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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.123 by root, Mon Dec 4 21:56:00 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	#include <stdio.h>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45		13	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		14
54	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
55	# include <unistd.h>	16	# include <unistd.h>
56	# include <sys/mman.h>	17	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
72	#else	33	#else
73	# define PAGESIZE 0	34	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
75	#endif	36	#endif
76		37
77	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
79	* 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. */
80	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
82		97
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		99
85	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	103	#else
88	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
89	#endif	106	#endif
90		107
91	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
92		109
93	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
99	#else	116	#else
100	# define LOCK (void)0	117	# define LOCK (void)0
101	# define UNLOCK (void)0	118	# define UNLOCK (void)0
102	#endif	119	#endif
103		120
		121	/* helper storage struct for Coro::AIO */
104	struct io_state	122	struct io_state
105	{	123	{
106	int errorno;	124	int errorno;
107	I32 laststype;	125	I32 laststype;
108	int laststatval;	126	int laststatval;
109	Stat_t statcache;	127	Stat_t statcache;
110	};	128	};
111		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
112	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
113	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;
114	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
115	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
116		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
117	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
118	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	};
119		153
120	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
121	typedef struct coro_cctx {	155	typedef struct coro_cctx {
122	struct coro_cctx *next;	156	struct coro_cctx *next;
123		157
124	/* the stack */	158	/* the stack */
125	void *sptr;	159	void *sptr;
126	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
127		161
128	/* cpu state */	162	/* cpu state */
129	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 */
130	JMPENV *top_env;	165	JMPENV *top_env;
131	coro_context cctx;	166	coro_context cctx;
132		167
133	int inuse;
134
135	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
136	int valgrind_id;	169	int valgrind_id;
137	#endif	170	#endif
		171	unsigned char flags;
138	} coro_cctx;	172	} coro_cctx;
139		173
140	enum {	174	enum {
141	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
142	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
143	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 */
144	};	179	};
145		180
146	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
147	struct coro {	182	struct coro {
148	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
…		…
156		191
157	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
158	AV *defav; /* @_ */	193	AV *defav; /* @_ */
159	SV *defsv; /* $_ */	194	SV *defsv; /* $_ */
160	SV *errsv; /* $@ */	195	SV *errsv; /* $@ */
		196	GV *deffh; /* default filehandle */
161	SV *irssv; /* $/ */	197	SV *irssv; /* $/ */
162	SV *irssv_sv; /* real $/ cache */	198	SV *irssv_sv; /* real $/ cache */
163		199
164	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
165	# include "state.h"	201	# include "state.h"
166	#undef VAR	202	#undef VAR
167		203
168	/* coro process data */	204	/* coro process data */
169	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 */
170	};	210	};
171		211
172	typedef struct coro *Coro__State;	212	typedef struct coro *Coro__State;
173	typedef struct coro *Coro__State_or_hashref;	213	typedef struct coro *Coro__State_or_hashref;
174		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
175	static AV *	232	static AV *
176	coro_clone_padlist (CV *cv)	233	coro_clone_padlist (pTHX_ CV *cv)
177	{	234	{
178	AV *padlist = CvPADLIST (cv);	235	AV *padlist = CvPADLIST (cv);
179	AV *newpadlist, *newpad;	236	AV *newpadlist, *newpad;
180		237
181	newpadlist = newAV ();	238	newpadlist = newAV ();
…		…
193		250
194	return newpadlist;	251	return newpadlist;
195	}	252	}
196		253
197	static void	254	static void
198	free_padlist (AV *padlist)	255	free_padlist (pTHX_ AV *padlist)
199	{	256	{
200	/* may be during global destruction */	257	/* may be during global destruction */
201	if (SvREFCNT (padlist))	258	if (SvREFCNT (padlist))
202	{	259	{
203	I32 i = AvFILLp (padlist);	260	I32 i = AvFILLp (padlist);
…		…
224	AV *padlist;	281	AV *padlist;
225	AV *av = (AV *)mg->mg_obj;	282	AV *av = (AV *)mg->mg_obj;
226		283
227	/* casting is fun. */	284	/* casting is fun. */
228	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	285	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
229	free_padlist (padlist);	286	free_padlist (aTHX_ padlist);
230		287
231	SvREFCNT_dec (av);	288	SvREFCNT_dec (av);
232		289
233	return 0;	290	return 0;
234	}	291	}
…		…
242	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	299	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
243	? SvMAGIC (cv) \	300	? SvMAGIC (cv) \
244	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
245	: 0	302	: 0
246		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
247	/* the next two functions merely cache the padlists */	327	/* the next two functions merely cache the padlists */
248	static void	328	static void
249	get_padlist (CV *cv)	329	get_padlist (pTHX_ CV *cv)
250	{	330	{
251	MAGIC *mg = CORO_MAGIC (cv);	331	MAGIC *mg = CORO_MAGIC (cv);
252	AV *av;	332	AV *av;
253		333
254	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	334	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
255	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	335	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
256	else	336	else
257	{	337	{
258	#if 0	338	#if CORO_PREFER_PERL_FUNCTIONS
259	/* this is probably cleaner, but also slower? */	339	/* this is probably cleaner, but also slower? */
260	CV *cp = Perl_cv_clone (cv);	340	CV *cp = Perl_cv_clone (cv);
261	CvPADLIST (cv) = CvPADLIST (cp);	341	CvPADLIST (cv) = CvPADLIST (cp);
262	CvPADLIST (cp) = 0;	342	CvPADLIST (cp) = 0;
263	SvREFCNT_dec (cp);	343	SvREFCNT_dec (cp);
264	#else	344	#else
265	CvPADLIST (cv) = coro_clone_padlist (cv);	345	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
266	#endif	346	#endif
267	}	347	}
268	}	348	}
269		349
270	static void	350	static void
271	put_padlist (CV *cv)	351	put_padlist (pTHX_ CV *cv)
272	{	352	{
273	MAGIC *mg = CORO_MAGIC (cv);	353	MAGIC *mg = CORO_MAGIC (cv);
274	AV *av;	354	AV *av;
275		355
276	if (!mg)	356	if (!mg)
…		…
287	av_extend (av, AvMAX (av) + 1);	367	av_extend (av, AvMAX (av) + 1);
288		368
289	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	369	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
290	}	370	}
291		371
		372	/** load & save, init *******************************************************/
		373
292	#define SB do {	374	#define SB do {
293	#define SE } while (0)	375	#define SE } while (0)
294		376
295	#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
296		378
297	static void	379	static void
298	load_perl (Coro__State c)	380	load_perl (pTHX_ Coro__State c)
299	{	381	{
300	#define VAR(name,type) PL_ ## name = c->name;	382	#define VAR(name,type) PL_ ## name = c->name;
301	# include "state.h"	383	# include "state.h"
302	#undef VAR	384	#undef VAR
303		385
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	386	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	387	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	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
307	if (c->irssv)	391	if (c->irssv)
308	{	392	{
309	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	393	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		394	{
310	SvREFCNT_dec (c->irssv);	395	SvREFCNT_dec (c->irssv);
		396	c->irssv = 0;
		397	}
311	else	398	else
312	{	399	{
313	REPLACE_SV (PL_rs, c->irssv);	400	REPLACE_SV (PL_rs, c->irssv);
314	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	401	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
315	sv_setsv (c->irssv_sv, PL_rs);	402	sv_setsv (c->irssv_sv, PL_rs);
…		…
321	CV *cv;	408	CV *cv;
322		409
323	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
324	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
325	{	412	{
326	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
327	CvDEPTH (cv) = PTR2IV (POPs);	414	CvDEPTH (cv) = PTR2IV (POPs);
328	CvPADLIST (cv) = (AV *)POPs;	415	CvPADLIST (cv) = (AV *)POPs;
329	}	416	}
330		417
331	PUTBACK;	418	PUTBACK;
332	}	419	}
333	}	420	}
334		421
335	static void	422	static void
336	save_perl (Coro__State c)	423	save_perl (pTHX_ Coro__State c)
337	{	424	{
338	{	425	{
339	dSP;	426	dSP;
340	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
344	/*	431	/*
345	* 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
346	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
347	*/	434	*/
348		435
349	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
350	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
351	for (;;)	438	for (;;)
352	{	439	{
353	while (cxix >= 0)	440	while (cxix >= 0)
354	{	441	{
355	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
356		443
357	if (CxTYPE (cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
358	{	445	{
359	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
360		447
361	if (CvDEPTH (cv))	448	if (CvDEPTH (cv))
362	{	449	{
363	EXTEND (SP, 3);	450	EXTEND (SP, 3);
364
365	PUSHs ((SV *)CvPADLIST (cv));	451	PUSHs ((SV *)CvPADLIST (cv));
366	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
368		454
369	CvDEPTH (cv) = 0;	455	CvDEPTH (cv) = 0;
370	get_padlist (cv);	456	get_padlist (aTHX_ cv);
371	}	457	}
372	}	458	}
373	#ifdef CXt_FORMAT
374	else if (CxTYPE (cx) == CXt_FORMAT)
375	{
376	/* I never used formats, so how should I know how these are implemented? */
377	/* my bold guess is as a simple, plain sub... */
378	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
379	}
380	#endif
381	}	459	}
382		460
383	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
384	break;	462	break;
385		463
386	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
387	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
388	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
389	}	467	}
390		468
391	PUTBACK;	469	PUTBACK;
392	}	470	}
393		471
394	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;
395	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
396	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;
397	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;
398		477
399	#define VAR(name,type)c->name = PL_ ## name;	478	#define VAR(name,type)c->name = PL_ ## name;
400	# include "state.h"	479	# include "state.h"
401	#undef VAR	480	#undef VAR
…		…
405	* allocate various perl stacks. This is an exact copy	484	* allocate various perl stacks. This is an exact copy
406	* of perl.c:init_stacks, except that it uses less memory	485	* of perl.c:init_stacks, except that it uses less memory
407	* on the (sometimes correct) assumption that coroutines do	486	* on the (sometimes correct) assumption that coroutines do
408	* not usually need a lot of stackspace.	487	* not usually need a lot of stackspace.
409	*/	488	*/
		489	#if CORO_PREFER_PERL_FUNCTIONS
		490	# define coro_init_stacks init_stacks
		491	#else
410	static void	492	static void
411	coro_init_stacks ()	493	coro_init_stacks (pTHX)
412	{	494	{
413	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	495	PL_curstackinfo = new_stackinfo(64, 6);
414	PL_curstackinfo->si_type = PERLSI_MAIN;	496	PL_curstackinfo->si_type = PERLSI_MAIN;
415	PL_curstack = PL_curstackinfo->si_stack;	497	PL_curstack = PL_curstackinfo->si_stack;
416	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	498	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
417		499
418	PL_stack_base = AvARRAY(PL_curstack);	500	PL_stack_base = AvARRAY(PL_curstack);
419	PL_stack_sp = PL_stack_base;	501	PL_stack_sp = PL_stack_base;
420	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	502	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
421		503
422	New(50,PL_tmps_stack,128,SV*);	504	New(50,PL_tmps_stack,64,SV*);
423	PL_tmps_floor = -1;	505	PL_tmps_floor = -1;
424	PL_tmps_ix = -1;	506	PL_tmps_ix = -1;
425	PL_tmps_max = 128;	507	PL_tmps_max = 64;
426		508
427	New(54,PL_markstack,32,I32);	509	New(54,PL_markstack,16,I32);
428	PL_markstack_ptr = PL_markstack;	510	PL_markstack_ptr = PL_markstack;
429	PL_markstack_max = PL_markstack + 32;	511	PL_markstack_max = PL_markstack + 16;
430		512
431	#ifdef SET_MARK_OFFSET	513	#ifdef SET_MARK_OFFSET
432	SET_MARK_OFFSET;	514	SET_MARK_OFFSET;
433	#endif	515	#endif
434		516
435	New(54,PL_scopestack,32,I32);	517	New(54,PL_scopestack,16,I32);
436	PL_scopestack_ix = 0;	518	PL_scopestack_ix = 0;
437	PL_scopestack_max = 32;	519	PL_scopestack_max = 16;
438		520
439	New(54,PL_savestack,64,ANY);	521	New(54,PL_savestack,64,ANY);
440	PL_savestack_ix = 0;	522	PL_savestack_ix = 0;
441	PL_savestack_max = 64;	523	PL_savestack_max = 64;
442		524
443	#if !PERL_VERSION_ATLEAST (5,9,0)	525	#if !PERL_VERSION_ATLEAST (5,9,0)
444	New(54,PL_retstack,16,OP*);	526	New(54,PL_retstack,4,OP*);
445	PL_retstack_ix = 0;	527	PL_retstack_ix = 0;
446	PL_retstack_max = 16;	528	PL_retstack_max = 4;
447	#endif	529	#endif
448	}	530	}
		531	#endif
449		532
450	/*	533	/*
451	* destroy the stacks, the callchain etc...	534	* destroy the stacks, the callchain etc...
452	*/	535	*/
453	static void	536	static void
454	coro_destroy_stacks ()	537	coro_destroy_stacks (pTHX)
455	{	538	{
456	if (!IN_DESTRUCT)	539	if (!IN_DESTRUCT)
457	{	540	{
458	/* is this ugly, I ask? */	541	/* restore all saved variables and stuff */
459	LEAVE_SCOPE (0);	542	LEAVE_SCOPE (0);
		543	assert (PL_tmps_floor == -1);
460		544
461	/* sure it is, but more important: is it correct?? :/ */	545	/* free all temporaries */
462	FREETMPS;	546	FREETMPS;
		547	assert (PL_tmps_ix == -1);
463		548
		549	/* unwind all extra stacks */
464	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	550	POPSTACK_TO (PL_mainstack);
		551
		552	/* unwind main stack */
		553	dounwind (-1);
465	}	554	}
466		555
467	while (PL_curstackinfo->si_next)	556	while (PL_curstackinfo->si_next)
468	PL_curstackinfo = PL_curstackinfo->si_next;	557	PL_curstackinfo = PL_curstackinfo->si_next;
469		558
470	while (PL_curstackinfo)	559	while (PL_curstackinfo)
471	{	560	{
472	PERL_SI *p = PL_curstackinfo->si_prev;	561	PERL_SI *p = PL_curstackinfo->si_prev;
473		562
474	{ /*D*//*remove*/
475	dSP;
476	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
477	PUTBACK; /* possibly superfluous */
478	}
479
480	if (!IN_DESTRUCT)	563	if (!IN_DESTRUCT)
481	{
482	dounwind (-1);/*D*//*remove*/
483	SvREFCNT_dec (PL_curstackinfo->si_stack);	564	SvREFCNT_dec (PL_curstackinfo->si_stack);
484	}
485		565
486	Safefree (PL_curstackinfo->si_cxstack);	566	Safefree (PL_curstackinfo->si_cxstack);
487	Safefree (PL_curstackinfo);	567	Safefree (PL_curstackinfo);
488	PL_curstackinfo = p;	568	PL_curstackinfo = p;
489	}	569	}
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	575	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	576	Safefree (PL_retstack);
497	#endif	577	#endif
498	}	578	}
499		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 *);
		605	#endif
		606	}
		607
		608	return rss;
		609	}
		610
		611	/** coroutine stack handling ************************************************/
		612
500	static void	613	static void
501	setup_coro (struct coro *coro)	614	setup_coro (pTHX_ struct coro *coro)
502	{	615	{
503	/*	616	/*
504	* emulate part of the perl startup here.	617	* emulate part of the perl startup here.
505	*/	618	*/
506
507	coro_init_stacks ();	619	coro_init_stacks (aTHX);
508		620
		621	PL_runops = RUNOPS_DEFAULT;
509	PL_curcop = &PL_compiling;	622	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	623	PL_in_eval = EVAL_NULL;
		624	PL_comppad = 0;
511	PL_curpm = 0;	625	PL_curpm = 0;
512	PL_localizing = 0;	626	PL_localizing = 0;
513	PL_dirty = 0;	627	PL_dirty = 0;
514	PL_restartop = 0;	628	PL_restartop = 0;
515		629
…		…
523	Zero (&myop, 1, LOGOP);	637	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	638	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	639	myop.op_flags = OPf_WANT_VOID;
526		640
527	PUSHMARK (SP);	641	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	642	XPUSHs (av_shift (GvAV (PL_defgv)));
529	PUTBACK;	643	PUTBACK;
530	PL_op = (OP *)&myop;	644	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	645	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	646	SPAGAIN;
533	}	647	}
534		648
535	ENTER; /* necessary e.g. for dounwind */	649	ENTER; /* necessary e.g. for dounwind */
536	}	650	}
537		651
538	static void	652	static void
539	free_coro_mortal ()	653	free_coro_mortal (pTHX)
540	{	654	{
541	if (coro_mortal)	655	if (coro_mortal)
542	{	656	{
543	SvREFCNT_dec (coro_mortal);	657	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	658	coro_mortal = 0;
545	}	659	}
546	}	660	}
547		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
548	/* 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 */
549	static void NOINLINE	777	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	778	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	779	{
552	dSP;	780	dSP;
553	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;
554		787
555	Zero (&myop, 1, LOGOP);	788	Zero (&myop, 1, LOGOP);
556	myop.op_next = PL_op;	789	myop.op_next = PL_op;
557	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	790	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
558		791
…		…
564	PL_op = (OP *)&myop;	797	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	798	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	799	SPAGAIN;
567	}	800	}
568		801
		802	/*
		803	* this is a _very_ stripped down perl interpreter ;)
		804	*/
569	static void	805	static void
570	coro_run (void *arg)	806	coro_run (void *arg)
571	{	807	{
		808	dTHX;
		809
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	810	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	811	UNLOCK;
574		812
575	/*	813	/* we now skip the entersub that lead to transfer() */
576	* this is a _very_ stripped down perl interpreter ;)	814	PL_op = PL_op->op_next;
577	*/
578	PL_top_env = &PL_start_env;
579		815
580	/* inject call to cctx_init */	816	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	817	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		818
583	/* 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 */
584	PL_restartop = PL_op;	820	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	821	perl_run (PL_curinterp);
586		822
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	823	/*
588	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 */
589	}	832	}
590		833
591	static coro_cctx *	834	static coro_cctx *
592	cctx_new ()	835	cctx_new ()
593	{	836	{
594	coro_cctx *cctx;	837	coro_cctx *cctx;
		838	void *stack_start;
		839	size_t stack_size;
595		840
596	++cctx_count;	841	++cctx_count;
597		842
598	New (0, cctx, 1, coro_cctx);	843	Newz (0, cctx, 1, coro_cctx);
599		844
600	#if HAVE_MMAP	845	#if HAVE_MMAP
601		846
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	847	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	848	/* mmap supposedly does allocate-on-write for us */
604	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);
605		850
606	if (cctx->sptr == (void *)-1)	851	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	852	{
611
612	# if STACKGUARD	853	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	854	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# 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);
615		865
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	866	if (!cctx->sptr)
622	{	867	{
623	perror ("FATAL: unable to malloc stack for coroutine");	868	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	869	_exit (EXIT_FAILURE);
625	}	870	}
626		871
627	#endif	872	stack_start = cctx->sptr;
		873	stack_size = cctx->ssize;
		874	}
628		875
629	#if USE_VALGRIND	876	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
632	cctx->ssize + (char *)cctx->sptr
633	);
634	#endif
635
636	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);
637		878
638	return cctx;	879	return cctx;
639	}	880	}
640		881
641	static void	882	static void
…		…
644	if (!cctx)	885	if (!cctx)
645	return;	886	return;
646		887
647	--cctx_count;	888	--cctx_count;
648		889
649	#if USE_VALGRIND	890	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	891	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	892	#endif
652		893
653	#if HAVE_MMAP	894	#if HAVE_MMAP
		895	if (cctx->flags & CC_MAPPED)
654	munmap (cctx->sptr, cctx->ssize);	896	munmap (cctx->sptr, cctx->ssize);
655	#else	897	else
		898	#endif
656	Safefree (cctx->sptr);	899	Safefree (cctx->sptr);
657	#endif
658		900
659	Safefree (cctx);	901	Safefree (cctx);
660	}	902	}
661		903
662	static coro_cctx *	904	static coro_cctx *
663	cctx_get ()	905	cctx_get (pTHX)
664	{	906	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	907	while (cctx_first)
668	{	908	{
669	cctx = cctx_first;	909	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	910	cctx_first = cctx->next;
671	--cctx_idle;	911	--cctx_idle;
672	}	912
673	else	913	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
674	{	914	return cctx;
675	cctx = cctx_new ();	915
676	PL_op = PL_op->op_next;	916	cctx_destroy (cctx);
677	}	917	}
678		918
679	return cctx;	919	return cctx_new ();
680	}	920	}
681		921
682	static void	922	static void
683	cctx_put (coro_cctx *cctx)	923	cctx_put (coro_cctx *cctx)
684	{	924	{
…		…
687	{	927	{
688	coro_cctx *first = cctx_first;	928	coro_cctx *first = cctx_first;
689	cctx_first = first->next;	929	cctx_first = first->next;
690	--cctx_idle;	930	--cctx_idle;
691		931
692	assert (!first->inuse);
693	cctx_destroy (first);	932	cctx_destroy (first);
694	}	933	}
695		934
696	++cctx_idle;	935	++cctx_idle;
697	cctx->next = cctx_first;	936	cctx->next = cctx_first;
698	cctx_first = cctx;	937	cctx_first = cctx;
699	}	938	}
700		939
701	/* never call directly, always through the coro_state_transfer global variable */	940	/** coroutine switching *****************************************************/
		941
702	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
703	transfer (struct coro *prev, struct coro *next)	963	transfer (pTHX_ struct coro *prev, struct coro *next)
704	{	964	{
705	dSTACKLEVEL;	965	dSTACKLEVEL;
706		966
707	/* sometimes transfer is only called to set idle_sp */	967	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	968	if (!next)
		969	{
709	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	970	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		971	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
		972	}
710	else if (prev != next)	973	else if (prev != next)
711	{	974	{
712	coro_cctx *prev__cctx;	975	coro_cctx *prev__cctx;
713		976
714	if (prev->flags & CF_NEW)	977	if (prev->flags & CF_NEW)
715	{	978	{
716	/* create a new empty context */	979	/* create a new empty context */
717	Newz (0, prev->cctx, 1, coro_cctx);	980	Newz (0, prev->cctx, 1, coro_cctx);
718	prev->cctx->inuse = 1;
719	prev->flags &= ~CF_NEW;	981	prev->flags &= ~CF_NEW;
720	prev->flags |= CF_RUNNING;	982	prev->flags |= CF_RUNNING;
721	}	983	}
722
723	/*TODO: must not croak here */
724	if (!prev->flags & CF_RUNNING)
725	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
726
727	if (next->flags & CF_RUNNING)
728	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
729		984
730	prev->flags &= ~CF_RUNNING;	985	prev->flags &= ~CF_RUNNING;
731	next->flags |= CF_RUNNING;	986	next->flags |= CF_RUNNING;
732		987
733	LOCK;	988	LOCK;
…		…
735	if (next->flags & CF_NEW)	990	if (next->flags & CF_NEW)
736	{	991	{
737	/* need to start coroutine */	992	/* need to start coroutine */
738	next->flags &= ~CF_NEW;	993	next->flags &= ~CF_NEW;
739	/* first get rid of the old state */	994	/* first get rid of the old state */
740	save_perl (prev);	995	save_perl (aTHX_ prev);
741	/* setup coroutine call */	996	/* setup coroutine call */
742	setup_coro (next);	997	setup_coro (aTHX_ next);
743	/* need a new stack */
744	assert (!next->stack);
745	}	998	}
746	else	999	else
747	{	1000	{
748	/* coroutine already started */	1001	/* coroutine already started */
749	save_perl (prev);	1002	save_perl (aTHX_ prev);
750	load_perl (next);	1003	load_perl (aTHX_ next);
751	}	1004	}
752		1005
753	prev__cctx = prev->cctx;	1006	prev__cctx = prev->cctx;
754		1007
755	/* possibly "free" the cctx */	1008	/* possibly "free" the cctx */
756	if (prev__cctx->idle_sp == STACKLEVEL)	1009	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
757	{	1010	{
758	/* 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 */
759	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));
760		1013
761	prev->cctx = 0;	1014	prev->cctx = 0;
762		1015
763	cctx_put (prev__cctx);	1016	cctx_put (prev__cctx);
764	prev__cctx->inuse = 0;
765	}	1017	}
766		1018
767	if (!next->cctx)	1019	if (!next->cctx)
768	{
769	next->cctx = cctx_get ();	1020	next->cctx = cctx_get (aTHX);
770	assert (!next->cctx->inuse);
771	next->cctx->inuse = 1;
772	}
773		1021
774	if (prev__cctx != next->cctx)	1022	if (prev__cctx != next->cctx)
775	{	1023	{
776	prev__cctx->top_env = PL_top_env;	1024	prev__cctx->top_env = PL_top_env;
777	PL_top_env = next->cctx->top_env;	1025	PL_top_env = next->cctx->top_env;
778	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1026	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
779	}	1027	}
780		1028
781	free_coro_mortal ();	1029	free_coro_mortal (aTHX);
782
783	UNLOCK;	1030	UNLOCK;
784	}	1031	}
785	}	1032	}
786		1033
787	struct transfer_args	1034	struct transfer_args
788	{	1035	{
789	struct coro *prev, *next;	1036	struct coro *prev, *next;
790	};	1037	};
791		1038
792	#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)
793		1041
		1042	/** high level stuff ********************************************************/
		1043
794	static void	1044	static int
795	coro_state_destroy (struct coro *coro)	1045	coro_state_destroy (pTHX_ struct coro *coro)
796	{	1046	{
797	if (coro->refcnt--)	1047	if (coro->flags & CF_DESTROYED)
798	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 */
799		1062
800	if (coro->mainstack && coro->mainstack != main_mainstack)	1063	if (coro->mainstack && coro->mainstack != main_mainstack)
801	{	1064	{
802	struct coro temp;	1065	struct coro temp;
		1066
		1067	assert (!(coro->flags & CF_RUNNING));
		1068
803	Zero (&temp, 1, struct coro);	1069	Zero (&temp, 1, struct coro);
804	temp.save = CORO_SAVE_ALL;	1070	temp.save = CORO_SAVE_ALL;
805		1071
806	if (coro->flags & CF_RUNNING)	1072	if (coro->flags & CF_RUNNING)
807	croak ("FATAL: tried to destroy currently running coroutine");	1073	croak ("FATAL: tried to destroy currently running coroutine");
808		1074
809	save_perl (&temp);	1075	save_perl (aTHX_ &temp);
810	load_perl (coro);	1076	load_perl (aTHX_ coro);
811		1077
812	coro_destroy_stacks ();	1078	coro_destroy_stacks (aTHX);
813		1079
814	load_perl (&temp); /* this will get rid of defsv etc.. */	1080	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
815		1081
816	coro->mainstack = 0;	1082	coro->mainstack = 0;
817	}	1083	}
818		1084
819	cctx_destroy (coro->cctx);	1085	cctx_destroy (coro->cctx);
820	SvREFCNT_dec (coro->args);	1086	SvREFCNT_dec (coro->args);
821	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;
822	}	1093	}
823		1094
824	static int	1095	static int
825	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1096	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
826	{	1097	{
827	struct coro *coro = (struct coro *)mg->mg_ptr;	1098	struct coro *coro = (struct coro *)mg->mg_ptr;
828	mg->mg_ptr = 0;	1099	mg->mg_ptr = 0;
829		1100
		1101	coro->hv = 0;
		1102
		1103	if (--coro->refcnt < 0)
		1104	{
830	coro_state_destroy (coro);	1105	coro_state_destroy (aTHX_ coro);
		1106	Safefree (coro);
		1107	}
831		1108
832	return 0;	1109	return 0;
833	}	1110	}
834		1111
835	static int	1112	static int
…		…
842	return 0;	1119	return 0;
843	}	1120	}
844		1121
845	static MGVTBL coro_state_vtbl = {	1122	static MGVTBL coro_state_vtbl = {
846	0, 0, 0, 0,	1123	0, 0, 0, 0,
847	coro_state_clear,	1124	coro_state_free,
848	0,	1125	0,
849	#ifdef MGf_DUP	1126	#ifdef MGf_DUP
850	coro_state_dup,	1127	coro_state_dup,
851	#else	1128	#else
852	# define MGf_DUP 0	1129	# define MGf_DUP 0
853	#endif	1130	#endif
854	};	1131	};
855		1132
856	static struct coro *
857	SvSTATE (SV *coro)
858	{
859	HV *stash;
860	MAGIC *mg;
861
862	if (SvROK (coro))
863	coro = SvRV (coro);
864
865	stash = SvSTASH (coro);
866	if (stash != coro_stash && stash != coro_state_stash)
867	{
868	/* very slow, but rare, check */
869	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
870	croak ("Coro::State object required");
871	}
872
873	mg = SvMAGIC (coro);
874	assert (mg->mg_type == PERL_MAGIC_ext);
875	return (struct coro *)mg->mg_ptr;
876	}
877
878	static void	1133	static void
879	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)
880	{	1135	{
881	ta->prev = SvSTATE (prev_sv);	1136	ta->prev = SvSTATE (prev_sv);
882	ta->next = SvSTATE (next_sv);	1137	ta->next = SvSTATE (next_sv);
		1138	TRANSFER_CHECK (*ta);
883	}	1139	}
884		1140
885	static void	1141	static void
886	api_transfer (SV *prev_sv, SV *next_sv)	1142	api_transfer (SV *prev_sv, SV *next_sv)
887	{	1143	{
		1144	dTHX;
888	struct transfer_args ta;	1145	struct transfer_args ta;
889		1146
890	prepare_transfer (&ta, prev_sv, next_sv);	1147	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
891	TRANSFER (ta);	1148	TRANSFER (ta);
892	}	1149	}
893		1150
894	static int	1151	static int
895	api_save (SV *coro_sv, int new_save)	1152	api_save (SV *coro_sv, int new_save)
896	{	1153	{
		1154	dTHX;
897	struct coro *coro = SvSTATE (coro_sv);	1155	struct coro *coro = SvSTATE (coro_sv);
898	int old_save = coro->save;	1156	int old_save = coro->save;
899		1157
900	if (new_save >= 0)	1158	if (new_save >= 0)
901	coro->save = new_save;	1159	coro->save = new_save;
…		…
903	return old_save;	1161	return old_save;
904	}	1162	}
905		1163
906	/** Coro ********************************************************************/	1164	/** Coro ********************************************************************/
907		1165
908	#define PRIO_MAX 3
909	#define PRIO_HIGH 1
910	#define PRIO_NORMAL 0
911	#define PRIO_LOW -1
912	#define PRIO_IDLE -3
913	#define PRIO_MIN -4
914
915	/* for Coro.pm */
916	static SV *coro_current;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;
919
920	static void	1166	static void
921	coro_enq (SV *coro_sv)	1167	coro_enq (pTHX_ SV *coro_sv)
922	{	1168	{
923	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);
924	coro_nready++;
925	}	1170	}
926		1171
927	static SV *	1172	static SV *
928	coro_deq (int min_prio)	1173	coro_deq (pTHX_ int min_prio)
929	{	1174	{
930	int prio = PRIO_MAX - PRIO_MIN;	1175	int prio = PRIO_MAX - PRIO_MIN;
931		1176
932	min_prio -= PRIO_MIN;	1177	min_prio -= PRIO_MIN;
933	if (min_prio < 0)	1178	if (min_prio < 0)
934	min_prio = 0;	1179	min_prio = 0;
935		1180
936	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1181	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
937	if (AvFILLp (coro_ready [prio]) >= 0)	1182	if (AvFILLp (coro_ready [prio]) >= 0)
938	{
939	coro_nready--;
940	return av_shift (coro_ready [prio]);	1183	return av_shift (coro_ready [prio]);
941	}
942		1184
943	return 0;	1185	return 0;
944	}	1186	}
945		1187
946	static int	1188	static int
947	api_ready (SV *coro_sv)	1189	api_ready (SV *coro_sv)
948	{	1190	{
		1191	dTHX;
949	struct coro *coro;	1192	struct coro *coro;
950		1193
951	if (SvROK (coro_sv))	1194	if (SvROK (coro_sv))
952	coro_sv = SvRV (coro_sv);	1195	coro_sv = SvRV (coro_sv);
953		1196
954	coro = SvSTATE (coro_sv);	1197	coro = SvSTATE (coro_sv);
955		1198
956	if (coro->flags & CF_READY)	1199	if (coro->flags & CF_READY)
957	return 0;	1200	return 0;
958		1201
959	#if 0 /* this is actually harmless */
960	if (coro->flags & CF_RUNNING)
961	croak ("Coro::ready called on currently running coroutine");
962	#endif
963
964	coro->flags |= CF_READY;	1202	coro->flags |= CF_READY;
965		1203
966	LOCK;	1204	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1205	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1206	++coro_nready;
968	UNLOCK;	1207	UNLOCK;
969		1208
970	return 1;	1209	return 1;
971	}	1210	}
972		1211
973	static int	1212	static int
974	api_is_ready (SV *coro_sv)	1213	api_is_ready (SV *coro_sv)
975	{	1214	{
		1215	dTHX;
976	return !!SvSTATE (coro_sv)->flags & CF_READY;	1216	return !!(SvSTATE (coro_sv)->flags & CF_READY);
977	}	1217	}
978		1218
979	static void	1219	static void
980	prepare_schedule (struct transfer_args *ta)	1220	prepare_schedule (pTHX_ struct transfer_args *ta)
981	{	1221	{
982	SV *prev, *next;	1222	SV *prev_sv, *next_sv;
983		1223
984	for (;;)	1224	for (;;)
985	{	1225	{
986	LOCK;	1226	LOCK;
987	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;
988	UNLOCK;	1259	UNLOCK;
989
990	if (next)
991	break;	1260	break;
992
993	{
994	dSP;
995
996	ENTER;
997	SAVETMPS;
998
999	PUSHMARK (SP);
1000	PUTBACK;
1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1002
1003	FREETMPS;
1004	LEAVE;
1005	}	1261	}
1006	}
1007
1008	prev = SvRV (coro_current);
1009	SvRV_set (coro_current, next);
1010		1262
1011	/* free this only after the transfer */	1263	/* free this only after the transfer */
1012	LOCK;	1264	prev_sv = SvRV (coro_current);
1013	free_coro_mortal ();
1014	UNLOCK;
1015	coro_mortal = prev;
1016
1017	assert (!SvROK(prev));//D
1018	assert (!SvROK(next));//D
1019
1020	ta->prev = SvSTATE (prev);	1265	ta->prev = SvSTATE (prev_sv);
1021	ta->next = SvSTATE (next);	1266	TRANSFER_CHECK (*ta);
1022
1023	assert (ta->next->flags & CF_READY);	1267	assert (ta->next->flags & CF_READY);
1024	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;
1025	}	1275	}
1026		1276
1027	static void	1277	static void
1028	prepare_cede (struct transfer_args *ta)	1278	prepare_cede (pTHX_ struct transfer_args *ta)
1029	{	1279	{
1030	api_ready (coro_current);	1280	api_ready (coro_current);
1031
1032	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;
1033	}	1296	}
1034		1297
1035	static void	1298	static void
1036	api_schedule (void)	1299	api_schedule (void)
1037	{	1300	{
		1301	dTHX;
1038	struct transfer_args ta;	1302	struct transfer_args ta;
1039		1303
1040	prepare_schedule (&ta);	1304	prepare_schedule (aTHX_ &ta);
1041	TRANSFER (ta);	1305	TRANSFER (ta);
1042	}	1306	}
1043		1307
1044	static void	1308	static int
1045	api_cede (void)	1309	api_cede (void)
1046	{	1310	{
		1311	dTHX;
1047	struct transfer_args ta;	1312	struct transfer_args ta;
1048		1313
1049	prepare_cede (&ta);	1314	prepare_cede (aTHX_ &ta);
		1315
		1316	if (ta.prev != ta.next)
		1317	{
1050	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;
1051	}	1338	}
1052		1339
1053	MODULE = Coro::State PACKAGE = Coro::State	1340	MODULE = Coro::State PACKAGE = Coro::State
1054		1341
1055	PROTOTYPES: DISABLE	1342	PROTOTYPES: DISABLE
…		…
1060	MUTEX_INIT (&coro_mutex);	1347	MUTEX_INIT (&coro_mutex);
1061	#endif	1348	#endif
1062	BOOT_PAGESIZE;	1349	BOOT_PAGESIZE;
1063		1350
1064	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));
1065		1357
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1358	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1067	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1359	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1360	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1069	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));
1070	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1364	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1071		1365
1072	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;
1073		1371
1074	coroapi.ver = CORO_API_VERSION;	1372	coroapi.ver = CORO_API_VERSION;
1075	coroapi.transfer = api_transfer;	1373	coroapi.transfer = api_transfer;
1076		1374
1077	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1375	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1085	HV *hv;	1383	HV *hv;
1086	int i;	1384	int i;
1087		1385
1088	Newz (0, coro, 1, struct coro);	1386	Newz (0, coro, 1, struct coro);
1089	coro->args = newAV ();	1387	coro->args = newAV ();
1090	coro->save = CORO_SAVE_ALL;	1388	coro->save = CORO_SAVE_DEF;
1091	coro->flags = CF_NEW;	1389	coro->flags = CF_NEW;
1092		1390
		1391	if (coro_first) coro_first->prev = coro;
		1392	coro->next = coro_first;
		1393	coro_first = coro;
		1394
1093	hv = newHV ();	1395	coro->hv = hv = newHV ();
1094	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;
1095	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1397	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1096		1398
1097	for (i = 1; i < items; i++)	1399	for (i = 1; i < items; i++)
1098	av_push (coro->args, newSVsv (ST (i)));	1400	av_push (coro->args, newSVsv (ST (i)));
…		…
1105	CODE:	1407	CODE:
1106	RETVAL = api_save (coro, new_save);	1408	RETVAL = api_save (coro, new_save);
1107	OUTPUT:	1409	OUTPUT:
1108	RETVAL	1410	RETVAL
1109		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
1110	void	1423	void
1111	_set_stacklevel (...)	1424	_set_stacklevel (...)
1112	ALIAS:	1425	ALIAS:
1113	Coro::State::transfer = 1	1426	Coro::State::transfer = 1
1114	Coro::schedule = 2	1427	Coro::schedule = 2
1115	Coro::cede = 3	1428	Coro::cede = 3
		1429	Coro::cede_notself = 4
1116	CODE:	1430	CODE:
1117	{	1431	{
1118	struct transfer_args ta;	1432	struct transfer_args ta;
1119		1433
1120	switch (ix)	1434	switch (ix)
…		…
1126		1440
1127	case 1:	1441	case 1:
1128	if (items != 2)	1442	if (items != 2)
1129	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);
1130		1444
1131	prepare_transfer (&ta, ST (0), ST (1));	1445	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1132	break;	1446	break;
1133		1447
1134	case 2:	1448	case 2:
1135	prepare_schedule (&ta);	1449	prepare_schedule (aTHX_ &ta);
1136	break;	1450	break;
1137		1451
1138	case 3:	1452	case 3:
1139	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
1140	break;	1460	break;
1141	}	1461	}
1142		1462
		1463	BARRIER;
1143	TRANSFER (ta);	1464	TRANSFER (ta);
1144	}
1145		1465
1146	void	1466	if (GIMME_V != G_VOID && ta.next != ta.prev)
1147	_clone_state_from (SV *dst, SV *src)	1467	XSRETURN_YES;
		1468	}
		1469
		1470	bool
		1471	_destroy (SV *coro_sv)
1148	CODE:	1472	CODE:
1149	{	1473	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1150	struct coro *coro_src = SvSTATE (src);	1474	OUTPUT:
1151		1475	RETVAL
1152	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1153
1154	++coro_src->refcnt;
1155	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1156	}
1157		1476
1158	void	1477	void
1159	_exit (code)	1478	_exit (code)
1160	int code	1479	int code
1161	PROTOTYPE: $	1480	PROTOTYPE: $
1162	CODE:	1481	CODE:
1163	_exit (code);	1482	_exit (code);
1164		1483
1165	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
1166	cctx_count ()	1494	cctx_count ()
1167	CODE:	1495	CODE:
1168	RETVAL = cctx_count;	1496	RETVAL = cctx_count;
1169	OUTPUT:	1497	OUTPUT:
1170	RETVAL	1498	RETVAL
…		…
1174	CODE:	1502	CODE:
1175	RETVAL = cctx_idle;	1503	RETVAL = cctx_idle;
1176	OUTPUT:	1504	OUTPUT:
1177	RETVAL	1505	RETVAL
1178		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
1179	MODULE = Coro::State PACKAGE = Coro	1621	MODULE = Coro::State PACKAGE = Coro
1180		1622
1181	BOOT:	1623	BOOT:
1182	{	1624	{
1183	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);
1184		1633
1185	coro_stash = gv_stashpv ("Coro", TRUE);	1634	coro_stash = gv_stashpv ("Coro", TRUE);
1186		1635
1187	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1636	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1188	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1637	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1189	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1638	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1190	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1639	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1191	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1640	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1192	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1641	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1193		1642
1194	coro_current = get_sv ("Coro::current", FALSE);
1195	SvREADONLY_on (coro_current);
1196
1197	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1643	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1198	coro_ready[i] = newAV ();	1644	coro_ready[i] = newAV ();
1199		1645
1200	{	1646	{
1201	SV *sv = perl_get_sv("Coro::API", 1);	1647	SV *sv = perl_get_sv("Coro::API", 1);
1202		1648
1203	coroapi.schedule = api_schedule;	1649	coroapi.schedule = api_schedule;
1204	coroapi.save = api_save;	1650	coroapi.save = api_save;
1205	coroapi.cede = api_cede;	1651	coroapi.cede = api_cede;
		1652	coroapi.cede_notself = api_cede_notself;
1206	coroapi.ready = api_ready;	1653	coroapi.ready = api_ready;
1207	coroapi.is_ready = api_is_ready;	1654	coroapi.is_ready = api_is_ready;
1208	coroapi.nready = &coro_nready;	1655	coroapi.nready = &coro_nready;
1209	coroapi.current = coro_current;	1656	coroapi.current = coro_current;
1210		1657
1211	GCoroAPI = &coroapi;	1658	GCoroAPI = &coroapi;
1212	sv_setiv (sv, (IV)&coroapi);	1659	sv_setiv (sv, (IV)&coroapi);
1213	SvREADONLY_on (sv);	1660	SvREADONLY_on (sv);
1214	}	1661	}
…		…
1230	RETVAL = coro->prio;	1677	RETVAL = coro->prio;
1231		1678
1232	if (items > 1)	1679	if (items > 1)
1233	{	1680	{
1234	if (ix)	1681	if (ix)
1235	newprio += coro->prio;	1682	newprio = coro->prio - newprio;
1236		1683
1237	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1684	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1238	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1685	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1239		1686
1240	coro->prio = newprio;	1687	coro->prio = newprio;
1241	}	1688	}
1242	}	1689	}
		1690	OUTPUT:
		1691	RETVAL
1243		1692
1244	SV *	1693	SV *
1245	ready (SV *self)	1694	ready (SV *self)
1246	PROTOTYPE: $	1695	PROTOTYPE: $
1247	CODE:	1696	CODE:
1248	RETVAL = boolSV (api_ready (self));	1697	RETVAL = boolSV (api_ready (self));
1249	OUTPUT:	1698	OUTPUT:
1250	RETVAL	1699	RETVAL
1251		1700
1252	SV *
1253	is_ready (SV *self)
1254	PROTOTYPE: $
1255	CODE:
1256	RETVAL = boolSV (api_is_ready (self));
1257	OUTPUT:
1258	RETVAL
1259
1260	int	1701	int
1261	nready (...)	1702	nready (...)
1262	PROTOTYPE:	1703	PROTOTYPE:
1263	CODE:	1704	CODE:
1264	RETVAL = coro_nready;	1705	RETVAL = coro_nready;
1265	OUTPUT:	1706	OUTPUT:
1266	RETVAL	1707	RETVAL
1267		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
1268	MODULE = Coro::State PACKAGE = Coro::AIO	1762	MODULE = Coro::State PACKAGE = Coro::AIO
1269		1763
1270	SV *	1764	SV *
1271	_get_state ()	1765	_get_state ()
1272	CODE:	1766	CODE:

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