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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.111 by root, Thu Nov 30 18:21:14 2006 UTC vs.
Revision 1.210 by root, Wed Oct 10 03:24:40 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	#define strpair(const) const, sizeof (const) - 1
		137
		138	/* helper storage struct for Coro::AIO */
		139	struct io_state
		140	{
		141	int errorno;
		142	I32 laststype;
		143	int laststatval;
		144	Stat_t statcache;
		145	};
		146
		147	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	148	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	149	static AV main_mainstack; / used to differentiate between $main and others */
		150	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	151	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	152	static SV coro_mortal; / will be freed after next transfer */
107		153
108	static struct coro_cctx *cctx_first;	154	static GV irsgv; / $/ */
		155	static GV stdoutgv; / STDOUT /
		156
		157	static HV hv_sig; / %SIG */
		158	static SV *sv_diehook;
		159	static SV *sv_warnhook;
		160
		161	/* async_pool helper stuff */
		162	static SV *sv_pool_rss;
		163	static SV *sv_pool_size;
		164	static AV *av_async_pool;
		165
		166	static struct coro_cctx cctx_first[3]; / index by GIMME_V type, void, scalar, array */
109	static int cctx_count, cctx_idle;	167	static int cctx_count, cctx_idle[3];
		168
		169	enum {
		170	CC_MAPPED = 0x01,
		171	CC_NOREUSE = 0x02, /* throw this away after tracing */
		172	CC_TRACE = 0x04,
		173	CC_TRACE_SUB = 0x08, /* trace sub calls */
		174	CC_TRACE_LINE = 0x10, /* trace each statement */
		175	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		176	};
110		177
111	/* this is a structure representing a c-level coroutine */	178	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	179	typedef struct coro_cctx {
113	struct coro_cctx *next;	180	struct coro_cctx *next;
114		181
115	/* the stack */	182	/* the stack */
116	void *sptr;	183	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	184	size_t ssize;
118		185
119	/* cpu state */	186	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	187	void idle_sp; / sp of top-level transfer/schedule/cede call */
		188	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	189	JMPENV *top_env;
122	coro_context cctx;	190	coro_context cctx;
123		191
124	int inuse;
125
126	#if USE_VALGRIND	192	#if CORO_USE_VALGRIND
127	int valgrind_id;	193	int valgrind_id;
128	#endif	194	#endif
		195	unsigned char flags;
129	} coro_cctx;	196	} coro_cctx;
130		197
131	enum {	198	enum {
132	CF_RUNNING, /* coroutine is running */	199	CF_RUNNING = 0x0001, /* coroutine is running */
133	CF_READY, /* coroutine is ready */	200	CF_READY = 0x0002, /* coroutine is ready */
		201	CF_NEW = 0x0004, /* has never been switched to */
		202	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
134	};	203	};
		204
		205	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		206	typedef struct {
		207	SV *defsv;
		208	AV *defav;
		209	SV *errsv;
		210	SV *irsgv;
		211	#define VAR(name,type) type name;
		212	# include "state.h"
		213	#undef VAR
		214	} perl_slots;
		215
		216	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
135		217
136	/* this is a structure representing a perl-level coroutine */	218	/* this is a structure representing a perl-level coroutine */
137	struct coro {	219	struct coro {
138	/* the c coroutine allocated to this perl coroutine, if any */	220	/* the c coroutine allocated to this perl coroutine, if any */
139	coro_cctx *cctx;	221	coro_cctx *cctx;
		222	int gimme;
140		223
		224	/* process data */
		225	AV *mainstack;
		226	perl_slots slot; / basically the saved sp */
		227
141	/* data associated with this coroutine (initial args) */	228	AV args; / data associated with this coroutine (initial args) */
142	AV *args;	229	int refcnt; /* coroutines are refcounted, yes */
143	int refcnt;	230	int flags; /* CF_ flags */
144	int flags;	231	HV hv; / the perl hash associated with this coro, if any */
145		232
146	/* optionally saved, might be zero */	233	/* statistics */
147	AV *defav;	234	int usecount; /* number of transfers to this coro */
148	SV *defsv;
149	SV *errsv;
150
151	#define VAR(name,type) type name;
152	# include "state.h"
153	#undef VAR
154		235
155	/* coro process data */	236	/* coro process data */
156	int prio;	237	int prio;
		238	SV throw; / exception to be thrown */
		239
		240	/* async_pool */
		241	SV *saved_deffh;
		242
		243	/* linked list */
		244	struct coro next, prev;
157	};	245	};
158		246
159	typedef struct coro *Coro__State;	247	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	248	typedef struct coro *Coro__State_or_hashref;
161		249
		250	/ Coro ******************************************************************/
		251
		252	#define PRIO_MAX 3
		253	#define PRIO_HIGH 1
		254	#define PRIO_NORMAL 0
		255	#define PRIO_LOW -1
		256	#define PRIO_IDLE -3
		257	#define PRIO_MIN -4
		258
		259	/* for Coro.pm */
		260	static SV *coro_current;
		261	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		262	static int coro_nready;
		263	static struct coro *coro_first;
		264
		265	/ lowlevel stuff ********************************************************/
		266
		267	static SV *
		268	coro_get_sv (const char *name, int create)
		269	{
		270	#if PERL_VERSION_ATLEAST (5,9,0)
		271	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		272	get_sv (name, create);
		273	#endif
		274	return get_sv (name, create);
		275	}
		276
162	static AV *	277	static AV *
		278	coro_get_av (const char *name, int create)
		279	{
		280	#if PERL_VERSION_ATLEAST (5,9,0)
		281	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		282	get_av (name, create);
		283	#endif
		284	return get_av (name, create);
		285	}
		286
		287	static HV *
		288	coro_get_hv (const char *name, int create)
		289	{
		290	#if PERL_VERSION_ATLEAST (5,9,0)
		291	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		292	get_hv (name, create);
		293	#endif
		294	return get_hv (name, create);
		295	}
		296
		297	static AV *
163	coro_clone_padlist (CV *cv)	298	coro_clone_padlist (pTHX_ CV *cv)
164	{	299	{
165	AV *padlist = CvPADLIST (cv);	300	AV *padlist = CvPADLIST (cv);
166	AV newpadlist, newpad;	301	AV newpadlist, newpad;
167		302
168	newpadlist = newAV ();	303	newpadlist = newAV ();
…		…
180		315
181	return newpadlist;	316	return newpadlist;
182	}	317	}
183		318
184	static void	319	static void
185	free_padlist (AV *padlist)	320	free_padlist (pTHX_ AV *padlist)
186	{	321	{
187	/* may be during global destruction */	322	/* may be during global destruction */
188	if (SvREFCNT (padlist))	323	if (SvREFCNT (padlist))
189	{	324	{
190	I32 i = AvFILLp (padlist);	325	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	346	AV *padlist;
212	AV av = (AV )mg->mg_obj;	347	AV av = (AV )mg->mg_obj;
213		348
214	/* casting is fun. */	349	/* casting is fun. */
215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	350	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
216	free_padlist (padlist);	351	free_padlist (aTHX_ padlist);
217		352
218	SvREFCNT_dec (av);	353	SvREFCNT_dec (av);
219		354
220	return 0;	355	return 0;
221	}	356	}
…		…
229	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	364	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
230	? SvMAGIC (cv) \	365	? SvMAGIC (cv) \
231	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	366	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
232	: 0	367	: 0
233		368
		369	static struct coro *
		370	SvSTATE_ (pTHX_ SV *coro)
		371	{
		372	HV *stash;
		373	MAGIC *mg;
		374
		375	if (SvROK (coro))
		376	coro = SvRV (coro);
		377
		378	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		379	croak ("Coro::State object required");
		380
		381	stash = SvSTASH (coro);
		382	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		383	{
		384	/* very slow, but rare, check */
		385	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		386	croak ("Coro::State object required");
		387	}
		388
		389	mg = CORO_MAGIC (coro);
		390	return (struct coro *)mg->mg_ptr;
		391	}
		392
		393	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		394
234	/* the next two functions merely cache the padlists */	395	/* the next two functions merely cache the padlists */
235	static void	396	static void
236	get_padlist (CV *cv)	397	get_padlist (pTHX_ CV *cv)
237	{	398	{
238	MAGIC *mg = CORO_MAGIC (cv);	399	MAGIC *mg = CORO_MAGIC (cv);
239	AV *av;	400	AV *av;
240		401
241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	402	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	403	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	404	else
244	{	405	{
245	#if 0	406	#if CORO_PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	407	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	408	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	409	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	410	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	411	SvREFCNT_dec (cp);
251	#else	412	#else
252	CvPADLIST (cv) = coro_clone_padlist (cv);	413	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253	#endif	414	#endif
254	}	415	}
255	}	416	}
256		417
257	static void	418	static void
258	put_padlist (CV *cv)	419	put_padlist (pTHX_ CV *cv)
259	{	420	{
260	MAGIC *mg = CORO_MAGIC (cv);	421	MAGIC *mg = CORO_MAGIC (cv);
261	AV *av;	422	AV *av;
262		423
263	if (!mg)	424	if (expect_false (!mg))
264	{	425	{
265	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	426	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
266	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	427	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
267	mg->mg_virtual = &vtbl_coro;	428	mg->mg_virtual = &vtbl_coro;
268	mg->mg_obj = (SV *)newAV ();	429	mg->mg_obj = (SV *)newAV ();
269	}	430	}
270		431
271	av = (AV *)mg->mg_obj;	432	av = (AV *)mg->mg_obj;
272		433
273	if (AvFILLp (av) >= AvMAX (av))	434	if (expect_false (AvFILLp (av) >= AvMAX (av)))
274	av_extend (av, AvMAX (av) + 1);	435	av_extend (av, AvMAX (av) + 1);
275		436
276	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	437	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
277	}	438	}
278		439
279	#define SB do {	440	/ load & save, init *****************************************************/
280	#define SE } while (0)
281		441
282	#define LOAD(state) load_state((state));
283	#define SAVE(state,flags) save_state((state),(flags));
284
285	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
286
287	static void	442	static void
288	load_state(Coro__State c)	443	load_perl (pTHX_ Coro__State c)
289	{	444	{
		445	perl_slots *slot = c->slot;
		446	c->slot = 0;
		447
		448	PL_mainstack = c->mainstack;
		449
		450	GvSV (PL_defgv) = slot->defsv;
		451	GvAV (PL_defgv) = slot->defav;
		452	GvSV (PL_errgv) = slot->errsv;
		453	GvSV (irsgv) = slot->irsgv;
		454
290	#define VAR(name,type) PL_ ## name = c->name;	455	#define VAR(name,type) PL_ ## name = slot->name;
291	# include "state.h"	456	# include "state.h"
292	#undef VAR	457	#undef VAR
293		458
294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	459	/hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);/
295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	460	/hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);/
296	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
297		461
298	{	462	{
299	dSP;	463	dSP;
		464
300	CV *cv;	465	CV *cv;
301		466
302	/* now do the ugly restore mess */	467	/* now do the ugly restore mess */
303	while ((cv = (CV *)POPs))	468	while (expect_true (cv = (CV *)POPs))
304	{	469	{
305	put_padlist (cv); /* mark this padlist as available */	470	put_padlist (aTHX_ cv); /* mark this padlist as available */
306	CvDEPTH (cv) = PTR2IV (POPs);	471	CvDEPTH (cv) = PTR2IV (POPs);
307	CvPADLIST (cv) = (AV *)POPs;	472	CvPADLIST (cv) = (AV *)POPs;
308	}	473	}
309		474
310	PUTBACK;	475	PUTBACK;
311	}	476	}
312	}	477	}
313		478
314	static void	479	static void
315	save_state(Coro__State c, int flags)	480	save_perl (pTHX_ Coro__State c)
316	{	481	{
317	{	482	{
318	dSP;	483	dSP;
319	I32 cxix = cxstack_ix;	484	I32 cxix = cxstack_ix;
320	PERL_CONTEXT *ccstk = cxstack;	485	PERL_CONTEXT *ccstk = cxstack;
…		…
323	/*	488	/*
324	* the worst thing you can imagine happens first - we have to save	489	* the worst thing you can imagine happens first - we have to save
325	* (and reinitialize) all cv's in the whole callchain :(	490	* (and reinitialize) all cv's in the whole callchain :(
326	*/	491	*/
327		492
328	PUSHs (Nullsv);	493	XPUSHs (Nullsv);
329	/* this loop was inspired by pp_caller */	494	/* this loop was inspired by pp_caller */
330	for (;;)	495	for (;;)
331	{	496	{
332	while (cxix >= 0)	497	while (expect_true (cxix >= 0))
333	{	498	{
334	PERL_CONTEXT *cx = &ccstk[cxix--];	499	PERL_CONTEXT *cx = &ccstk[cxix--];
335		500
336	if (CxTYPE(cx) == CXt_SUB)	501	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
337	{	502	{
338	CV *cv = cx->blk_sub.cv;	503	CV *cv = cx->blk_sub.cv;
339		504
340	if (CvDEPTH (cv))	505	if (expect_true (CvDEPTH (cv)))
341	{	506	{
342	EXTEND (SP, 3);	507	EXTEND (SP, 3);
343
344	PUSHs ((SV *)CvPADLIST(cv));	508	PUSHs ((SV *)CvPADLIST (cv));
345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	509	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
346	PUSHs ((SV *)cv);	510	PUSHs ((SV *)cv);
347		511
348	CvDEPTH (cv) = 0;	512	CvDEPTH (cv) = 0;
349	get_padlist (cv);	513	get_padlist (aTHX_ cv);
350	}	514	}
351	}	515	}
352	#ifdef CXt_FORMAT
353	else if (CxTYPE(cx) == CXt_FORMAT)
354	{
355	/* I never used formats, so how should I know how these are implemented? */
356	/* my bold guess is as a simple, plain sub... */
357	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
358	}
359	#endif
360	}	516	}
361		517
362	if (top_si->si_type == PERLSI_MAIN)	518	if (expect_true (top_si->si_type == PERLSI_MAIN))
363	break;	519	break;
364		520
365	top_si = top_si->si_prev;	521	top_si = top_si->si_prev;
366	ccstk = top_si->si_cxstack;	522	ccstk = top_si->si_cxstack;
367	cxix = top_si->si_cxix;	523	cxix = top_si->si_cxix;
368	}	524	}
369		525
370	PUTBACK;	526	PUTBACK;
371	}	527	}
372		528
373	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	529	/* allocate some space on the context stack for our purposes */
374	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	530	/* we manually unroll here, as usually 2 slots is enough */
375	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	531	if (SLOT_COUNT >= 1) CXINC;
		532	if (SLOT_COUNT >= 2) CXINC;
		533	if (SLOT_COUNT >= 3) CXINC;
		534	{
		535	int i;
		536	for (i = 3; i < SLOT_COUNT; ++i)
		537	CXINC;
		538	}
		539	cxstack_ix -= SLOT_COUNT; /* undo allocation */
376		540
		541	c->mainstack = PL_mainstack;
		542
		543	{
		544	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		545
		546	slot->defav = GvAV (PL_defgv);
		547	slot->defsv = DEFSV;
		548	slot->errsv = ERRSV;
		549	slot->irsgv = GvSV (irsgv);
		550
377	#define VAR(name,type)c->name = PL_ ## name;	551	#define VAR(name,type) slot->name = PL_ ## name;
378	# include "state.h"	552	# include "state.h"
379	#undef VAR	553	#undef VAR
		554	}
380	}	555	}
381		556
382	/*	557	/*
383	* allocate various perl stacks. This is an exact copy	558	* allocate various perl stacks. This is an exact copy
384	* of perl.c:init_stacks, except that it uses less memory	559	* of perl.c:init_stacks, except that it uses less memory
385	* on the (sometimes correct) assumption that coroutines do	560	* on the (sometimes correct) assumption that coroutines do
386	* not usually need a lot of stackspace.	561	* not usually need a lot of stackspace.
387	*/	562	*/
		563	#if CORO_PREFER_PERL_FUNCTIONS
		564	# define coro_init_stacks init_stacks
		565	#else
388	static void	566	static void
389	coro_init_stacks ()	567	coro_init_stacks (pTHX)
390	{	568	{
391	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	569	PL_curstackinfo = new_stackinfo(32, 8);
392	PL_curstackinfo->si_type = PERLSI_MAIN;	570	PL_curstackinfo->si_type = PERLSI_MAIN;
393	PL_curstack = PL_curstackinfo->si_stack;	571	PL_curstack = PL_curstackinfo->si_stack;
394	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	572	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395		573
396	PL_stack_base = AvARRAY(PL_curstack);	574	PL_stack_base = AvARRAY(PL_curstack);
397	PL_stack_sp = PL_stack_base;	575	PL_stack_sp = PL_stack_base;
398	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	576	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399		577
400	New(50,PL_tmps_stack,96,SV*);	578	New(50,PL_tmps_stack,32,SV*);
401	PL_tmps_floor = -1;	579	PL_tmps_floor = -1;
402	PL_tmps_ix = -1;	580	PL_tmps_ix = -1;
403	PL_tmps_max = 96;	581	PL_tmps_max = 32;
404		582
405	New(54,PL_markstack,16,I32);	583	New(54,PL_markstack,16,I32);
406	PL_markstack_ptr = PL_markstack;	584	PL_markstack_ptr = PL_markstack;
407	PL_markstack_max = PL_markstack + 16;	585	PL_markstack_max = PL_markstack + 16;
408		586
409	#ifdef SET_MARK_OFFSET	587	#ifdef SET_MARK_OFFSET
410	SET_MARK_OFFSET;	588	SET_MARK_OFFSET;
411	#endif	589	#endif
412		590
413	New(54,PL_scopestack,16,I32);	591	New(54,PL_scopestack,8,I32);
414	PL_scopestack_ix = 0;	592	PL_scopestack_ix = 0;
415	PL_scopestack_max = 16;	593	PL_scopestack_max = 8;
416		594
417	New(54,PL_savestack,96,ANY);	595	New(54,PL_savestack,24,ANY);
418	PL_savestack_ix = 0;	596	PL_savestack_ix = 0;
419	PL_savestack_max = 96;	597	PL_savestack_max = 24;
420		598
421	#if !PERL_VERSION_ATLEAST (5,9,0)	599	#if !PERL_VERSION_ATLEAST (5,9,0)
422	New(54,PL_retstack,8,OP*);	600	New(54,PL_retstack,4,OP*);
423	PL_retstack_ix = 0;	601	PL_retstack_ix = 0;
424	PL_retstack_max = 8;	602	PL_retstack_max = 4;
425	#endif	603	#endif
426	}	604	}
		605	#endif
427		606
428	/*	607	/*
429	* destroy the stacks, the callchain etc...	608	* destroy the stacks, the callchain etc...
430	*/	609	*/
431	static void	610	static void
432	coro_destroy_stacks ()	611	coro_destroy_stacks (pTHX)
433	{	612	{
434	if (!IN_DESTRUCT)
435	{
436	/* is this ugly, I ask? */
437	LEAVE_SCOPE (0);
438
439	/* sure it is, but more important: is it correct?? :/ */
440	FREETMPS;
441
442	/POPSTACK_TO (PL_mainstack);//D//use/
443	}
444
445	while (PL_curstackinfo->si_next)	613	while (PL_curstackinfo->si_next)
446	PL_curstackinfo = PL_curstackinfo->si_next;	614	PL_curstackinfo = PL_curstackinfo->si_next;
447		615
448	while (PL_curstackinfo)	616	while (PL_curstackinfo)
449	{	617	{
450	PERL_SI *p = PL_curstackinfo->si_prev;	618	PERL_SI *p = PL_curstackinfo->si_prev;
451		619
452	{ /D//remove/
453	dSP;
454	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455	PUTBACK; /* possibly superfluous */
456	}
457
458	if (!IN_DESTRUCT)	620	if (!IN_DESTRUCT)
459	{
460	dounwind (-1);/D//remove/
461	SvREFCNT_dec (PL_curstackinfo->si_stack);	621	SvREFCNT_dec (PL_curstackinfo->si_stack);
462	}
463		622
464	Safefree (PL_curstackinfo->si_cxstack);	623	Safefree (PL_curstackinfo->si_cxstack);
465	Safefree (PL_curstackinfo);	624	Safefree (PL_curstackinfo);
466	PL_curstackinfo = p;	625	PL_curstackinfo = p;
467	}	626	}
…		…
473	#if !PERL_VERSION_ATLEAST (5,9,0)	632	#if !PERL_VERSION_ATLEAST (5,9,0)
474	Safefree (PL_retstack);	633	Safefree (PL_retstack);
475	#endif	634	#endif
476	}	635	}
477		636
478	static void	637	static size_t
479	setup_coro (struct coro *coro)	638	coro_rss (pTHX_ struct coro *coro)
		639	{
		640	size_t rss = sizeof (*coro);
		641
		642	if (coro->mainstack)
		643	{
		644	perl_slots tmp_slot;
		645	perl_slots *slot;
		646
		647	if (coro->flags & CF_RUNNING)
		648	{
		649	slot = &tmp_slot;
		650
		651	#define VAR(name,type) slot->name = PL_ ## name;
		652	# include "state.h"
		653	#undef VAR
		654	}
		655	else
		656	slot = coro->slot;
		657
		658	rss += sizeof (slot->curstackinfo);
		659	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		660	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		661	rss += slot->tmps_max * sizeof (SV *);
		662	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		663	rss += slot->scopestack_max * sizeof (I32);
		664	rss += slot->savestack_max * sizeof (ANY);
		665
		666	#if !PERL_VERSION_ATLEAST (5,9,0)
		667	rss += slot->retstack_max * sizeof (OP *);
		668	#endif
		669	}
		670
		671	return rss;
		672	}
		673
		674	/ coroutine stack handling **********************************************/
		675
		676	static void
		677	coro_setup (pTHX_ struct coro *coro)
480	{	678	{
481	/*	679	/*
482	* emulate part of the perl startup here.	680	* emulate part of the perl startup here.
483	*/	681	*/
484
485	coro_init_stacks ();	682	coro_init_stacks (aTHX);
486		683
		684	PL_runops = RUNOPS_DEFAULT;
		685	PL_curcop = &PL_compiling;
		686	PL_in_eval = EVAL_NULL;
487	PL_curcop = 0;	687	PL_comppad = 0;
488	PL_in_eval = 0;
489	PL_curpm = 0;	688	PL_curpm = 0;
		689	PL_curpad = 0;
		690	PL_localizing = 0;
		691	PL_dirty = 0;
		692	PL_restartop = 0;
		693	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		694	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		695
		696	GvSV (PL_defgv) = newSV (0);
		697	GvAV (PL_defgv) = coro->args; coro->args = 0;
		698	GvSV (PL_errgv) = newSV (0);
		699	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		700	PL_rs = newSVsv (GvSV (irsgv));
		701	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
490		702
491	{	703	{
492	dSP;	704	dSP;
493	LOGOP myop;	705	LOGOP myop;
494		706
495	/* I have no idea why this is needed, but it is */
496	PUSHMARK (SP);
497
498	SvREFCNT_dec (GvAV (PL_defgv));
499	GvAV (PL_defgv) = coro->args; coro->args = 0;
500
501	Zero (&myop, 1, LOGOP);	707	Zero (&myop, 1, LOGOP);
502	myop.op_next = Nullop;	708	myop.op_next = Nullop;
503	myop.op_flags = OPf_WANT_VOID;	709	myop.op_flags = OPf_WANT_VOID;
504		710
		711	PUSHMARK (SP);
		712	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		713	PUTBACK;
505	PL_op = (OP *)&myop;	714	PL_op = (OP *)&myop;
506
507	PUSHMARK (SP);
508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
509	PUTBACK;
510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	715	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511	SPAGAIN;	716	SPAGAIN;
512		717
513	ENTER; /* necessary e.g. for dounwind */	718	/*
		719	* now its very tricky. the "tail" of the next transfer might end up
		720	* either in a new cctx, or an existing one.
		721	* in case of an existing one we have to take care of whatever
		722	* entersub and transfer do to the perl stack.
		723	*/
		724	ENTER;
		725	EXTEND (SP, 4);
		726	PUSHs ((SV )0); / items */
		727	PUSHs ((SV )0); / ix, set_stacklevel */
		728	PUSHs ((SV )(sp - PL_stack_base + 1)); / ax */
		729	PUSHs ((SV )0); / again */
		730	PUTBACK;
514	}	731	}
515	}
516		732
		733	/* this newly created coroutine might be run on an existing cctx which most
		734	* likely was suspended in set_stacklevel, called from entersub.
		735	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		736	* so we ENTER here for symmetry
		737	*/
		738	ENTER;
		739	}
		740
517	static void	741	static void
		742	coro_destroy (pTHX_ struct coro *coro)
		743	{
		744	if (!IN_DESTRUCT)
		745	{
		746	/* restore all saved variables and stuff */
		747	LEAVE_SCOPE (0);
		748	assert (PL_tmps_floor == -1);
		749
		750	/* free all temporaries */
		751	FREETMPS;
		752	assert (PL_tmps_ix == -1);
		753
		754	/* unwind all extra stacks */
		755	POPSTACK_TO (PL_mainstack);
		756
		757	/* unwind main stack */
		758	dounwind (-1);
		759	}
		760
		761	SvREFCNT_dec (GvSV (PL_defgv));
		762	SvREFCNT_dec (GvAV (PL_defgv));
		763	SvREFCNT_dec (GvSV (PL_errgv));
		764	SvREFCNT_dec (PL_defoutgv);
		765	SvREFCNT_dec (PL_rs);
		766	SvREFCNT_dec (GvSV (irsgv));
		767
		768	SvREFCNT_dec (PL_diehook);
		769	SvREFCNT_dec (PL_warnhook);
		770
		771	SvREFCNT_dec (coro->saved_deffh);
		772	SvREFCNT_dec (coro->throw);
		773
		774	coro_destroy_stacks (aTHX);
		775	}
		776
		777	static void
518	free_coro_mortal ()	778	free_coro_mortal (pTHX)
519	{	779	{
520	if (coro_mortal)	780	if (expect_true (coro_mortal))
521	{	781	{
522	SvREFCNT_dec (coro_mortal);	782	SvREFCNT_dec (coro_mortal);
523	coro_mortal = 0;	783	coro_mortal = 0;
524	}	784	}
525	}	785	}
526		786
		787	static int
		788	runops_trace (pTHX)
		789	{
		790	COP *oldcop = 0;
		791	int oldcxix = -2;
		792	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		793	coro_cctx *cctx = coro->cctx;
		794
		795	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		796	{
		797	PERL_ASYNC_CHECK ();
		798
		799	if (cctx->flags & CC_TRACE_ALL)
		800	{
		801	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		802	{
		803	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		804	SV bot, top;
		805	AV av = newAV (); / return values */
		806	SV **cb;
		807	dSP;
		808
		809	GV *gv = CvGV (cx->blk_sub.cv);
		810	SV *fullname = sv_2mortal (newSV (0));
		811	if (isGV (gv))
		812	gv_efullname3 (fullname, gv, 0);
		813
		814	bot = PL_stack_base + cx->blk_oldsp + 1;
		815	top = cx->blk_gimme == G_ARRAY ? SP + 1
		816	: cx->blk_gimme == G_SCALAR ? bot + 1
		817	: bot;
		818
		819	av_extend (av, top - bot);
		820	while (bot < top)
		821	av_push (av, SvREFCNT_inc (*bot++));
		822
		823	PL_runops = RUNOPS_DEFAULT;
		824	ENTER;
		825	SAVETMPS;
		826	EXTEND (SP, 3);
		827	PUSHMARK (SP);
		828	PUSHs (&PL_sv_no);
		829	PUSHs (fullname);
		830	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		831	PUTBACK;
		832	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		833	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		834	SPAGAIN;
		835	FREETMPS;
		836	LEAVE;
		837	PL_runops = runops_trace;
		838	}
		839
		840	if (oldcop != PL_curcop)
		841	{
		842	oldcop = PL_curcop;
		843
		844	if (PL_curcop != &PL_compiling)
		845	{
		846	SV **cb;
		847
		848	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		849	{
		850	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		851
		852	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		853	{
		854	runops_proc_t old_runops = PL_runops;
		855	dSP;
		856	GV *gv = CvGV (cx->blk_sub.cv);
		857	SV *fullname = sv_2mortal (newSV (0));
		858
		859	if (isGV (gv))
		860	gv_efullname3 (fullname, gv, 0);
		861
		862	PL_runops = RUNOPS_DEFAULT;
		863	ENTER;
		864	SAVETMPS;
		865	EXTEND (SP, 3);
		866	PUSHMARK (SP);
		867	PUSHs (&PL_sv_yes);
		868	PUSHs (fullname);
		869	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		870	PUTBACK;
		871	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		872	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		873	SPAGAIN;
		874	FREETMPS;
		875	LEAVE;
		876	PL_runops = runops_trace;
		877	}
		878
		879	oldcxix = cxstack_ix;
		880	}
		881
		882	if (cctx->flags & CC_TRACE_LINE)
		883	{
		884	dSP;
		885
		886	PL_runops = RUNOPS_DEFAULT;
		887	ENTER;
		888	SAVETMPS;
		889	EXTEND (SP, 3);
		890	PL_runops = RUNOPS_DEFAULT;
		891	PUSHMARK (SP);
		892	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		893	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		894	PUTBACK;
		895	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		896	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		897	SPAGAIN;
		898	FREETMPS;
		899	LEAVE;
		900	PL_runops = runops_trace;
		901	}
		902	}
		903	}
		904	}
		905	}
		906
		907	TAINT_NOT;
		908	return 0;
		909	}
		910
		911	/* inject a fake call to Coro::State::_cctx_init into the execution */
		912	/* _cctx_init should be careful, as it could be called at almost any time */
		913	/* during execution of a perl program */
527	static void NOINLINE	914	static void NOINLINE
528	prepare_cctx (coro_cctx *cctx)	915	cctx_prepare (pTHX_ coro_cctx *cctx)
529	{	916	{
530	dSP;	917	dSP;
531	LOGOP myop;	918	LOGOP myop;
532		919
		920	PL_top_env = &PL_start_env;
		921
		922	if (cctx->flags & CC_TRACE)
		923	PL_runops = runops_trace;
		924
533	Zero (&myop, 1, LOGOP);	925	Zero (&myop, 1, LOGOP);
534	myop.op_next = PL_op;	926	myop.op_next = PL_op;
535	myop.op_flags = OPf_WANT_VOID;	927	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
536
537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538		928
539	PUSHMARK (SP);	929	PUSHMARK (SP);
		930	EXTEND (SP, 2);
		931	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	932	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541	PUTBACK;	933	PUTBACK;
		934	PL_op = (OP *)&myop;
542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	935	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543	SPAGAIN;	936	SPAGAIN;
544	}	937	}
545		938
		939	/*
		940	* this is a _very_ stripped down perl interpreter ;)
		941	*/
546	static void	942	static void
547	coro_run (void *arg)	943	cctx_run (void *arg)
548	{	944	{
		945	dTHX;
		946
549	/* coro_run is the alternative epilogue of transfer() */	947	/* cctx_run is the alternative tail of transfer(), so unlock here. */
550	UNLOCK;	948	UNLOCK;
551		949
		950	/* we now skip the entersub that lead to transfer() */
		951	PL_op = PL_op->op_next;
		952
		953	/* inject a fake subroutine call to cctx_init */
		954	cctx_prepare (aTHX_ (coro_cctx *)arg);
		955
		956	/* somebody or something will hit me for both perl_run and PL_restartop */
		957	PL_restartop = PL_op;
		958	perl_run (PL_curinterp);
		959
552	/*	960	/*
553	* this is a _very_ stripped down perl interpreter ;)	961	* If perl-run returns we assume exit() was being called or the coro
		962	* fell off the end, which seems to be the only valid (non-bug)
		963	* reason for perl_run to return. We try to exit by jumping to the
		964	* bootstrap-time "top" top_env, as we cannot restore the "main"
		965	* coroutine as Coro has no such concept
554	*/	966	*/
555	PL_top_env = &PL_start_env;	967	PL_top_env = main_top_env;
556		968	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
557	/* inject call to cctx_init */
558	prepare_cctx ((coro_cctx *)arg);
559
560	/* somebody will hit me for both perl_run and PL_restartop */
561	perl_run (PL_curinterp);
562
563	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
564	abort ();
565	}	969	}
566		970
567	static coro_cctx *	971	static coro_cctx *
568	cctx_new ()	972	cctx_new ()
569	{	973	{
570	coro_cctx *cctx;	974	coro_cctx *cctx;
		975	void *stack_start;
		976	size_t stack_size;
571		977
572	++cctx_count;	978	++cctx_count;
573		979
574	New (0, cctx, 1, coro_cctx);	980	Newz (0, cctx, 1, coro_cctx);
575		981
576	#if HAVE_MMAP	982	#if HAVE_MMAP
577
578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	983	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
579	/* mmap suppsedly does allocate-on-write for us */	984	/* mmap supposedly does allocate-on-write for us */
580	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	985	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
581		986
582	if (cctx->sptr == (void *)-1)	987	if (cctx->sptr != (void *)-1)
583	{
584	perror ("FATAL: unable to mmap stack for coroutine");
585	_exit (EXIT_FAILURE);
586	}	988	{
587
588	# if STACKGUARD	989	# if CORO_STACKGUARD
589	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	990	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
590	# endif	991	# endif
		992	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		993	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		994	cctx->flags \|= CC_MAPPED;
		995	}
		996	else
		997	#endif
		998	{
		999	cctx->ssize = coro_stacksize * (long)sizeof (long);
		1000	New (0, cctx->sptr, coro_stacksize, long);
591		1001
592	#else
593
594	cctx->ssize = STACKSIZE * (long)sizeof (long);
595	New (0, cctx->sptr, STACKSIZE, long);
596
597	if (!cctx->sptr)	1002	if (!cctx->sptr)
598	{	1003	{
599	perror ("FATAL: unable to malloc stack for coroutine");	1004	perror ("FATAL: unable to allocate stack for coroutine");
600	_exit (EXIT_FAILURE);	1005	_exit (EXIT_FAILURE);
601	}	1006	}
602		1007
603	#endif	1008	stack_start = cctx->sptr;
		1009	stack_size = cctx->ssize;
		1010	}
604		1011
605	#if USE_VALGRIND	1012	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
606	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	1013	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
607	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
608	cctx->ssize + (char *)cctx->sptr
609	);
610	#endif
611
612	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
613		1014
614	return cctx;	1015	return cctx;
615	}	1016	}
616		1017
617	static void	1018	static void
618	cctx_free (coro_cctx *cctx)	1019	cctx_destroy (coro_cctx *cctx)
619	{	1020	{
620	if (!cctx)	1021	if (!cctx)
621	return;	1022	return;
622		1023
623	--cctx_count;	1024	--cctx_count;
624		1025
625	#if USE_VALGRIND	1026	#if CORO_USE_VALGRIND
626	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1027	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
627	#endif	1028	#endif
628		1029
629	#if HAVE_MMAP	1030	#if HAVE_MMAP
		1031	if (cctx->flags & CC_MAPPED)
630	munmap (cctx->sptr, cctx->ssize);	1032	munmap (cctx->sptr, cctx->ssize);
		1033	else
		1034	#endif
		1035	Safefree (cctx->sptr);
		1036
		1037	Safefree (cctx);
		1038	}
		1039
		1040	/* wether this cctx should be destructed */
		1041	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1042
		1043	static coro_cctx *
		1044	cctx_get (pTHX_ int gimme)
		1045	{
		1046	while (expect_true (cctx_first[gimme]))
		1047	{
		1048	coro_cctx *cctx = cctx_first[gimme];
		1049	cctx_first[gimme] = cctx->next;
		1050	--cctx_idle[gimme];
		1051
		1052	if (expect_true (!CCTX_EXPIRED (cctx)))
		1053	return cctx;
		1054
		1055	cctx_destroy (cctx);
		1056	}
		1057
		1058	assert (!gimme);
		1059	return cctx_new ();
		1060	}
		1061
		1062	static void
		1063	cctx_put (coro_cctx *cctx, int gimme)
		1064	{
		1065	/* free another cctx if overlimit */
		1066	if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX))
		1067	{
		1068	coro_cctx *first = cctx_first[gimme];
		1069	cctx_first[gimme] = first->next;
		1070	--cctx_idle[gimme];
		1071
		1072	cctx_destroy (first);
		1073	}
		1074
		1075	++cctx_idle[gimme];
		1076	cctx->next = cctx_first[gimme];
		1077	cctx_first[gimme] = cctx;
		1078	}
		1079
		1080	/ coroutine switching ***************************************************/
		1081
		1082	static void
		1083	transfer_check (pTHX_ struct coro prev, struct coro next)
		1084	{
		1085	if (expect_true (prev != next))
		1086	{
		1087	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1088	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1089
		1090	if (expect_false (next->flags & CF_RUNNING))
		1091	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1092
		1093	if (expect_false (next->flags & CF_DESTROYED))
		1094	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1095
		1096	if (
		1097	#if PERL_VERSION_ATLEAST (5,9,0)
		1098	expect_false (PL_parser)
631	#else	1099	#else
632	Safefree (cctx->sptr);	1100	expect_false (PL_lex_state != LEX_NOTPARSING)
633	#endif	1101	#endif
634		1102	)
635	Safefree (cctx);	1103	croak ("Coro::State::transfer called while parsing, but this is not supported");
636	}
637
638	static coro_cctx *
639	cctx_get ()
640	{
641	coro_cctx *cctx;
642
643	if (cctx_first)
644	{
645	--cctx_idle;
646	cctx = cctx_first;
647	cctx_first = cctx->next;
648	}
649	else
650	{
651	cctx = cctx_new ();
652	PL_op = PL_op->op_next;
653	}	1104	}
654
655	return cctx;
656	}	1105	}
657		1106
658	static void	1107	/* always use the TRANSFER macro */
659	cctx_put (coro_cctx *cctx)
660	{
661	++cctx_idle;
662	cctx->next = cctx_first;
663	cctx_first = cctx;
664	}
665
666	/* never call directly, always through the coro_state_transfer global variable */
667	static void NOINLINE	1108	static void NOINLINE
668	transfer (struct coro prev, struct coro next, int flags)	1109	transfer (pTHX_ struct coro prev, struct coro next)
669	{	1110	{
670	dSTACKLEVEL;	1111	dSTACKLEVEL;
671		1112
672	/* sometimes transfer is only called to set idle_sp */	1113	/* sometimes transfer is only called to set idle_sp */
673	if (flags == TRANSFER_SET_STACKLEVEL)	1114	if (expect_false (!next))
		1115	{
674	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1116	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1117	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1118	}
675	else if (prev != next)	1119	else if (expect_true (prev != next))
676	{	1120	{
677	coro_cctx *prev__cctx;	1121	coro_cctx *prev__cctx;
678		1122
679	if (!prev->cctx)	1123	if (expect_false (prev->flags & CF_NEW))
680	{	1124	{
681	/* create a new empty context */	1125	/* create a new empty context */
682	Newz (0, prev->cctx, 1, coro_cctx);	1126	Newz (0, prev->cctx, 1, coro_cctx);
683	prev->cctx->inuse = 1;	1127	prev->flags &= ~CF_NEW;
684	prev->flags \|= CF_RUNNING;	1128	prev->flags \|= CF_RUNNING;
685	}	1129	}
686
687	assert ( prev->flags & CF_RUNNING);
688	assert (!next->flags & CF_RUNNING);
689		1130
690	prev->flags &= ~CF_RUNNING;	1131	prev->flags &= ~CF_RUNNING;
691	next->flags \|= CF_RUNNING;	1132	next->flags \|= CF_RUNNING;
692		1133
693	LOCK;	1134	LOCK;
694		1135
695	if (next->mainstack)	1136	if (expect_false (next->flags & CF_NEW))
696	{	1137	{
697	/* coroutine already started */	1138	/* need to start coroutine */
698	SAVE (prev, flags);	1139	next->flags &= ~CF_NEW;
699	LOAD (next);	1140	/* first get rid of the old state */
		1141	save_perl (aTHX_ prev);
		1142	/* setup coroutine call */
		1143	coro_setup (aTHX_ next);
700	}	1144	}
701	else	1145	else
702	{	1146	{
703	/* need to start coroutine */	1147	/* coroutine already started */
704	/* first get rid of the old state */	1148	save_perl (aTHX_ prev);
705	SAVE (prev, -1);	1149	load_perl (aTHX_ next);
706	/* setup coroutine call */
707	setup_coro (next);
708	/* need a stack */
709	assert (!next->stack);
710	next->cctx = 0;
711	}	1150	}
712		1151
713	prev__cctx = prev->cctx;	1152	prev__cctx = prev->cctx;
714		1153
715	/* possibly "free" the cctx */	1154	/* possibly "free" the cctx */
716	if (prev__cctx->idle_sp == STACKLEVEL)	1155	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
717	{	1156	{
718	assert (PL_top_env == prev__cctx->top_env);//D	1157	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
719	cctx_put (prev__cctx);	1158	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1159
720	prev->cctx = 0;	1160	prev->cctx = 0;
		1161
		1162	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1163	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1164	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1165	if (!next->cctx)
		1166	next->cctx = cctx_get (aTHX_ next->gimme);
		1167
		1168	cctx_put (prev__cctx, prev->gimme);
721	}	1169	}
722		1170
		1171	++next->usecount;
		1172
723	if (!next->cctx)	1173	if (expect_true (!next->cctx))
724	next->cctx = cctx_get ();	1174	next->cctx = cctx_get (aTHX_ next->gimme);
725		1175
726	if (prev__cctx != next->cctx)	1176	if (expect_false (prev__cctx != next->cctx))
727	{	1177	{
728	assert ( prev__cctx->inuse);
729	assert (!next->cctx->inuse);
730
731	prev__cctx->inuse = 0;
732	next->cctx->inuse = 1;
733
734	prev__cctx->top_env = PL_top_env;	1178	prev__cctx->top_env = PL_top_env;
735	PL_top_env = next->cctx->top_env;	1179	PL_top_env = next->cctx->top_env;
736	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1180	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
737	}	1181	}
738		1182
739	free_coro_mortal ();	1183	free_coro_mortal (aTHX);
740
741	UNLOCK;	1184	UNLOCK;
		1185
		1186	if (expect_false (prev->throw \|\| next->throw))
		1187	{
		1188	struct coro *coro = SvSTATE (coro_current);
		1189
		1190	if (coro->throw)
		1191	{
		1192	SV *exception = coro->throw;
		1193	coro->throw = 0;
		1194	sv_setsv (ERRSV, exception);
		1195	croak (0);
		1196	}
		1197	}
742	}	1198	}
743	}	1199	}
744		1200
745	struct transfer_args	1201	struct transfer_args
746	{	1202	{
747	struct coro prev, next;	1203	struct coro prev, next;
748	int flags;
749	};	1204	};
750		1205
751	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1206	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1207	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
752		1208
		1209	/ high level stuff ******************************************************/
		1210
753	static void	1211	static int
754	coro_state_destroy (struct coro *coro)	1212	coro_state_destroy (pTHX_ struct coro *coro)
755	{	1213	{
756	if (coro->refcnt--)	1214	if (coro->flags & CF_DESTROYED)
757	return;	1215	return 0;
		1216
		1217	coro->flags \|= CF_DESTROYED;
		1218
		1219	if (coro->flags & CF_READY)
		1220	{
		1221	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1222	/* alternative: look through all ready queues and remove the coro */
		1223	LOCK;
		1224	--coro_nready;
		1225	UNLOCK;
		1226	}
		1227	else
		1228	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
758		1229
759	if (coro->mainstack && coro->mainstack != main_mainstack)	1230	if (coro->mainstack && coro->mainstack != main_mainstack)
760	{	1231	{
761	struct coro temp;	1232	struct coro temp;
762		1233
763	SAVE ((&temp), TRANSFER_SAVE_ALL);	1234	if (coro->flags & CF_RUNNING)
764	LOAD (coro);	1235	croak ("FATAL: tried to destroy currently running coroutine");
765		1236
766	coro_destroy_stacks ();	1237	save_perl (aTHX_ &temp);
		1238	load_perl (aTHX_ coro);
767		1239
768	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1240	coro_destroy (aTHX_ coro);
769		1241
		1242	load_perl (aTHX_ &temp);
		1243
770	coro->mainstack = 0;	1244	coro->slot = 0;
771	}	1245	}
772		1246
773	cctx_free (coro->cctx);	1247	cctx_destroy (coro->cctx);
774	SvREFCNT_dec (coro->args);	1248	SvREFCNT_dec (coro->args);
775	Safefree (coro);	1249
		1250	if (coro->next) coro->next->prev = coro->prev;
		1251	if (coro->prev) coro->prev->next = coro->next;
		1252	if (coro == coro_first) coro_first = coro->next;
		1253
		1254	return 1;
776	}	1255	}
777		1256
778	static int	1257	static int
779	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1258	coro_state_free (pTHX_ SV sv, MAGIC mg)
780	{	1259	{
781	struct coro coro = (struct coro )mg->mg_ptr;	1260	struct coro coro = (struct coro )mg->mg_ptr;
782	mg->mg_ptr = 0;	1261	mg->mg_ptr = 0;
783		1262
		1263	coro->hv = 0;
		1264
		1265	if (--coro->refcnt < 0)
		1266	{
784	coro_state_destroy (coro);	1267	coro_state_destroy (aTHX_ coro);
		1268	Safefree (coro);
		1269	}
785		1270
786	return 0;	1271	return 0;
787	}	1272	}
788		1273
789	static int	1274	static int
…		…
796	return 0;	1281	return 0;
797	}	1282	}
798		1283
799	static MGVTBL coro_state_vtbl = {	1284	static MGVTBL coro_state_vtbl = {
800	0, 0, 0, 0,	1285	0, 0, 0, 0,
801	coro_state_clear,	1286	coro_state_free,
802	0,	1287	0,
803	#ifdef MGf_DUP	1288	#ifdef MGf_DUP
804	coro_state_dup,	1289	coro_state_dup,
805	#else	1290	#else
806	# define MGf_DUP 0	1291	# define MGf_DUP 0
807	#endif	1292	#endif
808	};	1293	};
809		1294
810	static struct coro *
811	SvSTATE (SV *coro)
812	{
813	HV *stash;
814	MAGIC *mg;
815
816	if (SvROK (coro))
817	coro = SvRV (coro);
818
819	stash = SvSTASH (coro);
820	if (stash != coro_stash && stash != coro_state_stash)
821	{
822	/* very slow, but rare, check */
823	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
824	croak ("Coro::State object required");
825	}
826
827	mg = SvMAGIC (coro);
828	assert (mg->mg_type == PERL_MAGIC_ext);
829	return (struct coro *)mg->mg_ptr;
830	}
831
832	static void	1295	static void
833	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1296	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
834	{	1297	{
835	ta->prev = SvSTATE (prev);	1298	ta->prev = SvSTATE (prev_sv);
836	ta->next = SvSTATE (next);	1299	ta->next = SvSTATE (next_sv);
837	ta->flags = flags;	1300	TRANSFER_CHECK (*ta);
838	}	1301	}
839		1302
840	static void	1303	static void
841	api_transfer (SV prev, SV next, int flags)	1304	api_transfer (SV prev_sv, SV next_sv)
842	{	1305	{
843	dTHX;	1306	dTHX;
844	struct transfer_args ta;	1307	struct transfer_args ta;
845		1308
846	prepare_transfer (&ta, prev, next, flags);	1309	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
847	TRANSFER (ta);	1310	TRANSFER (ta);
848	}	1311	}
849		1312
850	/ Coro ******************************************************************/	1313	/ Coro ******************************************************************/
851		1314
852	#define PRIO_MAX 3
853	#define PRIO_HIGH 1
854	#define PRIO_NORMAL 0
855	#define PRIO_LOW -1
856	#define PRIO_IDLE -3
857	#define PRIO_MIN -4
858
859	/* for Coro.pm */
860	static GV coro_current, coro_idle;
861	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
862	static int coro_nready;
863
864	static void	1315	static void
865	coro_enq (SV *sv)	1316	coro_enq (pTHX_ SV *coro_sv)
866	{	1317	{
867	int prio;
868
869	if (SvTYPE (sv) != SVt_PVHV)
870	croak ("Coro::ready tried to enqueue something that is not a coroutine");
871
872	prio = SvSTATE (sv)->prio;
873
874	av_push (coro_ready [prio - PRIO_MIN], sv);	1318	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
875	coro_nready++;
876	}	1319	}
877		1320
878	static SV *	1321	static SV *
879	coro_deq (int min_prio)	1322	coro_deq (pTHX_ int min_prio)
880	{	1323	{
881	int prio = PRIO_MAX - PRIO_MIN;	1324	int prio = PRIO_MAX - PRIO_MIN;
882		1325
883	min_prio -= PRIO_MIN;	1326	min_prio -= PRIO_MIN;
884	if (min_prio < 0)	1327	if (min_prio < 0)
885	min_prio = 0;	1328	min_prio = 0;
886		1329
887	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1330	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
888	if (AvFILLp (coro_ready [prio]) >= 0)	1331	if (AvFILLp (coro_ready [prio]) >= 0)
889	{
890	coro_nready--;
891	return av_shift (coro_ready [prio]);	1332	return av_shift (coro_ready [prio]);
892	}
893		1333
894	return 0;	1334	return 0;
895	}	1335	}
896		1336
897	static int	1337	static int
898	api_ready (SV *coro_sv)	1338	api_ready (SV *coro_sv)
899	{	1339	{
		1340	dTHX;
900	struct coro *coro;	1341	struct coro *coro;
901		1342
902	if (SvROK (coro_sv))	1343	if (SvROK (coro_sv))
903	coro_sv = SvRV (coro_sv);	1344	coro_sv = SvRV (coro_sv);
904		1345
905	coro = SvSTATE (coro_sv);	1346	coro = SvSTATE (coro_sv);
		1347
906	if (coro->flags & CF_READY)	1348	if (coro->flags & CF_READY)
907	return 0;	1349	return 0;
908		1350
909	coro->flags \|= CF_READY;	1351	coro->flags \|= CF_READY;
910		1352
911	LOCK;	1353	LOCK;
912	coro_enq (SvREFCNT_inc (coro_sv));	1354	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1355	++coro_nready;
913	UNLOCK;	1356	UNLOCK;
914		1357
915	return 1;	1358	return 1;
916	}	1359	}
917		1360
918	static int	1361	static int
919	api_is_ready (SV *coro_sv)	1362	api_is_ready (SV *coro_sv)
920	{	1363	{
921	struct coro *coro;	1364	dTHX;
922
923	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1365	return !!(SvSTATE (coro_sv)->flags & CF_READY);
924	}	1366	}
925		1367
926	static void	1368	static void
927	prepare_schedule (struct transfer_args *ta)	1369	prepare_schedule (pTHX_ struct transfer_args *ta)
928	{	1370	{
929	SV current, prev, *next;	1371	SV prev_sv, next_sv;
930
931	current = GvSV (coro_current);
932		1372
933	for (;;)	1373	for (;;)
934	{	1374	{
935	LOCK;	1375	LOCK;
936	next = coro_deq (PRIO_MIN);	1376	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1377
		1378	/* nothing to schedule: call the idle handler */
		1379	if (expect_false (!next_sv))
		1380	{
		1381	dSP;
		1382	UNLOCK;
		1383
		1384	ENTER;
		1385	SAVETMPS;
		1386
		1387	PUSHMARK (SP);
		1388	PUTBACK;
		1389	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1390
		1391	FREETMPS;
		1392	LEAVE;
		1393	continue;
		1394	}
		1395
		1396	ta->next = SvSTATE (next_sv);
		1397
		1398	/* cannot transfer to destroyed coros, skip and look for next */
		1399	if (expect_false (ta->next->flags & CF_DESTROYED))
		1400	{
		1401	UNLOCK;
		1402	SvREFCNT_dec (next_sv);
		1403	/* coro_nready is already taken care of by destroy */
		1404	continue;
		1405	}
		1406
		1407	--coro_nready;
937	UNLOCK;	1408	UNLOCK;
938
939	if (next)
940	break;	1409	break;
941
942	{
943	dSP;
944
945	ENTER;
946	SAVETMPS;
947
948	PUSHMARK (SP);
949	PUTBACK;
950	call_sv (GvSV (coro_idle), G_DISCARD);
951
952	FREETMPS;
953	LEAVE;
954	}	1410	}
955	}
956
957	prev = SvRV (current);
958	SvRV (current) = next;
959		1411
960	/* free this only after the transfer */	1412	/* free this only after the transfer */
		1413	prev_sv = SvRV (coro_current);
		1414	ta->prev = SvSTATE (prev_sv);
		1415	TRANSFER_CHECK (*ta);
		1416	assert (ta->next->flags & CF_READY);
		1417	ta->next->flags &= ~CF_READY;
		1418	SvRV_set (coro_current, next_sv);
		1419
961	LOCK;	1420	LOCK;
962	free_coro_mortal ();	1421	free_coro_mortal (aTHX);
		1422	coro_mortal = prev_sv;
963	UNLOCK;	1423	UNLOCK;
964	coro_mortal = prev;
965
966	ta->prev = SvSTATE (prev);
967	ta->next = SvSTATE (next);
968	ta->flags = TRANSFER_SAVE_ALL;
969
970	ta->next->flags &= ~CF_READY;
971	}	1424	}
972		1425
973	static void	1426	static void
974	prepare_cede (struct transfer_args *ta)	1427	prepare_cede (pTHX_ struct transfer_args *ta)
975	{	1428	{
976	api_ready (GvSV (coro_current));	1429	api_ready (coro_current);
977
978	prepare_schedule (ta);	1430	prepare_schedule (aTHX_ ta);
		1431	}
		1432
		1433	static int
		1434	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1435	{
		1436	if (coro_nready)
		1437	{
		1438	SV *prev = SvRV (coro_current);
		1439	prepare_schedule (aTHX_ ta);
		1440	api_ready (prev);
		1441	return 1;
		1442	}
		1443	else
		1444	return 0;
979	}	1445	}
980		1446
981	static void	1447	static void
982	api_schedule (void)	1448	api_schedule (void)
983	{	1449	{
984	dTHX;	1450	dTHX;
985	struct transfer_args ta;	1451	struct transfer_args ta;
986		1452
987	prepare_schedule (&ta);	1453	prepare_schedule (aTHX_ &ta);
988	TRANSFER (ta);	1454	TRANSFER (ta);
989	}	1455	}
990		1456
991	static void	1457	static int
992	api_cede (void)	1458	api_cede (void)
993	{	1459	{
994	dTHX;	1460	dTHX;
995	struct transfer_args ta;	1461	struct transfer_args ta;
996		1462
997	prepare_cede (&ta);	1463	prepare_cede (aTHX_ &ta);
		1464
		1465	if (expect_true (ta.prev != ta.next))
		1466	{
998	TRANSFER (ta);	1467	TRANSFER (ta);
		1468	return 1;
		1469	}
		1470	else
		1471	return 0;
999	}	1472	}
1000		1473
		1474	static int
		1475	api_cede_notself (void)
		1476	{
		1477	dTHX;
		1478	struct transfer_args ta;
		1479
		1480	if (prepare_cede_notself (aTHX_ &ta))
		1481	{
		1482	TRANSFER (ta);
		1483	return 1;
		1484	}
		1485	else
		1486	return 0;
		1487	}
		1488
		1489	static void
		1490	api_trace (SV *coro_sv, int flags)
		1491	{
		1492	dTHX;
		1493	struct coro *coro = SvSTATE (coro_sv);
		1494
		1495	if (flags & CC_TRACE)
		1496	{
		1497	if (!coro->cctx)
		1498	coro->cctx = cctx_new ();
		1499	else if (!(coro->cctx->flags & CC_TRACE))
		1500	croak ("cannot enable tracing on coroutine with custom stack");
		1501
		1502	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1503	}
		1504	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1505	{
		1506	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1507
		1508	if (coro->flags & CF_RUNNING)
		1509	PL_runops = RUNOPS_DEFAULT;
		1510	else
		1511	coro->slot->runops = RUNOPS_DEFAULT;
		1512	}
		1513	}
		1514
1001	MODULE = Coro::State PACKAGE = Coro::State	1515	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1002		1516
1003	PROTOTYPES: DISABLE	1517	PROTOTYPES: DISABLE
1004		1518
1005	BOOT:	1519	BOOT:
1006	{	1520	{
1007	#ifdef USE_ITHREADS	1521	#ifdef USE_ITHREADS
1008	MUTEX_INIT (&coro_mutex);	1522	MUTEX_INIT (&coro_mutex);
1009	#endif	1523	#endif
1010	BOOT_PAGESIZE;	1524	BOOT_PAGESIZE;
1011		1525
		1526	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1527	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1528
		1529	hv_sig = coro_get_hv ("SIG", TRUE);
		1530	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1531	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1532
		1533	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1534	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1535
1012	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1536	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1013		1537
1014	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1538	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1015	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1539	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1016	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1540	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1541	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1017		1542
1018	main_mainstack = PL_mainstack;	1543	main_mainstack = PL_mainstack;
		1544	main_top_env = PL_top_env;
		1545
		1546	while (main_top_env->je_prev)
		1547	main_top_env = main_top_env->je_prev;
1019		1548
1020	coroapi.ver = CORO_API_VERSION;	1549	coroapi.ver = CORO_API_VERSION;
		1550	coroapi.rev = CORO_API_REVISION;
1021	coroapi.transfer = api_transfer;	1551	coroapi.transfer = api_transfer;
1022		1552
1023	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1553	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1024	}	1554	}
1025		1555
…		…
1030	struct coro *coro;	1560	struct coro *coro;
1031	HV *hv;	1561	HV *hv;
1032	int i;	1562	int i;
1033		1563
1034	Newz (0, coro, 1, struct coro);	1564	Newz (0, coro, 1, struct coro);
1035	coro->args = newAV ();	1565	coro->args = newAV ();
		1566	coro->flags = CF_NEW;
1036		1567
		1568	if (coro_first) coro_first->prev = coro;
		1569	coro->next = coro_first;
		1570	coro_first = coro;
		1571
1037	hv = newHV ();	1572	coro->hv = hv = newHV ();
1038	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1573	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1039	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1574	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1040		1575
		1576	av_extend (coro->args, items - 1);
1041	for (i = 1; i < items; i++)	1577	for (i = 1; i < items; i++)
1042	av_push (coro->args, newSVsv (ST (i)));	1578	av_push (coro->args, newSVsv (ST (i)));
1043	}	1579	}
1044	OUTPUT:	1580	OUTPUT:
1045	RETVAL	1581	RETVAL
1046		1582
		1583	# these not obviously related functions are all rolled into the same xs
		1584	# function to increase chances that they all will call transfer with the same
		1585	# stack offset
1047	void	1586	void
1048	_set_stacklevel (...)	1587	_set_stacklevel (...)
1049	ALIAS:	1588	ALIAS:
1050	Coro::State::transfer = 1	1589	Coro::State::transfer = 1
1051	Coro::schedule = 2	1590	Coro::schedule = 2
1052	Coro::cede = 3	1591	Coro::cede = 3
1053	Coro::Cont::yield = 4	1592	Coro::cede_notself = 4
1054	CODE:	1593	CODE:
1055	{	1594	{
1056	struct transfer_args ta;	1595	struct transfer_args ta;
1057		1596
1058	switch (ix)	1597	switch (ix)
1059	{	1598	{
1060	case 0:	1599	case 0:
1061	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1600	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1062	ta.next = 0;	1601	ta.next = 0;
1063	ta.flags = TRANSFER_SET_STACKLEVEL;
1064	break;	1602	break;
1065		1603
1066	case 1:	1604	case 1:
1067	if (items != 3)	1605	if (items != 2)
1068	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1606	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1069		1607
1070	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1608	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1071	break;	1609	break;
1072		1610
1073	case 2:	1611	case 2:
1074	prepare_schedule (&ta);	1612	prepare_schedule (aTHX_ &ta);
1075	break;	1613	break;
1076		1614
1077	case 3:	1615	case 3:
1078	prepare_cede (&ta);	1616	prepare_cede (aTHX_ &ta);
1079	break;	1617	break;
1080		1618
1081	case 4:	1619	case 4:
1082	{	1620	if (!prepare_cede_notself (aTHX_ &ta))
1083	SV *yieldstack;	1621	XSRETURN_EMPTY;
1084	SV *sv;
1085	AV *defav = GvAV (PL_defgv);
1086		1622
1087	yieldstack = *hv_fetch (
1088	(HV *)SvRV (GvSV (coro_current)),
1089	"yieldstack", sizeof ("yieldstack") - 1,
1090	0
1091	);
1092
1093	/* set up @_ -- ugly */
1094	av_clear (defav);
1095	av_fill (defav, items - 1);
1096	while (items--)
1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
1098
1099	sv = av_pop ((AV *)SvRV (yieldstack));
1100	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1101	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1102	ta.flags = 0;
1103	SvREFCNT_dec (sv);
1104	}
1105	break;	1623	break;
1106
1107	}	1624	}
1108		1625
		1626	BARRIER;
		1627	PUTBACK;
1109	TRANSFER (ta);	1628	TRANSFER (ta);
		1629	SPAGAIN; /* might be the sp of a different coroutine now */
		1630	/* be extra careful not to ever do anything after TRANSFER */
1110	}	1631	}
1111		1632
1112	void	1633	bool
1113	_clone_state_from (SV dst, SV src)	1634	_destroy (SV *coro_sv)
1114	CODE:	1635	CODE:
1115	{	1636	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1116	struct coro *coro_src = SvSTATE (src);	1637	OUTPUT:
1117		1638	RETVAL
1118	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1119
1120	++coro_src->refcnt;
1121	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1122	}
1123		1639
1124	void	1640	void
1125	_exit (code)	1641	_exit (code)
1126	int code	1642	int code
1127	PROTOTYPE: $	1643	PROTOTYPE: $
1128	CODE:	1644	CODE:
1129	_exit (code);	1645	_exit (code);
1130		1646
1131	int	1647	int
		1648	cctx_stacksize (int new_stacksize = 0)
		1649	CODE:
		1650	RETVAL = coro_stacksize;
		1651	if (new_stacksize)
		1652	coro_stacksize = new_stacksize;
		1653	OUTPUT:
		1654	RETVAL
		1655
		1656	int
1132	cctx_count ()	1657	cctx_count ()
1133	CODE:	1658	CODE:
1134	RETVAL = cctx_count;	1659	RETVAL = cctx_count;
1135	OUTPUT:	1660	OUTPUT:
1136	RETVAL	1661	RETVAL
1137		1662
1138	int	1663	int
1139	cctx_idle ()	1664	cctx_idle ()
1140	CODE:	1665	CODE:
1141	RETVAL = cctx_idle;	1666	RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2];
1142	OUTPUT:	1667	OUTPUT:
1143	RETVAL	1668	RETVAL
1144		1669
		1670	void
		1671	list ()
		1672	PPCODE:
		1673	{
		1674	struct coro *coro;
		1675	for (coro = coro_first; coro; coro = coro->next)
		1676	if (coro->hv)
		1677	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1678	}
		1679
		1680	void
		1681	call (Coro::State coro, SV *coderef)
		1682	ALIAS:
		1683	eval = 1
		1684	CODE:
		1685	{
		1686	if (coro->mainstack)
		1687	{
		1688	struct coro temp;
		1689
		1690	if (!(coro->flags & CF_RUNNING))
		1691	{
		1692	save_perl (aTHX_ &temp);
		1693	load_perl (aTHX_ coro);
		1694	}
		1695
		1696	{
		1697	dSP;
		1698	ENTER;
		1699	SAVETMPS;
		1700	PUTBACK;
		1701	PUSHSTACK;
		1702	PUSHMARK (SP);
		1703
		1704	if (ix)
		1705	eval_sv (coderef, 0);
		1706	else
		1707	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1708
		1709	POPSTACK;
		1710	FREETMPS;
		1711	LEAVE;
		1712	PUTBACK;
		1713	}
		1714
		1715	if (!(coro->flags & CF_RUNNING))
		1716	{
		1717	save_perl (aTHX_ coro);
		1718	load_perl (aTHX_ &temp);
		1719	}
		1720	}
		1721	}
		1722
		1723	SV *
		1724	is_ready (Coro::State coro)
		1725	PROTOTYPE: $
		1726	ALIAS:
		1727	is_ready = CF_READY
		1728	is_running = CF_RUNNING
		1729	is_new = CF_NEW
		1730	is_destroyed = CF_DESTROYED
		1731	CODE:
		1732	RETVAL = boolSV (coro->flags & ix);
		1733	OUTPUT:
		1734	RETVAL
		1735
		1736	void
		1737	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1738
		1739	SV *
		1740	has_stack (Coro::State coro)
		1741	PROTOTYPE: $
		1742	CODE:
		1743	RETVAL = boolSV (!!coro->cctx);
		1744	OUTPUT:
		1745	RETVAL
		1746
		1747	int
		1748	is_traced (Coro::State coro)
		1749	PROTOTYPE: $
		1750	CODE:
		1751	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1752	OUTPUT:
		1753	RETVAL
		1754
		1755	IV
		1756	rss (Coro::State coro)
		1757	PROTOTYPE: $
		1758	ALIAS:
		1759	usecount = 1
		1760	CODE:
		1761	switch (ix)
		1762	{
		1763	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1764	case 1: RETVAL = coro->usecount; break;
		1765	}
		1766	OUTPUT:
		1767	RETVAL
		1768
		1769
1145	MODULE = Coro::State PACKAGE = Coro	1770	MODULE = Coro::State PACKAGE = Coro
1146		1771
1147	BOOT:	1772	BOOT:
1148	{	1773	{
1149	int i;	1774	int i;
1150		1775
		1776	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1777	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1778	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1779
		1780	coro_current = coro_get_sv ("Coro::current", FALSE);
		1781	SvREADONLY_on (coro_current);
		1782
1151	coro_stash = gv_stashpv ("Coro", TRUE);	1783	coro_stash = gv_stashpv ("Coro", TRUE);
1152		1784
1153	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1785	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1154	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1786	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1155	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1787	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1156	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1788	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1157	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1789	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1158	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1790	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1159		1791
1160	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1161	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1162
1163	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1792	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1164	coro_ready[i] = newAV ();	1793	coro_ready[i] = newAV ();
1165		1794
1166	{	1795	{
1167	SV *sv = perl_get_sv("Coro::API", 1);	1796	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1797	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1168		1798
1169	coroapi.schedule = api_schedule;	1799	coroapi.schedule = api_schedule;
1170	coroapi.cede = api_cede;	1800	coroapi.cede = api_cede;
		1801	coroapi.cede_notself = api_cede_notself;
1171	coroapi.ready = api_ready;	1802	coroapi.ready = api_ready;
1172	coroapi.is_ready = api_is_ready;	1803	coroapi.is_ready = api_is_ready;
1173	coroapi.nready = &coro_nready;	1804	coroapi.nready = &coro_nready;
1174	coroapi.current = coro_current;	1805	coroapi.current = coro_current;
1175		1806
1176	GCoroAPI = &coroapi;	1807	GCoroAPI = &coroapi;
1177	sv_setiv (sv, (IV)&coroapi);	1808	sv_setiv (sv, (IV)&coroapi);
1178	SvREADONLY_on (sv);	1809	SvREADONLY_on (sv);
1179	}	1810	}
1180	}	1811	}
		1812
		1813	void
		1814	_set_current (SV *current)
		1815	PROTOTYPE: $
		1816	CODE:
		1817	SvREFCNT_dec (SvRV (coro_current));
		1818	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1181		1819
1182	int	1820	int
1183	prio (Coro::State coro, int newprio = 0)	1821	prio (Coro::State coro, int newprio = 0)
1184	ALIAS:	1822	ALIAS:
1185	nice = 1	1823	nice = 1
…		…
1188	RETVAL = coro->prio;	1826	RETVAL = coro->prio;
1189		1827
1190	if (items > 1)	1828	if (items > 1)
1191	{	1829	{
1192	if (ix)	1830	if (ix)
1193	newprio += coro->prio;	1831	newprio = coro->prio - newprio;
1194		1832
1195	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1833	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1196	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1834	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1197		1835
1198	coro->prio = newprio;	1836	coro->prio = newprio;
1199	}	1837	}
1200	}	1838	}
		1839	OUTPUT:
		1840	RETVAL
1201		1841
1202	SV *	1842	SV *
1203	ready (SV *self)	1843	ready (SV *self)
1204	PROTOTYPE: $	1844	PROTOTYPE: $
1205	CODE:	1845	CODE:
1206	RETVAL = boolSV (api_ready (self));	1846	RETVAL = boolSV (api_ready (self));
1207	OUTPUT:	1847	OUTPUT:
1208	RETVAL	1848	RETVAL
1209		1849
1210	SV *
1211	is_ready (SV *self)
1212	PROTOTYPE: $
1213	CODE:
1214	RETVAL = boolSV (api_is_ready (self));
1215	OUTPUT:
1216	RETVAL
1217
1218	int	1850	int
1219	nready (...)	1851	nready (...)
1220	PROTOTYPE:	1852	PROTOTYPE:
1221	CODE:	1853	CODE:
1222	RETVAL = coro_nready;	1854	RETVAL = coro_nready;
1223	OUTPUT:	1855	OUTPUT:
1224	RETVAL	1856	RETVAL
1225		1857
		1858	void
		1859	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1860	PROTOTYPE: $;$
		1861	CODE:
		1862	SvREFCNT_dec (self->throw);
		1863	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1864
		1865	# for async_pool speedup
		1866	void
		1867	_pool_1 (SV *cb)
		1868	CODE:
		1869	{
		1870	struct coro *coro = SvSTATE (coro_current);
		1871	HV hv = (HV )SvRV (coro_current);
		1872	AV *defav = GvAV (PL_defgv);
		1873	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1874	AV *invoke_av;
		1875	int i, len;
		1876
		1877	if (!invoke)
		1878	croak ("\3async_pool terminate\2\n");
		1879
		1880	SvREFCNT_dec (coro->saved_deffh);
		1881	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1882
		1883	hv_store (hv, "desc", sizeof ("desc") - 1,
		1884	newSVpvn (strpair ("[async_pool]")), 0);
		1885
		1886	invoke_av = (AV *)SvRV (invoke);
		1887	len = av_len (invoke_av);
		1888
		1889	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1890
		1891	if (len > 0)
		1892	{
		1893	av_fill (defav, len - 1);
		1894	for (i = 0; i < len; ++i)
		1895	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1896	}
		1897
		1898	SvREFCNT_dec (invoke);
		1899	}
		1900
		1901	void
		1902	_pool_2 (SV *cb)
		1903	CODE:
		1904	{
		1905	struct coro *coro = SvSTATE (coro_current);
		1906
		1907	sv_setsv (cb, &PL_sv_undef);
		1908
		1909	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1910	coro->saved_deffh = 0;
		1911
		1912	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1913	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1914	croak ("\3async_pool terminate\2\n");
		1915
		1916	av_clear (GvAV (PL_defgv));
		1917	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1918	newSVpvn (strpair ("[async_pool idle]")), 0);
		1919
		1920	coro->prio = 0;
		1921
		1922	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1923	api_trace (coro_current, 0);
		1924
		1925	av_push (av_async_pool, newSVsv (coro_current));
		1926	}
		1927
		1928
1226	MODULE = Coro::State PACKAGE = Coro::AIO	1929	MODULE = Coro::State PACKAGE = Coro::AIO
1227		1930
1228	SV *	1931	SV *
1229	_get_state ()	1932	_get_state ()
1230	CODE:	1933	CODE:
1231	{	1934	{
1232	struct {	1935	struct io_state *data;
1233	int errorno;
1234	int laststype;
1235	int laststatval;
1236	Stat_t statcache;
1237	} data;
1238		1936
		1937	RETVAL = newSV (sizeof (struct io_state));
		1938	data = (struct io_state *)SvPVX (RETVAL);
		1939	SvCUR_set (RETVAL, sizeof (struct io_state));
		1940	SvPOK_only (RETVAL);
		1941
1239	data.errorno = errno;	1942	data->errorno = errno;
1240	data.laststype = PL_laststype;	1943	data->laststype = PL_laststype;
1241	data.laststatval = PL_laststatval;	1944	data->laststatval = PL_laststatval;
1242	data.statcache = PL_statcache;	1945	data->statcache = PL_statcache;
1243
1244	RETVAL = newSVpvn ((char *)&data, sizeof data);
1245	}	1946	}
1246	OUTPUT:	1947	OUTPUT:
1247	RETVAL	1948	RETVAL
1248		1949
1249	void	1950	void
1250	_set_state (char *data_)	1951	_set_state (char *data_)
1251	PROTOTYPE: $	1952	PROTOTYPE: $
1252	CODE:	1953	CODE:
1253	{	1954	{
1254	struct {	1955	struct io_state data = (void )data_;
1255	int errorno;
1256	int laststype;
1257	int laststatval;
1258	Stat_t statcache;
1259	} data = (void )data_;
1260		1956
1261	errno = data->errorno;	1957	errno = data->errorno;
1262	PL_laststype = data->laststype;	1958	PL_laststype = data->laststype;
1263	PL_laststatval = data->laststatval;	1959	PL_laststatval = data->laststatval;
1264	PL_statcache = data->statcache;	1960	PL_statcache = data->statcache;
1265	}	1961	}
		1962

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Comparing Coro/Coro/State.xs (file contents): Revision 1.111 by root, Thu Nov 30 18:21:14 2006 UTC vs. Revision 1.210 by root, Wed Oct 10 03:24:40 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.111 by root, Thu Nov 30 18:21:14 2006 UTC vs.
Revision 1.210 by root, Wed Oct 10 03:24:40 2007 UTC