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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC vs.
Revision 1.167 by root, Thu Sep 27 15:52:31 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45		13	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		14
54	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
55	# include <unistd.h>	16	# include <unistd.h>
56	# include <sys/mman.h>	17	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
72	#else	33	#else
73	# define PAGESIZE 0	34	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
75	#endif	36	#endif
76		37
77	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
79	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
80	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
82		97
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		99
85	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	103	#else
88	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
89	#endif	106	#endif
90		107
91	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
92		109
93	#include "CoroAPI.h"	110	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		111
97	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	116	#else
102	# define LOCK (void)0	117	# define LOCK (void)0
103	# define UNLOCK (void)0	118	# define UNLOCK (void)0
104	#endif	119	#endif
105		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
106	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
108	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
110		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
111	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
112	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		152	};
113		153
114	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
115	typedef struct coro_cctx {	155	typedef struct coro_cctx {
116	struct coro_cctx *next;	156	struct coro_cctx *next;
117		157
118	/* the stack */	158	/* the stack */
119	void *sptr;	159	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
121		161
122	/* cpu state */	162	/* cpu state */
123	void idle_sp; / sp of top-level transfer/schedule/cede call */	163	void idle_sp; / sp of top-level transfer/schedule/cede call */
		164	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
124	JMPENV *top_env;	165	JMPENV *top_env;
125	coro_context cctx;	166	coro_context cctx;
126		167
127	int inuse;
128
129	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
130	int valgrind_id;	169	int valgrind_id;
131	#endif	170	#endif
		171	unsigned char flags;
132	} coro_cctx;	172	} coro_cctx;
133		173
134	enum {	174	enum {
135	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
137	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 */
138	};	179	};
139		180
140	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
141	struct coro {	182	struct coro {
142	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
143	coro_cctx *cctx;	184	coro_cctx *cctx;
144		185
145	/* data associated with this coroutine (initial args) */	186	/* data associated with this coroutine (initial args) */
146	AV *args;	187	AV *args;
147	int refcnt;	188	int refcnt;
148	int flags;	189	int save; /* CORO_SAVE flags */
		190	int flags; /* CF_ flags */
149		191
150	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
151	AV *defav;	193	AV defav; / @_ */
152	SV *defsv;	194	SV defsv; / $_ */
153	SV *errsv;	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
		197	SV irssv; / $/ */
		198	SV irssv_sv; / real $/ cache */
154		199
155	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
156	# include "state.h"	201	# include "state.h"
157	#undef VAR	202	#undef VAR
158		203
159	/* coro process data */	204	/* coro process data */
160	int prio;	205	int prio;
		206
		207	/* linked list */
		208	struct coro next, prev;
		209	HV hv; / the perl hash associated with this coro, if any */
161	};	210	};
162		211
163	typedef struct coro *Coro__State;	212	typedef struct coro *Coro__State;
164	typedef struct coro *Coro__State_or_hashref;	213	typedef struct coro *Coro__State_or_hashref;
165		214
		215	/ Coro ******************************************************************/
		216
		217	#define PRIO_MAX 3
		218	#define PRIO_HIGH 1
		219	#define PRIO_NORMAL 0
		220	#define PRIO_LOW -1
		221	#define PRIO_IDLE -3
		222	#define PRIO_MIN -4
		223
		224	/* for Coro.pm */
		225	static SV *coro_current;
		226	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		227	static int coro_nready;
		228	static struct coro *coro_first;
		229
		230	/ lowlevel stuff ********************************************************/
		231
166	static AV *	232	static AV *
167	coro_clone_padlist (CV *cv)	233	coro_clone_padlist (pTHX_ CV *cv)
168	{	234	{
169	AV *padlist = CvPADLIST (cv);	235	AV *padlist = CvPADLIST (cv);
170	AV newpadlist, newpad;	236	AV newpadlist, newpad;
171		237
172	newpadlist = newAV ();	238	newpadlist = newAV ();
…		…
184		250
185	return newpadlist;	251	return newpadlist;
186	}	252	}
187		253
188	static void	254	static void
189	free_padlist (AV *padlist)	255	free_padlist (pTHX_ AV *padlist)
190	{	256	{
191	/* may be during global destruction */	257	/* may be during global destruction */
192	if (SvREFCNT (padlist))	258	if (SvREFCNT (padlist))
193	{	259	{
194	I32 i = AvFILLp (padlist);	260	I32 i = AvFILLp (padlist);
…		…
215	AV *padlist;	281	AV *padlist;
216	AV av = (AV )mg->mg_obj;	282	AV av = (AV )mg->mg_obj;
217		283
218	/* casting is fun. */	284	/* casting is fun. */
219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	285	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
220	free_padlist (padlist);	286	free_padlist (aTHX_ padlist);
221		287
222	SvREFCNT_dec (av);	288	SvREFCNT_dec (av);
223		289
224	return 0;	290	return 0;
225	}	291	}
…		…
235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
236	: 0	302	: 0
237		303
238	/* the next two functions merely cache the padlists */	304	/* the next two functions merely cache the padlists */
239	static void	305	static void
240	get_padlist (CV *cv)	306	get_padlist (pTHX_ CV *cv)
241	{	307	{
242	MAGIC *mg = CORO_MAGIC (cv);	308	MAGIC *mg = CORO_MAGIC (cv);
243	AV *av;	309	AV *av;
244		310
245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	311	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	312	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247	else	313	else
248	{	314	{
249	#if 0	315	#if CORO_PREFER_PERL_FUNCTIONS
250	/* this is probably cleaner, but also slower? */	316	/* this is probably cleaner, but also slower? */
251	CV *cp = Perl_cv_clone (cv);	317	CV *cp = Perl_cv_clone (cv);
252	CvPADLIST (cv) = CvPADLIST (cp);	318	CvPADLIST (cv) = CvPADLIST (cp);
253	CvPADLIST (cp) = 0;	319	CvPADLIST (cp) = 0;
254	SvREFCNT_dec (cp);	320	SvREFCNT_dec (cp);
255	#else	321	#else
256	CvPADLIST (cv) = coro_clone_padlist (cv);	322	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
257	#endif	323	#endif
258	}	324	}
259	}	325	}
260		326
261	static void	327	static void
262	put_padlist (CV *cv)	328	put_padlist (pTHX_ CV *cv)
263	{	329	{
264	MAGIC *mg = CORO_MAGIC (cv);	330	MAGIC *mg = CORO_MAGIC (cv);
265	AV *av;	331	AV *av;
266		332
267	if (!mg)	333	if (!mg)
…		…
278	av_extend (av, AvMAX (av) + 1);	344	av_extend (av, AvMAX (av) + 1);
279		345
280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	346	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
281	}	347	}
282		348
		349	/ load & save, init *****************************************************/
		350
283	#define SB do {	351	#define SB do {
284	#define SE } while (0)	352	#define SE } while (0)
285		353
286	#define LOAD(state) load_state ((state))
287	#define SAVE(state,flags) save_state ((state),(flags))
288
289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	354	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
290		355
291	static void	356	static void
292	load_state (Coro__State c)	357	load_perl (pTHX_ Coro__State c)
293	{	358	{
294	#define VAR(name,type) PL_ ## name = c->name;	359	#define VAR(name,type) PL_ ## name = c->name;
295	# include "state.h"	360	# include "state.h"
296	#undef VAR	361	#undef VAR
297		362
298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	363	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	364	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	365	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		366	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		367
		368	if (c->irssv)
		369	{
		370	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		371	{
		372	SvREFCNT_dec (c->irssv);
		373	c->irssv = 0;
		374	}
		375	else
		376	{
		377	REPLACE_SV (PL_rs, c->irssv);
		378	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		379	sv_setsv (c->irssv_sv, PL_rs);
		380	}
		381	}
301		382
302	{	383	{
303	dSP;	384	dSP;
304	CV *cv;	385	CV *cv;
305		386
306	/* now do the ugly restore mess */	387	/* now do the ugly restore mess */
307	while ((cv = (CV *)POPs))	388	while ((cv = (CV *)POPs))
308	{	389	{
309	put_padlist (cv); /* mark this padlist as available */	390	put_padlist (aTHX_ cv); /* mark this padlist as available */
310	CvDEPTH (cv) = PTR2IV (POPs);	391	CvDEPTH (cv) = PTR2IV (POPs);
311	CvPADLIST (cv) = (AV *)POPs;	392	CvPADLIST (cv) = (AV *)POPs;
312	}	393	}
313		394
314	PUTBACK;	395	PUTBACK;
315	}	396	}
316	}	397	}
317		398
318	static void	399	static void
319	save_state (Coro__State c, int flags)	400	save_perl (pTHX_ Coro__State c)
320	{	401	{
321	{	402	{
322	dSP;	403	dSP;
323	I32 cxix = cxstack_ix;	404	I32 cxix = cxstack_ix;
324	PERL_CONTEXT *ccstk = cxstack;	405	PERL_CONTEXT *ccstk = cxstack;
…		…
327	/*	408	/*
328	* the worst thing you can imagine happens first - we have to save	409	* the worst thing you can imagine happens first - we have to save
329	* (and reinitialize) all cv's in the whole callchain :(	410	* (and reinitialize) all cv's in the whole callchain :(
330	*/	411	*/
331		412
332	PUSHs (Nullsv);	413	XPUSHs (Nullsv);
333	/* this loop was inspired by pp_caller */	414	/* this loop was inspired by pp_caller */
334	for (;;)	415	for (;;)
335	{	416	{
336	while (cxix >= 0)	417	while (cxix >= 0)
337	{	418	{
338	PERL_CONTEXT *cx = &ccstk[cxix--];	419	PERL_CONTEXT *cx = &ccstk[cxix--];
339		420
340	if (CxTYPE (cx) == CXt_SUB)	421	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
341	{	422	{
342	CV *cv = cx->blk_sub.cv;	423	CV *cv = cx->blk_sub.cv;
343		424
344	if (CvDEPTH (cv))	425	if (CvDEPTH (cv))
345	{	426	{
346	EXTEND (SP, 3);	427	EXTEND (SP, 3);
347
348	PUSHs ((SV *)CvPADLIST (cv));	428	PUSHs ((SV *)CvPADLIST (cv));
349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	429	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
350	PUSHs ((SV *)cv);	430	PUSHs ((SV *)cv);
351		431
352	CvDEPTH (cv) = 0;	432	CvDEPTH (cv) = 0;
353	get_padlist (cv);	433	get_padlist (aTHX_ cv);
354	}	434	}
355	}	435	}
356	#ifdef CXt_FORMAT
357	else if (CxTYPE (cx) == CXt_FORMAT)
358	{
359	/* I never used formats, so how should I know how these are implemented? */
360	/* my bold guess is as a simple, plain sub... */
361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
362	}
363	#endif
364	}	436	}
365		437
366	if (top_si->si_type == PERLSI_MAIN)	438	if (top_si->si_type == PERLSI_MAIN)
367	break;	439	break;
368		440
369	top_si = top_si->si_prev;	441	top_si = top_si->si_prev;
370	ccstk = top_si->si_cxstack;	442	ccstk = top_si->si_cxstack;
371	cxix = top_si->si_cxix;	443	cxix = top_si->si_cxix;
372	}	444	}
373		445
374	PUTBACK;	446	PUTBACK;
375	}	447	}
376		448
377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	449	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	450	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	451	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		452	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		453	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
380		454
381	#define VAR(name,type)c->name = PL_ ## name;	455	#define VAR(name,type)c->name = PL_ ## name;
382	# include "state.h"	456	# include "state.h"
383	#undef VAR	457	#undef VAR
384	}	458	}
…		…
387	* allocate various perl stacks. This is an exact copy	461	* allocate various perl stacks. This is an exact copy
388	* of perl.c:init_stacks, except that it uses less memory	462	* of perl.c:init_stacks, except that it uses less memory
389	* on the (sometimes correct) assumption that coroutines do	463	* on the (sometimes correct) assumption that coroutines do
390	* not usually need a lot of stackspace.	464	* not usually need a lot of stackspace.
391	*/	465	*/
		466	#if CORO_PREFER_PERL_FUNCTIONS
		467	# define coro_init_stacks init_stacks
		468	#else
392	static void	469	static void
393	coro_init_stacks ()	470	coro_init_stacks (pTHX)
394	{	471	{
395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	472	PL_curstackinfo = new_stackinfo(64, 6);
396	PL_curstackinfo->si_type = PERLSI_MAIN;	473	PL_curstackinfo->si_type = PERLSI_MAIN;
397	PL_curstack = PL_curstackinfo->si_stack;	474	PL_curstack = PL_curstackinfo->si_stack;
398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	475	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
399		476
400	PL_stack_base = AvARRAY(PL_curstack);	477	PL_stack_base = AvARRAY(PL_curstack);
401	PL_stack_sp = PL_stack_base;	478	PL_stack_sp = PL_stack_base;
402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	479	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
403		480
404	New(50,PL_tmps_stack,128,SV*);	481	New(50,PL_tmps_stack,64,SV*);
405	PL_tmps_floor = -1;	482	PL_tmps_floor = -1;
406	PL_tmps_ix = -1;	483	PL_tmps_ix = -1;
407	PL_tmps_max = 128;	484	PL_tmps_max = 64;
408		485
409	New(54,PL_markstack,32,I32);	486	New(54,PL_markstack,16,I32);
410	PL_markstack_ptr = PL_markstack;	487	PL_markstack_ptr = PL_markstack;
411	PL_markstack_max = PL_markstack + 32;	488	PL_markstack_max = PL_markstack + 16;
412		489
413	#ifdef SET_MARK_OFFSET	490	#ifdef SET_MARK_OFFSET
414	SET_MARK_OFFSET;	491	SET_MARK_OFFSET;
415	#endif	492	#endif
416		493
417	New(54,PL_scopestack,32,I32);	494	New(54,PL_scopestack,16,I32);
418	PL_scopestack_ix = 0;	495	PL_scopestack_ix = 0;
419	PL_scopestack_max = 32;	496	PL_scopestack_max = 16;
420		497
421	New(54,PL_savestack,64,ANY);	498	New(54,PL_savestack,64,ANY);
422	PL_savestack_ix = 0;	499	PL_savestack_ix = 0;
423	PL_savestack_max = 64;	500	PL_savestack_max = 64;
424		501
425	#if !PERL_VERSION_ATLEAST (5,9,0)	502	#if !PERL_VERSION_ATLEAST (5,9,0)
426	New(54,PL_retstack,16,OP*);	503	New(54,PL_retstack,4,OP*);
427	PL_retstack_ix = 0;	504	PL_retstack_ix = 0;
428	PL_retstack_max = 16;	505	PL_retstack_max = 4;
429	#endif	506	#endif
430	}	507	}
		508	#endif
431		509
432	/*	510	/*
433	* destroy the stacks, the callchain etc...	511	* destroy the stacks, the callchain etc...
434	*/	512	*/
435	static void	513	static void
436	coro_destroy_stacks ()	514	coro_destroy_stacks (pTHX)
437	{	515	{
438	if (!IN_DESTRUCT)	516	if (!IN_DESTRUCT)
439	{	517	{
440	/* is this ugly, I ask? */	518	/* restore all saved variables and stuff */
441	LEAVE_SCOPE (0);	519	LEAVE_SCOPE (0);
		520	assert (PL_tmps_floor == -1);
442		521
443	/* sure it is, but more important: is it correct?? :/ */	522	/* free all temporaries */
444	FREETMPS;	523	FREETMPS;
		524	assert (PL_tmps_ix == -1);
445		525
		526	/* unwind all extra stacks */
446	/POPSTACK_TO (PL_mainstack);//D//use/	527	POPSTACK_TO (PL_mainstack);
		528
		529	/* unwind main stack */
		530	dounwind (-1);
447	}	531	}
448		532
449	while (PL_curstackinfo->si_next)	533	while (PL_curstackinfo->si_next)
450	PL_curstackinfo = PL_curstackinfo->si_next;	534	PL_curstackinfo = PL_curstackinfo->si_next;
451		535
452	while (PL_curstackinfo)	536	while (PL_curstackinfo)
453	{	537	{
454	PERL_SI *p = PL_curstackinfo->si_prev;	538	PERL_SI *p = PL_curstackinfo->si_prev;
455		539
456	{ /D//remove/
457	dSP;
458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459	PUTBACK; /* possibly superfluous */
460	}
461
462	if (!IN_DESTRUCT)	540	if (!IN_DESTRUCT)
463	{
464	dounwind (-1);/D//remove/
465	SvREFCNT_dec (PL_curstackinfo->si_stack);	541	SvREFCNT_dec (PL_curstackinfo->si_stack);
466	}
467		542
468	Safefree (PL_curstackinfo->si_cxstack);	543	Safefree (PL_curstackinfo->si_cxstack);
469	Safefree (PL_curstackinfo);	544	Safefree (PL_curstackinfo);
470	PL_curstackinfo = p;	545	PL_curstackinfo = p;
471	}	546	}
…		…
477	#if !PERL_VERSION_ATLEAST (5,9,0)	552	#if !PERL_VERSION_ATLEAST (5,9,0)
478	Safefree (PL_retstack);	553	Safefree (PL_retstack);
479	#endif	554	#endif
480	}	555	}
481		556
		557	static size_t
		558	coro_rss (struct coro *coro)
		559	{
		560	size_t rss = sizeof (coro);
		561
		562	if (coro->mainstack)
		563	{
		564	if (coro->flags & CF_RUNNING)
		565	{
		566	#define VAR(name,type)coro->name = PL_ ## name;
		567	# include "state.h"
		568	#undef VAR
		569	}
		570
		571	rss += sizeof (coro->curstackinfo);
		572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		575	rss += coro->tmps_max * sizeof (SV *);
		576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		577	rss += coro->scopestack_max * sizeof (I32);
		578	rss += coro->savestack_max * sizeof (ANY);
		579
		580	#if !PERL_VERSION_ATLEAST (5,9,0)
		581	rss += coro->retstack_max * sizeof (OP *);
		582	#endif
		583	}
		584
		585	return rss;
		586	}
		587
		588	/ coroutine stack handling **********************************************/
		589
482	static void	590	static void
483	setup_coro (struct coro *coro)	591	setup_coro (pTHX_ struct coro *coro)
484	{	592	{
485	/*	593	/*
486	* emulate part of the perl startup here.	594	* emulate part of the perl startup here.
487	*/	595	*/
488
489	coro_init_stacks ();	596	coro_init_stacks (aTHX);
490		597
491	PL_curcop = &PL_compiling;	598	PL_curcop = &PL_compiling;
492	PL_in_eval = EVAL_NULL;	599	PL_in_eval = EVAL_NULL;
		600	PL_comppad = 0;
493	PL_curpm = 0;	601	PL_curpm = 0;
494	PL_localizing = 0;	602	PL_localizing = 0;
495	PL_dirty = 0;	603	PL_dirty = 0;
496	PL_restartop = 0;	604	PL_restartop = 0;
497		605
498	{	606	{
499	dSP;	607	dSP;
500	LOGOP myop;	608	LOGOP myop;
501		609
502	/* I have no idea why this is needed, but it is */
503	PUSHMARK (SP);
504
505	SvREFCNT_dec (GvAV (PL_defgv));	610	SvREFCNT_dec (GvAV (PL_defgv));
506	GvAV (PL_defgv) = coro->args; coro->args = 0;	611	GvAV (PL_defgv) = coro->args; coro->args = 0;
507		612
508	Zero (&myop, 1, LOGOP);	613	Zero (&myop, 1, LOGOP);
509	myop.op_next = Nullop;	614	myop.op_next = Nullop;
510	myop.op_flags = OPf_WANT_VOID;	615	myop.op_flags = OPf_WANT_VOID;
511		616
		617	PUSHMARK (SP);
		618	XPUSHs (av_shift (GvAV (PL_defgv)));
		619	PUTBACK;
512	PL_op = (OP *)&myop;	620	PL_op = (OP *)&myop;
513
514	PUSHMARK (SP);
515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516	PUTBACK;
517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	621	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518	SPAGAIN;	622	SPAGAIN;
519	}	623	}
520		624
521	ENTER; /* necessary e.g. for dounwind */	625	ENTER; /* necessary e.g. for dounwind */
522	}	626	}
523		627
524	static void	628	static void
525	free_coro_mortal ()	629	free_coro_mortal (pTHX)
526	{	630	{
527	if (coro_mortal)	631	if (coro_mortal)
528	{	632	{
529	SvREFCNT_dec (coro_mortal);	633	SvREFCNT_dec (coro_mortal);
530	coro_mortal = 0;	634	coro_mortal = 0;
531	}	635	}
532	}	636	}
533		637
		638	static int
		639	runops_coro (pTHX)
		640	{
		641	COP *oldcop = 0;
		642	int oldcxix = -2;
		643
		644	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		645	{
		646	PERL_ASYNC_CHECK ();
		647
		648	if (PL_op->op_type == OP_LEAVESUB)
		649	{
		650	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		651	SV bot, top;
		652	AV av = newAV (); / return values */
		653	runops_proc_t old_runops = PL_runops;
		654	dSP;
		655	ENTER;
		656	SAVETMPS;
		657	EXTEND (SP, 3);
		658	PL_runops = RUNOPS_DEFAULT;
		659
		660	GV *gv = CvGV (cx->blk_sub.cv);
		661	SV *fullname = sv_2mortal (newSV (0));
		662	if (isGV (gv))
		663	gv_efullname3 (fullname, gv, 0);
		664
		665	bot = PL_stack_base + cx->blk_oldsp + 1;
		666	top = cx->blk_gimme == G_ARRAY ? SP + 1
		667	: cx->blk_gimme == G_SCALAR ? bot + 1
		668	: bot;
		669
		670	while (bot < top)
		671	av_push (av, SvREFCNT_inc (*bot++));
		672
		673	PUSHMARK (SP);
		674	PUSHs (&PL_sv_no);
		675	PUSHs (fullname);
		676	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		677	PUTBACK;
		678	call_pv ("Coro::_do_trace_sub", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		679	SPAGAIN;
		680
		681	FREETMPS;
		682	LEAVE;
		683	PL_runops = old_runops;
		684	}
		685
		686	if (oldcop != PL_curcop)
		687	{
		688	oldcop = PL_curcop;
		689
		690	if (PL_curcop != &PL_compiling)
		691	{
		692	runops_proc_t old_runops = PL_runops;
		693	dSP;
		694	ENTER;
		695	SAVETMPS;
		696	EXTEND (SP, 3);
		697	PL_runops = RUNOPS_DEFAULT;
		698
		699	if (oldcxix != cxstack_ix)
		700	{
		701	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		702
		703	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		704	{
		705	GV *gv = CvGV (cx->blk_sub.cv);
		706	SV *fullname = sv_2mortal (newSV (0));
		707	if (isGV (gv))
		708	gv_efullname3 (fullname, gv, 0);
		709
		710	PUSHMARK (SP);
		711	PUSHs (&PL_sv_yes);
		712	PUSHs (fullname);
		713	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		714	PUTBACK;
		715	call_pv ("Coro::_do_trace_sub", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		716	SPAGAIN;
		717	}
		718
		719	oldcxix = cxstack_ix;
		720	}
		721
		722	if (0) {
		723	PUSHMARK (SP);
		724	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		725	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		726	PUTBACK;
		727	call_pv ("Coro::_do_trace_line", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		728	SPAGAIN;
		729	}
		730
		731	FREETMPS;
		732	LEAVE;
		733	PL_runops = old_runops;
		734	}
		735	}
		736	}
		737
		738	TAINT_NOT;
		739	return 0;
		740	}
		741
		742	/* inject a fake call to Coro::State::_cctx_init into the execution */
		743	/* _cctx_init should be careful, as it could be called at almost any time */
		744	/* during execution of a perl program */
534	static void NOINLINE	745	static void NOINLINE
535	prepare_cctx (coro_cctx *cctx)	746	prepare_cctx (pTHX_ coro_cctx *cctx)
536	{	747	{
537	dSP;	748	dSP;
538	LOGOP myop;	749	LOGOP myop;
539		750
		751	PL_top_env = &PL_start_env;
		752
		753	if (cctx->flags & CC_TRACE)
		754	PL_runops = runops_coro;
		755
540	Zero (&myop, 1, LOGOP);	756	Zero (&myop, 1, LOGOP);
541	myop.op_next = PL_op;	757	myop.op_next = PL_op;
542	myop.op_flags = OPf_WANT_VOID;	758	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
543
544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545		759
546	PUSHMARK (SP);	760	PUSHMARK (SP);
		761	EXTEND (SP, 2);
		762	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	763	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548	PUTBACK;	764	PUTBACK;
		765	PL_op = (OP *)&myop;
549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	766	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550	SPAGAIN;	767	SPAGAIN;
551	}	768	}
552		769
		770	/*
		771	* this is a _very_ stripped down perl interpreter ;)
		772	*/
553	static void	773	static void
554	coro_run (void *arg)	774	coro_run (void *arg)
555	{	775	{
		776	dTHX;
		777
556	/* coro_run is the alternative epilogue of transfer() */	778	/* coro_run is the alternative tail of transfer(), so unlock here. */
557	UNLOCK;	779	UNLOCK;
558		780
		781	/* we now skip the entersub that lead to transfer() */
		782	PL_op = PL_op->op_next;
		783
		784	/* inject a fake subroutine call to cctx_init */
		785	prepare_cctx (aTHX_ (coro_cctx *)arg);
		786
		787	/* somebody or something will hit me for both perl_run and PL_restartop */
		788	PL_restartop = PL_op;
		789	perl_run (PL_curinterp);
		790
559	/*	791	/*
560	* this is a _very_ stripped down perl interpreter ;)	792	* If perl-run returns we assume exit() was being called or the coro
		793	* fell off the end, which seems to be the only valid (non-bug)
		794	* reason for perl_run to return. We try to exit by jumping to the
		795	* bootstrap-time "top" top_env, as we cannot restore the "main"
		796	* coroutine as Coro has no such concept
561	*/	797	*/
562	PL_top_env = &PL_start_env;	798	PL_top_env = main_top_env;
563		799	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
564	/* inject call to cctx_init */
565	prepare_cctx ((coro_cctx *)arg);
566
567	/* somebody will hit me for both perl_run and PL_restartop */
568	perl_run (PL_curinterp);
569
570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571	abort ();
572	}	800	}
573		801
574	static coro_cctx *	802	static coro_cctx *
575	cctx_new ()	803	cctx_new ()
576	{	804	{
577	coro_cctx *cctx;	805	coro_cctx *cctx;
		806	void *stack_start;
		807	size_t stack_size;
578		808
579	++cctx_count;	809	++cctx_count;
580		810
581	New (0, cctx, 1, coro_cctx);	811	Newz (0, cctx, 1, coro_cctx);
582		812
583	#if HAVE_MMAP	813	#if HAVE_MMAP
584		814
585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	815	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
586	/* mmap suppsedly does allocate-on-write for us */	816	/* mmap supposedly does allocate-on-write for us */
587	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	817	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588		818
589	if (cctx->sptr == (void *)-1)	819	if (cctx->sptr != (void *)-1)
590	{
591	perror ("FATAL: unable to mmap stack for coroutine");
592	_exit (EXIT_FAILURE);
593	}	820	{
594
595	# if STACKGUARD	821	# if CORO_STACKGUARD
596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	822	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
597	# endif	823	# endif
		824	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		825	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		826	cctx->flags \|= CC_MAPPED;
		827	}
		828	else
		829	#endif
		830	{
		831	cctx->ssize = coro_stacksize * (long)sizeof (long);
		832	New (0, cctx->sptr, coro_stacksize, long);
598		833
599	#else
600
601	cctx->ssize = STACKSIZE * (long)sizeof (long);
602	New (0, cctx->sptr, STACKSIZE, long);
603
604	if (!cctx->sptr)	834	if (!cctx->sptr)
605	{	835	{
606	perror ("FATAL: unable to malloc stack for coroutine");	836	perror ("FATAL: unable to allocate stack for coroutine");
607	_exit (EXIT_FAILURE);	837	_exit (EXIT_FAILURE);
608	}	838	}
609		839
610	#endif	840	stack_start = cctx->sptr;
		841	stack_size = cctx->ssize;
		842	}
611		843
612	#if USE_VALGRIND	844	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
613	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
614	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
615	cctx->ssize + (char *)cctx->sptr
616	);
617	#endif
618
619	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	845	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
620		846
621	return cctx;	847	return cctx;
622	}	848	}
623		849
624	static void	850	static void
…		…
627	if (!cctx)	853	if (!cctx)
628	return;	854	return;
629		855
630	--cctx_count;	856	--cctx_count;
631		857
632	#if USE_VALGRIND	858	#if CORO_USE_VALGRIND
633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	859	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
634	#endif	860	#endif
635		861
636	#if HAVE_MMAP	862	#if HAVE_MMAP
		863	if (cctx->flags & CC_MAPPED)
637	munmap (cctx->sptr, cctx->ssize);	864	munmap (cctx->sptr, cctx->ssize);
638	#else	865	else
		866	#endif
639	Safefree (cctx->sptr);	867	Safefree (cctx->sptr);
640	#endif
641		868
642	Safefree (cctx);	869	Safefree (cctx);
643	}	870	}
644		871
645	static coro_cctx *	872	static coro_cctx *
646	cctx_get ()	873	cctx_get (pTHX)
647	{	874	{
648	coro_cctx *cctx;
649
650	if (cctx_first)	875	while (cctx_first)
651	{	876	{
652	cctx = cctx_first;	877	coro_cctx *cctx = cctx_first;
653	cctx_first = cctx->next;	878	cctx_first = cctx->next;
654	--cctx_idle;	879	--cctx_idle;
655	}	880
656	else	881	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
657	{	882	return cctx;
658	cctx = cctx_new ();	883
659	PL_op = PL_op->op_next;	884	cctx_destroy (cctx);
660	}	885	}
661		886
662	return cctx;	887	return cctx_new ();
663	}	888	}
664		889
665	static void	890	static void
666	cctx_put (coro_cctx *cctx)	891	cctx_put (coro_cctx *cctx)
667	{	892	{
…		…
670	{	895	{
671	coro_cctx *first = cctx_first;	896	coro_cctx *first = cctx_first;
672	cctx_first = first->next;	897	cctx_first = first->next;
673	--cctx_idle;	898	--cctx_idle;
674		899
675	assert (!first->inuse);
676	cctx_destroy (first);	900	cctx_destroy (first);
677	}	901	}
678		902
679	++cctx_idle;	903	++cctx_idle;
680	cctx->next = cctx_first;	904	cctx->next = cctx_first;
681	cctx_first = cctx;	905	cctx_first = cctx;
682	}	906	}
683		907
		908	/ coroutine switching ***************************************************/
		909
684	/* never call directly, always through the coro_state_transfer global variable */	910	/* never call directly, always through the coro_state_transfer global variable */
685	static void NOINLINE	911	static void NOINLINE
686	transfer (struct coro prev, struct coro next, int flags)	912	transfer (pTHX_ struct coro prev, struct coro next)
687	{	913	{
688	dSTACKLEVEL;	914	dSTACKLEVEL;
689		915
690	/* sometimes transfer is only called to set idle_sp */	916	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	917	if (!next)
		918	{
692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	919	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		920	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		921	}
693	else if (prev != next)	922	else if (prev != next)
694	{	923	{
695	coro_cctx *prev__cctx;	924	coro_cctx *prev__cctx;
696		925
697	if (prev->flags & CF_NEW)	926	if (prev->flags & CF_NEW)
698	{	927	{
699	/* create a new empty context */	928	/* create a new empty context */
700	Newz (0, prev->cctx, 1, coro_cctx);	929	Newz (0, prev->cctx, 1, coro_cctx);
701	prev->cctx->inuse = 1;
702	prev->flags &= ~CF_NEW;	930	prev->flags &= ~CF_NEW;
703	prev->flags \|= CF_RUNNING;	931	prev->flags \|= CF_RUNNING;
704	}	932	}
705		933
706	/TODO: must not croak here /	934	/TODO: must not croak here /
…		…
708	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	936	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
709		937
710	if (next->flags & CF_RUNNING)	938	if (next->flags & CF_RUNNING)
711	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	939	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
712		940
		941	if (next->flags & CF_DESTROYED)
		942	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		943
713	prev->flags &= ~CF_RUNNING;	944	prev->flags &= ~CF_RUNNING;
714	next->flags \|= CF_RUNNING;	945	next->flags \|= CF_RUNNING;
715		946
716	LOCK;	947	LOCK;
717		948
718	if (next->mainstack)	949	if (next->flags & CF_NEW)
719	{	950	{
720	/* coroutine already started */	951	/* need to start coroutine */
721	SAVE (prev, flags);	952	next->flags &= ~CF_NEW;
722	LOAD (next);	953	/* first get rid of the old state */
		954	save_perl (aTHX_ prev);
		955	/* setup coroutine call */
		956	setup_coro (aTHX_ next);
723	}	957	}
724	else	958	else
725	{	959	{
726	/* need to start coroutine */	960	/* coroutine already started */
727	assert (next->flags & CF_NEW);	961	save_perl (aTHX_ prev);
728	next->flags &= ~CF_NEW;	962	load_perl (aTHX_ next);
729	/* first get rid of the old state */
730	SAVE (prev, -1);
731	/* setup coroutine call */
732	setup_coro (next);
733	/* need a new stack */
734	assert (!next->stack);
735	}	963	}
736		964
737	prev__cctx = prev->cctx;	965	prev__cctx = prev->cctx;
738		966
739	/* possibly "free" the cctx */	967	/* possibly "free" the cctx */
740	if (prev__cctx->idle_sp == STACKLEVEL && 0)	968	if (prev__cctx->idle_sp == STACKLEVEL)
741	{	969	{
742	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	970	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
743	assert (PL_top_env == prev__cctx->top_env);	971	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
744		972
745	prev->cctx = 0;	973	prev->cctx = 0;
746		974
747	cctx_put (prev__cctx);	975	cctx_put (prev__cctx);
748	prev__cctx->inuse = 0;
749	}	976	}
750		977
751	if (!next->cctx)	978	if (!next->cctx)
752	{
753	next->cctx = cctx_get ();	979	next->cctx = cctx_get (aTHX);
754	assert (!next->cctx->inuse);
755	next->cctx->inuse = 1;
756	}
757		980
758	if (prev__cctx != next->cctx)	981	if (prev__cctx != next->cctx)
759	{	982	{
760	prev__cctx->top_env = PL_top_env;	983	prev__cctx->top_env = PL_top_env;
761	PL_top_env = next->cctx->top_env;	984	PL_top_env = next->cctx->top_env;
762	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	985	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
763	}	986	}
764		987
765	free_coro_mortal ();	988	free_coro_mortal (aTHX);
766
767	UNLOCK;	989	UNLOCK;
768	}	990	}
769	}	991	}
770		992
771	struct transfer_args	993	struct transfer_args
772	{	994	{
773	struct coro prev, next;	995	struct coro prev, next;
774	int flags;
775	};	996	};
776		997
777	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	998	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
778		999
		1000	/ high level stuff ******************************************************/
		1001
779	static void	1002	static int
780	coro_state_destroy (struct coro *coro)	1003	coro_state_destroy (pTHX_ struct coro *coro)
781	{	1004	{
782	if (coro->refcnt--)	1005	if (coro->flags & CF_DESTROYED)
783	return;	1006	return 0;
		1007
		1008	coro->flags \|= CF_DESTROYED;
		1009
		1010	if (coro->flags & CF_READY)
		1011	{
		1012	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1013	/* alternative: look through all ready queues and remove the coro */
		1014	LOCK;
		1015	--coro_nready;
		1016	UNLOCK;
		1017	}
		1018	else
		1019	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
784		1020
785	if (coro->mainstack && coro->mainstack != main_mainstack)	1021	if (coro->mainstack && coro->mainstack != main_mainstack)
786	{	1022	{
787	struct coro temp;	1023	struct coro temp;
		1024
		1025	assert (!(coro->flags & CF_RUNNING));
		1026
		1027	Zero (&temp, 1, struct coro);
		1028	temp.save = CORO_SAVE_ALL;
788		1029
789	if (coro->flags & CF_RUNNING)	1030	if (coro->flags & CF_RUNNING)
790	croak ("FATAL: tried to destroy currently running coroutine");	1031	croak ("FATAL: tried to destroy currently running coroutine");
791		1032
792	SAVE ((&temp), TRANSFER_SAVE_ALL);	1033	save_perl (aTHX_ &temp);
793	LOAD (coro);	1034	load_perl (aTHX_ coro);
794		1035
795	coro_destroy_stacks ();	1036	coro_destroy_stacks (aTHX);
796		1037
797	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1038	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
798		1039
799	coro->mainstack = 0;	1040	coro->mainstack = 0;
800	}	1041	}
801		1042
802	cctx_destroy (coro->cctx);	1043	cctx_destroy (coro->cctx);
803	SvREFCNT_dec (coro->args);	1044	SvREFCNT_dec (coro->args);
804	Safefree (coro);	1045
		1046	if (coro->next) coro->next->prev = coro->prev;
		1047	if (coro->prev) coro->prev->next = coro->next;
		1048	if (coro == coro_first) coro_first = coro->next;
		1049
		1050	return 1;
805	}	1051	}
806		1052
807	static int	1053	static int
808	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1054	coro_state_free (pTHX_ SV sv, MAGIC mg)
809	{	1055	{
810	struct coro coro = (struct coro )mg->mg_ptr;	1056	struct coro coro = (struct coro )mg->mg_ptr;
811	mg->mg_ptr = 0;	1057	mg->mg_ptr = 0;
812		1058
		1059	coro->hv = 0;
		1060
		1061	if (--coro->refcnt < 0)
		1062	{
813	coro_state_destroy (coro);	1063	coro_state_destroy (aTHX_ coro);
		1064	Safefree (coro);
		1065	}
814		1066
815	return 0;	1067	return 0;
816	}	1068	}
817		1069
818	static int	1070	static int
…		…
825	return 0;	1077	return 0;
826	}	1078	}
827		1079
828	static MGVTBL coro_state_vtbl = {	1080	static MGVTBL coro_state_vtbl = {
829	0, 0, 0, 0,	1081	0, 0, 0, 0,
830	coro_state_clear,	1082	coro_state_free,
831	0,	1083	0,
832	#ifdef MGf_DUP	1084	#ifdef MGf_DUP
833	coro_state_dup,	1085	coro_state_dup,
834	#else	1086	#else
835	# define MGf_DUP 0	1087	# define MGf_DUP 0
836	#endif	1088	#endif
837	};	1089	};
838		1090
839	static struct coro *	1091	static struct coro *
840	SvSTATE (SV *coro)	1092	SvSTATE_ (pTHX_ SV *coro)
841	{	1093	{
842	HV *stash;	1094	HV *stash;
843	MAGIC *mg;	1095	MAGIC *mg;
844		1096
845	if (SvROK (coro))	1097	if (SvROK (coro))
…		…
851	/* very slow, but rare, check */	1103	/* very slow, but rare, check */
852	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1104	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
853	croak ("Coro::State object required");	1105	croak ("Coro::State object required");
854	}	1106	}
855		1107
856	mg = SvMAGIC (coro);	1108	mg = CORO_MAGIC (coro);
857	assert (mg->mg_type == PERL_MAGIC_ext);
858	return (struct coro *)mg->mg_ptr;	1109	return (struct coro *)mg->mg_ptr;
859	}	1110	}
860		1111
		1112	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1113
861	static void	1114	static void
862	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1115	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
863	{	1116	{
864	ta->prev = SvSTATE (prev);	1117	ta->prev = SvSTATE (prev_sv);
865	ta->next = SvSTATE (next);	1118	ta->next = SvSTATE (next_sv);
866	ta->flags = flags;
867	}	1119	}
868		1120
869	static void	1121	static void
870	api_transfer (SV prev, SV next, int flags)	1122	api_transfer (SV prev_sv, SV next_sv)
871	{	1123	{
		1124	dTHX;
872	struct transfer_args ta;	1125	struct transfer_args ta;
873		1126
874	prepare_transfer (&ta, prev, next, flags);	1127	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
875	TRANSFER (ta);	1128	TRANSFER (ta);
876	}	1129	}
877		1130
		1131	static int
		1132	api_save (SV *coro_sv, int new_save)
		1133	{
		1134	dTHX;
		1135	struct coro *coro = SvSTATE (coro_sv);
		1136	int old_save = coro->save;
		1137
		1138	if (new_save >= 0)
		1139	coro->save = new_save;
		1140
		1141	return old_save;
		1142	}
		1143
878	/ Coro ******************************************************************/	1144	/ Coro ******************************************************************/
879		1145
880	#define PRIO_MAX 3
881	#define PRIO_HIGH 1
882	#define PRIO_NORMAL 0
883	#define PRIO_LOW -1
884	#define PRIO_IDLE -3
885	#define PRIO_MIN -4
886
887	/* for Coro.pm */
888	static SV *coro_current;
889	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
890	static int coro_nready;
891
892	static void	1146	static void
893	coro_enq (SV *coro_sv)	1147	coro_enq (pTHX_ SV *coro_sv)
894	{	1148	{
895	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1149	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
896	coro_nready++;
897	}	1150	}
898		1151
899	static SV *	1152	static SV *
900	coro_deq (int min_prio)	1153	coro_deq (pTHX_ int min_prio)
901	{	1154	{
902	int prio = PRIO_MAX - PRIO_MIN;	1155	int prio = PRIO_MAX - PRIO_MIN;
903		1156
904	min_prio -= PRIO_MIN;	1157	min_prio -= PRIO_MIN;
905	if (min_prio < 0)	1158	if (min_prio < 0)
906	min_prio = 0;	1159	min_prio = 0;
907		1160
908	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1161	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
909	if (AvFILLp (coro_ready [prio]) >= 0)	1162	if (AvFILLp (coro_ready [prio]) >= 0)
910	{
911	coro_nready--;
912	return av_shift (coro_ready [prio]);	1163	return av_shift (coro_ready [prio]);
913	}
914		1164
915	return 0;	1165	return 0;
916	}	1166	}
917		1167
918	static int	1168	static int
919	api_ready (SV *coro_sv)	1169	api_ready (SV *coro_sv)
920	{	1170	{
		1171	dTHX;
921	struct coro *coro;	1172	struct coro *coro;
922		1173
923	if (SvROK (coro_sv))	1174	if (SvROK (coro_sv))
924	coro_sv = SvRV (coro_sv);	1175	coro_sv = SvRV (coro_sv);
925		1176
926	coro = SvSTATE (coro_sv);	1177	coro = SvSTATE (coro_sv);
927		1178
928	if (coro->flags & CF_READY)	1179	if (coro->flags & CF_READY)
929	return 0;	1180	return 0;
930		1181
931	#if 0 /* this is actually harmless */
932	if (coro->flags & CF_RUNNING)
933	croak ("Coro::ready called on currently running coroutine");
934	#endif
935
936	coro->flags \|= CF_READY;	1182	coro->flags \|= CF_READY;
937		1183
938	LOCK;	1184	LOCK;
939	coro_enq (SvREFCNT_inc (coro_sv));	1185	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1186	++coro_nready;
940	UNLOCK;	1187	UNLOCK;
941		1188
942	return 1;	1189	return 1;
943	}	1190	}
944		1191
945	static int	1192	static int
946	api_is_ready (SV *coro_sv)	1193	api_is_ready (SV *coro_sv)
947	{	1194	{
		1195	dTHX;
948	return !!SvSTATE (coro_sv)->flags & CF_READY;	1196	return !!(SvSTATE (coro_sv)->flags & CF_READY);
949	}	1197	}
950		1198
951	static void	1199	static void
952	prepare_schedule (struct transfer_args *ta)	1200	prepare_schedule (pTHX_ struct transfer_args *ta)
953	{	1201	{
954	SV prev, next;	1202	SV prev_sv, next_sv;
955		1203
956	for (;;)	1204	for (;;)
957	{	1205	{
958	LOCK;	1206	LOCK;
959	next = coro_deq (PRIO_MIN);	1207	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1208
		1209	/* nothing to schedule: call the idle handler */
		1210	if (!next_sv)
		1211	{
		1212	dSP;
		1213	UNLOCK;
		1214
		1215	ENTER;
		1216	SAVETMPS;
		1217
		1218	PUSHMARK (SP);
		1219	PUTBACK;
		1220	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1221
		1222	FREETMPS;
		1223	LEAVE;
		1224	continue;
		1225	}
		1226
		1227	ta->next = SvSTATE (next_sv);
		1228
		1229	/* cannot transfer to destroyed coros, skip and look for next */
		1230	if (ta->next->flags & CF_DESTROYED)
		1231	{
		1232	UNLOCK;
		1233	SvREFCNT_dec (next_sv);
		1234	/* coro_nready is already taken care of by destroy */
		1235	continue;
		1236	}
		1237
		1238	--coro_nready;
960	UNLOCK;	1239	UNLOCK;
961
962	if (next)
963	break;	1240	break;
964
965	{
966	dSP;
967
968	ENTER;
969	SAVETMPS;
970
971	PUSHMARK (SP);
972	PUTBACK;
973	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
974
975	FREETMPS;
976	LEAVE;
977	}	1241	}
978	}
979
980	prev = SvRV (coro_current);
981	SvRV_set (coro_current, next);
982		1242
983	/* free this only after the transfer */	1243	/* free this only after the transfer */
		1244	prev_sv = SvRV (coro_current);
		1245	SvRV_set (coro_current, next_sv);
		1246	ta->prev = SvSTATE (prev_sv);
		1247
		1248	assert (ta->next->flags & CF_READY);
		1249	ta->next->flags &= ~CF_READY;
		1250
984	LOCK;	1251	LOCK;
985	free_coro_mortal ();	1252	free_coro_mortal (aTHX);
		1253	coro_mortal = prev_sv;
986	UNLOCK;	1254	UNLOCK;
987	coro_mortal = prev;
988
989	assert (!SvROK(prev));//D
990	assert (!SvROK(next));//D
991
992	ta->prev = SvSTATE (prev);
993	ta->next = SvSTATE (next);
994	ta->flags = TRANSFER_SAVE_ALL;
995
996	assert (ta->flags & CF_READY);
997	ta->next->flags &= ~CF_READY;
998	}	1255	}
999		1256
1000	static void	1257	static void
1001	prepare_cede (struct transfer_args *ta)	1258	prepare_cede (pTHX_ struct transfer_args *ta)
1002	{	1259	{
1003	api_ready (coro_current);	1260	api_ready (coro_current);
1004
1005	prepare_schedule (ta);	1261	prepare_schedule (aTHX_ ta);
		1262	}
		1263
		1264	static int
		1265	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1266	{
		1267	if (coro_nready)
		1268	{
		1269	SV *prev = SvRV (coro_current);
		1270	prepare_schedule (aTHX_ ta);
		1271	api_ready (prev);
		1272	return 1;
		1273	}
		1274	else
		1275	return 0;
1006	}	1276	}
1007		1277
1008	static void	1278	static void
1009	api_schedule (void)	1279	api_schedule (void)
1010	{	1280	{
		1281	dTHX;
1011	struct transfer_args ta;	1282	struct transfer_args ta;
1012		1283
1013	prepare_schedule (&ta);	1284	prepare_schedule (aTHX_ &ta);
1014	TRANSFER (ta);	1285	TRANSFER (ta);
1015	}	1286	}
1016		1287
1017	static void	1288	static int
1018	api_cede (void)	1289	api_cede (void)
1019	{	1290	{
		1291	dTHX;
1020	struct transfer_args ta;	1292	struct transfer_args ta;
1021		1293
1022	prepare_cede (&ta);	1294	prepare_cede (aTHX_ &ta);
		1295
		1296	if (ta.prev != ta.next)
		1297	{
1023	TRANSFER (ta);	1298	TRANSFER (ta);
		1299	return 1;
		1300	}
		1301	else
		1302	return 0;
		1303	}
		1304
		1305	static int
		1306	api_cede_notself (void)
		1307	{
		1308	dTHX;
		1309	struct transfer_args ta;
		1310
		1311	if (prepare_cede_notself (aTHX_ &ta))
		1312	{
		1313	TRANSFER (ta);
		1314	return 1;
		1315	}
		1316	else
		1317	return 0;
1024	}	1318	}
1025		1319
1026	MODULE = Coro::State PACKAGE = Coro::State	1320	MODULE = Coro::State PACKAGE = Coro::State
1027		1321
1028	PROTOTYPES: DISABLE	1322	PROTOTYPES: DISABLE
…		…
1034	#endif	1328	#endif
1035	BOOT_PAGESIZE;	1329	BOOT_PAGESIZE;
1036		1330
1037	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1331	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1038		1332
		1333	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1334	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1335	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1336	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1337
1039	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1338	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1040	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1339	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1041	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1340	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1341	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1342	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1343	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1344	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1042		1345
1043	main_mainstack = PL_mainstack;	1346	main_mainstack = PL_mainstack;
		1347	main_top_env = PL_top_env;
		1348
		1349	while (main_top_env->je_prev)
		1350	main_top_env = main_top_env->je_prev;
1044		1351
1045	coroapi.ver = CORO_API_VERSION;	1352	coroapi.ver = CORO_API_VERSION;
1046	coroapi.transfer = api_transfer;	1353	coroapi.transfer = api_transfer;
1047		1354
1048	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1355	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1056	HV *hv;	1363	HV *hv;
1057	int i;	1364	int i;
1058		1365
1059	Newz (0, coro, 1, struct coro);	1366	Newz (0, coro, 1, struct coro);
1060	coro->args = newAV ();	1367	coro->args = newAV ();
		1368	coro->save = CORO_SAVE_DEF;
1061	coro->flags = CF_NEW;	1369	coro->flags = CF_NEW;
1062		1370
		1371	if (coro_first) coro_first->prev = coro;
		1372	coro->next = coro_first;
		1373	coro_first = coro;
		1374
1063	hv = newHV ();	1375	coro->hv = hv = newHV ();
1064	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1376	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1065	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1377	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1066		1378
1067	for (i = 1; i < items; i++)	1379	for (i = 1; i < items; i++)
1068	av_push (coro->args, newSVsv (ST (i)));	1380	av_push (coro->args, newSVsv (ST (i)));
1069	}	1381	}
1070	OUTPUT:	1382	OUTPUT:
		1383	RETVAL
		1384
		1385	int
		1386	save (SV *coro, int new_save = -1)
		1387	CODE:
		1388	RETVAL = api_save (coro, new_save);
		1389	OUTPUT:
		1390	RETVAL
		1391
		1392	int
		1393	save_also (SV *coro_sv, int save_also)
		1394	CODE:
		1395	{
		1396	struct coro *coro = SvSTATE (coro_sv);
		1397	RETVAL = coro->save;
		1398	coro->save \|= save_also;
		1399	}
		1400	OUTPUT:
1071	RETVAL	1401	RETVAL
1072		1402
1073	void	1403	void
1074	_set_stacklevel (...)	1404	_set_stacklevel (...)
1075	ALIAS:	1405	ALIAS:
1076	Coro::State::transfer = 1	1406	Coro::State::transfer = 1
1077	Coro::schedule = 2	1407	Coro::schedule = 2
1078	Coro::cede = 3	1408	Coro::cede = 3
1079	Coro::Cont::yield = 4	1409	Coro::cede_notself = 4
1080	CODE:	1410	CODE:
1081	{	1411	{
1082	struct transfer_args ta;	1412	struct transfer_args ta;
1083		1413
1084	switch (ix)	1414	switch (ix)
1085	{	1415	{
1086	case 0:	1416	case 0:
1087	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1417	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1088	ta.next = 0;	1418	ta.next = 0;
1089	ta.flags = TRANSFER_SET_STACKLEVEL;
1090	break;	1419	break;
1091		1420
1092	case 1:	1421	case 1:
1093	if (items != 3)	1422	if (items != 2)
1094	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1423	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1095		1424
1096	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1425	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1097	break;	1426	break;
1098		1427
1099	case 2:	1428	case 2:
1100	prepare_schedule (&ta);	1429	prepare_schedule (aTHX_ &ta);
1101	break;	1430	break;
1102		1431
1103	case 3:	1432	case 3:
1104	prepare_cede (&ta);	1433	prepare_cede (aTHX_ &ta);
1105	break;	1434	break;
1106		1435
1107	case 4:	1436	case 4:
1108	{	1437	if (!prepare_cede_notself (aTHX_ &ta))
1109	SV *yieldstack;	1438	XSRETURN_EMPTY;
1110	SV *sv;
1111	AV *defav = GvAV (PL_defgv);
1112		1439
1113	yieldstack = *hv_fetch (
1114	(HV *)SvRV (coro_current),
1115	"yieldstack", sizeof ("yieldstack") - 1,
1116	0
1117	);
1118
1119	/* set up @_ -- ugly */
1120	av_clear (defav);
1121	av_fill (defav, items - 1);
1122	while (items--)
1123	av_store (defav, items, SvREFCNT_inc (ST(items)));
1124
1125	sv = av_pop ((AV *)SvRV (yieldstack));
1126	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1127	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1128	ta.flags = 0;
1129	SvREFCNT_dec (sv);
1130	}
1131	break;	1440	break;
1132
1133	}	1441	}
1134		1442
		1443	BARRIER;
1135	TRANSFER (ta);	1444	TRANSFER (ta);
1136	}
1137		1445
1138	void	1446	if (GIMME_V != G_VOID && ta.next != ta.prev)
1139	_clone_state_from (SV dst, SV src)	1447	XSRETURN_YES;
		1448	}
		1449
		1450	bool
		1451	_destroy (SV *coro_sv)
1140	CODE:	1452	CODE:
1141	{	1453	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1142	struct coro *coro_src = SvSTATE (src);	1454	OUTPUT:
1143		1455	RETVAL
1144	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1145
1146	++coro_src->refcnt;
1147	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1148	}
1149		1456
1150	void	1457	void
1151	_exit (code)	1458	_exit (code)
1152	int code	1459	int code
1153	PROTOTYPE: $	1460	PROTOTYPE: $
1154	CODE:	1461	CODE:
1155	_exit (code);	1462	_exit (code);
1156		1463
1157	int	1464	int
		1465	cctx_stacksize (int new_stacksize = 0)
		1466	CODE:
		1467	RETVAL = coro_stacksize;
		1468	if (new_stacksize)
		1469	coro_stacksize = new_stacksize;
		1470	OUTPUT:
		1471	RETVAL
		1472
		1473	int
1158	cctx_count ()	1474	cctx_count ()
1159	CODE:	1475	CODE:
1160	RETVAL = cctx_count;	1476	RETVAL = cctx_count;
1161	OUTPUT:	1477	OUTPUT:
1162	RETVAL	1478	RETVAL
…		…
1166	CODE:	1482	CODE:
1167	RETVAL = cctx_idle;	1483	RETVAL = cctx_idle;
1168	OUTPUT:	1484	OUTPUT:
1169	RETVAL	1485	RETVAL
1170		1486
		1487	void
		1488	list ()
		1489	PPCODE:
		1490	{
		1491	struct coro *coro;
		1492	for (coro = coro_first; coro; coro = coro->next)
		1493	if (coro->hv)
		1494	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1495	}
		1496
		1497	void
		1498	call (Coro::State coro, SV *coderef)
		1499	ALIAS:
		1500	eval = 1
		1501	CODE:
		1502	{
		1503	if (coro->mainstack)
		1504	{
		1505	struct coro temp;
		1506	Zero (&temp, 1, struct coro);
		1507	temp.save = CORO_SAVE_ALL;
		1508
		1509	if (!(coro->flags & CF_RUNNING))
		1510	{
		1511	save_perl (aTHX_ &temp);
		1512	load_perl (aTHX_ coro);
		1513	}
		1514
		1515	{
		1516	dSP;
		1517	ENTER;
		1518	SAVETMPS;
		1519	PUSHMARK (SP);
		1520	PUTBACK;
		1521	if (ix)
		1522	eval_sv (coderef, 0);
		1523	else
		1524	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1525	SPAGAIN;
		1526	FREETMPS;
		1527	LEAVE;
		1528	PUTBACK;
		1529	}
		1530
		1531	if (!(coro->flags & CF_RUNNING))
		1532	{
		1533	save_perl (aTHX_ coro);
		1534	load_perl (aTHX_ &temp);
		1535	}
		1536	}
		1537	}
		1538
		1539	SV *
		1540	is_ready (Coro::State coro)
		1541	PROTOTYPE: $
		1542	ALIAS:
		1543	is_ready = CF_READY
		1544	is_running = CF_RUNNING
		1545	is_new = CF_NEW
		1546	is_destroyed = CF_DESTROYED
		1547	CODE:
		1548	RETVAL = boolSV (coro->flags & ix);
		1549	OUTPUT:
		1550	RETVAL
		1551
		1552	void
		1553	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1554	CODE:
		1555	if (flags & CC_TRACE)
		1556	{
		1557	if (!coro->cctx)
		1558	coro->cctx = cctx_new ();
		1559	else if (!(coro->cctx->flags & CC_TRACE))
		1560	croak ("cannot enable tracing on coroutine with custom stack");
		1561
		1562	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1563	}
		1564	else
		1565	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1566	{
		1567	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1568	coro->cctx->flags \|= CC_NOREUSE;
		1569	}
		1570
		1571	SV *
		1572	has_stack (Coro::State coro)
		1573	PROTOTYPE: $
		1574	CODE:
		1575	RETVAL = boolSV (!!coro->cctx);
		1576	OUTPUT:
		1577	RETVAL
		1578
		1579	int
		1580	is_traced (Coro::State coro)
		1581	PROTOTYPE: $
		1582	CODE:
		1583	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1584	OUTPUT:
		1585	RETVAL
		1586
		1587	IV
		1588	rss (Coro::State coro)
		1589	PROTOTYPE: $
		1590	CODE:
		1591	RETVAL = coro_rss (coro);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595
1171	MODULE = Coro::State PACKAGE = Coro	1596	MODULE = Coro::State PACKAGE = Coro
1172		1597
1173	BOOT:	1598	BOOT:
1174	{	1599	{
1175	int i;	1600	int i;
		1601
		1602	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1603	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1604	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1605
		1606	coro_current = get_sv ("Coro::current", FALSE);
		1607	SvREADONLY_on (coro_current);
1176		1608
1177	coro_stash = gv_stashpv ("Coro", TRUE);	1609	coro_stash = gv_stashpv ("Coro", TRUE);
1178		1610
1179	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1611	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1180	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1612	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1181	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1613	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1182	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1614	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1183	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1615	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1184	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1616	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1185		1617
1186	coro_current = get_sv ("Coro::current", FALSE);
1187	SvREADONLY_on (coro_current);
1188
1189	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1618	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1190	coro_ready[i] = newAV ();	1619	coro_ready[i] = newAV ();
1191		1620
1192	{	1621	{
1193	SV *sv = perl_get_sv("Coro::API", 1);	1622	SV *sv = perl_get_sv("Coro::API", 1);
1194		1623
1195	coroapi.schedule = api_schedule;	1624	coroapi.schedule = api_schedule;
		1625	coroapi.save = api_save;
1196	coroapi.cede = api_cede;	1626	coroapi.cede = api_cede;
		1627	coroapi.cede_notself = api_cede_notself;
1197	coroapi.ready = api_ready;	1628	coroapi.ready = api_ready;
1198	coroapi.is_ready = api_is_ready;	1629	coroapi.is_ready = api_is_ready;
1199	coroapi.nready = &coro_nready;	1630	coroapi.nready = &coro_nready;
1200	coroapi.current = coro_current;	1631	coroapi.current = coro_current;
1201		1632
1202	GCoroAPI = &coroapi;	1633	GCoroAPI = &coroapi;
1203	sv_setiv (sv, (IV)&coroapi);	1634	sv_setiv (sv, (IV)&coroapi);
1204	SvREADONLY_on (sv);	1635	SvREADONLY_on (sv);
1205	}	1636	}
1206	}	1637	}
		1638
		1639	void
		1640	_set_current (SV *current)
		1641	PROTOTYPE: $
		1642	CODE:
		1643	SvREFCNT_dec (SvRV (coro_current));
		1644	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1207		1645
1208	int	1646	int
1209	prio (Coro::State coro, int newprio = 0)	1647	prio (Coro::State coro, int newprio = 0)
1210	ALIAS:	1648	ALIAS:
1211	nice = 1	1649	nice = 1
…		…
1214	RETVAL = coro->prio;	1652	RETVAL = coro->prio;
1215		1653
1216	if (items > 1)	1654	if (items > 1)
1217	{	1655	{
1218	if (ix)	1656	if (ix)
1219	newprio += coro->prio;	1657	newprio = coro->prio - newprio;
1220		1658
1221	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1659	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1222	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1660	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1223		1661
1224	coro->prio = newprio;	1662	coro->prio = newprio;
1225	}	1663	}
1226	}	1664	}
		1665	OUTPUT:
		1666	RETVAL
1227		1667
1228	SV *	1668	SV *
1229	ready (SV *self)	1669	ready (SV *self)
1230	PROTOTYPE: $	1670	PROTOTYPE: $
1231	CODE:	1671	CODE:
1232	RETVAL = boolSV (api_ready (self));	1672	RETVAL = boolSV (api_ready (self));
1233	OUTPUT:	1673	OUTPUT:
1234	RETVAL	1674	RETVAL
1235		1675
1236	SV *
1237	is_ready (SV *self)
1238	PROTOTYPE: $
1239	CODE:
1240	RETVAL = boolSV (api_is_ready (self));
1241	OUTPUT:
1242	RETVAL
1243
1244	int	1676	int
1245	nready (...)	1677	nready (...)
1246	PROTOTYPE:	1678	PROTOTYPE:
1247	CODE:	1679	CODE:
1248	RETVAL = coro_nready;	1680	RETVAL = coro_nready;
1249	OUTPUT:	1681	OUTPUT:
1250	RETVAL	1682	RETVAL
1251		1683
		1684	# for async_pool speedup
1252	void	1685	void
1253	_set_current (SV *current)	1686	_pool_1 (SV *cb)
1254	PROTOTYPE: $
1255	CODE:	1687	CODE:
1256	SvREFCNT_dec (SvRV (coro_current));	1688	{
1257	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1689	int i, len;
		1690	HV hv = (HV )SvRV (coro_current);
		1691	AV *defav = GvAV (PL_defgv);
		1692	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1693	AV *invoke_av;
		1694
		1695	if (!invoke)
		1696	croak ("\3terminate\2\n");
		1697
		1698	hv_store (hv, "desc", sizeof ("desc") - 1,
		1699	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1700
		1701	invoke_av = (AV *)SvRV (invoke);
		1702	len = av_len (invoke_av);
		1703
		1704	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1705
		1706	if (len > 0)
		1707	{
		1708	av_fill (defav, len - 1);
		1709	for (i = 0; i < len; ++i)
		1710	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1711	}
		1712
		1713	SvREFCNT_dec (invoke);
		1714	}
		1715
		1716	void
		1717	_pool_2 (SV *cb)
		1718	CODE:
		1719	{
		1720	struct coro *coro = SvSTATE (coro_current);
		1721
		1722	sv_setsv (cb, &PL_sv_undef);
		1723
		1724	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1725	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1726	croak ("\3terminate\2\n");
		1727
		1728	av_clear (GvAV (PL_defgv));
		1729	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1730	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1731	coro->save = CORO_SAVE_DEF;
		1732	coro->prio = 0;
		1733	av_push (av_async_pool, newSVsv (coro_current));
		1734	}
		1735
1258		1736
1259	MODULE = Coro::State PACKAGE = Coro::AIO	1737	MODULE = Coro::State PACKAGE = Coro::AIO
1260		1738
1261	SV *	1739	SV *
1262	_get_state ()	1740	_get_state ()
1263	CODE:	1741	CODE:
1264	{	1742	{
1265	struct {	1743	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		1744
		1745	RETVAL = newSV (sizeof (struct io_state));
		1746	data = (struct io_state *)SvPVX (RETVAL);
		1747	SvCUR_set (RETVAL, sizeof (struct io_state));
		1748	SvPOK_only (RETVAL);
		1749
1272	data.errorno = errno;	1750	data->errorno = errno;
1273	data.laststype = PL_laststype;	1751	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1752	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1753	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1754	}
1279	OUTPUT:	1755	OUTPUT:
1280	RETVAL	1756	RETVAL
1281		1757
1282	void	1758	void
1283	_set_state (char *data_)	1759	_set_state (char *data_)
1284	PROTOTYPE: $	1760	PROTOTYPE: $
1285	CODE:	1761	CODE:
1286	{	1762	{
1287	struct {	1763	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1764
1294	errno = data->errorno;	1765	errno = data->errorno;
1295	PL_laststype = data->laststype;	1766	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1767	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1768	PL_statcache = data->statcache;
1298	}	1769	}
		1770

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Comparing Coro/Coro/State.xs (file contents): Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC vs. Revision 1.167 by root, Thu Sep 27 15:52:31 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.117 by root, Fri Dec 1 19:41:06 2006 UTC vs.
Revision 1.167 by root, Thu Sep 27 15:52:31 2007 UTC