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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.82 by root, Mon Nov 20 22:26:16 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC

…		…
		1	#include "libcoro/coro.c"
		2
1	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "patchlevel.h"	9	#include "patchlevel.h"
10		10
11	#if PERL_VERSION < 6	11	#include <stdio.h>
		12	#include <errno.h>
		13	#include <assert.h>
		14
		15	#ifdef HAVE_MMAP
		16	# include <unistd.h>
		17	# include <sys/mman.h>
		18	# ifndef MAP_ANONYMOUS
		19	# ifdef MAP_ANON
		20	# define MAP_ANONYMOUS MAP_ANON
		21	# else
		22	# undef HAVE_MMAP
		23	# endif
		24	# endif
		25	# include <limits.h>
		26	# ifndef PAGESIZE
		27	# define PAGESIZE pagesize
		28	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		29	static long pagesize;
		30	# else
		31	# define BOOT_PAGESIZE (void)0
		32	# endif
		33	#else
		34	# define PAGESIZE 0
		35	# define BOOT_PAGESIZE (void)0
		36	#endif
		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	55	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	56	# define PL_ppaddr ppaddr
14	# endif	57	# endif
15	# ifndef call_sv	58	# ifndef call_sv
16	# define call_sv perl_call_sv	59	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
29	# endif	72	# endif
30	#endif	73	#endif
31		74
32	#include <errno.h>	75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
33		79
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	81	# undef CORO_STACKGUARD
36	#endif
37
38	#ifndef STACKGUARD
39	# define STACKGUARD 0
40	#endif
41
42	#ifdef HAVE_MMAP
43	# include <unistd.h>
44	# include <sys/mman.h>
45	# ifndef MAP_ANONYMOUS
46	# ifdef MAP_ANON
47	# define MAP_ANONYMOUS MAP_ANON
48	# else
49	# undef HAVE_MMAP
50	# endif
51	# endif	82	#endif
52	# include <limits.h>	83
53	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
54	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;
57	# else
58	# define BOOT_PAGESIZE
59	# endif	86	#endif
60	#endif
61		87
62	#define SUB_INIT "Coro::State::initialize"	88	/* prefer perl internal functions over our own? */
63	#define UCORO_STATE "_coro_state"	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
64		92
65	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* 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	94	* to the current C stack pointer. Its property is that it changes with each call
67	* and should be unique. */	95	* and should be unique. */
		96	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	97	#define STACKLEVEL ((void *)&stacklevel)
69		98
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		100
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	101	#if __GNUC__ >= 3
		102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		104	#else
		105	# define attribute(x)
		106	# define BARRIER
		107	#endif
		108
		109	#define NOINLINE attribute ((noinline))
73		110
74	#include "CoroAPI.h"	111	#include "CoroAPI.h"
75		112
76	#ifdef USE_ITHREADS	113	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	114	static perl_mutex coro_mutex;
…		…
80	#else	117	#else
81	# define LOCK (void)0	118	# define LOCK (void)0
82	# define UNLOCK (void)0	119	# define UNLOCK (void)0
83	#endif	120	#endif
84		121
		122	/* helper storage struct for Coro::AIO */
		123	struct io_state
		124	{
		125	int errorno;
		126	I32 laststype;
		127	int laststatval;
		128	Stat_t statcache;
		129	};
		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
85	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	134	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 */	135	static SV coro_mortal; / will be freed after next transfer */
91		136
92	/* this is actually not only the c stack but also c registers etc... */	137	static struct coro_cctx *cctx_first;
		138	static int cctx_count, cctx_idle;
		139
		140	/* this is a structure representing a c-level coroutine */
93	typedef struct {	141	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	142	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		143
		144	/* the stack */
		145	void *sptr;
		146	size_t ssize;
		147
		148	/* cpu state */
		149	void idle_sp; / sp of top-level transfer/schedule/cede call */
		150	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		151	JMPENV *top_env;
98	coro_context cctx;	152	coro_context cctx;
99		153
100	void *sptr;	154	#if CORO_USE_VALGRIND
101	long ssize; /* positive == mmap, otherwise malloc */	155	int valgrind_id;
102	} coro_stack;	156	#endif
		157	char inuse, mapped;
		158	} coro_cctx;
103		159
		160	enum {
		161	CF_RUNNING = 0x0001, /* coroutine is running */
		162	CF_READY = 0x0002, /* coroutine is ready */
		163	CF_NEW = 0x0004, /* has never been switched to */
		164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		165	};
		166
		167	/* this is a structure representing a perl-level coroutine */
104	struct coro {	168	struct coro {
105	/* the optional C context */	169	/* the c coroutine allocated to this perl coroutine, if any */
106	coro_stack *stack;	170	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		171
150	/* data associated with this coroutine (initial args) */	172	/* data associated with this coroutine (initial args) */
151	AV *args;	173	AV *args;
		174	int refcnt;
		175	int save; /* CORO_SAVE flags */
		176	int flags; /* CF_ flags */
		177
		178	/* optionally saved, might be zero */
		179	AV defav; / @_ */
		180	SV defsv; / $_ */
		181	SV errsv; / $@ */
		182	GV deffh; / default filehandle */
		183	SV irssv; / $/ */
		184	SV irssv_sv; / real $/ cache */
		185
		186	#define VAR(name,type) type name;
		187	# include "state.h"
		188	#undef VAR
		189
		190	/* coro process data */
		191	int prio;
152	};	192	};
153		193
154	typedef struct coro *Coro__State;	194	typedef struct coro *Coro__State;
155	typedef struct coro *Coro__State_or_hashref;	195	typedef struct coro *Coro__State_or_hashref;
156		196
		197	/ Coro ******************************************************************/
		198
		199	#define PRIO_MAX 3
		200	#define PRIO_HIGH 1
		201	#define PRIO_NORMAL 0
		202	#define PRIO_LOW -1
		203	#define PRIO_IDLE -3
		204	#define PRIO_MIN -4
		205
		206	/* for Coro.pm */
		207	static SV *coro_current;
		208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		209	static int coro_nready;
		210
		211	/ lowlevel stuff ********************************************************/
		212
157	static AV *	213	static AV *
158	coro_clone_padlist (pTHX_ CV *cv)	214	coro_clone_padlist (pTHX_ CV *cv)
159	{	215	{
160	AV *padlist = CvPADLIST (cv);	216	AV *padlist = CvPADLIST (cv);
161	AV newpadlist, newpad;	217	AV newpadlist, newpad;
162		218
163	newpadlist = newAV ();	219	newpadlist = newAV ();
164	AvREAL_off (newpadlist);	220	AvREAL_off (newpadlist);
165	#if PERL_VERSION < 9	221	#if PERL_VERSION_ATLEAST (5,9,0)
		222	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		223	#else
166	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	224	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
167	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
169	#endif	225	#endif
170	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	226	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
171	--AvFILLp (padlist);	227	--AvFILLp (padlist);
172		228
173	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	229	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
217		273
218	#define PERL_MAGIC_coro PERL_MAGIC_ext	274	#define PERL_MAGIC_coro PERL_MAGIC_ext
219		275
220	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	276	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
221		277
		278	#define CORO_MAGIC(cv) \
		279	SvMAGIC (cv) \
		280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		281	? SvMAGIC (cv) \
		282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		283	: 0
		284
222	/* the next two functions merely cache the padlists */	285	/* the next two functions merely cache the padlists */
223	static void	286	static void
224	get_padlist (pTHX_ CV *cv)	287	get_padlist (pTHX_ CV *cv)
225	{	288	{
226	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	289	MAGIC *mg = CORO_MAGIC (cv);
		290	AV *av;
227		291
228	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
229	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
230	else	294	else
231	{	295	{
232	#if 0	296	#if CORO_PREFER_PERL_FUNCTIONS
233	/* this should work - but it doesn't :( */	297	/* this is probably cleaner, but also slower? */
234	CV *cp = Perl_cv_clone (aTHX_ cv);	298	CV *cp = Perl_cv_clone (cv);
235	CvPADLIST (cv) = CvPADLIST (cp);	299	CvPADLIST (cv) = CvPADLIST (cp);
236	CvPADLIST (cp) = 0;	300	CvPADLIST (cp) = 0;
237	SvREFCNT_dec (cp);	301	SvREFCNT_dec (cp);
238	#else	302	#else
239	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	303	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
242	}	306	}
243		307
244	static void	308	static void
245	put_padlist (pTHX_ CV *cv)	309	put_padlist (pTHX_ CV *cv)
246	{	310	{
247	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	311	MAGIC *mg = CORO_MAGIC (cv);
		312	AV *av;
248		313
249	if (!mg)	314	if (!mg)
250	{	315	{
251	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
252	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
253	mg->mg_virtual = &vtbl_coro;	318	mg->mg_virtual = &vtbl_coro;
254	mg->mg_obj = (SV *)newAV ();	319	mg->mg_obj = (SV *)newAV ();
255	}	320	}
256		321
257	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	322	av = (AV *)mg->mg_obj;
		323
		324	if (AvFILLp (av) >= AvMAX (av))
		325	av_extend (av, AvMAX (av) + 1);
		326
		327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
258	}	328	}
		329
		330	/ load & save, init *****************************************************/
259		331
260	#define SB do {	332	#define SB do {
261	#define SE } while (0)	333	#define SE } while (0)
262		334
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	335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
267		336
268	static void	337	static void
269	load_state(pTHX_ Coro__State c)	338	load_perl (pTHX_ Coro__State c)
270	{	339	{
271	PL_dowarn = c->dowarn;	340	#define VAR(name,type) PL_ ## name = c->name;
272	PL_in_eval = c->in_eval;	341	# include "state.h"
273		342	#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		343
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		348
		349	if (c->irssv)
		350	{
		351	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		352	{
		353	SvREFCNT_dec (c->irssv);
		354	c->irssv = 0;
		355	}
		356	else
		357	{
		358	REPLACE_SV (PL_rs, c->irssv);
		359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		360	sv_setsv (c->irssv_sv, PL_rs);
		361	}
		362	}
309		363
310	{	364	{
311	dSP;	365	dSP;
312	CV *cv;	366	CV *cv;
313		367
314	/* now do the ugly restore mess */	368	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	369	while ((cv = (CV *)POPs))
316	{	370	{
317	AV padlist = (AV )POPs;
318
319	if (padlist)
320	{
321	put_padlist (aTHX_ cv); /* mark this padlist as available */	371	put_padlist (aTHX_ cv); /* mark this padlist as available */
322	CvPADLIST(cv) = padlist;	372	CvDEPTH (cv) = PTR2IV (POPs);
323	}	373	CvPADLIST (cv) = (AV *)POPs;
324
325	++CvDEPTH(cv);
326	}	374	}
327		375
328	PUTBACK;	376	PUTBACK;
329	}	377	}
		378	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
330	}	379	}
331		380
332	static void	381	static void
333	save_state(pTHX_ Coro__State c, int flags)	382	save_perl (pTHX_ Coro__State c)
334	{	383	{
		384	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
335	{	385	{
336	dSP;	386	dSP;
337	I32 cxix = cxstack_ix;	387	I32 cxix = cxstack_ix;
338	PERL_CONTEXT *ccstk = cxstack;	388	PERL_CONTEXT *ccstk = cxstack;
339	PERL_SI *top_si = PL_curstackinfo;	389	PERL_SI *top_si = PL_curstackinfo;
…		…
341	/*	391	/*
342	* the worst thing you can imagine happens first - we have to save	392	* the worst thing you can imagine happens first - we have to save
343	* (and reinitialize) all cv's in the whole callchain :(	393	* (and reinitialize) all cv's in the whole callchain :(
344	*/	394	*/
345		395
		396	EXTEND (SP, 3 + 1);
346	PUSHs (Nullsv);	397	PUSHs (Nullsv);
347	/* this loop was inspired by pp_caller */	398	/* this loop was inspired by pp_caller */
348	for (;;)	399	for (;;)
349	{	400	{
350	while (cxix >= 0)	401	while (cxix >= 0)
351	{	402	{
352	PERL_CONTEXT *cx = &ccstk[cxix--];	403	PERL_CONTEXT *cx = &ccstk[cxix--];
353		404
354	if (CxTYPE(cx) == CXt_SUB)	405	if (CxTYPE (cx) == CXt_SUB)
355	{	406	{
356	CV *cv = cx->blk_sub.cv;	407	CV *cv = cx->blk_sub.cv;
		408
357	if (CvDEPTH(cv))	409	if (CvDEPTH (cv))
358	{	410	{
359	EXTEND (SP, CvDEPTH(cv)*2);	411	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));	412	PUSHs ((SV *)CvPADLIST (cv));
		413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
369	PUSHs ((SV *)cv);	414	PUSHs ((SV *)cv);
370		415
		416	CvDEPTH (cv) = 0;
371	get_padlist (aTHX_ cv);	417	get_padlist (aTHX_ cv);
372	}	418	}
373	}	419	}
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	}	420	}
383		421
384	if (top_si->si_type == PERLSI_MAIN)	422	if (top_si->si_type == PERLSI_MAIN)
385	break;	423	break;
386		424
…		…
390	}	428	}
391		429
392	PUTBACK;	430	PUTBACK;
393	}	431	}
394		432
395	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	433	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;	434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		437	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
398		438
399	c->dowarn = PL_dowarn;	439	#define VAR(name,type)c->name = PL_ ## name;
400	c->in_eval = PL_in_eval;	440	# include "state.h"
401		441	#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	}	442	}
434		443
435	/*	444	/*
436	* allocate various perl stacks. This is an exact copy	445	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	446	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	447	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	448	* not usually need a lot of stackspace.
440	*/	449	*/
		450	#if CORO_PREFER_PERL_FUNCTIONS
		451	# define coro_init_stacks init_stacks
		452	#else
441	static void	453	static void
442	coro_init_stacks (pTHX)	454	coro_init_stacks (pTHX)
443	{	455	{
444	LOCK;
445
446	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
447	PL_curstackinfo->si_type = PERLSI_MAIN;	457	PL_curstackinfo->si_type = PERLSI_MAIN;
448	PL_curstack = PL_curstackinfo->si_stack;	458	PL_curstack = PL_curstackinfo->si_stack;
449	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
450		460
451	PL_stack_base = AvARRAY(PL_curstack);	461	PL_stack_base = AvARRAY(PL_curstack);
452	PL_stack_sp = PL_stack_base;	462	PL_stack_sp = PL_stack_base;
453	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
454		464
455	New(50,PL_tmps_stack,96,SV*);	465	New(50,PL_tmps_stack,128,SV*);
456	PL_tmps_floor = -1;	466	PL_tmps_floor = -1;
457	PL_tmps_ix = -1;	467	PL_tmps_ix = -1;
458	PL_tmps_max = 96;	468	PL_tmps_max = 128;
459		469
460	New(54,PL_markstack,16,I32);	470	New(54,PL_markstack,32,I32);
461	PL_markstack_ptr = PL_markstack;	471	PL_markstack_ptr = PL_markstack;
462	PL_markstack_max = PL_markstack + 16;	472	PL_markstack_max = PL_markstack + 32;
463		473
464	#ifdef SET_MARK_OFFSET	474	#ifdef SET_MARK_OFFSET
465	SET_MARK_OFFSET;	475	SET_MARK_OFFSET;
466	#endif	476	#endif
467		477
468	New(54,PL_scopestack,16,I32);	478	New(54,PL_scopestack,32,I32);
469	PL_scopestack_ix = 0;	479	PL_scopestack_ix = 0;
470	PL_scopestack_max = 16;	480	PL_scopestack_max = 32;
471		481
472	New(54,PL_savestack,96,ANY);	482	New(54,PL_savestack,64,ANY);
473	PL_savestack_ix = 0;	483	PL_savestack_ix = 0;
474	PL_savestack_max = 96;	484	PL_savestack_max = 64;
475		485
476	#if PERL_VERSION < 9	486	#if !PERL_VERSION_ATLEAST (5,9,0)
477	New(54,PL_retstack,8,OP*);	487	New(54,PL_retstack,16,OP*);
478	PL_retstack_ix = 0;	488	PL_retstack_ix = 0;
479	PL_retstack_max = 8;	489	PL_retstack_max = 16;
480	#endif	490	#endif
481
482	UNLOCK;
483	}	491	}
		492	#endif
484		493
485	/*	494	/*
486	* destroy the stacks, the callchain etc...	495	* destroy the stacks, the callchain etc...
487	*/	496	*/
488	static void	497	static void
489	destroy_stacks(pTHX)	498	coro_destroy_stacks (pTHX)
490	{	499	{
491	if (!IN_DESTRUCT)	500	if (!IN_DESTRUCT)
492	{	501	{
493	/* is this ugly, I ask? */	502	/* restore all saved variables and stuff */
494	LEAVE_SCOPE (0);	503	LEAVE_SCOPE (0);
		504	assert (PL_tmps_floor == -1);
495		505
496	/* sure it is, but more important: is it correct?? :/ */	506	/* free all temporaries */
497	FREETMPS;	507	FREETMPS;
		508	assert (PL_tmps_ix == -1);
498		509
		510	/* unwind all extra stacks */
499	/POPSTACK_TO (PL_mainstack);//D//use/	511	POPSTACK_TO (PL_mainstack);
		512
		513	/* unwind main stack */
		514	dounwind (-1);
500	}	515	}
501		516
502	while (PL_curstackinfo->si_next)	517	while (PL_curstackinfo->si_next)
503	PL_curstackinfo = PL_curstackinfo->si_next;	518	PL_curstackinfo = PL_curstackinfo->si_next;
504		519
505	while (PL_curstackinfo)	520	while (PL_curstackinfo)
506	{	521	{
507	PERL_SI *p = PL_curstackinfo->si_prev;	522	PERL_SI *p = PL_curstackinfo->si_prev;
508		523
509	{ /D//remove/
510	dSP;
511	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
512	PUTBACK; /* possibly superfluous */
513	}
514
515	if (!IN_DESTRUCT)	524	if (!IN_DESTRUCT)
516	{
517	dounwind (-1);/D//remove/
518	SvREFCNT_dec (PL_curstackinfo->si_stack);	525	SvREFCNT_dec (PL_curstackinfo->si_stack);
519	}
520		526
521	Safefree (PL_curstackinfo->si_cxstack);	527	Safefree (PL_curstackinfo->si_cxstack);
522	Safefree (PL_curstackinfo);	528	Safefree (PL_curstackinfo);
523	PL_curstackinfo = p;	529	PL_curstackinfo = p;
524	}	530	}
525		531
526	Safefree (PL_tmps_stack);	532	Safefree (PL_tmps_stack);
527	Safefree (PL_markstack);	533	Safefree (PL_markstack);
528	Safefree (PL_scopestack);	534	Safefree (PL_scopestack);
529	Safefree (PL_savestack);	535	Safefree (PL_savestack);
530	#if PERL_VERSION < 9	536	#if !PERL_VERSION_ATLEAST (5,9,0)
531	Safefree (PL_retstack);	537	Safefree (PL_retstack);
532	#endif	538	#endif
533	}	539	}
534		540
535	static void	541	/ coroutine stack handling **********************************************/
536	allocate_stack (Coro__State ctx, int alloc)
537	{
538	coro_stack *stack;
539		542
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	543	static void
571	deallocate_stack (Coro__State ctx)	544	setup_coro (pTHX_ 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	{	545	{
598	/*	546	/*
599	* emulate part of the perl startup here.	547	* emulate part of the perl startup here.
600	*/	548	*/
		549	coro_init_stacks (aTHX);
		550
		551	PL_curcop = &PL_compiling;
		552	PL_in_eval = EVAL_NULL;
		553	PL_comppad = 0;
		554	PL_curpm = 0;
		555	PL_localizing = 0;
		556	PL_dirty = 0;
		557	PL_restartop = 0;
		558
		559	{
		560	dSP;
		561	LOGOP myop;
		562
		563	SvREFCNT_dec (GvAV (PL_defgv));
		564	GvAV (PL_defgv) = coro->args; coro->args = 0;
		565
		566	Zero (&myop, 1, LOGOP);
		567	myop.op_next = Nullop;
		568	myop.op_flags = OPf_WANT_VOID;
		569
		570	PUSHMARK (SP);
		571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		572	PUTBACK;
		573	PL_op = (OP *)&myop;
		574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		575	SPAGAIN;
		576	}
		577
		578	ENTER; /* necessary e.g. for dounwind */
		579	}
		580
		581	static void
		582	free_coro_mortal (pTHX)
		583	{
		584	if (coro_mortal)
		585	{
		586	SvREFCNT_dec (coro_mortal);
		587	coro_mortal = 0;
		588	}
		589	}
		590
		591	/* inject a fake call to Coro::State::_cctx_init into the execution */
		592	static void NOINLINE
		593	prepare_cctx (pTHX_ coro_cctx *cctx)
		594	{
		595	dSP;
		596	LOGOP myop;
		597
		598	Zero (&myop, 1, LOGOP);
		599	myop.op_next = PL_op;
		600	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
		601
		602	PUSHMARK (SP);
		603	EXTEND (SP, 2);
		604	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		605	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		606	PUTBACK;
		607	PL_op = (OP *)&myop;
		608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		609	SPAGAIN;
		610	}
		611
		612	static void
		613	coro_run (void *arg)
		614	{
601	dTHX;	615	dTHX;
602	dSP;
603	Coro__State ctx = (Coro__State)arg;
604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
605		616
606	coro_init_stacks (aTHX);	617	/* coro_run is the alternative tail of transfer(), so unlock here. */
607	/PL_curcop = 0;/	618	UNLOCK;
608	/PL_in_eval = PL_in_eval;/ /* inherit */
609	SvREFCNT_dec (GvAV (PL_defgv));
610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
611		619
612	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	}
653
654	static void
655	continue_coro (void *arg)
656	{
657	/*	620	/*
658	* this is a _very_ stripped down perl interpreter ;)	621	* this is a _very_ stripped down perl interpreter ;)
659	*/	622	*/
660	dTHX;
661	Coro__State ctx = (Coro__State)arg;
662
663	PL_top_env = &PL_start_env;	623	PL_top_env = &PL_start_env;
664		624
665	ctx->cursp = 0;	625	/* inject call to cctx_init */
		626	prepare_cctx (aTHX_ (coro_cctx *)arg);
		627
		628	/* somebody will hit me for both perl_run and PL_restartop */
		629	PL_restartop = PL_op;
		630	perl_run (PL_curinterp);
		631
		632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
		633	abort ();
		634	}
		635
		636	static coro_cctx *
		637	cctx_new ()
		638	{
		639	coro_cctx *cctx;
		640	void *stack_start;
		641	size_t stack_size;
		642
		643	++cctx_count;
		644
		645	Newz (0, cctx, 1, coro_cctx);
		646
		647	#if HAVE_MMAP
		648
		649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		650	/* mmap supposedly does allocate-on-write for us */
		651	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		652
		653	if (cctx->sptr != (void *)-1)
		654	{
		655	# if CORO_STACKGUARD
		656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		657	# endif
		658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		660	cctx->mapped = 1;
		661	}
		662	else
		663	#endif
		664	{
		665	cctx->ssize = coro_stacksize * (long)sizeof (long);
		666	New (0, cctx->sptr, coro_stacksize, long);
		667
		668	if (!cctx->sptr)
		669	{
		670	perror ("FATAL: unable to allocate stack for coroutine");
		671	_exit (EXIT_FAILURE);
		672	}
		673
		674	stack_start = cctx->sptr;
		675	stack_size = cctx->ssize;
		676	}
		677
		678	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
		679	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
		680
		681	return cctx;
		682	}
		683
		684	static void
		685	cctx_destroy (coro_cctx *cctx)
		686	{
		687	if (!cctx)
		688	return;
		689
		690	--cctx_count;
		691
		692	#if CORO_USE_VALGRIND
		693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		694	#endif
		695
		696	#if HAVE_MMAP
		697	if (cctx->mapped)
		698	munmap (cctx->sptr, cctx->ssize);
		699	else
		700	#endif
		701	Safefree (cctx->sptr);
		702
		703	Safefree (cctx);
		704	}
		705
		706	static coro_cctx *
		707	cctx_get (pTHX)
		708	{
		709	while (cctx_first)
		710	{
		711	coro_cctx *cctx = cctx_first;
		712	cctx_first = cctx->next;
		713	--cctx_idle;
		714
		715	if (cctx->ssize >= coro_stacksize)
		716	return cctx;
		717
		718	cctx_destroy (cctx);
		719	}
		720
666	PL_op = PL_op->op_next;	721	PL_op = PL_op->op_next;
667	CALLRUNOPS(aTHX);	722	return cctx_new ();
668
669	abort ();
670	}	723	}
671		724
672	static void	725	static void
		726	cctx_put (coro_cctx *cctx)
		727	{
		728	/* free another cctx if overlimit */
		729	if (cctx_idle >= MAX_IDLE_CCTX)
		730	{
		731	coro_cctx *first = cctx_first;
		732	cctx_first = first->next;
		733	--cctx_idle;
		734
		735	assert (!first->inuse);
		736	cctx_destroy (first);
		737	}
		738
		739	++cctx_idle;
		740	cctx->next = cctx_first;
		741	cctx_first = cctx;
		742	}
		743
		744	/ coroutine switching ***************************************************/
		745
		746	/* never call directly, always through the coro_state_transfer global variable */
		747	static void NOINLINE
673	transfer (pTHX_ struct coro prev, struct coro next, int flags)	748	transfer (pTHX_ struct coro prev, struct coro next)
674	{	749	{
675	dSTACKLEVEL;	750	dSTACKLEVEL;
676		751
		752	/* sometimes transfer is only called to set idle_sp */
		753	if (!next)
		754	{
		755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		756	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		757	}
677	if (prev != next)	758	else if (prev != next)
678	{	759	{
679	/* has this coro been created yet? */	760	coro_cctx *prev__cctx;
680	if (next->mainstack)	761
		762	if (prev->flags & CF_NEW)
681	{	763	{
682	LOCK;	764	/* create a new empty context */
683	SAVE (prev, flags);	765	Newz (0, prev->cctx, 1, coro_cctx);
684	LOAD (next);	766	prev->cctx->inuse = 1;
685	UNLOCK;	767	prev->flags &= ~CF_NEW;
686		768	prev->flags \|= CF_RUNNING;
687	/* mark this state as in-use */
688	next->mainstack = 0;
689	next->tmps_ix = -2;
690
691	/* stacklevel changed? if yes, grab the stack for us! */
692	if (flags & TRANSFER_SAVE_CCTXT)
693	{
694	if (!prev->stack)
695	allocate_stack (prev, 0);
696	else if (prev->cursp != stacklevel
697	&& prev->stack->usecnt > 1)
698	{
699	prev->gencnt = ++prev->stack->gencnt;
700	prev->stack->usecnt = 1;
701	}
702
703	/* has our stack been invalidated? */
704	if (next->stack && next->stack->gencnt != next->gencnt)
705	{
706	deallocate_stack (next);
707	allocate_stack (next, 1);
708	coro_create (&(next->stack->cctx),
709	continue_coro, (void *)next,
710	next->stack->sptr, labs (next->stack->ssize));
711	}
712
713	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
714	prev->cursp = stacklevel;
715	/* don't add any code here */
716	}
717	else
718	next->cursp = stacklevel;
719	}	769	}
720	else if (next->tmps_ix == -2)	770
721	croak ("tried to transfer to running coroutine");	771	/TODO: must not croak here /
		772	if (!prev->flags & CF_RUNNING)
		773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		774
		775	if (next->flags & CF_RUNNING)
		776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		777
		778	if (next->flags & CF_DESTROYED)
		779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		780
		781	prev->flags &= ~CF_RUNNING;
		782	next->flags \|= CF_RUNNING;
		783
		784	LOCK;
		785
		786	if (next->flags & CF_NEW)
		787	{
		788	/* need to start coroutine */
		789	next->flags &= ~CF_NEW;
		790	/* first get rid of the old state */
		791	save_perl (aTHX_ prev);
		792	/* setup coroutine call */
		793	setup_coro (aTHX_ next);
		794	/* need a new stack */
		795	assert (!next->cctx);
		796	}
722	else	797	else
723	{	798	{
724	LOCK;	799	/* coroutine already started */
725	SAVE (prev, -1); /* first get rid of the old state */	800	save_perl (aTHX_ prev);
726	UNLOCK;	801	load_perl (aTHX_ next);
727
728	/* create the coroutine for the first time */
729	if (flags & TRANSFER_SAVE_CCTXT)
730	{
731	if (!prev->stack)
732	allocate_stack (prev, 0);
733
734	/* the new coroutine starts with start_env again */
735	PL_top_env = &PL_start_env;
736
737	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
738	{
739	setup_coro (next);
740	next->cursp = stacklevel;
741
742	prev->stack->refcnt++;
743	prev->stack->usecnt++;
744	next->stack = prev->stack;
745	next->gencnt = prev->gencnt;
746	}
747	else
748	{
749	assert (!next->stack);
750	allocate_stack (next, 1);
751	coro_create (&(next->stack->cctx),
752	setup_coro, (void *)next,
753	next->stack->sptr, labs (next->stack->ssize));
754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
755	prev->cursp = stacklevel;
756	/* don't add any code here */
757	}
758	}
759	else
760	{
761	setup_coro (next);
762	next->cursp = stacklevel;
763	}
764	}	802	}
765	}
766		803
767	LOCK;	804	prev__cctx = prev->cctx;
768	if (coro_mortal)	805
769	{	806	/* possibly "free" the cctx */
770	SvREFCNT_dec (coro_mortal);	807	if (prev__cctx->idle_sp == STACKLEVEL)
771	coro_mortal = 0;	808	{
772	}	809	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		810	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		811
		812	prev->cctx = 0;
		813
		814	cctx_put (prev__cctx);
		815	prev__cctx->inuse = 0;
		816	}
		817
		818	if (!next->cctx)
		819	{
		820	next->cctx = cctx_get (aTHX);
		821	assert (!next->cctx->inuse);
		822	next->cctx->inuse = 1;
		823	}
		824
		825	if (prev__cctx != next->cctx)
		826	{
		827	prev__cctx->top_env = PL_top_env;
		828	PL_top_env = next->cctx->top_env;
		829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		830	}
		831
		832	free_coro_mortal (aTHX);
773	UNLOCK;	833	UNLOCK;
		834	}
774	}	835	}
775		836
776	#define SV_CORO(sv,func) \	837	struct transfer_args
777	do { \	838	{
778	if (SvROK (sv)) \	839	struct coro prev, next;
779	sv = SvRV (sv); \	840	};
780	\
781	if (SvTYPE (sv) == SVt_PVHV) \
782	{ \
783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
784	\
785	if (!he) \
786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
787	\
788	(sv) = SvRV (HeVAL(he)); \
789	} \
790	\
791	/* must also be changed inside Coro::Cont::yield */ \
792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
794	\
795	} while(0)
796		841
797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
798		843
		844	/ high level stuff ******************************************************/
		845
799	static void	846	static int
		847	coro_state_destroy (pTHX_ struct coro *coro)
		848	{
		849	if (coro->flags & CF_DESTROYED)
		850	return 0;
		851
		852	coro->flags \|= CF_DESTROYED;
		853
		854	if (coro->flags & CF_READY)
		855	{
		856	/* reduce nready, as destroying a ready coro effectively unreadies it */
		857	/* alternative: look through all ready queues and remove the coro */
		858	LOCK;
		859	--coro_nready;
		860	UNLOCK;
		861	}
		862	else
		863	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
		864
		865	if (coro->mainstack && coro->mainstack != main_mainstack)
		866	{
		867	struct coro temp;
		868
		869	assert (!(coro->flags & CF_RUNNING));
		870
		871	Zero (&temp, 1, struct coro);
		872	temp.save = CORO_SAVE_DEF;
		873
		874	if (coro->flags & CF_RUNNING)
		875	croak ("FATAL: tried to destroy currently running coroutine");
		876
		877	save_perl (aTHX_ &temp);
		878	load_perl (aTHX_ coro);
		879
		880	coro_destroy_stacks (aTHX);
		881
		882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
		883
		884	coro->mainstack = 0;
		885	}
		886
		887	cctx_destroy (coro->cctx);
		888	SvREFCNT_dec (coro->args);
		889
		890	return 1;
		891	}
		892
		893	static int
		894	coro_state_free (pTHX_ SV sv, MAGIC mg)
		895	{
		896	struct coro coro = (struct coro )mg->mg_ptr;
		897	mg->mg_ptr = 0;
		898
		899	if (--coro->refcnt < 0)
		900	{
		901	coro_state_destroy (aTHX_ coro);
		902	Safefree (coro);
		903	}
		904
		905	return 0;
		906	}
		907
		908	static int
		909	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		910	{
		911	struct coro coro = (struct coro )mg->mg_ptr;
		912
		913	++coro->refcnt;
		914
		915	return 0;
		916	}
		917
		918	static MGVTBL coro_state_vtbl = {
		919	0, 0, 0, 0,
		920	coro_state_free,
		921	0,
		922	#ifdef MGf_DUP
		923	coro_state_dup,
		924	#else
		925	# define MGf_DUP 0
		926	#endif
		927	};
		928
		929	static struct coro *
		930	SvSTATE_ (pTHX_ SV *coro)
		931	{
		932	HV *stash;
		933	MAGIC *mg;
		934
		935	if (SvROK (coro))
		936	coro = SvRV (coro);
		937
		938	stash = SvSTASH (coro);
		939	if (stash != coro_stash && stash != coro_state_stash)
		940	{
		941	/* very slow, but rare, check */
		942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		943	croak ("Coro::State object required");
		944	}
		945
		946	mg = CORO_MAGIC (coro);
		947	return (struct coro *)mg->mg_ptr;
		948	}
		949
		950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		951
		952	static void
		953	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
		954	{
		955	ta->prev = SvSTATE (prev_sv);
		956	ta->next = SvSTATE (next_sv);
		957	}
		958
		959	static void
800	api_transfer(pTHX_ SV prev, SV next, int flags)	960	api_transfer (SV prev_sv, SV next_sv)
801	{	961	{
802	SV_CORO (prev, "Coro::transfer");	962	dTHX;
803	SV_CORO (next, "Coro::transfer");	963	struct transfer_args ta;
804		964
805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
		966	TRANSFER (ta);
		967	}
		968
		969	static int
		970	api_save (SV *coro_sv, int new_save)
		971	{
		972	dTHX;
		973	struct coro *coro = SvSTATE (coro_sv);
		974	int old_save = coro->save;
		975
		976	if (new_save >= 0)
		977	coro->save = new_save;
		978
		979	return old_save;
806	}	980	}
807		981
808	/ Coro ******************************************************************/	982	/ Coro ******************************************************************/
809		983
810	#define PRIO_MAX 3
811	#define PRIO_HIGH 1
812	#define PRIO_NORMAL 0
813	#define PRIO_LOW -1
814	#define PRIO_IDLE -3
815	#define PRIO_MIN -4
816
817	/* for Coro.pm */
818	static GV coro_current, coro_idle;
819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
820	static int coro_nready;
821
822	static void	984	static void
823	coro_enq (pTHX_ SV *sv)	985	coro_enq (pTHX_ SV *coro_sv)
824	{	986	{
825	SV **xprio;
826	int prio;
827
828	if (SvTYPE (sv) != SVt_PVHV)
829	croak ("Coro::ready tried to enqueue something that is not a coroutine");
830
831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
832	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
833
834	prio = prio > PRIO_MAX ? PRIO_MAX
835	: prio < PRIO_MIN ? PRIO_MIN
836	: prio;
837
838	av_push (coro_ready [prio - PRIO_MIN], sv);	987	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
839	coro_nready++;
840	}	988	}
841		989
842	static SV *	990	static SV *
843	coro_deq (pTHX_ int min_prio)	991	coro_deq (pTHX_ int min_prio)
844	{	992	{
…		…
847	min_prio -= PRIO_MIN;	995	min_prio -= PRIO_MIN;
848	if (min_prio < 0)	996	if (min_prio < 0)
849	min_prio = 0;	997	min_prio = 0;
850		998
851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
852	if (AvFILLp (coro_ready[prio]) >= 0)	1000	if (AvFILLp (coro_ready [prio]) >= 0)
853	{
854	coro_nready--;
855	return av_shift (coro_ready[prio]);	1001	return av_shift (coro_ready [prio]);
856	}
857		1002
858	return 0;	1003	return 0;
859	}	1004	}
860		1005
861	static void	1006	static int
862	api_ready (SV *coro)	1007	api_ready (SV *coro_sv)
863	{	1008	{
864	dTHX;	1009	dTHX;
		1010	struct coro *coro;
865		1011
866	if (SvROK (coro))	1012	if (SvROK (coro_sv))
867	coro = SvRV (coro);	1013	coro_sv = SvRV (coro_sv);
		1014
		1015	coro = SvSTATE (coro_sv);
		1016
		1017	if (coro->flags & CF_READY)
		1018	return 0;
		1019
		1020	coro->flags \|= CF_READY;
868		1021
869	LOCK;	1022	LOCK;
870	coro_enq (aTHX_ SvREFCNT_inc (coro));	1023	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1024	++coro_nready;
871	UNLOCK;	1025	UNLOCK;
		1026
		1027	return 1;
		1028	}
		1029
		1030	static int
		1031	api_is_ready (SV *coro_sv)
		1032	{
		1033	dTHX;
		1034	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1035	}
		1036
		1037	static void
		1038	prepare_schedule (pTHX_ struct transfer_args *ta)
		1039	{
		1040	SV prev_sv, next_sv;
		1041
		1042	for (;;)
		1043	{
		1044	LOCK;
		1045	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1046
		1047	/* nothing to schedule: call the idle handler */
		1048	if (!next_sv)
		1049	{
		1050	dSP;
		1051	UNLOCK;
		1052
		1053	ENTER;
		1054	SAVETMPS;
		1055
		1056	PUSHMARK (SP);
		1057	PUTBACK;
		1058	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1059
		1060	FREETMPS;
		1061	LEAVE;
		1062	continue;
		1063	}
		1064
		1065	ta->next = SvSTATE (next_sv);
		1066
		1067	/* cannot transfer to destroyed coros, skip and look for next */
		1068	if (ta->next->flags & CF_DESTROYED)
		1069	{
		1070	UNLOCK;
		1071	SvREFCNT_dec (next_sv);
		1072	/* coro_nready is already taken care of by destroy */
		1073	continue;
		1074	}
		1075
		1076	--coro_nready;
		1077	UNLOCK;
		1078	break;
		1079	}
		1080
		1081	/* free this only after the transfer */
		1082	prev_sv = SvRV (coro_current);
		1083	SvRV_set (coro_current, next_sv);
		1084	ta->prev = SvSTATE (prev_sv);
		1085
		1086	assert (ta->next->flags & CF_READY);
		1087	ta->next->flags &= ~CF_READY;
		1088
		1089	LOCK;
		1090	free_coro_mortal (aTHX);
		1091	coro_mortal = prev_sv;
		1092	UNLOCK;
		1093	}
		1094
		1095	static void
		1096	prepare_cede (pTHX_ struct transfer_args *ta)
		1097	{
		1098	api_ready (coro_current);
		1099	prepare_schedule (aTHX_ ta);
		1100	}
		1101
		1102	static int
		1103	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1104	{
		1105	if (coro_nready)
		1106	{
		1107	SV *prev = SvRV (coro_current);
		1108	prepare_schedule (aTHX_ ta);
		1109	api_ready (prev);
		1110	return 1;
		1111	}
		1112	else
		1113	return 0;
872	}	1114	}
873		1115
874	static void	1116	static void
875	api_schedule (void)	1117	api_schedule (void)
876	{	1118	{
877	dTHX;	1119	dTHX;
		1120	struct transfer_args ta;
878		1121
879	SV prev, next;	1122	prepare_schedule (aTHX_ &ta);
880		1123	TRANSFER (ta);
881	LOCK;
882
883	prev = SvRV (GvSV (coro_current));
884	next = coro_deq (aTHX_ PRIO_MIN);
885
886	if (!next)
887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
888
889	/* free this only after the transfer */
890	coro_mortal = prev;
891	SV_CORO (prev, "Coro::schedule");
892
893	SvRV (GvSV (coro_current)) = next;
894
895	SV_CORO (next, "Coro::schedule");
896
897	UNLOCK;
898
899	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
901	}	1124	}
902		1125
903	static void	1126	static int
904	api_cede (void)	1127	api_cede (void)
905	{	1128	{
906	dTHX;	1129	dTHX;
		1130	struct transfer_args ta;
907		1131
908	LOCK;	1132	prepare_cede (aTHX_ &ta);
909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
910	UNLOCK;
911		1133
912	api_schedule ();	1134	if (ta.prev != ta.next)
		1135	{
		1136	TRANSFER (ta);
		1137	return 1;
		1138	}
		1139	else
		1140	return 0;
		1141	}
		1142
		1143	static int
		1144	api_cede_notself (void)
		1145	{
		1146	dTHX;
		1147	struct transfer_args ta;
		1148
		1149	if (prepare_cede_notself (aTHX_ &ta))
		1150	{
		1151	TRANSFER (ta);
		1152	return 1;
		1153	}
		1154	else
		1155	return 0;
913	}	1156	}
914		1157
915	MODULE = Coro::State PACKAGE = Coro::State	1158	MODULE = Coro::State PACKAGE = Coro::State
916		1159
917	PROTOTYPES: ENABLE	1160	PROTOTYPES: DISABLE
918		1161
919	BOOT:	1162	BOOT:
920	{ /* {} necessary for stoopid perl-5.6.x */	1163	{
921	#ifdef USE_ITHREADS	1164	#ifdef USE_ITHREADS
922	MUTEX_INIT (&coro_mutex);	1165	MUTEX_INIT (&coro_mutex);
923	#endif	1166	#endif
924	BOOT_PAGESIZE;	1167	BOOT_PAGESIZE;
925		1168
926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
929		1170
930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
934		1178
935	main_mainstack = PL_mainstack;	1179	main_mainstack = PL_mainstack;
936		1180
937	coroapi.ver = CORO_API_VERSION;	1181	coroapi.ver = CORO_API_VERSION;
938	coroapi.transfer = api_transfer;	1182	coroapi.transfer = api_transfer;
939	}
940		1183
941	Coro::State	1184	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
942	_newprocess(args)	1185	}
943	SV * args	1186
944	PROTOTYPE: $	1187	SV *
		1188	new (char *klass, ...)
945	CODE:	1189	CODE:
946	Coro__State coro;	1190	{
		1191	struct coro *coro;
		1192	HV *hv;
		1193	int i;
947		1194
948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
949	croak ("Coro::State::_newprocess expects an arrayref");
950
951	Newz (0, coro, 1, struct coro);	1195	Newz (0, coro, 1, struct coro);
		1196	coro->args = newAV ();
		1197	coro->save = CORO_SAVE_DEF;
		1198	coro->flags = CF_NEW;
952		1199
953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1200	hv = newHV ();
954	/coro->mainstack = 0; //actual work is done inside transfer /	1201	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
955	/coro->stack = 0;/	1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
956		1203
957	RETVAL = coro;	1204	for (i = 1; i < items; i++)
		1205	av_push (coro->args, newSVsv (ST (i)));
		1206	}
958	OUTPUT:	1207	OUTPUT:
959	RETVAL	1208	RETVAL
960		1209
		1210	int
		1211	save (SV *coro, int new_save = -1)
		1212	CODE:
		1213	RETVAL = api_save (coro, new_save);
		1214	OUTPUT:
		1215	RETVAL
		1216
		1217	int
		1218	save_also (SV *coro_sv, int save_also)
		1219	CODE:
		1220	{
		1221	struct coro *coro = SvSTATE (coro_sv);
		1222	RETVAL = coro->save;
		1223	coro->save \|= save_also;
		1224	}
		1225	OUTPUT:
		1226	RETVAL
		1227
961	void	1228	void
962	transfer(prev, next, flags)	1229	_set_stacklevel (...)
963	SV *prev	1230	ALIAS:
964	SV *next	1231	Coro::State::transfer = 1
965	int flags	1232	Coro::schedule = 2
966	PROTOTYPE: @	1233	Coro::cede = 3
		1234	Coro::cede_notself = 4
967	CODE:	1235	CODE:
968	PUTBACK;	1236	{
969	SV_CORO (next, "Coro::transfer");	1237	struct transfer_args ta;
970	SV_CORO (prev, "Coro::transfer");	1238
971	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1239	switch (ix)
972	SPAGAIN;	1240	{
		1241	case 0:
		1242	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1243	ta.next = 0;
		1244	break;
		1245
		1246	case 1:
		1247	if (items != 2)
		1248	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1249
		1250	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
		1251	break;
		1252
		1253	case 2:
		1254	prepare_schedule (aTHX_ &ta);
		1255	break;
		1256
		1257	case 3:
		1258	prepare_cede (aTHX_ &ta);
		1259	break;
		1260
		1261	case 4:
		1262	if (!prepare_cede_notself (aTHX_ &ta))
		1263	XSRETURN_EMPTY;
		1264
		1265	break;
		1266	}
		1267
		1268	BARRIER;
		1269	TRANSFER (ta);
		1270
		1271	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1272	XSRETURN_YES;
		1273	}
		1274
		1275	bool
		1276	_destroy (SV *coro_sv)
		1277	CODE:
		1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
		1279	OUTPUT:
		1280	RETVAL
973		1281
974	void	1282	void
975	DESTROY(coro)
976	Coro::State coro
977	CODE:
978
979	if (coro->mainstack && coro->mainstack != main_mainstack)
980	{
981	struct coro temp;
982
983	PUTBACK;
984	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
985	LOAD (aTHX_ coro);
986	SPAGAIN;
987
988	destroy_stacks (aTHX);
989
990	LOAD ((&temp)); /* this will get rid of defsv etc.. */
991	SPAGAIN;
992
993	coro->mainstack = 0;
994	}
995
996	deallocate_stack (coro);
997	SvREFCNT_dec (coro->args);
998	Safefree (coro);
999
1000	void
1001	_exit(code)	1283	_exit (code)
1002	int code	1284	int code
1003	PROTOTYPE: $	1285	PROTOTYPE: $
1004	CODE:	1286	CODE:
1005	_exit (code);	1287	_exit (code);
1006		1288
1007	MODULE = Coro::State PACKAGE = Coro::Cont	1289	int
		1290	cctx_stacksize (int new_stacksize = 0)
		1291	CODE:
		1292	RETVAL = coro_stacksize;
		1293	if (new_stacksize)
		1294	coro_stacksize = new_stacksize;
		1295	OUTPUT:
		1296	RETVAL
1008		1297
1009	void	1298	int
1010	yield(...)	1299	cctx_count ()
1011	PROTOTYPE: @	1300	CODE:
1012	CODE:	1301	RETVAL = cctx_count;
1013	SV *yieldstack;	1302	OUTPUT:
1014	SV *sv;	1303	RETVAL
1015	AV *defav = GvAV (PL_defgv);
1016	struct coro prev, next;
1017		1304
1018	yieldstack = *hv_fetch (	1305	int
1019	(HV *)SvRV (GvSV (coro_current)),	1306	cctx_idle ()
1020	"yieldstack", sizeof ("yieldstack") - 1,	1307	CODE:
1021	0	1308	RETVAL = cctx_idle;
1022	);	1309	OUTPUT:
1023		1310	RETVAL
1024	/* set up @_ -- ugly */
1025	av_clear (defav);
1026	av_fill (defav, items - 1);
1027	while (items--)
1028	av_store (defav, items, SvREFCNT_inc (ST(items)));
1029
1030	sv = av_pop ((AV *)SvRV (yieldstack));
1031	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1032	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1033	SvREFCNT_dec (sv);
1034
1035	transfer (aTHX_ prev, next, 0);
1036		1311
1037	MODULE = Coro::State PACKAGE = Coro	1312	MODULE = Coro::State PACKAGE = Coro
1038		1313
1039	BOOT:	1314	BOOT:
1040	{	1315	{
1041	int i;	1316	int i;
		1317
1042	HV *stash = gv_stashpv ("Coro", TRUE);	1318	coro_stash = gv_stashpv ("Coro", TRUE);
1043		1319
1044	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1320	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1045	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1321	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1046	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1047	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1048	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1049	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1050		1326
1051	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1327	coro_current = get_sv ("Coro::current", FALSE);
1052	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1328	SvREADONLY_on (coro_current);
1053		1329
1054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1055	coro_ready[i] = newAV ();	1331	coro_ready[i] = newAV ();
1056		1332
1057	{	1333	{
1058	SV *sv = perl_get_sv("Coro::API", 1);	1334	SV *sv = perl_get_sv("Coro::API", 1);
1059		1335
1060	coroapi.schedule = api_schedule;	1336	coroapi.schedule = api_schedule;
		1337	coroapi.save = api_save;
1061	coroapi.cede = api_cede;	1338	coroapi.cede = api_cede;
		1339	coroapi.cede_notself = api_cede_notself;
1062	coroapi.ready = api_ready;	1340	coroapi.ready = api_ready;
		1341	coroapi.is_ready = api_is_ready;
1063	coroapi.nready = &coro_nready;	1342	coroapi.nready = &coro_nready;
1064	coroapi.current = coro_current;	1343	coroapi.current = coro_current;
1065		1344
1066	GCoroAPI = &coroapi;	1345	GCoroAPI = &coroapi;
1067	sv_setiv (sv, (IV)&coroapi);	1346	sv_setiv (sv, (IV)&coroapi);
1068	SvREADONLY_on (sv);	1347	SvREADONLY_on (sv);
1069	}	1348	}
1070	}	1349	}
1071		1350
1072	#if !PERL_MICRO
1073
1074	void	1351	void
1075	ready(self)	1352	_set_current (SV *current)
1076	SV * self
1077	PROTOTYPE: $	1353	PROTOTYPE: $
1078	CODE:	1354	CODE:
1079	api_ready (self);	1355	SvREFCNT_dec (SvRV (coro_current));
1080		1356	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1081	#endif
1082		1357
1083	int	1358	int
		1359	prio (Coro::State coro, int newprio = 0)
		1360	ALIAS:
		1361	nice = 1
		1362	CODE:
		1363	{
		1364	RETVAL = coro->prio;
		1365
		1366	if (items > 1)
		1367	{
		1368	if (ix)
		1369	newprio = coro->prio - newprio;
		1370
		1371	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1372	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1373
		1374	coro->prio = newprio;
		1375	}
		1376	}
		1377	OUTPUT:
		1378	RETVAL
		1379
		1380	SV *
		1381	ready (SV *self)
		1382	PROTOTYPE: $
		1383	CODE:
		1384	RETVAL = boolSV (api_ready (self));
		1385	OUTPUT:
		1386	RETVAL
		1387
		1388	SV *
		1389	is_ready (SV *self)
		1390	PROTOTYPE: $
		1391	CODE:
		1392	RETVAL = boolSV (api_is_ready (self));
		1393	OUTPUT:
		1394	RETVAL
		1395
		1396	int
1084	nready(...)	1397	nready (...)
1085	PROTOTYPE:	1398	PROTOTYPE:
1086	CODE:	1399	CODE:
1087	RETVAL = coro_nready;	1400	RETVAL = coro_nready;
1088	OUTPUT:	1401	OUTPUT:
1089	RETVAL	1402	RETVAL
1090		1403
1091	void	1404	MODULE = Coro::State PACKAGE = Coro::AIO
1092	schedule(...)	1405
1093	PROTOTYPE:	1406	SV *
		1407	_get_state ()
1094	CODE:	1408	CODE:
1095	api_schedule ();
1096
1097	void
1098	cede(...)
1099	PROTOTYPE:
1100	CODE:
1101	api_cede ();
1102
1103	# and these are hacks
1104	SV *
1105	_aio_get_state ()
1106	CODE:
1107	{	1409	{
1108	struct {	1410	struct io_state *data;
1109	int errorno;
1110	int laststype;
1111	int laststatval;
1112	Stat_t statcache;
1113	} data;
1114		1411
		1412	RETVAL = newSV (sizeof (struct io_state));
		1413	data = (struct io_state *)SvPVX (RETVAL);
		1414	SvCUR_set (RETVAL, sizeof (struct io_state));
		1415	SvPOK_only (RETVAL);
		1416
1115	data.errorno = errno;	1417	data->errorno = errno;
1116	data.laststype = PL_laststype;	1418	data->laststype = PL_laststype;
1117	data.laststatval = PL_laststatval;	1419	data->laststatval = PL_laststatval;
1118	data.statcache = PL_statcache;	1420	data->statcache = PL_statcache;
1119
1120	RETVAL = newSVpvn ((char *)&data, sizeof data);
1121	}	1421	}
1122	OUTPUT:	1422	OUTPUT:
1123	RETVAL	1423	RETVAL
1124		1424
1125	void	1425	void
1126	_aio_set_state (char *data_)	1426	_set_state (char *data_)
1127	PROTOTYPE: $	1427	PROTOTYPE: $
1128	CODE:	1428	CODE:
1129	{	1429	{
1130	struct {	1430	struct io_state data = (void )data_;
1131	int errorno;
1132	int laststype;
1133	int laststatval;
1134	Stat_t statcache;
1135	} data = (void )data_;
1136		1431
1137	errno = data->errorno;	1432	errno = data->errorno;
1138	PL_laststype = data->laststype;	1433	PL_laststype = data->laststype;
1139	PL_laststatval = data->laststatval;	1434	PL_laststatval = data->laststatval;
1140	PL_statcache = data->statcache;	1435	PL_statcache = data->statcache;
1141	}	1436	}
		1437

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Comparing Coro/Coro/State.xs (file contents): Revision 1.82 by root, Mon Nov 20 22:26:16 2006 UTC vs. Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.82 by root, Mon Nov 20 22:26:16 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC