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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.233 by root, Fri May 9 22:04:37 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	#include <stdio.h>	12	#include <stdio.h>
44	#include <errno.h>	13	#include <errno.h>
		14	#include <assert.h>
45		15
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	16	#ifdef WIN32
47	# undef STACKGUARD	17	# undef setjmp
48	#endif	18	# undef longjmp
49		19	# undef _exit
50	#ifndef STACKGUARD	20	# define setjmp _setjmp // deep magic, don't ask
51	# define STACKGUARD 0	21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
52	#endif	23	#endif
53		24
54	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
55	# include <unistd.h>	26	# include <unistd.h>
56	# include <sys/mman.h>	27	# include <sys/mman.h>
72	#else	43	#else
73	# define PAGESIZE 0	44	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	45	# define BOOT_PAGESIZE (void)0
75	#endif	46	#endif
76		47
77	/* The next macro should declare a variable stacklevel that contains and approximation	48	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	49	# include <valgrind/valgrind.h>
79	* 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. */
80	#define dSTACKLEVEL int stacklevel	118	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	119	#define STACKLEVEL ((void *)&stacklevel)
82		120
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		122
85	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
86	# 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))
87	#else	127	#else
88	# define attribute(x)	128	# define attribute(x)
		129	# define BARRIER
		130	# define expect(expr,value) (expr)
89	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
90		135
91	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
92		137
93	#include "CoroAPI.h"	138	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		139
97	#ifdef USE_ITHREADS	140	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	141	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	142	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	143	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	144	#else
102	# define LOCK (void)0	145	# define LOCK (void)0
103	# define UNLOCK (void)0	146	# define UNLOCK (void)0
104	#endif	147	#endif
105		148
		149	/* helper storage struct for Coro::AIO */
		150	struct io_state
		151	{
		152	int errorno;
		153	I32 laststype;
		154	int laststatval;
		155	Stat_t statcache;
		156	};
		157
		158	static size_t coro_stacksize = CORO_STACKSIZE;
106	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
107	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;
108	static HV coro_state_stash, coro_stash;	162	static HV coro_state_stash, coro_stash;
109	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;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
110		178
111	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
112	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
		181
		182	enum {
		183	CC_MAPPED = 0x01,
		184	CC_NOREUSE = 0x02, /* throw this away after tracing */
		185	CC_TRACE = 0x04,
		186	CC_TRACE_SUB = 0x08, /* trace sub calls */
		187	CC_TRACE_LINE = 0x10, /* trace each statement */
		188	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		189	};
113		190
114	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
115	typedef struct coro_cctx {	192	typedef struct coro_cctx {
116	struct coro_cctx *next;	193	struct coro_cctx *next;
117		194
118	/* the stack */	195	/* the stack */
119	void *sptr;	196	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	197	size_t ssize;
121		198
122	/* cpu state */	199	/* cpu state */
123	void idle_sp; / sp of top-level transfer/schedule/cede call */	200	void idle_sp; / sp of top-level transfer/schedule/cede call */
		201	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
124	JMPENV *top_env;	202	JMPENV *top_env;
125	coro_context cctx;	203	coro_context cctx;
126		204
127	int inuse;
128
129	#if USE_VALGRIND	205	#if CORO_USE_VALGRIND
130	int valgrind_id;	206	int valgrind_id;
131	#endif	207	#endif
		208	unsigned char flags;
132	} coro_cctx;	209	} coro_cctx;
133		210
134	enum {	211	enum {
135	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
137	CF_NEW = 0x0004, /* ahs never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
		215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
138	};	216	};
		217
		218	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		219	typedef struct {
		220	SV *defsv;
		221	AV *defav;
		222	SV *errsv;
		223	SV *irsgv;
		224	#define VAR(name,type) type name;
		225	# include "state.h"
		226	#undef VAR
		227	} perl_slots;
		228
		229	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
139		230
140	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
141	struct coro {	232	struct coro {
142	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
143	coro_cctx *cctx;	234	coro_cctx *cctx;
144		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots slot; / basically the saved sp */
		239
145	/* data associated with this coroutine (initial args) */	240	AV args; / data associated with this coroutine (initial args) */
146	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
147	int refcnt;	242	int flags; /* CF_ flags */
148	int flags;	243	HV hv; / the perl hash associated with this coro, if any */
149		244
150	/* optionally saved, might be zero */	245	/* statistics */
151	AV *defav;	246	int usecount; /* number of transfers to this coro */
152	SV *defsv;
153	SV *errsv;
154
155	#define VAR(name,type) type name;
156	# include "state.h"
157	#undef VAR
158		247
159	/* coro process data */	248	/* coro process data */
160	int prio;	249	int prio;
		250	SV throw; / exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
		254
		255	/* linked list */
		256	struct coro next, prev;
161	};	257	};
162		258
163	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
164	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
165		261
		262	/ Coro ******************************************************************/
		263
		264	#define PRIO_MAX 3
		265	#define PRIO_HIGH 1
		266	#define PRIO_NORMAL 0
		267	#define PRIO_LOW -1
		268	#define PRIO_IDLE -3
		269	#define PRIO_MIN -4
		270
		271	/* for Coro.pm */
		272	static SV *coro_current;
		273	static SV *coro_readyhook;
		274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		275	static int coro_nready;
		276	static struct coro *coro_first;
		277
		278	/ lowlevel stuff ********************************************************/
		279
		280	static SV *
		281	coro_get_sv (pTHX_ const char *name, int create)
		282	{
		283	#if PERL_VERSION_ATLEAST (5,10,0)
		284	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		285	get_sv (name, create);
		286	#endif
		287	return get_sv (name, create);
		288	}
		289
166	static AV *	290	static AV *
		291	coro_get_av (pTHX_ const char *name, int create)
		292	{
		293	#if PERL_VERSION_ATLEAST (5,10,0)
		294	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		295	get_av (name, create);
		296	#endif
		297	return get_av (name, create);
		298	}
		299
		300	static HV *
		301	coro_get_hv (pTHX_ const char *name, int create)
		302	{
		303	#if PERL_VERSION_ATLEAST (5,10,0)
		304	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		305	get_hv (name, create);
		306	#endif
		307	return get_hv (name, create);
		308	}
		309
		310	static AV *
167	coro_clone_padlist (CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
168	{	312	{
169	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
170	AV newpadlist, newpad;	314	AV newpadlist, newpad;
171		315
172	newpadlist = newAV ();	316	newpadlist = newAV ();
173	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
174	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
175	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
176	#else	320	#else
177	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
178	#endif	322	#endif
179	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
184		328
185	return newpadlist;	329	return newpadlist;
186	}	330	}
187		331
188	static void	332	static void
189	free_padlist (AV *padlist)	333	free_padlist (pTHX_ AV *padlist)
190	{	334	{
191	/* may be during global destruction */	335	/* may be during global destruction */
192	if (SvREFCNT (padlist))	336	if (SvREFCNT (padlist))
193	{	337	{
194	I32 i = AvFILLp (padlist);	338	I32 i = AvFILLp (padlist);
…		…
215	AV *padlist;	359	AV *padlist;
216	AV av = (AV )mg->mg_obj;	360	AV av = (AV )mg->mg_obj;
217		361
218	/* casting is fun. */	362	/* casting is fun. */
219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	363	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
220	free_padlist (padlist);	364	free_padlist (aTHX_ padlist);
221
222	SvREFCNT_dec (av);
223		365
224	return 0;	366	return 0;
225	}	367	}
226		368
227	#define PERL_MAGIC_coro PERL_MAGIC_ext	369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		370	#define CORO_MAGIC_type_state PERL_MAGIC_ext
228		371
229	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	372	static MGVTBL coro_cv_vtbl = {
		373	0, 0, 0, 0,
		374	coro_cv_free
		375	};
230		376
231	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
232	SvMAGIC (cv) \	378	SvMAGIC (sv) \
233	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
234	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
236	: 0	382	: 0
		383
		384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		386
		387	static struct coro *
		388	SvSTATE_ (pTHX_ SV *coro)
		389	{
		390	HV *stash;
		391	MAGIC *mg;
		392
		393	if (SvROK (coro))
		394	coro = SvRV (coro);
		395
		396	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		397	croak ("Coro::State object required");
		398
		399	stash = SvSTASH (coro);
		400	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		401	{
		402	/* very slow, but rare, check */
		403	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		404	croak ("Coro::State object required");
		405	}
		406
		407	mg = CORO_MAGIC_state (coro);
		408	return (struct coro *)mg->mg_ptr;
		409	}
		410
		411	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
237		412
238	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
239	static void	414	static void
240	get_padlist (CV *cv)	415	get_padlist (pTHX_ CV *cv)
241	{	416	{
242	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
243	AV *av;	418	AV *av;
244		419
245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247	else	422	else
248	{	423	{
249	#if 0	424	#if CORO_PREFER_PERL_FUNCTIONS
250	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
251	CV *cp = Perl_cv_clone (cv);	426	CV *cp = Perl_cv_clone (cv);
252	CvPADLIST (cv) = CvPADLIST (cp);	427	CvPADLIST (cv) = CvPADLIST (cp);
253	CvPADLIST (cp) = 0;	428	CvPADLIST (cp) = 0;
254	SvREFCNT_dec (cp);	429	SvREFCNT_dec (cp);
255	#else	430	#else
256	CvPADLIST (cv) = coro_clone_padlist (cv);	431	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
257	#endif	432	#endif
258	}	433	}
259	}	434	}
260		435
261	static void	436	static void
262	put_padlist (CV *cv)	437	put_padlist (pTHX_ CV *cv)
263	{	438	{
264	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
265	AV *av;	440	AV *av;
266		441
267	if (!mg)	442	if (expect_false (!mg))
268	{	443	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
269	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
270	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
271	mg->mg_virtual = &vtbl_coro;
272	mg->mg_obj = (SV *)newAV ();
273	}
274		444
275	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
276		446
277	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
278	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
279		449
280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
281	}	451	}
282		452
283	#define SB do {	453	/ load & save, init *****************************************************/
284	#define SE } while (0)
285
286	#define LOAD(state) load_state ((state))
287	#define SAVE(state,flags) save_state ((state),(flags))
288
289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
290		454
291	static void	455	static void
292	load_state (Coro__State c)	456	load_perl (pTHX_ Coro__State c)
293	{	457	{
		458	perl_slots *slot = c->slot;
		459	c->slot = 0;
		460
		461	PL_mainstack = c->mainstack;
		462
		463	GvSV (PL_defgv) = slot->defsv;
		464	GvAV (PL_defgv) = slot->defav;
		465	GvSV (PL_errgv) = slot->errsv;
		466	GvSV (irsgv) = slot->irsgv;
		467
294	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
295	# include "state.h"	469	# include "state.h"
296	#undef VAR	470	#undef VAR
297
298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
301		471
302	{	472	{
303	dSP;	473	dSP;
		474
304	CV *cv;	475	CV *cv;
305		476
306	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
307	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
308	{	479	{
309	put_padlist (cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
310	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
311	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
312	}	483	}
313		484
314	PUTBACK;	485	PUTBACK;
315	}	486	}
316	}	487	}
317		488
318	static void	489	static void
319	save_state (Coro__State c, int flags)	490	save_perl (pTHX_ Coro__State c)
320	{	491	{
321	{	492	{
322	dSP;	493	dSP;
323	I32 cxix = cxstack_ix;	494	I32 cxix = cxstack_ix;
324	PERL_CONTEXT *ccstk = cxstack;	495	PERL_CONTEXT *ccstk = cxstack;
…		…
327	/*	498	/*
328	* the worst thing you can imagine happens first - we have to save	499	* the worst thing you can imagine happens first - we have to save
329	* (and reinitialize) all cv's in the whole callchain :(	500	* (and reinitialize) all cv's in the whole callchain :(
330	*/	501	*/
331		502
332	PUSHs (Nullsv);	503	XPUSHs (Nullsv);
333	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
334	for (;;)	505	for (;;)
335	{	506	{
336	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
337	{	508	{
338	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
339		510
340	if (CxTYPE (cx) == CXt_SUB)	511	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
341	{	512	{
342	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
343		514
344	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
345	{	516	{
346	EXTEND (SP, 3);	517	EXTEND (SP, 3);
347
348	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
350	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
351		521
352	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
353	get_padlist (cv);	523	get_padlist (aTHX_ cv);
354	}	524	}
355	}	525	}
356	#ifdef CXt_FORMAT
357	else if (CxTYPE (cx) == CXt_FORMAT)
358	{
359	/* I never used formats, so how should I know how these are implemented? */
360	/* my bold guess is as a simple, plain sub... */
361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
362	}
363	#endif
364	}	526	}
365		527
366	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
367	break;	529	break;
368		530
369	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
370	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
371	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
372	}	534	}
373		535
374	PUTBACK;	536	PUTBACK;
375	}	537	}
376		538
377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	539	/* allocate some space on the context stack for our purposes */
378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
		542	if (SLOT_COUNT >= 2) CXINC;
		543	if (SLOT_COUNT >= 3) CXINC;
		544	{
		545	int i;
		546	for (i = 3; i < SLOT_COUNT; ++i)
		547	CXINC;
		548	}
		549	cxstack_ix -= SLOT_COUNT; /* undo allocation */
380		550
		551	c->mainstack = PL_mainstack;
		552
		553	{
		554	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		555
		556	slot->defav = GvAV (PL_defgv);
		557	slot->defsv = DEFSV;
		558	slot->errsv = ERRSV;
		559	slot->irsgv = GvSV (irsgv);
		560
381	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
382	# include "state.h"	562	# include "state.h"
383	#undef VAR	563	#undef VAR
		564	}
384	}	565	}
385		566
386	/*	567	/*
387	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
388	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
389	* on the (sometimes correct) assumption that coroutines do	570	* on the (sometimes correct) assumption that coroutines do
390	* not usually need a lot of stackspace.	571	* not usually need a lot of stackspace.
391	*/	572	*/
		573	#if CORO_PREFER_PERL_FUNCTIONS
		574	# define coro_init_stacks init_stacks
		575	#else
392	static void	576	static void
393	coro_init_stacks ()	577	coro_init_stacks (pTHX)
394	{	578	{
395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	579	PL_curstackinfo = new_stackinfo(32, 8);
396	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
397	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
399		583
400	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
401	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
403		587
404	New(50,PL_tmps_stack,128,SV*);	588	New(50,PL_tmps_stack,32,SV*);
405	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
406	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
407	PL_tmps_max = 128;	591	PL_tmps_max = 32;
408		592
409	New(54,PL_markstack,32,I32);	593	New(54,PL_markstack,16,I32);
410	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
411	PL_markstack_max = PL_markstack + 32;	595	PL_markstack_max = PL_markstack + 16;
412		596
413	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
414	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
415	#endif	599	#endif
416		600
417	New(54,PL_scopestack,32,I32);	601	New(54,PL_scopestack,8,I32);
418	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
419	PL_scopestack_max = 32;	603	PL_scopestack_max = 8;
420		604
421	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
422	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
423	PL_savestack_max = 64;	607	PL_savestack_max = 24;
424		608
425	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
426	New(54,PL_retstack,16,OP*);	610	New(54,PL_retstack,4,OP*);
427	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
428	PL_retstack_max = 16;	612	PL_retstack_max = 4;
429	#endif	613	#endif
430	}	614	}
		615	#endif
431		616
432	/*	617	/*
433	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
434	*/	619	*/
435	static void	620	static void
436	coro_destroy_stacks ()	621	coro_destroy_stacks (pTHX)
437	{	622	{
438	if (!IN_DESTRUCT)
439	{
440	/* is this ugly, I ask? */
441	LEAVE_SCOPE (0);
442
443	/* sure it is, but more important: is it correct?? :/ */
444	FREETMPS;
445
446	/POPSTACK_TO (PL_mainstack);//D//use/
447	}
448
449	while (PL_curstackinfo->si_next)	623	while (PL_curstackinfo->si_next)
450	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
451		625
452	while (PL_curstackinfo)	626	while (PL_curstackinfo)
453	{	627	{
454	PERL_SI *p = PL_curstackinfo->si_prev;	628	PERL_SI *p = PL_curstackinfo->si_prev;
455		629
456	{ /D//remove/
457	dSP;
458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459	PUTBACK; /* possibly superfluous */
460	}
461
462	if (!IN_DESTRUCT)	630	if (!IN_DESTRUCT)
463	{
464	dounwind (-1);/D//remove/
465	SvREFCNT_dec (PL_curstackinfo->si_stack);	631	SvREFCNT_dec (PL_curstackinfo->si_stack);
466	}
467		632
468	Safefree (PL_curstackinfo->si_cxstack);	633	Safefree (PL_curstackinfo->si_cxstack);
469	Safefree (PL_curstackinfo);	634	Safefree (PL_curstackinfo);
470	PL_curstackinfo = p;	635	PL_curstackinfo = p;
471	}	636	}
472		637
473	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
474	Safefree (PL_markstack);	639	Safefree (PL_markstack);
475	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
476	Safefree (PL_savestack);	641	Safefree (PL_savestack);
477	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
478	Safefree (PL_retstack);	643	Safefree (PL_retstack);
479	#endif	644	#endif
480	}	645	}
481		646
		647	static size_t
		648	coro_rss (pTHX_ struct coro *coro)
		649	{
		650	size_t rss = sizeof (*coro);
		651
		652	if (coro->mainstack)
		653	{
		654	perl_slots tmp_slot;
		655	perl_slots *slot;
		656
		657	if (coro->flags & CF_RUNNING)
		658	{
		659	slot = &tmp_slot;
		660
		661	#define VAR(name,type) slot->name = PL_ ## name;
		662	# include "state.h"
		663	#undef VAR
		664	}
		665	else
		666	slot = coro->slot;
		667
		668	rss += sizeof (slot->curstackinfo);
		669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		671	rss += slot->tmps_max * sizeof (SV *);
		672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		673	rss += slot->scopestack_max * sizeof (I32);
		674	rss += slot->savestack_max * sizeof (ANY);
		675
		676	#if !PERL_VERSION_ATLEAST (5,10,0)
		677	rss += slot->retstack_max * sizeof (OP *);
		678	#endif
		679	}
		680
		681	return rss;
		682	}
		683
		684	/ coroutine stack handling **********************************************/
		685
		686	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		687	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		688
		689	/*
		690	* This overrides the default magic get method of %SIG elements.
		691	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		692	* and instead of tryign to save and restore the hash elements, we just provide
		693	* readback here.
		694	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		695	* not expecting this to actually change the hook. This is a potential problem
		696	* when a schedule happens then, but we ignore this.
		697	*/
		698	static int
		699	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		700	{
		701	const char *s = MgPV_nolen_const (mg);
		702
		703	if (*s == '_')
		704	{
		705	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		706	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		707	}
		708
		709	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		710	}
		711
		712	static int
		713	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		714	{
		715	const char *s = MgPV_nolen_const (mg);
		716
		717	if (*s == '_')
		718	{
		719	SV **svp = 0;
		720
		721	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		722	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		723
		724	if (svp)
		725	{
		726	SV old = svp;
		727	*svp = newSVsv (sv);
		728	SvREFCNT_dec (old);
		729	return 0;
		730	}
		731	}
		732
		733	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		734	}
		735
482	static void	736	static void
483	setup_coro (struct coro *coro)	737	coro_setup (pTHX_ struct coro *coro)
484	{	738	{
485	/*	739	/*
486	* emulate part of the perl startup here.	740	* emulate part of the perl startup here.
487	*/	741	*/
488
489	coro_init_stacks ();	742	coro_init_stacks (aTHX);
490		743
		744	PL_runops = RUNOPS_DEFAULT;
491	PL_curcop = &PL_compiling;	745	PL_curcop = &PL_compiling;
492	PL_in_eval = EVAL_NULL;	746	PL_in_eval = EVAL_NULL;
		747	PL_comppad = 0;
493	PL_curpm = 0;	748	PL_curpm = 0;
		749	PL_curpad = 0;
494	PL_localizing = 0;	750	PL_localizing = 0;
495	PL_dirty = 0;	751	PL_dirty = 0;
496	PL_restartop = 0;	752	PL_restartop = 0;
		753	#if PERL_VERSION_ATLEAST (5,10,0)
		754	PL_parser = 0;
		755	#endif
		756
		757	/* recreate the die/warn hooks */
		758	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		759	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		760
		761	GvSV (PL_defgv) = newSV (0);
		762	GvAV (PL_defgv) = coro->args; coro->args = 0;
		763	GvSV (PL_errgv) = newSV (0);
		764	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		765	PL_rs = newSVsv (GvSV (irsgv));
		766	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
497		767
498	{	768	{
499	dSP;	769	dSP;
500	LOGOP myop;	770	LOGOP myop;
501		771
502	/* I have no idea why this is needed, but it is */
503	PUSHMARK (SP);
504
505	SvREFCNT_dec (GvAV (PL_defgv));
506	GvAV (PL_defgv) = coro->args; coro->args = 0;
507
508	Zero (&myop, 1, LOGOP);	772	Zero (&myop, 1, LOGOP);
509	myop.op_next = Nullop;	773	myop.op_next = Nullop;
510	myop.op_flags = OPf_WANT_VOID;	774	myop.op_flags = OPf_WANT_VOID;
511		775
		776	PUSHMARK (SP);
		777	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		778	PUTBACK;
512	PL_op = (OP *)&myop;	779	PL_op = (OP *)&myop;
513
514	PUSHMARK (SP);
515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516	PUTBACK;
517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	780	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518	SPAGAIN;	781	SPAGAIN;
519	}	782	}
520		783
521	ENTER; /* necessary e.g. for dounwind */	784	/* this newly created coroutine might be run on an existing cctx which most
		785	* likely was suspended in set_stacklevel, called from entersub.
		786	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		787	* so we ENTER here for symmetry
		788	*/
		789	ENTER;
522	}	790	}
523		791
524	static void	792	static void
		793	coro_destroy (pTHX_ struct coro *coro)
		794	{
		795	if (!IN_DESTRUCT)
		796	{
		797	/* restore all saved variables and stuff */
		798	LEAVE_SCOPE (0);
		799	assert (PL_tmps_floor == -1);
		800
		801	/* free all temporaries */
		802	FREETMPS;
		803	assert (PL_tmps_ix == -1);
		804
		805	/* unwind all extra stacks */
		806	POPSTACK_TO (PL_mainstack);
		807
		808	/* unwind main stack */
		809	dounwind (-1);
		810	}
		811
		812	SvREFCNT_dec (GvSV (PL_defgv));
		813	SvREFCNT_dec (GvAV (PL_defgv));
		814	SvREFCNT_dec (GvSV (PL_errgv));
		815	SvREFCNT_dec (PL_defoutgv);
		816	SvREFCNT_dec (PL_rs);
		817	SvREFCNT_dec (GvSV (irsgv));
		818
		819	SvREFCNT_dec (PL_diehook);
		820	SvREFCNT_dec (PL_warnhook);
		821
		822	SvREFCNT_dec (coro->saved_deffh);
		823	SvREFCNT_dec (coro->throw);
		824
		825	coro_destroy_stacks (aTHX);
		826	}
		827
		828	static void
525	free_coro_mortal ()	829	free_coro_mortal (pTHX)
526	{	830	{
527	if (coro_mortal)	831	if (expect_true (coro_mortal))
528	{	832	{
529	SvREFCNT_dec (coro_mortal);	833	SvREFCNT_dec (coro_mortal);
530	coro_mortal = 0;	834	coro_mortal = 0;
531	}	835	}
532	}	836	}
533		837
		838	static int
		839	runops_trace (pTHX)
		840	{
		841	COP *oldcop = 0;
		842	int oldcxix = -2;
		843	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		844	coro_cctx *cctx = coro->cctx;
		845
		846	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		847	{
		848	PERL_ASYNC_CHECK ();
		849
		850	if (cctx->flags & CC_TRACE_ALL)
		851	{
		852	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		853	{
		854	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		855	SV bot, top;
		856	AV av = newAV (); / return values */
		857	SV **cb;
		858	dSP;
		859
		860	GV *gv = CvGV (cx->blk_sub.cv);
		861	SV *fullname = sv_2mortal (newSV (0));
		862	if (isGV (gv))
		863	gv_efullname3 (fullname, gv, 0);
		864
		865	bot = PL_stack_base + cx->blk_oldsp + 1;
		866	top = cx->blk_gimme == G_ARRAY ? SP + 1
		867	: cx->blk_gimme == G_SCALAR ? bot + 1
		868	: bot;
		869
		870	av_extend (av, top - bot);
		871	while (bot < top)
		872	av_push (av, SvREFCNT_inc (*bot++));
		873
		874	PL_runops = RUNOPS_DEFAULT;
		875	ENTER;
		876	SAVETMPS;
		877	EXTEND (SP, 3);
		878	PUSHMARK (SP);
		879	PUSHs (&PL_sv_no);
		880	PUSHs (fullname);
		881	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		882	PUTBACK;
		883	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		884	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		885	SPAGAIN;
		886	FREETMPS;
		887	LEAVE;
		888	PL_runops = runops_trace;
		889	}
		890
		891	if (oldcop != PL_curcop)
		892	{
		893	oldcop = PL_curcop;
		894
		895	if (PL_curcop != &PL_compiling)
		896	{
		897	SV **cb;
		898
		899	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		900	{
		901	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		902
		903	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		904	{
		905	runops_proc_t old_runops = PL_runops;
		906	dSP;
		907	GV *gv = CvGV (cx->blk_sub.cv);
		908	SV *fullname = sv_2mortal (newSV (0));
		909
		910	if (isGV (gv))
		911	gv_efullname3 (fullname, gv, 0);
		912
		913	PL_runops = RUNOPS_DEFAULT;
		914	ENTER;
		915	SAVETMPS;
		916	EXTEND (SP, 3);
		917	PUSHMARK (SP);
		918	PUSHs (&PL_sv_yes);
		919	PUSHs (fullname);
		920	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		921	PUTBACK;
		922	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		923	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		924	SPAGAIN;
		925	FREETMPS;
		926	LEAVE;
		927	PL_runops = runops_trace;
		928	}
		929
		930	oldcxix = cxstack_ix;
		931	}
		932
		933	if (cctx->flags & CC_TRACE_LINE)
		934	{
		935	dSP;
		936
		937	PL_runops = RUNOPS_DEFAULT;
		938	ENTER;
		939	SAVETMPS;
		940	EXTEND (SP, 3);
		941	PL_runops = RUNOPS_DEFAULT;
		942	PUSHMARK (SP);
		943	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		944	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		945	PUTBACK;
		946	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		947	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		948	SPAGAIN;
		949	FREETMPS;
		950	LEAVE;
		951	PL_runops = runops_trace;
		952	}
		953	}
		954	}
		955	}
		956	}
		957
		958	TAINT_NOT;
		959	return 0;
		960	}
		961
		962	/* inject a fake call to Coro::State::_cctx_init into the execution */
		963	/* _cctx_init should be careful, as it could be called at almost any time */
		964	/* during execution of a perl program */
534	static void NOINLINE	965	static void NOINLINE
535	prepare_cctx (coro_cctx *cctx)	966	cctx_prepare (pTHX_ coro_cctx *cctx)
536	{	967	{
537	dSP;	968	dSP;
538	LOGOP myop;	969	LOGOP myop;
539		970
		971	PL_top_env = &PL_start_env;
		972
		973	if (cctx->flags & CC_TRACE)
		974	PL_runops = runops_trace;
		975
540	Zero (&myop, 1, LOGOP);	976	Zero (&myop, 1, LOGOP);
541	myop.op_next = PL_op;	977	myop.op_next = PL_op;
542	myop.op_flags = OPf_WANT_VOID;	978	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
543
544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545		979
546	PUSHMARK (SP);	980	PUSHMARK (SP);
		981	EXTEND (SP, 2);
		982	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	983	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548	PUTBACK;	984	PUTBACK;
		985	PL_op = (OP *)&myop;
549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	986	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550	SPAGAIN;	987	SPAGAIN;
551	}	988	}
552		989
		990	/*
		991	* this is a _very_ stripped down perl interpreter ;)
		992	*/
553	static void	993	static void
554	coro_run (void *arg)	994	cctx_run (void *arg)
555	{	995	{
		996	dTHX;
		997
556	/* coro_run is the alternative epilogue of transfer() */	998	/* cctx_run is the alternative tail of transfer(), so unlock here. */
557	UNLOCK;	999	UNLOCK;
558		1000
		1001	/* we now skip the entersub that lead to transfer() */
		1002	PL_op = PL_op->op_next;
		1003
		1004	/* inject a fake subroutine call to cctx_init */
		1005	cctx_prepare (aTHX_ (coro_cctx *)arg);
		1006
		1007	/* somebody or something will hit me for both perl_run and PL_restartop */
		1008	PL_restartop = PL_op;
		1009	perl_run (PL_curinterp);
		1010
559	/*	1011	/*
560	* this is a _very_ stripped down perl interpreter ;)	1012	* If perl-run returns we assume exit() was being called or the coro
		1013	* fell off the end, which seems to be the only valid (non-bug)
		1014	* reason for perl_run to return. We try to exit by jumping to the
		1015	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1016	* coroutine as Coro has no such concept
561	*/	1017	*/
562	PL_top_env = &PL_start_env;	1018	PL_top_env = main_top_env;
563		1019	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
564	/* inject call to cctx_init */
565	prepare_cctx ((coro_cctx *)arg);
566
567	/* somebody will hit me for both perl_run and PL_restartop */
568	perl_run (PL_curinterp);
569
570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571	abort ();
572	}	1020	}
573		1021
574	static coro_cctx *	1022	static coro_cctx *
575	cctx_new ()	1023	cctx_new ()
576	{	1024	{
577	coro_cctx *cctx;	1025	coro_cctx *cctx;
		1026	void *stack_start;
		1027	size_t stack_size;
578		1028
579	++cctx_count;	1029	++cctx_count;
580		1030
581	New (0, cctx, 1, coro_cctx);	1031	Newz (0, cctx, 1, coro_cctx);
582		1032
583	#if HAVE_MMAP	1033	#if HAVE_MMAP
584
585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	1034	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
586	/* mmap suppsedly does allocate-on-write for us */	1035	/* mmap supposedly does allocate-on-write for us */
587	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1036	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588		1037
589	if (cctx->sptr == (void *)-1)	1038	if (cctx->sptr != (void *)-1)
590	{
591	perror ("FATAL: unable to mmap stack for coroutine");
592	_exit (EXIT_FAILURE);
593	}	1039	{
594
595	# if STACKGUARD	1040	# if CORO_STACKGUARD
596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	1041	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
597	# endif	1042	# endif
		1043	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		1044	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		1045	cctx->flags \|= CC_MAPPED;
		1046	}
		1047	else
		1048	#endif
		1049	{
		1050	cctx->ssize = coro_stacksize * (long)sizeof (long);
		1051	New (0, cctx->sptr, coro_stacksize, long);
598		1052
599	#else
600
601	cctx->ssize = STACKSIZE * (long)sizeof (long);
602	New (0, cctx->sptr, STACKSIZE, long);
603
604	if (!cctx->sptr)	1053	if (!cctx->sptr)
605	{	1054	{
606	perror ("FATAL: unable to malloc stack for coroutine");	1055	perror ("FATAL: unable to allocate stack for coroutine");
607	_exit (EXIT_FAILURE);	1056	_exit (EXIT_FAILURE);
608	}	1057	}
609		1058
610	#endif	1059	stack_start = cctx->sptr;
		1060	stack_size = cctx->ssize;
		1061	}
611		1062
612	#if USE_VALGRIND	1063	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
613	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1064	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
614	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
615	cctx->ssize + (char *)cctx->sptr
616	);
617	#endif
618
619	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
620		1065
621	return cctx;	1066	return cctx;
622	}	1067	}
623		1068
624	static void	1069	static void
…		…
627	if (!cctx)	1072	if (!cctx)
628	return;	1073	return;
629		1074
630	--cctx_count;	1075	--cctx_count;
631		1076
632	#if USE_VALGRIND	1077	#if CORO_USE_VALGRIND
633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1078	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
634	#endif	1079	#endif
635		1080
636	#if HAVE_MMAP	1081	#if HAVE_MMAP
		1082	if (cctx->flags & CC_MAPPED)
637	munmap (cctx->sptr, cctx->ssize);	1083	munmap (cctx->sptr, cctx->ssize);
638	#else	1084	else
		1085	#endif
639	Safefree (cctx->sptr);	1086	Safefree (cctx->sptr);
640	#endif
641		1087
642	Safefree (cctx);	1088	Safefree (cctx);
643	}	1089	}
644		1090
		1091	/* wether this cctx should be destructed */
		1092	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1093
645	static coro_cctx *	1094	static coro_cctx *
646	cctx_get ()	1095	cctx_get (pTHX)
647	{	1096	{
648	coro_cctx *cctx;	1097	while (expect_true (cctx_first))
649
650	if (cctx_first)
651	{	1098	{
652	cctx = cctx_first;	1099	coro_cctx *cctx = cctx_first;
653	cctx_first = cctx->next;	1100	cctx_first = cctx->next;
654	--cctx_idle;	1101	--cctx_idle;
655	}	1102
656	else	1103	if (expect_true (!CCTX_EXPIRED (cctx)))
657	{	1104	return cctx;
658	cctx = cctx_new ();	1105
659	PL_op = PL_op->op_next;	1106	cctx_destroy (cctx);
660	}	1107	}
661		1108
662	return cctx;	1109	return cctx_new ();
663	}	1110	}
664		1111
665	static void	1112	static void
666	cctx_put (coro_cctx *cctx)	1113	cctx_put (coro_cctx *cctx)
667	{	1114	{
668	/* free another cctx if overlimit */	1115	/* free another cctx if overlimit */
669	if (cctx_idle >= MAX_IDLE_CCTX)	1116	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
670	{	1117	{
671	coro_cctx *first = cctx_first;	1118	coro_cctx *first = cctx_first;
672	cctx_first = first->next;	1119	cctx_first = first->next;
673	--cctx_idle;	1120	--cctx_idle;
674		1121
675	assert (!first->inuse);
676	cctx_destroy (first);	1122	cctx_destroy (first);
677	}	1123	}
678		1124
679	++cctx_idle;	1125	++cctx_idle;
680	cctx->next = cctx_first;	1126	cctx->next = cctx_first;
681	cctx_first = cctx;	1127	cctx_first = cctx;
682	}	1128	}
683		1129
684	/* never call directly, always through the coro_state_transfer global variable */	1130	/ coroutine switching ***************************************************/
		1131
		1132	static void
		1133	transfer_check (pTHX_ struct coro prev, struct coro next)
		1134	{
		1135	if (expect_true (prev != next))
		1136	{
		1137	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1138	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1139
		1140	if (expect_false (next->flags & CF_RUNNING))
		1141	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1142
		1143	if (expect_false (next->flags & CF_DESTROYED))
		1144	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1145
		1146	#if !PERL_VERSION_ATLEAST (5,10,0)
		1147	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1148	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1149	#endif
		1150	}
		1151	}
		1152
		1153	/* always use the TRANSFER macro */
685	static void NOINLINE	1154	static void NOINLINE
686	transfer (struct coro prev, struct coro next, int flags)	1155	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
687	{	1156	{
688	dSTACKLEVEL;	1157	dSTACKLEVEL;
		1158	static volatile int has_throw;
689		1159
690	/* sometimes transfer is only called to set idle_sp */	1160	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	1161	if (expect_false (!next))
		1162	{
692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1163	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1164	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1165	}
693	else if (prev != next)	1166	else if (expect_true (prev != next))
694	{	1167	{
695	coro_cctx *prev__cctx;	1168	coro_cctx *prev__cctx;
696		1169
697	if (prev->flags & CF_NEW)	1170	if (expect_false (prev->flags & CF_NEW))
698	{	1171	{
699	/* create a new empty context */	1172	/* create a new empty context */
700	Newz (0, prev->cctx, 1, coro_cctx);	1173	Newz (0, prev->cctx, 1, coro_cctx);
701	prev->cctx->inuse = 1;
702	prev->flags &= ~CF_NEW;	1174	prev->flags &= ~CF_NEW;
703	prev->flags \|= CF_RUNNING;	1175	prev->flags \|= CF_RUNNING;
704	}	1176	}
705		1177
706	/TODO: must not croak here /
707	if (!prev->flags & CF_RUNNING)
708	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
709
710	if (next->flags & CF_RUNNING)
711	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
712
713	prev->flags &= ~CF_RUNNING;	1178	prev->flags &= ~CF_RUNNING;
714	next->flags \|= CF_RUNNING;	1179	next->flags \|= CF_RUNNING;
715		1180
716	LOCK;	1181	LOCK;
717		1182
		1183	/* first get rid of the old state */
		1184	save_perl (aTHX_ prev);
		1185
718	if (next->flags & CF_NEW)	1186	if (expect_false (next->flags & CF_NEW))
719	{	1187	{
720	/* need to start coroutine */	1188	/* need to start coroutine */
721	next->flags &= ~CF_NEW;	1189	next->flags &= ~CF_NEW;
722	/* first get rid of the old state */
723	SAVE (prev, -1);
724	/* setup coroutine call */	1190	/* setup coroutine call */
725	setup_coro (next);	1191	coro_setup (aTHX_ next);
726	/* need a new stack */
727	assert (!next->stack);
728	}	1192	}
729	else	1193	else
730	{	1194	load_perl (aTHX_ next);
731	/* coroutine already started */
732	SAVE (prev, flags);
733	LOAD (next);
734	}
735		1195
736	prev__cctx = prev->cctx;	1196	prev__cctx = prev->cctx;
737		1197
738	/* possibly "free" the cctx */	1198	/* possibly "free" the cctx */
		1199	if (expect_true (
739	if (prev__cctx->idle_sp == STACKLEVEL)	1200	prev__cctx->idle_sp == STACKLEVEL
		1201	&& !(prev__cctx->flags & CC_TRACE)
		1202	&& !force_cctx
		1203	))
740	{	1204	{
741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1205	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
742	assert (PL_top_env == prev__cctx->top_env);	1206	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
743		1207
744	prev->cctx = 0;	1208	prev->cctx = 0;
745		1209
		1210	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1211	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1212	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1213	if (!next->cctx)
		1214	next->cctx = cctx_get (aTHX);
		1215
746	cctx_put (prev__cctx);	1216	cctx_put (prev__cctx);
747	prev__cctx->inuse = 0;
748	}	1217	}
749		1218
		1219	++next->usecount;
		1220
750	if (!next->cctx)	1221	if (expect_true (!next->cctx))
751	{
752	next->cctx = cctx_get ();	1222	next->cctx = cctx_get (aTHX);
753	assert (!next->cctx->inuse);
754	next->cctx->inuse = 1;
755	}
756		1223
		1224	has_throw = !!next->throw;
		1225
757	if (prev__cctx != next->cctx)	1226	if (expect_false (prev__cctx != next->cctx))
758	{	1227	{
759	prev__cctx->top_env = PL_top_env;	1228	prev__cctx->top_env = PL_top_env;
760	PL_top_env = next->cctx->top_env;	1229	PL_top_env = next->cctx->top_env;
761	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1230	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
762	}	1231	}
763		1232
764	free_coro_mortal ();	1233	free_coro_mortal (aTHX);
765
766	UNLOCK;	1234	UNLOCK;
		1235
		1236	if (expect_false (has_throw))
		1237	{
		1238	struct coro *coro = SvSTATE (coro_current);
		1239
		1240	if (coro->throw)
		1241	{
		1242	SV *exception = coro->throw;
		1243	coro->throw = 0;
		1244	sv_setsv (ERRSV, exception);
		1245	croak (0);
		1246	}
		1247	}
767	}	1248	}
768	}	1249	}
769		1250
770	struct transfer_args	1251	struct transfer_args
771	{	1252	{
772	struct coro prev, next;	1253	struct coro prev, next;
773	int flags;
774	};	1254	};
775		1255
		1256	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1257	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
777		1258
		1259	/ high level stuff ******************************************************/
		1260
778	static void	1261	static int
779	coro_state_destroy (struct coro *coro)	1262	coro_state_destroy (pTHX_ struct coro *coro)
780	{	1263	{
781	if (coro->refcnt--)	1264	if (coro->flags & CF_DESTROYED)
782	return;	1265	return 0;
		1266
		1267	coro->flags \|= CF_DESTROYED;
		1268
		1269	if (coro->flags & CF_READY)
		1270	{
		1271	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1272	/* alternative: look through all ready queues and remove the coro */
		1273	LOCK;
		1274	--coro_nready;
		1275	UNLOCK;
		1276	}
		1277	else
		1278	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
783		1279
784	if (coro->mainstack && coro->mainstack != main_mainstack)	1280	if (coro->mainstack && coro->mainstack != main_mainstack)
785	{	1281	{
786	struct coro temp;	1282	struct coro temp;
787		1283
788	if (coro->flags & CF_RUNNING)	1284	if (coro->flags & CF_RUNNING)
789	croak ("FATAL: tried to destroy currently running coroutine");	1285	croak ("FATAL: tried to destroy currently running coroutine");
790		1286
791	SAVE ((&temp), TRANSFER_SAVE_ALL);	1287	save_perl (aTHX_ &temp);
792	LOAD (coro);	1288	load_perl (aTHX_ coro);
793		1289
794	coro_destroy_stacks ();	1290	coro_destroy (aTHX_ coro);
795		1291
796	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1292	load_perl (aTHX_ &temp);
797		1293
798	coro->mainstack = 0;	1294	coro->slot = 0;
799	}	1295	}
800		1296
801	cctx_destroy (coro->cctx);	1297	cctx_destroy (coro->cctx);
802	SvREFCNT_dec (coro->args);	1298	SvREFCNT_dec (coro->args);
803	Safefree (coro);	1299
		1300	if (coro->next) coro->next->prev = coro->prev;
		1301	if (coro->prev) coro->prev->next = coro->next;
		1302	if (coro == coro_first) coro_first = coro->next;
		1303
		1304	return 1;
804	}	1305	}
805		1306
806	static int	1307	static int
807	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1308	coro_state_free (pTHX_ SV sv, MAGIC mg)
808	{	1309	{
809	struct coro coro = (struct coro )mg->mg_ptr;	1310	struct coro coro = (struct coro )mg->mg_ptr;
810	mg->mg_ptr = 0;	1311	mg->mg_ptr = 0;
811		1312
		1313	coro->hv = 0;
		1314
		1315	if (--coro->refcnt < 0)
		1316	{
812	coro_state_destroy (coro);	1317	coro_state_destroy (aTHX_ coro);
		1318	Safefree (coro);
		1319	}
813		1320
814	return 0;	1321	return 0;
815	}	1322	}
816		1323
817	static int	1324	static int
…		…
824	return 0;	1331	return 0;
825	}	1332	}
826		1333
827	static MGVTBL coro_state_vtbl = {	1334	static MGVTBL coro_state_vtbl = {
828	0, 0, 0, 0,	1335	0, 0, 0, 0,
829	coro_state_clear,	1336	coro_state_free,
830	0,	1337	0,
831	#ifdef MGf_DUP	1338	#ifdef MGf_DUP
832	coro_state_dup,	1339	coro_state_dup,
833	#else	1340	#else
834	# define MGf_DUP 0	1341	# define MGf_DUP 0
835	#endif	1342	#endif
836	};	1343	};
837		1344
838	static struct coro *
839	SvSTATE (SV *coro)
840	{
841	HV *stash;
842	MAGIC *mg;
843
844	if (SvROK (coro))
845	coro = SvRV (coro);
846
847	stash = SvSTASH (coro);
848	if (stash != coro_stash && stash != coro_state_stash)
849	{
850	/* very slow, but rare, check */
851	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
852	croak ("Coro::State object required");
853	}
854
855	mg = SvMAGIC (coro);
856	assert (mg->mg_type == PERL_MAGIC_ext);
857	return (struct coro *)mg->mg_ptr;
858	}
859
860	static void	1345	static void
861	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1346	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
862	{	1347	{
863	ta->prev = SvSTATE (prev);	1348	ta->prev = SvSTATE (prev_sv);
864	ta->next = SvSTATE (next);	1349	ta->next = SvSTATE (next_sv);
865	ta->flags = flags;	1350	TRANSFER_CHECK (*ta);
866	}	1351	}
867		1352
868	static void	1353	static void
869	api_transfer (SV prev, SV next, int flags)	1354	api_transfer (SV prev_sv, SV next_sv)
870	{	1355	{
		1356	dTHX;
871	struct transfer_args ta;	1357	struct transfer_args ta;
872		1358
873	prepare_transfer (&ta, prev, next, flags);	1359	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
874	TRANSFER (ta);	1360	TRANSFER (ta, 1);
875	}	1361	}
876		1362
877	/ Coro ******************************************************************/	1363	/ Coro ******************************************************************/
878		1364
879	#define PRIO_MAX 3
880	#define PRIO_HIGH 1
881	#define PRIO_NORMAL 0
882	#define PRIO_LOW -1
883	#define PRIO_IDLE -3
884	#define PRIO_MIN -4
885
886	/* for Coro.pm */
887	static SV *coro_current;
888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
889	static int coro_nready;
890
891	static void	1365	static void
892	coro_enq (SV *coro_sv)	1366	coro_enq (pTHX_ SV *coro_sv)
893	{	1367	{
894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1368	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
895	coro_nready++;
896	}	1369	}
897		1370
898	static SV *	1371	static SV *
899	coro_deq (int min_prio)	1372	coro_deq (pTHX)
900	{	1373	{
901	int prio = PRIO_MAX - PRIO_MIN;	1374	int prio;
902		1375
903	min_prio -= PRIO_MIN;
904	if (min_prio < 0)
905	min_prio = 0;
906
907	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1376	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
908	if (AvFILLp (coro_ready [prio]) >= 0)	1377	if (AvFILLp (coro_ready [prio]) >= 0)
909	{
910	coro_nready--;
911	return av_shift (coro_ready [prio]);	1378	return av_shift (coro_ready [prio]);
912	}
913		1379
914	return 0;	1380	return 0;
915	}	1381	}
916		1382
917	static int	1383	static int
918	api_ready (SV *coro_sv)	1384	api_ready (SV *coro_sv)
919	{	1385	{
		1386	dTHX;
920	struct coro *coro;	1387	struct coro *coro;
		1388	SV *hook;
921		1389
922	if (SvROK (coro_sv))	1390	if (SvROK (coro_sv))
923	coro_sv = SvRV (coro_sv);	1391	coro_sv = SvRV (coro_sv);
924		1392
925	coro = SvSTATE (coro_sv);	1393	coro = SvSTATE (coro_sv);
926		1394
927	if (coro->flags & CF_READY)	1395	if (coro->flags & CF_READY)
928	return 0;	1396	return 0;
929		1397
930	#if 0 /* this is actually harmless */
931	if (coro->flags & CF_RUNNING)
932	croak ("Coro::ready called on currently running coroutine");
933	#endif
934
935	coro->flags \|= CF_READY;	1398	coro->flags \|= CF_READY;
936		1399
937	LOCK;	1400	LOCK;
		1401
		1402	hook = coro_nready ? 0 : coro_readyhook;
		1403
938	coro_enq (SvREFCNT_inc (coro_sv));	1404	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1405	++coro_nready;
		1406
939	UNLOCK;	1407	UNLOCK;
		1408
		1409	if (hook)
		1410	{
		1411	dSP;
		1412
		1413	ENTER;
		1414	SAVETMPS;
		1415
		1416	PUSHMARK (SP);
		1417	PUTBACK;
		1418	call_sv (hook, G_DISCARD);
		1419	SPAGAIN;
		1420
		1421	FREETMPS;
		1422	LEAVE;
		1423	}
940		1424
941	return 1;	1425	return 1;
942	}	1426	}
943		1427
944	static int	1428	static int
945	api_is_ready (SV *coro_sv)	1429	api_is_ready (SV *coro_sv)
946	{	1430	{
		1431	dTHX;
947	return !!SvSTATE (coro_sv)->flags & CF_READY;	1432	return !!(SvSTATE (coro_sv)->flags & CF_READY);
948	}	1433	}
949		1434
950	static void	1435	static void
951	prepare_schedule (struct transfer_args *ta)	1436	prepare_schedule (pTHX_ struct transfer_args *ta)
952	{	1437	{
953	SV prev, next;	1438	SV prev_sv, next_sv;
954		1439
955	for (;;)	1440	for (;;)
956	{	1441	{
957	LOCK;	1442	LOCK;
958	next = coro_deq (PRIO_MIN);	1443	next_sv = coro_deq (aTHX);
		1444
		1445	/* nothing to schedule: call the idle handler */
		1446	if (expect_false (!next_sv))
		1447	{
		1448	dSP;
		1449	UNLOCK;
		1450
		1451	ENTER;
		1452	SAVETMPS;
		1453
		1454	PUSHMARK (SP);
		1455	PUTBACK;
		1456	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1457	SPAGAIN;
		1458
		1459	FREETMPS;
		1460	LEAVE;
		1461	continue;
		1462	}
		1463
		1464	ta->next = SvSTATE (next_sv);
		1465
		1466	/* cannot transfer to destroyed coros, skip and look for next */
		1467	if (expect_false (ta->next->flags & CF_DESTROYED))
		1468	{
		1469	UNLOCK;
		1470	SvREFCNT_dec (next_sv);
		1471	/* coro_nready is already taken care of by destroy */
		1472	continue;
		1473	}
		1474
		1475	--coro_nready;
959	UNLOCK;	1476	UNLOCK;
960
961	if (next)
962	break;	1477	break;
963
964	{
965	dSP;
966
967	ENTER;
968	SAVETMPS;
969
970	PUSHMARK (SP);
971	PUTBACK;
972	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
973
974	FREETMPS;
975	LEAVE;
976	}	1478	}
977	}
978
979	prev = SvRV (coro_current);
980	SvRV_set (coro_current, next);
981		1479
982	/* free this only after the transfer */	1480	/* free this only after the transfer */
		1481	prev_sv = SvRV (coro_current);
		1482	ta->prev = SvSTATE (prev_sv);
		1483	TRANSFER_CHECK (*ta);
		1484	assert (ta->next->flags & CF_READY);
		1485	ta->next->flags &= ~CF_READY;
		1486	SvRV_set (coro_current, next_sv);
		1487
983	LOCK;	1488	LOCK;
984	free_coro_mortal ();	1489	free_coro_mortal (aTHX);
		1490	coro_mortal = prev_sv;
985	UNLOCK;	1491	UNLOCK;
986	coro_mortal = prev;
987
988	assert (!SvROK(prev));//D
989	assert (!SvROK(next));//D
990
991	ta->prev = SvSTATE (prev);
992	ta->next = SvSTATE (next);
993	ta->flags = TRANSFER_SAVE_ALL;
994
995	assert (ta->flags & CF_READY);
996	ta->next->flags &= ~CF_READY;
997	}	1492	}
998		1493
999	static void	1494	static void
1000	prepare_cede (struct transfer_args *ta)	1495	prepare_cede (pTHX_ struct transfer_args *ta)
1001	{	1496	{
1002	api_ready (coro_current);	1497	api_ready (coro_current);
1003
1004	prepare_schedule (ta);	1498	prepare_schedule (aTHX_ ta);
		1499	}
		1500
		1501	static int
		1502	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1503	{
		1504	if (coro_nready)
		1505	{
		1506	SV *prev = SvRV (coro_current);
		1507	prepare_schedule (aTHX_ ta);
		1508	api_ready (prev);
		1509	return 1;
		1510	}
		1511	else
		1512	return 0;
1005	}	1513	}
1006		1514
1007	static void	1515	static void
1008	api_schedule (void)	1516	api_schedule (void)
1009	{	1517	{
		1518	dTHX;
1010	struct transfer_args ta;	1519	struct transfer_args ta;
1011		1520
1012	prepare_schedule (&ta);	1521	prepare_schedule (aTHX_ &ta);
1013	TRANSFER (ta);	1522	TRANSFER (ta, 1);
		1523	}
		1524
		1525	static int
		1526	api_cede (void)
		1527	{
		1528	dTHX;
		1529	struct transfer_args ta;
		1530
		1531	prepare_cede (aTHX_ &ta);
		1532
		1533	if (expect_true (ta.prev != ta.next))
		1534	{
		1535	TRANSFER (ta, 1);
		1536	return 1;
		1537	}
		1538	else
		1539	return 0;
		1540	}
		1541
		1542	static int
		1543	api_cede_notself (void)
		1544	{
		1545	dTHX;
		1546	struct transfer_args ta;
		1547
		1548	if (prepare_cede_notself (aTHX_ &ta))
		1549	{
		1550	TRANSFER (ta, 1);
		1551	return 1;
		1552	}
		1553	else
		1554	return 0;
1014	}	1555	}
1015		1556
1016	static void	1557	static void
1017	api_cede (void)	1558	api_trace (SV *coro_sv, int flags)
1018	{	1559	{
1019	struct transfer_args ta;	1560	dTHX;
		1561	struct coro *coro = SvSTATE (coro_sv);
1020		1562
1021	prepare_cede (&ta);	1563	if (flags & CC_TRACE)
1022	TRANSFER (ta);	1564	{
1023	}	1565	if (!coro->cctx)
		1566	coro->cctx = cctx_new ();
		1567	else if (!(coro->cctx->flags & CC_TRACE))
		1568	croak ("cannot enable tracing on coroutine with custom stack");
1024		1569
		1570	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1571	}
		1572	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1573	{
		1574	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1575
		1576	if (coro->flags & CF_RUNNING)
		1577	PL_runops = RUNOPS_DEFAULT;
		1578	else
		1579	coro->slot->runops = RUNOPS_DEFAULT;
		1580	}
		1581	}
		1582
1025	MODULE = Coro::State PACKAGE = Coro::State	1583	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1026		1584
1027	PROTOTYPES: DISABLE	1585	PROTOTYPES: DISABLE
1028		1586
1029	BOOT:	1587	BOOT:
1030	{	1588	{
1031	#ifdef USE_ITHREADS	1589	#ifdef USE_ITHREADS
1032	MUTEX_INIT (&coro_mutex);	1590	MUTEX_INIT (&coro_mutex);
1033	#endif	1591	#endif
1034	BOOT_PAGESIZE;	1592	BOOT_PAGESIZE;
1035		1593
		1594	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1595	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1596
		1597	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1598	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1599	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1600	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1601
		1602	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1603	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1604	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1605
1036	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1606	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1037		1607
1038	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1608	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1039	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1609	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1040	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1610	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1611	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1041		1612
1042	main_mainstack = PL_mainstack;	1613	main_mainstack = PL_mainstack;
		1614	main_top_env = PL_top_env;
		1615
		1616	while (main_top_env->je_prev)
		1617	main_top_env = main_top_env->je_prev;
1043		1618
1044	coroapi.ver = CORO_API_VERSION;	1619	coroapi.ver = CORO_API_VERSION;
		1620	coroapi.rev = CORO_API_REVISION;
1045	coroapi.transfer = api_transfer;	1621	coroapi.transfer = api_transfer;
1046		1622
1047	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1623	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1048	}	1624	}
1049		1625
1050	SV *	1626	SV *
1051	new (char *klass, ...)	1627	new (char *klass, ...)
1052	CODE:	1628	CODE:
1053	{	1629	{
1054	struct coro *coro;	1630	struct coro *coro;
		1631	MAGIC *mg;
1055	HV *hv;	1632	HV *hv;
1056	int i;	1633	int i;
1057		1634
1058	Newz (0, coro, 1, struct coro);	1635	Newz (0, coro, 1, struct coro);
1059	coro->args = newAV ();	1636	coro->args = newAV ();
1060	coro->flags = CF_NEW;	1637	coro->flags = CF_NEW;
1061		1638
		1639	if (coro_first) coro_first->prev = coro;
		1640	coro->next = coro_first;
		1641	coro_first = coro;
		1642
1062	hv = newHV ();	1643	coro->hv = hv = newHV ();
1063	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1644	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1645	mg->mg_flags \|= MGf_DUP;
1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1646	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1065		1647
		1648	av_extend (coro->args, items - 1);
1066	for (i = 1; i < items; i++)	1649	for (i = 1; i < items; i++)
1067	av_push (coro->args, newSVsv (ST (i)));	1650	av_push (coro->args, newSVsv (ST (i)));
1068	}	1651	}
1069	OUTPUT:	1652	OUTPUT:
1070	RETVAL	1653	RETVAL
1071		1654
		1655	# these not obviously related functions are all rolled into the same xs
		1656	# function to increase chances that they all will call transfer with the same
		1657	# stack offset
1072	void	1658	void
1073	_set_stacklevel (...)	1659	_set_stacklevel (...)
1074	ALIAS:	1660	ALIAS:
1075	Coro::State::transfer = 1	1661	Coro::State::transfer = 1
1076	Coro::schedule = 2	1662	Coro::schedule = 2
1077	Coro::cede = 3	1663	Coro::cede = 3
		1664	Coro::cede_notself = 4
1078	CODE:	1665	CODE:
1079	{	1666	{
1080	struct transfer_args ta;	1667	struct transfer_args ta;
1081		1668
		1669	PUTBACK;
1082	switch (ix)	1670	switch (ix)
1083	{	1671	{
1084	case 0:	1672	case 0:
1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1673	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1086	ta.next = 0;	1674	ta.next = 0;
1087	ta.flags = TRANSFER_SET_STACKLEVEL;
1088	break;	1675	break;
1089		1676
1090	case 1:	1677	case 1:
1091	if (items != 3)	1678	if (items != 2)
1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1679	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1093		1680
1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1681	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1095	break;	1682	break;
1096		1683
1097	case 2:	1684	case 2:
1098	prepare_schedule (&ta);	1685	prepare_schedule (aTHX_ &ta);
1099	break;	1686	break;
1100		1687
1101	case 3:	1688	case 3:
1102	prepare_cede (&ta);	1689	prepare_cede (aTHX_ &ta);
		1690	break;
		1691
		1692	case 4:
		1693	if (!prepare_cede_notself (aTHX_ &ta))
		1694	XSRETURN_EMPTY;
		1695
1103	break;	1696	break;
1104	}	1697	}
		1698	SPAGAIN;
1105		1699
		1700	BARRIER;
		1701	PUTBACK;
1106	TRANSFER (ta);	1702	TRANSFER (ta, 0);
		1703	SPAGAIN; /* might be the sp of a different coroutine now */
		1704	/* be extra careful not to ever do anything after TRANSFER */
1107	}	1705	}
		1706
		1707	bool
		1708	_destroy (SV *coro_sv)
		1709	CODE:
		1710	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
		1711	OUTPUT:
		1712	RETVAL
1108		1713
1109	void	1714	void
1110	_clone_state_from (SV dst, SV src)
1111	CODE:
1112	{
1113	struct coro *coro_src = SvSTATE (src);
1114
1115	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1116
1117	++coro_src->refcnt;
1118	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1119	}
1120
1121	void
1122	_exit (code)	1715	_exit (int code)
1123	int code
1124	PROTOTYPE: $	1716	PROTOTYPE: $
1125	CODE:	1717	CODE:
1126	_exit (code);	1718	_exit (code);
		1719
		1720	int
		1721	cctx_stacksize (int new_stacksize = 0)
		1722	CODE:
		1723	RETVAL = coro_stacksize;
		1724	if (new_stacksize)
		1725	coro_stacksize = new_stacksize;
		1726	OUTPUT:
		1727	RETVAL
1127		1728
1128	int	1729	int
1129	cctx_count ()	1730	cctx_count ()
1130	CODE:	1731	CODE:
1131	RETVAL = cctx_count;	1732	RETVAL = cctx_count;
…		…
1137	CODE:	1738	CODE:
1138	RETVAL = cctx_idle;	1739	RETVAL = cctx_idle;
1139	OUTPUT:	1740	OUTPUT:
1140	RETVAL	1741	RETVAL
1141		1742
		1743	void
		1744	list ()
		1745	PPCODE:
		1746	{
		1747	struct coro *coro;
		1748	for (coro = coro_first; coro; coro = coro->next)
		1749	if (coro->hv)
		1750	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1751	}
		1752
		1753	void
		1754	call (Coro::State coro, SV *coderef)
		1755	ALIAS:
		1756	eval = 1
		1757	CODE:
		1758	{
		1759	if (coro->mainstack)
		1760	{
		1761	struct coro temp;
		1762
		1763	if (!(coro->flags & CF_RUNNING))
		1764	{
		1765	PUTBACK;
		1766	save_perl (aTHX_ &temp);
		1767	load_perl (aTHX_ coro);
		1768	}
		1769
		1770	{
		1771	dSP;
		1772	ENTER;
		1773	SAVETMPS;
		1774	PUTBACK;
		1775	PUSHSTACK;
		1776	PUSHMARK (SP);
		1777
		1778	if (ix)
		1779	eval_sv (coderef, 0);
		1780	else
		1781	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1782
		1783	POPSTACK;
		1784	SPAGAIN;
		1785	FREETMPS;
		1786	LEAVE;
		1787	PUTBACK;
		1788	}
		1789
		1790	if (!(coro->flags & CF_RUNNING))
		1791	{
		1792	save_perl (aTHX_ coro);
		1793	load_perl (aTHX_ &temp);
		1794	SPAGAIN;
		1795	}
		1796	}
		1797	}
		1798
		1799	SV *
		1800	is_ready (Coro::State coro)
		1801	PROTOTYPE: $
		1802	ALIAS:
		1803	is_ready = CF_READY
		1804	is_running = CF_RUNNING
		1805	is_new = CF_NEW
		1806	is_destroyed = CF_DESTROYED
		1807	CODE:
		1808	RETVAL = boolSV (coro->flags & ix);
		1809	OUTPUT:
		1810	RETVAL
		1811
		1812	void
		1813	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1814
		1815	SV *
		1816	has_stack (Coro::State coro)
		1817	PROTOTYPE: $
		1818	CODE:
		1819	RETVAL = boolSV (!!coro->cctx);
		1820	OUTPUT:
		1821	RETVAL
		1822
		1823	int
		1824	is_traced (Coro::State coro)
		1825	PROTOTYPE: $
		1826	CODE:
		1827	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1828	OUTPUT:
		1829	RETVAL
		1830
		1831	IV
		1832	rss (Coro::State coro)
		1833	PROTOTYPE: $
		1834	ALIAS:
		1835	usecount = 1
		1836	CODE:
		1837	switch (ix)
		1838	{
		1839	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1840	case 1: RETVAL = coro->usecount; break;
		1841	}
		1842	OUTPUT:
		1843	RETVAL
		1844
		1845	void
		1846	force_cctx ()
		1847	CODE:
		1848	struct coro *coro = SvSTATE (coro_current);
		1849	coro->cctx->idle_sp = 0;
		1850
1142	MODULE = Coro::State PACKAGE = Coro	1851	MODULE = Coro::State PACKAGE = Coro
1143		1852
1144	BOOT:	1853	BOOT:
1145	{	1854	{
1146	int i;	1855	int i;
1147		1856
		1857	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1858	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1859	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1860
		1861	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1862	SvREADONLY_on (coro_current);
		1863
1148	coro_stash = gv_stashpv ("Coro", TRUE);	1864	coro_stash = gv_stashpv ("Coro", TRUE);
1149		1865
1150	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1866	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1151	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1867	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1868	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1869	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1870	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1871	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1156		1872
1157	coro_current = get_sv ("Coro::current", FALSE);
1158	SvREADONLY_on (coro_current);
1159
1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1873	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1161	coro_ready[i] = newAV ();	1874	coro_ready[i] = newAV ();
1162		1875
1163	{	1876	{
1164	SV *sv = perl_get_sv("Coro::API", 1);	1877	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1878	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1165		1879
1166	coroapi.schedule = api_schedule;	1880	coroapi.schedule = api_schedule;
1167	coroapi.cede = api_cede;	1881	coroapi.cede = api_cede;
		1882	coroapi.cede_notself = api_cede_notself;
1168	coroapi.ready = api_ready;	1883	coroapi.ready = api_ready;
1169	coroapi.is_ready = api_is_ready;	1884	coroapi.is_ready = api_is_ready;
1170	coroapi.nready = &coro_nready;	1885	coroapi.nready = &coro_nready;
1171	coroapi.current = coro_current;	1886	coroapi.current = coro_current;
1172		1887
1173	GCoroAPI = &coroapi;	1888	GCoroAPI = &coroapi;
1174	sv_setiv (sv, (IV)&coroapi);	1889	sv_setiv (sv, (IV)&coroapi);
1175	SvREADONLY_on (sv);	1890	SvREADONLY_on (sv);
1176	}	1891	}
1177	}	1892	}
		1893
		1894	void
		1895	_set_current (SV *current)
		1896	PROTOTYPE: $
		1897	CODE:
		1898	SvREFCNT_dec (SvRV (coro_current));
		1899	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1900
		1901	void
		1902	_set_readyhook (SV *hook)
		1903	PROTOTYPE: $
		1904	CODE:
		1905	LOCK;
		1906	if (coro_readyhook)
		1907	SvREFCNT_dec (coro_readyhook);
		1908	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1909	UNLOCK;
1178		1910
1179	int	1911	int
1180	prio (Coro::State coro, int newprio = 0)	1912	prio (Coro::State coro, int newprio = 0)
1181	ALIAS:	1913	ALIAS:
1182	nice = 1	1914	nice = 1
…		…
1185	RETVAL = coro->prio;	1917	RETVAL = coro->prio;
1186		1918
1187	if (items > 1)	1919	if (items > 1)
1188	{	1920	{
1189	if (ix)	1921	if (ix)
1190	newprio += coro->prio;	1922	newprio = coro->prio - newprio;
1191		1923
1192	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1924	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1193	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1925	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1194		1926
1195	coro->prio = newprio;	1927	coro->prio = newprio;
1196	}	1928	}
1197	}	1929	}
		1930	OUTPUT:
		1931	RETVAL
1198		1932
1199	SV *	1933	SV *
1200	ready (SV *self)	1934	ready (SV *self)
1201	PROTOTYPE: $	1935	PROTOTYPE: $
1202	CODE:	1936	CODE:
1203	RETVAL = boolSV (api_ready (self));	1937	RETVAL = boolSV (api_ready (self));
1204	OUTPUT:	1938	OUTPUT:
1205	RETVAL	1939	RETVAL
1206		1940
1207	SV *
1208	is_ready (SV *self)
1209	PROTOTYPE: $
1210	CODE:
1211	RETVAL = boolSV (api_is_ready (self));
1212	OUTPUT:
1213	RETVAL
1214
1215	int	1941	int
1216	nready (...)	1942	nready (...)
1217	PROTOTYPE:	1943	PROTOTYPE:
1218	CODE:	1944	CODE:
1219	RETVAL = coro_nready;	1945	RETVAL = coro_nready;
1220	OUTPUT:	1946	OUTPUT:
1221	RETVAL	1947	RETVAL
1222		1948
1223	void	1949	void
1224	_set_current (SV *current)	1950	throw (Coro::State self, SV *throw = &PL_sv_undef)
1225	PROTOTYPE: $	1951	PROTOTYPE: $;$
		1952	CODE:
		1953	SvREFCNT_dec (self->throw);
		1954	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1955
		1956	void
		1957	swap_defsv (Coro::State self)
		1958	PROTOTYPE: $
		1959	ALIAS:
		1960	swap_defav = 1
		1961	CODE:
		1962	if (!self->slot)
		1963	croak ("cannot swap state with coroutine that has no saved state");
		1964	else
		1965	{
		1966	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1967	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1968
		1969	SV tmp = src; src = dst; *dst = tmp;
		1970	}
		1971
		1972	# for async_pool speedup
		1973	void
		1974	_pool_1 (SV *cb)
1226	CODE:	1975	CODE:
1227	SvREFCNT_dec (SvRV (coro_current));	1976	{
1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1977	struct coro *coro = SvSTATE (coro_current);
		1978	HV hv = (HV )SvRV (coro_current);
		1979	AV *defav = GvAV (PL_defgv);
		1980	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1981	AV *invoke_av;
		1982	int i, len;
		1983
		1984	if (!invoke)
		1985	{
		1986	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		1987	croak ("\3async_pool terminate\2\n");
		1988	}
		1989
		1990	SvREFCNT_dec (coro->saved_deffh);
		1991	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1992
		1993	hv_store (hv, "desc", sizeof ("desc") - 1,
		1994	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1995
		1996	invoke_av = (AV *)SvRV (invoke);
		1997	len = av_len (invoke_av);
		1998
		1999	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2000
		2001	if (len > 0)
		2002	{
		2003	av_fill (defav, len - 1);
		2004	for (i = 0; i < len; ++i)
		2005	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		2006	}
		2007
		2008	SvREFCNT_dec (invoke);
		2009	}
		2010
		2011	void
		2012	_pool_2 (SV *cb)
		2013	CODE:
		2014	{
		2015	struct coro *coro = SvSTATE (coro_current);
		2016
		2017	sv_setsv (cb, &PL_sv_undef);
		2018
		2019	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		2020	coro->saved_deffh = 0;
		2021
		2022	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2023	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2024	{
		2025	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
		2026	croak ("\3async_pool terminate\2\n");
		2027	}
		2028
		2029	av_clear (GvAV (PL_defgv));
		2030	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2031	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2032
		2033	coro->prio = 0;
		2034
		2035	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2036	api_trace (coro_current, 0);
		2037
		2038	av_push (av_async_pool, newSVsv (coro_current));
		2039	}
		2040
1229		2041
1230	MODULE = Coro::State PACKAGE = Coro::AIO	2042	MODULE = Coro::State PACKAGE = Coro::AIO
1231		2043
1232	SV *	2044	SV *
1233	_get_state ()	2045	_get_state ()
1234	CODE:	2046	CODE:
1235	{	2047	{
1236	struct {	2048	struct io_state *data;
1237	int errorno;
1238	int laststype;
1239	int laststatval;
1240	Stat_t statcache;
1241	} data;
1242		2049
		2050	RETVAL = newSV (sizeof (struct io_state));
		2051	data = (struct io_state *)SvPVX (RETVAL);
		2052	SvCUR_set (RETVAL, sizeof (struct io_state));
		2053	SvPOK_only (RETVAL);
		2054
1243	data.errorno = errno;	2055	data->errorno = errno;
1244	data.laststype = PL_laststype;	2056	data->laststype = PL_laststype;
1245	data.laststatval = PL_laststatval;	2057	data->laststatval = PL_laststatval;
1246	data.statcache = PL_statcache;	2058	data->statcache = PL_statcache;
1247
1248	RETVAL = newSVpvn ((char *)&data, sizeof data);
1249	}	2059	}
1250	OUTPUT:	2060	OUTPUT:
1251	RETVAL	2061	RETVAL
1252		2062
1253	void	2063	void
1254	_set_state (char *data_)	2064	_set_state (char *data_)
1255	PROTOTYPE: $	2065	PROTOTYPE: $
1256	CODE:	2066	CODE:
1257	{	2067	{
1258	struct {	2068	struct io_state data = (void )data_;
1259	int errorno;
1260	int laststype;
1261	int laststatval;
1262	Stat_t statcache;
1263	} data = (void )data_;
1264		2069
1265	errno = data->errorno;	2070	errno = data->errorno;
1266	PL_laststype = data->laststype;	2071	PL_laststype = data->laststype;
1267	PL_laststatval = data->laststatval;	2072	PL_laststatval = data->laststatval;
1268	PL_statcache = data->statcache;	2073	PL_statcache = data->statcache;
1269	}	2074	}
		2075
		2076
		2077	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2078
		2079	BOOT:
		2080	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2081
		2082	SV *
		2083	_schedule ()
		2084	PROTOTYPE: @
		2085	CODE:
		2086	{
		2087	static int incede;
		2088	fprintf (stderr, "_schedule\n");//D
		2089
		2090	api_cede_notself ();
		2091
		2092	++incede;
		2093	while (coro_nready >= incede && api_cede ())
		2094	;
		2095
		2096	sv_setsv (sv_activity, &PL_sv_undef);
		2097	if (coro_nready >= incede)
		2098	{
		2099	PUSHMARK (SP);
		2100	PUTBACK;
		2101	fprintf (stderr, "call act %d >= %d\n", coro_nready, incede);//D
		2102	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
		2103	SPAGAIN;
		2104	}
		2105
		2106	--incede;
		2107	}
		2108

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Comparing Coro/Coro/State.xs (file contents): Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs. Revision 1.233 by root, Fri May 9 22:04:37 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.233 by root, Fri May 9 22:04:37 2008 UTC