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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.83 by root, Mon Nov 20 22:32:44 2006 UTC vs.
Revision 1.134 by root, Thu Jan 4 23:49:27 2007 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 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)
12	# ifndef PL_ppaddr	50	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	51	# define PL_ppaddr ppaddr
14	# endif	52	# endif
15	# ifndef call_sv	53	# ifndef call_sv
16	# define call_sv perl_call_sv	54	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
29	# endif	67	# endif
30	#endif	68	#endif
31		69
32	#include <errno.h>	70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
33		74
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	76	# undef STACKGUARD
36	#endif	77	#endif
37		78
38	#ifndef STACKGUARD	79	#ifndef STACKGUARD
39	# define STACKGUARD 0	80	# define STACKGUARD 0
40	#endif	81	#endif
41		82
42	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
43	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
44	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
45	# ifndef MAP_ANONYMOUS
46	# ifdef MAP_ANON
47	# define MAP_ANONYMOUS MAP_ANON
48	# else
49	# undef HAVE_MMAP
50	# endif
51	# endif	86	#endif
52	# include <limits.h>
53	# ifndef PAGESIZE
54	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;
57	# else
58	# define BOOT_PAGESIZE
59	# endif
60	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64		87
65	/* 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
66	* 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
67	* and should be unique. */	90	* and should be unique. */
		91	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	92	#define STACKLEVEL ((void *)&stacklevel)
69		93
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		95
72	#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))
73		105
74	#include "CoroAPI.h"	106	#include "CoroAPI.h"
75		107
76	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
…		…
80	#else	112	#else
81	# define LOCK (void)0	113	# define LOCK (void)0
82	# define UNLOCK (void)0	114	# define UNLOCK (void)0
83	#endif	115	#endif
84		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
85	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	127	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
91		129
92	/* 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 */
93	typedef struct {	134	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	135	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		136
98	coro_context cctx;	137	/* the stack */
99
100	void *sptr;	138	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
102	} coro_stack;
103		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 */
104	struct coro {	162	struct coro {
105	/* the optional C context */	163	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	164	coro_cctx *cctx;
107	void *cursp;
108	int gencnt;
109
110	/* optionally saved, might be zero */
111	AV *defav;
112	SV *defsv;
113	SV *errsv;
114
115	/* saved global state not related to stacks */
116	U8 dowarn;
117	I32 in_eval;
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148	JMPENV *top_env;
149		165
150	/* data associated with this coroutine (initial args) */	166	/* data associated with this coroutine (initial args) */
151	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;
152	};	185	};
153		186
154	typedef struct coro *Coro__State;	187	typedef struct coro *Coro__State;
155	typedef struct coro *Coro__State_or_hashref;	188	typedef struct coro *Coro__State_or_hashref;
156		189
157	static AV *	190	static AV *
158	coro_clone_padlist (pTHX_ CV *cv)	191	coro_clone_padlist (CV *cv)
159	{	192	{
160	AV *padlist = CvPADLIST (cv);	193	AV *padlist = CvPADLIST (cv);
161	AV newpadlist, newpad;	194	AV newpadlist, newpad;
162		195
163	newpadlist = newAV ();	196	newpadlist = newAV ();
164	AvREAL_off (newpadlist);	197	AvREAL_off (newpadlist);
165	#if PERL_VERSION < 9	198	#if PERL_VERSION_ATLEAST (5,9,0)
		199	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		200	#else
166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	201	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
167	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
169	#endif	202	#endif
170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	203	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
171	--AvFILLp (padlist);	204	--AvFILLp (padlist);
172		205
173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	206	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
175		208
176	return newpadlist;	209	return newpadlist;
177	}	210	}
178		211
179	static void	212	static void
180	free_padlist (pTHX_ AV *padlist)	213	free_padlist (AV *padlist)
181	{	214	{
182	/* may be during global destruction */	215	/* may be during global destruction */
183	if (SvREFCNT (padlist))	216	if (SvREFCNT (padlist))
184	{	217	{
185	I32 i = AvFILLp (padlist);	218	I32 i = AvFILLp (padlist);
…		…
206	AV *padlist;	239	AV *padlist;
207	AV av = (AV )mg->mg_obj;	240	AV av = (AV )mg->mg_obj;
208		241
209	/* casting is fun. */	242	/* casting is fun. */
210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	243	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
211	free_padlist (aTHX_ padlist);	244	free_padlist (padlist);
212		245
213	SvREFCNT_dec (av);	246	SvREFCNT_dec (av);
214		247
215	return 0;	248	return 0;
216	}	249	}
217		250
218	#define PERL_MAGIC_coro PERL_MAGIC_ext	251	#define PERL_MAGIC_coro PERL_MAGIC_ext
219		252
220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	253	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
221		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
		261
222	/* the next two functions merely cache the padlists */	262	/* the next two functions merely cache the padlists */
223	static void	263	static void
224	get_padlist (pTHX_ CV *cv)	264	get_padlist (CV *cv)
225	{	265	{
226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	266	MAGIC *mg = CORO_MAGIC (cv);
		267	AV *av;
227		268
228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
230	else	271	else
231	{	272	{
232	#if 0	273	#if PREFER_PERL_FUNCTIONS
233	/* this should work - but it doesn't :( */	274	/* this is probably cleaner, but also slower? */
234	CV *cp = Perl_cv_clone (aTHX_ cv);	275	CV *cp = Perl_cv_clone (cv);
235	CvPADLIST (cv) = CvPADLIST (cp);	276	CvPADLIST (cv) = CvPADLIST (cp);
236	CvPADLIST (cp) = 0;	277	CvPADLIST (cp) = 0;
237	SvREFCNT_dec (cp);	278	SvREFCNT_dec (cp);
238	#else	279	#else
239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	280	CvPADLIST (cv) = coro_clone_padlist (cv);
240	#endif	281	#endif
241	}	282	}
242	}	283	}
243		284
244	static void	285	static void
245	put_padlist (pTHX_ CV *cv)	286	put_padlist (CV *cv)
246	{	287	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	288	MAGIC *mg = CORO_MAGIC (cv);
		289	AV *av;
248		290
249	if (!mg)	291	if (!mg)
250	{	292	{
251	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	293	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
252	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	294	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
253	mg->mg_virtual = &vtbl_coro;	295	mg->mg_virtual = &vtbl_coro;
254	mg->mg_obj = (SV *)newAV ();	296	mg->mg_obj = (SV *)newAV ();
255	}	297	}
256		298
257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	299	av = (AV *)mg->mg_obj;
		300
		301	if (AvFILLp (av) >= AvMAX (av))
		302	av_extend (av, AvMAX (av) + 1);
		303
		304	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
258	}	305	}
259		306
260	#define SB do {	307	#define SB do {
261	#define SE } while (0)	308	#define SE } while (0)
262		309
263	#define LOAD(state) load_state(aTHX_ (state));
264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
265
266	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
267		311
268	static void	312	static void
269	load_state(pTHX_ Coro__State c)	313	load_perl (Coro__State c)
270	{	314	{
271	PL_dowarn = c->dowarn;	315	#define VAR(name,type) PL_ ## name = c->name;
272	PL_in_eval = c->in_eval;	316	# include "state.h"
273		317	#undef VAR
274	PL_curstackinfo = c->curstackinfo;
275	PL_curstack = c->curstack;
276	PL_mainstack = c->mainstack;
277	PL_stack_sp = c->stack_sp;
278	PL_op = c->op;
279	PL_curpad = c->curpad;
280	PL_comppad = c->comppad;
281	PL_compcv = c->compcv;
282	PL_stack_base = c->stack_base;
283	PL_stack_max = c->stack_max;
284	PL_tmps_stack = c->tmps_stack;
285	PL_tmps_floor = c->tmps_floor;
286	PL_tmps_ix = c->tmps_ix;
287	PL_tmps_max = c->tmps_max;
288	PL_markstack = c->markstack;
289	PL_markstack_ptr = c->markstack_ptr;
290	PL_markstack_max = c->markstack_max;
291	PL_scopestack = c->scopestack;
292	PL_scopestack_ix = c->scopestack_ix;
293	PL_scopestack_max = c->scopestack_max;
294	PL_savestack = c->savestack;
295	PL_savestack_ix = c->savestack_ix;
296	PL_savestack_max = c->savestack_max;
297	#if PERL_VERSION < 9
298	PL_retstack = c->retstack;
299	PL_retstack_ix = c->retstack_ix;
300	PL_retstack_max = c->retstack_max;
301	#endif
302	PL_curpm = c->curpm;
303	PL_curcop = c->curcop;
304	PL_top_env = c->top_env;
305		318
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	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	}
309		333
310	{	334	{
311	dSP;	335	dSP;
312	CV *cv;	336	CV *cv;
313		337
314	/* now do the ugly restore mess */	338	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	339	while ((cv = (CV *)POPs))
316	{	340	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	341	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	342	CvDEPTH (cv) = PTR2IV (POPs);
323	}	343	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	344	}
327		345
328	PUTBACK;	346	PUTBACK;
329	}	347	}
330	}	348	}
331		349
332	static void	350	static void
333	save_state(pTHX_ Coro__State c, int flags)	351	save_perl (Coro__State c)
334	{	352	{
335	{	353	{
336	dSP;	354	dSP;
337	I32 cxix = cxstack_ix;	355	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	356	PERL_CONTEXT *ccstk = cxstack;
…		…
341	/*	359	/*
342	* 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
343	* (and reinitialize) all cv's in the whole callchain :(	361	* (and reinitialize) all cv's in the whole callchain :(
344	*/	362	*/
345		363
		364	EXTEND (SP, 3 + 1);
346	PUSHs (Nullsv);	365	PUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	366	/* this loop was inspired by pp_caller */
348	for (;;)	367	for (;;)
349	{	368	{
350	while (cxix >= 0)	369	while (cxix >= 0)
351	{	370	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	371	PERL_CONTEXT *cx = &ccstk[cxix--];
353		372
354	if (CxTYPE(cx) == CXt_SUB)	373	if (CxTYPE (cx) == CXt_SUB)
355	{	374	{
356	CV *cv = cx->blk_sub.cv;	375	CV *cv = cx->blk_sub.cv;
		376
357	if (CvDEPTH(cv))	377	if (CvDEPTH (cv))
358	{	378	{
359	EXTEND (SP, CvDEPTH(cv)*2);	379	EXTEND (SP, 3);
360
361	while (--CvDEPTH(cv))
362	{
363	/* this tells the restore code to increment CvDEPTH */
364	PUSHs (Nullsv);
365	PUSHs ((SV *)cv);
366	}
367
368	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST (cv));
		381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	382	PUSHs ((SV *)cv);
370		383
		384	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	385	get_padlist (cv);
372	}	386	}
373	}	387	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	388	}
383		389
384	if (top_si->si_type == PERLSI_MAIN)	390	if (top_si->si_type == PERLSI_MAIN)
385	break;	391	break;
386		392
…		…
390	}	396	}
391		397
392	PUTBACK;	398	PUTBACK;
393	}	399	}
394		400
395	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;
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	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;
398		405
399	c->dowarn = PL_dowarn;	406	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	407	# include "state.h"
401		408	#undef VAR
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;
406	c->op = PL_op;
407	c->curpad = PL_curpad;
408	c->comppad = PL_comppad;
409	c->compcv = PL_compcv;
410	c->stack_base = PL_stack_base;
411	c->stack_max = PL_stack_max;
412	c->tmps_stack = PL_tmps_stack;
413	c->tmps_floor = PL_tmps_floor;
414	c->tmps_ix = PL_tmps_ix;
415	c->tmps_max = PL_tmps_max;
416	c->markstack = PL_markstack;
417	c->markstack_ptr = PL_markstack_ptr;
418	c->markstack_max = PL_markstack_max;
419	c->scopestack = PL_scopestack;
420	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9
426	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;
429	#endif
430	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;
432	c->top_env = PL_top_env;
433	}	409	}
434		410
435	/*	411	/*
436	* allocate various perl stacks. This is an exact copy	412	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	413	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	414	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	415	* not usually need a lot of stackspace.
440	*/	416	*/
		417	#if PREFER_PERL_FUNCTIONS
		418	# define coro_init_stacks init_stacks
		419	#else
441	static void	420	static void
442	coro_init_stacks (pTHX)	421	coro_init_stacks ()
443	{	422	{
444	LOCK;
445
446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
447	PL_curstackinfo->si_type = PERLSI_MAIN;	424	PL_curstackinfo->si_type = PERLSI_MAIN;
448	PL_curstack = PL_curstackinfo->si_stack;	425	PL_curstack = PL_curstackinfo->si_stack;
449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
450		427
451	PL_stack_base = AvARRAY(PL_curstack);	428	PL_stack_base = AvARRAY(PL_curstack);
452	PL_stack_sp = PL_stack_base;	429	PL_stack_sp = PL_stack_base;
453	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
454		431
455	New(50,PL_tmps_stack,96,SV*);	432	New(50,PL_tmps_stack,128,SV*);
456	PL_tmps_floor = -1;	433	PL_tmps_floor = -1;
457	PL_tmps_ix = -1;	434	PL_tmps_ix = -1;
458	PL_tmps_max = 96;	435	PL_tmps_max = 128;
459		436
460	New(54,PL_markstack,16,I32);	437	New(54,PL_markstack,32,I32);
461	PL_markstack_ptr = PL_markstack;	438	PL_markstack_ptr = PL_markstack;
462	PL_markstack_max = PL_markstack + 16;	439	PL_markstack_max = PL_markstack + 32;
463		440
464	#ifdef SET_MARK_OFFSET	441	#ifdef SET_MARK_OFFSET
465	SET_MARK_OFFSET;	442	SET_MARK_OFFSET;
466	#endif	443	#endif
467		444
468	New(54,PL_scopestack,16,I32);	445	New(54,PL_scopestack,32,I32);
469	PL_scopestack_ix = 0;	446	PL_scopestack_ix = 0;
470	PL_scopestack_max = 16;	447	PL_scopestack_max = 32;
471		448
472	New(54,PL_savestack,96,ANY);	449	New(54,PL_savestack,64,ANY);
473	PL_savestack_ix = 0;	450	PL_savestack_ix = 0;
474	PL_savestack_max = 96;	451	PL_savestack_max = 64;
475		452
476	#if PERL_VERSION < 9	453	#if !PERL_VERSION_ATLEAST (5,9,0)
477	New(54,PL_retstack,8,OP*);	454	New(54,PL_retstack,16,OP*);
478	PL_retstack_ix = 0;	455	PL_retstack_ix = 0;
479	PL_retstack_max = 8;	456	PL_retstack_max = 16;
480	#endif	457	#endif
481
482	UNLOCK;
483	}	458	}
		459	#endif
484		460
485	/*	461	/*
486	* destroy the stacks, the callchain etc...	462	* destroy the stacks, the callchain etc...
487	*/	463	*/
488	static void	464	static void
489	destroy_stacks(pTHX)	465	coro_destroy_stacks ()
490	{	466	{
491	if (!IN_DESTRUCT)	467	if (!IN_DESTRUCT)
492	{	468	{
493	/* is this ugly, I ask? */	469	/* restore all saved variables and stuff */
494	LEAVE_SCOPE (0);	470	LEAVE_SCOPE (0);
		471	assert (PL_tmps_floor == -1);
495		472
496	/* sure it is, but more important: is it correct?? :/ */	473	/* free all temporaries */
497	FREETMPS;	474	FREETMPS;
		475	assert (PL_tmps_ix == -1);
498		476
		477	/* unwind all extra stacks */
499	/POPSTACK_TO (PL_mainstack);//D//use/	478	POPSTACK_TO (PL_mainstack);
		479
		480	/* unwind main stack */
		481	dounwind (-1);
500	}	482	}
501		483
502	while (PL_curstackinfo->si_next)	484	while (PL_curstackinfo->si_next)
503	PL_curstackinfo = PL_curstackinfo->si_next;	485	PL_curstackinfo = PL_curstackinfo->si_next;
504		486
505	while (PL_curstackinfo)	487	while (PL_curstackinfo)
506	{	488	{
507	PERL_SI *p = PL_curstackinfo->si_prev;	489	PERL_SI *p = PL_curstackinfo->si_prev;
508		490
509	{ /D//remove/
510	dSP;
511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
512	PUTBACK; /* possibly superfluous */
513	}
514
515	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
516	{
517	dounwind (-1);/D//remove/
518	SvREFCNT_dec (PL_curstackinfo->si_stack);	492	SvREFCNT_dec (PL_curstackinfo->si_stack);
519	}
520		493
521	Safefree (PL_curstackinfo->si_cxstack);	494	Safefree (PL_curstackinfo->si_cxstack);
522	Safefree (PL_curstackinfo);	495	Safefree (PL_curstackinfo);
523	PL_curstackinfo = p;	496	PL_curstackinfo = p;
524	}	497	}
525		498
526	Safefree (PL_tmps_stack);	499	Safefree (PL_tmps_stack);
527	Safefree (PL_markstack);	500	Safefree (PL_markstack);
528	Safefree (PL_scopestack);	501	Safefree (PL_scopestack);
529	Safefree (PL_savestack);	502	Safefree (PL_savestack);
530	#if PERL_VERSION < 9	503	#if !PERL_VERSION_ATLEAST (5,9,0)
531	Safefree (PL_retstack);	504	Safefree (PL_retstack);
532	#endif	505	#endif
533	}	506	}
534		507
535	static void	508	static void
536	allocate_stack (Coro__State ctx, int alloc)	509	setup_coro (struct coro *coro)
537	{
538	coro_stack *stack;
539
540	New (0, stack, 1, coro_stack);
541
542	stack->refcnt = 1;
543	stack->usecnt = 1;
544	stack->gencnt = ctx->gencnt = 0;
545
546	if (alloc)
547	{
548	#if HAVE_MMAP
549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
551	if (stack->sptr != (void *)-1)
552	{
553	# if STACKGUARD
554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
555	# endif
556	}
557	else
558	#endif
559	{
560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
561	New (0, stack->sptr, STACKSIZE, long);
562	}
563	}
564	else
565	stack->sptr = 0;
566
567	ctx->stack = stack;
568	}
569
570	static void
571	deallocate_stack (Coro__State ctx)
572	{
573	coro_stack *stack = ctx->stack;
574
575	ctx->stack = 0;
576
577	if (stack)
578	{
579	if (!--stack->refcnt)
580	{
581	#ifdef HAVE_MMAP
582	if (stack->ssize > 0 && stack->sptr)
583	munmap (stack->sptr, stack->ssize);
584	else
585	#endif
586	Safefree (stack->sptr);
587
588	Safefree (stack);
589	}
590	else if (ctx->gencnt == stack->gencnt)
591	--stack->usecnt;
592	}
593	}
594
595	static void
596	setup_coro (void *arg)
597	{	510	{
598	/*	511	/*
599	* emulate part of the perl startup here.	512	* emulate part of the perl startup here.
600	*/	513	*/
601	dTHX;	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	{
602	dSP;	560	dSP;
603	Coro__State ctx = (Coro__State)arg;	561	LOGOP myop;
604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
605		562
606	coro_init_stacks (aTHX);	563	Zero (&myop, 1, LOGOP);
607	/PL_curcop = 0;/	564	myop.op_next = PL_op;
608	/PL_in_eval = PL_in_eval;/ /* inherit */	565	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
609	SvREFCNT_dec (GvAV (PL_defgv));
610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
611		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);
612	SPAGAIN;	574	SPAGAIN;
613
614	if (ctx->stack)
615	{
616	ctx->cursp = 0;
617
618	PUSHMARK(SP);
619	PUTBACK;
620	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
621
622	if (SvTRUE (ERRSV))
623	croak (NULL);
624	else
625	croak ("FATAL: CCTXT coroutine returned!");
626	}
627	else
628	{
629	UNOP myop;
630
631	Zero(&myop, 1, UNOP);
632	myop.op_next = Nullop;
633	myop.op_flags = OPf_WANT_VOID;
634
635	PL_op = (OP *)&myop;
636
637	PUSHMARK(SP);
638	XPUSHs (sub_init);
639	/*
640	* the next line is slightly wrong, as PL_op->op_next
641	* is actually being executed so we skip the first op.
642	* that doesn't matter, though, since it is only
643	* pp_nextstate and we never return...
644	* ah yes, and I don't care anyways ;)
645	*/
646	PUTBACK;
647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
648	SPAGAIN;
649
650	ENTER; /* necessary e.g. for dounwind */
651	}
652	}	575	}
653		576
654	static void	577	static void
655	continue_coro (void *arg)	578	coro_run (void *arg)
656	{	579	{
		580	/* coro_run is the alternative tail of transfer(), so unlock here. */
		581	UNLOCK;
		582
657	/*	583	/*
658	* this is a _very_ stripped down perl interpreter ;)	584	* this is a _very_ stripped down perl interpreter ;)
659	*/	585	*/
660	dTHX;
661	Coro__State ctx = (Coro__State)arg;
662
663	PL_top_env = &PL_start_env;	586	PL_top_env = &PL_start_env;
664		587
665	ctx->cursp = 0;	588	/* inject call to cctx_init */
666	PL_op = PL_op->op_next;	589	prepare_cctx ((coro_cctx *)arg);
667	CALLRUNOPS(aTHX);
668		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);
669	abort ();	596	abort ();
670	}	597	}
671		598
		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
672	static void	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
673	transfer (pTHX_ struct coro prev, struct coro next, int flags)	711	transfer (struct coro prev, struct coro next)
674	{	712	{
675	dSTACKLEVEL;	713	dSTACKLEVEL;
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	/* has this coro been created yet? */	723	coro_cctx *prev__cctx;
680	if (next->mainstack)	724
		725	if (prev->flags & CF_NEW)
681	{	726	{
682	LOCK;	727	/* create a new empty context */
683	SAVE (prev, flags);	728	Newz (0, prev->cctx, 1, coro_cctx);
684	LOAD (next);	729	prev->cctx->inuse = 1;
685	UNLOCK;	730	prev->flags &= ~CF_NEW;
686		731	prev->flags \|= CF_RUNNING;
687	/* mark this state as in-use */
688	next->mainstack = 0;
689	next->tmps_ix = -2;
690
691	/* stacklevel changed? if yes, grab the stack for us! */
692	if (flags & TRANSFER_SAVE_CCTXT)
693	{
694	if (!prev->stack)
695	allocate_stack (prev, 0);
696	else if (prev->cursp != stacklevel
697	&& prev->stack->usecnt > 1)
698	{
699	prev->gencnt = ++prev->stack->gencnt;
700	prev->stack->usecnt = 1;
701	}
702
703	/* has our stack been invalidated? */
704	if (next->stack && next->stack->gencnt != next->gencnt)
705	{
706	deallocate_stack (next);
707	allocate_stack (next, 1);
708	coro_create (&(next->stack->cctx),
709	continue_coro, (void *)next,
710	next->stack->sptr, labs (next->stack->ssize));
711	}
712
713	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
714	prev->cursp = stacklevel;
715	/* don't add any code here */
716	}
717	else
718	next->cursp = stacklevel;
719	}	732	}
720	else if (next->tmps_ix == -2)	733
721	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	}
722	else	760	else
723	{	761	{
724	LOCK;	762	/* coroutine already started */
725	SAVE (prev, -1); /* first get rid of the old state */	763	save_perl (prev);
726	UNLOCK;	764	load_perl (next);
727
728	/* create the coroutine for the first time */
729	if (flags & TRANSFER_SAVE_CCTXT)
730	{
731	if (!prev->stack)
732	allocate_stack (prev, 0);
733
734	/* the new coroutine starts with start_env again */
735	PL_top_env = &PL_start_env;
736
737	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
738	{
739	setup_coro (next);
740	next->cursp = stacklevel;
741
742	prev->stack->refcnt++;
743	prev->stack->usecnt++;
744	next->stack = prev->stack;
745	next->gencnt = prev->gencnt;
746	}
747	else
748	{
749	assert (!next->stack);
750	allocate_stack (next, 1);
751	coro_create (&(next->stack->cctx),
752	setup_coro, (void *)next,
753	next->stack->sptr, labs (next->stack->ssize));
754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
755	prev->cursp = stacklevel;
756	/* don't add any code here */
757	}
758	}
759	else
760	{
761	setup_coro (next);
762	next->cursp = stacklevel;
763	}
764	}	765	}
765	}
766		766
767	LOCK;	767	prev__cctx = prev->cctx;
768	if (coro_mortal)	768
769	{	769	/* possibly "free" the cctx */
770	SvREFCNT_dec (coro_mortal);	770	if (prev__cctx->idle_sp == STACKLEVEL)
		771	{
		772	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		773	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		774
		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
771	coro_mortal = 0;	795	free_coro_mortal ();
772	}
773	UNLOCK;	796	UNLOCK;
		797	}
774	}	798	}
775		799
776	#define SV_CORO(sv,func) \	800	struct transfer_args
777	do { \	801	{
778	if (SvROK (sv)) \	802	struct coro prev, next;
779	sv = SvRV (sv); \	803	};
780	\
781	if (SvTYPE (sv) == SVt_PVHV) \
782	{ \
783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
784	\
785	if (!he) \
786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
787	\
788	(sv) = SvRV (HeVAL(he)); \
789	} \
790	\
791	/* must also be changed inside Coro::Cont::yield */ \
792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
794	\
795	} while(0)
796		804
797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))	805	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
798		806
799	static void	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)
		816	{
		817	assert (!(coro->flags & CF_RUNNING));
		818
		819	struct coro temp;
		820	Zero (&temp, 1, struct coro);
		821	temp.save = CORO_SAVE_ALL;
		822
		823	if (coro->flags & CF_RUNNING)
		824	croak ("FATAL: tried to destroy currently running coroutine");
		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
		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
800	api_transfer(pTHX_ SV prev, SV next, int flags)	908	api_transfer (SV prev_sv, SV next_sv)
801	{	909	{
802	SV_CORO (prev, "Coro::transfer");	910	struct transfer_args ta;
803	SV_CORO (next, "Coro::transfer");
804		911
805	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;
806	}	926	}
807		927
808	/ Coro ******************************************************************/	928	/ Coro ******************************************************************/
809		929
810	#define PRIO_MAX 3	930	#define PRIO_MAX 3
…		…
813	#define PRIO_LOW -1	933	#define PRIO_LOW -1
814	#define PRIO_IDLE -3	934	#define PRIO_IDLE -3
815	#define PRIO_MIN -4	935	#define PRIO_MIN -4
816		936
817	/* for Coro.pm */	937	/* for Coro.pm */
818	static GV coro_current, coro_idle;	938	static SV *coro_current;
819	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	939	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
820	static int coro_nready;	940	static int coro_nready;
821		941
822	static void	942	static void
823	coro_enq (pTHX_ SV *sv)	943	coro_enq (SV *coro_sv)
824	{	944	{
825	SV **xprio;
826	int prio;
827
828	if (SvTYPE (sv) != SVt_PVHV)
829	croak ("Coro::ready tried to enqueue something that is not a coroutine");
830
831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
832	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
833
834	prio = prio > PRIO_MAX ? PRIO_MAX
835	: prio < PRIO_MIN ? PRIO_MIN
836	: prio;
837
838	av_push (coro_ready [prio - PRIO_MIN], sv);	945	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
839	coro_nready++;	946	coro_nready++;
840	}	947	}
841		948
842	static SV *	949	static SV *
843	coro_deq (pTHX_ int min_prio)	950	coro_deq (int min_prio)
844	{	951	{
845	int prio = PRIO_MAX - PRIO_MIN;	952	int prio = PRIO_MAX - PRIO_MIN;
846		953
847	min_prio -= PRIO_MIN;	954	min_prio -= PRIO_MIN;
848	if (min_prio < 0)	955	if (min_prio < 0)
…		…
856	}	963	}
857		964
858	return 0;	965	return 0;
859	}	966	}
860		967
861	static void	968	static int
862	api_ready (SV *coro)	969	api_ready (SV *coro_sv)
863	{	970	{
864	dTHX;	971	struct coro *coro;
865		972
866	if (SvROK (coro))	973	if (SvROK (coro_sv))
867	coro = SvRV (coro);	974	coro_sv = SvRV (coro_sv);
		975
		976	coro = SvSTATE (coro_sv);
		977
		978	if (coro->flags & CF_READY)
		979	return 0;
		980
		981	coro->flags \|= CF_READY;
868		982
869	LOCK;	983	LOCK;
870	coro_enq (aTHX_ SvREFCNT_inc (coro));	984	coro_enq (SvREFCNT_inc (coro_sv));
871	UNLOCK;	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;
872	}	1069	}
873		1070
874	static void	1071	static void
875	api_schedule (void)	1072	api_schedule (void)
876	{	1073	{
877	dTHX;	1074	struct transfer_args ta;
878		1075
879	SV prev, next;	1076	prepare_schedule (&ta);
880		1077	TRANSFER (ta);
881	LOCK;
882
883	prev = SvRV (GvSV (coro_current));
884	next = coro_deq (aTHX_ PRIO_MIN);
885
886	if (!next)
887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
888
889	/* free this only after the transfer */
890	coro_mortal = prev;
891	SV_CORO (prev, "Coro::schedule");
892
893	SvRV (GvSV (coro_current)) = next;
894
895	SV_CORO (next, "Coro::schedule");
896
897	UNLOCK;
898
899	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
901	}	1078	}
902		1079
903	static void	1080	static int
904	api_cede (void)	1081	api_cede (void)
905	{	1082	{
906	dTHX;	1083	struct transfer_args ta;
907		1084
908	LOCK;	1085	prepare_cede (&ta);
909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
910	UNLOCK;
911		1086
912	api_schedule ();	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;
913	}	1108	}
914		1109
915	MODULE = Coro::State PACKAGE = Coro::State	1110	MODULE = Coro::State PACKAGE = Coro::State
916		1111
917	PROTOTYPES: ENABLE	1112	PROTOTYPES: DISABLE
918		1113
919	BOOT:	1114	BOOT:
920	{ /* {} necessary for stoopid perl-5.6.x */	1115	{
921	#ifdef USE_ITHREADS	1116	#ifdef USE_ITHREADS
922	MUTEX_INIT (&coro_mutex);	1117	MUTEX_INIT (&coro_mutex);
923	#endif	1118	#endif
924	BOOT_PAGESIZE;	1119	BOOT_PAGESIZE;
925		1120
926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1121	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
929		1122
930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1123	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1124	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
932	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));
933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1127	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
934		1128
935	main_mainstack = PL_mainstack;	1129	main_mainstack = PL_mainstack;
936		1130
937	coroapi.ver = CORO_API_VERSION;	1131	coroapi.ver = CORO_API_VERSION;
938	coroapi.transfer = api_transfer;	1132	coroapi.transfer = api_transfer;
939	}
940		1133
941	Coro::State	1134	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
942	_newprocess(args)	1135	}
943	SV * args	1136
944	PROTOTYPE: $	1137	SV *
		1138	new (char *klass, ...)
945	CODE:	1139	CODE:
946	Coro__State coro;	1140	{
		1141	struct coro *coro;
		1142	HV *hv;
		1143	int i;
947		1144
948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
949	croak ("Coro::State::_newprocess expects an arrayref");
950
951	Newz (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;
952		1149
953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1150	hv = newHV ();
954	/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;
955	/coro->stack = 0;/	1152	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
956		1153
957	RETVAL = coro;	1154	for (i = 1; i < items; i++)
		1155	av_push (coro->args, newSVsv (ST (i)));
		1156	}
958	OUTPUT:	1157	OUTPUT:
959	RETVAL	1158	RETVAL
960		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
961	void	1167	void
962	transfer(prev, next, flags)	1168	_set_stacklevel (...)
963	SV *prev	1169	ALIAS:
964	SV *next	1170	Coro::State::transfer = 1
965	int flags	1171	Coro::schedule = 2
966	PROTOTYPE: @	1172	Coro::cede = 3
		1173	Coro::cede_notself = 4
967	CODE:	1174	CODE:
968	PUTBACK;	1175	{
969	SV_CORO (next, "Coro::transfer");	1176	struct transfer_args ta;
970	SV_CORO (prev, "Coro::transfer");	1177
971	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1178	switch (ix)
972	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
973		1217
974	void	1218	void
975	DESTROY(coro)
976	Coro::State coro
977	CODE:
978
979	if (coro->mainstack && coro->mainstack != main_mainstack)
980	{
981	struct coro temp;
982
983	PUTBACK;
984	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
985	LOAD (aTHX_ coro);
986	SPAGAIN;
987
988	destroy_stacks (aTHX);
989
990	LOAD ((&temp)); /* this will get rid of defsv etc.. */
991	SPAGAIN;
992
993	coro->mainstack = 0;
994	}
995
996	deallocate_stack (coro);
997	SvREFCNT_dec (coro->args);
998	Safefree (coro);
999
1000	void
1001	_exit(code)	1219	_exit (code)
1002	int code	1220	int code
1003	PROTOTYPE: $	1221	PROTOTYPE: $
1004	CODE:	1222	CODE:
1005	_exit (code);	1223	_exit (code);
1006		1224
1007	MODULE = Coro::State PACKAGE = Coro::Cont	1225	int
		1226	cctx_count ()
		1227	CODE:
		1228	RETVAL = cctx_count;
		1229	OUTPUT:
		1230	RETVAL
1008		1231
1009	void	1232	int
1010	yield(...)	1233	cctx_idle ()
1011	PROTOTYPE: @	1234	CODE:
1012	CODE:	1235	RETVAL = cctx_idle;
1013	SV *yieldstack;	1236	OUTPUT:
1014	SV *sv;	1237	RETVAL
1015	AV *defav = GvAV (PL_defgv);
1016	struct coro prev, next;
1017
1018	yieldstack = *hv_fetch (
1019	(HV *)SvRV (GvSV (coro_current)),
1020	"yieldstack", sizeof ("yieldstack") - 1,
1021	0
1022	);
1023
1024	/* set up @_ -- ugly */
1025	av_clear (defav);
1026	av_fill (defav, items - 1);
1027	while (items--)
1028	av_store (defav, items, SvREFCNT_inc (ST(items)));
1029
1030	sv = av_pop ((AV *)SvRV (yieldstack));
1031	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1032	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1033	SvREFCNT_dec (sv);
1034
1035	transfer (aTHX_ prev, next, 0);
1036		1238
1037	MODULE = Coro::State PACKAGE = Coro	1239	MODULE = Coro::State PACKAGE = Coro
1038		1240
1039	BOOT:	1241	BOOT:
1040	{	1242	{
1041	int i;	1243	int i;
		1244
1042	HV *stash = gv_stashpv ("Coro", TRUE);	1245	coro_stash = gv_stashpv ("Coro", TRUE);
1043		1246
1044	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1247	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1045	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1248	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1046	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1249	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1047	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1250	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1048	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1251	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1049	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1252	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1050		1253
1051	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1254	coro_current = get_sv ("Coro::current", FALSE);
1052	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1255	SvREADONLY_on (coro_current);
1053		1256
1054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1257	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1055	coro_ready[i] = newAV ();	1258	coro_ready[i] = newAV ();
1056		1259
1057	{	1260	{
1058	SV *sv = perl_get_sv("Coro::API", 1);	1261	SV *sv = perl_get_sv("Coro::API", 1);
1059		1262
1060	coroapi.schedule = api_schedule;	1263	coroapi.schedule = api_schedule;
		1264	coroapi.save = api_save;
1061	coroapi.cede = api_cede;	1265	coroapi.cede = api_cede;
		1266	coroapi.cede_notself = api_cede_notself;
1062	coroapi.ready = api_ready;	1267	coroapi.ready = api_ready;
		1268	coroapi.is_ready = api_is_ready;
1063	coroapi.nready = &coro_nready;	1269	coroapi.nready = &coro_nready;
1064	coroapi.current = coro_current;	1270	coroapi.current = coro_current;
1065		1271
1066	GCoroAPI = &coroapi;	1272	GCoroAPI = &coroapi;
1067	sv_setiv (sv, (IV)&coroapi);	1273	sv_setiv (sv, (IV)&coroapi);
1068	SvREADONLY_on (sv);	1274	SvREADONLY_on (sv);
1069	}	1275	}
1070	}	1276	}
1071		1277
1072	#if !PERL_MICRO
1073
1074	void	1278	void
1075	ready(self)	1279	_set_current (SV *current)
1076	SV * self
1077	PROTOTYPE: $	1280	PROTOTYPE: $
1078	CODE:	1281	CODE:
1079	api_ready (self);	1282	SvREFCNT_dec (SvRV (coro_current));
1080		1283	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1081	#endif
1082		1284
1083	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
1084	nready(...)	1324	nready (...)
1085	PROTOTYPE:	1325	PROTOTYPE:
1086	CODE:	1326	CODE:
1087	RETVAL = coro_nready;	1327	RETVAL = coro_nready;
1088	OUTPUT:	1328	OUTPUT:
1089	RETVAL	1329	RETVAL
1090		1330
1091	void	1331	MODULE = Coro::State PACKAGE = Coro::AIO
1092	schedule(...)	1332
1093	PROTOTYPE:	1333	SV *
		1334	_get_state ()
1094	CODE:	1335	CODE:
1095	api_schedule ();
1096
1097	void
1098	cede(...)
1099	PROTOTYPE:
1100	CODE:
1101	api_cede ();
1102
1103	# and these are hacks
1104	SV *
1105	_aio_get_state ()
1106	CODE:
1107	{	1336	{
1108	struct {	1337	struct io_state *data;
1109	int errorno;
1110	int laststype;
1111	int laststatval;
1112	Stat_t statcache;
1113	} data;
1114		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
1115	data.errorno = errno;	1344	data->errorno = errno;
1116	data.laststype = PL_laststype;	1345	data->laststype = PL_laststype;
1117	data.laststatval = PL_laststatval;	1346	data->laststatval = PL_laststatval;
1118	data.statcache = PL_statcache;	1347	data->statcache = PL_statcache;
1119
1120	RETVAL = newSVpvn ((char *)&data, sizeof data);
1121	}	1348	}
1122	OUTPUT:	1349	OUTPUT:
1123	RETVAL	1350	RETVAL
1124		1351
1125	void	1352	void
1126	_aio_set_state (char *data_)	1353	_set_state (char *data_)
1127	PROTOTYPE: $	1354	PROTOTYPE: $
1128	CODE:	1355	CODE:
1129	{	1356	{
1130	struct {	1357	struct io_state data = (void )data_;
1131	int errorno;
1132	int laststype;
1133	int laststatval;
1134	Stat_t statcache;
1135	} data = (void )data_;
1136		1358
1137	errno = data->errorno;	1359	errno = data->errorno;
1138	PL_laststype = data->laststype;	1360	PL_laststype = data->laststype;
1139	PL_laststatval = data->laststatval;	1361	PL_laststatval = data->laststatval;
1140	PL_statcache = data->statcache;	1362	PL_statcache = data->statcache;
1141	}	1363	}
		1364

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Comparing Coro/Coro/State.xs (file contents): Revision 1.83 by root, Mon Nov 20 22:32:44 2006 UTC vs. Revision 1.134 by root, Thu Jan 4 23:49:27 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.83 by root, Mon Nov 20 22:32:44 2006 UTC vs.
Revision 1.134 by root, Thu Jan 4 23:49:27 2007 UTC