[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 1.83 by root, Mon Nov 20 22:32:44 2006 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 <errno.h>
		33
		34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		35	# undef STACKGUARD
		36	#endif
		37
		38	#ifndef STACKGUARD
		39	# define STACKGUARD 0
		40	#endif
6		41
7	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
8	# include <unistd.h>	43	# include <unistd.h>
9	# include <sys/mman.h>	44	# include <sys/mman.h>
		45	# ifndef MAP_ANONYMOUS
		46	# ifdef MAP_ANON
		47	# define MAP_ANONYMOUS MAP_ANON
		48	# else
		49	# undef HAVE_MMAP
		50	# endif
10	#endif	51	# endif
11		52	# include <limits.h>
12	#define MAY_FLUSH /* increases codesize */	53	# ifndef PAGESIZE
13		54	# define PAGESIZE pagesize
14	#define TRANSFER_SAVE_DEFAV 0x00000001	55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
15	#define TRANSFER_SAVE_DEFSV 0x00000002	56	static long pagesize;
16	#define TRANSFER_SAVE_ERRSV 0x00000004	57	# else
17	#define TRANSFER_SAVE_CCTXT 0x00000008	58	# define BOOT_PAGESIZE
18		59	# endif
19	#define TRANSFER_SAVE_ALL -1	60	#endif
20		61
21	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
22	#define UCORO_STATE "_coro_state"	63	#define UCORO_STATE "_coro_state"
23		64
		65	/* The next macro should declare a variable stacklevel that contains and approximation
		66	* to the current C stack pointer. Its property is that it changes with each call
		67	* and should be unique. */
		68	#define dSTACKLEVEL void *stacklevel = &stacklevel
		69
		70	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		71
		72	#define labs(l) ((l) >= 0 ? (l) : -(l))
		73
		74	#include "CoroAPI.h"
		75
		76	#ifdef USE_ITHREADS
		77	static perl_mutex coro_mutex;
		78	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		79	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		80	#else
		81	# define LOCK (void)0
		82	# define UNLOCK (void)0
		83	#endif
		84
		85	static struct CoroAPI coroapi;
		86	static AV main_mainstack; / used to differentiate between $main and others */
		87	static HV *coro_state_stash;
		88	static SV *ucoro_state_sv;
		89	static U32 ucoro_state_hash;
		90	static SV coro_mortal; / will be freed after next transfer */
		91
		92	/* this is actually not only the c stack but also c registers etc... */
		93	typedef struct {
		94	int refcnt; /* pointer reference counter */
		95	int usecnt; /* shared by how many coroutines */
		96	int gencnt; /* generation counter */
		97
		98	coro_context cctx;
		99
		100	void *sptr;
		101	long ssize; /* positive == mmap, otherwise malloc */
		102	} coro_stack;
		103
24	struct coro {	104	struct coro {
25	/* the optional C context */	105	/* the optional C context */
26	coro_context cctx;	106	coro_stack *stack;
27	void *sptr;	107	void *cursp;
28	long ssize;	108	int gencnt;
29		109
30	/* optionally saved, might be zero */	110	/* optionally saved, might be zero */
31	AV *defav;	111	AV *defav;
32	SV *defsv;	112	SV *defsv;
33	SV *errsv;	113	SV *errsv;
34		114
35	/* saved global state not related to stacks */	115	/* saved global state not related to stacks */
36	U8 dowarn;	116	U8 dowarn;
		117	I32 in_eval;
37		118
38	/* the stacks and related info (callchain etc..) */	119	/* the stacks and related info (callchain etc..) */
39	PERL_SI *curstackinfo;	120	PERL_SI *curstackinfo;
40	AV *curstack;	121	AV *curstack;
41	AV *mainstack;	122	AV *mainstack;
42	SV **stack_sp;	123	SV **stack_sp;
43	OP *op;	124	OP *op;
44	SV **curpad;	125	SV **curpad;
		126	AV *comppad;
		127	CV *compcv;
45	SV **stack_base;	128	SV **stack_base;
46	SV **stack_max;	129	SV **stack_max;
47	SV **tmps_stack;	130	SV **tmps_stack;
48	I32 tmps_floor;	131	I32 tmps_floor;
49	I32 tmps_ix;	132	I32 tmps_ix;
58	I32 savestack_ix;	141	I32 savestack_ix;
59	I32 savestack_max;	142	I32 savestack_max;
60	OP **retstack;	143	OP **retstack;
61	I32 retstack_ix;	144	I32 retstack_ix;
62	I32 retstack_max;	145	I32 retstack_max;
		146	PMOP *curpm;
63	COP *curcop;	147	COP *curcop;
64	JMPENV start_env;
65	JMPENV *top_env;	148	JMPENV *top_env;
66		149
67	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
68	AV *args;	151	AV *args;
69	};	152	};
70		153
71	typedef struct coro *Coro__State;	154	typedef struct coro *Coro__State;
72	typedef struct coro *Coro__State_or_hashref;	155	typedef struct coro *Coro__State_or_hashref;
73		156
74	static AV main_mainstack; / used to differentiate between $main and others */	157	static AV *
75	static HV *coro_state_stash;	158	coro_clone_padlist (pTHX_ CV *cv)
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 */
81	STATIC AV *
82	clone_padlist (AV *protopadlist)
83	{	159	{
84	AV *av;	160	AV *padlist = CvPADLIST (cv);
85	I32 ix;
86	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
87	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
88	SV **pname = AvARRAY (protopad_name);
89	SV **ppad = AvARRAY (protopad);
90	I32 fname = AvFILLp (protopad_name);
91	I32 fpad = AvFILLp (protopad);
92	AV newpadlist, newpad_name, *newpad;	161	AV newpadlist, newpad;
93	SV **npad;
94
95	newpad_name = newAV ();
96	for (ix = fname; ix >= 0; ix--)
97	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
98
99	newpad = newAV ();
100	av_fill (newpad, AvFILLp (protopad));
101	npad = AvARRAY (newpad);
102		162
103	newpadlist = newAV ();	163	newpadlist = newAV ();
104	AvREAL_off (newpadlist);	164	AvREAL_off (newpadlist);
105	av_store (newpadlist, 0, (SV *) newpad_name);	165	#if PERL_VERSION < 9
		166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		167	#else
		168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		169	#endif
		170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		171	--AvFILLp (padlist);
		172
		173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
106	av_store (newpadlist, 1, (SV *) newpad);	174	av_store (newpadlist, 1, (SV *)newpad);
107		175
108	av = newAV (); /* will be @_ */	176	return newpadlist;
109	av_extend (av, 0);	177	}
110	av_store (newpad, 0, (SV *) av);
111	AvFLAGS (av) = AVf_REIFY;
112		178
113	for (ix = fpad; ix > 0; ix--)	179	static void
		180	free_padlist (pTHX_ AV *padlist)
		181	{
		182	/* may be during global destruction */
		183	if (SvREFCNT (padlist))
114	{	184	{
115	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	185	I32 i = AvFILLp (padlist);
116	if (namesv && namesv != &PL_sv_undef)	186	while (i >= 0)
117	{	187	{
118	char name = SvPVX (namesv); / XXX */	188	SV **svp = av_fetch (padlist, i--, FALSE);
119	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	189	if (svp)
120	{ /* lexical from outside? */
121	npad[ix] = SvREFCNT_inc (ppad[ix]);
122	}	190	{
123	else
124	{ /* our own lexical */
125	SV *sv;	191	SV *sv;
126	if (*name == '&')	192	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
127	sv = SvREFCNT_inc (ppad[ix]);	193	SvREFCNT_dec (sv);
128	else if (*name == '@')	194
129	sv = (SV *) newAV ();	195	SvREFCNT_dec (*svp);
130	else if (*name == '%')
131	sv = (SV *) newHV ();
132	else
133	sv = NEWSV (0, 0);
134	if (!SvPADBUSY (sv))
135	SvPADMY_on (sv);
136	npad[ix] = sv;
137	}	196	}
138	}	197	}
139	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	198
140	{	199	SvREFCNT_dec ((SV*)padlist);
141	npad[ix] = SvREFCNT_inc (ppad[ix]);
142	}
143	else
144	{
145	SV *sv = NEWSV (0, 0);
146	SvPADTMP_on (sv);
147	npad[ix] = sv;
148	}
149	}	200	}
		201	}
150		202
151	#if 0 /* return -ENOTUNDERSTOOD */	203	static int
152	/* Now that vars are all in place, clone nested closures. */	204	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		205	{
		206	AV *padlist;
		207	AV av = (AV )mg->mg_obj;
153		208
154	for (ix = fpad; ix > 0; ix--) {	209	/* casting is fun. */
155	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
156	if (namesv	211	free_padlist (aTHX_ padlist);
157	&& namesv != &PL_sv_undef	212
158	&& !(SvFLAGS(namesv) & SVf_FAKE)	213	SvREFCNT_dec (av);
159	&& *SvPVX(namesv) == '&'	214
160	&& CvCLONE(ppad[ix]))	215	return 0;
161	{	216	}
162	CV kid = cv_clone((CV)ppad[ix]);	217
163	SvREFCNT_dec(ppad[ix]);	218	#define PERL_MAGIC_coro PERL_MAGIC_ext
164	CvCLONE_on(kid);	219
165	SvPADMY_on(kid);	220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
166	npad[ix] = (SV*)kid;	221
167	}	222	/* the next two functions merely cache the padlists */
		223	static void
		224	get_padlist (pTHX_ CV *cv)
		225	{
		226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		227
		228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
		229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
		230	else
		231	{
		232	#if 0
		233	/* this should work - but it doesn't :( */
		234	CV *cp = Perl_cv_clone (aTHX_ cv);
		235	CvPADLIST (cv) = CvPADLIST (cp);
		236	CvPADLIST (cp) = 0;
		237	SvREFCNT_dec (cp);
		238	#else
		239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		240	#endif
		241	}
		242	}
		243
		244	static void
		245	put_padlist (pTHX_ CV *cv)
		246	{
		247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		248
		249	if (!mg)
		250	{
		251	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		252	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		253	mg->mg_virtual = &vtbl_coro;
		254	mg->mg_obj = (SV *)newAV ();
168	}	255	}
169	#endif
170		256
171	return newpadlist;
172	}
173
174	#ifdef MAY_FLUSH
175	STATIC AV *
176	free_padlist (AV *padlist)
177	{
178	/* may be during global destruction */
179	if (SvREFCNT(padlist))
180	{
181	I32 i = AvFILLp(padlist);
182	while (i >= 0)
183	{
184	SV **svp = av_fetch(padlist, i--, FALSE);
185	SV sv = svp ? svp : Nullsv;
186	if (sv)
187	SvREFCNT_dec(sv);
188	}
189
190	SvREFCNT_dec((SV*)padlist);
191	}
192	}
193	#endif
194
195	/* the next two functions merely cache the padlists */
196	STATIC void
197	get_padlist (CV *cv)
198	{
199	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
200
201	if (he && AvFILLp ((AV )he) >= 0)
202	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
203	else
204	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
205	}
206
207	STATIC void
208	put_padlist (CV *cv)
209	{
210	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
211
212	if (SvTYPE (*he) != SVt_PVAV)
213	{
214	SvREFCNT_dec (*he);
215	he = (SV )newAV ();
216	}
217
218	av_push ((AV )he, (SV *)CvPADLIST (cv));	257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
219	}	258	}
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		259
247	#define SB do {	260	#define SB do {
248	#define SE } while (0)	261	#define SE } while (0)
249		262
250	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	263	#define LOAD(state) load_state(aTHX_ (state));
251	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
252		265
253	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	266	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
254		267
255	static void	268	static void
256	load_state(pTHX_ Coro__State c)	269	load_state(pTHX_ Coro__State c)
257	{	270	{
258	PL_dowarn = c->dowarn;	271	PL_dowarn = c->dowarn;
		272	PL_in_eval = c->in_eval;
259		273
260	PL_curstackinfo = c->curstackinfo;	274	PL_curstackinfo = c->curstackinfo;
261	PL_curstack = c->curstack;	275	PL_curstack = c->curstack;
262	PL_mainstack = c->mainstack;	276	PL_mainstack = c->mainstack;
263	PL_stack_sp = c->stack_sp;	277	PL_stack_sp = c->stack_sp;
264	PL_op = c->op;	278	PL_op = c->op;
265	PL_curpad = c->curpad;	279	PL_curpad = c->curpad;
		280	PL_comppad = c->comppad;
		281	PL_compcv = c->compcv;
266	PL_stack_base = c->stack_base;	282	PL_stack_base = c->stack_base;
267	PL_stack_max = c->stack_max;	283	PL_stack_max = c->stack_max;
268	PL_tmps_stack = c->tmps_stack;	284	PL_tmps_stack = c->tmps_stack;
269	PL_tmps_floor = c->tmps_floor;	285	PL_tmps_floor = c->tmps_floor;
270	PL_tmps_ix = c->tmps_ix;	286	PL_tmps_ix = c->tmps_ix;
…		…
276	PL_scopestack_ix = c->scopestack_ix;	292	PL_scopestack_ix = c->scopestack_ix;
277	PL_scopestack_max = c->scopestack_max;	293	PL_scopestack_max = c->scopestack_max;
278	PL_savestack = c->savestack;	294	PL_savestack = c->savestack;
279	PL_savestack_ix = c->savestack_ix;	295	PL_savestack_ix = c->savestack_ix;
280	PL_savestack_max = c->savestack_max;	296	PL_savestack_max = c->savestack_max;
		297	#if PERL_VERSION < 9
281	PL_retstack = c->retstack;	298	PL_retstack = c->retstack;
282	PL_retstack_ix = c->retstack_ix;	299	PL_retstack_ix = c->retstack_ix;
283	PL_retstack_max = c->retstack_max;	300	PL_retstack_max = c->retstack_max;
		301	#endif
		302	PL_curpm = c->curpm;
284	PL_curcop = c->curcop;	303	PL_curcop = c->curcop;
285	PL_start_env = c->start_env;
286	PL_top_env = c->top_env;	304	PL_top_env = c->top_env;
287		305
288	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
289	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
290	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
298	{	316	{
299	AV padlist = (AV )POPs;	317	AV padlist = (AV )POPs;
300		318
301	if (padlist)	319	if (padlist)
302	{	320	{
303	put_padlist (cv); /* mark this padlist as available */	321	put_padlist (aTHX_ cv); /* mark this padlist as available */
304	CvPADLIST(cv) = padlist;	322	CvPADLIST(cv) = padlist;
305	#ifdef USE_THREADS
306	/CvOWNER(cv) = (struct perl_thread )POPs;*/
307	#endif
308	}	323	}
309		324
310	++CvDEPTH(cv);	325	++CvDEPTH(cv);
311	}	326	}
312		327
…		…
330		345
331	PUSHs (Nullsv);	346	PUSHs (Nullsv);
332	/* this loop was inspired by pp_caller */	347	/* this loop was inspired by pp_caller */
333	for (;;)	348	for (;;)
334	{	349	{
335	do	350	while (cxix >= 0)
336	{	351	{
337	PERL_CONTEXT *cx = &ccstk[cxix--];	352	PERL_CONTEXT *cx = &ccstk[cxix--];
338		353
339	if (CxTYPE(cx) == CXt_SUB)	354	if (CxTYPE(cx) == CXt_SUB)
340	{	355	{
341	CV *cv = cx->blk_sub.cv;	356	CV *cv = cx->blk_sub.cv;
342	if (CvDEPTH(cv))	357	if (CvDEPTH(cv))
343	{	358	{
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);	359	EXTEND (SP, CvDEPTH(cv)*2);
350		360
351	while (--CvDEPTH(cv))	361	while (--CvDEPTH(cv))
352	{	362	{
353	/* this tells the restore code to increment CvDEPTH */	363	/* this tells the restore code to increment CvDEPTH */
…		…
356	}	366	}
357		367
358	PUSHs ((SV *)CvPADLIST(cv));	368	PUSHs ((SV *)CvPADLIST(cv));
359	PUSHs ((SV *)cv);	369	PUSHs ((SV *)cv);
360		370
361	get_padlist (cv); /* this is a monster */	371	get_padlist (aTHX_ cv);
362	}	372	}
363	}	373	}
		374	#ifdef CXt_FORMAT
364	else if (CxTYPE(cx) == CXt_FORMAT)	375	else if (CxTYPE(cx) == CXt_FORMAT)
365	{	376	{
366	/* I never used formats, so how should I know how these are implemented? */	377	/* I never used formats, so how should I know how these are implemented? */
367	/* my bold guess is as a simple, plain sub... */	378	/* my bold guess is as a simple, plain sub... */
368	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
369	}	380	}
		381	#endif
370	}	382	}
371	while (cxix >= 0);
372		383
373	if (top_si->si_type == PERLSI_MAIN)	384	if (top_si->si_type == PERLSI_MAIN)
374	break;	385	break;
375		386
376	top_si = top_si->si_prev;	387	top_si = top_si->si_prev;
…		…
383		394
384	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
385	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
386	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
387		398
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;	399	c->dowarn = PL_dowarn;
		400	c->in_eval = PL_in_eval;
394		401
395	c->curstackinfo = PL_curstackinfo;	402	c->curstackinfo = PL_curstackinfo;
396	c->curstack = PL_curstack;	403	c->curstack = PL_curstack;
397	c->mainstack = PL_mainstack;	404	c->mainstack = PL_mainstack;
398	c->stack_sp = PL_stack_sp;	405	c->stack_sp = PL_stack_sp;
399	c->op = PL_op;	406	c->op = PL_op;
400	c->curpad = PL_curpad;	407	c->curpad = PL_curpad;
		408	c->comppad = PL_comppad;
		409	c->compcv = PL_compcv;
401	c->stack_base = PL_stack_base;	410	c->stack_base = PL_stack_base;
402	c->stack_max = PL_stack_max;	411	c->stack_max = PL_stack_max;
403	c->tmps_stack = PL_tmps_stack;	412	c->tmps_stack = PL_tmps_stack;
404	c->tmps_floor = PL_tmps_floor;	413	c->tmps_floor = PL_tmps_floor;
405	c->tmps_ix = PL_tmps_ix;	414	c->tmps_ix = PL_tmps_ix;
…		…
411	c->scopestack_ix = PL_scopestack_ix;	420	c->scopestack_ix = PL_scopestack_ix;
412	c->scopestack_max = PL_scopestack_max;	421	c->scopestack_max = PL_scopestack_max;
413	c->savestack = PL_savestack;	422	c->savestack = PL_savestack;
414	c->savestack_ix = PL_savestack_ix;	423	c->savestack_ix = PL_savestack_ix;
415	c->savestack_max = PL_savestack_max;	424	c->savestack_max = PL_savestack_max;
		425	#if PERL_VERSION < 9
416	c->retstack = PL_retstack;	426	c->retstack = PL_retstack;
417	c->retstack_ix = PL_retstack_ix;	427	c->retstack_ix = PL_retstack_ix;
418	c->retstack_max = PL_retstack_max;	428	c->retstack_max = PL_retstack_max;
		429	#endif
		430	c->curpm = PL_curpm;
419	c->curcop = PL_curcop;	431	c->curcop = PL_curcop;
420	c->start_env = PL_start_env;
421	c->top_env = PL_top_env;	432	c->top_env = PL_top_env;
422	}	433	}
423		434
424	/*	435	/*
425	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
426	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
427	* on the assumption that coroutines do not usually need	438	* on the (sometimes correct) assumption that coroutines do
428	* a lot of stackspace.	439	* not usually need a lot of stackspace.
429	*/	440	*/
430	STATIC void	441	static void
431	coro_init_stacks (pTHX)	442	coro_init_stacks (pTHX)
432	{	443	{
		444	LOCK;
		445
433	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
434	PL_curstackinfo->si_type = PERLSI_MAIN;	447	PL_curstackinfo->si_type = PERLSI_MAIN;
435	PL_curstack = PL_curstackinfo->si_stack;	448	PL_curstack = PL_curstackinfo->si_stack;
436	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
437		450
438	PL_stack_base = AvARRAY(PL_curstack);	451	PL_stack_base = AvARRAY(PL_curstack);
439	PL_stack_sp = PL_stack_base;	452	PL_stack_sp = PL_stack_base;
440	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	453	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
441		454
442	New(50,PL_tmps_stack,64,SV*);	455	New(50,PL_tmps_stack,96,SV*);
443	PL_tmps_floor = -1;	456	PL_tmps_floor = -1;
444	PL_tmps_ix = -1;	457	PL_tmps_ix = -1;
445	PL_tmps_max = 64;	458	PL_tmps_max = 96;
446		459
447	New(54,PL_markstack,12,I32);	460	New(54,PL_markstack,16,I32);
448	PL_markstack_ptr = PL_markstack;	461	PL_markstack_ptr = PL_markstack;
449	PL_markstack_max = PL_markstack + 12;	462	PL_markstack_max = PL_markstack + 16;
450		463
		464	#ifdef SET_MARK_OFFSET
451	SET_MARK_OFFSET;	465	SET_MARK_OFFSET;
		466	#endif
452		467
453	New(54,PL_scopestack,12,I32);	468	New(54,PL_scopestack,16,I32);
454	PL_scopestack_ix = 0;	469	PL_scopestack_ix = 0;
455	PL_scopestack_max = 12;	470	PL_scopestack_max = 16;
456		471
457	New(54,PL_savestack,64,ANY);	472	New(54,PL_savestack,96,ANY);
458	PL_savestack_ix = 0;	473	PL_savestack_ix = 0;
459	PL_savestack_max = 64;	474	PL_savestack_max = 96;
460		475
		476	#if PERL_VERSION < 9
461	New(54,PL_retstack,8,OP*);	477	New(54,PL_retstack,8,OP*);
462	PL_retstack_ix = 0;	478	PL_retstack_ix = 0;
463	PL_retstack_max = 8;	479	PL_retstack_max = 8;
		480	#endif
		481
		482	UNLOCK;
464	}	483	}
465		484
466	/*	485	/*
467	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
468	* still there is a memleak of 128 bytes...
469	*/	487	*/
470	STATIC void	488	static void
471	destroy_stacks(pTHX)	489	destroy_stacks(pTHX)
472	{	490	{
		491	if (!IN_DESTRUCT)
		492	{
473	/* is this ugly, I ask? */	493	/* is this ugly, I ask? */
474	while (PL_scopestack_ix)	494	LEAVE_SCOPE (0);
475	LEAVE;
476		495
477	/* sure it is, but more important: is it correct?? :/ */	496	/* 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;	497	FREETMPS;
		498
		499	/POPSTACK_TO (PL_mainstack);//D//use/
		500	}
480		501
481	while (PL_curstackinfo->si_next)	502	while (PL_curstackinfo->si_next)
482	PL_curstackinfo = PL_curstackinfo->si_next;	503	PL_curstackinfo = PL_curstackinfo->si_next;
483		504
484	while (PL_curstackinfo)	505	while (PL_curstackinfo)
485	{	506	{
486	PERL_SI *p = PL_curstackinfo->si_prev;	507	PERL_SI *p = PL_curstackinfo->si_prev;
487		508
488	{	509	{ /D//remove/
489	dSP;	510	dSP;
490	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
491	PUTBACK; /* possibly superfluous */	512	PUTBACK; /* possibly superfluous */
492	}	513	}
493		514
494	dounwind(-1);	515	if (!IN_DESTRUCT)
495		516	{
		517	dounwind (-1);/D//remove/
496	SvREFCNT_dec(PL_curstackinfo->si_stack);	518	SvREFCNT_dec (PL_curstackinfo->si_stack);
		519	}
		520
497	Safefree(PL_curstackinfo->si_cxstack);	521	Safefree (PL_curstackinfo->si_cxstack);
498	Safefree(PL_curstackinfo);	522	Safefree (PL_curstackinfo);
499	PL_curstackinfo = p;	523	PL_curstackinfo = p;
500	}	524	}
501		525
502	Safefree(PL_tmps_stack);	526	Safefree (PL_tmps_stack);
503	Safefree(PL_markstack);	527	Safefree (PL_markstack);
504	Safefree(PL_scopestack);	528	Safefree (PL_scopestack);
505	Safefree(PL_savestack);	529	Safefree (PL_savestack);
		530	#if PERL_VERSION < 9
506	Safefree(PL_retstack);	531	Safefree (PL_retstack);
		532	#endif
507	}	533	}
508		534
509	static void	535	static void
510	allocate_stack (Coro__State ctx)	536	allocate_stack (Coro__State ctx, int alloc)
511	{	537	{
512	#ifdef HAVE_MMAP	538	coro_stack *stack;
513	ctx->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */	539
514	ctx->sptr = mmap (0, ctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	540	New (0, stack, 1, coro_stack);
515	if (ctx->sptr == (void *)-1)	541
516	#endif	542	stack->refcnt = 1;
		543	stack->usecnt = 1;
		544	stack->gencnt = ctx->gencnt = 0;
		545
		546	if (alloc)
517	{	547	{
518	/FIXME//D//* reasonable stack size! */	548	#if HAVE_MMAP
519	ctx->ssize = 4096 * sizeof (long);	549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
520	New (0, ctx->sptr, 4096, long);	550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		551	if (stack->sptr != (void *)-1)
		552	{
		553	# if STACKGUARD
		554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		555	# endif
		556	}
		557	else
		558	#endif
		559	{
		560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
		561	New (0, stack->sptr, STACKSIZE, long);
		562	}
521	}	563	}
		564	else
		565	stack->sptr = 0;
		566
		567	ctx->stack = stack;
522	}	568	}
523		569
524	static void	570	static void
525	deallocate_stack (Coro__State ctx)	571	deallocate_stack (Coro__State ctx)
526	{	572	{
		573	coro_stack *stack = ctx->stack;
		574
		575	ctx->stack = 0;
		576
		577	if (stack)
		578	{
		579	if (!--stack->refcnt)
		580	{
527	#ifdef HAVE_MMAP	581	#ifdef HAVE_MMAP
528	munmap (ctx->sptr, ctx->ssize);	582	if (stack->ssize > 0 && stack->sptr)
529	#else	583	munmap (stack->sptr, stack->ssize);
530	Safefree (ctx->sptr);	584	else
531	#endif	585	#endif
532	}	586	Safefree (stack->sptr);
533		587
534	/* might go away together with optional SAVE_CCTXT */	588	Safefree (stack);
		589	}
		590	else if (ctx->gencnt == stack->gencnt)
		591	--stack->usecnt;
		592	}
		593	}
		594
535	static void	595	static void
536	setup_coro (void *arg)	596	setup_coro (void *arg)
537	{	597	{
538	/*	598	/*
539	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
540	*/	600	*/
		601	dTHX;
541	dSP;	602	dSP;
542	Coro__State ctx = (Coro__State)arg;	603	Coro__State ctx = (Coro__State)arg;
543	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
544		605
545	coro_init_stacks (aTHX);	606	coro_init_stacks (aTHX);
546	JMPENV_BOOTSTRAP;	607	/PL_curcop = 0;/
		608	/PL_in_eval = PL_in_eval;/ /* inherit */
		609	SvREFCNT_dec (GvAV (PL_defgv));
		610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		611
547	SPAGAIN;	612	SPAGAIN;
548		613
549	/PL_curcop = 0;/
550	SvREFCNT_dec (GvAV (PL_defgv));
551	GvAV (PL_defgv) = ctx->args;
552
553	if (ctx->sptr)	614	if (ctx->stack)
554	{	615	{
		616	ctx->cursp = 0;
		617
555	PUSHMARK(SP);	618	PUSHMARK(SP);
556	PUTBACK;	619	PUTBACK;
557	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	620	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		621
		622	if (SvTRUE (ERRSV))
		623	croak (NULL);
		624	else
558	croak ("FATAL: CCTXT coroutine returned!");	625	croak ("FATAL: CCTXT coroutine returned!");
559	}	626	}
560	else	627	else
561	{	628	{
562	UNOP myop;	629	UNOP myop;
563		630
564	PL_op = (OP *)&myop;
565
566	Zero(&myop, 1, UNOP);	631	Zero(&myop, 1, UNOP);
567	myop.op_next = Nullop;	632	myop.op_next = Nullop;
568	myop.op_flags = OPf_WANT_VOID;	633	myop.op_flags = OPf_WANT_VOID;
		634
		635	PL_op = (OP *)&myop;
569		636
570	PUSHMARK(SP);	637	PUSHMARK(SP);
571	XPUSHs (sub_init);	638	XPUSHs (sub_init);
572	/*	639	/*
573	* the next line is slightly wrong, as PL_op->op_next	640	* the next line is slightly wrong, as PL_op->op_next
…		…
575	* that doesn't matter, though, since it is only	642	* that doesn't matter, though, since it is only
576	* pp_nextstate and we never return...	643	* pp_nextstate and we never return...
577	* ah yes, and I don't care anyways ;)	644	* ah yes, and I don't care anyways ;)
578	*/	645	*/
579	PUTBACK;	646	PUTBACK;
580	PL_op = pp_entersub();	647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
581	SPAGAIN;	648	SPAGAIN;
582		649
583	ENTER; /* necessary e.g. for dounwind */	650	ENTER; /* necessary e.g. for dounwind */
584	}	651	}
585	}	652	}
586		653
587	STATIC void	654	static void
		655	continue_coro (void *arg)
		656	{
		657	/*
		658	* this is a _very_ stripped down perl interpreter ;)
		659	*/
		660	dTHX;
		661	Coro__State ctx = (Coro__State)arg;
		662
		663	PL_top_env = &PL_start_env;
		664
		665	ctx->cursp = 0;
		666	PL_op = PL_op->op_next;
		667	CALLRUNOPS(aTHX);
		668
		669	abort ();
		670	}
		671
		672	static void
588	transfer(pTHX_ struct coro prev, struct coro next, int flags)	673	transfer (pTHX_ struct coro prev, struct coro next, int flags)
589	{	674	{
590	dSP;	675	dSTACKLEVEL;
591		676
592	if (prev != next)	677	if (prev != next)
593	{	678	{
594	/*	679	/* has this coro been created yet? */
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)	680	if (next->mainstack)
601	{	681	{
		682	LOCK;
602	SAVE (prev, flags);	683	SAVE (prev, flags);
603	LOAD (next);	684	LOAD (next);
		685	UNLOCK;
604		686
605	/* mark this state as in-use */	687	/* mark this state as in-use */
606	next->mainstack = 0;	688	next->mainstack = 0;
607	next->tmps_ix = -2;	689	next->tmps_ix = -2;
608		690
		691	/* stacklevel changed? if yes, grab the stack for us! */
609	if (flags & TRANSFER_SAVE_CCTXT)	692	if (flags & TRANSFER_SAVE_CCTXT)
610	{	693	{
611	if (!next->ssize)
612	croak ("destination coroutine has no CCTXT (%p, %d)", next->sptr, next->ssize);
613
614	if (!prev->ssize)	694	if (!prev->stack)
615	prev->ssize = 1; /* mark cctx as valid ;) */	695	allocate_stack (prev, 0);
		696	else if (prev->cursp != stacklevel
		697	&& prev->stack->usecnt > 1)
		698	{
		699	prev->gencnt = ++prev->stack->gencnt;
		700	prev->stack->usecnt = 1;
		701	}
616		702
		703	/* has our stack been invalidated? */
		704	if (next->stack && next->stack->gencnt != next->gencnt)
		705	{
		706	deallocate_stack (next);
		707	allocate_stack (next, 1);
		708	coro_create (&(next->stack->cctx),
		709	continue_coro, (void *)next,
		710	next->stack->sptr, labs (next->stack->ssize));
		711	}
		712
617	coro_transfer (&(prev->cctx), &(next->cctx));	713	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		714	prev->cursp = stacklevel;
		715	/* don't add any code here */
618	}	716	}
619		717	else
		718	next->cursp = stacklevel;
620	}	719	}
621	else if (next->tmps_ix == -2)	720	else if (next->tmps_ix == -2)
622	croak ("tried to transfer to running coroutine");	721	croak ("tried to transfer to running coroutine");
623	else	722	else
624	{	723	{
		724	LOCK;
625	SAVE (prev, -1); /* first get rid of the old state */	725	SAVE (prev, -1); /* first get rid of the old state */
		726	UNLOCK;
626		727
		728	/* create the coroutine for the first time */
627	if (flags & TRANSFER_SAVE_CCTXT)	729	if (flags & TRANSFER_SAVE_CCTXT)
628	{	730	{
629	if (!next->ssize)	731	if (!prev->stack)
		732	allocate_stack (prev, 0);
		733
		734	/* the new coroutine starts with start_env again */
		735	PL_top_env = &PL_start_env;
		736
		737	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
630	{	738	{
		739	setup_coro (next);
		740	next->cursp = stacklevel;
		741
		742	prev->stack->refcnt++;
		743	prev->stack->usecnt++;
		744	next->stack = prev->stack;
		745	next->gencnt = prev->gencnt;
		746	}
		747	else
		748	{
		749	assert (!next->stack);
631	allocate_stack (next);	750	allocate_stack (next, 1);
632	coro_create (&(next->cctx),	751	coro_create (&(next->stack->cctx),
633	setup_coro, (void *)next,	752	setup_coro, (void *)next,
634	next->sptr, next->ssize);	753	next->stack->sptr, labs (next->stack->ssize));
		754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		755	prev->cursp = stacklevel;
		756	/* don't add any code here */
635	}	757	}
636
637	if (!prev->ssize)
638	prev->ssize = 1; /* mark cctx as valid ;) */
639
640	coro_transfer (&(prev->cctx), &(next->cctx));
641	}	758	}
642	else	759	else
		760	{
643	setup_coro (next);	761	setup_coro (next);
		762	next->cursp = stacklevel;
		763	}
644	}	764	}
645	}	765	}
		766
		767	LOCK;
		768	if (coro_mortal)
		769	{
		770	SvREFCNT_dec (coro_mortal);
		771	coro_mortal = 0;
		772	}
		773	UNLOCK;
		774	}
		775
		776	#define SV_CORO(sv,func) \
		777	do { \
		778	if (SvROK (sv)) \
		779	sv = SvRV (sv); \
		780	\
		781	if (SvTYPE (sv) == SVt_PVHV) \
		782	{ \
		783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		784	\
		785	if (!he) \
		786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		787	\
		788	(sv) = SvRV (HeVAL(he)); \
		789	} \
		790	\
		791	/* must also be changed inside Coro::Cont::yield */ \
		792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		794	\
		795	} while(0)
		796
		797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))
		798
		799	static void
		800	api_transfer(pTHX_ SV prev, SV next, int flags)
		801	{
		802	SV_CORO (prev, "Coro::transfer");
		803	SV_CORO (next, "Coro::transfer");
		804
		805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		806	}
		807
		808	/ Coro ******************************************************************/
		809
		810	#define PRIO_MAX 3
		811	#define PRIO_HIGH 1
		812	#define PRIO_NORMAL 0
		813	#define PRIO_LOW -1
		814	#define PRIO_IDLE -3
		815	#define PRIO_MIN -4
		816
		817	/* for Coro.pm */
		818	static GV coro_current, coro_idle;
		819	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		820	static int coro_nready;
		821
		822	static void
		823	coro_enq (pTHX_ SV *sv)
		824	{
		825	SV **xprio;
		826	int prio;
		827
		828	if (SvTYPE (sv) != SVt_PVHV)
		829	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		830
		831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
		832	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		833
		834	prio = prio > PRIO_MAX ? PRIO_MAX
		835	: prio < PRIO_MIN ? PRIO_MIN
		836	: prio;
		837
		838	av_push (coro_ready [prio - PRIO_MIN], sv);
		839	coro_nready++;
		840	}
		841
		842	static SV *
		843	coro_deq (pTHX_ int min_prio)
		844	{
		845	int prio = PRIO_MAX - PRIO_MIN;
		846
		847	min_prio -= PRIO_MIN;
		848	if (min_prio < 0)
		849	min_prio = 0;
		850
		851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		852	if (AvFILLp (coro_ready [prio]) >= 0)
		853	{
		854	coro_nready--;
		855	return av_shift (coro_ready [prio]);
		856	}
		857
		858	return 0;
		859	}
		860
		861	static void
		862	api_ready (SV *coro)
		863	{
		864	dTHX;
		865
		866	if (SvROK (coro))
		867	coro = SvRV (coro);
		868
		869	LOCK;
		870	coro_enq (aTHX_ SvREFCNT_inc (coro));
		871	UNLOCK;
		872	}
		873
		874	static void
		875	api_schedule (void)
		876	{
		877	dTHX;
		878
		879	SV prev, next;
		880
		881	LOCK;
		882
		883	prev = SvRV (GvSV (coro_current));
		884	next = coro_deq (aTHX_ PRIO_MIN);
		885
		886	if (!next)
		887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		888
		889	/* free this only after the transfer */
		890	coro_mortal = prev;
		891	SV_CORO (prev, "Coro::schedule");
		892
		893	SvRV (GvSV (coro_current)) = next;
		894
		895	SV_CORO (next, "Coro::schedule");
		896
		897	UNLOCK;
		898
		899	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		901	}
		902
		903	static void
		904	api_cede (void)
		905	{
		906	dTHX;
		907
		908	LOCK;
		909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		910	UNLOCK;
		911
		912	api_schedule ();
646	}	913	}
647		914
648	MODULE = Coro::State PACKAGE = Coro::State	915	MODULE = Coro::State PACKAGE = Coro::State
649		916
650	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
651		918
652	BOOT:	919	BOOT:
653	{ /* {} necessary for stoopid perl-5.6.x */	920	{ /* {} necessary for stoopid perl-5.6.x */
		921	#ifdef USE_ITHREADS
		922	MUTEX_INIT (&coro_mutex);
		923	#endif
		924	BOOT_PAGESIZE;
		925
654	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
655	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
656	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
657		929
658	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
659	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
660	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
661	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
662		934
663	if (!padlist_cache)
664	padlist_cache = newHV ();
665
666	main_mainstack = PL_mainstack;	935	main_mainstack = PL_mainstack;
		936
		937	coroapi.ver = CORO_API_VERSION;
		938	coroapi.transfer = api_transfer;
667	}	939	}
668		940
669	Coro::State	941	Coro::State
670	_newprocess(args)	942	_newprocess(args)
671	SV * args	943	SV * args
…		…
674	Coro__State coro;	946	Coro__State coro;
675		947
676	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
677	croak ("Coro::State::_newprocess expects an arrayref");	949	croak ("Coro::State::_newprocess expects an arrayref");
678		950
679	New (0, coro, 1, struct coro);	951	Newz (0, coro, 1, struct coro);
680		952
681	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
682	coro->mainstack = 0; /* actual work is done inside transfer */	954	/coro->mainstack = 0; //actual work is done inside transfer /
683	coro->sptr = 0;	955	/coro->stack = 0;/
684	coro->ssize = 0;
685		956
686	RETVAL = coro;	957	RETVAL = coro;
687	OUTPUT:	958	OUTPUT:
688	RETVAL	959	RETVAL
689		960
690	void	961	void
691	transfer(prev, next, flags = TRANSFER_SAVE_ALL)	962	transfer(prev, next, flags)
692	Coro::State_or_hashref prev	963	SV *prev
693	Coro::State_or_hashref next	964	SV *next
694	int flags	965	int flags
695	PROTOTYPE: @	966	PROTOTYPE: @
696	CODE:	967	CODE:
		968	PUTBACK;
		969	SV_CORO (next, "Coro::transfer");
		970	SV_CORO (prev, "Coro::transfer");
697	transfer (aTHX_ prev, next, flags);	971	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		972	SPAGAIN;
698		973
699	void	974	void
700	DESTROY(coro)	975	DESTROY(coro)
701	Coro::State coro	976	Coro::State coro
702	CODE:	977	CODE:
703		978
704	if (coro->mainstack && coro->mainstack != main_mainstack)	979	if (coro->mainstack && coro->mainstack != main_mainstack)
705	{	980	{
706	struct coro temp;	981	struct coro temp;
707		982
		983	PUTBACK;
708	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	984	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
709	LOAD(aTHX_ coro);	985	LOAD (aTHX_ coro);
		986	SPAGAIN;
710		987
711	destroy_stacks (aTHX);	988	destroy_stacks (aTHX);
712		989
713	LOAD((&temp)); /* this will get rid of defsv etc.. */	990	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		991	SPAGAIN;
714		992
715	coro->mainstack = 0;	993	coro->mainstack = 0;
716	}	994	}
717		995
718	if (coro->sptr)
719	{
720	deallocate_stack (coro);	996	deallocate_stack (coro);
721	coro->sptr = 0;	997	SvREFCNT_dec (coro->args);
722	}
723
724	Safefree (coro);	998	Safefree (coro);
725		999
726	void	1000	void
727	flush()	1001	_exit(code)
		1002	int code
		1003	PROTOTYPE: $
728	CODE:	1004	CODE:
729	#ifdef MAY_FLUSH	1005	_exit (code);
730	flush_padlist_cache ();
731	#endif
732		1006
733	MODULE = Coro::State PACKAGE = Coro::Cont	1007	MODULE = Coro::State PACKAGE = Coro::Cont
734
735	# this is slightly dirty
736		1008
737	void	1009	void
738	yield(...)	1010	yield(...)
739	PROTOTYPE: @	1011	PROTOTYPE: @
740	CODE:	1012	CODE:
741	static SV *returnstk;	1013	SV *yieldstack;
742	SV *sv;	1014	SV *sv;
743	AV *defav = GvAV (PL_defgv);	1015	AV *defav = GvAV (PL_defgv);
744	struct coro prev, next;	1016	struct coro prev, next;
745		1017
746	if (!returnstk)	1018	yieldstack = *hv_fetch (
747	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1019	(HV *)SvRV (GvSV (coro_current)),
		1020	"yieldstack", sizeof ("yieldstack") - 1,
		1021	0
		1022	);
748		1023
749	/* set up @_ -- ugly */	1024	/* set up @_ -- ugly */
750	av_clear (defav);	1025	av_clear (defav);
751	av_fill (defav, items - 1);	1026	av_fill (defav, items - 1);
752	while (items--)	1027	while (items--)
753	av_store (defav, items, SvREFCNT_inc (ST(items)));	1028	av_store (defav, items, SvREFCNT_inc (ST(items)));
754		1029
755	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
756	sv = av_pop ((AV *)SvRV (returnstk));	1030	sv = av_pop ((AV *)SvRV (yieldstack));
757	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1031	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
758	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1032	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
759	SvREFCNT_dec (sv);	1033	SvREFCNT_dec (sv);
760		1034
761	transfer(aTHX_ prev, next, 0);	1035	transfer (aTHX_ prev, next, 0);
762		1036
		1037	MODULE = Coro::State PACKAGE = Coro
		1038
		1039	BOOT:
		1040	{
		1041	int i;
		1042	HV *stash = gv_stashpv ("Coro", TRUE);
		1043
		1044	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1045	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1046	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1047	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1048	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1049	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1050
		1051	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1052	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1053
		1054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1055	coro_ready[i] = newAV ();
		1056
		1057	{
		1058	SV *sv = perl_get_sv("Coro::API", 1);
		1059
		1060	coroapi.schedule = api_schedule;
		1061	coroapi.cede = api_cede;
		1062	coroapi.ready = api_ready;
		1063	coroapi.nready = &coro_nready;
		1064	coroapi.current = coro_current;
		1065
		1066	GCoroAPI = &coroapi;
		1067	sv_setiv (sv, (IV)&coroapi);
		1068	SvREADONLY_on (sv);
		1069	}
		1070	}
		1071
		1072	#if !PERL_MICRO
		1073
		1074	void
		1075	ready(self)
		1076	SV * self
		1077	PROTOTYPE: $
		1078	CODE:
		1079	api_ready (self);
		1080
		1081	#endif
		1082
		1083	int
		1084	nready(...)
		1085	PROTOTYPE:
		1086	CODE:
		1087	RETVAL = coro_nready;
		1088	OUTPUT:
		1089	RETVAL
		1090
		1091	void
		1092	schedule(...)
		1093	PROTOTYPE:
		1094	CODE:
		1095	api_schedule ();
		1096
		1097	void
		1098	cede(...)
		1099	PROTOTYPE:
		1100	CODE:
		1101	api_cede ();
		1102
		1103	# and these are hacks
		1104	SV *
		1105	_aio_get_state ()
		1106	CODE:
		1107	{
		1108	struct {
		1109	int errorno;
		1110	int laststype;
		1111	int laststatval;
		1112	Stat_t statcache;
		1113	} data;
		1114
		1115	data.errorno = errno;
		1116	data.laststype = PL_laststype;
		1117	data.laststatval = PL_laststatval;
		1118	data.statcache = PL_statcache;
		1119
		1120	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1121	}
		1122	OUTPUT:
		1123	RETVAL
		1124
		1125	void
		1126	_aio_set_state (char *data_)
		1127	PROTOTYPE: $
		1128	CODE:
		1129	{
		1130	struct {
		1131	int errorno;
		1132	int laststype;
		1133	int laststatval;
		1134	Stat_t statcache;
		1135	} data = (void )data_;
		1136
		1137	errno = data->errorno;
		1138	PL_laststype = data->laststype;
		1139	PL_laststatval = data->laststatval;
		1140	PL_statcache = data->statcache;
		1141	}

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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 1.83 by root, Mon Nov 20 22:32:44 2006 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 1.83 by root, Mon Nov 20 22:32:44 2006 UTC