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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.16 by root, Wed Jul 25 04:26:55 2001 UTC vs.
Revision 1.70 by root, Mon Dec 26 19:26:52 2005 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		2
		3	#include "libcoro/coro.c"
		4
1	#include "EXTERN.h"	5	#include "EXTERN.h"
2	#include "perl.h"	6	#include "perl.h"
3	#include "XSUB.h"	7	#include "XSUB.h"
4		8
5	#include "libcoro/coro.c"	9	#include "patchlevel.h"
		10
		11	#if PERL_VERSION < 6
		12	# ifndef PL_ppaddr
		13	# define PL_ppaddr ppaddr
		14	# endif
		15	# ifndef call_sv
		16	# define call_sv perl_call_sv
		17	# endif
		18	# ifndef get_sv
		19	# define get_sv perl_get_sv
		20	# endif
		21	# ifndef get_cv
		22	# define get_cv perl_get_cv
		23	# endif
		24	# ifndef IS_PADGV
		25	# define IS_PADGV(v) 0
		26	# endif
		27	# ifndef IS_PADCONST
		28	# define IS_PADCONST(v) 0
		29	# endif
		30	#endif
		31
		32	#include <errno.h>
		33	#include <signal.h>
6		34
7	#ifdef HAVE_MMAP	35	#ifdef HAVE_MMAP
8	# include <unistd.h>	36	# include <unistd.h>
9	# include <sys/mman.h>	37	# include <sys/mman.h>
10	# ifndef MAP_ANON
11	# ifdef MAP_ANONYMOUS	38	# ifndef MAP_ANONYMOUS
12	# define MAP_ANON MAP_ANONYMOUS	39	# ifdef MAP_ANON
		40	# define MAP_ANONYMOUS MAP_ANON
13	# else	41	# else
14	# undef HAVE_MMAP	42	# undef HAVE_MMAP
15	# endif	43	# endif
16	# endif	44	# endif
17	#endif	45	#endif
18		46
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"	47	#define SUB_INIT "Coro::State::initialize"
37	#define UCORO_STATE "_coro_state"	48	#define UCORO_STATE "_coro_state"
38		49
39	/* 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
40	* 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
41	* and should be unique. */	52	* and should be unique. */
42	#define dSTACKLEVEL void *stacklevel = &stacklevel	53	#define dSTACKLEVEL void *stacklevel = &stacklevel
43		54
		55	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		56
44	#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 */
45		76
46	/* 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... */
47	typedef struct {	78	typedef struct {
48	int refcnt; /* pointer reference counter */	79	int refcnt; /* pointer reference counter */
49	int usecnt; /* shared by how many coroutines */	80	int usecnt; /* shared by how many coroutines */
53		84
54	void *sptr;	85	void *sptr;
55	long ssize; /* positive == mmap, otherwise malloc */	86	long ssize; /* positive == mmap, otherwise malloc */
56	} coro_stack;	87	} coro_stack;
57		88
58	static coro_stack main_stack = { 1, 0, 0 };
59
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
…		…
68	SV *defsv;	100	SV *defsv;
69	SV *errsv;	101	SV *errsv;
70		102
71	/* saved global state not related to stacks */	103	/* saved global state not related to stacks */
72	U8 dowarn;	104	U8 dowarn;
		105	I32 in_eval;
73		106
74	/* the stacks and related info (callchain etc..) */	107	/* the stacks and related info (callchain etc..) */
75	PERL_SI *curstackinfo;	108	PERL_SI *curstackinfo;
76	AV *curstack;	109	AV *curstack;
77	AV *mainstack;	110	AV *mainstack;
78	SV **stack_sp;	111	SV **stack_sp;
79	OP *op;	112	OP *op;
80	SV **curpad;	113	SV **curpad;
		114	AV *comppad;
		115	CV *compcv;
81	SV **stack_base;	116	SV **stack_base;
82	SV **stack_max;	117	SV **stack_max;
83	SV **tmps_stack;	118	SV **tmps_stack;
84	I32 tmps_floor;	119	I32 tmps_floor;
85	I32 tmps_ix;	120	I32 tmps_ix;
…		…
94	I32 savestack_ix;	129	I32 savestack_ix;
95	I32 savestack_max;	130	I32 savestack_max;
96	OP **retstack;	131	OP **retstack;
97	I32 retstack_ix;	132	I32 retstack_ix;
98	I32 retstack_max;	133	I32 retstack_max;
		134	PMOP *curpm;
99	COP *curcop;	135	COP *curcop;
100	JMPENV start_env;
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);
…		…
147	AvFLAGS (av) = AVf_REIFY;	176	AvFLAGS (av) = AVf_REIFY;
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;
		326	PL_in_eval = c->in_eval;
295		327
296	PL_curstackinfo = c->curstackinfo;	328	PL_curstackinfo = c->curstackinfo;
297	PL_curstack = c->curstack;	329	PL_curstack = c->curstack;
298	PL_mainstack = c->mainstack;	330	PL_mainstack = c->mainstack;
299	PL_stack_sp = c->stack_sp;	331	PL_stack_sp = c->stack_sp;
300	PL_op = c->op;	332	PL_op = c->op;
301	PL_curpad = c->curpad;	333	PL_curpad = c->curpad;
		334	PL_comppad = c->comppad;
		335	PL_compcv = c->compcv;
302	PL_stack_base = c->stack_base;	336	PL_stack_base = c->stack_base;
303	PL_stack_max = c->stack_max;	337	PL_stack_max = c->stack_max;
304	PL_tmps_stack = c->tmps_stack;	338	PL_tmps_stack = c->tmps_stack;
305	PL_tmps_floor = c->tmps_floor;	339	PL_tmps_floor = c->tmps_floor;
306	PL_tmps_ix = c->tmps_ix;	340	PL_tmps_ix = c->tmps_ix;
…		…
315	PL_savestack_ix = c->savestack_ix;	349	PL_savestack_ix = c->savestack_ix;
316	PL_savestack_max = c->savestack_max;	350	PL_savestack_max = c->savestack_max;
317	PL_retstack = c->retstack;	351	PL_retstack = c->retstack;
318	PL_retstack_ix = c->retstack_ix;	352	PL_retstack_ix = c->retstack_ix;
319	PL_retstack_max = c->retstack_max;	353	PL_retstack_max = c->retstack_max;
		354	PL_curpm = c->curpm;
320	PL_curcop = c->curcop;	355	PL_curcop = c->curcop;
321	PL_start_env = c->start_env;
322	PL_top_env = c->top_env;	356	PL_top_env = c->top_env;
323		357
324	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	358	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
325	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	359	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
326	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	360	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
334	{	368	{
335	AV padlist = (AV )POPs;	369	AV padlist = (AV )POPs;
336		370
337	if (padlist)	371	if (padlist)
338	{	372	{
339	put_padlist (cv); /* mark this padlist as available */	373	put_padlist (aTHX_ cv); /* mark this padlist as available */
340	CvPADLIST(cv) = padlist;	374	CvPADLIST(cv) = padlist;
341	#ifdef USE_THREADS
342	/CvOWNER(cv) = (struct perl_thread )POPs;*/
343	#endif
344	}	375	}
345		376
346	++CvDEPTH(cv);	377	++CvDEPTH(cv);
347	}	378	}
348		379
…		…
366		397
367	PUSHs (Nullsv);	398	PUSHs (Nullsv);
368	/* this loop was inspired by pp_caller */	399	/* this loop was inspired by pp_caller */
369	for (;;)	400	for (;;)
370	{	401	{
371	do	402	while (cxix >= 0)
372	{	403	{
373	PERL_CONTEXT *cx = &ccstk[cxix--];	404	PERL_CONTEXT *cx = &ccstk[cxix--];
374		405
375	if (CxTYPE(cx) == CXt_SUB)	406	if (CxTYPE(cx) == CXt_SUB)
376	{	407	{
377	CV *cv = cx->blk_sub.cv;	408	CV *cv = cx->blk_sub.cv;
378	if (CvDEPTH(cv))	409	if (CvDEPTH(cv))
379	{	410	{
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);	411	EXTEND (SP, CvDEPTH(cv)*2);
386		412
387	while (--CvDEPTH(cv))	413	while (--CvDEPTH(cv))
388	{	414	{
389	/* this tells the restore code to increment CvDEPTH */	415	/* this tells the restore code to increment CvDEPTH */
…		…
392	}	418	}
393		419
394	PUSHs ((SV *)CvPADLIST(cv));	420	PUSHs ((SV *)CvPADLIST(cv));
395	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
396		422
397	get_padlist (cv); /* this is a monster */	423	get_padlist (aTHX_ cv); /* this is a monster */
398	}	424	}
399	}	425	}
		426	#ifdef CXt_FORMAT
400	else if (CxTYPE(cx) == CXt_FORMAT)	427	else if (CxTYPE(cx) == CXt_FORMAT)
401	{	428	{
402	/* I never used formats, so how should I know how these are implemented? */	429	/* I never used formats, so how should I know how these are implemented? */
403	/* my bold guess is as a simple, plain sub... */	430	/* my bold guess is as a simple, plain sub... */
404	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	431	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
405	}	432	}
		433	#endif
406	}	434	}
407	while (cxix >= 0);
408		435
409	if (top_si->si_type == PERLSI_MAIN)	436	if (top_si->si_type == PERLSI_MAIN)
410	break;	437	break;
411		438
412	top_si = top_si->si_prev;	439	top_si = top_si->si_prev;
…		…
419		446
420	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	447	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
421	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	448	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
422	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	449	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
423		450
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;	451	c->dowarn = PL_dowarn;
		452	c->in_eval = PL_in_eval;
430		453
431	c->curstackinfo = PL_curstackinfo;	454	c->curstackinfo = PL_curstackinfo;
432	c->curstack = PL_curstack;	455	c->curstack = PL_curstack;
433	c->mainstack = PL_mainstack;	456	c->mainstack = PL_mainstack;
434	c->stack_sp = PL_stack_sp;	457	c->stack_sp = PL_stack_sp;
435	c->op = PL_op;	458	c->op = PL_op;
436	c->curpad = PL_curpad;	459	c->curpad = PL_curpad;
		460	c->comppad = PL_comppad;
		461	c->compcv = PL_compcv;
437	c->stack_base = PL_stack_base;	462	c->stack_base = PL_stack_base;
438	c->stack_max = PL_stack_max;	463	c->stack_max = PL_stack_max;
439	c->tmps_stack = PL_tmps_stack;	464	c->tmps_stack = PL_tmps_stack;
440	c->tmps_floor = PL_tmps_floor;	465	c->tmps_floor = PL_tmps_floor;
441	c->tmps_ix = PL_tmps_ix;	466	c->tmps_ix = PL_tmps_ix;
…		…
450	c->savestack_ix = PL_savestack_ix;	475	c->savestack_ix = PL_savestack_ix;
451	c->savestack_max = PL_savestack_max;	476	c->savestack_max = PL_savestack_max;
452	c->retstack = PL_retstack;	477	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;	478	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;	479	c->retstack_max = PL_retstack_max;
		480	c->curpm = PL_curpm;
455	c->curcop = PL_curcop;	481	c->curcop = PL_curcop;
456	c->start_env = PL_start_env;
457	c->top_env = PL_top_env;	482	c->top_env = PL_top_env;
458	}	483	}
459		484
460	/*	485	/*
461	* allocate various perl stacks. This is an exact copy	486	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	487	* of perl.c:init_stacks, except that it uses less memory
463	* on the assumption that coroutines do not usually need	488	* on the (sometimes correct) assumption that coroutines do
464	* a lot of stackspace.	489	* not usually need a lot of stackspace.
465	*/	490	*/
466	STATIC void	491	STATIC void
467	coro_init_stacks (pTHX)	492	coro_init_stacks (pTHX)
468	{	493	{
		494	LOCK;
		495
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	496	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	497	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	498	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	499	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		500
…		…
482		509
483	New(54,PL_markstack,16,I32);	510	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	511	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	512	PL_markstack_max = PL_markstack + 16;
486		513
		514	#ifdef SET_MARK_OFFSET
487	SET_MARK_OFFSET;	515	SET_MARK_OFFSET;
		516	#endif
488		517
489	New(54,PL_scopestack,16,I32);	518	New(54,PL_scopestack,16,I32);
490	PL_scopestack_ix = 0;	519	PL_scopestack_ix = 0;
491	PL_scopestack_max = 16;	520	PL_scopestack_max = 16;
492		521
…		…
495	PL_savestack_max = 96;	524	PL_savestack_max = 96;
496		525
497	New(54,PL_retstack,8,OP*);	526	New(54,PL_retstack,8,OP*);
498	PL_retstack_ix = 0;	527	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	528	PL_retstack_max = 8;
		529
		530	UNLOCK;
500	}	531	}
501		532
502	/*	533	/*
503	* destroy the stacks, the callchain etc...	534	* destroy the stacks, the callchain etc...
504	* still there is a memleak of 128 bytes...
505	*/	535	*/
506	STATIC void	536	STATIC void
507	destroy_stacks(pTHX)	537	destroy_stacks(pTHX)
508	{	538	{
		539	if (!IN_DESTRUCT)
		540	{
509	/* is this ugly, I ask? */	541	/* is this ugly, I ask? */
510	while (PL_scopestack_ix)	542	LEAVE_SCOPE (0);
511	LEAVE;
512		543
513	/* sure it is, but more important: is it correct?? :/ */	544	/* 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;	545	FREETMPS;
		546
		547	/POPSTACK_TO (PL_mainstack);//D//use/
		548	}
516		549
517	while (PL_curstackinfo->si_next)	550	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	551	PL_curstackinfo = PL_curstackinfo->si_next;
519		552
520	while (PL_curstackinfo)	553	while (PL_curstackinfo)
521	{	554	{
522	PERL_SI *p = PL_curstackinfo->si_prev;	555	PERL_SI *p = PL_curstackinfo->si_prev;
523		556
524	{	557	{ /D//remove/
525	dSP;	558	dSP;
526	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	559	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527	PUTBACK; /* possibly superfluous */	560	PUTBACK; /* possibly superfluous */
528	}	561	}
529		562
530	dounwind(-1);	563	if (!IN_DESTRUCT)
531		564	{
		565	dounwind (-1);/D//remove/
532	SvREFCNT_dec(PL_curstackinfo->si_stack);	566	SvREFCNT_dec (PL_curstackinfo->si_stack);
		567	}
		568
533	Safefree(PL_curstackinfo->si_cxstack);	569	Safefree (PL_curstackinfo->si_cxstack);
534	Safefree(PL_curstackinfo);	570	Safefree (PL_curstackinfo);
535	PL_curstackinfo = p;	571	PL_curstackinfo = p;
536	}	572	}
537		573
538	Safefree(PL_tmps_stack);	574	Safefree (PL_tmps_stack);
539	Safefree(PL_markstack);	575	Safefree (PL_markstack);
540	Safefree(PL_scopestack);	576	Safefree (PL_scopestack);
541	Safefree(PL_savestack);	577	Safefree (PL_savestack);
542	Safefree(PL_retstack);	578	Safefree (PL_retstack);
543	}	579	}
544		580
545	static void	581	static void
546	allocate_stack (Coro__State ctx, int alloc)	582	allocate_stack (Coro__State ctx, int alloc)
547	{	583	{
…		…
550	New (0, stack, 1, coro_stack);	586	New (0, stack, 1, coro_stack);
551		587
552	stack->refcnt = 1;	588	stack->refcnt = 1;
553	stack->usecnt = 1;	589	stack->usecnt = 1;
554	stack->gencnt = ctx->gencnt = 0;	590	stack->gencnt = ctx->gencnt = 0;
		591
555	if (alloc)	592	if (alloc)
556	{	593	{
557	#ifdef HAVE_MMAP	594	#if HAVE_MMAP
558	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write */	595	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);	596	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
560	if (stack->sptr == (void *)-1)	597	if (stack->sptr == (void *)-1)
561	#endif	598	#endif
562	{	599	{
563	/FIXME//D//* reasonable stack size! */	600	/FIXME//D//* reasonable stack size! */
564	stack->ssize = -4096 * sizeof (long);	601	stack->ssize = - (STACKSIZE * sizeof (long));
565	New (0, stack->sptr, 4096, long);	602	New (0, stack->sptr, STACKSIZE, long);
566	}	603	}
567	}	604	}
568	else	605	else
569	stack->sptr = 0;	606	stack->sptr = 0;
570		607
…		…
584	{	621	{
585	#ifdef HAVE_MMAP	622	#ifdef HAVE_MMAP
586	if (stack->ssize > 0 && stack->sptr)	623	if (stack->ssize > 0 && stack->sptr)
587	munmap (stack->sptr, stack->ssize);	624	munmap (stack->sptr, stack->ssize);
588	else	625	else
589	#else	626	#endif
590	Safefree (stack->sptr);	627	Safefree (stack->sptr);
591	#endif	628
592	Safefree (stack);	629	Safefree (stack);
593	}	630	}
594	else if (ctx->gencnt == stack->gencnt)	631	else if (ctx->gencnt == stack->gencnt)
595	--stack->usecnt;	632	--stack->usecnt;
596	}	633	}
…		…
600	setup_coro (void *arg)	637	setup_coro (void *arg)
601	{	638	{
602	/*	639	/*
603	* emulate part of the perl startup here.	640	* emulate part of the perl startup here.
604	*/	641	*/
		642	dTHX;
605	dSP;	643	dSP;
606	Coro__State ctx = (Coro__State)arg;	644	Coro__State ctx = (Coro__State)arg;
607	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	645	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
608		646
609	coro_init_stacks (aTHX);	647	coro_init_stacks (aTHX);
610	JMPENV_BOOTSTRAP;	648	/PL_curcop = 0;/
		649	/PL_in_eval = PL_in_eval;/ /* inherit */
		650	SvREFCNT_dec (GvAV (PL_defgv));
		651	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		652
611	SPAGAIN;	653	SPAGAIN;
612
613	/PL_curcop = 0;/
614	SvREFCNT_dec (GvAV (PL_defgv));
615	GvAV (PL_defgv) = ctx->args;
616		654
617	if (ctx->stack)	655	if (ctx->stack)
618	{	656	{
619	ctx->cursp = 0;	657	ctx->cursp = 0;
620		658
621	PUSHMARK(SP);	659	PUSHMARK(SP);
622	PUTBACK;	660	PUTBACK;
623	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	661	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		662
		663	if (SvTRUE (ERRSV))
		664	croak (NULL);
		665	else
624	croak ("FATAL: CCTXT coroutine returned!");	666	croak ("FATAL: CCTXT coroutine returned!");
625	}	667	}
626	else	668	else
627	{	669	{
628	UNOP myop;	670	UNOP myop;
629		671
…		…
641	* that doesn't matter, though, since it is only	683	* that doesn't matter, though, since it is only
642	* pp_nextstate and we never return...	684	* pp_nextstate and we never return...
643	* ah yes, and I don't care anyways ;)	685	* ah yes, and I don't care anyways ;)
644	*/	686	*/
645	PUTBACK;	687	PUTBACK;
646	PL_op = pp_entersub();	688	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
647	SPAGAIN;	689	SPAGAIN;
648		690
649	ENTER; /* necessary e.g. for dounwind */	691	ENTER; /* necessary e.g. for dounwind */
650	}	692	}
651	}	693	}
…		…
654	continue_coro (void *arg)	696	continue_coro (void *arg)
655	{	697	{
656	/*	698	/*
657	* this is a _very_ stripped down perl interpreter ;)	699	* this is a _very_ stripped down perl interpreter ;)
658	*/	700	*/
		701	dTHX;
659	Coro__State ctx = (Coro__State)arg;	702	Coro__State ctx = (Coro__State)arg;
		703	JMPENV coro_start_env;
		704
		705	PL_top_env = &ctx->start_env;
660		706
661	ctx->cursp = 0;	707	ctx->cursp = 0;
662	PL_op = PL_op->op_next;	708	PL_op = PL_op->op_next;
663	CALLRUNOPS(aTHX);	709	CALLRUNOPS(aTHX);
664	/NORETURN/	710
665	abort ();	711	abort ();
666	}	712	}
667		713
668	STATIC void	714	STATIC void
669	transfer(pTHX_ struct coro prev, struct coro next, int flags)	715	transfer (pTHX_ struct coro prev, struct coro next, int flags)
670	{	716	{
671	dSP;
672	dSTACKLEVEL;	717	dSTACKLEVEL;
673		718
674	if (prev != next)	719	if (prev != next)
675	{	720	{
676	if (next->mainstack)	721	if (next->mainstack)
677	{	722	{
		723	LOCK;
678	SAVE (prev, flags);	724	SAVE (prev, flags);
679	LOAD (next);	725	LOAD (next);
		726	UNLOCK;
680		727
681	/* mark this state as in-use */	728	/* mark this state as in-use */
682	next->mainstack = 0;	729	next->mainstack = 0;
683	next->tmps_ix = -2;	730	next->tmps_ix = -2;
684		731
…		…
703	continue_coro, (void *)next,	750	continue_coro, (void *)next,
704	next->stack->sptr, labs (next->stack->ssize));	751	next->stack->sptr, labs (next->stack->ssize));
705	}	752	}
706		753
707	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		755	prev->cursp = stacklevel;
		756	/* don't add any code here */
708	}	757	}
709		758	else
		759	next->cursp = stacklevel;
710	}	760	}
711	else if (next->tmps_ix == -2)	761	else if (next->tmps_ix == -2)
712	croak ("tried to transfer to running coroutine");	762	croak ("tried to transfer to running coroutine");
713	else	763	else
714	{	764	{
		765	LOCK;
715	SAVE (prev, -1); /* first get rid of the old state */	766	SAVE (prev, -1); /* first get rid of the old state */
		767	UNLOCK;
716		768
717	if (flags & TRANSFER_SAVE_CCTXT)	769	if (flags & TRANSFER_SAVE_CCTXT)
718	{	770	{
719	if (!prev->stack)	771	if (!prev->stack)
720	allocate_stack (prev, 0);	772	allocate_stack (prev, 0);
721		773
722	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	774	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
723	{	775	{
		776	PL_top_env = &next->start_env;
		777
724	setup_coro (next);	778	setup_coro (next);
		779	next->cursp = stacklevel;
725		780
726	prev->stack->refcnt++;	781	prev->stack->refcnt++;
727	prev->stack->usecnt++;	782	prev->stack->usecnt++;
728	next->stack = prev->stack;	783	next->stack = prev->stack;
729	next->gencnt = prev->gencnt;	784	next->gencnt = prev->gencnt;
730	}	785	}
731	else	786	else
732	{	787	{
		788	assert (!next->stack);
733	allocate_stack (next, 1);	789	allocate_stack (next, 1);
734	coro_create (&(next->stack->cctx),	790	coro_create (&(next->stack->cctx),
735	setup_coro, (void *)next,	791	setup_coro, (void *)next,
736	next->stack->sptr, labs (next->stack->ssize));	792	next->stack->sptr, labs (next->stack->ssize));
737	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	793	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		794	prev->cursp = stacklevel;
		795	/* don't add any code here */
738	}	796	}
739	}	797	}
740	else	798	else
		799	{
741	setup_coro (next);	800	setup_coro (next);
		801	next->cursp = stacklevel;
		802	}
742	}	803	}
743	}	804	}
744		805
745	next->cursp = stacklevel;	806	LOCK;
		807	if (coro_mortal)
		808	{
		809	SvREFCNT_dec (coro_mortal);
		810	coro_mortal = 0;
		811	}
		812	UNLOCK;
		813	}
		814
		815	#define SV_CORO(sv,func) \
		816	do { \
		817	if (SvROK (sv)) \
		818	sv = SvRV (sv); \
		819	\
		820	if (SvTYPE (sv) == SVt_PVHV) \
		821	{ \
		822	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		823	\
		824	if (!he) \
		825	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		826	\
		827	(sv) = SvRV (HeVAL(he)); \
		828	} \
		829	\
		830	/* must also be changed inside Coro::Cont::yield */ \
		831	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		832	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		833	\
		834	} while(0)
		835
		836	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		837
		838	static void
		839	api_transfer(pTHX_ SV prev, SV next, int flags)
		840	{
		841	SV_CORO (prev, "Coro::transfer");
		842	SV_CORO (next, "Coro::transfer");
		843
		844	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		845	}
		846
		847	/ Coro ******************************************************************/
		848
		849	#define PRIO_MAX 3
		850	#define PRIO_HIGH 1
		851	#define PRIO_NORMAL 0
		852	#define PRIO_LOW -1
		853	#define PRIO_IDLE -3
		854	#define PRIO_MIN -4
		855
		856	/* for Coro.pm */
		857	static GV coro_current, coro_idle;
		858	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		859	static int coro_nready;
		860
		861	static void
		862	coro_enq (pTHX_ SV *sv)
		863	{
		864	if (SvTYPE (sv) == SVt_PVHV)
		865	{
		866	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		867	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		868
		869	prio = prio > PRIO_MAX ? PRIO_MAX
		870	: prio < PRIO_MIN ? PRIO_MIN
		871	: prio;
		872
		873	av_push (coro_ready [prio - PRIO_MIN], sv);
		874	coro_nready++;
		875
		876	return;
		877	}
		878
		879	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		880	}
		881
		882	static SV *
		883	coro_deq (pTHX_ int min_prio)
		884	{
		885	int prio = PRIO_MAX - PRIO_MIN;
		886
		887	min_prio -= PRIO_MIN;
		888	if (min_prio < 0)
		889	min_prio = 0;
		890
		891	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		892	if (av_len (coro_ready[prio]) >= 0)
		893	{
		894	coro_nready--;
		895	return av_shift (coro_ready[prio]);
		896	}
		897
		898	return 0;
		899	}
		900
		901	static void
		902	api_ready (SV *coro)
		903	{
		904	dTHX;
		905
		906	if (SvROK (coro))
		907	coro = SvRV (coro);
		908
		909	LOCK;
		910	coro_enq (aTHX_ SvREFCNT_inc (coro));
		911	UNLOCK;
		912	}
		913
		914	static void
		915	api_schedule (void)
		916	{
		917	dTHX;
		918
		919	SV prev, next;
		920
		921	LOCK;
		922
		923	prev = SvRV (GvSV (coro_current));
		924	next = coro_deq (aTHX_ PRIO_MIN);
		925
		926	if (!next)
		927	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		928
		929	/* free this only after the transfer */
		930	coro_mortal = prev;
		931	SV_CORO (prev, "Coro::schedule");
		932
		933	SvRV (GvSV (coro_current)) = next;
		934
		935	SV_CORO (next, "Coro::schedule");
		936
		937	UNLOCK;
		938
		939	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		940	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		941	}
		942
		943	static void
		944	api_cede (void)
		945	{
		946	dTHX;
		947
		948	LOCK;
		949	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		950	UNLOCK;
		951
		952	api_schedule ();
746	}	953	}
747		954
748	MODULE = Coro::State PACKAGE = Coro::State	955	MODULE = Coro::State PACKAGE = Coro::State
749		956
750	PROTOTYPES: ENABLE	957	PROTOTYPES: ENABLE
751		958
752	BOOT:	959	BOOT:
753	{ /* {} necessary for stoopid perl-5.6.x */	960	{ /* {} necessary for stoopid perl-5.6.x */
		961	#ifdef USE_ITHREADS
		962	MUTEX_INIT (&coro_mutex);
		963	#endif
		964
754	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	965	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
755	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	966	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
756	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	967	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
757		968
758	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	969	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
759	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	970	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
760	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	971	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
761	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	972	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
762		973
763	if (!padlist_cache)
764	padlist_cache = newHV ();
765
766	main_mainstack = PL_mainstack;	974	main_mainstack = PL_mainstack;
		975
		976	coroapi.ver = CORO_API_VERSION;
		977	coroapi.transfer = api_transfer;
767	}	978	}
768		979
769	Coro::State	980	Coro::State
770	_newprocess(args)	981	_newprocess(args)
771	SV * args	982	SV * args
…		…
774	Coro__State coro;	985	Coro__State coro;
775		986
776	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	987	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
777	croak ("Coro::State::_newprocess expects an arrayref");	988	croak ("Coro::State::_newprocess expects an arrayref");
778		989
779	New (0, coro, 1, struct coro);	990	Newz (0, coro, 1, struct coro);
780		991
781	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	992	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
782	coro->mainstack = 0; /* actual work is done inside transfer */	993	/coro->mainstack = 0; //actual work is done inside transfer /
783	coro->stack = 0;	994	/coro->stack = 0;/
		995
		996	/* same as JMPENV_BOOTSTRAP */
		997	/* we might be able to recycle start_env, but safe is safe */
		998	/Zero(&coro->start_env, 1, JMPENV);/
		999	coro->start_env.je_ret = -1;
		1000	coro->start_env.je_mustcatch = TRUE;
784		1001
785	RETVAL = coro;	1002	RETVAL = coro;
786	OUTPUT:	1003	OUTPUT:
787	RETVAL	1004	RETVAL
788		1005
789	void	1006	void
790	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	1007	transfer(prev, next, flags)
791	Coro::State_or_hashref prev	1008	SV *prev
792	Coro::State_or_hashref next	1009	SV *next
793	int flags	1010	int flags
794	PROTOTYPE: @	1011	PROTOTYPE: @
795	CODE:	1012	CODE:
		1013	PUTBACK;
		1014	SV_CORO (next, "Coro::transfer");
		1015	SV_CORO (prev, "Coro::transfer");
796	transfer (aTHX_ prev, next, flags);	1016	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		1017	SPAGAIN;
797		1018
798	void	1019	void
799	DESTROY(coro)	1020	DESTROY(coro)
800	Coro::State coro	1021	Coro::State coro
801	CODE:	1022	CODE:
802		1023
803	if (coro->mainstack && coro->mainstack != main_mainstack)	1024	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	1025	{
805	struct coro temp;	1026	struct coro temp;
806		1027
		1028	PUTBACK;
807	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1029	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
808	LOAD(aTHX_ coro);	1030	LOAD (aTHX_ coro);
		1031	SPAGAIN;
809		1032
810	destroy_stacks (aTHX);	1033	destroy_stacks (aTHX);
811		1034
812	LOAD((&temp)); /* this will get rid of defsv etc.. */	1035	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1036	SPAGAIN;
813		1037
814	coro->mainstack = 0;	1038	coro->mainstack = 0;
815	}	1039	}
816		1040
817	deallocate_stack (coro);	1041	deallocate_stack (coro);
818		1042	SvREFCNT_dec (coro->args);
819	Safefree (coro);	1043	Safefree (coro);
820		1044
821	void	1045	void
822	flush()	1046	_exit(code)
		1047	int code
		1048	PROTOTYPE: $
823	CODE:	1049	CODE:
824	#ifdef MAY_FLUSH	1050	_exit (code);
825	flush_padlist_cache ();
826	#endif
827		1051
828	MODULE = Coro::State PACKAGE = Coro::Cont	1052	MODULE = Coro::State PACKAGE = Coro::Cont
829		1053
830	# this is slightly dirty	1054	# this is slightly dirty (should expose a c-level api)
831		1055
832	void	1056	void
833	yield(...)	1057	yield(...)
834	PROTOTYPE: @	1058	PROTOTYPE: @
835	CODE:	1059	CODE:
836	static SV *returnstk;	1060	SV *yieldstack;
837	SV *sv;	1061	SV *sv;
838	AV *defav = GvAV (PL_defgv);	1062	AV *defav = GvAV (PL_defgv);
839	struct coro prev, next;	1063	struct coro prev, next;
840		1064
841	if (!returnstk)	1065	yieldstack = *hv_fetch (
842	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1066	(HV *)SvRV (GvSV (coro_current)),
		1067	"yieldstack", sizeof ("yieldstack") - 1,
		1068	0
		1069	);
843		1070
844	/* set up @_ -- ugly */	1071	/* set up @_ -- ugly */
845	av_clear (defav);	1072	av_clear (defav);
846	av_fill (defav, items - 1);	1073	av_fill (defav, items - 1);
847	while (items--)	1074	while (items--)
848	av_store (defav, items, SvREFCNT_inc (ST(items)));	1075	av_store (defav, items, SvREFCNT_inc (ST(items)));
849		1076
850	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
851	sv = av_pop ((AV *)SvRV (returnstk));	1077	sv = av_pop ((AV *)SvRV (yieldstack));
852	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1078	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
853	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1079	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
854	SvREFCNT_dec (sv);	1080	SvREFCNT_dec (sv);
855		1081
856	transfer(aTHX_ prev, next, 0);	1082	transfer (aTHX_ prev, next, 0);
857		1083
		1084	MODULE = Coro::State PACKAGE = Coro
		1085
		1086	# this is slightly dirty (should expose a c-level api)
		1087
		1088	BOOT:
		1089	{
		1090	int i;
		1091	HV *stash = gv_stashpv ("Coro", TRUE);
		1092
		1093	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1094	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1095	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1096	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1097	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1098	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1099
		1100	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1101	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1102
		1103	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1104	coro_ready[i] = newAV ();
		1105
		1106	{
		1107	SV *sv = perl_get_sv("Coro::API", 1);
		1108
		1109	coroapi.schedule = api_schedule;
		1110	coroapi.cede = api_cede;
		1111	coroapi.ready = api_ready;
		1112	coroapi.nready = &coro_nready;
		1113	coroapi.current = coro_current;
		1114
		1115	GCoroAPI = &coroapi;
		1116	sv_setiv(sv, (IV)&coroapi);
		1117	SvREADONLY_on(sv);
		1118	}
		1119	}
		1120
		1121	#if !PERL_MICRO
		1122
		1123	void
		1124	ready(self)
		1125	SV * self
		1126	PROTOTYPE: $
		1127	CODE:
		1128	api_ready (self);
		1129
		1130	#endif
		1131
		1132	int
		1133	nready(...)
		1134	PROTOTYPE:
		1135	CODE:
		1136	RETVAL = coro_nready;
		1137	OUTPUT:
		1138	RETVAL
		1139
		1140	void
		1141	schedule(...)
		1142	PROTOTYPE:
		1143	CODE:
		1144	api_schedule ();
		1145
		1146	void
		1147	cede(...)
		1148	PROTOTYPE:
		1149	CODE:
		1150	api_cede ();
		1151
		1152	# and these are hacks
		1153	SV *
		1154	_aio_get_state ()
		1155	CODE:
		1156	{
		1157	struct {
		1158	int errorno;
		1159	int laststype;
		1160	int laststatval;
		1161	Stat_t statcache;
		1162	} data;
		1163
		1164	data.errorno = errno;
		1165	data.laststype = PL_laststype;
		1166	data.laststatval = PL_laststatval;
		1167	data.statcache = PL_statcache;
		1168
		1169	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1170	}
		1171	OUTPUT:
		1172	RETVAL
		1173
		1174	void
		1175	_aio_set_state (char *data_)
		1176	PROTOTYPE: $
		1177	CODE:
		1178	{
		1179	struct {
		1180	int errorno;
		1181	int laststype;
		1182	int laststatval;
		1183	Stat_t statcache;
		1184	} data = (void )data_;
		1185
		1186	errno = data->errorno;
		1187	PL_laststype = data->laststype;
		1188	PL_laststatval = data->laststatval;
		1189	PL_statcache = data->statcache;
		1190	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.16 by root, Wed Jul 25 04:26:55 2001 UTC vs. Revision 1.70 by root, Mon Dec 26 19:26:52 2005 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.16 by root, Wed Jul 25 04:26:55 2001 UTC vs.
Revision 1.70 by root, Mon Dec 26 19:26:52 2005 UTC