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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC vs.
Revision 1.216 by root, Wed Nov 14 10:24:14 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		14	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	15	#include <inttypes.h> /* portable stdint.h */
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		16
54	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
55	# include <unistd.h>	18	# include <unistd.h>
56	# include <sys/mman.h>	19	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
72	#else	35	#else
73	# define PAGESIZE 0	36	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	37	# define BOOT_PAGESIZE (void)0
75	#endif	38	#endif
76		39
77	/* The next macro should declare a variable stacklevel that contains and approximation	40	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	41	# include <valgrind/valgrind.h>
79	* 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. */
80	#define dSTACKLEVEL int stacklevel	105	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	106	#define STACKLEVEL ((void *)&stacklevel)
82		107
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		109
85	#if __GNUC__ >= 3	110	#if __GNUC__ >= 3
86	# 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))
87	#else	114	#else
88	# define attribute(x)	115	# define attribute(x)
		116	# define BARRIER
		117	# define expect(expr,value) (expr)
89	#endif	118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
90		122
91	#define NOINLINE attribute ((noinline))	123	#define NOINLINE attribute ((noinline))
92		124
93	#include "CoroAPI.h"	125	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		126
97	#ifdef USE_ITHREADS	127	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	128	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	129	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	130	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	131	#else
102	# define LOCK (void)0	132	# define LOCK (void)0
103	# define UNLOCK (void)0	133	# define UNLOCK (void)0
104	#endif	134	#endif
105		135
		136	/* helper storage struct for Coro::AIO */
		137	struct io_state
		138	{
		139	int errorno;
		140	I32 laststype;
		141	int laststatval;
		142	Stat_t statcache;
		143	};
		144
		145	static size_t coro_stacksize = CORO_STACKSIZE;
106	static struct CoroAPI coroapi;	146	static struct CoroAPI coroapi;
107	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;
108	static HV coro_state_stash, coro_stash;	149	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	150	static SV coro_mortal; / will be freed after next transfer */
110		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
111	static struct coro_cctx *cctx_first;	163	static struct coro_cctx *cctx_first;
112	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	};
113		174
114	/* this is a structure representing a c-level coroutine */	175	/* this is a structure representing a c-level coroutine */
115	typedef struct coro_cctx {	176	typedef struct coro_cctx {
116	struct coro_cctx *next;	177	struct coro_cctx *next;
117		178
118	/* the stack */	179	/* the stack */
119	void *sptr;	180	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	181	size_t ssize;
121		182
122	/* cpu state */	183	/* cpu state */
123	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 */
124	JMPENV *top_env;	186	JMPENV *top_env;
125	coro_context cctx;	187	coro_context cctx;
126		188
127	int inuse;
128
129	#if USE_VALGRIND	189	#if CORO_USE_VALGRIND
130	int valgrind_id;	190	int valgrind_id;
131	#endif	191	#endif
		192	unsigned char flags;
132	} coro_cctx;	193	} coro_cctx;
133		194
134	enum {	195	enum {
135	CF_RUNNING, /* coroutine is running */	196	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY, /* coroutine is ready */	197	CF_READY = 0x0002, /* coroutine is ready */
		198	CF_NEW = 0x0004, /* has never been switched to */
		199	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
137	};	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))
138		214
139	/* this is a structure representing a perl-level coroutine */	215	/* this is a structure representing a perl-level coroutine */
140	struct coro {	216	struct coro {
141	/* the c coroutine allocated to this perl coroutine, if any */	217	/* the c coroutine allocated to this perl coroutine, if any */
142	coro_cctx *cctx;	218	coro_cctx *cctx;
143		219
		220	/* process data */
		221	AV *mainstack;
		222	perl_slots slot; / basically the saved sp */
		223
144	/* data associated with this coroutine (initial args) */	224	AV args; / data associated with this coroutine (initial args) */
145	AV *args;	225	int refcnt; /* coroutines are refcounted, yes */
146	int refcnt;	226	int flags; /* CF_ flags */
147	int flags;	227	HV hv; / the perl hash associated with this coro, if any */
148		228
149	/* optionally saved, might be zero */	229	/* statistics */
150	AV *defav;	230	int usecount; /* number of transfers to this coro */
151	SV *defsv;
152	SV *errsv;
153
154	#define VAR(name,type) type name;
155	# include "state.h"
156	#undef VAR
157		231
158	/* coro process data */	232	/* coro process data */
159	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;
160	};	241	};
161		242
162	typedef struct coro *Coro__State;	243	typedef struct coro *Coro__State;
163	typedef struct coro *Coro__State_or_hashref;	244	typedef struct coro *Coro__State_or_hashref;
164		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
165	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 *
166	coro_clone_padlist (CV *cv)	294	coro_clone_padlist (pTHX_ CV *cv)
167	{	295	{
168	AV *padlist = CvPADLIST (cv);	296	AV *padlist = CvPADLIST (cv);
169	AV newpadlist, newpad;	297	AV newpadlist, newpad;
170		298
171	newpadlist = newAV ();	299	newpadlist = newAV ();
…		…
183		311
184	return newpadlist;	312	return newpadlist;
185	}	313	}
186		314
187	static void	315	static void
188	free_padlist (AV *padlist)	316	free_padlist (pTHX_ AV *padlist)
189	{	317	{
190	/* may be during global destruction */	318	/* may be during global destruction */
191	if (SvREFCNT (padlist))	319	if (SvREFCNT (padlist))
192	{	320	{
193	I32 i = AvFILLp (padlist);	321	I32 i = AvFILLp (padlist);
…		…
214	AV *padlist;	342	AV *padlist;
215	AV av = (AV )mg->mg_obj;	343	AV av = (AV )mg->mg_obj;
216		344
217	/* casting is fun. */	345	/* casting is fun. */
218	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	346	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
219	free_padlist (padlist);	347	free_padlist (aTHX_ padlist);
220
221	SvREFCNT_dec (av);
222		348
223	return 0;	349	return 0;
224	}	350	}
225		351
226	#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
227		354
228	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	};
229		359
230	#define CORO_MAGIC(cv) \	360	#define CORO_MAGIC(sv,type) \
231	SvMAGIC (cv) \	361	SvMAGIC (sv) \
232	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (sv)->mg_type == type \
233	? SvMAGIC (cv) \	363	? SvMAGIC (sv) \
234	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find (sv, type) \
235	: 0	365	: 0
236		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
237	/* the next two functions merely cache the padlists */	396	/* the next two functions merely cache the padlists */
238	static void	397	static void
239	get_padlist (CV *cv)	398	get_padlist (pTHX_ CV *cv)
240	{	399	{
241	MAGIC *mg = CORO_MAGIC (cv);	400	MAGIC *mg = CORO_MAGIC_cv (cv);
242	AV *av;	401	AV *av;
243		402
244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	403	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	404	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
246	else	405	else
247	{	406	{
248	#if 0	407	#if CORO_PREFER_PERL_FUNCTIONS
249	/* this is probably cleaner, but also slower? */	408	/* this is probably cleaner, but also slower? */
250	CV *cp = Perl_cv_clone (cv);	409	CV *cp = Perl_cv_clone (cv);
251	CvPADLIST (cv) = CvPADLIST (cp);	410	CvPADLIST (cv) = CvPADLIST (cp);
252	CvPADLIST (cp) = 0;	411	CvPADLIST (cp) = 0;
253	SvREFCNT_dec (cp);	412	SvREFCNT_dec (cp);
254	#else	413	#else
255	CvPADLIST (cv) = coro_clone_padlist (cv);	414	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
256	#endif	415	#endif
257	}	416	}
258	}	417	}
259		418
260	static void	419	static void
261	put_padlist (CV *cv)	420	put_padlist (pTHX_ CV *cv)
262	{	421	{
263	MAGIC *mg = CORO_MAGIC (cv);	422	MAGIC *mg = CORO_MAGIC_cv (cv);
264	AV *av;	423	AV *av;
265		424
266	if (!mg)	425	if (expect_false (!mg))
267	{	426	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
268	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
269	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
270	mg->mg_virtual = &vtbl_coro;
271	mg->mg_obj = (SV *)newAV ();
272	}
273		427
274	av = (AV *)mg->mg_obj;	428	av = (AV *)mg->mg_obj;
275		429
276	if (AvFILLp (av) >= AvMAX (av))	430	if (expect_false (AvFILLp (av) >= AvMAX (av)))
277	av_extend (av, AvMAX (av) + 1);	431	av_extend (av, AvMAX (av) + 1);
278		432
279	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	433	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
280	}	434	}
281		435
282	#define SB do {	436	/ load & save, init *****************************************************/
283	#define SE } while (0)
284		437
285	#define LOAD(state) load_state((state));
286	#define SAVE(state,flags) save_state((state),(flags));
287
288	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
289
290	static void	438	static void
291	load_state(Coro__State c)	439	load_perl (pTHX_ Coro__State c)
292	{	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
293	#define VAR(name,type) PL_ ## name = c->name;	451	#define VAR(name,type) PL_ ## name = slot->name;
294	# include "state.h"	452	# include "state.h"
295	#undef VAR	453	#undef VAR
296
297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
299	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
300		454
301	{	455	{
302	dSP;	456	dSP;
		457
303	CV *cv;	458	CV *cv;
304		459
305	/* now do the ugly restore mess */	460	/* now do the ugly restore mess */
306	while ((cv = (CV *)POPs))	461	while (expect_true (cv = (CV *)POPs))
307	{	462	{
308	put_padlist (cv); /* mark this padlist as available */	463	put_padlist (aTHX_ cv); /* mark this padlist as available */
309	CvDEPTH (cv) = PTR2IV (POPs);	464	CvDEPTH (cv) = PTR2IV (POPs);
310	CvPADLIST (cv) = (AV *)POPs;	465	CvPADLIST (cv) = (AV *)POPs;
311	}	466	}
312		467
313	PUTBACK;	468	PUTBACK;
314	}	469	}
315	}	470	}
316		471
317	static void	472	static void
318	save_state(Coro__State c, int flags)	473	save_perl (pTHX_ Coro__State c)
319	{	474	{
320	{	475	{
321	dSP;	476	dSP;
322	I32 cxix = cxstack_ix;	477	I32 cxix = cxstack_ix;
323	PERL_CONTEXT *ccstk = cxstack;	478	PERL_CONTEXT *ccstk = cxstack;
…		…
326	/*	481	/*
327	* 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
328	* (and reinitialize) all cv's in the whole callchain :(	483	* (and reinitialize) all cv's in the whole callchain :(
329	*/	484	*/
330		485
331	PUSHs (Nullsv);	486	XPUSHs (Nullsv);
332	/* this loop was inspired by pp_caller */	487	/* this loop was inspired by pp_caller */
333	for (;;)	488	for (;;)
334	{	489	{
335	while (cxix >= 0)	490	while (expect_true (cxix >= 0))
336	{	491	{
337	PERL_CONTEXT *cx = &ccstk[cxix--];	492	PERL_CONTEXT *cx = &ccstk[cxix--];
338		493
339	if (CxTYPE(cx) == CXt_SUB)	494	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
340	{	495	{
341	CV *cv = cx->blk_sub.cv;	496	CV *cv = cx->blk_sub.cv;
342		497
343	if (CvDEPTH (cv))	498	if (expect_true (CvDEPTH (cv)))
344	{	499	{
345	EXTEND (SP, 3);	500	EXTEND (SP, 3);
346
347	PUSHs ((SV *)CvPADLIST(cv));	501	PUSHs ((SV *)CvPADLIST (cv));
348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	502	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
349	PUSHs ((SV *)cv);	503	PUSHs ((SV *)cv);
350		504
351	CvDEPTH (cv) = 0;	505	CvDEPTH (cv) = 0;
352	get_padlist (cv);	506	get_padlist (aTHX_ cv);
353	}	507	}
354	}	508	}
355	#ifdef CXt_FORMAT
356	else if (CxTYPE(cx) == CXt_FORMAT)
357	{
358	/* I never used formats, so how should I know how these are implemented? */
359	/* my bold guess is as a simple, plain sub... */
360	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
361	}
362	#endif
363	}	509	}
364		510
365	if (top_si->si_type == PERLSI_MAIN)	511	if (expect_true (top_si->si_type == PERLSI_MAIN))
366	break;	512	break;
367		513
368	top_si = top_si->si_prev;	514	top_si = top_si->si_prev;
369	ccstk = top_si->si_cxstack;	515	ccstk = top_si->si_cxstack;
370	cxix = top_si->si_cxix;	516	cxix = top_si->si_cxix;
371	}	517	}
372		518
373	PUTBACK;	519	PUTBACK;
374	}	520	}
375		521
376	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	522	/* allocate some space on the context stack for our purposes */
377	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	523	/* we manually unroll here, as usually 2 slots is enough */
378	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	524	if (SLOT_COUNT >= 1) CXINC;
		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 */
379		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
380	#define VAR(name,type)c->name = PL_ ## name;	544	#define VAR(name,type) slot->name = PL_ ## name;
381	# include "state.h"	545	# include "state.h"
382	#undef VAR	546	#undef VAR
		547	}
383	}	548	}
384		549
385	/*	550	/*
386	* allocate various perl stacks. This is an exact copy	551	* allocate various perl stacks. This is an exact copy
387	* of perl.c:init_stacks, except that it uses less memory	552	* of perl.c:init_stacks, except that it uses less memory
388	* on the (sometimes correct) assumption that coroutines do	553	* on the (sometimes correct) assumption that coroutines do
389	* not usually need a lot of stackspace.	554	* not usually need a lot of stackspace.
390	*/	555	*/
		556	#if CORO_PREFER_PERL_FUNCTIONS
		557	# define coro_init_stacks init_stacks
		558	#else
391	static void	559	static void
392	coro_init_stacks ()	560	coro_init_stacks (pTHX)
393	{	561	{
394	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	562	PL_curstackinfo = new_stackinfo(32, 8);
395	PL_curstackinfo->si_type = PERLSI_MAIN;	563	PL_curstackinfo->si_type = PERLSI_MAIN;
396	PL_curstack = PL_curstackinfo->si_stack;	564	PL_curstack = PL_curstackinfo->si_stack;
397	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	565	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
398		566
399	PL_stack_base = AvARRAY(PL_curstack);	567	PL_stack_base = AvARRAY(PL_curstack);
400	PL_stack_sp = PL_stack_base;	568	PL_stack_sp = PL_stack_base;
401	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	569	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
402		570
403	New(50,PL_tmps_stack,128,SV*);	571	New(50,PL_tmps_stack,32,SV*);
404	PL_tmps_floor = -1;	572	PL_tmps_floor = -1;
405	PL_tmps_ix = -1;	573	PL_tmps_ix = -1;
406	PL_tmps_max = 128;	574	PL_tmps_max = 32;
407		575
408	New(54,PL_markstack,32,I32);	576	New(54,PL_markstack,16,I32);
409	PL_markstack_ptr = PL_markstack;	577	PL_markstack_ptr = PL_markstack;
410	PL_markstack_max = PL_markstack + 32;	578	PL_markstack_max = PL_markstack + 16;
411		579
412	#ifdef SET_MARK_OFFSET	580	#ifdef SET_MARK_OFFSET
413	SET_MARK_OFFSET;	581	SET_MARK_OFFSET;
414	#endif	582	#endif
415		583
416	New(54,PL_scopestack,32,I32);	584	New(54,PL_scopestack,8,I32);
417	PL_scopestack_ix = 0;	585	PL_scopestack_ix = 0;
418	PL_scopestack_max = 32;	586	PL_scopestack_max = 8;
419		587
420	New(54,PL_savestack,64,ANY);	588	New(54,PL_savestack,24,ANY);
421	PL_savestack_ix = 0;	589	PL_savestack_ix = 0;
422	PL_savestack_max = 64;	590	PL_savestack_max = 24;
423		591
424	#if !PERL_VERSION_ATLEAST (5,9,0)	592	#if !PERL_VERSION_ATLEAST (5,9,0)
425	New(54,PL_retstack,16,OP*);	593	New(54,PL_retstack,4,OP*);
426	PL_retstack_ix = 0;	594	PL_retstack_ix = 0;
427	PL_retstack_max = 16;	595	PL_retstack_max = 4;
428	#endif	596	#endif
429	}	597	}
		598	#endif
430		599
431	/*	600	/*
432	* destroy the stacks, the callchain etc...	601	* destroy the stacks, the callchain etc...
433	*/	602	*/
434	static void	603	static void
435	coro_destroy_stacks ()	604	coro_destroy_stacks (pTHX)
436	{	605	{
437	if (!IN_DESTRUCT)
438	{
439	/* is this ugly, I ask? */
440	LEAVE_SCOPE (0);
441
442	/* sure it is, but more important: is it correct?? :/ */
443	FREETMPS;
444
445	/POPSTACK_TO (PL_mainstack);//D//use/
446	}
447
448	while (PL_curstackinfo->si_next)	606	while (PL_curstackinfo->si_next)
449	PL_curstackinfo = PL_curstackinfo->si_next;	607	PL_curstackinfo = PL_curstackinfo->si_next;
450		608
451	while (PL_curstackinfo)	609	while (PL_curstackinfo)
452	{	610	{
453	PERL_SI *p = PL_curstackinfo->si_prev;	611	PERL_SI *p = PL_curstackinfo->si_prev;
454		612
455	{ /D//remove/
456	dSP;
457	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
458	PUTBACK; /* possibly superfluous */
459	}
460
461	if (!IN_DESTRUCT)	613	if (!IN_DESTRUCT)
462	{
463	dounwind (-1);/D//remove/
464	SvREFCNT_dec (PL_curstackinfo->si_stack);	614	SvREFCNT_dec (PL_curstackinfo->si_stack);
465	}
466		615
467	Safefree (PL_curstackinfo->si_cxstack);	616	Safefree (PL_curstackinfo->si_cxstack);
468	Safefree (PL_curstackinfo);	617	Safefree (PL_curstackinfo);
469	PL_curstackinfo = p;	618	PL_curstackinfo = p;
470	}	619	}
…		…
476	#if !PERL_VERSION_ATLEAST (5,9,0)	625	#if !PERL_VERSION_ATLEAST (5,9,0)
477	Safefree (PL_retstack);	626	Safefree (PL_retstack);
478	#endif	627	#endif
479	}	628	}
480		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	*/
481	static void	681	static int
482	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)
483	{	699	{
484	/*	700	/*
485	* emulate part of the perl startup here.	701	* emulate part of the perl startup here.
486	*/	702	*/
487
488	coro_init_stacks ();	703	coro_init_stacks (aTHX);
489		704
		705	PL_runops = RUNOPS_DEFAULT;
		706	PL_curcop = &PL_compiling;
		707	PL_in_eval = EVAL_NULL;
490	PL_curcop = 0;	708	PL_comppad = 0;
491	PL_in_eval = 0;
492	PL_curpm = 0;	709	PL_curpm = 0;
		710	PL_curpad = 0;
		711	PL_localizing = 0;
		712	PL_dirty = 0;
		713	PL_restartop = 0;
		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);
493		730
494	{	731	{
495	dSP;	732	dSP;
496	LOGOP myop;	733	LOGOP myop;
497		734
498	/* I have no idea why this is needed, but it is */
499	PUSHMARK (SP);
500
501	SvREFCNT_dec (GvAV (PL_defgv));
502	GvAV (PL_defgv) = coro->args; coro->args = 0;
503
504	Zero (&myop, 1, LOGOP);	735	Zero (&myop, 1, LOGOP);
505	myop.op_next = Nullop;	736	myop.op_next = Nullop;
506	myop.op_flags = OPf_WANT_VOID;	737	myop.op_flags = OPf_WANT_VOID;
507		738
		739	PUSHMARK (SP);
		740	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		741	PUTBACK;
508	PL_op = (OP *)&myop;	742	PL_op = (OP *)&myop;
509
510	PUSHMARK (SP);
511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
512	PUTBACK;
513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	743	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
514	SPAGAIN;	744	SPAGAIN;
515
516	ENTER; /* necessary e.g. for dounwind */
517	}	745	}
518	}
519		746
		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;
		753	}
		754
520	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
521	free_coro_mortal ()	792	free_coro_mortal (pTHX)
522	{	793	{
523	if (coro_mortal)	794	if (expect_true (coro_mortal))
524	{	795	{
525	SvREFCNT_dec (coro_mortal);	796	SvREFCNT_dec (coro_mortal);
526	coro_mortal = 0;	797	coro_mortal = 0;
527	}	798	}
528	}	799	}
529		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
		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 */
530	static void NOINLINE	928	static void NOINLINE
531	prepare_cctx (coro_cctx *cctx)	929	cctx_prepare (pTHX_ coro_cctx *cctx)
532	{	930	{
533	dSP;	931	dSP;
534	LOGOP myop;	932	LOGOP myop;
535		933
		934	PL_top_env = &PL_start_env;
		935
		936	if (cctx->flags & CC_TRACE)
		937	PL_runops = runops_trace;
		938
536	Zero (&myop, 1, LOGOP);	939	Zero (&myop, 1, LOGOP);
537	myop.op_next = PL_op;	940	myop.op_next = PL_op;
538	myop.op_flags = OPf_WANT_VOID;	941	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
539
540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
541		942
542	PUSHMARK (SP);	943	PUSHMARK (SP);
		944	EXTEND (SP, 2);
		945	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	946	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
544	PUTBACK;	947	PUTBACK;
		948	PL_op = (OP *)&myop;
545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	949	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
546	SPAGAIN;	950	SPAGAIN;
547	}	951	}
548		952
		953	/*
		954	* this is a _very_ stripped down perl interpreter ;)
		955	*/
549	static void	956	static void
550	coro_run (void *arg)	957	cctx_run (void *arg)
551	{	958	{
		959	dTHX;
		960
552	/* coro_run is the alternative epilogue of transfer() */	961	/* cctx_run is the alternative tail of transfer(), so unlock here. */
553	UNLOCK;	962	UNLOCK;
554		963
		964	/* we now skip the entersub that lead to transfer() */
		965	PL_op = PL_op->op_next;
		966
		967	/* inject a fake subroutine call to cctx_init */
		968	cctx_prepare (aTHX_ (coro_cctx *)arg);
		969
		970	/* somebody or something will hit me for both perl_run and PL_restartop */
		971	PL_restartop = PL_op;
		972	perl_run (PL_curinterp);
		973
555	/*	974	/*
556	* this is a _very_ stripped down perl interpreter ;)	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
557	*/	980	*/
558	PL_top_env = &PL_start_env;	981	PL_top_env = main_top_env;
559		982	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
560	/* inject call to cctx_init */
561	prepare_cctx ((coro_cctx *)arg);
562
563	/* somebody will hit me for both perl_run and PL_restartop */
564	perl_run (PL_curinterp);
565
566	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
567	abort ();
568	}	983	}
569		984
570	static coro_cctx *	985	static coro_cctx *
571	cctx_new ()	986	cctx_new ()
572	{	987	{
573	coro_cctx *cctx;	988	coro_cctx *cctx;
		989	void *stack_start;
		990	size_t stack_size;
574		991
575	++cctx_count;	992	++cctx_count;
576		993
577	New (0, cctx, 1, coro_cctx);	994	Newz (0, cctx, 1, coro_cctx);
578		995
579	#if HAVE_MMAP	996	#if HAVE_MMAP
580
581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	997	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
582	/* mmap suppsedly does allocate-on-write for us */	998	/* mmap supposedly does allocate-on-write for us */
583	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);
584		1000
585	if (cctx->sptr == (void *)-1)	1001	if (cctx->sptr != (void *)-1)
586	{
587	perror ("FATAL: unable to mmap stack for coroutine");
588	_exit (EXIT_FAILURE);
589	}	1002	{
590
591	# if STACKGUARD	1003	# if CORO_STACKGUARD
592	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	1004	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
593	# 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);
594		1015
595	#else
596
597	cctx->ssize = STACKSIZE * (long)sizeof (long);
598	New (0, cctx->sptr, STACKSIZE, long);
599
600	if (!cctx->sptr)	1016	if (!cctx->sptr)
601	{	1017	{
602	perror ("FATAL: unable to malloc stack for coroutine");	1018	perror ("FATAL: unable to allocate stack for coroutine");
603	_exit (EXIT_FAILURE);	1019	_exit (EXIT_FAILURE);
604	}	1020	}
605		1021
606	#endif	1022	stack_start = cctx->sptr;
		1023	stack_size = cctx->ssize;
		1024	}
607		1025
608	#if USE_VALGRIND	1026	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
609	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1027	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
610	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
611	cctx->ssize + (char *)cctx->sptr
612	);
613	#endif
614
615	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
616		1028
617	return cctx;	1029	return cctx;
618	}	1030	}
619		1031
620	static void	1032	static void
…		…
623	if (!cctx)	1035	if (!cctx)
624	return;	1036	return;
625		1037
626	--cctx_count;	1038	--cctx_count;
627		1039
628	#if USE_VALGRIND	1040	#if CORO_USE_VALGRIND
629	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1041	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
630	#endif	1042	#endif
631		1043
632	#if HAVE_MMAP	1044	#if HAVE_MMAP
		1045	if (cctx->flags & CC_MAPPED)
633	munmap (cctx->sptr, cctx->ssize);	1046	munmap (cctx->sptr, cctx->ssize);
634	#else	1047	else
		1048	#endif
635	Safefree (cctx->sptr);	1049	Safefree (cctx->sptr);
636	#endif
637		1050
638	Safefree (cctx);	1051	Safefree (cctx);
639	}	1052	}
640		1053
		1054	/* wether this cctx should be destructed */
		1055	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1056
641	static coro_cctx *	1057	static coro_cctx *
642	cctx_get ()	1058	cctx_get (pTHX)
643	{	1059	{
644	coro_cctx *cctx;	1060	while (expect_true (cctx_first))
645
646	if (cctx_first)
647	{	1061	{
648	cctx = cctx_first;	1062	coro_cctx *cctx = cctx_first;
649	cctx_first = cctx->next;	1063	cctx_first = cctx->next;
650	--cctx_idle;	1064	--cctx_idle;
651	}	1065
652	else	1066	if (expect_true (!CCTX_EXPIRED (cctx)))
653	{	1067	return cctx;
654	cctx = cctx_new ();	1068
655	PL_op = PL_op->op_next;	1069	cctx_destroy (cctx);
656	}	1070	}
657		1071
658	return cctx;	1072	return cctx_new ();
659	}	1073	}
660		1074
661	static void	1075	static void
662	cctx_put (coro_cctx *cctx)	1076	cctx_put (coro_cctx *cctx)
663	{	1077	{
664	/* free another cctx if overlimit */	1078	/* free another cctx if overlimit */
665	if (cctx_idle >= MAX_IDLE_CCTX)	1079	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
666	{	1080	{
667	coro_cctx *first = cctx_first;	1081	coro_cctx *first = cctx_first;
668	cctx_first = first->next;	1082	cctx_first = first->next;
669	--cctx_idle;	1083	--cctx_idle;
670		1084
671	assert (!first->inuse);
672	cctx_destroy (first);	1085	cctx_destroy (first);
673	}	1086	}
674		1087
675	++cctx_idle;	1088	++cctx_idle;
676	cctx->next = cctx_first;	1089	cctx->next = cctx_first;
677	cctx_first = cctx;	1090	cctx_first = cctx;
678	}	1091	}
679		1092
680	/* 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 */
681	static void NOINLINE	1121	static void NOINLINE
682	transfer (struct coro prev, struct coro next, int flags)	1122	transfer (pTHX_ struct coro prev, struct coro next)
683	{	1123	{
684	dSTACKLEVEL;	1124	dSTACKLEVEL;
		1125	static volatile int has_throw;
685		1126
686	/* sometimes transfer is only called to set idle_sp */	1127	/* sometimes transfer is only called to set idle_sp */
687	if (flags == TRANSFER_SET_STACKLEVEL)	1128	if (expect_false (!next))
		1129	{
688	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1130	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1131	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1132	}
689	else if (prev != next)	1133	else if (expect_true (prev != next))
690	{	1134	{
691	coro_cctx *prev__cctx;	1135	coro_cctx *prev__cctx;
692		1136
693	if (!prev->cctx)	1137	if (expect_false (prev->flags & CF_NEW))
694	{	1138	{
695	/* create a new empty context */	1139	/* create a new empty context */
696	Newz (0, prev->cctx, 1, coro_cctx);	1140	Newz (0, prev->cctx, 1, coro_cctx);
697	prev->cctx->inuse = 1;	1141	prev->flags &= ~CF_NEW;
698	prev->flags \|= CF_RUNNING;	1142	prev->flags \|= CF_RUNNING;
699	}	1143	}
700
701	if (!prev->flags & CF_RUNNING)
702	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
703
704	if (next->flags & CF_RUNNING)
705	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
706		1144
707	prev->flags &= ~CF_RUNNING;	1145	prev->flags &= ~CF_RUNNING;
708	next->flags \|= CF_RUNNING;	1146	next->flags \|= CF_RUNNING;
709		1147
710	LOCK;	1148	LOCK;
711		1149
712	if (next->mainstack)	1150	/* first get rid of the old state */
		1151	save_perl (aTHX_ prev);
		1152
		1153	if (expect_false (next->flags & CF_NEW))
713	{	1154	{
714	/* coroutine already started */	1155	/* need to start coroutine */
715	SAVE (prev, flags);	1156	next->flags &= ~CF_NEW;
716	LOAD (next);	1157	/* setup coroutine call */
		1158	coro_setup (aTHX_ next);
717	}	1159	}
718	else	1160	else
719	{	1161	load_perl (aTHX_ next);
720	/* need to start coroutine */
721	/* first get rid of the old state */
722	SAVE (prev, -1);
723	/* setup coroutine call */
724	setup_coro (next);
725	/* need a new stack */
726	assert (!next->stack);
727	}
728		1162
729	prev__cctx = prev->cctx;	1163	prev__cctx = prev->cctx;
730		1164
731	/* possibly "free" the cctx */	1165	/* possibly "free" the cctx */
732	if (prev__cctx->idle_sp == STACKLEVEL)	1166	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
733	{	1167	{
734	/* 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 */
735	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));
		1170
		1171	prev->cctx = 0;
		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);
736		1178
737	cctx_put (prev__cctx);	1179	cctx_put (prev__cctx);
738	prev->cctx = 0;
739	}	1180	}
740		1181
		1182	++next->usecount;
		1183
741	if (!next->cctx)	1184	if (expect_true (!next->cctx))
742	next->cctx = cctx_get ();	1185	next->cctx = cctx_get (aTHX);
743		1186
		1187	has_throw = !!next->throw;
		1188
744	if (prev__cctx != next->cctx)	1189	if (expect_false (prev__cctx != next->cctx))
745	{	1190	{
746	assert ( prev__cctx->inuse);
747	assert (!next->cctx->inuse);
748
749	prev__cctx->inuse = 0;
750	next->cctx->inuse = 1;
751
752	prev__cctx->top_env = PL_top_env;	1191	prev__cctx->top_env = PL_top_env;
753	PL_top_env = next->cctx->top_env;	1192	PL_top_env = next->cctx->top_env;
754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1193	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
755	}	1194	}
756		1195
757	free_coro_mortal ();	1196	free_coro_mortal (aTHX);
758
759	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	}
760	}	1211	}
761	}	1212	}
762		1213
763	struct transfer_args	1214	struct transfer_args
764	{	1215	{
765	struct coro prev, next;	1216	struct coro prev, next;
766	int flags;
767	};	1217	};
768		1218
769	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1219	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1220	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
770		1221
		1222	/ high level stuff ******************************************************/
		1223
771	static void	1224	static int
772	coro_state_destroy (struct coro *coro)	1225	coro_state_destroy (pTHX_ struct coro *coro)
773	{	1226	{
774	if (coro->refcnt--)	1227	if (coro->flags & CF_DESTROYED)
775	return;	1228	return 0;
776		1229
		1230	coro->flags \|= CF_DESTROYED;
		1231
777	if (coro->flags & CF_RUNNING)	1232	if (coro->flags & CF_READY)
778	croak ("FATAL: tried to destroy currently running coroutine");	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 */
779		1242
780	if (coro->mainstack && coro->mainstack != main_mainstack)	1243	if (coro->mainstack && coro->mainstack != main_mainstack)
781	{	1244	{
782	struct coro temp;	1245	struct coro temp;
783		1246
784	SAVE ((&temp), TRANSFER_SAVE_ALL);	1247	if (coro->flags & CF_RUNNING)
785	LOAD (coro);	1248	croak ("FATAL: tried to destroy currently running coroutine");
786		1249
787	coro_destroy_stacks ();	1250	save_perl (aTHX_ &temp);
		1251	load_perl (aTHX_ coro);
788		1252
789	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1253	coro_destroy (aTHX_ coro);
790		1254
		1255	load_perl (aTHX_ &temp);
		1256
791	coro->mainstack = 0;	1257	coro->slot = 0;
792	}	1258	}
793		1259
794	cctx_destroy (coro->cctx);	1260	cctx_destroy (coro->cctx);
795	SvREFCNT_dec (coro->args);	1261	SvREFCNT_dec (coro->args);
796	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;
797	}	1268	}
798		1269
799	static int	1270	static int
800	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1271	coro_state_free (pTHX_ SV sv, MAGIC mg)
801	{	1272	{
802	struct coro coro = (struct coro )mg->mg_ptr;	1273	struct coro coro = (struct coro )mg->mg_ptr;
803	mg->mg_ptr = 0;	1274	mg->mg_ptr = 0;
804		1275
		1276	coro->hv = 0;
		1277
		1278	if (--coro->refcnt < 0)
		1279	{
805	coro_state_destroy (coro);	1280	coro_state_destroy (aTHX_ coro);
		1281	Safefree (coro);
		1282	}
806		1283
807	return 0;	1284	return 0;
808	}	1285	}
809		1286
810	static int	1287	static int
…		…
817	return 0;	1294	return 0;
818	}	1295	}
819		1296
820	static MGVTBL coro_state_vtbl = {	1297	static MGVTBL coro_state_vtbl = {
821	0, 0, 0, 0,	1298	0, 0, 0, 0,
822	coro_state_clear,	1299	coro_state_free,
823	0,	1300	0,
824	#ifdef MGf_DUP	1301	#ifdef MGf_DUP
825	coro_state_dup,	1302	coro_state_dup,
826	#else	1303	#else
827	# define MGf_DUP 0	1304	# define MGf_DUP 0
828	#endif	1305	#endif
829	};	1306	};
830		1307
831	static struct coro *
832	SvSTATE (SV *coro)
833	{
834	HV *stash;
835	MAGIC *mg;
836
837	if (SvROK (coro))
838	coro = SvRV (coro);
839
840	stash = SvSTASH (coro);
841	if (stash != coro_stash && stash != coro_state_stash)
842	{
843	/* very slow, but rare, check */
844	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
845	croak ("Coro::State object required");
846	}
847
848	mg = SvMAGIC (coro);
849	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;
851	}
852
853	static void	1308	static void
854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1309	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
855	{	1310	{
856	ta->prev = SvSTATE (prev);	1311	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	1312	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;	1313	TRANSFER_CHECK (*ta);
859	}	1314	}
860		1315
861	static void	1316	static void
862	api_transfer (SV prev, SV next, int flags)	1317	api_transfer (SV prev_sv, SV next_sv)
863	{	1318	{
864	dTHX;	1319	dTHX;
865	struct transfer_args ta;	1320	struct transfer_args ta;
866		1321
867	prepare_transfer (&ta, prev, next, flags);	1322	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
868	TRANSFER (ta);	1323	TRANSFER (ta);
869	}	1324	}
870		1325
871	/ Coro ******************************************************************/	1326	/ Coro ******************************************************************/
872		1327
873	#define PRIO_MAX 3
874	#define PRIO_HIGH 1
875	#define PRIO_NORMAL 0
876	#define PRIO_LOW -1
877	#define PRIO_IDLE -3
878	#define PRIO_MIN -4
879
880	/* for Coro.pm */
881	static GV coro_current, coro_idle;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;
884
885	static void	1328	static void
886	coro_enq (SV *coro_sv)	1329	coro_enq (pTHX_ SV *coro_sv)
887	{	1330	{
888	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);
889	coro_nready++;
890	}	1332	}
891		1333
892	static SV *	1334	static SV *
893	coro_deq (int min_prio)	1335	coro_deq (pTHX_ int min_prio)
894	{	1336	{
895	int prio = PRIO_MAX - PRIO_MIN;	1337	int prio = PRIO_MAX - PRIO_MIN;
896		1338
897	min_prio -= PRIO_MIN;	1339	min_prio -= PRIO_MIN;
898	if (min_prio < 0)	1340	if (min_prio < 0)
899	min_prio = 0;	1341	min_prio = 0;
900		1342
901	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1343	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
902	if (AvFILLp (coro_ready [prio]) >= 0)	1344	if (AvFILLp (coro_ready [prio]) >= 0)
903	{
904	coro_nready--;
905	return av_shift (coro_ready [prio]);	1345	return av_shift (coro_ready [prio]);
906	}
907		1346
908	return 0;	1347	return 0;
909	}	1348	}
910		1349
911	static int	1350	static int
912	api_ready (SV *coro_sv)	1351	api_ready (SV *coro_sv)
913	{	1352	{
		1353	dTHX;
914	struct coro *coro;	1354	struct coro *coro;
915		1355
916	if (SvROK (coro_sv))	1356	if (SvROK (coro_sv))
917	coro_sv = SvRV (coro_sv);	1357	coro_sv = SvRV (coro_sv);
918		1358
919	coro = SvSTATE (coro_sv);	1359	coro = SvSTATE (coro_sv);
920		1360
921	if (coro->flags & CF_READY)	1361	if (coro->flags & CF_READY)
922	return 0;	1362	return 0;
923		1363
924	if (coro->flags & CF_RUNNING)
925	croak ("Coro::ready called on currently running coroutine");
926
927	coro->flags \|= CF_READY;	1364	coro->flags \|= CF_READY;
928		1365
929	LOCK;	1366	LOCK;
930	coro_enq (SvREFCNT_inc (coro_sv));	1367	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1368	++coro_nready;
931	UNLOCK;	1369	UNLOCK;
932		1370
933	return 1;	1371	return 1;
934	}	1372	}
935		1373
936	static int	1374	static int
937	api_is_ready (SV *coro_sv)	1375	api_is_ready (SV *coro_sv)
938	{	1376	{
		1377	dTHX;
939	return !!SvSTATE (coro_sv)->flags & CF_READY;	1378	return !!(SvSTATE (coro_sv)->flags & CF_READY);
940	}	1379	}
941		1380
942	static void	1381	static void
943	prepare_schedule (struct transfer_args *ta)	1382	prepare_schedule (pTHX_ struct transfer_args *ta)
944	{	1383	{
945	SV current, prev, *next;	1384	SV prev_sv, next_sv;
946
947	current = GvSV (coro_current);
948		1385
949	for (;;)	1386	for (;;)
950	{	1387	{
951	LOCK;	1388	LOCK;
952	next = coro_deq (PRIO_MIN);	1389	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1390
		1391	/* nothing to schedule: call the idle handler */
		1392	if (expect_false (!next_sv))
		1393	{
		1394	dSP;
		1395	UNLOCK;
		1396
		1397	ENTER;
		1398	SAVETMPS;
		1399
		1400	PUSHMARK (SP);
		1401	PUTBACK;
		1402	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1403
		1404	FREETMPS;
		1405	LEAVE;
		1406	continue;
		1407	}
		1408
		1409	ta->next = SvSTATE (next_sv);
		1410
		1411	/* cannot transfer to destroyed coros, skip and look for next */
		1412	if (expect_false (ta->next->flags & CF_DESTROYED))
		1413	{
		1414	UNLOCK;
		1415	SvREFCNT_dec (next_sv);
		1416	/* coro_nready is already taken care of by destroy */
		1417	continue;
		1418	}
		1419
		1420	--coro_nready;
953	UNLOCK;	1421	UNLOCK;
954
955	if (next)
956	break;	1422	break;
957
958	{
959	dSP;
960
961	ENTER;
962	SAVETMPS;
963
964	PUSHMARK (SP);
965	PUTBACK;
966	call_sv (GvSV (coro_idle), G_DISCARD);
967
968	FREETMPS;
969	LEAVE;
970	}	1423	}
971	}
972
973	prev = SvRV (current);
974	SvRV (current) = next;
975		1424
976	/* free this only after the transfer */	1425	/* free this only after the transfer */
		1426	prev_sv = SvRV (coro_current);
		1427	ta->prev = SvSTATE (prev_sv);
		1428	TRANSFER_CHECK (*ta);
		1429	assert (ta->next->flags & CF_READY);
		1430	ta->next->flags &= ~CF_READY;
		1431	SvRV_set (coro_current, next_sv);
		1432
977	LOCK;	1433	LOCK;
978	free_coro_mortal ();	1434	free_coro_mortal (aTHX);
		1435	coro_mortal = prev_sv;
979	UNLOCK;	1436	UNLOCK;
980	coro_mortal = prev;
981
982	ta->prev = SvSTATE (prev);
983	ta->next = SvSTATE (next);
984	ta->flags = TRANSFER_SAVE_ALL;
985
986	ta->next->flags &= ~CF_READY;
987	}	1437	}
988		1438
989	static void	1439	static void
990	prepare_cede (struct transfer_args *ta)	1440	prepare_cede (pTHX_ struct transfer_args *ta)
991	{	1441	{
992	api_ready (GvSV (coro_current));	1442	api_ready (coro_current);
993
994	prepare_schedule (ta);	1443	prepare_schedule (aTHX_ ta);
		1444	}
		1445
		1446	static int
		1447	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1448	{
		1449	if (coro_nready)
		1450	{
		1451	SV *prev = SvRV (coro_current);
		1452	prepare_schedule (aTHX_ ta);
		1453	api_ready (prev);
		1454	return 1;
		1455	}
		1456	else
		1457	return 0;
995	}	1458	}
996		1459
997	static void	1460	static void
998	api_schedule (void)	1461	api_schedule (void)
999	{	1462	{
1000	dTHX;	1463	dTHX;
1001	struct transfer_args ta;	1464	struct transfer_args ta;
1002		1465
1003	prepare_schedule (&ta);	1466	prepare_schedule (aTHX_ &ta);
1004	TRANSFER (ta);	1467	TRANSFER (ta);
1005	}	1468	}
1006		1469
1007	static void	1470	static int
1008	api_cede (void)	1471	api_cede (void)
1009	{	1472	{
1010	dTHX;	1473	dTHX;
1011	struct transfer_args ta;	1474	struct transfer_args ta;
1012		1475
1013	prepare_cede (&ta);	1476	prepare_cede (aTHX_ &ta);
		1477
		1478	if (expect_true (ta.prev != ta.next))
		1479	{
1014	TRANSFER (ta);	1480	TRANSFER (ta);
		1481	return 1;
		1482	}
		1483	else
		1484	return 0;
1015	}	1485	}
1016		1486
		1487	static int
		1488	api_cede_notself (void)
		1489	{
		1490	dTHX;
		1491	struct transfer_args ta;
		1492
		1493	if (prepare_cede_notself (aTHX_ &ta))
		1494	{
		1495	TRANSFER (ta);
		1496	return 1;
		1497	}
		1498	else
		1499	return 0;
		1500	}
		1501
		1502	static void
		1503	api_trace (SV *coro_sv, int flags)
		1504	{
		1505	dTHX;
		1506	struct coro *coro = SvSTATE (coro_sv);
		1507
		1508	if (flags & CC_TRACE)
		1509	{
		1510	if (!coro->cctx)
		1511	coro->cctx = cctx_new ();
		1512	else if (!(coro->cctx->flags & CC_TRACE))
		1513	croak ("cannot enable tracing on coroutine with custom stack");
		1514
		1515	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1516	}
		1517	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1518	{
		1519	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1520
		1521	if (coro->flags & CF_RUNNING)
		1522	PL_runops = RUNOPS_DEFAULT;
		1523	else
		1524	coro->slot->runops = RUNOPS_DEFAULT;
		1525	}
		1526	}
		1527
1017	MODULE = Coro::State PACKAGE = Coro::State	1528	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1018		1529
1019	PROTOTYPES: DISABLE	1530	PROTOTYPES: DISABLE
1020		1531
1021	BOOT:	1532	BOOT:
1022	{	1533	{
1023	#ifdef USE_ITHREADS	1534	#ifdef USE_ITHREADS
1024	MUTEX_INIT (&coro_mutex);	1535	MUTEX_INIT (&coro_mutex);
1025	#endif	1536	#endif
1026	BOOT_PAGESIZE;	1537	BOOT_PAGESIZE;
1027		1538
		1539	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1540	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1541	#if 0
		1542	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1543	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1544	#endif
		1545	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1546	rv_diehook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1547	rv_warnhook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1548
1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1549	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029		1550
1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1551	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1552	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1032	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1553	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1554	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1033		1555
1034	main_mainstack = PL_mainstack;	1556	main_mainstack = PL_mainstack;
		1557	main_top_env = PL_top_env;
		1558
		1559	while (main_top_env->je_prev)
		1560	main_top_env = main_top_env->je_prev;
1035		1561
1036	coroapi.ver = CORO_API_VERSION;	1562	coroapi.ver = CORO_API_VERSION;
		1563	coroapi.rev = CORO_API_REVISION;
1037	coroapi.transfer = api_transfer;	1564	coroapi.transfer = api_transfer;
1038		1565
1039	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1566	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1040	}	1567	}
1041		1568
1042	SV *	1569	SV *
1043	new (char *klass, ...)	1570	new (char *klass, ...)
1044	CODE:	1571	CODE:
1045	{	1572	{
1046	struct coro *coro;	1573	struct coro *coro;
		1574	MAGIC *mg;
1047	HV *hv;	1575	HV *hv;
1048	int i;	1576	int i;
1049		1577
1050	Newz (0, coro, 1, struct coro);	1578	Newz (0, coro, 1, struct coro);
1051	coro->args = newAV ();	1579	coro->args = newAV ();
		1580	coro->flags = CF_NEW;
1052		1581
		1582	if (coro_first) coro_first->prev = coro;
		1583	coro->next = coro_first;
		1584	coro_first = coro;
		1585
1053	hv = newHV ();	1586	coro->hv = hv = newHV ();
1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1587	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1588	mg->mg_flags \|= MGf_DUP;
1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1589	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056		1590
		1591	av_extend (coro->args, items - 1);
1057	for (i = 1; i < items; i++)	1592	for (i = 1; i < items; i++)
1058	av_push (coro->args, newSVsv (ST (i)));	1593	av_push (coro->args, newSVsv (ST (i)));
1059	}	1594	}
1060	OUTPUT:	1595	OUTPUT:
1061	RETVAL	1596	RETVAL
1062		1597
		1598	# these not obviously related functions are all rolled into the same xs
		1599	# function to increase chances that they all will call transfer with the same
		1600	# stack offset
1063	void	1601	void
1064	_set_stacklevel (...)	1602	_set_stacklevel (...)
1065	ALIAS:	1603	ALIAS:
1066	Coro::State::transfer = 1	1604	Coro::State::transfer = 1
1067	Coro::schedule = 2	1605	Coro::schedule = 2
1068	Coro::cede = 3	1606	Coro::cede = 3
1069	Coro::Cont::yield = 4	1607	Coro::cede_notself = 4
1070	CODE:	1608	CODE:
1071	{	1609	{
1072	struct transfer_args ta;	1610	struct transfer_args ta;
1073		1611
1074	switch (ix)	1612	switch (ix)
1075	{	1613	{
1076	case 0:	1614	case 0:
1077	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1615	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1078	ta.next = 0;	1616	ta.next = 0;
1079	ta.flags = TRANSFER_SET_STACKLEVEL;
1080	break;	1617	break;
1081		1618
1082	case 1:	1619	case 1:
1083	if (items != 3)	1620	if (items != 2)
1084	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1621	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1085		1622
1086	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1623	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1087	break;	1624	break;
1088		1625
1089	case 2:	1626	case 2:
1090	prepare_schedule (&ta);	1627	prepare_schedule (aTHX_ &ta);
1091	break;	1628	break;
1092		1629
1093	case 3:	1630	case 3:
1094	prepare_cede (&ta);	1631	prepare_cede (aTHX_ &ta);
1095	break;	1632	break;
1096		1633
1097	case 4:	1634	case 4:
1098	{	1635	if (!prepare_cede_notself (aTHX_ &ta))
1099	SV *yieldstack;	1636	XSRETURN_EMPTY;
1100	SV *sv;
1101	AV *defav = GvAV (PL_defgv);
1102		1637
1103	yieldstack = *hv_fetch (
1104	(HV *)SvRV (GvSV (coro_current)),
1105	"yieldstack", sizeof ("yieldstack") - 1,
1106	0
1107	);
1108
1109	/* set up @_ -- ugly */
1110	av_clear (defav);
1111	av_fill (defav, items - 1);
1112	while (items--)
1113	av_store (defav, items, SvREFCNT_inc (ST(items)));
1114
1115	sv = av_pop ((AV *)SvRV (yieldstack));
1116	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1117	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1118	ta.flags = 0;
1119	SvREFCNT_dec (sv);
1120	}
1121	break;	1638	break;
1122
1123	}	1639	}
1124		1640
		1641	BARRIER;
		1642	PUTBACK;
1125	TRANSFER (ta);	1643	TRANSFER (ta);
		1644	SPAGAIN; /* might be the sp of a different coroutine now */
		1645	/* be extra careful not to ever do anything after TRANSFER */
1126	}	1646	}
1127		1647
1128	void	1648	bool
1129	_clone_state_from (SV dst, SV src)	1649	_destroy (SV *coro_sv)
1130	CODE:	1650	CODE:
1131	{	1651	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1132	struct coro *coro_src = SvSTATE (src);	1652	OUTPUT:
1133		1653	RETVAL
1134	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1135
1136	++coro_src->refcnt;
1137	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1138	}
1139		1654
1140	void	1655	void
1141	_exit (code)	1656	_exit (code)
1142	int code	1657	int code
1143	PROTOTYPE: $	1658	PROTOTYPE: $
1144	CODE:	1659	CODE:
1145	_exit (code);	1660	_exit (code);
1146		1661
1147	int	1662	int
		1663	cctx_stacksize (int new_stacksize = 0)
		1664	CODE:
		1665	RETVAL = coro_stacksize;
		1666	if (new_stacksize)
		1667	coro_stacksize = new_stacksize;
		1668	OUTPUT:
		1669	RETVAL
		1670
		1671	int
1148	cctx_count ()	1672	cctx_count ()
1149	CODE:	1673	CODE:
1150	RETVAL = cctx_count;	1674	RETVAL = cctx_count;
1151	OUTPUT:	1675	OUTPUT:
1152	RETVAL	1676	RETVAL
…		…
1156	CODE:	1680	CODE:
1157	RETVAL = cctx_idle;	1681	RETVAL = cctx_idle;
1158	OUTPUT:	1682	OUTPUT:
1159	RETVAL	1683	RETVAL
1160		1684
		1685	void
		1686	list ()
		1687	PPCODE:
		1688	{
		1689	struct coro *coro;
		1690	for (coro = coro_first; coro; coro = coro->next)
		1691	if (coro->hv)
		1692	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1693	}
		1694
		1695	void
		1696	call (Coro::State coro, SV *coderef)
		1697	ALIAS:
		1698	eval = 1
		1699	CODE:
		1700	{
		1701	if (coro->mainstack)
		1702	{
		1703	struct coro temp;
		1704
		1705	if (!(coro->flags & CF_RUNNING))
		1706	{
		1707	save_perl (aTHX_ &temp);
		1708	load_perl (aTHX_ coro);
		1709	}
		1710
		1711	{
		1712	dSP;
		1713	ENTER;
		1714	SAVETMPS;
		1715	PUTBACK;
		1716	PUSHSTACK;
		1717	PUSHMARK (SP);
		1718
		1719	if (ix)
		1720	eval_sv (coderef, 0);
		1721	else
		1722	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1723
		1724	POPSTACK;
		1725	SPAGAIN;
		1726	FREETMPS;
		1727	LEAVE;
		1728	PUTBACK;
		1729	}
		1730
		1731	if (!(coro->flags & CF_RUNNING))
		1732	{
		1733	save_perl (aTHX_ coro);
		1734	load_perl (aTHX_ &temp);
		1735	}
		1736	}
		1737	}
		1738
		1739	SV *
		1740	is_ready (Coro::State coro)
		1741	PROTOTYPE: $
		1742	ALIAS:
		1743	is_ready = CF_READY
		1744	is_running = CF_RUNNING
		1745	is_new = CF_NEW
		1746	is_destroyed = CF_DESTROYED
		1747	CODE:
		1748	RETVAL = boolSV (coro->flags & ix);
		1749	OUTPUT:
		1750	RETVAL
		1751
		1752	void
		1753	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1754
		1755	SV *
		1756	has_stack (Coro::State coro)
		1757	PROTOTYPE: $
		1758	CODE:
		1759	RETVAL = boolSV (!!coro->cctx);
		1760	OUTPUT:
		1761	RETVAL
		1762
		1763	int
		1764	is_traced (Coro::State coro)
		1765	PROTOTYPE: $
		1766	CODE:
		1767	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1768	OUTPUT:
		1769	RETVAL
		1770
		1771	IV
		1772	rss (Coro::State coro)
		1773	PROTOTYPE: $
		1774	ALIAS:
		1775	usecount = 1
		1776	CODE:
		1777	switch (ix)
		1778	{
		1779	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1780	case 1: RETVAL = coro->usecount; break;
		1781	}
		1782	OUTPUT:
		1783	RETVAL
		1784
		1785
1161	MODULE = Coro::State PACKAGE = Coro	1786	MODULE = Coro::State PACKAGE = Coro
1162		1787
1163	BOOT:	1788	BOOT:
1164	{	1789	{
1165	int i;	1790	int i;
1166		1791
		1792	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1793	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1794	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1795
		1796	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1797	SvREADONLY_on (coro_current);
		1798
1167	coro_stash = gv_stashpv ("Coro", TRUE);	1799	coro_stash = gv_stashpv ("Coro", TRUE);
1168		1800
1169	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1801	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1170	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1802	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1171	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1803	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1172	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1804	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1173	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1805	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1174	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1806	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1175		1807
1176	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1177	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1178
1179	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1808	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1180	coro_ready[i] = newAV ();	1809	coro_ready[i] = newAV ();
1181		1810
1182	{	1811	{
1183	SV *sv = perl_get_sv("Coro::API", 1);	1812	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1813	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1184		1814
1185	coroapi.schedule = api_schedule;	1815	coroapi.schedule = api_schedule;
1186	coroapi.cede = api_cede;	1816	coroapi.cede = api_cede;
		1817	coroapi.cede_notself = api_cede_notself;
1187	coroapi.ready = api_ready;	1818	coroapi.ready = api_ready;
1188	coroapi.is_ready = api_is_ready;	1819	coroapi.is_ready = api_is_ready;
1189	coroapi.nready = &coro_nready;	1820	coroapi.nready = &coro_nready;
1190	coroapi.current = coro_current;	1821	coroapi.current = coro_current;
1191		1822
1192	GCoroAPI = &coroapi;	1823	GCoroAPI = &coroapi;
1193	sv_setiv (sv, (IV)&coroapi);	1824	sv_setiv (sv, (IV)&coroapi);
1194	SvREADONLY_on (sv);	1825	SvREADONLY_on (sv);
1195	}	1826	}
1196	}	1827	}
		1828
		1829	void
		1830	_set_current (SV *current)
		1831	PROTOTYPE: $
		1832	CODE:
		1833	SvREFCNT_dec (SvRV (coro_current));
		1834	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1197		1835
1198	int	1836	int
1199	prio (Coro::State coro, int newprio = 0)	1837	prio (Coro::State coro, int newprio = 0)
1200	ALIAS:	1838	ALIAS:
1201	nice = 1	1839	nice = 1
…		…
1204	RETVAL = coro->prio;	1842	RETVAL = coro->prio;
1205		1843
1206	if (items > 1)	1844	if (items > 1)
1207	{	1845	{
1208	if (ix)	1846	if (ix)
1209	newprio += coro->prio;	1847	newprio = coro->prio - newprio;
1210		1848
1211	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1849	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1212	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1850	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1213		1851
1214	coro->prio = newprio;	1852	coro->prio = newprio;
1215	}	1853	}
1216	}	1854	}
		1855	OUTPUT:
		1856	RETVAL
1217		1857
1218	SV *	1858	SV *
1219	ready (SV *self)	1859	ready (SV *self)
1220	PROTOTYPE: $	1860	PROTOTYPE: $
1221	CODE:	1861	CODE:
1222	RETVAL = boolSV (api_ready (self));	1862	RETVAL = boolSV (api_ready (self));
1223	OUTPUT:	1863	OUTPUT:
1224	RETVAL	1864	RETVAL
1225		1865
1226	SV *
1227	is_ready (SV *self)
1228	PROTOTYPE: $
1229	CODE:
1230	RETVAL = boolSV (api_is_ready (self));
1231	OUTPUT:
1232	RETVAL
1233
1234	int	1866	int
1235	nready (...)	1867	nready (...)
1236	PROTOTYPE:	1868	PROTOTYPE:
1237	CODE:	1869	CODE:
1238	RETVAL = coro_nready;	1870	RETVAL = coro_nready;
1239	OUTPUT:	1871	OUTPUT:
1240	RETVAL	1872	RETVAL
1241		1873
		1874	void
		1875	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1876	PROTOTYPE: $;$
		1877	CODE:
		1878	SvREFCNT_dec (self->throw);
		1879	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1880
		1881	# for async_pool speedup
		1882	void
		1883	_pool_1 (SV *cb)
		1884	CODE:
		1885	{
		1886	struct coro *coro = SvSTATE (coro_current);
		1887	HV hv = (HV )SvRV (coro_current);
		1888	AV *defav = GvAV (PL_defgv);
		1889	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1890	AV *invoke_av;
		1891	int i, len;
		1892
		1893	if (!invoke)
		1894	croak ("\3async_pool terminate\2\n");
		1895
		1896	SvREFCNT_dec (coro->saved_deffh);
		1897	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1898
		1899	hv_store (hv, "desc", sizeof ("desc") - 1,
		1900	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1901
		1902	invoke_av = (AV *)SvRV (invoke);
		1903	len = av_len (invoke_av);
		1904
		1905	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1906
		1907	if (len > 0)
		1908	{
		1909	av_fill (defav, len - 1);
		1910	for (i = 0; i < len; ++i)
		1911	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1912	}
		1913
		1914	SvREFCNT_dec (invoke);
		1915	}
		1916
		1917	void
		1918	_pool_2 (SV *cb)
		1919	CODE:
		1920	{
		1921	struct coro *coro = SvSTATE (coro_current);
		1922
		1923	sv_setsv (cb, &PL_sv_undef);
		1924
		1925	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1926	coro->saved_deffh = 0;
		1927
		1928	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1929	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1930	croak ("\3async_pool terminate\2\n");
		1931
		1932	av_clear (GvAV (PL_defgv));
		1933	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1934	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1935
		1936	coro->prio = 0;
		1937
		1938	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1939	api_trace (coro_current, 0);
		1940
		1941	av_push (av_async_pool, newSVsv (coro_current));
		1942	}
		1943
		1944
1242	MODULE = Coro::State PACKAGE = Coro::AIO	1945	MODULE = Coro::State PACKAGE = Coro::AIO
1243		1946
1244	SV *	1947	SV *
1245	_get_state ()	1948	_get_state ()
1246	CODE:	1949	CODE:
1247	{	1950	{
1248	struct {	1951	struct io_state *data;
1249	int errorno;
1250	int laststype;
1251	int laststatval;
1252	Stat_t statcache;
1253	} data;
1254		1952
		1953	RETVAL = newSV (sizeof (struct io_state));
		1954	data = (struct io_state *)SvPVX (RETVAL);
		1955	SvCUR_set (RETVAL, sizeof (struct io_state));
		1956	SvPOK_only (RETVAL);
		1957
1255	data.errorno = errno;	1958	data->errorno = errno;
1256	data.laststype = PL_laststype;	1959	data->laststype = PL_laststype;
1257	data.laststatval = PL_laststatval;	1960	data->laststatval = PL_laststatval;
1258	data.statcache = PL_statcache;	1961	data->statcache = PL_statcache;
1259
1260	RETVAL = newSVpvn ((char *)&data, sizeof data);
1261	}	1962	}
1262	OUTPUT:	1963	OUTPUT:
1263	RETVAL	1964	RETVAL
1264		1965
1265	void	1966	void
1266	_set_state (char *data_)	1967	_set_state (char *data_)
1267	PROTOTYPE: $	1968	PROTOTYPE: $
1268	CODE:	1969	CODE:
1269	{	1970	{
1270	struct {	1971	struct io_state data = (void )data_;
1271	int errorno;
1272	int laststype;
1273	int laststatval;
1274	Stat_t statcache;
1275	} data = (void )data_;
1276		1972
1277	errno = data->errorno;	1973	errno = data->errorno;
1278	PL_laststype = data->laststype;	1974	PL_laststype = data->laststype;
1279	PL_laststatval = data->laststatval;	1975	PL_laststatval = data->laststatval;
1280	PL_statcache = data->statcache;	1976	PL_statcache = data->statcache;
1281	}	1977	}
		1978

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Comparing Coro/Coro/State.xs (file contents): Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC vs. Revision 1.216 by root, Wed Nov 14 10:24:14 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC vs.
Revision 1.216 by root, Wed Nov 14 10:24:14 2007 UTC