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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC vs.
Revision 1.67 by root, Mon Dec 12 20:07:44 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	// threaded perls might need much more, 65536 or more,
		12	// which is 0.5 to 1MB
		13	#define STACKSIZE 16384
		14
		15	#if PERL_VERSION < 6
		16	# ifndef PL_ppaddr
		17	# define PL_ppaddr ppaddr
		18	# endif
		19	# ifndef call_sv
		20	# define call_sv perl_call_sv
		21	# endif
		22	# ifndef get_sv
		23	# define get_sv perl_get_sv
		24	# endif
		25	# ifndef get_cv
		26	# define get_cv perl_get_cv
		27	# endif
		28	# ifndef IS_PADGV
		29	# define IS_PADGV(v) 0
		30	# endif
		31	# ifndef IS_PADCONST
		32	# define IS_PADCONST(v) 0
		33	# endif
		34	#endif
6		35
7	#include <signal.h>	36	#include <signal.h>
8		37
9	#ifdef HAVE_MMAP	38	#ifdef HAVE_MMAP
10	# include <unistd.h>	39	# include <unistd.h>
11	# include <sys/mman.h>	40	# include <sys/mman.h>
12	# ifndef MAP_ANON
13	# ifdef MAP_ANONYMOUS	41	# ifndef MAP_ANONYMOUS
14	# define MAP_ANON MAP_ANONYMOUS	42	# ifdef MAP_ANON
		43	# define MAP_ANONYMOUS MAP_ANON
15	# else	44	# else
16	# undef HAVE_MMAP	45	# undef HAVE_MMAP
17	# endif	46	# endif
18	# endif	47	# endif
19	#endif	48	#endif
20		49
21	#define MAY_FLUSH /* increases codesize */
22
23	/* perl-related */
24	#define TRANSFER_SAVE_DEFAV 0x00000001
25	#define TRANSFER_SAVE_DEFSV 0x00000002
26	#define TRANSFER_SAVE_ERRSV 0x00000004
27	/* c-related */
28	#define TRANSFER_SAVE_CCTXT 0x00000008
29	#ifdef CORO_LAZY_STACK
30	# define TRANSFER_LAZY_STACK 0x00000010
31	#else
32	# define TRANSFER_LAZY_STACK 0x00000000
33	#endif
34
35	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
36	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
37
38	#define SUB_INIT "Coro::State::initialize"	50	#define SUB_INIT "Coro::State::initialize"
39	#define UCORO_STATE "_coro_state"	51	#define UCORO_STATE "_coro_state"
40		52
41	/* The next macro should delcare a variable stacklevel that contains and approximation	53	/* The next macro should declare a variable stacklevel that contains and approximation
42	* to the current C stack pointer. It's property is that it changes with each call	54	* to the current C stack pointer. Its property is that it changes with each call
43	* and should be unique. */	55	* and should be unique. */
44	#define dSTACKLEVEL void *stacklevel = &stacklevel	56	#define dSTACKLEVEL void *stacklevel = &stacklevel
45		57
		58	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		59
46	#define labs(l) ((l) >= 0 ? (l) : -(l))	60	#define labs(l) ((l) >= 0 ? (l) : -(l))
		61
		62	#include "CoroAPI.h"
		63
		64	#ifdef USE_ITHREADS
		65	static perl_mutex coro_mutex;
		66	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		67	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		68	#else
		69	# define LOCK 0
		70	# define UNLOCK 0
		71	#endif
		72
		73	static struct CoroAPI coroapi;
		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 SV coro_mortal; / will be freed after next transfer */
47		79
48	/* this is actually not only the c stack but also c registers etc... */	80	/* this is actually not only the c stack but also c registers etc... */
49	typedef struct {	81	typedef struct {
50	int refcnt; /* pointer reference counter */	82	int refcnt; /* pointer reference counter */
51	int usecnt; /* shared by how many coroutines */	83	int usecnt; /* shared by how many coroutines */
56	void *sptr;	88	void *sptr;
57	long ssize; /* positive == mmap, otherwise malloc */	89	long ssize; /* positive == mmap, otherwise malloc */
58	} coro_stack;	90	} coro_stack;
59		91
60	struct coro {	92	struct coro {
		93	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		94	JMPENV start_env;
		95
61	/* the optional C context */	96	/* the optional C context */
62	coro_stack *stack;	97	coro_stack *stack;
63	void *cursp;	98	void *cursp;
64	int gencnt;	99	int gencnt;
65		100
…		…
77	AV *curstack;	112	AV *curstack;
78	AV *mainstack;	113	AV *mainstack;
79	SV **stack_sp;	114	SV **stack_sp;
80	OP *op;	115	OP *op;
81	SV **curpad;	116	SV **curpad;
		117	AV *comppad;
		118	CV *compcv;
82	SV **stack_base;	119	SV **stack_base;
83	SV **stack_max;	120	SV **stack_max;
84	SV **tmps_stack;	121	SV **tmps_stack;
85	I32 tmps_floor;	122	I32 tmps_floor;
86	I32 tmps_ix;	123	I32 tmps_ix;
…		…
95	I32 savestack_ix;	132	I32 savestack_ix;
96	I32 savestack_max;	133	I32 savestack_max;
97	OP **retstack;	134	OP **retstack;
98	I32 retstack_ix;	135	I32 retstack_ix;
99	I32 retstack_max;	136	I32 retstack_max;
		137	PMOP *curpm;
100	COP *curcop;	138	COP *curcop;
101	JMPENV *top_env;	139	JMPENV *top_env;
102		140
103	/* data associated with this coroutine (initial args) */	141	/* data associated with this coroutine (initial args) */
104	AV *args;	142	AV *args;
105	};	143	};
106		144
107	typedef struct coro *Coro__State;	145	typedef struct coro *Coro__State;
108	typedef struct coro *Coro__State_or_hashref;	146	typedef struct coro *Coro__State_or_hashref;
109		147
110	static AV main_mainstack; / used to differentiate between $main and others */
111	static HV *coro_state_stash;
112	static SV *ucoro_state_sv;
113	static U32 ucoro_state_hash;
114	static HV *padlist_cache;
115
116	/* for Coro.pm */
117	static GV coro_current, coro_idle;
118	static AV *coro_ready;
119
120	/* mostly copied from op.c:cv_clone2 */	148	/* mostly copied from op.c:cv_clone2 */
121	STATIC AV *	149	STATIC AV *
122	clone_padlist (AV *protopadlist)	150	clone_padlist (pTHX_ AV *protopadlist)
123	{	151	{
124	AV *av;	152	AV *av;
125	I32 ix;	153	I32 ix;
126	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	154	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
127	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	155	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
151	AvFLAGS (av) = AVf_REIFY;	179	AvFLAGS (av) = AVf_REIFY;
152		180
153	for (ix = fpad; ix > 0; ix--)	181	for (ix = fpad; ix > 0; ix--)
154	{	182	{
155	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	183	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		184
156	if (namesv && namesv != &PL_sv_undef)	185	if (namesv && namesv != &PL_sv_undef)
157	{	186	{
158	char name = SvPVX (namesv); / XXX */	187	char name = SvPVX (namesv); / XXX */
		188
159	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	189	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
160	{ /* lexical from outside? */	190	{ /* lexical from outside? */
161	npad[ix] = SvREFCNT_inc (ppad[ix]);	191	npad[ix] = SvREFCNT_inc (ppad[ix]);
162	}	192	}
163	else	193	else
…		…
169	sv = (SV *) newAV ();	199	sv = (SV *) newAV ();
170	else if (*name == '%')	200	else if (*name == '%')
171	sv = (SV *) newHV ();	201	sv = (SV *) newHV ();
172	else	202	else
173	sv = NEWSV (0, 0);	203	sv = NEWSV (0, 0);
		204
		205	#ifdef SvPADBUSY
174	if (!SvPADBUSY (sv))	206	if (!SvPADBUSY (sv))
		207	#endif
175	SvPADMY_on (sv);	208	SvPADMY_on (sv);
		209
176	npad[ix] = sv;	210	npad[ix] = sv;
177	}	211	}
178	}	212	}
179	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	213	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
180	{	214	{
…		…
209	#endif	243	#endif
210		244
211	return newpadlist;	245	return newpadlist;
212	}	246	}
213		247
214	#ifdef MAY_FLUSH	248	STATIC void
215	STATIC AV *
216	free_padlist (AV *padlist)	249	free_padlist (pTHX_ AV *padlist)
217	{	250	{
218	/* may be during global destruction */	251	/* may be during global destruction */
219	if (SvREFCNT(padlist))	252	if (SvREFCNT (padlist))
220	{	253	{
221	I32 i = AvFILLp(padlist);	254	I32 i = AvFILLp (padlist);
222	while (i >= 0)	255	while (i >= 0)
223	{	256	{
224	SV **svp = av_fetch(padlist, i--, FALSE);	257	SV **svp = av_fetch (padlist, i--, FALSE);
225	SV sv = svp ? svp : Nullsv;
226	if (sv)	258	if (svp)
		259	{
		260	SV *sv;
		261	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
227	SvREFCNT_dec(sv);	262	SvREFCNT_dec (sv);
		263
		264	SvREFCNT_dec (*svp);
		265	}
228	}	266	}
229		267
230	SvREFCNT_dec((SV*)padlist);	268	SvREFCNT_dec ((SV*)padlist);
231	}	269	}
232	}	270	}
233	#endif	271
		272	STATIC int
		273	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		274	{
		275	AV *padlist;
		276	AV av = (AV )mg->mg_obj;
		277
		278	/* casting is fun. */
		279	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		280	free_padlist (aTHX_ padlist);
		281
		282	SvREFCNT_dec (av);
		283	}
		284
		285	#define PERL_MAGIC_coro PERL_MAGIC_ext
		286
		287	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
234		288
235	/* the next two functions merely cache the padlists */	289	/* the next two functions merely cache the padlists */
236	STATIC void	290	STATIC void
237	get_padlist (CV *cv)	291	get_padlist (pTHX_ CV *cv)
238	{	292	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	293	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
240		294
241	if (he && AvFILLp ((AV )he) >= 0)	295	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
242	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	296	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
243	else	297	else
244	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	298	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
245	}	299	}
246		300
247	STATIC void	301	STATIC void
248	put_padlist (CV *cv)	302	put_padlist (pTHX_ CV *cv)
249	{	303	{
250	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	304	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
251		305
252	if (SvTYPE (*he) != SVt_PVAV)	306	if (!mg)
253	{	307	{
254	SvREFCNT_dec (*he);	308	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		309	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		310	mg->mg_virtual = &vtbl_coro;
255	he = (SV )newAV ();	311	mg->mg_obj = (SV *)newAV ();
256	}	312	}
257		313
258	av_push ((AV )he, (SV *)CvPADLIST (cv));	314	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
259	}	315	}
260
261	#ifdef MAY_FLUSH
262	STATIC void
263	flush_padlist_cache ()
264	{
265	HV *hv = padlist_cache;
266	padlist_cache = newHV ();
267
268	if (hv_iterinit (hv))
269	{
270	HE *he;
271	AV *padlist;
272
273	while (!!(he = hv_iternext (hv)))
274	{
275	AV av = (AV )HeVAL(he);
276
277	/* casting is fun. */
278	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
279	free_padlist (padlist);
280	}
281	}
282
283	SvREFCNT_dec (hv);
284	}
285	#endif
286		316
287	#define SB do {	317	#define SB do {
288	#define SE } while (0)	318	#define SE } while (0)
289		319
290	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	320	#define LOAD(state) load_state(aTHX_ (state));
291	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	321	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
292		322
293	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	323	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
294		324
295	static void	325	static void
296	load_state(pTHX_ Coro__State c)	326	load_state(pTHX_ Coro__State c)
297	{	327	{
298	PL_dowarn = c->dowarn;	328	PL_dowarn = c->dowarn;
…		…
302	PL_curstack = c->curstack;	332	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;	333	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;	334	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;	335	PL_op = c->op;
306	PL_curpad = c->curpad;	336	PL_curpad = c->curpad;
		337	PL_comppad = c->comppad;
		338	PL_compcv = c->compcv;
307	PL_stack_base = c->stack_base;	339	PL_stack_base = c->stack_base;
308	PL_stack_max = c->stack_max;	340	PL_stack_max = c->stack_max;
309	PL_tmps_stack = c->tmps_stack;	341	PL_tmps_stack = c->tmps_stack;
310	PL_tmps_floor = c->tmps_floor;	342	PL_tmps_floor = c->tmps_floor;
311	PL_tmps_ix = c->tmps_ix;	343	PL_tmps_ix = c->tmps_ix;
…		…
320	PL_savestack_ix = c->savestack_ix;	352	PL_savestack_ix = c->savestack_ix;
321	PL_savestack_max = c->savestack_max;	353	PL_savestack_max = c->savestack_max;
322	PL_retstack = c->retstack;	354	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;	355	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;	356	PL_retstack_max = c->retstack_max;
		357	PL_curpm = c->curpm;
325	PL_curcop = c->curcop;	358	PL_curcop = c->curcop;
326	PL_top_env = c->top_env;	359	PL_top_env = c->top_env;
327		360
328	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	361	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
329	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	362	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
338	{	371	{
339	AV padlist = (AV )POPs;	372	AV padlist = (AV )POPs;
340		373
341	if (padlist)	374	if (padlist)
342	{	375	{
343	put_padlist (cv); /* mark this padlist as available */	376	put_padlist (aTHX_ cv); /* mark this padlist as available */
344	CvPADLIST(cv) = padlist;	377	CvPADLIST(cv) = padlist;
345	#ifdef USE_THREADS
346	/CvOWNER(cv) = (struct perl_thread )POPs;*/
347	#endif
348	}	378	}
349		379
350	++CvDEPTH(cv);	380	++CvDEPTH(cv);
351	}	381	}
352		382
…		…
370		400
371	PUSHs (Nullsv);	401	PUSHs (Nullsv);
372	/* this loop was inspired by pp_caller */	402	/* this loop was inspired by pp_caller */
373	for (;;)	403	for (;;)
374	{	404	{
375	do	405	while (cxix >= 0)
376	{	406	{
377	PERL_CONTEXT *cx = &ccstk[cxix--];	407	PERL_CONTEXT *cx = &ccstk[cxix--];
378		408
379	if (CxTYPE(cx) == CXt_SUB)	409	if (CxTYPE(cx) == CXt_SUB)
380	{	410	{
381	CV *cv = cx->blk_sub.cv;	411	CV *cv = cx->blk_sub.cv;
382	if (CvDEPTH(cv))	412	if (CvDEPTH(cv))
383	{	413	{
384	#ifdef USE_THREADS
385	/XPUSHs ((SV )CvOWNER(cv));*/
386	/CvOWNER(cv) = 0;/
387	/error must unlock this cv etc.. etc.../
388	#endif
389	EXTEND (SP, CvDEPTH(cv)*2);	414	EXTEND (SP, CvDEPTH(cv)*2);
390		415
391	while (--CvDEPTH(cv))	416	while (--CvDEPTH(cv))
392	{	417	{
393	/* this tells the restore code to increment CvDEPTH */	418	/* this tells the restore code to increment CvDEPTH */
…		…
396	}	421	}
397		422
398	PUSHs ((SV *)CvPADLIST(cv));	423	PUSHs ((SV *)CvPADLIST(cv));
399	PUSHs ((SV *)cv);	424	PUSHs ((SV *)cv);
400		425
401	get_padlist (cv); /* this is a monster */	426	get_padlist (aTHX_ cv); /* this is a monster */
402	}	427	}
403	}	428	}
		429	#ifdef CXt_FORMAT
404	else if (CxTYPE(cx) == CXt_FORMAT)	430	else if (CxTYPE(cx) == CXt_FORMAT)
405	{	431	{
406	/* I never used formats, so how should I know how these are implemented? */	432	/* I never used formats, so how should I know how these are implemented? */
407	/* my bold guess is as a simple, plain sub... */	433	/* my bold guess is as a simple, plain sub... */
408	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	434	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
409	}	435	}
		436	#endif
410	}	437	}
411	while (cxix >= 0);
412		438
413	if (top_si->si_type == PERLSI_MAIN)	439	if (top_si->si_type == PERLSI_MAIN)
414	break;	440	break;
415		441
416	top_si = top_si->si_prev;	442	top_si = top_si->si_prev;
…		…
422	}	448	}
423		449
424	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	450	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
425	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	451	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
426	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	452	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
427
428	/* I have not the slightest idea of why av_reify is necessary */
429	/* but if it's missing the defav contents magically get replaced sometimes */
430	if (c->defav)
431	av_reify (c->defav);
432		453
433	c->dowarn = PL_dowarn;	454	c->dowarn = PL_dowarn;
434	c->in_eval = PL_in_eval;	455	c->in_eval = PL_in_eval;
435		456
436	c->curstackinfo = PL_curstackinfo;	457	c->curstackinfo = PL_curstackinfo;
437	c->curstack = PL_curstack;	458	c->curstack = PL_curstack;
438	c->mainstack = PL_mainstack;	459	c->mainstack = PL_mainstack;
439	c->stack_sp = PL_stack_sp;	460	c->stack_sp = PL_stack_sp;
440	c->op = PL_op;	461	c->op = PL_op;
441	c->curpad = PL_curpad;	462	c->curpad = PL_curpad;
		463	c->comppad = PL_comppad;
		464	c->compcv = PL_compcv;
442	c->stack_base = PL_stack_base;	465	c->stack_base = PL_stack_base;
443	c->stack_max = PL_stack_max;	466	c->stack_max = PL_stack_max;
444	c->tmps_stack = PL_tmps_stack;	467	c->tmps_stack = PL_tmps_stack;
445	c->tmps_floor = PL_tmps_floor;	468	c->tmps_floor = PL_tmps_floor;
446	c->tmps_ix = PL_tmps_ix;	469	c->tmps_ix = PL_tmps_ix;
…		…
455	c->savestack_ix = PL_savestack_ix;	478	c->savestack_ix = PL_savestack_ix;
456	c->savestack_max = PL_savestack_max;	479	c->savestack_max = PL_savestack_max;
457	c->retstack = PL_retstack;	480	c->retstack = PL_retstack;
458	c->retstack_ix = PL_retstack_ix;	481	c->retstack_ix = PL_retstack_ix;
459	c->retstack_max = PL_retstack_max;	482	c->retstack_max = PL_retstack_max;
		483	c->curpm = PL_curpm;
460	c->curcop = PL_curcop;	484	c->curcop = PL_curcop;
461	c->top_env = PL_top_env;	485	c->top_env = PL_top_env;
462	}	486	}
463		487
464	/*	488	/*
465	* allocate various perl stacks. This is an exact copy	489	* allocate various perl stacks. This is an exact copy
466	* of perl.c:init_stacks, except that it uses less memory	490	* of perl.c:init_stacks, except that it uses less memory
467	* on the assumption that coroutines do not usually need	491	* on the (sometimes correct) assumption that coroutines do
468	* a lot of stackspace.	492	* not usually need a lot of stackspace.
469	*/	493	*/
470	STATIC void	494	STATIC void
471	coro_init_stacks (pTHX)	495	coro_init_stacks (pTHX)
472	{	496	{
		497	LOCK;
		498
473	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	499	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
474	PL_curstackinfo->si_type = PERLSI_MAIN;	500	PL_curstackinfo->si_type = PERLSI_MAIN;
475	PL_curstack = PL_curstackinfo->si_stack;	501	PL_curstack = PL_curstackinfo->si_stack;
476	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	502	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
477		503
…		…
486		512
487	New(54,PL_markstack,16,I32);	513	New(54,PL_markstack,16,I32);
488	PL_markstack_ptr = PL_markstack;	514	PL_markstack_ptr = PL_markstack;
489	PL_markstack_max = PL_markstack + 16;	515	PL_markstack_max = PL_markstack + 16;
490		516
		517	#ifdef SET_MARK_OFFSET
491	SET_MARK_OFFSET;	518	SET_MARK_OFFSET;
		519	#endif
492		520
493	New(54,PL_scopestack,16,I32);	521	New(54,PL_scopestack,16,I32);
494	PL_scopestack_ix = 0;	522	PL_scopestack_ix = 0;
495	PL_scopestack_max = 16;	523	PL_scopestack_max = 16;
496		524
…		…
499	PL_savestack_max = 96;	527	PL_savestack_max = 96;
500		528
501	New(54,PL_retstack,8,OP*);	529	New(54,PL_retstack,8,OP*);
502	PL_retstack_ix = 0;	530	PL_retstack_ix = 0;
503	PL_retstack_max = 8;	531	PL_retstack_max = 8;
		532
		533	UNLOCK;
504	}	534	}
505		535
506	/*	536	/*
507	* destroy the stacks, the callchain etc...	537	* destroy the stacks, the callchain etc...
508	* still there is a memleak of 128 bytes...
509	*/	538	*/
510	STATIC void	539	STATIC void
511	destroy_stacks(pTHX)	540	destroy_stacks(pTHX)
512	{	541	{
		542	if (!IN_DESTRUCT)
		543	{
513	/* is this ugly, I ask? */	544	/* is this ugly, I ask? */
514	while (PL_scopestack_ix)	545	LEAVE_SCOPE (0);
515	LEAVE;
516		546
517	/* sure it is, but more important: is it correct?? :/ */	547	/* sure it is, but more important: is it correct?? :/ */
518	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
519	FREETMPS;	548	FREETMPS;
		549
		550	/POPSTACK_TO (PL_mainstack);//D//use/
		551	}
520		552
521	while (PL_curstackinfo->si_next)	553	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	554	PL_curstackinfo = PL_curstackinfo->si_next;
523		555
524	while (PL_curstackinfo)	556	while (PL_curstackinfo)
525	{	557	{
526	PERL_SI *p = PL_curstackinfo->si_prev;	558	PERL_SI *p = PL_curstackinfo->si_prev;
527		559
528	{	560	{ /D//remove/
529	dSP;	561	dSP;
530	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	562	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
531	PUTBACK; /* possibly superfluous */	563	PUTBACK; /* possibly superfluous */
532	}	564	}
533		565
534	dounwind(-1);	566	if (!IN_DESTRUCT)
535		567	{
		568	dounwind (-1);/D//remove/
536	SvREFCNT_dec(PL_curstackinfo->si_stack);	569	SvREFCNT_dec (PL_curstackinfo->si_stack);
		570	}
		571
537	Safefree(PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
538	Safefree(PL_curstackinfo);	573	Safefree (PL_curstackinfo);
539	PL_curstackinfo = p;	574	PL_curstackinfo = p;
540	}	575	}
541		576
542	Safefree(PL_tmps_stack);	577	Safefree (PL_tmps_stack);
543	Safefree(PL_markstack);	578	Safefree (PL_markstack);
544	Safefree(PL_scopestack);	579	Safefree (PL_scopestack);
545	Safefree(PL_savestack);	580	Safefree (PL_savestack);
546	Safefree(PL_retstack);	581	Safefree (PL_retstack);
547	}	582	}
548		583
549	static void	584	static void
550	allocate_stack (Coro__State ctx, int alloc)	585	allocate_stack (Coro__State ctx, int alloc)
551	{	586	{
…		…
554	New (0, stack, 1, coro_stack);	589	New (0, stack, 1, coro_stack);
555		590
556	stack->refcnt = 1;	591	stack->refcnt = 1;
557	stack->usecnt = 1;	592	stack->usecnt = 1;
558	stack->gencnt = ctx->gencnt = 0;	593	stack->gencnt = ctx->gencnt = 0;
		594
559	if (alloc)	595	if (alloc)
560	{	596	{
561	#ifdef HAVE_MMAP	597	#if HAVE_MMAP
562	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	598	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
563	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	599	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
564	if (stack->sptr == (void *)-1)	600	if (stack->sptr == (void *)-1)
565	#endif	601	#endif
566	{	602	{
567	/FIXME//D//* reasonable stack size! */	603	/FIXME//D//* reasonable stack size! */
568	stack->ssize = -4096 * sizeof (long);	604	stack->ssize = - (STACKSIZE * sizeof (long));
569	New (0, stack->sptr, 4096, long);	605	New (0, stack->sptr, STACKSIZE, long);
570	}	606	}
571	}	607	}
572	else	608	else
573	stack->sptr = 0;	609	stack->sptr = 0;
574		610
…		…
588	{	624	{
589	#ifdef HAVE_MMAP	625	#ifdef HAVE_MMAP
590	if (stack->ssize > 0 && stack->sptr)	626	if (stack->ssize > 0 && stack->sptr)
591	munmap (stack->sptr, stack->ssize);	627	munmap (stack->sptr, stack->ssize);
592	else	628	else
593	#else	629	#endif
594	Safefree (stack->sptr);	630	Safefree (stack->sptr);
595	#endif	631
596	Safefree (stack);	632	Safefree (stack);
597	}	633	}
598	else if (ctx->gencnt == stack->gencnt)	634	else if (ctx->gencnt == stack->gencnt)
599	--stack->usecnt;	635	--stack->usecnt;
600	}	636	}
…		…
604	setup_coro (void *arg)	640	setup_coro (void *arg)
605	{	641	{
606	/*	642	/*
607	* emulate part of the perl startup here.	643	* emulate part of the perl startup here.
608	*/	644	*/
		645	dTHX;
609	dSP;	646	dSP;
610	Coro__State ctx = (Coro__State)arg;	647	Coro__State ctx = (Coro__State)arg;
611	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	648	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
612		649
613	coro_init_stacks (aTHX);	650	coro_init_stacks (aTHX);
614	/PL_curcop = 0;/	651	/PL_curcop = 0;/
615	/PL_in_eval = PL_in_eval;/ /* inherit */	652	/PL_in_eval = PL_in_eval;/ /* inherit */
616	SvREFCNT_dec (GvAV (PL_defgv));	653	SvREFCNT_dec (GvAV (PL_defgv));
617	GvAV (PL_defgv) = ctx->args;	654	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
618		655
619	SPAGAIN;	656	SPAGAIN;
620		657
621	if (ctx->stack)	658	if (ctx->stack)
622	{	659	{
…		…
649	* that doesn't matter, though, since it is only	686	* that doesn't matter, though, since it is only
650	* pp_nextstate and we never return...	687	* pp_nextstate and we never return...
651	* ah yes, and I don't care anyways ;)	688	* ah yes, and I don't care anyways ;)
652	*/	689	*/
653	PUTBACK;	690	PUTBACK;
654	PL_op = pp_entersub();	691	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
655	SPAGAIN;	692	SPAGAIN;
656		693
657	ENTER; /* necessary e.g. for dounwind */	694	ENTER; /* necessary e.g. for dounwind */
658	}	695	}
659	}	696	}
…		…
662	continue_coro (void *arg)	699	continue_coro (void *arg)
663	{	700	{
664	/*	701	/*
665	* this is a _very_ stripped down perl interpreter ;)	702	* this is a _very_ stripped down perl interpreter ;)
666	*/	703	*/
		704	dTHX;
667	Coro__State ctx = (Coro__State)arg;	705	Coro__State ctx = (Coro__State)arg;
		706	JMPENV coro_start_env;
668		707
669	/FIXME//* must set up top_env here */	708	PL_top_env = &ctx->start_env;
		709
670	ctx->cursp = 0;	710	ctx->cursp = 0;
671	PL_op = PL_op->op_next;	711	PL_op = PL_op->op_next;
672	CALLRUNOPS(aTHX);	712	CALLRUNOPS(aTHX);
673		713
674	abort ();	714	abort ();
675	}	715	}
676		716
677	STATIC void	717	STATIC void
678	transfer(pTHX_ struct coro prev, struct coro next, int flags)	718	transfer (pTHX_ struct coro prev, struct coro next, int flags)
679	{	719	{
680	dSP;
681	dSTACKLEVEL;	720	dSTACKLEVEL;
682		721
683	if (prev != next)	722	if (prev != next)
684	{	723	{
685	if (next->mainstack)	724	if (next->mainstack)
686	{	725	{
		726	LOCK;
687	SAVE (prev, flags);	727	SAVE (prev, flags);
688	LOAD (next);	728	LOAD (next);
		729	UNLOCK;
689		730
690	/* mark this state as in-use */	731	/* mark this state as in-use */
691	next->mainstack = 0;	732	next->mainstack = 0;
692	next->tmps_ix = -2;	733	next->tmps_ix = -2;
693		734
…		…
712	continue_coro, (void *)next,	753	continue_coro, (void *)next,
713	next->stack->sptr, labs (next->stack->ssize));	754	next->stack->sptr, labs (next->stack->ssize));
714	}	755	}
715		756
716	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	757	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		758	prev->cursp = stacklevel;
		759	/* don't add any code here */
717	}	760	}
718		761	else
		762	next->cursp = stacklevel;
719	}	763	}
720	else if (next->tmps_ix == -2)	764	else if (next->tmps_ix == -2)
721	croak ("tried to transfer to running coroutine");	765	croak ("tried to transfer to running coroutine");
722	else	766	else
723	{	767	{
		768	LOCK;
724	SAVE (prev, -1); /* first get rid of the old state */	769	SAVE (prev, -1); /* first get rid of the old state */
		770	UNLOCK;
725		771
726	if (flags & TRANSFER_SAVE_CCTXT)	772	if (flags & TRANSFER_SAVE_CCTXT)
727	{	773	{
728	if (!prev->stack)	774	if (!prev->stack)
729	allocate_stack (prev, 0);	775	allocate_stack (prev, 0);
730		776
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	777	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732	{	778	{
		779	PL_top_env = &next->start_env;
		780
733	setup_coro (next);	781	setup_coro (next);
		782	next->cursp = stacklevel;
734		783
735	prev->stack->refcnt++;	784	prev->stack->refcnt++;
736	prev->stack->usecnt++;	785	prev->stack->usecnt++;
737	next->stack = prev->stack;	786	next->stack = prev->stack;
738	next->gencnt = prev->gencnt;	787	next->gencnt = prev->gencnt;
739	}	788	}
740	else	789	else
741	{	790	{
		791	assert (!next->stack);
742	allocate_stack (next, 1);	792	allocate_stack (next, 1);
743	coro_create (&(next->stack->cctx),	793	coro_create (&(next->stack->cctx),
744	setup_coro, (void *)next,	794	setup_coro, (void *)next,
745	next->stack->sptr, labs (next->stack->ssize));	795	next->stack->sptr, labs (next->stack->ssize));
746	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	796	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		797	prev->cursp = stacklevel;
		798	/* don't add any code here */
747	}	799	}
748	}	800	}
749	else	801	else
		802	{
750	setup_coro (next);	803	setup_coro (next);
		804	next->cursp = stacklevel;
		805	}
751	}	806	}
752	}	807	}
753		808
754	next->cursp = stacklevel;	809	LOCK;
755	}	810	if (coro_mortal)
756
757	static struct coro *
758	sv_to_coro (SV arg, const char funcname, const char *varname)
759	{
760	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
761	{	811	{
		812	SvREFCNT_dec (coro_mortal);
		813	coro_mortal = 0;
		814	}
		815	UNLOCK;
		816	}
		817
		818	#define SV_CORO(sv,func) \
		819	do { \
		820	if (SvROK (sv)) \
		821	sv = SvRV (sv); \
		822	\
		823	if (SvTYPE (sv) == SVt_PVHV) \
		824	{ \
762	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	825	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
763		826	\
764	if (!he)	827	if (!he) \
765	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);	828	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
766		829	\
767	arg = HeVAL(he);	830	(sv) = SvRV (HeVAL(he)); \
768	}	831	} \
769		832	\
770	/* must also be changed inside Coro::Cont::yield */	833	/* must also be changed inside Coro::Cont::yield */ \
771	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	834	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
772	return (struct coro ) SvIV((SV)SvRV(arg));
773	else
774	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	835	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		836	\
		837	} while(0)
		838
		839	#define SvSTATE(sv) (struct coro *)SvIV (sv)
		840
		841	static void
		842	api_transfer(pTHX_ SV prev, SV next, int flags)
		843	{
		844	SV_CORO (prev, "Coro::transfer");
		845	SV_CORO (next, "Coro::transfer");
		846
		847	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		848	}
		849
		850	/ Coro ******************************************************************/
		851
		852	#define PRIO_MAX 3
		853	#define PRIO_HIGH 1
		854	#define PRIO_NORMAL 0
		855	#define PRIO_LOW -1
		856	#define PRIO_IDLE -3
		857	#define PRIO_MIN -4
		858
		859	/* for Coro.pm */
		860	static GV coro_current, coro_idle;
		861	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		862	static int coro_nready;
		863
		864	static void
		865	coro_enq (pTHX_ SV *sv)
		866	{
		867	if (SvTYPE (sv) == SVt_PVHV)
		868	{
		869	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
		870	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		871
		872	prio = prio > PRIO_MAX ? PRIO_MAX
		873	: prio < PRIO_MIN ? PRIO_MIN
		874	: prio;
		875
		876	av_push (coro_ready [prio - PRIO_MIN], sv);
		877	coro_nready++;
		878
		879	return;
		880	}
		881
		882	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		883	}
		884
		885	static SV *
		886	coro_deq (pTHX_ int min_prio)
		887	{
		888	int prio = PRIO_MAX - PRIO_MIN;
		889
		890	min_prio -= PRIO_MIN;
		891	if (min_prio < 0)
		892	min_prio = 0;
		893
		894	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		895	if (av_len (coro_ready[prio]) >= 0)
		896	{
		897	coro_nready--;
		898	return av_shift (coro_ready[prio]);
		899	}
		900
		901	return 0;
		902	}
		903
		904	static void
		905	api_ready (SV *coro)
		906	{
		907	dTHX;
		908
		909	if (SvROK (coro))
		910	coro = SvRV (coro);
		911
		912	LOCK;
		913	coro_enq (aTHX_ SvREFCNT_inc (coro));
		914	UNLOCK;
		915	}
		916
		917	static void
		918	api_schedule (void)
		919	{
		920	dTHX;
		921
		922	SV prev, next;
		923
		924	LOCK;
		925
		926	prev = SvRV (GvSV (coro_current));
		927	next = coro_deq (aTHX_ PRIO_MIN);
		928
		929	if (!next)
		930	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		931
		932	/* free this only after the transfer */
		933	coro_mortal = prev;
		934	SV_CORO (prev, "Coro::schedule");
		935
		936	SvRV (GvSV (coro_current)) = next;
		937
		938	SV_CORO (next, "Coro::schedule");
		939
		940	UNLOCK;
		941
		942	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		943	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		944	}
		945
		946	static void
		947	api_cede (void)
		948	{
		949	dTHX;
		950
		951	LOCK;
		952	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		953	UNLOCK;
		954
		955	api_schedule ();
775	}	956	}
776		957
777	MODULE = Coro::State PACKAGE = Coro::State	958	MODULE = Coro::State PACKAGE = Coro::State
778		959
779	PROTOTYPES: ENABLE	960	PROTOTYPES: ENABLE
780		961
781	BOOT:	962	BOOT:
782	{ /* {} necessary for stoopid perl-5.6.x */	963	{ /* {} necessary for stoopid perl-5.6.x */
		964	#ifdef USE_ITHREADS
		965	MUTEX_INIT (&coro_mutex);
		966	#endif
		967
783	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	968	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
784	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	969	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
785	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
786		971
787	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
788	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
789	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	974	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
790	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	975	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
791		976
792	if (!padlist_cache)
793	padlist_cache = newHV ();
794
795	main_mainstack = PL_mainstack;	977	main_mainstack = PL_mainstack;
		978
		979	coroapi.ver = CORO_API_VERSION;
		980	coroapi.transfer = api_transfer;
796	}	981	}
797		982
798	Coro::State	983	Coro::State
799	_newprocess(args)	984	_newprocess(args)
800	SV * args	985	SV * args
…		…
803	Coro__State coro;	988	Coro__State coro;
804		989
805	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	990	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
806	croak ("Coro::State::_newprocess expects an arrayref");	991	croak ("Coro::State::_newprocess expects an arrayref");
807		992
808	New (0, coro, 1, struct coro);	993	Newz (0, coro, 1, struct coro);
809		994
810	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	995	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
811	coro->mainstack = 0; /* actual work is done inside transfer */	996	/coro->mainstack = 0; //actual work is done inside transfer /
812	coro->stack = 0;	997	/coro->stack = 0;/
		998
		999	/* same as JMPENV_BOOTSTRAP */
		1000	/* we might be able to recycle start_env, but safe is safe */
		1001	/Zero(&coro->start_env, 1, JMPENV);/
		1002	coro->start_env.je_ret = -1;
		1003	coro->start_env.je_mustcatch = TRUE;
813		1004
814	RETVAL = coro;	1005	RETVAL = coro;
815	OUTPUT:	1006	OUTPUT:
816	RETVAL	1007	RETVAL
817		1008
818	void	1009	void
819	transfer(prev, next, flags)	1010	transfer(prev, next, flags)
820	Coro::State_or_hashref prev	1011	SV *prev
821	Coro::State_or_hashref next	1012	SV *next
822	int flags	1013	int flags
823	PROTOTYPE: @	1014	PROTOTYPE: @
824	CODE:	1015	CODE:
825	PUTBACK;	1016	PUTBACK;
		1017	SV_CORO (next, "Coro::transfer");
		1018	SV_CORO (prev, "Coro::transfer");
826	transfer (aTHX_ prev, next, flags);	1019	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
827	SPAGAIN;	1020	SPAGAIN;
828		1021
829	void	1022	void
830	DESTROY(coro)	1023	DESTROY(coro)
831	Coro::State coro	1024	Coro::State coro
…		…
833		1026
834	if (coro->mainstack && coro->mainstack != main_mainstack)	1027	if (coro->mainstack && coro->mainstack != main_mainstack)
835	{	1028	{
836	struct coro temp;	1029	struct coro temp;
837		1030
		1031	PUTBACK;
838	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1032	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
839	LOAD(aTHX_ coro);	1033	LOAD (aTHX_ coro);
		1034	SPAGAIN;
840		1035
841	destroy_stacks (aTHX);	1036	destroy_stacks (aTHX);
842		1037
843	LOAD((&temp)); /* this will get rid of defsv etc.. */	1038	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1039	SPAGAIN;
844		1040
845	coro->mainstack = 0;	1041	coro->mainstack = 0;
846	}	1042	}
847		1043
848	deallocate_stack (coro);	1044	deallocate_stack (coro);
849		1045	SvREFCNT_dec (coro->args);
850	Safefree (coro);	1046	Safefree (coro);
851
852	void
853	flush()
854	CODE:
855	#ifdef MAY_FLUSH
856	flush_padlist_cache ();
857	#endif
858		1047
859	void	1048	void
860	_exit(code)	1049	_exit(code)
861	int code	1050	int code
862	PROTOTYPE: $	1051	PROTOTYPE: $
863	CODE:	1052	CODE:
864	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
865	_exit (code);	1053	_exit (code);
866	#else
867	signal (SIGTERM, SIG_DFL);
868	raise (SIGTERM);
869	exit (code);
870	#endif
871		1054
872	MODULE = Coro::State PACKAGE = Coro::Cont	1055	MODULE = Coro::State PACKAGE = Coro::Cont
873		1056
874	# this is slightly dirty (should expose a c-level api)	1057	# this is slightly dirty (should expose a c-level api)
875		1058
876	void	1059	void
877	yield(...)	1060	yield(...)
878	PROTOTYPE: @	1061	PROTOTYPE: @
879	CODE:	1062	CODE:
880	static SV *returnstk;	1063	SV *yieldstack;
881	SV *sv;	1064	SV *sv;
882	AV *defav = GvAV (PL_defgv);	1065	AV *defav = GvAV (PL_defgv);
883	struct coro prev, next;	1066	struct coro prev, next;
884		1067
885	if (!returnstk)	1068	yieldstack = *hv_fetch (
886	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1069	(HV *)SvRV (GvSV (coro_current)),
		1070	"yieldstack", sizeof ("yieldstack") - 1,
		1071	0
		1072	);
887		1073
888	/* set up @_ -- ugly */	1074	/* set up @_ -- ugly */
889	av_clear (defav);	1075	av_clear (defav);
890	av_fill (defav, items - 1);	1076	av_fill (defav, items - 1);
891	while (items--)	1077	while (items--)
892	av_store (defav, items, SvREFCNT_inc (ST(items)));	1078	av_store (defav, items, SvREFCNT_inc (ST(items)));
893		1079
894	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
895	sv = av_pop ((AV *)SvRV (returnstk));	1080	sv = av_pop ((AV *)SvRV (yieldstack));
896	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1081	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
897	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1082	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
898	SvREFCNT_dec (sv);	1083	SvREFCNT_dec (sv);
899		1084
900	transfer(aTHX_ prev, next, 0);	1085	transfer (aTHX_ prev, next, 0);
901		1086
902	MODULE = Coro::State PACKAGE = Coro	1087	MODULE = Coro::State PACKAGE = Coro
903		1088
904	# this is slightly dirty (should expose a c-level api)	1089	# this is slightly dirty (should expose a c-level api)
905		1090
906	BOOT:	1091	BOOT:
907	{	1092	{
		1093	int i;
		1094	HV *stash = gv_stashpv ("Coro", TRUE);
		1095
		1096	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1097	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1098	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1099	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1100	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1101	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1102
908	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1103	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
909	coro_ready = newAV ();
910	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1104	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1105
		1106	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1107	coro_ready[i] = newAV ();
		1108
		1109	{
		1110	SV *sv = perl_get_sv("Coro::API", 1);
		1111
		1112	coroapi.schedule = api_schedule;
		1113	coroapi.cede = api_cede;
		1114	coroapi.ready = api_ready;
		1115	coroapi.nready = &coro_nready;
		1116	coroapi.current = coro_current;
		1117
		1118	GCoroAPI = &coroapi;
		1119	sv_setiv(sv, (IV)&coroapi);
		1120	SvREADONLY_on(sv);
		1121	}
911	}	1122	}
		1123
		1124	#if !PERL_MICRO
912		1125
913	void	1126	void
914	ready(self)	1127	ready(self)
915	SV * self	1128	SV * self
		1129	PROTOTYPE: $
916	CODE:	1130	CODE:
917	av_push (coro_ready, SvREFCNT_inc (self));	1131	api_ready (self);
		1132
		1133	#endif
		1134
		1135	int
		1136	nready(...)
		1137	PROTOTYPE:
		1138	CODE:
		1139	RETVAL = coro_nready;
		1140	OUTPUT:
		1141	RETVAL
918		1142
919	void	1143	void
920	schedule(...)	1144	schedule(...)
921	ALIAS:	1145	PROTOTYPE:
922	cede = 1
923	CODE:	1146	CODE:
924	SV *prev = GvSV (coro_current);	1147	api_schedule ();
925	SV *next = av_shift (coro_ready);
926		1148
927	if (next == &PL_sv_undef)	1149	void
928	next = SvREFCNT_inc (GvSV (coro_idle));	1150	cede(...)
		1151	PROTOTYPE:
		1152	CODE:
		1153	api_cede ();
929		1154
930	if (ix)
931	av_push (coro_ready, SvREFCNT_inc (prev));
932
933	GvSV (coro_current) = SvREFCNT_inc (next);
934	transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),
935	sv_to_coro (next, "Coro::schedule", "next coroutine"),
936	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
937	SvREFCNT_dec (next);
938	SvREFCNT_dec (prev);
939

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Comparing Coro/Coro/State.xs (file contents): Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC vs. Revision 1.67 by root, Mon Dec 12 20:07:44 2005 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC vs.
Revision 1.67 by root, Mon Dec 12 20:07:44 2005 UTC