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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.135 by root, Fri Jan 5 18:25:51 2007 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#include <stdio.h>
		10	#include <errno.h>
		11	#include <assert.h>
		12
		13	#ifdef HAVE_MMAP
		14	# include <unistd.h>
		15	# include <sys/mman.h>
		16	# ifndef MAP_ANONYMOUS
		17	# ifdef MAP_ANON
		18	# define MAP_ANONYMOUS MAP_ANON
		19	# else
		20	# undef HAVE_MMAP
		21	# endif
		22	# endif
		23	# include <limits.h>
		24	# ifndef PAGESIZE
		25	# define PAGESIZE pagesize
		26	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		27	static long pagesize;
		28	# else
		29	# define BOOT_PAGESIZE (void)0
		30	# endif
		31	#else
		32	# define PAGESIZE 0
		33	# define BOOT_PAGESIZE (void)0
		34	#endif
		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	50	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	51	# define PL_ppaddr ppaddr
14	# endif	52	# endif
15	# ifndef call_sv	53	# ifndef call_sv
16	# define call_sv perl_call_sv	54	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
29	# endif	67	# endif
30	#endif	68	#endif
31		69
32	#include <errno.h>	70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
33		74
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	76	# undef STACKGUARD
36	#endif	77	#endif
37		78
38	#ifndef STACKGUARD	79	#ifndef STACKGUARD
39	# define STACKGUARD 0	80	# define STACKGUARD 0
40	#endif	81	#endif
41		82
42	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
43	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
44	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
45	# ifndef MAP_ANONYMOUS
46	# ifdef MAP_ANON
47	# define MAP_ANONYMOUS MAP_ANON
48	# else
49	# undef HAVE_MMAP
50	# endif
51	# endif	86	#endif
52	# include <limits.h>
53	# ifndef PAGESIZE
54	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;
57	# else
58	# define BOOT_PAGESIZE
59	# endif
60	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64		87
65	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* The next macro should declare a variable stacklevel that contains and approximation
66	* to the current C stack pointer. Its property is that it changes with each call	89	* to the current C stack pointer. Its property is that it changes with each call
67	* and should be unique. */	90	* and should be unique. */
		91	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	92	#define STACKLEVEL ((void *)&stacklevel)
69		93
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		95
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	96	#if __GNUC__ >= 3
		97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		99	#else
		100	# define attribute(x)
		101	# define BARRIER
		102	#endif
		103
		104	#define NOINLINE attribute ((noinline))
73		105
74	#include "CoroAPI.h"	106	#include "CoroAPI.h"
75		107
76	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
…		…
80	#else	112	#else
81	# define LOCK (void)0	113	# define LOCK (void)0
82	# define UNLOCK (void)0	114	# define UNLOCK (void)0
83	#endif	115	#endif
84		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
85	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	127	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
91		129
92	/* this is actually not only the c stack but also c registers etc... */	130	static struct coro_cctx *cctx_first;
		131	static int cctx_count, cctx_idle;
		132
		133	/* this is a structure representing a c-level coroutine */
93	typedef struct {	134	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	135	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		136
98	coro_context cctx;	137	/* the stack */
99
100	void *sptr;	138	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
102	} coro_stack;
103		140
		141	/* cpu state */
		142	void idle_sp; / sp of top-level transfer/schedule/cede call */
		143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		144	JMPENV *top_env;
		145	coro_context cctx;
		146
		147	int inuse;
		148
		149	#if USE_VALGRIND
		150	int valgrind_id;
		151	#endif
		152	} coro_cctx;
		153
		154	enum {
		155	CF_RUNNING = 0x0001, /* coroutine is running */
		156	CF_READY = 0x0002, /* coroutine is ready */
		157	CF_NEW = 0x0004, /* has never been switched to */
		158	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		159	};
		160
		161	/* this is a structure representing a perl-level coroutine */
104	struct coro {	162	struct coro {
105	/* the top-level JMPENV for each coroutine, needed to catch dies. */	163	/* the c coroutine allocated to this perl coroutine, if any */
106	JMPENV start_env;	164	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		165
153	/* data associated with this coroutine (initial args) */	166	/* data associated with this coroutine (initial args) */
154	AV *args;	167	AV *args;
		168	int refcnt;
		169	int save; /* CORO_SAVE flags */
		170	int flags; /* CF_ flags */
		171
		172	/* optionally saved, might be zero */
		173	AV defav; / @_ */
		174	SV defsv; / $_ */
		175	SV errsv; / $@ */
		176	SV irssv; / $/ */
		177	SV irssv_sv; / real $/ cache */
		178
		179	#define VAR(name,type) type name;
		180	# include "state.h"
		181	#undef VAR
		182
		183	/* coro process data */
		184	int prio;
155	};	185	};
156		186
157	typedef struct coro *Coro__State;	187	typedef struct coro *Coro__State;
158	typedef struct coro *Coro__State_or_hashref;	188	typedef struct coro *Coro__State_or_hashref;
159		189
160	static AV *	190	static AV *
161	coro_clone_padlist (pTHX_ CV *cv)	191	coro_clone_padlist (CV *cv)
162	{	192	{
163	AV *padlist = CvPADLIST (cv);	193	AV *padlist = CvPADLIST (cv);
164	AV newpadlist, newpad;	194	AV newpadlist, newpad;
165		195
166	newpadlist = newAV ();	196	newpadlist = newAV ();
167	AvREAL_off (newpadlist);	197	AvREAL_off (newpadlist);
		198	#if PERL_VERSION_ATLEAST (5,9,0)
		199	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		200	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	201	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		202	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	203	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	204	--AvFILLp (padlist);
171		205
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	206	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
173	av_store (newpadlist, 1, (SV *)newpad);	207	av_store (newpadlist, 1, (SV *)newpad);
174		208
175	return newpadlist;	209	return newpadlist;
176	}	210	}
177		211
178	static void	212	static void
179	free_padlist (pTHX_ AV *padlist)	213	free_padlist (AV *padlist)
180	{	214	{
181	/* may be during global destruction */	215	/* may be during global destruction */
182	if (SvREFCNT (padlist))	216	if (SvREFCNT (padlist))
183	{	217	{
184	I32 i = AvFILLp (padlist);	218	I32 i = AvFILLp (padlist);
…		…
205	AV *padlist;	239	AV *padlist;
206	AV av = (AV )mg->mg_obj;	240	AV av = (AV )mg->mg_obj;
207		241
208	/* casting is fun. */	242	/* casting is fun. */
209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	243	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
210	free_padlist (aTHX_ padlist);	244	free_padlist (padlist);
211		245
212	SvREFCNT_dec (av);	246	SvREFCNT_dec (av);
213		247
214	return 0;	248	return 0;
215	}	249	}
216		250
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	251	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		252
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	253	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		254
		255	#define CORO_MAGIC(cv) \
		256	SvMAGIC (cv) \
		257	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		258	? SvMAGIC (cv) \
		259	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		260	: 0
		261
221	/* the next two functions merely cache the padlists */	262	/* the next two functions merely cache the padlists */
222	static void	263	static void
223	get_padlist (pTHX_ CV *cv)	264	get_padlist (CV *cv)
224	{	265	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	266	MAGIC *mg = CORO_MAGIC (cv);
		267	AV *av;
226		268
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	271	else
230	{	272	{
231	#if 0	273	#if PREFER_PERL_FUNCTIONS
232	/* this should work - but it doesn't :( */	274	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (aTHX_ cv);	275	CV *cp = Perl_cv_clone (cv);
234	CvPADLIST (cv) = CvPADLIST (cp);	276	CvPADLIST (cv) = CvPADLIST (cp);
235	CvPADLIST (cp) = 0;	277	CvPADLIST (cp) = 0;
236	SvREFCNT_dec (cp);	278	SvREFCNT_dec (cp);
237	#else	279	#else
238	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	280	CvPADLIST (cv) = coro_clone_padlist (cv);
239	#endif	281	#endif
240	}	282	}
241	}	283	}
242		284
243	static void	285	static void
244	put_padlist (pTHX_ CV *cv)	286	put_padlist (CV *cv)
245	{	287	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	288	MAGIC *mg = CORO_MAGIC (cv);
		289	AV *av;
247		290
248	if (!mg)	291	if (!mg)
249	{	292	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	293	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	294	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	295	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	296	mg->mg_obj = (SV *)newAV ();
254	}	297	}
255		298
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	299	av = (AV *)mg->mg_obj;
		300
		301	if (AvFILLp (av) >= AvMAX (av))
		302	av_extend (av, AvMAX (av) + 1);
		303
		304	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	305	}
258		306
259	#define SB do {	307	#define SB do {
260	#define SE } while (0)	308	#define SE } while (0)
261		309
262	#define LOAD(state) load_state(aTHX_ (state));
263	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
264
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
266		311
267	static void	312	static void
268	load_state(pTHX_ Coro__State c)	313	load_perl (Coro__State c)
269	{	314	{
270	PL_dowarn = c->dowarn;	315	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	316	# include "state.h"
272		317	#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	PL_top_env = c->top_env;
304		318
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	321	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		322	if (c->irssv)
		323	{
		324	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		325	SvREFCNT_dec (c->irssv);
		326	else
		327	{
		328	REPLACE_SV (PL_rs, c->irssv);
		329	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		330	sv_setsv (c->irssv_sv, PL_rs);
		331	}
		332	}
308		333
309	{	334	{
310	dSP;	335	dSP;
311	CV *cv;	336	CV *cv;
312		337
313	/* now do the ugly restore mess */	338	/* now do the ugly restore mess */
314	while ((cv = (CV *)POPs))	339	while ((cv = (CV *)POPs))
315	{	340	{
316	AV padlist = (AV )POPs;
317
318	if (padlist)
319	{
320	put_padlist (aTHX_ cv); /* mark this padlist as available */	341	put_padlist (cv); /* mark this padlist as available */
321	CvPADLIST(cv) = padlist;	342	CvDEPTH (cv) = PTR2IV (POPs);
322	}	343	CvPADLIST (cv) = (AV *)POPs;
323
324	++CvDEPTH(cv);
325	}	344	}
326		345
327	PUTBACK;	346	PUTBACK;
328	}	347	}
329	}	348	}
330		349
331	static void	350	static void
332	save_state(pTHX_ Coro__State c, int flags)	351	save_perl (Coro__State c)
333	{	352	{
334	{	353	{
335	dSP;	354	dSP;
336	I32 cxix = cxstack_ix;	355	I32 cxix = cxstack_ix;
337	PERL_CONTEXT *ccstk = cxstack;	356	PERL_CONTEXT *ccstk = cxstack;
…		…
340	/*	359	/*
341	* the worst thing you can imagine happens first - we have to save	360	* the worst thing you can imagine happens first - we have to save
342	* (and reinitialize) all cv's in the whole callchain :(	361	* (and reinitialize) all cv's in the whole callchain :(
343	*/	362	*/
344		363
		364	EXTEND (SP, 3 + 1);
345	PUSHs (Nullsv);	365	PUSHs (Nullsv);
346	/* this loop was inspired by pp_caller */	366	/* this loop was inspired by pp_caller */
347	for (;;)	367	for (;;)
348	{	368	{
349	while (cxix >= 0)	369	while (cxix >= 0)
350	{	370	{
351	PERL_CONTEXT *cx = &ccstk[cxix--];	371	PERL_CONTEXT *cx = &ccstk[cxix--];
352		372
353	if (CxTYPE(cx) == CXt_SUB)	373	if (CxTYPE (cx) == CXt_SUB)
354	{	374	{
355	CV *cv = cx->blk_sub.cv;	375	CV *cv = cx->blk_sub.cv;
		376
356	if (CvDEPTH(cv))	377	if (CvDEPTH (cv))
357	{	378	{
358	EXTEND (SP, CvDEPTH(cv)*2);	379	EXTEND (SP, 3);
359
360	while (--CvDEPTH(cv))
361	{
362	/* this tells the restore code to increment CvDEPTH */
363	PUSHs (Nullsv);
364	PUSHs ((SV *)cv);
365	}
366
367	PUSHs ((SV *)CvPADLIST(cv));	380	PUSHs ((SV *)CvPADLIST (cv));
		381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
368	PUSHs ((SV *)cv);	382	PUSHs ((SV *)cv);
369		383
		384	CvDEPTH (cv) = 0;
370	get_padlist (aTHX_ cv);	385	get_padlist (cv);
371	}	386	}
372	}	387	}
373	#ifdef CXt_FORMAT
374	else if (CxTYPE(cx) == CXt_FORMAT)
375	{
376	/* I never used formats, so how should I know how these are implemented? */
377	/* my bold guess is as a simple, plain sub... */
378	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
379	}
380	#endif
381	}	388	}
382		389
383	if (top_si->si_type == PERLSI_MAIN)	390	if (top_si->si_type == PERLSI_MAIN)
384	break;	391	break;
385		392
…		…
389	}	396	}
390		397
391	PUTBACK;	398	PUTBACK;
392	}	399	}
393		400
394	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	401	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
395	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
396	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	403	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		404	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
397		405
398	c->dowarn = PL_dowarn;	406	#define VAR(name,type)c->name = PL_ ## name;
399	c->in_eval = PL_in_eval;	407	# include "state.h"
400		408	#undef VAR
401	c->curstackinfo = PL_curstackinfo;
402	c->curstack = PL_curstack;
403	c->mainstack = PL_mainstack;
404	c->stack_sp = PL_stack_sp;
405	c->op = PL_op;
406	c->curpad = PL_curpad;
407	c->comppad = PL_comppad;
408	c->compcv = PL_compcv;
409	c->stack_base = PL_stack_base;
410	c->stack_max = PL_stack_max;
411	c->tmps_stack = PL_tmps_stack;
412	c->tmps_floor = PL_tmps_floor;
413	c->tmps_ix = PL_tmps_ix;
414	c->tmps_max = PL_tmps_max;
415	c->markstack = PL_markstack;
416	c->markstack_ptr = PL_markstack_ptr;
417	c->markstack_max = PL_markstack_max;
418	c->scopestack = PL_scopestack;
419	c->scopestack_ix = PL_scopestack_ix;
420	c->scopestack_max = PL_scopestack_max;
421	c->savestack = PL_savestack;
422	c->savestack_ix = PL_savestack_ix;
423	c->savestack_max = PL_savestack_max;
424	#if PERL_VERSION < 9
425	c->retstack = PL_retstack;
426	c->retstack_ix = PL_retstack_ix;
427	c->retstack_max = PL_retstack_max;
428	#endif
429	c->curpm = PL_curpm;
430	c->curcop = PL_curcop;
431	c->top_env = PL_top_env;
432	}	409	}
433		410
434	/*	411	/*
435	* allocate various perl stacks. This is an exact copy	412	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	413	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	414	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	415	* not usually need a lot of stackspace.
439	*/	416	*/
		417	#if PREFER_PERL_FUNCTIONS
		418	# define coro_init_stacks init_stacks
		419	#else
440	static void	420	static void
441	coro_init_stacks (pTHX)	421	coro_init_stacks ()
442	{	422	{
443	LOCK;
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
446	PL_curstackinfo->si_type = PERLSI_MAIN;	424	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	425	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		427
450	PL_stack_base = AvARRAY(PL_curstack);	428	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	429	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		431
454	New(50,PL_tmps_stack,96,SV*);	432	New(50,PL_tmps_stack,128,SV*);
455	PL_tmps_floor = -1;	433	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	434	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	435	PL_tmps_max = 128;
458		436
459	New(54,PL_markstack,16,I32);	437	New(54,PL_markstack,32,I32);
460	PL_markstack_ptr = PL_markstack;	438	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	439	PL_markstack_max = PL_markstack + 32;
462		440
463	#ifdef SET_MARK_OFFSET	441	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	442	SET_MARK_OFFSET;
465	#endif	443	#endif
466		444
467	New(54,PL_scopestack,16,I32);	445	New(54,PL_scopestack,32,I32);
468	PL_scopestack_ix = 0;	446	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	447	PL_scopestack_max = 32;
470		448
471	New(54,PL_savestack,96,ANY);	449	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	450	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	451	PL_savestack_max = 64;
474		452
475	#if PERL_VERSION < 9	453	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	454	New(54,PL_retstack,16,OP*);
477	PL_retstack_ix = 0;	455	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	456	PL_retstack_max = 16;
479	#endif	457	#endif
480
481	UNLOCK;
482	}	458	}
		459	#endif
483		460
484	/*	461	/*
485	* destroy the stacks, the callchain etc...	462	* destroy the stacks, the callchain etc...
486	*/	463	*/
487	static void	464	static void
488	destroy_stacks(pTHX)	465	coro_destroy_stacks ()
489	{	466	{
490	if (!IN_DESTRUCT)	467	if (!IN_DESTRUCT)
491	{	468	{
492	/* is this ugly, I ask? */	469	/* restore all saved variables and stuff */
493	LEAVE_SCOPE (0);	470	LEAVE_SCOPE (0);
		471	assert (PL_tmps_floor == -1);
494		472
495	/* sure it is, but more important: is it correct?? :/ */	473	/* free all temporaries */
496	FREETMPS;	474	FREETMPS;
		475	assert (PL_tmps_ix == -1);
497		476
		477	/* unwind all extra stacks */
498	/POPSTACK_TO (PL_mainstack);//D//use/	478	POPSTACK_TO (PL_mainstack);
		479
		480	/* unwind main stack */
		481	dounwind (-1);
499	}	482	}
500		483
501	while (PL_curstackinfo->si_next)	484	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	485	PL_curstackinfo = PL_curstackinfo->si_next;
503		486
504	while (PL_curstackinfo)	487	while (PL_curstackinfo)
505	{	488	{
506	PERL_SI *p = PL_curstackinfo->si_prev;	489	PERL_SI *p = PL_curstackinfo->si_prev;
507		490
508	{ /D//remove/
509	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */
512	}
513
514	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
515	{
516	dounwind (-1);/D//remove/
517	SvREFCNT_dec (PL_curstackinfo->si_stack);	492	SvREFCNT_dec (PL_curstackinfo->si_stack);
518	}
519		493
520	Safefree (PL_curstackinfo->si_cxstack);	494	Safefree (PL_curstackinfo->si_cxstack);
521	Safefree (PL_curstackinfo);	495	Safefree (PL_curstackinfo);
522	PL_curstackinfo = p;	496	PL_curstackinfo = p;
523	}	497	}
524		498
525	Safefree (PL_tmps_stack);	499	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	500	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	501	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	502	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	503	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	504	Safefree (PL_retstack);
531	#endif	505	#endif
532	}	506	}
533		507
534	static void	508	static void
535	allocate_stack (Coro__State ctx, int alloc)	509	setup_coro (struct coro *coro)
536	{
537	coro_stack *stack;
538
539	New (0, stack, 1, coro_stack);
540
541	stack->refcnt = 1;
542	stack->usecnt = 1;
543	stack->gencnt = ctx->gencnt = 0;
544
545	if (alloc)
546	{
547	#if HAVE_MMAP
548	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
549	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
550	if (stack->sptr != (void *)-1)
551	{
552	# if STACKGUARD
553	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
554	# endif
555	}
556	else
557	#endif
558	{
559	stack->ssize = - (STACKSIZE * (long)sizeof (long));
560	New (0, stack->sptr, STACKSIZE, long);
561	}
562	}
563	else
564	stack->sptr = 0;
565
566	ctx->stack = stack;
567	}
568
569	static void
570	deallocate_stack (Coro__State ctx)
571	{
572	coro_stack *stack = ctx->stack;
573
574	ctx->stack = 0;
575
576	if (stack)
577	{
578	if (!--stack->refcnt)
579	{
580	#ifdef HAVE_MMAP
581	if (stack->ssize > 0 && stack->sptr)
582	munmap (stack->sptr, stack->ssize);
583	else
584	#endif
585	Safefree (stack->sptr);
586
587	Safefree (stack);
588	}
589	else if (ctx->gencnt == stack->gencnt)
590	--stack->usecnt;
591	}
592	}
593
594	static void
595	setup_coro (void *arg)
596	{	510	{
597	/*	511	/*
598	* emulate part of the perl startup here.	512	* emulate part of the perl startup here.
599	*/	513	*/
600	dTHX;	514
		515	coro_init_stacks ();
		516
		517	PL_curcop = &PL_compiling;
		518	PL_in_eval = EVAL_NULL;
		519	PL_curpm = 0;
		520	PL_localizing = 0;
		521	PL_dirty = 0;
		522	PL_restartop = 0;
		523
		524	{
		525	dSP;
		526	LOGOP myop;
		527
		528	SvREFCNT_dec (GvAV (PL_defgv));
		529	GvAV (PL_defgv) = coro->args; coro->args = 0;
		530
		531	Zero (&myop, 1, LOGOP);
		532	myop.op_next = Nullop;
		533	myop.op_flags = OPf_WANT_VOID;
		534
		535	PUSHMARK (SP);
		536	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		537	PUTBACK;
		538	PL_op = (OP *)&myop;
		539	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		540	SPAGAIN;
		541	}
		542
		543	ENTER; /* necessary e.g. for dounwind */
		544	}
		545
		546	static void
		547	free_coro_mortal ()
		548	{
		549	if (coro_mortal)
		550	{
		551	SvREFCNT_dec (coro_mortal);
		552	coro_mortal = 0;
		553	}
		554	}
		555
		556	/* inject a fake call to Coro::State::_cctx_init into the execution */
		557	static void NOINLINE
		558	prepare_cctx (coro_cctx *cctx)
		559	{
601	dSP;	560	dSP;
602	Coro__State ctx = (Coro__State)arg;	561	LOGOP myop;
603	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
604		562
605	coro_init_stacks (aTHX);	563	Zero (&myop, 1, LOGOP);
606	/PL_curcop = 0;/	564	myop.op_next = PL_op;
607	/PL_in_eval = PL_in_eval;/ /* inherit */	565	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
608	SvREFCNT_dec (GvAV (PL_defgv));
609	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
610		566
		567	PUSHMARK (SP);
		568	EXTEND (SP, 2);
		569	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		570	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		571	PUTBACK;
		572	PL_op = (OP *)&myop;
		573	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
611	SPAGAIN;	574	SPAGAIN;
612
613	if (ctx->stack)
614	{
615	ctx->cursp = 0;
616
617	PUSHMARK(SP);
618	PUTBACK;
619	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
620
621	if (SvTRUE (ERRSV))
622	croak (NULL);
623	else
624	croak ("FATAL: CCTXT coroutine returned!");
625	}
626	else
627	{
628	UNOP myop;
629
630	PL_op = (OP *)&myop;
631
632	Zero(&myop, 1, UNOP);
633	myop.op_next = Nullop;
634	myop.op_flags = OPf_WANT_VOID;
635
636	PUSHMARK(SP);
637	XPUSHs (sub_init);
638	/*
639	* the next line is slightly wrong, as PL_op->op_next
640	* is actually being executed so we skip the first op.
641	* that doesn't matter, though, since it is only
642	* pp_nextstate and we never return...
643	* ah yes, and I don't care anyways ;)
644	*/
645	PUTBACK;
646	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
647	SPAGAIN;
648
649	ENTER; /* necessary e.g. for dounwind */
650	}
651	}	575	}
652		576
653	static void	577	static void
654	continue_coro (void *arg)	578	coro_run (void *arg)
655	{	579	{
		580	/* coro_run is the alternative tail of transfer(), so unlock here. */
		581	UNLOCK;
		582
656	/*	583	/*
657	* this is a _very_ stripped down perl interpreter ;)	584	* this is a _very_ stripped down perl interpreter ;)
658	*/	585	*/
659	dTHX;
660	Coro__State ctx = (Coro__State)arg;
661
662	PL_top_env = &ctx->start_env;	586	PL_top_env = &PL_start_env;
663		587
664	ctx->cursp = 0;	588	/* inject call to cctx_init */
665	PL_op = PL_op->op_next;	589	prepare_cctx ((coro_cctx *)arg);
666	CALLRUNOPS(aTHX);
667		590
		591	/* somebody will hit me for both perl_run and PL_restartop */
		592	PL_restartop = PL_op;
		593	perl_run (PL_curinterp);
		594
		595	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
668	abort ();	596	abort ();
669	}	597	}
670		598
		599	static coro_cctx *
		600	cctx_new ()
		601	{
		602	coro_cctx *cctx;
		603
		604	++cctx_count;
		605
		606	Newz (0, cctx, 1, coro_cctx);
		607
		608	#if HAVE_MMAP
		609
		610	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		611	/* mmap supposedly does allocate-on-write for us */
		612	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		613
		614	if (cctx->sptr == (void *)-1)
		615	{
		616	perror ("FATAL: unable to mmap stack for coroutine");
		617	_exit (EXIT_FAILURE);
		618	}
		619
		620	# if STACKGUARD
		621	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		622	# endif
		623
		624	#else
		625
		626	cctx->ssize = STACKSIZE * (long)sizeof (long);
		627	New (0, cctx->sptr, STACKSIZE, long);
		628
		629	if (!cctx->sptr)
		630	{
		631	perror ("FATAL: unable to malloc stack for coroutine");
		632	_exit (EXIT_FAILURE);
		633	}
		634
		635	#endif
		636
		637	#if USE_VALGRIND
		638	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		639	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		640	cctx->ssize + (char *)cctx->sptr
		641	);
		642	#endif
		643
		644	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		645
		646	return cctx;
		647	}
		648
671	static void	649	static void
		650	cctx_destroy (coro_cctx *cctx)
		651	{
		652	if (!cctx)
		653	return;
		654
		655	--cctx_count;
		656
		657	#if USE_VALGRIND
		658	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		659	#endif
		660
		661	#if HAVE_MMAP
		662	munmap (cctx->sptr, cctx->ssize);
		663	#else
		664	Safefree (cctx->sptr);
		665	#endif
		666
		667	Safefree (cctx);
		668	}
		669
		670	static coro_cctx *
		671	cctx_get ()
		672	{
		673	coro_cctx *cctx;
		674
		675	if (cctx_first)
		676	{
		677	cctx = cctx_first;
		678	cctx_first = cctx->next;
		679	--cctx_idle;
		680	}
		681	else
		682	{
		683	cctx = cctx_new ();
		684	PL_op = PL_op->op_next;
		685	}
		686
		687	return cctx;
		688	}
		689
		690	static void
		691	cctx_put (coro_cctx *cctx)
		692	{
		693	/* free another cctx if overlimit */
		694	if (cctx_idle >= MAX_IDLE_CCTX)
		695	{
		696	coro_cctx *first = cctx_first;
		697	cctx_first = first->next;
		698	--cctx_idle;
		699
		700	assert (!first->inuse);
		701	cctx_destroy (first);
		702	}
		703
		704	++cctx_idle;
		705	cctx->next = cctx_first;
		706	cctx_first = cctx;
		707	}
		708
		709	/* never call directly, always through the coro_state_transfer global variable */
		710	static void NOINLINE
672	transfer (pTHX_ struct coro prev, struct coro next, int flags)	711	transfer (struct coro prev, struct coro next)
673	{	712	{
674	dSTACKLEVEL;	713	dSTACKLEVEL;
675		714
		715	/* sometimes transfer is only called to set idle_sp */
		716	if (!next)
		717	{
		718	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		719	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		720	}
676	if (prev != next)	721	else if (prev != next)
677	{	722	{
678	if (next->mainstack)	723	coro_cctx *prev__cctx;
		724
		725	if (prev->flags & CF_NEW)
679	{	726	{
680	LOCK;	727	/* create a new empty context */
681	SAVE (prev, flags);	728	Newz (0, prev->cctx, 1, coro_cctx);
682	LOAD (next);	729	prev->cctx->inuse = 1;
683	UNLOCK;	730	prev->flags &= ~CF_NEW;
684		731	prev->flags \|= CF_RUNNING;
685	/* mark this state as in-use */
686	next->mainstack = 0;
687	next->tmps_ix = -2;
688
689	/* stacklevel changed? if yes, grab the stack for us! */
690	if (flags & TRANSFER_SAVE_CCTXT)
691	{
692	if (!prev->stack)
693	allocate_stack (prev, 0);
694	else if (prev->cursp != stacklevel
695	&& prev->stack->usecnt > 1)
696	{
697	prev->gencnt = ++prev->stack->gencnt;
698	prev->stack->usecnt = 1;
699	}
700
701	/* has our stack been invalidated? */
702	if (next->stack && next->stack->gencnt != next->gencnt)
703	{
704	deallocate_stack (next);
705	allocate_stack (next, 1);
706	coro_create (&(next->stack->cctx),
707	continue_coro, (void *)next,
708	next->stack->sptr, labs (next->stack->ssize));
709	}
710
711	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
712	prev->cursp = stacklevel;
713	/* don't add any code here */
714	}
715	else
716	next->cursp = stacklevel;
717	}	732	}
718	else if (next->tmps_ix == -2)	733
719	croak ("tried to transfer to running coroutine");	734	/TODO: must not croak here /
		735	if (!prev->flags & CF_RUNNING)
		736	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		737
		738	if (next->flags & CF_RUNNING)
		739	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		740
		741	if (next->flags & CF_DESTROYED)
		742	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		743
		744	prev->flags &= ~CF_RUNNING;
		745	next->flags \|= CF_RUNNING;
		746
		747	LOCK;
		748
		749	if (next->flags & CF_NEW)
		750	{
		751	/* need to start coroutine */
		752	next->flags &= ~CF_NEW;
		753	/* first get rid of the old state */
		754	save_perl (prev);
		755	/* setup coroutine call */
		756	setup_coro (next);
		757	/* need a new stack */
		758	assert (!next->cctx);
		759	}
720	else	760	else
721	{	761	{
722	LOCK;	762	/* coroutine already started */
723	SAVE (prev, -1); /* first get rid of the old state */	763	save_perl (prev);
724	UNLOCK;	764	load_perl (next);
725
726	if (flags & TRANSFER_SAVE_CCTXT)
727	{
728	if (!prev->stack)
729	allocate_stack (prev, 0);
730
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732	{
733	PL_top_env = &next->start_env;
734
735	setup_coro (next);
736	next->cursp = stacklevel;
737
738	prev->stack->refcnt++;
739	prev->stack->usecnt++;
740	next->stack = prev->stack;
741	next->gencnt = prev->gencnt;
742	}
743	else
744	{
745	assert (!next->stack);
746	allocate_stack (next, 1);
747	coro_create (&(next->stack->cctx),
748	setup_coro, (void *)next,
749	next->stack->sptr, labs (next->stack->ssize));
750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
751	prev->cursp = stacklevel;
752	/* don't add any code here */
753	}
754	}
755	else
756	{
757	setup_coro (next);
758	next->cursp = stacklevel;
759	}
760	}	765	}
761	}
762		766
763	LOCK;	767	prev__cctx = prev->cctx;
764	if (coro_mortal)	768
765	{	769	/* possibly "free" the cctx */
766	SvREFCNT_dec (coro_mortal);	770	if (prev__cctx->idle_sp == STACKLEVEL)
		771	{
		772	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		773	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		774
		775	prev->cctx = 0;
		776
		777	cctx_put (prev__cctx);
		778	prev__cctx->inuse = 0;
		779	}
		780
		781	if (!next->cctx)
		782	{
		783	next->cctx = cctx_get ();
		784	assert (!next->cctx->inuse);
		785	next->cctx->inuse = 1;
		786	}
		787
		788	if (prev__cctx != next->cctx)
		789	{
		790	prev__cctx->top_env = PL_top_env;
		791	PL_top_env = next->cctx->top_env;
		792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		793	}
		794
767	coro_mortal = 0;	795	free_coro_mortal ();
768	}
769	UNLOCK;	796	UNLOCK;
		797	}
770	}	798	}
771		799
772	#define SV_CORO(sv,func) \	800	struct transfer_args
773	do { \	801	{
774	if (SvROK (sv)) \	802	struct coro prev, next;
775	sv = SvRV (sv); \	803	};
776	\
777	if (SvTYPE (sv) == SVt_PVHV) \
778	{ \
779	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
780	\
781	if (!he) \
782	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
783	\
784	(sv) = SvRV (HeVAL(he)); \
785	} \
786	\
787	/* must also be changed inside Coro::Cont::yield */ \
788	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
789	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
790	\
791	} while(0)
792		804
793	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	805	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
794		806
795	static void	807	static int
		808	coro_state_destroy (struct coro *coro)
		809	{
		810	if (coro->flags & CF_DESTROYED)
		811	return 0;
		812
		813	coro->flags \|= CF_DESTROYED;
		814
		815	if (coro->mainstack && coro->mainstack != main_mainstack)
		816	{
		817	assert (!(coro->flags & CF_RUNNING));
		818
		819	struct coro temp;
		820	Zero (&temp, 1, struct coro);
		821	temp.save = CORO_SAVE_ALL;
		822
		823	if (coro->flags & CF_RUNNING)
		824	croak ("FATAL: tried to destroy currently running coroutine");
		825
		826	save_perl (&temp);
		827	load_perl (coro);
		828
		829	coro_destroy_stacks ();
		830
		831	load_perl (&temp); /* this will get rid of defsv etc.. */
		832
		833	coro->mainstack = 0;
		834	}
		835
		836	cctx_destroy (coro->cctx);
		837	SvREFCNT_dec (coro->args);
		838
		839	return 1;
		840	}
		841
		842	static int
		843	coro_state_free (pTHX_ SV sv, MAGIC mg)
		844	{
		845	struct coro coro = (struct coro )mg->mg_ptr;
		846	mg->mg_ptr = 0;
		847
		848	if (--coro->refcnt < 0)
		849	{
		850	coro_state_destroy (coro);
		851	Safefree (coro);
		852	}
		853
		854	return 0;
		855	}
		856
		857	static int
		858	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		859	{
		860	struct coro coro = (struct coro )mg->mg_ptr;
		861
		862	++coro->refcnt;
		863
		864	return 0;
		865	}
		866
		867	static MGVTBL coro_state_vtbl = {
		868	0, 0, 0, 0,
		869	coro_state_free,
		870	0,
		871	#ifdef MGf_DUP
		872	coro_state_dup,
		873	#else
		874	# define MGf_DUP 0
		875	#endif
		876	};
		877
		878	static struct coro *
		879	SvSTATE (SV *coro)
		880	{
		881	HV *stash;
		882	MAGIC *mg;
		883
		884	if (SvROK (coro))
		885	coro = SvRV (coro);
		886
		887	stash = SvSTASH (coro);
		888	if (stash != coro_stash && stash != coro_state_stash)
		889	{
		890	/* very slow, but rare, check */
		891	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		892	croak ("Coro::State object required");
		893	}
		894
		895	mg = SvMAGIC (coro);
		896	assert (mg->mg_type == PERL_MAGIC_ext);
		897	return (struct coro *)mg->mg_ptr;
		898	}
		899
		900	static void
		901	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		902	{
		903	ta->prev = SvSTATE (prev_sv);
		904	ta->next = SvSTATE (next_sv);
		905	}
		906
		907	static void
796	api_transfer(pTHX_ SV prev, SV next, int flags)	908	api_transfer (SV prev_sv, SV next_sv)
797	{	909	{
798	SV_CORO (prev, "Coro::transfer");	910	struct transfer_args ta;
799	SV_CORO (next, "Coro::transfer");
800		911
801	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	912	prepare_transfer (&ta, prev_sv, next_sv);
		913	TRANSFER (ta);
		914	}
		915
		916	static int
		917	api_save (SV *coro_sv, int new_save)
		918	{
		919	struct coro *coro = SvSTATE (coro_sv);
		920	int old_save = coro->save;
		921
		922	if (new_save >= 0)
		923	coro->save = new_save;
		924
		925	return old_save;
802	}	926	}
803		927
804	/ Coro ******************************************************************/	928	/ Coro ******************************************************************/
805		929
806	#define PRIO_MAX 3	930	#define PRIO_MAX 3
…		…
809	#define PRIO_LOW -1	933	#define PRIO_LOW -1
810	#define PRIO_IDLE -3	934	#define PRIO_IDLE -3
811	#define PRIO_MIN -4	935	#define PRIO_MIN -4
812		936
813	/* for Coro.pm */	937	/* for Coro.pm */
814	static GV coro_current, coro_idle;	938	static SV *coro_current;
815	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	939	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
816	static int coro_nready;	940	static int coro_nready;
817		941
818	static void	942	static void
819	coro_enq (pTHX_ SV *sv)	943	coro_enq (SV *coro_sv)
820	{	944	{
821	SV **xprio;
822	int prio;
823
824	if (SvTYPE (sv) != SVt_PVHV)
825	croak ("Coro::ready tried to enqueue something that is not a coroutine");
826
827	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
828	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
829
830	prio = prio > PRIO_MAX ? PRIO_MAX
831	: prio < PRIO_MIN ? PRIO_MIN
832	: prio;
833
834	av_push (coro_ready [prio - PRIO_MIN], sv);	945	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
835	coro_nready++;	946	coro_nready++;
836	}	947	}
837		948
838	static SV *	949	static SV *
839	coro_deq (pTHX_ int min_prio)	950	coro_deq (int min_prio)
840	{	951	{
841	int prio = PRIO_MAX - PRIO_MIN;	952	int prio = PRIO_MAX - PRIO_MIN;
842		953
843	min_prio -= PRIO_MIN;	954	min_prio -= PRIO_MIN;
844	if (min_prio < 0)	955	if (min_prio < 0)
845	min_prio = 0;	956	min_prio = 0;
846		957
847	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	958	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
848	if (av_len (coro_ready[prio]) >= 0)	959	if (AvFILLp (coro_ready [prio]) >= 0)
849	{	960	{
850	coro_nready--;	961	coro_nready--;
851	return av_shift (coro_ready[prio]);	962	return av_shift (coro_ready [prio]);
852	}	963	}
853		964
854	return 0;	965	return 0;
855	}	966	}
856		967
857	static void	968	static int
858	api_ready (SV *coro)	969	api_ready (SV *coro_sv)
859	{	970	{
860	dTHX;	971	struct coro *coro;
861		972
862	if (SvROK (coro))	973	if (SvROK (coro_sv))
863	coro = SvRV (coro);	974	coro_sv = SvRV (coro_sv);
		975
		976	coro = SvSTATE (coro_sv);
		977
		978	if (coro->flags & CF_READY)
		979	return 0;
		980
		981	coro->flags \|= CF_READY;
864		982
865	LOCK;	983	LOCK;
866	coro_enq (aTHX_ SvREFCNT_inc (coro));	984	coro_enq (SvREFCNT_inc (coro_sv));
867	UNLOCK;	985	UNLOCK;
		986
		987	return 1;
		988	}
		989
		990	static int
		991	api_is_ready (SV *coro_sv)
		992	{
		993	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		994	}
		995
		996	static void
		997	prepare_schedule (struct transfer_args *ta)
		998	{
		999	SV prev_sv, next_sv;
		1000
		1001	for (;;)
		1002	{
		1003	LOCK;
		1004	next_sv = coro_deq (PRIO_MIN);
		1005	UNLOCK;
		1006
		1007	/* nothing to schedule: call the idle handler */
		1008	if (!next_sv)
		1009	{
		1010	dSP;
		1011
		1012	ENTER;
		1013	SAVETMPS;
		1014
		1015	PUSHMARK (SP);
		1016	PUTBACK;
		1017	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1018
		1019	FREETMPS;
		1020	LEAVE;
		1021	continue;
		1022	}
		1023
		1024	ta->next = SvSTATE (next_sv);
		1025
		1026	/* cannot transfer to destroyed coros, skip and look for next */
		1027	if (ta->next->flags & CF_DESTROYED)
		1028	{
		1029	SvREFCNT_dec (next_sv);
		1030	continue;
		1031	}
		1032
		1033	break;
		1034	}
		1035
		1036	/* free this only after the transfer */
		1037	prev_sv = SvRV (coro_current);
		1038	SvRV_set (coro_current, next_sv);
		1039	ta->prev = SvSTATE (prev_sv);
		1040
		1041	assert (ta->next->flags & CF_READY);
		1042	ta->next->flags &= ~CF_READY;
		1043
		1044	LOCK;
		1045	free_coro_mortal ();
		1046	coro_mortal = prev_sv;
		1047	UNLOCK;
		1048	}
		1049
		1050	static void
		1051	prepare_cede (struct transfer_args *ta)
		1052	{
		1053	api_ready (coro_current);
		1054	prepare_schedule (ta);
		1055	}
		1056
		1057	static int
		1058	prepare_cede_notself (struct transfer_args *ta)
		1059	{
		1060	if (coro_nready)
		1061	{
		1062	SV *prev = SvRV (coro_current);
		1063	prepare_schedule (ta);
		1064	api_ready (prev);
		1065	return 1;
		1066	}
		1067	else
		1068	return 0;
868	}	1069	}
869		1070
870	static void	1071	static void
871	api_schedule (void)	1072	api_schedule (void)
872	{	1073	{
873	dTHX;	1074	struct transfer_args ta;
874		1075
875	SV prev, next;	1076	prepare_schedule (&ta);
876		1077	TRANSFER (ta);
877	LOCK;
878
879	prev = SvRV (GvSV (coro_current));
880	next = coro_deq (aTHX_ PRIO_MIN);
881
882	if (!next)
883	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
884
885	/* free this only after the transfer */
886	coro_mortal = prev;
887	SV_CORO (prev, "Coro::schedule");
888
889	SvRV (GvSV (coro_current)) = next;
890
891	SV_CORO (next, "Coro::schedule");
892
893	UNLOCK;
894
895	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
896	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
897	}	1078	}
898		1079
899	static void	1080	static int
900	api_cede (void)	1081	api_cede (void)
901	{	1082	{
902	dTHX;	1083	struct transfer_args ta;
903		1084
904	LOCK;	1085	prepare_cede (&ta);
905	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
906	UNLOCK;
907		1086
908	api_schedule ();	1087	if (ta.prev != ta.next)
		1088	{
		1089	TRANSFER (ta);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
		1094	}
		1095
		1096	static int
		1097	api_cede_notself (void)
		1098	{
		1099	struct transfer_args ta;
		1100
		1101	if (prepare_cede_notself (&ta))
		1102	{
		1103	TRANSFER (ta);
		1104	return 1;
		1105	}
		1106	else
		1107	return 0;
909	}	1108	}
910		1109
911	MODULE = Coro::State PACKAGE = Coro::State	1110	MODULE = Coro::State PACKAGE = Coro::State
912		1111
913	PROTOTYPES: ENABLE	1112	PROTOTYPES: DISABLE
914		1113
915	BOOT:	1114	BOOT:
916	{ /* {} necessary for stoopid perl-5.6.x */	1115	{
917	#ifdef USE_ITHREADS	1116	#ifdef USE_ITHREADS
918	MUTEX_INIT (&coro_mutex);	1117	MUTEX_INIT (&coro_mutex);
919	#endif	1118	#endif
920	BOOT_PAGESIZE;	1119	BOOT_PAGESIZE;
921		1120
922	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
923	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
924	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1121	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
925		1122
926	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1123	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
927	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1124	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
928	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1125	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1126	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
929	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1127	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
930		1128
931	main_mainstack = PL_mainstack;	1129	main_mainstack = PL_mainstack;
932		1130
933	coroapi.ver = CORO_API_VERSION;	1131	coroapi.ver = CORO_API_VERSION;
934	coroapi.transfer = api_transfer;	1132	coroapi.transfer = api_transfer;
935	}
936		1133
937	Coro::State	1134	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
938	_newprocess(args)	1135	}
939	SV * args	1136
940	PROTOTYPE: $	1137	SV *
		1138	new (char *klass, ...)
941	CODE:	1139	CODE:
942	Coro__State coro;	1140	{
		1141	struct coro *coro;
		1142	HV *hv;
		1143	int i;
943		1144
944	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
945	croak ("Coro::State::_newprocess expects an arrayref");
946
947	Newz (0, coro, 1, struct coro);	1145	Newz (0, coro, 1, struct coro);
		1146	coro->args = newAV ();
		1147	coro->save = CORO_SAVE_ALL;
		1148	coro->flags = CF_NEW;
948		1149
949	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1150	hv = newHV ();
950	/coro->mainstack = 0; //actual work is done inside transfer /	1151	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
951	/coro->stack = 0;/	1152	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
952		1153
953	/* same as JMPENV_BOOTSTRAP */	1154	for (i = 1; i < items; i++)
954	/* we might be able to recycle start_env, but safe is safe */	1155	av_push (coro->args, newSVsv (ST (i)));
955	/Zero(&coro->start_env, 1, JMPENV);/	1156	}
956	coro->start_env.je_ret = -1;
957	coro->start_env.je_mustcatch = TRUE;
958
959	RETVAL = coro;
960	OUTPUT:	1157	OUTPUT:
961	RETVAL	1158	RETVAL
962		1159
		1160	int
		1161	save (SV *coro, int new_save = -1)
		1162	CODE:
		1163	RETVAL = api_save (coro, new_save);
		1164	OUTPUT:
		1165	RETVAL
		1166
963	void	1167	void
964	transfer(prev, next, flags)	1168	_set_stacklevel (...)
965	SV *prev	1169	ALIAS:
966	SV *next	1170	Coro::State::transfer = 1
967	int flags	1171	Coro::schedule = 2
968	PROTOTYPE: @	1172	Coro::cede = 3
		1173	Coro::cede_notself = 4
969	CODE:	1174	CODE:
970	PUTBACK;	1175	{
971	SV_CORO (next, "Coro::transfer");	1176	struct transfer_args ta;
972	SV_CORO (prev, "Coro::transfer");	1177
973	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1178	switch (ix)
974	SPAGAIN;	1179	{
		1180	case 0:
		1181	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1182	ta.next = 0;
		1183	break;
		1184
		1185	case 1:
		1186	if (items != 2)
		1187	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1188
		1189	prepare_transfer (&ta, ST (0), ST (1));
		1190	break;
		1191
		1192	case 2:
		1193	prepare_schedule (&ta);
		1194	break;
		1195
		1196	case 3:
		1197	prepare_cede (&ta);
		1198	break;
		1199
		1200	case 4:
		1201	if (!prepare_cede_notself (&ta))
		1202	XSRETURN_EMPTY;
		1203
		1204	break;
		1205	}
		1206
		1207	BARRIER;
		1208	TRANSFER (ta);
		1209
		1210	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1211	XSRETURN_YES;
		1212	}
		1213
		1214	bool
		1215	_destroy (SV *coro_sv)
		1216	CODE:
		1217	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
		1218	OUTPUT:
		1219	RETVAL
975		1220
976	void	1221	void
977	DESTROY(coro)
978	Coro::State coro
979	CODE:
980
981	if (coro->mainstack && coro->mainstack != main_mainstack)
982	{
983	struct coro temp;
984
985	PUTBACK;
986	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
987	LOAD (aTHX_ coro);
988	SPAGAIN;
989
990	destroy_stacks (aTHX);
991
992	LOAD ((&temp)); /* this will get rid of defsv etc.. */
993	SPAGAIN;
994
995	coro->mainstack = 0;
996	}
997
998	deallocate_stack (coro);
999	SvREFCNT_dec (coro->args);
1000	Safefree (coro);
1001
1002	void
1003	_exit(code)	1222	_exit (code)
1004	int code	1223	int code
1005	PROTOTYPE: $	1224	PROTOTYPE: $
1006	CODE:	1225	CODE:
1007	_exit (code);	1226	_exit (code);
1008		1227
1009	MODULE = Coro::State PACKAGE = Coro::Cont	1228	int
		1229	cctx_count ()
		1230	CODE:
		1231	RETVAL = cctx_count;
		1232	OUTPUT:
		1233	RETVAL
1010		1234
1011	# this is slightly dirty (should expose a c-level api)	1235	int
1012		1236	cctx_idle ()
1013	void	1237	CODE:
1014	yield(...)	1238	RETVAL = cctx_idle;
1015	PROTOTYPE: @	1239	OUTPUT:
1016	CODE:	1240	RETVAL
1017	SV *yieldstack;
1018	SV *sv;
1019	AV *defav = GvAV (PL_defgv);
1020	struct coro prev, next;
1021
1022	yieldstack = *hv_fetch (
1023	(HV *)SvRV (GvSV (coro_current)),
1024	"yieldstack", sizeof ("yieldstack") - 1,
1025	0
1026	);
1027
1028	/* set up @_ -- ugly */
1029	av_clear (defav);
1030	av_fill (defav, items - 1);
1031	while (items--)
1032	av_store (defav, items, SvREFCNT_inc (ST(items)));
1033
1034	sv = av_pop ((AV *)SvRV (yieldstack));
1035	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1036	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1037	SvREFCNT_dec (sv);
1038
1039	transfer (aTHX_ prev, next, 0);
1040		1241
1041	MODULE = Coro::State PACKAGE = Coro	1242	MODULE = Coro::State PACKAGE = Coro
1042		1243
1043	# this is slightly dirty (should expose a c-level api)
1044
1045	BOOT:	1244	BOOT:
1046	{	1245	{
1047	int i;	1246	int i;
		1247
1048	HV *stash = gv_stashpv ("Coro", TRUE);	1248	coro_stash = gv_stashpv ("Coro", TRUE);
1049		1249
1050	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1250	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1051	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1251	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1052	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1252	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1053	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1253	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1054	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1254	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1055	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1255	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1056		1256
1057	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1257	coro_current = get_sv ("Coro::current", FALSE);
1058	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1258	SvREADONLY_on (coro_current);
1059		1259
1060	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1260	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1061	coro_ready[i] = newAV ();	1261	coro_ready[i] = newAV ();
1062		1262
1063	{	1263	{
1064	SV *sv = perl_get_sv("Coro::API", 1);	1264	SV *sv = perl_get_sv("Coro::API", 1);
1065		1265
1066	coroapi.schedule = api_schedule;	1266	coroapi.schedule = api_schedule;
		1267	coroapi.save = api_save;
1067	coroapi.cede = api_cede;	1268	coroapi.cede = api_cede;
		1269	coroapi.cede_notself = api_cede_notself;
1068	coroapi.ready = api_ready;	1270	coroapi.ready = api_ready;
		1271	coroapi.is_ready = api_is_ready;
1069	coroapi.nready = &coro_nready;	1272	coroapi.nready = &coro_nready;
1070	coroapi.current = coro_current;	1273	coroapi.current = coro_current;
1071		1274
1072	GCoroAPI = &coroapi;	1275	GCoroAPI = &coroapi;
1073	sv_setiv(sv, (IV)&coroapi);	1276	sv_setiv (sv, (IV)&coroapi);
1074	SvREADONLY_on(sv);	1277	SvREADONLY_on (sv);
1075	}	1278	}
1076	}	1279	}
1077		1280
1078	#if !PERL_MICRO
1079
1080	void	1281	void
1081	ready(self)	1282	_set_current (SV *current)
1082	SV * self
1083	PROTOTYPE: $	1283	PROTOTYPE: $
1084	CODE:	1284	CODE:
1085	api_ready (self);	1285	SvREFCNT_dec (SvRV (coro_current));
1086		1286	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1087	#endif
1088		1287
1089	int	1288	int
		1289	prio (Coro::State coro, int newprio = 0)
		1290	ALIAS:
		1291	nice = 1
		1292	CODE:
		1293	{
		1294	RETVAL = coro->prio;
		1295
		1296	if (items > 1)
		1297	{
		1298	if (ix)
		1299	newprio = coro->prio - newprio;
		1300
		1301	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1302	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1303
		1304	coro->prio = newprio;
		1305	}
		1306	}
		1307	OUTPUT:
		1308	RETVAL
		1309
		1310	SV *
		1311	ready (SV *self)
		1312	PROTOTYPE: $
		1313	CODE:
		1314	RETVAL = boolSV (api_ready (self));
		1315	OUTPUT:
		1316	RETVAL
		1317
		1318	SV *
		1319	is_ready (SV *self)
		1320	PROTOTYPE: $
		1321	CODE:
		1322	RETVAL = boolSV (api_is_ready (self));
		1323	OUTPUT:
		1324	RETVAL
		1325
		1326	int
1090	nready(...)	1327	nready (...)
1091	PROTOTYPE:	1328	PROTOTYPE:
1092	CODE:	1329	CODE:
1093	RETVAL = coro_nready;	1330	RETVAL = coro_nready;
1094	OUTPUT:	1331	OUTPUT:
1095	RETVAL	1332	RETVAL
1096		1333
1097	void	1334	MODULE = Coro::State PACKAGE = Coro::AIO
1098	schedule(...)	1335
1099	PROTOTYPE:	1336	SV *
		1337	_get_state ()
1100	CODE:	1338	CODE:
1101	api_schedule ();
1102
1103	void
1104	cede(...)
1105	PROTOTYPE:
1106	CODE:
1107	api_cede ();
1108
1109	# and these are hacks
1110	SV *
1111	_aio_get_state ()
1112	CODE:
1113	{	1339	{
1114	struct {	1340	struct io_state *data;
1115	int errorno;
1116	int laststype;
1117	int laststatval;
1118	Stat_t statcache;
1119	} data;
1120		1341
		1342	RETVAL = newSV (sizeof (struct io_state));
		1343	data = (struct io_state *)SvPVX (RETVAL);
		1344	SvCUR_set (RETVAL, sizeof (struct io_state));
		1345	SvPOK_only (RETVAL);
		1346
1121	data.errorno = errno;	1347	data->errorno = errno;
1122	data.laststype = PL_laststype;	1348	data->laststype = PL_laststype;
1123	data.laststatval = PL_laststatval;	1349	data->laststatval = PL_laststatval;
1124	data.statcache = PL_statcache;	1350	data->statcache = PL_statcache;
1125
1126	RETVAL = newSVpvn ((char *)&data, sizeof data);
1127	}	1351	}
1128	OUTPUT:	1352	OUTPUT:
1129	RETVAL	1353	RETVAL
1130		1354
1131	void	1355	void
1132	_aio_set_state (char *data_)	1356	_set_state (char *data_)
1133	PROTOTYPE: $	1357	PROTOTYPE: $
1134	CODE:	1358	CODE:
1135	{	1359	{
1136	struct {	1360	struct io_state data = (void )data_;
1137	int errorno;
1138	int laststype;
1139	int laststatval;
1140	Stat_t statcache;
1141	} data = (void )data_;
1142		1361
1143	errno = data->errorno;	1362	errno = data->errorno;
1144	PL_laststype = data->laststype;	1363	PL_laststype = data->laststype;
1145	PL_laststatval = data->laststatval;	1364	PL_laststatval = data->laststatval;
1146	PL_statcache = data->statcache;	1365	PL_statcache = data->statcache;
1147	}	1366	}
		1367

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Comparing Coro/Coro/State.xs (file contents): Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs. Revision 1.135 by root, Fri Jan 5 18:25:51 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.135 by root, Fri Jan 5 18:25:51 2007 UTC