[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 1.89 by root, Sat Nov 25 00:40:26 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
		60	#endif
25		61
26	#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV\|TRANSFER_SAVE_DEFSV \
27	\|TRANSFER_SAVE_ERRSV\|TRANSFER_SAVE_CCTXT)
28
29	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
30	#define UCORO_STATE "_coro_state"
31		63
32	/* The next macro should delcare a variable stacklevel that contains and approximation	64	/* 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	65	* to the current C stack pointer. Its property is that it changes with each call
34	* and should be unique. */	66	* and should be unique. */
35	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define dSTACKLEVEL void *stacklevel = &stacklevel
36		68
		69	#define IN_DESTRUCT (PL_main_cv == Nullcv)
		70
37	#define labs(l) ((l) >= 0 ? (l) : -(l))	71	#define labs(l) ((l) >= 0 ? (l) : -(l))
38		72
		73	#include "CoroAPI.h"
		74
		75	#ifdef USE_ITHREADS
		76	static perl_mutex coro_mutex;
		77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		79	#else
		80	# define LOCK (void)0
		81	# define UNLOCK (void)0
		82	#endif
		83
		84	static struct CoroAPI coroapi;
		85	static AV main_mainstack; / used to differentiate between $main and others */
		86	static HV coro_state_stash, coro_stash;
		87	static SV coro_mortal; / will be freed after next transfer */
		88
39	/* this is actually not only the c stack but also c registers etc... */	89	/* this is actually not just the c stack but also c registers etc... */
40	typedef struct {	90	typedef struct coro_stack {
41	int refcnt; /* pointer reference counter */	91	struct coro_stack *next;
42	int usecnt; /* shared by how many coroutines */
43	int gencnt; /* generation counter */
44		92
45	coro_context cctx;	93	void *idle_sp;
46
47	void *sptr;	94	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	95	long ssize; /* positive == mmap, otherwise malloc */
		96
		97	/* cpu state */
		98	coro_context cctx;
49	} coro_stack;	99	} coro_stack;
50		100
51	static coro_stack main_stack = { 1, 0, 0 };	101	static coro_stack *main_stack;
52		102
53	struct coro {	103	struct coro {
54	/* the optional C context */
55	coro_stack *stack;
56	void *cursp;
57	int gencnt;
58
59	/* optionally saved, might be zero */	104	/* optionally saved, might be zero */
60	AV *defav;	105	AV *defav;
61	SV *defsv;	106	SV *defsv;
62	SV *errsv;	107	SV *errsv;
63		108
64	/* saved global state not related to stacks */	109	/* saved global state not related to stacks */
65	U8 dowarn;	110	U8 dowarn;
		111	I32 in_eval;
		112
		113	/* the c stack, if any */
		114	coro_stack *stack;
66		115
67	/* the stacks and related info (callchain etc..) */	116	/* the stacks and related info (callchain etc..) */
68	PERL_SI *curstackinfo;	117	PERL_SI *curstackinfo;
69	AV *curstack;	118	AV *curstack;
70	AV *mainstack;	119	AV *mainstack;
71	SV **stack_sp;	120	SV **stack_sp;
72	OP *op;	121	OP *op;
73	SV **curpad;	122	SV **curpad;
		123	AV *comppad;
		124	CV *compcv;
74	SV **stack_base;	125	SV **stack_base;
75	SV **stack_max;	126	SV **stack_max;
76	SV **tmps_stack;	127	SV **tmps_stack;
77	I32 tmps_floor;	128	I32 tmps_floor;
78	I32 tmps_ix;	129	I32 tmps_ix;
87	I32 savestack_ix;	138	I32 savestack_ix;
88	I32 savestack_max;	139	I32 savestack_max;
89	OP **retstack;	140	OP **retstack;
90	I32 retstack_ix;	141	I32 retstack_ix;
91	I32 retstack_max;	142	I32 retstack_max;
		143	PMOP *curpm;
92	COP *curcop;	144	COP *curcop;
93	JMPENV start_env;
94	JMPENV *top_env;	145	JMPENV *top_env;
		146
		147	/* coro process data */
		148	int prio;
95		149
96	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
97	AV *args;	151	AV *args;
		152	int refcnt;
98	};	153	};
99		154
100	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
101	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
102		157
103	static AV main_mainstack; / used to differentiate between $main and others */	158	static AV *
104	static HV *coro_state_stash;	159	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	{	160	{
113	AV *av;	161	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;	162	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		163
132	newpadlist = newAV ();	164	newpadlist = newAV ();
133	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
134	av_store (newpadlist, 0, (SV *) newpad_name);	166	#if PERL_VERSION < 9
		167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		168	#else
		169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		170	#endif
		171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		172	--AvFILLp (padlist);
		173
		174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
135	av_store (newpadlist, 1, (SV *) newpad);	175	av_store (newpadlist, 1, (SV *)newpad);
136		176
137	av = newAV (); /* will be @_ */	177	return newpadlist;
138	av_extend (av, 0);	178	}
139	av_store (newpad, 0, (SV *) av);
140	AvFLAGS (av) = AVf_REIFY;
141		179
142	for (ix = fpad; ix > 0; ix--)	180	static void
		181	free_padlist (pTHX_ AV *padlist)
		182	{
		183	/* may be during global destruction */
		184	if (SvREFCNT (padlist))
143	{	185	{
144	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	186	I32 i = AvFILLp (padlist);
145	if (namesv && namesv != &PL_sv_undef)	187	while (i >= 0)
146	{	188	{
147	char name = SvPVX (namesv); / XXX */	189	SV **svp = av_fetch (padlist, i--, FALSE);
148	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	190	if (svp)
149	{ /* lexical from outside? */
150	npad[ix] = SvREFCNT_inc (ppad[ix]);
151	}	191	{
152	else
153	{ /* our own lexical */
154	SV *sv;	192	SV *sv;
155	if (*name == '&')	193	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
156	sv = SvREFCNT_inc (ppad[ix]);	194	SvREFCNT_dec (sv);
157	else if (*name == '@')	195
158	sv = (SV *) newAV ();	196	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	}	197	}
167	}	198	}
168	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	199
169	{	200	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	}	201	}
		202	}
179		203
180	#if 0 /* return -ENOTUNDERSTOOD */	204	static int
181	/* Now that vars are all in place, clone nested closures. */	205	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		206	{
		207	AV *padlist;
		208	AV av = (AV )mg->mg_obj;
182		209
183	for (ix = fpad; ix > 0; ix--) {	210	/* casting is fun. */
184	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
185	if (namesv	212	free_padlist (aTHX_ padlist);
186	&& namesv != &PL_sv_undef	213
187	&& !(SvFLAGS(namesv) & SVf_FAKE)	214	SvREFCNT_dec (av);
188	&& *SvPVX(namesv) == '&'	215
189	&& CvCLONE(ppad[ix]))	216	return 0;
190	{	217	}
191	CV kid = cv_clone((CV)ppad[ix]);	218
192	SvREFCNT_dec(ppad[ix]);	219	#define PERL_MAGIC_coro PERL_MAGIC_ext
193	CvCLONE_on(kid);	220
194	SvPADMY_on(kid);	221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
195	npad[ix] = (SV*)kid;	222
196	}	223	/* the next two functions merely cache the padlists */
		224	static void
		225	get_padlist (pTHX_ CV *cv)
		226	{
		227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		228
		229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
		230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
		231	else
		232	{
		233	#if 0
		234	/* this should work - but it doesn't :( */
		235	CV *cp = Perl_cv_clone (aTHX_ cv);
		236	CvPADLIST (cv) = CvPADLIST (cp);
		237	CvPADLIST (cp) = 0;
		238	SvREFCNT_dec (cp);
		239	#else
		240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
		241	#endif
		242	}
		243	}
		244
		245	static void
		246	put_padlist (pTHX_ CV *cv)
		247	{
		248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
		249
		250	if (!mg)
		251	{
		252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		254	mg->mg_virtual = &vtbl_coro;
		255	mg->mg_obj = (SV *)newAV ();
197	}	256	}
198	#endif
199		257
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));	258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
248	}	259	}
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		260
276	#define SB do {	261	#define SB do {
277	#define SE } while (0)	262	#define SE } while (0)
278		263
279	#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE	264	#define LOAD(state) load_state(aTHX_ (state));
280	#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE	265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281		266
282	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
283		268
284	static void	269	static void
285	load_state(pTHX_ Coro__State c)	270	load_state(pTHX_ Coro__State c)
286	{	271	{
287	PL_dowarn = c->dowarn;	272	PL_dowarn = c->dowarn;
		273	PL_in_eval = c->in_eval;
288		274
289	PL_curstackinfo = c->curstackinfo;	275	PL_curstackinfo = c->curstackinfo;
290	PL_curstack = c->curstack;	276	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;	277	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;	278	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;	279	PL_op = c->op;
294	PL_curpad = c->curpad;	280	PL_curpad = c->curpad;
		281	PL_comppad = c->comppad;
		282	PL_compcv = c->compcv;
295	PL_stack_base = c->stack_base;	283	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;	284	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;	285	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;	286	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;	287	PL_tmps_ix = c->tmps_ix;
…		…
305	PL_scopestack_ix = c->scopestack_ix;	293	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;	294	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;	295	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;	296	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;	297	PL_savestack_max = c->savestack_max;
		298	#if PERL_VERSION < 9
310	PL_retstack = c->retstack;	299	PL_retstack = c->retstack;
311	PL_retstack_ix = c->retstack_ix;	300	PL_retstack_ix = c->retstack_ix;
312	PL_retstack_max = c->retstack_max;	301	PL_retstack_max = c->retstack_max;
		302	#endif
		303	PL_curpm = c->curpm;
313	PL_curcop = c->curcop;	304	PL_curcop = c->curcop;
314	PL_start_env = c->start_env;
315	PL_top_env = c->top_env;	305	PL_top_env = c->top_env;
316		306
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
…		…
327	{	317	{
328	AV padlist = (AV )POPs;	318	AV padlist = (AV )POPs;
329		319
330	if (padlist)	320	if (padlist)
331	{	321	{
332	put_padlist (cv); /* mark this padlist as available */	322	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvPADLIST(cv) = padlist;	323	CvPADLIST(cv) = padlist;
334	#ifdef USE_THREADS
335	/CvOWNER(cv) = (struct perl_thread )POPs;*/
336	#endif
337	}	324	}
338		325
339	++CvDEPTH(cv);	326	++CvDEPTH(cv);
340	}	327	}
341		328
…		…
359		346
360	PUSHs (Nullsv);	347	PUSHs (Nullsv);
361	/* this loop was inspired by pp_caller */	348	/* this loop was inspired by pp_caller */
362	for (;;)	349	for (;;)
363	{	350	{
364	do	351	while (cxix >= 0)
365	{	352	{
366	PERL_CONTEXT *cx = &ccstk[cxix--];	353	PERL_CONTEXT *cx = &ccstk[cxix--];
367		354
368	if (CxTYPE(cx) == CXt_SUB)	355	if (CxTYPE(cx) == CXt_SUB)
369	{	356	{
370	CV *cv = cx->blk_sub.cv;	357	CV *cv = cx->blk_sub.cv;
371	if (CvDEPTH(cv))	358	if (CvDEPTH(cv))
372	{	359	{
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);	360	EXTEND (SP, CvDEPTH(cv)*2);
379		361
380	while (--CvDEPTH(cv))	362	while (--CvDEPTH(cv))
381	{	363	{
382	/* this tells the restore code to increment CvDEPTH */	364	/* this tells the restore code to increment CvDEPTH */
…		…
385	}	367	}
386		368
387	PUSHs ((SV *)CvPADLIST(cv));	369	PUSHs ((SV *)CvPADLIST(cv));
388	PUSHs ((SV *)cv);	370	PUSHs ((SV *)cv);
389		371
390	get_padlist (cv); /* this is a monster */	372	get_padlist (aTHX_ cv);
391	}	373	}
392	}	374	}
		375	#ifdef CXt_FORMAT
393	else if (CxTYPE(cx) == CXt_FORMAT)	376	else if (CxTYPE(cx) == CXt_FORMAT)
394	{	377	{
395	/* I never used formats, so how should I know how these are implemented? */	378	/* I never used formats, so how should I know how these are implemented? */
396	/* my bold guess is as a simple, plain sub... */	379	/* my bold guess is as a simple, plain sub... */
397	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	380	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
398	}	381	}
		382	#endif
399	}	383	}
400	while (cxix >= 0);
401		384
402	if (top_si->si_type == PERLSI_MAIN)	385	if (top_si->si_type == PERLSI_MAIN)
403	break;	386	break;
404		387
405	top_si = top_si->si_prev;	388	top_si = top_si->si_prev;
…		…
412		395
413	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
414	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
415	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
416		399
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;	400	c->dowarn = PL_dowarn;
		401	c->in_eval = PL_in_eval;
423		402
424	c->curstackinfo = PL_curstackinfo;	403	c->curstackinfo = PL_curstackinfo;
425	c->curstack = PL_curstack;	404	c->curstack = PL_curstack;
426	c->mainstack = PL_mainstack;	405	c->mainstack = PL_mainstack;
427	c->stack_sp = PL_stack_sp;	406	c->stack_sp = PL_stack_sp;
428	c->op = PL_op;	407	c->op = PL_op;
429	c->curpad = PL_curpad;	408	c->curpad = PL_curpad;
		409	c->comppad = PL_comppad;
		410	c->compcv = PL_compcv;
430	c->stack_base = PL_stack_base;	411	c->stack_base = PL_stack_base;
431	c->stack_max = PL_stack_max;	412	c->stack_max = PL_stack_max;
432	c->tmps_stack = PL_tmps_stack;	413	c->tmps_stack = PL_tmps_stack;
433	c->tmps_floor = PL_tmps_floor;	414	c->tmps_floor = PL_tmps_floor;
434	c->tmps_ix = PL_tmps_ix;	415	c->tmps_ix = PL_tmps_ix;
…		…
440	c->scopestack_ix = PL_scopestack_ix;	421	c->scopestack_ix = PL_scopestack_ix;
441	c->scopestack_max = PL_scopestack_max;	422	c->scopestack_max = PL_scopestack_max;
442	c->savestack = PL_savestack;	423	c->savestack = PL_savestack;
443	c->savestack_ix = PL_savestack_ix;	424	c->savestack_ix = PL_savestack_ix;
444	c->savestack_max = PL_savestack_max;	425	c->savestack_max = PL_savestack_max;
		426	#if PERL_VERSION < 9
445	c->retstack = PL_retstack;	427	c->retstack = PL_retstack;
446	c->retstack_ix = PL_retstack_ix;	428	c->retstack_ix = PL_retstack_ix;
447	c->retstack_max = PL_retstack_max;	429	c->retstack_max = PL_retstack_max;
		430	#endif
		431	c->curpm = PL_curpm;
448	c->curcop = PL_curcop;	432	c->curcop = PL_curcop;
449	c->start_env = PL_start_env;
450	c->top_env = PL_top_env;	433	c->top_env = PL_top_env;
451	}	434	}
452		435
453	/*	436	/*
454	* allocate various perl stacks. This is an exact copy	437	* allocate various perl stacks. This is an exact copy
455	* of perl.c:init_stacks, except that it uses less memory	438	* of perl.c:init_stacks, except that it uses less memory
456	* on the assumption that coroutines do not usually need	439	* on the (sometimes correct) assumption that coroutines do
457	* a lot of stackspace.	440	* not usually need a lot of stackspace.
458	*/	441	*/
459	STATIC void	442	static void
460	coro_init_stacks (pTHX)	443	coro_init_stacks (pTHX)
461	{	444	{
		445	LOCK;
		446
462	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
463	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
464	PL_curstack = PL_curstackinfo->si_stack;	449	PL_curstack = PL_curstackinfo->si_stack;
465	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
466		451
…		…
475		460
476	New(54,PL_markstack,16,I32);	461	New(54,PL_markstack,16,I32);
477	PL_markstack_ptr = PL_markstack;	462	PL_markstack_ptr = PL_markstack;
478	PL_markstack_max = PL_markstack + 16;	463	PL_markstack_max = PL_markstack + 16;
479		464
		465	#ifdef SET_MARK_OFFSET
480	SET_MARK_OFFSET;	466	SET_MARK_OFFSET;
		467	#endif
481		468
482	New(54,PL_scopestack,16,I32);	469	New(54,PL_scopestack,16,I32);
483	PL_scopestack_ix = 0;	470	PL_scopestack_ix = 0;
484	PL_scopestack_max = 16;	471	PL_scopestack_max = 16;
485		472
486	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,96,ANY);
487	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
488	PL_savestack_max = 96;	475	PL_savestack_max = 96;
489		476
		477	#if PERL_VERSION < 9
490	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,8,OP*);
491	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
492	PL_retstack_max = 8;	480	PL_retstack_max = 8;
		481	#endif
		482
		483	UNLOCK;
493	}	484	}
494		485
495	/*	486	/*
496	* destroy the stacks, the callchain etc...	487	* destroy the stacks, the callchain etc...
497	* still there is a memleak of 128 bytes...
498	*/	488	*/
499	STATIC void	489	static void
500	destroy_stacks(pTHX)	490	destroy_stacks(pTHX)
501	{	491	{
		492	if (!IN_DESTRUCT)
		493	{
502	/* is this ugly, I ask? */	494	/* is this ugly, I ask? */
503	while (PL_scopestack_ix)	495	LEAVE_SCOPE (0);
504	LEAVE;
505		496
506	/* sure it is, but more important: is it correct?? :/ */	497	/* 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;	498	FREETMPS;
		499
		500	/POPSTACK_TO (PL_mainstack);//D//use/
		501	}
509		502
510	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
511	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
512		505
513	while (PL_curstackinfo)	506	while (PL_curstackinfo)
514	{	507	{
515	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
516		509
517	{	510	{ /D//remove/
518	dSP;	511	dSP;
519	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	512	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
520	PUTBACK; /* possibly superfluous */	513	PUTBACK; /* possibly superfluous */
521	}	514	}
522		515
523	dounwind(-1);	516	if (!IN_DESTRUCT)
524		517	{
		518	dounwind (-1);/D//remove/
525	SvREFCNT_dec(PL_curstackinfo->si_stack);	519	SvREFCNT_dec (PL_curstackinfo->si_stack);
		520	}
		521
526	Safefree(PL_curstackinfo->si_cxstack);	522	Safefree (PL_curstackinfo->si_cxstack);
527	Safefree(PL_curstackinfo);	523	Safefree (PL_curstackinfo);
528	PL_curstackinfo = p;	524	PL_curstackinfo = p;
529	}	525	}
530		526
531	Safefree(PL_tmps_stack);	527	Safefree (PL_tmps_stack);
532	Safefree(PL_markstack);	528	Safefree (PL_markstack);
533	Safefree(PL_scopestack);	529	Safefree (PL_scopestack);
534	Safefree(PL_savestack);	530	Safefree (PL_savestack);
		531	#if PERL_VERSION < 9
535	Safefree(PL_retstack);	532	Safefree (PL_retstack);
536	}
537
538	static void
539	allocate_stack (Coro__State ctx, int alloc)
540	{
541	coro_stack *stack;
542
543	New (0, stack, 1, coro_stack);
544
545	stack->refcnt = 1;
546	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;
548	if (alloc)
549	{
550	#ifdef HAVE_MMAP
551	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */
552	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANON, 0, 0);
553	if (stack->sptr == (void *)-1)
554	#endif	533	#endif
555	{
556	/FIXME//D//* reasonable stack size! */
557	stack->ssize = -4096 * sizeof (long);
558	New (0, stack->sptr, 4096, long);
559	}
560	}
561	else
562	stack->sptr = 0;
563
564	ctx->stack = stack;
565	}	534	}
566		535
567	static void	536	static void
568	deallocate_stack (Coro__State ctx)	537	setup_coro (struct coro *coro)
569	{
570	coro_stack *stack = ctx->stack;
571
572	ctx->stack = 0;
573
574	if (stack)
575	{
576	if (!--stack->refcnt)
577	{
578	#ifdef HAVE_MMAP
579	if (stack->ssize > 0 && stack->sptr)
580	munmap (stack->sptr, stack->ssize);
581	else
582	#else
583	Safefree (stack->sptr);
584	#endif
585	Safefree (stack);
586	}
587	else if (ctx->gencnt == stack->gencnt)
588	--stack->usecnt;
589	}
590	}
591
592	static void
593	setup_coro (void *arg)
594	{	538	{
595	/*	539	/*
596	* emulate part of the perl startup here.	540	* emulate part of the perl startup here.
597	*/	541	*/
		542	dTHX;
598	dSP;	543	dSP;
599	Coro__State ctx = (Coro__State)arg;	544	UNOP myop;
600	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
601		546
602	coro_init_stacks (aTHX);	547	coro_init_stacks (aTHX);
603	JMPENV_BOOTSTRAP;	548	/PL_curcop = 0;/
		549	/PL_in_eval = PL_in_eval;/ /* inherit */
		550	SvREFCNT_dec (GvAV (PL_defgv));
		551	GvAV (PL_defgv) = coro->args; coro->args = 0;
		552
604	SPAGAIN;	553	SPAGAIN;
605		554
606	/PL_curcop = 0;/	555	Zero (&myop, 1, UNOP);
607	SvREFCNT_dec (GvAV (PL_defgv));	556	myop.op_next = Nullop;
608	GvAV (PL_defgv) = ctx->args;	557	myop.op_flags = OPf_WANT_VOID;
609		558
610	if (ctx->stack)	559	PL_op = (OP *)&myop;
611	{
612	ctx->cursp = 0;
613		560
614	PUSHMARK(SP);	561	PUSHMARK(SP);
		562	XPUSHs (sub_init);
615	PUTBACK;	563	PUTBACK;
616	(void) call_sv (sub_init, G_VOID\|G_NOARGS);	564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
617	croak ("FATAL: CCTXT coroutine returned!");	565	SPAGAIN;
		566
		567	ENTER; /* necessary e.g. for dounwind */
		568	}
		569
		570	static void
		571	transfer_tail ()
		572	{
		573	if (coro_mortal)
		574	{
		575	SvREFCNT_dec (coro_mortal);
		576	coro_mortal = 0;
618	}	577	}
619	else
620	{
621	UNOP myop;
622		578
623	PL_op = (OP *)&myop;	579	UNLOCK;
624
625	Zero(&myop, 1, UNOP);
626	myop.op_next = Nullop;
627	myop.op_flags = OPf_WANT_VOID;
628
629	PUSHMARK(SP);
630	XPUSHs (sub_init);
631	/*
632	* the next line is slightly wrong, as PL_op->op_next
633	* is actually being executed so we skip the first op.
634	* that doesn't matter, though, since it is only
635	* pp_nextstate and we never return...
636	* ah yes, and I don't care anyways ;)
637	*/
638	PUTBACK;
639	PL_op = pp_entersub();
640	SPAGAIN;
641
642	ENTER; /* necessary e.g. for dounwind */
643	}
644	}	580	}
645		581
646	static void	582	static void
647	continue_coro (void *arg)	583	coro_run (void *arg)
648	{	584	{
649	/*	585	/*
650	* this is a _very_ stripped down perl interpreter ;)	586	* this is a _very_ stripped down perl interpreter ;)
651	*/	587	*/
652	Coro__State ctx = (Coro__State)arg;	588	dTHX;
653		589
654	ctx->cursp = 0;	590	transfer_tail ();
		591
		592	PL_top_env = &PL_start_env;
655	PL_op = PL_op->op_next;	593	PL_restartop = PL_op->op_next;
656	CALLRUNOPS(aTHX);	594	/* somebody will hit me for both perl_run and PL_restart_top */
657	/NORETURN/	595	perl_run (aTHX_ PERL_GET_CONTEXT);
		596
658	abort ();	597	abort ();
659	}	598	}
660		599
661	STATIC void	600	static coro_stack *
		601	stack_new ()
		602	{
		603	coro_stack *stack;
		604
		605	New (0, stack, 1, coro_stack);
		606
		607	#if HAVE_MMAP
		608
		609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
		610	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		611
		612	if (stack->sptr == (void *)-1)
		613	{
		614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");
		615	_exit (EXIT_FAILURE);
		616	}
		617
		618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		619
		620	#else
		621
		622	stack->ssize = STACKSIZE * (long)sizeof (long);
		623	New (0, stack->sptr, STACKSIZE, long);
		624
		625	if (!stack->sptr)
		626	{
		627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");
		628	_exit (EXIT_FAILURE);
		629	}
		630
		631	#endif
		632
		633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);
		634
		635	return stack;
		636	}
		637
		638	static void
		639	stack_free (coro_stack *stack)
		640	{
		641	if (!stack \|\| stack == main_stack)
		642	return;
		643
		644	#if HAVE_MMAP
		645	munmap (stack->sptr, stack->ssize);
		646	#else
		647	Safefree (stack->sptr);
		648	#endif
		649
		650	Safefree (stack);
		651	}
		652
		653	static coro_stack *stack_first;
		654
		655	static void
		656	stack_get (struct coro *coro)
		657	{
		658	if (stack_first)
		659	{
		660	coro->stack = stack_first;
		661	stack_first = stack_first->next;
		662	}
		663	else
		664	coro->stack = stack_new ();
		665	}
		666
		667	static void
		668	stack_put (coro_stack *stack)
		669	{
		670	stack->next = stack_first;
		671	stack_first = stack;
		672	}
		673
		674	/* never call directly, always through the coro_state_transfer global variable */
		675	static void
662	transfer(pTHX_ struct coro prev, struct coro next, int flags)	676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
663	{	677	{
664	dSP;
665	dSTACKLEVEL;	678	dSTACKLEVEL;
666		679
		680	/* sometimes transfer is only called to set idle_sp */
		681	if (!prev->stack->idle_sp)
		682	prev->stack->idle_sp = stacklevel;
		683
		684	LOCK;
		685
667	if (prev != next)	686	if (prev != next)
668	{	687	{
		688	coro_stack *prev_stack = prev->stack;
		689
		690	/* possibly "free" the stack */
		691	if (prev_stack->idle_sp == stacklevel)
		692	{
		693	stack_put (prev_stack);
		694	prev->stack = 0;
		695	}
		696
669	if (next->mainstack)	697	if (!next->mainstack)
		698	{
		699	/* first get rid of the old state */
		700	SAVE (prev, -1);
		701	/* setup coroutine call */
		702	setup_coro (next);
		703	next->stack = 0;
		704	}
		705	else
670	{	706	{
671	SAVE (prev, flags);	707	SAVE (prev, flags);
672	LOAD (next);	708	LOAD (next);
673
674	/* mark this state as in-use */
675	next->mainstack = 0;
676	next->tmps_ix = -2;
677
678	/* stacklevel changed? if yes, grab the stack for us! */
679	if (flags & TRANSFER_SAVE_CCTXT)
680	{
681	if (!prev->stack)
682	allocate_stack (prev, 0);
683	else if (prev->cursp != stacklevel
684	&& prev->stack->usecnt > 1)
685	{
686	prev->gencnt = ++prev->stack->gencnt;
687	prev->stack->usecnt = 1;
688	}
689
690	/* has our stack been invalidated? */
691	if (next->stack && next->stack->gencnt != next->gencnt)
692	{
693	deallocate_stack (next);
694	allocate_stack (next, 1);
695	coro_create (&(next->stack->cctx),
696	continue_coro, (void *)next,
697	next->stack->sptr, labs (next->stack->ssize));
698	}
699
700	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
701	}
702
703	}	709	}
704	else if (next->tmps_ix == -2)
705	croak ("tried to transfer to running coroutine");
706	else
707	{
708	SAVE (prev, -1); /* first get rid of the old state */
709		710
710	if (flags & TRANSFER_SAVE_CCTXT)	711	if (!next->stack)
711	{	712	stack_get (next);
712	if (!prev->stack)
713	allocate_stack (prev, 0);
714		713
715	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	714	if (prev_stack != next->stack)
716	{
717	setup_coro (next);
718
719	prev->stack->refcnt++;
720	prev->stack->usecnt++;
721	next->stack = prev->stack;
722	next->gencnt = prev->gencnt;
723	}
724	else
725	{
726	allocate_stack (next, 1);
727	coro_create (&(next->stack->cctx),
728	setup_coro, (void *)next,
729	next->stack->sptr, labs (next->stack->ssize));
730	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	715	coro_transfer (&prev_stack->cctx, &next->stack->cctx);
731	}
732	}
733	else
734	setup_coro (next);
735	}
736	}	716	}
737		717
738	next->cursp = stacklevel;	718	transfer_tail ();
		719	}
		720
		721	/* use this function pointer to call the above function */
		722	/* this is done to increase chances of the compiler not inlining the call */
		723	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		724
		725	static void
		726	coro_state_destroy (struct coro *coro)
		727	{
		728	if (coro->refcnt--)
		729	return;
		730
		731	if (coro->mainstack && coro->mainstack != main_mainstack)
		732	{
		733	struct coro temp;
		734
		735	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		736	LOAD (aTHX_ coro);
		737
		738	destroy_stacks (aTHX);
		739
		740	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		741
		742	coro->mainstack = 0;
		743	}
		744
		745	stack_free (coro->stack);
		746	SvREFCNT_dec (coro->args);
		747	Safefree (coro);
		748	}
		749
		750	static int
		751	coro_state_clear (SV sv, MAGIC mg)
		752	{
		753	struct coro coro = (struct coro )mg->mg_ptr;
		754	mg->mg_ptr = 0;
		755
		756	coro_state_destroy (coro);
		757
		758	return 0;
		759	}
		760
		761	static int
		762	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		763	{
		764	struct coro coro = (struct coro )mg->mg_ptr;
		765
		766	++coro->refcnt;
		767
		768	return 0;
		769	}
		770
		771	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		772
		773	static struct coro *
		774	SvSTATE (SV *coro)
		775	{
		776	HV *stash;
		777	MAGIC *mg;
		778
		779	if (SvROK (coro))
		780	coro = SvRV (coro);
		781
		782	stash = SvSTASH (coro);
		783	if (stash != coro_stash && stash != coro_state_stash)
		784	{
		785	/* very slow, but rare, check */
		786	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		787	croak ("Coro::State object required");
		788	}
		789
		790	mg = SvMAGIC (coro);
		791	assert (mg->mg_type == PERL_MAGIC_ext);
		792	return (struct coro *)mg->mg_ptr;
		793	}
		794
		795	static void
		796	api_transfer (pTHX_ SV prev, SV next, int flags)
		797	{
		798	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		799	}
		800
		801	/ Coro ******************************************************************/
		802
		803	#define PRIO_MAX 3
		804	#define PRIO_HIGH 1
		805	#define PRIO_NORMAL 0
		806	#define PRIO_LOW -1
		807	#define PRIO_IDLE -3
		808	#define PRIO_MIN -4
		809
		810	/* for Coro.pm */
		811	static GV coro_current, coro_idle;
		812	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		813	static int coro_nready;
		814
		815	static void
		816	coro_enq (pTHX_ SV *sv)
		817	{
		818	int prio;
		819
		820	if (SvTYPE (sv) != SVt_PVHV)
		821	croak ("Coro::ready tried to enqueue something that is not a coroutine");
		822
		823	prio = SvSTATE (sv)->prio;
		824
		825	av_push (coro_ready [prio - PRIO_MIN], sv);
		826	coro_nready++;
		827	}
		828
		829	static SV *
		830	coro_deq (pTHX_ int min_prio)
		831	{
		832	int prio = PRIO_MAX - PRIO_MIN;
		833
		834	min_prio -= PRIO_MIN;
		835	if (min_prio < 0)
		836	min_prio = 0;
		837
		838	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
		839	if (AvFILLp (coro_ready [prio]) >= 0)
		840	{
		841	coro_nready--;
		842	return av_shift (coro_ready [prio]);
		843	}
		844
		845	return 0;
		846	}
		847
		848	static void
		849	api_ready (SV *coro)
		850	{
		851	dTHX;
		852
		853	if (SvROK (coro))
		854	coro = SvRV (coro);
		855
		856	LOCK;
		857	coro_enq (aTHX_ SvREFCNT_inc (coro));
		858	UNLOCK;
		859	}
		860
		861	static void
		862	api_schedule (void)
		863	{
		864	dTHX;
		865
		866	SV prev, next;
		867	SV *current = GvSV (coro_current);
		868
		869	for (;;)
		870	{
		871	LOCK;
		872
		873	next = coro_deq (aTHX_ PRIO_MIN);
		874
		875	if (next)
		876	break;
		877
		878	UNLOCK;
		879
		880	{
		881	dSP;
		882
		883	ENTER;
		884	SAVETMPS;
		885
		886	PUSHMARK (SP);
		887	PUTBACK;
		888	call_sv (GvSV (coro_idle), G_DISCARD);
		889
		890	FREETMPS;
		891	LEAVE;
		892	}
		893	}
		894
		895	prev = SvRV (current);
		896	SvRV (current) = next;
		897
		898	/* free this only after the transfer */
		899	coro_mortal = prev;
		900
		901	UNLOCK;
		902
		903	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
		904	}
		905
		906	static int coro_cede_self;
		907
		908	static void
		909	api_cede (void)
		910	{
		911	dTHX;
		912	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
		913
		914	LOCK;
		915
		916	if (coro_cede_self)
		917	{
		918	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
		919	av_unshift (runqueue, 1);
		920	av_store (runqueue, 0, current);
		921	coro_nready++;
		922	coro_cede_self = 0;
		923	}
		924	else
		925	coro_enq (aTHX_ current);
		926
		927	UNLOCK;
		928
		929	api_schedule ();
739	}	930	}
740		931
741	MODULE = Coro::State PACKAGE = Coro::State	932	MODULE = Coro::State PACKAGE = Coro::State
742		933
743	PROTOTYPES: ENABLE	934	PROTOTYPES: DISABLE
744		935
745	BOOT:	936	BOOT:
746	{ /* {} necessary for stoopid perl-5.6.x */	937	{
747	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	938	#ifdef USE_ITHREADS
748	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	939	MUTEX_INIT (&coro_mutex);
		940	#endif
		941	BOOT_PAGESIZE;
		942
749	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	943	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
750		944
751	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	945	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
752	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	946	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
753	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	947	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
754	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
755
756	if (!padlist_cache)
757	padlist_cache = newHV ();
758		948
759	main_mainstack = PL_mainstack;	949	main_mainstack = PL_mainstack;
760	}
761		950
762	Coro::State	951	coroapi.ver = CORO_API_VERSION;
763	_newprocess(args)	952	coroapi.transfer = api_transfer;
764	SV * args	953
765	PROTOTYPE: $	954	Newz (0, main_stack, 1, coro_stack);
		955	main_stack->idle_sp = (void *)-1;
		956
		957	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		958	}
		959
		960	SV *
		961	new (char *klass, ...)
766	CODE:	962	CODE:
767	Coro__State coro;	963	{
		964	struct coro *coro;
		965	HV *hv;
		966	int i;
768		967
769	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
770	croak ("Coro::State::_newprocess expects an arrayref");
771
772	New (0, coro, 1, struct coro);	968	Newz (0, coro, 1, struct coro);
		969	coro->args = newAV ();
773		970
774	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	971	hv = newHV ();
		972	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		973	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		974
		975	av_push (coro->args, newSVsv (RETVAL));
		976	for (i = 1; i < items; i++)
		977	av_push (coro->args, newSVsv (ST (i)));
		978
		979	coro->stack = main_stack;
775	coro->mainstack = 0; /* actual work is done inside transfer */	980	/coro->mainstack = 0; //actual work is done inside transfer /
776	coro->stack = 0;	981	/coro->stack = 0;/
777		982	}
778	RETVAL = coro;
779	OUTPUT:	983	OUTPUT:
780	RETVAL	984	RETVAL
781		985
782	void	986	void
783	transfer(prev, next, flags = TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK)	987	transfer (prev, next, flags)
784	Coro::State_or_hashref prev	988	SV *prev
785	Coro::State_or_hashref next	989	SV *next
786	int flags	990	int flags
787	PROTOTYPE: @
788	CODE:	991	CODE:
789	transfer (aTHX_ prev, next, flags);	992	PUTBACK;
		993	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
		994	SPAGAIN;
		995
		996	int
		997	prio (Coro::State coro, int newprio = 0)
		998	ALIAS:
		999	nice = 1
		1000	CODE:
		1001	{
		1002	RETVAL = coro->prio;
		1003
		1004	if (items > 1)
		1005	{
		1006	if (ix)
		1007	newprio += coro->prio;
		1008
		1009	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1010	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1011
		1012	coro->prio = newprio;
		1013	}
		1014	}
790		1015
791	void	1016	void
792	DESTROY(coro)	1017	_clear_idle_sp (Coro::State self)
793	Coro::State coro	1018	CODE:
794	CODE:	1019	self->stack->idle_sp = 0;
795
796	if (coro->mainstack && coro->mainstack != main_mainstack)
797	{
798	struct coro temp;
799
800	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
801	LOAD(aTHX_ coro);
802
803	destroy_stacks (aTHX);
804
805	LOAD((&temp)); /* this will get rid of defsv etc.. */
806
807	coro->mainstack = 0;
808	}
809
810	deallocate_stack (coro);
811
812	Safefree (coro);
813		1020
814	void	1021	void
815	flush()	1022	_clone_state_from (SV dst, SV src)
816	CODE:	1023	CODE:
817	#ifdef MAY_FLUSH	1024	{
818	flush_padlist_cache ();	1025	struct coro *coro_src = SvSTATE (src);
819	#endif	1026
		1027	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
		1028
		1029	++coro_src->refcnt;
		1030	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
		1031	}
		1032
		1033	void
		1034	_exit (code)
		1035	int code
		1036	PROTOTYPE: $
		1037	CODE:
		1038	_exit (code);
820		1039
821	MODULE = Coro::State PACKAGE = Coro::Cont	1040	MODULE = Coro::State PACKAGE = Coro::Cont
822		1041
823	# this is slightly dirty
824
825	void	1042	void
826	yield(...)	1043	yield (...)
827	PROTOTYPE: @	1044	PROTOTYPE: @
828	CODE:	1045	CODE:
829	static SV *returnstk;	1046	{
		1047	SV *yieldstack;
830	SV *sv;	1048	SV *sv;
831	AV *defav = GvAV (PL_defgv);	1049	AV *defav = GvAV (PL_defgv);
832	struct coro prev, next;	1050	struct coro prev, next;
833		1051
834	if (!returnstk)	1052	yieldstack = *hv_fetch (
835	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1053	(HV *)SvRV (GvSV (coro_current)),
		1054	"yieldstack", sizeof ("yieldstack") - 1,
		1055	0
		1056	);
836		1057
837	/* set up @_ -- ugly */	1058	/* set up @_ -- ugly */
838	av_clear (defav);	1059	av_clear (defav);
839	av_fill (defav, items - 1);	1060	av_fill (defav, items - 1);
840	while (items--)	1061	while (items--)
841	av_store (defav, items, SvREFCNT_inc (ST(items)));	1062	av_store (defav, items, SvREFCNT_inc (ST(items)));
842		1063
843	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
844	sv = av_pop ((AV *)SvRV (returnstk));	1064	sv = av_pop ((AV *)SvRV (yieldstack));
845	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1065	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
846	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1066	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
847	SvREFCNT_dec (sv);	1067	SvREFCNT_dec (sv);
848		1068
849	transfer(aTHX_ prev, next, 0);	1069	coro_state_transfer (aTHX_ prev, next, 0);
		1070	}
850		1071
		1072	MODULE = Coro::State PACKAGE = Coro
		1073
		1074	BOOT:
		1075	{
		1076	int i;
		1077
		1078	coro_stash = gv_stashpv ("Coro", TRUE);
		1079
		1080	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
		1081	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
		1082	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
		1083	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
		1084	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
		1085	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
		1086
		1087	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
		1088	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
		1089
		1090	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
		1091	coro_ready[i] = newAV ();
		1092
		1093	{
		1094	SV *sv = perl_get_sv("Coro::API", 1);
		1095
		1096	coroapi.schedule = api_schedule;
		1097	coroapi.cede = api_cede;
		1098	coroapi.ready = api_ready;
		1099	coroapi.nready = &coro_nready;
		1100	coroapi.current = coro_current;
		1101
		1102	GCoroAPI = &coroapi;
		1103	sv_setiv (sv, (IV)&coroapi);
		1104	SvREADONLY_on (sv);
		1105	}
		1106	}
		1107
		1108	void
		1109	ready (SV *self)
		1110	PROTOTYPE: $
		1111	CODE:
		1112	api_ready (self);
		1113
		1114	int
		1115	nready (...)
		1116	PROTOTYPE:
		1117	CODE:
		1118	RETVAL = coro_nready;
		1119	OUTPUT:
		1120	RETVAL
		1121
		1122	void
		1123	schedule (...)
		1124	PROTOTYPE:
		1125	CODE:
		1126	api_schedule ();
		1127
		1128	void
		1129	_set_cede_self ()
		1130	CODE:
		1131	coro_cede_self = 1;
		1132
		1133	void
		1134	cede (...)
		1135	PROTOTYPE:
		1136	CODE:
		1137	api_cede ();
		1138
		1139	MODULE = Coro::State PACKAGE = Coro::AIO
		1140
		1141	SV *
		1142	_get_state ()
		1143	CODE:
		1144	{
		1145	struct {
		1146	int errorno;
		1147	int laststype;
		1148	int laststatval;
		1149	Stat_t statcache;
		1150	} data;
		1151
		1152	data.errorno = errno;
		1153	data.laststype = PL_laststype;
		1154	data.laststatval = PL_laststatval;
		1155	data.statcache = PL_statcache;
		1156
		1157	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1158	}
		1159	OUTPUT:
		1160	RETVAL
		1161
		1162	void
		1163	_set_state (char *data_)
		1164	PROTOTYPE: $
		1165	CODE:
		1166	{
		1167	struct {
		1168	int errorno;
		1169	int laststype;
		1170	int laststatval;
		1171	Stat_t statcache;
		1172	} data = (void )data_;
		1173
		1174	errno = data->errorno;
		1175	PL_laststype = data->laststype;
		1176	PL_laststatval = data->laststatval;
		1177	PL_statcache = data->statcache;
		1178	}

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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 1.89 by root, Sat Nov 25 00:40:26 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 1.89 by root, Sat Nov 25 00:40:26 2006 UTC