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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.30 by root, Sat Aug 25 22:19:05 2001 UTC vs.
Revision 1.84 by root, Fri Nov 24 00:31:21 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 and is rarely used */
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 declare 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 void
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) load_state(aTHX_ (state));	263	#define LOAD(state) load_state(aTHX_ (state));
276	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	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
…		…
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		383
397	if (top_si->si_type == PERLSI_MAIN)	384	if (top_si->si_type == PERLSI_MAIN)
398	break;	385	break;
399		386
…		…
416	c->curstack = PL_curstack;	403	c->curstack = PL_curstack;
417	c->mainstack = PL_mainstack;	404	c->mainstack = PL_mainstack;
418	c->stack_sp = PL_stack_sp;	405	c->stack_sp = PL_stack_sp;
419	c->op = PL_op;	406	c->op = PL_op;
420	c->curpad = PL_curpad;	407	c->curpad = PL_curpad;
		408	c->comppad = PL_comppad;
		409	c->compcv = PL_compcv;
421	c->stack_base = PL_stack_base;	410	c->stack_base = PL_stack_base;
422	c->stack_max = PL_stack_max;	411	c->stack_max = PL_stack_max;
423	c->tmps_stack = PL_tmps_stack;	412	c->tmps_stack = PL_tmps_stack;
424	c->tmps_floor = PL_tmps_floor;	413	c->tmps_floor = PL_tmps_floor;
425	c->tmps_ix = PL_tmps_ix;	414	c->tmps_ix = PL_tmps_ix;
…		…
431	c->scopestack_ix = PL_scopestack_ix;	420	c->scopestack_ix = PL_scopestack_ix;
432	c->scopestack_max = PL_scopestack_max;	421	c->scopestack_max = PL_scopestack_max;
433	c->savestack = PL_savestack;	422	c->savestack = PL_savestack;
434	c->savestack_ix = PL_savestack_ix;	423	c->savestack_ix = PL_savestack_ix;
435	c->savestack_max = PL_savestack_max;	424	c->savestack_max = PL_savestack_max;
		425	#if PERL_VERSION < 9
436	c->retstack = PL_retstack;	426	c->retstack = PL_retstack;
437	c->retstack_ix = PL_retstack_ix;	427	c->retstack_ix = PL_retstack_ix;
438	c->retstack_max = PL_retstack_max;	428	c->retstack_max = PL_retstack_max;
		429	#endif
		430	c->curpm = PL_curpm;
439	c->curcop = PL_curcop;	431	c->curcop = PL_curcop;
440	c->top_env = PL_top_env;	432	c->top_env = PL_top_env;
441	}	433	}
442		434
443	/*	435	/*
444	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
445	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
446	* on the assumption that coroutines do not usually need	438	* on the (sometimes correct) assumption that coroutines do
447	* a lot of stackspace.	439	* not usually need a lot of stackspace.
448	*/	440	*/
449	STATIC void	441	static void
450	coro_init_stacks (pTHX)	442	coro_init_stacks (pTHX)
451	{	443	{
		444	LOCK;
		445
452	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
453	PL_curstackinfo->si_type = PERLSI_MAIN;	447	PL_curstackinfo->si_type = PERLSI_MAIN;
454	PL_curstack = PL_curstackinfo->si_stack;	448	PL_curstack = PL_curstackinfo->si_stack;
455	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
456		450
…		…
465		459
466	New(54,PL_markstack,16,I32);	460	New(54,PL_markstack,16,I32);
467	PL_markstack_ptr = PL_markstack;	461	PL_markstack_ptr = PL_markstack;
468	PL_markstack_max = PL_markstack + 16;	462	PL_markstack_max = PL_markstack + 16;
469		463
		464	#ifdef SET_MARK_OFFSET
470	SET_MARK_OFFSET;	465	SET_MARK_OFFSET;
		466	#endif
471		467
472	New(54,PL_scopestack,16,I32);	468	New(54,PL_scopestack,16,I32);
473	PL_scopestack_ix = 0;	469	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	470	PL_scopestack_max = 16;
475		471
476	New(54,PL_savestack,96,ANY);	472	New(54,PL_savestack,96,ANY);
477	PL_savestack_ix = 0;	473	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	474	PL_savestack_max = 96;
479		475
		476	#if PERL_VERSION < 9
480	New(54,PL_retstack,8,OP*);	477	New(54,PL_retstack,8,OP*);
481	PL_retstack_ix = 0;	478	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	479	PL_retstack_max = 8;
		480	#endif
		481
		482	UNLOCK;
483	}	483	}
484		484
485	/*	485	/*
486	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
487	* still there is a memleak of 128 bytes...
488	*/	487	*/
489	STATIC void	488	static void
490	destroy_stacks(pTHX)	489	destroy_stacks(pTHX)
491	{	490	{
		491	if (!IN_DESTRUCT)
		492	{
492	/* is this ugly, I ask? */	493	/* is this ugly, I ask? */
493	while (PL_scopestack_ix)	494	LEAVE_SCOPE (0);
494	LEAVE;
495		495
496	/* sure it is, but more important: is it correct?? :/ */	496	/* sure it is, but more important: is it correct?? :/ */
497	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
498	FREETMPS;	497	FREETMPS;
		498
		499	/POPSTACK_TO (PL_mainstack);//D//use/
		500	}
499		501
500	while (PL_curstackinfo->si_next)	502	while (PL_curstackinfo->si_next)
501	PL_curstackinfo = PL_curstackinfo->si_next;	503	PL_curstackinfo = PL_curstackinfo->si_next;
502		504
503	while (PL_curstackinfo)	505	while (PL_curstackinfo)
504	{	506	{
505	PERL_SI *p = PL_curstackinfo->si_prev;	507	PERL_SI *p = PL_curstackinfo->si_prev;
506		508
507	{	509	{ /D//remove/
508	dSP;	510	dSP;
509	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
510	PUTBACK; /* possibly superfluous */	512	PUTBACK; /* possibly superfluous */
511	}	513	}
512		514
513	if (PL_main_cv != Nullcv) /* don't during destruction. hack? */	515	if (!IN_DESTRUCT)
514	dounwind(-1);	516	{
515		517	dounwind (-1);/D//remove/
516	SvREFCNT_dec(PL_curstackinfo->si_stack);	518	SvREFCNT_dec (PL_curstackinfo->si_stack);
		519	}
		520
517	Safefree(PL_curstackinfo->si_cxstack);	521	Safefree (PL_curstackinfo->si_cxstack);
518	Safefree(PL_curstackinfo);	522	Safefree (PL_curstackinfo);
519	PL_curstackinfo = p;	523	PL_curstackinfo = p;
520	}	524	}
521		525
522	Safefree(PL_tmps_stack);	526	Safefree (PL_tmps_stack);
523	Safefree(PL_markstack);	527	Safefree (PL_markstack);
524	Safefree(PL_scopestack);	528	Safefree (PL_scopestack);
525	Safefree(PL_savestack);	529	Safefree (PL_savestack);
		530	#if PERL_VERSION < 9
526	Safefree(PL_retstack);	531	Safefree (PL_retstack);
		532	#endif
527	}	533	}
528		534
529	static void	535	static void
530	allocate_stack (Coro__State ctx, int alloc)	536	allocate_stack (Coro__State ctx, int alloc)
531	{	537	{
…		…
534	New (0, stack, 1, coro_stack);	540	New (0, stack, 1, coro_stack);
535		541
536	stack->refcnt = 1;	542	stack->refcnt = 1;
537	stack->usecnt = 1;	543	stack->usecnt = 1;
538	stack->gencnt = ctx->gencnt = 0;	544	stack->gencnt = ctx->gencnt = 0;
		545
539	if (alloc)	546	if (alloc)
540	{	547	{
541	#ifdef HAVE_MMAP	548	#if HAVE_MMAP
542	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 */
543	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);
544	if (stack->sptr == (void *)-1)	551	if (stack->sptr != (void *)-1)
545	#endif
546	{	552	{
547	/FIXME//D//* reasonable stack size! */	553	# if STACKGUARD
		554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		555	# endif
		556	}
		557	else
		558	#endif
		559	{
548	stack->ssize = -4096 * sizeof (long);	560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
549	New (0, stack->sptr, 4096, long);	561	New (0, stack->sptr, STACKSIZE, long);
550	}	562	}
551	}	563	}
552	else	564	else
553	stack->sptr = 0;	565	stack->sptr = 0;
554		566
…		…
568	{	580	{
569	#ifdef HAVE_MMAP	581	#ifdef HAVE_MMAP
570	if (stack->ssize > 0 && stack->sptr)	582	if (stack->ssize > 0 && stack->sptr)
571	munmap (stack->sptr, stack->ssize);	583	munmap (stack->sptr, stack->ssize);
572	else	584	else
573	#else	585	#endif
574	Safefree (stack->sptr);	586	Safefree (stack->sptr);
575	#endif	587
576	Safefree (stack);	588	Safefree (stack);
577	}	589	}
578	else if (ctx->gencnt == stack->gencnt)	590	else if (ctx->gencnt == stack->gencnt)
579	--stack->usecnt;	591	--stack->usecnt;
580	}	592	}
…		…
584	setup_coro (void *arg)	596	setup_coro (void *arg)
585	{	597	{
586	/*	598	/*
587	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
588	*/	600	*/
		601	dTHX;
589	dSP;	602	dSP;
590	Coro__State ctx = (Coro__State)arg;	603	Coro__State ctx = (Coro__State)arg;
591	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
592		605
593	coro_init_stacks (aTHX);	606	coro_init_stacks (aTHX);
594	/PL_curcop = 0;/	607	/PL_curcop = 0;/
595	/PL_in_eval = PL_in_eval;/ /* inherit */	608	/PL_in_eval = PL_in_eval;/ /* inherit */
596	SvREFCNT_dec (GvAV (PL_defgv));	609	SvREFCNT_dec (GvAV (PL_defgv));
597	GvAV (PL_defgv) = ctx->args;	610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
598		611
599	SPAGAIN;	612	SPAGAIN;
600		613
601	if (ctx->stack)	614	if (ctx->stack)
602	{	615	{
…		…
613	}	626	}
614	else	627	else
615	{	628	{
616	UNOP myop;	629	UNOP myop;
617		630
618	PL_op = (OP *)&myop;
619
620	Zero(&myop, 1, UNOP);	631	Zero(&myop, 1, UNOP);
621	myop.op_next = Nullop;	632	myop.op_next = Nullop;
622	myop.op_flags = OPf_WANT_VOID;	633	myop.op_flags = OPf_WANT_VOID;
		634
		635	PL_op = (OP *)&myop;
623		636
624	PUSHMARK(SP);	637	PUSHMARK(SP);
625	XPUSHs (sub_init);	638	XPUSHs (sub_init);
626	/*	639	/*
627	* the next line is slightly wrong, as PL_op->op_next	640	* the next line is slightly wrong, as PL_op->op_next
…		…
629	* that doesn't matter, though, since it is only	642	* that doesn't matter, though, since it is only
630	* pp_nextstate and we never return...	643	* pp_nextstate and we never return...
631	* ah yes, and I don't care anyways ;)	644	* ah yes, and I don't care anyways ;)
632	*/	645	*/
633	PUTBACK;	646	PUTBACK;
634	PL_op = pp_entersub();	647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
635	SPAGAIN;	648	SPAGAIN;
636		649
637	ENTER; /* necessary e.g. for dounwind */	650	ENTER; /* necessary e.g. for dounwind */
638	}	651	}
639	}	652	}
…		…
642	continue_coro (void *arg)	655	continue_coro (void *arg)
643	{	656	{
644	/*	657	/*
645	* this is a _very_ stripped down perl interpreter ;)	658	* this is a _very_ stripped down perl interpreter ;)
646	*/	659	*/
		660	dTHX;
647	Coro__State ctx = (Coro__State)arg;	661	Coro__State ctx = (Coro__State)arg;
648		662
649	/FIXME//* must set up top_env here */	663	PL_top_env = &PL_start_env;
		664
650	ctx->cursp = 0;	665	ctx->cursp = 0;
651	PL_op = PL_op->op_next;	666	PL_op = PL_op->op_next;
652	CALLRUNOPS(aTHX);	667	CALLRUNOPS(aTHX);
653		668
654	abort ();	669	abort ();
655	}	670	}
656		671
657	STATIC void	672	/* never call directly, always through the coro_state_transfer global variable */
		673	static void
658	transfer(pTHX_ struct coro prev, struct coro next, int flags)	674	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
659	{	675	{
660	dSTACKLEVEL;	676	dSTACKLEVEL;
661	static struct coro *xnext;
662		677
663	if (prev != next)	678	if (prev != next)
664	{	679	{
665	xnext = next;	680	/* has this coro been created yet? */
666
667	if (next->mainstack)	681	if (next->mainstack)
668	{	682	{
		683	LOCK;
669	SAVE (prev, flags);	684	SAVE (prev, flags);
670	LOAD (next);	685	LOAD (next);
		686	UNLOCK;
671		687
672	/* mark this state as in-use */	688	/* mark this state as in-use */
673	next->mainstack = 0;	689	next->mainstack = 0;
674	next->tmps_ix = -2;	690	next->tmps_ix = -2;
675		691
…		…
694	continue_coro, (void *)next,	710	continue_coro, (void *)next,
695	next->stack->sptr, labs (next->stack->ssize));	711	next->stack->sptr, labs (next->stack->ssize));
696	}	712	}
697		713
698	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	714	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		715	prev->cursp = stacklevel;
699	/* don't add any code here */	716	/* don't add any code here */
700	}	717	}
701		718	else
		719	next->cursp = stacklevel;
702	}	720	}
703	else if (next->tmps_ix == -2)	721	else if (next->tmps_ix == -2)
704	croak ("tried to transfer to running coroutine");	722	croak ("tried to transfer to running coroutine");
705	else	723	else
706	{	724	{
		725	LOCK;
707	SAVE (prev, -1); /* first get rid of the old state */	726	SAVE (prev, -1); /* first get rid of the old state */
		727	UNLOCK;
708		728
		729	/* create the coroutine for the first time */
709	if (flags & TRANSFER_SAVE_CCTXT)	730	if (flags & TRANSFER_SAVE_CCTXT)
710	{	731	{
711	if (!prev->stack)	732	if (!prev->stack)
712	allocate_stack (prev, 0);	733	allocate_stack (prev, 0);
713		734
		735	/* the new coroutine starts with start_env again */
		736	PL_top_env = &PL_start_env;
		737
714	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	738	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
715	{	739	{
716	setup_coro (next);	740	setup_coro (next);
		741	next->cursp = stacklevel;
717		742
718	prev->stack->refcnt++;	743	prev->stack->refcnt++;
719	prev->stack->usecnt++;	744	prev->stack->usecnt++;
720	next->stack = prev->stack;	745	next->stack = prev->stack;
721	next->gencnt = prev->gencnt;	746	next->gencnt = prev->gencnt;
722	}	747	}
723	else	748	else
724	{	749	{
		750	assert (!next->stack);
725	allocate_stack (next, 1);	751	allocate_stack (next, 1);
726	coro_create (&(next->stack->cctx),	752	coro_create (&(next->stack->cctx),
727	setup_coro, (void *)next,	753	setup_coro, (void *)next,
728	next->stack->sptr, labs (next->stack->ssize));	754	next->stack->sptr, labs (next->stack->ssize));
729	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	755	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		756	prev->cursp = stacklevel;
730	/* don't add any code here */	757	/* don't add any code here */
731	}	758	}
732	}	759	}
733	else	760	else
		761	{
734	setup_coro (next);	762	setup_coro (next);
		763	next->cursp = stacklevel;
		764	}
735	}	765	}
736	}	766	}
737		767
738	/*	768	LOCK;
739	* xnext is now either prev or next, depending on wether	769	if (coro_mortal)
740	* we switched the c stack or not. that's why i use a global
741	* variable, that should become thread-specific at one point.
742	*/
743	xnext->cursp = stacklevel;
744	}
745
746	static struct coro *
747	sv_to_coro (SV arg, const char funcname, const char *varname)
748	{
749	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
750	{	770	{
751	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	771	SvREFCNT_dec (coro_mortal);
752		772	coro_mortal = 0;
753	if (!he)
754	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
755
756	arg = HeVAL(he);
757	}	773	}
758		774	UNLOCK;
		775	}
		776
		777	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		778
		779	#define SV_CORO(sv,func) \
		780	do { \
		781	if (SvROK (sv)) \
		782	sv = SvRV (sv); \
		783	\
		784	if (SvTYPE (sv) == SVt_PVHV) \
		785	{ \
		786	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		787	\
		788	if (!he) \
		789	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		790	\
		791	(sv) = SvRV (HeVAL(he)); \
		792	} \
		793	\
759	/* must also be changed inside Coro::Cont::yield */	794	/* must also be changed inside Coro::Cont::yield */ \
760	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	795	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
761	return (struct coro ) SvIV((SV)SvRV(arg));
762
763	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	796	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
764	/NORETURN/	797	\
765	}	798	} while(0)
766		799
		800	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))
		801
767	static void	802	static void
768	api_transfer(pTHX_ SV prev, SV next, int flags)	803	api_transfer (pTHX_ SV prev, SV next, int flags)
769	{	804	{
770	transfer(aTHX_	805	SV_CORO (prev, "Coro::transfer");
771	sv_to_coro (prev, "Coro::transfer", "prev"),	806	SV_CORO (next, "Coro::transfer");
772	sv_to_coro (next, "Coro::transfer", "next"),	807
773	flags);	808	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
774	}	809	}
775		810
776	/ Coro ******************************************************************/	811	/ Coro ******************************************************************/
777		812
778	#define PRIO_MAX 3	813	#define PRIO_MAX 3
…		…
782	#define PRIO_IDLE -3	817	#define PRIO_IDLE -3
783	#define PRIO_MIN -4	818	#define PRIO_MIN -4
784		819
785	/* for Coro.pm */	820	/* for Coro.pm */
786	static GV coro_current, coro_idle;	821	static GV coro_current, coro_idle;
787	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	822	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
788	static int coro_nready;	823	static int coro_nready;
789		824
790	static void	825	static void
791	coro_enq (SV *sv)	826	coro_enq (pTHX_ SV *sv)
792	{	827	{
793	if (SvROK (sv))	828	SV **xprio;
794	{	829	int prio;
795	SV *hv = SvRV (sv);	830
796	if (SvTYPE (hv) == SVt_PVHV)	831	if (SvTYPE (sv) != SVt_PVHV)
797	{
798	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);
799	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
800
801	prio = prio > PRIO_MAX ? PRIO_MAX
802	: prio < PRIO_MIN ? PRIO_MIN
803	: prio;
804
805	av_push (coro_ready [prio - PRIO_MIN], sv);
806	coro_nready++;
807
808	return;
809	}
810	}
811
812	croak ("Coro::ready tried to enqueue something that is not a coroutine");	832	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		833
		834	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
		835	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		836
		837	prio = prio > PRIO_MAX ? PRIO_MAX
		838	: prio < PRIO_MIN ? PRIO_MIN
		839	: prio;
		840
		841	av_push (coro_ready [prio - PRIO_MIN], sv);
		842	coro_nready++;
813	}	843	}
814		844
815	static SV *	845	static SV *
816	coro_deq (int min_prio)	846	coro_deq (pTHX_ int min_prio)
817	{	847	{
818	int prio = PRIO_MAX - PRIO_MIN;	848	int prio = PRIO_MAX - PRIO_MIN;
819		849
820	min_prio -= PRIO_MIN;	850	min_prio -= PRIO_MIN;
821	if (min_prio < 0)	851	if (min_prio < 0)
822	min_prio = 0;	852	min_prio = 0;
823		853
824	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	854	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
825	if (av_len (coro_ready[prio]) >= 0)	855	if (AvFILLp (coro_ready [prio]) >= 0)
826	{	856	{
827	coro_nready--;	857	coro_nready--;
828	return av_shift (coro_ready[prio]);	858	return av_shift (coro_ready [prio]);
829	}	859	}
830		860
831	return 0;	861	return 0;
832	}	862	}
833		863
834	static void	864	static void
835	api_ready (SV *coro)	865	api_ready (SV *coro)
836	{	866	{
		867	dTHX;
		868
		869	if (SvROK (coro))
		870	coro = SvRV (coro);
		871
		872	LOCK;
837	coro_enq (SvREFCNT_inc (coro));	873	coro_enq (aTHX_ SvREFCNT_inc (coro));
		874	UNLOCK;
838	}	875	}
839		876
840	static void	877	static void
841	api_schedule (int cede)	878	api_schedule (void)
842	{	879	{
		880	dTHX;
		881
843	SV prev, next;	882	SV prev, next;
844		883
		884	LOCK;
		885
845	prev = GvSV (coro_current);	886	prev = SvRV (GvSV (coro_current));
846
847	if (cede)
848	coro_enq (SvREFCNT_inc (prev));
849
850	next = coro_deq (PRIO_MIN);	887	next = coro_deq (aTHX_ PRIO_MIN);
851		888
852	if (!next)	889	if (!next)
853	next = SvREFCNT_inc (GvSV (coro_idle));	890	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
854		891
855	GvSV (coro_current) = SvREFCNT_inc (next);	892	/* free this only after the transfer */
856	transfer (aTHX_	893	coro_mortal = prev;
857	sv_to_coro (prev, "Coro::schedule", "current coroutine"),	894	SV_CORO (prev, "Coro::schedule");
858	sv_to_coro (next, "Coro::schedule", "next coroutine"),	895
		896	SvRV (GvSV (coro_current)) = next;
		897
		898	SV_CORO (next, "Coro::schedule");
		899
		900	UNLOCK;
		901
		902	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
859	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	903	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
860	SvREFCNT_dec (next);	904	}
861	SvREFCNT_dec (prev);	905
		906	static void
		907	api_cede (void)
		908	{
		909	dTHX;
		910
		911	LOCK;
		912	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		913	UNLOCK;
		914
		915	api_schedule ();
862	}	916	}
863		917
864	MODULE = Coro::State PACKAGE = Coro::State	918	MODULE = Coro::State PACKAGE = Coro::State
865		919
866	PROTOTYPES: ENABLE	920	PROTOTYPES: ENABLE
867		921
868	BOOT:	922	BOOT:
869	{ /* {} necessary for stoopid perl-5.6.x */	923	{ /* {} necessary for stoopid perl-5.6.x */
		924	#ifdef USE_ITHREADS
		925	MUTEX_INIT (&coro_mutex);
		926	#endif
		927	BOOT_PAGESIZE;
		928
870	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	929	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
871	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	930	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
872	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	931	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
873		932
874	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	933	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
875	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	934	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
876	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	935	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
877	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	936	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
878
879	if (!padlist_cache)
880	padlist_cache = newHV ();
881		937
882	main_mainstack = PL_mainstack;	938	main_mainstack = PL_mainstack;
883		939
884	coroapi.ver = CORO_API_VERSION;	940	coroapi.ver = CORO_API_VERSION;
885	coroapi.transfer = api_transfer;	941	coroapi.transfer = api_transfer;
…		…
893	Coro__State coro;	949	Coro__State coro;
894		950
895	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	951	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
896	croak ("Coro::State::_newprocess expects an arrayref");	952	croak ("Coro::State::_newprocess expects an arrayref");
897		953
898	New (0, coro, 1, struct coro);	954	Newz (0, coro, 1, struct coro);
899		955
900	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	956	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
901	coro->mainstack = 0; /* actual work is done inside transfer */	957	/coro->mainstack = 0; //actual work is done inside transfer /
902	coro->stack = 0;	958	/coro->stack = 0;/
903		959
904	RETVAL = coro;	960	RETVAL = coro;
905	OUTPUT:	961	OUTPUT:
906	RETVAL	962	RETVAL
907		963
908	void	964	void
909	transfer(prev, next, flags)	965	transfer(prev, next, flags)
910	Coro::State_or_hashref prev	966	SV *prev
911	Coro::State_or_hashref next	967	SV *next
912	int flags	968	int flags
913	PROTOTYPE: @	969	PROTOTYPE: @
914	CODE:	970	CODE:
915	PUTBACK;	971	PUTBACK;
916	transfer (aTHX_ prev, next, flags);	972	SV_CORO (next, "Coro::transfer");
		973	SV_CORO (prev, "Coro::transfer");
		974	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
917	SPAGAIN;	975	SPAGAIN;
918		976
919	void	977	void
920	DESTROY(coro)	978	DESTROY(coro)
921	Coro::State coro	979	Coro::State coro
…		…
924	if (coro->mainstack && coro->mainstack != main_mainstack)	982	if (coro->mainstack && coro->mainstack != main_mainstack)
925	{	983	{
926	struct coro temp;	984	struct coro temp;
927		985
928	PUTBACK;	986	PUTBACK;
929	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	987	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
930	LOAD(aTHX_ coro);	988	LOAD (aTHX_ coro);
931	SPAGAIN;	989	SPAGAIN;
932		990
933	destroy_stacks (aTHX);	991	destroy_stacks (aTHX);
934		992
935	LOAD((&temp)); /* this will get rid of defsv etc.. */	993	LOAD ((&temp)); /* this will get rid of defsv etc.. */
936	SPAGAIN;	994	SPAGAIN;
937		995
938	coro->mainstack = 0;	996	coro->mainstack = 0;
939	}	997	}
940		998
941	deallocate_stack (coro);	999	deallocate_stack (coro);
942		1000	SvREFCNT_dec (coro->args);
943	Safefree (coro);	1001	Safefree (coro);
944
945	void
946	flush()
947	CODE:
948	#ifdef MAY_FLUSH
949	flush_padlist_cache ();
950	#endif
951		1002
952	void	1003	void
953	_exit(code)	1004	_exit(code)
954	int code	1005	int code
955	PROTOTYPE: $	1006	PROTOTYPE: $
956	CODE:	1007	CODE:
957	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
958	_exit (code);	1008	_exit (code);
959	#else
960	signal (SIGTERM, SIG_DFL);
961	raise (SIGTERM);
962	exit (code);
963	#endif
964		1009
965	MODULE = Coro::State PACKAGE = Coro::Cont	1010	MODULE = Coro::State PACKAGE = Coro::Cont
966
967	# this is slightly dirty (should expose a c-level api)
968		1011
969	void	1012	void
970	yield(...)	1013	yield(...)
971	PROTOTYPE: @	1014	PROTOTYPE: @
972	CODE:	1015	CODE:
973	static SV *returnstk;	1016	SV *yieldstack;
974	SV *sv;	1017	SV *sv;
975	AV *defav = GvAV (PL_defgv);	1018	AV *defav = GvAV (PL_defgv);
976	struct coro prev, next;	1019	struct coro prev, next;
977		1020
978	if (!returnstk)	1021	yieldstack = *hv_fetch (
979	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1022	(HV *)SvRV (GvSV (coro_current)),
		1023	"yieldstack", sizeof ("yieldstack") - 1,
		1024	0
		1025	);
980		1026
981	/* set up @_ -- ugly */	1027	/* set up @_ -- ugly */
982	av_clear (defav);	1028	av_clear (defav);
983	av_fill (defav, items - 1);	1029	av_fill (defav, items - 1);
984	while (items--)	1030	while (items--)
985	av_store (defav, items, SvREFCNT_inc (ST(items)));	1031	av_store (defav, items, SvREFCNT_inc (ST(items)));
986		1032
987	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
988	sv = av_pop ((AV *)SvRV (returnstk));	1033	sv = av_pop ((AV *)SvRV (yieldstack));
989	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1034	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
990	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1035	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
991	SvREFCNT_dec (sv);	1036	SvREFCNT_dec (sv);
992		1037
993	transfer(aTHX_ prev, next, 0);	1038	coro_state_transfer (aTHX_ prev, next, 0);
994		1039
995	MODULE = Coro::State PACKAGE = Coro	1040	MODULE = Coro::State PACKAGE = Coro
996
997	# this is slightly dirty (should expose a c-level api)
998		1041
999	BOOT:	1042	BOOT:
1000	{	1043	{
1001	int i;	1044	int i;
1002	HV *stash = gv_stashpv ("Coro", TRUE);	1045	HV *stash = gv_stashpv ("Coro", TRUE);
…		…
1016		1059
1017	{	1060	{
1018	SV *sv = perl_get_sv("Coro::API", 1);	1061	SV *sv = perl_get_sv("Coro::API", 1);
1019		1062
1020	coroapi.schedule = api_schedule;	1063	coroapi.schedule = api_schedule;
		1064	coroapi.cede = api_cede;
1021	coroapi.ready = api_ready;	1065	coroapi.ready = api_ready;
1022	coroapi.nready = &coro_nready;	1066	coroapi.nready = &coro_nready;
1023	coroapi.current = coro_current;	1067	coroapi.current = coro_current;
1024		1068
1025	GCoroAPI = &coroapi;	1069	GCoroAPI = &coroapi;
1026	sv_setiv(sv, (IV)&coroapi);	1070	sv_setiv (sv, (IV)&coroapi);
1027	SvREADONLY_on(sv);	1071	SvREADONLY_on (sv);
1028	}	1072	}
1029	}	1073	}
		1074
		1075	#if !PERL_MICRO
1030		1076
1031	void	1077	void
1032	ready(self)	1078	ready(self)
1033	SV * self	1079	SV * self
		1080	PROTOTYPE: $
1034	CODE:	1081	CODE:
1035	api_ready (self);	1082	api_ready (self);
		1083
		1084	#endif
1036		1085
1037	int	1086	int
1038	nready(...)	1087	nready(...)
1039	PROTOTYPE:	1088	PROTOTYPE:
1040	CODE:	1089	CODE:
…		…
1043	RETVAL	1092	RETVAL
1044		1093
1045	void	1094	void
1046	schedule(...)	1095	schedule(...)
1047	PROTOTYPE:	1096	PROTOTYPE:
1048	ALIAS:
1049	cede = 1
1050	CODE:	1097	CODE:
1051	api_schedule (ix);	1098	api_schedule ();
1052		1099
		1100	void
		1101	cede(...)
		1102	PROTOTYPE:
		1103	CODE:
		1104	api_cede ();
		1105
		1106	# and these are hacks
		1107	SV *
		1108	_aio_get_state ()
		1109	CODE:
		1110	{
		1111	struct {
		1112	int errorno;
		1113	int laststype;
		1114	int laststatval;
		1115	Stat_t statcache;
		1116	} data;
		1117
		1118	data.errorno = errno;
		1119	data.laststype = PL_laststype;
		1120	data.laststatval = PL_laststatval;
		1121	data.statcache = PL_statcache;
		1122
		1123	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1124	}
		1125	OUTPUT:
		1126	RETVAL
		1127
		1128	void
		1129	_aio_set_state (char *data_)
		1130	PROTOTYPE: $
		1131	CODE:
		1132	{
		1133	struct {
		1134	int errorno;
		1135	int laststype;
		1136	int laststatval;
		1137	Stat_t statcache;
		1138	} data = (void )data_;
		1139
		1140	errno = data->errorno;
		1141	PL_laststype = data->laststype;
		1142	PL_laststatval = data->laststatval;
		1143	PL_statcache = data->statcache;
		1144	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.30 by root, Sat Aug 25 22:19:05 2001 UTC vs. Revision 1.84 by root, Fri Nov 24 00:31:21 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.30 by root, Sat Aug 25 22:19:05 2001 UTC vs.
Revision 1.84 by root, Fri Nov 24 00:31:21 2006 UTC