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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.121 by root, Sat Dec 2 20:40:25 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		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	/* 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. */
80	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
82		105
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		107
85	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	109	# define attribute(x) __attribute__(x)
		110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	111	#else
88	# define attribute(x)	112	# define attribute(x)
		113	# define BARRIER
89	#endif	114	#endif
90		115
91	#define NOINLINE attribute ((noinline))	116	#define NOINLINE attribute ((noinline))
92		117
93	#include "CoroAPI.h"	118	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		119
97	#ifdef USE_ITHREADS	120	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	121	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	122	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	123	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	124	#else
102	# define LOCK (void)0	125	# define LOCK (void)0
103	# define UNLOCK (void)0	126	# define UNLOCK (void)0
104	#endif	127	#endif
105		128
		129	/* helper storage struct for Coro::AIO */
106	struct io_state	130	struct io_state
107	{	131	{
108	int errorno;	132	int errorno;
109	I32 laststype;	133	I32 laststype;
110	int laststatval;	134	int laststatval;
111	Stat_t statcache;	135	Stat_t statcache;
112	};	136	};
113		137
		138	static size_t coro_stacksize = CORO_STACKSIZE;
114	static struct CoroAPI coroapi;	139	static struct CoroAPI coroapi;
115	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;
116	static HV *coro_state_stash, *coro_stash;	142	static HV *coro_state_stash, *coro_stash;
117	static SV *coro_mortal; /* will be freed after next transfer */	143	static SV *coro_mortal; /* will be freed after next transfer */
118		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
119	static struct coro_cctx *cctx_first;	153	static struct coro_cctx *cctx_first;
120	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	};
121		164
122	/* this is a structure representing a c-level coroutine */	165	/* this is a structure representing a c-level coroutine */
123	typedef struct coro_cctx {	166	typedef struct coro_cctx {
124	struct coro_cctx *next;	167	struct coro_cctx *next;
125		168
126	/* the stack */	169	/* the stack */
127	void *sptr;	170	void *sptr;
128	long ssize; /* positive == mmap, otherwise malloc */	171	size_t ssize;
129		172
130	/* cpu state */	173	/* cpu state */
131	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 */
132	JMPENV *top_env;	176	JMPENV *top_env;
133	coro_context cctx;	177	coro_context cctx;
134		178
135	int inuse;
136
137	#if USE_VALGRIND	179	#if CORO_USE_VALGRIND
138	int valgrind_id;	180	int valgrind_id;
139	#endif	181	#endif
		182	unsigned char flags;
140	} coro_cctx;	183	} coro_cctx;
141		184
142	enum {	185	enum {
143	CF_RUNNING = 0x0001, /* coroutine is running */	186	CF_RUNNING = 0x0001, /* coroutine is running */
144	CF_READY = 0x0002, /* coroutine is ready */	187	CF_READY = 0x0002, /* coroutine is ready */
145	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 */
146	};	190	};
147		191
148	/* this is a structure representing a perl-level coroutine */	192	/* this is a structure representing a perl-level coroutine */
149	struct coro {	193	struct coro {
150	/* the c coroutine allocated to this perl coroutine, if any */	194	/* the c coroutine allocated to this perl coroutine, if any */
151	coro_cctx *cctx;	195	coro_cctx *cctx;
152		196
153	/* data associated with this coroutine (initial args) */	197	/* data associated with this coroutine (initial args) */
154	AV *args;	198	AV *args;
155	int refcnt;	199	int refcnt;
156	int 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 */
		207	SV *irssv; /* $/ */
		208	SV *irssv_sv; /* real $/ cache */
162		209
163	#define VAR(name,type) type name;	210	#define VAR(name,type) type name;
164	# include "state.h"	211	# include "state.h"
165	#undef VAR	212	#undef VAR
166		213
		214	/* statistics */
		215	int usecount; /* number of transfers to this coro */
		216
167	/* coro process data */	217	/* coro process data */
168	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 */
169	};	227	};
170		228
171	typedef struct coro *Coro__State;	229	typedef struct coro *Coro__State;
172	typedef struct coro *Coro__State_or_hashref;	230	typedef struct coro *Coro__State_or_hashref;
173		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
174	static AV *	249	static AV *
175	coro_clone_padlist (CV *cv)	250	coro_clone_padlist (pTHX_ CV *cv)
176	{	251	{
177	AV *padlist = CvPADLIST (cv);	252	AV *padlist = CvPADLIST (cv);
178	AV *newpadlist, *newpad;	253	AV *newpadlist, *newpad;
179		254
180	newpadlist = newAV ();	255	newpadlist = newAV ();
…		…
192		267
193	return newpadlist;	268	return newpadlist;
194	}	269	}
195		270
196	static void	271	static void
197	free_padlist (AV *padlist)	272	free_padlist (pTHX_ AV *padlist)
198	{	273	{
199	/* may be during global destruction */	274	/* may be during global destruction */
200	if (SvREFCNT (padlist))	275	if (SvREFCNT (padlist))
201	{	276	{
202	I32 i = AvFILLp (padlist);	277	I32 i = AvFILLp (padlist);
…		…
223	AV *padlist;	298	AV *padlist;
224	AV *av = (AV *)mg->mg_obj;	299	AV *av = (AV *)mg->mg_obj;
225		300
226	/* casting is fun. */	301	/* casting is fun. */
227	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	302	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
228	free_padlist (padlist);	303	free_padlist (aTHX_ padlist);
229		304
230	SvREFCNT_dec (av);	305	SvREFCNT_dec (av);
231		306
232	return 0;	307	return 0;
233	}	308	}
…		…
241	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
242	? SvMAGIC (cv) \	317	? SvMAGIC (cv) \
243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
244	: 0	319	: 0
245		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
246	/* the next two functions merely cache the padlists */	347	/* the next two functions merely cache the padlists */
247	static void	348	static void
248	get_padlist (CV *cv)	349	get_padlist (pTHX_ CV *cv)
249	{	350	{
250	MAGIC *mg = CORO_MAGIC (cv);	351	MAGIC *mg = CORO_MAGIC (cv);
251	AV *av;	352	AV *av;
252		353
253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255	else	356	else
256	{	357	{
257	#if 0	358	#if CORO_PREFER_PERL_FUNCTIONS
258	/* this is probably cleaner, but also slower? */	359	/* this is probably cleaner, but also slower? */
259	CV *cp = Perl_cv_clone (cv);	360	CV *cp = Perl_cv_clone (cv);
260	CvPADLIST (cv) = CvPADLIST (cp);	361	CvPADLIST (cv) = CvPADLIST (cp);
261	CvPADLIST (cp) = 0;	362	CvPADLIST (cp) = 0;
262	SvREFCNT_dec (cp);	363	SvREFCNT_dec (cp);
263	#else	364	#else
264	CvPADLIST (cv) = coro_clone_padlist (cv);	365	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
265	#endif	366	#endif
266	}	367	}
267	}	368	}
268		369
269	static void	370	static void
270	put_padlist (CV *cv)	371	put_padlist (pTHX_ CV *cv)
271	{	372	{
272	MAGIC *mg = CORO_MAGIC (cv);	373	MAGIC *mg = CORO_MAGIC (cv);
273	AV *av;	374	AV *av;
274		375
275	if (!mg)	376	if (!mg)
…		…
286	av_extend (av, AvMAX (av) + 1);	387	av_extend (av, AvMAX (av) + 1);
287		388
288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
289	}	390	}
290		391
291	#define SB do {	392	/** load & save, init *******************************************************/
292	#define SE } while (0)
293		393
294	#define LOAD(state) load_state ((state))
295	#define SAVE(state,flags) save_state ((state),(flags))
296
297	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
298
299	static void	394	static void
300	load_state (Coro__State c)	395	load_perl (pTHX_ Coro__State c)
301	{	396	{
302	#define VAR(name,type) PL_ ## name = c->name;	397	#define VAR(name,type) PL_ ## name = c->name;
303	# include "state.h"	398	# include "state.h"
304	#undef VAR	399	#undef VAR
305		400
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	401	GvSV (PL_defgv) = c->defsv;
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	402	GvAV (PL_defgv) = c->defav;
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	403	GvSV (PL_errgv) = c->errsv;
		404	GvSV (irsgv) = c->irssv_sv;
309		405
310	{	406	{
311	dSP;	407	dSP;
312	CV *cv;	408	CV *cv;
313		409
314	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
316	{	412	{
317	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
318	CvDEPTH (cv) = PTR2IV (POPs);	414	CvDEPTH (cv) = PTR2IV (POPs);
319	CvPADLIST (cv) = (AV *)POPs;	415	CvPADLIST (cv) = (AV *)POPs;
320	}	416	}
321		417
322	PUTBACK;	418	PUTBACK;
323	}	419	}
324	}	420	}
325		421
326	static void	422	static void
327	save_state (Coro__State c, int flags)	423	save_perl (pTHX_ Coro__State c)
328	{	424	{
329	{	425	{
330	dSP;	426	dSP;
331	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
332	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
335	/*	431	/*
336	* 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
337	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
338	*/	434	*/
339		435
340	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
341	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
342	for (;;)	438	for (;;)
343	{	439	{
344	while (cxix >= 0)	440	while (cxix >= 0)
345	{	441	{
346	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
347		443
348	if (CxTYPE (cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
349	{	445	{
350	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
351		447
352	if (CvDEPTH (cv))	448	if (CvDEPTH (cv))
353	{	449	{
354	EXTEND (SP, 3);	450	EXTEND (SP, 3);
355
356	PUSHs ((SV *)CvPADLIST (cv));	451	PUSHs ((SV *)CvPADLIST (cv));
357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
358	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
359		454
360	CvDEPTH (cv) = 0;	455	CvDEPTH (cv) = 0;
361	get_padlist (cv);	456	get_padlist (aTHX_ cv);
362	}	457	}
363	}	458	}
364	#ifdef CXt_FORMAT
365	else if (CxTYPE (cx) == CXt_FORMAT)
366	{
367	/* I never used formats, so how should I know how these are implemented? */
368	/* my bold guess is as a simple, plain sub... */
369	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
370	}
371	#endif
372	}	459	}
373		460
374	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
375	break;	462	break;
376		463
377	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
378	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
379	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
380	}	467	}
381		468
382	PUTBACK;	469	PUTBACK;
383	}	470	}
384		471
385	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	c->defav = GvAV (PL_defgv);
386	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = DEFSV;
387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = ERRSV;
		475	c->irssv_sv = GvSV (irsgv);
388		476
389	#define VAR(name,type)c->name = PL_ ## name;	477	#define VAR(name,type)c->name = PL_ ## name;
390	# include "state.h"	478	# include "state.h"
391	#undef VAR	479	#undef VAR
392	}	480	}
…		…
395	* allocate various perl stacks. This is an exact copy	483	* allocate various perl stacks. This is an exact copy
396	* of perl.c:init_stacks, except that it uses less memory	484	* of perl.c:init_stacks, except that it uses less memory
397	* on the (sometimes correct) assumption that coroutines do	485	* on the (sometimes correct) assumption that coroutines do
398	* not usually need a lot of stackspace.	486	* not usually need a lot of stackspace.
399	*/	487	*/
		488	#if CORO_PREFER_PERL_FUNCTIONS
		489	# define coro_init_stacks init_stacks
		490	#else
400	static void	491	static void
401	coro_init_stacks ()	492	coro_init_stacks (pTHX)
402	{	493	{
403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	494	PL_curstackinfo = new_stackinfo(64, 6);
404	PL_curstackinfo->si_type = PERLSI_MAIN;	495	PL_curstackinfo->si_type = PERLSI_MAIN;
405	PL_curstack = PL_curstackinfo->si_stack;	496	PL_curstack = PL_curstackinfo->si_stack;
406	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
407		498
408	PL_stack_base = AvARRAY(PL_curstack);	499	PL_stack_base = AvARRAY(PL_curstack);
409	PL_stack_sp = PL_stack_base;	500	PL_stack_sp = PL_stack_base;
410	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
411		502
412	New(50,PL_tmps_stack,128,SV*);	503	New(50,PL_tmps_stack,64,SV*);
413	PL_tmps_floor = -1;	504	PL_tmps_floor = -1;
414	PL_tmps_ix = -1;	505	PL_tmps_ix = -1;
415	PL_tmps_max = 128;	506	PL_tmps_max = 64;
416		507
417	New(54,PL_markstack,32,I32);	508	New(54,PL_markstack,16,I32);
418	PL_markstack_ptr = PL_markstack;	509	PL_markstack_ptr = PL_markstack;
419	PL_markstack_max = PL_markstack + 32;	510	PL_markstack_max = PL_markstack + 16;
420		511
421	#ifdef SET_MARK_OFFSET	512	#ifdef SET_MARK_OFFSET
422	SET_MARK_OFFSET;	513	SET_MARK_OFFSET;
423	#endif	514	#endif
424		515
425	New(54,PL_scopestack,32,I32);	516	New(54,PL_scopestack,16,I32);
426	PL_scopestack_ix = 0;	517	PL_scopestack_ix = 0;
427	PL_scopestack_max = 32;	518	PL_scopestack_max = 16;
428		519
429	New(54,PL_savestack,64,ANY);	520	New(54,PL_savestack,64,ANY);
430	PL_savestack_ix = 0;	521	PL_savestack_ix = 0;
431	PL_savestack_max = 64;	522	PL_savestack_max = 64;
432		523
433	#if !PERL_VERSION_ATLEAST (5,9,0)	524	#if !PERL_VERSION_ATLEAST (5,9,0)
434	New(54,PL_retstack,16,OP*);	525	New(54,PL_retstack,4,OP*);
435	PL_retstack_ix = 0;	526	PL_retstack_ix = 0;
436	PL_retstack_max = 16;	527	PL_retstack_max = 4;
437	#endif	528	#endif
438	}	529	}
		530	#endif
439		531
440	/*	532	/*
441	* destroy the stacks, the callchain etc...	533	* destroy the stacks, the callchain etc...
442	*/	534	*/
443	static void	535	static void
444	coro_destroy_stacks ()	536	coro_destroy_stacks (pTHX)
445	{	537	{
446	if (!IN_DESTRUCT)
447	{
448	/* is this ugly, I ask? */
449	LEAVE_SCOPE (0);
450
451	/* sure it is, but more important: is it correct?? :/ */
452	FREETMPS;
453
454	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
455	}
456
457	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
458	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
459		540
460	while (PL_curstackinfo)	541	while (PL_curstackinfo)
461	{	542	{
462	PERL_SI *p = PL_curstackinfo->si_prev;	543	PERL_SI *p = PL_curstackinfo->si_prev;
463		544
464	{ /*D*//*remove*/
465	dSP;
466	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
467	PUTBACK; /* possibly superfluous */
468	}
469
470	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
471	{
472	dounwind (-1);/*D*//*remove*/
473	SvREFCNT_dec (PL_curstackinfo->si_stack);	546	SvREFCNT_dec (PL_curstackinfo->si_stack);
474	}
475		547
476	Safefree (PL_curstackinfo->si_cxstack);	548	Safefree (PL_curstackinfo->si_cxstack);
477	Safefree (PL_curstackinfo);	549	Safefree (PL_curstackinfo);
478	PL_curstackinfo = p;	550	PL_curstackinfo = p;
479	}	551	}
…		…
485	#if !PERL_VERSION_ATLEAST (5,9,0)	557	#if !PERL_VERSION_ATLEAST (5,9,0)
486	Safefree (PL_retstack);	558	Safefree (PL_retstack);
487	#endif	559	#endif
488	}	560	}
489		561
490	static void	562	static size_t
491	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)
492	{	597	{
493	/*	598	/*
494	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
495	*/	600	*/
496
497	coro_init_stacks ();	601	coro_init_stacks (aTHX);
498		602
		603	PL_runops = RUNOPS_DEFAULT;
499	PL_curcop = &PL_compiling;	604	PL_curcop = &PL_compiling;
500	PL_in_eval = EVAL_NULL;	605	PL_in_eval = EVAL_NULL;
		606	PL_comppad = 0;
501	PL_curpm = 0;	607	PL_curpm = 0;
502	PL_localizing = 0;	608	PL_localizing = 0;
503	PL_dirty = 0;	609	PL_dirty = 0;
504	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);
505		618
506	{	619	{
507	dSP;	620	dSP;
508	LOGOP myop;	621	LOGOP myop;
509		622
510	SvREFCNT_dec (GvAV (PL_defgv));
511	GvAV (PL_defgv) = coro->args; coro->args = 0;
512
513	Zero (&myop, 1, LOGOP);	623	Zero (&myop, 1, LOGOP);
514	myop.op_next = Nullop;	624	myop.op_next = Nullop;
515	myop.op_flags = OPf_WANT_VOID;	625	myop.op_flags = OPf_WANT_VOID;
516		626
517	PUSHMARK (SP);	627	PUSHMARK (SP);
518	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	628	XPUSHs (av_shift (GvAV (PL_defgv)));
519	PUTBACK;	629	PUTBACK;
520	PL_op = (OP *)&myop;	630	PL_op = (OP *)&myop;
521	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	631	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
522	SPAGAIN;	632	SPAGAIN;
523	}	633	}
524		634
525	ENTER; /* necessary e.g. for dounwind */	635	ENTER; /* necessary e.g. for dounwind */
526	}	636	}
527		637
528	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
529	free_coro_mortal ()	672	free_coro_mortal (pTHX)
530	{	673	{
531	if (coro_mortal)	674	if (coro_mortal)
532	{	675	{
533	SvREFCNT_dec (coro_mortal);	676	SvREFCNT_dec (coro_mortal);
534	coro_mortal = 0;	677	coro_mortal = 0;
535	}	678	}
536	}	679	}
537		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
538	/* 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 */
539	static void NOINLINE	807	static void NOINLINE
540	prepare_cctx (coro_cctx *cctx)	808	prepare_cctx (pTHX_ coro_cctx *cctx)
541	{	809	{
542	dSP;	810	dSP;
543	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;
544		817
545	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
546	myop.op_next = PL_op;	819	myop.op_next = PL_op;
547	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	820	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
548		821
…		…
554	PL_op = (OP *)&myop;	827	PL_op = (OP *)&myop;
555	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	828	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
556	SPAGAIN;	829	SPAGAIN;
557	}	830	}
558		831
		832	/*
		833	* this is a _very_ stripped down perl interpreter ;)
		834	*/
559	static void	835	static void
560	coro_run (void *arg)	836	coro_run (void *arg)
561	{	837	{
		838	dTHX;
		839
562	/* coro_run is the alternative tail of transfer(), so unlock here. */	840	/* coro_run is the alternative tail of transfer(), so unlock here. */
563	UNLOCK;	841	UNLOCK;
564		842
565	/*	843	/* we now skip the entersub that lead to transfer() */
566	* this is a _very_ stripped down perl interpreter ;)	844	PL_op = PL_op->op_next;
567	*/
568	PL_top_env = &PL_start_env;
569		845
570	/* inject call to cctx_init */	846	/* inject a fake subroutine call to cctx_init */
571	prepare_cctx ((coro_cctx *)arg);	847	prepare_cctx (aTHX_ (coro_cctx *)arg);
572		848
573	/* 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 */
574	PL_restartop = PL_op;	850	PL_restartop = PL_op;
575	perl_run (PL_curinterp);	851	perl_run (PL_curinterp);
576		852
577	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	853	/*
578	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 */
579	}	862	}
580		863
581	static coro_cctx *	864	static coro_cctx *
582	cctx_new ()	865	cctx_new ()
583	{	866	{
584	coro_cctx *cctx;	867	coro_cctx *cctx;
		868	void *stack_start;
		869	size_t stack_size;
585		870
586	++cctx_count;	871	++cctx_count;
587		872
588	New (0, cctx, 1, coro_cctx);	873	Newz (0, cctx, 1, coro_cctx);
589		874
590	#if HAVE_MMAP	875	#if HAVE_MMAP
591		876
592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
593	/* mmap supposedly does allocate-on-write for us */	878	/* mmap supposedly does allocate-on-write for us */
594	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);
595		880
596	if (cctx->sptr == (void *)-1)	881	if (cctx->sptr != (void *)-1)
597	{
598	perror ("FATAL: unable to mmap stack for coroutine");
599	_exit (EXIT_FAILURE);
600	}	882	{
601
602	# if STACKGUARD	883	# if CORO_STACKGUARD
603	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	884	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
604	# 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);
605		895
606	#else
607
608	cctx->ssize = STACKSIZE * (long)sizeof (long);
609	New (0, cctx->sptr, STACKSIZE, long);
610
611	if (!cctx->sptr)	896	if (!cctx->sptr)
612	{	897	{
613	perror ("FATAL: unable to malloc stack for coroutine");	898	perror ("FATAL: unable to allocate stack for coroutine");
614	_exit (EXIT_FAILURE);	899	_exit (EXIT_FAILURE);
615	}	900	}
616		901
617	#endif	902	stack_start = cctx->sptr;
		903	stack_size = cctx->ssize;
		904	}
618		905
619	#if USE_VALGRIND	906	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
620	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
621	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
622	cctx->ssize + (char *)cctx->sptr
623	);
624	#endif
625
626	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);
627		908
628	return cctx;	909	return cctx;
629	}	910	}
630		911
631	static void	912	static void
…		…
634	if (!cctx)	915	if (!cctx)
635	return;	916	return;
636		917
637	--cctx_count;	918	--cctx_count;
638		919
639	#if USE_VALGRIND	920	#if CORO_USE_VALGRIND
640	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
641	#endif	922	#endif
642		923
643	#if HAVE_MMAP	924	#if HAVE_MMAP
		925	if (cctx->flags & CC_MAPPED)
644	munmap (cctx->sptr, cctx->ssize);	926	munmap (cctx->sptr, cctx->ssize);
645	#else	927	else
		928	#endif
646	Safefree (cctx->sptr);	929	Safefree (cctx->sptr);
647	#endif
648		930
649	Safefree (cctx);	931	Safefree (cctx);
650	}	932	}
651		933
652	static coro_cctx *	934	static coro_cctx *
653	cctx_get ()	935	cctx_get (pTHX)
654	{	936	{
655	coro_cctx *cctx;
656
657	if (cctx_first)	937	while (cctx_first)
658	{	938	{
659	cctx = cctx_first;	939	coro_cctx *cctx = cctx_first;
660	cctx_first = cctx->next;	940	cctx_first = cctx->next;
661	--cctx_idle;	941	--cctx_idle;
662	}	942
663	else	943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
664	{	944	return cctx;
665	cctx = cctx_new ();	945
666	PL_op = PL_op->op_next;	946	cctx_destroy (cctx);
667	}	947	}
668		948
669	return cctx;	949	return cctx_new ();
670	}	950	}
671		951
672	static void	952	static void
673	cctx_put (coro_cctx *cctx)	953	cctx_put (coro_cctx *cctx)
674	{	954	{
…		…
677	{	957	{
678	coro_cctx *first = cctx_first;	958	coro_cctx *first = cctx_first;
679	cctx_first = first->next;	959	cctx_first = first->next;
680	--cctx_idle;	960	--cctx_idle;
681		961
682	assert (!first->inuse);
683	cctx_destroy (first);	962	cctx_destroy (first);
684	}	963	}
685		964
686	++cctx_idle;	965	++cctx_idle;
687	cctx->next = cctx_first;	966	cctx->next = cctx_first;
688	cctx_first = cctx;	967	cctx_first = cctx;
689	}	968	}
690		969
691	/* never call directly, always through the coro_state_transfer global variable */	970	/** coroutine switching *****************************************************/
		971
692	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
693	transfer (struct coro *prev, struct coro *next, int flags)	993	transfer (pTHX_ struct coro *prev, struct coro *next)
694	{	994	{
695	dSTACKLEVEL;	995	dSTACKLEVEL;
696		996
697	/* sometimes transfer is only called to set idle_sp */	997	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	998	if (!next)
		999	{
699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1000	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1001	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
		1002	}
700	else if (prev != next)	1003	else if (prev != next)
701	{	1004	{
702	coro_cctx *prev__cctx;	1005	coro_cctx *prev__cctx;
703		1006
704	if (prev->flags & CF_NEW)	1007	if (prev->flags & CF_NEW)
705	{	1008	{
706	/* create a new empty context */	1009	/* create a new empty context */
707	Newz (0, prev->cctx, 1, coro_cctx);	1010	Newz (0, prev->cctx, 1, coro_cctx);
708	prev->cctx->inuse = 1;
709	prev->flags &= ~CF_NEW;	1011	prev->flags &= ~CF_NEW;
710	prev->flags |= CF_RUNNING;	1012	prev->flags |= CF_RUNNING;
711	}	1013	}
712
713	/*TODO: must not croak here */
714	if (!prev->flags & CF_RUNNING)
715	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
716
717	if (next->flags & CF_RUNNING)
718	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
719		1014
720	prev->flags &= ~CF_RUNNING;	1015	prev->flags &= ~CF_RUNNING;
721	next->flags |= CF_RUNNING;	1016	next->flags |= CF_RUNNING;
722		1017
723	LOCK;	1018	LOCK;
…		…
725	if (next->flags & CF_NEW)	1020	if (next->flags & CF_NEW)
726	{	1021	{
727	/* need to start coroutine */	1022	/* need to start coroutine */
728	next->flags &= ~CF_NEW;	1023	next->flags &= ~CF_NEW;
729	/* first get rid of the old state */	1024	/* first get rid of the old state */
730	SAVE (prev, -1);	1025	save_perl (aTHX_ prev);
731	/* setup coroutine call */	1026	/* setup coroutine call */
732	setup_coro (next);	1027	coro_setup (aTHX_ next);
733	/* need a new stack */
734	assert (!next->stack);
735	}	1028	}
736	else	1029	else
737	{	1030	{
738	/* coroutine already started */	1031	/* coroutine already started */
739	SAVE (prev, flags);	1032	save_perl (aTHX_ prev);
740	LOAD (next);	1033	load_perl (aTHX_ next);
741	}	1034	}
742		1035
743	prev__cctx = prev->cctx;	1036	prev__cctx = prev->cctx;
744		1037
745	/* possibly "free" the cctx */	1038	/* possibly "free" the cctx */
746	if (prev__cctx->idle_sp == STACKLEVEL)	1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
747	{	1040	{
748	/* 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 */
749	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));
750		1043
751	prev->cctx = 0;	1044	prev->cctx = 0;
752		1045
753	cctx_put (prev__cctx);	1046	cctx_put (prev__cctx);
754	prev__cctx->inuse = 0;
755	}	1047	}
756		1048
		1049	++next->usecount;
		1050
757	if (!next->cctx)	1051	if (!next->cctx)
758	{
759	next->cctx = cctx_get ();	1052	next->cctx = cctx_get (aTHX);
760	assert (!next->cctx->inuse);
761	next->cctx->inuse = 1;
762	}
763		1053
764	if (prev__cctx != next->cctx)	1054	if (prev__cctx != next->cctx)
765	{	1055	{
766	prev__cctx->top_env = PL_top_env;	1056	prev__cctx->top_env = PL_top_env;
767	PL_top_env = next->cctx->top_env;	1057	PL_top_env = next->cctx->top_env;
768	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
769	}	1059	}
770		1060
771	free_coro_mortal ();	1061	free_coro_mortal (aTHX);
772
773	UNLOCK;	1062	UNLOCK;
774	}	1063	}
775	}	1064	}
776		1065
777	struct transfer_args	1066	struct transfer_args
778	{	1067	{
779	struct coro *prev, *next;	1068	struct coro *prev, *next;
780	int flags;
781	};	1069	};
782		1070
783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
784		1073
		1074	/** high level stuff ********************************************************/
		1075
785	static void	1076	static int
786	coro_state_destroy (struct coro *coro)	1077	coro_state_destroy (pTHX_ struct coro *coro)
787	{	1078	{
788	if (coro->refcnt--)	1079	if (coro->flags & CF_DESTROYED)
789	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 */
790		1094
791	if (coro->mainstack && coro->mainstack != main_mainstack)	1095	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	1096	{
793	struct coro temp;	1097	struct coro temp;
794		1098
795	if (coro->flags & CF_RUNNING)	1099	if (coro->flags & CF_RUNNING)
796	croak ("FATAL: tried to destroy currently running coroutine");	1100	croak ("FATAL: tried to destroy currently running coroutine");
797		1101
798	SAVE ((&temp), TRANSFER_SAVE_ALL);	1102	save_perl (aTHX_ &temp);
799	LOAD (coro);	1103	load_perl (aTHX_ coro);
800		1104
801	coro_destroy_stacks ();	1105	coro_destroy (aTHX_ coro);
802		1106
803	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
804		1108
805	coro->mainstack = 0;	1109	coro->mainstack = 0;
806	}	1110	}
807		1111
808	cctx_destroy (coro->cctx);	1112	cctx_destroy (coro->cctx);
809	SvREFCNT_dec (coro->args);	1113	SvREFCNT_dec (coro->args);
810	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;
811	}	1120	}
812		1121
813	static int	1122	static int
814	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1123	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
815	{	1124	{
816	struct coro *coro = (struct coro *)mg->mg_ptr;	1125	struct coro *coro = (struct coro *)mg->mg_ptr;
817	mg->mg_ptr = 0;	1126	mg->mg_ptr = 0;
818		1127
		1128	coro->hv = 0;
		1129
		1130	if (--coro->refcnt < 0)
		1131	{
819	coro_state_destroy (coro);	1132	coro_state_destroy (aTHX_ coro);
		1133	Safefree (coro);
		1134	}
820		1135
821	return 0;	1136	return 0;
822	}	1137	}
823		1138
824	static int	1139	static int
…		…
831	return 0;	1146	return 0;
832	}	1147	}
833		1148
834	static MGVTBL coro_state_vtbl = {	1149	static MGVTBL coro_state_vtbl = {
835	0, 0, 0, 0,	1150	0, 0, 0, 0,
836	coro_state_clear,	1151	coro_state_free,
837	0,	1152	0,
838	#ifdef MGf_DUP	1153	#ifdef MGf_DUP
839	coro_state_dup,	1154	coro_state_dup,
840	#else	1155	#else
841	# define MGf_DUP 0	1156	# define MGf_DUP 0
842	#endif	1157	#endif
843	};	1158	};
844		1159
845	static struct coro *
846	SvSTATE (SV *coro)
847	{
848	HV *stash;
849	MAGIC *mg;
850
851	if (SvROK (coro))
852	coro = SvRV (coro);
853
854	stash = SvSTASH (coro);
855	if (stash != coro_stash && stash != coro_state_stash)
856	{
857	/* very slow, but rare, check */
858	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
859	croak ("Coro::State object required");
860	}
861
862	mg = SvMAGIC (coro);
863	assert (mg->mg_type == PERL_MAGIC_ext);
864	return (struct coro *)mg->mg_ptr;
865	}
866
867	static void	1160	static void
868	prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags)	1161	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
869	{	1162	{
870	ta->prev = SvSTATE (prev);	1163	ta->prev = SvSTATE (prev_sv);
871	ta->next = SvSTATE (next);	1164	ta->next = SvSTATE (next_sv);
872	ta->flags = flags;	1165	TRANSFER_CHECK (*ta);
873	}	1166	}
874		1167
875	static void	1168	static void
876	api_transfer (SV *prev, SV *next, int flags)	1169	api_transfer (SV *prev_sv, SV *next_sv)
877	{	1170	{
		1171	dTHX;
878	struct transfer_args ta;	1172	struct transfer_args ta;
879		1173
880	prepare_transfer (&ta, prev, next, flags);	1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
881	TRANSFER (ta);	1175	TRANSFER (ta);
882	}	1176	}
883		1177
884	/** Coro ********************************************************************/	1178	/** Coro ********************************************************************/
885		1179
886	#define PRIO_MAX 3
887	#define PRIO_HIGH 1
888	#define PRIO_NORMAL 0
889	#define PRIO_LOW -1
890	#define PRIO_IDLE -3
891	#define PRIO_MIN -4
892
893	/* for Coro.pm */
894	static SV *coro_current;
895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
896	static int coro_nready;
897
898	static void	1180	static void
899	coro_enq (SV *coro_sv)	1181	coro_enq (pTHX_ SV *coro_sv)
900	{	1182	{
901	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);
902	coro_nready++;
903	}	1184	}
904		1185
905	static SV *	1186	static SV *
906	coro_deq (int min_prio)	1187	coro_deq (pTHX_ int min_prio)
907	{	1188	{
908	int prio = PRIO_MAX - PRIO_MIN;	1189	int prio = PRIO_MAX - PRIO_MIN;
909		1190
910	min_prio -= PRIO_MIN;	1191	min_prio -= PRIO_MIN;
911	if (min_prio < 0)	1192	if (min_prio < 0)
912	min_prio = 0;	1193	min_prio = 0;
913		1194
914	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
915	if (AvFILLp (coro_ready [prio]) >= 0)	1196	if (AvFILLp (coro_ready [prio]) >= 0)
916	{
917	coro_nready--;
918	return av_shift (coro_ready [prio]);	1197	return av_shift (coro_ready [prio]);
919	}
920		1198
921	return 0;	1199	return 0;
922	}	1200	}
923		1201
924	static int	1202	static int
925	api_ready (SV *coro_sv)	1203	api_ready (SV *coro_sv)
926	{	1204	{
		1205	dTHX;
927	struct coro *coro;	1206	struct coro *coro;
928		1207
929	if (SvROK (coro_sv))	1208	if (SvROK (coro_sv))
930	coro_sv = SvRV (coro_sv);	1209	coro_sv = SvRV (coro_sv);
931		1210
932	coro = SvSTATE (coro_sv);	1211	coro = SvSTATE (coro_sv);
933		1212
934	if (coro->flags & CF_READY)	1213	if (coro->flags & CF_READY)
935	return 0;	1214	return 0;
936		1215
937	#if 0 /* this is actually harmless */
938	if (coro->flags & CF_RUNNING)
939	croak ("Coro::ready called on currently running coroutine");
940	#endif
941
942	coro->flags |= CF_READY;	1216	coro->flags |= CF_READY;
943		1217
944	LOCK;	1218	LOCK;
945	coro_enq (SvREFCNT_inc (coro_sv));	1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1220	++coro_nready;
946	UNLOCK;	1221	UNLOCK;
947		1222
948	return 1;	1223	return 1;
949	}	1224	}
950		1225
951	static int	1226	static int
952	api_is_ready (SV *coro_sv)	1227	api_is_ready (SV *coro_sv)
953	{	1228	{
		1229	dTHX;
954	return !!SvSTATE (coro_sv)->flags & CF_READY;	1230	return !!(SvSTATE (coro_sv)->flags & CF_READY);
955	}	1231	}
956		1232
957	static void	1233	static void
958	prepare_schedule (struct transfer_args *ta)	1234	prepare_schedule (pTHX_ struct transfer_args *ta)
959	{	1235	{
960	SV *prev, *next;	1236	SV *prev_sv, *next_sv;
961		1237
962	for (;;)	1238	for (;;)
963	{	1239	{
964	LOCK;	1240	LOCK;
965	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;
966	UNLOCK;	1273	UNLOCK;
967
968	if (next)
969	break;	1274	break;
970
971	{
972	dSP;
973
974	ENTER;
975	SAVETMPS;
976
977	PUSHMARK (SP);
978	PUTBACK;
979	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
980
981	FREETMPS;
982	LEAVE;
983	}	1275	}
984	}
985
986	prev = SvRV (coro_current);
987	SvRV_set (coro_current, next);
988		1276
989	/* free this only after the transfer */	1277	/* free this only after the transfer */
		1278	prev_sv = SvRV (coro_current);
		1279	ta->prev = SvSTATE (prev_sv);
		1280	TRANSFER_CHECK (*ta);
		1281	assert (ta->next->flags & CF_READY);
		1282	ta->next->flags &= ~CF_READY;
		1283	SvRV_set (coro_current, next_sv);
		1284
990	LOCK;	1285	LOCK;
991	free_coro_mortal ();	1286	free_coro_mortal (aTHX);
		1287	coro_mortal = prev_sv;
992	UNLOCK;	1288	UNLOCK;
993	coro_mortal = prev;
994
995	assert (!SvROK(prev));//D
996	assert (!SvROK(next));//D
997
998	ta->prev = SvSTATE (prev);
999	ta->next = SvSTATE (next);
1000	ta->flags = TRANSFER_SAVE_ALL;
1001
1002	assert (ta->flags & CF_READY);
1003	ta->next->flags &= ~CF_READY;
1004	}	1289	}
1005		1290
1006	static void	1291	static void
1007	prepare_cede (struct transfer_args *ta)	1292	prepare_cede (pTHX_ struct transfer_args *ta)
1008	{	1293	{
1009	api_ready (coro_current);	1294	api_ready (coro_current);
1010
1011	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;
1012	}	1310	}
1013		1311
1014	static void	1312	static void
1015	api_schedule (void)	1313	api_schedule (void)
1016	{	1314	{
		1315	dTHX;
1017	struct transfer_args ta;	1316	struct transfer_args ta;
1018		1317
1019	prepare_schedule (&ta);	1318	prepare_schedule (aTHX_ &ta);
1020	TRANSFER (ta);	1319	TRANSFER (ta);
1021	}	1320	}
1022		1321
1023	static void	1322	static int
1024	api_cede (void)	1323	api_cede (void)
1025	{	1324	{
		1325	dTHX;
1026	struct transfer_args ta;	1326	struct transfer_args ta;
1027		1327
1028	prepare_cede (&ta);	1328	prepare_cede (aTHX_ &ta);
		1329
		1330	if (ta.prev != ta.next)
		1331	{
1029	TRANSFER (ta);	1332	TRANSFER (ta);
		1333	return 1;
		1334	}
		1335	else
		1336	return 0;
1030	}	1337	}
1031		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
1032	MODULE = Coro::State PACKAGE = Coro::State	1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1033		1381
1034	PROTOTYPES: DISABLE	1382	PROTOTYPES: DISABLE
1035		1383
1036	BOOT:	1384	BOOT:
1037	{	1385	{
1038	#ifdef USE_ITHREADS	1386	#ifdef USE_ITHREADS
1039	MUTEX_INIT (&coro_mutex);	1387	MUTEX_INIT (&coro_mutex);
1040	#endif	1388	#endif
1041	BOOT_PAGESIZE;	1389	BOOT_PAGESIZE;
1042		1390
		1391	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1392	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1393
1043	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1394	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1044		1395
1045	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1396	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1046	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1397	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1047	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1398	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1048		1400
1049	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;
1050		1406
1051	coroapi.ver = CORO_API_VERSION;	1407	coroapi.ver = CORO_API_VERSION;
1052	coroapi.transfer = api_transfer;	1408	coroapi.transfer = api_transfer;
1053		1409
1054	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1410	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1061	struct coro *coro;	1417	struct coro *coro;
1062	HV *hv;	1418	HV *hv;
1063	int i;	1419	int i;
1064		1420
1065	Newz (0, coro, 1, struct coro);	1421	Newz (0, coro, 1, struct coro);
1066	coro->args = newAV ();	1422	coro->args = newAV ();
1067	coro->flags = CF_NEW;	1423	coro->flags = CF_NEW;
1068		1424
		1425	if (coro_first) coro_first->prev = coro;
		1426	coro->next = coro_first;
		1427	coro_first = coro;
		1428
1069	hv = newHV ();	1429	coro->hv = hv = newHV ();
1070	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;
1071	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1431	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1072		1432
1073	for (i = 1; i < items; i++)	1433	for (i = 1; i < items; i++)
1074	av_push (coro->args, newSVsv (ST (i)));	1434	av_push (coro->args, newSVsv (ST (i)));
1075	}	1435	}
1076	OUTPUT:	1436	OUTPUT:
1077	RETVAL	1437	RETVAL
1078		1438
		1439	# these not obviously related functions are all rolled into the same xs
		1440	# function to increase chances that they all will call transfer with the same
		1441	# stack offset
1079	void	1442	void
1080	_set_stacklevel (...)	1443	_set_stacklevel (...)
1081	ALIAS:	1444	ALIAS:
1082	Coro::State::transfer = 1	1445	Coro::State::transfer = 1
1083	Coro::schedule = 2	1446	Coro::schedule = 2
1084	Coro::cede = 3	1447	Coro::cede = 3
		1448	Coro::cede_notself = 4
1085	CODE:	1449	CODE:
1086	{	1450	{
1087	struct transfer_args ta;	1451	struct transfer_args ta;
1088		1452
1089	switch (ix)	1453	switch (ix)
1090	{	1454	{
1091	case 0:	1455	case 0:
1092	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1456	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1093	ta.next = 0;	1457	ta.next = 0;
1094	ta.flags = TRANSFER_SET_STACKLEVEL;
1095	break;	1458	break;
1096		1459
1097	case 1:	1460	case 1:
1098	if (items != 3)	1461	if (items != 2)
1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1462	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1100		1463
1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1464	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1102	break;	1465	break;
1103		1466
1104	case 2:	1467	case 2:
1105	prepare_schedule (&ta);	1468	prepare_schedule (aTHX_ &ta);
1106	break;	1469	break;
1107		1470
1108	case 3:	1471	case 3:
1109	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
1110	break;	1479	break;
1111	}	1480	}
1112		1481
		1482	BARRIER;
1113	TRANSFER (ta);	1483	TRANSFER (ta);
1114	}
1115		1484
1116	void	1485	if (GIMME_V != G_VOID && ta.next != ta.prev)
1117	_clone_state_from (SV *dst, SV *src)	1486	XSRETURN_YES;
		1487	}
		1488
		1489	bool
		1490	_destroy (SV *coro_sv)
1118	CODE:	1491	CODE:
1119	{	1492	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1120	struct coro *coro_src = SvSTATE (src);	1493	OUTPUT:
1121		1494	RETVAL
1122	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1123
1124	++coro_src->refcnt;
1125	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1126	}
1127		1495
1128	void	1496	void
1129	_exit (code)	1497	_exit (code)
1130	int code	1498	int code
1131	PROTOTYPE: $	1499	PROTOTYPE: $
1132	CODE:	1500	CODE:
1133	_exit (code);	1501	_exit (code);
1134		1502
1135	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
1136	cctx_count ()	1513	cctx_count ()
1137	CODE:	1514	CODE:
1138	RETVAL = cctx_count;	1515	RETVAL = cctx_count;
1139	OUTPUT:	1516	OUTPUT:
1140	RETVAL	1517	RETVAL
…		…
1144	CODE:	1521	CODE:
1145	RETVAL = cctx_idle;	1522	RETVAL = cctx_idle;
1146	OUTPUT:	1523	OUTPUT:
1147	RETVAL	1524	RETVAL
1148		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
1149	MODULE = Coro::State PACKAGE = Coro	1624	MODULE = Coro::State PACKAGE = Coro
1150		1625
1151	BOOT:	1626	BOOT:
1152	{	1627	{
1153	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);
1154		1636
1155	coro_stash = gv_stashpv ("Coro", TRUE);	1637	coro_stash = gv_stashpv ("Coro", TRUE);
1156		1638
1157	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1639	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1158	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1640	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1159	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1641	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1160	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1642	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1161	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1643	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1162	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1644	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1163		1645
1164	coro_current = get_sv ("Coro::current", FALSE);
1165	SvREADONLY_on (coro_current);
1166
1167	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1646	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1168	coro_ready[i] = newAV ();	1647	coro_ready[i] = newAV ();
1169		1648
1170	{	1649	{
1171	SV *sv = perl_get_sv("Coro::API", 1);	1650	SV *sv = perl_get_sv("Coro::API", 1);
1172		1651
1173	coroapi.schedule = api_schedule;	1652	coroapi.schedule = api_schedule;
1174	coroapi.cede = api_cede;	1653	coroapi.cede = api_cede;
		1654	coroapi.cede_notself = api_cede_notself;
1175	coroapi.ready = api_ready;	1655	coroapi.ready = api_ready;
1176	coroapi.is_ready = api_is_ready;	1656	coroapi.is_ready = api_is_ready;
1177	coroapi.nready = &coro_nready;	1657	coroapi.nready = &coro_nready;
1178	coroapi.current = coro_current;	1658	coroapi.current = coro_current;
1179		1659
1180	GCoroAPI = &coroapi;	1660	GCoroAPI = &coroapi;
1181	sv_setiv (sv, (IV)&coroapi);	1661	sv_setiv (sv, (IV)&coroapi);
1182	SvREADONLY_on (sv);	1662	SvREADONLY_on (sv);
1183	}	1663	}
1184	}	1664	}
		1665
		1666	void
		1667	_set_current (SV *current)
		1668	PROTOTYPE: $
		1669	CODE:
		1670	SvREFCNT_dec (SvRV (coro_current));
		1671	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1185		1672
1186	int	1673	int
1187	prio (Coro::State coro, int newprio = 0)	1674	prio (Coro::State coro, int newprio = 0)
1188	ALIAS:	1675	ALIAS:
1189	nice = 1	1676	nice = 1
…		…
1192	RETVAL = coro->prio;	1679	RETVAL = coro->prio;
1193		1680
1194	if (items > 1)	1681	if (items > 1)
1195	{	1682	{
1196	if (ix)	1683	if (ix)
1197	newprio += coro->prio;	1684	newprio = coro->prio - newprio;
1198		1685
1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1686	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1687	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201		1688
1202	coro->prio = newprio;	1689	coro->prio = newprio;
1203	}	1690	}
1204	}	1691	}
		1692	OUTPUT:
		1693	RETVAL
1205		1694
1206	SV *	1695	SV *
1207	ready (SV *self)	1696	ready (SV *self)
1208	PROTOTYPE: $	1697	PROTOTYPE: $
1209	CODE:	1698	CODE:
1210	RETVAL = boolSV (api_ready (self));	1699	RETVAL = boolSV (api_ready (self));
1211	OUTPUT:	1700	OUTPUT:
1212	RETVAL	1701	RETVAL
1213		1702
1214	SV *
1215	is_ready (SV *self)
1216	PROTOTYPE: $
1217	CODE:
1218	RETVAL = boolSV (api_is_ready (self));
1219	OUTPUT:
1220	RETVAL
1221
1222	int	1703	int
1223	nready (...)	1704	nready (...)
1224	PROTOTYPE:	1705	PROTOTYPE:
1225	CODE:	1706	CODE:
1226	RETVAL = coro_nready;	1707	RETVAL = coro_nready;
1227	OUTPUT:	1708	OUTPUT:
1228	RETVAL	1709	RETVAL
1229		1710
		1711	# for async_pool speedup
1230	void	1712	void
1231	_set_current (SV *current)	1713	_pool_1 (SV *cb)
1232	PROTOTYPE: $
1233	CODE:	1714	CODE:
1234	SvREFCNT_dec (SvRV (coro_current));	1715	{
1235	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	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
1236		1774
1237	MODULE = Coro::State PACKAGE = Coro::AIO	1775	MODULE = Coro::State PACKAGE = Coro::AIO
1238		1776
1239	SV *	1777	SV *
1240	_get_state ()	1778	_get_state ()

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