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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.18 by root, Thu Jul 26 03:46:15 2001 UTC vs.
Revision 1.78 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"
		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>
10	# ifndef MAP_ANON
11	# ifdef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
12	# define MAP_ANON MAP_ANONYMOUS	46	# ifdef MAP_ANON
		47	# define MAP_ANONYMOUS MAP_ANON
13	# else	48	# else
14	# undef HAVE_MMAP	49	# undef HAVE_MMAP
15	# endif	50	# endif
16	# 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
17	#endif	59	# endif
18
19	#define MAY_FLUSH /* increases codesize */
20
21	/* perl-related */
22	#define TRANSFER_SAVE_DEFAV 0x00000001
23	#define TRANSFER_SAVE_DEFSV 0x00000002
24	#define TRANSFER_SAVE_ERRSV 0x00000004
25	/* c-related */
26	#define TRANSFER_SAVE_CCTXT 0x00000008
27	#ifdef CORO_LAZY_STACK
28	# define TRANSFER_LAZY_STACK 0x00000010
29	#else
30	# define TRANSFER_LAZY_STACK 0x00000000
31	#endif	60	#endif
32
33	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
34	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
35		61
36	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
37	#define UCORO_STATE "_coro_state"	63	#define UCORO_STATE "_coro_state"
38		64
39	/* The next macro should delcare a variable stacklevel that contains and approximation	65	/* The next macro should declare a variable stacklevel that contains and approximation
40	* to the current C stack pointer. It's property is that it changes with each call	66	* to the current C stack pointer. Its property is that it changes with each call
41	* and should be unique. */	67	* and should be unique. */
42	#define dSTACKLEVEL void *stacklevel = &stacklevel	68	#define dSTACKLEVEL void *stacklevel = &stacklevel
43		69
		70	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		71
44	#define labs(l) ((l) >= 0 ? (l) : -(l))	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 */
45		91
46	/* 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... */
47	typedef struct {	93	typedef struct {
48	int refcnt; /* pointer reference counter */	94	int refcnt; /* pointer reference counter */
49	int usecnt; /* shared by how many coroutines */	95	int usecnt; /* shared by how many coroutines */
54	void *sptr;	100	void *sptr;
55	long ssize; /* positive == mmap, otherwise malloc */	101	long ssize; /* positive == mmap, otherwise malloc */
56	} coro_stack;	102	} coro_stack;
57		103
58	struct coro {	104	struct coro {
		105	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		106	JMPENV start_env;
		107
59	/* the optional C context */	108	/* the optional C context */
60	coro_stack *stack;	109	coro_stack *stack;
61	void *cursp;	110	void *cursp;
62	int gencnt;	111	int gencnt;
63		112
…		…
66	SV *defsv;	115	SV *defsv;
67	SV *errsv;	116	SV *errsv;
68		117
69	/* saved global state not related to stacks */	118	/* saved global state not related to stacks */
70	U8 dowarn;	119	U8 dowarn;
		120	I32 in_eval;
71		121
72	/* the stacks and related info (callchain etc..) */	122	/* the stacks and related info (callchain etc..) */
73	PERL_SI *curstackinfo;	123	PERL_SI *curstackinfo;
74	AV *curstack;	124	AV *curstack;
75	AV *mainstack;	125	AV *mainstack;
76	SV **stack_sp;	126	SV **stack_sp;
77	OP *op;	127	OP *op;
78	SV **curpad;	128	SV **curpad;
		129	AV *comppad;
		130	CV *compcv;
79	SV **stack_base;	131	SV **stack_base;
80	SV **stack_max;	132	SV **stack_max;
81	SV **tmps_stack;	133	SV **tmps_stack;
82	I32 tmps_floor;	134	I32 tmps_floor;
83	I32 tmps_ix;	135	I32 tmps_ix;
…		…
92	I32 savestack_ix;	144	I32 savestack_ix;
93	I32 savestack_max;	145	I32 savestack_max;
94	OP **retstack;	146	OP **retstack;
95	I32 retstack_ix;	147	I32 retstack_ix;
96	I32 retstack_max;	148	I32 retstack_max;
		149	PMOP *curpm;
97	COP *curcop;	150	COP *curcop;
98	JMPENV start_env;
99	JMPENV *top_env;	151	JMPENV *top_env;
100		152
101	/* data associated with this coroutine (initial args) */	153	/* data associated with this coroutine (initial args) */
102	AV *args;	154	AV *args;
103	};	155	};
104		156
105	typedef struct coro *Coro__State;	157	typedef struct coro *Coro__State;
106	typedef struct coro *Coro__State_or_hashref;	158	typedef struct coro *Coro__State_or_hashref;
107		159
108	static AV main_mainstack; / used to differentiate between $main and others */	160	static AV *
109	static HV *coro_state_stash;	161	coro_clone_padlist (pTHX_ CV *cv)
110	static SV *ucoro_state_sv;
111	static U32 ucoro_state_hash;
