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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.30 by root, Sat Aug 25 22:19:05 2001 UTC vs.
Revision 1.70 by root, Mon Dec 26 19:26:52 2005 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
		32	#include <errno.h>
7	#include <signal.h>	33	#include <signal.h>
8		34
9	#ifdef HAVE_MMAP	35	#ifdef HAVE_MMAP
10	# include <unistd.h>	36	# include <unistd.h>
11	# include <sys/mman.h>	37	# include <sys/mman.h>
12	# ifndef MAP_ANON
13	# ifdef MAP_ANONYMOUS	38	# ifndef MAP_ANONYMOUS
14	# define MAP_ANON MAP_ANONYMOUS	39	# ifdef MAP_ANON
		40	# define MAP_ANONYMOUS MAP_ANON
15	# else	41	# else
16	# undef HAVE_MMAP	42	# undef HAVE_MMAP
17	# endif	43	# endif
18	# endif	44	# endif
19	#endif	45	#endif
20		46
21	#define MAY_FLUSH /* increases codesize and is rarely used */
22
23	#define SUB_INIT "Coro::State::initialize"	47	#define SUB_INIT "Coro::State::initialize"
24	#define UCORO_STATE "_coro_state"	48	#define UCORO_STATE "_coro_state"
25		49
26	/* The next macro should declare a variable stacklevel that contains and approximation	50	/* The next macro should declare a variable stacklevel that contains and approximation
27	* to the current C stack pointer. Its property is that it changes with each call	51	* to the current C stack pointer. Its property is that it changes with each call
28	* and should be unique. */	52	* and should be unique. */
29	#define dSTACKLEVEL void *stacklevel = &stacklevel	53	#define dSTACKLEVEL void *stacklevel = &stacklevel
30		54
		55	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		56
31	#define labs(l) ((l) >= 0 ? (l) : -(l))	57	#define labs(l) ((l) >= 0 ? (l) : -(l))
32		58
33	#include "CoroAPI.h"	59	#include "CoroAPI.h"
34		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
35	static struct CoroAPI coroapi;	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 */
36		76
37	/* 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... */
38	typedef struct {	78	typedef struct {
39	int refcnt; /* pointer reference counter */	79	int refcnt; /* pointer reference counter */
40	int usecnt; /* shared by how many coroutines */	80	int usecnt; /* shared by how many coroutines */
45	void *sptr;	85	void *sptr;
46	long ssize; /* positive == mmap, otherwise malloc */	86	long ssize; /* positive == mmap, otherwise malloc */
47	} coro_stack;	87	} coro_stack;
48		88
49	struct coro {	89	struct coro {
		90	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		91	JMPENV start_env;
		92
50	/* the optional C context */	93	/* the optional C context */
51	coro_stack *stack;	94	coro_stack *stack;
52	void *cursp;	95	void *cursp;
53	int gencnt;	96	int gencnt;
54		97
…		…
66	AV *curstack;	109	AV *curstack;
67	AV *mainstack;	110	AV *mainstack;
68	SV **stack_sp;	111	SV **stack_sp;
69	OP *op;	112	OP *op;
70	SV **curpad;	113	SV **curpad;
		114	AV *comppad;
		115	CV *compcv;
71	SV **stack_base;	116	SV **stack_base;
72	SV **stack_max;	117	SV **stack_max;
73	SV **tmps_stack;	118	SV **tmps_stack;
74	I32 tmps_floor;	119	I32 tmps_floor;
75	I32 tmps_ix;	120	I32 tmps_ix;
…		…
84	I32 savestack_ix;	129	I32 savestack_ix;
85	I32 savestack_max;	130	I32 savestack_max;
86	OP **retstack;	131	OP **retstack;
87	I32 retstack_ix;	132	I32 retstack_ix;
88	I32 retstack_max;	133	I32 retstack_max;
		134	PMOP *curpm;
89	COP *curcop;	135	COP *curcop;
90	JMPENV *top_env;	136	JMPENV *top_env;
91		137
92	/* data associated with this coroutine (initial args) */	138	/* data associated with this coroutine (initial args) */
93	AV *args;	139	AV *args;
94	};	140	};
95		141
96	typedef struct coro *Coro__State;	142	typedef struct coro *Coro__State;
97	typedef struct coro *Coro__State_or_hashref;	143	typedef struct coro *Coro__State_or_hashref;
98		144
99	static AV main_mainstack; / used to differentiate between $main and others */
100	static HV *coro_state_stash;
101	static SV *ucoro_state_sv;
102	static U32 ucoro_state_hash;
103	static HV *padlist_cache;
104
105	/* mostly copied from op.c:cv_clone2 */	145	/* mostly copied from op.c:cv_clone2 */
106	STATIC AV *	146	STATIC AV *
107	clone_padlist (AV *protopadlist)	147	clone_padlist (pTHX_ AV *protopadlist)
108	{	148	{
109	AV *av;	149	AV *av;
110	I32 ix;	150	I32 ix;
111	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	151	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
112	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	152	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
136	AvFLAGS (av) = AVf_REIFY;	176	AvFLAGS (av) = AVf_REIFY;
137		177
138	for (ix = fpad; ix > 0; ix--)	178	for (ix = fpad; ix > 0; ix--)
139	{	179	{
140	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	180	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		181
141	if (namesv && namesv != &PL_sv_undef)	182	if (namesv && namesv != &PL_sv_undef)
142	{	183	{
143	char name = SvPVX (namesv); / XXX */	184	char name = SvPVX (namesv); / XXX */
		185
144	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	186	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
145	{ /* lexical from outside? */	187	{ /* lexical from outside? */
146	npad[ix] = SvREFCNT_inc (ppad[ix]);	188	npad[ix] = SvREFCNT_inc (ppad[ix]);
147	}	189	}
148	else	190	else
…		…
154	sv = (SV *) newAV ();	196	sv = (SV *) newAV ();
155	else if (*name == '%')	197	else if (*name == '%')
156	sv = (SV *) newHV ();	198	sv = (SV *) newHV ();
157	else	199	else
158	sv = NEWSV (0, 0);	200	sv = NEWSV (0, 0);
		201
		202	#ifdef SvPADBUSY
159	if (!SvPADBUSY (sv))	203	if (!SvPADBUSY (sv))
		204	#endif
160	SvPADMY_on (sv);	205	SvPADMY_on (sv);
		206
161	npad[ix] = sv;	207	npad[ix] = sv;
162	}	208	}
163	}	209	}
164	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	210	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
165	{	211	{
…		…
194	#endif	240	#endif
195		241
196	return newpadlist;	242	return newpadlist;
197	}	243	}
198		244
199	#ifdef MAY_FLUSH
200	STATIC void	245	STATIC void
201	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
202	{	247	{
203	/* may be during global destruction */	248	/* may be during global destruction */
204	if (SvREFCNT(padlist))	249	if (SvREFCNT (padlist))
205	{	250	{
206	I32 i = AvFILLp(padlist);	251	I32 i = AvFILLp (padlist);
207	while (i >= 0)	252	while (i >= 0)
208	{	253	{
209	SV **svp = av_fetch(padlist, i--, FALSE);	254	SV **svp = av_fetch (padlist, i--, FALSE);
210	SV sv = svp ? svp : Nullsv;
211	if (sv)	255	if (svp)
		256	{
		257	SV *sv;
		258	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
212	SvREFCNT_dec(sv);	259	SvREFCNT_dec (sv);
		260
		261	SvREFCNT_dec (*svp);
		262	}
213	}	263	}
214		264
215	SvREFCNT_dec((SV*)padlist);	265	SvREFCNT_dec ((SV*)padlist);
216	}	266	}
217	}	267	}
218	#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};
219		285
220	/* the next two functions merely cache the padlists */	286	/* the next two functions merely cache the padlists */
221	STATIC void	287	STATIC void
222	get_padlist (CV *cv)	288	get_padlist (pTHX_ CV *cv)
223	{	289	{
224	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
225		291
226	if (he && AvFILLp ((AV )he) >= 0)	292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
227	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
228	else	294	else
229	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
230	}	296	}
231		297
232	STATIC void	298	STATIC void
233	put_padlist (CV *cv)	299	put_padlist (pTHX_ CV *cv)
234	{	300	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
236		302
237	if (SvTYPE (*he) != SVt_PVAV)	303	if (!mg)
238	{	304	{
239	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;
240	he = (SV )newAV ();	308	mg->mg_obj = (SV *)newAV ();
241	}	309	}
242		310
243	av_push ((AV )he, (SV *)CvPADLIST (cv));	311	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
244	}	312	}
245
246	#ifdef MAY_FLUSH
247	STATIC void
248	flush_padlist_cache ()
249	{
250	HV *hv = padlist_cache;
251	padlist_cache = newHV ();
252
253	if (hv_iterinit (hv))
254	{
255	HE *he;
256	AV *padlist;
257
258	while (!!(he = hv_iternext (hv)))
259	{
260	AV av = (AV )HeVAL(he);
261
262	/* casting is fun. */
263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
264	free_padlist (padlist);
265	}
266	}
267
268	SvREFCNT_dec (hv);
269	}
270	#endif
271		313
272	#define SB do {	314	#define SB do {
273	#define SE } while (0)	315	#define SE } while (0)
274		316
275	#define LOAD(state) load_state(aTHX_ (state));	317	#define LOAD(state) load_state(aTHX_ (state));
276	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	318	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277		319
278	#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
279		321
280	static void	322	static void
281	load_state(pTHX_ Coro__State c)	323	load_state(pTHX_ Coro__State c)
282	{	324	{
283	PL_dowarn = c->dowarn;	325	PL_dowarn = c->dowarn;
…		…
287	PL_curstack = c->curstack;	329	PL_curstack = c->curstack;
288	PL_mainstack = c->mainstack;	330	PL_mainstack = c->mainstack;
289	PL_stack_sp = c->stack_sp;	331	PL_stack_sp = c->stack_sp;
290	PL_op = c->op;	332	PL_op = c->op;
291	PL_curpad = c->curpad;	333	PL_curpad = c->curpad;
		334	PL_comppad = c->comppad;
		335	PL_compcv = c->compcv;
292	PL_stack_base = c->stack_base;	336	PL_stack_base = c->stack_base;
293	PL_stack_max = c->stack_max;	337	PL_stack_max = c->stack_max;
294	PL_tmps_stack = c->tmps_stack;	338	PL_tmps_stack = c->tmps_stack;
295	PL_tmps_floor = c->tmps_floor;	339	PL_tmps_floor = c->tmps_floor;
296	PL_tmps_ix = c->tmps_ix;	340	PL_tmps_ix = c->tmps_ix;
…		…
305	PL_savestack_ix = c->savestack_ix;	349	PL_savestack_ix = c->savestack_ix;
306	PL_savestack_max = c->savestack_max;	350	PL_savestack_max = c->savestack_max;
307	PL_retstack = c->retstack;	351	PL_retstack = c->retstack;
308	PL_retstack_ix = c->retstack_ix;	352	PL_retstack_ix = c->retstack_ix;
309	PL_retstack_max = c->retstack_max;	353	PL_retstack_max = c->retstack_max;
		354	PL_curpm = c->curpm;
310	PL_curcop = c->curcop;	355	PL_curcop = c->curcop;
311	PL_top_env = c->top_env;	356	PL_top_env = c->top_env;
312		357
313	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	358	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
314	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	359	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
323	{	368	{
324	AV padlist = (AV )POPs;	369	AV padlist = (AV )POPs;
325		370
326	if (padlist)	371	if (padlist)
327	{	372	{
328	put_padlist (cv); /* mark this padlist as available */	373	put_padlist (aTHX_ cv); /* mark this padlist as available */
329	CvPADLIST(cv) = padlist;	374	CvPADLIST(cv) = padlist;
330	#ifdef USE_THREADS
331	/CvOWNER(cv) = (struct perl_thread )POPs;*/
332	#endif
333	}	375	}
334		376
335	++CvDEPTH(cv);	377	++CvDEPTH(cv);
336	}	378	}
337		379
…		…
364	if (CxTYPE(cx) == CXt_SUB)	406	if (CxTYPE(cx) == CXt_SUB)
365	{	407	{
366	CV *cv = cx->blk_sub.cv;	408	CV *cv = cx->blk_sub.cv;
367	if (CvDEPTH(cv))	409	if (CvDEPTH(cv))
368	{	410	{
369	#ifdef USE_THREADS
370	/XPUSHs ((SV )CvOWNER(cv));*/
371	/CvOWNER(cv) = 0;/
372	/error must unlock this cv etc.. etc.../
373	#endif
374	EXTEND (SP, CvDEPTH(cv)*2);	411	EXTEND (SP, CvDEPTH(cv)*2);
375		412
376	while (--CvDEPTH(cv))	413	while (--CvDEPTH(cv))
377	{	414	{
378	/* this tells the restore code to increment CvDEPTH */	415	/* this tells the restore code to increment CvDEPTH */
…		…
381	}	418	}
382		419
383	PUSHs ((SV *)CvPADLIST(cv));	420	PUSHs ((SV *)CvPADLIST(cv));
384	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
385		422
386	get_padlist (cv); /* this is a monster */	423	get_padlist (aTHX_ cv); /* this is a monster */
387	}	424	}
388	}	425	}
		426	#ifdef CXt_FORMAT
389	else if (CxTYPE(cx) == CXt_FORMAT)	427	else if (CxTYPE(cx) == CXt_FORMAT)
390	{	428	{
391	/* I never used formats, so how should I know how these are implemented? */	429	/* I never used formats, so how should I know how these are implemented? */
392	/* my bold guess is as a simple, plain sub... */	430	/* my bold guess is as a simple, plain sub... */
393	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	431	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394	}	432	}
		433	#endif
395	}	434	}
396		435
397	if (top_si->si_type == PERLSI_MAIN)	436	if (top_si->si_type == PERLSI_MAIN)
398	break;	437	break;
399		438
…		…
416	c->curstack = PL_curstack;	455	c->curstack = PL_curstack;
417	c->mainstack = PL_mainstack;	456	c->mainstack = PL_mainstack;
418	c->stack_sp = PL_stack_sp;	457	c->stack_sp = PL_stack_sp;
419	c->op = PL_op;	458	c->op = PL_op;
420	c->curpad = PL_curpad;	459	c->curpad = PL_curpad;
		460	c->comppad = PL_comppad;
		461	c->compcv = PL_compcv;
421	c->stack_base = PL_stack_base;	462	c->stack_base = PL_stack_base;
422	c->stack_max = PL_stack_max;	463	c->stack_max = PL_stack_max;
423	c->tmps_stack = PL_tmps_stack;	464	c->tmps_stack = PL_tmps_stack;
424	c->tmps_floor = PL_tmps_floor;	465	c->tmps_floor = PL_tmps_floor;
425	c->tmps_ix = PL_tmps_ix;	466	c->tmps_ix = PL_tmps_ix;
…		…
434	c->savestack_ix = PL_savestack_ix;	475	c->savestack_ix = PL_savestack_ix;
435	c->savestack_max = PL_savestack_max;	476	c->savestack_max = PL_savestack_max;
436	c->retstack = PL_retstack;	477	c->retstack = PL_retstack;
437	c->retstack_ix = PL_retstack_ix;	478	c->retstack_ix = PL_retstack_ix;
438	c->retstack_max = PL_retstack_max;	479	c->retstack_max = PL_retstack_max;
		480	c->curpm = PL_curpm;
439	c->curcop = PL_curcop;	481	c->curcop = PL_curcop;
440	c->top_env = PL_top_env;	482	c->top_env = PL_top_env;
441	}	483	}
442		484
443	/*	485	/*
444	* allocate various perl stacks. This is an exact copy	486	* allocate various perl stacks. This is an exact copy
445	* of perl.c:init_stacks, except that it uses less memory	487	* of perl.c:init_stacks, except that it uses less memory
446	* on the assumption that coroutines do not usually need	488	* on the (sometimes correct) assumption that coroutines do
447	* a lot of stackspace.	489	* not usually need a lot of stackspace.
448	*/	490	*/
449	STATIC void	491	STATIC void
450	coro_init_stacks (pTHX)	492	coro_init_stacks (pTHX)
451	{	493	{
		494	LOCK;
		495
452	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	496	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
453	PL_curstackinfo->si_type = PERLSI_MAIN;	497	PL_curstackinfo->si_type = PERLSI_MAIN;
454	PL_curstack = PL_curstackinfo->si_stack;	498	PL_curstack = PL_curstackinfo->si_stack;
455	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	499	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
456		500
…		…
465		509
466	New(54,PL_markstack,16,I32);	510	New(54,PL_markstack,16,I32);
467	PL_markstack_ptr = PL_markstack;	511	PL_markstack_ptr = PL_markstack;
468	PL_markstack_max = PL_markstack + 16;	512	PL_markstack_max = PL_markstack + 16;
469		513
		514	#ifdef SET_MARK_OFFSET
470	SET_MARK_OFFSET;	515	SET_MARK_OFFSET;
		516	#endif
471		517
472	New(54,PL_scopestack,16,I32);	518	New(54,PL_scopestack,16,I32);
473	PL_scopestack_ix = 0;	519	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	520	PL_scopestack_max = 16;
475		521
…		…
478	PL_savestack_max = 96;	524	PL_savestack_max = 96;
479		525
480	New(54,PL_retstack,8,OP*);	526	New(54,PL_retstack,8,OP*);
481	PL_retstack_ix = 0;	527	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	528	PL_retstack_max = 8;
		529
		530	UNLOCK;
483	}	531	}
484		532
485	/*	533	/*
486	* destroy the stacks, the callchain etc...	534	* destroy the stacks, the callchain etc...
487	* still there is a memleak of 128 bytes...
488	*/	535	*/
489	STATIC void	536	STATIC void
490	destroy_stacks(pTHX)	537	destroy_stacks(pTHX)
491	{	538	{
		539	if (!IN_DESTRUCT)
		540	{
492	/* is this ugly, I ask? */	541	/* is this ugly, I ask? */
493	while (PL_scopestack_ix)	542	LEAVE_SCOPE (0);
494	LEAVE;
495		543
496	/* sure it is, but more important: is it correct?? :/ */	544	/* sure it is, but more important: is it correct?? :/ */
497	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
498	FREETMPS;	545	FREETMPS;
		546
		547	/POPSTACK_TO (PL_mainstack);//D//use/
		548	}
499		549
500	while (PL_curstackinfo->si_next)	550	while (PL_curstackinfo->si_next)
501	PL_curstackinfo = PL_curstackinfo->si_next;	551	PL_curstackinfo = PL_curstackinfo->si_next;
502		552
503	while (PL_curstackinfo)	553	while (PL_curstackinfo)
504	{	554	{
505	PERL_SI *p = PL_curstackinfo->si_prev;	555	PERL_SI *p = PL_curstackinfo->si_prev;
506		556
507	{	557	{ /D//remove/
508	dSP;	558	dSP;
509	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	559	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
510	PUTBACK; /* possibly superfluous */	560	PUTBACK; /* possibly superfluous */
511	}	561	}
512		562
513	if (PL_main_cv != Nullcv) /* don't during destruction. hack? */	563	if (!IN_DESTRUCT)
514	dounwind(-1);	564	{
515		565	dounwind (-1);/D//remove/
516	SvREFCNT_dec(PL_curstackinfo->si_stack);	566	SvREFCNT_dec (PL_curstackinfo->si_stack);
		567	}
		568
517	Safefree(PL_curstackinfo->si_cxstack);	569	Safefree (PL_curstackinfo->si_cxstack);
518	Safefree(PL_curstackinfo);	570	Safefree (PL_curstackinfo);
519	PL_curstackinfo = p;	571	PL_curstackinfo = p;
520	}	572	}
521		573
522	Safefree(PL_tmps_stack);	574	Safefree (PL_tmps_stack);
523	Safefree(PL_markstack);	575	Safefree (PL_markstack);
524	Safefree(PL_scopestack);	576	Safefree (PL_scopestack);
525	Safefree(PL_savestack);	577	Safefree (PL_savestack);
526	Safefree(PL_retstack);	578	Safefree (PL_retstack);
527	}	579	}
528		580
529	static void	581	static void
530	allocate_stack (Coro__State ctx, int alloc)	582	allocate_stack (Coro__State ctx, int alloc)
531	{	583	{
…		…
534	New (0, stack, 1, coro_stack);	586	New (0, stack, 1, coro_stack);
535		587
536	stack->refcnt = 1;	588	stack->refcnt = 1;
537	stack->usecnt = 1;	589	stack->usecnt = 1;
538	stack->gencnt = ctx->gencnt = 0;	590	stack->gencnt = ctx->gencnt = 0;
		591
539	if (alloc)	592	if (alloc)
540	{	593	{
541	#ifdef HAVE_MMAP	594	#if HAVE_MMAP
542	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	595	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
543	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	596	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
544	if (stack->sptr == (void *)-1)	597	if (stack->sptr == (void *)-1)
545	#endif	598	#endif
546	{	599	{
547	/FIXME//D//* reasonable stack size! */	600	/FIXME//D//* reasonable stack size! */
548	stack->ssize = -4096 * sizeof (long);	601	stack->ssize = - (STACKSIZE * sizeof (long));
549	New (0, stack->sptr, 4096, long);	602	New (0, stack->sptr, STACKSIZE, long);
550	}	603	}
551	}	604	}
552	else	605	else
553	stack->sptr = 0;	606	stack->sptr = 0;
554		607
…		…
568	{	621	{
569	#ifdef HAVE_MMAP	622	#ifdef HAVE_MMAP
570	if (stack->ssize > 0 && stack->sptr)	623	if (stack->ssize > 0 && stack->sptr)
571	munmap (stack->sptr, stack->ssize);	624	munmap (stack->sptr, stack->ssize);
572	else	625	else
573	#else	626	#endif
574	Safefree (stack->sptr);	627	Safefree (stack->sptr);
575	#endif	628
576	Safefree (stack);	629	Safefree (stack);
577	}	630	}
578	else if (ctx->gencnt == stack->gencnt)	631	else if (ctx->gencnt == stack->gencnt)
579	--stack->usecnt;	632	--stack->usecnt;
580	}	633	}
…		…
584	setup_coro (void *arg)	637	setup_coro (void *arg)
585	{	638	{
586	/*	639	/*
587	* emulate part of the perl startup here.	640	* emulate part of the perl startup here.
588	*/	641	*/
		642	dTHX;
589	dSP;	643	dSP;
590	Coro__State ctx = (Coro__State)arg;	644	Coro__State ctx = (Coro__State)arg;
591	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	645	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
592		646
593	coro_init_stacks (aTHX);	647	coro_init_stacks (aTHX);
594	/PL_curcop = 0;/	648	/PL_curcop = 0;/
595	/PL_in_eval = PL_in_eval;/ /* inherit */	649	/PL_in_eval = PL_in_eval;/ /* inherit */
596	SvREFCNT_dec (GvAV (PL_defgv));	650	SvREFCNT_dec (GvAV (PL_defgv));
597	GvAV (PL_defgv) = ctx->args;	651	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
598		652
599	SPAGAIN;	653	SPAGAIN;
600		654
601	if (ctx->stack)	655	if (ctx->stack)
602	{	656	{
…		…
629	* that doesn't matter, though, since it is only	683	* that doesn't matter, though, since it is only
630	* pp_nextstate and we never return...	684	* pp_nextstate and we never return...
631	* ah yes, and I don't care anyways ;)	685	* ah yes, and I don't care anyways ;)
632	*/	686	*/
633	PUTBACK;	687	PUTBACK;
634	PL_op = pp_entersub();	688	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
635	SPAGAIN;	689	SPAGAIN;
636		690
637	ENTER; /* necessary e.g. for dounwind */	691	ENTER; /* necessary e.g. for dounwind */
638	}	692	}
639	}	693	}
…		…
642	continue_coro (void *arg)	696	continue_coro (void *arg)
643	{	697	{
644	/*	698	/*
645	* this is a _very_ stripped down perl interpreter ;)	699	* this is a _very_ stripped down perl interpreter ;)
646	*/	700	*/
		701	dTHX;
647	Coro__State ctx = (Coro__State)arg;	702	Coro__State ctx = (Coro__State)arg;
		703	JMPENV coro_start_env;
648		704
649	/FIXME//* must set up top_env here */	705	PL_top_env = &ctx->start_env;
		706
650	ctx->cursp = 0;	707	ctx->cursp = 0;
651	PL_op = PL_op->op_next;	708	PL_op = PL_op->op_next;
652	CALLRUNOPS(aTHX);	709	CALLRUNOPS(aTHX);
653		710
654	abort ();	711	abort ();
655	}	712	}
656		713
657	STATIC void	714	STATIC void
658	transfer(pTHX_ struct coro prev, struct coro next, int flags)	715	transfer (pTHX_ struct coro prev, struct coro next, int flags)
659	{	716	{
660	dSTACKLEVEL;	717	dSTACKLEVEL;
661	static struct coro *xnext;
662		718
663	if (prev != next)	719	if (prev != next)
664	{	720	{
665	xnext = next;
666
667	if (next->mainstack)	721	if (next->mainstack)
668	{	722	{
		723	LOCK;
669	SAVE (prev, flags);	724	SAVE (prev, flags);
670	LOAD (next);	725	LOAD (next);
		726	UNLOCK;
671		727
672	/* mark this state as in-use */	728	/* mark this state as in-use */
673	next->mainstack = 0;	729	next->mainstack = 0;
674	next->tmps_ix = -2;	730	next->tmps_ix = -2;
675		731
…		…
694	continue_coro, (void *)next,	750	continue_coro, (void *)next,
695	next->stack->sptr, labs (next->stack->ssize));	751	next->stack->sptr, labs (next->stack->ssize));
696	}	752	}
697		753
698	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		755	prev->cursp = stacklevel;
699	/* don't add any code here */	756	/* don't add any code here */
700	}	757	}
701		758	else
		759	next->cursp = stacklevel;
702	}	760	}
703	else if (next->tmps_ix == -2)	761	else if (next->tmps_ix == -2)
704	croak ("tried to transfer to running coroutine");	762	croak ("tried to transfer to running coroutine");
705	else	763	else
706	{	764	{
		765	LOCK;
707	SAVE (prev, -1); /* first get rid of the old state */	766	SAVE (prev, -1); /* first get rid of the old state */
		767	UNLOCK;
708		768
709	if (flags & TRANSFER_SAVE_CCTXT)	769	if (flags & TRANSFER_SAVE_CCTXT)
710	{	770	{
711	if (!prev->stack)	771	if (!prev->stack)
712	allocate_stack (prev, 0);	772	allocate_stack (prev, 0);
713		773
714	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	774	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
715	{	775	{
		776	PL_top_env = &next->start_env;
		777
716	setup_coro (next);	778	setup_coro (next);
		779	next->cursp = stacklevel;
717		780
718	prev->stack->refcnt++;	781	prev->stack->refcnt++;
719	prev->stack->usecnt++;	782	prev->stack->usecnt++;
720	next->stack = prev->stack;	783	next->stack = prev->stack;
721	next->gencnt = prev->gencnt;	784	next->gencnt = prev->gencnt;
722	}	785	}
723	else	786	else
724	{	787	{
		788	assert (!next->stack);
725	allocate_stack (next, 1);	789	allocate_stack (next, 1);
726	coro_create (&(next->stack->cctx),	790	coro_create (&(next->stack->cctx),
727	setup_coro, (void *)next,	791	setup_coro, (void *)next,
728	next->stack->sptr, labs (next->stack->ssize));	792	next->stack->sptr, labs (next->stack->ssize));
729	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	793	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		794	prev->cursp = stacklevel;
730	/* don't add any code here */	795	/* don't add any code here */
731	}	796	}
732	}	797	}
733	else	798	else
		799	{
734	setup_coro (next);	800	setup_coro (next);
		801	next->cursp = stacklevel;
		802	}
735	}	803	}
736	}	804	}
737		805
738	/*	806	LOCK;
739	* xnext is now either prev or next, depending on wether	807	if (coro_mortal)
740	* we switched the c stack or not. that's why i use a global
741	* variable, that should become thread-specific at one point.
742	*/
743	xnext->cursp = stacklevel;
744	}
745
746	static struct coro *
747	sv_to_coro (SV arg, const char funcname, const char *varname)
748	{
749	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
750	{	808	{
751	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	809	SvREFCNT_dec (coro_mortal);
752		810	coro_mortal = 0;
753	if (!he)
754	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
755
756	arg = HeVAL(he);
757	}	811	}
758		812	UNLOCK;
		813	}
		814
		815	#define SV_CORO(sv,func) \
		816	do { \
		817	if (SvROK (sv)) \
		818	sv = SvRV (sv); \
		819	\
		820	if (SvTYPE (sv) == SVt_PVHV) \
		821	{ \
		822	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		823	\
		824	if (!he) \
		825	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		826	\
		827	(sv) = SvRV (HeVAL(he)); \
		828	} \
		829	\
759	/* must also be changed inside Coro::Cont::yield */	830	/* must also be changed inside Coro::Cont::yield */ \
760	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	831	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
761	return (struct coro ) SvIV((SV)SvRV(arg));
762
763	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	832	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
764	/NORETURN/	833	\
765	}	834	} while(0)
		835
		836	#define SvSTATE(sv) (struct coro *)SvIV (sv)
766		837
767	static void	838	static void
768	api_transfer(pTHX_ SV prev, SV next, int flags)	839	api_transfer(pTHX_ SV prev, SV next, int flags)
769	{	840	{
770	transfer(aTHX_	841	SV_CORO (prev, "Coro::transfer");
771	sv_to_coro (prev, "Coro::transfer", "prev"),	842	SV_CORO (next, "Coro::transfer");
772	sv_to_coro (next, "Coro::transfer", "next"),	843
773	flags);	844	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
774	}	845	}
775		846
776	/ Coro ******************************************************************/	847	/ Coro ******************************************************************/
777		848
778	#define PRIO_MAX 3	849	#define PRIO_MAX 3
…		…
786	static GV coro_current, coro_idle;	857	static GV coro_current, coro_idle;
787	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	858	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
788	static int coro_nready;	859	static int coro_nready;
789		860
790	static void	861	static void
791	coro_enq (SV *sv)	862	coro_enq (pTHX_ SV *sv)
792	{	863	{
793	if (SvROK (sv))	864	if (SvTYPE (sv) == SVt_PVHV)
794	{	865	{
795	SV *hv = SvRV (sv);
796	if (SvTYPE (hv) == SVt_PVHV)
797	{
798	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);	866	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
799	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;	867	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
800		868
801	prio = prio > PRIO_MAX ? PRIO_MAX	869	prio = prio > PRIO_MAX ? PRIO_MAX
802	: prio < PRIO_MIN ? PRIO_MIN	870	: prio < PRIO_MIN ? PRIO_MIN
803	: prio;	871	: prio;
804		872
805	av_push (coro_ready [prio - PRIO_MIN], sv);	873	av_push (coro_ready [prio - PRIO_MIN], sv);
806	coro_nready++;	874	coro_nready++;
807		875
808	return;	876	return;
809	}
810	}	877	}
811		878
812	croak ("Coro::ready tried to enqueue something that is not a coroutine");	879	croak ("Coro::ready tried to enqueue something that is not a coroutine");
813	}	880	}
814		881
815	static SV *	882	static SV *
816	coro_deq (int min_prio)	883	coro_deq (pTHX_ int min_prio)
817	{	884	{
818	int prio = PRIO_MAX - PRIO_MIN;	885	int prio = PRIO_MAX - PRIO_MIN;
819		886
820	min_prio -= PRIO_MIN;	887	min_prio -= PRIO_MIN;
821	if (min_prio < 0)	888	if (min_prio < 0)
…		…
832	}	899	}
833		900
834	static void	901	static void
835	api_ready (SV *coro)	902	api_ready (SV *coro)
836	{	903	{
		904	dTHX;
		905
		906	if (SvROK (coro))
		907	coro = SvRV (coro);
		908
		909	LOCK;
837	coro_enq (SvREFCNT_inc (coro));	910	coro_enq (aTHX_ SvREFCNT_inc (coro));
		911	UNLOCK;
838	}	912	}
839		913
840	static void	914	static void
841	api_schedule (int cede)	915	api_schedule (void)
842	{	916	{
		917	dTHX;
		918
843	SV prev, next;	919	SV prev, next;
844		920
		921	LOCK;
		922
845	prev = GvSV (coro_current);	923	prev = SvRV (GvSV (coro_current));
846
847	if (cede)
848	coro_enq (SvREFCNT_inc (prev));
849
850	next = coro_deq (PRIO_MIN);	924	next = coro_deq (aTHX_ PRIO_MIN);
851		925
852	if (!next)	926	if (!next)
853	next = SvREFCNT_inc (GvSV (coro_idle));	927	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
854		928
855	GvSV (coro_current) = SvREFCNT_inc (next);	929	/* free this only after the transfer */
856	transfer (aTHX_	930	coro_mortal = prev;
857	sv_to_coro (prev, "Coro::schedule", "current coroutine"),	931	SV_CORO (prev, "Coro::schedule");
858	sv_to_coro (next, "Coro::schedule", "next coroutine"),	932
		933	SvRV (GvSV (coro_current)) = next;
		934
		935	SV_CORO (next, "Coro::schedule");
		936
		937	UNLOCK;
		938
		939	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
859	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	940	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
860	SvREFCNT_dec (next);	941	}
861	SvREFCNT_dec (prev);	942
		943	static void
		944	api_cede (void)
		945	{
		946	dTHX;
		947
		948	LOCK;
		949	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		950	UNLOCK;
		951
		952	api_schedule ();
862	}	953	}
863		954
864	MODULE = Coro::State PACKAGE = Coro::State	955	MODULE = Coro::State PACKAGE = Coro::State
865		956
866	PROTOTYPES: ENABLE	957	PROTOTYPES: ENABLE
867		958
868	BOOT:	959	BOOT:
869	{ /* {} necessary for stoopid perl-5.6.x */	960	{ /* {} necessary for stoopid perl-5.6.x */
		961	#ifdef USE_ITHREADS
		962	MUTEX_INIT (&coro_mutex);
		963	#endif
		964
870	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	965	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
871	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	966	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
872	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	967	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
873		968
874	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	969	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
875	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	970	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
876	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	971	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
877	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	972	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
878
879	if (!padlist_cache)
880	padlist_cache = newHV ();
881		973
882	main_mainstack = PL_mainstack;	974	main_mainstack = PL_mainstack;
883		975
884	coroapi.ver = CORO_API_VERSION;	976	coroapi.ver = CORO_API_VERSION;
885	coroapi.transfer = api_transfer;	977	coroapi.transfer = api_transfer;
…		…
893	Coro__State coro;	985	Coro__State coro;
894		986
895	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	987	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
896	croak ("Coro::State::_newprocess expects an arrayref");	988	croak ("Coro::State::_newprocess expects an arrayref");
897		989
898	New (0, coro, 1, struct coro);	990	Newz (0, coro, 1, struct coro);
899		991
900	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	992	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
901	coro->mainstack = 0; /* actual work is done inside transfer */	993	/coro->mainstack = 0; //actual work is done inside transfer /
902	coro->stack = 0;	994	/coro->stack = 0;/
		995
		996	/* same as JMPENV_BOOTSTRAP */
		997	/* we might be able to recycle start_env, but safe is safe */
		998	/Zero(&coro->start_env, 1, JMPENV);/
		999	coro->start_env.je_ret = -1;
		1000	coro->start_env.je_mustcatch = TRUE;
903		1001
904	RETVAL = coro;	1002	RETVAL = coro;
905	OUTPUT:	1003	OUTPUT:
906	RETVAL	1004	RETVAL
907		1005
908	void	1006	void
909	transfer(prev, next, flags)	1007	transfer(prev, next, flags)
910	Coro::State_or_hashref prev	1008	SV *prev
911	Coro::State_or_hashref next	1009	SV *next
912	int flags	1010	int flags
913	PROTOTYPE: @	1011	PROTOTYPE: @
914	CODE:	1012	CODE:
915	PUTBACK;	1013	PUTBACK;
		1014	SV_CORO (next, "Coro::transfer");
		1015	SV_CORO (prev, "Coro::transfer");
916	transfer (aTHX_ prev, next, flags);	1016	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
917	SPAGAIN;	1017	SPAGAIN;
918		1018
919	void	1019	void
920	DESTROY(coro)	1020	DESTROY(coro)
921	Coro::State coro	1021	Coro::State coro
…		…
924	if (coro->mainstack && coro->mainstack != main_mainstack)	1024	if (coro->mainstack && coro->mainstack != main_mainstack)
925	{	1025	{
926	struct coro temp;	1026	struct coro temp;
927		1027
928	PUTBACK;	1028	PUTBACK;
929	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1029	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
930	LOAD(aTHX_ coro);	1030	LOAD (aTHX_ coro);
931	SPAGAIN;	1031	SPAGAIN;
932		1032
933	destroy_stacks (aTHX);	1033	destroy_stacks (aTHX);
934		1034
935	LOAD((&temp)); /* this will get rid of defsv etc.. */	1035	LOAD ((&temp)); /* this will get rid of defsv etc.. */
936	SPAGAIN;	1036	SPAGAIN;
937		1037
938	coro->mainstack = 0;	1038	coro->mainstack = 0;
939	}	1039	}
940		1040
941	deallocate_stack (coro);	1041	deallocate_stack (coro);
942		1042	SvREFCNT_dec (coro->args);
943	Safefree (coro);	1043	Safefree (coro);
944
945	void
946	flush()
947	CODE:
948	#ifdef MAY_FLUSH
949	flush_padlist_cache ();
950	#endif
951		1044
952	void	1045	void
953	_exit(code)	1046	_exit(code)
954	int code	1047	int code
955	PROTOTYPE: $	1048	PROTOTYPE: $
956	CODE:	1049	CODE:
957	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
958	_exit (code);	1050	_exit (code);
959	#else
960	signal (SIGTERM, SIG_DFL);
961	raise (SIGTERM);
962	exit (code);
963	#endif
964		1051
965	MODULE = Coro::State PACKAGE = Coro::Cont	1052	MODULE = Coro::State PACKAGE = Coro::Cont
966		1053
967	# this is slightly dirty (should expose a c-level api)	1054	# this is slightly dirty (should expose a c-level api)
968		1055
969	void	1056	void
970	yield(...)	1057	yield(...)
971	PROTOTYPE: @	1058	PROTOTYPE: @
972	CODE:	1059	CODE:
973	static SV *returnstk;	1060	SV *yieldstack;
974	SV *sv;	1061	SV *sv;
975	AV *defav = GvAV (PL_defgv);	1062	AV *defav = GvAV (PL_defgv);
976	struct coro prev, next;	1063	struct coro prev, next;
977		1064
978	if (!returnstk)	1065	yieldstack = *hv_fetch (
979	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1066	(HV *)SvRV (GvSV (coro_current)),
		1067	"yieldstack", sizeof ("yieldstack") - 1,
		1068	0
		1069	);
980		1070
981	/* set up @_ -- ugly */	1071	/* set up @_ -- ugly */
982	av_clear (defav);	1072	av_clear (defav);
983	av_fill (defav, items - 1);	1073	av_fill (defav, items - 1);
984	while (items--)	1074	while (items--)
985	av_store (defav, items, SvREFCNT_inc (ST(items)));	1075	av_store (defav, items, SvREFCNT_inc (ST(items)));
986		1076
987	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
988	sv = av_pop ((AV *)SvRV (returnstk));	1077	sv = av_pop ((AV *)SvRV (yieldstack));
989	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1078	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
990	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1079	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
991	SvREFCNT_dec (sv);	1080	SvREFCNT_dec (sv);
992		1081
993	transfer(aTHX_ prev, next, 0);	1082	transfer (aTHX_ prev, next, 0);
994		1083
995	MODULE = Coro::State PACKAGE = Coro	1084	MODULE = Coro::State PACKAGE = Coro
996		1085
997	# this is slightly dirty (should expose a c-level api)	1086	# this is slightly dirty (should expose a c-level api)
998		1087
…		…
1016		1105
1017	{	1106	{
1018	SV *sv = perl_get_sv("Coro::API", 1);	1107	SV *sv = perl_get_sv("Coro::API", 1);
1019		1108
1020	coroapi.schedule = api_schedule;	1109	coroapi.schedule = api_schedule;
		1110	coroapi.cede = api_cede;
1021	coroapi.ready = api_ready;	1111	coroapi.ready = api_ready;
1022	coroapi.nready = &coro_nready;	1112	coroapi.nready = &coro_nready;
1023	coroapi.current = coro_current;	1113	coroapi.current = coro_current;
1024		1114
1025	GCoroAPI = &coroapi;	1115	GCoroAPI = &coroapi;
1026	sv_setiv(sv, (IV)&coroapi);	1116	sv_setiv(sv, (IV)&coroapi);
1027	SvREADONLY_on(sv);	1117	SvREADONLY_on(sv);
1028	}	1118	}
1029	}	1119	}
1030		1120
		1121	#if !PERL_MICRO
		1122
1031	void	1123	void
1032	ready(self)	1124	ready(self)
1033	SV * self	1125	SV * self
		1126	PROTOTYPE: $
1034	CODE:	1127	CODE:
1035	api_ready (self);	1128	api_ready (self);
		1129
		1130	#endif
1036		1131
1037	int	1132	int
1038	nready(...)	1133	nready(...)
1039	PROTOTYPE:	1134	PROTOTYPE:
1040	CODE:	1135	CODE:
…		…
1043	RETVAL	1138	RETVAL
1044		1139
1045	void	1140	void
1046	schedule(...)	1141	schedule(...)
1047	PROTOTYPE:	1142	PROTOTYPE:
1048	ALIAS:
1049	cede = 1
1050	CODE:	1143	CODE:
1051	api_schedule (ix);	1144	api_schedule ();
1052		1145
		1146	void
		1147	cede(...)
		1148	PROTOTYPE:
		1149	CODE:
		1150	api_cede ();
		1151
		1152	# and these are hacks
		1153	SV *
		1154	_aio_get_state ()
		1155	CODE:
		1156	{
		1157	struct {
		1158	int errorno;
		1159	int laststype;
		1160	int laststatval;
		1161	Stat_t statcache;
		1162	} data;
		1163
		1164	data.errorno = errno;
		1165	data.laststype = PL_laststype;
		1166	data.laststatval = PL_laststatval;
		1167	data.statcache = PL_statcache;
		1168
		1169	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1170	}
		1171	OUTPUT:
		1172	RETVAL
		1173
		1174	void
		1175	_aio_set_state (char *data_)
		1176	PROTOTYPE: $
		1177	CODE:
		1178	{
		1179	struct {
		1180	int errorno;
		1181	int laststype;
		1182	int laststatval;
		1183	Stat_t statcache;
		1184	} data = (void )data_;
		1185
		1186	errno = data->errorno;
		1187	PL_laststype = data->laststype;
		1188	PL_laststatval = data->laststatval;
		1189	PL_statcache = data->statcache;
		1190	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.30 by root, Sat Aug 25 22:19:05 2001 UTC vs. Revision 1.70 by root, Mon Dec 26 19:26:52 2005 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.30 by root, Sat Aug 25 22:19:05 2001 UTC vs.
Revision 1.70 by root, Mon Dec 26 19:26:52 2005 UTC