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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.64 by root, Mon Mar 21 15:06:51 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 PATCHLEVEL < 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 <signal.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>
		37	# ifndef MAP_ANONYMOUS
		38	# ifdef MAP_ANON
		39	# define MAP_ANONYMOUS MAP_ANON
		40	# else
		41	# undef HAVE_MMAP
		42	# endif
		43	# endif
10	#endif	44	#endif
11
12	#define MAY_FLUSH /* increases codesize */
13
14	/* perl-related */
15	#define TRANSFER_SAVE_DEFAV 0x00000001
16	#define TRANSFER_SAVE_DEFSV 0x00000002
17	#define TRANSFER_SAVE_ERRSV 0x00000004
18	/* c-related */
19	#define TRANSFER_SAVE_CCTXT 0x00000008
20	#ifdef CORO_LAZY_STACK
21	# define TRANSFER_LAZY_STACK 0x00000010
22	#else
23	# define TRANSFER_LAZY_STACK 0x00000000
24	#endif
25
26	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
27	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
28		45
29	#define SUB_INIT "Coro::State::initialize"	46	#define SUB_INIT "Coro::State::initialize"
30	#define UCORO_STATE "_coro_state"	47	#define UCORO_STATE "_coro_state"
31		48
32	/* 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
33	* 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
34	* and should be unique. */	51	* and should be unique. */
35	#define dSTACKLEVEL void *stacklevel = &stacklevel	52	#define dSTACKLEVEL void *stacklevel = &stacklevel
36		53
		54	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		55
37	#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 0
		66	# define UNLOCK 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 */
38		75
39	/* 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... */
40	typedef struct {	77	typedef struct {
41	int refcnt; /* pointer reference counter */	78	int refcnt; /* pointer reference counter */
42	int usecnt; /* shared by how many coroutines */	79	int usecnt; /* shared by how many coroutines */
46		83
47	void *sptr;	84	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	85	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;	86	} coro_stack;
50		87
51	static coro_stack main_stack = { 1, 0, 0 };
52
53	struct coro {	88	struct coro {
		89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		90	JMPENV start_env;
		91
54	/* the optional C context */	92	/* the optional C context */
55	coro_stack *stack;	93	coro_stack *stack;
56	void *cursp;	94	void *cursp;
57	int gencnt;	95	int gencnt;
58		96
…		…
61	SV *defsv;	99	SV *defsv;
62	SV *errsv;	100	SV *errsv;
63		101
64	/* saved global state not related to stacks */	102	/* saved global state not related to stacks */
65	U8 dowarn;	103	U8 dowarn;
		104	I32 in_eval;
66		105
67	/* the stacks and related info (callchain etc..) */	106	/* the stacks and related info (callchain etc..) */
68	PERL_SI *curstackinfo;	107	PERL_SI *curstackinfo;
69	AV *curstack;	108	AV *curstack;
70	AV *mainstack;	109	AV *mainstack;
71	SV **stack_sp;	110	SV **stack_sp;
72	OP *op;	111	OP *op;
73	SV **curpad;	112	SV **curpad;
		113	AV *comppad;
		114	CV *compcv;
74	SV **stack_base;	115	SV **stack_base;
75	SV **stack_max;	116	SV **stack_max;
76	SV **tmps_stack;	117	SV **tmps_stack;
77	I32 tmps_floor;	118	I32 tmps_floor;
78	I32 tmps_ix;	119	I32 tmps_ix;
…		…
88	I32 savestack_max;	129	I32 savestack_max;
89	OP **retstack;	130	OP **retstack;
90	I32 retstack_ix;	131	I32 retstack_ix;
91	I32 retstack_max;	132	I32 retstack_max;
92	COP *curcop;	133	COP *curcop;
93	JMPENV start_env;
94	JMPENV *top_env;	134	JMPENV *top_env;
95		135
96	/* data associated with this coroutine (initial args) */	136	/* data associated with this coroutine (initial args) */
97	AV *args;	137	AV *args;
98	};	138	};
99		139
100	typedef struct coro *Coro__State;	140	typedef struct coro *Coro__State;
101	typedef struct coro *Coro__State_or_hashref;	141	typedef struct coro *Coro__State_or_hashref;
102		142
103	static AV main_mainstack; / used to differentiate between $main and others */
104	static HV *coro_state_stash;
105	static SV *ucoro_state_sv;
106	static U32 ucoro_state_hash;
107	static HV *padlist_cache;
108
109	/* mostly copied from op.c:cv_clone2 */	143	/* mostly copied from op.c:cv_clone2 */
110	STATIC AV *	144	STATIC AV *
111	clone_padlist (AV *protopadlist)	145	clone_padlist (pTHX_ AV *protopadlist)
112	{	146	{
113	AV *av;	147	AV *av;
114	I32 ix;	148	I32 ix;
115	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	149	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
116	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	150	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
140	AvFLAGS (av) = AVf_REIFY;	174	AvFLAGS (av) = AVf_REIFY;
141		175
142	for (ix = fpad; ix > 0; ix--)	176	for (ix = fpad; ix > 0; ix--)
143	{	177	{
144	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	178	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		179
145	if (namesv && namesv != &PL_sv_undef)	180	if (namesv && namesv != &PL_sv_undef)
146	{	181	{
147	char name = SvPVX (namesv); / XXX */	182	char name = SvPVX (namesv); / XXX */
		183
148	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	184	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
149	{ /* lexical from outside? */	185	{ /* lexical from outside? */
150	npad[ix] = SvREFCNT_inc (ppad[ix]);	186	npad[ix] = SvREFCNT_inc (ppad[ix]);
151	}	187	}
152	else	188	else
…		…
158	sv = (SV *) newAV ();	194	sv = (SV *) newAV ();
159	else if (*name == '%')	195	else if (*name == '%')
160	sv = (SV *) newHV ();	196	sv = (SV *) newHV ();
161	else	197	else
162	sv = NEWSV (0, 0);	198	sv = NEWSV (0, 0);
		199
		200	#ifdef SvPADBUSY
163	if (!SvPADBUSY (sv))	201	if (!SvPADBUSY (sv))
		202	#endif
164	SvPADMY_on (sv);	203	SvPADMY_on (sv);
		204
165	npad[ix] = sv;	205	npad[ix] = sv;
166	}	206	}
167	}	207	}
168	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	208	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
169	{	209	{
…		…
198	#endif	238	#endif
199		239
200	return newpadlist;	240	return newpadlist;
201	}	241	}
202		242
203	#ifdef MAY_FLUSH	243	STATIC void
204	STATIC AV *
205	free_padlist (AV *padlist)	244	free_padlist (pTHX_ AV *padlist)
206	{	245	{
207	/* may be during global destruction */	246	/* may be during global destruction */
208	if (SvREFCNT(padlist))	247	if (SvREFCNT (padlist))
209	{	248	{
210	I32 i = AvFILLp(padlist);	249	I32 i = AvFILLp (padlist);
211	while (i >= 0)	250	while (i >= 0)
212	{	251	{
213	SV **svp = av_fetch(padlist, i--, FALSE);	252	SV **svp = av_fetch (padlist, i--, FALSE);
214	SV sv = svp ? svp : Nullsv;
215	if (sv)	253	if (svp)
		254	{
		255	SV *sv;
		256	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
216	SvREFCNT_dec(sv);	257	SvREFCNT_dec (sv);
		258
		259	SvREFCNT_dec (*svp);
		260	}
217	}	261	}
218		262
219	SvREFCNT_dec((SV*)padlist);	263	SvREFCNT_dec ((SV*)padlist);
220	}	264	}
221	}	265	}
222	#endif	266
		267	STATIC int
		268	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		269	{
		270	AV *padlist;
		271	AV av = (AV )mg->mg_obj;
		272
		273	/* casting is fun. */
		274	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		275	free_padlist (aTHX_ padlist);
		276
		277	SvREFCNT_dec (av);
		278	}
		279
		280	#define PERL_MAGIC_coro PERL_MAGIC_ext
		281
		282	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
223		283
224	/* the next two functions merely cache the padlists */	284	/* the next two functions merely cache the padlists */
225	STATIC void	285	STATIC void
226	get_padlist (CV *cv)	286	get_padlist (pTHX_ CV *cv)
227	{	287	{
228	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	288	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
229		289
230	if (he && AvFILLp ((AV )he) >= 0)	290	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
231	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	291	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
232	else	292	else
233	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	293	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
234	}	294	}
235		295
236	STATIC void	296	STATIC void
237	put_padlist (CV *cv)	297	put_padlist (pTHX_ CV *cv)
238	{	298	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	299	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
240		300
241	if (SvTYPE (*he) != SVt_PVAV)	301	if (!mg)
242	{	302	{
243	SvREFCNT_dec (*he);	303	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		304	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		305	mg->mg_virtual = &vtbl_coro;
244	he = (SV )newAV ();	306	mg->mg_obj = (SV *)newAV ();
245	}	307	}
246		308
247	av_push ((AV )he, (SV *)CvPADLIST (cv));	309	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
248	}	310	}
249
250	#ifdef MAY_FLUSH
251	STATIC void
252	flush_padlist_cache ()
253	{
254	HV *hv = padlist_cache;
255	padlist_cache = newHV ();
256
257	if (hv_iterinit (hv))
258	{
259	HE *he;
260	AV *padlist;
261
262	while (!!(he = hv_iternext (hv)))
263	{
264	AV av = (AV )HeVAL(he);
265
266	/* casting is fun. */
267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
268	free_padlist (padlist);
269	}
270	}
271
272	SvREFCNT_dec (hv);
273	}
274	#endif
275		311
276	#define SB do {	312	#define SB do {
277	#define SE } while (0)	313	#define SE } while (0)
278		314
279	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	315	#define LOAD(state) load_state(aTHX_ (state));
280	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	316	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281		317
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	318	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
283		319
284	static void	320	static void
285	load_state(pTHX_ Coro__State c)	321	load_state(pTHX_ Coro__State c)
286	{	322	{
287	PL_dowarn = c->dowarn;	323	PL_dowarn = c->dowarn;
		324	PL_in_eval = c->in_eval;
288		325
289	PL_curstackinfo = c->curstackinfo;	326	PL_curstackinfo = c->curstackinfo;
290	PL_curstack = c->curstack;	327	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;	328	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;	329	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;	330	PL_op = c->op;
294	PL_curpad = c->curpad;	331	PL_curpad = c->curpad;
		332	PL_comppad = c->comppad;
		333	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;	334	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;	335	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;	336	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;	337	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;	338	PL_tmps_ix = c->tmps_ix;
…		…
309	PL_savestack_max = c->savestack_max;	348	PL_savestack_max = c->savestack_max;
310	PL_retstack = c->retstack;	349	PL_retstack = c->retstack;
311	PL_retstack_ix = c->retstack_ix;	350	PL_retstack_ix = c->retstack_ix;
312	PL_retstack_max = c->retstack_max;	351	PL_retstack_max = c->retstack_max;
313	PL_curcop = c->curcop;	352	PL_curcop = c->curcop;
314	PL_start_env = c->start_env;
315	PL_top_env = c->top_env;	353	PL_top_env = c->top_env;
316		354
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	355	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	356	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	357	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
327	{	365	{
328	AV padlist = (AV )POPs;	366	AV padlist = (AV )POPs;
329		367
330	if (padlist)	368	if (padlist)
331	{	369	{
332	put_padlist (cv); /* mark this padlist as available */	370	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvPADLIST(cv) = padlist;	371	CvPADLIST(cv) = padlist;
334	#ifdef USE_THREADS
335	/CvOWNER(cv) = (struct perl_thread )POPs;*/
336	#endif
337	}	372	}
338		373
339	++CvDEPTH(cv);	374	++CvDEPTH(cv);
340	}	375	}
341		376
…		…
359		394
360	PUSHs (Nullsv);	395	PUSHs (Nullsv);
361	/* this loop was inspired by pp_caller */	396	/* this loop was inspired by pp_caller */
362	for (;;)	397	for (;;)
363	{	398	{
364	do	399	while (cxix >= 0)
365	{	400	{
366	PERL_CONTEXT *cx = &ccstk[cxix--];	401	PERL_CONTEXT *cx = &ccstk[cxix--];
367		402
368	if (CxTYPE(cx) == CXt_SUB)	403	if (CxTYPE(cx) == CXt_SUB)
369	{	404	{
370	CV *cv = cx->blk_sub.cv;	405	CV *cv = cx->blk_sub.cv;
371	if (CvDEPTH(cv))	406	if (CvDEPTH(cv))
372	{	407	{
373	#ifdef USE_THREADS
374	/XPUSHs ((SV )CvOWNER(cv));*/
375	/CvOWNER(cv) = 0;/
376	/error must unlock this cv etc.. etc.../
377	#endif
378	EXTEND (SP, CvDEPTH(cv)*2);	408	EXTEND (SP, CvDEPTH(cv)*2);
379		409
380	while (--CvDEPTH(cv))	410	while (--CvDEPTH(cv))
381	{	411	{
382	/* this tells the restore code to increment CvDEPTH */	412	/* this tells the restore code to increment CvDEPTH */
…		…
385	}	415	}
386		416
387	PUSHs ((SV *)CvPADLIST(cv));	417	PUSHs ((SV *)CvPADLIST(cv));
388	PUSHs ((SV *)cv);	418	PUSHs ((SV *)cv);
389		419
390	get_padlist (cv); /* this is a monster */	420	get_padlist (aTHX_ cv); /* this is a monster */
391	}	421	}
392	}	422	}
		423	#ifdef CXt_FORMAT
393	else if (CxTYPE(cx) == CXt_FORMAT)	424	else if (CxTYPE(cx) == CXt_FORMAT)
394	{	425	{
395	/* I never used formats, so how should I know how these are implemented? */	426	/* I never used formats, so how should I know how these are implemented? */
396	/* my bold guess is as a simple, plain sub... */	427	/* my bold guess is as a simple, plain sub... */
397	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	428	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
398	}	429	}
		430	#endif
399	}	431	}
400	while (cxix >= 0);
401		432
402	if (top_si->si_type == PERLSI_MAIN)	433	if (top_si->si_type == PERLSI_MAIN)
403	break;	434	break;
404		435
405	top_si = top_si->si_prev;	436	top_si = top_si->si_prev;
…		…
412		443
413	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	444	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
414	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	445	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
415	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	446	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
416		447
417	/* I have not the slightest idea of why av_reify is necessary */
418	/* but if it's missing the defav contents magically get replaced sometimes */
419	if (c->defav)
420	av_reify (c->defav);
421
422	c->dowarn = PL_dowarn;	448	c->dowarn = PL_dowarn;
		449	c->in_eval = PL_in_eval;
423		450
424	c->curstackinfo = PL_curstackinfo;	451	c->curstackinfo = PL_curstackinfo;
425	c->curstack = PL_curstack;	452	c->curstack = PL_curstack;
426	c->mainstack = PL_mainstack;	453	c->mainstack = PL_mainstack;
427	c->stack_sp = PL_stack_sp;	454	c->stack_sp = PL_stack_sp;
428	c->op = PL_op;	455	c->op = PL_op;
429	c->curpad = PL_curpad;	456	c->curpad = PL_curpad;
		457	c->comppad = PL_comppad;
		458	c->compcv = PL_compcv;
430	c->stack_base = PL_stack_base;	459	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;	460	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;	461	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;	462	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;	463	c->tmps_ix = PL_tmps_ix;
…		…
444	c->savestack_max = PL_savestack_max;	473	c->savestack_max = PL_savestack_max;
445	c->retstack = PL_retstack;	474	c->retstack = PL_retstack;
446	c->retstack_ix = PL_retstack_ix;	475	c->retstack_ix = PL_retstack_ix;
447	c->retstack_max = PL_retstack_max;	476	c->retstack_max = PL_retstack_max;
448	c->curcop = PL_curcop;	477	c->curcop = PL_curcop;
449	c->start_env = PL_start_env;
450	c->top_env = PL_top_env;	478	c->top_env = PL_top_env;
451	}	479	}
452		480
453	/*	481	/*
454	* allocate various perl stacks. This is an exact copy	482	* allocate various perl stacks. This is an exact copy
455	* of perl.c:init_stacks, except that it uses less memory	483	* of perl.c:init_stacks, except that it uses less memory
456	* on the assumption that coroutines do not usually need	484	* on the (sometimes correct) assumption that coroutines do
457	* a lot of stackspace.	485	* not usually need a lot of stackspace.
458	*/	486	*/
459	STATIC void	487	STATIC void
460	coro_init_stacks (pTHX)	488	coro_init_stacks (pTHX)
461	{	489	{
		490	LOCK;
		491
462	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	492	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
463	PL_curstackinfo->si_type = PERLSI_MAIN;	493	PL_curstackinfo->si_type = PERLSI_MAIN;
464	PL_curstack = PL_curstackinfo->si_stack;	494	PL_curstack = PL_curstackinfo->si_stack;
465	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	495	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
466		496
…		…
475		505
476	New(54,PL_markstack,16,I32);	506	New(54,PL_markstack,16,I32);
477	PL_markstack_ptr = PL_markstack;	507	PL_markstack_ptr = PL_markstack;
478	PL_markstack_max = PL_markstack + 16;	508	PL_markstack_max = PL_markstack + 16;
479		509
		510	#ifdef SET_MARK_OFFSET
480	SET_MARK_OFFSET;	511	SET_MARK_OFFSET;
		512	#endif
481		513
482	New(54,PL_scopestack,16,I32);	514	New(54,PL_scopestack,16,I32);
483	PL_scopestack_ix = 0;	515	PL_scopestack_ix = 0;
484	PL_scopestack_max = 16;	516	PL_scopestack_max = 16;
485		517
…		…
488	PL_savestack_max = 96;	520	PL_savestack_max = 96;
489		521
490	New(54,PL_retstack,8,OP*);	522	New(54,PL_retstack,8,OP*);
491	PL_retstack_ix = 0;	523	PL_retstack_ix = 0;
492	PL_retstack_max = 8;	524	PL_retstack_max = 8;
		525
		526	UNLOCK;
493	}	527	}
494		528
495	/*	529	/*
496	* destroy the stacks, the callchain etc...	530	* destroy the stacks, the callchain etc...
497	* still there is a memleak of 128 bytes...
498	*/	531	*/
499	STATIC void	532	STATIC void
500	destroy_stacks(pTHX)	533	destroy_stacks(pTHX)
501	{	534	{
		535	if (!IN_DESTRUCT)
		536	{
502	/* is this ugly, I ask? */	537	/* is this ugly, I ask? */
503	while (PL_scopestack_ix)	538	LEAVE_SCOPE (0);
504	LEAVE;
505		539
506	/* sure it is, but more important: is it correct?? :/ */	540	/* sure it is, but more important: is it correct?? :/ */
507	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
508	FREETMPS;	541	FREETMPS;
		542
		543	/POPSTACK_TO (PL_mainstack);//D//use/
		544	}
509		545
510	while (PL_curstackinfo->si_next)	546	while (PL_curstackinfo->si_next)
511	PL_curstackinfo = PL_curstackinfo->si_next;	547	PL_curstackinfo = PL_curstackinfo->si_next;
512		548
513	while (PL_curstackinfo)	549	while (PL_curstackinfo)
514	{	550	{
515	PERL_SI *p = PL_curstackinfo->si_prev;	551	PERL_SI *p = PL_curstackinfo->si_prev;
516		552
517	{	553	{ /D//remove/
518	dSP;	554	dSP;
519	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	555	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
520	PUTBACK; /* possibly superfluous */	556	PUTBACK; /* possibly superfluous */
521	}	557	}
522		558
523	dounwind(-1);	559	if (!IN_DESTRUCT)
524		560	{
		561	dounwind (-1);/D//remove/
525	SvREFCNT_dec(PL_curstackinfo->si_stack);	562	SvREFCNT_dec (PL_curstackinfo->si_stack);
		563	}
		564
526	Safefree(PL_curstackinfo->si_cxstack);	565	Safefree (PL_curstackinfo->si_cxstack);
527	Safefree(PL_curstackinfo);	566	Safefree (PL_curstackinfo);
528	PL_curstackinfo = p;	567	PL_curstackinfo = p;
529	}	568	}
530		569
531	Safefree(PL_tmps_stack);	570	Safefree (PL_tmps_stack);
532	Safefree(PL_markstack);	571	Safefree (PL_markstack);
533	Safefree(PL_scopestack);	572	Safefree (PL_scopestack);
534	Safefree(PL_savestack);	573	Safefree (PL_savestack);
535	Safefree(PL_retstack);	574	Safefree (PL_retstack);
536	}	575	}
537		576
538	static void	577	static void
539	allocate_stack (Coro__State ctx, int alloc)	578	allocate_stack (Coro__State ctx, int alloc)
540	{	579	{
…		…
543	New (0, stack, 1, coro_stack);	582	New (0, stack, 1, coro_stack);
544		583
545	stack->refcnt = 1;	584	stack->refcnt = 1;
546	stack->usecnt = 1;	585	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;	586	stack->gencnt = ctx->gencnt = 0;
		587
548	if (alloc)	588	if (alloc)
549	{	589	{
550	#ifdef HAVE_MMAP	590	#if HAVE_MMAP
551	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */	591	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
552	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	592	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
553	if (stack->sptr == (void *)-1)	593	if (stack->sptr == (void *)-1)
554	#endif	594	#endif
555	{	595	{
556	/FIXME//D//* reasonable stack size! */	596	/FIXME//D//* reasonable stack size! */
557	stack->ssize = -4096 * sizeof (long);	597	stack->ssize = - (8192 * sizeof (long));
558	New (0, stack->sptr, 4096, long);	598	New (0, stack->sptr, 8192, long);
559	}	599	}
560	}	600	}
561	else	601	else
562	stack->sptr = 0;	602	stack->sptr = 0;
563		603
…		…
577	{	617	{
578	#ifdef HAVE_MMAP	618	#ifdef HAVE_MMAP
579	if (stack->ssize > 0 && stack->sptr)	619	if (stack->ssize > 0 && stack->sptr)
580	munmap (stack->sptr, stack->ssize);	620	munmap (stack->sptr, stack->ssize);
581	else	621	else
582	#else	622	#endif
583	Safefree (stack->sptr);	623	Safefree (stack->sptr);
584	#endif	624
585	Safefree (stack);	625	Safefree (stack);
586	}	626	}
587	else if (ctx->gencnt == stack->gencnt)	627	else if (ctx->gencnt == stack->gencnt)
588	--stack->usecnt;	628	--stack->usecnt;
589	}	629	}
…		…
593	setup_coro (void *arg)	633	setup_coro (void *arg)
594	{	634	{
595	/*	635	/*
596	* emulate part of the perl startup here.	636	* emulate part of the perl startup here.
597	*/	637	*/
		638	dTHX;
598	dSP;	639	dSP;
599	Coro__State ctx = (Coro__State)arg;	640	Coro__State ctx = (Coro__State)arg;
600	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	641	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
601		642
602	coro_init_stacks (aTHX);	643	coro_init_stacks (aTHX);
603	JMPENV_BOOTSTRAP;	644	/PL_curcop = 0;/
		645	/PL_in_eval = PL_in_eval;/ /* inherit */
		646	SvREFCNT_dec (GvAV (PL_defgv));
		647	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		648
604	SPAGAIN;	649	SPAGAIN;
605
606	/PL_curcop = 0;/
607	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = ctx->args;
609		650
610	if (ctx->stack)	651	if (ctx->stack)
611	{	652	{
612	ctx->cursp = 0;	653	ctx->cursp = 0;
613		654
614	PUSHMARK(SP);	655	PUSHMARK(SP);
615	PUTBACK;	656	PUTBACK;
616	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	657	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		658
		659	if (SvTRUE (ERRSV))
		660	croak (NULL);
		661	else
617	croak ("FATAL: CCTXT coroutine returned!");	662	croak ("FATAL: CCTXT coroutine returned!");
618	}	663	}
619	else	664	else
620	{	665	{
621	UNOP myop;	666	UNOP myop;
622		667
…		…
634	* that doesn't matter, though, since it is only	679	* that doesn't matter, though, since it is only
635	* pp_nextstate and we never return...	680	* pp_nextstate and we never return...
636	* ah yes, and I don't care anyways ;)	681	* ah yes, and I don't care anyways ;)
637	*/	682	*/
638	PUTBACK;	683	PUTBACK;
639	PL_op = pp_entersub();	684	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
640	SPAGAIN;	685	SPAGAIN;
641		686
642	ENTER; /* necessary e.g. for dounwind */	687	ENTER; /* necessary e.g. for dounwind */
643	}	688	}
644	}	689	}
…		…
647	continue_coro (void *arg)	692	continue_coro (void *arg)
648	{	693	{
649	/*	694	/*
650	* this is a _very_ stripped down perl interpreter ;)	695	* this is a _very_ stripped down perl interpreter ;)
651	*/	696	*/
		697	dTHX;
652	Coro__State ctx = (Coro__State)arg;	698	Coro__State ctx = (Coro__State)arg;
		699	JMPENV coro_start_env;
		700
		701	PL_top_env = &ctx->start_env;
653		702
654	ctx->cursp = 0;	703	ctx->cursp = 0;
655	PL_op = PL_op->op_next;	704	PL_op = PL_op->op_next;
656	CALLRUNOPS(aTHX);	705	CALLRUNOPS(aTHX);
657	/NORETURN/	706
658	abort ();	707	abort ();
659	}	708	}
660		709
661	STATIC void	710	STATIC void
662	transfer(pTHX_ struct coro prev, struct coro next, int flags)	711	transfer (pTHX_ struct coro prev, struct coro next, int flags)
663	{	712	{
664	dSP;
665	dSTACKLEVEL;	713	dSTACKLEVEL;
666		714
667	if (prev != next)	715	if (prev != next)
668	{	716	{
669	if (next->mainstack)	717	if (next->mainstack)
670	{	718	{
		719	LOCK;
671	SAVE (prev, flags);	720	SAVE (prev, flags);
672	LOAD (next);	721	LOAD (next);
		722	UNLOCK;
673		723
674	/* mark this state as in-use */	724	/* mark this state as in-use */
675	next->mainstack = 0;	725	next->mainstack = 0;
676	next->tmps_ix = -2;	726	next->tmps_ix = -2;
677		727
…		…
696	continue_coro, (void *)next,	746	continue_coro, (void *)next,
697	next->stack->sptr, labs (next->stack->ssize));	747	next->stack->sptr, labs (next->stack->ssize));
698	}	748	}
699		749
700	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		751	prev->cursp = stacklevel;
		752	/* don't add any code here */
701	}	753	}
702		754	else
		755	next->cursp = stacklevel;
703	}	756	}
704	else if (next->tmps_ix == -2)	757	else if (next->tmps_ix == -2)
705	croak ("tried to transfer to running coroutine");	758	croak ("tried to transfer to running coroutine");
706	else	759	else
707	{	760	{
		761	LOCK;
708	SAVE (prev, -1); /* first get rid of the old state */	762	SAVE (prev, -1); /* first get rid of the old state */
		763	UNLOCK;
709		764
710	if (flags & TRANSFER_SAVE_CCTXT)	765	if (flags & TRANSFER_SAVE_CCTXT)
711	{	766	{
712	if (!prev->stack)	767	if (!prev->stack)
713	allocate_stack (prev, 0);	768	allocate_stack (prev, 0);
714		769
715	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	770	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
716	{	771	{
		772	PL_top_env = &next->start_env;
		773
717	setup_coro (next);	774	setup_coro (next);
		775	next->cursp = stacklevel;
718		776
719	prev->stack->refcnt++;	777	prev->stack->refcnt++;
720	prev->stack->usecnt++;	778	prev->stack->usecnt++;
721	next->stack = prev->stack;	779	next->stack = prev->stack;
722	next->gencnt = prev->gencnt;	780	next->gencnt = prev->gencnt;
723	}	781	}
724	else	782	else
725	{	783	{
		784	assert (!next->stack);
726	allocate_stack (next, 1);	785	allocate_stack (next, 1);
727	coro_create (&(next->stack->cctx),	786	coro_create (&(next->stack->cctx),
728	setup_coro, (void *)next,	787	setup_coro, (void *)next,
729	next->stack->sptr, labs (next->stack->ssize));	788	next->stack->sptr, labs (next->stack->ssize));
730	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	789	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		790	prev->cursp = stacklevel;
		791	/* don't add any code here */
731	}	792	}
732	}	793	}
733	else	794	else
		795	{
734	setup_coro (next);	796	setup_coro (next);
		797	next->cursp = stacklevel;
		798	}
735	}	799	}
736	}	800	}
737		801
738	next->cursp = stacklevel;	802	LOCK;
		803	if (coro_mortal)
		804	{
		805	SvREFCNT_dec (coro_mortal);
		806	coro_mortal = 0;
		807	}
		808	UNLOCK;
		809	}
		810
		811	#define SV_CORO(sv,func) \
		812	do { \
		813	if (SvROK (sv)) \
		814	sv = SvRV (sv); \
		815	\
		816	if (SvTYPE (sv) == SVt_PVHV) \
		817	{ \
		818	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		819	\
		820	if (!he) \
		821	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		822	\
		823	(sv) = SvRV (HeVAL(he)); \
		824	} \
		825	\
		826	/* must also be changed inside Coro::Cont::yield */ \
		827	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		828	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		829	\
		830	} while(0)
		831
		832	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		833
		834	static void
		835	api_transfer(pTHX_ SV prev, SV next, int flags)
		836	{
		837	SV_CORO (prev, "Coro::transfer");
		838	SV_CORO (next, "Coro::transfer");
		839
		840	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		841	}
		842
		843	/ Coro ******************************************************************/
		844
		845	#define PRIO_MAX 3
		846	#define PRIO_HIGH 1
		847	#define PRIO_NORMAL 0
		848	#define PRIO_LOW -1
		849	#define PRIO_IDLE -3
		850	#define PRIO_MIN -4
		851
		852	/* for Coro.pm */
		853	static GV coro_current, coro_idle;
		854	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		855	static int coro_nready;
		856
		857	static void
		858	coro_enq (pTHX_ SV *sv)
		859	{
		860	if (SvTYPE (sv) == SVt_PVHV)
		861	{
		862	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		863	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		864
		865	prio = prio > PRIO_MAX ? PRIO_MAX
		866	: prio < PRIO_MIN ? PRIO_MIN
		867	: prio;
		868
		869	av_push (coro_ready [prio - PRIO_MIN], sv);
		870	coro_nready++;
		871
		872	return;
		873	}
		874
		875	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		876	}
		877
		878	static SV *
		879	coro_deq (pTHX_ int min_prio)
		880	{
		881	int prio = PRIO_MAX - PRIO_MIN;
		882
		883	min_prio -= PRIO_MIN;
		884	if (min_prio < 0)
		885	min_prio = 0;
		886
		887	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		888	if (av_len (coro_ready[prio]) >= 0)
		889	{
		890	coro_nready--;
		891	return av_shift (coro_ready[prio]);
		892	}
		893
		894	return 0;
		895	}
		896
		897	static void
		898	api_ready (SV *coro)
		899	{
		900	dTHX;
		901
		902	if (SvROK (coro))
		903	coro = SvRV (coro);
		904
		905	LOCK;
		906	coro_enq (aTHX_ SvREFCNT_inc (coro));
		907	UNLOCK;
		908	}
		909
		910	static void
		911	api_schedule (void)
		912	{
		913	dTHX;
		914
		915	SV prev, next;
		916
		917	LOCK;
		918
		919	prev = SvRV (GvSV (coro_current));
		920	next = coro_deq (aTHX_ PRIO_MIN);
		921
		922	if (!next)
		923	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		924
		925	/* free this only after the transfer */
		926	coro_mortal = prev;
		927	SV_CORO (prev, "Coro::schedule");
		928
		929	SvRV (GvSV (coro_current)) = next;
		930
		931	SV_CORO (next, "Coro::schedule");
		932
		933	UNLOCK;
		934
		935	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		936	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		937	}
		938
		939	static void
		940	api_cede (void)
		941	{
		942	dTHX;
		943
		944	LOCK;
		945	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		946	UNLOCK;
		947
		948	api_schedule ();
739	}	949	}
740		950
741	MODULE = Coro::State PACKAGE = Coro::State	951	MODULE = Coro::State PACKAGE = Coro::State
742		952
743	PROTOTYPES: ENABLE	953	PROTOTYPES: ENABLE
744		954
745	BOOT:	955	BOOT:
746	{ /* {} necessary for stoopid perl-5.6.x */	956	{ /* {} necessary for stoopid perl-5.6.x */
		957	#ifdef USE_ITHREADS
		958	MUTEX_INIT (&coro_mutex);
		959	#endif
		960
747	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	961	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
748	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	962	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
749	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	963	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
750		964
751	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	965	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
752	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	966	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
753	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	967	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
754	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	968	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
755		969
756	if (!padlist_cache)
757	padlist_cache = newHV ();
758
759	main_mainstack = PL_mainstack;	970	main_mainstack = PL_mainstack;
		971
		972	coroapi.ver = CORO_API_VERSION;
		973	coroapi.transfer = api_transfer;
760	}	974	}
761		975
762	Coro::State	976	Coro::State
763	_newprocess(args)	977	_newprocess(args)
764	SV * args	978	SV * args
…		…
767	Coro__State coro;	981	Coro__State coro;
768		982
769	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	983	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
770	croak ("Coro::State::_newprocess expects an arrayref");	984	croak ("Coro::State::_newprocess expects an arrayref");
771		985
772	New (0, coro, 1, struct coro);	986	Newz (0, coro, 1, struct coro);
773		987
774	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	988	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
775	coro->mainstack = 0; /* actual work is done inside transfer */	989	/coro->mainstack = 0; //actual work is done inside transfer /
776	coro->stack = 0;	990	/coro->stack = 0;/
		991
		992	/* same as JMPENV_BOOTSTRAP */
		993	/* we might be able to recycle start_env, but safe is safe */
		994	/Zero(&coro->start_env, 1, JMPENV);/
		995	coro->start_env.je_ret = -1;
		996	coro->start_env.je_mustcatch = TRUE;
777		997
778	RETVAL = coro;	998	RETVAL = coro;
779	OUTPUT:	999	OUTPUT:
780	RETVAL	1000	RETVAL
781		1001
782	void	1002	void
783	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	1003	transfer(prev, next, flags)
784	Coro::State_or_hashref prev	1004	SV *prev
785	Coro::State_or_hashref next	1005	SV *next
786	int flags	1006	int flags
787	PROTOTYPE: @	1007	PROTOTYPE: @
788	CODE:	1008	CODE:
		1009	PUTBACK;
		1010	SV_CORO (next, "Coro::transfer");
		1011	SV_CORO (prev, "Coro::transfer");
789	transfer (aTHX_ prev, next, flags);	1012	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		1013	SPAGAIN;
790		1014
791	void	1015	void
792	DESTROY(coro)	1016	DESTROY(coro)
793	Coro::State coro	1017	Coro::State coro
794	CODE:	1018	CODE:
795		1019
796	if (coro->mainstack && coro->mainstack != main_mainstack)	1020	if (coro->mainstack && coro->mainstack != main_mainstack)
797	{	1021	{
798	struct coro temp;	1022	struct coro temp;
799		1023
		1024	PUTBACK;
800	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1025	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
801	LOAD(aTHX_ coro);	1026	LOAD (aTHX_ coro);
		1027	SPAGAIN;
802		1028
803	destroy_stacks (aTHX);	1029	destroy_stacks (aTHX);
804		1030
805	LOAD((&temp)); /* this will get rid of defsv etc.. */	1031	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1032	SPAGAIN;
806		1033
807	coro->mainstack = 0;	1034	coro->mainstack = 0;
808	}	1035	}
809		1036
810	deallocate_stack (coro);	1037	deallocate_stack (coro);
811		1038	SvREFCNT_dec (coro->args);
812	Safefree (coro);	1039	Safefree (coro);
813		1040
814	void	1041	void
815	flush()	1042	_exit(code)
		1043	int code
		1044	PROTOTYPE: $
816	CODE:	1045	CODE:
817	#ifdef MAY_FLUSH	1046	_exit (code);
818	flush_padlist_cache ();
819	#endif
820		1047
821	MODULE = Coro::State PACKAGE = Coro::Cont	1048	MODULE = Coro::State PACKAGE = Coro::Cont
822		1049
823	# this is slightly dirty	1050	# this is slightly dirty (should expose a c-level api)
824		1051
825	void	1052	void
826	yield(...)	1053	yield(...)
827	PROTOTYPE: @	1054	PROTOTYPE: @
828	CODE:	1055	CODE:
829	static SV *returnstk;	1056	SV *yieldstack;
830	SV *sv;	1057	SV *sv;
831	AV *defav = GvAV (PL_defgv);	1058	AV *defav = GvAV (PL_defgv);
832	struct coro prev, next;	1059	struct coro prev, next;
833		1060
834	if (!returnstk)	1061	yieldstack = *hv_fetch (
835	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1062	(HV *)SvRV (GvSV (coro_current)),
		1063	"yieldstack", sizeof ("yieldstack") - 1,
		1064	0
		1065	);
836		1066
837	/* set up @_ -- ugly */	1067	/* set up @_ -- ugly */
838	av_clear (defav);	1068	av_clear (defav);
839	av_fill (defav, items - 1);	1069	av_fill (defav, items - 1);
840	while (items--)	1070	while (items--)
841	av_store (defav, items, SvREFCNT_inc (ST(items)));	1071	av_store (defav, items, SvREFCNT_inc (ST(items)));
842		1072
843	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
844	sv = av_pop ((AV *)SvRV (returnstk));	1073	sv = av_pop ((AV *)SvRV (yieldstack));
845	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1074	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
846	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1075	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
847	SvREFCNT_dec (sv);	1076	SvREFCNT_dec (sv);
848		1077
849	transfer(aTHX_ prev, next, 0);	1078	transfer (aTHX_ prev, next, 0);
850		1079
		1080	MODULE = Coro::State PACKAGE = Coro
		1081
		1082	# this is slightly dirty (should expose a c-level api)
		1083
		1084	BOOT:
		1085	{
		1086	int i;
		1087	HV *stash = gv_stashpv ("Coro", TRUE);
		1088
		1089	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1090	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1091	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1092	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1093	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1094	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1095
		1096	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1097	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1098
		1099	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1100	coro_ready[i] = newAV ();
		1101
		1102	{
		1103	SV *sv = perl_get_sv("Coro::API", 1);
		1104
		1105	coroapi.schedule = api_schedule;
		1106	coroapi.cede = api_cede;
		1107	coroapi.ready = api_ready;
		1108	coroapi.nready = &coro_nready;
		1109	coroapi.current = coro_current;
		1110
		1111	GCoroAPI = &coroapi;
		1112	sv_setiv(sv, (IV)&coroapi);
		1113	SvREADONLY_on(sv);
		1114	}
		1115	}
		1116
		1117	#if !PERL_MICRO
		1118
		1119	void
		1120	ready(self)
		1121	SV * self
		1122	PROTOTYPE: $
		1123	CODE:
		1124	api_ready (self);
		1125
		1126	#endif
		1127
		1128	int
		1129	nready(...)
		1130	PROTOTYPE:
		1131	CODE:
		1132	RETVAL = coro_nready;
		1133	OUTPUT:
		1134	RETVAL
		1135
		1136	void
		1137	schedule(...)
		1138	PROTOTYPE:
		1139	CODE:
		1140	api_schedule ();
		1141
		1142	void
		1143	cede(...)
		1144	PROTOTYPE:
		1145	CODE:
		1146	api_cede ();
		1147

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Comparing Coro/Coro/State.xs (file contents): Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs. Revision 1.64 by root, Mon Mar 21 15:06:51 2005 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.64 by root, Mon Mar 21 15:06:51 2005 UTC