112	static HV *padlist_cache;
113
114	/* mostly copied from op.c:cv_clone2 */
115	STATIC AV *
116	clone_padlist (AV *protopadlist)
117	{	162	{
118	AV *av;	163	AV *padlist = CvPADLIST (cv);
119	I32 ix;
120	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
121	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
122	SV **pname = AvARRAY (protopad_name);
123	SV **ppad = AvARRAY (protopad);
124	I32 fname = AvFILLp (protopad_name);
125	I32 fpad = AvFILLp (protopad);
126	AV newpadlist, newpad_name, *newpad;	164	AV newpadlist, newpad;
127	SV **npad;
128
129	newpad_name = newAV ();
130	for (ix = fname; ix >= 0; ix--)
131	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
132
133	newpad = newAV ();
134	av_fill (newpad, AvFILLp (protopad));
135	npad = AvARRAY (newpad);
136		165
137	newpadlist = newAV ();	166	newpadlist = newAV ();
138	AvREAL_off (newpadlist);	167	AvREAL_off (newpadlist);
139	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)));
140	av_store (newpadlist, 1, (SV *) newpad);	173	av_store (newpadlist, 1, (SV *)newpad);
141		174
142	av = newAV (); /* will be @_ */	175	return newpadlist;
143	av_extend (av, 0);	176	}
144	av_store (newpad, 0, (SV *) av);
145	AvFLAGS (av) = AVf_REIFY;
146		177
147	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))
148	{	183	{
149	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	184	I32 i = AvFILLp (padlist);
150	if (namesv && namesv != &PL_sv_undef)	185	while (i >= 0)
151	{	186	{
152	char name = SvPVX (namesv); / XXX */	187	SV **svp = av_fetch (padlist, i--, FALSE);
153	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	188	if (svp)
154	{ /* lexical from outside? */
155	npad[ix] = SvREFCNT_inc (ppad[ix]);
156	}	189	{
157	else
158	{ /* our own lexical */
159	SV *sv;	190	SV *sv;
160	if (*name == '&')	191	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
161	sv = SvREFCNT_inc (ppad[ix]);	192	SvREFCNT_dec (sv);
162	else if (*name == '@')	193
163	sv = (SV *) newAV ();	194	SvREFCNT_dec (*svp);
164	else if (*name == '%')
165	sv = (SV *) newHV ();
166	else
167	sv = NEWSV (0, 0);
168	if (!SvPADBUSY (sv))
169	SvPADMY_on (sv);
170	npad[ix] = sv;
171	}	195	}
172	}	196	}
173	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	197
174	{	198	SvREFCNT_dec ((SV*)padlist);
175	npad[ix] = SvREFCNT_inc (ppad[ix]);
176	}
177	else
178	{
179	SV *sv = NEWSV (0, 0);
180	SvPADTMP_on (sv);
181	npad[ix] = sv;
182	}
183	}	199	}
		200	}
184		201
185	#if 0 /* return -ENOTUNDERSTOOD */	202	static int
186	/* 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;
187		207
188	for (ix = fpad; ix > 0; ix--) {	208	/* casting is fun. */
189	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
190	if (namesv	210	free_padlist (aTHX_ padlist);
191	&& namesv != &PL_sv_undef	211
192	&& !(SvFLAGS(namesv) & SVf_FAKE)	212	SvREFCNT_dec (av);
193	&& *SvPVX(namesv) == '&'	213
194	&& CvCLONE(ppad[ix]))	214	return 0;
195	{	215	}
196	CV kid = cv_clone((CV)ppad[ix]);	216
197	SvREFCNT_dec(ppad[ix]);	217	#define PERL_MAGIC_coro PERL_MAGIC_ext
198	CvCLONE_on(kid);	218
199	SvPADMY_on(kid);	219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
200	npad[ix] = (SV*)kid;	220
201	}	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 ();
202	}	254	}
203	#endif
204		255
205	return newpadlist;
206	}
207
208	#ifdef MAY_FLUSH
209	STATIC AV *
210	free_padlist (AV *padlist)
211	{
212	/* may be during global destruction */
213	if (SvREFCNT(padlist))
214	{
215	I32 i = AvFILLp(padlist);
216	while (i >= 0)
217	{
218	SV **svp = av_fetch(padlist, i--, FALSE);
219	SV sv = svp ? svp : Nullsv;
220	if (sv)
221	SvREFCNT_dec(sv);
222	}
223
224	SvREFCNT_dec((SV*)padlist);
225	}
226	}
227	#endif
228
229	/* the next two functions merely cache the padlists */
230	STATIC void
231	get_padlist (CV *cv)
232	{
233	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
234
235	if (he && AvFILLp ((AV )he) >= 0)
236	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
237	else
238	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
239	}
240
241	STATIC void
242	put_padlist (CV *cv)
243	{
244	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
245
246	if (SvTYPE (*he) != SVt_PVAV)
247	{
248	SvREFCNT_dec (*he);
249	he = (SV )newAV ();
250	}
251
252	av_push ((AV )he, (SV *)CvPADLIST (cv));	256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
253	}	257	}
254
255	#ifdef MAY_FLUSH
256	STATIC void
257	flush_padlist_cache ()
258	{
259	HV *hv = padlist_cache;
260	padlist_cache = newHV ();
261
262	if (hv_iterinit (hv))
263	{
264	HE *he;
265	AV *padlist;
266
267	while (!!(he = hv_iternext (hv)))
268	{
269	AV av = (AV )HeVAL(he);
270
271	/* casting is fun. */
272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
273	free_padlist (padlist);
274	}
275	}
276
277	SvREFCNT_dec (hv);
278	}
279	#endif
280		258
281	#define SB do {	259	#define SB do {
282	#define SE } while (0)	260	#define SE } while (0)
283		261
284	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	262	#define LOAD(state) load_state(aTHX_ (state));
285	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	263	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
286		264
287	#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
288		266
289	static void	267	static void
290	load_state(pTHX_ Coro__State c)	268	load_state(pTHX_ Coro__State c)
291	{	269	{
292	PL_dowarn = c->dowarn;	270	PL_dowarn = c->dowarn;
		271	PL_in_eval = c->in_eval;
293		272
294	PL_curstackinfo = c->curstackinfo;	273	PL_curstackinfo = c->curstackinfo;
295	PL_curstack = c->curstack;	274	PL_curstack = c->curstack;
296	PL_mainstack = c->mainstack;	275	PL_mainstack = c->mainstack;
297	PL_stack_sp = c->stack_sp;	276	PL_stack_sp = c->stack_sp;
298	PL_op = c->op;	277	PL_op = c->op;
299	PL_curpad = c->curpad;	278	PL_curpad = c->curpad;
		279	PL_comppad = c->comppad;
		280	PL_compcv = c->compcv;
300	PL_stack_base = c->stack_base;	281	PL_stack_base = c->stack_base;
301	PL_stack_max = c->stack_max;	282	PL_stack_max = c->stack_max;
302	PL_tmps_stack = c->tmps_stack;	283	PL_tmps_stack = c->tmps_stack;
303	PL_tmps_floor = c->tmps_floor;	284	PL_tmps_floor = c->tmps_floor;
304	PL_tmps_ix = c->tmps_ix;	285	PL_tmps_ix = c->tmps_ix;
…		…
310	PL_scopestack_ix = c->scopestack_ix;	291	PL_scopestack_ix = c->scopestack_ix;
311	PL_scopestack_max = c->scopestack_max;	292	PL_scopestack_max = c->scopestack_max;
312	PL_savestack = c->savestack;	293	PL_savestack = c->savestack;
313	PL_savestack_ix = c->savestack_ix;	294	PL_savestack_ix = c->savestack_ix;
314	PL_savestack_max = c->savestack_max;	295	PL_savestack_max = c->savestack_max;
		296	#if PERL_VERSION < 9
315	PL_retstack = c->retstack;	297	PL_retstack = c->retstack;
316	PL_retstack_ix = c->retstack_ix;	298	PL_retstack_ix = c->retstack_ix;
317	PL_retstack_max = c->retstack_max;	299	PL_retstack_max = c->retstack_max;
		300	#endif
		301	PL_curpm = c->curpm;
318	PL_curcop = c->curcop;	302	PL_curcop = c->curcop;
319	PL_start_env = c->start_env;
320	PL_top_env = c->top_env;	303	PL_top_env = c->top_env;
321		304
322	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
323	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
324	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
332	{	315	{
333	AV padlist = (AV )POPs;	316	AV padlist = (AV )POPs;
334		317
335	if (padlist)	318	if (padlist)
336	{	319	{
337	put_padlist (cv); /* mark this padlist as available */	320	put_padlist (aTHX_ cv); /* mark this padlist as available */
338	CvPADLIST(cv) = padlist;	321	CvPADLIST(cv) = padlist;
339	#ifdef USE_THREADS
340	/CvOWNER(cv) = (struct perl_thread )POPs;*/
341	#endif
342	}	322	}
343		323
344	++CvDEPTH(cv);	324	++CvDEPTH(cv);
345	}	325	}
346		326
…		…
364		344
365	PUSHs (Nullsv);	345	PUSHs (Nullsv);
366	/* this loop was inspired by pp_caller */	346	/* this loop was inspired by pp_caller */
367	for (;;)	347	for (;;)
368	{	348	{
369	do	349	while (cxix >= 0)
370	{	350	{
371	PERL_CONTEXT *cx = &ccstk[cxix--];	351	PERL_CONTEXT *cx = &ccstk[cxix--];
372		352
373	if (CxTYPE(cx) == CXt_SUB)	353	if (CxTYPE(cx) == CXt_SUB)
374	{	354	{
375	CV *cv = cx->blk_sub.cv;	355	CV *cv = cx->blk_sub.cv;
376	if (CvDEPTH(cv))	356	if (CvDEPTH(cv))
377	{	357	{
378	#ifdef USE_THREADS
379	/XPUSHs ((SV )CvOWNER(cv));*/
380	/CvOWNER(cv) = 0;/
381	/error must unlock this cv etc.. etc.../
382	#endif
383	EXTEND (SP, CvDEPTH(cv)*2);	358	EXTEND (SP, CvDEPTH(cv)*2);
384		359
385	while (--CvDEPTH(cv))	360	while (--CvDEPTH(cv))
386	{	361	{
387	/* this tells the restore code to increment CvDEPTH */	362	/* this tells the restore code to increment CvDEPTH */
…		…
390	}	365	}
391		366
392	PUSHs ((SV *)CvPADLIST(cv));	367	PUSHs ((SV *)CvPADLIST(cv));
393	PUSHs ((SV *)cv);	368	PUSHs ((SV *)cv);
394		369
395	get_padlist (cv); /* this is a monster */	370	get_padlist (aTHX_ cv);
396	}	371	}
397	}	372	}
		373	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)	374	else if (CxTYPE(cx) == CXt_FORMAT)
399	{	375	{
400	/* 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? */
401	/* my bold guess is as a simple, plain sub... */	377	/* my bold guess is as a simple, plain sub... */
402	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");
403	}	379	}
		380	#endif
404	}	381	}
405	while (cxix >= 0);
406		382
407	if (top_si->si_type == PERLSI_MAIN)	383	if (top_si->si_type == PERLSI_MAIN)
408	break;	384	break;
409		385
410	top_si = top_si->si_prev;	386	top_si = top_si->si_prev;
…		…
417		393
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	394	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	395	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	396	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
421		397
422	/* I have not the slightest idea of why av_reify is necessary */
423	/* but if it's missing the defav contents magically get replaced sometimes */
424	if (c->defav)
425	av_reify (c->defav);
426
427	c->dowarn = PL_dowarn;	398	c->dowarn = PL_dowarn;
		399	c->in_eval = PL_in_eval;
428		400
429	c->curstackinfo = PL_curstackinfo;	401	c->curstackinfo = PL_curstackinfo;
430	c->curstack = PL_curstack;	402	c->curstack = PL_curstack;
431	c->mainstack = PL_mainstack;	403	c->mainstack = PL_mainstack;
432	c->stack_sp = PL_stack_sp;	404	c->stack_sp = PL_stack_sp;
433	c->op = PL_op;	405	c->op = PL_op;
434	c->curpad = PL_curpad;	406	c->curpad = PL_curpad;
		407	c->comppad = PL_comppad;
		408	c->compcv = PL_compcv;
435	c->stack_base = PL_stack_base;	409	c->stack_base = PL_stack_base;
436	c->stack_max = PL_stack_max;	410	c->stack_max = PL_stack_max;
437	c->tmps_stack = PL_tmps_stack;	411	c->tmps_stack = PL_tmps_stack;
438	c->tmps_floor = PL_tmps_floor;	412	c->tmps_floor = PL_tmps_floor;
439	c->tmps_ix = PL_tmps_ix;	413	c->tmps_ix = PL_tmps_ix;
…		…
445	c->scopestack_ix = PL_scopestack_ix;	419	c->scopestack_ix = PL_scopestack_ix;
446	c->scopestack_max = PL_scopestack_max;	420	c->scopestack_max = PL_scopestack_max;
447	c->savestack = PL_savestack;	421	c->savestack = PL_savestack;
448	c->savestack_ix = PL_savestack_ix;	422	c->savestack_ix = PL_savestack_ix;
449	c->savestack_max = PL_savestack_max;	423	c->savestack_max = PL_savestack_max;
		424	#if PERL_VERSION < 9
450	c->retstack = PL_retstack;	425	c->retstack = PL_retstack;
451	c->retstack_ix = PL_retstack_ix;	426	c->retstack_ix = PL_retstack_ix;
452	c->retstack_max = PL_retstack_max;	427	c->retstack_max = PL_retstack_max;
		428	#endif
		429	c->curpm = PL_curpm;
453	c->curcop = PL_curcop;	430	c->curcop = PL_curcop;
454	c->start_env = PL_start_env;
455	c->top_env = PL_top_env;	431	c->top_env = PL_top_env;
456	}	432	}
457		433
458	/*	434	/*
459	* allocate various perl stacks. This is an exact copy	435	* allocate various perl stacks. This is an exact copy
460	* of perl.c:init_stacks, except that it uses less memory	436	* of perl.c:init_stacks, except that it uses less memory
461	* on the assumption that coroutines do not usually need	437	* on the (sometimes correct) assumption that coroutines do
462	* a lot of stackspace.	438	* not usually need a lot of stackspace.
463	*/	439	*/
464	STATIC void	440	static void
465	coro_init_stacks (pTHX)	441	coro_init_stacks (pTHX)
466	{	442	{
		443	LOCK;
		444
467	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
468	PL_curstackinfo->si_type = PERLSI_MAIN;	446	PL_curstackinfo->si_type = PERLSI_MAIN;
469	PL_curstack = PL_curstackinfo->si_stack;	447	PL_curstack = PL_curstackinfo->si_stack;
470	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
471		449
…		…
480		458
481	New(54,PL_markstack,16,I32);	459	New(54,PL_markstack,16,I32);
482	PL_markstack_ptr = PL_markstack;	460	PL_markstack_ptr = PL_markstack;
483	PL_markstack_max = PL_markstack + 16;	461	PL_markstack_max = PL_markstack + 16;
484		462
		463	#ifdef SET_MARK_OFFSET
485	SET_MARK_OFFSET;	464	SET_MARK_OFFSET;
		465	#endif
486		466
487	New(54,PL_scopestack,16,I32);	467	New(54,PL_scopestack,16,I32);
488	PL_scopestack_ix = 0;	468	PL_scopestack_ix = 0;
489	PL_scopestack_max = 16;	469	PL_scopestack_max = 16;
490		470
491	New(54,PL_savestack,96,ANY);	471	New(54,PL_savestack,96,ANY);
492	PL_savestack_ix = 0;	472	PL_savestack_ix = 0;
493	PL_savestack_max = 96;	473	PL_savestack_max = 96;
494		474
		475	#if PERL_VERSION < 9
495	New(54,PL_retstack,8,OP*);	476	New(54,PL_retstack,8,OP*);
496	PL_retstack_ix = 0;	477	PL_retstack_ix = 0;
497	PL_retstack_max = 8;	478	PL_retstack_max = 8;
		479	#endif
		480
		481	UNLOCK;
498	}	482	}
499		483
500	/*	484	/*
501	* destroy the stacks, the callchain etc...	485	* destroy the stacks, the callchain etc...
502	* still there is a memleak of 128 bytes...
503	*/	486	*/
504	STATIC void	487	static void
505	destroy_stacks(pTHX)	488	destroy_stacks(pTHX)
506	{	489	{
		490	if (!IN_DESTRUCT)
		491	{
507	/* is this ugly, I ask? */	492	/* is this ugly, I ask? */
508	while (PL_scopestack_ix)	493	LEAVE_SCOPE (0);
509	LEAVE;
510		494
511	/* sure it is, but more important: is it correct?? :/ */	495	/* sure it is, but more important: is it correct?? :/ */
512	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
513	FREETMPS;	496	FREETMPS;
		497
		498	/POPSTACK_TO (PL_mainstack);//D//use/
		499	}
514		500
515	while (PL_curstackinfo->si_next)	501	while (PL_curstackinfo->si_next)
516	PL_curstackinfo = PL_curstackinfo->si_next;	502	PL_curstackinfo = PL_curstackinfo->si_next;
517		503
518	while (PL_curstackinfo)	504	while (PL_curstackinfo)
519	{	505	{
520	PERL_SI *p = PL_curstackinfo->si_prev;	506	PERL_SI *p = PL_curstackinfo->si_prev;
521		507
522	{	508	{ /D//remove/
523	dSP;	509	dSP;
524	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
525	PUTBACK; /* possibly superfluous */	511	PUTBACK; /* possibly superfluous */
526	}	512	}
527		513
528	dounwind(-1);	514	if (!IN_DESTRUCT)
529		515	{
		516	dounwind (-1);/D//remove/
530	SvREFCNT_dec(PL_curstackinfo->si_stack);	517	SvREFCNT_dec (PL_curstackinfo->si_stack);
		518	}
		519
531	Safefree(PL_curstackinfo->si_cxstack);	520	Safefree (PL_curstackinfo->si_cxstack);
532	Safefree(PL_curstackinfo);	521	Safefree (PL_curstackinfo);
533	PL_curstackinfo = p;	522	PL_curstackinfo = p;
534	}	523	}
535		524
536	Safefree(PL_tmps_stack);	525	Safefree (PL_tmps_stack);
537	Safefree(PL_markstack);	526	Safefree (PL_markstack);
538	Safefree(PL_scopestack);	527	Safefree (PL_scopestack);
539	Safefree(PL_savestack);	528	Safefree (PL_savestack);
		529	#if PERL_VERSION < 9
540	Safefree(PL_retstack);	530	Safefree (PL_retstack);
		531	#endif
541	}	532	}
542		533
543	static void	534	static void
544	allocate_stack (Coro__State ctx, int alloc)	535	allocate_stack (Coro__State ctx, int alloc)
545	{	536	{
…		…
548	New (0, stack, 1, coro_stack);	539	New (0, stack, 1, coro_stack);
549		540
550	stack->refcnt = 1;	541	stack->refcnt = 1;
551	stack->usecnt = 1;	542	stack->usecnt = 1;
552	stack->gencnt = ctx->gencnt = 0;	543	stack->gencnt = ctx->gencnt = 0;
		544
553	if (alloc)	545	if (alloc)
554	{	546	{
555	#ifdef HAVE_MMAP	547	#if HAVE_MMAP
556	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 */
557	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);
558	if (stack->sptr == (void *)-1)	550	if (stack->sptr != (void *)-1)
559	#endif
560	{	551	{
561	/FIXME//D//* reasonable stack size! */	552	# if STACKGUARD
		553	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		554	# endif
		555	}
		556	else
		557	#endif
		558	{
562	stack->ssize = -4096 * sizeof (long);	559	stack->ssize = - (STACKSIZE * (long)sizeof (long));
563	New (0, stack->sptr, 4096, long);	560	New (0, stack->sptr, STACKSIZE, long);
564	}	561	}
565	}	562	}
566	else	563	else
567	stack->sptr = 0;	564	stack->sptr = 0;
568		565
…		…
582	{	579	{
583	#ifdef HAVE_MMAP	580	#ifdef HAVE_MMAP
584	if (stack->ssize > 0 && stack->sptr)	581	if (stack->ssize > 0 && stack->sptr)
585	munmap (stack->sptr, stack->ssize);	582	munmap (stack->sptr, stack->ssize);
586	else	583	else
587	#else	584	#endif
588	Safefree (stack->sptr);	585	Safefree (stack->sptr);
589	#endif	586
590	Safefree (stack);	587	Safefree (stack);
591	}	588	}
592	else if (ctx->gencnt == stack->gencnt)	589	else if (ctx->gencnt == stack->gencnt)
593	--stack->usecnt;	590	--stack->usecnt;
594	}	591	}
…		…
598	setup_coro (void *arg)	595	setup_coro (void *arg)
599	{	596	{
600	/*	597	/*
601	* emulate part of the perl startup here.	598	* emulate part of the perl startup here.
602	*/	599	*/
		600	dTHX;
603	dSP;	601	dSP;
604	Coro__State ctx = (Coro__State)arg;	602	Coro__State ctx = (Coro__State)arg;
605	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	603	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
606		604
607	coro_init_stacks (aTHX);	605	coro_init_stacks (aTHX);
608	JMPENV_BOOTSTRAP;	606	/PL_curcop = 0;/
		607	/PL_in_eval = PL_in_eval;/ /* inherit */
		608	SvREFCNT_dec (GvAV (PL_defgv));
		609	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		610
609	SPAGAIN;	611	SPAGAIN;
610
611	/PL_curcop = 0;/
612	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args;
614		612
615	if (ctx->stack)	613	if (ctx->stack)
616	{	614	{
617	ctx->cursp = 0;	615	ctx->cursp = 0;
618		616
619	PUSHMARK(SP);	617	PUSHMARK(SP);
620	PUTBACK;	618	PUTBACK;
621	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	619	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		620
		621	if (SvTRUE (ERRSV))
		622	croak (NULL);
		623	else
622	croak ("FATAL: CCTXT coroutine returned!");	624	croak ("FATAL: CCTXT coroutine returned!");
623	}	625	}
624	else	626	else
625	{	627	{
626	UNOP myop;	628	UNOP myop;
627		629
…		…
639	* that doesn't matter, though, since it is only	641	* that doesn't matter, though, since it is only
640	* pp_nextstate and we never return...	642	* pp_nextstate and we never return...
641	* ah yes, and I don't care anyways ;)	643	* ah yes, and I don't care anyways ;)
642	*/	644	*/
643	PUTBACK;	645	PUTBACK;
644	PL_op = pp_entersub();	646	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
645	SPAGAIN;	647	SPAGAIN;
646		648
647	ENTER; /* necessary e.g. for dounwind */	649	ENTER; /* necessary e.g. for dounwind */
648	}	650	}
649	}	651	}
…		…
652	continue_coro (void *arg)	654	continue_coro (void *arg)
653	{	655	{
654	/*	656	/*
655	* this is a _very_ stripped down perl interpreter ;)	657	* this is a _very_ stripped down perl interpreter ;)
656	*/	658	*/
		659	dTHX;
657	Coro__State ctx = (Coro__State)arg;	660	Coro__State ctx = (Coro__State)arg;
		661
		662	PL_top_env = &ctx->start_env;
658		663
659	ctx->cursp = 0;	664	ctx->cursp = 0;
660	PL_op = PL_op->op_next;	665	PL_op = PL_op->op_next;
661	CALLRUNOPS(aTHX);	666	CALLRUNOPS(aTHX);
662	/NORETURN/	667
663	abort ();	668	abort ();
664	}	669	}
665		670
666	STATIC void	671	static void
667	transfer(pTHX_ struct coro prev, struct coro next, int flags)	672	transfer (pTHX_ struct coro prev, struct coro next, int flags)
668	{	673	{
669	dSP;
670	dSTACKLEVEL;	674	dSTACKLEVEL;
671		675
672	if (prev != next)	676	if (prev != next)
673	{	677	{
674	if (next->mainstack)	678	if (next->mainstack)
675	{	679	{
		680	LOCK;
676	SAVE (prev, flags);	681	SAVE (prev, flags);
677	LOAD (next);	682	LOAD (next);
		683	UNLOCK;
678		684
679	/* mark this state as in-use */	685	/* mark this state as in-use */
680	next->mainstack = 0;	686	next->mainstack = 0;
681	next->tmps_ix = -2;	687	next->tmps_ix = -2;
682		688
…		…
701	continue_coro, (void *)next,	707	continue_coro, (void *)next,
702	next->stack->sptr, labs (next->stack->ssize));	708	next->stack->sptr, labs (next->stack->ssize));
703	}	709	}
704		710
705	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	711	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		712	prev->cursp = stacklevel;
		713	/* don't add any code here */
706	}	714	}
707		715	else
		716	next->cursp = stacklevel;
708	}	717	}
709	else if (next->tmps_ix == -2)	718	else if (next->tmps_ix == -2)
710	croak ("tried to transfer to running coroutine");	719	croak ("tried to transfer to running coroutine");
711	else	720	else
712	{	721	{
		722	LOCK;
713	SAVE (prev, -1); /* first get rid of the old state */	723	SAVE (prev, -1); /* first get rid of the old state */
		724	UNLOCK;
714		725
715	if (flags & TRANSFER_SAVE_CCTXT)	726	if (flags & TRANSFER_SAVE_CCTXT)
716	{	727	{
717	if (!prev->stack)	728	if (!prev->stack)
718	allocate_stack (prev, 0);	729	allocate_stack (prev, 0);
719		730
720	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
721	{	732	{
		733	PL_top_env = &next->start_env;
		734
722	setup_coro (next);	735	setup_coro (next);
		736	next->cursp = stacklevel;
723		737
724	prev->stack->refcnt++;	738	prev->stack->refcnt++;
725	prev->stack->usecnt++;	739	prev->stack->usecnt++;
726	next->stack = prev->stack;	740	next->stack = prev->stack;
727	next->gencnt = prev->gencnt;	741	next->gencnt = prev->gencnt;
728	}	742	}
729	else	743	else
730	{	744	{
		745	assert (!next->stack);
731	allocate_stack (next, 1);	746	allocate_stack (next, 1);
732	coro_create (&(next->stack->cctx),	747	coro_create (&(next->stack->cctx),
733	setup_coro, (void *)next,	748	setup_coro, (void *)next,
734	next->stack->sptr, labs (next->stack->ssize));	749	next->stack->sptr, labs (next->stack->ssize));
735	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		751	prev->cursp = stacklevel;
		752	/* don't add any code here */
736	}	753	}
737	}	754	}
738	else	755	else
		756	{
739	setup_coro (next);	757	setup_coro (next);
		758	next->cursp = stacklevel;
		759	}
740	}	760	}
741	}	761	}
742		762
743	next->cursp = stacklevel;	763	LOCK;
		764	if (coro_mortal)
		765	{
		766	SvREFCNT_dec (coro_mortal);
		767	coro_mortal = 0;
		768	}
		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	\
		787	/* must also be changed inside Coro::Cont::yield */ \
		788	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		789	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		790	\
		791	} while(0)
		792
		793	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
		794
		795	static void
		796	api_transfer(pTHX_ SV prev, SV next, int flags)
		797	{
		798	SV_CORO (prev, "Coro::transfer");
		799	SV_CORO (next, "Coro::transfer");
		800
		801	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		802	}
		803
		804	/ Coro ******************************************************************/
		805
		806	#define PRIO_MAX 3
		807	#define PRIO_HIGH 1
		808	#define PRIO_NORMAL 0
		809	#define PRIO_LOW -1
		810	#define PRIO_IDLE -3
		811	#define PRIO_MIN -4
		812
		813	/* for Coro.pm */
		814	static GV coro_current, coro_idle;
		815	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
		816	static int coro_nready;
		817
		818	static void
		819	coro_enq (pTHX_ SV *sv)
		820	{
		821	SV **xprio;
		822	int prio;
		823
		824	if (SvTYPE (sv) != SVt_PVHV)
		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++;
		836	}
		837
		838	static SV *
		839	coro_deq (pTHX_ int min_prio)
		840	{
		841	int prio = PRIO_MAX - PRIO_MIN;
		842
		843	min_prio -= PRIO_MIN;
		844	if (min_prio < 0)
		845	min_prio = 0;
		846
		847	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		848	if (av_len (coro_ready[prio]) >= 0)
		849	{
		850	coro_nready--;
		851	return av_shift (coro_ready[prio]);
		852	}
		853
		854	return 0;
		855	}
		856
		857	static void
		858	api_ready (SV *coro)
		859	{
		860	dTHX;
		861
		862	if (SvROK (coro))
		863	coro = SvRV (coro);
		864
		865	LOCK;
		866	coro_enq (aTHX_ SvREFCNT_inc (coro));
		867	UNLOCK;
		868	}
		869
		870	static void
		871	api_schedule (void)
		872	{
		873	dTHX;
		874
		875	SV prev, next;
		876
		877	LOCK;
		878
		879	prev = SvRV (GvSV (coro_current));
		880	next = coro_deq (aTHX_ PRIO_MIN);
		881
		882	if (!next)
		883	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		884
		885	/* free this only after the transfer */
		886	coro_mortal = prev;
		887	SV_CORO (prev, "Coro::schedule");
		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),
		896	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		897	}
		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 ();
744	}	909	}
745		910
746	MODULE = Coro::State PACKAGE = Coro::State	911	MODULE = Coro::State PACKAGE = Coro::State
747		912
748	PROTOTYPES: ENABLE	913	PROTOTYPES: ENABLE
749		914
750	BOOT:	915	BOOT:
751	{ /* {} 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
752	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	922	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
753	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	923	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
754	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	924	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
755		925
756	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	926	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
757	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	927	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
758	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	928	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
759	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	929	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
760		930
761	if (!padlist_cache)
762	padlist_cache = newHV ();
763
764	main_mainstack = PL_mainstack;	931	main_mainstack = PL_mainstack;
		932
		933	coroapi.ver = CORO_API_VERSION;
		934	coroapi.transfer = api_transfer;
765	}	935	}
766		936
767	Coro::State	937	Coro::State
768	_newprocess(args)	938	_newprocess(args)
769	SV * args	939	SV * args
…		…
772	Coro__State coro;	942	Coro__State coro;
773		943
774	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	944	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
775	croak ("Coro::State::_newprocess expects an arrayref");	945	croak ("Coro::State::_newprocess expects an arrayref");
776		946
777	New (0, coro, 1, struct coro);	947	Newz (0, coro, 1, struct coro);
778		948
779	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	949	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
780	coro->mainstack = 0; /* actual work is done inside transfer */	950	/coro->mainstack = 0; //actual work is done inside transfer /
781	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;
782		958
783	RETVAL = coro;	959	RETVAL = coro;
784	OUTPUT:	960	OUTPUT:
785	RETVAL	961	RETVAL
786		962
787	void	963	void
788	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	964	transfer(prev, next, flags)
789	Coro::State_or_hashref prev	965	SV *prev
790	Coro::State_or_hashref next	966	SV *next
791	int flags	967	int flags
792	PROTOTYPE: @	968	PROTOTYPE: @
793	CODE:	969	CODE:
		970	PUTBACK;
		971	SV_CORO (next, "Coro::transfer");
		972	SV_CORO (prev, "Coro::transfer");
794	transfer (aTHX_ prev, next, flags);	973	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		974	SPAGAIN;
795		975
796	void	976	void
797	DESTROY(coro)	977	DESTROY(coro)
798	Coro::State coro	978	Coro::State coro
799	CODE:	979	CODE:
800		980
801	if (coro->mainstack && coro->mainstack != main_mainstack)	981	if (coro->mainstack && coro->mainstack != main_mainstack)
802	{	982	{
803	struct coro temp;	983	struct coro temp;
804		984
		985	PUTBACK;
805	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	986	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
806	LOAD(aTHX_ coro);	987	LOAD (aTHX_ coro);
		988	SPAGAIN;
807		989
808	destroy_stacks (aTHX);	990	destroy_stacks (aTHX);
809		991
810	LOAD((&temp)); /* this will get rid of defsv etc.. */	992	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		993	SPAGAIN;
811		994
812	coro->mainstack = 0;	995	coro->mainstack = 0;
813	}	996	}
814		997
815	deallocate_stack (coro);	998	deallocate_stack (coro);
816		999	SvREFCNT_dec (coro->args);
817	Safefree (coro);	1000	Safefree (coro);
818		1001
819	void	1002	void
820	flush()	1003	_exit(code)
		1004	int code
		1005	PROTOTYPE: $
821	CODE:	1006	CODE:
822	#ifdef MAY_FLUSH	1007	_exit (code);
823	flush_padlist_cache ();
824	#endif
825		1008
826	MODULE = Coro::State PACKAGE = Coro::Cont	1009	MODULE = Coro::State PACKAGE = Coro::Cont
827		1010
828	# this is slightly dirty	1011	# this is slightly dirty (should expose a c-level api)
829		1012
830	void	1013	void
831	yield(...)	1014	yield(...)
832	PROTOTYPE: @	1015	PROTOTYPE: @
833	CODE:	1016	CODE:
834	static SV *returnstk;	1017	SV *yieldstack;
835	SV *sv;	1018	SV *sv;
836	AV *defav = GvAV (PL_defgv);	1019	AV *defav = GvAV (PL_defgv);
837	struct coro prev, next;	1020	struct coro prev, next;
838		1021
839	if (!returnstk)	1022	yieldstack = *hv_fetch (
840	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1023	(HV *)SvRV (GvSV (coro_current)),
		1024	"yieldstack", sizeof ("yieldstack") - 1,
		1025	0
		1026	);
841		1027
842	/* set up @_ -- ugly */	1028	/* set up @_ -- ugly */
843	av_clear (defav);	1029	av_clear (defav);
844	av_fill (defav, items - 1);	1030	av_fill (defav, items - 1);
845	while (items--)	1031	while (items--)
846	av_store (defav, items, SvREFCNT_inc (ST(items)));	1032	av_store (defav, items, SvREFCNT_inc (ST(items)));
847		1033
848	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
849	sv = av_pop ((AV *)SvRV (returnstk));	1034	sv = av_pop ((AV *)SvRV (yieldstack));
850	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))));
851	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))));
852	SvREFCNT_dec (sv);	1037	SvREFCNT_dec (sv);
853		1038
854	transfer(aTHX_ prev, next, 0);	1039	transfer (aTHX_ prev, next, 0);
855		1040
		1041	MODULE = Coro::State PACKAGE = Coro
		1042
		1043	# this is slightly dirty (should expose a c-level api)
		1044
		1045	BOOT:
		1046	{
		1047	int i;
		1048	HV *stash = gv_stashpv ("Coro", TRUE);
		1049
		1050	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1051	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1052	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1053	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1054	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1055	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1056
		1057	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1058	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1059
		1060	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1061	coro_ready[i] = newAV ();
		1062
		1063	{
		1064	SV *sv = perl_get_sv("Coro::API", 1);
		1065
		1066	coroapi.schedule = api_schedule;
		1067	coroapi.cede = api_cede;
		1068	coroapi.ready = api_ready;
		1069	coroapi.nready = &coro_nready;
		1070	coroapi.current = coro_current;
		1071
		1072	GCoroAPI = &coroapi;
		1073	sv_setiv(sv, (IV)&coroapi);
		1074	SvREADONLY_on(sv);
		1075	}
		1076	}
		1077
		1078	#if !PERL_MICRO
		1079
		1080	void
		1081	ready(self)
		1082	SV * self
		1083	PROTOTYPE: $
		1084	CODE:
		1085	api_ready (self);
		1086
		1087	#endif
		1088
		1089	int
		1090	nready(...)
		1091	PROTOTYPE:
		1092	CODE:
		1093	RETVAL = coro_nready;
		1094	OUTPUT:
		1095	RETVAL
		1096
		1097	void
		1098	schedule(...)
		1099	PROTOTYPE:
		1100	CODE:
		1101	api_schedule ();
		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 1.18 by root, Thu Jul 26 03:46:15 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 1.18 by root, Thu Jul 26 03:46:15 2001 UTC vs.
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC