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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs.
Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC

…		…
4	#include "perl.h"	4	#include "perl.h"
5	#include "XSUB.h"	5	#include "XSUB.h"
6		6
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
9	#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)
10	# ifndef PL_ppaddr	50	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	51	# define PL_ppaddr ppaddr
12	# endif	52	# endif
13	# ifndef call_sv	53	# ifndef call_sv
14	# define call_sv perl_call_sv	54	# define call_sv perl_call_sv
…		…
25	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
26	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
27	# endif	67	# endif
28	#endif	68	#endif
29		69
30	#include <stdio.h>	70	/* 5.8.7 */
31	#include <errno.h>	71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
32		74
33	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
34	# undef STACKGUARD	76	# undef STACKGUARD
35	#endif	77	#endif
36		78
37	#ifndef STACKGUARD	79	#ifndef STACKGUARD
38	# define STACKGUARD 0	80	# define STACKGUARD 0
39	#endif	81	#endif
40		82
41	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
42	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
43	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
44	# ifndef MAP_ANONYMOUS
45	# ifdef MAP_ANON
46	# define MAP_ANONYMOUS MAP_ANON
47	# else
48	# undef HAVE_MMAP
49	# endif
50	# endif
51	# include <limits.h>
52	# ifndef PAGESIZE
53	# define PAGESIZE pagesize
54	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
55	static long pagesize;
56	# else
57	# define BOOT_PAGESIZE
58	# endif
59	#endif	86	#endif
60		87
61	/* 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
62	* 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
63	* and should be unique. */	90	* and should be unique. */
64	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
65	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
66		93
67	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
68		95
		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))
		105
69	#include "CoroAPI.h"	106	#include "CoroAPI.h"
70
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		107
73	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
74	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
75	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
76	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
77	#else	112	#else
78	# define LOCK (void)0	113	# define LOCK (void)0
79	# define UNLOCK (void)0	114	# define UNLOCK (void)0
80	#endif	115	#endif
81		116
		117	/* helper storage struct for Coro::AIO */
		118	struct io_state
		119	{
		120	int errorno;
		121	I32 laststype;
		122	int laststatval;
		123	Stat_t statcache;
		124	};
		125
82	static struct CoroAPI coroapi;	126	static struct CoroAPI coroapi;
83	static AV main_mainstack; / used to differentiate between $main and others */	127	static AV main_mainstack; / used to differentiate between $main and others */
84	static HV coro_state_stash, coro_stash;	128	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	129	static SV coro_mortal; / will be freed after next transfer */
86		130
		131	static struct coro_cctx *cctx_first;
		132	static int cctx_count, cctx_idle;
		133
87	/* this is a structure representing a c-level coroutine */	134	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	135	typedef struct coro_cctx {
89	struct coro_stack *next;	136	struct coro_cctx *next;
90		137
91	/* the stack */	138	/* the stack */
92	void *sptr;	139	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
94		141
95	/* cpu state */	142	/* cpu state */
96	void idle_sp; / sp of top-level transfer/schedule/cede call */	143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
97	JMPENV *top_env;	145	JMPENV *top_env;
98	coro_context cctx;	146	coro_context cctx;
99	} coro_stack;	147
		148	int inuse;
		149
		150	#if USE_VALGRIND
		151	int valgrind_id;
		152	#endif
		153	} coro_cctx;
		154
		155	enum {
		156	CF_RUNNING = 0x0001, /* coroutine is running */
		157	CF_READY = 0x0002, /* coroutine is ready */
		158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		160	};
100		161
101	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
102	struct coro {	163	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	165	coro_cctx *cctx;
105		166
106	/* data associated with this coroutine (initial args) */	167	/* data associated with this coroutine (initial args) */
107	AV *args;	168	AV *args;
108	int refcnt;	169	int refcnt;
		170	int save; /* CORO_SAVE flags */
		171	int flags; /* CF_ flags */
109		172
110	/* optionally saved, might be zero */	173	/* optionally saved, might be zero */
111	AV *defav;	174	AV defav; / @_ */
112	SV *defsv;	175	SV defsv; / $_ */
113	SV *errsv;	176	SV errsv; / $@ */
		177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
114		179
115	/* saved global state not related to stacks */	180	#define VAR(name,type) type name;
116	U8 dowarn;	181	# include "state.h"
117	I32 in_eval;	182	#undef VAR
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		183
149	/* coro process data */	184	/* coro process data */
150	int prio;	185	int prio;
151	};	186	};
152		187
153	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
154	typedef struct coro *Coro__State_or_hashref;	189	typedef struct coro *Coro__State_or_hashref;
155		190
		191	/ Coro ******************************************************************/
		192
		193	#define PRIO_MAX 3
		194	#define PRIO_HIGH 1
		195	#define PRIO_NORMAL 0
		196	#define PRIO_LOW -1
		197	#define PRIO_IDLE -3
		198	#define PRIO_MIN -4
		199
		200	/* for Coro.pm */
		201	static SV *coro_current;
		202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		203	static int coro_nready;
		204
		205	/ lowlevel stuff ********************************************************/
		206
156	static AV *	207	static AV *
157	coro_clone_padlist (CV *cv)	208	coro_clone_padlist (CV *cv)
158	{	209	{
159	AV *padlist = CvPADLIST (cv);	210	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	211	AV newpadlist, newpad;
161		212
162	newpadlist = newAV ();	213	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	214	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	215	#if PERL_VERSION_ATLEAST (5,9,0)
		216	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		217	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	218	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	219	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	220	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	221	--AvFILLp (padlist);
171		222
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	223	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
216		267
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	268	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		269
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	270	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		271
		272	#define CORO_MAGIC(cv) \
		273	SvMAGIC (cv) \
		274	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		275	? SvMAGIC (cv) \
		276	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		277	: 0
		278
221	/* the next two functions merely cache the padlists */	279	/* the next two functions merely cache the padlists */
222	static void	280	static void
223	get_padlist (CV *cv)	281	get_padlist (CV *cv)
224	{	282	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	283	MAGIC *mg = CORO_MAGIC (cv);
		284	AV *av;
226		285
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	288	else
230	{	289	{
231	#if 0	290	#if PREFER_PERL_FUNCTIONS
232	/* this is probably cleaner, but also slower? */	291	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	292	CV *cp = Perl_cv_clone (cv);
234	CvPADLIST (cv) = CvPADLIST (cp);	293	CvPADLIST (cv) = CvPADLIST (cp);
235	CvPADLIST (cp) = 0;	294	CvPADLIST (cp) = 0;
236	SvREFCNT_dec (cp);	295	SvREFCNT_dec (cp);
…		…
241	}	300	}
242		301
243	static void	302	static void
244	put_padlist (CV *cv)	303	put_padlist (CV *cv)
245	{	304	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	305	MAGIC *mg = CORO_MAGIC (cv);
		306	AV *av;
247		307
248	if (!mg)	308	if (!mg)
249	{	309	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	310	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	311	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	312	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	313	mg->mg_obj = (SV *)newAV ();
254	}	314	}
255		315
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	316	av = (AV *)mg->mg_obj;
		317
		318	if (AvFILLp (av) >= AvMAX (av))
		319	av_extend (av, AvMAX (av) + 1);
		320
		321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	322	}
		323
		324	/ load & save, init *****************************************************/
258		325
259	#define SB do {	326	#define SB do {
260	#define SE } while (0)	327	#define SE } while (0)
261		328
262	#define LOAD(state) load_state((state));
263	#define SAVE(state,flags) save_state((state),(flags));
264
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
266		330
267	static void	331	static void
268	load_state(Coro__State c)	332	load_perl (Coro__State c)
269	{	333	{
270	PL_dowarn = c->dowarn;	334	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	335	# include "state.h"
272		336	#undef VAR
273	PL_curstackinfo = c->curstackinfo;
274	PL_curstack = c->curstack;
275	PL_mainstack = c->mainstack;
276	PL_stack_sp = c->stack_sp;
277	PL_op = c->op;
278	PL_curpad = c->curpad;
279	PL_comppad = c->comppad;
280	PL_compcv = c->compcv;
281	PL_stack_base = c->stack_base;
282	PL_stack_max = c->stack_max;
283	PL_tmps_stack = c->tmps_stack;
284	PL_tmps_floor = c->tmps_floor;
285	PL_tmps_ix = c->tmps_ix;
286	PL_tmps_max = c->tmps_max;
287	PL_markstack = c->markstack;
288	PL_markstack_ptr = c->markstack_ptr;
289	PL_markstack_max = c->markstack_max;
290	PL_scopestack = c->scopestack;
291	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9
297	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;
300	#endif
301	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;
303		337
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		341	if (c->irssv)
		342	{
		343	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		344	SvREFCNT_dec (c->irssv);
		345	else
		346	{
		347	REPLACE_SV (PL_rs, c->irssv);
		348	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		349	sv_setsv (c->irssv_sv, PL_rs);
		350	}
		351	}
307		352
308	{	353	{
309	dSP;	354	dSP;
310	CV *cv;	355	CV *cv;
311		356
312	/* now do the ugly restore mess */	357	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	358	while ((cv = (CV *)POPs))
314	{	359	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	360	put_padlist (cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	361	CvDEPTH (cv) = PTR2IV (POPs);
321	}	362	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	363	}
325		364
326	PUTBACK;	365	PUTBACK;
327	}	366	}
328	}	367	}
329		368
330	static void	369	static void
331	save_state(Coro__State c, int flags)	370	save_perl (Coro__State c)
332	{	371	{
333	{	372	{
334	dSP;	373	dSP;
335	I32 cxix = cxstack_ix;	374	I32 cxix = cxstack_ix;
336	PERL_CONTEXT *ccstk = cxstack;	375	PERL_CONTEXT *ccstk = cxstack;
…		…
339	/*	378	/*
340	* the worst thing you can imagine happens first - we have to save	379	* the worst thing you can imagine happens first - we have to save
341	* (and reinitialize) all cv's in the whole callchain :(	380	* (and reinitialize) all cv's in the whole callchain :(
342	*/	381	*/
343		382
		383	EXTEND (SP, 3 + 1);
344	PUSHs (Nullsv);	384	PUSHs (Nullsv);
345	/* this loop was inspired by pp_caller */	385	/* this loop was inspired by pp_caller */
346	for (;;)	386	for (;;)
347	{	387	{
348	while (cxix >= 0)	388	while (cxix >= 0)
349	{	389	{
350	PERL_CONTEXT *cx = &ccstk[cxix--];	390	PERL_CONTEXT *cx = &ccstk[cxix--];
351		391
352	if (CxTYPE(cx) == CXt_SUB)	392	if (CxTYPE (cx) == CXt_SUB)
353	{	393	{
354	CV *cv = cx->blk_sub.cv;	394	CV *cv = cx->blk_sub.cv;
		395
355	if (CvDEPTH(cv))	396	if (CvDEPTH (cv))
356	{	397	{
357	EXTEND (SP, CvDEPTH(cv)*2);	398	EXTEND (SP, 3);
358
359	while (--CvDEPTH(cv))
360	{
361	/* this tells the restore code to increment CvDEPTH */
362	PUSHs (Nullsv);
363	PUSHs ((SV *)cv);
364	}
365
366	PUSHs ((SV *)CvPADLIST(cv));	399	PUSHs ((SV *)CvPADLIST (cv));
		400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	401	PUSHs ((SV *)cv);
368		402
		403	CvDEPTH (cv) = 0;
369	get_padlist (cv);	404	get_padlist (cv);
370	}	405	}
371	}	406	}
372	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)
374	{
375	/* I never used formats, so how should I know how these are implemented? */
376	/* my bold guess is as a simple, plain sub... */
377	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
378	}
379	#endif
380	}	407	}
381		408
382	if (top_si->si_type == PERLSI_MAIN)	409	if (top_si->si_type == PERLSI_MAIN)
383	break;	410	break;
384		411
…		…
388	}	415	}
389		416
390	PUTBACK;	417	PUTBACK;
391	}	418	}
392		419
393	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	420	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
395	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
396		424
397	c->dowarn = PL_dowarn;	425	#define VAR(name,type)c->name = PL_ ## name;
398	c->in_eval = PL_in_eval;	426	# include "state.h"
399		427	#undef VAR
400	c->curstackinfo = PL_curstackinfo;
401	c->curstack = PL_curstack;
402	c->mainstack = PL_mainstack;
403	c->stack_sp = PL_stack_sp;
404	c->op = PL_op;
405	c->curpad = PL_curpad;
406	c->comppad = PL_comppad;
407	c->compcv = PL_compcv;
408	c->stack_base = PL_stack_base;
409	c->stack_max = PL_stack_max;
410	c->tmps_stack = PL_tmps_stack;
411	c->tmps_floor = PL_tmps_floor;
412	c->tmps_ix = PL_tmps_ix;
413	c->tmps_max = PL_tmps_max;
414	c->markstack = PL_markstack;
415	c->markstack_ptr = PL_markstack_ptr;
416	c->markstack_max = PL_markstack_max;
417	c->scopestack = PL_scopestack;
418	c->scopestack_ix = PL_scopestack_ix;
419	c->scopestack_max = PL_scopestack_max;
420	c->savestack = PL_savestack;
421	c->savestack_ix = PL_savestack_ix;
422	c->savestack_max = PL_savestack_max;
423	#if PERL_VERSION < 9
424	c->retstack = PL_retstack;
425	c->retstack_ix = PL_retstack_ix;
426	c->retstack_max = PL_retstack_max;
427	#endif
428	c->curpm = PL_curpm;
429	c->curcop = PL_curcop;
430	}	428	}
431		429
432	/*	430	/*
433	* allocate various perl stacks. This is an exact copy	431	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	432	* of perl.c:init_stacks, except that it uses less memory
435	* on the (sometimes correct) assumption that coroutines do	433	* on the (sometimes correct) assumption that coroutines do
436	* not usually need a lot of stackspace.	434	* not usually need a lot of stackspace.
437	*/	435	*/
		436	#if PREFER_PERL_FUNCTIONS
		437	# define coro_init_stacks init_stacks
		438	#else
438	static void	439	static void
439	coro_init_stacks ()	440	coro_init_stacks ()
440	{	441	{
441	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
442	PL_curstackinfo->si_type = PERLSI_MAIN;	443	PL_curstackinfo->si_type = PERLSI_MAIN;
443	PL_curstack = PL_curstackinfo->si_stack;	444	PL_curstack = PL_curstackinfo->si_stack;
444	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	445	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
445		446
446	PL_stack_base = AvARRAY(PL_curstack);	447	PL_stack_base = AvARRAY(PL_curstack);
447	PL_stack_sp = PL_stack_base;	448	PL_stack_sp = PL_stack_base;
448	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	449	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
449		450
450	New(50,PL_tmps_stack,96,SV*);	451	New(50,PL_tmps_stack,128,SV*);
451	PL_tmps_floor = -1;	452	PL_tmps_floor = -1;
452	PL_tmps_ix = -1;	453	PL_tmps_ix = -1;
453	PL_tmps_max = 96;	454	PL_tmps_max = 128;
454		455
455	New(54,PL_markstack,16,I32);	456	New(54,PL_markstack,32,I32);
456	PL_markstack_ptr = PL_markstack;	457	PL_markstack_ptr = PL_markstack;
457	PL_markstack_max = PL_markstack + 16;	458	PL_markstack_max = PL_markstack + 32;
458		459
459	#ifdef SET_MARK_OFFSET	460	#ifdef SET_MARK_OFFSET
460	SET_MARK_OFFSET;	461	SET_MARK_OFFSET;
461	#endif	462	#endif
462		463
463	New(54,PL_scopestack,16,I32);	464	New(54,PL_scopestack,32,I32);
464	PL_scopestack_ix = 0;	465	PL_scopestack_ix = 0;
465	PL_scopestack_max = 16;	466	PL_scopestack_max = 32;
466		467
467	New(54,PL_savestack,96,ANY);	468	New(54,PL_savestack,64,ANY);
468	PL_savestack_ix = 0;	469	PL_savestack_ix = 0;
469	PL_savestack_max = 96;	470	PL_savestack_max = 64;
470		471
471	#if PERL_VERSION < 9	472	#if !PERL_VERSION_ATLEAST (5,9,0)
472	New(54,PL_retstack,8,OP*);	473	New(54,PL_retstack,16,OP*);
473	PL_retstack_ix = 0;	474	PL_retstack_ix = 0;
474	PL_retstack_max = 8;	475	PL_retstack_max = 16;
475	#endif	476	#endif
476	}	477	}
		478	#endif
477		479
478	/*	480	/*
479	* destroy the stacks, the callchain etc...	481	* destroy the stacks, the callchain etc...
480	*/	482	*/
481	static void	483	static void
482	destroy_stacks()	484	coro_destroy_stacks ()
483	{	485	{
484	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
485	{	487	{
486	/* is this ugly, I ask? */	488	/* restore all saved variables and stuff */
487	LEAVE_SCOPE (0);	489	LEAVE_SCOPE (0);
		490	assert (PL_tmps_floor == -1);
488		491
489	/* sure it is, but more important: is it correct?? :/ */	492	/* free all temporaries */
490	FREETMPS;	493	FREETMPS;
		494	assert (PL_tmps_ix == -1);
491		495
		496	/* unwind all extra stacks */
492	/POPSTACK_TO (PL_mainstack);//D//use/	497	POPSTACK_TO (PL_mainstack);
		498
		499	/* unwind main stack */
		500	dounwind (-1);
493	}	501	}
494		502
495	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
496	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
497		505
498	while (PL_curstackinfo)	506	while (PL_curstackinfo)
499	{	507	{
500	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
501		509
502	{ /D//remove/
503	dSP;
504	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
505	PUTBACK; /* possibly superfluous */
506	}
507
508	if (!IN_DESTRUCT)	510	if (!IN_DESTRUCT)
509	{
510	dounwind (-1);/D//remove/
511	SvREFCNT_dec (PL_curstackinfo->si_stack);	511	SvREFCNT_dec (PL_curstackinfo->si_stack);
512	}
513		512
514	Safefree (PL_curstackinfo->si_cxstack);	513	Safefree (PL_curstackinfo->si_cxstack);
515	Safefree (PL_curstackinfo);	514	Safefree (PL_curstackinfo);
516	PL_curstackinfo = p;	515	PL_curstackinfo = p;
517	}	516	}
518		517
519	Safefree (PL_tmps_stack);	518	Safefree (PL_tmps_stack);
520	Safefree (PL_markstack);	519	Safefree (PL_markstack);
521	Safefree (PL_scopestack);	520	Safefree (PL_scopestack);
522	Safefree (PL_savestack);	521	Safefree (PL_savestack);
523	#if PERL_VERSION < 9	522	#if !PERL_VERSION_ATLEAST (5,9,0)
524	Safefree (PL_retstack);	523	Safefree (PL_retstack);
525	#endif	524	#endif
526	}	525	}
		526
		527	/ coroutine stack handling **********************************************/
527		528
528	static void	529	static void
529	setup_coro (struct coro *coro)	530	setup_coro (struct coro *coro)
530	{	531	{
531	/*	532	/*
532	* emulate part of the perl startup here.	533	* emulate part of the perl startup here.
533	*/	534	*/
534	dTHX;	535
		536	coro_init_stacks ();
		537
		538	PL_curcop = &PL_compiling;
		539	PL_in_eval = EVAL_NULL;
		540	PL_curpm = 0;
		541	PL_localizing = 0;
		542	PL_dirty = 0;
		543	PL_restartop = 0;
		544
		545	{
		546	dSP;
		547	LOGOP myop;
		548
		549	SvREFCNT_dec (GvAV (PL_defgv));
		550	GvAV (PL_defgv) = coro->args; coro->args = 0;
		551
		552	Zero (&myop, 1, LOGOP);
		553	myop.op_next = Nullop;
		554	myop.op_flags = OPf_WANT_VOID;
		555
		556	PUSHMARK (SP);
		557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		558	PUTBACK;
		559	PL_op = (OP *)&myop;
		560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		561	SPAGAIN;
		562	}
		563
		564	ENTER; /* necessary e.g. for dounwind */
		565	}
		566
		567	static void
		568	free_coro_mortal ()
		569	{
		570	if (coro_mortal)
		571	{
		572	SvREFCNT_dec (coro_mortal);
		573	coro_mortal = 0;
		574	}
		575	}
		576
		577	/* inject a fake call to Coro::State::_cctx_init into the execution */
		578	static void NOINLINE
		579	prepare_cctx (coro_cctx *cctx)
		580	{
535	dSP;	581	dSP;
536	UNOP myop;	582	LOGOP myop;
537	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
538		583
539	coro_init_stacks ();
540	/PL_curcop = 0;/
541	/PL_in_eval = PL_in_eval;/ /* inherit */
542	SvREFCNT_dec (GvAV (PL_defgv));
543	GvAV (PL_defgv) = coro->args; coro->args = 0;
544
545	SPAGAIN;
546
547	Zero (&myop, 1, UNOP);	584	Zero (&myop, 1, LOGOP);
548	myop.op_next = Nullop;	585	myop.op_next = PL_op;
549	myop.op_flags = OPf_WANT_VOID;	586	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
550		587
		588	PUSHMARK (SP);
		589	EXTEND (SP, 2);
		590	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		591	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		592	PUTBACK;
551	PL_op = (OP *)&myop;	593	PL_op = (OP *)&myop;
552
553	PUSHMARK(SP);
554	XPUSHs (sub_init);
555	PUTBACK;
556	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
557	SPAGAIN;	595	SPAGAIN;
558
559	ENTER; /* necessary e.g. for dounwind */
560	}
561
562	static void
563	free_coro_mortal ()
564	{
565	if (coro_mortal)
566	{
567	SvREFCNT_dec (coro_mortal);
568	coro_mortal = 0;
569	}
570	}
571
572	static void
573	prepare_cctx (coro_stack *cctx)
574	{
575	dSP;
576	UNOP myop;
577
578	Zero (&myop, 1, UNOP);
579	myop.op_next = PL_op;
580	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
581
582	PUSHMARK(SP);
583	EXTEND (SP, 2);
584	PUSHs (newSViv (PTR2IV (cctx)));
585	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
586	PUTBACK;
587	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
588	SPAGAIN;
589	}	596	}
590		597
591	static void	598	static void
592	coro_run (void *arg)	599	coro_run (void *arg)
593	{	600	{
		601	/* coro_run is the alternative tail of transfer(), so unlock here. */
		602	UNLOCK;
		603
594	/*	604	/*
595	* this is a _very_ stripped down perl interpreter ;)	605	* this is a _very_ stripped down perl interpreter ;)
596	*/	606	*/
597	UNLOCK;
598
599	PL_top_env = &PL_start_env;	607	PL_top_env = &PL_start_env;
		608
		609	/* inject call to cctx_init */
600	prepare_cctx ((coro_stack *)arg);	610	prepare_cctx ((coro_cctx *)arg);
601		611
602	/* somebody will hit me for both perl_run and PL_restartop */	612	/* somebody will hit me for both perl_run and PL_restartop */
603	perl_run (PERL_GET_CONTEXT);	613	PL_restartop = PL_op;
		614	perl_run (PL_curinterp);
604		615
605	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);	616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
606	abort ();	617	abort ();
607	}	618	}
608		619
609	static coro_stack *	620	static coro_cctx *
610	stack_new ()	621	cctx_new ()
611	{	622	{
612	coro_stack *stack;	623	coro_cctx *cctx;
613		624
		625	++cctx_count;
		626
614	New (0, stack, 1, coro_stack);	627	Newz (0, cctx, 1, coro_cctx);
615		628
616	#if HAVE_MMAP	629	#if HAVE_MMAP
617		630
618	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
619	/* mmap suppsedly does allocate-on-write for us */	632	/* mmap supposedly does allocate-on-write for us */
620	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	633	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
621		634
622	if (stack->sptr == (void *)-1)	635	if (cctx->sptr == (void *)-1)
623	{	636	{
624	perror ("FATAL: unable to mmap stack for coroutine");	637	perror ("FATAL: unable to mmap stack for coroutine");
625	_exit (EXIT_FAILURE);	638	_exit (EXIT_FAILURE);
626	}	639	}
627		640
628	# if STACKGUARD	641	# if STACKGUARD
629	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	642	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
630	# endif	643	# endif
631		644
632	#else	645	#else
633		646
634	stack->ssize = STACKSIZE * (long)sizeof (long);	647	cctx->ssize = STACKSIZE * (long)sizeof (long);
635	New (0, stack->sptr, STACKSIZE, long);	648	New (0, cctx->sptr, STACKSIZE, long);
636		649
637	if (!stack->sptr)	650	if (!cctx->sptr)
638	{	651	{
639	perror (stderr, "FATAL: unable to malloc stack for coroutine");	652	perror ("FATAL: unable to malloc stack for coroutine");
640	_exit (EXIT_FAILURE);	653	_exit (EXIT_FAILURE);
641	}	654	}
642		655
643	#endif	656	#endif
644		657
		658	#if USE_VALGRIND
		659	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		660	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		661	cctx->ssize + (char *)cctx->sptr
		662	);
		663	#endif
		664
645	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	665	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
646		666
647	return stack;	667	return cctx;
648	}	668	}
649		669
650	static void	670	static void
651	stack_free (coro_stack *stack)	671	cctx_destroy (coro_cctx *cctx)
652	{	672	{
653	if (!stack)	673	if (!cctx)
654	return;	674	return;
655		675
		676	--cctx_count;
		677
		678	#if USE_VALGRIND
		679	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		680	#endif
		681
656	#if HAVE_MMAP	682	#if HAVE_MMAP
657	munmap (stack->sptr, stack->ssize);	683	munmap (cctx->sptr, cctx->ssize);
658	#else	684	#else
659	Safefree (stack->sptr);	685	Safefree (cctx->sptr);
660	#endif	686	#endif
661		687
662	Safefree (stack);	688	Safefree (cctx);
663	}	689	}
664		690
665	static coro_stack *stack_first;
666
667	static coro_stack *	691	static coro_cctx *
668	stack_get ()	692	cctx_get ()
669	{	693	{
670	coro_stack *stack;	694	coro_cctx *cctx;
671		695
672	if (stack_first)	696	if (cctx_first)
673	{	697	{
674	stack = stack_first;	698	cctx = cctx_first;
675	stack_first = stack->next;	699	cctx_first = cctx->next;
		700	--cctx_idle;
676	}	701	}
677	else	702	else
678	{	703	{
679	stack = stack_new ();	704	cctx = cctx_new ();
680	PL_op = PL_op->op_next;	705	PL_op = PL_op->op_next;
681	}	706	}
682		707
683	return stack;	708	return cctx;
684	}	709	}
685		710
686	static void	711	static void
687	stack_put (coro_stack *stack)	712	cctx_put (coro_cctx *cctx)
688	{	713	{
689	stack->next = stack_first;	714	/* free another cctx if overlimit */
690	stack_first = stack;	715	if (cctx_idle >= MAX_IDLE_CCTX)
		716	{
		717	coro_cctx *first = cctx_first;
		718	cctx_first = first->next;
		719	--cctx_idle;
		720
		721	assert (!first->inuse);
		722	cctx_destroy (first);
		723	}
		724
		725	++cctx_idle;
		726	cctx->next = cctx_first;
		727	cctx_first = cctx;
691	}	728	}
		729
		730	/ coroutine switching ***************************************************/
692		731
693	/* never call directly, always through the coro_state_transfer global variable */	732	/* never call directly, always through the coro_state_transfer global variable */
694	static void	733	static void NOINLINE
695	transfer_impl (struct coro prev, struct coro next, int flags)	734	transfer (struct coro prev, struct coro next)
696	{	735	{
697	dSTACKLEVEL;	736	dSTACKLEVEL;
698		737
699	/* sometimes transfer is only called to set idle_sp */	738	/* sometimes transfer is only called to set idle_sp */
700	if (flags == TRANSFER_SET_STACKLEVEL)	739	if (!next)
		740	{
701	((coro_stack *)prev)->idle_sp = STACKLEVEL;	741	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		743	}
702	else if (prev != next)	744	else if (prev != next)
703	{	745	{
704	coro_stack *prev__stack;	746	coro_cctx *prev__cctx;
		747
		748	if (prev->flags & CF_NEW)
		749	{
		750	/* create a new empty context */
		751	Newz (0, prev->cctx, 1, coro_cctx);
		752	prev->cctx->inuse = 1;
		753	prev->flags &= ~CF_NEW;
		754	prev->flags \|= CF_RUNNING;
		755	}
		756
		757	/TODO: must not croak here /
		758	if (!prev->flags & CF_RUNNING)
		759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		760
		761	if (next->flags & CF_RUNNING)
		762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		763
		764	if (next->flags & CF_DESTROYED)
		765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		766
		767	prev->flags &= ~CF_RUNNING;
		768	next->flags \|= CF_RUNNING;
705		769
706	LOCK;	770	LOCK;
707		771
708	if (next->mainstack)	772	if (next->flags & CF_NEW)
709	{	773	{
710	/* coroutine already started */	774	/* need to start coroutine */
711	SAVE (prev, flags);	775	next->flags &= ~CF_NEW;
712	LOAD (next);	776	/* first get rid of the old state */
		777	save_perl (prev);
		778	/* setup coroutine call */
		779	setup_coro (next);
		780	/* need a new stack */
		781	assert (!next->cctx);
713	}	782	}
714	else	783	else
715	{	784	{
716	/* need to start coroutine */	785	/* coroutine already started */
717	/* first get rid of the old state */	786	save_perl (prev);
718	SAVE (prev, -1);	787	load_perl (next);
719	/* setup coroutine call */
720	setup_coro (next);
721	/* need a stack */
722	next->stack = 0;
723	}	788	}
724		789
725	if (!prev->stack)
726	/* create a new empty context */
727	Newz (0, prev->stack, 1, coro_stack);
728
729	prev__stack = prev->stack;	790	prev__cctx = prev->cctx;
730		791
731	/* possibly "free" the stack */	792	/* possibly "free" the cctx */
732	if (prev__stack->idle_sp == STACKLEVEL)	793	if (prev__cctx->idle_sp == STACKLEVEL)
733	{	794	{
734	stack_put (prev__stack);	795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		797
735	prev->stack = 0;	798	prev->cctx = 0;
		799
		800	cctx_put (prev__cctx);
		801	prev__cctx->inuse = 0;
736	}	802	}
737		803
738	if (!next->stack)	804	if (!next->cctx)
739	next->stack = stack_get ();
740
741	if (prev__stack != next->stack)
742	{	805	{
743	prev__stack->top_env = PL_top_env;	806	next->cctx = cctx_get ();
744	PL_top_env = next->stack->top_env;	807	assert (!next->cctx->inuse);
745	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	808	next->cctx->inuse = 1;
746	}	809	}
747		810
		811	if (prev__cctx != next->cctx)
		812	{
		813	prev__cctx->top_env = PL_top_env;
		814	PL_top_env = next->cctx->top_env;
		815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		816	}
		817
748	free_coro_mortal ();	818	free_coro_mortal ();
749
750	UNLOCK;	819	UNLOCK;
751	}	820	}
752	}	821	}
753		822
754	/* use this function pointer to call the above function */
755	/* this is done to increase chances of the compiler not inlining the call */
756	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
757	void (coro_state_transfer)(struct coro prev, struct coro *next, int flags) = transfer_impl;
758
759	struct transfer_args	823	struct transfer_args
760	{	824	{
761	struct coro prev, next;	825	struct coro prev, next;
762	int flags;
763	};	826	};
764		827
765	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
766		829
		830	/ high level stuff ******************************************************/
		831
767	static void	832	static int
768	coro_state_destroy (struct coro *coro)	833	coro_state_destroy (struct coro *coro)
769	{	834	{
770	if (coro->refcnt--)	835	if (coro->flags & CF_DESTROYED)
771	return;	836	return 0;
		837
		838	coro->flags \|= CF_DESTROYED;
		839
		840	if (coro->flags & CF_READY)
		841	{
		842	/* reduce nready, as destroying a ready coro effectively unreadies it */
		843	/* alternative: look through all ready queues and remove the coro */
		844	LOCK;
		845	--coro_nready;
		846	UNLOCK;
		847	}
		848	else
		849	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
772		850
773	if (coro->mainstack && coro->mainstack != main_mainstack)	851	if (coro->mainstack && coro->mainstack != main_mainstack)
774	{	852	{
		853	assert (!(coro->flags & CF_RUNNING));
		854
775	struct coro temp;	855	struct coro temp;
		856	Zero (&temp, 1, struct coro);
		857	temp.save = CORO_SAVE_ALL;
776		858
777	SAVE ((&temp), TRANSFER_SAVE_ALL);	859	if (coro->flags & CF_RUNNING)
778	LOAD (coro);	860	croak ("FATAL: tried to destroy currently running coroutine");
779		861
		862	save_perl (&temp);
		863	load_perl (coro);
		864
780	destroy_stacks ();	865	coro_destroy_stacks ();
781		866
782	LOAD ((&temp)); /* this will get rid of defsv etc.. */	867	load_perl (&temp); /* this will get rid of defsv etc.. */
783		868
784	coro->mainstack = 0;	869	coro->mainstack = 0;
785	}	870	}
786		871
787	stack_free (coro->stack);	872	cctx_destroy (coro->cctx);
788	SvREFCNT_dec (coro->args);	873	SvREFCNT_dec (coro->args);
789	Safefree (coro);	874
		875	return 1;
790	}	876	}
791		877
792	static int	878	static int
793	coro_state_clear (pTHX_ SV sv, MAGIC mg)	879	coro_state_free (pTHX_ SV sv, MAGIC mg)
794	{	880	{
795	struct coro coro = (struct coro )mg->mg_ptr;	881	struct coro coro = (struct coro )mg->mg_ptr;
796	mg->mg_ptr = 0;	882	mg->mg_ptr = 0;
797		883
		884	if (--coro->refcnt < 0)
		885	{
798	coro_state_destroy (coro);	886	coro_state_destroy (coro);
		887	Safefree (coro);
		888	}
799		889
800	return 0;	890	return 0;
801	}	891	}
802		892
803	static int	893	static int
…		…
808	++coro->refcnt;	898	++coro->refcnt;
809		899
810	return 0;	900	return 0;
811	}	901	}
812		902
813	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	903	static MGVTBL coro_state_vtbl = {
		904	0, 0, 0, 0,
		905	coro_state_free,
		906	0,
		907	#ifdef MGf_DUP
		908	coro_state_dup,
		909	#else
		910	# define MGf_DUP 0
		911	#endif
		912	};
814		913
815	static struct coro *	914	static struct coro *
816	SvSTATE (SV *coro)	915	SvSTATE (SV *coro)
817	{	916	{
818	HV *stash;	917	HV *stash;
…		…
833	assert (mg->mg_type == PERL_MAGIC_ext);	932	assert (mg->mg_type == PERL_MAGIC_ext);
834	return (struct coro *)mg->mg_ptr;	933	return (struct coro *)mg->mg_ptr;
835	}	934	}
836		935
837	static void	936	static void
838	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	937	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
839	{	938	{
840	ta->prev = SvSTATE (prev);	939	ta->prev = SvSTATE (prev_sv);
841	ta->next = SvSTATE (next);	940	ta->next = SvSTATE (next_sv);
842	ta->flags = flags;
843	}	941	}
844		942
845	static void	943	static void
846	api_transfer (SV prev, SV next, int flags)	944	api_transfer (SV prev_sv, SV next_sv)
847	{	945	{
848	dTHX;
849	struct transfer_args ta;	946	struct transfer_args ta;
850		947
851	prepare_transfer (&ta, prev, next, flags);	948	prepare_transfer (&ta, prev_sv, next_sv);
852	TRANSFER (ta);	949	TRANSFER (ta);
853	}	950	}
854		951
		952	static int
		953	api_save (SV *coro_sv, int new_save)
		954	{
		955	struct coro *coro = SvSTATE (coro_sv);
		956	int old_save = coro->save;
		957
		958	if (new_save >= 0)
		959	coro->save = new_save;
		960
		961	return old_save;
		962	}
		963
855	/ Coro ******************************************************************/	964	/ Coro ******************************************************************/
856		965
857	#define PRIO_MAX 3
858	#define PRIO_HIGH 1
859	#define PRIO_NORMAL 0
860	#define PRIO_LOW -1
861	#define PRIO_IDLE -3
862	#define PRIO_MIN -4
863
864	/* for Coro.pm */
865	static GV coro_current, coro_idle;
866	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
867	static int coro_nready;
868
869	static void	966	static void
870	coro_enq (SV *sv)	967	coro_enq (SV *coro_sv)
871	{	968	{
872	int prio;
873
874	if (SvTYPE (sv) != SVt_PVHV)
875	croak ("Coro::ready tried to enqueue something that is not a coroutine");
876
877	prio = SvSTATE (sv)->prio;
878
879	av_push (coro_ready [prio - PRIO_MIN], sv);	969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
880	coro_nready++;
881	}	970	}
882		971
883	static SV *	972	static SV *
884	coro_deq (int min_prio)	973	coro_deq (int min_prio)
885	{	974	{
…		…
889	if (min_prio < 0)	978	if (min_prio < 0)
890	min_prio = 0;	979	min_prio = 0;
891		980
892	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	981	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
893	if (AvFILLp (coro_ready [prio]) >= 0)	982	if (AvFILLp (coro_ready [prio]) >= 0)
894	{
895	coro_nready--;
896	return av_shift (coro_ready [prio]);	983	return av_shift (coro_ready [prio]);
897	}
898		984
899	return 0;	985	return 0;
900	}	986	}
901		987
902	static void	988	static int
903	api_ready (SV *coro)	989	api_ready (SV *coro_sv)
904	{	990	{
905	dTHX;	991	struct coro *coro;
906		992
907	if (SvROK (coro))	993	if (SvROK (coro_sv))
908	coro = SvRV (coro);	994	coro_sv = SvRV (coro_sv);
		995
		996	coro = SvSTATE (coro_sv);
		997
		998	if (coro->flags & CF_READY)
		999	return 0;
		1000
		1001	coro->flags \|= CF_READY;
909		1002
910	LOCK;	1003	LOCK;
911	coro_enq (SvREFCNT_inc (coro));	1004	coro_enq (SvREFCNT_inc (coro_sv));
		1005	++coro_nready;
912	UNLOCK;	1006	UNLOCK;
		1007
		1008	return 1;
		1009	}
		1010
		1011	static int
		1012	api_is_ready (SV *coro_sv)
		1013	{
		1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);
913	}	1015	}
914		1016
915	static void	1017	static void
916	prepare_schedule (struct transfer_args *ta)	1018	prepare_schedule (struct transfer_args *ta)
917	{	1019	{
918	SV current, prev, *next;	1020	SV prev_sv, next_sv;
919
920	current = GvSV (coro_current);
921		1021
922	for (;;)	1022	for (;;)
923	{	1023	{
924	LOCK;	1024	LOCK;
925	next = coro_deq (PRIO_MIN);	1025	next_sv = coro_deq (PRIO_MIN);
		1026
		1027	/* nothing to schedule: call the idle handler */
		1028	if (!next_sv)
		1029	{
		1030	UNLOCK;
		1031	dSP;
		1032
		1033	ENTER;
		1034	SAVETMPS;
		1035
		1036	PUSHMARK (SP);
		1037	PUTBACK;
		1038	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1039
		1040	FREETMPS;
		1041	LEAVE;
		1042	continue;
		1043	}
		1044
		1045	ta->next = SvSTATE (next_sv);
		1046
		1047	/* cannot transfer to destroyed coros, skip and look for next */
		1048	if (ta->next->flags & CF_DESTROYED)
		1049	{
		1050	UNLOCK;
		1051	SvREFCNT_dec (next_sv);
		1052	/* coro_nready is already taken care of by destroy */
		1053	continue;
		1054	}
		1055
		1056	--coro_nready;
926	UNLOCK;	1057	UNLOCK;
927
928	if (next)
929	break;	1058	break;
930
931	{
932	dSP;
933
934	ENTER;
935	SAVETMPS;
936
937	PUSHMARK (SP);
938	PUTBACK;
939	call_sv (GvSV (coro_idle), G_DISCARD);
940
941	FREETMPS;
942	LEAVE;
943	}	1059	}
944	}
945
946	prev = SvRV (current);
947	SvRV (current) = next;
948		1060
949	/* free this only after the transfer */	1061	/* free this only after the transfer */
		1062	prev_sv = SvRV (coro_current);
		1063	SvRV_set (coro_current, next_sv);
		1064	ta->prev = SvSTATE (prev_sv);
		1065
		1066	assert (ta->next->flags & CF_READY);
		1067	ta->next->flags &= ~CF_READY;
		1068
950	LOCK;	1069	LOCK;
951	free_coro_mortal ();	1070	free_coro_mortal ();
		1071	coro_mortal = prev_sv;
952	UNLOCK;	1072	UNLOCK;
953	coro_mortal = prev;
954
955	ta->prev = SvSTATE (prev);
956	ta->next = SvSTATE (next);
957	ta->flags = TRANSFER_SAVE_ALL;
958	}	1073	}
959		1074
960	static void	1075	static void
961	prepare_cede (struct transfer_args *ta)	1076	prepare_cede (struct transfer_args *ta)
962	{	1077	{
963	LOCK;	1078	api_ready (coro_current);
964	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
965	UNLOCK;
966
967	prepare_schedule (ta);	1079	prepare_schedule (ta);
968	}	1080	}
969		1081
		1082	static int
		1083	prepare_cede_notself (struct transfer_args *ta)
		1084	{
		1085	if (coro_nready)
		1086	{
		1087	SV *prev = SvRV (coro_current);
		1088	prepare_schedule (ta);
		1089	api_ready (prev);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
		1094	}
		1095
970	static void	1096	static void
971	api_schedule (void)	1097	api_schedule (void)
972	{	1098	{
973	dTHX;
974	struct transfer_args ta;	1099	struct transfer_args ta;
975		1100
976	prepare_schedule (&ta);	1101	prepare_schedule (&ta);
977	TRANSFER (ta);	1102	TRANSFER (ta);
978	}	1103	}
979		1104
980	static void	1105	static int
981	api_cede (void)	1106	api_cede (void)
982	{	1107	{
983	dTHX;
984	struct transfer_args ta;	1108	struct transfer_args ta;
985		1109
986	prepare_cede (&ta);	1110	prepare_cede (&ta);
		1111
		1112	if (ta.prev != ta.next)
		1113	{
987	TRANSFER (ta);	1114	TRANSFER (ta);
		1115	return 1;
		1116	}
		1117	else
		1118	return 0;
		1119	}
		1120
		1121	static int
		1122	api_cede_notself (void)
		1123	{
		1124	struct transfer_args ta;
		1125
		1126	if (prepare_cede_notself (&ta))
		1127	{
		1128	TRANSFER (ta);
		1129	return 1;
		1130	}
		1131	else
		1132	return 0;
988	}	1133	}
989		1134
990	MODULE = Coro::State PACKAGE = Coro::State	1135	MODULE = Coro::State PACKAGE = Coro::State
991		1136
992	PROTOTYPES: DISABLE	1137	PROTOTYPES: DISABLE
…		…
998	#endif	1143	#endif
999	BOOT_PAGESIZE;	1144	BOOT_PAGESIZE;
1000		1145
1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1146	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1002		1147
1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1148	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1149	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1005	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1150	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1151	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1152	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1006		1153
1007	main_mainstack = PL_mainstack;	1154	main_mainstack = PL_mainstack;
1008		1155
1009	coroapi.ver = CORO_API_VERSION;	1156	coroapi.ver = CORO_API_VERSION;
1010	coroapi.transfer = api_transfer;	1157	coroapi.transfer = api_transfer;
…		…
1020	HV *hv;	1167	HV *hv;
1021	int i;	1168	int i;
1022		1169
1023	Newz (0, coro, 1, struct coro);	1170	Newz (0, coro, 1, struct coro);
1024	coro->args = newAV ();	1171	coro->args = newAV ();
		1172	coro->save = CORO_SAVE_ALL;
		1173	coro->flags = CF_NEW;
1025		1174
1026	hv = newHV ();	1175	hv = newHV ();
1027	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1176	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1028	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1177	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1029		1178
1030	for (i = 1; i < items; i++)	1179	for (i = 1; i < items; i++)
1031	av_push (coro->args, newSVsv (ST (i)));	1180	av_push (coro->args, newSVsv (ST (i)));
1032
1033	/coro->mainstack = 0; //actual work is done inside transfer /
1034	/coro->stack = 0;/
1035	}	1181	}
1036	OUTPUT:	1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	save (SV *coro, int new_save = -1)
		1187	CODE:
		1188	RETVAL = api_save (coro, new_save);
		1189	OUTPUT:
1037	RETVAL	1190	RETVAL
1038		1191
1039	void	1192	void
1040	_set_stacklevel (...)	1193	_set_stacklevel (...)
1041	ALIAS:	1194	ALIAS:
1042	Coro::State::transfer = 1	1195	Coro::State::transfer = 1
1043	Coro::schedule = 2	1196	Coro::schedule = 2
1044	Coro::cede = 3	1197	Coro::cede = 3
1045	Coro::Cont::yield = 4	1198	Coro::cede_notself = 4
1046	CODE:	1199	CODE:
1047	{	1200	{
1048	struct transfer_args ta;	1201	struct transfer_args ta;
1049		1202
1050	switch (ix)	1203	switch (ix)
1051	{	1204	{
1052	case 0:	1205	case 0:
1053	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1206	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1054	ta.next = 0;	1207	ta.next = 0;
1055	ta.flags = TRANSFER_SET_STACKLEVEL;
1056	break;	1208	break;
1057		1209
1058	case 1:	1210	case 1:
1059	if (items != 3)	1211	if (items != 2)
1060	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1212	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1061		1213
1062	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1214	prepare_transfer (&ta, ST (0), ST (1));
1063	break;	1215	break;
1064		1216
1065	case 2:	1217	case 2:
1066	prepare_schedule (&ta);	1218	prepare_schedule (&ta);
1067	break;	1219	break;
…		…
1069	case 3:	1221	case 3:
1070	prepare_cede (&ta);	1222	prepare_cede (&ta);
1071	break;	1223	break;
1072		1224
1073	case 4:	1225	case 4:
1074	{	1226	if (!prepare_cede_notself (&ta))
1075	SV *yieldstack;	1227	XSRETURN_EMPTY;
1076	SV *sv;
1077	AV *defav = GvAV (PL_defgv);
1078		1228
1079	yieldstack = *hv_fetch (
1080	(HV *)SvRV (GvSV (coro_current)),
1081	"yieldstack", sizeof ("yieldstack") - 1,
1082	0
1083	);
1084
1085	/* set up @_ -- ugly */
1086	av_clear (defav);
1087	av_fill (defav, items - 1);
1088	while (items--)
1089	av_store (defav, items, SvREFCNT_inc (ST(items)));
1090
1091	sv = av_pop ((AV *)SvRV (yieldstack));
1092	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1093	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1094	ta.flags = 0;
1095	SvREFCNT_dec (sv);
1096	}
1097	break;	1229	break;
1098
1099	}	1230	}
1100		1231
