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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.12 by root, Sun Jul 22 03:24:10 2001 UTC vs.
Revision 1.56 by pcg, Thu Apr 1 02:41:05 2004 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		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	#if 1	7	#include "patchlevel.h"
6	# define CHK(x) (void *)0	8
		9	#if PATCHLEVEL < 6
		10	# ifndef PL_ppaddr
		11	# define PL_ppaddr ppaddr
		12	# endif
		13	# ifndef call_sv
		14	# define call_sv perl_call_sv
		15	# endif
		16	# ifndef get_sv
		17	# define get_sv perl_get_sv
		18	# endif
		19	# ifndef get_cv
		20	# define get_cv perl_get_cv
		21	# endif
		22	# ifndef IS_PADGV
		23	# define IS_PADGV(v) 0
		24	# endif
		25	# ifndef IS_PADCONST
		26	# define IS_PADCONST(v) 0
		27	# endif
		28	#endif
		29
		30	#include "libcoro/coro.c"
		31
		32	#include <signal.h>
		33
		34	#ifdef HAVE_MMAP
		35	# include <unistd.h>
		36	# include <sys/mman.h>
		37	# ifndef MAP_ANONYMOUS
		38	# ifdef MAP_ANON
		39	# define MAP_ANONYMOUS MAP_ANON
		40	# else
		41	# undef HAVE_MMAP
		42	# endif
		43	# endif
		44	#endif
		45
		46	#define SUB_INIT "Coro::State::initialize"
		47	#define UCORO_STATE "_coro_state"
		48
		49	/* The next macro should declare a variable stacklevel that contains and approximation
		50	* to the current C stack pointer. Its property is that it changes with each call
		51	* and should be unique. */
		52	#define dSTACKLEVEL void *stacklevel = &stacklevel
		53
		54	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		55
		56	#define labs(l) ((l) >= 0 ? (l) : -(l))
		57
		58	#include "CoroAPI.h"
		59
		60	#ifdef USE_ITHREADS
		61	static perl_mutex coro_mutex;
		62	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		63	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
7	#else	64	#else
8	# define CHK(x) if (!(x)) croak("FATAL, CHK: " #x)	65	# define LOCK 0
		66	# define UNLOCK 0
9	#endif	67	#endif
10		68
11	#define MAY_FLUSH /* increases codesize */	69	static struct CoroAPI coroapi;
		70	static AV main_mainstack; / used to differentiate between $main and others */
		71	static HV *coro_state_stash;
		72	static SV *ucoro_state_sv;
		73	static U32 ucoro_state_hash;
		74	static __thread SV coro_mortal; / will be freed after next transfer */
12		75
13	#define SUB_INIT "Coro::State::initialize"	76	/* this is actually not only the c stack but also c registers etc... */
		77	typedef struct {
		78	int refcnt; /* pointer reference counter */
		79	int usecnt; /* shared by how many coroutines */
		80	int gencnt; /* generation counter */
14		81
15	#define TRANSFER_SAVE_DEFAV 0x00000001	82	coro_context cctx;
16	#define TRANSFER_SAVE_DEFSV 0x00000002
17	#define TRANSFER_SAVE_ERRSV 0x00000004
18		83
19	#define TRANSFER_SAVE_ALL -1	84	void *sptr;
		85	long ssize; /* positive == mmap, otherwise malloc */
		86	} coro_stack;
20		87
21	struct coro {	88	struct coro {
		89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		90	JMPENV start_env;
		91
		92	/* the optional C context */
		93	coro_stack *stack;
		94	void *cursp;
		95	int gencnt;
		96
22	/* optionally saved, might be zero */	97	/* optionally saved, might be zero */
23	AV *defav;	98	AV *defav;
24	SV *defsv;	99	SV *defsv;
25	SV *errsv;	100	SV *errsv;
26		101
27	/* saved global state not related to stacks */	102	/* saved global state not related to stacks */
28	U8 dowarn;	103	U8 dowarn;
		104	I32 in_eval;
29		105
30	/* the stacks and related info (callchain etc..) */	106	/* the stacks and related info (callchain etc..) */
31	PERL_SI *curstackinfo;	107	PERL_SI *curstackinfo;
32	AV *curstack;	108	AV *curstack;
33	AV *mainstack;	109	AV *mainstack;
34	SV **stack_sp;	110	SV **stack_sp;
35	OP *op;	111	OP *op;
36	SV **curpad;	112	SV **curpad;
		113	AV *comppad;
37	SV **stack_base;	114	SV **stack_base;
38	SV **stack_max;	115	SV **stack_max;
39	SV **tmps_stack;	116	SV **tmps_stack;
40	I32 tmps_floor;	117	I32 tmps_floor;
41	I32 tmps_ix;	118	I32 tmps_ix;
51	I32 savestack_max;	128	I32 savestack_max;
52	OP **retstack;	129	OP **retstack;
53	I32 retstack_ix;	130	I32 retstack_ix;
54	I32 retstack_max;	131	I32 retstack_max;
55	COP *curcop;	132	COP *curcop;
		133	JMPENV *top_env;
56		134
57	/* data associated with this coroutine (initial args) */	135	/* data associated with this coroutine (initial args) */
58	AV *args;	136	AV *args;
59	};	137	};
60		138
61	typedef struct coro *Coro__State;	139	typedef struct coro *Coro__State;
62	typedef struct coro *Coro__State_or_hashref;	140	typedef struct coro *Coro__State_or_hashref;
63		141
64	static AV main_mainstack; / used to differentiate between $main and others */
65
66	static HV *padlist_cache;
67
68	/* mostly copied from op.c:cv_clone2 */	142	/* mostly copied from op.c:cv_clone2 */
69	STATIC AV *	143	STATIC AV *
70	clone_padlist (AV *protopadlist)	144	clone_padlist (pTHX_ AV *protopadlist)
71	{	145	{
72	AV *av;	146	AV *av;
73	I32 ix;	147	I32 ix;
74	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	148	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
75	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	149	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
99	AvFLAGS (av) = AVf_REIFY;	173	AvFLAGS (av) = AVf_REIFY;
100		174
101	for (ix = fpad; ix > 0; ix--)	175	for (ix = fpad; ix > 0; ix--)
102	{	176	{
103	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	177	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		178
104	if (namesv && namesv != &PL_sv_undef)	179	if (namesv && namesv != &PL_sv_undef)
105	{	180	{
106	char name = SvPVX (namesv); / XXX */	181	char name = SvPVX (namesv); / XXX */
		182
107	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	183	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
108	{ /* lexical from outside? */	184	{ /* lexical from outside? */
109	npad[ix] = SvREFCNT_inc (ppad[ix]);	185	npad[ix] = SvREFCNT_inc (ppad[ix]);
110	}	186	}
111	else	187	else
…		…
117	sv = (SV *) newAV ();	193	sv = (SV *) newAV ();
118	else if (*name == '%')	194	else if (*name == '%')
119	sv = (SV *) newHV ();	195	sv = (SV *) newHV ();
120	else	196	else
121	sv = NEWSV (0, 0);	197	sv = NEWSV (0, 0);
		198
		199	#ifdef SvPADBUSY
122	if (!SvPADBUSY (sv))	200	if (!SvPADBUSY (sv))
		201	#endif
123	SvPADMY_on (sv);	202	SvPADMY_on (sv);
		203
124	npad[ix] = sv;	204	npad[ix] = sv;
125	}	205	}
126	}	206	}
127	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	207	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
128	{	208	{
…		…
157	#endif	237	#endif
158		238
159	return newpadlist;	239	return newpadlist;
160	}	240	}
161		241
162	#ifdef MAY_FLUSH	242	STATIC void
163	STATIC AV *
164	free_padlist (AV *padlist)	243	free_padlist (pTHX_ AV *padlist)
165	{	244	{
166	/* may be during global destruction */	245	/* may be during global destruction */
167	if (SvREFCNT(padlist))	246	if (SvREFCNT (padlist))
168	{	247	{
169	I32 i = AvFILLp(padlist);	248	I32 i = AvFILLp (padlist);
170	while (i >= 0)	249	while (i >= 0)
171	{	250	{
172	SV **svp = av_fetch(padlist, i--, FALSE);	251	SV **svp = av_fetch (padlist, i--, FALSE);
173	SV sv = svp ? svp : Nullsv;
174	if (sv)	252	if (svp)
		253	{
		254	SV *sv;
		255	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
175	SvREFCNT_dec(sv);	256	SvREFCNT_dec (sv);
		257
		258	SvREFCNT_dec (*svp);
		259	}
176	}	260	}
177		261
178	SvREFCNT_dec((SV*)padlist);	262	SvREFCNT_dec ((SV*)padlist);
179	}	263	}
180	}	264	}
181	#endif	265
		266	STATIC int
		267	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		268	{
		269	AV *padlist;
		270	AV av = (AV )mg->mg_obj;
		271
		272	/* casting is fun. */
		273	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		274	free_padlist (aTHX_ padlist);
		275	}
		276
		277	#define PERL_MAGIC_coro PERL_MAGIC_ext
		278
		279	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
182		280
183	/* the next two functions merely cache the padlists */	281	/* the next two functions merely cache the padlists */
184	STATIC void	282	STATIC void
185	get_padlist (CV *cv)	283	get_padlist (pTHX_ CV *cv)
186	{	284	{
187	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	285	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
188		286
189	if (he && AvFILLp ((AV )he) >= 0)	287	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
190	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	288	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
191	else	289	else
192	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	290	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
193	}	291	}
194		292
195	STATIC void	293	STATIC void
196	put_padlist (CV *cv)	294	put_padlist (pTHX_ CV *cv)
197	{	295	{
198	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	296	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
199		297
200	if (SvTYPE (*he) != SVt_PVAV)	298	if (!mg)
201	{	299	{
202	SvREFCNT_dec (*he);	300	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		301	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		302	mg->mg_virtual = &vtbl_coro;
203	he = (SV )newAV ();	303	mg->mg_obj = (SV *)newAV ();
204	}	304	}
205		305
206	av_push ((AV )he, (SV *)CvPADLIST (cv));	306	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
207	}	307	}
208
209	#ifdef MAY_FLUSH
210	STATIC void
211	flush_padlist_cache ()
212	{
213	HV *hv = padlist_cache;
214	padlist_cache = newHV ();
215
216	if (hv_iterinit (hv))
217	{
218	HE *he;
219	AV *padlist;
220
221	while (!!(he = hv_iternext (hv)))
222	{
223	AV av = (AV )HeVAL(he);
224
225	/* casting is fun. */
226	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
227	free_padlist (padlist);
228	}
229	}
230
231	SvREFCNT_dec (hv);
232	}
233	#endif
234		308
235	#define SB do {	309	#define SB do {
236	#define SE } while (0)	310	#define SE } while (0)
237		311
238	#define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE	312	#define LOAD(state) load_state(aTHX_ (state));
239	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE	313	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
240		314
241	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	315	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
242		316
243	static void	317	static void
244	load_state(pTHX_ Coro__State c)	318	load_state(pTHX_ Coro__State c)
245	{	319	{
246	PL_dowarn = c->dowarn;	320	PL_dowarn = c->dowarn;
		321	PL_in_eval = c->in_eval;
247		322
248	PL_curstackinfo = c->curstackinfo;	323	PL_curstackinfo = c->curstackinfo;
249	PL_curstack = c->curstack;	324	PL_curstack = c->curstack;
250	PL_mainstack = c->mainstack;	325	PL_mainstack = c->mainstack;
251	PL_stack_sp = c->stack_sp;	326	PL_stack_sp = c->stack_sp;
252	PL_op = c->op;	327	PL_op = c->op;
253	PL_curpad = c->curpad;	328	PL_curpad = c->curpad;
		329	PL_comppad = c->comppad;
254	PL_stack_base = c->stack_base;	330	PL_stack_base = c->stack_base;
255	PL_stack_max = c->stack_max;	331	PL_stack_max = c->stack_max;
256	PL_tmps_stack = c->tmps_stack;	332	PL_tmps_stack = c->tmps_stack;
257	PL_tmps_floor = c->tmps_floor;	333	PL_tmps_floor = c->tmps_floor;
258	PL_tmps_ix = c->tmps_ix;	334	PL_tmps_ix = c->tmps_ix;
…		…
268	PL_savestack_max = c->savestack_max;	344	PL_savestack_max = c->savestack_max;
269	PL_retstack = c->retstack;	345	PL_retstack = c->retstack;
270	PL_retstack_ix = c->retstack_ix;	346	PL_retstack_ix = c->retstack_ix;
271	PL_retstack_max = c->retstack_max;	347	PL_retstack_max = c->retstack_max;
272	PL_curcop = c->curcop;	348	PL_curcop = c->curcop;
		349	PL_top_env = c->top_env;
273		350
274	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	351	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
275	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	352	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
276	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	353	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
277		354
…		…
284	{	361	{
285	AV padlist = (AV )POPs;	362	AV padlist = (AV )POPs;
286		363
287	if (padlist)	364	if (padlist)
288	{	365	{
289	put_padlist (cv); /* mark this padlist as available */	366	put_padlist (aTHX_ cv); /* mark this padlist as available */
290	CvPADLIST(cv) = padlist;	367	CvPADLIST(cv) = padlist;
291	#ifdef USE_THREADS
292	/CvOWNER(cv) = (struct perl_thread )POPs;*/
293	#endif
294	}	368	}
295		369
296	++CvDEPTH(cv);	370	++CvDEPTH(cv);
297	}	371	}
298		372
…		…
316		390
317	PUSHs (Nullsv);	391	PUSHs (Nullsv);
318	/* this loop was inspired by pp_caller */	392	/* this loop was inspired by pp_caller */
319	for (;;)	393	for (;;)
320	{	394	{
321	do	395	while (cxix >= 0)
322	{	396	{
323	PERL_CONTEXT *cx = &ccstk[cxix--];	397	PERL_CONTEXT *cx = &ccstk[cxix--];
324		398
325	if (CxTYPE(cx) == CXt_SUB)	399	if (CxTYPE(cx) == CXt_SUB)
326	{	400	{
327	CV *cv = cx->blk_sub.cv;	401	CV *cv = cx->blk_sub.cv;
328	if (CvDEPTH(cv))	402	if (CvDEPTH(cv))
329	{	403	{
330	#ifdef USE_THREADS
331	/XPUSHs ((SV )CvOWNER(cv));*/
332	/CvOWNER(cv) = 0;/
333	/error must unlock this cv etc.. etc.../
334	#endif
335	EXTEND (SP, CvDEPTH(cv)*2);	404	EXTEND (SP, CvDEPTH(cv)*2);
336		405
337	while (--CvDEPTH(cv))	406	while (--CvDEPTH(cv))
338	{	407	{
339	/* this tells the restore code to increment CvDEPTH */	408	/* this tells the restore code to increment CvDEPTH */
…		…
342	}	411	}
343		412
344	PUSHs ((SV *)CvPADLIST(cv));	413	PUSHs ((SV *)CvPADLIST(cv));
345	PUSHs ((SV *)cv);	414	PUSHs ((SV *)cv);
346		415
347	get_padlist (cv); /* this is a monster */	416	get_padlist (aTHX_ cv); /* this is a monster */
348	}	417	}
349	}	418	}
		419	#ifdef CXt_FORMAT
350	else if (CxTYPE(cx) == CXt_FORMAT)	420	else if (CxTYPE(cx) == CXt_FORMAT)
351	{	421	{
352	/* I never used formats, so how should I know how these are implemented? */	422	/* I never used formats, so how should I know how these are implemented? */
353	/* my bold guess is as a simple, plain sub... */	423	/* my bold guess is as a simple, plain sub... */
354	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	424	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
355	}	425	}
		426	#endif
356	}	427	}
357	while (cxix >= 0);
358		428
359	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
360	break;	430	break;
361		431
362	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
…		…
369		439
370	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	440	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
371	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
372	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	442	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
373		443
374	/* I have not the slightest idea of why av_reify is necessary */
375	/* but if it's missing the defav contents magically get replaced sometimes */
376	if (c->defav)
377	av_reify (c->defav);
378
379	c->dowarn = PL_dowarn;	444	c->dowarn = PL_dowarn;
		445	c->in_eval = PL_in_eval;
380		446
381	c->curstackinfo = PL_curstackinfo;	447	c->curstackinfo = PL_curstackinfo;
382	c->curstack = PL_curstack;	448	c->curstack = PL_curstack;
383	c->mainstack = PL_mainstack;	449	c->mainstack = PL_mainstack;
384	c->stack_sp = PL_stack_sp;	450	c->stack_sp = PL_stack_sp;
385	c->op = PL_op;	451	c->op = PL_op;
386	c->curpad = PL_curpad;	452	c->curpad = PL_curpad;
		453	c->comppad = PL_comppad;
387	c->stack_base = PL_stack_base;	454	c->stack_base = PL_stack_base;
388	c->stack_max = PL_stack_max;	455	c->stack_max = PL_stack_max;
389	c->tmps_stack = PL_tmps_stack;	456	c->tmps_stack = PL_tmps_stack;
390	c->tmps_floor = PL_tmps_floor;	457	c->tmps_floor = PL_tmps_floor;
391	c->tmps_ix = PL_tmps_ix;	458	c->tmps_ix = PL_tmps_ix;
…		…
401	c->savestack_max = PL_savestack_max;	468	c->savestack_max = PL_savestack_max;
402	c->retstack = PL_retstack;	469	c->retstack = PL_retstack;
403	c->retstack_ix = PL_retstack_ix;	470	c->retstack_ix = PL_retstack_ix;
404	c->retstack_max = PL_retstack_max;	471	c->retstack_max = PL_retstack_max;
405	c->curcop = PL_curcop;	472	c->curcop = PL_curcop;
		473	c->top_env = PL_top_env;
		474	}
		475
		476	/*
		477	* allocate various perl stacks. This is an exact copy
		478	* of perl.c:init_stacks, except that it uses less memory
		479	* on the (sometimes correct) assumption that coroutines do
		480	* not usually need a lot of stackspace.
		481	*/
		482	STATIC void
		483	coro_init_stacks (pTHX)
		484	{
		485	LOCK;
		486
		487	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
		488	PL_curstackinfo->si_type = PERLSI_MAIN;
		489	PL_curstack = PL_curstackinfo->si_stack;
		490	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
		491
		492	PL_stack_base = AvARRAY(PL_curstack);
		493	PL_stack_sp = PL_stack_base;
		494	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
		495
		496	New(50,PL_tmps_stack,96,SV*);
		497	PL_tmps_floor = -1;
		498	PL_tmps_ix = -1;
		499	PL_tmps_max = 96;
		500
		501	New(54,PL_markstack,16,I32);
		502	PL_markstack_ptr = PL_markstack;
		503	PL_markstack_max = PL_markstack + 16;
		504
		505	#ifdef SET_MARK_OFFSET
		506	SET_MARK_OFFSET;
		507	#endif
		508
		509	New(54,PL_scopestack,16,I32);
		510	PL_scopestack_ix = 0;
		511	PL_scopestack_max = 16;
		512
		513	New(54,PL_savestack,96,ANY);
		514	PL_savestack_ix = 0;
		515	PL_savestack_max = 96;
		516
		517	New(54,PL_retstack,8,OP*);
		518	PL_retstack_ix = 0;
		519	PL_retstack_max = 8;
		520
		521	UNLOCK;
406	}	522	}
407		523
408	/*	524	/*
409	* destroy the stacks, the callchain etc...	525	* destroy the stacks, the callchain etc...
410	* still there is a memleak of 128 bytes...
411	*/	526	*/
412	STATIC void	527	STATIC void
413	destroy_stacks(pTHX)	528	destroy_stacks(pTHX)
414	{	529	{
		530	if (!IN_DESTRUCT)
		531	{
415	/* is this ugly, I ask? */	532	/* is this ugly, I ask? */
416	while (PL_scopestack_ix)	533	LEAVE_SCOPE (0);
417	LEAVE;
418		534
419	/* sure it is, but more important: is it correct?? :/ */	535	/* sure it is, but more important: is it correct?? :/ */
420	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
421	FREETMPS;	536	FREETMPS;
		537	}
422		538
423	while (PL_curstackinfo->si_next)	539	while (PL_curstackinfo->si_next)
424	PL_curstackinfo = PL_curstackinfo->si_next;	540	PL_curstackinfo = PL_curstackinfo->si_next;
425		541
426	while (PL_curstackinfo)	542	while (PL_curstackinfo)
…		…
431	dSP;	547	dSP;
432	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	548	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
433	PUTBACK; /* possibly superfluous */	549	PUTBACK; /* possibly superfluous */
434	}	550	}
435		551
		552	if (!IN_DESTRUCT)
		553	{
436	dounwind(-1);	554	dounwind(-1);
437
438	SvREFCNT_dec(PL_curstackinfo->si_stack);	555	SvREFCNT_dec(PL_curstackinfo->si_stack);
		556	}
		557
439	Safefree(PL_curstackinfo->si_cxstack);	558	Safefree(PL_curstackinfo->si_cxstack);
440	Safefree(PL_curstackinfo);	559	Safefree(PL_curstackinfo);
441	PL_curstackinfo = p;	560	PL_curstackinfo = p;
442	}	561	}
443		562
…		…
446	Safefree(PL_scopestack);	565	Safefree(PL_scopestack);
447	Safefree(PL_savestack);	566	Safefree(PL_savestack);
448	Safefree(PL_retstack);	567	Safefree(PL_retstack);
449	}	568	}
450		569
		570	static void
		571	allocate_stack (Coro__State ctx, int alloc)
		572	{
		573	coro_stack *stack;
		574
		575	New (0, stack, 1, coro_stack);
		576
		577	stack->refcnt = 1;
		578	stack->usecnt = 1;
		579	stack->gencnt = ctx->gencnt = 0;
		580
		581	if (alloc)
		582	{
		583	#if HAVE_MMAP
		584	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
		585	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		586	if (stack->sptr == (void *)-1)
		587	#endif
		588	{
		589	/FIXME//D//* reasonable stack size! */
		590	stack->ssize = - (8192 * sizeof (long));
		591	New (0, stack->sptr, 8192, long);
		592	}
		593	}
		594	else
		595	stack->sptr = 0;
		596
		597	ctx->stack = stack;
		598	}
		599
		600	static void
		601	deallocate_stack (Coro__State ctx)
		602	{
		603	coro_stack *stack = ctx->stack;
		604
		605	ctx->stack = 0;
		606
		607	if (stack)
		608	{
		609	if (!--stack->refcnt)
		610	{
		611	#ifdef HAVE_MMAP
		612	if (stack->ssize > 0 && stack->sptr)
		613	munmap (stack->sptr, stack->ssize);
		614	else
		615	#endif
		616	Safefree (stack->sptr);
		617
		618	Safefree (stack);
		619	}
		620	else if (ctx->gencnt == stack->gencnt)
		621	--stack->usecnt;
		622	}
		623	}
		624
		625	static void
		626	setup_coro (void *arg)
		627	{
		628	/*
		629	* emulate part of the perl startup here.
		630	*/
		631	dTHX;
		632	dSP;
		633	Coro__State ctx = (Coro__State)arg;
		634	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
		635
		636	coro_init_stacks (aTHX);
		637	/PL_curcop = 0;/
		638	/PL_in_eval = PL_in_eval;/ /* inherit */
		639	SvREFCNT_dec (GvAV (PL_defgv));
		640	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		641
		642	SPAGAIN;
		643
		644	if (ctx->stack)
		645	{
		646	ctx->cursp = 0;
		647
		648	PUSHMARK(SP);
		649	PUTBACK;
		650	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		651
		652	if (SvTRUE (ERRSV))
		653	croak (NULL);
		654	else
		655	croak ("FATAL: CCTXT coroutine returned!");
		656	}
		657	else
		658	{
		659	UNOP myop;
		660
		661	PL_op = (OP *)&myop;
		662
		663	Zero(&myop, 1, UNOP);
		664	myop.op_next = Nullop;
		665	myop.op_flags = OPf_WANT_VOID;
		666
		667	PUSHMARK(SP);
		668	XPUSHs (sub_init);
		669	/*
		670	* the next line is slightly wrong, as PL_op->op_next
		671	* is actually being executed so we skip the first op.
		672	* that doesn't matter, though, since it is only
		673	* pp_nextstate and we never return...
		674	* ah yes, and I don't care anyways ;)
		675	*/
		676	PUTBACK;
		677	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		678	SPAGAIN;
		679
		680	ENTER; /* necessary e.g. for dounwind */
		681	}
		682	}
		683
		684	static void
		685	continue_coro (void *arg)
		686	{
		687	/*
		688	* this is a _very_ stripped down perl interpreter ;)
		689	*/
		690	dTHX;
		691	Coro__State ctx = (Coro__State)arg;
		692	JMPENV coro_start_env;
		693
		694	PL_top_env = &ctx->start_env;
		695
		696	ctx->cursp = 0;
		697	PL_op = PL_op->op_next;
		698	CALLRUNOPS(aTHX);
		699
		700	abort ();
		701	}
		702
451	STATIC void	703	STATIC void
452	transfer(pTHX_ struct coro prev, struct coro next, int flags)	704	transfer (pTHX_ struct coro prev, struct coro next, int flags)
453	{	705	{
454	dSP;	706	dSTACKLEVEL;
455		707
456	if (prev != next)	708	if (prev != next)
457	{	709	{
458	/*
459	* this could be done in newprocess which would lead to
460	* extremely elegant and fast (just SAVE/LOAD)
461	* code here, but lazy allocation of stacks has also
462	* some virtues and the overhead of the if() is nil.
463	*/
464	if (next->mainstack)	710	if (next->mainstack)
465	{	711	{
		712	LOCK;
466	SAVE (prev, flags);	713	SAVE (prev, flags);
467	LOAD (next);	714	LOAD (next);
		715	UNLOCK;
		716
468	/* mark this state as in-use */	717	/* mark this state as in-use */
469	next->mainstack = 0;	718	next->mainstack = 0;
470	next->tmps_ix = -2;	719	next->tmps_ix = -2;
		720
		721	/* stacklevel changed? if yes, grab the stack for us! */
		722	if (flags & TRANSFER_SAVE_CCTXT)
		723	{
		724	if (!prev->stack)
		725	allocate_stack (prev, 0);
		726	else if (prev->cursp != stacklevel
		727	&& prev->stack->usecnt > 1)
		728	{
		729	prev->gencnt = ++prev->stack->gencnt;
		730	prev->stack->usecnt = 1;
		731	}
		732
		733	/* has our stack been invalidated? */
		734	if (next->stack && next->stack->gencnt != next->gencnt)
		735	{
		736	deallocate_stack (next);
		737	allocate_stack (next, 1);
		738	coro_create (&(next->stack->cctx),
		739	continue_coro, (void *)next,
		740	next->stack->sptr, labs (next->stack->ssize));
		741	}
		742
		743	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		744	prev->cursp = stacklevel;
		745	/* don't add any code here */
		746	}
		747	else
		748	next->cursp = stacklevel;
471	}	749	}
472	else if (next->tmps_ix == -2)	750	else if (next->tmps_ix == -2)
473	{
474	croak ("tried to transfer to running coroutine");	751	croak ("tried to transfer to running coroutine");
475	}
476	else	752	else
477	{	753	{
478	/*	754	LOCK;
479	* emulate part of the perl startup here.
480	*/
481	UNOP myop;
482
483	SAVE (prev, -1); /* first get rid of the old state */	755	SAVE (prev, -1); /* first get rid of the old state */
		756	UNLOCK;
484		757
485	init_stacks (); /* from perl.c */	758	if (flags & TRANSFER_SAVE_CCTXT)
486	SPAGAIN;
487
488	PL_op = (OP *)&myop;
489	/PL_curcop = 0;/
490	SvREFCNT_dec (GvAV (PL_defgv));
491	GvAV (PL_defgv) = next->args;
492
493	Zero(&myop, 1, UNOP);
494	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;
496
497	PUSHMARK(SP);
498	XPUSHs ((SV*)get_cv(SUB_INIT, TRUE));
499	/*
500	* the next line is slightly wrong, as PL_op->op_next
501	* is actually being executed so we skip the first op.
502	* that doesn't matter, though, since it is only
503	* pp_nextstate and we never return...
504	* ah yes, and I don't care anyways ;)
505	*/	759	{
506	PUTBACK;	760	if (!prev->stack)
507	PL_op = pp_entersub(aTHX);	761	allocate_stack (prev, 0);
508	SPAGAIN;
509		762
510	ENTER; /* necessary e.g. for dounwind */	763	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
		764	{
		765	PL_top_env = &next->start_env;
		766
		767	setup_coro (next);
		768	next->cursp = stacklevel;
		769
		770	prev->stack->refcnt++;
		771	prev->stack->usecnt++;
		772	next->stack = prev->stack;
		773	next->gencnt = prev->gencnt;
		774	}
		775	else
		776	{
		777	assert (!next->stack);
		778	allocate_stack (next, 1);
		779	coro_create (&(next->stack->cctx),
		780	setup_coro, (void *)next,
		781	next->stack->sptr, labs (next->stack->ssize));
		782	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		783	prev->cursp = stacklevel;
		784	/* don't add any code here */
		785	}
		786	}
		787	else
		788	{
		789	setup_coro (next);
		790	next->cursp = stacklevel;
		791	}
511	}	792	}
512	}	793	}
		794
		795	LOCK;
		796	if (coro_mortal)
		797	{
		798	SvREFCNT_dec (coro_mortal);
		799	coro_mortal = 0;
		800	}
		801	UNLOCK;
		802	}
		803
		804	#define SV_CORO(sv,func) \
		805	do { \
		806	if (SvROK (sv)) \
		807	sv = SvRV (sv); \
		808	\
		809	if (SvTYPE (sv) == SVt_PVHV) \
		810	{ \
		811	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		812	\
		813	if (!he) \
		814	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		815	\
		816	(sv) = SvRV (HeVAL(he)); \
		817	} \
		818	\
		819	/* must also be changed inside Coro::Cont::yield */ \
		820	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		821	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		822	\
		823	} while(0)
		824
		825	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		826
		827	static void
		828	api_transfer(pTHX_ SV prev, SV next, int flags)
		829	{
		830	SV_CORO (prev, "Coro::transfer");
		831	SV_CORO (next, "Coro::transfer");
		832
		833	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		834	}
		835
		836	/ Coro ******************************************************************/
		837
		838	#define PRIO_MAX 3
		839	#define PRIO_HIGH 1
		840	#define PRIO_NORMAL 0
		841	#define PRIO_LOW -1
		842	#define PRIO_IDLE -3
		843	#define PRIO_MIN -4
		844
		845	/* for Coro.pm */
		846	static GV coro_current, coro_idle;
		847	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		848	static int coro_nready;
		849
		850	static void
		851	coro_enq (pTHX_ SV *sv)
		852	{
		853	if (SvTYPE (sv) == SVt_PVHV)
		854	{
		855	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		856	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		857
		858	prio = prio > PRIO_MAX ? PRIO_MAX
		859	: prio < PRIO_MIN ? PRIO_MIN
		860	: prio;
		861
		862	av_push (coro_ready [prio - PRIO_MIN], sv);
		863	coro_nready++;
		864
		865	return;
		866	}
		867
		868	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		869	}
		870
		871	static SV *
		872	coro_deq (pTHX_ int min_prio)
		873	{
		874	int prio = PRIO_MAX - PRIO_MIN;
		875
		876	min_prio -= PRIO_MIN;
		877	if (min_prio < 0)
		878	min_prio = 0;
		879
		880	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		881	if (av_len (coro_ready[prio]) >= 0)
		882	{
		883	coro_nready--;
		884	return av_shift (coro_ready[prio]);
		885	}
		886
		887	return 0;
		888	}
		889
		890	static void
		891	api_ready (SV *coro)
		892	{
		893	dTHX;
		894
		895	if (SvROK (coro))
		896	coro = SvRV (coro);
		897
		898	LOCK;
		899	coro_enq (aTHX_ SvREFCNT_inc (coro));
		900	UNLOCK;
		901	}
		902
		903	static void
		904	api_schedule (void)
		905	{
		906	dTHX;
		907
		908	SV prev, next;
		909
		910	LOCK;
		911
		912	prev = SvRV (GvSV (coro_current));
		913	next = coro_deq (aTHX_ PRIO_MIN);
		914
		915	if (!next)
		916	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		917
		918	/* free this only after the transfer */
		919	coro_mortal = prev;
		920	SV_CORO (prev, "Coro::schedule");
		921
		922	SvRV (GvSV (coro_current)) = next;
		923
		924	SV_CORO (next, "Coro::schedule");
		925
		926	UNLOCK;
		927
		928	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		929	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		930	}
		931
		932	static void
		933	api_cede (void)
		934	{
		935	dTHX;
		936
		937	LOCK;
		938	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		939	UNLOCK;
		940
		941	api_schedule ();
513	}	942	}
514		943
515	MODULE = Coro::State PACKAGE = Coro::State	944	MODULE = Coro::State PACKAGE = Coro::State
516		945
517	PROTOTYPES: ENABLE	946	PROTOTYPES: ENABLE
518		947
519	BOOT:	948	BOOT:
520	{ /* {} necessary for stoopid perl-5.6.x */	949	{ /* {} necessary for stoopid perl-5.6.x */
		950	#ifdef USE_ITHREADS
		951	MUTEX_INIT (&coro_mutex);
		952	#endif
		953
		954	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
		955	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
521	HV * stash = gv_stashpvn("Coro::State", 10, TRUE);	956	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
522		957
523	newCONSTSUB (stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	958	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
524	newCONSTSUB (stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	959	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
525	newCONSTSUB (stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	960	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
526		961	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
527	if (!padlist_cache)
528	padlist_cache = newHV ();
529		962
530	main_mainstack = PL_mainstack;	963	main_mainstack = PL_mainstack;
		964
		965	coroapi.ver = CORO_API_VERSION;
		966	coroapi.transfer = api_transfer;
531	}	967	}
532		968
533	Coro::State	969	Coro::State
534	_newprocess(args)	970	_newprocess(args)
535	SV * args	971	SV * args
…		…
538	Coro__State coro;	974	Coro__State coro;
539		975
540	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	976	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
541	croak ("Coro::State::_newprocess expects an arrayref");	977	croak ("Coro::State::_newprocess expects an arrayref");
542		978
543	New (0, coro, 1, struct coro);	979	Newz (0, coro, 1, struct coro);
544		980
		981	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
545	coro->mainstack = 0; /* actual work is done inside transfer */	982	coro->mainstack = 0; /* actual work is done inside transfer */
546	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	983	coro->stack = 0;
		984
		985	/* same as JMPENV_BOOTSTRAP */
		986	/* we might be able to recycle start_env, but safe is safe */
		987	//Zero(&coro->start_env, 1, JMPENV);
		988	coro->start_env.je_ret = -1;
		989	coro->start_env.je_mustcatch = TRUE;
547		990
548	RETVAL = coro;	991	RETVAL = coro;
549	OUTPUT:	992	OUTPUT:
550	RETVAL	993	RETVAL
551		994
552	void	995	void
553	transfer(prev, next, flags = TRANSFER_SAVE_ALL)	996	transfer(prev, next, flags)
554	Coro::State_or_hashref prev	997	SV *prev
555	Coro::State_or_hashref next	998	SV *next
556	int flags	999	int flags
557	PROTOTYPE: @	1000	PROTOTYPE: @
558	CODE:	1001	CODE:
559		1002	PUTBACK;
		1003	SV_CORO (next, "Coro::transfer");
		1004	SV_CORO (prev, "Coro::transfer");
560	transfer (aTHX_ prev, next, flags);	1005	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		1006	SPAGAIN;
561		1007
562	void	1008	void
563	DESTROY(coro)	1009	DESTROY(coro)
564	Coro::State coro	1010	Coro::State coro
565	CODE:	1011	CODE:
566		1012
567	if (coro->mainstack && coro->mainstack != main_mainstack)	1013	if (coro->mainstack && coro->mainstack != main_mainstack)
568	{	1014	{
569	struct coro temp;	1015	struct coro temp;
570		1016
		1017	PUTBACK;
571	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1018	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
572	LOAD(aTHX_ coro);	1019	LOAD(aTHX_ coro);
		1020	SPAGAIN;
573		1021
574	destroy_stacks ();	1022	destroy_stacks (aTHX);
575		1023
576	LOAD((&temp)); /* this will get rid of defsv etc.. */	1024	LOAD((&temp)); /* this will get rid of defsv etc.. */
		1025	SPAGAIN;
		1026
		1027	coro->mainstack = 0;
577	}	1028	}
578		1029
		1030	deallocate_stack (coro);
		1031	SvREFCNT_dec (coro->args);
579	Safefree (coro);	1032	Safefree (coro);
580		1033
581	/*
582	* there is one problematic case left (remember _recurse?)
583	* consider the case when we
584	*
585	* 1. start a coroutine
586	* 2. inside it descend into some xs functions
587	* 3. xs function calls a callback
588	* 4. callback switches to $main
589	* 5. $main ends - we will end inside the xs function
590	* 6. xs function returns and perl executes - what?
591	*
592	* to avoid this case we recurse in this function
593	* and simply call my_exit(0), skipping other xs functions
594	*/
595
596	#if 0
597	void	1034	void
598	_recurse()	1035	_exit(code)
		1036	int code
		1037	PROTOTYPE: $
599	CODE:	1038	CODE:
600	LEAVE;	1039	_exit (code);
601	PL_stack_sp = PL_stack_base + ax - 1;
602	PL_op = PL_op->op_next;
603	CALLRUNOPS(aTHX);
604	printf ("my_exit\n");
605	my_exit (0);
606		1040
607	#endif	1041	MODULE = Coro::State PACKAGE = Coro::Cont
		1042
		1043	# this is slightly dirty (should expose a c-level api)
608		1044
609	void	1045	void
610	flush()	1046	yield(...)
611	CODE:
612	#ifdef MAY_FLUSH
613	flush_padlist_cache ();
614	#endif
615
616	MODULE = Coro::State PACKAGE = Coro::Cont
617
618	# this is dirty (do you hear me?) and should be in it's own .xs
619
620	void
621	result(...)
622	PROTOTYPE: @	1047	PROTOTYPE: @
623	CODE:	1048	CODE:
624	static SV *returnstk;	1049	static SV *returnstk;
625	SV *sv;	1050	SV *sv;
626	AV *defav = GvAV (PL_defgv);	1051	AV *defav = GvAV (PL_defgv);
627	struct coro prev, next;	1052	struct coro prev, next;
628		1053
629	if (!returnstk)	1054	if (!returnstk)
630	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1055	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
631		1056
632	/* set up @_ -- ugly */	1057	/* set up @_ -- ugly */
633	av_clear (defav);	1058	av_clear (defav);
634	av_fill (defav, items - 1);	1059	av_fill (defav, items - 1);
635	while (items--)	1060	while (items--)
…		…
638	mg_get (returnstk); /* isn't documentation wrong for mg_get? */	1063	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
639	sv = av_pop ((AV *)SvRV (returnstk));	1064	sv = av_pop ((AV *)SvRV (returnstk));
640	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1065	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
641	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1066	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
642	SvREFCNT_dec (sv);	1067	SvREFCNT_dec (sv);
		1068
643	transfer(prev, next, 0);	1069	transfer(aTHX_ prev, next, 0);
644		1070
		1071	MODULE = Coro::State PACKAGE = Coro
		1072
		1073	# this is slightly dirty (should expose a c-level api)
		1074
		1075	BOOT:
		1076	{
		1077	int i;
		1078	HV *stash = gv_stashpv ("Coro", TRUE);
		1079
		1080	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1081	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1082	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1083	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1084	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1085	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1086
		1087	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1088	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1089
		1090	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1091	coro_ready[i] = newAV ();
		1092
		1093	{
		1094	SV *sv = perl_get_sv("Coro::API", 1);
		1095
		1096	coroapi.schedule = api_schedule;
		1097	coroapi.cede = api_cede;
		1098	coroapi.ready = api_ready;
		1099	coroapi.nready = &coro_nready;
		1100	coroapi.current = coro_current;
		1101
		1102	GCoroAPI = &coroapi;
		1103	sv_setiv(sv, (IV)&coroapi);
		1104	SvREADONLY_on(sv);
		1105	}
		1106	}
		1107
		1108	#if !PERL_MICRO
		1109
		1110	void
		1111	ready(self)
		1112	SV * self
		1113	PROTOTYPE: $
		1114	CODE:
		1115	api_ready (self);
		1116
		1117	#endif
		1118
		1119	int
		1120	nready(...)
		1121	PROTOTYPE:
		1122	CODE:
		1123	RETVAL = coro_nready;
		1124	OUTPUT:
		1125	RETVAL
		1126
		1127	void
		1128	schedule(...)
		1129	PROTOTYPE:
		1130	CODE:
		1131	api_schedule ();
		1132
		1133	void
		1134	cede(...)
		1135	PROTOTYPE:
		1136	CODE:
		1137	api_cede ();
		1138

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Comparing Coro/Coro/State.xs (file contents): Revision 1.12 by root, Sun Jul 22 03:24:10 2001 UTC vs. Revision 1.56 by pcg, Thu Apr 1 02:41:05 2004 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.12 by root, Sun Jul 22 03:24:10 2001 UTC vs.
Revision 1.56 by pcg, Thu Apr 1 02:41:05 2004 UTC