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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.40 by root, Tue Nov 27 01:41:41 2001 UTC vs.
Revision 1.119 by root, Sat Dec 2 15:41:28 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 = 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 */
51	struct coro {	141	struct coro {
52	/* the optional C context */	142	/* the c coroutine allocated to this perl coroutine, if any */
53	coro_stack *stack;	143	coro_cctx *cctx;
54	void *cursp;	144
		145	/* data associated with this coroutine (initial args) */
		146	AV *args;
55	int gencnt;	147	int refcnt;
		148	int flags;
56		149
57	/* optionally saved, might be zero */	150	/* optionally saved, might be zero */
58	AV *defav;	151	AV *defav;
59	SV *defsv;	152	SV *defsv;
60	SV *errsv;	153	SV *errsv;
61		154
62	/* saved global state not related to stacks */	155	#define VAR(name,type) type name;
63	U8 dowarn;	156	# include "state.h"
64	I32 in_eval;	157	#undef VAR
65		158
66	/* the stacks and related info (callchain etc..) */	159	/* coro process data */
67	PERL_SI *curstackinfo;	160	int prio;
68	AV *curstack;
69	AV *mainstack;
70	SV **stack_sp;
71	OP *op;
72	SV **curpad;
73	SV **stack_base;
74	SV **stack_max;
75	SV **tmps_stack;
76	I32 tmps_floor;
77	I32 tmps_ix;
78	I32 tmps_max;
79	I32 *markstack;
80	I32 *markstack_ptr;
81	I32 *markstack_max;
82	I32 *scopestack;
83	I32 scopestack_ix;
84	I32 scopestack_max;
85	ANY *savestack;
86	I32 savestack_ix;
87	I32 savestack_max;
88	OP **retstack;
89	I32 retstack_ix;
90	I32 retstack_max;
91	COP *curcop;
92	PMOP *curpm;
93	JMPENV *top_env;
94
95	/* data associated with this coroutine (initial args) */
96	AV *args;
97	};	161	};
98		162
99	typedef struct coro *Coro__State;	163	typedef struct coro *Coro__State;
100	typedef struct coro *Coro__State_or_hashref;	164	typedef struct coro *Coro__State_or_hashref;
101		165
102	static AV main_mainstack; / used to differentiate between $main and others */	166	static AV *
103	static HV *coro_state_stash;	167	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	{	168	{
113	AV *av;	169	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;	170	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		171
132	newpadlist = newAV ();	172	newpadlist = newAV ();
133	AvREAL_off (newpadlist);	173	AvREAL_off (newpadlist);
134	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)));
135	av_store (newpadlist, 1, (SV *) newpad);	183	av_store (newpadlist, 1, (SV *)newpad);
136		184
137	av = newAV (); /* will be @_ */	185	return newpadlist;
138	av_extend (av, 0);	186	}
139	av_store (newpad, 0, (SV *) av);
140	AvFLAGS (av) = AVf_REIFY;
141		187
142	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))
143	{	193	{
144	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	194	I32 i = AvFILLp (padlist);
145	if (namesv && namesv != &PL_sv_undef)	195	while (i >= 0)
146	{	196	{
147	char name = SvPVX (namesv); / XXX */	197	SV **svp = av_fetch (padlist, i--, FALSE);
148	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	198	if (svp)
149	{ /* lexical from outside? */
150	npad[ix] = SvREFCNT_inc (ppad[ix]);
151	}	199	{
152	else
153	{ /* our own lexical */
154	SV *sv;	200	SV *sv;
155	if (*name == '&')	201	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
156	sv = SvREFCNT_inc (ppad[ix]);	202	SvREFCNT_dec (sv);
157	else if (*name == '@')	203
158	sv = (SV *) newAV ();	204	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	}	205	}
167	}	206	}
168	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	207
169	{	208	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	}	209	}
		210	}
179		211
180	#if 0 /* return -ENOTUNDERSTOOD */	212	static int
181	/* 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;
182		217
183	for (ix = fpad; ix > 0; ix--) {	218	/* casting is fun. */
184	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
185	if (namesv	220	free_padlist (padlist);
186	&& namesv != &PL_sv_undef	221
187	&& !(SvFLAGS(namesv) & SVf_FAKE)	222	SvREFCNT_dec (av);
188	&& *SvPVX(namesv) == '&'	223
189	&& CvCLONE(ppad[ix]))	224	return 0;
190	{	225	}
191	CV kid = cv_clone((CV)ppad[ix]);	226
192	SvREFCNT_dec(ppad[ix]);	227	#define PERL_MAGIC_coro PERL_MAGIC_ext
193	CvCLONE_on(kid);	228
194	SvPADMY_on(kid);	229	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
195	npad[ix] = (SV*)kid;	230
196	}	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 ();
197	}	273	}
198	#endif
199		274
200	return newpadlist;	275	av = (AV *)mg->mg_obj;
201	}
202		276
203	#ifdef MAY_FLUSH	277	if (AvFILLp (av) >= AvMAX (av))
204	STATIC void	278	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		279
219	SvREFCNT_dec((SV*)padlist);	280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
220	}
221	}	281	}
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		282
276	#define SB do {	283	#define SB do {
277	#define SE } while (0)	284	#define SE } while (0)
278		285
279	#define LOAD(state) load_state(aTHX_ (state));	286	#define LOAD(state) load_state ((state))
280	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	287	#define SAVE(state,flags) save_state ((state),(flags))
281		288
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
283		290
284	static void	291	static void
285	load_state(pTHX_ Coro__State c)	292	load_state (Coro__State c)
286	{	293	{
287	PL_dowarn = c->dowarn;	294	#define VAR(name,type) PL_ ## name = c->name;
288	PL_in_eval = c->in_eval;	295	# include "state.h"
289		296	#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_stack_base = c->stack_base;
297	PL_stack_max = c->stack_max;
298	PL_tmps_stack = c->tmps_stack;
299	PL_tmps_floor = c->tmps_floor;
300	PL_tmps_ix = c->tmps_ix;
301	PL_tmps_max = c->tmps_max;
302	PL_markstack = c->markstack;
303	PL_markstack_ptr = c->markstack_ptr;
304	PL_markstack_max = c->markstack_max;
305	PL_scopestack = c->scopestack;
306	PL_scopestack_ix = c->scopestack_ix;
307	PL_scopestack_max = c->scopestack_max;
308	PL_savestack = c->savestack;
309	PL_savestack_ix = c->savestack_ix;
310	PL_savestack_max = c->savestack_max;
311	PL_retstack = c->retstack;
312	PL_retstack_ix = c->retstack_ix;
313	PL_retstack_max = c->retstack_max;
314	PL_curcop = c->curcop;
315	PL_top_env = c->top_env;
316		297
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
320		301
…		…
323	CV *cv;	304	CV *cv;
324		305
325	/* now do the ugly restore mess */	306	/* now do the ugly restore mess */
326	while ((cv = (CV *)POPs))	307	while ((cv = (CV *)POPs))
327	{	308	{
328	AV padlist = (AV )POPs;
329
330	if (padlist)
331	{
332	put_padlist (cv); /* mark this padlist as available */	309	put_padlist (cv); /* mark this padlist as available */
333	CvPADLIST(cv) = padlist;	310	CvDEPTH (cv) = PTR2IV (POPs);
334	#ifdef USE_THREADS	311	CvPADLIST (cv) = (AV *)POPs;
335	/CvOWNER(cv) = (struct perl_thread )POPs;*/
336	#endif
337	}
338
339	++CvDEPTH(cv);
340	}	312	}
341		313
342	PUTBACK;	314	PUTBACK;
343	}	315	}
344	}	316	}
345		317
346	static void	318	static void
347	save_state(pTHX_ Coro__State c, int flags)	319	save_state (Coro__State c, int flags)
348	{	320	{
349	{	321	{
350	dSP;	322	dSP;
351	I32 cxix = cxstack_ix;	323	I32 cxix = cxstack_ix;
352	PERL_CONTEXT *ccstk = cxstack;	324	PERL_CONTEXT *ccstk = cxstack;
…		…
363	{	335	{
364	while (cxix >= 0)	336	while (cxix >= 0)
365	{	337	{
366	PERL_CONTEXT *cx = &ccstk[cxix--];	338	PERL_CONTEXT *cx = &ccstk[cxix--];
367		339
368	if (CxTYPE(cx) == CXt_SUB)	340	if (CxTYPE (cx) == CXt_SUB)
369	{	341	{
370	CV *cv = cx->blk_sub.cv;	342	CV *cv = cx->blk_sub.cv;
		343
371	if (CvDEPTH(cv))	344	if (CvDEPTH (cv))
372	{	345	{
373	#ifdef USE_THREADS
374	/XPUSHs ((SV )CvOWNER(cv));*/
375	/CvOWNER(cv) = 0;/
376	/error must unlock this cv etc.. etc.../
377	#endif
378	EXTEND (SP, CvDEPTH(cv)*2);	346	EXTEND (SP, 3);
379		347
380	while (--CvDEPTH(cv))
381	{
382	/* this tells the restore code to increment CvDEPTH */
383	PUSHs (Nullsv);
384	PUSHs ((SV *)cv);
385	}
386
387	PUSHs ((SV *)CvPADLIST(cv));	348	PUSHs ((SV *)CvPADLIST (cv));
		349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
388	PUSHs ((SV *)cv);	350	PUSHs ((SV *)cv);
389		351
		352	CvDEPTH (cv) = 0;
390	get_padlist (cv); /* this is a monster */	353	get_padlist (cv);
391	}	354	}
392	}	355	}
		356	#ifdef CXt_FORMAT
393	else if (CxTYPE(cx) == CXt_FORMAT)	357	else if (CxTYPE (cx) == CXt_FORMAT)
394	{	358	{
395	/* 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? */
396	/* my bold guess is as a simple, plain sub... */	360	/* my bold guess is as a simple, plain sub... */
397	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");
398	}	362	}
		363	#endif
399	}	364	}
400		365
401	if (top_si->si_type == PERLSI_MAIN)	366	if (top_si->si_type == PERLSI_MAIN)
402	break;	367	break;
403		368
…		…
411		376
412	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;
413	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
414	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
415		380
416	c->dowarn = PL_dowarn;	381	#define VAR(name,type)c->name = PL_ ## name;
417	c->in_eval = PL_in_eval;	382	# include "state.h"
418		383	#undef VAR
419	c->curstackinfo = PL_curstackinfo;
420	c->curstack = PL_curstack;
421	c->mainstack = PL_mainstack;
422	c->stack_sp = PL_stack_sp;
423	c->op = PL_op;
424	c->curpad = PL_curpad;
425	c->stack_base = PL_stack_base;
426	c->stack_max = PL_stack_max;
427	c->tmps_stack = PL_tmps_stack;
428	c->tmps_floor = PL_tmps_floor;
429	c->tmps_ix = PL_tmps_ix;
430	c->tmps_max = PL_tmps_max;
431	c->markstack = PL_markstack;
432	c->markstack_ptr = PL_markstack_ptr;
433	c->markstack_max = PL_markstack_max;
434	c->scopestack = PL_scopestack;
435	c->scopestack_ix = PL_scopestack_ix;
436	c->scopestack_max = PL_scopestack_max;
437	c->savestack = PL_savestack;
438	c->savestack_ix = PL_savestack_ix;
439	c->savestack_max = PL_savestack_max;
440	c->retstack = PL_retstack;
441	c->retstack_ix = PL_retstack_ix;
442	c->retstack_max = PL_retstack_max;
443	c->curcop = PL_curcop;
444	c->top_env = PL_top_env;
445	}	384	}
446		385
447	/*	386	/*
448	* allocate various perl stacks. This is an exact copy	387	* allocate various perl stacks. This is an exact copy
449	* of perl.c:init_stacks, except that it uses less memory	388	* of perl.c:init_stacks, except that it uses less memory
450	* on the assumption that coroutines do not usually need	389	* on the (sometimes correct) assumption that coroutines do
451	* a lot of stackspace.	390	* not usually need a lot of stackspace.
452	*/	391	*/
453	STATIC void	392	static void
454	coro_init_stacks (pTHX)	393	coro_init_stacks ()
455	{	394	{
456	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
457	PL_curstackinfo->si_type = PERLSI_MAIN;	396	PL_curstackinfo->si_type = PERLSI_MAIN;
458	PL_curstack = PL_curstackinfo->si_stack;	397	PL_curstack = PL_curstackinfo->si_stack;
459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460		399
461	PL_stack_base = AvARRAY(PL_curstack);	400	PL_stack_base = AvARRAY(PL_curstack);
462	PL_stack_sp = PL_stack_base;	401	PL_stack_sp = PL_stack_base;
463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464		403
465	New(50,PL_tmps_stack,96,SV*);	404	New(50,PL_tmps_stack,128,SV*);
466	PL_tmps_floor = -1;	405	PL_tmps_floor = -1;
467	PL_tmps_ix = -1;	406	PL_tmps_ix = -1;
468	PL_tmps_max = 96;	407	PL_tmps_max = 128;
469		408
470	New(54,PL_markstack,16,I32);	409	New(54,PL_markstack,32,I32);
471	PL_markstack_ptr = PL_markstack;	410	PL_markstack_ptr = PL_markstack;
472	PL_markstack_max = PL_markstack + 16;	411	PL_markstack_max = PL_markstack + 32;
473		412
		413	#ifdef SET_MARK_OFFSET
474	SET_MARK_OFFSET;	414	SET_MARK_OFFSET;
		415	#endif
475		416
476	New(54,PL_scopestack,16,I32);	417	New(54,PL_scopestack,32,I32);
477	PL_scopestack_ix = 0;	418	PL_scopestack_ix = 0;
478	PL_scopestack_max = 16;	419	PL_scopestack_max = 32;
479		420
480	New(54,PL_savestack,96,ANY);	421	New(54,PL_savestack,64,ANY);
481	PL_savestack_ix = 0;	422	PL_savestack_ix = 0;
482	PL_savestack_max = 96;	423	PL_savestack_max = 64;
483		424
		425	#if !PERL_VERSION_ATLEAST (5,9,0)
484	New(54,PL_retstack,8,OP*);	426	New(54,PL_retstack,16,OP*);
485	PL_retstack_ix = 0;	427	PL_retstack_ix = 0;
486	PL_retstack_max = 8;	428	PL_retstack_max = 16;
		429	#endif
487	}	430	}
488		431
489	/*	432	/*
490	* destroy the stacks, the callchain etc...	433	* destroy the stacks, the callchain etc...
491	* still there is a memleak of 128 bytes...
492	*/	434	*/
493	STATIC void	435	static void
494	destroy_stacks(pTHX)	436	coro_destroy_stacks ()
495	{	437	{
496	if (!IN_DESTRUCT)	438	if (!IN_DESTRUCT)
497	{	439	{
498	/* is this ugly, I ask? */	440	/* is this ugly, I ask? */
499	while (PL_scopestack_ix)	441	LEAVE_SCOPE (0);
500	LEAVE;
501		442
502	/* sure it is, but more important: is it correct?? :/ */	443	/* sure it is, but more important: is it correct?? :/ */
503	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
504	FREETMPS;	444	FREETMPS;
		445
		446	/POPSTACK_TO (PL_mainstack);//D//use/
505	}	447	}
506		448
507	while (PL_curstackinfo->si_next)	449	while (PL_curstackinfo->si_next)
508	PL_curstackinfo = PL_curstackinfo->si_next;	450	PL_curstackinfo = PL_curstackinfo->si_next;
509		451
510	while (PL_curstackinfo)	452	while (PL_curstackinfo)
511	{	453	{
512	PERL_SI *p = PL_curstackinfo->si_prev;	454	PERL_SI *p = PL_curstackinfo->si_prev;
513		455
514	{	456	{ /D//remove/
515	dSP;	457	dSP;
516	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
517	PUTBACK; /* possibly superfluous */	459	PUTBACK; /* possibly superfluous */
518	}	460	}
519		461
520	if (!IN_DESTRUCT)	462	if (!IN_DESTRUCT)
521	{	463	{
522	dounwind(-1);	464	dounwind (-1);/D//remove/
523	SvREFCNT_dec(PL_curstackinfo->si_stack);	465	SvREFCNT_dec (PL_curstackinfo->si_stack);
524	}	466	}
525		467
526	Safefree(PL_curstackinfo->si_cxstack);	468	Safefree (PL_curstackinfo->si_cxstack);
527	Safefree(PL_curstackinfo);	469	Safefree (PL_curstackinfo);
528	PL_curstackinfo = p;	470	PL_curstackinfo = p;
529	}	471	}
530		472
531	Safefree(PL_tmps_stack);	473	Safefree (PL_tmps_stack);
532	Safefree(PL_markstack);	474	Safefree (PL_markstack);
533	Safefree(PL_scopestack);	475	Safefree (PL_scopestack);
534	Safefree(PL_savestack);	476	Safefree (PL_savestack);
		477	#if !PERL_VERSION_ATLEAST (5,9,0)
535	Safefree(PL_retstack);	478	Safefree (PL_retstack);
536	}
537
538	static void
539	allocate_stack (Coro__State ctx, int alloc)
540	{
541	coro_stack *stack;
542
543	New (0, stack, 1, coro_stack);
544
545	stack->refcnt = 1;
546	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;
548	if (alloc)
549	{
550	#if HAVE_MMAP
551	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
552	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
553	if (stack->sptr == (void *)-1)
554	#endif	479	#endif
555	{
556	/FIXME//D//* reasonable stack size! */
557	stack->ssize = -4096 * sizeof (long);
558	New (0, stack->sptr, 4096, long);
559	}
560	}
561	else
562	stack->sptr = 0;
563
564	ctx->stack = stack;
565	}	480	}
566		481
567	static void	482	static void
568	deallocate_stack (Coro__State ctx)	483	setup_coro (struct coro *coro)
569	{
570	coro_stack *stack = ctx->stack;
571
572	ctx->stack = 0;
573
574	if (stack)
575	{
576	if (!--stack->refcnt)
577	{
578	#ifdef HAVE_MMAP
579	if (stack->ssize > 0 && stack->sptr)
580	munmap (stack->sptr, stack->ssize);
581	else
582	#else
583	Safefree (stack->sptr);
584	#endif
585	Safefree (stack);
586	}
587	else if (ctx->gencnt == stack->gencnt)
588	--stack->usecnt;
589	}
590	}
591
592	static void
593	setup_coro (void *arg)
594	{	484	{
595	/*	485	/*
596	* emulate part of the perl startup here.	486	* emulate part of the perl startup here.
597	*/	487	*/
598	dSP;
599	Coro__State ctx = (Coro__State)arg;
600	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
601		488
602	coro_init_stacks (aTHX);	489	coro_init_stacks ();
603	PL_curpm = 0; /* segfault on first access */	490
604	/PL_curcop = 0;/	491	PL_curcop = &PL_compiling;
605	/PL_in_eval = PL_in_eval;/ /* inherit */	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
606	SvREFCNT_dec (GvAV (PL_defgv));	505	SvREFCNT_dec (GvAV (PL_defgv));
607	GvAV (PL_defgv) = ctx->args;	506	GvAV (PL_defgv) = coro->args; coro->args = 0;
608		507
609	SPAGAIN;
610
611	if (ctx->stack)
612	{
613	ctx->cursp = 0;
614
615	PUSHMARK(SP);
616	PUTBACK;
617	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
618
619	if (SvTRUE (ERRSV))
620	croak (NULL);
621	else
622	croak ("FATAL: CCTXT coroutine returned!");
623	}
624	else
625	{
626	UNOP myop;
627
628	PL_op = (OP *)&myop;
629
630	Zero(&myop, 1, UNOP);	508	Zero (&myop, 1, LOGOP);
631	myop.op_next = Nullop;	509	myop.op_next = Nullop;
632	myop.op_flags = OPf_WANT_VOID;	510	myop.op_flags = OPf_WANT_VOID;
633		511
		512	PL_op = (OP *)&myop;
		513
634	PUSHMARK(SP);	514	PUSHMARK (SP);
635	XPUSHs (sub_init);	515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
636	/*
637	* the next line is slightly wrong, as PL_op->op_next
638	* is actually being executed so we skip the first op.
639	* that doesn't matter, though, since it is only
640	* pp_nextstate and we never return...
641	* ah yes, and I don't care anyways ;)
642	*/
643	PUTBACK;	516	PUTBACK;
644	PL_op = pp_entersub();	517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
645	SPAGAIN;	518	SPAGAIN;
		519	}
646		520
647	ENTER; /* necessary e.g. for dounwind */	521	ENTER; /* necessary e.g. for dounwind */
648	}
649	}	522	}
650		523
651	static void	524	static void
652	continue_coro (void *arg)	525	free_coro_mortal ()
653	{	526	{
654	/*
655	* this is a _very_ stripped down perl interpreter ;)
656	*/
657	Coro__State ctx = (Coro__State)arg;
658	JMPENV coro_start_env;
659
660	/* same as JMPENV_BOOTSTRAP */
661	Zero(&coro_start_env, 1, JMPENV);
662	coro_start_env.je_ret = -1;
663	coro_start_env.je_mustcatch = TRUE;
664	PL_top_env = &coro_start_env;
665
666	ctx->cursp = 0;
667	PL_op = PL_op->op_next;
668	CALLRUNOPS(aTHX);
669
670	abort ();
671	}
672
673	STATIC void
674	transfer(pTHX_ struct coro prev, struct coro next, int flags)
675	{
676	dSTACKLEVEL;
677	static struct coro *xnext;
678
679	if (prev != next)
680	{
681	xnext = next;
682
683	if (next->mainstack)
684	{
685	SAVE (prev, flags);
686	LOAD (next);
687
688	/* mark this state as in-use */
689	next->mainstack = 0;
690	next->tmps_ix = -2;
691
692	/* stacklevel changed? if yes, grab the stack for us! */
693	if (flags & TRANSFER_SAVE_CCTXT)
694	{
695	if (!prev->stack)
696	allocate_stack (prev, 0);
697	else if (prev->cursp != stacklevel
698	&& prev->stack->usecnt > 1)
699	{
700	prev->gencnt = ++prev->stack->gencnt;
701	prev->stack->usecnt = 1;
702	}
703
704	/* has our stack been invalidated? */
705	if (next->stack && next->stack->gencnt != next->gencnt)
706	{
707	deallocate_stack (next);
708	allocate_stack (next, 1);
709	coro_create (&(next->stack->cctx),
710	continue_coro, (void *)next,
711	next->stack->sptr, labs (next->stack->ssize));
712	}
713
714	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
715	/* don't add any code here */
716	}
717
718	}
719	else if (next->tmps_ix == -2)
720	croak ("tried to transfer to running coroutine");
721	else
722	{
723	SAVE (prev, -1); /* first get rid of the old state */
724
725	if (flags & TRANSFER_SAVE_CCTXT)
726	{
727	if (!prev->stack)
728	allocate_stack (prev, 0);
729
730	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
731	{
732	setup_coro (next);
733
734	prev->stack->refcnt++;
735	prev->stack->usecnt++;
736	next->stack = prev->stack;
737	next->gencnt = prev->gencnt;
738	}
739	else
740	{
741	allocate_stack (next, 1);
742	coro_create (&(next->stack->cctx),
743	setup_coro, (void *)next,
744	next->stack->sptr, labs (next->stack->ssize));
745	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
746	/* don't add any code here */
747	}
748	}
749	else
750	setup_coro (next);
751	}
752
753	/*
754	* xnext is now either prev or next, depending on wether
755	* we switched the c stack or not. that's why i use a global
756	* variable, that should become thread-specific at one point.
757	*/
758	xnext->cursp = stacklevel;
759	}
760
761	if (coro_mortal)	527	if (coro_mortal)
762	{	528	{
763	SvREFCNT_dec (coro_mortal);	529	SvREFCNT_dec (coro_mortal);
764	coro_mortal = 0;	530	coro_mortal = 0;
765	}	531	}
766	}	532	}
767		533
768	#define SV_CORO(sv,func) \	534	static void NOINLINE
769	do { \	535	prepare_cctx (coro_cctx *cctx)
770	if (SvROK (sv)) \	536	{
771	sv = SvRV (sv); \	537	dSP;
772	\	538	LOGOP myop;
773	if (SvTYPE(sv) == SVt_PVHV) \
774	{ \
775	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
776	\
777	if (!he) \
778	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
779	\
780	(sv) = SvRV (HeVAL(he)); \
781	} \
782	\
783	/* must also be changed inside Coro::Cont::yield */ \
784	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
785	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
786	\
787	} while(0)
788		539
789	#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;
790		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)
		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
791	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
792	api_transfer(pTHX_ SV prev, SV next, int flags)	869	api_transfer (SV prev, SV next, int flags)
793	{	870	{
794	SV_CORO (prev, "Coro::transfer");	871	struct transfer_args ta;
795	SV_CORO (next, "Coro::transfer");
796		872
797	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	873	prepare_transfer (&ta, prev, next, flags);
		874	TRANSFER (ta);
798	}	875	}
799		876
800	/ Coro ******************************************************************/	877	/ Coro ******************************************************************/
801		878
802	#define PRIO_MAX 3	879	#define PRIO_MAX 3
…		…
805	#define PRIO_LOW -1	882	#define PRIO_LOW -1
806	#define PRIO_IDLE -3	883	#define PRIO_IDLE -3
807	#define PRIO_MIN -4	884	#define PRIO_MIN -4
808		885
809	/* for Coro.pm */	886	/* for Coro.pm */
810	static GV coro_current, coro_idle;	887	static SV *coro_current;
811	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
812	static int coro_nready;	889	static int coro_nready;
813		890
814	static void	891	static void
815	coro_enq (SV *sv)	892	coro_enq (SV *coro_sv)
816	{	893	{
817	if (SvTYPE (sv) == SVt_PVHV)
818	{
819	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
820	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
821
822	prio = prio > PRIO_MAX ? PRIO_MAX
823	: prio < PRIO_MIN ? PRIO_MIN
824	: prio;
825
826	av_push (coro_ready [prio - PRIO_MIN], sv);	894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
827	coro_nready++;	895	coro_nready++;
828
829	return;
830	}
831
832	croak ("Coro::ready tried to enqueue something that is not a coroutine");
833	}	896	}
834		897
835	static SV *	898	static SV *
836	coro_deq (int min_prio)	899	coro_deq (int min_prio)
837	{	900	{
…		…
840	min_prio -= PRIO_MIN;	903	min_prio -= PRIO_MIN;
841	if (min_prio < 0)	904	if (min_prio < 0)
842	min_prio = 0;	905	min_prio = 0;
843		906
844	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	907	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
845	if (av_len (coro_ready[prio]) >= 0)	908	if (AvFILLp (coro_ready [prio]) >= 0)
846	{	909	{
847	coro_nready--;	910	coro_nready--;
848	return av_shift (coro_ready[prio]);	911	return av_shift (coro_ready [prio]);
849	}	912	}
850		913
851	return 0;	914	return 0;
852	}	915	}
853		916
854	static void	917	static int
855	api_ready (SV *coro)	918	api_ready (SV *coro_sv)
856	{	919	{
		920	struct coro *coro;
		921
857	if (SvROK (coro))	922	if (SvROK (coro_sv))
858	coro = SvRV (coro);	923	coro_sv = SvRV (coro_sv);
859		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;
860	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);
861	}	1005	}
862		1006
863	static void	1007	static void
864	api_schedule (void)	1008	api_schedule (void)
865	{	1009	{
866	SV prev, next;	1010	struct transfer_args ta;
867		1011
868	prev = SvRV (GvSV (coro_current));	1012	prepare_schedule (&ta);
869	next = coro_deq (PRIO_MIN);	1013	TRANSFER (ta);
870
871	if (!next)
872	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
873
874	/* free this only after the transfer */
875	coro_mortal = prev;
876	SV_CORO (prev, "Coro::schedule");
877
878	SvRV (GvSV (coro_current)) = next;
879
880	SV_CORO (next, "Coro::schedule");
881
882	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
883	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
884	}	1014	}
885		1015
886	static void	1016	static void
887	api_cede (void)	1017	api_cede (void)
888	{	1018	{
889	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	1019	struct transfer_args ta;
890		1020
891	api_schedule ();	1021	prepare_cede (&ta);
		1022	TRANSFER (ta);
892	}	1023	}
893		1024
894	MODULE = Coro::State PACKAGE = Coro::State	1025	MODULE = Coro::State PACKAGE = Coro::State
895		1026
896	PROTOTYPES: ENABLE	1027	PROTOTYPES: DISABLE
897		1028
898	BOOT:	1029	BOOT:
899	{ /* {} necessary for stoopid perl-5.6.x */	1030	{
900	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1031	#ifdef USE_ITHREADS
901	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1032	MUTEX_INIT (&coro_mutex);
		1033	#endif
		1034	BOOT_PAGESIZE;
		1035
902	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1036	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
903		1037
904	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1038	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
905	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1039	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
906	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1040	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
907	newCONSTSUB (coro_state_stash, "SAVE_CURPM", newSViv (TRANSFER_SAVE_CURPM));
908	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
909
910	if (!padlist_cache)
911	padlist_cache = newHV ();
912		1041
913	main_mainstack = PL_mainstack;	1042	main_mainstack = PL_mainstack;
914		1043
915	coroapi.ver = CORO_API_VERSION;	1044	coroapi.ver = CORO_API_VERSION;
916	coroapi.transfer = api_transfer;	1045	coroapi.transfer = api_transfer;
917	}
918		1046
919	Coro::State	1047	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
920	_newprocess(args)	1048	}
921	SV * args	1049
922	PROTOTYPE: $	1050	SV *
		1051	new (char *klass, ...)
923	CODE:	1052	CODE:
924	Coro__State coro;	1053	{
		1054	struct coro *coro;
		1055	HV *hv;
		1056	int i;
925		1057
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);	1058	Newz (0, coro, 1, struct coro);
		1059	coro->args = newAV ();
		1060	coro->flags = CF_NEW;
930		1061
931	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1062	hv = newHV ();
932	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;
933	coro->stack = 0;	1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
934		1065
935	RETVAL = coro;	1066	for (i = 1; i < items; i++)
		1067	av_push (coro->args, newSVsv (ST (i)));
		1068	}
936	OUTPUT:	1069	OUTPUT:
937	RETVAL	1070	RETVAL
938		1071
939	void	1072	void
940	transfer(prev, next, flags)	1073	_set_stacklevel (...)
941	SV *prev	1074	ALIAS:
942	SV *next	1075	Coro::State::transfer = 1
943	int flags	1076	Coro::schedule = 2
944	PROTOTYPE: @	1077	Coro::cede = 3
945	CODE:	1078	CODE:
946	PUTBACK;	1079	{
947	SV_CORO (next, "Coro::transfer");	1080	struct transfer_args ta;
948	SV_CORO (prev, "Coro::transfer");	1081
949	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1082	switch (ix)
950	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	}
951		1108
952	void	1109	void
953	DESTROY(coro)	1110	_clone_state_from (SV dst, SV src)
954	Coro::State coro	1111	CODE:
955	CODE:	1112	{
		1113	struct coro *coro_src = SvSTATE (src);
956		1114
957	if (coro->mainstack && coro->mainstack != main_mainstack)	1115	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
958	{
959	struct coro temp;
960		1116
961	PUTBACK;	1117	++coro_src->refcnt;
962	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;
963	LOAD(aTHX_ coro);	1119	}
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		1120
978	void	1121	void
979	flush()
980	CODE:
981	#ifdef MAY_FLUSH
982	flush_padlist_cache ();
983	#endif
984
985	void
986	_exit(code)	1122	_exit (code)
987	int code	1123	int code
988	PROTOTYPE: $	1124	PROTOTYPE: $
989	CODE:	1125	CODE:
990	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
991	_exit (code);	1126	_exit (code);
992	#else
993	signal (SIGTERM, SIG_DFL);
994	raise (SIGTERM);
995	exit (code);
996	#endif
997		1127
998	MODULE = Coro::State PACKAGE = Coro::Cont	1128	int
		1129	cctx_count ()
		1130	CODE:
		1131	RETVAL = cctx_count;
		1132	OUTPUT:
		1133	RETVAL
999		1134
1000	# this is slightly dirty (should expose a c-level api)	1135	int
1001		1136	cctx_idle ()
1002	void	1137	CODE:
1003	yield(...)	1138	RETVAL = cctx_idle;
1004	PROTOTYPE: @	1139	OUTPUT:
1005	CODE:	1140	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		1141
1028	MODULE = Coro::State PACKAGE = Coro	1142	MODULE = Coro::State PACKAGE = Coro
1029		1143
1030	# this is slightly dirty (should expose a c-level api)
1031
1032	BOOT:	1144	BOOT:
1033	{	1145	{
1034	int i;	1146	int i;
		1147
1035	HV *stash = gv_stashpv ("Coro", TRUE);	1148	coro_stash = gv_stashpv ("Coro", TRUE);
1036		1149
1037	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1150	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1038	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1151	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1039	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1040	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1041	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1042	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1043		1156
1044	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1157	coro_current = get_sv ("Coro::current", FALSE);
1045	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1158	SvREADONLY_on (coro_current);
1046		1159
1047	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1048	coro_ready[i] = newAV ();	1161	coro_ready[i] = newAV ();
1049		1162
1050	{	1163	{
1051	SV *sv = perl_get_sv("Coro::API", 1);	1164	SV *sv = perl_get_sv("Coro::API", 1);
1052		1165
1053	coroapi.schedule = api_schedule;	1166	coroapi.schedule = api_schedule;
1054	coroapi.cede = api_cede;	1167	coroapi.cede = api_cede;
1055	coroapi.ready = api_ready;	1168	coroapi.ready = api_ready;
		1169	coroapi.is_ready = api_is_ready;
1056	coroapi.nready = &coro_nready;	1170	coroapi.nready = &coro_nready;
1057	coroapi.current = coro_current;	1171	coroapi.current = coro_current;
1058		1172
1059	GCoroAPI = &coroapi;	1173	GCoroAPI = &coroapi;
1060	sv_setiv(sv, (IV)&coroapi);	1174	sv_setiv (sv, (IV)&coroapi);
1061	SvREADONLY_on(sv);	1175	SvREADONLY_on (sv);
1062	}	1176	}
1063	}	1177	}
1064		1178
1065	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 *
1066	ready(self)	1200	ready (SV *self)
1067	SV * self
1068	PROTOTYPE: $	1201	PROTOTYPE: $
1069	CODE:	1202	CODE:
1070	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
1071		1214
1072	int	1215	int
1073	nready(...)	1216	nready (...)
1074	PROTOTYPE:	1217	PROTOTYPE:
1075	CODE:	1218	CODE:
1076	RETVAL = coro_nready;	1219	RETVAL = coro_nready;
1077	OUTPUT:	1220	OUTPUT:
1078	RETVAL	1221	RETVAL
1079		1222
1080	void	1223	void
1081	schedule(...)	1224	_set_current (SV *current)
1082	PROTOTYPE:	1225	PROTOTYPE: $
1083	CODE:	1226	CODE:
1084	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
1085		1252
1086	void	1253	void
1087	cede(...)	1254	_set_state (char *data_)
1088	PROTOTYPE:	1255	PROTOTYPE: $
1089	CODE:	1256	CODE:
1090	api_cede ();	1257	{
		1258	struct {
		1259	int errorno;
		1260	int laststype;
		1261	int laststatval;
		1262	Stat_t statcache;
		1263	} data = (void )data_;
1091		1264
		1265	errno = data->errorno;
		1266	PL_laststype = data->laststype;
		1267	PL_laststatval = data->laststatval;
		1268	PL_statcache = data->statcache;
		1269	}

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.40 by root, Tue Nov 27 01:41:41 2001 UTC vs. Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.40 by root, Tue Nov 27 01:41:41 2001 UTC vs.
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC