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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.9 by root, Sat Jul 21 02:49:09 2001 UTC vs.
Revision 1.89 by root, Sat Nov 25 00:40:26 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 1	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
		34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		35	# undef STACKGUARD
		36	#endif
		37
		38	#ifndef STACKGUARD
		39	# define STACKGUARD 0
		40	#endif
		41
		42	#ifdef HAVE_MMAP
		43	# include <unistd.h>
		44	# include <sys/mman.h>
		45	# ifndef MAP_ANONYMOUS
		46	# ifdef MAP_ANON
		47	# define MAP_ANONYMOUS MAP_ANON
		48	# else
		49	# undef HAVE_MMAP
		50	# endif
		51	# endif
		52	# include <limits.h>
		53	# ifndef PAGESIZE
		54	# define PAGESIZE pagesize
		55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		56	static long pagesize;
		57	# else
		58	# define BOOT_PAGESIZE
		59	# endif
		60	#endif
		61
		62	#define SUB_INIT "Coro::State::initialize"
		63
		64	/* The next macro should declare a variable stacklevel that contains and approximation
		65	* to the current C stack pointer. Its property is that it changes with each call
		66	* and should be unique. */
		67	#define dSTACKLEVEL void *stacklevel = &stacklevel
		68
		69	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		70
		71	#define labs(l) ((l) >= 0 ? (l) : -(l))
		72
		73	#include "CoroAPI.h"
		74
		75	#ifdef USE_ITHREADS
		76	static perl_mutex coro_mutex;
		77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
7	#else	79	#else
8	# define CHK(x) if (!(x)) croak("FATAL, CHK: " #x)	80	# define LOCK (void)0
		81	# define UNLOCK (void)0
9	#endif	82	#endif
10		83
11	#define MAY_FLUSH /* increases codesize */	84	static struct CoroAPI coroapi;
		85	static AV main_mainstack; / used to differentiate between $main and others */
		86	static HV coro_state_stash, coro_stash;
		87	static SV coro_mortal; / will be freed after next transfer */
12		88
13	#define SUB_INIT "Coro::State::_newcoro"	89	/* this is actually not just the c stack but also c registers etc... */
		90	typedef struct coro_stack {
		91	struct coro_stack *next;
14		92
15	#define SAVE_DEFAV 0x00000001	93	void *idle_sp;
16	#define SAVE_DEFSV 0x00000002	94	void *sptr;
17	#define SAVE_ERRSV 0x00000004	95	long ssize; /* positive == mmap, otherwise malloc */
18		96
19	#define SAVE_ALL -1	97	/* cpu state */
		98	coro_context cctx;
		99	} coro_stack;
		100
		101	static coro_stack *main_stack;
20		102
21	struct coro {	103	struct coro {
22	/* optionally saved, might be zero */	104	/* optionally saved, might be zero */
23	AV *defav;	105	AV *defav;
24	SV *defsv;	106	SV *defsv;
25	SV *errsv;	107	SV *errsv;
26		108
27	/* saved global state not related to stacks */	109	/* saved global state not related to stacks */
28	U8 dowarn;	110	U8 dowarn;
		111	I32 in_eval;
		112
		113	/* the c stack, if any */
		114	coro_stack *stack;
29		115
30	/* the stacks and related info (callchain etc..) */	116	/* the stacks and related info (callchain etc..) */
31	PERL_SI *curstackinfo;	117	PERL_SI *curstackinfo;
32	AV *curstack;	118	AV *curstack;
33	AV *mainstack;	119	AV *mainstack;
34	SV **stack_sp;	120	SV **stack_sp;
35	OP *op;	121	OP *op;
36	SV **curpad;	122	SV **curpad;
		123	AV *comppad;
		124	CV *compcv;
37	SV **stack_base;	125	SV **stack_base;
38	SV **stack_max;	126	SV **stack_max;
39	SV **tmps_stack;	127	SV **tmps_stack;
40	I32 tmps_floor;	128	I32 tmps_floor;
41	I32 tmps_ix;	129	I32 tmps_ix;
50	I32 savestack_ix;	138	I32 savestack_ix;
51	I32 savestack_max;	139	I32 savestack_max;
52	OP **retstack;	140	OP **retstack;
53	I32 retstack_ix;	141	I32 retstack_ix;
54	I32 retstack_max;	142	I32 retstack_max;
		143	PMOP *curpm;
55	COP *curcop;	144	COP *curcop;
		145	JMPENV *top_env;
		146
		147	/* coro process data */
		148	int prio;
56		149
57	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
58	AV *args;	151	AV *args;
		152	int refcnt;
59	};	153	};
60		154
61	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
62	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
63		157
64	static HV *padlist_cache;	158	static AV *
65		159	coro_clone_padlist (pTHX_ CV *cv)
66	/* mostly copied from op.c:cv_clone2 */
67	STATIC AV *
68	clone_padlist (AV *protopadlist)
69	{	160	{
70	AV *av;	161	AV *padlist = CvPADLIST (cv);
71	I32 ix;
72	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
73	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
74	SV **pname = AvARRAY (protopad_name);
75	SV **ppad = AvARRAY (protopad);
76	I32 fname = AvFILLp (protopad_name);
77	I32 fpad = AvFILLp (protopad);
78	AV newpadlist, newpad_name, *newpad;	162	AV newpadlist, newpad;
79	SV **npad;
80
81	newpad_name = newAV ();
82	for (ix = fname; ix >= 0; ix--)
83	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
84
85	newpad = newAV ();
86	av_fill (newpad, AvFILLp (protopad));
87	npad = AvARRAY (newpad);
88		163
89	newpadlist = newAV ();	164	newpadlist = newAV ();
90	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
91	av_store (newpadlist, 0, (SV *) newpad_name);	166	#if PERL_VERSION < 9
		167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		168	#else
		169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		170	#endif
		171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		172	--AvFILLp (padlist);
		173
		174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
92	av_store (newpadlist, 1, (SV *) newpad);	175	av_store (newpadlist, 1, (SV *)newpad);
93		176
94	av = newAV (); /* will be @_ */	177	return newpadlist;
95	av_extend (av, 0);	178	}
96	av_store (newpad, 0, (SV *) av);
97	AvFLAGS (av) = AVf_REIFY;
98		179
99	for (ix = fpad; ix > 0; ix--)	180	static void
		181	free_padlist (pTHX_ AV *padlist)
		182	{
		183	/* may be during global destruction */
		184	if (SvREFCNT (padlist))
100	{	185	{
101	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	186	I32 i = AvFILLp (padlist);
102	if (namesv && namesv != &PL_sv_undef)	187	while (i >= 0)
103	{	188	{
104	char name = SvPVX (namesv); / XXX */	189	SV **svp = av_fetch (padlist, i--, FALSE);
105	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	190	if (svp)
106	{ /* lexical from outside? */
107	npad[ix] = SvREFCNT_inc (ppad[ix]);
108	}	191	{
109	else
110	{ /* our own lexical */
111	SV *sv;	192	SV *sv;
112	if (*name == '&')	193	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
113	sv = SvREFCNT_inc (ppad[ix]);	194	SvREFCNT_dec (sv);
114	else if (*name == '@')	195
115	sv = (SV *) newAV ();	196	SvREFCNT_dec (*svp);
116	else if (*name == '%')
117	sv = (SV *) newHV ();
118	else
119	sv = NEWSV (0, 0);
120	if (!SvPADBUSY (sv))
121	SvPADMY_on (sv);
122	npad[ix] = sv;
123	}	197	}
124	}	198	}
125	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	199
126	{	200	SvREFCNT_dec ((SV*)padlist);
127	npad[ix] = SvREFCNT_inc (ppad[ix]);
128	}
129	else
130	{
131	SV *sv = NEWSV (0, 0);
132	SvPADTMP_on (sv);
133	npad[ix] = sv;
134	}
135	}	201	}
		202	}
136		203
137	#if 0 /* return -ENOTUNDERSTOOD */	204	static int
138	/* Now that vars are all in place, clone nested closures. */	205	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		206	{
		207	AV *padlist;
		208	AV av = (AV )mg->mg_obj;
139		209
140	for (ix = fpad; ix > 0; ix--) {	210	/* casting is fun. */
141	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
142	if (namesv	212	free_padlist (aTHX_ padlist);
143	&& namesv != &PL_sv_undef	213
144	&& !(SvFLAGS(namesv) & SVf_FAKE)	214	SvREFCNT_dec (av);
145	&& *SvPVX(namesv) == '&'	215
146	&& CvCLONE(ppad[ix]))	216	return 0;
147	{	217	}
148	CV kid = cv_clone((CV)ppad[ix]);	218
149	SvREFCNT_dec(ppad[ix]);	219	#define PERL_MAGIC_coro PERL_MAGIC_ext
150	CvCLONE_on(kid);	220
151	SvPADMY_on(kid);	221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
152	npad[ix] = (SV*)kid;	222
153	}	223	/* the next two functions merely cache the padlists */
		224	static void
		225	get_padlist (pTHX_ CV *cv)
		226	{
		227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		228
		229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
		230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
		231	else
		232	{
		233	#if 0
		234	/* this should work - but it doesn't :( */
		235	CV *cp = Perl_cv_clone (aTHX_ cv);
		236	CvPADLIST (cv) = CvPADLIST (cp);
		237	CvPADLIST (cp) = 0;
		238	SvREFCNT_dec (cp);
		239	#else
		240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		241	#endif
		242	}
		243	}
		244
		245	static void
		246	put_padlist (pTHX_ CV *cv)
		247	{
		248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		249
		250	if (!mg)
		251	{
		252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		254	mg->mg_virtual = &vtbl_coro;
		255	mg->mg_obj = (SV *)newAV ();
154	}	256	}
155	#endif
156		257
157	return newpadlist;
158	}
159
160	#ifdef MAY_FLUSH
161	STATIC AV *
162	free_padlist (AV *padlist)
163	{
164	/* may be during global destruction */
165	if (SvREFCNT(padlist))
166	{
167	I32 i = AvFILLp(padlist);
168	while (i >= 0)
169	{
170	SV **svp = av_fetch(padlist, i--, FALSE);
171	SV sv = svp ? svp : Nullsv;
172	if (sv)
173	SvREFCNT_dec(sv);
174	}
175
176	SvREFCNT_dec((SV*)padlist);
177	}
178	}
179	#endif
180
181	/* the next two functions merely cache the padlists */
182	STATIC void
183	get_padlist (CV *cv)
184	{
185	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
186
187	if (he && AvFILLp ((AV )he) >= 0)
188	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
189	else
190	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
191	}
192
193	STATIC void
194	put_padlist (CV *cv)
195	{
196	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
197
198	if (SvTYPE (*he) != SVt_PVAV)
199	{
200	SvREFCNT_dec (*he);
201	he = (SV )newAV ();
202	}
203
204	av_push ((AV )he, (SV *)CvPADLIST (cv));	258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
205	}	259	}
206
207	#ifdef MAY_FLUSH
208	STATIC void
209	flush_padlist_cache ()
210	{
211	HV *hv = padlist_cache;
212	padlist_cache = newHV ();
213
214	if (hv_iterinit (hv))
215	{
216	HE *he;
217	AV *padlist;
218
219	while (!!(he = hv_iternext (hv)))
220	{
221	AV av = (AV )HeVAL(he);
222
223	/* casting is fun. */
224	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
225	free_padlist (padlist);
226	}
227	}
228
229	SvREFCNT_dec (hv);
230	}
231	#endif
232		260
233	#define SB do {	261	#define SB do {
234	#define SE } while (0)	262	#define SE } while (0)
235		263
236	#define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE	264	#define LOAD(state) load_state(aTHX_ (state));
237	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE	265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
238		266
239	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
240		268
241	static void	269	static void
242	load_state(pTHX_ Coro__State c)	270	load_state(pTHX_ Coro__State c)
243	{	271	{
244	PL_dowarn = c->dowarn;	272	PL_dowarn = c->dowarn;
		273	PL_in_eval = c->in_eval;
245		274
246	PL_curstackinfo = c->curstackinfo;	275	PL_curstackinfo = c->curstackinfo;
247	PL_curstack = c->curstack;	276	PL_curstack = c->curstack;
248	PL_mainstack = c->mainstack;	277	PL_mainstack = c->mainstack;
249	PL_stack_sp = c->stack_sp;	278	PL_stack_sp = c->stack_sp;
250	PL_op = c->op;	279	PL_op = c->op;
251	PL_curpad = c->curpad;	280	PL_curpad = c->curpad;
		281	PL_comppad = c->comppad;
		282	PL_compcv = c->compcv;
252	PL_stack_base = c->stack_base;	283	PL_stack_base = c->stack_base;
253	PL_stack_max = c->stack_max;	284	PL_stack_max = c->stack_max;
254	PL_tmps_stack = c->tmps_stack;	285	PL_tmps_stack = c->tmps_stack;
255	PL_tmps_floor = c->tmps_floor;	286	PL_tmps_floor = c->tmps_floor;
256	PL_tmps_ix = c->tmps_ix;	287	PL_tmps_ix = c->tmps_ix;
…		…
262	PL_scopestack_ix = c->scopestack_ix;	293	PL_scopestack_ix = c->scopestack_ix;
263	PL_scopestack_max = c->scopestack_max;	294	PL_scopestack_max = c->scopestack_max;
264	PL_savestack = c->savestack;	295	PL_savestack = c->savestack;
265	PL_savestack_ix = c->savestack_ix;	296	PL_savestack_ix = c->savestack_ix;
266	PL_savestack_max = c->savestack_max;	297	PL_savestack_max = c->savestack_max;
		298	#if PERL_VERSION < 9
267	PL_retstack = c->retstack;	299	PL_retstack = c->retstack;
268	PL_retstack_ix = c->retstack_ix;	300	PL_retstack_ix = c->retstack_ix;
269	PL_retstack_max = c->retstack_max;	301	PL_retstack_max = c->retstack_max;
		302	#endif
		303	PL_curpm = c->curpm;
270	PL_curcop = c->curcop;	304	PL_curcop = c->curcop;
		305	PL_top_env = c->top_env;
271		306
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
275		310
…		…
282	{	317	{
283	AV padlist = (AV )POPs;	318	AV padlist = (AV )POPs;
284		319
285	if (padlist)	320	if (padlist)
286	{	321	{
287	put_padlist (cv); /* mark this padlist as available */	322	put_padlist (aTHX_ cv); /* mark this padlist as available */
288	CvPADLIST(cv) = padlist;	323	CvPADLIST(cv) = padlist;
289	#ifdef USE_THREADS
290	/CvOWNER(cv) = (struct perl_thread )POPs;*/
291	#endif
292	}	324	}
293		325
294	++CvDEPTH(cv);	326	++CvDEPTH(cv);
295	}	327	}
296		328
…		…
302	save_state(pTHX_ Coro__State c, int flags)	334	save_state(pTHX_ Coro__State c, int flags)
303	{	335	{
304	{	336	{
305	dSP;	337	dSP;
306	I32 cxix = cxstack_ix;	338	I32 cxix = cxstack_ix;
		339	PERL_CONTEXT *ccstk = cxstack;
307	PERL_SI *top_si = PL_curstackinfo;	340	PERL_SI *top_si = PL_curstackinfo;
308	PERL_CONTEXT *ccstk = cxstack;
309		341
310	/*	342	/*
311	* the worst thing you can imagine happens first - we have to save	343	* the worst thing you can imagine happens first - we have to save
312	* (and reinitialize) all cv's in the whole callchain :(	344	* (and reinitialize) all cv's in the whole callchain :(
313	*/	345	*/
314		346
315	PUSHs (Nullsv);	347	PUSHs (Nullsv);
316	/* this loop was inspired by pp_caller */	348	/* this loop was inspired by pp_caller */
317	for (;;)	349	for (;;)
318	{	350	{
319	do	351	while (cxix >= 0)
320	{	352	{
321	PERL_CONTEXT *cx = &ccstk[cxix--];	353	PERL_CONTEXT *cx = &ccstk[cxix--];
322		354
323	if (CxTYPE(cx) == CXt_SUB)	355	if (CxTYPE(cx) == CXt_SUB)
324	{	356	{
325	CV *cv = cx->blk_sub.cv;	357	CV *cv = cx->blk_sub.cv;
326	if (CvDEPTH(cv))	358	if (CvDEPTH(cv))
327	{	359	{
328	#ifdef USE_THREADS
329	/XPUSHs ((SV )CvOWNER(cv));*/
330	/CvOWNER(cv) = 0;/
331	/error must unlock this cv etc.. etc.../
332	#endif
333	EXTEND (SP, CvDEPTH(cv)*2);	360	EXTEND (SP, CvDEPTH(cv)*2);
334		361
335	while (--CvDEPTH(cv))	362	while (--CvDEPTH(cv))
336	{	363	{
337	/* this tells the restore code to increment CvDEPTH */	364	/* this tells the restore code to increment CvDEPTH */
…		…
340	}	367	}
341		368
342	PUSHs ((SV *)CvPADLIST(cv));	369	PUSHs ((SV *)CvPADLIST(cv));
343	PUSHs ((SV *)cv);	370	PUSHs ((SV *)cv);
344		371
345	get_padlist (cv); /* this is a monster */	372	get_padlist (aTHX_ cv);
346	}	373	}
347	}	374	}
		375	#ifdef CXt_FORMAT
348	else if (CxTYPE(cx) == CXt_FORMAT)	376	else if (CxTYPE(cx) == CXt_FORMAT)
349	{	377	{
350	/* I never used formats, so how should I know how these are implemented? */	378	/* I never used formats, so how should I know how these are implemented? */
351	/* my bold guess is as a simple, plain sub... */	379	/* my bold guess is as a simple, plain sub... */
352	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	380	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
353	}	381	}
		382	#endif
354	}	383	}
355	while (cxix >= 0);
356		384
357	if (top_si->si_type == PERLSI_MAIN)	385	if (top_si->si_type == PERLSI_MAIN)
358	break;	386	break;
359		387
360	top_si = top_si->si_prev;	388	top_si = top_si->si_prev;
…		…
363	}	391	}
364		392
365	PUTBACK;	393	PUTBACK;
366	}	394	}
367		395
368	c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
369	c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
370	c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
371		399
372	c->dowarn = PL_dowarn;	400	c->dowarn = PL_dowarn;
		401	c->in_eval = PL_in_eval;
373		402
374	c->curstackinfo = PL_curstackinfo;	403	c->curstackinfo = PL_curstackinfo;
375	c->curstack = PL_curstack;	404	c->curstack = PL_curstack;
376	c->mainstack = PL_mainstack;	405	c->mainstack = PL_mainstack;
377	c->stack_sp = PL_stack_sp;	406	c->stack_sp = PL_stack_sp;
378	c->op = PL_op;	407	c->op = PL_op;
379	c->curpad = PL_curpad;	408	c->curpad = PL_curpad;
		409	c->comppad = PL_comppad;
		410	c->compcv = PL_compcv;
380	c->stack_base = PL_stack_base;	411	c->stack_base = PL_stack_base;
381	c->stack_max = PL_stack_max;	412	c->stack_max = PL_stack_max;
382	c->tmps_stack = PL_tmps_stack;	413	c->tmps_stack = PL_tmps_stack;
383	c->tmps_floor = PL_tmps_floor;	414	c->tmps_floor = PL_tmps_floor;
384	c->tmps_ix = PL_tmps_ix;	415	c->tmps_ix = PL_tmps_ix;
…		…
390	c->scopestack_ix = PL_scopestack_ix;	421	c->scopestack_ix = PL_scopestack_ix;
391	c->scopestack_max = PL_scopestack_max;	422	c->scopestack_max = PL_scopestack_max;
392	c->savestack = PL_savestack;	423	c->savestack = PL_savestack;
393	c->savestack_ix = PL_savestack_ix;	424	c->savestack_ix = PL_savestack_ix;
394	c->savestack_max = PL_savestack_max;	425	c->savestack_max = PL_savestack_max;
		426	#if PERL_VERSION < 9
395	c->retstack = PL_retstack;	427	c->retstack = PL_retstack;
396	c->retstack_ix = PL_retstack_ix;	428	c->retstack_ix = PL_retstack_ix;
397	c->retstack_max = PL_retstack_max;	429	c->retstack_max = PL_retstack_max;
		430	#endif
		431	c->curpm = PL_curpm;
398	c->curcop = PL_curcop;	432	c->curcop = PL_curcop;
		433	c->top_env = PL_top_env;
		434	}
		435
		436	/*
		437	* allocate various perl stacks. This is an exact copy
		438	* of perl.c:init_stacks, except that it uses less memory
		439	* on the (sometimes correct) assumption that coroutines do
		440	* not usually need a lot of stackspace.
		441	*/
		442	static void
		443	coro_init_stacks (pTHX)
		444	{
		445	LOCK;
		446
		447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
		448	PL_curstackinfo->si_type = PERLSI_MAIN;
		449	PL_curstack = PL_curstackinfo->si_stack;
		450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
		451
		452	PL_stack_base = AvARRAY(PL_curstack);
		453	PL_stack_sp = PL_stack_base;
		454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
		455
		456	New(50,PL_tmps_stack,96,SV*);
		457	PL_tmps_floor = -1;
		458	PL_tmps_ix = -1;
		459	PL_tmps_max = 96;
		460
		461	New(54,PL_markstack,16,I32);
		462	PL_markstack_ptr = PL_markstack;
		463	PL_markstack_max = PL_markstack + 16;
		464
		465	#ifdef SET_MARK_OFFSET
		466	SET_MARK_OFFSET;
		467	#endif
		468
		469	New(54,PL_scopestack,16,I32);
		470	PL_scopestack_ix = 0;
		471	PL_scopestack_max = 16;
		472
		473	New(54,PL_savestack,96,ANY);
		474	PL_savestack_ix = 0;
		475	PL_savestack_max = 96;
		476
		477	#if PERL_VERSION < 9
		478	New(54,PL_retstack,8,OP*);
		479	PL_retstack_ix = 0;
		480	PL_retstack_max = 8;
		481	#endif
		482
		483	UNLOCK;
399	}	484	}
400		485
401	/*	486	/*
402	* destroy the stacks, the callchain etc...	487	* destroy the stacks, the callchain etc...
403	* still there is a memleak of 128 bytes...
404	*/	488	*/
405	STATIC void	489	static void
406	destroy_stacks(pTHX)	490	destroy_stacks(pTHX)
407	{	491	{
		492	if (!IN_DESTRUCT)
		493	{
408	/* is this ugly, I ask? */	494	/* is this ugly, I ask? */
409	while (PL_scopestack_ix)	495	LEAVE_SCOPE (0);
410	LEAVE;
411		496
412	/* sure it is, but more important: is it correct?? :/ */	497	/* sure it is, but more important: is it correct?? :/ */
413	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
414	FREETMPS;	498	FREETMPS;
		499
		500	/POPSTACK_TO (PL_mainstack);//D//use/
		501	}
415		502
416	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
417	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
418		505
419	while (PL_curstackinfo)	506	while (PL_curstackinfo)
420	{	507	{
421	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
422		509
423	{	510	{ /D//remove/
424	dSP;	511	dSP;
425	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	512	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
426	PUTBACK; /* possibly superfluous */	513	PUTBACK; /* possibly superfluous */
427	}	514	}
428		515
429	dounwind(-1);	516	if (!IN_DESTRUCT)
430		517	{
		518	dounwind (-1);/D//remove/
431	SvREFCNT_dec(PL_curstackinfo->si_stack);	519	SvREFCNT_dec (PL_curstackinfo->si_stack);
		520	}
		521
432	Safefree(PL_curstackinfo->si_cxstack);	522	Safefree (PL_curstackinfo->si_cxstack);
433	Safefree(PL_curstackinfo);	523	Safefree (PL_curstackinfo);
434	PL_curstackinfo = p;	524	PL_curstackinfo = p;
435	}	525	}
436		526
437	Safefree(PL_tmps_stack);	527	Safefree (PL_tmps_stack);
438	Safefree(PL_markstack);	528	Safefree (PL_markstack);
439	Safefree(PL_scopestack);	529	Safefree (PL_scopestack);
440	Safefree(PL_savestack);	530	Safefree (PL_savestack);
		531	#if PERL_VERSION < 9
441	Safefree(PL_retstack);	532	Safefree (PL_retstack);
		533	#endif
442	}	534	}
443		535
444	STATIC void	536	static void
445	transfer(pTHX_ struct coro prev, struct coro next, int flags)	537	setup_coro (struct coro *coro)
446	{	538	{
		539	/*
		540	* emulate part of the perl startup here.
		541	*/
		542	dTHX;
447	dSP;	543	dSP;
		544	UNOP myop;
		545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
		546
		547	coro_init_stacks (aTHX);
		548	/PL_curcop = 0;/
		549	/PL_in_eval = PL_in_eval;/ /* inherit */
		550	SvREFCNT_dec (GvAV (PL_defgv));
		551	GvAV (PL_defgv) = coro->args; coro->args = 0;
		552
		553	SPAGAIN;
		554
		555	Zero (&myop, 1, UNOP);
		556	myop.op_next = Nullop;
		557	myop.op_flags = OPf_WANT_VOID;
		558
		559	PL_op = (OP *)&myop;
		560
		561	PUSHMARK(SP);
		562	XPUSHs (sub_init);
		563	PUTBACK;
		564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		565	SPAGAIN;
		566
		567	ENTER; /* necessary e.g. for dounwind */
		568	}
		569
		570	static void
		571	transfer_tail ()
		572	{
		573	if (coro_mortal)
		574	{
		575	SvREFCNT_dec (coro_mortal);
		576	coro_mortal = 0;
		577	}
		578
		579	UNLOCK;
		580	}
		581
		582	static void
		583	coro_run (void *arg)
		584	{
		585	/*
		586	* this is a _very_ stripped down perl interpreter ;)
		587	*/
		588	dTHX;
		589
		590	transfer_tail ();
		591
		592	PL_top_env = &PL_start_env;
		593	PL_restartop = PL_op->op_next;
		594	/* somebody will hit me for both perl_run and PL_restart_top */
		595	perl_run (aTHX_ PERL_GET_CONTEXT);
		596
		597	abort ();
		598	}
		599
		600	static coro_stack *
		601	stack_new ()
		602	{
		603	coro_stack *stack;
		604
		605	New (0, stack, 1, coro_stack);
		606
		607	#if HAVE_MMAP
		608
		609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
		610	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		611
		612	if (stack->sptr == (void *)-1)
		613	{
		614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");
		615	_exit (EXIT_FAILURE);
		616	}
		617
		618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		619
		620	#else
		621
		622	stack->ssize = STACKSIZE * (long)sizeof (long);
		623	New (0, stack->sptr, STACKSIZE, long);
		624
		625	if (!stack->sptr)
		626	{
		627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");
		628	_exit (EXIT_FAILURE);
		629	}
		630
		631	#endif
		632
		633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);
		634
		635	return stack;
		636	}
		637
		638	static void
		639	stack_free (coro_stack *stack)
		640	{
		641	if (!stack \|\| stack == main_stack)
		642	return;
		643
		644	#if HAVE_MMAP
		645	munmap (stack->sptr, stack->ssize);
		646	#else
		647	Safefree (stack->sptr);
		648	#endif
		649
		650	Safefree (stack);
		651	}
		652
		653	static coro_stack *stack_first;
		654
		655	static void
		656	stack_get (struct coro *coro)
		657	{
		658	if (stack_first)
		659	{
		660	coro->stack = stack_first;
		661	stack_first = stack_first->next;
		662	}
		663	else
		664	coro->stack = stack_new ();
		665	}
		666
		667	static void
		668	stack_put (coro_stack *stack)
		669	{
		670	stack->next = stack_first;
		671	stack_first = stack;
		672	}
		673
		674	/* never call directly, always through the coro_state_transfer global variable */
		675	static void
		676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
		677	{
		678	dSTACKLEVEL;
		679
		680	/* sometimes transfer is only called to set idle_sp */
		681	if (!prev->stack->idle_sp)
		682	prev->stack->idle_sp = stacklevel;
		683
		684	LOCK;
448		685
449	if (prev != next)	686	if (prev != next)
450	{	687	{
451	/*	688	coro_stack *prev_stack = prev->stack;
452	* this could be done in newprocess which would lead to	689
453	* extremely elegant and fast (just SAVE/LOAD)	690	/* possibly "free" the stack */
454	* code here, but lazy allocation of stacks has also	691	if (prev_stack->idle_sp == stacklevel)
455	* some virtues and the overhead of the if() is nil.
456	*/	692	{
		693	stack_put (prev_stack);
		694	prev->stack = 0;
		695	}
		696
457	if (next->mainstack)	697	if (!next->mainstack)
		698	{
		699	/* first get rid of the old state */
		700	SAVE (prev, -1);
		701	/* setup coroutine call */
		702	setup_coro (next);
		703	next->stack = 0;
		704	}
		705	else
458	{	706	{
459	SAVE (prev, flags);	707	SAVE (prev, flags);
460	LOAD (next);	708	LOAD (next);
461	/* mark this state as in-use */
462	next->mainstack = 0;
463	next->tmps_ix = -2;
464	}	709	}
465	else if (next->tmps_ix == -2)
466	{
467	croak ("tried to transfer to running coroutine");
468	}
469	else
470	{
471	/*
472	* emulate part of the perl startup here.
473	*/
474	UNOP myop;
475		710
476	SAVE (prev, -1); /* first get rid of the old state */	711	if (!next->stack)
		712	stack_get (next);
477		713
478	init_stacks (); /* from perl.c */	714	if (prev_stack != next->stack)
479	SPAGAIN;	715	coro_transfer (&prev_stack->cctx, &next->stack->cctx);
480
481	PL_op = (OP *)&myop;
482	/PL_curcop = 0;/
483	SvREFCNT_dec (GvAV (PL_defgv));
484	GvAV (PL_defgv) = next->args;
485
486	Zero(&myop, 1, UNOP);
487	myop.op_next = Nullop;
488	myop.op_flags = OPf_WANT_VOID;
489
490	PUSHMARK(SP);
491	XPUSHs ((SV*)get_cv(SUB_INIT, TRUE));
492	/*
493	* the next line is slightly wrong, as PL_op->op_next
494	* is actually being executed so we skip the first op.
495	* that doesn't matter, though, since it is only
496	* pp_nextstate and we never return...
497	* ah yes, and I don't care anyways ;)
498	*/
499	PUTBACK;
500	PL_op = pp_entersub(aTHX);
501	SPAGAIN;
502
503	ENTER; /* necessary e.g. for dounwind */
504	}
505	}	716	}
		717
		718	transfer_tail ();
		719	}
		720
		721	/* use this function pointer to call the above function */
		722	/* this is done to increase chances of the compiler not inlining the call */
		723	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		724
		725	static void
		726	coro_state_destroy (struct coro *coro)
		727	{
		728	if (coro->refcnt--)
		729	return;
		730
		731	if (coro->mainstack && coro->mainstack != main_mainstack)
		732	{
		733	struct coro temp;
		734
		735	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		736	LOAD (aTHX_ coro);
		737
		738	destroy_stacks (aTHX);
		739
		740	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		741
		742	coro->mainstack = 0;
		743	}
		744
		745	stack_free (coro->stack);
		746	SvREFCNT_dec (coro->args);
		747	Safefree (coro);
		748	}
		749
		750	static int
		751	coro_state_clear (SV sv, MAGIC mg)
		752	{
		753	struct coro coro = (struct coro )mg->mg_ptr;
		754	mg->mg_ptr = 0;
		755
		756	coro_state_destroy (coro);
		757
		758	return 0;
		759	}
		760
		761	static int
		762	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		763	{
		764	struct coro coro = (struct coro )mg->mg_ptr;
		765
		766	++coro->refcnt;
		767
		768	return 0;
		769	}
		770
		771	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		772
		773	static struct coro *
		774	SvSTATE (SV *coro)
		775	{
		776	HV *stash;
		777	MAGIC *mg;
		778
		779	if (SvROK (coro))
		780	coro = SvRV (coro);
		781
		782	stash = SvSTASH (coro);
		783	if (stash != coro_stash && stash != coro_state_stash)
		784	{
		785	/* very slow, but rare, check */
		786	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		787	croak ("Coro::State object required");
		788	}
		789
		790	mg = SvMAGIC (coro);
		791	assert (mg->mg_type == PERL_MAGIC_ext);
		792	return (struct coro *)mg->mg_ptr;
		793	}
		794
		795	static void
		796	api_transfer (pTHX_ SV prev, SV next, int flags)
		797	{
		798	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		799	}
		800
		801	/ Coro ******************************************************************/
		802
		803	#define PRIO_MAX 3
		804	#define PRIO_HIGH 1
		805	#define PRIO_NORMAL 0
		806	#define PRIO_LOW -1
		807	#define PRIO_IDLE -3
		808	#define PRIO_MIN -4
		809
		810	/* for Coro.pm */
		811	static GV coro_current, coro_idle;
		812	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		813	static int coro_nready;
		814
		815	static void
		816	coro_enq (pTHX_ SV *sv)
		817	{
		818	int prio;
		819
		820	if (SvTYPE (sv) != SVt_PVHV)
		821	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		822
		823	prio = SvSTATE (sv)->prio;
		824
		825	av_push (coro_ready [prio - PRIO_MIN], sv);
		826	coro_nready++;
		827	}
		828
		829	static SV *
		830	coro_deq (pTHX_ int min_prio)
		831	{
		832	int prio = PRIO_MAX - PRIO_MIN;
		833
		834	min_prio -= PRIO_MIN;
		835	if (min_prio < 0)
		836	min_prio = 0;
		837
		838	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		839	if (AvFILLp (coro_ready [prio]) >= 0)
		840	{
		841	coro_nready--;
		842	return av_shift (coro_ready [prio]);
		843	}
		844
		845	return 0;
		846	}
		847
		848	static void
		849	api_ready (SV *coro)
		850	{
		851	dTHX;
		852
		853	if (SvROK (coro))
		854	coro = SvRV (coro);
		855
		856	LOCK;
		857	coro_enq (aTHX_ SvREFCNT_inc (coro));
		858	UNLOCK;
		859	}
		860
		861	static void
		862	api_schedule (void)
		863	{
		864	dTHX;
		865
		866	SV prev, next;
		867	SV *current = GvSV (coro_current);
		868
		869	for (;;)
		870	{
		871	LOCK;
		872
		873	next = coro_deq (aTHX_ PRIO_MIN);
		874
		875	if (next)
		876	break;
		877
		878	UNLOCK;
		879
		880	{
		881	dSP;
		882
		883	ENTER;
		884	SAVETMPS;
		885
		886	PUSHMARK (SP);
		887	PUTBACK;
		888	call_sv (GvSV (coro_idle), G_DISCARD);
		889
		890	FREETMPS;
		891	LEAVE;
		892	}
		893	}
		894
		895	prev = SvRV (current);
		896	SvRV (current) = next;
		897
		898	/* free this only after the transfer */
		899	coro_mortal = prev;
		900
		901	UNLOCK;
		902
		903	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
		904	}
		905
		906	static int coro_cede_self;
		907
		908	static void
		909	api_cede (void)
		910	{
		911	dTHX;
		912	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
		913
		914	LOCK;
		915
		916	if (coro_cede_self)
		917	{
		918	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
		919	av_unshift (runqueue, 1);
		920	av_store (runqueue, 0, current);
		921	coro_nready++;
		922	coro_cede_self = 0;
		923	}
		924	else
		925	coro_enq (aTHX_ current);
		926
		927	UNLOCK;
		928
		929	api_schedule ();
506	}	930	}
507		931
508	MODULE = Coro::State PACKAGE = Coro::State	932	MODULE = Coro::State PACKAGE = Coro::State
509		933
510	PROTOTYPES: ENABLE	934	PROTOTYPES: DISABLE
511		935
512	BOOT:	936	BOOT:
513	{ /* {} necessary for stoopid perl-5.6.x */	937	{
		938	#ifdef USE_ITHREADS
		939	MUTEX_INIT (&coro_mutex);
		940	#endif
		941	BOOT_PAGESIZE;
		942
514	HV * stash = gv_stashpvn("Coro::State", 10, TRUE);	943	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
515		944
516	newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV));	945	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
517	newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV));	946	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
518	newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV));	947	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
519		948
520	if (!padlist_cache)	949	main_mainstack = PL_mainstack;
521	padlist_cache = newHV ();
522	}
523		950
524	Coro::State	951	coroapi.ver = CORO_API_VERSION;
525	_newprocess(args)	952	coroapi.transfer = api_transfer;
526	SV * args	953
527	PROTOTYPE: $	954	Newz (0, main_stack, 1, coro_stack);
		955	main_stack->idle_sp = (void *)-1;
		956
		957	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		958	}
		959
		960	SV *
		961	new (char *klass, ...)
528	CODE:	962	CODE:
529	Coro__State coro;	963	{
		964	struct coro *coro;
		965	HV *hv;
		966	int i;
530		967
531	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
532	croak ("Coro::State::_newprocess expects an arrayref");
533
534	New (0, coro, 1, struct coro);	968	Newz (0, coro, 1, struct coro);
		969	coro->args = newAV ();
535		970
		971	hv = newHV ();
		972	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		973	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		974
		975	av_push (coro->args, newSVsv (RETVAL));
		976	for (i = 1; i < items; i++)
		977	av_push (coro->args, newSVsv (ST (i)));
		978
		979	coro->stack = main_stack;
536	coro->mainstack = 0; /* actual work is done inside transfer */	980	/coro->mainstack = 0; //actual work is done inside transfer /
537	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	981	/coro->stack = 0;/
538		982	}
539	RETVAL = coro;
540	OUTPUT:	983	OUTPUT:
541	RETVAL	984	RETVAL
542		985
543	void	986	void
544	transfer(prev, next, flags = SAVE_DEFAV)	987	transfer (prev, next, flags)
545	Coro::State_or_hashref prev	988	SV *prev
546	Coro::State_or_hashref next	989	SV *next
547	int flags	990	int flags
548	PROTOTYPE: @
549	CODE:	991	CODE:
		992	PUTBACK;
		993	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		994	SPAGAIN;
550		995
551	transfer (aTHX_ prev, next, flags);	996	int
		997	prio (Coro::State coro, int newprio = 0)
		998	ALIAS:
		999	nice = 1
		1000	CODE:
		1001	{
		1002	RETVAL = coro->prio;
		1003
		1004	if (items > 1)
		1005	{
		1006	if (ix)
		1007	newprio += coro->prio;
		1008
		1009	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1010	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1011
		1012	coro->prio = newprio;
		1013	}
		1014	}
552		1015
553	void	1016	void
554	DESTROY(coro)	1017	_clear_idle_sp (Coro::State self)
555	Coro::State coro	1018	CODE:
556	CODE:	1019	self->stack->idle_sp = 0;
557
558	if (coro->mainstack)
559	{
560	struct coro temp;
561
562	SAVE(aTHX_ (&temp), SAVE_ALL);
563	LOAD(aTHX_ coro);
564
565	destroy_stacks ();
566
567	LOAD((&temp)); /* this will get rid of defsv etc.. */
568	}
569
570	Safefree (coro);
571		1020
572	void	1021	void
573	flush()	1022	_clone_state_from (SV dst, SV src)
574	CODE:	1023	CODE:
575	#ifdef MAY_FLUSH	1024	{
576	flush_padlist_cache ();	1025	struct coro *coro_src = SvSTATE (src);
577	#endif	1026
		1027	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
		1028
		1029	++coro_src->refcnt;
		1030	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
		1031	}
		1032
		1033	void
		1034	_exit (code)
		1035	int code
		1036	PROTOTYPE: $
		1037	CODE:
		1038	_exit (code);
578		1039
579	MODULE = Coro::State PACKAGE = Coro::Cont	1040	MODULE = Coro::State PACKAGE = Coro::Cont
580		1041
581	# this is dirty and should be in it's own .xs
582
583	void	1042	void
584	result(...)	1043	yield (...)
585	PROTOTYPE: @	1044	PROTOTYPE: @
586	CODE:	1045	CODE:
587	static SV *returnstk;	1046	{
		1047	SV *yieldstack;
588	SV *sv;	1048	SV *sv;
589	AV *defav = GvAV (PL_defgv);	1049	AV *defav = GvAV (PL_defgv);
590	struct coro prev, next;	1050	struct coro prev, next;
591		1051
592	if (!returnstk)	1052	yieldstack = *hv_fetch (
593	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1053	(HV *)SvRV (GvSV (coro_current)),
		1054	"yieldstack", sizeof ("yieldstack") - 1,
		1055	0
		1056	);
594		1057
595	/* set up @_ */	1058	/* set up @_ -- ugly */
596	av_clear (defav);	1059	av_clear (defav);
597	av_fill (defav, items - 1);	1060	av_fill (defav, items - 1);
598	while (items--)	1061	while (items--)
599	av_store (defav, items, SvREFCNT_inc (ST(items)));	1062	av_store (defav, items, SvREFCNT_inc (ST(items)));
600		1063
601	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
602	sv = av_pop ((AV *)SvRV (returnstk));	1064	sv = av_pop ((AV *)SvRV (yieldstack));
603	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1065	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
604	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1066	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
605	SvREFCNT_dec (sv);	1067	SvREFCNT_dec (sv);
		1068
606	transfer(prev, next, 0);	1069	coro_state_transfer (aTHX_ prev, next, 0);
		1070	}
607		1071
		1072	MODULE = Coro::State PACKAGE = Coro
		1073
		1074	BOOT:
		1075	{
		1076	int i;
		1077
		1078	coro_stash = gv_stashpv ("Coro", TRUE);
		1079
		1080	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1081	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1082	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1083	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1084	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1085	newCONSTSUB (coro_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	void
		1109	ready (SV *self)
		1110	PROTOTYPE: $
		1111	CODE:
		1112	api_ready (self);
		1113
		1114	int
		1115	nready (...)
		1116	PROTOTYPE:
		1117	CODE:
		1118	RETVAL = coro_nready;
		1119	OUTPUT:
		1120	RETVAL
		1121
		1122	void
		1123	schedule (...)
		1124	PROTOTYPE:
		1125	CODE:
		1126	api_schedule ();
		1127
		1128	void
		1129	_set_cede_self ()
		1130	CODE:
		1131	coro_cede_self = 1;
		1132
		1133	void
		1134	cede (...)
		1135	PROTOTYPE:
		1136	CODE:
		1137	api_cede ();
		1138
		1139	MODULE = Coro::State PACKAGE = Coro::AIO
		1140
		1141	SV *
		1142	_get_state ()
		1143	CODE:
		1144	{
		1145	struct {
		1146	int errorno;
		1147	int laststype;
		1148	int laststatval;
		1149	Stat_t statcache;
		1150	} data;
		1151
		1152	data.errorno = errno;
		1153	data.laststype = PL_laststype;
		1154	data.laststatval = PL_laststatval;
		1155	data.statcache = PL_statcache;
		1156
		1157	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1158	}
		1159	OUTPUT:
		1160	RETVAL
		1161
		1162	void
		1163	_set_state (char *data_)
		1164	PROTOTYPE: $
		1165	CODE:
		1166	{
		1167	struct {
		1168	int errorno;
		1169	int laststype;
		1170	int laststatval;
		1171	Stat_t statcache;
		1172	} data = (void )data_;
		1173
		1174	errno = data->errorno;
		1175	PL_laststype = data->laststype;
		1176	PL_laststatval = data->laststatval;
		1177	PL_statcache = data->statcache;
		1178	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.9 by root, Sat Jul 21 02:49:09 2001 UTC vs. Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.9 by root, Sat Jul 21 02:49:09 2001 UTC vs.
Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC