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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.14 by root, Mon Jul 23 23:48:05 2001 UTC vs.
Revision 1.65 by root, Mon Dec 5 23:50:48 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 <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	#define TRANSFER_SAVE_DEFAV 0x00000001
15	#define TRANSFER_SAVE_DEFSV 0x00000002
16	#define TRANSFER_SAVE_ERRSV 0x00000004
17	#define TRANSFER_SAVE_CCTXT 0x00000008
18
19	#define TRANSFER_SAVE_ALL -1
20		45
21	#define SUB_INIT "Coro::State::initialize"	46	#define SUB_INIT "Coro::State::initialize"
22	#define UCORO_STATE "_coro_state"	47	#define UCORO_STATE "_coro_state"
23		48
		49	/* The next macro should declare a variable stacklevel that contains and approximation
		50	* to the current C stack pointer. Its property is that it changes with each call
		51	* and should be unique. */
		52	#define dSTACKLEVEL void *stacklevel = &stacklevel
		53
		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;
		87
24	struct coro {	88	struct coro {
		89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		90	JMPENV start_env;
		91
25	/* the optional C context */	92	/* the optional C context */
26	coro_context cctx;	93	coro_stack *stack;
27	void *sptr;	94	void *cursp;
28	long ssize;	95	int gencnt;
29		96
30	/* optionally saved, might be zero */	97	/* optionally saved, might be zero */
31	AV *defav;	98	AV *defav;
32	SV *defsv;	99	SV *defsv;
33	SV *errsv;	100	SV *errsv;
34		101
35	/* saved global state not related to stacks */	102	/* saved global state not related to stacks */
36	U8 dowarn;	103	U8 dowarn;
		104	I32 in_eval;
37		105
38	/* the stacks and related info (callchain etc..) */	106	/* the stacks and related info (callchain etc..) */
39	PERL_SI *curstackinfo;	107	PERL_SI *curstackinfo;
40	AV *curstack;	108	AV *curstack;
41	AV *mainstack;	109	AV *mainstack;
42	SV **stack_sp;	110	SV **stack_sp;
43	OP *op;	111	OP *op;
44	SV **curpad;	112	SV **curpad;
		113	AV *comppad;
		114	CV *compcv;
45	SV **stack_base;	115	SV **stack_base;
46	SV **stack_max;	116	SV **stack_max;
47	SV **tmps_stack;	117	SV **tmps_stack;
48	I32 tmps_floor;	118	I32 tmps_floor;
49	I32 tmps_ix;	119	I32 tmps_ix;
59	I32 savestack_max;	129	I32 savestack_max;
60	OP **retstack;	130	OP **retstack;
61	I32 retstack_ix;	131	I32 retstack_ix;
62	I32 retstack_max;	132	I32 retstack_max;
63	COP *curcop;	133	COP *curcop;
64	JMPENV start_env;
65	JMPENV *top_env;	134	JMPENV *top_env;
66		135
67	/* data associated with this coroutine (initial args) */	136	/* data associated with this coroutine (initial args) */
68	AV *args;	137	AV *args;
69	};	138	};
70		139
71	typedef struct coro *Coro__State;	140	typedef struct coro *Coro__State;
72	typedef struct coro *Coro__State_or_hashref;	141	typedef struct coro *Coro__State_or_hashref;
73		142
74	static AV main_mainstack; / used to differentiate between $main and others */
75	static HV *coro_state_stash;
76	static SV *ucoro_state_sv;
77	static U32 ucoro_state_hash;
78	static HV *padlist_cache;
79
80	/* mostly copied from op.c:cv_clone2 */	143	/* mostly copied from op.c:cv_clone2 */
81	STATIC AV *	144	STATIC AV *
82	clone_padlist (AV *protopadlist)	145	clone_padlist (pTHX_ AV *protopadlist)
83	{	146	{
84	AV *av;	147	AV *av;
85	I32 ix;	148	I32 ix;
86	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	149	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
87	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	150	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
111	AvFLAGS (av) = AVf_REIFY;	174	AvFLAGS (av) = AVf_REIFY;
112		175
113	for (ix = fpad; ix > 0; ix--)	176	for (ix = fpad; ix > 0; ix--)
114	{	177	{
115	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	178	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		179
116	if (namesv && namesv != &PL_sv_undef)	180	if (namesv && namesv != &PL_sv_undef)
117	{	181	{
118	char name = SvPVX (namesv); / XXX */	182	char name = SvPVX (namesv); / XXX */
		183
119	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	184	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
120	{ /* lexical from outside? */	185	{ /* lexical from outside? */
121	npad[ix] = SvREFCNT_inc (ppad[ix]);	186	npad[ix] = SvREFCNT_inc (ppad[ix]);
122	}	187	}
123	else	188	else
…		…
129	sv = (SV *) newAV ();	194	sv = (SV *) newAV ();
130	else if (*name == '%')	195	else if (*name == '%')
131	sv = (SV *) newHV ();	196	sv = (SV *) newHV ();
132	else	197	else
133	sv = NEWSV (0, 0);	198	sv = NEWSV (0, 0);
		199
		200	#ifdef SvPADBUSY
134	if (!SvPADBUSY (sv))	201	if (!SvPADBUSY (sv))
		202	#endif
135	SvPADMY_on (sv);	203	SvPADMY_on (sv);
		204
136	npad[ix] = sv;	205	npad[ix] = sv;
137	}	206	}
138	}	207	}
139	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	208	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
140	{	209	{
…		…
169	#endif	238	#endif
170		239
171	return newpadlist;	240	return newpadlist;
172	}	241	}
173		242
174	#ifdef MAY_FLUSH	243	STATIC void
175	STATIC AV *
176	free_padlist (AV *padlist)	244	free_padlist (pTHX_ AV *padlist)
177	{	245	{
178	/* may be during global destruction */	246	/* may be during global destruction */
179	if (SvREFCNT(padlist))	247	if (SvREFCNT (padlist))
180	{	248	{
181	I32 i = AvFILLp(padlist);	249	I32 i = AvFILLp (padlist);
182	while (i >= 0)	250	while (i >= 0)
183	{	251	{
184	SV **svp = av_fetch(padlist, i--, FALSE);	252	SV **svp = av_fetch (padlist, i--, FALSE);
185	SV sv = svp ? svp : Nullsv;
186	if (sv)	253	if (svp)
		254	{
		255	SV *sv;
		256	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
187	SvREFCNT_dec(sv);	257	SvREFCNT_dec (sv);
		258
		259	SvREFCNT_dec (*svp);
		260	}
188	}	261	}
189		262
190	SvREFCNT_dec((SV*)padlist);	263	SvREFCNT_dec ((SV*)padlist);
191	}	264	}
192	}	265	}
193	#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};
194		283
195	/* the next two functions merely cache the padlists */	284	/* the next two functions merely cache the padlists */
196	STATIC void	285	STATIC void
197	get_padlist (CV *cv)	286	get_padlist (pTHX_ CV *cv)
198	{	287	{
199	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	288	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
200		289
201	if (he && AvFILLp ((AV )he) >= 0)	290	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
202	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	291	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
203	else	292	else
204	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	293	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
205	}	294	}
206		295
207	STATIC void	296	STATIC void
208	put_padlist (CV *cv)	297	put_padlist (pTHX_ CV *cv)
209	{	298	{
210	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	299	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
211		300
212	if (SvTYPE (*he) != SVt_PVAV)	301	if (!mg)
213	{	302	{
214	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;
215	he = (SV )newAV ();	306	mg->mg_obj = (SV *)newAV ();
216	}	307	}
217		308
218	av_push ((AV )he, (SV *)CvPADLIST (cv));	309	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
219	}	310	}
220
221	#ifdef MAY_FLUSH
222	STATIC void
223	flush_padlist_cache ()
224	{
225	HV *hv = padlist_cache;
226	padlist_cache = newHV ();
227
228	if (hv_iterinit (hv))
229	{
230	HE *he;
231	AV *padlist;
232
233	while (!!(he = hv_iternext (hv)))
234	{
235	AV av = (AV )HeVAL(he);
236
237	/* casting is fun. */
238	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
239	free_padlist (padlist);
240	}
241	}
242
243	SvREFCNT_dec (hv);
244	}
245	#endif
246		311
247	#define SB do {	312	#define SB do {
248	#define SE } while (0)	313	#define SE } while (0)
249		314
250	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	315	#define LOAD(state) load_state(aTHX_ (state));
251	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	316	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
252		317
253	#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
254		319
255	static void	320	static void
256	load_state(pTHX_ Coro__State c)	321	load_state(pTHX_ Coro__State c)
257	{	322	{
258	PL_dowarn = c->dowarn;	323	PL_dowarn = c->dowarn;
		324	PL_in_eval = c->in_eval;
259		325
260	PL_curstackinfo = c->curstackinfo;	326	PL_curstackinfo = c->curstackinfo;
261	PL_curstack = c->curstack;	327	PL_curstack = c->curstack;
262	PL_mainstack = c->mainstack;	328	PL_mainstack = c->mainstack;
263	PL_stack_sp = c->stack_sp;	329	PL_stack_sp = c->stack_sp;
264	PL_op = c->op;	330	PL_op = c->op;
265	PL_curpad = c->curpad;	331	PL_curpad = c->curpad;
		332	PL_comppad = c->comppad;
		333	PL_compcv = c->compcv;
266	PL_stack_base = c->stack_base;	334	PL_stack_base = c->stack_base;
267	PL_stack_max = c->stack_max;	335	PL_stack_max = c->stack_max;
268	PL_tmps_stack = c->tmps_stack;	336	PL_tmps_stack = c->tmps_stack;
269	PL_tmps_floor = c->tmps_floor;	337	PL_tmps_floor = c->tmps_floor;
270	PL_tmps_ix = c->tmps_ix;	338	PL_tmps_ix = c->tmps_ix;
…		…
280	PL_savestack_max = c->savestack_max;	348	PL_savestack_max = c->savestack_max;
281	PL_retstack = c->retstack;	349	PL_retstack = c->retstack;
282	PL_retstack_ix = c->retstack_ix;	350	PL_retstack_ix = c->retstack_ix;
283	PL_retstack_max = c->retstack_max;	351	PL_retstack_max = c->retstack_max;
284	PL_curcop = c->curcop;	352	PL_curcop = c->curcop;
285	PL_start_env = c->start_env;
286	PL_top_env = c->top_env;	353	PL_top_env = c->top_env;
287		354
288	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	355	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
289	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	356	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
290	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	357	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
298	{	365	{
299	AV padlist = (AV )POPs;	366	AV padlist = (AV )POPs;
300		367
301	if (padlist)	368	if (padlist)
302	{	369	{
303	put_padlist (cv); /* mark this padlist as available */	370	put_padlist (aTHX_ cv); /* mark this padlist as available */
304	CvPADLIST(cv) = padlist;	371	CvPADLIST(cv) = padlist;
305	#ifdef USE_THREADS
306	/CvOWNER(cv) = (struct perl_thread )POPs;*/
307	#endif
308	}	372	}
309		373
310	++CvDEPTH(cv);	374	++CvDEPTH(cv);
311	}	375	}
312		376
…		…
330		394
331	PUSHs (Nullsv);	395	PUSHs (Nullsv);
332	/* this loop was inspired by pp_caller */	396	/* this loop was inspired by pp_caller */
333	for (;;)	397	for (;;)
334	{	398	{
335	do	399	while (cxix >= 0)
336	{	400	{
337	PERL_CONTEXT *cx = &ccstk[cxix--];	401	PERL_CONTEXT *cx = &ccstk[cxix--];
338		402
339	if (CxTYPE(cx) == CXt_SUB)	403	if (CxTYPE(cx) == CXt_SUB)
340	{	404	{
341	CV *cv = cx->blk_sub.cv;	405	CV *cv = cx->blk_sub.cv;
342	if (CvDEPTH(cv))	406	if (CvDEPTH(cv))
343	{	407	{
344	#ifdef USE_THREADS
345	/XPUSHs ((SV )CvOWNER(cv));*/
346	/CvOWNER(cv) = 0;/
347	/error must unlock this cv etc.. etc.../
348	#endif
349	EXTEND (SP, CvDEPTH(cv)*2);	408	EXTEND (SP, CvDEPTH(cv)*2);
350		409
351	while (--CvDEPTH(cv))	410	while (--CvDEPTH(cv))
352	{	411	{
353	/* this tells the restore code to increment CvDEPTH */	412	/* this tells the restore code to increment CvDEPTH */
…		…
356	}	415	}
357		416
358	PUSHs ((SV *)CvPADLIST(cv));	417	PUSHs ((SV *)CvPADLIST(cv));
359	PUSHs ((SV *)cv);	418	PUSHs ((SV *)cv);
360		419
361	get_padlist (cv); /* this is a monster */	420	get_padlist (aTHX_ cv); /* this is a monster */
362	}	421	}
363	}	422	}
		423	#ifdef CXt_FORMAT
364	else if (CxTYPE(cx) == CXt_FORMAT)	424	else if (CxTYPE(cx) == CXt_FORMAT)
365	{	425	{
366	/* 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? */
367	/* my bold guess is as a simple, plain sub... */	427	/* my bold guess is as a simple, plain sub... */
368	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");
369	}	429	}
		430	#endif
370	}	431	}
371	while (cxix >= 0);
372		432
373	if (top_si->si_type == PERLSI_MAIN)	433	if (top_si->si_type == PERLSI_MAIN)
374	break;	434	break;
375		435
376	top_si = top_si->si_prev;	436	top_si = top_si->si_prev;
…		…
383		443
384	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;
385	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	445	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
386	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	446	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
387		447
388	/* I have not the slightest idea of why av_reify is necessary */
389	/* but if it's missing the defav contents magically get replaced sometimes */
390	if (c->defav)
391	av_reify (c->defav);
392
393	c->dowarn = PL_dowarn;	448	c->dowarn = PL_dowarn;
		449	c->in_eval = PL_in_eval;
394		450
395	c->curstackinfo = PL_curstackinfo;	451	c->curstackinfo = PL_curstackinfo;
396	c->curstack = PL_curstack;	452	c->curstack = PL_curstack;
397	c->mainstack = PL_mainstack;	453	c->mainstack = PL_mainstack;
398	c->stack_sp = PL_stack_sp;	454	c->stack_sp = PL_stack_sp;
399	c->op = PL_op;	455	c->op = PL_op;
400	c->curpad = PL_curpad;	456	c->curpad = PL_curpad;
		457	c->comppad = PL_comppad;
		458	c->compcv = PL_compcv;
401	c->stack_base = PL_stack_base;	459	c->stack_base = PL_stack_base;
402	c->stack_max = PL_stack_max;	460	c->stack_max = PL_stack_max;
403	c->tmps_stack = PL_tmps_stack;	461	c->tmps_stack = PL_tmps_stack;
404	c->tmps_floor = PL_tmps_floor;	462	c->tmps_floor = PL_tmps_floor;
405	c->tmps_ix = PL_tmps_ix;	463	c->tmps_ix = PL_tmps_ix;
…		…
415	c->savestack_max = PL_savestack_max;	473	c->savestack_max = PL_savestack_max;
416	c->retstack = PL_retstack;	474	c->retstack = PL_retstack;
417	c->retstack_ix = PL_retstack_ix;	475	c->retstack_ix = PL_retstack_ix;
418	c->retstack_max = PL_retstack_max;	476	c->retstack_max = PL_retstack_max;
419	c->curcop = PL_curcop;	477	c->curcop = PL_curcop;
420	c->start_env = PL_start_env;
421	c->top_env = PL_top_env;	478	c->top_env = PL_top_env;
422	}	479	}
423		480
424	/*	481	/*
425	* allocate various perl stacks. This is an exact copy	482	* allocate various perl stacks. This is an exact copy
426	* of perl.c:init_stacks, except that it uses less memory	483	* of perl.c:init_stacks, except that it uses less memory
427	* on the assumption that coroutines do not usually need	484	* on the (sometimes correct) assumption that coroutines do
428	* a lot of stackspace.	485	* not usually need a lot of stackspace.
429	*/	486	*/
430	STATIC void	487	STATIC void
431	coro_init_stacks (pTHX)	488	coro_init_stacks (pTHX)
432	{	489	{
		490	LOCK;
		491
433	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	492	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
434	PL_curstackinfo->si_type = PERLSI_MAIN;	493	PL_curstackinfo->si_type = PERLSI_MAIN;
435	PL_curstack = PL_curstackinfo->si_stack;	494	PL_curstack = PL_curstackinfo->si_stack;
436	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	495	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
437		496
438	PL_stack_base = AvARRAY(PL_curstack);	497	PL_stack_base = AvARRAY(PL_curstack);
439	PL_stack_sp = PL_stack_base;	498	PL_stack_sp = PL_stack_base;
440	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	499	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
441		500
442	New(50,PL_tmps_stack,64,SV*);	501	New(50,PL_tmps_stack,96,SV*);
443	PL_tmps_floor = -1;	502	PL_tmps_floor = -1;
444	PL_tmps_ix = -1;	503	PL_tmps_ix = -1;
445	PL_tmps_max = 64;	504	PL_tmps_max = 96;
446		505
447	New(54,PL_markstack,12,I32);	506	New(54,PL_markstack,16,I32);
448	PL_markstack_ptr = PL_markstack;	507	PL_markstack_ptr = PL_markstack;
449	PL_markstack_max = PL_markstack + 12;	508	PL_markstack_max = PL_markstack + 16;
450		509
		510	#ifdef SET_MARK_OFFSET
451	SET_MARK_OFFSET;	511	SET_MARK_OFFSET;
		512	#endif
452		513
453	New(54,PL_scopestack,12,I32);	514	New(54,PL_scopestack,16,I32);
454	PL_scopestack_ix = 0;	515	PL_scopestack_ix = 0;
455	PL_scopestack_max = 12;	516	PL_scopestack_max = 16;
456		517
457	New(54,PL_savestack,64,ANY);	518	New(54,PL_savestack,96,ANY);
458	PL_savestack_ix = 0;	519	PL_savestack_ix = 0;
459	PL_savestack_max = 64;	520	PL_savestack_max = 96;
460		521
461	New(54,PL_retstack,8,OP*);	522	New(54,PL_retstack,8,OP*);
462	PL_retstack_ix = 0;	523	PL_retstack_ix = 0;
463	PL_retstack_max = 8;	524	PL_retstack_max = 8;
		525
		526	UNLOCK;
464	}	527	}
465		528
466	/*	529	/*
467	* destroy the stacks, the callchain etc...	530	* destroy the stacks, the callchain etc...
468	* still there is a memleak of 128 bytes...
469	*/	531	*/
470	STATIC void	532	STATIC void
471	destroy_stacks(pTHX)	533	destroy_stacks(pTHX)
472	{	534	{
		535	if (!IN_DESTRUCT)
		536	{
473	/* is this ugly, I ask? */	537	/* is this ugly, I ask? */
474	while (PL_scopestack_ix)	538	LEAVE_SCOPE (0);
475	LEAVE;
476		539
477	/* sure it is, but more important: is it correct?? :/ */	540	/* sure it is, but more important: is it correct?? :/ */
478	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
479	FREETMPS;	541	FREETMPS;
		542
		543	/POPSTACK_TO (PL_mainstack);//D//use/
		544	}
480		545
481	while (PL_curstackinfo->si_next)	546	while (PL_curstackinfo->si_next)
482	PL_curstackinfo = PL_curstackinfo->si_next;	547	PL_curstackinfo = PL_curstackinfo->si_next;
483		548
484	while (PL_curstackinfo)	549	while (PL_curstackinfo)
485	{	550	{
486	PERL_SI *p = PL_curstackinfo->si_prev;	551	PERL_SI *p = PL_curstackinfo->si_prev;
487		552
488	{	553	{ /D//remove/
489	dSP;	554	dSP;
490	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	555	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
491	PUTBACK; /* possibly superfluous */	556	PUTBACK; /* possibly superfluous */
492	}	557	}
493		558
494	dounwind(-1);	559	if (!IN_DESTRUCT)
495		560	{
		561	dounwind (-1);/D//remove/
496	SvREFCNT_dec(PL_curstackinfo->si_stack);	562	SvREFCNT_dec (PL_curstackinfo->si_stack);
		563	}
		564
497	Safefree(PL_curstackinfo->si_cxstack);	565	Safefree (PL_curstackinfo->si_cxstack);
498	Safefree(PL_curstackinfo);	566	Safefree (PL_curstackinfo);
499	PL_curstackinfo = p;	567	PL_curstackinfo = p;
500	}	568	}
501		569
502	Safefree(PL_tmps_stack);	570	Safefree (PL_tmps_stack);
503	Safefree(PL_markstack);	571	Safefree (PL_markstack);
504	Safefree(PL_scopestack);	572	Safefree (PL_scopestack);
505	Safefree(PL_savestack);	573	Safefree (PL_savestack);
506	Safefree(PL_retstack);	574	Safefree (PL_retstack);
507	}	575	}
508		576
509	static void	577	static void
510	allocate_stack (Coro__State ctx)	578	allocate_stack (Coro__State ctx, int alloc)
511	{	579	{
		580	coro_stack *stack;
		581
		582	New (0, stack, 1, coro_stack);
		583
		584	stack->refcnt = 1;
		585	stack->usecnt = 1;
		586	stack->gencnt = ctx->gencnt = 0;
		587
		588	if (alloc)
		589	{
512	#ifdef HAVE_MMAP	590	#if HAVE_MMAP
513	ctx->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 */
514	ctx->sptr = mmap (0, ctx->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);
515	if (ctx->sptr == (void *)-1)	593	if (stack->sptr == (void *)-1)
516	#endif	594	#endif
517	{	595	{
518	/FIXME//D//* reasonable stack size! */	596	/FIXME//D//* reasonable stack size! */
519	ctx->ssize = 4096 * sizeof (long);	597	stack->ssize = - (8192 * sizeof (long));
520	New (0, ctx->sptr, 4096, long);	598	New (0, stack->sptr, 8192, long);
		599	}
521	}	600	}
		601	else
		602	stack->sptr = 0;
		603
		604	ctx->stack = stack;
522	}	605	}
523		606
524	static void	607	static void
525	deallocate_stack (Coro__State ctx)	608	deallocate_stack (Coro__State ctx)
526	{	609	{
		610	coro_stack *stack = ctx->stack;
		611
		612	ctx->stack = 0;
		613
		614	if (stack)
		615	{
		616	if (!--stack->refcnt)
		617	{
527	#ifdef HAVE_MMAP	618	#ifdef HAVE_MMAP
528	munmap (ctx->sptr, ctx->ssize);	619	if (stack->ssize > 0 && stack->sptr)
529	#else	620	munmap (stack->sptr, stack->ssize);
530	Safefree (ctx->sptr);	621	else
531	#endif	622	#endif
532	}	623	Safefree (stack->sptr);
533		624
534	/* might go away together with optional SAVE_CCTXT */	625	Safefree (stack);
		626	}
		627	else if (ctx->gencnt == stack->gencnt)
		628	--stack->usecnt;
		629	}
		630	}
		631
535	static void	632	static void
536	setup_coro (void *arg)	633	setup_coro (void *arg)
537	{	634	{
538	/*	635	/*
539	* emulate part of the perl startup here.	636	* emulate part of the perl startup here.
540	*/	637	*/
		638	dTHX;
541	dSP;	639	dSP;
542	Coro__State ctx = (Coro__State)arg;	640	Coro__State ctx = (Coro__State)arg;
543	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	641	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
544		642
545	coro_init_stacks (aTHX);	643	coro_init_stacks (aTHX);
546	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
547	SPAGAIN;	649	SPAGAIN;
548		650
549	/PL_curcop = 0;/
550	SvREFCNT_dec (GvAV (PL_defgv));
551	GvAV (PL_defgv) = ctx->args;
552
553	if (ctx->sptr)	651	if (ctx->stack)
554	{	652	{
		653	ctx->cursp = 0;
		654
555	PUSHMARK(SP);	655	PUSHMARK(SP);
556	PUTBACK;	656	PUTBACK;
557	(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
558	croak ("FATAL: CCTXT coroutine returned!");	662	croak ("FATAL: CCTXT coroutine returned!");
559	}	663	}
560	else	664	else
561	{	665	{
562	UNOP myop;	666	UNOP myop;
563		667
…		…
575	* that doesn't matter, though, since it is only	679	* that doesn't matter, though, since it is only
576	* pp_nextstate and we never return...	680	* pp_nextstate and we never return...
577	* ah yes, and I don't care anyways ;)	681	* ah yes, and I don't care anyways ;)
578	*/	682	*/
579	PUTBACK;	683	PUTBACK;
580	PL_op = pp_entersub();	684	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
581	SPAGAIN;	685	SPAGAIN;
582		686
583	ENTER; /* necessary e.g. for dounwind */	687	ENTER; /* necessary e.g. for dounwind */
584	}	688	}
585	}	689	}
586		690
		691	static void
		692	continue_coro (void *arg)
		693	{
		694	/*
		695	* this is a _very_ stripped down perl interpreter ;)
		696	*/
		697	dTHX;
		698	Coro__State ctx = (Coro__State)arg;
		699	JMPENV coro_start_env;
		700
		701	PL_top_env = &ctx->start_env;
		702
		703	ctx->cursp = 0;
		704	PL_op = PL_op->op_next;
		705	CALLRUNOPS(aTHX);
		706
		707	abort ();
		708	}
		709
587	STATIC void	710	STATIC void
588	transfer(pTHX_ struct coro prev, struct coro next, int flags)	711	transfer (pTHX_ struct coro prev, struct coro next, int flags)
589	{	712	{
590	dSP;	713	dSTACKLEVEL;
591		714
592	if (prev != next)	715	if (prev != next)
593	{	716	{
594	/*
595	* this could be done in newprocess which would lead to
596	* extremely elegant and fast (basically just SAVE/LOAD)
597	* code here, but lazy allocation of stacks has also
598	* some virtues and the overhead of the if() is nil.
599	*/
600	if (next->mainstack)	717	if (next->mainstack)
601	{	718	{
		719	LOCK;
602	SAVE (prev, flags);	720	SAVE (prev, flags);
603	LOAD (next);	721	LOAD (next);
		722	UNLOCK;
604		723
605	/* mark this state as in-use */	724	/* mark this state as in-use */
606	next->mainstack = 0;	725	next->mainstack = 0;
607	next->tmps_ix = -2;	726	next->tmps_ix = -2;
608		727
		728	/* stacklevel changed? if yes, grab the stack for us! */
609	if (flags & TRANSFER_SAVE_CCTXT)	729	if (flags & TRANSFER_SAVE_CCTXT)
610	{	730	{
611	if (!next->ssize)
612	croak ("destination coroutine has no CCTXT (%p, %d)", next->sptr, next->ssize);
613
614	if (!prev->ssize)	731	if (!prev->stack)
615	prev->ssize = 1; /* mark cctx as valid ;) */	732	allocate_stack (prev, 0);
		733	else if (prev->cursp != stacklevel
		734	&& prev->stack->usecnt > 1)
		735	{
		736	prev->gencnt = ++prev->stack->gencnt;
		737	prev->stack->usecnt = 1;
		738	}
616		739
		740	/* has our stack been invalidated? */
		741	if (next->stack && next->stack->gencnt != next->gencnt)
		742	{
		743	deallocate_stack (next);
		744	allocate_stack (next, 1);
		745	coro_create (&(next->stack->cctx),
		746	continue_coro, (void *)next,
		747	next->stack->sptr, labs (next->stack->ssize));
		748	}
		749
617	coro_transfer (&(prev->cctx), &(next->cctx));	750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		751	prev->cursp = stacklevel;
		752	/* don't add any code here */
618	}	753	}
619		754	else
		755	next->cursp = stacklevel;
620	}	756	}
621	else if (next->tmps_ix == -2)	757	else if (next->tmps_ix == -2)
622	croak ("tried to transfer to running coroutine");	758	croak ("tried to transfer to running coroutine");
623	else	759	else
624	{	760	{
		761	LOCK;
625	SAVE (prev, -1); /* first get rid of the old state */	762	SAVE (prev, -1); /* first get rid of the old state */
		763	UNLOCK;
626		764
627	if (flags & TRANSFER_SAVE_CCTXT)	765	if (flags & TRANSFER_SAVE_CCTXT)
628	{	766	{
629	if (!next->ssize)	767	if (!prev->stack)
		768	allocate_stack (prev, 0);
		769
		770	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
630	{	771	{
		772	PL_top_env = &next->start_env;
		773
		774	setup_coro (next);
		775	next->cursp = stacklevel;
		776
		777	prev->stack->refcnt++;
		778	prev->stack->usecnt++;
		779	next->stack = prev->stack;
		780	next->gencnt = prev->gencnt;
		781	}
		782	else
		783	{
		784	assert (!next->stack);
631	allocate_stack (next);	785	allocate_stack (next, 1);
632	coro_create (&(next->cctx),	786	coro_create (&(next->stack->cctx),
633	setup_coro, (void *)next,	787	setup_coro, (void *)next,
634	next->sptr, next->ssize);	788	next->stack->sptr, labs (next->stack->ssize));
		789	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		790	prev->cursp = stacklevel;
		791	/* don't add any code here */
635	}	792	}
636
637	if (!prev->ssize)
638	prev->ssize = 1; /* mark cctx as valid ;) */
639
640	coro_transfer (&(prev->cctx), &(next->cctx));
641	}	793	}
642	else	794	else
		795	{
643	setup_coro (next);	796	setup_coro (next);
		797	next->cursp = stacklevel;
		798	}
644	}	799	}
645	}	800	}
		801
		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 ();
646	}	949	}
647		950
648	MODULE = Coro::State PACKAGE = Coro::State	951	MODULE = Coro::State PACKAGE = Coro::State
649		952
650	PROTOTYPES: ENABLE	953	PROTOTYPES: ENABLE
651		954
652	BOOT:	955	BOOT:
653	{ /* {} 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
654	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	961	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
655	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	962	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
656	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	963	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
657		964
658	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	965	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
659	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	966	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
660	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	967	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
661	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	968	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
662		969
663	if (!padlist_cache)
664	padlist_cache = newHV ();
665
666	main_mainstack = PL_mainstack;	970	main_mainstack = PL_mainstack;
		971
		972	coroapi.ver = CORO_API_VERSION;
		973	coroapi.transfer = api_transfer;
667	}	974	}
668		975
669	Coro::State	976	Coro::State
670	_newprocess(args)	977	_newprocess(args)
671	SV * args	978	SV * args
…		…
674	Coro__State coro;	981	Coro__State coro;
675		982
676	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	983	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
677	croak ("Coro::State::_newprocess expects an arrayref");	984	croak ("Coro::State::_newprocess expects an arrayref");
678		985
679	New (0, coro, 1, struct coro);	986	Newz (0, coro, 1, struct coro);
680		987
681	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	988	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
682	coro->mainstack = 0; /* actual work is done inside transfer */	989	/coro->mainstack = 0; //actual work is done inside transfer /
683	coro->sptr = 0;	990	/coro->stack = 0;/
684	coro->ssize = 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;
685		997
686	RETVAL = coro;	998	RETVAL = coro;
687	OUTPUT:	999	OUTPUT:
688	RETVAL	1000	RETVAL
689		1001
690	void	1002	void
691	transfer(prev, next, flags = TRANSFER_SAVE_ALL)	1003	transfer(prev, next, flags)
692	Coro::State_or_hashref prev	1004	SV *prev
693	Coro::State_or_hashref next	1005	SV *next
694	int flags	1006	int flags
695	PROTOTYPE: @	1007	PROTOTYPE: @
696	CODE:	1008	CODE:
		1009	PUTBACK;
		1010	SV_CORO (next, "Coro::transfer");
		1011	SV_CORO (prev, "Coro::transfer");
697	transfer (aTHX_ prev, next, flags);	1012	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		1013	SPAGAIN;
698		1014
699	void	1015	void
700	DESTROY(coro)	1016	DESTROY(coro)
701	Coro::State coro	1017	Coro::State coro
702	CODE:	1018	CODE:
703		1019
704	if (coro->mainstack && coro->mainstack != main_mainstack)	1020	if (coro->mainstack && coro->mainstack != main_mainstack)
705	{	1021	{
706	struct coro temp;	1022	struct coro temp;
707		1023
		1024	PUTBACK;
708	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1025	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
709	LOAD(aTHX_ coro);	1026	LOAD (aTHX_ coro);
		1027	SPAGAIN;
710		1028
711	destroy_stacks (aTHX);	1029	destroy_stacks (aTHX);
712		1030
713	LOAD((&temp)); /* this will get rid of defsv etc.. */	1031	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1032	SPAGAIN;
714		1033
715	coro->mainstack = 0;	1034	coro->mainstack = 0;
716	}	1035	}
717		1036
718	if (coro->sptr)
719	{
720	deallocate_stack (coro);	1037	deallocate_stack (coro);
721	coro->sptr = 0;	1038	SvREFCNT_dec (coro->args);
722	}
723
724	Safefree (coro);	1039	Safefree (coro);
725		1040
726	void	1041	void
727	flush()	1042	_exit(code)
		1043	int code
		1044	PROTOTYPE: $
728	CODE:	1045	CODE:
729	#ifdef MAY_FLUSH	1046	_exit (code);
730	flush_padlist_cache ();
731	#endif
732		1047
733	MODULE = Coro::State PACKAGE = Coro::Cont	1048	MODULE = Coro::State PACKAGE = Coro::Cont
734		1049
735	# this is slightly dirty	1050	# this is slightly dirty (should expose a c-level api)
736		1051
737	void	1052	void
738	yield(...)	1053	yield(...)
739	PROTOTYPE: @	1054	PROTOTYPE: @
740	CODE:	1055	CODE:
741	static SV *returnstk;	1056	SV *yieldstack;
742	SV *sv;	1057	SV *sv;
743	AV *defav = GvAV (PL_defgv);	1058	AV *defav = GvAV (PL_defgv);
744	struct coro prev, next;	1059	struct coro prev, next;
745		1060
746	if (!returnstk)	1061	yieldstack = *hv_fetch (
747	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1062	(HV *)SvRV (GvSV (coro_current)),
		1063	"yieldstack", sizeof ("yieldstack") - 1,
		1064	0
		1065	);
748		1066
749	/* set up @_ -- ugly */	1067	/* set up @_ -- ugly */
750	av_clear (defav);	1068	av_clear (defav);
751	av_fill (defav, items - 1);	1069	av_fill (defav, items - 1);
752	while (items--)	1070	while (items--)
753	av_store (defav, items, SvREFCNT_inc (ST(items)));	1071	av_store (defav, items, SvREFCNT_inc (ST(items)));
754		1072
755	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
756	sv = av_pop ((AV *)SvRV (returnstk));	1073	sv = av_pop ((AV *)SvRV (yieldstack));
757	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)));
758	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)));
759	SvREFCNT_dec (sv);	1076	SvREFCNT_dec (sv);
760		1077
761	transfer(aTHX_ prev, next, 0);	1078	transfer (aTHX_ prev, next, 0);
762		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 1.14 by root, Mon Jul 23 23:48:05 2001 UTC vs. Revision 1.65 by root, Mon Dec 5 23:50:48 2005 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.14 by root, Mon Jul 23 23:48:05 2001 UTC vs.
Revision 1.65 by root, Mon Dec 5 23:50:48 2005 UTC