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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.232 by root, Thu Apr 24 12:40:38 2008 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
2		5
3	#include "EXTERN.h"	6	#include "EXTERN.h"
4	#include "perl.h"	7	#include "perl.h"
5	#include "XSUB.h"	8	#include "XSUB.h"
6		9
7	#include "patchlevel.h"	10	#include "patchlevel.h"
8		11
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	/* 5.8.7 */
44	#ifndef SvRV_set
45	# define SvRV_set(s,v) SvRV(s) = (v)
46	#endif
47
48	#include <stdio.h>	12	#include <stdio.h>
49	#include <errno.h>	13	#include <errno.h>
50	#include <assert.h>	14	#include <assert.h>
51		15
52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	16	#ifdef WIN32
53	# undef STACKGUARD	17	# undef setjmp
54	#endif	18	# undef longjmp
55		19	# undef _exit
56	#ifndef STACKGUARD	20	# define setjmp _setjmp // deep magic, don't ask
57	# define STACKGUARD 0	21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
58	#endif	23	#endif
59		24
60	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
61	# include <unistd.h>	26	# include <unistd.h>
62	# include <sys/mman.h>	27	# include <sys/mman.h>
78	#else	43	#else
79	# define PAGESIZE 0	44	# define PAGESIZE 0
80	# define BOOT_PAGESIZE (void)0	45	# define BOOT_PAGESIZE (void)0
81	#endif	46	#endif
82		47
83	/* The next macro should declare a variable stacklevel that contains and approximation	48	#if CORO_USE_VALGRIND
84	* to the current C stack pointer. Its property is that it changes with each call	49	# include <valgrind/valgrind.h>
85	* and should be unique. */	50	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		51	#else
		52	# define REGISTER_STACK(cctx,start,end)
		53	#endif
		54
		55	/* the maximum number of idle cctx that will be pooled */
		56	#define MAX_IDLE_CCTX 8
		57
		58	#define PERL_VERSION_ATLEAST(a,b,c) \
		59	(PERL_REVISION > (a) \
		60	\|\| (PERL_REVISION == (a) \
		61	&& (PERL_VERSION > (b) \
		62	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		63
		64	#if !PERL_VERSION_ATLEAST (5,6,0)
		65	# ifndef PL_ppaddr
		66	# define PL_ppaddr ppaddr
		67	# endif
		68	# ifndef call_sv
		69	# define call_sv perl_call_sv
		70	# endif
		71	# ifndef get_sv
		72	# define get_sv perl_get_sv
		73	# endif
		74	# ifndef get_cv
		75	# define get_cv perl_get_cv
		76	# endif
		77	# ifndef IS_PADGV
		78	# define IS_PADGV(v) 0
		79	# endif
		80	# ifndef IS_PADCONST
		81	# define IS_PADCONST(v) 0
		82	# endif
		83	#endif
		84
		85	/* 5.8.8 */
		86	#ifndef GV_NOTQUAL
		87	# define GV_NOTQUAL 0
		88	#endif
		89	#ifndef newSV
		90	# define newSV(l) NEWSV(0,l)
		91	#endif
		92
		93	/* 5.11 */
		94	#ifndef CxHASARGS
		95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		96	#endif
		97
		98	/* 5.8.7 */
		99	#ifndef SvRV_set
		100	# define SvRV_set(s,v) SvRV(s) = (v)
		101	#endif
		102
		103	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		104	# undef CORO_STACKGUARD
		105	#endif
		106
		107	#ifndef CORO_STACKGUARD
		108	# define CORO_STACKGUARD 0
		109	#endif
		110
		111	/* prefer perl internal functions over our own? */
		112	#ifndef CORO_PREFER_PERL_FUNCTIONS
		113	# define CORO_PREFER_PERL_FUNCTIONS 0
		114	#endif
		115
		116	/* The next macros try to return the current stack pointer, in an as
		117	* portable way as possible. */
86	#define dSTACKLEVEL int stacklevel	118	#define dSTACKLEVEL volatile char stacklevel
87	#define STACKLEVEL ((void *)&stacklevel)	119	#define STACKLEVEL ((void *)&stacklevel)
88		120
89	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
90		122
91	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
		125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
93	#else	127	#else
94	# define attribute(x)	128	# define attribute(x)
		129	# define BARRIER
		130	# define expect(expr,value) (expr)
95	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
96		135
97	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
98		137
99	#include "CoroAPI.h"	138	#include "CoroAPI.h"
100		139
…		…
105	#else	144	#else
106	# define LOCK (void)0	145	# define LOCK (void)0
107	# define UNLOCK (void)0	146	# define UNLOCK (void)0
108	#endif	147	#endif
109		148
		149	/* helper storage struct for Coro::AIO */
110	struct io_state	150	struct io_state
111	{	151	{
112	int errorno;	152	int errorno;
113	I32 laststype;	153	I32 laststype;
114	int laststatval;	154	int laststatval;
115	Stat_t statcache;	155	Stat_t statcache;
116	};	156	};
117		157
		158	static size_t coro_stacksize = CORO_STACKSIZE;
118	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
119	static AV main_mainstack; / used to differentiate between $main and others */	160	static AV main_mainstack; / used to differentiate between $main and others */
		161	static JMPENV *main_top_env;
120	static HV coro_state_stash, coro_stash;	162	static HV coro_state_stash, coro_stash;
121	static SV coro_mortal; / will be freed after next transfer */	163	static volatile SV coro_mortal; / will be freed after next transfer */
		164
		165	static GV irsgv; / $/ */
		166	static GV stdoutgv; / STDOUT /
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV hv_sig; / %SIG */
		170
		171	/* async_pool helper stuff */
		172	static SV *sv_pool_rss;
		173	static SV *sv_pool_size;
		174	static AV *av_async_pool;
122		175
123	static struct coro_cctx *cctx_first;	176	static struct coro_cctx *cctx_first;
124	static int cctx_count, cctx_idle;	177	static int cctx_count, cctx_idle;
		178
		179	enum {
		180	CC_MAPPED = 0x01,
		181	CC_NOREUSE = 0x02, /* throw this away after tracing */
		182	CC_TRACE = 0x04,
		183	CC_TRACE_SUB = 0x08, /* trace sub calls */
		184	CC_TRACE_LINE = 0x10, /* trace each statement */
		185	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		186	};
125		187
126	/* this is a structure representing a c-level coroutine */	188	/* this is a structure representing a c-level coroutine */
127	typedef struct coro_cctx {	189	typedef struct coro_cctx {
128	struct coro_cctx *next;	190	struct coro_cctx *next;
129		191
130	/* the stack */	192	/* the stack */
131	void *sptr;	193	void *sptr;
132	long ssize; /* positive == mmap, otherwise malloc */	194	size_t ssize;
133		195
134	/* cpu state */	196	/* cpu state */
135	void idle_sp; / sp of top-level transfer/schedule/cede call */	197	void idle_sp; / sp of top-level transfer/schedule/cede call */
		198	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
136	JMPENV *top_env;	199	JMPENV *top_env;
137	coro_context cctx;	200	coro_context cctx;
138		201
139	int inuse;
140
141	#if USE_VALGRIND	202	#if CORO_USE_VALGRIND
142	int valgrind_id;	203	int valgrind_id;
143	#endif	204	#endif
		205	unsigned char flags;
144	} coro_cctx;	206	} coro_cctx;
145		207
146	enum {	208	enum {
147	CF_RUNNING = 0x0001, /* coroutine is running */	209	CF_RUNNING = 0x0001, /* coroutine is running */
148	CF_READY = 0x0002, /* coroutine is ready */	210	CF_READY = 0x0002, /* coroutine is ready */
149	CF_NEW = 0x0004, /* ahs never been switched to */	211	CF_NEW = 0x0004, /* has never been switched to */
		212	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
150	};	213	};
		214
		215	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		216	typedef struct {
		217	SV *defsv;
		218	AV *defav;
		219	SV *errsv;
		220	SV *irsgv;
		221	#define VAR(name,type) type name;
		222	# include "state.h"
		223	#undef VAR
		224	} perl_slots;
		225
		226	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
151		227
152	/* this is a structure representing a perl-level coroutine */	228	/* this is a structure representing a perl-level coroutine */
153	struct coro {	229	struct coro {
154	/* the c coroutine allocated to this perl coroutine, if any */	230	/* the c coroutine allocated to this perl coroutine, if any */
155	coro_cctx *cctx;	231	coro_cctx *cctx;
156		232
		233	/* process data */
		234	AV *mainstack;
		235	perl_slots slot; / basically the saved sp */
		236
157	/* data associated with this coroutine (initial args) */	237	AV args; / data associated with this coroutine (initial args) */
158	AV *args;	238	int refcnt; /* coroutines are refcounted, yes */
159	int refcnt;
160	int save; /* CORO_SAVE flags */
161	int flags; /* CF_ flags */	239	int flags; /* CF_ flags */
		240	HV hv; / the perl hash associated with this coro, if any */
162		241
163	/* optionally saved, might be zero */	242	/* statistics */
164	AV defav; / @_ */	243	int usecount; /* number of transfers to this coro */
165	SV defsv; / $_ */
166	SV errsv; / $@ */
167	SV irssv; / $/ */
168	SV irssv_sv; / real $/ cache */
169
170	#define VAR(name,type) type name;
171	# include "state.h"
172	#undef VAR
173		244
174	/* coro process data */	245	/* coro process data */
175	int prio;	246	int prio;
		247	SV throw; / exception to be thrown */
		248
		249	/* async_pool */
		250	SV *saved_deffh;
		251
		252	/* linked list */
		253	struct coro next, prev;
176	};	254	};
177		255
178	typedef struct coro *Coro__State;	256	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	257	typedef struct coro *Coro__State_or_hashref;
180		258
		259	/ Coro ******************************************************************/
		260
		261	#define PRIO_MAX 3
		262	#define PRIO_HIGH 1
		263	#define PRIO_NORMAL 0
		264	#define PRIO_LOW -1
		265	#define PRIO_IDLE -3
		266	#define PRIO_MIN -4
		267
		268	/* for Coro.pm */
		269	static SV *coro_current;
		270	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		271	static int coro_nready;
		272	static struct coro *coro_first;
		273
		274	/ lowlevel stuff ********************************************************/
		275
		276	static SV *
		277	coro_get_sv (pTHX_ const char *name, int create)
		278	{
		279	#if PERL_VERSION_ATLEAST (5,10,0)
		280	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		281	get_sv (name, create);
		282	#endif
		283	return get_sv (name, create);
		284	}
		285
181	static AV *	286	static AV *
		287	coro_get_av (pTHX_ const char *name, int create)
		288	{
		289	#if PERL_VERSION_ATLEAST (5,10,0)
		290	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		291	get_av (name, create);
		292	#endif
		293	return get_av (name, create);
		294	}
		295
		296	static HV *
		297	coro_get_hv (pTHX_ const char *name, int create)
		298	{
		299	#if PERL_VERSION_ATLEAST (5,10,0)
		300	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		301	get_hv (name, create);
		302	#endif
		303	return get_hv (name, create);
		304	}
		305
		306	static AV *
182	coro_clone_padlist (CV *cv)	307	coro_clone_padlist (pTHX_ CV *cv)
183	{	308	{
184	AV *padlist = CvPADLIST (cv);	309	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	310	AV newpadlist, newpad;
186		311
187	newpadlist = newAV ();	312	newpadlist = newAV ();
188	AvREAL_off (newpadlist);	313	AvREAL_off (newpadlist);
189	#if PERL_VERSION_ATLEAST (5,9,0)	314	#if PERL_VERSION_ATLEAST (5,10,0)
190	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	315	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
191	#else	316	#else
192	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	317	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
193	#endif	318	#endif
194	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	319	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
199		324
200	return newpadlist;	325	return newpadlist;
201	}	326	}
202		327
203	static void	328	static void
204	free_padlist (AV *padlist)	329	free_padlist (pTHX_ AV *padlist)
205	{	330	{
206	/* may be during global destruction */	331	/* may be during global destruction */
207	if (SvREFCNT (padlist))	332	if (SvREFCNT (padlist))
208	{	333	{
209	I32 i = AvFILLp (padlist);	334	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	355	AV *padlist;
231	AV av = (AV )mg->mg_obj;	356	AV av = (AV )mg->mg_obj;
232		357
233	/* casting is fun. */	358	/* casting is fun. */
234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	359	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
235	free_padlist (padlist);	360	free_padlist (aTHX_ padlist);
236
237	SvREFCNT_dec (av);
238		361
239	return 0;	362	return 0;
240	}	363	}
241		364
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	365	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		366	#define CORO_MAGIC_type_state PERL_MAGIC_ext
243		367
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	368	static MGVTBL coro_cv_vtbl = {
		369	0, 0, 0, 0,
		370	coro_cv_free
		371	};
245		372
246	#define CORO_MAGIC(cv) \	373	#define CORO_MAGIC(sv,type) \
247	SvMAGIC (cv) \	374	SvMAGIC (sv) \
248	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	375	? SvMAGIC (sv)->mg_type == type \
249	? SvMAGIC (cv) \	376	? SvMAGIC (sv) \
250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	377	: mg_find (sv, type) \
251	: 0	378	: 0
		379
		380	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		381	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		382
		383	static struct coro *
		384	SvSTATE_ (pTHX_ SV *coro)
		385	{
		386	HV *stash;
		387	MAGIC *mg;
		388
		389	if (SvROK (coro))
		390	coro = SvRV (coro);
		391
		392	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		393	croak ("Coro::State object required");
		394
		395	stash = SvSTASH (coro);
		396	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		397	{
		398	/* very slow, but rare, check */
		399	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		400	croak ("Coro::State object required");
		401	}
		402
		403	mg = CORO_MAGIC_state (coro);
		404	return (struct coro *)mg->mg_ptr;
		405	}
		406
		407	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
252		408
253	/* the next two functions merely cache the padlists */	409	/* the next two functions merely cache the padlists */
254	static void	410	static void
255	get_padlist (CV *cv)	411	get_padlist (pTHX_ CV *cv)
256	{	412	{
257	MAGIC *mg = CORO_MAGIC (cv);	413	MAGIC *mg = CORO_MAGIC_cv (cv);
258	AV *av;	414	AV *av;
259		415
260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	416	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	417	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262	else	418	else
263	{	419	{
264	#if 0	420	#if CORO_PREFER_PERL_FUNCTIONS
265	/* this is probably cleaner, but also slower? */	421	/* this is probably cleaner, but also slower? */
266	CV *cp = Perl_cv_clone (cv);	422	CV *cp = Perl_cv_clone (cv);
267	CvPADLIST (cv) = CvPADLIST (cp);	423	CvPADLIST (cv) = CvPADLIST (cp);
268	CvPADLIST (cp) = 0;	424	CvPADLIST (cp) = 0;
269	SvREFCNT_dec (cp);	425	SvREFCNT_dec (cp);
270	#else	426	#else
271	CvPADLIST (cv) = coro_clone_padlist (cv);	427	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272	#endif	428	#endif
273	}	429	}
274	}	430	}
275		431
276	static void	432	static void
277	put_padlist (CV *cv)	433	put_padlist (pTHX_ CV *cv)
278	{	434	{
279	MAGIC *mg = CORO_MAGIC (cv);	435	MAGIC *mg = CORO_MAGIC_cv (cv);
280	AV *av;	436	AV *av;
281		437
282	if (!mg)	438	if (expect_false (!mg))
283	{	439	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
284	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
285	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
286	mg->mg_virtual = &vtbl_coro;
287	mg->mg_obj = (SV *)newAV ();
288	}
289		440
290	av = (AV *)mg->mg_obj;	441	av = (AV *)mg->mg_obj;
291		442
292	if (AvFILLp (av) >= AvMAX (av))	443	if (expect_false (AvFILLp (av) >= AvMAX (av)))
293	av_extend (av, AvMAX (av) + 1);	444	av_extend (av, AvMAX (av) + 1);
294		445
295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	446	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296	}	447	}
297		448
298	#define SB do {	449	/ load & save, init *****************************************************/
299	#define SE } while (0)
300
301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
302		450
303	static void	451	static void
304	load_perl (Coro__State c)	452	load_perl (pTHX_ Coro__State c)
305	{	453	{
		454	perl_slots *slot = c->slot;
		455	c->slot = 0;
		456
		457	PL_mainstack = c->mainstack;
		458
		459	GvSV (PL_defgv) = slot->defsv;
		460	GvAV (PL_defgv) = slot->defav;
		461	GvSV (PL_errgv) = slot->errsv;
		462	GvSV (irsgv) = slot->irsgv;
		463
306	#define VAR(name,type) PL_ ## name = c->name;	464	#define VAR(name,type) PL_ ## name = slot->name;
307	# include "state.h"	465	# include "state.h"
308	#undef VAR	466	#undef VAR
309
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
313	if (c->irssv)
314	{
315	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
316	SvREFCNT_dec (c->irssv);
317	else
318	{
319	REPLACE_SV (PL_rs, c->irssv);
320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321	sv_setsv (c->irssv_sv, PL_rs);
322	}
323	}
324		467
325	{	468	{
326	dSP;	469	dSP;
		470
327	CV *cv;	471	CV *cv;
328		472
329	/* now do the ugly restore mess */	473	/* now do the ugly restore mess */
330	while ((cv = (CV *)POPs))	474	while (expect_true (cv = (CV *)POPs))
331	{	475	{
332	put_padlist (cv); /* mark this padlist as available */	476	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvDEPTH (cv) = PTR2IV (POPs);	477	CvDEPTH (cv) = PTR2IV (POPs);
334	CvPADLIST (cv) = (AV *)POPs;	478	CvPADLIST (cv) = (AV *)POPs;
335	}	479	}
336		480
337	PUTBACK;	481	PUTBACK;
338	}	482	}
339	}	483	}
340		484
341	static void	485	static void
342	save_perl (Coro__State c)	486	save_perl (pTHX_ Coro__State c)
343	{	487	{
344	{	488	{
345	dSP;	489	dSP;
346	I32 cxix = cxstack_ix;	490	I32 cxix = cxstack_ix;
347	PERL_CONTEXT *ccstk = cxstack;	491	PERL_CONTEXT *ccstk = cxstack;
…		…
350	/*	494	/*
351	* the worst thing you can imagine happens first - we have to save	495	* the worst thing you can imagine happens first - we have to save
352	* (and reinitialize) all cv's in the whole callchain :(	496	* (and reinitialize) all cv's in the whole callchain :(
353	*/	497	*/
354		498
355	EXTEND (SP, 3 + 1);
356	PUSHs (Nullsv);	499	XPUSHs (Nullsv);
357	/* this loop was inspired by pp_caller */	500	/* this loop was inspired by pp_caller */
358	for (;;)	501	for (;;)
359	{	502	{
360	while (cxix >= 0)	503	while (expect_true (cxix >= 0))
361	{	504	{
362	PERL_CONTEXT *cx = &ccstk[cxix--];	505	PERL_CONTEXT *cx = &ccstk[cxix--];
363		506
364	if (CxTYPE (cx) == CXt_SUB)	507	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
365	{	508	{
366	CV *cv = cx->blk_sub.cv;	509	CV *cv = cx->blk_sub.cv;
367		510
368	if (CvDEPTH (cv))	511	if (expect_true (CvDEPTH (cv)))
369	{	512	{
370	EXTEND (SP, 3);	513	EXTEND (SP, 3);
371	PUSHs ((SV *)CvPADLIST (cv));	514	PUSHs ((SV *)CvPADLIST (cv));
372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	515	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	516	PUSHs ((SV *)cv);
374		517
375	CvDEPTH (cv) = 0;	518	CvDEPTH (cv) = 0;
376	get_padlist (cv);	519	get_padlist (aTHX_ cv);
377	}	520	}
378	}	521	}
379	}	522	}
380		523
381	if (top_si->si_type == PERLSI_MAIN)	524	if (expect_true (top_si->si_type == PERLSI_MAIN))
382	break;	525	break;
383		526
384	top_si = top_si->si_prev;	527	top_si = top_si->si_prev;
385	ccstk = top_si->si_cxstack;	528	ccstk = top_si->si_cxstack;
386	cxix = top_si->si_cxix;	529	cxix = top_si->si_cxix;
387	}	530	}
388		531
389	PUTBACK;	532	PUTBACK;
390	}	533	}
391		534
392	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	535	/* allocate some space on the context stack for our purposes */
393	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	536	/* we manually unroll here, as usually 2 slots is enough */
394	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	537	if (SLOT_COUNT >= 1) CXINC;
395	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	538	if (SLOT_COUNT >= 2) CXINC;
		539	if (SLOT_COUNT >= 3) CXINC;
		540	{
		541	int i;
		542	for (i = 3; i < SLOT_COUNT; ++i)
		543	CXINC;
		544	}
		545	cxstack_ix -= SLOT_COUNT; /* undo allocation */
396		546
		547	c->mainstack = PL_mainstack;
		548
		549	{
		550	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		551
		552	slot->defav = GvAV (PL_defgv);
		553	slot->defsv = DEFSV;
		554	slot->errsv = ERRSV;
		555	slot->irsgv = GvSV (irsgv);
		556
397	#define VAR(name,type)c->name = PL_ ## name;	557	#define VAR(name,type) slot->name = PL_ ## name;
398	# include "state.h"	558	# include "state.h"
399	#undef VAR	559	#undef VAR
		560	}
400	}	561	}
401		562
402	/*	563	/*
403	* allocate various perl stacks. This is an exact copy	564	* allocate various perl stacks. This is an exact copy
404	* of perl.c:init_stacks, except that it uses less memory	565	* of perl.c:init_stacks, except that it uses less memory
405	* on the (sometimes correct) assumption that coroutines do	566	* on the (sometimes correct) assumption that coroutines do
406	* not usually need a lot of stackspace.	567	* not usually need a lot of stackspace.
407	*/	568	*/
408	#if USE_PERL_INIT_STACKS	569	#if CORO_PREFER_PERL_FUNCTIONS
409	# define coro_init_stacks init_stacks	570	# define coro_init_stacks init_stacks
410	#else	571	#else
411
412	static void	572	static void
413	coro_init_stacks ()	573	coro_init_stacks (pTHX)
414	{	574	{
415	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	575	PL_curstackinfo = new_stackinfo(32, 8);
416	PL_curstackinfo->si_type = PERLSI_MAIN;	576	PL_curstackinfo->si_type = PERLSI_MAIN;
417	PL_curstack = PL_curstackinfo->si_stack;	577	PL_curstack = PL_curstackinfo->si_stack;
418	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	578	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
419		579
420	PL_stack_base = AvARRAY(PL_curstack);	580	PL_stack_base = AvARRAY(PL_curstack);
421	PL_stack_sp = PL_stack_base;	581	PL_stack_sp = PL_stack_base;
422	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	582	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
423		583
424	New(50,PL_tmps_stack,128,SV*);	584	New(50,PL_tmps_stack,32,SV*);
425	PL_tmps_floor = -1;	585	PL_tmps_floor = -1;
426	PL_tmps_ix = -1;	586	PL_tmps_ix = -1;
427	PL_tmps_max = 128;	587	PL_tmps_max = 32;
428		588
429	New(54,PL_markstack,32,I32);	589	New(54,PL_markstack,16,I32);
430	PL_markstack_ptr = PL_markstack;	590	PL_markstack_ptr = PL_markstack;
431	PL_markstack_max = PL_markstack + 32;	591	PL_markstack_max = PL_markstack + 16;
432		592
433	#ifdef SET_MARK_OFFSET	593	#ifdef SET_MARK_OFFSET
434	SET_MARK_OFFSET;	594	SET_MARK_OFFSET;
435	#endif	595	#endif
436		596
437	New(54,PL_scopestack,32,I32);	597	New(54,PL_scopestack,8,I32);
438	PL_scopestack_ix = 0;	598	PL_scopestack_ix = 0;
439	PL_scopestack_max = 32;	599	PL_scopestack_max = 8;
440		600
441	New(54,PL_savestack,64,ANY);	601	New(54,PL_savestack,24,ANY);
442	PL_savestack_ix = 0;	602	PL_savestack_ix = 0;
443	PL_savestack_max = 64;	603	PL_savestack_max = 24;
444		604
445	#if !PERL_VERSION_ATLEAST (5,9,0)	605	#if !PERL_VERSION_ATLEAST (5,10,0)
446	New(54,PL_retstack,16,OP*);	606	New(54,PL_retstack,4,OP*);
447	PL_retstack_ix = 0;	607	PL_retstack_ix = 0;
448	PL_retstack_max = 16;	608	PL_retstack_max = 4;
449	#endif	609	#endif
450	}	610	}
		611	#endif
451		612
452	/*	613	/*
453	* destroy the stacks, the callchain etc...	614	* destroy the stacks, the callchain etc...
454	*/	615	*/
455	static void	616	static void
456	coro_destroy_stacks ()	617	coro_destroy_stacks (pTHX)
457	{	618	{
458	if (!IN_DESTRUCT)
459	{
460	/* restore all saved variables and stuff */
461	LEAVE_SCOPE (0);
462	assert (PL_tmps_floor == -1);
463
464	/* free all temporaries */
465	FREETMPS;
466	assert (PL_tmps_ix == -1);
467
468	POPSTACK_TO (PL_mainstack);
469	}
470
471	while (PL_curstackinfo->si_next)	619	while (PL_curstackinfo->si_next)
472	PL_curstackinfo = PL_curstackinfo->si_next;	620	PL_curstackinfo = PL_curstackinfo->si_next;
473		621
474	while (PL_curstackinfo)	622	while (PL_curstackinfo)
475	{	623	{
…		…
485		633
486	Safefree (PL_tmps_stack);	634	Safefree (PL_tmps_stack);
487	Safefree (PL_markstack);	635	Safefree (PL_markstack);
488	Safefree (PL_scopestack);	636	Safefree (PL_scopestack);
489	Safefree (PL_savestack);	637	Safefree (PL_savestack);
490	#if !PERL_VERSION_ATLEAST (5,9,0)	638	#if !PERL_VERSION_ATLEAST (5,10,0)
491	Safefree (PL_retstack);	639	Safefree (PL_retstack);
492	#endif	640	#endif
493	}	641	}
		642
		643	static size_t
		644	coro_rss (pTHX_ struct coro *coro)
		645	{
		646	size_t rss = sizeof (*coro);
		647
		648	if (coro->mainstack)
		649	{
		650	perl_slots tmp_slot;
		651	perl_slots *slot;
		652
		653	if (coro->flags & CF_RUNNING)
		654	{
		655	slot = &tmp_slot;
		656
		657	#define VAR(name,type) slot->name = PL_ ## name;
		658	# include "state.h"
		659	#undef VAR
		660	}
		661	else
		662	slot = coro->slot;
		663
		664	rss += sizeof (slot->curstackinfo);
		665	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		666	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		667	rss += slot->tmps_max * sizeof (SV *);
		668	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		669	rss += slot->scopestack_max * sizeof (I32);
		670	rss += slot->savestack_max * sizeof (ANY);
		671
		672	#if !PERL_VERSION_ATLEAST (5,10,0)
		673	rss += slot->retstack_max * sizeof (OP *);
494	#endif	674	#endif
		675	}
		676
		677	return rss;
		678	}
		679
		680	/ coroutine stack handling **********************************************/
		681
		682	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		683	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		684
		685	/*
		686	* This overrides the default magic get method of %SIG elements.
		687	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		688	* and instead of tryign to save and restore the hash elements, we just provide
		689	* readback here.
		690	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		691	* not expecting this to actually change the hook. This is a potential problem
		692	* when a schedule happens then, but we ignore this.
		693	*/
		694	static int
		695	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		696	{
		697	const char *s = MgPV_nolen_const (mg);
		698
		699	if (*s == '_')
		700	{
		701	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		702	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		703	}
		704
		705	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		706	}
		707
		708	static int
		709	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		710	{
		711	const char *s = MgPV_nolen_const (mg);
		712
		713	if (*s == '_')
		714	{
		715	SV **svp = 0;
		716
		717	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		718	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		719
		720	if (svp)
		721	{
		722	SV old = svp;
		723	*svp = newSVsv (sv);
		724	SvREFCNT_dec (old);
		725	return 0;
		726	}
		727	}
		728
		729	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		730	}
495		731
496	static void	732	static void
497	setup_coro (struct coro *coro)	733	coro_setup (pTHX_ struct coro *coro)
498	{	734	{
499	/*	735	/*
500	* emulate part of the perl startup here.	736	* emulate part of the perl startup here.
501	*/	737	*/
502
503	coro_init_stacks ();	738	coro_init_stacks (aTHX);
504		739
		740	PL_runops = RUNOPS_DEFAULT;
505	PL_curcop = &PL_compiling;	741	PL_curcop = &PL_compiling;
506	PL_in_eval = EVAL_NULL;	742	PL_in_eval = EVAL_NULL;
		743	PL_comppad = 0;
507	PL_curpm = 0;	744	PL_curpm = 0;
		745	PL_curpad = 0;
508	PL_localizing = 0;	746	PL_localizing = 0;
509	PL_dirty = 0;	747	PL_dirty = 0;
510	PL_restartop = 0;	748	PL_restartop = 0;
		749	#if PERL_VERSION_ATLEAST (5,10,0)
		750	PL_parser = 0;
		751	#endif
		752
		753	/* recreate the die/warn hooks */
		754	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		755	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		756
		757	GvSV (PL_defgv) = newSV (0);
		758	GvAV (PL_defgv) = coro->args; coro->args = 0;
		759	GvSV (PL_errgv) = newSV (0);
		760	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		761	PL_rs = newSVsv (GvSV (irsgv));
		762	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
511		763
512	{	764	{
513	dSP;	765	dSP;
514	LOGOP myop;	766	LOGOP myop;
515		767
516	SvREFCNT_dec (GvAV (PL_defgv));
517	GvAV (PL_defgv) = coro->args; coro->args = 0;
518
519	Zero (&myop, 1, LOGOP);	768	Zero (&myop, 1, LOGOP);
520	myop.op_next = Nullop;	769	myop.op_next = Nullop;
521	myop.op_flags = OPf_WANT_VOID;	770	myop.op_flags = OPf_WANT_VOID;
522		771
523	PUSHMARK (SP);	772	PUSHMARK (SP);
524	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	773	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
525	PUTBACK;	774	PUTBACK;
526	PL_op = (OP *)&myop;	775	PL_op = (OP *)&myop;
527	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	776	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
528	SPAGAIN;	777	SPAGAIN;
529	}	778	}
530		779
531	ENTER; /* necessary e.g. for dounwind */	780	/* this newly created coroutine might be run on an existing cctx which most
		781	* likely was suspended in set_stacklevel, called from entersub.
		782	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		783	* so we ENTER here for symmetry
		784	*/
		785	ENTER;
532	}	786	}
533		787
534	static void	788	static void
		789	coro_destroy (pTHX_ struct coro *coro)
		790	{
		791	if (!IN_DESTRUCT)
		792	{
		793	/* restore all saved variables and stuff */
		794	LEAVE_SCOPE (0);
		795	assert (PL_tmps_floor == -1);
		796
		797	/* free all temporaries */
		798	FREETMPS;
		799	assert (PL_tmps_ix == -1);
		800
		801	/* unwind all extra stacks */
		802	POPSTACK_TO (PL_mainstack);
		803
		804	/* unwind main stack */
		805	dounwind (-1);
		806	}
		807
		808	SvREFCNT_dec (GvSV (PL_defgv));
		809	SvREFCNT_dec (GvAV (PL_defgv));
		810	SvREFCNT_dec (GvSV (PL_errgv));
		811	SvREFCNT_dec (PL_defoutgv);
		812	SvREFCNT_dec (PL_rs);
		813	SvREFCNT_dec (GvSV (irsgv));
		814
		815	SvREFCNT_dec (PL_diehook);
		816	SvREFCNT_dec (PL_warnhook);
		817
		818	SvREFCNT_dec (coro->saved_deffh);
		819	SvREFCNT_dec (coro->throw);
		820
		821	coro_destroy_stacks (aTHX);
		822	}
		823
		824	static void
535	free_coro_mortal ()	825	free_coro_mortal (pTHX)
536	{	826	{
537	if (coro_mortal)	827	if (expect_true (coro_mortal))
538	{	828	{
539	SvREFCNT_dec (coro_mortal);	829	SvREFCNT_dec (coro_mortal);
540	coro_mortal = 0;	830	coro_mortal = 0;
541	}	831	}
542	}	832	}
543		833
		834	static int
		835	runops_trace (pTHX)
		836	{
		837	COP *oldcop = 0;
		838	int oldcxix = -2;
		839	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		840	coro_cctx *cctx = coro->cctx;
		841
		842	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		843	{
		844	PERL_ASYNC_CHECK ();
		845
		846	if (cctx->flags & CC_TRACE_ALL)
		847	{
		848	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		849	{
		850	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		851	SV bot, top;
		852	AV av = newAV (); / return values */
		853	SV **cb;
		854	dSP;
		855
		856	GV *gv = CvGV (cx->blk_sub.cv);
		857	SV *fullname = sv_2mortal (newSV (0));
		858	if (isGV (gv))
		859	gv_efullname3 (fullname, gv, 0);
		860
		861	bot = PL_stack_base + cx->blk_oldsp + 1;
		862	top = cx->blk_gimme == G_ARRAY ? SP + 1
		863	: cx->blk_gimme == G_SCALAR ? bot + 1
		864	: bot;
		865
		866	av_extend (av, top - bot);
		867	while (bot < top)
		868	av_push (av, SvREFCNT_inc (*bot++));
		869
		870	PL_runops = RUNOPS_DEFAULT;
		871	ENTER;
		872	SAVETMPS;
		873	EXTEND (SP, 3);
		874	PUSHMARK (SP);
		875	PUSHs (&PL_sv_no);
		876	PUSHs (fullname);
		877	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		878	PUTBACK;
		879	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		880	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		881	SPAGAIN;
		882	FREETMPS;
		883	LEAVE;
		884	PL_runops = runops_trace;
		885	}
		886
		887	if (oldcop != PL_curcop)
		888	{
		889	oldcop = PL_curcop;
		890
		891	if (PL_curcop != &PL_compiling)
		892	{
		893	SV **cb;
		894
		895	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		896	{
		897	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		898
		899	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		900	{
		901	runops_proc_t old_runops = PL_runops;
		902	dSP;
		903	GV *gv = CvGV (cx->blk_sub.cv);
		904	SV *fullname = sv_2mortal (newSV (0));
		905
		906	if (isGV (gv))
		907	gv_efullname3 (fullname, gv, 0);
		908
		909	PL_runops = RUNOPS_DEFAULT;
		910	ENTER;
		911	SAVETMPS;
		912	EXTEND (SP, 3);
		913	PUSHMARK (SP);
		914	PUSHs (&PL_sv_yes);
		915	PUSHs (fullname);
		916	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		917	PUTBACK;
		918	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		919	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		920	SPAGAIN;
		921	FREETMPS;
		922	LEAVE;
		923	PL_runops = runops_trace;
		924	}
		925
		926	oldcxix = cxstack_ix;
		927	}
		928
		929	if (cctx->flags & CC_TRACE_LINE)
		930	{
		931	dSP;
		932
		933	PL_runops = RUNOPS_DEFAULT;
		934	ENTER;
		935	SAVETMPS;
		936	EXTEND (SP, 3);
		937	PL_runops = RUNOPS_DEFAULT;
		938	PUSHMARK (SP);
		939	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		940	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		941	PUTBACK;
		942	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		943	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		944	SPAGAIN;
		945	FREETMPS;
		946	LEAVE;
		947	PL_runops = runops_trace;
		948	}
		949	}
		950	}
		951	}
		952	}
		953
		954	TAINT_NOT;
		955	return 0;
		956	}
		957
544	/* inject a fake call to Coro::State::_cctx_init into the execution */	958	/* inject a fake call to Coro::State::_cctx_init into the execution */
		959	/* _cctx_init should be careful, as it could be called at almost any time */
		960	/* during execution of a perl program */
545	static void NOINLINE	961	static void NOINLINE
546	prepare_cctx (coro_cctx *cctx)	962	cctx_prepare (pTHX_ coro_cctx *cctx)
547	{	963	{
548	dSP;	964	dSP;
549	LOGOP myop;	965	LOGOP myop;
		966
		967	PL_top_env = &PL_start_env;
		968
		969	if (cctx->flags & CC_TRACE)
		970	PL_runops = runops_trace;
550		971
551	Zero (&myop, 1, LOGOP);	972	Zero (&myop, 1, LOGOP);
552	myop.op_next = PL_op;	973	myop.op_next = PL_op;
553	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	974	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
554		975
…		…
560	PL_op = (OP *)&myop;	981	PL_op = (OP *)&myop;
561	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	982	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
562	SPAGAIN;	983	SPAGAIN;
563	}	984	}
564		985
		986	/*
		987	* this is a _very_ stripped down perl interpreter ;)
		988	*/
565	static void	989	static void
566	coro_run (void *arg)	990	cctx_run (void *arg)
567	{	991	{
		992	dTHX;
		993
568	/* coro_run is the alternative tail of transfer(), so unlock here. */	994	/* cctx_run is the alternative tail of transfer(), so unlock here. */
569	UNLOCK;	995	UNLOCK;
570		996
571	/*	997	/* we now skip the entersub that lead to transfer() */
572	* this is a _very_ stripped down perl interpreter ;)	998	PL_op = PL_op->op_next;
573	*/
574	PL_top_env = &PL_start_env;
575		999
576	/* inject call to cctx_init */	1000	/* inject a fake subroutine call to cctx_init */
577	prepare_cctx ((coro_cctx *)arg);	1001	cctx_prepare (aTHX_ (coro_cctx *)arg);
578		1002
579	/* somebody will hit me for both perl_run and PL_restartop */	1003	/* somebody or something will hit me for both perl_run and PL_restartop */
580	PL_restartop = PL_op;	1004	PL_restartop = PL_op;
581	perl_run (PL_curinterp);	1005	perl_run (PL_curinterp);
582		1006
583	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	1007	/*
584	abort ();	1008	* If perl-run returns we assume exit() was being called or the coro
		1009	* fell off the end, which seems to be the only valid (non-bug)
		1010	* reason for perl_run to return. We try to exit by jumping to the
		1011	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1012	* coroutine as Coro has no such concept
		1013	*/
		1014	PL_top_env = main_top_env;
		1015	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
585	}	1016	}
586		1017
587	static coro_cctx *	1018	static coro_cctx *
588	cctx_new ()	1019	cctx_new ()
589	{	1020	{
590	coro_cctx *cctx;	1021	coro_cctx *cctx;
		1022	void *stack_start;
		1023	size_t stack_size;
591		1024
592	++cctx_count;	1025	++cctx_count;
593		1026
594	Newz (0, cctx, 1, coro_cctx);	1027	Newz (0, cctx, 1, coro_cctx);
595		1028
596	#if HAVE_MMAP	1029	#if HAVE_MMAP
597
598	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	1030	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
599	/* mmap supposedly does allocate-on-write for us */	1031	/* mmap supposedly does allocate-on-write for us */
600	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1032	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
601		1033
602	if (cctx->sptr == (void *)-1)	1034	if (cctx->sptr != (void *)-1)
603	{
604	perror ("FATAL: unable to mmap stack for coroutine");
605	_exit (EXIT_FAILURE);
606	}	1035	{
607
608	# if STACKGUARD	1036	# if CORO_STACKGUARD
609	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	1037	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
610	# endif	1038	# endif
		1039	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		1040	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		1041	cctx->flags \|= CC_MAPPED;
		1042	}
		1043	else
		1044	#endif
		1045	{
		1046	cctx->ssize = coro_stacksize * (long)sizeof (long);
		1047	New (0, cctx->sptr, coro_stacksize, long);
611		1048
612	#else
613
614	cctx->ssize = STACKSIZE * (long)sizeof (long);
615	New (0, cctx->sptr, STACKSIZE, long);
616
617	if (!cctx->sptr)	1049	if (!cctx->sptr)
618	{	1050	{
619	perror ("FATAL: unable to malloc stack for coroutine");	1051	perror ("FATAL: unable to allocate stack for coroutine");
620	_exit (EXIT_FAILURE);	1052	_exit (EXIT_FAILURE);
621	}	1053	}
622		1054
623	#endif	1055	stack_start = cctx->sptr;
		1056	stack_size = cctx->ssize;
		1057	}
624		1058
625	#if USE_VALGRIND	1059	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
626	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1060	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
627	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
628	cctx->ssize + (char *)cctx->sptr
629	);
630	#endif
631
632	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
633		1061
634	return cctx;	1062	return cctx;
635	}	1063	}
636		1064
637	static void	1065	static void
…		…
640	if (!cctx)	1068	if (!cctx)
641	return;	1069	return;
642		1070
643	--cctx_count;	1071	--cctx_count;
644		1072
645	#if USE_VALGRIND	1073	#if CORO_USE_VALGRIND
646	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1074	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
647	#endif	1075	#endif
648		1076
649	#if HAVE_MMAP	1077	#if HAVE_MMAP
		1078	if (cctx->flags & CC_MAPPED)
650	munmap (cctx->sptr, cctx->ssize);	1079	munmap (cctx->sptr, cctx->ssize);
651	#else	1080	else
		1081	#endif
652	Safefree (cctx->sptr);	1082	Safefree (cctx->sptr);
653	#endif
654		1083
655	Safefree (cctx);	1084	Safefree (cctx);
656	}	1085	}
657		1086
		1087	/* wether this cctx should be destructed */
		1088	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1089
658	static coro_cctx *	1090	static coro_cctx *
659	cctx_get ()	1091	cctx_get (pTHX)
660	{	1092	{
661	coro_cctx *cctx;	1093	while (expect_true (cctx_first))
662
663	if (cctx_first)
664	{	1094	{
665	cctx = cctx_first;	1095	coro_cctx *cctx = cctx_first;
666	cctx_first = cctx->next;	1096	cctx_first = cctx->next;
667	--cctx_idle;	1097	--cctx_idle;
668	}	1098
669	else	1099	if (expect_true (!CCTX_EXPIRED (cctx)))
670	{	1100	return cctx;
671	cctx = cctx_new ();	1101
672	PL_op = PL_op->op_next;	1102	cctx_destroy (cctx);
673	}	1103	}
674		1104
675	return cctx;	1105	return cctx_new ();
676	}	1106	}
677		1107
678	static void	1108	static void
679	cctx_put (coro_cctx *cctx)	1109	cctx_put (coro_cctx *cctx)
680	{	1110	{
681	/* free another cctx if overlimit */	1111	/* free another cctx if overlimit */
682	if (cctx_idle >= MAX_IDLE_CCTX)	1112	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
683	{	1113	{
684	coro_cctx *first = cctx_first;	1114	coro_cctx *first = cctx_first;
685	cctx_first = first->next;	1115	cctx_first = first->next;
686	--cctx_idle;	1116	--cctx_idle;
687		1117
688	assert (!first->inuse);
689	cctx_destroy (first);	1118	cctx_destroy (first);
690	}	1119	}
691		1120
692	++cctx_idle;	1121	++cctx_idle;
693	cctx->next = cctx_first;	1122	cctx->next = cctx_first;
694	cctx_first = cctx;	1123	cctx_first = cctx;
695	}	1124	}
696		1125
697	/* never call directly, always through the coro_state_transfer global variable */	1126	/ coroutine switching ***************************************************/
		1127
		1128	static void
		1129	transfer_check (pTHX_ struct coro prev, struct coro next)
		1130	{
		1131	if (expect_true (prev != next))
		1132	{
		1133	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1134	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1135
		1136	if (expect_false (next->flags & CF_RUNNING))
		1137	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1138
		1139	if (expect_false (next->flags & CF_DESTROYED))
		1140	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1141
		1142	#if !PERL_VERSION_ATLEAST (5,10,0)
		1143	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1144	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1145	#endif
		1146	}
		1147	}
		1148
		1149	/* always use the TRANSFER macro */
698	static void NOINLINE	1150	static void NOINLINE
699	transfer (struct coro prev, struct coro next)	1151	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
700	{	1152	{
701	dSTACKLEVEL;	1153	dSTACKLEVEL;
		1154	static volatile int has_throw;
702		1155
703	/* sometimes transfer is only called to set idle_sp */	1156	/* sometimes transfer is only called to set idle_sp */
704	if (!next)	1157	if (expect_false (!next))
705	{	1158	{
706	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1159	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
707	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	1160	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
708	}	1161	}
709	else if (prev != next)	1162	else if (expect_true (prev != next))
710	{	1163	{
711	coro_cctx *prev__cctx;	1164	coro_cctx *prev__cctx;
712		1165
713	if (prev->flags & CF_NEW)	1166	if (expect_false (prev->flags & CF_NEW))
714	{	1167	{
715	/* create a new empty context */	1168	/* create a new empty context */
716	Newz (0, prev->cctx, 1, coro_cctx);	1169	Newz (0, prev->cctx, 1, coro_cctx);
717	prev->cctx->inuse = 1;
718	prev->flags &= ~CF_NEW;	1170	prev->flags &= ~CF_NEW;
719	prev->flags \|= CF_RUNNING;	1171	prev->flags \|= CF_RUNNING;
720	}	1172	}
721		1173
722	/TODO: must not croak here /
723	if (!prev->flags & CF_RUNNING)
724	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
725
726	if (next->flags & CF_RUNNING)
727	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
728
729	prev->flags &= ~CF_RUNNING;	1174	prev->flags &= ~CF_RUNNING;
730	next->flags \|= CF_RUNNING;	1175	next->flags \|= CF_RUNNING;
731		1176
732	LOCK;	1177	LOCK;
733		1178
		1179	/* first get rid of the old state */
		1180	save_perl (aTHX_ prev);
		1181
734	if (next->flags & CF_NEW)	1182	if (expect_false (next->flags & CF_NEW))
735	{	1183	{
736	/* need to start coroutine */	1184	/* need to start coroutine */
737	next->flags &= ~CF_NEW;	1185	next->flags &= ~CF_NEW;
738	/* first get rid of the old state */
739	save_perl (prev);
740	/* setup coroutine call */	1186	/* setup coroutine call */
741	setup_coro (next);	1187	coro_setup (aTHX_ next);
742	/* need a new stack */
743	assert (!next->cctx);
744	}	1188	}
745	else	1189	else
746	{
747	/* coroutine already started */
748	save_perl (prev);
749	load_perl (next);	1190	load_perl (aTHX_ next);
750	}
751		1191
752	prev__cctx = prev->cctx;	1192	prev__cctx = prev->cctx;
753		1193
754	/* possibly "free" the cctx */	1194	/* possibly "free" the cctx */
		1195	if (expect_true (
755	if (prev__cctx->idle_sp == STACKLEVEL)	1196	prev__cctx->idle_sp == STACKLEVEL
		1197	&& !(prev__cctx->flags & CC_TRACE)
		1198	&& !force_cctx
		1199	))
756	{	1200	{
757	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1201	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
758	assert (PL_top_env == prev__cctx->top_env);	1202	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
759		1203
760	prev->cctx = 0;	1204	prev->cctx = 0;
761		1205
		1206	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1207	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1208	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1209	if (!next->cctx)
		1210	next->cctx = cctx_get (aTHX);
		1211
762	cctx_put (prev__cctx);	1212	cctx_put (prev__cctx);
763	prev__cctx->inuse = 0;
764	}	1213	}
765		1214
		1215	++next->usecount;
		1216
766	if (!next->cctx)	1217	if (expect_true (!next->cctx))
767	{
768	next->cctx = cctx_get ();	1218	next->cctx = cctx_get (aTHX);
769	assert (!next->cctx->inuse);
770	next->cctx->inuse = 1;
771	}
772		1219
		1220	has_throw = !!next->throw;
		1221
773	if (prev__cctx != next->cctx)	1222	if (expect_false (prev__cctx != next->cctx))
774	{	1223	{
775	prev__cctx->top_env = PL_top_env;	1224	prev__cctx->top_env = PL_top_env;
776	PL_top_env = next->cctx->top_env;	1225	PL_top_env = next->cctx->top_env;
777	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1226	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
778	}	1227	}
779		1228
780	free_coro_mortal ();	1229	free_coro_mortal (aTHX);
781
782	UNLOCK;	1230	UNLOCK;
		1231
		1232	if (expect_false (has_throw))
		1233	{
		1234	struct coro *coro = SvSTATE (coro_current);
		1235
		1236	if (coro->throw)
		1237	{
		1238	SV *exception = coro->throw;
		1239	coro->throw = 0;
		1240	sv_setsv (ERRSV, exception);
		1241	croak (0);
		1242	}
		1243	}
783	}	1244	}
784	}	1245	}
785		1246
786	struct transfer_args	1247	struct transfer_args
787	{	1248	{
788	struct coro prev, next;	1249	struct coro prev, next;
789	};	1250	};
790		1251
		1252	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
791	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1253	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
792		1254
		1255	/ high level stuff ******************************************************/
		1256
793	static void	1257	static int
794	coro_state_destroy (struct coro *coro)	1258	coro_state_destroy (pTHX_ struct coro *coro)
795	{	1259	{
796	if (coro->refcnt--)	1260	if (coro->flags & CF_DESTROYED)
797	return;	1261	return 0;
		1262
		1263	coro->flags \|= CF_DESTROYED;
		1264
		1265	if (coro->flags & CF_READY)
		1266	{
		1267	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1268	/* alternative: look through all ready queues and remove the coro */
		1269	LOCK;
		1270	--coro_nready;
		1271	UNLOCK;
		1272	}
		1273	else
		1274	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
798		1275
799	if (coro->mainstack && coro->mainstack != main_mainstack)	1276	if (coro->mainstack && coro->mainstack != main_mainstack)
800	{	1277	{
801	struct coro temp;	1278	struct coro temp;
802	Zero (&temp, 1, struct coro);
803	temp.save = CORO_SAVE_ALL;
804		1279
805	if (coro->flags & CF_RUNNING)	1280	if (coro->flags & CF_RUNNING)
806	croak ("FATAL: tried to destroy currently running coroutine");	1281	croak ("FATAL: tried to destroy currently running coroutine");
807		1282
808	save_perl (&temp);	1283	save_perl (aTHX_ &temp);
809	load_perl (coro);	1284	load_perl (aTHX_ coro);
810		1285
811	coro_destroy_stacks ();	1286	coro_destroy (aTHX_ coro);
812		1287
813	load_perl (&temp); /* this will get rid of defsv etc.. */	1288	load_perl (aTHX_ &temp);
814		1289
815	coro->mainstack = 0;	1290	coro->slot = 0;
816	}	1291	}
817		1292
818	cctx_destroy (coro->cctx);	1293	cctx_destroy (coro->cctx);
819	SvREFCNT_dec (coro->args);	1294	SvREFCNT_dec (coro->args);
820	Safefree (coro);	1295
		1296	if (coro->next) coro->next->prev = coro->prev;
		1297	if (coro->prev) coro->prev->next = coro->next;
		1298	if (coro == coro_first) coro_first = coro->next;
		1299
		1300	return 1;
821	}	1301	}
822		1302
823	static int	1303	static int
824	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1304	coro_state_free (pTHX_ SV sv, MAGIC mg)
825	{	1305	{
826	struct coro coro = (struct coro )mg->mg_ptr;	1306	struct coro coro = (struct coro )mg->mg_ptr;
827	mg->mg_ptr = 0;	1307	mg->mg_ptr = 0;
828		1308
		1309	coro->hv = 0;
		1310
		1311	if (--coro->refcnt < 0)
		1312	{
829	coro_state_destroy (coro);	1313	coro_state_destroy (aTHX_ coro);
		1314	Safefree (coro);
		1315	}
830		1316
831	return 0;	1317	return 0;
832	}	1318	}
833		1319
834	static int	1320	static int
…		…
841	return 0;	1327	return 0;
842	}	1328	}
843		1329
844	static MGVTBL coro_state_vtbl = {	1330	static MGVTBL coro_state_vtbl = {
845	0, 0, 0, 0,	1331	0, 0, 0, 0,
846	coro_state_clear,	1332	coro_state_free,
847	0,	1333	0,
848	#ifdef MGf_DUP	1334	#ifdef MGf_DUP
849	coro_state_dup,	1335	coro_state_dup,
850	#else	1336	#else
851	# define MGf_DUP 0	1337	# define MGf_DUP 0
852	#endif	1338	#endif
853	};	1339	};
854		1340
855	static struct coro *
856	SvSTATE (SV *coro)
857	{
858	HV *stash;
859	MAGIC *mg;
860
861	if (SvROK (coro))
862	coro = SvRV (coro);
863
864	stash = SvSTASH (coro);
865	if (stash != coro_stash && stash != coro_state_stash)
866	{
867	/* very slow, but rare, check */
868	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
869	croak ("Coro::State object required");
870	}
871
872	mg = SvMAGIC (coro);
873	assert (mg->mg_type == PERL_MAGIC_ext);
874	return (struct coro *)mg->mg_ptr;
875	}
876
877	static void	1341	static void
878	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1342	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
879	{	1343	{
880	ta->prev = SvSTATE (prev_sv);	1344	ta->prev = SvSTATE (prev_sv);
881	ta->next = SvSTATE (next_sv);	1345	ta->next = SvSTATE (next_sv);
		1346	TRANSFER_CHECK (*ta);
882	}	1347	}
883		1348
884	static void	1349	static void
885	api_transfer (SV prev_sv, SV next_sv)	1350	api_transfer (SV prev_sv, SV next_sv)
886	{	1351	{
		1352	dTHX;
887	struct transfer_args ta;	1353	struct transfer_args ta;
888		1354
889	prepare_transfer (&ta, prev_sv, next_sv);	1355	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
890	TRANSFER (ta);	1356	TRANSFER (ta, 1);
891	}
892
893	static int
894	api_save (SV *coro_sv, int new_save)
895	{
896	struct coro *coro = SvSTATE (coro_sv);
897	int old_save = coro->save;
898
899	if (new_save >= 0)
900	coro->save = new_save;
901
902	return old_save;
903	}	1357	}
904		1358
905	/ Coro ******************************************************************/	1359	/ Coro ******************************************************************/
906		1360
907	#define PRIO_MAX 3
908	#define PRIO_HIGH 1
909	#define PRIO_NORMAL 0
910	#define PRIO_LOW -1
911	#define PRIO_IDLE -3
912	#define PRIO_MIN -4
913
914	/* for Coro.pm */
915	static SV *coro_current;
916	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
917	static int coro_nready;
918
919	static void	1361	static void
920	coro_enq (SV *coro_sv)	1362	coro_enq (pTHX_ SV *coro_sv)
921	{	1363	{
922	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1364	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
923	coro_nready++;
924	}	1365	}
925		1366
926	static SV *	1367	static SV *
927	coro_deq (int min_prio)	1368	coro_deq (pTHX)
928	{	1369	{
929	int prio = PRIO_MAX - PRIO_MIN;	1370	int prio;
930		1371
931	min_prio -= PRIO_MIN;
932	if (min_prio < 0)
933	min_prio = 0;
934
935	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1372	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
936	if (AvFILLp (coro_ready [prio]) >= 0)	1373	if (AvFILLp (coro_ready [prio]) >= 0)
937	{
938	coro_nready--;
939	return av_shift (coro_ready [prio]);	1374	return av_shift (coro_ready [prio]);
940	}
941		1375
942	return 0;	1376	return 0;
943	}	1377	}
944		1378
945	static int	1379	static int
946	api_ready (SV *coro_sv)	1380	api_ready (SV *coro_sv)
947	{	1381	{
		1382	dTHX;
948	struct coro *coro;	1383	struct coro *coro;
949		1384
950	if (SvROK (coro_sv))	1385	if (SvROK (coro_sv))
951	coro_sv = SvRV (coro_sv);	1386	coro_sv = SvRV (coro_sv);
952		1387
953	coro = SvSTATE (coro_sv);	1388	coro = SvSTATE (coro_sv);
954		1389
955	if (coro->flags & CF_READY)	1390	if (coro->flags & CF_READY)
956	return 0;	1391	return 0;
957		1392
958	#if 0 /* this is actually harmless */
959	if (coro->flags & CF_RUNNING)
960	croak ("Coro::ready called on currently running coroutine");
961	#endif
962
963	coro->flags \|= CF_READY;	1393	coro->flags \|= CF_READY;
964		1394
965	LOCK;	1395	LOCK;
966	coro_enq (SvREFCNT_inc (coro_sv));	1396	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1397	++coro_nready;
967	UNLOCK;	1398	UNLOCK;
968		1399
969	return 1;	1400	return 1;
970	}	1401	}
971		1402
972	static int	1403	static int
973	api_is_ready (SV *coro_sv)	1404	api_is_ready (SV *coro_sv)
974	{	1405	{
		1406	dTHX;
975	return !!SvSTATE (coro_sv)->flags & CF_READY;	1407	return !!(SvSTATE (coro_sv)->flags & CF_READY);
976	}	1408	}
977		1409
978	static void	1410	static void
979	prepare_schedule (struct transfer_args *ta)	1411	prepare_schedule (pTHX_ struct transfer_args *ta)
980	{	1412	{
981	SV prev, next;	1413	SV prev_sv, next_sv;
982		1414
983	for (;;)	1415	for (;;)
984	{	1416	{
985	LOCK;	1417	LOCK;
986	next = coro_deq (PRIO_MIN);	1418	next_sv = coro_deq (aTHX);
		1419
		1420	/* nothing to schedule: call the idle handler */
		1421	if (expect_false (!next_sv))
		1422	{
		1423	dSP;
		1424	UNLOCK;
		1425
		1426	ENTER;
		1427	SAVETMPS;
		1428
		1429	PUSHMARK (SP);
		1430	PUTBACK;
		1431	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1432	SPAGAIN;
		1433
		1434	FREETMPS;
		1435	LEAVE;
		1436	continue;
		1437	}
		1438
		1439	ta->next = SvSTATE (next_sv);
		1440
		1441	/* cannot transfer to destroyed coros, skip and look for next */
		1442	if (expect_false (ta->next->flags & CF_DESTROYED))
		1443	{
		1444	UNLOCK;
		1445	SvREFCNT_dec (next_sv);
		1446	/* coro_nready is already taken care of by destroy */
		1447	continue;
		1448	}
		1449
		1450	--coro_nready;
987	UNLOCK;	1451	UNLOCK;
988
989	if (next)
990	break;	1452	break;
991
992	{
993	dSP;
994
995	ENTER;
996	SAVETMPS;
997
998	PUSHMARK (SP);
999	PUTBACK;
1000	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1001
1002	FREETMPS;
1003	LEAVE;
1004	}	1453	}
1005	}
1006
1007	prev = SvRV (coro_current);
1008	SvRV_set (coro_current, next);
1009		1454
1010	/* free this only after the transfer */	1455	/* free this only after the transfer */
1011	LOCK;	1456	prev_sv = SvRV (coro_current);
1012	free_coro_mortal ();
1013	UNLOCK;
1014	coro_mortal = prev;
1015
1016	assert (!SvROK(prev));//D
1017	assert (!SvROK(next));//D
1018
1019	ta->prev = SvSTATE (prev);	1457	ta->prev = SvSTATE (prev_sv);
1020	ta->next = SvSTATE (next);	1458	TRANSFER_CHECK (*ta);
1021
1022	assert (ta->next->flags & CF_READY);	1459	assert (ta->next->flags & CF_READY);
1023	ta->next->flags &= ~CF_READY;	1460	ta->next->flags &= ~CF_READY;
		1461	SvRV_set (coro_current, next_sv);
		1462
		1463	LOCK;
		1464	free_coro_mortal (aTHX);
		1465	coro_mortal = prev_sv;
		1466	UNLOCK;
1024	}	1467	}
1025		1468
1026	static void	1469	static void
1027	prepare_cede (struct transfer_args *ta)	1470	prepare_cede (pTHX_ struct transfer_args *ta)
1028	{	1471	{
1029	api_ready (coro_current);	1472	api_ready (coro_current);
1030
1031	prepare_schedule (ta);	1473	prepare_schedule (aTHX_ ta);
		1474	}
		1475
		1476	static int
		1477	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1478	{
		1479	if (coro_nready)
		1480	{
		1481	SV *prev = SvRV (coro_current);
		1482	prepare_schedule (aTHX_ ta);
		1483	api_ready (prev);
		1484	return 1;
		1485	}
		1486	else
		1487	return 0;
1032	}	1488	}
1033		1489
1034	static void	1490	static void
1035	api_schedule (void)	1491	api_schedule (void)
1036	{	1492	{
		1493	dTHX;
1037	struct transfer_args ta;	1494	struct transfer_args ta;
1038		1495
1039	prepare_schedule (&ta);	1496	prepare_schedule (aTHX_ &ta);
1040	TRANSFER (ta);	1497	TRANSFER (ta, 1);
		1498	}
		1499
		1500	static int
		1501	api_cede (void)
		1502	{
		1503	dTHX;
		1504	struct transfer_args ta;
		1505
		1506	prepare_cede (aTHX_ &ta);
		1507
		1508	if (expect_true (ta.prev != ta.next))
		1509	{
		1510	TRANSFER (ta, 1);
		1511	return 1;
		1512	}
		1513	else
		1514	return 0;
		1515	}
		1516
		1517	static int
		1518	api_cede_notself (void)
		1519	{
		1520	dTHX;
		1521	struct transfer_args ta;
		1522
		1523	if (prepare_cede_notself (aTHX_ &ta))
		1524	{
		1525	TRANSFER (ta, 1);
		1526	return 1;
		1527	}
		1528	else
		1529	return 0;
1041	}	1530	}
1042		1531
1043	static void	1532	static void
1044	api_cede (void)	1533	api_trace (SV *coro_sv, int flags)
1045	{	1534	{
1046	struct transfer_args ta;	1535	dTHX;
		1536	struct coro *coro = SvSTATE (coro_sv);
1047		1537
1048	prepare_cede (&ta);	1538	if (flags & CC_TRACE)
1049	TRANSFER (ta);	1539	{
1050	}	1540	if (!coro->cctx)
		1541	coro->cctx = cctx_new ();
		1542	else if (!(coro->cctx->flags & CC_TRACE))
		1543	croak ("cannot enable tracing on coroutine with custom stack");
1051		1544
		1545	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1546	}
		1547	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1548	{
		1549	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1550
		1551	if (coro->flags & CF_RUNNING)
		1552	PL_runops = RUNOPS_DEFAULT;
		1553	else
		1554	coro->slot->runops = RUNOPS_DEFAULT;
		1555	}
		1556	}
		1557
1052	MODULE = Coro::State PACKAGE = Coro::State	1558	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1053		1559
1054	PROTOTYPES: DISABLE	1560	PROTOTYPES: DISABLE
1055		1561
1056	BOOT:	1562	BOOT:
1057	{	1563	{
1058	#ifdef USE_ITHREADS	1564	#ifdef USE_ITHREADS
1059	MUTEX_INIT (&coro_mutex);	1565	MUTEX_INIT (&coro_mutex);
1060	#endif	1566	#endif
1061	BOOT_PAGESIZE;	1567	BOOT_PAGESIZE;
1062		1568
		1569	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1570	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1571
		1572	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1573	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1574	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1575	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1576
		1577	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1578	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1579	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1580
1063	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1581	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1064		1582
		1583	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1584	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1585	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1069	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1586	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1070		1587
1071	main_mainstack = PL_mainstack;	1588	main_mainstack = PL_mainstack;
		1589	main_top_env = PL_top_env;
		1590
		1591	while (main_top_env->je_prev)
		1592	main_top_env = main_top_env->je_prev;
1072		1593
1073	coroapi.ver = CORO_API_VERSION;	1594	coroapi.ver = CORO_API_VERSION;
		1595	coroapi.rev = CORO_API_REVISION;
1074	coroapi.transfer = api_transfer;	1596	coroapi.transfer = api_transfer;
1075		1597
1076	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1598	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1077	}	1599	}
1078		1600
1079	SV *	1601	SV *
1080	new (char *klass, ...)	1602	new (char *klass, ...)
1081	CODE:	1603	CODE:
1082	{	1604	{
1083	struct coro *coro;	1605	struct coro *coro;
		1606	MAGIC *mg;
1084	HV *hv;	1607	HV *hv;
1085	int i;	1608	int i;
1086		1609
1087	Newz (0, coro, 1, struct coro);	1610	Newz (0, coro, 1, struct coro);
1088	coro->args = newAV ();	1611	coro->args = newAV ();
1089	coro->save = CORO_SAVE_ALL;
1090	coro->flags = CF_NEW;	1612	coro->flags = CF_NEW;
1091		1613
		1614	if (coro_first) coro_first->prev = coro;
		1615	coro->next = coro_first;
		1616	coro_first = coro;
		1617
1092	hv = newHV ();	1618	coro->hv = hv = newHV ();
1093	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1619	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1620	mg->mg_flags \|= MGf_DUP;
1094	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1621	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1095		1622
		1623	av_extend (coro->args, items - 1);
1096	for (i = 1; i < items; i++)	1624	for (i = 1; i < items; i++)
1097	av_push (coro->args, newSVsv (ST (i)));	1625	av_push (coro->args, newSVsv (ST (i)));
1098	}	1626	}
1099	OUTPUT:	1627	OUTPUT:
1100	RETVAL	1628	RETVAL
1101		1629
1102	int	1630	# these not obviously related functions are all rolled into the same xs
1103	save (SV *coro, int new_save = -1)	1631	# function to increase chances that they all will call transfer with the same
1104	CODE:	1632	# stack offset
1105	RETVAL = api_save (coro, new_save);
1106	OUTPUT:
1107	RETVAL
1108
1109	void	1633	void
1110	_set_stacklevel (...)	1634	_set_stacklevel (...)
1111	ALIAS:	1635	ALIAS:
1112	Coro::State::transfer = 1	1636	Coro::State::transfer = 1
1113	Coro::schedule = 2	1637	Coro::schedule = 2
1114	Coro::cede = 3	1638	Coro::cede = 3
		1639	Coro::cede_notself = 4
1115	CODE:	1640	CODE:
1116	{	1641	{
1117	struct transfer_args ta;	1642	struct transfer_args ta;
1118		1643
		1644	PUTBACK;
1119	switch (ix)	1645	switch (ix)
1120	{	1646	{
1121	case 0:	1647	case 0:
1122	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1648	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1123	ta.next = 0;	1649	ta.next = 0;
…		…
1125		1651
1126	case 1:	1652	case 1:
1127	if (items != 2)	1653	if (items != 2)
1128	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1654	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1129		1655
1130	prepare_transfer (&ta, ST (0), ST (1));	1656	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1131	break;	1657	break;
1132		1658
1133	case 2:	1659	case 2:
1134	prepare_schedule (&ta);	1660	prepare_schedule (aTHX_ &ta);
1135	break;	1661	break;
1136		1662
1137	case 3:	1663	case 3:
1138	prepare_cede (&ta);	1664	prepare_cede (aTHX_ &ta);
		1665	break;
		1666
		1667	case 4:
		1668	if (!prepare_cede_notself (aTHX_ &ta))
		1669	XSRETURN_EMPTY;
		1670
1139	break;	1671	break;
1140	}	1672	}
		1673	SPAGAIN;
1141		1674
		1675	BARRIER;
		1676	PUTBACK;
1142	TRANSFER (ta);	1677	TRANSFER (ta, 0);
		1678	SPAGAIN; /* might be the sp of a different coroutine now */
		1679	/* be extra careful not to ever do anything after TRANSFER */
1143	}	1680	}
1144		1681
1145	void	1682	bool
1146	_clone_state_from (SV dst, SV src)	1683	_destroy (SV *coro_sv)
1147	CODE:	1684	CODE:
1148	{	1685	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1149	struct coro *coro_src = SvSTATE (src);	1686	OUTPUT:
1150		1687	RETVAL
1151	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1152
1153	++coro_src->refcnt;
1154	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1155	}
1156		1688
1157	void	1689	void
1158	_exit (code)	1690	_exit (code)
1159	int code	1691	int code
1160	PROTOTYPE: $	1692	PROTOTYPE: $
1161	CODE:	1693	CODE:
1162	_exit (code);	1694	_exit (code);
1163		1695
1164	int	1696	int
		1697	cctx_stacksize (int new_stacksize = 0)
		1698	CODE:
		1699	RETVAL = coro_stacksize;
		1700	if (new_stacksize)
		1701	coro_stacksize = new_stacksize;
		1702	OUTPUT:
		1703	RETVAL
		1704
		1705	int
1165	cctx_count ()	1706	cctx_count ()
1166	CODE:	1707	CODE:
1167	RETVAL = cctx_count;	1708	RETVAL = cctx_count;
1168	OUTPUT:	1709	OUTPUT:
1169	RETVAL	1710	RETVAL
…		…
1173	CODE:	1714	CODE:
1174	RETVAL = cctx_idle;	1715	RETVAL = cctx_idle;
1175	OUTPUT:	1716	OUTPUT:
1176	RETVAL	1717	RETVAL
1177		1718
		1719	void
		1720	list ()
		1721	PPCODE:
		1722	{
		1723	struct coro *coro;
		1724	for (coro = coro_first; coro; coro = coro->next)
		1725	if (coro->hv)
		1726	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1727	}
		1728
		1729	void
		1730	call (Coro::State coro, SV *coderef)
		1731	ALIAS:
		1732	eval = 1
		1733	CODE:
		1734	{
		1735	if (coro->mainstack)
		1736	{
		1737	struct coro temp;
		1738
		1739	if (!(coro->flags & CF_RUNNING))
		1740	{
		1741	PUTBACK;
		1742	save_perl (aTHX_ &temp);
		1743	load_perl (aTHX_ coro);
		1744	}
		1745
		1746	{
		1747	dSP;
		1748	ENTER;
		1749	SAVETMPS;
		1750	PUTBACK;
		1751	PUSHSTACK;
		1752	PUSHMARK (SP);
		1753
		1754	if (ix)
		1755	eval_sv (coderef, 0);
		1756	else
		1757	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1758
		1759	POPSTACK;
		1760	SPAGAIN;
		1761	FREETMPS;
		1762	LEAVE;
		1763	PUTBACK;
		1764	}
		1765
		1766	if (!(coro->flags & CF_RUNNING))
		1767	{
		1768	save_perl (aTHX_ coro);
		1769	load_perl (aTHX_ &temp);
		1770	SPAGAIN;
		1771	}
		1772	}
		1773	}
		1774
		1775	SV *
		1776	is_ready (Coro::State coro)
		1777	PROTOTYPE: $
		1778	ALIAS:
		1779	is_ready = CF_READY
		1780	is_running = CF_RUNNING
		1781	is_new = CF_NEW
		1782	is_destroyed = CF_DESTROYED
		1783	CODE:
		1784	RETVAL = boolSV (coro->flags & ix);
		1785	OUTPUT:
		1786	RETVAL
		1787
		1788	void
		1789	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1790
		1791	SV *
		1792	has_stack (Coro::State coro)
		1793	PROTOTYPE: $
		1794	CODE:
		1795	RETVAL = boolSV (!!coro->cctx);
		1796	OUTPUT:
		1797	RETVAL
		1798
		1799	int
		1800	is_traced (Coro::State coro)
		1801	PROTOTYPE: $
		1802	CODE:
		1803	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1804	OUTPUT:
		1805	RETVAL
		1806
		1807	IV
		1808	rss (Coro::State coro)
		1809	PROTOTYPE: $
		1810	ALIAS:
		1811	usecount = 1
		1812	CODE:
		1813	switch (ix)
		1814	{
		1815	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1816	case 1: RETVAL = coro->usecount; break;
		1817	}
		1818	OUTPUT:
		1819	RETVAL
		1820
		1821	void
		1822	force_cctx ()
		1823	CODE:
		1824	struct coro *coro = SvSTATE (coro_current);
		1825	coro->cctx->idle_sp = 0;
		1826
1178	MODULE = Coro::State PACKAGE = Coro	1827	MODULE = Coro::State PACKAGE = Coro
1179		1828
1180	BOOT:	1829	BOOT:
1181	{	1830	{
1182	int i;	1831	int i;
1183		1832
		1833	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1834	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1835	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1836
		1837	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1838	SvREADONLY_on (coro_current);
		1839
1184	coro_stash = gv_stashpv ("Coro", TRUE);	1840	coro_stash = gv_stashpv ("Coro", TRUE);
1185		1841
1186	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1842	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1187	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1843	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1188	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1844	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1189	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1845	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1190	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1846	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1191	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1847	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1192		1848
1193	coro_current = get_sv ("Coro::current", FALSE);
1194	SvREADONLY_on (coro_current);
1195
1196	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1849	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1197	coro_ready[i] = newAV ();	1850	coro_ready[i] = newAV ();
1198		1851
1199	{	1852	{
1200	SV *sv = perl_get_sv("Coro::API", 1);	1853	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1854	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1201		1855
1202	coroapi.schedule = api_schedule;	1856	coroapi.schedule = api_schedule;
1203	coroapi.save = api_save;
1204	coroapi.cede = api_cede;	1857	coroapi.cede = api_cede;
		1858	coroapi.cede_notself = api_cede_notself;
1205	coroapi.ready = api_ready;	1859	coroapi.ready = api_ready;
1206	coroapi.is_ready = api_is_ready;	1860	coroapi.is_ready = api_is_ready;
1207	coroapi.nready = &coro_nready;	1861	coroapi.nready = &coro_nready;
1208	coroapi.current = coro_current;	1862	coroapi.current = coro_current;
1209		1863
1210	GCoroAPI = &coroapi;	1864	GCoroAPI = &coroapi;
1211	sv_setiv (sv, (IV)&coroapi);	1865	sv_setiv (sv, (IV)&coroapi);
1212	SvREADONLY_on (sv);	1866	SvREADONLY_on (sv);
1213	}	1867	}
…		…
1229	RETVAL = coro->prio;	1883	RETVAL = coro->prio;
1230		1884
1231	if (items > 1)	1885	if (items > 1)
1232	{	1886	{
1233	if (ix)	1887	if (ix)
1234	newprio += coro->prio;	1888	newprio = coro->prio - newprio;
1235		1889
1236	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1890	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1237	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1891	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1238		1892
1239	coro->prio = newprio;	1893	coro->prio = newprio;
1240	}	1894	}
1241	}	1895	}
		1896	OUTPUT:
		1897	RETVAL
1242		1898
1243	SV *	1899	SV *
1244	ready (SV *self)	1900	ready (SV *self)
1245	PROTOTYPE: $	1901	PROTOTYPE: $
1246	CODE:	1902	CODE:
1247	RETVAL = boolSV (api_ready (self));	1903	RETVAL = boolSV (api_ready (self));
1248	OUTPUT:	1904	OUTPUT:
1249	RETVAL	1905	RETVAL
1250		1906
1251	SV *
1252	is_ready (SV *self)
1253	PROTOTYPE: $
1254	CODE:
1255	RETVAL = boolSV (api_is_ready (self));
1256	OUTPUT:
1257	RETVAL
1258
1259	int	1907	int
1260	nready (...)	1908	nready (...)
1261	PROTOTYPE:	1909	PROTOTYPE:
1262	CODE:	1910	CODE:
1263	RETVAL = coro_nready;	1911	RETVAL = coro_nready;
1264	OUTPUT:	1912	OUTPUT:
1265	RETVAL	1913	RETVAL
1266		1914
		1915	void
		1916	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1917	PROTOTYPE: $;$
		1918	CODE:
		1919	SvREFCNT_dec (self->throw);
		1920	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1921
		1922	void
		1923	swap_defsv (Coro::State self)
		1924	PROTOTYPE: $
		1925	ALIAS:
		1926	swap_defav = 1
		1927	CODE:
		1928	if (!self->slot)
		1929	croak ("cannot swap state with coroutine that has no saved state");
		1930	else
		1931	{
		1932	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1933	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1934
		1935	SV tmp = src; src = dst; *dst = tmp;
		1936	}
		1937
		1938	# for async_pool speedup
		1939	void
		1940	_pool_1 (SV *cb)
		1941	CODE:
		1942	{
		1943	struct coro *coro = SvSTATE (coro_current);
		1944	HV hv = (HV )SvRV (coro_current);
		1945	AV *defav = GvAV (PL_defgv);
		1946	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1947	AV *invoke_av;
		1948	int i, len;
		1949
		1950	if (!invoke)
		1951	{
		1952	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		1953	croak ("\3async_pool terminate\2\n");
		1954	}
		1955
		1956	SvREFCNT_dec (coro->saved_deffh);
		1957	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1958
		1959	hv_store (hv, "desc", sizeof ("desc") - 1,
		1960	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1961
		1962	invoke_av = (AV *)SvRV (invoke);
		1963	len = av_len (invoke_av);
		1964
		1965	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1966
		1967	if (len > 0)
		1968	{
		1969	av_fill (defav, len - 1);
		1970	for (i = 0; i < len; ++i)
		1971	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1972	}
		1973
		1974	SvREFCNT_dec (invoke);
		1975	}
		1976
		1977	void
		1978	_pool_2 (SV *cb)
		1979	CODE:
		1980	{
		1981	struct coro *coro = SvSTATE (coro_current);
		1982
		1983	sv_setsv (cb, &PL_sv_undef);
		1984
		1985	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1986	coro->saved_deffh = 0;
		1987
		1988	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1989	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1990	{
		1991	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		1992	croak ("\3async_pool terminate\2\n");
		1993	}
		1994
		1995	av_clear (GvAV (PL_defgv));
		1996	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1997	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1998
		1999	coro->prio = 0;
		2000
		2001	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2002	api_trace (coro_current, 0);
		2003
		2004	av_push (av_async_pool, newSVsv (coro_current));
		2005	}
		2006
		2007
1267	MODULE = Coro::State PACKAGE = Coro::AIO	2008	MODULE = Coro::State PACKAGE = Coro::AIO
1268		2009
1269	SV *	2010	SV *
1270	_get_state ()	2011	_get_state ()
1271	CODE:	2012	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs. Revision 1.232 by root, Thu Apr 24 12:40:38 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.232 by root, Thu Apr 24 12:40:38 2008 UTC