[ViewVC] Diff of: 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 1.134 by root, Thu Jan 4 23:49:27 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 "libcoro/coro.c"	7	#include "patchlevel.h"
6		8
7	#include <signal.h>	9	#include <stdio.h>
		10	#include <errno.h>
		11	#include <assert.h>
8		12
9	#ifdef HAVE_MMAP	13	#ifdef HAVE_MMAP
10	# include <unistd.h>	14	# include <unistd.h>
11	# include <sys/mman.h>	15	# include <sys/mman.h>
12	# ifndef MAP_ANONYMOUS	16	# ifndef MAP_ANONYMOUS
14	# define MAP_ANONYMOUS MAP_ANON	18	# define MAP_ANONYMOUS MAP_ANON
15	# else	19	# else
16	# undef HAVE_MMAP	20	# undef HAVE_MMAP
17	# endif	21	# endif
18	# 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
19	#endif	30	# endif
		31	#else
		32	# define PAGESIZE 0
		33	# define BOOT_PAGESIZE (void)0
		34	#endif
20		35
21	#define MAY_FLUSH /* increases codesize and is rarely used */	36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
22		39
23	#define SUB_INIT "Coro::State::initialize"	40	/* the maximum number of idle cctx that will be pooled */
24	#define UCORO_STATE "_coro_state"	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)
		50	# ifndef PL_ppaddr
		51	# define PL_ppaddr ppaddr
		52	# endif
		53	# ifndef call_sv
		54	# define call_sv perl_call_sv
		55	# endif
		56	# ifndef get_sv
		57	# define get_sv perl_get_sv
		58	# endif
		59	# ifndef get_cv
		60	# define get_cv perl_get_cv
		61	# endif
		62	# ifndef IS_PADGV
		63	# define IS_PADGV(v) 0
		64	# endif
		65	# ifndef IS_PADCONST
		66	# define IS_PADCONST(v) 0
		67	# endif
		68	#endif
		69
		70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
		74
		75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		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
25		87
26	/* 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
27	* 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
28	* and should be unique. */	90	* and should be unique. */
		91	#define dSTACKLEVEL int stacklevel
29	#define dSTACKLEVEL void *stacklevel = &stacklevel	92	#define STACKLEVEL ((void *)&stacklevel)
30		93
31	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
32		95
33	#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))
34		105
35	#include "CoroAPI.h"	106	#include "CoroAPI.h"
36		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	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
37	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
		126	static AV main_mainstack; / used to differentiate between $main and others */
		127	static HV coro_state_stash, coro_stash;
		128	static SV coro_mortal; / will be freed after next transfer */
38		129
39	/* this is actually not only the c stack but also c registers etc... */	130	static struct coro_cctx *cctx_first;
		131	static int cctx_count, cctx_idle;
		132
		133	/* this is a structure representing a c-level coroutine */
40	typedef struct {	134	typedef struct coro_cctx {
41	int refcnt; /* pointer reference counter */	135	struct coro_cctx *next;
42	int usecnt; /* shared by how many coroutines */
43	int gencnt; /* generation counter */
44		136
45	coro_context cctx;	137	/* the stack */
46
47	void *sptr;	138	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;
50		140
		141	/* cpu state */
		142	void idle_sp; / sp of top-level transfer/schedule/cede call */
		143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		144	JMPENV *top_env;
		145	coro_context cctx;
		146
		147	int inuse;
		148
		149	#if USE_VALGRIND
		150	int valgrind_id;
		151	#endif
		152	} coro_cctx;
		153
		154	enum {
		155	CF_RUNNING = 0x0001, /* coroutine is running */
		156	CF_READY = 0x0002, /* coroutine is ready */
		157	CF_NEW = 0x0004, /* has never been switched to */
		158	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		159	};
		160
		161	/* this is a structure representing a perl-level coroutine */
51	struct coro {	162	struct coro {
52	/* the optional C context */	163	/* the c coroutine allocated to this perl coroutine, if any */
53	coro_stack *stack;	164	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		165
94	/* data associated with this coroutine (initial args) */	166	/* data associated with this coroutine (initial args) */
95	AV *args;	167	AV *args;
		168	int refcnt;
		169	int save; /* CORO_SAVE flags */
		170	int flags; /* CF_ flags */
		171
		172	/* optionally saved, might be zero */
		173	AV defav; / @_ */
		174	SV defsv; / $_ */
		175	SV errsv; / $@ */
		176	SV irssv; / $/ */
		177	SV irssv_sv; / real $/ cache */
		178
		179	#define VAR(name,type) type name;
		180	# include "state.h"
		181	#undef VAR
		182
		183	/* coro process data */
		184	int prio;
96	};	185	};
97		186
98	typedef struct coro *Coro__State;	187	typedef struct coro *Coro__State;
99	typedef struct coro *Coro__State_or_hashref;	188	typedef struct coro *Coro__State_or_hashref;
100		189
101	static AV main_mainstack; / used to differentiate between $main and others */	190	static AV *
102	static HV *coro_state_stash;	191	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	{	192	{
112	AV *av;	193	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;	194	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		195
131	newpadlist = newAV ();	196	newpadlist = newAV ();
132	AvREAL_off (newpadlist);	197	AvREAL_off (newpadlist);
133	av_store (newpadlist, 0, (SV *) newpad_name);	198	#if PERL_VERSION_ATLEAST (5,9,0)
		199	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		200	#else
		201	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		202	#endif
		203	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
		204	--AvFILLp (padlist);
		205
		206	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
134	av_store (newpadlist, 1, (SV *) newpad);	207	av_store (newpadlist, 1, (SV *)newpad);
135		208
136	av = newAV (); /* will be @_ */	209	return newpadlist;
137	av_extend (av, 0);	210	}
138	av_store (newpad, 0, (SV *) av);
139	AvFLAGS (av) = AVf_REIFY;
140		211
141	for (ix = fpad; ix > 0; ix--)	212	static void
		213	free_padlist (AV *padlist)
		214	{
		215	/* may be during global destruction */
		216	if (SvREFCNT (padlist))
142	{	217	{
143	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	218	I32 i = AvFILLp (padlist);
144	if (namesv && namesv != &PL_sv_undef)	219	while (i >= 0)
145	{	220	{
146	char name = SvPVX (namesv); / XXX */	221	SV **svp = av_fetch (padlist, i--, FALSE);
147	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	222	if (svp)
148	{ /* lexical from outside? */
149	npad[ix] = SvREFCNT_inc (ppad[ix]);
150	}	223	{
151	else
152	{ /* our own lexical */
153	SV *sv;	224	SV *sv;
154	if (*name == '&')	225	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
155	sv = SvREFCNT_inc (ppad[ix]);	226	SvREFCNT_dec (sv);
156	else if (*name == '@')	227
157	sv = (SV *) newAV ();	228	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	}	229	}
166	}	230	}
167	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
168	{
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	}
178		231
179	#if 0 /* return -ENOTUNDERSTOOD */
180	/* Now that vars are all in place, clone nested closures. */
181
182	for (ix = fpad; ix > 0; ix--) {
183	SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
184	if (namesv
185	&& namesv != &PL_sv_undef
186	&& !(SvFLAGS(namesv) & SVf_FAKE)
187	&& *SvPVX(namesv) == '&'
188	&& CvCLONE(ppad[ix]))
189	{
190	CV kid = cv_clone((CV)ppad[ix]);
191	SvREFCNT_dec(ppad[ix]);
192	CvCLONE_on(kid);
193	SvPADMY_on(kid);
194	npad[ix] = (SV*)kid;
195	}
196	}
197	#endif
198
199	return newpadlist;
200	}
201
202	#ifdef MAY_FLUSH
203	STATIC void
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
218	SvREFCNT_dec((SV*)padlist);	232	SvREFCNT_dec ((SV*)padlist);
219	}	233	}
220	}	234	}
221	#endif	235
		236	static int
		237	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		238	{
		239	AV *padlist;
		240	AV av = (AV )mg->mg_obj;
		241
		242	/* casting is fun. */
		243	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		244	free_padlist (padlist);
		245
		246	SvREFCNT_dec (av);
		247
		248	return 0;
		249	}
		250
		251	#define PERL_MAGIC_coro PERL_MAGIC_ext
		252
		253	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
		254
		255	#define CORO_MAGIC(cv) \
		256	SvMAGIC (cv) \
		257	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		258	? SvMAGIC (cv) \
		259	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		260	: 0
222		261
223	/* the next two functions merely cache the padlists */	262	/* the next two functions merely cache the padlists */
224	STATIC void	263	static void
225	get_padlist (CV *cv)	264	get_padlist (CV *cv)
226	{	265	{
227	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	266	MAGIC *mg = CORO_MAGIC (cv);
		267	AV *av;
228		268
229	if (he && AvFILLp ((AV )he) >= 0)	269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	271	else
		272	{
		273	#if PREFER_PERL_FUNCTIONS
		274	/* this is probably cleaner, but also slower? */
		275	CV *cp = Perl_cv_clone (cv);
		276	CvPADLIST (cv) = CvPADLIST (cp);
		277	CvPADLIST (cp) = 0;
		278	SvREFCNT_dec (cp);
		279	#else
232	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	280	CvPADLIST (cv) = coro_clone_padlist (cv);
		281	#endif
		282	}
233	}	283	}
234		284
235	STATIC void	285	static void
236	put_padlist (CV *cv)	286	put_padlist (CV *cv)
237	{	287	{
238	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	288	MAGIC *mg = CORO_MAGIC (cv);
		289	AV *av;
239		290
240	if (SvTYPE (*he) != SVt_PVAV)	291	if (!mg)
241	{
242	SvREFCNT_dec (*he);
243	he = (SV )newAV ();
244	}	292	{
245		293	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
246	av_push ((AV )he, (SV *)CvPADLIST (cv));	294	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
247	}	295	mg->mg_virtual = &vtbl_coro;
248		296	mg->mg_obj = (SV *)newAV ();
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	{	297	}
258	HE *he;
259	AV *padlist;
260		298
261	while (!!(he = hv_iternext (hv)))	299	av = (AV *)mg->mg_obj;
262	{
263	AV av = (AV )HeVAL(he);
264		300
265	/* casting is fun. */	301	if (AvFILLp (av) >= AvMAX (av))
266	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	302	av_extend (av, AvMAX (av) + 1);
267	free_padlist (padlist);
268	}
269	}
270		303
271	SvREFCNT_dec (hv);	304	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
272	}	305	}
273	#endif
274		306
275	#define SB do {	307	#define SB do {
276	#define SE } while (0)	308	#define SE } while (0)
277		309
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	310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
282		311
283	static void	312	static void
284	load_state(pTHX_ Coro__State c)	313	load_perl (Coro__State c)
285	{	314	{
286	PL_dowarn = c->dowarn;	315	#define VAR(name,type) PL_ ## name = c->name;
287	PL_in_eval = c->in_eval;	316	# include "state.h"
288		317	#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		318
316	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
317	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
318	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	321	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		322	if (c->irssv)
		323	{
		324	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		325	SvREFCNT_dec (c->irssv);
		326	else
		327	{
		328	REPLACE_SV (PL_rs, c->irssv);
		329	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		330	sv_setsv (c->irssv_sv, PL_rs);
		331	}
		332	}
319		333
320	{	334	{
321	dSP;	335	dSP;
322	CV *cv;	336	CV *cv;
323		337
324	/* now do the ugly restore mess */	338	/* now do the ugly restore mess */
325	while ((cv = (CV *)POPs))	339	while ((cv = (CV *)POPs))
326	{	340	{
327	AV padlist = (AV )POPs;
328
329	if (padlist)
330	{
331	put_padlist (cv); /* mark this padlist as available */	341	put_padlist (cv); /* mark this padlist as available */
332	CvPADLIST(cv) = padlist;	342	CvDEPTH (cv) = PTR2IV (POPs);
333	#ifdef USE_THREADS	343	CvPADLIST (cv) = (AV *)POPs;
334	/CvOWNER(cv) = (struct perl_thread )POPs;*/
335	#endif
336	}
337
338	++CvDEPTH(cv);
339	}	344	}
340		345
341	PUTBACK;	346	PUTBACK;
342	}	347	}
343	}	348	}
344		349
345	static void	350	static void
346	save_state(pTHX_ Coro__State c, int flags)	351	save_perl (Coro__State c)
347	{	352	{
348	{	353	{
349	dSP;	354	dSP;
350	I32 cxix = cxstack_ix;	355	I32 cxix = cxstack_ix;
351	PERL_CONTEXT *ccstk = cxstack;	356	PERL_CONTEXT *ccstk = cxstack;
…		…
354	/*	359	/*
355	* the worst thing you can imagine happens first - we have to save	360	* the worst thing you can imagine happens first - we have to save
356	* (and reinitialize) all cv's in the whole callchain :(	361	* (and reinitialize) all cv's in the whole callchain :(
357	*/	362	*/
358		363
		364	EXTEND (SP, 3 + 1);
359	PUSHs (Nullsv);	365	PUSHs (Nullsv);
360	/* this loop was inspired by pp_caller */	366	/* this loop was inspired by pp_caller */
361	for (;;)	367	for (;;)
362	{	368	{
363	while (cxix >= 0)	369	while (cxix >= 0)
364	{	370	{
365	PERL_CONTEXT *cx = &ccstk[cxix--];	371	PERL_CONTEXT *cx = &ccstk[cxix--];
366		372
367	if (CxTYPE(cx) == CXt_SUB)	373	if (CxTYPE (cx) == CXt_SUB)
368	{	374	{
369	CV *cv = cx->blk_sub.cv;	375	CV *cv = cx->blk_sub.cv;
		376
370	if (CvDEPTH(cv))	377	if (CvDEPTH (cv))
371	{	378	{
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);	379	EXTEND (SP, 3);
378
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));	380	PUSHs ((SV *)CvPADLIST (cv));
		381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
387	PUSHs ((SV *)cv);	382	PUSHs ((SV *)cv);
388		383
		384	CvDEPTH (cv) = 0;
389	get_padlist (cv); /* this is a monster */	385	get_padlist (cv);
390	}	386	}
391	}
392	else if (CxTYPE(cx) == CXt_FORMAT)
393	{
394	/* I never used formats, so how should I know how these are implemented? */
395	/* my bold guess is as a simple, plain sub... */
396	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
397	}	387	}
398	}	388	}
399		389
400	if (top_si->si_type == PERLSI_MAIN)	390	if (top_si->si_type == PERLSI_MAIN)
401	break;	391	break;
…		…
406	}	396	}
407		397
408	PUTBACK;	398	PUTBACK;
409	}	399	}
410		400
411	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	401	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;	402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
413	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	403	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		404	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
414		405
415	c->dowarn = PL_dowarn;	406	#define VAR(name,type)c->name = PL_ ## name;
416	c->in_eval = PL_in_eval;	407	# include "state.h"
417		408	#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	}	409	}
445		410
446	/*	411	/*
447	* allocate various perl stacks. This is an exact copy	412	* allocate various perl stacks. This is an exact copy
448	* of perl.c:init_stacks, except that it uses less memory	413	* of perl.c:init_stacks, except that it uses less memory
449	* on the assumption that coroutines do not usually need	414	* on the (sometimes correct) assumption that coroutines do
450	* a lot of stackspace.	415	* not usually need a lot of stackspace.
451	*/	416	*/
452	STATIC void	417	#if PREFER_PERL_FUNCTIONS
		418	# define coro_init_stacks init_stacks
		419	#else
		420	static void
453	coro_init_stacks (pTHX)	421	coro_init_stacks ()
454	{	422	{
455	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
456	PL_curstackinfo->si_type = PERLSI_MAIN;	424	PL_curstackinfo->si_type = PERLSI_MAIN;
457	PL_curstack = PL_curstackinfo->si_stack;	425	PL_curstack = PL_curstackinfo->si_stack;
458	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459		427
460	PL_stack_base = AvARRAY(PL_curstack);	428	PL_stack_base = AvARRAY(PL_curstack);
461	PL_stack_sp = PL_stack_base;	429	PL_stack_sp = PL_stack_base;
462	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463		431
464	New(50,PL_tmps_stack,96,SV*);	432	New(50,PL_tmps_stack,128,SV*);
465	PL_tmps_floor = -1;	433	PL_tmps_floor = -1;
466	PL_tmps_ix = -1;	434	PL_tmps_ix = -1;
467	PL_tmps_max = 96;	435	PL_tmps_max = 128;
468		436
469	New(54,PL_markstack,16,I32);	437	New(54,PL_markstack,32,I32);
470	PL_markstack_ptr = PL_markstack;	438	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	439	PL_markstack_max = PL_markstack + 32;
472		440
		441	#ifdef SET_MARK_OFFSET
473	SET_MARK_OFFSET;	442	SET_MARK_OFFSET;
		443	#endif
474		444
475	New(54,PL_scopestack,16,I32);	445	New(54,PL_scopestack,32,I32);
476	PL_scopestack_ix = 0;	446	PL_scopestack_ix = 0;
477	PL_scopestack_max = 16;	447	PL_scopestack_max = 32;
478		448
479	New(54,PL_savestack,96,ANY);	449	New(54,PL_savestack,64,ANY);
480	PL_savestack_ix = 0;	450	PL_savestack_ix = 0;
481	PL_savestack_max = 96;	451	PL_savestack_max = 64;
482		452
		453	#if !PERL_VERSION_ATLEAST (5,9,0)
483	New(54,PL_retstack,8,OP*);	454	New(54,PL_retstack,16,OP*);
484	PL_retstack_ix = 0;	455	PL_retstack_ix = 0;
485	PL_retstack_max = 8;	456	PL_retstack_max = 16;
		457	#endif
486	}	458	}
		459	#endif
487		460
488	/*	461	/*
489	* destroy the stacks, the callchain etc...	462	* destroy the stacks, the callchain etc...
490	* still there is a memleak of 128 bytes...
491	*/	463	*/
492	STATIC void	464	static void
493	destroy_stacks(pTHX)	465	coro_destroy_stacks ()
494	{	466	{
495	if (!IN_DESTRUCT)	467	if (!IN_DESTRUCT)
496	{	468	{
497	/* is this ugly, I ask? */	469	/* restore all saved variables and stuff */
498	while (PL_scopestack_ix)	470	LEAVE_SCOPE (0);
499	LEAVE;	471	assert (PL_tmps_floor == -1);
500		472
501	/* sure it is, but more important: is it correct?? :/ */	473	/* free all temporaries */
502	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
503	FREETMPS;	474	FREETMPS;
		475	assert (PL_tmps_ix == -1);
		476
		477	/* unwind all extra stacks */
		478	POPSTACK_TO (PL_mainstack);
		479
		480	/* unwind main stack */
		481	dounwind (-1);
504	}	482	}
505		483
506	while (PL_curstackinfo->si_next)	484	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	485	PL_curstackinfo = PL_curstackinfo->si_next;
508		486
509	while (PL_curstackinfo)	487	while (PL_curstackinfo)
510	{	488	{
511	PERL_SI *p = PL_curstackinfo->si_prev;	489	PERL_SI *p = PL_curstackinfo->si_prev;
512		490
513	{
514	dSP;
515	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516	PUTBACK; /* possibly superfluous */
517	}
518
519	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
520	{
521	dounwind(-1);
522	SvREFCNT_dec(PL_curstackinfo->si_stack);	492	SvREFCNT_dec (PL_curstackinfo->si_stack);
523	}
524		493
525	Safefree(PL_curstackinfo->si_cxstack);	494	Safefree (PL_curstackinfo->si_cxstack);
526	Safefree(PL_curstackinfo);	495	Safefree (PL_curstackinfo);
527	PL_curstackinfo = p;	496	PL_curstackinfo = p;
528	}	497	}
529		498
530	Safefree(PL_tmps_stack);	499	Safefree (PL_tmps_stack);
531	Safefree(PL_markstack);	500	Safefree (PL_markstack);
532	Safefree(PL_scopestack);	501	Safefree (PL_scopestack);
533	Safefree(PL_savestack);	502	Safefree (PL_savestack);
		503	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree(PL_retstack);	504	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	505	#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	}	506	}
565		507
566	static void	508	static void
567	deallocate_stack (Coro__State ctx)	509	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	{	510	{
594	/*	511	/*
595	* emulate part of the perl startup here.	512	* emulate part of the perl startup here.
596	*/	513	*/
		514
		515	coro_init_stacks ();
		516
		517	PL_curcop = &PL_compiling;
		518	PL_in_eval = EVAL_NULL;
		519	PL_curpm = 0;
		520	PL_localizing = 0;
		521	PL_dirty = 0;
		522	PL_restartop = 0;
		523
		524	{
		525	dSP;
		526	LOGOP myop;
		527
		528	SvREFCNT_dec (GvAV (PL_defgv));
		529	GvAV (PL_defgv) = coro->args; coro->args = 0;
		530
		531	Zero (&myop, 1, LOGOP);
		532	myop.op_next = Nullop;
		533	myop.op_flags = OPf_WANT_VOID;
		534
		535	PUSHMARK (SP);
		536	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		537	PUTBACK;
		538	PL_op = (OP *)&myop;
		539	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		540	SPAGAIN;
		541	}
		542
		543	ENTER; /* necessary e.g. for dounwind */
		544	}
		545
		546	static void
		547	free_coro_mortal ()
		548	{
		549	if (coro_mortal)
		550	{
		551	SvREFCNT_dec (coro_mortal);
		552	coro_mortal = 0;
		553	}
		554	}
		555
		556	/* inject a fake call to Coro::State::_cctx_init into the execution */
		557	static void NOINLINE
		558	prepare_cctx (coro_cctx *cctx)
		559	{
597	dSP;	560	dSP;
598	Coro__State ctx = (Coro__State)arg;	561	LOGOP myop;
599	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);
600		562
601	coro_init_stacks (aTHX);	563	Zero (&myop, 1, LOGOP);
602	/PL_curcop = 0;/	564	myop.op_next = PL_op;
603	/PL_in_eval = PL_in_eval;/ /* inherit */	565	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
604	SvREFCNT_dec (GvAV (PL_defgv));
605	GvAV (PL_defgv) = ctx->args;
606		566
		567	PUSHMARK (SP);
		568	EXTEND (SP, 2);
		569	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		570	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		571	PUTBACK;
		572	PL_op = (OP *)&myop;
		573	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
607	SPAGAIN;	574	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	}	575	}
648		576
649	static void	577	static void
650	continue_coro (void *arg)	578	coro_run (void *arg)
651	{	579	{
		580	/* coro_run is the alternative tail of transfer(), so unlock here. */
		581	UNLOCK;
		582
652	/*	583	/*
653	* this is a _very_ stripped down perl interpreter ;)	584	* this is a _very_ stripped down perl interpreter ;)
654	*/	585	*/
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;	586	PL_top_env = &PL_start_env;
663		587
664	ctx->cursp = 0;	588	/* inject call to cctx_init */
665	PL_op = PL_op->op_next;	589	prepare_cctx ((coro_cctx *)arg);
666	CALLRUNOPS(aTHX);
667		590
		591	/* somebody will hit me for both perl_run and PL_restartop */
		592	PL_restartop = PL_op;
		593	perl_run (PL_curinterp);
		594
		595	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
668	abort ();	596	abort ();
669	}	597	}
670		598
671	STATIC void	599	static coro_cctx *
		600	cctx_new ()
		601	{
		602	coro_cctx *cctx;
		603
		604	++cctx_count;
		605
		606	Newz (0, cctx, 1, coro_cctx);
		607
		608	#if HAVE_MMAP
		609
		610	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		611	/* mmap supposedly does allocate-on-write for us */
		612	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		613
		614	if (cctx->sptr == (void *)-1)
		615	{
		616	perror ("FATAL: unable to mmap stack for coroutine");
		617	_exit (EXIT_FAILURE);
		618	}
		619
		620	# if STACKGUARD
		621	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		622	# endif
		623
		624	#else
		625
		626	cctx->ssize = STACKSIZE * (long)sizeof (long);
		627	New (0, cctx->sptr, STACKSIZE, long);
		628
		629	if (!cctx->sptr)
		630	{
		631	perror ("FATAL: unable to malloc stack for coroutine");
		632	_exit (EXIT_FAILURE);
		633	}
		634
		635	#endif
		636
		637	#if USE_VALGRIND
		638	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		639	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		640	cctx->ssize + (char *)cctx->sptr
		641	);
		642	#endif
		643
		644	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		645
		646	return cctx;
		647	}
		648
		649	static void
		650	cctx_destroy (coro_cctx *cctx)
		651	{
		652	if (!cctx)
		653	return;
		654
		655	--cctx_count;
		656
		657	#if USE_VALGRIND
		658	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		659	#endif
		660
		661	#if HAVE_MMAP
		662	munmap (cctx->sptr, cctx->ssize);
		663	#else
		664	Safefree (cctx->sptr);
		665	#endif
		666
		667	Safefree (cctx);
		668	}
		669
		670	static coro_cctx *
		671	cctx_get ()
		672	{
		673	coro_cctx *cctx;
		674
		675	if (cctx_first)
		676	{
		677	cctx = cctx_first;
		678	cctx_first = cctx->next;
		679	--cctx_idle;
		680	}
		681	else
		682	{
		683	cctx = cctx_new ();
		684	PL_op = PL_op->op_next;
		685	}
		686
		687	return cctx;
		688	}
		689
		690	static void
		691	cctx_put (coro_cctx *cctx)
		692	{
		693	/* free another cctx if overlimit */
		694	if (cctx_idle >= MAX_IDLE_CCTX)
		695	{
		696	coro_cctx *first = cctx_first;
		697	cctx_first = first->next;
		698	--cctx_idle;
		699
		700	assert (!first->inuse);
		701	cctx_destroy (first);
		702	}
		703
		704	++cctx_idle;
		705	cctx->next = cctx_first;
		706	cctx_first = cctx;
		707	}
		708
		709	/* never call directly, always through the coro_state_transfer global variable */
		710	static void NOINLINE
672	transfer(pTHX_ struct coro prev, struct coro next, int flags)	711	transfer (struct coro prev, struct coro next)
673	{	712	{
674	dSTACKLEVEL;	713	dSTACKLEVEL;
675	static struct coro *xnext;
676		714
		715	/* sometimes transfer is only called to set idle_sp */
		716	if (!next)
		717	{
		718	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		719	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		720	}
677	if (prev != next)	721	else if (prev != next)
678	{	722	{
679	xnext = next;	723	coro_cctx *prev__cctx;
680		724
681	if (next->mainstack)	725	if (prev->flags & CF_NEW)
682	{	726	{
683	SAVE (prev, flags);	727	/* create a new empty context */
684	LOAD (next);	728	Newz (0, prev->cctx, 1, coro_cctx);
685		729	prev->cctx->inuse = 1;
686	/* mark this state as in-use */	730	prev->flags &= ~CF_NEW;
687	next->mainstack = 0;	731	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	}	732	}
717	else if (next->tmps_ix == -2)	733
718	croak ("tried to transfer to running coroutine");	734	/TODO: must not croak here /
		735	if (!prev->flags & CF_RUNNING)
		736	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		737
		738	if (next->flags & CF_RUNNING)
		739	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		740
		741	if (next->flags & CF_DESTROYED)
		742	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		743
		744	prev->flags &= ~CF_RUNNING;
		745	next->flags \|= CF_RUNNING;
		746
		747	LOCK;
		748
		749	if (next->flags & CF_NEW)
		750	{
		751	/* need to start coroutine */
		752	next->flags &= ~CF_NEW;
		753	/* first get rid of the old state */
		754	save_perl (prev);
		755	/* setup coroutine call */
		756	setup_coro (next);
		757	/* need a new stack */
		758	assert (!next->cctx);
		759	}
719	else	760	else
720	{	761	{
721	SAVE (prev, -1); /* first get rid of the old state */	762	/* coroutine already started */
722		763	save_perl (prev);
723	if (flags & TRANSFER_SAVE_CCTXT)	764	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	}	765	}
750		766
751	/*	767	prev__cctx = prev->cctx;
752	* xnext is now either prev or next, depending on wether	768
753	* we switched the c stack or not. that's why I use a global	769	/* possibly "free" the cctx */
754	* variable, that should become thread-specific at one point.	770	if (prev__cctx->idle_sp == STACKLEVEL)
755	*/	771	{
756	xnext->cursp = stacklevel;	772	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
757	}	773	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
758		774
759	if (coro_mortal)	775	prev->cctx = 0;
		776
		777	cctx_put (prev__cctx);
		778	prev__cctx->inuse = 0;
		779	}
		780
		781	if (!next->cctx)
		782	{
		783	next->cctx = cctx_get ();
		784	assert (!next->cctx->inuse);
		785	next->cctx->inuse = 1;
		786	}
		787
		788	if (prev__cctx != next->cctx)
		789	{
		790	prev__cctx->top_env = PL_top_env;
		791	PL_top_env = next->cctx->top_env;
		792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		793	}
		794
		795	free_coro_mortal ();
		796	UNLOCK;
760	{	797	}
761	SvREFCNT_dec (coro_mortal);	798	}
762	coro_mortal = 0;	799
		800	struct transfer_args
		801	{
		802	struct coro prev, next;
		803	};
		804
		805	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
		806
		807	static int
		808	coro_state_destroy (struct coro *coro)
		809	{
		810	if (coro->flags & CF_DESTROYED)
		811	return 0;
		812
		813	coro->flags \|= CF_DESTROYED;
		814
		815	if (coro->mainstack && coro->mainstack != main_mainstack)
763	}	816	{
764	}	817	assert (!(coro->flags & CF_RUNNING));
765		818
766	#define SV_CORO(sv,func) \	819	struct coro temp;
767	do { \	820	Zero (&temp, 1, struct coro);
768	if (SvROK (sv)) \	821	temp.save = CORO_SAVE_ALL;
769	sv = SvRV (sv); \
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		822
787	#define SvSTATE(sv) (struct coro *)SvIV (sv)	823	if (coro->flags & CF_RUNNING)
		824	croak ("FATAL: tried to destroy currently running coroutine");
788		825
		826	save_perl (&temp);
		827	load_perl (coro);
		828
		829	coro_destroy_stacks ();
		830
		831	load_perl (&temp); /* this will get rid of defsv etc.. */
		832
		833	coro->mainstack = 0;
		834	}
		835
		836	cctx_destroy (coro->cctx);
		837	SvREFCNT_dec (coro->args);
		838
		839	return 1;
		840	}
		841
789	static void	842	static int
		843	coro_state_free (pTHX_ SV sv, MAGIC mg)
		844	{
		845	struct coro coro = (struct coro )mg->mg_ptr;
		846	mg->mg_ptr = 0;
		847
		848	if (--coro->refcnt < 0)
		849	{
		850	coro_state_destroy (coro);
		851	Safefree (coro);
		852	}
		853
		854	return 0;
		855	}
		856
		857	static int
		858	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		859	{
		860	struct coro coro = (struct coro )mg->mg_ptr;
		861
		862	++coro->refcnt;
		863
		864	return 0;
		865	}
		866
		867	static MGVTBL coro_state_vtbl = {
		868	0, 0, 0, 0,
		869	coro_state_free,
		870	0,
		871	#ifdef MGf_DUP
		872	coro_state_dup,
		873	#else
		874	# define MGf_DUP 0
		875	#endif
		876	};
		877
		878	static struct coro *
		879	SvSTATE (SV *coro)
		880	{
		881	HV *stash;
		882	MAGIC *mg;
		883
		884	if (SvROK (coro))
		885	coro = SvRV (coro);
		886
		887	stash = SvSTASH (coro);
		888	if (stash != coro_stash && stash != coro_state_stash)
		889	{
		890	/* very slow, but rare, check */
		891	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		892	croak ("Coro::State object required");
		893	}
		894
		895	mg = SvMAGIC (coro);
		896	assert (mg->mg_type == PERL_MAGIC_ext);
		897	return (struct coro *)mg->mg_ptr;
		898	}
		899
		900	static void
		901	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		902	{
		903	ta->prev = SvSTATE (prev_sv);
		904	ta->next = SvSTATE (next_sv);
		905	}
		906
		907	static void
790	api_transfer(pTHX_ SV prev, SV next, int flags)	908	api_transfer (SV prev_sv, SV next_sv)
791	{	909	{
792	SV_CORO (prev, "Coro::transfer");	910	struct transfer_args ta;
793	SV_CORO (next, "Coro::transfer");
794		911
795	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	912	prepare_transfer (&ta, prev_sv, next_sv);
		913	TRANSFER (ta);
		914	}
		915
		916	static int
		917	api_save (SV *coro_sv, int new_save)
		918	{
		919	struct coro *coro = SvSTATE (coro_sv);
		920	int old_save = coro->save;
		921
		922	if (new_save >= 0)
		923	coro->save = new_save;
		924
		925	return old_save;
796	}	926	}
797		927
798	/ Coro ******************************************************************/	928	/ Coro ******************************************************************/
799		929
800	#define PRIO_MAX 3	930	#define PRIO_MAX 3
…		…
803	#define PRIO_LOW -1	933	#define PRIO_LOW -1
804	#define PRIO_IDLE -3	934	#define PRIO_IDLE -3
805	#define PRIO_MIN -4	935	#define PRIO_MIN -4
806		936
807	/* for Coro.pm */	937	/* for Coro.pm */
808	static GV coro_current, coro_idle;	938	static SV *coro_current;
809	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	939	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
810	static int coro_nready;	940	static int coro_nready;
811		941
812	static void	942	static void
813	coro_enq (SV *sv)	943	coro_enq (SV *coro_sv)
814	{	944	{
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);	945	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
825	coro_nready++;	946	coro_nready++;
826
827	return;
828	}
829
830	croak ("Coro::ready tried to enqueue something that is not a coroutine");
831	}	947	}
832		948
833	static SV *	949	static SV *
834	coro_deq (int min_prio)	950	coro_deq (int min_prio)
835	{	951	{
…		…
838	min_prio -= PRIO_MIN;	954	min_prio -= PRIO_MIN;
839	if (min_prio < 0)	955	if (min_prio < 0)
840	min_prio = 0;	956	min_prio = 0;
841		957
842	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	958	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
843	if (av_len (coro_ready[prio]) >= 0)	959	if (AvFILLp (coro_ready [prio]) >= 0)
844	{	960	{
845	coro_nready--;	961	coro_nready--;
846	return av_shift (coro_ready[prio]);	962	return av_shift (coro_ready [prio]);
847	}	963	}
848		964
849	return 0;	965	return 0;
850	}	966	}
851		967
852	static void	968	static int
853	api_ready (SV *coro)	969	api_ready (SV *coro_sv)
854	{	970	{
		971	struct coro *coro;
		972
855	if (SvROK (coro))	973	if (SvROK (coro_sv))
856	coro = SvRV (coro);	974	coro_sv = SvRV (coro_sv);
857		975
		976	coro = SvSTATE (coro_sv);
		977
		978	if (coro->flags & CF_READY)
		979	return 0;
		980
		981	coro->flags \|= CF_READY;
		982
		983	LOCK;
858	coro_enq (SvREFCNT_inc (coro));	984	coro_enq (SvREFCNT_inc (coro_sv));
		985	UNLOCK;
		986
		987	return 1;
		988	}
		989
		990	static int
		991	api_is_ready (SV *coro_sv)
		992	{
		993	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		994	}
		995
		996	static void
		997	prepare_schedule (struct transfer_args *ta)
		998	{
		999	SV prev_sv, next_sv;
		1000
		1001	for (;;)
		1002	{
		1003	LOCK;
		1004	next_sv = coro_deq (PRIO_MIN);
		1005	UNLOCK;
		1006
		1007	/* nothing to schedule: call the idle handler */
		1008	if (!next_sv)
		1009	{
		1010	dSP;
		1011
		1012	ENTER;
		1013	SAVETMPS;
		1014
		1015	PUSHMARK (SP);
		1016	PUTBACK;
		1017	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1018
		1019	FREETMPS;
		1020	LEAVE;
		1021	continue;
		1022	}
		1023
		1024	ta->next = SvSTATE (next_sv);
		1025
		1026	/* cannot transfer to destroyed coros, skip and look for next */
		1027	if (ta->next->flags & CF_DESTROYED)
		1028	{
		1029	SvREFCNT_dec (next_sv);
		1030	continue;
		1031	}
		1032
		1033	break;
		1034	}
		1035
		1036	/* free this only after the transfer */
		1037	prev_sv = SvRV (coro_current);
		1038	SvRV_set (coro_current, next_sv);
		1039	ta->prev = SvSTATE (prev_sv);
		1040
		1041	assert (ta->next->flags & CF_READY);
		1042	ta->next->flags &= ~CF_READY;
		1043
		1044	LOCK;
		1045	free_coro_mortal ();
		1046	coro_mortal = prev_sv;
		1047	UNLOCK;
		1048	}
		1049
		1050	static void
		1051	prepare_cede (struct transfer_args *ta)
		1052	{
		1053	api_ready (coro_current);
		1054	prepare_schedule (ta);
		1055	}
		1056
		1057	static int
		1058	prepare_cede_notself (struct transfer_args *ta)
		1059	{
		1060	if (coro_nready)
		1061	{
		1062	SV *prev = SvRV (coro_current);
		1063	prepare_schedule (ta);
		1064	api_ready (prev);
		1065	return 1;
		1066	}
		1067	else
		1068	return 0;
859	}	1069	}
860		1070
861	static void	1071	static void
862	api_schedule (void)	1072	api_schedule (void)
863	{	1073	{
864	SV prev, next;	1074	struct transfer_args ta;
865		1075
866	prev = SvRV (GvSV (coro_current));	1076	prepare_schedule (&ta);
867	next = coro_deq (PRIO_MIN);	1077	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	}	1078	}
883		1079
884	static void	1080	static int
885	api_cede (void)	1081	api_cede (void)
886	{	1082	{
887	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	1083	struct transfer_args ta;
888		1084
889	api_schedule ();	1085	prepare_cede (&ta);
		1086
		1087	if (ta.prev != ta.next)
		1088	{
		1089	TRANSFER (ta);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
		1094	}
		1095
		1096	static int
		1097	api_cede_notself (void)
		1098	{
		1099	struct transfer_args ta;
		1100
		1101	if (prepare_cede_notself (&ta))
		1102	{
		1103	TRANSFER (ta);
		1104	return 1;
		1105	}
		1106	else
		1107	return 0;
890	}	1108	}
891		1109
892	MODULE = Coro::State PACKAGE = Coro::State	1110	MODULE = Coro::State PACKAGE = Coro::State
893		1111
894	PROTOTYPES: ENABLE	1112	PROTOTYPES: DISABLE
895		1113
896	BOOT:	1114	BOOT:
897	{ /* {} necessary for stoopid perl-5.6.x */	1115	{
898	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	1116	#ifdef USE_ITHREADS
899	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	1117	MUTEX_INIT (&coro_mutex);
		1118	#endif
		1119	BOOT_PAGESIZE;
		1120
900	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1121	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
901		1122
902	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1123	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
903	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1124	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
904	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1125	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1126	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
905	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1127	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
906
907	if (!padlist_cache)
908	padlist_cache = newHV ();
909		1128
910	main_mainstack = PL_mainstack;	1129	main_mainstack = PL_mainstack;
911		1130
912	coroapi.ver = CORO_API_VERSION;	1131	coroapi.ver = CORO_API_VERSION;
913	coroapi.transfer = api_transfer;	1132	coroapi.transfer = api_transfer;
914	}
915		1133
916	Coro::State	1134	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
917	_newprocess(args)	1135	}
918	SV * args	1136
919	PROTOTYPE: $	1137	SV *
		1138	new (char *klass, ...)
920	CODE:	1139	CODE:
921	Coro__State coro;	1140	{
		1141	struct coro *coro;
		1142	HV *hv;
		1143	int i;
922		1144
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);	1145	Newz (0, coro, 1, struct coro);
		1146	coro->args = newAV ();
		1147	coro->save = CORO_SAVE_ALL;
		1148	coro->flags = CF_NEW;
927		1149
928	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1150	hv = newHV ();
929	coro->mainstack = 0; /* actual work is done inside transfer */	1151	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
930	coro->stack = 0;	1152	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
931		1153
932	RETVAL = coro;	1154	for (i = 1; i < items; i++)
		1155	av_push (coro->args, newSVsv (ST (i)));
		1156	}
933	OUTPUT:	1157	OUTPUT:
934	RETVAL	1158	RETVAL
935		1159
		1160	int
		1161	save (SV *coro, int new_save = -1)
		1162	CODE:
		1163	RETVAL = api_save (coro, new_save);
		1164	OUTPUT:
		1165	RETVAL
		1166
936	void	1167	void
937	transfer(prev, next, flags)	1168	_set_stacklevel (...)
938	SV *prev	1169	ALIAS:
939	SV *next	1170	Coro::State::transfer = 1
940	int flags	1171	Coro::schedule = 2
941	PROTOTYPE: @	1172	Coro::cede = 3
		1173	Coro::cede_notself = 4
942	CODE:	1174	CODE:
943	PUTBACK;	1175	{
944	SV_CORO (next, "Coro::transfer");	1176	struct transfer_args ta;
945	SV_CORO (prev, "Coro::transfer");	1177
946	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1178	switch (ix)
947	SPAGAIN;	1179	{
		1180	case 0:
		1181	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1182	ta.next = 0;
		1183	break;
		1184
		1185	case 1:
		1186	if (items != 2)
		1187	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1188
		1189	prepare_transfer (&ta, ST (0), ST (1));
		1190	break;
		1191
		1192	case 2:
		1193	prepare_schedule (&ta);
		1194	break;
		1195
		1196	case 3:
		1197	prepare_cede (&ta);
		1198	break;
		1199
		1200	case 4:
		1201	if (!prepare_cede_notself (&ta))
		1202	XSRETURN_EMPTY;
		1203
		1204	break;
		1205	}
		1206
		1207	BARRIER;
		1208	TRANSFER (ta);
		1209	}
		1210
		1211	bool
		1212	_destroy (SV *coro_sv)
		1213	CODE:
		1214	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
		1215	OUTPUT:
		1216	RETVAL
948		1217
949	void	1218	void
950	DESTROY(coro)
951	Coro::State coro
952	CODE:
953
954	if (coro->mainstack && coro->mainstack != main_mainstack)
955	{
956	struct coro temp;
957
958	PUTBACK;
959	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
960	LOAD(aTHX_ coro);
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
975	void
976	flush()
977	CODE:
978	#ifdef MAY_FLUSH
979	flush_padlist_cache ();
980	#endif
981
982	void
983	_exit(code)	1219	_exit (code)
984	int code	1220	int code
985	PROTOTYPE: $	1221	PROTOTYPE: $
986	CODE:	1222	CODE:
987	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
988	_exit (code);	1223	_exit (code);
989	#else
990	signal (SIGTERM, SIG_DFL);
991	raise (SIGTERM);
992	exit (code);
993	#endif
994		1224
995	MODULE = Coro::State PACKAGE = Coro::Cont	1225	int
		1226	cctx_count ()
		1227	CODE:
		1228	RETVAL = cctx_count;
		1229	OUTPUT:
		1230	RETVAL
996		1231
997	# this is slightly dirty (should expose a c-level api)	1232	int
998		1233	cctx_idle ()
999	void	1234	CODE:
1000	yield(...)	1235	RETVAL = cctx_idle;
1001	PROTOTYPE: @	1236	OUTPUT:
1002	CODE:	1237	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		1238
1025	MODULE = Coro::State PACKAGE = Coro	1239	MODULE = Coro::State PACKAGE = Coro
1026		1240
1027	# this is slightly dirty (should expose a c-level api)
1028
1029	BOOT:	1241	BOOT:
1030	{	1242	{
1031	int i;	1243	int i;
		1244
1032	HV *stash = gv_stashpv ("Coro", TRUE);	1245	coro_stash = gv_stashpv ("Coro", TRUE);
1033		1246
1034	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1247	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1035	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1248	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1036	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1249	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1037	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1250	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1038	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1251	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1039	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1252	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1040		1253
1041	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1254	coro_current = get_sv ("Coro::current", FALSE);
1042	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1255	SvREADONLY_on (coro_current);
1043		1256
1044	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1257	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1045	coro_ready[i] = newAV ();	1258	coro_ready[i] = newAV ();
1046		1259
1047	{	1260	{
1048	SV *sv = perl_get_sv("Coro::API", 1);	1261	SV *sv = perl_get_sv("Coro::API", 1);
1049		1262
1050	coroapi.schedule = api_schedule;	1263	coroapi.schedule = api_schedule;
		1264	coroapi.save = api_save;
1051	coroapi.cede = api_cede;	1265	coroapi.cede = api_cede;
		1266	coroapi.cede_notself = api_cede_notself;
1052	coroapi.ready = api_ready;	1267	coroapi.ready = api_ready;
		1268	coroapi.is_ready = api_is_ready;
1053	coroapi.nready = &coro_nready;	1269	coroapi.nready = &coro_nready;
1054	coroapi.current = coro_current;	1270	coroapi.current = coro_current;
1055		1271
1056	GCoroAPI = &coroapi;	1272	GCoroAPI = &coroapi;
1057	sv_setiv(sv, (IV)&coroapi);	1273	sv_setiv (sv, (IV)&coroapi);
1058	SvREADONLY_on(sv);	1274	SvREADONLY_on (sv);
1059	}	1275	}
1060	}	1276	}
1061		1277
1062	void	1278	void
1063	ready(self)	1279	_set_current (SV *current)
1064	SV * self
1065	PROTOTYPE: $	1280	PROTOTYPE: $
1066	CODE:	1281	CODE:
1067	api_ready (self);	1282	SvREFCNT_dec (SvRV (coro_current));
		1283	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1068		1284
1069	int	1285	int
		1286	prio (Coro::State coro, int newprio = 0)
		1287	ALIAS:
		1288	nice = 1
		1289	CODE:
		1290	{
		1291	RETVAL = coro->prio;
		1292
		1293	if (items > 1)
		1294	{
		1295	if (ix)
		1296	newprio = coro->prio - newprio;
		1297
		1298	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1299	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1300
		1301	coro->prio = newprio;
		1302	}
		1303	}
		1304	OUTPUT:
		1305	RETVAL
		1306
		1307	SV *
		1308	ready (SV *self)
		1309	PROTOTYPE: $
		1310	CODE:
		1311	RETVAL = boolSV (api_ready (self));
		1312	OUTPUT:
		1313	RETVAL
		1314
		1315	SV *
		1316	is_ready (SV *self)
		1317	PROTOTYPE: $
		1318	CODE:
		1319	RETVAL = boolSV (api_is_ready (self));
		1320	OUTPUT:
		1321	RETVAL
		1322
		1323	int
1070	nready(...)	1324	nready (...)
1071	PROTOTYPE:	1325	PROTOTYPE:
1072	CODE:	1326	CODE:
1073	RETVAL = coro_nready;	1327	RETVAL = coro_nready;
1074	OUTPUT:	1328	OUTPUT:
1075	RETVAL	1329	RETVAL
1076		1330
		1331	MODULE = Coro::State PACKAGE = Coro::AIO
		1332
		1333	SV *
		1334	_get_state ()
		1335	CODE:
		1336	{
		1337	struct io_state *data;
		1338
		1339	RETVAL = newSV (sizeof (struct io_state));
		1340	data = (struct io_state *)SvPVX (RETVAL);
		1341	SvCUR_set (RETVAL, sizeof (struct io_state));
		1342	SvPOK_only (RETVAL);
		1343
		1344	data->errorno = errno;
		1345	data->laststype = PL_laststype;
		1346	data->laststatval = PL_laststatval;
		1347	data->statcache = PL_statcache;
		1348	}
		1349	OUTPUT:
		1350	RETVAL
		1351
1077	void	1352	void
1078	schedule(...)	1353	_set_state (char *data_)
1079	PROTOTYPE:	1354	PROTOTYPE: $
1080	CODE:	1355	CODE:
1081	api_schedule ();	1356	{
		1357	struct io_state data = (void )data_;
1082		1358
1083	void	1359	errno = data->errorno;
1084	cede(...)	1360	PL_laststype = data->laststype;
1085	PROTOTYPE:	1361	PL_laststatval = data->laststatval;
1086	CODE:	1362	PL_statcache = data->statcache;
1087	api_cede ();	1363	}
1088		1364

Diff Legend

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

Comparing Coro/Coro/State.xs (file contents): Revision 1.42 by root, Mon Dec 31 20:41:45 2001 UTC vs. Revision 1.134 by root, Thu Jan 4 23:49:27 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.42 by root, Mon Dec 31 20:41:45 2001 UTC vs.
Revision 1.134 by root, Thu Jan 4 23:49:27 2007 UTC