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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.47 by pcg, Sat Nov 15 03:53:10 2003 UTC vs.
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC

…		…
		1	#include "libcoro/coro.c"
		2
1	#include "EXTERN.h"	3	#include "EXTERN.h"
2	#include "perl.h"	4	#include "perl.h"
3	#include "XSUB.h"	5	#include "XSUB.h"
4		6
5	#include "patchlevel.h"	7	#include "patchlevel.h"
6		8
7	#if PATCHLEVEL < 6	9	#if USE_VALGRIND
		10	# include <valgrind/valgrind.h>
		11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
		15
		16	#define PERL_VERSION_ATLEAST(a,b,c) \
		17	(PERL_REVISION > (a) \
		18	\|\| (PERL_REVISION == (a) \
		19	&& (PERL_VERSION > (b) \
		20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		21
		22	#if !PERL_VERSION_ATLEAST (5,6,0)
8	# ifndef PL_ppaddr	23	# ifndef PL_ppaddr
9	# define PL_ppaddr ppaddr	24	# define PL_ppaddr ppaddr
10	# endif	25	# endif
11	# ifndef call_sv	26	# ifndef call_sv
12	# define call_sv perl_call_sv	27	# define call_sv perl_call_sv
23	# ifndef IS_PADCONST	38	# ifndef IS_PADCONST
24	# define IS_PADCONST(v) 0	39	# define IS_PADCONST(v) 0
25	# endif	40	# endif
26	#endif	41	#endif
27		42
28	#include "libcoro/coro.c"	43	/* 5.8.7 */
		44	#ifndef SvRV_set
		45	# define SvRV_set(s,v) SvRV(s) = (v)
		46	#endif
29		47
30	#include <signal.h>	48	#include <stdio.h>
		49	#include <errno.h>
		50	#include <assert.h>
		51
		52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		53	# undef STACKGUARD
		54	#endif
		55
		56	#ifndef STACKGUARD
		57	# define STACKGUARD 0
		58	#endif
31		59
32	#ifdef HAVE_MMAP	60	#ifdef HAVE_MMAP
33	# include <unistd.h>	61	# include <unistd.h>
34	# include <sys/mman.h>	62	# include <sys/mman.h>
35	# ifndef MAP_ANONYMOUS	63	# ifndef MAP_ANONYMOUS
…		…
37	# define MAP_ANONYMOUS MAP_ANON	65	# define MAP_ANONYMOUS MAP_ANON
38	# else	66	# else
39	# undef HAVE_MMAP	67	# undef HAVE_MMAP
40	# endif	68	# endif
41	# endif	69	# endif
		70	# include <limits.h>
		71	# ifndef PAGESIZE
		72	# define PAGESIZE pagesize
		73	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		74	static long pagesize;
		75	# else
		76	# define BOOT_PAGESIZE (void)0
42	#endif	77	# endif
43		78	#else
44	#define MAY_FLUSH /* increases codesize and is rarely used */	79	# define PAGESIZE 0
45		80	# define BOOT_PAGESIZE (void)0
46	#define SUB_INIT "Coro::State::initialize"	81	#endif
47	#define UCORO_STATE "_coro_state"
48		82
49	/* The next macro should declare a variable stacklevel that contains and approximation	83	/* The next macro should declare a variable stacklevel that contains and approximation
50	* to the current C stack pointer. Its property is that it changes with each call	84	* to the current C stack pointer. Its property is that it changes with each call
51	* and should be unique. */	85	* and should be unique. */
		86	#define dSTACKLEVEL int stacklevel
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	87	#define STACKLEVEL ((void *)&stacklevel)
53		88
54	#define IN_DESTRUCT (PL_main_cv == Nullcv)	89	#define IN_DESTRUCT (PL_main_cv == Nullcv)
55		90
56	#define labs(l) ((l) >= 0 ? (l) : -(l))	91	#if __GNUC__ >= 3
		92	# define attribute(x) __attribute__(x)
		93	#else
		94	# define attribute(x)
		95	#endif
		96
		97	#define NOINLINE attribute ((noinline))
57		98
58	#include "CoroAPI.h"	99	#include "CoroAPI.h"
59		100
		101	#ifdef USE_ITHREADS
		102	static perl_mutex coro_mutex;
		103	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		104	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		105	#else
		106	# define LOCK (void)0
		107	# define UNLOCK (void)0
		108	#endif
		109
		110	struct io_state
		111	{
		112	int errorno;
		113	I32 laststype;
		114	int laststatval;
		115	Stat_t statcache;
		116	};
		117
60	static struct CoroAPI coroapi;	118	static struct CoroAPI coroapi;
		119	static AV main_mainstack; / used to differentiate between $main and others */
		120	static HV coro_state_stash, coro_stash;
		121	static SV coro_mortal; / will be freed after next transfer */
61		122
62	/* this is actually not only the c stack but also c registers etc... */	123	static struct coro_cctx *cctx_first;
		124	static int cctx_count, cctx_idle;
		125
		126	/* this is a structure representing a c-level coroutine */
63	typedef struct {	127	typedef struct coro_cctx {
64	int refcnt; /* pointer reference counter */	128	struct coro_cctx *next;
65	int usecnt; /* shared by how many coroutines */
66	int gencnt; /* generation counter */
67		129
68	coro_context cctx;	130	/* the stack */
69
70	void *sptr;	131	void *sptr;
71	long ssize; /* positive == mmap, otherwise malloc */	132	long ssize; /* positive == mmap, otherwise malloc */
72	} coro_stack;
73		133
		134	/* cpu state */
		135	void idle_sp; / sp of top-level transfer/schedule/cede call */
		136	JMPENV *top_env;
		137	coro_context cctx;
		138
		139	int inuse;
		140
		141	#if USE_VALGRIND
		142	int valgrind_id;
		143	#endif
		144	} coro_cctx;
		145
		146	enum {
		147	CF_RUNNING = 0x0001, /* coroutine is running */
		148	CF_READY = 0x0002, /* coroutine is ready */
		149	CF_NEW = 0x0004, /* ahs never been switched to */
		150	};
		151
		152	/* this is a structure representing a perl-level coroutine */
74	struct coro {	153	struct coro {
75	/* the top-level JMPENV for each coroutine, needed to catch dies. */	154	/* the c coroutine allocated to this perl coroutine, if any */
76	JMPENV start_env;	155	coro_cctx *cctx;
77
78	/* the optional C context */
79	coro_stack *stack;
80	void *cursp;
81	int gencnt;
82
83	/* optionally saved, might be zero */
84	AV *defav;
85	SV *defsv;
86	SV *errsv;
87
88	/* saved global state not related to stacks */
89	U8 dowarn;
90	I32 in_eval;
91
92	/* the stacks and related info (callchain etc..) */
93	PERL_SI *curstackinfo;
94	AV *curstack;
95	AV *mainstack;
96	SV **stack_sp;
97	OP *op;
98	SV **curpad;
99	AV *comppad;
100	SV **stack_base;
101	SV **stack_max;
102	SV **tmps_stack;
103	I32 tmps_floor;
104	I32 tmps_ix;
105	I32 tmps_max;
106	I32 *markstack;
107	I32 *markstack_ptr;
108	I32 *markstack_max;
109	I32 *scopestack;
110	I32 scopestack_ix;
111	I32 scopestack_max;
112	ANY *savestack;
113	I32 savestack_ix;
114	I32 savestack_max;
115	OP **retstack;
116	I32 retstack_ix;
117	I32 retstack_max;
118	COP *curcop;
119	JMPENV *top_env;
120		156
121	/* data associated with this coroutine (initial args) */	157	/* data associated with this coroutine (initial args) */
122	AV *args;	158	AV *args;
		159	int refcnt;
		160	int save; /* CORO_SAVE flags */
		161	int flags; /* CF_ flags */
		162
		163	/* optionally saved, might be zero */
		164	AV defav; / @_ */
		165	SV defsv; / $_ */
		166	SV errsv; / $@ */
		167	SV irssv; / $/ */
		168	SV irssv_sv; / real $/ cache */
		169
		170	#define VAR(name,type) type name;
		171	# include "state.h"
		172	#undef VAR
		173
		174	/* coro process data */
		175	int prio;
123	};	176	};
124		177
125	typedef struct coro *Coro__State;	178	typedef struct coro *Coro__State;
126	typedef struct coro *Coro__State_or_hashref;	179	typedef struct coro *Coro__State_or_hashref;
127		180
128	static AV main_mainstack; / used to differentiate between $main and others */	181	static AV *
129	static HV *coro_state_stash;	182	coro_clone_padlist (CV *cv)
130	static SV *ucoro_state_sv;
131	static U32 ucoro_state_hash;
132	static HV *padlist_cache;
133	static SV coro_mortal; / will be freed after next transfer */
134
135	/* mostly copied from op.c:cv_clone2 */
136	STATIC AV *
137	clone_padlist (AV *protopadlist)
138	{	183	{
139	AV *av;	184	AV *padlist = CvPADLIST (cv);
140	I32 ix;
141	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
142	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
143	SV **pname = AvARRAY (protopad_name);
144	SV **ppad = AvARRAY (protopad);
145	I32 fname = AvFILLp (protopad_name);
146	I32 fpad = AvFILLp (protopad);
147	AV newpadlist, newpad_name, *newpad;	185	AV newpadlist, newpad;
148	SV **npad;
149
150	newpad_name = newAV ();
151	for (ix = fname; ix >= 0; ix--)
152	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
153
154	newpad = newAV ();
155	av_fill (newpad, AvFILLp (protopad));
156	npad = AvARRAY (newpad);
157		186
158	newpadlist = newAV ();	187	newpadlist = newAV ();
159	AvREAL_off (newpadlist);	188	AvREAL_off (newpadlist);
160	av_store (newpadlist, 0, (SV *) newpad_name);	189	#if PERL_VERSION_ATLEAST (5,9,0)
		190	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		191	#else
		192	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		193	#endif
		194	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		195	--AvFILLp (padlist);
		196
		197	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
161	av_store (newpadlist, 1, (SV *) newpad);	198	av_store (newpadlist, 1, (SV *)newpad);
162		199
163	av = newAV (); /* will be @_ */	200	return newpadlist;
164	av_extend (av, 0);	201	}
165	av_store (newpad, 0, (SV *) av);
166	AvFLAGS (av) = AVf_REIFY;
167		202
168	for (ix = fpad; ix > 0; ix--)	203	static void
		204	free_padlist (AV *padlist)
		205	{
		206	/* may be during global destruction */
		207	if (SvREFCNT (padlist))
169	{	208	{
170	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	209	I32 i = AvFILLp (padlist);
171	if (namesv && namesv != &PL_sv_undef)	210	while (i >= 0)
172	{	211	{
173	char name = SvPVX (namesv); / XXX */	212	SV **svp = av_fetch (padlist, i--, FALSE);
174	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	213	if (svp)
175	{ /* lexical from outside? */
176	npad[ix] = SvREFCNT_inc (ppad[ix]);
177	}	214	{
178	else
179	{ /* our own lexical */
180	SV *sv;	215	SV *sv;
181	if (*name == '&')	216	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
182	sv = SvREFCNT_inc (ppad[ix]);	217	SvREFCNT_dec (sv);
183	else if (*name == '@')	218
184	sv = (SV *) newAV ();	219	SvREFCNT_dec (*svp);
185	else if (*name == '%')
186	sv = (SV *) newHV ();
187	else
188	sv = NEWSV (0, 0);
189	if (!SvPADBUSY (sv))
190	SvPADMY_on (sv);
191	npad[ix] = sv;
192	}	220	}
193	}	221	}
194	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	222
195	{	223	SvREFCNT_dec ((SV*)padlist);
196	npad[ix] = SvREFCNT_inc (ppad[ix]);
197	}
198	else
199	{
200	SV *sv = NEWSV (0, 0);
201	SvPADTMP_on (sv);
202	npad[ix] = sv;
203	}
204	}	224	}
		225	}
205		226
206	#if 0 /* return -ENOTUNDERSTOOD */	227	static int
207	/* Now that vars are all in place, clone nested closures. */	228	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		229	{
		230	AV *padlist;
		231	AV av = (AV )mg->mg_obj;
208		232
209	for (ix = fpad; ix > 0; ix--) {	233	/* casting is fun. */
210	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
211	if (namesv	235	free_padlist (padlist);
212	&& namesv != &PL_sv_undef	236
213	&& !(SvFLAGS(namesv) & SVf_FAKE)	237	SvREFCNT_dec (av);
214	&& *SvPVX(namesv) == '&'	238
215	&& CvCLONE(ppad[ix]))	239	return 0;
216	{	240	}
217	CV kid = cv_clone((CV)ppad[ix]);	241
218	SvREFCNT_dec(ppad[ix]);	242	#define PERL_MAGIC_coro PERL_MAGIC_ext
219	CvCLONE_on(kid);	243
220	SvPADMY_on(kid);	244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
221	npad[ix] = (SV*)kid;	245
222	}	246	#define CORO_MAGIC(cv) \
		247	SvMAGIC (cv) \
		248	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		249	? SvMAGIC (cv) \
		250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		251	: 0
		252
		253	/* the next two functions merely cache the padlists */
		254	static void
		255	get_padlist (CV *cv)
		256	{
		257	MAGIC *mg = CORO_MAGIC (cv);
		258	AV *av;
		259
		260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
		261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
		262	else
		263	{
		264	#if 0
		265	/* this is probably cleaner, but also slower? */
		266	CV *cp = Perl_cv_clone (cv);
		267	CvPADLIST (cv) = CvPADLIST (cp);
		268	CvPADLIST (cp) = 0;
		269	SvREFCNT_dec (cp);
		270	#else
		271	CvPADLIST (cv) = coro_clone_padlist (cv);
		272	#endif
		273	}
		274	}
		275
		276	static void
		277	put_padlist (CV *cv)
		278	{
		279	MAGIC *mg = CORO_MAGIC (cv);
		280	AV *av;
		281
		282	if (!mg)
		283	{
		284	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		285	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		286	mg->mg_virtual = &vtbl_coro;
		287	mg->mg_obj = (SV *)newAV ();
223	}	288	}
224	#endif
225		289
226	return newpadlist;	290	av = (AV *)mg->mg_obj;
227	}
228		291
229	#ifdef MAY_FLUSH	292	if (AvFILLp (av) >= AvMAX (av))
230	STATIC void	293	av_extend (av, AvMAX (av) + 1);
231	free_padlist (AV *padlist)
232	{
233	/* may be during global destruction */
234	if (SvREFCNT(padlist))
235	{
236	I32 i = AvFILLp(padlist);
237	while (i >= 0)
238	{
239	SV **svp = av_fetch(padlist, i--, FALSE);
240	SV sv = svp ? svp : Nullsv;
241	if (sv)
242	SvREFCNT_dec(sv);
243	}
244		294
245	SvREFCNT_dec((SV*)padlist);	295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
246	}
247	}	296	}
248	#endif
249
250	/* the next two functions merely cache the padlists */
251	STATIC void
252	get_padlist (CV *cv)
253	{
254	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);
255
256	if (he && AvFILLp ((AV )he) >= 0)
257	CvPADLIST (cv) = (AV )av_pop ((AV )*he);
258	else
259	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
260	}
261
262	STATIC void
263	put_padlist (CV *cv)
264	{
265	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);
266
267	if (SvTYPE (*he) != SVt_PVAV)
268	{
269	SvREFCNT_dec (*he);
270	he = (SV )newAV ();
271	}
272
273	av_push ((AV )he, (SV *)CvPADLIST (cv));
274	}
275
276	#ifdef MAY_FLUSH
277	STATIC void
278	flush_padlist_cache ()
279	{
280	HV *hv = padlist_cache;
281	padlist_cache = newHV ();
282
283	if (hv_iterinit (hv))
284	{
285	HE *he;
286	AV *padlist;
287
288	while (!!(he = hv_iternext (hv)))
289	{
290	AV av = (AV )HeVAL(he);
291
292	/* casting is fun. */
293	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
294	free_padlist (padlist);
295	}
296	}
297
298	SvREFCNT_dec (hv);
299	}
300	#endif
301		297
302	#define SB do {	298	#define SB do {
303	#define SE } while (0)	299	#define SE } while (0)
304		300
305	#define LOAD(state) load_state(aTHX_ (state));
306	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
307
308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
309		302
310	static void	303	static void
311	load_state(pTHX_ Coro__State c)	304	load_perl (Coro__State c)
312	{	305	{
313	PL_dowarn = c->dowarn;	306	#define VAR(name,type) PL_ ## name = c->name;
314	PL_in_eval = c->in_eval;	307	# include "state.h"
315		308	#undef VAR
316	PL_curstackinfo = c->curstackinfo;
317	PL_curstack = c->curstack;
318	PL_mainstack = c->mainstack;
319	PL_stack_sp = c->stack_sp;
320	PL_op = c->op;
321	PL_curpad = c->curpad;
322	PL_comppad = c->comppad;
323	PL_stack_base = c->stack_base;
324	PL_stack_max = c->stack_max;
325	PL_tmps_stack = c->tmps_stack;
326	PL_tmps_floor = c->tmps_floor;
327	PL_tmps_ix = c->tmps_ix;
328	PL_tmps_max = c->tmps_max;
329	PL_markstack = c->markstack;
330	PL_markstack_ptr = c->markstack_ptr;
331	PL_markstack_max = c->markstack_max;
332	PL_scopestack = c->scopestack;
333	PL_scopestack_ix = c->scopestack_ix;
334	PL_scopestack_max = c->scopestack_max;
335	PL_savestack = c->savestack;
336	PL_savestack_ix = c->savestack_ix;
337	PL_savestack_max = c->savestack_max;
338	PL_retstack = c->retstack;
339	PL_retstack_ix = c->retstack_ix;
340	PL_retstack_max = c->retstack_max;
341	PL_curcop = c->curcop;
342	PL_top_env = c->top_env;
343		309
344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		313	if (c->irssv)
		314	{
		315	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		316	SvREFCNT_dec (c->irssv);
		317	else
		318	{
		319	REPLACE_SV (PL_rs, c->irssv);
		320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		321	sv_setsv (c->irssv_sv, PL_rs);
		322	}
		323	}
347		324
348	{	325	{
349	dSP;	326	dSP;
350	CV *cv;	327	CV *cv;
351		328
352	/* now do the ugly restore mess */	329	/* now do the ugly restore mess */
353	while ((cv = (CV *)POPs))	330	while ((cv = (CV *)POPs))
354	{	331	{
355	AV padlist = (AV )POPs;
356
357	if (padlist)
358	{
359	put_padlist (cv); /* mark this padlist as available */	332	put_padlist (cv); /* mark this padlist as available */
360	CvPADLIST(cv) = padlist;	333	CvDEPTH (cv) = PTR2IV (POPs);
361	#ifdef USE_THREADS	334	CvPADLIST (cv) = (AV *)POPs;
362	/CvOWNER(cv) = (struct perl_thread )POPs;*/
363	#endif
364	}
365
366	++CvDEPTH(cv);
367	}	335	}
368		336
369	PUTBACK;	337	PUTBACK;
370	}	338	}
371	}	339	}
372		340
373	static void	341	static void
374	save_state(pTHX_ Coro__State c, int flags)	342	save_perl (Coro__State c)
375	{	343	{
376	{	344	{
377	dSP;	345	dSP;
378	I32 cxix = cxstack_ix;	346	I32 cxix = cxstack_ix;
379	PERL_CONTEXT *ccstk = cxstack;	347	PERL_CONTEXT *ccstk = cxstack;
…		…
382	/*	350	/*
383	* the worst thing you can imagine happens first - we have to save	351	* the worst thing you can imagine happens first - we have to save
384	* (and reinitialize) all cv's in the whole callchain :(	352	* (and reinitialize) all cv's in the whole callchain :(
385	*/	353	*/
386		354
		355	EXTEND (SP, 3 + 1);
387	PUSHs (Nullsv);	356	PUSHs (Nullsv);
388	/* this loop was inspired by pp_caller */	357	/* this loop was inspired by pp_caller */
389	for (;;)	358	for (;;)
390	{	359	{
391	while (cxix >= 0)	360	while (cxix >= 0)
392	{	361	{
393	PERL_CONTEXT *cx = &ccstk[cxix--];	362	PERL_CONTEXT *cx = &ccstk[cxix--];
394		363
395	if (CxTYPE(cx) == CXt_SUB)	364	if (CxTYPE (cx) == CXt_SUB)
396	{	365	{
397	CV *cv = cx->blk_sub.cv;	366	CV *cv = cx->blk_sub.cv;
		367
398	if (CvDEPTH(cv))	368	if (CvDEPTH (cv))
399	{	369	{
400	#ifdef USE_THREADS
401	/XPUSHs ((SV )CvOWNER(cv));*/
402	/CvOWNER(cv) = 0;/
403	/error must unlock this cv etc.. etc.../
404	#endif
405	EXTEND (SP, CvDEPTH(cv)*2);	370	EXTEND (SP, 3);
406
407	while (--CvDEPTH(cv))
408	{
409	/* this tells the restore code to increment CvDEPTH */
410	PUSHs (Nullsv);
411	PUSHs ((SV *)cv);
412	}
413
414	PUSHs ((SV *)CvPADLIST(cv));	371	PUSHs ((SV *)CvPADLIST (cv));
		372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
415	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
416		374
		375	CvDEPTH (cv) = 0;
417	get_padlist (cv); /* this is a monster */	376	get_padlist (cv);
418	}	377	}
419	}	378	}
420	#ifdef CXt_FORMAT
421	else if (CxTYPE(cx) == CXt_FORMAT)
422	{
423	/* I never used formats, so how should I know how these are implemented? */
424	/* my bold guess is as a simple, plain sub... */
425	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
426	}
427	#endif
428	}	379	}
429		380
430	if (top_si->si_type == PERLSI_MAIN)	381	if (top_si->si_type == PERLSI_MAIN)
431	break;	382	break;
432		383
…		…
436	}	387	}
437		388
438	PUTBACK;	389	PUTBACK;
439	}	390	}
440		391
441	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	392	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
442	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	393	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
443	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	394	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		395	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
444		396
445	c->dowarn = PL_dowarn;	397	#define VAR(name,type)c->name = PL_ ## name;
446	c->in_eval = PL_in_eval;	398	# include "state.h"
447		399	#undef VAR
448	c->curstackinfo = PL_curstackinfo;
449	c->curstack = PL_curstack;
450	c->mainstack = PL_mainstack;
451	c->stack_sp = PL_stack_sp;
452	c->op = PL_op;
453	c->curpad = PL_curpad;
454	c->comppad = PL_comppad;
455	c->stack_base = PL_stack_base;
456	c->stack_max = PL_stack_max;
457	c->tmps_stack = PL_tmps_stack;
458	c->tmps_floor = PL_tmps_floor;
459	c->tmps_ix = PL_tmps_ix;
460	c->tmps_max = PL_tmps_max;
461	c->markstack = PL_markstack;
462	c->markstack_ptr = PL_markstack_ptr;
463	c->markstack_max = PL_markstack_max;
464	c->scopestack = PL_scopestack;
465	c->scopestack_ix = PL_scopestack_ix;
466	c->scopestack_max = PL_scopestack_max;
467	c->savestack = PL_savestack;
468	c->savestack_ix = PL_savestack_ix;
469	c->savestack_max = PL_savestack_max;
470	c->retstack = PL_retstack;
471	c->retstack_ix = PL_retstack_ix;
472	c->retstack_max = PL_retstack_max;
473	c->curcop = PL_curcop;
474	c->top_env = PL_top_env;
475	}	400	}
476		401
477	/*	402	/*
478	* allocate various perl stacks. This is an exact copy	403	* allocate various perl stacks. This is an exact copy
479	* of perl.c:init_stacks, except that it uses less memory	404	* of perl.c:init_stacks, except that it uses less memory
480	* on the assumption that coroutines do not usually need	405	* on the (sometimes correct) assumption that coroutines do
481	* a lot of stackspace.	406	* not usually need a lot of stackspace.
482	*/	407	*/
483	STATIC void	408	#if USE_PERL_INIT_STACKS
		409	# define coro_init_stacks init_stacks
		410	#else
		411
		412	static void
484	coro_init_stacks (pTHX)	413	coro_init_stacks ()
485	{	414	{
486	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	415	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
487	PL_curstackinfo->si_type = PERLSI_MAIN;	416	PL_curstackinfo->si_type = PERLSI_MAIN;
488	PL_curstack = PL_curstackinfo->si_stack;	417	PL_curstack = PL_curstackinfo->si_stack;
489	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	418	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
490		419
491	PL_stack_base = AvARRAY(PL_curstack);	420	PL_stack_base = AvARRAY(PL_curstack);
492	PL_stack_sp = PL_stack_base;	421	PL_stack_sp = PL_stack_base;
493	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	422	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
494		423
495	New(50,PL_tmps_stack,96,SV*);	424	New(50,PL_tmps_stack,128,SV*);
496	PL_tmps_floor = -1;	425	PL_tmps_floor = -1;
497	PL_tmps_ix = -1;	426	PL_tmps_ix = -1;
498	PL_tmps_max = 96;	427	PL_tmps_max = 128;
499		428
500	New(54,PL_markstack,16,I32);	429	New(54,PL_markstack,32,I32);
501	PL_markstack_ptr = PL_markstack;	430	PL_markstack_ptr = PL_markstack;
502	PL_markstack_max = PL_markstack + 16;	431	PL_markstack_max = PL_markstack + 32;
503		432
504	#ifdef SET_MARK_OFFSET	433	#ifdef SET_MARK_OFFSET
505	SET_MARK_OFFSET;	434	SET_MARK_OFFSET;
506	#endif	435	#endif
507		436
508	New(54,PL_scopestack,16,I32);	437	New(54,PL_scopestack,32,I32);
509	PL_scopestack_ix = 0;	438	PL_scopestack_ix = 0;
510	PL_scopestack_max = 16;	439	PL_scopestack_max = 32;
511		440
512	New(54,PL_savestack,96,ANY);	441	New(54,PL_savestack,64,ANY);
513	PL_savestack_ix = 0;	442	PL_savestack_ix = 0;
514	PL_savestack_max = 96;	443	PL_savestack_max = 64;
515		444
		445	#if !PERL_VERSION_ATLEAST (5,9,0)
516	New(54,PL_retstack,8,OP*);	446	New(54,PL_retstack,16,OP*);
517	PL_retstack_ix = 0;	447	PL_retstack_ix = 0;
518	PL_retstack_max = 8;	448	PL_retstack_max = 16;
		449	#endif
519	}	450	}
520		451
521	/*	452	/*
522	* destroy the stacks, the callchain etc...	453	* destroy the stacks, the callchain etc...
523	* still there is a memleak of 128 bytes...
524	*/	454	*/
525	STATIC void	455	static void
526	destroy_stacks(pTHX)	456	coro_destroy_stacks ()
527	{	457	{
528	if (!IN_DESTRUCT)	458	if (!IN_DESTRUCT)
529	{	459	{
530	/* is this ugly, I ask? */	460	/* restore all saved variables and stuff */
531	while (PL_scopestack_ix)	461	LEAVE_SCOPE (0);
532	LEAVE;	462	assert (PL_tmps_floor == -1);
533		463
534	/* sure it is, but more important: is it correct?? :/ */	464	/* free all temporaries */
535	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
536	FREETMPS;	465	FREETMPS;
		466	assert (PL_tmps_ix == -1);
		467
		468	POPSTACK_TO (PL_mainstack);
537	}	469	}
538		470
539	while (PL_curstackinfo->si_next)	471	while (PL_curstackinfo->si_next)
540	PL_curstackinfo = PL_curstackinfo->si_next;	472	PL_curstackinfo = PL_curstackinfo->si_next;
541		473
542	while (PL_curstackinfo)	474	while (PL_curstackinfo)
543	{	475	{
544	PERL_SI *p = PL_curstackinfo->si_prev;	476	PERL_SI *p = PL_curstackinfo->si_prev;
545		477
546	{
547	dSP;
548	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
549	PUTBACK; /* possibly superfluous */
550	}
551
552	if (!IN_DESTRUCT)	478	if (!IN_DESTRUCT)
553	{
554	dounwind(-1);
555	SvREFCNT_dec(PL_curstackinfo->si_stack);	479	SvREFCNT_dec (PL_curstackinfo->si_stack);
556	}
557		480
558	Safefree(PL_curstackinfo->si_cxstack);	481	Safefree (PL_curstackinfo->si_cxstack);
559	Safefree(PL_curstackinfo);	482	Safefree (PL_curstackinfo);
560	PL_curstackinfo = p;	483	PL_curstackinfo = p;
561	}	484	}
562		485
563	Safefree(PL_tmps_stack);	486	Safefree (PL_tmps_stack);
564	Safefree(PL_markstack);	487	Safefree (PL_markstack);
565	Safefree(PL_scopestack);	488	Safefree (PL_scopestack);
566	Safefree(PL_savestack);	489	Safefree (PL_savestack);
		490	#if !PERL_VERSION_ATLEAST (5,9,0)
567	Safefree(PL_retstack);	491	Safefree (PL_retstack);
568	}
569
570	static void
571	allocate_stack (Coro__State ctx, int alloc)
572	{
573	coro_stack *stack;
574
575	New (0, stack, 1, coro_stack);
576
577	stack->refcnt = 1;
578	stack->usecnt = 1;
579	stack->gencnt = ctx->gencnt = 0;
580	if (alloc)
581	{
582	#if HAVE_MMAP
583	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
584	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
585	if (stack->sptr == (void *)-1)
586	#endif	492	#endif
587	{
588	/FIXME//D//* reasonable stack size! */
589	stack->ssize = -4096 * sizeof (long);
590	New (0, stack->sptr, 4096, long);
591	}
592	}
593	else
594	stack->sptr = 0;
595
596	ctx->stack = stack;
597	}	493	}
598
599	static void
600	deallocate_stack (Coro__State ctx)
601	{
602	coro_stack *stack = ctx->stack;
603
604	ctx->stack = 0;
605
606	if (stack)
607	{
608	if (!--stack->refcnt)
609	{
610	#ifdef HAVE_MMAP
611	if (stack->ssize > 0 && stack->sptr)
612	munmap (stack->sptr, stack->ssize);
613	else
614	#endif	494	#endif
615	Safefree (stack->sptr);
616		495
617	Safefree (stack);
618	}
619	else if (ctx->gencnt == stack->gencnt)
620	--stack->usecnt;
621	}
622	}
623
624	static void	496	static void
625	setup_coro (void *arg)	497	setup_coro (struct coro *coro)
626	{	498	{
627	/*	499	/*
628	* emulate part of the perl startup here.	500	* emulate part of the perl startup here.
629	*/	501	*/
		502
		503	coro_init_stacks ();
		504
		505	PL_curcop = &PL_compiling;
		506	PL_in_eval = EVAL_NULL;
		507	PL_curpm = 0;
		508	PL_localizing = 0;
		509	PL_dirty = 0;
		510	PL_restartop = 0;
		511
		512	{
		513	dSP;
		514	LOGOP myop;
		515
		516	SvREFCNT_dec (GvAV (PL_defgv));
		517	GvAV (PL_defgv) = coro->args; coro->args = 0;
		518
		519	Zero (&myop, 1, LOGOP);
		520	myop.op_next = Nullop;
		521	myop.op_flags = OPf_WANT_VOID;
		522
		523	PUSHMARK (SP);
		524	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		525	PUTBACK;
		526	PL_op = (OP *)&myop;
		527	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		528	SPAGAIN;
		529	}
		530
		531	ENTER; /* necessary e.g. for dounwind */
		532	}
		533
		534	static void
		535	free_coro_mortal ()
		536	{
		537	if (coro_mortal)
		538	{
		539	SvREFCNT_dec (coro_mortal);
		540	coro_mortal = 0;
		541	}
		542	}
		543
		544	/* inject a fake call to Coro::State::_cctx_init into the execution */
		545	static void NOINLINE
		546	prepare_cctx (coro_cctx *cctx)
		547	{
630	dSP;	548	dSP;
631	Coro__State ctx = (Coro__State)arg;	549	LOGOP myop;
632	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
633		550
634	coro_init_stacks (aTHX);	551	Zero (&myop, 1, LOGOP);
635	/PL_curcop = 0;/	552	myop.op_next = PL_op;
636	/PL_in_eval = PL_in_eval;/ /* inherit */	553	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
637	SvREFCNT_dec (GvAV (PL_defgv));
638	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
639		554
		555	PUSHMARK (SP);
		556	EXTEND (SP, 2);
		557	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		558	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		559	PUTBACK;
		560	PL_op = (OP *)&myop;
		561	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
640	SPAGAIN;	562	SPAGAIN;
641
642	if (ctx->stack)
643	{
644	ctx->cursp = 0;
645
646	PUSHMARK(SP);
647	PUTBACK;
648	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
649
650	if (SvTRUE (ERRSV))
651	croak (NULL);
652	else
653	croak ("FATAL: CCTXT coroutine returned!");
654	}
655	else
656	{
657	UNOP myop;
658
659	PL_op = (OP *)&myop;
660
661	Zero(&myop, 1, UNOP);
662	myop.op_next = Nullop;
663	myop.op_flags = OPf_WANT_VOID;
664
665	PUSHMARK(SP);
666	XPUSHs (sub_init);
667	/*
668	* the next line is slightly wrong, as PL_op->op_next
669	* is actually being executed so we skip the first op.
670	* that doesn't matter, though, since it is only
671	* pp_nextstate and we never return...
672	* ah yes, and I don't care anyways ;)
673	*/
674	PUTBACK;
675	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
676	SPAGAIN;
677
678	ENTER; /* necessary e.g. for dounwind */
679	}
680	}	563	}
681		564
682	static void	565	static void
683	continue_coro (void *arg)	566	coro_run (void *arg)
684	{	567	{
		568	/* coro_run is the alternative tail of transfer(), so unlock here. */
		569	UNLOCK;
		570
685	/*	571	/*
686	* this is a _very_ stripped down perl interpreter ;)	572	* this is a _very_ stripped down perl interpreter ;)
687	*/	573	*/
688	Coro__State ctx = (Coro__State)arg;
689	JMPENV coro_start_env;
690
691	PL_top_env = &ctx->start_env;	574	PL_top_env = &PL_start_env;
692		575
693	ctx->cursp = 0;	576	/* inject call to cctx_init */
694	PL_op = PL_op->op_next;	577	prepare_cctx ((coro_cctx *)arg);
695	CALLRUNOPS(aTHX);
696		578
		579	/* somebody will hit me for both perl_run and PL_restartop */
		580	PL_restartop = PL_op;
		581	perl_run (PL_curinterp);
		582
		583	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
697	abort ();	584	abort ();
698	}	585	}
699		586
700	STATIC void	587	static coro_cctx *
		588	cctx_new ()
		589	{
		590	coro_cctx *cctx;
		591
		592	++cctx_count;
		593
		594	Newz (0, cctx, 1, coro_cctx);
		595
		596	#if HAVE_MMAP
		597
		598	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		599	/* mmap supposedly does allocate-on-write for us */
		600	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		601
		602	if (cctx->sptr == (void *)-1)
		603	{
		604	perror ("FATAL: unable to mmap stack for coroutine");
		605	_exit (EXIT_FAILURE);
		606	}
		607
		608	# if STACKGUARD
		609	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		610	# endif
		611
		612	#else
		613
		614	cctx->ssize = STACKSIZE * (long)sizeof (long);
		615	New (0, cctx->sptr, STACKSIZE, long);
		616
		617	if (!cctx->sptr)
		618	{
		619	perror ("FATAL: unable to malloc stack for coroutine");
		620	_exit (EXIT_FAILURE);
		621	}
		622
		623	#endif
		624
		625	#if USE_VALGRIND
		626	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		627	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		628	cctx->ssize + (char *)cctx->sptr
		629	);
		630	#endif
		631
		632	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		633
		634	return cctx;
		635	}
		636
		637	static void
		638	cctx_destroy (coro_cctx *cctx)
		639	{
		640	if (!cctx)
		641	return;
		642
		643	--cctx_count;
		644
		645	#if USE_VALGRIND
		646	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		647	#endif
		648
		649	#if HAVE_MMAP
		650	munmap (cctx->sptr, cctx->ssize);
		651	#else
		652	Safefree (cctx->sptr);
		653	#endif
		654
		655	Safefree (cctx);
		656	}
		657
		658	static coro_cctx *
		659	cctx_get ()
		660	{
		661	coro_cctx *cctx;
		662
		663	if (cctx_first)
		664	{
		665	cctx = cctx_first;
		666	cctx_first = cctx->next;
		667	--cctx_idle;
		668	}
		669	else
		670	{
		671	cctx = cctx_new ();
		672	PL_op = PL_op->op_next;
		673	}
		674
		675	return cctx;
		676	}
		677
		678	static void
		679	cctx_put (coro_cctx *cctx)
		680	{
		681	/* free another cctx if overlimit */
		682	if (cctx_idle >= MAX_IDLE_CCTX)
		683	{
		684	coro_cctx *first = cctx_first;
		685	cctx_first = first->next;
		686	--cctx_idle;
		687
		688	assert (!first->inuse);
		689	cctx_destroy (first);
		690	}
		691
		692	++cctx_idle;
		693	cctx->next = cctx_first;
		694	cctx_first = cctx;
		695	}
		696
		697	/* never call directly, always through the coro_state_transfer global variable */
		698	static void NOINLINE
701	transfer(pTHX_ struct coro prev, struct coro next, int flags)	699	transfer (struct coro prev, struct coro next)
702	{	700	{
703	dSTACKLEVEL;	701	dSTACKLEVEL;
704	static struct coro *xnext;
705		702
		703	/* sometimes transfer is only called to set idle_sp */
		704	if (!next)
		705	{
		706	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		707	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		708	}
706	if (prev != next)	709	else if (prev != next)
707	{	710	{
708	xnext = next;	711	coro_cctx *prev__cctx;
709		712
710	if (next->mainstack)	713	if (prev->flags & CF_NEW)
711	{	714	{
712	SAVE (prev, flags);	715	/* create a new empty context */
713	LOAD (next);	716	Newz (0, prev->cctx, 1, coro_cctx);
714		717	prev->cctx->inuse = 1;
715	/* mark this state as in-use */	718	prev->flags &= ~CF_NEW;
716	next->mainstack = 0;	719	prev->flags \|= CF_RUNNING;
717	next->tmps_ix = -2;
718
719	/* stacklevel changed? if yes, grab the stack for us! */
720	if (flags & TRANSFER_SAVE_CCTXT)
721	{
722	if (!prev->stack)
723	allocate_stack (prev, 0);
724	else if (prev->cursp != stacklevel
725	&& prev->stack->usecnt > 1)
726	{
727	prev->gencnt = ++prev->stack->gencnt;
728	prev->stack->usecnt = 1;
729	}
730
731	/* has our stack been invalidated? */
732	if (next->stack && next->stack->gencnt != next->gencnt)
733	{
734	deallocate_stack (next);
735	allocate_stack (next, 1);
736	coro_create (&(next->stack->cctx),
737	continue_coro, (void *)next,
738	next->stack->sptr, labs (next->stack->ssize));
739	}
740
741	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
742	/* don't add any code here */
743	}
744
745	}	720	}
746	else if (next->tmps_ix == -2)	721
747	croak ("tried to transfer to running coroutine");	722	/TODO: must not croak here /
		723	if (!prev->flags & CF_RUNNING)
		724	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		725
		726	if (next->flags & CF_RUNNING)
		727	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		728
		729	prev->flags &= ~CF_RUNNING;
		730	next->flags \|= CF_RUNNING;
		731
		732	LOCK;
		733
		734	if (next->flags & CF_NEW)
		735	{
		736	/* need to start coroutine */
		737	next->flags &= ~CF_NEW;
		738	/* first get rid of the old state */
		739	save_perl (prev);
		740	/* setup coroutine call */
		741	setup_coro (next);
		742	/* need a new stack */
		743	assert (!next->cctx);
		744	}
748	else	745	else
749	{	746	{
750	SAVE (prev, -1); /* first get rid of the old state */	747	/* coroutine already started */
751		748	save_perl (prev);
752	if (flags & TRANSFER_SAVE_CCTXT)	749	load_perl (next);
753	{
754	if (!prev->stack)
755	allocate_stack (prev, 0);
756
757	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
758	{
759	PL_top_env = &next->start_env;
760
761	setup_coro (next);
762
763	prev->stack->refcnt++;
764	prev->stack->usecnt++;
765	next->stack = prev->stack;
766	next->gencnt = prev->gencnt;
767	}
768	else
769	{
770	assert (!next->stack);
771	allocate_stack (next, 1);
772	coro_create (&(next->stack->cctx),
773	setup_coro, (void *)next,
774	next->stack->sptr, labs (next->stack->ssize));
775	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
776	/* don't add any code here */
777	}
778	}
779	else
780	setup_coro (next);
781	}	750	}
782		751
783	/*	752	prev__cctx = prev->cctx;
784	* xnext is now either prev or next, depending on wether	753
785	* we switched the c stack or not. that's why I use a global	754	/* possibly "free" the cctx */
786	* variable, that should become thread-specific at one point.	755	if (prev__cctx->idle_sp == STACKLEVEL)
787	*/	756	{
788	xnext->cursp = stacklevel;	757	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		758	assert (PL_top_env == prev__cctx->top_env);
		759
		760	prev->cctx = 0;
		761
		762	cctx_put (prev__cctx);
		763	prev__cctx->inuse = 0;
		764	}
		765
		766	if (!next->cctx)
		767	{
		768	next->cctx = cctx_get ();
		769	assert (!next->cctx->inuse);
		770	next->cctx->inuse = 1;
		771	}
		772
		773	if (prev__cctx != next->cctx)
		774	{
		775	prev__cctx->top_env = PL_top_env;
		776	PL_top_env = next->cctx->top_env;
		777	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		778	}
		779
		780	free_coro_mortal ();
		781
		782	UNLOCK;
789	}	783	}
		784	}
790		785
791	if (coro_mortal)	786	struct transfer_args
		787	{
		788	struct coro prev, next;
		789	};
		790
		791	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
		792
		793	static void
		794	coro_state_destroy (struct coro *coro)
		795	{
		796	if (coro->refcnt--)
		797	return;
		798
		799	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	800	{
793	SvREFCNT_dec (coro_mortal);	801	struct coro temp;
		802	Zero (&temp, 1, struct coro);
		803	temp.save = CORO_SAVE_ALL;
		804
		805	if (coro->flags & CF_RUNNING)
		806	croak ("FATAL: tried to destroy currently running coroutine");
		807
		808	save_perl (&temp);
		809	load_perl (coro);
		810
		811	coro_destroy_stacks ();
		812
		813	load_perl (&temp); /* this will get rid of defsv etc.. */
		814
794	coro_mortal = 0;	815	coro->mainstack = 0;
795	}	816	}
796	}
797		817
798	#define SV_CORO(sv,func) \	818	cctx_destroy (coro->cctx);
799	do { \	819	SvREFCNT_dec (coro->args);
800	if (SvROK (sv)) \	820	Safefree (coro);
801	sv = SvRV (sv); \	821	}
802	\
803	if (SvTYPE(sv) == SVt_PVHV) \
804	{ \
805	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
806	\
807	if (!he) \
808	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
809	\
810	(sv) = SvRV (HeVAL(he)); \
811	} \
812	\
813	/* must also be changed inside Coro::Cont::yield */ \
814	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
815	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
816	\
817	} while(0)
818		822
819	#define SvSTATE(sv) (struct coro *)SvIV (sv)
820
821	static void	823	static int
		824	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		825	{
		826	struct coro coro = (struct coro )mg->mg_ptr;
		827	mg->mg_ptr = 0;
		828
		829	coro_state_destroy (coro);
		830
		831	return 0;
		832	}
		833
		834	static int
		835	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		836	{
		837	struct coro coro = (struct coro )mg->mg_ptr;
		838
		839	++coro->refcnt;
		840
		841	return 0;
		842	}
		843
		844	static MGVTBL coro_state_vtbl = {
		845	0, 0, 0, 0,
		846	coro_state_clear,
		847	0,
		848	#ifdef MGf_DUP
		849	coro_state_dup,
		850	#else
		851	# define MGf_DUP 0
		852	#endif
		853	};
		854
		855	static struct coro *
		856	SvSTATE (SV *coro)
		857	{
		858	HV *stash;
		859	MAGIC *mg;
		860
		861	if (SvROK (coro))
		862	coro = SvRV (coro);
		863
		864	stash = SvSTASH (coro);
		865	if (stash != coro_stash && stash != coro_state_stash)
		866	{
		867	/* very slow, but rare, check */
		868	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		869	croak ("Coro::State object required");
		870	}
		871
		872	mg = SvMAGIC (coro);
		873	assert (mg->mg_type == PERL_MAGIC_ext);
		874	return (struct coro *)mg->mg_ptr;
		875	}
		876
		877	static void
		878	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		879	{
		880	ta->prev = SvSTATE (prev_sv);
		881	ta->next = SvSTATE (next_sv);
		882	}
		883
		884	static void
822	api_transfer(pTHX_ SV prev, SV next, int flags)	885	api_transfer (SV prev_sv, SV next_sv)
823	{	886	{
824	SV_CORO (prev, "Coro::transfer");	887	struct transfer_args ta;
825	SV_CORO (next, "Coro::transfer");
826		888
827	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	889	prepare_transfer (&ta, prev_sv, next_sv);
		890	TRANSFER (ta);
		891	}
		892
		893	static int
		894	api_save (SV *coro_sv, int new_save)
		895	{
		896	struct coro *coro = SvSTATE (coro_sv);
		897	int old_save = coro->save;
		898
		899	if (new_save >= 0)
		900	coro->save = new_save;
		901
		902	return old_save;
828	}	903	}
829		904
830	/ Coro ******************************************************************/	905	/ Coro ******************************************************************/
831		906
832	#define PRIO_MAX 3	907	#define PRIO_MAX 3
…		…
835	#define PRIO_LOW -1	910	#define PRIO_LOW -1
836	#define PRIO_IDLE -3	911	#define PRIO_IDLE -3
837	#define PRIO_MIN -4	912	#define PRIO_MIN -4
838		913
839	/* for Coro.pm */	914	/* for Coro.pm */
840	static GV coro_current, coro_idle;	915	static SV *coro_current;
841	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	916	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
842	static int coro_nready;	917	static int coro_nready;
843		918
844	static void	919	static void
845	coro_enq (SV *sv)	920	coro_enq (SV *coro_sv)
846	{	921	{
847	if (SvTYPE (sv) == SVt_PVHV)
848	{
849	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
850	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
851
852	prio = prio > PRIO_MAX ? PRIO_MAX
853	: prio < PRIO_MIN ? PRIO_MIN
854	: prio;
855
856	av_push (coro_ready [prio - PRIO_MIN], sv);	922	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
857	coro_nready++;	923	coro_nready++;
858
859	return;
860	}
861
862	croak ("Coro::ready tried to enqueue something that is not a coroutine");
863	}	924	}
864		925
865	static SV *	926	static SV *
866	coro_deq (int min_prio)	927	coro_deq (int min_prio)
867	{	928	{
…		…
870	min_prio -= PRIO_MIN;	931	min_prio -= PRIO_MIN;
871	if (min_prio < 0)	932	if (min_prio < 0)
872	min_prio = 0;	933	min_prio = 0;
873		934
874	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	935	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
875	if (av_len (coro_ready[prio]) >= 0)	936	if (AvFILLp (coro_ready [prio]) >= 0)
876	{	937	{
877	coro_nready--;	938	coro_nready--;
878	return av_shift (coro_ready[prio]);	939	return av_shift (coro_ready [prio]);
879	}	940	}
880		941
881	return 0;	942	return 0;
882	}	943	}
883		944
884	static void	945	static int
885	api_ready (SV *coro)	946	api_ready (SV *coro_sv)
886	{	947	{
		948	struct coro *coro;
		949
887	if (SvROK (coro))	950	if (SvROK (coro_sv))
888	coro = SvRV (coro);	951	coro_sv = SvRV (coro_sv);
889		952
		953	coro = SvSTATE (coro_sv);
		954
		955	if (coro->flags & CF_READY)
		956	return 0;
		957
		958	#if 0 /* this is actually harmless */
		959	if (coro->flags & CF_RUNNING)
		960	croak ("Coro::ready called on currently running coroutine");
		961	#endif
		962
		963	coro->flags \|= CF_READY;
		964
		965	LOCK;
890	coro_enq (SvREFCNT_inc (coro));	966	coro_enq (SvREFCNT_inc (coro_sv));
		967	UNLOCK;
		968
		969	return 1;
		970	}
		971
		972	static int
		973	api_is_ready (SV *coro_sv)
		974	{
		975	return !!SvSTATE (coro_sv)->flags & CF_READY;
		976	}
		977
		978	static void
		979	prepare_schedule (struct transfer_args *ta)
		980	{
		981	SV prev, next;
		982
		983	for (;;)
		984	{
		985	LOCK;
		986	next = coro_deq (PRIO_MIN);
		987	UNLOCK;
		988
		989	if (next)
		990	break;
		991
		992	{
		993	dSP;
		994
		995	ENTER;
		996	SAVETMPS;
		997
		998	PUSHMARK (SP);
		999	PUTBACK;
		1000	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1001
		1002	FREETMPS;
		1003	LEAVE;
		1004	}
		1005	}
		1006
		1007	prev = SvRV (coro_current);
		1008	SvRV_set (coro_current, next);
		1009
		1010	/* free this only after the transfer */
		1011	LOCK;
		1012	free_coro_mortal ();
		1013	UNLOCK;
		1014	coro_mortal = prev;
		1015
		1016	assert (!SvROK(prev));//D
		1017	assert (!SvROK(next));//D
		1018
		1019	ta->prev = SvSTATE (prev);
		1020	ta->next = SvSTATE (next);
		1021
		1022	assert (ta->next->flags & CF_READY);
		1023	ta->next->flags &= ~CF_READY;
		1024	}
		1025
		1026	static void
		1027	prepare_cede (struct transfer_args *ta)
		1028	{
		1029	api_ready (coro_current);
		1030
		1031	prepare_schedule (ta);
891	}	1032	}
892		1033
893	static void	1034	static void
894	api_schedule (void)	1035	api_schedule (void)
895	{	1036	{
896	SV prev, next;	1037	struct transfer_args ta;
897		1038
898	prev = SvRV (GvSV (coro_current));	1039	prepare_schedule (&ta);
899	next = coro_deq (PRIO_MIN);	1040	TRANSFER (ta);
900
901	if (!next)
902	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
903
904	/* free this only after the transfer */
905	coro_mortal = prev;
906	SV_CORO (prev, "Coro::schedule");
907
908	SvRV (GvSV (coro_current)) = next;
909
910	SV_CORO (next, "Coro::schedule");
911
912	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
913	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
914	}	1041	}
915		1042
916	static void	1043	static void
917	api_cede (void)	1044	api_cede (void)
918	{	1045	{
919	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	1046	struct transfer_args ta;
920		1047
921	api_schedule ();	1048	prepare_cede (&ta);
		1049	TRANSFER (ta);
922	}	1050	}
923		1051
924	MODULE = Coro::State PACKAGE = Coro::State	1052	MODULE = Coro::State PACKAGE = Coro::State
925		1053
926	PROTOTYPES: ENABLE	1054	PROTOTYPES: DISABLE
927		1055
928	BOOT:	1056	BOOT:
929	{ /* {} necessary for stoopid perl-5.6.x */	1057	{
930	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1058	#ifdef USE_ITHREADS
931	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1059	MUTEX_INIT (&coro_mutex);
		1060	#endif
		1061	BOOT_PAGESIZE;
		1062
932	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1063	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
933		1064
934	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1065	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
935	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1066	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
936	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1067	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1068	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
937	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1069	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
938
939	if (!padlist_cache)
940	padlist_cache = newHV ();
941		1070
942	main_mainstack = PL_mainstack;	1071	main_mainstack = PL_mainstack;
943		1072
944	coroapi.ver = CORO_API_VERSION;	1073	coroapi.ver = CORO_API_VERSION;
945	coroapi.transfer = api_transfer;	1074	coroapi.transfer = api_transfer;
946	}
947		1075
948	Coro::State	1076	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
949	_newprocess(args)	1077	}
950	SV * args	1078
951	PROTOTYPE: $	1079	SV *
		1080	new (char *klass, ...)
952	CODE:	1081	CODE:
953	Coro__State coro;	1082	{
		1083	struct coro *coro;
		1084	HV *hv;
		1085	int i;
954		1086
955	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
956	croak ("Coro::State::_newprocess expects an arrayref");
957
958	Newz (0, coro, 1, struct coro);	1087	Newz (0, coro, 1, struct coro);
		1088	coro->args = newAV ();
		1089	coro->save = CORO_SAVE_ALL;
		1090	coro->flags = CF_NEW;
959		1091
960	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1092	hv = newHV ();
961	coro->mainstack = 0; /* actual work is done inside transfer */	1093	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
962	coro->stack = 0;	1094	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
963		1095
964	/* same as JMPENV_BOOTSTRAP */	1096	for (i = 1; i < items; i++)
965	/* we might be able to recycle start_env, but safe is safe */	1097	av_push (coro->args, newSVsv (ST (i)));
966	//Zero(&coro->start_env, 1, JMPENV);	1098	}
967	coro->start_env.je_ret = -1;
968	coro->start_env.je_mustcatch = TRUE;
969
970	RETVAL = coro;
971	OUTPUT:	1099	OUTPUT:
972	RETVAL	1100	RETVAL
973		1101
		1102	int
		1103	save (SV *coro, int new_save = -1)
		1104	CODE:
		1105	RETVAL = api_save (coro, new_save);
		1106	OUTPUT:
		1107	RETVAL
		1108
974	void	1109	void
975	transfer(prev, next, flags)	1110	_set_stacklevel (...)
976	SV *prev	1111	ALIAS:
977	SV *next	1112	Coro::State::transfer = 1
978	int flags	1113	Coro::schedule = 2
979	PROTOTYPE: @	1114	Coro::cede = 3
980	CODE:	1115	CODE:
981	PUTBACK;	1116	{
982	SV_CORO (next, "Coro::transfer");	1117	struct transfer_args ta;
983	SV_CORO (prev, "Coro::transfer");	1118
984	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1119	switch (ix)
985	SPAGAIN;	1120	{
		1121	case 0:
		1122	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1123	ta.next = 0;
		1124	break;
		1125
		1126	case 1:
		1127	if (items != 2)
		1128	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1129
		1130	prepare_transfer (&ta, ST (0), ST (1));
		1131	break;
		1132
		1133	case 2:
		1134	prepare_schedule (&ta);
		1135	break;
		1136
		1137	case 3:
		1138	prepare_cede (&ta);
		1139	break;
		1140	}
		1141
		1142	TRANSFER (ta);
		1143	}
986		1144
987	void	1145	void
988	DESTROY(coro)	1146	_clone_state_from (SV dst, SV src)
989	Coro::State coro	1147	CODE:
990	CODE:	1148	{
		1149	struct coro *coro_src = SvSTATE (src);
991		1150
992	if (coro->mainstack && coro->mainstack != main_mainstack)	1151	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
993	{
994	struct coro temp;
995		1152
996	PUTBACK;	1153	++coro_src->refcnt;
997	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1154	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
998	LOAD(aTHX_ coro);	1155	}
999	SPAGAIN;
1000
1001	destroy_stacks (aTHX);
1002
1003	LOAD((&temp)); /* this will get rid of defsv etc.. */
1004	SPAGAIN;
1005
1006	coro->mainstack = 0;
1007	}
1008
1009	deallocate_stack (coro);
1010	SvREFCNT_dec (coro->args);
1011	Safefree (coro);
1012		1156
1013	void	1157	void
1014	flush()
1015	CODE:
1016	#ifdef MAY_FLUSH
1017	flush_padlist_cache ();
1018	#endif
1019
1020	void
1021	_exit(code)	1158	_exit (code)
1022	int code	1159	int code
1023	PROTOTYPE: $	1160	PROTOTYPE: $
1024	CODE:	1161	CODE:
1025	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
1026	_exit (code);	1162	_exit (code);
1027	#else
1028	signal (SIGTERM, SIG_DFL);
1029	raise (SIGTERM);
1030	exit (code);
1031	#endif
1032		1163
1033	MODULE = Coro::State PACKAGE = Coro::Cont	1164	int
		1165	cctx_count ()
		1166	CODE:
		1167	RETVAL = cctx_count;
		1168	OUTPUT:
		1169	RETVAL
1034		1170
1035	# this is slightly dirty (should expose a c-level api)	1171	int
1036		1172	cctx_idle ()
1037	void	1173	CODE:
1038	yield(...)	1174	RETVAL = cctx_idle;
1039	PROTOTYPE: @	1175	OUTPUT:
1040	CODE:	1176	RETVAL
1041	static SV *returnstk;
1042	SV *sv;
1043	AV *defav = GvAV (PL_defgv);
1044	struct coro prev, next;
1045
1046	if (!returnstk)
1047	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
1048
1049	/* set up @_ -- ugly */
1050	av_clear (defav);
1051	av_fill (defav, items - 1);
1052	while (items--)
1053	av_store (defav, items, SvREFCNT_inc (ST(items)));
1054
1055	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1056	sv = av_pop ((AV *)SvRV (returnstk));
1057	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
1058	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
1059	SvREFCNT_dec (sv);
1060
1061	transfer(aTHX_ prev, next, 0);
1062		1177
1063	MODULE = Coro::State PACKAGE = Coro	1178	MODULE = Coro::State PACKAGE = Coro
1064		1179
1065	# this is slightly dirty (should expose a c-level api)
1066
1067	BOOT:	1180	BOOT:
1068	{	1181	{
1069	int i;	1182	int i;
		1183
1070	HV *stash = gv_stashpv ("Coro", TRUE);	1184	coro_stash = gv_stashpv ("Coro", TRUE);
1071		1185
1072	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1186	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1073	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1187	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1074	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1188	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1075	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1189	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1076	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1190	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1077	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1191	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1078		1192
1079	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1193	coro_current = get_sv ("Coro::current", FALSE);
1080	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1194	SvREADONLY_on (coro_current);
1081		1195
1082	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1196	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1083	coro_ready[i] = newAV ();	1197	coro_ready[i] = newAV ();
1084		1198
1085	{	1199	{
1086	SV *sv = perl_get_sv("Coro::API", 1);	1200	SV *sv = perl_get_sv("Coro::API", 1);
1087		1201
1088	coroapi.schedule = api_schedule;	1202	coroapi.schedule = api_schedule;
		1203	coroapi.save = api_save;
1089	coroapi.cede = api_cede;	1204	coroapi.cede = api_cede;
1090	coroapi.ready = api_ready;	1205	coroapi.ready = api_ready;
		1206	coroapi.is_ready = api_is_ready;
1091	coroapi.nready = &coro_nready;	1207	coroapi.nready = &coro_nready;
1092	coroapi.current = coro_current;	1208	coroapi.current = coro_current;
1093		1209
1094	GCoroAPI = &coroapi;	1210	GCoroAPI = &coroapi;
1095	sv_setiv(sv, (IV)&coroapi);	1211	sv_setiv (sv, (IV)&coroapi);
1096	SvREADONLY_on(sv);	1212	SvREADONLY_on (sv);
1097	}	1213	}
1098	}	1214	}
1099		1215
1100	void	1216	void
1101	ready(self)	1217	_set_current (SV *current)
1102	SV * self
1103	PROTOTYPE: $	1218	PROTOTYPE: $
1104	CODE:	1219	CODE:
1105	api_ready (self);	1220	SvREFCNT_dec (SvRV (coro_current));
		1221	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1106		1222
1107	int	1223	int
		1224	prio (Coro::State coro, int newprio = 0)
		1225	ALIAS:
		1226	nice = 1
		1227	CODE:
		1228	{
		1229	RETVAL = coro->prio;
		1230
		1231	if (items > 1)
		1232	{
		1233	if (ix)
		1234	newprio += coro->prio;
		1235
		1236	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1237	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1238
		1239	coro->prio = newprio;
		1240	}
		1241	}
		1242
		1243	SV *
		1244	ready (SV *self)
		1245	PROTOTYPE: $
		1246	CODE:
		1247	RETVAL = boolSV (api_ready (self));
		1248	OUTPUT:
		1249	RETVAL
		1250
		1251	SV *
		1252	is_ready (SV *self)
		1253	PROTOTYPE: $
		1254	CODE:
		1255	RETVAL = boolSV (api_is_ready (self));
		1256	OUTPUT:
		1257	RETVAL
		1258
		1259	int
1108	nready(...)	1260	nready (...)
1109	PROTOTYPE:	1261	PROTOTYPE:
1110	CODE:	1262	CODE:
1111	RETVAL = coro_nready;	1263	RETVAL = coro_nready;
1112	OUTPUT:	1264	OUTPUT:
1113	RETVAL	1265	RETVAL
1114		1266
		1267	MODULE = Coro::State PACKAGE = Coro::AIO
		1268
		1269	SV *
		1270	_get_state ()
		1271	CODE:
		1272	{
		1273	struct io_state *data;
		1274
		1275	RETVAL = newSV (sizeof (struct io_state));
		1276	data = (struct io_state *)SvPVX (RETVAL);
		1277	SvCUR_set (RETVAL, sizeof (struct io_state));
		1278	SvPOK_only (RETVAL);
		1279
		1280	data->errorno = errno;
		1281	data->laststype = PL_laststype;
		1282	data->laststatval = PL_laststatval;
		1283	data->statcache = PL_statcache;
		1284	}
		1285	OUTPUT:
		1286	RETVAL
		1287
1115	void	1288	void
1116	schedule(...)	1289	_set_state (char *data_)
1117	PROTOTYPE:	1290	PROTOTYPE: $
1118	CODE:	1291	CODE:
1119	api_schedule ();	1292	{
		1293	struct io_state data = (void )data_;
1120		1294
1121	void	1295	errno = data->errorno;
1122	cede(...)	1296	PL_laststype = data->laststype;
1123	PROTOTYPE:	1297	PL_laststatval = data->laststatval;
1124	CODE:	1298	PL_statcache = data->statcache;
1125	api_cede ();	1299	}
1126		1300

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Comparing Coro/Coro/State.xs (file contents): Revision 1.47 by pcg, Sat Nov 15 03:53:10 2003 UTC vs. Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.47 by pcg, Sat Nov 15 03:53:10 2003 UTC vs.
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC