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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.85 by root, Fri Nov 24 00:32:04 2006 UTC vs.
Revision 1.140 by root, Sat Jan 20 19:52:15 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	/* helper storage struct for Coro::AIO */
		118	struct io_state
		119	{
		120	int errorno;
		121	I32 laststype;
		122	int laststatval;
		123	Stat_t statcache;
		124	};
		125
85	static struct CoroAPI coroapi;	126	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	127	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	128	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 */	129	static SV coro_mortal; / will be freed after next transfer */
91		130
92	/* this is actually not only the c stack but also c registers etc... */	131	static struct coro_cctx *cctx_first;
		132	static int cctx_count, cctx_idle;
		133
		134	/* this is a structure representing a c-level coroutine */
93	typedef struct {	135	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	136	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		137
98	coro_context cctx;	138	/* the stack */
99
100	void *sptr;	139	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
102	} coro_stack;
103		141
		142	/* cpu state */
		143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		145	JMPENV *top_env;
		146	coro_context cctx;
		147
		148	int inuse;
		149
		150	#if USE_VALGRIND
		151	int valgrind_id;
		152	#endif
		153	} coro_cctx;
		154
		155	enum {
		156	CF_RUNNING = 0x0001, /* coroutine is running */
		157	CF_READY = 0x0002, /* coroutine is ready */
		158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		160	};
		161
		162	/* this is a structure representing a perl-level coroutine */
104	struct coro {	163	struct coro {
105	/* the optional C context */	164	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	165	coro_cctx *cctx;
107	void *cursp;
108	int gencnt;
109
110	/* optionally saved, might be zero */
111	AV *defav;
112	SV *defsv;
113	SV *errsv;
114
115	/* saved global state not related to stacks */
116	U8 dowarn;
117	I32 in_eval;
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148	JMPENV *top_env;
149		166
150	/* data associated with this coroutine (initial args) */	167	/* data associated with this coroutine (initial args) */
151	AV *args;	168	AV *args;
		169	int refcnt;
		170	int save; /* CORO_SAVE flags */
		171	int flags; /* CF_ flags */
		172
		173	/* optionally saved, might be zero */
		174	AV defav; / @_ */
		175	SV defsv; / $_ */
		176	SV errsv; / $@ */
		177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
		179
		180	#define VAR(name,type) type name;
		181	# include "state.h"
		182	#undef VAR
		183
		184	/* coro process data */
		185	int prio;
152	};	186	};
153		187
154	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
155	typedef struct coro *Coro__State_or_hashref;	189	typedef struct coro *Coro__State_or_hashref;
156		190
		191	/ Coro ******************************************************************/
		192
		193	#define PRIO_MAX 3
		194	#define PRIO_HIGH 1
		195	#define PRIO_NORMAL 0
		196	#define PRIO_LOW -1
		197	#define PRIO_IDLE -3
		198	#define PRIO_MIN -4
		199
		200	/* for Coro.pm */
		201	static SV *coro_current;
		202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		203	static int coro_nready;
		204
		205	/ lowlevel stuff ********************************************************/
		206
157	static AV *	207	static AV *
158	coro_clone_padlist (pTHX_ CV *cv)	208	coro_clone_padlist (CV *cv)
159	{	209	{
160	AV *padlist = CvPADLIST (cv);	210	AV *padlist = CvPADLIST (cv);
161	AV newpadlist, newpad;	211	AV newpadlist, newpad;
162		212
163	newpadlist = newAV ();	213	newpadlist = newAV ();
164	AvREAL_off (newpadlist);	214	AvREAL_off (newpadlist);
165	#if PERL_VERSION < 9	215	#if PERL_VERSION_ATLEAST (5,9,0)
		216	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		217	#else
166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	218	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
167	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
169	#endif	219	#endif
170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	220	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
171	--AvFILLp (padlist);	221	--AvFILLp (padlist);
172		222
173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	223	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
175		225
176	return newpadlist;	226	return newpadlist;
177	}	227	}
178		228
179	static void	229	static void
180	free_padlist (pTHX_ AV *padlist)	230	free_padlist (AV *padlist)
181	{	231	{
182	/* may be during global destruction */	232	/* may be during global destruction */
183	if (SvREFCNT (padlist))	233	if (SvREFCNT (padlist))
184	{	234	{
185	I32 i = AvFILLp (padlist);	235	I32 i = AvFILLp (padlist);
…		…
206	AV *padlist;	256	AV *padlist;
207	AV av = (AV )mg->mg_obj;	257	AV av = (AV )mg->mg_obj;
208		258
209	/* casting is fun. */	259	/* casting is fun. */
210	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	260	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
211	free_padlist (aTHX_ padlist);	261	free_padlist (padlist);
212		262
213	SvREFCNT_dec (av);	263	SvREFCNT_dec (av);
214		264
215	return 0;	265	return 0;
216	}	266	}
217		267
218	#define PERL_MAGIC_coro PERL_MAGIC_ext	268	#define PERL_MAGIC_coro PERL_MAGIC_ext
219		269
220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	270	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
221		271
		272	#define CORO_MAGIC(cv) \
		273	SvMAGIC (cv) \
		274	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		275	? SvMAGIC (cv) \
		276	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		277	: 0
		278
222	/* the next two functions merely cache the padlists */	279	/* the next two functions merely cache the padlists */
223	static void	280	static void
224	get_padlist (pTHX_ CV *cv)	281	get_padlist (CV *cv)
225	{	282	{
226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	283	MAGIC *mg = CORO_MAGIC (cv);
		284	AV *av;
227		285
228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
230	else	288	else
231	{	289	{
232	#if 0	290	#if PREFER_PERL_FUNCTIONS
233	/* this should work - but it doesn't :( */	291	/* this is probably cleaner, but also slower? */
234	CV *cp = Perl_cv_clone (aTHX_ cv);	292	CV *cp = Perl_cv_clone (cv);
235	CvPADLIST (cv) = CvPADLIST (cp);	293	CvPADLIST (cv) = CvPADLIST (cp);
236	CvPADLIST (cp) = 0;	294	CvPADLIST (cp) = 0;
237	SvREFCNT_dec (cp);	295	SvREFCNT_dec (cp);
238	#else	296	#else
239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	297	CvPADLIST (cv) = coro_clone_padlist (cv);
240	#endif	298	#endif
241	}	299	}
242	}	300	}
243		301
244	static void	302	static void
245	put_padlist (pTHX_ CV *cv)	303	put_padlist (CV *cv)
246	{	304	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	305	MAGIC *mg = CORO_MAGIC (cv);
		306	AV *av;
248		307
249	if (!mg)	308	if (!mg)
250	{	309	{
251	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	310	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
252	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	311	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
253	mg->mg_virtual = &vtbl_coro;	312	mg->mg_virtual = &vtbl_coro;
254	mg->mg_obj = (SV *)newAV ();	313	mg->mg_obj = (SV *)newAV ();
255	}	314	}
256		315
257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	316	av = (AV *)mg->mg_obj;
		317
		318	if (AvFILLp (av) >= AvMAX (av))
		319	av_extend (av, AvMAX (av) + 1);
		320
		321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
258	}	322	}
		323
		324	/ load & save, init *****************************************************/
259		325
260	#define SB do {	326	#define SB do {
261	#define SE } while (0)	327	#define SE } while (0)
262		328
263	#define LOAD(state) load_state(aTHX_ (state));
264	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
265
266	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
267		330
268	static void	331	static void
269	load_state(pTHX_ Coro__State c)	332	load_perl (Coro__State c)
270	{	333	{
271	PL_dowarn = c->dowarn;	334	#define VAR(name,type) PL_ ## name = c->name;
272	PL_in_eval = c->in_eval;	335	# include "state.h"
273		336	#undef VAR
274	PL_curstackinfo = c->curstackinfo;
275	PL_curstack = c->curstack;
276	PL_mainstack = c->mainstack;
277	PL_stack_sp = c->stack_sp;
278	PL_op = c->op;
279	PL_curpad = c->curpad;
280	PL_comppad = c->comppad;
281	PL_compcv = c->compcv;
282	PL_stack_base = c->stack_base;
283	PL_stack_max = c->stack_max;
284	PL_tmps_stack = c->tmps_stack;
285	PL_tmps_floor = c->tmps_floor;
286	PL_tmps_ix = c->tmps_ix;
287	PL_tmps_max = c->tmps_max;
288	PL_markstack = c->markstack;
289	PL_markstack_ptr = c->markstack_ptr;
290	PL_markstack_max = c->markstack_max;
291	PL_scopestack = c->scopestack;
292	PL_scopestack_ix = c->scopestack_ix;
293	PL_scopestack_max = c->scopestack_max;
294	PL_savestack = c->savestack;
295	PL_savestack_ix = c->savestack_ix;
296	PL_savestack_max = c->savestack_max;
297	#if PERL_VERSION < 9
298	PL_retstack = c->retstack;
299	PL_retstack_ix = c->retstack_ix;
300	PL_retstack_max = c->retstack_max;
301	#endif
302	PL_curpm = c->curpm;
303	PL_curcop = c->curcop;
304	PL_top_env = c->top_env;
305		337
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		341	if (c->irssv)
		342	{
		343	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		344	SvREFCNT_dec (c->irssv);
		345	else
		346	{
		347	REPLACE_SV (PL_rs, c->irssv);
		348	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		349	sv_setsv (c->irssv_sv, PL_rs);
		350	}
		351	}
309		352
310	{	353	{
311	dSP;	354	dSP;
312	CV *cv;	355	CV *cv;
313		356
314	/* now do the ugly restore mess */	357	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	358	while ((cv = (CV *)POPs))
316	{	359	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	360	put_padlist (cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	361	CvDEPTH (cv) = PTR2IV (POPs);
323	}	362	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	363	}
327		364
328	PUTBACK;	365	PUTBACK;
329	}	366	}
330	}	367	}
331		368
332	static void	369	static void
333	save_state(pTHX_ Coro__State c, int flags)	370	save_perl (Coro__State c)
334	{	371	{
335	{	372	{
336	dSP;	373	dSP;
337	I32 cxix = cxstack_ix;	374	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	375	PERL_CONTEXT *ccstk = cxstack;
…		…
341	/*	378	/*
342	* the worst thing you can imagine happens first - we have to save	379	* the worst thing you can imagine happens first - we have to save
343	* (and reinitialize) all cv's in the whole callchain :(	380	* (and reinitialize) all cv's in the whole callchain :(
344	*/	381	*/
345		382
		383	EXTEND (SP, 3 + 1);
346	PUSHs (Nullsv);	384	PUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	385	/* this loop was inspired by pp_caller */
348	for (;;)	386	for (;;)
349	{	387	{
350	while (cxix >= 0)	388	while (cxix >= 0)
351	{	389	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	390	PERL_CONTEXT *cx = &ccstk[cxix--];
353		391
354	if (CxTYPE(cx) == CXt_SUB)	392	if (CxTYPE (cx) == CXt_SUB)
355	{	393	{
356	CV *cv = cx->blk_sub.cv;	394	CV *cv = cx->blk_sub.cv;
		395
357	if (CvDEPTH(cv))	396	if (CvDEPTH (cv))
358	{	397	{
359	EXTEND (SP, CvDEPTH(cv)*2);	398	EXTEND (SP, 3);
360
361	while (--CvDEPTH(cv))
362	{
363	/* this tells the restore code to increment CvDEPTH */
364	PUSHs (Nullsv);
365	PUSHs ((SV *)cv);
366	}
367
368	PUSHs ((SV *)CvPADLIST(cv));	399	PUSHs ((SV *)CvPADLIST (cv));
		400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	401	PUSHs ((SV *)cv);
370		402
		403	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	404	get_padlist (cv);
372	}	405	}
373	}	406	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE(cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	407	}
383		408
384	if (top_si->si_type == PERLSI_MAIN)	409	if (top_si->si_type == PERLSI_MAIN)
385	break;	410	break;
386		411
…		…
390	}	415	}
391		416
392	PUTBACK;	417	PUTBACK;
393	}	418	}
394		419
395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	420	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
396	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
398		424
399	c->dowarn = PL_dowarn;	425	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	426	# include "state.h"
401		427	#undef VAR
402	c->curstackinfo = PL_curstackinfo;
403	c->curstack = PL_curstack;
404	c->mainstack = PL_mainstack;
405	c->stack_sp = PL_stack_sp;
406	c->op = PL_op;
407	c->curpad = PL_curpad;
408	c->comppad = PL_comppad;
409	c->compcv = PL_compcv;
410	c->stack_base = PL_stack_base;
411	c->stack_max = PL_stack_max;
412	c->tmps_stack = PL_tmps_stack;
413	c->tmps_floor = PL_tmps_floor;
414	c->tmps_ix = PL_tmps_ix;
415	c->tmps_max = PL_tmps_max;
416	c->markstack = PL_markstack;
417	c->markstack_ptr = PL_markstack_ptr;
418	c->markstack_max = PL_markstack_max;
419	c->scopestack = PL_scopestack;
420	c->scopestack_ix = PL_scopestack_ix;
421	c->scopestack_max = PL_scopestack_max;
422	c->savestack = PL_savestack;
423	c->savestack_ix = PL_savestack_ix;
424	c->savestack_max = PL_savestack_max;
425	#if PERL_VERSION < 9
426	c->retstack = PL_retstack;
427	c->retstack_ix = PL_retstack_ix;
428	c->retstack_max = PL_retstack_max;
429	#endif
430	c->curpm = PL_curpm;
431	c->curcop = PL_curcop;
432	c->top_env = PL_top_env;
433	}	428	}
434		429
435	/*	430	/*
436	* allocate various perl stacks. This is an exact copy	431	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	432	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	433	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	434	* not usually need a lot of stackspace.
440	*/	435	*/
		436	#if PREFER_PERL_FUNCTIONS
		437	# define coro_init_stacks init_stacks
		438	#else
441	static void	439	static void
442	coro_init_stacks (pTHX)	440	coro_init_stacks ()
443	{	441	{
444	LOCK;
445
446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
447	PL_curstackinfo->si_type = PERLSI_MAIN;	443	PL_curstackinfo->si_type = PERLSI_MAIN;
448	PL_curstack = PL_curstackinfo->si_stack;	444	PL_curstack = PL_curstackinfo->si_stack;
449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	445	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
450		446
451	PL_stack_base = AvARRAY(PL_curstack);	447	PL_stack_base = AvARRAY(PL_curstack);
452	PL_stack_sp = PL_stack_base;	448	PL_stack_sp = PL_stack_base;
453	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	449	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
454		450
455	New(50,PL_tmps_stack,96,SV*);	451	New(50,PL_tmps_stack,128,SV*);
456	PL_tmps_floor = -1;	452	PL_tmps_floor = -1;
457	PL_tmps_ix = -1;	453	PL_tmps_ix = -1;
458	PL_tmps_max = 96;	454	PL_tmps_max = 128;
459		455
460	New(54,PL_markstack,16,I32);	456	New(54,PL_markstack,32,I32);
461	PL_markstack_ptr = PL_markstack;	457	PL_markstack_ptr = PL_markstack;
462	PL_markstack_max = PL_markstack + 16;	458	PL_markstack_max = PL_markstack + 32;
463		459
464	#ifdef SET_MARK_OFFSET	460	#ifdef SET_MARK_OFFSET
465	SET_MARK_OFFSET;	461	SET_MARK_OFFSET;
466	#endif	462	#endif
467		463
468	New(54,PL_scopestack,16,I32);	464	New(54,PL_scopestack,32,I32);
469	PL_scopestack_ix = 0;	465	PL_scopestack_ix = 0;
470	PL_scopestack_max = 16;	466	PL_scopestack_max = 32;
471		467
472	New(54,PL_savestack,96,ANY);	468	New(54,PL_savestack,64,ANY);
473	PL_savestack_ix = 0;	469	PL_savestack_ix = 0;
474	PL_savestack_max = 96;	470	PL_savestack_max = 64;
475		471
476	#if PERL_VERSION < 9	472	#if !PERL_VERSION_ATLEAST (5,9,0)
477	New(54,PL_retstack,8,OP*);	473	New(54,PL_retstack,16,OP*);
478	PL_retstack_ix = 0;	474	PL_retstack_ix = 0;
479	PL_retstack_max = 8;	475	PL_retstack_max = 16;
480	#endif	476	#endif
481
482	UNLOCK;
483	}	477	}
		478	#endif
484		479
485	/*	480	/*
486	* destroy the stacks, the callchain etc...	481	* destroy the stacks, the callchain etc...
487	*/	482	*/
488	static void	483	static void
489	destroy_stacks(pTHX)	484	coro_destroy_stacks ()
490	{	485	{
491	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
492	{	487	{
493	/* is this ugly, I ask? */	488	/* restore all saved variables and stuff */
494	LEAVE_SCOPE (0);	489	LEAVE_SCOPE (0);
		490	assert (PL_tmps_floor == -1);
495		491
496	/* sure it is, but more important: is it correct?? :/ */	492	/* free all temporaries */
497	FREETMPS;	493	FREETMPS;
		494	assert (PL_tmps_ix == -1);
498		495
		496	/* unwind all extra stacks */
499	/POPSTACK_TO (PL_mainstack);//D//use/	497	POPSTACK_TO (PL_mainstack);
		498
		499	/* unwind main stack */
		500	dounwind (-1);
500	}	501	}
501		502
502	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
503	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
504		505
505	while (PL_curstackinfo)	506	while (PL_curstackinfo)
506	{	507	{
507	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
508		509
509	{ /D//remove/
510	dSP;
511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
512	PUTBACK; /* possibly superfluous */
513	}
514
515	if (!IN_DESTRUCT)	510	if (!IN_DESTRUCT)
516	{
517	dounwind (-1);/D//remove/
518	SvREFCNT_dec (PL_curstackinfo->si_stack);	511	SvREFCNT_dec (PL_curstackinfo->si_stack);
519	}
520		512
521	Safefree (PL_curstackinfo->si_cxstack);	513	Safefree (PL_curstackinfo->si_cxstack);
522	Safefree (PL_curstackinfo);	514	Safefree (PL_curstackinfo);
523	PL_curstackinfo = p;	515	PL_curstackinfo = p;
524	}	516	}
525		517
526	Safefree (PL_tmps_stack);	518	Safefree (PL_tmps_stack);
527	Safefree (PL_markstack);	519	Safefree (PL_markstack);
528	Safefree (PL_scopestack);	520	Safefree (PL_scopestack);
529	Safefree (PL_savestack);	521	Safefree (PL_savestack);
530	#if PERL_VERSION < 9	522	#if !PERL_VERSION_ATLEAST (5,9,0)
531	Safefree (PL_retstack);	523	Safefree (PL_retstack);
532	#endif	524	#endif
533	}	525	}
534		526
535	static void	527	/ coroutine stack handling **********************************************/
536	allocate_stack (Coro__State ctx, int alloc)
537	{
538	coro_stack *stack;
539		528
540	New (0, stack, 1, coro_stack);
541
542	stack->refcnt = 1;
543	stack->usecnt = 1;
544	stack->gencnt = ctx->gencnt = 0;
545
546	if (alloc)
547	{
548	#if HAVE_MMAP
549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
551	if (stack->sptr != (void *)-1)
552	{
553	# if STACKGUARD
554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
555	# endif
556	}
557	else
558	#endif
559	{
560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
561	New (0, stack->sptr, STACKSIZE, long);
562	}
563	}
564	else
565	stack->sptr = 0;
566
567	ctx->stack = stack;
568	}
569
570	static void	529	static void
571	deallocate_stack (Coro__State ctx)	530	setup_coro (struct coro *coro)
572	{
573	coro_stack *stack = ctx->stack;
574
575	ctx->stack = 0;
576
577	if (stack)
578	{
579	if (!--stack->refcnt)
580	{
581	#ifdef HAVE_MMAP
582	if (stack->ssize > 0 && stack->sptr)
583	munmap (stack->sptr, stack->ssize);
584	else
585	#endif
586	Safefree (stack->sptr);
587
588	Safefree (stack);
589	}
590	else if (ctx->gencnt == stack->gencnt)
591	--stack->usecnt;
592	}
593	}
594
595	static void
596	setup_coro (void *arg)
597	{	531	{
598	/*	532	/*
599	* emulate part of the perl startup here.	533	* emulate part of the perl startup here.
