[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.218 by root, Mon Dec 3 00:41:45 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	#include <stdio.h>	12	#include <stdio.h>
44	#include <errno.h>	13	#include <errno.h>
45	#include <assert.h>	14	#include <assert.h>
46		15	#include <inttypes.h> /* portable stdint.h */
47	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
48	# undef STACKGUARD
49	#endif
50
51	#ifndef STACKGUARD
52	# define STACKGUARD 0
53	#endif
54		16
55	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
56	# include <unistd.h>	18	# include <unistd.h>
57	# include <sys/mman.h>	19	# include <sys/mman.h>
58	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
73	#else	35	#else
74	# define PAGESIZE 0	36	# define PAGESIZE 0
75	# define BOOT_PAGESIZE (void)0	37	# define BOOT_PAGESIZE (void)0
76	#endif	38	#endif
77		39
78	/* The next macro should declare a variable stacklevel that contains and approximation	40	#if CORO_USE_VALGRIND
79	* to the current C stack pointer. Its property is that it changes with each call	41	# include <valgrind/valgrind.h>
80	* 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. */
81	#define dSTACKLEVEL int stacklevel	105	#define dSTACKLEVEL volatile char stacklevel
82	#define STACKLEVEL ((void *)&stacklevel)	106	#define STACKLEVEL ((void *)&stacklevel)
83		107
84	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
85		109
86	#if __GNUC__ >= 3	110	#if __GNUC__ >= 3
87	# 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))
88	#else	114	#else
89	# define attribute(x)	115	# define attribute(x)
		116	# define BARRIER
		117	# define expect(expr,value) (expr)
90	#endif	118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
91		122
92	#define NOINLINE attribute ((noinline))	123	#define NOINLINE attribute ((noinline))
93		124
94	#include "CoroAPI.h"	125	#include "CoroAPI.h"
95		126
…		…
100	#else	131	#else
101	# define LOCK (void)0	132	# define LOCK (void)0
102	# define UNLOCK (void)0	133	# define UNLOCK (void)0
103	#endif	134	#endif
104		135
		136	/* helper storage struct for Coro::AIO */
105	struct io_state	137	struct io_state
106	{	138	{
107	int errorno;	139	int errorno;
108	I32 laststype;	140	I32 laststype;
109	int laststatval;	141	int laststatval;
110	Stat_t statcache;	142	Stat_t statcache;
111	};	143	};
112		144
		145	static size_t coro_stacksize = CORO_STACKSIZE;
113	static struct CoroAPI coroapi;	146	static struct CoroAPI coroapi;
114	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;
115	static HV coro_state_stash, coro_stash;	149	static HV coro_state_stash, coro_stash;
116	static SV coro_mortal; / will be freed after next transfer */	150	static volatile SV coro_mortal; / will be freed after next transfer */
		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;
117		162
118	static struct coro_cctx *cctx_first;	163	static struct coro_cctx *cctx_first;
119	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	};
120		174
121	/* this is a structure representing a c-level coroutine */	175	/* this is a structure representing a c-level coroutine */
122	typedef struct coro_cctx {	176	typedef struct coro_cctx {
123	struct coro_cctx *next;	177	struct coro_cctx *next;
124		178
125	/* the stack */	179	/* the stack */
126	void *sptr;	180	void *sptr;
127	long ssize; /* positive == mmap, otherwise malloc */	181	size_t ssize;
128		182
129	/* cpu state */	183	/* cpu state */
130	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 */
131	JMPENV *top_env;	186	JMPENV *top_env;
132	coro_context cctx;	187	coro_context cctx;
133		188
134	int inuse;
135
136	#if USE_VALGRIND	189	#if CORO_USE_VALGRIND
137	int valgrind_id;	190	int valgrind_id;
138	#endif	191	#endif
		192	unsigned char flags;
139	} coro_cctx;	193	} coro_cctx;
140		194
141	enum {	195	enum {
142	CF_RUNNING = 0x0001, /* coroutine is running */	196	CF_RUNNING = 0x0001, /* coroutine is running */
143	CF_READY = 0x0002, /* coroutine is ready */	197	CF_READY = 0x0002, /* coroutine is ready */
144	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 */
145	};	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))
146		214
147	/* this is a structure representing a perl-level coroutine */	215	/* this is a structure representing a perl-level coroutine */
148	struct coro {	216	struct coro {
149	/* the c coroutine allocated to this perl coroutine, if any */	217	/* the c coroutine allocated to this perl coroutine, if any */
150	coro_cctx *cctx;	218	coro_cctx *cctx;
151		219
		220	/* process data */
		221	AV *mainstack;
		222	perl_slots slot; / basically the saved sp */
		223
152	/* data associated with this coroutine (initial args) */	224	AV args; / data associated with this coroutine (initial args) */
153	AV *args;	225	int refcnt; /* coroutines are refcounted, yes */
154	int refcnt;
155	int save; /* CORO_SAVE flags */
156	int flags; /* CF_ flags */	226	int flags; /* CF_ flags */
		227	HV hv; / the perl hash associated with this coro, if any */
157		228
158	/* optionally saved, might be zero */	229	/* statistics */
159	AV defav; / @_ */	230	int usecount; /* number of transfers to this coro */
160	SV defsv; / $_ */
161	SV errsv; / $@ */
162	SV irssv; / $/ */
163	SV irssv_sv; / real $/ cache */
164
165	#define VAR(name,type) type name;
166	# include "state.h"
167	#undef VAR
168		231
169	/* coro process data */	232	/* coro process data */
170	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;
171	};	241	};
172		242
173	typedef struct coro *Coro__State;	243	typedef struct coro *Coro__State;
174	typedef struct coro *Coro__State_or_hashref;	244	typedef struct coro *Coro__State_or_hashref;
175		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
176	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 *
177	coro_clone_padlist (CV *cv)	294	coro_clone_padlist (pTHX_ CV *cv)
178	{	295	{
179	AV *padlist = CvPADLIST (cv);	296	AV *padlist = CvPADLIST (cv);
180	AV newpadlist, newpad;	297	AV newpadlist, newpad;
181		298
182	newpadlist = newAV ();	299	newpadlist = newAV ();
…		…
194		311
195	return newpadlist;	312	return newpadlist;
196	}	313	}
197		314
198	static void	315	static void
199	free_padlist (AV *padlist)	316	free_padlist (pTHX_ AV *padlist)
200	{	317	{
201	/* may be during global destruction */	318	/* may be during global destruction */
202	if (SvREFCNT (padlist))	319	if (SvREFCNT (padlist))
203	{	320	{
204	I32 i = AvFILLp (padlist);	321	I32 i = AvFILLp (padlist);
…		…
225	AV *padlist;	342	AV *padlist;
226	AV av = (AV )mg->mg_obj;	343	AV av = (AV )mg->mg_obj;
227		344
228	/* casting is fun. */	345	/* casting is fun. */
229	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	346	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
230	free_padlist (padlist);	347	free_padlist (aTHX_ padlist);
231
232	SvREFCNT_dec (av);
233		348
234	return 0;	349	return 0;
235	}	350	}
236		351
237	#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
238		354
239	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	};
240		359
241	#define CORO_MAGIC(cv) \	360	#define CORO_MAGIC(sv,type) \
242	SvMAGIC (cv) \	361	SvMAGIC (sv) \
243	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (sv)->mg_type == type \
244	? SvMAGIC (cv) \	363	? SvMAGIC (sv) \
245	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find (sv, type) \
246	: 0	365	: 0
247		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
248	/* the next two functions merely cache the padlists */	396	/* the next two functions merely cache the padlists */
249	static void	397	static void
250	get_padlist (CV *cv)	398	get_padlist (pTHX_ CV *cv)
251	{	399	{
252	MAGIC *mg = CORO_MAGIC (cv);	400	MAGIC *mg = CORO_MAGIC_cv (cv);
253	AV *av;	401	AV *av;
254		402
255	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	403	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
256	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	404	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	405	else
258	{	406	{
259	#if 0	407	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	408	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	409	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	410	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	411	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	412	SvREFCNT_dec (cp);
265	#else	413	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	414	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	415	#endif
268	}	416	}
269	}	417	}
270		418
271	static void	419	static void
272	put_padlist (CV *cv)	420	put_padlist (pTHX_ CV *cv)
273	{	421	{
274	MAGIC *mg = CORO_MAGIC (cv);	422	MAGIC *mg = CORO_MAGIC_cv (cv);
275	AV *av;	423	AV *av;
276		424
277	if (!mg)	425	if (expect_false (!mg))
278	{	426	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
279	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
280	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
281	mg->mg_virtual = &vtbl_coro;
282	mg->mg_obj = (SV *)newAV ();
283	}
284		427
285	av = (AV *)mg->mg_obj;	428	av = (AV *)mg->mg_obj;
286		429
287	if (AvFILLp (av) >= AvMAX (av))	430	if (expect_false (AvFILLp (av) >= AvMAX (av)))
288	av_extend (av, AvMAX (av) + 1);	431	av_extend (av, AvMAX (av) + 1);
289		432
290	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	433	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291	}	434	}
292		435
293	#define SB do {	436	/ load & save, init *****************************************************/
294	#define SE } while (0)
295		437
296	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
297
298	static void	438	static void
299	load_perl (Coro__State c)	439	load_perl (pTHX_ Coro__State c)
300	{	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
301	#define VAR(name,type) PL_ ## name = c->name;	451	#define VAR(name,type) PL_ ## name = slot->name;
302	# include "state.h"	452	# include "state.h"
303	#undef VAR	453	#undef VAR
304
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
308	if (c->irssv)
309	{
310	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
311	SvREFCNT_dec (c->irssv);
312	else
313	{
314	REPLACE_SV (PL_rs, c->irssv);
315	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
316	sv_setsv (c->irssv_sv, PL_rs);
317	}
318	}
319		454
320	{	455	{
321	dSP;	456	dSP;
		457
322	CV *cv;	458	CV *cv;
323		459
324	/* now do the ugly restore mess */	460	/* now do the ugly restore mess */
325	while ((cv = (CV *)POPs))	461	while (expect_true (cv = (CV *)POPs))
326	{	462	{
327	put_padlist (cv); /* mark this padlist as available */	463	put_padlist (aTHX_ cv); /* mark this padlist as available */
328	CvDEPTH (cv) = PTR2IV (POPs);	464	CvDEPTH (cv) = PTR2IV (POPs);
329	CvPADLIST (cv) = (AV *)POPs;	465	CvPADLIST (cv) = (AV *)POPs;
330	}	466	}
331		467
332	PUTBACK;	468	PUTBACK;
333	}	469	}
334	}	470	}
335		471
336	static void	472	static void
337	save_perl (Coro__State c)	473	save_perl (pTHX_ Coro__State c)
338	{	474	{
339	{	475	{
340	dSP;	476	dSP;
341	I32 cxix = cxstack_ix;	477	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	478	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	481	/*
346	* 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
347	* (and reinitialize) all cv's in the whole callchain :(	483	* (and reinitialize) all cv's in the whole callchain :(
348	*/	484	*/
349		485
350	PUSHs (Nullsv);	486	XPUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	487	/* this loop was inspired by pp_caller */
352	for (;;)	488	for (;;)
353	{	489	{
354	while (cxix >= 0)	490	while (expect_true (cxix >= 0))
355	{	491	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	492	PERL_CONTEXT *cx = &ccstk[cxix--];
357		493
358	if (CxTYPE (cx) == CXt_SUB)	494	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
359	{	495	{
360	CV *cv = cx->blk_sub.cv;	496	CV *cv = cx->blk_sub.cv;
361		497
362	if (CvDEPTH (cv))	498	if (expect_true (CvDEPTH (cv)))
363	{	499	{
364	EXTEND (SP, 3);	500	EXTEND (SP, 3);
365
366	PUSHs ((SV *)CvPADLIST (cv));	501	PUSHs ((SV *)CvPADLIST (cv));
367	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	502	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
368	PUSHs ((SV *)cv);	503	PUSHs ((SV *)cv);
369		504
370	CvDEPTH (cv) = 0;	505	CvDEPTH (cv) = 0;
371	get_padlist (cv);	506	get_padlist (aTHX_ cv);
372	}	507	}
373	}	508	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE (cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	509	}
383		510
384	if (top_si->si_type == PERLSI_MAIN)	511	if (expect_true (top_si->si_type == PERLSI_MAIN))
385	break;	512	break;
386		513
387	top_si = top_si->si_prev;	514	top_si = top_si->si_prev;
388	ccstk = top_si->si_cxstack;	515	ccstk = top_si->si_cxstack;
389	cxix = top_si->si_cxix;	516	cxix = top_si->si_cxix;
390	}	517	}
391		518
392	PUTBACK;	519	PUTBACK;
393	}	520	}
394		521
395	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 */
396	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	523	/* we manually unroll here, as usually 2 slots is enough */
397	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	524	if (SLOT_COUNT >= 1) CXINC;
398	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 */
399		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
400	#define VAR(name,type)c->name = PL_ ## name;	544	#define VAR(name,type) slot->name = PL_ ## name;
401	# include "state.h"	545	# include "state.h"
402	#undef VAR	546	#undef VAR
		547	}
403	}	548	}
404		549
405	/*	550	/*
406	* allocate various perl stacks. This is an exact copy	551	* allocate various perl stacks. This is an exact copy
407	* of perl.c:init_stacks, except that it uses less memory	552	* of perl.c:init_stacks, except that it uses less memory
408	* on the (sometimes correct) assumption that coroutines do	553	* on the (sometimes correct) assumption that coroutines do
409	* not usually need a lot of stackspace.	554	* not usually need a lot of stackspace.
410	*/	555	*/
		556	#if CORO_PREFER_PERL_FUNCTIONS
		557	# define coro_init_stacks init_stacks
		558	#else
411	static void	559	static void
412	coro_init_stacks ()	560	coro_init_stacks (pTHX)
413	{	561	{
414	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	562	PL_curstackinfo = new_stackinfo(32, 8);
415	PL_curstackinfo->si_type = PERLSI_MAIN;	563	PL_curstackinfo->si_type = PERLSI_MAIN;
416	PL_curstack = PL_curstackinfo->si_stack;	564	PL_curstack = PL_curstackinfo->si_stack;
417	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	565	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
418		566
419	PL_stack_base = AvARRAY(PL_curstack);	567	PL_stack_base = AvARRAY(PL_curstack);
420	PL_stack_sp = PL_stack_base;	568	PL_stack_sp = PL_stack_base;
421	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	569	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
422		570
423	New(50,PL_tmps_stack,128,SV*);	571	New(50,PL_tmps_stack,32,SV*);
424	PL_tmps_floor = -1;	572	PL_tmps_floor = -1;
425	PL_tmps_ix = -1;	573	PL_tmps_ix = -1;
426	PL_tmps_max = 128;	574	PL_tmps_max = 32;
427		575
428	New(54,PL_markstack,32,I32);	576	New(54,PL_markstack,16,I32);
429	PL_markstack_ptr = PL_markstack;	577	PL_markstack_ptr = PL_markstack;
430	PL_markstack_max = PL_markstack + 32;	578	PL_markstack_max = PL_markstack + 16;
431		579
432	#ifdef SET_MARK_OFFSET	580	#ifdef SET_MARK_OFFSET
433	SET_MARK_OFFSET;	581	SET_MARK_OFFSET;
434	#endif	582	#endif
435		583
436	New(54,PL_scopestack,32,I32);	584	New(54,PL_scopestack,8,I32);
437	PL_scopestack_ix = 0;	585	PL_scopestack_ix = 0;
438	PL_scopestack_max = 32;	586	PL_scopestack_max = 8;
439		587
440	New(54,PL_savestack,64,ANY);	588	New(54,PL_savestack,24,ANY);
441	PL_savestack_ix = 0;	589	PL_savestack_ix = 0;
442	PL_savestack_max = 64;	590	PL_savestack_max = 24;
443		591
444	#if !PERL_VERSION_ATLEAST (5,9,0)	592	#if !PERL_VERSION_ATLEAST (5,9,0)
445	New(54,PL_retstack,16,OP*);	593	New(54,PL_retstack,4,OP*);
446	PL_retstack_ix = 0;	594	PL_retstack_ix = 0;
447	PL_retstack_max = 16;	595	PL_retstack_max = 4;
448	#endif	596	#endif
449	}	597	}
		598	#endif
450		599
451	/*	600	/*
452	* destroy the stacks, the callchain etc...	601	* destroy the stacks, the callchain etc...
453	*/	602	*/
454	static void	603	static void
455	coro_destroy_stacks ()	604	coro_destroy_stacks (pTHX)
456	{	605	{
457	if (!IN_DESTRUCT)
458	{
459	/* is this ugly, I ask? */
460	LEAVE_SCOPE (0);
461
462	/* sure it is, but more important: is it correct?? :/ */
463	FREETMPS;
464
465	/POPSTACK_TO (PL_mainstack);//D//use/
466	}
467
468	while (PL_curstackinfo->si_next)	606	while (PL_curstackinfo->si_next)
469	PL_curstackinfo = PL_curstackinfo->si_next;	607	PL_curstackinfo = PL_curstackinfo->si_next;
470		608
471	while (PL_curstackinfo)	609	while (PL_curstackinfo)
472	{	610	{
473	PERL_SI *p = PL_curstackinfo->si_prev;	611	PERL_SI *p = PL_curstackinfo->si_prev;
474		612
475	{ /D//remove/
476	dSP;
477	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
478	PUTBACK; /* possibly superfluous */
479	}
480
481	if (!IN_DESTRUCT)	613	if (!IN_DESTRUCT)
482	{
483	dounwind (-1);/D//remove/
484	SvREFCNT_dec (PL_curstackinfo->si_stack);	614	SvREFCNT_dec (PL_curstackinfo->si_stack);
485	}
486		615
487	Safefree (PL_curstackinfo->si_cxstack);	616	Safefree (PL_curstackinfo->si_cxstack);
488	Safefree (PL_curstackinfo);	617	Safefree (PL_curstackinfo);
489	PL_curstackinfo = p;	618	PL_curstackinfo = p;
490	}	619	}
…		…
496	#if !PERL_VERSION_ATLEAST (5,9,0)	625	#if !PERL_VERSION_ATLEAST (5,9,0)
497	Safefree (PL_retstack);	626	Safefree (PL_retstack);
498	#endif	627	#endif
499	}	628	}
500		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	#if 0
		670	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		671
		672	/*
		673	* This overrides the default magic get method of %SIG elements.
		674	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		675	* and instead of tryign to save and restore the hash elements, we just provide
		676	* readback here.
		677	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		678	* not expecting this to actually change the hook. This is a potential problem
		679	* when a schedule happens then, but we ignore this.
		680	*/
501	static void	681	static int
502	setup_coro (struct coro *coro)	682	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		683	{
		684	return orig_sigelem_get (aTHX_ sv, mg);
		685	const char *s = MgPV_nolen_const (mg);
		686
		687	if (*s == '_')
		688	{
		689	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		690	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		691	}
		692
		693	return orig_sigelem_get (aTHX_ sv, mg);
		694	}
		695	#endif
		696
		697	static void
		698	coro_setup (pTHX_ struct coro *coro)
503	{	699	{
504	/*	700	/*
505	* emulate part of the perl startup here.	701	* emulate part of the perl startup here.
506	*/	702	*/
507
508	coro_init_stacks ();	703	coro_init_stacks (aTHX);
509		704
		705	PL_runops = RUNOPS_DEFAULT;
510	PL_curcop = &PL_compiling;	706	PL_curcop = &PL_compiling;
511	PL_in_eval = EVAL_NULL;	707	PL_in_eval = EVAL_NULL;
		708	PL_comppad = 0;
512	PL_curpm = 0;	709	PL_curpm = 0;
		710	PL_curpad = 0;
513	PL_localizing = 0;	711	PL_localizing = 0;
514	PL_dirty = 0;	712	PL_dirty = 0;
515	PL_restartop = 0;	713	PL_restartop = 0;
516		714
		715	/* recreate the die/warn hooks */
		716	PL_diehook = 0;
		717	hv_store (hv_sig, "__DIE__", sizeof ("__DIE__") - 1, newSV (0), 0);
		718	PL_diehook = SvREFCNT_inc (rv_diehook);
		719
		720	PL_warnhook = 0;
		721	hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, newSV (0), 0);
		722	PL_warnhook = SvREFCNT_inc (rv_warnhook);
		723
		724	GvSV (PL_defgv) = newSV (0);
		725	GvAV (PL_defgv) = coro->args; coro->args = 0;
		726	GvSV (PL_errgv) = newSV (0);
		727	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		728	PL_rs = newSVsv (GvSV (irsgv));
		729	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
		730
517	{	731	{
518	dSP;	732	dSP;
519	LOGOP myop;	733	LOGOP myop;
520		734
521	SvREFCNT_dec (GvAV (PL_defgv));
522	GvAV (PL_defgv) = coro->args; coro->args = 0;
523
524	Zero (&myop, 1, LOGOP);	735	Zero (&myop, 1, LOGOP);
525	myop.op_next = Nullop;	736	myop.op_next = Nullop;
526	myop.op_flags = OPf_WANT_VOID;	737	myop.op_flags = OPf_WANT_VOID;
527		738
528	PUSHMARK (SP);	739	PUSHMARK (SP);
529	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	740	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
530	PUTBACK;	741	PUTBACK;
531	PL_op = (OP *)&myop;	742	PL_op = (OP *)&myop;
532	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	743	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
533	SPAGAIN;	744	SPAGAIN;
534	}	745	}
535		746
536	ENTER; /* necessary e.g. for dounwind */	747	/* this newly created coroutine might be run on an existing cctx which most
		748	* likely was suspended in set_stacklevel, called from entersub.
		749	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		750	* so we ENTER here for symmetry
		751	*/
		752	ENTER;
537	}	753	}
538		754
539	static void	755	static void
		756	coro_destroy (pTHX_ struct coro *coro)
		757	{
		758	if (!IN_DESTRUCT)
		759	{
		760	/* restore all saved variables and stuff */
		761	LEAVE_SCOPE (0);
		762	assert (PL_tmps_floor == -1);
		763
		764	/* free all temporaries */
		765	FREETMPS;
		766	assert (PL_tmps_ix == -1);
		767
		768	/* unwind all extra stacks */
		769	POPSTACK_TO (PL_mainstack);
		770
		771	/* unwind main stack */
		772	dounwind (-1);
		773	}
		774
		775	SvREFCNT_dec (GvSV (PL_defgv));
		776	SvREFCNT_dec (GvAV (PL_defgv));
		777	SvREFCNT_dec (GvSV (PL_errgv));
		778	SvREFCNT_dec (PL_defoutgv);
		779	SvREFCNT_dec (PL_rs);
		780	SvREFCNT_dec (GvSV (irsgv));
		781
		782	SvREFCNT_dec (PL_diehook);
		783	SvREFCNT_dec (PL_warnhook);
		784
		785	SvREFCNT_dec (coro->saved_deffh);
		786	SvREFCNT_dec (coro->throw);
		787
		788	coro_destroy_stacks (aTHX);
		789	}
		790
		791	static void
540	free_coro_mortal ()	792	free_coro_mortal (pTHX)
541	{	793	{
542	if (coro_mortal)	794	if (expect_true (coro_mortal))
543	{	795	{
544	SvREFCNT_dec (coro_mortal);	796	SvREFCNT_dec (coro_mortal);
545	coro_mortal = 0;	797	coro_mortal = 0;
546	}	798	}
547	}	799	}
548		800
		801	static int
		802	runops_trace (pTHX)
		803	{
		804	COP *oldcop = 0;
		805	int oldcxix = -2;
		806	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		807	coro_cctx *cctx = coro->cctx;
		808
		809	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		810	{
		811	PERL_ASYNC_CHECK ();
		812
		813	if (cctx->flags & CC_TRACE_ALL)
		814	{
		815	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		816	{
		817	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		818	SV bot, top;
		819	AV av = newAV (); / return values */
		820	SV **cb;
		821	dSP;
		822
		823	GV *gv = CvGV (cx->blk_sub.cv);
		824	SV *fullname = sv_2mortal (newSV (0));
		825	if (isGV (gv))
		826	gv_efullname3 (fullname, gv, 0);
		827
		828	bot = PL_stack_base + cx->blk_oldsp + 1;
		829	top = cx->blk_gimme == G_ARRAY ? SP + 1
		830	: cx->blk_gimme == G_SCALAR ? bot + 1
		831	: bot;
		832
		833	av_extend (av, top - bot);
		834	while (bot < top)
		835	av_push (av, SvREFCNT_inc (*bot++));
		836
		837	PL_runops = RUNOPS_DEFAULT;
		838	ENTER;
		839	SAVETMPS;
		840	EXTEND (SP, 3);
		841	PUSHMARK (SP);
		842	PUSHs (&PL_sv_no);
		843	PUSHs (fullname);
		844	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		845	PUTBACK;
		846	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		847	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		848	SPAGAIN;
		849	FREETMPS;
		850	LEAVE;
		851	PL_runops = runops_trace;
		852	}
		853
		854	if (oldcop != PL_curcop)
		855	{
		856	oldcop = PL_curcop;
		857
		858	if (PL_curcop != &PL_compiling)
		859	{
		860	SV **cb;
		861
		862	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		863	{
		864	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		865
		866	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		867	{
		868	runops_proc_t old_runops = PL_runops;
		869	dSP;
		870	GV *gv = CvGV (cx->blk_sub.cv);
		871	SV *fullname = sv_2mortal (newSV (0));
		872
		873	if (isGV (gv))
		874	gv_efullname3 (fullname, gv, 0);
		875
		876	PL_runops = RUNOPS_DEFAULT;
		877	ENTER;
		878	SAVETMPS;
		879	EXTEND (SP, 3);
		880	PUSHMARK (SP);
		881	PUSHs (&PL_sv_yes);
		882	PUSHs (fullname);
		883	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		884	PUTBACK;
		885	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		886	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		887	SPAGAIN;
		888	FREETMPS;
		889	LEAVE;
		890	PL_runops = runops_trace;
		891	}
		892
		893	oldcxix = cxstack_ix;
		894	}
		895
		896	if (cctx->flags & CC_TRACE_LINE)
		897	{
		898	dSP;
		899
		900	PL_runops = RUNOPS_DEFAULT;
		901	ENTER;
		902	SAVETMPS;
		903	EXTEND (SP, 3);
		904	PL_runops = RUNOPS_DEFAULT;
		905	PUSHMARK (SP);
		906	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		907	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		908	PUTBACK;
		909	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		910	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		911	SPAGAIN;
		912	FREETMPS;
		913	LEAVE;
		914	PL_runops = runops_trace;
		915	}
		916	}
		917	}
		918	}
		919	}
		920
		921	TAINT_NOT;
		922	return 0;
		923	}
		924
549	/* inject a fake call to Coro::State::_cctx_init into the execution */	925	/* inject a fake call to Coro::State::_cctx_init into the execution */
		926	/* _cctx_init should be careful, as it could be called at almost any time */
		927	/* during execution of a perl program */
550	static void NOINLINE	928	static void NOINLINE
551	prepare_cctx (coro_cctx *cctx)	929	cctx_prepare (pTHX_ coro_cctx *cctx)
552	{	930	{
553	dSP;	931	dSP;
554	LOGOP myop;	932	LOGOP myop;
		933
		934	PL_top_env = &PL_start_env;
		935
		936	if (cctx->flags & CC_TRACE)
		937	PL_runops = runops_trace;
555		938
556	Zero (&myop, 1, LOGOP);	939	Zero (&myop, 1, LOGOP);
557	myop.op_next = PL_op;	940	myop.op_next = PL_op;
558	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	941	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
559		942
…		…
565	PL_op = (OP *)&myop;	948	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	949	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	950	SPAGAIN;
568	}	951	}
569		952
		953	/*
		954	* this is a _very_ stripped down perl interpreter ;)
		955	*/
570	static void	956	static void
571	coro_run (void *arg)	957	cctx_run (void *arg)
572	{	958	{
		959	dTHX;
		960
573	/* coro_run is the alternative tail of transfer(), so unlock here. */	961	/* cctx_run is the alternative tail of transfer(), so unlock here. */
574	UNLOCK;	962	UNLOCK;
575		963
576	/*	964	/* we now skip the entersub that lead to transfer() */
577	* this is a _very_ stripped down perl interpreter ;)	965	PL_op = PL_op->op_next;
578	*/
579	PL_top_env = &PL_start_env;
580		966
581	/* inject call to cctx_init */	967	/* inject a fake subroutine call to cctx_init */
582	prepare_cctx ((coro_cctx *)arg);	968	cctx_prepare (aTHX_ (coro_cctx *)arg);
583		969
584	/* somebody will hit me for both perl_run and PL_restartop */	970	/* somebody or something will hit me for both perl_run and PL_restartop */
585	PL_restartop = PL_op;	971	PL_restartop = PL_op;
586	perl_run (PL_curinterp);	972	perl_run (PL_curinterp);
587		973
588	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	974	/*
589	abort ();	975	* If perl-run returns we assume exit() was being called or the coro
		976	* fell off the end, which seems to be the only valid (non-bug)
		977	* reason for perl_run to return. We try to exit by jumping to the
		978	* bootstrap-time "top" top_env, as we cannot restore the "main"
		979	* coroutine as Coro has no such concept
		980	*/
		981	PL_top_env = main_top_env;
		982	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
590	}	983	}
591		984
592	static coro_cctx *	985	static coro_cctx *
593	cctx_new ()	986	cctx_new ()
594	{	987	{
595	coro_cctx *cctx;	988	coro_cctx *cctx;
		989	void *stack_start;
		990	size_t stack_size;
596		991
597	++cctx_count;	992	++cctx_count;
598		993
599	Newz (0, cctx, 1, coro_cctx);	994	Newz (0, cctx, 1, coro_cctx);
600		995
601	#if HAVE_MMAP	996	#if HAVE_MMAP
602
603	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	997	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
604	/* mmap supposedly does allocate-on-write for us */	998	/* mmap supposedly does allocate-on-write for us */
605	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	999	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
606		1000
607	if (cctx->sptr == (void *)-1)	1001	if (cctx->sptr != (void *)-1)
608	{
609	perror ("FATAL: unable to mmap stack for coroutine");
610	_exit (EXIT_FAILURE);
611	}	1002	{
612
613	# if STACKGUARD	1003	# if CORO_STACKGUARD
614	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	1004	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
615	# endif	1005	# endif
		1006	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		1007	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		1008	cctx->flags \|= CC_MAPPED;
		1009	}
		1010	else
		1011	#endif
		1012	{
		1013	cctx->ssize = coro_stacksize * (long)sizeof (long);
		1014	New (0, cctx->sptr, coro_stacksize, long);
616		1015
617	#else
618
619	cctx->ssize = STACKSIZE * (long)sizeof (long);
620	New (0, cctx->sptr, STACKSIZE, long);
621
622	if (!cctx->sptr)	1016	if (!cctx->sptr)
623	{	1017	{
624	perror ("FATAL: unable to malloc stack for coroutine");	1018	perror ("FATAL: unable to allocate stack for coroutine");
625	_exit (EXIT_FAILURE);	1019	_exit (EXIT_FAILURE);
626	}	1020	}
627		1021
628	#endif	1022	stack_start = cctx->sptr;
		1023	stack_size = cctx->ssize;
		1024	}
629		1025
630	#if USE_VALGRIND	1026	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
631	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1027	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
632	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
633	cctx->ssize + (char *)cctx->sptr
634	);
635	#endif
636
637	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
638		1028
639	return cctx;	1029	return cctx;
640	}	1030	}
641		1031
642	static void	1032	static void
…		…
645	if (!cctx)	1035	if (!cctx)
646	return;	1036	return;
647		1037
648	--cctx_count;	1038	--cctx_count;
649		1039
650	#if USE_VALGRIND	1040	#if CORO_USE_VALGRIND
651	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1041	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
652	#endif	1042	#endif
653		1043
654	#if HAVE_MMAP	1044	#if HAVE_MMAP
		1045	if (cctx->flags & CC_MAPPED)
655	munmap (cctx->sptr, cctx->ssize);	1046	munmap (cctx->sptr, cctx->ssize);
656	#else	1047	else
		1048	#endif
657	Safefree (cctx->sptr);	1049	Safefree (cctx->sptr);
658	#endif
659		1050
660	Safefree (cctx);	1051	Safefree (cctx);
661	}	1052	}
662		1053
		1054	/* wether this cctx should be destructed */
		1055	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1056
663	static coro_cctx *	1057	static coro_cctx *
664	cctx_get ()	1058	cctx_get (pTHX)
665	{	1059	{
666	coro_cctx *cctx;	1060	while (expect_true (cctx_first))
667
668	if (cctx_first)
669	{	1061	{
670	cctx = cctx_first;	1062	coro_cctx *cctx = cctx_first;
671	cctx_first = cctx->next;	1063	cctx_first = cctx->next;
672	--cctx_idle;	1064	--cctx_idle;
673	}	1065
674	else	1066	if (expect_true (!CCTX_EXPIRED (cctx)))
675	{	1067	return cctx;
676	cctx = cctx_new ();	1068
677	PL_op = PL_op->op_next;	1069	cctx_destroy (cctx);
678	}	1070	}
679		1071
680	return cctx;	1072	return cctx_new ();
681	}	1073	}
682		1074
683	static void	1075	static void
684	cctx_put (coro_cctx *cctx)	1076	cctx_put (coro_cctx *cctx)
685	{	1077	{
686	/* free another cctx if overlimit */	1078	/* free another cctx if overlimit */
687	if (cctx_idle >= MAX_IDLE_CCTX)	1079	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
688	{	1080	{
689	coro_cctx *first = cctx_first;	1081	coro_cctx *first = cctx_first;
690	cctx_first = first->next;	1082	cctx_first = first->next;
691	--cctx_idle;	1083	--cctx_idle;
692		1084
693	assert (!first->inuse);
694	cctx_destroy (first);	1085	cctx_destroy (first);
695	}	1086	}
696		1087
697	++cctx_idle;	1088	++cctx_idle;
698	cctx->next = cctx_first;	1089	cctx->next = cctx_first;
699	cctx_first = cctx;	1090	cctx_first = cctx;
700	}	1091	}
701		1092
702	/* never call directly, always through the coro_state_transfer global variable */	1093	/ coroutine switching ***************************************************/
		1094
		1095	static void
		1096	transfer_check (pTHX_ struct coro prev, struct coro next)
		1097	{
		1098	if (expect_true (prev != next))
		1099	{
		1100	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1101	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1102
		1103	if (expect_false (next->flags & CF_RUNNING))
		1104	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1105
		1106	if (expect_false (next->flags & CF_DESTROYED))
		1107	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1108
		1109	if (
		1110	#if PERL_VERSION_ATLEAST (5,9,0)
		1111	expect_false (PL_parser)
		1112	#else
		1113	expect_false (PL_lex_state != LEX_NOTPARSING)
		1114	#endif
		1115	)
		1116	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1117	}
		1118	}
		1119
		1120	/* always use the TRANSFER macro */
703	static void NOINLINE	1121	static void NOINLINE
704	transfer (struct coro prev, struct coro next)	1122	transfer (pTHX_ struct coro prev, struct coro next)
705	{	1123	{
706	dSTACKLEVEL;	1124	dSTACKLEVEL;
		1125	static volatile int has_throw;
707		1126
708	/* sometimes transfer is only called to set idle_sp */	1127	/* sometimes transfer is only called to set idle_sp */
709	if (!next)	1128	if (expect_false (!next))
710	{	1129	{
711	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1130	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
712	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	1131	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
713	}	1132	}
714	else if (prev != next)	1133	else if (expect_true (prev != next))
715	{	1134	{
716	coro_cctx *prev__cctx;	1135	coro_cctx *prev__cctx;
717		1136
718	if (prev->flags & CF_NEW)	1137	if (expect_false (prev->flags & CF_NEW))
719	{	1138	{
720	/* create a new empty context */	1139	/* create a new empty context */
721	Newz (0, prev->cctx, 1, coro_cctx);	1140	Newz (0, prev->cctx, 1, coro_cctx);
722	prev->cctx->inuse = 1;
723	prev->flags &= ~CF_NEW;	1141	prev->flags &= ~CF_NEW;
724	prev->flags \|= CF_RUNNING;	1142	prev->flags \|= CF_RUNNING;
725	}	1143	}
726		1144
727	/TODO: must not croak here /
728	if (!prev->flags & CF_RUNNING)
729	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
730
731	if (next->flags & CF_RUNNING)
732	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
733
734	prev->flags &= ~CF_RUNNING;	1145	prev->flags &= ~CF_RUNNING;
735	next->flags \|= CF_RUNNING;	1146	next->flags \|= CF_RUNNING;
736		1147
737	LOCK;	1148	LOCK;
738		1149
		1150	/* first get rid of the old state */
		1151	save_perl (aTHX_ prev);
		1152
739	if (next->flags & CF_NEW)	1153	if (expect_false (next->flags & CF_NEW))
740	{	1154	{
741	/* need to start coroutine */	1155	/* need to start coroutine */
742	next->flags &= ~CF_NEW;	1156	next->flags &= ~CF_NEW;
743	/* first get rid of the old state */
744	save_perl (prev);
745	/* setup coroutine call */	1157	/* setup coroutine call */
746	setup_coro (next);	1158	coro_setup (aTHX_ next);
747	/* need a new stack */
748	assert (!next->cctx);
749	}	1159	}
750	else	1160	else
751	{
752	/* coroutine already started */
753	save_perl (prev);
754	load_perl (next);	1161	load_perl (aTHX_ next);
755	}
756		1162
757	prev__cctx = prev->cctx;	1163	prev__cctx = prev->cctx;
758		1164
759	/* possibly "free" the cctx */	1165	/* possibly "free" the cctx */
760	if (prev__cctx->idle_sp == STACKLEVEL)	1166	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
761	{	1167	{
762	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1168	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
763	assert (PL_top_env == prev__cctx->top_env);	1169	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
764		1170
765	prev->cctx = 0;	1171	prev->cctx = 0;
766		1172
		1173	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1174	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1175	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1176	if (!next->cctx)
		1177	next->cctx = cctx_get (aTHX);
		1178
767	cctx_put (prev__cctx);	1179	cctx_put (prev__cctx);
768	prev__cctx->inuse = 0;
769	}	1180	}
770		1181
		1182	++next->usecount;
		1183
771	if (!next->cctx)	1184	if (expect_true (!next->cctx))
772	{
773	next->cctx = cctx_get ();	1185	next->cctx = cctx_get (aTHX);
774	assert (!next->cctx->inuse);
775	next->cctx->inuse = 1;
776	}
777		1186
		1187	has_throw = !!next->throw;
		1188
778	if (prev__cctx != next->cctx)	1189	if (expect_false (prev__cctx != next->cctx))
779	{	1190	{
780	prev__cctx->top_env = PL_top_env;	1191	prev__cctx->top_env = PL_top_env;
781	PL_top_env = next->cctx->top_env;	1192	PL_top_env = next->cctx->top_env;
782	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1193	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
783	}	1194	}
784		1195
785	free_coro_mortal ();	1196	free_coro_mortal (aTHX);
786
787	UNLOCK;	1197	UNLOCK;
		1198
		1199	if (expect_false (has_throw))
		1200	{
		1201	struct coro *coro = SvSTATE (coro_current);
		1202
		1203	if (coro->throw)
		1204	{
		1205	SV *exception = coro->throw;
		1206	coro->throw = 0;
		1207	sv_setsv (ERRSV, exception);
		1208	croak (0);
		1209	}
		1210	}
788	}	1211	}
789	}	1212	}
790		1213
791	struct transfer_args	1214	struct transfer_args
792	{	1215	{
793	struct coro prev, next;	1216	struct coro prev, next;
794	};	1217	};
795		1218
796	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1219	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1220	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
797		1221
		1222	/ high level stuff ******************************************************/
		1223
798	static void	1224	static int
799	coro_state_destroy (struct coro *coro)	1225	coro_state_destroy (pTHX_ struct coro *coro)
800	{	1226	{
801	if (coro->refcnt--)	1227	if (coro->flags & CF_DESTROYED)
802	return;	1228	return 0;
		1229
		1230	coro->flags \|= CF_DESTROYED;
		1231
		1232	if (coro->flags & CF_READY)
		1233	{
		1234	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1235	/* alternative: look through all ready queues and remove the coro */
		1236	LOCK;
		1237	--coro_nready;
		1238	UNLOCK;
		1239	}
		1240	else
		1241	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
803		1242
804	if (coro->mainstack && coro->mainstack != main_mainstack)	1243	if (coro->mainstack && coro->mainstack != main_mainstack)
805	{	1244	{
806	struct coro temp;	1245	struct coro temp;
807	Zero (&temp, 1, struct coro);
808	temp.save = CORO_SAVE_ALL;
809		1246
810	if (coro->flags & CF_RUNNING)	1247	if (coro->flags & CF_RUNNING)
811	croak ("FATAL: tried to destroy currently running coroutine");	1248	croak ("FATAL: tried to destroy currently running coroutine");
812		1249
813	save_perl (&temp);	1250	save_perl (aTHX_ &temp);
814	load_perl (coro);	1251	load_perl (aTHX_ coro);
815		1252
816	coro_destroy_stacks ();	1253	coro_destroy (aTHX_ coro);
817		1254
818	load_perl (&temp); /* this will get rid of defsv etc.. */	1255	load_perl (aTHX_ &temp);
819		1256
820	coro->mainstack = 0;	1257	coro->slot = 0;
821	}	1258	}
822		1259
823	cctx_destroy (coro->cctx);	1260	cctx_destroy (coro->cctx);
824	SvREFCNT_dec (coro->args);	1261	SvREFCNT_dec (coro->args);
825	Safefree (coro);	1262
		1263	if (coro->next) coro->next->prev = coro->prev;
		1264	if (coro->prev) coro->prev->next = coro->next;
		1265	if (coro == coro_first) coro_first = coro->next;
		1266
		1267	return 1;
826	}	1268	}
827		1269
828	static int	1270	static int
829	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1271	coro_state_free (pTHX_ SV sv, MAGIC mg)
830	{	1272	{
831	struct coro coro = (struct coro )mg->mg_ptr;	1273	struct coro coro = (struct coro )mg->mg_ptr;
832	mg->mg_ptr = 0;	1274	mg->mg_ptr = 0;
833		1275
		1276	coro->hv = 0;
		1277
		1278	if (--coro->refcnt < 0)
		1279	{
834	coro_state_destroy (coro);	1280	coro_state_destroy (aTHX_ coro);
		1281	Safefree (coro);
		1282	}
835		1283
836	return 0;	1284	return 0;
837	}	1285	}
838		1286
839	static int	1287	static int
…		…
846	return 0;	1294	return 0;
847	}	1295	}
848		1296
849	static MGVTBL coro_state_vtbl = {	1297	static MGVTBL coro_state_vtbl = {
850	0, 0, 0, 0,	1298	0, 0, 0, 0,
851	coro_state_clear,	1299	coro_state_free,
852	0,	1300	0,
853	#ifdef MGf_DUP	1301	#ifdef MGf_DUP
854	coro_state_dup,	1302	coro_state_dup,
855	#else	1303	#else
856	# define MGf_DUP 0	1304	# define MGf_DUP 0
857	#endif	1305	#endif
858	};	1306	};
859		1307
860	static struct coro *
861	SvSTATE (SV *coro)
862	{
863	HV *stash;
864	MAGIC *mg;
865
866	if (SvROK (coro))
867	coro = SvRV (coro);
868
869	stash = SvSTASH (coro);
870	if (stash != coro_stash && stash != coro_state_stash)
871	{
872	/* very slow, but rare, check */
873	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
874	croak ("Coro::State object required");
875	}
876
877	mg = SvMAGIC (coro);
878	assert (mg->mg_type == PERL_MAGIC_ext);
879	return (struct coro *)mg->mg_ptr;
880	}
881
882	static void	1308	static void
883	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1309	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
884	{	1310	{
885	ta->prev = SvSTATE (prev_sv);	1311	ta->prev = SvSTATE (prev_sv);
886	ta->next = SvSTATE (next_sv);	1312	ta->next = SvSTATE (next_sv);
		1313	TRANSFER_CHECK (*ta);
887	}	1314	}
888		1315
889	static void	1316	static void
890	api_transfer (SV prev_sv, SV next_sv)	1317	api_transfer (SV prev_sv, SV next_sv)
891	{	1318	{
		1319	dTHX;
892	struct transfer_args ta;	1320	struct transfer_args ta;
893		1321
894	prepare_transfer (&ta, prev_sv, next_sv);	1322	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
895	TRANSFER (ta);	1323	TRANSFER (ta);
896	}	1324	}
897		1325
898	static int
899	api_save (SV *coro_sv, int new_save)
900	{
901	struct coro *coro = SvSTATE (coro_sv);
902	int old_save = coro->save;
903
904	if (new_save >= 0)
905	coro->save = new_save;
906
907	return old_save;
908	}
909
910	/ Coro ******************************************************************/	1326	/ Coro ******************************************************************/
911		1327
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static SV *coro_current;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1328	static void
925	coro_enq (SV *coro_sv)	1329	coro_enq (pTHX_ SV *coro_sv)
926	{	1330	{
927	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1331	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;
929	}	1332	}
930		1333
931	static SV *	1334	static SV *
932	coro_deq (int min_prio)	1335	coro_deq (pTHX)
933	{	1336	{
934	int prio = PRIO_MAX - PRIO_MIN;	1337	int prio;
935		1338
936	min_prio -= PRIO_MIN;
937	if (min_prio < 0)
938	min_prio = 0;
939
940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1339	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
941	if (AvFILLp (coro_ready [prio]) >= 0)	1340	if (AvFILLp (coro_ready [prio]) >= 0)
942	{
943	coro_nready--;
944	return av_shift (coro_ready [prio]);	1341	return av_shift (coro_ready [prio]);
945	}
946		1342
947	return 0;	1343	return 0;
948	}	1344	}
949		1345
950	static int	1346	static int
951	api_ready (SV *coro_sv)	1347	api_ready (SV *coro_sv)
952	{	1348	{
		1349	dTHX;
953	struct coro *coro;	1350	struct coro *coro;
954		1351
955	if (SvROK (coro_sv))	1352	if (SvROK (coro_sv))
956	coro_sv = SvRV (coro_sv);	1353	coro_sv = SvRV (coro_sv);
957		1354
958	coro = SvSTATE (coro_sv);	1355	coro = SvSTATE (coro_sv);
959		1356
960	if (coro->flags & CF_READY)	1357	if (coro->flags & CF_READY)
961	return 0;	1358	return 0;
962		1359
963	#if 0 /* this is actually harmless */
964	if (coro->flags & CF_RUNNING)
965	croak ("Coro::ready called on currently running coroutine");
966	#endif
967
968	coro->flags \|= CF_READY;	1360	coro->flags \|= CF_READY;
969		1361
970	LOCK;	1362	LOCK;
971	coro_enq (SvREFCNT_inc (coro_sv));	1363	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1364	++coro_nready;
972	UNLOCK;	1365	UNLOCK;
973		1366
974	return 1;	1367	return 1;
975	}	1368	}
976		1369
977	static int	1370	static int
978	api_is_ready (SV *coro_sv)	1371	api_is_ready (SV *coro_sv)
979	{	1372	{
		1373	dTHX;
980	return !!SvSTATE (coro_sv)->flags & CF_READY;	1374	return !!(SvSTATE (coro_sv)->flags & CF_READY);
981	}	1375	}
982		1376
983	static void	1377	static void
984	prepare_schedule (struct transfer_args *ta)	1378	prepare_schedule (pTHX_ struct transfer_args *ta)
985	{	1379	{
986	SV prev, next;	1380	SV prev_sv, next_sv;
987		1381
988	for (;;)	1382	for (;;)
989	{	1383	{
990	LOCK;	1384	LOCK;
991	next = coro_deq (PRIO_MIN);	1385	next_sv = coro_deq (aTHX);
		1386
		1387	/* nothing to schedule: call the idle handler */
		1388	if (expect_false (!next_sv))
		1389	{
		1390	dSP;
		1391	UNLOCK;
		1392
		1393	ENTER;
		1394	SAVETMPS;
		1395
		1396	PUSHMARK (SP);
		1397	PUTBACK;
		1398	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1399
		1400	FREETMPS;
		1401	LEAVE;
		1402	continue;
		1403	}
		1404
		1405	ta->next = SvSTATE (next_sv);
		1406
		1407	/* cannot transfer to destroyed coros, skip and look for next */
		1408	if (expect_false (ta->next->flags & CF_DESTROYED))
		1409	{
		1410	UNLOCK;
		1411	SvREFCNT_dec (next_sv);
		1412	/* coro_nready is already taken care of by destroy */
		1413	continue;
		1414	}
		1415
		1416	--coro_nready;
992	UNLOCK;	1417	UNLOCK;
993
994	if (next)
995	break;	1418	break;
996
997	{
998	dSP;
999
1000	ENTER;
1001	SAVETMPS;
1002
1003	PUSHMARK (SP);
1004	PUTBACK;
1005	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1006
1007	FREETMPS;
1008	LEAVE;
1009	}	1419	}
1010	}
1011
1012	prev = SvRV (coro_current);
1013	SvRV_set (coro_current, next);
1014		1420
1015	/* free this only after the transfer */	1421	/* free this only after the transfer */
1016	LOCK;	1422	prev_sv = SvRV (coro_current);
1017	free_coro_mortal ();
1018	UNLOCK;
1019	coro_mortal = prev;
1020
1021	assert (!SvROK(prev));//D
1022	assert (!SvROK(next));//D
1023
1024	ta->prev = SvSTATE (prev);	1423	ta->prev = SvSTATE (prev_sv);
1025	ta->next = SvSTATE (next);	1424	TRANSFER_CHECK (*ta);
1026
1027	assert (ta->next->flags & CF_READY);	1425	assert (ta->next->flags & CF_READY);
1028	ta->next->flags &= ~CF_READY;	1426	ta->next->flags &= ~CF_READY;
1029	}	1427	SvRV_set (coro_current, next_sv);
1030		1428
		1429	LOCK;
		1430	free_coro_mortal (aTHX);
		1431	coro_mortal = prev_sv;
		1432	UNLOCK;
		1433	}
		1434
1031	static void	1435	static void
1032	prepare_cede (struct transfer_args *ta)	1436	prepare_cede (pTHX_ struct transfer_args *ta)
1033	{	1437	{
1034	api_ready (coro_current);	1438	api_ready (coro_current);
1035
1036	prepare_schedule (ta);	1439	prepare_schedule (aTHX_ ta);
		1440	}
		1441
		1442	static int
		1443	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1444	{
		1445	if (coro_nready)
		1446	{
		1447	SV *prev = SvRV (coro_current);
		1448	prepare_schedule (aTHX_ ta);
		1449	api_ready (prev);
		1450	return 1;
		1451	}
		1452	else
		1453	return 0;
1037	}	1454	}
1038		1455
1039	static void	1456	static void
1040	api_schedule (void)	1457	api_schedule (void)
1041	{	1458	{
		1459	dTHX;
1042	struct transfer_args ta;	1460	struct transfer_args ta;
1043		1461
1044	prepare_schedule (&ta);	1462	prepare_schedule (aTHX_ &ta);
1045	TRANSFER (ta);	1463	TRANSFER (ta);
1046	}	1464	}
1047		1465
1048	static void	1466	static int
1049	api_cede (void)	1467	api_cede (void)
1050	{	1468	{
		1469	dTHX;
1051	struct transfer_args ta;	1470	struct transfer_args ta;
1052		1471
1053	prepare_cede (&ta);	1472	prepare_cede (aTHX_ &ta);
		1473
		1474	if (expect_true (ta.prev != ta.next))
		1475	{
1054	TRANSFER (ta);	1476	TRANSFER (ta);
		1477	return 1;
		1478	}
		1479	else
		1480	return 0;
1055	}	1481	}
1056		1482
		1483	static int
		1484	api_cede_notself (void)
		1485	{
		1486	dTHX;
		1487	struct transfer_args ta;
		1488
		1489	if (prepare_cede_notself (aTHX_ &ta))
		1490	{
		1491	TRANSFER (ta);
		1492	return 1;
		1493	}
		1494	else
		1495	return 0;
		1496	}
		1497
		1498	static void
		1499	api_trace (SV *coro_sv, int flags)
		1500	{
		1501	dTHX;
		1502	struct coro *coro = SvSTATE (coro_sv);
		1503
		1504	if (flags & CC_TRACE)
		1505	{
		1506	if (!coro->cctx)
		1507	coro->cctx = cctx_new ();
		1508	else if (!(coro->cctx->flags & CC_TRACE))
		1509	croak ("cannot enable tracing on coroutine with custom stack");
		1510
		1511	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1512	}
		1513	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1514	{
		1515	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1516
		1517	if (coro->flags & CF_RUNNING)
		1518	PL_runops = RUNOPS_DEFAULT;
		1519	else
		1520	coro->slot->runops = RUNOPS_DEFAULT;
		1521	}
		1522	}
		1523
1057	MODULE = Coro::State PACKAGE = Coro::State	1524	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1058		1525
1059	PROTOTYPES: DISABLE	1526	PROTOTYPES: DISABLE
1060		1527
1061	BOOT:	1528	BOOT:
1062	{	1529	{
1063	#ifdef USE_ITHREADS	1530	#ifdef USE_ITHREADS
1064	MUTEX_INIT (&coro_mutex);	1531	MUTEX_INIT (&coro_mutex);
1065	#endif	1532	#endif
1066	BOOT_PAGESIZE;	1533	BOOT_PAGESIZE;
1067		1534
		1535	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1536	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1537	#if 0
		1538	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1539	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1540	#endif
		1541	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1542	rv_diehook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1543	rv_warnhook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1544
1068	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1545	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1069		1546
		1547	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1548	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1070	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1549	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1071	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1072	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1073	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1074	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1550	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1075		1551
1076	main_mainstack = PL_mainstack;	1552	main_mainstack = PL_mainstack;
		1553	main_top_env = PL_top_env;
		1554
		1555	while (main_top_env->je_prev)
		1556	main_top_env = main_top_env->je_prev;
1077		1557
1078	coroapi.ver = CORO_API_VERSION;	1558	coroapi.ver = CORO_API_VERSION;
		1559	coroapi.rev = CORO_API_REVISION;
1079	coroapi.transfer = api_transfer;	1560	coroapi.transfer = api_transfer;
1080		1561
1081	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1562	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1082	}	1563	}
1083		1564
1084	SV *	1565	SV *
1085	new (char *klass, ...)	1566	new (char *klass, ...)
1086	CODE:	1567	CODE:
1087	{	1568	{
1088	struct coro *coro;	1569	struct coro *coro;
		1570	MAGIC *mg;
1089	HV *hv;	1571	HV *hv;
1090	int i;	1572	int i;
1091		1573
1092	Newz (0, coro, 1, struct coro);	1574	Newz (0, coro, 1, struct coro);
1093	coro->args = newAV ();	1575	coro->args = newAV ();
1094	coro->save = CORO_SAVE_ALL;
1095	coro->flags = CF_NEW;	1576	coro->flags = CF_NEW;
1096		1577
		1578	if (coro_first) coro_first->prev = coro;
		1579	coro->next = coro_first;
		1580	coro_first = coro;
		1581
1097	hv = newHV ();	1582	coro->hv = hv = newHV ();
1098	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1583	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1584	mg->mg_flags \|= MGf_DUP;
1099	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1585	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1100		1586
		1587	av_extend (coro->args, items - 1);
1101	for (i = 1; i < items; i++)	1588	for (i = 1; i < items; i++)
1102	av_push (coro->args, newSVsv (ST (i)));	1589	av_push (coro->args, newSVsv (ST (i)));
1103	}	1590	}
1104	OUTPUT:	1591	OUTPUT:
1105	RETVAL	1592	RETVAL
1106		1593
1107	int	1594	# these not obviously related functions are all rolled into the same xs
1108	save (SV *coro, int new_save = -1)	1595	# function to increase chances that they all will call transfer with the same
1109	CODE:	1596	# stack offset
1110	RETVAL = api_save (coro, new_save);
1111	OUTPUT:
1112	RETVAL
1113
1114	void	1597	void
1115	_set_stacklevel (...)	1598	_set_stacklevel (...)
1116	ALIAS:	1599	ALIAS:
1117	Coro::State::transfer = 1	1600	Coro::State::transfer = 1
1118	Coro::schedule = 2	1601	Coro::schedule = 2
1119	Coro::cede = 3	1602	Coro::cede = 3
		1603	Coro::cede_notself = 4
1120	CODE:	1604	CODE:
1121	{	1605	{
1122	struct transfer_args ta;	1606	struct transfer_args ta;
1123		1607
1124	switch (ix)	1608	switch (ix)
…		…
1130		1614
1131	case 1:	1615	case 1:
1132	if (items != 2)	1616	if (items != 2)
1133	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1617	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1134		1618
1135	prepare_transfer (&ta, ST (0), ST (1));	1619	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1136	break;	1620	break;
1137		1621
1138	case 2:	1622	case 2:
1139	prepare_schedule (&ta);	1623	prepare_schedule (aTHX_ &ta);
1140	break;	1624	break;
1141		1625
1142	case 3:	1626	case 3:
1143	prepare_cede (&ta);	1627	prepare_cede (aTHX_ &ta);
		1628	break;
		1629
		1630	case 4:
		1631	if (!prepare_cede_notself (aTHX_ &ta))
		1632	XSRETURN_EMPTY;
		1633
1144	break;	1634	break;
1145	}	1635	}
1146		1636
		1637	BARRIER;
		1638	PUTBACK;
1147	TRANSFER (ta);	1639	TRANSFER (ta);
		1640	SPAGAIN; /* might be the sp of a different coroutine now */
		1641	/* be extra careful not to ever do anything after TRANSFER */
1148	}	1642	}
1149		1643
1150	void	1644	bool
1151	_clone_state_from (SV dst, SV src)	1645	_destroy (SV *coro_sv)
1152	CODE:	1646	CODE:
1153	{	1647	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1154	struct coro *coro_src = SvSTATE (src);	1648	OUTPUT:
1155		1649	RETVAL
1156	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1157
1158	++coro_src->refcnt;
1159	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1160	}
1161		1650
1162	void	1651	void
1163	_exit (code)	1652	_exit (code)
1164	int code	1653	int code
1165	PROTOTYPE: $	1654	PROTOTYPE: $
1166	CODE:	1655	CODE:
1167	_exit (code);	1656	_exit (code);
1168		1657
1169	int	1658	int
		1659	cctx_stacksize (int new_stacksize = 0)
		1660	CODE:
		1661	RETVAL = coro_stacksize;
		1662	if (new_stacksize)
		1663	coro_stacksize = new_stacksize;
		1664	OUTPUT:
		1665	RETVAL
		1666
		1667	int
1170	cctx_count ()	1668	cctx_count ()
1171	CODE:	1669	CODE:
1172	RETVAL = cctx_count;	1670	RETVAL = cctx_count;
1173	OUTPUT:	1671	OUTPUT:
1174	RETVAL	1672	RETVAL
…		…
1178	CODE:	1676	CODE:
1179	RETVAL = cctx_idle;	1677	RETVAL = cctx_idle;
1180	OUTPUT:	1678	OUTPUT:
1181	RETVAL	1679	RETVAL
1182		1680
		1681	void
		1682	list ()
		1683	PPCODE:
		1684	{
		1685	struct coro *coro;
		1686	for (coro = coro_first; coro; coro = coro->next)
		1687	if (coro->hv)
		1688	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1689	}
		1690
		1691	void
		1692	call (Coro::State coro, SV *coderef)
		1693	ALIAS:
		1694	eval = 1
		1695	CODE:
		1696	{
		1697	if (coro->mainstack)
		1698	{
		1699	struct coro temp;
		1700
		1701	if (!(coro->flags & CF_RUNNING))
		1702	{
		1703	save_perl (aTHX_ &temp);
		1704	load_perl (aTHX_ coro);
		1705	}
		1706
		1707	{
		1708	dSP;
		1709	ENTER;
		1710	SAVETMPS;
		1711	PUTBACK;
		1712	PUSHSTACK;
		1713	PUSHMARK (SP);
		1714
		1715	if (ix)
		1716	eval_sv (coderef, 0);
		1717	else
		1718	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1719
		1720	POPSTACK;
		1721	SPAGAIN;
		1722	FREETMPS;
		1723	LEAVE;
		1724	PUTBACK;
		1725	}
		1726
		1727	if (!(coro->flags & CF_RUNNING))
		1728	{
		1729	save_perl (aTHX_ coro);
		1730	load_perl (aTHX_ &temp);
		1731	}
		1732	}
		1733	}
		1734
		1735	SV *
		1736	is_ready (Coro::State coro)
		1737	PROTOTYPE: $
		1738	ALIAS:
		1739	is_ready = CF_READY
		1740	is_running = CF_RUNNING
		1741	is_new = CF_NEW
		1742	is_destroyed = CF_DESTROYED
		1743	CODE:
		1744	RETVAL = boolSV (coro->flags & ix);
		1745	OUTPUT:
		1746	RETVAL
		1747
		1748	void
		1749	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1750
		1751	SV *
		1752	has_stack (Coro::State coro)
		1753	PROTOTYPE: $
		1754	CODE:
		1755	RETVAL = boolSV (!!coro->cctx);
		1756	OUTPUT:
		1757	RETVAL
		1758
		1759	int
		1760	is_traced (Coro::State coro)
		1761	PROTOTYPE: $
		1762	CODE:
		1763	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1764	OUTPUT:
		1765	RETVAL
		1766
		1767	IV
		1768	rss (Coro::State coro)
		1769	PROTOTYPE: $
		1770	ALIAS:
		1771	usecount = 1
		1772	CODE:
		1773	switch (ix)
		1774	{
		1775	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1776	case 1: RETVAL = coro->usecount; break;
		1777	}
		1778	OUTPUT:
		1779	RETVAL
		1780
		1781
1183	MODULE = Coro::State PACKAGE = Coro	1782	MODULE = Coro::State PACKAGE = Coro
1184		1783
1185	BOOT:	1784	BOOT:
1186	{	1785	{
1187	int i;	1786	int i;
1188		1787
		1788	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1789	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1790	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1791
		1792	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1793	SvREADONLY_on (coro_current);
		1794
1189	coro_stash = gv_stashpv ("Coro", TRUE);	1795	coro_stash = gv_stashpv ("Coro", TRUE);
1190		1796
1191	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1797	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1192	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1798	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1193	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1799	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1194	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1800	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1195	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1801	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1196	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1802	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1197		1803
1198	coro_current = get_sv ("Coro::current", FALSE);
1199	SvREADONLY_on (coro_current);
1200
1201	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1804	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1202	coro_ready[i] = newAV ();	1805	coro_ready[i] = newAV ();
1203		1806
1204	{	1807	{
1205	SV *sv = perl_get_sv("Coro::API", 1);	1808	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1809	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1206		1810
1207	coroapi.schedule = api_schedule;	1811	coroapi.schedule = api_schedule;
1208	coroapi.save = api_save;
1209	coroapi.cede = api_cede;	1812	coroapi.cede = api_cede;
		1813	coroapi.cede_notself = api_cede_notself;
1210	coroapi.ready = api_ready;	1814	coroapi.ready = api_ready;
1211	coroapi.is_ready = api_is_ready;	1815	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1816	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1817	coroapi.current = coro_current;
1214		1818
1215	GCoroAPI = &coroapi;	1819	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1820	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1821	SvREADONLY_on (sv);
1218	}	1822	}
…		…
1234	RETVAL = coro->prio;	1838	RETVAL = coro->prio;
1235		1839
1236	if (items > 1)	1840	if (items > 1)
1237	{	1841	{
1238	if (ix)	1842	if (ix)
1239	newprio += coro->prio;	1843	newprio = coro->prio - newprio;
1240		1844
1241	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1845	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1242	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1846	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1243		1847
1244	coro->prio = newprio;	1848	coro->prio = newprio;
1245	}	1849	}
1246	}	1850	}
		1851	OUTPUT:
		1852	RETVAL
1247		1853
1248	SV *	1854	SV *
1249	ready (SV *self)	1855	ready (SV *self)
1250	PROTOTYPE: $	1856	PROTOTYPE: $
1251	CODE:	1857	CODE:
1252	RETVAL = boolSV (api_ready (self));	1858	RETVAL = boolSV (api_ready (self));
1253	OUTPUT:	1859	OUTPUT:
1254	RETVAL	1860	RETVAL
1255		1861
1256	SV *
1257	is_ready (SV *self)
1258	PROTOTYPE: $
1259	CODE:
1260	RETVAL = boolSV (api_is_ready (self));
1261	OUTPUT:
1262	RETVAL
1263
1264	int	1862	int
1265	nready (...)	1863	nready (...)
1266	PROTOTYPE:	1864	PROTOTYPE:
1267	CODE:	1865	CODE:
1268	RETVAL = coro_nready;	1866	RETVAL = coro_nready;
1269	OUTPUT:	1867	OUTPUT:
1270	RETVAL	1868	RETVAL
1271		1869
		1870	void
		1871	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1872	PROTOTYPE: $;$
		1873	CODE:
		1874	SvREFCNT_dec (self->throw);
		1875	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1876
		1877	# for async_pool speedup
		1878	void
		1879	_pool_1 (SV *cb)
		1880	CODE:
		1881	{
		1882	struct coro *coro = SvSTATE (coro_current);
		1883	HV hv = (HV )SvRV (coro_current);
		1884	AV *defav = GvAV (PL_defgv);
		1885	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1886	AV *invoke_av;
		1887	int i, len;
		1888
		1889	if (!invoke)
		1890	croak ("\3async_pool terminate\2\n");
		1891
		1892	SvREFCNT_dec (coro->saved_deffh);
		1893	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1894
		1895	hv_store (hv, "desc", sizeof ("desc") - 1,
		1896	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1897
		1898	invoke_av = (AV *)SvRV (invoke);
		1899	len = av_len (invoke_av);
		1900
		1901	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1902
		1903	if (len > 0)
		1904	{
		1905	av_fill (defav, len - 1);
		1906	for (i = 0; i < len; ++i)
		1907	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1908	}
		1909
		1910	SvREFCNT_dec (invoke);
		1911	}
		1912
		1913	void
		1914	_pool_2 (SV *cb)
		1915	CODE:
		1916	{
		1917	struct coro *coro = SvSTATE (coro_current);
		1918
		1919	sv_setsv (cb, &PL_sv_undef);
		1920
		1921	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1922	coro->saved_deffh = 0;
		1923
		1924	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1925	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1926	croak ("\3async_pool terminate\2\n");
		1927
		1928	av_clear (GvAV (PL_defgv));
		1929	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1930	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1931
		1932	coro->prio = 0;
		1933
		1934	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1935	api_trace (coro_current, 0);
		1936
		1937	av_push (av_async_pool, newSVsv (coro_current));
		1938	}
		1939
		1940
1272	MODULE = Coro::State PACKAGE = Coro::AIO	1941	MODULE = Coro::State PACKAGE = Coro::AIO
1273		1942
1274	SV *	1943	SV *
1275	_get_state ()	1944	_get_state ()
1276	CODE:	1945	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs. Revision 1.218 by root, Mon Dec 3 00:41:45 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.218 by root, Mon Dec 3 00:41:45 2007 UTC