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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.191 by root, Fri Oct 5 20:47:49 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	#include <assert.h>	13	#include <assert.h>
46
47	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
48	# undef STACKGUARD
49	#endif
50
51	#ifndef STACKGUARD
52	# define STACKGUARD 0
53	#endif
54		14
55	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
56	# include <unistd.h>	16	# include <unistd.h>
57	# include <sys/mman.h>	17	# include <sys/mman.h>
58	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
73	#else	33	#else
74	# define PAGESIZE 0	34	# define PAGESIZE 0
75	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
76	#endif	36	#endif
77		37
78	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
79	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
80	* 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	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84	#ifndef newSV
		85	# define newSV(l) NEWSV(0,l)
		86	#endif
		87
		88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		89	# undef CORO_STACKGUARD
		90	#endif
		91
		92	#ifndef CORO_STACKGUARD
		93	# define CORO_STACKGUARD 0
		94	#endif
		95
		96	/* prefer perl internal functions over our own? */
		97	#ifndef CORO_PREFER_PERL_FUNCTIONS
		98	# define CORO_PREFER_PERL_FUNCTIONS 0
		99	#endif
		100
		101	/* The next macros try to return the current stack pointer, in an as
		102	* portable way as possible. */
81	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
82	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
83		105
84	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
85		107
86	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
87	# define attribute(x) __attribute__(x)	109	# define attribute(x) __attribute__(x)
		110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
88	#else	111	#else
89	# define attribute(x)	112	# define attribute(x)
		113	# define BARRIER
90	#endif	114	#endif
91		115
92	#define NOINLINE attribute ((noinline))	116	#define NOINLINE attribute ((noinline))
93		117
94	#include "CoroAPI.h"	118	#include "CoroAPI.h"
…		…
100	#else	124	#else
101	# define LOCK (void)0	125	# define LOCK (void)0
102	# define UNLOCK (void)0	126	# define UNLOCK (void)0
103	#endif	127	#endif
104		128
		129	/* helper storage struct for Coro::AIO */
105	struct io_state	130	struct io_state
106	{	131	{
107	int errorno;	132	int errorno;
108	I32 laststype;	133	I32 laststype;
109	int laststatval;	134	int laststatval;
110	Stat_t statcache;	135	Stat_t statcache;
111	};	136	};
112		137
		138	static size_t coro_stacksize = CORO_STACKSIZE;
113	static struct CoroAPI coroapi;	139	static struct CoroAPI coroapi;
114	static AV *main_mainstack; /* used to differentiate between $main and others */	140	static AV *main_mainstack; /* used to differentiate between $main and others */
		141	static JMPENV *main_top_env;
115	static HV *coro_state_stash, *coro_stash;	142	static HV *coro_state_stash, *coro_stash;
116	static SV *coro_mortal; /* will be freed after next transfer */	143	static SV *coro_mortal; /* will be freed after next transfer */
117		144
		145	static GV *irsgv; /* $/ */
		146	static GV *stdoutgv; /* *STDOUT */
		147
		148	/* async_pool helper stuff */
		149	static SV *sv_pool_rss;
		150	static SV *sv_pool_size;
		151	static AV *av_async_pool;
		152
118	static struct coro_cctx *cctx_first;	153	static struct coro_cctx *cctx_first;
119	static int cctx_count, cctx_idle;	154	static int cctx_count, cctx_idle;
		155
		156	enum {
		157	CC_MAPPED = 0x01,
		158	CC_NOREUSE = 0x02, /* throw this away after tracing */
		159	CC_TRACE = 0x04,
		160	CC_TRACE_SUB = 0x08, /* trace sub calls */
		161	CC_TRACE_LINE = 0x10, /* trace each statement */
		162	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		163	};
120		164
121	/* this is a structure representing a c-level coroutine */	165	/* this is a structure representing a c-level coroutine */
122	typedef struct coro_cctx {	166	typedef struct coro_cctx {
123	struct coro_cctx *next;	167	struct coro_cctx *next;
124		168
125	/* the stack */	169	/* the stack */
126	void *sptr;	170	void *sptr;
127	long ssize; /* positive == mmap, otherwise malloc */	171	size_t ssize;
128		172
129	/* cpu state */	173	/* cpu state */
130	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	174	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		175	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
131	JMPENV *top_env;	176	JMPENV *top_env;
132	coro_context cctx;	177	coro_context cctx;
133		178
134	int inuse;
135
136	#if USE_VALGRIND	179	#if CORO_USE_VALGRIND
137	int valgrind_id;	180	int valgrind_id;
138	#endif	181	#endif
		182	unsigned char flags;
139	} coro_cctx;	183	} coro_cctx;
140		184
141	enum {	185	enum {
142	CF_RUNNING = 0x0001, /* coroutine is running */	186	CF_RUNNING = 0x0001, /* coroutine is running */
143	CF_READY = 0x0002, /* coroutine is ready */	187	CF_READY = 0x0002, /* coroutine is ready */
144	CF_NEW = 0x0004, /* ahs never been switched to */	188	CF_NEW = 0x0004, /* has never been switched to */
		189	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
145	};	190	};
146		191
147	/* this is a structure representing a perl-level coroutine */	192	/* this is a structure representing a perl-level coroutine */
148	struct coro {	193	struct coro {
149	/* the c coroutine allocated to this perl coroutine, if any */	194	/* the c coroutine allocated to this perl coroutine, if any */
150	coro_cctx *cctx;	195	coro_cctx *cctx;
151		196
152	/* data associated with this coroutine (initial args) */	197	/* data associated with this coroutine (initial args) */
153	AV *args;	198	AV *args;
154	int refcnt;	199	int refcnt;
155	int save; /* CORO_SAVE flags */
156	int flags; /* CF_ flags */	200	int flags; /* CF_ flags */
157		201
158	/* optionally saved, might be zero */	202	/* optionally saved, might be zero */
159	AV *defav; /* @_ */	203	AV *defav; /* @_ */
160	SV *defsv; /* $_ */	204	SV *defsv; /* $_ */
161	SV *errsv; /* $@ */	205	SV *errsv; /* $@ */
		206	SV *deffh; /* default filehandle */
162	SV *irssv; /* $/ */	207	SV *irssv; /* $/ */
163	SV *irssv_sv; /* real $/ cache */	208	SV *irssv_sv; /* real $/ cache */
164		209
165	#define VAR(name,type) type name;	210	#define VAR(name,type) type name;
166	# include "state.h"	211	# include "state.h"
167	#undef VAR	212	#undef VAR
168		213
		214	/* statistics */
		215	int usecount; /* number of transfers to this coro */
		216
169	/* coro process data */	217	/* coro process data */
170	int prio;	218	int prio;
		219	//SV *throw;
		220
		221	/* async_pool */
		222	SV *saved_deffh;
		223
		224	/* linked list */
		225	struct coro *next, *prev;
		226	HV *hv; /* the perl hash associated with this coro, if any */
171	};	227	};
172		228
173	typedef struct coro *Coro__State;	229	typedef struct coro *Coro__State;
174	typedef struct coro *Coro__State_or_hashref;	230	typedef struct coro *Coro__State_or_hashref;
175		231
		232	/** Coro ********************************************************************/
		233
		234	#define PRIO_MAX 3
		235	#define PRIO_HIGH 1
		236	#define PRIO_NORMAL 0
		237	#define PRIO_LOW -1
		238	#define PRIO_IDLE -3
		239	#define PRIO_MIN -4
		240
		241	/* for Coro.pm */
		242	static SV *coro_current;
		243	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		244	static int coro_nready;
		245	static struct coro *coro_first;
		246
		247	/** lowlevel stuff **********************************************************/
		248
176	static AV *	249	static AV *
177	coro_clone_padlist (CV *cv)	250	coro_clone_padlist (pTHX_ CV *cv)
178	{	251	{
179	AV *padlist = CvPADLIST (cv);	252	AV *padlist = CvPADLIST (cv);
180	AV *newpadlist, *newpad;	253	AV *newpadlist, *newpad;
181		254
182	newpadlist = newAV ();	255	newpadlist = newAV ();
…		…
194		267
195	return newpadlist;	268	return newpadlist;
196	}	269	}
197		270
198	static void	271	static void
199	free_padlist (AV *padlist)	272	free_padlist (pTHX_ AV *padlist)
200	{	273	{
201	/* may be during global destruction */	274	/* may be during global destruction */
202	if (SvREFCNT (padlist))	275	if (SvREFCNT (padlist))
203	{	276	{
204	I32 i = AvFILLp (padlist);	277	I32 i = AvFILLp (padlist);
…		…
225	AV *padlist;	298	AV *padlist;
226	AV *av = (AV *)mg->mg_obj;	299	AV *av = (AV *)mg->mg_obj;
227		300
228	/* casting is fun. */	301	/* casting is fun. */
229	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	302	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
230	free_padlist (padlist);	303	free_padlist (aTHX_ padlist);
231		304
232	SvREFCNT_dec (av);	305	SvREFCNT_dec (av);
233		306
234	return 0;	307	return 0;
235	}	308	}
…		…
243	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
244	? SvMAGIC (cv) \	317	? SvMAGIC (cv) \
245	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
246	: 0	319	: 0
247		320
		321	static struct coro *
		322	SvSTATE_ (pTHX_ SV *coro)
		323	{
		324	HV *stash;
		325	MAGIC *mg;
		326
		327	if (SvROK (coro))
		328	coro = SvRV (coro);
		329
		330	if (SvTYPE (coro) != SVt_PVHV)
		331	croak ("Coro::State object required");
		332
		333	stash = SvSTASH (coro);
		334	if (stash != coro_stash && stash != coro_state_stash)
		335	{
		336	/* very slow, but rare, check */
		337	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		338	croak ("Coro::State object required");
		339	}
		340
		341	mg = CORO_MAGIC (coro);
		342	return (struct coro *)mg->mg_ptr;
		343	}
		344
		345	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		346
248	/* the next two functions merely cache the padlists */	347	/* the next two functions merely cache the padlists */
249	static void	348	static void
250	get_padlist (CV *cv)	349	get_padlist (pTHX_ CV *cv)
251	{	350	{
252	MAGIC *mg = CORO_MAGIC (cv);	351	MAGIC *mg = CORO_MAGIC (cv);
253	AV *av;	352	AV *av;
254		353
255	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	356	else
258	{	357	{
259	#if 0	358	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	359	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	360	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	361	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	362	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	363	SvREFCNT_dec (cp);
265	#else	364	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	365	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	366	#endif
268	}	367	}
269	}	368	}
270		369
271	static void	370	static void
272	put_padlist (CV *cv)	371	put_padlist (pTHX_ CV *cv)
273	{	372	{
274	MAGIC *mg = CORO_MAGIC (cv);	373	MAGIC *mg = CORO_MAGIC (cv);
275	AV *av;	374	AV *av;
276		375
277	if (!mg)	376	if (!mg)
…		…
288	av_extend (av, AvMAX (av) + 1);	387	av_extend (av, AvMAX (av) + 1);
289		388
290	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291	}	390	}
292		391
293	#define SB do {	392	/** load & save, init *******************************************************/
294	#define SE } while (0)
295		393
296	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
297
298	static void	394	static void
299	load_perl (Coro__State c)	395	load_perl (pTHX_ Coro__State c)
300	{	396	{
301	#define VAR(name,type) PL_ ## name = c->name;	397	#define VAR(name,type) PL_ ## name = c->name;
302	# include "state.h"	398	# include "state.h"
303	#undef VAR	399	#undef VAR
304		400
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	401	GvSV (PL_defgv) = c->defsv;
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	402	GvAV (PL_defgv) = c->defav;
307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	403	GvSV (PL_errgv) = c->errsv;
308	if (c->irssv)	404	GvSV (irsgv) = c->irssv_sv;
309	{
310	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
311	SvREFCNT_dec (c->irssv);
312	else
313	{
314	REPLACE_SV (PL_rs, c->irssv);
315	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
316	sv_setsv (c->irssv_sv, PL_rs);
317	}
318	}
319		405
320	{	406	{
321	dSP;	407	dSP;
322	CV *cv;	408	CV *cv;
323		409
324	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
325	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
326	{	412	{
327	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
328	CvDEPTH (cv) = PTR2IV (POPs);	414	CvDEPTH (cv) = PTR2IV (POPs);
329	CvPADLIST (cv) = (AV *)POPs;	415	CvPADLIST (cv) = (AV *)POPs;
330	}	416	}
331		417
332	PUTBACK;	418	PUTBACK;
333	}	419	}
334	}	420	}
335		421
336	static void	422	static void
337	save_perl (Coro__State c)	423	save_perl (pTHX_ Coro__State c)
338	{	424	{
339	{	425	{
340	dSP;	426	dSP;
341	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	431	/*
346	* 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
347	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
348	*/	434	*/
349		435
350	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
352	for (;;)	438	for (;;)
353	{	439	{
354	while (cxix >= 0)	440	while (cxix >= 0)
355	{	441	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
357		443
358	if (CxTYPE (cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
359	{	445	{
360	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
361		447
362	if (CvDEPTH (cv))	448	if (CvDEPTH (cv))
363	{	449	{
364	EXTEND (SP, 3);	450	EXTEND (SP, 3);
365
366	PUSHs ((SV *)CvPADLIST (cv));	451	PUSHs ((SV *)CvPADLIST (cv));
367	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
368	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
369		454
370	CvDEPTH (cv) = 0;	455	CvDEPTH (cv) = 0;
371	get_padlist (cv);	456	get_padlist (aTHX_ cv);
372	}	457	}
373	}	458	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE (cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	459	}
383		460
384	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
385	break;	462	break;
386		463
387	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
388	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
389	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
390	}	467	}
391		468
392	PUTBACK;	469	PUTBACK;
393	}	470	}
394		471
395	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	c->defav = GvAV (PL_defgv);
396	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = DEFSV;
397	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = ERRSV;
398	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	475	c->irssv_sv = GvSV (irsgv);
399		476
400	#define VAR(name,type)c->name = PL_ ## name;	477	#define VAR(name,type)c->name = PL_ ## name;
401	# include "state.h"	478	# include "state.h"
402	#undef VAR	479	#undef VAR
403	}	480	}
…		…
406	* allocate various perl stacks. This is an exact copy	483	* allocate various perl stacks. This is an exact copy
407	* of perl.c:init_stacks, except that it uses less memory	484	* of perl.c:init_stacks, except that it uses less memory
408	* on the (sometimes correct) assumption that coroutines do	485	* on the (sometimes correct) assumption that coroutines do
409	* not usually need a lot of stackspace.	486	* not usually need a lot of stackspace.
410	*/	487	*/
		488	#if CORO_PREFER_PERL_FUNCTIONS
		489	# define coro_init_stacks init_stacks
		490	#else
411	static void	491	static void
412	coro_init_stacks ()	492	coro_init_stacks (pTHX)
413	{	493	{
414	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	494	PL_curstackinfo = new_stackinfo(64, 6);
415	PL_curstackinfo->si_type = PERLSI_MAIN;	495	PL_curstackinfo->si_type = PERLSI_MAIN;
416	PL_curstack = PL_curstackinfo->si_stack;	496	PL_curstack = PL_curstackinfo->si_stack;
417	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
418		498
419	PL_stack_base = AvARRAY(PL_curstack);	499	PL_stack_base = AvARRAY(PL_curstack);
420	PL_stack_sp = PL_stack_base;	500	PL_stack_sp = PL_stack_base;
421	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
422		502
423	New(50,PL_tmps_stack,128,SV*);	503	New(50,PL_tmps_stack,64,SV*);
424	PL_tmps_floor = -1;	504	PL_tmps_floor = -1;
425	PL_tmps_ix = -1;	505	PL_tmps_ix = -1;
426	PL_tmps_max = 128;	506	PL_tmps_max = 64;
427		507
428	New(54,PL_markstack,32,I32);	508	New(54,PL_markstack,16,I32);
429	PL_markstack_ptr = PL_markstack;	509	PL_markstack_ptr = PL_markstack;
430	PL_markstack_max = PL_markstack + 32;	510	PL_markstack_max = PL_markstack + 16;
431		511
432	#ifdef SET_MARK_OFFSET	512	#ifdef SET_MARK_OFFSET
433	SET_MARK_OFFSET;	513	SET_MARK_OFFSET;
434	#endif	514	#endif
435		515
436	New(54,PL_scopestack,32,I32);	516	New(54,PL_scopestack,16,I32);
437	PL_scopestack_ix = 0;	517	PL_scopestack_ix = 0;
438	PL_scopestack_max = 32;	518	PL_scopestack_max = 16;
439		519
440	New(54,PL_savestack,64,ANY);	520	New(54,PL_savestack,64,ANY);
441	PL_savestack_ix = 0;	521	PL_savestack_ix = 0;
442	PL_savestack_max = 64;	522	PL_savestack_max = 64;
443		523
444	#if !PERL_VERSION_ATLEAST (5,9,0)	524	#if !PERL_VERSION_ATLEAST (5,9,0)
445	New(54,PL_retstack,16,OP*);	525	New(54,PL_retstack,4,OP*);
446	PL_retstack_ix = 0;	526	PL_retstack_ix = 0;
447	PL_retstack_max = 16;	527	PL_retstack_max = 4;
448	#endif	528	#endif
449	}	529	}
		530	#endif
450		531
451	/*	532	/*
452	* destroy the stacks, the callchain etc...	533	* destroy the stacks, the callchain etc...
453	*/	534	*/
454	static void	535	static void
455	coro_destroy_stacks ()	536	coro_destroy_stacks (pTHX)
456	{	537	{
457	if (!IN_DESTRUCT)
458	{
459	/* is this ugly, I ask? */
460	LEAVE_SCOPE (0);
461
462	/* sure it is, but more important: is it correct?? :/ */
463	FREETMPS;
464
465	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
466	}
467
468	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
469	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
470		540
471	while (PL_curstackinfo)	541	while (PL_curstackinfo)
472	{	542	{
473	PERL_SI *p = PL_curstackinfo->si_prev;	543	PERL_SI *p = PL_curstackinfo->si_prev;
474		544
475	{ /*D*//*remove*/
476	dSP;
477	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
478	PUTBACK; /* possibly superfluous */
479	}
480
481	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
482	{
483	dounwind (-1);/*D*//*remove*/
484	SvREFCNT_dec (PL_curstackinfo->si_stack);	546	SvREFCNT_dec (PL_curstackinfo->si_stack);
485	}
486		547
487	Safefree (PL_curstackinfo->si_cxstack);	548	Safefree (PL_curstackinfo->si_cxstack);
488	Safefree (PL_curstackinfo);	549	Safefree (PL_curstackinfo);
489	PL_curstackinfo = p;	550	PL_curstackinfo = p;
490	}	551	}
…		…
496	#if !PERL_VERSION_ATLEAST (5,9,0)	557	#if !PERL_VERSION_ATLEAST (5,9,0)
497	Safefree (PL_retstack);	558	Safefree (PL_retstack);
498	#endif	559	#endif
499	}	560	}
500		561
501	static void	562	static size_t
502	setup_coro (struct coro *coro)	563	coro_rss (pTHX_ struct coro *coro)
		564	{
		565	size_t rss = sizeof (*coro);
		566
		567	if (coro->mainstack)
		568	{
		569	if (coro->flags & CF_RUNNING)
		570	{
		571	#define VAR(name,type)coro->name = PL_ ## name;
		572	# include "state.h"
		573	#undef VAR
		574	}
		575
		576	rss += sizeof (coro->curstackinfo);
		577	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		578	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		579	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		580	rss += coro->tmps_max * sizeof (SV *);
		581	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		582	rss += coro->scopestack_max * sizeof (I32);
		583	rss += coro->savestack_max * sizeof (ANY);
		584
		585	#if !PERL_VERSION_ATLEAST (5,9,0)
		586	rss += coro->retstack_max * sizeof (OP *);
		587	#endif
		588	}
		589
		590	return rss;
		591	}
		592
		593	/** coroutine stack handling ************************************************/
		594
		595	static void
		596	coro_setup (pTHX_ struct coro *coro)
503	{	597	{
504	/*	598	/*
505	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
506	*/	600	*/
507
508	coro_init_stacks ();	601	coro_init_stacks (aTHX);
509		602
		603	PL_runops = RUNOPS_DEFAULT;
510	PL_curcop = &PL_compiling;	604	PL_curcop = &PL_compiling;
511	PL_in_eval = EVAL_NULL;	605	PL_in_eval = EVAL_NULL;
		606	PL_comppad = 0;
512	PL_curpm = 0;	607	PL_curpm = 0;
513	PL_localizing = 0;	608	PL_localizing = 0;
514	PL_dirty = 0;	609	PL_dirty = 0;
515	PL_restartop = 0;	610	PL_restartop = 0;
		611
		612	GvSV (PL_defgv) = newSV (0);
		613	GvAV (PL_defgv) = coro->args; coro->args = 0;
		614	GvSV (PL_errgv) = newSV (0);
		615	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		616	PL_rs = newSVsv (GvSV (irsgv));
		617	PL_defoutgv = SvREFCNT_inc (stdoutgv);
516		618
517	{	619	{
518	dSP;	620	dSP;
519	LOGOP myop;	621	LOGOP myop;
520		622
521	SvREFCNT_dec (GvAV (PL_defgv));
522	GvAV (PL_defgv) = coro->args; coro->args = 0;
523
524	Zero (&myop, 1, LOGOP);	623	Zero (&myop, 1, LOGOP);
525	myop.op_next = Nullop;	624	myop.op_next = Nullop;
526	myop.op_flags = OPf_WANT_VOID;	625	myop.op_flags = OPf_WANT_VOID;
527		626
528	PUSHMARK (SP);	627	PUSHMARK (SP);
529	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	628	XPUSHs (av_shift (GvAV (PL_defgv)));
530	PUTBACK;	629	PUTBACK;
531	PL_op = (OP *)&myop;	630	PL_op = (OP *)&myop;
532	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	631	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
533	SPAGAIN;	632	SPAGAIN;
534	}	633	}
535		634
536	ENTER; /* necessary e.g. for dounwind */	635	ENTER; /* necessary e.g. for dounwind */
537	}	636	}
538		637
539	static void	638	static void
		639	coro_destroy (pTHX_ struct coro *coro)
		640	{
		641	if (!IN_DESTRUCT)
		642	{
		643	/* restore all saved variables and stuff */
		644	LEAVE_SCOPE (0);
		645	assert (PL_tmps_floor == -1);
		646
		647	/* free all temporaries */
		648	FREETMPS;
		649	assert (PL_tmps_ix == -1);
		650
		651	/* unwind all extra stacks */
		652	POPSTACK_TO (PL_mainstack);
		653
		654	/* unwind main stack */
		655	dounwind (-1);
		656	}
		657
		658	SvREFCNT_dec (GvSV (PL_defgv));
		659	SvREFCNT_dec (GvAV (PL_defgv));
		660	SvREFCNT_dec (GvSV (PL_errgv));
		661	SvREFCNT_dec (PL_defoutgv);
		662	SvREFCNT_dec (PL_rs);
		663	SvREFCNT_dec (GvSV (irsgv));
		664
		665	SvREFCNT_dec (coro->saved_deffh);
		666	//SvREFCNT_dec (coro->throw);
		667
		668	coro_destroy_stacks (aTHX);
		669	}
		670
		671	static void
540	free_coro_mortal ()	672	free_coro_mortal (pTHX)
541	{	673	{
542	if (coro_mortal)	674	if (coro_mortal)
543	{	675	{
544	SvREFCNT_dec (coro_mortal);	676	SvREFCNT_dec (coro_mortal);
545	coro_mortal = 0;	677	coro_mortal = 0;
546	}	678	}
547	}	679	}
548		680
		681	static int
		682	runops_trace (pTHX)
		683	{
		684	COP *oldcop = 0;
		685	int oldcxix = -2;
		686	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		687	coro_cctx *cctx = coro->cctx;
		688
		689	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		690	{
		691	PERL_ASYNC_CHECK ();
		692
		693	if (cctx->flags & CC_TRACE_ALL)
		694	{
		695	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		696	{
		697	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		698	SV **bot, **top;
		699	AV *av = newAV (); /* return values */
		700	SV **cb;
		701	dSP;
		702
		703	GV *gv = CvGV (cx->blk_sub.cv);
		704	SV *fullname = sv_2mortal (newSV (0));
		705	if (isGV (gv))
		706	gv_efullname3 (fullname, gv, 0);
		707
		708	bot = PL_stack_base + cx->blk_oldsp + 1;
		709	top = cx->blk_gimme == G_ARRAY ? SP + 1
		710	: cx->blk_gimme == G_SCALAR ? bot + 1
		711	: bot;
		712
		713	while (bot < top)
		714	av_push (av, SvREFCNT_inc (*bot++));
		715
		716	PL_runops = RUNOPS_DEFAULT;
		717	ENTER;
		718	SAVETMPS;
		719	EXTEND (SP, 3);
		720	PUSHMARK (SP);
		721	PUSHs (&PL_sv_no);
		722	PUSHs (fullname);
		723	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		724	PUTBACK;
		725	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		726	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		727	SPAGAIN;
		728	FREETMPS;
		729	LEAVE;
		730	PL_runops = runops_trace;
		731	}
		732
		733	if (oldcop != PL_curcop)
		734	{
		735	oldcop = PL_curcop;
		736
		737	if (PL_curcop != &PL_compiling)
		738	{
		739	SV **cb;
		740
		741	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		742	{
		743	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		744
		745	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		746	{
		747	runops_proc_t old_runops = PL_runops;
		748	dSP;
		749	GV *gv = CvGV (cx->blk_sub.cv);
		750	SV *fullname = sv_2mortal (newSV (0));
		751
		752	if (isGV (gv))
		753	gv_efullname3 (fullname, gv, 0);
		754
		755	PL_runops = RUNOPS_DEFAULT;
		756	ENTER;
		757	SAVETMPS;
		758	EXTEND (SP, 3);
		759	PUSHMARK (SP);
		760	PUSHs (&PL_sv_yes);
		761	PUSHs (fullname);
		762	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		766	SPAGAIN;
		767	FREETMPS;
		768	LEAVE;
		769	PL_runops = runops_trace;
		770	}
		771
		772	oldcxix = cxstack_ix;
		773	}
		774
		775	if (cctx->flags & CC_TRACE_LINE)
		776	{
		777	dSP;
		778
		779	PL_runops = RUNOPS_DEFAULT;
		780	ENTER;
		781	SAVETMPS;
		782	EXTEND (SP, 3);
		783	PL_runops = RUNOPS_DEFAULT;
		784	PUSHMARK (SP);
		785	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		786	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		787	PUTBACK;
		788	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		789	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		790	SPAGAIN;
		791	FREETMPS;
		792	LEAVE;
		793	PL_runops = runops_trace;
		794	}
		795	}
		796	}
		797	}
		798	}
		799
		800	TAINT_NOT;
		801	return 0;
		802	}
		803
549	/* inject a fake call to Coro::State::_cctx_init into the execution */	804	/* inject a fake call to Coro::State::_cctx_init into the execution */
		805	/* _cctx_init should be careful, as it could be called at almost any time */
		806	/* during execution of a perl program */
550	static void NOINLINE	807	static void NOINLINE
551	prepare_cctx (coro_cctx *cctx)	808	prepare_cctx (pTHX_ coro_cctx *cctx)
552	{	809	{
553	dSP;	810	dSP;
554	LOGOP myop;	811	LOGOP myop;
		812
		813	PL_top_env = &PL_start_env;
		814
		815	if (cctx->flags & CC_TRACE)
		816	PL_runops = runops_trace;
555		817
556	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
557	myop.op_next = PL_op;	819	myop.op_next = PL_op;
558	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	820	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
559		821
…		…
565	PL_op = (OP *)&myop;	827	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	828	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	829	SPAGAIN;
568	}	830	}
569		831
		832	/*
		833	* this is a _very_ stripped down perl interpreter ;)
		834	*/
570	static void	835	static void
571	coro_run (void *arg)	836	coro_run (void *arg)
572	{	837	{
		838	dTHX;
		839
573	/* coro_run is the alternative tail of transfer(), so unlock here. */	840	/* coro_run is the alternative tail of transfer(), so unlock here. */
574	UNLOCK;	841	UNLOCK;
575		842
576	/*	843	/* we now skip the entersub that lead to transfer() */
577	* this is a _very_ stripped down perl interpreter ;)	844	PL_op = PL_op->op_next;
578	*/
579	PL_top_env = &PL_start_env;
580		845
581	/* inject call to cctx_init */	846	/* inject a fake subroutine call to cctx_init */
582	prepare_cctx ((coro_cctx *)arg);	847	prepare_cctx (aTHX_ (coro_cctx *)arg);
583		848
584	/* somebody will hit me for both perl_run and PL_restartop */	849	/* somebody or something will hit me for both perl_run and PL_restartop */
585	PL_restartop = PL_op;	850	PL_restartop = PL_op;
586	perl_run (PL_curinterp);	851	perl_run (PL_curinterp);
587		852
588	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	853	/*
589	abort ();	854	* If perl-run returns we assume exit() was being called or the coro
		855	* fell off the end, which seems to be the only valid (non-bug)
		856	* reason for perl_run to return. We try to exit by jumping to the
		857	* bootstrap-time "top" top_env, as we cannot restore the "main"
		858	* coroutine as Coro has no such concept
		859	*/
		860	PL_top_env = main_top_env;
		861	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
590	}	862	}
591		863
592	static coro_cctx *	864	static coro_cctx *
593	cctx_new ()	865	cctx_new ()
594	{	866	{
595	coro_cctx *cctx;	867	coro_cctx *cctx;
		868	void *stack_start;
		869	size_t stack_size;
596		870
597	++cctx_count;	871	++cctx_count;
598		872
599	Newz (0, cctx, 1, coro_cctx);	873	Newz (0, cctx, 1, coro_cctx);
600		874
601	#if HAVE_MMAP	875	#if HAVE_MMAP
602		876
603	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
604	/* mmap supposedly does allocate-on-write for us */	878	/* mmap supposedly does allocate-on-write for us */
605	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	879	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
606		880
607	if (cctx->sptr == (void *)-1)	881	if (cctx->sptr != (void *)-1)
608	{
609	perror ("FATAL: unable to mmap stack for coroutine");
610	_exit (EXIT_FAILURE);
611	}	882	{
612
613	# if STACKGUARD	883	# if CORO_STACKGUARD
614	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	884	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
615	# endif	885	# endif
		886	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		887	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		888	cctx->flags |= CC_MAPPED;
		889	}
		890	else
		891	#endif
		892	{
		893	cctx->ssize = coro_stacksize * (long)sizeof (long);
		894	New (0, cctx->sptr, coro_stacksize, long);
616		895
617	#else
618
619	cctx->ssize = STACKSIZE * (long)sizeof (long);
620	New (0, cctx->sptr, STACKSIZE, long);
621
622	if (!cctx->sptr)	896	if (!cctx->sptr)
623	{	897	{
624	perror ("FATAL: unable to malloc stack for coroutine");	898	perror ("FATAL: unable to allocate stack for coroutine");
625	_exit (EXIT_FAILURE);	899	_exit (EXIT_FAILURE);
626	}	900	}
627		901
628	#endif	902	stack_start = cctx->sptr;
		903	stack_size = cctx->ssize;
		904	}
629		905
630	#if USE_VALGRIND	906	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
631	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
632	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
633	cctx->ssize + (char *)cctx->sptr
634	);
635	#endif
636
637	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	907	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
638		908
639	return cctx;	909	return cctx;
640	}	910	}
641		911
642	static void	912	static void
…		…
645	if (!cctx)	915	if (!cctx)
646	return;	916	return;
647		917
648	--cctx_count;	918	--cctx_count;
649		919
650	#if USE_VALGRIND	920	#if CORO_USE_VALGRIND
651	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
652	#endif	922	#endif
653		923
654	#if HAVE_MMAP	924	#if HAVE_MMAP
		925	if (cctx->flags & CC_MAPPED)
655	munmap (cctx->sptr, cctx->ssize);	926	munmap (cctx->sptr, cctx->ssize);
656	#else	927	else
		928	#endif
657	Safefree (cctx->sptr);	929	Safefree (cctx->sptr);
658	#endif
659		930
660	Safefree (cctx);	931	Safefree (cctx);
661	}	932	}
662		933
663	static coro_cctx *	934	static coro_cctx *
664	cctx_get ()	935	cctx_get (pTHX)
665	{	936	{
666	coro_cctx *cctx;
667
668	if (cctx_first)	937	while (cctx_first)
669	{	938	{
670	cctx = cctx_first;	939	coro_cctx *cctx = cctx_first;
671	cctx_first = cctx->next;	940	cctx_first = cctx->next;
672	--cctx_idle;	941	--cctx_idle;
673	}	942
674	else	943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
675	{	944	return cctx;
676	cctx = cctx_new ();	945
677	PL_op = PL_op->op_next;	946	cctx_destroy (cctx);
678	}	947	}
679		948
680	return cctx;	949	return cctx_new ();
681	}	950	}
682		951
683	static void	952	static void
684	cctx_put (coro_cctx *cctx)	953	cctx_put (coro_cctx *cctx)
685	{	954	{
…		…
688	{	957	{
689	coro_cctx *first = cctx_first;	958	coro_cctx *first = cctx_first;
690	cctx_first = first->next;	959	cctx_first = first->next;
691	--cctx_idle;	960	--cctx_idle;
692		961
693	assert (!first->inuse);
694	cctx_destroy (first);	962	cctx_destroy (first);
695	}	963	}
696		964
697	++cctx_idle;	965	++cctx_idle;
698	cctx->next = cctx_first;	966	cctx->next = cctx_first;
699	cctx_first = cctx;	967	cctx_first = cctx;
700	}	968	}
701		969
702	/* never call directly, always through the coro_state_transfer global variable */	970	/** coroutine switching *****************************************************/
		971
703	static void NOINLINE	972	static void NOINLINE
		973	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		974	{
		975	if (prev != next)
		976	{
		977	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		978	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		979
		980	if (next->flags & CF_RUNNING)
		981	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		982
		983	if (next->flags & CF_DESTROYED)
		984	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		985
		986	if (PL_lex_state != LEX_NOTPARSING)
		987	croak ("Coro::State::transfer called while parsing, but this is not supported");
		988	}
		989	}
		990
		991	/* always use the TRANSFER macro */
		992	static void NOINLINE
704	transfer (struct coro *prev, struct coro *next)	993	transfer (pTHX_ struct coro *prev, struct coro *next)
705	{	994	{
706	dSTACKLEVEL;	995	dSTACKLEVEL;
707		996
708	/* sometimes transfer is only called to set idle_sp */	997	/* sometimes transfer is only called to set idle_sp */
709	if (!next)	998	if (!next)
710	{	999	{
711	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1000	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
712	assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */	1001	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
713	}	1002	}
714	else if (prev != next)	1003	else if (prev != next)
715	{	1004	{
716	coro_cctx *prev__cctx;	1005	coro_cctx *prev__cctx;
717		1006
718	if (prev->flags & CF_NEW)	1007	if (prev->flags & CF_NEW)
719	{	1008	{
720	/* create a new empty context */	1009	/* create a new empty context */
721	Newz (0, prev->cctx, 1, coro_cctx);	1010	Newz (0, prev->cctx, 1, coro_cctx);
722	prev->cctx->inuse = 1;
723	prev->flags &= ~CF_NEW;	1011	prev->flags &= ~CF_NEW;
724	prev->flags |= CF_RUNNING;	1012	prev->flags |= CF_RUNNING;
725	}	1013	}
726
727	/*TODO: must not croak here */
728	if (!prev->flags & CF_RUNNING)
729	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
730
731	if (next->flags & CF_RUNNING)
732	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
733		1014
734	prev->flags &= ~CF_RUNNING;	1015	prev->flags &= ~CF_RUNNING;
735	next->flags |= CF_RUNNING;	1016	next->flags |= CF_RUNNING;
736		1017
737	LOCK;	1018	LOCK;
…		…
739	if (next->flags & CF_NEW)	1020	if (next->flags & CF_NEW)
740	{	1021	{
741	/* need to start coroutine */	1022	/* need to start coroutine */
742	next->flags &= ~CF_NEW;	1023	next->flags &= ~CF_NEW;
743	/* first get rid of the old state */	1024	/* first get rid of the old state */
744	save_perl (prev);	1025	save_perl (aTHX_ prev);
745	/* setup coroutine call */	1026	/* setup coroutine call */
746	setup_coro (next);	1027	coro_setup (aTHX_ next);
747	/* need a new stack */
748	assert (!next->cctx);
749	}	1028	}
750	else	1029	else
751	{	1030	{
752	/* coroutine already started */	1031	/* coroutine already started */
753	save_perl (prev);	1032	save_perl (aTHX_ prev);
754	load_perl (next);	1033	load_perl (aTHX_ next);
755	}	1034	}
756		1035
757	prev__cctx = prev->cctx;	1036	prev__cctx = prev->cctx;
758		1037
759	/* possibly "free" the cctx */	1038	/* possibly "free" the cctx */
760	if (prev__cctx->idle_sp == STACKLEVEL)	1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
761	{	1040	{
762	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1041	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
763	assert (PL_top_env == prev__cctx->top_env);	1042	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
764		1043
765	prev->cctx = 0;	1044	prev->cctx = 0;
766		1045
767	cctx_put (prev__cctx);	1046	cctx_put (prev__cctx);
768	prev__cctx->inuse = 0;
769	}	1047	}
770		1048
		1049	++next->usecount;
		1050
771	if (!next->cctx)	1051	if (!next->cctx)
772	{
773	next->cctx = cctx_get ();	1052	next->cctx = cctx_get (aTHX);
774	assert (!next->cctx->inuse);
775	next->cctx->inuse = 1;
776	}
777		1053
778	if (prev__cctx != next->cctx)	1054	if (prev__cctx != next->cctx)
779	{	1055	{
780	prev__cctx->top_env = PL_top_env;	1056	prev__cctx->top_env = PL_top_env;
781	PL_top_env = next->cctx->top_env;	1057	PL_top_env = next->cctx->top_env;
782	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
783	}	1059	}
784		1060
785	free_coro_mortal ();	1061	free_coro_mortal (aTHX);
786
787	UNLOCK;	1062	UNLOCK;
788	}	1063	}
789	}	1064	}
790		1065
791	struct transfer_args	1066	struct transfer_args
792	{	1067	{
793	struct coro *prev, *next;	1068	struct coro *prev, *next;
794	};	1069	};
795		1070
796	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
797		1073
		1074	/** high level stuff ********************************************************/
		1075
798	static void	1076	static int
799	coro_state_destroy (struct coro *coro)	1077	coro_state_destroy (pTHX_ struct coro *coro)
800	{	1078	{
801	if (coro->refcnt--)	1079	if (coro->flags & CF_DESTROYED)
802	return;	1080	return 0;
		1081
		1082	coro->flags |= CF_DESTROYED;
		1083
		1084	if (coro->flags & CF_READY)
		1085	{
		1086	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1087	/* alternative: look through all ready queues and remove the coro */
		1088	LOCK;
		1089	--coro_nready;
		1090	UNLOCK;
		1091	}
		1092	else
		1093	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
803		1094
804	if (coro->mainstack && coro->mainstack != main_mainstack)	1095	if (coro->mainstack && coro->mainstack != main_mainstack)
805	{	1096	{
806	struct coro temp;	1097	struct coro temp;
807	Zero (&temp, 1, struct coro);
808	temp.save = CORO_SAVE_ALL;
809		1098
810	if (coro->flags & CF_RUNNING)	1099	if (coro->flags & CF_RUNNING)
811	croak ("FATAL: tried to destroy currently running coroutine");	1100	croak ("FATAL: tried to destroy currently running coroutine");
812		1101
813	save_perl (&temp);	1102	save_perl (aTHX_ &temp);
814	load_perl (coro);	1103	load_perl (aTHX_ coro);
815		1104
816	coro_destroy_stacks ();	1105	coro_destroy (aTHX_ coro);
817		1106
818	load_perl (&temp); /* this will get rid of defsv etc.. */	1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
819		1108
820	coro->mainstack = 0;	1109	coro->mainstack = 0;
821	}	1110	}
822		1111
823	cctx_destroy (coro->cctx);	1112	cctx_destroy (coro->cctx);
824	SvREFCNT_dec (coro->args);	1113	SvREFCNT_dec (coro->args);
825	Safefree (coro);	1114
		1115	if (coro->next) coro->next->prev = coro->prev;
		1116	if (coro->prev) coro->prev->next = coro->next;
		1117	if (coro == coro_first) coro_first = coro->next;
		1118
		1119	return 1;
826	}	1120	}
827		1121
828	static int	1122	static int
829	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1123	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
830	{	1124	{
831	struct coro *coro = (struct coro *)mg->mg_ptr;	1125	struct coro *coro = (struct coro *)mg->mg_ptr;
832	mg->mg_ptr = 0;	1126	mg->mg_ptr = 0;
833		1127
		1128	coro->hv = 0;
		1129
		1130	if (--coro->refcnt < 0)
		1131	{
834	coro_state_destroy (coro);	1132	coro_state_destroy (aTHX_ coro);
		1133	Safefree (coro);
		1134	}
835		1135
836	return 0;	1136	return 0;
837	}	1137	}
838		1138
839	static int	1139	static int
…		…
846	return 0;	1146	return 0;
847	}	1147	}
848		1148
849	static MGVTBL coro_state_vtbl = {	1149	static MGVTBL coro_state_vtbl = {
850	0, 0, 0, 0,	1150	0, 0, 0, 0,
851	coro_state_clear,	1151	coro_state_free,
852	0,	1152	0,
853	#ifdef MGf_DUP	1153	#ifdef MGf_DUP
854	coro_state_dup,	1154	coro_state_dup,
855	#else	1155	#else
856	# define MGf_DUP 0	1156	# define MGf_DUP 0
857	#endif	1157	#endif
858	};	1158	};
859		1159
860	static struct coro *
861	SvSTATE (SV *coro)
862	{
863	HV *stash;
864	MAGIC *mg;
865
866	if (SvROK (coro))
867	coro = SvRV (coro);
868
869	stash = SvSTASH (coro);
870	if (stash != coro_stash && stash != coro_state_stash)
871	{
872	/* very slow, but rare, check */
873	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
874	croak ("Coro::State object required");
875	}
876
877	mg = SvMAGIC (coro);
878	assert (mg->mg_type == PERL_MAGIC_ext);
879	return (struct coro *)mg->mg_ptr;
880	}
881
882	static void	1160	static void
883	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1161	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
884	{	1162	{
885	ta->prev = SvSTATE (prev_sv);	1163	ta->prev = SvSTATE (prev_sv);
886	ta->next = SvSTATE (next_sv);	1164	ta->next = SvSTATE (next_sv);
		1165	TRANSFER_CHECK (*ta);
887	}	1166	}
888		1167
889	static void	1168	static void
890	api_transfer (SV *prev_sv, SV *next_sv)	1169	api_transfer (SV *prev_sv, SV *next_sv)
891	{	1170	{
		1171	dTHX;
892	struct transfer_args ta;	1172	struct transfer_args ta;
893		1173
894	prepare_transfer (&ta, prev_sv, next_sv);	1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
895	TRANSFER (ta);	1175	TRANSFER (ta);
896	}	1176	}
897		1177
898	static int
899	api_save (SV *coro_sv, int new_save)
900	{
901	struct coro *coro = SvSTATE (coro_sv);
902	int old_save = coro->save;
903
904	if (new_save >= 0)
905	coro->save = new_save;
906
907	return old_save;
908	}
909
910	/** Coro ********************************************************************/	1178	/** Coro ********************************************************************/
911		1179
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static SV *coro_current;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1180	static void
925	coro_enq (SV *coro_sv)	1181	coro_enq (pTHX_ SV *coro_sv)
926	{	1182	{
927	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1183	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;
929	}	1184	}
930		1185
931	static SV *	1186	static SV *
932	coro_deq (int min_prio)	1187	coro_deq (pTHX_ int min_prio)
933	{	1188	{
934	int prio = PRIO_MAX - PRIO_MIN;	1189	int prio = PRIO_MAX - PRIO_MIN;
935		1190
936	min_prio -= PRIO_MIN;	1191	min_prio -= PRIO_MIN;
937	if (min_prio < 0)	1192	if (min_prio < 0)
938	min_prio = 0;	1193	min_prio = 0;
939		1194
940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
941	if (AvFILLp (coro_ready [prio]) >= 0)	1196	if (AvFILLp (coro_ready [prio]) >= 0)
942	{
943	coro_nready--;
944	return av_shift (coro_ready [prio]);	1197	return av_shift (coro_ready [prio]);
945	}
946		1198
947	return 0;	1199	return 0;
948	}	1200	}
949		1201
950	static int	1202	static int
951	api_ready (SV *coro_sv)	1203	api_ready (SV *coro_sv)
952	{	1204	{
		1205	dTHX;
953	struct coro *coro;	1206	struct coro *coro;
954		1207
955	if (SvROK (coro_sv))	1208	if (SvROK (coro_sv))
956	coro_sv = SvRV (coro_sv);	1209	coro_sv = SvRV (coro_sv);
957		1210
958	coro = SvSTATE (coro_sv);	1211	coro = SvSTATE (coro_sv);
959		1212
960	if (coro->flags & CF_READY)	1213	if (coro->flags & CF_READY)
961	return 0;	1214	return 0;
962		1215
963	#if 0 /* this is actually harmless */
964	if (coro->flags & CF_RUNNING)
965	croak ("Coro::ready called on currently running coroutine");
966	#endif
967
968	coro->flags |= CF_READY;	1216	coro->flags |= CF_READY;
969		1217
970	LOCK;	1218	LOCK;
971	coro_enq (SvREFCNT_inc (coro_sv));	1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1220	++coro_nready;
972	UNLOCK;	1221	UNLOCK;
973		1222
974	return 1;	1223	return 1;
975	}	1224	}
976		1225
977	static int	1226	static int
978	api_is_ready (SV *coro_sv)	1227	api_is_ready (SV *coro_sv)
979	{	1228	{
		1229	dTHX;
980	return !!SvSTATE (coro_sv)->flags & CF_READY;	1230	return !!(SvSTATE (coro_sv)->flags & CF_READY);
981	}	1231	}
982		1232
983	static void	1233	static void
984	prepare_schedule (struct transfer_args *ta)	1234	prepare_schedule (pTHX_ struct transfer_args *ta)
985	{	1235	{
986	SV *prev, *next;	1236	SV *prev_sv, *next_sv;
987		1237
988	for (;;)	1238	for (;;)
989	{	1239	{
990	LOCK;	1240	LOCK;
991	next = coro_deq (PRIO_MIN);	1241	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1242
		1243	/* nothing to schedule: call the idle handler */
		1244	if (!next_sv)
		1245	{
		1246	dSP;
		1247	UNLOCK;
		1248
		1249	ENTER;
		1250	SAVETMPS;
		1251
		1252	PUSHMARK (SP);
		1253	PUTBACK;
		1254	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1255
		1256	FREETMPS;
		1257	LEAVE;
		1258	continue;
		1259	}
		1260
		1261	ta->next = SvSTATE (next_sv);
		1262
		1263	/* cannot transfer to destroyed coros, skip and look for next */
		1264	if (ta->next->flags & CF_DESTROYED)
		1265	{
		1266	UNLOCK;
		1267	SvREFCNT_dec (next_sv);
		1268	/* coro_nready is already taken care of by destroy */
		1269	continue;
		1270	}
		1271
		1272	--coro_nready;
992	UNLOCK;	1273	UNLOCK;
993
994	if (next)
995	break;	1274	break;
996
997	{
998	dSP;
999
1000	ENTER;
1001	SAVETMPS;
1002
1003	PUSHMARK (SP);
1004	PUTBACK;
1005	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1006
1007	FREETMPS;
1008	LEAVE;
1009	}	1275	}
1010	}
1011
1012	prev = SvRV (coro_current);
1013	SvRV_set (coro_current, next);
1014		1276
1015	/* free this only after the transfer */	1277	/* free this only after the transfer */
1016	LOCK;	1278	prev_sv = SvRV (coro_current);
1017	free_coro_mortal ();
1018	UNLOCK;
1019	coro_mortal = prev;
1020
1021	assert (!SvROK(prev));//D
1022	assert (!SvROK(next));//D
1023
1024	ta->prev = SvSTATE (prev);	1279	ta->prev = SvSTATE (prev_sv);
1025	ta->next = SvSTATE (next);	1280	TRANSFER_CHECK (*ta);
1026
1027	assert (ta->next->flags & CF_READY);	1281	assert (ta->next->flags & CF_READY);
1028	ta->next->flags &= ~CF_READY;	1282	ta->next->flags &= ~CF_READY;
1029	}	1283	SvRV_set (coro_current, next_sv);
1030		1284
		1285	LOCK;
		1286	free_coro_mortal (aTHX);
		1287	coro_mortal = prev_sv;
		1288	UNLOCK;
		1289	}
		1290
1031	static void	1291	static void
1032	prepare_cede (struct transfer_args *ta)	1292	prepare_cede (pTHX_ struct transfer_args *ta)
1033	{	1293	{
1034	api_ready (coro_current);	1294	api_ready (coro_current);
1035
1036	prepare_schedule (ta);	1295	prepare_schedule (aTHX_ ta);
		1296	}
		1297
		1298	static int
		1299	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1300	{
		1301	if (coro_nready)
		1302	{
		1303	SV *prev = SvRV (coro_current);
		1304	prepare_schedule (aTHX_ ta);
		1305	api_ready (prev);
		1306	return 1;
		1307	}
		1308	else
		1309	return 0;
1037	}	1310	}
1038		1311
1039	static void	1312	static void
1040	api_schedule (void)	1313	api_schedule (void)
1041	{	1314	{
		1315	dTHX;
1042	struct transfer_args ta;	1316	struct transfer_args ta;
1043		1317
1044	prepare_schedule (&ta);	1318	prepare_schedule (aTHX_ &ta);
1045	TRANSFER (ta);	1319	TRANSFER (ta);
1046	}	1320	}
1047		1321
1048	static void	1322	static int
1049	api_cede (void)	1323	api_cede (void)
1050	{	1324	{
		1325	dTHX;
1051	struct transfer_args ta;	1326	struct transfer_args ta;
1052		1327
1053	prepare_cede (&ta);	1328	prepare_cede (aTHX_ &ta);
		1329
		1330	if (ta.prev != ta.next)
		1331	{
1054	TRANSFER (ta);	1332	TRANSFER (ta);
		1333	return 1;
		1334	}
		1335	else
		1336	return 0;
1055	}	1337	}
1056		1338
		1339	static int
		1340	api_cede_notself (void)
		1341	{
		1342	dTHX;
		1343	struct transfer_args ta;
		1344
		1345	if (prepare_cede_notself (aTHX_ &ta))
		1346	{
		1347	TRANSFER (ta);
		1348	return 1;
		1349	}
		1350	else
		1351	return 0;
		1352	}
		1353
		1354	static void
		1355	api_trace (SV *coro_sv, int flags)
		1356	{
		1357	dTHX;
		1358	struct coro *coro = SvSTATE (coro_sv);
		1359
		1360	if (flags & CC_TRACE)
		1361	{
		1362	if (!coro->cctx)
		1363	coro->cctx = cctx_new ();
		1364	else if (!(coro->cctx->flags & CC_TRACE))
		1365	croak ("cannot enable tracing on coroutine with custom stack");
		1366
		1367	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1368	}
		1369	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1370	{
		1371	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1372
		1373	if (coro->flags & CF_RUNNING)
		1374	PL_runops = RUNOPS_DEFAULT;
		1375	else
		1376	coro->runops = RUNOPS_DEFAULT;
		1377	}
		1378	}
		1379
1057	MODULE = Coro::State PACKAGE = Coro::State	1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1058		1381
1059	PROTOTYPES: DISABLE	1382	PROTOTYPES: DISABLE
1060		1383
1061	BOOT:	1384	BOOT:
1062	{	1385	{
1063	#ifdef USE_ITHREADS	1386	#ifdef USE_ITHREADS
1064	MUTEX_INIT (&coro_mutex);	1387	MUTEX_INIT (&coro_mutex);
1065	#endif	1388	#endif
1066	BOOT_PAGESIZE;	1389	BOOT_PAGESIZE;
1067		1390
		1391	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1392	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1393
1068	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1394	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1069		1395
		1396	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1397	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1070	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1398	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1071	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1072	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1073	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1074	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1399	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1075		1400
1076	main_mainstack = PL_mainstack;	1401	main_mainstack = PL_mainstack;
		1402	main_top_env = PL_top_env;
		1403
		1404	while (main_top_env->je_prev)
		1405	main_top_env = main_top_env->je_prev;
1077		1406
1078	coroapi.ver = CORO_API_VERSION;	1407	coroapi.ver = CORO_API_VERSION;
1079	coroapi.transfer = api_transfer;	1408	coroapi.transfer = api_transfer;
1080		1409
1081	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1410	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1088	struct coro *coro;	1417	struct coro *coro;
1089	HV *hv;	1418	HV *hv;
1090	int i;	1419	int i;
1091		1420
1092	Newz (0, coro, 1, struct coro);	1421	Newz (0, coro, 1, struct coro);
1093	coro->args = newAV ();	1422	coro->args = newAV ();
1094	coro->save = CORO_SAVE_ALL;
1095	coro->flags = CF_NEW;	1423	coro->flags = CF_NEW;
1096		1424
		1425	if (coro_first) coro_first->prev = coro;
		1426	coro->next = coro_first;
		1427	coro_first = coro;
		1428
1097	hv = newHV ();	1429	coro->hv = hv = newHV ();
1098	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1430	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1099	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1431	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1100		1432
1101	for (i = 1; i < items; i++)	1433	for (i = 1; i < items; i++)
1102	av_push (coro->args, newSVsv (ST (i)));	1434	av_push (coro->args, newSVsv (ST (i)));
1103	}	1435	}
1104	OUTPUT:	1436	OUTPUT:
1105	RETVAL	1437	RETVAL
1106		1438
1107	int	1439	# these not obviously related functions are all rolled into the same xs
1108	save (SV *coro, int new_save = -1)	1440	# function to increase chances that they all will call transfer with the same
1109	CODE:	1441	# stack offset
1110	RETVAL = api_save (coro, new_save);
1111	OUTPUT:
1112	RETVAL
1113
1114	void	1442	void
1115	_set_stacklevel (...)	1443	_set_stacklevel (...)
1116	ALIAS:	1444	ALIAS:
1117	Coro::State::transfer = 1	1445	Coro::State::transfer = 1
1118	Coro::schedule = 2	1446	Coro::schedule = 2
1119	Coro::cede = 3	1447	Coro::cede = 3
		1448	Coro::cede_notself = 4
1120	CODE:	1449	CODE:
1121	{	1450	{
1122	struct transfer_args ta;	1451	struct transfer_args ta;
1123		1452
1124	switch (ix)	1453	switch (ix)
…		…
1130		1459
1131	case 1:	1460	case 1:
1132	if (items != 2)	1461	if (items != 2)
1133	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1462	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1134		1463
1135	prepare_transfer (&ta, ST (0), ST (1));	1464	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1136	break;	1465	break;
1137		1466
1138	case 2:	1467	case 2:
1139	prepare_schedule (&ta);	1468	prepare_schedule (aTHX_ &ta);
1140	break;	1469	break;
1141		1470
1142	case 3:	1471	case 3:
1143	prepare_cede (&ta);	1472	prepare_cede (aTHX_ &ta);
		1473	break;
		1474
		1475	case 4:
		1476	if (!prepare_cede_notself (aTHX_ &ta))
		1477	XSRETURN_EMPTY;
		1478
1144	break;	1479	break;
1145	}	1480	}
1146		1481
		1482	BARRIER;
1147	TRANSFER (ta);	1483	TRANSFER (ta);
1148	}
1149		1484
1150	void	1485	if (GIMME_V != G_VOID && ta.next != ta.prev)
1151	_clone_state_from (SV *dst, SV *src)	1486	XSRETURN_YES;
		1487	}
		1488
		1489	bool
		1490	_destroy (SV *coro_sv)
1152	CODE:	1491	CODE:
1153	{	1492	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1154	struct coro *coro_src = SvSTATE (src);	1493	OUTPUT:
1155		1494	RETVAL
1156	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1157
1158	++coro_src->refcnt;
1159	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1160	}
1161		1495
1162	void	1496	void
1163	_exit (code)	1497	_exit (code)
1164	int code	1498	int code
1165	PROTOTYPE: $	1499	PROTOTYPE: $
1166	CODE:	1500	CODE:
1167	_exit (code);	1501	_exit (code);
1168		1502
1169	int	1503	int
		1504	cctx_stacksize (int new_stacksize = 0)
		1505	CODE:
		1506	RETVAL = coro_stacksize;
		1507	if (new_stacksize)
		1508	coro_stacksize = new_stacksize;
		1509	OUTPUT:
		1510	RETVAL
		1511
		1512	int
1170	cctx_count ()	1513	cctx_count ()
1171	CODE:	1514	CODE:
1172	RETVAL = cctx_count;	1515	RETVAL = cctx_count;
1173	OUTPUT:	1516	OUTPUT:
1174	RETVAL	1517	RETVAL
…		…
1178	CODE:	1521	CODE:
1179	RETVAL = cctx_idle;	1522	RETVAL = cctx_idle;
1180	OUTPUT:	1523	OUTPUT:
1181	RETVAL	1524	RETVAL
1182		1525
		1526	void
		1527	list ()
		1528	PPCODE:
		1529	{
		1530	struct coro *coro;
		1531	for (coro = coro_first; coro; coro = coro->next)
		1532	if (coro->hv)
		1533	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1534	}
		1535
		1536	void
		1537	call (Coro::State coro, SV *coderef)
		1538	ALIAS:
		1539	eval = 1
		1540	CODE:
		1541	{
		1542	if (coro->mainstack)
		1543	{
		1544	struct coro temp;
		1545	Zero (&temp, 1, struct coro);
		1546
		1547	if (!(coro->flags & CF_RUNNING))
		1548	{
		1549	save_perl (aTHX_ &temp);
		1550	load_perl (aTHX_ coro);
		1551	}
		1552
		1553	{
		1554	dSP;
		1555	ENTER;
		1556	SAVETMPS;
		1557	PUSHMARK (SP);
		1558	PUTBACK;
		1559	if (ix)
		1560	eval_sv (coderef, 0);
		1561	else
		1562	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1563	SPAGAIN;
		1564	FREETMPS;
		1565	LEAVE;
		1566	PUTBACK;
		1567	}
		1568
		1569	if (!(coro->flags & CF_RUNNING))
		1570	{
		1571	save_perl (aTHX_ coro);
		1572	load_perl (aTHX_ &temp);
		1573	}
		1574	}
		1575	}
		1576
		1577	SV *
		1578	is_ready (Coro::State coro)
		1579	PROTOTYPE: $
		1580	ALIAS:
		1581	is_ready = CF_READY
		1582	is_running = CF_RUNNING
		1583	is_new = CF_NEW
		1584	is_destroyed = CF_DESTROYED
		1585	CODE:
		1586	RETVAL = boolSV (coro->flags & ix);
		1587	OUTPUT:
		1588	RETVAL
		1589
		1590	void
		1591	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1592
		1593	SV *
		1594	has_stack (Coro::State coro)
		1595	PROTOTYPE: $
		1596	CODE:
		1597	RETVAL = boolSV (!!coro->cctx);
		1598	OUTPUT:
		1599	RETVAL
		1600
		1601	int
		1602	is_traced (Coro::State coro)
		1603	PROTOTYPE: $
		1604	CODE:
		1605	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1606	OUTPUT:
		1607	RETVAL
		1608
		1609	IV
		1610	rss (Coro::State coro)
		1611	PROTOTYPE: $
		1612	ALIAS:
		1613	usecount = 1
		1614	CODE:
		1615	switch (ix)
		1616	{
		1617	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1618	case 1: RETVAL = coro->usecount; break;
		1619	}
		1620	OUTPUT:
		1621	RETVAL
		1622
		1623
1183	MODULE = Coro::State PACKAGE = Coro	1624	MODULE = Coro::State PACKAGE = Coro
1184		1625
1185	BOOT:	1626	BOOT:
1186	{	1627	{
1187	int i;	1628	int i;
		1629
		1630	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1631	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1632	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1633
		1634	coro_current = get_sv ("Coro::current", FALSE);
		1635	SvREADONLY_on (coro_current);
1188		1636
1189	coro_stash = gv_stashpv ("Coro", TRUE);	1637	coro_stash = gv_stashpv ("Coro", TRUE);
1190		1638
1191	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1639	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1192	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1640	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1193	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1641	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1194	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1642	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1195	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1643	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1196	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1644	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1197		1645
1198	coro_current = get_sv ("Coro::current", FALSE);
1199	SvREADONLY_on (coro_current);
1200
1201	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1646	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1202	coro_ready[i] = newAV ();	1647	coro_ready[i] = newAV ();
1203		1648
1204	{	1649	{
1205	SV *sv = perl_get_sv("Coro::API", 1);	1650	SV *sv = perl_get_sv("Coro::API", 1);
1206		1651
1207	coroapi.schedule = api_schedule;	1652	coroapi.schedule = api_schedule;
1208	coroapi.save = api_save;
1209	coroapi.cede = api_cede;	1653	coroapi.cede = api_cede;
		1654	coroapi.cede_notself = api_cede_notself;
1210	coroapi.ready = api_ready;	1655	coroapi.ready = api_ready;
1211	coroapi.is_ready = api_is_ready;	1656	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1657	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1658	coroapi.current = coro_current;
1214		1659
1215	GCoroAPI = &coroapi;	1660	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1661	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1662	SvREADONLY_on (sv);
1218	}	1663	}
…		…
1234	RETVAL = coro->prio;	1679	RETVAL = coro->prio;
1235		1680
1236	if (items > 1)	1681	if (items > 1)
1237	{	1682	{
1238	if (ix)	1683	if (ix)
1239	newprio += coro->prio;	1684	newprio = coro->prio - newprio;
1240		1685
1241	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1686	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1242	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1687	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1243		1688
1244	coro->prio = newprio;	1689	coro->prio = newprio;
1245	}	1690	}
1246	}	1691	}
		1692	OUTPUT:
		1693	RETVAL
1247		1694
1248	SV *	1695	SV *
1249	ready (SV *self)	1696	ready (SV *self)
1250	PROTOTYPE: $	1697	PROTOTYPE: $
1251	CODE:	1698	CODE:
1252	RETVAL = boolSV (api_ready (self));	1699	RETVAL = boolSV (api_ready (self));
1253	OUTPUT:	1700	OUTPUT:
1254	RETVAL	1701	RETVAL
1255		1702
1256	SV *
1257	is_ready (SV *self)
1258	PROTOTYPE: $
1259	CODE:
1260	RETVAL = boolSV (api_is_ready (self));
1261	OUTPUT:
1262	RETVAL
1263
1264	int	1703	int
1265	nready (...)	1704	nready (...)
1266	PROTOTYPE:	1705	PROTOTYPE:
1267	CODE:	1706	CODE:
1268	RETVAL = coro_nready;	1707	RETVAL = coro_nready;
1269	OUTPUT:	1708	OUTPUT:
1270	RETVAL	1709	RETVAL
1271		1710
		1711	# for async_pool speedup
		1712	void
		1713	_pool_1 (SV *cb)
		1714	CODE:
		1715	{
		1716	struct coro *coro = SvSTATE (coro_current);
		1717	HV *hv = (HV *)SvRV (coro_current);
		1718	AV *defav = GvAV (PL_defgv);
		1719	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1720	AV *invoke_av;
		1721	int i, len;
		1722
		1723	if (!invoke)
		1724	croak ("\3terminate\2\n");
		1725
		1726	SvREFCNT_dec (coro->saved_deffh);
		1727	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1728
		1729	hv_store (hv, "desc", sizeof ("desc") - 1,
		1730	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1731
		1732	invoke_av = (AV *)SvRV (invoke);
		1733	len = av_len (invoke_av);
		1734
		1735	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1736
		1737	if (len > 0)
		1738	{
		1739	av_fill (defav, len - 1);
		1740	for (i = 0; i < len; ++i)
		1741	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1742	}
		1743
		1744	SvREFCNT_dec (invoke);
		1745	}
		1746
		1747	void
		1748	_pool_2 (SV *cb)
		1749	CODE:
		1750	{
		1751	struct coro *coro = SvSTATE (coro_current);
		1752
		1753	sv_setsv (cb, &PL_sv_undef);
		1754
		1755	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1756	coro->saved_deffh = 0;
		1757
		1758	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1759	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1760	croak ("\3terminate\2\n");
		1761
		1762	av_clear (GvAV (PL_defgv));
		1763	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1764	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1765
		1766	coro->prio = 0;
		1767
		1768	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1769	api_trace (coro_current, 0);
		1770
		1771	av_push (av_async_pool, newSVsv (coro_current));
		1772	}
		1773
		1774
1272	MODULE = Coro::State PACKAGE = Coro::AIO	1775	MODULE = Coro::State PACKAGE = Coro::AIO
1273		1776
1274	SV *	1777	SV *
1275	_get_state ()	1778	_get_state ()
1276	CODE:	1779	CODE:

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