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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.115 by root, Fri Dec 1 13:36:08 2006 UTC vs.
Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45		13	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		14
54	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
55	# include <unistd.h>	16	# include <unistd.h>
56	# include <sys/mman.h>	17	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
72	#else	33	#else
73	# define PAGESIZE 0	34	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
75	#endif	36	#endif
76		37
77	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
79	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
80	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
82		97
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		99
85	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	103	#else
88	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
89	#endif	106	#endif
90		107
91	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
92		109
93	#include "CoroAPI.h"	110	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		111
97	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	116	#else
102	# define LOCK (void)0	117	# define LOCK (void)0
103	# define UNLOCK (void)0	118	# define UNLOCK (void)0
104	#endif	119	#endif
105		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
106	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
108	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
110		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
111	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
112	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		152	};
113		153
114	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
115	typedef struct coro_cctx {	155	typedef struct coro_cctx {
116	struct coro_cctx *next;	156	struct coro_cctx *next;
117		157
118	/* the stack */	158	/* the stack */
119	void *sptr;	159	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
121		161
122	/* cpu state */	162	/* cpu state */
123	void idle_sp; / sp of top-level transfer/schedule/cede call */	163	void idle_sp; / sp of top-level transfer/schedule/cede call */
		164	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
124	JMPENV *top_env;	165	JMPENV *top_env;
125	coro_context cctx;	166	coro_context cctx;
126		167
127	int inuse;
128
129	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
130	int valgrind_id;	169	int valgrind_id;
131	#endif	170	#endif
		171	unsigned char flags;
132	} coro_cctx;	172	} coro_cctx;
133		173
134	enum {	174	enum {
135	CF_RUNNING, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
		177	CF_NEW = 0x0004, /* has never been switched to */
		178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
137	};	179	};
138		180
139	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
140	struct coro {	182	struct coro {
141	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
142	coro_cctx *cctx;	184	coro_cctx *cctx;
143		185
144	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
145	AV *args;	187	AV *args;
146	int refcnt;	188	int refcnt;
147	int flags;	189	int save; /* CORO_SAVE flags */
		190	int flags; /* CF_ flags */
148		191
149	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
150	AV *defav;	193	AV defav; / @_ */
151	SV *defsv;	194	SV defsv; / $_ */
152	SV *errsv;	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
		197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
153		199
154	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
155	# include "state.h"	201	# include "state.h"
156	#undef VAR	202	#undef VAR
157		203
158	/* coro process data */	204	/* coro process data */
159	int prio;	205	int prio;
		206
		207	/* linked list */
		208	struct coro next, prev;
		209	HV hv; / the perl hash associated with this coro, if any */
160	};	210	};
161		211
162	typedef struct coro *Coro__State;	212	typedef struct coro *Coro__State;
163	typedef struct coro *Coro__State_or_hashref;	213	typedef struct coro *Coro__State_or_hashref;
164		214
		215	/ Coro ******************************************************************/
		216
		217	#define PRIO_MAX 3
		218	#define PRIO_HIGH 1
		219	#define PRIO_NORMAL 0
		220	#define PRIO_LOW -1
		221	#define PRIO_IDLE -3
		222	#define PRIO_MIN -4
		223
		224	/* for Coro.pm */
		225	static SV *coro_current;
		226	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		227	static int coro_nready;
		228	static struct coro *coro_first;
		229
		230	/ lowlevel stuff ********************************************************/
		231
165	static AV *	232	static AV *
166	coro_clone_padlist (CV *cv)	233	coro_clone_padlist (pTHX_ CV *cv)
167	{	234	{
168	AV *padlist = CvPADLIST (cv);	235	AV *padlist = CvPADLIST (cv);
169	AV newpadlist, newpad;	236	AV newpadlist, newpad;
170		237
171	newpadlist = newAV ();	238	newpadlist = newAV ();
…		…
183		250
184	return newpadlist;	251	return newpadlist;
185	}	252	}
186		253
187	static void	254	static void
188	free_padlist (AV *padlist)	255	free_padlist (pTHX_ AV *padlist)
189	{	256	{
190	/* may be during global destruction */	257	/* may be during global destruction */
191	if (SvREFCNT (padlist))	258	if (SvREFCNT (padlist))
192	{	259	{
193	I32 i = AvFILLp (padlist);	260	I32 i = AvFILLp (padlist);
…		…
214	AV *padlist;	281	AV *padlist;
215	AV av = (AV )mg->mg_obj;	282	AV av = (AV )mg->mg_obj;
216		283
217	/* casting is fun. */	284	/* casting is fun. */
218	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	285	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
219	free_padlist (padlist);	286	free_padlist (aTHX_ padlist);
220		287
221	SvREFCNT_dec (av);	288	SvREFCNT_dec (av);
222		289
223	return 0;	290	return 0;
224	}	291	}
…		…
232	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	299	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
233	? SvMAGIC (cv) \	300	? SvMAGIC (cv) \
234	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
235	: 0	302	: 0
236		303
		304	static struct coro *
		305	SvSTATE_ (pTHX_ SV *coro)
		306	{
		307	HV *stash;
		308	MAGIC *mg;
		309
		310	if (SvROK (coro))
		311	coro = SvRV (coro);
		312
		313	stash = SvSTASH (coro);
		314	if (stash != coro_stash && stash != coro_state_stash)
		315	{
		316	/* very slow, but rare, check */
		317	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		318	croak ("Coro::State object required");
		319	}
		320
		321	mg = CORO_MAGIC (coro);
		322	return (struct coro *)mg->mg_ptr;
		323	}
		324
		325	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		326
237	/* the next two functions merely cache the padlists */	327	/* the next two functions merely cache the padlists */
238	static void	328	static void
239	get_padlist (CV *cv)	329	get_padlist (pTHX_ CV *cv)
240	{	330	{
241	MAGIC *mg = CORO_MAGIC (cv);	331	MAGIC *mg = CORO_MAGIC (cv);
242	AV *av;	332	AV *av;
243		333
244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	334	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	335	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
246	else	336	else
247	{	337	{
248	#if 0	338	#if CORO_PREFER_PERL_FUNCTIONS
249	/* this is probably cleaner, but also slower? */	339	/* this is probably cleaner, but also slower? */
250	CV *cp = Perl_cv_clone (cv);	340	CV *cp = Perl_cv_clone (cv);
251	CvPADLIST (cv) = CvPADLIST (cp);	341	CvPADLIST (cv) = CvPADLIST (cp);
252	CvPADLIST (cp) = 0;	342	CvPADLIST (cp) = 0;
253	SvREFCNT_dec (cp);	343	SvREFCNT_dec (cp);
254	#else	344	#else
255	CvPADLIST (cv) = coro_clone_padlist (cv);	345	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
256	#endif	346	#endif
257	}	347	}
258	}	348	}
259		349
260	static void	350	static void
261	put_padlist (CV *cv)	351	put_padlist (pTHX_ CV *cv)
262	{	352	{
263	MAGIC *mg = CORO_MAGIC (cv);	353	MAGIC *mg = CORO_MAGIC (cv);
264	AV *av;	354	AV *av;
265		355
266	if (!mg)	356	if (!mg)
…		…
277	av_extend (av, AvMAX (av) + 1);	367	av_extend (av, AvMAX (av) + 1);
278		368
279	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	369	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
280	}	370	}
281		371
		372	/ load & save, init *****************************************************/
		373
282	#define SB do {	374	#define SB do {
283	#define SE } while (0)	375	#define SE } while (0)
284		376
285	#define LOAD(state) load_state((state));
286	#define SAVE(state,flags) save_state((state),(flags));
287
288	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	377	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
289		378
290	static void	379	static void
291	load_state(Coro__State c)	380	load_perl (pTHX_ Coro__State c)
292	{	381	{
293	#define VAR(name,type) PL_ ## name = c->name;	382	#define VAR(name,type) PL_ ## name = c->name;
294	# include "state.h"	383	# include "state.h"
295	#undef VAR	384	#undef VAR
296		385
297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	386	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	387	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
299	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	388	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		389	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		390
		391	if (c->irssv)
		392	{
		393	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		394	{
		395	SvREFCNT_dec (c->irssv);
		396	c->irssv = 0;
		397	}
		398	else
		399	{
		400	REPLACE_SV (PL_rs, c->irssv);
		401	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		402	sv_setsv (c->irssv_sv, PL_rs);
		403	}
		404	}
300		405
301	{	406	{
302	dSP;	407	dSP;
303	CV *cv;	408	CV *cv;
304		409
305	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
306	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
307	{	412	{
308	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
309	CvDEPTH (cv) = PTR2IV (POPs);	414	CvDEPTH (cv) = PTR2IV (POPs);
310	CvPADLIST (cv) = (AV *)POPs;	415	CvPADLIST (cv) = (AV *)POPs;
311	}	416	}
312		417
313	PUTBACK;	418	PUTBACK;
314	}	419	}
315	}	420	}
316		421
317	static void	422	static void
318	save_state(Coro__State c, int flags)	423	save_perl (pTHX_ Coro__State c)
319	{	424	{
320	{	425	{
321	dSP;	426	dSP;
322	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
323	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
326	/*	431	/*
327	* 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
328	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
329	*/	434	*/
330		435
331	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
332	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
333	for (;;)	438	for (;;)
334	{	439	{
335	while (cxix >= 0)	440	while (cxix >= 0)
336	{	441	{
337	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
338		443
339	if (CxTYPE(cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
340	{	445	{
341	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
342		447
343	if (CvDEPTH (cv))	448	if (CvDEPTH (cv))
344	{	449	{
345	EXTEND (SP, 3);	450	EXTEND (SP, 3);
346
347	PUSHs ((SV *)CvPADLIST(cv));	451	PUSHs ((SV *)CvPADLIST (cv));
348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
349	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
350		454
351	CvDEPTH (cv) = 0;	455	CvDEPTH (cv) = 0;
352	get_padlist (cv);	456	get_padlist (aTHX_ cv);
353	}	457	}
354	}	458	}
355	#ifdef CXt_FORMAT
356	else if (CxTYPE(cx) == CXt_FORMAT)
357	{
358	/* I never used formats, so how should I know how these are implemented? */
359	/* my bold guess is as a simple, plain sub... */
360	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
361	}
362	#endif
363	}	459	}
364		460
365	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
366	break;	462	break;
367		463
368	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
369	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
370	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
371	}	467	}
372		468
373	PUTBACK;	469	PUTBACK;
374	}	470	}
375		471
376	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
377	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
378	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		475	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		476	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
379		477
380	#define VAR(name,type)c->name = PL_ ## name;	478	#define VAR(name,type)c->name = PL_ ## name;
381	# include "state.h"	479	# include "state.h"
382	#undef VAR	480	#undef VAR
383	}	481	}
…		…
386	* allocate various perl stacks. This is an exact copy	484	* allocate various perl stacks. This is an exact copy
387	* of perl.c:init_stacks, except that it uses less memory	485	* of perl.c:init_stacks, except that it uses less memory
388	* on the (sometimes correct) assumption that coroutines do	486	* on the (sometimes correct) assumption that coroutines do
389	* not usually need a lot of stackspace.	487	* not usually need a lot of stackspace.
390	*/	488	*/
		489	#if CORO_PREFER_PERL_FUNCTIONS
		490	# define coro_init_stacks init_stacks
		491	#else
391	static void	492	static void
392	coro_init_stacks ()	493	coro_init_stacks (pTHX)
393	{	494	{
394	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	495	PL_curstackinfo = new_stackinfo(64, 6);
395	PL_curstackinfo->si_type = PERLSI_MAIN;	496	PL_curstackinfo->si_type = PERLSI_MAIN;
396	PL_curstack = PL_curstackinfo->si_stack;	497	PL_curstack = PL_curstackinfo->si_stack;
397	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	498	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
398		499
399	PL_stack_base = AvARRAY(PL_curstack);	500	PL_stack_base = AvARRAY(PL_curstack);
400	PL_stack_sp = PL_stack_base;	501	PL_stack_sp = PL_stack_base;
401	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	502	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
402		503
403	New(50,PL_tmps_stack,96,SV*);	504	New(50,PL_tmps_stack,64,SV*);
404	PL_tmps_floor = -1;	505	PL_tmps_floor = -1;
405	PL_tmps_ix = -1;	506	PL_tmps_ix = -1;
406	PL_tmps_max = 96;	507	PL_tmps_max = 64;
407		508
408	New(54,PL_markstack,16,I32);	509	New(54,PL_markstack,16,I32);
409	PL_markstack_ptr = PL_markstack;	510	PL_markstack_ptr = PL_markstack;
410	PL_markstack_max = PL_markstack + 16;	511	PL_markstack_max = PL_markstack + 16;
411		512
…		…
415		516
416	New(54,PL_scopestack,16,I32);	517	New(54,PL_scopestack,16,I32);
417	PL_scopestack_ix = 0;	518	PL_scopestack_ix = 0;
418	PL_scopestack_max = 16;	519	PL_scopestack_max = 16;
419		520
420	New(54,PL_savestack,96,ANY);	521	New(54,PL_savestack,64,ANY);
421	PL_savestack_ix = 0;	522	PL_savestack_ix = 0;
422	PL_savestack_max = 96;	523	PL_savestack_max = 64;
423		524
424	#if !PERL_VERSION_ATLEAST (5,9,0)	525	#if !PERL_VERSION_ATLEAST (5,9,0)
425	New(54,PL_retstack,8,OP*);	526	New(54,PL_retstack,4,OP*);
426	PL_retstack_ix = 0;	527	PL_retstack_ix = 0;
427	PL_retstack_max = 8;	528	PL_retstack_max = 4;
428	#endif	529	#endif
429	}	530	}
		531	#endif
430		532
431	/*	533	/*
432	* destroy the stacks, the callchain etc...	534	* destroy the stacks, the callchain etc...
433	*/	535	*/
434	static void	536	static void
435	coro_destroy_stacks ()	537	coro_destroy_stacks (pTHX)
436	{	538	{
437	if (!IN_DESTRUCT)	539	if (!IN_DESTRUCT)
438	{	540	{
439	/* is this ugly, I ask? */	541	/* restore all saved variables and stuff */
440	LEAVE_SCOPE (0);	542	LEAVE_SCOPE (0);
		543	assert (PL_tmps_floor == -1);
441		544
442	/* sure it is, but more important: is it correct?? :/ */	545	/* free all temporaries */
443	FREETMPS;	546	FREETMPS;
		547	assert (PL_tmps_ix == -1);
444		548
		549	/* unwind all extra stacks */
445	/POPSTACK_TO (PL_mainstack);//D//use/	550	POPSTACK_TO (PL_mainstack);
		551
		552	/* unwind main stack */
		553	dounwind (-1);
446	}	554	}
447		555
448	while (PL_curstackinfo->si_next)	556	while (PL_curstackinfo->si_next)
449	PL_curstackinfo = PL_curstackinfo->si_next;	557	PL_curstackinfo = PL_curstackinfo->si_next;
450		558
451	while (PL_curstackinfo)	559	while (PL_curstackinfo)
452	{	560	{
453	PERL_SI *p = PL_curstackinfo->si_prev;	561	PERL_SI *p = PL_curstackinfo->si_prev;
454		562
455	{ /D//remove/
456	dSP;
457	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
458	PUTBACK; /* possibly superfluous */
459	}
460
461	if (!IN_DESTRUCT)	563	if (!IN_DESTRUCT)
462	{
463	dounwind (-1);/D//remove/
464	SvREFCNT_dec (PL_curstackinfo->si_stack);	564	SvREFCNT_dec (PL_curstackinfo->si_stack);
465	}
466		565
467	Safefree (PL_curstackinfo->si_cxstack);	566	Safefree (PL_curstackinfo->si_cxstack);
468	Safefree (PL_curstackinfo);	567	Safefree (PL_curstackinfo);
469	PL_curstackinfo = p;	568	PL_curstackinfo = p;
470	}	569	}
…		…
476	#if !PERL_VERSION_ATLEAST (5,9,0)	575	#if !PERL_VERSION_ATLEAST (5,9,0)
477	Safefree (PL_retstack);	576	Safefree (PL_retstack);
478	#endif	577	#endif
479	}	578	}
480		579
		580	static size_t
		581	coro_rss (struct coro *coro)
		582	{
		583	size_t rss = sizeof (coro);
		584
		585	if (coro->mainstack)
		586	{
		587	if (coro->flags & CF_RUNNING)
		588	{
		589	#define VAR(name,type)coro->name = PL_ ## name;
		590	# include "state.h"
		591	#undef VAR
		592	}
		593
		594	rss += sizeof (coro->curstackinfo);
		595	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		596	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		597	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		598	rss += coro->tmps_max * sizeof (SV *);
		599	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		600	rss += coro->scopestack_max * sizeof (I32);
		601	rss += coro->savestack_max * sizeof (ANY);
		602
		603	#if !PERL_VERSION_ATLEAST (5,9,0)
		604	rss += coro->retstack_max * sizeof (OP *);
		605	#endif
		606	}
		607
		608	return rss;
		609	}
		610
		611	/ coroutine stack handling **********************************************/
		612
481	static void	613	static void
482	setup_coro (struct coro *coro)	614	setup_coro (pTHX_ struct coro *coro)
483	{	615	{
484	/*	616	/*
485	* emulate part of the perl startup here.	617	* emulate part of the perl startup here.
486	*/	618	*/
487
488	coro_init_stacks ();	619	coro_init_stacks (aTHX);
489		620
		621	PL_runops = RUNOPS_DEFAULT;
		622	PL_curcop = &PL_compiling;
		623	PL_in_eval = EVAL_NULL;
490	PL_curcop = 0;	624	PL_comppad = 0;
491	PL_in_eval = 0;
492	PL_curpm = 0;	625	PL_curpm = 0;
		626	PL_localizing = 0;
		627	PL_dirty = 0;
		628	PL_restartop = 0;
493		629
494	{	630	{
495	dSP;	631	dSP;
496	LOGOP myop;	632	LOGOP myop;
497		633
498	/* I have no idea why this is needed, but it is */
499	PUSHMARK (SP);
500
501	SvREFCNT_dec (GvAV (PL_defgv));	634	SvREFCNT_dec (GvAV (PL_defgv));
502	GvAV (PL_defgv) = coro->args; coro->args = 0;	635	GvAV (PL_defgv) = coro->args; coro->args = 0;
503		636
504	Zero (&myop, 1, LOGOP);	637	Zero (&myop, 1, LOGOP);
505	myop.op_next = Nullop;	638	myop.op_next = Nullop;
506	myop.op_flags = OPf_WANT_VOID;	639	myop.op_flags = OPf_WANT_VOID;
507		640
		641	PUSHMARK (SP);
		642	XPUSHs (av_shift (GvAV (PL_defgv)));
		643	PUTBACK;
508	PL_op = (OP *)&myop;	644	PL_op = (OP *)&myop;
509
510	PUSHMARK (SP);
511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
512	PUTBACK;
513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	645	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
514	SPAGAIN;	646	SPAGAIN;
515
516	ENTER; /* necessary e.g. for dounwind */
517	}	647	}
		648
		649	ENTER; /* necessary e.g. for dounwind */
518	}	650	}
519		651
520	static void	652	static void
521	free_coro_mortal ()	653	free_coro_mortal (pTHX)
522	{	654	{
523	if (coro_mortal)	655	if (coro_mortal)
524	{	656	{
525	SvREFCNT_dec (coro_mortal);	657	SvREFCNT_dec (coro_mortal);
526	coro_mortal = 0;	658	coro_mortal = 0;
527	}	659	}
528	}	660	}
529		661
		662	static int
		663	runops_trace (pTHX)
		664	{
		665	COP *oldcop = 0;
		666	int oldcxix = -2;
		667	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		668	coro_cctx *cctx = coro->cctx;
		669
		670	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		671	{
		672	PERL_ASYNC_CHECK ();
		673
		674	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		675	{
		676	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		677	SV bot, top;
		678	AV av = newAV (); / return values */
		679	SV **cb;
		680	runops_proc_t old_runops = PL_runops;
		681	dSP;
		682	ENTER;
		683	SAVETMPS;
		684	EXTEND (SP, 3);
		685	PL_runops = RUNOPS_DEFAULT;
		686
		687	GV *gv = CvGV (cx->blk_sub.cv);
		688	SV *fullname = sv_2mortal (newSV (0));
		689	if (isGV (gv))
		690	gv_efullname3 (fullname, gv, 0);
		691
		692	bot = PL_stack_base + cx->blk_oldsp + 1;
		693	top = cx->blk_gimme == G_ARRAY ? SP + 1
		694	: cx->blk_gimme == G_SCALAR ? bot + 1
		695	: bot;
		696
		697	while (bot < top)
		698	av_push (av, SvREFCNT_inc (*bot++));
		699
		700	PUSHMARK (SP);
		701	PUSHs (&PL_sv_no);
		702	PUSHs (fullname);
		703	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		704	PUTBACK;
		705	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		706	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		707	SPAGAIN;
		708
		709	FREETMPS;
		710	LEAVE;
		711	PL_runops = old_runops;
		712	}
		713
		714	if (oldcop != PL_curcop)
		715	{
		716	oldcop = PL_curcop;
		717
		718	if (PL_curcop != &PL_compiling)
		719	{
		720	SV **cb;
		721	runops_proc_t old_runops = PL_runops;
		722	dSP;
		723	ENTER;
		724	SAVETMPS;
		725	EXTEND (SP, 3);
		726	PL_runops = RUNOPS_DEFAULT;
		727
		728	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		729	{
		730	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		731
		732	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		733	{
		734	GV *gv = CvGV (cx->blk_sub.cv);
		735	SV *fullname = sv_2mortal (newSV (0));
		736	if (isGV (gv))
		737	gv_efullname3 (fullname, gv, 0);
		738
		739	PUSHMARK (SP);
		740	PUSHs (&PL_sv_yes);
		741	PUSHs (fullname);
		742	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		743	PUTBACK;
		744	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		745	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		746	SPAGAIN;
		747	}
		748
		749	oldcxix = cxstack_ix;
		750	}
		751
		752	if (cctx->flags & CC_TRACE_LINE)
		753	{
		754	PUSHMARK (SP);
		755	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		756	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		757	PUTBACK;
		758	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		759	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		760	SPAGAIN;
		761	}
		762
		763	FREETMPS;
		764	LEAVE;
		765	PL_runops = old_runops;
		766	}
		767	}
		768	}
		769
		770	TAINT_NOT;
		771	return 0;
		772	}
		773
		774	/* inject a fake call to Coro::State::_cctx_init into the execution */
		775	/* _cctx_init should be careful, as it could be called at almost any time */
		776	/* during execution of a perl program */
530	static void NOINLINE	777	static void NOINLINE
531	prepare_cctx (coro_cctx *cctx)	778	prepare_cctx (pTHX_ coro_cctx *cctx)
532	{	779	{
533	dSP;	780	dSP;
534	LOGOP myop;	781	LOGOP myop;
535		782
		783	PL_top_env = &PL_start_env;
		784
		785	if (cctx->flags & CC_TRACE)
		786	PL_runops = runops_trace;
		787
536	Zero (&myop, 1, LOGOP);	788	Zero (&myop, 1, LOGOP);
537	myop.op_next = PL_op;	789	myop.op_next = PL_op;
538	myop.op_flags = OPf_WANT_VOID;	790	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
539
540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
541		791
542	PUSHMARK (SP);	792	PUSHMARK (SP);
		793	EXTEND (SP, 2);
		794	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	795	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
544	PUTBACK;	796	PUTBACK;
		797	PL_op = (OP *)&myop;
545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	798	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
546	SPAGAIN;	799	SPAGAIN;
547	}	800	}
548		801
		802	/*
		803	* this is a _very_ stripped down perl interpreter ;)
		804	*/
549	static void	805	static void
550	coro_run (void *arg)	806	coro_run (void *arg)
551	{	807	{
		808	dTHX;
		809
552	/* coro_run is the alternative epilogue of transfer() */	810	/* coro_run is the alternative tail of transfer(), so unlock here. */
553	UNLOCK;	811	UNLOCK;
554		812
		813	/* we now skip the entersub that lead to transfer() */
		814	PL_op = PL_op->op_next;
		815
		816	/* inject a fake subroutine call to cctx_init */
		817	prepare_cctx (aTHX_ (coro_cctx *)arg);
		818
		819	/* somebody or something will hit me for both perl_run and PL_restartop */
		820	PL_restartop = PL_op;
		821	perl_run (PL_curinterp);
		822
555	/*	823	/*
556	* this is a _very_ stripped down perl interpreter ;)	824	* If perl-run returns we assume exit() was being called or the coro
		825	* fell off the end, which seems to be the only valid (non-bug)
		826	* reason for perl_run to return. We try to exit by jumping to the
		827	* bootstrap-time "top" top_env, as we cannot restore the "main"
		828	* coroutine as Coro has no such concept
557	*/	829	*/
558	PL_top_env = &PL_start_env;	830	PL_top_env = main_top_env;
559		831	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
560	/* inject call to cctx_init */
561	prepare_cctx ((coro_cctx *)arg);
562
563	/* somebody will hit me for both perl_run and PL_restartop */
564	perl_run (PL_curinterp);
565
566	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
567	abort ();
568	}	832	}
569		833
570	static coro_cctx *	834	static coro_cctx *
571	cctx_new ()	835	cctx_new ()
572	{	836	{
573	coro_cctx *cctx;	837	coro_cctx *cctx;
		838	void *stack_start;
		839	size_t stack_size;
574		840
575	++cctx_count;	841	++cctx_count;
576		842
577	New (0, cctx, 1, coro_cctx);	843	Newz (0, cctx, 1, coro_cctx);
578		844
579	#if HAVE_MMAP	845	#if HAVE_MMAP
580		846
581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	847	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
582	/* mmap suppsedly does allocate-on-write for us */	848	/* mmap supposedly does allocate-on-write for us */
583	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	849	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
584		850
585	if (cctx->sptr == (void *)-1)	851	if (cctx->sptr != (void *)-1)
586	{
587	perror ("FATAL: unable to mmap stack for coroutine");
588	_exit (EXIT_FAILURE);
589	}	852	{
590
591	# if STACKGUARD	853	# if CORO_STACKGUARD
592	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	854	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
593	# endif	855	# endif
		856	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		857	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		858	cctx->flags \|= CC_MAPPED;
		859	}
		860	else
		861	#endif
		862	{
		863	cctx->ssize = coro_stacksize * (long)sizeof (long);
		864	New (0, cctx->sptr, coro_stacksize, long);
594		865
595	#else
596
597	cctx->ssize = STACKSIZE * (long)sizeof (long);
598	New (0, cctx->sptr, STACKSIZE, long);
599
600	if (!cctx->sptr)	866	if (!cctx->sptr)
601	{	867	{
602	perror ("FATAL: unable to malloc stack for coroutine");	868	perror ("FATAL: unable to allocate stack for coroutine");
603	_exit (EXIT_FAILURE);	869	_exit (EXIT_FAILURE);
604	}	870	}
605		871
606	#endif	872	stack_start = cctx->sptr;
		873	stack_size = cctx->ssize;
		874	}
607		875
608	#if USE_VALGRIND	876	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
609	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
610	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
611	cctx->ssize + (char *)cctx->sptr
612	);
613	#endif
614
615	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	877	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
616		878
617	return cctx;	879	return cctx;
618	}	880	}
619		881
620	static void	882	static void
…		…
623	if (!cctx)	885	if (!cctx)
624	return;	886	return;
625		887
626	--cctx_count;	888	--cctx_count;
627		889
628	#if USE_VALGRIND	890	#if CORO_USE_VALGRIND
629	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	891	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
630	#endif	892	#endif
631		893
632	#if HAVE_MMAP	894	#if HAVE_MMAP
		895	if (cctx->flags & CC_MAPPED)
633	munmap (cctx->sptr, cctx->ssize);	896	munmap (cctx->sptr, cctx->ssize);
634	#else	897	else
		898	#endif
635	Safefree (cctx->sptr);	899	Safefree (cctx->sptr);
636	#endif
637		900
638	Safefree (cctx);	901	Safefree (cctx);
639	}	902	}
640		903
641	static coro_cctx *	904	static coro_cctx *
642	cctx_get ()	905	cctx_get (pTHX)
643	{	906	{
644	coro_cctx *cctx;
645
646	if (cctx_first)	907	while (cctx_first)
647	{	908	{
648	cctx = cctx_first;	909	coro_cctx *cctx = cctx_first;
649	cctx_first = cctx->next;	910	cctx_first = cctx->next;
650	--cctx_idle;	911	--cctx_idle;
651	}	912
652	else	913	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
653	{	914	return cctx;
654	cctx = cctx_new ();	915
655	PL_op = PL_op->op_next;	916	cctx_destroy (cctx);
656	}	917	}
657		918
658	return cctx;	919	return cctx_new ();
659	}	920	}
660		921
661	static void	922	static void
662	cctx_put (coro_cctx *cctx)	923	cctx_put (coro_cctx *cctx)
663	{	924	{
…		…
666	{	927	{
667	coro_cctx *first = cctx_first;	928	coro_cctx *first = cctx_first;
668	cctx_first = first->next;	929	cctx_first = first->next;
669	--cctx_idle;	930	--cctx_idle;
670		931
671	assert (!first->inuse);
672	cctx_destroy (first);	932	cctx_destroy (first);
673	}	933	}
674		934
675	++cctx_idle;	935	++cctx_idle;
676	cctx->next = cctx_first;	936	cctx->next = cctx_first;
677	cctx_first = cctx;	937	cctx_first = cctx;
678	}	938	}
679		939
680	/* never call directly, always through the coro_state_transfer global variable */	940	/ coroutine switching ***************************************************/
		941
681	static void NOINLINE	942	static void NOINLINE
		943	transfer_check (pTHX_ struct coro prev, struct coro next)
		944	{
		945	if (prev != next)
		946	{
		947	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		948	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		949
		950	if (next->flags & CF_RUNNING)
		951	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		952
		953	if (next->flags & CF_DESTROYED)
		954	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		955
		956	if (PL_lex_state != LEX_NOTPARSING)
		957	croak ("Coro::State::transfer called while parsing, but this is not supported");
		958	}
		959	}
		960
		961	/* always use the TRANSFER macro */
		962	static void NOINLINE
682	transfer (struct coro prev, struct coro next, int flags)	963	transfer (pTHX_ struct coro prev, struct coro next)
683	{	964	{
684	dSTACKLEVEL;	965	dSTACKLEVEL;
685		966
686	/* sometimes transfer is only called to set idle_sp */	967	/* sometimes transfer is only called to set idle_sp */
687	if (flags == TRANSFER_SET_STACKLEVEL)	968	if (!next)
		969	{
688	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	970	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		971	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		972	}
689	else if (prev != next)	973	else if (prev != next)
690	{	974	{
691	coro_cctx *prev__cctx;	975	coro_cctx *prev__cctx;
692		976
693	if (!prev->cctx)	977	if (prev->flags & CF_NEW)
694	{	978	{
695	/* create a new empty context */	979	/* create a new empty context */
696	Newz (0, prev->cctx, 1, coro_cctx);	980	Newz (0, prev->cctx, 1, coro_cctx);
697	prev->cctx->inuse = 1;	981	prev->flags &= ~CF_NEW;
698	prev->flags \|= CF_RUNNING;	982	prev->flags \|= CF_RUNNING;
699	}	983	}
700
701	if (!prev->flags & CF_RUNNING)
702	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
703
704	if (next->flags & CF_RUNNING)
705	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
706		984
707	prev->flags &= ~CF_RUNNING;	985	prev->flags &= ~CF_RUNNING;
708	next->flags \|= CF_RUNNING;	986	next->flags \|= CF_RUNNING;
709		987
710	LOCK;	988	LOCK;
711		989
712	if (next->mainstack)	990	if (next->flags & CF_NEW)
713	{	991	{
714	/* coroutine already started */	992	/* need to start coroutine */
715	SAVE (prev, flags);	993	next->flags &= ~CF_NEW;
716	LOAD (next);	994	/* first get rid of the old state */
		995	save_perl (aTHX_ prev);
		996	/* setup coroutine call */
		997	setup_coro (aTHX_ next);
717	}	998	}
718	else	999	else
719	{	1000	{
720	/* need to start coroutine */	1001	/* coroutine already started */
721	/* first get rid of the old state */	1002	save_perl (aTHX_ prev);
722	SAVE (prev, -1);	1003	load_perl (aTHX_ next);
723	/* setup coroutine call */
724	setup_coro (next);
725	/* need a new stack */
726	assert (!next->stack);
727	}	1004	}
728		1005
729	prev__cctx = prev->cctx;	1006	prev__cctx = prev->cctx;
730		1007
731	/* possibly "free" the cctx */	1008	/* possibly "free" the cctx */
732	if (prev__cctx->idle_sp == STACKLEVEL)	1009	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
733	{	1010	{
734	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1011	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
735	assert (PL_top_env == prev__cctx->top_env);	1012	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1013
		1014	prev->cctx = 0;
736		1015
737	cctx_put (prev__cctx);	1016	cctx_put (prev__cctx);
738	prev->cctx = 0;
739	}	1017	}
740		1018
741	if (!next->cctx)	1019	if (!next->cctx)
742	next->cctx = cctx_get ();	1020	next->cctx = cctx_get (aTHX);
743		1021
744	if (prev__cctx != next->cctx)	1022	if (prev__cctx != next->cctx)
745	{	1023	{
746	assert ( prev__cctx->inuse);
747	assert (!next->cctx->inuse);
748
749	prev__cctx->inuse = 0;
750	next->cctx->inuse = 1;
751
752	prev__cctx->top_env = PL_top_env;	1024	prev__cctx->top_env = PL_top_env;
753	PL_top_env = next->cctx->top_env;	1025	PL_top_env = next->cctx->top_env;
754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1026	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
755	}	1027	}
756		1028
757	free_coro_mortal ();	1029	free_coro_mortal (aTHX);
758
759	UNLOCK;	1030	UNLOCK;
760	}	1031	}
761	}	1032	}
762		1033
763	struct transfer_args	1034	struct transfer_args
764	{	1035	{
765	struct coro prev, next;	1036	struct coro prev, next;
766	int flags;
767	};	1037	};
768		1038
769	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1039	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1040	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
770		1041
		1042	/ high level stuff ******************************************************/
		1043
771	static void	1044	static int
772	coro_state_destroy (struct coro *coro)	1045	coro_state_destroy (pTHX_ struct coro *coro)
773	{	1046	{
774	if (coro->refcnt--)	1047	if (coro->flags & CF_DESTROYED)
775	return;	1048	return 0;
776		1049
		1050	coro->flags \|= CF_DESTROYED;
		1051
777	if (coro->flags & CF_RUNNING)	1052	if (coro->flags & CF_READY)
778	croak ("FATAL: tried to destroy currently running coroutine");	1053	{
		1054	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1055	/* alternative: look through all ready queues and remove the coro */
		1056	LOCK;
		1057	--coro_nready;
		1058	UNLOCK;
		1059	}
		1060	else
		1061	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
779		1062
780	if (coro->mainstack && coro->mainstack != main_mainstack)	1063	if (coro->mainstack && coro->mainstack != main_mainstack)
781	{	1064	{
782	struct coro temp;	1065	struct coro temp;
783		1066
784	SAVE ((&temp), TRANSFER_SAVE_ALL);	1067	assert (!(coro->flags & CF_RUNNING));
785	LOAD (coro);
786		1068
		1069	Zero (&temp, 1, struct coro);
		1070	temp.save = CORO_SAVE_ALL;
		1071
		1072	if (coro->flags & CF_RUNNING)
		1073	croak ("FATAL: tried to destroy currently running coroutine");
		1074
		1075	save_perl (aTHX_ &temp);
		1076	load_perl (aTHX_ coro);
		1077
787	coro_destroy_stacks ();	1078	coro_destroy_stacks (aTHX);
788		1079
789	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1080	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
790		1081
791	coro->mainstack = 0;	1082	coro->mainstack = 0;
792	}	1083	}
793		1084
794	cctx_destroy (coro->cctx);	1085	cctx_destroy (coro->cctx);
795	SvREFCNT_dec (coro->args);	1086	SvREFCNT_dec (coro->args);
796	Safefree (coro);	1087
		1088	if (coro->next) coro->next->prev = coro->prev;
		1089	if (coro->prev) coro->prev->next = coro->next;
		1090	if (coro == coro_first) coro_first = coro->next;
		1091
		1092	return 1;
797	}	1093	}
798		1094
799	static int	1095	static int
800	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1096	coro_state_free (pTHX_ SV sv, MAGIC mg)
801	{	1097	{
802	struct coro coro = (struct coro )mg->mg_ptr;	1098	struct coro coro = (struct coro )mg->mg_ptr;
803	mg->mg_ptr = 0;	1099	mg->mg_ptr = 0;
804		1100
		1101	coro->hv = 0;
		1102
		1103	if (--coro->refcnt < 0)
		1104	{
805	coro_state_destroy (coro);	1105	coro_state_destroy (aTHX_ coro);
		1106	Safefree (coro);
		1107	}
806		1108
807	return 0;	1109	return 0;
808	}	1110	}
809		1111
810	static int	1112	static int
…		…
817	return 0;	1119	return 0;
818	}	1120	}
819		1121
820	static MGVTBL coro_state_vtbl = {	1122	static MGVTBL coro_state_vtbl = {
821	0, 0, 0, 0,	1123	0, 0, 0, 0,
822	coro_state_clear,	1124	coro_state_free,
823	0,	1125	0,
824	#ifdef MGf_DUP	1126	#ifdef MGf_DUP
825	coro_state_dup,	1127	coro_state_dup,
826	#else	1128	#else
827	# define MGf_DUP 0	1129	# define MGf_DUP 0
828	#endif	1130	#endif
829	};	1131	};
830		1132
831	static struct coro *
832	SvSTATE (SV *coro)
833	{
834	HV *stash;
835	MAGIC *mg;
836
837	if (SvROK (coro))
838	coro = SvRV (coro);
839
840	stash = SvSTASH (coro);
841	if (stash != coro_stash && stash != coro_state_stash)
842	{
843	/* very slow, but rare, check */
844	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
845	croak ("Coro::State object required");
846	}
847
848	mg = SvMAGIC (coro);
849	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;
851	}
852
853	static void	1133	static void
854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1134	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
855	{	1135	{
856	ta->prev = SvSTATE (prev);	1136	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	1137	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;	1138	TRANSFER_CHECK (*ta);
859	}	1139	}
860		1140
861	static void	1141	static void
862	api_transfer (SV prev, SV next, int flags)	1142	api_transfer (SV prev_sv, SV next_sv)
863	{	1143	{
864	dTHX;	1144	dTHX;
865	struct transfer_args ta;	1145	struct transfer_args ta;
866		1146
867	prepare_transfer (&ta, prev, next, flags);	1147	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
868	TRANSFER (ta);	1148	TRANSFER (ta);
869	}	1149	}
870		1150
		1151	static int
		1152	api_save (SV *coro_sv, int new_save)
		1153	{
		1154	dTHX;
		1155	struct coro *coro = SvSTATE (coro_sv);
		1156	int old_save = coro->save;
		1157
		1158	if (new_save >= 0)
		1159	coro->save = new_save;
		1160
		1161	return old_save;
		1162	}
		1163
871	/ Coro ******************************************************************/	1164	/ Coro ******************************************************************/
872		1165
873	#define PRIO_MAX 3
874	#define PRIO_HIGH 1
875	#define PRIO_NORMAL 0
876	#define PRIO_LOW -1
877	#define PRIO_IDLE -3
878	#define PRIO_MIN -4
879
880	/* for Coro.pm */
881	static GV coro_current, coro_idle;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;
884
885	static void	1166	static void
886	coro_enq (SV *coro_sv)	1167	coro_enq (pTHX_ SV *coro_sv)
887	{	1168	{
888	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1169	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
889	coro_nready++;
890	}	1170	}
891		1171
892	static SV *	1172	static SV *
893	coro_deq (int min_prio)	1173	coro_deq (pTHX_ int min_prio)
894	{	1174	{
895	int prio = PRIO_MAX - PRIO_MIN;	1175	int prio = PRIO_MAX - PRIO_MIN;
896		1176
897	min_prio -= PRIO_MIN;	1177	min_prio -= PRIO_MIN;
898	if (min_prio < 0)	1178	if (min_prio < 0)
899	min_prio = 0;	1179	min_prio = 0;
900		1180
901	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1181	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
902	if (AvFILLp (coro_ready [prio]) >= 0)	1182	if (AvFILLp (coro_ready [prio]) >= 0)
903	{
904	coro_nready--;
905	return av_shift (coro_ready [prio]);	1183	return av_shift (coro_ready [prio]);
906	}
907		1184
908	return 0;	1185	return 0;
909	}	1186	}
910		1187
911	static int	1188	static int
912	api_ready (SV *coro_sv)	1189	api_ready (SV *coro_sv)
913	{	1190	{
		1191	dTHX;
914	struct coro *coro;	1192	struct coro *coro;
915		1193
916	if (SvROK (coro_sv))	1194	if (SvROK (coro_sv))
917	coro_sv = SvRV (coro_sv);	1195	coro_sv = SvRV (coro_sv);
918		1196
919	coro = SvSTATE (coro_sv);	1197	coro = SvSTATE (coro_sv);
920		1198
921	if (coro->flags & CF_READY)	1199	if (coro->flags & CF_READY)
922	return 0;	1200	return 0;
923		1201
924	if (coro->flags & CF_RUNNING)
925	croak ("Coro::ready called on currently running coroutine");
926
927	coro->flags \|= CF_READY;	1202	coro->flags \|= CF_READY;
928		1203
929	LOCK;	1204	LOCK;
930	coro_enq (SvREFCNT_inc (coro_sv));	1205	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1206	++coro_nready;
931	UNLOCK;	1207	UNLOCK;
932		1208
933	return 1;	1209	return 1;
934	}	1210	}
935		1211
936	static int	1212	static int
937	api_is_ready (SV *coro_sv)	1213	api_is_ready (SV *coro_sv)
938	{	1214	{
		1215	dTHX;
939	return !!SvSTATE (coro_sv)->flags & CF_READY;	1216	return !!(SvSTATE (coro_sv)->flags & CF_READY);
940	}	1217	}
941		1218
942	static void	1219	static void
943	prepare_schedule (struct transfer_args *ta)	1220	prepare_schedule (pTHX_ struct transfer_args *ta)
944	{	1221	{
945	SV current, prev, *next;	1222	SV prev_sv, next_sv;
946
947	current = GvSV (coro_current);
948		1223
949	for (;;)	1224	for (;;)
950	{	1225	{
951	LOCK;	1226	LOCK;
952	next = coro_deq (PRIO_MIN);	1227	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1228
		1229	/* nothing to schedule: call the idle handler */
		1230	if (!next_sv)
		1231	{
		1232	dSP;
		1233	UNLOCK;
		1234
		1235	ENTER;
		1236	SAVETMPS;
		1237
		1238	PUSHMARK (SP);
		1239	PUTBACK;
		1240	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1241
		1242	FREETMPS;
		1243	LEAVE;
		1244	continue;
		1245	}
		1246
		1247	ta->next = SvSTATE (next_sv);
		1248
		1249	/* cannot transfer to destroyed coros, skip and look for next */
		1250	if (ta->next->flags & CF_DESTROYED)
		1251	{
		1252	UNLOCK;
		1253	SvREFCNT_dec (next_sv);
		1254	/* coro_nready is already taken care of by destroy */
		1255	continue;
		1256	}
		1257
		1258	--coro_nready;
953	UNLOCK;	1259	UNLOCK;
954
955	if (next)
956	break;	1260	break;
957
958	{
959	dSP;
960
961	ENTER;
962	SAVETMPS;
963
964	PUSHMARK (SP);
965	PUTBACK;
966	call_sv (GvSV (coro_idle), G_DISCARD);
967
968	FREETMPS;
969	LEAVE;
970	}	1261	}
971	}
972
973	prev = SvRV (current);
974	SvRV (current) = next;
975		1262
976	/* free this only after the transfer */	1263	/* free this only after the transfer */
		1264	prev_sv = SvRV (coro_current);
		1265	ta->prev = SvSTATE (prev_sv);
		1266	TRANSFER_CHECK (*ta);
		1267	assert (ta->next->flags & CF_READY);
		1268	ta->next->flags &= ~CF_READY;
		1269	SvRV_set (coro_current, next_sv);
		1270
977	LOCK;	1271	LOCK;
978	free_coro_mortal ();	1272	free_coro_mortal (aTHX);
		1273	coro_mortal = prev_sv;
979	UNLOCK;	1274	UNLOCK;
980	coro_mortal = prev;
981
982	ta->prev = SvSTATE (prev);
983	ta->next = SvSTATE (next);
984	ta->flags = TRANSFER_SAVE_ALL;
985
986	ta->next->flags &= ~CF_READY;
987	}	1275	}
988		1276
989	static void	1277	static void
990	prepare_cede (struct transfer_args *ta)	1278	prepare_cede (pTHX_ struct transfer_args *ta)
991	{	1279	{
992	api_ready (GvSV (coro_current));	1280	api_ready (coro_current);
993
994	prepare_schedule (ta);	1281	prepare_schedule (aTHX_ ta);
		1282	}
		1283
		1284	static int
		1285	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1286	{
		1287	if (coro_nready)
		1288	{
		1289	SV *prev = SvRV (coro_current);
		1290	prepare_schedule (aTHX_ ta);
		1291	api_ready (prev);
		1292	return 1;
		1293	}
		1294	else
		1295	return 0;
995	}	1296	}
996		1297
997	static void	1298	static void
998	api_schedule (void)	1299	api_schedule (void)
999	{	1300	{
1000	dTHX;	1301	dTHX;
1001	struct transfer_args ta;	1302	struct transfer_args ta;
1002		1303
1003	prepare_schedule (&ta);	1304	prepare_schedule (aTHX_ &ta);
1004	TRANSFER (ta);	1305	TRANSFER (ta);
1005	}	1306	}
1006		1307
1007	static void	1308	static int
1008	api_cede (void)	1309	api_cede (void)
1009	{	1310	{
1010	dTHX;	1311	dTHX;
1011	struct transfer_args ta;	1312	struct transfer_args ta;
1012		1313
1013	prepare_cede (&ta);	1314	prepare_cede (aTHX_ &ta);
		1315
		1316	if (ta.prev != ta.next)
		1317	{
1014	TRANSFER (ta);	1318	TRANSFER (ta);
		1319	return 1;
		1320	}
		1321	else
		1322	return 0;
		1323	}
		1324
		1325	static int
		1326	api_cede_notself (void)
		1327	{
		1328	dTHX;
		1329	struct transfer_args ta;
		1330
		1331	if (prepare_cede_notself (aTHX_ &ta))
		1332	{
		1333	TRANSFER (ta);
		1334	return 1;
		1335	}
		1336	else
		1337	return 0;
1015	}	1338	}
1016		1339
1017	MODULE = Coro::State PACKAGE = Coro::State	1340	MODULE = Coro::State PACKAGE = Coro::State
1018		1341
1019	PROTOTYPES: DISABLE	1342	PROTOTYPES: DISABLE
…		…
1025	#endif	1348	#endif
1026	BOOT_PAGESIZE;	1349	BOOT_PAGESIZE;
1027		1350
1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1351	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029		1352
		1353	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1354	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1355	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1356	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1357
1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1358	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1359	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1032	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1360	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1361	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1362	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1363	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1364	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1033		1365
1034	main_mainstack = PL_mainstack;	1366	main_mainstack = PL_mainstack;
		1367	main_top_env = PL_top_env;
		1368
		1369	while (main_top_env->je_prev)
		1370	main_top_env = main_top_env->je_prev;
1035		1371
1036	coroapi.ver = CORO_API_VERSION;	1372	coroapi.ver = CORO_API_VERSION;
1037	coroapi.transfer = api_transfer;	1373	coroapi.transfer = api_transfer;
1038		1374
1039	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1375	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1047	HV *hv;	1383	HV *hv;
1048	int i;	1384	int i;
1049		1385
1050	Newz (0, coro, 1, struct coro);	1386	Newz (0, coro, 1, struct coro);
1051	coro->args = newAV ();	1387	coro->args = newAV ();
		1388	coro->save = CORO_SAVE_DEF;
		1389	coro->flags = CF_NEW;
1052		1390
		1391	if (coro_first) coro_first->prev = coro;
		1392	coro->next = coro_first;
		1393	coro_first = coro;
		1394
1053	hv = newHV ();	1395	coro->hv = hv = newHV ();
1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1396	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1397	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056		1398
1057	for (i = 1; i < items; i++)	1399	for (i = 1; i < items; i++)
1058	av_push (coro->args, newSVsv (ST (i)));	1400	av_push (coro->args, newSVsv (ST (i)));
1059	}	1401	}
1060	OUTPUT:	1402	OUTPUT:
		1403	RETVAL
		1404
		1405	int
		1406	save (SV *coro, int new_save = -1)
		1407	CODE:
		1408	RETVAL = api_save (coro, new_save);
		1409	OUTPUT:
		1410	RETVAL
		1411
		1412	int
		1413	save_also (SV *coro_sv, int save_also)
		1414	CODE:
		1415	{
		1416	struct coro *coro = SvSTATE (coro_sv);
		1417	RETVAL = coro->save;
		1418	coro->save \|= save_also;
		1419	}
		1420	OUTPUT:
1061	RETVAL	1421	RETVAL
1062		1422
1063	void	1423	void
1064	_set_stacklevel (...)	1424	_set_stacklevel (...)
1065	ALIAS:	1425	ALIAS:
1066	Coro::State::transfer = 1	1426	Coro::State::transfer = 1
1067	Coro::schedule = 2	1427	Coro::schedule = 2
1068	Coro::cede = 3	1428	Coro::cede = 3
1069	Coro::Cont::yield = 4	1429	Coro::cede_notself = 4
1070	CODE:	1430	CODE:
1071	{	1431	{
1072	struct transfer_args ta;	1432	struct transfer_args ta;
1073		1433
1074	switch (ix)	1434	switch (ix)
1075	{	1435	{
1076	case 0:	1436	case 0:
1077	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1437	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1078	ta.next = 0;	1438	ta.next = 0;
1079	ta.flags = TRANSFER_SET_STACKLEVEL;
1080	break;	1439	break;
1081		1440
1082	case 1:	1441	case 1:
1083	if (items != 3)	1442	if (items != 2)
1084	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1443	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1085		1444
1086	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1445	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1087	break;	1446	break;
1088		1447
1089	case 2:	1448	case 2:
1090	prepare_schedule (&ta);	1449	prepare_schedule (aTHX_ &ta);
1091	break;	1450	break;
1092		1451
1093	case 3:	1452	case 3:
1094	prepare_cede (&ta);	1453	prepare_cede (aTHX_ &ta);
1095	break;	1454	break;
1096		1455
1097	case 4:	1456	case 4:
1098	{	1457	if (!prepare_cede_notself (aTHX_ &ta))
1099	SV *yieldstack;	1458	XSRETURN_EMPTY;
1100	SV *sv;
1101	AV *defav = GvAV (PL_defgv);
1102		1459
1103	yieldstack = *hv_fetch (
1104	(HV *)SvRV (GvSV (coro_current)),
1105	"yieldstack", sizeof ("yieldstack") - 1,
1106	0
1107	);
1108
1109	/* set up @_ -- ugly */
1110	av_clear (defav);
1111	av_fill (defav, items - 1);
1112	while (items--)
1113	av_store (defav, items, SvREFCNT_inc (ST(items)));
1114
1115	sv = av_pop ((AV *)SvRV (yieldstack));
1116	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1117	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1118	ta.flags = 0;
1119	SvREFCNT_dec (sv);
1120	}
1121	break;	1460	break;
1122
1123	}	1461	}
1124		1462
		1463	BARRIER;
1125	TRANSFER (ta);	1464	TRANSFER (ta);
1126	}
1127		1465
1128	void	1466	if (GIMME_V != G_VOID && ta.next != ta.prev)
1129	_clone_state_from (SV dst, SV src)	1467	XSRETURN_YES;
		1468	}
		1469
		1470	bool
		1471	_destroy (SV *coro_sv)
1130	CODE:	1472	CODE:
1131	{	1473	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1132	struct coro *coro_src = SvSTATE (src);	1474	OUTPUT:
1133		1475	RETVAL
1134	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1135
1136	++coro_src->refcnt;
1137	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1138	}
1139		1476
1140	void	1477	void
1141	_exit (code)	1478	_exit (code)
1142	int code	1479	int code
1143	PROTOTYPE: $	1480	PROTOTYPE: $
1144	CODE:	1481	CODE:
1145	_exit (code);	1482	_exit (code);
1146		1483
1147	int	1484	int
		1485	cctx_stacksize (int new_stacksize = 0)
		1486	CODE:
		1487	RETVAL = coro_stacksize;
		1488	if (new_stacksize)
		1489	coro_stacksize = new_stacksize;
		1490	OUTPUT:
		1491	RETVAL
		1492
		1493	int
1148	cctx_count ()	1494	cctx_count ()
1149	CODE:	1495	CODE:
1150	RETVAL = cctx_count;	1496	RETVAL = cctx_count;
1151	OUTPUT:	1497	OUTPUT:
1152	RETVAL	1498	RETVAL
…		…
1156	CODE:	1502	CODE:
1157	RETVAL = cctx_idle;	1503	RETVAL = cctx_idle;
1158	OUTPUT:	1504	OUTPUT:
1159	RETVAL	1505	RETVAL
1160		1506
		1507	void
		1508	list ()
		1509	PPCODE:
		1510	{
		1511	struct coro *coro;
		1512	for (coro = coro_first; coro; coro = coro->next)
		1513	if (coro->hv)
		1514	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1515	}
		1516
		1517	void
		1518	call (Coro::State coro, SV *coderef)
		1519	ALIAS:
		1520	eval = 1
		1521	CODE:
		1522	{
		1523	if (coro->mainstack)
		1524	{
		1525	struct coro temp;
		1526	Zero (&temp, 1, struct coro);
		1527	temp.save = CORO_SAVE_ALL;
		1528
		1529	if (!(coro->flags & CF_RUNNING))
		1530	{
		1531	save_perl (aTHX_ &temp);
		1532	load_perl (aTHX_ coro);
		1533	}
		1534
		1535	{
		1536	dSP;
		1537	ENTER;
		1538	SAVETMPS;
		1539	PUSHMARK (SP);
		1540	PUTBACK;
		1541	if (ix)
		1542	eval_sv (coderef, 0);
		1543	else
		1544	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1545	SPAGAIN;
		1546	FREETMPS;
		1547	LEAVE;
		1548	PUTBACK;
		1549	}
		1550
		1551	if (!(coro->flags & CF_RUNNING))
		1552	{
		1553	save_perl (aTHX_ coro);
		1554	load_perl (aTHX_ &temp);
		1555	}
		1556	}
		1557	}
		1558
		1559	SV *
		1560	is_ready (Coro::State coro)
		1561	PROTOTYPE: $
		1562	ALIAS:
		1563	is_ready = CF_READY
		1564	is_running = CF_RUNNING
		1565	is_new = CF_NEW
		1566	is_destroyed = CF_DESTROYED
		1567	CODE:
		1568	RETVAL = boolSV (coro->flags & ix);
		1569	OUTPUT:
		1570	RETVAL
		1571
		1572	void
		1573	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1574	CODE:
		1575	if (flags & CC_TRACE)
		1576	{
		1577	if (!coro->cctx)
		1578	coro->cctx = cctx_new ();
		1579	else if (!(coro->cctx->flags & CC_TRACE))
		1580	croak ("cannot enable tracing on coroutine with custom stack");
		1581
		1582	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1583	}
		1584	else
		1585	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1586	{
		1587	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1588	coro->cctx->flags \|= CC_NOREUSE;
		1589
		1590	if (coro->flags & CF_RUNNING)
		1591	PL_runops = RUNOPS_DEFAULT;
		1592	else
		1593	coro->runops = RUNOPS_DEFAULT;
		1594	}
		1595
		1596	SV *
		1597	has_stack (Coro::State coro)
		1598	PROTOTYPE: $
		1599	CODE:
		1600	RETVAL = boolSV (!!coro->cctx);
		1601	OUTPUT:
		1602	RETVAL
		1603
		1604	int
		1605	is_traced (Coro::State coro)
		1606	PROTOTYPE: $
		1607	CODE:
		1608	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1609	OUTPUT:
		1610	RETVAL
		1611
		1612	IV
		1613	rss (Coro::State coro)
		1614	PROTOTYPE: $
		1615	CODE:
		1616	RETVAL = coro_rss (coro);
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620
1161	MODULE = Coro::State PACKAGE = Coro	1621	MODULE = Coro::State PACKAGE = Coro
1162		1622
1163	BOOT:	1623	BOOT:
1164	{	1624	{
1165	int i;	1625	int i;
		1626
		1627	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1628	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1629	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1630
		1631	coro_current = get_sv ("Coro::current", FALSE);
		1632	SvREADONLY_on (coro_current);
1166		1633
1167	coro_stash = gv_stashpv ("Coro", TRUE);	1634	coro_stash = gv_stashpv ("Coro", TRUE);
1168		1635
1169	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1636	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1170	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1637	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1171	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1638	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1172	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1639	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1173	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1640	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1174	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1641	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1175		1642
1176	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1177	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1178
1179	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1643	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1180	coro_ready[i] = newAV ();	1644	coro_ready[i] = newAV ();
1181		1645
1182	{	1646	{
1183	SV *sv = perl_get_sv("Coro::API", 1);	1647	SV *sv = perl_get_sv("Coro::API", 1);
1184		1648
1185	coroapi.schedule = api_schedule;	1649	coroapi.schedule = api_schedule;
		1650	coroapi.save = api_save;
1186	coroapi.cede = api_cede;	1651	coroapi.cede = api_cede;
		1652	coroapi.cede_notself = api_cede_notself;
1187	coroapi.ready = api_ready;	1653	coroapi.ready = api_ready;
1188	coroapi.is_ready = api_is_ready;	1654	coroapi.is_ready = api_is_ready;
1189	coroapi.nready = &coro_nready;	1655	coroapi.nready = &coro_nready;
1190	coroapi.current = coro_current;	1656	coroapi.current = coro_current;
1191		1657
1192	GCoroAPI = &coroapi;	1658	GCoroAPI = &coroapi;
1193	sv_setiv (sv, (IV)&coroapi);	1659	sv_setiv (sv, (IV)&coroapi);
1194	SvREADONLY_on (sv);	1660	SvREADONLY_on (sv);
1195	}	1661	}
1196	}	1662	}
		1663
		1664	void
		1665	_set_current (SV *current)
		1666	PROTOTYPE: $
		1667	CODE:
		1668	SvREFCNT_dec (SvRV (coro_current));
		1669	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1197		1670
1198	int	1671	int
1199	prio (Coro::State coro, int newprio = 0)	1672	prio (Coro::State coro, int newprio = 0)
1200	ALIAS:	1673	ALIAS:
1201	nice = 1	1674	nice = 1
…		…
1204	RETVAL = coro->prio;	1677	RETVAL = coro->prio;
1205		1678
1206	if (items > 1)	1679	if (items > 1)
1207	{	1680	{
1208	if (ix)	1681	if (ix)
1209	newprio += coro->prio;	1682	newprio = coro->prio - newprio;
1210		1683
1211	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1684	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1212	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1685	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1213		1686
1214	coro->prio = newprio;	1687	coro->prio = newprio;
1215	}	1688	}
1216	}	1689	}
		1690	OUTPUT:
		1691	RETVAL
1217		1692
1218	SV *	1693	SV *
1219	ready (SV *self)	1694	ready (SV *self)
1220	PROTOTYPE: $	1695	PROTOTYPE: $
1221	CODE:	1696	CODE:
1222	RETVAL = boolSV (api_ready (self));	1697	RETVAL = boolSV (api_ready (self));
1223	OUTPUT:	1698	OUTPUT:
1224	RETVAL	1699	RETVAL
1225		1700
1226	SV *
1227	is_ready (SV *self)
1228	PROTOTYPE: $
1229	CODE:
1230	RETVAL = boolSV (api_is_ready (self));
1231	OUTPUT:
1232	RETVAL
1233
1234	int	1701	int
1235	nready (...)	1702	nready (...)
1236	PROTOTYPE:	1703	PROTOTYPE:
1237	CODE:	1704	CODE:
1238	RETVAL = coro_nready;	1705	RETVAL = coro_nready;
1239	OUTPUT:	1706	OUTPUT:
1240	RETVAL	1707	RETVAL
1241		1708
		1709	# for async_pool speedup
		1710	void
		1711	_pool_1 (SV *cb)
		1712	CODE:
		1713	{
		1714	int i, len;
		1715	HV hv = (HV )SvRV (coro_current);
		1716	AV *defav = GvAV (PL_defgv);
		1717	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1718	AV *invoke_av;
		1719
		1720	if (!invoke)
		1721	croak ("\3terminate\2\n");
		1722
		1723	hv_store (hv, "desc", sizeof ("desc") - 1,
		1724	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1725
		1726	invoke_av = (AV *)SvRV (invoke);
		1727	len = av_len (invoke_av);
		1728
		1729	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1730
		1731	if (len > 0)
		1732	{
		1733	av_fill (defav, len - 1);
		1734	for (i = 0; i < len; ++i)
		1735	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1736	}
		1737
		1738	SvREFCNT_dec (invoke);
		1739	}
		1740
		1741	void
		1742	_pool_2 (SV *cb)
		1743	CODE:
		1744	{
		1745	struct coro *coro = SvSTATE (coro_current);
		1746
		1747	sv_setsv (cb, &PL_sv_undef);
		1748
		1749	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1750	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1751	croak ("\3terminate\2\n");
		1752
		1753	av_clear (GvAV (PL_defgv));
		1754	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1755	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1756	coro->save = CORO_SAVE_DEF;
		1757	coro->prio = 0;
		1758	av_push (av_async_pool, newSVsv (coro_current));
		1759	}
		1760
		1761
1242	MODULE = Coro::State PACKAGE = Coro::AIO	1762	MODULE = Coro::State PACKAGE = Coro::AIO
1243		1763
1244	SV *	1764	SV *
1245	_get_state ()	1765	_get_state ()
1246	CODE:	1766	CODE:
1247	{	1767	{
1248	struct {	1768	struct io_state *data;
1249	int errorno;
1250	int laststype;
1251	int laststatval;
1252	Stat_t statcache;
1253	} data;
1254		1769
		1770	RETVAL = newSV (sizeof (struct io_state));
		1771	data = (struct io_state *)SvPVX (RETVAL);
		1772	SvCUR_set (RETVAL, sizeof (struct io_state));
		1773	SvPOK_only (RETVAL);
		1774
1255	data.errorno = errno;	1775	data->errorno = errno;
1256	data.laststype = PL_laststype;	1776	data->laststype = PL_laststype;
1257	data.laststatval = PL_laststatval;	1777	data->laststatval = PL_laststatval;
1258	data.statcache = PL_statcache;	1778	data->statcache = PL_statcache;
1259
1260	RETVAL = newSVpvn ((char *)&data, sizeof data);
1261	}	1779	}
1262	OUTPUT:	1780	OUTPUT:
1263	RETVAL	1781	RETVAL
1264		1782
1265	void	1783	void
1266	_set_state (char *data_)	1784	_set_state (char *data_)
1267	PROTOTYPE: $	1785	PROTOTYPE: $
1268	CODE:	1786	CODE:
1269	{	1787	{
1270	struct {	1788	struct io_state data = (void )data_;
1271	int errorno;
1272	int laststype;
1273	int laststatval;
1274	Stat_t statcache;
1275	} data = (void )data_;
1276		1789
1277	errno = data->errorno;	1790	errno = data->errorno;
1278	PL_laststype = data->laststype;	1791	PL_laststype = data->laststype;
1279	PL_laststatval = data->laststatval;	1792	PL_laststatval = data->laststatval;
1280	PL_statcache = data->statcache;	1793	PL_statcache = data->statcache;
1281	}	1794	}
		1795

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Comparing Coro/Coro/State.xs (file contents): Revision 1.115 by root, Fri Dec 1 13:36:08 2006 UTC vs. Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.115 by root, Fri Dec 1 13:36:08 2006 UTC vs.
Revision 1.170 by root, Thu Sep 27 20:14:49 2007 UTC