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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.20 by root, Fri Aug 3 12:51:56 2001 UTC vs.
Revision 1.67 by root, Mon Dec 12 20:07:44 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"
		10
		11	// threaded perls might need much more, 65536 or more,
		12	// which is 0.5 to 1MB
		13	#define STACKSIZE 16384
		14
		15	#if PERL_VERSION < 6
		16	# ifndef PL_ppaddr
		17	# define PL_ppaddr ppaddr
		18	# endif
		19	# ifndef call_sv
		20	# define call_sv perl_call_sv
		21	# endif
		22	# ifndef get_sv
		23	# define get_sv perl_get_sv
		24	# endif
		25	# ifndef get_cv
		26	# define get_cv perl_get_cv
		27	# endif
		28	# ifndef IS_PADGV
		29	# define IS_PADGV(v) 0
		30	# endif
		31	# ifndef IS_PADCONST
		32	# define IS_PADCONST(v) 0
		33	# endif
		34	#endif
6		35
7	#include <signal.h>	36	#include <signal.h>
8		37
9	#ifdef HAVE_MMAP	38	#ifdef HAVE_MMAP
10	# include <unistd.h>	39	# include <unistd.h>
11	# include <sys/mman.h>	40	# include <sys/mman.h>
12	# ifndef MAP_ANON
13	# ifdef MAP_ANONYMOUS	41	# ifndef MAP_ANONYMOUS
14	# define MAP_ANON MAP_ANONYMOUS	42	# ifdef MAP_ANON
		43	# define MAP_ANONYMOUS MAP_ANON
15	# else	44	# else
16	# undef HAVE_MMAP	45	# undef HAVE_MMAP
17	# endif	46	# endif
18	# endif	47	# endif
19	#endif	48	#endif
20		49
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
34
35	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
36	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
37
38	#define SUB_INIT "Coro::State::initialize"	50	#define SUB_INIT "Coro::State::initialize"
39	#define UCORO_STATE "_coro_state"	51	#define UCORO_STATE "_coro_state"
40		52
41	/* The next macro should delcare a variable stacklevel that contains and approximation	53	/* 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	54	* to the current C stack pointer. Its property is that it changes with each call
43	* and should be unique. */	55	* and should be unique. */
44	#define dSTACKLEVEL void *stacklevel = &stacklevel	56	#define dSTACKLEVEL void *stacklevel = &stacklevel
45		57
		58	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		59
46	#define labs(l) ((l) >= 0 ? (l) : -(l))	60	#define labs(l) ((l) >= 0 ? (l) : -(l))
		61
		62	#include "CoroAPI.h"
		63
		64	#ifdef USE_ITHREADS
		65	static perl_mutex coro_mutex;
		66	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		67	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		68	#else
		69	# define LOCK 0
		70	# define UNLOCK 0
		71	#endif
		72
		73	static struct CoroAPI coroapi;
		74	static AV main_mainstack; / used to differentiate between $main and others */
		75	static HV *coro_state_stash;
		76	static SV *ucoro_state_sv;
		77	static U32 ucoro_state_hash;
		78	static SV coro_mortal; / will be freed after next transfer */
47		79
48	/* this is actually not only the c stack but also c registers etc... */	80	/* this is actually not only the c stack but also c registers etc... */
49	typedef struct {	81	typedef struct {
50	int refcnt; /* pointer reference counter */	82	int refcnt; /* pointer reference counter */
51	int usecnt; /* shared by how many coroutines */	83	int usecnt; /* shared by how many coroutines */
56	void *sptr;	88	void *sptr;
57	long ssize; /* positive == mmap, otherwise malloc */	89	long ssize; /* positive == mmap, otherwise malloc */
58	} coro_stack;	90	} coro_stack;
59		91
60	struct coro {	92	struct coro {
		93	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		94	JMPENV start_env;
		95
61	/* the optional C context */	96	/* the optional C context */
62	coro_stack *stack;	97	coro_stack *stack;
63	void *cursp;	98	void *cursp;
64	int gencnt;	99	int gencnt;
65		100
…		…
77	AV *curstack;	112	AV *curstack;
78	AV *mainstack;	113	AV *mainstack;
79	SV **stack_sp;	114	SV **stack_sp;
80	OP *op;	115	OP *op;
81	SV **curpad;	116	SV **curpad;
		117	AV *comppad;
		118	CV *compcv;
82	SV **stack_base;	119	SV **stack_base;
83	SV **stack_max;	120	SV **stack_max;
84	SV **tmps_stack;	121	SV **tmps_stack;
85	I32 tmps_floor;	122	I32 tmps_floor;
86	I32 tmps_ix;	123	I32 tmps_ix;
…		…
95	I32 savestack_ix;	132	I32 savestack_ix;
96	I32 savestack_max;	133	I32 savestack_max;
97	OP **retstack;	134	OP **retstack;
98	I32 retstack_ix;	135	I32 retstack_ix;
99	I32 retstack_max;	136	I32 retstack_max;
		137	PMOP *curpm;
100	COP *curcop;	138	COP *curcop;
101	JMPENV *top_env;	139	JMPENV *top_env;
102		140
103	/* data associated with this coroutine (initial args) */	141	/* data associated with this coroutine (initial args) */
104	AV *args;	142	AV *args;
105	};	143	};
106		144
107	typedef struct coro *Coro__State;	145	typedef struct coro *Coro__State;
108	typedef struct coro *Coro__State_or_hashref;	146	typedef struct coro *Coro__State_or_hashref;
109		147
110	static AV main_mainstack; / used to differentiate between $main and others */
111	static HV *coro_state_stash;
112	static SV *ucoro_state_sv;
113	static U32 ucoro_state_hash;
114	static HV *padlist_cache;
115
116	/* mostly copied from op.c:cv_clone2 */	148	/* mostly copied from op.c:cv_clone2 */
117	STATIC AV *	149	STATIC AV *
118	clone_padlist (AV *protopadlist)	150	clone_padlist (pTHX_ AV *protopadlist)
119	{	151	{
120	AV *av;	152	AV *av;
121	I32 ix;	153	I32 ix;
122	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	154	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
123	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	155	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
147	AvFLAGS (av) = AVf_REIFY;	179	AvFLAGS (av) = AVf_REIFY;
148		180
149	for (ix = fpad; ix > 0; ix--)	181	for (ix = fpad; ix > 0; ix--)
150	{	182	{
151	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	183	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		184
152	if (namesv && namesv != &PL_sv_undef)	185	if (namesv && namesv != &PL_sv_undef)
153	{	186	{
154	char name = SvPVX (namesv); / XXX */	187	char name = SvPVX (namesv); / XXX */
		188
155	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	189	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
156	{ /* lexical from outside? */	190	{ /* lexical from outside? */
157	npad[ix] = SvREFCNT_inc (ppad[ix]);	191	npad[ix] = SvREFCNT_inc (ppad[ix]);
158	}	192	}
159	else	193	else
…		…
165	sv = (SV *) newAV ();	199	sv = (SV *) newAV ();
166	else if (*name == '%')	200	else if (*name == '%')
167	sv = (SV *) newHV ();	201	sv = (SV *) newHV ();
168	else	202	else
169	sv = NEWSV (0, 0);	203	sv = NEWSV (0, 0);
		204
		205	#ifdef SvPADBUSY
170	if (!SvPADBUSY (sv))	206	if (!SvPADBUSY (sv))
		207	#endif
171	SvPADMY_on (sv);	208	SvPADMY_on (sv);
		209
172	npad[ix] = sv;	210	npad[ix] = sv;
173	}	211	}
174	}	212	}
175	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	213	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
176	{	214	{
…		…
205	#endif	243	#endif
206		244
207	return newpadlist;	245	return newpadlist;
208	}	246	}
209		247
210	#ifdef MAY_FLUSH	248	STATIC void
211	STATIC AV *
212	free_padlist (AV *padlist)	249	free_padlist (pTHX_ AV *padlist)
213	{	250	{
214	/* may be during global destruction */	251	/* may be during global destruction */
215	if (SvREFCNT(padlist))	252	if (SvREFCNT (padlist))
216	{	253	{
217	I32 i = AvFILLp(padlist);	254	I32 i = AvFILLp (padlist);
218	while (i >= 0)	255	while (i >= 0)
219	{	256	{
220	SV **svp = av_fetch(padlist, i--, FALSE);	257	SV **svp = av_fetch (padlist, i--, FALSE);
221	SV sv = svp ? svp : Nullsv;
222	if (sv)	258	if (svp)
		259	{
		260	SV *sv;
		261	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
223	SvREFCNT_dec(sv);	262	SvREFCNT_dec (sv);
		263
		264	SvREFCNT_dec (*svp);
		265	}
224	}	266	}
225		267
226	SvREFCNT_dec((SV*)padlist);	268	SvREFCNT_dec ((SV*)padlist);
227	}	269	}
228	}	270	}
229	#endif	271
		272	STATIC int
		273	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		274	{
		275	AV *padlist;
		276	AV av = (AV )mg->mg_obj;
		277
		278	/* casting is fun. */
		279	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		280	free_padlist (aTHX_ padlist);
		281
		282	SvREFCNT_dec (av);
		283	}
		284
		285	#define PERL_MAGIC_coro PERL_MAGIC_ext
		286
		287	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
230		288
231	/* the next two functions merely cache the padlists */	289	/* the next two functions merely cache the padlists */
232	STATIC void	290	STATIC void
233	get_padlist (CV *cv)	291	get_padlist (pTHX_ CV *cv)
234	{	292	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	293	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
236		294
237	if (he && AvFILLp ((AV )he) >= 0)	295	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
238	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	296	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
239	else	297	else
240	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	298	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
241	}	299	}
242		300
243	STATIC void	301	STATIC void
244	put_padlist (CV *cv)	302	put_padlist (pTHX_ CV *cv)
245	{	303	{
246	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	304	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
247		305
248	if (SvTYPE (*he) != SVt_PVAV)	306	if (!mg)
249	{	307	{
250	SvREFCNT_dec (*he);	308	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		309	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		310	mg->mg_virtual = &vtbl_coro;
251	he = (SV )newAV ();	311	mg->mg_obj = (SV *)newAV ();
252	}	312	}
253		313
254	av_push ((AV )he, (SV *)CvPADLIST (cv));	314	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
255	}	315	}
256
257	#ifdef MAY_FLUSH
258	STATIC void
259	flush_padlist_cache ()
260	{
261	HV *hv = padlist_cache;
262	padlist_cache = newHV ();
263
264	if (hv_iterinit (hv))
265	{
266	HE *he;
267	AV *padlist;
268
269	while (!!(he = hv_iternext (hv)))
270	{
271	AV av = (AV )HeVAL(he);
272
273	/* casting is fun. */
274	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
275	free_padlist (padlist);
276	}
277	}
278
279	SvREFCNT_dec (hv);
280	}
281	#endif
282		316
283	#define SB do {	317	#define SB do {
284	#define SE } while (0)	318	#define SE } while (0)
285		319
286	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	320	#define LOAD(state) load_state(aTHX_ (state));
287	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	321	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
288		322
289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	323	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
290		324
291	static void	325	static void
292	load_state(pTHX_ Coro__State c)	326	load_state(pTHX_ Coro__State c)
293	{	327	{
294	PL_dowarn = c->dowarn;	328	PL_dowarn = c->dowarn;
…		…
298	PL_curstack = c->curstack;	332	PL_curstack = c->curstack;
299	PL_mainstack = c->mainstack;	333	PL_mainstack = c->mainstack;
300	PL_stack_sp = c->stack_sp;	334	PL_stack_sp = c->stack_sp;
301	PL_op = c->op;	335	PL_op = c->op;
302	PL_curpad = c->curpad;	336	PL_curpad = c->curpad;
		337	PL_comppad = c->comppad;
		338	PL_compcv = c->compcv;
303	PL_stack_base = c->stack_base;	339	PL_stack_base = c->stack_base;
304	PL_stack_max = c->stack_max;	340	PL_stack_max = c->stack_max;
305	PL_tmps_stack = c->tmps_stack;	341	PL_tmps_stack = c->tmps_stack;
306	PL_tmps_floor = c->tmps_floor;	342	PL_tmps_floor = c->tmps_floor;
307	PL_tmps_ix = c->tmps_ix;	343	PL_tmps_ix = c->tmps_ix;
…		…
316	PL_savestack_ix = c->savestack_ix;	352	PL_savestack_ix = c->savestack_ix;
317	PL_savestack_max = c->savestack_max;	353	PL_savestack_max = c->savestack_max;
318	PL_retstack = c->retstack;	354	PL_retstack = c->retstack;
319	PL_retstack_ix = c->retstack_ix;	355	PL_retstack_ix = c->retstack_ix;
320	PL_retstack_max = c->retstack_max;	356	PL_retstack_max = c->retstack_max;
		357	PL_curpm = c->curpm;
321	PL_curcop = c->curcop;	358	PL_curcop = c->curcop;
322	PL_top_env = c->top_env;	359	PL_top_env = c->top_env;
323		360
324	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	361	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
325	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	362	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
334	{	371	{
335	AV padlist = (AV )POPs;	372	AV padlist = (AV )POPs;
336		373
337	if (padlist)	374	if (padlist)
338	{	375	{
339	put_padlist (cv); /* mark this padlist as available */	376	put_padlist (aTHX_ cv); /* mark this padlist as available */
340	CvPADLIST(cv) = padlist;	377	CvPADLIST(cv) = padlist;
341	#ifdef USE_THREADS
342	/CvOWNER(cv) = (struct perl_thread )POPs;*/
343	#endif
344	}	378	}
345		379
346	++CvDEPTH(cv);	380	++CvDEPTH(cv);
347	}	381	}
348		382
…		…
366		400
367	PUSHs (Nullsv);	401	PUSHs (Nullsv);
368	/* this loop was inspired by pp_caller */	402	/* this loop was inspired by pp_caller */
369	for (;;)	403	for (;;)
370	{	404	{
371	do	405	while (cxix >= 0)
372	{	406	{
373	PERL_CONTEXT *cx = &ccstk[cxix--];	407	PERL_CONTEXT *cx = &ccstk[cxix--];
374		408
375	if (CxTYPE(cx) == CXt_SUB)	409	if (CxTYPE(cx) == CXt_SUB)
376	{	410	{
377	CV *cv = cx->blk_sub.cv;	411	CV *cv = cx->blk_sub.cv;
378	if (CvDEPTH(cv))	412	if (CvDEPTH(cv))
379	{	413	{
380	#ifdef USE_THREADS
381	/XPUSHs ((SV )CvOWNER(cv));*/
382	/CvOWNER(cv) = 0;/
383	/error must unlock this cv etc.. etc.../
384	#endif
385	EXTEND (SP, CvDEPTH(cv)*2);	414	EXTEND (SP, CvDEPTH(cv)*2);
386		415
387	while (--CvDEPTH(cv))	416	while (--CvDEPTH(cv))
388	{	417	{
389	/* this tells the restore code to increment CvDEPTH */	418	/* this tells the restore code to increment CvDEPTH */
…		…
392	}	421	}
393		422
394	PUSHs ((SV *)CvPADLIST(cv));	423	PUSHs ((SV *)CvPADLIST(cv));
395	PUSHs ((SV *)cv);	424	PUSHs ((SV *)cv);
396		425
397	get_padlist (cv); /* this is a monster */	426	get_padlist (aTHX_ cv); /* this is a monster */
398	}	427	}
399	}	428	}
		429	#ifdef CXt_FORMAT
400	else if (CxTYPE(cx) == CXt_FORMAT)	430	else if (CxTYPE(cx) == CXt_FORMAT)
401	{	431	{
402	/* I never used formats, so how should I know how these are implemented? */	432	/* I never used formats, so how should I know how these are implemented? */
403	/* my bold guess is as a simple, plain sub... */	433	/* my bold guess is as a simple, plain sub... */
404	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	434	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
405	}	435	}
		436	#endif
406	}	437	}
407	while (cxix >= 0);
408		438
409	if (top_si->si_type == PERLSI_MAIN)	439	if (top_si->si_type == PERLSI_MAIN)
410	break;	440	break;
411		441
412	top_si = top_si->si_prev;	442	top_si = top_si->si_prev;
…		…
418	}	448	}
419		449
420	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	450	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
421	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	451	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
422	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	452	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
423
424	/* I have not the slightest idea of why av_reify is necessary */
425	/* but if it's missing the defav contents magically get replaced sometimes */
426	if (c->defav)
427	av_reify (c->defav);
428		453
429	c->dowarn = PL_dowarn;	454	c->dowarn = PL_dowarn;
430	c->in_eval = PL_in_eval;	455	c->in_eval = PL_in_eval;
431		456
432	c->curstackinfo = PL_curstackinfo;	457	c->curstackinfo = PL_curstackinfo;
433	c->curstack = PL_curstack;	458	c->curstack = PL_curstack;
434	c->mainstack = PL_mainstack;	459	c->mainstack = PL_mainstack;
435	c->stack_sp = PL_stack_sp;	460	c->stack_sp = PL_stack_sp;
436	c->op = PL_op;	461	c->op = PL_op;
437	c->curpad = PL_curpad;	462	c->curpad = PL_curpad;
		463	c->comppad = PL_comppad;
		464	c->compcv = PL_compcv;
438	c->stack_base = PL_stack_base;	465	c->stack_base = PL_stack_base;
439	c->stack_max = PL_stack_max;	466	c->stack_max = PL_stack_max;
440	c->tmps_stack = PL_tmps_stack;	467	c->tmps_stack = PL_tmps_stack;
441	c->tmps_floor = PL_tmps_floor;	468	c->tmps_floor = PL_tmps_floor;
442	c->tmps_ix = PL_tmps_ix;	469	c->tmps_ix = PL_tmps_ix;
…		…
451	c->savestack_ix = PL_savestack_ix;	478	c->savestack_ix = PL_savestack_ix;
452	c->savestack_max = PL_savestack_max;	479	c->savestack_max = PL_savestack_max;
453	c->retstack = PL_retstack;	480	c->retstack = PL_retstack;
454	c->retstack_ix = PL_retstack_ix;	481	c->retstack_ix = PL_retstack_ix;
455	c->retstack_max = PL_retstack_max;	482	c->retstack_max = PL_retstack_max;
		483	c->curpm = PL_curpm;
456	c->curcop = PL_curcop;	484	c->curcop = PL_curcop;
457	c->top_env = PL_top_env;	485	c->top_env = PL_top_env;
458	}	486	}
459		487
460	/*	488	/*
461	* allocate various perl stacks. This is an exact copy	489	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	490	* of perl.c:init_stacks, except that it uses less memory
463	* on the assumption that coroutines do not usually need	491	* on the (sometimes correct) assumption that coroutines do
464	* a lot of stackspace.	492	* not usually need a lot of stackspace.
465	*/	493	*/
466	STATIC void	494	STATIC void
467	coro_init_stacks (pTHX)	495	coro_init_stacks (pTHX)
468	{	496	{
		497	LOCK;
		498
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	499	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	500	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	501	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	502	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		503
…		…
482		512
483	New(54,PL_markstack,16,I32);	513	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	514	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	515	PL_markstack_max = PL_markstack + 16;
486		516
		517	#ifdef SET_MARK_OFFSET
487	SET_MARK_OFFSET;	518	SET_MARK_OFFSET;
		519	#endif
488		520
489	New(54,PL_scopestack,16,I32);	521	New(54,PL_scopestack,16,I32);
490	PL_scopestack_ix = 0;	522	PL_scopestack_ix = 0;
491	PL_scopestack_max = 16;	523	PL_scopestack_max = 16;
492		524
…		…
495	PL_savestack_max = 96;	527	PL_savestack_max = 96;
496		528
497	New(54,PL_retstack,8,OP*);	529	New(54,PL_retstack,8,OP*);
498	PL_retstack_ix = 0;	530	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	531	PL_retstack_max = 8;
		532
		533	UNLOCK;
500	}	534	}
501		535
502	/*	536	/*
503	* destroy the stacks, the callchain etc...	537	* destroy the stacks, the callchain etc...
504	* still there is a memleak of 128 bytes...
505	*/	538	*/
506	STATIC void	539	STATIC void
507	destroy_stacks(pTHX)	540	destroy_stacks(pTHX)
508	{	541	{
		542	if (!IN_DESTRUCT)
		543	{
509	/* is this ugly, I ask? */	544	/* is this ugly, I ask? */
510	while (PL_scopestack_ix)	545	LEAVE_SCOPE (0);
511	LEAVE;
512		546
513	/* sure it is, but more important: is it correct?? :/ */	547	/* sure it is, but more important: is it correct?? :/ */
514	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
515	FREETMPS;	548	FREETMPS;
		549
		550	/POPSTACK_TO (PL_mainstack);//D//use/
		551	}
516		552
517	while (PL_curstackinfo->si_next)	553	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	554	PL_curstackinfo = PL_curstackinfo->si_next;
519		555
520	while (PL_curstackinfo)	556	while (PL_curstackinfo)
521	{	557	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	558	PERL_SI *p = PL_curstackinfo->si_prev;
523		559
524	{	560	{ /D//remove/
525	dSP;	561	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	562	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */	563	PUTBACK; /* possibly superfluous */
528	}	564	}
529		565
530	dounwind(-1);	566	if (!IN_DESTRUCT)
531		567	{
		568	dounwind (-1);/D//remove/
532	SvREFCNT_dec(PL_curstackinfo->si_stack);	569	SvREFCNT_dec (PL_curstackinfo->si_stack);
		570	}
		571
533	Safefree(PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
534	Safefree(PL_curstackinfo);	573	Safefree (PL_curstackinfo);
535	PL_curstackinfo = p;	574	PL_curstackinfo = p;
536	}	575	}
537		576
538	Safefree(PL_tmps_stack);	577	Safefree (PL_tmps_stack);
539	Safefree(PL_markstack);	578	Safefree (PL_markstack);
540	Safefree(PL_scopestack);	579	Safefree (PL_scopestack);
541	Safefree(PL_savestack);	580	Safefree (PL_savestack);
542	Safefree(PL_retstack);	581	Safefree (PL_retstack);
543	}	582	}
544		583
545	static void	584	static void
546	allocate_stack (Coro__State ctx, int alloc)	585	allocate_stack (Coro__State ctx, int alloc)
547	{	586	{
…		…
550	New (0, stack, 1, coro_stack);	589	New (0, stack, 1, coro_stack);
551		590
552	stack->refcnt = 1;	591	stack->refcnt = 1;
553	stack->usecnt = 1;	592	stack->usecnt = 1;
554	stack->gencnt = ctx->gencnt = 0;	593	stack->gencnt = ctx->gencnt = 0;
		594
555	if (alloc)	595	if (alloc)
556	{	596	{
557	#ifdef HAVE_MMAP	597	#if HAVE_MMAP
558	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	598	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
559	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	599	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
560	if (stack->sptr == (void *)-1)	600	if (stack->sptr == (void *)-1)
561	#endif	601	#endif
562	{	602	{
563	/FIXME//D//* reasonable stack size! */	603	/FIXME//D//* reasonable stack size! */
564	stack->ssize = -4096 * sizeof (long);	604	stack->ssize = - (STACKSIZE * sizeof (long));
565	New (0, stack->sptr, 4096, long);	605	New (0, stack->sptr, STACKSIZE, long);
566	}	606	}
567	}	607	}
568	else	608	else
569	stack->sptr = 0;	609	stack->sptr = 0;
570		610
…		…
584	{	624	{
585	#ifdef HAVE_MMAP	625	#ifdef HAVE_MMAP
586	if (stack->ssize > 0 && stack->sptr)	626	if (stack->ssize > 0 && stack->sptr)
587	munmap (stack->sptr, stack->ssize);	627	munmap (stack->sptr, stack->ssize);
588	else	628	else
589	#else	629	#endif
590	Safefree (stack->sptr);	630	Safefree (stack->sptr);
591	#endif	631
592	Safefree (stack);	632	Safefree (stack);
593	}	633	}
594	else if (ctx->gencnt == stack->gencnt)	634	else if (ctx->gencnt == stack->gencnt)
595	--stack->usecnt;	635	--stack->usecnt;
596	}	636	}
…		…
600	setup_coro (void *arg)	640	setup_coro (void *arg)
601	{	641	{
602	/*	642	/*
603	* emulate part of the perl startup here.	643	* emulate part of the perl startup here.
604	*/	644	*/
		645	dTHX;
605	dSP;	646	dSP;
606	Coro__State ctx = (Coro__State)arg;	647	Coro__State ctx = (Coro__State)arg;
607	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	648	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
608		649
609	coro_init_stacks (aTHX);	650	coro_init_stacks (aTHX);
610	/PL_curcop = 0;/	651	/PL_curcop = 0;/
611	/PL_in_eval = PL_in_eval;/ /* inherit */	652	/PL_in_eval = PL_in_eval;/ /* inherit */
612	SvREFCNT_dec (GvAV (PL_defgv));	653	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args;	654	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
614		655
615	SPAGAIN;	656	SPAGAIN;
616		657
617	if (ctx->stack)	658	if (ctx->stack)
618	{	659	{
…		…
645	* that doesn't matter, though, since it is only	686	* that doesn't matter, though, since it is only
646	* pp_nextstate and we never return...	687	* pp_nextstate and we never return...
647	* ah yes, and I don't care anyways ;)	688	* ah yes, and I don't care anyways ;)
648	*/	689	*/
649	PUTBACK;	690	PUTBACK;
650	PL_op = pp_entersub();	691	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
651	SPAGAIN;	692	SPAGAIN;
652		693
653	ENTER; /* necessary e.g. for dounwind */	694	ENTER; /* necessary e.g. for dounwind */
654	}	695	}
655	}	696	}
…		…
658	continue_coro (void *arg)	699	continue_coro (void *arg)
659	{	700	{
660	/*	701	/*
661	* this is a _very_ stripped down perl interpreter ;)	702	* this is a _very_ stripped down perl interpreter ;)
662	*/	703	*/
		704	dTHX;
663	Coro__State ctx = (Coro__State)arg;	705	Coro__State ctx = (Coro__State)arg;
		706	JMPENV coro_start_env;
664		707
665	/FIXME//* must set up top_env here */	708	PL_top_env = &ctx->start_env;
		709
666	ctx->cursp = 0;	710	ctx->cursp = 0;
667	PL_op = PL_op->op_next;	711	PL_op = PL_op->op_next;
668	CALLRUNOPS(aTHX);	712	CALLRUNOPS(aTHX);
669		713
670	abort ();	714	abort ();
671	}	715	}
672		716
673	STATIC void	717	STATIC void
674	transfer(pTHX_ struct coro prev, struct coro next, int flags)	718	transfer (pTHX_ struct coro prev, struct coro next, int flags)
675	{	719	{
676	dSP;
677	dSTACKLEVEL;	720	dSTACKLEVEL;
678		721
679	if (prev != next)	722	if (prev != next)
680	{	723	{
681	if (next->mainstack)	724	if (next->mainstack)
682	{	725	{
		726	LOCK;
683	SAVE (prev, flags);	727	SAVE (prev, flags);
684	LOAD (next);	728	LOAD (next);
		729	UNLOCK;
685		730
686	/* mark this state as in-use */	731	/* mark this state as in-use */
687	next->mainstack = 0;	732	next->mainstack = 0;
688	next->tmps_ix = -2;	733	next->tmps_ix = -2;
689		734
…		…
708	continue_coro, (void *)next,	753	continue_coro, (void *)next,
709	next->stack->sptr, labs (next->stack->ssize));	754	next->stack->sptr, labs (next->stack->ssize));
710	}	755	}
711		756
712	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	757	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		758	prev->cursp = stacklevel;
		759	/* don't add any code here */
713	}	760	}
714		761	else
		762	next->cursp = stacklevel;
715	}	763	}
716	else if (next->tmps_ix == -2)	764	else if (next->tmps_ix == -2)
717	croak ("tried to transfer to running coroutine");	765	croak ("tried to transfer to running coroutine");
718	else	766	else
719	{	767	{
		768	LOCK;
720	SAVE (prev, -1); /* first get rid of the old state */	769	SAVE (prev, -1); /* first get rid of the old state */
		770	UNLOCK;
721		771
722	if (flags & TRANSFER_SAVE_CCTXT)	772	if (flags & TRANSFER_SAVE_CCTXT)
723	{	773	{
724	if (!prev->stack)	774	if (!prev->stack)
725	allocate_stack (prev, 0);	775	allocate_stack (prev, 0);
726		776
727	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	777	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
728	{	778	{
		779	PL_top_env = &next->start_env;
		780
729	setup_coro (next);	781	setup_coro (next);
		782	next->cursp = stacklevel;
730		783
731	prev->stack->refcnt++;	784	prev->stack->refcnt++;
732	prev->stack->usecnt++;	785	prev->stack->usecnt++;
733	next->stack = prev->stack;	786	next->stack = prev->stack;
734	next->gencnt = prev->gencnt;	787	next->gencnt = prev->gencnt;
735	}	788	}
736	else	789	else
737	{	790	{
		791	assert (!next->stack);
738	allocate_stack (next, 1);	792	allocate_stack (next, 1);
739	coro_create (&(next->stack->cctx),	793	coro_create (&(next->stack->cctx),
740	setup_coro, (void *)next,	794	setup_coro, (void *)next,
741	next->stack->sptr, labs (next->stack->ssize));	795	next->stack->sptr, labs (next->stack->ssize));
742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	796	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		797	prev->cursp = stacklevel;
		798	/* don't add any code here */
743	}	799	}
744	}	800	}
745	else	801	else
		802	{
746	setup_coro (next);	803	setup_coro (next);
		804	next->cursp = stacklevel;
		805	}
747	}	806	}
748	}	807	}
749		808
750	next->cursp = stacklevel;	809	LOCK;
		810	if (coro_mortal)
		811	{
		812	SvREFCNT_dec (coro_mortal);
		813	coro_mortal = 0;
		814	}
		815	UNLOCK;
		816	}
		817
		818	#define SV_CORO(sv,func) \
		819	do { \
		820	if (SvROK (sv)) \
		821	sv = SvRV (sv); \
		822	\
		823	if (SvTYPE (sv) == SVt_PVHV) \
		824	{ \
		825	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		826	\
		827	if (!he) \
		828	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		829	\
		830	(sv) = SvRV (HeVAL(he)); \
		831	} \
		832	\
		833	/* must also be changed inside Coro::Cont::yield */ \
		834	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		835	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		836	\
		837	} while(0)
		838
		839	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		840
		841	static void
		842	api_transfer(pTHX_ SV prev, SV next, int flags)
		843	{
		844	SV_CORO (prev, "Coro::transfer");
		845	SV_CORO (next, "Coro::transfer");
		846
		847	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		848	}
		849
		850	/ Coro ******************************************************************/
		851
		852	#define PRIO_MAX 3
		853	#define PRIO_HIGH 1
		854	#define PRIO_NORMAL 0
		855	#define PRIO_LOW -1
		856	#define PRIO_IDLE -3
		857	#define PRIO_MIN -4
		858
		859	/* for Coro.pm */
		860	static GV coro_current, coro_idle;
		861	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		862	static int coro_nready;
		863
		864	static void
		865	coro_enq (pTHX_ SV *sv)
		866	{
		867	if (SvTYPE (sv) == SVt_PVHV)
		868	{
		869	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		870	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		871
		872	prio = prio > PRIO_MAX ? PRIO_MAX
		873	: prio < PRIO_MIN ? PRIO_MIN
		874	: prio;
		875
		876	av_push (coro_ready [prio - PRIO_MIN], sv);
		877	coro_nready++;
		878
		879	return;
		880	}
		881
		882	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		883	}
		884
		885	static SV *
		886	coro_deq (pTHX_ int min_prio)
		887	{
		888	int prio = PRIO_MAX - PRIO_MIN;
		889
		890	min_prio -= PRIO_MIN;
		891	if (min_prio < 0)
		892	min_prio = 0;
		893
		894	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		895	if (av_len (coro_ready[prio]) >= 0)
		896	{
		897	coro_nready--;
		898	return av_shift (coro_ready[prio]);
		899	}
		900
		901	return 0;
		902	}
		903
		904	static void
		905	api_ready (SV *coro)
		906	{
		907	dTHX;
		908
		909	if (SvROK (coro))
		910	coro = SvRV (coro);
		911
		912	LOCK;
		913	coro_enq (aTHX_ SvREFCNT_inc (coro));
		914	UNLOCK;
		915	}
		916
		917	static void
		918	api_schedule (void)
		919	{
		920	dTHX;
		921
		922	SV prev, next;
		923
		924	LOCK;
		925
		926	prev = SvRV (GvSV (coro_current));
		927	next = coro_deq (aTHX_ PRIO_MIN);
		928
		929	if (!next)
		930	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		931
		932	/* free this only after the transfer */
		933	coro_mortal = prev;
		934	SV_CORO (prev, "Coro::schedule");
		935
		936	SvRV (GvSV (coro_current)) = next;
		937
		938	SV_CORO (next, "Coro::schedule");
		939
		940	UNLOCK;
		941
		942	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		943	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		944	}
		945
		946	static void
		947	api_cede (void)
		948	{
		949	dTHX;
		950
		951	LOCK;
		952	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		953	UNLOCK;
		954
		955	api_schedule ();
751	}	956	}
752		957
753	MODULE = Coro::State PACKAGE = Coro::State	958	MODULE = Coro::State PACKAGE = Coro::State
754		959
755	PROTOTYPES: ENABLE	960	PROTOTYPES: ENABLE
756		961
757	BOOT:	962	BOOT:
758	{ /* {} necessary for stoopid perl-5.6.x */	963	{ /* {} necessary for stoopid perl-5.6.x */
		964	#ifdef USE_ITHREADS
		965	MUTEX_INIT (&coro_mutex);
		966	#endif
		967
759	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	968	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
760	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	969	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
761	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
762		971
763	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
764	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
765	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	974	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
766	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	975	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
767		976
768	if (!padlist_cache)
769	padlist_cache = newHV ();
770
771	main_mainstack = PL_mainstack;	977	main_mainstack = PL_mainstack;
		978
		979	coroapi.ver = CORO_API_VERSION;
		980	coroapi.transfer = api_transfer;
772	}	981	}
773		982
774	Coro::State	983	Coro::State
775	_newprocess(args)	984	_newprocess(args)
776	SV * args	985	SV * args
…		…
779	Coro__State coro;	988	Coro__State coro;
780		989
781	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	990	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
782	croak ("Coro::State::_newprocess expects an arrayref");	991	croak ("Coro::State::_newprocess expects an arrayref");
783		992
784	New (0, coro, 1, struct coro);	993	Newz (0, coro, 1, struct coro);
785		994
786	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	995	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
787	coro->mainstack = 0; /* actual work is done inside transfer */	996	/coro->mainstack = 0; //actual work is done inside transfer /
788	coro->stack = 0;	997	/coro->stack = 0;/
		998
		999	/* same as JMPENV_BOOTSTRAP */
		1000	/* we might be able to recycle start_env, but safe is safe */
		1001	/Zero(&coro->start_env, 1, JMPENV);/
		1002	coro->start_env.je_ret = -1;
		1003	coro->start_env.je_mustcatch = TRUE;
789		1004
790	RETVAL = coro;	1005	RETVAL = coro;
791	OUTPUT:	1006	OUTPUT:
792	RETVAL	1007	RETVAL
793		1008
794	void	1009	void
795	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	1010	transfer(prev, next, flags)
796	Coro::State_or_hashref prev	1011	SV *prev
797	Coro::State_or_hashref next	1012	SV *next
798	int flags	1013	int flags
799	PROTOTYPE: @	1014	PROTOTYPE: @
800	CODE:	1015	CODE:
801	PUTBACK;	1016	PUTBACK;
		1017	SV_CORO (next, "Coro::transfer");
		1018	SV_CORO (prev, "Coro::transfer");
802	transfer (aTHX_ prev, next, flags);	1019	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
803	SPAGAIN;	1020	SPAGAIN;
804		1021
805	void	1022	void
806	DESTROY(coro)	1023	DESTROY(coro)
807	Coro::State coro	1024	Coro::State coro
…		…
809		1026
810	if (coro->mainstack && coro->mainstack != main_mainstack)	1027	if (coro->mainstack && coro->mainstack != main_mainstack)
811	{	1028	{
812	struct coro temp;	1029	struct coro temp;
813		1030
		1031	PUTBACK;
814	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1032	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
815	LOAD(aTHX_ coro);	1033	LOAD (aTHX_ coro);
		1034	SPAGAIN;
816		1035
817	destroy_stacks (aTHX);	1036	destroy_stacks (aTHX);
818		1037
819	LOAD((&temp)); /* this will get rid of defsv etc.. */	1038	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1039	SPAGAIN;
820		1040
821	coro->mainstack = 0;	1041	coro->mainstack = 0;
822	}	1042	}
823		1043
824	deallocate_stack (coro);	1044	deallocate_stack (coro);
825		1045	SvREFCNT_dec (coro->args);
826	Safefree (coro);	1046	Safefree (coro);
827
828	void
829	flush()
830	CODE:
831	#ifdef MAY_FLUSH
832	flush_padlist_cache ();
833	#endif
834		1047
835	void	1048	void
836	_exit(code)	1049	_exit(code)
837	int code	1050	int code
838	PROTOTYPE: $	1051	PROTOTYPE: $
839	CODE:	1052	CODE:
840	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
841	_exit (code);	1053	_exit (code);
842	#else
843	signal (SIGTERM, SIG_DFL);
844	raise (SIGTERM);
845	exit (code);
846	#endif
847		1054
848	MODULE = Coro::State PACKAGE = Coro::Cont	1055	MODULE = Coro::State PACKAGE = Coro::Cont
849		1056
850	# this is slightly dirty	1057	# this is slightly dirty (should expose a c-level api)
851		1058
852	void	1059	void
853	yield(...)	1060	yield(...)
854	PROTOTYPE: @	1061	PROTOTYPE: @
855	CODE:	1062	CODE:
856	static SV *returnstk;	1063	SV *yieldstack;
857	SV *sv;	1064	SV *sv;
858	AV *defav = GvAV (PL_defgv);	1065	AV *defav = GvAV (PL_defgv);
859	struct coro prev, next;	1066	struct coro prev, next;
860		1067
861	if (!returnstk)	1068	yieldstack = *hv_fetch (
862	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1069	(HV *)SvRV (GvSV (coro_current)),
		1070	"yieldstack", sizeof ("yieldstack") - 1,
		1071	0
		1072	);
863		1073
864	/* set up @_ -- ugly */	1074	/* set up @_ -- ugly */
865	av_clear (defav);	1075	av_clear (defav);
866	av_fill (defav, items - 1);	1076	av_fill (defav, items - 1);
867	while (items--)	1077	while (items--)
868	av_store (defav, items, SvREFCNT_inc (ST(items)));	1078	av_store (defav, items, SvREFCNT_inc (ST(items)));
869		1079
870	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
871	sv = av_pop ((AV *)SvRV (returnstk));	1080	sv = av_pop ((AV *)SvRV (yieldstack));
872	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1081	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
873	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1082	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
874	SvREFCNT_dec (sv);	1083	SvREFCNT_dec (sv);
875		1084
876	transfer(aTHX_ prev, next, 0);	1085	transfer (aTHX_ prev, next, 0);
877		1086
		1087	MODULE = Coro::State PACKAGE = Coro
		1088
		1089	# this is slightly dirty (should expose a c-level api)
		1090
		1091	BOOT:
		1092	{
		1093	int i;
		1094	HV *stash = gv_stashpv ("Coro", TRUE);
		1095
		1096	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1097	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1098	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1099	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1100	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1101	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1102
		1103	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1104	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1105
		1106	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1107	coro_ready[i] = newAV ();
		1108
		1109	{
		1110	SV *sv = perl_get_sv("Coro::API", 1);
		1111
		1112	coroapi.schedule = api_schedule;
		1113	coroapi.cede = api_cede;
		1114	coroapi.ready = api_ready;
		1115	coroapi.nready = &coro_nready;
		1116	coroapi.current = coro_current;
		1117
		1118	GCoroAPI = &coroapi;
		1119	sv_setiv(sv, (IV)&coroapi);
		1120	SvREADONLY_on(sv);
		1121	}
		1122	}
		1123
		1124	#if !PERL_MICRO
		1125
		1126	void
		1127	ready(self)
		1128	SV * self
		1129	PROTOTYPE: $
		1130	CODE:
		1131	api_ready (self);
		1132
		1133	#endif
		1134
		1135	int
		1136	nready(...)
		1137	PROTOTYPE:
		1138	CODE:
		1139	RETVAL = coro_nready;
		1140	OUTPUT:
		1141	RETVAL
		1142
		1143	void
		1144	schedule(...)
		1145	PROTOTYPE:
		1146	CODE:
		1147	api_schedule ();
		1148
		1149	void
		1150	cede(...)
		1151	PROTOTYPE:
		1152	CODE:
		1153	api_cede ();
		1154

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Comparing Coro/Coro/State.xs (file contents): Revision 1.20 by root, Fri Aug 3 12:51:56 2001 UTC vs. Revision 1.67 by root, Mon Dec 12 20:07:44 2005 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.20 by root, Fri Aug 3 12:51:56 2001 UTC vs.
Revision 1.67 by root, Mon Dec 12 20:07:44 2005 UTC