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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 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	#include "libcoro/coro.c"	9	#include "patchlevel.h"
6		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
7	#include <signal.h>	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
8		41
9	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
10	# include <unistd.h>	43	# include <unistd.h>
11	# include <sys/mman.h>	44	# include <sys/mman.h>
12	# ifndef MAP_ANON
13	# ifdef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
14	# define MAP_ANON MAP_ANONYMOUS	46	# ifdef MAP_ANON
		47	# define MAP_ANONYMOUS MAP_ANON
15	# else	48	# else
16	# undef HAVE_MMAP	49	# undef HAVE_MMAP
17	# endif	50	# endif
18	# 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
19	#endif	59	# endif
20
21	#define MAY_FLUSH /* increases codesize */
22
23	/* perl-related */
24	#define TRANSFER_SAVE_DEFAV 0x00000001
25	#define TRANSFER_SAVE_DEFSV 0x00000002
26	#define TRANSFER_SAVE_ERRSV 0x00000004
27	/* c-related */
28	#define TRANSFER_SAVE_CCTXT 0x00000008
29	#ifdef CORO_LAZY_STACK
30	# define TRANSFER_LAZY_STACK 0x00000010
31	#else
32	# define TRANSFER_LAZY_STACK 0x00000000
33	#endif	60	#endif
34		61
35	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
36	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
37
38	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
39	#define UCORO_STATE "_coro_state"
40		63
41	/* The next macro should delcare a variable stacklevel that contains and approximation	64	/* The next macro should declare a variable stacklevel that contains and approximation
42	* to the current C stack pointer. It's property is that it changes with each call	65	* to the current C stack pointer. Its property is that it changes with each call
43	* and should be unique. */	66	* and should be unique. */
44	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define dSTACKLEVEL void *stacklevel = &stacklevel
45		68
		69	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		70
46	#define labs(l) ((l) >= 0 ? (l) : -(l))	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)
		79	#else
		80	# define LOCK (void)0
		81	# define UNLOCK (void)0
		82	#endif
		83
		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 */
47		88
48	/* this is actually not only the c stack but also c registers etc... */	89	/* this is actually not only the c stack but also c registers etc... */
49	typedef struct {	90	typedef struct {
50	int refcnt; /* pointer reference counter */	91	int refcnt; /* pointer reference counter */
51	int usecnt; /* shared by how many coroutines */	92	int usecnt; /* shared by how many coroutines */
77	AV *curstack;	118	AV *curstack;
78	AV *mainstack;	119	AV *mainstack;
79	SV **stack_sp;	120	SV **stack_sp;
80	OP *op;	121	OP *op;
81	SV **curpad;	122	SV **curpad;
		123	AV *comppad;
		124	CV *compcv;
82	SV **stack_base;	125	SV **stack_base;
83	SV **stack_max;	126	SV **stack_max;
84	SV **tmps_stack;	127	SV **tmps_stack;
85	I32 tmps_floor;	128	I32 tmps_floor;
86	I32 tmps_ix;	129	I32 tmps_ix;
…		…
95	I32 savestack_ix;	138	I32 savestack_ix;
96	I32 savestack_max;	139	I32 savestack_max;
97	OP **retstack;	140	OP **retstack;
98	I32 retstack_ix;	141	I32 retstack_ix;
99	I32 retstack_max;	142	I32 retstack_max;
		143	PMOP *curpm;
100	COP *curcop;	144	COP *curcop;
101	JMPENV *top_env;	145	JMPENV *top_env;
102		146
		147	/* coro process data */
		148	int prio;
		149
103	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
104	AV *args;	151	AV *args;
		152	int refcnt;
105	};	153	};
106		154
107	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
108	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
109		157
110	static AV main_mainstack; / used to differentiate between $main and others */	158	static AV *
111	static HV *coro_state_stash;	159	coro_clone_padlist (pTHX_ CV *cv)
112	static SV *ucoro_state_sv;
113	static U32 ucoro_state_hash;
114	static HV *padlist_cache;
115
116	/* for Coro.pm */
117	static GV coro_current, coro_idle;
118	static AV *coro_ready;
119
120	/* mostly copied from op.c:cv_clone2 */
121	STATIC AV *
122	clone_padlist (AV *protopadlist)
123	{	160	{
124	AV *av;	161	AV *padlist = CvPADLIST (cv);
125	I32 ix;
126	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
127	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
128	SV **pname = AvARRAY (protopad_name);
129	SV **ppad = AvARRAY (protopad);
130	I32 fname = AvFILLp (protopad_name);
131	I32 fpad = AvFILLp (protopad);
132	AV newpadlist, newpad_name, *newpad;	162	AV newpadlist, newpad;
133	SV **npad;
134
135	newpad_name = newAV ();
136	for (ix = fname; ix >= 0; ix--)
137	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
138
139	newpad = newAV ();
140	av_fill (newpad, AvFILLp (protopad));
141	npad = AvARRAY (newpad);
142		163
143	newpadlist = newAV ();	164	newpadlist = newAV ();
144	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
145	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)));
146	av_store (newpadlist, 1, (SV *) newpad);	175	av_store (newpadlist, 1, (SV *)newpad);
147		176
148	av = newAV (); /* will be @_ */	177	return newpadlist;
149	av_extend (av, 0);	178	}
150	av_store (newpad, 0, (SV *) av);
151	AvFLAGS (av) = AVf_REIFY;
152		179
153	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))
154	{	185	{
155	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	186	I32 i = AvFILLp (padlist);
156	if (namesv && namesv != &PL_sv_undef)	187	while (i >= 0)
157	{	188	{
158	char name = SvPVX (namesv); / XXX */	189	SV **svp = av_fetch (padlist, i--, FALSE);
159	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	190	if (svp)
160	{ /* lexical from outside? */
161	npad[ix] = SvREFCNT_inc (ppad[ix]);
162	}	191	{
163	else
164	{ /* our own lexical */
165	SV *sv;	192	SV *sv;
166	if (*name == '&')	193	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
167	sv = SvREFCNT_inc (ppad[ix]);	194	SvREFCNT_dec (sv);
168	else if (*name == '@')	195
169	sv = (SV *) newAV ();	196	SvREFCNT_dec (*svp);
170	else if (*name == '%')
171	sv = (SV *) newHV ();
172	else
173	sv = NEWSV (0, 0);
174	if (!SvPADBUSY (sv))
175	SvPADMY_on (sv);
176	npad[ix] = sv;
177	}	197	}
178	}	198	}
179	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	199
180	{	200	SvREFCNT_dec ((SV*)padlist);
181	npad[ix] = SvREFCNT_inc (ppad[ix]);
182	}
183	else
184	{
185	SV *sv = NEWSV (0, 0);
186	SvPADTMP_on (sv);
187	npad[ix] = sv;
188	}
189	}	201	}
		202	}
190		203
191	#if 0 /* return -ENOTUNDERSTOOD */	204	static int
192	/* 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;
193		209
194	for (ix = fpad; ix > 0; ix--) {	210	/* casting is fun. */
195	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
196	if (namesv	212	free_padlist (aTHX_ padlist);
197	&& namesv != &PL_sv_undef	213
198	&& !(SvFLAGS(namesv) & SVf_FAKE)	214	SvREFCNT_dec (av);
199	&& *SvPVX(namesv) == '&'	215
200	&& CvCLONE(ppad[ix]))	216	return 0;
201	{	217	}
202	CV kid = cv_clone((CV)ppad[ix]);	218
203	SvREFCNT_dec(ppad[ix]);	219	#define PERL_MAGIC_coro PERL_MAGIC_ext
204	CvCLONE_on(kid);	220
205	SvPADMY_on(kid);	221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
206	npad[ix] = (SV*)kid;	222
207	}	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 ();
208	}	256	}
209	#endif
210		257
211	return newpadlist;
212	}
213
214	#ifdef MAY_FLUSH
215	STATIC AV *
216	free_padlist (AV *padlist)
217	{
218	/* may be during global destruction */
219	if (SvREFCNT(padlist))
220	{
221	I32 i = AvFILLp(padlist);
222	while (i >= 0)
223	{
224	SV **svp = av_fetch(padlist, i--, FALSE);
225	SV sv = svp ? svp : Nullsv;
226	if (sv)
227	SvREFCNT_dec(sv);
228	}
229
230	SvREFCNT_dec((SV*)padlist);
231	}
232	}
233	#endif
234
235	/* the next two functions merely cache the padlists */
236	STATIC void
237	get_padlist (CV *cv)
238	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
240
241	if (he && AvFILLp ((AV )he) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
243	else
244	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
245	}
246
247	STATIC void
248	put_padlist (CV *cv)
249	{
250	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
251
252	if (SvTYPE (*he) != SVt_PVAV)
253	{
254	SvREFCNT_dec (*he);
255	he = (SV )newAV ();
256	}
257
258	av_push ((AV )he, (SV *)CvPADLIST (cv));	258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
259	}	259	}
260
261	#ifdef MAY_FLUSH
262	STATIC void
263	flush_padlist_cache ()
264	{
265	HV *hv = padlist_cache;
266	padlist_cache = newHV ();
267
268	if (hv_iterinit (hv))
269	{
270	HE *he;
271	AV *padlist;
272
273	while (!!(he = hv_iternext (hv)))
274	{
275	AV av = (AV )HeVAL(he);
276
277	/* casting is fun. */
278	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
279	free_padlist (padlist);
280	}
281	}
282
283	SvREFCNT_dec (hv);
284	}
285	#endif
286		260
287	#define SB do {	261	#define SB do {
288	#define SE } while (0)	262	#define SE } while (0)
289		263
290	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	264	#define LOAD(state) load_state(aTHX_ (state));
291	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
292		266
293	#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
294		268
295	static void	269	static void
296	load_state(pTHX_ Coro__State c)	270	load_state(pTHX_ Coro__State c)
297	{	271	{
298	PL_dowarn = c->dowarn;	272	PL_dowarn = c->dowarn;
…		…
302	PL_curstack = c->curstack;	276	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;	277	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;	278	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;	279	PL_op = c->op;
306	PL_curpad = c->curpad;	280	PL_curpad = c->curpad;
		281	PL_comppad = c->comppad;
		282	PL_compcv = c->compcv;
307	PL_stack_base = c->stack_base;	283	PL_stack_base = c->stack_base;
308	PL_stack_max = c->stack_max;	284	PL_stack_max = c->stack_max;
309	PL_tmps_stack = c->tmps_stack;	285	PL_tmps_stack = c->tmps_stack;
310	PL_tmps_floor = c->tmps_floor;	286	PL_tmps_floor = c->tmps_floor;
311	PL_tmps_ix = c->tmps_ix;	287	PL_tmps_ix = c->tmps_ix;
…		…
317	PL_scopestack_ix = c->scopestack_ix;	293	PL_scopestack_ix = c->scopestack_ix;
318	PL_scopestack_max = c->scopestack_max;	294	PL_scopestack_max = c->scopestack_max;
319	PL_savestack = c->savestack;	295	PL_savestack = c->savestack;
320	PL_savestack_ix = c->savestack_ix;	296	PL_savestack_ix = c->savestack_ix;
321	PL_savestack_max = c->savestack_max;	297	PL_savestack_max = c->savestack_max;
		298	#if PERL_VERSION < 9
322	PL_retstack = c->retstack;	299	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;	300	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;	301	PL_retstack_max = c->retstack_max;
		302	#endif
		303	PL_curpm = c->curpm;
325	PL_curcop = c->curcop;	304	PL_curcop = c->curcop;
326	PL_top_env = c->top_env;	305	PL_top_env = c->top_env;
327		306
328	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
329	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
338	{	317	{
339	AV padlist = (AV )POPs;	318	AV padlist = (AV )POPs;
340		319
341	if (padlist)	320	if (padlist)
342	{	321	{
343	put_padlist (cv); /* mark this padlist as available */	322	put_padlist (aTHX_ cv); /* mark this padlist as available */
344	CvPADLIST(cv) = padlist;	323	CvPADLIST(cv) = padlist;
345	#ifdef USE_THREADS
346	/CvOWNER(cv) = (struct perl_thread )POPs;*/
347	#endif
348	}	324	}
349		325
350	++CvDEPTH(cv);	326	++CvDEPTH(cv);
351	}	327	}
352		328
…		…
370		346
371	PUSHs (Nullsv);	347	PUSHs (Nullsv);
372	/* this loop was inspired by pp_caller */	348	/* this loop was inspired by pp_caller */
373	for (;;)	349	for (;;)
374	{	350	{
375	do	351	while (cxix >= 0)
376	{	352	{
377	PERL_CONTEXT *cx = &ccstk[cxix--];	353	PERL_CONTEXT *cx = &ccstk[cxix--];
378		354
379	if (CxTYPE(cx) == CXt_SUB)	355	if (CxTYPE(cx) == CXt_SUB)
380	{	356	{
381	CV *cv = cx->blk_sub.cv;	357	CV *cv = cx->blk_sub.cv;
382	if (CvDEPTH(cv))	358	if (CvDEPTH(cv))
383	{	359	{
384	#ifdef USE_THREADS
385	/XPUSHs ((SV )CvOWNER(cv));*/
386	/CvOWNER(cv) = 0;/
387	/error must unlock this cv etc.. etc.../
388	#endif
389	EXTEND (SP, CvDEPTH(cv)*2);	360	EXTEND (SP, CvDEPTH(cv)*2);
390		361
391	while (--CvDEPTH(cv))	362	while (--CvDEPTH(cv))
392	{	363	{
393	/* this tells the restore code to increment CvDEPTH */	364	/* this tells the restore code to increment CvDEPTH */
…		…
396	}	367	}
397		368
398	PUSHs ((SV *)CvPADLIST(cv));	369	PUSHs ((SV *)CvPADLIST(cv));
399	PUSHs ((SV *)cv);	370	PUSHs ((SV *)cv);
400		371
401	get_padlist (cv); /* this is a monster */	372	get_padlist (aTHX_ cv);
402	}	373	}
403	}	374	}
		375	#ifdef CXt_FORMAT
404	else if (CxTYPE(cx) == CXt_FORMAT)	376	else if (CxTYPE(cx) == CXt_FORMAT)
405	{	377	{
406	/* 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? */
407	/* my bold guess is as a simple, plain sub... */	379	/* my bold guess is as a simple, plain sub... */
408	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");
409	}	381	}
		382	#endif
410	}	383	}
411	while (cxix >= 0);
412		384
413	if (top_si->si_type == PERLSI_MAIN)	385	if (top_si->si_type == PERLSI_MAIN)
414	break;	386	break;
415		387
416	top_si = top_si->si_prev;	388	top_si = top_si->si_prev;
…		…
422	}	394	}
423		395
424	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
425	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
426	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
427
428	/* I have not the slightest idea of why av_reify is necessary */
429	/* but if it's missing the defav contents magically get replaced sometimes */
430	if (c->defav)
431	av_reify (c->defav);
432		399
433	c->dowarn = PL_dowarn;	400	c->dowarn = PL_dowarn;
434	c->in_eval = PL_in_eval;	401	c->in_eval = PL_in_eval;
435		402
436	c->curstackinfo = PL_curstackinfo;	403	c->curstackinfo = PL_curstackinfo;
437	c->curstack = PL_curstack;	404	c->curstack = PL_curstack;
438	c->mainstack = PL_mainstack;	405	c->mainstack = PL_mainstack;
439	c->stack_sp = PL_stack_sp;	406	c->stack_sp = PL_stack_sp;
440	c->op = PL_op;	407	c->op = PL_op;
441	c->curpad = PL_curpad;	408	c->curpad = PL_curpad;
		409	c->comppad = PL_comppad;
		410	c->compcv = PL_compcv;
442	c->stack_base = PL_stack_base;	411	c->stack_base = PL_stack_base;
443	c->stack_max = PL_stack_max;	412	c->stack_max = PL_stack_max;
444	c->tmps_stack = PL_tmps_stack;	413	c->tmps_stack = PL_tmps_stack;
445	c->tmps_floor = PL_tmps_floor;	414	c->tmps_floor = PL_tmps_floor;
446	c->tmps_ix = PL_tmps_ix;	415	c->tmps_ix = PL_tmps_ix;
…		…
452	c->scopestack_ix = PL_scopestack_ix;	421	c->scopestack_ix = PL_scopestack_ix;
453	c->scopestack_max = PL_scopestack_max;	422	c->scopestack_max = PL_scopestack_max;
454	c->savestack = PL_savestack;	423	c->savestack = PL_savestack;
455	c->savestack_ix = PL_savestack_ix;	424	c->savestack_ix = PL_savestack_ix;
456	c->savestack_max = PL_savestack_max;	425	c->savestack_max = PL_savestack_max;
		426	#if PERL_VERSION < 9
457	c->retstack = PL_retstack;	427	c->retstack = PL_retstack;
458	c->retstack_ix = PL_retstack_ix;	428	c->retstack_ix = PL_retstack_ix;
459	c->retstack_max = PL_retstack_max;	429	c->retstack_max = PL_retstack_max;
		430	#endif
		431	c->curpm = PL_curpm;
460	c->curcop = PL_curcop;	432	c->curcop = PL_curcop;
461	c->top_env = PL_top_env;	433	c->top_env = PL_top_env;
462	}	434	}
463		435
464	/*	436	/*
465	* allocate various perl stacks. This is an exact copy	437	* allocate various perl stacks. This is an exact copy
466	* of perl.c:init_stacks, except that it uses less memory	438	* of perl.c:init_stacks, except that it uses less memory
467	* on the assumption that coroutines do not usually need	439	* on the (sometimes correct) assumption that coroutines do
468	* a lot of stackspace.	440	* not usually need a lot of stackspace.
469	*/	441	*/
470	STATIC void	442	static void
471	coro_init_stacks (pTHX)	443	coro_init_stacks (pTHX)
472	{	444	{
		445	LOCK;
		446
473	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
474	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
475	PL_curstack = PL_curstackinfo->si_stack;	449	PL_curstack = PL_curstackinfo->si_stack;
476	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
477		451
…		…
486		460
487	New(54,PL_markstack,16,I32);	461	New(54,PL_markstack,16,I32);
488	PL_markstack_ptr = PL_markstack;	462	PL_markstack_ptr = PL_markstack;
489	PL_markstack_max = PL_markstack + 16;	463	PL_markstack_max = PL_markstack + 16;
490		464
		465	#ifdef SET_MARK_OFFSET
491	SET_MARK_OFFSET;	466	SET_MARK_OFFSET;
		467	#endif
492		468
493	New(54,PL_scopestack,16,I32);	469	New(54,PL_scopestack,16,I32);
494	PL_scopestack_ix = 0;	470	PL_scopestack_ix = 0;
495	PL_scopestack_max = 16;	471	PL_scopestack_max = 16;
496		472
497	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,96,ANY);
498	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
499	PL_savestack_max = 96;	475	PL_savestack_max = 96;
500		476
		477	#if PERL_VERSION < 9
501	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,8,OP*);
502	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
503	PL_retstack_max = 8;	480	PL_retstack_max = 8;
		481	#endif
		482
		483	UNLOCK;
504	}	484	}
505		485
506	/*	486	/*
507	* destroy the stacks, the callchain etc...	487	* destroy the stacks, the callchain etc...
508	* still there is a memleak of 128 bytes...
509	*/	488	*/
510	STATIC void	489	static void
511	destroy_stacks(pTHX)	490	destroy_stacks(pTHX)
512	{	491	{
		492	if (!IN_DESTRUCT)
		493	{
513	/* is this ugly, I ask? */	494	/* is this ugly, I ask? */
514	while (PL_scopestack_ix)	495	LEAVE_SCOPE (0);
515	LEAVE;
516		496
517	/* sure it is, but more important: is it correct?? :/ */	497	/* sure it is, but more important: is it correct?? :/ */
518	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
519	FREETMPS;	498	FREETMPS;
		499
		500	/POPSTACK_TO (PL_mainstack);//D//use/
		501	}
520		502
521	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
523		505
524	while (PL_curstackinfo)	506	while (PL_curstackinfo)
525	{	507	{
526	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
527		509
528	{	510	{ /D//remove/
529	dSP;	511	dSP;
530	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	512	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
531	PUTBACK; /* possibly superfluous */	513	PUTBACK; /* possibly superfluous */
532	}	514	}
533		515
534	dounwind(-1);	516	if (!IN_DESTRUCT)
535		517	{
		518	dounwind (-1);/D//remove/
536	SvREFCNT_dec(PL_curstackinfo->si_stack);	519	SvREFCNT_dec (PL_curstackinfo->si_stack);
		520	}
		521
537	Safefree(PL_curstackinfo->si_cxstack);	522	Safefree (PL_curstackinfo->si_cxstack);
538	Safefree(PL_curstackinfo);	523	Safefree (PL_curstackinfo);
539	PL_curstackinfo = p;	524	PL_curstackinfo = p;
540	}	525	}
541		526
542	Safefree(PL_tmps_stack);	527	Safefree (PL_tmps_stack);
543	Safefree(PL_markstack);	528	Safefree (PL_markstack);
544	Safefree(PL_scopestack);	529	Safefree (PL_scopestack);
545	Safefree(PL_savestack);	530	Safefree (PL_savestack);
		531	#if PERL_VERSION < 9
546	Safefree(PL_retstack);	532	Safefree (PL_retstack);
		533	#endif
547	}	534	}
548		535
549	static void	536	static void
550	allocate_stack (Coro__State ctx, int alloc)	537	allocate_stack (Coro__State ctx, int alloc)
551	{	538	{
…		…
554	New (0, stack, 1, coro_stack);	541	New (0, stack, 1, coro_stack);
555		542
556	stack->refcnt = 1;	543	stack->refcnt = 1;
557	stack->usecnt = 1;	544	stack->usecnt = 1;
558	stack->gencnt = ctx->gencnt = 0;	545	stack->gencnt = ctx->gencnt = 0;
		546
559	if (alloc)	547	if (alloc)
560	{	548	{
561	#ifdef HAVE_MMAP	549	#if HAVE_MMAP
562	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	550	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
563	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
564	if (stack->sptr == (void *)-1)	552	if (stack->sptr != (void *)-1)
565	#endif
566	{	553	{
567	/FIXME//D//* reasonable stack size! */	554	# if STACKGUARD
		555	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		556	# endif
		557	}
		558	else
		559	#endif
		560	{
568	stack->ssize = -4096 * sizeof (long);	561	stack->ssize = - (STACKSIZE * (long)sizeof (long));
569	New (0, stack->sptr, 4096, long);	562	New (0, stack->sptr, STACKSIZE, long);
570	}	563	}
571	}	564	}
572	else	565	else
573	stack->sptr = 0;	566	stack->sptr = 0;
574		567
…		…
588	{	581	{
589	#ifdef HAVE_MMAP	582	#ifdef HAVE_MMAP
590	if (stack->ssize > 0 && stack->sptr)	583	if (stack->ssize > 0 && stack->sptr)
591	munmap (stack->sptr, stack->ssize);	584	munmap (stack->sptr, stack->ssize);
592	else	585	else
593	#else	586	#endif
594	Safefree (stack->sptr);	587	Safefree (stack->sptr);
595	#endif	588
596	Safefree (stack);	589	Safefree (stack);
597	}	590	}
598	else if (ctx->gencnt == stack->gencnt)	591	else if (ctx->gencnt == stack->gencnt)
599	--stack->usecnt;	592	--stack->usecnt;
600	}	593	}
…		…
604	setup_coro (void *arg)	597	setup_coro (void *arg)
605	{	598	{
606	/*	599	/*
607	* emulate part of the perl startup here.	600	* emulate part of the perl startup here.
608	*/	601	*/
		602	dTHX;
609	dSP;	603	dSP;
610	Coro__State ctx = (Coro__State)arg;	604	Coro__State ctx = (Coro__State)arg;
611	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	605	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
612		606
613	coro_init_stacks (aTHX);	607	coro_init_stacks (aTHX);
614	/PL_curcop = 0;/	608	/PL_curcop = 0;/
615	/PL_in_eval = PL_in_eval;/ /* inherit */	609	/PL_in_eval = PL_in_eval;/ /* inherit */
616	SvREFCNT_dec (GvAV (PL_defgv));	610	SvREFCNT_dec (GvAV (PL_defgv));
617	GvAV (PL_defgv) = ctx->args;	611	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
618		612
619	SPAGAIN;	613	SPAGAIN;
620		614
621	if (ctx->stack)	615	if (ctx->stack)
622	{	616	{
…		…
633	}	627	}
634	else	628	else
635	{	629	{
636	UNOP myop;	630	UNOP myop;
637		631
638	PL_op = (OP *)&myop;
639
640	Zero(&myop, 1, UNOP);	632	Zero(&myop, 1, UNOP);
641	myop.op_next = Nullop;	633	myop.op_next = Nullop;
642	myop.op_flags = OPf_WANT_VOID;	634	myop.op_flags = OPf_WANT_VOID;
		635
		636	PL_op = (OP *)&myop;
643		637
644	PUSHMARK(SP);	638	PUSHMARK(SP);
645	XPUSHs (sub_init);	639	XPUSHs (sub_init);
646	/*	640	/*
647	* the next line is slightly wrong, as PL_op->op_next	641	* the next line is slightly wrong, as PL_op->op_next
…		…
649	* that doesn't matter, though, since it is only	643	* that doesn't matter, though, since it is only
650	* pp_nextstate and we never return...	644	* pp_nextstate and we never return...
651	* ah yes, and I don't care anyways ;)	645	* ah yes, and I don't care anyways ;)
652	*/	646	*/
653	PUTBACK;	647	PUTBACK;
654	PL_op = pp_entersub();	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
655	SPAGAIN;	649	SPAGAIN;
656		650
657	ENTER; /* necessary e.g. for dounwind */	651	ENTER; /* necessary e.g. for dounwind */
658	}	652	}
659	}	653	}
…		…
662	continue_coro (void *arg)	656	continue_coro (void *arg)
663	{	657	{
664	/*	658	/*
665	* this is a _very_ stripped down perl interpreter ;)	659	* this is a _very_ stripped down perl interpreter ;)
666	*/	660	*/
		661	dTHX;
667	Coro__State ctx = (Coro__State)arg;	662	Coro__State ctx = (Coro__State)arg;
668		663
669	/FIXME//* must set up top_env here */	664	PL_top_env = &PL_start_env;
		665
670	ctx->cursp = 0;	666	ctx->cursp = 0;
671	PL_op = PL_op->op_next;	667	PL_op = PL_op->op_next;
672	CALLRUNOPS(aTHX);	668	CALLRUNOPS(aTHX);
673		669
674	abort ();	670	abort ();
675	}	671	}
676		672
677	STATIC void	673	/* never call directly, always through the coro_state_transfer global variable */
		674	static void
678	transfer(pTHX_ struct coro prev, struct coro next, int flags)	675	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
679	{	676	{
680	dSP;
681	dSTACKLEVEL;	677	dSTACKLEVEL;
682		678
683	if (prev != next)	679	if (prev != next)
684	{	680	{
		681	/* has this coro been created yet? */
685	if (next->mainstack)	682	if (next->mainstack)
686	{	683	{
		684	LOCK;
687	SAVE (prev, flags);	685	SAVE (prev, flags);
688	LOAD (next);	686	LOAD (next);
		687	UNLOCK;
689		688
690	/* mark this state as in-use */	689	/* mark this state as in-use */
691	next->mainstack = 0;	690	next->mainstack = 0;
692	next->tmps_ix = -2;	691	next->tmps_ix = -2;
693		692
…		…
712	continue_coro, (void *)next,	711	continue_coro, (void *)next,
713	next->stack->sptr, labs (next->stack->ssize));	712	next->stack->sptr, labs (next->stack->ssize));
714	}	713	}
715		714
716	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		716	prev->cursp = stacklevel;
		717	/* don't add any code here */
717	}	718	}
718		719	else
		720	next->cursp = stacklevel;
719	}	721	}
720	else if (next->tmps_ix == -2)	722	else if (next->tmps_ix == -2)
721	croak ("tried to transfer to running coroutine");	723	croak ("tried to transfer to running coroutine");
722	else	724	else
723	{	725	{
		726	LOCK;
724	SAVE (prev, -1); /* first get rid of the old state */	727	SAVE (prev, -1); /* first get rid of the old state */
		728	UNLOCK;
725		729
		730	/* create the coroutine for the first time */
726	if (flags & TRANSFER_SAVE_CCTXT)	731	if (flags & TRANSFER_SAVE_CCTXT)
727	{	732	{
728	if (!prev->stack)	733	if (!prev->stack)
729	allocate_stack (prev, 0);	734	allocate_stack (prev, 0);
730		735
		736	/* the new coroutine starts with start_env again */
		737	PL_top_env = &PL_start_env;
		738
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	739	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732	{	740	{
733	setup_coro (next);	741	setup_coro (next);
		742	next->cursp = stacklevel;
734		743
735	prev->stack->refcnt++;	744	prev->stack->refcnt++;
736	prev->stack->usecnt++;	745	prev->stack->usecnt++;
737	next->stack = prev->stack;	746	next->stack = prev->stack;
738	next->gencnt = prev->gencnt;	747	next->gencnt = prev->gencnt;
739	}	748	}
740	else	749	else
741	{	750	{
		751	assert (!next->stack);
742	allocate_stack (next, 1);	752	allocate_stack (next, 1);
743	coro_create (&(next->stack->cctx),	753	coro_create (&(next->stack->cctx),
744	setup_coro, (void *)next,	754	setup_coro, (void *)next,
745	next->stack->sptr, labs (next->stack->ssize));	755	next->stack->sptr, labs (next->stack->ssize));
746	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	756	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		757	prev->cursp = stacklevel;
		758	/* don't add any code here */
747	}	759	}
748	}	760	}
749	else	761	else
		762	{
750	setup_coro (next);	763	setup_coro (next);
		764	next->cursp = stacklevel;
		765	}
751	}	766	}
752	}	767	}
753		768
754	next->cursp = stacklevel;	769	LOCK;
		770	if (coro_mortal)
		771	{
		772	SvREFCNT_dec (coro_mortal);
		773	coro_mortal = 0;
		774	}
		775	UNLOCK;
755	}	776	}
		777
		778	/* use this function pointer to call the above function */
		779	/* this is done to increase chances of the compiler not inlining the call */
		780	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		781
		782	static void
		783	coro_state_destroy (struct coro *coro)
		784	{
		785	if (coro->refcnt--)
		786	return;
		787
		788	if (coro->mainstack && coro->mainstack != main_mainstack)
		789	{
		790	struct coro temp;
		791
		792	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		793	LOAD (aTHX_ coro);
		794
		795	destroy_stacks (aTHX);
		796
		797	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		798
		799	coro->mainstack = 0;
		800	}
		801
		802	deallocate_stack (coro);
		803	SvREFCNT_dec (coro->args);
		804	Safefree (coro);
		805	}
		806
		807	static int
		808	coro_state_clear (SV sv, MAGIC mg)
		809	{
		810	struct coro coro = (struct coro )mg->mg_ptr;
		811	mg->mg_ptr = 0;
		812
		813	coro_state_destroy (coro);
		814
		815	return 0;
		816	}
		817
		818	static int
		819	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		820	{
		821	struct coro coro = (struct coro )mg->mg_ptr;
		822
		823	++coro->refcnt;
		824
		825	return 0;
		826	}
		827
		828	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
756		829
757	static struct coro *	830	static struct coro *
758	sv_to_coro (SV arg, const char funcname, const char *varname)	831	SvSTATE (SV *coro)
759	{	832	{
760	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)	833	HV *stash;
		834	MAGIC *mg;
		835
		836	if (SvROK (coro))
		837	coro = SvRV (coro);
		838
		839	stash = SvSTASH (coro);
		840	if (stash != coro_stash && stash != coro_state_stash)
		841	{
		842	/* very slow, but rare, check */
		843	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		844	croak ("Coro::State object required");
		845	}
		846
		847	mg = SvMAGIC (coro);
		848	assert (mg->mg_type == PERL_MAGIC_ext);
		849	return (struct coro *)mg->mg_ptr;
		850	}
		851
		852	static void
		853	api_transfer (pTHX_ SV prev, SV next, int flags)
		854	{
		855	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		856	}
		857
		858	/ Coro ******************************************************************/
		859
		860	#define PRIO_MAX 3
		861	#define PRIO_HIGH 1
		862	#define PRIO_NORMAL 0
		863	#define PRIO_LOW -1
		864	#define PRIO_IDLE -3
		865	#define PRIO_MIN -4
		866
		867	/* for Coro.pm */
		868	static GV coro_current, coro_idle;
		869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		870	static int coro_nready;
		871
		872	static void
		873	coro_enq (pTHX_ SV *sv)
		874	{
		875	int prio;
		876
		877	if (SvTYPE (sv) != SVt_PVHV)
		878	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		879
		880	prio = SvSTATE (sv)->prio;
		881
		882	av_push (coro_ready [prio - PRIO_MIN], sv);
		883	coro_nready++;
		884	}
		885
		886	static SV *
		887	coro_deq (pTHX_ int min_prio)
		888	{
		889	int prio = PRIO_MAX - PRIO_MIN;
		890
		891	min_prio -= PRIO_MIN;
		892	if (min_prio < 0)
		893	min_prio = 0;
		894
		895	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		896	if (AvFILLp (coro_ready [prio]) >= 0)
761	{	897	{
762	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	898	coro_nready--;
763		899	return av_shift (coro_ready [prio]);
764	if (!he)
765	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
766
767	arg = HeVAL(he);
768	}	900	}
		901
		902	return 0;
		903	}
		904
		905	static void
		906	api_ready (SV *coro)
		907	{
		908	dTHX;
		909
		910	if (SvROK (coro))
		911	coro = SvRV (coro);
		912
		913	LOCK;
		914	coro_enq (aTHX_ SvREFCNT_inc (coro));
		915	UNLOCK;
		916	}
		917
		918	static void
		919	api_schedule (void)
		920	{
		921	dTHX;
		922
		923	SV prev, next;
		924	SV *current = GvSV (coro_current);
		925
		926	for (;;)
		927	{
		928	LOCK;
		929
		930	next = coro_deq (aTHX_ PRIO_MIN);
		931
		932	if (next)
		933	break;
		934
		935	UNLOCK;
		936
769		937	{
770	/* must also be changed inside Coro::Cont::yield */	938	dSP;
771	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	939
772	return (struct coro ) SvIV((SV)SvRV(arg));	940	ENTER;
773	else	941	SAVETMPS;
774	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	942
		943	PUSHMARK (SP);
		944	PUTBACK;
		945	call_sv (GvSV (coro_idle), G_DISCARD);
		946
		947	FREETMPS;
		948	LEAVE;
		949	}
		950	}
		951
		952	prev = SvRV (current);
		953	SvRV (current) = next;
		954
		955	/* free this only after the transfer */
		956	coro_mortal = prev;
		957
		958	UNLOCK;
		959
		960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		962	}
		963
		964	static void
		965	api_cede (void)
		966	{
		967	dTHX;
		968
		969	LOCK;
		970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		971	UNLOCK;
		972
		973	api_schedule ();
775	}	974	}
776		975
777	MODULE = Coro::State PACKAGE = Coro::State	976	MODULE = Coro::State PACKAGE = Coro::State
778		977
779	PROTOTYPES: ENABLE	978	PROTOTYPES: DISABLE
780		979
781	BOOT:	980	BOOT:
782	{ /* {} necessary for stoopid perl-5.6.x */	981	{
783	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	982	#ifdef USE_ITHREADS
784	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	983	MUTEX_INIT (&coro_mutex);
		984	#endif
		985	BOOT_PAGESIZE;
		986
785	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
786		988
787	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	989	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
788	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	990	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
789	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	991	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
790	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	992	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
791		993
792	if (!padlist_cache)
793	padlist_cache = newHV ();
794
795	main_mainstack = PL_mainstack;	994	main_mainstack = PL_mainstack;
796	}
797		995
798	Coro::State	996	coroapi.ver = CORO_API_VERSION;
799	_newprocess(args)	997	coroapi.transfer = api_transfer;
800	SV * args	998
801	PROTOTYPE: $	999	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		1000	}
		1001
		1002	SV *
		1003	new (char *klass, ...)
802	CODE:	1004	CODE:
803	Coro__State coro;	1005	{
		1006	struct coro *coro;
		1007	HV *hv;
		1008	int i;
804		1009
805	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
806	croak ("Coro::State::_newprocess expects an arrayref");
807
808	New (0, coro, 1, struct coro);	1010	Newz (0, coro, 1, struct coro);
		1011	coro->args = newAV ();
809		1012
810	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1013	for (i = 1; i < items; i++)
		1014	av_push (coro->args, newSVsv (ST (i)));
		1015
811	coro->mainstack = 0; /* actual work is done inside transfer */	1016	/coro->mainstack = 0; //actual work is done inside transfer /
812	coro->stack = 0;	1017	/coro->stack = 0;/
813		1018
814	RETVAL = coro;	1019	hv = newHV ();
		1020	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		1021	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1022	}
815	OUTPUT:	1023	OUTPUT:
816	RETVAL	1024	RETVAL
817		1025
818	void	1026	void
819	transfer(prev, next, flags)	1027	transfer(prev, next, flags)
820	Coro::State_or_hashref prev	1028	SV *prev
821	Coro::State_or_hashref next	1029	SV *next
822	int flags	1030	int flags
823	PROTOTYPE: @
824	CODE:	1031	CODE:
825	PUTBACK;	1032	PUTBACK;
826	transfer (aTHX_ prev, next, flags);	1033	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
827	SPAGAIN;	1034	SPAGAIN;
828		1035
		1036	int
		1037	prio (Coro::State coro, int newprio = 0)
		1038	ALIAS:
		1039	nice = 1
		1040	CODE:
		1041	{
		1042	RETVAL = coro->prio;
		1043
		1044	if (items > 1)
		1045	{
		1046	if (ix)
		1047	newprio += coro->prio;
		1048
		1049	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1050	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1051
		1052	coro->prio = newprio;
		1053	}
		1054	}
		1055
829	void	1056	void
830	DESTROY(coro)	1057	_clone_state_from (SV dst, SV src)
831	Coro::State coro	1058	CODE:
832	CODE:	1059	{
		1060	struct coro *coro_src = SvSTATE (src);
833		1061
834	if (coro->mainstack && coro->mainstack != main_mainstack)	1062	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
835	{
836	struct coro temp;
837		1063
838	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1064	++coro_src->refcnt;
839	LOAD(aTHX_ coro);	1065	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
840		1066	}
841	destroy_stacks (aTHX);
842
843	LOAD((&temp)); /* this will get rid of defsv etc.. */
844
845	coro->mainstack = 0;
846	}
847
848	deallocate_stack (coro);
849
850	Safefree (coro);
851		1067
852	void	1068	void
853	flush()
854	CODE:
855	#ifdef MAY_FLUSH
856	flush_padlist_cache ();
857	#endif
858
859	void
860	_exit(code)	1069	_exit (code)
861	int code	1070	int code
862	PROTOTYPE: $	1071	PROTOTYPE: $
863	CODE:	1072	CODE:
864	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
865	_exit (code);	1073	_exit (code);
866	#else
867	signal (SIGTERM, SIG_DFL);
868	raise (SIGTERM);
869	exit (code);
870	#endif
871		1074
872	MODULE = Coro::State PACKAGE = Coro::Cont	1075	MODULE = Coro::State PACKAGE = Coro::Cont
873		1076
874	# this is slightly dirty (should expose a c-level api)
875
876	void	1077	void
877	yield(...)	1078	yield (...)
878	PROTOTYPE: @	1079	PROTOTYPE: @
879	CODE:	1080	CODE:
880	static SV *returnstk;	1081	{
		1082	SV *yieldstack;
881	SV *sv;	1083	SV *sv;
882	AV *defav = GvAV (PL_defgv);	1084	AV *defav = GvAV (PL_defgv);
883	struct coro prev, next;	1085	struct coro prev, next;
884		1086
885	if (!returnstk)	1087	yieldstack = *hv_fetch (
886	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1088	(HV *)SvRV (GvSV (coro_current)),
		1089	"yieldstack", sizeof ("yieldstack") - 1,
		1090	0
		1091	);
887		1092
888	/* set up @_ -- ugly */	1093	/* set up @_ -- ugly */
889	av_clear (defav);	1094	av_clear (defav);
890	av_fill (defav, items - 1);	1095	av_fill (defav, items - 1);
891	while (items--)	1096	while (items--)
892	av_store (defav, items, SvREFCNT_inc (ST(items)));	1097	av_store (defav, items, SvREFCNT_inc (ST(items)));
893		1098
894	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
895	sv = av_pop ((AV *)SvRV (returnstk));	1099	sv = av_pop ((AV *)SvRV (yieldstack));
896	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1100	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
897	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1101	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
898	SvREFCNT_dec (sv);	1102	SvREFCNT_dec (sv);
899		1103
900	transfer(aTHX_ prev, next, 0);	1104	coro_state_transfer (aTHX_ prev, next, 0);
		1105	}
901		1106
902	MODULE = Coro::State PACKAGE = Coro	1107	MODULE = Coro::State PACKAGE = Coro
903		1108
904	# this is slightly dirty (should expose a c-level api)
905
906	BOOT:	1109	BOOT:
907	{	1110	{
		1111	int i;
		1112
		1113	coro_stash = gv_stashpv ("Coro", TRUE);
		1114
		1115	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1116	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1117	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1118	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1119	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1120	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1121
908	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1122	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
909	coro_ready = newAV ();
910	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1123	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1124
		1125	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1126	coro_ready[i] = newAV ();
		1127
		1128	{
		1129	SV *sv = perl_get_sv("Coro::API", 1);
		1130
		1131	coroapi.schedule = api_schedule;
		1132	coroapi.cede = api_cede;
		1133	coroapi.ready = api_ready;
		1134	coroapi.nready = &coro_nready;
		1135	coroapi.current = coro_current;
		1136
		1137	GCoroAPI = &coroapi;
		1138	sv_setiv (sv, (IV)&coroapi);
		1139	SvREADONLY_on (sv);
		1140	}
911	}	1141	}
		1142
		1143	#if !PERL_MICRO
912		1144
913	void	1145	void
914	ready(self)	1146	ready (self)
915	SV * self	1147	SV * self
		1148	PROTOTYPE: $
916	CODE:	1149	CODE:
917	av_push (coro_ready, SvREFCNT_inc (self));	1150	api_ready (self);
		1151
		1152	#endif
		1153
		1154	int
		1155	nready (...)
		1156	PROTOTYPE:
		1157	CODE:
		1158	RETVAL = coro_nready;
		1159	OUTPUT:
		1160	RETVAL
918		1161
919	void	1162	void
920	schedule(...)	1163	schedule (...)
921	ALIAS:	1164	PROTOTYPE:
922	cede = 1
923	CODE:	1165	CODE:
924	SV *prev = GvSV (coro_current);	1166	api_schedule ();
925	SV *next = av_shift (coro_ready);
926		1167
927	if (next == &PL_sv_undef)	1168	void
928	next = SvREFCNT_inc (GvSV (coro_idle));	1169	cede (...)
		1170	PROTOTYPE:
		1171	CODE:
		1172	api_cede ();
929		1173
930	if (ix)	1174	# and these are hacks
931	av_push (coro_ready, SvREFCNT_inc (prev));	1175	SV *
		1176	_aio_get_state ()
		1177	CODE:
		1178	{
		1179	struct {
		1180	int errorno;
		1181	int laststype;
		1182	int laststatval;
		1183	Stat_t statcache;
		1184	} data;
932		1185
933	GvSV (coro_current) = SvREFCNT_inc (next);	1186	data.errorno = errno;
934	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),	1187	data.laststype = PL_laststype;
935	sv_to_coro (next, "Coro::schedule", "next coroutine"),	1188	data.laststatval = PL_laststatval;
936	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	1189	data.statcache = PL_statcache;
937	SvREFCNT_dec (next);	1190
938	SvREFCNT_dec (prev);	1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
939		1192	}
		1193	OUTPUT:
		1194	RETVAL
		1195
		1196	void
		1197	_aio_set_state (char *data_)
		1198	PROTOTYPE: $
		1199	CODE:
		1200	{
		1201	struct {
		1202	int errorno;
		1203	int laststype;
		1204	int laststatval;
		1205	Stat_t statcache;
		1206	} data = (void )data_;
		1207
		1208	errno = data->errorno;
		1209	PL_laststype = data->laststype;
		1210	PL_laststatval = data->laststatval;
		1211	PL_statcache = data->statcache;
		1212	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC vs. Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC vs.
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC