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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC vs.
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45		13	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		14
54	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
55	# include <unistd.h>	16	# include <unistd.h>
56	# include <sys/mman.h>	17	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
72	#else	33	#else
73	# define PAGESIZE 0	34	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
75	#endif	36	#endif
76		37
77	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
79	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
80	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
82		97
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		99
85	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	103	#else
88	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
89	#endif	106	#endif
90		107
91	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
92		109
93	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
99	#else	116	#else
100	# define LOCK (void)0	117	# define LOCK (void)0
101	# define UNLOCK (void)0	118	# define UNLOCK (void)0
102	#endif	119	#endif
103		120
		121	/* helper storage struct for Coro::AIO */
104	struct io_state	122	struct io_state
105	{	123	{
106	int errorno;	124	int errorno;
107	I32 laststype;	125	I32 laststype;
108	int laststatval;	126	int laststatval;
109	Stat_t statcache;	127	Stat_t statcache;
110	};	128	};
111		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
112	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
113	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
114	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
115	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
116		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
117	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
118	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		152	};
119		153
120	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
121	typedef struct coro_cctx {	155	typedef struct coro_cctx {
122	struct coro_cctx *next;	156	struct coro_cctx *next;
123		157
124	/* the stack */	158	/* the stack */
125	void *sptr;	159	void *sptr;
126	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
127		161
128	/* cpu state */	162	/* cpu state */
129	void idle_sp; / sp of top-level transfer/schedule/cede call */	163	void idle_sp; / sp of top-level transfer/schedule/cede call */
		164	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
130	JMPENV *top_env;	165	JMPENV *top_env;
131	coro_context cctx;	166	coro_context cctx;
132		167
133	int inuse;
134
135	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
136	int valgrind_id;	169	int valgrind_id;
137	#endif	170	#endif
		171	unsigned char flags;
138	} coro_cctx;	172	} coro_cctx;
139		173
140	enum {	174	enum {
141	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
142	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
143	CF_NEW = 0x0004, /* ahs never been switched to */	177	CF_NEW = 0x0004, /* has never been switched to */
		178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
144	};	179	};
145		180
146	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
147	struct coro {	182	struct coro {
148	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
…		…
156		191
157	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
158	AV defav; / @_ */	193	AV defav; / @_ */
159	SV defsv; / $_ */	194	SV defsv; / $_ */
160	SV errsv; / $@ */	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
161	SV irssv; / $/ */	197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
162		199
163	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
164	# include "state.h"	201	# include "state.h"
165	#undef VAR	202	#undef VAR
166		203
		204	/* statistics */
		205	int usecount; /* number of switches to this coro */
		206
167	/* coro process data */	207	/* coro process data */
168	int prio;	208	int prio;
		209
		210	/* linked list */
		211	struct coro next, prev;
		212	HV hv; / the perl hash associated with this coro, if any */
169	};	213	};
170		214
171	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
172	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
173		217
		218	/ Coro ******************************************************************/
		219
		220	#define PRIO_MAX 3
		221	#define PRIO_HIGH 1
		222	#define PRIO_NORMAL 0
		223	#define PRIO_LOW -1
		224	#define PRIO_IDLE -3
		225	#define PRIO_MIN -4
		226
		227	/* for Coro.pm */
		228	static SV *coro_current;
		229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		230	static int coro_nready;
		231	static struct coro *coro_first;
		232
		233	/ lowlevel stuff ********************************************************/
		234
174	static AV *	235	static AV *
175	coro_clone_padlist (CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
176	{	237	{
177	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
178	AV newpadlist, newpad;	239	AV newpadlist, newpad;
179		240
180	newpadlist = newAV ();	241	newpadlist = newAV ();
…		…
192		253
193	return newpadlist;	254	return newpadlist;
194	}	255	}
195		256
196	static void	257	static void
197	free_padlist (AV *padlist)	258	free_padlist (pTHX_ AV *padlist)
198	{	259	{
199	/* may be during global destruction */	260	/* may be during global destruction */
200	if (SvREFCNT (padlist))	261	if (SvREFCNT (padlist))
201	{	262	{
202	I32 i = AvFILLp (padlist);	263	I32 i = AvFILLp (padlist);
…		…
223	AV *padlist;	284	AV *padlist;
224	AV av = (AV )mg->mg_obj;	285	AV av = (AV )mg->mg_obj;
225		286
226	/* casting is fun. */	287	/* casting is fun. */
227	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	288	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
228	free_padlist (padlist);	289	free_padlist (aTHX_ padlist);
229		290
230	SvREFCNT_dec (av);	291	SvREFCNT_dec (av);
231		292
232	return 0;	293	return 0;
233	}	294	}
…		…
241	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
242	? SvMAGIC (cv) \	303	? SvMAGIC (cv) \
243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
244	: 0	305	: 0
245		306
		307	static struct coro *
		308	SvSTATE_ (pTHX_ SV *coro)
		309	{
		310	HV *stash;
		311	MAGIC *mg;
		312
		313	if (SvROK (coro))
		314	coro = SvRV (coro);
		315
		316	if (SvTYPE (coro) != SVt_PVHV)
		317	croak ("Coro::State object required");
		318
		319	stash = SvSTASH (coro);
		320	if (stash != coro_stash && stash != coro_state_stash)
		321	{
		322	/* very slow, but rare, check */
		323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		324	croak ("Coro::State object required");
		325	}
		326
		327	mg = CORO_MAGIC (coro);
		328	return (struct coro *)mg->mg_ptr;
		329	}
		330
		331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		332
246	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
247	static void	334	static void
248	get_padlist (CV *cv)	335	get_padlist (pTHX_ CV *cv)
249	{	336	{
250	MAGIC *mg = CORO_MAGIC (cv);	337	MAGIC *mg = CORO_MAGIC (cv);
251	AV *av;	338	AV *av;
252		339
253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255	else	342	else
256	{	343	{
257	#if 0	344	#if CORO_PREFER_PERL_FUNCTIONS
258	/* this is probably cleaner, but also slower? */	345	/* this is probably cleaner, but also slower? */
259	CV *cp = Perl_cv_clone (cv);	346	CV *cp = Perl_cv_clone (cv);
260	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
261	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
262	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
263	#else	350	#else
264	CvPADLIST (cv) = coro_clone_padlist (cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
265	#endif	352	#endif
266	}	353	}
267	}	354	}
268		355
269	static void	356	static void
270	put_padlist (CV *cv)	357	put_padlist (pTHX_ CV *cv)
271	{	358	{
272	MAGIC *mg = CORO_MAGIC (cv);	359	MAGIC *mg = CORO_MAGIC (cv);
273	AV *av;	360	AV *av;
274		361
275	if (!mg)	362	if (!mg)
…		…
286	av_extend (av, AvMAX (av) + 1);	373	av_extend (av, AvMAX (av) + 1);
287		374
288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
289	}	376	}
290		377
		378	/ load & save, init *****************************************************/
		379
291	#define SB do {	380	#define SB do {
292	#define SE } while (0)	381	#define SE } while (0)
293		382
294	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
295		384
296	static void	385	static void
297	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
298	{	387	{
299	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
300	# include "state.h"	389	# include "state.h"
301	#undef VAR	390	#undef VAR
302		391
303	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
304	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
305	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
306	if (c->irssv) REPLACE_SV (PL_rs , c->irssv);	395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		396
		397	if (c->irssv)
		398	{
		399	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		400	{
		401	SvREFCNT_dec (c->irssv);
		402	c->irssv = 0;
		403	}
		404	else
		405	{
		406	REPLACE_SV (PL_rs, c->irssv);
		407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		408	sv_setsv (c->irssv_sv, PL_rs);
		409	}
		410	}
307		411
308	{	412	{
309	dSP;	413	dSP;
310	CV *cv;	414	CV *cv;
311		415
312	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
314	{	418	{
315	put_padlist (cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
316	CvDEPTH (cv) = PTR2IV (POPs);	420	CvDEPTH (cv) = PTR2IV (POPs);
317	CvPADLIST (cv) = (AV *)POPs;	421	CvPADLIST (cv) = (AV *)POPs;
318	}	422	}
319		423
320	PUTBACK;	424	PUTBACK;
321	}	425	}
322	}	426	}
323		427
324	static void	428	static void
325	save_perl (Coro__State c)	429	save_perl (pTHX_ Coro__State c)
326	{	430	{
327	{	431	{
328	dSP;	432	dSP;
329	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
330	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
333	/*	437	/*
334	* the worst thing you can imagine happens first - we have to save	438	* the worst thing you can imagine happens first - we have to save
335	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
336	*/	440	*/
337		441
338	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
339	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
340	for (;;)	444	for (;;)
341	{	445	{
342	while (cxix >= 0)	446	while (cxix >= 0)
343	{	447	{
344	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
345		449
346	if (CxTYPE (cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
347	{	451	{
348	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
349		453
350	if (CvDEPTH (cv))	454	if (CvDEPTH (cv))
351	{	455	{
352	EXTEND (SP, 3);	456	EXTEND (SP, 3);
353
354	PUSHs ((SV *)CvPADLIST (cv));	457	PUSHs ((SV *)CvPADLIST (cv));
355	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
356	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
357		460
358	CvDEPTH (cv) = 0;	461	CvDEPTH (cv) = 0;
359	get_padlist (cv);	462	get_padlist (aTHX_ cv);
360	}	463	}
361	}	464	}
362	#ifdef CXt_FORMAT
363	else if (CxTYPE (cx) == CXt_FORMAT)
364	{
365	/* I never used formats, so how should I know how these are implemented? */
366	/* my bold guess is as a simple, plain sub... */
367	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
368	}
369	#endif
370	}	465	}
371		466
372	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
373	break;	468	break;
374		469
375	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
376	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
377	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
378	}	473	}
379		474
380	PUTBACK;	475	PUTBACK;
381	}	476	}
382		477
383	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
384	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
385	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
386	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
387		483
388	#define VAR(name,type)c->name = PL_ ## name;	484	#define VAR(name,type)c->name = PL_ ## name;
389	# include "state.h"	485	# include "state.h"
390	#undef VAR	486	#undef VAR
…		…
394	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
395	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
396	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
397	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
398	*/	494	*/
		495	#if CORO_PREFER_PERL_FUNCTIONS
		496	# define coro_init_stacks init_stacks
		497	#else
399	static void	498	static void
400	coro_init_stacks ()	499	coro_init_stacks (pTHX)
401	{	500	{
402	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	501	PL_curstackinfo = new_stackinfo(64, 6);
403	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
404	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
405	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
406		505
407	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
408	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
409	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
410		509
411	New(50,PL_tmps_stack,128,SV*);	510	New(50,PL_tmps_stack,64,SV*);
412	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
413	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
414	PL_tmps_max = 128;	513	PL_tmps_max = 64;
415		514
416	New(54,PL_markstack,32,I32);	515	New(54,PL_markstack,16,I32);
417	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
418	PL_markstack_max = PL_markstack + 32;	517	PL_markstack_max = PL_markstack + 16;
419		518
420	#ifdef SET_MARK_OFFSET	519	#ifdef SET_MARK_OFFSET
421	SET_MARK_OFFSET;	520	SET_MARK_OFFSET;
422	#endif	521	#endif
423		522
424	New(54,PL_scopestack,32,I32);	523	New(54,PL_scopestack,16,I32);
425	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
426	PL_scopestack_max = 32;	525	PL_scopestack_max = 16;
427		526
428	New(54,PL_savestack,64,ANY);	527	New(54,PL_savestack,64,ANY);
429	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
430	PL_savestack_max = 64;	529	PL_savestack_max = 64;
431		530
432	#if !PERL_VERSION_ATLEAST (5,9,0)	531	#if !PERL_VERSION_ATLEAST (5,9,0)
433	New(54,PL_retstack,16,OP*);	532	New(54,PL_retstack,4,OP*);
434	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
435	PL_retstack_max = 16;	534	PL_retstack_max = 4;
436	#endif	535	#endif
437	}	536	}
		537	#endif
438		538
439	/*	539	/*
440	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
441	*/	541	*/
442	static void	542	static void
443	coro_destroy_stacks ()	543	coro_destroy_stacks (pTHX)
444	{	544	{
445	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
446	{	546	{
447	/* is this ugly, I ask? */	547	/* restore all saved variables and stuff */
448	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
		549	assert (PL_tmps_floor == -1);
449		550
450	/* sure it is, but more important: is it correct?? :/ */	551	/* free all temporaries */
451	FREETMPS;	552	FREETMPS;
		553	assert (PL_tmps_ix == -1);
452		554
		555	/* unwind all extra stacks */
453	/POPSTACK_TO (PL_mainstack);//D//use/	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
454	}	560	}
455		561
456	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
457	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
458		564
459	while (PL_curstackinfo)	565	while (PL_curstackinfo)
460	{	566	{
461	PERL_SI *p = PL_curstackinfo->si_prev;	567	PERL_SI *p = PL_curstackinfo->si_prev;
462		568
463	{ /D//remove/
464	dSP;
465	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
466	PUTBACK; /* possibly superfluous */
467	}
468
469	if (!IN_DESTRUCT)	569	if (!IN_DESTRUCT)
470	{
471	dounwind (-1);/D//remove/
472	SvREFCNT_dec (PL_curstackinfo->si_stack);	570	SvREFCNT_dec (PL_curstackinfo->si_stack);
473	}
474		571
475	Safefree (PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
476	Safefree (PL_curstackinfo);	573	Safefree (PL_curstackinfo);
477	PL_curstackinfo = p;	574	PL_curstackinfo = p;
478	}	575	}
…		…
484	#if !PERL_VERSION_ATLEAST (5,9,0)	581	#if !PERL_VERSION_ATLEAST (5,9,0)
485	Safefree (PL_retstack);	582	Safefree (PL_retstack);
486	#endif	583	#endif
487	}	584	}
488		585
		586	static size_t
		587	coro_rss (pTHX_ struct coro *coro)
		588	{
		589	size_t rss = sizeof (coro);
		590
		591	if (coro->mainstack)
		592	{
		593	if (coro->flags & CF_RUNNING)
		594	{
		595	#define VAR(name,type)coro->name = PL_ ## name;
		596	# include "state.h"
		597	#undef VAR
		598	}
		599
		600	rss += sizeof (coro->curstackinfo);
		601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		604	rss += coro->tmps_max * sizeof (SV *);
		605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		606	rss += coro->scopestack_max * sizeof (I32);
		607	rss += coro->savestack_max * sizeof (ANY);
		608
		609	#if !PERL_VERSION_ATLEAST (5,9,0)
		610	rss += coro->retstack_max * sizeof (OP *);
		611	#endif
		612	}
		613
		614	return rss;
		615	}
		616
		617	/ coroutine stack handling **********************************************/
		618
489	static void	619	static void
490	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
491	{	621	{
492	/*	622	/*
493	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
494	*/	624	*/
495
496	coro_init_stacks ();	625	coro_init_stacks (aTHX);
497		626
		627	PL_runops = RUNOPS_DEFAULT;
498	PL_curcop = &PL_compiling;	628	PL_curcop = &PL_compiling;
499	PL_in_eval = EVAL_NULL;	629	PL_in_eval = EVAL_NULL;
		630	PL_comppad = 0;
500	PL_curpm = 0;	631	PL_curpm = 0;
501	PL_localizing = 0;	632	PL_localizing = 0;
502	PL_dirty = 0;	633	PL_dirty = 0;
503	PL_restartop = 0;	634	PL_restartop = 0;
504		635
…		…
512	Zero (&myop, 1, LOGOP);	643	Zero (&myop, 1, LOGOP);
513	myop.op_next = Nullop;	644	myop.op_next = Nullop;
514	myop.op_flags = OPf_WANT_VOID;	645	myop.op_flags = OPf_WANT_VOID;
515		646
516	PUSHMARK (SP);	647	PUSHMARK (SP);
517	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	648	XPUSHs (av_shift (GvAV (PL_defgv)));
518	PUTBACK;	649	PUTBACK;
519	PL_op = (OP *)&myop;	650	PL_op = (OP *)&myop;
520	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
521	SPAGAIN;	652	SPAGAIN;
522	}	653	}
523		654
524	ENTER; /* necessary e.g. for dounwind */	655	ENTER; /* necessary e.g. for dounwind */
525	}	656	}
526		657
527	static void	658	static void
528	free_coro_mortal ()	659	free_coro_mortal (pTHX)
529	{	660	{
530	if (coro_mortal)	661	if (coro_mortal)
531	{	662	{
532	SvREFCNT_dec (coro_mortal);	663	SvREFCNT_dec (coro_mortal);
533	coro_mortal = 0;	664	coro_mortal = 0;
534	}	665	}
535	}	666	}
536		667
		668	static int
		669	runops_trace (pTHX)
		670	{
		671	COP *oldcop = 0;
		672	int oldcxix = -2;
		673	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		674	coro_cctx *cctx = coro->cctx;
		675
		676	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		677	{
		678	PERL_ASYNC_CHECK ();
		679
		680	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		681	{
		682	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		683	SV bot, top;
		684	AV av = newAV (); / return values */
		685	SV **cb;
		686	runops_proc_t old_runops = PL_runops;
		687	dSP;
		688	ENTER;
		689	SAVETMPS;
		690	EXTEND (SP, 3);
		691	PL_runops = RUNOPS_DEFAULT;
		692
		693	GV *gv = CvGV (cx->blk_sub.cv);
		694	SV *fullname = sv_2mortal (newSV (0));
		695	if (isGV (gv))
		696	gv_efullname3 (fullname, gv, 0);
		697
		698	bot = PL_stack_base + cx->blk_oldsp + 1;
		699	top = cx->blk_gimme == G_ARRAY ? SP + 1
		700	: cx->blk_gimme == G_SCALAR ? bot + 1
		701	: bot;
		702
		703	while (bot < top)
		704	av_push (av, SvREFCNT_inc (*bot++));
		705
		706	PUSHMARK (SP);
		707	PUSHs (&PL_sv_no);
		708	PUSHs (fullname);
		709	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		710	PUTBACK;
		711	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		712	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		713	SPAGAIN;
		714
		715	FREETMPS;
		716	LEAVE;
		717	PL_runops = old_runops;
		718	}
		719
		720	if (oldcop != PL_curcop)
		721	{
		722	oldcop = PL_curcop;
		723
		724	if (PL_curcop != &PL_compiling)
		725	{
		726	SV **cb;
		727	runops_proc_t old_runops = PL_runops;
		728	dSP;
		729	ENTER;
		730	SAVETMPS;
		731	EXTEND (SP, 3);
		732	PL_runops = RUNOPS_DEFAULT;
		733
		734	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		735	{
		736	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		737
		738	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		739	{
		740	GV *gv = CvGV (cx->blk_sub.cv);
		741	SV *fullname = sv_2mortal (newSV (0));
		742	if (isGV (gv))
		743	gv_efullname3 (fullname, gv, 0);
		744
		745	PUSHMARK (SP);
		746	PUSHs (&PL_sv_yes);
		747	PUSHs (fullname);
		748	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		749	PUTBACK;
		750	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		751	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		752	SPAGAIN;
		753	}
		754
		755	oldcxix = cxstack_ix;
		756	}
		757
		758	if (cctx->flags & CC_TRACE_LINE)
		759	{
		760	PUSHMARK (SP);
		761	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		762	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		766	SPAGAIN;
		767	}
		768
		769	FREETMPS;
		770	LEAVE;
		771	PL_runops = old_runops;
		772	}
		773	}
		774	}
		775
		776	TAINT_NOT;
		777	return 0;
		778	}
		779
537	/* inject a fake call to Coro::State::_cctx_init into the execution */	780	/* inject a fake call to Coro::State::_cctx_init into the execution */
		781	/* _cctx_init should be careful, as it could be called at almost any time */
		782	/* during execution of a perl program */
538	static void NOINLINE	783	static void NOINLINE
539	prepare_cctx (coro_cctx *cctx)	784	prepare_cctx (pTHX_ coro_cctx *cctx)
540	{	785	{
541	dSP;	786	dSP;
542	LOGOP myop;	787	LOGOP myop;
		788
		789	PL_top_env = &PL_start_env;
		790
		791	if (cctx->flags & CC_TRACE)
		792	PL_runops = runops_trace;
543		793
544	Zero (&myop, 1, LOGOP);	794	Zero (&myop, 1, LOGOP);
545	myop.op_next = PL_op;	795	myop.op_next = PL_op;
546	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	796	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
547		797
…		…
553	PL_op = (OP *)&myop;	803	PL_op = (OP *)&myop;
554	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	804	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
555	SPAGAIN;	805	SPAGAIN;
556	}	806	}
557		807
		808	/*
		809	* this is a _very_ stripped down perl interpreter ;)
		810	*/
558	static void	811	static void
559	coro_run (void *arg)	812	coro_run (void *arg)
560	{	813	{
		814	dTHX;
		815
561	/* coro_run is the alternative tail of transfer(), so unlock here. */	816	/* coro_run is the alternative tail of transfer(), so unlock here. */
562	UNLOCK;	817	UNLOCK;
563		818
564	/*	819	/* we now skip the entersub that lead to transfer() */
565	* this is a _very_ stripped down perl interpreter ;)	820	PL_op = PL_op->op_next;
566	*/
567	PL_top_env = &PL_start_env;
568		821
569	/* inject call to cctx_init */	822	/* inject a fake subroutine call to cctx_init */
570	prepare_cctx ((coro_cctx *)arg);	823	prepare_cctx (aTHX_ (coro_cctx *)arg);
571		824
572	/* somebody will hit me for both perl_run and PL_restartop */	825	/* somebody or something will hit me for both perl_run and PL_restartop */
573	PL_restartop = PL_op;	826	PL_restartop = PL_op;
574	perl_run (PL_curinterp);	827	perl_run (PL_curinterp);
575		828
576	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	829	/*
577	abort ();	830	* If perl-run returns we assume exit() was being called or the coro
		831	* fell off the end, which seems to be the only valid (non-bug)
		832	* reason for perl_run to return. We try to exit by jumping to the
		833	* bootstrap-time "top" top_env, as we cannot restore the "main"
		834	* coroutine as Coro has no such concept
		835	*/
		836	PL_top_env = main_top_env;
		837	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
578	}	838	}
579		839
580	static coro_cctx *	840	static coro_cctx *
581	cctx_new ()	841	cctx_new ()
582	{	842	{
583	coro_cctx *cctx;	843	coro_cctx *cctx;
		844	void *stack_start;
		845	size_t stack_size;
584		846
585	++cctx_count;	847	++cctx_count;
586		848
587	New (0, cctx, 1, coro_cctx);	849	Newz (0, cctx, 1, coro_cctx);
588		850
589	#if HAVE_MMAP	851	#if HAVE_MMAP
590		852
591	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	853	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
592	/* mmap supposedly does allocate-on-write for us */	854	/* mmap supposedly does allocate-on-write for us */
593	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	855	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
594		856
595	if (cctx->sptr == (void *)-1)	857	if (cctx->sptr != (void *)-1)
596	{
597	perror ("FATAL: unable to mmap stack for coroutine");
598	_exit (EXIT_FAILURE);
599	}	858	{
600
601	# if STACKGUARD	859	# if CORO_STACKGUARD
602	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	860	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
603	# endif	861	# endif
		862	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		863	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		864	cctx->flags \|= CC_MAPPED;
		865	}
		866	else
		867	#endif
		868	{
		869	cctx->ssize = coro_stacksize * (long)sizeof (long);
		870	New (0, cctx->sptr, coro_stacksize, long);
604		871
605	#else
606
607	cctx->ssize = STACKSIZE * (long)sizeof (long);
608	New (0, cctx->sptr, STACKSIZE, long);
609
610	if (!cctx->sptr)	872	if (!cctx->sptr)
611	{	873	{
612	perror ("FATAL: unable to malloc stack for coroutine");	874	perror ("FATAL: unable to allocate stack for coroutine");
613	_exit (EXIT_FAILURE);	875	_exit (EXIT_FAILURE);
614	}	876	}
615		877
616	#endif	878	stack_start = cctx->sptr;
		879	stack_size = cctx->ssize;
		880	}
617		881
618	#if USE_VALGRIND	882	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
619	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
620	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
621	cctx->ssize + (char *)cctx->sptr
622	);
623	#endif
624
625	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	883	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
626		884
627	return cctx;	885	return cctx;
628	}	886	}
629		887
630	static void	888	static void
…		…
633	if (!cctx)	891	if (!cctx)
634	return;	892	return;
635		893
636	--cctx_count;	894	--cctx_count;
637		895
638	#if USE_VALGRIND	896	#if CORO_USE_VALGRIND
639	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	897	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
640	#endif	898	#endif
641		899
642	#if HAVE_MMAP	900	#if HAVE_MMAP
		901	if (cctx->flags & CC_MAPPED)
643	munmap (cctx->sptr, cctx->ssize);	902	munmap (cctx->sptr, cctx->ssize);
644	#else	903	else
		904	#endif
645	Safefree (cctx->sptr);	905	Safefree (cctx->sptr);
646	#endif
647		906
648	Safefree (cctx);	907	Safefree (cctx);
649	}	908	}
650		909
651	static coro_cctx *	910	static coro_cctx *
652	cctx_get ()	911	cctx_get (pTHX)
653	{	912	{
654	coro_cctx *cctx;
655
656	if (cctx_first)	913	while (cctx_first)
657	{	914	{
658	cctx = cctx_first;	915	coro_cctx *cctx = cctx_first;
659	cctx_first = cctx->next;	916	cctx_first = cctx->next;
660	--cctx_idle;	917	--cctx_idle;
661	}	918
662	else	919	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
663	{	920	return cctx;
664	cctx = cctx_new ();	921
665	PL_op = PL_op->op_next;	922	cctx_destroy (cctx);
666	}	923	}
667		924
668	return cctx;	925	return cctx_new ();
669	}	926	}
670		927
671	static void	928	static void
672	cctx_put (coro_cctx *cctx)	929	cctx_put (coro_cctx *cctx)
673	{	930	{
…		…
676	{	933	{
677	coro_cctx *first = cctx_first;	934	coro_cctx *first = cctx_first;
678	cctx_first = first->next;	935	cctx_first = first->next;
679	--cctx_idle;	936	--cctx_idle;
680		937
681	assert (!first->inuse);
682	cctx_destroy (first);	938	cctx_destroy (first);
683	}	939	}
684		940
685	++cctx_idle;	941	++cctx_idle;
686	cctx->next = cctx_first;	942	cctx->next = cctx_first;
687	cctx_first = cctx;	943	cctx_first = cctx;
688	}	944	}
689		945
690	/* never call directly, always through the coro_state_transfer global variable */	946	/ coroutine switching ***************************************************/
		947
691	static void NOINLINE	948	static void NOINLINE
		949	transfer_check (pTHX_ struct coro prev, struct coro next)
		950	{
		951	if (prev != next)
		952	{
		953	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		954	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		955
		956	if (next->flags & CF_RUNNING)
		957	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		958
		959	if (next->flags & CF_DESTROYED)
		960	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		961
		962	if (PL_lex_state != LEX_NOTPARSING)
		963	croak ("Coro::State::transfer called while parsing, but this is not supported");
		964	}
		965	}
		966
		967	/* always use the TRANSFER macro */
		968	static void NOINLINE
692	transfer (struct coro prev, struct coro next)	969	transfer (pTHX_ struct coro prev, struct coro next)
693	{	970	{
694	dSTACKLEVEL;	971	dSTACKLEVEL;
695		972
696	/* sometimes transfer is only called to set idle_sp */	973	/* sometimes transfer is only called to set idle_sp */
697	if (!next)	974	if (!next)
		975	{
698	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	976	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		977	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		978	}
699	else if (prev != next)	979	else if (prev != next)
700	{	980	{
701	coro_cctx *prev__cctx;	981	coro_cctx *prev__cctx;
702		982
703	if (prev->flags & CF_NEW)	983	if (prev->flags & CF_NEW)
704	{	984	{
705	/* create a new empty context */	985	/* create a new empty context */
706	Newz (0, prev->cctx, 1, coro_cctx);	986	Newz (0, prev->cctx, 1, coro_cctx);
707	prev->cctx->inuse = 1;
708	prev->flags &= ~CF_NEW;	987	prev->flags &= ~CF_NEW;
709	prev->flags \|= CF_RUNNING;	988	prev->flags \|= CF_RUNNING;
710	}	989	}
711
712	/TODO: must not croak here /
713	if (!prev->flags & CF_RUNNING)
714	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
715
716	if (next->flags & CF_RUNNING)
717	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
718		990
719	prev->flags &= ~CF_RUNNING;	991	prev->flags &= ~CF_RUNNING;
720	next->flags \|= CF_RUNNING;	992	next->flags \|= CF_RUNNING;
721		993
722	LOCK;	994	LOCK;
…		…
724	if (next->flags & CF_NEW)	996	if (next->flags & CF_NEW)
725	{	997	{
726	/* need to start coroutine */	998	/* need to start coroutine */
727	next->flags &= ~CF_NEW;	999	next->flags &= ~CF_NEW;
728	/* first get rid of the old state */	1000	/* first get rid of the old state */
729	save_perl (prev);	1001	save_perl (aTHX_ prev);
730	/* setup coroutine call */	1002	/* setup coroutine call */
731	setup_coro (next);	1003	setup_coro (aTHX_ next);
732	/* need a new stack */
733	assert (!next->stack);
734	}	1004	}
735	else	1005	else
736	{	1006	{
737	/* coroutine already started */	1007	/* coroutine already started */
738	save_perl (prev);	1008	save_perl (aTHX_ prev);
739	load_perl (next);	1009	load_perl (aTHX_ next);
740	}	1010	}
741		1011
742	prev__cctx = prev->cctx;	1012	prev__cctx = prev->cctx;
743		1013
744	/* possibly "free" the cctx */	1014	/* possibly "free" the cctx */
745	if (prev__cctx->idle_sp == STACKLEVEL)	1015	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
746	{	1016	{
747	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1017	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
748	assert (PL_top_env == prev__cctx->top_env);	1018	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
749		1019
750	prev->cctx = 0;	1020	prev->cctx = 0;
751		1021
752	cctx_put (prev__cctx);	1022	cctx_put (prev__cctx);
753	prev__cctx->inuse = 0;
754	}	1023	}
755		1024
		1025	++next->usecount;
		1026
756	if (!next->cctx)	1027	if (!next->cctx)
757	{
758	next->cctx = cctx_get ();	1028	next->cctx = cctx_get (aTHX);
759	assert (!next->cctx->inuse);
760	next->cctx->inuse = 1;
761	}
762		1029
763	if (prev__cctx != next->cctx)	1030	if (prev__cctx != next->cctx)
764	{	1031	{
765	prev__cctx->top_env = PL_top_env;	1032	prev__cctx->top_env = PL_top_env;
766	PL_top_env = next->cctx->top_env;	1033	PL_top_env = next->cctx->top_env;
767	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1034	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
768	}	1035	}
769		1036
770	free_coro_mortal ();	1037	free_coro_mortal (aTHX);
771
772	UNLOCK;	1038	UNLOCK;
773	}	1039	}
774	}	1040	}
775		1041
776	struct transfer_args	1042	struct transfer_args
777	{	1043	{
778	struct coro prev, next;	1044	struct coro prev, next;
779	};	1045	};
780		1046
781	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1047	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1048	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
782		1049
		1050	/ high level stuff ******************************************************/
		1051
783	static void	1052	static int
784	coro_state_destroy (struct coro *coro)	1053	coro_state_destroy (pTHX_ struct coro *coro)
785	{	1054	{
786	if (coro->refcnt--)	1055	if (coro->flags & CF_DESTROYED)
787	return;	1056	return 0;
		1057
		1058	coro->flags \|= CF_DESTROYED;
		1059
		1060	if (coro->flags & CF_READY)
		1061	{
		1062	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1063	/* alternative: look through all ready queues and remove the coro */
		1064	LOCK;
		1065	--coro_nready;
		1066	UNLOCK;
		1067	}
		1068	else
		1069	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
788		1070
789	if (coro->mainstack && coro->mainstack != main_mainstack)	1071	if (coro->mainstack && coro->mainstack != main_mainstack)
790	{	1072	{
791	struct coro temp;	1073	struct coro temp;
		1074
		1075	assert (!(coro->flags & CF_RUNNING));
		1076
792	Zero (&temp, 1, struct coro);	1077	Zero (&temp, 1, struct coro);
793	temp.save = CORO_SAVE_ALL;	1078	temp.save = CORO_SAVE_ALL;
794		1079
795	if (coro->flags & CF_RUNNING)	1080	if (coro->flags & CF_RUNNING)
796	croak ("FATAL: tried to destroy currently running coroutine");	1081	croak ("FATAL: tried to destroy currently running coroutine");
797		1082
798	save_perl (&temp);	1083	save_perl (aTHX_ &temp);
799	load_perl (coro);	1084	load_perl (aTHX_ coro);
800		1085
801	coro_destroy_stacks ();	1086	coro_destroy_stacks (aTHX);
802		1087
803	load_perl (&temp); /* this will get rid of defsv etc.. */	1088	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
804		1089
805	coro->mainstack = 0;	1090	coro->mainstack = 0;
806	}	1091	}
807		1092
808	cctx_destroy (coro->cctx);	1093	cctx_destroy (coro->cctx);
809	SvREFCNT_dec (coro->args);	1094	SvREFCNT_dec (coro->args);
810	Safefree (coro);	1095
		1096	if (coro->next) coro->next->prev = coro->prev;
		1097	if (coro->prev) coro->prev->next = coro->next;
		1098	if (coro == coro_first) coro_first = coro->next;
		1099
		1100	return 1;
811	}	1101	}
812		1102
813	static int	1103	static int
814	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1104	coro_state_free (pTHX_ SV sv, MAGIC mg)
815	{	1105	{
816	struct coro coro = (struct coro )mg->mg_ptr;	1106	struct coro coro = (struct coro )mg->mg_ptr;
817	mg->mg_ptr = 0;	1107	mg->mg_ptr = 0;
818		1108
		1109	coro->hv = 0;
		1110
		1111	if (--coro->refcnt < 0)
		1112	{
819	coro_state_destroy (coro);	1113	coro_state_destroy (aTHX_ coro);
		1114	Safefree (coro);
		1115	}
820		1116
821	return 0;	1117	return 0;
822	}	1118	}
823		1119
824	static int	1120	static int
…		…
831	return 0;	1127	return 0;
832	}	1128	}
833		1129
834	static MGVTBL coro_state_vtbl = {	1130	static MGVTBL coro_state_vtbl = {
835	0, 0, 0, 0,	1131	0, 0, 0, 0,
836	coro_state_clear,	1132	coro_state_free,
837	0,	1133	0,
838	#ifdef MGf_DUP	1134	#ifdef MGf_DUP
839	coro_state_dup,	1135	coro_state_dup,
840	#else	1136	#else
841	# define MGf_DUP 0	1137	# define MGf_DUP 0
842	#endif	1138	#endif
843	};	1139	};
844		1140
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	1141	static void
868	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1142	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
869	{	1143	{
870	ta->prev = SvSTATE (prev_sv);	1144	ta->prev = SvSTATE (prev_sv);
871	ta->next = SvSTATE (next_sv);	1145	ta->next = SvSTATE (next_sv);
		1146	TRANSFER_CHECK (*ta);
872	}	1147	}
873		1148
874	static void	1149	static void
875	api_transfer (SV prev_sv, SV next_sv)	1150	api_transfer (SV prev_sv, SV next_sv)
876	{	1151	{
		1152	dTHX;
877	struct transfer_args ta;	1153	struct transfer_args ta;
878		1154
879	prepare_transfer (&ta, prev_sv, next_sv);	1155	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
880	TRANSFER (ta);	1156	TRANSFER (ta);
881	}	1157	}
882		1158
883	static int	1159	static int
884	api_save (SV *coro_sv, int new_save)	1160	api_save (SV *coro_sv, int new_save)
885	{	1161	{
		1162	dTHX;
886	struct coro *coro = SvSTATE (coro_sv);	1163	struct coro *coro = SvSTATE (coro_sv);
887	int old_save = coro->save;	1164	int old_save = coro->save;
888		1165
889	if (new_save >= 0)	1166	if (new_save >= 0)
890	coro->save = new_save;	1167	coro->save = new_save;
…		…
892	return old_save;	1169	return old_save;
893	}	1170	}
894		1171
895	/ Coro ******************************************************************/	1172	/ Coro ******************************************************************/
896		1173
897	#define PRIO_MAX 3
898	#define PRIO_HIGH 1
899	#define PRIO_NORMAL 0
900	#define PRIO_LOW -1
901	#define PRIO_IDLE -3
902	#define PRIO_MIN -4
903
904	/* for Coro.pm */
905	static SV *coro_current;
906	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
907	static int coro_nready;
908
909	static void	1174	static void
910	coro_enq (SV *coro_sv)	1175	coro_enq (pTHX_ SV *coro_sv)
911	{	1176	{
912	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1177	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
913	coro_nready++;
914	}	1178	}
915		1179
916	static SV *	1180	static SV *
917	coro_deq (int min_prio)	1181	coro_deq (pTHX_ int min_prio)
918	{	1182	{
919	int prio = PRIO_MAX - PRIO_MIN;	1183	int prio = PRIO_MAX - PRIO_MIN;
920		1184
921	min_prio -= PRIO_MIN;	1185	min_prio -= PRIO_MIN;
922	if (min_prio < 0)	1186	if (min_prio < 0)
923	min_prio = 0;	1187	min_prio = 0;
924		1188
925	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1189	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
926	if (AvFILLp (coro_ready [prio]) >= 0)	1190	if (AvFILLp (coro_ready [prio]) >= 0)
927	{
928	coro_nready--;
929	return av_shift (coro_ready [prio]);	1191	return av_shift (coro_ready [prio]);
930	}
931		1192
932	return 0;	1193	return 0;
933	}	1194	}
934		1195
935	static int	1196	static int
936	api_ready (SV *coro_sv)	1197	api_ready (SV *coro_sv)
937	{	1198	{
		1199	dTHX;
938	struct coro *coro;	1200	struct coro *coro;
939		1201
940	if (SvROK (coro_sv))	1202	if (SvROK (coro_sv))
941	coro_sv = SvRV (coro_sv);	1203	coro_sv = SvRV (coro_sv);
942		1204
943	coro = SvSTATE (coro_sv);	1205	coro = SvSTATE (coro_sv);
944		1206
945	if (coro->flags & CF_READY)	1207	if (coro->flags & CF_READY)
946	return 0;	1208	return 0;
947		1209
948	#if 0 /* this is actually harmless */
949	if (coro->flags & CF_RUNNING)
950	croak ("Coro::ready called on currently running coroutine");
951	#endif
952
953	coro->flags \|= CF_READY;	1210	coro->flags \|= CF_READY;
954		1211
955	LOCK;	1212	LOCK;
956	coro_enq (SvREFCNT_inc (coro_sv));	1213	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1214	++coro_nready;
957	UNLOCK;	1215	UNLOCK;
958		1216
959	return 1;	1217	return 1;
960	}	1218	}
961		1219
962	static int	1220	static int
963	api_is_ready (SV *coro_sv)	1221	api_is_ready (SV *coro_sv)
964	{	1222	{
		1223	dTHX;
965	return !!SvSTATE (coro_sv)->flags & CF_READY;	1224	return !!(SvSTATE (coro_sv)->flags & CF_READY);
966	}	1225	}
967		1226
968	static void	1227	static void
969	prepare_schedule (struct transfer_args *ta)	1228	prepare_schedule (pTHX_ struct transfer_args *ta)
970	{	1229	{
971	SV prev, next;	1230	SV prev_sv, next_sv;
972		1231
973	for (;;)	1232	for (;;)
974	{	1233	{
975	LOCK;	1234	LOCK;
976	next = coro_deq (PRIO_MIN);	1235	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1236
		1237	/* nothing to schedule: call the idle handler */
		1238	if (!next_sv)
		1239	{
		1240	dSP;
		1241	UNLOCK;
		1242
		1243	ENTER;
		1244	SAVETMPS;
		1245
		1246	PUSHMARK (SP);
		1247	PUTBACK;
		1248	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1249
		1250	FREETMPS;
		1251	LEAVE;
		1252	continue;
		1253	}
		1254
		1255	ta->next = SvSTATE (next_sv);
		1256
		1257	/* cannot transfer to destroyed coros, skip and look for next */
		1258	if (ta->next->flags & CF_DESTROYED)
		1259	{
		1260	UNLOCK;
		1261	SvREFCNT_dec (next_sv);
		1262	/* coro_nready is already taken care of by destroy */
		1263	continue;
		1264	}
		1265
		1266	--coro_nready;
977	UNLOCK;	1267	UNLOCK;
978
979	if (next)
980	break;	1268	break;
981
982	{
983	dSP;
984
985	ENTER;
986	SAVETMPS;
987
988	PUSHMARK (SP);
989	PUTBACK;
990	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
991
992	FREETMPS;
993	LEAVE;
994	}	1269	}
995	}
996
997	prev = SvRV (coro_current);
998	SvRV_set (coro_current, next);
999		1270
1000	/* free this only after the transfer */	1271	/* free this only after the transfer */
1001	LOCK;	1272	prev_sv = SvRV (coro_current);
1002	free_coro_mortal ();
1003	UNLOCK;
1004	coro_mortal = prev;
1005
1006	assert (!SvROK(prev));//D
1007	assert (!SvROK(next));//D
1008
1009	ta->prev = SvSTATE (prev);	1273	ta->prev = SvSTATE (prev_sv);
1010	ta->next = SvSTATE (next);	1274	TRANSFER_CHECK (*ta);
1011
1012	assert (ta->next->flags & CF_READY);	1275	assert (ta->next->flags & CF_READY);
1013	ta->next->flags &= ~CF_READY;	1276	ta->next->flags &= ~CF_READY;
		1277	SvRV_set (coro_current, next_sv);
		1278
		1279	LOCK;
		1280	free_coro_mortal (aTHX);
		1281	coro_mortal = prev_sv;
		1282	UNLOCK;
1014	}	1283	}
1015		1284
1016	static void	1285	static void
1017	prepare_cede (struct transfer_args *ta)	1286	prepare_cede (pTHX_ struct transfer_args *ta)
1018	{	1287	{
1019	api_ready (coro_current);	1288	api_ready (coro_current);
1020
1021	prepare_schedule (ta);	1289	prepare_schedule (aTHX_ ta);
		1290	}
		1291
		1292	static int
		1293	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1294	{
		1295	if (coro_nready)
		1296	{
		1297	SV *prev = SvRV (coro_current);
		1298	prepare_schedule (aTHX_ ta);
		1299	api_ready (prev);
		1300	return 1;
		1301	}
		1302	else
		1303	return 0;
1022	}	1304	}
1023		1305
1024	static void	1306	static void
1025	api_schedule (void)	1307	api_schedule (void)
1026	{	1308	{
		1309	dTHX;
1027	struct transfer_args ta;	1310	struct transfer_args ta;
1028		1311
1029	prepare_schedule (&ta);	1312	prepare_schedule (aTHX_ &ta);
1030	TRANSFER (ta);	1313	TRANSFER (ta);
1031	}	1314	}
1032		1315
1033	static void	1316	static int
1034	api_cede (void)	1317	api_cede (void)
1035	{	1318	{
		1319	dTHX;
1036	struct transfer_args ta;	1320	struct transfer_args ta;
1037		1321
1038	prepare_cede (&ta);	1322	prepare_cede (aTHX_ &ta);
		1323
		1324	if (ta.prev != ta.next)
		1325	{
1039	TRANSFER (ta);	1326	TRANSFER (ta);
		1327	return 1;
		1328	}
		1329	else
		1330	return 0;
		1331	}
		1332
		1333	static int
		1334	api_cede_notself (void)
		1335	{
		1336	dTHX;
		1337	struct transfer_args ta;
		1338
		1339	if (prepare_cede_notself (aTHX_ &ta))
		1340	{
		1341	TRANSFER (ta);
		1342	return 1;
		1343	}
		1344	else
		1345	return 0;
1040	}	1346	}
1041		1347
1042	MODULE = Coro::State PACKAGE = Coro::State	1348	MODULE = Coro::State PACKAGE = Coro::State
1043		1349
1044	PROTOTYPES: DISABLE	1350	PROTOTYPES: DISABLE
…		…
1049	MUTEX_INIT (&coro_mutex);	1355	MUTEX_INIT (&coro_mutex);
1050	#endif	1356	#endif
1051	BOOT_PAGESIZE;	1357	BOOT_PAGESIZE;
1052		1358
1053	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1359	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1360
		1361	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1362	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1363	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1364	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1054		1365
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1366	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1056	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1367	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1057	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1368	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1058	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1369	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1370	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1371	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1059	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1372	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1060		1373
1061	main_mainstack = PL_mainstack;	1374	main_mainstack = PL_mainstack;
		1375	main_top_env = PL_top_env;
		1376
		1377	while (main_top_env->je_prev)
		1378	main_top_env = main_top_env->je_prev;
1062		1379
1063	coroapi.ver = CORO_API_VERSION;	1380	coroapi.ver = CORO_API_VERSION;
1064	coroapi.transfer = api_transfer;	1381	coroapi.transfer = api_transfer;
1065		1382
1066	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1383	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1074	HV *hv;	1391	HV *hv;
1075	int i;	1392	int i;
1076		1393
1077	Newz (0, coro, 1, struct coro);	1394	Newz (0, coro, 1, struct coro);
1078	coro->args = newAV ();	1395	coro->args = newAV ();
1079	coro->save = CORO_SAVE_ALL;	1396	coro->save = CORO_SAVE_DEF;
1080	coro->flags = CF_NEW;	1397	coro->flags = CF_NEW;
1081		1398
		1399	if (coro_first) coro_first->prev = coro;
		1400	coro->next = coro_first;
		1401	coro_first = coro;
		1402
1082	hv = newHV ();	1403	coro->hv = hv = newHV ();
1083	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1404	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1084	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1405	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1085		1406
1086	for (i = 1; i < items; i++)	1407	for (i = 1; i < items; i++)
1087	av_push (coro->args, newSVsv (ST (i)));	1408	av_push (coro->args, newSVsv (ST (i)));
…		…
1094	CODE:	1415	CODE:
1095	RETVAL = api_save (coro, new_save);	1416	RETVAL = api_save (coro, new_save);
1096	OUTPUT:	1417	OUTPUT:
1097	RETVAL	1418	RETVAL
1098		1419
		1420	int
		1421	save_also (SV *coro_sv, int save_also)
		1422	CODE:
		1423	{
		1424	struct coro *coro = SvSTATE (coro_sv);
		1425	RETVAL = coro->save;
		1426	coro->save \|= save_also;
		1427	}
		1428	OUTPUT:
		1429	RETVAL
		1430
1099	void	1431	void
1100	_set_stacklevel (...)	1432	_set_stacklevel (...)
1101	ALIAS:	1433	ALIAS:
1102	Coro::State::transfer = 1	1434	Coro::State::transfer = 1
1103	Coro::schedule = 2	1435	Coro::schedule = 2
1104	Coro::cede = 3	1436	Coro::cede = 3
		1437	Coro::cede_notself = 4
1105	CODE:	1438	CODE:
1106	{	1439	{
1107	struct transfer_args ta;	1440	struct transfer_args ta;
1108		1441
1109	switch (ix)	1442	switch (ix)
…		…
1115		1448
1116	case 1:	1449	case 1:
1117	if (items != 2)	1450	if (items != 2)
1118	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1451	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1119		1452
1120	prepare_transfer (&ta, ST (0), ST (1));	1453	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1121	break;	1454	break;
1122		1455
1123	case 2:	1456	case 2:
1124	prepare_schedule (&ta);	1457	prepare_schedule (aTHX_ &ta);
1125	break;	1458	break;
1126		1459
1127	case 3:	1460	case 3:
1128	prepare_cede (&ta);	1461	prepare_cede (aTHX_ &ta);
		1462	break;
		1463
		1464	case 4:
		1465	if (!prepare_cede_notself (aTHX_ &ta))
		1466	XSRETURN_EMPTY;
		1467
1129	break;	1468	break;
1130	}	1469	}
1131		1470
		1471	BARRIER;
1132	TRANSFER (ta);	1472	TRANSFER (ta);
1133	}
1134		1473
1135	void	1474	if (GIMME_V != G_VOID && ta.next != ta.prev)
1136	_clone_state_from (SV dst, SV src)	1475	XSRETURN_YES;
		1476	}
		1477
		1478	bool
		1479	_destroy (SV *coro_sv)
1137	CODE:	1480	CODE:
1138	{	1481	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1139	struct coro *coro_src = SvSTATE (src);	1482	OUTPUT:
1140		1483	RETVAL
1141	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1142
1143	++coro_src->refcnt;
1144	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1145	}
1146		1484
1147	void	1485	void
1148	_exit (code)	1486	_exit (code)
1149	int code	1487	int code
1150	PROTOTYPE: $	1488	PROTOTYPE: $
1151	CODE:	1489	CODE:
1152	_exit (code);	1490	_exit (code);
1153		1491
1154	int	1492	int
		1493	cctx_stacksize (int new_stacksize = 0)
		1494	CODE:
		1495	RETVAL = coro_stacksize;
		1496	if (new_stacksize)
		1497	coro_stacksize = new_stacksize;
		1498	OUTPUT:
		1499	RETVAL
		1500
		1501	int
1155	cctx_count ()	1502	cctx_count ()
1156	CODE:	1503	CODE:
1157	RETVAL = cctx_count;	1504	RETVAL = cctx_count;
1158	OUTPUT:	1505	OUTPUT:
1159	RETVAL	1506	RETVAL
…		…
1163	CODE:	1510	CODE:
1164	RETVAL = cctx_idle;	1511	RETVAL = cctx_idle;
1165	OUTPUT:	1512	OUTPUT:
1166	RETVAL	1513	RETVAL
1167		1514
		1515	void
		1516	list ()
		1517	PPCODE:
		1518	{
		1519	struct coro *coro;
		1520	for (coro = coro_first; coro; coro = coro->next)
		1521	if (coro->hv)
		1522	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1523	}
		1524
		1525	void
		1526	call (Coro::State coro, SV *coderef)
		1527	ALIAS:
		1528	eval = 1
		1529	CODE:
		1530	{
		1531	if (coro->mainstack)
		1532	{
		1533	struct coro temp;
		1534	Zero (&temp, 1, struct coro);
		1535	temp.save = CORO_SAVE_ALL;
		1536
		1537	if (!(coro->flags & CF_RUNNING))
		1538	{
		1539	save_perl (aTHX_ &temp);
		1540	load_perl (aTHX_ coro);
		1541	}
		1542
		1543	{
		1544	dSP;
		1545	ENTER;
		1546	SAVETMPS;
		1547	PUSHMARK (SP);
		1548	PUTBACK;
		1549	if (ix)
		1550	eval_sv (coderef, 0);
		1551	else
		1552	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1553	SPAGAIN;
		1554	FREETMPS;
		1555	LEAVE;
		1556	PUTBACK;
		1557	}
		1558
		1559	if (!(coro->flags & CF_RUNNING))
		1560	{
		1561	save_perl (aTHX_ coro);
		1562	load_perl (aTHX_ &temp);
		1563	}
		1564	}
		1565	}
		1566
		1567	SV *
		1568	is_ready (Coro::State coro)
		1569	PROTOTYPE: $
		1570	ALIAS:
		1571	is_ready = CF_READY
		1572	is_running = CF_RUNNING
		1573	is_new = CF_NEW
		1574	is_destroyed = CF_DESTROYED
		1575	CODE:
		1576	RETVAL = boolSV (coro->flags & ix);
		1577	OUTPUT:
		1578	RETVAL
		1579
		1580	void
		1581	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1582	CODE:
		1583	if (flags & CC_TRACE)
		1584	{
		1585	if (!coro->cctx)
		1586	coro->cctx = cctx_new ();
		1587	else if (!(coro->cctx->flags & CC_TRACE))
		1588	croak ("cannot enable tracing on coroutine with custom stack");
		1589
		1590	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1591	}
		1592	else
		1593	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1594	{
		1595	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1596	coro->cctx->flags \|= CC_NOREUSE;
		1597
		1598	if (coro->flags & CF_RUNNING)
		1599	PL_runops = RUNOPS_DEFAULT;
		1600	else
		1601	coro->runops = RUNOPS_DEFAULT;
		1602	}
		1603
		1604	SV *
		1605	has_stack (Coro::State coro)
		1606	PROTOTYPE: $
		1607	CODE:
		1608	RETVAL = boolSV (!!coro->cctx);
		1609	OUTPUT:
		1610	RETVAL
		1611
		1612	int
		1613	is_traced (Coro::State coro)
		1614	PROTOTYPE: $
		1615	CODE:
		1616	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620	IV
		1621	rss (Coro::State coro)
		1622	PROTOTYPE: $
		1623	ALIAS:
		1624	usecount = 1
		1625	CODE:
		1626	switch (ix)
		1627	{
		1628	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1629	case 1: RETVAL = coro->usecount; break;
		1630	}
		1631	OUTPUT:
		1632	RETVAL
		1633
		1634
1168	MODULE = Coro::State PACKAGE = Coro	1635	MODULE = Coro::State PACKAGE = Coro
1169		1636
1170	BOOT:	1637	BOOT:
1171	{	1638	{
1172	int i;	1639	int i;
		1640
		1641	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1642	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1643	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1644
		1645	coro_current = get_sv ("Coro::current", FALSE);
		1646	SvREADONLY_on (coro_current);
1173		1647
1174	coro_stash = gv_stashpv ("Coro", TRUE);	1648	coro_stash = gv_stashpv ("Coro", TRUE);
1175		1649
1176	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1650	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1177	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1651	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1178	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1652	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1179	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1653	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1180	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1654	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1181	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1655	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1182		1656
1183	coro_current = get_sv ("Coro::current", FALSE);
1184	SvREADONLY_on (coro_current);
1185
1186	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1657	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1187	coro_ready[i] = newAV ();	1658	coro_ready[i] = newAV ();
1188		1659
1189	{	1660	{
1190	SV *sv = perl_get_sv("Coro::API", 1);	1661	SV *sv = perl_get_sv("Coro::API", 1);
1191		1662
1192	coroapi.schedule = api_schedule;	1663	coroapi.schedule = api_schedule;
1193	coroapi.save = api_save;	1664	coroapi.save = api_save;
1194	coroapi.cede = api_cede;	1665	coroapi.cede = api_cede;
		1666	coroapi.cede_notself = api_cede_notself;
1195	coroapi.ready = api_ready;	1667	coroapi.ready = api_ready;
1196	coroapi.is_ready = api_is_ready;	1668	coroapi.is_ready = api_is_ready;
1197	coroapi.nready = &coro_nready;	1669	coroapi.nready = &coro_nready;
1198	coroapi.current = coro_current;	1670	coroapi.current = coro_current;
1199		1671
1200	GCoroAPI = &coroapi;	1672	GCoroAPI = &coroapi;
1201	sv_setiv (sv, (IV)&coroapi);	1673	sv_setiv (sv, (IV)&coroapi);
1202	SvREADONLY_on (sv);	1674	SvREADONLY_on (sv);
1203	}	1675	}
…		…
1219	RETVAL = coro->prio;	1691	RETVAL = coro->prio;
1220		1692
1221	if (items > 1)	1693	if (items > 1)
1222	{	1694	{
1223	if (ix)	1695	if (ix)
1224	newprio += coro->prio;	1696	newprio = coro->prio - newprio;
1225		1697
1226	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1698	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1227	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1699	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1228		1700
1229	coro->prio = newprio;	1701	coro->prio = newprio;
1230	}	1702	}
1231	}	1703	}
		1704	OUTPUT:
		1705	RETVAL
1232		1706
1233	SV *	1707	SV *
1234	ready (SV *self)	1708	ready (SV *self)
1235	PROTOTYPE: $	1709	PROTOTYPE: $
1236	CODE:	1710	CODE:
1237	RETVAL = boolSV (api_ready (self));	1711	RETVAL = boolSV (api_ready (self));
1238	OUTPUT:	1712	OUTPUT:
1239	RETVAL	1713	RETVAL
1240		1714
1241	SV *
1242	is_ready (SV *self)
1243	PROTOTYPE: $
1244	CODE:
1245	RETVAL = boolSV (api_is_ready (self));
1246	OUTPUT:
1247	RETVAL
1248
1249	int	1715	int
1250	nready (...)	1716	nready (...)
1251	PROTOTYPE:	1717	PROTOTYPE:
1252	CODE:	1718	CODE:
1253	RETVAL = coro_nready;	1719	RETVAL = coro_nready;
1254	OUTPUT:	1720	OUTPUT:
1255	RETVAL	1721	RETVAL
1256		1722
		1723	# for async_pool speedup
		1724	void
		1725	_pool_1 (SV *cb)
		1726	CODE:
		1727	{
		1728	int i, len;
		1729	HV hv = (HV )SvRV (coro_current);
		1730	AV *defav = GvAV (PL_defgv);
		1731	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1732	AV *invoke_av;
		1733
		1734	if (!invoke)
		1735	croak ("\3terminate\2\n");
		1736
		1737	hv_store (hv, "desc", sizeof ("desc") - 1,
		1738	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1739
		1740	invoke_av = (AV *)SvRV (invoke);
		1741	len = av_len (invoke_av);
		1742
		1743	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1744
		1745	if (len > 0)
		1746	{
		1747	av_fill (defav, len - 1);
		1748	for (i = 0; i < len; ++i)
		1749	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1750	}
		1751
		1752	SvREFCNT_dec (invoke);
		1753	}
		1754
		1755	void
		1756	_pool_2 (SV *cb)
		1757	CODE:
		1758	{
		1759	struct coro *coro = SvSTATE (coro_current);
		1760
		1761	sv_setsv (cb, &PL_sv_undef);
		1762
		1763	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1764	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1765	croak ("\3terminate\2\n");
		1766
		1767	av_clear (GvAV (PL_defgv));
		1768	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1769	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1770	coro->save = CORO_SAVE_DEF;
		1771	coro->prio = 0;
		1772	av_push (av_async_pool, newSVsv (coro_current));
		1773	}
		1774
		1775
1257	MODULE = Coro::State PACKAGE = Coro::AIO	1776	MODULE = Coro::State PACKAGE = Coro::AIO
1258		1777
1259	SV *	1778	SV *
1260	_get_state ()	1779	_get_state ()
1261	CODE:	1780	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC vs. Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC vs.
Revision 1.172 by root, Sun Sep 30 13:15:01 2007 UTC