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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	/* 5.8.7 */
44	#ifndef SvRV_set
45	# define SvRV_set(s,v) SvRV(s) = (v)
46	#endif
47
48	#include <stdio.h>	11	#include <stdio.h>
49	#include <errno.h>	12	#include <errno.h>
50	#include <assert.h>	13	#include <assert.h>
51
52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
53	# undef STACKGUARD
54	#endif
55
56	#ifndef STACKGUARD
57	# define STACKGUARD 0
58	#endif
59		14
60	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
61	# include <unistd.h>	16	# include <unistd.h>
62	# include <sys/mman.h>	17	# include <sys/mman.h>
63	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
78	#else	33	#else
79	# define PAGESIZE 0	34	# define PAGESIZE 0
80	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
81	#endif	36	#endif
82		37
83	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
84	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
85	* and should be unique. */	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)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
86	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
87	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
88		97
89	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
90		99
91	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
93	#else	103	#else
94	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
95	#endif	106	#endif
96		107
97	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
98		109
99	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
105	#else	116	#else
106	# define LOCK (void)0	117	# define LOCK (void)0
107	# define UNLOCK (void)0	118	# define UNLOCK (void)0
108	#endif	119	#endif
109		120
		121	/* helper storage struct for Coro::AIO */
110	struct io_state	122	struct io_state
111	{	123	{
112	int errorno;	124	int errorno;
113	I32 laststype;	125	I32 laststype;
114	int laststatval;	126	int laststatval;
115	Stat_t statcache;	127	Stat_t statcache;
116	};	128	};
117		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
118	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
119	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
120	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
121	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
122		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
123	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
124	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		152	};
125		153
126	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
127	typedef struct coro_cctx {	155	typedef struct coro_cctx {
128	struct coro_cctx *next;	156	struct coro_cctx *next;
129		157
130	/* the stack */	158	/* the stack */
131	void *sptr;	159	void *sptr;
132	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
133		161
134	/* cpu state */	162	/* cpu state */
135	void idle_sp; / sp of top-level transfer/schedule/cede call */	163	void idle_sp; / sp of top-level transfer/schedule/cede call */
		164	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
136	JMPENV *top_env;	165	JMPENV *top_env;
137	coro_context cctx;	166	coro_context cctx;
138		167
139	int inuse;
140
141	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
142	int valgrind_id;	169	int valgrind_id;
143	#endif	170	#endif
		171	unsigned char flags;
144	} coro_cctx;	172	} coro_cctx;
145		173
146	enum {	174	enum {
147	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
148	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
149	CF_NEW = 0x0004, /* ahs never been switched to */	177	CF_NEW = 0x0004, /* has never been switched to */
		178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
150	};	179	};
151		180
152	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
153	struct coro {	182	struct coro {
154	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
…		…
162		191
163	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
164	AV defav; / @_ */	193	AV defav; / @_ */
165	SV defsv; / $_ */	194	SV defsv; / $_ */
166	SV errsv; / $@ */	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
167	SV irssv; / $/ */	197	SV irssv; / $/ */
168	SV irssv_sv; / real $/ cache */	198	SV irssv_sv; / real $/ cache */
169		199
170	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
171	# include "state.h"	201	# include "state.h"
172	#undef VAR	202	#undef VAR
173		203
174	/* coro process data */	204	/* coro process data */
175	int prio;	205	int prio;
		206
		207	/* linked list */
		208	struct coro next, prev;
		209	HV hv; / the perl hash associated with this coro, if any */
176	};	210	};
177		211
178	typedef struct coro *Coro__State;	212	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	213	typedef struct coro *Coro__State_or_hashref;
180		214
		215	/ Coro ******************************************************************/
		216
		217	#define PRIO_MAX 3
		218	#define PRIO_HIGH 1
		219	#define PRIO_NORMAL 0
		220	#define PRIO_LOW -1
		221	#define PRIO_IDLE -3
		222	#define PRIO_MIN -4
		223
		224	/* for Coro.pm */
		225	static SV *coro_current;
		226	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		227	static int coro_nready;
		228	static struct coro *coro_first;
		229
		230	/ lowlevel stuff ********************************************************/
		231
181	static AV *	232	static AV *
182	coro_clone_padlist (CV *cv)	233	coro_clone_padlist (pTHX_ CV *cv)
183	{	234	{
184	AV *padlist = CvPADLIST (cv);	235	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	236	AV newpadlist, newpad;
186		237
187	newpadlist = newAV ();	238	newpadlist = newAV ();
…		…
199		250
200	return newpadlist;	251	return newpadlist;
201	}	252	}
202		253
203	static void	254	static void
204	free_padlist (AV *padlist)	255	free_padlist (pTHX_ AV *padlist)
205	{	256	{
206	/* may be during global destruction */	257	/* may be during global destruction */
207	if (SvREFCNT (padlist))	258	if (SvREFCNT (padlist))
208	{	259	{
209	I32 i = AvFILLp (padlist);	260	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	281	AV *padlist;
231	AV av = (AV )mg->mg_obj;	282	AV av = (AV )mg->mg_obj;
232		283
233	/* casting is fun. */	284	/* casting is fun. */
234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	285	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
235	free_padlist (padlist);	286	free_padlist (aTHX_ padlist);
236		287
237	SvREFCNT_dec (av);	288	SvREFCNT_dec (av);
238		289
239	return 0;	290	return 0;
240	}	291	}
…		…
248	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	299	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
249	? SvMAGIC (cv) \	300	? SvMAGIC (cv) \
250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
251	: 0	302	: 0
252		303
		304	static struct coro *
		305	SvSTATE_ (pTHX_ SV *coro)
		306	{
		307	HV *stash;
		308	MAGIC *mg;
		309
		310	if (SvROK (coro))
		311	coro = SvRV (coro);
		312
		313	stash = SvSTASH (coro);
		314	if (stash != coro_stash && stash != coro_state_stash)
		315	{
		316	/* very slow, but rare, check */
		317	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		318	croak ("Coro::State object required");
		319	}
		320
		321	mg = CORO_MAGIC (coro);
		322	return (struct coro *)mg->mg_ptr;
		323	}
		324
		325	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		326
253	/* the next two functions merely cache the padlists */	327	/* the next two functions merely cache the padlists */
254	static void	328	static void
255	get_padlist (CV *cv)	329	get_padlist (pTHX_ CV *cv)
256	{	330	{
257	MAGIC *mg = CORO_MAGIC (cv);	331	MAGIC *mg = CORO_MAGIC (cv);
258	AV *av;	332	AV *av;
259		333
260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	334	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	335	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262	else	336	else
263	{	337	{
264	#if 0	338	#if CORO_PREFER_PERL_FUNCTIONS
265	/* this is probably cleaner, but also slower? */	339	/* this is probably cleaner, but also slower? */
266	CV *cp = Perl_cv_clone (cv);	340	CV *cp = Perl_cv_clone (cv);
267	CvPADLIST (cv) = CvPADLIST (cp);	341	CvPADLIST (cv) = CvPADLIST (cp);
268	CvPADLIST (cp) = 0;	342	CvPADLIST (cp) = 0;
269	SvREFCNT_dec (cp);	343	SvREFCNT_dec (cp);
270	#else	344	#else
271	CvPADLIST (cv) = coro_clone_padlist (cv);	345	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272	#endif	346	#endif
273	}	347	}
274	}	348	}
275		349
276	static void	350	static void
277	put_padlist (CV *cv)	351	put_padlist (pTHX_ CV *cv)
278	{	352	{
279	MAGIC *mg = CORO_MAGIC (cv);	353	MAGIC *mg = CORO_MAGIC (cv);
280	AV *av;	354	AV *av;
281		355
282	if (!mg)	356	if (!mg)
…		…
293	av_extend (av, AvMAX (av) + 1);	367	av_extend (av, AvMAX (av) + 1);
294		368
295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	369	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296	}	370	}
297		371
		372	/ load & save, init *****************************************************/
		373
298	#define SB do {	374	#define SB do {
299	#define SE } while (0)	375	#define SE } while (0)
300		376
301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	377	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
302		378
303	static void	379	static void
304	load_perl (Coro__State c)	380	load_perl (pTHX_ Coro__State c)
305	{	381	{
306	#define VAR(name,type) PL_ ## name = c->name;	382	#define VAR(name,type) PL_ ## name = c->name;
307	# include "state.h"	383	# include "state.h"
308	#undef VAR	384	#undef VAR
309		385
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	386	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	387	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	388	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		389	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		390
313	if (c->irssv)	391	if (c->irssv)
314	{	392	{
315	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	393	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		394	{
316	SvREFCNT_dec (c->irssv);	395	SvREFCNT_dec (c->irssv);
		396	c->irssv = 0;
		397	}
317	else	398	else
318	{	399	{
319	REPLACE_SV (PL_rs, c->irssv);	400	REPLACE_SV (PL_rs, c->irssv);
320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	401	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321	sv_setsv (c->irssv_sv, PL_rs);	402	sv_setsv (c->irssv_sv, PL_rs);
…		…
327	CV *cv;	408	CV *cv;
328		409
329	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
330	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
331	{	412	{
332	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvDEPTH (cv) = PTR2IV (POPs);	414	CvDEPTH (cv) = PTR2IV (POPs);
334	CvPADLIST (cv) = (AV *)POPs;	415	CvPADLIST (cv) = (AV *)POPs;
335	}	416	}
336		417
337	PUTBACK;	418	PUTBACK;
338	}	419	}
339	}	420	}
340		421
341	static void	422	static void
342	save_perl (Coro__State c)	423	save_perl (pTHX_ Coro__State c)
343	{	424	{
344	{	425	{
345	dSP;	426	dSP;
346	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
347	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
350	/*	431	/*
351	* the worst thing you can imagine happens first - we have to save	432	* the worst thing you can imagine happens first - we have to save
352	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
353	*/	434	*/
354		435
355	EXTEND (SP, 3 + 1);
356	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
357	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
358	for (;;)	438	for (;;)
359	{	439	{
360	while (cxix >= 0)	440	while (cxix >= 0)
361	{	441	{
362	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
363		443
364	if (CxTYPE (cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
365	{	445	{
366	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
367		447
368	if (CvDEPTH (cv))	448	if (CvDEPTH (cv))
369	{	449	{
…		…
371	PUSHs ((SV *)CvPADLIST (cv));	451	PUSHs ((SV *)CvPADLIST (cv));
372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
374		454
375	CvDEPTH (cv) = 0;	455	CvDEPTH (cv) = 0;
376	get_padlist (cv);	456	get_padlist (aTHX_ cv);
377	}	457	}
378	}	458	}
379	}	459	}
380		460
381	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
382	break;	462	break;
383		463
384	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
385	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
386	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
387	}	467	}
388		468
389	PUTBACK;	469	PUTBACK;
390	}	470	}
391		471
392	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
393	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
394	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		475	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
395	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	476	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
396		477
397	#define VAR(name,type)c->name = PL_ ## name;	478	#define VAR(name,type)c->name = PL_ ## name;
398	# include "state.h"	479	# include "state.h"
399	#undef VAR	480	#undef VAR
…		…
403	* allocate various perl stacks. This is an exact copy	484	* allocate various perl stacks. This is an exact copy
404	* of perl.c:init_stacks, except that it uses less memory	485	* of perl.c:init_stacks, except that it uses less memory
405	* on the (sometimes correct) assumption that coroutines do	486	* on the (sometimes correct) assumption that coroutines do
406	* not usually need a lot of stackspace.	487	* not usually need a lot of stackspace.
407	*/	488	*/
408	#if USE_PERL_INIT_STACKS	489	#if CORO_PREFER_PERL_FUNCTIONS
409	# define coro_init_stacks init_stacks	490	# define coro_init_stacks init_stacks
410	#else	491	#else
411
412	static void	492	static void
413	coro_init_stacks ()	493	coro_init_stacks (pTHX)
414	{	494	{
415	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	495	PL_curstackinfo = new_stackinfo(64, 6);
416	PL_curstackinfo->si_type = PERLSI_MAIN;	496	PL_curstackinfo->si_type = PERLSI_MAIN;
417	PL_curstack = PL_curstackinfo->si_stack;	497	PL_curstack = PL_curstackinfo->si_stack;
418	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	498	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
419		499
420	PL_stack_base = AvARRAY(PL_curstack);	500	PL_stack_base = AvARRAY(PL_curstack);
421	PL_stack_sp = PL_stack_base;	501	PL_stack_sp = PL_stack_base;
422	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	502	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
423		503
424	New(50,PL_tmps_stack,128,SV*);	504	New(50,PL_tmps_stack,64,SV*);
425	PL_tmps_floor = -1;	505	PL_tmps_floor = -1;
426	PL_tmps_ix = -1;	506	PL_tmps_ix = -1;
427	PL_tmps_max = 128;	507	PL_tmps_max = 64;
428		508
429	New(54,PL_markstack,32,I32);	509	New(54,PL_markstack,16,I32);
430	PL_markstack_ptr = PL_markstack;	510	PL_markstack_ptr = PL_markstack;
431	PL_markstack_max = PL_markstack + 32;	511	PL_markstack_max = PL_markstack + 16;
432		512
433	#ifdef SET_MARK_OFFSET	513	#ifdef SET_MARK_OFFSET
434	SET_MARK_OFFSET;	514	SET_MARK_OFFSET;
435	#endif	515	#endif
436		516
437	New(54,PL_scopestack,32,I32);	517	New(54,PL_scopestack,16,I32);
438	PL_scopestack_ix = 0;	518	PL_scopestack_ix = 0;
439	PL_scopestack_max = 32;	519	PL_scopestack_max = 16;
440		520
441	New(54,PL_savestack,64,ANY);	521	New(54,PL_savestack,64,ANY);
442	PL_savestack_ix = 0;	522	PL_savestack_ix = 0;
443	PL_savestack_max = 64;	523	PL_savestack_max = 64;
444		524
445	#if !PERL_VERSION_ATLEAST (5,9,0)	525	#if !PERL_VERSION_ATLEAST (5,9,0)
446	New(54,PL_retstack,16,OP*);	526	New(54,PL_retstack,4,OP*);
447	PL_retstack_ix = 0;	527	PL_retstack_ix = 0;
448	PL_retstack_max = 16;	528	PL_retstack_max = 4;
449	#endif	529	#endif
450	}	530	}
		531	#endif
451		532
452	/*	533	/*
453	* destroy the stacks, the callchain etc...	534	* destroy the stacks, the callchain etc...
454	*/	535	*/
455	static void	536	static void
456	coro_destroy_stacks ()	537	coro_destroy_stacks (pTHX)
457	{	538	{
458	if (!IN_DESTRUCT)	539	if (!IN_DESTRUCT)
459	{	540	{
460	/* restore all saved variables and stuff */	541	/* restore all saved variables and stuff */
461	LEAVE_SCOPE (0);	542	LEAVE_SCOPE (0);
…		…
463		544
464	/* free all temporaries */	545	/* free all temporaries */
465	FREETMPS;	546	FREETMPS;
466	assert (PL_tmps_ix == -1);	547	assert (PL_tmps_ix == -1);
467		548
		549	/* unwind all extra stacks */
468	POPSTACK_TO (PL_mainstack);	550	POPSTACK_TO (PL_mainstack);
		551
		552	/* unwind main stack */
		553	dounwind (-1);
469	}	554	}
470		555
471	while (PL_curstackinfo->si_next)	556	while (PL_curstackinfo->si_next)
472	PL_curstackinfo = PL_curstackinfo->si_next;	557	PL_curstackinfo = PL_curstackinfo->si_next;
473		558
…		…
489	Safefree (PL_savestack);	574	Safefree (PL_savestack);
490	#if !PERL_VERSION_ATLEAST (5,9,0)	575	#if !PERL_VERSION_ATLEAST (5,9,0)
491	Safefree (PL_retstack);	576	Safefree (PL_retstack);
492	#endif	577	#endif
493	}	578	}
		579
		580	static size_t
		581	coro_rss (struct coro *coro)
		582	{
		583	size_t rss = sizeof (coro);
		584
		585	if (coro->mainstack)
		586	{
		587	if (coro->flags & CF_RUNNING)
		588	{
		589	#define VAR(name,type)coro->name = PL_ ## name;
		590	# include "state.h"
		591	#undef VAR
		592	}
		593
		594	rss += sizeof (coro->curstackinfo);
		595	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		596	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		597	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		598	rss += coro->tmps_max * sizeof (SV *);
		599	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		600	rss += coro->scopestack_max * sizeof (I32);
		601	rss += coro->savestack_max * sizeof (ANY);
		602
		603	#if !PERL_VERSION_ATLEAST (5,9,0)
		604	rss += coro->retstack_max * sizeof (OP *);
494	#endif	605	#endif
		606	}
		607
		608	return rss;
		609	}
		610
		611	/ coroutine stack handling **********************************************/
495		612
496	static void	613	static void
497	setup_coro (struct coro *coro)	614	setup_coro (pTHX_ struct coro *coro)
498	{	615	{
499	/*	616	/*
500	* emulate part of the perl startup here.	617	* emulate part of the perl startup here.
501	*/	618	*/
502
503	coro_init_stacks ();	619	coro_init_stacks (aTHX);
504		620
		621	PL_runops = RUNOPS_DEFAULT;
505	PL_curcop = &PL_compiling;	622	PL_curcop = &PL_compiling;
506	PL_in_eval = EVAL_NULL;	623	PL_in_eval = EVAL_NULL;
		624	PL_comppad = 0;
507	PL_curpm = 0;	625	PL_curpm = 0;
508	PL_localizing = 0;	626	PL_localizing = 0;
509	PL_dirty = 0;	627	PL_dirty = 0;
510	PL_restartop = 0;	628	PL_restartop = 0;
511		629
…		…
519	Zero (&myop, 1, LOGOP);	637	Zero (&myop, 1, LOGOP);
520	myop.op_next = Nullop;	638	myop.op_next = Nullop;
521	myop.op_flags = OPf_WANT_VOID;	639	myop.op_flags = OPf_WANT_VOID;
522		640
523	PUSHMARK (SP);	641	PUSHMARK (SP);
524	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	642	XPUSHs (av_shift (GvAV (PL_defgv)));
525	PUTBACK;	643	PUTBACK;
526	PL_op = (OP *)&myop;	644	PL_op = (OP *)&myop;
527	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	645	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
528	SPAGAIN;	646	SPAGAIN;
529	}	647	}
530		648
531	ENTER; /* necessary e.g. for dounwind */	649	ENTER; /* necessary e.g. for dounwind */
532	}	650	}
533		651
534	static void	652	static void
535	free_coro_mortal ()	653	free_coro_mortal (pTHX)
536	{	654	{
537	if (coro_mortal)	655	if (coro_mortal)
538	{	656	{
539	SvREFCNT_dec (coro_mortal);	657	SvREFCNT_dec (coro_mortal);
540	coro_mortal = 0;	658	coro_mortal = 0;
541	}	659	}
542	}	660	}
543		661
		662	static int
		663	runops_trace (pTHX)
		664	{
		665	COP *oldcop = 0;
		666	int oldcxix = -2;
		667	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		668	coro_cctx *cctx = coro->cctx;
		669
		670	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		671	{
		672	PERL_ASYNC_CHECK ();
		673
		674	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		675	{
		676	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		677	SV bot, top;
		678	AV av = newAV (); / return values */
		679	SV **cb;
		680	runops_proc_t old_runops = PL_runops;
		681	dSP;
		682	ENTER;
		683	SAVETMPS;
		684	EXTEND (SP, 3);
		685	PL_runops = RUNOPS_DEFAULT;
		686
		687	GV *gv = CvGV (cx->blk_sub.cv);
		688	SV *fullname = sv_2mortal (newSV (0));
		689	if (isGV (gv))
		690	gv_efullname3 (fullname, gv, 0);
		691
		692	bot = PL_stack_base + cx->blk_oldsp + 1;
		693	top = cx->blk_gimme == G_ARRAY ? SP + 1
		694	: cx->blk_gimme == G_SCALAR ? bot + 1
		695	: bot;
		696
		697	while (bot < top)
		698	av_push (av, SvREFCNT_inc (*bot++));
		699
		700	PUSHMARK (SP);
		701	PUSHs (&PL_sv_no);
		702	PUSHs (fullname);
		703	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		704	PUTBACK;
		705	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		706	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		707	SPAGAIN;
		708
		709	FREETMPS;
		710	LEAVE;
		711	PL_runops = old_runops;
		712	}
		713
		714	if (oldcop != PL_curcop)
		715	{
		716	oldcop = PL_curcop;
		717
		718	if (PL_curcop != &PL_compiling)
		719	{
		720	SV **cb;
		721	runops_proc_t old_runops = PL_runops;
		722	dSP;
		723	ENTER;
		724	SAVETMPS;
		725	EXTEND (SP, 3);
		726	PL_runops = RUNOPS_DEFAULT;
		727
		728	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		729	{
		730	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		731
		732	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		733	{
		734	GV *gv = CvGV (cx->blk_sub.cv);
		735	SV *fullname = sv_2mortal (newSV (0));
		736	if (isGV (gv))
		737	gv_efullname3 (fullname, gv, 0);
		738
		739	PUSHMARK (SP);
		740	PUSHs (&PL_sv_yes);
		741	PUSHs (fullname);
		742	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		743	PUTBACK;
		744	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		745	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		746	SPAGAIN;
		747	}
		748
		749	oldcxix = cxstack_ix;
		750	}
		751
		752	if (cctx->flags & CC_TRACE_LINE)
		753	{
		754	PUSHMARK (SP);
		755	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		756	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		757	PUTBACK;
		758	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		759	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		760	SPAGAIN;
		761	}
		762
		763	FREETMPS;
		764	LEAVE;
		765	PL_runops = old_runops;
		766	}
		767	}
		768	}
		769
		770	TAINT_NOT;
		771	return 0;
		772	}
		773
544	/* inject a fake call to Coro::State::_cctx_init into the execution */	774	/* inject a fake call to Coro::State::_cctx_init into the execution */
		775	/* _cctx_init should be careful, as it could be called at almost any time */
		776	/* during execution of a perl program */
545	static void NOINLINE	777	static void NOINLINE
546	prepare_cctx (coro_cctx *cctx)	778	prepare_cctx (pTHX_ coro_cctx *cctx)
547	{	779	{
548	dSP;	780	dSP;
549	LOGOP myop;	781	LOGOP myop;
		782
		783	PL_top_env = &PL_start_env;
		784
		785	if (cctx->flags & CC_TRACE)
		786	PL_runops = runops_trace;
550		787
551	Zero (&myop, 1, LOGOP);	788	Zero (&myop, 1, LOGOP);
552	myop.op_next = PL_op;	789	myop.op_next = PL_op;
553	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	790	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
554		791
…		…
560	PL_op = (OP *)&myop;	797	PL_op = (OP *)&myop;
561	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	798	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
562	SPAGAIN;	799	SPAGAIN;
563	}	800	}
564		801
		802	/*
		803	* this is a _very_ stripped down perl interpreter ;)
		804	*/
565	static void	805	static void
566	coro_run (void *arg)	806	coro_run (void *arg)
567	{	807	{
		808	dTHX;
		809
568	/* coro_run is the alternative tail of transfer(), so unlock here. */	810	/* coro_run is the alternative tail of transfer(), so unlock here. */
569	UNLOCK;	811	UNLOCK;
570		812
571	/*	813	/* we now skip the entersub that lead to transfer() */
572	* this is a _very_ stripped down perl interpreter ;)	814	PL_op = PL_op->op_next;
573	*/
574	PL_top_env = &PL_start_env;
575		815
576	/* inject call to cctx_init */	816	/* inject a fake subroutine call to cctx_init */
577	prepare_cctx ((coro_cctx *)arg);	817	prepare_cctx (aTHX_ (coro_cctx *)arg);
578		818
579	/* somebody will hit me for both perl_run and PL_restartop */	819	/* somebody or something will hit me for both perl_run and PL_restartop */
580	PL_restartop = PL_op;	820	PL_restartop = PL_op;
581	perl_run (PL_curinterp);	821	perl_run (PL_curinterp);
582		822
583	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	823	/*
584	abort ();	824	* If perl-run returns we assume exit() was being called or the coro
		825	* fell off the end, which seems to be the only valid (non-bug)
		826	* reason for perl_run to return. We try to exit by jumping to the
		827	* bootstrap-time "top" top_env, as we cannot restore the "main"
		828	* coroutine as Coro has no such concept
		829	*/
		830	PL_top_env = main_top_env;
		831	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
585	}	832	}
586		833
587	static coro_cctx *	834	static coro_cctx *
588	cctx_new ()	835	cctx_new ()
589	{	836	{
590	coro_cctx *cctx;	837	coro_cctx *cctx;
		838	void *stack_start;
		839	size_t stack_size;
591		840
592	++cctx_count;	841	++cctx_count;
593		842
594	Newz (0, cctx, 1, coro_cctx);	843	Newz (0, cctx, 1, coro_cctx);
595		844
596	#if HAVE_MMAP	845	#if HAVE_MMAP
597		846
598	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	847	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
599	/* mmap supposedly does allocate-on-write for us */	848	/* mmap supposedly does allocate-on-write for us */
600	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	849	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
601		850
602	if (cctx->sptr == (void *)-1)	851	if (cctx->sptr != (void *)-1)
603	{
604	perror ("FATAL: unable to mmap stack for coroutine");
605	_exit (EXIT_FAILURE);
606	}	852	{
607
608	# if STACKGUARD	853	# if CORO_STACKGUARD
609	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	854	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
610	# endif	855	# endif
		856	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		857	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		858	cctx->flags \|= CC_MAPPED;
		859	}
		860	else
		861	#endif
		862	{
		863	cctx->ssize = coro_stacksize * (long)sizeof (long);
		864	New (0, cctx->sptr, coro_stacksize, long);
611		865
612	#else
613
614	cctx->ssize = STACKSIZE * (long)sizeof (long);
615	New (0, cctx->sptr, STACKSIZE, long);
616
617	if (!cctx->sptr)	866	if (!cctx->sptr)
618	{	867	{
619	perror ("FATAL: unable to malloc stack for coroutine");	868	perror ("FATAL: unable to allocate stack for coroutine");
620	_exit (EXIT_FAILURE);	869	_exit (EXIT_FAILURE);
621	}	870	}
622		871
623	#endif	872	stack_start = cctx->sptr;
		873	stack_size = cctx->ssize;
		874	}
624		875
625	#if USE_VALGRIND	876	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
626	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
627	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
628	cctx->ssize + (char *)cctx->sptr
629	);
630	#endif
631
632	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	877	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
633		878
634	return cctx;	879	return cctx;
635	}	880	}
636		881
637	static void	882	static void
…		…
640	if (!cctx)	885	if (!cctx)
641	return;	886	return;
642		887
643	--cctx_count;	888	--cctx_count;
644		889
645	#if USE_VALGRIND	890	#if CORO_USE_VALGRIND
646	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	891	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
647	#endif	892	#endif
648		893
649	#if HAVE_MMAP	894	#if HAVE_MMAP
		895	if (cctx->flags & CC_MAPPED)
650	munmap (cctx->sptr, cctx->ssize);	896	munmap (cctx->sptr, cctx->ssize);
651	#else	897	else
		898	#endif
652	Safefree (cctx->sptr);	899	Safefree (cctx->sptr);
653	#endif
654		900
655	Safefree (cctx);	901	Safefree (cctx);
656	}	902	}
657		903
658	static coro_cctx *	904	static coro_cctx *
659	cctx_get ()	905	cctx_get (pTHX)
660	{	906	{
661	coro_cctx *cctx;
662
663	if (cctx_first)	907	while (cctx_first)
664	{	908	{
665	cctx = cctx_first;	909	coro_cctx *cctx = cctx_first;
666	cctx_first = cctx->next;	910	cctx_first = cctx->next;
667	--cctx_idle;	911	--cctx_idle;
668	}	912
669	else	913	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
670	{	914	return cctx;
671	cctx = cctx_new ();	915
672	PL_op = PL_op->op_next;	916	cctx_destroy (cctx);
673	}	917	}
674		918
675	return cctx;	919	return cctx_new ();
676	}	920	}
677		921
678	static void	922	static void
679	cctx_put (coro_cctx *cctx)	923	cctx_put (coro_cctx *cctx)
680	{	924	{
…		…
683	{	927	{
684	coro_cctx *first = cctx_first;	928	coro_cctx *first = cctx_first;
685	cctx_first = first->next;	929	cctx_first = first->next;
686	--cctx_idle;	930	--cctx_idle;
687		931
688	assert (!first->inuse);
689	cctx_destroy (first);	932	cctx_destroy (first);
690	}	933	}
691		934
692	++cctx_idle;	935	++cctx_idle;
693	cctx->next = cctx_first;	936	cctx->next = cctx_first;
694	cctx_first = cctx;	937	cctx_first = cctx;
695	}	938	}
696		939
697	/* never call directly, always through the coro_state_transfer global variable */	940	/ coroutine switching ***************************************************/
		941
698	static void NOINLINE	942	static void NOINLINE
		943	transfer_check (pTHX_ struct coro prev, struct coro next)
		944	{
		945	if (prev != next)
		946	{
		947	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		948	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		949
		950	if (next->flags & CF_RUNNING)
		951	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		952
		953	if (next->flags & CF_DESTROYED)
		954	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		955
		956	if (PL_lex_state != LEX_NOTPARSING)
		957	croak ("Coro::State::transfer called while parsing, but this is not supported");
		958	}
		959	}
		960
		961	/* always use the TRANSFER macro */
		962	static void NOINLINE
699	transfer (struct coro prev, struct coro next)	963	transfer (pTHX_ struct coro prev, struct coro next)
700	{	964	{
701	dSTACKLEVEL;	965	dSTACKLEVEL;
702		966
703	/* sometimes transfer is only called to set idle_sp */	967	/* sometimes transfer is only called to set idle_sp */
704	if (!next)	968	if (!next)
705	{	969	{
706	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	970	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
707	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	971	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
708	}	972	}
709	else if (prev != next)	973	else if (prev != next)
710	{	974	{
711	coro_cctx *prev__cctx;	975	coro_cctx *prev__cctx;
712		976
713	if (prev->flags & CF_NEW)	977	if (prev->flags & CF_NEW)
714	{	978	{
715	/* create a new empty context */	979	/* create a new empty context */
716	Newz (0, prev->cctx, 1, coro_cctx);	980	Newz (0, prev->cctx, 1, coro_cctx);
717	prev->cctx->inuse = 1;
718	prev->flags &= ~CF_NEW;	981	prev->flags &= ~CF_NEW;
719	prev->flags \|= CF_RUNNING;	982	prev->flags \|= CF_RUNNING;
720	}	983	}
721
722	/TODO: must not croak here /
723	if (!prev->flags & CF_RUNNING)
724	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
725
726	if (next->flags & CF_RUNNING)
727	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
728		984
729	prev->flags &= ~CF_RUNNING;	985	prev->flags &= ~CF_RUNNING;
730	next->flags \|= CF_RUNNING;	986	next->flags \|= CF_RUNNING;
731		987
732	LOCK;	988	LOCK;
…		…
734	if (next->flags & CF_NEW)	990	if (next->flags & CF_NEW)
735	{	991	{
736	/* need to start coroutine */	992	/* need to start coroutine */
737	next->flags &= ~CF_NEW;	993	next->flags &= ~CF_NEW;
738	/* first get rid of the old state */	994	/* first get rid of the old state */
739	save_perl (prev);	995	save_perl (aTHX_ prev);
740	/* setup coroutine call */	996	/* setup coroutine call */
741	setup_coro (next);	997	setup_coro (aTHX_ next);
742	/* need a new stack */
743	assert (!next->cctx);
744	}	998	}
745	else	999	else
746	{	1000	{
747	/* coroutine already started */	1001	/* coroutine already started */
748	save_perl (prev);	1002	save_perl (aTHX_ prev);
749	load_perl (next);	1003	load_perl (aTHX_ next);
750	}	1004	}
751		1005
752	prev__cctx = prev->cctx;	1006	prev__cctx = prev->cctx;
753		1007
754	/* possibly "free" the cctx */	1008	/* possibly "free" the cctx */
755	if (prev__cctx->idle_sp == STACKLEVEL)	1009	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
756	{	1010	{
757	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1011	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
758	assert (PL_top_env == prev__cctx->top_env);	1012	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
759		1013
760	prev->cctx = 0;	1014	prev->cctx = 0;
761		1015
762	cctx_put (prev__cctx);	1016	cctx_put (prev__cctx);
763	prev__cctx->inuse = 0;
764	}	1017	}
765		1018
766	if (!next->cctx)	1019	if (!next->cctx)
767	{
768	next->cctx = cctx_get ();	1020	next->cctx = cctx_get (aTHX);
769	assert (!next->cctx->inuse);
770	next->cctx->inuse = 1;
771	}
772		1021
773	if (prev__cctx != next->cctx)	1022	if (prev__cctx != next->cctx)
774	{	1023	{
775	prev__cctx->top_env = PL_top_env;	1024	prev__cctx->top_env = PL_top_env;
776	PL_top_env = next->cctx->top_env;	1025	PL_top_env = next->cctx->top_env;
777	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1026	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
778	}	1027	}
779		1028
780	free_coro_mortal ();	1029	free_coro_mortal (aTHX);
781
782	UNLOCK;	1030	UNLOCK;
783	}	1031	}
784	}	1032	}
785		1033
786	struct transfer_args	1034	struct transfer_args
787	{	1035	{
788	struct coro prev, next;	1036	struct coro prev, next;
789	};	1037	};
790		1038
791	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1039	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1040	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
792		1041
		1042	/ high level stuff ******************************************************/
		1043
793	static void	1044	static int
794	coro_state_destroy (struct coro *coro)	1045	coro_state_destroy (pTHX_ struct coro *coro)
795	{	1046	{
796	if (coro->refcnt--)	1047	if (coro->flags & CF_DESTROYED)
797	return;	1048	return 0;
		1049
		1050	coro->flags \|= CF_DESTROYED;
		1051
		1052	if (coro->flags & CF_READY)
		1053	{
		1054	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1055	/* alternative: look through all ready queues and remove the coro */
		1056	LOCK;
		1057	--coro_nready;
		1058	UNLOCK;
		1059	}
		1060	else
		1061	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
798		1062
799	if (coro->mainstack && coro->mainstack != main_mainstack)	1063	if (coro->mainstack && coro->mainstack != main_mainstack)
800	{	1064	{
801	struct coro temp;	1065	struct coro temp;
		1066
		1067	assert (!(coro->flags & CF_RUNNING));
		1068
802	Zero (&temp, 1, struct coro);	1069	Zero (&temp, 1, struct coro);
803	temp.save = CORO_SAVE_ALL;	1070	temp.save = CORO_SAVE_ALL;
804		1071
805	if (coro->flags & CF_RUNNING)	1072	if (coro->flags & CF_RUNNING)
806	croak ("FATAL: tried to destroy currently running coroutine");	1073	croak ("FATAL: tried to destroy currently running coroutine");
807		1074
808	save_perl (&temp);	1075	save_perl (aTHX_ &temp);
809	load_perl (coro);	1076	load_perl (aTHX_ coro);
810		1077
811	coro_destroy_stacks ();	1078	coro_destroy_stacks (aTHX);
812		1079
813	load_perl (&temp); /* this will get rid of defsv etc.. */	1080	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
814		1081
815	coro->mainstack = 0;	1082	coro->mainstack = 0;
816	}	1083	}
817		1084
818	cctx_destroy (coro->cctx);	1085	cctx_destroy (coro->cctx);
819	SvREFCNT_dec (coro->args);	1086	SvREFCNT_dec (coro->args);
820	Safefree (coro);	1087
		1088	if (coro->next) coro->next->prev = coro->prev;
		1089	if (coro->prev) coro->prev->next = coro->next;
		1090	if (coro == coro_first) coro_first = coro->next;
		1091
		1092	return 1;
821	}	1093	}
822		1094
823	static int	1095	static int
824	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1096	coro_state_free (pTHX_ SV sv, MAGIC mg)
825	{	1097	{
826	struct coro coro = (struct coro )mg->mg_ptr;	1098	struct coro coro = (struct coro )mg->mg_ptr;
827	mg->mg_ptr = 0;	1099	mg->mg_ptr = 0;
828		1100
		1101	coro->hv = 0;
		1102
		1103	if (--coro->refcnt < 0)
		1104	{
829	coro_state_destroy (coro);	1105	coro_state_destroy (aTHX_ coro);
		1106	Safefree (coro);
		1107	}
830		1108
831	return 0;	1109	return 0;
832	}	1110	}
833		1111
834	static int	1112	static int
…		…
841	return 0;	1119	return 0;
842	}	1120	}
843		1121
844	static MGVTBL coro_state_vtbl = {	1122	static MGVTBL coro_state_vtbl = {
845	0, 0, 0, 0,	1123	0, 0, 0, 0,
846	coro_state_clear,	1124	coro_state_free,
847	0,	1125	0,
848	#ifdef MGf_DUP	1126	#ifdef MGf_DUP
849	coro_state_dup,	1127	coro_state_dup,
850	#else	1128	#else
851	# define MGf_DUP 0	1129	# define MGf_DUP 0
852	#endif	1130	#endif
853	};	1131	};
854		1132
855	static struct coro *
856	SvSTATE (SV *coro)
857	{
858	HV *stash;
859	MAGIC *mg;
860
861	if (SvROK (coro))
862	coro = SvRV (coro);
863
864	stash = SvSTASH (coro);
865	if (stash != coro_stash && stash != coro_state_stash)
866	{
867	/* very slow, but rare, check */
868	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
869	croak ("Coro::State object required");
870	}
871
872	mg = SvMAGIC (coro);
873	assert (mg->mg_type == PERL_MAGIC_ext);
874	return (struct coro *)mg->mg_ptr;
875	}
876
877	static void	1133	static void
878	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1134	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
879	{	1135	{
880	ta->prev = SvSTATE (prev_sv);	1136	ta->prev = SvSTATE (prev_sv);
881	ta->next = SvSTATE (next_sv);	1137	ta->next = SvSTATE (next_sv);
		1138	TRANSFER_CHECK (*ta);
882	}	1139	}
883		1140
884	static void	1141	static void
885	api_transfer (SV prev_sv, SV next_sv)	1142	api_transfer (SV prev_sv, SV next_sv)
886	{	1143	{
		1144	dTHX;
887	struct transfer_args ta;	1145	struct transfer_args ta;
888		1146
889	prepare_transfer (&ta, prev_sv, next_sv);	1147	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
890	TRANSFER (ta);	1148	TRANSFER (ta);
891	}	1149	}
892		1150
893	static int	1151	static int
894	api_save (SV *coro_sv, int new_save)	1152	api_save (SV *coro_sv, int new_save)
895	{	1153	{
		1154	dTHX;
896	struct coro *coro = SvSTATE (coro_sv);	1155	struct coro *coro = SvSTATE (coro_sv);
897	int old_save = coro->save;	1156	int old_save = coro->save;
898		1157
899	if (new_save >= 0)	1158	if (new_save >= 0)
900	coro->save = new_save;	1159	coro->save = new_save;
…		…
902	return old_save;	1161	return old_save;
903	}	1162	}
904		1163
905	/ Coro ******************************************************************/	1164	/ Coro ******************************************************************/
906		1165
907	#define PRIO_MAX 3
908	#define PRIO_HIGH 1
909	#define PRIO_NORMAL 0
910	#define PRIO_LOW -1
911	#define PRIO_IDLE -3
912	#define PRIO_MIN -4
913
914	/* for Coro.pm */
915	static SV *coro_current;
916	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
917	static int coro_nready;
918
919	static void	1166	static void
920	coro_enq (SV *coro_sv)	1167	coro_enq (pTHX_ SV *coro_sv)
921	{	1168	{
922	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1169	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
923	coro_nready++;
924	}	1170	}
925		1171
926	static SV *	1172	static SV *
927	coro_deq (int min_prio)	1173	coro_deq (pTHX_ int min_prio)
928	{	1174	{
929	int prio = PRIO_MAX - PRIO_MIN;	1175	int prio = PRIO_MAX - PRIO_MIN;
930		1176
931	min_prio -= PRIO_MIN;	1177	min_prio -= PRIO_MIN;
932	if (min_prio < 0)	1178	if (min_prio < 0)
933	min_prio = 0;	1179	min_prio = 0;
934		1180
935	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1181	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
936	if (AvFILLp (coro_ready [prio]) >= 0)	1182	if (AvFILLp (coro_ready [prio]) >= 0)
937	{
938	coro_nready--;
939	return av_shift (coro_ready [prio]);	1183	return av_shift (coro_ready [prio]);
940	}
941		1184
942	return 0;	1185	return 0;
943	}	1186	}
944		1187
945	static int	1188	static int
946	api_ready (SV *coro_sv)	1189	api_ready (SV *coro_sv)
947	{	1190	{
		1191	dTHX;
948	struct coro *coro;	1192	struct coro *coro;
949		1193
950	if (SvROK (coro_sv))	1194	if (SvROK (coro_sv))
951	coro_sv = SvRV (coro_sv);	1195	coro_sv = SvRV (coro_sv);
952		1196
953	coro = SvSTATE (coro_sv);	1197	coro = SvSTATE (coro_sv);
954		1198
955	if (coro->flags & CF_READY)	1199	if (coro->flags & CF_READY)
956	return 0;	1200	return 0;
957		1201
958	#if 0 /* this is actually harmless */
959	if (coro->flags & CF_RUNNING)
960	croak ("Coro::ready called on currently running coroutine");
961	#endif
962
963	coro->flags \|= CF_READY;	1202	coro->flags \|= CF_READY;
964		1203
965	LOCK;	1204	LOCK;
966	coro_enq (SvREFCNT_inc (coro_sv));	1205	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1206	++coro_nready;
967	UNLOCK;	1207	UNLOCK;
968		1208
969	return 1;	1209	return 1;
970	}	1210	}
971		1211
972	static int	1212	static int
973	api_is_ready (SV *coro_sv)	1213	api_is_ready (SV *coro_sv)
974	{	1214	{
		1215	dTHX;
975	return !!SvSTATE (coro_sv)->flags & CF_READY;	1216	return !!(SvSTATE (coro_sv)->flags & CF_READY);
976	}	1217	}
977		1218
978	static void	1219	static void
979	prepare_schedule (struct transfer_args *ta)	1220	prepare_schedule (pTHX_ struct transfer_args *ta)
980	{	1221	{
981	SV prev, next;	1222	SV prev_sv, next_sv;
982		1223
983	for (;;)	1224	for (;;)
984	{	1225	{
985	LOCK;	1226	LOCK;
986	next = coro_deq (PRIO_MIN);	1227	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1228
		1229	/* nothing to schedule: call the idle handler */
		1230	if (!next_sv)
		1231	{
		1232	dSP;
		1233	UNLOCK;
		1234
		1235	ENTER;
		1236	SAVETMPS;
		1237
		1238	PUSHMARK (SP);
		1239	PUTBACK;
		1240	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1241
		1242	FREETMPS;
		1243	LEAVE;
		1244	continue;
		1245	}
		1246
		1247	ta->next = SvSTATE (next_sv);
		1248
		1249	/* cannot transfer to destroyed coros, skip and look for next */
		1250	if (ta->next->flags & CF_DESTROYED)
		1251	{
		1252	UNLOCK;
		1253	SvREFCNT_dec (next_sv);
		1254	/* coro_nready is already taken care of by destroy */
		1255	continue;
		1256	}
		1257
		1258	--coro_nready;
987	UNLOCK;	1259	UNLOCK;
988
989	if (next)
990	break;	1260	break;
991
992	{
993	dSP;
994
995	ENTER;
996	SAVETMPS;
997
998	PUSHMARK (SP);
999	PUTBACK;
1000	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1001
1002	FREETMPS;
1003	LEAVE;
1004	}	1261	}
1005	}
1006
1007	prev = SvRV (coro_current);
1008	SvRV_set (coro_current, next);
1009		1262
1010	/* free this only after the transfer */	1263	/* free this only after the transfer */
1011	LOCK;	1264	prev_sv = SvRV (coro_current);
1012	free_coro_mortal ();
1013	UNLOCK;
1014	coro_mortal = prev;
1015
1016	assert (!SvROK(prev));//D
1017	assert (!SvROK(next));//D
1018
1019	ta->prev = SvSTATE (prev);	1265	ta->prev = SvSTATE (prev_sv);
1020	ta->next = SvSTATE (next);	1266	TRANSFER_CHECK (*ta);
1021
1022	assert (ta->next->flags & CF_READY);	1267	assert (ta->next->flags & CF_READY);
1023	ta->next->flags &= ~CF_READY;	1268	ta->next->flags &= ~CF_READY;
		1269	SvRV_set (coro_current, next_sv);
		1270
		1271	LOCK;
		1272	free_coro_mortal (aTHX);
		1273	coro_mortal = prev_sv;
		1274	UNLOCK;
1024	}	1275	}
1025		1276
1026	static void	1277	static void
1027	prepare_cede (struct transfer_args *ta)	1278	prepare_cede (pTHX_ struct transfer_args *ta)
1028	{	1279	{
1029	api_ready (coro_current);	1280	api_ready (coro_current);
1030
1031	prepare_schedule (ta);	1281	prepare_schedule (aTHX_ ta);
		1282	}
		1283
		1284	static int
		1285	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1286	{
		1287	if (coro_nready)
		1288	{
		1289	SV *prev = SvRV (coro_current);
		1290	prepare_schedule (aTHX_ ta);
		1291	api_ready (prev);
		1292	return 1;
		1293	}
		1294	else
		1295	return 0;
1032	}	1296	}
1033		1297
1034	static void	1298	static void
1035	api_schedule (void)	1299	api_schedule (void)
1036	{	1300	{
		1301	dTHX;
1037	struct transfer_args ta;	1302	struct transfer_args ta;
1038		1303
1039	prepare_schedule (&ta);	1304	prepare_schedule (aTHX_ &ta);
1040	TRANSFER (ta);	1305	TRANSFER (ta);
1041	}	1306	}
1042		1307
1043	static void	1308	static int
1044	api_cede (void)	1309	api_cede (void)
1045	{	1310	{
		1311	dTHX;
1046	struct transfer_args ta;	1312	struct transfer_args ta;
1047		1313
1048	prepare_cede (&ta);	1314	prepare_cede (aTHX_ &ta);
		1315
		1316	if (ta.prev != ta.next)
		1317	{
1049	TRANSFER (ta);	1318	TRANSFER (ta);
		1319	return 1;
		1320	}
		1321	else
		1322	return 0;
		1323	}
		1324
		1325	static int
		1326	api_cede_notself (void)
		1327	{
		1328	dTHX;
		1329	struct transfer_args ta;
		1330
		1331	if (prepare_cede_notself (aTHX_ &ta))
		1332	{
		1333	TRANSFER (ta);
		1334	return 1;
		1335	}
		1336	else
		1337	return 0;
1050	}	1338	}
1051		1339
1052	MODULE = Coro::State PACKAGE = Coro::State	1340	MODULE = Coro::State PACKAGE = Coro::State
1053		1341
1054	PROTOTYPES: DISABLE	1342	PROTOTYPES: DISABLE
…		…
1059	MUTEX_INIT (&coro_mutex);	1347	MUTEX_INIT (&coro_mutex);
1060	#endif	1348	#endif
1061	BOOT_PAGESIZE;	1349	BOOT_PAGESIZE;
1062		1350
1063	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1351	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1352
		1353	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1354	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1355	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1356	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1064		1357
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1358	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1359	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1360	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1361	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1362	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1363	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1069	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1364	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1070		1365
1071	main_mainstack = PL_mainstack;	1366	main_mainstack = PL_mainstack;
		1367	main_top_env = PL_top_env;
		1368
		1369	while (main_top_env->je_prev)
		1370	main_top_env = main_top_env->je_prev;
1072		1371
1073	coroapi.ver = CORO_API_VERSION;	1372	coroapi.ver = CORO_API_VERSION;
1074	coroapi.transfer = api_transfer;	1373	coroapi.transfer = api_transfer;
1075		1374
1076	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1375	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1084	HV *hv;	1383	HV *hv;
1085	int i;	1384	int i;
1086		1385
1087	Newz (0, coro, 1, struct coro);	1386	Newz (0, coro, 1, struct coro);
1088	coro->args = newAV ();	1387	coro->args = newAV ();
1089	coro->save = CORO_SAVE_ALL;	1388	coro->save = CORO_SAVE_DEF;
1090	coro->flags = CF_NEW;	1389	coro->flags = CF_NEW;
1091		1390
		1391	if (coro_first) coro_first->prev = coro;
		1392	coro->next = coro_first;
		1393	coro_first = coro;
		1394
1092	hv = newHV ();	1395	coro->hv = hv = newHV ();
1093	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1396	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1094	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1397	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1095		1398
1096	for (i = 1; i < items; i++)	1399	for (i = 1; i < items; i++)
1097	av_push (coro->args, newSVsv (ST (i)));	1400	av_push (coro->args, newSVsv (ST (i)));
…		…
1104	CODE:	1407	CODE:
1105	RETVAL = api_save (coro, new_save);	1408	RETVAL = api_save (coro, new_save);
1106	OUTPUT:	1409	OUTPUT:
1107	RETVAL	1410	RETVAL
1108		1411
		1412	int
		1413	save_also (SV *coro_sv, int save_also)
		1414	CODE:
		1415	{
		1416	struct coro *coro = SvSTATE (coro_sv);
		1417	RETVAL = coro->save;
		1418	coro->save \|= save_also;
		1419	}
		1420	OUTPUT:
		1421	RETVAL
		1422
1109	void	1423	void
1110	_set_stacklevel (...)	1424	_set_stacklevel (...)
1111	ALIAS:	1425	ALIAS:
1112	Coro::State::transfer = 1	1426	Coro::State::transfer = 1
1113	Coro::schedule = 2	1427	Coro::schedule = 2
1114	Coro::cede = 3	1428	Coro::cede = 3
		1429	Coro::cede_notself = 4
1115	CODE:	1430	CODE:
1116	{	1431	{
1117	struct transfer_args ta;	1432	struct transfer_args ta;
1118		1433
1119	switch (ix)	1434	switch (ix)
…		…
1125		1440
1126	case 1:	1441	case 1:
1127	if (items != 2)	1442	if (items != 2)
1128	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1443	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1129		1444
1130	prepare_transfer (&ta, ST (0), ST (1));	1445	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1131	break;	1446	break;
1132		1447
1133	case 2:	1448	case 2:
1134	prepare_schedule (&ta);	1449	prepare_schedule (aTHX_ &ta);
1135	break;	1450	break;
1136		1451
1137	case 3:	1452	case 3:
1138	prepare_cede (&ta);	1453	prepare_cede (aTHX_ &ta);
		1454	break;
		1455
		1456	case 4:
		1457	if (!prepare_cede_notself (aTHX_ &ta))
		1458	XSRETURN_EMPTY;
		1459
1139	break;	1460	break;
1140	}	1461	}
1141		1462
		1463	BARRIER;
1142	TRANSFER (ta);	1464	TRANSFER (ta);
1143	}
1144		1465
1145	void	1466	if (GIMME_V != G_VOID && ta.next != ta.prev)
1146	_clone_state_from (SV dst, SV src)	1467	XSRETURN_YES;
		1468	}
		1469
		1470	bool
		1471	_destroy (SV *coro_sv)
1147	CODE:	1472	CODE:
1148	{	1473	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1149	struct coro *coro_src = SvSTATE (src);	1474	OUTPUT:
1150		1475	RETVAL
1151	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1152
1153	++coro_src->refcnt;
1154	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1155	}
1156		1476
1157	void	1477	void
1158	_exit (code)	1478	_exit (code)
1159	int code	1479	int code
1160	PROTOTYPE: $	1480	PROTOTYPE: $
1161	CODE:	1481	CODE:
1162	_exit (code);	1482	_exit (code);
1163		1483
1164	int	1484	int
		1485	cctx_stacksize (int new_stacksize = 0)
		1486	CODE:
		1487	RETVAL = coro_stacksize;
		1488	if (new_stacksize)
		1489	coro_stacksize = new_stacksize;
		1490	OUTPUT:
		1491	RETVAL
		1492
		1493	int
1165	cctx_count ()	1494	cctx_count ()
1166	CODE:	1495	CODE:
1167	RETVAL = cctx_count;	1496	RETVAL = cctx_count;
1168	OUTPUT:	1497	OUTPUT:
1169	RETVAL	1498	RETVAL
…		…
1173	CODE:	1502	CODE:
1174	RETVAL = cctx_idle;	1503	RETVAL = cctx_idle;
1175	OUTPUT:	1504	OUTPUT:
1176	RETVAL	1505	RETVAL
1177		1506
		1507	void
		1508	list ()
		1509	PPCODE:
		1510	{
		1511	struct coro *coro;
		1512	for (coro = coro_first; coro; coro = coro->next)
		1513	if (coro->hv)
		1514	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1515	}
		1516
		1517	void
		1518	call (Coro::State coro, SV *coderef)
		1519	ALIAS:
		1520	eval = 1
		1521	CODE:
		1522	{
		1523	if (coro->mainstack)
		1524	{
		1525	struct coro temp;
		1526	Zero (&temp, 1, struct coro);
		1527	temp.save = CORO_SAVE_ALL;
		1528
		1529	if (!(coro->flags & CF_RUNNING))
		1530	{
		1531	save_perl (aTHX_ &temp);
		1532	load_perl (aTHX_ coro);
		1533	}
		1534
		1535	{
		1536	dSP;
		1537	ENTER;
		1538	SAVETMPS;
		1539	PUSHMARK (SP);
		1540	PUTBACK;
		1541	if (ix)
		1542	eval_sv (coderef, 0);
		1543	else
		1544	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1545	SPAGAIN;
		1546	FREETMPS;
		1547	LEAVE;
		1548	PUTBACK;
		1549	}
		1550
		1551	if (!(coro->flags & CF_RUNNING))
		1552	{
		1553	save_perl (aTHX_ coro);
		1554	load_perl (aTHX_ &temp);
		1555	}
		1556	}
		1557	}
		1558
		1559	SV *
		1560	is_ready (Coro::State coro)
		1561	PROTOTYPE: $
		1562	ALIAS:
		1563	is_ready = CF_READY
		1564	is_running = CF_RUNNING
		1565	is_new = CF_NEW
		1566	is_destroyed = CF_DESTROYED
		1567	CODE:
		1568	RETVAL = boolSV (coro->flags & ix);
		1569	OUTPUT:
		1570	RETVAL
		1571
		1572	void
		1573	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1574	CODE:
		1575	if (flags & CC_TRACE)
		1576	{
		1577	if (!coro->cctx)
		1578	coro->cctx = cctx_new ();
		1579	else if (!(coro->cctx->flags & CC_TRACE))
		1580	croak ("cannot enable tracing on coroutine with custom stack");
		1581
		1582	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1583	}
		1584	else
		1585	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1586	{
		1587	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1588	coro->cctx->flags \|= CC_NOREUSE;
		1589
		1590	if (coro->flags & CF_RUNNING)
		1591	PL_runops = RUNOPS_DEFAULT;
		1592	else
		1593	coro->runops = RUNOPS_DEFAULT;
		1594	}
		1595
		1596	SV *
		1597	has_stack (Coro::State coro)
		1598	PROTOTYPE: $
		1599	CODE:
		1600	RETVAL = boolSV (!!coro->cctx);
		1601	OUTPUT:
		1602	RETVAL
		1603
		1604	int
		1605	is_traced (Coro::State coro)
		1606	PROTOTYPE: $
		1607	CODE:
		1608	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1609	OUTPUT:
		1610	RETVAL
		1611
		1612	IV
		1613	rss (Coro::State coro)
		1614	PROTOTYPE: $
		1615	CODE:
		1616	RETVAL = coro_rss (coro);
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620
1178	MODULE = Coro::State PACKAGE = Coro	1621	MODULE = Coro::State PACKAGE = Coro
1179		1622
1180	BOOT:	1623	BOOT:
1181	{	1624	{
1182	int i;	1625	int i;
		1626
		1627	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1628	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1629	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1630
		1631	coro_current = get_sv ("Coro::current", FALSE);
		1632	SvREADONLY_on (coro_current);
1183		1633
1184	coro_stash = gv_stashpv ("Coro", TRUE);	1634	coro_stash = gv_stashpv ("Coro", TRUE);
1185		1635
1186	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1636	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1187	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1637	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1188	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1638	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1189	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1639	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1190	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1640	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1191	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1641	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1192		1642
1193	coro_current = get_sv ("Coro::current", FALSE);
1194	SvREADONLY_on (coro_current);
1195
1196	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1643	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1197	coro_ready[i] = newAV ();	1644	coro_ready[i] = newAV ();
1198		1645
1199	{	1646	{
1200	SV *sv = perl_get_sv("Coro::API", 1);	1647	SV *sv = perl_get_sv("Coro::API", 1);
1201		1648
1202	coroapi.schedule = api_schedule;	1649	coroapi.schedule = api_schedule;
1203	coroapi.save = api_save;	1650	coroapi.save = api_save;
1204	coroapi.cede = api_cede;	1651	coroapi.cede = api_cede;
		1652	coroapi.cede_notself = api_cede_notself;
1205	coroapi.ready = api_ready;	1653	coroapi.ready = api_ready;
1206	coroapi.is_ready = api_is_ready;	1654	coroapi.is_ready = api_is_ready;
1207	coroapi.nready = &coro_nready;	1655	coroapi.nready = &coro_nready;
1208	coroapi.current = coro_current;	1656	coroapi.current = coro_current;
1209		1657
1210	GCoroAPI = &coroapi;	1658	GCoroAPI = &coroapi;
1211	sv_setiv (sv, (IV)&coroapi);	1659	sv_setiv (sv, (IV)&coroapi);
1212	SvREADONLY_on (sv);	1660	SvREADONLY_on (sv);
1213	}	1661	}
…		…
1229	RETVAL = coro->prio;	1677	RETVAL = coro->prio;
1230		1678
1231	if (items > 1)	1679	if (items > 1)
1232	{	1680	{
1233	if (ix)	1681	if (ix)
1234	newprio += coro->prio;	1682	newprio = coro->prio - newprio;
1235		1683
1236	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1684	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1237	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1685	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1238		1686
1239	coro->prio = newprio;	1687	coro->prio = newprio;
1240	}	1688	}
1241	}	1689	}
		1690	OUTPUT:
		1691	RETVAL
1242		1692
1243	SV *	1693	SV *
1244	ready (SV *self)	1694	ready (SV *self)
1245	PROTOTYPE: $	1695	PROTOTYPE: $
1246	CODE:	1696	CODE:
1247	RETVAL = boolSV (api_ready (self));	1697	RETVAL = boolSV (api_ready (self));
1248	OUTPUT:	1698	OUTPUT:
1249	RETVAL	1699	RETVAL
1250		1700
1251	SV *
1252	is_ready (SV *self)
1253	PROTOTYPE: $
1254	CODE:
1255	RETVAL = boolSV (api_is_ready (self));
1256	OUTPUT:
1257	RETVAL
1258
1259	int	1701	int
1260	nready (...)	1702	nready (...)
1261	PROTOTYPE:	1703	PROTOTYPE:
1262	CODE:	1704	CODE:
1263	RETVAL = coro_nready;	1705	RETVAL = coro_nready;
1264	OUTPUT:	1706	OUTPUT:
1265	RETVAL	1707	RETVAL
1266		1708
		1709	# for async_pool speedup
		1710	void
		1711	_pool_1 (SV *cb)
		1712	CODE:
		1713	{
		1714	int i, len;
		1715	HV hv = (HV )SvRV (coro_current);
		1716	AV *defav = GvAV (PL_defgv);
		1717	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1718	AV *invoke_av;
		1719
		1720	if (!invoke)
		1721	croak ("\3terminate\2\n");
		1722
		1723	hv_store (hv, "desc", sizeof ("desc") - 1,
		1724	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1725
		1726	invoke_av = (AV *)SvRV (invoke);
		1727	len = av_len (invoke_av);
		1728
		1729	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1730
		1731	if (len > 0)
		1732	{
		1733	av_fill (defav, len - 1);
		1734	for (i = 0; i < len; ++i)
		1735	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1736	}
		1737
		1738	SvREFCNT_dec (invoke);
		1739	}
		1740
		1741	void
		1742	_pool_2 (SV *cb)
		1743	CODE:
		1744	{
		1745	struct coro *coro = SvSTATE (coro_current);
		1746
		1747	sv_setsv (cb, &PL_sv_undef);
		1748
		1749	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1750	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1751	croak ("\3terminate\2\n");
		1752
		1753	av_clear (GvAV (PL_defgv));
		1754	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1755	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1756	coro->save = CORO_SAVE_DEF;
		1757	coro->prio = 0;
		1758	av_push (av_async_pool, newSVsv (coro_current));
		1759	}
		1760
		1761
1267	MODULE = Coro::State PACKAGE = Coro::AIO	1762	MODULE = Coro::State PACKAGE = Coro::AIO
1268		1763
1269	SV *	1764	SV *
1270	_get_state ()	1765	_get_state ()
1271	CODE:	1766	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs. Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC