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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.17 by root, Wed Jul 25 14:01:46 2001 UTC vs.
Revision 1.76 by root, Thu Oct 26 08:45:56 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>
6		33
7	#ifdef HAVE_MMAP	34	#ifdef HAVE_MMAP
8	# include <unistd.h>	35	# include <unistd.h>
9	# include <sys/mman.h>	36	# include <sys/mman.h>
10	# ifndef MAP_ANON
11	# ifdef MAP_ANONYMOUS	37	# ifndef MAP_ANONYMOUS
12	# define MAP_ANON MAP_ANONYMOUS	38	# ifdef MAP_ANON
		39	# define MAP_ANONYMOUS MAP_ANON
13	# else	40	# else
14	# undef HAVE_MMAP	41	# undef HAVE_MMAP
15	# endif	42	# endif
16	# endif	43	# endif
17	#endif	44	#endif
18		45
19	#define MAY_FLUSH /* increases codesize */
20
21	/* perl-related */
22	#define TRANSFER_SAVE_DEFAV 0x00000001
23	#define TRANSFER_SAVE_DEFSV 0x00000002
24	#define TRANSFER_SAVE_ERRSV 0x00000004
25	/* c-related */
26	#define TRANSFER_SAVE_CCTXT 0x00000008
27	#ifdef CORO_LAZY_STACK
28	# define TRANSFER_LAZY_STACK 0x00000010
29	#else
30	# define TRANSFER_LAZY_STACK 0x00000000
31	#endif
32
33	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
34	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
35
36	#define SUB_INIT "Coro::State::initialize"	46	#define SUB_INIT "Coro::State::initialize"
37	#define UCORO_STATE "_coro_state"	47	#define UCORO_STATE "_coro_state"
38		48
39	/* The next macro should delcare a variable stacklevel that contains and approximation	49	/* The next macro should declare a variable stacklevel that contains and approximation
40	* to the current C stack pointer. It's property is that it changes with each call	50	* to the current C stack pointer. Its property is that it changes with each call
41	* and should be unique. */	51	* and should be unique. */
42	#define dSTACKLEVEL void *stacklevel = &stacklevel	52	#define dSTACKLEVEL void *stacklevel = &stacklevel
43		53
		54	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		55
44	#define labs(l) ((l) >= 0 ? (l) : -(l))	56	#define labs(l) ((l) >= 0 ? (l) : -(l))
		57
		58	#include "CoroAPI.h"
		59
		60	#ifdef USE_ITHREADS
		61	static perl_mutex coro_mutex;
		62	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		63	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		64	#else
		65	# define LOCK (void)0
		66	# define UNLOCK (void)0
		67	#endif
		68
		69	static struct CoroAPI coroapi;
		70	static AV main_mainstack; / used to differentiate between $main and others */
		71	static HV *coro_state_stash;
		72	static SV *ucoro_state_sv;
		73	static U32 ucoro_state_hash;
		74	static SV coro_mortal; / will be freed after next transfer */
45		75
46	/* this is actually not only the c stack but also c registers etc... */	76	/* this is actually not only the c stack but also c registers etc... */
47	typedef struct {	77	typedef struct {
48	int refcnt; /* pointer reference counter */	78	int refcnt; /* pointer reference counter */
49	int usecnt; /* shared by how many coroutines */	79	int usecnt; /* shared by how many coroutines */
53		83
54	void *sptr;	84	void *sptr;
55	long ssize; /* positive == mmap, otherwise malloc */	85	long ssize; /* positive == mmap, otherwise malloc */
56	} coro_stack;	86	} coro_stack;
57		87
58	static coro_stack main_stack = { 1, 0, 0 };
59
60	struct coro {	88	struct coro {
		89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		90	JMPENV start_env;
		91
61	/* the optional C context */	92	/* the optional C context */
62	coro_stack *stack;	93	coro_stack *stack;
63	void *cursp;	94	void *cursp;
64	int gencnt;	95	int gencnt;
65		96
…		…
68	SV *defsv;	99	SV *defsv;
69	SV *errsv;	100	SV *errsv;
70		101
71	/* saved global state not related to stacks */	102	/* saved global state not related to stacks */
72	U8 dowarn;	103	U8 dowarn;
		104	I32 in_eval;
73		105
74	/* the stacks and related info (callchain etc..) */	106	/* the stacks and related info (callchain etc..) */
75	PERL_SI *curstackinfo;	107	PERL_SI *curstackinfo;
76	AV *curstack;	108	AV *curstack;
77	AV *mainstack;	109	AV *mainstack;
78	SV **stack_sp;	110	SV **stack_sp;
79	OP *op;	111	OP *op;
80	SV **curpad;	112	SV **curpad;
		113	AV *comppad;
		114	CV *compcv;
81	SV **stack_base;	115	SV **stack_base;
82	SV **stack_max;	116	SV **stack_max;
83	SV **tmps_stack;	117	SV **tmps_stack;
84	I32 tmps_floor;	118	I32 tmps_floor;
85	I32 tmps_ix;	119	I32 tmps_ix;
…		…
94	I32 savestack_ix;	128	I32 savestack_ix;
95	I32 savestack_max;	129	I32 savestack_max;
96	OP **retstack;	130	OP **retstack;
97	I32 retstack_ix;	131	I32 retstack_ix;
98	I32 retstack_max;	132	I32 retstack_max;
		133	PMOP *curpm;
99	COP *curcop;	134	COP *curcop;
100	JMPENV start_env;
101	JMPENV *top_env;	135	JMPENV *top_env;
102		136
103	/* data associated with this coroutine (initial args) */	137	/* data associated with this coroutine (initial args) */
104	AV *args;	138	AV *args;
105	};	139	};
106		140
107	typedef struct coro *Coro__State;	141	typedef struct coro *Coro__State;
108	typedef struct coro *Coro__State_or_hashref;	142	typedef struct coro *Coro__State_or_hashref;
109		143
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 */	144	/* mostly copied from op.c:cv_clone2 */
117	STATIC AV *	145	STATIC AV *
118	clone_padlist (AV *protopadlist)	146	clone_padlist (pTHX_ AV *protopadlist)
119	{	147	{
120	AV *av;	148	AV *av;
121	I32 ix;	149	I32 ix;
122	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	150	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
123	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	151	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
142	av_store (newpadlist, 1, (SV *) newpad);	170	av_store (newpadlist, 1, (SV *) newpad);
143		171
144	av = newAV (); /* will be @_ */	172	av = newAV (); /* will be @_ */
145	av_extend (av, 0);	173	av_extend (av, 0);
146	av_store (newpad, 0, (SV *) av);	174	av_store (newpad, 0, (SV *) av);
147	AvFLAGS (av) = AVf_REIFY;	175	AvREIFY_on (av);
148		176
149	for (ix = fpad; ix > 0; ix--)	177	for (ix = fpad; ix > 0; ix--)
150	{	178	{
151	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	179	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		180
152	if (namesv && namesv != &PL_sv_undef)	181	if (namesv && namesv != &PL_sv_undef)
153	{	182	{
154	char name = SvPVX (namesv); / XXX */	183	char name = SvPVX (namesv); / XXX */
		184
155	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	185	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
156	{ /* lexical from outside? */	186	{ /* lexical from outside? */
157	npad[ix] = SvREFCNT_inc (ppad[ix]);	187	npad[ix] = SvREFCNT_inc (ppad[ix]);
158	}	188	}
159	else	189	else
…		…
165	sv = (SV *) newAV ();	195	sv = (SV *) newAV ();
166	else if (*name == '%')	196	else if (*name == '%')
167	sv = (SV *) newHV ();	197	sv = (SV *) newHV ();
168	else	198	else
169	sv = NEWSV (0, 0);	199	sv = NEWSV (0, 0);
		200
		201	#ifdef SvPADBUSY
170	if (!SvPADBUSY (sv))	202	if (!SvPADBUSY (sv))
		203	#endif
171	SvPADMY_on (sv);	204	SvPADMY_on (sv);
		205
172	npad[ix] = sv;	206	npad[ix] = sv;
173	}	207	}
174	}	208	}
175	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	209	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
176	{	210	{
…		…
205	#endif	239	#endif
206		240
207	return newpadlist;	241	return newpadlist;
208	}	242	}
209		243
210	#ifdef MAY_FLUSH	244	STATIC void
211	STATIC AV *
212	free_padlist (AV *padlist)	245	free_padlist (pTHX_ AV *padlist)
213	{	246	{
214	/* may be during global destruction */	247	/* may be during global destruction */
215	if (SvREFCNT(padlist))	248	if (SvREFCNT (padlist))
216	{	249	{
217	I32 i = AvFILLp(padlist);	250	I32 i = AvFILLp (padlist);
218	while (i >= 0)	251	while (i >= 0)
219	{	252	{
220	SV **svp = av_fetch(padlist, i--, FALSE);	253	SV **svp = av_fetch (padlist, i--, FALSE);
221	SV sv = svp ? svp : Nullsv;
222	if (sv)	254	if (svp)
		255	{
		256	SV *sv;
		257	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
223	SvREFCNT_dec(sv);	258	SvREFCNT_dec (sv);
		259
		260	SvREFCNT_dec (*svp);
		261	}
224	}	262	}
225		263
226	SvREFCNT_dec((SV*)padlist);	264	SvREFCNT_dec ((SV*)padlist);
227	}	265	}
228	}	266	}
229	#endif	267
		268	STATIC int
		269	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		270	{
		271	AV *padlist;
		272	AV av = (AV )mg->mg_obj;
		273
		274	/* casting is fun. */
		275	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		276	free_padlist (aTHX_ padlist);
		277
		278	SvREFCNT_dec (av);
		279
		280	return 0;
		281	}
		282
		283	#define PERL_MAGIC_coro PERL_MAGIC_ext
		284
		285	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
230		286
231	/* the next two functions merely cache the padlists */	287	/* the next two functions merely cache the padlists */
232	STATIC void	288	STATIC void
233	get_padlist (CV *cv)	289	get_padlist (pTHX_ CV *cv)
234	{	290	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	291	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
236		292
237	if (he && AvFILLp ((AV )he) >= 0)	293	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
238	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	294	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
239	else	295	else
240	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	296	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
241	}	297	}
242		298
243	STATIC void	299	STATIC void
244	put_padlist (CV *cv)	300	put_padlist (pTHX_ CV *cv)
245	{	301	{
246	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	302	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
247		303
248	if (SvTYPE (*he) != SVt_PVAV)	304	if (!mg)
249	{	305	{
250	SvREFCNT_dec (*he);	306	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		307	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		308	mg->mg_virtual = &vtbl_coro;
251	he = (SV )newAV ();	309	mg->mg_obj = (SV *)newAV ();
252	}	310	}
253		311
254	av_push ((AV )he, (SV *)CvPADLIST (cv));	312	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
255	}	313	}
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		314
283	#define SB do {	315	#define SB do {
284	#define SE } while (0)	316	#define SE } while (0)
285		317
286	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	318	#define LOAD(state) load_state(aTHX_ (state));
287	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	319	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
288		320
289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	321	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
290		322
291	static void	323	static void
292	load_state(pTHX_ Coro__State c)	324	load_state(pTHX_ Coro__State c)
293	{	325	{
294	PL_dowarn = c->dowarn;	326	PL_dowarn = c->dowarn;
		327	PL_in_eval = c->in_eval;
295		328
296	PL_curstackinfo = c->curstackinfo;	329	PL_curstackinfo = c->curstackinfo;
297	PL_curstack = c->curstack;	330	PL_curstack = c->curstack;
298	PL_mainstack = c->mainstack;	331	PL_mainstack = c->mainstack;
299	PL_stack_sp = c->stack_sp;	332	PL_stack_sp = c->stack_sp;
300	PL_op = c->op;	333	PL_op = c->op;
301	PL_curpad = c->curpad;	334	PL_curpad = c->curpad;
		335	PL_comppad = c->comppad;
		336	PL_compcv = c->compcv;
302	PL_stack_base = c->stack_base;	337	PL_stack_base = c->stack_base;
303	PL_stack_max = c->stack_max;	338	PL_stack_max = c->stack_max;
304	PL_tmps_stack = c->tmps_stack;	339	PL_tmps_stack = c->tmps_stack;
305	PL_tmps_floor = c->tmps_floor;	340	PL_tmps_floor = c->tmps_floor;
306	PL_tmps_ix = c->tmps_ix;	341	PL_tmps_ix = c->tmps_ix;
…		…
312	PL_scopestack_ix = c->scopestack_ix;	347	PL_scopestack_ix = c->scopestack_ix;
313	PL_scopestack_max = c->scopestack_max;	348	PL_scopestack_max = c->scopestack_max;
314	PL_savestack = c->savestack;	349	PL_savestack = c->savestack;
315	PL_savestack_ix = c->savestack_ix;	350	PL_savestack_ix = c->savestack_ix;
316	PL_savestack_max = c->savestack_max;	351	PL_savestack_max = c->savestack_max;
		352	#if PERL_VERSION < 9
317	PL_retstack = c->retstack;	353	PL_retstack = c->retstack;
318	PL_retstack_ix = c->retstack_ix;	354	PL_retstack_ix = c->retstack_ix;
319	PL_retstack_max = c->retstack_max;	355	PL_retstack_max = c->retstack_max;
		356	#endif
		357	PL_curpm = c->curpm;
320	PL_curcop = c->curcop;	358	PL_curcop = c->curcop;
321	PL_start_env = c->start_env;
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);
326	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	363	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
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;
…		…
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		453
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
429	c->dowarn = PL_dowarn;	454	c->dowarn = PL_dowarn;
		455	c->in_eval = PL_in_eval;
430		456
431	c->curstackinfo = PL_curstackinfo;	457	c->curstackinfo = PL_curstackinfo;
432	c->curstack = PL_curstack;	458	c->curstack = PL_curstack;
433	c->mainstack = PL_mainstack;	459	c->mainstack = PL_mainstack;
434	c->stack_sp = PL_stack_sp;	460	c->stack_sp = PL_stack_sp;
435	c->op = PL_op;	461	c->op = PL_op;
436	c->curpad = PL_curpad;	462	c->curpad = PL_curpad;
		463	c->comppad = PL_comppad;
		464	c->compcv = PL_compcv;
437	c->stack_base = PL_stack_base;	465	c->stack_base = PL_stack_base;
438	c->stack_max = PL_stack_max;	466	c->stack_max = PL_stack_max;
439	c->tmps_stack = PL_tmps_stack;	467	c->tmps_stack = PL_tmps_stack;
440	c->tmps_floor = PL_tmps_floor;	468	c->tmps_floor = PL_tmps_floor;
441	c->tmps_ix = PL_tmps_ix;	469	c->tmps_ix = PL_tmps_ix;
…		…
447	c->scopestack_ix = PL_scopestack_ix;	475	c->scopestack_ix = PL_scopestack_ix;
448	c->scopestack_max = PL_scopestack_max;	476	c->scopestack_max = PL_scopestack_max;
449	c->savestack = PL_savestack;	477	c->savestack = PL_savestack;
450	c->savestack_ix = PL_savestack_ix;	478	c->savestack_ix = PL_savestack_ix;
451	c->savestack_max = PL_savestack_max;	479	c->savestack_max = PL_savestack_max;
		480	#if PERL_VERSION < 9
452	c->retstack = PL_retstack;	481	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;	482	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;	483	c->retstack_max = PL_retstack_max;
		484	#endif
		485	c->curpm = PL_curpm;
455	c->curcop = PL_curcop;	486	c->curcop = PL_curcop;
456	c->start_env = PL_start_env;
457	c->top_env = PL_top_env;	487	c->top_env = PL_top_env;
458	}	488	}
459		489
460	/*	490	/*
461	* allocate various perl stacks. This is an exact copy	491	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	492	* of perl.c:init_stacks, except that it uses less memory
463	* on the assumption that coroutines do not usually need	493	* on the (sometimes correct) assumption that coroutines do
464	* a lot of stackspace.	494	* not usually need a lot of stackspace.
465	*/	495	*/
466	STATIC void	496	STATIC void
467	coro_init_stacks (pTHX)	497	coro_init_stacks (pTHX)
468	{	498	{
		499	LOCK;
		500
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	501	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		505
…		…
482		514
483	New(54,PL_markstack,16,I32);	515	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	517	PL_markstack_max = PL_markstack + 16;
486		518
		519	#ifdef SET_MARK_OFFSET
487	SET_MARK_OFFSET;	520	SET_MARK_OFFSET;
		521	#endif
488		522
489	New(54,PL_scopestack,16,I32);	523	New(54,PL_scopestack,16,I32);
490	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
491	PL_scopestack_max = 16;	525	PL_scopestack_max = 16;
492		526
493	New(54,PL_savestack,96,ANY);	527	New(54,PL_savestack,96,ANY);
494	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
495	PL_savestack_max = 96;	529	PL_savestack_max = 96;
496		530
		531	#if PERL_VERSION < 9
497	New(54,PL_retstack,8,OP*);	532	New(54,PL_retstack,8,OP*);
498	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	534	PL_retstack_max = 8;
		535	#endif
		536
		537	UNLOCK;
500	}	538	}
501		539
502	/*	540	/*
503	* destroy the stacks, the callchain etc...	541	* destroy the stacks, the callchain etc...
504	* still there is a memleak of 128 bytes...
505	*/	542	*/
506	STATIC void	543	STATIC void
507	destroy_stacks(pTHX)	544	destroy_stacks(pTHX)
508	{	545	{
		546	if (!IN_DESTRUCT)
		547	{
509	/* is this ugly, I ask? */	548	/* is this ugly, I ask? */
510	while (PL_scopestack_ix)	549	LEAVE_SCOPE (0);
511	LEAVE;
512		550
513	/* sure it is, but more important: is it correct?? :/ */	551	/* 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;	552	FREETMPS;
		553
		554	/POPSTACK_TO (PL_mainstack);//D//use/
		555	}
516		556
517	while (PL_curstackinfo->si_next)	557	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	558	PL_curstackinfo = PL_curstackinfo->si_next;
519		559
520	while (PL_curstackinfo)	560	while (PL_curstackinfo)
521	{	561	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	562	PERL_SI *p = PL_curstackinfo->si_prev;
523		563
524	{	564	{ /D//remove/
525	dSP;	565	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	566	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */	567	PUTBACK; /* possibly superfluous */
528	}	568	}
529		569
530	dounwind(-1);	570	if (!IN_DESTRUCT)
531		571	{
		572	dounwind (-1);/D//remove/
532	SvREFCNT_dec(PL_curstackinfo->si_stack);	573	SvREFCNT_dec (PL_curstackinfo->si_stack);
		574	}
		575
533	Safefree(PL_curstackinfo->si_cxstack);	576	Safefree (PL_curstackinfo->si_cxstack);
534	Safefree(PL_curstackinfo);	577	Safefree (PL_curstackinfo);
535	PL_curstackinfo = p;	578	PL_curstackinfo = p;
536	}	579	}
537		580
538	Safefree(PL_tmps_stack);	581	Safefree (PL_tmps_stack);
539	Safefree(PL_markstack);	582	Safefree (PL_markstack);
540	Safefree(PL_scopestack);	583	Safefree (PL_scopestack);
541	Safefree(PL_savestack);	584	Safefree (PL_savestack);
		585	#if PERL_VERSION < 9
542	Safefree(PL_retstack);	586	Safefree (PL_retstack);
		587	#endif
543	}	588	}
544		589
545	static void	590	static void
546	allocate_stack (Coro__State ctx, int alloc)	591	allocate_stack (Coro__State ctx, int alloc)
547	{	592	{
…		…
550	New (0, stack, 1, coro_stack);	595	New (0, stack, 1, coro_stack);
551		596
552	stack->refcnt = 1;	597	stack->refcnt = 1;
553	stack->usecnt = 1;	598	stack->usecnt = 1;
554	stack->gencnt = ctx->gencnt = 0;	599	stack->gencnt = ctx->gencnt = 0;
		600
555	if (alloc)	601	if (alloc)
556	{	602	{
557	#ifdef HAVE_MMAP	603	#if HAVE_MMAP
558	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	604	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);	605	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
560	if (stack->sptr == (void *)-1)	606	if (stack->sptr == (void *)-1)
561	#endif	607	#endif
562	{	608	{
563	/FIXME//D//* reasonable stack size! */
564	stack->ssize = -4096 * sizeof (long);	609	stack->ssize = - (STACKSIZE * (long)sizeof (long));
565	New (0, stack->sptr, 4096, long);	610	New (0, stack->sptr, STACKSIZE, long);
566	}	611	}
567	}	612	}
568	else	613	else
569	stack->sptr = 0;	614	stack->sptr = 0;
570		615
…		…
584	{	629	{
585	#ifdef HAVE_MMAP	630	#ifdef HAVE_MMAP
586	if (stack->ssize > 0 && stack->sptr)	631	if (stack->ssize > 0 && stack->sptr)
587	munmap (stack->sptr, stack->ssize);	632	munmap (stack->sptr, stack->ssize);
588	else	633	else
589	#else	634	#endif
590	Safefree (stack->sptr);	635	Safefree (stack->sptr);
591	#endif	636
592	Safefree (stack);	637	Safefree (stack);
593	}	638	}
594	else if (ctx->gencnt == stack->gencnt)	639	else if (ctx->gencnt == stack->gencnt)
595	--stack->usecnt;	640	--stack->usecnt;
596	}	641	}
…		…
600	setup_coro (void *arg)	645	setup_coro (void *arg)
601	{	646	{
602	/*	647	/*
603	* emulate part of the perl startup here.	648	* emulate part of the perl startup here.
604	*/	649	*/
		650	dTHX;
605	dSP;	651	dSP;
606	Coro__State ctx = (Coro__State)arg;	652	Coro__State ctx = (Coro__State)arg;
607	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	653	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
608		654
609	coro_init_stacks (aTHX);	655	coro_init_stacks (aTHX);
610	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
611	SPAGAIN;	661	SPAGAIN;
612
613	/PL_curcop = 0;/
614	SvREFCNT_dec (GvAV (PL_defgv));
615	GvAV (PL_defgv) = ctx->args;
616		662
617	if (ctx->stack)	663	if (ctx->stack)
618	{	664	{
619	ctx->cursp = 0;	665	ctx->cursp = 0;
620		666
621	PUSHMARK(SP);	667	PUSHMARK(SP);
622	PUTBACK;	668	PUTBACK;
623	(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
624	croak ("FATAL: CCTXT coroutine returned!");	674	croak ("FATAL: CCTXT coroutine returned!");
625	}	675	}
626	else	676	else
627	{	677	{
628	UNOP myop;	678	UNOP myop;
629		679
…		…
641	* that doesn't matter, though, since it is only	691	* that doesn't matter, though, since it is only
642	* pp_nextstate and we never return...	692	* pp_nextstate and we never return...
643	* ah yes, and I don't care anyways ;)	693	* ah yes, and I don't care anyways ;)
644	*/	694	*/
645	PUTBACK;	695	PUTBACK;
646	PL_op = pp_entersub();	696	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
647	SPAGAIN;	697	SPAGAIN;
648		698
649	ENTER; /* necessary e.g. for dounwind */	699	ENTER; /* necessary e.g. for dounwind */
650	}	700	}
651	}	701	}
…		…
654	continue_coro (void *arg)	704	continue_coro (void *arg)
655	{	705	{
656	/*	706	/*
657	* this is a _very_ stripped down perl interpreter ;)	707	* this is a _very_ stripped down perl interpreter ;)
658	*/	708	*/
		709	dTHX;
659	Coro__State ctx = (Coro__State)arg;	710	Coro__State ctx = (Coro__State)arg;
		711
		712	PL_top_env = &ctx->start_env;
660		713
661	ctx->cursp = 0;	714	ctx->cursp = 0;
662	PL_op = PL_op->op_next;	715	PL_op = PL_op->op_next;
663	CALLRUNOPS(aTHX);	716	CALLRUNOPS(aTHX);
664	/NORETURN/	717
665	abort ();	718	abort ();
666	}	719	}
667		720
668	STATIC void	721	STATIC void
669	transfer(pTHX_ struct coro prev, struct coro next, int flags)	722	transfer (pTHX_ struct coro prev, struct coro next, int flags)
670	{	723	{
671	dSP;
672	dSTACKLEVEL;	724	dSTACKLEVEL;
673		725
674	if (prev != next)	726	if (prev != next)
675	{	727	{
676	if (next->mainstack)	728	if (next->mainstack)
677	{	729	{
		730	LOCK;
678	SAVE (prev, flags);	731	SAVE (prev, flags);
679	LOAD (next);	732	LOAD (next);
		733	UNLOCK;
680		734
681	/* mark this state as in-use */	735	/* mark this state as in-use */
682	next->mainstack = 0;	736	next->mainstack = 0;
683	next->tmps_ix = -2;	737	next->tmps_ix = -2;
684		738
…		…
703	continue_coro, (void *)next,	757	continue_coro, (void *)next,
704	next->stack->sptr, labs (next->stack->ssize));	758	next->stack->sptr, labs (next->stack->ssize));
705	}	759	}
706		760
707	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	761	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		762	prev->cursp = stacklevel;
		763	/* don't add any code here */
708	}	764	}
709		765	else
		766	next->cursp = stacklevel;
710	}	767	}
711	else if (next->tmps_ix == -2)	768	else if (next->tmps_ix == -2)
712	croak ("tried to transfer to running coroutine");	769	croak ("tried to transfer to running coroutine");
713	else	770	else
714	{	771	{
		772	LOCK;
715	SAVE (prev, -1); /* first get rid of the old state */	773	SAVE (prev, -1); /* first get rid of the old state */
		774	UNLOCK;
716		775
717	if (flags & TRANSFER_SAVE_CCTXT)	776	if (flags & TRANSFER_SAVE_CCTXT)
718	{	777	{
719	if (!prev->stack)	778	if (!prev->stack)
720	allocate_stack (prev, 0);	779	allocate_stack (prev, 0);
721		780
722	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	781	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
723	{	782	{
		783	PL_top_env = &next->start_env;
		784
724	setup_coro (next);	785	setup_coro (next);
		786	next->cursp = stacklevel;
725		787
726	prev->stack->refcnt++;	788	prev->stack->refcnt++;
727	prev->stack->usecnt++;	789	prev->stack->usecnt++;
728	next->stack = prev->stack;	790	next->stack = prev->stack;
729	next->gencnt = prev->gencnt;	791	next->gencnt = prev->gencnt;
730	}	792	}
731	else	793	else
732	{	794	{
		795	assert (!next->stack);
733	allocate_stack (next, 1);	796	allocate_stack (next, 1);
734	coro_create (&(next->stack->cctx),	797	coro_create (&(next->stack->cctx),
735	setup_coro, (void *)next,	798	setup_coro, (void *)next,
736	next->stack->sptr, labs (next->stack->ssize));	799	next->stack->sptr, labs (next->stack->ssize));
737	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	800	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		801	prev->cursp = stacklevel;
		802	/* don't add any code here */
738	}	803	}
739	}	804	}
740	else	805	else
		806	{
741	setup_coro (next);	807	setup_coro (next);
		808	next->cursp = stacklevel;
		809	}
742	}	810	}
743	}	811	}
744		812
745	next->cursp = stacklevel;	813	LOCK;
		814	if (coro_mortal)
		815	{
		816	SvREFCNT_dec (coro_mortal);
		817	coro_mortal = 0;
		818	}
		819	UNLOCK;
		820	}
		821
		822	#define SV_CORO(sv,func) \
		823	do { \
		824	if (SvROK (sv)) \
		825	sv = SvRV (sv); \
		826	\
		827	if (SvTYPE (sv) == SVt_PVHV) \
		828	{ \
		829	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		830	\
		831	if (!he) \
		832	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		833	\
		834	(sv) = SvRV (HeVAL(he)); \
		835	} \
		836	\
		837	/* must also be changed inside Coro::Cont::yield */ \
		838	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		839	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		840	\
		841	} while(0)
		842
		843	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
		844
		845	static void
		846	api_transfer(pTHX_ SV prev, SV next, int flags)
		847	{
		848	SV_CORO (prev, "Coro::transfer");
		849	SV_CORO (next, "Coro::transfer");
		850
		851	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		852	}
		853
		854	/ Coro ******************************************************************/
		855
		856	#define PRIO_MAX 3
		857	#define PRIO_HIGH 1
		858	#define PRIO_NORMAL 0
		859	#define PRIO_LOW -1
		860	#define PRIO_IDLE -3
		861	#define PRIO_MIN -4
		862
		863	/* for Coro.pm */
		864	static GV coro_current, coro_idle;
		865	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		866	static int coro_nready;
		867
		868	static void
		869	coro_enq (pTHX_ SV *sv)
		870	{
		871	SV **xprio;
		872	int prio;
		873
		874	if (SvTYPE (sv) != SVt_PVHV)
		875	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		876
		877	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
		878	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		879
		880	prio = prio > PRIO_MAX ? PRIO_MAX
		881	: prio < PRIO_MIN ? PRIO_MIN
		882	: prio;
		883
		884	av_push (coro_ready [prio - PRIO_MIN], sv);
		885	coro_nready++;
		886	}
		887
		888	static SV *
		889	coro_deq (pTHX_ int min_prio)
		890	{
		891	int prio = PRIO_MAX - PRIO_MIN;
		892
		893	min_prio -= PRIO_MIN;
		894	if (min_prio < 0)
		895	min_prio = 0;
		896
		897	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		898	if (av_len (coro_ready[prio]) >= 0)
		899	{
		900	coro_nready--;
		901	return av_shift (coro_ready[prio]);
		902	}
		903
		904	return 0;
		905	}
		906
		907	static void
		908	api_ready (SV *coro)
		909	{
		910	dTHX;
		911
		912	if (SvROK (coro))
		913	coro = SvRV (coro);
		914
		915	LOCK;
		916	coro_enq (aTHX_ SvREFCNT_inc (coro));
		917	UNLOCK;
		918	}
		919
		920	static void
		921	api_schedule (void)
		922	{
		923	dTHX;
		924
		925	SV prev, next;
		926
		927	LOCK;
		928
		929	prev = SvRV (GvSV (coro_current));
		930	next = coro_deq (aTHX_ PRIO_MIN);
		931
		932	if (!next)
		933	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		934
		935	/* free this only after the transfer */
		936	coro_mortal = prev;
		937	SV_CORO (prev, "Coro::schedule");
		938
		939	SvRV (GvSV (coro_current)) = next;
		940
		941	SV_CORO (next, "Coro::schedule");
		942
		943	UNLOCK;
		944
		945	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		946	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		947	}
		948
		949	static void
		950	api_cede (void)
		951	{
		952	dTHX;
		953
		954	LOCK;
		955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		956	UNLOCK;
		957
		958	api_schedule ();
746	}	959	}
747		960
748	MODULE = Coro::State PACKAGE = Coro::State	961	MODULE = Coro::State PACKAGE = Coro::State
749		962
750	PROTOTYPES: ENABLE	963	PROTOTYPES: ENABLE
751		964
752	BOOT:	965	BOOT:
753	{ /* {} necessary for stoopid perl-5.6.x */	966	{ /* {} necessary for stoopid perl-5.6.x */
		967	#ifdef USE_ITHREADS
		968	MUTEX_INIT (&coro_mutex);
		969	#endif
		970
754	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	971	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
755	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	972	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
756	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	973	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
757		974
758	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	975	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
759	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	976	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
760	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	977	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
761	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	978	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
762		979
763	if (!padlist_cache)
764	padlist_cache = newHV ();
765
766	main_mainstack = PL_mainstack;	980	main_mainstack = PL_mainstack;
		981
		982	coroapi.ver = CORO_API_VERSION;
		983	coroapi.transfer = api_transfer;
767	}	984	}
768		985
769	Coro::State	986	Coro::State
770	_newprocess(args)	987	_newprocess(args)
771	SV * args	988	SV * args
…		…
774	Coro__State coro;	991	Coro__State coro;
775		992
776	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	993	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
777	croak ("Coro::State::_newprocess expects an arrayref");	994	croak ("Coro::State::_newprocess expects an arrayref");
778		995
779	New (0, coro, 1, struct coro);	996	Newz (0, coro, 1, struct coro);
780		997
781	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	998	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
782	coro->mainstack = 0; /* actual work is done inside transfer */	999	/coro->mainstack = 0; //actual work is done inside transfer /
783	coro->stack = 0;	1000	/coro->stack = 0;/
		1001
		1002	/* same as JMPENV_BOOTSTRAP */
		1003	/* we might be able to recycle start_env, but safe is safe */
		1004	/Zero(&coro->start_env, 1, JMPENV);/
		1005	coro->start_env.je_ret = -1;
		1006	coro->start_env.je_mustcatch = TRUE;
784		1007
785	RETVAL = coro;	1008	RETVAL = coro;
786	OUTPUT:	1009	OUTPUT:
787	RETVAL	1010	RETVAL
788		1011
789	void	1012	void
790	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	1013	transfer(prev, next, flags)
791	Coro::State_or_hashref prev	1014	SV *prev
792	Coro::State_or_hashref next	1015	SV *next
793	int flags	1016	int flags
794	PROTOTYPE: @	1017	PROTOTYPE: @
795	CODE:	1018	CODE:
		1019	PUTBACK;
		1020	SV_CORO (next, "Coro::transfer");
		1021	SV_CORO (prev, "Coro::transfer");
796	transfer (aTHX_ prev, next, flags);	1022	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		1023	SPAGAIN;
797		1024
798	void	1025	void
799	DESTROY(coro)	1026	DESTROY(coro)
800	Coro::State coro	1027	Coro::State coro
801	CODE:	1028	CODE:
802		1029
803	if (coro->mainstack && coro->mainstack != main_mainstack)	1030	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	1031	{
805	struct coro temp;	1032	struct coro temp;
806		1033
		1034	PUTBACK;
807	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1035	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
808	LOAD(aTHX_ coro);	1036	LOAD (aTHX_ coro);
		1037	SPAGAIN;
809		1038
810	destroy_stacks (aTHX);	1039	destroy_stacks (aTHX);
811		1040
812	LOAD((&temp)); /* this will get rid of defsv etc.. */	1041	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1042	SPAGAIN;
813		1043
814	coro->mainstack = 0;	1044	coro->mainstack = 0;
815	}	1045	}
816		1046
817	deallocate_stack (coro);	1047	deallocate_stack (coro);
818		1048	SvREFCNT_dec (coro->args);
819	Safefree (coro);	1049	Safefree (coro);
820		1050
821	void	1051	void
822	flush()	1052	_exit(code)
		1053	int code
		1054	PROTOTYPE: $
823	CODE:	1055	CODE:
824	#ifdef MAY_FLUSH	1056	_exit (code);
825	flush_padlist_cache ();
826	#endif
827		1057
828	MODULE = Coro::State PACKAGE = Coro::Cont	1058	MODULE = Coro::State PACKAGE = Coro::Cont
829		1059
830	# this is slightly dirty	1060	# this is slightly dirty (should expose a c-level api)
831		1061
832	void	1062	void
833	yield(...)	1063	yield(...)
834	PROTOTYPE: @	1064	PROTOTYPE: @
835	CODE:	1065	CODE:
836	static SV *returnstk;	1066	SV *yieldstack;
837	SV *sv;	1067	SV *sv;
838	AV *defav = GvAV (PL_defgv);	1068	AV *defav = GvAV (PL_defgv);
839	struct coro prev, next;	1069	struct coro prev, next;
840		1070
841	if (!returnstk)	1071	yieldstack = *hv_fetch (
842	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1072	(HV *)SvRV (GvSV (coro_current)),
		1073	"yieldstack", sizeof ("yieldstack") - 1,
		1074	0
		1075	);
843		1076
844	/* set up @_ -- ugly */	1077	/* set up @_ -- ugly */
845	av_clear (defav);	1078	av_clear (defav);
846	av_fill (defav, items - 1);	1079	av_fill (defav, items - 1);
847	while (items--)	1080	while (items--)
848	av_store (defav, items, SvREFCNT_inc (ST(items)));	1081	av_store (defav, items, SvREFCNT_inc (ST(items)));
849		1082
850	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
851	sv = av_pop ((AV *)SvRV (returnstk));	1083	sv = av_pop ((AV *)SvRV (yieldstack));
852	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1084	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
853	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1085	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
854	SvREFCNT_dec (sv);	1086	SvREFCNT_dec (sv);
855		1087
856	transfer(aTHX_ prev, next, 0);	1088	transfer (aTHX_ prev, next, 0);
857		1089
		1090	MODULE = Coro::State PACKAGE = Coro
		1091
		1092	# this is slightly dirty (should expose a c-level api)
		1093
		1094	BOOT:
		1095	{
		1096	int i;
		1097	HV *stash = gv_stashpv ("Coro", TRUE);
		1098
		1099	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1100	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1101	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1102	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1103	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1104	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1105
		1106	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1107	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1108
		1109	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1110	coro_ready[i] = newAV ();
		1111
		1112	{
		1113	SV *sv = perl_get_sv("Coro::API", 1);
		1114
		1115	coroapi.schedule = api_schedule;
		1116	coroapi.cede = api_cede;
		1117	coroapi.ready = api_ready;
		1118	coroapi.nready = &coro_nready;
		1119	coroapi.current = coro_current;
		1120
		1121	GCoroAPI = &coroapi;
		1122	sv_setiv(sv, (IV)&coroapi);
		1123	SvREADONLY_on(sv);
		1124	}
		1125	}
		1126
		1127	#if !PERL_MICRO
		1128
		1129	void
		1130	ready(self)
		1131	SV * self
		1132	PROTOTYPE: $
		1133	CODE:
		1134	api_ready (self);
		1135
		1136	#endif
		1137
		1138	int
		1139	nready(...)
		1140	PROTOTYPE:
		1141	CODE:
		1142	RETVAL = coro_nready;
		1143	OUTPUT:
		1144	RETVAL
		1145
		1146	void
		1147	schedule(...)
		1148	PROTOTYPE:
		1149	CODE:
		1150	api_schedule ();
		1151
		1152	void
		1153	cede(...)
		1154	PROTOTYPE:
		1155	CODE:
		1156	api_cede ();
		1157
		1158	# and these are hacks
		1159	SV *
		1160	_aio_get_state ()
		1161	CODE:
		1162	{
		1163	struct {
		1164	int errorno;
		1165	int laststype;
		1166	int laststatval;
		1167	Stat_t statcache;
		1168	} data;
		1169
		1170	data.errorno = errno;
		1171	data.laststype = PL_laststype;
		1172	data.laststatval = PL_laststatval;
		1173	data.statcache = PL_statcache;
		1174
		1175	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1176	}
		1177	OUTPUT:
		1178	RETVAL
		1179
		1180	void
		1181	_aio_set_state (char *data_)
		1182	PROTOTYPE: $
		1183	CODE:
		1184	{
		1185	struct {
		1186	int errorno;
		1187	int laststype;
		1188	int laststatval;
		1189	Stat_t statcache;
		1190	} data = (void )data_;
		1191
		1192	errno = data->errorno;
		1193	PL_laststype = data->laststype;
		1194	PL_laststatval = data->laststatval;
		1195	PL_statcache = data->statcache;
		1196	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.17 by root, Wed Jul 25 14:01:46 2001 UTC vs. Revision 1.76 by root, Thu Oct 26 08:45:56 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.17 by root, Wed Jul 25 14:01:46 2001 UTC vs.
Revision 1.76 by root, Thu Oct 26 08:45:56 2006 UTC