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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.83 by root, Mon Nov 20 22:32:44 2006 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		2
		3	#include "libcoro/coro.c"
		4
1	#include "EXTERN.h"	5	#include "EXTERN.h"
2	#include "perl.h"	6	#include "perl.h"
3	#include "XSUB.h"	7	#include "XSUB.h"
4		8
5	#include "libcoro/coro.c"	9	#include "patchlevel.h"
		10
		11	#if PERL_VERSION < 6
		12	# ifndef PL_ppaddr
		13	# define PL_ppaddr ppaddr
		14	# endif
		15	# ifndef call_sv
		16	# define call_sv perl_call_sv
		17	# endif
		18	# ifndef get_sv
		19	# define get_sv perl_get_sv
		20	# endif
		21	# ifndef get_cv
		22	# define get_cv perl_get_cv
		23	# endif
		24	# ifndef IS_PADGV
		25	# define IS_PADGV(v) 0
		26	# endif
		27	# ifndef IS_PADCONST
		28	# define IS_PADCONST(v) 0
		29	# endif
		30	#endif
		31
		32	#include <errno.h>
		33
		34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		35	# undef STACKGUARD
		36	#endif
		37
		38	#ifndef STACKGUARD
		39	# define STACKGUARD 0
		40	#endif
6		41
7	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
8	# include <unistd.h>	43	# include <unistd.h>
9	# include <sys/mman.h>	44	# include <sys/mman.h>
		45	# ifndef MAP_ANONYMOUS
		46	# ifdef MAP_ANON
		47	# define MAP_ANONYMOUS MAP_ANON
		48	# else
		49	# undef HAVE_MMAP
		50	# endif
10	#endif	51	# endif
11		52	# include <limits.h>
12	#define MAY_FLUSH /* increases codesize */	53	# ifndef PAGESIZE
13		54	# define PAGESIZE pagesize
14	/* perl-related */	55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
15	#define TRANSFER_SAVE_DEFAV 0x00000001	56	static long pagesize;
16	#define TRANSFER_SAVE_DEFSV 0x00000002
17	#define TRANSFER_SAVE_ERRSV 0x00000004
18	/* c-related */
19	#define TRANSFER_SAVE_CCTXT 0x00000008
20	#ifdef CORO_LAZY_STACK
21	# define TRANSFER_LAZY_STACK 0x00000010
22	#else	57	# else
23	# define TRANSFER_LAZY_STACK 0x00000000	58	# define BOOT_PAGESIZE
24	#endif	59	# endif
25		60	#endif
26	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
27	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
28		61
29	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
30	#define UCORO_STATE "_coro_state"	63	#define UCORO_STATE "_coro_state"
31		64
32	/* 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
33	* 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
34	* and should be unique. */	67	* and should be unique. */
35	#define dSTACKLEVEL void *stacklevel = &stacklevel	68	#define dSTACKLEVEL void *stacklevel = &stacklevel
36		69
		70	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		71
37	#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 */
38		91
39	/* 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... */
40	typedef struct {	93	typedef struct {
41	int refcnt; /* pointer reference counter */	94	int refcnt; /* pointer reference counter */
42	int usecnt; /* shared by how many coroutines */	95	int usecnt; /* shared by how many coroutines */
45	coro_context cctx;	98	coro_context cctx;
46		99
47	void *sptr;	100	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	101	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;	102	} coro_stack;
50
51	static coro_stack main_stack = { 1, 0, 0 };
52		103
53	struct coro {	104	struct coro {
54	/* the optional C context */	105	/* the optional C context */
55	coro_stack *stack;	106	coro_stack *stack;
56	void *cursp;	107	void *cursp;
…		…
61	SV *defsv;	112	SV *defsv;
62	SV *errsv;	113	SV *errsv;
63		114
64	/* saved global state not related to stacks */	115	/* saved global state not related to stacks */
65	U8 dowarn;	116	U8 dowarn;
		117	I32 in_eval;
66		118
67	/* the stacks and related info (callchain etc..) */	119	/* the stacks and related info (callchain etc..) */
68	PERL_SI *curstackinfo;	120	PERL_SI *curstackinfo;
69	AV *curstack;	121	AV *curstack;
70	AV *mainstack;	122	AV *mainstack;
71	SV **stack_sp;	123	SV **stack_sp;
72	OP *op;	124	OP *op;
73	SV **curpad;	125	SV **curpad;
		126	AV *comppad;
		127	CV *compcv;
74	SV **stack_base;	128	SV **stack_base;
75	SV **stack_max;	129	SV **stack_max;
76	SV **tmps_stack;	130	SV **tmps_stack;
77	I32 tmps_floor;	131	I32 tmps_floor;
78	I32 tmps_ix;	132	I32 tmps_ix;
…		…
87	I32 savestack_ix;	141	I32 savestack_ix;
88	I32 savestack_max;	142	I32 savestack_max;
89	OP **retstack;	143	OP **retstack;
90	I32 retstack_ix;	144	I32 retstack_ix;
91	I32 retstack_max;	145	I32 retstack_max;
		146	PMOP *curpm;
92	COP *curcop;	147	COP *curcop;
93	JMPENV start_env;
94	JMPENV *top_env;	148	JMPENV *top_env;
95		149
96	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
97	AV *args;	151	AV *args;
98	};	152	};
99		153
100	typedef struct coro *Coro__State;	154	typedef struct coro *Coro__State;
101	typedef struct coro *Coro__State_or_hashref;	155	typedef struct coro *Coro__State_or_hashref;
102		156
103	static AV main_mainstack; / used to differentiate between $main and others */	157	static AV *
104	static HV *coro_state_stash;	158	coro_clone_padlist (pTHX_ CV *cv)
105	static SV *ucoro_state_sv;
106	static U32 ucoro_state_hash;
107	static HV *padlist_cache;
108
109	/* mostly copied from op.c:cv_clone2 */
110	STATIC AV *
111	clone_padlist (AV *protopadlist)
112	{	159	{
113	AV *av;	160	AV *padlist = CvPADLIST (cv);
114	I32 ix;
115	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
116	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
117	SV **pname = AvARRAY (protopad_name);
118	SV **ppad = AvARRAY (protopad);
119	I32 fname = AvFILLp (protopad_name);
120	I32 fpad = AvFILLp (protopad);
121	AV newpadlist, newpad_name, *newpad;	161	AV newpadlist, newpad;
122	SV **npad;
123
124	newpad_name = newAV ();
125	for (ix = fname; ix >= 0; ix--)
126	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
127
128	newpad = newAV ();
129	av_fill (newpad, AvFILLp (protopad));
130	npad = AvARRAY (newpad);
131		162
132	newpadlist = newAV ();	163	newpadlist = newAV ();
133	AvREAL_off (newpadlist);	164	AvREAL_off (newpadlist);
134	av_store (newpadlist, 0, (SV *) newpad_name);	165	#if PERL_VERSION < 9
		166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		167	#else
		168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		169	#endif
		170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		171	--AvFILLp (padlist);
		172
		173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
135	av_store (newpadlist, 1, (SV *) newpad);	174	av_store (newpadlist, 1, (SV *)newpad);
136		175
137	av = newAV (); /* will be @_ */	176	return newpadlist;
138	av_extend (av, 0);	177	}
139	av_store (newpad, 0, (SV *) av);
140	AvFLAGS (av) = AVf_REIFY;
141		178
142	for (ix = fpad; ix > 0; ix--)	179	static void
		180	free_padlist (pTHX_ AV *padlist)
		181	{
		182	/* may be during global destruction */
		183	if (SvREFCNT (padlist))
143	{	184	{
144	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	185	I32 i = AvFILLp (padlist);
145	if (namesv && namesv != &PL_sv_undef)	186	while (i >= 0)
146	{	187	{
147	char name = SvPVX (namesv); / XXX */	188	SV **svp = av_fetch (padlist, i--, FALSE);
148	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	189	if (svp)
149	{ /* lexical from outside? */
150	npad[ix] = SvREFCNT_inc (ppad[ix]);
151	}	190	{
152	else
153	{ /* our own lexical */
154	SV *sv;	191	SV *sv;
155	if (*name == '&')	192	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
156	sv = SvREFCNT_inc (ppad[ix]);	193	SvREFCNT_dec (sv);
157	else if (*name == '@')	194
158	sv = (SV *) newAV ();	195	SvREFCNT_dec (*svp);
159	else if (*name == '%')
160	sv = (SV *) newHV ();
161	else
162	sv = NEWSV (0, 0);
163	if (!SvPADBUSY (sv))
164	SvPADMY_on (sv);
165	npad[ix] = sv;
166	}	196	}
167	}	197	}
168	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	198
169	{	199	SvREFCNT_dec ((SV*)padlist);
170	npad[ix] = SvREFCNT_inc (ppad[ix]);
171	}
172	else
173	{
174	SV *sv = NEWSV (0, 0);
175	SvPADTMP_on (sv);
176	npad[ix] = sv;
177	}
178	}	200	}
		201	}
179		202
180	#if 0 /* return -ENOTUNDERSTOOD */	203	static int
181	/* Now that vars are all in place, clone nested closures. */	204	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		205	{
		206	AV *padlist;
		207	AV av = (AV )mg->mg_obj;
182		208
183	for (ix = fpad; ix > 0; ix--) {	209	/* casting is fun. */
184	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
185	if (namesv	211	free_padlist (aTHX_ padlist);
186	&& namesv != &PL_sv_undef	212
187	&& !(SvFLAGS(namesv) & SVf_FAKE)	213	SvREFCNT_dec (av);
188	&& *SvPVX(namesv) == '&'	214
189	&& CvCLONE(ppad[ix]))	215	return 0;
190	{	216	}
191	CV kid = cv_clone((CV)ppad[ix]);	217
192	SvREFCNT_dec(ppad[ix]);	218	#define PERL_MAGIC_coro PERL_MAGIC_ext
193	CvCLONE_on(kid);	219
194	SvPADMY_on(kid);	220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
195	npad[ix] = (SV*)kid;	221
196	}	222	/* the next two functions merely cache the padlists */
		223	static void
		224	get_padlist (pTHX_ CV *cv)
		225	{
		226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		227
		228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
		229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
		230	else
		231	{
		232	#if 0
		233	/* this should work - but it doesn't :( */
		234	CV *cp = Perl_cv_clone (aTHX_ cv);
		235	CvPADLIST (cv) = CvPADLIST (cp);
		236	CvPADLIST (cp) = 0;
		237	SvREFCNT_dec (cp);
		238	#else
		239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		240	#endif
		241	}
		242	}
		243
		244	static void
		245	put_padlist (pTHX_ CV *cv)
		246	{
		247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		248
		249	if (!mg)
		250	{
		251	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		252	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		253	mg->mg_virtual = &vtbl_coro;
		254	mg->mg_obj = (SV *)newAV ();
197	}	255	}
198	#endif
199		256
200	return newpadlist;
201	}
202
203	#ifdef MAY_FLUSH
204	STATIC AV *
205	free_padlist (AV *padlist)
206	{
207	/* may be during global destruction */
208	if (SvREFCNT(padlist))
209	{
210	I32 i = AvFILLp(padlist);
211	while (i >= 0)
212	{
213	SV **svp = av_fetch(padlist, i--, FALSE);
214	SV sv = svp ? svp : Nullsv;
215	if (sv)
216	SvREFCNT_dec(sv);
217	}
218
219	SvREFCNT_dec((SV*)padlist);
220	}
221	}
222	#endif
223
224	/* the next two functions merely cache the padlists */
225	STATIC void
226	get_padlist (CV *cv)
227	{
228	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
229
230	if (he && AvFILLp ((AV )he) >= 0)
231	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
232	else
233	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
234	}
235
236	STATIC void
237	put_padlist (CV *cv)
238	{
239	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
240
241	if (SvTYPE (*he) != SVt_PVAV)
242	{
243	SvREFCNT_dec (*he);
244	he = (SV )newAV ();
245	}
246
247	av_push ((AV )he, (SV *)CvPADLIST (cv));	257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
248	}	258	}
249
250	#ifdef MAY_FLUSH
251	STATIC void
252	flush_padlist_cache ()
253	{
254	HV *hv = padlist_cache;
255	padlist_cache = newHV ();
256
257	if (hv_iterinit (hv))
258	{
259	HE *he;
260	AV *padlist;
261
262	while (!!(he = hv_iternext (hv)))
263	{
264	AV av = (AV )HeVAL(he);
265
266	/* casting is fun. */
267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
268	free_padlist (padlist);
269	}
270	}
271
272	SvREFCNT_dec (hv);
273	}
274	#endif
275		259
276	#define SB do {	260	#define SB do {
277	#define SE } while (0)	261	#define SE } while (0)
278		262
279	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	263	#define LOAD(state) load_state(aTHX_ (state));
280	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281		265
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	266	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
283		267
284	static void	268	static void
285	load_state(pTHX_ Coro__State c)	269	load_state(pTHX_ Coro__State c)
286	{	270	{
287	PL_dowarn = c->dowarn;	271	PL_dowarn = c->dowarn;
		272	PL_in_eval = c->in_eval;
288		273
289	PL_curstackinfo = c->curstackinfo;	274	PL_curstackinfo = c->curstackinfo;
290	PL_curstack = c->curstack;	275	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;	276	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;	277	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;	278	PL_op = c->op;
294	PL_curpad = c->curpad;	279	PL_curpad = c->curpad;
		280	PL_comppad = c->comppad;
		281	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;	282	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;	283	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;	284	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;	285	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;	286	PL_tmps_ix = c->tmps_ix;
…		…
305	PL_scopestack_ix = c->scopestack_ix;	292	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;	293	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;	294	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;	295	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;	296	PL_savestack_max = c->savestack_max;
		297	#if PERL_VERSION < 9
310	PL_retstack = c->retstack;	298	PL_retstack = c->retstack;
311	PL_retstack_ix = c->retstack_ix;	299	PL_retstack_ix = c->retstack_ix;
312	PL_retstack_max = c->retstack_max;	300	PL_retstack_max = c->retstack_max;
		301	#endif
		302	PL_curpm = c->curpm;
313	PL_curcop = c->curcop;	303	PL_curcop = c->curcop;
314	PL_start_env = c->start_env;
315	PL_top_env = c->top_env;	304	PL_top_env = c->top_env;
316		305
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
327	{	316	{
328	AV padlist = (AV )POPs;	317	AV padlist = (AV )POPs;
329		318
330	if (padlist)	319	if (padlist)
331	{	320	{
332	put_padlist (cv); /* mark this padlist as available */	321	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvPADLIST(cv) = padlist;	322	CvPADLIST(cv) = padlist;
334	#ifdef USE_THREADS
335	/CvOWNER(cv) = (struct perl_thread )POPs;*/
336	#endif
337	}	323	}
338		324
339	++CvDEPTH(cv);	325	++CvDEPTH(cv);
340	}	326	}
341		327
…		…
359		345
360	PUSHs (Nullsv);	346	PUSHs (Nullsv);
361	/* this loop was inspired by pp_caller */	347	/* this loop was inspired by pp_caller */
362	for (;;)	348	for (;;)
363	{	349	{
364	do	350	while (cxix >= 0)
365	{	351	{
366	PERL_CONTEXT *cx = &ccstk[cxix--];	352	PERL_CONTEXT *cx = &ccstk[cxix--];
367		353
368	if (CxTYPE(cx) == CXt_SUB)	354	if (CxTYPE(cx) == CXt_SUB)
369	{	355	{
370	CV *cv = cx->blk_sub.cv;	356	CV *cv = cx->blk_sub.cv;
371	if (CvDEPTH(cv))	357	if (CvDEPTH(cv))
372	{	358	{
373	#ifdef USE_THREADS
374	/XPUSHs ((SV )CvOWNER(cv));*/
375	/CvOWNER(cv) = 0;/
376	/error must unlock this cv etc.. etc.../
377	#endif
378	EXTEND (SP, CvDEPTH(cv)*2);	359	EXTEND (SP, CvDEPTH(cv)*2);
379		360
380	while (--CvDEPTH(cv))	361	while (--CvDEPTH(cv))
381	{	362	{
382	/* this tells the restore code to increment CvDEPTH */	363	/* this tells the restore code to increment CvDEPTH */
…		…
385	}	366	}
386		367
387	PUSHs ((SV *)CvPADLIST(cv));	368	PUSHs ((SV *)CvPADLIST(cv));
388	PUSHs ((SV *)cv);	369	PUSHs ((SV *)cv);
389		370
390	get_padlist (cv); /* this is a monster */	371	get_padlist (aTHX_ cv);
391	}	372	}
392	}	373	}
		374	#ifdef CXt_FORMAT
393	else if (CxTYPE(cx) == CXt_FORMAT)	375	else if (CxTYPE(cx) == CXt_FORMAT)
394	{	376	{
395	/* I never used formats, so how should I know how these are implemented? */	377	/* I never used formats, so how should I know how these are implemented? */
396	/* my bold guess is as a simple, plain sub... */	378	/* my bold guess is as a simple, plain sub... */
397	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
398	}	380	}
		381	#endif
399	}	382	}
400	while (cxix >= 0);
401		383
402	if (top_si->si_type == PERLSI_MAIN)	384	if (top_si->si_type == PERLSI_MAIN)
403	break;	385	break;
404		386
405	top_si = top_si->si_prev;	387	top_si = top_si->si_prev;
…		…
412		394
413	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
414	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
415	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
416		398
417	/* I have not the slightest idea of why av_reify is necessary */
418	/* but if it's missing the defav contents magically get replaced sometimes */
419	if (c->defav)
420	av_reify (c->defav);
421
422	c->dowarn = PL_dowarn;	399	c->dowarn = PL_dowarn;
		400	c->in_eval = PL_in_eval;
423		401
424	c->curstackinfo = PL_curstackinfo;	402	c->curstackinfo = PL_curstackinfo;
425	c->curstack = PL_curstack;	403	c->curstack = PL_curstack;
426	c->mainstack = PL_mainstack;	404	c->mainstack = PL_mainstack;
427	c->stack_sp = PL_stack_sp;	405	c->stack_sp = PL_stack_sp;
428	c->op = PL_op;	406	c->op = PL_op;
429	c->curpad = PL_curpad;	407	c->curpad = PL_curpad;
		408	c->comppad = PL_comppad;
		409	c->compcv = PL_compcv;
430	c->stack_base = PL_stack_base;	410	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;	411	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;	412	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;	413	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;	414	c->tmps_ix = PL_tmps_ix;
…		…
440	c->scopestack_ix = PL_scopestack_ix;	420	c->scopestack_ix = PL_scopestack_ix;
441	c->scopestack_max = PL_scopestack_max;	421	c->scopestack_max = PL_scopestack_max;
442	c->savestack = PL_savestack;	422	c->savestack = PL_savestack;
443	c->savestack_ix = PL_savestack_ix;	423	c->savestack_ix = PL_savestack_ix;
444	c->savestack_max = PL_savestack_max;	424	c->savestack_max = PL_savestack_max;
		425	#if PERL_VERSION < 9
445	c->retstack = PL_retstack;	426	c->retstack = PL_retstack;
446	c->retstack_ix = PL_retstack_ix;	427	c->retstack_ix = PL_retstack_ix;
447	c->retstack_max = PL_retstack_max;	428	c->retstack_max = PL_retstack_max;
		429	#endif
		430	c->curpm = PL_curpm;
448	c->curcop = PL_curcop;	431	c->curcop = PL_curcop;
449	c->start_env = PL_start_env;
450	c->top_env = PL_top_env;	432	c->top_env = PL_top_env;
451	}	433	}
452		434
453	/*	435	/*
454	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
455	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
456	* on the assumption that coroutines do not usually need	438	* on the (sometimes correct) assumption that coroutines do
457	* a lot of stackspace.	439	* not usually need a lot of stackspace.
458	*/	440	*/
459	STATIC void	441	static void
460	coro_init_stacks (pTHX)	442	coro_init_stacks (pTHX)
461	{	443	{
		444	LOCK;
		445
462	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
463	PL_curstackinfo->si_type = PERLSI_MAIN;	447	PL_curstackinfo->si_type = PERLSI_MAIN;
464	PL_curstack = PL_curstackinfo->si_stack;	448	PL_curstack = PL_curstackinfo->si_stack;
465	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
466		450
…		…
475		459
476	New(54,PL_markstack,16,I32);	460	New(54,PL_markstack,16,I32);
477	PL_markstack_ptr = PL_markstack;	461	PL_markstack_ptr = PL_markstack;
478	PL_markstack_max = PL_markstack + 16;	462	PL_markstack_max = PL_markstack + 16;
479		463
		464	#ifdef SET_MARK_OFFSET
480	SET_MARK_OFFSET;	465	SET_MARK_OFFSET;
		466	#endif
481		467
482	New(54,PL_scopestack,16,I32);	468	New(54,PL_scopestack,16,I32);
483	PL_scopestack_ix = 0;	469	PL_scopestack_ix = 0;
484	PL_scopestack_max = 16;	470	PL_scopestack_max = 16;
485		471
486	New(54,PL_savestack,96,ANY);	472	New(54,PL_savestack,96,ANY);
487	PL_savestack_ix = 0;	473	PL_savestack_ix = 0;
488	PL_savestack_max = 96;	474	PL_savestack_max = 96;
489		475
		476	#if PERL_VERSION < 9
490	New(54,PL_retstack,8,OP*);	477	New(54,PL_retstack,8,OP*);
491	PL_retstack_ix = 0;	478	PL_retstack_ix = 0;
492	PL_retstack_max = 8;	479	PL_retstack_max = 8;
		480	#endif
		481
		482	UNLOCK;
493	}	483	}
494		484
495	/*	485	/*
496	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
497	* still there is a memleak of 128 bytes...
498	*/	487	*/
499	STATIC void	488	static void
500	destroy_stacks(pTHX)	489	destroy_stacks(pTHX)
501	{	490	{
		491	if (!IN_DESTRUCT)
		492	{
502	/* is this ugly, I ask? */	493	/* is this ugly, I ask? */
503	while (PL_scopestack_ix)	494	LEAVE_SCOPE (0);
504	LEAVE;
505		495
506	/* sure it is, but more important: is it correct?? :/ */	496	/* sure it is, but more important: is it correct?? :/ */
507	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
508	FREETMPS;	497	FREETMPS;
		498
		499	/POPSTACK_TO (PL_mainstack);//D//use/
		500	}
509		501
510	while (PL_curstackinfo->si_next)	502	while (PL_curstackinfo->si_next)
511	PL_curstackinfo = PL_curstackinfo->si_next;	503	PL_curstackinfo = PL_curstackinfo->si_next;
512		504
513	while (PL_curstackinfo)	505	while (PL_curstackinfo)
514	{	506	{
515	PERL_SI *p = PL_curstackinfo->si_prev;	507	PERL_SI *p = PL_curstackinfo->si_prev;
516		508
517	{	509	{ /D//remove/
518	dSP;	510	dSP;
519	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
520	PUTBACK; /* possibly superfluous */	512	PUTBACK; /* possibly superfluous */
521	}	513	}
522		514
523	dounwind(-1);	515	if (!IN_DESTRUCT)
524		516	{
		517	dounwind (-1);/D//remove/
525	SvREFCNT_dec(PL_curstackinfo->si_stack);	518	SvREFCNT_dec (PL_curstackinfo->si_stack);
		519	}
		520
526	Safefree(PL_curstackinfo->si_cxstack);	521	Safefree (PL_curstackinfo->si_cxstack);
527	Safefree(PL_curstackinfo);	522	Safefree (PL_curstackinfo);
528	PL_curstackinfo = p;	523	PL_curstackinfo = p;
529	}	524	}
530		525
531	Safefree(PL_tmps_stack);	526	Safefree (PL_tmps_stack);
532	Safefree(PL_markstack);	527	Safefree (PL_markstack);
533	Safefree(PL_scopestack);	528	Safefree (PL_scopestack);
534	Safefree(PL_savestack);	529	Safefree (PL_savestack);
		530	#if PERL_VERSION < 9
535	Safefree(PL_retstack);	531	Safefree (PL_retstack);
		532	#endif
536	}	533	}
537		534
538	static void	535	static void
539	allocate_stack (Coro__State ctx, int alloc)	536	allocate_stack (Coro__State ctx, int alloc)
540	{	537	{
…		…
543	New (0, stack, 1, coro_stack);	540	New (0, stack, 1, coro_stack);
544		541
545	stack->refcnt = 1;	542	stack->refcnt = 1;
546	stack->usecnt = 1;	543	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;	544	stack->gencnt = ctx->gencnt = 0;
		545
548	if (alloc)	546	if (alloc)
549	{	547	{
550	#ifdef HAVE_MMAP	548	#if HAVE_MMAP
551	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */	549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
552	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);	550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
553	if (stack->sptr == (void *)-1)	551	if (stack->sptr != (void *)-1)
554	#endif
555	{	552	{
556	/FIXME//D//* reasonable stack size! */	553	# if STACKGUARD
		554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		555	# endif
		556	}
		557	else
		558	#endif
		559	{
557	stack->ssize = -4096 * sizeof (long);	560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
558	New (0, stack->sptr, 4096, long);	561	New (0, stack->sptr, STACKSIZE, long);
559	}	562	}
560	}	563	}
561	else	564	else
562	stack->sptr = 0;	565	stack->sptr = 0;
563		566
…		…
577	{	580	{
578	#ifdef HAVE_MMAP	581	#ifdef HAVE_MMAP
579	if (stack->ssize > 0 && stack->sptr)	582	if (stack->ssize > 0 && stack->sptr)
580	munmap (stack->sptr, stack->ssize);	583	munmap (stack->sptr, stack->ssize);
581	else	584	else
582	#else	585	#endif
583	Safefree (stack->sptr);	586	Safefree (stack->sptr);
584	#endif	587
585	Safefree (stack);	588	Safefree (stack);
586	}	589	}
587	else if (ctx->gencnt == stack->gencnt)	590	else if (ctx->gencnt == stack->gencnt)
588	--stack->usecnt;	591	--stack->usecnt;
589	}	592	}
…		…
593	setup_coro (void *arg)	596	setup_coro (void *arg)
594	{	597	{
595	/*	598	/*
596	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
597	*/	600	*/
		601	dTHX;
598	dSP;	602	dSP;
599	Coro__State ctx = (Coro__State)arg;	603	Coro__State ctx = (Coro__State)arg;
600	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
601		605
602	coro_init_stacks (aTHX);	606	coro_init_stacks (aTHX);
603	JMPENV_BOOTSTRAP;	607	/PL_curcop = 0;/
		608	/PL_in_eval = PL_in_eval;/ /* inherit */
		609	SvREFCNT_dec (GvAV (PL_defgv));
		610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
		611
604	SPAGAIN;	612	SPAGAIN;
605
606	/PL_curcop = 0;/
607	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = ctx->args;
609		613
610	if (ctx->stack)	614	if (ctx->stack)
611	{	615	{
612	ctx->cursp = 0;	616	ctx->cursp = 0;
613		617
614	PUSHMARK(SP);	618	PUSHMARK(SP);
615	PUTBACK;	619	PUTBACK;
616	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	620	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
		621
		622	if (SvTRUE (ERRSV))
		623	croak (NULL);
		624	else
617	croak ("FATAL: CCTXT coroutine returned!");	625	croak ("FATAL: CCTXT coroutine returned!");
618	}	626	}
619	else	627	else
620	{	628	{
621	UNOP myop;	629	UNOP myop;
622		630
623	PL_op = (OP *)&myop;
624
625	Zero(&myop, 1, UNOP);	631	Zero(&myop, 1, UNOP);
626	myop.op_next = Nullop;	632	myop.op_next = Nullop;
627	myop.op_flags = OPf_WANT_VOID;	633	myop.op_flags = OPf_WANT_VOID;
		634
		635	PL_op = (OP *)&myop;
628		636
629	PUSHMARK(SP);	637	PUSHMARK(SP);
630	XPUSHs (sub_init);	638	XPUSHs (sub_init);
631	/*	639	/*
632	* the next line is slightly wrong, as PL_op->op_next	640	* the next line is slightly wrong, as PL_op->op_next
…		…
634	* that doesn't matter, though, since it is only	642	* that doesn't matter, though, since it is only
635	* pp_nextstate and we never return...	643	* pp_nextstate and we never return...
636	* ah yes, and I don't care anyways ;)	644	* ah yes, and I don't care anyways ;)
637	*/	645	*/
638	PUTBACK;	646	PUTBACK;
639	PL_op = pp_entersub();	647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
640	SPAGAIN;	648	SPAGAIN;
641		649
642	ENTER; /* necessary e.g. for dounwind */	650	ENTER; /* necessary e.g. for dounwind */
643	}	651	}
644	}	652	}
…		…
647	continue_coro (void *arg)	655	continue_coro (void *arg)
648	{	656	{
649	/*	657	/*
650	* this is a _very_ stripped down perl interpreter ;)	658	* this is a _very_ stripped down perl interpreter ;)
651	*/	659	*/
		660	dTHX;
652	Coro__State ctx = (Coro__State)arg;	661	Coro__State ctx = (Coro__State)arg;
		662
		663	PL_top_env = &PL_start_env;
653		664
654	ctx->cursp = 0;	665	ctx->cursp = 0;
655	PL_op = PL_op->op_next;	666	PL_op = PL_op->op_next;
656	CALLRUNOPS(aTHX);	667	CALLRUNOPS(aTHX);
657	/NORETURN/	668
658	abort ();	669	abort ();
659	}	670	}
660		671
661	STATIC void	672	static void
662	transfer(pTHX_ struct coro prev, struct coro next, int flags)	673	transfer (pTHX_ struct coro prev, struct coro next, int flags)
663	{	674	{
664	dSP;
665	dSTACKLEVEL;	675	dSTACKLEVEL;
666		676
667	if (prev != next)	677	if (prev != next)
668	{	678	{
		679	/* has this coro been created yet? */
669	if (next->mainstack)	680	if (next->mainstack)
670	{	681	{
		682	LOCK;
671	SAVE (prev, flags);	683	SAVE (prev, flags);
672	LOAD (next);	684	LOAD (next);
		685	UNLOCK;
673		686
674	/* mark this state as in-use */	687	/* mark this state as in-use */
675	next->mainstack = 0;	688	next->mainstack = 0;
676	next->tmps_ix = -2;	689	next->tmps_ix = -2;
677		690
…		…
696	continue_coro, (void *)next,	709	continue_coro, (void *)next,
697	next->stack->sptr, labs (next->stack->ssize));	710	next->stack->sptr, labs (next->stack->ssize));
698	}	711	}
699		712
700	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	713	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		714	prev->cursp = stacklevel;
		715	/* don't add any code here */
701	}	716	}
702		717	else
		718	next->cursp = stacklevel;
703	}	719	}
704	else if (next->tmps_ix == -2)	720	else if (next->tmps_ix == -2)
705	croak ("tried to transfer to running coroutine");	721	croak ("tried to transfer to running coroutine");
706	else	722	else
707	{	723	{
		724	LOCK;
708	SAVE (prev, -1); /* first get rid of the old state */	725	SAVE (prev, -1); /* first get rid of the old state */
		726	UNLOCK;
709		727
		728	/* create the coroutine for the first time */
710	if (flags & TRANSFER_SAVE_CCTXT)	729	if (flags & TRANSFER_SAVE_CCTXT)
711	{	730	{
712	if (!prev->stack)	731	if (!prev->stack)
713	allocate_stack (prev, 0);	732	allocate_stack (prev, 0);
714		733
		734	/* the new coroutine starts with start_env again */
		735	PL_top_env = &PL_start_env;
		736
715	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	737	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
716	{	738	{
717	setup_coro (next);	739	setup_coro (next);
		740	next->cursp = stacklevel;
718		741
719	prev->stack->refcnt++;	742	prev->stack->refcnt++;
720	prev->stack->usecnt++;	743	prev->stack->usecnt++;
721	next->stack = prev->stack;	744	next->stack = prev->stack;
722	next->gencnt = prev->gencnt;	745	next->gencnt = prev->gencnt;
723	}	746	}
724	else	747	else
725	{	748	{
		749	assert (!next->stack);
726	allocate_stack (next, 1);	750	allocate_stack (next, 1);
727	coro_create (&(next->stack->cctx),	751	coro_create (&(next->stack->cctx),
728	setup_coro, (void *)next,	752	setup_coro, (void *)next,
729	next->stack->sptr, labs (next->stack->ssize));	753	next->stack->sptr, labs (next->stack->ssize));
730	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		755	prev->cursp = stacklevel;
		756	/* don't add any code here */
731	}	757	}
732	}	758	}
733	else	759	else
		760	{
734	setup_coro (next);	761	setup_coro (next);
		762	next->cursp = stacklevel;
		763	}
735	}	764	}
736	}	765	}
737		766
738	next->cursp = stacklevel;	767	LOCK;
		768	if (coro_mortal)
		769	{
		770	SvREFCNT_dec (coro_mortal);
		771	coro_mortal = 0;
		772	}
		773	UNLOCK;
		774	}
		775
		776	#define SV_CORO(sv,func) \
		777	do { \
		778	if (SvROK (sv)) \
		779	sv = SvRV (sv); \
		780	\
		781	if (SvTYPE (sv) == SVt_PVHV) \
		782	{ \
		783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		784	\
		785	if (!he) \
		786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		787	\
		788	(sv) = SvRV (HeVAL(he)); \
		789	} \
		790	\
		791	/* must also be changed inside Coro::Cont::yield */ \
		792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
		793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
		794	\
		795	} while(0)
		796
		797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))
		798
		799	static void
		800	api_transfer(pTHX_ SV prev, SV next, int flags)
		801	{
		802	SV_CORO (prev, "Coro::transfer");
		803	SV_CORO (next, "Coro::transfer");
		804
		805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		806	}
		807
		808	/ Coro ******************************************************************/
		809
		810	#define PRIO_MAX 3
		811	#define PRIO_HIGH 1
		812	#define PRIO_NORMAL 0
		813	#define PRIO_LOW -1
		814	#define PRIO_IDLE -3
		815	#define PRIO_MIN -4
		816
		817	/* for Coro.pm */
		818	static GV coro_current, coro_idle;
		819	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		820	static int coro_nready;
		821
		822	static void
		823	coro_enq (pTHX_ SV *sv)
		824	{
		825	SV **xprio;
		826	int prio;
		827
		828	if (SvTYPE (sv) != SVt_PVHV)
		829	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		830
		831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
		832	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
		833
		834	prio = prio > PRIO_MAX ? PRIO_MAX
		835	: prio < PRIO_MIN ? PRIO_MIN
		836	: prio;
		837
		838	av_push (coro_ready [prio - PRIO_MIN], sv);
		839	coro_nready++;
		840	}
		841
		842	static SV *
		843	coro_deq (pTHX_ int min_prio)
		844	{
		845	int prio = PRIO_MAX - PRIO_MIN;
		846
		847	min_prio -= PRIO_MIN;
		848	if (min_prio < 0)
		849	min_prio = 0;
		850
		851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		852	if (AvFILLp (coro_ready [prio]) >= 0)
		853	{
		854	coro_nready--;
		855	return av_shift (coro_ready [prio]);
		856	}
		857
		858	return 0;
		859	}
		860
		861	static void
		862	api_ready (SV *coro)
		863	{
		864	dTHX;
		865
		866	if (SvROK (coro))
		867	coro = SvRV (coro);
		868
		869	LOCK;
		870	coro_enq (aTHX_ SvREFCNT_inc (coro));
		871	UNLOCK;
		872	}
		873
		874	static void
		875	api_schedule (void)
		876	{
		877	dTHX;
		878
		879	SV prev, next;
		880
		881	LOCK;
		882
		883	prev = SvRV (GvSV (coro_current));
		884	next = coro_deq (aTHX_ PRIO_MIN);
		885
		886	if (!next)
		887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
		888
		889	/* free this only after the transfer */
		890	coro_mortal = prev;
		891	SV_CORO (prev, "Coro::schedule");
		892
		893	SvRV (GvSV (coro_current)) = next;
		894
		895	SV_CORO (next, "Coro::schedule");
		896
		897	UNLOCK;
		898
		899	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
		900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
		901	}
		902
		903	static void
		904	api_cede (void)
		905	{
		906	dTHX;
		907
		908	LOCK;
		909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		910	UNLOCK;
		911
		912	api_schedule ();
739	}	913	}
740		914
741	MODULE = Coro::State PACKAGE = Coro::State	915	MODULE = Coro::State PACKAGE = Coro::State
742		916
743	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
744		918
745	BOOT:	919	BOOT:
746	{ /* {} 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
747	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
748	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
749	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
750		929
751	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
752	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
753	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
754	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
755		934
756	if (!padlist_cache)
757	padlist_cache = newHV ();
758
759	main_mainstack = PL_mainstack;	935	main_mainstack = PL_mainstack;
		936
		937	coroapi.ver = CORO_API_VERSION;
		938	coroapi.transfer = api_transfer;
760	}	939	}
761		940
762	Coro::State	941	Coro::State
763	_newprocess(args)	942	_newprocess(args)
764	SV * args	943	SV * args
…		…
767	Coro__State coro;	946	Coro__State coro;
768		947
769	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
770	croak ("Coro::State::_newprocess expects an arrayref");	949	croak ("Coro::State::_newprocess expects an arrayref");
771		950
772	New (0, coro, 1, struct coro);	951	Newz (0, coro, 1, struct coro);
773		952
774	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
775	coro->mainstack = 0; /* actual work is done inside transfer */	954	/coro->mainstack = 0; //actual work is done inside transfer /
776	coro->stack = 0;	955	/coro->stack = 0;/
777		956
778	RETVAL = coro;	957	RETVAL = coro;
779	OUTPUT:	958	OUTPUT:
780	RETVAL	959	RETVAL
781		960
782	void	961	void
783	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	962	transfer(prev, next, flags)
784	Coro::State_or_hashref prev	963	SV *prev
785	Coro::State_or_hashref next	964	SV *next
786	int flags	965	int flags
787	PROTOTYPE: @	966	PROTOTYPE: @
788	CODE:	967	CODE:
		968	PUTBACK;
		969	SV_CORO (next, "Coro::transfer");
		970	SV_CORO (prev, "Coro::transfer");
789	transfer (aTHX_ prev, next, flags);	971	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		972	SPAGAIN;
790		973
791	void	974	void
792	DESTROY(coro)	975	DESTROY(coro)
793	Coro::State coro	976	Coro::State coro
794	CODE:	977	CODE:
795		978
796	if (coro->mainstack && coro->mainstack != main_mainstack)	979	if (coro->mainstack && coro->mainstack != main_mainstack)
797	{	980	{
798	struct coro temp;	981	struct coro temp;
799		982
		983	PUTBACK;
800	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	984	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
801	LOAD(aTHX_ coro);	985	LOAD (aTHX_ coro);
		986	SPAGAIN;
802		987
803	destroy_stacks (aTHX);	988	destroy_stacks (aTHX);
804		989
805	LOAD((&temp)); /* this will get rid of defsv etc.. */	990	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		991	SPAGAIN;
806		992
807	coro->mainstack = 0;	993	coro->mainstack = 0;
808	}	994	}
809		995
810	deallocate_stack (coro);	996	deallocate_stack (coro);
811		997	SvREFCNT_dec (coro->args);
812	Safefree (coro);	998	Safefree (coro);
813		999
814	void	1000	void
815	flush()	1001	_exit(code)
		1002	int code
		1003	PROTOTYPE: $
816	CODE:	1004	CODE:
817	#ifdef MAY_FLUSH	1005	_exit (code);
818	flush_padlist_cache ();
819	#endif
820		1006
821	MODULE = Coro::State PACKAGE = Coro::Cont	1007	MODULE = Coro::State PACKAGE = Coro::Cont
822
823	# this is slightly dirty
824		1008
825	void	1009	void
826	yield(...)	1010	yield(...)
827	PROTOTYPE: @	1011	PROTOTYPE: @
828	CODE:	1012	CODE:
829	static SV *returnstk;	1013	SV *yieldstack;
830	SV *sv;	1014	SV *sv;
831	AV *defav = GvAV (PL_defgv);	1015	AV *defav = GvAV (PL_defgv);
832	struct coro prev, next;	1016	struct coro prev, next;
833		1017
834	if (!returnstk)	1018	yieldstack = *hv_fetch (
835	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1019	(HV *)SvRV (GvSV (coro_current)),
		1020	"yieldstack", sizeof ("yieldstack") - 1,
		1021	0
		1022	);
836		1023
837	/* set up @_ -- ugly */	1024	/* set up @_ -- ugly */
838	av_clear (defav);	1025	av_clear (defav);
839	av_fill (defav, items - 1);	1026	av_fill (defav, items - 1);
840	while (items--)	1027	while (items--)
841	av_store (defav, items, SvREFCNT_inc (ST(items)));	1028	av_store (defav, items, SvREFCNT_inc (ST(items)));
842		1029
843	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
844	sv = av_pop ((AV *)SvRV (returnstk));	1030	sv = av_pop ((AV *)SvRV (yieldstack));
845	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1031	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
846	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1032	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
847	SvREFCNT_dec (sv);	1033	SvREFCNT_dec (sv);
848		1034
849	transfer(aTHX_ prev, next, 0);	1035	transfer (aTHX_ prev, next, 0);
850		1036
		1037	MODULE = Coro::State PACKAGE = Coro
		1038
		1039	BOOT:
		1040	{
		1041	int i;
		1042	HV *stash = gv_stashpv ("Coro", TRUE);
		1043
		1044	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1045	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1046	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1047	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1048	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1049	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1050
		1051	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1052	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1053
		1054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1055	coro_ready[i] = newAV ();
		1056
		1057	{
		1058	SV *sv = perl_get_sv("Coro::API", 1);
		1059
		1060	coroapi.schedule = api_schedule;
		1061	coroapi.cede = api_cede;
		1062	coroapi.ready = api_ready;
		1063	coroapi.nready = &coro_nready;
		1064	coroapi.current = coro_current;
		1065
		1066	GCoroAPI = &coroapi;
		1067	sv_setiv (sv, (IV)&coroapi);
		1068	SvREADONLY_on (sv);
		1069	}
		1070	}
		1071
		1072	#if !PERL_MICRO
		1073
		1074	void
		1075	ready(self)
		1076	SV * self
		1077	PROTOTYPE: $
		1078	CODE:
		1079	api_ready (self);
		1080
		1081	#endif
		1082
		1083	int
		1084	nready(...)
		1085	PROTOTYPE:
		1086	CODE:
		1087	RETVAL = coro_nready;
		1088	OUTPUT:
		1089	RETVAL
		1090
		1091	void
		1092	schedule(...)
		1093	PROTOTYPE:
		1094	CODE:
		1095	api_schedule ();
		1096
		1097	void
		1098	cede(...)
		1099	PROTOTYPE:
		1100	CODE:
		1101	api_cede ();
		1102
		1103	# and these are hacks
		1104	SV *
		1105	_aio_get_state ()
		1106	CODE:
		1107	{
		1108	struct {
		1109	int errorno;
		1110	int laststype;
		1111	int laststatval;
		1112	Stat_t statcache;
		1113	} data;
		1114
		1115	data.errorno = errno;
		1116	data.laststype = PL_laststype;
		1117	data.laststatval = PL_laststatval;
		1118	data.statcache = PL_statcache;
		1119
		1120	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1121	}
		1122	OUTPUT:
		1123	RETVAL
		1124
		1125	void
		1126	_aio_set_state (char *data_)
		1127	PROTOTYPE: $
		1128	CODE:
		1129	{
		1130	struct {
		1131	int errorno;
		1132	int laststype;
		1133	int laststatval;
		1134	Stat_t statcache;
		1135	} data = (void )data_;
		1136
		1137	errno = data->errorno;
		1138	PL_laststype = data->laststype;
		1139	PL_laststatval = data->laststatval;
		1140	PL_statcache = data->statcache;
		1141	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs. Revision 1.83 by root, Mon Nov 20 22:32:44 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.15 by root, Wed Jul 25 04:14:38 2001 UTC vs.
Revision 1.83 by root, Mon Nov 20 22:32:44 2006 UTC