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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.33 by root, Sun Aug 26 21:44:20 2001 UTC vs.
Revision 1.78 by root, Wed Nov 1 01:21:21 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	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		170	--AvFILLp (padlist);
		171
		172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
131	av_store (newpadlist, 1, (SV *) newpad);	173	av_store (newpadlist, 1, (SV *)newpad);
132		174
133	av = newAV (); /* will be @_ */	175	return newpadlist;
134	av_extend (av, 0);	176	}
135	av_store (newpad, 0, (SV *) av);
136	AvFLAGS (av) = AVf_REIFY;
137		177
138	for (ix = fpad; ix > 0; ix--)	178	static void
		179	free_padlist (pTHX_ AV *padlist)
		180	{
		181	/* may be during global destruction */
		182	if (SvREFCNT (padlist))
139	{	183	{
140	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	184	I32 i = AvFILLp (padlist);
141	if (namesv && namesv != &PL_sv_undef)	185	while (i >= 0)
142	{	186	{
143	char name = SvPVX (namesv); / XXX */	187	SV **svp = av_fetch (padlist, i--, FALSE);
144	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	188	if (svp)
145	{ /* lexical from outside? */
146	npad[ix] = SvREFCNT_inc (ppad[ix]);
147	}	189	{
148	else
149	{ /* our own lexical */
150	SV *sv;	190	SV *sv;
151	if (*name == '&')	191	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
152	sv = SvREFCNT_inc (ppad[ix]);	192	SvREFCNT_dec (sv);
153	else if (*name == '@')	193
154	sv = (SV *) newAV ();	194	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	}	195	}
163	}	196	}
164	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	197
165	{	198	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	}	199	}
		200	}
175		201
176	#if 0 /* return -ENOTUNDERSTOOD */	202	static int
177	/* Now that vars are all in place, clone nested closures. */	203	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		204	{
		205	AV *padlist;
		206	AV av = (AV )mg->mg_obj;
178		207
179	for (ix = fpad; ix > 0; ix--) {	208	/* casting is fun. */
180	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
181	if (namesv	210	free_padlist (aTHX_ padlist);
182	&& namesv != &PL_sv_undef	211
183	&& !(SvFLAGS(namesv) & SVf_FAKE)	212	SvREFCNT_dec (av);
184	&& *SvPVX(namesv) == '&'	213
185	&& CvCLONE(ppad[ix]))	214	return 0;
186	{	215	}
187	CV kid = cv_clone((CV)ppad[ix]);	216
188	SvREFCNT_dec(ppad[ix]);	217	#define PERL_MAGIC_coro PERL_MAGIC_ext
189	CvCLONE_on(kid);	218
190	SvPADMY_on(kid);	219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
191	npad[ix] = (SV*)kid;	220
192	}	221	/* the next two functions merely cache the padlists */
		222	static void
		223	get_padlist (pTHX_ CV *cv)
		224	{
		225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		226
		227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
		228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
		229	else
		230	{
		231	#if 0
		232	/* this should work - but it doesn't :( */
		233	CV *cp = Perl_cv_clone (aTHX_ cv);
		234	CvPADLIST (cv) = CvPADLIST (cp);
		235	CvPADLIST (cp) = 0;
		236	SvREFCNT_dec (cp);
		237	#else
		238	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		239	#endif
		240	}
		241	}
		242
		243	static void
		244	put_padlist (pTHX_ CV *cv)
		245	{
		246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		247
		248	if (!mg)
		249	{
		250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		252	mg->mg_virtual = &vtbl_coro;
		253	mg->mg_obj = (SV *)newAV ();
193	}	254	}
194	#endif
195		255
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));	256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
244	}	257	}
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		258
272	#define SB do {	259	#define SB do {
273	#define SE } while (0)	260	#define SE } while (0)
274		261
275	#define LOAD(state) load_state(aTHX_ (state));	262	#define LOAD(state) load_state(aTHX_ (state));
276	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	263	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277		264
278	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
279		266
280	static void	267	static void
281	load_state(pTHX_ Coro__State c)	268	load_state(pTHX_ Coro__State c)
282	{	269	{
283	PL_dowarn = c->dowarn;	270	PL_dowarn = c->dowarn;
…		…
287	PL_curstack = c->curstack;	274	PL_curstack = c->curstack;
288	PL_mainstack = c->mainstack;	275	PL_mainstack = c->mainstack;
289	PL_stack_sp = c->stack_sp;	276	PL_stack_sp = c->stack_sp;
290	PL_op = c->op;	277	PL_op = c->op;
291	PL_curpad = c->curpad;	278	PL_curpad = c->curpad;
		279	PL_comppad = c->comppad;
		280	PL_compcv = c->compcv;
292	PL_stack_base = c->stack_base;	281	PL_stack_base = c->stack_base;
293	PL_stack_max = c->stack_max;	282	PL_stack_max = c->stack_max;
294	PL_tmps_stack = c->tmps_stack;	283	PL_tmps_stack = c->tmps_stack;
295	PL_tmps_floor = c->tmps_floor;	284	PL_tmps_floor = c->tmps_floor;
296	PL_tmps_ix = c->tmps_ix;	285	PL_tmps_ix = c->tmps_ix;
…		…
302	PL_scopestack_ix = c->scopestack_ix;	291	PL_scopestack_ix = c->scopestack_ix;
303	PL_scopestack_max = c->scopestack_max;	292	PL_scopestack_max = c->scopestack_max;
304	PL_savestack = c->savestack;	293	PL_savestack = c->savestack;
305	PL_savestack_ix = c->savestack_ix;	294	PL_savestack_ix = c->savestack_ix;
306	PL_savestack_max = c->savestack_max;	295	PL_savestack_max = c->savestack_max;
		296	#if PERL_VERSION < 9
307	PL_retstack = c->retstack;	297	PL_retstack = c->retstack;
308	PL_retstack_ix = c->retstack_ix;	298	PL_retstack_ix = c->retstack_ix;
309	PL_retstack_max = c->retstack_max;	299	PL_retstack_max = c->retstack_max;
		300	#endif
		301	PL_curpm = c->curpm;
310	PL_curcop = c->curcop;	302	PL_curcop = c->curcop;
311	PL_top_env = c->top_env;	303	PL_top_env = c->top_env;
312		304
313	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
314	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
323	{	315	{
324	AV padlist = (AV )POPs;	316	AV padlist = (AV )POPs;
325		317
326	if (padlist)	318	if (padlist)
327	{	319	{
328	put_padlist (cv); /* mark this padlist as available */	320	put_padlist (aTHX_ cv); /* mark this padlist as available */
329	CvPADLIST(cv) = padlist;	321	CvPADLIST(cv) = padlist;
330	#ifdef USE_THREADS
331	/CvOWNER(cv) = (struct perl_thread )POPs;*/
332	#endif
333	}	322	}
334		323
335	++CvDEPTH(cv);	324	++CvDEPTH(cv);
336	}	325	}
337		326
…		…
364	if (CxTYPE(cx) == CXt_SUB)	353	if (CxTYPE(cx) == CXt_SUB)
365	{	354	{
366	CV *cv = cx->blk_sub.cv;	355	CV *cv = cx->blk_sub.cv;
367	if (CvDEPTH(cv))	356	if (CvDEPTH(cv))
368	{	357	{
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);	358	EXTEND (SP, CvDEPTH(cv)*2);
375		359
376	while (--CvDEPTH(cv))	360	while (--CvDEPTH(cv))
377	{	361	{
378	/* this tells the restore code to increment CvDEPTH */	362	/* this tells the restore code to increment CvDEPTH */
…		…
381	}	365	}
382		366
383	PUSHs ((SV *)CvPADLIST(cv));	367	PUSHs ((SV *)CvPADLIST(cv));
384	PUSHs ((SV *)cv);	368	PUSHs ((SV *)cv);
385		369
386	get_padlist (cv); /* this is a monster */	370	get_padlist (aTHX_ cv);
387	}	371	}
388	}	372	}
		373	#ifdef CXt_FORMAT
389	else if (CxTYPE(cx) == CXt_FORMAT)	374	else if (CxTYPE(cx) == CXt_FORMAT)
390	{	375	{
391	/* I never used formats, so how should I know how these are implemented? */	376	/* I never used formats, so how should I know how these are implemented? */
392	/* my bold guess is as a simple, plain sub... */	377	/* my bold guess is as a simple, plain sub... */
393	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	378	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394	}	379	}
		380	#endif
395	}	381	}
396		382
397	if (top_si->si_type == PERLSI_MAIN)	383	if (top_si->si_type == PERLSI_MAIN)
398	break;	384	break;
399		385
…		…
416	c->curstack = PL_curstack;	402	c->curstack = PL_curstack;
417	c->mainstack = PL_mainstack;	403	c->mainstack = PL_mainstack;
418	c->stack_sp = PL_stack_sp;	404	c->stack_sp = PL_stack_sp;
419	c->op = PL_op;	405	c->op = PL_op;
420	c->curpad = PL_curpad;	406	c->curpad = PL_curpad;
		407	c->comppad = PL_comppad;
		408	c->compcv = PL_compcv;
421	c->stack_base = PL_stack_base;	409	c->stack_base = PL_stack_base;
422	c->stack_max = PL_stack_max;	410	c->stack_max = PL_stack_max;
423	c->tmps_stack = PL_tmps_stack;	411	c->tmps_stack = PL_tmps_stack;
424	c->tmps_floor = PL_tmps_floor;	412	c->tmps_floor = PL_tmps_floor;
425	c->tmps_ix = PL_tmps_ix;	413	c->tmps_ix = PL_tmps_ix;
…		…
431	c->scopestack_ix = PL_scopestack_ix;	419	c->scopestack_ix = PL_scopestack_ix;
432	c->scopestack_max = PL_scopestack_max;	420	c->scopestack_max = PL_scopestack_max;
433	c->savestack = PL_savestack;	421	c->savestack = PL_savestack;
434	c->savestack_ix = PL_savestack_ix;	422	c->savestack_ix = PL_savestack_ix;
435	c->savestack_max = PL_savestack_max;	423	c->savestack_max = PL_savestack_max;
		424	#if PERL_VERSION < 9
436	c->retstack = PL_retstack;	425	c->retstack = PL_retstack;
437	c->retstack_ix = PL_retstack_ix;	426	c->retstack_ix = PL_retstack_ix;
438	c->retstack_max = PL_retstack_max;	427	c->retstack_max = PL_retstack_max;
		428	#endif
		429	c->curpm = PL_curpm;
439	c->curcop = PL_curcop;	430	c->curcop = PL_curcop;
440	c->top_env = PL_top_env;	431	c->top_env = PL_top_env;
441	}	432	}
442		433
443	/*	434	/*
444	* allocate various perl stacks. This is an exact copy	435	* allocate various perl stacks. This is an exact copy
445	* of perl.c:init_stacks, except that it uses less memory	436	* of perl.c:init_stacks, except that it uses less memory
446	* on the assumption that coroutines do not usually need	437	* on the (sometimes correct) assumption that coroutines do
447	* a lot of stackspace.	438	* not usually need a lot of stackspace.
448	*/	439	*/
449	STATIC void	440	static void
450	coro_init_stacks (pTHX)	441	coro_init_stacks (pTHX)
451	{	442	{
		443	LOCK;
		444
452	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
453	PL_curstackinfo->si_type = PERLSI_MAIN;	446	PL_curstackinfo->si_type = PERLSI_MAIN;
454	PL_curstack = PL_curstackinfo->si_stack;	447	PL_curstack = PL_curstackinfo->si_stack;
455	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
456		449
…		…
465		458
466	New(54,PL_markstack,16,I32);	459	New(54,PL_markstack,16,I32);
467	PL_markstack_ptr = PL_markstack;	460	PL_markstack_ptr = PL_markstack;
468	PL_markstack_max = PL_markstack + 16;	461	PL_markstack_max = PL_markstack + 16;
469		462
		463	#ifdef SET_MARK_OFFSET
470	SET_MARK_OFFSET;	464	SET_MARK_OFFSET;
		465	#endif
471		466
472	New(54,PL_scopestack,16,I32);	467	New(54,PL_scopestack,16,I32);
473	PL_scopestack_ix = 0;	468	PL_scopestack_ix = 0;
474	PL_scopestack_max = 16;	469	PL_scopestack_max = 16;
475		470
476	New(54,PL_savestack,96,ANY);	471	New(54,PL_savestack,96,ANY);
477	PL_savestack_ix = 0;	472	PL_savestack_ix = 0;
478	PL_savestack_max = 96;	473	PL_savestack_max = 96;
479		474
		475	#if PERL_VERSION < 9
480	New(54,PL_retstack,8,OP*);	476	New(54,PL_retstack,8,OP*);
481	PL_retstack_ix = 0;	477	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	478	PL_retstack_max = 8;
		479	#endif
		480
		481	UNLOCK;
483	}	482	}
484		483
485	/*	484	/*
486	* destroy the stacks, the callchain etc...	485	* destroy the stacks, the callchain etc...
487	* still there is a memleak of 128 bytes...
488	*/	486	*/
489	STATIC void	487	static void
490	destroy_stacks(pTHX)	488	destroy_stacks(pTHX)
491	{	489	{
492	int destruct = PL_main_cv != Nullcv;	490	if (!IN_DESTRUCT)
493
494	if (destruct)
495	{	491	{
496	/* is this ugly, I ask? */	492	/* is this ugly, I ask? */
497	while (PL_scopestack_ix)	493	LEAVE_SCOPE (0);
498	LEAVE;
499		494
500	/* sure it is, but more important: is it correct?? :/ */	495	/* 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;	496	FREETMPS;
		497
		498	/POPSTACK_TO (PL_mainstack);//D//use/
503	}	499	}
504		500
505	while (PL_curstackinfo->si_next)	501	while (PL_curstackinfo->si_next)
506	PL_curstackinfo = PL_curstackinfo->si_next;	502	PL_curstackinfo = PL_curstackinfo->si_next;
507		503
508	while (PL_curstackinfo)	504	while (PL_curstackinfo)
509	{	505	{
510	PERL_SI *p = PL_curstackinfo->si_prev;	506	PERL_SI *p = PL_curstackinfo->si_prev;
511		507
512	{	508	{ /D//remove/
513	dSP;	509	dSP;
514	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
515	PUTBACK; /* possibly superfluous */	511	PUTBACK; /* possibly superfluous */
516	}	512	}
517		513
518	if (destruct)	514	if (!IN_DESTRUCT)
519	{	515	{
520	dounwind(-1);	516	dounwind (-1);/D//remove/
521	SvREFCNT_dec(PL_curstackinfo->si_stack);	517	SvREFCNT_dec (PL_curstackinfo->si_stack);
522	}	518	}
523		519
524	Safefree(PL_curstackinfo->si_cxstack);	520	Safefree (PL_curstackinfo->si_cxstack);
525	Safefree(PL_curstackinfo);	521	Safefree (PL_curstackinfo);
526	PL_curstackinfo = p;	522	PL_curstackinfo = p;
527	}	523	}
528		524
529	Safefree(PL_tmps_stack);	525	Safefree (PL_tmps_stack);
530	Safefree(PL_markstack);	526	Safefree (PL_markstack);
531	Safefree(PL_scopestack);	527	Safefree (PL_scopestack);
532	Safefree(PL_savestack);	528	Safefree (PL_savestack);
		529	#if PERL_VERSION < 9
533	Safefree(PL_retstack);	530	Safefree (PL_retstack);
		531	#endif
534	}	532	}
535		533
536	static void	534	static void
537	allocate_stack (Coro__State ctx, int alloc)	535	allocate_stack (Coro__State ctx, int alloc)
538	{	536	{
…		…
541	New (0, stack, 1, coro_stack);	539	New (0, stack, 1, coro_stack);
542		540
543	stack->refcnt = 1;	541	stack->refcnt = 1;
544	stack->usecnt = 1;	542	stack->usecnt = 1;
545	stack->gencnt = ctx->gencnt = 0;	543	stack->gencnt = ctx->gencnt = 0;
		544
546	if (alloc)	545	if (alloc)
547	{	546	{
548	#ifdef HAVE_MMAP	547	#if HAVE_MMAP
549	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	548	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);	549	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
551	if (stack->sptr == (void *)-1)	550	if (stack->sptr != (void *)-1)
552	#endif
553	{	551	{
554	/FIXME//D//* reasonable stack size! */	552	# if STACKGUARD
		553	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		554	# endif
		555	}
		556	else
		557	#endif
		558	{
555	stack->ssize = -4096 * sizeof (long);	559	stack->ssize = - (STACKSIZE * (long)sizeof (long));
556	New (0, stack->sptr, 4096, long);	560	New (0, stack->sptr, STACKSIZE, long);
557	}	561	}
558	}	562	}
559	else	563	else
560	stack->sptr = 0;	564	stack->sptr = 0;
561		565
…		…
575	{	579	{
576	#ifdef HAVE_MMAP	580	#ifdef HAVE_MMAP
577	if (stack->ssize > 0 && stack->sptr)	581	if (stack->ssize > 0 && stack->sptr)
578	munmap (stack->sptr, stack->ssize);	582	munmap (stack->sptr, stack->ssize);
579	else	583	else
580	#else	584	#endif
581	Safefree (stack->sptr);	585	Safefree (stack->sptr);
582	#endif	586
583	Safefree (stack);	587	Safefree (stack);
584	}	588	}
585	else if (ctx->gencnt == stack->gencnt)	589	else if (ctx->gencnt == stack->gencnt)
586	--stack->usecnt;	590	--stack->usecnt;
587	}	591	}
…		…
591	setup_coro (void *arg)	595	setup_coro (void *arg)
592	{	596	{
593	/*	597	/*
594	* emulate part of the perl startup here.	598	* emulate part of the perl startup here.
595	*/	599	*/
		600	dTHX;
596	dSP;	601	dSP;
597	Coro__State ctx = (Coro__State)arg;	602	Coro__State ctx = (Coro__State)arg;
598	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	603	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
599		604
600	coro_init_stacks (aTHX);	605	coro_init_stacks (aTHX);
601	/PL_curcop = 0;/	606	/PL_curcop = 0;/
602	/PL_in_eval = PL_in_eval;/ /* inherit */	607	/PL_in_eval = PL_in_eval;/ /* inherit */
603	SvREFCNT_dec (GvAV (PL_defgv));	608	SvREFCNT_dec (GvAV (PL_defgv));
604	GvAV (PL_defgv) = ctx->args;	609	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
605		610
606	SPAGAIN;	611	SPAGAIN;
607		612
608	if (ctx->stack)	613	if (ctx->stack)
609	{	614	{
…		…
636	* that doesn't matter, though, since it is only	641	* that doesn't matter, though, since it is only
637	* pp_nextstate and we never return...	642	* pp_nextstate and we never return...
638	* ah yes, and I don't care anyways ;)	643	* ah yes, and I don't care anyways ;)
639	*/	644	*/
640	PUTBACK;	645	PUTBACK;
641	PL_op = pp_entersub();	646	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
642	SPAGAIN;	647	SPAGAIN;
643		648
644	ENTER; /* necessary e.g. for dounwind */	649	ENTER; /* necessary e.g. for dounwind */
645	}	650	}
646	}	651	}
…		…
649	continue_coro (void *arg)	654	continue_coro (void *arg)
650	{	655	{
651	/*	656	/*
652	* this is a _very_ stripped down perl interpreter ;)	657	* this is a _very_ stripped down perl interpreter ;)
653	*/	658	*/
		659	dTHX;
654	Coro__State ctx = (Coro__State)arg;	660	Coro__State ctx = (Coro__State)arg;
655	JMPENV coro_start_env;
656		661
657	/* same as JMPENV_BOOTSTRAP */
658	Zero(&coro_start_env, 1, JMPENV);
659	coro_start_env.je_ret = -1;
660	coro_start_env.je_mustcatch = TRUE;
661	PL_top_env = &coro_start_env;	662	PL_top_env = &ctx->start_env;
662		663
663	ctx->cursp = 0;	664	ctx->cursp = 0;
664	PL_op = PL_op->op_next;	665	PL_op = PL_op->op_next;
665	CALLRUNOPS(aTHX);	666	CALLRUNOPS(aTHX);
666		667
667	abort ();	668	abort ();
668	}	669	}
669		670
670	STATIC void	671	static void
671	transfer(pTHX_ struct coro prev, struct coro next, int flags)	672	transfer (pTHX_ struct coro prev, struct coro next, int flags)
672	{	673	{
673	dSTACKLEVEL;	674	dSTACKLEVEL;
674	static struct coro *xnext;
675		675
676	if (prev != next)	676	if (prev != next)
677	{	677	{
678	xnext = next;
679
680	if (next->mainstack)	678	if (next->mainstack)
681	{	679	{
		680	LOCK;
682	SAVE (prev, flags);	681	SAVE (prev, flags);
683	LOAD (next);	682	LOAD (next);
		683	UNLOCK;
684		684
685	/* mark this state as in-use */	685	/* mark this state as in-use */
686	next->mainstack = 0;	686	next->mainstack = 0;
687	next->tmps_ix = -2;	687	next->tmps_ix = -2;
688		688
…		…
707	continue_coro, (void *)next,	707	continue_coro, (void *)next,
708	next->stack->sptr, labs (next->stack->ssize));	708	next->stack->sptr, labs (next->stack->ssize));
709	}	709	}
710		710
711	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	711	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		712	prev->cursp = stacklevel;
712	/* don't add any code here */	713	/* don't add any code here */
713	}	714	}
714		715	else
		716	next->cursp = stacklevel;
715	}	717	}
716	else if (next->tmps_ix == -2)	718	else if (next->tmps_ix == -2)
717	croak ("tried to transfer to running coroutine");	719	croak ("tried to transfer to running coroutine");
718	else	720	else
719	{	721	{
		722	LOCK;
720	SAVE (prev, -1); /* first get rid of the old state */	723	SAVE (prev, -1); /* first get rid of the old state */
		724	UNLOCK;
721		725
722	if (flags & TRANSFER_SAVE_CCTXT)	726	if (flags & TRANSFER_SAVE_CCTXT)
723	{	727	{
724	if (!prev->stack)	728	if (!prev->stack)
725	allocate_stack (prev, 0);	729	allocate_stack (prev, 0);
726		730
727	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
728	{	732	{
		733	PL_top_env = &next->start_env;
		734
729	setup_coro (next);	735	setup_coro (next);
		736	next->cursp = stacklevel;
730		737
731	prev->stack->refcnt++;	738	prev->stack->refcnt++;
732	prev->stack->usecnt++;	739	prev->stack->usecnt++;
733	next->stack = prev->stack;	740	next->stack = prev->stack;
734	next->gencnt = prev->gencnt;	741	next->gencnt = prev->gencnt;
735	}	742	}
736	else	743	else
737	{	744	{
		745	assert (!next->stack);
738	allocate_stack (next, 1);	746	allocate_stack (next, 1);
739	coro_create (&(next->stack->cctx),	747	coro_create (&(next->stack->cctx),
740	setup_coro, (void *)next,	748	setup_coro, (void *)next,
741	next->stack->sptr, labs (next->stack->ssize));	749	next->stack->sptr, labs (next->stack->ssize));
742	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		751	prev->cursp = stacklevel;
743	/* don't add any code here */	752	/* don't add any code here */
744	}	753	}
745	}	754	}
746	else	755	else
		756	{
747	setup_coro (next);	757	setup_coro (next);
		758	next->cursp = stacklevel;
		759	}
748	}	760	}
749	}	761	}
750		762
751	/*	763	LOCK;
752	* xnext is now either prev or next, depending on wether	764	if (coro_mortal)
753	* we switched the c stack or not. that's why i use a global
754	* variable, that should become thread-specific at one point.
755	*/
756	xnext->cursp = stacklevel;
757	}
758
759	static struct coro *
760	sv_to_coro (SV arg, const char funcname, const char *varname)
761	{
762	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
763	{	765	{
764	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	766	SvREFCNT_dec (coro_mortal);
765		767	coro_mortal = 0;
766	if (!he)
767	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
768
769	arg = HeVAL(he);
770	}	768	}
771		769	UNLOCK;
		770	}
		771
		772	#define SV_CORO(sv,func) \
		773	do { \
		774	if (SvROK (sv)) \
		775	sv = SvRV (sv); \
		776	\
		777	if (SvTYPE (sv) == SVt_PVHV) \
		778	{ \
		779	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		780	\
		781	if (!he) \
		782	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		783	\
		784	(sv) = SvRV (HeVAL(he)); \
		785	} \
		786	\
772	/* must also be changed inside Coro::Cont::yield */	787	/* must also be changed inside Coro::Cont::yield */ \
773	if (SvROK(arg) && SvOBJECT(SvRV(arg))	788	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
774	&& SvSTASH(SvRV(arg)) == coro_state_stash)
775	return (struct coro ) SvIV((SV)SvRV(arg));
776
777	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	789	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
778	/NORETURN/	790	\
779	}	791	} while(0)
		792
		793	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
780		794
781	static void	795	static void
782	api_transfer(pTHX_ SV prev, SV next, int flags)	796	api_transfer(pTHX_ SV prev, SV next, int flags)
783	{	797	{
784	transfer(aTHX_	798	SV_CORO (prev, "Coro::transfer");
785	sv_to_coro (prev, "Coro::transfer", "prev"),	799	SV_CORO (next, "Coro::transfer");
786	sv_to_coro (next, "Coro::transfer", "next"),	800
787	flags);	801	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
788	}	802	}
789		803
790	/ Coro ******************************************************************/	804	/ Coro ******************************************************************/
791		805
792	#define PRIO_MAX 3	806	#define PRIO_MAX 3
…		…
800	static GV coro_current, coro_idle;	814	static GV coro_current, coro_idle;
801	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	815	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
802	static int coro_nready;	816	static int coro_nready;
803		817
804	static void	818	static void
805	coro_enq (SV *sv)	819	coro_enq (pTHX_ SV *sv)
806	{	820	{
807	if (SvROK (sv))	821	SV **xprio;
808	{	822	int prio;
809	SV *hv = SvRV (sv);	823
810	if (SvTYPE (hv) == SVt_PVHV)	824	if (SvTYPE (sv) != SVt_PVHV)
811	{
812	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);
813	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
814
815	prio = prio > PRIO_MAX ? PRIO_MAX
816	: prio < PRIO_MIN ? PRIO_MIN
817	: prio;
818
819	av_push (coro_ready [prio - PRIO_MIN], sv);
820	coro_nready++;
821
822	return;
823	}
824	}
825
826	croak ("Coro::ready tried to enqueue something that is not a coroutine");	825	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		826
		827	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
		828	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		829
		830	prio = prio > PRIO_MAX ? PRIO_MAX
		831	: prio < PRIO_MIN ? PRIO_MIN
		832	: prio;
		833
		834	av_push (coro_ready [prio - PRIO_MIN], sv);
		835	coro_nready++;
827	}	836	}
828		837
829	static SV *	838	static SV *
830	coro_deq (int min_prio)	839	coro_deq (pTHX_ int min_prio)
831	{	840	{
832	int prio = PRIO_MAX - PRIO_MIN;	841	int prio = PRIO_MAX - PRIO_MIN;
833		842
834	min_prio -= PRIO_MIN;	843	min_prio -= PRIO_MIN;
835	if (min_prio < 0)	844	if (min_prio < 0)
…		…
846	}	855	}
847		856
848	static void	857	static void
849	api_ready (SV *coro)	858	api_ready (SV *coro)
850	{	859	{
		860	dTHX;
		861
		862	if (SvROK (coro))
		863	coro = SvRV (coro);
		864
		865	LOCK;
851	coro_enq (SvREFCNT_inc (coro));	866	coro_enq (aTHX_ SvREFCNT_inc (coro));
		867	UNLOCK;
852	}	868	}
853		869
854	static void	870	static void
855	api_schedule (int cede)	871	api_schedule (void)
856	{	872	{
		873	dTHX;
		874
857	SV prev, next;	875	SV prev, next;
858		876
		877	LOCK;
		878
859	prev = GvSV (coro_current);	879	prev = SvRV (GvSV (coro_current));
860
861	if (cede)
862	coro_enq (SvREFCNT_inc (prev));
863
864	next = coro_deq (PRIO_MIN);	880	next = coro_deq (aTHX_ PRIO_MIN);
865		881
866	if (!next)	882	if (!next)
867	next = SvREFCNT_inc (GvSV (coro_idle));	883	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
868		884
869	GvSV (coro_current) = SvREFCNT_inc (next);	885	/* free this only after the transfer */
870	transfer (aTHX_	886	coro_mortal = prev;
871	sv_to_coro (prev, "Coro::schedule", "current coroutine"),	887	SV_CORO (prev, "Coro::schedule");
872	sv_to_coro (next, "Coro::schedule", "next coroutine"),	888
		889	SvRV (GvSV (coro_current)) = next;
		890
		891	SV_CORO (next, "Coro::schedule");
		892
		893	UNLOCK;
		894
		895	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
873	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	896	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
874	SvREFCNT_dec (next);	897	}
875	SvREFCNT_dec (prev);	898
		899	static void
		900	api_cede (void)
		901	{
		902	dTHX;
		903
		904	LOCK;
		905	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		906	UNLOCK;
		907
		908	api_schedule ();
876	}	909	}
877		910
878	MODULE = Coro::State PACKAGE = Coro::State	911	MODULE = Coro::State PACKAGE = Coro::State
879		912
880	PROTOTYPES: ENABLE	913	PROTOTYPES: ENABLE
881		914
882	BOOT:	915	BOOT:
883	{ /* {} necessary for stoopid perl-5.6.x */	916	{ /* {} necessary for stoopid perl-5.6.x */
		917	#ifdef USE_ITHREADS
		918	MUTEX_INIT (&coro_mutex);
		919	#endif
		920	BOOT_PAGESIZE;
		921
884	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	922	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
885	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	923	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
886	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	924	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
887		925
888	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	926	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
889	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	927	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
890	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	928	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
891	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	929	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
892
893	if (!padlist_cache)
894	padlist_cache = newHV ();
895		930
896	main_mainstack = PL_mainstack;	931	main_mainstack = PL_mainstack;
897		932
898	coroapi.ver = CORO_API_VERSION;	933	coroapi.ver = CORO_API_VERSION;
899	coroapi.transfer = api_transfer;	934	coroapi.transfer = api_transfer;
…		…
907	Coro__State coro;	942	Coro__State coro;
908		943
909	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	944	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
910	croak ("Coro::State::_newprocess expects an arrayref");	945	croak ("Coro::State::_newprocess expects an arrayref");
911		946
912	New (0, coro, 1, struct coro);	947	Newz (0, coro, 1, struct coro);
913		948
914	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	949	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
915	coro->mainstack = 0; /* actual work is done inside transfer */	950	/coro->mainstack = 0; //actual work is done inside transfer /
916	coro->stack = 0;	951	/coro->stack = 0;/
		952
		953	/* same as JMPENV_BOOTSTRAP */
		954	/* we might be able to recycle start_env, but safe is safe */
		955	/Zero(&coro->start_env, 1, JMPENV);/
		956	coro->start_env.je_ret = -1;
		957	coro->start_env.je_mustcatch = TRUE;
917		958
918	RETVAL = coro;	959	RETVAL = coro;
919	OUTPUT:	960	OUTPUT:
920	RETVAL	961	RETVAL
921		962
922	void	963	void
923	transfer(prev, next, flags)	964	transfer(prev, next, flags)
924	Coro::State_or_hashref prev	965	SV *prev
925	Coro::State_or_hashref next	966	SV *next
926	int flags	967	int flags
927	PROTOTYPE: @	968	PROTOTYPE: @
928	CODE:	969	CODE:
929	PUTBACK;	970	PUTBACK;
		971	SV_CORO (next, "Coro::transfer");
		972	SV_CORO (prev, "Coro::transfer");
930	transfer (aTHX_ prev, next, flags);	973	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
931	SPAGAIN;	974	SPAGAIN;
932		975
933	void	976	void
934	DESTROY(coro)	977	DESTROY(coro)
935	Coro::State coro	978	Coro::State coro
…		…
938	if (coro->mainstack && coro->mainstack != main_mainstack)	981	if (coro->mainstack && coro->mainstack != main_mainstack)
939	{	982	{
940	struct coro temp;	983	struct coro temp;
941		984
942	PUTBACK;	985	PUTBACK;
943	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	986	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
944	LOAD(aTHX_ coro);	987	LOAD (aTHX_ coro);
945	SPAGAIN;	988	SPAGAIN;
946		989
947	destroy_stacks (aTHX);	990	destroy_stacks (aTHX);
948		991
949	LOAD((&temp)); /* this will get rid of defsv etc.. */	992	LOAD ((&temp)); /* this will get rid of defsv etc.. */
950	SPAGAIN;	993	SPAGAIN;
951		994
952	coro->mainstack = 0;	995	coro->mainstack = 0;
953	}	996	}
954		997
955	deallocate_stack (coro);	998	deallocate_stack (coro);
956		999	SvREFCNT_dec (coro->args);
957	Safefree (coro);	1000	Safefree (coro);
958
959	void
960	flush()
961	CODE:
962	#ifdef MAY_FLUSH
963	flush_padlist_cache ();
964	#endif
965		1001
966	void	1002	void
967	_exit(code)	1003	_exit(code)
968	int code	1004	int code
969	PROTOTYPE: $	1005	PROTOTYPE: $
970	CODE:	1006	CODE:
971	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
972	_exit (code);	1007	_exit (code);
973	#else
974	signal (SIGTERM, SIG_DFL);
975	raise (SIGTERM);
976	exit (code);
977	#endif
978		1008
979	MODULE = Coro::State PACKAGE = Coro::Cont	1009	MODULE = Coro::State PACKAGE = Coro::Cont
980		1010
981	# this is slightly dirty (should expose a c-level api)	1011	# this is slightly dirty (should expose a c-level api)
982		1012
983	void	1013	void
984	yield(...)	1014	yield(...)
985	PROTOTYPE: @	1015	PROTOTYPE: @
986	CODE:	1016	CODE:
987	static SV *returnstk;	1017	SV *yieldstack;
988	SV *sv;	1018	SV *sv;
989	AV *defav = GvAV (PL_defgv);	1019	AV *defav = GvAV (PL_defgv);
990	struct coro prev, next;	1020	struct coro prev, next;
991		1021
992	if (!returnstk)	1022	yieldstack = *hv_fetch (
993	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1023	(HV *)SvRV (GvSV (coro_current)),
		1024	"yieldstack", sizeof ("yieldstack") - 1,
		1025	0
		1026	);
994		1027
995	/* set up @_ -- ugly */	1028	/* set up @_ -- ugly */
996	av_clear (defav);	1029	av_clear (defav);
997	av_fill (defav, items - 1);	1030	av_fill (defav, items - 1);
998	while (items--)	1031	while (items--)
999	av_store (defav, items, SvREFCNT_inc (ST(items)));	1032	av_store (defav, items, SvREFCNT_inc (ST(items)));
1000		1033
1001	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1002	sv = av_pop ((AV *)SvRV (returnstk));	1034	sv = av_pop ((AV *)SvRV (yieldstack));
1003	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1035	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1004	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1036	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1005	SvREFCNT_dec (sv);	1037	SvREFCNT_dec (sv);
1006		1038
1007	transfer(aTHX_ prev, next, 0);	1039	transfer (aTHX_ prev, next, 0);
1008		1040
1009	MODULE = Coro::State PACKAGE = Coro	1041	MODULE = Coro::State PACKAGE = Coro
1010		1042
1011	# this is slightly dirty (should expose a c-level api)	1043	# this is slightly dirty (should expose a c-level api)
1012		1044
…		…
1030		1062
1031	{	1063	{
1032	SV *sv = perl_get_sv("Coro::API", 1);	1064	SV *sv = perl_get_sv("Coro::API", 1);
1033		1065
1034	coroapi.schedule = api_schedule;	1066	coroapi.schedule = api_schedule;
		1067	coroapi.cede = api_cede;
1035	coroapi.ready = api_ready;	1068	coroapi.ready = api_ready;
1036	coroapi.nready = &coro_nready;	1069	coroapi.nready = &coro_nready;
1037	coroapi.current = coro_current;	1070	coroapi.current = coro_current;
1038		1071
1039	GCoroAPI = &coroapi;	1072	GCoroAPI = &coroapi;
1040	sv_setiv(sv, (IV)&coroapi);	1073	sv_setiv(sv, (IV)&coroapi);
1041	SvREADONLY_on(sv);	1074	SvREADONLY_on(sv);
1042	}	1075	}
1043	}	1076	}
1044		1077
		1078	#if !PERL_MICRO
		1079
1045	void	1080	void
1046	ready(self)	1081	ready(self)
1047	SV * self	1082	SV * self
		1083	PROTOTYPE: $
1048	CODE:	1084	CODE:
1049	api_ready (self);	1085	api_ready (self);
		1086
		1087	#endif
1050		1088
1051	int	1089	int
1052	nready(...)	1090	nready(...)
1053	PROTOTYPE:	1091	PROTOTYPE:
1054	CODE:	1092	CODE:
…		…
1057	RETVAL	1095	RETVAL
1058		1096
1059	void	1097	void
1060	schedule(...)	1098	schedule(...)
1061	PROTOTYPE:	1099	PROTOTYPE:
1062	ALIAS:
1063	cede = 1
1064	CODE:	1100	CODE:
1065	api_schedule (ix);	1101	api_schedule ();
1066		1102
		1103	void
		1104	cede(...)
		1105	PROTOTYPE:
		1106	CODE:
		1107	api_cede ();
		1108
		1109	# and these are hacks
		1110	SV *
		1111	_aio_get_state ()
		1112	CODE:
		1113	{
		1114	struct {
		1115	int errorno;
		1116	int laststype;
		1117	int laststatval;
		1118	Stat_t statcache;
		1119	} data;
		1120
		1121	data.errorno = errno;
		1122	data.laststype = PL_laststype;
		1123	data.laststatval = PL_laststatval;
		1124	data.statcache = PL_statcache;
		1125
		1126	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1127	}
		1128	OUTPUT:
		1129	RETVAL
		1130
		1131	void
		1132	_aio_set_state (char *data_)
		1133	PROTOTYPE: $
		1134	CODE:
		1135	{
		1136	struct {
		1137	int errorno;
		1138	int laststype;
		1139	int laststatval;
		1140	Stat_t statcache;
		1141	} data = (void )data_;
		1142
		1143	errno = data->errorno;
		1144	PL_laststype = data->laststype;
		1145	PL_laststatval = data->laststatval;
		1146	PL_statcache = data->statcache;
		1147	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.33 by root, Sun Aug 26 21:44:20 2001 UTC vs. Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.33 by root, Sun Aug 26 21:44:20 2001 UTC vs.
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC