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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.73 by root, Sat Feb 4 06:01:13 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"
		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
		32	#include <errno.h>
		33	#include <signal.h>
6		34
7	#ifdef HAVE_MMAP	35	#ifdef HAVE_MMAP
8	# include <unistd.h>	36	# include <unistd.h>
9	# include <sys/mman.h>	37	# include <sys/mman.h>
		38	# ifndef MAP_ANONYMOUS
		39	# ifdef MAP_ANON
		40	# define MAP_ANONYMOUS MAP_ANON
		41	# else
		42	# undef HAVE_MMAP
		43	# endif
10	#endif	44	# endif
11
12	#define MAY_FLUSH /* increases codesize */
13
14	/* perl-related */
15	#define TRANSFER_SAVE_DEFAV 0x00000001
16	#define TRANSFER_SAVE_DEFSV 0x00000002
17	#define TRANSFER_SAVE_ERRSV 0x00000004
18	/* c-related */
19	#define TRANSFER_SAVE_CCTXT 0x00000008
20	#ifdef CORO_LAZY_STACK
21	# define TRANSFER_LAZY_STACK 0x00000010
22	#else
23	# define TRANSFER_LAZY_STACK 0x00000000
24	#endif	45	#endif
25
26	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
27	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
28		46
29	#define SUB_INIT "Coro::State::initialize"	47	#define SUB_INIT "Coro::State::initialize"
30	#define UCORO_STATE "_coro_state"	48	#define UCORO_STATE "_coro_state"
31		49
32	/* The next macro should delcare a variable stacklevel that contains and approximation	50	/* The next macro should declare a variable stacklevel that contains and approximation
33	* to the current C stack pointer. It's property is that it changes with each call	51	* to the current C stack pointer. Its property is that it changes with each call
34	* and should be unique. */	52	* and should be unique. */
35	#define dSTACKLEVEL void *stacklevel = &stacklevel	53	#define dSTACKLEVEL void *stacklevel = &stacklevel
36		54
		55	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		56
37	#define labs(l) ((l) >= 0 ? (l) : -(l))	57	#define labs(l) ((l) >= 0 ? (l) : -(l))
		58
		59	#include "CoroAPI.h"
		60
		61	#ifdef USE_ITHREADS
		62	static perl_mutex coro_mutex;
		63	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		64	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		65	#else
		66	# define LOCK (void)0
		67	# define UNLOCK (void)0
		68	#endif
		69
		70	static struct CoroAPI coroapi;
		71	static AV main_mainstack; / used to differentiate between $main and others */
		72	static HV *coro_state_stash;
		73	static SV *ucoro_state_sv;
		74	static U32 ucoro_state_hash;
		75	static SV coro_mortal; / will be freed after next transfer */
38		76
39	/* this is actually not only the c stack but also c registers etc... */	77	/* this is actually not only the c stack but also c registers etc... */
40	typedef struct {	78	typedef struct {
41	int refcnt; /* pointer reference counter */	79	int refcnt; /* pointer reference counter */
42	int usecnt; /* shared by how many coroutines */	80	int usecnt; /* shared by how many coroutines */
46		84
47	void *sptr;	85	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	86	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;	87	} coro_stack;
50		88
51	static coro_stack main_stack = { 1, 0, 0 };
52
53	struct coro {	89	struct coro {
		90	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		91	JMPENV start_env;
		92
54	/* the optional C context */	93	/* the optional C context */
55	coro_stack *stack;	94	coro_stack *stack;
56	void *cursp;	95	void *cursp;
57	int gencnt;	96	int gencnt;
58		97
…		…
61	SV *defsv;	100	SV *defsv;
62	SV *errsv;	101	SV *errsv;
63		102
64	/* saved global state not related to stacks */	103	/* saved global state not related to stacks */
65	U8 dowarn;	104	U8 dowarn;
		105	I32 in_eval;
66		106
67	/* the stacks and related info (callchain etc..) */	107	/* the stacks and related info (callchain etc..) */
68	PERL_SI *curstackinfo;	108	PERL_SI *curstackinfo;
69	AV *curstack;	109	AV *curstack;
70	AV *mainstack;	110	AV *mainstack;
71	SV **stack_sp;	111	SV **stack_sp;
72	OP *op;	112	OP *op;
73	SV **curpad;	113	SV **curpad;
		114	AV *comppad;
		115	CV *compcv;
74	SV **stack_base;	116	SV **stack_base;
75	SV **stack_max;	117	SV **stack_max;
76	SV **tmps_stack;	118	SV **tmps_stack;
77	I32 tmps_floor;	119	I32 tmps_floor;
78	I32 tmps_ix;	120	I32 tmps_ix;
…		…
87	I32 savestack_ix;	129	I32 savestack_ix;
88	I32 savestack_max;	130	I32 savestack_max;
89	OP **retstack;	131	OP **retstack;
90	I32 retstack_ix;	132	I32 retstack_ix;
91	I32 retstack_max;	133	I32 retstack_max;
		134	PMOP *curpm;
92	COP *curcop;	135	COP *curcop;
93	JMPENV start_env;
94	JMPENV *top_env;	136	JMPENV *top_env;
95		137
96	/* data associated with this coroutine (initial args) */	138	/* data associated with this coroutine (initial args) */
97	AV *args;	139	AV *args;
98	};	140	};
99		141
100	typedef struct coro *Coro__State;	142	typedef struct coro *Coro__State;
101	typedef struct coro *Coro__State_or_hashref;	143	typedef struct coro *Coro__State_or_hashref;
102		144
103	static AV main_mainstack; / used to differentiate between $main and others */
104	static HV *coro_state_stash;
105	static SV *ucoro_state_sv;
106	static U32 ucoro_state_hash;
107	static HV *padlist_cache;
108
109	/* mostly copied from op.c:cv_clone2 */	145	/* mostly copied from op.c:cv_clone2 */
110	STATIC AV *	146	STATIC AV *
111	clone_padlist (AV *protopadlist)	147	clone_padlist (pTHX_ AV *protopadlist)
112	{	148	{
113	AV *av;	149	AV *av;
114	I32 ix;	150	I32 ix;
115	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	151	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
116	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	152	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
135	av_store (newpadlist, 1, (SV *) newpad);	171	av_store (newpadlist, 1, (SV *) newpad);
136		172
137	av = newAV (); /* will be @_ */	173	av = newAV (); /* will be @_ */
138	av_extend (av, 0);	174	av_extend (av, 0);
139	av_store (newpad, 0, (SV *) av);	175	av_store (newpad, 0, (SV *) av);
140	AvFLAGS (av) = AVf_REIFY;	176	AvREIFY_on (av);
141		177
142	for (ix = fpad; ix > 0; ix--)	178	for (ix = fpad; ix > 0; ix--)
143	{	179	{
144	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	180	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		181
145	if (namesv && namesv != &PL_sv_undef)	182	if (namesv && namesv != &PL_sv_undef)
146	{	183	{
147	char name = SvPVX (namesv); / XXX */	184	char name = SvPVX (namesv); / XXX */
		185
148	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	186	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
149	{ /* lexical from outside? */	187	{ /* lexical from outside? */
150	npad[ix] = SvREFCNT_inc (ppad[ix]);	188	npad[ix] = SvREFCNT_inc (ppad[ix]);
151	}	189	}
152	else	190	else
…		…
158	sv = (SV *) newAV ();	196	sv = (SV *) newAV ();
159	else if (*name == '%')	197	else if (*name == '%')
160	sv = (SV *) newHV ();	198	sv = (SV *) newHV ();
161	else	199	else
162	sv = NEWSV (0, 0);	200	sv = NEWSV (0, 0);
		201
		202	#ifdef SvPADBUSY
163	if (!SvPADBUSY (sv))	203	if (!SvPADBUSY (sv))
		204	#endif
164	SvPADMY_on (sv);	205	SvPADMY_on (sv);
		206
165	npad[ix] = sv;	207	npad[ix] = sv;
166	}	208	}
167	}	209	}
168	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	210	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
169	{	211	{
…		…
198	#endif	240	#endif
199		241
200	return newpadlist;	242	return newpadlist;
201	}	243	}
202		244
203	#ifdef MAY_FLUSH	245	STATIC void
204	STATIC AV *
205	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
206	{	247	{
207	/* may be during global destruction */	248	/* may be during global destruction */
208	if (SvREFCNT(padlist))	249	if (SvREFCNT (padlist))
209	{	250	{
210	I32 i = AvFILLp(padlist);	251	I32 i = AvFILLp (padlist);
211	while (i >= 0)	252	while (i >= 0)
212	{	253	{
213	SV **svp = av_fetch(padlist, i--, FALSE);	254	SV **svp = av_fetch (padlist, i--, FALSE);
214	SV sv = svp ? svp : Nullsv;
215	if (sv)	255	if (svp)
		256	{
		257	SV *sv;
		258	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
216	SvREFCNT_dec(sv);	259	SvREFCNT_dec (sv);
		260
		261	SvREFCNT_dec (*svp);
		262	}
217	}	263	}
218		264
219	SvREFCNT_dec((SV*)padlist);	265	SvREFCNT_dec ((SV*)padlist);
220	}	266	}
221	}	267	}
222	#endif	268
		269	STATIC int
		270	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		271	{
		272	AV *padlist;
		273	AV av = (AV )mg->mg_obj;
		274
		275	/* casting is fun. */
		276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		277	free_padlist (aTHX_ padlist);
		278
		279	SvREFCNT_dec (av);
		280	}
		281
		282	#define PERL_MAGIC_coro PERL_MAGIC_ext
		283
		284	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
223		285
224	/* the next two functions merely cache the padlists */	286	/* the next two functions merely cache the padlists */
225	STATIC void	287	STATIC void
226	get_padlist (CV *cv)	288	get_padlist (pTHX_ CV *cv)
227	{	289	{
228	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
229		291
230	if (he && AvFILLp ((AV )he) >= 0)	292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
231	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
232	else	294	else
233	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
234	}	296	}
235		297
236	STATIC void	298	STATIC void
237	put_padlist (CV *cv)	299	put_padlist (pTHX_ CV *cv)
238	{	300	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
240		302
241	if (SvTYPE (*he) != SVt_PVAV)	303	if (!mg)
242	{	304	{
243	SvREFCNT_dec (*he);	305	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		306	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		307	mg->mg_virtual = &vtbl_coro;
244	he = (SV )newAV ();	308	mg->mg_obj = (SV *)newAV ();
245	}	309	}
246		310
247	av_push ((AV )he, (SV *)CvPADLIST (cv));	311	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
248	}	312	}
249
250	#ifdef MAY_FLUSH
251	STATIC void
252	flush_padlist_cache ()
253	{
254	HV *hv = padlist_cache;
255	padlist_cache = newHV ();
256
257	if (hv_iterinit (hv))
258	{
259	HE *he;
260	AV *padlist;
261
262	while (!!(he = hv_iternext (hv)))
263	{
264	AV av = (AV )HeVAL(he);
265
266	/* casting is fun. */
267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
268	free_padlist (padlist);
269	}
270	}
271
272	SvREFCNT_dec (hv);
273	}
274	#endif
275		313
276	#define SB do {	314	#define SB do {
277	#define SE } while (0)	315	#define SE } while (0)
278		316
279	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	317	#define LOAD(state) load_state(aTHX_ (state));
280	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	318	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281		319
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	320	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
283		321
284	static void	322	static void
285	load_state(pTHX_ Coro__State c)	323	load_state(pTHX_ Coro__State c)
286	{	324	{
287	PL_dowarn = c->dowarn;	325	PL_dowarn = c->dowarn;
		326	PL_in_eval = c->in_eval;
288		327
289	PL_curstackinfo = c->curstackinfo;	328	PL_curstackinfo = c->curstackinfo;
290	PL_curstack = c->curstack;	329	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;	330	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;	331	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;	332	PL_op = c->op;
294	PL_curpad = c->curpad;	333	PL_curpad = c->curpad;
		334	PL_comppad = c->comppad;
		335	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;	336	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;	337	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;	338	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;	339	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;	340	PL_tmps_ix = c->tmps_ix;
…		…
305	PL_scopestack_ix = c->scopestack_ix;	346	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;	347	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;	348	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;	349	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;	350	PL_savestack_max = c->savestack_max;
		351	#if PERL_VERSION < 9
310	PL_retstack = c->retstack;	352	PL_retstack = c->retstack;
311	PL_retstack_ix = c->retstack_ix;	353	PL_retstack_ix = c->retstack_ix;
312	PL_retstack_max = c->retstack_max;	354	PL_retstack_max = c->retstack_max;
		355	#endif
		356	PL_curpm = c->curpm;
313	PL_curcop = c->curcop;	357	PL_curcop = c->curcop;
314	PL_start_env = c->start_env;
315	PL_top_env = c->top_env;	358	PL_top_env = c->top_env;
316		359
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
327	{	370	{
328	AV padlist = (AV )POPs;	371	AV padlist = (AV )POPs;
329		372
330	if (padlist)	373	if (padlist)
331	{	374	{
332	put_padlist (cv); /* mark this padlist as available */	375	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvPADLIST(cv) = padlist;	376	CvPADLIST(cv) = padlist;
334	#ifdef USE_THREADS
335	/CvOWNER(cv) = (struct perl_thread )POPs;*/
336	#endif
337	}	377	}
338		378
339	++CvDEPTH(cv);	379	++CvDEPTH(cv);
340	}	380	}
341		381
…		…
359		399
360	PUSHs (Nullsv);	400	PUSHs (Nullsv);
361	/* this loop was inspired by pp_caller */	401	/* this loop was inspired by pp_caller */
362	for (;;)	402	for (;;)
363	{	403	{
364	do	404	while (cxix >= 0)
365	{	405	{
366	PERL_CONTEXT *cx = &ccstk[cxix--];	406	PERL_CONTEXT *cx = &ccstk[cxix--];
367		407
368	if (CxTYPE(cx) == CXt_SUB)	408	if (CxTYPE(cx) == CXt_SUB)
369	{	409	{
370	CV *cv = cx->blk_sub.cv;	410	CV *cv = cx->blk_sub.cv;
371	if (CvDEPTH(cv))	411	if (CvDEPTH(cv))
372	{	412	{
373	#ifdef USE_THREADS
374	/XPUSHs ((SV )CvOWNER(cv));*/
375	/CvOWNER(cv) = 0;/
376	/error must unlock this cv etc.. etc.../
377	#endif
378	EXTEND (SP, CvDEPTH(cv)*2);	413	EXTEND (SP, CvDEPTH(cv)*2);
379		414
380	while (--CvDEPTH(cv))	415	while (--CvDEPTH(cv))
381	{	416	{
382	/* this tells the restore code to increment CvDEPTH */	417	/* this tells the restore code to increment CvDEPTH */
…		…
385	}	420	}
386		421
387	PUSHs ((SV *)CvPADLIST(cv));	422	PUSHs ((SV *)CvPADLIST(cv));
388	PUSHs ((SV *)cv);	423	PUSHs ((SV *)cv);
389		424
390	get_padlist (cv); /* this is a monster */	425	get_padlist (aTHX_ cv); /* this is a monster */
391	}	426	}
392	}	427	}
		428	#ifdef CXt_FORMAT
393	else if (CxTYPE(cx) == CXt_FORMAT)	429	else if (CxTYPE(cx) == CXt_FORMAT)
394	{	430	{
395	/* I never used formats, so how should I know how these are implemented? */	431	/* I never used formats, so how should I know how these are implemented? */
396	/* my bold guess is as a simple, plain sub... */	432	/* my bold guess is as a simple, plain sub... */
397	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	433	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
398	}	434	}
		435	#endif
399	}	436	}
400	while (cxix >= 0);
401		437
402	if (top_si->si_type == PERLSI_MAIN)	438	if (top_si->si_type == PERLSI_MAIN)
403	break;	439	break;
404		440
405	top_si = top_si->si_prev;	441	top_si = top_si->si_prev;
…		…
412		448
413	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	449	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
414	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	450	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
415	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	451	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
416		452
417	/* I have not the slightest idea of why av_reify is necessary */
418	/* but if it's missing the defav contents magically get replaced sometimes */
419	if (c->defav)
420	av_reify (c->defav);
421
422	c->dowarn = PL_dowarn;	453	c->dowarn = PL_dowarn;
		454	c->in_eval = PL_in_eval;
423		455
424	c->curstackinfo = PL_curstackinfo;	456	c->curstackinfo = PL_curstackinfo;
425	c->curstack = PL_curstack;	457	c->curstack = PL_curstack;
426	c->mainstack = PL_mainstack;	458	c->mainstack = PL_mainstack;
427	c->stack_sp = PL_stack_sp;	459	c->stack_sp = PL_stack_sp;
428	c->op = PL_op;	460	c->op = PL_op;
429	c->curpad = PL_curpad;	461	c->curpad = PL_curpad;
		462	c->comppad = PL_comppad;
		463	c->compcv = PL_compcv;
430	c->stack_base = PL_stack_base;	464	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;	465	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;	466	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;	467	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;	468	c->tmps_ix = PL_tmps_ix;
…		…
440	c->scopestack_ix = PL_scopestack_ix;	474	c->scopestack_ix = PL_scopestack_ix;
441	c->scopestack_max = PL_scopestack_max;	475	c->scopestack_max = PL_scopestack_max;
442	c->savestack = PL_savestack;	476	c->savestack = PL_savestack;
443	c->savestack_ix = PL_savestack_ix;	477	c->savestack_ix = PL_savestack_ix;
444	c->savestack_max = PL_savestack_max;	478	c->savestack_max = PL_savestack_max;
		479	#if PERL_VERSION < 9
445	c->retstack = PL_retstack;	480	c->retstack = PL_retstack;
446	c->retstack_ix = PL_retstack_ix;	481	c->retstack_ix = PL_retstack_ix;
447	c->retstack_max = PL_retstack_max;	482	c->retstack_max = PL_retstack_max;
		483	#endif
		484	c->curpm = PL_curpm;
448	c->curcop = PL_curcop;	485	c->curcop = PL_curcop;
449	c->start_env = PL_start_env;
450	c->top_env = PL_top_env;	486	c->top_env = PL_top_env;
451	}	487	}
452		488
453	/*	489	/*
454	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
455	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
456	* on the assumption that coroutines do not usually need	492	* on the (sometimes correct) assumption that coroutines do
457	* a lot of stackspace.	493	* not usually need a lot of stackspace.
458	*/	494	*/
459	STATIC void	495	STATIC void
460	coro_init_stacks (pTHX)	496	coro_init_stacks (pTHX)
461	{	497	{
		498	LOCK;
		499
462	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	500	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
463	PL_curstackinfo->si_type = PERLSI_MAIN;	501	PL_curstackinfo->si_type = PERLSI_MAIN;
464	PL_curstack = PL_curstackinfo->si_stack;	502	PL_curstack = PL_curstackinfo->si_stack;
465	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	503	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
466		504
…		…
475		513
476	New(54,PL_markstack,16,I32);	514	New(54,PL_markstack,16,I32);
477	PL_markstack_ptr = PL_markstack;	515	PL_markstack_ptr = PL_markstack;
478	PL_markstack_max = PL_markstack + 16;	516	PL_markstack_max = PL_markstack + 16;
479		517
		518	#ifdef SET_MARK_OFFSET
480	SET_MARK_OFFSET;	519	SET_MARK_OFFSET;
		520	#endif
481		521
482	New(54,PL_scopestack,16,I32);	522	New(54,PL_scopestack,16,I32);
483	PL_scopestack_ix = 0;	523	PL_scopestack_ix = 0;
484	PL_scopestack_max = 16;	524	PL_scopestack_max = 16;
485		525
486	New(54,PL_savestack,96,ANY);	526	New(54,PL_savestack,96,ANY);
487	PL_savestack_ix = 0;	527	PL_savestack_ix = 0;
488	PL_savestack_max = 96;	528	PL_savestack_max = 96;
489		529
		530	#if PERL_VERSION < 9
490	New(54,PL_retstack,8,OP*);	531	New(54,PL_retstack,8,OP*);
491	PL_retstack_ix = 0;	532	PL_retstack_ix = 0;
492	PL_retstack_max = 8;	533	PL_retstack_max = 8;
		534	#endif
		535
		536	UNLOCK;
493	}	537	}
494		538
495	/*	539	/*
496	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
497	* still there is a memleak of 128 bytes...
498	*/	541	*/
499	STATIC void	542	STATIC void
500	destroy_stacks(pTHX)	543	destroy_stacks(pTHX)
501	{	544	{
		545	if (!IN_DESTRUCT)
		546	{
502	/* is this ugly, I ask? */	547	/* is this ugly, I ask? */
503	while (PL_scopestack_ix)	548	LEAVE_SCOPE (0);
504	LEAVE;
505		549
506	/* sure it is, but more important: is it correct?? :/ */	550	/* sure it is, but more important: is it correct?? :/ */
507	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
508	FREETMPS;	551	FREETMPS;
		552
		553	/POPSTACK_TO (PL_mainstack);//D//use/
		554	}
509		555
510	while (PL_curstackinfo->si_next)	556	while (PL_curstackinfo->si_next)
511	PL_curstackinfo = PL_curstackinfo->si_next;	557	PL_curstackinfo = PL_curstackinfo->si_next;
512		558
513	while (PL_curstackinfo)	559	while (PL_curstackinfo)
514	{	560	{
515	PERL_SI *p = PL_curstackinfo->si_prev;	561	PERL_SI *p = PL_curstackinfo->si_prev;
516		562
517	{	563	{ /D//remove/
518	dSP;	564	dSP;
519	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	565	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
520	PUTBACK; /* possibly superfluous */	566	PUTBACK; /* possibly superfluous */
521	}	567	}
522		568
523	dounwind(-1);	569	if (!IN_DESTRUCT)
524		570	{
		571	dounwind (-1);/D//remove/
525	SvREFCNT_dec(PL_curstackinfo->si_stack);	572	SvREFCNT_dec (PL_curstackinfo->si_stack);
		573	}
		574
526	Safefree(PL_curstackinfo->si_cxstack);	575	Safefree (PL_curstackinfo->si_cxstack);
527	Safefree(PL_curstackinfo);	576	Safefree (PL_curstackinfo);
528	PL_curstackinfo = p;	577	PL_curstackinfo = p;
529	}	578	}
530		579
531	Safefree(PL_tmps_stack);	580	Safefree (PL_tmps_stack);
532	Safefree(PL_markstack);	581	Safefree (PL_markstack);
533	Safefree(PL_scopestack);	582	Safefree (PL_scopestack);
534	Safefree(PL_savestack);	583	Safefree (PL_savestack);
		584	#if PERL_VERSION < 9
535	Safefree(PL_retstack);	585	Safefree (PL_retstack);
		586	#endif
536	}	587	}
537		588
538	static void	589	static void
539	allocate_stack (Coro__State ctx, int alloc)	590	allocate_stack (Coro__State ctx, int alloc)
540	{	591	{
…		…
543	New (0, stack, 1, coro_stack);	594	New (0, stack, 1, coro_stack);
544		595
545	stack->refcnt = 1;	596	stack->refcnt = 1;
546	stack->usecnt = 1;	597	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;	598	stack->gencnt = ctx->gencnt = 0;
		599
548	if (alloc)	600	if (alloc)
549	{	601	{
550	#ifdef HAVE_MMAP	602	#if HAVE_MMAP
551	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */	603	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
552	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	604	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
553	if (stack->sptr == (void *)-1)	605	if (stack->sptr == (void *)-1)
554	#endif	606	#endif
555	{	607	{
556	/FIXME//D//* reasonable stack size! */	608	/FIXME//D//* reasonable stack size! */
557	stack->ssize = -4096 * sizeof (long);	609	stack->ssize = - (STACKSIZE * sizeof (long));
558	New (0, stack->sptr, 4096, long);	610	New (0, stack->sptr, STACKSIZE, long);
559	}	611	}
560	}	612	}
561	else	613	else
562	stack->sptr = 0;	614	stack->sptr = 0;
563		615
…		…
577	{	629	{
578	#ifdef HAVE_MMAP	630	#ifdef HAVE_MMAP
579	if (stack->ssize > 0 && stack->sptr)	631	if (stack->ssize > 0 && stack->sptr)
580	munmap (stack->sptr, stack->ssize);	632	munmap (stack->sptr, stack->ssize);
581	else	633	else
582	#else	634	#endif
583	Safefree (stack->sptr);	635	Safefree (stack->sptr);
584	#endif	636
585	Safefree (stack);	637	Safefree (stack);
586	}	638	}
587	else if (ctx->gencnt == stack->gencnt)	639	else if (ctx->gencnt == stack->gencnt)
588	--stack->usecnt;	640	--stack->usecnt;
589	}	641	}
…		…
593	setup_coro (void *arg)	645	setup_coro (void *arg)
594	{	646	{
595	/*	647	/*
596	* emulate part of the perl startup here.	648	* emulate part of the perl startup here.
597	*/	649	*/
		650	dTHX;
598	dSP;	651	dSP;
599	Coro__State ctx = (Coro__State)arg;	652	Coro__State ctx = (Coro__State)arg;
600	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	653	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
601		654
602	coro_init_stacks (aTHX);	655	coro_init_stacks (aTHX);
603	JMPENV_BOOTSTRAP;	656	/PL_curcop = 0;/
		657	/PL_in_eval = PL_in_eval;/ /* inherit */
		658	SvREFCNT_dec (GvAV (PL_defgv));
		659	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		660
604	SPAGAIN;	661	SPAGAIN;
605
606	/PL_curcop = 0;/
607	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = ctx->args;
609		662
610	if (ctx->stack)	663	if (ctx->stack)
611	{	664	{
612	ctx->cursp = 0;	665	ctx->cursp = 0;
613		666
614	PUSHMARK(SP);	667	PUSHMARK(SP);
615	PUTBACK;	668	PUTBACK;
616	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	669	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		670
		671	if (SvTRUE (ERRSV))
		672	croak (NULL);
		673	else
617	croak ("FATAL: CCTXT coroutine returned!");	674	croak ("FATAL: CCTXT coroutine returned!");
618	}	675	}
619	else	676	else
620	{	677	{
621	UNOP myop;	678	UNOP myop;
622		679
…		…
634	* that doesn't matter, though, since it is only	691	* that doesn't matter, though, since it is only
635	* pp_nextstate and we never return...	692	* pp_nextstate and we never return...
636	* ah yes, and I don't care anyways ;)	693	* ah yes, and I don't care anyways ;)
637	*/	694	*/
638	PUTBACK;	695	PUTBACK;
639	PL_op = pp_entersub();	696	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
640	SPAGAIN;	697	SPAGAIN;
641		698
642	ENTER; /* necessary e.g. for dounwind */	699	ENTER; /* necessary e.g. for dounwind */
643	}	700	}
644	}	701	}
…		…
647	continue_coro (void *arg)	704	continue_coro (void *arg)
648	{	705	{
649	/*	706	/*
650	* this is a _very_ stripped down perl interpreter ;)	707	* this is a _very_ stripped down perl interpreter ;)
651	*/	708	*/
		709	dTHX;
652	Coro__State ctx = (Coro__State)arg;	710	Coro__State ctx = (Coro__State)arg;
		711	JMPENV coro_start_env;
		712
		713	PL_top_env = &ctx->start_env;
653		714
654	ctx->cursp = 0;	715	ctx->cursp = 0;
655	PL_op = PL_op->op_next;	716	PL_op = PL_op->op_next;
656	CALLRUNOPS(aTHX);	717	CALLRUNOPS(aTHX);
657	/NORETURN/	718
658	abort ();	719	abort ();
659	}	720	}
660		721
661	STATIC void	722	STATIC void
662	transfer(pTHX_ struct coro prev, struct coro next, int flags)	723	transfer (pTHX_ struct coro prev, struct coro next, int flags)
663	{	724	{
664	dSP;
665	dSTACKLEVEL;	725	dSTACKLEVEL;
666		726
667	if (prev != next)	727	if (prev != next)
668	{	728	{
669	if (next->mainstack)	729	if (next->mainstack)
670	{	730	{
		731	LOCK;
671	SAVE (prev, flags);	732	SAVE (prev, flags);
672	LOAD (next);	733	LOAD (next);
		734	UNLOCK;
673		735
674	/* mark this state as in-use */	736	/* mark this state as in-use */
675	next->mainstack = 0;	737	next->mainstack = 0;
676	next->tmps_ix = -2;	738	next->tmps_ix = -2;
677		739
…		…
696	continue_coro, (void *)next,	758	continue_coro, (void *)next,
697	next->stack->sptr, labs (next->stack->ssize));	759	next->stack->sptr, labs (next->stack->ssize));
698	}	760	}
699		761
700	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	762	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		763	prev->cursp = stacklevel;
		764	/* don't add any code here */
701	}	765	}
702		766	else
		767	next->cursp = stacklevel;
703	}	768	}
704	else if (next->tmps_ix == -2)	769	else if (next->tmps_ix == -2)
705	croak ("tried to transfer to running coroutine");	770	croak ("tried to transfer to running coroutine");
706	else	771	else
707	{	772	{
		773	LOCK;
708	SAVE (prev, -1); /* first get rid of the old state */	774	SAVE (prev, -1); /* first get rid of the old state */
		775	UNLOCK;
709		776
710	if (flags & TRANSFER_SAVE_CCTXT)	777	if (flags & TRANSFER_SAVE_CCTXT)
711	{	778	{
712	if (!prev->stack)	779	if (!prev->stack)
713	allocate_stack (prev, 0);	780	allocate_stack (prev, 0);
714		781
715	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	782	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
716	{	783	{
		784	PL_top_env = &next->start_env;
		785
717	setup_coro (next);	786	setup_coro (next);
		787	next->cursp = stacklevel;
718		788
719	prev->stack->refcnt++;	789	prev->stack->refcnt++;
720	prev->stack->usecnt++;	790	prev->stack->usecnt++;
721	next->stack = prev->stack;	791	next->stack = prev->stack;
722	next->gencnt = prev->gencnt;	792	next->gencnt = prev->gencnt;
723	}	793	}
724	else	794	else
725	{	795	{
		796	assert (!next->stack);
726	allocate_stack (next, 1);	797	allocate_stack (next, 1);
727	coro_create (&(next->stack->cctx),	798	coro_create (&(next->stack->cctx),
728	setup_coro, (void *)next,	799	setup_coro, (void *)next,
729	next->stack->sptr, labs (next->stack->ssize));	800	next->stack->sptr, labs (next->stack->ssize));
730	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	801	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		802	prev->cursp = stacklevel;
		803	/* don't add any code here */
731	}	804	}
732	}	805	}
733	else	806	else
		807	{
734	setup_coro (next);	808	setup_coro (next);
		809	next->cursp = stacklevel;
		810	}
735	}	811	}
736	}	812	}
737		813
738	next->cursp = stacklevel;	814	LOCK;
		815	if (coro_mortal)
		816	{
		817	SvREFCNT_dec (coro_mortal);
		818	coro_mortal = 0;
		819	}
		820	UNLOCK;
		821	}
		822
		823	#define SV_CORO(sv,func) \
		824	do { \
		825	if (SvROK (sv)) \
		826	sv = SvRV (sv); \
		827	\
		828	if (SvTYPE (sv) == SVt_PVHV) \
		829	{ \
		830	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		831	\
		832	if (!he) \
		833	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		834	\
		835	(sv) = SvRV (HeVAL(he)); \
		836	} \
		837	\
		838	/* must also be changed inside Coro::Cont::yield */ \
		839	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		840	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		841	\
		842	} while(0)
		843
		844	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		845
		846	static void
		847	api_transfer(pTHX_ SV prev, SV next, int flags)
		848	{
		849	SV_CORO (prev, "Coro::transfer");
		850	SV_CORO (next, "Coro::transfer");
		851
		852	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		853	}
		854
		855	/ Coro ******************************************************************/
		856
		857	#define PRIO_MAX 3
		858	#define PRIO_HIGH 1
		859	#define PRIO_NORMAL 0
		860	#define PRIO_LOW -1
		861	#define PRIO_IDLE -3
		862	#define PRIO_MIN -4
		863
		864	/* for Coro.pm */
		865	static GV coro_current, coro_idle;
		866	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		867	static int coro_nready;
		868
		869	static void
		870	coro_enq (pTHX_ SV *sv)
		871	{
		872	if (SvTYPE (sv) != SVt_PVHV)
		873	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		874
		875	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		876	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		877
		878	prio = prio > PRIO_MAX ? PRIO_MAX
		879	: prio < PRIO_MIN ? PRIO_MIN
		880	: prio;
		881
		882	av_push (coro_ready [prio - PRIO_MIN], sv);
		883	coro_nready++;
		884	}
		885
		886	static SV *
		887	coro_deq (pTHX_ int min_prio)
		888	{
		889	int prio = PRIO_MAX - PRIO_MIN;
		890
		891	min_prio -= PRIO_MIN;
		892	if (min_prio < 0)
		893	min_prio = 0;
		894
		895	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		896	if (av_len (coro_ready[prio]) >= 0)
		897	{
		898	coro_nready--;
		899	return av_shift (coro_ready[prio]);
		900	}
		901
		902	return 0;
		903	}
		904
		905	static void
		906	api_ready (SV *coro)
		907	{
		908	dTHX;
		909
		910	if (SvROK (coro))
		911	coro = SvRV (coro);
		912
		913	LOCK;
		914	coro_enq (aTHX_ SvREFCNT_inc (coro));
		915	UNLOCK;
		916	}
		917
		918	static void
		919	api_schedule (void)
		920	{
		921	dTHX;
		922
		923	SV prev, next;
		924
		925	LOCK;
		926
		927	prev = SvRV (GvSV (coro_current));
		928	next = coro_deq (aTHX_ PRIO_MIN);
		929
		930	if (!next)
		931	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		932
		933	/* free this only after the transfer */
		934	coro_mortal = prev;
		935	SV_CORO (prev, "Coro::schedule");
		936
		937	SvRV (GvSV (coro_current)) = next;
		938
		939	SV_CORO (next, "Coro::schedule");
		940
		941	UNLOCK;
		942
		943	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		944	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		945	}
		946
		947	static void
		948	api_cede (void)
		949	{
		950	dTHX;
		951
		952	LOCK;
		953	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		954	UNLOCK;
		955
		956	api_schedule ();
739	}	957	}
740		958
741	MODULE = Coro::State PACKAGE = Coro::State	959	MODULE = Coro::State PACKAGE = Coro::State
742		960
743	PROTOTYPES: ENABLE	961	PROTOTYPES: ENABLE
744		962
745	BOOT:	963	BOOT:
746	{ /* {} necessary for stoopid perl-5.6.x */	964	{ /* {} necessary for stoopid perl-5.6.x */
		965	#ifdef USE_ITHREADS
		966	MUTEX_INIT (&coro_mutex);
		967	#endif
		968
747	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	969	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
748	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	970	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
749	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	971	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
750		972
751	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	973	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
752	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	974	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
753	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	975	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
754	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	976	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
755		977
756	if (!padlist_cache)
757	padlist_cache = newHV ();
758
759	main_mainstack = PL_mainstack;	978	main_mainstack = PL_mainstack;
		979
		980	coroapi.ver = CORO_API_VERSION;
		981	coroapi.transfer = api_transfer;
760	}	982	}
761		983
762	Coro::State	984	Coro::State
763	_newprocess(args)	985	_newprocess(args)
764	SV * args	986	SV * args
…		…
767	Coro__State coro;	989	Coro__State coro;
768		990
769	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	991	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
770	croak ("Coro::State::_newprocess expects an arrayref");	992	croak ("Coro::State::_newprocess expects an arrayref");
771		993
772	New (0, coro, 1, struct coro);	994	Newz (0, coro, 1, struct coro);
773		995
774	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	996	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
775	coro->mainstack = 0; /* actual work is done inside transfer */	997	/coro->mainstack = 0; //actual work is done inside transfer /
776	coro->stack = 0;	998	/coro->stack = 0;/
		999
		1000	/* same as JMPENV_BOOTSTRAP */
		1001	/* we might be able to recycle start_env, but safe is safe */
		1002	/Zero(&coro->start_env, 1, JMPENV);/
		1003	coro->start_env.je_ret = -1;
		1004	coro->start_env.je_mustcatch = TRUE;
777		1005
778	RETVAL = coro;	1006	RETVAL = coro;
779	OUTPUT:	1007	OUTPUT:
780	RETVAL	1008	RETVAL
781		1009
782	void	1010	void
783	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	1011	transfer(prev, next, flags)
784	Coro::State_or_hashref prev	1012	SV *prev
785	Coro::State_or_hashref next	1013	SV *next
786	int flags	1014	int flags
787	PROTOTYPE: @	1015	PROTOTYPE: @
788	CODE:	1016	CODE:
		1017	PUTBACK;
		1018	SV_CORO (next, "Coro::transfer");
		1019	SV_CORO (prev, "Coro::transfer");
789	transfer (aTHX_ prev, next, flags);	1020	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		1021	SPAGAIN;
790		1022
791	void	1023	void
792	DESTROY(coro)	1024	DESTROY(coro)
793	Coro::State coro	1025	Coro::State coro
794	CODE:	1026	CODE:
795		1027
796	if (coro->mainstack && coro->mainstack != main_mainstack)	1028	if (coro->mainstack && coro->mainstack != main_mainstack)
797	{	1029	{
798	struct coro temp;	1030	struct coro temp;
799		1031
		1032	PUTBACK;
800	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1033	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
801	LOAD(aTHX_ coro);	1034	LOAD (aTHX_ coro);
		1035	SPAGAIN;
802		1036
803	destroy_stacks (aTHX);	1037	destroy_stacks (aTHX);
804		1038
805	LOAD((&temp)); /* this will get rid of defsv etc.. */	1039	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1040	SPAGAIN;
806		1041
807	coro->mainstack = 0;	1042	coro->mainstack = 0;
808	}	1043	}
809		1044
810	deallocate_stack (coro);	1045	deallocate_stack (coro);
811		1046	SvREFCNT_dec (coro->args);
812	Safefree (coro);	1047	Safefree (coro);
813		1048
814	void	1049	void
815	flush()	1050	_exit(code)
		1051	int code
		1052	PROTOTYPE: $
816	CODE:	1053	CODE:
817	#ifdef MAY_FLUSH	1054	_exit (code);
818	flush_padlist_cache ();
819	#endif
820		1055
821	MODULE = Coro::State PACKAGE = Coro::Cont	1056	MODULE = Coro::State PACKAGE = Coro::Cont
822		1057
823	# this is slightly dirty	1058	# this is slightly dirty (should expose a c-level api)
824		1059
825	void	1060	void
826	yield(...)	1061	yield(...)
827	PROTOTYPE: @	1062	PROTOTYPE: @
828	CODE:	1063	CODE:
829	static SV *returnstk;	1064	SV *yieldstack;
830	SV *sv;	1065	SV *sv;
831	AV *defav = GvAV (PL_defgv);	1066	AV *defav = GvAV (PL_defgv);
832	struct coro prev, next;	1067	struct coro prev, next;
833		1068
834	if (!returnstk)	1069	yieldstack = *hv_fetch (
835	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1070	(HV *)SvRV (GvSV (coro_current)),
		1071	"yieldstack", sizeof ("yieldstack") - 1,
		1072	0
		1073	);
836		1074
837	/* set up @_ -- ugly */	1075	/* set up @_ -- ugly */
838	av_clear (defav);	1076	av_clear (defav);
839	av_fill (defav, items - 1);	1077	av_fill (defav, items - 1);
840	while (items--)	1078	while (items--)
841	av_store (defav, items, SvREFCNT_inc (ST(items)));	1079	av_store (defav, items, SvREFCNT_inc (ST(items)));
842		1080
843	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
844	sv = av_pop ((AV *)SvRV (returnstk));	1081	sv = av_pop ((AV *)SvRV (yieldstack));
845	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1082	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
846	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1083	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
847	SvREFCNT_dec (sv);	1084	SvREFCNT_dec (sv);
848		1085
849	transfer(aTHX_ prev, next, 0);	1086	transfer (aTHX_ prev, next, 0);
850		1087
		1088	MODULE = Coro::State PACKAGE = Coro
		1089
		1090	# this is slightly dirty (should expose a c-level api)
		1091
		1092	BOOT:
		1093	{
		1094	int i;
		1095	HV *stash = gv_stashpv ("Coro", TRUE);
		1096
		1097	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1098	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1099	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1100	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1101	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1102	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1103
		1104	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1105	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1106
		1107	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1108	coro_ready[i] = newAV ();
		1109
		1110	{
		1111	SV *sv = perl_get_sv("Coro::API", 1);
		1112
		1113	coroapi.schedule = api_schedule;
		1114	coroapi.cede = api_cede;
		1115	coroapi.ready = api_ready;
		1116	coroapi.nready = &coro_nready;
		1117	coroapi.current = coro_current;
		1118
		1119	GCoroAPI = &coroapi;
		1120	sv_setiv(sv, (IV)&coroapi);
		1121	SvREADONLY_on(sv);
		1122	}
		1123	}
		1124
		1125	#if !PERL_MICRO
		1126
		1127	void
		1128	ready(self)
		1129	SV * self
		1130	PROTOTYPE: $
		1131	CODE:
		1132	api_ready (self);
		1133
		1134	#endif
		1135
		1136	int
		1137	nready(...)
		1138	PROTOTYPE:
		1139	CODE:
		1140	RETVAL = coro_nready;
		1141	OUTPUT:
		1142	RETVAL
		1143
		1144	void
		1145	schedule(...)
		1146	PROTOTYPE:
		1147	CODE:
		1148	api_schedule ();
		1149
		1150	void
		1151	cede(...)
		1152	PROTOTYPE:
		1153	CODE:
		1154	api_cede ();
		1155
		1156	# and these are hacks
		1157	SV *
		1158	_aio_get_state ()
		1159	CODE:
		1160	{
		1161	struct {
		1162	int errorno;
		1163	int laststype;
		1164	int laststatval;
		1165	Stat_t statcache;
		1166	} data;
		1167
		1168	data.errorno = errno;
		1169	data.laststype = PL_laststype;
		1170	data.laststatval = PL_laststatval;
		1171	data.statcache = PL_statcache;
		1172
		1173	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1174	}
		1175	OUTPUT:
		1176	RETVAL
		1177
		1178	void
		1179	_aio_set_state (char *data_)
		1180	PROTOTYPE: $
		1181	CODE:
		1182	{
		1183	struct {
		1184	int errorno;
		1185	int laststype;
		1186	int laststatval;
		1187	Stat_t statcache;
		1188	} data = (void )data_;
		1189
		1190	errno = data->errorno;
		1191	PL_laststype = data->laststype;
		1192	PL_laststatval = data->laststatval;
		1193	PL_statcache = data->statcache;
		1194	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs. Revision 1.73 by root, Sat Feb 4 06:01:13 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.73 by root, Sat Feb 4 06:01:13 2006 UTC