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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC vs.
Revision 1.82 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_ANON
13	# ifdef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
14	# define MAP_ANON MAP_ANONYMOUS	46	# ifdef MAP_ANON
		47	# define MAP_ANONYMOUS MAP_ANON
15	# else	48	# else
16	# undef HAVE_MMAP	49	# undef HAVE_MMAP
17	# endif	50	# endif
18	# endif	51	# endif
		52	# include <limits.h>
		53	# ifndef PAGESIZE
		54	# define PAGESIZE pagesize
		55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		56	static long pagesize;
		57	# else
		58	# define BOOT_PAGESIZE
19	#endif	59	# endif
20
21	#define MAY_FLUSH /* increases codesize */
22
23	/* perl-related */
24	#define TRANSFER_SAVE_DEFAV 0x00000001
25	#define TRANSFER_SAVE_DEFSV 0x00000002
26	#define TRANSFER_SAVE_ERRSV 0x00000004
27	/* c-related */
28	#define TRANSFER_SAVE_CCTXT 0x00000008
29	#ifdef CORO_LAZY_STACK
30	# define TRANSFER_LAZY_STACK 0x00000010
31	#else
32	# define TRANSFER_LAZY_STACK 0x00000000
33	#endif	60	#endif
34
35	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
36	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
37		61
38	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
39	#define UCORO_STATE "_coro_state"	63	#define UCORO_STATE "_coro_state"
40		64
41	/* 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
42	* to the current C stack pointer. It's property is that it changes with each call	66	* to the current C stack pointer. Its property is that it changes with each call
43	* and should be unique. */	67	* and should be unique. */
44	#define dSTACKLEVEL void *stacklevel = &stacklevel	68	#define dSTACKLEVEL void *stacklevel = &stacklevel
45		69
		70	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		71
46	#define labs(l) ((l) >= 0 ? (l) : -(l))	72	#define labs(l) ((l) >= 0 ? (l) : -(l))
		73
		74	#include "CoroAPI.h"
		75
		76	#ifdef USE_ITHREADS
		77	static perl_mutex coro_mutex;
		78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		80	#else
		81	# define LOCK (void)0
		82	# define UNLOCK (void)0
		83	#endif
		84
		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 */
47		91
48	/* 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... */
49	typedef struct {	93	typedef struct {
50	int refcnt; /* pointer reference counter */	94	int refcnt; /* pointer reference counter */
51	int usecnt; /* shared by how many coroutines */	95	int usecnt; /* shared by how many coroutines */
77	AV *curstack;	121	AV *curstack;
78	AV *mainstack;	122	AV *mainstack;
79	SV **stack_sp;	123	SV **stack_sp;
80	OP *op;	124	OP *op;
81	SV **curpad;	125	SV **curpad;
		126	AV *comppad;
		127	CV *compcv;
82	SV **stack_base;	128	SV **stack_base;
83	SV **stack_max;	129	SV **stack_max;
84	SV **tmps_stack;	130	SV **tmps_stack;
85	I32 tmps_floor;	131	I32 tmps_floor;
86	I32 tmps_ix;	132	I32 tmps_ix;
…		…
95	I32 savestack_ix;	141	I32 savestack_ix;
96	I32 savestack_max;	142	I32 savestack_max;
97	OP **retstack;	143	OP **retstack;
98	I32 retstack_ix;	144	I32 retstack_ix;
99	I32 retstack_max;	145	I32 retstack_max;
		146	PMOP *curpm;
100	COP *curcop;	147	COP *curcop;
101	JMPENV *top_env;	148	JMPENV *top_env;
102		149
103	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
104	AV *args;	151	AV *args;
105	};	152	};
106		153
107	typedef struct coro *Coro__State;	154	typedef struct coro *Coro__State;
108	typedef struct coro *Coro__State_or_hashref;	155	typedef struct coro *Coro__State_or_hashref;
109		156
110	static AV main_mainstack; / used to differentiate between $main and others */	157	static AV *
111	static HV *coro_state_stash;	158	coro_clone_padlist (pTHX_ CV *cv)
112	static SV *ucoro_state_sv;
113	static U32 ucoro_state_hash;
114	static HV *padlist_cache;
115
116	/* for Coro.pm */
117	static GV coro_current, coro_idle;
118	static AV *coro_ready;
119
120	/* mostly copied from op.c:cv_clone2 */
121	STATIC AV *
122	clone_padlist (AV *protopadlist)
123	{	159	{
124	AV *av;	160	AV *padlist = CvPADLIST (cv);
125	I32 ix;
126	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
127	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
128	SV **pname = AvARRAY (protopad_name);
