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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.242 by root, Thu Aug 14 12:48:20 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>
45	#include <assert.h>	14	#include <assert.h>
46		15
47	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	16	#ifdef WIN32
48	# undef STACKGUARD	17	# undef setjmp
49	#endif	18	# undef longjmp
50		19	# undef _exit
51	#ifndef STACKGUARD	20	# define setjmp _setjmp // deep magic, don't ask
52	# define STACKGUARD 0	21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
53	#endif	23	#endif
54		24
55	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
56	# include <unistd.h>	26	# include <unistd.h>
57	# include <sys/mman.h>	27	# include <sys/mman.h>
73	#else	43	#else
74	# define PAGESIZE 0	44	# define PAGESIZE 0
75	# define BOOT_PAGESIZE (void)0	45	# define BOOT_PAGESIZE (void)0
76	#endif	46	#endif
77		47
78	/* The next macro should declare a variable stacklevel that contains and approximation	48	#if CORO_USE_VALGRIND
79	* to the current C stack pointer. Its property is that it changes with each call	49	# include <valgrind/valgrind.h>
80	* 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. */
81	#define dSTACKLEVEL int stacklevel	118	#define dSTACKLEVEL volatile char stacklevel
82	#define STACKLEVEL ((void *)&stacklevel)	119	#define STACKLEVEL ((void *)&stacklevel)
83		120
84	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
85		122
86	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
87	# 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))
88	#else	127	#else
89	# define attribute(x)	128	# define attribute(x)
		129	# define BARRIER
		130	# define expect(expr,value) (expr)
90	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
91		135
92	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
93		137
94	#include "CoroAPI.h"	138	#include "CoroAPI.h"
95		139
…		…
100	#else	144	#else
101	# define LOCK (void)0	145	# define LOCK (void)0
102	# define UNLOCK (void)0	146	# define UNLOCK (void)0
103	#endif	147	#endif
104		148
		149	/* helper storage struct for Coro::AIO */
105	struct io_state	150	struct io_state
106	{	151	{
107	int errorno;	152	int errorno;
108	I32 laststype;	153	I32 laststype;
109	int laststatval;	154	int laststatval;
110	Stat_t statcache;	155	Stat_t statcache;
111	};	156	};
112		157
		158	static size_t coro_stacksize = CORO_STACKSIZE;
113	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
114	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;
115	static HV coro_state_stash, coro_stash;	162	static HV coro_state_stash, coro_stash;
116	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;
117		178
118	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
119	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	};
120		190
121	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
122	typedef struct coro_cctx {	192	typedef struct coro_cctx {
123	struct coro_cctx *next;	193	struct coro_cctx *next;
124		194
125	/* the stack */	195	/* the stack */
126	void *sptr;	196	void *sptr;
127	long ssize; /* positive == mmap, otherwise malloc */	197	size_t ssize;
128		198
129	/* cpu state */	199	/* cpu state */
130	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 */
131	JMPENV *top_env;	202	JMPENV *top_env;
132	coro_context cctx;	203	coro_context cctx;
133		204
134	int inuse;
135
136	#if USE_VALGRIND	205	#if CORO_USE_VALGRIND
137	int valgrind_id;	206	int valgrind_id;
138	#endif	207	#endif
		208	unsigned char flags;
139	} coro_cctx;	209	} coro_cctx;
140		210
141	enum {	211	enum {
142	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
143	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
144	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 */
145	};	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))
146		230
147	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
148	struct coro {	232	struct coro {
149	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
150	coro_cctx *cctx;	234	coro_cctx *cctx;
151		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots slot; / basically the saved sp */
		239
152	/* data associated with this coroutine (initial args) */	240	AV args; / data associated with this coroutine (initial args) */
153	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
154	int refcnt;
155	int save; /* CORO_SAVE flags */
156	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
		243	HV hv; / the perl hash associated with this coro, if any */
157		244
158	/* optionally saved, might be zero */	245	/* statistics */
159	AV defav; / @_ */	246	int usecount; /* number of transfers to this coro */
160	SV defsv; / $_ */
161	SV errsv; / $@ */
162	SV irssv; / $/ */
163	SV irssv_sv; / real $/ cache */
164
165	#define VAR(name,type) type name;
166	# include "state.h"
167	#undef VAR
168		247
169	/* coro process data */	248	/* coro process data */
170	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;
171	};	257	};
172		258
173	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
174	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
175		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
176	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 *
177	coro_clone_padlist (CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
178	{	312	{
179	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
180	AV newpadlist, newpad;	314	AV newpadlist, newpad;
181		315
182	newpadlist = newAV ();	316	newpadlist = newAV ();
183	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
184	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
185	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
186	#else	320	#else
187	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
188	#endif	322	#endif
189	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
194		328
195	return newpadlist;	329	return newpadlist;
196	}	330	}
197		331
198	static void	332	static void
199	free_padlist (AV *padlist)	333	free_padlist (pTHX_ AV *padlist)
200	{	334	{
201	/* may be during global destruction */	335	/* may be during global destruction */
202	if (SvREFCNT (padlist))	336	if (SvREFCNT (padlist))
203	{	337	{
204	I32 i = AvFILLp (padlist);	338	I32 i = AvFILLp (padlist);
…		…
225	AV *padlist;	359	AV *padlist;
226	AV av = (AV )mg->mg_obj;	360	AV av = (AV )mg->mg_obj;
227		361
228	/* casting is fun. */	362	/* casting is fun. */
229	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	363	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
230	free_padlist (padlist);	364	free_padlist (aTHX_ padlist);
231
232	SvREFCNT_dec (av);
233		365
234	return 0;	366	return 0;
235	}	367	}
236		368
237	#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
238		371
239	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	};
240		376
241	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
242	SvMAGIC (cv) \	378	SvMAGIC (sv) \
243	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
244	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
245	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
246	: 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))
247		412
248	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
249	static void	414	static void
250	get_padlist (CV *cv)	415	get_padlist (pTHX_ CV *cv)
251	{	416	{
252	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
253	AV *av;	418	AV *av;
254		419
255	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
256	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	422	else
258	{	423	{
259	#if 0	424	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	426	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	427	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	428	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	429	SvREFCNT_dec (cp);
265	#else	430	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	431	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	432	#endif
268	}	433	}
269	}	434	}
270		435
271	static void	436	static void
272	put_padlist (CV *cv)	437	put_padlist (pTHX_ CV *cv)
273	{	438	{
274	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
275	AV *av;	440	AV *av;
276		441
277	if (!mg)	442	if (expect_false (!mg))
278	{	443	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
279	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
280	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
281	mg->mg_virtual = &vtbl_coro;
282	mg->mg_obj = (SV *)newAV ();
283	}
284		444
285	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
286		446
287	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
288	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
289		449
290	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291	}	451	}
292		452
293	#define SB do {	453	/ load & save, init *****************************************************/
294	#define SE } while (0)
295
296	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
297		454
298	static void	455	static void
299	load_perl (Coro__State c)	456	load_perl (pTHX_ Coro__State c)
300	{	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
301	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
302	# include "state.h"	469	# include "state.h"
303	#undef VAR	470	#undef VAR
304
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
308	if (c->irssv)
309	{
310	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
311	SvREFCNT_dec (c->irssv);
312	else
313	{
314	REPLACE_SV (PL_rs, c->irssv);
315	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
316	sv_setsv (c->irssv_sv, PL_rs);
317	}
318	}
319		471
320	{	472	{
321	dSP;	473	dSP;
		474
322	CV *cv;	475	CV *cv;
323		476
324	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
325	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
326	{	479	{
327	put_padlist (cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
328	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
329	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
330	}	483	}
331		484
332	PUTBACK;	485	PUTBACK;
333	}	486	}
334	}	487	}
335		488
336	static void	489	static void
337	save_perl (Coro__State c)	490	save_perl (pTHX_ Coro__State c)
338	{	491	{
339	{	492	{
340	dSP;	493	dSP;
341	I32 cxix = cxstack_ix;	494	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	495	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	498	/*
346	* 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
347	* (and reinitialize) all cv's in the whole callchain :(	500	* (and reinitialize) all cv's in the whole callchain :(
348	*/	501	*/
349		502
350	PUSHs (Nullsv);	503	XPUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
352	for (;;)	505	for (;;)
353	{	506	{
354	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
355	{	508	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
357		510
358	if (CxTYPE (cx) == CXt_SUB)	511	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
359	{	512	{
360	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
361		514
362	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
363	{	516	{
364	EXTEND (SP, 3);	517	EXTEND (SP, 3);
365
366	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
367	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
368	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
369		521
370	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
371	get_padlist (cv);	523	get_padlist (aTHX_ cv);
372	}	524	}
373	}	525	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE (cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	526	}
383		527
384	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
385	break;	529	break;
386		530
387	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
388	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
389	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
390	}	534	}
391		535
392	PUTBACK;	536	PUTBACK;
393	}	537	}
394		538
395	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	539	/* allocate some space on the context stack for our purposes */
396	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
397	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
398	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	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 */
399		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
400	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
401	# include "state.h"	562	# include "state.h"
402	#undef VAR	563	#undef VAR
		564	}
403	}	565	}
404		566
405	/*	567	/*
406	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
407	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
408	* on the (sometimes correct) assumption that coroutines do	570	* on the (sometimes correct) assumption that coroutines do
409	* not usually need a lot of stackspace.	571	* not usually need a lot of stackspace.
410	*/	572	*/
		573	#if CORO_PREFER_PERL_FUNCTIONS
		574	# define coro_init_stacks init_stacks
		575	#else
411	static void	576	static void
412	coro_init_stacks ()	577	coro_init_stacks (pTHX)
413	{	578	{
414	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	579	PL_curstackinfo = new_stackinfo(32, 8);
415	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
416	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
417	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
418		583
419	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
420	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
421	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
422		587
423	New(50,PL_tmps_stack,128,SV*);	588	New(50,PL_tmps_stack,32,SV*);
424	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
425	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
426	PL_tmps_max = 128;	591	PL_tmps_max = 32;
427		592
428	New(54,PL_markstack,32,I32);	593	New(54,PL_markstack,16,I32);
429	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
430	PL_markstack_max = PL_markstack + 32;	595	PL_markstack_max = PL_markstack + 16;
431		596
432	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
433	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
434	#endif	599	#endif
435		600
436	New(54,PL_scopestack,32,I32);	601	New(54,PL_scopestack,8,I32);
437	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
438	PL_scopestack_max = 32;	603	PL_scopestack_max = 8;
439		604
440	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
441	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
442	PL_savestack_max = 64;	607	PL_savestack_max = 24;
443		608
444	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
445	New(54,PL_retstack,16,OP*);	610	New(54,PL_retstack,4,OP*);
446	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
447	PL_retstack_max = 16;	612	PL_retstack_max = 4;
448	#endif	613	#endif
449	}	614	}
		615	#endif
450		616
451	/*	617	/*
452	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
453	*/	619	*/
454	static void	620	static void
455	coro_destroy_stacks ()	621	coro_destroy_stacks (pTHX)
456	{	622	{
457	if (!IN_DESTRUCT)
458	{
459	/* is this ugly, I ask? */
460	LEAVE_SCOPE (0);
461
462	/* sure it is, but more important: is it correct?? :/ */
463	FREETMPS;
464
465	/POPSTACK_TO (PL_mainstack);//D//use/
466	}
467
468	while (PL_curstackinfo->si_next)	623	while (PL_curstackinfo->si_next)
469	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
470		625
471	while (PL_curstackinfo)	626	while (PL_curstackinfo)
472	{	627	{
473	PERL_SI *p = PL_curstackinfo->si_prev;	628	PERL_SI *p = PL_curstackinfo->si_prev;
474		629
475	{ /D//remove/
476	dSP;
477	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
478	PUTBACK; /* possibly superfluous */
479	}
480
481	if (!IN_DESTRUCT)	630	if (!IN_DESTRUCT)
482	{
483	dounwind (-1);/D//remove/
484	SvREFCNT_dec (PL_curstackinfo->si_stack);	631	SvREFCNT_dec (PL_curstackinfo->si_stack);
485	}
486		632
487	Safefree (PL_curstackinfo->si_cxstack);	633	Safefree (PL_curstackinfo->si_cxstack);
488	Safefree (PL_curstackinfo);	634	Safefree (PL_curstackinfo);
489	PL_curstackinfo = p;	635	PL_curstackinfo = p;
490	}	636	}
491		637
492	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
493	Safefree (PL_markstack);	639	Safefree (PL_markstack);
494	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
495	Safefree (PL_savestack);	641	Safefree (PL_savestack);
496	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
497	Safefree (PL_retstack);	643	Safefree (PL_retstack);
498	#endif	644	#endif
499	}	645	}
500		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	static int (orig_sigelem_clr) (pTHX_ SV sv, MAGIC *mg);
		689
		690	/* apparently < 5.8.8 */
		691	#ifndef MgPV_nolen_const
		692	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		693	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		694	(const char*)(mg)->mg_ptr)
		695	#endif
		696
		697	/*
		698	* This overrides the default magic get method of %SIG elements.
		699	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		700	* and instead of tryign to save and restore the hash elements, we just provide
		701	* readback here.
		702	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		703	* not expecting this to actually change the hook. This is a potential problem
		704	* when a schedule happens then, but we ignore this.
		705	*/
		706	static int
		707	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		708	{
		709	const char *s = MgPV_nolen_const (mg);
		710
		711	if (*s == '_')
		712	{
		713	SV **svp = 0;
		714
		715	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		716	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		717
		718	if (svp)
		719	{
		720	sv_setsv (sv, svp ? svp : &PL_sv_undef);
		721	return 0;
		722	}
		723	}
		724
		725	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		726	}
		727
		728	static int
		729	coro_sigelem_clr (pTHX_ SV sv, MAGIC mg)
		730	{
		731	const char *s = MgPV_nolen_const (mg);
		732
		733	if (*s == '_')
		734	{
		735	SV **svp = 0;
		736
		737	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		738	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		739
		740	if (svp)
		741	{
		742	SV old = svp;
		743	*svp = 0;
		744	SvREFCNT_dec (old);
		745	return 0;
		746	}
		747	}
		748
		749	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		750	}
		751
		752	static int
		753	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		754	{
		755	const char *s = MgPV_nolen_const (mg);
		756
		757	if (*s == '_')
		758	{
		759	SV **svp = 0;
		760
		761	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		762	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		763
		764	if (svp)
		765	{
		766	SV old = svp;
		767	*svp = newSVsv (sv);
		768	SvREFCNT_dec (old);
		769	return 0;
		770	}
		771	}
		772
		773	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		774	}
		775
501	static void	776	static void
502	setup_coro (struct coro *coro)	777	coro_setup (pTHX_ struct coro *coro)
503	{	778	{
504	/*	779	/*
505	* emulate part of the perl startup here.	780	* emulate part of the perl startup here.
506	*/	781	*/
507
508	coro_init_stacks ();	782	coro_init_stacks (aTHX);
509		783
		784	PL_runops = RUNOPS_DEFAULT;
510	PL_curcop = &PL_compiling;	785	PL_curcop = &PL_compiling;
511	PL_in_eval = EVAL_NULL;	786	PL_in_eval = EVAL_NULL;
		787	PL_comppad = 0;
512	PL_curpm = 0;	788	PL_curpm = 0;
		789	PL_curpad = 0;
513	PL_localizing = 0;	790	PL_localizing = 0;
514	PL_dirty = 0;	791	PL_dirty = 0;
515	PL_restartop = 0;	792	PL_restartop = 0;
		793	#if PERL_VERSION_ATLEAST (5,10,0)
		794	PL_parser = 0;
		795	#endif
		796
		797	/* recreate the die/warn hooks */
		798	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		799	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		800
		801	GvSV (PL_defgv) = newSV (0);
		802	GvAV (PL_defgv) = coro->args; coro->args = 0;
		803	GvSV (PL_errgv) = newSV (0);
		804	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		805	PL_rs = newSVsv (GvSV (irsgv));
		806	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
516		807
517	{	808	{
518	dSP;	809	dSP;
519	LOGOP myop;	810	LOGOP myop;
520		811
521	SvREFCNT_dec (GvAV (PL_defgv));
522	GvAV (PL_defgv) = coro->args; coro->args = 0;
523
524	Zero (&myop, 1, LOGOP);	812	Zero (&myop, 1, LOGOP);
525	myop.op_next = Nullop;	813	myop.op_next = Nullop;
526	myop.op_flags = OPf_WANT_VOID;	814	myop.op_flags = OPf_WANT_VOID;
527		815
528	PUSHMARK (SP);	816	PUSHMARK (SP);
529	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	817	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
530	PUTBACK;	818	PUTBACK;
531	PL_op = (OP *)&myop;	819	PL_op = (OP *)&myop;
532	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	820	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
533	SPAGAIN;	821	SPAGAIN;
534	}	822	}
535		823
536	ENTER; /* necessary e.g. for dounwind */	824	/* this newly created coroutine might be run on an existing cctx which most
		825	* likely was suspended in set_stacklevel, called from entersub.
