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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.8 by root, Thu Jul 19 04:13:22 2001 UTC vs.
Revision 1.85 by root, Fri Nov 24 00:32:04 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	#define UCORO_STATE "_coro_state"
		64
		65	/* The next macro should declare a variable stacklevel that contains and approximation
		66	* to the current C stack pointer. Its property is that it changes with each call
		67	* and should be unique. */
		68	#define dSTACKLEVEL void *stacklevel = &stacklevel
		69
		70	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		71
		72	#define labs(l) ((l) >= 0 ? (l) : -(l))
		73
		74	#include "CoroAPI.h"
		75
		76	#ifdef USE_ITHREADS
		77	static perl_mutex coro_mutex;
		78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
7	#else	80	#else
8	# define CHK(x) if (!(x)) croak("FATAL, CHK: " #x)	81	# define LOCK (void)0
		82	# define UNLOCK (void)0
9	#endif	83	#endif
10		84
11	#define MAY_FLUSH /* increases codesize */	85	static struct CoroAPI coroapi;
		86	static AV main_mainstack; / used to differentiate between $main and others */
		87	static HV *coro_state_stash;
		88	static SV *ucoro_state_sv;
		89	static U32 ucoro_state_hash;
		90	static SV coro_mortal; / will be freed after next transfer */
12		91
13	#define SUB_INIT "Coro::State::_newcoro"	92	/* this is actually not only the c stack but also c registers etc... */
		93	typedef struct {
		94	int refcnt; /* pointer reference counter */
		95	int usecnt; /* shared by how many coroutines */
		96	int gencnt; /* generation counter */
14		97
15	#define SAVE_DEFAV 0x00000001	98	coro_context cctx;
16	#define SAVE_DEFSV 0x00000002
17	#define SAVE_ERRSV 0x00000004
18		99
19	#define SAVE_ALL -1	100	void *sptr;
		101	long ssize; /* positive == mmap, otherwise malloc */
		102	} coro_stack;
20		103
21	struct coro {	104	struct coro {
		105	/* the optional C context */
		106	coro_stack *stack;
		107	void *cursp;
		108	int gencnt;
		109
22	/* optionally saved, might be zero */	110	/* optionally saved, might be zero */
23	AV *defav;	111	AV *defav;
24	SV *defsv;	112	SV *defsv;
25	SV *errsv;	113	SV *errsv;
26		114
27	/* saved global state not related to stacks */	115	/* saved global state not related to stacks */
28	U8 dowarn;	116	U8 dowarn;
		117	I32 in_eval;
29		118
30	/* the stacks and related info (callchain etc..) */	119	/* the stacks and related info (callchain etc..) */
31	PERL_SI *curstackinfo;	120	PERL_SI *curstackinfo;
32	AV *curstack;	121	AV *curstack;
33	AV *mainstack;	122	AV *mainstack;
34	SV **stack_sp;	123	SV **stack_sp;
35	OP *op;	124	OP *op;
36	SV **curpad;	125	SV **curpad;
		126	AV *comppad;
		127	CV *compcv;
37	SV **stack_base;	128	SV **stack_base;
38	SV **stack_max;	129	SV **stack_max;
39	SV **tmps_stack;	130	SV **tmps_stack;
40	I32 tmps_floor;	131	I32 tmps_floor;
41	I32 tmps_ix;	132	I32 tmps_ix;
50	I32 savestack_ix;	141	I32 savestack_ix;
51	I32 savestack_max;	142	I32 savestack_max;
52	OP **retstack;	143	OP **retstack;
53	I32 retstack_ix;	144	I32 retstack_ix;
54	I32 retstack_max;	145	I32 retstack_max;
		146	PMOP *curpm;
55	COP *curcop;	147	COP *curcop;
		148	JMPENV *top_env;
56		149
57	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
58	AV *args;	151	AV *args;
59	};	152	};
60		153
61	typedef struct coro *Coro__State;	154	typedef struct coro *Coro__State;
62	typedef struct coro *Coro__State_or_hashref;	155	typedef struct coro *Coro__State_or_hashref;
63		156
64	static HV *padlist_cache;	157	static AV *
65		158	coro_clone_padlist (pTHX_ CV *cv)
66	/* mostly copied from op.c:cv_clone2 */
67	STATIC AV *
68	clone_padlist (AV *protopadlist)
69	{	159	{
70	AV *av;	160	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;	161	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		162
89	newpadlist = newAV ();	163	newpadlist = newAV ();
90	AvREAL_off (newpadlist);	164	AvREAL_off (newpadlist);
91	av_store (newpadlist, 0, (SV *) newpad_name);	165	#if PERL_VERSION < 9
		166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		167	#else
		168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		169	#endif
		170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		171	--AvFILLp (padlist);
		172
		173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
92	av_store (newpadlist, 1, (SV *) newpad);	174	av_store (newpadlist, 1, (SV *)newpad);
93		175
94	av = newAV (); /* will be @_ */	176	return newpadlist;
95	av_extend (av, 0);	177	}
96	av_store (newpad, 0, (SV *) av);
97	AvFLAGS (av) = AVf_REIFY;
98		178
99	for (ix = fpad; ix > 0; ix--)	179	static void
		180	free_padlist (pTHX_ AV *padlist)
		181	{
		182	/* may be during global destruction */
		183	if (SvREFCNT (padlist))
100	{	184	{
101	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	185	I32 i = AvFILLp (padlist);
102	if (namesv && namesv != &PL_sv_undef)	186	while (i >= 0)
103	{	187	{
104	char name = SvPVX (namesv); / XXX */	188	SV **svp = av_fetch (padlist, i--, FALSE);
105	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	189	if (svp)
106	{ /* lexical from outside? */
107	npad[ix] = SvREFCNT_inc (ppad[ix]);
108	}	190	{
109	else
110	{ /* our own lexical */
111	SV *sv;	191	SV *sv;
112	if (*name == '&')	192	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
113	sv = SvREFCNT_inc (ppad[ix]);	193	SvREFCNT_dec (sv);
114	else if (*name == '@')	194
115	sv = (SV *) newAV ();	195	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	}	196	}
124	}	197	}
125	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	198
126	{	199	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	}	200	}
		201	}
136		202
137	#if 0 /* return -ENOTUNDERSTOOD */	203	static int
138	/* Now that vars are all in place, clone nested closures. */	204	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		205	{
		206	AV *padlist;
		207	AV av = (AV )mg->mg_obj;
139		208
140	for (ix = fpad; ix > 0; ix--) {	209	/* casting is fun. */
141	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
142	if (namesv	211	free_padlist (aTHX_ padlist);
143	&& namesv != &PL_sv_undef	212
144	&& !(SvFLAGS(namesv) & SVf_FAKE)	213	SvREFCNT_dec (av);
145	&& *SvPVX(namesv) == '&'	214
146	&& CvCLONE(ppad[ix]))	215	return 0;
147	{	216	}
148	CV kid = cv_clone((CV)ppad[ix]);	217
149	SvREFCNT_dec(ppad[ix]);	218	#define PERL_MAGIC_coro PERL_MAGIC_ext
150	CvCLONE_on(kid);	219
151	SvPADMY_on(kid);	220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
152	npad[ix] = (SV*)kid;	221
153	}	222	/* the next two functions merely cache the padlists */
		223	static void
		224	get_padlist (pTHX_ CV *cv)
		225	{
		226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		227
		228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
		229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
		230	else
		231	{
		232	#if 0
		233	/* this should work - but it doesn't :( */
		234	CV *cp = Perl_cv_clone (aTHX_ cv);
		235	CvPADLIST (cv) = CvPADLIST (cp);
		236	CvPADLIST (cp) = 0;
		237	SvREFCNT_dec (cp);
		238	#else
		239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		240	#endif
		241	}
		242	}
		243
		244	static void
		245	put_padlist (pTHX_ CV *cv)
		246	{
		247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		248
		249	if (!mg)
		250	{
		251	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		252	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		253	mg->mg_virtual = &vtbl_coro;
		254	mg->mg_obj = (SV *)newAV ();
154	}	255	}
155	#endif
156		256
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));	257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
205	}	258	}
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		259
233	#define SB do {	260	#define SB do {
234	#define SE } while (0)	261	#define SE } while (0)
235		262
236	#define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE	263	#define LOAD(state) load_state(aTHX_ (state));
237	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE	264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
238		265
239	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	266	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
240		267
241	static void	268	static void
242	load_state(pTHX_ Coro__State c)	269	load_state(pTHX_ Coro__State c)
243	{	270	{
244	PL_dowarn = c->dowarn;	271	PL_dowarn = c->dowarn;
		272	PL_in_eval = c->in_eval;
245		273
246	PL_curstackinfo = c->curstackinfo;	274	PL_curstackinfo = c->curstackinfo;
247	PL_curstack = c->curstack;	275	PL_curstack = c->curstack;
248	PL_mainstack = c->mainstack;	276	PL_mainstack = c->mainstack;
249	PL_stack_sp = c->stack_sp;	277	PL_stack_sp = c->stack_sp;
250	PL_op = c->op;	278	PL_op = c->op;
251	PL_curpad = c->curpad;	279	PL_curpad = c->curpad;
		280	PL_comppad = c->comppad;
		281	PL_compcv = c->compcv;
252	PL_stack_base = c->stack_base;	282	PL_stack_base = c->stack_base;
253	PL_stack_max = c->stack_max;	283	PL_stack_max = c->stack_max;
254	PL_tmps_stack = c->tmps_stack;	284	PL_tmps_stack = c->tmps_stack;
255	PL_tmps_floor = c->tmps_floor;	285	PL_tmps_floor = c->tmps_floor;
256	PL_tmps_ix = c->tmps_ix;	286	PL_tmps_ix = c->tmps_ix;
…		…
262	PL_scopestack_ix = c->scopestack_ix;	292	PL_scopestack_ix = c->scopestack_ix;
263	PL_scopestack_max = c->scopestack_max;	293	PL_scopestack_max = c->scopestack_max;
264	PL_savestack = c->savestack;	294	PL_savestack = c->savestack;
265	PL_savestack_ix = c->savestack_ix;	295	PL_savestack_ix = c->savestack_ix;
266	PL_savestack_max = c->savestack_max;	296	PL_savestack_max = c->savestack_max;
		297	#if PERL_VERSION < 9
267	PL_retstack = c->retstack;	298	PL_retstack = c->retstack;
268	PL_retstack_ix = c->retstack_ix;	299	PL_retstack_ix = c->retstack_ix;
269	PL_retstack_max = c->retstack_max;	300	PL_retstack_max = c->retstack_max;
		301	#endif
		302	PL_curpm = c->curpm;
270	PL_curcop = c->curcop;	303	PL_curcop = c->curcop;
		304	PL_top_env = c->top_env;
271		305
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
275		309
…		…
282	{	316	{
283	AV padlist = (AV )POPs;	317	AV padlist = (AV )POPs;
284		318
285	if (padlist)	319	if (padlist)
286	{	320	{
287	put_padlist (cv); /* mark this padlist as available */	321	put_padlist (aTHX_ cv); /* mark this padlist as available */
288	CvPADLIST(cv) = padlist;	322	CvPADLIST(cv) = padlist;
289	#ifdef USE_THREADS
290	/CvOWNER(cv) = (struct perl_thread )POPs;*/
291	#endif
292	}	323	}
293		324
294	++CvDEPTH(cv);	325	++CvDEPTH(cv);
295	}	326	}
296		327
…		…
302	save_state(pTHX_ Coro__State c, int flags)	333	save_state(pTHX_ Coro__State c, int flags)
303	{	334	{
304	{	335	{
305	dSP;	336	dSP;
306	I32 cxix = cxstack_ix;	337	I32 cxix = cxstack_ix;
		338	PERL_CONTEXT *ccstk = cxstack;
307	PERL_SI *top_si = PL_curstackinfo;	339	PERL_SI *top_si = PL_curstackinfo;
308	PERL_CONTEXT *ccstk = cxstack;
309		340
310	/*	341	/*
311	* the worst thing you can imagine happens first - we have to save	342	* the worst thing you can imagine happens first - we have to save
312	* (and reinitialize) all cv's in the whole callchain :(	343	* (and reinitialize) all cv's in the whole callchain :(
313	*/	344	*/
314		345
315	PUSHs (Nullsv);	346	PUSHs (Nullsv);
316	/* this loop was inspired by pp_caller */	347	/* this loop was inspired by pp_caller */
317	for (;;)	348	for (;;)
318	{	349	{
319	do	350	while (cxix >= 0)
320	{	351	{
321	PERL_CONTEXT *cx = &ccstk[cxix--];	352	PERL_CONTEXT *cx = &ccstk[cxix--];
322		353
323	if (CxTYPE(cx) == CXt_SUB)	354	if (CxTYPE(cx) == CXt_SUB)
324	{	355	{
325	CV *cv = cx->blk_sub.cv;	356	CV *cv = cx->blk_sub.cv;
326	if (CvDEPTH(cv))	357	if (CvDEPTH(cv))
327	{	358	{
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);	359	EXTEND (SP, CvDEPTH(cv)*2);
334		360
335	while (--CvDEPTH(cv))	361	while (--CvDEPTH(cv))
336	{	362	{
337	/* this tells the restore code to increment CvDEPTH */	363	/* this tells the restore code to increment CvDEPTH */
…		…
340	}	366	}
341		367
342	PUSHs ((SV *)CvPADLIST(cv));	368	PUSHs ((SV *)CvPADLIST(cv));
343	PUSHs ((SV *)cv);	369	PUSHs ((SV *)cv);
344		370
345	get_padlist (cv); /* this is a monster */	371	get_padlist (aTHX_ cv);
346	}	372	}
347	}	373	}
		374	#ifdef CXt_FORMAT
348	else if (CxTYPE(cx) == CXt_FORMAT)	375	else if (CxTYPE(cx) == CXt_FORMAT)
349	{	376	{
350	/* I never used formats, so how should I know how these are implemented? */	377	/* I never used formats, so how should I know how these are implemented? */
351	/* my bold guess is as a simple, plain sub... */	378	/* my bold guess is as a simple, plain sub... */
352	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
353	}	380	}
		381	#endif
354	}	382	}
355	while (cxix >= 0);
356		383
357	if (top_si->si_type == PERLSI_MAIN)	384	if (top_si->si_type == PERLSI_MAIN)
358	break;	385	break;
359		386
360	top_si = top_si->si_prev;	387	top_si = top_si->si_prev;
…		…
363	}	390	}
364		391
365	PUTBACK;	392	PUTBACK;
366	}	393	}
367		394
368	c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
369	c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
370	c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
371		398
372	c->dowarn = PL_dowarn;	399	c->dowarn = PL_dowarn;
		400	c->in_eval = PL_in_eval;
373		401
374	c->curstackinfo = PL_curstackinfo;	402	c->curstackinfo = PL_curstackinfo;
375	c->curstack = PL_curstack;	403	c->curstack = PL_curstack;
376	c->mainstack = PL_mainstack;	404	c->mainstack = PL_mainstack;
377	c->stack_sp = PL_stack_sp;	405	c->stack_sp = PL_stack_sp;
378	c->op = PL_op;	406	c->op = PL_op;
379	c->curpad = PL_curpad;	407	c->curpad = PL_curpad;
		408	c->comppad = PL_comppad;
		409	c->compcv = PL_compcv;
380	c->stack_base = PL_stack_base;	410	c->stack_base = PL_stack_base;
381	c->stack_max = PL_stack_max;	411	c->stack_max = PL_stack_max;
382	c->tmps_stack = PL_tmps_stack;	412	c->tmps_stack = PL_tmps_stack;
383	c->tmps_floor = PL_tmps_floor;	413	c->tmps_floor = PL_tmps_floor;
384	c->tmps_ix = PL_tmps_ix;	414	c->tmps_ix = PL_tmps_ix;
…		…
390	c->scopestack_ix = PL_scopestack_ix;	420	c->scopestack_ix = PL_scopestack_ix;
391	c->scopestack_max = PL_scopestack_max;	421	c->scopestack_max = PL_scopestack_max;
392	c->savestack = PL_savestack;	422	c->savestack = PL_savestack;
393	c->savestack_ix = PL_savestack_ix;	423	c->savestack_ix = PL_savestack_ix;
394	c->savestack_max = PL_savestack_max;	424	c->savestack_max = PL_savestack_max;
		425	#if PERL_VERSION < 9
395	c->retstack = PL_retstack;	426	c->retstack = PL_retstack;
396	c->retstack_ix = PL_retstack_ix;	427	c->retstack_ix = PL_retstack_ix;
397	c->retstack_max = PL_retstack_max;	428	c->retstack_max = PL_retstack_max;
		429	#endif
		430	c->curpm = PL_curpm;
398	c->curcop = PL_curcop;	431	c->curcop = PL_curcop;
		432	c->top_env = PL_top_env;
		433	}
		434
		435	/*
		436	* allocate various perl stacks. This is an exact copy
		437	* of perl.c:init_stacks, except that it uses less memory
		438	* on the (sometimes correct) assumption that coroutines do
		439	* not usually need a lot of stackspace.
		440	*/
		441	static void
		442	coro_init_stacks (pTHX)
		443	{
		444	LOCK;
		445
		446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
		447	PL_curstackinfo->si_type = PERLSI_MAIN;
		448	PL_curstack = PL_curstackinfo->si_stack;
		449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
		450
		451	PL_stack_base = AvARRAY(PL_curstack);
		452	PL_stack_sp = PL_stack_base;
		453	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
		454
		455	New(50,PL_tmps_stack,96,SV*);
		456	PL_tmps_floor = -1;
		457	PL_tmps_ix = -1;
		458	PL_tmps_max = 96;
		459
		460	New(54,PL_markstack,16,I32);
		461	PL_markstack_ptr = PL_markstack;
		462	PL_markstack_max = PL_markstack + 16;
		463
		464	#ifdef SET_MARK_OFFSET
		465	SET_MARK_OFFSET;
		466	#endif
		467
		468	New(54,PL_scopestack,16,I32);
		469	PL_scopestack_ix = 0;
		470	PL_scopestack_max = 16;
		471
		472	New(54,PL_savestack,96,ANY);
		473	PL_savestack_ix = 0;
		474	PL_savestack_max = 96;
		475
		476	#if PERL_VERSION < 9
		477	New(54,PL_retstack,8,OP*);
		478	PL_retstack_ix = 0;
		479	PL_retstack_max = 8;
		480	#endif
		481
		482	UNLOCK;
399	}	483	}
400		484
401	/*	485	/*
402	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
403	* still there is a memleak of 128 bytes...
404	*/	487	*/
405	STATIC void	488	static void
406	destroy_stacks(pTHX)	489	destroy_stacks(pTHX)
407	{	490	{
		491	if (!IN_DESTRUCT)
		492	{
408	/* is this ugly, I ask? */	493	/* is this ugly, I ask? */
409	while (PL_scopestack_ix)	494	LEAVE_SCOPE (0);
410	LEAVE;
411		495
412	/* sure it is, but more important: is it correct?? :/ */	496	/* 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;	497	FREETMPS;
		498
		499	/POPSTACK_TO (PL_mainstack);//D//use/
		500	}
415		501
416	while (PL_curstackinfo->si_next)	502	while (PL_curstackinfo->si_next)
417	PL_curstackinfo = PL_curstackinfo->si_next;	503	PL_curstackinfo = PL_curstackinfo->si_next;
418		504
419	while (PL_curstackinfo)	505	while (PL_curstackinfo)
420	{	506	{
421	PERL_SI *p = PL_curstackinfo->si_prev;	507	PERL_SI *p = PL_curstackinfo->si_prev;
422		508
423	{	509	{ /D//remove/
424	dSP;	510	dSP;
425	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
426	PUTBACK; /* possibly superfluous */	512	PUTBACK; /* possibly superfluous */
427	}	513	}
428		514
429	dounwind(-1);	515	if (!IN_DESTRUCT)
430		516	{
		517	dounwind (-1);/D//remove/
431	SvREFCNT_dec(PL_curstackinfo->si_stack);	518	SvREFCNT_dec (PL_curstackinfo->si_stack);
		519	}
		520
432	Safefree(PL_curstackinfo->si_cxstack);	521	Safefree (PL_curstackinfo->si_cxstack);
433	Safefree(PL_curstackinfo);	522	Safefree (PL_curstackinfo);
434	PL_curstackinfo = p;	523	PL_curstackinfo = p;
435	}	524	}
436		525
437	Safefree(PL_tmps_stack);	526	Safefree (PL_tmps_stack);
438	Safefree(PL_markstack);	527	Safefree (PL_markstack);
439	Safefree(PL_scopestack);	528	Safefree (PL_scopestack);
440	Safefree(PL_savestack);	529	Safefree (PL_savestack);
		530	#if PERL_VERSION < 9
441	Safefree(PL_retstack);	531	Safefree (PL_retstack);
		532	#endif
442	}	533	}
443		534
444	STATIC void	535	static void
445	transfer(pTHX_ struct coro prev, struct coro next, int flags)	536	allocate_stack (Coro__State ctx, int alloc)
446	{	537	{
		538	coro_stack *stack;
		539
		540	New (0, stack, 1, coro_stack);
		541
		542	stack->refcnt = 1;
		543	stack->usecnt = 1;
		544	stack->gencnt = ctx->gencnt = 0;
		545
		546	if (alloc)
		547	{
		548	#if HAVE_MMAP
		549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
		550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		551	if (stack->sptr != (void *)-1)
		552	{
		553	# if STACKGUARD
		554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		555	# endif
		556	}
		557	else
		558	#endif
		559	{
		560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
		561	New (0, stack->sptr, STACKSIZE, long);
		562	}
		563	}
		564	else
		565	stack->sptr = 0;
		566
		567	ctx->stack = stack;
		568	}
		569
		570	static void
		571	deallocate_stack (Coro__State ctx)
		572	{
		573	coro_stack *stack = ctx->stack;
		574
		575	ctx->stack = 0;
		576
		577	if (stack)
		578	{
		579	if (!--stack->refcnt)
		580	{
		581	#ifdef HAVE_MMAP
		582	if (stack->ssize > 0 && stack->sptr)
		583	munmap (stack->sptr, stack->ssize);
		584	else
		585	#endif
		586	Safefree (stack->sptr);
		587
		588	Safefree (stack);
		589	}
		590	else if (ctx->gencnt == stack->gencnt)
		591	--stack->usecnt;
		592	}
		593	}
		594
		595	static void
		596	setup_coro (void *arg)
		597	{
		598	/*
		599	* emulate part of the perl startup here.
		600	*/
		601	dTHX;
447	dSP;	602	dSP;
		603	Coro__State ctx = (Coro__State)arg;
		604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
		605
		606	coro_init_stacks (aTHX);
		607	/PL_curcop = 0;/
		608	/PL_in_eval = PL_in_eval;/ /* inherit */
		609	SvREFCNT_dec (GvAV (PL_defgv));
		610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		611
		612	SPAGAIN;
		613
		614	if (ctx->stack)
		615	{
		616	ctx->cursp = 0;
		617
		618	PUSHMARK(SP);
		619	PUTBACK;
		620	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		621
		622	if (SvTRUE (ERRSV))
		623	croak (NULL);
		624	else
		625	croak ("FATAL: CCTXT coroutine returned!");
		626	}
		627	else
		628	{
		629	UNOP myop;
		630
		631	Zero(&myop, 1, UNOP);
		632	myop.op_next = Nullop;
		633	myop.op_flags = OPf_WANT_VOID;
		634
		635	PL_op = (OP *)&myop;
		636
		637	PUSHMARK(SP);
		638	XPUSHs (sub_init);
		639	/*
		640	* the next line is slightly wrong, as PL_op->op_next
		641	* is actually being executed so we skip the first op.
		642	* that doesn't matter, though, since it is only
		643	* pp_nextstate and we never return...
		644	* ah yes, and I don't care anyways ;)
		645	*/
		646	PUTBACK;
		647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		648	SPAGAIN;
		649
		650	ENTER; /* necessary e.g. for dounwind */
		651	}
		652	}
		653
		654	static void
		655	continue_coro (void *arg)
		656	{
		657	/*
		658	* this is a _very_ stripped down perl interpreter ;)
		659	*/
		660	dTHX;
		661	Coro__State ctx = (Coro__State)arg;
		662
		663	PL_top_env = &PL_start_env;
		664
		665	ctx->cursp = 0;
		666	PL_op = PL_op->op_next;
		667	CALLRUNOPS(aTHX);
		668
		669	abort ();
		670	}
		671
		672	/* never call directly, always through the coro_state_transfer global variable */
		673	static void
		674	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
		675	{
		676	dSTACKLEVEL;
448		677
449	if (prev != next)	678	if (prev != next)
450	{	679	{
451	/*	680	/* has this coro been created yet? */
452	* this could be done in newprocess which would lead to
453	* extremely elegant and fast (just SAVE/LOAD)
454	* code here, but lazy allocation of stacks has also
455	* some virtues and the overhead of the if() is nil.
456	*/
457	if (next->mainstack)	681	if (next->mainstack)
458	{	682	{
		683	LOCK;
459	SAVE (prev, flags);	684	SAVE (prev, flags);
460	LOAD (next);	685	LOAD (next);
		686	UNLOCK;
		687
461	/* mark this state as in-use */	688	/* mark this state as in-use */
462	next->mainstack = 0;	689	next->mainstack = 0;
463	next->tmps_ix = -2;	690	next->tmps_ix = -2;
		691
		692	/* stacklevel changed? if yes, grab the stack for us! */
		693	if (flags & TRANSFER_SAVE_CCTXT)
		694	{
		695	if (!prev->stack)
		696	allocate_stack (prev, 0);
		697	else if (prev->cursp != stacklevel
		698	&& prev->stack->usecnt > 1)
		699	{
		700	prev->gencnt = ++prev->stack->gencnt;
		701	prev->stack->usecnt = 1;
		702	}
		703
		704	/* has our stack been invalidated? */
		705	if (next->stack && next->stack->gencnt != next->gencnt)
		706	{
		707	deallocate_stack (next);
		708	allocate_stack (next, 1);
		709	coro_create (&(next->stack->cctx),
		710	continue_coro, (void *)next,
		711	next->stack->sptr, labs (next->stack->ssize));
		712	}
		713
		714	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		715	prev->cursp = stacklevel;
		716	/* don't add any code here */
		717	}
		718	else
		719	next->cursp = stacklevel;
464	}	720	}
465	else if (next->tmps_ix == -2)	721	else if (next->tmps_ix == -2)
466	{
467	croak ("tried to transfer to running coroutine");	722	croak ("tried to transfer to running coroutine");
468	}
469	else	723	else
470	{	724	{
471	/*	725	LOCK;
472	* emulate part of the perl startup here.
473	*/
474	UNOP myop;
475
476	SAVE (prev, -1); /* first get rid of the old state */	726	SAVE (prev, -1); /* first get rid of the old state */
		727	UNLOCK;
477		728
478	init_stacks (); /* from perl.c */	729	/* create the coroutine for the first time */
479	SPAGAIN;	730	if (flags & TRANSFER_SAVE_CCTXT)
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	*/	731	{
499	PUTBACK;	732	if (!prev->stack)
500	PL_op = pp_entersub(aTHX);	733	allocate_stack (prev, 0);
501	SPAGAIN;
502		734
503	ENTER; /* necessary e.g. for dounwind */	735	/* the new coroutine starts with start_env again */
		736	PL_top_env = &PL_start_env;
		737
		738	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
		739	{
		740	setup_coro (next);
		741	next->cursp = stacklevel;
		742
		743	prev->stack->refcnt++;
		744	prev->stack->usecnt++;
		745	next->stack = prev->stack;
		746	next->gencnt = prev->gencnt;
		747	}
		748	else
		749	{
		750	assert (!next->stack);
		751	allocate_stack (next, 1);
		752	coro_create (&(next->stack->cctx),
		753	setup_coro, (void *)next,
		754	next->stack->sptr, labs (next->stack->ssize));
		755	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		756	prev->cursp = stacklevel;
		757	/* don't add any code here */
		758	}
		759	}
		760	else
		761	{
		762	setup_coro (next);
		763	next->cursp = stacklevel;
		764	}
504	}	765	}
505	}	766	}
		767
		768	LOCK;
		769	if (coro_mortal)
		770	{
		771	SvREFCNT_dec (coro_mortal);
		772	coro_mortal = 0;
		773	}
		774	UNLOCK;
		775	}
		776
		777	/* use this function pointer to call the above function */
		778	/* this is done to increase chances of the compiler not inlining the call */
		779	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		780
		781	#define SV_CORO(sv,func) \
		782	do { \
		783	if (SvROK (sv)) \
		784	sv = SvRV (sv); \
		785	\
		786	if (SvTYPE (sv) == SVt_PVHV) \
		787	{ \
		788	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		789	\
		790	if (!he) \
		791	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		792	\
		793	(sv) = SvRV (HeVAL(he)); \
		794	} \
		795	\
		796	/* must also be changed inside Coro::Cont::yield */ \
		797	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		798	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		799	\
		800	} while(0)
		801
		802	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))
		803
		804	static void
		805	api_transfer (pTHX_ SV prev, SV next, int flags)
		806	{
		807	SV_CORO (prev, "Coro::transfer");
		808	SV_CORO (next, "Coro::transfer");
		809
		810	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		811	}
		812
		813	/ Coro ******************************************************************/
		814
		815	#define PRIO_MAX 3
		816	#define PRIO_HIGH 1
		817	#define PRIO_NORMAL 0
		818	#define PRIO_LOW -1
		819	#define PRIO_IDLE -3
		820	#define PRIO_MIN -4
		821
		822	/* for Coro.pm */
		823	static GV coro_current, coro_idle;
		824	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		825	static int coro_nready;
		826
		827	static void
		828	coro_enq (pTHX_ SV *sv)
		829	{
		830	SV **xprio;
		831	int prio;
		832
		833	if (SvTYPE (sv) != SVt_PVHV)
		834	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		835
		836	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
		837	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		838
		839	prio = prio > PRIO_MAX ? PRIO_MAX
		840	: prio < PRIO_MIN ? PRIO_MIN
		841	: prio;
		842
		843	av_push (coro_ready [prio - PRIO_MIN], sv);
		844	coro_nready++;
		845	}
		846
		847	static SV *
		848	coro_deq (pTHX_ int min_prio)
		849	{
		850	int prio = PRIO_MAX - PRIO_MIN;
		851
		852	min_prio -= PRIO_MIN;
		853	if (min_prio < 0)
		854	min_prio = 0;
		855
		856	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		857	if (AvFILLp (coro_ready [prio]) >= 0)
		858	{
		859	coro_nready--;
		860	return av_shift (coro_ready [prio]);
		861	}
		862
		863	return 0;
		864	}
		865
		866	static void
		867	api_ready (SV *coro)
		868	{
		869	dTHX;
		870
		871	if (SvROK (coro))
		872	coro = SvRV (coro);
		873
		874	LOCK;
		875	coro_enq (aTHX_ SvREFCNT_inc (coro));
		876	UNLOCK;
		877	}
		878
		879	static void
		880	api_schedule (void)
		881	{
		882	dTHX;
		883
		884	SV prev, next;
		885
		886	LOCK;
		887
		888	prev = SvRV (GvSV (coro_current));
		889	next = coro_deq (aTHX_ PRIO_MIN);
		890
		891	if (!next)
		892	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		893
		894	/* free this only after the transfer */
		895	coro_mortal = prev;
		896	SV_CORO (prev, "Coro::schedule");
		897
		898	SvRV (GvSV (coro_current)) = next;
		899
		900	SV_CORO (next, "Coro::schedule");
		901
		902	UNLOCK;
		903
		904	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		905	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		906	}
		907
		908	static void
		909	api_cede (void)
		910	{
		911	dTHX;
		912
		913	LOCK;
		914	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		915	UNLOCK;
		916
		917	api_schedule ();
506	}	918	}
507		919
508	MODULE = Coro::State PACKAGE = Coro::State	920	MODULE = Coro::State PACKAGE = Coro::State
509		921
510	PROTOTYPES: ENABLE	922	PROTOTYPES: ENABLE
511		923
512	BOOT:	924	BOOT:
		925	{ /* {} necessary for stoopid perl-5.6.x */
		926	#ifdef USE_ITHREADS
		927	MUTEX_INIT (&coro_mutex);
		928	#endif
		929	BOOT_PAGESIZE;
		930
		931	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
		932	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
513	HV * stash = gv_stashpvn("Coro::State", 10, TRUE);	933	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
514		934
515	newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV));	935	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
516	newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV));	936	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
517	newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV));	937	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
		938	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
518		939
519	if (!padlist_cache)	940	main_mainstack = PL_mainstack;
520	padlist_cache = newHV ();	941
		942	coroapi.ver = CORO_API_VERSION;
		943	coroapi.transfer = api_transfer;
		944	}
521		945
522	Coro::State	946	Coro::State
523	_newprocess(args)	947	_newprocess(args)
524	SV * args	948	SV * args
525	PROTOTYPE: $	949	PROTOTYPE: $
…		…
527	Coro__State coro;	951	Coro__State coro;
528		952
529	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	953	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
530	croak ("Coro::State::_newprocess expects an arrayref");	954	croak ("Coro::State::_newprocess expects an arrayref");
531		955
532	New (0, coro, 1, struct coro);	956	Newz (0, coro, 1, struct coro);
533		957
534	coro->mainstack = 0; /* actual work is done inside transfer */
535	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	958	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
		959	/coro->mainstack = 0; //actual work is done inside transfer /
		960	/coro->stack = 0;/
536		961
537	RETVAL = coro;	962	RETVAL = coro;
538	OUTPUT:	963	OUTPUT:
539	RETVAL	964	RETVAL
540		965
541	void	966	void
542	transfer(prev, next, flags = SAVE_DEFAV)	967	transfer(prev, next, flags)
543	Coro::State_or_hashref prev	968	SV *prev
544	Coro::State_or_hashref next	969	SV *next
545	int flags	970	int flags
546	PROTOTYPE: @	971	PROTOTYPE: @
547	CODE:	972	CODE:
548		973	PUTBACK;
549	transfer (aTHX_ prev, next, flags);	974	SV_CORO (next, "Coro::transfer");
		975	SV_CORO (prev, "Coro::transfer");
		976	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		977	SPAGAIN;
550		978
551	void	979	void
552	DESTROY(coro)	980	DESTROY(coro)
553	Coro::State coro	981	Coro::State coro
554	CODE:	982	CODE:
555		983
556	if (coro->mainstack)	984	if (coro->mainstack && coro->mainstack != main_mainstack)
557	{	985	{
558	struct coro temp;	986	struct coro temp;
559		987
		988	PUTBACK;
560	SAVE(aTHX_ (&temp), SAVE_ALL);	989	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
561	LOAD(aTHX_ coro);	990	LOAD (aTHX_ coro);
		991	SPAGAIN;
562		992
563	destroy_stacks ();	993	destroy_stacks (aTHX);
564		994
565	LOAD((&temp)); /* this will get rid of defsv etc.. */	995	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		996	SPAGAIN;
		997
		998	coro->mainstack = 0;
566	}	999	}
567		1000
		1001	deallocate_stack (coro);
		1002	SvREFCNT_dec (coro->args);
568	Safefree (coro);	1003	Safefree (coro);
569		1004
570	void	1005	void
571	flush()	1006	_exit(code)
		1007	int code
		1008	PROTOTYPE: $
572	CODE:	1009	CODE:
573	#ifdef MAY_FLUSH	1010	_exit (code);
574	flush_padlist_cache ();
575	#endif
576		1011
577	MODULE = Coro::State PACKAGE = Coro::Cont	1012	MODULE = Coro::State PACKAGE = Coro::Cont
578		1013
579	# this is dirty and should be in it's own .xs
580
581	void	1014	void
582	result(...)	1015	yield(...)
583	PROTOTYPE: @	1016	PROTOTYPE: @
584	CODE:	1017	CODE:
585	static SV *returnstk;	1018	SV *yieldstack;
586	SV *sv;	1019	SV *sv;
587	AV *defav = GvAV (PL_defgv);	1020	AV *defav = GvAV (PL_defgv);
588	struct coro prev, next;	1021	struct coro prev, next;
589		1022
590	if (!returnstk)	1023	yieldstack = *hv_fetch (
591	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1024	(HV *)SvRV (GvSV (coro_current)),
		1025	"yieldstack", sizeof ("yieldstack") - 1,
		1026	0
		1027	);
592		1028
593	/* set up @_ */	1029	/* set up @_ -- ugly */
594	av_clear (defav);	1030	av_clear (defav);
595	av_fill (defav, items - 1);	1031	av_fill (defav, items - 1);
596	while (items--)	1032	while (items--)
597	av_store (defav, items, SvREFCNT_inc (ST(items)));	1033	av_store (defav, items, SvREFCNT_inc (ST(items)));
598		1034
599	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
600	sv = av_pop ((AV *)SvRV (returnstk));	1035	sv = av_pop ((AV *)SvRV (yieldstack));
601	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1036	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
602	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1037	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
603	SvREFCNT_dec (sv);	1038	SvREFCNT_dec (sv);
		1039
604	transfer(prev, next, 0);	1040	coro_state_transfer (aTHX_ prev, next, 0);
605		1041
		1042	MODULE = Coro::State PACKAGE = Coro
		1043
		1044	BOOT:
		1045	{
		1046	int i;
		1047	HV *stash = gv_stashpv ("Coro", TRUE);
		1048
		1049	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1050	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1051	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1052	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1053	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1054	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1055
		1056	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1057	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1058
		1059	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1060	coro_ready[i] = newAV ();
		1061
		1062	{
		1063	SV *sv = perl_get_sv("Coro::API", 1);
		1064
		1065	coroapi.schedule = api_schedule;
		1066	coroapi.cede = api_cede;
		1067	coroapi.ready = api_ready;
		1068	coroapi.nready = &coro_nready;
		1069	coroapi.current = coro_current;
		1070
		1071	GCoroAPI = &coroapi;
		1072	sv_setiv (sv, (IV)&coroapi);
		1073	SvREADONLY_on (sv);
		1074	}
		1075	}
		1076
		1077	#if !PERL_MICRO
		1078
		1079	void
		1080	ready(self)
		1081	SV * self
		1082	PROTOTYPE: $
		1083	CODE:
		1084	api_ready (self);
		1085
		1086	#endif
		1087
		1088	int
		1089	nready(...)
		1090	PROTOTYPE:
		1091	CODE:
		1092	RETVAL = coro_nready;
		1093	OUTPUT:
		1094	RETVAL
		1095
		1096	void
		1097	schedule(...)
		1098	PROTOTYPE:
		1099	CODE:
		1100	api_schedule ();
		1101
		1102	void
		1103	cede(...)
		1104	PROTOTYPE:
		1105	CODE:
		1106	api_cede ();
		1107
		1108	# and these are hacks
		1109	SV *
		1110	_aio_get_state ()
		1111	CODE:
		1112	{
		1113	struct {
		1114	int errorno;
		1115	int laststype;
		1116	int laststatval;
		1117	Stat_t statcache;
		1118	} data;
		1119
		1120	data.errorno = errno;
		1121	data.laststype = PL_laststype;
		1122	data.laststatval = PL_laststatval;
		1123	data.statcache = PL_statcache;
		1124
		1125	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1126	}
		1127	OUTPUT:
		1128	RETVAL
		1129
		1130	void
		1131	_aio_set_state (char *data_)
		1132	PROTOTYPE: $
		1133	CODE:
		1134	{
		1135	struct {
		1136	int errorno;
		1137	int laststype;
		1138	int laststatval;
		1139	Stat_t statcache;
		1140	} data = (void )data_;
		1141
		1142	errno = data->errorno;
		1143	PL_laststype = data->laststype;
		1144	PL_laststatval = data->laststatval;
		1145	PL_statcache = data->statcache;
		1146	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.8 by root, Thu Jul 19 04:13:22 2001 UTC vs. Revision 1.85 by root, Fri Nov 24 00:32:04 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.8 by root, Thu Jul 19 04:13:22 2001 UTC vs.
Revision 1.85 by root, Fri Nov 24 00:32:04 2006 UTC