129	SV **ppad = AvARRAY (protopad);
130	I32 fname = AvFILLp (protopad_name);
131	I32 fpad = AvFILLp (protopad);
132	AV newpadlist, newpad_name, *newpad;	161	AV newpadlist, newpad;
133	SV **npad;
134
135	newpad_name = newAV ();
136	for (ix = fname; ix >= 0; ix--)
137	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
138
139	newpad = newAV ();
140	av_fill (newpad, AvFILLp (protopad));
141	npad = AvARRAY (newpad);
142		162
143	newpadlist = newAV ();	163	newpadlist = newAV ();
144	AvREAL_off (newpadlist);	164	AvREAL_off (newpadlist);
145	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)));
146	av_store (newpadlist, 1, (SV *) newpad);	174	av_store (newpadlist, 1, (SV *)newpad);
147		175
148	av = newAV (); /* will be @_ */	176	return newpadlist;
149	av_extend (av, 0);	177	}
150	av_store (newpad, 0, (SV *) av);
151	AvFLAGS (av) = AVf_REIFY;
152		178
153	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))
154	{	184	{
155	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	185	I32 i = AvFILLp (padlist);
156	if (namesv && namesv != &PL_sv_undef)	186	while (i >= 0)
157	{	187	{
158	char name = SvPVX (namesv); / XXX */	188	SV **svp = av_fetch (padlist, i--, FALSE);
159	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	189	if (svp)
160	{ /* lexical from outside? */
161	npad[ix] = SvREFCNT_inc (ppad[ix]);
162	}	190	{
163	else
164	{ /* our own lexical */
165	SV *sv;	191	SV *sv;
166	if (*name == '&')	192	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
167	sv = SvREFCNT_inc (ppad[ix]);	193	SvREFCNT_dec (sv);
168	else if (*name == '@')	194
169	sv = (SV *) newAV ();	195	SvREFCNT_dec (*svp);
170	else if (*name == '%')
171	sv = (SV *) newHV ();
172	else
173	sv = NEWSV (0, 0);
174	if (!SvPADBUSY (sv))
175	SvPADMY_on (sv);
176	npad[ix] = sv;
177	}	196	}
178	}	197	}
179	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	198
180	{	199	SvREFCNT_dec ((SV*)padlist);
181	npad[ix] = SvREFCNT_inc (ppad[ix]);
182	}
183	else
184	{
185	SV *sv = NEWSV (0, 0);
186	SvPADTMP_on (sv);
187	npad[ix] = sv;
188	}
189	}	200	}
		201	}
190		202
191	#if 0 /* return -ENOTUNDERSTOOD */	203	static int
192	/* 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;
193		208
194	for (ix = fpad; ix > 0; ix--) {	209	/* casting is fun. */
195	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
196	if (namesv	211	free_padlist (aTHX_ padlist);
197	&& namesv != &PL_sv_undef	212
198	&& !(SvFLAGS(namesv) & SVf_FAKE)	213	SvREFCNT_dec (av);
199	&& *SvPVX(namesv) == '&'	214
200	&& CvCLONE(ppad[ix]))	215	return 0;
201	{	216	}
202	CV kid = cv_clone((CV)ppad[ix]);	217
203	SvREFCNT_dec(ppad[ix]);	218	#define PERL_MAGIC_coro PERL_MAGIC_ext
204	CvCLONE_on(kid);	219
205	SvPADMY_on(kid);	220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
206	npad[ix] = (SV*)kid;	221
207	}	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 ();
208	}	255	}
209	#endif
210		256
211	return newpadlist;
212	}
213
214	#ifdef MAY_FLUSH
215	STATIC AV *
216	free_padlist (AV *padlist)
217	{
218	/* may be during global destruction */
219	if (SvREFCNT(padlist))
220	{
221	I32 i = AvFILLp(padlist);
222	while (i >= 0)
223	{
224	SV **svp = av_fetch(padlist, i--, FALSE);
225	SV sv = svp ? svp : Nullsv;
226	if (sv)
227	SvREFCNT_dec(sv);
228	}
229
230	SvREFCNT_dec((SV*)padlist);
231	}
232	}
233	#endif
234
235	/* the next two functions merely cache the padlists */
236	STATIC void
237	get_padlist (CV *cv)
238	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
240
241	if (he && AvFILLp ((AV )he) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
243	else
244	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
245	}
246
247	STATIC void
248	put_padlist (CV *cv)
249	{
250	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
251
252	if (SvTYPE (*he) != SVt_PVAV)
253	{
254	SvREFCNT_dec (*he);
255	he = (SV )newAV ();
256	}
257
258	av_push ((AV )he, (SV *)CvPADLIST (cv));	257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
259	}	258	}
260
261	#ifdef MAY_FLUSH
262	STATIC void
263	flush_padlist_cache ()
264	{
265	HV *hv = padlist_cache;
266	padlist_cache = newHV ();
267
268	if (hv_iterinit (hv))
269	{
270	HE *he;
271	AV *padlist;
272
273	while (!!(he = hv_iternext (hv)))
274	{
275	AV av = (AV )HeVAL(he);
276
277	/* casting is fun. */
278	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
279	free_padlist (padlist);
280	}
281	}
282
283	SvREFCNT_dec (hv);
284	}
285	#endif
286		259
287	#define SB do {	260	#define SB do {
288	#define SE } while (0)	261	#define SE } while (0)
289		262
290	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	263	#define LOAD(state) load_state(aTHX_ (state));
291	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
292		265
293	#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
294		267
295	static void	268	static void
296	load_state(pTHX_ Coro__State c)	269	load_state(pTHX_ Coro__State c)
297	{	270	{
298	PL_dowarn = c->dowarn;	271	PL_dowarn = c->dowarn;
…		…
302	PL_curstack = c->curstack;	275	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;	276	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;	277	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;	278	PL_op = c->op;
306	PL_curpad = c->curpad;	279	PL_curpad = c->curpad;
		280	PL_comppad = c->comppad;
		281	PL_compcv = c->compcv;
307	PL_stack_base = c->stack_base;	282	PL_stack_base = c->stack_base;
308	PL_stack_max = c->stack_max;	283	PL_stack_max = c->stack_max;
309	PL_tmps_stack = c->tmps_stack;	284	PL_tmps_stack = c->tmps_stack;
310	PL_tmps_floor = c->tmps_floor;	285	PL_tmps_floor = c->tmps_floor;
311	PL_tmps_ix = c->tmps_ix;	286	PL_tmps_ix = c->tmps_ix;
…		…
317	PL_scopestack_ix = c->scopestack_ix;	292	PL_scopestack_ix = c->scopestack_ix;
318	PL_scopestack_max = c->scopestack_max;	293	PL_scopestack_max = c->scopestack_max;
319	PL_savestack = c->savestack;	294	PL_savestack = c->savestack;
320	PL_savestack_ix = c->savestack_ix;	295	PL_savestack_ix = c->savestack_ix;
321	PL_savestack_max = c->savestack_max;	296	PL_savestack_max = c->savestack_max;
		297	#if PERL_VERSION < 9
322	PL_retstack = c->retstack;	298	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;	299	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;	300	PL_retstack_max = c->retstack_max;
		301	#endif
		302	PL_curpm = c->curpm;
325	PL_curcop = c->curcop;	303	PL_curcop = c->curcop;
326	PL_top_env = c->top_env;	304	PL_top_env = c->top_env;
327		305
328	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
329	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
338	{	316	{
339	AV padlist = (AV )POPs;	317	AV padlist = (AV )POPs;
340		318
341	if (padlist)	319	if (padlist)
342	{	320	{
343	put_padlist (cv); /* mark this padlist as available */	321	put_padlist (aTHX_ cv); /* mark this padlist as available */
344	CvPADLIST(cv) = padlist;	322	CvPADLIST(cv) = padlist;
345	#ifdef USE_THREADS
346	/CvOWNER(cv) = (struct perl_thread )POPs;*/
347	#endif
348	}	323	}
349		324
350	++CvDEPTH(cv);	325	++CvDEPTH(cv);
351	}	326	}
352		327
…		…
370		345
371	PUSHs (Nullsv);	346	PUSHs (Nullsv);
372	/* this loop was inspired by pp_caller */	347	/* this loop was inspired by pp_caller */
373	for (;;)	348	for (;;)
374	{	349	{
375	do	350	while (cxix >= 0)
376	{	351	{
377	PERL_CONTEXT *cx = &ccstk[cxix--];	352	PERL_CONTEXT *cx = &ccstk[cxix--];
378		353
379	if (CxTYPE(cx) == CXt_SUB)	354	if (CxTYPE(cx) == CXt_SUB)
380	{	355	{
381	CV *cv = cx->blk_sub.cv;	356	CV *cv = cx->blk_sub.cv;
382	if (CvDEPTH(cv))	357	if (CvDEPTH(cv))
383	{	358	{
384	#ifdef USE_THREADS
385	/XPUSHs ((SV )CvOWNER(cv));*/
386	/CvOWNER(cv) = 0;/
387	/error must unlock this cv etc.. etc.../
388	#endif
389	EXTEND (SP, CvDEPTH(cv)*2);	359	EXTEND (SP, CvDEPTH(cv)*2);
390		360
391	while (--CvDEPTH(cv))	361	while (--CvDEPTH(cv))
392	{	362	{
393	/* this tells the restore code to increment CvDEPTH */	363	/* this tells the restore code to increment CvDEPTH */
…		…
396	}	366	}
397		367
398	PUSHs ((SV *)CvPADLIST(cv));	368	PUSHs ((SV *)CvPADLIST(cv));
399	PUSHs ((SV *)cv);	369	PUSHs ((SV *)cv);
400		370
401	get_padlist (cv); /* this is a monster */	371	get_padlist (aTHX_ cv);
402	}	372	}
403	}	373	}
		374	#ifdef CXt_FORMAT
404	else if (CxTYPE(cx) == CXt_FORMAT)	375	else if (CxTYPE(cx) == CXt_FORMAT)
405	{	376	{
406	/* 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? */
407	/* my bold guess is as a simple, plain sub... */	378	/* my bold guess is as a simple, plain sub... */
408	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");
409	}	380	}
		381	#endif
410	}	382	}
411	while (cxix >= 0);
412		383
413	if (top_si->si_type == PERLSI_MAIN)	384	if (top_si->si_type == PERLSI_MAIN)
414	break;	385	break;
415		386
416	top_si = top_si->si_prev;	387	top_si = top_si->si_prev;
…		…
422	}	393	}
423		394
424	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;
425	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
426	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
427
428	/* I have not the slightest idea of why av_reify is necessary */
429	/* but if it's missing the defav contents magically get replaced sometimes */
430	if (c->defav)
431	av_reify (c->defav);
432		398
433	c->dowarn = PL_dowarn;	399	c->dowarn = PL_dowarn;
434	c->in_eval = PL_in_eval;	400	c->in_eval = PL_in_eval;
435		401
436	c->curstackinfo = PL_curstackinfo;	402	c->curstackinfo = PL_curstackinfo;
437	c->curstack = PL_curstack;	403	c->curstack = PL_curstack;
438	c->mainstack = PL_mainstack;	404	c->mainstack = PL_mainstack;
439	c->stack_sp = PL_stack_sp;	405	c->stack_sp = PL_stack_sp;
440	c->op = PL_op;	406	c->op = PL_op;
441	c->curpad = PL_curpad;	407	c->curpad = PL_curpad;
		408	c->comppad = PL_comppad;
		409	c->compcv = PL_compcv;
442	c->stack_base = PL_stack_base;	410	c->stack_base = PL_stack_base;
443	c->stack_max = PL_stack_max;	411	c->stack_max = PL_stack_max;
444	c->tmps_stack = PL_tmps_stack;	412	c->tmps_stack = PL_tmps_stack;
445	c->tmps_floor = PL_tmps_floor;	413	c->tmps_floor = PL_tmps_floor;
446	c->tmps_ix = PL_tmps_ix;	414	c->tmps_ix = PL_tmps_ix;
…		…
452	c->scopestack_ix = PL_scopestack_ix;	420	c->scopestack_ix = PL_scopestack_ix;
453	c->scopestack_max = PL_scopestack_max;	421	c->scopestack_max = PL_scopestack_max;
454	c->savestack = PL_savestack;	422	c->savestack = PL_savestack;
455	c->savestack_ix = PL_savestack_ix;	423	c->savestack_ix = PL_savestack_ix;
456	c->savestack_max = PL_savestack_max;	424	c->savestack_max = PL_savestack_max;
		425	#if PERL_VERSION < 9
457	c->retstack = PL_retstack;	426	c->retstack = PL_retstack;
458	c->retstack_ix = PL_retstack_ix;	427	c->retstack_ix = PL_retstack_ix;
459	c->retstack_max = PL_retstack_max;	428	c->retstack_max = PL_retstack_max;
		429	#endif
		430	c->curpm = PL_curpm;
460	c->curcop = PL_curcop;	431	c->curcop = PL_curcop;
461	c->top_env = PL_top_env;	432	c->top_env = PL_top_env;
462	}	433	}
463		434
464	/*	435	/*
465	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
466	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
467	* on the assumption that coroutines do not usually need	438	* on the (sometimes correct) assumption that coroutines do
468	* a lot of stackspace.	439	* not usually need a lot of stackspace.
469	*/	440	*/
470	STATIC void	441	static void
471	coro_init_stacks (pTHX)	442	coro_init_stacks (pTHX)
472	{	443	{
		444	LOCK;
		445
473	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
474	PL_curstackinfo->si_type = PERLSI_MAIN;	447	PL_curstackinfo->si_type = PERLSI_MAIN;
475	PL_curstack = PL_curstackinfo->si_stack;	448	PL_curstack = PL_curstackinfo->si_stack;
476	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
477		450
…		…
486		459
487	New(54,PL_markstack,16,I32);	460	New(54,PL_markstack,16,I32);
488	PL_markstack_ptr = PL_markstack;	461	PL_markstack_ptr = PL_markstack;
489	PL_markstack_max = PL_markstack + 16;	462	PL_markstack_max = PL_markstack + 16;
490		463
		464	#ifdef SET_MARK_OFFSET
491	SET_MARK_OFFSET;	465	SET_MARK_OFFSET;
		466	#endif
492		467
493	New(54,PL_scopestack,16,I32);	468	New(54,PL_scopestack,16,I32);
494	PL_scopestack_ix = 0;	469	PL_scopestack_ix = 0;
495	PL_scopestack_max = 16;	470	PL_scopestack_max = 16;
496		471
497	New(54,PL_savestack,96,ANY);	472	New(54,PL_savestack,96,ANY);
498	PL_savestack_ix = 0;	473	PL_savestack_ix = 0;
499	PL_savestack_max = 96;	474	PL_savestack_max = 96;
500		475
		476	#if PERL_VERSION < 9
501	New(54,PL_retstack,8,OP*);	477	New(54,PL_retstack,8,OP*);
502	PL_retstack_ix = 0;	478	PL_retstack_ix = 0;
503	PL_retstack_max = 8;	479	PL_retstack_max = 8;
		480	#endif
		481
		482	UNLOCK;
504	}	483	}
505		484
506	/*	485	/*
507	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
508	* still there is a memleak of 128 bytes...
509	*/	487	*/
510	STATIC void	488	static void
511	destroy_stacks(pTHX)	489	destroy_stacks(pTHX)
512	{	490	{
		491	if (!IN_DESTRUCT)
		492	{
513	/* is this ugly, I ask? */	493	/* is this ugly, I ask? */
514	while (PL_scopestack_ix)	494	LEAVE_SCOPE (0);
515	LEAVE;
516		495
517	/* sure it is, but more important: is it correct?? :/ */	496	/* sure it is, but more important: is it correct?? :/ */
518	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
519	FREETMPS;	497	FREETMPS;
		498
		499	/POPSTACK_TO (PL_mainstack);//D//use/
		500	}
520		501
521	while (PL_curstackinfo->si_next)	502	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	503	PL_curstackinfo = PL_curstackinfo->si_next;
523		504
524	while (PL_curstackinfo)	505	while (PL_curstackinfo)
525	{	506	{
526	PERL_SI *p = PL_curstackinfo->si_prev;	507	PERL_SI *p = PL_curstackinfo->si_prev;
527		508
528	{	509	{ /D//remove/
529	dSP;	510	dSP;
530	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
531	PUTBACK; /* possibly superfluous */	512	PUTBACK; /* possibly superfluous */
532	}	513	}
533		514
534	dounwind(-1);	515	if (!IN_DESTRUCT)
535		516	{
		517	dounwind (-1);/D//remove/
536	SvREFCNT_dec(PL_curstackinfo->si_stack);	518	SvREFCNT_dec (PL_curstackinfo->si_stack);
		519	}
		520
537	Safefree(PL_curstackinfo->si_cxstack);	521	Safefree (PL_curstackinfo->si_cxstack);
538	Safefree(PL_curstackinfo);	522	Safefree (PL_curstackinfo);
539	PL_curstackinfo = p;	523	PL_curstackinfo = p;
540	}	524	}
541		525
542	Safefree(PL_tmps_stack);	526	Safefree (PL_tmps_stack);
543	Safefree(PL_markstack);	527	Safefree (PL_markstack);
544	Safefree(PL_scopestack);	528	Safefree (PL_scopestack);
545	Safefree(PL_savestack);	529	Safefree (PL_savestack);
		530	#if PERL_VERSION < 9
546	Safefree(PL_retstack);	531	Safefree (PL_retstack);
		532	#endif
547	}	533	}
548		534
549	static void	535	static void
550	allocate_stack (Coro__State ctx, int alloc)	536	allocate_stack (Coro__State ctx, int alloc)
551	{	537	{
…		…
554	New (0, stack, 1, coro_stack);	540	New (0, stack, 1, coro_stack);
555		541
556	stack->refcnt = 1;	542	stack->refcnt = 1;
557	stack->usecnt = 1;	543	stack->usecnt = 1;
558	stack->gencnt = ctx->gencnt = 0;	544	stack->gencnt = ctx->gencnt = 0;
		545
559	if (alloc)	546	if (alloc)
560	{	547	{
561	#ifdef HAVE_MMAP	548	#if HAVE_MMAP
562	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 */
563	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);
564	if (stack->sptr == (void *)-1)	551	if (stack->sptr != (void *)-1)
565	#endif
566	{	552	{
567	/FIXME//D//* reasonable stack size! */	553	# if STACKGUARD
		554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		555	# endif
		556	}
		557	else
		558	#endif
		559	{
568	stack->ssize = -4096 * sizeof (long);	560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
569	New (0, stack->sptr, 4096, long);	561	New (0, stack->sptr, STACKSIZE, long);
570	}	562	}
571	}	563	}
572	else	564	else
573	stack->sptr = 0;	565	stack->sptr = 0;
574		566
…		…
588	{	580	{
589	#ifdef HAVE_MMAP	581	#ifdef HAVE_MMAP
590	if (stack->ssize > 0 && stack->sptr)	582	if (stack->ssize > 0 && stack->sptr)
591	munmap (stack->sptr, stack->ssize);	583	munmap (stack->sptr, stack->ssize);
592	else	584	else
593	#else	585	#endif
594	Safefree (stack->sptr);	586	Safefree (stack->sptr);
595	#endif	587
596	Safefree (stack);	588	Safefree (stack);
597	}	589	}
598	else if (ctx->gencnt == stack->gencnt)	590	else if (ctx->gencnt == stack->gencnt)
599	--stack->usecnt;	591	--stack->usecnt;
600	}	592	}
…		…
604	setup_coro (void *arg)	596	setup_coro (void *arg)
605	{	597	{
606	/*	598	/*
607	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
608	*/	600	*/
		601	dTHX;
609	dSP;	602	dSP;
610	Coro__State ctx = (Coro__State)arg;	603	Coro__State ctx = (Coro__State)arg;
611	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
612		605
613	coro_init_stacks (aTHX);	606	coro_init_stacks (aTHX);
614	/PL_curcop = 0;/	607	/PL_curcop = 0;/
615	/PL_in_eval = PL_in_eval;/ /* inherit */	608	/PL_in_eval = PL_in_eval;/ /* inherit */
616	SvREFCNT_dec (GvAV (PL_defgv));	609	SvREFCNT_dec (GvAV (PL_defgv));
617	GvAV (PL_defgv) = ctx->args;	610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
618		611
619	SPAGAIN;	612	SPAGAIN;
620		613
621	if (ctx->stack)	614	if (ctx->stack)
622	{	615	{
…		…
633	}	626	}
634	else	627	else
635	{	628	{
636	UNOP myop;	629	UNOP myop;
637		630
638	PL_op = (OP *)&myop;
639
640	Zero(&myop, 1, UNOP);	631	Zero(&myop, 1, UNOP);
641	myop.op_next = Nullop;	632	myop.op_next = Nullop;
642	myop.op_flags = OPf_WANT_VOID;	633	myop.op_flags = OPf_WANT_VOID;
		634
		635	PL_op = (OP *)&myop;
643		636
644	PUSHMARK(SP);	637	PUSHMARK(SP);
645	XPUSHs (sub_init);	638	XPUSHs (sub_init);
646	/*	639	/*
647	* the next line is slightly wrong, as PL_op->op_next	640	* the next line is slightly wrong, as PL_op->op_next
…		…
649	* that doesn't matter, though, since it is only	642	* that doesn't matter, though, since it is only
650	* pp_nextstate and we never return...	643	* pp_nextstate and we never return...
651	* ah yes, and I don't care anyways ;)	644	* ah yes, and I don't care anyways ;)
652	*/	645	*/
653	PUTBACK;	646	PUTBACK;
654	PL_op = pp_entersub();	647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
655	SPAGAIN;	648	SPAGAIN;
656		649
657	ENTER; /* necessary e.g. for dounwind */	650	ENTER; /* necessary e.g. for dounwind */
658	}	651	}
659	}	652	}
…		…
662	continue_coro (void *arg)	655	continue_coro (void *arg)
663	{	656	{
664	/*	657	/*
665	* this is a _very_ stripped down perl interpreter ;)	658	* this is a _very_ stripped down perl interpreter ;)
666	*/	659	*/
		660	dTHX;
667	Coro__State ctx = (Coro__State)arg;	661	Coro__State ctx = (Coro__State)arg;
668		662
669	/FIXME//* must set up top_env here */	663	PL_top_env = &PL_start_env;
		664
670	ctx->cursp = 0;	665	ctx->cursp = 0;
671	PL_op = PL_op->op_next;	666	PL_op = PL_op->op_next;
672	CALLRUNOPS(aTHX);	667	CALLRUNOPS(aTHX);
673		668
674	abort ();	669	abort ();
675	}	670	}
676		671
677	STATIC void	672	static void
678	transfer(pTHX_ struct coro prev, struct coro next, int flags)	673	transfer (pTHX_ struct coro prev, struct coro next, int flags)
679	{	674	{
680	dSP;
681	dSTACKLEVEL;	675	dSTACKLEVEL;
682		676
683	if (prev != next)	677	if (prev != next)
684	{	678	{
		679	/* has this coro been created yet? */
685	if (next->mainstack)	680	if (next->mainstack)
686	{	681	{
		682	LOCK;
687	SAVE (prev, flags);	683	SAVE (prev, flags);
688	LOAD (next);	684	LOAD (next);
		685	UNLOCK;
689		686
690	/* mark this state as in-use */	687	/* mark this state as in-use */
691	next->mainstack = 0;	688	next->mainstack = 0;
692	next->tmps_ix = -2;	689	next->tmps_ix = -2;
693		690
…		…
712	continue_coro, (void *)next,	709	continue_coro, (void *)next,
713	next->stack->sptr, labs (next->stack->ssize));	710	next->stack->sptr, labs (next->stack->ssize));
714	}	711	}
715		712
716	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 */
717	}	716	}
718		717	else
		718	next->cursp = stacklevel;
719	}	719	}
720	else if (next->tmps_ix == -2)	720	else if (next->tmps_ix == -2)
721	croak ("tried to transfer to running coroutine");	721	croak ("tried to transfer to running coroutine");
722	else	722	else
723	{	723	{
		724	LOCK;
724	SAVE (prev, -1); /* first get rid of the old state */	725	SAVE (prev, -1); /* first get rid of the old state */
		726	UNLOCK;
725		727
		728	/* create the coroutine for the first time */
726	if (flags & TRANSFER_SAVE_CCTXT)	729	if (flags & TRANSFER_SAVE_CCTXT)
727	{	730	{
728	if (!prev->stack)	731	if (!prev->stack)
729	allocate_stack (prev, 0);	732	allocate_stack (prev, 0);
730		733
		734	/* the new coroutine starts with start_env again */
		735	PL_top_env = &PL_start_env;
		736
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	737	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732	{	738	{
733	setup_coro (next);	739	setup_coro (next);
		740	next->cursp = stacklevel;
734		741
735	prev->stack->refcnt++;	742	prev->stack->refcnt++;
736	prev->stack->usecnt++;	743	prev->stack->usecnt++;
737	next->stack = prev->stack;	744	next->stack = prev->stack;
738	next->gencnt = prev->gencnt;	745	next->gencnt = prev->gencnt;
739	}	746	}
740	else	747	else
741	{	748	{
		749	assert (!next->stack);
742	allocate_stack (next, 1);	750	allocate_stack (next, 1);
743	coro_create (&(next->stack->cctx),	751	coro_create (&(next->stack->cctx),
744	setup_coro, (void *)next,	752	setup_coro, (void *)next,
745	next->stack->sptr, labs (next->stack->ssize));	753	next->stack->sptr, labs (next->stack->ssize));
746	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 */
747	}	757	}
748	}	758	}
749	else	759	else
		760	{
750	setup_coro (next);	761	setup_coro (next);
		762	next->cursp = stacklevel;
		763	}
751	}	764	}
752	}	765	}
753		766
754	next->cursp = stacklevel;	767	LOCK;
755	}	768	if (coro_mortal)
756
757	static struct coro *
758	sv_to_coro (SV arg, const char funcname, const char *varname)
759	{
760	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
761	{	769	{
		770	SvREFCNT_dec (coro_mortal);
		771	coro_mortal = 0;
		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	{ \
762	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
763		784	\
764	if (!he)	785	if (!he) \
765	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);	786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
766		787	\
767	arg = HeVAL(he);	788	(sv) = SvRV (HeVAL(he)); \
768	}	789	} \
769		790	\
770	/* must also be changed inside Coro::Cont::yield */	791	/* must also be changed inside Coro::Cont::yield */ \
771	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
772	return (struct coro ) SvIV((SV)SvRV(arg));
773	else
774	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); \
		794	\
		795	} while(0)
		796
		797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
		798
		799	static void
		800	api_transfer(pTHX_ SV prev, SV next, int flags)
		801	{
		802	SV_CORO (prev, "Coro::transfer");
		803	SV_CORO (next, "Coro::transfer");
		804
		805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		806	}
		807
		808	/ Coro ******************************************************************/
		809
		810	#define PRIO_MAX 3
		811	#define PRIO_HIGH 1
		812	#define PRIO_NORMAL 0
		813	#define PRIO_LOW -1
		814	#define PRIO_IDLE -3
		815	#define PRIO_MIN -4
		816
		817	/* for Coro.pm */
		818	static GV coro_current, coro_idle;
		819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		820	static int coro_nready;
		821
		822	static void
		823	coro_enq (pTHX_ SV *sv)
		824	{
		825	SV **xprio;
		826	int prio;
		827
		828	if (SvTYPE (sv) != SVt_PVHV)
		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++;
		840	}
		841
		842	static SV *
		843	coro_deq (pTHX_ int min_prio)
		844	{
		845	int prio = PRIO_MAX - PRIO_MIN;
		846
		847	min_prio -= PRIO_MIN;
		848	if (min_prio < 0)
		849	min_prio = 0;
		850
		851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		852	if (AvFILLp (coro_ready[prio]) >= 0)
		853	{
		854	coro_nready--;
		855	return av_shift (coro_ready[prio]);
		856	}
		857
		858	return 0;
		859	}
		860
		861	static void
		862	api_ready (SV *coro)
		863	{
		864	dTHX;
		865
		866	if (SvROK (coro))
		867	coro = SvRV (coro);
		868
		869	LOCK;
		870	coro_enq (aTHX_ SvREFCNT_inc (coro));
		871	UNLOCK;
		872	}
		873
		874	static void
		875	api_schedule (void)
		876	{
		877	dTHX;
		878
		879	SV prev, next;
		880
		881	LOCK;
		882
		883	prev = SvRV (GvSV (coro_current));
		884	next = coro_deq (aTHX_ PRIO_MIN);
		885
		886	if (!next)
		887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		888
		889	/* free this only after the transfer */
		890	coro_mortal = prev;
		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),
		900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		901	}
		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 ();
775	}	913	}
776		914
777	MODULE = Coro::State PACKAGE = Coro::State	915	MODULE = Coro::State PACKAGE = Coro::State
778		916
779	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
780		918
781	BOOT:	919	BOOT:
782	{ /* {} 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
783	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
784	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
785	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
786		929
787	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
788	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
789	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
790	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
791		934
792	if (!padlist_cache)
793	padlist_cache = newHV ();
794
795	main_mainstack = PL_mainstack;	935	main_mainstack = PL_mainstack;
		936
		937	coroapi.ver = CORO_API_VERSION;
		938	coroapi.transfer = api_transfer;
796	}	939	}
797		940
798	Coro::State	941	Coro::State
799	_newprocess(args)	942	_newprocess(args)
800	SV * args	943	SV * args
…		…
803	Coro__State coro;	946	Coro__State coro;
804		947
805	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
806	croak ("Coro::State::_newprocess expects an arrayref");	949	croak ("Coro::State::_newprocess expects an arrayref");
807		950
808	New (0, coro, 1, struct coro);	951	Newz (0, coro, 1, struct coro);
809		952
810	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
811	coro->mainstack = 0; /* actual work is done inside transfer */	954	/coro->mainstack = 0; //actual work is done inside transfer /
812	coro->stack = 0;	955	/coro->stack = 0;/
813		956
814	RETVAL = coro;	957	RETVAL = coro;
815	OUTPUT:	958	OUTPUT:
816	RETVAL	959	RETVAL
817		960
818	void	961	void
819	transfer(prev, next, flags)	962	transfer(prev, next, flags)
820	Coro::State_or_hashref prev	963	SV *prev
821	Coro::State_or_hashref next	964	SV *next
822	int flags	965	int flags
823	PROTOTYPE: @	966	PROTOTYPE: @
824	CODE:	967	CODE:
825	PUTBACK;	968	PUTBACK;
		969	SV_CORO (next, "Coro::transfer");
		970	SV_CORO (prev, "Coro::transfer");
826	transfer (aTHX_ prev, next, flags);	971	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
827	SPAGAIN;	972	SPAGAIN;
828		973
829	void	974	void
830	DESTROY(coro)	975	DESTROY(coro)
831	Coro::State coro	976	Coro::State coro
…		…
833		978
834	if (coro->mainstack && coro->mainstack != main_mainstack)	979	if (coro->mainstack && coro->mainstack != main_mainstack)
835	{	980	{
836	struct coro temp;	981	struct coro temp;
837		982
		983	PUTBACK;
838	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	984	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
839	LOAD(aTHX_ coro);	985	LOAD (aTHX_ coro);
		986	SPAGAIN;
840		987
841	destroy_stacks (aTHX);	988	destroy_stacks (aTHX);
842		989
843	LOAD((&temp)); /* this will get rid of defsv etc.. */	990	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		991	SPAGAIN;
844		992
845	coro->mainstack = 0;	993	coro->mainstack = 0;
846	}	994	}
847		995
848	deallocate_stack (coro);	996	deallocate_stack (coro);
849		997	SvREFCNT_dec (coro->args);
850	Safefree (coro);	998	Safefree (coro);
851
852	void
853	flush()
854	CODE:
855	#ifdef MAY_FLUSH
856	flush_padlist_cache ();
857	#endif
858		999
859	void	1000	void
860	_exit(code)	1001	_exit(code)
861	int code	1002	int code
862	PROTOTYPE: $	1003	PROTOTYPE: $
863	CODE:	1004	CODE:
864	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
865	_exit (code);	1005	_exit (code);
866	#else
867	signal (SIGTERM, SIG_DFL);
868	raise (SIGTERM);
869	exit (code);
870	#endif
871		1006
872	MODULE = Coro::State PACKAGE = Coro::Cont	1007	MODULE = Coro::State PACKAGE = Coro::Cont
873
874	# this is slightly dirty (should expose a c-level api)
875		1008
876	void	1009	void
877	yield(...)	1010	yield(...)
878	PROTOTYPE: @	1011	PROTOTYPE: @
879	CODE:	1012	CODE:
880	static SV *returnstk;	1013	SV *yieldstack;
881	SV *sv;	1014	SV *sv;
882	AV *defav = GvAV (PL_defgv);	1015	AV *defav = GvAV (PL_defgv);
883	struct coro prev, next;	1016	struct coro prev, next;
884		1017
885	if (!returnstk)	1018	yieldstack = *hv_fetch (
886	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1019	(HV *)SvRV (GvSV (coro_current)),
		1020	"yieldstack", sizeof ("yieldstack") - 1,
		1021	0
		1022	);
887		1023
888	/* set up @_ -- ugly */	1024	/* set up @_ -- ugly */
889	av_clear (defav);	1025	av_clear (defav);
890	av_fill (defav, items - 1);	1026	av_fill (defav, items - 1);
891	while (items--)	1027	while (items--)
892	av_store (defav, items, SvREFCNT_inc (ST(items)));	1028	av_store (defav, items, SvREFCNT_inc (ST(items)));
893		1029
894	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
895	sv = av_pop ((AV *)SvRV (returnstk));	1030	sv = av_pop ((AV *)SvRV (yieldstack));
896	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))));
897	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))));
898	SvREFCNT_dec (sv);	1033	SvREFCNT_dec (sv);
899		1034
900	transfer(aTHX_ prev, next, 0);	1035	transfer (aTHX_ prev, next, 0);
901		1036
902	MODULE = Coro::State PACKAGE = Coro	1037	MODULE = Coro::State PACKAGE = Coro
903		1038
904	# this is slightly dirty (should expose a c-level api)
905
906	BOOT:	1039	BOOT:
907	{	1040	{
		1041	int i;
		1042	HV *stash = gv_stashpv ("Coro", TRUE);
		1043
		1044	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1045	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1046	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1047	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1048	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1049	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1050
908	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1051	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
909	coro_ready = newAV ();
910	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1052	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1053
		1054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		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	}
911	}	1070	}
		1071
		1072	#if !PERL_MICRO
912		1073
913	void	1074	void
914	ready(self)	1075	ready(self)
915	SV * self	1076	SV * self
		1077	PROTOTYPE: $
916	CODE:	1078	CODE:
917	av_push (coro_ready, SvREFCNT_inc (self));	1079	api_ready (self);
		1080
		1081	#endif
		1082
		1083	int
		1084	nready(...)
		1085	PROTOTYPE:
		1086	CODE:
		1087	RETVAL = coro_nready;
		1088	OUTPUT:
		1089	RETVAL
918		1090
919	void	1091	void
920	schedule(...)	1092	schedule(...)
921	ALIAS:	1093	PROTOTYPE:
922	cede = 1
923	CODE:	1094	CODE:
924	SV *prev = GvSV (coro_current);	1095	api_schedule ();
925	SV *next = av_shift (coro_ready);
926		1096
927	if (next == &PL_sv_undef)	1097	void
928	next = SvREFCNT_inc (GvSV (coro_idle));	1098	cede(...)
		1099	PROTOTYPE:
		1100	CODE:
		1101	api_cede ();
929		1102
930	if (ix)	1103	# and these are hacks
931	av_push (coro_ready, SvREFCNT_inc (prev));	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;
932		1114
933	GvSV (coro_current) = SvREFCNT_inc (next);	1115	data.errorno = errno;
934	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),	1116	data.laststype = PL_laststype;
935	sv_to_coro (next, "Coro::schedule", "next coroutine"),	1117	data.laststatval = PL_laststatval;
936	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	1118	data.statcache = PL_statcache;
937	SvREFCNT_dec (next);	1119
938	SvREFCNT_dec (prev);	1120	RETVAL = newSVpvn ((char *)&data, sizeof data);
939		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 1.21 by root, Sat Aug 11 19:59:19 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 1.21 by root, Sat Aug 11 19:59:19 2001 UTC vs.
Revision 1.82 by root, Mon Nov 20 22:26:16 2006 UTC