		826	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		827	* so we ENTER here for symmetry
		828	*/
		829	ENTER;
537	}	830	}
538		831
539	static void	832	static void
		833	coro_destroy (pTHX_ struct coro *coro)
		834	{
		835	if (!IN_DESTRUCT)
		836	{
		837	/* restore all saved variables and stuff */
		838	LEAVE_SCOPE (0);
		839	assert (PL_tmps_floor == -1);
		840
		841	/* free all temporaries */
		842	FREETMPS;
		843	assert (PL_tmps_ix == -1);
		844
		845	/* unwind all extra stacks */
		846	POPSTACK_TO (PL_mainstack);
		847
		848	/* unwind main stack */
		849	dounwind (-1);
		850	}
		851
		852	SvREFCNT_dec (GvSV (PL_defgv));
		853	SvREFCNT_dec (GvAV (PL_defgv));
		854	SvREFCNT_dec (GvSV (PL_errgv));
		855	SvREFCNT_dec (PL_defoutgv);
		856	SvREFCNT_dec (PL_rs);
		857	SvREFCNT_dec (GvSV (irsgv));
		858
		859	SvREFCNT_dec (PL_diehook);
		860	SvREFCNT_dec (PL_warnhook);
		861
		862	SvREFCNT_dec (coro->saved_deffh);
		863	SvREFCNT_dec (coro->throw);
		864
		865	coro_destroy_stacks (aTHX);
		866	}
		867
		868	static void
540	free_coro_mortal ()	869	free_coro_mortal (pTHX)
541	{	870	{
542	if (coro_mortal)	871	if (expect_true (coro_mortal))
543	{	872	{
544	SvREFCNT_dec (coro_mortal);	873	SvREFCNT_dec (coro_mortal);
545	coro_mortal = 0;	874	coro_mortal = 0;
546	}	875	}
547	}	876	}
548		877
		878	static int
		879	runops_trace (pTHX)
		880	{
		881	COP *oldcop = 0;
		882	int oldcxix = -2;
		883	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		884	coro_cctx *cctx = coro->cctx;
		885
		886	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		887	{
		888	PERL_ASYNC_CHECK ();
		889
		890	if (cctx->flags & CC_TRACE_ALL)
		891	{
		892	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		893	{
		894	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		895	SV bot, top;
		896	AV av = newAV (); / return values */
		897	SV **cb;
		898	dSP;
		899
		900	GV *gv = CvGV (cx->blk_sub.cv);
		901	SV *fullname = sv_2mortal (newSV (0));
		902	if (isGV (gv))
		903	gv_efullname3 (fullname, gv, 0);
		904
		905	bot = PL_stack_base + cx->blk_oldsp + 1;
		906	top = cx->blk_gimme == G_ARRAY ? SP + 1
		907	: cx->blk_gimme == G_SCALAR ? bot + 1
		908	: bot;
		909
		910	av_extend (av, top - bot);
		911	while (bot < top)
		912	av_push (av, SvREFCNT_inc (*bot++));
		913
		914	PL_runops = RUNOPS_DEFAULT;
		915	ENTER;
		916	SAVETMPS;
		917	EXTEND (SP, 3);
		918	PUSHMARK (SP);
		919	PUSHs (&PL_sv_no);
		920	PUSHs (fullname);
		921	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		922	PUTBACK;
		923	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		924	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		925	SPAGAIN;
		926	FREETMPS;
		927	LEAVE;
		928	PL_runops = runops_trace;
		929	}
		930
		931	if (oldcop != PL_curcop)
		932	{
		933	oldcop = PL_curcop;
		934
		935	if (PL_curcop != &PL_compiling)
		936	{
		937	SV **cb;
		938
		939	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		940	{
		941	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		942
		943	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		944	{
		945	runops_proc_t old_runops = PL_runops;
		946	dSP;
		947	GV *gv = CvGV (cx->blk_sub.cv);
		948	SV *fullname = sv_2mortal (newSV (0));
		949
		950	if (isGV (gv))
		951	gv_efullname3 (fullname, gv, 0);
		952
		953	PL_runops = RUNOPS_DEFAULT;
		954	ENTER;
		955	SAVETMPS;
		956	EXTEND (SP, 3);
		957	PUSHMARK (SP);
		958	PUSHs (&PL_sv_yes);
		959	PUSHs (fullname);
		960	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		961	PUTBACK;
		962	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		963	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		964	SPAGAIN;
		965	FREETMPS;
		966	LEAVE;
		967	PL_runops = runops_trace;
		968	}
		969
		970	oldcxix = cxstack_ix;
		971	}
		972
		973	if (cctx->flags & CC_TRACE_LINE)
		974	{
		975	dSP;
		976
		977	PL_runops = RUNOPS_DEFAULT;
		978	ENTER;
		979	SAVETMPS;
		980	EXTEND (SP, 3);
		981	PL_runops = RUNOPS_DEFAULT;
		982	PUSHMARK (SP);
		983	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		984	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		985	PUTBACK;
		986	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		987	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		988	SPAGAIN;
		989	FREETMPS;
		990	LEAVE;
		991	PL_runops = runops_trace;
		992	}
		993	}
		994	}
		995	}
		996	}
		997
		998	TAINT_NOT;
		999	return 0;
		1000	}
		1001
549	/* inject a fake call to Coro::State::_cctx_init into the execution */	1002	/* inject a fake call to Coro::State::_cctx_init into the execution */
		1003	/* _cctx_init should be careful, as it could be called at almost any time */
		1004	/* during execution of a perl program */
550	static void NOINLINE	1005	static void NOINLINE
551	prepare_cctx (coro_cctx *cctx)	1006	cctx_prepare (pTHX_ coro_cctx *cctx)
552	{	1007	{
553	dSP;	1008	dSP;
554	LOGOP myop;	1009	LOGOP myop;
		1010
		1011	PL_top_env = &PL_start_env;
		1012
		1013	if (cctx->flags & CC_TRACE)
		1014	PL_runops = runops_trace;
555		1015
556	Zero (&myop, 1, LOGOP);	1016	Zero (&myop, 1, LOGOP);
557	myop.op_next = PL_op;	1017	myop.op_next = PL_op;
558	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	1018	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
559		1019
…		…
565	PL_op = (OP *)&myop;	1025	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1026	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	1027	SPAGAIN;
568	}	1028	}
569		1029
		1030	/*
		1031	* this is a _very_ stripped down perl interpreter ;)
		1032	*/
570	static void	1033	static void
571	coro_run (void *arg)	1034	cctx_run (void *arg)
572	{	1035	{
		1036	dTHX;
		1037
573	/* coro_run is the alternative tail of transfer(), so unlock here. */	1038	/* cctx_run is the alternative tail of transfer(), so unlock here. */
574	UNLOCK;	1039	UNLOCK;
575		1040
576	/*	1041	/* we now skip the entersub that lead to transfer() */
577	* this is a _very_ stripped down perl interpreter ;)	1042	PL_op = PL_op->op_next;
578	*/
579	PL_top_env = &PL_start_env;
580		1043
581	/* inject call to cctx_init */	1044	/* inject a fake subroutine call to cctx_init */
582	prepare_cctx ((coro_cctx *)arg);	1045	cctx_prepare (aTHX_ (coro_cctx *)arg);
583		1046
584	/* somebody will hit me for both perl_run and PL_restartop */	1047	/* somebody or something will hit me for both perl_run and PL_restartop */
585	PL_restartop = PL_op;	1048	PL_restartop = PL_op;
586	perl_run (PL_curinterp);	1049	perl_run (PL_curinterp);
587		1050
588	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	1051	/*
589	abort ();	1052	* If perl-run returns we assume exit() was being called or the coro
		1053	* fell off the end, which seems to be the only valid (non-bug)
		1054	* reason for perl_run to return. We try to exit by jumping to the
		1055	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1056	* coroutine as Coro has no such concept
		1057	*/
		1058	PL_top_env = main_top_env;
		1059	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
590	}	1060	}
591		1061
592	static coro_cctx *	1062	static coro_cctx *
593	cctx_new ()	1063	cctx_new ()
594	{	1064	{
595	coro_cctx *cctx;	1065	coro_cctx *cctx;
		1066	void *stack_start;
		1067	size_t stack_size;
596		1068
597	++cctx_count;	1069	++cctx_count;
598		1070
599	Newz (0, cctx, 1, coro_cctx);	1071	Newz (0, cctx, 1, coro_cctx);
600		1072
601	#if HAVE_MMAP	1073	#if HAVE_MMAP
602
603	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	1074	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
604	/* mmap supposedly does allocate-on-write for us */	1075	/* mmap supposedly does allocate-on-write for us */
605	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1076	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
606		1077
607	if (cctx->sptr == (void *)-1)	1078	if (cctx->sptr != (void *)-1)
608	{
609	perror ("FATAL: unable to mmap stack for coroutine");
610	_exit (EXIT_FAILURE);
611	}	1079	{
612
613	# if STACKGUARD	1080	# if CORO_STACKGUARD
614	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	1081	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
615	# endif	1082	# endif
		1083	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		1084	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		1085	cctx->flags \|= CC_MAPPED;
		1086	}
		1087	else
		1088	#endif
		1089	{
		1090	cctx->ssize = coro_stacksize * (long)sizeof (long);
		1091	New (0, cctx->sptr, coro_stacksize, long);
616		1092
617	#else
618
619	cctx->ssize = STACKSIZE * (long)sizeof (long);
620	New (0, cctx->sptr, STACKSIZE, long);
621
622	if (!cctx->sptr)	1093	if (!cctx->sptr)
623	{	1094	{
624	perror ("FATAL: unable to malloc stack for coroutine");	1095	perror ("FATAL: unable to allocate stack for coroutine");
625	_exit (EXIT_FAILURE);	1096	_exit (EXIT_FAILURE);
626	}	1097	}
627		1098
628	#endif	1099	stack_start = cctx->sptr;
		1100	stack_size = cctx->ssize;
		1101	}
629		1102
630	#if USE_VALGRIND	1103	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
631	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1104	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
632	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
633	cctx->ssize + (char *)cctx->sptr
634	);
635	#endif
636
637	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
638		1105
639	return cctx;	1106	return cctx;
640	}	1107	}
641		1108
642	static void	1109	static void
…		…
645	if (!cctx)	1112	if (!cctx)
646	return;	1113	return;
647		1114
648	--cctx_count;	1115	--cctx_count;
649		1116
650	#if USE_VALGRIND	1117	#if CORO_USE_VALGRIND
651	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1118	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
652	#endif	1119	#endif
653		1120
654	#if HAVE_MMAP	1121	#if HAVE_MMAP
		1122	if (cctx->flags & CC_MAPPED)
655	munmap (cctx->sptr, cctx->ssize);	1123	munmap (cctx->sptr, cctx->ssize);
656	#else	1124	else
		1125	#endif
657	Safefree (cctx->sptr);	1126	Safefree (cctx->sptr);
658	#endif
659		1127
660	Safefree (cctx);	1128	Safefree (cctx);
661	}	1129	}
662		1130
		1131	/* wether this cctx should be destructed */
		1132	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1133
663	static coro_cctx *	1134	static coro_cctx *
664	cctx_get ()	1135	cctx_get (pTHX)
665	{	1136	{
666	coro_cctx *cctx;	1137	while (expect_true (cctx_first))
667
668	if (cctx_first)
669	{	1138	{
670	cctx = cctx_first;	1139	coro_cctx *cctx = cctx_first;
671	cctx_first = cctx->next;	1140	cctx_first = cctx->next;
672	--cctx_idle;	1141	--cctx_idle;
673	}	1142
674	else	1143	if (expect_true (!CCTX_EXPIRED (cctx)))
675	{	1144	return cctx;
676	cctx = cctx_new ();	1145
677	PL_op = PL_op->op_next;	1146	cctx_destroy (cctx);
678	}	1147	}
679		1148
680	return cctx;	1149	return cctx_new ();
681	}	1150	}
682		1151
683	static void	1152	static void
684	cctx_put (coro_cctx *cctx)	1153	cctx_put (coro_cctx *cctx)
685	{	1154	{
686	/* free another cctx if overlimit */	1155	/* free another cctx if overlimit */
687	if (cctx_idle >= MAX_IDLE_CCTX)	1156	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
688	{	1157	{
689	coro_cctx *first = cctx_first;	1158	coro_cctx *first = cctx_first;
690	cctx_first = first->next;	1159	cctx_first = first->next;
691	--cctx_idle;	1160	--cctx_idle;
692		1161
693	assert (!first->inuse);
694	cctx_destroy (first);	1162	cctx_destroy (first);
695	}	1163	}
696		1164
697	++cctx_idle;	1165	++cctx_idle;
698	cctx->next = cctx_first;	1166	cctx->next = cctx_first;
699	cctx_first = cctx;	1167	cctx_first = cctx;
700	}	1168	}
701		1169
702	/* never call directly, always through the coro_state_transfer global variable */	1170	/ coroutine switching ***************************************************/
		1171
		1172	static void
		1173	transfer_check (pTHX_ struct coro prev, struct coro next)
		1174	{
		1175	if (expect_true (prev != next))
		1176	{
		1177	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1178	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1179
		1180	if (expect_false (next->flags & CF_RUNNING))
		1181	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1182
		1183	if (expect_false (next->flags & CF_DESTROYED))
		1184	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1185
		1186	#if !PERL_VERSION_ATLEAST (5,10,0)
		1187	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1188	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1189	#endif
		1190	}
		1191	}
		1192
		1193	/* always use the TRANSFER macro */
703	static void NOINLINE	1194	static void NOINLINE
704	transfer (struct coro prev, struct coro next)	1195	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
705	{	1196	{
706	dSTACKLEVEL;	1197	dSTACKLEVEL;
		1198	static volatile int has_throw;
707		1199
708	/* sometimes transfer is only called to set idle_sp */	1200	/* sometimes transfer is only called to set idle_sp */
709	if (!next)	1201	if (expect_false (!next))
710	{	1202	{
711	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1203	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
712	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	1204	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
713	}	1205	}
714	else if (prev != next)	1206	else if (expect_true (prev != next))
715	{	1207	{
716	coro_cctx *prev__cctx;	1208	coro_cctx *prev__cctx;
717		1209
718	if (prev->flags & CF_NEW)	1210	if (expect_false (prev->flags & CF_NEW))
719	{	1211	{
720	/* create a new empty context */	1212	/* create a new empty context */
721	Newz (0, prev->cctx, 1, coro_cctx);	1213	Newz (0, prev->cctx, 1, coro_cctx);
722	prev->cctx->inuse = 1;
723	prev->flags &= ~CF_NEW;	1214	prev->flags &= ~CF_NEW;
724	prev->flags \|= CF_RUNNING;	1215	prev->flags \|= CF_RUNNING;
725	}	1216	}
726		1217
727	/TODO: must not croak here /
728	if (!prev->flags & CF_RUNNING)
729	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
730
731	if (next->flags & CF_RUNNING)
732	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
733
734	prev->flags &= ~CF_RUNNING;	1218	prev->flags &= ~CF_RUNNING;
735	next->flags \|= CF_RUNNING;	1219	next->flags \|= CF_RUNNING;
736		1220
737	LOCK;	1221	LOCK;
738		1222
		1223	/* first get rid of the old state */
		1224	save_perl (aTHX_ prev);
		1225
739	if (next->flags & CF_NEW)	1226	if (expect_false (next->flags & CF_NEW))
740	{	1227	{
741	/* need to start coroutine */	1228	/* need to start coroutine */
742	next->flags &= ~CF_NEW;	1229	next->flags &= ~CF_NEW;
743	/* first get rid of the old state */
744	save_perl (prev);
745	/* setup coroutine call */	1230	/* setup coroutine call */
746	setup_coro (next);	1231	coro_setup (aTHX_ next);
747	/* need a new stack */
748	assert (!next->cctx);
749	}	1232	}
750	else	1233	else
751	{
752	/* coroutine already started */
753	save_perl (prev);
754	load_perl (next);	1234	load_perl (aTHX_ next);
755	}
756		1235
757	prev__cctx = prev->cctx;	1236	prev__cctx = prev->cctx;
758		1237
759	/* possibly "free" the cctx */	1238	/* possibly "free" the cctx */
		1239	if (expect_true (
760	if (prev__cctx->idle_sp == STACKLEVEL)	1240	prev__cctx->idle_sp == STACKLEVEL
		1241	&& !(prev__cctx->flags & CC_TRACE)
		1242	&& !force_cctx
		1243	))
761	{	1244	{
762	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1245	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
763	assert (PL_top_env == prev__cctx->top_env);	1246	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
764		1247
765	prev->cctx = 0;	1248	prev->cctx = 0;
766		1249
		1250	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1251	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1252	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1253	if (!next->cctx)
		1254	next->cctx = cctx_get (aTHX);
		1255
767	cctx_put (prev__cctx);	1256	cctx_put (prev__cctx);
768	prev__cctx->inuse = 0;
769	}	1257	}
770		1258
		1259	++next->usecount;
		1260
771	if (!next->cctx)	1261	if (expect_true (!next->cctx))
772	{
773	next->cctx = cctx_get ();	1262	next->cctx = cctx_get (aTHX);
774	assert (!next->cctx->inuse);
775	next->cctx->inuse = 1;
776	}
777		1263
		1264	has_throw = !!next->throw;
		1265
778	if (prev__cctx != next->cctx)	1266	if (expect_false (prev__cctx != next->cctx))
779	{	1267	{
780	prev__cctx->top_env = PL_top_env;	1268	prev__cctx->top_env = PL_top_env;
781	PL_top_env = next->cctx->top_env;	1269	PL_top_env = next->cctx->top_env;
782	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1270	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
783	}	1271	}
784		1272
785	free_coro_mortal ();	1273	free_coro_mortal (aTHX);
786
787	UNLOCK;	1274	UNLOCK;
		1275
		1276	if (expect_false (has_throw))
		1277	{
		1278	struct coro *coro = SvSTATE (coro_current);
		1279
		1280	if (coro->throw)
		1281	{
		1282	SV *exception = coro->throw;
		1283	coro->throw = 0;
		1284	sv_setsv (ERRSV, exception);
		1285	croak (0);
		1286	}
		1287	}
788	}	1288	}
789	}	1289	}
790		1290
791	struct transfer_args	1291	struct transfer_args
792	{	1292	{
793	struct coro prev, next;	1293	struct coro prev, next;
794	};	1294	};
795		1295
		1296	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
796	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1297	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
797		1298
		1299	/ high level stuff ******************************************************/
		1300
798	static void	1301	static int
799	coro_state_destroy (struct coro *coro)	1302	coro_state_destroy (pTHX_ struct coro *coro)
800	{	1303	{
801	if (coro->refcnt--)	1304	if (coro->flags & CF_DESTROYED)
802	return;	1305	return 0;
		1306
		1307	coro->flags \|= CF_DESTROYED;
		1308
		1309	if (coro->flags & CF_READY)
		1310	{
		1311	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1312	/* alternative: look through all ready queues and remove the coro */
		1313	LOCK;
		1314	--coro_nready;
		1315	UNLOCK;
		1316	}
		1317	else
		1318	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
803		1319
804	if (coro->mainstack && coro->mainstack != main_mainstack)	1320	if (coro->mainstack && coro->mainstack != main_mainstack)
805	{	1321	{
806	struct coro temp;	1322	struct coro temp;
807	Zero (&temp, 1, struct coro);
808	temp.save = CORO_SAVE_ALL;
809		1323
810	if (coro->flags & CF_RUNNING)	1324	if (coro->flags & CF_RUNNING)
811	croak ("FATAL: tried to destroy currently running coroutine");	1325	croak ("FATAL: tried to destroy currently running coroutine");
812		1326
813	save_perl (&temp);	1327	save_perl (aTHX_ &temp);
814	load_perl (coro);	1328	load_perl (aTHX_ coro);
815		1329
816	coro_destroy_stacks ();	1330	coro_destroy (aTHX_ coro);
817		1331
818	load_perl (&temp); /* this will get rid of defsv etc.. */	1332	load_perl (aTHX_ &temp);
819		1333
820	coro->mainstack = 0;	1334	coro->slot = 0;
821	}	1335	}
822		1336
823	cctx_destroy (coro->cctx);	1337	cctx_destroy (coro->cctx);
824	SvREFCNT_dec (coro->args);	1338	SvREFCNT_dec (coro->args);
825	Safefree (coro);	1339
		1340	if (coro->next) coro->next->prev = coro->prev;
		1341	if (coro->prev) coro->prev->next = coro->next;
		1342	if (coro == coro_first) coro_first = coro->next;
		1343
		1344	return 1;
826	}	1345	}
827		1346
828	static int	1347	static int
829	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1348	coro_state_free (pTHX_ SV sv, MAGIC mg)
830	{	1349	{
831	struct coro coro = (struct coro )mg->mg_ptr;	1350	struct coro coro = (struct coro )mg->mg_ptr;
832	mg->mg_ptr = 0;	1351	mg->mg_ptr = 0;
833		1352
		1353	coro->hv = 0;
		1354
		1355	if (--coro->refcnt < 0)
		1356	{
834	coro_state_destroy (coro);	1357	coro_state_destroy (aTHX_ coro);
		1358	Safefree (coro);
		1359	}
835		1360
836	return 0;	1361	return 0;
837	}	1362	}
838		1363
839	static int	1364	static int
…		…
846	return 0;	1371	return 0;
847	}	1372	}
848		1373
849	static MGVTBL coro_state_vtbl = {	1374	static MGVTBL coro_state_vtbl = {
850	0, 0, 0, 0,	1375	0, 0, 0, 0,
851	coro_state_clear,	1376	coro_state_free,
852	0,	1377	0,
853	#ifdef MGf_DUP	1378	#ifdef MGf_DUP
854	coro_state_dup,	1379	coro_state_dup,
855	#else	1380	#else
856	# define MGf_DUP 0	1381	# define MGf_DUP 0
857	#endif	1382	#endif
858	};	1383	};
859		1384
860	static struct coro *
861	SvSTATE (SV *coro)
862	{
863	HV *stash;
864	MAGIC *mg;
865
866	if (SvROK (coro))
867	coro = SvRV (coro);
868
869	stash = SvSTASH (coro);
870	if (stash != coro_stash && stash != coro_state_stash)
871	{
872	/* very slow, but rare, check */
873	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
874	croak ("Coro::State object required");
875	}
876
877	mg = SvMAGIC (coro);
878	assert (mg->mg_type == PERL_MAGIC_ext);
879	return (struct coro *)mg->mg_ptr;
880	}
881
882	static void	1385	static void
883	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1386	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
884	{	1387	{
885	ta->prev = SvSTATE (prev_sv);	1388	ta->prev = SvSTATE (prev_sv);
886	ta->next = SvSTATE (next_sv);	1389	ta->next = SvSTATE (next_sv);
		1390	TRANSFER_CHECK (*ta);
887	}	1391	}
888		1392
889	static void	1393	static void
890	api_transfer (SV prev_sv, SV next_sv)	1394	api_transfer (SV prev_sv, SV next_sv)
891	{	1395	{
		1396	dTHX;
892	struct transfer_args ta;	1397	struct transfer_args ta;
893		1398
894	prepare_transfer (&ta, prev_sv, next_sv);	1399	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
895	TRANSFER (ta);	1400	TRANSFER (ta, 1);
896	}
897
898	static int
899	api_save (SV *coro_sv, int new_save)
900	{
901	struct coro *coro = SvSTATE (coro_sv);
902	int old_save = coro->save;
903
904	if (new_save >= 0)
905	coro->save = new_save;
906
907	return old_save;
908	}	1401	}
909		1402
910	/ Coro ******************************************************************/	1403	/ Coro ******************************************************************/
911		1404
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static SV *coro_current;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1405	static void
925	coro_enq (SV *coro_sv)	1406	coro_enq (pTHX_ SV *coro_sv)
926	{	1407	{
927	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1408	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;
929	}	1409	}
930		1410
931	static SV *	1411	static SV *
932	coro_deq (int min_prio)	1412	coro_deq (pTHX)
933	{	1413	{
934	int prio = PRIO_MAX - PRIO_MIN;	1414	int prio;
935		1415
936	min_prio -= PRIO_MIN;
937	if (min_prio < 0)
938	min_prio = 0;
939
940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1416	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
941	if (AvFILLp (coro_ready [prio]) >= 0)	1417	if (AvFILLp (coro_ready [prio]) >= 0)
942	{
943	coro_nready--;
944	return av_shift (coro_ready [prio]);	1418	return av_shift (coro_ready [prio]);
945	}
946		1419
947	return 0;	1420	return 0;
948	}	1421	}
949		1422
950	static int	1423	static int
951	api_ready (SV *coro_sv)	1424	api_ready (SV *coro_sv)
952	{	1425	{
		1426	dTHX;
953	struct coro *coro;	1427	struct coro *coro;
		1428	SV *sv_hook;
		1429	void (*xs_hook)(void);
954		1430
955	if (SvROK (coro_sv))	1431	if (SvROK (coro_sv))
956	coro_sv = SvRV (coro_sv);	1432	coro_sv = SvRV (coro_sv);
957		1433
958	coro = SvSTATE (coro_sv);	1434	coro = SvSTATE (coro_sv);
959		1435
960	if (coro->flags & CF_READY)	1436	if (coro->flags & CF_READY)
961	return 0;	1437	return 0;
962		1438
