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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.4 by root, Tue Jul 17 02:21:56 2001 UTC vs.
Revision 1.73 by root, Sat Feb 4 06:01:13 2006 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		2
		3	#include "libcoro/coro.c"
		4
1	#include "EXTERN.h"	5	#include "EXTERN.h"
2	#include "perl.h"	6	#include "perl.h"
3	#include "XSUB.h"	7	#include "XSUB.h"
4		8
5	#if 0	9	#include "patchlevel.h"
6	# define CHK(x) (void *)0	10
		11	#if PERL_VERSION < 6
		12	# ifndef PL_ppaddr
		13	# define PL_ppaddr ppaddr
		14	# endif
		15	# ifndef call_sv
		16	# define call_sv perl_call_sv
		17	# endif
		18	# ifndef get_sv
		19	# define get_sv perl_get_sv
		20	# endif
		21	# ifndef get_cv
		22	# define get_cv perl_get_cv
		23	# endif
		24	# ifndef IS_PADGV
		25	# define IS_PADGV(v) 0
		26	# endif
		27	# ifndef IS_PADCONST
		28	# define IS_PADCONST(v) 0
		29	# endif
		30	#endif
		31
		32	#include <errno.h>
		33	#include <signal.h>
		34
		35	#ifdef HAVE_MMAP
		36	# include <unistd.h>
		37	# include <sys/mman.h>
		38	# ifndef MAP_ANONYMOUS
		39	# ifdef MAP_ANON
		40	# define MAP_ANONYMOUS MAP_ANON
		41	# else
		42	# undef HAVE_MMAP
		43	# endif
		44	# endif
		45	#endif
		46
		47	#define SUB_INIT "Coro::State::initialize"
		48	#define UCORO_STATE "_coro_state"
		49
		50	/* The next macro should declare a variable stacklevel that contains and approximation
		51	* to the current C stack pointer. Its property is that it changes with each call
		52	* and should be unique. */
		53	#define dSTACKLEVEL void *stacklevel = &stacklevel
		54
		55	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		56
		57	#define labs(l) ((l) >= 0 ? (l) : -(l))
		58
		59	#include "CoroAPI.h"
		60
		61	#ifdef USE_ITHREADS
		62	static perl_mutex coro_mutex;
		63	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		64	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
7	#else	65	#else
8	# define CHK(x) if (!(x)) croak("FATAL, CHK: " #x)	66	# define LOCK (void)0
		67	# define UNLOCK (void)0
9	#endif	68	#endif
		69
		70	static struct CoroAPI coroapi;
		71	static AV main_mainstack; / used to differentiate between $main and others */
		72	static HV *coro_state_stash;
		73	static SV *ucoro_state_sv;
		74	static U32 ucoro_state_hash;
		75	static SV coro_mortal; / will be freed after next transfer */
		76
		77	/* this is actually not only the c stack but also c registers etc... */
		78	typedef struct {
		79	int refcnt; /* pointer reference counter */
		80	int usecnt; /* shared by how many coroutines */
		81	int gencnt; /* generation counter */
		82
		83	coro_context cctx;
		84
		85	void *sptr;
		86	long ssize; /* positive == mmap, otherwise malloc */
		87	} coro_stack;
10		88
11	struct coro {	89	struct coro {
		90	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		91	JMPENV start_env;
		92
		93	/* the optional C context */
		94	coro_stack *stack;
		95	void *cursp;
		96	int gencnt;
		97
		98	/* optionally saved, might be zero */
		99	AV *defav;
		100	SV *defsv;
		101	SV *errsv;
		102
		103	/* saved global state not related to stacks */
12	U8 dowarn;	104	U8 dowarn;
13	AV *defav;	105	I32 in_eval;
14		106
		107	/* the stacks and related info (callchain etc..) */
15	PERL_SI *curstackinfo;	108	PERL_SI *curstackinfo;
16	AV *curstack;	109	AV *curstack;
17	AV *mainstack;	110	AV *mainstack;
18	SV **stack_sp;	111	SV **stack_sp;
19	OP *op;	112	OP *op;
20	SV **curpad;	113	SV **curpad;
		114	AV *comppad;
		115	CV *compcv;
21	SV **stack_base;	116	SV **stack_base;
22	SV **stack_max;	117	SV **stack_max;
23	SV **tmps_stack;	118	SV **tmps_stack;
24	I32 tmps_floor;	119	I32 tmps_floor;
25	I32 tmps_ix;	120	I32 tmps_ix;
34	I32 savestack_ix;	129	I32 savestack_ix;
35	I32 savestack_max;	130	I32 savestack_max;
36	OP **retstack;	131	OP **retstack;
37	I32 retstack_ix;	132	I32 retstack_ix;
38	I32 retstack_max;	133	I32 retstack_max;
		134	PMOP *curpm;
39	COP *curcop;	135	COP *curcop;
		136	JMPENV *top_env;
40		137
		138	/* data associated with this coroutine (initial args) */
41	AV *args;	139	AV *args;
42	};	140	};
43		141
44	typedef struct coro *Coro__State;	142	typedef struct coro *Coro__State;
45	typedef struct coro *Coro__State_or_hashref;	143	typedef struct coro *Coro__State_or_hashref;
46		144
47	static HV *padlist_cache;
48
49	/* mostly copied from op.c:cv_clone2 */	145	/* mostly copied from op.c:cv_clone2 */
50	STATIC AV *	146	STATIC AV *
51	clone_padlist (AV *protopadlist)	147	clone_padlist (pTHX_ AV *protopadlist)
52	{	148	{
53	AV *av;	149	AV *av;
54	I32 ix;	150	I32 ix;
55	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	151	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
56	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	152	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
75	av_store (newpadlist, 1, (SV *) newpad);	171	av_store (newpadlist, 1, (SV *) newpad);
76		172
77	av = newAV (); /* will be @_ */	173	av = newAV (); /* will be @_ */
78	av_extend (av, 0);	174	av_extend (av, 0);
79	av_store (newpad, 0, (SV *) av);	175	av_store (newpad, 0, (SV *) av);
80	AvFLAGS (av) = AVf_REIFY;	176	AvREIFY_on (av);
81		177
82	for (ix = fpad; ix > 0; ix--)	178	for (ix = fpad; ix > 0; ix--)
83	{	179	{
84	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	180	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		181
85	if (namesv && namesv != &PL_sv_undef)	182	if (namesv && namesv != &PL_sv_undef)
86	{	183	{
87	char name = SvPVX (namesv); / XXX */	184	char name = SvPVX (namesv); / XXX */
		185
88	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	186	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
89	{ /* lexical from outside? */	187	{ /* lexical from outside? */
90	npad[ix] = SvREFCNT_inc (ppad[ix]);	188	npad[ix] = SvREFCNT_inc (ppad[ix]);
91	}	189	}
92	else	190	else
…		…
98	sv = (SV *) newAV ();	196	sv = (SV *) newAV ();
99	else if (*name == '%')	197	else if (*name == '%')
100	sv = (SV *) newHV ();	198	sv = (SV *) newHV ();
101	else	199	else
102	sv = NEWSV (0, 0);	200	sv = NEWSV (0, 0);
		201
		202	#ifdef SvPADBUSY
103	if (!SvPADBUSY (sv))	203	if (!SvPADBUSY (sv))
		204	#endif
104	SvPADMY_on (sv);	205	SvPADMY_on (sv);
		206
105	npad[ix] = sv;	207	npad[ix] = sv;
106	}	208	}
107	}	209	}
108	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	210	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
109	{	211	{
…		…
115	SvPADTMP_on (sv);	217	SvPADTMP_on (sv);
116	npad[ix] = sv;	218	npad[ix] = sv;
117	}	219	}
118	}	220	}
119		221
120	#if 0 /* NONOTUNDERSTOOD */	222	#if 0 /* return -ENOTUNDERSTOOD */
121	/* Now that vars are all in place, clone nested closures. */	223	/* Now that vars are all in place, clone nested closures. */
122		224
123	for (ix = fpad; ix > 0; ix--) {	225	for (ix = fpad; ix > 0; ix--) {
124	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	226	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
125	if (namesv	227	if (namesv
…		…
138	#endif	240	#endif
139		241
140	return newpadlist;	242	return newpadlist;
141	}	243	}
142		244
143	STATIC AV *	245	STATIC void
144	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
145	{	247	{
146	/* may be during global destruction */	248	/* may be during global destruction */
147	if (SvREFCNT(padlist))	249	if (SvREFCNT (padlist))
148	{	250	{
149	I32 i = AvFILLp(padlist);	251	I32 i = AvFILLp (padlist);
150	while (i >= 0)	252	while (i >= 0)
151	{	253	{
152	SV **svp = av_fetch(padlist, i--, FALSE);	254	SV **svp = av_fetch (padlist, i--, FALSE);
153	SV sv = svp ? svp : Nullsv;
154	if (sv)	255	if (svp)
		256	{
		257	SV *sv;
		258	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
155	SvREFCNT_dec(sv);	259	SvREFCNT_dec (sv);
		260
		261	SvREFCNT_dec (*svp);
		262	}
156	}	263	}
157		264
158	SvREFCNT_dec((SV*)padlist);	265	SvREFCNT_dec ((SV*)padlist);
		266	}
		267	}
		268
		269	STATIC int
		270	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		271	{
		272	AV *padlist;
		273	AV av = (AV )mg->mg_obj;
		274
		275	/* casting is fun. */
		276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		277	free_padlist (aTHX_ padlist);
		278
		279	SvREFCNT_dec (av);
		280	}
		281
		282	#define PERL_MAGIC_coro PERL_MAGIC_ext
		283
		284	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
		285
		286	/* the next two functions merely cache the padlists */
		287	STATIC void
		288	get_padlist (pTHX_ CV *cv)
		289	{
		290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		291
		292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
		293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
		294	else
		295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
		296	}
		297
		298	STATIC void
		299	put_padlist (pTHX_ CV *cv)
		300	{
		301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		302
		303	if (!mg)
		304	{
		305	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		306	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		307	mg->mg_virtual = &vtbl_coro;
		308	mg->mg_obj = (SV *)newAV ();
		309	}
		310
		311	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
		312	}
		313
		314	#define SB do {
		315	#define SE } while (0)
		316
		317	#define LOAD(state) load_state(aTHX_ (state));
		318	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
		319
		320	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
		321
		322	static void
		323	load_state(pTHX_ Coro__State c)
		324	{
		325	PL_dowarn = c->dowarn;
		326	PL_in_eval = c->in_eval;
		327
		328	PL_curstackinfo = c->curstackinfo;
		329	PL_curstack = c->curstack;
		330	PL_mainstack = c->mainstack;
		331	PL_stack_sp = c->stack_sp;
		332	PL_op = c->op;
		333	PL_curpad = c->curpad;
		334	PL_comppad = c->comppad;
		335	PL_compcv = c->compcv;
		336	PL_stack_base = c->stack_base;
		337	PL_stack_max = c->stack_max;
		338	PL_tmps_stack = c->tmps_stack;
		339	PL_tmps_floor = c->tmps_floor;
		340	PL_tmps_ix = c->tmps_ix;
		341	PL_tmps_max = c->tmps_max;
		342	PL_markstack = c->markstack;
		343	PL_markstack_ptr = c->markstack_ptr;
		344	PL_markstack_max = c->markstack_max;
		345	PL_scopestack = c->scopestack;
		346	PL_scopestack_ix = c->scopestack_ix;
		347	PL_scopestack_max = c->scopestack_max;
		348	PL_savestack = c->savestack;
		349	PL_savestack_ix = c->savestack_ix;
		350	PL_savestack_max = c->savestack_max;
		351	#if PERL_VERSION < 9
		352	PL_retstack = c->retstack;
		353	PL_retstack_ix = c->retstack_ix;
		354	PL_retstack_max = c->retstack_max;
		355	#endif
		356	PL_curpm = c->curpm;
		357	PL_curcop = c->curcop;
		358	PL_top_env = c->top_env;
		359
		360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
		361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
		362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		363
		364	{
		365	dSP;
		366	CV *cv;
		367
		368	/* now do the ugly restore mess */
		369	while ((cv = (CV *)POPs))
		370	{
		371	AV padlist = (AV )POPs;
		372
		373	if (padlist)
		374	{
		375	put_padlist (aTHX_ cv); /* mark this padlist as available */
		376	CvPADLIST(cv) = padlist;
		377	}
		378
		379	++CvDEPTH(cv);
		380	}
		381
		382	PUTBACK;
159	}	383	}
160	}	384	}
161		385
162	/* the next tow functions merely cache the padlists */
163	STATIC void
164	get_padlist (CV *cv)
165	{
166	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
167
168	if (he && AvFILLp ((AV )he) >= 0)
169	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
170	else
171	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
172	}
173
174	STATIC void
175	put_padlist (CV *cv)
176	{
177	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
178
179	if (SvTYPE (*he) != SVt_PVAV)
180	{
181	SvREFCNT_dec (*he);
182	he = (SV )newAV ();
183	}
184
185	av_push ((AV )he, (SV *)CvPADLIST (cv));
186	}
187
188	static void	386	static void
189	SAVE(pTHX_ Coro__State c)	387	save_state(pTHX_ Coro__State c, int flags)
190	{	388	{
191	{	389	{
192	dSP;	390	dSP;
193	I32 cxix = cxstack_ix;	391	I32 cxix = cxstack_ix;
		392	PERL_CONTEXT *ccstk = cxstack;
194	PERL_SI *top_si = PL_curstackinfo;	393	PERL_SI *top_si = PL_curstackinfo;
195	PERL_CONTEXT *ccstk = cxstack;
196		394
197	/*	395	/*
198	* the worst thing you can imagine happens first - we have to save	396	* the worst thing you can imagine happens first - we have to save
199	* (and reinitialize) all cv's in the whole callchain :(	397	* (and reinitialize) all cv's in the whole callchain :(
200	*/	398	*/
…		…
210	if (CxTYPE(cx) == CXt_SUB)	408	if (CxTYPE(cx) == CXt_SUB)
211	{	409	{
212	CV *cv = cx->blk_sub.cv;	410	CV *cv = cx->blk_sub.cv;
213	if (CvDEPTH(cv))	411	if (CvDEPTH(cv))
214	{	412	{
215	#ifdef USE_THREADS
216	XPUSHs ((SV *)CvOWNER(cv));
217	#endif
218	EXTEND (SP, 3);	413	EXTEND (SP, CvDEPTH(cv)*2);
		414
		415	while (--CvDEPTH(cv))
		416	{
		417	/* this tells the restore code to increment CvDEPTH */
		418	PUSHs (Nullsv);
219	PUSHs ((SV *)CvDEPTH(cv));	419	PUSHs ((SV *)cv);
		420	}
		421
220	PUSHs ((SV *)CvPADLIST(cv));	422	PUSHs ((SV *)CvPADLIST(cv));
221	PUSHs ((SV *)cv);	423	PUSHs ((SV *)cv);
222		424
223	get_padlist (cv);	425	get_padlist (aTHX_ cv); /* this is a monster */
224
225	CvDEPTH(cv) = 0;
226	#ifdef USE_THREADS
227	CvOWNER(cv) = 0;
228	error must unlock this cv etc.. etc...
229	if you are here wondering about this error message then
230	the reason is that it will not work as advertised yet
231	#endif
232	}	426	}
233	}	427	}
		428	#ifdef CXt_FORMAT
234	else if (CxTYPE(cx) == CXt_FORMAT)	429	else if (CxTYPE(cx) == CXt_FORMAT)
235	{	430	{
236	/* I never used formats, so how should I know how these are implemented? */	431	/* I never used formats, so how should I know how these are implemented? */
237	/* my bold guess is as a simple, plain sub... */	432	/* my bold guess is as a simple, plain sub... */
238	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	433	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
239	}	434	}
		435	#endif
240	}	436	}
241		437
242	if (top_si->si_type == PERLSI_MAIN)	438	if (top_si->si_type == PERLSI_MAIN)
243	break;	439	break;
244		440
…		…
248	}	444	}
249		445
250	PUTBACK;	446	PUTBACK;
251	}	447	}
252		448
		449	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
		450	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
		451	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		452
253	c->dowarn = PL_dowarn;	453	c->dowarn = PL_dowarn;
254	c->defav = GvAV (PL_defgv);	454	c->in_eval = PL_in_eval;
		455
255	c->curstackinfo = PL_curstackinfo;	456	c->curstackinfo = PL_curstackinfo;
256	c->curstack = PL_curstack;	457	c->curstack = PL_curstack;
257	c->mainstack = PL_mainstack;	458	c->mainstack = PL_mainstack;
258	c->stack_sp = PL_stack_sp;	459	c->stack_sp = PL_stack_sp;
259	c->op = PL_op;	460	c->op = PL_op;
260	c->curpad = PL_curpad;	461	c->curpad = PL_curpad;
		462	c->comppad = PL_comppad;
		463	c->compcv = PL_compcv;
261	c->stack_base = PL_stack_base;	464	c->stack_base = PL_stack_base;
262	c->stack_max = PL_stack_max;	465	c->stack_max = PL_stack_max;
263	c->tmps_stack = PL_tmps_stack;	466	c->tmps_stack = PL_tmps_stack;
264	c->tmps_floor = PL_tmps_floor;	467	c->tmps_floor = PL_tmps_floor;
265	c->tmps_ix = PL_tmps_ix;	468	c->tmps_ix = PL_tmps_ix;
…		…
271	c->scopestack_ix = PL_scopestack_ix;	474	c->scopestack_ix = PL_scopestack_ix;
272	c->scopestack_max = PL_scopestack_max;	475	c->scopestack_max = PL_scopestack_max;
273	c->savestack = PL_savestack;	476	c->savestack = PL_savestack;
274	c->savestack_ix = PL_savestack_ix;	477	c->savestack_ix = PL_savestack_ix;
275	c->savestack_max = PL_savestack_max;	478	c->savestack_max = PL_savestack_max;
		479	#if PERL_VERSION < 9
276	c->retstack = PL_retstack;	480	c->retstack = PL_retstack;
277	c->retstack_ix = PL_retstack_ix;	481	c->retstack_ix = PL_retstack_ix;
278	c->retstack_max = PL_retstack_max;	482	c->retstack_max = PL_retstack_max;
		483	#endif
		484	c->curpm = PL_curpm;
279	c->curcop = PL_curcop;	485	c->curcop = PL_curcop;
		486	c->top_env = PL_top_env;
280	}	487	}
281		488
282	static void	489	/*
283	LOAD(pTHX_ Coro__State c)	490	* allocate various perl stacks. This is an exact copy
		491	* of perl.c:init_stacks, except that it uses less memory
		492	* on the (sometimes correct) assumption that coroutines do
		493	* not usually need a lot of stackspace.
		494	*/
		495	STATIC void
		496	coro_init_stacks (pTHX)
284	{	497	{
285	PL_dowarn = c->dowarn;	498	LOCK;
286	GvAV (PL_defgv) = c->defav;	499
287	PL_curstackinfo = c->curstackinfo;	500	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
288	PL_curstack = c->curstack;	501	PL_curstackinfo->si_type = PERLSI_MAIN;
289	PL_mainstack = c->mainstack;	502	PL_curstack = PL_curstackinfo->si_stack;
		503	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
		504
		505	PL_stack_base = AvARRAY(PL_curstack);
290	PL_stack_sp = c->stack_sp;	506	PL_stack_sp = PL_stack_base;
291	PL_op = c->op;	507	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
292	PL_curpad = c->curpad;	508
293	PL_stack_base = c->stack_base;	509	New(50,PL_tmps_stack,96,SV*);
294	PL_stack_max = c->stack_max;	510	PL_tmps_floor = -1;
295	PL_tmps_stack = c->tmps_stack;	511	PL_tmps_ix = -1;
296	PL_tmps_floor = c->tmps_floor;	512	PL_tmps_max = 96;
297	PL_tmps_ix = c->tmps_ix;	513
298	PL_tmps_max = c->tmps_max;	514	New(54,PL_markstack,16,I32);
299	PL_markstack = c->markstack;
300	PL_markstack_ptr = c->markstack_ptr;	515	PL_markstack_ptr = PL_markstack;
301	PL_markstack_max = c->markstack_max;	516	PL_markstack_max = PL_markstack + 16;
302	PL_scopestack = c->scopestack;
303	PL_scopestack_ix = c->scopestack_ix;
304	PL_scopestack_max = c->scopestack_max;
305	PL_savestack = c->savestack;
306	PL_savestack_ix = c->savestack_ix;
307	PL_savestack_max = c->savestack_max;
308	PL_retstack = c->retstack;
309	PL_retstack_ix = c->retstack_ix;
310	PL_retstack_max = c->retstack_max;
311	PL_curcop = c->curcop;
312		517
313	{	518	#ifdef SET_MARK_OFFSET
314	dSP;	519	SET_MARK_OFFSET;
315	CV *cv;
316
317	/* now do the ugly restore mess */
318	while ((cv = (CV *)POPs))
319	{
320	AV padlist = (AV )POPs;
321
322	put_padlist (cv);
323	CvPADLIST(cv) = padlist;
324	CvDEPTH(cv) = (I32)POPs;
325
326	#ifdef USE_THREADS
327	CvOWNER(cv) = (struct perl_thread *)POPs;
328	error does not work either
329	#endif	520	#endif
330	}
331		521
332	PUTBACK;	522	New(54,PL_scopestack,16,I32);
333	}	523	PL_scopestack_ix = 0;
334	}	524	PL_scopestack_max = 16;
335		525
336	/* this is an EXACT copy of S_nuke_stacks in perl.c, which is unfortunately static */	526	New(54,PL_savestack,96,ANY);
		527	PL_savestack_ix = 0;
		528	PL_savestack_max = 96;
		529
		530	#if PERL_VERSION < 9
		531	New(54,PL_retstack,8,OP*);
		532	PL_retstack_ix = 0;
		533	PL_retstack_max = 8;
		534	#endif
		535
		536	UNLOCK;
		537	}
		538
		539	/*
		540	* destroy the stacks, the callchain etc...
		541	*/
337	STATIC void	542	STATIC void
338	destroy_stacks(pTHX)	543	destroy_stacks(pTHX)
339	{	544	{
340	dSP;	545	if (!IN_DESTRUCT)
341		546	{
342	/* die does this while calling POPSTACK, but I just don't see why. */
343	dounwind(-1);
344
345	/* is this ugly, I ask? */	547	/* is this ugly, I ask? */
346	while (PL_scopestack_ix)	548	LEAVE_SCOPE (0);
347	LEAVE;	549
		550	/* sure it is, but more important: is it correct?? :/ */
		551	FREETMPS;
		552
		553	/POPSTACK_TO (PL_mainstack);//D//use/
		554	}
348		555
349	while (PL_curstackinfo->si_next)	556	while (PL_curstackinfo->si_next)
350	PL_curstackinfo = PL_curstackinfo->si_next;	557	PL_curstackinfo = PL_curstackinfo->si_next;
351		558
352	while (PL_curstackinfo)	559	while (PL_curstackinfo)
353	{	560	{
354	PERL_SI *p = PL_curstackinfo->si_prev;	561	PERL_SI *p = PL_curstackinfo->si_prev;
355		562
		563	{ /D//remove/
		564	dSP;
		565	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
		566	PUTBACK; /* possibly superfluous */
		567	}
		568
		569	if (!IN_DESTRUCT)
		570	{
		571	dounwind (-1);/D//remove/
356	SvREFCNT_dec(PL_curstackinfo->si_stack);	572	SvREFCNT_dec (PL_curstackinfo->si_stack);
		573	}
		574
357	Safefree(PL_curstackinfo->si_cxstack);	575	Safefree (PL_curstackinfo->si_cxstack);
358	Safefree(PL_curstackinfo);	576	Safefree (PL_curstackinfo);
359	PL_curstackinfo = p;	577	PL_curstackinfo = p;
360	}	578	}
361		579
362	if (PL_scopestack_ix != 0)	580	Safefree (PL_tmps_stack);
363	Perl_warner(aTHX_ WARN_INTERNAL,	581	Safefree (PL_markstack);
364	"Unbalanced scopes: %ld more ENTERs than LEAVEs\n",	582	Safefree (PL_scopestack);
365	(long)PL_scopestack_ix);	583	Safefree (PL_savestack);
366	if (PL_savestack_ix != 0)	584	#if PERL_VERSION < 9
367	Perl_warner(aTHX_ WARN_INTERNAL,	585	Safefree (PL_retstack);
368	"Unbalanced saves: %ld more saves than restores\n",	586	#endif
369	(long)PL_savestack_ix);	587	}
370	if (PL_tmps_floor != -1)	588
371	Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",	589	static void
372	(long)PL_tmps_floor + 1);	590	allocate_stack (Coro__State ctx, int alloc)
		591	{
		592	coro_stack *stack;
		593
		594	New (0, stack, 1, coro_stack);
		595
		596	stack->refcnt = 1;
		597	stack->usecnt = 1;
		598	stack->gencnt = ctx->gencnt = 0;
		599
		600	if (alloc)
		601	{
		602	#if HAVE_MMAP
		603	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
		604	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		605	if (stack->sptr == (void *)-1)
		606	#endif
		607	{
		608	/FIXME//D//* reasonable stack size! */
		609	stack->ssize = - (STACKSIZE * sizeof (long));
		610	New (0, stack->sptr, STACKSIZE, long);
		611	}
		612	}
		613	else
		614	stack->sptr = 0;
		615
		616	ctx->stack = stack;
		617	}
		618
		619	static void
		620	deallocate_stack (Coro__State ctx)
		621	{
		622	coro_stack *stack = ctx->stack;
		623
		624	ctx->stack = 0;
		625
		626	if (stack)
		627	{
		628	if (!--stack->refcnt)
		629	{
		630	#ifdef HAVE_MMAP
		631	if (stack->ssize > 0 && stack->sptr)
		632	munmap (stack->sptr, stack->ssize);
		633	else
		634	#endif
		635	Safefree (stack->sptr);
		636
		637	Safefree (stack);
		638	}
		639	else if (ctx->gencnt == stack->gencnt)
		640	--stack->usecnt;
		641	}
		642	}
		643
		644	static void
		645	setup_coro (void *arg)
		646	{
373	/*	647	/*
		648	* emulate part of the perl startup here.
		649	*/
		650	dTHX;
		651	dSP;
		652	Coro__State ctx = (Coro__State)arg;
		653	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
		654
		655	coro_init_stacks (aTHX);
		656	/PL_curcop = 0;/
		657	/PL_in_eval = PL_in_eval;/ /* inherit */
		658	SvREFCNT_dec (GvAV (PL_defgv));
		659	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		660
		661	SPAGAIN;
		662
		663	if (ctx->stack)
		664	{
		665	ctx->cursp = 0;
		666
		667	PUSHMARK(SP);
		668	PUTBACK;
		669	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		670
		671	if (SvTRUE (ERRSV))
		672	croak (NULL);
		673	else
		674	croak ("FATAL: CCTXT coroutine returned!");
		675	}
		676	else
		677	{
		678	UNOP myop;
		679
		680	PL_op = (OP *)&myop;
		681
		682	Zero(&myop, 1, UNOP);
		683	myop.op_next = Nullop;
		684	myop.op_flags = OPf_WANT_VOID;
		685
		686	PUSHMARK(SP);
		687	XPUSHs (sub_init);
		688	/*
		689	* the next line is slightly wrong, as PL_op->op_next
		690	* is actually being executed so we skip the first op.
		691	* that doesn't matter, though, since it is only
		692	* pp_nextstate and we never return...
		693	* ah yes, and I don't care anyways ;)
		694	*/
		695	PUTBACK;
		696	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		697	SPAGAIN;
		698
		699	ENTER; /* necessary e.g. for dounwind */
		700	}
		701	}
		702
		703	static void
		704	continue_coro (void *arg)
		705	{
		706	/*
		707	* this is a _very_ stripped down perl interpreter ;)
		708	*/
		709	dTHX;
		710	Coro__State ctx = (Coro__State)arg;
		711	JMPENV coro_start_env;
		712
		713	PL_top_env = &ctx->start_env;
		714
		715	ctx->cursp = 0;
		716	PL_op = PL_op->op_next;
		717	CALLRUNOPS(aTHX);
		718
		719	abort ();
		720	}
		721
		722	STATIC void
		723	transfer (pTHX_ struct coro prev, struct coro next, int flags)
		724	{
		725	dSTACKLEVEL;
		726
		727	if (prev != next)
		728	{
		729	if (next->mainstack)
		730	{
		731	LOCK;
		732	SAVE (prev, flags);
		733	LOAD (next);
		734	UNLOCK;
		735
		736	/* mark this state as in-use */
		737	next->mainstack = 0;
		738	next->tmps_ix = -2;
		739
		740	/* stacklevel changed? if yes, grab the stack for us! */
		741	if (flags & TRANSFER_SAVE_CCTXT)
		742	{
		743	if (!prev->stack)
		744	allocate_stack (prev, 0);
		745	else if (prev->cursp != stacklevel
		746	&& prev->stack->usecnt > 1)
374	*/	747	{
375	Safefree(PL_tmps_stack);	748	prev->gencnt = ++prev->stack->gencnt;
376	Safefree(PL_markstack);	749	prev->stack->usecnt = 1;
377	Safefree(PL_scopestack);	750	}
378	Safefree(PL_savestack);
379	Safefree(PL_retstack);
380	}
381		751
382	#define SUB_INIT "Coro::State::_newcoro"	752	/* has our stack been invalidated? */
		753	if (next->stack && next->stack->gencnt != next->gencnt)
		754	{
		755	deallocate_stack (next);
		756	allocate_stack (next, 1);
		757	coro_create (&(next->stack->cctx),
		758	continue_coro, (void *)next,
		759	next->stack->sptr, labs (next->stack->ssize));
		760	}
		761
		762	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		763	prev->cursp = stacklevel;
		764	/* don't add any code here */
		765	}
		766	else
		767	next->cursp = stacklevel;
		768	}
		769	else if (next->tmps_ix == -2)
		770	croak ("tried to transfer to running coroutine");
		771	else
		772	{
		773	LOCK;
		774	SAVE (prev, -1); /* first get rid of the old state */
		775	UNLOCK;
		776
		777	if (flags & TRANSFER_SAVE_CCTXT)
		778	{
		779	if (!prev->stack)
		780	allocate_stack (prev, 0);
		781
		782	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
		783	{
		784	PL_top_env = &next->start_env;
		785
		786	setup_coro (next);
		787	next->cursp = stacklevel;
		788
		789	prev->stack->refcnt++;
		790	prev->stack->usecnt++;
		791	next->stack = prev->stack;
		792	next->gencnt = prev->gencnt;
		793	}
		794	else
		795	{
		796	assert (!next->stack);
		797	allocate_stack (next, 1);
		798	coro_create (&(next->stack->cctx),
		799	setup_coro, (void *)next,
		800	next->stack->sptr, labs (next->stack->ssize));
		801	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		802	prev->cursp = stacklevel;
		803	/* don't add any code here */
		804	}
		805	}
		806	else
		807	{
		808	setup_coro (next);
		809	next->cursp = stacklevel;
		810	}
		811	}
		812	}
		813
		814	LOCK;
		815	if (coro_mortal)
		816	{
		817	SvREFCNT_dec (coro_mortal);
		818	coro_mortal = 0;
		819	}
		820	UNLOCK;
		821	}
		822
		823	#define SV_CORO(sv,func) \
		824	do { \
		825	if (SvROK (sv)) \
		826	sv = SvRV (sv); \
		827	\
		828	if (SvTYPE (sv) == SVt_PVHV) \
		829	{ \
		830	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		831	\
		832	if (!he) \
		833	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		834	\
		835	(sv) = SvRV (HeVAL(he)); \
		836	} \
		837	\
		838	/* must also be changed inside Coro::Cont::yield */ \
		839	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		840	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		841	\
		842	} while(0)
		843
		844	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		845
		846	static void
		847	api_transfer(pTHX_ SV prev, SV next, int flags)
		848	{
		849	SV_CORO (prev, "Coro::transfer");
		850	SV_CORO (next, "Coro::transfer");
		851
		852	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		853	}
		854
		855	/ Coro ******************************************************************/
		856
		857	#define PRIO_MAX 3
		858	#define PRIO_HIGH 1
		859	#define PRIO_NORMAL 0
		860	#define PRIO_LOW -1
		861	#define PRIO_IDLE -3
		862	#define PRIO_MIN -4
		863
		864	/* for Coro.pm */
		865	static GV coro_current, coro_idle;
		866	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		867	static int coro_nready;
		868
		869	static void
		870	coro_enq (pTHX_ SV *sv)
		871	{
		872	if (SvTYPE (sv) != SVt_PVHV)
		873	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		874
		875	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		876	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		877
		878	prio = prio > PRIO_MAX ? PRIO_MAX
		879	: prio < PRIO_MIN ? PRIO_MIN
		880	: prio;
		881
		882	av_push (coro_ready [prio - PRIO_MIN], sv);
		883	coro_nready++;
		884	}
		885
		886	static SV *
		887	coro_deq (pTHX_ int min_prio)
		888	{
		889	int prio = PRIO_MAX - PRIO_MIN;
		890
		891	min_prio -= PRIO_MIN;
		892	if (min_prio < 0)
		893	min_prio = 0;
		894
		895	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		896	if (av_len (coro_ready[prio]) >= 0)
		897	{
		898	coro_nready--;
		899	return av_shift (coro_ready[prio]);
		900	}
		901
		902	return 0;
		903	}
		904
		905	static void
		906	api_ready (SV *coro)
		907	{
		908	dTHX;
		909
		910	if (SvROK (coro))
		911	coro = SvRV (coro);
		912
		913	LOCK;
		914	coro_enq (aTHX_ SvREFCNT_inc (coro));
		915	UNLOCK;
		916	}
		917
		918	static void
		919	api_schedule (void)
		920	{
		921	dTHX;
		922
		923	SV prev, next;
		924
		925	LOCK;
		926
		927	prev = SvRV (GvSV (coro_current));
		928	next = coro_deq (aTHX_ PRIO_MIN);
		929
		930	if (!next)
		931	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		932
		933	/* free this only after the transfer */
		934	coro_mortal = prev;
		935	SV_CORO (prev, "Coro::schedule");
		936
		937	SvRV (GvSV (coro_current)) = next;
		938
		939	SV_CORO (next, "Coro::schedule");
		940
		941	UNLOCK;
		942
		943	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		944	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		945	}
		946
		947	static void
		948	api_cede (void)
		949	{
		950	dTHX;
		951
		952	LOCK;
		953	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		954	UNLOCK;
		955
		956	api_schedule ();
		957	}
383		958
384	MODULE = Coro::State PACKAGE = Coro::State	959	MODULE = Coro::State PACKAGE = Coro::State
385		960
386	PROTOTYPES: ENABLE	961	PROTOTYPES: ENABLE
387		962
388	BOOT:	963	BOOT:
389	if (!padlist_cache)	964	{ /* {} necessary for stoopid perl-5.6.x */
390	padlist_cache = newHV ();	965	#ifdef USE_ITHREADS
		966	MUTEX_INIT (&coro_mutex);
		967	#endif
		968
		969	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
		970	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
		971	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		972
		973	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
		974	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
		975	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
		976	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
		977
		978	main_mainstack = PL_mainstack;
		979
		980	coroapi.ver = CORO_API_VERSION;
		981	coroapi.transfer = api_transfer;
		982	}
391		983
392	Coro::State	984	Coro::State
393	_newprocess(args)	985	_newprocess(args)
394	SV * args	986	SV * args
395	PROTOTYPE: $	987	PROTOTYPE: $
396	CODE:	988	CODE:
397	Coro__State coro;	989	Coro__State coro;
398		990
399	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	991	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
400	croak ("Coro::State::newprocess expects an arrayref");	992	croak ("Coro::State::_newprocess expects an arrayref");
401		993
402	New (0, coro, 1, struct coro);	994	Newz (0, coro, 1, struct coro);
403		995
404	coro->mainstack = 0; /* actual work is done inside transfer */
405	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	996	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
		997	/coro->mainstack = 0; //actual work is done inside transfer /
		998	/coro->stack = 0;/
		999
		1000	/* same as JMPENV_BOOTSTRAP */
		1001	/* we might be able to recycle start_env, but safe is safe */
		1002	/Zero(&coro->start_env, 1, JMPENV);/
		1003	coro->start_env.je_ret = -1;
		1004	coro->start_env.je_mustcatch = TRUE;
406		1005
407	RETVAL = coro;	1006	RETVAL = coro;
408	OUTPUT:	1007	OUTPUT:
409	RETVAL	1008	RETVAL
410		1009
411	void	1010	void
412	transfer(prev,next)	1011	transfer(prev, next, flags)
413	Coro::State_or_hashref prev	1012	SV *prev
414	Coro::State_or_hashref next	1013	SV *next
		1014	int flags
		1015	PROTOTYPE: @
415	CODE:	1016	CODE:
416
417	if (prev != next)
418	{
419	PUTBACK;	1017	PUTBACK;
420	SAVE (aTHX_ prev);	1018	SV_CORO (next, "Coro::transfer");
421		1019	SV_CORO (prev, "Coro::transfer");
422	/*	1020	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
423	* this could be done in newprocess which would lead to
424	* extremely elegant and fast (just PUTBACK/SAVE/LOAD/SPAGAIN)
425	* code here, but lazy allocation of stacks has also
426	* some virtues and the overhead of the if() is nil.
427	*/
428	if (next->mainstack)
429	{
430	LOAD (aTHX_ next);
431	next->mainstack = 0; /* unnecessary but much cleaner */
432	SPAGAIN;	1021	SPAGAIN;
433	}
434	else
435	{
436	/*
437	* emulate part of the perl startup here.
438	*/
439	UNOP myop;
440
441	init_stacks (); /* from perl.c */
442	PL_op = (OP *)&myop;
443	/PL_curcop = 0;/
444	GvAV (PL_defgv) = (SV *)SvREFCNT_inc (next->args);
445
446	SPAGAIN;
447	Zero(&myop, 1, UNOP);
448	myop.op_next = Nullop;
449	myop.op_flags = OPf_WANT_VOID;
450
451	PUSHMARK(SP);
452	XPUSHs ((SV*)get_cv(SUB_INIT, TRUE));
453	PUTBACK;
454	/*
455	* the next line is slightly wrong, as PL_op->op_next
456	* is actually being executed so we skip the first op.
457	* that doesn't matter, though, since it is only
458	* pp_nextstate and we never return...
459	*/
460	PL_op = Perl_pp_entersub(aTHX);
461	SPAGAIN;
462
463	ENTER;
464	}
465	}
466		1022
467	void	1023	void
468	DESTROY(coro)	1024	DESTROY(coro)
469	Coro::State coro	1025	Coro::State coro
470	CODE:	1026	CODE:
471		1027
472	if (coro->mainstack)	1028	if (coro->mainstack && coro->mainstack != main_mainstack)
473	{	1029	{
474	struct coro temp;	1030	struct coro temp;
475		1031
476	PUTBACK;	1032	PUTBACK;
477	SAVE(aTHX_ (&temp));	1033	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
478	LOAD(aTHX_ coro);	1034	LOAD (aTHX_ coro);
479
480	destroy_stacks ();
481	SvREFCNT_dec ((SV *)GvAV (PL_defgv));
482
483	LOAD((&temp));
484	SPAGAIN;	1035	SPAGAIN;
		1036
		1037	destroy_stacks (aTHX);
		1038
		1039	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1040	SPAGAIN;
		1041
		1042	coro->mainstack = 0;
485	}	1043	}
486		1044
		1045	deallocate_stack (coro);
487	SvREFCNT_dec (coro->args);	1046	SvREFCNT_dec (coro->args);
488	Safefree (coro);	1047	Safefree (coro);
489		1048
		1049	void
		1050	_exit(code)
		1051	int code
		1052	PROTOTYPE: $
		1053	CODE:
		1054	_exit (code);
490		1055
		1056	MODULE = Coro::State PACKAGE = Coro::Cont
		1057
		1058	# this is slightly dirty (should expose a c-level api)
		1059
		1060	void
		1061	yield(...)
		1062	PROTOTYPE: @
		1063	CODE:
		1064	SV *yieldstack;
		1065	SV *sv;
		1066	AV *defav = GvAV (PL_defgv);
		1067	struct coro prev, next;
		1068
		1069	yieldstack = *hv_fetch (
		1070	(HV *)SvRV (GvSV (coro_current)),
		1071	"yieldstack", sizeof ("yieldstack") - 1,
		1072	0
		1073	);
		1074
		1075	/* set up @_ -- ugly */
		1076	av_clear (defav);
		1077	av_fill (defav, items - 1);
		1078	while (items--)
		1079	av_store (defav, items, SvREFCNT_inc (ST(items)));
		1080
		1081	sv = av_pop ((AV *)SvRV (yieldstack));
		1082	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
		1083	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
		1084	SvREFCNT_dec (sv);
		1085
		1086	transfer (aTHX_ prev, next, 0);
		1087
		1088	MODULE = Coro::State PACKAGE = Coro
		1089
		1090	# this is slightly dirty (should expose a c-level api)
		1091
		1092	BOOT:
		1093	{
		1094	int i;
		1095	HV *stash = gv_stashpv ("Coro", TRUE);
		1096
		1097	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1098	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1099	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1100	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1101	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1102	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1103
		1104	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1105	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1106
		1107	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1108	coro_ready[i] = newAV ();
		1109
		1110	{
		1111	SV *sv = perl_get_sv("Coro::API", 1);
		1112
		1113	coroapi.schedule = api_schedule;
		1114	coroapi.cede = api_cede;
		1115	coroapi.ready = api_ready;
		1116	coroapi.nready = &coro_nready;
		1117	coroapi.current = coro_current;
		1118
		1119	GCoroAPI = &coroapi;
		1120	sv_setiv(sv, (IV)&coroapi);
		1121	SvREADONLY_on(sv);
		1122	}
		1123	}
		1124
		1125	#if !PERL_MICRO
		1126
		1127	void
		1128	ready(self)
		1129	SV * self
		1130	PROTOTYPE: $
		1131	CODE:
		1132	api_ready (self);
		1133
		1134	#endif
		1135
		1136	int
		1137	nready(...)
		1138	PROTOTYPE:
		1139	CODE:
		1140	RETVAL = coro_nready;
		1141	OUTPUT:
		1142	RETVAL
		1143
		1144	void
		1145	schedule(...)
		1146	PROTOTYPE:
		1147	CODE:
		1148	api_schedule ();
		1149
		1150	void
		1151	cede(...)
		1152	PROTOTYPE:
		1153	CODE:
		1154	api_cede ();
		1155
		1156	# and these are hacks
		1157	SV *
		1158	_aio_get_state ()
		1159	CODE:
		1160	{
		1161	struct {
		1162	int errorno;
		1163	int laststype;
		1164	int laststatval;
		1165	Stat_t statcache;
		1166	} data;
		1167
		1168	data.errorno = errno;
		1169	data.laststype = PL_laststype;
		1170	data.laststatval = PL_laststatval;
		1171	data.statcache = PL_statcache;
		1172
		1173	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1174	}
		1175	OUTPUT:
		1176	RETVAL
		1177
		1178	void
		1179	_aio_set_state (char *data_)
		1180	PROTOTYPE: $
		1181	CODE:
		1182	{
		1183	struct {
		1184	int errorno;
		1185	int laststype;
		1186	int laststatval;
		1187	Stat_t statcache;
		1188	} data = (void )data_;
		1189
		1190	errno = data->errorno;
		1191	PL_laststype = data->laststype;
		1192	PL_laststatval = data->laststatval;
		1193	PL_statcache = data->statcache;
		1194	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.4 by root, Tue Jul 17 02:21:56 2001 UTC vs. Revision 1.73 by root, Sat Feb 4 06:01:13 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.4 by root, Tue Jul 17 02:21:56 2001 UTC vs.
Revision 1.73 by root, Sat Feb 4 06:01:13 2006 UTC