = 0;
439	PL_scopestack_max = 32;	586	PL_scopestack_max = 8;
440		587
441	New(54,PL_savestack,64,ANY);	588	New(54,PL_savestack,24,ANY);
442	PL_savestack_ix = 0;	589	PL_savestack_ix = 0;
443	PL_savestack_max = 64;	590	PL_savestack_max = 24;
444		591
445	#if !PERL_VERSION_ATLEAST (5,9,0)	592	#if !PERL_VERSION_ATLEAST (5,9,0)
446	New(54,PL_retstack,16,OP*);	593	New(54,PL_retstack,4,OP*);
447	PL_retstack_ix = 0;	594	PL_retstack_ix = 0;
448	PL_retstack_max = 16;	595	PL_retstack_max = 4;
449	#endif	596	#endif
450	}	597	}
		598	#endif
451		599
452	/*	600	/*
453	* destroy the stacks, the callchain etc...	601	* destroy the stacks, the callchain etc...
454	*/	602	*/
455	static void	603	static void
456	coro_destroy_stacks ()	604	coro_destroy_stacks (pTHX)
457	{	605	{
458	if (!IN_DESTRUCT)
459	{
460	/* restore all saved variables and stuff */
461	LEAVE_SCOPE (0);
462	assert (PL_tmps_floor == -1);
463
464	/* free all temporaries */
465	FREETMPS;
466	assert (PL_tmps_ix == -1);
467
468	POPSTACK_TO (PL_mainstack);
469	}
470
471	while (PL_curstackinfo->si_next)	606	while (PL_curstackinfo->si_next)
472	PL_curstackinfo = PL_curstackinfo->si_next;	607	PL_curstackinfo = PL_curstackinfo->si_next;
473		608
474	while (PL_curstackinfo)	609	while (PL_curstackinfo)
475	{	610	{
…		…
489	Safefree (PL_savestack);	624	Safefree (PL_savestack);
490	#if !PERL_VERSION_ATLEAST (5,9,0)	625	#if !PERL_VERSION_ATLEAST (5,9,0)
491	Safefree (PL_retstack);	626	Safefree (PL_retstack);
492	#endif	627	#endif
493	}	628	}
494	#endif
495		629
		630	static size_t
		631	coro_rss (pTHX_ struct coro *coro)
		632	{
		633	size_t rss = sizeof (*coro);
		634
		635	if (coro->mainstack)
		636	{
		637	perl_slots tmp_slot;
		638	perl_slots *slot;
		639
		640	if (coro->flags & CF_RUNNING)
		641	{
		642	slot = &tmp_slot;
		643
		644	#define VAR(name,type) slot->name = PL_ ## name;
		645	# include "state.h"
		646	#undef VAR
		647	}
		648	else
		649	slot = coro->slot;
		650
		651	rss += sizeof (slot->curstackinfo);
		652	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		653	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		654	rss += slot->tmps_max * sizeof (SV *);
		655	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		656	rss += slot->scopestack_max * sizeof (I32);
		657	rss += slot->savestack_max * sizeof (ANY);
		658
		659	#if !PERL_VERSION_ATLEAST (5,9,0)
		660	rss += slot->retstack_max * sizeof (OP *);
		661	#endif
		662	}
		663
		664	return rss;
		665	}
		666
		667	/** coroutine stack handling ************************************************/
		668
		669	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		670
		671	/*
		672	* This overrides the default magic get method of %SIG elements.
		673	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		674	* and instead of tryign to save and restore the hash elements, we just provide
		675	* readback here.
		676	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		677	* not expecting this to actually change the hook. This is a potential problem
		678	* when a schedule happens then, but we ignore this.
		679	*/
496	static void	680	static int
497	setup_coro (struct coro *coro)	681	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		682	{
		683	const char *s = MgPV_nolen_const (mg);
		684
		685	if (*s == '_')
		686	{
		687	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		688	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		689	}
		690
		691	return orig_sigelem_get (aTHX_ sv, mg);
		692	}
		693
		694	static void
		695	coro_setup (pTHX_ struct coro *coro)
498	{	696	{
499	/*	697	/*
500	* emulate part of the perl startup here.	698	* emulate part of the perl startup here.
501	*/	699	*/
502
503	coro_init_stacks ();	700	coro_init_stacks (aTHX);
504		701
		702	PL_runops = RUNOPS_DEFAULT;
505	PL_curcop = &PL_compiling;	703	PL_curcop = &PL_compiling;
506	PL_in_eval = EVAL_NULL;	704	PL_in_eval = EVAL_NULL;
		705	PL_comppad = 0;
507	PL_curpm = 0;	706	PL_curpm = 0;
		707	PL_curpad = 0;
508	PL_localizing = 0;	708	PL_localizing = 0;
509	PL_dirty = 0;	709	PL_dirty = 0;
510	PL_restartop = 0;	710	PL_restartop = 0;
511		711
		712	/* recreate the die/warn hooks */
		713	PL_diehook = 0;
		714	hv_store (hv_sig, "__DIE__", sizeof ("__DIE__") - 1, newSV (0), 0);
		715	PL_diehook = SvREFCNT_inc (rv_diehook);
		716
		717	PL_warnhook = 0;
		718	hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, newSV (0), 0);
		719	PL_warnhook = SvREFCNT_inc (rv_warnhook);
		720
		721	GvSV (PL_defgv) = newSV (0);
		722	GvAV (PL_defgv) = coro->args; coro->args = 0;
		723	GvSV (PL_errgv) = newSV (0);
		724	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		725	PL_rs = newSVsv (GvSV (irsgv));
		726	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
		727
512	{	728	{
513	dSP;	729	dSP;
514	LOGOP myop;	730	LOGOP myop;
515		731
516	SvREFCNT_dec (GvAV (PL_defgv));
517	GvAV (PL_defgv) = coro->args; coro->args = 0;
518
519	Zero (&myop, 1, LOGOP);	732	Zero (&myop, 1, LOGOP);
520	myop.op_next = Nullop;	733	myop.op_next = Nullop;
521	myop.op_flags = OPf_WANT_VOID;	734	myop.op_flags = OPf_WANT_VOID;
522		735
523	PUSHMARK (SP);	736	PUSHMARK (SP);
524	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	737	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
525	PUTBACK;	738	PUTBACK;
526	PL_op = (OP *)&myop;	739	PL_op = (OP *)&myop;
527	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	740	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
528	SPAGAIN;	741	SPAGAIN;
529	}	742	}
530		743
531	ENTER; /* necessary e.g. for dounwind */	744	/* this newly created coroutine might be run on an existing cctx which most
		745	* likely was suspended in set_stacklevel, called from entersub.
		746	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		747	* so we ENTER here for symmetry
		748	*/
		749	ENTER;
532	}	750	}
533		751
534	static void	752	static void
		753	coro_destroy (pTHX_ struct coro *coro)
		754	{
		755	if (!IN_DESTRUCT)
		756	{
		757	/* restore all saved variables and stuff */
		758	LEAVE_SCOPE (0);
		759	assert (PL_tmps_floor == -1);
		760
		761	/* free all temporaries */
		762	FREETMPS;
		763	assert (PL_tmps_ix == -1);
		764
		765	/* unwind all extra stacks */
		766	POPSTACK_TO (PL_mainstack);
		767
		768	/* unwind main stack */
		769	dounwind (-1);
		770	}
		771
		772	SvREFCNT_dec (GvSV (PL_defgv));
		773	SvREFCNT_dec (GvAV (PL_defgv));
		774	SvREFCNT_dec (GvSV (PL_errgv));
		775	SvREFCNT_dec (PL_defoutgv);
		776	SvREFCNT_dec (PL_rs);
		777	SvREFCNT_dec (GvSV (irsgv));
		778
		779	SvREFCNT_dec (PL_diehook);
		780	SvREFCNT_dec (PL_warnhook);
		781
		782	SvREFCNT_dec (coro->saved_deffh);
		783	SvREFCNT_dec (coro->throw);
		784
		785	coro_destroy_stacks (aTHX);
		786	}
		787
		788	static void
535	free_coro_mortal ()	789	free_coro_mortal (pTHX)
536	{	790	{
537	if (coro_mortal)	791	if (expect_true (coro_mortal))
538	{	792	{
539	SvREFCNT_dec (coro_mortal);	793	SvREFCNT_dec (coro_mortal);
540	coro_mortal = 0;	794	coro_mortal = 0;
541	}	795	}
542	}	796	}
543		797
		798	static int
		799	runops_trace (pTHX)
		800	{
		801	COP *oldcop = 0;
		802	int oldcxix = -2;
		803	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		804	coro_cctx *cctx = coro->cctx;
		805
		806	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		807	{
		808	PERL_ASYNC_CHECK ();
		809
		810	if (cctx->flags & CC_TRACE_ALL)
		811	{
		812	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		813	{
		814	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		815	SV **bot, **top;
		816	AV *av = newAV (); /* return values */
		817	SV **cb;
		818	dSP;
		819
		820	GV *gv = CvGV (cx->blk_sub.cv);
		821	SV *fullname = sv_2mortal (newSV (0));
		822	if (isGV (gv))
		823	gv_efullname3 (fullname, gv, 0);
		824
		825	bot = PL_stack_base + cx->blk_oldsp + 1;
		826	top = cx->blk_gimme == G_ARRAY ? SP + 1
		827	: cx->blk_gimme == G_SCALAR ? bot + 1
		828	: bot;
		829
		830	av_extend (av, top - bot);
		831	while (bot < top)
		832	av_push (av, SvREFCNT_inc (*bot++));
		833
		834	PL_runops = RUNOPS_DEFAULT;
		835	ENTER;
		836	SAVETMPS;
		837	EXTEND (SP, 3);
		838	PUSHMARK (SP);
		839	PUSHs (&PL_sv_no);
		840	PUSHs (fullname);
		841	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		842	PUTBACK;
		843	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		844	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		845	SPAGAIN;
		846	FREETMPS;
		847	LEAVE;
		848	PL_runops = runops_trace;
		849	}
		850
		851	if (oldcop != PL_curcop)
		852	{
		853	oldcop = PL_curcop;
		854
		855	if (PL_curcop != &PL_compiling)
		856	{
		857	SV **cb;
		858
		859	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		860	{
		861	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		862
		863	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		864	{
		865	runops_proc_t old_runops = PL_runops;
		866	dSP;
		867	GV *gv = CvGV (cx->blk_sub.cv);
		868	SV *fullname = sv_2mortal (newSV (0));
		869
		870	if (isGV (gv))
		871	gv_efullname3 (fullname, gv, 0);
		872
		873	PL_runops = RUNOPS_DEFAULT;
		874	ENTER;
		875	SAVETMPS;
		876	EXTEND (SP, 3);
		877	PUSHMARK (SP);
		878	PUSHs (&PL_sv_yes);
		879	PUSHs (fullname);
		880	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		881	PUTBACK;
		882	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		883	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		884	SPAGAIN;
		885	FREETMPS;
		886	LEAVE;
		887	PL_runops = runops_trace;
		888	}
		889
		890	oldcxix = cxstack_ix;
		891	}
		892
		893	if (cctx->flags & CC_TRACE_LINE)
		894	{
		895	dSP;
		896
		897	PL_runops = RUNOPS_DEFAULT;
		898	ENTER;
		899	SAVETMPS;
		900	EXTEND (SP, 3);
		901	PL_runops = RUNOPS_DEFAULT;
		902	PUSHMARK (SP);
		903	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		904	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		905	PUTBACK;
		906	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		907	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		908	SPAGAIN;
		909	FREETMPS;
		910	LEAVE;
		911	PL_runops = runops_trace;
		912	}
		913	}
		914	}
		915	}
		916	}
		917
		918	TAINT_NOT;
		919	return 0;
		920	}
		921
544	/* inject a fake call to Coro::State::_cctx_init into the execution */	922	/* inject a fake call to Coro::State::_cctx_init into the execution */
		923	/* _cctx_init should be careful, as it could be called at almost any time */
		924	/* during execution of a perl program */
545	static void NOINLINE	925	static void NOINLINE
546	prepare_cctx (coro_cctx *cctx)	926	cctx_prepare (pTHX_ coro_cctx *cctx)
547	{	927	{
548	dSP;	928	dSP;
549	LOGOP myop;	929	LOGOP myop;
		930
		931	PL_top_env = &PL_start_env;
		932
		933	if (cctx->flags & CC_TRACE)
		934	PL_runops = runops_trace;
550		935
551	Zero (&myop, 1, LOGOP);	936	Zero (&myop, 1, LOGOP);
552	myop.op_next = PL_op;	937	myop.op_next = PL_op;
553	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	938	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
554		939
…		…
560	PL_op = (OP *)&myop;	945	PL_op = (OP *)&myop;
561	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	946	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
562	SPAGAIN;	947	SPAGAIN;
563	}	948	}
564		949
		950	/*
		951	* this is a _very_ stripped down perl interpreter ;)
		952	*/
565	static void	953	static void
566	coro_run (void *arg)	954	cctx_run (void *arg)
567	{	955	{
		956	dTHX;
		957
568	/* coro_run is the alternative tail of transfer(), so unlock here. */	958	/* cctx_run is the alternative tail of transfer(), so unlock here. */
569	UNLOCK;	959	UNLOCK;
570		960
571	/*	961	/* we now skip the entersub that lead to transfer() */
572	* this is a _very_ stripped down perl interpreter ;)	962	PL_op = PL_op->op_next;
573	*/
574	PL_top_env = &PL_start_env;
575		963
576	/* inject call to cctx_init */	964	/* inject a fake subroutine call to cctx_init */
577	prepare_cctx ((coro_cctx *)arg);	965	cctx_prepare (aTHX_ (coro_cctx *)arg);
578		966
579	/* somebody will hit me for both perl_run and PL_restartop */	967	/* somebody or something will hit me for both perl_run and PL_restartop */
580	PL_restartop = PL_op;	968	PL_restartop = PL_op;
581	perl_run (PL_curinterp);	969	perl_run (PL_curinterp);
582		970
583	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	971	/*
584	abort ();	972	* If perl-run returns we assume exit() was being called or the coro
		973	* fell off the end, which seems to be the only valid (non-bug)
		974	* reason for perl_run to return. We try to exit by jumping to the
		975	* bootstrap-time "top" top_env, as we cannot restore the "main"
		976	* coroutine as Coro has no such concept
		977	*/
		978	PL_top_env = main_top_env;
		979	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
585	}	980	}
586		981
587	static coro_cctx *	982	static coro_cctx *
588	cctx_new ()	983	cctx_new ()
589	{	984	{
590	coro_cctx *cctx;	985	coro_cctx *cctx;
		986	void *stack_start;
		987	size_t stack_size;
591		988
592	++cctx_count;	989	++cctx_count;
593		990
594	Newz (0, cctx, 1, coro_cctx);	991	Newz (0, cctx, 1, coro_cctx);
595		992
596	#if HAVE_MMAP	993	#if HAVE_MMAP
597
598	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	994	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
599	/* mmap supposedly does allocate-on-write for us */	995	/* mmap supposedly does allocate-on-write for us */
600	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	996	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
601		997
602	if (cctx->sptr == (void *)-1)	998	if (cctx->sptr != (void *)-1)
603	{
604	perror ("FATAL: unable to mmap stack for coroutine");
605	_exit (EXIT_FAILURE);
606	}	999	{
607
608	# if STACKGUARD	1000	# if CORO_STACKGUARD
609	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	1001	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
610	# endif	1002	# endif
		1003	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		1004	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		1005	cctx->flags |= CC_MAPPED;
		1006	}
		1007	else
		1008	#endif
		1009	{
		1010	cctx->ssize = coro_stacksize * (long)sizeof (long);
		1011	New (0, cctx->sptr, coro_stacksize, long);
611		1012
612	#else
613
614	cctx->ssize = STACKSIZE * (long)sizeof (long);
615	New (0, cctx->sptr, STACKSIZE, long);
616
617	if (!cctx->sptr)	1013	if (!cctx->sptr)
618	{	1014	{
619	perror ("FATAL: unable to malloc stack for coroutine");	1015	perror ("FATAL: unable to allocate stack for coroutine");
620	_exit (EXIT_FAILURE);	1016	_exit (EXIT_FAILURE);
621	}	1017	}
622		1018
623	#endif	1019	stack_start = cctx->sptr;
		1020	stack_size = cctx->ssize;
		1021	}
624		1022
625	#if USE_VALGRIND	1023	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
626	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1024	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
627	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
628	cctx->ssize + (char *)cctx->sptr
629	);
630	#endif
631
632	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
633		1025
634	return cctx;	1026	return cctx;
635	}	1027	}
636		1028
637	static void	1029	static void
…		…
640	if (!cctx)	1032	if (!cctx)
641	return;	1033	return;
642		1034
643	--cctx_count;	1035	--cctx_count;
644		1036
645	#if USE_VALGRIND	1037	#if CORO_USE_VALGRIND
646	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1038	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
647	#endif	1039	#endif
648		1040
649	#if HAVE_MMAP	1041	#if HAVE_MMAP
		1042	if (cctx->flags & CC_MAPPED)
650	munmap (cctx->sptr, cctx->ssize);	1043	munmap (cctx->sptr, cctx->ssize);
651	#else	1044	else
		1045	#endif
652	Safefree (cctx->sptr);	1046	Safefree (cctx->sptr);
653	#endif
654		1047
655	Safefree (cctx);	1048	Safefree (cctx);
656	}	1049	}
657		1050
		1051	/* wether this cctx should be destructed */
		1052	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1053
658	static coro_cctx *	1054	static coro_cctx *
659	cctx_get ()	1055	cctx_get (pTHX)
660	{	1056	{
661	coro_cctx *cctx;	1057	while (expect_true (cctx_first))
662
663	if (cctx_first)
664	{	1058	{
665	cctx = cctx_first;	1059	coro_cctx *cctx = cctx_first;
666	cctx_first = cctx->next;	1060	cctx_first = cctx->next;
667	--cctx_idle;	1061	--cctx_idle;
668	}	1062
669	else	1063	if (expect_true (!CCTX_EXPIRED (cctx)))
670	{	1064	return cctx;
671	cctx = cctx_new ();	1065
672	PL_op = PL_op->op_next;	1066	cctx_destroy (cctx);
673	}	1067	}
674		1068
675	return cctx;	1069	return cctx_new ();
676	}	1070	}
677		1071
678	static void	1072	static void
679	cctx_put (coro_cctx *cctx)	1073	cctx_put (coro_cctx *cctx)
680	{	1074	{
681	/* free another cctx if overlimit */	1075	/* free another cctx if overlimit */
682	if (cctx_idle >= MAX_IDLE_CCTX)	1076	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
683	{	1077	{
684	coro_cctx *first = cctx_first;	1078	coro_cctx *first = cctx_first;
685	cctx_first = first->next;	1079	cctx_first = first->next;
686	--cctx_idle;	1080	--cctx_idle;
687		1081
688	assert (!first->inuse);
689	cctx_destroy (first);	1082	cctx_destroy (first);
690	}	1083	}
691		1084
692	++cctx_idle;	1085	++cctx_idle;
693	cctx->next = cctx_first;	1086	cctx->next = cctx_first;
694	cctx_first = cctx;	1087	cctx_first = cctx;
695	}	1088	}
696		1089
697	/* never call directly, always through the coro_state_transfer global variable */	1090	/** coroutine switching *****************************************************/
		1091
		1092	static void
		1093	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1094	{
		1095	if (expect_true (prev != next))
		1096	{
		1097	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1098	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1099
		1100	if (expect_false (next->flags & CF_RUNNING))
		1101	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1102
		1103	if (expect_false (next->flags & CF_DESTROYED))
		1104	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1105
		1106	if (
		1107	#if PERL_VERSION_ATLEAST (5,9,0)
		1108	expect_false (PL_parser)
		1109	#else
		1110	expect_false (PL_lex_state != LEX_NOTPARSING)
		1111	#endif
		1112	)
		1113	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1114	}
		1115	}
		1116
		1117	/* always use the TRANSFER macro */
698	static void NOINLINE	1118	static void NOINLINE
699	transfer (struct coro *prev, struct coro *next)	1119	transfer (pTHX_ struct coro *prev, struct coro *next)
700	{	1120	{
701	dSTACKLEVEL;	1121	dSTACKLEVEL;
702		1122
703	/* sometimes transfer is only called to set idle_sp */	1123	/* sometimes transfer is only called to set idle_sp */
704	if (!next)	1124	if (expect_false (!next))
705	{	1125	{
706	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1126	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
707	assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */	1127	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
708	}	1128	}
709	else if (prev != next)	1129	else if (expect_true (prev != next))
710	{	1130	{
711	coro_cctx *prev__cctx;	1131	coro_cctx *prev__cctx;
712		1132
713	if (prev->flags & CF_NEW)	1133	if (expect_false (prev->flags & CF_NEW))
714	{	1134	{
715	/* create a new empty context */	1135	/* create a new empty context */
716	Newz (0, prev->cctx, 1, coro_cctx);	1136	Newz (0, prev->cctx, 1, coro_cctx);
717	prev->cctx->inuse = 1;
718	prev->flags &= ~CF_NEW;	1137	prev->flags &= ~CF_NEW;
719	prev->flags |= CF_RUNNING;	1138	prev->flags |= CF_RUNNING;
720	}	1139	}
721		1140
722	/*TODO: must not croak here */
723	if (!prev->flags & CF_RUNNING)
724	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
725
726	if (next->flags & CF_RUNNING)
727	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
728
729	prev->flags &= ~CF_RUNNING;	1141	prev->flags &= ~CF_RUNNING;
730	next->flags |= CF_RUNNING;	1142	next->flags |= CF_RUNNING;
731		1143
732	LOCK;	1144	LOCK;
733		1145
		1146	/* first get rid of the old state */
		1147	save_perl (aTHX_ prev);
		1148
734	if (next->flags & CF_NEW)	1149	if (expect_false (next->flags & CF_NEW))
735	{	1150	{
736	/* need to start coroutine */	1151	/* need to start coroutine */
737	next->flags &= ~CF_NEW;	1152	next->flags &= ~CF_NEW;
738	/* first get rid of the old state */
739	save_perl (prev);
740	/* setup coroutine call */	1153	/* setup coroutine call */
741	setup_coro (next);	1154	coro_setup (aTHX_ next);
742	/* need a new stack */
743	assert (!next->cctx);
744	}	1155	}
745	else	1156	else
746	{
747	/* coroutine already started */
748	save_perl (prev);
749	load_perl (next);	1157	load_perl (aTHX_ next);
750	}
751		1158
752	prev__cctx = prev->cctx;	1159	prev__cctx = prev->cctx;
753		1160
754	/* possibly "free" the cctx */	1161	/* possibly "free" the cctx */
755	if (prev__cctx->idle_sp == STACKLEVEL)	1162	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
756	{	1163	{
757	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1164	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
758	assert (PL_top_env == prev__cctx->top_env);	1165	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
759		1166
760	prev->cctx = 0;	1167	prev->cctx = 0;
761		1168
		1169	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1170	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1171	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1172	if (!next->cctx)
		1173	next->cctx = cctx_get (aTHX);
		1174
762	cctx_put (prev__cctx);	1175	cctx_put (prev__cctx);
763	prev__cctx->inuse = 0;
764	}	1176	}
765		1177
		1178	++next->usecount;
		1179
766	if (!next->cctx)	1180	if (expect_true (!next->cctx))
767	{
768	next->cctx = cctx_get ();	1181	next->cctx = cctx_get (aTHX);
769	assert (!next->cctx->inuse);
770	next->cctx->inuse = 1;
771	}
772		1182
773	if (prev__cctx != next->cctx)	1183	if (expect_false (prev__cctx != next->cctx))
774	{	1184	{
775	prev__cctx->top_env = PL_top_env;	1185	prev__cctx->top_env = PL_top_env;
776	PL_top_env = next->cctx->top_env;	1186	PL_top_env = next->cctx->top_env;
777	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1187	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
778	}	1188	}
779		1189
780	free_coro_mortal ();	1190	free_coro_mortal (aTHX);
781
782	UNLOCK;	1191	UNLOCK;
		1192
		1193	if (expect_false (prev->throw || next->throw))
		1194	{
		1195	struct coro *coro = SvSTATE (coro_current);
		1196
		1197	if (coro->throw)
		1198	{
		1199	SV *exception = coro->throw;
		1200	coro->throw = 0;
		1201	sv_setsv (ERRSV, exception);
		1202	croak (0);
		1203	}
		1204	}
783	}	1205	}
784	}	1206	}
785		1207
786	struct transfer_args	1208	struct transfer_args
787	{	1209	{
788	struct coro *prev, *next;	1210	struct coro *prev, *next;
789	};	1211	};
790		1212
791	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1213	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1214	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
792		1215
		1216	/** high level stuff ********************************************************/
		1217
793	static void	1218	static int
794	coro_state_destroy (struct coro *coro)	1219	coro_state_destroy (pTHX_ struct coro *coro)
795	{	1220	{
796	if (coro->refcnt--)	1221	if (coro->flags & CF_DESTROYED)
797	return;	1222	return 0;
		1223
		1224	coro->flags |= CF_DESTROYED;
		1225
		1226	if (coro->flags & CF_READY)
		1227	{
		1228	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1229	/* alternative: look through all ready queues and remove the coro */
		1230	LOCK;
		1231	--coro_nready;
		1232	UNLOCK;
		1233	}
		1234	else
		1235	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
798		1236
799	if (coro->mainstack && coro->mainstack != main_mainstack)	1237	if (coro->mainstack && coro->mainstack != main_mainstack)
800	{	1238	{
801	struct coro temp;	1239	struct coro temp;
802	Zero (&temp, 1, struct coro);
803	temp.save = CORO_SAVE_ALL;
804		1240
805	if (coro->flags & CF_RUNNING)	1241	if (coro->flags & CF_RUNNING)
806	croak ("FATAL: tried to destroy currently running coroutine");	1242	croak ("FATAL: tried to destroy currently running coroutine");
807		1243
808	save_perl (&temp);	1244	save_perl (aTHX_ &temp);
809	load_perl (coro);	1245	load_perl (aTHX_ coro);
810		1246
811	coro_destroy_stacks ();	1247	coro_destroy (aTHX_ coro);
812		1248
813	load_perl (&temp); /* this will get rid of defsv etc.. */	1249	load_perl (aTHX_ &temp);
814		1250
815	coro->mainstack = 0;	1251	coro->slot = 0;
816	}	1252	}
817		1253
818	cctx_destroy (coro->cctx);	1254	cctx_destroy (coro->cctx);
819	SvREFCNT_dec (coro->args);	1255	SvREFCNT_dec (coro->args);
820	Safefree (coro);	1256
		1257	if (coro->next) coro->next->prev = coro->prev;
		1258	if (coro->prev) coro->prev->next = coro->next;
		1259	if (coro == coro_first) coro_first = coro->next;
		1260
		1261	return 1;
821	}	1262	}
822		1263
823	static int	1264	static int
824	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1265	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
825	{	1266	{
826	struct coro *coro = (struct coro *)mg->mg_ptr;	1267	struct coro *coro = (struct coro *)mg->mg_ptr;
827	mg->mg_ptr = 0;	1268	mg->mg_ptr = 0;
828		1269
		1270	coro->hv = 0;
		1271
		1272	if (--coro->refcnt < 0)
		1273	{
829	coro_state_destroy (coro);	1274	coro_state_destroy (aTHX_ coro);
		1275	Safefree (coro);
		1276	}
830		1277
831	return 0;	1278	return 0;
832	}	1279	}
833		1280
834	static int	1281	static int
…		…
841	return 0;	1288	return 0;
842	}	1289	}
843		1290
844	static MGVTBL coro_state_vtbl = {	1291	static MGVTBL coro_state_vtbl = {
845	0, 0, 0, 0,	1292	0, 0, 0, 0,
846	coro_state_clear,	1293	coro_state_free,
847	0,	1294	0,
848	#ifdef MGf_DUP	1295	#ifdef MGf_DUP
849	coro_state_dup,	1296	coro_state_dup,
850	#else	1297	#else
851	# define MGf_DUP 0	1298	# define MGf_DUP 0
852	#endif	1299	#endif
853	};	1300	};
854		1301
855	static struct coro *
856	SvSTATE (SV *coro)
857	{
858	HV *stash;
859	MAGIC *mg;
860
861	if (SvROK (coro))
862	coro = SvRV (coro);
863
864	stash = SvSTASH (coro);
865	if (stash != coro_stash && stash != coro_state_stash)
866	{
867	/* very slow, but rare, check */
868	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
869	croak ("Coro::State object required");
870	}
871
872	mg = SvMAGIC (coro);
873	assert (mg->mg_type == PERL_MAGIC_ext);
874	return (struct coro *)mg->mg_ptr;
875	}
876
877	static void	1302	static void
878	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1303	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
879	{	1304	{
880	ta->prev = SvSTATE (prev_sv);	1305	ta->prev = SvSTATE (prev_sv);
881	ta->next = SvSTATE (next_sv);	1306	ta->next = SvSTATE (next_sv);
		1307	TRANSFER_CHECK (*ta);
882	}	1308	}
883		1309
884	static void	1310	static void
885	api_transfer (SV *prev_sv, SV *next_sv)	1311	api_transfer (SV *prev_sv, SV *next_sv)
886	{	1312	{
		1313	dTHX;
887	struct transfer_args ta;	1314	struct transfer_args ta;
888		1315
889	prepare_transfer (&ta, prev_sv, next_sv);	1316	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
890	TRANSFER (ta);	1317	TRANSFER (ta);
891	}	1318	}
892		1319
893	static int
894	api_save (SV *coro_sv, int new_save)
895	{
896	struct coro *coro = SvSTATE (coro_sv);
897	int old_save = coro->save;
898
899	if (new_save >= 0)
900	coro->save = new_save;
901
902	return old_save;
903	}
904
905	/** Coro ********************************************************************/	1320	/** Coro ********************************************************************/
906		1321
907	#define PRIO_MAX 3
908	#define PRIO_HIGH 1
909	#define PRIO_NORMAL 0
910	#define PRIO_LOW -1
911	#define PRIO_IDLE -3
912	#define PRIO_MIN -4
913
914	/* for Coro.pm */
915	static SV *coro_current;
916	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
917	static int coro_nready;
918
919	static void	1322	static void
920	coro_enq (SV *coro_sv)	1323	coro_enq (pTHX_ SV *coro_sv)
921	{	1324	{
922	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1325	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
923	coro_nready++;
924	}	1326	}
925		1327
926	static SV *	1328	static SV *
927	coro_deq (int min_prio)	1329	coro_deq (pTHX_ int min_prio)
928	{	1330	{
929	int prio = PRIO_MAX - PRIO_MIN;	1331	int prio = PRIO_MAX - PRIO_MIN;
930		1332
931	min_prio -= PRIO_MIN;	1333	min_prio -= PRIO_MIN;
932	if (min_prio < 0)	1334	if (min_prio < 0)
933	min_prio = 0;	1335	min_prio = 0;
934		1336
935	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1337	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
936	if (AvFILLp (coro_ready [prio]) >= 0)	1338	if (AvFILLp (coro_ready [prio]) >= 0)
937	{
938	coro_nready--;
939	return av_shift (coro_ready [prio]);	1339	return av_shift (coro_ready [prio]);
940	}
941		1340
942	return 0;	1341	return 0;
943	}	1342	}
944		1343
945	static int	1344	static int
946	api_ready (SV *coro_sv)	1345	api_ready (SV *coro_sv)
947	{	1346	{
		1347	dTHX;
948	struct coro *coro;	1348	struct coro *coro;
949		1349
950	if (SvROK (coro_sv))	1350	if (SvROK (coro_sv))
951	coro_sv = SvRV (coro_sv);	1351	coro_sv = SvRV (coro_sv);
952		1352
953	coro = SvSTATE (coro_sv);	1353	coro = SvSTATE (coro_sv);
954		1354
955	if (coro->flags & CF_READY)	1355	if (coro->flags & CF_READY)
956	return 0;	1356	return 0;
957		1357
958	#if 0 /* this is actually harmless */
959	if (coro->flags & CF_RUNNING)
960	croak ("Coro::ready called on currently running coroutine");
961	#endif
962
963	coro->flags |= CF_READY;	1358	coro->flags |= CF_READY;
964		1359
965	LOCK;	1360	LOCK;
966	coro_enq (SvREFCNT_inc (coro_sv));	1361	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1362	++coro_nready;
967	UNLOCK;	1363	UNLOCK;
968		1364
969	return 1;	1365	return 1;
970	}	1366	}
971		1367
972	static int	1368	static int
973	api_is_ready (SV *coro_sv)	1369	api_is_ready (SV *coro_sv)
974	{	1370	{
		1371	dTHX;
975	return !!SvSTATE (coro_sv)->flags & CF_READY;	1372	return !!(SvSTATE (coro_sv)->flags & CF_READY);
976	}	1373	}
977		1374
978	static void	1375	static void
979	prepare_schedule (struct transfer_args *ta)	1376	prepare_schedule (pTHX_ struct transfer_args *ta)
980	{	1377	{
981	SV *prev, *next;	1378	SV *prev_sv, *next_sv;
982		1379
983	for (;;)	1380	for (;;)
984	{	1381	{
985	LOCK;	1382	LOCK;
986	next = coro_deq (PRIO_MIN);	1383	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1384
		1385	/* nothing to schedule: call the idle handler */
		1386	if (expect_false (!next_sv))
		1387	{
		1388	dSP;
		1389	UNLOCK;
		1390
		1391	ENTER;
		1392	SAVETMPS;
		1393
		1394	PUSHMARK (SP);
		1395	PUTBACK;
		1396	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1397
		1398	FREETMPS;
		1399	LEAVE;
		1400	continue;
		1401	}
		1402
		1403	ta->next = SvSTATE (next_sv);
		1404
		1405	/* cannot transfer to destroyed coros, skip and look for next */
		1406	if (expect_false (ta->next->flags & CF_DESTROYED))
		1407	{
		1408	UNLOCK;
		1409	SvREFCNT_dec (next_sv);
		1410	/* coro_nready is already taken care of by destroy */
		1411	continue;
		1412	}
		1413
		1414	--coro_nready;
987	UNLOCK;	1415	UNLOCK;
988
989	if (next)
990	break;	1416	break;
991
992	{
993	dSP;
994
995	ENTER;
996	SAVETMPS;
997
998	PUSHMARK (SP);
999	PUTBACK;
1000	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1001
1002	FREETMPS;
1003	LEAVE;
1004	}	1417	}
1005	}
1006
1007	prev = SvRV (coro_current);
1008	SvRV_set (coro_current, next);
1009		1418
1010	/* free this only after the transfer */	1419	/* free this only after the transfer */
1011	LOCK;	1420	prev_sv = SvRV (coro_current);
1012	free_coro_mortal ();
1013	UNLOCK;
1014	coro_mortal = prev;
1015
1016	assert (!SvROK(prev));//D
1017	assert (!SvROK(next));//D
1018
1019	ta->prev = SvSTATE (prev);	1421	ta->prev = SvSTATE (prev_sv);
1020	ta->next = SvSTATE (next);	1422	TRANSFER_CHECK (*ta);
1021
1022	assert (ta->next->flags & CF_READY);	1423	assert (ta->next->flags & CF_READY);
1023	ta->next->flags &= ~CF_READY;	1424	ta->next->flags &= ~CF_READY;
1024	}	1425	SvRV_set (coro_current, next_sv);
1025		1426
		1427	LOCK;
		1428	free_coro_mortal (aTHX);
		1429	coro_mortal = prev_sv;
		1430	UNLOCK;
		1431	}
		1432
1026	static void	1433	static void
1027	prepare_cede (struct transfer_args *ta)	1434	prepare_cede (pTHX_ struct transfer_args *ta)
1028	{	1435	{
1029	api_ready (coro_current);	1436	api_ready (coro_current);
1030
1031	prepare_schedule (ta);	1437	prepare_schedule (aTHX_ ta);
		1438	}
		1439
		1440	static int
		1441	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1442	{
		1443	if (coro_nready)
		1444	{
		1445	SV *prev = SvRV (coro_current);
		1446	prepare_schedule (aTHX_ ta);
		1447	api_ready (prev);
		1448	return 1;
		1449	}
		1450	else
		1451	return 0;
1032	}	1452	}
1033		1453
1034	static void	1454	static void
1035	api_schedule (void)	1455	api_schedule (void)
1036	{	1456	{
		1457	dTHX;
1037	struct transfer_args ta;	1458	struct transfer_args ta;
1038		1459
1039	prepare_schedule (&ta);	1460	prepare_schedule (aTHX_ &ta);
1040	TRANSFER (ta);	1461	TRANSFER (ta);
1041	}	1462	}
1042		1463
1043	static void	1464	static int
1044	api_cede (void)	1465	api_cede (void)
1045	{	1466	{
		1467	dTHX;
1046	struct transfer_args ta;	1468	struct transfer_args ta;
1047		1469
1048	prepare_cede (&ta);	1470	prepare_cede (aTHX_ &ta);
		1471
		1472	if (expect_true (ta.prev != ta.next))
		1473	{
1049	TRANSFER (ta);	1474	TRANSFER (ta);
		1475	return 1;
		1476	}
		1477	else
		1478	return 0;
1050	}	1479	}
1051		1480
		1481	static int
		1482	api_cede_notself (void)
		1483	{
		1484	dTHX;
		1485	struct transfer_args ta;
		1486
		1487	if (prepare_cede_notself (aTHX_ &ta))
		1488	{
		1489	TRANSFER (ta);
		1490	return 1;
		1491	}
		1492	else
		1493	return 0;
		1494	}
		1495
		1496	static void
		1497	api_trace (SV *coro_sv, int flags)
		1498	{
		1499	dTHX;
		1500	struct coro *coro = SvSTATE (coro_sv);
		1501
		1502	if (flags & CC_TRACE)
		1503	{
		1504	if (!coro->cctx)
		1505	coro->cctx = cctx_new ();
		1506	else if (!(coro->cctx->flags & CC_TRACE))
		1507	croak ("cannot enable tracing on coroutine with custom stack");
		1508
		1509	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1510	}
		1511	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1512	{
		1513	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1514
		1515	if (coro->flags & CF_RUNNING)
		1516	PL_runops = RUNOPS_DEFAULT;
		1517	else
		1518	coro->slot->runops = RUNOPS_DEFAULT;
		1519	}
		1520	}
		1521
1052	MODULE = Coro::State PACKAGE = Coro::State	1522	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1053		1523
1054	PROTOTYPES: DISABLE	1524	PROTOTYPES: DISABLE
1055		1525
1056	BOOT:	1526	BOOT:
1057	{	1527	{
1058	#ifdef USE_ITHREADS	1528	#ifdef USE_ITHREADS
1059	MUTEX_INIT (&coro_mutex);	1529	MUTEX_INIT (&coro_mutex);
1060	#endif	1530	#endif
1061	BOOT_PAGESIZE;	1531	BOOT_PAGESIZE;
1062		1532
		1533	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1534	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1535
		1536	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1537	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1538
		1539	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1540	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1541	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1542
1063	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1543	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1064		1544
		1545	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1546	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1547	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1069	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1548	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1070		1549
1071	main_mainstack = PL_mainstack;	1550	main_mainstack = PL_mainstack;
		1551	main_top_env = PL_top_env;
		1552
		1553	while (main_top_env->je_prev)
		1554	main_top_env = main_top_env->je_prev;
1072		1555
1073	coroapi.ver = CORO_API_VERSION;	1556	coroapi.ver = CORO_API_VERSION;
		1557	coroapi.rev = CORO_API_REVISION;
1074	coroapi.transfer = api_transfer;	1558	coroapi.transfer = api_transfer;
1075		1559
1076	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1560	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1077	}	1561	}
1078		1562
1079	SV *	1563	SV *
1080	new (char *klass, ...)	1564	new (char *klass, ...)
1081	CODE:	1565	CODE:
1082	{	1566	{
1083	struct coro *coro;	1567	struct coro *coro;
		1568	MAGIC *mg;
1084	HV *hv;	1569	HV *hv;
1085	int i;	1570	int i;
1086		1571
1087	Newz (0, coro, 1, struct coro);	1572	Newz (0, coro, 1, struct coro);
1088	coro->args = newAV ();	1573	coro->args = newAV ();
1089	coro->save = CORO_SAVE_ALL;
1090	coro->flags = CF_NEW;	1574	coro->flags = CF_NEW;
1091		1575
		1576	if (coro_first) coro_first->prev = coro;
		1577	coro->next = coro_first;
		1578	coro_first = coro;
		1579
1092	hv = newHV ();	1580	coro->hv = hv = newHV ();
1093	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1581	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1582	mg->mg_flags |= MGf_DUP;
1094	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1583	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1095		1584
		1585	av_extend (coro->args, items - 1);
1096	for (i = 1; i < items; i++)	1586	for (i = 1; i < items; i++)
1097	av_push (coro->args, newSVsv (ST (i)));	1587	av_push (coro->args, newSVsv (ST (i)));
1098	}	1588	}
1099	OUTPUT:	1589	OUTPUT:
1100	RETVAL	1590	RETVAL
1101		1591
1102	int	1592	# these not obviously related functions are all rolled into the same xs
1103	save (SV *coro, int new_save = -1)	1593	# function to increase chances that they all will call transfer with the same
1104	CODE:	1594	# stack offset
1105	RETVAL = api_save (coro, new_save);
1106	OUTPUT:
1107	RETVAL
1108
1109	void	1595	void
1110	_set_stacklevel (...)	1596	_set_stacklevel (...)
1111	ALIAS:	1597	ALIAS:
1112	Coro::State::transfer = 1	1598	Coro::State::transfer = 1
1113	Coro::schedule = 2	1599	Coro::schedule = 2
1114	Coro::cede = 3	1600	Coro::cede = 3
		1601	Coro::cede_notself = 4
1115	CODE:	1602	CODE:
1116	{	1603	{
1117	struct transfer_args ta;	1604	struct transfer_args ta;
1118		1605
1119	switch (ix)	1606	switch (ix)
…		…
1125		1612
1126	case 1:	1613	case 1:
1127	if (items != 2)	1614	if (items != 2)
1128	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1615	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1129		1616
1130	prepare_transfer (&ta, ST (0), ST (1));	1617	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1131	break;	1618	break;
1132		1619
1133	case 2:	1620	case 2:
1134	prepare_schedule (&ta);	1621	prepare_schedule (aTHX_ &ta);
1135	break;	1622	break;
1136		1623
1137	case 3:	1624	case 3:
1138	prepare_cede (&ta);	1625	prepare_cede (aTHX_ &ta);
		1626	break;
		1627
		1628	case 4:
		1629	if (!prepare_cede_notself (aTHX_ &ta))
		1630	XSRETURN_EMPTY;
		1631
1139	break;	1632	break;
1140	}	1633	}
1141		1634
		1635	BARRIER;
		1636	PUTBACK;
1142	TRANSFER (ta);	1637	TRANSFER (ta);
		1638	SPAGAIN; /* might be the sp of a different coroutine now */
		1639	/* be extra careful not to ever do anything after TRANSFER */
1143	}	1640	}
1144		1641
1145	void	1642	bool
1146	_clone_state_from (SV *dst, SV *src)	1643	_destroy (SV *coro_sv)
1147	CODE:	1644	CODE:
1148	{	1645	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1149	struct coro *coro_src = SvSTATE (src);	1646	OUTPUT:
1150		1647	RETVAL
1151	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1152
1153	++coro_src->refcnt;
1154	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1155	}
1156		1648
1157	void	1649	void
1158	_exit (code)	1650	_exit (code)
1159	int code	1651	int code
1160	PROTOTYPE: $	1652	PROTOTYPE: $
1161	CODE:	1653	CODE:
1162	_exit (code);	1654	_exit (code);
1163		1655
1164	int	1656	int
		1657	cctx_stacksize (int new_stacksize = 0)
		1658	CODE:
		1659	RETVAL = coro_stacksize;
		1660	if (new_stacksize)
		1661	coro_stacksize = new_stacksize;
		1662	OUTPUT:
		1663	RETVAL
		1664
		1665	int
1165	cctx_count ()	1666	cctx_count ()
1166	CODE:	1667	CODE:
1167	RETVAL = cctx_count;	1668	RETVAL = cctx_count;
1168	OUTPUT:	1669	OUTPUT:
1169	RETVAL	1670	RETVAL
…		…
1173	CODE:	1674	CODE:
1174	RETVAL = cctx_idle;	1675	RETVAL = cctx_idle;
1175	OUTPUT:	1676	OUTPUT:
1176	RETVAL	1677	RETVAL
1177		1678
		1679	void
		1680	list ()
		1681	PPCODE:
		1682	{
		1683	struct coro *coro;
		1684	for (coro = coro_first; coro; coro = coro->next)
		1685	if (coro->hv)
		1686	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1687	}
		1688
		1689	void
		1690	call (Coro::State coro, SV *coderef)
		1691	ALIAS:
		1692	eval = 1
		1693	CODE:
		1694	{
		1695	if (coro->mainstack)
		1696	{
		1697	struct coro temp;
		1698
		1699	if (!(coro->flags & CF_RUNNING))
		1700	{
		1701	save_perl (aTHX_ &temp);
		1702	load_perl (aTHX_ coro);
		1703	}
		1704
		1705	{
		1706	dSP;
		1707	ENTER;
		1708	SAVETMPS;
		1709	PUTBACK;
		1710	PUSHSTACK;
		1711	PUSHMARK (SP);
		1712
		1713	if (ix)
		1714	eval_sv (coderef, 0);
		1715	else
		1716	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1717
		1718	POPSTACK;
		1719	SPAGAIN;
		1720	FREETMPS;
		1721	LEAVE;
		1722	PUTBACK;
		1723	}
		1724
		1725	if (!(coro->flags & CF_RUNNING))
		1726	{
		1727	save_perl (aTHX_ coro);
		1728	load_perl (aTHX_ &temp);
		1729	}
		1730	}
		1731	}
		1732
		1733	SV *
		1734	is_ready (Coro::State coro)
		1735	PROTOTYPE: $
		1736	ALIAS:
		1737	is_ready = CF_READY
		1738	is_running = CF_RUNNING
		1739	is_new = CF_NEW
		1740	is_destroyed = CF_DESTROYED
		1741	CODE:
		1742	RETVAL = boolSV (coro->flags & ix);
		1743	OUTPUT:
		1744	RETVAL
		1745
		1746	void
		1747	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1748
		1749	SV *
		1750	has_stack (Coro::State coro)
		1751	PROTOTYPE: $
		1752	CODE:
		1753	RETVAL = boolSV (!!coro->cctx);
		1754	OUTPUT:
		1755	RETVAL
		1756
		1757	int
		1758	is_traced (Coro::State coro)
		1759	PROTOTYPE: $
		1760	CODE:
		1761	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1762	OUTPUT:
		1763	RETVAL
		1764
		1765	IV
		1766	rss (Coro::State coro)
		1767	PROTOTYPE: $
		1768	ALIAS:
		1769	usecount = 1
		1770	CODE:
		1771	switch (ix)
		1772	{
		1773	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1774	case 1: RETVAL = coro->usecount; break;
		1775	}
		1776	OUTPUT:
		1777	RETVAL
		1778
		1779
1178	MODULE = Coro::State PACKAGE = Coro	1780	MODULE = Coro::State PACKAGE = Coro
1179		1781
1180	BOOT:	1782	BOOT:
1181	{	1783	{
1182	int i;	1784	int i;
1183		1785
		1786	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1787	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1788	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1789
		1790	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1791	SvREADONLY_on (coro_current);
		1792
1184	coro_stash = gv_stashpv ("Coro", TRUE);	1793	coro_stash = gv_stashpv ("Coro", TRUE);
1185		1794
1186	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1795	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1187	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1796	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1188	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1797	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1189	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1798	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1190	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1799	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1191	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1800	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1192		1801
1193	coro_current = get_sv ("Coro::current", FALSE);
1194	SvREADONLY_on (coro_current);
1195
1196	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1802	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1197	coro_ready[i] = newAV ();	1803	coro_ready[i] = newAV ();
1198		1804
1199	{	1805	{
1200	SV *sv = perl_get_sv("Coro::API", 1);	1806	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1807	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1201		1808
1202	coroapi.schedule = api_schedule;	1809	coroapi.schedule = api_schedule;
1203	coroapi.save = api_save;
1204	coroapi.cede = api_cede;	1810	coroapi.cede = api_cede;
		1811	coroapi.cede_notself = api_cede_notself;
1205	coroapi.ready = api_ready;	1812	coroapi.ready = api_ready;
1206	coroapi.is_ready = api_is_ready;	1813	coroapi.is_ready = api_is_ready;
1207	coroapi.nready = &coro_nready;	1814	coroapi.nready = &coro_nready;
1208	coroapi.current = coro_current;	1815	coroapi.current = coro_current;
1209		1816
1210	GCoroAPI = &coroapi;	1817	GCoroAPI = &coroapi;
1211	sv_setiv (sv, (IV)&coroapi);	1818	sv_setiv (sv, (IV)&coroapi);
1212	SvREADONLY_on (sv);	1819	SvREADONLY_on (sv);
1213	}	1820	}
…		…
1229	RETVAL = coro->prio;	1836	RETVAL = coro->prio;
1230		1837
1231	if (items > 1)	1838	if (items > 1)
1232	{	1839	{
1233	if (ix)	1840	if (ix)
1234	newprio += coro->prio;	1841	newprio = coro->prio - newprio;
1235		1842
1236	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1843	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1237	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1844	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1238		1845
1239	coro->prio = newprio;	1846	coro->prio = newprio;
1240	}	1847	}
1241	}	1848	}
		1849	OUTPUT:
		1850	RETVAL
1242		1851
1243	SV *	1852	SV *
1244	ready (SV *self)	1853	ready (SV *self)
1245	PROTOTYPE: $	1854	PROTOTYPE: $
1246	CODE:	1855	CODE:
1247	RETVAL = boolSV (api_ready (self));	1856	RETVAL = boolSV (api_ready (self));
1248	OUTPUT:	1857	OUTPUT:
1249	RETVAL	1858	RETVAL
1250		1859
1251	SV *
1252	is_ready (SV *self)
1253	PROTOTYPE: $
1254	CODE:
1255	RETVAL = boolSV (api_is_ready (self));
1256	OUTPUT:
1257	RETVAL
1258
1259	int	1860	int
1260	nready (...)	1861	nready (...)
1261	PROTOTYPE:	1862	PROTOTYPE:
1262	CODE:	1863	CODE:
1263	RETVAL = coro_nready;	1864	RETVAL = coro_nready;
1264	OUTPUT:	1865	OUTPUT:
1265	RETVAL	1866	RETVAL
1266		1867
		1868	void
		1869	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1870	PROTOTYPE: $;$
		1871	CODE:
		1872	SvREFCNT_dec (self->throw);
		1873	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1874
		1875	# for async_pool speedup
		1876	void
		1877	_pool_1 (SV *cb)
		1878	CODE:
		1879	{
		1880	struct coro *coro = SvSTATE (coro_current);
		1881	HV *hv = (HV *)SvRV (coro_current);
		1882	AV *defav = GvAV (PL_defgv);
		1883	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1884	AV *invoke_av;
		1885	int i, len;
		1886
		1887	if (!invoke)
		1888	croak ("\3async_pool terminate\2\n");
		1889
		1890	SvREFCNT_dec (coro->saved_deffh);
		1891	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1892
		1893	hv_store (hv, "desc", sizeof ("desc") - 1,
		1894	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1895
		1896	invoke_av = (AV *)SvRV (invoke);
		1897	len = av_len (invoke_av);
		1898
		1899	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1900
		1901	if (len > 0)
		1902	{
		1903	av_fill (defav, len - 1);
		1904	for (i = 0; i < len; ++i)
		1905	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1906	}
		1907
		1908	SvREFCNT_dec (invoke);
		1909	}
		1910
		1911	void
		1912	_pool_2 (SV *cb)
		1913	CODE:
		1914	{
		1915	struct coro *coro = SvSTATE (coro_current);
		1916
		1917	sv_setsv (cb, &PL_sv_undef);
		1918
		1919	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1920	coro->saved_deffh = 0;
		1921
		1922	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1923	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1924	croak ("\3async_pool terminate\2\n");
		1925
		1926	av_clear (GvAV (PL_defgv));
		1927	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1928	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1929
		1930	coro->prio = 0;
		1931
		1932	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1933	api_trace (coro_current, 0);
		1934
		1935	av_push (av_async_pool, newSVsv (coro_current));
		1936	}
		1937
		1938
1267	MODULE = Coro::State PACKAGE = Coro::AIO	1939	MODULE = Coro::State PACKAGE = Coro::AIO
1268		1940
1269	SV *	1941	SV *
1270	_get_state ()	1942	_get_state ()
1271	CODE:	1943	CODE:

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