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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.31 by root, Sun Aug 26 16:36:08 2001 UTC vs.
Revision 1.80 by root, Thu Nov 2 20:00:00 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"
6		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
7	#include <signal.h>	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
8		41
9	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
10	# include <unistd.h>	43	# include <unistd.h>
11	# include <sys/mman.h>	44	# include <sys/mman.h>
12	# ifndef MAP_ANON
13	# ifdef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
14	# define MAP_ANON MAP_ANONYMOUS	46	# ifdef MAP_ANON
		47	# define MAP_ANONYMOUS MAP_ANON
15	# else	48	# else
16	# undef HAVE_MMAP	49	# undef HAVE_MMAP
17	# endif	50	# endif
18	# endif	51	# endif
		52	# include <limits.h>
		53	# ifndef PAGESIZE
		54	# define PAGESIZE pagesize
		55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		56	static long pagesize;
		57	# else
		58	# define BOOT_PAGESIZE
19	#endif	59	# endif
20		60	#endif
21	#define MAY_FLUSH /* increases codesize and is rarely used */
22		61
23	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
24	#define UCORO_STATE "_coro_state"	63	#define UCORO_STATE "_coro_state"
25		64
26	/* The next macro should declare a variable stacklevel that contains and approximation	65	/* The next macro should declare a variable stacklevel that contains and approximation
27	* to the current C stack pointer. Its property is that it changes with each call	66	* to the current C stack pointer. Its property is that it changes with each call
28	* and should be unique. */	67	* and should be unique. */
29	#define dSTACKLEVEL void *stacklevel = &stacklevel	68	#define dSTACKLEVEL void *stacklevel = &stacklevel
30		69
		70	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		71
31	#define labs(l) ((l) >= 0 ? (l) : -(l))	72	#define labs(l) ((l) >= 0 ? (l) : -(l))
32		73
33	#include "CoroAPI.h"	74	#include "CoroAPI.h"
34		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
35	static struct CoroAPI coroapi;	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 */
36		91
37	/* this is actually not only the c stack but also c registers etc... */	92	/* this is actually not only the c stack but also c registers etc... */
38	typedef struct {	93	typedef struct {
39	int refcnt; /* pointer reference counter */	94	int refcnt; /* pointer reference counter */
40	int usecnt; /* shared by how many coroutines */	95	int usecnt; /* shared by how many coroutines */
45	void *sptr;	100	void *sptr;
46	long ssize; /* positive == mmap, otherwise malloc */	101	long ssize; /* positive == mmap, otherwise malloc */
47	} coro_stack;	102	} coro_stack;
48		103
49	struct coro {	104	struct coro {
		105	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		106	JMPENV start_env;
		107
50	/* the optional C context */	108	/* the optional C context */
51	coro_stack *stack;	109	coro_stack *stack;
52	void *cursp;	110	void *cursp;
53	int gencnt;	111	int gencnt;
54		112
…		…
66	AV *curstack;	124	AV *curstack;
67	AV *mainstack;	125	AV *mainstack;
68	SV **stack_sp;	126	SV **stack_sp;
69	OP *op;	127	OP *op;
70	SV **curpad;	128	SV **curpad;
		129	AV *comppad;
		130	CV *compcv;
71	SV **stack_base;	131	SV **stack_base;
72	SV **stack_max;	132	SV **stack_max;
73	SV **tmps_stack;	133	SV **tmps_stack;
74	I32 tmps_floor;	134	I32 tmps_floor;
75	I32 tmps_ix;	135	I32 tmps_ix;
…		…
84	I32 savestack_ix;	144	I32 savestack_ix;
85	I32 savestack_max;	145	I32 savestack_max;
86	OP **retstack;	146	OP **retstack;
87	I32 retstack_ix;	147	I32 retstack_ix;
88	I32 retstack_max;	148	I32 retstack_max;
		149	PMOP *curpm;
89	COP *curcop;	150	COP *curcop;
90	JMPENV *top_env;	151	JMPENV *top_env;
91		152
92	/* data associated with this coroutine (initial args) */	153	/* data associated with this coroutine (initial args) */
93	AV *args;	154	AV *args;
94	};	155	};
95		156
96	typedef struct coro *Coro__State;	157	typedef struct coro *Coro__State;
97	typedef struct coro *Coro__State_or_hashref;	158	typedef struct coro *Coro__State_or_hashref;
98		159
99	static AV main_mainstack; / used to differentiate between $main and others */	160	static AV *
100	static HV *coro_state_stash;	161	coro_clone_padlist (pTHX_ CV *cv)
101	static SV *ucoro_state_sv;
102	static U32 ucoro_state_hash;
103	static HV *padlist_cache;
104
105	/* mostly copied from op.c:cv_clone2 */
106	STATIC AV *
107	clone_padlist (AV *protopadlist)
108	{	162	{
109	AV *av;	163	AV *padlist = CvPADLIST (cv);
110	I32 ix;
111	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
112	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
113	SV **pname = AvARRAY (protopad_name);
114	SV **ppad = AvARRAY (protopad);
115	I32 fname = AvFILLp (protopad_name);
116	I32 fpad = AvFILLp (protopad);
117	AV newpadlist, newpad_name, *newpad;	164	AV newpadlist, newpad;
118	SV **npad;
119
120	newpad_name = newAV ();
121	for (ix = fname; ix >= 0; ix--)
122	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
123
124	newpad = newAV ();
125	av_fill (newpad, AvFILLp (protopad));
126	npad = AvARRAY (newpad);
127		165
128	newpadlist = newAV ();	166	newpadlist = newAV ();
129	AvREAL_off (newpadlist);	167	AvREAL_off (newpadlist);
130	av_store (newpadlist, 0, (SV *) newpad_name);	168	#if PERL_VERSION < 9
		169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		170	#else
		171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		172	#endif
		173	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		174	--AvFILLp (padlist);
		175
		176	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
131	av_store (newpadlist, 1, (SV *) newpad);	177	av_store (newpadlist, 1, (SV *)newpad);
132		178
133	av = newAV (); /* will be @_ */	179	return newpadlist;
134	av_extend (av, 0);	180	}
135	av_store (newpad, 0, (SV *) av);
136	AvFLAGS (av) = AVf_REIFY;
137		181
138	for (ix = fpad; ix > 0; ix--)	182	static void
		183	free_padlist (pTHX_ AV *padlist)
		184	{
		185	/* may be during global destruction */
		186	if (SvREFCNT (padlist))
139	{	187	{
140	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	188	I32 i = AvFILLp (padlist);
141	if (namesv && namesv != &PL_sv_undef)	189	while (i >= 0)
142	{	190	{
143	char name = SvPVX (namesv); / XXX */	191	SV **svp = av_fetch (padlist, i--, FALSE);
144	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	192	if (svp)
145	{ /* lexical from outside? */
146	npad[ix] = SvREFCNT_inc (ppad[ix]);
147	}	193	{
148	else
149	{ /* our own lexical */
150	SV *sv;	194	SV *sv;
151	if (*name == '&')	195	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
152	sv = SvREFCNT_inc (ppad[ix]);	196	SvREFCNT_dec (sv);
153	else if (*name == '@')	197
154	sv = (SV *) newAV ();	198	SvREFCNT_dec (*svp);
155	else if (*name == '%')
156	sv = (SV *) newHV ();
157	else
158	sv = NEWSV (0, 0);
159	if (!SvPADBUSY (sv))
160	SvPADMY_on (sv);
161	npad[ix] = sv;
162	}	199	}
163	}	200	}
164	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	201
165	{	202	SvREFCNT_dec ((SV*)padlist);
166	npad[ix] = SvREFCNT_inc (ppad[ix]);
167	}
168	else
169	{
170	SV *sv = NEWSV (0, 0);
171	SvPADTMP_on (sv);
172	npad[ix] = sv;
173	}
174	}	203	}
		204	}
175		205
176	#if 0 /* return -ENOTUNDERSTOOD */	206	static int
177	/* Now that vars are all in place, clone nested closures. */	207	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		208	{
		209	AV *padlist;
		210	AV av = (AV )mg->mg_obj;
178		211
179	for (ix = fpad; ix > 0; ix--) {	212	/* casting is fun. */
180	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	213	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
181	if (namesv	214	free_padlist (aTHX_ padlist);
182	&& namesv != &PL_sv_undef	215
183	&& !(SvFLAGS(namesv) & SVf_FAKE)	216	SvREFCNT_dec (av);
184	&& *SvPVX(namesv) == '&'	217
185	&& CvCLONE(ppad[ix]))	218	return 0;
186	{	219	}
187	CV kid = cv_clone((CV)ppad[ix]);	220
188	SvREFCNT_dec(ppad[ix]);	221	#define PERL_MAGIC_coro PERL_MAGIC_ext
189	CvCLONE_on(kid);	222
190	SvPADMY_on(kid);	223	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
191	npad[ix] = (SV*)kid;	224
192	}	225	/* the next two functions merely cache the padlists */
		226	static void
		227	get_padlist (pTHX_ CV *cv)
		228	{
		229	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		230
		231	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
		232	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
		233	else
		234	{
		235	#if 0
		236	/* this should work - but it doesn't :( */
		237	CV *cp = Perl_cv_clone (aTHX_ cv);
		238	CvPADLIST (cv) = CvPADLIST (cp);
		239	CvPADLIST (cp) = 0;
		240	SvREFCNT_dec (cp);
		241	#else
		242	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		243	#endif
		244	}
		245	}
		246
		247	static void
		248	put_padlist (pTHX_ CV *cv)
		249	{
		250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		251
		252	if (!mg)
		253	{
		254	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		255	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		256	mg->mg_virtual = &vtbl_coro;
		257	mg->mg_obj = (SV *)newAV ();
193	}	258	}
194	#endif
195		259
196	return newpadlist;
197	}
198
199	#ifdef MAY_FLUSH
200	STATIC void
201	free_padlist (AV *padlist)
202	{
203	/* may be during global destruction */
204	if (SvREFCNT(padlist))
205	{
206	I32 i = AvFILLp(padlist);
207	while (i >= 0)
208	{
209	SV **svp = av_fetch(padlist, i--, FALSE);
210	SV sv = svp ? svp : Nullsv;
211	if (sv)
212	SvREFCNT_dec(sv);
213	}
214
215	SvREFCNT_dec((SV*)padlist);
216	}
217	}
218	#endif
219
220	/* the next two functions merely cache the padlists */
221	STATIC void
222	get_padlist (CV *cv)
223	{
224	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
225
226	if (he && AvFILLp ((AV )he) >= 0)
227	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
228	else
229	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
230	}
231
232	STATIC void
233	put_padlist (CV *cv)
234	{
235	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
236
237	if (SvTYPE (*he) != SVt_PVAV)
238	{
239	SvREFCNT_dec (*he);
240	he = (SV )newAV ();
241	}
242
243	av_push ((AV )he, (SV *)CvPADLIST (cv));	260	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
244	}	261	}
245
246	#ifdef MAY_FLUSH
247	STATIC void
248	flush_padlist_cache ()
249	{
250	HV *hv = padlist_cache;
251	padlist_cache = newHV ();
252
253	if (hv_iterinit (hv))
254	{
255	HE *he;
256	AV *padlist;
257
258	while (!!(he = hv_iternext (hv)))
259	{
260	AV av = (AV )HeVAL(he);
261
262	/* casting is fun. */
263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
264	free_padlist (padlist);
265	}
266	}
267
268	SvREFCNT_dec (hv);
269	}
270	#endif
271		262
272	#define SB do {	263	#define SB do {
273	#define SE } while (0)	264	#define SE } while (0)
274		265
275	#define LOAD(state) load_state(aTHX_ (state));	266	#define LOAD(state) load_state(aTHX_ (state));
276	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	267	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277		268
278	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	269	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
279		270
280	static void	271	static void
281	load_state(pTHX_ Coro__State c)	272	load_state(pTHX_ Coro__State c)
282	{	273	{
283	PL_dowarn = c->dowarn;	274	PL_dowarn = c->dowarn;
…		…
287	PL_curstack = c->curstack;	278	PL_curstack = c->curstack;
288	PL_mainstack = c->mainstack;	279	PL_mainstack = c->mainstack;
289	PL_stack_sp = c->stack_sp;	280	PL_stack_sp = c->stack_sp;
290	PL_op = c->op;	281	PL_op = c->op;
291	PL_curpad = c->curpad;	282	PL_curpad = c->curpad;
		283	PL_comppad = c->comppad;
		284	PL_compcv = c->compcv;
292	PL_stack_base = c->stack_base;	285	PL_stack_base = c->stack_base;
293	PL_stack_max = c->stack_max;	286	PL_stack_max = c->stack_max;
294	PL_tmps_stack = c->tmps_stack;	287	PL_tmps_stack = c->tmps_stack;
295	PL_tmps_floor = c->tmps_floor;	288	PL_tmps_floor = c->tmps_floor;
296	PL_tmps_ix = c->tmps_ix;	289	PL_tmps_ix = c->tmps_ix;
…		…
302	PL_scopestack_ix = c->scopestack_ix;	295	PL_scopestack_ix = c->scopestack_ix;
303	PL_scopestack_max = c->scopestack_max;	296	PL_scopestack_max = c->scopestack_max;
304	PL_savestack = c->savestack;	297	PL_savestack = c->savestack;
305	PL_savestack_ix = c->savestack_ix;	298	PL_savestack_ix = c->savestack_ix;
306	PL_savestack_max = c->savestack_max;	299	PL_savestack_max = c->savestack_max;
		300	#if PERL_VERSION < 9
307	PL_retstack = c->retstack;	301	PL_retstack = c->retstack;
308	PL_retstack_ix = c->retstack_ix;	302	PL_retstack_ix = c->retstack_ix;
309	PL_retstack_max = c->retstack_max;	303	PL_retstack_max = c->retstack_max;
		304	#endif
		305	PL_curpm = c->curpm;
310	PL_curcop = c->curcop;	306	PL_curcop = c->curcop;
311	PL_top_env = c->top_env;	307	PL_top_env = c->top_env;
312		308
313	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	309	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
314	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	310	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
323	{	319	{
324	AV padlist = (AV )POPs;	320	AV padlist = (AV )POPs;
325		321
326	if (padlist)	322	if (padlist)
327	{	323	{
328	put_padlist (cv); /* mark this padlist as available */	324	put_padlist (aTHX_ cv); /* mark this padlist as available */
329	CvPADLIST(cv) = padlist;	325	CvPADLIST(cv) = padlist;
330	#ifdef USE_THREADS
331	/CvOWNER(cv) = (struct perl_thread )POPs;*/
332	#endif
333	}	326	}
334		327
335	++CvDEPTH(cv);	328	++CvDEPTH(cv);
336	}	329	}
337		330
…		…
364	if (CxTYPE(cx) == CXt_SUB)	357	if (CxTYPE(cx) == CXt_SUB)
365	{	358	{
366	CV *cv = cx->blk_sub.cv;	359	CV *cv = cx->blk_sub.cv;
367	if (CvDEPTH(cv))	360	if (CvDEPTH(cv))
368	{	361	{
369	#ifdef USE_THREADS
370	/XPUSHs ((SV )CvOWNER(cv));*/
371	/CvOWNER(cv) = 0;/
372	/error must unlock this cv etc.. etc.../
373	#endif
374	EXTEND (SP, CvDEPTH(cv)*2);	362	EXTEND (SP, CvDEPTH(cv)*2);
375		363
376	while (--CvDEPTH(cv))	364	while (--CvDEPTH(cv))
377	{	365	{
378	/* this tells the restore code to increment CvDEPTH */	366	/* this tells the restore code to increment CvDEPTH */
…		…
381	}	369	}
382		370
383	PUSHs ((SV *)CvPADLIST(cv));	371	PUSHs ((SV *)CvPADLIST(cv));
384	PUSHs ((SV *)cv);	372	PUSHs ((SV *)cv);
385		373
386	get_padlist (cv); /* this is a monster */	374	get_padlist (aTHX_ cv);
387	}	375	}
