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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.22 by root, Sat Aug 11 23:10:56 2001 UTC vs.
Revision 1.125 by root, Mon Dec 11 20:54:45 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
		43	/* 5.8.7 */
		44	#ifndef SvRV_set
		45	# define SvRV_set(s,v) SvRV(s) = (v)
		46	#endif
		47
7	#include <signal.h>	48	#include <stdio.h>
		49	#include <errno.h>
		50	#include <assert.h>
		51
		52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		53	# undef STACKGUARD
		54	#endif
		55
		56	#ifndef STACKGUARD
		57	# define STACKGUARD 0
		58	#endif
8		59
9	#ifdef HAVE_MMAP	60	#ifdef HAVE_MMAP
10	# include <unistd.h>	61	# include <unistd.h>
11	# include <sys/mman.h>	62	# include <sys/mman.h>
12	# ifndef MAP_ANON
13	# ifdef MAP_ANONYMOUS	63	# ifndef MAP_ANONYMOUS
14	# define MAP_ANON MAP_ANONYMOUS	64	# ifdef MAP_ANON
		65	# define MAP_ANONYMOUS MAP_ANON
15	# else	66	# else
16	# undef HAVE_MMAP	67	# undef HAVE_MMAP
17	# endif	68	# endif
18	# endif	69	# endif
		70	# include <limits.h>
		71	# ifndef PAGESIZE
		72	# define PAGESIZE pagesize
		73	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		74	static long pagesize;
		75	# else
		76	# define BOOT_PAGESIZE (void)0
19	#endif	77	# endif
20
21	#define MAY_FLUSH /* increases codesize */
22
23	/* perl-related */
24	#define TRANSFER_SAVE_DEFAV 0x00000001
25	#define TRANSFER_SAVE_DEFSV 0x00000002
26	#define TRANSFER_SAVE_ERRSV 0x00000004
27	/* c-related */
28	#define TRANSFER_SAVE_CCTXT 0x00000008
29	#ifdef CORO_LAZY_STACK
30	# define TRANSFER_LAZY_STACK 0x00000010
31	#else	78	#else
32	# define TRANSFER_LAZY_STACK 0x00000000	79	# define PAGESIZE 0
		80	# define BOOT_PAGESIZE (void)0
33	#endif	81	#endif
34		82
35	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
36	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
37
38	#define SUB_INIT "Coro::State::initialize"
39	#define UCORO_STATE "_coro_state"
40
41	/* The next macro should delcare a variable stacklevel that contains and approximation	83	/* The next macro should declare a variable stacklevel that contains and approximation
42	* to the current C stack pointer. It's property is that it changes with each call	84	* to the current C stack pointer. Its property is that it changes with each call
43	* and should be unique. */	85	* and should be unique. */
		86	#define dSTACKLEVEL int stacklevel
44	#define dSTACKLEVEL void *stacklevel = &stacklevel	87	#define STACKLEVEL ((void *)&stacklevel)
45		88
46	#define labs(l) ((l) >= 0 ? (l) : -(l))	89	#define IN_DESTRUCT (PL_main_cv == Nullcv)
47		90
48	/* this is actually not only the c stack but also c registers etc... */	91	#if __GNUC__ >= 3
		92	# define attribute(x) __attribute__(x)
		93	#else
		94	# define attribute(x)
		95	#endif
		96
		97	#define NOINLINE attribute ((noinline))
		98
		99	#include "CoroAPI.h"
		100
		101	#ifdef USE_ITHREADS
		102	static perl_mutex coro_mutex;
		103	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		104	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		105	#else
		106	# define LOCK (void)0
		107	# define UNLOCK (void)0
		108	#endif
		109
		110	struct io_state
		111	{
		112	int errorno;
		113	I32 laststype;
		114	int laststatval;
		115	Stat_t statcache;
		116	};
		117
		118	static struct CoroAPI coroapi;
		119	static AV main_mainstack; / used to differentiate between $main and others */
		120	static HV coro_state_stash, coro_stash;
		121	static SV coro_mortal; / will be freed after next transfer */
		122
		123	static struct coro_cctx *cctx_first;
		124	static int cctx_count, cctx_idle;
		125
		126	/* this is a structure representing a c-level coroutine */
49	typedef struct {	127	typedef struct coro_cctx {
50	int refcnt; /* pointer reference counter */	128	struct coro_cctx *next;
51	int usecnt; /* shared by how many coroutines */
52	int gencnt; /* generation counter */
53		129
54	coro_context cctx;	130	/* the stack */
55
56	void *sptr;	131	void *sptr;
57	long ssize; /* positive == mmap, otherwise malloc */	132	long ssize; /* positive == mmap, otherwise malloc */
58	} coro_stack;
59		133
		134	/* cpu state */
		135	void idle_sp; / sp of top-level transfer/schedule/cede call */
		136	JMPENV *top_env;
		137	coro_context cctx;
		138
		139	int inuse;
		140
		141	#if USE_VALGRIND
		142	int valgrind_id;
		143	#endif
		144	} coro_cctx;
		145
		146	enum {
		147	CF_RUNNING = 0x0001, /* coroutine is running */
		148	CF_READY = 0x0002, /* coroutine is ready */
		149	CF_NEW = 0x0004, /* ahs never been switched to */
		150	};
		151
		152	/* this is a structure representing a perl-level coroutine */
60	struct coro {	153	struct coro {
61	/* the optional C context */	154	/* the c coroutine allocated to this perl coroutine, if any */
62	coro_stack *stack;	155	coro_cctx *cctx;
63	void *cursp;
64	int gencnt;
65
66	/* optionally saved, might be zero */
67	AV *defav;
68	SV *defsv;
69	SV *errsv;
70
71	/* saved global state not related to stacks */
72	U8 dowarn;
73	I32 in_eval;
74
75	/* the stacks and related info (callchain etc..) */
76	PERL_SI *curstackinfo;
77	AV *curstack;
78	AV *mainstack;
79	SV **stack_sp;
80	OP *op;
81	SV **curpad;
82	SV **stack_base;
83	SV **stack_max;
84	SV **tmps_stack;
85	I32 tmps_floor;
86	I32 tmps_ix;
87	I32 tmps_max;
88	I32 *markstack;
89	I32 *markstack_ptr;
90	I32 *markstack_max;
91	I32 *scopestack;
92	I32 scopestack_ix;
93	I32 scopestack_max;
94	ANY *savestack;
95	I32 savestack_ix;
96	I32 savestack_max;
97	OP **retstack;
98	I32 retstack_ix;
99	I32 retstack_max;
100	COP *curcop;
101	JMPENV *top_env;
102		156
103	/* data associated with this coroutine (initial args) */	157	/* data associated with this coroutine (initial args) */
104	AV *args;	158	AV *args;
		159	int refcnt;
		160	int save; /* CORO_SAVE flags */
		161	int flags; /* CF_ flags */
		162
		163	/* optionally saved, might be zero */
		164	AV defav; / @_ */
		165	SV defsv; / $_ */
		166	SV errsv; / $@ */
		167	SV irssv; / $/ */
		168	SV irssv_sv; / real $/ cache */
		169
		170	#define VAR(name,type) type name;
		171	# include "state.h"
		172	#undef VAR
		173
		174	/* coro process data */
		175	int prio;
105	};	176	};
106		177
107	typedef struct coro *Coro__State;	178	typedef struct coro *Coro__State;
108	typedef struct coro *Coro__State_or_hashref;	179	typedef struct coro *Coro__State_or_hashref;
109		180
110	static AV main_mainstack; / used to differentiate between $main and others */	181	static AV *
111	static HV *coro_state_stash;	182	coro_clone_padlist (CV *cv)
112	static SV *ucoro_state_sv;
113	static U32 ucoro_state_hash;
114	static HV *padlist_cache;
115
116	/* mostly copied from op.c:cv_clone2 */
117	STATIC AV *
118	clone_padlist (AV *protopadlist)
119	{	183	{
120	AV *av;	184	AV *padlist = CvPADLIST (cv);
121	I32 ix;
122	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
123	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
124	SV **pname = AvARRAY (protopad_name);
125	SV **ppad = AvARRAY (protopad);
126	I32 fname = AvFILLp (protopad_name);
127	I32 fpad = AvFILLp (protopad);
128	AV newpadlist, newpad_name, *newpad;	185	AV newpadlist, newpad;
129	SV **npad;
130
131	newpad_name = newAV ();
132	for (ix = fname; ix >= 0; ix--)
133	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
134
135	newpad = newAV ();
136	av_fill (newpad, AvFILLp (protopad));
137	npad = AvARRAY (newpad);
138		186
139	newpadlist = newAV ();	187	newpadlist = newAV ();
140	AvREAL_off (newpadlist);	188	AvREAL_off (newpadlist);
141	av_store (newpadlist, 0, (SV *) newpad_name);	189	#if PERL_VERSION_ATLEAST (5,9,0)
		190	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		191	#else
		192	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		193	#endif
		194	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		195	--AvFILLp (padlist);
		196
		197	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
142	av_store (newpadlist, 1, (SV *) newpad);	198	av_store (newpadlist, 1, (SV *)newpad);
143		199
144	av = newAV (); /* will be @_ */	200	return newpadlist;
145	av_extend (av, 0);	201	}
146	av_store (newpad, 0, (SV *) av);
147	AvFLAGS (av) = AVf_REIFY;
148		202
149	for (ix = fpad; ix > 0; ix--)	203	static void
		204	free_padlist (AV *padlist)
		205	{
		206	/* may be during global destruction */
		207	if (SvREFCNT (padlist))
150	{	208	{
151	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	209	I32 i = AvFILLp (padlist);
152	if (namesv && namesv != &PL_sv_undef)	210	while (i >= 0)
153	{	211	{
154	char name = SvPVX (namesv); / XXX */	212	SV **svp = av_fetch (padlist, i--, FALSE);
155	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	213	if (svp)
156	{ /* lexical from outside? */
157	npad[ix] = SvREFCNT_inc (ppad[ix]);
158	}	214	{
159	else
160	{ /* our own lexical */
161	SV *sv;	215	SV *sv;
162	if (*name == '&')	216	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
163	sv = SvREFCNT_inc (ppad[ix]);	217	SvREFCNT_dec (sv);
164	else if (*name == '@')	218
165	sv = (SV *) newAV ();	219	SvREFCNT_dec (*svp);
166	else if (*name == '%')
167	sv = (SV *) newHV ();
168	else
169	sv = NEWSV (0, 0);
170	if (!SvPADBUSY (sv))
171	SvPADMY_on (sv);
172	npad[ix] = sv;
173	}	220	}
174	}	221	}
175	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	222
176	{	223	SvREFCNT_dec ((SV*)padlist);
177	npad[ix] = SvREFCNT_inc (ppad[ix]);
178	}
179	else
180	{
181	SV *sv = NEWSV (0, 0);
182	SvPADTMP_on (sv);
183	npad[ix] = sv;
184	}
185	}	224	}
		225	}
186		226
187	#if 0 /* return -ENOTUNDERSTOOD */	227	static int
188	/* Now that vars are all in place, clone nested closures. */	228	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		229	{
		230	AV *padlist;
		231	AV av = (AV )mg->mg_obj;
189		232
190	for (ix = fpad; ix > 0; ix--) {	233	/* casting is fun. */
191	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
192	if (namesv	235	free_padlist (padlist);
193	&& namesv != &PL_sv_undef	236
194	&& !(SvFLAGS(namesv) & SVf_FAKE)	237	SvREFCNT_dec (av);
195	&& *SvPVX(namesv) == '&'	238
196	&& CvCLONE(ppad[ix]))	239	return 0;
197	{	240	}
198	CV kid = cv_clone((CV)ppad[ix]);	241
199	SvREFCNT_dec(ppad[ix]);	242	#define PERL_MAGIC_coro PERL_MAGIC_ext
200	CvCLONE_on(kid);	243
201	SvPADMY_on(kid);	244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
202	npad[ix] = (SV*)kid;	245
203	}	246	#define CORO_MAGIC(cv) \
		247	SvMAGIC (cv) \
		248	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		249	? SvMAGIC (cv) \
		250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		251	: 0
		252
		253	/* the next two functions merely cache the padlists */
		254	static void
		255	get_padlist (CV *cv)
		256	{
		257	MAGIC *mg = CORO_MAGIC (cv);
		258	AV *av;
		259
		260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
		261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
		262	else
		263	{
		264	#if 0
		265	/* this is probably cleaner, but also slower? */
		266	CV *cp = Perl_cv_clone (cv);
		267	CvPADLIST (cv) = CvPADLIST (cp);
		268	CvPADLIST (cp) = 0;
		269	SvREFCNT_dec (cp);
		270	#else
		271	CvPADLIST (cv) = coro_clone_padlist (cv);
		272	#endif
		273	}
		274	}
		275
		276	static void
		277	put_padlist (CV *cv)
		278	{
		279	MAGIC *mg = CORO_MAGIC (cv);
		280	AV *av;
		281
		282	if (!mg)
		283	{
		284	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		285	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		286	mg->mg_virtual = &vtbl_coro;
		287	mg->mg_obj = (SV *)newAV ();
204	}	288	}
205	#endif
206		289
207	return newpadlist;	290	av = (AV *)mg->mg_obj;
208	}
209		291
210	#ifdef MAY_FLUSH	292	if (AvFILLp (av) >= AvMAX (av))
211	STATIC AV *	293	av_extend (av, AvMAX (av) + 1);
212	free_padlist (AV *padlist)
213	{
214	/* may be during global destruction */
215	if (SvREFCNT(padlist))
216	{
217	I32 i = AvFILLp(padlist);
218	while (i >= 0)
219	{
220	SV **svp = av_fetch(padlist, i--, FALSE);
221	SV sv = svp ? svp : Nullsv;
222	if (sv)
223	SvREFCNT_dec(sv);
224	}
225		294
226	SvREFCNT_dec((SV*)padlist);	295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
227	}
228	}	296	}
229	#endif
230
231	/* the next two functions merely cache the padlists */
232	STATIC void
233	get_padlist (CV *cv)
234	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
236
237	if (he && AvFILLp ((AV )he) >= 0)
238	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
239	else
240	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
241	}
242
243	STATIC void
244	put_padlist (CV *cv)
245	{
246	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
247
248	if (SvTYPE (*he) != SVt_PVAV)
249	{
250	SvREFCNT_dec (*he);
251	he = (SV )newAV ();
252	}
253
254	av_push ((AV )he, (SV *)CvPADLIST (cv));
255	}
256
257	#ifdef MAY_FLUSH
258	STATIC void
259	flush_padlist_cache ()
260	{
261	HV *hv = padlist_cache;
262	padlist_cache = newHV ();
263
264	if (hv_iterinit (hv))
265	{
266	HE *he;
267	AV *padlist;
268
269	while (!!(he = hv_iternext (hv)))
270	{
271	AV av = (AV )HeVAL(he);
272
273	/* casting is fun. */
274	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
275	free_padlist (padlist);
276	}
277	}
278
279	SvREFCNT_dec (hv);
280	}
281	#endif
282		297
283	#define SB do {	298	#define SB do {
284	#define SE } while (0)	299	#define SE } while (0)
285		300
286	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE
287	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE
288
289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
290		302
291	static void	303	static void
292	load_state(pTHX_ Coro__State c)	304	load_perl (Coro__State c)
293	{	305	{
294	PL_dowarn = c->dowarn;	306	#define VAR(name,type) PL_ ## name = c->name;
295	PL_in_eval = c->in_eval;	307	# include "state.h"
296		308	#undef VAR
297	PL_curstackinfo = c->curstackinfo;
298	PL_curstack = c->curstack;
299	PL_mainstack = c->mainstack;
300	PL_stack_sp = c->stack_sp;
301	PL_op = c->op;
302	PL_curpad = c->curpad;
303	PL_stack_base = c->stack_base;
304	PL_stack_max = c->stack_max;
305	PL_tmps_stack = c->tmps_stack;
306	PL_tmps_floor = c->tmps_floor;
307	PL_tmps_ix = c->tmps_ix;
308	PL_tmps_max = c->tmps_max;
309	PL_markstack = c->markstack;
310	PL_markstack_ptr = c->markstack_ptr;
311	PL_markstack_max = c->markstack_max;
312	PL_scopestack = c->scopestack;
313	PL_scopestack_ix = c->scopestack_ix;
314	PL_scopestack_max = c->scopestack_max;
315	PL_savestack = c->savestack;
316	PL_savestack_ix = c->savestack_ix;
317	PL_savestack_max = c->savestack_max;
318	PL_retstack = c->retstack;
319	PL_retstack_ix = c->retstack_ix;
320	PL_retstack_max = c->retstack_max;
321	PL_curcop = c->curcop;
322	PL_top_env = c->top_env;
323		309
324	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
325	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
326	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		313	if (c->irssv)
		314	{
		315	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		316	SvREFCNT_dec (c->irssv);
		317	else
		318	{
		319	REPLACE_SV (PL_rs, c->irssv);
		320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		321	sv_setsv (c->irssv_sv, PL_rs);
		322	}
		323	}
327		324
328	{	325	{
329	dSP;	326	dSP;
330	CV *cv;	327	CV *cv;
331		328
332	/* now do the ugly restore mess */	329	/* now do the ugly restore mess */
333	while ((cv = (CV *)POPs))	330	while ((cv = (CV *)POPs))
334	{	331	{
335	AV padlist = (AV )POPs;
336
337	if (padlist)
338	{
339	put_padlist (cv); /* mark this padlist as available */	332	put_padlist (cv); /* mark this padlist as available */
340	CvPADLIST(cv) = padlist;	333	CvDEPTH (cv) = PTR2IV (POPs);
341	#ifdef USE_THREADS	334	CvPADLIST (cv) = (AV *)POPs;
342	/CvOWNER(cv) = (struct perl_thread )POPs;*/
343	#endif
344	}
345
346	++CvDEPTH(cv);
347	}	335	}
348		336
349	PUTBACK;	337	PUTBACK;
350	}	338	}
351	}	339	}
352		340
353	static void	341	static void
354	save_state(pTHX_ Coro__State c, int flags)	342	save_perl (Coro__State c)
355	{	343	{
356	{	344	{
357	dSP;	345	dSP;
358	I32 cxix = cxstack_ix;	346	I32 cxix = cxstack_ix;
359	PERL_CONTEXT *ccstk = cxstack;	347	PERL_CONTEXT *ccstk = cxstack;
366		354
367	PUSHs (Nullsv);	355	PUSHs (Nullsv);
368	/* this loop was inspired by pp_caller */	356	/* this loop was inspired by pp_caller */
369	for (;;)	357	for (;;)
370	{	358	{
371	do	359	while (cxix >= 0)
372	{	360	{
373	PERL_CONTEXT *cx = &ccstk[cxix--];	361	PERL_CONTEXT *cx = &ccstk[cxix--];
374		362
375	if (CxTYPE(cx) == CXt_SUB)	363	if (CxTYPE (cx) == CXt_SUB)
376	{	364	{
377	CV *cv = cx->blk_sub.cv;	365	CV *cv = cx->blk_sub.cv;
		366
378	if (CvDEPTH(cv))	367	if (CvDEPTH (cv))
379	{	368	{
380	#ifdef USE_THREADS
381	/XPUSHs ((SV )CvOWNER(cv));*/
382	/CvOWNER(cv) = 0;/
383	/error must unlock this cv etc.. etc.../
384	#endif
385	EXTEND (SP, CvDEPTH(cv)*2);	369	EXTEND (SP, 3);
386		370
387	while (--CvDEPTH(cv))
388	{
389	/* this tells the restore code to increment CvDEPTH */
390	PUSHs (Nullsv);
391	PUSHs ((SV *)cv);
392	}
393
394	PUSHs ((SV *)CvPADLIST(cv));	371	PUSHs ((SV *)CvPADLIST (cv));
		372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
396		374
		375	CvDEPTH (cv) = 0;
397	get_padlist (cv); /* this is a monster */	376	get_padlist (cv);
398	}	377	}
399	}	378	}
		379	#ifdef CXt_FORMAT
400	else if (CxTYPE(cx) == CXt_FORMAT)	380	else if (CxTYPE (cx) == CXt_FORMAT)
401	{	381	{
402	/* I never used formats, so how should I know how these are implemented? */	382	/* I never used formats, so how should I know how these are implemented? */
403	/* my bold guess is as a simple, plain sub... */	383	/* my bold guess is as a simple, plain sub... */
404	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	384	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
405	}	385	}
		386	#endif
406	}	387	}
407	while (cxix >= 0);
408		388
409	if (top_si->si_type == PERLSI_MAIN)	389	if (top_si->si_type == PERLSI_MAIN)
410	break;	390	break;
411		391
412	top_si = top_si->si_prev;	392	top_si = top_si->si_prev;
…		…
415	}	395	}
416		396
417	PUTBACK;	397	PUTBACK;
418	}	398	}
419		399
420	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
421	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
422	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
423		404
424	/* I have not the slightest idea of why av_reify is necessary */	405	#define VAR(name,type)c->name = PL_ ## name;
425	/* but if it's missing the defav contents magically get replaced sometimes */	406	# include "state.h"
426	if (c->defav)	407	#undef VAR
427	av_reify (c->defav);
428
429	c->dowarn = PL_dowarn;
430	c->in_eval = PL_in_eval;
431
432	c->curstackinfo = PL_curstackinfo;
433	c->curstack = PL_curstack;
434	c->mainstack = PL_mainstack;
435	c->stack_sp = PL_stack_sp;
436	c->op = PL_op;
437	c->curpad = PL_curpad;
438	c->stack_base = PL_stack_base;
439	c->stack_max = PL_stack_max;
440	c->tmps_stack = PL_tmps_stack;
441	c->tmps_floor = PL_tmps_floor;
442	c->tmps_ix = PL_tmps_ix;
443	c->tmps_max = PL_tmps_max;
444	c->markstack = PL_markstack;
445	c->markstack_ptr = PL_markstack_ptr;
446	c->markstack_max = PL_markstack_max;
447	c->scopestack = PL_scopestack;
448	c->scopestack_ix = PL_scopestack_ix;
449	c->scopestack_max = PL_scopestack_max;
450	c->savestack = PL_savestack;
451	c->savestack_ix = PL_savestack_ix;
452	c->savestack_max = PL_savestack_max;
453	c->retstack = PL_retstack;
454	c->retstack_ix = PL_retstack_ix;
455	c->retstack_max = PL_retstack_max;
456	c->curcop = PL_curcop;
457	c->top_env = PL_top_env;
458	}	408	}
459		409
460	/*	410	/*
461	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
463	* on the assumption that coroutines do not usually need	413	* on the (sometimes correct) assumption that coroutines do
464	* a lot of stackspace.	414	* not usually need a lot of stackspace.
465	*/	415	*/
466	STATIC void	416	static void
467	coro_init_stacks (pTHX)	417	coro_init_stacks ()
468	{	418	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
470	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		423
474	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		427
478	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
479	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	431	PL_tmps_max = 128;
482		432
483	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
484	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
486		436
		437	#ifdef SET_MARK_OFFSET
487	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
		439	#endif
488		440
489	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
490	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
491	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
492		444
493	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
494	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
495	PL_savestack_max = 96;	447	PL_savestack_max = 64;
496		448
		449	#if !PERL_VERSION_ATLEAST (5,9,0)
497	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
498	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	452	PL_retstack_max = 16;
		453	#endif
500	}	454	}
501		455
502	/*	456	/*
503	* destroy the stacks, the callchain etc...	457	* destroy the stacks, the callchain etc...
504	* still there is a memleak of 128 bytes...
505	*/	458	*/
506	STATIC void	459	static void
507	destroy_stacks(pTHX)	460	coro_destroy_stacks ()
508	{	461	{
		462	if (!IN_DESTRUCT)
		463	{
509	/* is this ugly, I ask? */	464	/* is this ugly, I ask? */
510	while (PL_scopestack_ix)	465	LEAVE_SCOPE (0);
511	LEAVE;
512		466
513	/* sure it is, but more important: is it correct?? :/ */	467	/* sure it is, but more important: is it correct?? :/ */
514	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
515	FREETMPS;	468	FREETMPS;
		469
		470	/POPSTACK_TO (PL_mainstack);//D//use/
		471	}
516		472
517	while (PL_curstackinfo->si_next)	473	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	474	PL_curstackinfo = PL_curstackinfo->si_next;
519		475
520	while (PL_curstackinfo)	476	while (PL_curstackinfo)
521	{	477	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	478	PERL_SI *p = PL_curstackinfo->si_prev;
523		479
524	{	480	{ /D//remove/
525	dSP;	481	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	482	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */	483	PUTBACK; /* possibly superfluous */
528	}	484	}
529		485
530	dounwind(-1);	486	if (!IN_DESTRUCT)
531		487	{
		488	dounwind (-1);/D//remove/
532	SvREFCNT_dec(PL_curstackinfo->si_stack);	489	SvREFCNT_dec (PL_curstackinfo->si_stack);
		490	}
		491
533	Safefree(PL_curstackinfo->si_cxstack);	492	Safefree (PL_curstackinfo->si_cxstack);
534	Safefree(PL_curstackinfo);	493	Safefree (PL_curstackinfo);
535	PL_curstackinfo = p;	494	PL_curstackinfo = p;
536	}	495	}
537		496
538	Safefree(PL_tmps_stack);	497	Safefree (PL_tmps_stack);
539	Safefree(PL_markstack);	498	Safefree (PL_markstack);
540	Safefree(PL_scopestack);	499	Safefree (PL_scopestack);
541	Safefree(PL_savestack);	500	Safefree (PL_savestack);
		501	#if !PERL_VERSION_ATLEAST (5,9,0)
542	Safefree(PL_retstack);	502	Safefree (PL_retstack);
543	}
544
545	static void
546	allocate_stack (Coro__State ctx, int alloc)
547	{
548	coro_stack *stack;
549
550	New (0, stack, 1, coro_stack);
551
552	stack->refcnt = 1;
553	stack->usecnt = 1;
554	stack->gencnt = ctx->gencnt = 0;
555	if (alloc)
556	{
557	#ifdef HAVE_MMAP
558	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
559	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);
560	if (stack->sptr == (void *)-1)
561	#endif	503	#endif
562	{
563	/FIXME//D//* reasonable stack size! */
564	stack->ssize = -4096 * sizeof (long);
565	New (0, stack->sptr, 4096, long);
566	}
567	}
568	else
569	stack->sptr = 0;
570
571	ctx->stack = stack;
572	}	504	}
573		505
574	static void	506	static void
575	deallocate_stack (Coro__State ctx)	507	setup_coro (struct coro *coro)
576	{
577	coro_stack *stack = ctx->stack;
578
579	ctx->stack = 0;
580
581	if (stack)
582	{
583	if (!--stack->refcnt)
584	{
585	#ifdef HAVE_MMAP
586	if (stack->ssize > 0 && stack->sptr)
587	munmap (stack->sptr, stack->ssize);
588	else
589	#else
590	Safefree (stack->sptr);
591	#endif
592	Safefree (stack);
593	}
594	else if (ctx->gencnt == stack->gencnt)
595	--stack->usecnt;
596	}
597	}
598
599	static void
600	setup_coro (void *arg)
601	{	508	{
602	/*	509	/*
603	* emulate part of the perl startup here.	510	* emulate part of the perl startup here.
604	*/	511	*/
		512
		513	coro_init_stacks ();
		514
		515	PL_curcop = &PL_compiling;
		516	PL_in_eval = EVAL_NULL;
		517	PL_curpm = 0;
		518	PL_localizing = 0;
		519	PL_dirty = 0;
		520	PL_restartop = 0;
		521
		522	{
		523	dSP;
		524	LOGOP myop;
		525
		526	SvREFCNT_dec (GvAV (PL_defgv));
		527	GvAV (PL_defgv) = coro->args; coro->args = 0;
		528
		529	Zero (&myop, 1, LOGOP);
		530	myop.op_next = Nullop;
		531	myop.op_flags = OPf_WANT_VOID;
		532
		533	PUSHMARK (SP);
		534	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		535	PUTBACK;
		536	PL_op = (OP *)&myop;
		537	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		538	SPAGAIN;
		539	}
		540
		541	ENTER; /* necessary e.g. for dounwind */
		542	}
		543
		544	static void
		545	free_coro_mortal ()
		546	{
		547	if (coro_mortal)
		548	{
		549	SvREFCNT_dec (coro_mortal);
		550	coro_mortal = 0;
		551	}
		552	}
		553
		554	/* inject a fake call to Coro::State::_cctx_init into the execution */
		555	static void NOINLINE
		556	prepare_cctx (coro_cctx *cctx)
		557	{
605	dSP;	558	dSP;
606	Coro__State ctx = (Coro__State)arg;	559	LOGOP myop;
607	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
608		560
609	coro_init_stacks (aTHX);	561	Zero (&myop, 1, LOGOP);
610	/PL_curcop = 0;/	562	myop.op_next = PL_op;
611	/PL_in_eval = PL_in_eval;/ /* inherit */	563	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
612	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args;
614		564
		565	PUSHMARK (SP);
		566	EXTEND (SP, 2);
		567	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		568	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		569	PUTBACK;
		570	PL_op = (OP *)&myop;
		571	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
615	SPAGAIN;	572	SPAGAIN;
616
617	if (ctx->stack)
618	{
619	ctx->cursp = 0;
620
621	PUSHMARK(SP);
622	PUTBACK;
623	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
624
625	if (SvTRUE (ERRSV))
626	croak (NULL);
627	else
628	croak ("FATAL: CCTXT coroutine returned!");
629	}
630	else
631	{
632	UNOP myop;
633
634	PL_op = (OP *)&myop;
635
636	Zero(&myop, 1, UNOP);
637	myop.op_next = Nullop;
638	myop.op_flags = OPf_WANT_VOID;
639
640	PUSHMARK(SP);
641	XPUSHs (sub_init);
642	/*
643	* the next line is slightly wrong, as PL_op->op_next
644	* is actually being executed so we skip the first op.
645	* that doesn't matter, though, since it is only
646	* pp_nextstate and we never return...
647	* ah yes, and I don't care anyways ;)
648	*/
649	PUTBACK;
650	PL_op = pp_entersub();
651	SPAGAIN;
652
653	ENTER; /* necessary e.g. for dounwind */
654	}
655	}	573	}
656		574
657	static void	575	static void
658	continue_coro (void *arg)	576	coro_run (void *arg)
659	{	577	{
		578	/* coro_run is the alternative tail of transfer(), so unlock here. */
		579	UNLOCK;
		580
660	/*	581	/*
661	* this is a _very_ stripped down perl interpreter ;)	582	* this is a _very_ stripped down perl interpreter ;)
662	*/	583	*/
663	Coro__State ctx = (Coro__State)arg;	584	PL_top_env = &PL_start_env;
664		585
665	/FIXME//* must set up top_env here */	586	/* inject call to cctx_init */
666	ctx->cursp = 0;	587	prepare_cctx ((coro_cctx *)arg);
667	PL_op = PL_op->op_next;
668	CALLRUNOPS(aTHX);
669		588
		589	/* somebody will hit me for both perl_run and PL_restartop */
		590	PL_restartop = PL_op;
		591	perl_run (PL_curinterp);
		592
		593	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
670	abort ();	594	abort ();
671	}	595	}
672		596
673	STATIC void	597	static coro_cctx *
		598	cctx_new ()
		599	{
		600	coro_cctx *cctx;
		601
		602	++cctx_count;
		603
		604	Newz (0, cctx, 1, coro_cctx);
		605
		606	#if HAVE_MMAP
		607
		608	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		609	/* mmap supposedly does allocate-on-write for us */
		610	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		611
		612	if (cctx->sptr == (void *)-1)
		613	{
		614	perror ("FATAL: unable to mmap stack for coroutine");
		615	_exit (EXIT_FAILURE);
		616	}
		617
		618	# if STACKGUARD
		619	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		620	# endif
		621
		622	#else
		623
		624	cctx->ssize = STACKSIZE * (long)sizeof (long);
		625	New (0, cctx->sptr, STACKSIZE, long);
		626
		627	if (!cctx->sptr)
		628	{
		629	perror ("FATAL: unable to malloc stack for coroutine");
		630	_exit (EXIT_FAILURE);
		631	}
		632
		633	#endif
		634
		635	#if USE_VALGRIND
		636	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		637	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		638	cctx->ssize + (char *)cctx->sptr
		639	);
		640	#endif
		641
		642	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		643
		644	return cctx;
		645	}
		646
		647	static void
		648	cctx_destroy (coro_cctx *cctx)
		649	{
		650	if (!cctx)
		651	return;
		652
		653	--cctx_count;
		654
		655	#if USE_VALGRIND
		656	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		657	#endif
		658
		659	#if HAVE_MMAP
		660	munmap (cctx->sptr, cctx->ssize);
		661	#else
		662	Safefree (cctx->sptr);
		663	#endif
		664
		665	Safefree (cctx);
		666	}
		667
		668	static coro_cctx *
		669	cctx_get ()
		670	{
		671	coro_cctx *cctx;
		672
		673	if (cctx_first)
		674	{
		675	cctx = cctx_first;
		676	cctx_first = cctx->next;
		677	--cctx_idle;
		678	}
		679	else
		680	{
		681	cctx = cctx_new ();
		682	PL_op = PL_op->op_next;
		683	}
		684
		685	return cctx;
		686	}
		687
		688	static void
		689	cctx_put (coro_cctx *cctx)
		690	{
		691	/* free another cctx if overlimit */
		692	if (cctx_idle >= MAX_IDLE_CCTX)
		693	{
		694	coro_cctx *first = cctx_first;
		695	cctx_first = first->next;
		696	--cctx_idle;
		697
		698	assert (!first->inuse);
		699	cctx_destroy (first);
		700	}
		701
		702	++cctx_idle;
		703	cctx->next = cctx_first;
		704	cctx_first = cctx;
		705	}
		706
		707	/* never call directly, always through the coro_state_transfer global variable */
		708	static void NOINLINE
674	transfer(pTHX_ struct coro prev, struct coro next, int flags)	709	transfer (struct coro prev, struct coro next)
675	{	710	{
676	dSP;
677	dSTACKLEVEL;	711	dSTACKLEVEL;
678		712
		713	/* sometimes transfer is only called to set idle_sp */
		714	if (!next)
		715	{
		716	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		717	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		718	}
679	if (prev != next)	719	else if (prev != next)
680	{	720	{
681	if (next->mainstack)	721	coro_cctx *prev__cctx;
		722
		723	if (prev->flags & CF_NEW)
682	{	724	{
683	SAVE (prev, flags);	725	/* create a new empty context */
684	LOAD (next);	726	Newz (0, prev->cctx, 1, coro_cctx);
685		727	prev->cctx->inuse = 1;
686	/* mark this state as in-use */	728	prev->flags &= ~CF_NEW;
687	next->mainstack = 0;	729	prev->flags \|= CF_RUNNING;
688	next->tmps_ix = -2;
689
690	/* stacklevel changed? if yes, grab the stack for us! */
691	if (flags & TRANSFER_SAVE_CCTXT)
692	{
693	if (!prev->stack)
694	allocate_stack (prev, 0);
695	else if (prev->cursp != stacklevel
696	&& prev->stack->usecnt > 1)
697	{
698	prev->gencnt = ++prev->stack->gencnt;
699	prev->stack->usecnt = 1;
700	}
701
702	/* has our stack been invalidated? */
703	if (next->stack && next->stack->gencnt != next->gencnt)
704	{
705	deallocate_stack (next);
706	allocate_stack (next, 1);
707	coro_create (&(next->stack->cctx),
708	continue_coro, (void *)next,
709	next->stack->sptr, labs (next->stack->ssize));
710	}
711
712	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
713	}
714
715	}	730	}
716	else if (next->tmps_ix == -2)	731
717	croak ("tried to transfer to running coroutine");	732	/TODO: must not croak here /
		733	if (!prev->flags & CF_RUNNING)
		734	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		735
		736	if (next->flags & CF_RUNNING)
		737	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		738
		739	prev->flags &= ~CF_RUNNING;
		740	next->flags \|= CF_RUNNING;
		741
		742	LOCK;
		743
		744	if (next->flags & CF_NEW)
		745	{
		746	/* need to start coroutine */
		747	next->flags &= ~CF_NEW;
		748	/* first get rid of the old state */
		749	save_perl (prev);
		750	/* setup coroutine call */
		751	setup_coro (next);
		752	/* need a new stack */
		753	assert (!next->cctx);
		754	}
718	else	755	else
719	{	756	{
720	SAVE (prev, -1); /* first get rid of the old state */	757	/* coroutine already started */
721		758	save_perl (prev);
722	if (flags & TRANSFER_SAVE_CCTXT)	759	load_perl (next);
723	{
724	if (!prev->stack)
725	allocate_stack (prev, 0);
726
727	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
728	{
729	setup_coro (next);
730
731	prev->stack->refcnt++;
732	prev->stack->usecnt++;
733	next->stack = prev->stack;
734	next->gencnt = prev->gencnt;
735	}
736	else
737	{
738	allocate_stack (next, 1);
739	coro_create (&(next->stack->cctx),
740	setup_coro, (void *)next,
741	next->stack->sptr, labs (next->stack->ssize));
742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
743	}
744	}
745	else
746	setup_coro (next);
747	}	760	}
		761
		762	prev__cctx = prev->cctx;
		763
		764	/* possibly "free" the cctx */
		765	if (prev__cctx->idle_sp == STACKLEVEL)
		766	{
		767	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		768	assert (PL_top_env == prev__cctx->top_env);
		769
		770	prev->cctx = 0;
		771
		772	cctx_put (prev__cctx);
		773	prev__cctx->inuse = 0;
		774	}
		775
		776	if (!next->cctx)
		777	{
		778	next->cctx = cctx_get ();
		779	assert (!next->cctx->inuse);
		780	next->cctx->inuse = 1;
		781	}
		782
		783	if (prev__cctx != next->cctx)
		784	{
		785	prev__cctx->top_env = PL_top_env;
		786	PL_top_env = next->cctx->top_env;
		787	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		788	}
		789
		790	free_coro_mortal ();
		791
		792	UNLOCK;
748	}	793	}
749
750	next->cursp = stacklevel;
751	}	794	}
		795
		796	struct transfer_args
		797	{
		798	struct coro prev, next;
		799	};
		800
		801	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
		802
		803	static void
		804	coro_state_destroy (struct coro *coro)
		805	{
		806	if (coro->refcnt--)
		807	return;
		808
		809	if (coro->mainstack && coro->mainstack != main_mainstack)
		810	{
		811	struct coro temp;
		812	Zero (&temp, 1, struct coro);
		813	temp.save = CORO_SAVE_ALL;
		814
		815	if (coro->flags & CF_RUNNING)
		816	croak ("FATAL: tried to destroy currently running coroutine");
		817
		818	save_perl (&temp);
		819	load_perl (coro);
		820
		821	coro_destroy_stacks ();
		822
		823	load_perl (&temp); /* this will get rid of defsv etc.. */
		824
		825	coro->mainstack = 0;
		826	}
		827
		828	cctx_destroy (coro->cctx);
		829	SvREFCNT_dec (coro->args);
		830	Safefree (coro);
		831	}
		832
		833	static int
		834	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		835	{
		836	struct coro coro = (struct coro )mg->mg_ptr;
		837	mg->mg_ptr = 0;
		838
		839	coro_state_destroy (coro);
		840
		841	return 0;
		842	}
		843
		844	static int
		845	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		846	{
		847	struct coro coro = (struct coro )mg->mg_ptr;
		848
		849	++coro->refcnt;
		850
		851	return 0;
		852	}
		853
		854	static MGVTBL coro_state_vtbl = {
		855	0, 0, 0, 0,
		856	coro_state_clear,
		857	0,
		858	#ifdef MGf_DUP
		859	coro_state_dup,
		860	#else
		861	# define MGf_DUP 0
		862	#endif
		863	};
752		864
753	static struct coro *	865	static struct coro *
754	sv_to_coro (SV arg, const char funcname, const char *varname)	866	SvSTATE (SV *coro)
755	{	867	{
756	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)	868	HV *stash;
		869	MAGIC *mg;
		870
		871	if (SvROK (coro))
		872	coro = SvRV (coro);
		873
		874	stash = SvSTASH (coro);
		875	if (stash != coro_stash && stash != coro_state_stash)
757	{	876	{
758	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	877	/* very slow, but rare, check */
759		878	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
760	if (!he)	879	croak ("Coro::State object required");
761	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
762
763	arg = HeVAL(he);
764	}	880	}
765		881
766	/* must also be changed inside Coro::Cont::yield */	882	mg = SvMAGIC (coro);
767	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	883	assert (mg->mg_type == PERL_MAGIC_ext);
768	return (struct coro ) SvIV((SV)SvRV(arg));	884	return (struct coro *)mg->mg_ptr;
769	else	885	}
770	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	886
		887	static void
		888	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		889	{
		890	ta->prev = SvSTATE (prev_sv);
		891	ta->next = SvSTATE (next_sv);
		892	}
		893
		894	static void
		895	api_transfer (SV prev_sv, SV next_sv)
		896	{
		897	struct transfer_args ta;
		898
		899	prepare_transfer (&ta, prev_sv, next_sv);
		900	TRANSFER (ta);
		901	}
		902
		903	static int
		904	api_save (SV *coro_sv, int new_save)
		905	{
		906	struct coro *coro = SvSTATE (coro_sv);
		907	int old_save = coro->save;
		908
		909	if (new_save >= 0)
		910	coro->save = new_save;
		911
		912	return old_save;
771	}	913	}
772		914
773	/ Coro ******************************************************************/	915	/ Coro ******************************************************************/
774		916
775	#define PRIO_MAX 3	917	#define PRIO_MAX 3
…		…
778	#define PRIO_LOW -1	920	#define PRIO_LOW -1
779	#define PRIO_IDLE -3	921	#define PRIO_IDLE -3
780	#define PRIO_MIN -4	922	#define PRIO_MIN -4
781		923
782	/* for Coro.pm */	924	/* for Coro.pm */
783	static GV coro_current, coro_idle;	925	static SV *coro_current;
784	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	926	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		927	static int coro_nready;
785		928
786	static void	929	static void
787	coro_enq (SV *sv)	930	coro_enq (SV *coro_sv)
788	{	931	{
789	if (SvROK (sv))	932	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
790	{	933	coro_nready++;
791	SV *hv = SvRV (sv);
792	if (SvTYPE (hv) == SVt_PVHV)
793	{
794	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);
795	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
796
797	prio = prio > PRIO_MAX ? PRIO_MAX
798	: prio < PRIO_MIN ? PRIO_MIN
799	: prio;
800
801	av_push (coro_ready [prio - PRIO_MIN], sv);
802
803	return;
804	}
805	}
806
807	croak ("Coro::ready tried to enqueue something that is not a coroutine");
808	}	934	}
809		935
810	static SV *	936	static SV *
811	coro_deq (int min_prio)	937	coro_deq (int min_prio)
812	{	938	{
…		…
815	min_prio -= PRIO_MIN;	941	min_prio -= PRIO_MIN;
816	if (min_prio < 0)	942	if (min_prio < 0)
817	min_prio = 0;	943	min_prio = 0;
818		944
819	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	945	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
820	if (av_len (coro_ready[prio]) >= 0)	946	if (AvFILLp (coro_ready [prio]) >= 0)
		947	{
		948	coro_nready--;
821	return av_shift (coro_ready[prio]);	949	return av_shift (coro_ready [prio]);
		950	}
822		951
823	return 0;	952	return 0;
824	}	953	}
825		954
		955	static int
		956	api_ready (SV *coro_sv)
		957	{
		958	struct coro *coro;
		959
		960	if (SvROK (coro_sv))
		961	coro_sv = SvRV (coro_sv);
		962
		963	coro = SvSTATE (coro_sv);
		964
		965	if (coro->flags & CF_READY)
		966	return 0;
		967
		968	#if 0 /* this is actually harmless */
		969	if (coro->flags & CF_RUNNING)
		970	croak ("Coro::ready called on currently running coroutine");
		971	#endif
		972
		973	coro->flags \|= CF_READY;
		974
		975	LOCK;
		976	coro_enq (SvREFCNT_inc (coro_sv));
		977	UNLOCK;
		978
		979	return 1;
		980	}
		981
		982	static int
		983	api_is_ready (SV *coro_sv)
		984	{
		985	return !!SvSTATE (coro_sv)->flags & CF_READY;
		986	}
		987
		988	static void
		989	prepare_schedule (struct transfer_args *ta)
		990	{
		991	SV prev, next;
		992
		993	for (;;)
		994	{
		995	LOCK;
		996	next = coro_deq (PRIO_MIN);
		997	UNLOCK;
		998
		999	if (next)
		1000	break;
		1001
		1002	{
		1003	dSP;
		1004
		1005	ENTER;
		1006	SAVETMPS;
		1007
		1008	PUSHMARK (SP);
		1009	PUTBACK;
		1010	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1011
		1012	FREETMPS;
		1013	LEAVE;
		1014	}
		1015	}
		1016
		1017	prev = SvRV (coro_current);
		1018	SvRV_set (coro_current, next);
		1019
		1020	/* free this only after the transfer */
		1021	LOCK;
		1022	free_coro_mortal ();
		1023	UNLOCK;
		1024	coro_mortal = prev;
		1025
		1026	assert (!SvROK(prev));//D
		1027	assert (!SvROK(next));//D
		1028
		1029	ta->prev = SvSTATE (prev);
		1030	ta->next = SvSTATE (next);
		1031
		1032	assert (ta->next->flags & CF_READY);
		1033	ta->next->flags &= ~CF_READY;
		1034	}
		1035
		1036	static void
		1037	prepare_cede (struct transfer_args *ta)
		1038	{
		1039	api_ready (coro_current);
		1040
		1041	prepare_schedule (ta);
		1042	}
		1043
		1044	static void
		1045	api_schedule (void)
		1046	{
		1047	struct transfer_args ta;
		1048
		1049	prepare_schedule (&ta);
		1050	TRANSFER (ta);
		1051	}
		1052
		1053	static void
		1054	api_cede (void)
		1055	{
		1056	struct transfer_args ta;
		1057
		1058	prepare_cede (&ta);
		1059	TRANSFER (ta);
		1060	}
		1061
826	MODULE = Coro::State PACKAGE = Coro::State	1062	MODULE = Coro::State PACKAGE = Coro::State
827		1063
828	PROTOTYPES: ENABLE	1064	PROTOTYPES: DISABLE
829		1065
830	BOOT:	1066	BOOT:
831	{ /* {} necessary for stoopid perl-5.6.x */	1067	{
832	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1068	#ifdef USE_ITHREADS
833	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1069	MUTEX_INIT (&coro_mutex);
		1070	#endif
		1071	BOOT_PAGESIZE;
		1072
834	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1073	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
835		1074
836	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1075	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
837	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1076	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
838	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1077	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1078	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
839	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1079	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
840
841	if (!padlist_cache)
842	padlist_cache = newHV ();
843		1080
844	main_mainstack = PL_mainstack;	1081	main_mainstack = PL_mainstack;
845	}
846		1082
847	Coro::State	1083	coroapi.ver = CORO_API_VERSION;
848	_newprocess(args)	1084	coroapi.transfer = api_transfer;
849	SV * args	1085
850	PROTOTYPE: $	1086	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		1087	}
		1088
		1089	SV *
		1090	new (char *klass, ...)
851	CODE:	1091	CODE:
852	Coro__State coro;	1092	{
		1093	struct coro *coro;
		1094	HV *hv;
		1095	int i;
853		1096
854	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
855	croak ("Coro::State::_newprocess expects an arrayref");
856
857	New (0, coro, 1, struct coro);	1097	Newz (0, coro, 1, struct coro);
		1098	coro->args = newAV ();
		1099	coro->save = CORO_SAVE_ALL;
		1100	coro->flags = CF_NEW;
858		1101
859	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1102	hv = newHV ();
860	coro->mainstack = 0; /* actual work is done inside transfer */	1103	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
861	coro->stack = 0;	1104	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
862		1105
863	RETVAL = coro;	1106	for (i = 1; i < items; i++)
		1107	av_push (coro->args, newSVsv (ST (i)));
		1108	}
864	OUTPUT:	1109	OUTPUT:
865	RETVAL	1110	RETVAL
866		1111
		1112	int
		1113	save (SV *coro, int new_save = -1)
		1114	CODE:
		1115	RETVAL = api_save (coro, new_save);
		1116	OUTPUT:
		1117	RETVAL
		1118
867	void	1119	void
868	transfer(prev, next, flags)	1120	_set_stacklevel (...)
869	Coro::State_or_hashref prev	1121	ALIAS:
870	Coro::State_or_hashref next	1122	Coro::State::transfer = 1
871	int flags	1123	Coro::schedule = 2
872	PROTOTYPE: @	1124	Coro::cede = 3
873	CODE:	1125	CODE:
874	PUTBACK;	1126	{
875	transfer (aTHX_ prev, next, flags);	1127	struct transfer_args ta;
876	SPAGAIN;	1128
		1129	switch (ix)
		1130	{
		1131	case 0:
		1132	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1133	ta.next = 0;
		1134	break;
		1135
		1136	case 1:
		1137	if (items != 2)
		1138	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1139
		1140	prepare_transfer (&ta, ST (0), ST (1));
		1141	break;
		1142
		1143	case 2:
		1144	prepare_schedule (&ta);
		1145	break;
		1146
		1147	case 3:
		1148	prepare_cede (&ta);
		1149	break;
		1150	}
		1151
		1152	TRANSFER (ta);
		1153	}
877		1154
878	void	1155	void
879	DESTROY(coro)	1156	_clone_state_from (SV dst, SV src)
880	Coro::State coro	1157	CODE:
881	CODE:	1158	{
		1159	struct coro *coro_src = SvSTATE (src);
882		1160
883	if (coro->mainstack && coro->mainstack != main_mainstack)	1161	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
884	{
885	struct coro temp;
886		1162
887	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1163	++coro_src->refcnt;
888	LOAD(aTHX_ coro);	1164	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
889		1165	}
890	destroy_stacks (aTHX);
891
892	LOAD((&temp)); /* this will get rid of defsv etc.. */
893
894	coro->mainstack = 0;
895	}
896
897	deallocate_stack (coro);
898
899	Safefree (coro);
900		1166
901	void	1167	void
902	flush()
903	CODE:
904	#ifdef MAY_FLUSH
905	flush_padlist_cache ();
906	#endif
907
908	void
909	_exit(code)	1168	_exit (code)
910	int code	1169	int code
911	PROTOTYPE: $	1170	PROTOTYPE: $
912	CODE:	1171	CODE:
913	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
914	_exit (code);	1172	_exit (code);
915	#else
916	signal (SIGTERM, SIG_DFL);
917	raise (SIGTERM);
918	exit (code);
919	#endif
920		1173
921	MODULE = Coro::State PACKAGE = Coro::Cont	1174	int
		1175	cctx_count ()
		1176	CODE:
		1177	RETVAL = cctx_count;
		1178	OUTPUT:
		1179	RETVAL
922		1180
923	# this is slightly dirty (should expose a c-level api)	1181	int
924		1182	cctx_idle ()
925	void	1183	CODE:
926	yield(...)	1184	RETVAL = cctx_idle;
927	PROTOTYPE: @	1185	OUTPUT:
928	CODE:	1186	RETVAL
929	static SV *returnstk;
930	SV *sv;
931	AV *defav = GvAV (PL_defgv);
932	struct coro prev, next;
933
934	if (!returnstk)
935	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));
936
937	/* set up @_ -- ugly */
938	av_clear (defav);
939	av_fill (defav, items - 1);
940	while (items--)
941	av_store (defav, items, SvREFCNT_inc (ST(items)));
942
943	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
944	sv = av_pop ((AV *)SvRV (returnstk));
945	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
946	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
947	SvREFCNT_dec (sv);
948
949	transfer(aTHX_ prev, next, 0);
950		1187
951	MODULE = Coro::State PACKAGE = Coro	1188	MODULE = Coro::State PACKAGE = Coro
952		1189
953	# this is slightly dirty (should expose a c-level api)
954
955	BOOT:	1190	BOOT:
956	{	1191	{
957	int i;	1192	int i;
		1193
958	HV *stash = gv_stashpv ("Coro", TRUE);	1194	coro_stash = gv_stashpv ("Coro", TRUE);
959		1195
960	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1196	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
961	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1197	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
962	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1198	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
963	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1199	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
964	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1200	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
965	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1201	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
966		1202
967	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1203	coro_current = get_sv ("Coro::current", FALSE);
968	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1204	SvREADONLY_on (coro_current);
969		1205
970	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1206	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
971	coro_ready[i] = newAV ();	1207	coro_ready[i] = newAV ();
		1208
		1209	{
		1210	SV *sv = perl_get_sv("Coro::API", 1);
		1211
		1212	coroapi.schedule = api_schedule;
		1213	coroapi.save = api_save;
		1214	coroapi.cede = api_cede;
		1215	coroapi.ready = api_ready;
		1216	coroapi.is_ready = api_is_ready;
		1217	coroapi.nready = &coro_nready;
		1218	coroapi.current = coro_current;
		1219
		1220	GCoroAPI = &coroapi;
		1221	sv_setiv (sv, (IV)&coroapi);
		1222	SvREADONLY_on (sv);
		1223	}
972	}	1224	}
973		1225
974	void	1226	void
975	ready(self)	1227	_set_current (SV *current)
976	SV * self	1228	PROTOTYPE: $
977	CODE:	1229	CODE:
978	coro_enq (SvREFCNT_inc (self));	1230	SvREFCNT_dec (SvRV (coro_current));
		1231	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1232
		1233	int
		1234	prio (Coro::State coro, int newprio = 0)
		1235	ALIAS:
		1236	nice = 1
		1237	CODE:
		1238	{
		1239	RETVAL = coro->prio;
		1240
		1241	if (items > 1)
		1242	{
		1243	if (ix)
		1244	newprio += coro->prio;
		1245
		1246	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1247	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1248
		1249	coro->prio = newprio;
		1250	}
		1251	}
		1252
		1253	SV *
		1254	ready (SV *self)
		1255	PROTOTYPE: $
		1256	CODE:
		1257	RETVAL = boolSV (api_ready (self));
		1258	OUTPUT:
		1259	RETVAL
		1260
		1261	SV *
		1262	is_ready (SV *self)
		1263	PROTOTYPE: $
		1264	CODE:
		1265	RETVAL = boolSV (api_is_ready (self));
		1266	OUTPUT:
		1267	RETVAL
		1268
		1269	int
		1270	nready (...)
		1271	PROTOTYPE:
		1272	CODE:
		1273	RETVAL = coro_nready;
		1274	OUTPUT:
		1275	RETVAL
		1276
		1277	MODULE = Coro::State PACKAGE = Coro::AIO
		1278
		1279	SV *
		1280	_get_state ()
		1281	CODE:
		1282	{
		1283	struct io_state *data;
		1284
		1285	RETVAL = newSV (sizeof (struct io_state));
		1286	data = (struct io_state *)SvPVX (RETVAL);
		1287	SvCUR_set (RETVAL, sizeof (struct io_state));
		1288	SvPOK_only (RETVAL);
		1289
		1290	data->errorno = errno;
		1291	data->laststype = PL_laststype;
		1292	data->laststatval = PL_laststatval;
		1293	data->statcache = PL_statcache;
		1294	}
		1295	OUTPUT:
		1296	RETVAL
979		1297
980	void	1298	void
981	schedule(...)	1299	_set_state (char *data_)
982	ALIAS:	1300	PROTOTYPE: $
983	cede = 1
984	CODE:	1301	CODE:
985	SV prev, next;	1302	{
		1303	struct io_state data = (void )data_;
986		1304
987	prev = GvSV (coro_current);	1305	errno = data->errorno;
		1306	PL_laststype = data->laststype;
		1307	PL_laststatval = data->laststatval;
		1308	PL_statcache = data->statcache;
		1309	}
988		1310
989	if (ix)
990	coro_enq (SvREFCNT_inc (prev));
991
992	next = coro_deq (PRIO_MIN);
993
994	if (!next)
995	next = SvREFCNT_inc (GvSV (coro_idle));
996
997	GvSV (coro_current) = SvREFCNT_inc (next);
998	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),
999	sv_to_coro (next, "Coro::schedule", "next coroutine"),
1000	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
1001	SvREFCNT_dec (next);
1002	SvREFCNT_dec (prev);
1003

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Comparing Coro/Coro/State.xs (file contents): Revision 1.22 by root, Sat Aug 11 23:10:56 2001 UTC vs. Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.22 by root, Sat Aug 11 23:10:56 2001 UTC vs.
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC