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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs.
Revision 1.165 by root, Wed Sep 26 19:26:48 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	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	11	#include <stdio.h>
41	#include <errno.h>	12	#include <errno.h>
42		13	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		14
51	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
52	# include <unistd.h>	16	# include <unistd.h>
53	# include <sys/mman.h>	17	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
69	#else	33	#else
70	# define PAGESIZE 0	34	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
72	#endif	36	#endif
73		37
74	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
76	* 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. */
77	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
79		97
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		99
82	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	103	#else
85	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
86	#endif	106	#endif
87		107
88	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
89		109
90	#include "CoroAPI.h"	110	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		111
94	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	116	#else
99	# define LOCK (void)0	117	# define LOCK (void)0
100	# define UNLOCK (void)0	118	# define UNLOCK (void)0
101	#endif	119	#endif
102		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;
103	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
104	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;
105	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
107		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
108	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_TRACE = 0x02,
		148	CC_NOREUSE = 0x04, /* throw this away after tracing */
		149	};
110		150
111	/* this is a structure representing a c-level coroutine */	151	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	152	typedef struct coro_cctx {
113	struct coro_cctx *next;	153	struct coro_cctx *next;
114		154
115	/* the stack */	155	/* the stack */
116	void *sptr;	156	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	157	size_t ssize;
118		158
119	/* cpu state */	159	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	160	void idle_sp; / sp of top-level transfer/schedule/cede call */
		161	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	162	JMPENV *top_env;
122	coro_context cctx;	163	coro_context cctx;
123		164
124	#if USE_VALGRIND	165	#if CORO_USE_VALGRIND
125	int valgrind_id;	166	int valgrind_id;
126	#endif	167	#endif
		168	unsigned char flags;
127	} coro_cctx;	169	} coro_cctx;
		170
		171	enum {
		172	CF_RUNNING = 0x0001, /* coroutine is running */
		173	CF_READY = 0x0002, /* coroutine is ready */
		174	CF_NEW = 0x0004, /* has never been switched to */
		175	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		176	};
128		177
129	/* this is a structure representing a perl-level coroutine */	178	/* this is a structure representing a perl-level coroutine */
130	struct coro {	179	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	180	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	181	coro_cctx *cctx;
133		182
134	/* data associated with this coroutine (initial args) */	183	/* data associated with this coroutine (initial args) */
135	AV *args;	184	AV *args;
136	int refcnt;	185	int refcnt;
		186	int save; /* CORO_SAVE flags */
		187	int flags; /* CF_ flags */
137		188
138	/* optionally saved, might be zero */	189	/* optionally saved, might be zero */
139	AV *defav;	190	AV defav; / @_ */
140	SV *defsv;	191	SV defsv; / $_ */
141	SV *errsv;	192	SV errsv; / $@ */
		193	GV deffh; / default filehandle */
		194	SV irssv; / $/ */
		195	SV irssv_sv; / real $/ cache */
142		196
143	#define VAR(name,type) type name;	197	#define VAR(name,type) type name;
144	# include "state.h"	198	# include "state.h"
145	#undef VAR	199	#undef VAR
146		200
147	/* coro process data */	201	/* coro process data */
148	int prio;	202	int prio;
		203
		204	/* linked list */
		205	struct coro next, prev;
		206	HV hv; / the perl hash associated with this coro, if any */
149	};	207	};
150		208
151	typedef struct coro *Coro__State;	209	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	210	typedef struct coro *Coro__State_or_hashref;
153		211
		212	/ Coro ******************************************************************/
		213
		214	#define PRIO_MAX 3
		215	#define PRIO_HIGH 1
		216	#define PRIO_NORMAL 0
		217	#define PRIO_LOW -1
		218	#define PRIO_IDLE -3
		219	#define PRIO_MIN -4
		220
		221	/* for Coro.pm */
		222	static SV *coro_current;
		223	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		224	static int coro_nready;
		225	static struct coro *coro_first;
		226
		227	/ lowlevel stuff ********************************************************/
		228
154	static AV *	229	static AV *
155	coro_clone_padlist (CV *cv)	230	coro_clone_padlist (pTHX_ CV *cv)
156	{	231	{
157	AV *padlist = CvPADLIST (cv);	232	AV *padlist = CvPADLIST (cv);
158	AV newpadlist, newpad;	233	AV newpadlist, newpad;
159		234
160	newpadlist = newAV ();	235	newpadlist = newAV ();
…		…
172		247
173	return newpadlist;	248	return newpadlist;
174	}	249	}
175		250
176	static void	251	static void
177	free_padlist (AV *padlist)	252	free_padlist (pTHX_ AV *padlist)
178	{	253	{
179	/* may be during global destruction */	254	/* may be during global destruction */
180	if (SvREFCNT (padlist))	255	if (SvREFCNT (padlist))
181	{	256	{
182	I32 i = AvFILLp (padlist);	257	I32 i = AvFILLp (padlist);
…		…
203	AV *padlist;	278	AV *padlist;
204	AV av = (AV )mg->mg_obj;	279	AV av = (AV )mg->mg_obj;
205		280
206	/* casting is fun. */	281	/* casting is fun. */
207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	282	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
208	free_padlist (padlist);	283	free_padlist (aTHX_ padlist);
209		284
210	SvREFCNT_dec (av);	285	SvREFCNT_dec (av);
211		286
212	return 0;	287	return 0;
213	}	288	}
214		289
215	#define PERL_MAGIC_coro PERL_MAGIC_ext	290	#define PERL_MAGIC_coro PERL_MAGIC_ext
216		291
217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	292	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
218		293
		294	#define CORO_MAGIC(cv) \
		295	SvMAGIC (cv) \
		296	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		297	? SvMAGIC (cv) \
		298	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		299	: 0
		300
219	/* the next two functions merely cache the padlists */	301	/* the next two functions merely cache the padlists */
220	static void	302	static void
221	get_padlist (CV *cv)	303	get_padlist (pTHX_ CV *cv)
222	{	304	{
223	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	305	MAGIC *mg = CORO_MAGIC (cv);
		306	AV *av;
224		307
225	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	308	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
226	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	309	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
227	else	310	else
228	{	311	{
229	#if 0	312	#if CORO_PREFER_PERL_FUNCTIONS
230	/* this is probably cleaner, but also slower? */	313	/* this is probably cleaner, but also slower? */
231	CV *cp = Perl_cv_clone (cv);	314	CV *cp = Perl_cv_clone (cv);
232	CvPADLIST (cv) = CvPADLIST (cp);	315	CvPADLIST (cv) = CvPADLIST (cp);
233	CvPADLIST (cp) = 0;	316	CvPADLIST (cp) = 0;
234	SvREFCNT_dec (cp);	317	SvREFCNT_dec (cp);
235	#else	318	#else
236	CvPADLIST (cv) = coro_clone_padlist (cv);	319	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
237	#endif	320	#endif
238	}	321	}
239	}	322	}
240		323
241	static void	324	static void
242	put_padlist (CV *cv)	325	put_padlist (pTHX_ CV *cv)
243	{	326	{
244	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	327	MAGIC *mg = CORO_MAGIC (cv);
		328	AV *av;
245		329
246	if (!mg)	330	if (!mg)
247	{	331	{
248	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	332	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
249	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	333	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
250	mg->mg_virtual = &vtbl_coro;	334	mg->mg_virtual = &vtbl_coro;
251	mg->mg_obj = (SV *)newAV ();	335	mg->mg_obj = (SV *)newAV ();
252	}	336	}
253		337
254	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	338	av = (AV *)mg->mg_obj;
		339
		340	if (AvFILLp (av) >= AvMAX (av))
		341	av_extend (av, AvMAX (av) + 1);
		342
		343	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
255	}	344	}
		345
		346	/ load & save, init *****************************************************/
256		347
257	#define SB do {	348	#define SB do {
258	#define SE } while (0)	349	#define SE } while (0)
259		350
260	#define LOAD(state) load_state((state));
261	#define SAVE(state,flags) save_state((state),(flags));
262
263	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	351	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
264		352
265	static void	353	static void
266	load_state(Coro__State c)	354	load_perl (pTHX_ Coro__State c)
267	{	355	{
268	#define VAR(name,type) PL_ ## name = c->name;	356	#define VAR(name,type) PL_ ## name = c->name;
269	# include "state.h"	357	# include "state.h"
270	#undef VAR	358	#undef VAR
271		359
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		363	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		364
		365	if (c->irssv)
		366	{
		367	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		368	{
		369	SvREFCNT_dec (c->irssv);
		370	c->irssv = 0;
		371	}
		372	else
		373	{
		374	REPLACE_SV (PL_rs, c->irssv);
		375	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		376	sv_setsv (c->irssv_sv, PL_rs);
		377	}
		378	}
275		379
276	{	380	{
277	dSP;	381	dSP;
278	CV *cv;	382	CV *cv;
279		383
280	/* now do the ugly restore mess */	384	/* now do the ugly restore mess */
281	while ((cv = (CV *)POPs))	385	while ((cv = (CV *)POPs))
282	{	386	{
283	AV padlist = (AV )POPs;
284
285	if (padlist)
286	{
287	put_padlist (cv); /* mark this padlist as available */	387	put_padlist (aTHX_ cv); /* mark this padlist as available */
288	CvPADLIST(cv) = padlist;	388	CvDEPTH (cv) = PTR2IV (POPs);
289	}	389	CvPADLIST (cv) = (AV *)POPs;
290
291	++CvDEPTH(cv);
292	}	390	}
293		391
294	PUTBACK;	392	PUTBACK;
295	}	393	}
296	}	394	}
297		395
298	static void	396	static void
299	save_state(Coro__State c, int flags)	397	save_perl (pTHX_ Coro__State c)
300	{	398	{
301	{	399	{
302	dSP;	400	dSP;
303	I32 cxix = cxstack_ix;	401	I32 cxix = cxstack_ix;
304	PERL_CONTEXT *ccstk = cxstack;	402	PERL_CONTEXT *ccstk = cxstack;
…		…
307	/*	405	/*
308	* the worst thing you can imagine happens first - we have to save	406	* the worst thing you can imagine happens first - we have to save
309	* (and reinitialize) all cv's in the whole callchain :(	407	* (and reinitialize) all cv's in the whole callchain :(
310	*/	408	*/
311		409
312	PUSHs (Nullsv);	410	XPUSHs (Nullsv);
313	/* this loop was inspired by pp_caller */	411	/* this loop was inspired by pp_caller */
314	for (;;)	412	for (;;)
315	{	413	{
316	while (cxix >= 0)	414	while (cxix >= 0)
317	{	415	{
318	PERL_CONTEXT *cx = &ccstk[cxix--];	416	PERL_CONTEXT *cx = &ccstk[cxix--];
319		417
320	if (CxTYPE(cx) == CXt_SUB)	418	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
321	{	419	{
322	CV *cv = cx->blk_sub.cv;	420	CV *cv = cx->blk_sub.cv;
		421
323	if (CvDEPTH(cv))	422	if (CvDEPTH (cv))
324	{	423	{
325	EXTEND (SP, CvDEPTH(cv)*2);	424	EXTEND (SP, 3);
326
327	while (--CvDEPTH(cv))
328	{
329	/* this tells the restore code to increment CvDEPTH */
330	PUSHs (Nullsv);
331	PUSHs ((SV *)cv);
332	}
333
334	PUSHs ((SV *)CvPADLIST(cv));	425	PUSHs ((SV *)CvPADLIST (cv));
		426	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
335	PUSHs ((SV *)cv);	427	PUSHs ((SV *)cv);
336		428
		429	CvDEPTH (cv) = 0;
337	get_padlist (cv);	430	get_padlist (aTHX_ cv);
338	}	431	}
339	}	432	}
340	#ifdef CXt_FORMAT
341	else if (CxTYPE(cx) == CXt_FORMAT)
342	{
343	/* I never used formats, so how should I know how these are implemented? */
344	/* my bold guess is as a simple, plain sub... */
345	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
346	}
347	#endif
348	}	433	}
349		434
350	if (top_si->si_type == PERLSI_MAIN)	435	if (top_si->si_type == PERLSI_MAIN)
351	break;	436	break;
352		437
353	top_si = top_si->si_prev;	438	top_si = top_si->si_prev;
354	ccstk = top_si->si_cxstack;	439	ccstk = top_si->si_cxstack;
355	cxix = top_si->si_cxix;	440	cxix = top_si->si_cxix;
356	}	441	}
357		442
358	PUTBACK;	443	PUTBACK;
359	}	444	}
360		445
361	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	446	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
362	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	447	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
363	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	448	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		449	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		450	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
364		451
365	#define VAR(name,type)c->name = PL_ ## name;	452	#define VAR(name,type)c->name = PL_ ## name;
366	# include "state.h"	453	# include "state.h"
367	#undef VAR	454	#undef VAR
368	}	455	}
…		…
371	* allocate various perl stacks. This is an exact copy	458	* allocate various perl stacks. This is an exact copy
372	* of perl.c:init_stacks, except that it uses less memory	459	* of perl.c:init_stacks, except that it uses less memory
373	* on the (sometimes correct) assumption that coroutines do	460	* on the (sometimes correct) assumption that coroutines do
374	* not usually need a lot of stackspace.	461	* not usually need a lot of stackspace.
375	*/	462	*/
		463	#if CORO_PREFER_PERL_FUNCTIONS
		464	# define coro_init_stacks init_stacks
		465	#else
376	static void	466	static void
377	coro_init_stacks ()	467	coro_init_stacks (pTHX)
378	{	468	{
379	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	469	PL_curstackinfo = new_stackinfo(64, 6);
380	PL_curstackinfo->si_type = PERLSI_MAIN;	470	PL_curstackinfo->si_type = PERLSI_MAIN;
381	PL_curstack = PL_curstackinfo->si_stack;	471	PL_curstack = PL_curstackinfo->si_stack;
382	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
383		473
384	PL_stack_base = AvARRAY(PL_curstack);	474	PL_stack_base = AvARRAY(PL_curstack);
385	PL_stack_sp = PL_stack_base;	475	PL_stack_sp = PL_stack_base;
386	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
387		477
388	New(50,PL_tmps_stack,96,SV*);	478	New(50,PL_tmps_stack,64,SV*);
389	PL_tmps_floor = -1;	479	PL_tmps_floor = -1;
390	PL_tmps_ix = -1;	480	PL_tmps_ix = -1;
391	PL_tmps_max = 96;	481	PL_tmps_max = 64;
392		482
393	New(54,PL_markstack,16,I32);	483	New(54,PL_markstack,16,I32);
394	PL_markstack_ptr = PL_markstack;	484	PL_markstack_ptr = PL_markstack;
395	PL_markstack_max = PL_markstack + 16;	485	PL_markstack_max = PL_markstack + 16;
396		486
…		…
400		490
401	New(54,PL_scopestack,16,I32);	491	New(54,PL_scopestack,16,I32);
402	PL_scopestack_ix = 0;	492	PL_scopestack_ix = 0;
403	PL_scopestack_max = 16;	493	PL_scopestack_max = 16;
404		494
405	New(54,PL_savestack,96,ANY);	495	New(54,PL_savestack,64,ANY);
406	PL_savestack_ix = 0;	496	PL_savestack_ix = 0;
407	PL_savestack_max = 96;	497	PL_savestack_max = 64;
408		498
409	#if !PERL_VERSION_ATLEAST (5,9,0)	499	#if !PERL_VERSION_ATLEAST (5,9,0)
410	New(54,PL_retstack,8,OP*);	500	New(54,PL_retstack,4,OP*);
411	PL_retstack_ix = 0;	501	PL_retstack_ix = 0;
412	PL_retstack_max = 8;	502	PL_retstack_max = 4;
413	#endif	503	#endif
414	}	504	}
		505	#endif
415		506
416	/*	507	/*
417	* destroy the stacks, the callchain etc...	508	* destroy the stacks, the callchain etc...
418	*/	509	*/
419	static void	510	static void
420	coro_destroy_stacks ()	511	coro_destroy_stacks (pTHX)
421	{	512	{
422	if (!IN_DESTRUCT)	513	if (!IN_DESTRUCT)
423	{	514	{
424	/* is this ugly, I ask? */	515	/* restore all saved variables and stuff */
425	LEAVE_SCOPE (0);	516	LEAVE_SCOPE (0);
		517	assert (PL_tmps_floor == -1);
426		518
427	/* sure it is, but more important: is it correct?? :/ */	519	/* free all temporaries */
428	FREETMPS;	520	FREETMPS;
		521	assert (PL_tmps_ix == -1);
429		522
		523	/* unwind all extra stacks */
430	/POPSTACK_TO (PL_mainstack);//D//use/	524	POPSTACK_TO (PL_mainstack);
		525
		526	/* unwind main stack */
		527	dounwind (-1);
431	}	528	}
432		529
433	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
434	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
435		532
436	while (PL_curstackinfo)	533	while (PL_curstackinfo)
437	{	534	{
438	PERL_SI *p = PL_curstackinfo->si_prev;	535	PERL_SI *p = PL_curstackinfo->si_prev;
439		536
440	{ /D//remove/
441	dSP;
442	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
443	PUTBACK; /* possibly superfluous */
444	}
445
446	if (!IN_DESTRUCT)	537	if (!IN_DESTRUCT)
447	{
448	dounwind (-1);/D//remove/
449	SvREFCNT_dec (PL_curstackinfo->si_stack);	538	SvREFCNT_dec (PL_curstackinfo->si_stack);
450	}
451		539
452	Safefree (PL_curstackinfo->si_cxstack);	540	Safefree (PL_curstackinfo->si_cxstack);
453	Safefree (PL_curstackinfo);	541	Safefree (PL_curstackinfo);
454	PL_curstackinfo = p;	542	PL_curstackinfo = p;
455	}	543	}
…		…
461	#if !PERL_VERSION_ATLEAST (5,9,0)	549	#if !PERL_VERSION_ATLEAST (5,9,0)
462	Safefree (PL_retstack);	550	Safefree (PL_retstack);
463	#endif	551	#endif
464	}	552	}
465		553
		554	static size_t
		555	coro_rss (struct coro *coro)
		556	{
		557	size_t rss = sizeof (coro);
		558
		559	if (coro->mainstack)
		560	{
		561	if (coro->flags & CF_RUNNING)
		562	{
		563	#define VAR(name,type)coro->name = PL_ ## name;
		564	# include "state.h"
		565	#undef VAR
		566	}
		567
		568	rss += sizeof (coro->curstackinfo);
		569	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		570	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		571	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		572	rss += coro->tmps_max * sizeof (SV *);
		573	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		574	rss += coro->scopestack_max * sizeof (I32);
		575	rss += coro->savestack_max * sizeof (ANY);
		576
		577	#if !PERL_VERSION_ATLEAST (5,9,0)
		578	rss += coro->retstack_max * sizeof (OP *);
		579	#endif
		580	}
		581
		582	return rss;
		583	}
		584
		585	/ coroutine stack handling **********************************************/
		586
466	static void	587	static void
467	setup_coro (struct coro *coro)	588	setup_coro (pTHX_ struct coro *coro)
468	{	589	{
469	/*	590	/*
470	* emulate part of the perl startup here.	591	* emulate part of the perl startup here.
471	*/	592	*/
472
473	coro_init_stacks ();	593	coro_init_stacks (aTHX);
474		594
		595	PL_curcop = &PL_compiling;
		596	PL_in_eval = EVAL_NULL;
475	PL_curcop = 0;	597	PL_comppad = 0;
476	PL_in_eval = 0;
477	PL_curpm = 0;	598	PL_curpm = 0;
		599	PL_localizing = 0;
		600	PL_dirty = 0;
		601	PL_restartop = 0;
478		602
479	{	603	{
480	dSP;	604	dSP;
481	LOGOP myop;	605	LOGOP myop;
482		606
483	/* I have no idea why this is needed, but it is */
484	PUSHMARK (SP);
485
486	SvREFCNT_dec (GvAV (PL_defgv));	607	SvREFCNT_dec (GvAV (PL_defgv));
487	GvAV (PL_defgv) = coro->args; coro->args = 0;	608	GvAV (PL_defgv) = coro->args; coro->args = 0;
488		609
489	Zero (&myop, 1, LOGOP);	610	Zero (&myop, 1, LOGOP);
490	myop.op_next = Nullop;	611	myop.op_next = Nullop;
491	myop.op_flags = OPf_WANT_VOID;	612	myop.op_flags = OPf_WANT_VOID;
492		613
		614	PUSHMARK (SP);
		615	XPUSHs (av_shift (GvAV (PL_defgv)));
		616	PUTBACK;
493	PL_op = (OP *)&myop;	617	PL_op = (OP *)&myop;
494
495	PUSHMARK (SP);
496	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
497	PUTBACK;
498	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	618	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
499	SPAGAIN;	619	SPAGAIN;
500
501	ENTER; /* necessary e.g. for dounwind */
502	}	620	}
503	}
504		621
		622	ENTER; /* necessary e.g. for dounwind */
		623	}
		624
505	static void	625	static void
506	free_coro_mortal ()	626	free_coro_mortal (pTHX)
507	{	627	{
508	if (coro_mortal)	628	if (coro_mortal)
509	{	629	{
510	SvREFCNT_dec (coro_mortal);	630	SvREFCNT_dec (coro_mortal);
511	coro_mortal = 0;	631	coro_mortal = 0;
512	}	632	}
513	}	633	}
514		634
		635	static void
		636	do_trace (pTHX)
		637	{
		638	if (PL_curcop != &PL_compiling)
		639	{
		640	runops_proc_t old_runops = PL_runops;
		641	dSP;
		642	ENTER;
		643	SAVETMPS;
		644	PUSHMARK (SP);
		645	PUTBACK;
		646	PL_runops = RUNOPS_DEFAULT;
		647	call_pv ("Coro::_do_trace", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD \| G_NOARGS);
		648	PL_runops = old_runops;
		649	SPAGAIN;
		650	FREETMPS;
		651	LEAVE;
		652	PUTBACK;
		653	}
		654	}
		655
		656	static int
		657	runops_coro (pTHX)
		658	{
		659	COP *oldcop = 0;
		660
		661	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		662	{
		663	PERL_ASYNC_CHECK ();
		664
		665	if (oldcop != PL_curcop)
		666	{
		667	oldcop = PL_curcop;
		668	do_trace (aTHX);
		669	}
		670	}
		671
		672	TAINT_NOT;
		673	return 0;
		674	}
		675
		676	/* inject a fake call to Coro::State::_cctx_init into the execution */
		677	/* _cctx_init should be careful, as it could be called at almost any time */
		678	/* during execution of a perl program */
515	static void NOINLINE	679	static void NOINLINE
516	prepare_cctx (coro_cctx *cctx)	680	prepare_cctx (pTHX_ coro_cctx *cctx)
517	{	681	{
518	dSP;	682	dSP;
519	LOGOP myop;	683	LOGOP myop;
520		684
		685	PL_top_env = &PL_start_env;
		686
		687	if (cctx->flags & CC_TRACE)
		688	PL_runops = runops_coro;
		689
521	Zero (&myop, 1, LOGOP);	690	Zero (&myop, 1, LOGOP);
522	myop.op_next = PL_op;	691	myop.op_next = PL_op;
523	myop.op_flags = OPf_WANT_VOID;	692	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
524
525	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
526		693
527	PUSHMARK (SP);	694	PUSHMARK (SP);
		695	EXTEND (SP, 2);
		696	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
528	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	697	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
529	PUTBACK;	698	PUTBACK;
		699	PL_op = (OP *)&myop;
530	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	700	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
531	SPAGAIN;	701	SPAGAIN;
532	}	702	}
533		703
		704	/*
		705	* this is a _very_ stripped down perl interpreter ;)
		706	*/
534	static void	707	static void
535	coro_run (void *arg)	708	coro_run (void *arg)
536	{	709	{
		710	dTHX;
		711
537	/* coro_run is the alternative epilogue of transfer() */	712	/* coro_run is the alternative tail of transfer(), so unlock here. */
538	UNLOCK;	713	UNLOCK;
539		714
		715	/* we now skip the entersub that lead to transfer() */
		716	PL_op = PL_op->op_next;
		717
		718	/* inject a fake subroutine call to cctx_init */
		719	prepare_cctx (aTHX_ (coro_cctx *)arg);
		720
		721	/* somebody or something will hit me for both perl_run and PL_restartop */
		722	PL_restartop = PL_op;
		723	perl_run (PL_curinterp);
		724
540	/*	725	/*
541	* this is a _very_ stripped down perl interpreter ;)	726	* If perl-run returns we assume exit() was being called or the coro
		727	* fell off the end, which seems to be the only valid (non-bug)
		728	* reason for perl_run to return. We try to exit by jumping to the
		729	* bootstrap-time "top" top_env, as we cannot restore the "main"
		730	* coroutine as Coro has no such concept
542	*/	731	*/
543	PL_top_env = &PL_start_env;	732	PL_top_env = main_top_env;
544		733	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
545	/* inject call to cctx_init */
546	prepare_cctx ((coro_cctx *)arg);
547
548	/* somebody will hit me for both perl_run and PL_restartop */
549	perl_run (PL_curinterp);
550
551	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
552	abort ();
553	}	734	}
554		735
555	static coro_cctx *	736	static coro_cctx *
556	cctx_new ()	737	cctx_new ()
557	{	738	{
558	coro_cctx *cctx;	739	coro_cctx *cctx;
		740	void *stack_start;
		741	size_t stack_size;
559		742
560	++cctx_count;	743	++cctx_count;
561		744
562	New (0, cctx, 1, coro_cctx);	745	Newz (0, cctx, 1, coro_cctx);
563		746
564	#if HAVE_MMAP	747	#if HAVE_MMAP
565		748
566	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	749	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
567	/* mmap suppsedly does allocate-on-write for us */	750	/* mmap supposedly does allocate-on-write for us */
568	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	751	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
569		752
570	if (cctx->sptr == (void *)-1)	753	if (cctx->sptr != (void *)-1)
571	{
572	perror ("FATAL: unable to mmap stack for coroutine");
573	_exit (EXIT_FAILURE);
574	}	754	{
575
576	# if STACKGUARD	755	# if CORO_STACKGUARD
577	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	756	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
578	# endif	757	# endif
		758	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		759	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		760	cctx->flags \|= CC_MAPPED;
		761	}
		762	else
		763	#endif
		764	{
		765	cctx->ssize = coro_stacksize * (long)sizeof (long);
		766	New (0, cctx->sptr, coro_stacksize, long);
579		767
580	#else
581
582	cctx->ssize = STACKSIZE * (long)sizeof (long);
583	New (0, cctx->sptr, STACKSIZE, long);
584
585	if (!cctx->sptr)	768	if (!cctx->sptr)
586	{	769	{
587	perror ("FATAL: unable to malloc stack for coroutine");	770	perror ("FATAL: unable to allocate stack for coroutine");
588	_exit (EXIT_FAILURE);	771	_exit (EXIT_FAILURE);
589	}	772	}
590		773
591	#endif	774	stack_start = cctx->sptr;
		775	stack_size = cctx->ssize;
		776	}
592		777
593	#if USE_VALGRIND	778	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
594	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
595	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
596	cctx->ssize + (char *)cctx->sptr
597	);
598	#endif
599
600	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	779	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
601		780
602	return cctx;	781	return cctx;
603	}	782	}
604		783
605	static void	784	static void
606	cctx_free (coro_cctx *cctx)	785	cctx_destroy (coro_cctx *cctx)
607	{	786	{
608	if (!cctx)	787	if (!cctx)
609	return;	788	return;
610		789
611	--cctx_count;	790	--cctx_count;
612		791
613	#if USE_VALGRIND	792	#if CORO_USE_VALGRIND
614	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	793	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
615	#endif	794	#endif
616		795
617	#if HAVE_MMAP	796	#if HAVE_MMAP
		797	if (cctx->flags & CC_MAPPED)
618	munmap (cctx->sptr, cctx->ssize);	798	munmap (cctx->sptr, cctx->ssize);
619	#else	799	else
		800	#endif
620	Safefree (cctx->sptr);	801	Safefree (cctx->sptr);
621	#endif
622		802
623	Safefree (cctx);	803	Safefree (cctx);
624	}	804	}
625		805
626	static coro_cctx *	806	static coro_cctx *
627	cctx_get ()	807	cctx_get (pTHX)
628	{	808	{
629	coro_cctx *cctx;
630
631	if (cctx_first)	809	while (cctx_first)
632	{	810	{
		811	coro_cctx *cctx = cctx_first;
		812	cctx_first = cctx->next;
633	--cctx_idle;	813	--cctx_idle;
634	cctx = cctx_first;	814
635	cctx_first = cctx->next;	815	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
636	}	816	return cctx;
637	else	817
638	{	818	cctx_destroy (cctx);
639	cctx = cctx_new ();
640	PL_op = PL_op->op_next;
641	}	819	}
642		820
643	return cctx;	821	return cctx_new ();
644	}	822	}
645		823
646	static void	824	static void
647	cctx_put (coro_cctx *cctx)	825	cctx_put (coro_cctx *cctx)
648	{	826	{
		827	/* free another cctx if overlimit */
		828	if (cctx_idle >= MAX_IDLE_CCTX)
		829	{
		830	coro_cctx *first = cctx_first;
		831	cctx_first = first->next;
		832	--cctx_idle;
		833
		834	cctx_destroy (first);
		835	}
		836
649	++cctx_idle;	837	++cctx_idle;
650	cctx->next = cctx_first;	838	cctx->next = cctx_first;
651	cctx_first = cctx;	839	cctx_first = cctx;
652	}	840	}
653		841
		842	/ coroutine switching ***************************************************/
		843
654	/* never call directly, always through the coro_state_transfer global variable */	844	/* never call directly, always through the coro_state_transfer global variable */
655	static void NOINLINE	845	static void NOINLINE
656	transfer (struct coro prev, struct coro next, int flags)	846	transfer (pTHX_ struct coro prev, struct coro next)
657	{	847	{
658	dSTACKLEVEL;	848	dSTACKLEVEL;
659		849
660	/* sometimes transfer is only called to set idle_sp */	850	/* sometimes transfer is only called to set idle_sp */
661	if (flags == TRANSFER_SET_STACKLEVEL)	851	if (!next)
		852	{
662	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	853	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		854	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		855	}
663	else if (prev != next)	856	else if (prev != next)
664	{	857	{
665	coro_cctx *prev__cctx;	858	coro_cctx *prev__cctx;
666		859
		860	if (prev->flags & CF_NEW)
		861	{
		862	/* create a new empty context */
		863	Newz (0, prev->cctx, 1, coro_cctx);
		864	prev->flags &= ~CF_NEW;
		865	prev->flags \|= CF_RUNNING;
		866	}
		867
		868	/TODO: must not croak here /
		869	if (!prev->flags & CF_RUNNING)
		870	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		871
		872	if (next->flags & CF_RUNNING)
		873	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		874
		875	if (next->flags & CF_DESTROYED)
		876	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		877
		878	prev->flags &= ~CF_RUNNING;
		879	next->flags \|= CF_RUNNING;
		880
667	LOCK;	881	LOCK;
668		882
669	if (next->mainstack)	883	if (next->flags & CF_NEW)
670	{	884	{
671	/* coroutine already started */	885	/* need to start coroutine */
672	SAVE (prev, flags);	886	next->flags &= ~CF_NEW;
673	LOAD (next);	887	/* first get rid of the old state */
		888	save_perl (aTHX_ prev);
		889	/* setup coroutine call */
		890	setup_coro (aTHX_ next);
674	}	891	}
675	else	892	else
676	{	893	{
677	/* need to start coroutine */	894	/* coroutine already started */
678	/* first get rid of the old state */	895	save_perl (aTHX_ prev);
679	SAVE (prev, -1);	896	load_perl (aTHX_ next);
680	/* setup coroutine call */
681	setup_coro (next);
682	/* need a stack */
683	next->cctx = 0;
684	}	897	}
685
686	if (!prev->cctx)
687	/* create a new empty context */
688	Newz (0, prev->cctx, 1, coro_cctx);
689		898
690	prev__cctx = prev->cctx;	899	prev__cctx = prev->cctx;
691		900
692	/* possibly "free" the cctx */	901	/* possibly "free" the cctx */
693	if (prev__cctx->idle_sp == STACKLEVEL)	902	if (prev__cctx->idle_sp == STACKLEVEL)
694	{	903	{
		904	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		905	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		906
		907	prev->cctx = 0;
		908
695	cctx_put (prev__cctx);	909	cctx_put (prev__cctx);
696	prev->cctx = 0;
697	}	910	}
698		911
699	if (!next->cctx)	912	if (!next->cctx)
700	next->cctx = cctx_get ();	913	next->cctx = cctx_get (aTHX);
701		914
702	if (prev__cctx != next->cctx)	915	if (prev__cctx != next->cctx)
703	{	916	{
704	prev__cctx->top_env = PL_top_env;	917	prev__cctx->top_env = PL_top_env;
705	PL_top_env = next->cctx->top_env;	918	PL_top_env = next->cctx->top_env;
706	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	919	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
707	}	920	}
708		921
709	free_coro_mortal ();	922	free_coro_mortal (aTHX);
710
711	UNLOCK;	923	UNLOCK;
712	}	924	}
713	}	925	}
714		926
715	struct transfer_args	927	struct transfer_args
716	{	928	{
717	struct coro prev, next;	929	struct coro prev, next;
718	int flags;
719	};	930	};
720		931
721	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	932	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
722		933
		934	/ high level stuff ******************************************************/
		935
723	static void	936	static int
724	coro_state_destroy (struct coro *coro)	937	coro_state_destroy (pTHX_ struct coro *coro)
725	{	938	{
726	if (coro->refcnt--)	939	if (coro->flags & CF_DESTROYED)
727	return;	940	return 0;
		941
		942	coro->flags \|= CF_DESTROYED;
		943
		944	if (coro->flags & CF_READY)
		945	{
		946	/* reduce nready, as destroying a ready coro effectively unreadies it */
		947	/* alternative: look through all ready queues and remove the coro */
		948	LOCK;
		949	--coro_nready;
		950	UNLOCK;
		951	}
		952	else
		953	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
728		954
729	if (coro->mainstack && coro->mainstack != main_mainstack)	955	if (coro->mainstack && coro->mainstack != main_mainstack)
730	{	956	{
731	struct coro temp;	957	struct coro temp;
732		958
733	SAVE ((&temp), TRANSFER_SAVE_ALL);	959	assert (!(coro->flags & CF_RUNNING));
734	LOAD (coro);
735		960
		961	Zero (&temp, 1, struct coro);
		962	temp.save = CORO_SAVE_ALL;
		963
		964	if (coro->flags & CF_RUNNING)
		965	croak ("FATAL: tried to destroy currently running coroutine");
		966
		967	save_perl (aTHX_ &temp);
		968	load_perl (aTHX_ coro);
		969
736	coro_destroy_stacks ();	970	coro_destroy_stacks (aTHX);
737		971
738	LOAD ((&temp)); /* this will get rid of defsv etc.. */	972	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
739		973
740	coro->mainstack = 0;	974	coro->mainstack = 0;
741	}	975	}
742		976
743	cctx_free (coro->cctx);	977	cctx_destroy (coro->cctx);
744	SvREFCNT_dec (coro->args);	978	SvREFCNT_dec (coro->args);
745	Safefree (coro);	979
		980	if (coro->next) coro->next->prev = coro->prev;
		981	if (coro->prev) coro->prev->next = coro->next;
		982	if (coro == coro_first) coro_first = coro->next;
		983
		984	return 1;
746	}	985	}
747		986
748	static int	987	static int
749	coro_state_clear (pTHX_ SV sv, MAGIC mg)	988	coro_state_free (pTHX_ SV sv, MAGIC mg)
750	{	989	{
751	struct coro coro = (struct coro )mg->mg_ptr;	990	struct coro coro = (struct coro )mg->mg_ptr;
752	mg->mg_ptr = 0;	991	mg->mg_ptr = 0;
753		992
		993	coro->hv = 0;
		994
		995	if (--coro->refcnt < 0)
		996	{
754	coro_state_destroy (coro);	997	coro_state_destroy (aTHX_ coro);
		998	Safefree (coro);
		999	}
755		1000
756	return 0;	1001	return 0;
757	}	1002	}
758		1003
759	static int	1004	static int
…		…
766	return 0;	1011	return 0;
767	}	1012	}
768		1013
769	static MGVTBL coro_state_vtbl = {	1014	static MGVTBL coro_state_vtbl = {
770	0, 0, 0, 0,	1015	0, 0, 0, 0,
771	coro_state_clear,	1016	coro_state_free,
772	0,	1017	0,
773	#ifdef MGf_DUP	1018	#ifdef MGf_DUP
774	coro_state_dup,	1019	coro_state_dup,
775	#else	1020	#else
776	# define MGf_DUP 0	1021	# define MGf_DUP 0
777	#endif	1022	#endif
778	};	1023	};
779		1024
780	static struct coro *	1025	static struct coro *
781	SvSTATE (SV *coro)	1026	SvSTATE_ (pTHX_ SV *coro)
782	{	1027	{
783	HV *stash;	1028	HV *stash;
784	MAGIC *mg;	1029	MAGIC *mg;
785		1030
786	if (SvROK (coro))	1031	if (SvROK (coro))
…		…
792	/* very slow, but rare, check */	1037	/* very slow, but rare, check */
793	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1038	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
794	croak ("Coro::State object required");	1039	croak ("Coro::State object required");
795	}	1040	}
796		1041
797	mg = SvMAGIC (coro);	1042	mg = CORO_MAGIC (coro);
798	assert (mg->mg_type == PERL_MAGIC_ext);
799	return (struct coro *)mg->mg_ptr;	1043	return (struct coro *)mg->mg_ptr;
800	}	1044	}
801		1045
		1046	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1047
802	static void	1048	static void
803	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1049	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
804	{	1050	{
805	ta->prev = SvSTATE (prev);	1051	ta->prev = SvSTATE (prev_sv);
806	ta->next = SvSTATE (next);	1052	ta->next = SvSTATE (next_sv);
807	ta->flags = flags;
808	}	1053	}
809		1054
810	static void	1055	static void
811	api_transfer (SV prev, SV next, int flags)	1056	api_transfer (SV prev_sv, SV next_sv)
812	{	1057	{
813	dTHX;	1058	dTHX;
814	struct transfer_args ta;	1059	struct transfer_args ta;
815		1060
816	prepare_transfer (&ta, prev, next, flags);	1061	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
817	TRANSFER (ta);	1062	TRANSFER (ta);
818	}	1063	}
819		1064
		1065	static int
		1066	api_save (SV *coro_sv, int new_save)
		1067	{
		1068	dTHX;
		1069	struct coro *coro = SvSTATE (coro_sv);
		1070	int old_save = coro->save;
		1071
		1072	if (new_save >= 0)
		1073	coro->save = new_save;
		1074
		1075	return old_save;
		1076	}
		1077
820	/ Coro ******************************************************************/	1078	/ Coro ******************************************************************/
821		1079
822	#define PRIO_MAX 3
823	#define PRIO_HIGH 1
824	#define PRIO_NORMAL 0
825	#define PRIO_LOW -1
826	#define PRIO_IDLE -3
827	#define PRIO_MIN -4
828
829	/* for Coro.pm */
830	static GV coro_current, coro_idle;
831	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
832	static int coro_nready;
833
834	static void	1080	static void
835	coro_enq (SV *sv)	1081	coro_enq (pTHX_ SV *coro_sv)
836	{	1082	{
837	int prio;
838
839	if (SvTYPE (sv) != SVt_PVHV)
840	croak ("Coro::ready tried to enqueue something that is not a coroutine");
841
842	prio = SvSTATE (sv)->prio;
843
844	av_push (coro_ready [prio - PRIO_MIN], sv);	1083	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
845	coro_nready++;
846	}	1084	}
847		1085
848	static SV *	1086	static SV *
849	coro_deq (int min_prio)	1087	coro_deq (pTHX_ int min_prio)
850	{	1088	{
851	int prio = PRIO_MAX - PRIO_MIN;	1089	int prio = PRIO_MAX - PRIO_MIN;
852		1090
853	min_prio -= PRIO_MIN;	1091	min_prio -= PRIO_MIN;
854	if (min_prio < 0)	1092	if (min_prio < 0)
855	min_prio = 0;	1093	min_prio = 0;
856		1094
857	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1095	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
858	if (AvFILLp (coro_ready [prio]) >= 0)	1096	if (AvFILLp (coro_ready [prio]) >= 0)
859	{
860	coro_nready--;
861	return av_shift (coro_ready [prio]);	1097	return av_shift (coro_ready [prio]);
862	}
863		1098
864	return 0;	1099	return 0;
865	}	1100	}
866		1101
867	static void	1102	static int
868	api_ready (SV *coro)	1103	api_ready (SV *coro_sv)
869	{	1104	{
870	dTHX;	1105	dTHX;
		1106	struct coro *coro;
871		1107
872	if (SvROK (coro))	1108	if (SvROK (coro_sv))
873	coro = SvRV (coro);	1109	coro_sv = SvRV (coro_sv);
		1110
		1111	coro = SvSTATE (coro_sv);
		1112
		1113	if (coro->flags & CF_READY)
		1114	return 0;
		1115
		1116	coro->flags \|= CF_READY;
874		1117
875	LOCK;	1118	LOCK;
876	coro_enq (SvREFCNT_inc (coro));	1119	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1120	++coro_nready;
877	UNLOCK;	1121	UNLOCK;
878	}
879		1122
		1123	return 1;
		1124	}
		1125
880	static void	1126	static int
		1127	api_is_ready (SV *coro_sv)
		1128	{
		1129	dTHX;
		1130	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1131	}
		1132
		1133	static void
881	prepare_schedule (struct transfer_args *ta)	1134	prepare_schedule (pTHX_ struct transfer_args *ta)
882	{	1135	{
883	SV current, prev, *next;	1136	SV prev_sv, next_sv;
884
885	current = GvSV (coro_current);
886		1137
887	for (;;)	1138	for (;;)
888	{	1139	{
889	LOCK;	1140	LOCK;
890	next = coro_deq (PRIO_MIN);	1141	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1142
		1143	/* nothing to schedule: call the idle handler */
		1144	if (!next_sv)
		1145	{
		1146	dSP;
		1147	UNLOCK;
		1148
		1149	ENTER;
		1150	SAVETMPS;
		1151
		1152	PUSHMARK (SP);
		1153	PUTBACK;
		1154	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1155
		1156	FREETMPS;
		1157	LEAVE;
		1158	continue;
		1159	}
		1160
		1161	ta->next = SvSTATE (next_sv);
		1162
		1163	/* cannot transfer to destroyed coros, skip and look for next */
		1164	if (ta->next->flags & CF_DESTROYED)
		1165	{
		1166	UNLOCK;
		1167	SvREFCNT_dec (next_sv);
		1168	/* coro_nready is already taken care of by destroy */
		1169	continue;
		1170	}
		1171
		1172	--coro_nready;
891	UNLOCK;	1173	UNLOCK;
892
893	if (next)
894	break;	1174	break;
895
896	{
897	dSP;
898
899	ENTER;
900	SAVETMPS;
901
902	PUSHMARK (SP);
903	PUTBACK;
904	call_sv (GvSV (coro_idle), G_DISCARD);
905
906	FREETMPS;
907	LEAVE;
908	}	1175	}
909	}
910
911	prev = SvRV (current);
912	SvRV (current) = next;
913		1176
914	/* free this only after the transfer */	1177	/* free this only after the transfer */
		1178	prev_sv = SvRV (coro_current);
		1179	SvRV_set (coro_current, next_sv);
		1180	ta->prev = SvSTATE (prev_sv);
		1181
		1182	assert (ta->next->flags & CF_READY);
		1183	ta->next->flags &= ~CF_READY;
		1184
915	LOCK;	1185	LOCK;
916	free_coro_mortal ();	1186	free_coro_mortal (aTHX);
		1187	coro_mortal = prev_sv;
917	UNLOCK;	1188	UNLOCK;
918	coro_mortal = prev;
919
920	ta->prev = SvSTATE (prev);
921	ta->next = SvSTATE (next);
922	ta->flags = TRANSFER_SAVE_ALL;
923	}	1189	}
924		1190
925	static void	1191	static void
926	prepare_cede (struct transfer_args *ta)	1192	prepare_cede (pTHX_ struct transfer_args *ta)
927	{	1193	{
928	LOCK;	1194	api_ready (coro_current);
929	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
930	UNLOCK;
931
932	prepare_schedule (ta);	1195	prepare_schedule (aTHX_ ta);
		1196	}
		1197
		1198	static int
		1199	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1200	{
		1201	if (coro_nready)
		1202	{
		1203	SV *prev = SvRV (coro_current);
		1204	prepare_schedule (aTHX_ ta);
		1205	api_ready (prev);
		1206	return 1;
		1207	}
		1208	else
		1209	return 0;
933	}	1210	}
934		1211
935	static void	1212	static void
936	api_schedule (void)	1213	api_schedule (void)
937	{	1214	{
938	dTHX;	1215	dTHX;
939	struct transfer_args ta;	1216	struct transfer_args ta;
940		1217
941	prepare_schedule (&ta);	1218	prepare_schedule (aTHX_ &ta);
942	TRANSFER (ta);	1219	TRANSFER (ta);
943	}	1220	}
944		1221
945	static void	1222	static int
946	api_cede (void)	1223	api_cede (void)
947	{	1224	{
948	dTHX;	1225	dTHX;
949	struct transfer_args ta;	1226	struct transfer_args ta;
950		1227
951	prepare_cede (&ta);	1228	prepare_cede (aTHX_ &ta);
		1229
		1230	if (ta.prev != ta.next)
		1231	{
952	TRANSFER (ta);	1232	TRANSFER (ta);
		1233	return 1;
		1234	}
		1235	else
		1236	return 0;
		1237	}
		1238
		1239	static int
		1240	api_cede_notself (void)
		1241	{
		1242	dTHX;
		1243	struct transfer_args ta;
		1244
		1245	if (prepare_cede_notself (aTHX_ &ta))
		1246	{
		1247	TRANSFER (ta);
		1248	return 1;
		1249	}
		1250	else
		1251	return 0;
953	}	1252	}
954		1253
955	MODULE = Coro::State PACKAGE = Coro::State	1254	MODULE = Coro::State PACKAGE = Coro::State
956		1255
957	PROTOTYPES: DISABLE	1256	PROTOTYPES: DISABLE
…		…
963	#endif	1262	#endif
964	BOOT_PAGESIZE;	1263	BOOT_PAGESIZE;
965		1264
966	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1265	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
967		1266
968	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1267	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
969	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1268	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
970	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1269	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1270	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1271	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1272	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1273	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
971		1274
972	main_mainstack = PL_mainstack;	1275	main_mainstack = PL_mainstack;
		1276	main_top_env = PL_top_env;
		1277
		1278	while (main_top_env->je_prev)
		1279	main_top_env = main_top_env->je_prev;
973		1280
974	coroapi.ver = CORO_API_VERSION;	1281	coroapi.ver = CORO_API_VERSION;
975	coroapi.transfer = api_transfer;	1282	coroapi.transfer = api_transfer;
976		1283
977	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1284	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
985	HV *hv;	1292	HV *hv;
986	int i;	1293	int i;
987		1294
988	Newz (0, coro, 1, struct coro);	1295	Newz (0, coro, 1, struct coro);
989	coro->args = newAV ();	1296	coro->args = newAV ();
		1297	coro->save = CORO_SAVE_DEF;
		1298	coro->flags = CF_NEW;
990		1299
		1300	if (coro_first) coro_first->prev = coro;
		1301	coro->next = coro_first;
		1302	coro_first = coro;
		1303
991	hv = newHV ();	1304	coro->hv = hv = newHV ();
992	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1305	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
993	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1306	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
994		1307
995	for (i = 1; i < items; i++)	1308	for (i = 1; i < items; i++)
996	av_push (coro->args, newSVsv (ST (i)));	1309	av_push (coro->args, newSVsv (ST (i)));
997	}	1310	}
998	OUTPUT:	1311	OUTPUT:
		1312	RETVAL
		1313
		1314	int
		1315	save (SV *coro, int new_save = -1)
		1316	CODE:
		1317	RETVAL = api_save (coro, new_save);
		1318	OUTPUT:
		1319	RETVAL
		1320
		1321	int
		1322	save_also (SV *coro_sv, int save_also)
		1323	CODE:
		1324	{
		1325	struct coro *coro = SvSTATE (coro_sv);
		1326	RETVAL = coro->save;
		1327	coro->save \|= save_also;
		1328	}
		1329	OUTPUT:
999	RETVAL	1330	RETVAL
1000		1331
1001	void	1332	void
1002	_set_stacklevel (...)	1333	_set_stacklevel (...)
1003	ALIAS:	1334	ALIAS:
1004	Coro::State::transfer = 1	1335	Coro::State::transfer = 1
1005	Coro::schedule = 2	1336	Coro::schedule = 2
1006	Coro::cede = 3	1337	Coro::cede = 3
1007	Coro::Cont::yield = 4	1338	Coro::cede_notself = 4
1008	CODE:	1339	CODE:
1009	{	1340	{
1010	struct transfer_args ta;	1341	struct transfer_args ta;
1011		1342
1012	switch (ix)	1343	switch (ix)
1013	{	1344	{
1014	case 0:	1345	case 0:
1015	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1346	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1016	ta.next = 0;	1347	ta.next = 0;
1017	ta.flags = TRANSFER_SET_STACKLEVEL;
1018	break;	1348	break;
1019		1349
1020	case 1:	1350	case 1:
1021	if (items != 3)	1351	if (items != 2)
1022	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1352	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1023		1353
1024	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1354	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1025	break;	1355	break;
1026		1356
1027	case 2:	1357	case 2:
1028	prepare_schedule (&ta);	1358	prepare_schedule (aTHX_ &ta);
1029	break;	1359	break;
1030		1360
1031	case 3:	1361	case 3:
1032	prepare_cede (&ta);	1362	prepare_cede (aTHX_ &ta);
1033	break;	1363	break;
1034		1364
1035	case 4:	1365	case 4:
1036	{	1366	if (!prepare_cede_notself (aTHX_ &ta))
1037	SV *yieldstack;	1367	XSRETURN_EMPTY;
1038	SV *sv;
1039	AV *defav = GvAV (PL_defgv);
1040		1368
1041	yieldstack = *hv_fetch (
1042	(HV *)SvRV (GvSV (coro_current)),
1043	"yieldstack", sizeof ("yieldstack") - 1,
1044	0
1045	);
1046
1047	/* set up @_ -- ugly */
1048	av_clear (defav);
1049	av_fill (defav, items - 1);
1050	while (items--)
1051	av_store (defav, items, SvREFCNT_inc (ST(items)));
1052
1053	sv = av_pop ((AV *)SvRV (yieldstack));
1054	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1055	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1056	ta.flags = 0;
1057	SvREFCNT_dec (sv);
1058	}
1059	break;	1369	break;
1060
1061	}	1370	}
1062		1371
		1372	BARRIER;
1063	TRANSFER (ta);	1373	TRANSFER (ta);
1064	}
1065		1374
1066	void	1375	if (GIMME_V != G_VOID && ta.next != ta.prev)
1067	_clone_state_from (SV dst, SV src)	1376	XSRETURN_YES;
		1377	}
		1378
		1379	bool
		1380	_destroy (SV *coro_sv)
1068	CODE:	1381	CODE:
1069	{	1382	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1070	struct coro *coro_src = SvSTATE (src);	1383	OUTPUT:
1071		1384	RETVAL
1072	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1073
1074	++coro_src->refcnt;
1075	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1076	}
1077		1385
1078	void	1386	void
1079	_exit (code)	1387	_exit (code)
1080	int code	1388	int code
1081	PROTOTYPE: $	1389	PROTOTYPE: $
1082	CODE:	1390	CODE:
1083	_exit (code);	1391	_exit (code);
1084		1392
1085	int	1393	int
		1394	cctx_stacksize (int new_stacksize = 0)
		1395	CODE:
		1396	RETVAL = coro_stacksize;
		1397	if (new_stacksize)
		1398	coro_stacksize = new_stacksize;
		1399	OUTPUT:
		1400	RETVAL
		1401
		1402	int
1086	cctx_count ()	1403	cctx_count ()
1087	CODE:	1404	CODE:
1088	RETVAL = cctx_count;	1405	RETVAL = cctx_count;
1089	OUTPUT:	1406	OUTPUT:
1090	RETVAL	1407	RETVAL
…		…
1094	CODE:	1411	CODE:
1095	RETVAL = cctx_idle;	1412	RETVAL = cctx_idle;
1096	OUTPUT:	1413	OUTPUT:
1097	RETVAL	1414	RETVAL
1098		1415
		1416	void
		1417	list ()
		1418	PPCODE:
		1419	{
		1420	struct coro *coro;
		1421	for (coro = coro_first; coro; coro = coro->next)
		1422	if (coro->hv)
		1423	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1424	}
		1425
		1426	void
		1427	call (Coro::State coro, SV *coderef)
		1428	ALIAS:
		1429	eval = 1
		1430	CODE:
		1431	{
		1432	if (coro->mainstack)
		1433	{
		1434	struct coro temp;
		1435	Zero (&temp, 1, struct coro);
		1436	temp.save = CORO_SAVE_ALL;
		1437
		1438	if (!(coro->flags & CF_RUNNING))
		1439	{
		1440	save_perl (aTHX_ &temp);
		1441	load_perl (aTHX_ coro);
		1442	}
		1443
		1444	{
		1445	dSP;
		1446	ENTER;
		1447	SAVETMPS;
		1448	PUSHMARK (SP);
		1449	PUTBACK;
		1450	if (ix)
		1451	eval_sv (coderef, 0);
		1452	else
		1453	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1454	SPAGAIN;
		1455	FREETMPS;
		1456	LEAVE;
		1457	PUTBACK;
		1458	}
		1459
		1460	if (!(coro->flags & CF_RUNNING))
		1461	{
		1462	save_perl (aTHX_ coro);
		1463	load_perl (aTHX_ &temp);
		1464	}
		1465	}
		1466	}
		1467
		1468	SV *
		1469	is_ready (Coro::State coro)
		1470	PROTOTYPE: $
		1471	ALIAS:
		1472	is_ready = CF_READY
		1473	is_running = CF_RUNNING
		1474	is_new = CF_NEW
		1475	is_destroyed = CF_DESTROYED
		1476	CODE:
		1477	RETVAL = boolSV (coro->flags & ix);
		1478	OUTPUT:
		1479	RETVAL
		1480
		1481	void
		1482	trace (Coro::State coro, int enable = 0)
		1483	CODE:
		1484	if (enable)
		1485	{
		1486	if (coro->flags & CF_RUNNING)
		1487	croak ("cannot enable tracing on running coroutine");
		1488
		1489	if (coro->cctx)
		1490	croak ("cannot enable tracing on coroutine with custom stack");
		1491
		1492	coro->cctx = cctx_new ();
		1493	coro->cctx->flags \|= CC_TRACE;
		1494	}
		1495	else
		1496	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1497	{
		1498	coro->cctx->flags &= ~CC_TRACE;
		1499	coro->cctx->flags \|= CC_NOREUSE;
		1500	}
		1501
		1502	SV *
		1503	has_stack (Coro::State coro)
		1504	PROTOTYPE: $
		1505	CODE:
		1506	RETVAL = boolSV (!!coro->cctx);
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	IV
		1511	rss (Coro::State coro)
		1512	PROTOTYPE: $
		1513	CODE:
		1514	RETVAL = coro_rss (coro);
		1515	OUTPUT:
		1516	RETVAL
		1517
		1518
1099	MODULE = Coro::State PACKAGE = Coro	1519	MODULE = Coro::State PACKAGE = Coro
1100		1520
1101	BOOT:	1521	BOOT:
1102	{	1522	{
1103	int i;	1523	int i;
		1524
		1525	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1526	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1527	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1528
		1529	coro_current = get_sv ("Coro::current", FALSE);
		1530	SvREADONLY_on (coro_current);
1104		1531
1105	coro_stash = gv_stashpv ("Coro", TRUE);	1532	coro_stash = gv_stashpv ("Coro", TRUE);
1106		1533
1107	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1534	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1108	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1535	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1109	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1536	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1110	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1537	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1111	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1538	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1112	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1539	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1113		1540
1114	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1115	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1116
1117	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1541	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1118	coro_ready[i] = newAV ();	1542	coro_ready[i] = newAV ();
1119		1543
1120	{	1544	{
1121	SV *sv = perl_get_sv("Coro::API", 1);	1545	SV *sv = perl_get_sv("Coro::API", 1);
1122		1546
1123	coroapi.schedule = api_schedule;	1547	coroapi.schedule = api_schedule;
		1548	coroapi.save = api_save;
1124	coroapi.cede = api_cede;	1549	coroapi.cede = api_cede;
		1550	coroapi.cede_notself = api_cede_notself;
1125	coroapi.ready = api_ready;	1551	coroapi.ready = api_ready;
		1552	coroapi.is_ready = api_is_ready;
1126	coroapi.nready = &coro_nready;	1553	coroapi.nready = &coro_nready;
1127	coroapi.current = coro_current;	1554	coroapi.current = coro_current;
1128		1555
1129	GCoroAPI = &coroapi;	1556	GCoroAPI = &coroapi;
1130	sv_setiv (sv, (IV)&coroapi);	1557	sv_setiv (sv, (IV)&coroapi);
1131	SvREADONLY_on (sv);	1558	SvREADONLY_on (sv);
1132	}	1559	}
1133	}	1560	}
		1561
		1562	void
		1563	_set_current (SV *current)
		1564	PROTOTYPE: $
		1565	CODE:
		1566	SvREFCNT_dec (SvRV (coro_current));
		1567	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1134		1568
1135	int	1569	int
1136	prio (Coro::State coro, int newprio = 0)	1570	prio (Coro::State coro, int newprio = 0)
1137	ALIAS:	1571	ALIAS:
1138	nice = 1	1572	nice = 1
…		…
1141	RETVAL = coro->prio;	1575	RETVAL = coro->prio;
1142		1576
1143	if (items > 1)	1577	if (items > 1)
1144	{	1578	{
1145	if (ix)	1579	if (ix)
1146	newprio += coro->prio;	1580	newprio = coro->prio - newprio;
1147		1581
1148	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1582	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1149	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1583	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1150		1584
1151	coro->prio = newprio;	1585	coro->prio = newprio;
1152	}	1586	}
1153	}	1587	}
		1588	OUTPUT:
		1589	RETVAL
1154		1590
1155	void	1591	SV *
1156	ready (SV *self)	1592	ready (SV *self)
1157	PROTOTYPE: $	1593	PROTOTYPE: $
1158	CODE:	1594	CODE:
1159	api_ready (self);	1595	RETVAL = boolSV (api_ready (self));
		1596	OUTPUT:
		1597	RETVAL
1160		1598
1161	int	1599	int
1162	nready (...)	1600	nready (...)
1163	PROTOTYPE:	1601	PROTOTYPE:
1164	CODE:	1602	CODE:
1165	RETVAL = coro_nready;	1603	RETVAL = coro_nready;
1166	OUTPUT:	1604	OUTPUT:
1167	RETVAL	1605	RETVAL
1168		1606
		1607	# for async_pool speedup
		1608	void
		1609	_pool_1 (SV *cb)
		1610	CODE:
		1611	{
		1612	int i, len;
		1613	HV hv = (HV )SvRV (coro_current);
		1614	AV *defav = GvAV (PL_defgv);
		1615	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1616	AV *invoke_av;
		1617
		1618	if (!invoke)
		1619	croak ("\3terminate\2\n");
		1620
		1621	hv_store (hv, "desc", sizeof ("desc") - 1,
		1622	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1623
		1624	invoke_av = (AV *)SvRV (invoke);
		1625	len = av_len (invoke_av);
		1626
		1627	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1628
		1629	if (len > 0)
		1630	{
		1631	av_fill (defav, len - 1);
		1632	for (i = 0; i < len; ++i)
		1633	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1634	}
		1635
		1636	SvREFCNT_dec (invoke);
		1637	}
		1638
		1639	void
		1640	_pool_2 (SV *cb)
		1641	CODE:
		1642	{
		1643	struct coro *coro = SvSTATE (coro_current);
		1644
		1645	sv_setsv (cb, &PL_sv_undef);
		1646
		1647	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1648	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1649	croak ("\3terminate\2\n");
		1650
		1651	av_clear (GvAV (PL_defgv));
		1652	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1653	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1654	coro->save = CORO_SAVE_DEF;
		1655	coro->prio = 0;
		1656	av_push (av_async_pool, newSVsv (coro_current));
		1657	}
		1658
		1659
1169	MODULE = Coro::State PACKAGE = Coro::AIO	1660	MODULE = Coro::State PACKAGE = Coro::AIO
1170		1661
1171	SV *	1662	SV *
1172	_get_state ()	1663	_get_state ()
1173	CODE:	1664	CODE:
1174	{	1665	{
1175	struct {	1666	struct io_state *data;
1176	int errorno;
1177	int laststype;
1178	int laststatval;
1179	Stat_t statcache;
1180	} data;
1181		1667
		1668	RETVAL = newSV (sizeof (struct io_state));
		1669	data = (struct io_state *)SvPVX (RETVAL);
		1670	SvCUR_set (RETVAL, sizeof (struct io_state));
		1671	SvPOK_only (RETVAL);
		1672
1182	data.errorno = errno;	1673	data->errorno = errno;
1183	data.laststype = PL_laststype;	1674	data->laststype = PL_laststype;
1184	data.laststatval = PL_laststatval;	1675	data->laststatval = PL_laststatval;
1185	data.statcache = PL_statcache;	1676	data->statcache = PL_statcache;
1186
1187	RETVAL = newSVpvn ((char *)&data, sizeof data);
1188	}	1677	}
1189	OUTPUT:	1678	OUTPUT:
1190	RETVAL	1679	RETVAL
1191		1680
1192	void	1681	void
1193	_set_state (char *data_)	1682	_set_state (char *data_)
1194	PROTOTYPE: $	1683	PROTOTYPE: $
1195	CODE:	1684	CODE:
1196	{	1685	{
1197	struct {	1686	struct io_state data = (void )data_;
1198	int errorno;
1199	int laststype;
1200	int laststatval;
1201	Stat_t statcache;
1202	} data = (void )data_;
1203		1687
1204	errno = data->errorno;	1688	errno = data->errorno;
1205	PL_laststype = data->laststype;	1689	PL_laststype = data->laststype;
1206	PL_laststatval = data->laststatval;	1690	PL_laststatval = data->laststatval;
1207	PL_statcache = data->statcache;	1691	PL_statcache = data->statcache;
1208	}	1692	}
		1693

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Comparing Coro/Coro/State.xs (file contents): Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs. Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs.
Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC