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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.18 by root, Thu Jul 26 03:46:15 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
		35
		36	#include <signal.h>
6		37
7	#ifdef HAVE_MMAP	38	#ifdef HAVE_MMAP
8	# include <unistd.h>	39	# include <unistd.h>
9	# include <sys/mman.h>	40	# include <sys/mman.h>
10	# ifndef MAP_ANON
11	# ifdef MAP_ANONYMOUS	41	# ifndef MAP_ANONYMOUS
12	# define MAP_ANON MAP_ANONYMOUS	42	# ifdef MAP_ANON
		43	# define MAP_ANONYMOUS MAP_ANON
13	# else	44	# else
14	# undef HAVE_MMAP	45	# undef HAVE_MMAP
15	# endif	46	# endif
16	# endif	47	# endif
17	#endif	48	#endif
18		49
19	#define MAY_FLUSH /* increases codesize */
20
21	/* perl-related */
22	#define TRANSFER_SAVE_DEFAV 0x00000001
23	#define TRANSFER_SAVE_DEFSV 0x00000002
24	#define TRANSFER_SAVE_ERRSV 0x00000004
25	/* c-related */
26	#define TRANSFER_SAVE_CCTXT 0x00000008
27	#ifdef CORO_LAZY_STACK
28	# define TRANSFER_LAZY_STACK 0x00000010
29	#else
30	# define TRANSFER_LAZY_STACK 0x00000000
31	#endif
32
33	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
34	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
35
36	#define SUB_INIT "Coro::State::initialize"	50	#define SUB_INIT "Coro::State::initialize"
37	#define UCORO_STATE "_coro_state"	51	#define UCORO_STATE "_coro_state"
38		52
39	/* 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
40	* 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
41	* and should be unique. */	55	* and should be unique. */
42	#define dSTACKLEVEL void *stacklevel = &stacklevel	56	#define dSTACKLEVEL void *stacklevel = &stacklevel
43		57
		58	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		59
44	#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 */
45		79
46	/* 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... */
47	typedef struct {	81	typedef struct {
48	int refcnt; /* pointer reference counter */	82	int refcnt; /* pointer reference counter */
49	int usecnt; /* shared by how many coroutines */	83	int usecnt; /* shared by how many coroutines */
54	void *sptr;	88	void *sptr;
55	long ssize; /* positive == mmap, otherwise malloc */	89	long ssize; /* positive == mmap, otherwise malloc */
56	} coro_stack;	90	} coro_stack;
57		91
58	struct coro {	92	struct coro {
		93	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		94	JMPENV start_env;
		95
59	/* the optional C context */	96	/* the optional C context */
60	coro_stack *stack;	97	coro_stack *stack;
61	void *cursp;	98	void *cursp;
62	int gencnt;	99	int gencnt;
63		100
…		…
66	SV *defsv;	103	SV *defsv;
67	SV *errsv;	104	SV *errsv;
68		105
69	/* saved global state not related to stacks */	106	/* saved global state not related to stacks */
70	U8 dowarn;	107	U8 dowarn;
		108	I32 in_eval;
71		109
72	/* the stacks and related info (callchain etc..) */	110	/* the stacks and related info (callchain etc..) */
73	PERL_SI *curstackinfo;	111	PERL_SI *curstackinfo;
74	AV *curstack;	112	AV *curstack;
75	AV *mainstack;	113	AV *mainstack;
76	SV **stack_sp;	114	SV **stack_sp;
77	OP *op;	115	OP *op;
78	SV **curpad;	116	SV **curpad;
		117	AV *comppad;
		118	CV *compcv;
79	SV **stack_base;	119	SV **stack_base;
80	SV **stack_max;	120	SV **stack_max;
81	SV **tmps_stack;	121	SV **tmps_stack;
82	I32 tmps_floor;	122	I32 tmps_floor;
83	I32 tmps_ix;	123	I32 tmps_ix;
…		…
92	I32 savestack_ix;	132	I32 savestack_ix;
93	I32 savestack_max;	133	I32 savestack_max;
94	OP **retstack;	134	OP **retstack;
95	I32 retstack_ix;	135	I32 retstack_ix;
96	I32 retstack_max;	136	I32 retstack_max;
		137	PMOP *curpm;
97	COP *curcop;	138	COP *curcop;
98	JMPENV start_env;
99	JMPENV *top_env;	139	JMPENV *top_env;
100		140
101	/* data associated with this coroutine (initial args) */	141	/* data associated with this coroutine (initial args) */
102	AV *args;	142	AV *args;
103	};	143	};
104		144
105	typedef struct coro *Coro__State;	145	typedef struct coro *Coro__State;
106	typedef struct coro *Coro__State_or_hashref;	146	typedef struct coro *Coro__State_or_hashref;
107		147
108	static AV main_mainstack; / used to differentiate between $main and others */
109	static HV *coro_state_stash;
110	static SV *ucoro_state_sv;
111	static U32 ucoro_state_hash;
112	static HV *padlist_cache;
113
114	/* mostly copied from op.c:cv_clone2 */	148	/* mostly copied from op.c:cv_clone2 */
115	STATIC AV *	149	STATIC AV *
116	clone_padlist (AV *protopadlist)	150	clone_padlist (pTHX_ AV *protopadlist)
117	{	151	{
118	AV *av;	152	AV *av;
119	I32 ix;	153	I32 ix;
120	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	154	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
121	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	155	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
145	AvFLAGS (av) = AVf_REIFY;	179	AvFLAGS (av) = AVf_REIFY;
146		180
147	for (ix = fpad; ix > 0; ix--)	181	for (ix = fpad; ix > 0; ix--)
148	{	182	{
149	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	183	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		184
150	if (namesv && namesv != &PL_sv_undef)	185	if (namesv && namesv != &PL_sv_undef)
151	{	186	{
152	char name = SvPVX (namesv); / XXX */	187	char name = SvPVX (namesv); / XXX */
		188
153	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	189	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
154	{ /* lexical from outside? */	190	{ /* lexical from outside? */
155	npad[ix] = SvREFCNT_inc (ppad[ix]);	191	npad[ix] = SvREFCNT_inc (ppad[ix]);
156	}	192	}
157	else	193	else
…		…
163	sv = (SV *) newAV ();	199	sv = (SV *) newAV ();
164	else if (*name == '%')	200	else if (*name == '%')
165	sv = (SV *) newHV ();	201	sv = (SV *) newHV ();
166	else	202	else
167	sv = NEWSV (0, 0);	203	sv = NEWSV (0, 0);
		204
		205	#ifdef SvPADBUSY
168	if (!SvPADBUSY (sv))	206	if (!SvPADBUSY (sv))
		207	#endif
169	SvPADMY_on (sv);	208	SvPADMY_on (sv);
		209
170	npad[ix] = sv;	210	npad[ix] = sv;
171	}	211	}
172	}	212	}
173	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	213	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
174	{	214	{
…		…
203	#endif	243	#endif
204		244
205	return newpadlist;	245	return newpadlist;
206	}	246	}
207		247
208	#ifdef MAY_FLUSH	248	STATIC void
209	STATIC AV *
210	free_padlist (AV *padlist)	249	free_padlist (pTHX_ AV *padlist)
211	{	250	{
212	/* may be during global destruction */	251	/* may be during global destruction */
213	if (SvREFCNT(padlist))	252	if (SvREFCNT (padlist))
214	{	253	{
215	I32 i = AvFILLp(padlist);	254	I32 i = AvFILLp (padlist);
216	while (i >= 0)	255	while (i >= 0)
217	{	256	{
218	SV **svp = av_fetch(padlist, i--, FALSE);	257	SV **svp = av_fetch (padlist, i--, FALSE);
219	SV sv = svp ? svp : Nullsv;
220	if (sv)	258	if (svp)
		259	{
		260	SV *sv;
		261	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
221	SvREFCNT_dec(sv);	262	SvREFCNT_dec (sv);
		263
		264	SvREFCNT_dec (*svp);
		265	}
222	}	266	}
223		267
224	SvREFCNT_dec((SV*)padlist);	268	SvREFCNT_dec ((SV*)padlist);
225	}	269	}
226	}	270	}
227	#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};
228		288
229	/* the next two functions merely cache the padlists */	289	/* the next two functions merely cache the padlists */
230	STATIC void	290	STATIC void
231	get_padlist (CV *cv)	291	get_padlist (pTHX_ CV *cv)
232	{	292	{
233	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	293	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
234		294
235	if (he && AvFILLp ((AV )he) >= 0)	295	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
236	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	296	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
237	else	297	else
238	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	298	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
239	}	299	}
240		300
241	STATIC void	301	STATIC void
242	put_padlist (CV *cv)	302	put_padlist (pTHX_ CV *cv)
243	{	303	{
244	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	304	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
245		305
246	if (SvTYPE (*he) != SVt_PVAV)	306	if (!mg)
247	{	307	{
248	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;
249	he = (SV )newAV ();	311	mg->mg_obj = (SV *)newAV ();
250	}	312	}
251		313
252	av_push ((AV )he, (SV *)CvPADLIST (cv));	314	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
253	}	315	}
254
255	#ifdef MAY_FLUSH
256	STATIC void
257	flush_padlist_cache ()
258	{
259	HV *hv = padlist_cache;
260	padlist_cache = newHV ();
261
262	if (hv_iterinit (hv))
263	{
264	HE *he;
265	AV *padlist;
266
267	while (!!(he = hv_iternext (hv)))
268	{
269	AV av = (AV )HeVAL(he);
270
271	/* casting is fun. */
272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
273	free_padlist (padlist);
274	}
275	}
276
277	SvREFCNT_dec (hv);
278	}
279	#endif
280		316
281	#define SB do {	317	#define SB do {
282	#define SE } while (0)	318	#define SE } while (0)
283		319
284	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	320	#define LOAD(state) load_state(aTHX_ (state));
285	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	321	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
286		322
287	#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
288		324
289	static void	325	static void
290	load_state(pTHX_ Coro__State c)	326	load_state(pTHX_ Coro__State c)
291	{	327	{
292	PL_dowarn = c->dowarn;	328	PL_dowarn = c->dowarn;
		329	PL_in_eval = c->in_eval;
293		330
294	PL_curstackinfo = c->curstackinfo;	331	PL_curstackinfo = c->curstackinfo;
295	PL_curstack = c->curstack;	332	PL_curstack = c->curstack;
296	PL_mainstack = c->mainstack;	333	PL_mainstack = c->mainstack;
297	PL_stack_sp = c->stack_sp;	334	PL_stack_sp = c->stack_sp;
298	PL_op = c->op;	335	PL_op = c->op;
299	PL_curpad = c->curpad;	336	PL_curpad = c->curpad;
		337	PL_comppad = c->comppad;
		338	PL_compcv = c->compcv;
300	PL_stack_base = c->stack_base;	339	PL_stack_base = c->stack_base;
301	PL_stack_max = c->stack_max;	340	PL_stack_max = c->stack_max;
302	PL_tmps_stack = c->tmps_stack;	341	PL_tmps_stack = c->tmps_stack;
303	PL_tmps_floor = c->tmps_floor;	342	PL_tmps_floor = c->tmps_floor;
304	PL_tmps_ix = c->tmps_ix;	343	PL_tmps_ix = c->tmps_ix;
…		…
313	PL_savestack_ix = c->savestack_ix;	352	PL_savestack_ix = c->savestack_ix;
314	PL_savestack_max = c->savestack_max;	353	PL_savestack_max = c->savestack_max;
315	PL_retstack = c->retstack;	354	PL_retstack = c->retstack;
316	PL_retstack_ix = c->retstack_ix;	355	PL_retstack_ix = c->retstack_ix;
317	PL_retstack_max = c->retstack_max;	356	PL_retstack_max = c->retstack_max;
		357	PL_curpm = c->curpm;
318	PL_curcop = c->curcop;	358	PL_curcop = c->curcop;
319	PL_start_env = c->start_env;
320	PL_top_env = c->top_env;	359	PL_top_env = c->top_env;
321		360
322	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	361	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
323	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	362	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
324	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	363	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
332	{	371	{
333	AV padlist = (AV )POPs;	372	AV padlist = (AV )POPs;
334		373
335	if (padlist)	374	if (padlist)
336	{	375	{
337	put_padlist (cv); /* mark this padlist as available */	376	put_padlist (aTHX_ cv); /* mark this padlist as available */
338	CvPADLIST(cv) = padlist;	377	CvPADLIST(cv) = padlist;
339	#ifdef USE_THREADS
340	/CvOWNER(cv) = (struct perl_thread )POPs;*/
341	#endif
342	}	378	}
343		379
344	++CvDEPTH(cv);	380	++CvDEPTH(cv);
345	}	381	}
346		382
…		…
364		400
365	PUSHs (Nullsv);	401	PUSHs (Nullsv);
366	/* this loop was inspired by pp_caller */	402	/* this loop was inspired by pp_caller */
367	for (;;)	403	for (;;)
368	{	404	{
369	do	405	while (cxix >= 0)
370	{	406	{
371	PERL_CONTEXT *cx = &ccstk[cxix--];	407	PERL_CONTEXT *cx = &ccstk[cxix--];
372		408
373	if (CxTYPE(cx) == CXt_SUB)	409	if (CxTYPE(cx) == CXt_SUB)
374	{	410	{
375	CV *cv = cx->blk_sub.cv;	411	CV *cv = cx->blk_sub.cv;
376	if (CvDEPTH(cv))	412	if (CvDEPTH(cv))
377	{	413	{
378	#ifdef USE_THREADS
379	/XPUSHs ((SV )CvOWNER(cv));*/
380	/CvOWNER(cv) = 0;/
381	/error must unlock this cv etc.. etc.../
382	#endif
383	EXTEND (SP, CvDEPTH(cv)*2);	414	EXTEND (SP, CvDEPTH(cv)*2);
384		415
385	while (--CvDEPTH(cv))	416	while (--CvDEPTH(cv))
386	{	417	{
387	/* this tells the restore code to increment CvDEPTH */	418	/* this tells the restore code to increment CvDEPTH */
…		…
390	}	421	}
391		422
392	PUSHs ((SV *)CvPADLIST(cv));	423	PUSHs ((SV *)CvPADLIST(cv));
393	PUSHs ((SV *)cv);	424	PUSHs ((SV *)cv);
394		425
395	get_padlist (cv); /* this is a monster */	426	get_padlist (aTHX_ cv); /* this is a monster */
396	}	427	}
397	}	428	}
		429	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)	430	else if (CxTYPE(cx) == CXt_FORMAT)
399	{	431	{
400	/* 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? */
401	/* my bold guess is as a simple, plain sub... */	433	/* my bold guess is as a simple, plain sub... */
402	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");
403	}	435	}
		436	#endif
404	}	437	}
405	while (cxix >= 0);
406		438
407	if (top_si->si_type == PERLSI_MAIN)	439	if (top_si->si_type == PERLSI_MAIN)
408	break;	440	break;
409		441
410	top_si = top_si->si_prev;	442	top_si = top_si->si_prev;
…		…
417		449
418	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;
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	451	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	452	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
421		453
422	/* I have not the slightest idea of why av_reify is necessary */
423	/* but if it's missing the defav contents magically get replaced sometimes */
424	if (c->defav)
425	av_reify (c->defav);
426
427	c->dowarn = PL_dowarn;	454	c->dowarn = PL_dowarn;
		455	c->in_eval = PL_in_eval;
428		456
429	c->curstackinfo = PL_curstackinfo;	457	c->curstackinfo = PL_curstackinfo;
430	c->curstack = PL_curstack;	458	c->curstack = PL_curstack;
431	c->mainstack = PL_mainstack;	459	c->mainstack = PL_mainstack;
432	c->stack_sp = PL_stack_sp;	460	c->stack_sp = PL_stack_sp;
433	c->op = PL_op;	461	c->op = PL_op;
434	c->curpad = PL_curpad;	462	c->curpad = PL_curpad;
		463	c->comppad = PL_comppad;
		464	c->compcv = PL_compcv;
435	c->stack_base = PL_stack_base;	465	c->stack_base = PL_stack_base;
436	c->stack_max = PL_stack_max;	466	c->stack_max = PL_stack_max;
437	c->tmps_stack = PL_tmps_stack;	467	c->tmps_stack = PL_tmps_stack;
438	c->tmps_floor = PL_tmps_floor;	468	c->tmps_floor = PL_tmps_floor;
439	c->tmps_ix = PL_tmps_ix;	469	c->tmps_ix = PL_tmps_ix;
…		…
448	c->savestack_ix = PL_savestack_ix;	478	c->savestack_ix = PL_savestack_ix;
449	c->savestack_max = PL_savestack_max;	479	c->savestack_max = PL_savestack_max;
450	c->retstack = PL_retstack;	480	c->retstack = PL_retstack;
451	c->retstack_ix = PL_retstack_ix;	481	c->retstack_ix = PL_retstack_ix;
452	c->retstack_max = PL_retstack_max;	482	c->retstack_max = PL_retstack_max;
		483	c->curpm = PL_curpm;
453	c->curcop = PL_curcop;	484	c->curcop = PL_curcop;
454	c->start_env = PL_start_env;
455	c->top_env = PL_top_env;	485	c->top_env = PL_top_env;
456	}	486	}
457		487
458	/*	488	/*
459	* allocate various perl stacks. This is an exact copy	489	* allocate various perl stacks. This is an exact copy
460	* of perl.c:init_stacks, except that it uses less memory	490	* of perl.c:init_stacks, except that it uses less memory
461	* on the assumption that coroutines do not usually need	491	* on the (sometimes correct) assumption that coroutines do
462	* a lot of stackspace.	492	* not usually need a lot of stackspace.
463	*/	493	*/
464	STATIC void	494	STATIC void
465	coro_init_stacks (pTHX)	495	coro_init_stacks (pTHX)
466	{	496	{
		497	LOCK;
		498
467	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	499	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
468	PL_curstackinfo->si_type = PERLSI_MAIN;	500	PL_curstackinfo->si_type = PERLSI_MAIN;
469	PL_curstack = PL_curstackinfo->si_stack;	501	PL_curstack = PL_curstackinfo->si_stack;
470	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	502	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
471		503
…		…
480		512
481	New(54,PL_markstack,16,I32);	513	New(54,PL_markstack,16,I32);
482	PL_markstack_ptr = PL_markstack;	514	PL_markstack_ptr = PL_markstack;
483	PL_markstack_max = PL_markstack + 16;	515	PL_markstack_max = PL_markstack + 16;
484		516
		517	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	518	SET_MARK_OFFSET;
		519	#endif
486		520
487	New(54,PL_scopestack,16,I32);	521	New(54,PL_scopestack,16,I32);
488	PL_scopestack_ix = 0;	522	PL_scopestack_ix = 0;
489	PL_scopestack_max = 16;	523	PL_scopestack_max = 16;
490		524
…		…
493	PL_savestack_max = 96;	527	PL_savestack_max = 96;
494		528
495	New(54,PL_retstack,8,OP*);	529	New(54,PL_retstack,8,OP*);
496	PL_retstack_ix = 0;	530	PL_retstack_ix = 0;
497	PL_retstack_max = 8;	531	PL_retstack_max = 8;
		532
		533	UNLOCK;
498	}	534	}
499		535
500	/*	536	/*
501	* destroy the stacks, the callchain etc...	537	* destroy the stacks, the callchain etc...
502	* still there is a memleak of 128 bytes...
503	*/	538	*/
504	STATIC void	539	STATIC void
505	destroy_stacks(pTHX)	540	destroy_stacks(pTHX)
506	{	541	{
		542	if (!IN_DESTRUCT)
		543	{
507	/* is this ugly, I ask? */	544	/* is this ugly, I ask? */
508	while (PL_scopestack_ix)	545	LEAVE_SCOPE (0);
509	LEAVE;
510		546
511	/* sure it is, but more important: is it correct?? :/ */	547	/* sure it is, but more important: is it correct?? :/ */
512	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
513	FREETMPS;	548	FREETMPS;
		549
		550	/POPSTACK_TO (PL_mainstack);//D//use/
		551	}
514		552
515	while (PL_curstackinfo->si_next)	553	while (PL_curstackinfo->si_next)
516	PL_curstackinfo = PL_curstackinfo->si_next;	554	PL_curstackinfo = PL_curstackinfo->si_next;
517		555
518	while (PL_curstackinfo)	556	while (PL_curstackinfo)
519	{	557	{
520	PERL_SI *p = PL_curstackinfo->si_prev;	558	PERL_SI *p = PL_curstackinfo->si_prev;
521		559
522	{	560	{ /D//remove/
523	dSP;	561	dSP;
524	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	562	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
525	PUTBACK; /* possibly superfluous */	563	PUTBACK; /* possibly superfluous */
526	}	564	}
527		565
528	dounwind(-1);	566	if (!IN_DESTRUCT)
529		567	{
		568	dounwind (-1);/D//remove/
530	SvREFCNT_dec(PL_curstackinfo->si_stack);	569	SvREFCNT_dec (PL_curstackinfo->si_stack);
		570	}
		571
531	Safefree(PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
532	Safefree(PL_curstackinfo);	573	Safefree (PL_curstackinfo);
533	PL_curstackinfo = p;	574	PL_curstackinfo = p;
534	}	575	}
535		576
536	Safefree(PL_tmps_stack);	577	Safefree (PL_tmps_stack);
537	Safefree(PL_markstack);	578	Safefree (PL_markstack);
538	Safefree(PL_scopestack);	579	Safefree (PL_scopestack);
539	Safefree(PL_savestack);	580	Safefree (PL_savestack);
540	Safefree(PL_retstack);	581	Safefree (PL_retstack);
541	}	582	}
542		583
543	static void	584	static void
544	allocate_stack (Coro__State ctx, int alloc)	585	allocate_stack (Coro__State ctx, int alloc)
545	{	586	{
…		…
548	New (0, stack, 1, coro_stack);	589	New (0, stack, 1, coro_stack);
549		590
550	stack->refcnt = 1;	591	stack->refcnt = 1;
551	stack->usecnt = 1;	592	stack->usecnt = 1;
552	stack->gencnt = ctx->gencnt = 0;	593	stack->gencnt = ctx->gencnt = 0;
		594
553	if (alloc)	595	if (alloc)
554	{	596	{
555	#ifdef HAVE_MMAP	597	#if HAVE_MMAP
556	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 */
557	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);
558	if (stack->sptr == (void *)-1)	600	if (stack->sptr == (void *)-1)
559	#endif	601	#endif
560	{	602	{
561	/FIXME//D//* reasonable stack size! */	603	/FIXME//D//* reasonable stack size! */
562	stack->ssize = -4096 * sizeof (long);	604	stack->ssize = - (STACKSIZE * sizeof (long));
563	New (0, stack->sptr, 4096, long);	605	New (0, stack->sptr, STACKSIZE, long);
564	}	606	}
565	}	607	}
566	else	608	else
567	stack->sptr = 0;	609	stack->sptr = 0;
568		610
…		…
582	{	624	{
583	#ifdef HAVE_MMAP	625	#ifdef HAVE_MMAP
584	if (stack->ssize > 0 && stack->sptr)	626	if (stack->ssize > 0 && stack->sptr)
585	munmap (stack->sptr, stack->ssize);	627	munmap (stack->sptr, stack->ssize);
586	else	628	else
587	#else	629	#endif
588	Safefree (stack->sptr);	630	Safefree (stack->sptr);
589	#endif	631
590	Safefree (stack);	632	Safefree (stack);
591	}	633	}
592	else if (ctx->gencnt == stack->gencnt)	634	else if (ctx->gencnt == stack->gencnt)
593	--stack->usecnt;	635	--stack->usecnt;
594	}	636	}
…		…
598	setup_coro (void *arg)	640	setup_coro (void *arg)
599	{	641	{
600	/*	642	/*
601	* emulate part of the perl startup here.	643	* emulate part of the perl startup here.
602	*/	644	*/
		645	dTHX;
603	dSP;	646	dSP;
604	Coro__State ctx = (Coro__State)arg;	647	Coro__State ctx = (Coro__State)arg;
605	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	648	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
606		649
607	coro_init_stacks (aTHX);	650	coro_init_stacks (aTHX);
608	JMPENV_BOOTSTRAP;	651	/PL_curcop = 0;/
		652	/PL_in_eval = PL_in_eval;/ /* inherit */
		653	SvREFCNT_dec (GvAV (PL_defgv));
		654	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		655
609	SPAGAIN;	656	SPAGAIN;
610
611	/PL_curcop = 0;/
612	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args;
614		657
615	if (ctx->stack)	658	if (ctx->stack)
616	{	659	{
617	ctx->cursp = 0;	660	ctx->cursp = 0;
618		661
619	PUSHMARK(SP);	662	PUSHMARK(SP);
620	PUTBACK;	663	PUTBACK;
621	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	664	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		665
		666	if (SvTRUE (ERRSV))
		667	croak (NULL);
		668	else
622	croak ("FATAL: CCTXT coroutine returned!");	669	croak ("FATAL: CCTXT coroutine returned!");
623	}	670	}
624	else	671	else
625	{	672	{
626	UNOP myop;	673	UNOP myop;
627		674
…		…
639	* that doesn't matter, though, since it is only	686	* that doesn't matter, though, since it is only
640	* pp_nextstate and we never return...	687	* pp_nextstate and we never return...
641	* ah yes, and I don't care anyways ;)	688	* ah yes, and I don't care anyways ;)
642	*/	689	*/
643	PUTBACK;	690	PUTBACK;
644	PL_op = pp_entersub();	691	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
645	SPAGAIN;	692	SPAGAIN;
646		693
647	ENTER; /* necessary e.g. for dounwind */	694	ENTER; /* necessary e.g. for dounwind */
648	}	695	}
649	}	696	}
…		…
652	continue_coro (void *arg)	699	continue_coro (void *arg)
653	{	700	{
654	/*	701	/*
655	* this is a _very_ stripped down perl interpreter ;)	702	* this is a _very_ stripped down perl interpreter ;)
656	*/	703	*/
		704	dTHX;
657	Coro__State ctx = (Coro__State)arg;	705	Coro__State ctx = (Coro__State)arg;
		706	JMPENV coro_start_env;
		707
		708	PL_top_env = &ctx->start_env;
658		709
659	ctx->cursp = 0;	710	ctx->cursp = 0;
660	PL_op = PL_op->op_next;	711	PL_op = PL_op->op_next;
661	CALLRUNOPS(aTHX);	712	CALLRUNOPS(aTHX);
662	/NORETURN/	713
663	abort ();	714	abort ();
664	}	715	}
665		716
666	STATIC void	717	STATIC void
667	transfer(pTHX_ struct coro prev, struct coro next, int flags)	718	transfer (pTHX_ struct coro prev, struct coro next, int flags)
668	{	719	{
669	dSP;
670	dSTACKLEVEL;	720	dSTACKLEVEL;
671		721
672	if (prev != next)	722	if (prev != next)
673	{	723	{
674	if (next->mainstack)	724	if (next->mainstack)
675	{	725	{
		726	LOCK;
676	SAVE (prev, flags);	727	SAVE (prev, flags);
677	LOAD (next);	728	LOAD (next);
		729	UNLOCK;
678		730
679	/* mark this state as in-use */	731	/* mark this state as in-use */
680	next->mainstack = 0;	732	next->mainstack = 0;
681	next->tmps_ix = -2;	733	next->tmps_ix = -2;
682		734
…		…
701	continue_coro, (void *)next,	753	continue_coro, (void *)next,
702	next->stack->sptr, labs (next->stack->ssize));	754	next->stack->sptr, labs (next->stack->ssize));
703	}	755	}
704		756
705	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 */
706	}	760	}
707		761	else
		762	next->cursp = stacklevel;
708	}	763	}
709	else if (next->tmps_ix == -2)	764	else if (next->tmps_ix == -2)
710	croak ("tried to transfer to running coroutine");	765	croak ("tried to transfer to running coroutine");
711	else	766	else
712	{	767	{
		768	LOCK;
713	SAVE (prev, -1); /* first get rid of the old state */	769	SAVE (prev, -1); /* first get rid of the old state */
		770	UNLOCK;
714		771
715	if (flags & TRANSFER_SAVE_CCTXT)	772	if (flags & TRANSFER_SAVE_CCTXT)
716	{	773	{
717	if (!prev->stack)	774	if (!prev->stack)
718	allocate_stack (prev, 0);	775	allocate_stack (prev, 0);
719		776
720	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	777	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
721	{	778	{
		779	PL_top_env = &next->start_env;
		780
722	setup_coro (next);	781	setup_coro (next);
		782	next->cursp = stacklevel;
723		783
724	prev->stack->refcnt++;	784	prev->stack->refcnt++;
725	prev->stack->usecnt++;	785	prev->stack->usecnt++;
726	next->stack = prev->stack;	786	next->stack = prev->stack;
727	next->gencnt = prev->gencnt;	787	next->gencnt = prev->gencnt;
728	}	788	}
729	else	789	else
730	{	790	{
		791	assert (!next->stack);
731	allocate_stack (next, 1);	792	allocate_stack (next, 1);
732	coro_create (&(next->stack->cctx),	793	coro_create (&(next->stack->cctx),
733	setup_coro, (void *)next,	794	setup_coro, (void *)next,
734	next->stack->sptr, labs (next->stack->ssize));	795	next->stack->sptr, labs (next->stack->ssize));
735	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 */
736	}	799	}
737	}	800	}
738	else	801	else
		802	{
739	setup_coro (next);	803	setup_coro (next);
		804	next->cursp = stacklevel;
		805	}
740	}	806	}
741	}	807	}
742		808
743	next->cursp = stacklevel;	809	LOCK;
		810	if (coro_mortal)
		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	{ \
		825	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		826	\
		827	if (!he) \
		828	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		829	\
		830	(sv) = SvRV (HeVAL(he)); \
		831	} \
		832	\
		833	/* must also be changed inside Coro::Cont::yield */ \
		834	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		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 ();
744	}	956	}
745		957
746	MODULE = Coro::State PACKAGE = Coro::State	958	MODULE = Coro::State PACKAGE = Coro::State
747		959
748	PROTOTYPES: ENABLE	960	PROTOTYPES: ENABLE
749		961
750	BOOT:	962	BOOT:
751	{ /* {} 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
752	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	968	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
753	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	969	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
754	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
755		971
756	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
757	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
758	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	974	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
759	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	975	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
760		976
761	if (!padlist_cache)
762	padlist_cache = newHV ();
763
764	main_mainstack = PL_mainstack;	977	main_mainstack = PL_mainstack;
		978
		979	coroapi.ver = CORO_API_VERSION;
		980	coroapi.transfer = api_transfer;
765	}	981	}
766		982
767	Coro::State	983	Coro::State
768	_newprocess(args)	984	_newprocess(args)
769	SV * args	985	SV * args
…		…
772	Coro__State coro;	988	Coro__State coro;
773		989
774	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	990	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
775	croak ("Coro::State::_newprocess expects an arrayref");	991	croak ("Coro::State::_newprocess expects an arrayref");
776		992
777	New (0, coro, 1, struct coro);	993	Newz (0, coro, 1, struct coro);
778		994
779	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	995	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
780	coro->mainstack = 0; /* actual work is done inside transfer */	996	/coro->mainstack = 0; //actual work is done inside transfer /
781	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;
782		1004
783	RETVAL = coro;	1005	RETVAL = coro;
784	OUTPUT:	1006	OUTPUT:
785	RETVAL	1007	RETVAL
786		1008
787	void	1009	void
788	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	1010	transfer(prev, next, flags)
789	Coro::State_or_hashref prev	1011	SV *prev
790	Coro::State_or_hashref next	1012	SV *next
791	int flags	1013	int flags
792	PROTOTYPE: @	1014	PROTOTYPE: @
793	CODE:	1015	CODE:
		1016	PUTBACK;
		1017	SV_CORO (next, "Coro::transfer");
		1018	SV_CORO (prev, "Coro::transfer");
794	transfer (aTHX_ prev, next, flags);	1019	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		1020	SPAGAIN;
795		1021
796	void	1022	void
797	DESTROY(coro)	1023	DESTROY(coro)
798	Coro::State coro	1024	Coro::State coro
799	CODE:	1025	CODE:
800		1026
801	if (coro->mainstack && coro->mainstack != main_mainstack)	1027	if (coro->mainstack && coro->mainstack != main_mainstack)
802	{	1028	{
803	struct coro temp;	1029	struct coro temp;
804		1030
		1031	PUTBACK;
805	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1032	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
806	LOAD(aTHX_ coro);	1033	LOAD (aTHX_ coro);
		1034	SPAGAIN;
807		1035
808	destroy_stacks (aTHX);	1036	destroy_stacks (aTHX);
809		1037
810	LOAD((&temp)); /* this will get rid of defsv etc.. */	1038	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		1039	SPAGAIN;
811		1040
812	coro->mainstack = 0;	1041	coro->mainstack = 0;
813	}	1042	}
814		1043
815	deallocate_stack (coro);	1044	deallocate_stack (coro);
816		1045	SvREFCNT_dec (coro->args);
817	Safefree (coro);	1046	Safefree (coro);
818		1047
819	void	1048	void
820	flush()	1049	_exit(code)
		1050	int code
		1051	PROTOTYPE: $
821	CODE:	1052	CODE:
822	#ifdef MAY_FLUSH	1053	_exit (code);
823	flush_padlist_cache ();
824	#endif
825		1054
826	MODULE = Coro::State PACKAGE = Coro::Cont	1055	MODULE = Coro::State PACKAGE = Coro::Cont
827		1056
828	# this is slightly dirty	1057	# this is slightly dirty (should expose a c-level api)
829		1058
830	void	1059	void
831	yield(...)	1060	yield(...)
832	PROTOTYPE: @	1061	PROTOTYPE: @
833	CODE:	1062	CODE:
834	static SV *returnstk;	1063	SV *yieldstack;
835	SV *sv;	1064	SV *sv;
836	AV *defav = GvAV (PL_defgv);	1065	AV *defav = GvAV (PL_defgv);
837	struct coro prev, next;	1066	struct coro prev, next;
838		1067
839	if (!returnstk)	1068	yieldstack = *hv_fetch (
840	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1069	(HV *)SvRV (GvSV (coro_current)),
		1070	"yieldstack", sizeof ("yieldstack") - 1,
		1071	0
		1072	);
841		1073
842	/* set up @_ -- ugly */	1074	/* set up @_ -- ugly */
843	av_clear (defav);	1075	av_clear (defav);
844	av_fill (defav, items - 1);	1076	av_fill (defav, items - 1);
845	while (items--)	1077	while (items--)
846	av_store (defav, items, SvREFCNT_inc (ST(items)));	1078	av_store (defav, items, SvREFCNT_inc (ST(items)));
847		1079
848	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
849	sv = av_pop ((AV *)SvRV (returnstk));	1080	sv = av_pop ((AV *)SvRV (yieldstack));
850	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)));
851	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)));
852	SvREFCNT_dec (sv);	1083	SvREFCNT_dec (sv);
853		1084
854	transfer(aTHX_ prev, next, 0);	1085	transfer (aTHX_ prev, next, 0);
855		1086
		1087	MODULE = Coro::State PACKAGE = Coro
		1088
		1089	# this is slightly dirty (should expose a c-level api)
		1090
		1091	BOOT:
		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
		1103	coro_current = gv_fetchpv ("Coro::current", 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	}
		1122	}
		1123
		1124	#if !PERL_MICRO
		1125
		1126	void
		1127	ready(self)
		1128	SV * self
		1129	PROTOTYPE: $
		1130	CODE:
		1131	api_ready (self);
		1132
		1133	#endif
		1134
		1135	int
		1136	nready(...)
		1137	PROTOTYPE:
		1138	CODE:
		1139	RETVAL = coro_nready;
		1140	OUTPUT:
		1141	RETVAL
		1142
		1143	void
		1144	schedule(...)
		1145	PROTOTYPE:
		1146	CODE:
		1147	api_schedule ();
		1148
		1149	void
		1150	cede(...)
		1151	PROTOTYPE:
		1152	CODE:
		1153	api_cede ();
		1154

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Comparing Coro/Coro/State.xs (file contents): Revision 1.18 by root, Thu Jul 26 03:46:15 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 1.18 by root, Thu Jul 26 03:46:15 2001 UTC vs.
Revision 1.67 by root, Mon Dec 12 20:07:44 2005 UTC