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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.207 by root, Tue Oct 9 22:29:27 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
2		5
3	#include "EXTERN.h"	6	#include "EXTERN.h"
4	#include "perl.h"	7	#include "perl.h"
5	#include "XSUB.h"	8	#include "XSUB.h"
6		9
7	#include "patchlevel.h"	10	#include "patchlevel.h"
8		11
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	12	#include <stdio.h>
44	#include <errno.h>	13	#include <errno.h>
45		14	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		15
54	#ifdef HAVE_MMAP	16	#ifdef HAVE_MMAP
55	# include <unistd.h>	17	# include <unistd.h>
56	# include <sys/mman.h>	18	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	19	# ifndef MAP_ANONYMOUS
72	#else	34	#else
73	# define PAGESIZE 0	35	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	36	# define BOOT_PAGESIZE (void)0
75	#endif	37	#endif
76		38
77	/* The next macro should declare a variable stacklevel that contains and approximation	39	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	40	# include <valgrind/valgrind.h>
79	* and should be unique. */	41	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		42	#else
		43	# define REGISTER_STACK(cctx,start,end)
		44	#endif
		45
		46	/* the maximum number of idle cctx that will be pooled */
		47	#define MAX_IDLE_CCTX 8
		48
		49	#define PERL_VERSION_ATLEAST(a,b,c) \
		50	(PERL_REVISION > (a) \
		51	\|\| (PERL_REVISION == (a) \
		52	&& (PERL_VERSION > (b) \
		53	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		54
		55	#if !PERL_VERSION_ATLEAST (5,6,0)
		56	# ifndef PL_ppaddr
		57	# define PL_ppaddr ppaddr
		58	# endif
		59	# ifndef call_sv
		60	# define call_sv perl_call_sv
		61	# endif
		62	# ifndef get_sv
		63	# define get_sv perl_get_sv
		64	# endif
		65	# ifndef get_cv
		66	# define get_cv perl_get_cv
		67	# endif
		68	# ifndef IS_PADGV
		69	# define IS_PADGV(v) 0
		70	# endif
		71	# ifndef IS_PADCONST
		72	# define IS_PADCONST(v) 0
		73	# endif
		74	#endif
		75
		76	/* 5.8.7 */
		77	#ifndef SvRV_set
		78	# define SvRV_set(s,v) SvRV(s) = (v)
		79	#endif
		80
		81	/* 5.8.8 */
		82	#ifndef GV_NOTQUAL
		83	# define GV_NOTQUAL 0
		84	#endif
		85	#ifndef newSV
		86	# define newSV(l) NEWSV(0,l)
		87	#endif
		88
		89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		90	# undef CORO_STACKGUARD
		91	#endif
		92
		93	#ifndef CORO_STACKGUARD
		94	# define CORO_STACKGUARD 0
		95	#endif
		96
		97	/* prefer perl internal functions over our own? */
		98	#ifndef CORO_PREFER_PERL_FUNCTIONS
		99	# define CORO_PREFER_PERL_FUNCTIONS 0
		100	#endif
		101
		102	/* The next macros try to return the current stack pointer, in an as
		103	* portable way as possible. */
80	#define dSTACKLEVEL int stacklevel	104	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	105	#define STACKLEVEL ((void *)&stacklevel)
82		106
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		108
85	#if __GNUC__ >= 3	109	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	110	# define attribute(x) __attribute__(x)
		111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
87	#else	113	#else
88	# define attribute(x)	114	# define attribute(x)
		115	# define BARRIER
		116	# define expect(expr,value) (expr)
89	#endif	117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
90		121
91	#define NOINLINE attribute ((noinline))	122	#define NOINLINE attribute ((noinline))
92		123
93	#include "CoroAPI.h"	124	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		125
97	#ifdef USE_ITHREADS	126	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	127	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	128	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	129	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	130	#else
102	# define LOCK (void)0	131	# define LOCK (void)0
103	# define UNLOCK (void)0	132	# define UNLOCK (void)0
104	#endif	133	#endif
105		134
		135	#define strpair(const) const, sizeof (const) - 1
		136
		137	/* helper storage struct for Coro::AIO */
		138	struct io_state
		139	{
		140	int errorno;
		141	I32 laststype;
		142	int laststatval;
		143	Stat_t statcache;
		144	};
		145
		146	static size_t coro_stacksize = CORO_STACKSIZE;
106	static struct CoroAPI coroapi;	147	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	148	static AV main_mainstack; / used to differentiate between $main and others */
		149	static JMPENV *main_top_env;
108	static HV coro_state_stash, coro_stash;	150	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	151	static SV coro_mortal; / will be freed after next transfer */
110		152
		153	static GV irsgv; / $/ */
		154	static GV stdoutgv; / STDOUT /
		155
		156	static HV hv_sig; / %SIG */
		157	static SV *sv_diehook;
		158	static SV *sv_warnhook;
		159
		160	/* async_pool helper stuff */
		161	static SV *sv_pool_rss;
		162	static SV *sv_pool_size;
		163	static AV *av_async_pool;
		164
111	static struct coro_cctx *cctx_first;	165	static struct coro_cctx *cctx_first;
112	static int cctx_count, cctx_idle;	166	static int cctx_count, cctx_idle;
		167
		168	enum {
		169	CC_MAPPED = 0x01,
		170	CC_NOREUSE = 0x02, /* throw this away after tracing */
		171	CC_TRACE = 0x04,
		172	CC_TRACE_SUB = 0x08, /* trace sub calls */
		173	CC_TRACE_LINE = 0x10, /* trace each statement */
		174	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		175	};
113		176
114	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
115	typedef struct coro_cctx {	178	typedef struct coro_cctx {
116	struct coro_cctx *next;	179	struct coro_cctx *next;
117		180
118	/* the stack */	181	/* the stack */
119	void *sptr;	182	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	183	size_t ssize;
121		184
122	/* cpu state */	185	/* cpu state */
123	void idle_sp; / sp of top-level transfer/schedule/cede call */	186	void idle_sp; / sp of top-level transfer/schedule/cede call */
		187	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
124	JMPENV *top_env;	188	JMPENV *top_env;
125	coro_context cctx;	189	coro_context cctx;
126		190
127	int inuse;
128
129	#if USE_VALGRIND	191	#if CORO_USE_VALGRIND
130	int valgrind_id;	192	int valgrind_id;
131	#endif	193	#endif
		194	unsigned char flags;
132	} coro_cctx;	195	} coro_cctx;
133		196
134	enum {	197	enum {
135	CF_RUNNING = 0x0001, /* coroutine is running */	198	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY = 0x0002, /* coroutine is ready */	199	CF_READY = 0x0002, /* coroutine is ready */
137	CF_NEW = 0x0004, /* ahs never been switched to */	200	CF_NEW = 0x0004, /* has never been switched to */
		201	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
138	};	202	};
		203
		204	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		205	typedef struct {
		206	SV *defsv;
		207	AV *defav;
		208	SV *errsv;
		209	SV *irsgv;
		210	#define VAR(name,type) type name;
		211	# include "state.h"
		212	#undef VAR
		213	} perl_slots;
		214
		215	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
139		216
140	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
141	struct coro {	218	struct coro {
142	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
143	coro_cctx *cctx;	220	coro_cctx *cctx;
144		221
		222	/* process data */
		223	AV *mainstack;
		224	perl_slots slot; / basically the saved sp */
		225
145	/* data associated with this coroutine (initial args) */	226	AV args; / data associated with this coroutine (initial args) */
146	AV *args;	227	int refcnt; /* coroutines are refcounted, yes */
147	int refcnt;	228	int flags; /* CF_ flags */
148	int flags;	229	HV hv; / the perl hash associated with this coro, if any */
149		230
150	/* optionally saved, might be zero */	231	/* statistics */
151	AV *defav;	232	int usecount; /* number of transfers to this coro */
152	SV *defsv;
153	SV *errsv;
154
155	#define VAR(name,type) type name;
156	# include "state.h"
157	#undef VAR
158		233
159	/* coro process data */	234	/* coro process data */
160	int prio;	235	int prio;
		236	SV throw; / exception to be thrown */
		237
		238	/* async_pool */
		239	SV *saved_deffh;
		240
		241	/* linked list */
		242	struct coro next, prev;
161	};	243	};
162		244
163	typedef struct coro *Coro__State;	245	typedef struct coro *Coro__State;
164	typedef struct coro *Coro__State_or_hashref;	246	typedef struct coro *Coro__State_or_hashref;
165		247
		248	/ Coro ******************************************************************/
		249
		250	#define PRIO_MAX 3
		251	#define PRIO_HIGH 1
		252	#define PRIO_NORMAL 0
		253	#define PRIO_LOW -1
		254	#define PRIO_IDLE -3
		255	#define PRIO_MIN -4
		256
		257	/* for Coro.pm */
		258	static SV *coro_current;
		259	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		260	static int coro_nready;
		261	static struct coro *coro_first;
		262
		263	/ lowlevel stuff ********************************************************/
		264
		265	static SV *
		266	coro_get_sv (const char *name, int create)
		267	{
		268	#if PERL_VERSION_ATLEAST (5,9,0)
		269	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		270	get_sv (name, create);
		271	#endif
		272	return get_sv (name, create);
		273	}
		274
166	static AV *	275	static AV *
		276	coro_get_av (const char *name, int create)
		277	{
		278	#if PERL_VERSION_ATLEAST (5,9,0)
		279	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		280	get_av (name, create);
		281	#endif
		282	return get_av (name, create);
		283	}
		284
		285	static HV *
		286	coro_get_hv (const char *name, int create)
		287	{
		288	#if PERL_VERSION_ATLEAST (5,9,0)
		289	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		290	get_hv (name, create);
		291	#endif
		292	return get_hv (name, create);
		293	}
		294
		295	static AV *
167	coro_clone_padlist (CV *cv)	296	coro_clone_padlist (pTHX_ CV *cv)
168	{	297	{
169	AV *padlist = CvPADLIST (cv);	298	AV *padlist = CvPADLIST (cv);
170	AV newpadlist, newpad;	299	AV newpadlist, newpad;
171		300
172	newpadlist = newAV ();	301	newpadlist = newAV ();
…		…
184		313
185	return newpadlist;	314	return newpadlist;
186	}	315	}
187		316
188	static void	317	static void
189	free_padlist (AV *padlist)	318	free_padlist (pTHX_ AV *padlist)
190	{	319	{
191	/* may be during global destruction */	320	/* may be during global destruction */
192	if (SvREFCNT (padlist))	321	if (SvREFCNT (padlist))
193	{	322	{
194	I32 i = AvFILLp (padlist);	323	I32 i = AvFILLp (padlist);
…		…
215	AV *padlist;	344	AV *padlist;
216	AV av = (AV )mg->mg_obj;	345	AV av = (AV )mg->mg_obj;
217		346
218	/* casting is fun. */	347	/* casting is fun. */
219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	348	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
220	free_padlist (padlist);	349	free_padlist (aTHX_ padlist);
221		350
222	SvREFCNT_dec (av);	351	SvREFCNT_dec (av);
223		352
224	return 0;	353	return 0;
225	}	354	}
…		…
233	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
234	? SvMAGIC (cv) \	363	? SvMAGIC (cv) \
235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
236	: 0	365	: 0
237		366
		367	static struct coro *
		368	SvSTATE_ (pTHX_ SV *coro)
		369	{
		370	HV *stash;
		371	MAGIC *mg;
		372
		373	if (SvROK (coro))
		374	coro = SvRV (coro);
		375
		376	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		377	croak ("Coro::State object required");
		378
		379	stash = SvSTASH (coro);
		380	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		381	{
		382	/* very slow, but rare, check */
		383	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		384	croak ("Coro::State object required");
		385	}
		386
		387	mg = CORO_MAGIC (coro);
		388	return (struct coro *)mg->mg_ptr;
		389	}
		390
		391	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		392
238	/* the next two functions merely cache the padlists */	393	/* the next two functions merely cache the padlists */
239	static void	394	static void
240	get_padlist (CV *cv)	395	get_padlist (pTHX_ CV *cv)
241	{	396	{
242	MAGIC *mg = CORO_MAGIC (cv);	397	MAGIC *mg = CORO_MAGIC (cv);
243	AV *av;	398	AV *av;
244		399
245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	400	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	401	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247	else	402	else
248	{	403	{
249	#if 0	404	#if CORO_PREFER_PERL_FUNCTIONS
250	/* this is probably cleaner, but also slower? */	405	/* this is probably cleaner, but also slower? */
251	CV *cp = Perl_cv_clone (cv);	406	CV *cp = Perl_cv_clone (cv);
252	CvPADLIST (cv) = CvPADLIST (cp);	407	CvPADLIST (cv) = CvPADLIST (cp);
253	CvPADLIST (cp) = 0;	408	CvPADLIST (cp) = 0;
254	SvREFCNT_dec (cp);	409	SvREFCNT_dec (cp);
255	#else	410	#else
256	CvPADLIST (cv) = coro_clone_padlist (cv);	411	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
257	#endif	412	#endif
258	}	413	}
259	}	414	}
260		415
261	static void	416	static void
262	put_padlist (CV *cv)	417	put_padlist (pTHX_ CV *cv)
263	{	418	{
264	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC (cv);
265	AV *av;	420	AV *av;
266		421
267	if (!mg)	422	if (expect_false (!mg))
268	{	423	{
269	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	424	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
270	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	425	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
271	mg->mg_virtual = &vtbl_coro;	426	mg->mg_virtual = &vtbl_coro;
272	mg->mg_obj = (SV *)newAV ();	427	mg->mg_obj = (SV *)newAV ();
273	}	428	}
274		429
275	av = (AV *)mg->mg_obj;	430	av = (AV *)mg->mg_obj;
276		431
277	if (AvFILLp (av) >= AvMAX (av))	432	if (expect_false (AvFILLp (av) >= AvMAX (av)))
278	av_extend (av, AvMAX (av) + 1);	433	av_extend (av, AvMAX (av) + 1);
279		434
280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	435	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
281	}	436	}
282		437
283	#define SB do {	438	/ load & save, init *****************************************************/
284	#define SE } while (0)
285		439
286	#define LOAD(state) load_state ((state))
287	#define SAVE(state,flags) save_state ((state),(flags))
288
289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
290
291	static void	440	static void
292	load_state (Coro__State c)	441	load_perl (pTHX_ Coro__State c)
293	{	442	{
		443	perl_slots *slot = c->slot;
		444	c->slot = 0;
		445
		446	PL_mainstack = c->mainstack;
		447
		448	GvSV (PL_defgv) = slot->defsv;
		449	GvAV (PL_defgv) = slot->defav;
		450	GvSV (PL_errgv) = slot->errsv;
		451	GvSV (irsgv) = slot->irsgv;
		452
294	#define VAR(name,type) PL_ ## name = c->name;	453	#define VAR(name,type) PL_ ## name = slot->name;
295	# include "state.h"	454	# include "state.h"
296	#undef VAR	455	#undef VAR
297		456
298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	457	/hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);/
299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	458	/hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);/
300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
301		459
302	{	460	{
303	dSP;	461	dSP;
		462
304	CV *cv;	463	CV *cv;
305		464
306	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
307	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
308	{	467	{
309	put_padlist (cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
310	CvDEPTH (cv) = PTR2IV (POPs);	469	CvDEPTH (cv) = PTR2IV (POPs);
311	CvPADLIST (cv) = (AV *)POPs;	470	CvPADLIST (cv) = (AV *)POPs;
312	}	471	}
313		472
314	PUTBACK;	473	PUTBACK;
315	}	474	}
316	}	475	}
317		476
318	static void	477	static void
319	save_state (Coro__State c, int flags)	478	save_perl (pTHX_ Coro__State c)
320	{	479	{
321	{	480	{
322	dSP;	481	dSP;
323	I32 cxix = cxstack_ix;	482	I32 cxix = cxstack_ix;
324	PERL_CONTEXT *ccstk = cxstack;	483	PERL_CONTEXT *ccstk = cxstack;
…		…
327	/*	486	/*
328	* the worst thing you can imagine happens first - we have to save	487	* the worst thing you can imagine happens first - we have to save
329	* (and reinitialize) all cv's in the whole callchain :(	488	* (and reinitialize) all cv's in the whole callchain :(
330	*/	489	*/
331		490
332	PUSHs (Nullsv);	491	XPUSHs (Nullsv);
333	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
334	for (;;)	493	for (;;)
335	{	494	{
336	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
337	{	496	{
338	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
339		498
340	if (CxTYPE (cx) == CXt_SUB)	499	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
341	{	500	{
342	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
343		502
344	if (CvDEPTH (cv))	503	if (expect_true (CvDEPTH (cv)))
345	{	504	{
346	EXTEND (SP, 3);	505	EXTEND (SP, 3);
347
348	PUSHs ((SV *)CvPADLIST (cv));	506	PUSHs ((SV *)CvPADLIST (cv));
349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
350	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
351		509
352	CvDEPTH (cv) = 0;	510	CvDEPTH (cv) = 0;
353	get_padlist (cv);	511	get_padlist (aTHX_ cv);
354	}	512	}
355	}	513	}
356	#ifdef CXt_FORMAT
357	else if (CxTYPE (cx) == CXt_FORMAT)
358	{
359	/* I never used formats, so how should I know how these are implemented? */
360	/* my bold guess is as a simple, plain sub... */
361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
362	}
363	#endif
364	}	514	}
365		515
366	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
367	break;	517	break;
368		518
369	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
370	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
371	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
372	}	522	}
373		523
374	PUTBACK;	524	PUTBACK;
375	}	525	}
376		526
377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	527	/* allocate some space on the context stack for our purposes */
378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	528	/* we manually unroll here, as usually 2 slots is enough */
379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
		530	if (SLOT_COUNT >= 2) CXINC;
		531	if (SLOT_COUNT >= 3) CXINC;
		532	{
		533	int i;
		534	for (i = 3; i < SLOT_COUNT; ++i)
		535	CXINC;
		536	}
		537	cxstack_ix -= SLOT_COUNT; /* undo allocation */
380		538
		539	c->mainstack = PL_mainstack;
		540
		541	{
		542	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		543
		544	slot->defav = GvAV (PL_defgv);
		545	slot->defsv = DEFSV;
		546	slot->errsv = ERRSV;
		547	slot->irsgv = GvSV (irsgv);
		548
381	#define VAR(name,type)c->name = PL_ ## name;	549	#define VAR(name,type) slot->name = PL_ ## name;
382	# include "state.h"	550	# include "state.h"
383	#undef VAR	551	#undef VAR
		552	}
384	}	553	}
385		554
386	/*	555	/*
387	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
388	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
389	* on the (sometimes correct) assumption that coroutines do	558	* on the (sometimes correct) assumption that coroutines do
390	* not usually need a lot of stackspace.	559	* not usually need a lot of stackspace.
391	*/	560	*/
		561	#if CORO_PREFER_PERL_FUNCTIONS
		562	# define coro_init_stacks init_stacks
		563	#else
392	static void	564	static void
393	coro_init_stacks ()	565	coro_init_stacks (pTHX)
394	{	566	{
395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	567	PL_curstackinfo = new_stackinfo(32, 8);
396	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
397	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
399		571
400	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
401	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
403		575
404	New(50,PL_tmps_stack,128,SV*);	576	New(50,PL_tmps_stack,32,SV*);
405	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
406	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
407	PL_tmps_max = 128;	579	PL_tmps_max = 32;
408		580
409	New(54,PL_markstack,32,I32);	581	New(54,PL_markstack,16,I32);
410	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
411	PL_markstack_max = PL_markstack + 32;	583	PL_markstack_max = PL_markstack + 16;
412		584
413	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
414	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
415	#endif	587	#endif
416		588
417	New(54,PL_scopestack,32,I32);	589	New(54,PL_scopestack,8,I32);
418	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
419	PL_scopestack_max = 32;	591	PL_scopestack_max = 8;
420		592
421	New(54,PL_savestack,64,ANY);	593	New(54,PL_savestack,24,ANY);
422	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
423	PL_savestack_max = 64;	595	PL_savestack_max = 24;
424		596
425	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,9,0)
426	New(54,PL_retstack,16,OP*);	598	New(54,PL_retstack,4,OP*);
427	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
428	PL_retstack_max = 16;	600	PL_retstack_max = 4;
429	#endif	601	#endif
430	}	602	}
		603	#endif
431		604
432	/*	605	/*
433	* destroy the stacks, the callchain etc...	606	* destroy the stacks, the callchain etc...
434	*/	607	*/
435	static void	608	static void
436	coro_destroy_stacks ()	609	coro_destroy_stacks (pTHX)
437	{	610	{
438	if (!IN_DESTRUCT)
439	{
440	/* is this ugly, I ask? */
441	LEAVE_SCOPE (0);
442
443	/* sure it is, but more important: is it correct?? :/ */
444	FREETMPS;
445
446	/POPSTACK_TO (PL_mainstack);//D//use/
447	}
448
449	while (PL_curstackinfo->si_next)	611	while (PL_curstackinfo->si_next)
450	PL_curstackinfo = PL_curstackinfo->si_next;	612	PL_curstackinfo = PL_curstackinfo->si_next;
451		613
452	while (PL_curstackinfo)	614	while (PL_curstackinfo)
453	{	615	{
454	PERL_SI *p = PL_curstackinfo->si_prev;	616	PERL_SI *p = PL_curstackinfo->si_prev;
455		617
456	{ /D//remove/
457	dSP;
458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459	PUTBACK; /* possibly superfluous */
460	}
461
462	if (!IN_DESTRUCT)	618	if (!IN_DESTRUCT)
463	{
464	dounwind (-1);/D//remove/
465	SvREFCNT_dec (PL_curstackinfo->si_stack);	619	SvREFCNT_dec (PL_curstackinfo->si_stack);
466	}
467		620
468	Safefree (PL_curstackinfo->si_cxstack);	621	Safefree (PL_curstackinfo->si_cxstack);
469	Safefree (PL_curstackinfo);	622	Safefree (PL_curstackinfo);
470	PL_curstackinfo = p;	623	PL_curstackinfo = p;
471	}	624	}
…		…
477	#if !PERL_VERSION_ATLEAST (5,9,0)	630	#if !PERL_VERSION_ATLEAST (5,9,0)
478	Safefree (PL_retstack);	631	Safefree (PL_retstack);
479	#endif	632	#endif
480	}	633	}
481		634
482	static void	635	static size_t
483	setup_coro (struct coro *coro)	636	coro_rss (pTHX_ struct coro *coro)
		637	{
		638	size_t rss = sizeof (*coro);
		639
		640	if (coro->mainstack)
		641	{
		642	perl_slots tmp_slot;
		643	perl_slots *slot;
		644
		645	if (coro->flags & CF_RUNNING)
		646	{
		647	slot = &tmp_slot;
		648
		649	#define VAR(name,type) slot->name = PL_ ## name;
		650	# include "state.h"
		651	#undef VAR
		652	}
		653	else
		654	slot = coro->slot;
		655
		656	rss += sizeof (slot->curstackinfo);
		657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		659	rss += slot->tmps_max * sizeof (SV *);
		660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		661	rss += slot->scopestack_max * sizeof (I32);
		662	rss += slot->savestack_max * sizeof (ANY);
		663
		664	#if !PERL_VERSION_ATLEAST (5,9,0)
		665	rss += slot->retstack_max * sizeof (OP *);
		666	#endif
		667	}
		668
		669	return rss;
		670	}
		671
		672	/ coroutine stack handling **********************************************/
		673
		674	static void
		675	coro_setup (pTHX_ struct coro *coro)
484	{	676	{
485	/*	677	/*
486	* emulate part of the perl startup here.	678	* emulate part of the perl startup here.
487	*/	679	*/
488
489	coro_init_stacks ();	680	coro_init_stacks (aTHX);
490		681
		682	PL_runops = RUNOPS_DEFAULT;
491	PL_curcop = &PL_compiling;	683	PL_curcop = &PL_compiling;
492	PL_in_eval = EVAL_NULL;	684	PL_in_eval = EVAL_NULL;
		685	PL_comppad = 0;
493	PL_curpm = 0;	686	PL_curpm = 0;
		687	PL_curpad = 0;
494	PL_localizing = 0;	688	PL_localizing = 0;
495	PL_dirty = 0;	689	PL_dirty = 0;
496	PL_restartop = 0;	690	PL_restartop = 0;
		691	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		692	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		693
		694	GvSV (PL_defgv) = newSV (0);
		695	GvAV (PL_defgv) = coro->args; coro->args = 0;
		696	GvSV (PL_errgv) = newSV (0);
		697	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		698	PL_rs = newSVsv (GvSV (irsgv));
		699	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
497		700
498	{	701	{
499	dSP;	702	dSP;
500	LOGOP myop;	703	LOGOP myop;
501		704
502	/* I have no idea why this is needed, but it is */
503	PUSHMARK (SP);
504
505	SvREFCNT_dec (GvAV (PL_defgv));
506	GvAV (PL_defgv) = coro->args; coro->args = 0;
507
508	Zero (&myop, 1, LOGOP);	705	Zero (&myop, 1, LOGOP);
509	myop.op_next = Nullop;	706	myop.op_next = Nullop;
510	myop.op_flags = OPf_WANT_VOID;	707	myop.op_flags = OPf_WANT_VOID;
511		708
		709	PUSHMARK (SP);
		710	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		711	PUTBACK;
512	PL_op = (OP *)&myop;	712	PL_op = (OP *)&myop;
513
514	PUSHMARK (SP);
515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516	PUTBACK;
517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	713	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518	SPAGAIN;	714	SPAGAIN;
519	}	715	}
520		716
521	ENTER; /* necessary e.g. for dounwind */	717	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
522	}	718	}
523		719
524	static void	720	static void
		721	coro_destroy (pTHX_ struct coro *coro)
		722	{
		723	if (!IN_DESTRUCT)
		724	{
		725	/* restore all saved variables and stuff */
		726	LEAVE_SCOPE (0);
		727	assert (PL_tmps_floor == -1);
		728
		729	/* free all temporaries */
		730	FREETMPS;
		731	assert (PL_tmps_ix == -1);
		732
		733	/* unwind all extra stacks */
		734	POPSTACK_TO (PL_mainstack);
		735
		736	/* unwind main stack */
		737	dounwind (-1);
		738	}
		739
		740	SvREFCNT_dec (GvSV (PL_defgv));
		741	SvREFCNT_dec (GvAV (PL_defgv));
		742	SvREFCNT_dec (GvSV (PL_errgv));
		743	SvREFCNT_dec (PL_defoutgv);
		744	SvREFCNT_dec (PL_rs);
		745	SvREFCNT_dec (GvSV (irsgv));
		746
		747	SvREFCNT_dec (PL_diehook);
		748	SvREFCNT_dec (PL_warnhook);
		749
		750	SvREFCNT_dec (coro->saved_deffh);
		751	SvREFCNT_dec (coro->throw);
		752
		753	coro_destroy_stacks (aTHX);
		754	}
		755
		756	static void
525	free_coro_mortal ()	757	free_coro_mortal (pTHX)
526	{	758	{
527	if (coro_mortal)	759	if (expect_true (coro_mortal))
528	{	760	{
529	SvREFCNT_dec (coro_mortal);	761	SvREFCNT_dec (coro_mortal);
530	coro_mortal = 0;	762	coro_mortal = 0;
531	}	763	}
532	}	764	}
533		765
		766	static int
		767	runops_trace (pTHX)
		768	{
		769	COP *oldcop = 0;
		770	int oldcxix = -2;
		771	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		772	coro_cctx *cctx = coro->cctx;
		773
		774	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		775	{
		776	PERL_ASYNC_CHECK ();
		777
		778	if (cctx->flags & CC_TRACE_ALL)
		779	{
		780	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		781	{
		782	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		783	SV bot, top;
		784	AV av = newAV (); / return values */
		785	SV **cb;
		786	dSP;
		787
		788	GV *gv = CvGV (cx->blk_sub.cv);
		789	SV *fullname = sv_2mortal (newSV (0));
		790	if (isGV (gv))
		791	gv_efullname3 (fullname, gv, 0);
		792
		793	bot = PL_stack_base + cx->blk_oldsp + 1;
		794	top = cx->blk_gimme == G_ARRAY ? SP + 1
		795	: cx->blk_gimme == G_SCALAR ? bot + 1
		796	: bot;
		797
		798	av_extend (av, top - bot);
		799	while (bot < top)
		800	av_push (av, SvREFCNT_inc (*bot++));
		801
		802	PL_runops = RUNOPS_DEFAULT;
		803	ENTER;
		804	SAVETMPS;
		805	EXTEND (SP, 3);
		806	PUSHMARK (SP);
		807	PUSHs (&PL_sv_no);
		808	PUSHs (fullname);
		809	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		810	PUTBACK;
		811	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		812	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		813	SPAGAIN;
		814	FREETMPS;
		815	LEAVE;
		816	PL_runops = runops_trace;
		817	}
		818
		819	if (oldcop != PL_curcop)
		820	{
		821	oldcop = PL_curcop;
		822
		823	if (PL_curcop != &PL_compiling)
		824	{
		825	SV **cb;
		826
		827	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		828	{
		829	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		830
		831	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		832	{
		833	runops_proc_t old_runops = PL_runops;
		834	dSP;
		835	GV *gv = CvGV (cx->blk_sub.cv);
		836	SV *fullname = sv_2mortal (newSV (0));
		837
		838	if (isGV (gv))
		839	gv_efullname3 (fullname, gv, 0);
		840
		841	PL_runops = RUNOPS_DEFAULT;
		842	ENTER;
		843	SAVETMPS;
		844	EXTEND (SP, 3);
		845	PUSHMARK (SP);
		846	PUSHs (&PL_sv_yes);
		847	PUSHs (fullname);
		848	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		849	PUTBACK;
		850	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		851	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		852	SPAGAIN;
		853	FREETMPS;
		854	LEAVE;
		855	PL_runops = runops_trace;
		856	}
		857
		858	oldcxix = cxstack_ix;
		859	}
		860
		861	if (cctx->flags & CC_TRACE_LINE)
		862	{
		863	dSP;
		864
		865	PL_runops = RUNOPS_DEFAULT;
		866	ENTER;
		867	SAVETMPS;
		868	EXTEND (SP, 3);
		869	PL_runops = RUNOPS_DEFAULT;
		870	PUSHMARK (SP);
		871	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		872	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		873	PUTBACK;
		874	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		875	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		876	SPAGAIN;
		877	FREETMPS;
		878	LEAVE;
		879	PL_runops = runops_trace;
		880	}
		881	}
		882	}
		883	}
		884	}
		885
		886	TAINT_NOT;
		887	return 0;
		888	}
		889
		890	/* inject a fake call to Coro::State::_cctx_init into the execution */
		891	/* _cctx_init should be careful, as it could be called at almost any time */
		892	/* during execution of a perl program */
534	static void NOINLINE	893	static void NOINLINE
535	prepare_cctx (coro_cctx *cctx)	894	cctx_prepare (pTHX_ coro_cctx *cctx)
536	{	895	{
537	dSP;	896	dSP;
538	LOGOP myop;	897	LOGOP myop;
539		898
		899	PL_top_env = &PL_start_env;
		900
		901	if (cctx->flags & CC_TRACE)
		902	PL_runops = runops_trace;
		903
540	Zero (&myop, 1, LOGOP);	904	Zero (&myop, 1, LOGOP);
541	myop.op_next = PL_op;	905	myop.op_next = PL_op;
542	myop.op_flags = OPf_WANT_VOID;	906	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
543
544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545		907
546	PUSHMARK (SP);	908	PUSHMARK (SP);
		909	EXTEND (SP, 2);
		910	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	911	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548	PUTBACK;	912	PUTBACK;
		913	PL_op = (OP *)&myop;
549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	914	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550	SPAGAIN;	915	SPAGAIN;
551	}	916	}
552		917
		918	/*
		919	* this is a _very_ stripped down perl interpreter ;)
		920	*/
553	static void	921	static void
554	coro_run (void *arg)	922	cctx_run (void *arg)
555	{	923	{
		924	dTHX;
		925
556	/* coro_run is the alternative epilogue of transfer() */	926	/* cctx_run is the alternative tail of transfer(), so unlock here. */
557	UNLOCK;	927	UNLOCK;
558		928
		929	/* we now skip the entersub that lead to transfer() */
		930	PL_op = PL_op->op_next;
		931
		932	/* inject a fake subroutine call to cctx_init */
		933	cctx_prepare (aTHX_ (coro_cctx *)arg);
		934
		935	/* somebody or something will hit me for both perl_run and PL_restartop */
		936	PL_restartop = PL_op;
		937	perl_run (PL_curinterp);
		938
559	/*	939	/*
560	* this is a _very_ stripped down perl interpreter ;)	940	* If perl-run returns we assume exit() was being called or the coro
		941	* fell off the end, which seems to be the only valid (non-bug)
		942	* reason for perl_run to return. We try to exit by jumping to the
		943	* bootstrap-time "top" top_env, as we cannot restore the "main"
		944	* coroutine as Coro has no such concept
561	*/	945	*/
562	PL_top_env = &PL_start_env;	946	PL_top_env = main_top_env;
563		947	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
564	/* inject call to cctx_init */
565	prepare_cctx ((coro_cctx *)arg);
566
567	/* somebody will hit me for both perl_run and PL_restartop */
568	perl_run (PL_curinterp);
569
570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571	abort ();
572	}	948	}
573		949
574	static coro_cctx *	950	static coro_cctx *
575	cctx_new ()	951	cctx_new ()
576	{	952	{
577	coro_cctx *cctx;	953	coro_cctx *cctx;
		954	void *stack_start;
		955	size_t stack_size;
578		956
579	++cctx_count;	957	++cctx_count;
580		958
581	New (0, cctx, 1, coro_cctx);	959	Newz (0, cctx, 1, coro_cctx);
582		960
583	#if HAVE_MMAP	961	#if HAVE_MMAP
584
585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	962	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
586	/* mmap suppsedly does allocate-on-write for us */	963	/* mmap supposedly does allocate-on-write for us */
587	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	964	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588		965
589	if (cctx->sptr == (void *)-1)	966	if (cctx->sptr != (void *)-1)
590	{
591	perror ("FATAL: unable to mmap stack for coroutine");
592	_exit (EXIT_FAILURE);
593	}	967	{
594
595	# if STACKGUARD	968	# if CORO_STACKGUARD
596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	969	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
597	# endif	970	# endif
		971	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		972	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		973	cctx->flags \|= CC_MAPPED;
		974	}
		975	else
		976	#endif
		977	{
		978	cctx->ssize = coro_stacksize * (long)sizeof (long);
		979	New (0, cctx->sptr, coro_stacksize, long);
598		980
599	#else
600
601	cctx->ssize = STACKSIZE * (long)sizeof (long);
602	New (0, cctx->sptr, STACKSIZE, long);
603
604	if (!cctx->sptr)	981	if (!cctx->sptr)
605	{	982	{
606	perror ("FATAL: unable to malloc stack for coroutine");	983	perror ("FATAL: unable to allocate stack for coroutine");
607	_exit (EXIT_FAILURE);	984	_exit (EXIT_FAILURE);
608	}	985	}
609		986
610	#endif	987	stack_start = cctx->sptr;
		988	stack_size = cctx->ssize;
		989	}
611		990
612	#if USE_VALGRIND	991	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
613	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	992	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
614	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
615	cctx->ssize + (char *)cctx->sptr
616	);
617	#endif
618
619	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
620		993
621	return cctx;	994	return cctx;
622	}	995	}
623		996
624	static void	997	static void
…		…
627	if (!cctx)	1000	if (!cctx)
628	return;	1001	return;
629		1002
630	--cctx_count;	1003	--cctx_count;
631		1004
632	#if USE_VALGRIND	1005	#if CORO_USE_VALGRIND
633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1006	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
634	#endif	1007	#endif
635		1008
636	#if HAVE_MMAP	1009	#if HAVE_MMAP
		1010	if (cctx->flags & CC_MAPPED)
637	munmap (cctx->sptr, cctx->ssize);	1011	munmap (cctx->sptr, cctx->ssize);
638	#else	1012	else
		1013	#endif
639	Safefree (cctx->sptr);	1014	Safefree (cctx->sptr);
640	#endif
641		1015
642	Safefree (cctx);	1016	Safefree (cctx);
643	}	1017	}
644		1018
		1019	/* wether this cctx should be destructed */
		1020	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1021
645	static coro_cctx *	1022	static coro_cctx *
646	cctx_get ()	1023	cctx_get (pTHX)
647	{	1024	{
648	coro_cctx *cctx;	1025	while (expect_true (cctx_first))
649
650	if (cctx_first)
651	{	1026	{
652	cctx = cctx_first;	1027	coro_cctx *cctx = cctx_first;
653	cctx_first = cctx->next;	1028	cctx_first = cctx->next;
654	--cctx_idle;	1029	--cctx_idle;
655	}	1030
656	else	1031	if (expect_true (!CCTX_EXPIRED (cctx)))
657	{	1032	return cctx;
658	cctx = cctx_new ();	1033
659	PL_op = PL_op->op_next;	1034	cctx_destroy (cctx);
660	}	1035	}
661		1036
662	return cctx;	1037	return cctx_new ();
663	}	1038	}
664		1039
665	static void	1040	static void
666	cctx_put (coro_cctx *cctx)	1041	cctx_put (coro_cctx *cctx)
667	{	1042	{
668	/* free another cctx if overlimit */	1043	/* free another cctx if overlimit */
669	if (cctx_idle >= MAX_IDLE_CCTX)	1044	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
670	{	1045	{
671	coro_cctx *first = cctx_first;	1046	coro_cctx *first = cctx_first;
672	cctx_first = first->next;	1047	cctx_first = first->next;
673	--cctx_idle;	1048	--cctx_idle;
674		1049
675	assert (!first->inuse);
676	cctx_destroy (first);	1050	cctx_destroy (first);
677	}	1051	}
678		1052
679	++cctx_idle;	1053	++cctx_idle;
680	cctx->next = cctx_first;	1054	cctx->next = cctx_first;
681	cctx_first = cctx;	1055	cctx_first = cctx;
682	}	1056	}
683		1057
684	/* never call directly, always through the coro_state_transfer global variable */	1058	/ coroutine switching ***************************************************/
		1059
		1060	static void
		1061	transfer_check (pTHX_ struct coro prev, struct coro next)
		1062	{
		1063	if (expect_true (prev != next))
		1064	{
		1065	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1066	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1067
		1068	if (expect_false (next->flags & CF_RUNNING))
		1069	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1070
		1071	if (expect_false (next->flags & CF_DESTROYED))
		1072	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1073
		1074	if (
		1075	#if PERL_VERSION_ATLEAST (5,9,0)
		1076	expect_false (PL_parser)
		1077	#else
		1078	expect_false (PL_lex_state != LEX_NOTPARSING)
		1079	#endif
		1080	)
		1081	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1082	}
		1083	}
		1084
		1085	/* always use the TRANSFER macro */
685	static void NOINLINE	1086	static void NOINLINE
686	transfer (struct coro prev, struct coro next, int flags)	1087	transfer (pTHX_ struct coro prev, struct coro next)
687	{	1088	{
688	dSTACKLEVEL;	1089	dSTACKLEVEL;
689		1090
690	/* sometimes transfer is only called to set idle_sp */	1091	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	1092	if (expect_false (!next))
		1093	{
692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1094	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1095	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1096	}
693	else if (prev != next)	1097	else if (expect_true (prev != next))
694	{	1098	{
695	coro_cctx *prev__cctx;	1099	coro_cctx *prev__cctx;
696		1100
697	if (prev->flags & CF_NEW)	1101	if (expect_false (prev->flags & CF_NEW))
698	{	1102	{
699	/* create a new empty context */	1103	/* create a new empty context */
700	Newz (0, prev->cctx, 1, coro_cctx);	1104	Newz (0, prev->cctx, 1, coro_cctx);
701	prev->cctx->inuse = 1;
702	prev->flags &= ~CF_NEW;	1105	prev->flags &= ~CF_NEW;
703	prev->flags \|= CF_RUNNING;	1106	prev->flags \|= CF_RUNNING;
704	}	1107	}
705		1108
706	/TODO: must not croak here /
707	if (!prev->flags & CF_RUNNING)
708	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
709
710	if (next->flags & CF_RUNNING)
711	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
712
713	prev->flags &= ~CF_RUNNING;	1109	prev->flags &= ~CF_RUNNING;
714	next->flags \|= CF_RUNNING;	1110	next->flags \|= CF_RUNNING;
715		1111
716	LOCK;	1112	LOCK;
717		1113
718	if (next->flags & CF_NEW)	1114	if (expect_false (next->flags & CF_NEW))
719	{	1115	{
720	/* need to start coroutine */	1116	/* need to start coroutine */
721	next->flags &= ~CF_NEW;	1117	next->flags &= ~CF_NEW;
722	/* first get rid of the old state */	1118	/* first get rid of the old state */
723	SAVE (prev, -1);	1119	save_perl (aTHX_ prev);
724	/* setup coroutine call */	1120	/* setup coroutine call */
725	setup_coro (next);	1121	coro_setup (aTHX_ next);
726	/* need a new stack */
727	assert (!next->stack);
728	}	1122	}
729	else	1123	else
730	{	1124	{
731	/* coroutine already started */	1125	/* coroutine already started */
732	SAVE (prev, flags);	1126	save_perl (aTHX_ prev);
733	LOAD (next);	1127	load_perl (aTHX_ next);
734	}	1128	}
735		1129
736	prev__cctx = prev->cctx;	1130	prev__cctx = prev->cctx;
737		1131
738	/* possibly "free" the cctx */	1132	/* possibly "free" the cctx */
739	if (prev__cctx->idle_sp == STACKLEVEL)	1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
740	{	1134	{
741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1135	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
742	assert (PL_top_env == prev__cctx->top_env);	1136	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
743		1137
744	prev->cctx = 0;	1138	prev->cctx = 0;
745		1139
		1140	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1141	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1142	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1143	if (!next->cctx)
		1144	next->cctx = cctx_get (aTHX);
		1145
746	cctx_put (prev__cctx);	1146	cctx_put (prev__cctx);
747	prev__cctx->inuse = 0;
748	}	1147	}
749		1148
		1149	++next->usecount;
		1150
750	if (!next->cctx)	1151	if (expect_true (!next->cctx))
751	{
752	next->cctx = cctx_get ();	1152	next->cctx = cctx_get (aTHX);
753	assert (!next->cctx->inuse);
754	next->cctx->inuse = 1;
755	}
756		1153
757	if (prev__cctx != next->cctx)	1154	if (expect_false (prev__cctx != next->cctx))
758	{	1155	{
759	prev__cctx->top_env = PL_top_env;	1156	prev__cctx->top_env = PL_top_env;
760	PL_top_env = next->cctx->top_env;	1157	PL_top_env = next->cctx->top_env;
761	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1158	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
762	}	1159	}
763		1160
764	free_coro_mortal ();	1161	free_coro_mortal (aTHX);
765
766	UNLOCK;	1162	UNLOCK;
		1163
		1164	if (expect_false (prev->throw \|\| next->throw))
		1165	{
		1166	struct coro *coro = SvSTATE (coro_current);
		1167
		1168	if (coro->throw)
		1169	{
		1170	SV *exception = coro->throw;
		1171	coro->throw = 0;
		1172	sv_setsv (ERRSV, exception);
		1173	croak (0);
		1174	}
		1175	}
767	}	1176	}
768	}	1177	}
769		1178
770	struct transfer_args	1179	struct transfer_args
771	{	1180	{
772	struct coro prev, next;	1181	struct coro prev, next;
773	int flags;
774	};	1182	};
775		1183
776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1184	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1185	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
777		1186
		1187	/ high level stuff ******************************************************/
		1188
778	static void	1189	static int
779	coro_state_destroy (struct coro *coro)	1190	coro_state_destroy (pTHX_ struct coro *coro)
780	{	1191	{
781	if (coro->refcnt--)	1192	if (coro->flags & CF_DESTROYED)
782	return;	1193	return 0;
		1194
		1195	coro->flags \|= CF_DESTROYED;
		1196
		1197	if (coro->flags & CF_READY)
		1198	{
		1199	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1200	/* alternative: look through all ready queues and remove the coro */
		1201	LOCK;
		1202	--coro_nready;
		1203	UNLOCK;
		1204	}
		1205	else
		1206	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
783		1207
784	if (coro->mainstack && coro->mainstack != main_mainstack)	1208	if (coro->mainstack && coro->mainstack != main_mainstack)
785	{	1209	{
786	struct coro temp;	1210	struct coro temp;
787		1211
788	if (coro->flags & CF_RUNNING)	1212	if (coro->flags & CF_RUNNING)
789	croak ("FATAL: tried to destroy currently running coroutine");	1213	croak ("FATAL: tried to destroy currently running coroutine");
790		1214
791	SAVE ((&temp), TRANSFER_SAVE_ALL);	1215	save_perl (aTHX_ &temp);
792	LOAD (coro);	1216	load_perl (aTHX_ coro);
793		1217
794	coro_destroy_stacks ();	1218	coro_destroy (aTHX_ coro);
795		1219
796	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1220	load_perl (aTHX_ &temp);
797		1221
798	coro->mainstack = 0;	1222	coro->slot = 0;
799	}	1223	}
800		1224
801	cctx_destroy (coro->cctx);	1225	cctx_destroy (coro->cctx);
802	SvREFCNT_dec (coro->args);	1226	SvREFCNT_dec (coro->args);
803	Safefree (coro);	1227
		1228	if (coro->next) coro->next->prev = coro->prev;
		1229	if (coro->prev) coro->prev->next = coro->next;
		1230	if (coro == coro_first) coro_first = coro->next;
		1231
		1232	return 1;
804	}	1233	}
805		1234
806	static int	1235	static int
807	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1236	coro_state_free (pTHX_ SV sv, MAGIC mg)
808	{	1237	{
809	struct coro coro = (struct coro )mg->mg_ptr;	1238	struct coro coro = (struct coro )mg->mg_ptr;
810	mg->mg_ptr = 0;	1239	mg->mg_ptr = 0;
811		1240
		1241	coro->hv = 0;
		1242
		1243	if (--coro->refcnt < 0)
		1244	{
812	coro_state_destroy (coro);	1245	coro_state_destroy (aTHX_ coro);
		1246	Safefree (coro);
		1247	}
813		1248
814	return 0;	1249	return 0;
815	}	1250	}
816		1251
817	static int	1252	static int
…		…
824	return 0;	1259	return 0;
825	}	1260	}
826		1261
827	static MGVTBL coro_state_vtbl = {	1262	static MGVTBL coro_state_vtbl = {
828	0, 0, 0, 0,	1263	0, 0, 0, 0,
829	coro_state_clear,	1264	coro_state_free,
830	0,	1265	0,
831	#ifdef MGf_DUP	1266	#ifdef MGf_DUP
832	coro_state_dup,	1267	coro_state_dup,
833	#else	1268	#else
834	# define MGf_DUP 0	1269	# define MGf_DUP 0
835	#endif	1270	#endif
836	};	1271	};
837		1272
838	static struct coro *
839	SvSTATE (SV *coro)
840	{
841	HV *stash;
842	MAGIC *mg;
843
844	if (SvROK (coro))
845	coro = SvRV (coro);
846
847	stash = SvSTASH (coro);
848	if (stash != coro_stash && stash != coro_state_stash)
849	{
850	/* very slow, but rare, check */
851	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
852	croak ("Coro::State object required");
853	}
854
855	mg = SvMAGIC (coro);
856	assert (mg->mg_type == PERL_MAGIC_ext);
857	return (struct coro *)mg->mg_ptr;
858	}
859
860	static void	1273	static void
861	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1274	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
862	{	1275	{
863	ta->prev = SvSTATE (prev);	1276	ta->prev = SvSTATE (prev_sv);
864	ta->next = SvSTATE (next);	1277	ta->next = SvSTATE (next_sv);
865	ta->flags = flags;	1278	TRANSFER_CHECK (*ta);
866	}	1279	}
867		1280
868	static void	1281	static void
869	api_transfer (SV prev, SV next, int flags)	1282	api_transfer (SV prev_sv, SV next_sv)
870	{	1283	{
		1284	dTHX;
871	struct transfer_args ta;	1285	struct transfer_args ta;
872		1286
873	prepare_transfer (&ta, prev, next, flags);	1287	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
874	TRANSFER (ta);	1288	TRANSFER (ta);
875	}	1289	}
876		1290
877	/ Coro ******************************************************************/	1291	/ Coro ******************************************************************/
878		1292
879	#define PRIO_MAX 3
880	#define PRIO_HIGH 1
881	#define PRIO_NORMAL 0
882	#define PRIO_LOW -1
883	#define PRIO_IDLE -3
884	#define PRIO_MIN -4
885
886	/* for Coro.pm */
887	static SV *coro_current;
888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
889	static int coro_nready;
890
891	static void	1293	static void
892	coro_enq (SV *coro_sv)	1294	coro_enq (pTHX_ SV *coro_sv)
893	{	1295	{
894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1296	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
895	coro_nready++;
896	}	1297	}
897		1298
898	static SV *	1299	static SV *
899	coro_deq (int min_prio)	1300	coro_deq (pTHX_ int min_prio)
900	{	1301	{
901	int prio = PRIO_MAX - PRIO_MIN;	1302	int prio = PRIO_MAX - PRIO_MIN;
902		1303
903	min_prio -= PRIO_MIN;	1304	min_prio -= PRIO_MIN;
904	if (min_prio < 0)	1305	if (min_prio < 0)
905	min_prio = 0;	1306	min_prio = 0;
906		1307
907	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1308	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
908	if (AvFILLp (coro_ready [prio]) >= 0)	1309	if (AvFILLp (coro_ready [prio]) >= 0)
909	{
910	coro_nready--;
911	return av_shift (coro_ready [prio]);	1310	return av_shift (coro_ready [prio]);
912	}
913		1311
914	return 0;	1312	return 0;
915	}	1313	}
916		1314
917	static int	1315	static int
918	api_ready (SV *coro_sv)	1316	api_ready (SV *coro_sv)
919	{	1317	{
		1318	dTHX;
920	struct coro *coro;	1319	struct coro *coro;
921		1320
922	if (SvROK (coro_sv))	1321	if (SvROK (coro_sv))
923	coro_sv = SvRV (coro_sv);	1322	coro_sv = SvRV (coro_sv);
924		1323
925	coro = SvSTATE (coro_sv);	1324	coro = SvSTATE (coro_sv);
926		1325
927	if (coro->flags & CF_READY)	1326	if (coro->flags & CF_READY)
928	return 0;	1327	return 0;
929		1328
930	#if 0 /* this is actually harmless */
931	if (coro->flags & CF_RUNNING)
932	croak ("Coro::ready called on currently running coroutine");
933	#endif
934
935	coro->flags \|= CF_READY;	1329	coro->flags \|= CF_READY;
936		1330
937	LOCK;	1331	LOCK;
938	coro_enq (SvREFCNT_inc (coro_sv));	1332	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1333	++coro_nready;
939	UNLOCK;	1334	UNLOCK;
940		1335
941	return 1;	1336	return 1;
942	}	1337	}
943		1338
944	static int	1339	static int
945	api_is_ready (SV *coro_sv)	1340	api_is_ready (SV *coro_sv)
946	{	1341	{
		1342	dTHX;
947	return !!SvSTATE (coro_sv)->flags & CF_READY;	1343	return !!(SvSTATE (coro_sv)->flags & CF_READY);
948	}	1344	}
949		1345
950	static void	1346	static void
951	prepare_schedule (struct transfer_args *ta)	1347	prepare_schedule (pTHX_ struct transfer_args *ta)
952	{	1348	{
953	SV prev, next;	1349	SV prev_sv, next_sv;
954		1350
955	for (;;)	1351	for (;;)
956	{	1352	{
957	LOCK;	1353	LOCK;
958	next = coro_deq (PRIO_MIN);	1354	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1355
		1356	/* nothing to schedule: call the idle handler */
		1357	if (expect_false (!next_sv))
		1358	{
		1359	dSP;
		1360	UNLOCK;
		1361
		1362	ENTER;
		1363	SAVETMPS;
		1364
		1365	PUSHMARK (SP);
		1366	PUTBACK;
		1367	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1368
		1369	FREETMPS;
		1370	LEAVE;
		1371	continue;
		1372	}
		1373
		1374	ta->next = SvSTATE (next_sv);
		1375
		1376	/* cannot transfer to destroyed coros, skip and look for next */
		1377	if (expect_false (ta->next->flags & CF_DESTROYED))
		1378	{
		1379	UNLOCK;
		1380	SvREFCNT_dec (next_sv);
		1381	/* coro_nready is already taken care of by destroy */
		1382	continue;
		1383	}
		1384
		1385	--coro_nready;
959	UNLOCK;	1386	UNLOCK;
960
961	if (next)
962	break;	1387	break;
963
964	{
965	dSP;
966
967	ENTER;
968	SAVETMPS;
969
970	PUSHMARK (SP);
971	PUTBACK;
972	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
973
974	FREETMPS;
975	LEAVE;
976	}	1388	}
977	}
978
979	prev = SvRV (coro_current);
980	SvRV_set (coro_current, next);
981		1389
982	/* free this only after the transfer */	1390	/* free this only after the transfer */
		1391	prev_sv = SvRV (coro_current);
		1392	ta->prev = SvSTATE (prev_sv);
		1393	TRANSFER_CHECK (*ta);
		1394	assert (ta->next->flags & CF_READY);
		1395	ta->next->flags &= ~CF_READY;
		1396	SvRV_set (coro_current, next_sv);
		1397
983	LOCK;	1398	LOCK;
984	free_coro_mortal ();	1399	free_coro_mortal (aTHX);
		1400	coro_mortal = prev_sv;
985	UNLOCK;	1401	UNLOCK;
986	coro_mortal = prev;
987
988	assert (!SvROK(prev));//D
989	assert (!SvROK(next));//D
990
991	ta->prev = SvSTATE (prev);
992	ta->next = SvSTATE (next);
993	ta->flags = TRANSFER_SAVE_ALL;
994
995	assert (ta->flags & CF_READY);
996	ta->next->flags &= ~CF_READY;
997	}	1402	}
998		1403
999	static void	1404	static void
1000	prepare_cede (struct transfer_args *ta)	1405	prepare_cede (pTHX_ struct transfer_args *ta)
1001	{	1406	{
1002	api_ready (coro_current);	1407	api_ready (coro_current);
1003
1004	prepare_schedule (ta);	1408	prepare_schedule (aTHX_ ta);
		1409	}
		1410
		1411	static int
		1412	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1413	{
		1414	if (coro_nready)
		1415	{
		1416	SV *prev = SvRV (coro_current);
		1417	prepare_schedule (aTHX_ ta);
		1418	api_ready (prev);
		1419	return 1;
		1420	}
		1421	else
		1422	return 0;
1005	}	1423	}
1006		1424
1007	static void	1425	static void
1008	api_schedule (void)	1426	api_schedule (void)
1009	{	1427	{
		1428	dTHX;
1010	struct transfer_args ta;	1429	struct transfer_args ta;
1011		1430
1012	prepare_schedule (&ta);	1431	prepare_schedule (aTHX_ &ta);
1013	TRANSFER (ta);	1432	TRANSFER (ta);
1014	}	1433	}
1015		1434
1016	static void	1435	static int
1017	api_cede (void)	1436	api_cede (void)
1018	{	1437	{
		1438	dTHX;
1019	struct transfer_args ta;	1439	struct transfer_args ta;
1020		1440
1021	prepare_cede (&ta);	1441	prepare_cede (aTHX_ &ta);
		1442
		1443	if (expect_true (ta.prev != ta.next))
		1444	{
1022	TRANSFER (ta);	1445	TRANSFER (ta);
		1446	return 1;
		1447	}
		1448	else
		1449	return 0;
1023	}	1450	}
1024		1451
		1452	static int
		1453	api_cede_notself (void)
		1454	{
		1455	dTHX;
		1456	struct transfer_args ta;
		1457
		1458	if (prepare_cede_notself (aTHX_ &ta))
		1459	{
		1460	TRANSFER (ta);
		1461	return 1;
		1462	}
		1463	else
		1464	return 0;
		1465	}
		1466
		1467	static void
		1468	api_trace (SV *coro_sv, int flags)
		1469	{
		1470	dTHX;
		1471	struct coro *coro = SvSTATE (coro_sv);
		1472
		1473	if (flags & CC_TRACE)
		1474	{
		1475	if (!coro->cctx)
		1476	coro->cctx = cctx_new ();
		1477	else if (!(coro->cctx->flags & CC_TRACE))
		1478	croak ("cannot enable tracing on coroutine with custom stack");
		1479
		1480	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1481	}
		1482	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1483	{
		1484	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1485
		1486	if (coro->flags & CF_RUNNING)
		1487	PL_runops = RUNOPS_DEFAULT;
		1488	else
		1489	coro->slot->runops = RUNOPS_DEFAULT;
		1490	}
		1491	}
		1492
1025	MODULE = Coro::State PACKAGE = Coro::State	1493	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1026		1494
1027	PROTOTYPES: DISABLE	1495	PROTOTYPES: DISABLE
1028		1496
1029	BOOT:	1497	BOOT:
1030	{	1498	{
1031	#ifdef USE_ITHREADS	1499	#ifdef USE_ITHREADS
1032	MUTEX_INIT (&coro_mutex);	1500	MUTEX_INIT (&coro_mutex);
1033	#endif	1501	#endif
1034	BOOT_PAGESIZE;	1502	BOOT_PAGESIZE;
1035		1503
		1504	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1505	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1506
		1507	hv_sig = coro_get_hv ("SIG", TRUE);
		1508	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1509	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1510
		1511	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1512	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1513
1036	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1514	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1037		1515
1038	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1516	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1039	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1040	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1519	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1041		1520
1042	main_mainstack = PL_mainstack;	1521	main_mainstack = PL_mainstack;
		1522	main_top_env = PL_top_env;
		1523
		1524	while (main_top_env->je_prev)
		1525	main_top_env = main_top_env->je_prev;
1043		1526
1044	coroapi.ver = CORO_API_VERSION;	1527	coroapi.ver = CORO_API_VERSION;
1045	coroapi.transfer = api_transfer;	1528	coroapi.transfer = api_transfer;
1046		1529
1047	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1530	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1054	struct coro *coro;	1537	struct coro *coro;
1055	HV *hv;	1538	HV *hv;
1056	int i;	1539	int i;
1057		1540
1058	Newz (0, coro, 1, struct coro);	1541	Newz (0, coro, 1, struct coro);
1059	coro->args = newAV ();	1542	coro->args = newAV ();
1060	coro->flags = CF_NEW;	1543	coro->flags = CF_NEW;
1061		1544
		1545	if (coro_first) coro_first->prev = coro;
		1546	coro->next = coro_first;
		1547	coro_first = coro;
		1548
1062	hv = newHV ();	1549	coro->hv = hv = newHV ();
1063	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1550	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1551	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1065		1552
		1553	av_extend (coro->args, items - 1);
1066	for (i = 1; i < items; i++)	1554	for (i = 1; i < items; i++)
1067	av_push (coro->args, newSVsv (ST (i)));	1555	av_push (coro->args, newSVsv (ST (i)));
1068	}	1556	}
1069	OUTPUT:	1557	OUTPUT:
1070	RETVAL	1558	RETVAL
1071		1559
		1560	# these not obviously related functions are all rolled into the same xs
		1561	# function to increase chances that they all will call transfer with the same
		1562	# stack offset
1072	void	1563	void
1073	_set_stacklevel (...)	1564	_set_stacklevel (...)
1074	ALIAS:	1565	ALIAS:
1075	Coro::State::transfer = 1	1566	Coro::State::transfer = 1
1076	Coro::schedule = 2	1567	Coro::schedule = 2
1077	Coro::cede = 3	1568	Coro::cede = 3
		1569	Coro::cede_notself = 4
		1570	Coro::Event::next = 5
		1571	Coro::Event::next_cancel = 6
1078	CODE:	1572	PPCODE:
1079	{	1573	{
1080	struct transfer_args ta;	1574	struct transfer_args ta;
		1575	int repeat = 0;
1081		1576
1082	switch (ix)	1577	do
1083	{	1578	{
		1579	switch (ix)
		1580	{
1084	case 0:	1581	case 0:
1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1582	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1086	ta.next = 0;	1583	ta.next = 0;
1087	ta.flags = TRANSFER_SET_STACKLEVEL;
1088	break;	1584	break;
1089		1585
1090	case 1:	1586	case 1:
1091	if (items != 3)	1587	if (items != 2)
1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1588	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1093		1589
1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1590	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1095	break;	1591	break;
1096		1592
1097	case 2:	1593	case 2:
1098	prepare_schedule (&ta);	1594	prepare_schedule (aTHX_ &ta);
1099	break;	1595	break;
1100		1596
1101	case 3:	1597	case 3:
1102	prepare_cede (&ta);	1598	prepare_cede (aTHX_ &ta);
1103	break;	1599	break;
		1600
		1601	case 4:
		1602	if (!prepare_cede_notself (aTHX_ &ta))
		1603	XSRETURN_EMPTY;
		1604
		1605	break;
		1606
		1607	case 5:
		1608	case 6:
		1609	if (items != 1)
		1610	croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
		1611
		1612	{
		1613	SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
		1614
		1615	if (ev)
		1616	{
		1617	if (GIMME_V != G_VOID)
		1618	{
		1619	XPUSHs (ev);
		1620	XSRETURN (1);
		1621	}
		1622	else
		1623	XSRETURN_EMPTY;
		1624	}
		1625	}
		1626
		1627	prepare_schedule (aTHX_ &ta);
		1628	repeat = 1;
		1629	break;
		1630	}
		1631
		1632	BARRIER;
		1633	TRANSFER (ta);
		1634	BARRIER;
1104	}	1635	}
		1636	while (repeat);
1105		1637
1106	TRANSFER (ta);	1638	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
		1639	XSRETURN_YES;
1107	}	1640	}
1108		1641
1109	void	1642	bool
1110	_clone_state_from (SV dst, SV src)	1643	_destroy (SV *coro_sv)
1111	CODE:	1644	CODE:
1112	{	1645	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1113	struct coro *coro_src = SvSTATE (src);	1646	OUTPUT:
1114		1647	RETVAL
1115	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1116
1117	++coro_src->refcnt;
1118	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1119	}
1120		1648
1121	void	1649	void
1122	_exit (code)	1650	_exit (code)
1123	int code	1651	int code
1124	PROTOTYPE: $	1652	PROTOTYPE: $
1125	CODE:	1653	CODE:
1126	_exit (code);	1654	_exit (code);
1127		1655
1128	int	1656	int
		1657	cctx_stacksize (int new_stacksize = 0)
		1658	CODE:
		1659	RETVAL = coro_stacksize;
		1660	if (new_stacksize)
		1661	coro_stacksize = new_stacksize;
		1662	OUTPUT:
		1663	RETVAL
		1664
		1665	int
1129	cctx_count ()	1666	cctx_count ()
1130	CODE:	1667	CODE:
1131	RETVAL = cctx_count;	1668	RETVAL = cctx_count;
1132	OUTPUT:	1669	OUTPUT:
1133	RETVAL	1670	RETVAL
…		…
1137	CODE:	1674	CODE:
1138	RETVAL = cctx_idle;	1675	RETVAL = cctx_idle;
1139	OUTPUT:	1676	OUTPUT:
1140	RETVAL	1677	RETVAL
1141		1678
		1679	void
		1680	list ()
		1681	PPCODE:
		1682	{
		1683	struct coro *coro;
		1684	for (coro = coro_first; coro; coro = coro->next)
		1685	if (coro->hv)
		1686	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1687	}
		1688
		1689	void
		1690	call (Coro::State coro, SV *coderef)
		1691	ALIAS:
		1692	eval = 1
		1693	CODE:
		1694	{
		1695	if (coro->mainstack)
		1696	{
		1697	struct coro temp;
		1698
		1699	if (!(coro->flags & CF_RUNNING))
		1700	{
		1701	save_perl (aTHX_ &temp);
		1702	load_perl (aTHX_ coro);
		1703	}
		1704
		1705	{
		1706	dSP;
		1707	ENTER;
		1708	SAVETMPS;
		1709	PUSHMARK (SP);
		1710	PUTBACK;
		1711
		1712	if (ix)
		1713	eval_sv (coderef, 0);
		1714	else
		1715	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1716
		1717	SPAGAIN;
		1718	FREETMPS;
		1719	LEAVE;
		1720	PUTBACK;
		1721	}
		1722
		1723	if (!(coro->flags & CF_RUNNING))
		1724	{
		1725	save_perl (aTHX_ coro);
		1726	load_perl (aTHX_ &temp);
		1727	}
		1728	}
		1729	}
		1730
		1731	SV *
		1732	is_ready (Coro::State coro)
		1733	PROTOTYPE: $
		1734	ALIAS:
		1735	is_ready = CF_READY
		1736	is_running = CF_RUNNING
		1737	is_new = CF_NEW
		1738	is_destroyed = CF_DESTROYED
		1739	CODE:
		1740	RETVAL = boolSV (coro->flags & ix);
		1741	OUTPUT:
		1742	RETVAL
		1743
		1744	void
		1745	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1746
		1747	SV *
		1748	has_stack (Coro::State coro)
		1749	PROTOTYPE: $
		1750	CODE:
		1751	RETVAL = boolSV (!!coro->cctx);
		1752	OUTPUT:
		1753	RETVAL
		1754
		1755	int
		1756	is_traced (Coro::State coro)
		1757	PROTOTYPE: $
		1758	CODE:
		1759	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1760	OUTPUT:
		1761	RETVAL
		1762
		1763	IV
		1764	rss (Coro::State coro)
		1765	PROTOTYPE: $
		1766	ALIAS:
		1767	usecount = 1
		1768	CODE:
		1769	switch (ix)
		1770	{
		1771	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1772	case 1: RETVAL = coro->usecount; break;
		1773	}
		1774	OUTPUT:
		1775	RETVAL
		1776
		1777
1142	MODULE = Coro::State PACKAGE = Coro	1778	MODULE = Coro::State PACKAGE = Coro
1143		1779
1144	BOOT:	1780	BOOT:
1145	{	1781	{
1146	int i;	1782	int i;
1147		1783
		1784	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1785	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1786	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1787
		1788	coro_current = coro_get_sv ("Coro::current", FALSE);
		1789	SvREADONLY_on (coro_current);
		1790
1148	coro_stash = gv_stashpv ("Coro", TRUE);	1791	coro_stash = gv_stashpv ("Coro", TRUE);
1149		1792
1150	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1793	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1151	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1794	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1795	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1796	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1797	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1798	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1156		1799
1157	coro_current = get_sv ("Coro::current", FALSE);
1158	SvREADONLY_on (coro_current);
1159
1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1800	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1161	coro_ready[i] = newAV ();	1801	coro_ready[i] = newAV ();
1162		1802
1163	{	1803	{
1164	SV *sv = perl_get_sv("Coro::API", 1);	1804	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1805	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1165		1806
1166	coroapi.schedule = api_schedule;	1807	coroapi.schedule = api_schedule;
1167	coroapi.cede = api_cede;	1808	coroapi.cede = api_cede;
		1809	coroapi.cede_notself = api_cede_notself;
1168	coroapi.ready = api_ready;	1810	coroapi.ready = api_ready;
1169	coroapi.is_ready = api_is_ready;	1811	coroapi.is_ready = api_is_ready;
1170	coroapi.nready = &coro_nready;	1812	coroapi.nready = &coro_nready;
1171	coroapi.current = coro_current;	1813	coroapi.current = coro_current;
1172		1814
1173	GCoroAPI = &coroapi;	1815	GCoroAPI = &coroapi;
1174	sv_setiv (sv, (IV)&coroapi);	1816	sv_setiv (sv, (IV)&coroapi);
1175	SvREADONLY_on (sv);	1817	SvREADONLY_on (sv);
1176	}	1818	}
1177	}	1819	}
		1820
		1821	void
		1822	_set_current (SV *current)
		1823	PROTOTYPE: $
		1824	CODE:
		1825	SvREFCNT_dec (SvRV (coro_current));
		1826	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1178		1827
1179	int	1828	int
1180	prio (Coro::State coro, int newprio = 0)	1829	prio (Coro::State coro, int newprio = 0)
1181	ALIAS:	1830	ALIAS:
1182	nice = 1	1831	nice = 1
…		…
1185	RETVAL = coro->prio;	1834	RETVAL = coro->prio;
1186		1835
1187	if (items > 1)	1836	if (items > 1)
1188	{	1837	{
1189	if (ix)	1838	if (ix)
1190	newprio += coro->prio;	1839	newprio = coro->prio - newprio;
1191		1840
1192	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1841	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1193	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1842	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1194		1843
1195	coro->prio = newprio;	1844	coro->prio = newprio;
1196	}	1845	}
1197	}	1846	}
		1847	OUTPUT:
		1848	RETVAL
1198		1849
1199	SV *	1850	SV *
1200	ready (SV *self)	1851	ready (SV *self)
1201	PROTOTYPE: $	1852	PROTOTYPE: $
1202	CODE:	1853	CODE:
1203	RETVAL = boolSV (api_ready (self));	1854	RETVAL = boolSV (api_ready (self));
1204	OUTPUT:	1855	OUTPUT:
1205	RETVAL	1856	RETVAL
1206		1857
1207	SV *
1208	is_ready (SV *self)
1209	PROTOTYPE: $
1210	CODE:
1211	RETVAL = boolSV (api_is_ready (self));
1212	OUTPUT:
1213	RETVAL
1214
1215	int	1858	int
1216	nready (...)	1859	nready (...)
1217	PROTOTYPE:	1860	PROTOTYPE:
1218	CODE:	1861	CODE:
1219	RETVAL = coro_nready;	1862	RETVAL = coro_nready;
1220	OUTPUT:	1863	OUTPUT:
1221	RETVAL	1864	RETVAL
1222		1865
1223	void	1866	void
1224	_set_current (SV *current)	1867	throw (Coro::State self, SV *throw = &PL_sv_undef)
1225	PROTOTYPE: $	1868	PROTOTYPE: $;$
		1869	CODE:
		1870	SvREFCNT_dec (self->throw);
		1871	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1872
		1873	# for async_pool speedup
		1874	void
		1875	_pool_1 (SV *cb)
1226	CODE:	1876	CODE:
1227	SvREFCNT_dec (SvRV (coro_current));	1877	{
1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1878	struct coro *coro = SvSTATE (coro_current);
		1879	HV hv = (HV )SvRV (coro_current);
		1880	AV *defav = GvAV (PL_defgv);
		1881	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1882	AV *invoke_av;
		1883	int i, len;
		1884
		1885	if (!invoke)
		1886	croak ("\3async_pool terminate\2\n");
		1887
		1888	SvREFCNT_dec (coro->saved_deffh);
		1889	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1890
		1891	hv_store (hv, "desc", sizeof ("desc") - 1,
		1892	newSVpvn (strpair ("[async_pool]")), 0);
		1893
		1894	invoke_av = (AV *)SvRV (invoke);
		1895	len = av_len (invoke_av);
		1896
		1897	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1898
		1899	if (len > 0)
		1900	{
		1901	av_fill (defav, len - 1);
		1902	for (i = 0; i < len; ++i)
		1903	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1904	}
		1905
		1906	SvREFCNT_dec (invoke);
		1907	}
		1908
		1909	void
		1910	_pool_2 (SV *cb)
		1911	CODE:
		1912	{
		1913	struct coro *coro = SvSTATE (coro_current);
		1914
		1915	sv_setsv (cb, &PL_sv_undef);
		1916
		1917	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1918	coro->saved_deffh = 0;
		1919
		1920	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1921	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1922	croak ("\3async_pool terminate\2\n");
		1923
		1924	av_clear (GvAV (PL_defgv));
		1925	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1926	newSVpvn (strpair ("[async_pool idle]")), 0);
		1927
		1928	coro->prio = 0;
		1929
		1930	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1931	api_trace (coro_current, 0);
		1932
		1933	av_push (av_async_pool, newSVsv (coro_current));
		1934	}
		1935
1229		1936
1230	MODULE = Coro::State PACKAGE = Coro::AIO	1937	MODULE = Coro::State PACKAGE = Coro::AIO
1231		1938
1232	SV *	1939	SV *
1233	_get_state ()	1940	_get_state ()
1234	CODE:	1941	CODE:
1235	{	1942	{
1236	struct {	1943	struct io_state *data;
1237	int errorno;
1238	int laststype;
1239	int laststatval;
1240	Stat_t statcache;
1241	} data;
1242		1944
		1945	RETVAL = newSV (sizeof (struct io_state));
		1946	data = (struct io_state *)SvPVX (RETVAL);
		1947	SvCUR_set (RETVAL, sizeof (struct io_state));
		1948	SvPOK_only (RETVAL);
		1949
1243	data.errorno = errno;	1950	data->errorno = errno;
1244	data.laststype = PL_laststype;	1951	data->laststype = PL_laststype;
1245	data.laststatval = PL_laststatval;	1952	data->laststatval = PL_laststatval;
1246	data.statcache = PL_statcache;	1953	data->statcache = PL_statcache;
1247
1248	RETVAL = newSVpvn ((char *)&data, sizeof data);
1249	}	1954	}
1250	OUTPUT:	1955	OUTPUT:
1251	RETVAL	1956	RETVAL
1252		1957
1253	void	1958	void
1254	_set_state (char *data_)	1959	_set_state (char *data_)
1255	PROTOTYPE: $	1960	PROTOTYPE: $
1256	CODE:	1961	CODE:
1257	{	1962	{
1258	struct {	1963	struct io_state data = (void )data_;
1259	int errorno;
1260	int laststype;
1261	int laststatval;
1262	Stat_t statcache;
1263	} data = (void )data_;
1264		1964
1265	errno = data->errorno;	1965	errno = data->errorno;
1266	PL_laststype = data->laststype;	1966	PL_laststype = data->laststype;
1267	PL_laststatval = data->laststatval;	1967	PL_laststatval = data->laststatval;
1268	PL_statcache = data->statcache;	1968	PL_statcache = data->statcache;
1269	}	1969	}
		1970

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Comparing Coro/Coro/State.xs (file contents): Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs. Revision 1.207 by root, Tue Oct 9 22:29:27 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.207 by root, Tue Oct 9 22:29:27 2007 UTC