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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC vs.
Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC

…		…
		1	#include "libcoro/coro.c"
		2
1	#include "EXTERN.h"	3	#include "EXTERN.h"
2	#include "perl.h"	4	#include "perl.h"
3	#include "XSUB.h"	5	#include "XSUB.h"
4		6
5	#include "patchlevel.h"	7	#include "patchlevel.h"
6		8
7	#if PATCHLEVEL < 6	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)
8	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
9	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
10	# endif	25	# endif
11	# ifndef call_sv	26	# ifndef call_sv
12	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
23	# ifndef IS_PADCONST	38	# ifndef IS_PADCONST
24	# define IS_PADCONST(v) 0	39	# define IS_PADCONST(v) 0
25	# endif	40	# endif
26	#endif	41	#endif
27		42
28	#include "libcoro/coro.c"
29
30	#include <signal.h>	43	#include <stdio.h>
		44	#include <errno.h>
		45
		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
31		53
32	#ifdef HAVE_MMAP	54	#ifdef HAVE_MMAP
33	# include <unistd.h>	55	# include <unistd.h>
34	# include <sys/mman.h>	56	# include <sys/mman.h>
35	# ifndef MAP_ANONYMOUS	57	# ifndef MAP_ANONYMOUS
…		…
37	# define MAP_ANONYMOUS MAP_ANON	59	# define MAP_ANONYMOUS MAP_ANON
38	# else	60	# else
39	# undef HAVE_MMAP	61	# undef HAVE_MMAP
40	# endif	62	# endif
41	# endif	63	# endif
		64	# include <limits.h>
		65	# ifndef PAGESIZE
		66	# define PAGESIZE pagesize
		67	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		68	static long pagesize;
		69	# else
		70	# define BOOT_PAGESIZE (void)0
42	#endif	71	# endif
43		72	#else
44	#define MAY_FLUSH /* increases codesize and is rarely used */	73	# define PAGESIZE 0
45		74	# define BOOT_PAGESIZE (void)0
46	#define SUB_INIT "Coro::State::initialize"	75	#endif
47	#define UCORO_STATE "_coro_state"
48		76
49	/* The next macro should declare a variable stacklevel that contains and approximation	77	/* The next macro should declare a variable stacklevel that contains and approximation
50	* to the current C stack pointer. Its property is that it changes with each call	78	* to the current C stack pointer. Its property is that it changes with each call
51	* and should be unique. */	79	* and should be unique. */
		80	#define dSTACKLEVEL int stacklevel
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	81	#define STACKLEVEL ((void *)&stacklevel)
53		82
54	#define IN_DESTRUCT (PL_main_cv == Nullcv)	83	#define IN_DESTRUCT (PL_main_cv == Nullcv)
55		84
56	#define labs(l) ((l) >= 0 ? (l) : -(l))	85	#if __GNUC__ >= 3
		86	# define attribute(x) __attribute__(x)
		87	#else
		88	# define attribute(x)
		89	#endif
		90
		91	#define NOINLINE attribute ((noinline))
57		92
58	#include "CoroAPI.h"	93	#include "CoroAPI.h"
59		94
		95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
		96
		97	#ifdef USE_ITHREADS
		98	static perl_mutex coro_mutex;
		99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		101	#else
		102	# define LOCK (void)0
		103	# define UNLOCK (void)0
		104	#endif
		105
60	static struct CoroAPI coroapi;	106	static struct CoroAPI coroapi;
		107	static AV main_mainstack; / used to differentiate between $main and others */
		108	static HV coro_state_stash, coro_stash;
		109	static SV coro_mortal; / will be freed after next transfer */
61		110
62	/* this is actually not only the c stack but also c registers etc... */	111	static struct coro_cctx *cctx_first;
		112	static int cctx_count, cctx_idle;
		113
		114	/* this is a structure representing a c-level coroutine */
63	typedef struct {	115	typedef struct coro_cctx {
64	int refcnt; /* pointer reference counter */	116	struct coro_cctx *next;
65	int usecnt; /* shared by how many coroutines */
66	int gencnt; /* generation counter */
67		117
68	coro_context cctx;	118	/* the stack */
69
70	void *sptr;	119	void *sptr;
71	long ssize; /* positive == mmap, otherwise malloc */	120	long ssize; /* positive == mmap, otherwise malloc */
72	} coro_stack;
73		121
		122	/* cpu state */
		123	void idle_sp; / sp of top-level transfer/schedule/cede call */
		124	JMPENV *top_env;
		125	coro_context cctx;
		126
		127	int inuse;
		128
		129	#if USE_VALGRIND
		130	int valgrind_id;
		131	#endif
		132	} coro_cctx;
		133
		134	enum {
		135	CF_RUNNING = 0x0001, /* coroutine is running */
		136	CF_READY = 0x0002, /* coroutine is ready */
		137	CF_NEW = 0x0004, /* ahs never been switched to */
		138	};
		139
		140	/* this is a structure representing a perl-level coroutine */
74	struct coro {	141	struct coro {
75	/* the top-level JMPENV for each coroutine, needed to catch dies. */	142	/* the c coroutine allocated to this perl coroutine, if any */
76	JMPENV start_env;	143	coro_cctx *cctx;
77		144
78	/* the optional C context */	145	/* data associated with this coroutine (initial args) */
79	coro_stack *stack;	146	AV *args;
80	void *cursp;
81	int gencnt;	147	int refcnt;
		148	int flags;
82		149
83	/* optionally saved, might be zero */	150	/* optionally saved, might be zero */
84	AV *defav;	151	AV *defav;
85	SV *defsv;	152	SV *defsv;
86	SV *errsv;	153	SV *errsv;
87		154
88	/* saved global state not related to stacks */	155	#define VAR(name,type) type name;
89	U8 dowarn;	156	# include "state.h"
90	I32 in_eval;	157	#undef VAR
91		158
92	/* the stacks and related info (callchain etc..) */	159	/* coro process data */
93	PERL_SI *curstackinfo;	160	int prio;
94	AV *curstack;
95	AV *mainstack;
96	SV **stack_sp;
97	OP *op;
98	SV **curpad;
99	AV *comppad;
100	SV **stack_base;
101	SV **stack_max;
102	SV **tmps_stack;
103	I32 tmps_floor;
104	I32 tmps_ix;
105	I32 tmps_max;
106	I32 *markstack;
107	I32 *markstack_ptr;
108	I32 *markstack_max;
109	I32 *scopestack;
110	I32 scopestack_ix;
111	I32 scopestack_max;
112	ANY *savestack;
113	I32 savestack_ix;
114	I32 savestack_max;
115	OP **retstack;
116	I32 retstack_ix;
117	I32 retstack_max;
118	COP *curcop;
119	JMPENV *top_env;
120
121	/* data associated with this coroutine (initial args) */
122	AV *args;
123	};	161	};
124		162
125	typedef struct coro *Coro__State;	163	typedef struct coro *Coro__State;
126	typedef struct coro *Coro__State_or_hashref;	164	typedef struct coro *Coro__State_or_hashref;
127		165
128	static AV main_mainstack; / used to differentiate between $main and others */	166	static AV *
129	static HV *coro_state_stash;	167	coro_clone_padlist (CV *cv)
130	static SV *ucoro_state_sv;
131	static U32 ucoro_state_hash;
132	static HV *padlist_cache;
133	static SV coro_mortal; / will be freed after next transfer */
134
135	/* mostly copied from op.c:cv_clone2 */
136	STATIC AV *
137	clone_padlist (AV *protopadlist)
138	{	168	{
139	AV *av;	169	AV *padlist = CvPADLIST (cv);
140	I32 ix;
141	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
142	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
143	SV **pname = AvARRAY (protopad_name);
144	SV **ppad = AvARRAY (protopad);
145	I32 fname = AvFILLp (protopad_name);
146	I32 fpad = AvFILLp (protopad);
147	AV newpadlist, newpad_name, *newpad;	170	AV newpadlist, newpad;
148	SV **npad;
149
150	newpad_name = newAV ();
151	for (ix = fname; ix >= 0; ix--)
152	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
153
154	newpad = newAV ();
155	av_fill (newpad, AvFILLp (protopad));
156	npad = AvARRAY (newpad);
157		171
158	newpadlist = newAV ();	172	newpadlist = newAV ();
159	AvREAL_off (newpadlist);	173	AvREAL_off (newpadlist);
160	av_store (newpadlist, 0, (SV *) newpad_name);	174	#if PERL_VERSION_ATLEAST (5,9,0)
		175	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		176	#else
		177	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		178	#endif
		179	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		180	--AvFILLp (padlist);
		181
		182	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
161	av_store (newpadlist, 1, (SV *) newpad);	183	av_store (newpadlist, 1, (SV *)newpad);
162		184
163	av = newAV (); /* will be @_ */	185	return newpadlist;
164	av_extend (av, 0);	186	}
165	av_store (newpad, 0, (SV *) av);
166	AvFLAGS (av) = AVf_REIFY;
167		187
168	for (ix = fpad; ix > 0; ix--)	188	static void
		189	free_padlist (AV *padlist)
		190	{
		191	/* may be during global destruction */
		192	if (SvREFCNT (padlist))
169	{	193	{
170	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	194	I32 i = AvFILLp (padlist);
171	if (namesv && namesv != &PL_sv_undef)	195	while (i >= 0)
172	{	196	{
173	char name = SvPVX (namesv); / XXX */	197	SV **svp = av_fetch (padlist, i--, FALSE);
174	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	198	if (svp)
175	{ /* lexical from outside? */
176	npad[ix] = SvREFCNT_inc (ppad[ix]);
177	}	199	{
178	else
179	{ /* our own lexical */
180	SV *sv;	200	SV *sv;
181	if (*name == '&')	201	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
182	sv = SvREFCNT_inc (ppad[ix]);	202	SvREFCNT_dec (sv);
183	else if (*name == '@')	203
184	sv = (SV *) newAV ();	204	SvREFCNT_dec (*svp);
185	else if (*name == '%')
186	sv = (SV *) newHV ();
187	else
188	sv = NEWSV (0, 0);
189	#ifdef SvPADBUSY
190	if (!SvPADBUSY (sv))
191	#endif
192	SvPADMY_on (sv);
193	npad[ix] = sv;
194	}	205	}
195	}	206	}
196	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	207
197	{	208	SvREFCNT_dec ((SV*)padlist);
198	npad[ix] = SvREFCNT_inc (ppad[ix]);
199	}
200	else
201	{
202	SV *sv = NEWSV (0, 0);
203	SvPADTMP_on (sv);
204	npad[ix] = sv;
205	}
206	}	209	}
		210	}
207		211
208	#if 0 /* return -ENOTUNDERSTOOD */	212	static int
209	/* Now that vars are all in place, clone nested closures. */	213	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		214	{
		215	AV *padlist;
		216	AV av = (AV )mg->mg_obj;
210		217
211	for (ix = fpad; ix > 0; ix--) {	218	/* casting is fun. */
212	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
213	if (namesv	220	free_padlist (padlist);
214	&& namesv != &PL_sv_undef	221
215	&& !(SvFLAGS(namesv) & SVf_FAKE)	222	SvREFCNT_dec (av);
216	&& *SvPVX(namesv) == '&'	223
217	&& CvCLONE(ppad[ix]))	224	return 0;
218	{	225	}
219	CV kid = cv_clone((CV)ppad[ix]);	226
220	SvREFCNT_dec(ppad[ix]);	227	#define PERL_MAGIC_coro PERL_MAGIC_ext
221	CvCLONE_on(kid);	228
222	SvPADMY_on(kid);	229	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
223	npad[ix] = (SV*)kid;	230
224	}	231	#define CORO_MAGIC(cv) \
		232	SvMAGIC (cv) \
		233	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		234	? SvMAGIC (cv) \
		235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		236	: 0
		237
		238	/* the next two functions merely cache the padlists */
		239	static void
		240	get_padlist (CV *cv)
		241	{
		242	MAGIC *mg = CORO_MAGIC (cv);
		243	AV *av;
		244
		245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
		246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
		247	else
		248	{
		249	#if 0
		250	/* this is probably cleaner, but also slower? */
		251	CV *cp = Perl_cv_clone (cv);
		252	CvPADLIST (cv) = CvPADLIST (cp);
		253	CvPADLIST (cp) = 0;
		254	SvREFCNT_dec (cp);
		255	#else
		256	CvPADLIST (cv) = coro_clone_padlist (cv);
		257	#endif
		258	}
		259	}
		260
		261	static void
		262	put_padlist (CV *cv)
		263	{
		264	MAGIC *mg = CORO_MAGIC (cv);
		265	AV *av;
		266
		267	if (!mg)
		268	{
		269	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		270	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		271	mg->mg_virtual = &vtbl_coro;
		272	mg->mg_obj = (SV *)newAV ();
225	}	273	}
226	#endif
227		274
228	return newpadlist;	275	av = (AV *)mg->mg_obj;
229	}
230		276
231	#ifdef MAY_FLUSH	277	if (AvFILLp (av) >= AvMAX (av))
232	STATIC void	278	av_extend (av, AvMAX (av) + 1);
233	free_padlist (AV *padlist)
234	{
235	/* may be during global destruction */
236	if (SvREFCNT(padlist))
237	{
238	I32 i = AvFILLp(padlist);
239	while (i >= 0)
240	{
241	SV **svp = av_fetch(padlist, i--, FALSE);
242	SV sv = svp ? svp : Nullsv;
243	if (sv)
244	SvREFCNT_dec(sv);
245	}
246		279
247	SvREFCNT_dec((SV*)padlist);	280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
248	}
249	}	281	}
250	#endif
251
252	/* the next two functions merely cache the padlists */
253	STATIC void
254	get_padlist (CV *cv)
255	{
256	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
257
258	if (he && AvFILLp ((AV )he) >= 0)
259	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
260	else
261	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
262	}
263
264	STATIC void
265	put_padlist (CV *cv)
266	{
267	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
268
269	if (SvTYPE (*he) != SVt_PVAV)
270	{
271	SvREFCNT_dec (*he);
272	he = (SV )newAV ();
273	}
274
275	av_push ((AV )he, (SV *)CvPADLIST (cv));
276	}
277
278	#ifdef MAY_FLUSH
279	STATIC void
280	flush_padlist_cache ()
281	{
282	HV *hv = padlist_cache;
283	padlist_cache = newHV ();
284
285	if (hv_iterinit (hv))
286	{
287	HE *he;
288	AV *padlist;
289
290	while (!!(he = hv_iternext (hv)))
291	{
292	AV av = (AV )HeVAL(he);
293
294	/* casting is fun. */
295	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
296	free_padlist (padlist);
297	}
298	}
299
300	SvREFCNT_dec (hv);
301	}
302	#endif
303		282
304	#define SB do {	283	#define SB do {
305	#define SE } while (0)	284	#define SE } while (0)
306		285
307	#define LOAD(state) load_state(aTHX_ (state));	286	#define LOAD(state) load_state ((state))
308	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	287	#define SAVE(state,flags) save_state ((state),(flags))
309		288
310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311		290
312	static void	291	static void
313	load_state(pTHX_ Coro__State c)	292	load_state (Coro__State c)
314	{	293	{
315	PL_dowarn = c->dowarn;	294	#define VAR(name,type) PL_ ## name = c->name;
316	PL_in_eval = c->in_eval;	295	# include "state.h"
317		296	#undef VAR
318	PL_curstackinfo = c->curstackinfo;
319	PL_curstack = c->curstack;
320	PL_mainstack = c->mainstack;
321	PL_stack_sp = c->stack_sp;
322	PL_op = c->op;
323	PL_curpad = c->curpad;
324	PL_comppad = c->comppad;
325	PL_stack_base = c->stack_base;
326	PL_stack_max = c->stack_max;
327	PL_tmps_stack = c->tmps_stack;
328	PL_tmps_floor = c->tmps_floor;
329	PL_tmps_ix = c->tmps_ix;
330	PL_tmps_max = c->tmps_max;
331	PL_markstack = c->markstack;
332	PL_markstack_ptr = c->markstack_ptr;
333	PL_markstack_max = c->markstack_max;
334	PL_scopestack = c->scopestack;
335	PL_scopestack_ix = c->scopestack_ix;
336	PL_scopestack_max = c->scopestack_max;
337	PL_savestack = c->savestack;
338	PL_savestack_ix = c->savestack_ix;
339	PL_savestack_max = c->savestack_max;
340	PL_retstack = c->retstack;
341	PL_retstack_ix = c->retstack_ix;
342	PL_retstack_max = c->retstack_max;
343	PL_curcop = c->curcop;
344	PL_top_env = c->top_env;
345		297
346	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
347	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
348	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
349		301
…		…
352	CV *cv;	304	CV *cv;
353		305
354	/* now do the ugly restore mess */	306	/* now do the ugly restore mess */
355	while ((cv = (CV *)POPs))	307	while ((cv = (CV *)POPs))
356	{	308	{
357	AV padlist = (AV )POPs;
358
359	if (padlist)
360	{
361	put_padlist (cv); /* mark this padlist as available */	309	put_padlist (cv); /* mark this padlist as available */
362	CvPADLIST(cv) = padlist;	310	CvDEPTH (cv) = PTR2IV (POPs);
363	#ifdef USE_THREADS	311	CvPADLIST (cv) = (AV *)POPs;
364	/CvOWNER(cv) = (struct perl_thread )POPs;*/
365	#endif
366	}
367
368	++CvDEPTH(cv);
369	}	312	}
370		313
371	PUTBACK;	314	PUTBACK;
372	}	315	}
373	}	316	}
374		317
375	static void	318	static void
376	save_state(pTHX_ Coro__State c, int flags)	319	save_state (Coro__State c, int flags)
377	{	320	{
378	{	321	{
379	dSP;	322	dSP;
380	I32 cxix = cxstack_ix;	323	I32 cxix = cxstack_ix;
381	PERL_CONTEXT *ccstk = cxstack;	324	PERL_CONTEXT *ccstk = cxstack;
…		…
392	{	335	{
393	while (cxix >= 0)	336	while (cxix >= 0)
394	{	337	{
395	PERL_CONTEXT *cx = &ccstk[cxix--];	338	PERL_CONTEXT *cx = &ccstk[cxix--];
396		339
397	if (CxTYPE(cx) == CXt_SUB)	340	if (CxTYPE (cx) == CXt_SUB)
398	{	341	{
399	CV *cv = cx->blk_sub.cv;	342	CV *cv = cx->blk_sub.cv;
		343
400	if (CvDEPTH(cv))	344	if (CvDEPTH (cv))
401	{	345	{
402	#ifdef USE_THREADS
403	/XPUSHs ((SV )CvOWNER(cv));*/
404	/CvOWNER(cv) = 0;/
405	/error must unlock this cv etc.. etc.../
406	#endif
407	EXTEND (SP, CvDEPTH(cv)*2);	346	EXTEND (SP, 3);
408		347
409	while (--CvDEPTH(cv))
410	{
411	/* this tells the restore code to increment CvDEPTH */
412	PUSHs (Nullsv);
413	PUSHs ((SV *)cv);
414	}
415
416	PUSHs ((SV *)CvPADLIST(cv));	348	PUSHs ((SV *)CvPADLIST (cv));
		349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
417	PUSHs ((SV *)cv);	350	PUSHs ((SV *)cv);
418		351
		352	CvDEPTH (cv) = 0;
419	get_padlist (cv); /* this is a monster */	353	get_padlist (cv);
420	}	354	}
421	}	355	}
422	#ifdef CXt_FORMAT	356	#ifdef CXt_FORMAT
423	else if (CxTYPE(cx) == CXt_FORMAT)	357	else if (CxTYPE (cx) == CXt_FORMAT)
424	{	358	{
425	/* I never used formats, so how should I know how these are implemented? */	359	/* I never used formats, so how should I know how these are implemented? */
426	/* my bold guess is as a simple, plain sub... */	360	/* my bold guess is as a simple, plain sub... */
427	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
428	}	362	}
…		…
442		376
443	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
444	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
445	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
446		380
447	c->dowarn = PL_dowarn;	381	#define VAR(name,type)c->name = PL_ ## name;
448	c->in_eval = PL_in_eval;	382	# include "state.h"
449		383	#undef VAR
450	c->curstackinfo = PL_curstackinfo;
451	c->curstack = PL_curstack;
452	c->mainstack = PL_mainstack;
453	c->stack_sp = PL_stack_sp;
454	c->op = PL_op;
455	c->curpad = PL_curpad;
456	c->comppad = PL_comppad;
457	c->stack_base = PL_stack_base;
458	c->stack_max = PL_stack_max;
459	c->tmps_stack = PL_tmps_stack;
460	c->tmps_floor = PL_tmps_floor;
461	c->tmps_ix = PL_tmps_ix;
462	c->tmps_max = PL_tmps_max;
463	c->markstack = PL_markstack;
464	c->markstack_ptr = PL_markstack_ptr;
465	c->markstack_max = PL_markstack_max;
466	c->scopestack = PL_scopestack;
467	c->scopestack_ix = PL_scopestack_ix;
468	c->scopestack_max = PL_scopestack_max;
469	c->savestack = PL_savestack;
470	c->savestack_ix = PL_savestack_ix;
471	c->savestack_max = PL_savestack_max;
472	c->retstack = PL_retstack;
473	c->retstack_ix = PL_retstack_ix;
474	c->retstack_max = PL_retstack_max;
475	c->curcop = PL_curcop;
476	c->top_env = PL_top_env;
477	}	384	}
478		385
479	/*	386	/*
480	* allocate various perl stacks. This is an exact copy	387	* allocate various perl stacks. This is an exact copy
481	* of perl.c:init_stacks, except that it uses less memory	388	* of perl.c:init_stacks, except that it uses less memory
482	* on the assumption that coroutines do not usually need	389	* on the (sometimes correct) assumption that coroutines do
483	* a lot of stackspace.	390	* not usually need a lot of stackspace.
484	*/	391	*/
485	STATIC void	392	static void
486	coro_init_stacks (pTHX)	393	coro_init_stacks ()
487	{	394	{
488	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
489	PL_curstackinfo->si_type = PERLSI_MAIN;	396	PL_curstackinfo->si_type = PERLSI_MAIN;
490	PL_curstack = PL_curstackinfo->si_stack;	397	PL_curstack = PL_curstackinfo->si_stack;
491	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
492		399
493	PL_stack_base = AvARRAY(PL_curstack);	400	PL_stack_base = AvARRAY(PL_curstack);
494	PL_stack_sp = PL_stack_base;	401	PL_stack_sp = PL_stack_base;
495	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
496		403
497	New(50,PL_tmps_stack,96,SV*);	404	New(50,PL_tmps_stack,128,SV*);
498	PL_tmps_floor = -1;	405	PL_tmps_floor = -1;
499	PL_tmps_ix = -1;	406	PL_tmps_ix = -1;
500	PL_tmps_max = 96;	407	PL_tmps_max = 128;
501		408
502	New(54,PL_markstack,16,I32);	409	New(54,PL_markstack,32,I32);
503	PL_markstack_ptr = PL_markstack;	410	PL_markstack_ptr = PL_markstack;
504	PL_markstack_max = PL_markstack + 16;	411	PL_markstack_max = PL_markstack + 32;
505		412
506	#ifdef SET_MARK_OFFSET	413	#ifdef SET_MARK_OFFSET
507	SET_MARK_OFFSET;	414	SET_MARK_OFFSET;
508	#endif	415	#endif
509		416
510	New(54,PL_scopestack,16,I32);	417	New(54,PL_scopestack,32,I32);
511	PL_scopestack_ix = 0;	418	PL_scopestack_ix = 0;
512	PL_scopestack_max = 16;	419	PL_scopestack_max = 32;
513		420
514	New(54,PL_savestack,96,ANY);	421	New(54,PL_savestack,64,ANY);
515	PL_savestack_ix = 0;	422	PL_savestack_ix = 0;
516	PL_savestack_max = 96;	423	PL_savestack_max = 64;
517		424
		425	#if !PERL_VERSION_ATLEAST (5,9,0)
518	New(54,PL_retstack,8,OP*);	426	New(54,PL_retstack,16,OP*);
519	PL_retstack_ix = 0;	427	PL_retstack_ix = 0;
520	PL_retstack_max = 8;	428	PL_retstack_max = 16;
		429	#endif
521	}	430	}
522		431
523	/*	432	/*
524	* destroy the stacks, the callchain etc...	433	* destroy the stacks, the callchain etc...
525	*/	434	*/
526	STATIC void	435	static void
527	destroy_stacks(pTHX)	436	coro_destroy_stacks ()
528	{	437	{
529	if (!IN_DESTRUCT)	438	if (!IN_DESTRUCT)
530	{	439	{
531	/* is this ugly, I ask? */	440	/* is this ugly, I ask? */
532	while (PL_scopestack_ix)	441	LEAVE_SCOPE (0);
533	LEAVE;
534		442
535	/* sure it is, but more important: is it correct?? :/ */	443	/* sure it is, but more important: is it correct?? :/ */
536	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
537	FREETMPS;	444	FREETMPS;
		445
		446	/POPSTACK_TO (PL_mainstack);//D//use/
538	}	447	}
539		448
540	while (PL_curstackinfo->si_next)	449	while (PL_curstackinfo->si_next)
541	PL_curstackinfo = PL_curstackinfo->si_next;	450	PL_curstackinfo = PL_curstackinfo->si_next;
542		451
543	while (PL_curstackinfo)	452	while (PL_curstackinfo)
544	{	453	{
545	PERL_SI *p = PL_curstackinfo->si_prev;	454	PERL_SI *p = PL_curstackinfo->si_prev;
546		455
547	{	456	{ /D//remove/
548	dSP;	457	dSP;
549	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
550	PUTBACK; /* possibly superfluous */	459	PUTBACK; /* possibly superfluous */
551	}	460	}
552		461
553	if (!IN_DESTRUCT)	462	if (!IN_DESTRUCT)
554	{	463	{
555	dounwind(-1);	464	dounwind (-1);/D//remove/
556	SvREFCNT_dec(PL_curstackinfo->si_stack);	465	SvREFCNT_dec (PL_curstackinfo->si_stack);
557	}	466	}
558		467
559	Safefree(PL_curstackinfo->si_cxstack);	468	Safefree (PL_curstackinfo->si_cxstack);
560	Safefree(PL_curstackinfo);	469	Safefree (PL_curstackinfo);
561	PL_curstackinfo = p;	470	PL_curstackinfo = p;
562	}	471	}
563		472
564	Safefree(PL_tmps_stack);	473	Safefree (PL_tmps_stack);
565	Safefree(PL_markstack);	474	Safefree (PL_markstack);
566	Safefree(PL_scopestack);	475	Safefree (PL_scopestack);
567	Safefree(PL_savestack);	476	Safefree (PL_savestack);
		477	#if !PERL_VERSION_ATLEAST (5,9,0)
568	Safefree(PL_retstack);	478	Safefree (PL_retstack);
569	}
570
571	static void
572	allocate_stack (Coro__State ctx, int alloc)
573	{
574	coro_stack *stack;
575
576	New (0, stack, 1, coro_stack);
577
578	stack->refcnt = 1;
579	stack->usecnt = 1;
580	stack->gencnt = ctx->gencnt = 0;
581	if (alloc)
582	{
583	#if HAVE_MMAP
584	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
585	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
586	if (stack->sptr == (void *)-1)
587	#endif	479	#endif
588	{
589	/FIXME//D//* reasonable stack size! */
590	stack->ssize = -4096 * sizeof (long);
591	New (0, stack->sptr, 4096, long);
592	}
593	}
594	else
595	stack->sptr = 0;
596
597	ctx->stack = stack;
598	}	480	}
599		481
600	static void	482	static void
601	deallocate_stack (Coro__State ctx)	483	setup_coro (struct coro *coro)
602	{
603	coro_stack *stack = ctx->stack;
604
605	ctx->stack = 0;
606
607	if (stack)
608	{
609	if (!--stack->refcnt)
610	{
611	#ifdef HAVE_MMAP
612	if (stack->ssize > 0 && stack->sptr)
613	munmap (stack->sptr, stack->ssize);
614	else
615	#endif
616	Safefree (stack->sptr);
617
618	Safefree (stack);
619	}
620	else if (ctx->gencnt == stack->gencnt)
621	--stack->usecnt;
622	}
623	}
624
625	static void
626	setup_coro (void *arg)
627	{	484	{
628	/*	485	/*
629	* emulate part of the perl startup here.	486	* emulate part of the perl startup here.
630	*/	487	*/
631	dSP;
632	Coro__State ctx = (Coro__State)arg;
633	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
634		488
635	coro_init_stacks (aTHX);	489	coro_init_stacks ();
636	/PL_curcop = 0;/	490
637	/PL_in_eval = PL_in_eval;/ /* inherit */	491	PL_curcop = &PL_compiling;
		492	PL_in_eval = EVAL_NULL;
		493	PL_curpm = 0;
		494	PL_localizing = 0;
		495	PL_dirty = 0;
		496	PL_restartop = 0;
		497
		498	{
		499	dSP;
		500	LOGOP myop;
		501
		502	/* I have no idea why this is needed, but it is */
		503	PUSHMARK (SP);
		504
638	SvREFCNT_dec (GvAV (PL_defgv));	505	SvREFCNT_dec (GvAV (PL_defgv));
639	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	506	GvAV (PL_defgv) = coro->args; coro->args = 0;
640		507
641	SPAGAIN;
642
643	if (ctx->stack)
644	{
645	ctx->cursp = 0;
646
647	PUSHMARK(SP);
648	PUTBACK;
649	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
650
651	if (SvTRUE (ERRSV))
652	croak (NULL);
653	else
654	croak ("FATAL: CCTXT coroutine returned!");
655	}
656	else
657	{
658	UNOP myop;
659
660	PL_op = (OP *)&myop;
661
662	Zero(&myop, 1, UNOP);	508	Zero (&myop, 1, LOGOP);
663	myop.op_next = Nullop;	509	myop.op_next = Nullop;
664	myop.op_flags = OPf_WANT_VOID;	510	myop.op_flags = OPf_WANT_VOID;
665		511
		512	PL_op = (OP *)&myop;
		513
666	PUSHMARK(SP);	514	PUSHMARK (SP);
667	XPUSHs (sub_init);	515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
668	/*
669	* the next line is slightly wrong, as PL_op->op_next
670	* is actually being executed so we skip the first op.
671	* that doesn't matter, though, since it is only
672	* pp_nextstate and we never return...
673	* ah yes, and I don't care anyways ;)
674	*/
675	PUTBACK;	516	PUTBACK;
676	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
677	SPAGAIN;	518	SPAGAIN;
		519	}
678		520
679	ENTER; /* necessary e.g. for dounwind */	521	ENTER; /* necessary e.g. for dounwind */
680	}
681	}	522	}
682		523
683	static void	524	static void
684	continue_coro (void *arg)	525	free_coro_mortal ()
685	{	526	{
686	/*
687	* this is a _very_ stripped down perl interpreter ;)
688	*/
689	Coro__State ctx = (Coro__State)arg;
690	JMPENV coro_start_env;
691
692	PL_top_env = &ctx->start_env;
693
694	ctx->cursp = 0;
695	PL_op = PL_op->op_next;
696	CALLRUNOPS(aTHX);
697
698	abort ();
699	}
700
701	STATIC void
702	transfer(pTHX_ struct coro prev, struct coro next, int flags)
703	{
704	dSTACKLEVEL;
705	static struct coro *xnext;
706
707	if (prev != next)
708	{
709	xnext = next;
710
711	if (next->mainstack)
712	{
713	SAVE (prev, flags);
714	LOAD (next);
715
716	/* mark this state as in-use */
717	next->mainstack = 0;
718	next->tmps_ix = -2;
719
720	/* stacklevel changed? if yes, grab the stack for us! */
721	if (flags & TRANSFER_SAVE_CCTXT)
722	{
723	if (!prev->stack)
724	allocate_stack (prev, 0);
725	else if (prev->cursp != stacklevel
726	&& prev->stack->usecnt > 1)
727	{
728	prev->gencnt = ++prev->stack->gencnt;
729	prev->stack->usecnt = 1;
730	}
731
732	/* has our stack been invalidated? */
733	if (next->stack && next->stack->gencnt != next->gencnt)
734	{
735	deallocate_stack (next);
736	allocate_stack (next, 1);
737	coro_create (&(next->stack->cctx),
738	continue_coro, (void *)next,
739	next->stack->sptr, labs (next->stack->ssize));
740	}
741
742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
743	/* don't add any code here */
744	}
745
746	}
747	else if (next->tmps_ix == -2)
748	croak ("tried to transfer to running coroutine");
749	else
750	{
751	SAVE (prev, -1); /* first get rid of the old state */
752
753	if (flags & TRANSFER_SAVE_CCTXT)
754	{
755	if (!prev->stack)
756	allocate_stack (prev, 0);
757
758	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
759	{
760	PL_top_env = &next->start_env;
761
762	setup_coro (next);
763
764	prev->stack->refcnt++;
765	prev->stack->usecnt++;
766	next->stack = prev->stack;
767	next->gencnt = prev->gencnt;
768	}
769	else
770	{
771	assert (!next->stack);
772	allocate_stack (next, 1);
773	coro_create (&(next->stack->cctx),
774	setup_coro, (void *)next,
775	next->stack->sptr, labs (next->stack->ssize));
776	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
777	/* don't add any code here */
778	}
779	}
780	else
781	setup_coro (next);
782	}
783
784	/*
785	* xnext is now either prev or next, depending on wether
786	* we switched the c stack or not. that's why I use a global
787	* variable, that should become thread-specific at one point.
788	*/
789	xnext->cursp = stacklevel;
790	}
791
792	if (coro_mortal)	527	if (coro_mortal)
793	{	528	{
794	SvREFCNT_dec (coro_mortal);	529	SvREFCNT_dec (coro_mortal);
795	coro_mortal = 0;	530	coro_mortal = 0;
796	}	531	}
797	}	532	}
798		533
799	#define SV_CORO(sv,func) \	534	static void NOINLINE
800	do { \	535	prepare_cctx (coro_cctx *cctx)
801	if (SvROK (sv)) \	536	{
802	sv = SvRV (sv); \	537	dSP;
803	\	538	LOGOP myop;
804	if (SvTYPE(sv) == SVt_PVHV) \
805	{ \
806	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
807	\
808	if (!he) \
809	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
810	\
811	(sv) = SvRV (HeVAL(he)); \
812	} \
813	\
814	/* must also be changed inside Coro::Cont::yield */ \
815	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
816	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
817	\
818	} while(0)
819		539
820	#define SvSTATE(sv) (struct coro *)SvIV (sv)	540	Zero (&myop, 1, LOGOP);
		541	myop.op_next = PL_op;
		542	myop.op_flags = OPf_WANT_VOID;
821		543
		544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		545
		546	PUSHMARK (SP);
		547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		548	PUTBACK;
		549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		550	SPAGAIN;
		551	}
		552
		553	static void
		554	coro_run (void *arg)
		555	{
		556	/* coro_run is the alternative epilogue of transfer() */
		557	UNLOCK;
		558
		559	/*
		560	* this is a _very_ stripped down perl interpreter ;)
		561	*/
		562	PL_top_env = &PL_start_env;
		563
		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	}
		573
		574	static coro_cctx *
		575	cctx_new ()
		576	{
		577	coro_cctx *cctx;
		578
		579	++cctx_count;
		580
		581	New (0, cctx, 1, coro_cctx);
		582
		583	#if HAVE_MMAP
		584
		585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		586	/* mmap suppsedly 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);
		588
		589	if (cctx->sptr == (void *)-1)
		590	{
		591	perror ("FATAL: unable to mmap stack for coroutine");
		592	_exit (EXIT_FAILURE);
		593	}
		594
		595	# if STACKGUARD
		596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		597	# endif
		598
		599	#else
		600
		601	cctx->ssize = STACKSIZE * (long)sizeof (long);
		602	New (0, cctx->sptr, STACKSIZE, long);
		603
		604	if (!cctx->sptr)
		605	{
		606	perror ("FATAL: unable to malloc stack for coroutine");
		607	_exit (EXIT_FAILURE);
		608	}
		609
		610	#endif
		611
		612	#if USE_VALGRIND
		613	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		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
		621	return cctx;
		622	}
		623
		624	static void
		625	cctx_destroy (coro_cctx *cctx)
		626	{
		627	if (!cctx)
		628	return;
		629
		630	--cctx_count;
		631
		632	#if USE_VALGRIND
		633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		634	#endif
		635
		636	#if HAVE_MMAP
		637	munmap (cctx->sptr, cctx->ssize);
		638	#else
		639	Safefree (cctx->sptr);
		640	#endif
		641
		642	Safefree (cctx);
		643	}
		644
		645	static coro_cctx *
		646	cctx_get ()
		647	{
		648	coro_cctx *cctx;
		649
		650	if (cctx_first)
		651	{
		652	cctx = cctx_first;
		653	cctx_first = cctx->next;
		654	--cctx_idle;
		655	}
		656	else
		657	{
		658	cctx = cctx_new ();
		659	PL_op = PL_op->op_next;
		660	}
		661
		662	return cctx;
		663	}
		664
		665	static void
		666	cctx_put (coro_cctx *cctx)
		667	{
		668	/* free another cctx if overlimit */
		669	if (cctx_idle >= MAX_IDLE_CCTX)
		670	{
		671	coro_cctx *first = cctx_first;
		672	cctx_first = first->next;
		673	--cctx_idle;
		674
		675	assert (!first->inuse);
		676	cctx_destroy (first);
		677	}
		678
		679	++cctx_idle;
		680	cctx->next = cctx_first;
		681	cctx_first = cctx;
		682	}
		683
		684	/* never call directly, always through the coro_state_transfer global variable */
		685	static void NOINLINE
		686	transfer (struct coro prev, struct coro next, int flags)
		687	{
		688	dSTACKLEVEL;
		689
		690	/* sometimes transfer is only called to set idle_sp */
		691	if (flags == TRANSFER_SET_STACKLEVEL)
		692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		693	else if (prev != next)
		694	{
		695	coro_cctx *prev__cctx;
		696
		697	if (prev->flags & CF_NEW)
		698	{
		699	/* create a new empty context */
		700	Newz (0, prev->cctx, 1, coro_cctx);
		701	prev->cctx->inuse = 1;
		702	prev->flags &= ~CF_NEW;
		703	prev->flags \|= CF_RUNNING;
		704	}
		705
		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;
		714	next->flags \|= CF_RUNNING;
		715
		716	LOCK;
		717
		718	if (next->flags & CF_NEW)
		719	{
		720	/* need to start coroutine */
		721	next->flags &= ~CF_NEW;
		722	/* first get rid of the old state */
		723	SAVE (prev, -1);
		724	/* setup coroutine call */
		725	setup_coro (next);
		726	/* need a new stack */
		727	assert (!next->stack);
		728	}
		729	else
		730	{
		731	/* coroutine already started */
		732	SAVE (prev, flags);
		733	LOAD (next);
		734	}
		735
		736	prev__cctx = prev->cctx;
		737
		738	/* possibly "free" the cctx */
		739	if (prev__cctx->idle_sp == STACKLEVEL && 0)
		740	{
		741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		742	assert (PL_top_env == prev__cctx->top_env);
		743
		744	prev->cctx = 0;
		745
		746	cctx_put (prev__cctx);
		747	prev__cctx->inuse = 0;
		748	}
		749
		750	if (!next->cctx)
		751	{
		752	next->cctx = cctx_get ();
		753	assert (!next->cctx->inuse);
		754	next->cctx->inuse = 1;
		755	}
		756
		757	if (prev__cctx != next->cctx)
		758	{
		759	prev__cctx->top_env = PL_top_env;
		760	PL_top_env = next->cctx->top_env;
		761	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		762	}
		763
		764	free_coro_mortal ();
		765
		766	UNLOCK;
		767	}
		768	}
		769
		770	struct transfer_args
		771	{
		772	struct coro prev, next;
		773	int flags;
		774	};
		775
		776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
		777
		778	static void
		779	coro_state_destroy (struct coro *coro)
		780	{
		781	if (coro->refcnt--)
		782	return;
		783
		784	if (coro->mainstack && coro->mainstack != main_mainstack)
		785	{
		786	struct coro temp;
		787
		788	if (coro->flags & CF_RUNNING)
		789	croak ("FATAL: tried to destroy currently running coroutine");
		790
		791	SAVE ((&temp), TRANSFER_SAVE_ALL);
		792	LOAD (coro);
		793
		794	coro_destroy_stacks ();
		795
		796	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		797
		798	coro->mainstack = 0;
		799	}
		800
		801	cctx_destroy (coro->cctx);
		802	SvREFCNT_dec (coro->args);
		803	Safefree (coro);
		804	}
		805
822	static void	806	static int
		807	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		808	{
		809	struct coro coro = (struct coro )mg->mg_ptr;
		810	mg->mg_ptr = 0;
		811
		812	coro_state_destroy (coro);
		813
		814	return 0;
		815	}
		816
		817	static int
		818	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		819	{
		820	struct coro coro = (struct coro )mg->mg_ptr;
		821
		822	++coro->refcnt;
		823
		824	return 0;
		825	}
		826
		827	static MGVTBL coro_state_vtbl = {
		828	0, 0, 0, 0,
		829	coro_state_clear,
		830	0,
		831	#ifdef MGf_DUP
		832	coro_state_dup,
		833	#else
		834	# define MGf_DUP 0
		835	#endif
		836	};
		837
		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
		861	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		862	{
		863	ta->prev = SvSTATE (prev);
		864	ta->next = SvSTATE (next);
		865	ta->flags = flags;
		866	}
		867
		868	static void
823	api_transfer(pTHX_ SV prev, SV next, int flags)	869	api_transfer (SV prev, SV next, int flags)
824	{	870	{
825	SV_CORO (prev, "Coro::transfer");	871	struct transfer_args ta;
826	SV_CORO (next, "Coro::transfer");
827		872
828	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	873	prepare_transfer (&ta, prev, next, flags);
		874	TRANSFER (ta);
829	}	875	}
830		876
831	/ Coro ******************************************************************/	877	/ Coro ******************************************************************/
832		878
833	#define PRIO_MAX 3	879	#define PRIO_MAX 3
…		…
836	#define PRIO_LOW -1	882	#define PRIO_LOW -1
837	#define PRIO_IDLE -3	883	#define PRIO_IDLE -3
838	#define PRIO_MIN -4	884	#define PRIO_MIN -4
839		885
840	/* for Coro.pm */	886	/* for Coro.pm */
841	static GV coro_current, coro_idle;	887	static SV *coro_current;
842	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
843	static int coro_nready;	889	static int coro_nready;
844		890
845	static void	891	static void
846	coro_enq (SV *sv)	892	coro_enq (SV *coro_sv)
847	{	893	{
848	if (SvTYPE (sv) == SVt_PVHV)
849	{
850	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
851	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
852
853	prio = prio > PRIO_MAX ? PRIO_MAX
854	: prio < PRIO_MIN ? PRIO_MIN
855	: prio;
856
857	av_push (coro_ready [prio - PRIO_MIN], sv);	894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
858	coro_nready++;	895	coro_nready++;
859
860	return;
861	}
862
863	croak ("Coro::ready tried to enqueue something that is not a coroutine");
864	}	896	}
865		897
866	static SV *	898	static SV *
867	coro_deq (int min_prio)	899	coro_deq (int min_prio)
868	{	900	{
…		…
871	min_prio -= PRIO_MIN;	903	min_prio -= PRIO_MIN;
872	if (min_prio < 0)	904	if (min_prio < 0)
873	min_prio = 0;	905	min_prio = 0;
874		906
875	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	907	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
876	if (av_len (coro_ready[prio]) >= 0)	908	if (AvFILLp (coro_ready [prio]) >= 0)
877	{	909	{
878	coro_nready--;	910	coro_nready--;
879	return av_shift (coro_ready[prio]);	911	return av_shift (coro_ready [prio]);
880	}	912	}
881		913
882	return 0;	914	return 0;
883	}	915	}
884		916
885	static void	917	static int
886	api_ready (SV *coro)	918	api_ready (SV *coro_sv)
887	{	919	{
		920	struct coro *coro;
		921
888	if (SvROK (coro))	922	if (SvROK (coro_sv))
889	coro = SvRV (coro);	923	coro_sv = SvRV (coro_sv);
890		924
		925	coro = SvSTATE (coro_sv);
		926
		927	if (coro->flags & CF_READY)
		928	return 0;
		929
		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;
		936
		937	LOCK;
891	coro_enq (SvREFCNT_inc (coro));	938	coro_enq (SvREFCNT_inc (coro_sv));
		939	UNLOCK;
		940
		941	return 1;
		942	}
		943
		944	static int
		945	api_is_ready (SV *coro_sv)
		946	{
		947	return !!SvSTATE (coro_sv)->flags & CF_READY;
		948	}
		949
		950	static void
		951	prepare_schedule (struct transfer_args *ta)
		952	{
		953	SV prev, next;
		954
		955	for (;;)
		956	{
		957	LOCK;
		958	next = coro_deq (PRIO_MIN);
		959	UNLOCK;
		960
		961	if (next)
		962	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	}
		977	}
		978
		979	prev = SvRV (coro_current);
		980	SvRV_set (coro_current, next);
		981
		982	/* free this only after the transfer */
		983	LOCK;
		984	free_coro_mortal ();
		985	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	}
		998
		999	static void
		1000	prepare_cede (struct transfer_args *ta)
		1001	{
		1002	api_ready (coro_current);
		1003
		1004	prepare_schedule (ta);
892	}	1005	}
893		1006
894	static void	1007	static void
895	api_schedule (void)	1008	api_schedule (void)
896	{	1009	{
897	SV prev, next;	1010	struct transfer_args ta;
898		1011
899	prev = SvRV (GvSV (coro_current));	1012	prepare_schedule (&ta);
900	next = coro_deq (PRIO_MIN);	1013	TRANSFER (ta);
901
902	if (!next)
903	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
904
905	/* free this only after the transfer */
906	coro_mortal = prev;
907	SV_CORO (prev, "Coro::schedule");
908
909	SvRV (GvSV (coro_current)) = next;
910
911	SV_CORO (next, "Coro::schedule");
912
913	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
914	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
915	}	1014	}
916		1015
917	static void	1016	static void
918	api_cede (void)	1017	api_cede (void)
919	{	1018	{
920	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	1019	struct transfer_args ta;
921		1020
922	api_schedule ();	1021	prepare_cede (&ta);
		1022	TRANSFER (ta);
923	}	1023	}
924		1024
925	MODULE = Coro::State PACKAGE = Coro::State	1025	MODULE = Coro::State PACKAGE = Coro::State
926		1026
927	PROTOTYPES: ENABLE	1027	PROTOTYPES: DISABLE
928		1028
929	BOOT:	1029	BOOT:
930	{ /* {} necessary for stoopid perl-5.6.x */	1030	{
931	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1031	#ifdef USE_ITHREADS
932	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1032	MUTEX_INIT (&coro_mutex);
		1033	#endif
		1034	BOOT_PAGESIZE;
		1035
933	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1036	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
934		1037
935	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1038	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
936	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1039	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
937	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1040	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
938	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
939
940	if (!padlist_cache)
941	padlist_cache = newHV ();
942		1041
943	main_mainstack = PL_mainstack;	1042	main_mainstack = PL_mainstack;
944		1043
945	coroapi.ver = CORO_API_VERSION;	1044	coroapi.ver = CORO_API_VERSION;
946	coroapi.transfer = api_transfer;	1045	coroapi.transfer = api_transfer;
947	}
948		1046
949	Coro::State	1047	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
950	_newprocess(args)	1048	}
951	SV * args	1049
952	PROTOTYPE: $	1050	SV *
		1051	new (char *klass, ...)
953	CODE:	1052	CODE:
954	Coro__State coro;	1053	{
		1054	struct coro *coro;
		1055	HV *hv;
		1056	int i;
955		1057
956	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
957	croak ("Coro::State::_newprocess expects an arrayref");
958
959	Newz (0, coro, 1, struct coro);	1058	Newz (0, coro, 1, struct coro);
		1059	coro->args = newAV ();
		1060	coro->flags = CF_NEW;
960		1061
961	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1062	hv = newHV ();
962	coro->mainstack = 0; /* actual work is done inside transfer */	1063	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
963	coro->stack = 0;	1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
964		1065
965	/* same as JMPENV_BOOTSTRAP */	1066	for (i = 1; i < items; i++)
966	/* we might be able to recycle start_env, but safe is safe */	1067	av_push (coro->args, newSVsv (ST (i)));
967	//Zero(&coro->start_env, 1, JMPENV);	1068	}
968	coro->start_env.je_ret = -1;
969	coro->start_env.je_mustcatch = TRUE;
970
971	RETVAL = coro;
972	OUTPUT:	1069	OUTPUT:
973	RETVAL	1070	RETVAL
974		1071
975	void	1072	void
976	transfer(prev, next, flags)	1073	_set_stacklevel (...)
977	SV *prev	1074	ALIAS:
978	SV *next	1075	Coro::State::transfer = 1
979	int flags	1076	Coro::schedule = 2
980	PROTOTYPE: @	1077	Coro::cede = 3
981	CODE:	1078	CODE:
982	PUTBACK;	1079	{
983	SV_CORO (next, "Coro::transfer");	1080	struct transfer_args ta;
984	SV_CORO (prev, "Coro::transfer");	1081
985	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1082	switch (ix)
986	SPAGAIN;	1083	{
		1084	case 0:
		1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1086	ta.next = 0;
		1087	ta.flags = TRANSFER_SET_STACKLEVEL;
		1088	break;
		1089
		1090	case 1:
		1091	if (items != 3)
		1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
		1093
		1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1095	break;
		1096
		1097	case 2:
		1098	prepare_schedule (&ta);
		1099	break;
		1100
		1101	case 3:
		1102	prepare_cede (&ta);
		1103	break;
		1104	}
		1105
		1106	TRANSFER (ta);
		1107	}
987		1108
988	void	1109	void
989	DESTROY(coro)	1110	_clone_state_from (SV dst, SV src)
990	Coro::State coro	1111	CODE:
991	CODE:	1112	{
		1113	struct coro *coro_src = SvSTATE (src);
992		1114
993	if (coro->mainstack && coro->mainstack != main_mainstack)	1115	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
994	{
995	struct coro temp;
996		1116
997	PUTBACK;	1117	++coro_src->refcnt;
998	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1118	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
999	LOAD(aTHX_ coro);	1119	}
1000	SPAGAIN;
1001
1002	destroy_stacks (aTHX);
1003
1004	LOAD((&temp)); /* this will get rid of defsv etc.. */
1005	SPAGAIN;
1006
1007	coro->mainstack = 0;
1008	}
1009
1010	deallocate_stack (coro);
1011	SvREFCNT_dec (coro->args);
1012	Safefree (coro);
1013		1120
1014	void	1121	void
1015	flush()
1016	CODE:
1017	#ifdef MAY_FLUSH
1018	flush_padlist_cache ();
1019	#endif
1020
1021	void
1022	_exit(code)	1122	_exit (code)
1023	int code	1123	int code
1024	PROTOTYPE: $	1124	PROTOTYPE: $
1025	CODE:	1125	CODE:
1026	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
1027	_exit (code);	1126	_exit (code);
1028	#else
1029	signal (SIGTERM, SIG_DFL);
1030	raise (SIGTERM);
1031	exit (code);
1032	#endif
1033		1127
1034	MODULE = Coro::State PACKAGE = Coro::Cont	1128	int
		1129	cctx_count ()
		1130	CODE:
		1131	RETVAL = cctx_count;
		1132	OUTPUT:
		1133	RETVAL
1035		1134
1036	# this is slightly dirty (should expose a c-level api)	1135	int
1037		1136	cctx_idle ()
1038	void	1137	CODE:
1039	yield(...)	1138	RETVAL = cctx_idle;
1040	PROTOTYPE: @	1139	OUTPUT:
1041	CODE:	1140	RETVAL
1042	static SV *returnstk;
1043	SV *sv;
1044	AV *defav = GvAV (PL_defgv);
1045	struct coro prev, next;
1046
1047	if (!returnstk)
1048	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
1049
1050	/* set up @_ -- ugly */
1051	av_clear (defav);
1052	av_fill (defav, items - 1);
1053	while (items--)
1054	av_store (defav, items, SvREFCNT_inc (ST(items)));
1055
1056	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1057	sv = av_pop ((AV *)SvRV (returnstk));
1058	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
1059	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
1060	SvREFCNT_dec (sv);
1061
1062	transfer(aTHX_ prev, next, 0);
1063		1141
1064	MODULE = Coro::State PACKAGE = Coro	1142	MODULE = Coro::State PACKAGE = Coro
1065		1143
1066	# this is slightly dirty (should expose a c-level api)
1067
1068	BOOT:	1144	BOOT:
1069	{	1145	{
1070	int i;	1146	int i;
		1147
1071	HV *stash = gv_stashpv ("Coro", TRUE);	1148	coro_stash = gv_stashpv ("Coro", TRUE);
1072		1149
1073	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1150	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1074	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1151	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1075	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1076	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1077	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1078	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1079		1156
1080	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1157	coro_current = get_sv ("Coro::current", FALSE);
1081	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1158	SvREADONLY_on (coro_current);
1082		1159
1083	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1084	coro_ready[i] = newAV ();	1161	coro_ready[i] = newAV ();
1085		1162
1086	{	1163	{
1087	SV *sv = perl_get_sv("Coro::API", 1);	1164	SV *sv = perl_get_sv("Coro::API", 1);
1088		1165
1089	coroapi.schedule = api_schedule;	1166	coroapi.schedule = api_schedule;
1090	coroapi.cede = api_cede;	1167	coroapi.cede = api_cede;
1091	coroapi.ready = api_ready;	1168	coroapi.ready = api_ready;
		1169	coroapi.is_ready = api_is_ready;
1092	coroapi.nready = &coro_nready;	1170	coroapi.nready = &coro_nready;
1093	coroapi.current = coro_current;	1171	coroapi.current = coro_current;
1094		1172
1095	GCoroAPI = &coroapi;	1173	GCoroAPI = &coroapi;
1096	sv_setiv(sv, (IV)&coroapi);	1174	sv_setiv (sv, (IV)&coroapi);
1097	SvREADONLY_on(sv);	1175	SvREADONLY_on (sv);
1098	}	1176	}
1099	}	1177	}
1100		1178
1101	void	1179	int
		1180	prio (Coro::State coro, int newprio = 0)
		1181	ALIAS:
		1182	nice = 1
		1183	CODE:
		1184	{
		1185	RETVAL = coro->prio;
		1186
		1187	if (items > 1)
		1188	{
		1189	if (ix)
		1190	newprio += coro->prio;
		1191
		1192	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1193	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1194
		1195	coro->prio = newprio;
		1196	}
		1197	}
		1198
		1199	SV *
1102	ready(self)	1200	ready (SV *self)
1103	SV * self
1104	PROTOTYPE: $	1201	PROTOTYPE: $
1105	CODE:	1202	CODE:
1106	api_ready (self);	1203	RETVAL = boolSV (api_ready (self));
		1204	OUTPUT:
		1205	RETVAL
		1206
		1207	SV *
		1208	is_ready (SV *self)
		1209	PROTOTYPE: $
		1210	CODE:
		1211	RETVAL = boolSV (api_is_ready (self));
		1212	OUTPUT:
		1213	RETVAL
1107		1214
1108	int	1215	int
1109	nready(...)	1216	nready (...)
1110	PROTOTYPE:	1217	PROTOTYPE:
1111	CODE:	1218	CODE:
1112	RETVAL = coro_nready;	1219	RETVAL = coro_nready;
1113	OUTPUT:	1220	OUTPUT:
1114	RETVAL	1221	RETVAL
1115		1222
1116	void	1223	void
1117	schedule(...)	1224	_set_current (SV *current)
1118	PROTOTYPE:	1225	PROTOTYPE: $
1119	CODE:	1226	CODE:
1120	api_schedule ();	1227	SvREFCNT_dec (SvRV (coro_current));
		1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1229
		1230	MODULE = Coro::State PACKAGE = Coro::AIO
		1231
		1232	SV *
		1233	_get_state ()
		1234	CODE:
		1235	{
		1236	struct {
		1237	int errorno;
		1238	int laststype;
		1239	int laststatval;
		1240	Stat_t statcache;
		1241	} data;
		1242
		1243	data.errorno = errno;
		1244	data.laststype = PL_laststype;
		1245	data.laststatval = PL_laststatval;
		1246	data.statcache = PL_statcache;
		1247
		1248	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1249	}
		1250	OUTPUT:
		1251	RETVAL
1121		1252
1122	void	1253	void
1123	cede(...)	1254	_set_state (char *data_)
1124	PROTOTYPE:	1255	PROTOTYPE: $
1125	CODE:	1256	CODE:
1126	api_cede ();	1257	{
		1258	struct {
		1259	int errorno;
		1260	int laststype;
		1261	int laststatval;
		1262	Stat_t statcache;
		1263	} data = (void )data_;
1127		1264
		1265	errno = data->errorno;
		1266	PL_laststype = data->laststype;
		1267	PL_laststatval = data->laststatval;
		1268	PL_statcache = data->statcache;
		1269	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC vs. Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.49 by pcg, Sun Nov 23 03:34:13 2003 UTC vs.
Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC