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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC vs.
Revision 1.143 by root, Wed Feb 28 11:43:03 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 CORO_USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		39	#else
		40	# define REGISTER_STACK(cctx,start,end)
		41	#endif
		42
		43	/* the maximum number of idle cctx that will be pooled */
		44	#define MAX_IDLE_CCTX 8
		45
		46	#define PERL_VERSION_ATLEAST(a,b,c) \
		47	(PERL_REVISION > (a) \
		48	\|\| (PERL_REVISION == (a) \
		49	&& (PERL_VERSION > (b) \
		50	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		51
		52	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	53	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	54	# define PL_ppaddr ppaddr
14	# endif	55	# endif
15	# ifndef call_sv	56	# ifndef call_sv
16	# define call_sv perl_call_sv	57	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	68	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	69	# define IS_PADCONST(v) 0
29	# endif	70	# endif
30	#endif	71	#endif
31		72
32	#include <errno.h>	73	/* 5.8.7 */
		74	#ifndef SvRV_set
		75	# define SvRV_set(s,v) SvRV(s) = (v)
		76	#endif
33		77
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	79	# 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	80	#endif
52	# include <limits.h>	81
53	# ifndef PAGESIZE	82	#ifndef CORO_STACKGUARD
54	# define PAGESIZE pagesize	83	# define CORO_STACKGUARD 0
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;
57	# else
58	# define BOOT_PAGESIZE
59	# endif	84	#endif
60	#endif
61		85
62	#define SUB_INIT "Coro::State::initialize"	86	/* prefer perl internal functions over our own? */
		87	#ifndef CORO_PREFER_PERL_FUNCTIONS
		88	# define CORO_PREFER_PERL_FUNCTIONS 0
		89	#endif
63		90
64	/* The next macro should declare a variable stacklevel that contains and approximation	91	/* The next macro should declare a variable stacklevel that contains and approximation
65	* to the current C stack pointer. Its property is that it changes with each call	92	* to the current C stack pointer. Its property is that it changes with each call
66	* and should be unique. */	93	* and should be unique. */
		94	#define dSTACKLEVEL int stacklevel
67	#define dSTACKLEVEL void *stacklevel = &stacklevel	95	#define STACKLEVEL ((void *)&stacklevel)
68		96
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	97	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		98
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	99	#if __GNUC__ >= 3
		100	# define attribute(x) __attribute__(x)
		101	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		102	#else
		103	# define attribute(x)
		104	# define BARRIER
		105	#endif
		106
		107	#define NOINLINE attribute ((noinline))
72		108
73	#include "CoroAPI.h"	109	#include "CoroAPI.h"
74		110
75	#ifdef USE_ITHREADS	111	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	112	static perl_mutex coro_mutex;
…		…
79	#else	115	#else
80	# define LOCK (void)0	116	# define LOCK (void)0
81	# define UNLOCK (void)0	117	# define UNLOCK (void)0
82	#endif	118	#endif
83		119
		120	/* helper storage struct for Coro::AIO */
		121	struct io_state
		122	{
		123	int errorno;
		124	I32 laststype;
		125	int laststatval;
		126	Stat_t statcache;
		127	};
		128
84	static struct CoroAPI coroapi;	129	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	130	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	131	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	132	static SV coro_mortal; / will be freed after next transfer */
88		133
89	/* this is actually not just the c stack but also c registers etc... */	134	static struct coro_cctx *cctx_first;
		135	static int cctx_count, cctx_idle;
		136
		137	/* this is a structure representing a c-level coroutine */
90	typedef struct coro_stack {	138	typedef struct coro_cctx {
91	struct coro_stack *next;	139	struct coro_cctx *next;
92		140
93	void *idle_sp;	141	/* the stack */
94	void *sptr;	142	void *sptr;
95	long ssize; /* positive == mmap, otherwise malloc */	143	ssize_t ssize; /* positive == mmap, otherwise malloc */
96		144
97	/* cpu state */	145	/* cpu state */
		146	void idle_sp; / sp of top-level transfer/schedule/cede call */
		147	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		148	JMPENV *top_env;
98	coro_context cctx;	149	coro_context cctx;
99	} coro_stack;
100		150
101	static coro_stack *main_stack;	151	int inuse;
102		152
		153	#if CORO_USE_VALGRIND
		154	int valgrind_id;
		155	#endif
		156	} coro_cctx;
		157
		158	enum {
		159	CF_RUNNING = 0x0001, /* coroutine is running */
		160	CF_READY = 0x0002, /* coroutine is ready */
		161	CF_NEW = 0x0004, /* has never been switched to */
		162	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		163	};
		164
		165	/* this is a structure representing a perl-level coroutine */
103	struct coro {	166	struct coro {
104	/* optionally saved, might be zero */	167	/* the c coroutine allocated to this perl coroutine, if any */
105	AV *defav;	168	coro_cctx *cctx;
106	SV *defsv;
107	SV *errsv;
108
109	/* saved global state not related to stacks */
110	U8 dowarn;
111	I32 in_eval;
112
113	/* the c stack, if any */
114	coro_stack *stack;
115
116	/* the stacks and related info (callchain etc..) */
117	PERL_SI *curstackinfo;
118	AV *curstack;
119	AV *mainstack;
120	SV **stack_sp;
121	OP *op;
122	SV **curpad;
123	AV *comppad;
124	CV *compcv;
125	SV **stack_base;
126	SV **stack_max;
127	SV **tmps_stack;
128	I32 tmps_floor;
129	I32 tmps_ix;
130	I32 tmps_max;
131	I32 *markstack;
132	I32 *markstack_ptr;
133	I32 *markstack_max;
134	I32 *scopestack;
135	I32 scopestack_ix;
136	I32 scopestack_max;
137	ANY *savestack;
138	I32 savestack_ix;
139	I32 savestack_max;
140	OP **retstack;
141	I32 retstack_ix;
142	I32 retstack_max;
143	PMOP *curpm;
144	COP *curcop;
145	JMPENV *top_env;
146
147	/* coro process data */
148	int prio;
149		169
150	/* data associated with this coroutine (initial args) */	170	/* data associated with this coroutine (initial args) */
151	AV *args;	171	AV *args;
152	int refcnt;	172	int refcnt;
		173	int save; /* CORO_SAVE flags */
		174	int flags; /* CF_ flags */
		175
		176	/* optionally saved, might be zero */
		177	AV defav; / @_ */
		178	SV defsv; / $_ */
		179	SV errsv; / $@ */
		180	SV irssv; / $/ */
		181	SV irssv_sv; / real $/ cache */
		182
		183	#define VAR(name,type) type name;
		184	# include "state.h"
		185	#undef VAR
		186
		187	/* coro process data */
		188	int prio;
153	};	189	};
154		190
155	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
157		193
		194	/ Coro ******************************************************************/
		195
		196	#define PRIO_MAX 3
		197	#define PRIO_HIGH 1
		198	#define PRIO_NORMAL 0
		199	#define PRIO_LOW -1
		200	#define PRIO_IDLE -3
		201	#define PRIO_MIN -4
		202
		203	/* for Coro.pm */
		204	static SV *coro_current;
		205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		206	static int coro_nready;
		207
		208	/ lowlevel stuff ********************************************************/
		209
158	static AV *	210	static AV *
159	coro_clone_padlist (pTHX_ CV *cv)	211	coro_clone_padlist (CV *cv)
160	{	212	{
161	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
162	AV newpadlist, newpad;	214	AV newpadlist, newpad;
163		215
164	newpadlist = newAV ();	216	newpadlist = newAV ();
165	AvREAL_off (newpadlist);	217	AvREAL_off (newpadlist);
166	#if PERL_VERSION < 9	218	#if PERL_VERSION_ATLEAST (5,9,0)
		219	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		220	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	221	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168	#else
169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170	#endif	222	#endif
171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	223	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172	--AvFILLp (padlist);	224	--AvFILLp (padlist);
173		225
174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	226	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
176		228
177	return newpadlist;	229	return newpadlist;
178	}	230	}
179		231
180	static void	232	static void
181	free_padlist (pTHX_ AV *padlist)	233	free_padlist (AV *padlist)
182	{	234	{
183	/* may be during global destruction */	235	/* may be during global destruction */
184	if (SvREFCNT (padlist))	236	if (SvREFCNT (padlist))
185	{	237	{
186	I32 i = AvFILLp (padlist);	238	I32 i = AvFILLp (padlist);
…		…
207	AV *padlist;	259	AV *padlist;
208	AV av = (AV )mg->mg_obj;	260	AV av = (AV )mg->mg_obj;
209		261
210	/* casting is fun. */	262	/* casting is fun. */
211	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
212	free_padlist (aTHX_ padlist);	264	free_padlist (padlist);
213		265
214	SvREFCNT_dec (av);	266	SvREFCNT_dec (av);
215		267
216	return 0;	268	return 0;
217	}	269	}
218		270
219	#define PERL_MAGIC_coro PERL_MAGIC_ext	271	#define PERL_MAGIC_coro PERL_MAGIC_ext
220		272
221	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	273	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
222		274
		275	#define CORO_MAGIC(cv) \
		276	SvMAGIC (cv) \
		277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		278	? SvMAGIC (cv) \
		279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		280	: 0
		281
223	/* the next two functions merely cache the padlists */	282	/* the next two functions merely cache the padlists */
224	static void	283	static void
225	get_padlist (pTHX_ CV *cv)	284	get_padlist (CV *cv)
226	{	285	{
227	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	286	MAGIC *mg = CORO_MAGIC (cv);
		287	AV *av;
228		288
229	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
230	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
231	else	291	else
232	{	292	{
233	#if 0	293	#if CORO_PREFER_PERL_FUNCTIONS
234	/* this should work - but it doesn't :( */	294	/* this is probably cleaner, but also slower? */
235	CV *cp = Perl_cv_clone (aTHX_ cv);	295	CV *cp = Perl_cv_clone (cv);
236	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
237	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
238	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
239	#else	299	#else
240	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	300	CvPADLIST (cv) = coro_clone_padlist (cv);
241	#endif	301	#endif
242	}	302	}
243	}	303	}
244		304
245	static void	305	static void
246	put_padlist (pTHX_ CV *cv)	306	put_padlist (CV *cv)
247	{	307	{
248	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	308	MAGIC *mg = CORO_MAGIC (cv);
		309	AV *av;
249		310
250	if (!mg)	311	if (!mg)
251	{	312	{
252	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	313	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
253	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	314	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
254	mg->mg_virtual = &vtbl_coro;	315	mg->mg_virtual = &vtbl_coro;
255	mg->mg_obj = (SV *)newAV ();	316	mg->mg_obj = (SV *)newAV ();
256	}	317	}
257		318
258	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	319	av = (AV *)mg->mg_obj;
		320
		321	if (AvFILLp (av) >= AvMAX (av))
		322	av_extend (av, AvMAX (av) + 1);
		323
		324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
259	}	325	}
		326
		327	/ load & save, init *****************************************************/
260		328
261	#define SB do {	329	#define SB do {
262	#define SE } while (0)	330	#define SE } while (0)
263		331
264	#define LOAD(state) load_state(aTHX_ (state));
265	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
266
267	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
268		333
269	static void	334	static void
270	load_state(pTHX_ Coro__State c)	335	load_perl (Coro__State c)
271	{	336	{
272	PL_dowarn = c->dowarn;	337	#define VAR(name,type) PL_ ## name = c->name;
273	PL_in_eval = c->in_eval;	338	# include "state.h"
274		339	#undef VAR
275	PL_curstackinfo = c->curstackinfo;
276	PL_curstack = c->curstack;
277	PL_mainstack = c->mainstack;
278	PL_stack_sp = c->stack_sp;
279	PL_op = c->op;
280	PL_curpad = c->curpad;
281	PL_comppad = c->comppad;
282	PL_compcv = c->compcv;
283	PL_stack_base = c->stack_base;
284	PL_stack_max = c->stack_max;
285	PL_tmps_stack = c->tmps_stack;
286	PL_tmps_floor = c->tmps_floor;
287	PL_tmps_ix = c->tmps_ix;
288	PL_tmps_max = c->tmps_max;
289	PL_markstack = c->markstack;
290	PL_markstack_ptr = c->markstack_ptr;
291	PL_markstack_max = c->markstack_max;
292	PL_scopestack = c->scopestack;
293	PL_scopestack_ix = c->scopestack_ix;
294	PL_scopestack_max = c->scopestack_max;
295	PL_savestack = c->savestack;
296	PL_savestack_ix = c->savestack_ix;
297	PL_savestack_max = c->savestack_max;
298	#if PERL_VERSION < 9
299	PL_retstack = c->retstack;
300	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;
302	#endif
303	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;
305	PL_top_env = c->top_env;
306		340
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		344	if (c->irssv)
		345	{
		346	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		347	SvREFCNT_dec (c->irssv);
		348	else
		349	{
		350	REPLACE_SV (PL_rs, c->irssv);
		351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		352	sv_setsv (c->irssv_sv, PL_rs);
		353	}
		354	}
310		355
311	{	356	{
312	dSP;	357	dSP;
313	CV *cv;	358	CV *cv;
314		359
315	/* now do the ugly restore mess */	360	/* now do the ugly restore mess */
316	while ((cv = (CV *)POPs))	361	while ((cv = (CV *)POPs))
317	{	362	{
318	AV padlist = (AV )POPs;
319
320	if (padlist)
321	{
322	put_padlist (aTHX_ cv); /* mark this padlist as available */	363	put_padlist (cv); /* mark this padlist as available */
323	CvPADLIST(cv) = padlist;	364	CvDEPTH (cv) = PTR2IV (POPs);
324	}	365	CvPADLIST (cv) = (AV *)POPs;
325
326	++CvDEPTH(cv);
327	}	366	}
328		367
329	PUTBACK;	368	PUTBACK;
330	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
331	}	371	}
332		372
333	static void	373	static void
334	save_state(pTHX_ Coro__State c, int flags)	374	save_perl (Coro__State c)
335	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
336	{	377	{
337	dSP;	378	dSP;
338	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
339	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
340	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
342	/*	383	/*
343	* the worst thing you can imagine happens first - we have to save	384	* the worst thing you can imagine happens first - we have to save
344	* (and reinitialize) all cv's in the whole callchain :(	385	* (and reinitialize) all cv's in the whole callchain :(
345	*/	386	*/
346		387
		388	EXTEND (SP, 3 + 1);
347	PUSHs (Nullsv);	389	PUSHs (Nullsv);
348	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
349	for (;;)	391	for (;;)
350	{	392	{
351	while (cxix >= 0)	393	while (cxix >= 0)
352	{	394	{
353	PERL_CONTEXT *cx = &ccstk[cxix--];	395	PERL_CONTEXT *cx = &ccstk[cxix--];
354		396
355	if (CxTYPE(cx) == CXt_SUB)	397	if (CxTYPE (cx) == CXt_SUB)
356	{	398	{
357	CV *cv = cx->blk_sub.cv;	399	CV *cv = cx->blk_sub.cv;
		400
358	if (CvDEPTH(cv))	401	if (CvDEPTH (cv))
359	{	402	{
360	EXTEND (SP, CvDEPTH(cv)*2);	403	EXTEND (SP, 3);
361
362	while (--CvDEPTH(cv))
363	{
364	/* this tells the restore code to increment CvDEPTH */
365	PUSHs (Nullsv);
366	PUSHs ((SV *)cv);
367	}
368
369	PUSHs ((SV *)CvPADLIST(cv));	404	PUSHs ((SV *)CvPADLIST (cv));
		405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
370	PUSHs ((SV *)cv);	406	PUSHs ((SV *)cv);
371		407
		408	CvDEPTH (cv) = 0;
372	get_padlist (aTHX_ cv);	409	get_padlist (cv);
373	}	410	}
374	}	411	}
375	#ifdef CXt_FORMAT
376	else if (CxTYPE(cx) == CXt_FORMAT)
377	{
378	/* I never used formats, so how should I know how these are implemented? */
379	/* my bold guess is as a simple, plain sub... */
380	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
381	}
382	#endif
383	}	412	}
384		413
385	if (top_si->si_type == PERLSI_MAIN)	414	if (top_si->si_type == PERLSI_MAIN)
386	break;	415	break;
387		416
…		…
391	}	420	}
392		421
393	PUTBACK;	422	PUTBACK;
394	}	423	}
395		424
396	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
397	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
398	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
399		429
400	c->dowarn = PL_dowarn;	430	#define VAR(name,type)c->name = PL_ ## name;
401	c->in_eval = PL_in_eval;	431	# include "state.h"
402		432	#undef VAR
403	c->curstackinfo = PL_curstackinfo;
404	c->curstack = PL_curstack;
405	c->mainstack = PL_mainstack;
406	c->stack_sp = PL_stack_sp;
407	c->op = PL_op;
408	c->curpad = PL_curpad;
409	c->comppad = PL_comppad;
410	c->compcv = PL_compcv;
411	c->stack_base = PL_stack_base;
412	c->stack_max = PL_stack_max;
413	c->tmps_stack = PL_tmps_stack;
414	c->tmps_floor = PL_tmps_floor;
415	c->tmps_ix = PL_tmps_ix;
416	c->tmps_max = PL_tmps_max;
417	c->markstack = PL_markstack;
418	c->markstack_ptr = PL_markstack_ptr;
419	c->markstack_max = PL_markstack_max;
420	c->scopestack = PL_scopestack;
421	c->scopestack_ix = PL_scopestack_ix;
422	c->scopestack_max = PL_scopestack_max;
423	c->savestack = PL_savestack;
424	c->savestack_ix = PL_savestack_ix;
425	c->savestack_max = PL_savestack_max;
426	#if PERL_VERSION < 9
427	c->retstack = PL_retstack;
428	c->retstack_ix = PL_retstack_ix;
429	c->retstack_max = PL_retstack_max;
430	#endif
431	c->curpm = PL_curpm;
432	c->curcop = PL_curcop;
433	c->top_env = PL_top_env;
434	}	433	}
435		434
436	/*	435	/*
437	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
439	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
440	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
441	*/	440	*/
		441	#if CORO_PREFER_PERL_FUNCTIONS
		442	# define coro_init_stacks init_stacks
		443	#else
442	static void	444	static void
443	coro_init_stacks (pTHX)	445	coro_init_stacks ()
444	{	446	{
445	LOCK;
446
447	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
448	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	449	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		451
452	PL_stack_base = AvARRAY(PL_curstack);	452	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	453	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		455
456	New(50,PL_tmps_stack,96,SV*);	456	New(50,PL_tmps_stack,128,SV*);
457	PL_tmps_floor = -1;	457	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	458	PL_tmps_ix = -1;
459	PL_tmps_max = 96;	459	PL_tmps_max = 128;
460		460
461	New(54,PL_markstack,16,I32);	461	New(54,PL_markstack,32,I32);
462	PL_markstack_ptr = PL_markstack;	462	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 16;	463	PL_markstack_max = PL_markstack + 32;
464		464
465	#ifdef SET_MARK_OFFSET	465	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	466	SET_MARK_OFFSET;
467	#endif	467	#endif
468		468
469	New(54,PL_scopestack,16,I32);	469	New(54,PL_scopestack,32,I32);
470	PL_scopestack_ix = 0;	470	PL_scopestack_ix = 0;
471	PL_scopestack_max = 16;	471	PL_scopestack_max = 32;
472		472
473	New(54,PL_savestack,96,ANY);	473	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	474	PL_savestack_ix = 0;
475	PL_savestack_max = 96;	475	PL_savestack_max = 64;
476		476
477	#if PERL_VERSION < 9	477	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,8,OP*);	478	New(54,PL_retstack,16,OP*);
479	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
480	PL_retstack_max = 8;	480	PL_retstack_max = 16;
481	#endif	481	#endif
482
483	UNLOCK;
484	}	482	}
		483	#endif
485		484
486	/*	485	/*
487	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
488	*/	487	*/
489	static void	488	static void
490	destroy_stacks(pTHX)	489	coro_destroy_stacks ()
491	{	490	{
492	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
493	{	492	{
494	/* is this ugly, I ask? */	493	/* restore all saved variables and stuff */
495	LEAVE_SCOPE (0);	494	LEAVE_SCOPE (0);
		495	assert (PL_tmps_floor == -1);
496		496
497	/* sure it is, but more important: is it correct?? :/ */	497	/* free all temporaries */
498	FREETMPS;	498	FREETMPS;
		499	assert (PL_tmps_ix == -1);
499		500
		501	/* unwind all extra stacks */
500	/POPSTACK_TO (PL_mainstack);//D//use/	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
501	}	506	}
502		507
503	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
504	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
505		510
506	while (PL_curstackinfo)	511	while (PL_curstackinfo)
507	{	512	{
508	PERL_SI *p = PL_curstackinfo->si_prev;	513	PERL_SI *p = PL_curstackinfo->si_prev;
509		514
510	{ /D//remove/
511	dSP;
512	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
513	PUTBACK; /* possibly superfluous */
514	}
515
516	if (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
517	{
518	dounwind (-1);/D//remove/
519	SvREFCNT_dec (PL_curstackinfo->si_stack);	516	SvREFCNT_dec (PL_curstackinfo->si_stack);
520	}
521		517
522	Safefree (PL_curstackinfo->si_cxstack);	518	Safefree (PL_curstackinfo->si_cxstack);
523	Safefree (PL_curstackinfo);	519	Safefree (PL_curstackinfo);
524	PL_curstackinfo = p;	520	PL_curstackinfo = p;
525	}	521	}
526		522
527	Safefree (PL_tmps_stack);	523	Safefree (PL_tmps_stack);
528	Safefree (PL_markstack);	524	Safefree (PL_markstack);
529	Safefree (PL_scopestack);	525	Safefree (PL_scopestack);
530	Safefree (PL_savestack);	526	Safefree (PL_savestack);
531	#if PERL_VERSION < 9	527	#if !PERL_VERSION_ATLEAST (5,9,0)
532	Safefree (PL_retstack);	528	Safefree (PL_retstack);
533	#endif	529	#endif
534	}	530	}
		531
		532	/ coroutine stack handling **********************************************/
535		533
536	static void	534	static void
537	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
538	{	536	{
539	/*	537	/*
540	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
541	*/	539	*/
542	dTHX;	540
		541	coro_init_stacks ();
		542
		543	PL_curcop = &PL_compiling;
		544	PL_in_eval = EVAL_NULL;
		545	PL_comppad = 0;
		546	PL_curpm = 0;
		547	PL_localizing = 0;
		548	PL_dirty = 0;
		549	PL_restartop = 0;
		550
		551	{
		552	dSP;
		553	LOGOP myop;
		554
		555	SvREFCNT_dec (GvAV (PL_defgv));
		556	GvAV (PL_defgv) = coro->args; coro->args = 0;
		557
		558	Zero (&myop, 1, LOGOP);
		559	myop.op_next = Nullop;
		560	myop.op_flags = OPf_WANT_VOID;
		561
		562	PUSHMARK (SP);
		563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		564	PUTBACK;
		565	PL_op = (OP *)&myop;
		566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		567	SPAGAIN;
		568	}
		569
		570	ENTER; /* necessary e.g. for dounwind */
		571	}
		572
		573	static void
		574	free_coro_mortal ()
		575	{
		576	if (coro_mortal)
		577	{
		578	SvREFCNT_dec (coro_mortal);
		579	coro_mortal = 0;
		580	}
		581	}
		582
		583	/* inject a fake call to Coro::State::_cctx_init into the execution */
		584	static void NOINLINE
		585	prepare_cctx (coro_cctx *cctx)
		586	{
543	dSP;	587	dSP;
544	UNOP myop;	588	LOGOP myop;
545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
546		589
547	coro_init_stacks (aTHX);
548	/PL_curcop = 0;/
549	/PL_in_eval = PL_in_eval;/ /* inherit */
550	SvREFCNT_dec (GvAV (PL_defgv));
551	GvAV (PL_defgv) = coro->args; coro->args = 0;
552
553	SPAGAIN;
554
555	Zero (&myop, 1, UNOP);	590	Zero (&myop, 1, LOGOP);
556	myop.op_next = Nullop;	591	myop.op_next = PL_op;
557	myop.op_flags = OPf_WANT_VOID;	592	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
558		593
		594	PUSHMARK (SP);
		595	EXTEND (SP, 2);
		596	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		597	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		598	PUTBACK;
559	PL_op = (OP *)&myop;	599	PL_op = (OP *)&myop;
560
561	PUSHMARK(SP);
562	XPUSHs (sub_init);
563	PUTBACK;
564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
565	SPAGAIN;	601	SPAGAIN;
566
567	ENTER; /* necessary e.g. for dounwind */
568	}	602	}
569		603
570	static void	604	static void
571	transfer_tail ()	605	coro_run (void *arg)
572	{	606	{
573	if (coro_mortal)	607	/* coro_run is the alternative tail of transfer(), so unlock here. */
574	{
575	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;
577	}
578
579	UNLOCK;	608	UNLOCK;
580	}
581		609
582	static void
583	coro_run (void *arg)
584	{
585	/*	610	/*
586	* this is a _very_ stripped down perl interpreter ;)	611	* this is a _very_ stripped down perl interpreter ;)
587	*/	612	*/
588	dTHX;
589
590	transfer_tail ();
591
592	PL_top_env = &PL_start_env;	613	PL_top_env = &PL_start_env;
593	PL_restartop = PL_op->op_next;	614
		615	/* inject call to cctx_init */
		616	prepare_cctx ((coro_cctx *)arg);
		617
594	/* somebody will hit me for both perl_run and PL_restart_top */	618	/* somebody will hit me for both perl_run and PL_restartop */
595	perl_run (aTHX_ PERL_GET_CONTEXT);	619	PL_restartop = PL_op;
		620	perl_run (PL_curinterp);
596		621
		622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
597	abort ();	623	abort ();
598	}	624	}
599		625
600	static coro_stack *	626	static coro_cctx *
601	stack_new ()	627	cctx_new ()
602	{	628	{
603	coro_stack *stack;	629	coro_cctx *cctx;
604		630
		631	++cctx_count;
		632
605	New (0, stack, 1, coro_stack);	633	Newz (0, cctx, 1, coro_cctx);
606		634
607	#if HAVE_MMAP	635	#if HAVE_MMAP
608		636
609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
		638	/* mmap supposedly does allocate-on-write for us */
610	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
611		640
612	if (stack->sptr == (void *)-1)	641	if (cctx->sptr != (void *)-1)
		642	{
		643	# if CORO_STACKGUARD
		644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
		645	# endif
		646	REGISTER_STACK (
		647	cctx,
		648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		649	cctx->ssize + (char *)cctx->sptr
		650	);
		651
		652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
613	{	653	}
		654	else
		655	#endif
		656	{
		657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);
		658	New (0, cctx->sptr, CORO_STACKSIZE, long);
		659
		660	if (!cctx->sptr)
		661	{
614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");	662	perror ("FATAL: unable to allocate stack for coroutine");
615	_exit (EXIT_FAILURE);	663	_exit (EXIT_FAILURE);
616	}	664	}
617		665
618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	666	REGISTER_STACK (
		667	cctx,
		668	(char *)cctx->sptr,
		669	(char *)cctx->sptr - cctx->ssize
		670	);
619		671
620	#else	672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);
621
622	stack->ssize = STACKSIZE * (long)sizeof (long);
623	New (0, stack->sptr, STACKSIZE, long);
624
625	if (!stack->sptr)
626	{	673	}
627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");
628	_exit (EXIT_FAILURE);
629	}
630		674
631	#endif
632
633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);
634
635	return stack;	675	return cctx;
636	}	676	}
637		677
638	static void	678	static void
639	stack_free (coro_stack *stack)	679	cctx_destroy (coro_cctx *cctx)
640	{	680	{
641	if (!stack \|\| stack == main_stack)	681	if (!cctx)
642	return;	682	return;
643		683
		684	--cctx_count;
		685
		686	#if CORO_USE_VALGRIND
		687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		688	#endif
		689
644	#if HAVE_MMAP	690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
645	munmap (stack->sptr, stack->ssize);	692	munmap (cctx->sptr, cctx->ssize);
646	#else
647	Safefree (stack->sptr);
648	#endif
649
650	Safefree (stack);
651	}
652
653	static coro_stack *stack_first;
654
655	static void
656	stack_get (struct coro *coro)
657	{
658	if (stack_first)
659	{
660	coro->stack = stack_first;
661	stack_first = stack_first->next;
662	}
663	else	693	else
664	coro->stack = stack_new ();	694	#endif
665	}	695	Safefree (cctx->sptr);
666		696
667	static void	697	Safefree (cctx);
668	stack_put (coro_stack *stack)
669	{
670	stack->next = stack_first;
671	stack_first = stack;
672	}	698	}
		699
		700	static coro_cctx *
		701	cctx_get ()
		702	{
		703	coro_cctx *cctx;
		704
		705	if (cctx_first)
		706	{
		707	cctx = cctx_first;
		708	cctx_first = cctx->next;
		709	--cctx_idle;
		710	}
		711	else
		712	{
		713	cctx = cctx_new ();
		714	PL_op = PL_op->op_next;
		715	}
		716
		717	return cctx;
		718	}
		719
		720	static void
		721	cctx_put (coro_cctx *cctx)
		722	{
		723	/* free another cctx if overlimit */
		724	if (cctx_idle >= MAX_IDLE_CCTX)
		725	{
		726	coro_cctx *first = cctx_first;
		727	cctx_first = first->next;
		728	--cctx_idle;
		729
		730	assert (!first->inuse);
		731	cctx_destroy (first);
		732	}
		733
		734	++cctx_idle;
		735	cctx->next = cctx_first;
		736	cctx_first = cctx;
		737	}
		738
		739	/ coroutine switching ***************************************************/
673		740
674	/* never call directly, always through the coro_state_transfer global variable */	741	/* never call directly, always through the coro_state_transfer global variable */
675	static void	742	static void NOINLINE
676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	743	transfer (struct coro prev, struct coro next)
677	{	744	{
678	dSTACKLEVEL;	745	dSTACKLEVEL;
679		746
680	/* sometimes transfer is only called to set idle_sp */	747	/* sometimes transfer is only called to set idle_sp */
681	if (!prev->stack->idle_sp)	748	if (!next)
682	prev->stack->idle_sp = stacklevel;	749	{
683		750	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
684	LOCK;	751	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
685		752	}
686	if (prev != next)	753	else if (prev != next)
687	{	754	{
688	coro_stack *prev_stack = prev->stack;	755	coro_cctx *prev__cctx;
689		756
690	/* possibly "free" the stack */	757	if (prev->flags & CF_NEW)
691	if (prev_stack->idle_sp == stacklevel)
692	{	758	{
693	stack_put (prev_stack);	759	/* create a new empty context */
694	prev->stack = 0;	760	Newz (0, prev->cctx, 1, coro_cctx);
		761	prev->cctx->inuse = 1;
		762	prev->flags &= ~CF_NEW;
		763	prev->flags \|= CF_RUNNING;
695	}	764	}
696		765
697	if (!next->mainstack)	766	/TODO: must not croak here /
		767	if (!prev->flags & CF_RUNNING)
		768	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		769
		770	if (next->flags & CF_RUNNING)
		771	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		772
		773	if (next->flags & CF_DESTROYED)
		774	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		775
		776	prev->flags &= ~CF_RUNNING;
		777	next->flags \|= CF_RUNNING;
		778
		779	LOCK;
		780
		781	if (next->flags & CF_NEW)
698	{	782	{
		783	/* need to start coroutine */
		784	next->flags &= ~CF_NEW;
699	/* first get rid of the old state */	785	/* first get rid of the old state */
700	SAVE (prev, -1);	786	save_perl (prev);
701	/* setup coroutine call */	787	/* setup coroutine call */
702	setup_coro (next);	788	setup_coro (next);
703	next->stack = 0;	789	/* need a new stack */
		790	assert (!next->cctx);
704	}	791	}
705	else	792	else
706	{	793	{
707	SAVE (prev, flags);	794	/* coroutine already started */
708	LOAD (next);	795	save_perl (prev);
		796	load_perl (next);
709	}	797	}
710		798
		799	prev__cctx = prev->cctx;
		800
		801	/* possibly "free" the cctx */
		802	if (prev__cctx->idle_sp == STACKLEVEL)
		803	{
		804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		805	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		806
		807	prev->cctx = 0;
		808
		809	cctx_put (prev__cctx);
		810	prev__cctx->inuse = 0;
		811	}
		812
711	if (!next->stack)	813	if (!next->cctx)
712	stack_get (next);	814	{
		815	next->cctx = cctx_get ();
		816	assert (!next->cctx->inuse);
		817	next->cctx->inuse = 1;
		818	}
713		819
714	if (prev_stack != next->stack)	820	if (prev__cctx != next->cctx)
		821	{
		822	prev__cctx->top_env = PL_top_env;
		823	PL_top_env = next->cctx->top_env;
715	coro_transfer (&prev_stack->cctx, &next->stack->cctx);	824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
716	}	825	}
717		826
718	transfer_tail ();	827	free_coro_mortal ();
		828	UNLOCK;
		829	}
719	}	830	}
720		831
721	/* use this function pointer to call the above function */	832	struct transfer_args
722	/* this is done to increase chances of the compiler not inlining the call */	833	{
723	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	834	struct coro prev, next;
		835	};
724		836
		837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
		838
		839	/ high level stuff ******************************************************/
		840
725	static void	841	static int
726	coro_state_destroy (struct coro *coro)	842	coro_state_destroy (struct coro *coro)
727	{	843	{
728	if (coro->refcnt--)	844	if (coro->flags & CF_DESTROYED)
729	return;	845	return 0;
		846
		847	coro->flags \|= CF_DESTROYED;
		848
		849	if (coro->flags & CF_READY)
		850	{
		851	/* reduce nready, as destroying a ready coro effectively unreadies it */
		852	/* alternative: look through all ready queues and remove the coro */
		853	LOCK;
		854	--coro_nready;
		855	UNLOCK;
		856	}
		857	else
		858	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
730		859
731	if (coro->mainstack && coro->mainstack != main_mainstack)	860	if (coro->mainstack && coro->mainstack != main_mainstack)
732	{	861	{
733	struct coro temp;	862	struct coro temp;
734		863
735	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	864	assert (!(coro->flags & CF_RUNNING));
736	LOAD (aTHX_ coro);
737		865
		866	Zero (&temp, 1, struct coro);
		867	temp.save = CORO_SAVE_ALL;
		868
		869	if (coro->flags & CF_RUNNING)
		870	croak ("FATAL: tried to destroy currently running coroutine");
		871
		872	save_perl (&temp);
		873	load_perl (coro);
		874
738	destroy_stacks (aTHX);	875	coro_destroy_stacks ();
739		876
740	LOAD ((&temp)); /* this will get rid of defsv etc.. */	877	load_perl (&temp); /* this will get rid of defsv etc.. */
741		878
742	coro->mainstack = 0;	879	coro->mainstack = 0;
743	}	880	}
744		881
745	stack_free (coro->stack);	882	cctx_destroy (coro->cctx);
746	SvREFCNT_dec (coro->args);	883	SvREFCNT_dec (coro->args);
747	Safefree (coro);	884
		885	return 1;
748	}	886	}
749		887
750	static int	888	static int
751	coro_state_clear (SV sv, MAGIC mg)	889	coro_state_free (pTHX_ SV sv, MAGIC mg)
752	{	890	{
753	struct coro coro = (struct coro )mg->mg_ptr;	891	struct coro coro = (struct coro )mg->mg_ptr;
754	mg->mg_ptr = 0;	892	mg->mg_ptr = 0;
755		893
		894	if (--coro->refcnt < 0)
		895	{
756	coro_state_destroy (coro);	896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
757		899
758	return 0;	900	return 0;
759	}	901	}
760		902
761	static int	903	static int
762	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	904	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
763	{	905	{
764	struct coro coro = (struct coro )mg->mg_ptr;	906	struct coro coro = (struct coro )mg->mg_ptr;
765		907
766	++coro->refcnt;	908	++coro->refcnt;
767		909
768	return 0;	910	return 0;
769	}	911	}
770		912
771	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	913	static MGVTBL coro_state_vtbl = {
		914	0, 0, 0, 0,
		915	coro_state_free,
		916	0,
		917	#ifdef MGf_DUP
		918	coro_state_dup,
		919	#else
		920	# define MGf_DUP 0
		921	#endif
		922	};
772		923
773	static struct coro *	924	static struct coro *
774	SvSTATE (SV *coro)	925	SvSTATE (SV *coro)
775	{	926	{
776	HV *stash;	927	HV *stash;
…		…
791	assert (mg->mg_type == PERL_MAGIC_ext);	942	assert (mg->mg_type == PERL_MAGIC_ext);
792	return (struct coro *)mg->mg_ptr;	943	return (struct coro *)mg->mg_ptr;
793	}	944	}
794		945
795	static void	946	static void
		947	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		948	{
		949	ta->prev = SvSTATE (prev_sv);
		950	ta->next = SvSTATE (next_sv);
		951	}
		952
		953	static void
796	api_transfer (pTHX_ SV prev, SV next, int flags)	954	api_transfer (SV prev_sv, SV next_sv)
797	{	955	{
798	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	956	struct transfer_args ta;
		957
		958	prepare_transfer (&ta, prev_sv, next_sv);
		959	TRANSFER (ta);
		960	}
		961
		962	static int
		963	api_save (SV *coro_sv, int new_save)
		964	{
		965	struct coro *coro = SvSTATE (coro_sv);
		966	int old_save = coro->save;
		967
		968	if (new_save >= 0)
		969	coro->save = new_save;
		970
		971	return old_save;
799	}	972	}
800		973
801	/ Coro ******************************************************************/	974	/ Coro ******************************************************************/
802		975
803	#define PRIO_MAX 3
804	#define PRIO_HIGH 1
805	#define PRIO_NORMAL 0
806	#define PRIO_LOW -1
807	#define PRIO_IDLE -3
808	#define PRIO_MIN -4
809
810	/* for Coro.pm */
811	static GV coro_current, coro_idle;
812	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
813	static int coro_nready;
814
815	static void	976	static void
816	coro_enq (pTHX_ SV *sv)	977	coro_enq (SV *coro_sv)
817	{	978	{
818	int prio;
819
820	if (SvTYPE (sv) != SVt_PVHV)
821	croak ("Coro::ready tried to enqueue something that is not a coroutine");
822
823	prio = SvSTATE (sv)->prio;
824
825	av_push (coro_ready [prio - PRIO_MIN], sv);	979	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
826	coro_nready++;
827	}	980	}
828		981
829	static SV *	982	static SV *
830	coro_deq (pTHX_ int min_prio)	983	coro_deq (int min_prio)
831	{	984	{
832	int prio = PRIO_MAX - PRIO_MIN;	985	int prio = PRIO_MAX - PRIO_MIN;
833		986
834	min_prio -= PRIO_MIN;	987	min_prio -= PRIO_MIN;
835	if (min_prio < 0)	988	if (min_prio < 0)
836	min_prio = 0;	989	min_prio = 0;
837		990
838	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	991	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
839	if (AvFILLp (coro_ready [prio]) >= 0)	992	if (AvFILLp (coro_ready [prio]) >= 0)
840	{
841	coro_nready--;
842	return av_shift (coro_ready [prio]);	993	return av_shift (coro_ready [prio]);
843	}
844		994
845	return 0;	995	return 0;
846	}	996	}
847		997
848	static void	998	static int
849	api_ready (SV *coro)	999	api_ready (SV *coro_sv)
850	{	1000	{
851	dTHX;	1001	struct coro *coro;
852		1002
853	if (SvROK (coro))	1003	if (SvROK (coro_sv))
854	coro = SvRV (coro);	1004	coro_sv = SvRV (coro_sv);
		1005
		1006	coro = SvSTATE (coro_sv);
		1007
		1008	if (coro->flags & CF_READY)
		1009	return 0;
		1010
		1011	coro->flags \|= CF_READY;
855		1012
856	LOCK;	1013	LOCK;
857	coro_enq (aTHX_ SvREFCNT_inc (coro));	1014	coro_enq (SvREFCNT_inc (coro_sv));
		1015	++coro_nready;
858	UNLOCK;	1016	UNLOCK;
		1017
		1018	return 1;
		1019	}
		1020
		1021	static int
		1022	api_is_ready (SV *coro_sv)
		1023	{
		1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1025	}
		1026
		1027	static void
		1028	prepare_schedule (struct transfer_args *ta)
		1029	{
		1030	SV prev_sv, next_sv;
		1031
		1032	for (;;)
		1033	{
		1034	LOCK;
		1035	next_sv = coro_deq (PRIO_MIN);
		1036
		1037	/* nothing to schedule: call the idle handler */
		1038	if (!next_sv)
		1039	{
		1040	dSP;
		1041	UNLOCK;
		1042
		1043	ENTER;
		1044	SAVETMPS;
		1045
		1046	PUSHMARK (SP);
		1047	PUTBACK;
		1048	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1049
		1050	FREETMPS;
		1051	LEAVE;
		1052	continue;
		1053	}
		1054
		1055	ta->next = SvSTATE (next_sv);
		1056
		1057	/* cannot transfer to destroyed coros, skip and look for next */
		1058	if (ta->next->flags & CF_DESTROYED)
		1059	{
		1060	UNLOCK;
		1061	SvREFCNT_dec (next_sv);
		1062	/* coro_nready is already taken care of by destroy */
		1063	continue;
		1064	}
		1065
		1066	--coro_nready;
		1067	UNLOCK;
		1068	break;
		1069	}
		1070
		1071	/* free this only after the transfer */
		1072	prev_sv = SvRV (coro_current);
		1073	SvRV_set (coro_current, next_sv);
		1074	ta->prev = SvSTATE (prev_sv);
		1075
		1076	assert (ta->next->flags & CF_READY);
		1077	ta->next->flags &= ~CF_READY;
		1078
		1079	LOCK;
		1080	free_coro_mortal ();
		1081	coro_mortal = prev_sv;
		1082	UNLOCK;
		1083	}
		1084
		1085	static void
		1086	prepare_cede (struct transfer_args *ta)
		1087	{
		1088	api_ready (coro_current);
		1089	prepare_schedule (ta);
		1090	}
		1091
		1092	static int
		1093	prepare_cede_notself (struct transfer_args *ta)
		1094	{
		1095	if (coro_nready)
		1096	{
		1097	SV *prev = SvRV (coro_current);
		1098	prepare_schedule (ta);
		1099	api_ready (prev);
		1100	return 1;
		1101	}
		1102	else
		1103	return 0;
859	}	1104	}
860		1105
861	static void	1106	static void
862	api_schedule (void)	1107	api_schedule (void)
863	{	1108	{
864	dTHX;	1109	struct transfer_args ta;
865		1110
866	SV prev, next;	1111	prepare_schedule (&ta);
867	SV *current = GvSV (coro_current);	1112	TRANSFER (ta);
868
869	for (;;)
870	{
871	LOCK;
872
873	next = coro_deq (aTHX_ PRIO_MIN);
874
875	if (next)
876	break;
877
878	UNLOCK;
879
880	{
881	dSP;
882
883	ENTER;
884	SAVETMPS;
885
886	PUSHMARK (SP);
887	PUTBACK;
888	call_sv (GvSV (coro_idle), G_DISCARD);
889
890	FREETMPS;
891	LEAVE;
892	}
893	}
894
895	prev = SvRV (current);
896	SvRV (current) = next;
897
898	/* free this only after the transfer */
899	coro_mortal = prev;
900
901	UNLOCK;
902
903	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
904	}	1113	}
905		1114
906	static int coro_cede_self;
907
908	static void	1115	static int
909	api_cede (void)	1116	api_cede (void)
910	{	1117	{
911	dTHX;	1118	struct transfer_args ta;
912	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
913		1119
914	LOCK;	1120	prepare_cede (&ta);
915		1121
916	if (coro_cede_self)	1122	if (ta.prev != ta.next)
917	{	1123	{
918	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];	1124	TRANSFER (ta);
919	av_unshift (runqueue, 1);	1125	return 1;
920	av_store (runqueue, 0, current);
921	coro_nready++;
922	coro_cede_self = 0;
923	}	1126	}
924	else	1127	else
925	coro_enq (aTHX_ current);	1128	return 0;
		1129	}
926		1130
927	UNLOCK;	1131	static int
		1132	api_cede_notself (void)
		1133	{
		1134	struct transfer_args ta;
928		1135
929	api_schedule ();	1136	if (prepare_cede_notself (&ta))
		1137	{
		1138	TRANSFER (ta);
		1139	return 1;
		1140	}
		1141	else
		1142	return 0;
930	}	1143	}
931		1144
932	MODULE = Coro::State PACKAGE = Coro::State	1145	MODULE = Coro::State PACKAGE = Coro::State
933		1146
934	PROTOTYPES: DISABLE	1147	PROTOTYPES: DISABLE
…		…
940	#endif	1153	#endif
941	BOOT_PAGESIZE;	1154	BOOT_PAGESIZE;
942		1155
943	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1156	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
944		1157
945	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1158	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
946	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1159	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
947	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1160	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1161	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1162	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
948		1163
949	main_mainstack = PL_mainstack;	1164	main_mainstack = PL_mainstack;
950		1165
951	coroapi.ver = CORO_API_VERSION;	1166	coroapi.ver = CORO_API_VERSION;
952	coroapi.transfer = api_transfer;	1167	coroapi.transfer = api_transfer;
953
954	Newz (0, main_stack, 1, coro_stack);
955	main_stack->idle_sp = (void *)-1;
956		1168
957	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1169	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
958	}	1170	}
959		1171
960	SV *	1172	SV *
…		…
965	HV *hv;	1177	HV *hv;
966	int i;	1178	int i;
967		1179
968	Newz (0, coro, 1, struct coro);	1180	Newz (0, coro, 1, struct coro);
969	coro->args = newAV ();	1181	coro->args = newAV ();
		1182	coro->save = CORO_SAVE_ALL;
		1183	coro->flags = CF_NEW;
970		1184
971	hv = newHV ();	1185	hv = newHV ();
972	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1186	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
973	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1187	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
974		1188
975	av_push (coro->args, newSVsv (RETVAL));
976	for (i = 1; i < items; i++)	1189	for (i = 1; i < items; i++)
977	av_push (coro->args, newSVsv (ST (i)));	1190	av_push (coro->args, newSVsv (ST (i)));
978
979	coro->stack = main_stack;
980	/coro->mainstack = 0; //actual work is done inside transfer /
981	/coro->stack = 0;/
982	}	1191	}
983	OUTPUT:	1192	OUTPUT:
984	RETVAL	1193	RETVAL
985		1194
		1195	int
		1196	save (SV *coro, int new_save = -1)
		1197	CODE:
		1198	RETVAL = api_save (coro, new_save);
		1199	OUTPUT:
		1200	RETVAL
		1201
986	void	1202	void
987	transfer (prev, next, flags)	1203	_set_stacklevel (...)
988	SV *prev	1204	ALIAS:
989	SV *next	1205	Coro::State::transfer = 1
990	int flags	1206	Coro::schedule = 2
		1207	Coro::cede = 3
		1208	Coro::cede_notself = 4
991	CODE:	1209	CODE:
992	PUTBACK;
993	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
994	SPAGAIN;
995
996	int
997	prio (Coro::State coro, int newprio = 0)
998	ALIAS:
999	nice = 1
1000	CODE:
1001	{	1210	{
1002	RETVAL = coro->prio;	1211	struct transfer_args ta;
1003		1212
1004	if (items > 1)	1213	switch (ix)
1005	{	1214	{
		1215	case 0:
		1216	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1217	ta.next = 0;
		1218	break;
		1219
		1220	case 1:
1006	if (ix)	1221	if (items != 2)
1007	newprio += coro->prio;	1222	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1008		1223
1009	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1224	prepare_transfer (&ta, ST (0), ST (1));
1010	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1225	break;
1011		1226
1012	coro->prio = newprio;	1227	case 2:
		1228	prepare_schedule (&ta);
		1229	break;
		1230
		1231	case 3:
		1232	prepare_cede (&ta);
		1233	break;
		1234
		1235	case 4:
		1236	if (!prepare_cede_notself (&ta))
		1237	XSRETURN_EMPTY;
		1238
		1239	break;
1013	}	1240	}
1014	}
1015		1241
1016	void	1242	BARRIER;
1017	_clear_idle_sp (Coro::State self)	1243	TRANSFER (ta);
		1244
		1245	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1246	XSRETURN_YES;
		1247	}
		1248
		1249	bool
		1250	_destroy (SV *coro_sv)
1018	CODE:	1251	CODE:
1019	self->stack->idle_sp = 0;	1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1020		1253	OUTPUT:
1021	void	1254	RETVAL
1022	_clone_state_from (SV dst, SV src)
1023	CODE:
1024	{
1025	struct coro *coro_src = SvSTATE (src);
1026
1027	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1028
1029	++coro_src->refcnt;
1030	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1031	}
1032		1255
1033	void	1256	void
1034	_exit (code)	1257	_exit (code)
1035	int code	1258	int code
1036	PROTOTYPE: $	1259	PROTOTYPE: $
1037	CODE:	1260	CODE:
1038	_exit (code);	1261	_exit (code);
1039		1262
1040	MODULE = Coro::State PACKAGE = Coro::Cont	1263	int
		1264	cctx_count ()
		1265	CODE:
		1266	RETVAL = cctx_count;
		1267	OUTPUT:
		1268	RETVAL
1041		1269
1042	void	1270	int
1043	yield (...)	1271	cctx_idle ()
1044	PROTOTYPE: @	1272	CODE:
1045	CODE:	1273	RETVAL = cctx_idle;
1046	{	1274	OUTPUT:
1047	SV *yieldstack;	1275	RETVAL
1048	SV *sv;
1049	AV *defav = GvAV (PL_defgv);
1050	struct coro prev, next;
1051
1052	yieldstack = *hv_fetch (
1053	(HV *)SvRV (GvSV (coro_current)),
1054	"yieldstack", sizeof ("yieldstack") - 1,
1055	0
1056	);
1057
1058	/* set up @_ -- ugly */
1059	av_clear (defav);
1060	av_fill (defav, items - 1);
1061	while (items--)
1062	av_store (defav, items, SvREFCNT_inc (ST(items)));
1063
1064	sv = av_pop ((AV *)SvRV (yieldstack));
1065	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1066	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1067	SvREFCNT_dec (sv);
1068
1069	coro_state_transfer (aTHX_ prev, next, 0);
1070	}
1071		1276
1072	MODULE = Coro::State PACKAGE = Coro	1277	MODULE = Coro::State PACKAGE = Coro
1073		1278
1074	BOOT:	1279	BOOT:
1075	{	1280	{
…		…
1082	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1287	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1083	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1288	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1084	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1289	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1085	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1290	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1086		1291
1087	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1292	coro_current = get_sv ("Coro::current", FALSE);
1088	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1293	SvREADONLY_on (coro_current);
1089		1294
1090	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1295	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1091	coro_ready[i] = newAV ();	1296	coro_ready[i] = newAV ();
1092		1297
1093	{	1298	{
1094	SV *sv = perl_get_sv("Coro::API", 1);	1299	SV *sv = perl_get_sv("Coro::API", 1);
1095		1300
1096	coroapi.schedule = api_schedule;	1301	coroapi.schedule = api_schedule;
		1302	coroapi.save = api_save;
1097	coroapi.cede = api_cede;	1303	coroapi.cede = api_cede;
		1304	coroapi.cede_notself = api_cede_notself;
1098	coroapi.ready = api_ready;	1305	coroapi.ready = api_ready;
		1306	coroapi.is_ready = api_is_ready;
1099	coroapi.nready = &coro_nready;	1307	coroapi.nready = &coro_nready;
1100	coroapi.current = coro_current;	1308	coroapi.current = coro_current;
1101		1309
1102	GCoroAPI = &coroapi;	1310	GCoroAPI = &coroapi;
1103	sv_setiv (sv, (IV)&coroapi);	1311	sv_setiv (sv, (IV)&coroapi);
1104	SvREADONLY_on (sv);	1312	SvREADONLY_on (sv);
1105	}	1313	}
1106	}	1314	}
1107		1315
1108	void	1316	void
		1317	_set_current (SV *current)
		1318	PROTOTYPE: $
		1319	CODE:
		1320	SvREFCNT_dec (SvRV (coro_current));
		1321	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1322
		1323	int
		1324	prio (Coro::State coro, int newprio = 0)
		1325	ALIAS:
		1326	nice = 1
		1327	CODE:
		1328	{
		1329	RETVAL = coro->prio;
		1330
		1331	if (items > 1)
		1332	{
		1333	if (ix)
		1334	newprio = coro->prio - newprio;
		1335
		1336	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1337	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1338
		1339	coro->prio = newprio;
		1340	}
		1341	}
		1342	OUTPUT:
		1343	RETVAL
		1344
		1345	SV *
1109	ready (SV *self)	1346	ready (SV *self)
1110	PROTOTYPE: $	1347	PROTOTYPE: $
1111	CODE:	1348	CODE:
1112	api_ready (self);	1349	RETVAL = boolSV (api_ready (self));
		1350	OUTPUT:
		1351	RETVAL
		1352
		1353	SV *
		1354	is_ready (SV *self)
		1355	PROTOTYPE: $
		1356	CODE:
		1357	RETVAL = boolSV (api_is_ready (self));
		1358	OUTPUT:
		1359	RETVAL
1113		1360
1114	int	1361	int
1115	nready (...)	1362	nready (...)
1116	PROTOTYPE:	1363	PROTOTYPE:
1117	CODE:	1364	CODE:
1118	RETVAL = coro_nready;	1365	RETVAL = coro_nready;
1119	OUTPUT:	1366	OUTPUT:
1120	RETVAL	1367	RETVAL
1121		1368
1122	void
1123	schedule (...)
1124	PROTOTYPE:
1125	CODE:
1126	api_schedule ();
1127
1128	void
1129	_set_cede_self ()
1130	CODE:
1131	coro_cede_self = 1;
1132
1133	void
1134	cede (...)
1135	PROTOTYPE:
1136	CODE:
1137	api_cede ();
1138
1139	MODULE = Coro::State PACKAGE = Coro::AIO	1369	MODULE = Coro::State PACKAGE = Coro::AIO
1140		1370
1141	SV *	1371	SV *
1142	_get_state ()	1372	_get_state ()
1143	CODE:	1373	CODE:
1144	{	1374	{
1145	struct {	1375	struct io_state *data;
1146	int errorno;
1147	int laststype;
1148	int laststatval;
1149	Stat_t statcache;
1150	} data;
1151		1376
		1377	RETVAL = newSV (sizeof (struct io_state));
		1378	data = (struct io_state *)SvPVX (RETVAL);
		1379	SvCUR_set (RETVAL, sizeof (struct io_state));
		1380	SvPOK_only (RETVAL);
		1381
1152	data.errorno = errno;	1382	data->errorno = errno;
1153	data.laststype = PL_laststype;	1383	data->laststype = PL_laststype;
1154	data.laststatval = PL_laststatval;	1384	data->laststatval = PL_laststatval;
1155	data.statcache = PL_statcache;	1385	data->statcache = PL_statcache;
1156
1157	RETVAL = newSVpvn ((char *)&data, sizeof data);
1158	}	1386	}
1159	OUTPUT:	1387	OUTPUT:
1160	RETVAL	1388	RETVAL
1161		1389
1162	void	1390	void
1163	_set_state (char *data_)	1391	_set_state (char *data_)
1164	PROTOTYPE: $	1392	PROTOTYPE: $
1165	CODE:	1393	CODE:
1166	{	1394	{
1167	struct {	1395	struct io_state data = (void )data_;
1168	int errorno;
1169	int laststype;
1170	int laststatval;
1171	Stat_t statcache;
1172	} data = (void )data_;
1173		1396
1174	errno = data->errorno;	1397	errno = data->errorno;
1175	PL_laststype = data->laststype;	1398	PL_laststype = data->laststype;
1176	PL_laststatval = data->laststatval;	1399	PL_laststatval = data->laststatval;
1177	PL_statcache = data->statcache;	1400	PL_statcache = data->statcache;
1178	}	1401	}
		1402

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Comparing Coro/Coro/State.xs (file contents): Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC vs. Revision 1.143 by root, Wed Feb 28 11:43:03 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC vs.
Revision 1.143 by root, Wed Feb 28 11:43:03 2007 UTC