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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.160 by root, Sat Sep 22 22:39:15 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 */
		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
		142	static struct coro_cctx *cctx_first;
		143	static int cctx_count, cctx_idle;
107		144
108	/* this is a structure representing a c-level coroutine */	145	/* this is a structure representing a c-level coroutine */
109	typedef struct coro_cctx {	146	typedef struct coro_cctx {
110	struct coro_cctx *next;	147	struct coro_cctx *next;
111		148
112	/* the stack */	149	/* the stack */
113	void *sptr;	150	void *sptr;
114	long ssize; /* positive == mmap, otherwise malloc */	151	size_t ssize;
115		152
116	/* cpu state */	153	/* cpu state */
117	void idle_sp; / sp of top-level transfer/schedule/cede call */	154	void idle_sp; / sp of top-level transfer/schedule/cede call */
		155	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
118	JMPENV *top_env;	156	JMPENV *top_env;
119	coro_context cctx;	157	coro_context cctx;
120		158
121	#if USE_VALGRIND	159	#if CORO_USE_VALGRIND
122	int valgrind_id;	160	int valgrind_id;
123	#endif	161	#endif
		162	char inuse, mapped;
124	} coro_cctx;	163	} coro_cctx;
		164
		165	enum {
		166	CF_RUNNING = 0x0001, /* coroutine is running */
		167	CF_READY = 0x0002, /* coroutine is ready */
		168	CF_NEW = 0x0004, /* has never been switched to */
		169	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		170	};
125		171
126	/* this is a structure representing a perl-level coroutine */	172	/* this is a structure representing a perl-level coroutine */
127	struct coro {	173	struct coro {
128	/* the c coroutine allocated to this perl coroutine, if any */	174	/* the c coroutine allocated to this perl coroutine, if any */
129	coro_cctx *cctx;	175	coro_cctx *cctx;
130		176
131	/* data associated with this coroutine (initial args) */	177	/* data associated with this coroutine (initial args) */
132	AV *args;	178	AV *args;
133	int refcnt;	179	int refcnt;
		180	int save; /* CORO_SAVE flags */
		181	int flags; /* CF_ flags */
134		182
135	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
136	AV *defav;	184	AV defav; / @_ */
137	SV *defsv;	185	SV defsv; / $_ */
138	SV *errsv;	186	SV errsv; / $@ */
		187	GV deffh; / default filehandle */
		188	SV irssv; / $/ */
		189	SV irssv_sv; / real $/ cache */
139		190
140	/* saved global state not related to stacks */	191	#define VAR(name,type) type name;
141	U8 dowarn;	192	# include "state.h"
142	I32 in_eval;	193	#undef VAR
143
144	/* the stacks and related info (callchain etc..) */
145	PERL_SI *curstackinfo;
146	AV *curstack;
147	AV *mainstack;
148	SV **stack_sp;
149	OP *op;
150	SV **curpad;
151	AV *comppad;
152	CV *compcv;
153	SV **stack_base;
154	SV **stack_max;
155	SV **tmps_stack;
156	I32 tmps_floor;
157	I32 tmps_ix;
158	I32 tmps_max;
159	I32 *markstack;
160	I32 *markstack_ptr;
161	I32 *markstack_max;
162	I32 *scopestack;
163	I32 scopestack_ix;
164	I32 scopestack_max;
165	ANY *savestack;
166	I32 savestack_ix;
167	I32 savestack_max;
168	OP **retstack;
169	I32 retstack_ix;
170	I32 retstack_max;
171	PMOP *curpm;
172	COP *curcop;
173		194
174	/* coro process data */	195	/* coro process data */
175	int prio;	196	int prio;
		197
		198	/* linked list */
		199	struct coro next, prev;
		200	HV hv; / the perl hash associated with this coro, if any */
176	};	201	};
177		202
178	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
180		205
		206	/ Coro ******************************************************************/
		207
		208	#define PRIO_MAX 3
		209	#define PRIO_HIGH 1
		210	#define PRIO_NORMAL 0
		211	#define PRIO_LOW -1
		212	#define PRIO_IDLE -3
		213	#define PRIO_MIN -4
		214
		215	/* for Coro.pm */
		216	static SV *coro_current;
		217	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		218	static int coro_nready;
		219	static struct coro *coro_first;
		220
		221	/ lowlevel stuff ********************************************************/
		222
181	static AV *	223	static AV *
182	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
183	{	225	{
184	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	227	AV newpadlist, newpad;
186		228
187	newpadlist = newAV ();	229	newpadlist = newAV ();
…		…
199		241
200	return newpadlist;	242	return newpadlist;
201	}	243	}
202		244
203	static void	245	static void
204	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
205	{	247	{
206	/* may be during global destruction */	248	/* may be during global destruction */
207	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
208	{	250	{
209	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	272	AV *padlist;
231	AV av = (AV )mg->mg_obj;	273	AV av = (AV )mg->mg_obj;
232		274
233	/* casting is fun. */	275	/* casting is fun. */
234	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
235	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
236		278
237	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
238		280
239	return 0;	281	return 0;
240	}	282	}
241		283
242	#define PERL_MAGIC_coro PERL_MAGIC_ext	284	#define PERL_MAGIC_coro PERL_MAGIC_ext
243		285
244	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	286	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
245		287
		288	#define CORO_MAGIC(cv) \
		289	SvMAGIC (cv) \
		290	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		291	? SvMAGIC (cv) \
		292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		293	: 0
		294
246	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
247	static void	296	static void
248	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
249	{	298	{
250	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	299	MAGIC *mg = CORO_MAGIC (cv);
		300	AV *av;
251		301
252	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
253	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
254	else	304	else
255	{	305	{
256	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
257	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
258	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
259	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
260	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
261	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
262	#else	312	#else
263	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
264	#endif	314	#endif
265	}	315	}
266	}	316	}
267		317
268	static void	318	static void
269	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
270	{	320	{
271	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	321	MAGIC *mg = CORO_MAGIC (cv);
		322	AV *av;
272		323
273	if (!mg)	324	if (!mg)
274	{	325	{
275	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	326	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
276	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	327	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
277	mg->mg_virtual = &vtbl_coro;	328	mg->mg_virtual = &vtbl_coro;
278	mg->mg_obj = (SV *)newAV ();	329	mg->mg_obj = (SV *)newAV ();
279	}	330	}
280		331
281	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	332	av = (AV *)mg->mg_obj;
		333
		334	if (AvFILLp (av) >= AvMAX (av))
		335	av_extend (av, AvMAX (av) + 1);
		336
		337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
282	}	338	}
		339
		340	/ load & save, init *****************************************************/
283		341
284	#define SB do {	342	#define SB do {
285	#define SE } while (0)	343	#define SE } while (0)
286		344
287	#define LOAD(state) load_state((state));
288	#define SAVE(state,flags) save_state((state),(flags));
289
290	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	345	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
291		346
292	static void	347	static void
293	load_state(Coro__State c)	348	load_perl (pTHX_ Coro__State c)
294	{	349	{
295	PL_dowarn = c->dowarn;	350	#define VAR(name,type) PL_ ## name = c->name;
296	PL_in_eval = c->in_eval;	351	# include "state.h"
297		352	#undef VAR
298	PL_curstackinfo = c->curstackinfo;
299	PL_curstack = c->curstack;
300	PL_mainstack = c->mainstack;
301	PL_stack_sp = c->stack_sp;
302	PL_op = c->op;
303	PL_curpad = c->curpad;
304	PL_comppad = c->comppad;
305	PL_compcv = c->compcv;
306	PL_stack_base = c->stack_base;
307	PL_stack_max = c->stack_max;
308	PL_tmps_stack = c->tmps_stack;
309	PL_tmps_floor = c->tmps_floor;
310	PL_tmps_ix = c->tmps_ix;
311	PL_tmps_max = c->tmps_max;
312	PL_markstack = c->markstack;
313	PL_markstack_ptr = c->markstack_ptr;
314	PL_markstack_max = c->markstack_max;
315	PL_scopestack = c->scopestack;
316	PL_scopestack_ix = c->scopestack_ix;
317	PL_scopestack_max = c->scopestack_max;
318	PL_savestack = c->savestack;
319	PL_savestack_ix = c->savestack_ix;
320	PL_savestack_max = c->savestack_max;
321	#if !PERL_VERSION_ATLEAST (5,9,0)
322	PL_retstack = c->retstack;
323	PL_retstack_ix = c->retstack_ix;
324	PL_retstack_max = c->retstack_max;
325	#endif
326	PL_curpm = c->curpm;
327	PL_curcop = c->curcop;
328		353
329	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
330	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
331	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	356	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		357	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		358
		359	if (c->irssv)
		360	{
		361	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		362	{
		363	SvREFCNT_dec (c->irssv);
		364	c->irssv = 0;
		365	}
		366	else
		367	{
		368	REPLACE_SV (PL_rs, c->irssv);
		369	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		370	sv_setsv (c->irssv_sv, PL_rs);
		371	}
		372	}
332		373
333	{	374	{
334	dSP;	375	dSP;
335	CV *cv;	376	CV *cv;
336		377
337	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
339	{	380	{
340	AV padlist = (AV )POPs;
341
342	if (padlist)
343	{
344	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
345	CvPADLIST(cv) = padlist;	382	CvDEPTH (cv) = PTR2IV (POPs);
346	}	383	CvPADLIST (cv) = (AV *)POPs;
347
348	++CvDEPTH(cv);
349	}	384	}
350		385
351	PUTBACK;	386	PUTBACK;
352	}	387	}
353	}	388	}
354		389
355	static void	390	static void
356	save_state(Coro__State c, int flags)	391	save_perl (pTHX_ Coro__State c)
357	{	392	{
358	{	393	{
359	dSP;	394	dSP;
360	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
361	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
364	/*	399	/*
365	* the worst thing you can imagine happens first - we have to save	400	* the worst thing you can imagine happens first - we have to save
366	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
367	*/	402	*/
368		403
369	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
370	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
371	for (;;)	406	for (;;)
372	{	407	{
373	while (cxix >= 0)	408	while (cxix >= 0)
374	{	409	{
375	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
376		411
377	if (CxTYPE(cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
378	{	413	{
379	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
		415
380	if (CvDEPTH(cv))	416	if (CvDEPTH (cv))
381	{	417	{
382	EXTEND (SP, CvDEPTH(cv)*2);	418	EXTEND (SP, 3);
383
384	while (--CvDEPTH(cv))
385	{
386	/* this tells the restore code to increment CvDEPTH */
387	PUSHs (Nullsv);
388	PUSHs ((SV *)cv);
389	}
390
391	PUSHs ((SV *)CvPADLIST(cv));	419	PUSHs ((SV *)CvPADLIST (cv));
		420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
392	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
393		422
		423	CvDEPTH (cv) = 0;
394	get_padlist (cv);	424	get_padlist (aTHX_ cv);
395	}	425	}
396	}	426	}
397	#ifdef CXt_FORMAT
398	else if (CxTYPE(cx) == CXt_FORMAT)
399	{
400	/* I never used formats, so how should I know how these are implemented? */
401	/* my bold guess is as a simple, plain sub... */
402	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
403	}
404	#endif
405	}	427	}
406		428
407	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
408	break;	430	break;
409		431
410	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
411	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
412	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
413	}	435	}
414		436
415	PUTBACK;	437	PUTBACK;
416	}	438	}
417		439
418	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	440	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
419	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	442	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		443	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		444	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
421		445
422	c->dowarn = PL_dowarn;	446	#define VAR(name,type)c->name = PL_ ## name;
423	c->in_eval = PL_in_eval;	447	# include "state.h"
424		448	#undef VAR
425	c->curstackinfo = PL_curstackinfo;
426	c->curstack = PL_curstack;
427	c->mainstack = PL_mainstack;
428	c->stack_sp = PL_stack_sp;
429	c->op = PL_op;
430	c->curpad = PL_curpad;
431	c->comppad = PL_comppad;
432	c->compcv = PL_compcv;
433	c->stack_base = PL_stack_base;
434	c->stack_max = PL_stack_max;
435	c->tmps_stack = PL_tmps_stack;
436	c->tmps_floor = PL_tmps_floor;
437	c->tmps_ix = PL_tmps_ix;
438	c->tmps_max = PL_tmps_max;
439	c->markstack = PL_markstack;
440	c->markstack_ptr = PL_markstack_ptr;
441	c->markstack_max = PL_markstack_max;
442	c->scopestack = PL_scopestack;
443	c->scopestack_ix = PL_scopestack_ix;
444	c->scopestack_max = PL_scopestack_max;
445	c->savestack = PL_savestack;
446	c->savestack_ix = PL_savestack_ix;
447	c->savestack_max = PL_savestack_max;
448	#if !PERL_VERSION_ATLEAST (5,9,0)
449	c->retstack = PL_retstack;
450	c->retstack_ix = PL_retstack_ix;
451	c->retstack_max = PL_retstack_max;
452	#endif
453	c->curpm = PL_curpm;
454	c->curcop = PL_curcop;
455	}	449	}
456		450
457	/*	451	/*
458	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
460	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
461	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
462	*/	456	*/
		457	#if CORO_PREFER_PERL_FUNCTIONS
		458	# define coro_init_stacks init_stacks
		459	#else
463	static void	460	static void
464	coro_init_stacks ()	461	coro_init_stacks (pTHX)
465	{	462	{
466	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	463	PL_curstackinfo = new_stackinfo(64, 6);
467	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
468	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
469	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
470		467
471	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
472	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
473	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
474		471
475	New(50,PL_tmps_stack,96,SV*);	472	New(50,PL_tmps_stack,64,SV*);
476	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
477	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
478	PL_tmps_max = 96;	475	PL_tmps_max = 64;
479		476
480	New(54,PL_markstack,16,I32);	477	New(54,PL_markstack,16,I32);
481	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
482	PL_markstack_max = PL_markstack + 16;	479	PL_markstack_max = PL_markstack + 16;
483		480
…		…
487		484
488	New(54,PL_scopestack,16,I32);	485	New(54,PL_scopestack,16,I32);
489	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
490	PL_scopestack_max = 16;	487	PL_scopestack_max = 16;
491		488
492	New(54,PL_savestack,96,ANY);	489	New(54,PL_savestack,64,ANY);
493	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
494	PL_savestack_max = 96;	491	PL_savestack_max = 64;
495		492
496	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
497	New(54,PL_retstack,8,OP*);	494	New(54,PL_retstack,4,OP*);
498	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
499	PL_retstack_max = 8;	496	PL_retstack_max = 4;
500	#endif	497	#endif
501	}	498	}
		499	#endif
502		500
503	/*	501	/*
504	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
505	*/	503	*/
506	static void	504	static void
507	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
508	{	506	{
509	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
510	{	508	{
511	/* is this ugly, I ask? */	509	/* restore all saved variables and stuff */
512	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
		511	assert (PL_tmps_floor == -1);
513		512
514	/* sure it is, but more important: is it correct?? :/ */	513	/* free all temporaries */
515	FREETMPS;	514	FREETMPS;
		515	assert (PL_tmps_ix == -1);
516		516
		517	/* unwind all extra stacks */
517	/POPSTACK_TO (PL_mainstack);//D//use/	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
518	}	522	}
519		523
520	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
522		526
523	while (PL_curstackinfo)	527	while (PL_curstackinfo)
524	{	528	{
525	PERL_SI *p = PL_curstackinfo->si_prev;	529	PERL_SI *p = PL_curstackinfo->si_prev;
526		530
527	{ /D//remove/
528	dSP;
529	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
530	PUTBACK; /* possibly superfluous */
531	}
532
533	if (!IN_DESTRUCT)	531	if (!IN_DESTRUCT)
534	{
535	dounwind (-1);/D//remove/
536	SvREFCNT_dec (PL_curstackinfo->si_stack);	532	SvREFCNT_dec (PL_curstackinfo->si_stack);
537	}
538		533
539	Safefree (PL_curstackinfo->si_cxstack);	534	Safefree (PL_curstackinfo->si_cxstack);
540	Safefree (PL_curstackinfo);	535	Safefree (PL_curstackinfo);
541	PL_curstackinfo = p;	536	PL_curstackinfo = p;
542	}	537	}
…		…
548	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
549	Safefree (PL_retstack);	544	Safefree (PL_retstack);
550	#endif	545	#endif
551	}	546	}
552		547
		548	static size_t
		549	coro_rss (struct coro *coro)
		550	{
		551	size_t rss = sizeof (coro);
		552
		553	if (coro->mainstack)
		554	{
		555	if (coro->flags & CF_RUNNING)
		556	{
		557	#define VAR(name,type)coro->name = PL_ ## name;
		558	# include "state.h"
		559	#undef VAR
		560	}
		561
		562	rss += sizeof (coro->curstackinfo);
		563	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		564	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		565	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		566	rss += coro->tmps_max * sizeof (SV *);
		567	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		568	rss += coro->scopestack_max * sizeof (I32);
		569	rss += coro->savestack_max * sizeof (ANY);
		570
		571	#if !PERL_VERSION_ATLEAST (5,9,0)
		572	rss += coro->retstack_max * sizeof (OP *);
		573	#endif
		574	}
		575
		576	return rss;
		577	}
		578
		579	/ coroutine stack handling **********************************************/
		580
553	static void	581	static void
554	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
555	{	583	{
556	/*	584	/*
557	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
558	*/	586	*/
559
560	coro_init_stacks ();	587	coro_init_stacks (aTHX);
561		588
		589	PL_curcop = &PL_compiling;
		590	PL_in_eval = EVAL_NULL;
562	PL_curcop = 0;	591	PL_comppad = 0;
563	PL_in_eval = 0;
564	PL_curpm = 0;	592	PL_curpm = 0;
		593	PL_localizing = 0;
		594	PL_dirty = 0;
		595	PL_restartop = 0;
565		596
566	{	597	{
567	dSP;	598	dSP;
568	LOGOP myop;	599	LOGOP myop;
569		600
570	/* I have no idea why this is needed, but it is */
571	PUSHMARK (SP);
572
573	SvREFCNT_dec (GvAV (PL_defgv));	601	SvREFCNT_dec (GvAV (PL_defgv));
574	GvAV (PL_defgv) = coro->args; coro->args = 0;	602	GvAV (PL_defgv) = coro->args; coro->args = 0;
575		603
576	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
577	myop.op_next = Nullop;	605	myop.op_next = Nullop;
578	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
579		607
		608	PUSHMARK (SP);
		609	XPUSHs (av_shift (GvAV (PL_defgv)));
		610	PUTBACK;
580	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
581
582	PUSHMARK (SP);
583	XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
584	PUTBACK;
585	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
586	SPAGAIN;	613	SPAGAIN;
587
588	ENTER; /* necessary e.g. for dounwind */
589	}	614	}
590	}
591		615
		616	ENTER; /* necessary e.g. for dounwind */
		617	}
		618
592	static void	619	static void
593	free_coro_mortal ()	620	free_coro_mortal (pTHX)
594	{	621	{
595	if (coro_mortal)	622	if (coro_mortal)
596	{	623	{
597	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
598	coro_mortal = 0;	625	coro_mortal = 0;
599	}	626	}
600	}	627	}
601		628
		629	/* inject a fake call to Coro::State::_cctx_init into the execution */
		630	/* _cctx_init should be careful, as it could be called at almost any time */
		631	/* during execution of a perl program */
602	static void NOINLINE	632	static void NOINLINE
603	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
604	{	634	{
605	dSP;	635	dSP;
606	LOGOP myop;	636	LOGOP myop;
607		637
608	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
609	myop.op_next = PL_op;	639	myop.op_next = PL_op;
610	myop.op_flags = OPf_WANT_VOID;	640	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
611
612	sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx));
613		641
614	PUSHMARK (SP);	642	PUSHMARK (SP);
		643	EXTEND (SP, 2);
		644	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
615	XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));	645	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
616	PUTBACK;	646	PUTBACK;
		647	PL_op = (OP *)&myop;
617	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
618	SPAGAIN;	649	SPAGAIN;
619	}	650	}
620		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
621	static void	655	static void
622	coro_run (void *arg)	656	coro_run (void *arg)
623	{	657	{
		658	dTHX;
		659
624	/* coro_run is the alternative epilogue of transfer() */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
625	UNLOCK;	661	UNLOCK;
626		662
		663	PL_top_env = &PL_start_env;
		664
		665	/* inject a fake subroutine call to cctx_init */
		666	prepare_cctx (aTHX_ (coro_cctx *)arg);
		667
		668	/* somebody or something will hit me for both perl_run and PL_restartop */
		669	PL_restartop = PL_op;
		670	perl_run (PL_curinterp);
		671
627	/*	672	/*
628	* this is a _very_ stripped down perl interpreter ;)	673	* If perl-run returns we assume exit() was being called or the coro
		674	* fell off the end, which seems to be the only valid (non-bug)
		675	* reason for perl_run to return. We try to exit by jumping to the
		676	* bootstrap-time "top" top_env, as we cannot restore the "main"
		677	* coroutine as Coro has no such concept
629	*/	678	*/
630	PL_top_env = &PL_start_env;	679	PL_top_env = main_top_env;
631	/* inject call to cctx_init */	680	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
632	prepare_cctx ((coro_cctx *)arg);
633
634	/* somebody will hit me for both perl_run and PL_restartop */
635	perl_run (PL_curinterp);
636
637	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
638	abort ();
639	}	681	}
640		682
641	static coro_cctx *	683	static coro_cctx *
642	cctx_new ()	684	cctx_new ()
643	{	685	{
644	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
645		689
		690	++cctx_count;
		691
646	New (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
647		693
648	#if HAVE_MMAP	694	#if HAVE_MMAP
649		695
650	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
651	/* mmap suppsedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
652	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	698	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
653		699
654	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
655	{
656	perror ("FATAL: unable to mmap stack for coroutine");
657	_exit (EXIT_FAILURE);
658	}	701	{
659
660	# if STACKGUARD	702	# if CORO_STACKGUARD
661	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
662	# endif	704	# endif
		705	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		706	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		707	cctx->mapped = 1;
		708	}
		709	else
		710	#endif
		711	{
		712	cctx->ssize = coro_stacksize * (long)sizeof (long);
		713	New (0, cctx->sptr, coro_stacksize, long);
663		714
664	#else
665
666	cctx->ssize = STACKSIZE * (long)sizeof (long);
667	New (0, cctx->sptr, STACKSIZE, long);
668
669	if (!cctx->sptr)	715	if (!cctx->sptr)
670	{	716	{
671	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
672	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
673	}	719	}
674		720
675	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
676		724
677	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
678	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
679	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
680	cctx->ssize + (char *)cctx->sptr
681	);
682	#endif
683
684	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	726	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
685		727
686	return cctx;	728	return cctx;
687	}	729	}
688		730
689	static void	731	static void
690	cctx_free (coro_cctx *cctx)	732	cctx_destroy (coro_cctx *cctx)
691	{	733	{
692	if (!cctx)	734	if (!cctx)
693	return;	735	return;
694		736
		737	--cctx_count;
		738
695	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
696	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
697	#endif	741	#endif
698		742
699	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
700	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
701	#else	746	else
		747	#endif
702	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
703	#endif
704		749
705	Safefree (cctx);	750	Safefree (cctx);
706	}	751	}
707		752
708	static coro_cctx *cctx_first;
709	static int cctx_count, cctx_idle;
710
711	static coro_cctx *	753	static coro_cctx *
712	cctx_get ()	754	cctx_get (pTHX)
713	{	755	{
714	coro_cctx *cctx;
715
716	if (cctx_first)	756	while (cctx_first)
717	{	757	{
		758	coro_cctx *cctx = cctx_first;
		759	cctx_first = cctx->next;
718	--cctx_idle;	760	--cctx_idle;
719	cctx = cctx_first;	761
720	cctx_first = cctx->next;	762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
721	}	766	}
722	else	767
723	{
724	++cctx_count;
725	cctx = cctx_new ();
726	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
727	}
728
729	return cctx;	769	return cctx_new ();
730	}	770	}
731		771
732	static void	772	static void
733	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
734	{	774	{
		775	/* free another cctx if overlimit */
		776	if (cctx_idle >= MAX_IDLE_CCTX)
		777	{
		778	coro_cctx *first = cctx_first;
		779	cctx_first = first->next;
		780	--cctx_idle;
		781
		782	assert (!first->inuse);
		783	cctx_destroy (first);
		784	}
		785
735	++cctx_idle;	786	++cctx_idle;
736	cctx->next = cctx_first;	787	cctx->next = cctx_first;
737	cctx_first = cctx;	788	cctx_first = cctx;
738	}	789	}
739		790
		791	/ coroutine switching ***************************************************/
		792
740	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
741	static void NOINLINE	794	static void NOINLINE
742	transfer (struct coro prev, struct coro next, int flags)	795	transfer (pTHX_ struct coro prev, struct coro next)
743	{	796	{
744	dSTACKLEVEL;	797	dSTACKLEVEL;
745		798
746	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
747	if (flags == TRANSFER_SET_STACKLEVEL)	800	if (!next)
		801	{
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	802	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		803	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		804	}
749	else if (prev != next)	805	else if (prev != next)
750	{	806	{
751	coro_cctx *prev__cctx;	807	coro_cctx *prev__cctx;
752		808
		809	if (prev->flags & CF_NEW)
		810	{
		811	/* create a new empty context */
		812	Newz (0, prev->cctx, 1, coro_cctx);
		813	prev->cctx->inuse = 1;
		814	prev->flags &= ~CF_NEW;
		815	prev->flags \|= CF_RUNNING;
		816	}
		817
		818	/TODO: must not croak here /
		819	if (!prev->flags & CF_RUNNING)
		820	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		821
		822	if (next->flags & CF_RUNNING)
		823	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		824
		825	if (next->flags & CF_DESTROYED)
		826	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		827
		828	prev->flags &= ~CF_RUNNING;
		829	next->flags \|= CF_RUNNING;
		830
753	LOCK;	831	LOCK;
754		832
755	if (next->mainstack)	833	if (next->flags & CF_NEW)
756	{	834	{
757	/* coroutine already started */	835	/* need to start coroutine */
758	SAVE (prev, flags);	836	next->flags &= ~CF_NEW;
759	LOAD (next);	837	/* first get rid of the old state */
		838	save_perl (aTHX_ prev);
		839	/* setup coroutine call */
		840	setup_coro (aTHX_ next);
		841	/* need a new stack */
		842	assert (!next->cctx);
760	}	843	}
761	else	844	else
762	{	845	{
763	/* need to start coroutine */	846	/* coroutine already started */
764	/* first get rid of the old state */	847	save_perl (aTHX_ prev);
765	SAVE (prev, -1);	848	load_perl (aTHX_ next);
766	/* setup coroutine call */
767	setup_coro (next);
768	/* need a stack */
769	next->cctx = 0;
770	}	849	}
771
772	if (!prev->cctx)
773	/* create a new empty context */
774	Newz (0, prev->cctx, 1, coro_cctx);
775		850
776	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
777		852
778	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
779	if (prev__cctx->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
780	{	855	{
		856	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		857	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		858
		859	prev->cctx = 0;
		860
781	cctx_put (prev__cctx);	861	cctx_put (prev__cctx);
782	prev->cctx = 0;	862	prev__cctx->inuse = 0;
783	}	863	}
784		864
785	if (!next->cctx)	865	if (!next->cctx)
		866	{
786	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
		868	assert (!next->cctx->inuse);
		869	next->cctx->inuse = 1;
		870	}
787		871
788	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
789	{	873	{
790	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793	}	877	}
794		878
795	free_coro_mortal ();	879	free_coro_mortal (aTHX);
796
797	UNLOCK;	880	UNLOCK;
798	}	881	}
799	}	882	}
800		883
801	struct transfer_args	884	struct transfer_args
802	{	885	{
803	struct coro prev, next;	886	struct coro prev, next;
804	int flags;
805	};	887	};
806		888
807	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
808		890
		891	/ high level stuff ******************************************************/
		892
809	static void	893	static int
810	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
811	{	895	{
812	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
813	return;	897	return 0;
		898
		899	coro->flags \|= CF_DESTROYED;
		900
		901	if (coro->flags & CF_READY)
		902	{
		903	/* reduce nready, as destroying a ready coro effectively unreadies it */
		904	/* alternative: look through all ready queues and remove the coro */
		905	LOCK;
		906	--coro_nready;
		907	UNLOCK;
		908	}
		909	else
		910	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
814		911
815	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	913	{
817	struct coro temp;	914	struct coro temp;
818		915
819	SAVE ((&temp), TRANSFER_SAVE_ALL);	916	assert (!(coro->flags & CF_RUNNING));
820	LOAD (coro);
821		917
		918	Zero (&temp, 1, struct coro);
		919	temp.save = CORO_SAVE_ALL;
		920
		921	if (coro->flags & CF_RUNNING)
		922	croak ("FATAL: tried to destroy currently running coroutine");
		923
		924	save_perl (aTHX_ &temp);
		925	load_perl (aTHX_ coro);
		926
822	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
823		928
824	LOAD ((&temp)); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
825		930
826	coro->mainstack = 0;	931	coro->mainstack = 0;
827	}	932	}
828		933
829	cctx_free (coro->cctx);	934	cctx_destroy (coro->cctx);
830	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
831	Safefree (coro);	936
		937	if (coro->next) coro->next->prev = coro->prev;
		938	if (coro->prev) coro->prev->next = coro->next;
		939	if (coro == coro_first) coro_first = coro->next;
		940
		941	return 1;
832	}	942	}
833		943
834	static int	944	static int
835	coro_state_clear (pTHX_ SV sv, MAGIC mg)	945	coro_state_free (pTHX_ SV sv, MAGIC mg)
836	{	946	{
837	struct coro coro = (struct coro )mg->mg_ptr;	947	struct coro coro = (struct coro )mg->mg_ptr;
838	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
839		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
840	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
841		957
842	return 0;	958	return 0;
843	}	959	}
844		960
845	static int	961	static int
…		…
852	return 0;	968	return 0;
853	}	969	}
854		970
855	static MGVTBL coro_state_vtbl = {	971	static MGVTBL coro_state_vtbl = {
856	0, 0, 0, 0,	972	0, 0, 0, 0,
857	coro_state_clear,	973	coro_state_free,
858	0,	974	0,
859	#ifdef MGf_DUP	975	#ifdef MGf_DUP
860	coro_state_dup,	976	coro_state_dup,
861	#else	977	#else
862	# define MGf_DUP 0	978	# define MGf_DUP 0
863	#endif	979	#endif
864	};	980	};
865		981
866	static struct coro *	982	static struct coro *
867	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
868	{	984	{
869	HV *stash;	985	HV *stash;
870	MAGIC *mg;	986	MAGIC *mg;
871		987
872	if (SvROK (coro))	988	if (SvROK (coro))
…		…
878	/* very slow, but rare, check */	994	/* very slow, but rare, check */
879	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
880	croak ("Coro::State object required");	996	croak ("Coro::State object required");
881	}	997	}
882		998
883	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
884	assert (mg->mg_type == PERL_MAGIC_ext);
885	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
886	}	1001	}
887		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
888	static void	1005	static void
889	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1006	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
890	{	1007	{
891	ta->prev = SvSTATE (prev);	1008	ta->prev = SvSTATE (prev_sv);
892	ta->next = SvSTATE (next);	1009	ta->next = SvSTATE (next_sv);
893	ta->flags = flags;
894	}	1010	}
895		1011
896	static void	1012	static void
897	api_transfer (SV prev, SV next, int flags)	1013	api_transfer (SV prev_sv, SV next_sv)
898	{	1014	{
899	dTHX;	1015	dTHX;
900	struct transfer_args ta;	1016	struct transfer_args ta;
901		1017
902	prepare_transfer (&ta, prev, next, flags);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
903	TRANSFER (ta);	1019	TRANSFER (ta);
904	}	1020	}
905		1021
		1022	static int
		1023	api_save (SV *coro_sv, int new_save)
		1024	{
		1025	dTHX;
		1026	struct coro *coro = SvSTATE (coro_sv);
		1027	int old_save = coro->save;
		1028
		1029	if (new_save >= 0)
		1030	coro->save = new_save;
		1031
		1032	return old_save;
		1033	}
		1034
906	/ Coro ******************************************************************/	1035	/ Coro ******************************************************************/
907		1036
908	#define PRIO_MAX 3
909	#define PRIO_HIGH 1
910	#define PRIO_NORMAL 0
911	#define PRIO_LOW -1
912	#define PRIO_IDLE -3
913	#define PRIO_MIN -4
914
915	/* for Coro.pm */
916	static GV coro_current, coro_idle;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;
919
920	static void	1037	static void
921	coro_enq (SV *sv)	1038	coro_enq (pTHX_ SV *coro_sv)
922	{	1039	{
923	int prio;
924
925	if (SvTYPE (sv) != SVt_PVHV)
926	croak ("Coro::ready tried to enqueue something that is not a coroutine");
927
928	prio = SvSTATE (sv)->prio;
929
930	av_push (coro_ready [prio - PRIO_MIN], sv);	1040	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
931	coro_nready++;
932	}	1041	}
933		1042
934	static SV *	1043	static SV *
935	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
936	{	1045	{
937	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
938		1047
939	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
940	if (min_prio < 0)	1049	if (min_prio < 0)
941	min_prio = 0;	1050	min_prio = 0;
942		1051
943	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
944	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
945	{
946	coro_nready--;
947	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
948	}
949		1055
950	return 0;	1056	return 0;
951	}	1057	}
952		1058
953	static void	1059	static int
954	api_ready (SV *coro)	1060	api_ready (SV *coro_sv)
955	{	1061	{
956	dTHX;	1062	dTHX;
		1063	struct coro *coro;
957		1064
958	if (SvROK (coro))	1065	if (SvROK (coro_sv))
959	coro = SvRV (coro);	1066	coro_sv = SvRV (coro_sv);
		1067
		1068	coro = SvSTATE (coro_sv);
		1069
		1070	if (coro->flags & CF_READY)
		1071	return 0;
		1072
		1073	coro->flags \|= CF_READY;
960		1074
961	LOCK;	1075	LOCK;
962	coro_enq (SvREFCNT_inc (coro));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
963	UNLOCK;	1078	UNLOCK;
964	}
965		1079
		1080	return 1;
		1081	}
		1082
966	static void	1083	static int
		1084	api_is_ready (SV *coro_sv)
		1085	{
		1086	dTHX;
		1087	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1088	}
		1089
		1090	static void
967	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
968	{	1092	{
969	SV current, prev, *next;	1093	SV prev_sv, next_sv;
970
971	current = GvSV (coro_current);
972		1094
973	for (;;)	1095	for (;;)
974	{	1096	{
975	LOCK;	1097	LOCK;
976	next = coro_deq (PRIO_MIN);	1098	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1099
		1100	/* nothing to schedule: call the idle handler */
		1101	if (!next_sv)
		1102	{
		1103	dSP;
		1104	UNLOCK;
		1105
		1106	ENTER;
		1107	SAVETMPS;
		1108
		1109	PUSHMARK (SP);
		1110	PUTBACK;
		1111	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1112
		1113	FREETMPS;
		1114	LEAVE;
		1115	continue;
		1116	}
		1117
		1118	ta->next = SvSTATE (next_sv);
		1119
		1120	/* cannot transfer to destroyed coros, skip and look for next */
		1121	if (ta->next->flags & CF_DESTROYED)
		1122	{
		1123	UNLOCK;
		1124	SvREFCNT_dec (next_sv);
		1125	/* coro_nready is already taken care of by destroy */
		1126	continue;
		1127	}
		1128
		1129	--coro_nready;
977	UNLOCK;	1130	UNLOCK;
978
979	if (next)
980	break;	1131	break;
981
982	{
983	dSP;
984
985	ENTER;
986	SAVETMPS;
987
988	PUSHMARK (SP);
989	PUTBACK;
990	call_sv (GvSV (coro_idle), G_DISCARD);
991
992	FREETMPS;
993	LEAVE;
994	}	1132	}
995	}
996
997	prev = SvRV (current);
998	SvRV (current) = next;
999		1133
1000	/* free this only after the transfer */	1134	/* free this only after the transfer */
		1135	prev_sv = SvRV (coro_current);
		1136	SvRV_set (coro_current, next_sv);
		1137	ta->prev = SvSTATE (prev_sv);
		1138
		1139	assert (ta->next->flags & CF_READY);
		1140	ta->next->flags &= ~CF_READY;
		1141
1001	LOCK;	1142	LOCK;
1002	free_coro_mortal ();	1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
1003	UNLOCK;	1145	UNLOCK;
1004	coro_mortal = prev;
1005
1006	ta->prev = SvSTATE (prev);
1007	ta->next = SvSTATE (next);
1008	ta->flags = TRANSFER_SAVE_ALL;
1009	}	1146	}
1010		1147
1011	static void	1148	static void
1012	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
1013	{	1150	{
1014	LOCK;	1151	api_ready (coro_current);
1015	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1016	UNLOCK;
1017
1018	prepare_schedule (ta);	1152	prepare_schedule (aTHX_ ta);
		1153	}
		1154
		1155	static int
		1156	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1157	{
		1158	if (coro_nready)
		1159	{
		1160	SV *prev = SvRV (coro_current);
		1161	prepare_schedule (aTHX_ ta);
		1162	api_ready (prev);
		1163	return 1;
		1164	}
		1165	else
		1166	return 0;
1019	}	1167	}
1020		1168
1021	static void	1169	static void
1022	api_schedule (void)	1170	api_schedule (void)
1023	{	1171	{
1024	dTHX;	1172	dTHX;
1025	struct transfer_args ta;	1173	struct transfer_args ta;
1026		1174
1027	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
1028	TRANSFER (ta);	1176	TRANSFER (ta);
1029	}	1177	}
1030		1178
1031	static void	1179	static int
1032	api_cede (void)	1180	api_cede (void)
1033	{	1181	{
1034	dTHX;	1182	dTHX;
1035	struct transfer_args ta;	1183	struct transfer_args ta;
1036		1184
1037	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
1038	TRANSFER (ta);	1189	TRANSFER (ta);
		1190	return 1;
		1191	}
		1192	else
		1193	return 0;
		1194	}
		1195
		1196	static int
		1197	api_cede_notself (void)
		1198	{
		1199	dTHX;
		1200	struct transfer_args ta;
		1201
		1202	if (prepare_cede_notself (aTHX_ &ta))
		1203	{
		1204	TRANSFER (ta);
		1205	return 1;
		1206	}
		1207	else
		1208	return 0;
1039	}	1209	}
1040		1210
1041	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
1042		1212
1043	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
1049	#endif	1219	#endif
1050	BOOT_PAGESIZE;	1220	BOOT_PAGESIZE;
1051		1221
1052	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1222	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1053		1223
1054	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1055	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1056	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1226	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1227	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1228	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1229	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1230	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1057		1231
1058	main_mainstack = PL_mainstack;	1232	main_mainstack = PL_mainstack;
		1233	main_top_env = PL_top_env;
		1234
		1235	while (main_top_env->je_prev)
		1236	main_top_env = main_top_env->je_prev;
1059		1237
1060	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
1061	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
1062		1240
1063	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1071	HV *hv;	1249	HV *hv;
1072	int i;	1250	int i;
1073		1251
1074	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
1075	coro->args = newAV ();	1253	coro->args = newAV ();
		1254	coro->save = CORO_SAVE_DEF;
		1255	coro->flags = CF_NEW;
1076		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
1077	hv = newHV ();	1261	coro->hv = hv = newHV ();
1078	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1262	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1079	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1080		1264
1081	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1082	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
1083	}	1267	}
1084	OUTPUT:	1268	OUTPUT:
		1269	RETVAL
		1270
		1271	int
		1272	save (SV *coro, int new_save = -1)
		1273	CODE:
		1274	RETVAL = api_save (coro, new_save);
		1275	OUTPUT:
		1276	RETVAL
		1277
		1278	int
		1279	save_also (SV *coro_sv, int save_also)
		1280	CODE:
		1281	{
		1282	struct coro *coro = SvSTATE (coro_sv);
		1283	RETVAL = coro->save;
		1284	coro->save \|= save_also;
		1285	}
		1286	OUTPUT:
1085	RETVAL	1287	RETVAL
1086		1288
1087	void	1289	void
1088	_set_stacklevel (...)	1290	_set_stacklevel (...)
1089	ALIAS:	1291	ALIAS:
1090	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1091	Coro::schedule = 2	1293	Coro::schedule = 2
1092	Coro::cede = 3	1294	Coro::cede = 3
1093	Coro::Cont::yield = 4	1295	Coro::cede_notself = 4
1094	CODE:	1296	CODE:
1095	{	1297	{
1096	struct transfer_args ta;	1298	struct transfer_args ta;
1097		1299
1098	switch (ix)	1300	switch (ix)
1099	{	1301	{
1100	case 0:	1302	case 0:
1101	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1303	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1102	ta.next = 0;	1304	ta.next = 0;
1103	ta.flags = TRANSFER_SET_STACKLEVEL;
1104	break;	1305	break;
1105		1306
1106	case 1:	1307	case 1:
1107	if (items != 3)	1308	if (items != 2)
1108	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1309	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1109		1310
1110	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1111	break;	1312	break;
1112		1313
1113	case 2:	1314	case 2:
1114	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1115	break;	1316	break;
1116		1317
1117	case 3:	1318	case 3:
1118	prepare_cede (&ta);	1319	prepare_cede (aTHX_ &ta);
1119	break;	1320	break;
1120		1321
1121	case 4:	1322	case 4:
1122	{	1323	if (!prepare_cede_notself (aTHX_ &ta))
1123	SV *yieldstack;	1324	XSRETURN_EMPTY;
1124	SV *sv;
1125	AV *defav = GvAV (PL_defgv);
1126		1325
1127	yieldstack = *hv_fetch (
1128	(HV *)SvRV (GvSV (coro_current)),
1129	"yieldstack", sizeof ("yieldstack") - 1,
1130	0
1131	);
1132
1133	/* set up @_ -- ugly */
1134	av_clear (defav);
1135	av_fill (defav, items - 1);
1136	while (items--)
1137	av_store (defav, items, SvREFCNT_inc (ST(items)));
1138
1139	sv = av_pop ((AV *)SvRV (yieldstack));
1140	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1141	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1142	ta.flags = 0;
1143	SvREFCNT_dec (sv);
1144	}
1145	break;	1326	break;
1146
1147	}	1327	}
1148		1328
		1329	BARRIER;
1149	TRANSFER (ta);	1330	TRANSFER (ta);
1150	}
1151		1331
1152	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1153	_clone_state_from (SV dst, SV src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1154	CODE:	1338	CODE:
1155	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1156	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1157		1341	RETVAL
1158	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1159
1160	++coro_src->refcnt;
1161	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1162	}
1163		1342
1164	void	1343	void
1165	_exit (code)	1344	_exit (code)
1166	int code	1345	int code
1167	PROTOTYPE: $	1346	PROTOTYPE: $
1168	CODE:	1347	CODE:
1169	_exit (code);	1348	_exit (code);
1170		1349
1171	int	1350	int
		1351	cctx_stacksize (int new_stacksize = 0)
		1352	CODE:
		1353	RETVAL = coro_stacksize;
		1354	if (new_stacksize)
		1355	coro_stacksize = new_stacksize;
		1356	OUTPUT:
		1357	RETVAL
		1358
		1359	int
1172	cctx_count ()	1360	cctx_count ()
1173	CODE:	1361	CODE:
1174	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1175	OUTPUT:	1363	OUTPUT:
1176	RETVAL	1364	RETVAL
…		…
1180	CODE:	1368	CODE:
1181	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1182	OUTPUT:	1370	OUTPUT:
1183	RETVAL	1371	RETVAL
1184		1372
		1373	void
		1374	list ()
		1375	PPCODE:
		1376	{
		1377	struct coro *coro;
		1378	for (coro = coro_first; coro; coro = coro->next)
		1379	if (coro->hv)
		1380	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1381	}
		1382
		1383	void
		1384	_eval (Coro::State coro, SV *coderef)
		1385	CODE:
		1386	{
		1387	if (coro->mainstack)
		1388	{
		1389	struct coro temp;
		1390	Zero (&temp, 1, struct coro);
		1391	temp.save = CORO_SAVE_ALL;
		1392
		1393	if (!(coro->flags & CF_RUNNING))
		1394	{
		1395	save_perl (aTHX_ &temp);
		1396	load_perl (aTHX_ coro);
		1397	}
		1398
		1399	{
		1400	dSP;
		1401	ENTER;
		1402	SAVETMPS;
		1403	PUSHMARK (SP);
		1404	PUTBACK;
		1405	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1406	SPAGAIN;
		1407	FREETMPS;
		1408	LEAVE;
		1409	PUTBACK;
		1410	}
		1411
		1412	if (!(coro->flags & CF_RUNNING))
		1413	{
		1414	save_perl (aTHX_ coro);
		1415	load_perl (aTHX_ &temp);
		1416	}
		1417	}
		1418	}
		1419
		1420	SV *
		1421	is_ready (Coro::State coro)
		1422	PROTOTYPE: $
		1423	ALIAS:
		1424	is_ready = CF_READY
		1425	is_running = CF_RUNNING
		1426	is_new = CF_NEW
		1427	is_destroyed = CF_DESTROYED
		1428	CODE:
		1429	RETVAL = boolSV (coro->flags & ix);
		1430	OUTPUT:
		1431	RETVAL
		1432
		1433	IV
		1434	rss (Coro::State coro)
		1435	PROTOTYPE: $
		1436	CODE:
		1437	RETVAL = coro_rss (coro);
		1438	OUTPUT:
		1439	RETVAL
		1440
		1441
1185	MODULE = Coro::State PACKAGE = Coro	1442	MODULE = Coro::State PACKAGE = Coro
1186		1443
1187	BOOT:	1444	BOOT:
1188	{	1445	{
1189	int i;	1446	int i;
		1447
		1448	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1449	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1450	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1451
		1452	coro_current = get_sv ("Coro::current", FALSE);
		1453	SvREADONLY_on (coro_current);
1190		1454
1191	coro_stash = gv_stashpv ("Coro", TRUE);	1455	coro_stash = gv_stashpv ("Coro", TRUE);
1192		1456
1193	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1457	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1194	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1458	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1195	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1459	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1196	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1460	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1197	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1461	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1198	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1462	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1199		1463
1200	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1201	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1202
1203	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1464	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1204	coro_ready[i] = newAV ();	1465	coro_ready[i] = newAV ();
1205		1466
1206	{	1467	{
1207	SV *sv = perl_get_sv("Coro::API", 1);	1468	SV *sv = perl_get_sv("Coro::API", 1);
1208		1469
1209	coroapi.schedule = api_schedule;	1470	coroapi.schedule = api_schedule;
		1471	coroapi.save = api_save;
1210	coroapi.cede = api_cede;	1472	coroapi.cede = api_cede;
		1473	coroapi.cede_notself = api_cede_notself;
1211	coroapi.ready = api_ready;	1474	coroapi.ready = api_ready;
		1475	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1476	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1477	coroapi.current = coro_current;
1214		1478
1215	GCoroAPI = &coroapi;	1479	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1480	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1481	SvREADONLY_on (sv);
1218	}	1482	}
1219	}	1483	}
		1484
		1485	void
		1486	_set_current (SV *current)
		1487	PROTOTYPE: $
		1488	CODE:
		1489	SvREFCNT_dec (SvRV (coro_current));
		1490	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1220		1491
1221	int	1492	int
1222	prio (Coro::State coro, int newprio = 0)	1493	prio (Coro::State coro, int newprio = 0)
1223	ALIAS:	1494	ALIAS:
1224	nice = 1	1495	nice = 1
…		…
1227	RETVAL = coro->prio;	1498	RETVAL = coro->prio;
1228		1499
1229	if (items > 1)	1500	if (items > 1)
1230	{	1501	{
1231	if (ix)	1502	if (ix)
1232	newprio += coro->prio;	1503	newprio = coro->prio - newprio;
1233		1504
1234	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1505	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1235	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1506	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1236		1507
1237	coro->prio = newprio;	1508	coro->prio = newprio;
1238	}	1509	}
1239	}	1510	}
		1511	OUTPUT:
		1512	RETVAL
1240		1513
1241	void	1514	SV *
1242	ready (SV *self)	1515	ready (SV *self)
1243	PROTOTYPE: $	1516	PROTOTYPE: $
1244	CODE:	1517	CODE:
1245	api_ready (self);	1518	RETVAL = boolSV (api_ready (self));
		1519	OUTPUT:
		1520	RETVAL
1246		1521
1247	int	1522	int
1248	nready (...)	1523	nready (...)
1249	PROTOTYPE:	1524	PROTOTYPE:
1250	CODE:	1525	CODE:
1251	RETVAL = coro_nready;	1526	RETVAL = coro_nready;
1252	OUTPUT:	1527	OUTPUT:
1253	RETVAL	1528	RETVAL
1254		1529
		1530	# for async_pool speedup
		1531	SV *
		1532	_pool_1 (...)
		1533	CODE:
		1534	{
		1535	int i, len;
		1536	HV hv = (HV )SvRV (coro_current);
		1537	AV *defav = GvAV (PL_defgv);
		1538	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1539	AV *invoke_av;
		1540
		1541	if (!invoke)
		1542	XSRETURN_EMPTY;
		1543
		1544	hv_store (hv, "desc", sizeof ("desc") - 1,
		1545	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1546
		1547	invoke_av = (AV *)SvRV (invoke);
		1548	len = av_len (invoke_av);
		1549
		1550	RETVAL = SvREFCNT_inc (AvARRAY (invoke_av)[0]);
		1551
		1552	if (len > 0)
		1553	{
		1554	av_clear (defav);
		1555	av_extend (defav, len);
		1556	for (i = 0; i < len; ++i)
		1557	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1558	}
		1559
		1560	SvREFCNT_dec (invoke);
		1561	}
		1562	OUTPUT:
		1563	RETVAL
		1564
		1565	void
		1566	_pool_2 (...)
		1567	CODE:
		1568	{
		1569	struct coro *coro = SvSTATE (coro_current);
		1570
		1571	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1572	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1573	XSRETURN_YES;
		1574
		1575	av_clear (GvAV (PL_defgv));
		1576	hv_store (SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1577	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1578	coro->save = CORO_SAVE_DEF;
		1579	coro->prio = 0;
		1580	av_push (av_async_pool, newSVsv (coro_current));
		1581
		1582	XSRETURN_NO;
		1583	}
		1584
		1585
1255	MODULE = Coro::State PACKAGE = Coro::AIO	1586	MODULE = Coro::State PACKAGE = Coro::AIO
1256		1587
1257	SV *	1588	SV *
1258	_get_state ()	1589	_get_state ()
1259	CODE:	1590	CODE:
1260	{	1591	{
1261	struct {	1592	struct io_state *data;
1262	int errorno;
1263	int laststype;
1264	int laststatval;
1265	Stat_t statcache;
1266	} data;
1267		1593
		1594	RETVAL = newSV (sizeof (struct io_state));
		1595	data = (struct io_state *)SvPVX (RETVAL);
		1596	SvCUR_set (RETVAL, sizeof (struct io_state));
		1597	SvPOK_only (RETVAL);
		1598
1268	data.errorno = errno;	1599	data->errorno = errno;
1269	data.laststype = PL_laststype;	1600	data->laststype = PL_laststype;
1270	data.laststatval = PL_laststatval;	1601	data->laststatval = PL_laststatval;
1271	data.statcache = PL_statcache;	1602	data->statcache = PL_statcache;
1272
1273	RETVAL = newSVpvn ((char *)&data, sizeof data);
1274	}	1603	}
1275	OUTPUT:	1604	OUTPUT:
1276	RETVAL	1605	RETVAL
1277		1606
1278	void	1607	void
1279	_set_state (char *data_)	1608	_set_state (char *data_)
1280	PROTOTYPE: $	1609	PROTOTYPE: $
1281	CODE:	1610	CODE:
1282	{	1611	{
1283	struct {	1612	struct io_state data = (void )data_;
1284	int errorno;
1285	int laststype;
1286	int laststatval;
1287	Stat_t statcache;
1288	} data = (void )data_;
1289		1613
1290	errno = data->errorno;	1614	errno = data->errorno;
1291	PL_laststype = data->laststype;	1615	PL_laststype = data->laststype;
1292	PL_laststatval = data->laststatval;	1616	PL_laststatval = data->laststatval;
1293	PL_statcache = data->statcache;	1617	PL_statcache = data->statcache;
1294	}	1618	}
		1619

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Comparing Coro/Coro/State.xs (file contents): Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs. Revision 1.160 by root, Sat Sep 22 22:39:15 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.106 by root, Mon Nov 27 02:08:55 2006 UTC vs.
Revision 1.160 by root, Sat Sep 22 22:39:15 2007 UTC