ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.42 by root, Mon Dec 31 20:41:45 2001 UTC vs.
Revision 1.125 by root, Mon Dec 11 20:54:45 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 "libcoro/coro.c"	7	#include "patchlevel.h"
6		8
		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)
		23	# ifndef PL_ppaddr
		24	# define PL_ppaddr ppaddr
		25	# endif
		26	# ifndef call_sv
		27	# define call_sv perl_call_sv
		28	# endif
		29	# ifndef get_sv
		30	# define get_sv perl_get_sv
		31	# endif
		32	# ifndef get_cv
		33	# define get_cv perl_get_cv
		34	# endif
		35	# ifndef IS_PADGV
		36	# define IS_PADGV(v) 0
		37	# endif
		38	# ifndef IS_PADCONST
		39	# define IS_PADCONST(v) 0
		40	# endif
		41	#endif
		42
		43	/* 5.8.7 */
		44	#ifndef SvRV_set
		45	# define SvRV_set(s,v) SvRV(s) = (v)
		46	#endif
		47
7	#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
8		59
9	#ifdef HAVE_MMAP	60	#ifdef HAVE_MMAP
10	# include <unistd.h>	61	# include <unistd.h>
11	# include <sys/mman.h>	62	# include <sys/mman.h>
12	# ifndef MAP_ANONYMOUS	63	# ifndef MAP_ANONYMOUS
…		…
14	# define MAP_ANONYMOUS MAP_ANON	65	# define MAP_ANONYMOUS MAP_ANON
15	# else	66	# else
16	# undef HAVE_MMAP	67	# undef HAVE_MMAP
17	# endif	68	# endif
18	# 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
19	#endif	77	# endif
20		78	#else
21	#define MAY_FLUSH /* increases codesize and is rarely used */	79	# define PAGESIZE 0
22		80	# define BOOT_PAGESIZE (void)0
23	#define SUB_INIT "Coro::State::initialize"	81	#endif
24	#define UCORO_STATE "_coro_state"
25		82
26	/* 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
27	* 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
28	* and should be unique. */	85	* and should be unique. */
		86	#define dSTACKLEVEL int stacklevel
29	#define dSTACKLEVEL void *stacklevel = &stacklevel	87	#define STACKLEVEL ((void *)&stacklevel)
30		88
31	#define IN_DESTRUCT (PL_main_cv == Nullcv)	89	#define IN_DESTRUCT (PL_main_cv == Nullcv)
32		90
33	#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))
34		98
35	#include "CoroAPI.h"	99	#include "CoroAPI.h"
36		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
37	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 */
38		122
39	/* 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 */
40	typedef struct {	127	typedef struct coro_cctx {
41	int refcnt; /* pointer reference counter */	128	struct coro_cctx *next;
42	int usecnt; /* shared by how many coroutines */
43	int gencnt; /* generation counter */
44		129
45	coro_context cctx;	130	/* the stack */
46
47	void *sptr;	131	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	132	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;
50		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 */
51	struct coro {	153	struct coro {
52	/* the optional C context */	154	/* the c coroutine allocated to this perl coroutine, if any */
53	coro_stack *stack;	155	coro_cctx *cctx;
54	void *cursp;
55	int gencnt;
56
57	/* optionally saved, might be zero */
58	AV *defav;
59	SV *defsv;
60	SV *errsv;
61
62	/* saved global state not related to stacks */
63	U8 dowarn;
64	I32 in_eval;
65
66	/* the stacks and related info (callchain etc..) */
67	PERL_SI *curstackinfo;
68	AV *curstack;
69	AV *mainstack;
70	SV **stack_sp;
71	OP *op;
72	SV **curpad;
73	SV **stack_base;
74	SV **stack_max;
75	SV **tmps_stack;
76	I32 tmps_floor;
77	I32 tmps_ix;
78	I32 tmps_max;
79	I32 *markstack;
80	I32 *markstack_ptr;
81	I32 *markstack_max;
82	I32 *scopestack;
83	I32 scopestack_ix;
84	I32 scopestack_max;
85	ANY *savestack;
86	I32 savestack_ix;
87	I32 savestack_max;
88	OP **retstack;
89	I32 retstack_ix;
90	I32 retstack_max;
91	COP *curcop;
92	JMPENV *top_env;
93		156
94	/* data associated with this coroutine (initial args) */	157	/* data associated with this coroutine (initial args) */
95	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;
96	};	176	};
97		177
98	typedef struct coro *Coro__State;	178	typedef struct coro *Coro__State;
99	typedef struct coro *Coro__State_or_hashref;	179	typedef struct coro *Coro__State_or_hashref;
100		180
101	static AV *main_mainstack; /* used to differentiate between $main and others */	181	static AV *
102	static HV *coro_state_stash;	182	coro_clone_padlist (CV *cv)
103	static SV *ucoro_state_sv;
104	static U32 ucoro_state_hash;
105	static HV *padlist_cache;
106	static SV *coro_mortal; /* will be freed after next transfer */
107
108	/* mostly copied from op.c:cv_clone2 */
109	STATIC AV *
110	clone_padlist (AV *protopadlist)
111	{	183	{
112	AV *av;	184	AV *padlist = CvPADLIST (cv);
113	I32 ix;
114	AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE);
115	AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE);
116	SV **pname = AvARRAY (protopad_name);
117	SV **ppad = AvARRAY (protopad);
118	I32 fname = AvFILLp (protopad_name);
119	I32 fpad = AvFILLp (protopad);
120	AV *newpadlist, *newpad_name, *newpad;	185	AV *newpadlist, *newpad;
121	SV **npad;
122
123	newpad_name = newAV ();
124	for (ix = fname; ix >= 0; ix--)
125	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
126
127	newpad = newAV ();
128	av_fill (newpad, AvFILLp (protopad));
129	npad = AvARRAY (newpad);
130		186
131	newpadlist = newAV ();	187	newpadlist = newAV ();
132	AvREAL_off (newpadlist);	188	AvREAL_off (newpadlist);
133	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)));
134	av_store (newpadlist, 1, (SV *) newpad);	198	av_store (newpadlist, 1, (SV *)newpad);
135		199
136	av = newAV (); /* will be @_ */	200	return newpadlist;
137	av_extend (av, 0);	201	}
138	av_store (newpad, 0, (SV *) av);
139	AvFLAGS (av) = AVf_REIFY;
140		202
141	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))
142	{	208	{
143	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	209	I32 i = AvFILLp (padlist);
144	if (namesv && namesv != &PL_sv_undef)	210	while (i >= 0)
145	{	211	{
146	char *name = SvPVX (namesv); /* XXX */	212	SV **svp = av_fetch (padlist, i--, FALSE);
147	if (SvFLAGS (namesv) & SVf_FAKE || *name == '&')	213	if (svp)
148	{ /* lexical from outside? */
149	npad[ix] = SvREFCNT_inc (ppad[ix]);
150	}	214	{
151	else
152	{ /* our own lexical */
153	SV *sv;	215	SV *sv;
154	if (*name == '&')	216	while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
155	sv = SvREFCNT_inc (ppad[ix]);	217	SvREFCNT_dec (sv);
156	else if (*name == '@')	218
157	sv = (SV *) newAV ();	219	SvREFCNT_dec (*svp);
158	else if (*name == '%')
159	sv = (SV *) newHV ();
160	else
161	sv = NEWSV (0, 0);
162	if (!SvPADBUSY (sv))
163	SvPADMY_on (sv);
164	npad[ix] = sv;
165	}	220	}
166	}	221	}
167	else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix]))	222
168	{	223	SvREFCNT_dec ((SV*)padlist);
169	npad[ix] = SvREFCNT_inc (ppad[ix]);
170	}
171	else
172	{
173	SV *sv = NEWSV (0, 0);
174	SvPADTMP_on (sv);
175	npad[ix] = sv;
176	}
177	}	224	}
		225	}
178		226
179	#if 0 /* return -ENOTUNDERSTOOD */	227	static int
180	/* 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;
181		232
182	for (ix = fpad; ix > 0; ix--) {	233	/* casting is fun. */
183	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;	234	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
184	if (namesv	235	free_padlist (padlist);
185	&& namesv != &PL_sv_undef	236
186	&& !(SvFLAGS(namesv) & SVf_FAKE)	237	SvREFCNT_dec (av);
187	&& *SvPVX(namesv) == '&'	238
188	&& CvCLONE(ppad[ix]))	239	return 0;
189	{	240	}
190	CV *kid = cv_clone((CV*)ppad[ix]);	241
191	SvREFCNT_dec(ppad[ix]);	242	#define PERL_MAGIC_coro PERL_MAGIC_ext
192	CvCLONE_on(kid);	243
193	SvPADMY_on(kid);	244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
194	npad[ix] = (SV*)kid;	245
195	}	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 ();
196	}	288	}
197	#endif
198		289
199	return newpadlist;	290	av = (AV *)mg->mg_obj;
200	}
201		291
202	#ifdef MAY_FLUSH	292	if (AvFILLp (av) >= AvMAX (av))
203	STATIC void	293	av_extend (av, AvMAX (av) + 1);
204	free_padlist (AV *padlist)
205	{
206	/* may be during global destruction */
207	if (SvREFCNT(padlist))
208	{
209	I32 i = AvFILLp(padlist);
210	while (i >= 0)
211	{
212	SV **svp = av_fetch(padlist, i--, FALSE);
213	SV *sv = svp ? *svp : Nullsv;
214	if (sv)
215	SvREFCNT_dec(sv);
216	}
217		294
218	SvREFCNT_dec((SV*)padlist);	295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
219	}
220	}	296	}
221	#endif
222
223	/* the next two functions merely cache the padlists */
224	STATIC void
225	get_padlist (CV *cv)
226	{
227	SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0);
228
229	if (he && AvFILLp ((AV *)*he) >= 0)
230	CvPADLIST (cv) = (AV *)av_pop ((AV *)*he);
231	else
232	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));
233	}
234
235	STATIC void
236	put_padlist (CV *cv)
237	{
238	SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1);
239
240	if (SvTYPE (*he) != SVt_PVAV)
241	{
242	SvREFCNT_dec (*he);
243	*he = (SV *)newAV ();
244	}
245
246	av_push ((AV *)*he, (SV *)CvPADLIST (cv));
247	}
248
249	#ifdef MAY_FLUSH
250	STATIC void
251	flush_padlist_cache ()
252	{
253	HV *hv = padlist_cache;
254	padlist_cache = newHV ();
255
256	if (hv_iterinit (hv))
257	{
258	HE *he;
259	AV *padlist;
260
261	while (!!(he = hv_iternext (hv)))
262	{
263	AV *av = (AV *)HeVAL(he);
264
265	/* casting is fun. */
266	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
267	free_padlist (padlist);
268	}
269	}
270
271	SvREFCNT_dec (hv);
272	}
273	#endif
274		297
275	#define SB do {	298	#define SB do {
276	#define SE } while (0)	299	#define SE } while (0)
277		300
278	#define LOAD(state) load_state(aTHX_ (state));
279	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
280
281	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
282		302
283	static void	303	static void
284	load_state(pTHX_ Coro__State c)	304	load_perl (Coro__State c)
285	{	305	{
286	PL_dowarn = c->dowarn;	306	#define VAR(name,type) PL_ ## name = c->name;
287	PL_in_eval = c->in_eval;	307	# include "state.h"
288		308	#undef VAR
289	PL_curstackinfo = c->curstackinfo;
290	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;
294	PL_curpad = c->curpad;
295	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;
300	PL_tmps_max = c->tmps_max;
301	PL_markstack = c->markstack;
302	PL_markstack_ptr = c->markstack_ptr;
303	PL_markstack_max = c->markstack_max;
304	PL_scopestack = c->scopestack;
305	PL_scopestack_ix = c->scopestack_ix;
306	PL_scopestack_max = c->scopestack_max;
307	PL_savestack = c->savestack;
308	PL_savestack_ix = c->savestack_ix;
309	PL_savestack_max = c->savestack_max;
310	PL_retstack = c->retstack;
311	PL_retstack_ix = c->retstack_ix;
312	PL_retstack_max = c->retstack_max;
313	PL_curcop = c->curcop;
314	PL_top_env = c->top_env;
315		309
316	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
317	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
318	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	}
319		324
320	{	325	{
321	dSP;	326	dSP;
322	CV *cv;	327	CV *cv;
323		328
324	/* now do the ugly restore mess */	329	/* now do the ugly restore mess */
325	while ((cv = (CV *)POPs))	330	while ((cv = (CV *)POPs))
326	{	331	{
327	AV *padlist = (AV *)POPs;
328
329	if (padlist)
330	{
331	put_padlist (cv); /* mark this padlist as available */	332	put_padlist (cv); /* mark this padlist as available */
332	CvPADLIST(cv) = padlist;	333	CvDEPTH (cv) = PTR2IV (POPs);
333	#ifdef USE_THREADS	334	CvPADLIST (cv) = (AV *)POPs;
334	/*CvOWNER(cv) = (struct perl_thread *)POPs;*/
335	#endif
336	}
337
338	++CvDEPTH(cv);
339	}	335	}
340		336
341	PUTBACK;	337	PUTBACK;
342	}	338	}
343	}	339	}
344		340
345	static void	341	static void
346	save_state(pTHX_ Coro__State c, int flags)	342	save_perl (Coro__State c)
347	{	343	{
348	{	344	{
349	dSP;	345	dSP;
350	I32 cxix = cxstack_ix;	346	I32 cxix = cxstack_ix;
351	PERL_CONTEXT *ccstk = cxstack;	347	PERL_CONTEXT *ccstk = cxstack;
…		…
362	{	358	{
363	while (cxix >= 0)	359	while (cxix >= 0)
364	{	360	{
365	PERL_CONTEXT *cx = &ccstk[cxix--];	361	PERL_CONTEXT *cx = &ccstk[cxix--];
366		362
367	if (CxTYPE(cx) == CXt_SUB)	363	if (CxTYPE (cx) == CXt_SUB)
368	{	364	{
369	CV *cv = cx->blk_sub.cv;	365	CV *cv = cx->blk_sub.cv;
		366
370	if (CvDEPTH(cv))	367	if (CvDEPTH (cv))
371	{	368	{
372	#ifdef USE_THREADS
373	/*XPUSHs ((SV *)CvOWNER(cv));*/
374	/*CvOWNER(cv) = 0;*/
375	/*error must unlock this cv etc.. etc...*/
376	#endif
377	EXTEND (SP, CvDEPTH(cv)*2);	369	EXTEND (SP, 3);
378		370
379	while (--CvDEPTH(cv))
380	{
381	/* this tells the restore code to increment CvDEPTH */
382	PUSHs (Nullsv);
383	PUSHs ((SV *)cv);
384	}
385
386	PUSHs ((SV *)CvPADLIST(cv));	371	PUSHs ((SV *)CvPADLIST (cv));
		372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
387	PUSHs ((SV *)cv);	373	PUSHs ((SV *)cv);
388		374
		375	CvDEPTH (cv) = 0;
389	get_padlist (cv); /* this is a monster */	376	get_padlist (cv);
390	}	377	}
391	}	378	}
		379	#ifdef CXt_FORMAT
392	else if (CxTYPE(cx) == CXt_FORMAT)	380	else if (CxTYPE (cx) == CXt_FORMAT)
393	{	381	{
394	/* I never used formats, so how should I know how these are implemented? */	382	/* I never used formats, so how should I know how these are implemented? */
395	/* my bold guess is as a simple, plain sub... */	383	/* my bold guess is as a simple, plain sub... */
396	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	384	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
397	}	385	}
		386	#endif
398	}	387	}
399		388
400	if (top_si->si_type == PERLSI_MAIN)	389	if (top_si->si_type == PERLSI_MAIN)
401	break;	390	break;
402		391
…		…
406	}	395	}
407		396
408	PUTBACK;	397	PUTBACK;
409	}	398	}
410		399
411	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
412	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
413	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
414		404
415	c->dowarn = PL_dowarn;	405	#define VAR(name,type)c->name = PL_ ## name;
416	c->in_eval = PL_in_eval;	406	# include "state.h"
417		407	#undef VAR
418	c->curstackinfo = PL_curstackinfo;
419	c->curstack = PL_curstack;
420	c->mainstack = PL_mainstack;
421	c->stack_sp = PL_stack_sp;
422	c->op = PL_op;
423	c->curpad = PL_curpad;
424	c->stack_base = PL_stack_base;
425	c->stack_max = PL_stack_max;
426	c->tmps_stack = PL_tmps_stack;
427	c->tmps_floor = PL_tmps_floor;
428	c->tmps_ix = PL_tmps_ix;
429	c->tmps_max = PL_tmps_max;
430	c->markstack = PL_markstack;
431	c->markstack_ptr = PL_markstack_ptr;
432	c->markstack_max = PL_markstack_max;
433	c->scopestack = PL_scopestack;
434	c->scopestack_ix = PL_scopestack_ix;
435	c->scopestack_max = PL_scopestack_max;
436	c->savestack = PL_savestack;
437	c->savestack_ix = PL_savestack_ix;
438	c->savestack_max = PL_savestack_max;
439	c->retstack = PL_retstack;
440	c->retstack_ix = PL_retstack_ix;
441	c->retstack_max = PL_retstack_max;
442	c->curcop = PL_curcop;
443	c->top_env = PL_top_env;
444	}	408	}
445		409
446	/*	410	/*
447	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
449	* on the assumption that coroutines do not usually need	413	* on the (sometimes correct) assumption that coroutines do
450	* a lot of stackspace.	414	* not usually need a lot of stackspace.
451	*/	415	*/
452	STATIC void	416	static void
453	coro_init_stacks (pTHX)	417	coro_init_stacks ()
454	{	418	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		423
460	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		427
464	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	431	PL_tmps_max = 128;
468		432
469	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
472		436
		437	#ifdef SET_MARK_OFFSET
473	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
		439	#endif
474		440
475	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
476	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
477	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
478		444
479	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
480	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
481	PL_savestack_max = 96;	447	PL_savestack_max = 64;
482		448
		449	#if !PERL_VERSION_ATLEAST (5,9,0)
483	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
484	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
485	PL_retstack_max = 8;	452	PL_retstack_max = 16;
		453	#endif
486	}	454	}
487		455
488	/*	456	/*
489	* destroy the stacks, the callchain etc...	457	* destroy the stacks, the callchain etc...
490	* still there is a memleak of 128 bytes...
491	*/	458	*/
492	STATIC void	459	static void
493	destroy_stacks(pTHX)	460	coro_destroy_stacks ()
494	{	461	{
495	if (!IN_DESTRUCT)	462	if (!IN_DESTRUCT)
496	{	463	{
497	/* is this ugly, I ask? */	464	/* is this ugly, I ask? */
498	while (PL_scopestack_ix)	465	LEAVE_SCOPE (0);
499	LEAVE;
500		466
501	/* sure it is, but more important: is it correct?? :/ */	467	/* sure it is, but more important: is it correct?? :/ */
502	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
503	FREETMPS;	468	FREETMPS;
		469
		470	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
504	}	471	}
505		472
506	while (PL_curstackinfo->si_next)	473	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	474	PL_curstackinfo = PL_curstackinfo->si_next;
508		475
509	while (PL_curstackinfo)	476	while (PL_curstackinfo)
510	{	477	{
511	PERL_SI *p = PL_curstackinfo->si_prev;	478	PERL_SI *p = PL_curstackinfo->si_prev;
512		479
513	{	480	{ /*D*//*remove*/
514	dSP;	481	dSP;
515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	482	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516	PUTBACK; /* possibly superfluous */	483	PUTBACK; /* possibly superfluous */
517	}	484	}
518		485
519	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
520	{	487	{
521	dounwind(-1);	488	dounwind (-1);/*D*//*remove*/
522	SvREFCNT_dec(PL_curstackinfo->si_stack);	489	SvREFCNT_dec (PL_curstackinfo->si_stack);
523	}	490	}
524		491
525	Safefree(PL_curstackinfo->si_cxstack);	492	Safefree (PL_curstackinfo->si_cxstack);
526	Safefree(PL_curstackinfo);	493	Safefree (PL_curstackinfo);
527	PL_curstackinfo = p;	494	PL_curstackinfo = p;
528	}	495	}
529		496
530	Safefree(PL_tmps_stack);	497	Safefree (PL_tmps_stack);
531	Safefree(PL_markstack);	498	Safefree (PL_markstack);
532	Safefree(PL_scopestack);	499	Safefree (PL_scopestack);
533	Safefree(PL_savestack);	500	Safefree (PL_savestack);
		501	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree(PL_retstack);	502	Safefree (PL_retstack);
535	}
536
537	static void
538	allocate_stack (Coro__State ctx, int alloc)
539	{
540	coro_stack *stack;
541
542	New (0, stack, 1, coro_stack);
543
544	stack->refcnt = 1;
545	stack->usecnt = 1;
546	stack->gencnt = ctx->gencnt = 0;
547	if (alloc)
548	{
549	#if HAVE_MMAP
550	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
552	if (stack->sptr == (void *)-1)
553	#endif	503	#endif
554	{
555	/*FIXME*//*D*//* reasonable stack size! */
556	stack->ssize = -4096 * sizeof (long);
557	New (0, stack->sptr, 4096, long);
558	}
559	}
560	else
561	stack->sptr = 0;
562
563	ctx->stack = stack;
564	}	504	}
565		505
566	static void	506	static void
567	deallocate_stack (Coro__State ctx)	507	setup_coro (struct coro *coro)
568	{
569	coro_stack *stack = ctx->stack;
570
571	ctx->stack = 0;
572
573	if (stack)
574	{
575	if (!--stack->refcnt)
576	{
577	#ifdef HAVE_MMAP
578	if (stack->ssize > 0 && stack->sptr)
579	munmap (stack->sptr, stack->ssize);
580	else
581	#else
582	Safefree (stack->sptr);
583	#endif
584	Safefree (stack);
585	}
586	else if (ctx->gencnt == stack->gencnt)
587	--stack->usecnt;
588	}
589	}
590
591	static void
592	setup_coro (void *arg)
593	{	508	{
594	/*	509	/*
595	* emulate part of the perl startup here.	510	* emulate part of the perl startup here.
596	*/	511	*/
		512
		513	coro_init_stacks ();
		514
		515	PL_curcop = &PL_compiling;
		516	PL_in_eval = EVAL_NULL;
		517	PL_curpm = 0;
		518	PL_localizing = 0;
		519	PL_dirty = 0;
		520	PL_restartop = 0;
		521
		522	{
		523	dSP;
		524	LOGOP myop;
		525
		526	SvREFCNT_dec (GvAV (PL_defgv));
		527	GvAV (PL_defgv) = coro->args; coro->args = 0;
		528
		529	Zero (&myop, 1, LOGOP);
		530	myop.op_next = Nullop;
		531	myop.op_flags = OPf_WANT_VOID;
		532
		533	PUSHMARK (SP);
		534	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		535	PUTBACK;
		536	PL_op = (OP *)&myop;
		537	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		538	SPAGAIN;
		539	}
		540
		541	ENTER; /* necessary e.g. for dounwind */
		542	}
		543
		544	static void
		545	free_coro_mortal ()
		546	{
		547	if (coro_mortal)
		548	{
		549	SvREFCNT_dec (coro_mortal);
		550	coro_mortal = 0;
		551	}
		552	}
		553
		554	/* inject a fake call to Coro::State::_cctx_init into the execution */
		555	static void NOINLINE
		556	prepare_cctx (coro_cctx *cctx)
		557	{
597	dSP;	558	dSP;
598	Coro__State ctx = (Coro__State)arg;	559	LOGOP myop;
599	SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE);
600		560
601	coro_init_stacks (aTHX);	561	Zero (&myop, 1, LOGOP);
602	/*PL_curcop = 0;*/	562	myop.op_next = PL_op;
603	/*PL_in_eval = PL_in_eval;*/ /* inherit */	563	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604	SvREFCNT_dec (GvAV (PL_defgv));
605	GvAV (PL_defgv) = ctx->args;
606		564
		565	PUSHMARK (SP);
		566	EXTEND (SP, 2);
		567	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		568	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		569	PUTBACK;
		570	PL_op = (OP *)&myop;
		571	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
607	SPAGAIN;	572	SPAGAIN;
608
609	if (ctx->stack)
610	{
611	ctx->cursp = 0;
612
613	PUSHMARK(SP);
614	PUTBACK;
615	(void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL);
616
617	if (SvTRUE (ERRSV))
618	croak (NULL);
619	else
620	croak ("FATAL: CCTXT coroutine returned!");
621	}
622	else
623	{
624	UNOP myop;
625
626	PL_op = (OP *)&myop;
627
628	Zero(&myop, 1, UNOP);
629	myop.op_next = Nullop;
630	myop.op_flags = OPf_WANT_VOID;
631
632	PUSHMARK(SP);
633	XPUSHs (sub_init);
634	/*
635	* the next line is slightly wrong, as PL_op->op_next
636	* is actually being executed so we skip the first op.
637	* that doesn't matter, though, since it is only
638	* pp_nextstate and we never return...
639	* ah yes, and I don't care anyways ;)
640	*/
641	PUTBACK;
642	PL_op = PL_ppaddr[OP_ENTERSUB]();
643	SPAGAIN;
644
645	ENTER; /* necessary e.g. for dounwind */
646	}
647	}	573	}
648		574
649	static void	575	static void
650	continue_coro (void *arg)	576	coro_run (void *arg)
651	{	577	{
		578	/* coro_run is the alternative tail of transfer(), so unlock here. */
		579	UNLOCK;
		580
652	/*	581	/*
653	* this is a _very_ stripped down perl interpreter ;)	582	* this is a _very_ stripped down perl interpreter ;)
654	*/	583	*/
655	Coro__State ctx = (Coro__State)arg;
656	JMPENV coro_start_env;
657
658	/* same as JMPENV_BOOTSTRAP */
659	Zero(&coro_start_env, 1, JMPENV);
660	coro_start_env.je_ret = -1;
661	coro_start_env.je_mustcatch = TRUE;
662	PL_top_env = &coro_start_env;	584	PL_top_env = &PL_start_env;
663		585
664	ctx->cursp = 0;	586	/* inject call to cctx_init */
665	PL_op = PL_op->op_next;	587	prepare_cctx ((coro_cctx *)arg);
666	CALLRUNOPS(aTHX);
667		588
		589	/* somebody will hit me for both perl_run and PL_restartop */
		590	PL_restartop = PL_op;
		591	perl_run (PL_curinterp);
		592
		593	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
668	abort ();	594	abort ();
669	}	595	}
670		596
671	STATIC void	597	static coro_cctx *
		598	cctx_new ()
		599	{
		600	coro_cctx *cctx;
		601
		602	++cctx_count;
		603
		604	Newz (0, cctx, 1, coro_cctx);
		605
		606	#if HAVE_MMAP
		607
		608	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		609	/* mmap supposedly does allocate-on-write for us */
		610	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
		611
		612	if (cctx->sptr == (void *)-1)
		613	{
		614	perror ("FATAL: unable to mmap stack for coroutine");
		615	_exit (EXIT_FAILURE);
		616	}
		617
		618	# if STACKGUARD
		619	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		620	# endif
		621
		622	#else
		623
		624	cctx->ssize = STACKSIZE * (long)sizeof (long);
		625	New (0, cctx->sptr, STACKSIZE, long);
		626
		627	if (!cctx->sptr)
		628	{
		629	perror ("FATAL: unable to malloc stack for coroutine");
		630	_exit (EXIT_FAILURE);
		631	}
		632
		633	#endif
		634
		635	#if USE_VALGRIND
		636	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		637	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		638	cctx->ssize + (char *)cctx->sptr
		639	);
		640	#endif
		641
		642	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		643
		644	return cctx;
		645	}
		646
		647	static void
		648	cctx_destroy (coro_cctx *cctx)
		649	{
		650	if (!cctx)
		651	return;
		652
		653	--cctx_count;
		654
		655	#if USE_VALGRIND
		656	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		657	#endif
		658
		659	#if HAVE_MMAP
		660	munmap (cctx->sptr, cctx->ssize);
		661	#else
		662	Safefree (cctx->sptr);
		663	#endif
		664
		665	Safefree (cctx);
		666	}
		667
		668	static coro_cctx *
		669	cctx_get ()
		670	{
		671	coro_cctx *cctx;
		672
		673	if (cctx_first)
		674	{
		675	cctx = cctx_first;
		676	cctx_first = cctx->next;
		677	--cctx_idle;
		678	}
		679	else
		680	{
		681	cctx = cctx_new ();
		682	PL_op = PL_op->op_next;
		683	}
		684
		685	return cctx;
		686	}
		687
		688	static void
		689	cctx_put (coro_cctx *cctx)
		690	{
		691	/* free another cctx if overlimit */
		692	if (cctx_idle >= MAX_IDLE_CCTX)
		693	{
		694	coro_cctx *first = cctx_first;
		695	cctx_first = first->next;
		696	--cctx_idle;
		697
		698	assert (!first->inuse);
		699	cctx_destroy (first);
		700	}
		701
		702	++cctx_idle;
		703	cctx->next = cctx_first;
		704	cctx_first = cctx;
		705	}
		706
		707	/* never call directly, always through the coro_state_transfer global variable */
		708	static void NOINLINE
672	transfer(pTHX_ struct coro *prev, struct coro *next, int flags)	709	transfer (struct coro *prev, struct coro *next)
673	{	710	{
674	dSTACKLEVEL;	711	dSTACKLEVEL;
675	static struct coro *xnext;
676		712
		713	/* sometimes transfer is only called to set idle_sp */
		714	if (!next)
		715	{
		716	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		717	assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */
		718	}
677	if (prev != next)	719	else if (prev != next)
678	{	720	{
679	xnext = next;	721	coro_cctx *prev__cctx;
680		722
681	if (next->mainstack)	723	if (prev->flags & CF_NEW)
682	{	724	{
683	SAVE (prev, flags);	725	/* create a new empty context */
684	LOAD (next);	726	Newz (0, prev->cctx, 1, coro_cctx);
685		727	prev->cctx->inuse = 1;
686	/* mark this state as in-use */	728	prev->flags &= ~CF_NEW;
687	next->mainstack = 0;	729	prev->flags |= CF_RUNNING;
688	next->tmps_ix = -2;
689
690	/* stacklevel changed? if yes, grab the stack for us! */
691	if (flags & TRANSFER_SAVE_CCTXT)
692	{
693	if (!prev->stack)
694	allocate_stack (prev, 0);
695	else if (prev->cursp != stacklevel
696	&& prev->stack->usecnt > 1)
697	{
698	prev->gencnt = ++prev->stack->gencnt;
699	prev->stack->usecnt = 1;
700	}
701
702	/* has our stack been invalidated? */
703	if (next->stack && next->stack->gencnt != next->gencnt)
704	{
705	deallocate_stack (next);
706	allocate_stack (next, 1);
707	coro_create (&(next->stack->cctx),
708	continue_coro, (void *)next,
709	next->stack->sptr, labs (next->stack->ssize));
710	}
711
712	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
713	/* don't add any code here */
714	}
715
716	}	730	}
717	else if (next->tmps_ix == -2)	731
718	croak ("tried to transfer to running coroutine");	732	/*TODO: must not croak here */
		733	if (!prev->flags & CF_RUNNING)
		734	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		735
		736	if (next->flags & CF_RUNNING)
		737	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		738
		739	prev->flags &= ~CF_RUNNING;
		740	next->flags |= CF_RUNNING;
		741
		742	LOCK;
		743
		744	if (next->flags & CF_NEW)
		745	{
		746	/* need to start coroutine */
		747	next->flags &= ~CF_NEW;
		748	/* first get rid of the old state */
		749	save_perl (prev);
		750	/* setup coroutine call */
		751	setup_coro (next);
		752	/* need a new stack */
		753	assert (!next->cctx);
		754	}
719	else	755	else
720	{	756	{
721	SAVE (prev, -1); /* first get rid of the old state */	757	/* coroutine already started */
722		758	save_perl (prev);
723	if (flags & TRANSFER_SAVE_CCTXT)	759	load_perl (next);
724	{
725	if (!prev->stack)
726	allocate_stack (prev, 0);
727
728	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
729	{
730	setup_coro (next);
731
732	prev->stack->refcnt++;
733	prev->stack->usecnt++;
734	next->stack = prev->stack;
735	next->gencnt = prev->gencnt;
736	}
737	else
738	{
739	allocate_stack (next, 1);
740	coro_create (&(next->stack->cctx),
741	setup_coro, (void *)next,
742	next->stack->sptr, labs (next->stack->ssize));
743	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
744	/* don't add any code here */
745	}
746	}
747	else
748	setup_coro (next);
749	}	760	}
750		761
751	/*	762	prev__cctx = prev->cctx;
752	* xnext is now either prev or next, depending on wether	763
753	* we switched the c stack or not. that's why I use a global	764	/* possibly "free" the cctx */
754	* variable, that should become thread-specific at one point.	765	if (prev__cctx->idle_sp == STACKLEVEL)
755	*/	766	{
756	xnext->cursp = stacklevel;	767	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		768	assert (PL_top_env == prev__cctx->top_env);
		769
		770	prev->cctx = 0;
		771
		772	cctx_put (prev__cctx);
		773	prev__cctx->inuse = 0;
		774	}
		775
		776	if (!next->cctx)
		777	{
		778	next->cctx = cctx_get ();
		779	assert (!next->cctx->inuse);
		780	next->cctx->inuse = 1;
		781	}
		782
		783	if (prev__cctx != next->cctx)
		784	{
		785	prev__cctx->top_env = PL_top_env;
		786	PL_top_env = next->cctx->top_env;
		787	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		788	}
		789
		790	free_coro_mortal ();
		791
		792	UNLOCK;
757	}	793	}
		794	}
758		795
759	if (coro_mortal)	796	struct transfer_args
		797	{
		798	struct coro *prev, *next;
		799	};
		800
		801	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
		802
		803	static void
		804	coro_state_destroy (struct coro *coro)
		805	{
		806	if (coro->refcnt--)
		807	return;
		808
		809	if (coro->mainstack && coro->mainstack != main_mainstack)
760	{	810	{
761	SvREFCNT_dec (coro_mortal);	811	struct coro temp;
		812	Zero (&temp, 1, struct coro);
		813	temp.save = CORO_SAVE_ALL;
		814
		815	if (coro->flags & CF_RUNNING)
		816	croak ("FATAL: tried to destroy currently running coroutine");
		817
		818	save_perl (&temp);
		819	load_perl (coro);
		820
		821	coro_destroy_stacks ();
		822
		823	load_perl (&temp); /* this will get rid of defsv etc.. */
		824
762	coro_mortal = 0;	825	coro->mainstack = 0;
763	}	826	}
764	}
765		827
766	#define SV_CORO(sv,func) \	828	cctx_destroy (coro->cctx);
767	do { \	829	SvREFCNT_dec (coro->args);
768	if (SvROK (sv)) \	830	Safefree (coro);
769	sv = SvRV (sv); \	831	}
770	\
771	if (SvTYPE(sv) == SVt_PVHV) \
772	{ \
773	HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
774	\
775	if (!he) \
776	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
777	\
778	(sv) = SvRV (HeVAL(he)); \
779	} \
780	\
781	/* must also be changed inside Coro::Cont::yield */ \
782	if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \
783	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
784	\
785	} while(0)
786		832
787	#define SvSTATE(sv) (struct coro *)SvIV (sv)
788
789	static void	833	static int
		834	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)
		835	{
		836	struct coro *coro = (struct coro *)mg->mg_ptr;
		837	mg->mg_ptr = 0;
		838
		839	coro_state_destroy (coro);
		840
		841	return 0;
		842	}
		843
		844	static int
		845	coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
		846	{
		847	struct coro *coro = (struct coro *)mg->mg_ptr;
		848
		849	++coro->refcnt;
		850
		851	return 0;
		852	}
		853
		854	static MGVTBL coro_state_vtbl = {
		855	0, 0, 0, 0,
		856	coro_state_clear,
		857	0,
		858	#ifdef MGf_DUP
		859	coro_state_dup,
		860	#else
		861	# define MGf_DUP 0
		862	#endif
		863	};
		864
		865	static struct coro *
		866	SvSTATE (SV *coro)
		867	{
		868	HV *stash;
		869	MAGIC *mg;
		870
		871	if (SvROK (coro))
		872	coro = SvRV (coro);
		873
		874	stash = SvSTASH (coro);
		875	if (stash != coro_stash && stash != coro_state_stash)
		876	{
		877	/* very slow, but rare, check */
		878	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		879	croak ("Coro::State object required");
		880	}
		881
		882	mg = SvMAGIC (coro);
		883	assert (mg->mg_type == PERL_MAGIC_ext);
		884	return (struct coro *)mg->mg_ptr;
		885	}
		886
		887	static void
		888	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)
		889	{
		890	ta->prev = SvSTATE (prev_sv);
		891	ta->next = SvSTATE (next_sv);
		892	}
		893
		894	static void
790	api_transfer(pTHX_ SV *prev, SV *next, int flags)	895	api_transfer (SV *prev_sv, SV *next_sv)
791	{	896	{
792	SV_CORO (prev, "Coro::transfer");	897	struct transfer_args ta;
793	SV_CORO (next, "Coro::transfer");
794		898
795	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	899	prepare_transfer (&ta, prev_sv, next_sv);
		900	TRANSFER (ta);
		901	}
		902
		903	static int
		904	api_save (SV *coro_sv, int new_save)
		905	{
		906	struct coro *coro = SvSTATE (coro_sv);
		907	int old_save = coro->save;
		908
		909	if (new_save >= 0)
		910	coro->save = new_save;
		911
		912	return old_save;
796	}	913	}
797		914
798	/** Coro ********************************************************************/	915	/** Coro ********************************************************************/
799		916
800	#define PRIO_MAX 3	917	#define PRIO_MAX 3
…		…
803	#define PRIO_LOW -1	920	#define PRIO_LOW -1
804	#define PRIO_IDLE -3	921	#define PRIO_IDLE -3
805	#define PRIO_MIN -4	922	#define PRIO_MIN -4
806		923
807	/* for Coro.pm */	924	/* for Coro.pm */
808	static GV *coro_current, *coro_idle;	925	static SV *coro_current;
809	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	926	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
810	static int coro_nready;	927	static int coro_nready;
811		928
812	static void	929	static void
813	coro_enq (SV *sv)	930	coro_enq (SV *coro_sv)
814	{	931	{
815	if (SvTYPE (sv) == SVt_PVHV)
816	{
817	SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
818	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
819
820	prio = prio > PRIO_MAX ? PRIO_MAX
821	: prio < PRIO_MIN ? PRIO_MIN
822	: prio;
823
824	av_push (coro_ready [prio - PRIO_MIN], sv);	932	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
825	coro_nready++;	933	coro_nready++;
826
827	return;
828	}
829
830	croak ("Coro::ready tried to enqueue something that is not a coroutine");
831	}	934	}
832		935
833	static SV *	936	static SV *
834	coro_deq (int min_prio)	937	coro_deq (int min_prio)
835	{	938	{
…		…
838	min_prio -= PRIO_MIN;	941	min_prio -= PRIO_MIN;
839	if (min_prio < 0)	942	if (min_prio < 0)
840	min_prio = 0;	943	min_prio = 0;
841		944
842	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	945	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
843	if (av_len (coro_ready[prio]) >= 0)	946	if (AvFILLp (coro_ready [prio]) >= 0)
844	{	947	{
845	coro_nready--;	948	coro_nready--;
846	return av_shift (coro_ready[prio]);	949	return av_shift (coro_ready [prio]);
847	}	950	}
848		951
849	return 0;	952	return 0;
850	}	953	}
851		954
852	static void	955	static int
853	api_ready (SV *coro)	956	api_ready (SV *coro_sv)
854	{	957	{
		958	struct coro *coro;
		959
855	if (SvROK (coro))	960	if (SvROK (coro_sv))
856	coro = SvRV (coro);	961	coro_sv = SvRV (coro_sv);
857		962
		963	coro = SvSTATE (coro_sv);
		964
		965	if (coro->flags & CF_READY)
		966	return 0;
		967
		968	#if 0 /* this is actually harmless */
		969	if (coro->flags & CF_RUNNING)
		970	croak ("Coro::ready called on currently running coroutine");
		971	#endif
		972
		973	coro->flags |= CF_READY;
		974
		975	LOCK;
858	coro_enq (SvREFCNT_inc (coro));	976	coro_enq (SvREFCNT_inc (coro_sv));
		977	UNLOCK;
		978
		979	return 1;
		980	}
		981
		982	static int
		983	api_is_ready (SV *coro_sv)
		984	{
		985	return !!SvSTATE (coro_sv)->flags & CF_READY;
		986	}
		987
		988	static void
		989	prepare_schedule (struct transfer_args *ta)
		990	{
		991	SV *prev, *next;
		992
		993	for (;;)
		994	{
		995	LOCK;
		996	next = coro_deq (PRIO_MIN);
		997	UNLOCK;
		998
		999	if (next)
		1000	break;
		1001
		1002	{
		1003	dSP;
		1004
		1005	ENTER;
		1006	SAVETMPS;
		1007
		1008	PUSHMARK (SP);
		1009	PUTBACK;
		1010	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1011
		1012	FREETMPS;
		1013	LEAVE;
		1014	}
		1015	}
		1016
		1017	prev = SvRV (coro_current);
		1018	SvRV_set (coro_current, next);
		1019
		1020	/* free this only after the transfer */
		1021	LOCK;
		1022	free_coro_mortal ();
		1023	UNLOCK;
		1024	coro_mortal = prev;
		1025
		1026	assert (!SvROK(prev));//D
		1027	assert (!SvROK(next));//D
		1028
		1029	ta->prev = SvSTATE (prev);
		1030	ta->next = SvSTATE (next);
		1031
		1032	assert (ta->next->flags & CF_READY);
		1033	ta->next->flags &= ~CF_READY;
		1034	}
		1035
		1036	static void
		1037	prepare_cede (struct transfer_args *ta)
		1038	{
		1039	api_ready (coro_current);
		1040
		1041	prepare_schedule (ta);
859	}	1042	}
860		1043
861	static void	1044	static void
862	api_schedule (void)	1045	api_schedule (void)
863	{	1046	{
864	SV *prev, *next;	1047	struct transfer_args ta;
865		1048
866	prev = SvRV (GvSV (coro_current));	1049	prepare_schedule (&ta);
867	next = coro_deq (PRIO_MIN);	1050	TRANSFER (ta);
868
869	if (!next)
870	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
871
872	/* free this only after the transfer */
873	coro_mortal = prev;
874	SV_CORO (prev, "Coro::schedule");
875
876	SvRV (GvSV (coro_current)) = next;
877
878	SV_CORO (next, "Coro::schedule");
879
880	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
881	TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
882	}	1051	}
883		1052
884	static void	1053	static void
885	api_cede (void)	1054	api_cede (void)
886	{	1055	{
887	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	1056	struct transfer_args ta;
888		1057
889	api_schedule ();	1058	prepare_cede (&ta);
		1059	TRANSFER (ta);
890	}	1060	}
891		1061
892	MODULE = Coro::State PACKAGE = Coro::State	1062	MODULE = Coro::State PACKAGE = Coro::State
893		1063
894	PROTOTYPES: ENABLE	1064	PROTOTYPES: DISABLE
895		1065
896	BOOT:	1066	BOOT:
897	{ /* {} necessary for stoopid perl-5.6.x */	1067	{
898	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1068	#ifdef USE_ITHREADS
899	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1069	MUTEX_INIT (&coro_mutex);
		1070	#endif
		1071	BOOT_PAGESIZE;
		1072
900	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1073	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
901		1074
902	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1075	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
903	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1076	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
904	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1077	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1078	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
905	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1079	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
906
907	if (!padlist_cache)
908	padlist_cache = newHV ();
909		1080
910	main_mainstack = PL_mainstack;	1081	main_mainstack = PL_mainstack;
911		1082
912	coroapi.ver = CORO_API_VERSION;	1083	coroapi.ver = CORO_API_VERSION;
913	coroapi.transfer = api_transfer;	1084	coroapi.transfer = api_transfer;
914	}
915		1085
916	Coro::State	1086	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
917	_newprocess(args)	1087	}
918	SV * args	1088
919	PROTOTYPE: $	1089	SV *
		1090	new (char *klass, ...)
920	CODE:	1091	CODE:
921	Coro__State coro;	1092	{
		1093	struct coro *coro;
		1094	HV *hv;
		1095	int i;
922		1096
923	if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV)
924	croak ("Coro::State::_newprocess expects an arrayref");
925
926	New (0, coro, 1, struct coro);	1097	Newz (0, coro, 1, struct coro);
		1098	coro->args = newAV ();
		1099	coro->save = CORO_SAVE_ALL;
		1100	coro->flags = CF_NEW;
927		1101
928	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1102	hv = newHV ();
929	coro->mainstack = 0; /* actual work is done inside transfer */	1103	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
930	coro->stack = 0;	1104	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
931		1105
932	RETVAL = coro;	1106	for (i = 1; i < items; i++)
		1107	av_push (coro->args, newSVsv (ST (i)));
		1108	}
933	OUTPUT:	1109	OUTPUT:
934	RETVAL	1110	RETVAL
935		1111
		1112	int
		1113	save (SV *coro, int new_save = -1)
		1114	CODE:
		1115	RETVAL = api_save (coro, new_save);
		1116	OUTPUT:
		1117	RETVAL
		1118
936	void	1119	void
937	transfer(prev, next, flags)	1120	_set_stacklevel (...)
938	SV *prev	1121	ALIAS:
939	SV *next	1122	Coro::State::transfer = 1
940	int flags	1123	Coro::schedule = 2
941	PROTOTYPE: @	1124	Coro::cede = 3
942	CODE:	1125	CODE:
943	PUTBACK;	1126	{
944	SV_CORO (next, "Coro::transfer");	1127	struct transfer_args ta;
945	SV_CORO (prev, "Coro::transfer");	1128
946	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1129	switch (ix)
947	SPAGAIN;	1130	{
		1131	case 0:
		1132	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
		1133	ta.next = 0;
		1134	break;
		1135
		1136	case 1:
		1137	if (items != 2)
		1138	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1139
		1140	prepare_transfer (&ta, ST (0), ST (1));
		1141	break;
		1142
		1143	case 2:
		1144	prepare_schedule (&ta);
		1145	break;
		1146
		1147	case 3:
		1148	prepare_cede (&ta);
		1149	break;
		1150	}
		1151
		1152	TRANSFER (ta);
		1153	}
948		1154
949	void	1155	void
950	DESTROY(coro)	1156	_clone_state_from (SV *dst, SV *src)
951	Coro::State coro	1157	CODE:
952	CODE:	1158	{
		1159	struct coro *coro_src = SvSTATE (src);
953		1160
954	if (coro->mainstack && coro->mainstack != main_mainstack)	1161	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
955	{
956	struct coro temp;
957		1162
958	PUTBACK;	1163	++coro_src->refcnt;
959	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1164	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
960	LOAD(aTHX_ coro);	1165	}
961	SPAGAIN;
962
963	destroy_stacks (aTHX);
964
965	LOAD((&temp)); /* this will get rid of defsv etc.. */
966	SPAGAIN;
967
968	coro->mainstack = 0;
969	}
970
971	deallocate_stack (coro);
972
973	Safefree (coro);
974		1166
975	void	1167	void
976	flush()
977	CODE:
978	#ifdef MAY_FLUSH
979	flush_padlist_cache ();
980	#endif
981
982	void
983	_exit(code)	1168	_exit (code)
984	int code	1169	int code
985	PROTOTYPE: $	1170	PROTOTYPE: $
986	CODE:	1171	CODE:
987	#if defined(__GLIBC__) || _POSIX_C_SOURCE
988	_exit (code);	1172	_exit (code);
989	#else
990	signal (SIGTERM, SIG_DFL);
991	raise (SIGTERM);
992	exit (code);
993	#endif
994		1173
995	MODULE = Coro::State PACKAGE = Coro::Cont	1174	int
		1175	cctx_count ()
		1176	CODE:
		1177	RETVAL = cctx_count;
		1178	OUTPUT:
		1179	RETVAL
996		1180
997	# this is slightly dirty (should expose a c-level api)	1181	int
998		1182	cctx_idle ()
999	void	1183	CODE:
1000	yield(...)	1184	RETVAL = cctx_idle;
1001	PROTOTYPE: @	1185	OUTPUT:
1002	CODE:	1186	RETVAL
1003	static SV *returnstk;
1004	SV *sv;
1005	AV *defav = GvAV (PL_defgv);
1006	struct coro *prev, *next;
1007
1008	if (!returnstk)
1009	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));
1010
1011	/* set up @_ -- ugly */
1012	av_clear (defav);
1013	av_fill (defav, items - 1);
1014	while (items--)
1015	av_store (defav, items, SvREFCNT_inc (ST(items)));
1016
1017	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1018	sv = av_pop ((AV *)SvRV (returnstk));
1019	prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0)));
1020	next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)));
1021	SvREFCNT_dec (sv);
1022
1023	transfer(aTHX_ prev, next, 0);
1024		1187
1025	MODULE = Coro::State PACKAGE = Coro	1188	MODULE = Coro::State PACKAGE = Coro
1026		1189
1027	# this is slightly dirty (should expose a c-level api)
1028
1029	BOOT:	1190	BOOT:
1030	{	1191	{
1031	int i;	1192	int i;
		1193
1032	HV *stash = gv_stashpv ("Coro", TRUE);	1194	coro_stash = gv_stashpv ("Coro", TRUE);
1033		1195
1034	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1196	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1035	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1197	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1036	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1198	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1037	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1199	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1038	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1200	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1039	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1201	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1040		1202
1041	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1203	coro_current = get_sv ("Coro::current", FALSE);
1042	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1204	SvREADONLY_on (coro_current);
1043		1205
1044	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1206	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1045	coro_ready[i] = newAV ();	1207	coro_ready[i] = newAV ();
1046		1208
1047	{	1209	{
1048	SV *sv = perl_get_sv("Coro::API", 1);	1210	SV *sv = perl_get_sv("Coro::API", 1);
1049		1211
1050	coroapi.schedule = api_schedule;	1212	coroapi.schedule = api_schedule;
		1213	coroapi.save = api_save;
1051	coroapi.cede = api_cede;	1214	coroapi.cede = api_cede;
1052	coroapi.ready = api_ready;	1215	coroapi.ready = api_ready;
		1216	coroapi.is_ready = api_is_ready;
1053	coroapi.nready = &coro_nready;	1217	coroapi.nready = &coro_nready;
1054	coroapi.current = coro_current;	1218	coroapi.current = coro_current;
1055		1219
1056	GCoroAPI = &coroapi;	1220	GCoroAPI = &coroapi;
1057	sv_setiv(sv, (IV)&coroapi);	1221	sv_setiv (sv, (IV)&coroapi);
1058	SvREADONLY_on(sv);	1222	SvREADONLY_on (sv);
1059	}	1223	}
1060	}	1224	}
1061		1225
1062	void	1226	void
1063	ready(self)	1227	_set_current (SV *current)
1064	SV * self
1065	PROTOTYPE: $	1228	PROTOTYPE: $
1066	CODE:	1229	CODE:
1067	api_ready (self);	1230	SvREFCNT_dec (SvRV (coro_current));
		1231	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1068		1232
1069	int	1233	int
		1234	prio (Coro::State coro, int newprio = 0)
		1235	ALIAS:
		1236	nice = 1
		1237	CODE:
		1238	{
		1239	RETVAL = coro->prio;
		1240
		1241	if (items > 1)
		1242	{
		1243	if (ix)
		1244	newprio += coro->prio;
		1245
		1246	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1247	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1248
		1249	coro->prio = newprio;
		1250	}
		1251	}
		1252
		1253	SV *
		1254	ready (SV *self)
		1255	PROTOTYPE: $
		1256	CODE:
		1257	RETVAL = boolSV (api_ready (self));
		1258	OUTPUT:
		1259	RETVAL
		1260
		1261	SV *
		1262	is_ready (SV *self)
		1263	PROTOTYPE: $
		1264	CODE:
		1265	RETVAL = boolSV (api_is_ready (self));
		1266	OUTPUT:
		1267	RETVAL
		1268
		1269	int
1070	nready(...)	1270	nready (...)
1071	PROTOTYPE:	1271	PROTOTYPE:
1072	CODE:	1272	CODE:
1073	RETVAL = coro_nready;	1273	RETVAL = coro_nready;
1074	OUTPUT:	1274	OUTPUT:
1075	RETVAL	1275	RETVAL
1076		1276
		1277	MODULE = Coro::State PACKAGE = Coro::AIO
		1278
		1279	SV *
		1280	_get_state ()
		1281	CODE:
		1282	{
		1283	struct io_state *data;
		1284
		1285	RETVAL = newSV (sizeof (struct io_state));
		1286	data = (struct io_state *)SvPVX (RETVAL);
		1287	SvCUR_set (RETVAL, sizeof (struct io_state));
		1288	SvPOK_only (RETVAL);
		1289
		1290	data->errorno = errno;
		1291	data->laststype = PL_laststype;
		1292	data->laststatval = PL_laststatval;
		1293	data->statcache = PL_statcache;
		1294	}
		1295	OUTPUT:
		1296	RETVAL
		1297
1077	void	1298	void
1078	schedule(...)	1299	_set_state (char *data_)
1079	PROTOTYPE:	1300	PROTOTYPE: $
1080	CODE:	1301	CODE:
1081	api_schedule ();	1302	{
		1303	struct io_state *data = (void *)data_;
1082		1304
1083	void	1305	errno = data->errorno;
1084	cede(...)	1306	PL_laststype = data->laststype;
1085	PROTOTYPE:	1307	PL_laststatval = data->laststatval;
1086	CODE:	1308	PL_statcache = data->statcache;
1087	api_cede ();	1309	}
1088		1310

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines