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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.44 by root, Sat Mar 22 18:50:32 2003 UTC vs.
Revision 1.116 by root, Fri Dec 1 14:01:43 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 "libcoro/coro.c"	7	#include "patchlevel.h"
6		8
		9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
		15
		16	#define PERL_VERSION_ATLEAST(a,b,c) \
		17	(PERL_REVISION > (a) \
		18	\|\| (PERL_REVISION == (a) \
		19	&& (PERL_VERSION > (b) \
		20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		21
		22	#if !PERL_VERSION_ATLEAST (5,6,0)
		23	# ifndef PL_ppaddr
		24	# define PL_ppaddr ppaddr
		25	# endif
		26	# ifndef call_sv
		27	# define call_sv perl_call_sv
		28	# endif
		29	# ifndef get_sv
		30	# define get_sv perl_get_sv
		31	# endif
		32	# ifndef get_cv
		33	# define get_cv perl_get_cv
		34	# endif
		35	# ifndef IS_PADGV
		36	# define IS_PADGV(v) 0
		37	# endif
		38	# ifndef IS_PADCONST
		39	# define IS_PADCONST(v) 0
		40	# endif
		41	#endif
		42
7	#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
8		53
9	#ifdef HAVE_MMAP	54	#ifdef HAVE_MMAP
10	# include <unistd.h>	55	# include <unistd.h>
11	# include <sys/mman.h>	56	# include <sys/mman.h>
12	# ifndef MAP_ANONYMOUS	57	# ifndef MAP_ANONYMOUS
14	# define MAP_ANONYMOUS MAP_ANON	59	# define MAP_ANONYMOUS MAP_ANON
15	# else	60	# else
16	# undef HAVE_MMAP	61	# undef HAVE_MMAP
17	# endif	62	# endif
18	# 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
19	#endif	71	# endif
20		72	#else
21	#define MAY_FLUSH /* increases codesize and is rarely used */	73	# define PAGESIZE 0
22		74	# define BOOT_PAGESIZE (void)0
23	#define SUB_INIT "Coro::State::initialize"	75	#endif
24	#define UCORO_STATE "_coro_state"
25		76
26	/* 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
27	* 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
28	* and should be unique. */	79	* and should be unique. */
		80	#define dSTACKLEVEL int stacklevel
29	#define dSTACKLEVEL void *stacklevel = &stacklevel	81	#define STACKLEVEL ((void *)&stacklevel)
30		82
31	#define IN_DESTRUCT (PL_main_cv == Nullcv)	83	#define IN_DESTRUCT (PL_main_cv == Nullcv)
32		84
33	#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))
34		92
35	#include "CoroAPI.h"	93	#include "CoroAPI.h"
36		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
37	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 */
38		110
39	/* 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 */
40	typedef struct {	115	typedef struct coro_cctx {
41	int refcnt; /* pointer reference counter */	116	struct coro_cctx *next;
42	int usecnt; /* shared by how many coroutines */
43	int gencnt; /* generation counter */
44		117
45	coro_context cctx;	118	/* the stack */
46
47	void *sptr;	119	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	120	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;
50		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, /* coroutine is running */
		136	CF_READY, /* coroutine is ready */
		137	};
		138
		139	/* this is a structure representing a perl-level coroutine */
51	struct coro {	140	struct coro {
52	/* the optional C context */	141	/* the c coroutine allocated to this perl coroutine, if any */
53	coro_stack *stack;	142	coro_cctx *cctx;
54	void *cursp;	143
		144	/* data associated with this coroutine (initial args) */
		145	AV *args;
55	int gencnt;	146	int refcnt;
		147	int flags;
56		148
57	/* optionally saved, might be zero */	149	/* optionally saved, might be zero */
58	AV *defav;	150	AV *defav;
59	SV *defsv;	151	SV *defsv;
60	SV *errsv;	152	SV *errsv;
61		153
62	/* saved global state not related to stacks */	154	#define VAR(name,type) type name;
63	U8 dowarn;	155	# include "state.h"
64	I32 in_eval;	156	#undef VAR
65		157
66	/* the stacks and related info (callchain etc..) */	158	/* coro process data */
67	PERL_SI *curstackinfo;	159	int prio;
68	AV *curstack;
69	AV *mainstack;
70	SV **stack_sp;
71	OP *op;
72	SV **curpad;
73	AV *comppad;
74	SV **stack_base;
75	SV **stack_max;
76	SV **tmps_stack;
77	I32 tmps_floor;
78	I32 tmps_ix;
79	I32 tmps_max;
80	I32 *markstack;
81	I32 *markstack_ptr;
82	I32 *markstack_max;
83	I32 *scopestack;
84	I32 scopestack_ix;
85	I32 scopestack_max;
86	ANY *savestack;
87	I32 savestack_ix;
88	I32 savestack_max;
89	OP **retstack;
90	I32 retstack_ix;
91	I32 retstack_max;
92	COP *curcop;
93	JMPENV *top_env;
94
95	/* data associated with this coroutine (initial args) */
96	AV *args;
97	};	160	};
98		161
99	typedef struct coro *Coro__State;	162	typedef struct coro *Coro__State;
100	typedef struct coro *Coro__State_or_hashref;	163	typedef struct coro *Coro__State_or_hashref;
101		164
102	static AV main_mainstack; / used to differentiate between $main and others */	165	static AV *
103	static HV *coro_state_stash;	166	coro_clone_padlist (CV *cv)
104	static SV *ucoro_state_sv;
105	static U32 ucoro_state_hash;
106	static HV *padlist_cache;
107	static SV coro_mortal; / will be freed after next transfer */
108
109	/* mostly copied from op.c:cv_clone2 */
110	STATIC AV *
111	clone_padlist (AV *protopadlist)
112	{	167	{
113	AV *av;	168	AV *padlist = CvPADLIST (cv);
114	I32 ix;
115	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
116	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
117	SV **pname = AvARRAY (protopad_name);
118	SV **ppad = AvARRAY (protopad);
119	I32 fname = AvFILLp (protopad_name);
120	I32 fpad = AvFILLp (protopad);
121	AV newpadlist, newpad_name, *newpad;	169	AV newpadlist, newpad;
122	SV **npad;
123
124	newpad_name = newAV ();
125	for (ix = fname; ix >= 0; ix--)
126	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
127
128	newpad = newAV ();
129	av_fill (newpad, AvFILLp (protopad));
130	npad = AvARRAY (newpad);
131		170
132	newpadlist = newAV ();	171	newpadlist = newAV ();
133	AvREAL_off (newpadlist);	172	AvREAL_off (newpadlist);
134	av_store (newpadlist, 0, (SV *) newpad_name);	173	#if PERL_VERSION_ATLEAST (5,9,0)
		174	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		175	#else
		176	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		177	#endif
		178	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		179	--AvFILLp (padlist);
		180
		181	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
135	av_store (newpadlist, 1, (SV *) newpad);	182	av_store (newpadlist, 1, (SV *)newpad);
136		183
137	av = newAV (); /* will be @_ */	184	return newpadlist;
138	av_extend (av, 0);	185	}
139	av_store (newpad, 0, (SV *) av);
140	AvFLAGS (av) = AVf_REIFY;
141		186
142	for (ix = fpad; ix > 0; ix--)	187	static void
		188	free_padlist (AV *padlist)
		189	{
		190	/* may be during global destruction */
		191	if (SvREFCNT (padlist))
143	{	192	{
144	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	193	I32 i = AvFILLp (padlist);
145	if (namesv && namesv != &PL_sv_undef)	194	while (i >= 0)
146	{	195	{
147	char name = SvPVX (namesv); / XXX */	196	SV **svp = av_fetch (padlist, i--, FALSE);
148	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	197	if (svp)
149	{ /* lexical from outside? */
150	npad[ix] = SvREFCNT_inc (ppad[ix]);
151	}	198	{
152	else
153	{ /* our own lexical */
154	SV *sv;	199	SV *sv;
155	if (*name == '&')	200	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
156	sv = SvREFCNT_inc (ppad[ix]);	201	SvREFCNT_dec (sv);
157	else if (*name == '@')	202
158	sv = (SV *) newAV ();	203	SvREFCNT_dec (*svp);
159	else if (*name == '%')
160	sv = (SV *) newHV ();
161	else
162	sv = NEWSV (0, 0);
163	if (!SvPADBUSY (sv))
164	SvPADMY_on (sv);
165	npad[ix] = sv;
166	}	204	}
167	}	205	}
168	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	206
169	{	207	SvREFCNT_dec ((SV*)padlist);
170	npad[ix] = SvREFCNT_inc (ppad[ix]);
171	}
172	else
173	{
174	SV *sv = NEWSV (0, 0);
175	SvPADTMP_on (sv);
176	npad[ix] = sv;
177	}
178	}	208	}
		209	}
179		210
180	#if 0 /* return -ENOTUNDERSTOOD */	211	static int
181	/* Now that vars are all in place, clone nested closures. */	212	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		213	{
		214	AV *padlist;
		215	AV av = (AV )mg->mg_obj;
182		216
183	for (ix = fpad; ix > 0; ix--) {	217	/* casting is fun. */
184	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	218	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
185	if (namesv	219	free_padlist (padlist);
186	&& namesv != &PL_sv_undef	220
187	&& !(SvFLAGS(namesv) & SVf_FAKE)	221	SvREFCNT_dec (av);
188	&& *SvPVX(namesv) == '&'	222
189	&& CvCLONE(ppad[ix]))	223	return 0;
190	{	224	}
191	CV kid = cv_clone((CV)ppad[ix]);	225
192	SvREFCNT_dec(ppad[ix]);	226	#define PERL_MAGIC_coro PERL_MAGIC_ext
193	CvCLONE_on(kid);	227
194	SvPADMY_on(kid);	228	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
195	npad[ix] = (SV*)kid;	229
196	}	230	#define CORO_MAGIC(cv) \
		231	SvMAGIC (cv) \
		232	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		233	? SvMAGIC (cv) \
		234	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		235	: 0
		236
		237	/* the next two functions merely cache the padlists */
		238	static void
		239	get_padlist (CV *cv)
		240	{
		241	MAGIC *mg = CORO_MAGIC (cv);
		242	AV *av;
		243
		244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
		245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
		246	else
		247	{
		248	#if 0
		249	/* this is probably cleaner, but also slower? */
		250	CV *cp = Perl_cv_clone (cv);
		251	CvPADLIST (cv) = CvPADLIST (cp);
		252	CvPADLIST (cp) = 0;
		253	SvREFCNT_dec (cp);
		254	#else
		255	CvPADLIST (cv) = coro_clone_padlist (cv);
		256	#endif
		257	}
		258	}
		259
		260	static void
		261	put_padlist (CV *cv)
		262	{
		263	MAGIC *mg = CORO_MAGIC (cv);
		264	AV *av;
		265
		266	if (!mg)
		267	{
		268	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		269	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		270	mg->mg_virtual = &vtbl_coro;
		271	mg->mg_obj = (SV *)newAV ();
197	}	272	}
198	#endif
199		273
200	return newpadlist;	274	av = (AV *)mg->mg_obj;
201	}
202		275
203	#ifdef MAY_FLUSH	276	if (AvFILLp (av) >= AvMAX (av))
204	STATIC void	277	av_extend (av, AvMAX (av) + 1);
205	free_padlist (AV *padlist)
206	{
207	/* may be during global destruction */
208	if (SvREFCNT(padlist))
209	{
210	I32 i = AvFILLp(padlist);
211	while (i >= 0)
212	{
213	SV **svp = av_fetch(padlist, i--, FALSE);
214	SV sv = svp ? svp : Nullsv;
215	if (sv)
216	SvREFCNT_dec(sv);
217	}
218		278
219	SvREFCNT_dec((SV*)padlist);	279	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
220	}
221	}	280	}
222	#endif
223
224	/* the next two functions merely cache the padlists */
225	STATIC void
226	get_padlist (CV *cv)
227	{
228	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
229
230	if (he && AvFILLp ((AV )he) >= 0)
231	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
232	else
233	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
234	}
235
236	STATIC void
237	put_padlist (CV *cv)
238	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
240
241	if (SvTYPE (*he) != SVt_PVAV)
242	{
243	SvREFCNT_dec (*he);
244	he = (SV )newAV ();
245	}
246
247	av_push ((AV )he, (SV *)CvPADLIST (cv));
248	}
249
250	#ifdef MAY_FLUSH
251	STATIC void
252	flush_padlist_cache ()
253	{
254	HV *hv = padlist_cache;
255	padlist_cache = newHV ();
256
257	if (hv_iterinit (hv))
258	{
259	HE *he;
260	AV *padlist;
261
262	while (!!(he = hv_iternext (hv)))
263	{
264	AV av = (AV )HeVAL(he);
265
266	/* casting is fun. */
267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
268	free_padlist (padlist);
269	}
270	}
271
272	SvREFCNT_dec (hv);
273	}
274	#endif
275		281
276	#define SB do {	282	#define SB do {
277	#define SE } while (0)	283	#define SE } while (0)
278		284
279	#define LOAD(state) load_state(aTHX_ (state));	285	#define LOAD(state) load_state((state));
280	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	286	#define SAVE(state,flags) save_state((state),(flags));
281		287
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	288	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
283		289
284	static void	290	static void
285	load_state(pTHX_ Coro__State c)	291	load_state(Coro__State c)
286	{	292	{
287	PL_dowarn = c->dowarn;	293	#define VAR(name,type) PL_ ## name = c->name;
288	PL_in_eval = c->in_eval;	294	# include "state.h"
289		295	#undef VAR
290	PL_curstackinfo = c->curstackinfo;
291	PL_curstack = c->curstack;
292	PL_mainstack = c->mainstack;
293	PL_stack_sp = c->stack_sp;
294	PL_op = c->op;
295	PL_curpad = c->curpad;
296	PL_comppad = c->comppad;
297	PL_stack_base = c->stack_base;
298	PL_stack_max = c->stack_max;
299	PL_tmps_stack = c->tmps_stack;
300	PL_tmps_floor = c->tmps_floor;
301	PL_tmps_ix = c->tmps_ix;
302	PL_tmps_max = c->tmps_max;
303	PL_markstack = c->markstack;
304	PL_markstack_ptr = c->markstack_ptr;
305	PL_markstack_max = c->markstack_max;
306	PL_scopestack = c->scopestack;
307	PL_scopestack_ix = c->scopestack_ix;
308	PL_scopestack_max = c->scopestack_max;
309	PL_savestack = c->savestack;
310	PL_savestack_ix = c->savestack_ix;
311	PL_savestack_max = c->savestack_max;
312	PL_retstack = c->retstack;
313	PL_retstack_ix = c->retstack_ix;
314	PL_retstack_max = c->retstack_max;
315	PL_curcop = c->curcop;
316	PL_top_env = c->top_env;
317		296
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	299	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
321		300
…		…
324	CV *cv;	303	CV *cv;
325		304
326	/* now do the ugly restore mess */	305	/* now do the ugly restore mess */
327	while ((cv = (CV *)POPs))	306	while ((cv = (CV *)POPs))
328	{	307	{
329	AV padlist = (AV )POPs;
330
331	if (padlist)
332	{
333	put_padlist (cv); /* mark this padlist as available */	308	put_padlist (cv); /* mark this padlist as available */
334	CvPADLIST(cv) = padlist;	309	CvDEPTH (cv) = PTR2IV (POPs);
335	#ifdef USE_THREADS	310	CvPADLIST (cv) = (AV *)POPs;
336	/CvOWNER(cv) = (struct perl_thread )POPs;*/
337	#endif
338	}
339
340	++CvDEPTH(cv);
341	}	311	}
342		312
343	PUTBACK;	313	PUTBACK;
344	}	314	}
345	}	315	}
346		316
347	static void	317	static void
348	save_state(pTHX_ Coro__State c, int flags)	318	save_state(Coro__State c, int flags)
349	{	319	{
350	{	320	{
351	dSP;	321	dSP;
352	I32 cxix = cxstack_ix;	322	I32 cxix = cxstack_ix;
353	PERL_CONTEXT *ccstk = cxstack;	323	PERL_CONTEXT *ccstk = cxstack;
…		…
367	PERL_CONTEXT *cx = &ccstk[cxix--];	337	PERL_CONTEXT *cx = &ccstk[cxix--];
368		338
369	if (CxTYPE(cx) == CXt_SUB)	339	if (CxTYPE(cx) == CXt_SUB)
370	{	340	{
371	CV *cv = cx->blk_sub.cv;	341	CV *cv = cx->blk_sub.cv;
		342
372	if (CvDEPTH(cv))	343	if (CvDEPTH (cv))
373	{	344	{
374	#ifdef USE_THREADS
375	/XPUSHs ((SV )CvOWNER(cv));*/
376	/CvOWNER(cv) = 0;/
377	/error must unlock this cv etc.. etc.../
378	#endif
379	EXTEND (SP, CvDEPTH(cv)*2);	345	EXTEND (SP, 3);
380
381	while (--CvDEPTH(cv))
382	{
383	/* this tells the restore code to increment CvDEPTH */
384	PUSHs (Nullsv);
385	PUSHs ((SV *)cv);
386	}
387		346
388	PUSHs ((SV *)CvPADLIST(cv));	347	PUSHs ((SV *)CvPADLIST(cv));
		348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
389	PUSHs ((SV *)cv);	349	PUSHs ((SV *)cv);
390		350
		351	CvDEPTH (cv) = 0;
391	get_padlist (cv); /* this is a monster */	352	get_padlist (cv);
392	}	353	}
393	}	354	}
		355	#ifdef CXt_FORMAT
394	else if (CxTYPE(cx) == CXt_FORMAT)	356	else if (CxTYPE(cx) == CXt_FORMAT)
395	{	357	{
396	/* I never used formats, so how should I know how these are implemented? */	358	/* I never used formats, so how should I know how these are implemented? */
397	/* my bold guess is as a simple, plain sub... */	359	/* my bold guess is as a simple, plain sub... */
398	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	360	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
399	}	361	}
		362	#endif
400	}	363	}
401		364
402	if (top_si->si_type == PERLSI_MAIN)	365	if (top_si->si_type == PERLSI_MAIN)
403	break;	366	break;
404		367
…		…
412		375
413	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	376	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
414	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	377	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
415	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	378	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
416		379
417	c->dowarn = PL_dowarn;	380	#define VAR(name,type)c->name = PL_ ## name;
418	c->in_eval = PL_in_eval;	381	# include "state.h"
419		382	#undef VAR
420	c->curstackinfo = PL_curstackinfo;
421	c->curstack = PL_curstack;
422	c->mainstack = PL_mainstack;
423	c->stack_sp = PL_stack_sp;
424	c->op = PL_op;
425	c->curpad = PL_curpad;
426	c->comppad = PL_comppad;
427	c->stack_base = PL_stack_base;
428	c->stack_max = PL_stack_max;
429	c->tmps_stack = PL_tmps_stack;
430	c->tmps_floor = PL_tmps_floor;
431	c->tmps_ix = PL_tmps_ix;
432	c->tmps_max = PL_tmps_max;
433	c->markstack = PL_markstack;
434	c->markstack_ptr = PL_markstack_ptr;
435	c->markstack_max = PL_markstack_max;
436	c->scopestack = PL_scopestack;
437	c->scopestack_ix = PL_scopestack_ix;
438	c->scopestack_max = PL_scopestack_max;
439	c->savestack = PL_savestack;
440	c->savestack_ix = PL_savestack_ix;
441	c->savestack_max = PL_savestack_max;
442	c->retstack = PL_retstack;
443	c->retstack_ix = PL_retstack_ix;
444	c->retstack_max = PL_retstack_max;
445	c->curcop = PL_curcop;
446	c->top_env = PL_top_env;
447	}	383	}
448		384
449	/*	385	/*
450	* allocate various perl stacks. This is an exact copy	386	* allocate various perl stacks. This is an exact copy
451	* of perl.c:init_stacks, except that it uses less memory	387	* of perl.c:init_stacks, except that it uses less memory
452	* on the assumption that coroutines do not usually need	388	* on the (sometimes correct) assumption that coroutines do
453	* a lot of stackspace.	389	* not usually need a lot of stackspace.
454	*/	390	*/
455	STATIC void	391	static void
456	coro_init_stacks (pTHX)	392	coro_init_stacks ()
457	{	393	{
458	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	394	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
459	PL_curstackinfo->si_type = PERLSI_MAIN;	395	PL_curstackinfo->si_type = PERLSI_MAIN;
460	PL_curstack = PL_curstackinfo->si_stack;	396	PL_curstack = PL_curstackinfo->si_stack;
461	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	397	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
462		398
463	PL_stack_base = AvARRAY(PL_curstack);	399	PL_stack_base = AvARRAY(PL_curstack);
464	PL_stack_sp = PL_stack_base;	400	PL_stack_sp = PL_stack_base;
465	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	401	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
466		402
467	New(50,PL_tmps_stack,96,SV*);	403	New(50,PL_tmps_stack,128,SV*);
468	PL_tmps_floor = -1;	404	PL_tmps_floor = -1;
469	PL_tmps_ix = -1;	405	PL_tmps_ix = -1;
470	PL_tmps_max = 96;	406	PL_tmps_max = 128;
471		407
472	New(54,PL_markstack,16,I32);	408	New(54,PL_markstack,32,I32);
473	PL_markstack_ptr = PL_markstack;	409	PL_markstack_ptr = PL_markstack;
474	PL_markstack_max = PL_markstack + 16;	410	PL_markstack_max = PL_markstack + 32;
475		411
		412	#ifdef SET_MARK_OFFSET
476	SET_MARK_OFFSET;	413	SET_MARK_OFFSET;
		414	#endif
477		415
478	New(54,PL_scopestack,16,I32);	416	New(54,PL_scopestack,32,I32);
479	PL_scopestack_ix = 0;	417	PL_scopestack_ix = 0;
480	PL_scopestack_max = 16;	418	PL_scopestack_max = 32;
481		419
482	New(54,PL_savestack,96,ANY);	420	New(54,PL_savestack,64,ANY);
483	PL_savestack_ix = 0;	421	PL_savestack_ix = 0;
484	PL_savestack_max = 96;	422	PL_savestack_max = 64;
485		423
		424	#if !PERL_VERSION_ATLEAST (5,9,0)
486	New(54,PL_retstack,8,OP*);	425	New(54,PL_retstack,16,OP*);
487	PL_retstack_ix = 0;	426	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	427	PL_retstack_max = 16;
		428	#endif
489	}	429	}
490		430
491	/*	431	/*
492	* destroy the stacks, the callchain etc...	432	* destroy the stacks, the callchain etc...
493	* still there is a memleak of 128 bytes...
494	*/	433	*/
495	STATIC void	434	static void
496	destroy_stacks(pTHX)	435	coro_destroy_stacks ()
497	{	436	{
498	if (!IN_DESTRUCT)	437	if (!IN_DESTRUCT)
499	{	438	{
500	/* is this ugly, I ask? */	439	/* is this ugly, I ask? */
501	while (PL_scopestack_ix)	440	LEAVE_SCOPE (0);
502	LEAVE;
503		441
504	/* sure it is, but more important: is it correct?? :/ */	442	/* sure it is, but more important: is it correct?? :/ */
505	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
506	FREETMPS;	443	FREETMPS;
		444
		445	/POPSTACK_TO (PL_mainstack);//D//use/
507	}	446	}
508		447
509	while (PL_curstackinfo->si_next)	448	while (PL_curstackinfo->si_next)
510	PL_curstackinfo = PL_curstackinfo->si_next;	449	PL_curstackinfo = PL_curstackinfo->si_next;
511		450
512	while (PL_curstackinfo)	451	while (PL_curstackinfo)
513	{	452	{
514	PERL_SI *p = PL_curstackinfo->si_prev;	453	PERL_SI *p = PL_curstackinfo->si_prev;
515		454
516	{	455	{ /D//remove/
517	dSP;	456	dSP;
518	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	457	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519	PUTBACK; /* possibly superfluous */	458	PUTBACK; /* possibly superfluous */
520	}	459	}
521		460
522	if (!IN_DESTRUCT)	461	if (!IN_DESTRUCT)
523	{	462	{
524	dounwind(-1);	463	dounwind (-1);/D//remove/
525	SvREFCNT_dec(PL_curstackinfo->si_stack);	464	SvREFCNT_dec (PL_curstackinfo->si_stack);
526	}	465	}
527		466
528	Safefree(PL_curstackinfo->si_cxstack);	467	Safefree (PL_curstackinfo->si_cxstack);
529	Safefree(PL_curstackinfo);	468	Safefree (PL_curstackinfo);
530	PL_curstackinfo = p;	469	PL_curstackinfo = p;
531	}	470	}
532		471
533	Safefree(PL_tmps_stack);	472	Safefree (PL_tmps_stack);
534	Safefree(PL_markstack);	473	Safefree (PL_markstack);
535	Safefree(PL_scopestack);	474	Safefree (PL_scopestack);
536	Safefree(PL_savestack);	475	Safefree (PL_savestack);
		476	#if !PERL_VERSION_ATLEAST (5,9,0)
537	Safefree(PL_retstack);	477	Safefree (PL_retstack);
538	}
539
540	static void
541	allocate_stack (Coro__State ctx, int alloc)
542	{
543	coro_stack *stack;
544
545	New (0, stack, 1, coro_stack);
546
547	stack->refcnt = 1;
548	stack->usecnt = 1;
549	stack->gencnt = ctx->gencnt = 0;
550	if (alloc)
551	{
552	#if HAVE_MMAP
553	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
554	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
555	if (stack->sptr == (void *)-1)
556	#endif	478	#endif
557	{
558	/FIXME//D//* reasonable stack size! */
559	stack->ssize = -4096 * sizeof (long);
560	New (0, stack->sptr, 4096, long);
561	}
562	}
563	else
564	stack->sptr = 0;
565
566	ctx->stack = stack;
567	}	479	}
568		480
569	static void	481	static void
570	deallocate_stack (Coro__State ctx)	482	setup_coro (struct coro *coro)
571	{
572	coro_stack *stack = ctx->stack;
573
574	ctx->stack = 0;
575
576	if (stack)
577	{
578	if (!--stack->refcnt)
579	{
580	#ifdef HAVE_MMAP
581	if (stack->ssize > 0 && stack->sptr)
582	munmap (stack->sptr, stack->ssize);
583	else
584	#else
585	Safefree (stack->sptr);
586	#endif
587	Safefree (stack);
588	}
589	else if (ctx->gencnt == stack->gencnt)
590	--stack->usecnt;
591	}
592	}
593
594	static void
595	setup_coro (void *arg)
596	{	483	{
597	/*	484	/*
598	* emulate part of the perl startup here.	485	* emulate part of the perl startup here.
599	*/	486	*/
600	dSP;
601	Coro__State ctx = (Coro__State)arg;
602	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
603		487
604	coro_init_stacks (aTHX);	488	coro_init_stacks ();
		489
605	/PL_curcop = 0;/	490	PL_curcop = 0;
606	/PL_in_eval = PL_in_eval;/ /* inherit */	491	PL_in_eval = 0;
		492	PL_curpm = 0;
		493
		494	{
		495	dSP;
		496	LOGOP myop;
		497
		498	/* I have no idea why this is needed, but it is */
		499	PUSHMARK (SP);
		500
607	SvREFCNT_dec (GvAV (PL_defgv));	501	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = ctx->args;	502	GvAV (PL_defgv) = coro->args; coro->args = 0;
609		503
610	SPAGAIN;
611
612	if (ctx->stack)
613	{
614	ctx->cursp = 0;
615
616	PUSHMARK(SP);
617	PUTBACK;
618	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
619
620	if (SvTRUE (ERRSV))
621	croak (NULL);
622	else
623	croak ("FATAL: CCTXT coroutine returned!");
624	}
625	else
626	{
627	UNOP myop;
628
629	PL_op = (OP *)&myop;
630
631	Zero(&myop, 1, UNOP);	504	Zero (&myop, 1, LOGOP);
632	myop.op_next = Nullop;	505	myop.op_next = Nullop;
633	myop.op_flags = OPf_WANT_VOID;	506	myop.op_flags = OPf_WANT_VOID;
634		507
		508	PL_op = (OP *)&myop;
		509
635	PUSHMARK(SP);	510	PUSHMARK (SP);
636	XPUSHs (sub_init);	511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
637	/*
638	* the next line is slightly wrong, as PL_op->op_next
639	* is actually being executed so we skip the first op.
640	* that doesn't matter, though, since it is only
641	* pp_nextstate and we never return...
642	* ah yes, and I don't care anyways ;)
643	*/
644	PUTBACK;	512	PUTBACK;
645	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
646	SPAGAIN;	514	SPAGAIN;
647		515
648	ENTER; /* necessary e.g. for dounwind */	516	ENTER; /* necessary e.g. for dounwind */
649	}	517	}
650	}	518	}
651		519
652	static void	520	static void
653	continue_coro (void *arg)	521	free_coro_mortal ()
654	{	522	{
655	/*
656	* this is a _very_ stripped down perl interpreter ;)
657	*/
658	Coro__State ctx = (Coro__State)arg;
659	JMPENV coro_start_env;
660
661	/* same as JMPENV_BOOTSTRAP */
662	Zero(&coro_start_env, 1, JMPENV);
663	coro_start_env.je_ret = -1;
664	coro_start_env.je_mustcatch = TRUE;
665	PL_top_env = &coro_start_env;
666
667	ctx->cursp = 0;
668	PL_op = PL_op->op_next;
669	CALLRUNOPS(aTHX);
670
671	abort ();
672	}
673
674	STATIC void
675	transfer(pTHX_ struct coro prev, struct coro next, int flags)
676	{
677	dSTACKLEVEL;
678	static struct coro *xnext;
679
680	if (prev != next)
681	{
682	xnext = next;
683
684	if (next->mainstack)
685	{
686	SAVE (prev, flags);
687	LOAD (next);
688
689	/* mark this state as in-use */
690	next->mainstack = 0;
691	next->tmps_ix = -2;
692
693	/* stacklevel changed? if yes, grab the stack for us! */
694	if (flags & TRANSFER_SAVE_CCTXT)
695	{
696	if (!prev->stack)
697	allocate_stack (prev, 0);
698	else if (prev->cursp != stacklevel
699	&& prev->stack->usecnt > 1)
700	{
701	prev->gencnt = ++prev->stack->gencnt;
702	prev->stack->usecnt = 1;
703	}
704
705	/* has our stack been invalidated? */
706	if (next->stack && next->stack->gencnt != next->gencnt)
707	{
708	deallocate_stack (next);
709	allocate_stack (next, 1);
710	coro_create (&(next->stack->cctx),
711	continue_coro, (void *)next,
712	next->stack->sptr, labs (next->stack->ssize));
713	}
714
715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
716	/* don't add any code here */
717	}
718
719	}
720	else if (next->tmps_ix == -2)
721	croak ("tried to transfer to running coroutine");
722	else
723	{
724	SAVE (prev, -1); /* first get rid of the old state */
725
726	if (flags & TRANSFER_SAVE_CCTXT)
727	{
728	if (!prev->stack)
729	allocate_stack (prev, 0);
730
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732	{
733	setup_coro (next);
734
735	prev->stack->refcnt++;
736	prev->stack->usecnt++;
737	next->stack = prev->stack;
738	next->gencnt = prev->gencnt;
739	}
740	else
741	{
742	allocate_stack (next, 1);
743	coro_create (&(next->stack->cctx),
744	setup_coro, (void *)next,
745	next->stack->sptr, labs (next->stack->ssize));
746	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
747	/* don't add any code here */
748	}
749	}
750	else
751	setup_coro (next);
752	}
753
754	/*
755	* xnext is now either prev or next, depending on wether
756	* we switched the c stack or not. that's why I use a global
757	* variable, that should become thread-specific at one point.
758	*/
759	xnext->cursp = stacklevel;
760	}
761
762	if (coro_mortal)	523	if (coro_mortal)
763	{	524	{
764	SvREFCNT_dec (coro_mortal);	525	SvREFCNT_dec (coro_mortal);
765	coro_mortal = 0;	526	coro_mortal = 0;
766	}	527	}
767	}	528	}
768		529
769	#define SV_CORO(sv,func) \	530	static void NOINLINE
770	do { \	531	prepare_cctx (coro_cctx *cctx)
771	if (SvROK (sv)) \	532	{
772	sv = SvRV (sv); \	533	dSP;
773	\	534	LOGOP myop;
774	if (SvTYPE(sv) == SVt_PVHV) \
775	{ \
776	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
777	\
778	if (!he) \
779	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
780	\
781	(sv) = SvRV (HeVAL(he)); \
782	} \
783	\
784	/* must also be changed inside Coro::Cont::yield */ \
785	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
786	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
787	\
788	} while(0)
789		535
790	#define SvSTATE(sv) (struct coro *)SvIV (sv)	536	Zero (&myop, 1, LOGOP);
		537	myop.op_next = PL_op;
		538	myop.op_flags = OPf_WANT_VOID;
791		539
		540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
		541
		542	PUSHMARK (SP);
		543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		544	PUTBACK;
		545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
		546	SPAGAIN;
		547	}
		548
		549	static void
		550	coro_run (void *arg)
		551	{
		552	/* coro_run is the alternative epilogue of transfer() */
		553	UNLOCK;
		554
		555	/*
		556	* this is a _very_ stripped down perl interpreter ;)
		557	*/
		558	PL_top_env = &PL_start_env;
		559
		560	/* inject call to cctx_init */
		561	prepare_cctx ((coro_cctx *)arg);
		562
		563	/* somebody will hit me for both perl_run and PL_restartop */
		564	perl_run (PL_curinterp);
		565
		566	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
		567	abort ();
		568	}
		569
		570	static coro_cctx *
		571	cctx_new ()
		572	{
		573	coro_cctx *cctx;
		574
		575	++cctx_count;
		576
		577	New (0, cctx, 1, coro_cctx);
		578
		579	#if HAVE_MMAP
		580
		581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		582	/* mmap suppsedly does allocate-on-write for us */
		583	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		584
		585	if (cctx->sptr == (void *)-1)
		586	{
		587	perror ("FATAL: unable to mmap stack for coroutine");
		588	_exit (EXIT_FAILURE);
		589	}
		590
		591	# if STACKGUARD
		592	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		593	# endif
		594
		595	#else
		596
		597	cctx->ssize = STACKSIZE * (long)sizeof (long);
		598	New (0, cctx->sptr, STACKSIZE, long);
		599
		600	if (!cctx->sptr)
		601	{
		602	perror ("FATAL: unable to malloc stack for coroutine");
		603	_exit (EXIT_FAILURE);
		604	}
		605
		606	#endif
		607
		608	#if USE_VALGRIND
		609	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		610	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		611	cctx->ssize + (char *)cctx->sptr
		612	);
		613	#endif
		614
		615	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		616
		617	return cctx;
		618	}
		619
		620	static void
		621	cctx_destroy (coro_cctx *cctx)
		622	{
		623	if (!cctx)
		624	return;
		625
		626	--cctx_count;
		627
		628	#if USE_VALGRIND
		629	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		630	#endif
		631
		632	#if HAVE_MMAP
		633	munmap (cctx->sptr, cctx->ssize);
		634	#else
		635	Safefree (cctx->sptr);
		636	#endif
		637
		638	Safefree (cctx);
		639	}
		640
		641	static coro_cctx *
		642	cctx_get ()
		643	{
		644	coro_cctx *cctx;
		645
		646	if (cctx_first)
		647	{
		648	cctx = cctx_first;
		649	cctx_first = cctx->next;
		650	--cctx_idle;
		651	}
		652	else
		653	{
		654	cctx = cctx_new ();
		655	PL_op = PL_op->op_next;
		656	}
		657
		658	return cctx;
		659	}
		660
		661	static void
		662	cctx_put (coro_cctx *cctx)
		663	{
		664	/* free another cctx if overlimit */
		665	if (cctx_idle >= MAX_IDLE_CCTX)
		666	{
		667	coro_cctx *first = cctx_first;
		668	cctx_first = first->next;
		669	--cctx_idle;
		670
		671	assert (!first->inuse);
		672	cctx_destroy (first);
		673	}
		674
		675	++cctx_idle;
		676	cctx->next = cctx_first;
		677	cctx_first = cctx;
		678	}
		679
		680	/* never call directly, always through the coro_state_transfer global variable */
		681	static void NOINLINE
		682	transfer (struct coro prev, struct coro next, int flags)
		683	{
		684	dSTACKLEVEL;
		685
		686	/* sometimes transfer is only called to set idle_sp */
		687	if (flags == TRANSFER_SET_STACKLEVEL)
		688	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		689	else if (prev != next)
		690	{
		691	coro_cctx *prev__cctx;
		692
		693	if (!prev->cctx)
		694	{
		695	/* create a new empty context */
		696	Newz (0, prev->cctx, 1, coro_cctx);
		697	prev->cctx->inuse = 1;
		698	prev->flags \|= CF_RUNNING;
		699	}
		700
		701	if (!prev->flags & CF_RUNNING)
		702	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		703
		704	if (next->flags & CF_RUNNING)
		705	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		706
		707	prev->flags &= ~CF_RUNNING;
		708	next->flags \|= CF_RUNNING;
		709
		710	LOCK;
		711
		712	if (next->mainstack)
		713	{
		714	/* coroutine already started */
		715	SAVE (prev, flags);
		716	LOAD (next);
		717	}
		718	else
		719	{
		720	/* need to start coroutine */
		721	/* first get rid of the old state */
		722	SAVE (prev, -1);
		723	/* setup coroutine call */
		724	setup_coro (next);
		725	/* need a new stack */
		726	assert (!next->stack);
		727	}
		728
		729	prev__cctx = prev->cctx;
		730
		731	/* possibly "free" the cctx */
		732	if (prev__cctx->idle_sp == STACKLEVEL)
		733	{
		734	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		735	assert (PL_top_env == prev__cctx->top_env);
		736
		737	cctx_put (prev__cctx);
		738	prev->cctx = 0;
		739	}
		740
		741	if (!next->cctx)
		742	next->cctx = cctx_get ();
		743
		744	if (prev__cctx != next->cctx)
		745	{
		746	assert ( prev__cctx->inuse);
		747	assert (!next->cctx->inuse);
		748
		749	prev__cctx->inuse = 0;
		750	next->cctx->inuse = 1;
		751
		752	prev__cctx->top_env = PL_top_env;
		753	PL_top_env = next->cctx->top_env;
		754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		755	}
		756
		757	free_coro_mortal ();
		758
		759	UNLOCK;
		760	}
		761	}
		762
		763	struct transfer_args
		764	{
		765	struct coro prev, next;
		766	int flags;
		767	};
		768
		769	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
		770
		771	static void
		772	coro_state_destroy (struct coro *coro)
		773	{
		774	if (coro->refcnt--)
		775	return;
		776
		777	if (coro->flags & CF_RUNNING)
		778	croak ("FATAL: tried to destroy currently running coroutine");
		779
		780	if (coro->mainstack && coro->mainstack != main_mainstack)
		781	{
		782	struct coro temp;
		783
		784	SAVE ((&temp), TRANSFER_SAVE_ALL);
		785	LOAD (coro);
		786
		787	coro_destroy_stacks ();
		788
		789	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		790
		791	coro->mainstack = 0;
		792	}
		793
		794	cctx_destroy (coro->cctx);
		795	SvREFCNT_dec (coro->args);
		796	Safefree (coro);
		797	}
		798
792	static void	799	static int
		800	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		801	{
		802	struct coro coro = (struct coro )mg->mg_ptr;
		803	mg->mg_ptr = 0;
		804
		805	coro_state_destroy (coro);
		806
		807	return 0;
		808	}
		809
		810	static int
		811	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		812	{
		813	struct coro coro = (struct coro )mg->mg_ptr;
		814
		815	++coro->refcnt;
		816
		817	return 0;
		818	}
		819
		820	static MGVTBL coro_state_vtbl = {
		821	0, 0, 0, 0,
		822	coro_state_clear,
		823	0,
		824	#ifdef MGf_DUP
		825	coro_state_dup,
		826	#else
		827	# define MGf_DUP 0
		828	#endif
		829	};
		830
		831	static struct coro *
		832	SvSTATE (SV *coro)
		833	{
		834	HV *stash;
		835	MAGIC *mg;
		836
		837	if (SvROK (coro))
		838	coro = SvRV (coro);
		839
		840	stash = SvSTASH (coro);
		841	if (stash != coro_stash && stash != coro_state_stash)
		842	{
		843	/* very slow, but rare, check */
		844	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		845	croak ("Coro::State object required");
		846	}
		847
		848	mg = SvMAGIC (coro);
		849	assert (mg->mg_type == PERL_MAGIC_ext);
		850	return (struct coro *)mg->mg_ptr;
		851	}
		852
		853	static void
		854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)
		855	{
		856	ta->prev = SvSTATE (prev);
		857	ta->next = SvSTATE (next);
		858	ta->flags = flags;
		859	}
		860
		861	static void
793	api_transfer(pTHX_ SV prev, SV next, int flags)	862	api_transfer (SV prev, SV next, int flags)
794	{	863	{
795	SV_CORO (prev, "Coro::transfer");	864	dTHX;
796	SV_CORO (next, "Coro::transfer");	865	struct transfer_args ta;
797		866
798	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	867	prepare_transfer (&ta, prev, next, flags);
		868	TRANSFER (ta);
799	}	869	}
800		870
801	/ Coro ******************************************************************/	871	/ Coro ******************************************************************/
802		872
803	#define PRIO_MAX 3	873	#define PRIO_MAX 3
…		…
807	#define PRIO_IDLE -3	877	#define PRIO_IDLE -3
808	#define PRIO_MIN -4	878	#define PRIO_MIN -4
809		879
810	/* for Coro.pm */	880	/* for Coro.pm */
811	static GV coro_current, coro_idle;	881	static GV coro_current, coro_idle;
812	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
813	static int coro_nready;	883	static int coro_nready;
814		884
815	static void	885	static void
816	coro_enq (SV *sv)	886	coro_enq (SV *coro_sv)
817	{	887	{
818	if (SvTYPE (sv) == SVt_PVHV)
819	{
820	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
821	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
822
823	prio = prio > PRIO_MAX ? PRIO_MAX
824	: prio < PRIO_MIN ? PRIO_MIN
825	: prio;
826
827	av_push (coro_ready [prio - PRIO_MIN], sv);	888	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
828	coro_nready++;	889	coro_nready++;
829
830	return;
831	}
832
833	croak ("Coro::ready tried to enqueue something that is not a coroutine");
834	}	890	}
835		891
836	static SV *	892	static SV *
837	coro_deq (int min_prio)	893	coro_deq (int min_prio)
838	{	894	{
…		…
841	min_prio -= PRIO_MIN;	897	min_prio -= PRIO_MIN;
842	if (min_prio < 0)	898	if (min_prio < 0)
843	min_prio = 0;	899	min_prio = 0;
844		900
845	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	901	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
846	if (av_len (coro_ready[prio]) >= 0)	902	if (AvFILLp (coro_ready [prio]) >= 0)
847	{	903	{
848	coro_nready--;	904	coro_nready--;
849	return av_shift (coro_ready[prio]);	905	return av_shift (coro_ready [prio]);
850	}	906	}
851		907
852	return 0;	908	return 0;
853	}	909	}
854		910
855	static void	911	static int
856	api_ready (SV *coro)	912	api_ready (SV *coro_sv)
857	{	913	{
		914	struct coro *coro;
		915
858	if (SvROK (coro))	916	if (SvROK (coro_sv))
859	coro = SvRV (coro);	917	coro_sv = SvRV (coro_sv);
860		918
		919	coro = SvSTATE (coro_sv);
		920
		921	if (coro->flags & CF_READY)
		922	return 0;
		923
		924	if (coro->flags & CF_RUNNING)
		925	croak ("Coro::ready called on currently running coroutine");
		926
		927	coro->flags \|= CF_READY;
		928
		929	LOCK;
861	coro_enq (SvREFCNT_inc (coro));	930	coro_enq (SvREFCNT_inc (coro_sv));
		931	UNLOCK;
		932
		933	return 1;
		934	}
		935
		936	static int
		937	api_is_ready (SV *coro_sv)
		938	{
		939	return !!SvSTATE (coro_sv)->flags & CF_READY;
		940	}
		941
		942	static void
		943	prepare_schedule (struct transfer_args *ta)
		944	{
		945	SV current, prev, *next;
		946
		947	current = GvSV (coro_current);
		948
		949	for (;;)
		950	{
		951	LOCK;
		952	next = coro_deq (PRIO_MIN);
		953	UNLOCK;
		954
		955	if (next)
		956	break;
		957
		958	{
		959	dSP;
		960
		961	ENTER;
		962	SAVETMPS;
		963
		964	PUSHMARK (SP);
		965	PUTBACK;
		966	call_sv (GvSV (coro_idle), G_DISCARD);
		967
		968	FREETMPS;
		969	LEAVE;
		970	}
		971	}
		972
		973	prev = SvRV (current);
		974	SvRV (current) = next;
		975
		976	/* free this only after the transfer */
		977	LOCK;
		978	free_coro_mortal ();
		979	UNLOCK;
		980	coro_mortal = prev;
		981
		982	ta->prev = SvSTATE (prev);
		983	ta->next = SvSTATE (next);
		984	ta->flags = TRANSFER_SAVE_ALL;
		985
		986	ta->next->flags &= ~CF_READY;
		987	}
		988
		989	static void
		990	prepare_cede (struct transfer_args *ta)
		991	{
		992	api_ready (GvSV (coro_current));
		993
		994	prepare_schedule (ta);
862	}	995	}
863		996
864	static void	997	static void
865	api_schedule (void)	998	api_schedule (void)
866	{	999	{
867	SV prev, next;	1000	dTHX;
		1001	struct transfer_args ta;
868		1002
869	prev = SvRV (GvSV (coro_current));	1003	prepare_schedule (&ta);
870	next = coro_deq (PRIO_MIN);	1004	TRANSFER (ta);
871
872	if (!next)
873	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
874
875	/* free this only after the transfer */
876	coro_mortal = prev;
877	SV_CORO (prev, "Coro::schedule");
878
879	SvRV (GvSV (coro_current)) = next;
880
881	SV_CORO (next, "Coro::schedule");
882
883	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
884	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
885	}	1005	}
886		1006
887	static void	1007	static void
888	api_cede (void)	1008	api_cede (void)
889	{	1009	{
890	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	1010	dTHX;
		1011	struct transfer_args ta;
891		1012
892	api_schedule ();	1013	prepare_cede (&ta);
		1014	TRANSFER (ta);
893	}	1015	}
894		1016
895	MODULE = Coro::State PACKAGE = Coro::State	1017	MODULE = Coro::State PACKAGE = Coro::State
896		1018
897	PROTOTYPES: ENABLE	1019	PROTOTYPES: DISABLE
898		1020
899	BOOT:	1021	BOOT:
900	{ /* {} necessary for stoopid perl-5.6.x */	1022	{
901	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1023	#ifdef USE_ITHREADS
902	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1024	MUTEX_INIT (&coro_mutex);
		1025	#endif
		1026	BOOT_PAGESIZE;
		1027
903	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
904		1029
905	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
906	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
907	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1032	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
908	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
909
910	if (!padlist_cache)
911	padlist_cache = newHV ();
912		1033
913	main_mainstack = PL_mainstack;	1034	main_mainstack = PL_mainstack;
914		1035
915	coroapi.ver = CORO_API_VERSION;	1036	coroapi.ver = CORO_API_VERSION;
916	coroapi.transfer = api_transfer;	1037	coroapi.transfer = api_transfer;
917	}
918		1038
919	Coro::State	1039	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
920	_newprocess(args)	1040	}
921	SV * args	1041
922	PROTOTYPE: $	1042	SV *
		1043	new (char *klass, ...)
923	CODE:	1044	CODE:
924	Coro__State coro;	1045	{
		1046	struct coro *coro;
		1047	HV *hv;
		1048	int i;
925		1049
926	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
927	croak ("Coro::State::_newprocess expects an arrayref");
928
929	New (0, coro, 1, struct coro);	1050	Newz (0, coro, 1, struct coro);
		1051	coro->args = newAV ();
930		1052
931	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1053	hv = newHV ();
932	coro->mainstack = 0; /* actual work is done inside transfer */	1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
933	coro->stack = 0;	1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
934		1056
935	RETVAL = coro;	1057	for (i = 1; i < items; i++)
		1058	av_push (coro->args, newSVsv (ST (i)));
		1059	}
936	OUTPUT:	1060	OUTPUT:
937	RETVAL	1061	RETVAL
938		1062
939	void	1063	void
940	transfer(prev, next, flags)	1064	_set_stacklevel (...)
941	SV *prev	1065	ALIAS:
942	SV *next	1066	Coro::State::transfer = 1
943	int flags	1067	Coro::schedule = 2
944	PROTOTYPE: @	1068	Coro::cede = 3
		1069	Coro::Cont::yield = 4
945	CODE:	1070	CODE:
946	PUTBACK;	1071	{
947	SV_CORO (next, "Coro::transfer");	1072	struct transfer_args ta;
948	SV_CORO (prev, "Coro::transfer");	1073
949	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1074	switch (ix)
950	SPAGAIN;	1075	{
		1076	case 0:
		1077	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1078	ta.next = 0;
		1079	ta.flags = TRANSFER_SET_STACKLEVEL;
		1080	break;
		1081
		1082	case 1:
		1083	if (items != 3)
		1084	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
		1085
		1086	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
		1087	break;
		1088
		1089	case 2:
		1090	prepare_schedule (&ta);
		1091	break;
		1092
		1093	case 3:
		1094	prepare_cede (&ta);
		1095	break;
		1096
		1097	case 4:
		1098	{
		1099	SV *yieldstack;
		1100	SV *sv;
		1101	AV *defav = GvAV (PL_defgv);
		1102
		1103	yieldstack = *hv_fetch (
		1104	(HV *)SvRV (GvSV (coro_current)),
		1105	"yieldstack", sizeof ("yieldstack") - 1,
		1106	0
		1107	);
		1108
		1109	/* set up @_ -- ugly */
		1110	av_clear (defav);
		1111	av_fill (defav, items - 1);
		1112	while (items--)
		1113	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1114
		1115	sv = av_pop ((AV *)SvRV (yieldstack));
		1116	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
		1117	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
		1118	ta.flags = 0;
		1119	SvREFCNT_dec (sv);
		1120	}
		1121	break;
		1122
		1123	}
		1124
		1125	TRANSFER (ta);
		1126	}
951		1127
952	void	1128	void
953	DESTROY(coro)	1129	_clone_state_from (SV dst, SV src)
954	Coro::State coro	1130	CODE:
955	CODE:	1131	{
		1132	struct coro *coro_src = SvSTATE (src);
956		1133
957	if (coro->mainstack && coro->mainstack != main_mainstack)	1134	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
958	{
959	struct coro temp;
960		1135
961	PUTBACK;	1136	++coro_src->refcnt;
962	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1137	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
963	LOAD(aTHX_ coro);	1138	}
964	SPAGAIN;
965
966	destroy_stacks (aTHX);
967
968	LOAD((&temp)); /* this will get rid of defsv etc.. */
969	SPAGAIN;
970
971	coro->mainstack = 0;
972	}
973
974	deallocate_stack (coro);
975
976	Safefree (coro);
977		1139
978	void	1140	void
979	flush()
980	CODE:
981	#ifdef MAY_FLUSH
982	flush_padlist_cache ();
983	#endif
984
985	void
986	_exit(code)	1141	_exit (code)
987	int code	1142	int code
988	PROTOTYPE: $	1143	PROTOTYPE: $
989	CODE:	1144	CODE:
990	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
991	_exit (code);	1145	_exit (code);
992	#else
993	signal (SIGTERM, SIG_DFL);
994	raise (SIGTERM);
995	exit (code);
996	#endif
997		1146
998	MODULE = Coro::State PACKAGE = Coro::Cont	1147	int
		1148	cctx_count ()
		1149	CODE:
		1150	RETVAL = cctx_count;
		1151	OUTPUT:
		1152	RETVAL
999		1153
1000	# this is slightly dirty (should expose a c-level api)	1154	int
1001		1155	cctx_idle ()
1002	void	1156	CODE:
1003	yield(...)	1157	RETVAL = cctx_idle;
1004	PROTOTYPE: @	1158	OUTPUT:
1005	CODE:	1159	RETVAL
1006	static SV *returnstk;
1007	SV *sv;
1008	AV *defav = GvAV (PL_defgv);
1009	struct coro prev, next;
1010
1011	if (!returnstk)
1012	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));
1013
1014	/* set up @_ -- ugly */
1015	av_clear (defav);
1016	av_fill (defav, items - 1);
1017	while (items--)
1018	av_store (defav, items, SvREFCNT_inc (ST(items)));
1019
1020	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1021	sv = av_pop ((AV *)SvRV (returnstk));
1022	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
1023	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
1024	SvREFCNT_dec (sv);
1025
1026	transfer(aTHX_ prev, next, 0);
1027		1160
1028	MODULE = Coro::State PACKAGE = Coro	1161	MODULE = Coro::State PACKAGE = Coro
1029		1162
1030	# this is slightly dirty (should expose a c-level api)
1031
1032	BOOT:	1163	BOOT:
1033	{	1164	{
1034	int i;	1165	int i;
		1166
1035	HV *stash = gv_stashpv ("Coro", TRUE);	1167	coro_stash = gv_stashpv ("Coro", TRUE);
1036		1168
1037	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1169	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1038	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1170	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1039	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1171	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1040	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1172	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1041	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1173	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1042	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1174	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1043		1175
1044	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1176	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1045	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1177	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1046		1178
1047	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1179	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1051	SV *sv = perl_get_sv("Coro::API", 1);	1183	SV *sv = perl_get_sv("Coro::API", 1);
1052		1184
1053	coroapi.schedule = api_schedule;	1185	coroapi.schedule = api_schedule;
1054	coroapi.cede = api_cede;	1186	coroapi.cede = api_cede;
1055	coroapi.ready = api_ready;	1187	coroapi.ready = api_ready;
		1188	coroapi.is_ready = api_is_ready;
1056	coroapi.nready = &coro_nready;	1189	coroapi.nready = &coro_nready;
1057	coroapi.current = coro_current;	1190	coroapi.current = coro_current;
1058		1191
1059	GCoroAPI = &coroapi;	1192	GCoroAPI = &coroapi;
1060	sv_setiv(sv, (IV)&coroapi);	1193	sv_setiv (sv, (IV)&coroapi);
1061	SvREADONLY_on(sv);	1194	SvREADONLY_on (sv);
1062	}	1195	}
1063	}	1196	}
1064		1197
1065	void	1198	int
		1199	prio (Coro::State coro, int newprio = 0)
		1200	ALIAS:
		1201	nice = 1
		1202	CODE:
		1203	{
		1204	RETVAL = coro->prio;
		1205
		1206	if (items > 1)
		1207	{
		1208	if (ix)
		1209	newprio += coro->prio;
		1210
		1211	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1212	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1213
		1214	coro->prio = newprio;
		1215	}
		1216	}
		1217
		1218	SV *
1066	ready(self)	1219	ready (SV *self)
1067	SV * self
1068	PROTOTYPE: $	1220	PROTOTYPE: $
1069	CODE:	1221	CODE:
1070	api_ready (self);	1222	RETVAL = boolSV (api_ready (self));
		1223	OUTPUT:
		1224	RETVAL
		1225
		1226	SV *
		1227	is_ready (SV *self)
		1228	PROTOTYPE: $
		1229	CODE:
		1230	RETVAL = boolSV (api_is_ready (self));
		1231	OUTPUT:
		1232	RETVAL
1071		1233
1072	int	1234	int
1073	nready(...)	1235	nready (...)
1074	PROTOTYPE:	1236	PROTOTYPE:
1075	CODE:	1237	CODE:
1076	RETVAL = coro_nready;	1238	RETVAL = coro_nready;
1077	OUTPUT:	1239	OUTPUT:
1078	RETVAL	1240	RETVAL
1079		1241
		1242	MODULE = Coro::State PACKAGE = Coro::AIO
		1243
		1244	SV *
		1245	_get_state ()
		1246	CODE:
		1247	{
		1248	struct {
		1249	int errorno;
		1250	int laststype;
		1251	int laststatval;
		1252	Stat_t statcache;
		1253	} data;
		1254
		1255	data.errorno = errno;
		1256	data.laststype = PL_laststype;
		1257	data.laststatval = PL_laststatval;
		1258	data.statcache = PL_statcache;
		1259
		1260	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1261	}
		1262	OUTPUT:
		1263	RETVAL
		1264
1080	void	1265	void
1081	schedule(...)	1266	_set_state (char *data_)
1082	PROTOTYPE:	1267	PROTOTYPE: $
1083	CODE:	1268	CODE:
1084	api_schedule ();	1269	{
		1270	struct {
		1271	int errorno;
		1272	int laststype;
		1273	int laststatval;
		1274	Stat_t statcache;
		1275	} data = (void )data_;
1085		1276
1086	void	1277	errno = data->errorno;
1087	cede(...)	1278	PL_laststype = data->laststype;
1088	PROTOTYPE:	1279	PL_laststatval = data->laststatval;
1089	CODE:	1280	PL_statcache = data->statcache;
1090	api_cede ();	1281	}
1091

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Comparing Coro/Coro/State.xs (file contents): Revision 1.44 by root, Sat Mar 22 18:50:32 2003 UTC vs. Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.44 by root, Sat Mar 22 18:50:32 2003 UTC vs.
Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC