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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.22 by root, Sat Aug 11 23:10:56 2001 UTC vs.
Revision 1.71 by root, Wed Jan 25 21:43:58 2006 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		2
		3	#include "libcoro/coro.c"
		4
1	#include "EXTERN.h"	5	#include "EXTERN.h"
2	#include "perl.h"	6	#include "perl.h"
3	#include "XSUB.h"	7	#include "XSUB.h"
4		8
5	#include "libcoro/coro.c"	9	#include "patchlevel.h"
6		10
		11	#if PERL_VERSION < 6
		12	# ifndef PL_ppaddr
		13	# define PL_ppaddr ppaddr
		14	# endif
		15	# ifndef call_sv
		16	# define call_sv perl_call_sv
		17	# endif
		18	# ifndef get_sv
		19	# define get_sv perl_get_sv
		20	# endif
		21	# ifndef get_cv
		22	# define get_cv perl_get_cv
		23	# endif
		24	# ifndef IS_PADGV
		25	# define IS_PADGV(v) 0
		26	# endif
		27	# ifndef IS_PADCONST
		28	# define IS_PADCONST(v) 0
		29	# endif
		30	#endif
		31
		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 */
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"	47	#define SUB_INIT "Coro::State::initialize"
39	#define UCORO_STATE "_coro_state"	48	#define UCORO_STATE "_coro_state"
40		49
41	/* The next macro should delcare a variable stacklevel that contains and approximation	50	/* The next macro should declare a variable stacklevel that contains and approximation
42	* to the current C stack pointer. It's property is that it changes with each call	51	* to the current C stack pointer. Its property is that it changes with each call
43	* and should be unique. */	52	* and should be unique. */
44	#define dSTACKLEVEL void *stacklevel = &stacklevel	53	#define dSTACKLEVEL void *stacklevel = &stacklevel
45		54
		55	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		56
46	#define labs(l) ((l) >= 0 ? (l) : -(l))	57	#define labs(l) ((l) >= 0 ? (l) : -(l))
		58
		59	#include "CoroAPI.h"
		60
		61	#ifdef USE_ITHREADS
		62	static perl_mutex coro_mutex;
		63	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		64	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		65	#else
		66	# define LOCK (void)0
		67	# define UNLOCK (void)0
		68	#endif
		69
		70	static struct CoroAPI coroapi;
		71	static AV main_mainstack; / used to differentiate between $main and others */
		72	static HV *coro_state_stash;
		73	static SV *ucoro_state_sv;
		74	static U32 ucoro_state_hash;
		75	static SV coro_mortal; / will be freed after next transfer */
47		76
48	/* 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... */
49	typedef struct {	78	typedef struct {
50	int refcnt; /* pointer reference counter */	79	int refcnt; /* pointer reference counter */
51	int usecnt; /* shared by how many coroutines */	80	int usecnt; /* shared by how many coroutines */
56	void *sptr;	85	void *sptr;
57	long ssize; /* positive == mmap, otherwise malloc */	86	long ssize; /* positive == mmap, otherwise malloc */
58	} coro_stack;	87	} coro_stack;
59		88
60	struct coro {	89	struct coro {
		90	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		91	JMPENV start_env;
		92
61	/* the optional C context */	93	/* the optional C context */
62	coro_stack *stack;	94	coro_stack *stack;
63	void *cursp;	95	void *cursp;
64	int gencnt;	96	int gencnt;
65		97
…		…
77	AV *curstack;	109	AV *curstack;
78	AV *mainstack;	110	AV *mainstack;
79	SV **stack_sp;	111	SV **stack_sp;
80	OP *op;	112	OP *op;
81	SV **curpad;	113	SV **curpad;
		114	AV *comppad;
		115	CV *compcv;
82	SV **stack_base;	116	SV **stack_base;
83	SV **stack_max;	117	SV **stack_max;
84	SV **tmps_stack;	118	SV **tmps_stack;
85	I32 tmps_floor;	119	I32 tmps_floor;
86	I32 tmps_ix;	120	I32 tmps_ix;
…		…
95	I32 savestack_ix;	129	I32 savestack_ix;
96	I32 savestack_max;	130	I32 savestack_max;
97	OP **retstack;	131	OP **retstack;
98	I32 retstack_ix;	132	I32 retstack_ix;
99	I32 retstack_max;	133	I32 retstack_max;
		134	PMOP *curpm;
100	COP *curcop;	135	COP *curcop;
101	JMPENV *top_env;	136	JMPENV *top_env;
102		137
103	/* data associated with this coroutine (initial args) */	138	/* data associated with this coroutine (initial args) */
104	AV *args;	139	AV *args;
105	};	140	};
106		141
107	typedef struct coro *Coro__State;	142	typedef struct coro *Coro__State;
108	typedef struct coro *Coro__State_or_hashref;	143	typedef struct coro *Coro__State_or_hashref;
109		144
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 */	145	/* mostly copied from op.c:cv_clone2 */
117	STATIC AV *	146	STATIC AV *
118	clone_padlist (AV *protopadlist)	147	clone_padlist (pTHX_ AV *protopadlist)
119	{	148	{
120	AV *av;	149	AV *av;
121	I32 ix;	150	I32 ix;
122	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	151	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
123	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	152	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
142	av_store (newpadlist, 1, (SV *) newpad);	171	av_store (newpadlist, 1, (SV *) newpad);
143		172
144	av = newAV (); /* will be @_ */	173	av = newAV (); /* will be @_ */
145	av_extend (av, 0);	174	av_extend (av, 0);
146	av_store (newpad, 0, (SV *) av);	175	av_store (newpad, 0, (SV *) av);
147	AvFLAGS (av) = AVf_REIFY;	176	AvREIFY_on (av);
148		177
149	for (ix = fpad; ix > 0; ix--)	178	for (ix = fpad; ix > 0; ix--)
150	{	179	{
151	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	180	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		181
152	if (namesv && namesv != &PL_sv_undef)	182	if (namesv && namesv != &PL_sv_undef)
153	{	183	{
154	char name = SvPVX (namesv); / XXX */	184	char name = SvPVX (namesv); / XXX */
		185
155	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	186	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
156	{ /* lexical from outside? */	187	{ /* lexical from outside? */
157	npad[ix] = SvREFCNT_inc (ppad[ix]);	188	npad[ix] = SvREFCNT_inc (ppad[ix]);
158	}	189	}
159	else	190	else
…		…
165	sv = (SV *) newAV ();	196	sv = (SV *) newAV ();
166	else if (*name == '%')	197	else if (*name == '%')
167	sv = (SV *) newHV ();	198	sv = (SV *) newHV ();
168	else	199	else
169	sv = NEWSV (0, 0);	200	sv = NEWSV (0, 0);
		201
		202	#ifdef SvPADBUSY
170	if (!SvPADBUSY (sv))	203	if (!SvPADBUSY (sv))
		204	#endif
171	SvPADMY_on (sv);	205	SvPADMY_on (sv);
		206
172	npad[ix] = sv;	207	npad[ix] = sv;
173	}	208	}
174	}	209	}
175	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	210	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
176	{	211	{
…		…
205	#endif	240	#endif
206		241
207	return newpadlist;	242	return newpadlist;
208	}	243	}
209		244
210	#ifdef MAY_FLUSH	245	STATIC void
211	STATIC AV *
212	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
213	{	247	{
214	/* may be during global destruction */	248	/* may be during global destruction */
215	if (SvREFCNT(padlist))	249	if (SvREFCNT (padlist))
216	{	250	{
217	I32 i = AvFILLp(padlist);	251	I32 i = AvFILLp (padlist);
218	while (i >= 0)	252	while (i >= 0)
219	{	253	{
220	SV **svp = av_fetch(padlist, i--, FALSE);	254	SV **svp = av_fetch (padlist, i--, FALSE);
221	SV sv = svp ? svp : Nullsv;
222	if (sv)	255	if (svp)
		256	{
		257	SV *sv;
		258	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
223	SvREFCNT_dec(sv);	259	SvREFCNT_dec (sv);
		260
		261	SvREFCNT_dec (*svp);
		262	}
224	}	263	}
225		264
226	SvREFCNT_dec((SV*)padlist);	265	SvREFCNT_dec ((SV*)padlist);
227	}	266	}
228	}	267	}
229	#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};
230		285
231	/* the next two functions merely cache the padlists */	286	/* the next two functions merely cache the padlists */
232	STATIC void	287	STATIC void
233	get_padlist (CV *cv)	288	get_padlist (pTHX_ CV *cv)
234	{	289	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
236		291
237	if (he && AvFILLp ((AV )he) >= 0)	292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
238	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
239	else	294	else
240	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
241	}	296	}
242		297
243	STATIC void	298	STATIC void
244	put_padlist (CV *cv)	299	put_padlist (pTHX_ CV *cv)
245	{	300	{
246	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
247		302
248	if (SvTYPE (*he) != SVt_PVAV)	303	if (!mg)
249	{	304	{
250	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;
251	he = (SV )newAV ();	308	mg->mg_obj = (SV *)newAV ();
252	}	309	}
253		310
254	av_push ((AV )he, (SV *)CvPADLIST (cv));	311	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
255	}	312	}
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		313
283	#define SB do {	314	#define SB do {
284	#define SE } while (0)	315	#define SE } while (0)
285		316
286	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	317	#define LOAD(state) load_state(aTHX_ (state));
287	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	318	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
288		319
289	#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
290		321
291	static void	322	static void
292	load_state(pTHX_ Coro__State c)	323	load_state(pTHX_ Coro__State c)
293	{	324	{
294	PL_dowarn = c->dowarn;	325	PL_dowarn = c->dowarn;
…		…
298	PL_curstack = c->curstack;	329	PL_curstack = c->curstack;
299	PL_mainstack = c->mainstack;	330	PL_mainstack = c->mainstack;
300	PL_stack_sp = c->stack_sp;	331	PL_stack_sp = c->stack_sp;
301	PL_op = c->op;	332	PL_op = c->op;
302	PL_curpad = c->curpad;	333	PL_curpad = c->curpad;
		334	PL_comppad = c->comppad;
		335	PL_compcv = c->compcv;
303	PL_stack_base = c->stack_base;	336	PL_stack_base = c->stack_base;
304	PL_stack_max = c->stack_max;	337	PL_stack_max = c->stack_max;
305	PL_tmps_stack = c->tmps_stack;	338	PL_tmps_stack = c->tmps_stack;
306	PL_tmps_floor = c->tmps_floor;	339	PL_tmps_floor = c->tmps_floor;
307	PL_tmps_ix = c->tmps_ix;	340	PL_tmps_ix = c->tmps_ix;
…		…
313	PL_scopestack_ix = c->scopestack_ix;	346	PL_scopestack_ix = c->scopestack_ix;
314	PL_scopestack_max = c->scopestack_max;	347	PL_scopestack_max = c->scopestack_max;
315	PL_savestack = c->savestack;	348	PL_savestack = c->savestack;
316	PL_savestack_ix = c->savestack_ix;	349	PL_savestack_ix = c->savestack_ix;
317	PL_savestack_max = c->savestack_max;	350	PL_savestack_max = c->savestack_max;
		351	#ifdef PL_retstack
318	PL_retstack = c->retstack;	352	PL_retstack = c->retstack;
319	PL_retstack_ix = c->retstack_ix;	353	PL_retstack_ix = c->retstack_ix;
320	PL_retstack_max = c->retstack_max;	354	PL_retstack_max = c->retstack_max;
		355	#endif
		356	PL_curpm = c->curpm;
321	PL_curcop = c->curcop;	357	PL_curcop = c->curcop;
322	PL_top_env = c->top_env;	358	PL_top_env = c->top_env;
323		359
324	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
325	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
334	{	370	{
335	AV padlist = (AV )POPs;	371	AV padlist = (AV )POPs;
336		372
337	if (padlist)	373	if (padlist)
338	{	374	{
339	put_padlist (cv); /* mark this padlist as available */	375	put_padlist (aTHX_ cv); /* mark this padlist as available */
340	CvPADLIST(cv) = padlist;	376	CvPADLIST(cv) = padlist;
341	#ifdef USE_THREADS
342	/CvOWNER(cv) = (struct perl_thread )POPs;*/
343	#endif
344	}	377	}
345		378
346	++CvDEPTH(cv);	379	++CvDEPTH(cv);
347	}	380	}
348		381
…		…
366		399
367	PUSHs (Nullsv);	400	PUSHs (Nullsv);
368	/* this loop was inspired by pp_caller */	401	/* this loop was inspired by pp_caller */
369	for (;;)	402	for (;;)
370	{	403	{
371	do	404	while (cxix >= 0)
372	{	405	{
373	PERL_CONTEXT *cx = &ccstk[cxix--];	406	PERL_CONTEXT *cx = &ccstk[cxix--];
374		407
375	if (CxTYPE(cx) == CXt_SUB)	408	if (CxTYPE(cx) == CXt_SUB)
376	{	409	{
377	CV *cv = cx->blk_sub.cv;	410	CV *cv = cx->blk_sub.cv;
378	if (CvDEPTH(cv))	411	if (CvDEPTH(cv))
379	{	412	{
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);	413	EXTEND (SP, CvDEPTH(cv)*2);
386		414
387	while (--CvDEPTH(cv))	415	while (--CvDEPTH(cv))
388	{	416	{
389	/* this tells the restore code to increment CvDEPTH */	417	/* this tells the restore code to increment CvDEPTH */
…		…
392	}	420	}
393		421
394	PUSHs ((SV *)CvPADLIST(cv));	422	PUSHs ((SV *)CvPADLIST(cv));
395	PUSHs ((SV *)cv);	423	PUSHs ((SV *)cv);
396		424
397	get_padlist (cv); /* this is a monster */	425	get_padlist (aTHX_ cv); /* this is a monster */
398	}	426	}
399	}	427	}
		428	#ifdef CXt_FORMAT
400	else if (CxTYPE(cx) == CXt_FORMAT)	429	else if (CxTYPE(cx) == CXt_FORMAT)
401	{	430	{
402	/* I never used formats, so how should I know how these are implemented? */	431	/* I never used formats, so how should I know how these are implemented? */
403	/* my bold guess is as a simple, plain sub... */	432	/* my bold guess is as a simple, plain sub... */
404	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	433	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
405	}	434	}
		435	#endif
406	}	436	}
407	while (cxix >= 0);
408		437
409	if (top_si->si_type == PERLSI_MAIN)	438	if (top_si->si_type == PERLSI_MAIN)
410	break;	439	break;
411		440
412	top_si = top_si->si_prev;	441	top_si = top_si->si_prev;
…		…
418	}	447	}
419		448
420	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	449	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
421	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	450	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
422	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	451	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		452
429	c->dowarn = PL_dowarn;	453	c->dowarn = PL_dowarn;
430	c->in_eval = PL_in_eval;	454	c->in_eval = PL_in_eval;
431		455
432	c->curstackinfo = PL_curstackinfo;	456	c->curstackinfo = PL_curstackinfo;
433	c->curstack = PL_curstack;	457	c->curstack = PL_curstack;
434	c->mainstack = PL_mainstack;	458	c->mainstack = PL_mainstack;
435	c->stack_sp = PL_stack_sp;	459	c->stack_sp = PL_stack_sp;
436	c->op = PL_op;	460	c->op = PL_op;
437	c->curpad = PL_curpad;	461	c->curpad = PL_curpad;
		462	c->comppad = PL_comppad;
		463	c->compcv = PL_compcv;
438	c->stack_base = PL_stack_base;	464	c->stack_base = PL_stack_base;
439	c->stack_max = PL_stack_max;	465	c->stack_max = PL_stack_max;
440	c->tmps_stack = PL_tmps_stack;	466	c->tmps_stack = PL_tmps_stack;
441	c->tmps_floor = PL_tmps_floor;	467	c->tmps_floor = PL_tmps_floor;
442	c->tmps_ix = PL_tmps_ix;	468	c->tmps_ix = PL_tmps_ix;
…		…
448	c->scopestack_ix = PL_scopestack_ix;	474	c->scopestack_ix = PL_scopestack_ix;
449	c->scopestack_max = PL_scopestack_max;	475	c->scopestack_max = PL_scopestack_max;
450	c->savestack = PL_savestack;	476	c->savestack = PL_savestack;
451	c->savestack_ix = PL_savestack_ix;	477	c->savestack_ix = PL_savestack_ix;
452	c->savestack_max = PL_savestack_max;	478	c->savestack_max = PL_savestack_max;
		479	#ifdef PL_retstack
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	#endif
		484	c->curpm = PL_curpm;
456	c->curcop = PL_curcop;	485	c->curcop = PL_curcop;
457	c->top_env = PL_top_env;	486	c->top_env = PL_top_env;
458	}	487	}
459		488
460	/*	489	/*
461	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
463	* on the assumption that coroutines do not usually need	492	* on the (sometimes correct) assumption that coroutines do
464	* a lot of stackspace.	493	* not usually need a lot of stackspace.
465	*/	494	*/
466	STATIC void	495	STATIC void
467	coro_init_stacks (pTHX)	496	coro_init_stacks (pTHX)
468	{	497	{
		498	LOCK;
		499
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	500	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	501	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	502	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	503	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		504
…		…
482		513
483	New(54,PL_markstack,16,I32);	514	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	515	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	516	PL_markstack_max = PL_markstack + 16;
486		517
		518	#ifdef SET_MARK_OFFSET
487	SET_MARK_OFFSET;	519	SET_MARK_OFFSET;
		520	#endif
488		521
489	New(54,PL_scopestack,16,I32);	522	New(54,PL_scopestack,16,I32);
490	PL_scopestack_ix = 0;	523	PL_scopestack_ix = 0;
491	PL_scopestack_max = 16;	524	PL_scopestack_max = 16;
492		525
493	New(54,PL_savestack,96,ANY);	526	New(54,PL_savestack,96,ANY);
494	PL_savestack_ix = 0;	527	PL_savestack_ix = 0;
495	PL_savestack_max = 96;	528	PL_savestack_max = 96;
496		529
		530	#ifdef PL_retstack
497	New(54,PL_retstack,8,OP*);	531	New(54,PL_retstack,8,OP*);
498	PL_retstack_ix = 0;	532	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	533	PL_retstack_max = 8;
		534	#endif
		535
		536	UNLOCK;
500	}	537	}
501		538
502	/*	539	/*
503	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
504	* still there is a memleak of 128 bytes...
505	*/	541	*/
506	STATIC void	542	STATIC void
507	destroy_stacks(pTHX)	543	destroy_stacks(pTHX)
508	{	544	{
		545	if (!IN_DESTRUCT)
		546	{
509	/* is this ugly, I ask? */	547	/* is this ugly, I ask? */
510	while (PL_scopestack_ix)	548	LEAVE_SCOPE (0);
511	LEAVE;
512		549
513	/* sure it is, but more important: is it correct?? :/ */	550	/* 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;	551	FREETMPS;
		552
		553	/POPSTACK_TO (PL_mainstack);//D//use/
		554	}
516		555
517	while (PL_curstackinfo->si_next)	556	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	557	PL_curstackinfo = PL_curstackinfo->si_next;
519		558
520	while (PL_curstackinfo)	559	while (PL_curstackinfo)
521	{	560	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	561	PERL_SI *p = PL_curstackinfo->si_prev;
523		562
524	{	563	{ /D//remove/
525	dSP;	564	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	565	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */	566	PUTBACK; /* possibly superfluous */
528	}	567	}
529		568
530	dounwind(-1);	569	if (!IN_DESTRUCT)
531		570	{
		571	dounwind (-1);/D//remove/
532	SvREFCNT_dec(PL_curstackinfo->si_stack);	572	SvREFCNT_dec (PL_curstackinfo->si_stack);
		573	}
		574
533	Safefree(PL_curstackinfo->si_cxstack);	575	Safefree (PL_curstackinfo->si_cxstack);
534	Safefree(PL_curstackinfo);	576	Safefree (PL_curstackinfo);
535	PL_curstackinfo = p;	577	PL_curstackinfo = p;
536	}	578	}
537		579
538	Safefree(PL_tmps_stack);	580	Safefree (PL_tmps_stack);
539	Safefree(PL_markstack);	581	Safefree (PL_markstack);
540	Safefree(PL_scopestack);	582	Safefree (PL_scopestack);
541	Safefree(PL_savestack);	583	Safefree (PL_savestack);
		584	#ifdef PL_retstack
542	Safefree(PL_retstack);	585	Safefree (PL_retstack);
		586	#endif
543	}	587	}
544		588
545	static void	589	static void
546	allocate_stack (Coro__State ctx, int alloc)	590	allocate_stack (Coro__State ctx, int alloc)
547	{	591	{
…		…
550	New (0, stack, 1, coro_stack);	594	New (0, stack, 1, coro_stack);
551		595
552	stack->refcnt = 1;	596	stack->refcnt = 1;
553	stack->usecnt = 1;	597	stack->usecnt = 1;
554	stack->gencnt = ctx->gencnt = 0;	598	stack->gencnt = ctx->gencnt = 0;
		599
555	if (alloc)	600	if (alloc)
556	{	601	{
557	#ifdef HAVE_MMAP	602	#if HAVE_MMAP
558	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	603	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);	604	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
560	if (stack->sptr == (void *)-1)	605	if (stack->sptr == (void *)-1)
561	#endif	606	#endif
562	{	607	{
563	/FIXME//D//* reasonable stack size! */	608	/FIXME//D//* reasonable stack size! */
564	stack->ssize = -4096 * sizeof (long);	609	stack->ssize = - (STACKSIZE * 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	/PL_curcop = 0;/	656	/PL_curcop = 0;/
611	/PL_in_eval = PL_in_eval;/ /* inherit */	657	/PL_in_eval = PL_in_eval;/ /* inherit */
612	SvREFCNT_dec (GvAV (PL_defgv));	658	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args;	659	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
614		660
615	SPAGAIN;	661	SPAGAIN;
616		662
617	if (ctx->stack)	663	if (ctx->stack)
618	{	664	{
…		…
645	* that doesn't matter, though, since it is only	691	* that doesn't matter, though, since it is only
646	* pp_nextstate and we never return...	692	* pp_nextstate and we never return...
647	* ah yes, and I don't care anyways ;)	693	* ah yes, and I don't care anyways ;)
648	*/	694	*/
649	PUTBACK;	695	PUTBACK;
650	PL_op = pp_entersub();	696	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
651	SPAGAIN;	697	SPAGAIN;
652		698
653	ENTER; /* necessary e.g. for dounwind */	699	ENTER; /* necessary e.g. for dounwind */
654	}	700	}
655	}	701	}
…		…
658	continue_coro (void *arg)	704	continue_coro (void *arg)
659	{	705	{
660	/*	706	/*
661	* this is a _very_ stripped down perl interpreter ;)	707	* this is a _very_ stripped down perl interpreter ;)
662	*/	708	*/
		709	dTHX;
663	Coro__State ctx = (Coro__State)arg;	710	Coro__State ctx = (Coro__State)arg;
		711	JMPENV coro_start_env;
664		712
665	/FIXME//* must set up top_env here */	713	PL_top_env = &ctx->start_env;
		714
666	ctx->cursp = 0;	715	ctx->cursp = 0;
667	PL_op = PL_op->op_next;	716	PL_op = PL_op->op_next;
668	CALLRUNOPS(aTHX);	717	CALLRUNOPS(aTHX);
669		718
670	abort ();	719	abort ();
671	}	720	}
672		721
673	STATIC void	722	STATIC void
674	transfer(pTHX_ struct coro prev, struct coro next, int flags)	723	transfer (pTHX_ struct coro prev, struct coro next, int flags)
675	{	724	{
676	dSP;
677	dSTACKLEVEL;	725	dSTACKLEVEL;
678		726
679	if (prev != next)	727	if (prev != next)
680	{	728	{
681	if (next->mainstack)	729	if (next->mainstack)
682	{	730	{
		731	LOCK;
683	SAVE (prev, flags);	732	SAVE (prev, flags);
684	LOAD (next);	733	LOAD (next);
		734	UNLOCK;
685		735
686	/* mark this state as in-use */	736	/* mark this state as in-use */
687	next->mainstack = 0;	737	next->mainstack = 0;
688	next->tmps_ix = -2;	738	next->tmps_ix = -2;
689		739
…		…
708	continue_coro, (void *)next,	758	continue_coro, (void *)next,
709	next->stack->sptr, labs (next->stack->ssize));	759	next->stack->sptr, labs (next->stack->ssize));
710	}	760	}
711		761
712	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	762	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		763	prev->cursp = stacklevel;
		764	/* don't add any code here */
713	}	765	}
714		766	else
		767	next->cursp = stacklevel;
715	}	768	}
716	else if (next->tmps_ix == -2)	769	else if (next->tmps_ix == -2)
717	croak ("tried to transfer to running coroutine");	770	croak ("tried to transfer to running coroutine");
718	else	771	else
719	{	772	{
		773	LOCK;
720	SAVE (prev, -1); /* first get rid of the old state */	774	SAVE (prev, -1); /* first get rid of the old state */
		775	UNLOCK;
721		776
722	if (flags & TRANSFER_SAVE_CCTXT)	777	if (flags & TRANSFER_SAVE_CCTXT)
723	{	778	{
724	if (!prev->stack)	779	if (!prev->stack)
725	allocate_stack (prev, 0);	780	allocate_stack (prev, 0);
726		781
727	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	782	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
728	{	783	{
		784	PL_top_env = &next->start_env;
		785
729	setup_coro (next);	786	setup_coro (next);
		787	next->cursp = stacklevel;
730		788
731	prev->stack->refcnt++;	789	prev->stack->refcnt++;
732	prev->stack->usecnt++;	790	prev->stack->usecnt++;
733	next->stack = prev->stack;	791	next->stack = prev->stack;
734	next->gencnt = prev->gencnt;	792	next->gencnt = prev->gencnt;
735	}	793	}
736	else	794	else
737	{	795	{
		796	assert (!next->stack);
738	allocate_stack (next, 1);	797	allocate_stack (next, 1);
739	coro_create (&(next->stack->cctx),	798	coro_create (&(next->stack->cctx),
740	setup_coro, (void *)next,	799	setup_coro, (void *)next,
741	next->stack->sptr, labs (next->stack->ssize));	800	next->stack->sptr, labs (next->stack->ssize));
742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	801	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		802	prev->cursp = stacklevel;
		803	/* don't add any code here */
743	}	804	}
744	}	805	}
745	else	806	else
		807	{
746	setup_coro (next);	808	setup_coro (next);
		809	next->cursp = stacklevel;
		810	}
747	}	811	}
748	}	812	}
749		813
750	next->cursp = stacklevel;	814	LOCK;
751	}	815	if (coro_mortal)
752
753	static struct coro *
754	sv_to_coro (SV arg, const char funcname, const char *varname)
755	{
756	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
757	{	816	{
		817	SvREFCNT_dec (coro_mortal);
		818	coro_mortal = 0;
		819	}
		820	UNLOCK;
		821	}
		822
		823	#define SV_CORO(sv,func) \
		824	do { \
		825	if (SvROK (sv)) \
		826	sv = SvRV (sv); \
		827	\
		828	if (SvTYPE (sv) == SVt_PVHV) \
		829	{ \
758	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	830	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
759		831	\
760	if (!he)	832	if (!he) \
761	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);	833	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
762		834	\
763	arg = HeVAL(he);	835	(sv) = SvRV (HeVAL(he)); \
764	}	836	} \
765		837	\
766	/* must also be changed inside Coro::Cont::yield */	838	/* must also be changed inside Coro::Cont::yield */ \
767	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	839	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
768	return (struct coro ) SvIV((SV)SvRV(arg));
769	else
770	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	840	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		841	\
		842	} while(0)
		843
		844	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		845
		846	static void
		847	api_transfer(pTHX_ SV prev, SV next, int flags)
		848	{
		849	SV_CORO (prev, "Coro::transfer");
		850	SV_CORO (next, "Coro::transfer");
		851
		852	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
771	}	853	}
772		854
773	/ Coro ******************************************************************/	855	/ Coro ******************************************************************/
774		856
775	#define PRIO_MAX 3	857	#define PRIO_MAX 3
…		…
780	#define PRIO_MIN -4	862	#define PRIO_MIN -4
781		863
782	/* for Coro.pm */	864	/* for Coro.pm */
783	static GV coro_current, coro_idle;	865	static GV coro_current, coro_idle;
784	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	866	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		867	static int coro_nready;
785		868
786	static void	869	static void
787	coro_enq (SV *sv)	870	coro_enq (pTHX_ SV *sv)
788	{	871	{
789	if (SvROK (sv))	872	if (SvTYPE (sv) == SVt_PVHV)
790	{	873	{
791	SV *hv = SvRV (sv);
792	if (SvTYPE (hv) == SVt_PVHV)
793	{
794	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);	874	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
795	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;	875	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
796		876
797	prio = prio > PRIO_MAX ? PRIO_MAX	877	prio = prio > PRIO_MAX ? PRIO_MAX
798	: prio < PRIO_MIN ? PRIO_MIN	878	: prio < PRIO_MIN ? PRIO_MIN
799	: prio;	879	: prio;
800		880
801	av_push (coro_ready [prio - PRIO_MIN], sv);	881	av_push (coro_ready [prio - PRIO_MIN], sv);
		882	coro_nready++;
802		883
803	return;	884	return;
804	}
805	}	885	}
806		886
807	croak ("Coro::ready tried to enqueue something that is not a coroutine");	887	croak ("Coro::ready tried to enqueue something that is not a coroutine");
808	}	888	}
809		889
810	static SV *	890	static SV *
811	coro_deq (int min_prio)	891	coro_deq (pTHX_ int min_prio)
812	{	892	{
813	int prio = PRIO_MAX - PRIO_MIN;	893	int prio = PRIO_MAX - PRIO_MIN;
814		894
815	min_prio -= PRIO_MIN;	895	min_prio -= PRIO_MIN;
816	if (min_prio < 0)	896	if (min_prio < 0)
817	min_prio = 0;	897	min_prio = 0;
818		898
819	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	899	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
820	if (av_len (coro_ready[prio]) >= 0)	900	if (av_len (coro_ready[prio]) >= 0)
		901	{
		902	coro_nready--;
821	return av_shift (coro_ready[prio]);	903	return av_shift (coro_ready[prio]);
		904	}
822		905
823	return 0;	906	return 0;
		907	}
		908
		909	static void
		910	api_ready (SV *coro)
		911	{
		912	dTHX;
		913
		914	if (SvROK (coro))
		915	coro = SvRV (coro);
		916
		917	LOCK;
		918	coro_enq (aTHX_ SvREFCNT_inc (coro));
		919	UNLOCK;
		920	}
		921
		922	static void
		923	api_schedule (void)
		924	{
		925	dTHX;
		926
		927	SV prev, next;
		928
		929	LOCK;
		930
		931	prev = SvRV (GvSV (coro_current));
		932	next = coro_deq (aTHX_ PRIO_MIN);
		933
		934	if (!next)
		935	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		936
		937	/* free this only after the transfer */
		938	coro_mortal = prev;
		939	SV_CORO (prev, "Coro::schedule");
		940
		941	SvRV (GvSV (coro_current)) = next;
		942
		943	SV_CORO (next, "Coro::schedule");
		944
		945	UNLOCK;
		946
		947	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		948	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		949	}
		950
		951	static void
		952	api_cede (void)
		953	{
		954	dTHX;
		955
		956	LOCK;
		957	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		958	UNLOCK;
		959
		960	api_schedule ();
824	}	961	}
825		962
826	MODULE = Coro::State PACKAGE = Coro::State	963	MODULE = Coro::State PACKAGE = Coro::State
827		964
828	PROTOTYPES: ENABLE	965	PROTOTYPES: ENABLE
829		966
830	BOOT:	967	BOOT:
831	{ /* {} necessary for stoopid perl-5.6.x */	968	{ /* {} necessary for stoopid perl-5.6.x */
		969	#ifdef USE_ITHREADS
		970	MUTEX_INIT (&coro_mutex);
		971	#endif
		972
832	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	973	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
833	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	974	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
834	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	975	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
835		976
836	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	977	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
837	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	978	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
838	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	979	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
839	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	980	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
840		981
841	if (!padlist_cache)
842	padlist_cache = newHV ();
843
844	main_mainstack = PL_mainstack;	982	main_mainstack = PL_mainstack;
		983
		984	coroapi.ver = CORO_API_VERSION;
		985	coroapi.transfer = api_transfer;
845	}	986	}
846		987
847	Coro::State	988	Coro::State
848	_newprocess(args)	989	_newprocess(args)
849	SV * args	990	SV * args
…		…
852	Coro__State coro;	993	Coro__State coro;
853		994
854	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	995	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
855	croak ("Coro::State::_newprocess expects an arrayref");	996	croak ("Coro::State::_newprocess expects an arrayref");
856		997
857	New (0, coro, 1, struct coro);	998	Newz (0, coro, 1, struct coro);
858		999
859	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1000	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
860	coro->mainstack = 0; /* actual work is done inside transfer */	1001	/coro->mainstack = 0; //actual work is done inside transfer /
861	coro->stack = 0;	1002	/coro->stack = 0;/
		1003
		1004	/* same as JMPENV_BOOTSTRAP */
		1005	/* we might be able to recycle start_env, but safe is safe */
		1006	/Zero(&coro->start_env, 1, JMPENV);/
		1007	coro->start_env.je_ret = -1;
		1008	coro->start_env.je_mustcatch = TRUE;
862		1009
863	RETVAL = coro;	1010	RETVAL = coro;
864	OUTPUT:	1011	OUTPUT:
865	RETVAL	1012	RETVAL
866		1013
867	void	1014	void
868	transfer(prev, next, flags)	1015	transfer(prev, next, flags)
869	Coro::State_or_hashref prev	1016	SV *prev
870	Coro::State_or_hashref next	1017	SV *next
871	int flags	1018	int flags
872	PROTOTYPE: @	1019	PROTOTYPE: @
873	CODE:	1020	CODE:
874	PUTBACK;	1021	PUTBACK;
		1022	SV_CORO (next, "Coro::transfer");
		1023	SV_CORO (prev, "Coro::transfer");
875	transfer (aTHX_ prev, next, flags);	1024	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
876	SPAGAIN;	1025	SPAGAIN;
877		1026
878	void	1027	void
879	DESTROY(coro)	1028	DESTROY(coro)
880	Coro::State coro	1029	Coro::State coro
…		…
882		1031
883	if (coro->mainstack && coro->mainstack != main_mainstack)	1032	if (coro->mainstack && coro->mainstack != main_mainstack)
884	{	1033	{
885	struct coro temp;	1034	struct coro temp;
886		1035
		1036	PUTBACK;
887	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1037	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
888	LOAD(aTHX_ coro);	1038	LOAD (aTHX_ coro);
		1039	SPAGAIN;
889		1040
890	destroy_stacks (aTHX);	1041	destroy_stacks (aTHX);
891		1042
892	LOAD((&temp)); /* this will get rid of defsv etc.. */	1043	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1044	SPAGAIN;
893		1045
894	coro->mainstack = 0;	1046	coro->mainstack = 0;
895	}	1047	}
896		1048
897	deallocate_stack (coro);	1049	deallocate_stack (coro);
898		1050	SvREFCNT_dec (coro->args);
899	Safefree (coro);	1051	Safefree (coro);
900
901	void
902	flush()
903	CODE:
904	#ifdef MAY_FLUSH
905	flush_padlist_cache ();
906	#endif
907		1052
908	void	1053	void
909	_exit(code)	1054	_exit(code)
910	int code	1055	int code
911	PROTOTYPE: $	1056	PROTOTYPE: $
912	CODE:	1057	CODE:
913	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
914	_exit (code);	1058	_exit (code);
915	#else
916	signal (SIGTERM, SIG_DFL);
917	raise (SIGTERM);
918	exit (code);
919	#endif
920		1059
921	MODULE = Coro::State PACKAGE = Coro::Cont	1060	MODULE = Coro::State PACKAGE = Coro::Cont
922		1061
923	# this is slightly dirty (should expose a c-level api)	1062	# this is slightly dirty (should expose a c-level api)
924		1063
925	void	1064	void
926	yield(...)	1065	yield(...)
927	PROTOTYPE: @	1066	PROTOTYPE: @
928	CODE:	1067	CODE:
929	static SV *returnstk;	1068	SV *yieldstack;
930	SV *sv;	1069	SV *sv;
931	AV *defav = GvAV (PL_defgv);	1070	AV *defav = GvAV (PL_defgv);
932	struct coro prev, next;	1071	struct coro prev, next;
933		1072
934	if (!returnstk)	1073	yieldstack = *hv_fetch (
935	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1074	(HV *)SvRV (GvSV (coro_current)),
		1075	"yieldstack", sizeof ("yieldstack") - 1,
		1076	0
		1077	);
936		1078
937	/* set up @_ -- ugly */	1079	/* set up @_ -- ugly */
938	av_clear (defav);	1080	av_clear (defav);
939	av_fill (defav, items - 1);	1081	av_fill (defav, items - 1);
940	while (items--)	1082	while (items--)
941	av_store (defav, items, SvREFCNT_inc (ST(items)));	1083	av_store (defav, items, SvREFCNT_inc (ST(items)));
942		1084
943	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
944	sv = av_pop ((AV *)SvRV (returnstk));	1085	sv = av_pop ((AV *)SvRV (yieldstack));
945	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1086	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
946	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1087	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
947	SvREFCNT_dec (sv);	1088	SvREFCNT_dec (sv);
948		1089
949	transfer(aTHX_ prev, next, 0);	1090	transfer (aTHX_ prev, next, 0);
950		1091
951	MODULE = Coro::State PACKAGE = Coro	1092	MODULE = Coro::State PACKAGE = Coro
952		1093
953	# this is slightly dirty (should expose a c-level api)	1094	# this is slightly dirty (should expose a c-level api)
954		1095
…		…
967	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1108	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
968	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1109	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
969		1110
970	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1111	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
971	coro_ready[i] = newAV ();	1112	coro_ready[i] = newAV ();
		1113
		1114	{
		1115	SV *sv = perl_get_sv("Coro::API", 1);
		1116
		1117	coroapi.schedule = api_schedule;
		1118	coroapi.cede = api_cede;
		1119	coroapi.ready = api_ready;
		1120	coroapi.nready = &coro_nready;
		1121	coroapi.current = coro_current;
		1122
		1123	GCoroAPI = &coroapi;
		1124	sv_setiv(sv, (IV)&coroapi);
		1125	SvREADONLY_on(sv);
		1126	}
972	}	1127	}
		1128
		1129	#if !PERL_MICRO
973		1130
974	void	1131	void
975	ready(self)	1132	ready(self)
976	SV * self	1133	SV * self
		1134	PROTOTYPE: $
977	CODE:	1135	CODE:
978	coro_enq (SvREFCNT_inc (self));	1136	api_ready (self);
		1137
		1138	#endif
		1139
		1140	int
		1141	nready(...)
		1142	PROTOTYPE:
		1143	CODE:
		1144	RETVAL = coro_nready;
		1145	OUTPUT:
		1146	RETVAL
979		1147
980	void	1148	void
981	schedule(...)	1149	schedule(...)
982	ALIAS:	1150	PROTOTYPE:
983	cede = 1
984	CODE:	1151	CODE:
985	SV prev, next;	1152	api_schedule ();
986		1153
987	prev = GvSV (coro_current);	1154	void
		1155	cede(...)
		1156	PROTOTYPE:
		1157	CODE:
		1158	api_cede ();
988		1159
989	if (ix)	1160	# and these are hacks
990	coro_enq (SvREFCNT_inc (prev));	1161	SV *
		1162	_aio_get_state ()
		1163	CODE:
		1164	{
		1165	struct {
		1166	int errorno;
		1167	int laststype;
		1168	int laststatval;
		1169	Stat_t statcache;
		1170	} data;
991		1171
992	next = coro_deq (PRIO_MIN);	1172	data.errorno = errno;
		1173	data.laststype = PL_laststype;
		1174	data.laststatval = PL_laststatval;
		1175	data.statcache = PL_statcache;
993		1176
994	if (!next)	1177	RETVAL = newSVpvn ((char *)&data, sizeof data);
995	next = SvREFCNT_inc (GvSV (coro_idle));	1178	}
		1179	OUTPUT:
		1180	RETVAL
996		1181
997	GvSV (coro_current) = SvREFCNT_inc (next);	1182	void
998	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),	1183	_aio_set_state (char *data_)
999	sv_to_coro (next, "Coro::schedule", "next coroutine"),	1184	PROTOTYPE: $
1000	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	1185	CODE:
1001	SvREFCNT_dec (next);	1186	{
1002	SvREFCNT_dec (prev);	1187	struct {
1003		1188	int errorno;
		1189	int laststype;
		1190	int laststatval;
		1191	Stat_t statcache;
		1192	} data = (void )data_;
		1193
		1194	errno = data->errorno;
		1195	PL_laststype = data->laststype;
		1196	PL_laststatval = data->laststatval;
		1197	PL_statcache = data->statcache;
		1198	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.22 by root, Sat Aug 11 23:10:56 2001 UTC vs. Revision 1.71 by root, Wed Jan 25 21:43:58 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.22 by root, Sat Aug 11 23:10:56 2001 UTC vs.
Revision 1.71 by root, Wed Jan 25 21:43:58 2006 UTC