		1232	BARRIER;
1101	TRANSFER (ta);	1233	TRANSFER (ta);
1102	}
1103		1234
1104	void	1235	if (GIMME_V != G_VOID && ta.next != ta.prev)
1105	_clone_state_from (SV dst, SV src)	1236	XSRETURN_YES;
		1237	}
		1238
		1239	bool
		1240	_destroy (SV *coro_sv)
1106	CODE:	1241	CODE:
1107	{	1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1108	struct coro *coro_src = SvSTATE (src);	1243	OUTPUT:
1109		1244	RETVAL
1110	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1111
1112	++coro_src->refcnt;
1113	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1114	}
1115
1116	void
1117	_nonlocal_goto (IV nextop)
1118	CODE:
1119	/* uuh, somebody will kill me again for this */
1120	PL_op->op_next = INT2PTR (OP *, nextop);
1121		1245
1122	void	1246	void
1123	_exit (code)	1247	_exit (code)
1124	int code	1248	int code
1125	PROTOTYPE: $	1249	PROTOTYPE: $
1126	CODE:	1250	CODE:
1127	_exit (code);	1251	_exit (code);
1128		1252
		1253	int
		1254	cctx_count ()
		1255	CODE:
		1256	RETVAL = cctx_count;
		1257	OUTPUT:
		1258	RETVAL
		1259
		1260	int
		1261	cctx_idle ()
		1262	CODE:
		1263	RETVAL = cctx_idle;
		1264	OUTPUT:
		1265	RETVAL
		1266
1129	MODULE = Coro::State PACKAGE = Coro	1267	MODULE = Coro::State PACKAGE = Coro
1130		1268
1131	BOOT:	1269	BOOT:
1132	{	1270	{
1133	int i;	1271	int i;
…		…
1139	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1277	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1140	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1278	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1141	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1279	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1142	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1280	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1143		1281
1144	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1282	coro_current = get_sv ("Coro::current", FALSE);
1145	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1283	SvREADONLY_on (coro_current);
1146		1284
1147	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1285	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1148	coro_ready[i] = newAV ();	1286	coro_ready[i] = newAV ();
1149		1287
1150	{	1288	{
1151	SV *sv = perl_get_sv("Coro::API", 1);	1289	SV *sv = perl_get_sv("Coro::API", 1);
1152		1290
1153	coroapi.schedule = api_schedule;	1291	coroapi.schedule = api_schedule;
		1292	coroapi.save = api_save;
1154	coroapi.cede = api_cede;	1293	coroapi.cede = api_cede;
		1294	coroapi.cede_notself = api_cede_notself;
1155	coroapi.ready = api_ready;	1295	coroapi.ready = api_ready;
		1296	coroapi.is_ready = api_is_ready;
1156	coroapi.nready = &coro_nready;	1297	coroapi.nready = &coro_nready;
1157	coroapi.current = coro_current;	1298	coroapi.current = coro_current;
1158		1299
1159	GCoroAPI = &coroapi;	1300	GCoroAPI = &coroapi;
1160	sv_setiv (sv, (IV)&coroapi);	1301	sv_setiv (sv, (IV)&coroapi);
1161	SvREADONLY_on (sv);	1302	SvREADONLY_on (sv);
1162	}	1303	}
1163	}	1304	}
		1305
		1306	void
		1307	_set_current (SV *current)
		1308	PROTOTYPE: $
		1309	CODE:
		1310	SvREFCNT_dec (SvRV (coro_current));
		1311	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1164		1312
1165	int	1313	int
1166	prio (Coro::State coro, int newprio = 0)	1314	prio (Coro::State coro, int newprio = 0)
1167	ALIAS:	1315	ALIAS:
1168	nice = 1	1316	nice = 1
…		…
1171	RETVAL = coro->prio;	1319	RETVAL = coro->prio;
1172		1320
1173	if (items > 1)	1321	if (items > 1)
1174	{	1322	{
1175	if (ix)	1323	if (ix)
1176	newprio += coro->prio;	1324	newprio = coro->prio - newprio;
1177		1325
1178	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1326	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1179	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1327	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1180		1328
1181	coro->prio = newprio;	1329	coro->prio = newprio;
1182	}	1330	}
1183	}	1331	}
		1332	OUTPUT:
		1333	RETVAL
1184		1334
1185	void	1335	SV *
1186	ready (SV *self)	1336	ready (SV *self)
1187	PROTOTYPE: $	1337	PROTOTYPE: $
1188	CODE:	1338	CODE:
1189	api_ready (self);	1339	RETVAL = boolSV (api_ready (self));
		1340	OUTPUT:
		1341	RETVAL
		1342
		1343	SV *
		1344	is_ready (SV *self)
		1345	PROTOTYPE: $
		1346	CODE:
		1347	RETVAL = boolSV (api_is_ready (self));
		1348	OUTPUT:
		1349	RETVAL
1190		1350
1191	int	1351	int
1192	nready (...)	1352	nready (...)
1193	PROTOTYPE:	1353	PROTOTYPE:
1194	CODE:	1354	CODE:
…		…
1200		1360
1201	SV *	1361	SV *
1202	_get_state ()	1362	_get_state ()
1203	CODE:	1363	CODE:
1204	{	1364	{
1205	struct {	1365	struct io_state *data;
1206	int errorno;
1207	int laststype;
1208	int laststatval;
1209	Stat_t statcache;
1210	} data;
1211		1366
		1367	RETVAL = newSV (sizeof (struct io_state));
		1368	data = (struct io_state *)SvPVX (RETVAL);
		1369	SvCUR_set (RETVAL, sizeof (struct io_state));
		1370	SvPOK_only (RETVAL);
		1371
1212	data.errorno = errno;	1372	data->errorno = errno;
1213	data.laststype = PL_laststype;	1373	data->laststype = PL_laststype;
1214	data.laststatval = PL_laststatval;	1374	data->laststatval = PL_laststatval;
1215	data.statcache = PL_statcache;	1375	data->statcache = PL_statcache;
1216
1217	RETVAL = newSVpvn ((char *)&data, sizeof data);
1218	}	1376	}
1219	OUTPUT:	1377	OUTPUT:
1220	RETVAL	1378	RETVAL
1221		1379
1222	void	1380	void
1223	_set_state (char *data_)	1381	_set_state (char *data_)
1224	PROTOTYPE: $	1382	PROTOTYPE: $
1225	CODE:	1383	CODE:
1226	{	1384	{
1227	struct {	1385	struct io_state data = (void )data_;
1228	int errorno;
1229	int laststype;
1230	int laststatval;
1231	Stat_t statcache;
1232	} data = (void )data_;
1233		1386
1234	errno = data->errorno;	1387	errno = data->errorno;
1235	PL_laststype = data->laststype;	1388	PL_laststype = data->laststype;
1236	PL_laststatval = data->laststatval;	1389	PL_laststatval = data->laststatval;
1237	PL_statcache = data->statcache;	1390	PL_statcache = data->statcache;
1238	}	1391	}
		1392

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Comparing Coro/Coro/State.xs (file contents): Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs. Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs.
Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC