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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.54 by pcg, Sat Mar 13 06:45:04 2004 UTC vs.
Revision 1.137 by root, Sun Jan 14 20:47:53 2007 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	#include <stdio.h>
		10	#include <errno.h>
		11	#include <assert.h>
		12
		13	#ifdef HAVE_MMAP
		14	# include <unistd.h>
		15	# include <sys/mman.h>
		16	# ifndef MAP_ANONYMOUS
		17	# ifdef MAP_ANON
		18	# define MAP_ANONYMOUS MAP_ANON
		19	# else
		20	# undef HAVE_MMAP
		21	# endif
		22	# endif
		23	# include <limits.h>
		24	# ifndef PAGESIZE
		25	# define PAGESIZE pagesize
		26	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		27	static long pagesize;
		28	# else
		29	# define BOOT_PAGESIZE (void)0
		30	# endif
		31	#else
		32	# define PAGESIZE 0
		33	# define BOOT_PAGESIZE (void)0
		34	#endif
		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
8	# ifndef PL_ppaddr	50	# ifndef PL_ppaddr
9	# define PL_ppaddr ppaddr	51	# define PL_ppaddr ppaddr
10	# endif	52	# endif
11	# ifndef call_sv	53	# ifndef call_sv
12	# define call_sv perl_call_sv	54	# define call_sv perl_call_sv
23	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
24	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
25	# endif	67	# endif
26	#endif	68	#endif
27		69
28	#include "libcoro/coro.c"	70	/* 5.8.7 */
29		71	#ifndef SvRV_set
30	#include <signal.h>	72	# define SvRV_set(s,v) SvRV(s) = (v)
31
32	#ifdef HAVE_MMAP
33	# include <unistd.h>
34	# include <sys/mman.h>
35	# ifndef MAP_ANONYMOUS
36	# ifdef MAP_ANON
37	# define MAP_ANONYMOUS MAP_ANON
38	# else
39	# undef HAVE_MMAP
40	# endif
41	# endif	73	#endif
42	#endif
43		74
44	#define SUB_INIT "Coro::State::initialize"	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
45	#define UCORO_STATE "_coro_state"	76	# undef STACKGUARD
		77	#endif
		78
		79	#ifndef STACKGUARD
		80	# define STACKGUARD 0
		81	#endif
		82
		83	/* prefer perl internal functions over our own? */
		84	#ifndef PREFER_PERL_FUNCTIONS
		85	# define PREFER_PERL_FUNCTIONS 0
		86	#endif
46		87
47	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* The next macro should declare a variable stacklevel that contains and approximation
48	* to the current C stack pointer. Its property is that it changes with each call	89	* to the current C stack pointer. Its property is that it changes with each call
49	* and should be unique. */	90	* and should be unique. */
		91	#define dSTACKLEVEL int stacklevel
50	#define dSTACKLEVEL void *stacklevel = &stacklevel	92	#define STACKLEVEL ((void *)&stacklevel)
51		93
52	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
53		95
54	#define labs(l) ((l) >= 0 ? (l) : -(l))	96	#if __GNUC__ >= 3
		97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		99	#else
		100	# define attribute(x)
		101	# define BARRIER
		102	#endif
		103
		104	#define NOINLINE attribute ((noinline))
55		105
56	#include "CoroAPI.h"	106	#include "CoroAPI.h"
57		107
		108	#ifdef USE_ITHREADS
		109	static perl_mutex coro_mutex;
		110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		112	#else
		113	# define LOCK (void)0
		114	# define UNLOCK (void)0
		115	#endif
		116
		117	/* helper storage struct for Coro::AIO */
		118	struct io_state
		119	{
		120	int errorno;
		121	I32 laststype;
		122	int laststatval;
		123	Stat_t statcache;
		124	};
		125
58	static struct CoroAPI coroapi;	126	static struct CoroAPI coroapi;
		127	static AV main_mainstack; / used to differentiate between $main and others */
		128	static HV coro_state_stash, coro_stash;
		129	static SV coro_mortal; / will be freed after next transfer */
59		130
60	/* this is actually not only the c stack but also c registers etc... */	131	static struct coro_cctx *cctx_first;
		132	static int cctx_count, cctx_idle;
		133
		134	/* this is a structure representing a c-level coroutine */
61	typedef struct {	135	typedef struct coro_cctx {
62	int refcnt; /* pointer reference counter */	136	struct coro_cctx *next;
63	int usecnt; /* shared by how many coroutines */
64	int gencnt; /* generation counter */
65		137
66	coro_context cctx;	138	/* the stack */
67
68	void *sptr;	139	void *sptr;
69	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
70	} coro_stack;
71		141
		142	/* cpu state */
		143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		145	JMPENV *top_env;
		146	coro_context cctx;
		147
		148	int inuse;
		149
		150	#if USE_VALGRIND
		151	int valgrind_id;
		152	#endif
		153	} coro_cctx;
		154
		155	enum {
		156	CF_RUNNING = 0x0001, /* coroutine is running */
		157	CF_READY = 0x0002, /* coroutine is ready */
		158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		160	};
		161
		162	/* this is a structure representing a perl-level coroutine */
72	struct coro {	163	struct coro {
73	/* the top-level JMPENV for each coroutine, needed to catch dies. */	164	/* the c coroutine allocated to this perl coroutine, if any */
74	JMPENV start_env;	165	coro_cctx *cctx;
75
76	/* the optional C context */
77	coro_stack *stack;
78	void *cursp;
79	int gencnt;
80
81	/* optionally saved, might be zero */
82	AV *defav;
83	SV *defsv;
84	SV *errsv;
85
86	/* saved global state not related to stacks */
87	U8 dowarn;
88	I32 in_eval;
89
90	/* the stacks and related info (callchain etc..) */
91	PERL_SI *curstackinfo;
92	AV *curstack;
93	AV *mainstack;
94	SV **stack_sp;
95	OP *op;
96	SV **curpad;
97	AV *comppad;
98	SV **stack_base;
99	SV **stack_max;
100	SV **tmps_stack;
101	I32 tmps_floor;
102	I32 tmps_ix;
103	I32 tmps_max;
104	I32 *markstack;
105	I32 *markstack_ptr;
106	I32 *markstack_max;
107	I32 *scopestack;
108	I32 scopestack_ix;
109	I32 scopestack_max;
110	ANY *savestack;
111	I32 savestack_ix;
112	I32 savestack_max;
113	OP **retstack;
114	I32 retstack_ix;
115	I32 retstack_max;
116	COP *curcop;
117	JMPENV *top_env;
118		166
119	/* data associated with this coroutine (initial args) */	167	/* data associated with this coroutine (initial args) */
120	AV *args;	168	AV *args;
		169	int refcnt;
		170	int save; /* CORO_SAVE flags */
		171	int flags; /* CF_ flags */
		172
		173	/* optionally saved, might be zero */
		174	AV defav; / @_ */
		175	SV defsv; / $_ */
		176	SV errsv; / $@ */
		177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
		179
		180	#define VAR(name,type) type name;
		181	# include "state.h"
		182	#undef VAR
		183
		184	/* coro process data */
		185	int prio;
121	};	186	};
122		187
123	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
124	typedef struct coro *Coro__State_or_hashref;	189	typedef struct coro *Coro__State_or_hashref;
125		190
126	static AV main_mainstack; / used to differentiate between $main and others */	191	/ Coro ******************************************************************/
127	static HV *coro_state_stash;
128	static SV *ucoro_state_sv;
129	static U32 ucoro_state_hash;
130	static HV *padlist_cache;
131	static SV coro_mortal; / will be freed after next transfer */
132		192
133	/* mostly copied from op.c:cv_clone2 */	193	#define PRIO_MAX 3
134	STATIC AV *	194	#define PRIO_HIGH 1
135	clone_padlist (AV *protopadlist)	195	#define PRIO_NORMAL 0
		196	#define PRIO_LOW -1
		197	#define PRIO_IDLE -3
		198	#define PRIO_MIN -4
		199
		200	/* for Coro.pm */
		201	static SV *coro_current;
		202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		203	static int coro_nready;
		204
		205	/ lowlevel stuff ********************************************************/
		206
		207	static AV *
		208	coro_clone_padlist (CV *cv)
136	{	209	{
137	AV *av;	210	AV *padlist = CvPADLIST (cv);
138	I32 ix;
139	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
140	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
141	SV **pname = AvARRAY (protopad_name);
142	SV **ppad = AvARRAY (protopad);
143	I32 fname = AvFILLp (protopad_name);
144	I32 fpad = AvFILLp (protopad);
145	AV newpadlist, newpad_name, *newpad;	211	AV newpadlist, newpad;
146	SV **npad;
147
148	newpad_name = newAV ();
149	for (ix = fname; ix >= 0; ix--)
150	av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
151
152	newpad = newAV ();
153	av_fill (newpad, AvFILLp (protopad));
154	npad = AvARRAY (newpad);
155		212
156	newpadlist = newAV ();	213	newpadlist = newAV ();
157	AvREAL_off (newpadlist);	214	AvREAL_off (newpadlist);
158	av_store (newpadlist, 0, (SV *) newpad_name);	215	#if PERL_VERSION_ATLEAST (5,9,0)
		216	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		217	#else
		218	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		219	#endif
		220	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		221	--AvFILLp (padlist);
		222
		223	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
159	av_store (newpadlist, 1, (SV *) newpad);	224	av_store (newpadlist, 1, (SV *)newpad);
160
161	av = newAV (); /* will be @_ */
162	av_extend (av, 0);
163	av_store (newpad, 0, (SV *) av);
164	AvFLAGS (av) = AVf_REIFY;
165
166	for (ix = fpad; ix > 0; ix--)
167	{
168	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
169	if (namesv && namesv != &PL_sv_undef)
170	{
171	char name = SvPVX (namesv); / XXX */
172	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
173	{ /* lexical from outside? */
174	npad[ix] = SvREFCNT_inc (ppad[ix]);
175	}
176	else
177	{ /* our own lexical */
178	SV *sv;
179	if (*name == '&')
180	sv = SvREFCNT_inc (ppad[ix]);
181	else if (*name == '@')
182	sv = (SV *) newAV ();
183	else if (*name == '%')
184	sv = (SV *) newHV ();
185	else
186	sv = NEWSV (0, 0);
187	#ifdef SvPADBUSY
188	if (!SvPADBUSY (sv))
189	#endif
190	SvPADMY_on (sv);
191	npad[ix] = sv;
192	}
193	}
194	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
195	{
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	}
205
206	#if 0 /* return -ENOTUNDERSTOOD */
207	/* Now that vars are all in place, clone nested closures. */
208
209	for (ix = fpad; ix > 0; ix--) {
210	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
211	if (namesv
212	&& namesv != &PL_sv_undef
213	&& !(SvFLAGS(namesv) & SVf_FAKE)
214	&& *SvPVX(namesv) == '&'
215	&& CvCLONE(ppad[ix]))
216	{
217	CV kid = cv_clone((CV)ppad[ix]);
218	SvREFCNT_dec(ppad[ix]);
219	CvCLONE_on(kid);
220	SvPADMY_on(kid);
221	npad[ix] = (SV*)kid;
222	}
223	}
224	#endif
225		225
226	return newpadlist;	226	return newpadlist;
227	}	227	}
228		228
229	STATIC void	229	static void
230	free_padlist (AV *padlist)	230	free_padlist (AV *padlist)
231	{	231	{
232	/* may be during global destruction */	232	/* may be during global destruction */
233	if (SvREFCNT (padlist))	233	if (SvREFCNT (padlist))
234	{	234	{
…		…
248		248
249	SvREFCNT_dec ((SV*)padlist);	249	SvREFCNT_dec ((SV*)padlist);
250	}	250	}
251	}	251	}
252		252
253	STATIC int	253	static int
254	coro_cv_free (pTHX_ SV sv, MAGIC mg)	254	coro_cv_free (pTHX_ SV sv, MAGIC mg)
255	{	255	{
256	AV *padlist;	256	AV *padlist;
257	AV av = (AV )mg->mg_obj;	257	AV av = (AV )mg->mg_obj;
258		258
259	/* casting is fun. */	259	/* casting is fun. */
260	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	260	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
261	free_padlist (padlist);	261	free_padlist (padlist);
		262
		263	SvREFCNT_dec (av);
		264
		265	return 0;
262	}	266	}
263		267
264	#define PERL_MAGIC_coro PERL_MAGIC_ext	268	#define PERL_MAGIC_coro PERL_MAGIC_ext
265		269
266	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	270	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
267		271
		272	#define CORO_MAGIC(cv) \
		273	SvMAGIC (cv) \
		274	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		275	? SvMAGIC (cv) \
		276	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		277	: 0
		278
268	/* the next two functions merely cache the padlists */	279	/* the next two functions merely cache the padlists */
269	STATIC void	280	static void
270	get_padlist (CV *cv)	281	get_padlist (CV *cv)
271	{	282	{
272	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	283	MAGIC *mg = CORO_MAGIC (cv);
		284	AV *av;
273		285
274	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
275	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
276	else	288	else
		289	{
		290	#if PREFER_PERL_FUNCTIONS
		291	/* this is probably cleaner, but also slower? */
		292	CV *cp = Perl_cv_clone (cv);
		293	CvPADLIST (cv) = CvPADLIST (cp);
		294	CvPADLIST (cp) = 0;
		295	SvREFCNT_dec (cp);
		296	#else
277	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	297	CvPADLIST (cv) = coro_clone_padlist (cv);
		298	#endif
		299	}
278	}	300	}
279		301
280	STATIC void	302	static void
281	put_padlist (CV *cv)	303	put_padlist (CV *cv)
282	{	304	{
283	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	305	MAGIC *mg = CORO_MAGIC (cv);
		306	AV *av;
284		307
285	if (!mg)	308	if (!mg)
286	{	309	{
287	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	310	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
288	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	311	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
289	mg->mg_virtual = &vtbl_coro;	312	mg->mg_virtual = &vtbl_coro;
290	mg->mg_obj = (SV *)newAV ();	313	mg->mg_obj = (SV *)newAV ();
291	}	314	}
292		315
293	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	316	av = (AV *)mg->mg_obj;
		317
		318	if (AvFILLp (av) >= AvMAX (av))
		319	av_extend (av, AvMAX (av) + 1);
		320
		321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
294	}	322	}
		323
		324	/ load & save, init *****************************************************/
295		325
296	#define SB do {	326	#define SB do {
297	#define SE } while (0)	327	#define SE } while (0)
298		328
299	#define LOAD(state) load_state(aTHX_ (state));
300	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
301
302	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
303		330
304	static void	331	static void
305	load_state(pTHX_ Coro__State c)	332	load_perl (Coro__State c)
306	{	333	{
307	PL_dowarn = c->dowarn;	334	#define VAR(name,type) PL_ ## name = c->name;
308	PL_in_eval = c->in_eval;	335	# include "state.h"
309		336	#undef VAR
310	PL_curstackinfo = c->curstackinfo;
311	PL_curstack = c->curstack;
312	PL_mainstack = c->mainstack;
313	PL_stack_sp = c->stack_sp;
314	PL_op = c->op;
315	PL_curpad = c->curpad;
316	PL_comppad = c->comppad;
317	PL_stack_base = c->stack_base;
318	PL_stack_max = c->stack_max;
319	PL_tmps_stack = c->tmps_stack;
320	PL_tmps_floor = c->tmps_floor;
321	PL_tmps_ix = c->tmps_ix;
322	PL_tmps_max = c->tmps_max;
323	PL_markstack = c->markstack;
324	PL_markstack_ptr = c->markstack_ptr;
325	PL_markstack_max = c->markstack_max;
326	PL_scopestack = c->scopestack;
327	PL_scopestack_ix = c->scopestack_ix;
328	PL_scopestack_max = c->scopestack_max;
329	PL_savestack = c->savestack;
330	PL_savestack_ix = c->savestack_ix;
331	PL_savestack_max = c->savestack_max;
332	PL_retstack = c->retstack;
333	PL_retstack_ix = c->retstack_ix;
334	PL_retstack_max = c->retstack_max;
335	PL_curcop = c->curcop;
336	PL_top_env = c->top_env;
337		337
338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		341	if (c->irssv)
		342	{
		343	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		344	SvREFCNT_dec (c->irssv);
		345	else
		346	{
		347	REPLACE_SV (PL_rs, c->irssv);
		348	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		349	sv_setsv (c->irssv_sv, PL_rs);
		350	}
		351	}
341		352
342	{	353	{
343	dSP;	354	dSP;
344	CV *cv;	355	CV *cv;
345		356
346	/* now do the ugly restore mess */	357	/* now do the ugly restore mess */
347	while ((cv = (CV *)POPs))	358	while ((cv = (CV *)POPs))
348	{	359	{
349	AV padlist = (AV )POPs;
350
351	if (padlist)
352	{
353	put_padlist (cv); /* mark this padlist as available */	360	put_padlist (cv); /* mark this padlist as available */
354	CvPADLIST(cv) = padlist;	361	CvDEPTH (cv) = PTR2IV (POPs);
355	#ifdef USE_THREADS	362	CvPADLIST (cv) = (AV *)POPs;
356	/CvOWNER(cv) = (struct perl_thread )POPs;*/
357	#endif
358	}
359
360	++CvDEPTH(cv);
361	}	363	}
362		364
363	PUTBACK;	365	PUTBACK;
364	}	366	}
365	}	367	}
366		368
367	static void	369	static void
368	save_state(pTHX_ Coro__State c, int flags)	370	save_perl (Coro__State c)
369	{	371	{
370	{	372	{
371	dSP;	373	dSP;
372	I32 cxix = cxstack_ix;	374	I32 cxix = cxstack_ix;
373	PERL_CONTEXT *ccstk = cxstack;	375	PERL_CONTEXT *ccstk = cxstack;
…		…
376	/*	378	/*
377	* the worst thing you can imagine happens first - we have to save	379	* the worst thing you can imagine happens first - we have to save
378	* (and reinitialize) all cv's in the whole callchain :(	380	* (and reinitialize) all cv's in the whole callchain :(
379	*/	381	*/
380		382
		383	EXTEND (SP, 3 + 1);
381	PUSHs (Nullsv);	384	PUSHs (Nullsv);
382	/* this loop was inspired by pp_caller */	385	/* this loop was inspired by pp_caller */
383	for (;;)	386	for (;;)
384	{	387	{
385	while (cxix >= 0)	388	while (cxix >= 0)
386	{	389	{
387	PERL_CONTEXT *cx = &ccstk[cxix--];	390	PERL_CONTEXT *cx = &ccstk[cxix--];
388		391
389	if (CxTYPE(cx) == CXt_SUB)	392	if (CxTYPE (cx) == CXt_SUB)
390	{	393	{
391	CV *cv = cx->blk_sub.cv;	394	CV *cv = cx->blk_sub.cv;
		395
392	if (CvDEPTH(cv))	396	if (CvDEPTH (cv))
393	{	397	{
394	#ifdef USE_THREADS
395	/XPUSHs ((SV )CvOWNER(cv));*/
396	/CvOWNER(cv) = 0;/
397	/error must unlock this cv etc.. etc.../
398	#endif
399	EXTEND (SP, CvDEPTH(cv)*2);	398	EXTEND (SP, 3);
400
401	while (--CvDEPTH(cv))
402	{
403	/* this tells the restore code to increment CvDEPTH */
404	PUSHs (Nullsv);
405	PUSHs ((SV *)cv);
406	}
407
408	PUSHs ((SV *)CvPADLIST(cv));	399	PUSHs ((SV *)CvPADLIST (cv));
		400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
409	PUSHs ((SV *)cv);	401	PUSHs ((SV *)cv);
410		402
		403	CvDEPTH (cv) = 0;
411	get_padlist (cv); /* this is a monster */	404	get_padlist (cv);
412	}	405	}
413	}	406	}
414	#ifdef CXt_FORMAT
415	else if (CxTYPE(cx) == CXt_FORMAT)
416	{
417	/* I never used formats, so how should I know how these are implemented? */
418	/* my bold guess is as a simple, plain sub... */
419	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
420	}
421	#endif
422	}	407	}
423		408
424	if (top_si->si_type == PERLSI_MAIN)	409	if (top_si->si_type == PERLSI_MAIN)
425	break;	410	break;
426		411
…		…
430	}	415	}
431		416
432	PUTBACK;	417	PUTBACK;
433	}	418	}
434		419
435	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	420	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
436	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
437	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
438		424
439	c->dowarn = PL_dowarn;	425	#define VAR(name,type)c->name = PL_ ## name;
440	c->in_eval = PL_in_eval;	426	# include "state.h"
441		427	#undef VAR
442	c->curstackinfo = PL_curstackinfo;
443	c->curstack = PL_curstack;
444	c->mainstack = PL_mainstack;
445	c->stack_sp = PL_stack_sp;
446	c->op = PL_op;
447	c->curpad = PL_curpad;
448	c->comppad = PL_comppad;
449	c->stack_base = PL_stack_base;
450	c->stack_max = PL_stack_max;
451	c->tmps_stack = PL_tmps_stack;
452	c->tmps_floor = PL_tmps_floor;
453	c->tmps_ix = PL_tmps_ix;
454	c->tmps_max = PL_tmps_max;
455	c->markstack = PL_markstack;
456	c->markstack_ptr = PL_markstack_ptr;
457	c->markstack_max = PL_markstack_max;
458	c->scopestack = PL_scopestack;
459	c->scopestack_ix = PL_scopestack_ix;
460	c->scopestack_max = PL_scopestack_max;
461	c->savestack = PL_savestack;
462	c->savestack_ix = PL_savestack_ix;
463	c->savestack_max = PL_savestack_max;
464	c->retstack = PL_retstack;
465	c->retstack_ix = PL_retstack_ix;
466	c->retstack_max = PL_retstack_max;
467	c->curcop = PL_curcop;
468	c->top_env = PL_top_env;
469	}	428	}
470		429
471	/*	430	/*
472	* allocate various perl stacks. This is an exact copy	431	* allocate various perl stacks. This is an exact copy
473	* of perl.c:init_stacks, except that it uses less memory	432	* of perl.c:init_stacks, except that it uses less memory
474	* on the (sometimes correct) assumption that coroutines do	433	* on the (sometimes correct) assumption that coroutines do
475	* not usually need a lot of stackspace.	434	* not usually need a lot of stackspace.
476	*/	435	*/
477	STATIC void	436	#if PREFER_PERL_FUNCTIONS
		437	# define coro_init_stacks init_stacks
		438	#else
		439	static void
478	coro_init_stacks (pTHX)	440	coro_init_stacks ()
479	{	441	{
480	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
481	PL_curstackinfo->si_type = PERLSI_MAIN;	443	PL_curstackinfo->si_type = PERLSI_MAIN;
482	PL_curstack = PL_curstackinfo->si_stack;	444	PL_curstack = PL_curstackinfo->si_stack;
483	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	445	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
484		446
485	PL_stack_base = AvARRAY(PL_curstack);	447	PL_stack_base = AvARRAY(PL_curstack);
486	PL_stack_sp = PL_stack_base;	448	PL_stack_sp = PL_stack_base;
487	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	449	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
488		450
489	New(50,PL_tmps_stack,96,SV*);	451	New(50,PL_tmps_stack,128,SV*);
490	PL_tmps_floor = -1;	452	PL_tmps_floor = -1;
491	PL_tmps_ix = -1;	453	PL_tmps_ix = -1;
492	PL_tmps_max = 96;	454	PL_tmps_max = 128;
493		455
494	New(54,PL_markstack,16,I32);	456	New(54,PL_markstack,32,I32);
495	PL_markstack_ptr = PL_markstack;	457	PL_markstack_ptr = PL_markstack;
496	PL_markstack_max = PL_markstack + 16;	458	PL_markstack_max = PL_markstack + 32;
497		459
498	#ifdef SET_MARK_OFFSET	460	#ifdef SET_MARK_OFFSET
499	SET_MARK_OFFSET;	461	SET_MARK_OFFSET;
500	#endif	462	#endif
501		463
502	New(54,PL_scopestack,16,I32);	464	New(54,PL_scopestack,32,I32);
503	PL_scopestack_ix = 0;	465	PL_scopestack_ix = 0;
504	PL_scopestack_max = 16;	466	PL_scopestack_max = 32;
505		467
506	New(54,PL_savestack,96,ANY);	468	New(54,PL_savestack,64,ANY);
507	PL_savestack_ix = 0;	469	PL_savestack_ix = 0;
508	PL_savestack_max = 96;	470	PL_savestack_max = 64;
509		471
		472	#if !PERL_VERSION_ATLEAST (5,9,0)
510	New(54,PL_retstack,8,OP*);	473	New(54,PL_retstack,16,OP*);
511	PL_retstack_ix = 0;	474	PL_retstack_ix = 0;
512	PL_retstack_max = 8;	475	PL_retstack_max = 16;
		476	#endif
513	}	477	}
		478	#endif
514		479
515	/*	480	/*
516	* destroy the stacks, the callchain etc...	481	* destroy the stacks, the callchain etc...
517	*/	482	*/
518	STATIC void	483	static void
519	destroy_stacks(pTHX)	484	coro_destroy_stacks ()
520	{	485	{
521	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
522	{	487	{
523	/* is this ugly, I ask? */	488	/* restore all saved variables and stuff */
524	LEAVE_SCOPE (0);	489	LEAVE_SCOPE (0);
		490	assert (PL_tmps_floor == -1);
525		491
526	/* sure it is, but more important: is it correct?? :/ */	492	/* free all temporaries */
527	FREETMPS;	493	FREETMPS;
		494	assert (PL_tmps_ix == -1);
		495
		496	/* unwind all extra stacks */
		497	POPSTACK_TO (PL_mainstack);
		498
		499	/* unwind main stack */
		500	dounwind (-1);
528	}	501	}
529		502
530	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
531	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
532		505
533	while (PL_curstackinfo)	506	while (PL_curstackinfo)
534	{	507	{
535	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
536		509
537	{
538	dSP;
539	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
540	PUTBACK; /* possibly superfluous */
541	}
542
543	if (!IN_DESTRUCT)	510	if (!IN_DESTRUCT)
544	{
545	dounwind(-1);
546	SvREFCNT_dec(PL_curstackinfo->si_stack);	511	SvREFCNT_dec (PL_curstackinfo->si_stack);
547	}
548		512
549	Safefree(PL_curstackinfo->si_cxstack);	513	Safefree (PL_curstackinfo->si_cxstack);
550	Safefree(PL_curstackinfo);	514	Safefree (PL_curstackinfo);
551	PL_curstackinfo = p;	515	PL_curstackinfo = p;
552	}	516	}
553		517
554	Safefree(PL_tmps_stack);	518	Safefree (PL_tmps_stack);
555	Safefree(PL_markstack);	519	Safefree (PL_markstack);
556	Safefree(PL_scopestack);	520	Safefree (PL_scopestack);
557	Safefree(PL_savestack);	521	Safefree (PL_savestack);
		522	#if !PERL_VERSION_ATLEAST (5,9,0)
558	Safefree(PL_retstack);	523	Safefree (PL_retstack);
559	}
560
561	static void
562	allocate_stack (Coro__State ctx, int alloc)
563	{
564	coro_stack *stack;
565
566	New (0, stack, 1, coro_stack);
567
568	stack->refcnt = 1;
569	stack->usecnt = 1;
570	stack->gencnt = ctx->gencnt = 0;
571	if (alloc)
572	{
573	#if HAVE_MMAP
574	stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
575	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
576	if (stack->sptr == (void *)-1)
577	#endif	524	#endif
578	{
579	/FIXME//D//* reasonable stack size! */
580	stack->ssize = - (8192 * sizeof (long));
581	New (0, stack->sptr, 8192, long);
582	}
583	}
584	else
585	stack->sptr = 0;
586
587	ctx->stack = stack;
588	}	525	}
589		526
590	static void	527	/ coroutine stack handling **********************************************/
591	deallocate_stack (Coro__State ctx)
592	{
593	coro_stack *stack = ctx->stack;
594		528
595	ctx->stack = 0;
596
597	if (stack)
598	{
599	if (!--stack->refcnt)
600	{
601	#ifdef HAVE_MMAP
602	if (stack->ssize > 0 && stack->sptr)
603	munmap (stack->sptr, stack->ssize);
604	else
605	#endif
606	Safefree (stack->sptr);
607
608	Safefree (stack);
609	}
610	else if (ctx->gencnt == stack->gencnt)
611	--stack->usecnt;
612	}
613	}
614
615	static void	529	static void
616	setup_coro (void *arg)	530	setup_coro (struct coro *coro)
617	{	531	{
618	/*	532	/*
619	* emulate part of the perl startup here.	533	* emulate part of the perl startup here.
620	*/	534	*/
		535
		536	coro_init_stacks ();
		537
		538	PL_curcop = &PL_compiling;
		539	PL_in_eval = EVAL_NULL;
		540	PL_curpm = 0;
		541	PL_localizing = 0;
		542	PL_dirty = 0;
		543	PL_restartop = 0;
		544
		545	{
		546	dSP;
		547	LOGOP myop;
		548
		549	SvREFCNT_dec (GvAV (PL_defgv));
		550	GvAV (PL_defgv) = coro->args; coro->args = 0;
		551
		552	Zero (&myop, 1, LOGOP);
		553	myop.op_next = Nullop;
		554	myop.op_flags = OPf_WANT_VOID;
		555
		556	PUSHMARK (SP);
		557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		558	PUTBACK;
		559	PL_op = (OP *)&myop;
		560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		561	SPAGAIN;
		562	}
		563
		564	ENTER; /* necessary e.g. for dounwind */
		565	}
		566
		567	static void
		568	free_coro_mortal ()
		569	{
		570	if (coro_mortal)
		571	{
		572	SvREFCNT_dec (coro_mortal);
		573	coro_mortal = 0;
		574	}
		575	}
		576
		577	/* inject a fake call to Coro::State::_cctx_init into the execution */
		578	static void NOINLINE
		579	prepare_cctx (coro_cctx *cctx)
		580	{
621	dSP;	581	dSP;
622	Coro__State ctx = (Coro__State)arg;	582	LOGOP myop;
623	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
624		583
625	coro_init_stacks (aTHX);	584	Zero (&myop, 1, LOGOP);
626	/PL_curcop = 0;/	585	myop.op_next = PL_op;
627	/PL_in_eval = PL_in_eval;/ /* inherit */	586	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
628	SvREFCNT_dec (GvAV (PL_defgv));
629	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
630		587
		588	PUSHMARK (SP);
		589	EXTEND (SP, 2);
		590	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		591	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		592	PUTBACK;
		593	PL_op = (OP *)&myop;
		594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
631	SPAGAIN;	595	SPAGAIN;
632
633	if (ctx->stack)
634	{
635	ctx->cursp = 0;
636
637	PUSHMARK(SP);
638	PUTBACK;
639	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
640
641	if (SvTRUE (ERRSV))
642	croak (NULL);
643	else
644	croak ("FATAL: CCTXT coroutine returned!");
645	}
646	else
647	{
648	UNOP myop;
649
650	PL_op = (OP *)&myop;
651
652	Zero(&myop, 1, UNOP);
653	myop.op_next = Nullop;
654	myop.op_flags = OPf_WANT_VOID;
655
656	PUSHMARK(SP);
657	XPUSHs (sub_init);
658	/*
659	* the next line is slightly wrong, as PL_op->op_next
660	* is actually being executed so we skip the first op.
661	* that doesn't matter, though, since it is only
662	* pp_nextstate and we never return...
663	* ah yes, and I don't care anyways ;)
664	*/
665	PUTBACK;
666	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
667	SPAGAIN;
668
669	ENTER; /* necessary e.g. for dounwind */
670	}
671	}	596	}
672		597
673	static void	598	static void
674	continue_coro (void *arg)	599	coro_run (void *arg)
675	{	600	{
		601	/* coro_run is the alternative tail of transfer(), so unlock here. */
		602	UNLOCK;
		603
676	/*	604	/*
677	* this is a _very_ stripped down perl interpreter ;)	605	* this is a _very_ stripped down perl interpreter ;)
678	*/	606	*/
679	Coro__State ctx = (Coro__State)arg;
680	JMPENV coro_start_env;
681
682	PL_top_env = &ctx->start_env;	607	PL_top_env = &PL_start_env;
683		608
684	ctx->cursp = 0;	609	/* inject call to cctx_init */
685	PL_op = PL_op->op_next;	610	prepare_cctx ((coro_cctx *)arg);
686	CALLRUNOPS(aTHX);
687		611
		612	/* somebody will hit me for both perl_run and PL_restartop */
		613	PL_restartop = PL_op;
		614	perl_run (PL_curinterp);
		615
		616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
688	abort ();	617	abort ();
689	}	618	}
690		619
691	STATIC void	620	static coro_cctx *
		621	cctx_new ()
		622	{
		623	coro_cctx *cctx;
		624
		625	++cctx_count;
		626
		627	Newz (0, cctx, 1, coro_cctx);
		628
		629	#if HAVE_MMAP
		630
		631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		632	/* mmap supposedly does allocate-on-write for us */
		633	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		634
		635	if (cctx->sptr == (void *)-1)
		636	{
		637	perror ("FATAL: unable to mmap stack for coroutine");
		638	_exit (EXIT_FAILURE);
		639	}
		640
		641	# if STACKGUARD
		642	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		643	# endif
		644
		645	#else
		646
		647	cctx->ssize = STACKSIZE * (long)sizeof (long);
		648	New (0, cctx->sptr, STACKSIZE, long);
		649
		650	if (!cctx->sptr)
		651	{
		652	perror ("FATAL: unable to malloc stack for coroutine");
		653	_exit (EXIT_FAILURE);
		654	}
		655
		656	#endif
		657
		658	#if USE_VALGRIND
		659	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		660	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		661	cctx->ssize + (char *)cctx->sptr
		662	);
		663	#endif
		664
		665	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		666
		667	return cctx;
		668	}
		669
		670	static void
		671	cctx_destroy (coro_cctx *cctx)
		672	{
		673	if (!cctx)
		674	return;
		675
		676	--cctx_count;
		677
		678	#if USE_VALGRIND
		679	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		680	#endif
		681
		682	#if HAVE_MMAP
		683	munmap (cctx->sptr, cctx->ssize);
		684	#else
		685	Safefree (cctx->sptr);
		686	#endif
		687
		688	Safefree (cctx);
		689	}
		690
		691	static coro_cctx *
		692	cctx_get ()
		693	{
		694	coro_cctx *cctx;
		695
		696	if (cctx_first)
		697	{
		698	cctx = cctx_first;
		699	cctx_first = cctx->next;
		700	--cctx_idle;
		701	}
		702	else
		703	{
		704	cctx = cctx_new ();
		705	PL_op = PL_op->op_next;
		706	}
		707
		708	return cctx;
		709	}
		710
		711	static void
		712	cctx_put (coro_cctx *cctx)
		713	{
		714	/* free another cctx if overlimit */
		715	if (cctx_idle >= MAX_IDLE_CCTX)
		716	{
		717	coro_cctx *first = cctx_first;
		718	cctx_first = first->next;
		719	--cctx_idle;
		720
		721	assert (!first->inuse);
		722	cctx_destroy (first);
		723	}
		724
		725	++cctx_idle;
		726	cctx->next = cctx_first;
		727	cctx_first = cctx;
		728	}
		729
		730	/ coroutine switching ***************************************************/
		731
		732	/* never call directly, always through the coro_state_transfer global variable */
		733	static void NOINLINE
692	transfer(pTHX_ struct coro prev, struct coro next, int flags)	734	transfer (struct coro prev, struct coro next)
693	{	735	{
694	dSTACKLEVEL;	736	dSTACKLEVEL;
695	static struct coro *xnext;
696		737
		738	/* sometimes transfer is only called to set idle_sp */
		739	if (!next)
		740	{
		741	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		743	}
697	if (prev != next)	744	else if (prev != next)
698	{	745	{
699	xnext = next;	746	coro_cctx *prev__cctx;
700		747
701	if (next->mainstack)	748	if (prev->flags & CF_NEW)
702	{	749	{
703	SAVE (prev, flags);	750	/* create a new empty context */
704	LOAD (next);	751	Newz (0, prev->cctx, 1, coro_cctx);
705		752	prev->cctx->inuse = 1;
706	/* mark this state as in-use */	753	prev->flags &= ~CF_NEW;
707	next->mainstack = 0;	754	prev->flags \|= CF_RUNNING;
708	next->tmps_ix = -2;
709
710	/* stacklevel changed? if yes, grab the stack for us! */
711	if (flags & TRANSFER_SAVE_CCTXT)
712	{
713	if (!prev->stack)
714	allocate_stack (prev, 0);
715	else if (prev->cursp != stacklevel
716	&& prev->stack->usecnt > 1)
717	{
718	prev->gencnt = ++prev->stack->gencnt;
719	prev->stack->usecnt = 1;
720	}
721
722	/* has our stack been invalidated? */
723	if (next->stack && next->stack->gencnt != next->gencnt)
724	{
725	deallocate_stack (next);
726	allocate_stack (next, 1);
727	coro_create (&(next->stack->cctx),
728	continue_coro, (void *)next,
729	next->stack->sptr, labs (next->stack->ssize));
730	}
731
732	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
733	/* don't add any code here */
734	}
735
736	}	755	}
737	else if (next->tmps_ix == -2)	756
738	croak ("tried to transfer to running coroutine");	757	/TODO: must not croak here /
		758	if (!prev->flags & CF_RUNNING)
		759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		760
		761	if (next->flags & CF_RUNNING)
		762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		763
		764	if (next->flags & CF_DESTROYED)
		765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		766
		767	prev->flags &= ~CF_RUNNING;
		768	next->flags \|= CF_RUNNING;
		769
		770	LOCK;
		771
		772	if (next->flags & CF_NEW)
		773	{
		774	/* need to start coroutine */
		775	next->flags &= ~CF_NEW;
		776	/* first get rid of the old state */
		777	save_perl (prev);
		778	/* setup coroutine call */
		779	setup_coro (next);
		780	/* need a new stack */
		781	assert (!next->cctx);
		782	}
739	else	783	else
740	{	784	{
741	SAVE (prev, -1); /* first get rid of the old state */	785	/* coroutine already started */
742		786	save_perl (prev);
743	if (flags & TRANSFER_SAVE_CCTXT)	787	load_perl (next);
744	{
745	if (!prev->stack)
746	allocate_stack (prev, 0);
747
748	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
749	{
750	PL_top_env = &next->start_env;
751
752	setup_coro (next);
753
754	prev->stack->refcnt++;
755	prev->stack->usecnt++;
756	next->stack = prev->stack;
757	next->gencnt = prev->gencnt;
758	}
759	else
760	{
761	assert (!next->stack);
762	allocate_stack (next, 1);
763	coro_create (&(next->stack->cctx),
764	setup_coro, (void *)next,
765	next->stack->sptr, labs (next->stack->ssize));
766	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
767	/* don't add any code here */
768	}
769	}
770	else
771	setup_coro (next);
772	}	788	}
773		789
774	/*	790	prev__cctx = prev->cctx;
775	* xnext is now either prev or next, depending on wether	791
776	* we switched the c stack or not. that's why I use a global	792	/* possibly "free" the cctx */
777	* variable, that should become thread-specific at one point.	793	if (prev__cctx->idle_sp == STACKLEVEL)
778	*/	794	{
779	xnext->cursp = stacklevel;	795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
780	}	796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
781		797
782	if (coro_mortal)	798	prev->cctx = 0;
		799
		800	cctx_put (prev__cctx);
		801	prev__cctx->inuse = 0;
		802	}
		803
		804	if (!next->cctx)
		805	{
		806	next->cctx = cctx_get ();
		807	assert (!next->cctx->inuse);
		808	next->cctx->inuse = 1;
		809	}
		810
		811	if (prev__cctx != next->cctx)
		812	{
		813	prev__cctx->top_env = PL_top_env;
		814	PL_top_env = next->cctx->top_env;
		815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		816	}
		817
		818	free_coro_mortal ();
		819	UNLOCK;
783	{	820	}
784	SvREFCNT_dec (coro_mortal);	821	}
785	coro_mortal = 0;	822
		823	struct transfer_args
		824	{
		825	struct coro prev, next;
		826	};
		827
		828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
		829
		830	/ high level stuff ******************************************************/
		831
		832	static int
		833	coro_state_destroy (struct coro *coro)
		834	{
		835	if (coro->flags & CF_DESTROYED)
		836	return 0;
		837
		838	coro->flags \|= CF_DESTROYED;
		839
		840	if (coro->flags & CF_READY)
786	}	841	{
787	}	842	/* reduce nready, as destroying a ready coro effectively unreadies it */
		843	/* alternative: look through all ready queues and remove it */
		844	LOCK;
		845	--coro_nready;
		846	UNLOCK;
		847	}
		848	else
		849	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
788		850
789	#define SV_CORO(sv,func) \	851	if (coro->mainstack && coro->mainstack != main_mainstack)
790	do { \	852	{
791	if (SvROK (sv)) \	853	assert (!(coro->flags & CF_RUNNING));
792	sv = SvRV (sv); \
793	\
794	if (SvTYPE(sv) == SVt_PVHV) \
795	{ \
796	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
797	\
798	if (!he) \
799	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
800	\
801	(sv) = SvRV (HeVAL(he)); \
802	} \
803	\
804	/* must also be changed inside Coro::Cont::yield */ \
805	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
806	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
807	\
808	} while(0)
809		854
810	#define SvSTATE(sv) (struct coro *)SvIV (sv)	855	struct coro temp;
		856	Zero (&temp, 1, struct coro);
		857	temp.save = CORO_SAVE_ALL;
811		858
		859	if (coro->flags & CF_RUNNING)
		860	croak ("FATAL: tried to destroy currently running coroutine");
		861
		862	save_perl (&temp);
		863	load_perl (coro);
		864
		865	coro_destroy_stacks ();
		866
		867	load_perl (&temp); /* this will get rid of defsv etc.. */
		868
		869	coro->mainstack = 0;
		870	}
		871
		872	cctx_destroy (coro->cctx);
		873	SvREFCNT_dec (coro->args);
		874
		875	return 1;
		876	}
		877
812	static void	878	static int
		879	coro_state_free (pTHX_ SV sv, MAGIC mg)
		880	{
		881	struct coro coro = (struct coro )mg->mg_ptr;
		882	mg->mg_ptr = 0;
		883
		884	if (--coro->refcnt < 0)
		885	{
		886	coro_state_destroy (coro);
		887	Safefree (coro);
		888	}
		889
		890	return 0;
		891	}
		892
		893	static int
		894	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		895	{
		896	struct coro coro = (struct coro )mg->mg_ptr;
		897
		898	++coro->refcnt;
		899
		900	return 0;
		901	}
		902
		903	static MGVTBL coro_state_vtbl = {
		904	0, 0, 0, 0,
		905	coro_state_free,
		906	0,
		907	#ifdef MGf_DUP
		908	coro_state_dup,
		909	#else
		910	# define MGf_DUP 0
		911	#endif
		912	};
		913
		914	static struct coro *
		915	SvSTATE (SV *coro)
		916	{
		917	HV *stash;
		918	MAGIC *mg;
		919
		920	if (SvROK (coro))
		921	coro = SvRV (coro);
		922
		923	stash = SvSTASH (coro);
		924	if (stash != coro_stash && stash != coro_state_stash)
		925	{
		926	/* very slow, but rare, check */
		927	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		928	croak ("Coro::State object required");
		929	}
		930
		931	mg = SvMAGIC (coro);
		932	assert (mg->mg_type == PERL_MAGIC_ext);
		933	return (struct coro *)mg->mg_ptr;
		934	}
		935
		936	static void
		937	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		938	{
		939	ta->prev = SvSTATE (prev_sv);
		940	ta->next = SvSTATE (next_sv);
		941	}
		942
		943	static void
813	api_transfer(pTHX_ SV prev, SV next, int flags)	944	api_transfer (SV prev_sv, SV next_sv)
814	{	945	{
815	SV_CORO (prev, "Coro::transfer");	946	struct transfer_args ta;
816	SV_CORO (next, "Coro::transfer");
817		947
818	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	948	prepare_transfer (&ta, prev_sv, next_sv);
		949	TRANSFER (ta);
		950	}
		951
		952	static int
		953	api_save (SV *coro_sv, int new_save)
		954	{
		955	struct coro *coro = SvSTATE (coro_sv);
		956	int old_save = coro->save;
		957
		958	if (new_save >= 0)
		959	coro->save = new_save;
		960
		961	return old_save;
819	}	962	}
820		963
821	/ Coro ******************************************************************/	964	/ Coro ******************************************************************/
822		965
823	#define PRIO_MAX 3
824	#define PRIO_HIGH 1
825	#define PRIO_NORMAL 0
826	#define PRIO_LOW -1
827	#define PRIO_IDLE -3
828	#define PRIO_MIN -4
829
830	/* for Coro.pm */
831	static GV coro_current, coro_idle;
832	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
833	static int coro_nready;
834
835	static void	966	static void
836	coro_enq (SV *sv)	967	coro_enq (SV *coro_sv)
837	{	968	{
838	if (SvTYPE (sv) == SVt_PVHV)
839	{
840	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
841	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
842
843	prio = prio > PRIO_MAX ? PRIO_MAX
844	: prio < PRIO_MIN ? PRIO_MIN
845	: prio;
846
847	av_push (coro_ready [prio - PRIO_MIN], sv);	969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
848	coro_nready++;
849
850	return;
851	}
852
853	croak ("Coro::ready tried to enqueue something that is not a coroutine");
854	}	970	}
855		971
856	static SV *	972	static SV *
857	coro_deq (int min_prio)	973	coro_deq (int min_prio)
858	{	974	{
…		…
861	min_prio -= PRIO_MIN;	977	min_prio -= PRIO_MIN;
862	if (min_prio < 0)	978	if (min_prio < 0)
863	min_prio = 0;	979	min_prio = 0;
864		980
865	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	981	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
866	if (av_len (coro_ready[prio]) >= 0)	982	if (AvFILLp (coro_ready [prio]) >= 0)
867	{
868	coro_nready--;
869	return av_shift (coro_ready[prio]);	983	return av_shift (coro_ready [prio]);
870	}
871		984
872	return 0;	985	return 0;
873	}	986	}
874		987
875	static void	988	static int
876	api_ready (SV *coro)	989	api_ready (SV *coro_sv)
877	{	990	{
		991	struct coro *coro;
		992
878	if (SvROK (coro))	993	if (SvROK (coro_sv))
879	coro = SvRV (coro);	994	coro_sv = SvRV (coro_sv);
880		995
		996	coro = SvSTATE (coro_sv);
		997
		998	if (coro->flags & CF_READY)
		999	return 0;
		1000
		1001	coro->flags \|= CF_READY;
		1002
		1003	LOCK;
881	coro_enq (SvREFCNT_inc (coro));	1004	coro_enq (SvREFCNT_inc (coro_sv));
		1005	++coro_nready;
		1006	UNLOCK;
		1007
		1008	return 1;
		1009	}
		1010
		1011	static int
		1012	api_is_ready (SV *coro_sv)
		1013	{
		1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1015	}
		1016
		1017	static void
		1018	prepare_schedule (struct transfer_args *ta)
		1019	{
		1020	SV prev_sv, next_sv;
		1021
		1022	for (;;)
		1023	{
		1024	LOCK;
		1025	next_sv = coro_deq (PRIO_MIN);
		1026	UNLOCK;
		1027
		1028	/* nothing to schedule: call the idle handler */
		1029	if (!next_sv)
		1030	{
		1031	dSP;
		1032
		1033	ENTER;
		1034	SAVETMPS;
		1035
		1036	PUSHMARK (SP);
		1037	PUTBACK;
		1038	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1039
		1040	FREETMPS;
		1041	LEAVE;
		1042	continue;
		1043	}
		1044
		1045	ta->next = SvSTATE (next_sv);
		1046
		1047	/* cannot transfer to destroyed coros, skip and look for next */
		1048	if (ta->next->flags & CF_DESTROYED)
		1049	{
		1050	SvREFCNT_dec (next_sv);
		1051	/* coro_nready is already taken care of by destroy */
		1052	continue;
		1053	}
		1054
		1055	LOCK;
		1056	--coro_nready;
		1057	UNLOCK;
		1058	break;
		1059	}
		1060
		1061	/* free this only after the transfer */
		1062	prev_sv = SvRV (coro_current);
		1063	SvRV_set (coro_current, next_sv);
		1064	ta->prev = SvSTATE (prev_sv);
		1065
		1066	assert (ta->next->flags & CF_READY);
		1067	ta->next->flags &= ~CF_READY;
		1068
		1069	LOCK;
		1070	free_coro_mortal ();
		1071	coro_mortal = prev_sv;
		1072	UNLOCK;
		1073	}
		1074
		1075	static void
		1076	prepare_cede (struct transfer_args *ta)
		1077	{
		1078	api_ready (coro_current);
		1079	prepare_schedule (ta);
		1080	}
		1081
		1082	static int
		1083	prepare_cede_notself (struct transfer_args *ta)
		1084	{
		1085	if (coro_nready)
		1086	{
		1087	SV *prev = SvRV (coro_current);
		1088	prepare_schedule (ta);
		1089	api_ready (prev);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
882	}	1094	}
883		1095
884	static void	1096	static void
885	api_schedule (void)	1097	api_schedule (void)
886	{	1098	{
887	SV prev, next;	1099	struct transfer_args ta;
888		1100
889	prev = SvRV (GvSV (coro_current));	1101	prepare_schedule (&ta);
890	next = coro_deq (PRIO_MIN);	1102	TRANSFER (ta);
891
892	if (!next)
893	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
894
895	/* free this only after the transfer */
896	coro_mortal = prev;
897	SV_CORO (prev, "Coro::schedule");
898
899	SvRV (GvSV (coro_current)) = next;
900
901	SV_CORO (next, "Coro::schedule");
902
903	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
904	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
905	}	1103	}
906		1104
907	static void	1105	static int
908	api_cede (void)	1106	api_cede (void)
909	{	1107	{
910	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	1108	struct transfer_args ta;
911		1109
912	api_schedule ();	1110	prepare_cede (&ta);
		1111
		1112	if (ta.prev != ta.next)
		1113	{
		1114	TRANSFER (ta);
		1115	return 1;
		1116	}
		1117	else
		1118	return 0;
		1119	}
		1120
		1121	static int
		1122	api_cede_notself (void)
		1123	{
		1124	struct transfer_args ta;
		1125
		1126	if (prepare_cede_notself (&ta))
		1127	{
		1128	TRANSFER (ta);
		1129	return 1;
		1130	}
		1131	else
		1132	return 0;
913	}	1133	}
914		1134
915	MODULE = Coro::State PACKAGE = Coro::State	1135	MODULE = Coro::State PACKAGE = Coro::State
916		1136
917	PROTOTYPES: ENABLE	1137	PROTOTYPES: DISABLE
918		1138
919	BOOT:	1139	BOOT:
920	{ /* {} necessary for stoopid perl-5.6.x */	1140	{
921	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1141	#ifdef USE_ITHREADS
922	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1142	MUTEX_INIT (&coro_mutex);
		1143	#endif
		1144	BOOT_PAGESIZE;
		1145
923	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1146	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
924		1147
925	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1148	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
926	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1149	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
927	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1150	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1151	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
928	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1152	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
929
930	if (!padlist_cache)
931	padlist_cache = newHV ();
932		1153
933	main_mainstack = PL_mainstack;	1154	main_mainstack = PL_mainstack;
934		1155
935	coroapi.ver = CORO_API_VERSION;	1156	coroapi.ver = CORO_API_VERSION;
936	coroapi.transfer = api_transfer;	1157	coroapi.transfer = api_transfer;
937	}
938		1158
939	Coro::State	1159	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
940	_newprocess(args)	1160	}
941	SV * args	1161
942	PROTOTYPE: $	1162	SV *
		1163	new (char *klass, ...)
943	CODE:	1164	CODE:
944	Coro__State coro;	1165	{
		1166	struct coro *coro;
		1167	HV *hv;
		1168	int i;
945		1169
946	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
947	croak ("Coro::State::_newprocess expects an arrayref");
948
949	Newz (0, coro, 1, struct coro);	1170	Newz (0, coro, 1, struct coro);
		1171	coro->args = newAV ();
		1172	coro->save = CORO_SAVE_ALL;
		1173	coro->flags = CF_NEW;
950		1174
951	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1175	hv = newHV ();
952	coro->mainstack = 0; /* actual work is done inside transfer */	1176	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
953	coro->stack = 0;	1177	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
954		1178
955	/* same as JMPENV_BOOTSTRAP */	1179	for (i = 1; i < items; i++)
956	/* we might be able to recycle start_env, but safe is safe */	1180	av_push (coro->args, newSVsv (ST (i)));
957	//Zero(&coro->start_env, 1, JMPENV);	1181	}
958	coro->start_env.je_ret = -1;
959	coro->start_env.je_mustcatch = TRUE;
960
961	RETVAL = coro;
962	OUTPUT:	1182	OUTPUT:
963	RETVAL	1183	RETVAL
964		1184
		1185	int
		1186	save (SV *coro, int new_save = -1)
		1187	CODE:
		1188	RETVAL = api_save (coro, new_save);
		1189	OUTPUT:
		1190	RETVAL
		1191
965	void	1192	void
966	transfer(prev, next, flags)	1193	_set_stacklevel (...)
967	SV *prev	1194	ALIAS:
968	SV *next	1195	Coro::State::transfer = 1
969	int flags	1196	Coro::schedule = 2
970	PROTOTYPE: @	1197	Coro::cede = 3
		1198	Coro::cede_notself = 4
971	CODE:	1199	CODE:
972	PUTBACK;	1200	{
973	SV_CORO (next, "Coro::transfer");	1201	struct transfer_args ta;
974	SV_CORO (prev, "Coro::transfer");	1202
975	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1203	switch (ix)
976	SPAGAIN;	1204	{
		1205	case 0:
		1206	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1207	ta.next = 0;
		1208	break;
		1209
		1210	case 1:
		1211	if (items != 2)
		1212	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1213
		1214	prepare_transfer (&ta, ST (0), ST (1));
		1215	break;
		1216
		1217	case 2:
		1218	prepare_schedule (&ta);
		1219	break;
		1220
		1221	case 3:
		1222	prepare_cede (&ta);
		1223	break;
		1224
		1225	case 4:
		1226	if (!prepare_cede_notself (&ta))
		1227	XSRETURN_EMPTY;
		1228
		1229	break;
		1230	}
		1231
		1232	BARRIER;
		1233	TRANSFER (ta);
		1234
		1235	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1236	XSRETURN_YES;
		1237	}
		1238
		1239	bool
		1240	_destroy (SV *coro_sv)
		1241	CODE:
		1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
		1243	OUTPUT:
		1244	RETVAL
977		1245
978	void	1246	void
979	DESTROY(coro)
980	Coro::State coro
981	CODE:
982
983	if (coro->mainstack && coro->mainstack != main_mainstack)
984	{
985	struct coro temp;
986
987	PUTBACK;
988	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
989	LOAD(aTHX_ coro);
990	SPAGAIN;
991
992	destroy_stacks (aTHX);
993
994	LOAD((&temp)); /* this will get rid of defsv etc.. */
995	SPAGAIN;
996
997	coro->mainstack = 0;
998	}
999
1000	deallocate_stack (coro);
1001	SvREFCNT_dec (coro->args);
1002	Safefree (coro);
1003
1004	void
1005	_exit(code)	1247	_exit (code)
1006	int code	1248	int code
1007	PROTOTYPE: $	1249	PROTOTYPE: $
1008	CODE:	1250	CODE:
1009	_exit (code);	1251	_exit (code);
1010		1252
1011	MODULE = Coro::State PACKAGE = Coro::Cont	1253	int
		1254	cctx_count ()
		1255	CODE:
		1256	RETVAL = cctx_count;
		1257	OUTPUT:
		1258	RETVAL
1012		1259
1013	# this is slightly dirty (should expose a c-level api)	1260	int
1014		1261	cctx_idle ()
1015	void	1262	CODE:
1016	yield(...)	1263	RETVAL = cctx_idle;
1017	PROTOTYPE: @	1264	OUTPUT:
1018	CODE:	1265	RETVAL
1019	static SV *returnstk;
1020	SV *sv;
1021	AV *defav = GvAV (PL_defgv);
1022	struct coro prev, next;
1023
1024	if (!returnstk)
1025	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
1026
1027	/* set up @_ -- ugly */
1028	av_clear (defav);
1029	av_fill (defav, items - 1);
1030	while (items--)
1031	av_store (defav, items, SvREFCNT_inc (ST(items)));
1032
1033	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1034	sv = av_pop ((AV *)SvRV (returnstk));
1035	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
1036	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
1037	SvREFCNT_dec (sv);
1038
1039	transfer(aTHX_ prev, next, 0);
1040		1266
1041	MODULE = Coro::State PACKAGE = Coro	1267	MODULE = Coro::State PACKAGE = Coro
1042		1268
1043	# this is slightly dirty (should expose a c-level api)
1044
1045	BOOT:	1269	BOOT:
1046	{	1270	{
1047	int i;	1271	int i;
		1272
1048	HV *stash = gv_stashpv ("Coro", TRUE);	1273	coro_stash = gv_stashpv ("Coro", TRUE);
1049		1274
1050	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1275	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1051	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1276	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1052	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1277	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1053	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1278	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1054	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1279	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1055	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1280	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1056		1281
1057	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1282	coro_current = get_sv ("Coro::current", FALSE);
1058	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1283	SvREADONLY_on (coro_current);
1059		1284
1060	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1285	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1061	coro_ready[i] = newAV ();	1286	coro_ready[i] = newAV ();
1062		1287
1063	{	1288	{
1064	SV *sv = perl_get_sv("Coro::API", 1);	1289	SV *sv = perl_get_sv("Coro::API", 1);
1065		1290
1066	coroapi.schedule = api_schedule;	1291	coroapi.schedule = api_schedule;
		1292	coroapi.save = api_save;
1067	coroapi.cede = api_cede;	1293	coroapi.cede = api_cede;
		1294	coroapi.cede_notself = api_cede_notself;
1068	coroapi.ready = api_ready;	1295	coroapi.ready = api_ready;
		1296	coroapi.is_ready = api_is_ready;
1069	coroapi.nready = &coro_nready;	1297	coroapi.nready = &coro_nready;
1070	coroapi.current = coro_current;	1298	coroapi.current = coro_current;
1071		1299
1072	GCoroAPI = &coroapi;	1300	GCoroAPI = &coroapi;
1073	sv_setiv(sv, (IV)&coroapi);	1301	sv_setiv (sv, (IV)&coroapi);
1074	SvREADONLY_on(sv);	1302	SvREADONLY_on (sv);
1075	}	1303	}
1076	}	1304	}
1077		1305
1078	#if !PERL_MICRO
1079
1080	void	1306	void
1081	ready(self)	1307	_set_current (SV *current)
1082	SV * self
1083	PROTOTYPE: $	1308	PROTOTYPE: $
1084	CODE:	1309	CODE:
1085	api_ready (self);	1310	SvREFCNT_dec (SvRV (coro_current));
1086		1311	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1087	#endif
1088		1312
1089	int	1313	int
		1314	prio (Coro::State coro, int newprio = 0)
		1315	ALIAS:
		1316	nice = 1
		1317	CODE:
		1318	{
		1319	RETVAL = coro->prio;
		1320
		1321	if (items > 1)
		1322	{
		1323	if (ix)
		1324	newprio = coro->prio - newprio;
		1325
		1326	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1327	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1328
		1329	coro->prio = newprio;
		1330	}
		1331	}
		1332	OUTPUT:
		1333	RETVAL
		1334
		1335	SV *
		1336	ready (SV *self)
		1337	PROTOTYPE: $
		1338	CODE:
		1339	RETVAL = boolSV (api_ready (self));
		1340	OUTPUT:
		1341	RETVAL
		1342
		1343	SV *
		1344	is_ready (SV *self)
		1345	PROTOTYPE: $
		1346	CODE:
		1347	RETVAL = boolSV (api_is_ready (self));
		1348	OUTPUT:
		1349	RETVAL
		1350
		1351	int
1090	nready(...)	1352	nready (...)
1091	PROTOTYPE:	1353	PROTOTYPE:
1092	CODE:	1354	CODE:
1093	RETVAL = coro_nready;	1355	RETVAL = coro_nready;
1094	OUTPUT:	1356	OUTPUT:
1095	RETVAL	1357	RETVAL
1096		1358
		1359	MODULE = Coro::State PACKAGE = Coro::AIO
		1360
		1361	SV *
		1362	_get_state ()
		1363	CODE:
		1364	{
		1365	struct io_state *data;
		1366
		1367	RETVAL = newSV (sizeof (struct io_state));
		1368	data = (struct io_state *)SvPVX (RETVAL);
		1369	SvCUR_set (RETVAL, sizeof (struct io_state));
		1370	SvPOK_only (RETVAL);
		1371
		1372	data->errorno = errno;
		1373	data->laststype = PL_laststype;
		1374	data->laststatval = PL_laststatval;
		1375	data->statcache = PL_statcache;
		1376	}
		1377	OUTPUT:
		1378	RETVAL
		1379
1097	void	1380	void
1098	schedule(...)	1381	_set_state (char *data_)
1099	PROTOTYPE:	1382	PROTOTYPE: $
1100	CODE:	1383	CODE:
1101	api_schedule ();	1384	{
		1385	struct io_state data = (void )data_;
1102		1386
1103	void	1387	errno = data->errorno;
1104	cede(...)	1388	PL_laststype = data->laststype;
1105	PROTOTYPE:	1389	PL_laststatval = data->laststatval;
1106	CODE:	1390	PL_statcache = data->statcache;
1107	api_cede ();	1391	}
1108		1392

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Comparing Coro/Coro/State.xs (file contents): Revision 1.54 by pcg, Sat Mar 13 06:45:04 2004 UTC vs. Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.54 by pcg, Sat Mar 13 06:45:04 2004 UTC vs.
Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC