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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC vs.
Revision 1.175 by root, Sun Sep 30 13:43:45 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	/* 5.8.7 */
44	#ifndef SvRV_set
45	# define SvRV_set(s,v) SvRV(s) = (v)
46	#endif
47
48	#include <stdio.h>	11	#include <stdio.h>
49	#include <errno.h>	12	#include <errno.h>
50	#include <assert.h>	13	#include <assert.h>
51
52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
53	# undef STACKGUARD
54	#endif
55
56	#ifndef STACKGUARD
57	# define STACKGUARD 0
58	#endif
59		14
60	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
61	# include <unistd.h>	16	# include <unistd.h>
62	# include <sys/mman.h>	17	# include <sys/mman.h>
63	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
78	#else	33	#else
79	# define PAGESIZE 0	34	# define PAGESIZE 0
80	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
81	#endif	36	#endif
82		37
83	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
84	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
85	* 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. */
86	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
87	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
88		97
89	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
90		99
91	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
93	#else	103	#else
94	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
95	#endif	106	#endif
96		107
97	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
98		109
99	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
105	#else	116	#else
106	# define LOCK (void)0	117	# define LOCK (void)0
107	# define UNLOCK (void)0	118	# define UNLOCK (void)0
108	#endif	119	#endif
109		120
		121	/* helper storage struct for Coro::AIO */
110	struct io_state	122	struct io_state
111	{	123	{
112	int errorno;	124	int errorno;
113	I32 laststype;	125	I32 laststype;
114	int laststatval;	126	int laststatval;
115	Stat_t statcache;	127	Stat_t statcache;
116	};	128	};
117		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
118	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
119	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;
120	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
121	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
122		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
123	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
124	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	};
125		153
126	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
127	typedef struct coro_cctx {	155	typedef struct coro_cctx {
128	struct coro_cctx *next;	156	struct coro_cctx *next;
129		157
130	/* the stack */	158	/* the stack */
131	void *sptr;	159	void *sptr;
132	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
133		161
134	/* cpu state */	162	/* cpu state */
135	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 */
136	JMPENV *top_env;	165	JMPENV *top_env;
137	coro_context cctx;	166	coro_context cctx;
138		167
139	int inuse;
140
141	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
142	int valgrind_id;	169	int valgrind_id;
143	#endif	170	#endif
		171	unsigned char flags;
144	} coro_cctx;	172	} coro_cctx;
145		173
146	enum {	174	enum {
147	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
148	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
149	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 */
150	};	179	};
151		180
152	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
153	struct coro {	182	struct coro {
154	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
…		…
162		191
163	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
164	AV defav; / @_ */	193	AV defav; / @_ */
165	SV defsv; / $_ */	194	SV defsv; / $_ */
166	SV errsv; / $@ */	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
167	SV irssv; / $/ */	197	SV irssv; / $/ */
168	SV irssv_sv; / real $/ cache */	198	SV irssv_sv; / real $/ cache */
169		199
170	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
171	# include "state.h"	201	# include "state.h"
172	#undef VAR	202	#undef VAR
173		203
		204	/* statistics */
		205	int usecount; /* number of switches to this coro */
		206
174	/* coro process data */	207	/* coro process data */
175	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 */
176	};	213	};
177		214
178	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
180		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
181	static AV *	235	static AV *
182	coro_clone_padlist (CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
183	{	237	{
184	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	239	AV newpadlist, newpad;
186		240
187	newpadlist = newAV ();	241	newpadlist = newAV ();
…		…
199		253
200	return newpadlist;	254	return newpadlist;
201	}	255	}
202		256
203	static void	257	static void
204	free_padlist (AV *padlist)	258	free_padlist (pTHX_ AV *padlist)
205	{	259	{
206	/* may be during global destruction */	260	/* may be during global destruction */
207	if (SvREFCNT (padlist))	261	if (SvREFCNT (padlist))
208	{	262	{
209	I32 i = AvFILLp (padlist);	263	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	284	AV *padlist;
231	AV av = (AV )mg->mg_obj;	285	AV av = (AV )mg->mg_obj;
232		286
233	/* casting is fun. */	287	/* casting is fun. */
234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	288	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
235	free_padlist (padlist);	289	free_padlist (aTHX_ padlist);
236		290
237	SvREFCNT_dec (av);	291	SvREFCNT_dec (av);
238		292
239	return 0;	293	return 0;
240	}	294	}
…		…
248	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
249	? SvMAGIC (cv) \	303	? SvMAGIC (cv) \
250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
251	: 0	305	: 0
252		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
253	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
254	static void	334	static void
255	get_padlist (CV *cv)	335	get_padlist (pTHX_ CV *cv)
256	{	336	{
257	MAGIC *mg = CORO_MAGIC (cv);	337	MAGIC *mg = CORO_MAGIC (cv);
258	AV *av;	338	AV *av;
259		339
260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262	else	342	else
263	{	343	{
264	#if 0	344	#if CORO_PREFER_PERL_FUNCTIONS
265	/* this is probably cleaner, but also slower? */	345	/* this is probably cleaner, but also slower? */
266	CV *cp = Perl_cv_clone (cv);	346	CV *cp = Perl_cv_clone (cv);
267	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
268	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
269	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
270	#else	350	#else
271	CvPADLIST (cv) = coro_clone_padlist (cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272	#endif	352	#endif
273	}	353	}
274	}	354	}
275		355
276	static void	356	static void
277	put_padlist (CV *cv)	357	put_padlist (pTHX_ CV *cv)
278	{	358	{
279	MAGIC *mg = CORO_MAGIC (cv);	359	MAGIC *mg = CORO_MAGIC (cv);
280	AV *av;	360	AV *av;
281		361
282	if (!mg)	362	if (!mg)
…		…
293	av_extend (av, AvMAX (av) + 1);	373	av_extend (av, AvMAX (av) + 1);
294		374
295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296	}	376	}
297		377
		378	/ load & save, init *****************************************************/
		379
298	#define SB do {	380	#define SB do {
299	#define SE } while (0)	381	#define SE } while (0)
300		382
301	#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
302		384
303	static void	385	static void
304	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
305	{	387	{
306	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
307	# include "state.h"	389	# include "state.h"
308	#undef VAR	390	#undef VAR
309		391
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		396
313	if (c->irssv)	397	if (c->irssv)
314	{	398	{
315	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	399	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		400	{
316	SvREFCNT_dec (c->irssv);	401	SvREFCNT_dec (c->irssv);
		402	c->irssv = 0;
		403	}
317	else	404	else
318	{	405	{
319	REPLACE_SV (PL_rs, c->irssv);	406	REPLACE_SV (PL_rs, c->irssv);
320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321	sv_setsv (c->irssv_sv, PL_rs);	408	sv_setsv (c->irssv_sv, PL_rs);
…		…
327	CV *cv;	414	CV *cv;
328		415
329	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
330	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
331	{	418	{
332	put_padlist (cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvDEPTH (cv) = PTR2IV (POPs);	420	CvDEPTH (cv) = PTR2IV (POPs);
334	CvPADLIST (cv) = (AV *)POPs;	421	CvPADLIST (cv) = (AV *)POPs;
335	}	422	}
336		423
337	PUTBACK;	424	PUTBACK;
338	}	425	}
339	}	426	}
340		427
341	static void	428	static void
342	save_perl (Coro__State c)	429	save_perl (pTHX_ Coro__State c)
343	{	430	{
344	{	431	{
345	dSP;	432	dSP;
346	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
347	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
350	/*	437	/*
351	* 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
352	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
353	*/	440	*/
354		441
355	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
356	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
357	for (;;)	444	for (;;)
358	{	445	{
359	while (cxix >= 0)	446	while (cxix >= 0)
360	{	447	{
361	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
362		449
363	if (CxTYPE (cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
364	{	451	{
365	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
366		453
367	if (CvDEPTH (cv))	454	if (CvDEPTH (cv))
368	{	455	{
369	EXTEND (SP, 3);	456	EXTEND (SP, 3);
370
371	PUSHs ((SV *)CvPADLIST (cv));	457	PUSHs ((SV *)CvPADLIST (cv));
372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
374		460
375	CvDEPTH (cv) = 0;	461	CvDEPTH (cv) = 0;
376	get_padlist (cv);	462	get_padlist (aTHX_ cv);
377	}	463	}
378	}	464	}
379	#ifdef CXt_FORMAT
380	else if (CxTYPE (cx) == CXt_FORMAT)
381	{
382	/* I never used formats, so how should I know how these are implemented? */
383	/* my bold guess is as a simple, plain sub... */
384	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
385	}
386	#endif
387	}	465	}
388		466
389	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
390	break;	468	break;
391		469
392	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
393	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
394	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
395	}	473	}
396		474
397	PUTBACK;	475	PUTBACK;
398	}	476	}
399		477
400	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;
401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
402	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;
403	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;
404		483
405	#define VAR(name,type)c->name = PL_ ## name;	484	#define VAR(name,type)c->name = PL_ ## name;
406	# include "state.h"	485	# include "state.h"
407	#undef VAR	486	#undef VAR
…		…
411	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
412	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
413	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
414	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
415	*/	494	*/
		495	#if CORO_PREFER_PERL_FUNCTIONS
		496	# define coro_init_stacks init_stacks
		497	#else
416	static void	498	static void
417	coro_init_stacks ()	499	coro_init_stacks (pTHX)
418	{	500	{
419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	501	PL_curstackinfo = new_stackinfo(64, 6);
420	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
421	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
423		505
424	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
425	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
427		509
428	New(50,PL_tmps_stack,128,SV*);	510	New(50,PL_tmps_stack,64,SV*);
429	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
430	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
431	PL_tmps_max = 128;	513	PL_tmps_max = 64;
432		514
433	New(54,PL_markstack,32,I32);	515	New(54,PL_markstack,16,I32);
434	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
435	PL_markstack_max = PL_markstack + 32;	517	PL_markstack_max = PL_markstack + 16;
436		518
437	#ifdef SET_MARK_OFFSET	519	#ifdef SET_MARK_OFFSET
438	SET_MARK_OFFSET;	520	SET_MARK_OFFSET;
439	#endif	521	#endif
440		522
441	New(54,PL_scopestack,32,I32);	523	New(54,PL_scopestack,16,I32);
442	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
443	PL_scopestack_max = 32;	525	PL_scopestack_max = 16;
444		526
445	New(54,PL_savestack,64,ANY);	527	New(54,PL_savestack,64,ANY);
446	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
447	PL_savestack_max = 64;	529	PL_savestack_max = 64;
448		530
449	#if !PERL_VERSION_ATLEAST (5,9,0)	531	#if !PERL_VERSION_ATLEAST (5,9,0)
450	New(54,PL_retstack,16,OP*);	532	New(54,PL_retstack,4,OP*);
451	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
452	PL_retstack_max = 16;	534	PL_retstack_max = 4;
453	#endif	535	#endif
454	}	536	}
		537	#endif
455		538
456	/*	539	/*
457	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
458	*/	541	*/
459	static void	542	static void
460	coro_destroy_stacks ()	543	coro_destroy_stacks (pTHX)
461	{	544	{
462	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
463	{	546	{
464	/* is this ugly, I ask? */	547	/* restore all saved variables and stuff */
465	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
		549	assert (PL_tmps_floor == -1);
466		550
467	/* sure it is, but more important: is it correct?? :/ */	551	/* free all temporaries */
468	FREETMPS;	552	FREETMPS;
		553	assert (PL_tmps_ix == -1);
469		554
		555	/* unwind all extra stacks */
470	/POPSTACK_TO (PL_mainstack);//D//use/	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
471	}	560	}
472		561
473	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
474	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
475		564
476	while (PL_curstackinfo)	565	while (PL_curstackinfo)
477	{	566	{
478	PERL_SI *p = PL_curstackinfo->si_prev;	567	PERL_SI *p = PL_curstackinfo->si_prev;
479		568
480	{ /D//remove/
481	dSP;
482	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
483	PUTBACK; /* possibly superfluous */
484	}
485
486	if (!IN_DESTRUCT)	569	if (!IN_DESTRUCT)
487	{
488	dounwind (-1);/D//remove/
489	SvREFCNT_dec (PL_curstackinfo->si_stack);	570	SvREFCNT_dec (PL_curstackinfo->si_stack);
490	}
491		571
492	Safefree (PL_curstackinfo->si_cxstack);	572	Safefree (PL_curstackinfo->si_cxstack);
493	Safefree (PL_curstackinfo);	573	Safefree (PL_curstackinfo);
494	PL_curstackinfo = p;	574	PL_curstackinfo = p;
495	}	575	}
…		…
501	#if !PERL_VERSION_ATLEAST (5,9,0)	581	#if !PERL_VERSION_ATLEAST (5,9,0)
502	Safefree (PL_retstack);	582	Safefree (PL_retstack);
503	#endif	583	#endif
504	}	584	}
505		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
506	static void	619	static void
507	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
508	{	621	{
509	/*	622	/*
510	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
511	*/	624	*/
512
513	coro_init_stacks ();	625	coro_init_stacks (aTHX);
514		626
		627	PL_runops = RUNOPS_DEFAULT;
515	PL_curcop = &PL_compiling;	628	PL_curcop = &PL_compiling;
516	PL_in_eval = EVAL_NULL;	629	PL_in_eval = EVAL_NULL;
		630	PL_comppad = 0;
517	PL_curpm = 0;	631	PL_curpm = 0;
518	PL_localizing = 0;	632	PL_localizing = 0;
519	PL_dirty = 0;	633	PL_dirty = 0;
520	PL_restartop = 0;	634	PL_restartop = 0;
521		635
…		…
529	Zero (&myop, 1, LOGOP);	643	Zero (&myop, 1, LOGOP);
530	myop.op_next = Nullop;	644	myop.op_next = Nullop;
531	myop.op_flags = OPf_WANT_VOID;	645	myop.op_flags = OPf_WANT_VOID;
532		646
533	PUSHMARK (SP);	647	PUSHMARK (SP);
534	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	648	XPUSHs (av_shift (GvAV (PL_defgv)));
535	PUTBACK;	649	PUTBACK;
536	PL_op = (OP *)&myop;	650	PL_op = (OP *)&myop;
537	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
538	SPAGAIN;	652	SPAGAIN;
539	}	653	}
540		654
541	ENTER; /* necessary e.g. for dounwind */	655	ENTER; /* necessary e.g. for dounwind */
542	}	656	}
543		657
544	static void	658	static void
545	free_coro_mortal ()	659	free_coro_mortal (pTHX)
546	{	660	{
547	if (coro_mortal)	661	if (coro_mortal)
548	{	662	{
549	SvREFCNT_dec (coro_mortal);	663	SvREFCNT_dec (coro_mortal);
550	coro_mortal = 0;	664	coro_mortal = 0;
551	}	665	}
552	}	666	}
553		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 (cctx->flags & CC_TRACE_ALL)
		681	{
		682	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		683	{
		684	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		685	SV bot, top;
		686	AV av = newAV (); / return values */
		687	SV **cb;
		688	dSP;
		689
		690	GV *gv = CvGV (cx->blk_sub.cv);
		691	SV *fullname = sv_2mortal (newSV (0));
		692	if (isGV (gv))
		693	gv_efullname3 (fullname, gv, 0);
		694
		695	bot = PL_stack_base + cx->blk_oldsp + 1;
		696	top = cx->blk_gimme == G_ARRAY ? SP + 1
		697	: cx->blk_gimme == G_SCALAR ? bot + 1
		698	: bot;
		699
		700	while (bot < top)
		701	av_push (av, SvREFCNT_inc (*bot++));
		702
		703	PL_runops = RUNOPS_DEFAULT;
		704	ENTER;
		705	SAVETMPS;
		706	EXTEND (SP, 3);
		707	PUSHMARK (SP);
		708	PUSHs (&PL_sv_no);
		709	PUSHs (fullname);
		710	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		711	PUTBACK;
		712	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		713	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		714	SPAGAIN;
		715	FREETMPS;
		716	LEAVE;
		717	PL_runops = runops_trace;
		718	}
		719
		720	if (oldcop != PL_curcop)
		721	{
		722	oldcop = PL_curcop;
		723
		724	if (PL_curcop != &PL_compiling)
		725	{
		726	SV **cb;
		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	runops_proc_t old_runops = PL_runops;
		735	dSP;
		736	GV *gv = CvGV (cx->blk_sub.cv);
		737	SV *fullname = sv_2mortal (newSV (0));
		738
		739	if (isGV (gv))
		740	gv_efullname3 (fullname, gv, 0);
		741
		742	PL_runops = RUNOPS_DEFAULT;
		743	ENTER;
		744	SAVETMPS;
		745	EXTEND (SP, 3);
		746	PUSHMARK (SP);
		747	PUSHs (&PL_sv_yes);
		748	PUSHs (fullname);
		749	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		750	PUTBACK;
		751	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		752	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		753	SPAGAIN;
		754	FREETMPS;
		755	LEAVE;
		756	PL_runops = runops_trace;
		757	}
		758
		759	oldcxix = cxstack_ix;
		760	}
		761
		762	if (cctx->flags & CC_TRACE_LINE)
		763	{
		764	dSP;
		765
		766	PL_runops = RUNOPS_DEFAULT;
		767	ENTER;
		768	SAVETMPS;
		769	EXTEND (SP, 3);
		770	PL_runops = RUNOPS_DEFAULT;
		771	PUSHMARK (SP);
		772	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		773	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		774	PUTBACK;
		775	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		776	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		777	SPAGAIN;
		778	FREETMPS;
		779	LEAVE;
		780	PL_runops = runops_trace;
		781	}
		782	}
		783	}
		784	}
		785	}
		786
		787	TAINT_NOT;
		788	return 0;
		789	}
		790
554	/* inject a fake call to Coro::State::_cctx_init into the execution */	791	/* inject a fake call to Coro::State::_cctx_init into the execution */
		792	/* _cctx_init should be careful, as it could be called at almost any time */
		793	/* during execution of a perl program */
555	static void NOINLINE	794	static void NOINLINE
556	prepare_cctx (coro_cctx *cctx)	795	prepare_cctx (pTHX_ coro_cctx *cctx)
557	{	796	{
558	dSP;	797	dSP;
559	LOGOP myop;	798	LOGOP myop;
		799
		800	PL_top_env = &PL_start_env;
		801
		802	if (cctx->flags & CC_TRACE)
		803	PL_runops = runops_trace;
560		804
561	Zero (&myop, 1, LOGOP);	805	Zero (&myop, 1, LOGOP);
562	myop.op_next = PL_op;	806	myop.op_next = PL_op;
563	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	807	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
564		808
…		…
570	PL_op = (OP *)&myop;	814	PL_op = (OP *)&myop;
571	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	815	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
572	SPAGAIN;	816	SPAGAIN;
573	}	817	}
574		818
		819	/*
		820	* this is a _very_ stripped down perl interpreter ;)
		821	*/
575	static void	822	static void
576	coro_run (void *arg)	823	coro_run (void *arg)
577	{	824	{
		825	dTHX;
		826
578	/* coro_run is the alternative tail of transfer(), so unlock here. */	827	/* coro_run is the alternative tail of transfer(), so unlock here. */
579	UNLOCK;	828	UNLOCK;
580		829
581	/*	830	/* we now skip the entersub that lead to transfer() */
582	* this is a _very_ stripped down perl interpreter ;)	831	PL_op = PL_op->op_next;
583	*/
584	PL_top_env = &PL_start_env;
585		832
586	/* inject call to cctx_init */	833	/* inject a fake subroutine call to cctx_init */
587	prepare_cctx ((coro_cctx *)arg);	834	prepare_cctx (aTHX_ (coro_cctx *)arg);
588		835
589	/* somebody will hit me for both perl_run and PL_restartop */	836	/* somebody or something will hit me for both perl_run and PL_restartop */
590	PL_restartop = PL_op;	837	PL_restartop = PL_op;
591	perl_run (PL_curinterp);	838	perl_run (PL_curinterp);
592		839
593	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	840	/*
594	abort ();	841	* If perl-run returns we assume exit() was being called or the coro
		842	* fell off the end, which seems to be the only valid (non-bug)
		843	* reason for perl_run to return. We try to exit by jumping to the
		844	* bootstrap-time "top" top_env, as we cannot restore the "main"
		845	* coroutine as Coro has no such concept
		846	*/
		847	PL_top_env = main_top_env;
		848	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
595	}	849	}
596		850
597	static coro_cctx *	851	static coro_cctx *
598	cctx_new ()	852	cctx_new ()
599	{	853	{
600	coro_cctx *cctx;	854	coro_cctx *cctx;
		855	void *stack_start;
		856	size_t stack_size;
601		857
602	++cctx_count;	858	++cctx_count;
603		859
604	Newz (0, cctx, 1, coro_cctx);	860	Newz (0, cctx, 1, coro_cctx);
605		861
606	#if HAVE_MMAP	862	#if HAVE_MMAP
607		863
608	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
609	/* mmap supposedly does allocate-on-write for us */	865	/* mmap supposedly does allocate-on-write for us */
610	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	866	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
611		867
612	if (cctx->sptr == (void *)-1)	868	if (cctx->sptr != (void *)-1)
613	{
614	perror ("FATAL: unable to mmap stack for coroutine");
615	_exit (EXIT_FAILURE);
616	}	869	{
617
618	# if STACKGUARD	870	# if CORO_STACKGUARD
619	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	871	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
620	# endif	872	# endif
		873	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		874	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		875	cctx->flags \|= CC_MAPPED;
		876	}
		877	else
		878	#endif
		879	{
		880	cctx->ssize = coro_stacksize * (long)sizeof (long);
		881	New (0, cctx->sptr, coro_stacksize, long);
621		882
622	#else
623
624	cctx->ssize = STACKSIZE * (long)sizeof (long);
625	New (0, cctx->sptr, STACKSIZE, long);
626
627	if (!cctx->sptr)	883	if (!cctx->sptr)
628	{	884	{
629	perror ("FATAL: unable to malloc stack for coroutine");	885	perror ("FATAL: unable to allocate stack for coroutine");
630	_exit (EXIT_FAILURE);	886	_exit (EXIT_FAILURE);
631	}	887	}
632		888
633	#endif	889	stack_start = cctx->sptr;
		890	stack_size = cctx->ssize;
		891	}
634		892
635	#if USE_VALGRIND	893	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
636	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
637	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
638	cctx->ssize + (char *)cctx->sptr
639	);
640	#endif
641
642	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	894	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
643		895
644	return cctx;	896	return cctx;
645	}	897	}
646		898
647	static void	899	static void
…		…
650	if (!cctx)	902	if (!cctx)
651	return;	903	return;
652		904
653	--cctx_count;	905	--cctx_count;
654		906
655	#if USE_VALGRIND	907	#if CORO_USE_VALGRIND
656	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	908	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
657	#endif	909	#endif
658		910
659	#if HAVE_MMAP	911	#if HAVE_MMAP
		912	if (cctx->flags & CC_MAPPED)
660	munmap (cctx->sptr, cctx->ssize);	913	munmap (cctx->sptr, cctx->ssize);
661	#else	914	else
		915	#endif
662	Safefree (cctx->sptr);	916	Safefree (cctx->sptr);
663	#endif
664		917
665	Safefree (cctx);	918	Safefree (cctx);
666	}	919	}
667		920
668	static coro_cctx *	921	static coro_cctx *
669	cctx_get ()	922	cctx_get (pTHX)
670	{	923	{
671	coro_cctx *cctx;
672
673	if (cctx_first)	924	while (cctx_first)
674	{	925	{
675	cctx = cctx_first;	926	coro_cctx *cctx = cctx_first;
676	cctx_first = cctx->next;	927	cctx_first = cctx->next;
677	--cctx_idle;	928	--cctx_idle;
678	}	929
679	else	930	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
680	{	931	return cctx;
681	cctx = cctx_new ();	932
682	PL_op = PL_op->op_next;	933	cctx_destroy (cctx);
683	}	934	}
684		935
685	return cctx;	936	return cctx_new ();
686	}	937	}
687		938
688	static void	939	static void
689	cctx_put (coro_cctx *cctx)	940	cctx_put (coro_cctx *cctx)
690	{	941	{
…		…
693	{	944	{
694	coro_cctx *first = cctx_first;	945	coro_cctx *first = cctx_first;
695	cctx_first = first->next;	946	cctx_first = first->next;
696	--cctx_idle;	947	--cctx_idle;
697		948
698	assert (!first->inuse);
699	cctx_destroy (first);	949	cctx_destroy (first);
700	}	950	}
701		951
702	++cctx_idle;	952	++cctx_idle;
703	cctx->next = cctx_first;	953	cctx->next = cctx_first;
704	cctx_first = cctx;	954	cctx_first = cctx;
705	}	955	}
706		956
707	/* never call directly, always through the coro_state_transfer global variable */	957	/ coroutine switching ***************************************************/
		958
708	static void NOINLINE	959	static void NOINLINE
		960	transfer_check (pTHX_ struct coro prev, struct coro next)
		961	{
		962	if (prev != next)
		963	{
		964	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		965	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		966
		967	if (next->flags & CF_RUNNING)
		968	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		969
		970	if (next->flags & CF_DESTROYED)
		971	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		972
		973	if (PL_lex_state != LEX_NOTPARSING)
		974	croak ("Coro::State::transfer called while parsing, but this is not supported");
		975	}
		976	}
		977
		978	/* always use the TRANSFER macro */
		979	static void NOINLINE
709	transfer (struct coro prev, struct coro next)	980	transfer (pTHX_ struct coro prev, struct coro next)
710	{	981	{
711	dSTACKLEVEL;	982	dSTACKLEVEL;
712		983
713	/* sometimes transfer is only called to set idle_sp */	984	/* sometimes transfer is only called to set idle_sp */
714	if (!next)	985	if (!next)
715	{	986	{
716	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	987	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
717	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	988	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
718	}	989	}
719	else if (prev != next)	990	else if (prev != next)
720	{	991	{
721	coro_cctx *prev__cctx;	992	coro_cctx *prev__cctx;
722		993
723	if (prev->flags & CF_NEW)	994	if (prev->flags & CF_NEW)
724	{	995	{
725	/* create a new empty context */	996	/* create a new empty context */
726	Newz (0, prev->cctx, 1, coro_cctx);	997	Newz (0, prev->cctx, 1, coro_cctx);
727	prev->cctx->inuse = 1;
728	prev->flags &= ~CF_NEW;	998	prev->flags &= ~CF_NEW;
729	prev->flags \|= CF_RUNNING;	999	prev->flags \|= CF_RUNNING;
730	}	1000	}
731
732	/TODO: must not croak here /
733	if (!prev->flags & CF_RUNNING)
734	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
735
736	if (next->flags & CF_RUNNING)
737	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
738		1001
739	prev->flags &= ~CF_RUNNING;	1002	prev->flags &= ~CF_RUNNING;
740	next->flags \|= CF_RUNNING;	1003	next->flags \|= CF_RUNNING;
741		1004
742	LOCK;	1005	LOCK;
…		…
744	if (next->flags & CF_NEW)	1007	if (next->flags & CF_NEW)
745	{	1008	{
746	/* need to start coroutine */	1009	/* need to start coroutine */
747	next->flags &= ~CF_NEW;	1010	next->flags &= ~CF_NEW;
748	/* first get rid of the old state */	1011	/* first get rid of the old state */
749	save_perl (prev);	1012	save_perl (aTHX_ prev);
750	/* setup coroutine call */	1013	/* setup coroutine call */
751	setup_coro (next);	1014	setup_coro (aTHX_ next);
752	/* need a new stack */
753	assert (!next->cctx);
754	}	1015	}
755	else	1016	else
756	{	1017	{
757	/* coroutine already started */	1018	/* coroutine already started */
758	save_perl (prev);	1019	save_perl (aTHX_ prev);
759	load_perl (next);	1020	load_perl (aTHX_ next);
760	}	1021	}
761		1022
762	prev__cctx = prev->cctx;	1023	prev__cctx = prev->cctx;
763		1024
764	/* possibly "free" the cctx */	1025	/* possibly "free" the cctx */
765	if (prev__cctx->idle_sp == STACKLEVEL)	1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
766	{	1027	{
767	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1028	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
768	assert (PL_top_env == prev__cctx->top_env);	1029	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
769		1030
770	prev->cctx = 0;	1031	prev->cctx = 0;
771		1032
772	cctx_put (prev__cctx);	1033	cctx_put (prev__cctx);
773	prev__cctx->inuse = 0;
774	}	1034	}
775		1035
		1036	++next->usecount;
		1037
776	if (!next->cctx)	1038	if (!next->cctx)
777	{
778	next->cctx = cctx_get ();	1039	next->cctx = cctx_get (aTHX);
779	assert (!next->cctx->inuse);
780	next->cctx->inuse = 1;
781	}
782		1040
783	if (prev__cctx != next->cctx)	1041	if (prev__cctx != next->cctx)
784	{	1042	{
785	prev__cctx->top_env = PL_top_env;	1043	prev__cctx->top_env = PL_top_env;
786	PL_top_env = next->cctx->top_env;	1044	PL_top_env = next->cctx->top_env;
787	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
788	}	1046	}
789		1047
790	free_coro_mortal ();	1048	free_coro_mortal (aTHX);
791
792	UNLOCK;	1049	UNLOCK;
793	}	1050	}
794	}	1051	}
795		1052
796	struct transfer_args	1053	struct transfer_args
797	{	1054	{
798	struct coro prev, next;	1055	struct coro prev, next;
799	};	1056	};
800		1057
801	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1058	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1059	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
802		1060
		1061	/ high level stuff ******************************************************/
		1062
803	static void	1063	static int
804	coro_state_destroy (struct coro *coro)	1064	coro_state_destroy (pTHX_ struct coro *coro)
805	{	1065	{
806	if (coro->refcnt--)	1066	if (coro->flags & CF_DESTROYED)
807	return;	1067	return 0;
		1068
		1069	coro->flags \|= CF_DESTROYED;
		1070
		1071	if (coro->flags & CF_READY)
		1072	{
		1073	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1074	/* alternative: look through all ready queues and remove the coro */
		1075	LOCK;
		1076	--coro_nready;
		1077	UNLOCK;
		1078	}
		1079	else
		1080	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
808		1081
809	if (coro->mainstack && coro->mainstack != main_mainstack)	1082	if (coro->mainstack && coro->mainstack != main_mainstack)
810	{	1083	{
811	struct coro temp;	1084	struct coro temp;
		1085
		1086	assert (!(coro->flags & CF_RUNNING));
		1087
812	Zero (&temp, 1, struct coro);	1088	Zero (&temp, 1, struct coro);
813	temp.save = CORO_SAVE_ALL;	1089	temp.save = CORO_SAVE_ALL;
814		1090
815	if (coro->flags & CF_RUNNING)	1091	if (coro->flags & CF_RUNNING)
816	croak ("FATAL: tried to destroy currently running coroutine");	1092	croak ("FATAL: tried to destroy currently running coroutine");
817		1093
818	save_perl (&temp);	1094	save_perl (aTHX_ &temp);
819	load_perl (coro);	1095	load_perl (aTHX_ coro);
820		1096
821	coro_destroy_stacks ();	1097	coro_destroy_stacks (aTHX);
822		1098
823	load_perl (&temp); /* this will get rid of defsv etc.. */	1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
824		1100
825	coro->mainstack = 0;	1101	coro->mainstack = 0;
826	}	1102	}
827		1103
828	cctx_destroy (coro->cctx);	1104	cctx_destroy (coro->cctx);
829	SvREFCNT_dec (coro->args);	1105	SvREFCNT_dec (coro->args);
830	Safefree (coro);	1106
		1107	if (coro->next) coro->next->prev = coro->prev;
		1108	if (coro->prev) coro->prev->next = coro->next;
		1109	if (coro == coro_first) coro_first = coro->next;
		1110
		1111	return 1;
831	}	1112	}
832		1113
833	static int	1114	static int
834	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1115	coro_state_free (pTHX_ SV sv, MAGIC mg)
835	{	1116	{
836	struct coro coro = (struct coro )mg->mg_ptr;	1117	struct coro coro = (struct coro )mg->mg_ptr;
837	mg->mg_ptr = 0;	1118	mg->mg_ptr = 0;
838		1119
		1120	coro->hv = 0;
		1121
		1122	if (--coro->refcnt < 0)
		1123	{
839	coro_state_destroy (coro);	1124	coro_state_destroy (aTHX_ coro);
		1125	Safefree (coro);
		1126	}
840		1127
841	return 0;	1128	return 0;
842	}	1129	}
843		1130
844	static int	1131	static int
…		…
851	return 0;	1138	return 0;
852	}	1139	}
853		1140
854	static MGVTBL coro_state_vtbl = {	1141	static MGVTBL coro_state_vtbl = {
855	0, 0, 0, 0,	1142	0, 0, 0, 0,
856	coro_state_clear,	1143	coro_state_free,
857	0,	1144	0,
858	#ifdef MGf_DUP	1145	#ifdef MGf_DUP
859	coro_state_dup,	1146	coro_state_dup,
860	#else	1147	#else
861	# define MGf_DUP 0	1148	# define MGf_DUP 0
862	#endif	1149	#endif
863	};	1150	};
864		1151
865	static struct coro *
866	SvSTATE (SV *coro)
867	{
868	HV *stash;
869	MAGIC *mg;
870
871	if (SvROK (coro))
872	coro = SvRV (coro);
873
874	stash = SvSTASH (coro);
875	if (stash != coro_stash && stash != coro_state_stash)
876	{
877	/* very slow, but rare, check */
878	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
879	croak ("Coro::State object required");
880	}
881
882	mg = SvMAGIC (coro);
883	assert (mg->mg_type == PERL_MAGIC_ext);
884	return (struct coro *)mg->mg_ptr;
885	}
886
887	static void	1152	static void
888	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1153	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
889	{	1154	{
890	ta->prev = SvSTATE (prev_sv);	1155	ta->prev = SvSTATE (prev_sv);
891	ta->next = SvSTATE (next_sv);	1156	ta->next = SvSTATE (next_sv);
		1157	TRANSFER_CHECK (*ta);
892	}	1158	}
893		1159
894	static void	1160	static void
895	api_transfer (SV prev_sv, SV next_sv)	1161	api_transfer (SV prev_sv, SV next_sv)
896	{	1162	{
		1163	dTHX;
897	struct transfer_args ta;	1164	struct transfer_args ta;
898		1165
899	prepare_transfer (&ta, prev_sv, next_sv);	1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
900	TRANSFER (ta);	1167	TRANSFER (ta);
901	}	1168	}
902		1169
903	static int	1170	static int
904	api_save (SV *coro_sv, int new_save)	1171	api_save (SV *coro_sv, int new_save)
905	{	1172	{
		1173	dTHX;
906	struct coro *coro = SvSTATE (coro_sv);	1174	struct coro *coro = SvSTATE (coro_sv);
907	int old_save = coro->save;	1175	int old_save = coro->save;
908		1176
909	if (new_save >= 0)	1177	if (new_save >= 0)
910	coro->save = new_save;	1178	coro->save = new_save;
…		…
912	return old_save;	1180	return old_save;
913	}	1181	}
914		1182
915	/ Coro ******************************************************************/	1183	/ Coro ******************************************************************/
916		1184
917	#define PRIO_MAX 3
918	#define PRIO_HIGH 1
919	#define PRIO_NORMAL 0
920	#define PRIO_LOW -1
921	#define PRIO_IDLE -3
922	#define PRIO_MIN -4
923
924	/* for Coro.pm */
925	static SV *coro_current;
926	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
927	static int coro_nready;
928
929	static void	1185	static void
930	coro_enq (SV *coro_sv)	1186	coro_enq (pTHX_ SV *coro_sv)
931	{	1187	{
932	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
933	coro_nready++;
934	}	1189	}
935		1190
936	static SV *	1191	static SV *
937	coro_deq (int min_prio)	1192	coro_deq (pTHX_ int min_prio)
938	{	1193	{
939	int prio = PRIO_MAX - PRIO_MIN;	1194	int prio = PRIO_MAX - PRIO_MIN;
940		1195
941	min_prio -= PRIO_MIN;	1196	min_prio -= PRIO_MIN;
942	if (min_prio < 0)	1197	if (min_prio < 0)
943	min_prio = 0;	1198	min_prio = 0;
944		1199
945	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1200	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
946	if (AvFILLp (coro_ready [prio]) >= 0)	1201	if (AvFILLp (coro_ready [prio]) >= 0)
947	{
948	coro_nready--;
949	return av_shift (coro_ready [prio]);	1202	return av_shift (coro_ready [prio]);
950	}
951		1203
952	return 0;	1204	return 0;
953	}	1205	}
954		1206
955	static int	1207	static int
956	api_ready (SV *coro_sv)	1208	api_ready (SV *coro_sv)
957	{	1209	{
		1210	dTHX;
958	struct coro *coro;	1211	struct coro *coro;
959		1212
960	if (SvROK (coro_sv))	1213	if (SvROK (coro_sv))
961	coro_sv = SvRV (coro_sv);	1214	coro_sv = SvRV (coro_sv);
962		1215
963	coro = SvSTATE (coro_sv);	1216	coro = SvSTATE (coro_sv);
964		1217
965	if (coro->flags & CF_READY)	1218	if (coro->flags & CF_READY)
966	return 0;	1219	return 0;
967		1220
968	#if 0 /* this is actually harmless */
969	if (coro->flags & CF_RUNNING)
970	croak ("Coro::ready called on currently running coroutine");
971	#endif
972
973	coro->flags \|= CF_READY;	1221	coro->flags \|= CF_READY;
974		1222
975	LOCK;	1223	LOCK;
976	coro_enq (SvREFCNT_inc (coro_sv));	1224	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1225	++coro_nready;
977	UNLOCK;	1226	UNLOCK;
978		1227
979	return 1;	1228	return 1;
980	}	1229	}
981		1230
982	static int	1231	static int
983	api_is_ready (SV *coro_sv)	1232	api_is_ready (SV *coro_sv)
984	{	1233	{
		1234	dTHX;
985	return !!SvSTATE (coro_sv)->flags & CF_READY;	1235	return !!(SvSTATE (coro_sv)->flags & CF_READY);
986	}	1236	}
987		1237
988	static void	1238	static void
989	prepare_schedule (struct transfer_args *ta)	1239	prepare_schedule (pTHX_ struct transfer_args *ta)
990	{	1240	{
991	SV prev, next;	1241	SV prev_sv, next_sv;
992		1242
993	for (;;)	1243	for (;;)
994	{	1244	{
995	LOCK;	1245	LOCK;
996	next = coro_deq (PRIO_MIN);	1246	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1247
		1248	/* nothing to schedule: call the idle handler */
		1249	if (!next_sv)
		1250	{
		1251	dSP;
		1252	UNLOCK;
		1253
		1254	ENTER;
		1255	SAVETMPS;
		1256
		1257	PUSHMARK (SP);
		1258	PUTBACK;
		1259	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1260
		1261	FREETMPS;
		1262	LEAVE;
		1263	continue;
		1264	}
		1265
		1266	ta->next = SvSTATE (next_sv);
		1267
		1268	/* cannot transfer to destroyed coros, skip and look for next */
		1269	if (ta->next->flags & CF_DESTROYED)
		1270	{
		1271	UNLOCK;
		1272	SvREFCNT_dec (next_sv);
		1273	/* coro_nready is already taken care of by destroy */
		1274	continue;
		1275	}
		1276
		1277	--coro_nready;
997	UNLOCK;	1278	UNLOCK;
998
999	if (next)
1000	break;	1279	break;
1001
1002	{
1003	dSP;
1004
1005	ENTER;
1006	SAVETMPS;
1007
1008	PUSHMARK (SP);
1009	PUTBACK;
1010	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1011
1012	FREETMPS;
1013	LEAVE;
1014	}	1280	}
1015	}
1016
1017	prev = SvRV (coro_current);
1018	SvRV_set (coro_current, next);
1019		1281
1020	/* free this only after the transfer */	1282	/* free this only after the transfer */
1021	LOCK;	1283	prev_sv = SvRV (coro_current);
1022	free_coro_mortal ();
1023	UNLOCK;
1024	coro_mortal = prev;
1025
1026	assert (!SvROK(prev));//D
1027	assert (!SvROK(next));//D
1028
1029	ta->prev = SvSTATE (prev);	1284	ta->prev = SvSTATE (prev_sv);
1030	ta->next = SvSTATE (next);	1285	TRANSFER_CHECK (*ta);
1031
1032	assert (ta->next->flags & CF_READY);	1286	assert (ta->next->flags & CF_READY);
1033	ta->next->flags &= ~CF_READY;	1287	ta->next->flags &= ~CF_READY;
		1288	SvRV_set (coro_current, next_sv);
		1289
		1290	LOCK;
		1291	free_coro_mortal (aTHX);
		1292	coro_mortal = prev_sv;
		1293	UNLOCK;
1034	}	1294	}
1035		1295
1036	static void	1296	static void
1037	prepare_cede (struct transfer_args *ta)	1297	prepare_cede (pTHX_ struct transfer_args *ta)
1038	{	1298	{
1039	api_ready (coro_current);	1299	api_ready (coro_current);
1040
1041	prepare_schedule (ta);	1300	prepare_schedule (aTHX_ ta);
		1301	}
		1302
		1303	static int
		1304	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1305	{
		1306	if (coro_nready)
		1307	{
		1308	SV *prev = SvRV (coro_current);
		1309	prepare_schedule (aTHX_ ta);
		1310	api_ready (prev);
		1311	return 1;
		1312	}
		1313	else
		1314	return 0;
1042	}	1315	}
1043		1316
1044	static void	1317	static void
1045	api_schedule (void)	1318	api_schedule (void)
1046	{	1319	{
		1320	dTHX;
1047	struct transfer_args ta;	1321	struct transfer_args ta;
1048		1322
1049	prepare_schedule (&ta);	1323	prepare_schedule (aTHX_ &ta);
1050	TRANSFER (ta);	1324	TRANSFER (ta);
1051	}	1325	}
1052		1326
		1327	static int
		1328	api_cede (void)
		1329	{
		1330	dTHX;
		1331	struct transfer_args ta;
		1332
		1333	prepare_cede (aTHX_ &ta);
		1334
		1335	if (ta.prev != ta.next)
		1336	{
		1337	TRANSFER (ta);
		1338	return 1;
		1339	}
		1340	else
		1341	return 0;
		1342	}
		1343
		1344	static int
		1345	api_cede_notself (void)
		1346	{
		1347	dTHX;
		1348	struct transfer_args ta;
		1349
		1350	if (prepare_cede_notself (aTHX_ &ta))
		1351	{
		1352	TRANSFER (ta);
		1353	return 1;
		1354	}
		1355	else
		1356	return 0;
		1357	}
		1358
1053	static void	1359	static void
1054	api_cede (void)	1360	api_trace (SV *coro_sv, int flags)
1055	{	1361	{
1056	struct transfer_args ta;	1362	dTHX;
		1363	struct coro *coro = SvSTATE (coro_sv);
1057		1364
1058	prepare_cede (&ta);	1365	if (flags & CC_TRACE)
1059	TRANSFER (ta);	1366	{
1060	}	1367	if (!coro->cctx)
		1368	coro->cctx = cctx_new ();
		1369	else if (!(coro->cctx->flags & CC_TRACE))
		1370	croak ("cannot enable tracing on coroutine with custom stack");
1061		1371
		1372	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1373	}
		1374	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1375	{
		1376	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1377
		1378	if (coro->flags & CF_RUNNING)
		1379	PL_runops = RUNOPS_DEFAULT;
		1380	else
		1381	coro->runops = RUNOPS_DEFAULT;
		1382	}
		1383	}
		1384
1062	MODULE = Coro::State PACKAGE = Coro::State	1385	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1063		1386
1064	PROTOTYPES: DISABLE	1387	PROTOTYPES: DISABLE
1065		1388
1066	BOOT:	1389	BOOT:
1067	{	1390	{
…		…
1069	MUTEX_INIT (&coro_mutex);	1392	MUTEX_INIT (&coro_mutex);
1070	#endif	1393	#endif
1071	BOOT_PAGESIZE;	1394	BOOT_PAGESIZE;
1072		1395
1073	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1397
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1074		1402
1075	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1403	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1076	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1404	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1077	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1405	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1078	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1406	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1407	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1408	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1079	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1409	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1080		1410
1081	main_mainstack = PL_mainstack;	1411	main_mainstack = PL_mainstack;
		1412	main_top_env = PL_top_env;
		1413
		1414	while (main_top_env->je_prev)
		1415	main_top_env = main_top_env->je_prev;
1082		1416
1083	coroapi.ver = CORO_API_VERSION;	1417	coroapi.ver = CORO_API_VERSION;
1084	coroapi.transfer = api_transfer;	1418	coroapi.transfer = api_transfer;
1085		1419
1086	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1420	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1094	HV *hv;	1428	HV *hv;
1095	int i;	1429	int i;
1096		1430
1097	Newz (0, coro, 1, struct coro);	1431	Newz (0, coro, 1, struct coro);
1098	coro->args = newAV ();	1432	coro->args = newAV ();
1099	coro->save = CORO_SAVE_ALL;	1433	coro->save = CORO_SAVE_DEF;
1100	coro->flags = CF_NEW;	1434	coro->flags = CF_NEW;
1101		1435
		1436	if (coro_first) coro_first->prev = coro;
		1437	coro->next = coro_first;
		1438	coro_first = coro;
		1439
1102	hv = newHV ();	1440	coro->hv = hv = newHV ();
1103	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1441	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1104	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1442	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1105		1443
1106	for (i = 1; i < items; i++)	1444	for (i = 1; i < items; i++)
1107	av_push (coro->args, newSVsv (ST (i)));	1445	av_push (coro->args, newSVsv (ST (i)));
…		…
1114	CODE:	1452	CODE:
1115	RETVAL = api_save (coro, new_save);	1453	RETVAL = api_save (coro, new_save);
1116	OUTPUT:	1454	OUTPUT:
1117	RETVAL	1455	RETVAL
1118		1456
		1457	int
		1458	save_also (SV *coro_sv, int save_also)
		1459	CODE:
		1460	{
		1461	struct coro *coro = SvSTATE (coro_sv);
		1462	RETVAL = coro->save;
		1463	coro->save \|= save_also;
		1464	}
		1465	OUTPUT:
		1466	RETVAL
		1467
1119	void	1468	void
1120	_set_stacklevel (...)	1469	_set_stacklevel (...)
1121	ALIAS:	1470	ALIAS:
1122	Coro::State::transfer = 1	1471	Coro::State::transfer = 1
1123	Coro::schedule = 2	1472	Coro::schedule = 2
1124	Coro::cede = 3	1473	Coro::cede = 3
		1474	Coro::cede_notself = 4
1125	CODE:	1475	CODE:
1126	{	1476	{
1127	struct transfer_args ta;	1477	struct transfer_args ta;
1128		1478
1129	switch (ix)	1479	switch (ix)
…		…
1135		1485
1136	case 1:	1486	case 1:
1137	if (items != 2)	1487	if (items != 2)
1138	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1488	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1139		1489
1140	prepare_transfer (&ta, ST (0), ST (1));	1490	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1141	break;	1491	break;
1142		1492
1143	case 2:	1493	case 2:
1144	prepare_schedule (&ta);	1494	prepare_schedule (aTHX_ &ta);
1145	break;	1495	break;
1146		1496
1147	case 3:	1497	case 3:
1148	prepare_cede (&ta);	1498	prepare_cede (aTHX_ &ta);
		1499	break;
		1500
		1501	case 4:
		1502	if (!prepare_cede_notself (aTHX_ &ta))
		1503	XSRETURN_EMPTY;
		1504
1149	break;	1505	break;
1150	}	1506	}
1151		1507
		1508	BARRIER;
1152	TRANSFER (ta);	1509	TRANSFER (ta);
1153	}
1154		1510
1155	void	1511	if (GIMME_V != G_VOID && ta.next != ta.prev)
1156	_clone_state_from (SV dst, SV src)	1512	XSRETURN_YES;
		1513	}
		1514
		1515	bool
		1516	_destroy (SV *coro_sv)
1157	CODE:	1517	CODE:
1158	{	1518	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1159	struct coro *coro_src = SvSTATE (src);	1519	OUTPUT:
1160		1520	RETVAL
1161	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1162
1163	++coro_src->refcnt;
1164	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1165	}
1166		1521
1167	void	1522	void
1168	_exit (code)	1523	_exit (code)
1169	int code	1524	int code
1170	PROTOTYPE: $	1525	PROTOTYPE: $
1171	CODE:	1526	CODE:
1172	_exit (code);	1527	_exit (code);
1173		1528
1174	int	1529	int
		1530	cctx_stacksize (int new_stacksize = 0)
		1531	CODE:
		1532	RETVAL = coro_stacksize;
		1533	if (new_stacksize)
		1534	coro_stacksize = new_stacksize;
		1535	OUTPUT:
		1536	RETVAL
		1537
		1538	int
1175	cctx_count ()	1539	cctx_count ()
1176	CODE:	1540	CODE:
1177	RETVAL = cctx_count;	1541	RETVAL = cctx_count;
1178	OUTPUT:	1542	OUTPUT:
1179	RETVAL	1543	RETVAL
…		…
1183	CODE:	1547	CODE:
1184	RETVAL = cctx_idle;	1548	RETVAL = cctx_idle;
1185	OUTPUT:	1549	OUTPUT:
1186	RETVAL	1550	RETVAL
1187		1551
		1552	void
		1553	list ()
		1554	PPCODE:
		1555	{
		1556	struct coro *coro;
		1557	for (coro = coro_first; coro; coro = coro->next)
		1558	if (coro->hv)
		1559	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1560	}
		1561
		1562	void
		1563	call (Coro::State coro, SV *coderef)
		1564	ALIAS:
		1565	eval = 1
		1566	CODE:
		1567	{
		1568	if (coro->mainstack)
		1569	{
		1570	struct coro temp;
		1571	Zero (&temp, 1, struct coro);
		1572	temp.save = CORO_SAVE_ALL;
		1573
		1574	if (!(coro->flags & CF_RUNNING))
		1575	{
		1576	save_perl (aTHX_ &temp);
		1577	load_perl (aTHX_ coro);
		1578	}
		1579
		1580	{
		1581	dSP;
		1582	ENTER;
		1583	SAVETMPS;
		1584	PUSHMARK (SP);
		1585	PUTBACK;
		1586	if (ix)
		1587	eval_sv (coderef, 0);
		1588	else
		1589	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1590	SPAGAIN;
		1591	FREETMPS;
		1592	LEAVE;
		1593	PUTBACK;
		1594	}
		1595
		1596	if (!(coro->flags & CF_RUNNING))
		1597	{
		1598	save_perl (aTHX_ coro);
		1599	load_perl (aTHX_ &temp);
		1600	}
		1601	}
		1602	}
		1603
		1604	SV *
		1605	is_ready (Coro::State coro)
		1606	PROTOTYPE: $
		1607	ALIAS:
		1608	is_ready = CF_READY
		1609	is_running = CF_RUNNING
		1610	is_new = CF_NEW
		1611	is_destroyed = CF_DESTROYED
		1612	CODE:
		1613	RETVAL = boolSV (coro->flags & ix);
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617	void
		1618	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1619
		1620	SV *
		1621	has_stack (Coro::State coro)
		1622	PROTOTYPE: $
		1623	CODE:
		1624	RETVAL = boolSV (!!coro->cctx);
		1625	OUTPUT:
		1626	RETVAL
		1627
		1628	int
		1629	is_traced (Coro::State coro)
		1630	PROTOTYPE: $
		1631	CODE:
		1632	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1633	OUTPUT:
		1634	RETVAL
		1635
		1636	IV
		1637	rss (Coro::State coro)
		1638	PROTOTYPE: $
		1639	ALIAS:
		1640	usecount = 1
		1641	CODE:
		1642	switch (ix)
		1643	{
		1644	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1645	case 1: RETVAL = coro->usecount; break;
		1646	}
		1647	OUTPUT:
		1648	RETVAL
		1649
		1650
1188	MODULE = Coro::State PACKAGE = Coro	1651	MODULE = Coro::State PACKAGE = Coro
1189		1652
1190	BOOT:	1653	BOOT:
1191	{	1654	{
1192	int i;	1655	int i;
		1656
		1657	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1658	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1659	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1660
		1661	coro_current = get_sv ("Coro::current", FALSE);
		1662	SvREADONLY_on (coro_current);
1193		1663
1194	coro_stash = gv_stashpv ("Coro", TRUE);	1664	coro_stash = gv_stashpv ("Coro", TRUE);
1195		1665
1196	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1666	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1197	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1667	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1198	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1668	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1199	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1669	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1200	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1670	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1201	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1671	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1202		1672
1203	coro_current = get_sv ("Coro::current", FALSE);
1204	SvREADONLY_on (coro_current);
1205
1206	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1673	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1207	coro_ready[i] = newAV ();	1674	coro_ready[i] = newAV ();
1208		1675
1209	{	1676	{
1210	SV *sv = perl_get_sv("Coro::API", 1);	1677	SV *sv = perl_get_sv("Coro::API", 1);
1211		1678
1212	coroapi.schedule = api_schedule;	1679	coroapi.schedule = api_schedule;
1213	coroapi.save = api_save;	1680	coroapi.save = api_save;
1214	coroapi.cede = api_cede;	1681	coroapi.cede = api_cede;
		1682	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1683	coroapi.ready = api_ready;
1216	coroapi.is_ready = api_is_ready;	1684	coroapi.is_ready = api_is_ready;
1217	coroapi.nready = &coro_nready;	1685	coroapi.nready = &coro_nready;
1218	coroapi.current = coro_current;	1686	coroapi.current = coro_current;
1219		1687
1220	GCoroAPI = &coroapi;	1688	GCoroAPI = &coroapi;
1221	sv_setiv (sv, (IV)&coroapi);	1689	sv_setiv (sv, (IV)&coroapi);
1222	SvREADONLY_on (sv);	1690	SvREADONLY_on (sv);
1223	}	1691	}
…		…
1239	RETVAL = coro->prio;	1707	RETVAL = coro->prio;
1240		1708
1241	if (items > 1)	1709	if (items > 1)
1242	{	1710	{
1243	if (ix)	1711	if (ix)
1244	newprio += coro->prio;	1712	newprio = coro->prio - newprio;
1245		1713
1246	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1714	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1247	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1715	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1248		1716
1249	coro->prio = newprio;	1717	coro->prio = newprio;
1250	}	1718	}
1251	}	1719	}
		1720	OUTPUT:
		1721	RETVAL
1252		1722
1253	SV *	1723	SV *
1254	ready (SV *self)	1724	ready (SV *self)
1255	PROTOTYPE: $	1725	PROTOTYPE: $
1256	CODE:	1726	CODE:
1257	RETVAL = boolSV (api_ready (self));	1727	RETVAL = boolSV (api_ready (self));
1258	OUTPUT:	1728	OUTPUT:
1259	RETVAL	1729	RETVAL
1260		1730
1261	SV *
1262	is_ready (SV *self)
1263	PROTOTYPE: $
1264	CODE:
1265	RETVAL = boolSV (api_is_ready (self));
1266	OUTPUT:
1267	RETVAL
1268
1269	int	1731	int
1270	nready (...)	1732	nready (...)
1271	PROTOTYPE:	1733	PROTOTYPE:
1272	CODE:	1734	CODE:
1273	RETVAL = coro_nready;	1735	RETVAL = coro_nready;
1274	OUTPUT:	1736	OUTPUT:
1275	RETVAL	1737	RETVAL
1276		1738
		1739	# for async_pool speedup
		1740	void
		1741	_pool_1 (SV *cb)
		1742	CODE:
		1743	{
		1744	int i, len;
		1745	HV hv = (HV )SvRV (coro_current);
		1746	AV *defav = GvAV (PL_defgv);
		1747	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1748	AV *invoke_av;
		1749
		1750	if (!invoke)
		1751	croak ("\3terminate\2\n");
		1752
		1753	hv_store (hv, "desc", sizeof ("desc") - 1,
		1754	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1755
		1756	invoke_av = (AV *)SvRV (invoke);
		1757	len = av_len (invoke_av);
		1758
		1759	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1760
		1761	if (len > 0)
		1762	{
		1763	av_fill (defav, len - 1);
		1764	for (i = 0; i < len; ++i)
		1765	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1766	}
		1767
		1768	SvREFCNT_dec (invoke);
		1769	}
		1770
		1771	void
		1772	_pool_2 (SV *cb)
		1773	CODE:
		1774	{
		1775	struct coro *coro = SvSTATE (coro_current);
		1776
		1777	sv_setsv (cb, &PL_sv_undef);
		1778
		1779	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1780	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1781	croak ("\3terminate\2\n");
		1782
		1783	av_clear (GvAV (PL_defgv));
		1784	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1785	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1786
		1787	coro->save = CORO_SAVE_DEF;
		1788	coro->prio = 0;
		1789
		1790	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1791	api_trace (coro_current, 0);
		1792
		1793	av_push (av_async_pool, newSVsv (coro_current));
		1794	}
		1795
		1796
1277	MODULE = Coro::State PACKAGE = Coro::AIO	1797	MODULE = Coro::State PACKAGE = Coro::AIO
1278		1798
1279	SV *	1799	SV *
1280	_get_state ()	1800	_get_state ()
1281	CODE:	1801	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC vs. Revision 1.175 by root, Sun Sep 30 13:43:45 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC vs.
Revision 1.175 by root, Sun Sep 30 13:43:45 2007 UTC