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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.38 by root, Wed Nov 7 00:21:06 2001 UTC vs.
Revision 1.82 by root, Mon Nov 20 22:26:16 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_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
14	# define MAP_ANONYMOUS 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
…		…
32		71
33	#define labs(l) ((l) >= 0 ? (l) : -(l))	72	#define labs(l) ((l) >= 0 ? (l) : -(l))
34		73
35	#include "CoroAPI.h"	74	#include "CoroAPI.h"
36		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
37	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 */
38		91
39	/* 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... */
40	typedef struct {	93	typedef struct {
41	int refcnt; /* pointer reference counter */	94	int refcnt; /* pointer reference counter */
42	int usecnt; /* shared by how many coroutines */	95	int usecnt; /* shared by how many coroutines */
…		…
56		109
57	/* optionally saved, might be zero */	110	/* optionally saved, might be zero */
58	AV *defav;	111	AV *defav;
59	SV *defsv;	112	SV *defsv;
60	SV *errsv;	113	SV *errsv;
61	/* TODO: PL_pmop might be nice && effortless to save. */
62		114
63	/* saved global state not related to stacks */	115	/* saved global state not related to stacks */
64	U8 dowarn;	116	U8 dowarn;
65	I32 in_eval;	117	I32 in_eval;
66		118
…		…
69	AV *curstack;	121	AV *curstack;
70	AV *mainstack;	122	AV *mainstack;
71	SV **stack_sp;	123	SV **stack_sp;
72	OP *op;	124	OP *op;
73	SV **curpad;	125	SV **curpad;
		126	AV *comppad;
		127	CV *compcv;
74	SV **stack_base;	128	SV **stack_base;
75	SV **stack_max;	129	SV **stack_max;
76	SV **tmps_stack;	130	SV **tmps_stack;
77	I32 tmps_floor;	131	I32 tmps_floor;
78	I32 tmps_ix;	132	I32 tmps_ix;
…		…
87	I32 savestack_ix;	141	I32 savestack_ix;
88	I32 savestack_max;	142	I32 savestack_max;
89	OP **retstack;	143	OP **retstack;
90	I32 retstack_ix;	144	I32 retstack_ix;
91	I32 retstack_max;	145	I32 retstack_max;
		146	PMOP *curpm;
92	COP *curcop;	147	COP *curcop;
93	JMPENV *top_env;	148	JMPENV *top_env;
94		149
95	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
96	AV *args;	151	AV *args;
97	};	152	};
98		153
99	typedef struct coro *Coro__State;	154	typedef struct coro *Coro__State;
100	typedef struct coro *Coro__State_or_hashref;	155	typedef struct coro *Coro__State_or_hashref;
101		156
102	static AV main_mainstack; / used to differentiate between $main and others */	157	static AV *
103	static HV *coro_state_stash;	158	coro_clone_padlist (pTHX_ CV *cv)
104	static SV *ucoro_state_sv;
105	static U32 ucoro_state_hash;
106	static HV *padlist_cache;
107
108	/* mostly copied from op.c:cv_clone2 */
109	STATIC AV *
110	clone_padlist (AV *protopadlist)
111	{	159	{
112	AV *av;	160	AV *padlist = CvPADLIST (cv);
113	I32 ix;
114	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
115	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
116	SV **pname = AvARRAY (protopad_name);
117	SV **ppad = AvARRAY (protopad);
118	I32 fname = AvFILLp (protopad_name);
119	I32 fpad = AvFILLp (protopad);
120	AV newpadlist, newpad_name, *newpad;	161	AV newpadlist, newpad;
121	SV **npad;
122
123	newpad_name = newAV ();
124	for (ix = fname; ix >= 0; ix--)
125	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
126
127	newpad = newAV ();
128	av_fill (newpad, AvFILLp (protopad));
129	npad = AvARRAY (newpad);
130		162
131	newpadlist = newAV ();	163	newpadlist = newAV ();
132	AvREAL_off (newpadlist);	164	AvREAL_off (newpadlist);
133	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)));
134	av_store (newpadlist, 1, (SV *) newpad);	174	av_store (newpadlist, 1, (SV *)newpad);
135		175
136	av = newAV (); /* will be @_ */	176	return newpadlist;
137	av_extend (av, 0);	177	}
138	av_store (newpad, 0, (SV *) av);
139	AvFLAGS (av) = AVf_REIFY;
140		178
141	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))
142	{	184	{
143	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	185	I32 i = AvFILLp (padlist);
144	if (namesv && namesv != &PL_sv_undef)	186	while (i >= 0)
145	{	187	{
146	char name = SvPVX (namesv); / XXX */	188	SV **svp = av_fetch (padlist, i--, FALSE);
147	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	189	if (svp)
148	{ /* lexical from outside? */
149	npad[ix] = SvREFCNT_inc (ppad[ix]);
150	}	190	{
151	else
152	{ /* our own lexical */
153	SV *sv;	191	SV *sv;
154	if (*name == '&')	192	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
155	sv = SvREFCNT_inc (ppad[ix]);	193	SvREFCNT_dec (sv);
156	else if (*name == '@')	194
157	sv = (SV *) newAV ();	195	SvREFCNT_dec (*svp);
158	else if (*name == '%')
159	sv = (SV *) newHV ();
160	else
161	sv = NEWSV (0, 0);
162	if (!SvPADBUSY (sv))
163	SvPADMY_on (sv);
164	npad[ix] = sv;
165	}	196	}
166	}	197	}
167	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	198
168	{	199	SvREFCNT_dec ((SV*)padlist);
169	npad[ix] = SvREFCNT_inc (ppad[ix]);
170	}
171	else
172	{
173	SV *sv = NEWSV (0, 0);
174	SvPADTMP_on (sv);
175	npad[ix] = sv;
176	}
177	}	200	}
		201	}
178		202
179	#if 0 /* return -ENOTUNDERSTOOD */	203	static int
180	/* 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;
181		208
182	for (ix = fpad; ix > 0; ix--) {	209	/* casting is fun. */
183	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
184	if (namesv	211	free_padlist (aTHX_ padlist);
185	&& namesv != &PL_sv_undef	212
186	&& !(SvFLAGS(namesv) & SVf_FAKE)	213	SvREFCNT_dec (av);
187	&& *SvPVX(namesv) == '&'	214
188	&& CvCLONE(ppad[ix]))	215	return 0;
189	{	216	}
190	CV kid = cv_clone((CV)ppad[ix]);	217
191	SvREFCNT_dec(ppad[ix]);	218	#define PERL_MAGIC_coro PERL_MAGIC_ext
192	CvCLONE_on(kid);	219
193	SvPADMY_on(kid);	220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
194	npad[ix] = (SV*)kid;	221
195	}	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 ();
196	}	255	}
197	#endif
198		256
199	return newpadlist;
200	}
201
202	#ifdef MAY_FLUSH
203	STATIC void
204	free_padlist (AV *padlist)
205	{
206	/* may be during global destruction */
207	if (SvREFCNT(padlist))
208	{
209	I32 i = AvFILLp(padlist);
210	while (i >= 0)
211	{
212	SV **svp = av_fetch(padlist, i--, FALSE);
213	SV sv = svp ? svp : Nullsv;
214	if (sv)
215	SvREFCNT_dec(sv);
216	}
217
218	SvREFCNT_dec((SV*)padlist);
219	}
220	}
221	#endif
222
223	/* the next two functions merely cache the padlists */
224	STATIC void
225	get_padlist (CV *cv)
226	{
227	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
228
229	if (he && AvFILLp ((AV )he) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
231	else
232	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
233	}
234
235	STATIC void
236	put_padlist (CV *cv)
237	{
238	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
239
240	if (SvTYPE (*he) != SVt_PVAV)
241	{
242	SvREFCNT_dec (*he);
243	he = (SV )newAV ();
244	}
245
246	av_push ((AV )he, (SV *)CvPADLIST (cv));	257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
247	}	258	}
248
249	#ifdef MAY_FLUSH
250	STATIC void
251	flush_padlist_cache ()
252	{
253	HV *hv = padlist_cache;
254	padlist_cache = newHV ();
255
256	if (hv_iterinit (hv))
257	{
258	HE *he;
259	AV *padlist;
260
261	while (!!(he = hv_iternext (hv)))
262	{
263	AV av = (AV )HeVAL(he);
264
265	/* casting is fun. */
266	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
267	free_padlist (padlist);
268	}
269	}
270
271	SvREFCNT_dec (hv);
272	}
273	#endif
274		259
275	#define SB do {	260	#define SB do {
276	#define SE } while (0)	261	#define SE } while (0)
277		262
278	#define LOAD(state) load_state(aTHX_ (state));	263	#define LOAD(state) load_state(aTHX_ (state));
279	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
280		265
281	#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
282		267
283	static void	268	static void
284	load_state(pTHX_ Coro__State c)	269	load_state(pTHX_ Coro__State c)
285	{	270	{
286	PL_dowarn = c->dowarn;	271	PL_dowarn = c->dowarn;
…		…
290	PL_curstack = c->curstack;	275	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;	276	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;	277	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;	278	PL_op = c->op;
294	PL_curpad = c->curpad;	279	PL_curpad = c->curpad;
		280	PL_comppad = c->comppad;
		281	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;	282	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;	283	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;	284	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;	285	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;	286	PL_tmps_ix = c->tmps_ix;
…		…
305	PL_scopestack_ix = c->scopestack_ix;	292	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;	293	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;	294	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;	295	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;	296	PL_savestack_max = c->savestack_max;
		297	#if PERL_VERSION < 9
310	PL_retstack = c->retstack;	298	PL_retstack = c->retstack;
311	PL_retstack_ix = c->retstack_ix;	299	PL_retstack_ix = c->retstack_ix;
312	PL_retstack_max = c->retstack_max;	300	PL_retstack_max = c->retstack_max;
		301	#endif
		302	PL_curpm = c->curpm;
313	PL_curcop = c->curcop;	303	PL_curcop = c->curcop;
314	PL_top_env = c->top_env;	304	PL_top_env = c->top_env;
315		305
316	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
317	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
326	{	316	{
327	AV padlist = (AV )POPs;	317	AV padlist = (AV )POPs;
328		318
329	if (padlist)	319	if (padlist)
330	{	320	{
331	put_padlist (cv); /* mark this padlist as available */	321	put_padlist (aTHX_ cv); /* mark this padlist as available */
332	CvPADLIST(cv) = padlist;	322	CvPADLIST(cv) = padlist;
333	#ifdef USE_THREADS
334	/CvOWNER(cv) = (struct perl_thread )POPs;*/
335	#endif
336	}	323	}
337		324
338	++CvDEPTH(cv);	325	++CvDEPTH(cv);
339	}	326	}
340		327
…		…
367	if (CxTYPE(cx) == CXt_SUB)	354	if (CxTYPE(cx) == CXt_SUB)
368	{	355	{
369	CV *cv = cx->blk_sub.cv;	356	CV *cv = cx->blk_sub.cv;
370	if (CvDEPTH(cv))	357	if (CvDEPTH(cv))
371	{	358	{
372	#ifdef USE_THREADS
373	/XPUSHs ((SV )CvOWNER(cv));*/
374	/CvOWNER(cv) = 0;/
375	/error must unlock this cv etc.. etc.../
376	#endif
377	EXTEND (SP, CvDEPTH(cv)*2);	359	EXTEND (SP, CvDEPTH(cv)*2);
378		360
379	while (--CvDEPTH(cv))	361	while (--CvDEPTH(cv))
380	{	362	{
381	/* this tells the restore code to increment CvDEPTH */	363	/* this tells the restore code to increment CvDEPTH */
…		…
384	}	366	}
385		367
386	PUSHs ((SV *)CvPADLIST(cv));	368	PUSHs ((SV *)CvPADLIST(cv));
387	PUSHs ((SV *)cv);	369	PUSHs ((SV *)cv);
388		370
389	get_padlist (cv); /* this is a monster */	371	get_padlist (aTHX_ cv);
390	}	372	}
391	}	373	}
		374	#ifdef CXt_FORMAT
392	else if (CxTYPE(cx) == CXt_FORMAT)	375	else if (CxTYPE(cx) == CXt_FORMAT)
393	{	376	{
394	/* 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? */
395	/* my bold guess is as a simple, plain sub... */	378	/* my bold guess is as a simple, plain sub... */
396	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");
397	}	380	}
		381	#endif
398	}	382	}
399		383
400	if (top_si->si_type == PERLSI_MAIN)	384	if (top_si->si_type == PERLSI_MAIN)
401	break;	385	break;
402		386
…		…
419	c->curstack = PL_curstack;	403	c->curstack = PL_curstack;
420	c->mainstack = PL_mainstack;	404	c->mainstack = PL_mainstack;
421	c->stack_sp = PL_stack_sp;	405	c->stack_sp = PL_stack_sp;
422	c->op = PL_op;	406	c->op = PL_op;
423	c->curpad = PL_curpad;	407	c->curpad = PL_curpad;
		408	c->comppad = PL_comppad;
		409	c->compcv = PL_compcv;
424	c->stack_base = PL_stack_base;	410	c->stack_base = PL_stack_base;
425	c->stack_max = PL_stack_max;	411	c->stack_max = PL_stack_max;
426	c->tmps_stack = PL_tmps_stack;	412	c->tmps_stack = PL_tmps_stack;
427	c->tmps_floor = PL_tmps_floor;	413	c->tmps_floor = PL_tmps_floor;
428	c->tmps_ix = PL_tmps_ix;	414	c->tmps_ix = PL_tmps_ix;
…		…
434	c->scopestack_ix = PL_scopestack_ix;	420	c->scopestack_ix = PL_scopestack_ix;
435	c->scopestack_max = PL_scopestack_max;	421	c->scopestack_max = PL_scopestack_max;
436	c->savestack = PL_savestack;	422	c->savestack = PL_savestack;
437	c->savestack_ix = PL_savestack_ix;	423	c->savestack_ix = PL_savestack_ix;
438	c->savestack_max = PL_savestack_max;	424	c->savestack_max = PL_savestack_max;
		425	#if PERL_VERSION < 9
439	c->retstack = PL_retstack;	426	c->retstack = PL_retstack;
440	c->retstack_ix = PL_retstack_ix;	427	c->retstack_ix = PL_retstack_ix;
441	c->retstack_max = PL_retstack_max;	428	c->retstack_max = PL_retstack_max;
		429	#endif
		430	c->curpm = PL_curpm;
442	c->curcop = PL_curcop;	431	c->curcop = PL_curcop;
443	c->top_env = PL_top_env;	432	c->top_env = PL_top_env;
444	}	433	}
445		434
446	/*	435	/*
447	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
449	* on the assumption that coroutines do not usually need	438	* on the (sometimes correct) assumption that coroutines do
450	* a lot of stackspace.	439	* not usually need a lot of stackspace.
451	*/	440	*/
452	STATIC void	441	static void
453	coro_init_stacks (pTHX)	442	coro_init_stacks (pTHX)
454	{	443	{
		444	LOCK;
		445
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
456	PL_curstackinfo->si_type = PERLSI_MAIN;	447	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	448	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		450
…		…
468		459
469	New(54,PL_markstack,16,I32);	460	New(54,PL_markstack,16,I32);
470	PL_markstack_ptr = PL_markstack;	461	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	462	PL_markstack_max = PL_markstack + 16;
472		463
		464	#ifdef SET_MARK_OFFSET
473	SET_MARK_OFFSET;	465	SET_MARK_OFFSET;
		466	#endif
474		467
475	New(54,PL_scopestack,16,I32);	468	New(54,PL_scopestack,16,I32);
476	PL_scopestack_ix = 0;	469	PL_scopestack_ix = 0;
477	PL_scopestack_max = 16;	470	PL_scopestack_max = 16;
478		471
479	New(54,PL_savestack,96,ANY);	472	New(54,PL_savestack,96,ANY);
480	PL_savestack_ix = 0;	473	PL_savestack_ix = 0;
481	PL_savestack_max = 96;	474	PL_savestack_max = 96;
482		475
		476	#if PERL_VERSION < 9
483	New(54,PL_retstack,8,OP*);	477	New(54,PL_retstack,8,OP*);
484	PL_retstack_ix = 0;	478	PL_retstack_ix = 0;
485	PL_retstack_max = 8;	479	PL_retstack_max = 8;
		480	#endif
		481
		482	UNLOCK;
486	}	483	}
487		484
488	/*	485	/*
489	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
490	* still there is a memleak of 128 bytes...
491	*/	487	*/
492	STATIC void	488	static void
493	destroy_stacks(pTHX)	489	destroy_stacks(pTHX)
494	{	490	{
495	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
496	{	492	{
497	/* is this ugly, I ask? */	493	/* is this ugly, I ask? */
498	while (PL_scopestack_ix)	494	LEAVE_SCOPE (0);
499	LEAVE;
500		495
501	/* sure it is, but more important: is it correct?? :/ */	496	/* sure it is, but more important: is it correct?? :/ */
502	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
503	FREETMPS;	497	FREETMPS;
		498
		499	/POPSTACK_TO (PL_mainstack);//D//use/
504	}	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 (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
520	{	516	{
521	dounwind(-1);	517	dounwind (-1);/D//remove/
522	SvREFCNT_dec(PL_curstackinfo->si_stack);	518	SvREFCNT_dec (PL_curstackinfo->si_stack);
523	}	519	}
524		520
525	Safefree(PL_curstackinfo->si_cxstack);	521	Safefree (PL_curstackinfo->si_cxstack);
526	Safefree(PL_curstackinfo);	522	Safefree (PL_curstackinfo);
527	PL_curstackinfo = p;	523	PL_curstackinfo = p;
528	}	524	}
529		525
530	Safefree(PL_tmps_stack);	526	Safefree (PL_tmps_stack);
531	Safefree(PL_markstack);	527	Safefree (PL_markstack);
532	Safefree(PL_scopestack);	528	Safefree (PL_scopestack);
533	Safefree(PL_savestack);	529	Safefree (PL_savestack);
		530	#if PERL_VERSION < 9
534	Safefree(PL_retstack);	531	Safefree (PL_retstack);
		532	#endif
535	}	533	}
536		534
537	static void	535	static void
538	allocate_stack (Coro__State ctx, int alloc)	536	allocate_stack (Coro__State ctx, int alloc)
539	{	537	{
…		…
542	New (0, stack, 1, coro_stack);	540	New (0, stack, 1, coro_stack);
543		541
544	stack->refcnt = 1;	542	stack->refcnt = 1;
545	stack->usecnt = 1;	543	stack->usecnt = 1;
546	stack->gencnt = ctx->gencnt = 0;	544	stack->gencnt = ctx->gencnt = 0;
		545
547	if (alloc)	546	if (alloc)
548	{	547	{
549	#if HAVE_MMAP	548	#if HAVE_MMAP
550	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 */
551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
552	if (stack->sptr == (void *)-1)	551	if (stack->sptr != (void *)-1)
553	#endif
554	{	552	{
555	/FIXME//D//* reasonable stack size! */	553	# if STACKGUARD
		554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		555	# endif
		556	}
		557	else
		558	#endif
		559	{
556	stack->ssize = -4096 * sizeof (long);	560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
557	New (0, stack->sptr, 4096, long);	561	New (0, stack->sptr, STACKSIZE, long);
558	}	562	}
559	}	563	}
560	else	564	else
561	stack->sptr = 0;	565	stack->sptr = 0;
562		566
…		…
576	{	580	{
577	#ifdef HAVE_MMAP	581	#ifdef HAVE_MMAP
578	if (stack->ssize > 0 && stack->sptr)	582	if (stack->ssize > 0 && stack->sptr)
579	munmap (stack->sptr, stack->ssize);	583	munmap (stack->sptr, stack->ssize);
580	else	584	else
581	#else	585	#endif
582	Safefree (stack->sptr);	586	Safefree (stack->sptr);
583	#endif	587
584	Safefree (stack);	588	Safefree (stack);
585	}	589	}
586	else if (ctx->gencnt == stack->gencnt)	590	else if (ctx->gencnt == stack->gencnt)
587	--stack->usecnt;	591	--stack->usecnt;
588	}	592	}
…		…
592	setup_coro (void *arg)	596	setup_coro (void *arg)
593	{	597	{
594	/*	598	/*
595	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
596	*/	600	*/
		601	dTHX;
597	dSP;	602	dSP;
598	Coro__State ctx = (Coro__State)arg;	603	Coro__State ctx = (Coro__State)arg;
599	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
600		605
601	coro_init_stacks (aTHX);	606	coro_init_stacks (aTHX);
602	/PL_curcop = 0;/	607	/PL_curcop = 0;/
603	/PL_in_eval = PL_in_eval;/ /* inherit */	608	/PL_in_eval = PL_in_eval;/ /* inherit */
604	SvREFCNT_dec (GvAV (PL_defgv));	609	SvREFCNT_dec (GvAV (PL_defgv));
605	GvAV (PL_defgv) = ctx->args;	610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
606		611
607	SPAGAIN;	612	SPAGAIN;
608		613
609	if (ctx->stack)	614	if (ctx->stack)
610	{	615	{
…		…
621	}	626	}
622	else	627	else
623	{	628	{
624	UNOP myop;	629	UNOP myop;
625		630
626	PL_op = (OP *)&myop;
627
628	Zero(&myop, 1, UNOP);	631	Zero(&myop, 1, UNOP);
629	myop.op_next = Nullop;	632	myop.op_next = Nullop;
630	myop.op_flags = OPf_WANT_VOID;	633	myop.op_flags = OPf_WANT_VOID;
		634
		635	PL_op = (OP *)&myop;
631		636
632	PUSHMARK(SP);	637	PUSHMARK(SP);
633	XPUSHs (sub_init);	638	XPUSHs (sub_init);
634	/*	639	/*
635	* the next line is slightly wrong, as PL_op->op_next	640	* the next line is slightly wrong, as PL_op->op_next
…		…
637	* that doesn't matter, though, since it is only	642	* that doesn't matter, though, since it is only
638	* pp_nextstate and we never return...	643	* pp_nextstate and we never return...
639	* ah yes, and I don't care anyways ;)	644	* ah yes, and I don't care anyways ;)
640	*/	645	*/
641	PUTBACK;	646	PUTBACK;
642	PL_op = pp_entersub();	647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
643	SPAGAIN;	648	SPAGAIN;
644		649
645	ENTER; /* necessary e.g. for dounwind */	650	ENTER; /* necessary e.g. for dounwind */
646	}	651	}
647	}	652	}
…		…
650	continue_coro (void *arg)	655	continue_coro (void *arg)
651	{	656	{
652	/*	657	/*
653	* this is a _very_ stripped down perl interpreter ;)	658	* this is a _very_ stripped down perl interpreter ;)
654	*/	659	*/
		660	dTHX;
655	Coro__State ctx = (Coro__State)arg;	661	Coro__State ctx = (Coro__State)arg;
656	JMPENV coro_start_env;
657		662
658	/* same as JMPENV_BOOTSTRAP */
659	Zero(&coro_start_env, 1, JMPENV);
660	coro_start_env.je_ret = -1;
661	coro_start_env.je_mustcatch = TRUE;
662	PL_top_env = &coro_start_env;	663	PL_top_env = &PL_start_env;
663		664
664	ctx->cursp = 0;	665	ctx->cursp = 0;
665	PL_op = PL_op->op_next;	666	PL_op = PL_op->op_next;
666	CALLRUNOPS(aTHX);	667	CALLRUNOPS(aTHX);
667		668
668	abort ();	669	abort ();
669	}	670	}
670		671
671	STATIC void	672	static void
672	transfer(pTHX_ struct coro prev, struct coro next, int flags)	673	transfer (pTHX_ struct coro prev, struct coro next, int flags)
673	{	674	{
674	dSTACKLEVEL;	675	dSTACKLEVEL;
675	static struct coro *xnext;
676		676
677	if (prev != next)	677	if (prev != next)
678	{	678	{
679	xnext = next;	679	/* has this coro been created yet? */
680
681	if (next->mainstack)	680	if (next->mainstack)
682	{	681	{
		682	LOCK;
683	SAVE (prev, flags);	683	SAVE (prev, flags);
684	LOAD (next);	684	LOAD (next);
		685	UNLOCK;
685		686
686	/* mark this state as in-use */	687	/* mark this state as in-use */
687	next->mainstack = 0;	688	next->mainstack = 0;
688	next->tmps_ix = -2;	689	next->tmps_ix = -2;
689		690
…		…
708	continue_coro, (void *)next,	709	continue_coro, (void *)next,
709	next->stack->sptr, labs (next->stack->ssize));	710	next->stack->sptr, labs (next->stack->ssize));
710	}	711	}
711		712
712	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	713	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		714	prev->cursp = stacklevel;
713	/* don't add any code here */	715	/* don't add any code here */
714	}	716	}
715		717	else
		718	next->cursp = stacklevel;
716	}	719	}
717	else if (next->tmps_ix == -2)	720	else if (next->tmps_ix == -2)
718	croak ("tried to transfer to running coroutine");	721	croak ("tried to transfer to running coroutine");
719	else	722	else
720	{	723	{
		724	LOCK;
721	SAVE (prev, -1); /* first get rid of the old state */	725	SAVE (prev, -1); /* first get rid of the old state */
		726	UNLOCK;
722		727
		728	/* create the coroutine for the first time */
723	if (flags & TRANSFER_SAVE_CCTXT)	729	if (flags & TRANSFER_SAVE_CCTXT)
724	{	730	{
725	if (!prev->stack)	731	if (!prev->stack)
726	allocate_stack (prev, 0);	732	allocate_stack (prev, 0);
727		733
		734	/* the new coroutine starts with start_env again */
		735	PL_top_env = &PL_start_env;
		736
728	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	737	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
729	{	738	{
730	setup_coro (next);	739	setup_coro (next);
		740	next->cursp = stacklevel;
731		741
732	prev->stack->refcnt++;	742	prev->stack->refcnt++;
733	prev->stack->usecnt++;	743	prev->stack->usecnt++;
734	next->stack = prev->stack;	744	next->stack = prev->stack;
735	next->gencnt = prev->gencnt;	745	next->gencnt = prev->gencnt;
736	}	746	}
737	else	747	else
738	{	748	{
		749	assert (!next->stack);
739	allocate_stack (next, 1);	750	allocate_stack (next, 1);
740	coro_create (&(next->stack->cctx),	751	coro_create (&(next->stack->cctx),
741	setup_coro, (void *)next,	752	setup_coro, (void *)next,
742	next->stack->sptr, labs (next->stack->ssize));	753	next->stack->sptr, labs (next->stack->ssize));
743	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		755	prev->cursp = stacklevel;
744	/* don't add any code here */	756	/* don't add any code here */
745	}	757	}
746	}	758	}
747	else	759	else
		760	{
748	setup_coro (next);	761	setup_coro (next);
		762	next->cursp = stacklevel;
		763	}
749	}	764	}
750
751	/*
752	* xnext is now either prev or next, depending on wether
753	* we switched the c stack or not. that's why i use a global
754	* variable, that should become thread-specific at one point.
755	*/
756	xnext->cursp = stacklevel;
757	}	765	}
758	}
759		766
760	static struct coro *	767	LOCK;
761	sv_to_coro (SV arg, const char funcname, const char *varname)	768	if (coro_mortal)
762	{
763	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
764	{	769	{
765	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	770	SvREFCNT_dec (coro_mortal);
766		771	coro_mortal = 0;
767	if (!he)
768	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
769
770	arg = HeVAL(he);
771	}	772	}
772		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	\
773	/* must also be changed inside Coro::Cont::yield */	791	/* must also be changed inside Coro::Cont::yield */ \
774	if (SvROK(arg) && SvOBJECT(SvRV(arg))	792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
775	&& SvSTASH(SvRV(arg)) == coro_state_stash)
776	return (struct coro ) SvIV((SV)SvRV(arg));
777
778	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); \
779	/NORETURN/	794	\
780	}	795	} while(0)
		796
		797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
781		798
782	static void	799	static void
783	api_transfer(pTHX_ SV prev, SV next, int flags)	800	api_transfer(pTHX_ SV prev, SV next, int flags)
784	{	801	{
785	transfer(aTHX_	802	SV_CORO (prev, "Coro::transfer");
786	sv_to_coro (prev, "Coro::transfer", "prev"),	803	SV_CORO (next, "Coro::transfer");
787	sv_to_coro (next, "Coro::transfer", "next"),	804
788	flags);	805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
789	}	806	}
790		807
791	/ Coro ******************************************************************/	808	/ Coro ******************************************************************/
792		809
793	#define PRIO_MAX 3	810	#define PRIO_MAX 3
…		…
801	static GV coro_current, coro_idle;	818	static GV coro_current, coro_idle;
802	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
803	static int coro_nready;	820	static int coro_nready;
804		821
805	static void	822	static void
806	coro_enq (SV *sv)	823	coro_enq (pTHX_ SV *sv)
807	{	824	{
808	if (SvROK (sv))	825	SV **xprio;
809	{	826	int prio;
810	SV *hv = SvRV (sv);	827
811	if (SvTYPE (hv) == SVt_PVHV)	828	if (SvTYPE (sv) != SVt_PVHV)
812	{
813	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);
814	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
815
816	prio = prio > PRIO_MAX ? PRIO_MAX
817	: prio < PRIO_MIN ? PRIO_MIN
818	: prio;
819
820	av_push (coro_ready [prio - PRIO_MIN], sv);
821	coro_nready++;
822
823	return;
824	}
825	}
826
827	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++;
828	}	840	}
829		841
830	static SV *	842	static SV *
831	coro_deq (int min_prio)	843	coro_deq (pTHX_ int min_prio)
832	{	844	{
833	int prio = PRIO_MAX - PRIO_MIN;	845	int prio = PRIO_MAX - PRIO_MIN;
834		846
835	min_prio -= PRIO_MIN;	847	min_prio -= PRIO_MIN;
836	if (min_prio < 0)	848	if (min_prio < 0)
837	min_prio = 0;	849	min_prio = 0;
838		850
839	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
840	if (av_len (coro_ready[prio]) >= 0)	852	if (AvFILLp (coro_ready[prio]) >= 0)
841	{	853	{
842	coro_nready--;	854	coro_nready--;
843	return av_shift (coro_ready[prio]);	855	return av_shift (coro_ready[prio]);
844	}	856	}
845		857
…		…
847	}	859	}
848		860
849	static void	861	static void
850	api_ready (SV *coro)	862	api_ready (SV *coro)
851	{	863	{
		864	dTHX;
		865
		866	if (SvROK (coro))
		867	coro = SvRV (coro);
		868
		869	LOCK;
852	coro_enq (SvREFCNT_inc (coro));	870	coro_enq (aTHX_ SvREFCNT_inc (coro));
		871	UNLOCK;
853	}	872	}
854		873
855	static void	874	static void
856	api_schedule (int cede)	875	api_schedule (void)
857	{	876	{
		877	dTHX;
		878
858	SV prev, next;	879	SV prev, next;
859		880
		881	LOCK;
		882
860	prev = GvSV (coro_current);	883	prev = SvRV (GvSV (coro_current));
861
862	if (cede)
863	coro_enq (SvREFCNT_inc (prev));
864
865	next = coro_deq (PRIO_MIN);	884	next = coro_deq (aTHX_ PRIO_MIN);
866		885
867	if (!next)	886	if (!next)
868	next = SvREFCNT_inc (GvSV (coro_idle));	887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
869		888
870	GvSV (coro_current) = SvREFCNT_inc (next);	889	/* free this only after the transfer */
871	transfer (aTHX_	890	coro_mortal = prev;
872	sv_to_coro (prev, "Coro::schedule", "current coroutine"),	891	SV_CORO (prev, "Coro::schedule");
873	sv_to_coro (next, "Coro::schedule", "next coroutine"),	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),
874	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
875	SvREFCNT_dec (next);	901	}
876	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 ();
877	}	913	}
878		914
879	MODULE = Coro::State PACKAGE = Coro::State	915	MODULE = Coro::State PACKAGE = Coro::State
880		916
881	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
882		918
883	BOOT:	919	BOOT:
884	{ /* {} 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
885	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
886	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
887	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
888		929
889	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
890	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
891	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
892	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
893
894	if (!padlist_cache)
895	padlist_cache = newHV ();
896		934
897	main_mainstack = PL_mainstack;	935	main_mainstack = PL_mainstack;
898		936
899	coroapi.ver = CORO_API_VERSION;	937	coroapi.ver = CORO_API_VERSION;
900	coroapi.transfer = api_transfer;	938	coroapi.transfer = api_transfer;
…		…
908	Coro__State coro;	946	Coro__State coro;
909		947
910	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
911	croak ("Coro::State::_newprocess expects an arrayref");	949	croak ("Coro::State::_newprocess expects an arrayref");
912		950
913	New (0, coro, 1, struct coro);	951	Newz (0, coro, 1, struct coro);
914		952
915	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
916	coro->mainstack = 0; /* actual work is done inside transfer */	954	/coro->mainstack = 0; //actual work is done inside transfer /
917	coro->stack = 0;	955	/coro->stack = 0;/
918		956
919	RETVAL = coro;	957	RETVAL = coro;
920	OUTPUT:	958	OUTPUT:
921	RETVAL	959	RETVAL
922		960
923	void	961	void
924	transfer(prev, next, flags)	962	transfer(prev, next, flags)
925	Coro::State_or_hashref prev	963	SV *prev
926	Coro::State_or_hashref next	964	SV *next
927	int flags	965	int flags
928	PROTOTYPE: @	966	PROTOTYPE: @
929	CODE:	967	CODE:
930	PUTBACK;	968	PUTBACK;
		969	SV_CORO (next, "Coro::transfer");
		970	SV_CORO (prev, "Coro::transfer");
931	transfer (aTHX_ prev, next, flags);	971	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
932	SPAGAIN;	972	SPAGAIN;
933		973
934	void	974	void
935	DESTROY(coro)	975	DESTROY(coro)
936	Coro::State coro	976	Coro::State coro
…		…
939	if (coro->mainstack && coro->mainstack != main_mainstack)	979	if (coro->mainstack && coro->mainstack != main_mainstack)
940	{	980	{
941	struct coro temp;	981	struct coro temp;
942		982
943	PUTBACK;	983	PUTBACK;
944	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	984	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
945	LOAD(aTHX_ coro);	985	LOAD (aTHX_ coro);
946	SPAGAIN;	986	SPAGAIN;
947		987
948	destroy_stacks (aTHX);	988	destroy_stacks (aTHX);
949		989
950	LOAD((&temp)); /* this will get rid of defsv etc.. */	990	LOAD ((&temp)); /* this will get rid of defsv etc.. */
951	SPAGAIN;	991	SPAGAIN;
952		992
953	coro->mainstack = 0;	993	coro->mainstack = 0;
954	}	994	}
955		995
956	deallocate_stack (coro);	996	deallocate_stack (coro);
957		997	SvREFCNT_dec (coro->args);
958	Safefree (coro);	998	Safefree (coro);
959
960	void
961	flush()
962	CODE:
963	#ifdef MAY_FLUSH
964	flush_padlist_cache ();
965	#endif
966		999
967	void	1000	void
968	_exit(code)	1001	_exit(code)
969	int code	1002	int code
970	PROTOTYPE: $	1003	PROTOTYPE: $
971	CODE:	1004	CODE:
972	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
973	_exit (code);	1005	_exit (code);
974	#else
975	signal (SIGTERM, SIG_DFL);
976	raise (SIGTERM);
977	exit (code);
978	#endif
979		1006
980	MODULE = Coro::State PACKAGE = Coro::Cont	1007	MODULE = Coro::State PACKAGE = Coro::Cont
981
982	# this is slightly dirty (should expose a c-level api)
983		1008
984	void	1009	void
985	yield(...)	1010	yield(...)
986	PROTOTYPE: @	1011	PROTOTYPE: @
987	CODE:	1012	CODE:
988	static SV *returnstk;	1013	SV *yieldstack;
989	SV *sv;	1014	SV *sv;
990	AV *defav = GvAV (PL_defgv);	1015	AV *defav = GvAV (PL_defgv);
991	struct coro prev, next;	1016	struct coro prev, next;
992		1017
993	if (!returnstk)	1018	yieldstack = *hv_fetch (
994	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1019	(HV *)SvRV (GvSV (coro_current)),
		1020	"yieldstack", sizeof ("yieldstack") - 1,
		1021	0
		1022	);
995		1023
996	/* set up @_ -- ugly */	1024	/* set up @_ -- ugly */
997	av_clear (defav);	1025	av_clear (defav);
998	av_fill (defav, items - 1);	1026	av_fill (defav, items - 1);
999	while (items--)	1027	while (items--)
1000	av_store (defav, items, SvREFCNT_inc (ST(items)));	1028	av_store (defav, items, SvREFCNT_inc (ST(items)));
1001		1029
1002	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1003	sv = av_pop ((AV *)SvRV (returnstk));	1030	sv = av_pop ((AV *)SvRV (yieldstack));
1004	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))));
1005	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))));
1006	SvREFCNT_dec (sv);	1033	SvREFCNT_dec (sv);
1007		1034
1008	transfer(aTHX_ prev, next, 0);	1035	transfer (aTHX_ prev, next, 0);
1009		1036
1010	MODULE = Coro::State PACKAGE = Coro	1037	MODULE = Coro::State PACKAGE = Coro
1011
1012	# this is slightly dirty (should expose a c-level api)
1013		1038
1014	BOOT:	1039	BOOT:
1015	{	1040	{
1016	int i;	1041	int i;
1017	HV *stash = gv_stashpv ("Coro", TRUE);	1042	HV *stash = gv_stashpv ("Coro", TRUE);
…		…
1031		1056
1032	{	1057	{
1033	SV *sv = perl_get_sv("Coro::API", 1);	1058	SV *sv = perl_get_sv("Coro::API", 1);
1034		1059
1035	coroapi.schedule = api_schedule;	1060	coroapi.schedule = api_schedule;
		1061	coroapi.cede = api_cede;
1036	coroapi.ready = api_ready;	1062	coroapi.ready = api_ready;
1037	coroapi.nready = &coro_nready;	1063	coroapi.nready = &coro_nready;
1038	coroapi.current = coro_current;	1064	coroapi.current = coro_current;
1039		1065
1040	GCoroAPI = &coroapi;	1066	GCoroAPI = &coroapi;
1041	sv_setiv(sv, (IV)&coroapi);	1067	sv_setiv (sv, (IV)&coroapi);
1042	SvREADONLY_on(sv);	1068	SvREADONLY_on (sv);
1043	}	1069	}
1044	}	1070	}
		1071
		1072	#if !PERL_MICRO
1045		1073
1046	void	1074	void
1047	ready(self)	1075	ready(self)
1048	SV * self	1076	SV * self
1049	PROTOTYPE: $	1077	PROTOTYPE: $
1050	CODE:	1078	CODE:
1051	api_ready (self);	1079	api_ready (self);
		1080
		1081	#endif
1052		1082
1053	int	1083	int
1054	nready(...)	1084	nready(...)
1055	PROTOTYPE:	1085	PROTOTYPE:
1056	CODE:	1086	CODE:
…		…
1059	RETVAL	1089	RETVAL
1060		1090
1061	void	1091	void
1062	schedule(...)	1092	schedule(...)
1063	PROTOTYPE:	1093	PROTOTYPE:
1064	ALIAS:
1065	cede = 1
1066	CODE:	1094	CODE:
1067	api_schedule (ix);	1095	api_schedule ();
1068		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 1.38 by root, Wed Nov 7 00:21:06 2001 UTC vs. Revision 1.82 by root, Mon Nov 20 22:26:16 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.38 by root, Wed Nov 7 00:21:06 2001 UTC vs.
Revision 1.82 by root, Mon Nov 20 22:26:16 2006 UTC