388	}	376	}
		377	#ifdef CXt_FORMAT
389	else if (CxTYPE(cx) == CXt_FORMAT)	378	else if (CxTYPE(cx) == CXt_FORMAT)
390	{	379	{
391	/* I never used formats, so how should I know how these are implemented? */	380	/* I never used formats, so how should I know how these are implemented? */
392	/* my bold guess is as a simple, plain sub... */	381	/* my bold guess is as a simple, plain sub... */
393	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	382	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394	}	383	}
		384	#endif
395	}	385	}
396		386
397	if (top_si->si_type == PERLSI_MAIN)	387	if (top_si->si_type == PERLSI_MAIN)
398	break;	388	break;
399		389
…		…
416	c->curstack = PL_curstack;	406	c->curstack = PL_curstack;
417	c->mainstack = PL_mainstack;	407	c->mainstack = PL_mainstack;
418	c->stack_sp = PL_stack_sp;	408	c->stack_sp = PL_stack_sp;
419	c->op = PL_op;	409	c->op = PL_op;
420	c->curpad = PL_curpad;	410	c->curpad = PL_curpad;
		411	c->comppad = PL_comppad;
		412	c->compcv = PL_compcv;
421	c->stack_base = PL_stack_base;	413	c->stack_base = PL_stack_base;
422	c->stack_max = PL_stack_max;	414	c->stack_max = PL_stack_max;
423	c->tmps_stack = PL_tmps_stack;	415	c->tmps_stack = PL_tmps_stack;
424	c->tmps_floor = PL_tmps_floor;	416	c->tmps_floor = PL_tmps_floor;
425	c->tmps_ix = PL_tmps_ix;	417	c->tmps_ix = PL_tmps_ix;
…		…
431	c->scopestack_ix = PL_scopestack_ix;	423	c->scopestack_ix = PL_scopestack_ix;
432	c->scopestack_max = PL_scopestack_max;	424	c->scopestack_max = PL_scopestack_max;
433	c->savestack = PL_savestack;	425	c->savestack = PL_savestack;
434	c->savestack_ix = PL_savestack_ix;	426	c->savestack_ix = PL_savestack_ix;
435	c->savestack_max = PL_savestack_max;	427	c->savestack_max = PL_savestack_max;
		428	#if PERL_VERSION < 9
436	c->retstack = PL_retstack;	429	c->retstack = PL_retstack;
437	c->retstack_ix = PL_retstack_ix;	430	c->retstack_ix = PL_retstack_ix;
438	c->retstack_max = PL_retstack_max;	431	c->retstack_max = PL_retstack_max;
		432	#endif
		433	c->curpm = PL_curpm;
439	c->curcop = PL_curcop;	434	c->curcop = PL_curcop;
440	c->top_env = PL_top_env;	435	c->top_env = PL_top_env;
441	}	436	}
442		437
443	/*	438	/*
444	* allocate various perl stacks. This is an exact copy	439	* allocate various perl stacks. This is an exact copy
445	* of perl.c:init_stacks, except that it uses less memory	440	* of perl.c:init_stacks, except that it uses less memory
446	* on the assumption that coroutines do not usually need	441	* on the (sometimes correct) assumption that coroutines do
447	* a lot of stackspace.	442	* not usually need a lot of stackspace.
448	*/	443	*/
449	STATIC void	444	static void
450	coro_init_stacks (pTHX)	445	coro_init_stacks (pTHX)
451	{	446	{
		447	LOCK;
		448
452	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
453	PL_curstackinfo->si_type = PERLSI_MAIN;	450	PL_curstackinfo->si_type = PERLSI_MAIN;
454	PL_curstack = PL_curstackinfo->si_stack;	451	PL_curstack = PL_curstackinfo->si_stack;
455	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
456		453
…		…
465		462
466	New(54,PL_markstack,16,I32);	463	New(54,PL_markstack,16,I32);
467	PL_markstack_ptr = PL_markstack;	464	PL_markstack_ptr = PL_markstack;
468	PL_markstack_max = PL_markstack + 16;	465	PL_markstack_max = PL_markstack + 16;
469		466
		467	#ifdef SET_MARK_OFFSET
470	SET_MARK_OFFSET;	468	SET_MARK_OFFSET;
		469	#endif
471		470
472	New(54,PL_scopestack,16,I32);	471	New(54,PL_scopestack,16,I32);
473	PL_scopestack_ix = 0;	472	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	473	PL_scopestack_max = 16;
475		474
476	New(54,PL_savestack,96,ANY);	475	New(54,PL_savestack,96,ANY);
477	PL_savestack_ix = 0;	476	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	477	PL_savestack_max = 96;
479		478
		479	#if PERL_VERSION < 9
480	New(54,PL_retstack,8,OP*);	480	New(54,PL_retstack,8,OP*);
481	PL_retstack_ix = 0;	481	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	482	PL_retstack_max = 8;
		483	#endif
		484
		485	UNLOCK;
483	}	486	}
484		487
485	/*	488	/*
486	* destroy the stacks, the callchain etc...	489	* destroy the stacks, the callchain etc...
487	* still there is a memleak of 128 bytes...
488	*/	490	*/
489	STATIC void	491	static void
490	destroy_stacks(pTHX)	492	destroy_stacks(pTHX)
491	{	493	{
492	int destruct = PL_main_cv != Nullcv;	494	if (!IN_DESTRUCT)
493
494	if (destruct)
495	{	495	{
496	/* is this ugly, I ask? */	496	/* is this ugly, I ask? */
497	while (PL_scopestack_ix)	497	LEAVE_SCOPE (0);
498	LEAVE;
499		498
500	/* sure it is, but more important: is it correct?? :/ */	499	/* sure it is, but more important: is it correct?? :/ */
501	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
502	FREETMPS;	500	FREETMPS;
		501
		502	/POPSTACK_TO (PL_mainstack);//D//use/
503	}	503	}
504		504
505	while (PL_curstackinfo->si_next)	505	while (PL_curstackinfo->si_next)
506	PL_curstackinfo = PL_curstackinfo->si_next;	506	PL_curstackinfo = PL_curstackinfo->si_next;
507		507
508	while (PL_curstackinfo)	508	while (PL_curstackinfo)
509	{	509	{
510	PERL_SI *p = PL_curstackinfo->si_prev;	510	PERL_SI *p = PL_curstackinfo->si_prev;
511		511
512	{	512	{ /D//remove/
513	dSP;	513	dSP;
514	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	514	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
515	PUTBACK; /* possibly superfluous */	515	PUTBACK; /* possibly superfluous */
516	}	516	}
517		517
518	if (destruct)	518	if (!IN_DESTRUCT)
519	{	519	{
520	dounwind(-1);	520	dounwind (-1);/D//remove/
521	SvREFCNT_dec(PL_curstackinfo->si_stack);	521	SvREFCNT_dec (PL_curstackinfo->si_stack);
522	}	522	}
523		523
524	Safefree(PL_curstackinfo->si_cxstack);	524	Safefree (PL_curstackinfo->si_cxstack);
525	Safefree(PL_curstackinfo);	525	Safefree (PL_curstackinfo);
526	PL_curstackinfo = p;	526	PL_curstackinfo = p;
527	}	527	}
528		528
529	Safefree(PL_tmps_stack);	529	Safefree (PL_tmps_stack);
530	Safefree(PL_markstack);	530	Safefree (PL_markstack);
531	Safefree(PL_scopestack);	531	Safefree (PL_scopestack);
532	Safefree(PL_savestack);	532	Safefree (PL_savestack);
		533	#if PERL_VERSION < 9
533	Safefree(PL_retstack);	534	Safefree (PL_retstack);
		535	#endif
534	}	536	}
535		537
536	static void	538	static void
537	allocate_stack (Coro__State ctx, int alloc)	539	allocate_stack (Coro__State ctx, int alloc)
538	{	540	{
…		…
541	New (0, stack, 1, coro_stack);	543	New (0, stack, 1, coro_stack);
542		544
543	stack->refcnt = 1;	545	stack->refcnt = 1;
544	stack->usecnt = 1;	546	stack->usecnt = 1;
545	stack->gencnt = ctx->gencnt = 0;	547	stack->gencnt = ctx->gencnt = 0;
		548
546	if (alloc)	549	if (alloc)
547	{	550	{
548	#ifdef HAVE_MMAP	551	#if HAVE_MMAP
549	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	552	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	553	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
551	if (stack->sptr == (void *)-1)	554	if (stack->sptr != (void *)-1)
552	#endif
553	{	555	{
554	/FIXME//D//* reasonable stack size! */	556	# if STACKGUARD
		557	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		558	# endif
		559	}
		560	else
		561	#endif
		562	{
555	stack->ssize = -4096 * sizeof (long);	563	stack->ssize = - (STACKSIZE * (long)sizeof (long));
556	New (0, stack->sptr, 4096, long);	564	New (0, stack->sptr, STACKSIZE, long);
557	}	565	}
558	}	566	}
559	else	567	else
560	stack->sptr = 0;	568	stack->sptr = 0;
561		569
…		…
575	{	583	{
576	#ifdef HAVE_MMAP	584	#ifdef HAVE_MMAP
577	if (stack->ssize > 0 && stack->sptr)	585	if (stack->ssize > 0 && stack->sptr)
578	munmap (stack->sptr, stack->ssize);	586	munmap (stack->sptr, stack->ssize);
579	else	587	else
580	#else	588	#endif
581	Safefree (stack->sptr);	589	Safefree (stack->sptr);
582	#endif	590
583	Safefree (stack);	591	Safefree (stack);
584	}	592	}
585	else if (ctx->gencnt == stack->gencnt)	593	else if (ctx->gencnt == stack->gencnt)
586	--stack->usecnt;	594	--stack->usecnt;
587	}	595	}
…		…
591	setup_coro (void *arg)	599	setup_coro (void *arg)
592	{	600	{
593	/*	601	/*
594	* emulate part of the perl startup here.	602	* emulate part of the perl startup here.
595	*/	603	*/
		604	dTHX;
596	dSP;	605	dSP;
597	Coro__State ctx = (Coro__State)arg;	606	Coro__State ctx = (Coro__State)arg;
598	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	607	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
599		608
600	coro_init_stacks (aTHX);	609	coro_init_stacks (aTHX);
601	/PL_curcop = 0;/	610	/PL_curcop = 0;/
602	/PL_in_eval = PL_in_eval;/ /* inherit */	611	/PL_in_eval = PL_in_eval;/ /* inherit */
603	SvREFCNT_dec (GvAV (PL_defgv));	612	SvREFCNT_dec (GvAV (PL_defgv));
604	GvAV (PL_defgv) = ctx->args;	613	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
605		614
606	SPAGAIN;	615	SPAGAIN;
607		616
608	if (ctx->stack)	617	if (ctx->stack)
609	{	618	{
…		…
620	}	629	}
621	else	630	else
622	{	631	{
623	UNOP myop;	632	UNOP myop;
624		633
625	PL_op = (OP *)&myop;
626
627	Zero(&myop, 1, UNOP);	634	Zero(&myop, 1, UNOP);
628	myop.op_next = Nullop;	635	myop.op_next = Nullop;
629	myop.op_flags = OPf_WANT_VOID;	636	myop.op_flags = OPf_WANT_VOID;
		637
		638	PL_op = (OP *)&myop;
630		639
631	PUSHMARK(SP);	640	PUSHMARK(SP);
632	XPUSHs (sub_init);	641	XPUSHs (sub_init);
633	/*	642	/*
634	* the next line is slightly wrong, as PL_op->op_next	643	* the next line is slightly wrong, as PL_op->op_next
…		…
636	* that doesn't matter, though, since it is only	645	* that doesn't matter, though, since it is only
637	* pp_nextstate and we never return...	646	* pp_nextstate and we never return...
638	* ah yes, and I don't care anyways ;)	647	* ah yes, and I don't care anyways ;)
639	*/	648	*/
640	PUTBACK;	649	PUTBACK;
641	PL_op = pp_entersub();	650	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
642	SPAGAIN;	651	SPAGAIN;
643		652
644	ENTER; /* necessary e.g. for dounwind */	653	ENTER; /* necessary e.g. for dounwind */
645	}	654	}
646	}	655	}
…		…
649	continue_coro (void *arg)	658	continue_coro (void *arg)
650	{	659	{
651	/*	660	/*
652	* this is a _very_ stripped down perl interpreter ;)	661	* this is a _very_ stripped down perl interpreter ;)
653	*/	662	*/
		663	dTHX;
654	Coro__State ctx = (Coro__State)arg;	664	Coro__State ctx = (Coro__State)arg;
655		665
656	/FIXME//* must set up top_env here */	666	PL_top_env = &ctx->start_env;
		667
657	ctx->cursp = 0;	668	ctx->cursp = 0;
658	PL_op = PL_op->op_next;	669	PL_op = PL_op->op_next;
659	CALLRUNOPS(aTHX);	670	CALLRUNOPS(aTHX);
660		671
661	abort ();	672	abort ();
662	}	673	}
663		674
664	STATIC void	675	static void
665	transfer(pTHX_ struct coro prev, struct coro next, int flags)	676	transfer (pTHX_ struct coro prev, struct coro next, int flags)
666	{	677	{
667	dSTACKLEVEL;	678	dSTACKLEVEL;
668	static struct coro *xnext;
669		679
670	if (prev != next)	680	if (prev != next)
671	{	681	{
672	xnext = next;
673
674	if (next->mainstack)	682	if (next->mainstack)
675	{	683	{
		684	LOCK;
676	SAVE (prev, flags);	685	SAVE (prev, flags);
677	LOAD (next);	686	LOAD (next);
		687	UNLOCK;
678		688
679	/* mark this state as in-use */	689	/* mark this state as in-use */
680	next->mainstack = 0;	690	next->mainstack = 0;
681	next->tmps_ix = -2;	691	next->tmps_ix = -2;
682		692
…		…
701	continue_coro, (void *)next,	711	continue_coro, (void *)next,
702	next->stack->sptr, labs (next->stack->ssize));	712	next->stack->sptr, labs (next->stack->ssize));
703	}	713	}
704		714
705	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		716	prev->cursp = stacklevel;
706	/* don't add any code here */	717	/* don't add any code here */
707	}	718	}
708		719	else
		720	next->cursp = stacklevel;
709	}	721	}
710	else if (next->tmps_ix == -2)	722	else if (next->tmps_ix == -2)
711	croak ("tried to transfer to running coroutine");	723	croak ("tried to transfer to running coroutine");
712	else	724	else
713	{	725	{
		726	LOCK;
714	SAVE (prev, -1); /* first get rid of the old state */	727	SAVE (prev, -1); /* first get rid of the old state */
		728	UNLOCK;
715		729
716	if (flags & TRANSFER_SAVE_CCTXT)	730	if (flags & TRANSFER_SAVE_CCTXT)
717	{	731	{
718	if (!prev->stack)	732	if (!prev->stack)
719	allocate_stack (prev, 0);	733	allocate_stack (prev, 0);
720		734
721	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	735	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
722	{	736	{
		737	PL_top_env = &next->start_env;
		738
723	setup_coro (next);	739	setup_coro (next);
		740	next->cursp = stacklevel;
724		741
725	prev->stack->refcnt++;	742	prev->stack->refcnt++;
726	prev->stack->usecnt++;	743	prev->stack->usecnt++;
727	next->stack = prev->stack;	744	next->stack = prev->stack;
728	next->gencnt = prev->gencnt;	745	next->gencnt = prev->gencnt;
729	}	746	}
730	else	747	else
731	{	748	{
		749	assert (!next->stack);
732	allocate_stack (next, 1);	750	allocate_stack (next, 1);
733	coro_create (&(next->stack->cctx),	751	coro_create (&(next->stack->cctx),
734	setup_coro, (void *)next,	752	setup_coro, (void *)next,
735	next->stack->sptr, labs (next->stack->ssize));	753	next->stack->sptr, labs (next->stack->ssize));
736	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		755	prev->cursp = stacklevel;
737	/* don't add any code here */	756	/* don't add any code here */
738	}	757	}
739	}	758	}
740	else	759	else
		760	{
741	setup_coro (next);	761	setup_coro (next);
		762	next->cursp = stacklevel;
		763	}
742	}	764	}
743	}	765	}
744		766
745	/*	767	LOCK;
746	* xnext is now either prev or next, depending on wether	768	if (coro_mortal)
747	* we switched the c stack or not. that's why i use a global
748	* variable, that should become thread-specific at one point.
749	*/
750	xnext->cursp = stacklevel;
751	}
752
753	static struct coro *
754	sv_to_coro (SV arg, const char funcname, const char *varname)
755	{
756	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
757	{	769	{
758	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	770	SvREFCNT_dec (coro_mortal);
759		771	coro_mortal = 0;
760	if (!he)
761	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
762
763	arg = HeVAL(he);
764	}	772	}
765		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	\
766	/* must also be changed inside Coro::Cont::yield */	791	/* must also be changed inside Coro::Cont::yield */ \
767	if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)	792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
768	return (struct coro ) SvIV((SV)SvRV(arg));
769
770	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
771	/NORETURN/	794	\
772	}	795	} while(0)
		796
		797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
773		798
774	static void	799	static void
775	api_transfer(pTHX_ SV prev, SV next, int flags)	800	api_transfer(pTHX_ SV prev, SV next, int flags)
776	{	801	{
777	transfer(aTHX_	802	SV_CORO (prev, "Coro::transfer");
778	sv_to_coro (prev, "Coro::transfer", "prev"),	803	SV_CORO (next, "Coro::transfer");
779	sv_to_coro (next, "Coro::transfer", "next"),	804
780	flags);	805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
781	}	806	}
782		807
783	/ Coro ******************************************************************/	808	/ Coro ******************************************************************/
784		809
785	#define PRIO_MAX 3	810	#define PRIO_MAX 3
…		…
793	static GV coro_current, coro_idle;	818	static GV coro_current, coro_idle;
794	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
795	static int coro_nready;	820	static int coro_nready;
796		821
797	static void	822	static void
798	coro_enq (SV *sv)	823	coro_enq (pTHX_ SV *sv)
799	{	824	{
800	if (SvROK (sv))	825	SV **xprio;
801	{	826	int prio;
802	SV *hv = SvRV (sv);	827
803	if (SvTYPE (hv) == SVt_PVHV)	828	if (SvTYPE (sv) != SVt_PVHV)
804	{
805	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);
806	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
807
808	prio = prio > PRIO_MAX ? PRIO_MAX
809	: prio < PRIO_MIN ? PRIO_MIN
810	: prio;
811
812	av_push (coro_ready [prio - PRIO_MIN], sv);
813	coro_nready++;
814
815	return;
816	}
817	}
818
819	croak ("Coro::ready tried to enqueue something that is not a coroutine");	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++;
820	}	840	}
821		841
822	static SV *	842	static SV *
823	coro_deq (int min_prio)	843	coro_deq (pTHX_ int min_prio)
824	{	844	{
825	int prio = PRIO_MAX - PRIO_MIN;	845	int prio = PRIO_MAX - PRIO_MIN;
826		846
827	min_prio -= PRIO_MIN;	847	min_prio -= PRIO_MIN;
828	if (min_prio < 0)	848	if (min_prio < 0)
…		…
839	}	859	}
840		860
841	static void	861	static void
842	api_ready (SV *coro)	862	api_ready (SV *coro)
843	{	863	{
		864	dTHX;
		865
		866	if (SvROK (coro))
		867	coro = SvRV (coro);
		868
		869	LOCK;
844	coro_enq (SvREFCNT_inc (coro));	870	coro_enq (aTHX_ SvREFCNT_inc (coro));
		871	UNLOCK;
845	}	872	}
846		873
847	static void	874	static void
848	api_schedule (int cede)	875	api_schedule (void)
849	{	876	{
		877	dTHX;
		878
850	SV prev, next;	879	SV prev, next;
851		880
		881	LOCK;
		882
852	prev = GvSV (coro_current);	883	prev = SvRV (GvSV (coro_current));
853
854	if (cede)
855	coro_enq (SvREFCNT_inc (prev));
856
857	next = coro_deq (PRIO_MIN);	884	next = coro_deq (aTHX_ PRIO_MIN);
858		885
859	if (!next)	886	if (!next)
860	next = SvREFCNT_inc (GvSV (coro_idle));	887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
861		888
862	GvSV (coro_current) = SvREFCNT_inc (next);	889	/* free this only after the transfer */
863	transfer (aTHX_	890	coro_mortal = prev;
864	sv_to_coro (prev, "Coro::schedule", "current coroutine"),	891	SV_CORO (prev, "Coro::schedule");
865	sv_to_coro (next, "Coro::schedule", "next coroutine"),	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),
866	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
867	SvREFCNT_dec (next);	901	}
868	SvREFCNT_dec (prev);	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 ();
869	}	913	}
870		914
871	MODULE = Coro::State PACKAGE = Coro::State	915	MODULE = Coro::State PACKAGE = Coro::State
872		916
873	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
874		918
875	BOOT:	919	BOOT:
876	{ /* {} 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
877	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
878	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
879	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
880		929
881	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
882	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
883	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
884	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
885
886	if (!padlist_cache)
887	padlist_cache = newHV ();
888		934
889	main_mainstack = PL_mainstack;	935	main_mainstack = PL_mainstack;
890		936
891	coroapi.ver = CORO_API_VERSION;	937	coroapi.ver = CORO_API_VERSION;
892	coroapi.transfer = api_transfer;	938	coroapi.transfer = api_transfer;
…		…
900	Coro__State coro;	946	Coro__State coro;
901		947
902	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
903	croak ("Coro::State::_newprocess expects an arrayref");	949	croak ("Coro::State::_newprocess expects an arrayref");
904		950
905	New (0, coro, 1, struct coro);	951	Newz (0, coro, 1, struct coro);
906		952
907	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
908	coro->mainstack = 0; /* actual work is done inside transfer */	954	/coro->mainstack = 0; //actual work is done inside transfer /
909	coro->stack = 0;	955	/coro->stack = 0;/
		956
		957	/* same as JMPENV_BOOTSTRAP */
		958	/* we might be able to recycle start_env, but safe is safe */
		959	/Zero (&coro->start_env, 1, JMPENV);/
		960	coro->start_env.je_ret = -1;
		961	coro->start_env.je_mustcatch = TRUE;
910		962
911	RETVAL = coro;	963	RETVAL = coro;
912	OUTPUT:	964	OUTPUT:
913	RETVAL	965	RETVAL
914		966
915	void	967	void
916	transfer(prev, next, flags)	968	transfer(prev, next, flags)
917	Coro::State_or_hashref prev	969	SV *prev
918	Coro::State_or_hashref next	970	SV *next
919	int flags	971	int flags
920	PROTOTYPE: @	972	PROTOTYPE: @
921	CODE:	973	CODE:
922	PUTBACK;	974	PUTBACK;
		975	SV_CORO (next, "Coro::transfer");
		976	SV_CORO (prev, "Coro::transfer");
923	transfer (aTHX_ prev, next, flags);	977	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
924	SPAGAIN;	978	SPAGAIN;
925		979
926	void	980	void
927	DESTROY(coro)	981	DESTROY(coro)
928	Coro::State coro	982	Coro::State coro
…		…
931	if (coro->mainstack && coro->mainstack != main_mainstack)	985	if (coro->mainstack && coro->mainstack != main_mainstack)
932	{	986	{
933	struct coro temp;	987	struct coro temp;
934		988
935	PUTBACK;	989	PUTBACK;
936	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	990	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
937	LOAD(aTHX_ coro);	991	LOAD (aTHX_ coro);
938	SPAGAIN;	992	SPAGAIN;
939		993
940	destroy_stacks (aTHX);	994	destroy_stacks (aTHX);
941		995
942	LOAD((&temp)); /* this will get rid of defsv etc.. */	996	LOAD ((&temp)); /* this will get rid of defsv etc.. */
943	SPAGAIN;	997	SPAGAIN;
944		998
945	coro->mainstack = 0;	999	coro->mainstack = 0;
946	}	1000	}
947		1001
948	deallocate_stack (coro);	1002	deallocate_stack (coro);
949		1003	SvREFCNT_dec (coro->args);
950	Safefree (coro);	1004	Safefree (coro);
951
952	void
953	flush()
954	CODE:
955	#ifdef MAY_FLUSH
956	flush_padlist_cache ();
957	#endif
958		1005
959	void	1006	void
960	_exit(code)	1007	_exit(code)
961	int code	1008	int code
962	PROTOTYPE: $	1009	PROTOTYPE: $
963	CODE:	1010	CODE:
964	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
965	_exit (code);	1011	_exit (code);
966	#else
967	signal (SIGTERM, SIG_DFL);
968	raise (SIGTERM);
969	exit (code);
970	#endif
971		1012
972	MODULE = Coro::State PACKAGE = Coro::Cont	1013	MODULE = Coro::State PACKAGE = Coro::Cont
973		1014
974	# this is slightly dirty (should expose a c-level api)	1015	# this is slightly dirty (should expose a c-level api)
975		1016
976	void	1017	void
977	yield(...)	1018	yield(...)
978	PROTOTYPE: @	1019	PROTOTYPE: @
979	CODE:	1020	CODE:
980	static SV *returnstk;	1021	SV *yieldstack;
981	SV *sv;	1022	SV *sv;
982	AV *defav = GvAV (PL_defgv);	1023	AV *defav = GvAV (PL_defgv);
983	struct coro prev, next;	1024	struct coro prev, next;
984		1025
985	if (!returnstk)	1026	yieldstack = *hv_fetch (
986	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1027	(HV *)SvRV (GvSV (coro_current)),
		1028	"yieldstack", sizeof ("yieldstack") - 1,
		1029	0
		1030	);
987		1031
988	/* set up @_ -- ugly */	1032	/* set up @_ -- ugly */
989	av_clear (defav);	1033	av_clear (defav);
990	av_fill (defav, items - 1);	1034	av_fill (defav, items - 1);
991	while (items--)	1035	while (items--)
992	av_store (defav, items, SvREFCNT_inc (ST(items)));	1036	av_store (defav, items, SvREFCNT_inc (ST(items)));
993		1037
994	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
995	sv = av_pop ((AV *)SvRV (returnstk));	1038	sv = av_pop ((AV *)SvRV (yieldstack));
996	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1039	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
997	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1040	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
998	SvREFCNT_dec (sv);	1041	SvREFCNT_dec (sv);
999		1042
1000	transfer(aTHX_ prev, next, 0);	1043	transfer (aTHX_ prev, next, 0);
1001		1044
1002	MODULE = Coro::State PACKAGE = Coro	1045	MODULE = Coro::State PACKAGE = Coro
1003		1046
1004	# this is slightly dirty (should expose a c-level api)	1047	# this is slightly dirty (should expose a c-level api)
1005		1048
…		…
1023		1066
1024	{	1067	{
1025	SV *sv = perl_get_sv("Coro::API", 1);	1068	SV *sv = perl_get_sv("Coro::API", 1);
1026		1069
1027	coroapi.schedule = api_schedule;	1070	coroapi.schedule = api_schedule;
		1071	coroapi.cede = api_cede;
1028	coroapi.ready = api_ready;	1072	coroapi.ready = api_ready;
1029	coroapi.nready = &coro_nready;	1073	coroapi.nready = &coro_nready;
1030	coroapi.current = coro_current;	1074	coroapi.current = coro_current;
1031		1075
1032	GCoroAPI = &coroapi;	1076	GCoroAPI = &coroapi;
1033	sv_setiv(sv, (IV)&coroapi);	1077	sv_setiv(sv, (IV)&coroapi);
1034	SvREADONLY_on(sv);	1078	SvREADONLY_on(sv);
1035	}	1079	}
1036	}	1080	}
1037		1081
		1082	#if !PERL_MICRO
		1083
1038	void	1084	void
1039	ready(self)	1085	ready(self)
1040	SV * self	1086	SV * self
		1087	PROTOTYPE: $
1041	CODE:	1088	CODE:
1042	api_ready (self);	1089	api_ready (self);
		1090
		1091	#endif
1043		1092
1044	int	1093	int
1045	nready(...)	1094	nready(...)
1046	PROTOTYPE:	1095	PROTOTYPE:
1047	CODE:	1096	CODE:
…		…
1050	RETVAL	1099	RETVAL
1051		1100
1052	void	1101	void
1053	schedule(...)	1102	schedule(...)
1054	PROTOTYPE:	1103	PROTOTYPE:
1055	ALIAS:
1056	cede = 1
1057	CODE:	1104	CODE:
1058	api_schedule (ix);	1105	api_schedule ();
1059		1106
		1107	void
		1108	cede(...)
		1109	PROTOTYPE:
		1110	CODE:
		1111	api_cede ();
		1112
		1113	# and these are hacks
		1114	SV *
		1115	_aio_get_state ()
		1116	CODE:
		1117	{
		1118	struct {
		1119	int errorno;
		1120	int laststype;
		1121	int laststatval;
		1122	Stat_t statcache;
		1123	} data;
		1124
		1125	data.errorno = errno;
		1126	data.laststype = PL_laststype;
		1127	data.laststatval = PL_laststatval;
		1128	data.statcache = PL_statcache;
		1129
		1130	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1131	}
		1132	OUTPUT:
		1133	RETVAL
		1134
		1135	void
		1136	_aio_set_state (char *data_)
		1137	PROTOTYPE: $
		1138	CODE:
		1139	{
		1140	struct {
		1141	int errorno;
		1142	int laststype;
		1143	int laststatval;
		1144	Stat_t statcache;
		1145	} data = (void )data_;
		1146
		1147	errno = data->errorno;
		1148	PL_laststype = data->laststype;
		1149	PL_laststatval = data->laststatval;
		1150	PL_statcache = data->statcache;
		1151	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.31 by root, Sun Aug 26 16:36:08 2001 UTC vs. Revision 1.80 by root, Thu Nov 2 20:00:00 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.31 by root, Sun Aug 26 16:36:08 2001 UTC vs.
Revision 1.80 by root, Thu Nov 2 20:00:00 2006 UTC