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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs.
Revision 1.219 by root, Tue Dec 4 19:33:45 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
2		5
3	#include "EXTERN.h"	6	#include "EXTERN.h"
4	#include "perl.h"	7	#include "perl.h"
5	#include "XSUB.h"	8	#include "XSUB.h"
6		9
7	#include "patchlevel.h"	10	#include "patchlevel.h"
8		11
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	12	#include <stdio.h>
41	#include <errno.h>	13	#include <errno.h>
42		14	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	15	#include <inttypes.h> /* portable stdint.h */
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		16
51	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
52	# include <unistd.h>	18	# include <unistd.h>
53	# include <sys/mman.h>	19	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
69	#else	35	#else
70	# define PAGESIZE 0	36	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	37	# define BOOT_PAGESIZE (void)0
72	#endif	38	#endif
73		39
74	/* The next macro should declare a variable stacklevel that contains and approximation	40	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	41	# include <valgrind/valgrind.h>
76	* and should be unique. */	42	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		43	#else
		44	# define REGISTER_STACK(cctx,start,end)
		45	#endif
		46
		47	/* the maximum number of idle cctx that will be pooled */
		48	#define MAX_IDLE_CCTX 8
		49
		50	#define PERL_VERSION_ATLEAST(a,b,c) \
		51	(PERL_REVISION > (a) \
		52	\|\| (PERL_REVISION == (a) \
		53	&& (PERL_VERSION > (b) \
		54	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		55
		56	#if !PERL_VERSION_ATLEAST (5,6,0)
		57	# ifndef PL_ppaddr
		58	# define PL_ppaddr ppaddr
		59	# endif
		60	# ifndef call_sv
		61	# define call_sv perl_call_sv
		62	# endif
		63	# ifndef get_sv
		64	# define get_sv perl_get_sv
		65	# endif
		66	# ifndef get_cv
		67	# define get_cv perl_get_cv
		68	# endif
		69	# ifndef IS_PADGV
		70	# define IS_PADGV(v) 0
		71	# endif
		72	# ifndef IS_PADCONST
		73	# define IS_PADCONST(v) 0
		74	# endif
		75	#endif
		76
		77	/* 5.8.7 */
		78	#ifndef SvRV_set
		79	# define SvRV_set(s,v) SvRV(s) = (v)
		80	#endif
		81
		82	/* 5.8.8 */
		83	#ifndef GV_NOTQUAL
		84	# define GV_NOTQUAL 0
		85	#endif
		86	#ifndef newSV
		87	# define newSV(l) NEWSV(0,l)
		88	#endif
		89
		90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		91	# undef CORO_STACKGUARD
		92	#endif
		93
		94	#ifndef CORO_STACKGUARD
		95	# define CORO_STACKGUARD 0
		96	#endif
		97
		98	/* prefer perl internal functions over our own? */
		99	#ifndef CORO_PREFER_PERL_FUNCTIONS
		100	# define CORO_PREFER_PERL_FUNCTIONS 0
		101	#endif
		102
		103	/* The next macros try to return the current stack pointer, in an as
		104	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	105	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	106	#define STACKLEVEL ((void *)&stacklevel)
79		107
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		109
82	#if __GNUC__ >= 3	110	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	111	# define attribute(x) __attribute__(x)
		112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		113	# define expect(expr,value) __builtin_expect ((expr),(value))
84	#else	114	#else
85	# define attribute(x)	115	# define attribute(x)
		116	# define BARRIER
		117	# define expect(expr,value) (expr)
86	#endif	118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
87		122
88	#define NOINLINE attribute ((noinline))	123	#define NOINLINE attribute ((noinline))
89		124
90	#include "CoroAPI.h"	125	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		126
94	#ifdef USE_ITHREADS	127	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	128	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	129	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	130	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	131	#else
99	# define LOCK (void)0	132	# define LOCK (void)0
100	# define UNLOCK (void)0	133	# define UNLOCK (void)0
101	#endif	134	#endif
102		135
		136	/* helper storage struct for Coro::AIO */
		137	struct io_state
		138	{
		139	int errorno;
		140	I32 laststype;
		141	int laststatval;
		142	Stat_t statcache;
		143	};
		144
		145	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	146	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	147	static AV main_mainstack; / used to differentiate between $main and others */
		148	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	149	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	150	static volatile SV coro_mortal; / will be freed after next transfer */
		151
		152	static GV irsgv; / $/ */
		153	static GV stdoutgv; / STDOUT /
		154	static SV *rv_diehook;
		155	static SV *rv_warnhook;
		156	static HV hv_sig; / %SIG */
		157
		158	/* async_pool helper stuff */
		159	static SV *sv_pool_rss;
		160	static SV *sv_pool_size;
		161	static AV *av_async_pool;
107		162
108	static struct coro_cctx *cctx_first;	163	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	164	static int cctx_count, cctx_idle;
		165
		166	enum {
		167	CC_MAPPED = 0x01,
		168	CC_NOREUSE = 0x02, /* throw this away after tracing */
		169	CC_TRACE = 0x04,
		170	CC_TRACE_SUB = 0x08, /* trace sub calls */
		171	CC_TRACE_LINE = 0x10, /* trace each statement */
		172	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		173	};
110		174
111	/* this is a structure representing a c-level coroutine */	175	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	176	typedef struct coro_cctx {
113	struct coro_cctx *next;	177	struct coro_cctx *next;
114		178
115	/* the stack */	179	/* the stack */
116	void *sptr;	180	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	181	size_t ssize;
118		182
119	/* cpu state */	183	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	184	void idle_sp; / sp of top-level transfer/schedule/cede call */
		185	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	186	JMPENV *top_env;
122	coro_context cctx;	187	coro_context cctx;
123		188
124	#if USE_VALGRIND	189	#if CORO_USE_VALGRIND
125	int valgrind_id;	190	int valgrind_id;
126	#endif	191	#endif
		192	unsigned char flags;
127	} coro_cctx;	193	} coro_cctx;
		194
		195	enum {
		196	CF_RUNNING = 0x0001, /* coroutine is running */
		197	CF_READY = 0x0002, /* coroutine is ready */
		198	CF_NEW = 0x0004, /* has never been switched to */
		199	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		200	};
		201
		202	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		203	typedef struct {
		204	SV *defsv;
		205	AV *defav;
		206	SV *errsv;
		207	SV *irsgv;
		208	#define VAR(name,type) type name;
		209	# include "state.h"
		210	#undef VAR
		211	} perl_slots;
		212
		213	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
128		214
129	/* this is a structure representing a perl-level coroutine */	215	/* this is a structure representing a perl-level coroutine */
130	struct coro {	216	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	217	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	218	coro_cctx *cctx;
133		219
		220	/* process data */
		221	AV *mainstack;
		222	perl_slots slot; / basically the saved sp */
		223
134	/* data associated with this coroutine (initial args) */	224	AV args; / data associated with this coroutine (initial args) */
135	AV *args;	225	int refcnt; /* coroutines are refcounted, yes */
136	int refcnt;	226	int flags; /* CF_ flags */
		227	HV hv; / the perl hash associated with this coro, if any */
137		228
138	/* optionally saved, might be zero */	229	/* statistics */
139	AV *defav;	230	int usecount; /* number of transfers to this coro */
140	SV *defsv;
141	SV *errsv;
142
143	#define VAR(name,type) type name;
144	# include "state.h"
145	#undef VAR
146		231
147	/* coro process data */	232	/* coro process data */
148	int prio;	233	int prio;
		234	SV throw; / exception to be thrown */
		235
		236	/* async_pool */
		237	SV *saved_deffh;
		238
		239	/* linked list */
		240	struct coro next, prev;
149	};	241	};
150		242
151	typedef struct coro *Coro__State;	243	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	244	typedef struct coro *Coro__State_or_hashref;
153		245
		246	/ Coro ******************************************************************/
		247
		248	#define PRIO_MAX 3
		249	#define PRIO_HIGH 1
		250	#define PRIO_NORMAL 0
		251	#define PRIO_LOW -1
		252	#define PRIO_IDLE -3
		253	#define PRIO_MIN -4
		254
		255	/* for Coro.pm */
		256	static SV *coro_current;
		257	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		258	static int coro_nready;
		259	static struct coro *coro_first;
		260
		261	/ lowlevel stuff ********************************************************/
		262
		263	static SV *
		264	coro_get_sv (pTHX_ const char *name, int create)
		265	{
		266	#if PERL_VERSION_ATLEAST (5,9,0)
		267	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		268	get_sv (name, create);
		269	#endif
		270	return get_sv (name, create);
		271	}
		272
154	static AV *	273	static AV *
		274	coro_get_av (pTHX_ const char *name, int create)
		275	{
		276	#if PERL_VERSION_ATLEAST (5,9,0)
		277	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		278	get_av (name, create);
		279	#endif
		280	return get_av (name, create);
		281	}
		282
		283	static HV *
		284	coro_get_hv (pTHX_ const char *name, int create)
		285	{
		286	#if PERL_VERSION_ATLEAST (5,9,0)
		287	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		288	get_hv (name, create);
		289	#endif
		290	return get_hv (name, create);
		291	}
		292
		293	static AV *
155	coro_clone_padlist (CV *cv)	294	coro_clone_padlist (pTHX_ CV *cv)
156	{	295	{
157	AV *padlist = CvPADLIST (cv);	296	AV *padlist = CvPADLIST (cv);
158	AV newpadlist, newpad;	297	AV newpadlist, newpad;
159		298
160	newpadlist = newAV ();	299	newpadlist = newAV ();
…		…
172		311
173	return newpadlist;	312	return newpadlist;
174	}	313	}
175		314
176	static void	315	static void
177	free_padlist (AV *padlist)	316	free_padlist (pTHX_ AV *padlist)
178	{	317	{
179	/* may be during global destruction */	318	/* may be during global destruction */
180	if (SvREFCNT (padlist))	319	if (SvREFCNT (padlist))
181	{	320	{
182	I32 i = AvFILLp (padlist);	321	I32 i = AvFILLp (padlist);
…		…
203	AV *padlist;	342	AV *padlist;
204	AV av = (AV )mg->mg_obj;	343	AV av = (AV )mg->mg_obj;
205		344
206	/* casting is fun. */	345	/* casting is fun. */
207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	346	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
208	free_padlist (padlist);	347	free_padlist (aTHX_ padlist);
209
210	SvREFCNT_dec (av);
211		348
212	return 0;	349	return 0;
213	}	350	}
214		351
215	#define PERL_MAGIC_coro PERL_MAGIC_ext	352	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		353	#define CORO_MAGIC_type_state PERL_MAGIC_ext
216		354
217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	355	static MGVTBL coro_cv_vtbl = {
		356	0, 0, 0, 0,
		357	coro_cv_free
		358	};
		359
		360	#define CORO_MAGIC(sv,type) \
		361	SvMAGIC (sv) \
		362	? SvMAGIC (sv)->mg_type == type \
		363	? SvMAGIC (sv) \
		364	: mg_find (sv, type) \
		365	: 0
		366
		367	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		368	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		369
		370	static struct coro *
		371	SvSTATE_ (pTHX_ SV *coro)
		372	{
		373	HV *stash;
		374	MAGIC *mg;
		375
		376	if (SvROK (coro))
		377	coro = SvRV (coro);
		378
		379	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		380	croak ("Coro::State object required");
		381
		382	stash = SvSTASH (coro);
		383	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		384	{
		385	/* very slow, but rare, check */
		386	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		387	croak ("Coro::State object required");
		388	}
		389
		390	mg = CORO_MAGIC_state (coro);
		391	return (struct coro *)mg->mg_ptr;
		392	}
		393
		394	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
218		395
219	/* the next two functions merely cache the padlists */	396	/* the next two functions merely cache the padlists */
220	static void	397	static void
221	get_padlist (CV *cv)	398	get_padlist (pTHX_ CV *cv)
222	{	399	{
223	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	400	MAGIC *mg = CORO_MAGIC_cv (cv);
		401	AV *av;
224		402
225	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	403	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
226	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	404	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
227	else	405	else
228	{	406	{
229	#if 0	407	#if CORO_PREFER_PERL_FUNCTIONS
230	/* this is probably cleaner, but also slower? */	408	/* this is probably cleaner, but also slower? */
231	CV *cp = Perl_cv_clone (cv);	409	CV *cp = Perl_cv_clone (cv);
232	CvPADLIST (cv) = CvPADLIST (cp);	410	CvPADLIST (cv) = CvPADLIST (cp);
233	CvPADLIST (cp) = 0;	411	CvPADLIST (cp) = 0;
234	SvREFCNT_dec (cp);	412	SvREFCNT_dec (cp);
235	#else	413	#else
236	CvPADLIST (cv) = coro_clone_padlist (cv);	414	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
237	#endif	415	#endif
238	}	416	}
239	}	417	}
240		418
241	static void	419	static void
242	put_padlist (CV *cv)	420	put_padlist (pTHX_ CV *cv)
243	{	421	{
244	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	422	MAGIC *mg = CORO_MAGIC_cv (cv);
		423	AV *av;
245		424
246	if (!mg)	425	if (expect_false (!mg))
247	{	426	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
248	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
249	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
250	mg->mg_virtual = &vtbl_coro;
251	mg->mg_obj = (SV *)newAV ();
252	}
253		427
254	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	428	av = (AV *)mg->mg_obj;
255	}
256		429
257	#define SB do {	430	if (expect_false (AvFILLp (av) >= AvMAX (av)))
258	#define SE } while (0)	431	av_extend (av, AvMAX (av) + 1);
259		432
260	#define LOAD(state) load_state((state));	433	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
261	#define SAVE(state,flags) save_state((state),(flags));	434	}
262		435
263	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	436	/ load & save, init *****************************************************/
264		437
265	static void	438	static void
266	load_state(Coro__State c)	439	load_perl (pTHX_ Coro__State c)
267	{	440	{
		441	perl_slots *slot = c->slot;
		442	c->slot = 0;
		443
		444	PL_mainstack = c->mainstack;
		445
		446	GvSV (PL_defgv) = slot->defsv;
		447	GvAV (PL_defgv) = slot->defav;
		448	GvSV (PL_errgv) = slot->errsv;
		449	GvSV (irsgv) = slot->irsgv;
		450
268	#define VAR(name,type) PL_ ## name = c->name;	451	#define VAR(name,type) PL_ ## name = slot->name;
269	# include "state.h"	452	# include "state.h"
270	#undef VAR	453	#undef VAR
271
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
275		454
276	{	455	{
277	dSP;	456	dSP;
		457
278	CV *cv;	458	CV *cv;
279		459
280	/* now do the ugly restore mess */	460	/* now do the ugly restore mess */
281	while ((cv = (CV *)POPs))	461	while (expect_true (cv = (CV *)POPs))
282	{	462	{
283	AV padlist = (AV )POPs;
284
285	if (padlist)
286	{
287	put_padlist (cv); /* mark this padlist as available */	463	put_padlist (aTHX_ cv); /* mark this padlist as available */
288	CvPADLIST(cv) = padlist;	464	CvDEPTH (cv) = PTR2IV (POPs);
289	}	465	CvPADLIST (cv) = (AV *)POPs;
290
291	++CvDEPTH(cv);
292	}	466	}
293		467
294	PUTBACK;	468	PUTBACK;
295	}	469	}
296	}	470	}
297		471
298	static void	472	static void
299	save_state(Coro__State c, int flags)	473	save_perl (pTHX_ Coro__State c)
300	{	474	{
301	{	475	{
302	dSP;	476	dSP;
303	I32 cxix = cxstack_ix;	477	I32 cxix = cxstack_ix;
304	PERL_CONTEXT *ccstk = cxstack;	478	PERL_CONTEXT *ccstk = cxstack;
…		…
307	/*	481	/*
308	* the worst thing you can imagine happens first - we have to save	482	* the worst thing you can imagine happens first - we have to save
309	* (and reinitialize) all cv's in the whole callchain :(	483	* (and reinitialize) all cv's in the whole callchain :(
310	*/	484	*/
311		485
312	PUSHs (Nullsv);	486	XPUSHs (Nullsv);
313	/* this loop was inspired by pp_caller */	487	/* this loop was inspired by pp_caller */
314	for (;;)	488	for (;;)
315	{	489	{
316	while (cxix >= 0)	490	while (expect_true (cxix >= 0))
317	{	491	{
318	PERL_CONTEXT *cx = &ccstk[cxix--];	492	PERL_CONTEXT *cx = &ccstk[cxix--];
319		493
320	if (CxTYPE(cx) == CXt_SUB)	494	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
321	{	495	{
322	CV *cv = cx->blk_sub.cv;	496	CV *cv = cx->blk_sub.cv;
		497
323	if (CvDEPTH(cv))	498	if (expect_true (CvDEPTH (cv)))
324	{	499	{
325	EXTEND (SP, CvDEPTH(cv)*2);	500	EXTEND (SP, 3);
326
327	while (--CvDEPTH(cv))
328	{
329	/* this tells the restore code to increment CvDEPTH */
330	PUSHs (Nullsv);
331	PUSHs ((SV *)cv);
332	}
333
334	PUSHs ((SV *)CvPADLIST(cv));	501	PUSHs ((SV *)CvPADLIST (cv));
		502	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
335	PUSHs ((SV *)cv);	503	PUSHs ((SV *)cv);
336		504
		505	CvDEPTH (cv) = 0;
337	get_padlist (cv);	506	get_padlist (aTHX_ cv);
338	}	507	}
339	}	508	}
340	#ifdef CXt_FORMAT
341	else if (CxTYPE(cx) == CXt_FORMAT)
342	{
343	/* I never used formats, so how should I know how these are implemented? */
344	/* my bold guess is as a simple, plain sub... */
345	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
346	}
347	#endif
348	}	509	}
349		510
350	if (top_si->si_type == PERLSI_MAIN)	511	if (expect_true (top_si->si_type == PERLSI_MAIN))
351	break;	512	break;
352		513
353	top_si = top_si->si_prev;	514	top_si = top_si->si_prev;
354	ccstk = top_si->si_cxstack;	515	ccstk = top_si->si_cxstack;
355	cxix = top_si->si_cxix;	516	cxix = top_si->si_cxix;
356	}	517	}
357		518
358	PUTBACK;	519	PUTBACK;
359	}	520	}
360		521
361	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	522	/* allocate some space on the context stack for our purposes */
362	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	523	/* we manually unroll here, as usually 2 slots is enough */
363	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	524	if (SLOT_COUNT >= 1) CXINC;
		525	if (SLOT_COUNT >= 2) CXINC;
		526	if (SLOT_COUNT >= 3) CXINC;
		527	{
		528	int i;
		529	for (i = 3; i < SLOT_COUNT; ++i)
		530	CXINC;
		531	}
		532	cxstack_ix -= SLOT_COUNT; /* undo allocation */
364		533
		534	c->mainstack = PL_mainstack;
		535
		536	{
		537	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		538
		539	slot->defav = GvAV (PL_defgv);
		540	slot->defsv = DEFSV;
		541	slot->errsv = ERRSV;
		542	slot->irsgv = GvSV (irsgv);
		543
365	#define VAR(name,type)c->name = PL_ ## name;	544	#define VAR(name,type) slot->name = PL_ ## name;
366	# include "state.h"	545	# include "state.h"
367	#undef VAR	546	#undef VAR
		547	}
368	}	548	}
369		549
370	/*	550	/*
371	* allocate various perl stacks. This is an exact copy	551	* allocate various perl stacks. This is an exact copy
372	* of perl.c:init_stacks, except that it uses less memory	552	* of perl.c:init_stacks, except that it uses less memory
373	* on the (sometimes correct) assumption that coroutines do	553	* on the (sometimes correct) assumption that coroutines do
374	* not usually need a lot of stackspace.	554	* not usually need a lot of stackspace.
375	*/	555	*/
		556	#if CORO_PREFER_PERL_FUNCTIONS
		557	# define coro_init_stacks init_stacks
		558	#else
376	static void	559	static void
377	coro_init_stacks ()	560	coro_init_stacks (pTHX)
378	{	561	{
379	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	562	PL_curstackinfo = new_stackinfo(32, 8);
380	PL_curstackinfo->si_type = PERLSI_MAIN;	563	PL_curstackinfo->si_type = PERLSI_MAIN;
381	PL_curstack = PL_curstackinfo->si_stack;	564	PL_curstack = PL_curstackinfo->si_stack;
382	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	565	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
383		566
384	PL_stack_base = AvARRAY(PL_curstack);	567	PL_stack_base = AvARRAY(PL_curstack);
385	PL_stack_sp = PL_stack_base;	568	PL_stack_sp = PL_stack_base;
386	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	569	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
387		570
388	New(50,PL_tmps_stack,96,SV*);	571	New(50,PL_tmps_stack,32,SV*);
389	PL_tmps_floor = -1;	572	PL_tmps_floor = -1;
390	PL_tmps_ix = -1;	573	PL_tmps_ix = -1;
391	PL_tmps_max = 96;	574	PL_tmps_max = 32;
392		575
393	New(54,PL_markstack,16,I32);	576	New(54,PL_markstack,16,I32);
394	PL_markstack_ptr = PL_markstack;	577	PL_markstack_ptr = PL_markstack;
395	PL_markstack_max = PL_markstack + 16;	578	PL_markstack_max = PL_markstack + 16;
396		579
397	#ifdef SET_MARK_OFFSET	580	#ifdef SET_MARK_OFFSET
398	SET_MARK_OFFSET;	581	SET_MARK_OFFSET;
399	#endif	582	#endif
400		583
401	New(54,PL_scopestack,16,I32);	584	New(54,PL_scopestack,8,I32);
402	PL_scopestack_ix = 0;	585	PL_scopestack_ix = 0;
403	PL_scopestack_max = 16;	586	PL_scopestack_max = 8;
404		587
405	New(54,PL_savestack,96,ANY);	588	New(54,PL_savestack,24,ANY);
406	PL_savestack_ix = 0;	589	PL_savestack_ix = 0;
407	PL_savestack_max = 96;	590	PL_savestack_max = 24;
408		591
409	#if !PERL_VERSION_ATLEAST (5,9,0)	592	#if !PERL_VERSION_ATLEAST (5,9,0)
410	New(54,PL_retstack,8,OP*);	593	New(54,PL_retstack,4,OP*);
411	PL_retstack_ix = 0;	594	PL_retstack_ix = 0;
412	PL_retstack_max = 8;	595	PL_retstack_max = 4;
413	#endif	596	#endif
414	}	597	}
		598	#endif
415		599
416	/*	600	/*
417	* destroy the stacks, the callchain etc...	601	* destroy the stacks, the callchain etc...
418	*/	602	*/
419	static void	603	static void
420	coro_destroy_stacks ()	604	coro_destroy_stacks (pTHX)
421	{	605	{
422	if (!IN_DESTRUCT)
423	{
424	/* is this ugly, I ask? */
425	LEAVE_SCOPE (0);
426
427	/* sure it is, but more important: is it correct?? :/ */
428	FREETMPS;
429
430	/POPSTACK_TO (PL_mainstack);//D//use/
431	}
432
433	while (PL_curstackinfo->si_next)	606	while (PL_curstackinfo->si_next)
434	PL_curstackinfo = PL_curstackinfo->si_next;	607	PL_curstackinfo = PL_curstackinfo->si_next;
435		608
436	while (PL_curstackinfo)	609	while (PL_curstackinfo)
437	{	610	{
438	PERL_SI *p = PL_curstackinfo->si_prev;	611	PERL_SI *p = PL_curstackinfo->si_prev;
439		612
440	{ /D//remove/
441	dSP;
442	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
443	PUTBACK; /* possibly superfluous */
444	}
445
446	if (!IN_DESTRUCT)	613	if (!IN_DESTRUCT)
447	{
448	dounwind (-1);/D//remove/
449	SvREFCNT_dec (PL_curstackinfo->si_stack);	614	SvREFCNT_dec (PL_curstackinfo->si_stack);
450	}
451		615
452	Safefree (PL_curstackinfo->si_cxstack);	616	Safefree (PL_curstackinfo->si_cxstack);
453	Safefree (PL_curstackinfo);	617	Safefree (PL_curstackinfo);
454	PL_curstackinfo = p;	618	PL_curstackinfo = p;
455	}	619	}
…		…
461	#if !PERL_VERSION_ATLEAST (5,9,0)	625	#if !PERL_VERSION_ATLEAST (5,9,0)
462	Safefree (PL_retstack);	626	Safefree (PL_retstack);
463	#endif	627	#endif
464	}	628	}
465		629
		630	static size_t
		631	coro_rss (pTHX_ struct coro *coro)
		632	{
		633	size_t rss = sizeof (*coro);
		634
		635	if (coro->mainstack)
		636	{
		637	perl_slots tmp_slot;
		638	perl_slots *slot;
		639
		640	if (coro->flags & CF_RUNNING)
		641	{
		642	slot = &tmp_slot;
		643
		644	#define VAR(name,type) slot->name = PL_ ## name;
		645	# include "state.h"
		646	#undef VAR
		647	}
		648	else
		649	slot = coro->slot;
		650
		651	rss += sizeof (slot->curstackinfo);
		652	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		653	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		654	rss += slot->tmps_max * sizeof (SV *);
		655	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		656	rss += slot->scopestack_max * sizeof (I32);
		657	rss += slot->savestack_max * sizeof (ANY);
		658
		659	#if !PERL_VERSION_ATLEAST (5,9,0)
		660	rss += slot->retstack_max * sizeof (OP *);
		661	#endif
		662	}
		663
		664	return rss;
		665	}
		666
		667	/ coroutine stack handling **********************************************/
		668
		669	#if 0
		670	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		671
		672	/*
		673	* This overrides the default magic get method of %SIG elements.
		674	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		675	* and instead of tryign to save and restore the hash elements, we just provide
		676	* readback here.
		677	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		678	* not expecting this to actually change the hook. This is a potential problem
		679	* when a schedule happens then, but we ignore this.
		680	*/
466	static void	681	static int
467	setup_coro (struct coro *coro)	682	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		683	{
		684	return orig_sigelem_get (aTHX_ sv, mg);
		685	const char *s = MgPV_nolen_const (mg);
		686
		687	if (*s == '_')
		688	{
		689	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		690	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		691	}
		692
		693	return orig_sigelem_get (aTHX_ sv, mg);
		694	}
		695	#endif
		696
		697	static void
		698	coro_setup (pTHX_ struct coro *coro)
468	{	699	{
469	/*	700	/*
470	* emulate part of the perl startup here.	701	* emulate part of the perl startup here.
471	*/	702	*/
472
473	coro_init_stacks ();	703	coro_init_stacks (aTHX);
474		704
		705	PL_runops = RUNOPS_DEFAULT;
		706	PL_curcop = &PL_compiling;
		707	PL_in_eval = EVAL_NULL;
475	PL_curcop = 0;	708	PL_comppad = 0;
476	PL_in_eval = 0;
477	PL_curpm = 0;	709	PL_curpm = 0;
		710	PL_curpad = 0;
		711	PL_localizing = 0;
		712	PL_dirty = 0;
		713	PL_restartop = 0;
		714
		715	/* recreate the die/warn hooks */
		716	PL_diehook = 0;
		717	hv_store (hv_sig, "__DIE__", sizeof ("__DIE__") - 1, newSV (0), 0);
		718	PL_diehook = SvREFCNT_inc (rv_diehook);
		719
		720	PL_warnhook = 0;
		721	hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, newSV (0), 0);
		722	PL_warnhook = SvREFCNT_inc (rv_warnhook);
		723
		724	GvSV (PL_defgv) = newSV (0);
		725	GvAV (PL_defgv) = coro->args; coro->args = 0;
		726	GvSV (PL_errgv) = newSV (0);
		727	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		728	PL_rs = newSVsv (GvSV (irsgv));
		729	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
478		730
479	{	731	{
480	dSP;	732	dSP;
481	LOGOP myop;	733	LOGOP myop;
482		734
483	/* I have no idea why this is needed, but it is */
484	PUSHMARK (SP);
485
486	SvREFCNT_dec (GvAV (PL_defgv));
487	GvAV (PL_defgv) = coro->args; coro->args = 0;
488
489	Zero (&myop, 1, LOGOP);	735	Zero (&myop, 1, LOGOP);
490	myop.op_next = Nullop;	736	myop.op_next = Nullop;
491	myop.op_flags = OPf_WANT_VOID;	737	myop.op_flags = OPf_WANT_VOID;
492		738
		739	PUSHMARK (SP);
		740	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		741	PUTBACK;
493	PL_op = (OP *)&myop;	742	PL_op = (OP *)&myop;
494
495	PUSHMARK (SP);
496	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
497	PUTBACK;
498	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	743	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
499	SPAGAIN;	744	SPAGAIN;
500
501	ENTER; /* necessary e.g. for dounwind */
502	}	745	}
503	}
504		746
		747	/* this newly created coroutine might be run on an existing cctx which most
		748	* likely was suspended in set_stacklevel, called from entersub.
		749	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		750	* so we ENTER here for symmetry
		751	*/
		752	ENTER;
		753	}
		754
505	static void	755	static void
		756	coro_destroy (pTHX_ struct coro *coro)
		757	{
		758	if (!IN_DESTRUCT)
		759	{
		760	/* restore all saved variables and stuff */
		761	LEAVE_SCOPE (0);
		762	assert (PL_tmps_floor == -1);
		763
		764	/* free all temporaries */
		765	FREETMPS;
		766	assert (PL_tmps_ix == -1);
		767
		768	/* unwind all extra stacks */
		769	POPSTACK_TO (PL_mainstack);
		770
		771	/* unwind main stack */
		772	dounwind (-1);
		773	}
		774
		775	SvREFCNT_dec (GvSV (PL_defgv));
		776	SvREFCNT_dec (GvAV (PL_defgv));
		777	SvREFCNT_dec (GvSV (PL_errgv));
		778	SvREFCNT_dec (PL_defoutgv);
		779	SvREFCNT_dec (PL_rs);
		780	SvREFCNT_dec (GvSV (irsgv));
		781
		782	SvREFCNT_dec (PL_diehook);
		783	SvREFCNT_dec (PL_warnhook);
		784
		785	SvREFCNT_dec (coro->saved_deffh);
		786	SvREFCNT_dec (coro->throw);
		787
		788	coro_destroy_stacks (aTHX);
		789	}
		790
		791	static void
506	free_coro_mortal ()	792	free_coro_mortal (pTHX)
507	{	793	{
508	if (coro_mortal)	794	if (expect_true (coro_mortal))
509	{	795	{
510	SvREFCNT_dec (coro_mortal);	796	SvREFCNT_dec (coro_mortal);
511	coro_mortal = 0;	797	coro_mortal = 0;
512	}	798	}
513	}	799	}
514		800
		801	static int
		802	runops_trace (pTHX)
		803	{
		804	COP *oldcop = 0;
		805	int oldcxix = -2;
		806	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		807	coro_cctx *cctx = coro->cctx;
		808
		809	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		810	{
		811	PERL_ASYNC_CHECK ();
		812
		813	if (cctx->flags & CC_TRACE_ALL)
		814	{
		815	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		816	{
		817	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		818	SV bot, top;
		819	AV av = newAV (); / return values */
		820	SV **cb;
		821	dSP;
		822
		823	GV *gv = CvGV (cx->blk_sub.cv);
		824	SV *fullname = sv_2mortal (newSV (0));
		825	if (isGV (gv))
		826	gv_efullname3 (fullname, gv, 0);
		827
		828	bot = PL_stack_base + cx->blk_oldsp + 1;
		829	top = cx->blk_gimme == G_ARRAY ? SP + 1
		830	: cx->blk_gimme == G_SCALAR ? bot + 1
		831	: bot;
		832
		833	av_extend (av, top - bot);
		834	while (bot < top)
		835	av_push (av, SvREFCNT_inc (*bot++));
		836
		837	PL_runops = RUNOPS_DEFAULT;
		838	ENTER;
		839	SAVETMPS;
		840	EXTEND (SP, 3);
		841	PUSHMARK (SP);
		842	PUSHs (&PL_sv_no);
		843	PUSHs (fullname);
		844	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		845	PUTBACK;
		846	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		847	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		848	SPAGAIN;
		849	FREETMPS;
		850	LEAVE;
		851	PL_runops = runops_trace;
		852	}
		853
		854	if (oldcop != PL_curcop)
		855	{
		856	oldcop = PL_curcop;
		857
		858	if (PL_curcop != &PL_compiling)
		859	{
		860	SV **cb;
		861
		862	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		863	{
		864	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		865
		866	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		867	{
		868	runops_proc_t old_runops = PL_runops;
		869	dSP;
		870	GV *gv = CvGV (cx->blk_sub.cv);
		871	SV *fullname = sv_2mortal (newSV (0));
		872
		873	if (isGV (gv))
		874	gv_efullname3 (fullname, gv, 0);
		875
		876	PL_runops = RUNOPS_DEFAULT;
		877	ENTER;
		878	SAVETMPS;
		879	EXTEND (SP, 3);
		880	PUSHMARK (SP);
		881	PUSHs (&PL_sv_yes);
		882	PUSHs (fullname);
		883	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		884	PUTBACK;
		885	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		886	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		887	SPAGAIN;
		888	FREETMPS;
		889	LEAVE;
		890	PL_runops = runops_trace;
		891	}
		892
		893	oldcxix = cxstack_ix;
		894	}
		895
		896	if (cctx->flags & CC_TRACE_LINE)
		897	{
		898	dSP;
		899
		900	PL_runops = RUNOPS_DEFAULT;
		901	ENTER;
		902	SAVETMPS;
		903	EXTEND (SP, 3);
		904	PL_runops = RUNOPS_DEFAULT;
		905	PUSHMARK (SP);
		906	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		907	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		908	PUTBACK;
		909	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		910	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		911	SPAGAIN;
		912	FREETMPS;
		913	LEAVE;
		914	PL_runops = runops_trace;
		915	}
		916	}
		917	}
		918	}
		919	}
		920
		921	TAINT_NOT;
		922	return 0;
		923	}
		924
		925	/* inject a fake call to Coro::State::_cctx_init into the execution */
		926	/* _cctx_init should be careful, as it could be called at almost any time */
		927	/* during execution of a perl program */
515	static void NOINLINE	928	static void NOINLINE
516	prepare_cctx (coro_cctx *cctx)	929	cctx_prepare (pTHX_ coro_cctx *cctx)
517	{	930	{
518	dSP;	931	dSP;
519	LOGOP myop;	932	LOGOP myop;
520		933
		934	PL_top_env = &PL_start_env;
		935
		936	if (cctx->flags & CC_TRACE)
		937	PL_runops = runops_trace;
		938
521	Zero (&myop, 1, LOGOP);	939	Zero (&myop, 1, LOGOP);
522	myop.op_next = PL_op;	940	myop.op_next = PL_op;
523	myop.op_flags = OPf_WANT_VOID;	941	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
524
525	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
526		942
527	PUSHMARK (SP);	943	PUSHMARK (SP);
		944	EXTEND (SP, 2);
		945	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
528	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	946	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
529	PUTBACK;	947	PUTBACK;
		948	PL_op = (OP *)&myop;
530	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	949	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
531	SPAGAIN;	950	SPAGAIN;
532	}	951	}
533		952
		953	/*
		954	* this is a _very_ stripped down perl interpreter ;)
		955	*/
534	static void	956	static void
535	coro_run (void *arg)	957	cctx_run (void *arg)
536	{	958	{
		959	dTHX;
		960
537	/* coro_run is the alternative epilogue of transfer() */	961	/* cctx_run is the alternative tail of transfer(), so unlock here. */
538	UNLOCK;	962	UNLOCK;
539		963
		964	/* we now skip the entersub that lead to transfer() */
		965	PL_op = PL_op->op_next;
		966
		967	/* inject a fake subroutine call to cctx_init */
		968	cctx_prepare (aTHX_ (coro_cctx *)arg);
		969
		970	/* somebody or something will hit me for both perl_run and PL_restartop */
		971	PL_restartop = PL_op;
		972	perl_run (PL_curinterp);
		973
540	/*	974	/*
541	* this is a _very_ stripped down perl interpreter ;)	975	* If perl-run returns we assume exit() was being called or the coro
		976	* fell off the end, which seems to be the only valid (non-bug)
		977	* reason for perl_run to return. We try to exit by jumping to the
		978	* bootstrap-time "top" top_env, as we cannot restore the "main"
		979	* coroutine as Coro has no such concept
542	*/	980	*/
543	PL_top_env = &PL_start_env;	981	PL_top_env = main_top_env;
544		982	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
545	/* inject call to cctx_init */
546	prepare_cctx ((coro_cctx *)arg);
547
548	/* somebody will hit me for both perl_run and PL_restartop */
549	perl_run (PL_curinterp);
550
551	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
552	abort ();
553	}	983	}
554		984
555	static coro_cctx *	985	static coro_cctx *
556	cctx_new ()	986	cctx_new ()
557	{	987	{
558	coro_cctx *cctx;	988	coro_cctx *cctx;
		989	void *stack_start;
		990	size_t stack_size;
559		991
560	++cctx_count;	992	++cctx_count;
561		993
562	New (0, cctx, 1, coro_cctx);	994	Newz (0, cctx, 1, coro_cctx);
563		995
564	#if HAVE_MMAP	996	#if HAVE_MMAP
565
566	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	997	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
567	/* mmap suppsedly does allocate-on-write for us */	998	/* mmap supposedly does allocate-on-write for us */
568	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	999	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
569		1000
570	if (cctx->sptr == (void *)-1)	1001	if (cctx->sptr != (void *)-1)
571	{
572	perror ("FATAL: unable to mmap stack for coroutine");
573	_exit (EXIT_FAILURE);
574	}	1002	{
575
576	# if STACKGUARD	1003	# if CORO_STACKGUARD
577	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	1004	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
578	# endif	1005	# endif
		1006	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		1007	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		1008	cctx->flags \|= CC_MAPPED;
		1009	}
		1010	else
		1011	#endif
		1012	{
		1013	cctx->ssize = coro_stacksize * (long)sizeof (long);
		1014	New (0, cctx->sptr, coro_stacksize, long);
579		1015
580	#else
581
582	cctx->ssize = STACKSIZE * (long)sizeof (long);
583	New (0, cctx->sptr, STACKSIZE, long);
584
585	if (!cctx->sptr)	1016	if (!cctx->sptr)
586	{	1017	{
587	perror ("FATAL: unable to malloc stack for coroutine");	1018	perror ("FATAL: unable to allocate stack for coroutine");
588	_exit (EXIT_FAILURE);	1019	_exit (EXIT_FAILURE);
589	}	1020	}
590		1021
591	#endif	1022	stack_start = cctx->sptr;
		1023	stack_size = cctx->ssize;
		1024	}
592		1025
593	#if USE_VALGRIND	1026	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
594	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1027	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
595	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
596	cctx->ssize + (char *)cctx->sptr
597	);
598	#endif
599
600	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
601		1028
602	return cctx;	1029	return cctx;
603	}	1030	}
604		1031
605	static void	1032	static void
606	cctx_free (coro_cctx *cctx)	1033	cctx_destroy (coro_cctx *cctx)
607	{	1034	{
608	if (!cctx)	1035	if (!cctx)
609	return;	1036	return;
610		1037
611	--cctx_count;	1038	--cctx_count;
612		1039
613	#if USE_VALGRIND	1040	#if CORO_USE_VALGRIND
614	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1041	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
615	#endif	1042	#endif
616		1043
617	#if HAVE_MMAP	1044	#if HAVE_MMAP
		1045	if (cctx->flags & CC_MAPPED)
618	munmap (cctx->sptr, cctx->ssize);	1046	munmap (cctx->sptr, cctx->ssize);
619	#else	1047	else
		1048	#endif
620	Safefree (cctx->sptr);	1049	Safefree (cctx->sptr);
621	#endif
622		1050
623	Safefree (cctx);	1051	Safefree (cctx);
624	}	1052	}
625		1053
		1054	/* wether this cctx should be destructed */
		1055	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1056
626	static coro_cctx *	1057	static coro_cctx *
627	cctx_get ()	1058	cctx_get (pTHX)
628	{	1059	{
629	coro_cctx *cctx;	1060	while (expect_true (cctx_first))
630
631	if (cctx_first)
632	{	1061	{
		1062	coro_cctx *cctx = cctx_first;
		1063	cctx_first = cctx->next;
633	--cctx_idle;	1064	--cctx_idle;
634	cctx = cctx_first;	1065
635	cctx_first = cctx->next;	1066	if (expect_true (!CCTX_EXPIRED (cctx)))
636	}	1067	return cctx;
637	else	1068
638	{	1069	cctx_destroy (cctx);
639	cctx = cctx_new ();
640	PL_op = PL_op->op_next;
641	}	1070	}
642		1071
643	return cctx;	1072	return cctx_new ();
644	}	1073	}
645		1074
646	static void	1075	static void
647	cctx_put (coro_cctx *cctx)	1076	cctx_put (coro_cctx *cctx)
648	{	1077	{
		1078	/* free another cctx if overlimit */
		1079	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
		1080	{
		1081	coro_cctx *first = cctx_first;
		1082	cctx_first = first->next;
		1083	--cctx_idle;
		1084
		1085	cctx_destroy (first);
		1086	}
		1087
649	++cctx_idle;	1088	++cctx_idle;
650	cctx->next = cctx_first;	1089	cctx->next = cctx_first;
651	cctx_first = cctx;	1090	cctx_first = cctx;
652	}	1091	}
653		1092
654	/* never call directly, always through the coro_state_transfer global variable */	1093	/ coroutine switching ***************************************************/
		1094
		1095	static void
		1096	transfer_check (pTHX_ struct coro prev, struct coro next)
		1097	{
		1098	if (expect_true (prev != next))
		1099	{
		1100	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1101	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1102
		1103	if (expect_false (next->flags & CF_RUNNING))
		1104	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1105
		1106	if (expect_false (next->flags & CF_DESTROYED))
		1107	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1108
		1109	if (
		1110	#if PERL_VERSION_ATLEAST (5,9,0)
		1111	expect_false (PL_parser)
		1112	#else
		1113	expect_false (PL_lex_state != LEX_NOTPARSING)
		1114	#endif
		1115	)
		1116	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1117	}
		1118	}
		1119
		1120	/* always use the TRANSFER macro */
655	static void NOINLINE	1121	static void NOINLINE
656	transfer (struct coro prev, struct coro next, int flags)	1122	transfer (pTHX_ struct coro prev, struct coro next)
657	{	1123	{
658	dSTACKLEVEL;	1124	dSTACKLEVEL;
		1125	static volatile int has_throw;
659		1126
660	/* sometimes transfer is only called to set idle_sp */	1127	/* sometimes transfer is only called to set idle_sp */
661	if (flags == TRANSFER_SET_STACKLEVEL)	1128	if (expect_false (!next))
		1129	{
662	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1130	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1131	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1132	}
663	else if (prev != next)	1133	else if (expect_true (prev != next))
664	{	1134	{
665	coro_cctx *prev__cctx;	1135	coro_cctx *prev__cctx;
666		1136
		1137	if (expect_false (prev->flags & CF_NEW))
		1138	{
		1139	/* create a new empty context */
		1140	Newz (0, prev->cctx, 1, coro_cctx);
		1141	prev->flags &= ~CF_NEW;
		1142	prev->flags \|= CF_RUNNING;
		1143	}
		1144
		1145	prev->flags &= ~CF_RUNNING;
		1146	next->flags \|= CF_RUNNING;
		1147
667	LOCK;	1148	LOCK;
668		1149
669	if (next->mainstack)	1150	/* first get rid of the old state */
		1151	save_perl (aTHX_ prev);
		1152
		1153	if (expect_false (next->flags & CF_NEW))
670	{	1154	{
671	/* coroutine already started */	1155	/* need to start coroutine */
672	SAVE (prev, flags);	1156	next->flags &= ~CF_NEW;
673	LOAD (next);	1157	/* setup coroutine call */
		1158	coro_setup (aTHX_ next);
674	}	1159	}
675	else	1160	else
		1161	load_perl (aTHX_ next);
		1162
		1163	prev__cctx = prev->cctx;
		1164
		1165	/* possibly "free" the cctx */
		1166	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
676	{	1167	{
677	/* need to start coroutine */	1168	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
678	/* first get rid of the old state */	1169	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
679	SAVE (prev, -1);	1170
680	/* setup coroutine call */
681	setup_coro (next);
682	/* need a stack */
683	next->cctx = 0;	1171	prev->cctx = 0;
		1172
		1173	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1174	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1175	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1176	if (!next->cctx)
		1177	next->cctx = cctx_get (aTHX);
		1178
		1179	cctx_put (prev__cctx);
684	}	1180	}
685		1181
686	if (!prev->cctx)	1182	++next->usecount;
687	/* create a new empty context */
688	Newz (0, prev->cctx, 1, coro_cctx);
689		1183
690	prev__cctx = prev->cctx;
691
692	/* possibly "free" the cctx */
693	if (prev__cctx->idle_sp == STACKLEVEL)
694	{
695	cctx_put (prev__cctx);
696	prev->cctx = 0;
697	}
698
699	if (!next->cctx)	1184	if (expect_true (!next->cctx))
700	next->cctx = cctx_get ();	1185	next->cctx = cctx_get (aTHX);
701		1186
		1187	has_throw = !!next->throw;
		1188
702	if (prev__cctx != next->cctx)	1189	if (expect_false (prev__cctx != next->cctx))
703	{	1190	{
704	prev__cctx->top_env = PL_top_env;	1191	prev__cctx->top_env = PL_top_env;
705	PL_top_env = next->cctx->top_env;	1192	PL_top_env = next->cctx->top_env;
706	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1193	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
707	}	1194	}
708		1195
709	free_coro_mortal ();	1196	free_coro_mortal (aTHX);
710
711	UNLOCK;	1197	UNLOCK;
		1198
		1199	if (expect_false (has_throw))
		1200	{
		1201	struct coro *coro = SvSTATE (coro_current);
		1202
		1203	if (coro->throw)
		1204	{
		1205	SV *exception = coro->throw;
		1206	coro->throw = 0;
		1207	sv_setsv (ERRSV, exception);
		1208	croak (0);
		1209	}
		1210	}
712	}	1211	}
713	}	1212	}
714		1213
715	struct transfer_args	1214	struct transfer_args
716	{	1215	{
717	struct coro prev, next;	1216	struct coro prev, next;
718	int flags;
719	};	1217	};
720		1218
721	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1219	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1220	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
722		1221
		1222	/ high level stuff ******************************************************/
		1223
723	static void	1224	static int
724	coro_state_destroy (struct coro *coro)	1225	coro_state_destroy (pTHX_ struct coro *coro)
725	{	1226	{
726	if (coro->refcnt--)	1227	if (coro->flags & CF_DESTROYED)
727	return;	1228	return 0;
		1229
		1230	coro->flags \|= CF_DESTROYED;
		1231
		1232	if (coro->flags & CF_READY)
		1233	{
		1234	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1235	/* alternative: look through all ready queues and remove the coro */
		1236	LOCK;
		1237	--coro_nready;
		1238	UNLOCK;
		1239	}
		1240	else
		1241	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
728		1242
729	if (coro->mainstack && coro->mainstack != main_mainstack)	1243	if (coro->mainstack && coro->mainstack != main_mainstack)
730	{	1244	{
731	struct coro temp;	1245	struct coro temp;
732		1246
733	SAVE ((&temp), TRANSFER_SAVE_ALL);	1247	if (coro->flags & CF_RUNNING)
734	LOAD (coro);	1248	croak ("FATAL: tried to destroy currently running coroutine");
735		1249
736	coro_destroy_stacks ();	1250	save_perl (aTHX_ &temp);
		1251	load_perl (aTHX_ coro);
737		1252
738	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1253	coro_destroy (aTHX_ coro);
739		1254
		1255	load_perl (aTHX_ &temp);
		1256
740	coro->mainstack = 0;	1257	coro->slot = 0;
741	}	1258	}
742		1259
743	cctx_free (coro->cctx);	1260	cctx_destroy (coro->cctx);
744	SvREFCNT_dec (coro->args);	1261	SvREFCNT_dec (coro->args);
745	Safefree (coro);	1262
		1263	if (coro->next) coro->next->prev = coro->prev;
		1264	if (coro->prev) coro->prev->next = coro->next;
		1265	if (coro == coro_first) coro_first = coro->next;
		1266
		1267	return 1;
746	}	1268	}
747		1269
748	static int	1270	static int
749	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1271	coro_state_free (pTHX_ SV sv, MAGIC mg)
750	{	1272	{
751	struct coro coro = (struct coro )mg->mg_ptr;	1273	struct coro coro = (struct coro )mg->mg_ptr;
752	mg->mg_ptr = 0;	1274	mg->mg_ptr = 0;
753		1275
		1276	coro->hv = 0;
		1277
		1278	if (--coro->refcnt < 0)
		1279	{
754	coro_state_destroy (coro);	1280	coro_state_destroy (aTHX_ coro);
		1281	Safefree (coro);
		1282	}
755		1283
756	return 0;	1284	return 0;
757	}	1285	}
758		1286
759	static int	1287	static int
…		…
766	return 0;	1294	return 0;
767	}	1295	}
768		1296
769	static MGVTBL coro_state_vtbl = {	1297	static MGVTBL coro_state_vtbl = {
770	0, 0, 0, 0,	1298	0, 0, 0, 0,
771	coro_state_clear,	1299	coro_state_free,
772	0,	1300	0,
773	#ifdef MGf_DUP	1301	#ifdef MGf_DUP
774	coro_state_dup,	1302	coro_state_dup,
775	#else	1303	#else
776	# define MGf_DUP 0	1304	# define MGf_DUP 0
777	#endif	1305	#endif
778	};	1306	};
779		1307
780	static struct coro *
781	SvSTATE (SV *coro)
782	{
783	HV *stash;
784	MAGIC *mg;
785
786	if (SvROK (coro))
787	coro = SvRV (coro);
788
789	stash = SvSTASH (coro);
790	if (stash != coro_stash && stash != coro_state_stash)
791	{
792	/* very slow, but rare, check */
793	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
794	croak ("Coro::State object required");
795	}
796
797	mg = SvMAGIC (coro);
798	assert (mg->mg_type == PERL_MAGIC_ext);
799	return (struct coro *)mg->mg_ptr;
800	}
801
802	static void	1308	static void
803	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1309	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
804	{	1310	{
805	ta->prev = SvSTATE (prev);	1311	ta->prev = SvSTATE (prev_sv);
806	ta->next = SvSTATE (next);	1312	ta->next = SvSTATE (next_sv);
807	ta->flags = flags;	1313	TRANSFER_CHECK (*ta);
808	}	1314	}
809		1315
810	static void	1316	static void
811	api_transfer (SV prev, SV next, int flags)	1317	api_transfer (SV prev_sv, SV next_sv)
812	{	1318	{
813	dTHX;	1319	dTHX;
814	struct transfer_args ta;	1320	struct transfer_args ta;
815		1321
816	prepare_transfer (&ta, prev, next, flags);	1322	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
817	TRANSFER (ta);	1323	TRANSFER (ta);
818	}	1324	}
819		1325
820	/ Coro ******************************************************************/	1326	/ Coro ******************************************************************/
821		1327
822	#define PRIO_MAX 3
823	#define PRIO_HIGH 1
824	#define PRIO_NORMAL 0
825	#define PRIO_LOW -1
826	#define PRIO_IDLE -3
827	#define PRIO_MIN -4
828
829	/* for Coro.pm */
830	static GV coro_current, coro_idle;
831	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
832	static int coro_nready;
833
834	static void	1328	static void
835	coro_enq (SV *sv)	1329	coro_enq (pTHX_ SV *coro_sv)
		1330	{
		1331	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
		1332	}
		1333
		1334	static SV *
		1335	coro_deq (pTHX)
836	{	1336	{
837	int prio;	1337	int prio;
838		1338
839	if (SvTYPE (sv) != SVt_PVHV)
840	croak ("Coro::ready tried to enqueue something that is not a coroutine");
841
842	prio = SvSTATE (sv)->prio;
843
844	av_push (coro_ready [prio - PRIO_MIN], sv);
845	coro_nready++;
846	}
847
848	static SV *
849	coro_deq (int min_prio)
850	{
851	int prio = PRIO_MAX - PRIO_MIN;
852
853	min_prio -= PRIO_MIN;
854	if (min_prio < 0)
855	min_prio = 0;
856
857	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1339	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
858	if (AvFILLp (coro_ready [prio]) >= 0)	1340	if (AvFILLp (coro_ready [prio]) >= 0)
859	{
860	coro_nready--;
861	return av_shift (coro_ready [prio]);	1341	return av_shift (coro_ready [prio]);
862	}
863		1342
864	return 0;	1343	return 0;
865	}	1344	}
866		1345
867	static void	1346	static int
868	api_ready (SV *coro)	1347	api_ready (SV *coro_sv)
869	{	1348	{
870	dTHX;	1349	dTHX;
		1350	struct coro *coro;
871		1351
872	if (SvROK (coro))	1352	if (SvROK (coro_sv))
873	coro = SvRV (coro);	1353	coro_sv = SvRV (coro_sv);
		1354
		1355	coro = SvSTATE (coro_sv);
		1356
		1357	if (coro->flags & CF_READY)
		1358	return 0;
		1359
		1360	coro->flags \|= CF_READY;
874		1361
875	LOCK;	1362	LOCK;
876	coro_enq (SvREFCNT_inc (coro));	1363	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1364	++coro_nready;
877	UNLOCK;	1365	UNLOCK;
878	}
879		1366
		1367	return 1;
		1368	}
		1369
880	static void	1370	static int
		1371	api_is_ready (SV *coro_sv)
		1372	{
		1373	dTHX;
		1374	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1375	}
		1376
		1377	static void
881	prepare_schedule (struct transfer_args *ta)	1378	prepare_schedule (pTHX_ struct transfer_args *ta)
882	{	1379	{
883	SV current, prev, *next;	1380	SV prev_sv, next_sv;
884
885	current = GvSV (coro_current);
886		1381
887	for (;;)	1382	for (;;)
888	{	1383	{
889	LOCK;	1384	LOCK;
890	next = coro_deq (PRIO_MIN);	1385	next_sv = coro_deq (aTHX);
		1386
		1387	/* nothing to schedule: call the idle handler */
		1388	if (expect_false (!next_sv))
		1389	{
		1390	dSP;
		1391	UNLOCK;
		1392
		1393	ENTER;
		1394	SAVETMPS;
		1395
		1396	PUSHMARK (SP);
		1397	PUTBACK;
		1398	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1399	SPAGAIN;
		1400
		1401	FREETMPS;
		1402	LEAVE;
		1403	continue;
		1404	}
		1405
		1406	ta->next = SvSTATE (next_sv);
		1407
		1408	/* cannot transfer to destroyed coros, skip and look for next */
		1409	if (expect_false (ta->next->flags & CF_DESTROYED))
		1410	{
		1411	UNLOCK;
		1412	SvREFCNT_dec (next_sv);
		1413	/* coro_nready is already taken care of by destroy */
		1414	continue;
		1415	}
		1416
		1417	--coro_nready;
891	UNLOCK;	1418	UNLOCK;
892
893	if (next)
894	break;	1419	break;
895
896	{
897	dSP;
898
899	ENTER;
900	SAVETMPS;
901
902	PUSHMARK (SP);
903	PUTBACK;
904	call_sv (GvSV (coro_idle), G_DISCARD);
905
906	FREETMPS;
907	LEAVE;
908	}	1420	}
909	}
910
911	prev = SvRV (current);
912	SvRV (current) = next;
913		1421
914	/* free this only after the transfer */	1422	/* free this only after the transfer */
		1423	prev_sv = SvRV (coro_current);
		1424	ta->prev = SvSTATE (prev_sv);
		1425	TRANSFER_CHECK (*ta);
		1426	assert (ta->next->flags & CF_READY);
		1427	ta->next->flags &= ~CF_READY;
		1428	SvRV_set (coro_current, next_sv);
		1429
915	LOCK;	1430	LOCK;
916	free_coro_mortal ();	1431	free_coro_mortal (aTHX);
		1432	coro_mortal = prev_sv;
917	UNLOCK;	1433	UNLOCK;
918	coro_mortal = prev;
919
920	ta->prev = SvSTATE (prev);
921	ta->next = SvSTATE (next);
922	ta->flags = TRANSFER_SAVE_ALL;
923	}	1434	}
924		1435
925	static void	1436	static void
926	prepare_cede (struct transfer_args *ta)	1437	prepare_cede (pTHX_ struct transfer_args *ta)
927	{	1438	{
928	LOCK;	1439	api_ready (coro_current);
929	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
930	UNLOCK;
931
932	prepare_schedule (ta);	1440	prepare_schedule (aTHX_ ta);
		1441	}
		1442
		1443	static int
		1444	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1445	{
		1446	if (coro_nready)
		1447	{
		1448	SV *prev = SvRV (coro_current);
		1449	prepare_schedule (aTHX_ ta);
		1450	api_ready (prev);
		1451	return 1;
		1452	}
		1453	else
		1454	return 0;
933	}	1455	}
934		1456
935	static void	1457	static void
936	api_schedule (void)	1458	api_schedule (void)
937	{	1459	{
938	dTHX;	1460	dTHX;
939	struct transfer_args ta;	1461	struct transfer_args ta;
940		1462
941	prepare_schedule (&ta);	1463	prepare_schedule (aTHX_ &ta);
942	TRANSFER (ta);	1464	TRANSFER (ta);
943	}	1465	}
944		1466
945	static void	1467	static int
946	api_cede (void)	1468	api_cede (void)
947	{	1469	{
948	dTHX;	1470	dTHX;
949	struct transfer_args ta;	1471	struct transfer_args ta;
950		1472
951	prepare_cede (&ta);	1473	prepare_cede (aTHX_ &ta);
		1474
		1475	if (expect_true (ta.prev != ta.next))
		1476	{
952	TRANSFER (ta);	1477	TRANSFER (ta);
		1478	return 1;
		1479	}
		1480	else
		1481	return 0;
953	}	1482	}
954		1483
		1484	static int
		1485	api_cede_notself (void)
		1486	{
		1487	dTHX;
		1488	struct transfer_args ta;
		1489
		1490	if (prepare_cede_notself (aTHX_ &ta))
		1491	{
		1492	TRANSFER (ta);
		1493	return 1;
		1494	}
		1495	else
		1496	return 0;
		1497	}
		1498
		1499	static void
		1500	api_trace (SV *coro_sv, int flags)
		1501	{
		1502	dTHX;
		1503	struct coro *coro = SvSTATE (coro_sv);
		1504
		1505	if (flags & CC_TRACE)
		1506	{
		1507	if (!coro->cctx)
		1508	coro->cctx = cctx_new ();
		1509	else if (!(coro->cctx->flags & CC_TRACE))
		1510	croak ("cannot enable tracing on coroutine with custom stack");
		1511
		1512	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1513	}
		1514	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1515	{
		1516	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1517
		1518	if (coro->flags & CF_RUNNING)
		1519	PL_runops = RUNOPS_DEFAULT;
		1520	else
		1521	coro->slot->runops = RUNOPS_DEFAULT;
		1522	}
		1523	}
		1524
955	MODULE = Coro::State PACKAGE = Coro::State	1525	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
956		1526
957	PROTOTYPES: DISABLE	1527	PROTOTYPES: DISABLE
958		1528
959	BOOT:	1529	BOOT:
960	{	1530	{
961	#ifdef USE_ITHREADS	1531	#ifdef USE_ITHREADS
962	MUTEX_INIT (&coro_mutex);	1532	MUTEX_INIT (&coro_mutex);
963	#endif	1533	#endif
964	BOOT_PAGESIZE;	1534	BOOT_PAGESIZE;
965		1535
		1536	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1537	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1538	#if 0
		1539	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1540	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1541	#endif
		1542	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1543	rv_diehook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1544	rv_warnhook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1545
966	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1546	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
967		1547
968	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1548	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
969	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1549	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
970	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1550	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1551	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
971		1552
972	main_mainstack = PL_mainstack;	1553	main_mainstack = PL_mainstack;
		1554	main_top_env = PL_top_env;
		1555
		1556	while (main_top_env->je_prev)
		1557	main_top_env = main_top_env->je_prev;
973		1558
974	coroapi.ver = CORO_API_VERSION;	1559	coroapi.ver = CORO_API_VERSION;
		1560	coroapi.rev = CORO_API_REVISION;
975	coroapi.transfer = api_transfer;	1561	coroapi.transfer = api_transfer;
976		1562
977	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1563	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
978	}	1564	}
979		1565
980	SV *	1566	SV *
981	new (char *klass, ...)	1567	new (char *klass, ...)
982	CODE:	1568	CODE:
983	{	1569	{
984	struct coro *coro;	1570	struct coro *coro;
		1571	MAGIC *mg;
985	HV *hv;	1572	HV *hv;
986	int i;	1573	int i;
987		1574
988	Newz (0, coro, 1, struct coro);	1575	Newz (0, coro, 1, struct coro);
989	coro->args = newAV ();	1576	coro->args = newAV ();
		1577	coro->flags = CF_NEW;
990		1578
		1579	if (coro_first) coro_first->prev = coro;
		1580	coro->next = coro_first;
		1581	coro_first = coro;
		1582
991	hv = newHV ();	1583	coro->hv = hv = newHV ();
992	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1584	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1585	mg->mg_flags \|= MGf_DUP;
993	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1586	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
994		1587
		1588	av_extend (coro->args, items - 1);
995	for (i = 1; i < items; i++)	1589	for (i = 1; i < items; i++)
996	av_push (coro->args, newSVsv (ST (i)));	1590	av_push (coro->args, newSVsv (ST (i)));
997	}	1591	}
998	OUTPUT:	1592	OUTPUT:
999	RETVAL	1593	RETVAL
1000		1594
		1595	# these not obviously related functions are all rolled into the same xs
		1596	# function to increase chances that they all will call transfer with the same
		1597	# stack offset
1001	void	1598	void
1002	_set_stacklevel (...)	1599	_set_stacklevel (...)
1003	ALIAS:	1600	ALIAS:
1004	Coro::State::transfer = 1	1601	Coro::State::transfer = 1
1005	Coro::schedule = 2	1602	Coro::schedule = 2
1006	Coro::cede = 3	1603	Coro::cede = 3
1007	Coro::Cont::yield = 4	1604	Coro::cede_notself = 4
1008	CODE:	1605	CODE:
1009	{	1606	{
1010	struct transfer_args ta;	1607	struct transfer_args ta;
1011		1608
		1609	PUTBACK;
1012	switch (ix)	1610	switch (ix)
1013	{	1611	{
1014	case 0:	1612	case 0:
1015	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1613	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1016	ta.next = 0;	1614	ta.next = 0;
1017	ta.flags = TRANSFER_SET_STACKLEVEL;
1018	break;	1615	break;
1019		1616
1020	case 1:	1617	case 1:
1021	if (items != 3)	1618	if (items != 2)
1022	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1619	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1023		1620
1024	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1621	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1025	break;	1622	break;
1026		1623
1027	case 2:	1624	case 2:
1028	prepare_schedule (&ta);	1625	prepare_schedule (aTHX_ &ta);
1029	break;	1626	break;
1030		1627
1031	case 3:	1628	case 3:
1032	prepare_cede (&ta);	1629	prepare_cede (aTHX_ &ta);
1033	break;	1630	break;
1034		1631
1035	case 4:	1632	case 4:
1036	{	1633	if (!prepare_cede_notself (aTHX_ &ta))
1037	SV *yieldstack;	1634	XSRETURN_EMPTY;
1038	SV *sv;
1039	AV *defav = GvAV (PL_defgv);
1040		1635
1041	yieldstack = *hv_fetch (
1042	(HV *)SvRV (GvSV (coro_current)),
1043	"yieldstack", sizeof ("yieldstack") - 1,
1044	0
1045	);
1046
1047	/* set up @_ -- ugly */
1048	av_clear (defav);
1049	av_fill (defav, items - 1);
1050	while (items--)
1051	av_store (defav, items, SvREFCNT_inc (ST(items)));
1052
1053	sv = av_pop ((AV *)SvRV (yieldstack));
1054	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1055	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1056	ta.flags = 0;
1057	SvREFCNT_dec (sv);
1058	}
1059	break;	1636	break;
1060
1061	}	1637	}
		1638	SPAGAIN;
1062		1639
		1640	BARRIER;
		1641	PUTBACK;
1063	TRANSFER (ta);	1642	TRANSFER (ta);
		1643	SPAGAIN; /* might be the sp of a different coroutine now */
		1644	/* be extra careful not to ever do anything after TRANSFER */
1064	}	1645	}
1065		1646
1066	void	1647	bool
1067	_clone_state_from (SV dst, SV src)	1648	_destroy (SV *coro_sv)
1068	CODE:	1649	CODE:
1069	{	1650	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1070	struct coro *coro_src = SvSTATE (src);	1651	OUTPUT:
1071		1652	RETVAL
1072	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1073
1074	++coro_src->refcnt;
1075	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1076	}
1077		1653
1078	void	1654	void
1079	_exit (code)	1655	_exit (code)
1080	int code	1656	int code
1081	PROTOTYPE: $	1657	PROTOTYPE: $
1082	CODE:	1658	CODE:
1083	_exit (code);	1659	_exit (code);
1084		1660
1085	int	1661	int
		1662	cctx_stacksize (int new_stacksize = 0)
		1663	CODE:
		1664	RETVAL = coro_stacksize;
		1665	if (new_stacksize)
		1666	coro_stacksize = new_stacksize;
		1667	OUTPUT:
		1668	RETVAL
		1669
		1670	int
1086	cctx_count ()	1671	cctx_count ()
1087	CODE:	1672	CODE:
1088	RETVAL = cctx_count;	1673	RETVAL = cctx_count;
1089	OUTPUT:	1674	OUTPUT:
1090	RETVAL	1675	RETVAL
…		…
1094	CODE:	1679	CODE:
1095	RETVAL = cctx_idle;	1680	RETVAL = cctx_idle;
1096	OUTPUT:	1681	OUTPUT:
1097	RETVAL	1682	RETVAL
1098		1683
		1684	void
		1685	list ()
		1686	PPCODE:
		1687	{
		1688	struct coro *coro;
		1689	for (coro = coro_first; coro; coro = coro->next)
		1690	if (coro->hv)
		1691	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1692	}
		1693
		1694	void
		1695	call (Coro::State coro, SV *coderef)
		1696	ALIAS:
		1697	eval = 1
		1698	CODE:
		1699	{
		1700	if (coro->mainstack)
		1701	{
		1702	struct coro temp;
		1703
		1704	if (!(coro->flags & CF_RUNNING))
		1705	{
		1706	PUTBACK;
		1707	save_perl (aTHX_ &temp);
		1708	load_perl (aTHX_ coro);
		1709	}
		1710
		1711	{
		1712	dSP;
		1713	ENTER;
		1714	SAVETMPS;
		1715	PUTBACK;
		1716	PUSHSTACK;
		1717	PUSHMARK (SP);
		1718
		1719	if (ix)
		1720	eval_sv (coderef, 0);
		1721	else
		1722	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1723
		1724	POPSTACK;
		1725	SPAGAIN;
		1726	FREETMPS;
		1727	LEAVE;
		1728	PUTBACK;
		1729	}
		1730
		1731	if (!(coro->flags & CF_RUNNING))
		1732	{
		1733	save_perl (aTHX_ coro);
		1734	load_perl (aTHX_ &temp);
		1735	SPAGAIN;
		1736	}
		1737	}
		1738	}
		1739
		1740	SV *
		1741	is_ready (Coro::State coro)
		1742	PROTOTYPE: $
		1743	ALIAS:
		1744	is_ready = CF_READY
		1745	is_running = CF_RUNNING
		1746	is_new = CF_NEW
		1747	is_destroyed = CF_DESTROYED
		1748	CODE:
		1749	RETVAL = boolSV (coro->flags & ix);
		1750	OUTPUT:
		1751	RETVAL
		1752
		1753	void
		1754	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1755
		1756	SV *
		1757	has_stack (Coro::State coro)
		1758	PROTOTYPE: $
		1759	CODE:
		1760	RETVAL = boolSV (!!coro->cctx);
		1761	OUTPUT:
		1762	RETVAL
		1763
		1764	int
		1765	is_traced (Coro::State coro)
		1766	PROTOTYPE: $
		1767	CODE:
		1768	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1769	OUTPUT:
		1770	RETVAL
		1771
		1772	IV
		1773	rss (Coro::State coro)
		1774	PROTOTYPE: $
		1775	ALIAS:
		1776	usecount = 1
		1777	CODE:
		1778	switch (ix)
		1779	{
		1780	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1781	case 1: RETVAL = coro->usecount; break;
		1782	}
		1783	OUTPUT:
		1784	RETVAL
		1785
		1786
1099	MODULE = Coro::State PACKAGE = Coro	1787	MODULE = Coro::State PACKAGE = Coro
1100		1788
1101	BOOT:	1789	BOOT:
1102	{	1790	{
1103	int i;	1791	int i;
1104		1792
		1793	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1794	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1795	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1796
		1797	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1798	SvREADONLY_on (coro_current);
		1799
1105	coro_stash = gv_stashpv ("Coro", TRUE);	1800	coro_stash = gv_stashpv ("Coro", TRUE);
1106		1801
1107	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1802	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1108	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1803	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1109	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1804	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1110	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1805	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1111	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1806	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1112	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1807	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1113		1808
1114	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1115	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1116
1117	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1809	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1118	coro_ready[i] = newAV ();	1810	coro_ready[i] = newAV ();
1119		1811
1120	{	1812	{
1121	SV *sv = perl_get_sv("Coro::API", 1);	1813	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1814	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1122		1815
1123	coroapi.schedule = api_schedule;	1816	coroapi.schedule = api_schedule;
1124	coroapi.cede = api_cede;	1817	coroapi.cede = api_cede;
		1818	coroapi.cede_notself = api_cede_notself;
1125	coroapi.ready = api_ready;	1819	coroapi.ready = api_ready;
		1820	coroapi.is_ready = api_is_ready;
1126	coroapi.nready = &coro_nready;	1821	coroapi.nready = &coro_nready;
1127	coroapi.current = coro_current;	1822	coroapi.current = coro_current;
1128		1823
1129	GCoroAPI = &coroapi;	1824	GCoroAPI = &coroapi;
1130	sv_setiv (sv, (IV)&coroapi);	1825	sv_setiv (sv, (IV)&coroapi);
1131	SvREADONLY_on (sv);	1826	SvREADONLY_on (sv);
1132	}	1827	}
1133	}	1828	}
		1829
		1830	void
		1831	_set_current (SV *current)
		1832	PROTOTYPE: $
		1833	CODE:
		1834	SvREFCNT_dec (SvRV (coro_current));
		1835	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1134		1836
1135	int	1837	int
1136	prio (Coro::State coro, int newprio = 0)	1838	prio (Coro::State coro, int newprio = 0)
1137	ALIAS:	1839	ALIAS:
1138	nice = 1	1840	nice = 1
…		…
1141	RETVAL = coro->prio;	1843	RETVAL = coro->prio;
1142		1844
1143	if (items > 1)	1845	if (items > 1)
1144	{	1846	{
1145	if (ix)	1847	if (ix)
1146	newprio += coro->prio;	1848	newprio = coro->prio - newprio;
1147		1849
1148	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1850	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1149	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1851	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1150		1852
1151	coro->prio = newprio;	1853	coro->prio = newprio;
1152	}	1854	}
1153	}	1855	}
		1856	OUTPUT:
		1857	RETVAL
1154		1858
1155	void	1859	SV *
1156	ready (SV *self)	1860	ready (SV *self)
1157	PROTOTYPE: $	1861	PROTOTYPE: $
1158	CODE:	1862	CODE:
1159	api_ready (self);	1863	RETVAL = boolSV (api_ready (self));
		1864	OUTPUT:
		1865	RETVAL
1160		1866
1161	int	1867	int
1162	nready (...)	1868	nready (...)
1163	PROTOTYPE:	1869	PROTOTYPE:
1164	CODE:	1870	CODE:
1165	RETVAL = coro_nready;	1871	RETVAL = coro_nready;
1166	OUTPUT:	1872	OUTPUT:
1167	RETVAL	1873	RETVAL
1168		1874
		1875	void
		1876	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1877	PROTOTYPE: $;$
		1878	CODE:
		1879	SvREFCNT_dec (self->throw);
		1880	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1881
		1882	# for async_pool speedup
		1883	void
		1884	_pool_1 (SV *cb)
		1885	CODE:
		1886	{
		1887	struct coro *coro = SvSTATE (coro_current);
		1888	HV hv = (HV )SvRV (coro_current);
		1889	AV *defav = GvAV (PL_defgv);
		1890	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1891	AV *invoke_av;
		1892	int i, len;
		1893
		1894	if (!invoke)
		1895	croak ("\3async_pool terminate\2\n");
		1896
		1897	SvREFCNT_dec (coro->saved_deffh);
		1898	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1899
		1900	hv_store (hv, "desc", sizeof ("desc") - 1,
		1901	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1902
		1903	invoke_av = (AV *)SvRV (invoke);
		1904	len = av_len (invoke_av);
		1905
		1906	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1907
		1908	if (len > 0)
		1909	{
		1910	av_fill (defav, len - 1);
		1911	for (i = 0; i < len; ++i)
		1912	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1913	}
		1914
		1915	SvREFCNT_dec (invoke);
		1916	}
		1917
		1918	void
		1919	_pool_2 (SV *cb)
		1920	CODE:
		1921	{
		1922	struct coro *coro = SvSTATE (coro_current);
		1923
		1924	sv_setsv (cb, &PL_sv_undef);
		1925
		1926	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1927	coro->saved_deffh = 0;
		1928
		1929	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1930	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1931	croak ("\3async_pool terminate\2\n");
		1932
		1933	av_clear (GvAV (PL_defgv));
		1934	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1935	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1936
		1937	coro->prio = 0;
		1938
		1939	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1940	api_trace (coro_current, 0);
		1941
		1942	av_push (av_async_pool, newSVsv (coro_current));
		1943	}
		1944
		1945
1169	MODULE = Coro::State PACKAGE = Coro::AIO	1946	MODULE = Coro::State PACKAGE = Coro::AIO
1170		1947
1171	SV *	1948	SV *
1172	_get_state ()	1949	_get_state ()
1173	CODE:	1950	CODE:
1174	{	1951	{
1175	struct {	1952	struct io_state *data;
1176	int errorno;
1177	int laststype;
1178	int laststatval;
1179	Stat_t statcache;
1180	} data;
1181		1953
		1954	RETVAL = newSV (sizeof (struct io_state));
		1955	data = (struct io_state *)SvPVX (RETVAL);
		1956	SvCUR_set (RETVAL, sizeof (struct io_state));
		1957	SvPOK_only (RETVAL);
		1958
1182	data.errorno = errno;	1959	data->errorno = errno;
1183	data.laststype = PL_laststype;	1960	data->laststype = PL_laststype;
1184	data.laststatval = PL_laststatval;	1961	data->laststatval = PL_laststatval;
1185	data.statcache = PL_statcache;	1962	data->statcache = PL_statcache;
1186
1187	RETVAL = newSVpvn ((char *)&data, sizeof data);
1188	}	1963	}
1189	OUTPUT:	1964	OUTPUT:
1190	RETVAL	1965	RETVAL
1191		1966
1192	void	1967	void
1193	_set_state (char *data_)	1968	_set_state (char *data_)
1194	PROTOTYPE: $	1969	PROTOTYPE: $
1195	CODE:	1970	CODE:
1196	{	1971	{
1197	struct {	1972	struct io_state data = (void )data_;
1198	int errorno;
1199	int laststype;
1200	int laststatval;
1201	Stat_t statcache;
1202	} data = (void )data_;
1203		1973
1204	errno = data->errorno;	1974	errno = data->errorno;
1205	PL_laststype = data->laststype;	1975	PL_laststype = data->laststype;
1206	PL_laststatval = data->laststatval;	1976	PL_laststatval = data->laststatval;
1207	PL_statcache = data->statcache;	1977	PL_statcache = data->statcache;
1208	}	1978	}
		1979

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Comparing Coro/Coro/State.xs (file contents): Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs. Revision 1.219 by root, Tue Dec 4 19:33:45 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs.
Revision 1.219 by root, Tue Dec 4 19:33:45 2007 UTC