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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.25 by root, Wed Aug 15 03:24:07 2001 UTC vs.
Revision 1.81 by root, Fri Nov 3 00:56:03 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		60	#endif
21	#define MAY_FLUSH /* increases codesize */
22		61
23	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
24	#define UCORO_STATE "_coro_state"	63	#define UCORO_STATE "_coro_state"
25		64
26	/* The next macro should delcare a variable stacklevel that contains and approximation	65	/* The next macro should declare a variable stacklevel that contains and approximation
27	* to the current C stack pointer. Its property is that it changes with each call	66	* to the current C stack pointer. Its property is that it changes with each call
28	* and should be unique. */	67	* and should be unique. */
29	#define dSTACKLEVEL void *stacklevel = &stacklevel	68	#define dSTACKLEVEL void *stacklevel = &stacklevel
30		69
		70	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		71
31	#define labs(l) ((l) >= 0 ? (l) : -(l))	72	#define labs(l) ((l) >= 0 ? (l) : -(l))
32		73
33	#include "CoroAPI.h"	74	#include "CoroAPI.h"
34		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)
		80	#else
		81	# define LOCK (void)0
		82	# define UNLOCK (void)0
		83	#endif
		84
35	static struct CoroAPI coroapi;	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 */
36		91
37	/* this is actually not only the c stack but also c registers etc... */	92	/* this is actually not only the c stack but also c registers etc... */
38	typedef struct {	93	typedef struct {
39	int refcnt; /* pointer reference counter */	94	int refcnt; /* pointer reference counter */
40	int usecnt; /* shared by how many coroutines */	95	int usecnt; /* shared by how many coroutines */
66	AV *curstack;	121	AV *curstack;
67	AV *mainstack;	122	AV *mainstack;
68	SV **stack_sp;	123	SV **stack_sp;
69	OP *op;	124	OP *op;
70	SV **curpad;	125	SV **curpad;
		126	AV *comppad;
		127	CV *compcv;
71	SV **stack_base;	128	SV **stack_base;
72	SV **stack_max;	129	SV **stack_max;
73	SV **tmps_stack;	130	SV **tmps_stack;
74	I32 tmps_floor;	131	I32 tmps_floor;
75	I32 tmps_ix;	132	I32 tmps_ix;
…		…
84	I32 savestack_ix;	141	I32 savestack_ix;
85	I32 savestack_max;	142	I32 savestack_max;
86	OP **retstack;	143	OP **retstack;
87	I32 retstack_ix;	144	I32 retstack_ix;
88	I32 retstack_max;	145	I32 retstack_max;
		146	PMOP *curpm;
89	COP *curcop;	147	COP *curcop;
90	JMPENV *top_env;	148	JMPENV *top_env;
91		149
92	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
93	AV *args;	151	AV *args;
94	};	152	};
95		153
96	typedef struct coro *Coro__State;	154	typedef struct coro *Coro__State;
97	typedef struct coro *Coro__State_or_hashref;	155	typedef struct coro *Coro__State_or_hashref;
98		156
99	static AV main_mainstack; / used to differentiate between $main and others */	157	static AV *
100	static HV *coro_state_stash;	158	coro_clone_padlist (pTHX_ CV *cv)
101	static SV *ucoro_state_sv;
102	static U32 ucoro_state_hash;
103	static HV *padlist_cache;
104
105	/* mostly copied from op.c:cv_clone2 */
106	STATIC AV *
107	clone_padlist (AV *protopadlist)
108	{	159	{
109	AV *av;	160	AV *padlist = CvPADLIST (cv);
110	I32 ix;
111	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
112	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
113	SV **pname = AvARRAY (protopad_name);
114	SV **ppad = AvARRAY (protopad);
115	I32 fname = AvFILLp (protopad_name);
116	I32 fpad = AvFILLp (protopad);
117	AV newpadlist, newpad_name, *newpad;	161	AV newpadlist, newpad;
118	SV **npad;
119
120	newpad_name = newAV ();
121	for (ix = fname; ix >= 0; ix--)
122	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
123
124	newpad = newAV ();
125	av_fill (newpad, AvFILLp (protopad));
126	npad = AvARRAY (newpad);
127		162
128	newpadlist = newAV ();	163	newpadlist = newAV ();
129	AvREAL_off (newpadlist);	164	AvREAL_off (newpadlist);
130	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)));
131	av_store (newpadlist, 1, (SV *) newpad);	174	av_store (newpadlist, 1, (SV *)newpad);
132		175
133	av = newAV (); /* will be @_ */	176	return newpadlist;
134	av_extend (av, 0);	177	}
135	av_store (newpad, 0, (SV *) av);
136	AvFLAGS (av) = AVf_REIFY;
137		178
138	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))
139	{	184	{
140	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	185	I32 i = AvFILLp (padlist);
141	if (namesv && namesv != &PL_sv_undef)	186	while (i >= 0)
142	{	187	{
143	char name = SvPVX (namesv); / XXX */	188	SV **svp = av_fetch (padlist, i--, FALSE);
144	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	189	if (svp)
145	{ /* lexical from outside? */
146	npad[ix] = SvREFCNT_inc (ppad[ix]);
147	}	190	{
148	else
149	{ /* our own lexical */
150	SV *sv;	191	SV *sv;
151	if (*name == '&')	192	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
152	sv = SvREFCNT_inc (ppad[ix]);	193	SvREFCNT_dec (sv);
153	else if (*name == '@')	194
154	sv = (SV *) newAV ();	195	SvREFCNT_dec (*svp);
155	else if (*name == '%')
156	sv = (SV *) newHV ();
157	else
158	sv = NEWSV (0, 0);
159	if (!SvPADBUSY (sv))
160	SvPADMY_on (sv);
161	npad[ix] = sv;
162	}	196	}
163	}	197	}
164	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	198
165	{	199	SvREFCNT_dec ((SV*)padlist);
166	npad[ix] = SvREFCNT_inc (ppad[ix]);
167	}
168	else
169	{
170	SV *sv = NEWSV (0, 0);
171	SvPADTMP_on (sv);
172	npad[ix] = sv;
173	}
174	}	200	}
		201	}
175		202
176	#if 0 /* return -ENOTUNDERSTOOD */	203	static int
177	/* 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;
178		208
179	for (ix = fpad; ix > 0; ix--) {	209	/* casting is fun. */
180	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
181	if (namesv	211	free_padlist (aTHX_ padlist);
182	&& namesv != &PL_sv_undef	212
183	&& !(SvFLAGS(namesv) & SVf_FAKE)	213	SvREFCNT_dec (av);
184	&& *SvPVX(namesv) == '&'	214
185	&& CvCLONE(ppad[ix]))	215	return 0;
186	{	216	}
187	CV kid = cv_clone((CV)ppad[ix]);	217
188	SvREFCNT_dec(ppad[ix]);	218	#define PERL_MAGIC_coro PERL_MAGIC_ext
189	CvCLONE_on(kid);	219
190	SvPADMY_on(kid);	220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
191	npad[ix] = (SV*)kid;	221
192	}	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 ();
193	}	255	}
194	#endif
195		256
196	return newpadlist;
197	}
198
199	#ifdef MAY_FLUSH
200	STATIC AV *
201	free_padlist (AV *padlist)
202	{
203	/* may be during global destruction */
204	if (SvREFCNT(padlist))
205	{
206	I32 i = AvFILLp(padlist);
207	while (i >= 0)
208	{
209	SV **svp = av_fetch(padlist, i--, FALSE);
210	SV sv = svp ? svp : Nullsv;
211	if (sv)
212	SvREFCNT_dec(sv);
213	}
214
215	SvREFCNT_dec((SV*)padlist);
216	}
217	}
218	#endif
219
220	/* the next two functions merely cache the padlists */
221	STATIC void
222	get_padlist (CV *cv)
223	{
224	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
225
226	if (he && AvFILLp ((AV )he) >= 0)
227	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
228	else
229	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
230	}
231
232	STATIC void
233	put_padlist (CV *cv)
234	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
236
237	if (SvTYPE (*he) != SVt_PVAV)
238	{
239	SvREFCNT_dec (*he);
240	he = (SV )newAV ();
241	}
242
243	av_push ((AV )he, (SV *)CvPADLIST (cv));	257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
244	}	258	}
245
246	#ifdef MAY_FLUSH
247	STATIC void
248	flush_padlist_cache ()
249	{
250	HV *hv = padlist_cache;
251	padlist_cache = newHV ();
252
253	if (hv_iterinit (hv))
254	{
255	HE *he;
256	AV *padlist;
257
258	while (!!(he = hv_iternext (hv)))
259	{
260	AV av = (AV )HeVAL(he);
261
262	/* casting is fun. */
263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
264	free_padlist (padlist);
265	}
266	}
267
268	SvREFCNT_dec (hv);
269	}
270	#endif
271		259
272	#define SB do {	260	#define SB do {
273	#define SE } while (0)	261	#define SE } while (0)
274		262
275	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	263	#define LOAD(state) load_state(aTHX_ (state));
276	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277		265
278	#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
279		267
280	static void	268	static void
281	load_state(pTHX_ Coro__State c)	269	load_state(pTHX_ Coro__State c)
282	{	270	{
283	PL_dowarn = c->dowarn;	271	PL_dowarn = c->dowarn;
…		…
287	PL_curstack = c->curstack;	275	PL_curstack = c->curstack;
288	PL_mainstack = c->mainstack;	276	PL_mainstack = c->mainstack;
289	PL_stack_sp = c->stack_sp;	277	PL_stack_sp = c->stack_sp;
290	PL_op = c->op;	278	PL_op = c->op;
291	PL_curpad = c->curpad;	279	PL_curpad = c->curpad;
		280	PL_comppad = c->comppad;
		281	PL_compcv = c->compcv;
292	PL_stack_base = c->stack_base;	282	PL_stack_base = c->stack_base;
293	PL_stack_max = c->stack_max;	283	PL_stack_max = c->stack_max;
294	PL_tmps_stack = c->tmps_stack;	284	PL_tmps_stack = c->tmps_stack;
295	PL_tmps_floor = c->tmps_floor;	285	PL_tmps_floor = c->tmps_floor;
296	PL_tmps_ix = c->tmps_ix;	286	PL_tmps_ix = c->tmps_ix;
…		…
302	PL_scopestack_ix = c->scopestack_ix;	292	PL_scopestack_ix = c->scopestack_ix;
303	PL_scopestack_max = c->scopestack_max;	293	PL_scopestack_max = c->scopestack_max;
304	PL_savestack = c->savestack;	294	PL_savestack = c->savestack;
305	PL_savestack_ix = c->savestack_ix;	295	PL_savestack_ix = c->savestack_ix;
306	PL_savestack_max = c->savestack_max;	296	PL_savestack_max = c->savestack_max;
		297	#if PERL_VERSION < 9
307	PL_retstack = c->retstack;	298	PL_retstack = c->retstack;
308	PL_retstack_ix = c->retstack_ix;	299	PL_retstack_ix = c->retstack_ix;
309	PL_retstack_max = c->retstack_max;	300	PL_retstack_max = c->retstack_max;
		301	#endif
		302	PL_curpm = c->curpm;
310	PL_curcop = c->curcop;	303	PL_curcop = c->curcop;
311	PL_top_env = c->top_env;	304	PL_top_env = c->top_env;
312		305
313	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
314	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
323	{	316	{
324	AV padlist = (AV )POPs;	317	AV padlist = (AV )POPs;
325		318
326	if (padlist)	319	if (padlist)
327	{	320	{
328	put_padlist (cv); /* mark this padlist as available */	321	put_padlist (aTHX_ cv); /* mark this padlist as available */
329	CvPADLIST(cv) = padlist;	322	CvPADLIST(cv) = padlist;
330	#ifdef USE_THREADS
331	/CvOWNER(cv) = (struct perl_thread )POPs;*/
332	#endif
333	}	323	}
334		324
335	++CvDEPTH(cv);	325	++CvDEPTH(cv);
336	}	326	}
337		327
…		…
355		345
356	PUSHs (Nullsv);	346	PUSHs (Nullsv);
357	/* this loop was inspired by pp_caller */	347	/* this loop was inspired by pp_caller */
358	for (;;)	348	for (;;)
359	{	349	{
360	do	350	while (cxix >= 0)
361	{	351	{
362	PERL_CONTEXT *cx = &ccstk[cxix--];	352	PERL_CONTEXT *cx = &ccstk[cxix--];
363		353
364	if (CxTYPE(cx) == CXt_SUB)	354	if (CxTYPE(cx) == CXt_SUB)
365	{	355	{
366	CV *cv = cx->blk_sub.cv;	356	CV *cv = cx->blk_sub.cv;
367	if (CvDEPTH(cv))	357	if (CvDEPTH(cv))
368	{	358	{
369	#ifdef USE_THREADS
370	/XPUSHs ((SV )CvOWNER(cv));*/
371	/CvOWNER(cv) = 0;/
372	/error must unlock this cv etc.. etc.../
373	#endif
374	EXTEND (SP, CvDEPTH(cv)*2);	359	EXTEND (SP, CvDEPTH(cv)*2);
375		360
376	while (--CvDEPTH(cv))	361	while (--CvDEPTH(cv))
377	{	362	{
378	/* this tells the restore code to increment CvDEPTH */	363	/* this tells the restore code to increment CvDEPTH */
…		…
381	}	366	}
382		367
383	PUSHs ((SV *)CvPADLIST(cv));	368	PUSHs ((SV *)CvPADLIST(cv));
384	PUSHs ((SV *)cv);	369	PUSHs ((SV *)cv);
385		370
386	get_padlist (cv); /* this is a monster */	371	get_padlist (aTHX_ cv);
387	}	372	}
388	}	373	}
		374	#ifdef CXt_FORMAT
389	else if (CxTYPE(cx) == CXt_FORMAT)	375	else if (CxTYPE(cx) == CXt_FORMAT)
390	{	376	{
391	/* 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? */
392	/* my bold guess is as a simple, plain sub... */	378	/* my bold guess is as a simple, plain sub... */
393	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");
394	}	380	}
		381	#endif
395	}	382	}
396	while (cxix >= 0);
397		383
398	if (top_si->si_type == PERLSI_MAIN)	384	if (top_si->si_type == PERLSI_MAIN)
399	break;	385	break;
400		386
401	top_si = top_si->si_prev;	387	top_si = top_si->si_prev;
…		…
407	}	393	}
408		394
409	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
410	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
411	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
412
413	/* I have not the slightest idea of why av_reify is necessary */
414	/* but if it's missing the defav contents magically get replaced sometimes */
415	if (c->defav)
416	av_reify (c->defav);
417		398
418	c->dowarn = PL_dowarn;	399	c->dowarn = PL_dowarn;
419	c->in_eval = PL_in_eval;	400	c->in_eval = PL_in_eval;
420		401
421	c->curstackinfo = PL_curstackinfo;	402	c->curstackinfo = PL_curstackinfo;
422	c->curstack = PL_curstack;	403	c->curstack = PL_curstack;
423	c->mainstack = PL_mainstack;	404	c->mainstack = PL_mainstack;
424	c->stack_sp = PL_stack_sp;	405	c->stack_sp = PL_stack_sp;
425	c->op = PL_op;	406	c->op = PL_op;
426	c->curpad = PL_curpad;	407	c->curpad = PL_curpad;
		408	c->comppad = PL_comppad;
		409	c->compcv = PL_compcv;
427	c->stack_base = PL_stack_base;	410	c->stack_base = PL_stack_base;
428	c->stack_max = PL_stack_max;	411	c->stack_max = PL_stack_max;
429	c->tmps_stack = PL_tmps_stack;	412	c->tmps_stack = PL_tmps_stack;
430	c->tmps_floor = PL_tmps_floor;	413	c->tmps_floor = PL_tmps_floor;
431	c->tmps_ix = PL_tmps_ix;	414	c->tmps_ix = PL_tmps_ix;
…		…
437	c->scopestack_ix = PL_scopestack_ix;	420	c->scopestack_ix = PL_scopestack_ix;
438	c->scopestack_max = PL_scopestack_max;	421	c->scopestack_max = PL_scopestack_max;
439	c->savestack = PL_savestack;	422	c->savestack = PL_savestack;
440	c->savestack_ix = PL_savestack_ix;	423	c->savestack_ix = PL_savestack_ix;
441	c->savestack_max = PL_savestack_max;	424	c->savestack_max = PL_savestack_max;
		425	#if PERL_VERSION < 9
442	c->retstack = PL_retstack;	426	c->retstack = PL_retstack;
443	c->retstack_ix = PL_retstack_ix;	427	c->retstack_ix = PL_retstack_ix;
444	c->retstack_max = PL_retstack_max;	428	c->retstack_max = PL_retstack_max;
		429	#endif
		430	c->curpm = PL_curpm;
445	c->curcop = PL_curcop;	431	c->curcop = PL_curcop;
446	c->top_env = PL_top_env;	432	c->top_env = PL_top_env;
447	}	433	}
448		434
449	/*	435	/*
450	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
451	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
452	* on the assumption that coroutines do not usually need	438	* on the (sometimes correct) assumption that coroutines do
453	* a lot of stackspace.	439	* not usually need a lot of stackspace.
454	*/	440	*/
455	STATIC void	441	static void
456	coro_init_stacks (pTHX)	442	coro_init_stacks (pTHX)
457	{	443	{
		444	LOCK;
		445
458	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
459	PL_curstackinfo->si_type = PERLSI_MAIN;	447	PL_curstackinfo->si_type = PERLSI_MAIN;
460	PL_curstack = PL_curstackinfo->si_stack;	448	PL_curstack = PL_curstackinfo->si_stack;
461	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
462		450
…		…
471		459
472	New(54,PL_markstack,16,I32);	460	New(54,PL_markstack,16,I32);
473	PL_markstack_ptr = PL_markstack;	461	PL_markstack_ptr = PL_markstack;
474	PL_markstack_max = PL_markstack + 16;	462	PL_markstack_max = PL_markstack + 16;
475		463
		464	#ifdef SET_MARK_OFFSET
476	SET_MARK_OFFSET;	465	SET_MARK_OFFSET;
		466	#endif
477		467
478	New(54,PL_scopestack,16,I32);	468	New(54,PL_scopestack,16,I32);
479	PL_scopestack_ix = 0;	469	PL_scopestack_ix = 0;
480	PL_scopestack_max = 16;	470	PL_scopestack_max = 16;
481		471
482	New(54,PL_savestack,96,ANY);	472	New(54,PL_savestack,96,ANY);
483	PL_savestack_ix = 0;	473	PL_savestack_ix = 0;
484	PL_savestack_max = 96;	474	PL_savestack_max = 96;
485		475
		476	#if PERL_VERSION < 9
486	New(54,PL_retstack,8,OP*);	477	New(54,PL_retstack,8,OP*);
487	PL_retstack_ix = 0;	478	PL_retstack_ix = 0;
488	PL_retstack_max = 8;	479	PL_retstack_max = 8;
		480	#endif
		481
		482	UNLOCK;
489	}	483	}
490		484
491	/*	485	/*
492	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
493	* still there is a memleak of 128 bytes...
494	*/	487	*/
495	STATIC void	488	static void
496	destroy_stacks(pTHX)	489	destroy_stacks(pTHX)
497	{	490	{
		491	if (!IN_DESTRUCT)
		492	{
498	/* is this ugly, I ask? */	493	/* is this ugly, I ask? */
499	while (PL_scopestack_ix)	494	LEAVE_SCOPE (0);
500	LEAVE;
501		495
502	/* sure it is, but more important: is it correct?? :/ */	496	/* sure it is, but more important: is it correct?? :/ */
503	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
504	FREETMPS;	497	FREETMPS;
		498
		499	/POPSTACK_TO (PL_mainstack);//D//use/
		500	}
505		501
506	while (PL_curstackinfo->si_next)	502	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	503	PL_curstackinfo = PL_curstackinfo->si_next;
508		504
509	while (PL_curstackinfo)	505	while (PL_curstackinfo)
510	{	506	{
511	PERL_SI *p = PL_curstackinfo->si_prev;	507	PERL_SI *p = PL_curstackinfo->si_prev;
512		508
513	{	509	{ /D//remove/
514	dSP;	510	dSP;
515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516	PUTBACK; /* possibly superfluous */	512	PUTBACK; /* possibly superfluous */
517	}	513	}
518		514
519	if (PL_main_cv != Nullcv) /* don't during destruction. hack? */	515	if (!IN_DESTRUCT)
520	dounwind(-1);	516	{
521		517	dounwind (-1);/D//remove/
522	SvREFCNT_dec(PL_curstackinfo->si_stack);	518	SvREFCNT_dec (PL_curstackinfo->si_stack);
		519	}
		520
523	Safefree(PL_curstackinfo->si_cxstack);	521	Safefree (PL_curstackinfo->si_cxstack);
524	Safefree(PL_curstackinfo);	522	Safefree (PL_curstackinfo);
525	PL_curstackinfo = p;	523	PL_curstackinfo = p;
526	}	524	}
527		525
528	Safefree(PL_tmps_stack);	526	Safefree (PL_tmps_stack);
529	Safefree(PL_markstack);	527	Safefree (PL_markstack);
530	Safefree(PL_scopestack);	528	Safefree (PL_scopestack);
531	Safefree(PL_savestack);	529	Safefree (PL_savestack);
		530	#if PERL_VERSION < 9
532	Safefree(PL_retstack);	531	Safefree (PL_retstack);
		532	#endif
533	}	533	}
534		534
535	static void	535	static void
536	allocate_stack (Coro__State ctx, int alloc)	536	allocate_stack (Coro__State ctx, int alloc)
537	{	537	{
…		…
540	New (0, stack, 1, coro_stack);	540	New (0, stack, 1, coro_stack);
541		541
542	stack->refcnt = 1;	542	stack->refcnt = 1;
543	stack->usecnt = 1;	543	stack->usecnt = 1;
544	stack->gencnt = ctx->gencnt = 0;	544	stack->gencnt = ctx->gencnt = 0;
		545
545	if (alloc)	546	if (alloc)
546	{	547	{
547	#ifdef HAVE_MMAP	548	#if HAVE_MMAP
548	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
549	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
550	if (stack->sptr == (void *)-1)	551	if (stack->sptr != (void *)-1)
551	#endif
552	{	552	{
553	/FIXME//D//* reasonable stack size! */	553	# if STACKGUARD
		554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		555	# endif
		556	}
		557	else
		558	#endif
		559	{
554	stack->ssize = -4096 * sizeof (long);	560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
555	New (0, stack->sptr, 4096, long);	561	New (0, stack->sptr, STACKSIZE, long);
556	}	562	}
557	}	563	}
558	else	564	else
559	stack->sptr = 0;	565	stack->sptr = 0;
560		566
…		…
574	{	580	{
575	#ifdef HAVE_MMAP	581	#ifdef HAVE_MMAP
576	if (stack->ssize > 0 && stack->sptr)	582	if (stack->ssize > 0 && stack->sptr)
577	munmap (stack->sptr, stack->ssize);	583	munmap (stack->sptr, stack->ssize);
578	else	584	else
579	#else	585	#endif
580	Safefree (stack->sptr);	586	Safefree (stack->sptr);
581	#endif	587
582	Safefree (stack);	588	Safefree (stack);
583	}	589	}
584	else if (ctx->gencnt == stack->gencnt)	590	else if (ctx->gencnt == stack->gencnt)
585	--stack->usecnt;	591	--stack->usecnt;
586	}	592	}
…		…
590	setup_coro (void *arg)	596	setup_coro (void *arg)
591	{	597	{
592	/*	598	/*
593	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
594	*/	600	*/
		601	dTHX;
595	dSP;	602	dSP;
596	Coro__State ctx = (Coro__State)arg;	603	Coro__State ctx = (Coro__State)arg;
597	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
598		605
599	coro_init_stacks (aTHX);	606	coro_init_stacks (aTHX);
600	/PL_curcop = 0;/	607	/PL_curcop = 0;/
601	/PL_in_eval = PL_in_eval;/ /* inherit */	608	/PL_in_eval = PL_in_eval;/ /* inherit */
602	SvREFCNT_dec (GvAV (PL_defgv));	609	SvREFCNT_dec (GvAV (PL_defgv));
603	GvAV (PL_defgv) = ctx->args;	610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
604		611
605	SPAGAIN;	612	SPAGAIN;
606		613
607	if (ctx->stack)	614	if (ctx->stack)
608	{	615	{
…		…
619	}	626	}
620	else	627	else
621	{	628	{
622	UNOP myop;	629	UNOP myop;
623		630
624	PL_op = (OP *)&myop;
625
626	Zero(&myop, 1, UNOP);	631	Zero(&myop, 1, UNOP);
627	myop.op_next = Nullop;	632	myop.op_next = Nullop;
628	myop.op_flags = OPf_WANT_VOID;	633	myop.op_flags = OPf_WANT_VOID;
		634
		635	PL_op = (OP *)&myop;
629		636
630	PUSHMARK(SP);	637	PUSHMARK(SP);
631	XPUSHs (sub_init);	638	XPUSHs (sub_init);
632	/*	639	/*
633	* the next line is slightly wrong, as PL_op->op_next	640	* the next line is slightly wrong, as PL_op->op_next
…		…
635	* that doesn't matter, though, since it is only	642	* that doesn't matter, though, since it is only
636	* pp_nextstate and we never return...	643	* pp_nextstate and we never return...
637	* ah yes, and I don't care anyways ;)	644	* ah yes, and I don't care anyways ;)
638	*/	645	*/
639	PUTBACK;	646	PUTBACK;
640	PL_op = pp_entersub();	647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
641	SPAGAIN;	648	SPAGAIN;
642		649
643	ENTER; /* necessary e.g. for dounwind */	650	ENTER; /* necessary e.g. for dounwind */
644	}	651	}
645	}	652	}
…		…
648	continue_coro (void *arg)	655	continue_coro (void *arg)
649	{	656	{
650	/*	657	/*
651	* this is a _very_ stripped down perl interpreter ;)	658	* this is a _very_ stripped down perl interpreter ;)
652	*/	659	*/
		660	dTHX;
653	Coro__State ctx = (Coro__State)arg;	661	Coro__State ctx = (Coro__State)arg;
654		662
655	/FIXME//* must set up top_env here */	663	PL_top_env = &PL_start_env;
		664
656	ctx->cursp = 0;	665	ctx->cursp = 0;
657	PL_op = PL_op->op_next;	666	PL_op = PL_op->op_next;
658	CALLRUNOPS(aTHX);	667	CALLRUNOPS(aTHX);
659		668
660	abort ();	669	abort ();
661	}	670	}
662		671
663	STATIC void	672	static void
664	transfer(pTHX_ struct coro prev, struct coro next, int flags)	673	transfer (pTHX_ struct coro prev, struct coro next, int flags)
665	{	674	{
666	dSP;
667	dSTACKLEVEL;	675	dSTACKLEVEL;
668		676
669	if (prev != next)	677	if (prev != next)
670	{	678	{
		679	/* has this coro been created yet? */
671	if (next->mainstack)	680	if (next->mainstack)
672	{	681	{
		682	LOCK;
673	SAVE (prev, flags);	683	SAVE (prev, flags);
674	LOAD (next);	684	LOAD (next);
		685	UNLOCK;
675		686
676	/* mark this state as in-use */	687	/* mark this state as in-use */
677	next->mainstack = 0;	688	next->mainstack = 0;
678	next->tmps_ix = -2;	689	next->tmps_ix = -2;
679		690
…		…
698	continue_coro, (void *)next,	709	continue_coro, (void *)next,
699	next->stack->sptr, labs (next->stack->ssize));	710	next->stack->sptr, labs (next->stack->ssize));
700	}	711	}
701		712
702	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	713	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		714	prev->cursp = stacklevel;
		715	/* don't add any code here */
703	}	716	}
704		717	else
		718	next->cursp = stacklevel;
705	}	719	}
706	else if (next->tmps_ix == -2)	720	else if (next->tmps_ix == -2)
707	croak ("tried to transfer to running coroutine");	721	croak ("tried to transfer to running coroutine");
708	else	722	else
709	{	723	{
		724	LOCK;
710	SAVE (prev, -1); /* first get rid of the old state */	725	SAVE (prev, -1); /* first get rid of the old state */
		726	UNLOCK;
711		727
		728	/* create the coroutine for the first time */
712	if (flags & TRANSFER_SAVE_CCTXT)	729	if (flags & TRANSFER_SAVE_CCTXT)
713	{	730	{
714	if (!prev->stack)	731	if (!prev->stack)
715	allocate_stack (prev, 0);	732	allocate_stack (prev, 0);
716		733
		734	/* the new coroutine starts with start_env again */
		735	PL_top_env = &PL_start_env;
		736
717	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	737	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
718	{	738	{
719	setup_coro (next);	739	setup_coro (next);
		740	next->cursp = stacklevel;
720		741
721	prev->stack->refcnt++;	742	prev->stack->refcnt++;
722	prev->stack->usecnt++;	743	prev->stack->usecnt++;
723	next->stack = prev->stack;	744	next->stack = prev->stack;
724	next->gencnt = prev->gencnt;	745	next->gencnt = prev->gencnt;
725	}	746	}
726	else	747	else
727	{	748	{
		749	assert (!next->stack);
728	allocate_stack (next, 1);	750	allocate_stack (next, 1);
729	coro_create (&(next->stack->cctx),	751	coro_create (&(next->stack->cctx),
730	setup_coro, (void *)next,	752	setup_coro, (void *)next,
731	next->stack->sptr, labs (next->stack->ssize));	753	next->stack->sptr, labs (next->stack->ssize));
732	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		755	prev->cursp = stacklevel;
		756	/* don't add any code here */
733	}	757	}
734	}	758	}
735	else	759	else
		760	{
736	setup_coro (next);	761	setup_coro (next);
		762	next->cursp = stacklevel;
		763	}
737	}	764	}
738	}	765	}
739		766
740	next->cursp = stacklevel;	767	LOCK;
741	}	768	if (coro_mortal)
742
743	static struct coro *
744	sv_to_coro (SV arg, const char funcname, const char *varname)
745	{
746	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
747	{	769	{
748	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	770	SvREFCNT_dec (coro_mortal);
749		771	coro_mortal = 0;
750	if (!he)
751	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
752
753	arg = HeVAL(he);
754	}	772	}
755		773	UNLOCK;
		774	}
		775
		776	#define SV_CORO(sv,func) \
		777	do { \
		778	if (SvROK (sv)) \
		779	sv = SvRV (sv); \
		780	\
		781	if (SvTYPE (sv) == SVt_PVHV) \
		782	{ \
		783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		784	\
		785	if (!he) \
		786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		787	\
		788	(sv) = SvRV (HeVAL(he)); \
		789	} \
		790	\
756	/* must also be changed inside Coro::Cont::yield */	791	/* must also be changed inside Coro::Cont::yield */ \
757	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
758	return (struct coro ) SvIV((SV)SvRV(arg));
759	else
760	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
761	}	794	\
		795	} while(0)
		796
		797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
762		798
763	static void	799	static void
764	api_transfer(pTHX_ SV prev, SV next, int flags)	800	api_transfer(pTHX_ SV prev, SV next, int flags)
765	{	801	{
766	transfer(aTHX_ sv_to_coro (prev, "Coro::transfer", "prev"),	802	SV_CORO (prev, "Coro::transfer");
767	sv_to_coro (next, "Coro::transfer", "next"),	803	SV_CORO (next, "Coro::transfer");
768	flags);	804
		805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
769	}	806	}
770		807
771	/ Coro ******************************************************************/	808	/ Coro ******************************************************************/
772		809
773	#define PRIO_MAX 3	810	#define PRIO_MAX 3
…		…
781	static GV coro_current, coro_idle;	818	static GV coro_current, coro_idle;
782	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
783	static int coro_nready;	820	static int coro_nready;
784		821
785	static void	822	static void
786	coro_enq (SV *sv)	823	coro_enq (pTHX_ SV *sv)
787	{	824	{
788	if (SvROK (sv))	825	SV **xprio;
789	{	826	int prio;
790	SV *hv = SvRV (sv);	827
791	if (SvTYPE (hv) == SVt_PVHV)	828	if (SvTYPE (sv) != SVt_PVHV)
792	{
793	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);
794	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
795
796	prio = prio > PRIO_MAX ? PRIO_MAX
797	: prio < PRIO_MIN ? PRIO_MIN
798	: prio;
799
800	av_push (coro_ready [prio - PRIO_MIN], sv);
801	coro_nready++;
802
803	return;
804	}
805	}
806
807	croak ("Coro::ready tried to enqueue something that is not a coroutine");	829	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		830
		831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
		832	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		833
		834	prio = prio > PRIO_MAX ? PRIO_MAX
		835	: prio < PRIO_MIN ? PRIO_MIN
		836	: prio;
		837
		838	av_push (coro_ready [prio - PRIO_MIN], sv);
		839	coro_nready++;
808	}	840	}
809		841
810	static SV *	842	static SV *
811	coro_deq (int min_prio)	843	coro_deq (pTHX_ int min_prio)
812	{	844	{
813	int prio = PRIO_MAX - PRIO_MIN;	845	int prio = PRIO_MAX - PRIO_MIN;
814		846
815	min_prio -= PRIO_MIN;	847	min_prio -= PRIO_MIN;
816	if (min_prio < 0)	848	if (min_prio < 0)
…		…
827	}	859	}
828		860
829	static void	861	static void
830	api_ready (SV *coro)	862	api_ready (SV *coro)
831	{	863	{
		864	dTHX;
		865
		866	if (SvROK (coro))
		867	coro = SvRV (coro);
		868
		869	LOCK;
832	coro_enq (SvREFCNT_inc (coro));	870	coro_enq (aTHX_ SvREFCNT_inc (coro));
		871	UNLOCK;
833	}	872	}
834		873
835	static void	874	static void
836	api_schedule (int cede)	875	api_schedule (void)
837	{	876	{
		877	dTHX;
		878
838	SV prev, next;	879	SV prev, next;
839		880
		881	LOCK;
		882
840	prev = GvSV (coro_current);	883	prev = SvRV (GvSV (coro_current));
841
842	if (cede)
843	coro_enq (SvREFCNT_inc (prev));
844
845	next = coro_deq (PRIO_MIN);	884	next = coro_deq (aTHX_ PRIO_MIN);
846		885
847	if (!next)	886	if (!next)
848	next = SvREFCNT_inc (GvSV (coro_idle));	887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
849		888
850	GvSV (coro_current) = SvREFCNT_inc (next);	889	/* free this only after the transfer */
851	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),	890	coro_mortal = prev;
852	sv_to_coro (next, "Coro::schedule", "next coroutine"),	891	SV_CORO (prev, "Coro::schedule");
		892
		893	SvRV (GvSV (coro_current)) = next;
		894
		895	SV_CORO (next, "Coro::schedule");
		896
		897	UNLOCK;
		898
		899	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
853	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
854	SvREFCNT_dec (next);	901	}
855	SvREFCNT_dec (prev);	902
		903	static void
		904	api_cede (void)
		905	{
		906	dTHX;
		907
		908	LOCK;
		909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		910	UNLOCK;
		911
		912	api_schedule ();
856	}	913	}
857		914
858	MODULE = Coro::State PACKAGE = Coro::State	915	MODULE = Coro::State PACKAGE = Coro::State
859		916
860	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
861		918
862	BOOT:	919	BOOT:
863	{ /* {} necessary for stoopid perl-5.6.x */	920	{ /* {} necessary for stoopid perl-5.6.x */
		921	#ifdef USE_ITHREADS
		922	MUTEX_INIT (&coro_mutex);
		923	#endif
		924	BOOT_PAGESIZE;
		925
864	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
865	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
866	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
867		929
868	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
869	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
870	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
871	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
872		934
873	if (!padlist_cache)
874	padlist_cache = newHV ();
875
876	main_mainstack = PL_mainstack;	935	main_mainstack = PL_mainstack;
877		936
878	{
879	SV *sv = perl_get_sv("Coro::API", 1);
880
881	coroapi.ver = CORO_API_VERSION - 1;	937	coroapi.ver = CORO_API_VERSION;
882	coroapi.transfer = api_transfer;	938	coroapi.transfer = api_transfer;
883	coroapi.schedule = api_schedule;
884	coroapi.ready = api_ready;
885	coroapi.nready = &coro_nready;
886
887	GCoroAPI = &coroapi;
888	sv_setiv(sv, (IV)&coroapi);
889	SvREADONLY_on(sv);
890	}
891	}	939	}
892		940
893	Coro::State	941	Coro::State
894	_newprocess(args)	942	_newprocess(args)
895	SV * args	943	SV * args
…		…
898	Coro__State coro;	946	Coro__State coro;
899		947
900	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
901	croak ("Coro::State::_newprocess expects an arrayref");	949	croak ("Coro::State::_newprocess expects an arrayref");
902		950
903	New (0, coro, 1, struct coro);	951	Newz (0, coro, 1, struct coro);
904		952
905	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
906	coro->mainstack = 0; /* actual work is done inside transfer */	954	/coro->mainstack = 0; //actual work is done inside transfer /
907	coro->stack = 0;	955	/coro->stack = 0;/
908		956
909	RETVAL = coro;	957	RETVAL = coro;
910	OUTPUT:	958	OUTPUT:
911	RETVAL	959	RETVAL
912		960
913	void	961	void
914	transfer(prev, next, flags)	962	transfer(prev, next, flags)
915	Coro::State_or_hashref prev	963	SV *prev
916	Coro::State_or_hashref next	964	SV *next
917	int flags	965	int flags
918	PROTOTYPE: @	966	PROTOTYPE: @
919	CODE:	967	CODE:
920	PUTBACK;	968	PUTBACK;
		969	SV_CORO (next, "Coro::transfer");
		970	SV_CORO (prev, "Coro::transfer");
921	transfer (aTHX_ prev, next, flags);	971	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
922	SPAGAIN;	972	SPAGAIN;
923		973
924	void	974	void
925	DESTROY(coro)	975	DESTROY(coro)
926	Coro::State coro	976	Coro::State coro
…		…
928		978
929	if (coro->mainstack && coro->mainstack != main_mainstack)	979	if (coro->mainstack && coro->mainstack != main_mainstack)
930	{	980	{
931	struct coro temp;	981	struct coro temp;
932		982
		983	PUTBACK;
933	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	984	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
934	LOAD(aTHX_ coro);	985	LOAD (aTHX_ coro);
		986	SPAGAIN;
935		987
936	destroy_stacks (aTHX);	988	destroy_stacks (aTHX);
937		989
938	LOAD((&temp)); /* this will get rid of defsv etc.. */	990	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		991	SPAGAIN;
939		992
940	coro->mainstack = 0;	993	coro->mainstack = 0;
941	}	994	}
942		995
943	deallocate_stack (coro);	996	deallocate_stack (coro);
944		997	SvREFCNT_dec (coro->args);
945	Safefree (coro);	998	Safefree (coro);
946
947	void
948	flush()
949	CODE:
950	#ifdef MAY_FLUSH
951	flush_padlist_cache ();
952	#endif
953		999
954	void	1000	void
955	_exit(code)	1001	_exit(code)
956	int code	1002	int code
957	PROTOTYPE: $	1003	PROTOTYPE: $
958	CODE:	1004	CODE:
959	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
960	_exit (code);	1005	_exit (code);
961	#else
962	signal (SIGTERM, SIG_DFL);
963	raise (SIGTERM);
964	exit (code);
965	#endif
966		1006
967	MODULE = Coro::State PACKAGE = Coro::Cont	1007	MODULE = Coro::State PACKAGE = Coro::Cont
968
969	# this is slightly dirty (should expose a c-level api)
970		1008
971	void	1009	void
972	yield(...)	1010	yield(...)
973	PROTOTYPE: @	1011	PROTOTYPE: @
974	CODE:	1012	CODE:
975	static SV *returnstk;	1013	SV *yieldstack;
976	SV *sv;	1014	SV *sv;
977	AV *defav = GvAV (PL_defgv);	1015	AV *defav = GvAV (PL_defgv);
978	struct coro prev, next;	1016	struct coro prev, next;
979		1017
980	if (!returnstk)	1018	yieldstack = *hv_fetch (
981	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1019	(HV *)SvRV (GvSV (coro_current)),
		1020	"yieldstack", sizeof ("yieldstack") - 1,
		1021	0
		1022	);
982		1023
983	/* set up @_ -- ugly */	1024	/* set up @_ -- ugly */
984	av_clear (defav);	1025	av_clear (defav);
985	av_fill (defav, items - 1);	1026	av_fill (defav, items - 1);
986	while (items--)	1027	while (items--)
987	av_store (defav, items, SvREFCNT_inc (ST(items)));	1028	av_store (defav, items, SvREFCNT_inc (ST(items)));
988		1029
989	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
990	sv = av_pop ((AV *)SvRV (returnstk));	1030	sv = av_pop ((AV *)SvRV (yieldstack));
991	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1031	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
992	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1032	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
993	SvREFCNT_dec (sv);	1033	SvREFCNT_dec (sv);
994		1034
995	transfer(aTHX_ prev, next, 0);	1035	transfer (aTHX_ prev, next, 0);
996		1036
997	MODULE = Coro::State PACKAGE = Coro	1037	MODULE = Coro::State PACKAGE = Coro
998
999	# this is slightly dirty (should expose a c-level api)
1000		1038
1001	BOOT:	1039	BOOT:
1002	{	1040	{
1003	int i;	1041	int i;
1004	HV *stash = gv_stashpv ("Coro", TRUE);	1042	HV *stash = gv_stashpv ("Coro", TRUE);
…		…
1013	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1051	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1014	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1052	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1015		1053
1016	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1017	coro_ready[i] = newAV ();	1055	coro_ready[i] = newAV ();
		1056
		1057	{
		1058	SV *sv = perl_get_sv("Coro::API", 1);
		1059
		1060	coroapi.schedule = api_schedule;
		1061	coroapi.cede = api_cede;
		1062	coroapi.ready = api_ready;
		1063	coroapi.nready = &coro_nready;
		1064	coroapi.current = coro_current;
		1065
		1066	GCoroAPI = &coroapi;
		1067	sv_setiv (sv, (IV)&coroapi);
		1068	SvREADONLY_on (sv);
		1069	}
1018	}	1070	}
		1071
		1072	#if !PERL_MICRO
1019		1073
1020	void	1074	void
1021	ready(self)	1075	ready(self)
1022	SV * self	1076	SV * self
		1077	PROTOTYPE: $
1023	CODE:	1078	CODE:
1024	api_ready (self);	1079	api_ready (self);
		1080
		1081	#endif
1025		1082
1026	int	1083	int
1027	nready(...)	1084	nready(...)
1028	PROTOTYPE:	1085	PROTOTYPE:
1029	CODE:	1086	CODE:
…		…
1032	RETVAL	1089	RETVAL
1033		1090
1034	void	1091	void
1035	schedule(...)	1092	schedule(...)
1036	PROTOTYPE:	1093	PROTOTYPE:
1037	ALIAS:
1038	cede = 1
1039	CODE:	1094	CODE:
1040	api_schedule (ix);	1095	api_schedule ();
1041		1096
		1097	void
		1098	cede(...)
		1099	PROTOTYPE:
		1100	CODE:
		1101	api_cede ();
		1102
		1103	# and these are hacks
		1104	SV *
		1105	_aio_get_state ()
		1106	CODE:
		1107	{
		1108	struct {
		1109	int errorno;
		1110	int laststype;
		1111	int laststatval;
		1112	Stat_t statcache;
		1113	} data;
		1114
		1115	data.errorno = errno;
		1116	data.laststype = PL_laststype;
		1117	data.laststatval = PL_laststatval;
		1118	data.statcache = PL_statcache;
		1119
		1120	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1121	}
		1122	OUTPUT:
		1123	RETVAL
		1124
		1125	void
		1126	_aio_set_state (char *data_)
		1127	PROTOTYPE: $
		1128	CODE:
		1129	{
		1130	struct {
		1131	int errorno;
		1132	int laststype;
		1133	int laststatval;
		1134	Stat_t statcache;
		1135	} data = (void )data_;
		1136
		1137	errno = data->errorno;
		1138	PL_laststype = data->laststype;
		1139	PL_laststatval = data->laststatval;
		1140	PL_statcache = data->statcache;
		1141	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.25 by root, Wed Aug 15 03:24:07 2001 UTC vs. Revision 1.81 by root, Fri Nov 3 00:56:03 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.25 by root, Wed Aug 15 03:24:07 2001 UTC vs.
Revision 1.81 by root, Fri Nov 3 00:56:03 2006 UTC