963	#if 0 /* this is actually harmless */
964	if (coro->flags & CF_RUNNING)
965	croak ("Coro::ready called on currently running coroutine");
966	#endif
967
968	coro->flags \|= CF_READY;	1439	coro->flags \|= CF_READY;
969		1440
970	LOCK;	1441	LOCK;
		1442
		1443	sv_hook = coro_nready ? 0 : coro_readyhook;
		1444	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1445
971	coro_enq (SvREFCNT_inc (coro_sv));	1446	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1447	++coro_nready;
		1448
972	UNLOCK;	1449	UNLOCK;
		1450
		1451	if (sv_hook)
		1452	{
		1453	dSP;
		1454
		1455	ENTER;
		1456	SAVETMPS;
		1457
		1458	PUSHMARK (SP);
		1459	PUTBACK;
		1460	call_sv (sv_hook, G_DISCARD);
		1461	SPAGAIN;
		1462
		1463	FREETMPS;
		1464	LEAVE;
		1465	}
		1466
		1467	if (xs_hook)
		1468	xs_hook ();
973		1469
974	return 1;	1470	return 1;
975	}	1471	}
976		1472
977	static int	1473	static int
978	api_is_ready (SV *coro_sv)	1474	api_is_ready (SV *coro_sv)
979	{	1475	{
		1476	dTHX;
980	return !!SvSTATE (coro_sv)->flags & CF_READY;	1477	return !!(SvSTATE (coro_sv)->flags & CF_READY);
981	}	1478	}
982		1479
983	static void	1480	static void
984	prepare_schedule (struct transfer_args *ta)	1481	prepare_schedule (pTHX_ struct transfer_args *ta)
985	{	1482	{
986	SV prev, next;	1483	SV prev_sv, next_sv;
987		1484
988	for (;;)	1485	for (;;)
989	{	1486	{
990	LOCK;	1487	LOCK;
991	next = coro_deq (PRIO_MIN);	1488	next_sv = coro_deq (aTHX);
		1489
		1490	/* nothing to schedule: call the idle handler */
		1491	if (expect_false (!next_sv))
		1492	{
		1493	dSP;
		1494	UNLOCK;
		1495
		1496	ENTER;
		1497	SAVETMPS;
		1498
		1499	PUSHMARK (SP);
		1500	PUTBACK;
		1501	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1502	SPAGAIN;
		1503
		1504	FREETMPS;
		1505	LEAVE;
		1506	continue;
		1507	}
		1508
		1509	ta->next = SvSTATE (next_sv);
		1510
		1511	/* cannot transfer to destroyed coros, skip and look for next */
		1512	if (expect_false (ta->next->flags & CF_DESTROYED))
		1513	{
		1514	UNLOCK;
		1515	SvREFCNT_dec (next_sv);
		1516	/* coro_nready is already taken care of by destroy */
		1517	continue;
		1518	}
		1519
		1520	--coro_nready;
992	UNLOCK;	1521	UNLOCK;
993
994	if (next)
995	break;	1522	break;
996
997	{
998	dSP;
999
1000	ENTER;
1001	SAVETMPS;
1002
1003	PUSHMARK (SP);
1004	PUTBACK;
1005	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1006
1007	FREETMPS;
1008	LEAVE;
1009	}	1523	}
1010	}
1011
1012	prev = SvRV (coro_current);
1013	SvRV_set (coro_current, next);
1014		1524
1015	/* free this only after the transfer */	1525	/* free this only after the transfer */
1016	LOCK;	1526	prev_sv = SvRV (coro_current);
1017	free_coro_mortal ();
1018	UNLOCK;
1019	coro_mortal = prev;
1020
1021	assert (!SvROK(prev));//D
1022	assert (!SvROK(next));//D
1023
1024	ta->prev = SvSTATE (prev);	1527	ta->prev = SvSTATE (prev_sv);
1025	ta->next = SvSTATE (next);	1528	TRANSFER_CHECK (*ta);
1026
1027	assert (ta->next->flags & CF_READY);	1529	assert (ta->next->flags & CF_READY);
1028	ta->next->flags &= ~CF_READY;	1530	ta->next->flags &= ~CF_READY;
		1531	SvRV_set (coro_current, next_sv);
		1532
		1533	LOCK;
		1534	free_coro_mortal (aTHX);
		1535	coro_mortal = prev_sv;
		1536	UNLOCK;
1029	}	1537	}
1030		1538
1031	static void	1539	static void
1032	prepare_cede (struct transfer_args *ta)	1540	prepare_cede (pTHX_ struct transfer_args *ta)
1033	{	1541	{
1034	api_ready (coro_current);	1542	api_ready (coro_current);
1035
1036	prepare_schedule (ta);	1543	prepare_schedule (aTHX_ ta);
		1544	}
		1545
		1546	static int
		1547	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1548	{
		1549	if (coro_nready)
		1550	{
		1551	SV *prev = SvRV (coro_current);
		1552	prepare_schedule (aTHX_ ta);
		1553	api_ready (prev);
		1554	return 1;
		1555	}
		1556	else
		1557	return 0;
1037	}	1558	}
1038		1559
1039	static void	1560	static void
1040	api_schedule (void)	1561	api_schedule (void)
1041	{	1562	{
		1563	dTHX;
1042	struct transfer_args ta;	1564	struct transfer_args ta;
1043		1565
1044	prepare_schedule (&ta);	1566	prepare_schedule (aTHX_ &ta);
1045	TRANSFER (ta);	1567	TRANSFER (ta, 1);
		1568	}
		1569
		1570	static int
		1571	api_cede (void)
		1572	{
		1573	dTHX;
		1574	struct transfer_args ta;
		1575
		1576	prepare_cede (aTHX_ &ta);
		1577
		1578	if (expect_true (ta.prev != ta.next))
		1579	{
		1580	TRANSFER (ta, 1);
		1581	return 1;
		1582	}
		1583	else
		1584	return 0;
		1585	}
		1586
		1587	static int
		1588	api_cede_notself (void)
		1589	{
		1590	dTHX;
		1591	struct transfer_args ta;
		1592
		1593	if (prepare_cede_notself (aTHX_ &ta))
		1594	{
		1595	TRANSFER (ta, 1);
		1596	return 1;
		1597	}
		1598	else
		1599	return 0;
1046	}	1600	}
1047		1601
1048	static void	1602	static void
1049	api_cede (void)	1603	api_trace (SV *coro_sv, int flags)
1050	{	1604	{
1051	struct transfer_args ta;	1605	dTHX;
		1606	struct coro *coro = SvSTATE (coro_sv);
1052		1607
1053	prepare_cede (&ta);	1608	if (flags & CC_TRACE)
1054	TRANSFER (ta);	1609	{
1055	}	1610	if (!coro->cctx)
		1611	coro->cctx = cctx_new ();
		1612	else if (!(coro->cctx->flags & CC_TRACE))
		1613	croak ("cannot enable tracing on coroutine with custom stack");
1056		1614
		1615	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1616	}
		1617	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1618	{
		1619	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1620
		1621	if (coro->flags & CF_RUNNING)
		1622	PL_runops = RUNOPS_DEFAULT;
		1623	else
		1624	coro->slot->runops = RUNOPS_DEFAULT;
		1625	}
		1626	}
		1627
1057	MODULE = Coro::State PACKAGE = Coro::State	1628	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1058		1629
1059	PROTOTYPES: DISABLE	1630	PROTOTYPES: DISABLE
1060		1631
1061	BOOT:	1632	BOOT:
1062	{	1633	{
1063	#ifdef USE_ITHREADS	1634	#ifdef USE_ITHREADS
1064	MUTEX_INIT (&coro_mutex);	1635	MUTEX_INIT (&coro_mutex);
1065	#endif	1636	#endif
1066	BOOT_PAGESIZE;	1637	BOOT_PAGESIZE;
1067		1638
		1639	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1640	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1641
		1642	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1643	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1644	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1645
		1646	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1647	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1648	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1649
1068	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1650	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1069		1651
		1652	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1653	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1070	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1654	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1071	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1072	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1073	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1074	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1655	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1075		1656
1076	main_mainstack = PL_mainstack;	1657	main_mainstack = PL_mainstack;
		1658	main_top_env = PL_top_env;
1077		1659
		1660	while (main_top_env->je_prev)
		1661	main_top_env = main_top_env->je_prev;
		1662
1078	coroapi.ver = CORO_API_VERSION;	1663	coroapi.ver = CORO_API_VERSION;
		1664	coroapi.rev = CORO_API_REVISION;
1079	coroapi.transfer = api_transfer;	1665	coroapi.transfer = api_transfer;
1080		1666
1081	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1667	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1082	}	1668	}
1083		1669
1084	SV *	1670	SV *
1085	new (char *klass, ...)	1671	new (char *klass, ...)
1086	CODE:	1672	CODE:
1087	{	1673	{
1088	struct coro *coro;	1674	struct coro *coro;
		1675	MAGIC *mg;
1089	HV *hv;	1676	HV *hv;
1090	int i;	1677	int i;
1091		1678
1092	Newz (0, coro, 1, struct coro);	1679	Newz (0, coro, 1, struct coro);
1093	coro->args = newAV ();	1680	coro->args = newAV ();
1094	coro->save = CORO_SAVE_ALL;
1095	coro->flags = CF_NEW;	1681	coro->flags = CF_NEW;
1096		1682
		1683	if (coro_first) coro_first->prev = coro;
		1684	coro->next = coro_first;
		1685	coro_first = coro;
		1686
1097	hv = newHV ();	1687	coro->hv = hv = newHV ();
1098	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1688	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1689	mg->mg_flags \|= MGf_DUP;
1099	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1690	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1100		1691
		1692	av_extend (coro->args, items - 1);
1101	for (i = 1; i < items; i++)	1693	for (i = 1; i < items; i++)
1102	av_push (coro->args, newSVsv (ST (i)));	1694	av_push (coro->args, newSVsv (ST (i)));
1103	}	1695	}
1104	OUTPUT:	1696	OUTPUT:
1105	RETVAL	1697	RETVAL
1106		1698
1107	int	1699	# these not obviously related functions are all rolled into the same xs
1108	save (SV *coro, int new_save = -1)	1700	# function to increase chances that they all will call transfer with the same
1109	CODE:	1701	# stack offset
1110	RETVAL = api_save (coro, new_save);
1111	OUTPUT:
1112	RETVAL
1113
1114	void	1702	void
1115	_set_stacklevel (...)	1703	_set_stacklevel (...)
1116	ALIAS:	1704	ALIAS:
1117	Coro::State::transfer = 1	1705	Coro::State::transfer = 1
1118	Coro::schedule = 2	1706	Coro::schedule = 2
1119	Coro::cede = 3	1707	Coro::cede = 3
		1708	Coro::cede_notself = 4
1120	CODE:	1709	CODE:
1121	{	1710	{
1122	struct transfer_args ta;	1711	struct transfer_args ta;
1123		1712
		1713	PUTBACK;
1124	switch (ix)	1714	switch (ix)
1125	{	1715	{
1126	case 0:	1716	case 0:
1127	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1717	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1128	ta.next = 0;	1718	ta.next = 0;
…		…
1130		1720
1131	case 1:	1721	case 1:
1132	if (items != 2)	1722	if (items != 2)
1133	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1723	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1134		1724
1135	prepare_transfer (&ta, ST (0), ST (1));	1725	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1136	break;	1726	break;
1137		1727
1138	case 2:	1728	case 2:
1139	prepare_schedule (&ta);	1729	prepare_schedule (aTHX_ &ta);
1140	break;	1730	break;
1141		1731
1142	case 3:	1732	case 3:
1143	prepare_cede (&ta);	1733	prepare_cede (aTHX_ &ta);
		1734	break;
		1735
		1736	case 4:
		1737	if (!prepare_cede_notself (aTHX_ &ta))
		1738	XSRETURN_EMPTY;
		1739
1144	break;	1740	break;
1145	}	1741	}
		1742	SPAGAIN;
1146		1743
		1744	BARRIER;
		1745	PUTBACK;
1147	TRANSFER (ta);	1746	TRANSFER (ta, 0);
		1747	SPAGAIN; /* might be the sp of a different coroutine now */
		1748	/* be extra careful not to ever do anything after TRANSFER */
1148	}	1749	}
		1750
		1751	bool
		1752	_destroy (SV *coro_sv)
		1753	CODE:
		1754	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
		1755	OUTPUT:
		1756	RETVAL
1149		1757
1150	void	1758	void
1151	_clone_state_from (SV dst, SV src)
1152	CODE:
1153	{
1154	struct coro *coro_src = SvSTATE (src);
1155
1156	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1157
1158	++coro_src->refcnt;
1159	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1160	}
1161
1162	void
1163	_exit (code)	1759	_exit (int code)
1164	int code
1165	PROTOTYPE: $	1760	PROTOTYPE: $
1166	CODE:	1761	CODE:
1167	_exit (code);	1762	_exit (code);
		1763
		1764	int
		1765	cctx_stacksize (int new_stacksize = 0)
		1766	CODE:
		1767	RETVAL = coro_stacksize;
		1768	if (new_stacksize)
		1769	coro_stacksize = new_stacksize;
		1770	OUTPUT:
		1771	RETVAL
1168		1772
1169	int	1773	int
1170	cctx_count ()	1774	cctx_count ()
1171	CODE:	1775	CODE:
1172	RETVAL = cctx_count;	1776	RETVAL = cctx_count;
…		…
1178	CODE:	1782	CODE:
1179	RETVAL = cctx_idle;	1783	RETVAL = cctx_idle;
1180	OUTPUT:	1784	OUTPUT:
1181	RETVAL	1785	RETVAL
1182		1786
		1787	void
		1788	list ()
		1789	PPCODE:
		1790	{
		1791	struct coro *coro;
		1792	for (coro = coro_first; coro; coro = coro->next)
		1793	if (coro->hv)
		1794	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1795	}
		1796
		1797	void
		1798	call (Coro::State coro, SV *coderef)
		1799	ALIAS:
		1800	eval = 1
		1801	CODE:
		1802	{
		1803	if (coro->mainstack)
		1804	{
		1805	struct coro temp;
		1806
		1807	if (!(coro->flags & CF_RUNNING))
		1808	{
		1809	PUTBACK;
		1810	save_perl (aTHX_ &temp);
		1811	load_perl (aTHX_ coro);
		1812	}
		1813
		1814	{
		1815	dSP;
		1816	ENTER;
		1817	SAVETMPS;
		1818	PUTBACK;
		1819	PUSHSTACK;
		1820	PUSHMARK (SP);
		1821
		1822	if (ix)
		1823	eval_sv (coderef, 0);
		1824	else
		1825	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1826
		1827	POPSTACK;
		1828	SPAGAIN;
		1829	FREETMPS;
		1830	LEAVE;
		1831	PUTBACK;
		1832	}
		1833
		1834	if (!(coro->flags & CF_RUNNING))
		1835	{
		1836	save_perl (aTHX_ coro);
		1837	load_perl (aTHX_ &temp);
		1838	SPAGAIN;
		1839	}
		1840	}
		1841	}
		1842
		1843	SV *
		1844	is_ready (Coro::State coro)
		1845	PROTOTYPE: $
		1846	ALIAS:
		1847	is_ready = CF_READY
		1848	is_running = CF_RUNNING
		1849	is_new = CF_NEW
		1850	is_destroyed = CF_DESTROYED
		1851	CODE:
		1852	RETVAL = boolSV (coro->flags & ix);
		1853	OUTPUT:
		1854	RETVAL
		1855
		1856	void
		1857	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1858
		1859	SV *
		1860	has_cctx (Coro::State coro)
		1861	PROTOTYPE: $
		1862	CODE:
		1863	RETVAL = boolSV (!!coro->cctx);
		1864	OUTPUT:
		1865	RETVAL
		1866
		1867	int
		1868	is_traced (Coro::State coro)
		1869	PROTOTYPE: $
		1870	CODE:
		1871	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1872	OUTPUT:
		1873	RETVAL
		1874
		1875	IV
		1876	rss (Coro::State coro)
		1877	PROTOTYPE: $
		1878	ALIAS:
		1879	usecount = 1
		1880	CODE:
		1881	switch (ix)
		1882	{
		1883	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1884	case 1: RETVAL = coro->usecount; break;
		1885	}
		1886	OUTPUT:
		1887	RETVAL
		1888
		1889	void
		1890	force_cctx ()
		1891	CODE:
		1892	struct coro *coro = SvSTATE (coro_current);
		1893	coro->cctx->idle_sp = 0;
		1894
		1895	void
		1896	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1897	PROTOTYPE: $;$
		1898	CODE:
		1899	SvREFCNT_dec (self->throw);
		1900	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1901
		1902	void
		1903	swap_defsv (Coro::State self)
		1904	PROTOTYPE: $
		1905	ALIAS:
		1906	swap_defav = 1
		1907	CODE:
		1908	if (!self->slot)
		1909	croak ("cannot swap state with coroutine that has no saved state");
		1910	else
		1911	{
		1912	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1913	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1914
		1915	SV tmp = src; src = dst; *dst = tmp;
		1916	}
		1917
1183	MODULE = Coro::State PACKAGE = Coro	1918	MODULE = Coro::State PACKAGE = Coro
1184		1919
1185	BOOT:	1920	BOOT:
1186	{	1921	{
1187	int i;	1922	int i;
1188		1923
		1924	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1925	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1926	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1927
		1928	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1929	SvREADONLY_on (coro_current);
		1930
1189	coro_stash = gv_stashpv ("Coro", TRUE);	1931	coro_stash = gv_stashpv ("Coro", TRUE);
1190		1932
1191	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1933	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1192	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1934	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1193	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1935	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1194	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1936	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1195	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1937	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1196	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1938	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1197		1939
1198	coro_current = get_sv ("Coro::current", FALSE);
1199	SvREADONLY_on (coro_current);
1200
1201	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1940	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1202	coro_ready[i] = newAV ();	1941	coro_ready[i] = newAV ();
1203		1942
1204	{	1943	{
1205	SV *sv = perl_get_sv("Coro::API", 1);	1944	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1945	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1206		1946
1207	coroapi.schedule = api_schedule;	1947	coroapi.schedule = api_schedule;
1208	coroapi.save = api_save;
1209	coroapi.cede = api_cede;	1948	coroapi.cede = api_cede;
		1949	coroapi.cede_notself = api_cede_notself;
1210	coroapi.ready = api_ready;	1950	coroapi.ready = api_ready;
1211	coroapi.is_ready = api_is_ready;	1951	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1952	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1953	coroapi.current = coro_current;
1214		1954
1215	GCoroAPI = &coroapi;	1955	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1956	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1957	SvREADONLY_on (sv);
1218	}	1958	}
…		…
1223	PROTOTYPE: $	1963	PROTOTYPE: $
1224	CODE:	1964	CODE:
1225	SvREFCNT_dec (SvRV (coro_current));	1965	SvREFCNT_dec (SvRV (coro_current));
1226	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1966	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1227		1967
		1968	void
		1969	_set_readyhook (SV *hook)
		1970	PROTOTYPE: $
		1971	CODE:
		1972	LOCK;
		1973	SvREFCNT_dec (coro_readyhook);
		1974	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1975	UNLOCK;
		1976
1228	int	1977	int
1229	prio (Coro::State coro, int newprio = 0)	1978	prio (Coro::State coro, int newprio = 0)
1230	ALIAS:	1979	ALIAS:
1231	nice = 1	1980	nice = 1
1232	CODE:	1981	CODE:
…		…
1234	RETVAL = coro->prio;	1983	RETVAL = coro->prio;
1235		1984
1236	if (items > 1)	1985	if (items > 1)
1237	{	1986	{
1238	if (ix)	1987	if (ix)
1239	newprio += coro->prio;	1988	newprio = coro->prio - newprio;
1240		1989
1241	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1990	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1242	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1991	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1243		1992
1244	coro->prio = newprio;	1993	coro->prio = newprio;
1245	}	1994	}
1246	}	1995	}
		1996	OUTPUT:
		1997	RETVAL
1247		1998
1248	SV *	1999	SV *
1249	ready (SV *self)	2000	ready (SV *self)
1250	PROTOTYPE: $	2001	PROTOTYPE: $
1251	CODE:	2002	CODE:
1252	RETVAL = boolSV (api_ready (self));	2003	RETVAL = boolSV (api_ready (self));
1253	OUTPUT:	2004	OUTPUT:
1254	RETVAL	2005	RETVAL
1255		2006
1256	SV *
1257	is_ready (SV *self)
1258	PROTOTYPE: $
1259	CODE:
1260	RETVAL = boolSV (api_is_ready (self));
1261	OUTPUT:
1262	RETVAL
1263
1264	int	2007	int
1265	nready (...)	2008	nready (...)
1266	PROTOTYPE:	2009	PROTOTYPE:
1267	CODE:	2010	CODE:
1268	RETVAL = coro_nready;	2011	RETVAL = coro_nready;
1269	OUTPUT:	2012	OUTPUT:
1270	RETVAL	2013	RETVAL
1271		2014
		2015	# for async_pool speedup
		2016	void
		2017	_pool_1 (SV *cb)
		2018	CODE:
		2019	{
		2020	struct coro *coro = SvSTATE (coro_current);
		2021	HV hv = (HV )SvRV (coro_current);
		2022	AV *defav = GvAV (PL_defgv);
		2023	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		2024	AV *invoke_av;
		2025	int i, len;
		2026
		2027	if (!invoke)
		2028	{
		2029	SV *old = PL_diehook;
		2030	PL_diehook = 0;
		2031	SvREFCNT_dec (old);
		2032	croak ("\3async_pool terminate\2\n");
		2033	}
		2034
		2035	SvREFCNT_dec (coro->saved_deffh);
		2036	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		2037
		2038	hv_store (hv, "desc", sizeof ("desc") - 1,
		2039	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		2040
		2041	invoke_av = (AV *)SvRV (invoke);
		2042	len = av_len (invoke_av);
		2043
		2044	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2045
		2046	if (len > 0)
		2047	{
		2048	av_fill (defav, len - 1);
		2049	for (i = 0; i < len; ++i)
		2050	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		2051	}
		2052
		2053	SvREFCNT_dec (invoke);
		2054	}
		2055
		2056	void
		2057	_pool_2 (SV *cb)
		2058	CODE:
		2059	{
		2060	struct coro *coro = SvSTATE (coro_current);
		2061
		2062	sv_setsv (cb, &PL_sv_undef);
		2063
		2064	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		2065	coro->saved_deffh = 0;
		2066
		2067	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2068	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2069	{
		2070	SV *old = PL_diehook;
		2071	PL_diehook = 0;
		2072	SvREFCNT_dec (old);
		2073	croak ("\3async_pool terminate\2\n");
		2074	}
		2075
		2076	av_clear (GvAV (PL_defgv));
		2077	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2078	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2079
		2080	coro->prio = 0;
		2081
		2082	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2083	api_trace (coro_current, 0);
		2084
		2085	av_push (av_async_pool, newSVsv (coro_current));
		2086	}
		2087
		2088
1272	MODULE = Coro::State PACKAGE = Coro::AIO	2089	MODULE = Coro::State PACKAGE = Coro::AIO
1273		2090
1274	SV *	2091	SV *
1275	_get_state ()	2092	_get_state ()
1276	CODE:	2093	CODE:
…		…
1301	PL_laststype = data->laststype;	2118	PL_laststype = data->laststype;
1302	PL_laststatval = data->laststatval;	2119	PL_laststatval = data->laststatval;
1303	PL_statcache = data->statcache;	2120	PL_statcache = data->statcache;
1304	}	2121	}
1305		2122
		2123
		2124	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2125
		2126	BOOT:
		2127	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2128
		2129	SV *
		2130	_schedule (...)
		2131	PROTOTYPE: @
		2132	CODE:
		2133	{
		2134	static int incede;
		2135
		2136	api_cede_notself ();
		2137
		2138	++incede;
		2139	while (coro_nready >= incede && api_cede ())
		2140	;
		2141
		2142	sv_setsv (sv_activity, &PL_sv_undef);
		2143	if (coro_nready >= incede)
		2144	{
		2145	PUSHMARK (SP);
		2146	PUTBACK;
		2147	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
		2148	SPAGAIN;
		2149	}
		2150
		2151	--incede;
		2152	}
		2153

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Comparing Coro/Coro/State.xs (file contents): Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs. Revision 1.242 by root, Thu Aug 14 12:48:20 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.242 by root, Thu Aug 14 12:48:20 2008 UTC