600	*/	534	*/
601	dTHX;	535
		536	coro_init_stacks ();
		537
		538	PL_curcop = &PL_compiling;
		539	PL_in_eval = EVAL_NULL;
		540	PL_curpm = 0;
		541	PL_localizing = 0;
		542	PL_dirty = 0;
		543	PL_restartop = 0;
		544
		545	{
		546	dSP;
		547	LOGOP myop;
		548
		549	SvREFCNT_dec (GvAV (PL_defgv));
		550	GvAV (PL_defgv) = coro->args; coro->args = 0;
		551
		552	Zero (&myop, 1, LOGOP);
		553	myop.op_next = Nullop;
		554	myop.op_flags = OPf_WANT_VOID;
		555
		556	PUSHMARK (SP);
		557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		558	PUTBACK;
		559	PL_op = (OP *)&myop;
		560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		561	SPAGAIN;
		562	}
		563
		564	ENTER; /* necessary e.g. for dounwind */
		565	}
		566
		567	static void
		568	free_coro_mortal ()
		569	{
		570	if (coro_mortal)
		571	{
		572	SvREFCNT_dec (coro_mortal);
		573	coro_mortal = 0;
		574	}
		575	}
		576
		577	/* inject a fake call to Coro::State::_cctx_init into the execution */
		578	static void NOINLINE
		579	prepare_cctx (coro_cctx *cctx)
		580	{
602	dSP;	581	dSP;
603	Coro__State ctx = (Coro__State)arg;	582	LOGOP myop;
604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
605		583
606	coro_init_stacks (aTHX);	584	Zero (&myop, 1, LOGOP);
607	/PL_curcop = 0;/	585	myop.op_next = PL_op;
608	/PL_in_eval = PL_in_eval;/ /* inherit */	586	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
609	SvREFCNT_dec (GvAV (PL_defgv));
610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
611		587
		588	PUSHMARK (SP);
		589	EXTEND (SP, 2);
		590	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		591	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		592	PUTBACK;
		593	PL_op = (OP *)&myop;
		594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
612	SPAGAIN;	595	SPAGAIN;
613
614	if (ctx->stack)
615	{
616	ctx->cursp = 0;
617
618	PUSHMARK(SP);
619	PUTBACK;
620	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
621
622	if (SvTRUE (ERRSV))
623	croak (NULL);
624	else
625	croak ("FATAL: CCTXT coroutine returned!");
626	}
627	else
628	{
629	UNOP myop;
630
631	Zero(&myop, 1, UNOP);
632	myop.op_next = Nullop;
633	myop.op_flags = OPf_WANT_VOID;
634
635	PL_op = (OP *)&myop;
636
637	PUSHMARK(SP);
638	XPUSHs (sub_init);
639	/*
640	* the next line is slightly wrong, as PL_op->op_next
641	* is actually being executed so we skip the first op.
642	* that doesn't matter, though, since it is only
643	* pp_nextstate and we never return...
644	* ah yes, and I don't care anyways ;)
645	*/
646	PUTBACK;
647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
648	SPAGAIN;
649
650	ENTER; /* necessary e.g. for dounwind */
651	}
652	}	596	}
653		597
654	static void	598	static void
655	continue_coro (void *arg)	599	coro_run (void *arg)
656	{	600	{
		601	/* coro_run is the alternative tail of transfer(), so unlock here. */
		602	UNLOCK;
		603
657	/*	604	/*
658	* this is a _very_ stripped down perl interpreter ;)	605	* this is a _very_ stripped down perl interpreter ;)
659	*/	606	*/
660	dTHX;
661	Coro__State ctx = (Coro__State)arg;
662
663	PL_top_env = &PL_start_env;	607	PL_top_env = &PL_start_env;
664		608
665	ctx->cursp = 0;	609	/* inject call to cctx_init */
666	PL_op = PL_op->op_next;	610	prepare_cctx ((coro_cctx *)arg);
667	CALLRUNOPS(aTHX);
668		611
		612	/* somebody will hit me for both perl_run and PL_restartop */
		613	PL_restartop = PL_op;
		614	perl_run (PL_curinterp);
		615
		616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
669	abort ();	617	abort ();
670	}	618	}
671		619
		620	static coro_cctx *
		621	cctx_new ()
		622	{
		623	coro_cctx *cctx;
		624
		625	++cctx_count;
		626
		627	Newz (0, cctx, 1, coro_cctx);
		628
		629	#if HAVE_MMAP
		630
		631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		632	/* mmap supposedly does allocate-on-write for us */
		633	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		634
		635	if (cctx->sptr == (void *)-1)
		636	{
		637	perror ("FATAL: unable to mmap stack for coroutine");
		638	_exit (EXIT_FAILURE);
		639	}
		640
		641	# if STACKGUARD
		642	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		643	# endif
		644
		645	#else
		646
		647	cctx->ssize = STACKSIZE * (long)sizeof (long);
		648	New (0, cctx->sptr, STACKSIZE, long);
		649
		650	if (!cctx->sptr)
		651	{
		652	perror ("FATAL: unable to malloc stack for coroutine");
		653	_exit (EXIT_FAILURE);
		654	}
		655
		656	#endif
		657
		658	#if USE_VALGRIND
		659	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		660	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		661	cctx->ssize + (char *)cctx->sptr
		662	);
		663	#endif
		664
		665	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		666
		667	return cctx;
		668	}
		669
		670	static void
		671	cctx_destroy (coro_cctx *cctx)
		672	{
		673	if (!cctx)
		674	return;
		675
		676	--cctx_count;
		677
		678	#if USE_VALGRIND
		679	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		680	#endif
		681
		682	#if HAVE_MMAP
		683	munmap (cctx->sptr, cctx->ssize);
		684	#else
		685	Safefree (cctx->sptr);
		686	#endif
		687
		688	Safefree (cctx);
		689	}
		690
		691	static coro_cctx *
		692	cctx_get ()
		693	{
		694	coro_cctx *cctx;
		695
		696	if (cctx_first)
		697	{
		698	cctx = cctx_first;
		699	cctx_first = cctx->next;
		700	--cctx_idle;
		701	}
		702	else
		703	{
		704	cctx = cctx_new ();
		705	PL_op = PL_op->op_next;
		706	}
		707
		708	return cctx;
		709	}
		710
		711	static void
		712	cctx_put (coro_cctx *cctx)
		713	{
		714	/* free another cctx if overlimit */
		715	if (cctx_idle >= MAX_IDLE_CCTX)
		716	{
		717	coro_cctx *first = cctx_first;
		718	cctx_first = first->next;
		719	--cctx_idle;
		720
		721	assert (!first->inuse);
		722	cctx_destroy (first);
		723	}
		724
		725	++cctx_idle;
		726	cctx->next = cctx_first;
		727	cctx_first = cctx;
		728	}
		729
		730	/ coroutine switching ***************************************************/
		731
672	/* never call directly, always through the coro_state_transfer global variable */	732	/* never call directly, always through the coro_state_transfer global variable */
673	static void	733	static void NOINLINE
674	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	734	transfer (struct coro prev, struct coro next)
675	{	735	{
676	dSTACKLEVEL;	736	dSTACKLEVEL;
677		737
		738	/* sometimes transfer is only called to set idle_sp */
		739	if (!next)
		740	{
		741	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		743	}
678	if (prev != next)	744	else if (prev != next)
679	{	745	{
680	/* has this coro been created yet? */	746	coro_cctx *prev__cctx;
681	if (next->mainstack)	747
		748	if (prev->flags & CF_NEW)
682	{	749	{
683	LOCK;	750	/* create a new empty context */
684	SAVE (prev, flags);	751	Newz (0, prev->cctx, 1, coro_cctx);
685	LOAD (next);	752	prev->cctx->inuse = 1;
686	UNLOCK;	753	prev->flags &= ~CF_NEW;
687		754	prev->flags \|= CF_RUNNING;
688	/* mark this state as in-use */
689	next->mainstack = 0;
690	next->tmps_ix = -2;
691
692	/* stacklevel changed? if yes, grab the stack for us! */
693	if (flags & TRANSFER_SAVE_CCTXT)
694	{
695	if (!prev->stack)
696	allocate_stack (prev, 0);
697	else if (prev->cursp != stacklevel
698	&& prev->stack->usecnt > 1)
699	{
700	prev->gencnt = ++prev->stack->gencnt;
701	prev->stack->usecnt = 1;
702	}
703
704	/* has our stack been invalidated? */
705	if (next->stack && next->stack->gencnt != next->gencnt)
706	{
707	deallocate_stack (next);
708	allocate_stack (next, 1);
709	coro_create (&(next->stack->cctx),
710	continue_coro, (void *)next,
711	next->stack->sptr, labs (next->stack->ssize));
712	}
713
714	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
715	prev->cursp = stacklevel;
716	/* don't add any code here */
717	}
718	else
719	next->cursp = stacklevel;
720	}	755	}
721	else if (next->tmps_ix == -2)	756
722	croak ("tried to transfer to running coroutine");	757	/TODO: must not croak here /
		758	if (!prev->flags & CF_RUNNING)
		759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		760
		761	if (next->flags & CF_RUNNING)
		762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		763
		764	if (next->flags & CF_DESTROYED)
		765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		766
		767	prev->flags &= ~CF_RUNNING;
		768	next->flags \|= CF_RUNNING;
		769
		770	LOCK;
		771
		772	if (next->flags & CF_NEW)
		773	{
		774	/* need to start coroutine */
		775	next->flags &= ~CF_NEW;
		776	/* first get rid of the old state */
		777	save_perl (prev);
		778	/* setup coroutine call */
		779	setup_coro (next);
		780	/* need a new stack */
		781	assert (!next->cctx);
		782	}
723	else	783	else
724	{	784	{
725	LOCK;	785	/* coroutine already started */
726	SAVE (prev, -1); /* first get rid of the old state */	786	save_perl (prev);
727	UNLOCK;	787	load_perl (next);
728
729	/* create the coroutine for the first time */
730	if (flags & TRANSFER_SAVE_CCTXT)
731	{
732	if (!prev->stack)
733	allocate_stack (prev, 0);
734
735	/* the new coroutine starts with start_env again */
736	PL_top_env = &PL_start_env;
737
738	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
739	{
740	setup_coro (next);
741	next->cursp = stacklevel;
742
743	prev->stack->refcnt++;
744	prev->stack->usecnt++;
745	next->stack = prev->stack;
746	next->gencnt = prev->gencnt;
747	}
748	else
749	{
750	assert (!next->stack);
751	allocate_stack (next, 1);
752	coro_create (&(next->stack->cctx),
753	setup_coro, (void *)next,
754	next->stack->sptr, labs (next->stack->ssize));
755	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
756	prev->cursp = stacklevel;
757	/* don't add any code here */
758	}
759	}
760	else
761	{
762	setup_coro (next);
763	next->cursp = stacklevel;
764	}
765	}	788	}
766	}
767		789
768	LOCK;	790	prev__cctx = prev->cctx;
769	if (coro_mortal)	791
770	{	792	/* possibly "free" the cctx */
771	SvREFCNT_dec (coro_mortal);	793	if (prev__cctx->idle_sp == STACKLEVEL)
		794	{
		795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		797
		798	prev->cctx = 0;
		799
		800	cctx_put (prev__cctx);
		801	prev__cctx->inuse = 0;
		802	}
		803
		804	if (!next->cctx)
		805	{
		806	next->cctx = cctx_get ();
		807	assert (!next->cctx->inuse);
		808	next->cctx->inuse = 1;
		809	}
		810
		811	if (prev__cctx != next->cctx)
		812	{
		813	prev__cctx->top_env = PL_top_env;
		814	PL_top_env = next->cctx->top_env;
		815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		816	}
		817
772	coro_mortal = 0;	818	free_coro_mortal ();
773	}
774	UNLOCK;	819	UNLOCK;
		820	}
775	}	821	}
776		822
777	/* use this function pointer to call the above function */	823	struct transfer_args
778	/* this is done to increase chances of the compiler not inlining the call */	824	{
779	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	825	struct coro prev, next;
		826	};
780		827
781	#define SV_CORO(sv,func) \	828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
782	do { \
783	if (SvROK (sv)) \
784	sv = SvRV (sv); \
785	\
786	if (SvTYPE (sv) == SVt_PVHV) \
787	{ \
788	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
789	\
790	if (!he) \
791	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
792	\
793	(sv) = SvRV (HeVAL(he)); \
794	} \
795	\
796	/* must also be changed inside Coro::Cont::yield */ \
797	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
798	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
799	\
800	} while(0)
801		829
802	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))	830	/ high level stuff ******************************************************/
803		831
804	static void	832	static int
		833	coro_state_destroy (struct coro *coro)
		834	{
		835	if (coro->flags & CF_DESTROYED)
		836	return 0;
		837
		838	coro->flags \|= CF_DESTROYED;
		839
		840	if (coro->flags & CF_READY)
		841	{
		842	/* reduce nready, as destroying a ready coro effectively unreadies it */
		843	/* alternative: look through all ready queues and remove the coro */
		844	LOCK;
		845	--coro_nready;
		846	UNLOCK;
		847	}
		848	else
		849	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
		850
		851	if (coro->mainstack && coro->mainstack != main_mainstack)
		852	{
		853	struct coro temp;
		854
		855	assert (!(coro->flags & CF_RUNNING));
		856
		857	Zero (&temp, 1, struct coro);
		858	temp.save = CORO_SAVE_ALL;
		859
		860	if (coro->flags & CF_RUNNING)
		861	croak ("FATAL: tried to destroy currently running coroutine");
		862
		863	save_perl (&temp);
		864	load_perl (coro);
		865
		866	coro_destroy_stacks ();
		867
		868	load_perl (&temp); /* this will get rid of defsv etc.. */
		869
		870	coro->mainstack = 0;
		871	}
		872
		873	cctx_destroy (coro->cctx);
		874	SvREFCNT_dec (coro->args);
		875
		876	return 1;
		877	}
		878
		879	static int
		880	coro_state_free (pTHX_ SV sv, MAGIC mg)
		881	{
		882	struct coro coro = (struct coro )mg->mg_ptr;
		883	mg->mg_ptr = 0;
		884
		885	if (--coro->refcnt < 0)
		886	{
		887	coro_state_destroy (coro);
		888	Safefree (coro);
		889	}
		890
		891	return 0;
		892	}
		893
		894	static int
		895	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		896	{
		897	struct coro coro = (struct coro )mg->mg_ptr;
		898
		899	++coro->refcnt;
		900
		901	return 0;
		902	}
		903
		904	static MGVTBL coro_state_vtbl = {
		905	0, 0, 0, 0,
		906	coro_state_free,
		907	0,
		908	#ifdef MGf_DUP
		909	coro_state_dup,
		910	#else
		911	# define MGf_DUP 0
		912	#endif
		913	};
		914
		915	static struct coro *
		916	SvSTATE (SV *coro)
		917	{
		918	HV *stash;
		919	MAGIC *mg;
		920
		921	if (SvROK (coro))
		922	coro = SvRV (coro);
		923
		924	stash = SvSTASH (coro);
		925	if (stash != coro_stash && stash != coro_state_stash)
		926	{
		927	/* very slow, but rare, check */
		928	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		929	croak ("Coro::State object required");
		930	}
		931
		932	mg = SvMAGIC (coro);
		933	assert (mg->mg_type == PERL_MAGIC_ext);
		934	return (struct coro *)mg->mg_ptr;
		935	}
		936
		937	static void
		938	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		939	{
		940	ta->prev = SvSTATE (prev_sv);
		941	ta->next = SvSTATE (next_sv);
		942	}
		943
		944	static void
805	api_transfer (pTHX_ SV prev, SV next, int flags)	945	api_transfer (SV prev_sv, SV next_sv)
806	{	946	{
807	SV_CORO (prev, "Coro::transfer");	947	struct transfer_args ta;
808	SV_CORO (next, "Coro::transfer");
809		948
810	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	949	prepare_transfer (&ta, prev_sv, next_sv);
		950	TRANSFER (ta);
		951	}
		952
		953	static int
		954	api_save (SV *coro_sv, int new_save)
		955	{
		956	struct coro *coro = SvSTATE (coro_sv);
		957	int old_save = coro->save;
		958
		959	if (new_save >= 0)
		960	coro->save = new_save;
		961
		962	return old_save;
811	}	963	}
812		964
813	/ Coro ******************************************************************/	965	/ Coro ******************************************************************/
814		966
815	#define PRIO_MAX 3
816	#define PRIO_HIGH 1
817	#define PRIO_NORMAL 0
818	#define PRIO_LOW -1
819	#define PRIO_IDLE -3
820	#define PRIO_MIN -4
821
822	/* for Coro.pm */
823	static GV coro_current, coro_idle;
824	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
825	static int coro_nready;
826
827	static void	967	static void
828	coro_enq (pTHX_ SV *sv)	968	coro_enq (SV *coro_sv)
829	{	969	{
830	SV **xprio;
831	int prio;
832
833	if (SvTYPE (sv) != SVt_PVHV)
834	croak ("Coro::ready tried to enqueue something that is not a coroutine");
835
836	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
837	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
838
839	prio = prio > PRIO_MAX ? PRIO_MAX
840	: prio < PRIO_MIN ? PRIO_MIN
841	: prio;
842
843	av_push (coro_ready [prio - PRIO_MIN], sv);	970	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
844	coro_nready++;
845	}	971	}
846		972
847	static SV *	973	static SV *
848	coro_deq (pTHX_ int min_prio)	974	coro_deq (int min_prio)
849	{	975	{
850	int prio = PRIO_MAX - PRIO_MIN;	976	int prio = PRIO_MAX - PRIO_MIN;
851		977
852	min_prio -= PRIO_MIN;	978	min_prio -= PRIO_MIN;
853	if (min_prio < 0)	979	if (min_prio < 0)
854	min_prio = 0;	980	min_prio = 0;
855		981
856	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	982	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
857	if (AvFILLp (coro_ready [prio]) >= 0)	983	if (AvFILLp (coro_ready [prio]) >= 0)
858	{
859	coro_nready--;
860	return av_shift (coro_ready [prio]);	984	return av_shift (coro_ready [prio]);
861	}
862		985
863	return 0;	986	return 0;
864	}	987	}
865		988
866	static void	989	static int
867	api_ready (SV *coro)	990	api_ready (SV *coro_sv)
868	{	991	{
869	dTHX;	992	struct coro *coro;
870		993
871	if (SvROK (coro))	994	if (SvROK (coro_sv))
872	coro = SvRV (coro);	995	coro_sv = SvRV (coro_sv);
		996
		997	coro = SvSTATE (coro_sv);
		998
		999	if (coro->flags & CF_READY)
		1000	return 0;
		1001
		1002	coro->flags \|= CF_READY;
873		1003
874	LOCK;	1004	LOCK;
875	coro_enq (aTHX_ SvREFCNT_inc (coro));	1005	coro_enq (SvREFCNT_inc (coro_sv));
		1006	++coro_nready;
876	UNLOCK;	1007	UNLOCK;
		1008
		1009	return 1;
		1010	}
		1011
		1012	static int
		1013	api_is_ready (SV *coro_sv)
		1014	{
		1015	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1016	}
		1017
		1018	static void
		1019	prepare_schedule (struct transfer_args *ta)
		1020	{
		1021	SV prev_sv, next_sv;
		1022
		1023	for (;;)
		1024	{
		1025	LOCK;
		1026	next_sv = coro_deq (PRIO_MIN);
		1027
		1028	/* nothing to schedule: call the idle handler */
		1029	if (!next_sv)
		1030	{
		1031	dSP;
		1032	UNLOCK;
		1033
		1034	ENTER;
		1035	SAVETMPS;
		1036
		1037	PUSHMARK (SP);
		1038	PUTBACK;
		1039	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1040
		1041	FREETMPS;
		1042	LEAVE;
		1043	continue;
		1044	}
		1045
		1046	ta->next = SvSTATE (next_sv);
		1047
		1048	/* cannot transfer to destroyed coros, skip and look for next */
		1049	if (ta->next->flags & CF_DESTROYED)
		1050	{
		1051	UNLOCK;
		1052	SvREFCNT_dec (next_sv);
		1053	/* coro_nready is already taken care of by destroy */
		1054	continue;
		1055	}
		1056
		1057	--coro_nready;
		1058	UNLOCK;
		1059	break;
		1060	}
		1061
		1062	/* free this only after the transfer */
		1063	prev_sv = SvRV (coro_current);
		1064	SvRV_set (coro_current, next_sv);
		1065	ta->prev = SvSTATE (prev_sv);
		1066
		1067	assert (ta->next->flags & CF_READY);
		1068	ta->next->flags &= ~CF_READY;
		1069
		1070	LOCK;
		1071	free_coro_mortal ();
		1072	coro_mortal = prev_sv;
		1073	UNLOCK;
		1074	}
		1075
		1076	static void
		1077	prepare_cede (struct transfer_args *ta)
		1078	{
		1079	api_ready (coro_current);
		1080	prepare_schedule (ta);
		1081	}
		1082
		1083	static int
		1084	prepare_cede_notself (struct transfer_args *ta)
		1085	{
		1086	if (coro_nready)
		1087	{
		1088	SV *prev = SvRV (coro_current);
		1089	prepare_schedule (ta);
		1090	api_ready (prev);
		1091	return 1;
		1092	}
		1093	else
		1094	return 0;
877	}	1095	}
878		1096
879	static void	1097	static void
880	api_schedule (void)	1098	api_schedule (void)
881	{	1099	{
882	dTHX;	1100	struct transfer_args ta;
883		1101
884	SV prev, next;	1102	prepare_schedule (&ta);
885		1103	TRANSFER (ta);
886	LOCK;
887
888	prev = SvRV (GvSV (coro_current));
889	next = coro_deq (aTHX_ PRIO_MIN);
890
891	if (!next)
892	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
893
894	/* free this only after the transfer */
895	coro_mortal = prev;
896	SV_CORO (prev, "Coro::schedule");
897
898	SvRV (GvSV (coro_current)) = next;
899
900	SV_CORO (next, "Coro::schedule");
901
902	UNLOCK;
903
904	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
905	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
906	}	1104	}
907		1105
908	static void	1106	static int
909	api_cede (void)	1107	api_cede (void)
910	{	1108	{
911	dTHX;	1109	struct transfer_args ta;
912		1110
913	LOCK;	1111	prepare_cede (&ta);
914	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
915	UNLOCK;
916		1112
917	api_schedule ();	1113	if (ta.prev != ta.next)
		1114	{
		1115	TRANSFER (ta);
		1116	return 1;
		1117	}
		1118	else
		1119	return 0;
		1120	}
		1121
		1122	static int
		1123	api_cede_notself (void)
		1124	{
		1125	struct transfer_args ta;
		1126
		1127	if (prepare_cede_notself (&ta))
		1128	{
		1129	TRANSFER (ta);
		1130	return 1;
		1131	}
		1132	else
		1133	return 0;
918	}	1134	}
919		1135
920	MODULE = Coro::State PACKAGE = Coro::State	1136	MODULE = Coro::State PACKAGE = Coro::State
921		1137
922	PROTOTYPES: ENABLE	1138	PROTOTYPES: DISABLE
923		1139
924	BOOT:	1140	BOOT:
925	{ /* {} necessary for stoopid perl-5.6.x */	1141	{
926	#ifdef USE_ITHREADS	1142	#ifdef USE_ITHREADS
927	MUTEX_INIT (&coro_mutex);	1143	MUTEX_INIT (&coro_mutex);
928	#endif	1144	#endif
929	BOOT_PAGESIZE;	1145	BOOT_PAGESIZE;
930		1146
931	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
932	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
933	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1147	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
934		1148
935	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1149	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
936	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1150	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
937	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1151	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1152	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
938	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1153	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
939		1154
940	main_mainstack = PL_mainstack;	1155	main_mainstack = PL_mainstack;
941		1156
942	coroapi.ver = CORO_API_VERSION;	1157	coroapi.ver = CORO_API_VERSION;
943	coroapi.transfer = api_transfer;	1158	coroapi.transfer = api_transfer;
944	}
945		1159
946	Coro::State	1160	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
947	_newprocess(args)	1161	}
948	SV * args	1162
949	PROTOTYPE: $	1163	SV *
		1164	new (char *klass, ...)
950	CODE:	1165	CODE:
951	Coro__State coro;	1166	{
		1167	struct coro *coro;
		1168	HV *hv;
		1169	int i;
952		1170
953	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
954	croak ("Coro::State::_newprocess expects an arrayref");
955
956	Newz (0, coro, 1, struct coro);	1171	Newz (0, coro, 1, struct coro);
		1172	coro->args = newAV ();
		1173	coro->save = CORO_SAVE_ALL;
		1174	coro->flags = CF_NEW;
957		1175
958	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1176	hv = newHV ();
959	/coro->mainstack = 0; //actual work is done inside transfer /	1177	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
960	/coro->stack = 0;/	1178	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
961		1179
962	RETVAL = coro;	1180	for (i = 1; i < items; i++)
		1181	av_push (coro->args, newSVsv (ST (i)));
		1182	}
963	OUTPUT:	1183	OUTPUT:
964	RETVAL	1184	RETVAL
965		1185
		1186	int
		1187	save (SV *coro, int new_save = -1)
		1188	CODE:
		1189	RETVAL = api_save (coro, new_save);
		1190	OUTPUT:
		1191	RETVAL
		1192
966	void	1193	void
967	transfer(prev, next, flags)	1194	_set_stacklevel (...)
968	SV *prev	1195	ALIAS:
969	SV *next	1196	Coro::State::transfer = 1
970	int flags	1197	Coro::schedule = 2
971	PROTOTYPE: @	1198	Coro::cede = 3
		1199	Coro::cede_notself = 4
972	CODE:	1200	CODE:
973	PUTBACK;	1201	{
974	SV_CORO (next, "Coro::transfer");	1202	struct transfer_args ta;
975	SV_CORO (prev, "Coro::transfer");	1203
976	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1204	switch (ix)
977	SPAGAIN;	1205	{
		1206	case 0:
		1207	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1208	ta.next = 0;
		1209	break;
		1210
		1211	case 1:
		1212	if (items != 2)
		1213	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1214
		1215	prepare_transfer (&ta, ST (0), ST (1));
		1216	break;
		1217
		1218	case 2:
		1219	prepare_schedule (&ta);
		1220	break;
		1221
		1222	case 3:
		1223	prepare_cede (&ta);
		1224	break;
		1225
		1226	case 4:
		1227	if (!prepare_cede_notself (&ta))
		1228	XSRETURN_EMPTY;
		1229
		1230	break;
		1231	}
		1232
		1233	BARRIER;
		1234	TRANSFER (ta);
		1235
		1236	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1237	XSRETURN_YES;
		1238	}
		1239
		1240	bool
		1241	_destroy (SV *coro_sv)
		1242	CODE:
		1243	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
		1244	OUTPUT:
		1245	RETVAL
978		1246
979	void	1247	void
980	DESTROY(coro)
981	Coro::State coro
982	CODE:
983
984	if (coro->mainstack && coro->mainstack != main_mainstack)
985	{
986	struct coro temp;
987
988	PUTBACK;
989	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
990	LOAD (aTHX_ coro);
991	SPAGAIN;
992
993	destroy_stacks (aTHX);
994
995	LOAD ((&temp)); /* this will get rid of defsv etc.. */
996	SPAGAIN;
997
998	coro->mainstack = 0;
999	}
1000
1001	deallocate_stack (coro);
1002	SvREFCNT_dec (coro->args);
1003	Safefree (coro);
1004
1005	void
1006	_exit(code)	1248	_exit (code)
1007	int code	1249	int code
1008	PROTOTYPE: $	1250	PROTOTYPE: $
1009	CODE:	1251	CODE:
1010	_exit (code);	1252	_exit (code);
1011		1253
1012	MODULE = Coro::State PACKAGE = Coro::Cont	1254	int
		1255	cctx_count ()
		1256	CODE:
		1257	RETVAL = cctx_count;
		1258	OUTPUT:
		1259	RETVAL
1013		1260
1014	void	1261	int
1015	yield(...)	1262	cctx_idle ()
1016	PROTOTYPE: @	1263	CODE:
1017	CODE:	1264	RETVAL = cctx_idle;
1018	SV *yieldstack;	1265	OUTPUT:
1019	SV *sv;	1266	RETVAL
1020	AV *defav = GvAV (PL_defgv);
1021	struct coro prev, next;
1022
1023	yieldstack = *hv_fetch (
1024	(HV *)SvRV (GvSV (coro_current)),
1025	"yieldstack", sizeof ("yieldstack") - 1,
1026	0
1027	);
1028
1029	/* set up @_ -- ugly */
1030	av_clear (defav);
1031	av_fill (defav, items - 1);
1032	while (items--)
1033	av_store (defav, items, SvREFCNT_inc (ST(items)));
1034
1035	sv = av_pop ((AV *)SvRV (yieldstack));
1036	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));
1037	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));
1038	SvREFCNT_dec (sv);
1039
1040	coro_state_transfer (aTHX_ prev, next, 0);
1041		1267
1042	MODULE = Coro::State PACKAGE = Coro	1268	MODULE = Coro::State PACKAGE = Coro
1043		1269
1044	BOOT:	1270	BOOT:
1045	{	1271	{
1046	int i;	1272	int i;
		1273
1047	HV *stash = gv_stashpv ("Coro", TRUE);	1274	coro_stash = gv_stashpv ("Coro", TRUE);
1048		1275
1049	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1276	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1050	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1277	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1051	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1278	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1052	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1279	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1053	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1280	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1054	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1281	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1055		1282
1056	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1283	coro_current = get_sv ("Coro::current", FALSE);
1057	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1284	SvREADONLY_on (coro_current);
1058		1285
1059	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1286	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1060	coro_ready[i] = newAV ();	1287	coro_ready[i] = newAV ();
1061		1288
1062	{	1289	{
1063	SV *sv = perl_get_sv("Coro::API", 1);	1290	SV *sv = perl_get_sv("Coro::API", 1);
1064		1291
1065	coroapi.schedule = api_schedule;	1292	coroapi.schedule = api_schedule;
		1293	coroapi.save = api_save;
1066	coroapi.cede = api_cede;	1294	coroapi.cede = api_cede;
		1295	coroapi.cede_notself = api_cede_notself;
1067	coroapi.ready = api_ready;	1296	coroapi.ready = api_ready;
		1297	coroapi.is_ready = api_is_ready;
1068	coroapi.nready = &coro_nready;	1298	coroapi.nready = &coro_nready;
1069	coroapi.current = coro_current;	1299	coroapi.current = coro_current;
1070		1300
1071	GCoroAPI = &coroapi;	1301	GCoroAPI = &coroapi;
1072	sv_setiv (sv, (IV)&coroapi);	1302	sv_setiv (sv, (IV)&coroapi);
1073	SvREADONLY_on (sv);	1303	SvREADONLY_on (sv);
1074	}	1304	}
1075	}	1305	}
1076		1306
1077	#if !PERL_MICRO
1078
1079	void	1307	void
1080	ready(self)	1308	_set_current (SV *current)
1081	SV * self
1082	PROTOTYPE: $	1309	PROTOTYPE: $
1083	CODE:	1310	CODE:
1084	api_ready (self);	1311	SvREFCNT_dec (SvRV (coro_current));
1085		1312	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1086	#endif
1087		1313
1088	int	1314	int
		1315	prio (Coro::State coro, int newprio = 0)
		1316	ALIAS:
		1317	nice = 1
		1318	CODE:
		1319	{
		1320	RETVAL = coro->prio;
		1321
		1322	if (items > 1)
		1323	{
		1324	if (ix)
		1325	newprio = coro->prio - newprio;
		1326
		1327	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1328	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1329
		1330	coro->prio = newprio;
		1331	}
		1332	}
		1333	OUTPUT:
		1334	RETVAL
		1335
		1336	SV *
		1337	ready (SV *self)
		1338	PROTOTYPE: $
		1339	CODE:
		1340	RETVAL = boolSV (api_ready (self));
		1341	OUTPUT:
		1342	RETVAL
		1343
		1344	SV *
		1345	is_ready (SV *self)
		1346	PROTOTYPE: $
		1347	CODE:
		1348	RETVAL = boolSV (api_is_ready (self));
		1349	OUTPUT:
		1350	RETVAL
		1351
		1352	int
1089	nready(...)	1353	nready (...)
1090	PROTOTYPE:	1354	PROTOTYPE:
1091	CODE:	1355	CODE:
1092	RETVAL = coro_nready;	1356	RETVAL = coro_nready;
1093	OUTPUT:	1357	OUTPUT:
1094	RETVAL	1358	RETVAL
1095		1359
1096	void	1360	MODULE = Coro::State PACKAGE = Coro::AIO
1097	schedule(...)	1361
1098	PROTOTYPE:	1362	SV *
		1363	_get_state ()
1099	CODE:	1364	CODE:
1100	api_schedule ();
1101
1102	void
1103	cede(...)
1104	PROTOTYPE:
1105	CODE:
1106	api_cede ();
1107
1108	# and these are hacks
1109	SV *
1110	_aio_get_state ()
1111	CODE:
1112	{	1365	{
1113	struct {	1366	struct io_state *data;
1114	int errorno;
1115	int laststype;
1116	int laststatval;
1117	Stat_t statcache;
1118	} data;
1119		1367
		1368	RETVAL = newSV (sizeof (struct io_state));
		1369	data = (struct io_state *)SvPVX (RETVAL);
		1370	SvCUR_set (RETVAL, sizeof (struct io_state));
		1371	SvPOK_only (RETVAL);
		1372
1120	data.errorno = errno;	1373	data->errorno = errno;
1121	data.laststype = PL_laststype;	1374	data->laststype = PL_laststype;
1122	data.laststatval = PL_laststatval;	1375	data->laststatval = PL_laststatval;
1123	data.statcache = PL_statcache;	1376	data->statcache = PL_statcache;
1124
1125	RETVAL = newSVpvn ((char *)&data, sizeof data);
1126	}	1377	}
1127	OUTPUT:	1378	OUTPUT:
1128	RETVAL	1379	RETVAL
1129		1380
1130	void	1381	void
1131	_aio_set_state (char *data_)	1382	_set_state (char *data_)
1132	PROTOTYPE: $	1383	PROTOTYPE: $
1133	CODE:	1384	CODE:
1134	{	1385	{
1135	struct {	1386	struct io_state data = (void )data_;
1136	int errorno;
1137	int laststype;
1138	int laststatval;
1139	Stat_t statcache;
1140	} data = (void )data_;
1141		1387
1142	errno = data->errorno;	1388	errno = data->errorno;
1143	PL_laststype = data->laststype;	1389	PL_laststype = data->laststype;
1144	PL_laststatval = data->laststatval;	1390	PL_laststatval = data->laststatval;
1145	PL_statcache = data->statcache;	1391	PL_statcache = data->statcache;
1146	}	1392	}
		1393

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Comparing Coro/Coro/State.xs (file contents): Revision 1.85 by root, Fri Nov 24 00:32:04 2006 UTC vs. Revision 1.140 by root, Sat Jan 20 19:52:15 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.85 by root, Fri Nov 24 00:32:04 2006 UTC vs.
Revision 1.140 by root, Sat Jan 20 19:52:15 2007 UTC