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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.13 by root, Mon Jul 23 22:09:39 2001 UTC vs.
Revision 1.58 by pcg, Fri May 14 13:25:09 2004 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		2
1	#include "EXTERN.h"	3	#include "EXTERN.h"
2	#include "perl.h"	4	#include "perl.h"
3	#include "XSUB.h"	5	#include "XSUB.h"
4		6
		7	#include "patchlevel.h"
		8
		9	#if PATCHLEVEL < 6
		10	# ifndef PL_ppaddr
		11	# define PL_ppaddr ppaddr
		12	# endif
		13	# ifndef call_sv
		14	# define call_sv perl_call_sv
		15	# endif
		16	# ifndef get_sv
		17	# define get_sv perl_get_sv
		18	# endif
		19	# ifndef get_cv
		20	# define get_cv perl_get_cv
		21	# endif
		22	# ifndef IS_PADGV
		23	# define IS_PADGV(v) 0
		24	# endif
		25	# ifndef IS_PADCONST
		26	# define IS_PADCONST(v) 0
		27	# endif
		28	#endif
		29
5	#include "libcoro/coro.c"	30	#include "libcoro/coro.c"
		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		45
12	#define MAY_FLUSH /* increases codesize */
13
14	#define SUB_INIT "Coro::State::initialize"	46	#define SUB_INIT "Coro::State::initialize"
		47	#define UCORO_STATE "_coro_state"
15		48
16	#define TRANSFER_SAVE_DEFAV 0x00000001	49	/* The next macro should declare a variable stacklevel that contains and approximation
17	#define TRANSFER_SAVE_DEFSV 0x00000002	50	* to the current C stack pointer. Its property is that it changes with each call
18	#define TRANSFER_SAVE_ERRSV 0x00000004	51	* and should be unique. */
19	#define TRANSFER_SAVE_CCTXT 0x00000008	52	#define dSTACKLEVEL void *stacklevel = &stacklevel
20		53
21	#define TRANSFER_SAVE_ALL -1	54	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		55
		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 */
		75
		76	/* this is actually not only the c stack but also c registers etc... */
		77	typedef struct {
		78	int refcnt; /* pointer reference counter */
		79	int usecnt; /* shared by how many coroutines */
		80	int gencnt; /* generation counter */
		81
		82	coro_context cctx;
		83
		84	void *sptr;
		85	long ssize; /* positive == mmap, otherwise malloc */
		86	} coro_stack;
22		87
23	struct coro {	88	struct coro {
		89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		90	JMPENV start_env;
		91
24	/* the optional C context */	92	/* the optional C context */
25	coro_context cctx;	93	coro_stack *stack;
26	void *sptr;	94	void *cursp;
27	long ssize;	95	int gencnt;
28		96
29	/* optionally saved, might be zero */	97	/* optionally saved, might be zero */
30	AV *defav;	98	AV *defav;
31	SV *defsv;	99	SV *defsv;
32	SV *errsv;	100	SV *errsv;
33		101
34	/* saved global state not related to stacks */	102	/* saved global state not related to stacks */
35	U8 dowarn;	103	U8 dowarn;
		104	I32 in_eval;
36		105
37	/* the stacks and related info (callchain etc..) */	106	/* the stacks and related info (callchain etc..) */
38	PERL_SI *curstackinfo;	107	PERL_SI *curstackinfo;
39	AV *curstack;	108	AV *curstack;
40	AV *mainstack;	109	AV *mainstack;
41	SV **stack_sp;	110	SV **stack_sp;
42	OP *op;	111	OP *op;
43	SV **curpad;	112	SV **curpad;
		113	AV *comppad;
44	SV **stack_base;	114	SV **stack_base;
45	SV **stack_max;	115	SV **stack_max;
46	SV **tmps_stack;	116	SV **tmps_stack;
47	I32 tmps_floor;	117	I32 tmps_floor;
48	I32 tmps_ix;	118	I32 tmps_ix;
58	I32 savestack_max;	128	I32 savestack_max;
59	OP **retstack;	129	OP **retstack;
60	I32 retstack_ix;	130	I32 retstack_ix;
61	I32 retstack_max;	131	I32 retstack_max;
62	COP *curcop;	132	COP *curcop;
63	JMPENV start_env;
64	JMPENV *top_env;	133	JMPENV *top_env;
65		134
66	/* data associated with this coroutine (initial args) */	135	/* data associated with this coroutine (initial args) */
67	AV *args;	136	AV *args;
68	};	137	};
69		138
70	typedef struct coro *Coro__State;	139	typedef struct coro *Coro__State;
71	typedef struct coro *Coro__State_or_hashref;	140	typedef struct coro *Coro__State_or_hashref;
72		141
73	static AV main_mainstack; / used to differentiate between $main and others */
74	static HV *coro_state_stash;
75	static HV *padlist_cache;
76
77	/* mostly copied from op.c:cv_clone2 */	142	/* mostly copied from op.c:cv_clone2 */
78	STATIC AV *	143	STATIC AV *
79	clone_padlist (AV *protopadlist)	144	clone_padlist (pTHX_ AV *protopadlist)
80	{	145	{
81	AV *av;	146	AV *av;
82	I32 ix;	147	I32 ix;
83	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	148	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
84	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	149	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
108	AvFLAGS (av) = AVf_REIFY;	173	AvFLAGS (av) = AVf_REIFY;
109		174
110	for (ix = fpad; ix > 0; ix--)	175	for (ix = fpad; ix > 0; ix--)
111	{	176	{
112	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	177	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		178
113	if (namesv && namesv != &PL_sv_undef)	179	if (namesv && namesv != &PL_sv_undef)
114	{	180	{
115	char name = SvPVX (namesv); / XXX */	181	char name = SvPVX (namesv); / XXX */
		182
116	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	183	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
117	{ /* lexical from outside? */	184	{ /* lexical from outside? */
118	npad[ix] = SvREFCNT_inc (ppad[ix]);	185	npad[ix] = SvREFCNT_inc (ppad[ix]);
119	}	186	}
120	else	187	else
…		…
126	sv = (SV *) newAV ();	193	sv = (SV *) newAV ();
127	else if (*name == '%')	194	else if (*name == '%')
128	sv = (SV *) newHV ();	195	sv = (SV *) newHV ();
129	else	196	else
130	sv = NEWSV (0, 0);	197	sv = NEWSV (0, 0);
		198
		199	#ifdef SvPADBUSY
131	if (!SvPADBUSY (sv))	200	if (!SvPADBUSY (sv))
		201	#endif
132	SvPADMY_on (sv);	202	SvPADMY_on (sv);
		203
133	npad[ix] = sv;	204	npad[ix] = sv;
134	}	205	}
135	}	206	}
136	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	207	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
137	{	208	{
…		…
166	#endif	237	#endif
167		238
168	return newpadlist;	239	return newpadlist;
169	}	240	}
170		241
171	#ifdef MAY_FLUSH	242	STATIC void
172	STATIC AV *
173	free_padlist (AV *padlist)	243	free_padlist (pTHX_ AV *padlist)
174	{	244	{
175	/* may be during global destruction */	245	/* may be during global destruction */
176	if (SvREFCNT(padlist))	246	if (SvREFCNT (padlist))
177	{	247	{
178	I32 i = AvFILLp(padlist);	248	I32 i = AvFILLp (padlist);
179	while (i >= 0)	249	while (i >= 0)
180	{	250	{
181	SV **svp = av_fetch(padlist, i--, FALSE);	251	SV **svp = av_fetch (padlist, i--, FALSE);
182	SV sv = svp ? svp : Nullsv;
183	if (sv)	252	if (svp)
		253	{
		254	SV *sv;
		255	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
184	SvREFCNT_dec(sv);	256	SvREFCNT_dec (sv);
		257
		258	SvREFCNT_dec (*svp);
		259	}
185	}	260	}
186		261
187	SvREFCNT_dec((SV*)padlist);	262	SvREFCNT_dec ((SV*)padlist);
188	}	263	}
189	}	264	}
190	#endif	265
		266	STATIC int
		267	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		268	{
		269	AV *padlist;
		270	AV av = (AV )mg->mg_obj;
		271
		272	/* casting is fun. */
		273	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		274	free_padlist (aTHX_ padlist);
		275	}
		276
		277	#define PERL_MAGIC_coro PERL_MAGIC_ext
		278
		279	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
191		280
192	/* the next two functions merely cache the padlists */	281	/* the next two functions merely cache the padlists */
193	STATIC void	282	STATIC void
194	get_padlist (CV *cv)	283	get_padlist (pTHX_ CV *cv)
195	{	284	{
196	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	285	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
197		286
198	if (he && AvFILLp ((AV )he) >= 0)	287	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
199	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	288	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
200	else	289	else
201	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	290	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
202	}	291	}
203		292
204	STATIC void	293	STATIC void
205	put_padlist (CV *cv)	294	put_padlist (pTHX_ CV *cv)
206	{	295	{
207	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	296	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
208		297
209	if (SvTYPE (*he) != SVt_PVAV)	298	if (!mg)
210	{	299	{
211	SvREFCNT_dec (*he);	300	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		301	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		302	mg->mg_virtual = &vtbl_coro;
212	he = (SV )newAV ();	303	mg->mg_obj = (SV *)newAV ();
213	}	304	}
214		305
215	av_push ((AV )he, (SV *)CvPADLIST (cv));	306	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
216	}	307	}
217
218	#ifdef MAY_FLUSH
219	STATIC void
220	flush_padlist_cache ()
221	{
222	HV *hv = padlist_cache;
223	padlist_cache = newHV ();
224
225	if (hv_iterinit (hv))
226	{
227	HE *he;
228	AV *padlist;
229
230	while (!!(he = hv_iternext (hv)))
231	{
232	AV av = (AV )HeVAL(he);
233
234	/* casting is fun. */
235	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
236	free_padlist (padlist);
237	}
238	}
239
240	SvREFCNT_dec (hv);
241	}
242	#endif
243		308
244	#define SB do {	309	#define SB do {
245	#define SE } while (0)	310	#define SE } while (0)
246		311
247	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	312	#define LOAD(state) load_state(aTHX_ (state));
248	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	313	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
249		314
250	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	315	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
251		316
252	static void	317	static void
253	load_state(pTHX_ Coro__State c)	318	load_state(pTHX_ Coro__State c)
254	{	319	{
255	PL_dowarn = c->dowarn;	320	PL_dowarn = c->dowarn;
		321	PL_in_eval = c->in_eval;
256		322
257	PL_curstackinfo = c->curstackinfo;	323	PL_curstackinfo = c->curstackinfo;
258	PL_curstack = c->curstack;	324	PL_curstack = c->curstack;
259	PL_mainstack = c->mainstack;	325	PL_mainstack = c->mainstack;
260	PL_stack_sp = c->stack_sp;	326	PL_stack_sp = c->stack_sp;
261	PL_op = c->op;	327	PL_op = c->op;
262	PL_curpad = c->curpad;	328	PL_curpad = c->curpad;
		329	PL_comppad = c->comppad;
263	PL_stack_base = c->stack_base;	330	PL_stack_base = c->stack_base;
264	PL_stack_max = c->stack_max;	331	PL_stack_max = c->stack_max;
265	PL_tmps_stack = c->tmps_stack;	332	PL_tmps_stack = c->tmps_stack;
266	PL_tmps_floor = c->tmps_floor;	333	PL_tmps_floor = c->tmps_floor;
267	PL_tmps_ix = c->tmps_ix;	334	PL_tmps_ix = c->tmps_ix;
…		…
277	PL_savestack_max = c->savestack_max;	344	PL_savestack_max = c->savestack_max;
278	PL_retstack = c->retstack;	345	PL_retstack = c->retstack;
279	PL_retstack_ix = c->retstack_ix;	346	PL_retstack_ix = c->retstack_ix;
280	PL_retstack_max = c->retstack_max;	347	PL_retstack_max = c->retstack_max;
281	PL_curcop = c->curcop;	348	PL_curcop = c->curcop;
282	PL_start_env = c->start_env;
283	PL_top_env = c->top_env;	349	PL_top_env = c->top_env;
284		350
285	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	351	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
286	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	352	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
287	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	353	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
295	{	361	{
296	AV padlist = (AV )POPs;	362	AV padlist = (AV )POPs;
297		363
298	if (padlist)	364	if (padlist)
299	{	365	{
300	put_padlist (cv); /* mark this padlist as available */	366	put_padlist (aTHX_ cv); /* mark this padlist as available */
301	CvPADLIST(cv) = padlist;	367	CvPADLIST(cv) = padlist;
302	#ifdef USE_THREADS
303	/CvOWNER(cv) = (struct perl_thread )POPs;*/
304	#endif
305	}	368	}
306		369
307	++CvDEPTH(cv);	370	++CvDEPTH(cv);
308	}	371	}
309		372
…		…
327		390
328	PUSHs (Nullsv);	391	PUSHs (Nullsv);
329	/* this loop was inspired by pp_caller */	392	/* this loop was inspired by pp_caller */
330	for (;;)	393	for (;;)
331	{	394	{
332	do	395	while (cxix >= 0)
333	{	396	{
334	PERL_CONTEXT *cx = &ccstk[cxix--];	397	PERL_CONTEXT *cx = &ccstk[cxix--];
335		398
336	if (CxTYPE(cx) == CXt_SUB)	399	if (CxTYPE(cx) == CXt_SUB)
337	{	400	{
338	CV *cv = cx->blk_sub.cv;	401	CV *cv = cx->blk_sub.cv;
339	if (CvDEPTH(cv))	402	if (CvDEPTH(cv))
340	{	403	{
341	#ifdef USE_THREADS
342	/XPUSHs ((SV )CvOWNER(cv));*/
343	/CvOWNER(cv) = 0;/
344	/error must unlock this cv etc.. etc.../
345	#endif
346	EXTEND (SP, CvDEPTH(cv)*2);	404	EXTEND (SP, CvDEPTH(cv)*2);
347		405
348	while (--CvDEPTH(cv))	406	while (--CvDEPTH(cv))
349	{	407	{
350	/* this tells the restore code to increment CvDEPTH */	408	/* this tells the restore code to increment CvDEPTH */
…		…
353	}	411	}
354		412
355	PUSHs ((SV *)CvPADLIST(cv));	413	PUSHs ((SV *)CvPADLIST(cv));
356	PUSHs ((SV *)cv);	414	PUSHs ((SV *)cv);
357		415
358	get_padlist (cv); /* this is a monster */	416	get_padlist (aTHX_ cv); /* this is a monster */
359	}	417	}
360	}	418	}
		419	#ifdef CXt_FORMAT
361	else if (CxTYPE(cx) == CXt_FORMAT)	420	else if (CxTYPE(cx) == CXt_FORMAT)
362	{	421	{
363	/* I never used formats, so how should I know how these are implemented? */	422	/* I never used formats, so how should I know how these are implemented? */
364	/* my bold guess is as a simple, plain sub... */	423	/* my bold guess is as a simple, plain sub... */
365	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	424	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
366	}	425	}
		426	#endif
367	}	427	}
368	while (cxix >= 0);
369		428
370	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
371	break;	430	break;
372		431
373	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
…		…
380		439
381	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	440	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
382	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
383	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	442	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
384		443
385	/* I have not the slightest idea of why av_reify is necessary */
386	/* but if it's missing the defav contents magically get replaced sometimes */
387	if (c->defav)
388	av_reify (c->defav);
389
390	c->dowarn = PL_dowarn;	444	c->dowarn = PL_dowarn;
		445	c->in_eval = PL_in_eval;
391		446
392	c->curstackinfo = PL_curstackinfo;	447	c->curstackinfo = PL_curstackinfo;
393	c->curstack = PL_curstack;	448	c->curstack = PL_curstack;
394	c->mainstack = PL_mainstack;	449	c->mainstack = PL_mainstack;
395	c->stack_sp = PL_stack_sp;	450	c->stack_sp = PL_stack_sp;
396	c->op = PL_op;	451	c->op = PL_op;
397	c->curpad = PL_curpad;	452	c->curpad = PL_curpad;
		453	c->comppad = PL_comppad;
398	c->stack_base = PL_stack_base;	454	c->stack_base = PL_stack_base;
399	c->stack_max = PL_stack_max;	455	c->stack_max = PL_stack_max;
400	c->tmps_stack = PL_tmps_stack;	456	c->tmps_stack = PL_tmps_stack;
401	c->tmps_floor = PL_tmps_floor;	457	c->tmps_floor = PL_tmps_floor;
402	c->tmps_ix = PL_tmps_ix;	458	c->tmps_ix = PL_tmps_ix;
…		…
412	c->savestack_max = PL_savestack_max;	468	c->savestack_max = PL_savestack_max;
413	c->retstack = PL_retstack;	469	c->retstack = PL_retstack;
414	c->retstack_ix = PL_retstack_ix;	470	c->retstack_ix = PL_retstack_ix;
415	c->retstack_max = PL_retstack_max;	471	c->retstack_max = PL_retstack_max;
416	c->curcop = PL_curcop;	472	c->curcop = PL_curcop;
417	c->start_env = PL_start_env;
418	c->top_env = PL_top_env;	473	c->top_env = PL_top_env;
419	}	474	}
420		475
421	/*	476	/*
422	* allocate various perl stacks. This is an exact copy	477	* allocate various perl stacks. This is an exact copy
423	* of perl.c:init_stacks, except that it uses less memory	478	* of perl.c:init_stacks, except that it uses less memory
424	* on the assumption that coroutines do not usually need	479	* on the (sometimes correct) assumption that coroutines do
425	* a lot of stackspace.	480	* not usually need a lot of stackspace.
426	*/	481	*/
427	STATIC void	482	STATIC void
428	coro_init_stacks (pTHX)	483	coro_init_stacks (pTHX)
429	{	484	{
		485	LOCK;
		486
430	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	487	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
431	PL_curstackinfo->si_type = PERLSI_MAIN;	488	PL_curstackinfo->si_type = PERLSI_MAIN;
432	PL_curstack = PL_curstackinfo->si_stack;	489	PL_curstack = PL_curstackinfo->si_stack;
433	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	490	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
434		491
435	PL_stack_base = AvARRAY(PL_curstack);	492	PL_stack_base = AvARRAY(PL_curstack);
436	PL_stack_sp = PL_stack_base;	493	PL_stack_sp = PL_stack_base;
437	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	494	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
438		495
439	New(50,PL_tmps_stack,64,SV*);	496	New(50,PL_tmps_stack,96,SV*);
440	PL_tmps_floor = -1;	497	PL_tmps_floor = -1;
441	PL_tmps_ix = -1;	498	PL_tmps_ix = -1;
442	PL_tmps_max = 64;	499	PL_tmps_max = 96;
443		500
444	New(54,PL_markstack,12,I32);	501	New(54,PL_markstack,16,I32);
445	PL_markstack_ptr = PL_markstack;	502	PL_markstack_ptr = PL_markstack;
446	PL_markstack_max = PL_markstack + 12;	503	PL_markstack_max = PL_markstack + 16;
447		504
		505	#ifdef SET_MARK_OFFSET
448	SET_MARK_OFFSET;	506	SET_MARK_OFFSET;
		507	#endif
449		508
450	New(54,PL_scopestack,12,I32);	509	New(54,PL_scopestack,16,I32);
451	PL_scopestack_ix = 0;	510	PL_scopestack_ix = 0;
452	PL_scopestack_max = 12;	511	PL_scopestack_max = 16;
453		512
454	New(54,PL_savestack,64,ANY);	513	New(54,PL_savestack,96,ANY);
455	PL_savestack_ix = 0;	514	PL_savestack_ix = 0;
456	PL_savestack_max = 64;	515	PL_savestack_max = 96;
457		516
458	New(54,PL_retstack,8,OP*);	517	New(54,PL_retstack,8,OP*);
459	PL_retstack_ix = 0;	518	PL_retstack_ix = 0;
460	PL_retstack_max = 8;	519	PL_retstack_max = 8;
		520
		521	UNLOCK;
461	}	522	}
462		523
463	/*	524	/*
464	* destroy the stacks, the callchain etc...	525	* destroy the stacks, the callchain etc...
465	* still there is a memleak of 128 bytes...
466	*/	526	*/
467	STATIC void	527	STATIC void
468	destroy_stacks(pTHX)	528	destroy_stacks(pTHX)
469	{	529	{
		530	if (!IN_DESTRUCT)
		531	{
470	/* is this ugly, I ask? */	532	/* is this ugly, I ask? */
471	while (PL_scopestack_ix)	533	LEAVE_SCOPE (0);
472	LEAVE;
473		534
474	/* sure it is, but more important: is it correct?? :/ */	535	/* sure it is, but more important: is it correct?? :/ */
475	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
476	FREETMPS;	536	FREETMPS;
		537
		538	/POPSTACK_TO (PL_mainstack);//D//use/
		539	}
477		540
478	while (PL_curstackinfo->si_next)	541	while (PL_curstackinfo->si_next)
479	PL_curstackinfo = PL_curstackinfo->si_next;	542	PL_curstackinfo = PL_curstackinfo->si_next;
480		543
481	while (PL_curstackinfo)	544	while (PL_curstackinfo)
482	{	545	{
483	PERL_SI *p = PL_curstackinfo->si_prev;	546	PERL_SI *p = PL_curstackinfo->si_prev;
484		547
485	{	548	{ /D//remove/
486	dSP;	549	dSP;
487	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	550	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
488	PUTBACK; /* possibly superfluous */	551	PUTBACK; /* possibly superfluous */
489	}	552	}
490		553
491	dounwind(-1);	554	if (!IN_DESTRUCT)
492		555	{
		556	dounwind (-1);/D//remove/
493	SvREFCNT_dec(PL_curstackinfo->si_stack);	557	SvREFCNT_dec (PL_curstackinfo->si_stack);
		558	}
		559
494	Safefree(PL_curstackinfo->si_cxstack);	560	Safefree (PL_curstackinfo->si_cxstack);
495	Safefree(PL_curstackinfo);	561	Safefree (PL_curstackinfo);
496	PL_curstackinfo = p;	562	PL_curstackinfo = p;
497	}	563	}
498		564
499	Safefree(PL_tmps_stack);	565	Safefree (PL_tmps_stack);
500	Safefree(PL_markstack);	566	Safefree (PL_markstack);
501	Safefree(PL_scopestack);	567	Safefree (PL_scopestack);
502	Safefree(PL_savestack);	568	Safefree (PL_savestack);
503	Safefree(PL_retstack);	569	Safefree (PL_retstack);
504	}	570	}
505		571
506	static void	572	static void
507	allocate_stack (Coro__State ctx)	573	allocate_stack (Coro__State ctx, int alloc)
508	{	574	{
		575	coro_stack *stack;
		576
		577	New (0, stack, 1, coro_stack);
		578
		579	stack->refcnt = 1;
		580	stack->usecnt = 1;
		581	stack->gencnt = ctx->gencnt = 0;
		582
		583	if (alloc)
		584	{
509	#ifdef HAVE_MMAP	585	#if HAVE_MMAP
510	ctx->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */	586	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
511	ctx->sptr = mmap (0, ctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	587	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
512	if (ctx->sptr == (void *)-1)	588	if (stack->sptr == (void *)-1)
513	#endif	589	#endif
514	{	590	{
515	/FIXME//D//* reasonable stack size! */	591	/FIXME//D//* reasonable stack size! */
516	ctx->ssize = 4096 * sizeof (long);	592	stack->ssize = - (8192 * sizeof (long));
517	New (0, ctx->sptr, 4096, long);	593	New (0, stack->sptr, 8192, long);
		594	}
518	}	595	}
		596	else
		597	stack->sptr = 0;
		598
		599	ctx->stack = stack;
519	}	600	}
520		601
521	static void	602	static void
522	deallocate_stack (Coro__State ctx)	603	deallocate_stack (Coro__State ctx)
523	{	604	{
		605	coro_stack *stack = ctx->stack;
		606
		607	ctx->stack = 0;
		608
		609	if (stack)
		610	{
		611	if (!--stack->refcnt)
		612	{
524	#ifdef HAVE_MMAP	613	#ifdef HAVE_MMAP
525	munmap (ctx->sptr, ctx->ssize);	614	if (stack->ssize > 0 && stack->sptr)
526	#else	615	munmap (stack->sptr, stack->ssize);
527	Safefree (ctx->sptr);	616	else
528	#endif	617	#endif
529	}	618	Safefree (stack->sptr);
530		619
531	/* might go away together with optional SAVE_CCTXT */	620	Safefree (stack);
		621	}
		622	else if (ctx->gencnt == stack->gencnt)
		623	--stack->usecnt;
		624	}
		625	}
		626
532	static void	627	static void
533	setup_coro (void *arg)	628	setup_coro (void *arg)
534	{	629	{
535	/*	630	/*
536	* emulate part of the perl startup here.	631	* emulate part of the perl startup here.
537	*/	632	*/
		633	dTHX;
538	dSP;	634	dSP;
539	Coro__State ctx = (Coro__State)arg;	635	Coro__State ctx = (Coro__State)arg;
540	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	636	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
541		637
542	coro_init_stacks (aTHX);	638	coro_init_stacks (aTHX);
543	JMPENV_BOOTSTRAP;	639	/PL_curcop = 0;/
		640	/PL_in_eval = PL_in_eval;/ /* inherit */
		641	SvREFCNT_dec (GvAV (PL_defgv));
		642	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		643
544	SPAGAIN;	644	SPAGAIN;
545		645
546	/PL_curcop = 0;/
547	SvREFCNT_dec (GvAV (PL_defgv));
548	GvAV (PL_defgv) = ctx->args;
549
550	if (ctx->sptr)	646	if (ctx->stack)
551	{	647	{
		648	ctx->cursp = 0;
		649
552	PUSHMARK(SP);	650	PUSHMARK(SP);
553	PUTBACK;	651	PUTBACK;
554	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	652	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		653
		654	if (SvTRUE (ERRSV))
		655	croak (NULL);
		656	else
555	croak ("FATAL: CCTXT coroutine returned!");	657	croak ("FATAL: CCTXT coroutine returned!");
556	}	658	}
557	else	659	else
558	{	660	{
559	UNOP myop;	661	UNOP myop;
560		662
…		…
572	* that doesn't matter, though, since it is only	674	* that doesn't matter, though, since it is only
573	* pp_nextstate and we never return...	675	* pp_nextstate and we never return...
574	* ah yes, and I don't care anyways ;)	676	* ah yes, and I don't care anyways ;)
575	*/	677	*/
576	PUTBACK;	678	PUTBACK;
577	PL_op = pp_entersub();	679	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
578	SPAGAIN;	680	SPAGAIN;
579		681
580	ENTER; /* necessary e.g. for dounwind */	682	ENTER; /* necessary e.g. for dounwind */
581	}	683	}
582	}	684	}
583		685
		686	static void
		687	continue_coro (void *arg)
		688	{
		689	/*
		690	* this is a _very_ stripped down perl interpreter ;)
		691	*/
		692	dTHX;
		693	Coro__State ctx = (Coro__State)arg;
		694	JMPENV coro_start_env;
		695
		696	PL_top_env = &ctx->start_env;
		697
		698	ctx->cursp = 0;
		699	PL_op = PL_op->op_next;
		700	CALLRUNOPS(aTHX);
		701
		702	abort ();
		703	}
		704
584	STATIC void	705	STATIC void
585	transfer(pTHX_ struct coro prev, struct coro next, int flags)	706	transfer (pTHX_ struct coro prev, struct coro next, int flags)
586	{	707	{
587	dSP;	708	dSTACKLEVEL;
588		709
589	if (prev != next)	710	if (prev != next)
590	{	711	{
591	/*
592	* this could be done in newprocess which would lead to
593	* extremely elegant and fast (basically just SAVE/LOAD)
594	* code here, but lazy allocation of stacks has also
595	* some virtues and the overhead of the if() is nil.
596	*/
597	if (next->mainstack)	712	if (next->mainstack)
598	{	713	{
		714	LOCK;
599	SAVE (prev, flags);	715	SAVE (prev, flags);
600	LOAD (next);	716	LOAD (next);
		717	UNLOCK;
601		718
602	/* mark this state as in-use */	719	/* mark this state as in-use */
603	next->mainstack = 0;	720	next->mainstack = 0;
604	next->tmps_ix = -2;	721	next->tmps_ix = -2;
605		722
		723	/* stacklevel changed? if yes, grab the stack for us! */
606	if (flags & TRANSFER_SAVE_CCTXT)	724	if (flags & TRANSFER_SAVE_CCTXT)
607	{	725	{
608	if (!next->ssize)
609	croak ("destination coroutine has no CCTXT (%p, %d)", next->sptr, next->ssize);
610
611	if (!prev->ssize)	726	if (!prev->stack)
612	prev->ssize = 1; /* mark cctx as valid ;) */	727	allocate_stack (prev, 0);
		728	else if (prev->cursp != stacklevel
		729	&& prev->stack->usecnt > 1)
		730	{
		731	prev->gencnt = ++prev->stack->gencnt;
		732	prev->stack->usecnt = 1;
		733	}
613		734
		735	/* has our stack been invalidated? */
		736	if (next->stack && next->stack->gencnt != next->gencnt)
		737	{
		738	deallocate_stack (next);
		739	allocate_stack (next, 1);
		740	coro_create (&(next->stack->cctx),
		741	continue_coro, (void *)next,
		742	next->stack->sptr, labs (next->stack->ssize));
		743	}
		744
614	coro_transfer (&(prev->cctx), &(next->cctx));	745	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		746	prev->cursp = stacklevel;
		747	/* don't add any code here */
615	}	748	}
616		749	else
		750	next->cursp = stacklevel;
617	}	751	}
618	else if (next->tmps_ix == -2)	752	else if (next->tmps_ix == -2)
619	croak ("tried to transfer to running coroutine");	753	croak ("tried to transfer to running coroutine");
620	else	754	else
621	{	755	{
		756	LOCK;
622	SAVE (prev, -1); /* first get rid of the old state */	757	SAVE (prev, -1); /* first get rid of the old state */
		758	UNLOCK;
623		759
624	if (flags & TRANSFER_SAVE_CCTXT)	760	if (flags & TRANSFER_SAVE_CCTXT)
625	{	761	{
626	if (!next->ssize)	762	if (!prev->stack)
		763	allocate_stack (prev, 0);
		764
		765	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
627	{	766	{
		767	PL_top_env = &next->start_env;
		768
		769	setup_coro (next);
		770	next->cursp = stacklevel;
		771
		772	prev->stack->refcnt++;
		773	prev->stack->usecnt++;
		774	next->stack = prev->stack;
		775	next->gencnt = prev->gencnt;
		776	}
		777	else
		778	{
		779	assert (!next->stack);
628	allocate_stack (next);	780	allocate_stack (next, 1);
629	coro_create (&(next->cctx),	781	coro_create (&(next->stack->cctx),
630	setup_coro, (void *)next,	782	setup_coro, (void *)next,
631	next->sptr, next->ssize);	783	next->stack->sptr, labs (next->stack->ssize));
		784	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		785	prev->cursp = stacklevel;
		786	/* don't add any code here */
632	}	787	}
633
634	if (!prev->ssize)
635	prev->ssize = 1; /* mark cctx as valid ;) */
636
637	coro_transfer (&(prev->cctx), &(next->cctx));
638	}	788	}
639	else	789	else
		790	{
640	setup_coro (next);	791	setup_coro (next);
		792	next->cursp = stacklevel;
		793	}
641	}	794	}
642	}	795	}
		796
		797	LOCK;
		798	if (coro_mortal)
		799	{
		800	SvREFCNT_dec (coro_mortal);
		801	coro_mortal = 0;
		802	}
		803	UNLOCK;
		804	}
		805
		806	#define SV_CORO(sv,func) \
		807	do { \
		808	if (SvROK (sv)) \
		809	sv = SvRV (sv); \
		810	\
		811	if (SvTYPE (sv) == SVt_PVHV) \
		812	{ \
		813	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		814	\
		815	if (!he) \
		816	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		817	\
		818	(sv) = SvRV (HeVAL(he)); \
		819	} \
		820	\
		821	/* must also be changed inside Coro::Cont::yield */ \
		822	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		823	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		824	\
		825	} while(0)
		826
		827	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		828
		829	static void
		830	api_transfer(pTHX_ SV prev, SV next, int flags)
		831	{
		832	SV_CORO (prev, "Coro::transfer");
		833	SV_CORO (next, "Coro::transfer");
		834
		835	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		836	}
		837
		838	/ Coro ******************************************************************/
		839
		840	#define PRIO_MAX 3
		841	#define PRIO_HIGH 1
		842	#define PRIO_NORMAL 0
		843	#define PRIO_LOW -1
		844	#define PRIO_IDLE -3
		845	#define PRIO_MIN -4
		846
		847	/* for Coro.pm */
		848	static GV coro_current, coro_idle;
		849	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		850	static int coro_nready;
		851
		852	static void
		853	coro_enq (pTHX_ SV *sv)
		854	{
		855	if (SvTYPE (sv) == SVt_PVHV)
		856	{
		857	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		858	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		859
		860	prio = prio > PRIO_MAX ? PRIO_MAX
		861	: prio < PRIO_MIN ? PRIO_MIN
		862	: prio;
		863
		864	av_push (coro_ready [prio - PRIO_MIN], sv);
		865	coro_nready++;
		866
		867	return;
		868	}
		869
		870	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		871	}
		872
		873	static SV *
		874	coro_deq (pTHX_ int min_prio)
		875	{
		876	int prio = PRIO_MAX - PRIO_MIN;
		877
		878	min_prio -= PRIO_MIN;
		879	if (min_prio < 0)
		880	min_prio = 0;
		881
		882	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		883	if (av_len (coro_ready[prio]) >= 0)
		884	{
		885	coro_nready--;
		886	return av_shift (coro_ready[prio]);
		887	}
		888
		889	return 0;
		890	}
		891
		892	static void
		893	api_ready (SV *coro)
		894	{
		895	dTHX;
		896
		897	if (SvROK (coro))
		898	coro = SvRV (coro);
		899
		900	LOCK;
		901	coro_enq (aTHX_ SvREFCNT_inc (coro));
		902	UNLOCK;
		903	}
		904
		905	static void
		906	api_schedule (void)
		907	{
		908	dTHX;
		909
		910	SV prev, next;
		911
		912	LOCK;
		913
		914	prev = SvRV (GvSV (coro_current));
		915	next = coro_deq (aTHX_ PRIO_MIN);
		916
		917	if (!next)
		918	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		919
		920	/* free this only after the transfer */
		921	coro_mortal = prev;
		922	SV_CORO (prev, "Coro::schedule");
		923
		924	SvRV (GvSV (coro_current)) = next;
		925
		926	SV_CORO (next, "Coro::schedule");
		927
		928	UNLOCK;
		929
		930	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		931	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		932	}
		933
		934	static void
		935	api_cede (void)
		936	{
		937	dTHX;
		938
		939	LOCK;
		940	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		941	UNLOCK;
		942
		943	api_schedule ();
643	}	944	}
644		945
645	MODULE = Coro::State PACKAGE = Coro::State	946	MODULE = Coro::State PACKAGE = Coro::State
646		947
647	PROTOTYPES: ENABLE	948	PROTOTYPES: ENABLE
648		949
649	BOOT:	950	BOOT:
650	{ /* {} necessary for stoopid perl-5.6.x */	951	{ /* {} necessary for stoopid perl-5.6.x */
		952	#ifdef USE_ITHREADS
		953	MUTEX_INIT (&coro_mutex);
		954	#endif
		955
		956	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
		957	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
651	coro_state_stash = gv_stashpvn ("Coro::State", 10, TRUE);	958	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
652		959
653	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	960	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
654	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	961	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
655	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	962	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
656	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	963	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
657		964
658	if (!padlist_cache)
659	padlist_cache = newHV ();
660
661	main_mainstack = PL_mainstack;	965	main_mainstack = PL_mainstack;
		966
		967	coroapi.ver = CORO_API_VERSION;
		968	coroapi.transfer = api_transfer;
662	}	969	}
663		970
664	Coro::State	971	Coro::State
665	_newprocess(args)	972	_newprocess(args)
666	SV * args	973	SV * args
…		…
669	Coro__State coro;	976	Coro__State coro;
670		977
671	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	978	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
672	croak ("Coro::State::_newprocess expects an arrayref");	979	croak ("Coro::State::_newprocess expects an arrayref");
673		980
674	New (0, coro, 1, struct coro);	981	Newz (0, coro, 1, struct coro);
675		982
676	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	983	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
677	coro->mainstack = 0; /* actual work is done inside transfer */	984	coro->mainstack = 0; /* actual work is done inside transfer */
678	coro->sptr = 0;	985	coro->stack = 0;
679	coro->ssize = 0;	986
		987	/* same as JMPENV_BOOTSTRAP */
		988	/* we might be able to recycle start_env, but safe is safe */
		989	//Zero(&coro->start_env, 1, JMPENV);
		990	coro->start_env.je_ret = -1;
		991	coro->start_env.je_mustcatch = TRUE;
680		992
681	RETVAL = coro;	993	RETVAL = coro;
682	OUTPUT:	994	OUTPUT:
683	RETVAL	995	RETVAL
684		996
685	void	997	void
686	transfer(prev, next, flags = TRANSFER_SAVE_ALL)	998	transfer(prev, next, flags)
687	Coro::State_or_hashref prev	999	SV *prev
688	Coro::State_or_hashref next	1000	SV *next
689	int flags	1001	int flags
690	PROTOTYPE: @	1002	PROTOTYPE: @
691	CODE:	1003	CODE:
		1004	PUTBACK;
		1005	SV_CORO (next, "Coro::transfer");
		1006	SV_CORO (prev, "Coro::transfer");
692	transfer (aTHX_ prev, next, flags);	1007	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		1008	SPAGAIN;
693		1009
694	void	1010	void
695	DESTROY(coro)	1011	DESTROY(coro)
696	Coro::State coro	1012	Coro::State coro
697	CODE:	1013	CODE:
698		1014
699	if (coro->mainstack && coro->mainstack != main_mainstack)	1015	if (coro->mainstack && coro->mainstack != main_mainstack)
700	{	1016	{
701	struct coro temp;	1017	struct coro temp;
702		1018
		1019	PUTBACK;
703	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1020	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
704	LOAD(aTHX_ coro);	1021	LOAD(aTHX_ coro);
		1022	SPAGAIN;
705		1023
706	destroy_stacks (aTHX);	1024	destroy_stacks (aTHX);
707		1025
708	LOAD((&temp)); /* this will get rid of defsv etc.. */	1026	LOAD((&temp)); /* this will get rid of defsv etc.. */
		1027	SPAGAIN;
709		1028
710	coro->mainstack = 0;	1029	coro->mainstack = 0;
711	}	1030	}
712		1031
713	if (coro->sptr)
714	{
715	deallocate_stack (coro);	1032	deallocate_stack (coro);
716	coro->sptr = 0;	1033	SvREFCNT_dec (coro->args);
717	}
718
719	Safefree (coro);	1034	Safefree (coro);
720		1035
721	void	1036	void
722	flush()	1037	_exit(code)
		1038	int code
		1039	PROTOTYPE: $
723	CODE:	1040	CODE:
724	#ifdef MAY_FLUSH	1041	_exit (code);
725	flush_padlist_cache ();
726	#endif
727		1042
728	MODULE = Coro::State PACKAGE = Coro::Cont	1043	MODULE = Coro::State PACKAGE = Coro::Cont
729		1044
730	# this is slightly dirty	1045	# this is slightly dirty (should expose a c-level api)
731		1046
732	void	1047	void
733	yield(...)	1048	yield(...)
734	PROTOTYPE: @	1049	PROTOTYPE: @
735	CODE:	1050	CODE:
…		…
737	SV *sv;	1052	SV *sv;
738	AV *defav = GvAV (PL_defgv);	1053	AV *defav = GvAV (PL_defgv);
739	struct coro prev, next;	1054	struct coro prev, next;
740		1055
741	if (!returnstk)	1056	if (!returnstk)
742	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1057	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
743		1058
744	/* set up @_ -- ugly */	1059	/* set up @_ -- ugly */
745	av_clear (defav);	1060	av_clear (defav);
746	av_fill (defav, items - 1);	1061	av_fill (defav, items - 1);
747	while (items--)	1062	while (items--)
…		…
753	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1068	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
754	SvREFCNT_dec (sv);	1069	SvREFCNT_dec (sv);
755		1070
756	transfer(aTHX_ prev, next, 0);	1071	transfer(aTHX_ prev, next, 0);
757		1072
		1073	MODULE = Coro::State PACKAGE = Coro
		1074
		1075	# this is slightly dirty (should expose a c-level api)
		1076
		1077	BOOT:
		1078	{
		1079	int i;
		1080	HV *stash = gv_stashpv ("Coro", TRUE);
		1081
		1082	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1083	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1084	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1085	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1086	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1087	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1088
		1089	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1090	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1091
		1092	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1093	coro_ready[i] = newAV ();
		1094
		1095	{
		1096	SV *sv = perl_get_sv("Coro::API", 1);
		1097
		1098	coroapi.schedule = api_schedule;
		1099	coroapi.cede = api_cede;
		1100	coroapi.ready = api_ready;
		1101	coroapi.nready = &coro_nready;
		1102	coroapi.current = coro_current;
		1103
		1104	GCoroAPI = &coroapi;
		1105	sv_setiv(sv, (IV)&coroapi);
		1106	SvREADONLY_on(sv);
		1107	}
		1108	}
		1109
		1110	#if !PERL_MICRO
		1111
		1112	void
		1113	ready(self)
		1114	SV * self
		1115	PROTOTYPE: $
		1116	CODE:
		1117	api_ready (self);
		1118
		1119	#endif
		1120
		1121	int
		1122	nready(...)
		1123	PROTOTYPE:
		1124	CODE:
		1125	RETVAL = coro_nready;
		1126	OUTPUT:
		1127	RETVAL
		1128
		1129	void
		1130	schedule(...)
		1131	PROTOTYPE:
		1132	CODE:
		1133	api_schedule ();
		1134
		1135	void
		1136	cede(...)
		1137	PROTOTYPE:
		1138	CODE:
		1139	api_cede ();
		1140

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Comparing Coro/Coro/State.xs (file contents): Revision 1.13 by root, Mon Jul 23 22:09:39 2001 UTC vs. Revision 1.58 by pcg, Fri May 14 13:25:09 2004 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.13 by root, Mon Jul 23 22:09:39 2001 UTC vs.
Revision 1.58 by pcg, Fri May 14 13:25:09 2004 UTC