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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 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 *top_env;
		144	coro_context cctx;
		145
		146	int inuse;
		147
		148	#if USE_VALGRIND
		149	int valgrind_id;
		150	#endif
		151	} coro_cctx;
		152
		153	enum {
		154	CF_RUNNING = 0x0001, /* coroutine is running */
		155	CF_READY = 0x0002, /* coroutine is ready */
		156	CF_NEW = 0x0004, /* ahs never been switched to */
		157	};
		158
		159	/* this is a structure representing a perl-level coroutine */
104	struct coro {	160	struct coro {
105	/* the top-level JMPENV for each coroutine, needed to catch dies. */	161	/* the c coroutine allocated to this perl coroutine, if any */
106	JMPENV start_env;	162	coro_cctx *cctx;
107
108	/* the optional C context */
109	coro_stack *stack;
110	void *cursp;
111	int gencnt;
112
113	/* optionally saved, might be zero */
114	AV *defav;
115	SV *defsv;
116	SV *errsv;
117
118	/* saved global state not related to stacks */
119	U8 dowarn;
120	I32 in_eval;
121
122	/* the stacks and related info (callchain etc..) */
123	PERL_SI *curstackinfo;
124	AV *curstack;
125	AV *mainstack;
126	SV **stack_sp;
127	OP *op;
128	SV **curpad;
129	AV *comppad;
130	CV *compcv;
131	SV **stack_base;
132	SV **stack_max;
133	SV **tmps_stack;
134	I32 tmps_floor;
135	I32 tmps_ix;
136	I32 tmps_max;
137	I32 *markstack;
138	I32 *markstack_ptr;
139	I32 *markstack_max;
140	I32 *scopestack;
141	I32 scopestack_ix;
142	I32 scopestack_max;
143	ANY *savestack;
144	I32 savestack_ix;
145	I32 savestack_max;
146	OP **retstack;
147	I32 retstack_ix;
148	I32 retstack_max;
149	PMOP *curpm;
150	COP *curcop;
151	JMPENV *top_env;
152		163
153	/* data associated with this coroutine (initial args) */	164	/* data associated with this coroutine (initial args) */
154	AV *args;	165	AV *args;
		166	int refcnt;
		167	int save; /* CORO_SAVE flags */
		168	int flags; /* CF_ flags */
		169
		170	/* optionally saved, might be zero */
		171	AV defav; / @_ */
		172	SV defsv; / $_ */
		173	SV errsv; / $@ */
		174	SV irssv; / $/ */
		175	SV irssv_sv; / real $/ cache */
		176
		177	#define VAR(name,type) type name;
		178	# include "state.h"
		179	#undef VAR
		180
		181	/* coro process data */
		182	int prio;
155	};	183	};
156		184
157	typedef struct coro *Coro__State;	185	typedef struct coro *Coro__State;
158	typedef struct coro *Coro__State_or_hashref;	186	typedef struct coro *Coro__State_or_hashref;
159		187
160	static AV *	188	static AV *
161	coro_clone_padlist (pTHX_ CV *cv)	189	coro_clone_padlist (CV *cv)
162	{	190	{
163	AV *padlist = CvPADLIST (cv);	191	AV *padlist = CvPADLIST (cv);
164	AV newpadlist, newpad;	192	AV newpadlist, newpad;
165		193
166	newpadlist = newAV ();	194	newpadlist = newAV ();
167	AvREAL_off (newpadlist);	195	AvREAL_off (newpadlist);
168	#if PERL_VERSION < 9	196	#if PERL_VERSION_ATLEAST (5,9,0)
		197	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		198	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	199	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
170	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
172	#endif	200	#endif
173	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	201	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
174	--AvFILLp (padlist);	202	--AvFILLp (padlist);
175		203
176	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	204	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
178		206
179	return newpadlist;	207	return newpadlist;
180	}	208	}
181		209
182	static void	210	static void
183	free_padlist (pTHX_ AV *padlist)	211	free_padlist (AV *padlist)
184	{	212	{
185	/* may be during global destruction */	213	/* may be during global destruction */
186	if (SvREFCNT (padlist))	214	if (SvREFCNT (padlist))
187	{	215	{
188	I32 i = AvFILLp (padlist);	216	I32 i = AvFILLp (padlist);
…		…
209	AV *padlist;	237	AV *padlist;
210	AV av = (AV )mg->mg_obj;	238	AV av = (AV )mg->mg_obj;
211		239
212	/* casting is fun. */	240	/* casting is fun. */
213	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	241	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
214	free_padlist (aTHX_ padlist);	242	free_padlist (padlist);
215		243
216	SvREFCNT_dec (av);	244	SvREFCNT_dec (av);
217		245
218	return 0;	246	return 0;
219	}	247	}
220		248
221	#define PERL_MAGIC_coro PERL_MAGIC_ext	249	#define PERL_MAGIC_coro PERL_MAGIC_ext
222		250
223	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	251	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
224		252
		253	#define CORO_MAGIC(cv) \
		254	SvMAGIC (cv) \
		255	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		256	? SvMAGIC (cv) \
		257	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		258	: 0
		259
225	/* the next two functions merely cache the padlists */	260	/* the next two functions merely cache the padlists */
226	static void	261	static void
227	get_padlist (pTHX_ CV *cv)	262	get_padlist (CV *cv)
228	{	263	{
229	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	264	MAGIC *mg = CORO_MAGIC (cv);
		265	AV *av;
230		266
231	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	267	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
232	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	268	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
233	else	269	else
234	{	270	{
235	#if 0	271	#if PREFER_PERL_FUNCTIONS
236	/* this should work - but it doesn't :( */	272	/* this is probably cleaner, but also slower? */
237	CV *cp = Perl_cv_clone (aTHX_ cv);	273	CV *cp = Perl_cv_clone (cv);
238	CvPADLIST (cv) = CvPADLIST (cp);	274	CvPADLIST (cv) = CvPADLIST (cp);
239	CvPADLIST (cp) = 0;	275	CvPADLIST (cp) = 0;
240	SvREFCNT_dec (cp);	276	SvREFCNT_dec (cp);
241	#else	277	#else
242	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	278	CvPADLIST (cv) = coro_clone_padlist (cv);
243	#endif	279	#endif
244	}	280	}
245	}	281	}
246		282
247	static void	283	static void
248	put_padlist (pTHX_ CV *cv)	284	put_padlist (CV *cv)
249	{	285	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	286	MAGIC *mg = CORO_MAGIC (cv);
		287	AV *av;
251		288
252	if (!mg)	289	if (!mg)
253	{	290	{
254	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	291	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
255	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	292	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
256	mg->mg_virtual = &vtbl_coro;	293	mg->mg_virtual = &vtbl_coro;
257	mg->mg_obj = (SV *)newAV ();	294	mg->mg_obj = (SV *)newAV ();
258	}	295	}
259		296
260	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	297	av = (AV *)mg->mg_obj;
		298
		299	if (AvFILLp (av) >= AvMAX (av))
		300	av_extend (av, AvMAX (av) + 1);
		301
		302	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
261	}	303	}
262		304
263	#define SB do {	305	#define SB do {
264	#define SE } while (0)	306	#define SE } while (0)
265		307
266	#define LOAD(state) load_state(aTHX_ (state));
267	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
268
269	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
270		309
271	static void	310	static void
272	load_state(pTHX_ Coro__State c)	311	load_perl (Coro__State c)
273	{	312	{
274	PL_dowarn = c->dowarn;	313	#define VAR(name,type) PL_ ## name = c->name;
275	PL_in_eval = c->in_eval;	314	# include "state.h"
276		315	#undef VAR
277	PL_curstackinfo = c->curstackinfo;
278	PL_curstack = c->curstack;
279	PL_mainstack = c->mainstack;
280	PL_stack_sp = c->stack_sp;
281	PL_op = c->op;
282	PL_curpad = c->curpad;
283	PL_comppad = c->comppad;
284	PL_compcv = c->compcv;
285	PL_stack_base = c->stack_base;
286	PL_stack_max = c->stack_max;
287	PL_tmps_stack = c->tmps_stack;
288	PL_tmps_floor = c->tmps_floor;
289	PL_tmps_ix = c->tmps_ix;
290	PL_tmps_max = c->tmps_max;
291	PL_markstack = c->markstack;
292	PL_markstack_ptr = c->markstack_ptr;
293	PL_markstack_max = c->markstack_max;
294	PL_scopestack = c->scopestack;
295	PL_scopestack_ix = c->scopestack_ix;
296	PL_scopestack_max = c->scopestack_max;
297	PL_savestack = c->savestack;
298	PL_savestack_ix = c->savestack_ix;
299	PL_savestack_max = c->savestack_max;
300	#if PERL_VERSION < 9
301	PL_retstack = c->retstack;
302	PL_retstack_ix = c->retstack_ix;
303	PL_retstack_max = c->retstack_max;
304	#endif
305	PL_curpm = c->curpm;
306	PL_curcop = c->curcop;
307	PL_top_env = c->top_env;
308		316
309	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
310	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
311	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		320	if (c->irssv)
		321	{
		322	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		323	SvREFCNT_dec (c->irssv);
		324	else
		325	{
		326	REPLACE_SV (PL_rs, c->irssv);
		327	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		328	sv_setsv (c->irssv_sv, PL_rs);
		329	}
		330	}
312		331
313	{	332	{
314	dSP;	333	dSP;
315	CV *cv;	334	CV *cv;
316		335
317	/* now do the ugly restore mess */	336	/* now do the ugly restore mess */
318	while ((cv = (CV *)POPs))	337	while ((cv = (CV *)POPs))
319	{	338	{
320	AV padlist = (AV )POPs;
321
322	if (padlist)
323	{
324	put_padlist (aTHX_ cv); /* mark this padlist as available */	339	put_padlist (cv); /* mark this padlist as available */
325	CvPADLIST(cv) = padlist;	340	CvDEPTH (cv) = PTR2IV (POPs);
326	}	341	CvPADLIST (cv) = (AV *)POPs;
327
328	++CvDEPTH(cv);
329	}	342	}
330		343
331	PUTBACK;	344	PUTBACK;
332	}	345	}
333	}	346	}
334		347
335	static void	348	static void
336	save_state(pTHX_ Coro__State c, int flags)	349	save_perl (Coro__State c)
337	{	350	{
338	{	351	{
339	dSP;	352	dSP;
340	I32 cxix = cxstack_ix;	353	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	354	PERL_CONTEXT *ccstk = cxstack;
…		…
344	/*	357	/*
345	* the worst thing you can imagine happens first - we have to save	358	* the worst thing you can imagine happens first - we have to save
346	* (and reinitialize) all cv's in the whole callchain :(	359	* (and reinitialize) all cv's in the whole callchain :(
347	*/	360	*/
348		361
		362	EXTEND (SP, 3 + 1);
349	PUSHs (Nullsv);	363	PUSHs (Nullsv);
350	/* this loop was inspired by pp_caller */	364	/* this loop was inspired by pp_caller */
351	for (;;)	365	for (;;)
352	{	366	{
353	while (cxix >= 0)	367	while (cxix >= 0)
354	{	368	{
355	PERL_CONTEXT *cx = &ccstk[cxix--];	369	PERL_CONTEXT *cx = &ccstk[cxix--];
356		370
357	if (CxTYPE(cx) == CXt_SUB)	371	if (CxTYPE (cx) == CXt_SUB)
358	{	372	{
359	CV *cv = cx->blk_sub.cv;	373	CV *cv = cx->blk_sub.cv;
		374
360	if (CvDEPTH(cv))	375	if (CvDEPTH (cv))
361	{	376	{
362	EXTEND (SP, CvDEPTH(cv)*2);	377	EXTEND (SP, 3);
363
364	while (--CvDEPTH(cv))
365	{
366	/* this tells the restore code to increment CvDEPTH */
367	PUSHs (Nullsv);
368	PUSHs ((SV *)cv);
369	}
370
371	PUSHs ((SV *)CvPADLIST(cv));	378	PUSHs ((SV *)CvPADLIST (cv));
		379	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
372	PUSHs ((SV *)cv);	380	PUSHs ((SV *)cv);
373		381
		382	CvDEPTH (cv) = 0;
374	get_padlist (aTHX_ cv);	383	get_padlist (cv);
375	}	384	}
376	}	385	}
377	#ifdef CXt_FORMAT
378	else if (CxTYPE(cx) == CXt_FORMAT)
379	{
380	/* I never used formats, so how should I know how these are implemented? */
381	/* my bold guess is as a simple, plain sub... */
382	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
383	}
384	#endif
385	}	386	}
386		387
387	if (top_si->si_type == PERLSI_MAIN)	388	if (top_si->si_type == PERLSI_MAIN)
388	break;	389	break;
389		390
…		…
393	}	394	}
394		395
395	PUTBACK;	396	PUTBACK;
396	}	397	}
397		398
398	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	399	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
399	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	400	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
400	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	401	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		402	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
401		403
402	c->dowarn = PL_dowarn;	404	#define VAR(name,type)c->name = PL_ ## name;
403	c->in_eval = PL_in_eval;	405	# include "state.h"
404		406	#undef VAR
405	c->curstackinfo = PL_curstackinfo;
406	c->curstack = PL_curstack;
407	c->mainstack = PL_mainstack;
408	c->stack_sp = PL_stack_sp;
409	c->op = PL_op;
410	c->curpad = PL_curpad;
411	c->comppad = PL_comppad;
412	c->compcv = PL_compcv;
413	c->stack_base = PL_stack_base;
414	c->stack_max = PL_stack_max;
415	c->tmps_stack = PL_tmps_stack;
416	c->tmps_floor = PL_tmps_floor;
417	c->tmps_ix = PL_tmps_ix;
418	c->tmps_max = PL_tmps_max;
419	c->markstack = PL_markstack;
420	c->markstack_ptr = PL_markstack_ptr;
421	c->markstack_max = PL_markstack_max;
422	c->scopestack = PL_scopestack;
423	c->scopestack_ix = PL_scopestack_ix;
424	c->scopestack_max = PL_scopestack_max;
425	c->savestack = PL_savestack;
426	c->savestack_ix = PL_savestack_ix;
427	c->savestack_max = PL_savestack_max;
428	#if PERL_VERSION < 9
429	c->retstack = PL_retstack;
430	c->retstack_ix = PL_retstack_ix;
431	c->retstack_max = PL_retstack_max;
432	#endif
433	c->curpm = PL_curpm;
434	c->curcop = PL_curcop;
435	c->top_env = PL_top_env;
436	}	407	}
437		408
438	/*	409	/*
439	* allocate various perl stacks. This is an exact copy	410	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	411	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	412	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	413	* not usually need a lot of stackspace.
443	*/	414	*/
		415	#if PREFER_PERL_FUNCTIONS
		416	# define coro_init_stacks init_stacks
		417	#else
444	static void	418	static void
445	coro_init_stacks (pTHX)	419	coro_init_stacks ()
446	{	420	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	421	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
450	PL_curstackinfo->si_type = PERLSI_MAIN;	422	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	423	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	424	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		425
454	PL_stack_base = AvARRAY(PL_curstack);	426	PL_stack_base = AvARRAY(PL_curstack);
455	PL_stack_sp = PL_stack_base;	427	PL_stack_sp = PL_stack_base;
456	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	428	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457		429
458	New(50,PL_tmps_stack,96,SV*);	430	New(50,PL_tmps_stack,128,SV*);
459	PL_tmps_floor = -1;	431	PL_tmps_floor = -1;
460	PL_tmps_ix = -1;	432	PL_tmps_ix = -1;
461	PL_tmps_max = 96;	433	PL_tmps_max = 128;
462		434
463	New(54,PL_markstack,16,I32);	435	New(54,PL_markstack,32,I32);
464	PL_markstack_ptr = PL_markstack;	436	PL_markstack_ptr = PL_markstack;
465	PL_markstack_max = PL_markstack + 16;	437	PL_markstack_max = PL_markstack + 32;
466		438
467	#ifdef SET_MARK_OFFSET	439	#ifdef SET_MARK_OFFSET
468	SET_MARK_OFFSET;	440	SET_MARK_OFFSET;
469	#endif	441	#endif
470		442
471	New(54,PL_scopestack,16,I32);	443	New(54,PL_scopestack,32,I32);
472	PL_scopestack_ix = 0;	444	PL_scopestack_ix = 0;
473	PL_scopestack_max = 16;	445	PL_scopestack_max = 32;
474		446
475	New(54,PL_savestack,96,ANY);	447	New(54,PL_savestack,64,ANY);
476	PL_savestack_ix = 0;	448	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	449	PL_savestack_max = 64;
478		450
479	#if PERL_VERSION < 9	451	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	452	New(54,PL_retstack,16,OP*);
481	PL_retstack_ix = 0;	453	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	454	PL_retstack_max = 16;
483	#endif	455	#endif
484
485	UNLOCK;
486	}	456	}
		457	#endif
487		458
488	/*	459	/*
489	* destroy the stacks, the callchain etc...	460	* destroy the stacks, the callchain etc...
490	*/	461	*/
491	static void	462	static void
492	destroy_stacks(pTHX)	463	coro_destroy_stacks ()
493	{	464	{
494	if (!IN_DESTRUCT)	465	if (!IN_DESTRUCT)
495	{	466	{
496	/* is this ugly, I ask? */	467	/* restore all saved variables and stuff */
497	LEAVE_SCOPE (0);	468	LEAVE_SCOPE (0);
		469	assert (PL_tmps_floor == -1);
498		470
499	/* sure it is, but more important: is it correct?? :/ */	471	/* free all temporaries */
500	FREETMPS;	472	FREETMPS;
		473	assert (PL_tmps_ix == -1);
501		474
502	/POPSTACK_TO (PL_mainstack);//D//use/	475	POPSTACK_TO (PL_mainstack);
503	}	476	}
504		477
505	while (PL_curstackinfo->si_next)	478	while (PL_curstackinfo->si_next)
506	PL_curstackinfo = PL_curstackinfo->si_next;	479	PL_curstackinfo = PL_curstackinfo->si_next;
507		480
508	while (PL_curstackinfo)	481	while (PL_curstackinfo)
509	{	482	{
510	PERL_SI *p = PL_curstackinfo->si_prev;	483	PERL_SI *p = PL_curstackinfo->si_prev;
511		484
512	{ /D//remove/
513	dSP;
514	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
515	PUTBACK; /* possibly superfluous */
516	}
517
518	if (!IN_DESTRUCT)	485	if (!IN_DESTRUCT)
519	{
520	dounwind (-1);/D//remove/
521	SvREFCNT_dec (PL_curstackinfo->si_stack);	486	SvREFCNT_dec (PL_curstackinfo->si_stack);
522	}
523		487
524	Safefree (PL_curstackinfo->si_cxstack);	488	Safefree (PL_curstackinfo->si_cxstack);
525	Safefree (PL_curstackinfo);	489	Safefree (PL_curstackinfo);
526	PL_curstackinfo = p;	490	PL_curstackinfo = p;
527	}	491	}
528		492
529	Safefree (PL_tmps_stack);	493	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	494	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	495	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	496	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	497	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	498	Safefree (PL_retstack);
535	#endif	499	#endif
536	}	500	}
537		501
538	static void	502	static void
539	allocate_stack (Coro__State ctx, int alloc)	503	setup_coro (struct coro *coro)
540	{
541	coro_stack *stack;
542
543	New (0, stack, 1, coro_stack);
544
545	stack->refcnt = 1;
546	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;
548
549	if (alloc)
550	{
551	#if HAVE_MMAP
552	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
553	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
554	if (stack->sptr != (void *)-1)
555	{
556	# if STACKGUARD
557	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
558	# endif
559	}
560	else
561	#endif
562	{
563	stack->ssize = - (STACKSIZE * (long)sizeof (long));
564	New (0, stack->sptr, STACKSIZE, long);
565	}
566	}
567	else
568	stack->sptr = 0;
569
570	ctx->stack = stack;
571	}
572
573	static void
574	deallocate_stack (Coro__State ctx)
575	{
576	coro_stack *stack = ctx->stack;
577
578	ctx->stack = 0;
579
580	if (stack)
581	{
582	if (!--stack->refcnt)
583	{
584	#ifdef HAVE_MMAP
585	if (stack->ssize > 0 && stack->sptr)
586	munmap (stack->sptr, stack->ssize);
587	else
588	#endif
589	Safefree (stack->sptr);
590
591	Safefree (stack);
592	}
593	else if (ctx->gencnt == stack->gencnt)
594	--stack->usecnt;
595	}
596	}
597
598	static void
599	setup_coro (void *arg)
600	{	504	{
601	/*	505	/*
602	* emulate part of the perl startup here.	506	* emulate part of the perl startup here.
603	*/	507	*/
604	dTHX;	508
		509	coro_init_stacks ();
		510
		511	PL_curcop = &PL_compiling;
		512	PL_in_eval = EVAL_NULL;
		513	PL_curpm = 0;
		514	PL_localizing = 0;
		515	PL_dirty = 0;
		516	PL_restartop = 0;
		517
		518	{
		519	dSP;
		520	LOGOP myop;
		521
		522	SvREFCNT_dec (GvAV (PL_defgv));
		523	GvAV (PL_defgv) = coro->args; coro->args = 0;
		524
		525	Zero (&myop, 1, LOGOP);
		526	myop.op_next = Nullop;
		527	myop.op_flags = OPf_WANT_VOID;
		528
		529	PUSHMARK (SP);
		530	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		531	PUTBACK;
		532	PL_op = (OP *)&myop;
		533	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		534	SPAGAIN;
		535	}
		536
		537	ENTER; /* necessary e.g. for dounwind */
		538	}
		539
		540	static void
		541	free_coro_mortal ()
		542	{
		543	if (coro_mortal)
		544	{
		545	SvREFCNT_dec (coro_mortal);
		546	coro_mortal = 0;
		547	}
		548	}
		549
		550	/* inject a fake call to Coro::State::_cctx_init into the execution */
		551	static void NOINLINE
		552	prepare_cctx (coro_cctx *cctx)
		553	{
605	dSP;	554	dSP;
606	Coro__State ctx = (Coro__State)arg;	555	LOGOP myop;
607	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
608		556
609	coro_init_stacks (aTHX);	557	Zero (&myop, 1, LOGOP);
610	/PL_curcop = 0;/	558	myop.op_next = PL_op;
611	/PL_in_eval = PL_in_eval;/ /* inherit */	559	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
612	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
614		560
		561	PUSHMARK (SP);
		562	EXTEND (SP, 2);
		563	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		564	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		565	PUTBACK;
		566	PL_op = (OP *)&myop;
		567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
615	SPAGAIN;	568	SPAGAIN;
616
617	if (ctx->stack)
618	{
619	ctx->cursp = 0;
620
621	PUSHMARK(SP);
622	PUTBACK;
623	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
624
625	if (SvTRUE (ERRSV))
626	croak (NULL);
627	else
628	croak ("FATAL: CCTXT coroutine returned!");
629	}
630	else
631	{
632	UNOP myop;
633
634	PL_op = (OP *)&myop;
635
636	Zero(&myop, 1, UNOP);
637	myop.op_next = Nullop;
638	myop.op_flags = OPf_WANT_VOID;
639
640	PUSHMARK(SP);
641	XPUSHs (sub_init);
642	/*
643	* the next line is slightly wrong, as PL_op->op_next
644	* is actually being executed so we skip the first op.
645	* that doesn't matter, though, since it is only
646	* pp_nextstate and we never return...
647	* ah yes, and I don't care anyways ;)
648	*/
649	PUTBACK;
650	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
651	SPAGAIN;
652
653	ENTER; /* necessary e.g. for dounwind */
654	}
655	}	569	}
656		570
657	static void	571	static void
658	continue_coro (void *arg)	572	coro_run (void *arg)
659	{	573	{
		574	/* coro_run is the alternative tail of transfer(), so unlock here. */
		575	UNLOCK;
		576
660	/*	577	/*
661	* this is a _very_ stripped down perl interpreter ;)	578	* this is a _very_ stripped down perl interpreter ;)
662	*/	579	*/
663	dTHX;
664	Coro__State ctx = (Coro__State)arg;
665
666	PL_top_env = &ctx->start_env;	580	PL_top_env = &PL_start_env;
667		581
668	ctx->cursp = 0;	582	/* inject call to cctx_init */
669	PL_op = PL_op->op_next;	583	prepare_cctx ((coro_cctx *)arg);
670	CALLRUNOPS(aTHX);
671		584
		585	/* somebody will hit me for both perl_run and PL_restartop */
		586	PL_restartop = PL_op;
		587	perl_run (PL_curinterp);
		588
		589	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
672	abort ();	590	abort ();
673	}	591	}
674		592
		593	static coro_cctx *
		594	cctx_new ()
		595	{
		596	coro_cctx *cctx;
		597
		598	++cctx_count;
		599
		600	Newz (0, cctx, 1, coro_cctx);
		601
		602	#if HAVE_MMAP
		603
		604	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		605	/* mmap supposedly does allocate-on-write for us */
		606	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		607
		608	if (cctx->sptr == (void *)-1)
		609	{
		610	perror ("FATAL: unable to mmap stack for coroutine");
		611	_exit (EXIT_FAILURE);
		612	}
		613
		614	# if STACKGUARD
		615	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		616	# endif
		617
		618	#else
		619
		620	cctx->ssize = STACKSIZE * (long)sizeof (long);
		621	New (0, cctx->sptr, STACKSIZE, long);
		622
		623	if (!cctx->sptr)
		624	{
		625	perror ("FATAL: unable to malloc stack for coroutine");
		626	_exit (EXIT_FAILURE);
		627	}
		628
		629	#endif
		630
		631	#if USE_VALGRIND
		632	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		633	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		634	cctx->ssize + (char *)cctx->sptr
		635	);
		636	#endif
		637
		638	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		639
		640	return cctx;
		641	}
		642
675	static void	643	static void
		644	cctx_destroy (coro_cctx *cctx)
		645	{
		646	if (!cctx)
		647	return;
		648
		649	--cctx_count;
		650
		651	#if USE_VALGRIND
		652	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		653	#endif
		654
		655	#if HAVE_MMAP
		656	munmap (cctx->sptr, cctx->ssize);
		657	#else
		658	Safefree (cctx->sptr);
		659	#endif
		660
		661	Safefree (cctx);
		662	}
		663
		664	static coro_cctx *
		665	cctx_get ()
		666	{
		667	coro_cctx *cctx;
		668
		669	if (cctx_first)
		670	{
		671	cctx = cctx_first;
		672	cctx_first = cctx->next;
		673	--cctx_idle;
		674	}
		675	else
		676	{
		677	cctx = cctx_new ();
		678	PL_op = PL_op->op_next;
		679	}
		680
		681	return cctx;
		682	}
		683
		684	static void
		685	cctx_put (coro_cctx *cctx)
		686	{
		687	/* free another cctx if overlimit */
		688	if (cctx_idle >= MAX_IDLE_CCTX)
		689	{
		690	coro_cctx *first = cctx_first;
		691	cctx_first = first->next;
		692	--cctx_idle;
		693
		694	assert (!first->inuse);
		695	cctx_destroy (first);
		696	}
		697
		698	++cctx_idle;
		699	cctx->next = cctx_first;
		700	cctx_first = cctx;
		701	}
		702
		703	/* never call directly, always through the coro_state_transfer global variable */
		704	static void NOINLINE
676	transfer (pTHX_ struct coro prev, struct coro next, int flags)	705	transfer (struct coro prev, struct coro next)
677	{	706	{
678	dSTACKLEVEL;	707	dSTACKLEVEL;
679		708
		709	/* sometimes transfer is only called to set idle_sp */
		710	if (!next)
		711	{
		712	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		713	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		714	}
680	if (prev != next)	715	else if (prev != next)
681	{	716	{
682	if (next->mainstack)	717	coro_cctx *prev__cctx;
		718
		719	if (prev->flags & CF_NEW)
683	{	720	{
684	LOCK;	721	/* create a new empty context */
685	SAVE (prev, flags);	722	Newz (0, prev->cctx, 1, coro_cctx);
686	LOAD (next);	723	prev->cctx->inuse = 1;
687	UNLOCK;	724	prev->flags &= ~CF_NEW;
688		725	prev->flags \|= CF_RUNNING;
689	/* mark this state as in-use */
690	next->mainstack = 0;
691	next->tmps_ix = -2;
692
693	/* stacklevel changed? if yes, grab the stack for us! */
694	if (flags & TRANSFER_SAVE_CCTXT)
695	{
696	if (!prev->stack)
697	allocate_stack (prev, 0);
698	else if (prev->cursp != stacklevel
699	&& prev->stack->usecnt > 1)
700	{
701	prev->gencnt = ++prev->stack->gencnt;
702	prev->stack->usecnt = 1;
703	}
704
705	/* has our stack been invalidated? */
706	if (next->stack && next->stack->gencnt != next->gencnt)
707	{
708	deallocate_stack (next);
709	allocate_stack (next, 1);
710	coro_create (&(next->stack->cctx),
711	continue_coro, (void *)next,
712	next->stack->sptr, labs (next->stack->ssize));
713	}
714
715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
716	prev->cursp = stacklevel;
717	/* don't add any code here */
718	}
719	else
720	next->cursp = stacklevel;
721	}	726	}
722	else if (next->tmps_ix == -2)	727
723	croak ("tried to transfer to running coroutine");	728	/TODO: must not croak here /
		729	if (!prev->flags & CF_RUNNING)
		730	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		731
		732	if (next->flags & CF_RUNNING)
		733	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		734
		735	prev->flags &= ~CF_RUNNING;
		736	next->flags \|= CF_RUNNING;
		737
		738	LOCK;
		739
		740	if (next->flags & CF_NEW)
		741	{
		742	/* need to start coroutine */
		743	next->flags &= ~CF_NEW;
		744	/* first get rid of the old state */
		745	save_perl (prev);
		746	/* setup coroutine call */
		747	setup_coro (next);
		748	/* need a new stack */
		749	assert (!next->cctx);
		750	}
724	else	751	else
725	{	752	{
726	LOCK;	753	/* coroutine already started */
727	SAVE (prev, -1); /* first get rid of the old state */	754	save_perl (prev);
728	UNLOCK;	755	load_perl (next);
729
730	if (flags & TRANSFER_SAVE_CCTXT)
731	{
732	if (!prev->stack)
733	allocate_stack (prev, 0);
734
735	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
736	{
737	PL_top_env = &next->start_env;
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	}	756	}
765	}
766		757
767	LOCK;	758	prev__cctx = prev->cctx;
768	if (coro_mortal)	759
769	{	760	/* possibly "free" the cctx */
770	SvREFCNT_dec (coro_mortal);	761	if (prev__cctx->idle_sp == STACKLEVEL)
		762	{
		763	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		764	assert (PL_top_env == prev__cctx->top_env);
		765
		766	prev->cctx = 0;
		767
		768	cctx_put (prev__cctx);
		769	prev__cctx->inuse = 0;
		770	}
		771
		772	if (!next->cctx)
		773	{
		774	next->cctx = cctx_get ();
		775	assert (!next->cctx->inuse);
		776	next->cctx->inuse = 1;
		777	}
		778
		779	if (prev__cctx != next->cctx)
		780	{
		781	prev__cctx->top_env = PL_top_env;
		782	PL_top_env = next->cctx->top_env;
		783	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		784	}
		785
771	coro_mortal = 0;	786	free_coro_mortal ();
772	}	787
773	UNLOCK;	788	UNLOCK;
		789	}
774	}	790	}
775		791
776	#define SV_CORO(sv,func) \	792	struct transfer_args
777	do { \	793	{
778	if (SvROK (sv)) \	794	struct coro prev, next;
779	sv = SvRV (sv); \	795	};
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		796
797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
798		798
		799	static void
		800	coro_state_destroy (struct coro *coro)
		801	{
		802	if (coro->refcnt--)
		803	return;
		804
		805	if (coro->mainstack && coro->mainstack != main_mainstack)
		806	{
		807	struct coro temp;
		808	Zero (&temp, 1, struct coro);
		809	temp.save = CORO_SAVE_ALL;
		810
		811	if (coro->flags & CF_RUNNING)
		812	croak ("FATAL: tried to destroy currently running coroutine");
		813
		814	save_perl (&temp);
		815	load_perl (coro);
		816
		817	coro_destroy_stacks ();
		818
		819	load_perl (&temp); /* this will get rid of defsv etc.. */
		820
		821	coro->mainstack = 0;
		822	}
		823
		824	cctx_destroy (coro->cctx);
		825	SvREFCNT_dec (coro->args);
		826	Safefree (coro);
		827	}
		828
799	static void	829	static int
		830	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		831	{
		832	struct coro coro = (struct coro )mg->mg_ptr;
		833	mg->mg_ptr = 0;
		834
		835	coro_state_destroy (coro);
		836
		837	return 0;
		838	}
		839
		840	static int
		841	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		842	{
		843	struct coro coro = (struct coro )mg->mg_ptr;
		844
		845	++coro->refcnt;
		846
		847	return 0;
		848	}
		849
		850	static MGVTBL coro_state_vtbl = {
		851	0, 0, 0, 0,
		852	coro_state_clear,
		853	0,
		854	#ifdef MGf_DUP
		855	coro_state_dup,
		856	#else
		857	# define MGf_DUP 0
		858	#endif
		859	};
		860
		861	static struct coro *
		862	SvSTATE (SV *coro)
		863	{
		864	HV *stash;
		865	MAGIC *mg;
		866
		867	if (SvROK (coro))
		868	coro = SvRV (coro);
		869
		870	stash = SvSTASH (coro);
		871	if (stash != coro_stash && stash != coro_state_stash)
		872	{
		873	/* very slow, but rare, check */
		874	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		875	croak ("Coro::State object required");
		876	}
		877
		878	mg = SvMAGIC (coro);
		879	assert (mg->mg_type == PERL_MAGIC_ext);
		880	return (struct coro *)mg->mg_ptr;
		881	}
		882
		883	static void
		884	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		885	{
		886	ta->prev = SvSTATE (prev_sv);
		887	ta->next = SvSTATE (next_sv);
		888	}
		889
		890	static void
800	api_transfer(pTHX_ SV prev, SV next, int flags)	891	api_transfer (SV prev_sv, SV next_sv)
801	{	892	{
802	SV_CORO (prev, "Coro::transfer");	893	struct transfer_args ta;
803	SV_CORO (next, "Coro::transfer");
804		894
805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	895	prepare_transfer (&ta, prev_sv, next_sv);
		896	TRANSFER (ta);
		897	}
		898
		899	static int
		900	api_save (SV *coro_sv, int new_save)
		901	{
		902	struct coro *coro = SvSTATE (coro_sv);
		903	int old_save = coro->save;
		904
		905	if (new_save >= 0)
		906	coro->save = new_save;
		907
		908	return old_save;
806	}	909	}
807		910
808	/ Coro ******************************************************************/	911	/ Coro ******************************************************************/
809		912
810	#define PRIO_MAX 3	913	#define PRIO_MAX 3
…		…
813	#define PRIO_LOW -1	916	#define PRIO_LOW -1
814	#define PRIO_IDLE -3	917	#define PRIO_IDLE -3
815	#define PRIO_MIN -4	918	#define PRIO_MIN -4
816		919
817	/* for Coro.pm */	920	/* for Coro.pm */
818	static GV coro_current, coro_idle;	921	static SV *coro_current;
819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	922	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
820	static int coro_nready;	923	static int coro_nready;
821		924
822	static void	925	static void
823	coro_enq (pTHX_ SV *sv)	926	coro_enq (SV *coro_sv)
824	{	927	{
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);	928	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
839	coro_nready++;	929	coro_nready++;
840	}	930	}
841		931
842	static SV *	932	static SV *
843	coro_deq (pTHX_ int min_prio)	933	coro_deq (int min_prio)
844	{	934	{
845	int prio = PRIO_MAX - PRIO_MIN;	935	int prio = PRIO_MAX - PRIO_MIN;
846		936
847	min_prio -= PRIO_MIN;	937	min_prio -= PRIO_MIN;
848	if (min_prio < 0)	938	if (min_prio < 0)
849	min_prio = 0;	939	min_prio = 0;
850		940
851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	941	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
852	if (av_len (coro_ready[prio]) >= 0)	942	if (AvFILLp (coro_ready [prio]) >= 0)
853	{	943	{
854	coro_nready--;	944	coro_nready--;
855	return av_shift (coro_ready[prio]);	945	return av_shift (coro_ready [prio]);
856	}	946	}
857		947
858	return 0;	948	return 0;
859	}	949	}
860		950
861	static void	951	static int
862	api_ready (SV *coro)	952	api_ready (SV *coro_sv)
863	{	953	{
864	dTHX;	954	struct coro *coro;
865		955
866	if (SvROK (coro))	956	if (SvROK (coro_sv))
867	coro = SvRV (coro);	957	coro_sv = SvRV (coro_sv);
		958
		959	coro = SvSTATE (coro_sv);
		960
		961	if (coro->flags & CF_READY)
		962	return 0;
		963
		964	coro->flags \|= CF_READY;
868		965
869	LOCK;	966	LOCK;
870	coro_enq (aTHX_ SvREFCNT_inc (coro));	967	coro_enq (SvREFCNT_inc (coro_sv));
871	UNLOCK;	968	UNLOCK;
		969
		970	return 1;
		971	}
		972
		973	static int
		974	api_is_ready (SV *coro_sv)
		975	{
		976	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		977	}
		978
		979	static void
		980	prepare_schedule (struct transfer_args *ta)
		981	{
		982	SV prev, next;
		983
		984	for (;;)
		985	{
		986	LOCK;
		987	next = coro_deq (PRIO_MIN);
		988	UNLOCK;
		989
		990	if (next)
		991	break;
		992
		993	{
		994	dSP;
		995
		996	ENTER;
		997	SAVETMPS;
		998
		999	PUSHMARK (SP);
		1000	PUTBACK;
		1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1002
		1003	FREETMPS;
		1004	LEAVE;
		1005	}
		1006	}
		1007
		1008	prev = SvRV (coro_current);
		1009	SvRV_set (coro_current, next);
		1010
		1011	/* free this only after the transfer */
		1012	LOCK;
		1013	free_coro_mortal ();
		1014	UNLOCK;
		1015	coro_mortal = prev;
		1016
		1017	assert (!SvROK(prev));//D
		1018	assert (!SvROK(next));//D
		1019
		1020	ta->prev = SvSTATE (prev);
		1021	ta->next = SvSTATE (next);
		1022
		1023	assert (ta->next->flags & CF_READY);
		1024	ta->next->flags &= ~CF_READY;
		1025	}
		1026
		1027	static void
		1028	prepare_cede (struct transfer_args *ta)
		1029	{
		1030	api_ready (coro_current);
		1031	prepare_schedule (ta);
		1032	}
		1033
		1034	static int
		1035	prepare_cede_notself (struct transfer_args *ta)
		1036	{
		1037	if (coro_nready)
		1038	{
		1039	SV *prev = SvRV (coro_current);
		1040	prepare_schedule (ta);
		1041	api_ready (prev);
		1042	return 1;
		1043	}
		1044	else
		1045	return 0;
872	}	1046	}
873		1047
874	static void	1048	static void
875	api_schedule (void)	1049	api_schedule (void)
876	{	1050	{
877	dTHX;	1051	struct transfer_args ta;
878		1052
879	SV prev, next;	1053	prepare_schedule (&ta);
880		1054	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	}	1055	}
902		1056
903	static void	1057	static int
904	api_cede (void)	1058	api_cede (void)
905	{	1059	{
906	dTHX;	1060	struct transfer_args ta;
907		1061
908	LOCK;	1062	prepare_cede (&ta);
909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
910	UNLOCK;
911		1063
912	api_schedule ();	1064	if (ta.prev != ta.next)
		1065	{
		1066	TRANSFER (ta);
		1067	return 1;
		1068	}
		1069	else
		1070	return 0;
		1071	}
		1072
		1073	static int
		1074	api_cede_notself (void)
		1075	{
		1076	struct transfer_args ta;
		1077
		1078	if (prepare_cede_notself (&ta))
		1079	{
		1080	TRANSFER (ta);
		1081	return 1;
		1082	}
		1083	else
		1084	return 0;
913	}	1085	}
914		1086
915	MODULE = Coro::State PACKAGE = Coro::State	1087	MODULE = Coro::State PACKAGE = Coro::State
916		1088
917	PROTOTYPES: ENABLE	1089	PROTOTYPES: DISABLE
918		1090
919	BOOT:	1091	BOOT:
920	{ /* {} necessary for stoopid perl-5.6.x */	1092	{
921	#ifdef USE_ITHREADS	1093	#ifdef USE_ITHREADS
922	MUTEX_INIT (&coro_mutex);	1094	MUTEX_INIT (&coro_mutex);
923	#endif	1095	#endif
924	BOOT_PAGESIZE;	1096	BOOT_PAGESIZE;
925		1097
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);	1098	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
929		1099
930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1100	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1103	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1104	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
934		1105
935	main_mainstack = PL_mainstack;	1106	main_mainstack = PL_mainstack;
936		1107
937	coroapi.ver = CORO_API_VERSION;	1108	coroapi.ver = CORO_API_VERSION;
938	coroapi.transfer = api_transfer;	1109	coroapi.transfer = api_transfer;
939	}
940		1110
941	Coro::State	1111	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
942	_newprocess(args)	1112	}
943	SV * args	1113
944	PROTOTYPE: $	1114	SV *
		1115	new (char *klass, ...)
945	CODE:	1116	CODE:
946	Coro__State coro;	1117	{
		1118	struct coro *coro;
		1119	HV *hv;
		1120	int i;
947		1121
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);	1122	Newz (0, coro, 1, struct coro);
		1123	coro->args = newAV ();
		1124	coro->save = CORO_SAVE_ALL;
		1125	coro->flags = CF_NEW;
952		1126
953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1127	hv = newHV ();
954	/coro->mainstack = 0; //actual work is done inside transfer /	1128	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
955	/coro->stack = 0;/	1129	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
956		1130
957	/* same as JMPENV_BOOTSTRAP */	1131	for (i = 1; i < items; i++)
958	/* we might be able to recycle start_env, but safe is safe */	1132	av_push (coro->args, newSVsv (ST (i)));
959	/Zero(&coro->start_env, 1, JMPENV);/	1133	}
960	coro->start_env.je_ret = -1;
961	coro->start_env.je_mustcatch = TRUE;
962
963	RETVAL = coro;
964	OUTPUT:	1134	OUTPUT:
965	RETVAL	1135	RETVAL
966		1136
		1137	int
		1138	save (SV *coro, int new_save = -1)
		1139	CODE:
		1140	RETVAL = api_save (coro, new_save);
		1141	OUTPUT:
		1142	RETVAL
		1143
967	void	1144	void
968	transfer(prev, next, flags)	1145	_set_stacklevel (...)
969	SV *prev	1146	ALIAS:
970	SV *next	1147	Coro::State::transfer = 1
971	int flags	1148	Coro::schedule = 2
972	PROTOTYPE: @	1149	Coro::cede = 3
		1150	Coro::cede_notself = 4
973	CODE:	1151	CODE:
974	PUTBACK;	1152	{
975	SV_CORO (next, "Coro::transfer");	1153	struct transfer_args ta;
976	SV_CORO (prev, "Coro::transfer");	1154
977	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1155	switch (ix)
978	SPAGAIN;	1156	{
		1157	case 0:
		1158	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1159	ta.next = 0;
		1160	break;
		1161
		1162	case 1:
		1163	if (items != 2)
		1164	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1165
		1166	prepare_transfer (&ta, ST (0), ST (1));
		1167	break;
		1168
		1169	case 2:
		1170	prepare_schedule (&ta);
		1171	break;
		1172
		1173	case 3:
		1174	prepare_cede (&ta);
		1175	break;
		1176
		1177	case 4:
		1178	if (!prepare_cede_notself (&ta))
		1179	XSRETURN_EMPTY;
		1180
		1181	break;
		1182	}
		1183
		1184	BARRIER;
		1185	TRANSFER (ta);
		1186	}
979		1187
980	void	1188	void
981	DESTROY(coro)	1189	_clone_state_from (SV dst, SV src)
982	Coro::State coro	1190	CODE:
983	CODE:	1191	{
		1192	struct coro *coro_src = SvSTATE (src);
984		1193
985	if (coro->mainstack && coro->mainstack != main_mainstack)	1194	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
986	{
987	struct coro temp;
988		1195
989	PUTBACK;	1196	++coro_src->refcnt;
990	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1197	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
991	LOAD (aTHX_ coro);	1198	}
992	SPAGAIN;
993
994	destroy_stacks (aTHX);
995
996	LOAD ((&temp)); /* this will get rid of defsv etc.. */
997	SPAGAIN;
998
999	coro->mainstack = 0;
1000	}
1001
1002	deallocate_stack (coro);
1003	SvREFCNT_dec (coro->args);
1004	Safefree (coro);
1005		1199
1006	void	1200	void
1007	_exit(code)	1201	_exit (code)
1008	int code	1202	int code
1009	PROTOTYPE: $	1203	PROTOTYPE: $
1010	CODE:	1204	CODE:
1011	_exit (code);	1205	_exit (code);
1012		1206
1013	MODULE = Coro::State PACKAGE = Coro::Cont	1207	int
		1208	cctx_count ()
		1209	CODE:
		1210	RETVAL = cctx_count;
		1211	OUTPUT:
		1212	RETVAL
1014		1213
1015	# this is slightly dirty (should expose a c-level api)	1214	int
1016		1215	cctx_idle ()
1017	void	1216	CODE:
1018	yield(...)	1217	RETVAL = cctx_idle;
1019	PROTOTYPE: @	1218	OUTPUT:
1020	CODE:	1219	RETVAL
1021	SV *yieldstack;
1022	SV *sv;
1023	AV *defav = GvAV (PL_defgv);
1024	struct coro prev, next;
1025
1026	yieldstack = *hv_fetch (
1027	(HV *)SvRV (GvSV (coro_current)),
1028	"yieldstack", sizeof ("yieldstack") - 1,
1029	0
1030	);
1031
1032	/* set up @_ -- ugly */
1033	av_clear (defav);
1034	av_fill (defav, items - 1);
1035	while (items--)
1036	av_store (defav, items, SvREFCNT_inc (ST(items)));
1037
1038	sv = av_pop ((AV *)SvRV (yieldstack));
1039	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1040	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1041	SvREFCNT_dec (sv);
1042
1043	transfer (aTHX_ prev, next, 0);
1044		1220
1045	MODULE = Coro::State PACKAGE = Coro	1221	MODULE = Coro::State PACKAGE = Coro
1046		1222
1047	# this is slightly dirty (should expose a c-level api)
1048
1049	BOOT:	1223	BOOT:
1050	{	1224	{
1051	int i;	1225	int i;
		1226
1052	HV *stash = gv_stashpv ("Coro", TRUE);	1227	coro_stash = gv_stashpv ("Coro", TRUE);
1053		1228
1054	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1229	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1055	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1230	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1056	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1231	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1057	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1232	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1058	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1233	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1059	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1234	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1060		1235
1061	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1236	coro_current = get_sv ("Coro::current", FALSE);
1062	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1237	SvREADONLY_on (coro_current);
1063		1238
1064	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1239	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1065	coro_ready[i] = newAV ();	1240	coro_ready[i] = newAV ();
1066		1241
1067	{	1242	{
1068	SV *sv = perl_get_sv("Coro::API", 1);	1243	SV *sv = perl_get_sv("Coro::API", 1);
1069		1244
1070	coroapi.schedule = api_schedule;	1245	coroapi.schedule = api_schedule;
		1246	coroapi.save = api_save;
1071	coroapi.cede = api_cede;	1247	coroapi.cede = api_cede;
		1248	coroapi.cede_notself = api_cede_notself;
1072	coroapi.ready = api_ready;	1249	coroapi.ready = api_ready;
		1250	coroapi.is_ready = api_is_ready;
1073	coroapi.nready = &coro_nready;	1251	coroapi.nready = &coro_nready;
1074	coroapi.current = coro_current;	1252	coroapi.current = coro_current;
1075		1253
1076	GCoroAPI = &coroapi;	1254	GCoroAPI = &coroapi;
1077	sv_setiv(sv, (IV)&coroapi);	1255	sv_setiv (sv, (IV)&coroapi);
1078	SvREADONLY_on(sv);	1256	SvREADONLY_on (sv);
1079	}	1257	}
1080	}	1258	}
1081		1259
1082	#if !PERL_MICRO
1083
1084	void	1260	void
1085	ready(self)	1261	_set_current (SV *current)
1086	SV * self
1087	PROTOTYPE: $	1262	PROTOTYPE: $
1088	CODE:	1263	CODE:
1089	api_ready (self);	1264	SvREFCNT_dec (SvRV (coro_current));
1090		1265	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1091	#endif
1092		1266
1093	int	1267	int
		1268	prio (Coro::State coro, int newprio = 0)
		1269	ALIAS:
		1270	nice = 1
		1271	CODE:
		1272	{
		1273	RETVAL = coro->prio;
		1274
		1275	if (items > 1)
		1276	{
		1277	if (ix)
		1278	newprio = coro->prio - newprio;
		1279
		1280	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1281	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1282
		1283	coro->prio = newprio;
		1284	}
		1285	}
		1286	OUTPUT:
		1287	RETVAL
		1288
		1289	SV *
		1290	ready (SV *self)
		1291	PROTOTYPE: $
		1292	CODE:
		1293	RETVAL = boolSV (api_ready (self));
		1294	OUTPUT:
		1295	RETVAL
		1296
		1297	SV *
		1298	is_ready (SV *self)
		1299	PROTOTYPE: $
		1300	CODE:
		1301	RETVAL = boolSV (api_is_ready (self));
		1302	OUTPUT:
		1303	RETVAL
		1304
		1305	int
1094	nready(...)	1306	nready (...)
1095	PROTOTYPE:	1307	PROTOTYPE:
1096	CODE:	1308	CODE:
1097	RETVAL = coro_nready;	1309	RETVAL = coro_nready;
1098	OUTPUT:	1310	OUTPUT:
1099	RETVAL	1311	RETVAL
1100		1312
1101	void	1313	MODULE = Coro::State PACKAGE = Coro::AIO
1102	schedule(...)	1314
1103	PROTOTYPE:	1315	SV *
		1316	_get_state ()
1104	CODE:	1317	CODE:
1105	api_schedule ();
1106
1107	void
1108	cede(...)
1109	PROTOTYPE:
1110	CODE:
1111	api_cede ();
1112
1113	# and these are hacks
1114	SV *
1115	_aio_get_state ()
1116	CODE:
1117	{	1318	{
1118	struct {	1319	struct io_state *data;
1119	int errorno;
1120	int laststype;
1121	int laststatval;
1122	Stat_t statcache;
1123	} data;
1124		1320
		1321	RETVAL = newSV (sizeof (struct io_state));
		1322	data = (struct io_state *)SvPVX (RETVAL);
		1323	SvCUR_set (RETVAL, sizeof (struct io_state));
		1324	SvPOK_only (RETVAL);
		1325
1125	data.errorno = errno;	1326	data->errorno = errno;
1126	data.laststype = PL_laststype;	1327	data->laststype = PL_laststype;
1127	data.laststatval = PL_laststatval;	1328	data->laststatval = PL_laststatval;
1128	data.statcache = PL_statcache;	1329	data->statcache = PL_statcache;
1129
1130	RETVAL = newSVpvn ((char *)&data, sizeof data);
1131	}	1330	}
1132	OUTPUT:	1331	OUTPUT:
1133	RETVAL	1332	RETVAL
1134		1333
1135	void	1334	void
1136	_aio_set_state (char *data_)	1335	_set_state (char *data_)
1137	PROTOTYPE: $	1336	PROTOTYPE: $
1138	CODE:	1337	CODE:
1139	{	1338	{
1140	struct {	1339	struct io_state data = (void )data_;
1141	int errorno;
1142	int laststype;
1143	int laststatval;
1144	Stat_t statcache;
1145	} data = (void )data_;
1146		1340
1147	errno = data->errorno;	1341	errno = data->errorno;
1148	PL_laststype = data->laststype;	1342	PL_laststype = data->laststype;
1149	PL_laststatval = data->laststatval;	1343	PL_laststatval = data->laststatval;
1150	PL_statcache = data->statcache;	1344	PL_statcache = data->statcache;
1151	}	1345	}
		1346

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Comparing Coro/Coro/State.xs (file contents): Revision 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs. Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.79 by root, Thu Nov 2 12:29:08 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC