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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.159 by root, Sat Sep 22 14:42:56 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;
107		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;
110		144
111	/* this is a structure representing a c-level coroutine */	145	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	146	typedef struct coro_cctx {
113	struct coro_cctx *next;	147	struct coro_cctx *next;
114		148
115	/* the stack */	149	/* the stack */
116	void *sptr;	150	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	151	size_t ssize;
118		152
119	/* cpu state */	153	/* cpu state */
120	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 */
121	JMPENV *top_env;	156	JMPENV *top_env;
122	coro_context cctx;	157	coro_context cctx;
123		158
124	#if USE_VALGRIND	159	#if CORO_USE_VALGRIND
125	int valgrind_id;	160	int valgrind_id;
126	#endif	161	#endif
		162	char inuse, mapped;
127	} 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	};
128		171
129	/* this is a structure representing a perl-level coroutine */	172	/* this is a structure representing a perl-level coroutine */
130	struct coro {	173	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	174	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	175	coro_cctx *cctx;
133		176
134	/* data associated with this coroutine (initial args) */	177	/* data associated with this coroutine (initial args) */
135	AV *args;	178	AV *args;
136	int refcnt;	179	int refcnt;
		180	int save; /* CORO_SAVE flags */
		181	int flags; /* CF_ flags */
137		182
138	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
139	AV *defav;	184	AV defav; / @_ */
140	SV *defsv;	185	SV defsv; / $_ */
141	SV *errsv;	186	SV errsv; / $@ */
		187	GV deffh; / default filehandle */
		188	SV irssv; / $/ */
		189	SV irssv_sv; / real $/ cache */
142		190
143	/* saved global state not related to stacks */	191	#define VAR(name,type) type name;
144	U8 dowarn;	192	# include "state.h"
145	I32 in_eval;	193	#undef VAR
146
147	/* the stacks and related info (callchain etc..) */
148	PERL_SI *curstackinfo;
149	AV *curstack;
150	AV *mainstack;
151	SV **stack_sp;
152	OP *op;
153	SV **curpad;
154	AV *comppad;
155	CV *compcv;
156	SV **stack_base;
157	SV **stack_max;
158	SV **tmps_stack;
159	I32 tmps_floor;
160	I32 tmps_ix;
161	I32 tmps_max;
162	I32 *markstack;
163	I32 *markstack_ptr;
164	I32 *markstack_max;
165	I32 *scopestack;
166	I32 scopestack_ix;
167	I32 scopestack_max;
168	ANY *savestack;
169	I32 savestack_ix;
170	I32 savestack_max;
171	OP **retstack;
172	I32 retstack_ix;
173	I32 retstack_max;
174	PMOP *curpm;
175	COP *curcop;
176		194
177	/* coro process data */	195	/* coro process data */
178	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 */
179	};	201	};
180		202
181	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
182	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
183		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
184	static AV *	223	static AV *
185	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
186	{	225	{
187	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
188	AV newpadlist, newpad;	227	AV newpadlist, newpad;
189		228
190	newpadlist = newAV ();	229	newpadlist = newAV ();
…		…
202		241
203	return newpadlist;	242	return newpadlist;
204	}	243	}
205		244
206	static void	245	static void
207	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
208	{	247	{
209	/* may be during global destruction */	248	/* may be during global destruction */
210	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
211	{	250	{
212	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
233	AV *padlist;	272	AV *padlist;
234	AV av = (AV )mg->mg_obj;	273	AV av = (AV )mg->mg_obj;
235		274
236	/* casting is fun. */	275	/* casting is fun. */
237	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
238	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
239		278
240	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
241		280
242	return 0;	281	return 0;
243	}	282	}
244		283
245	#define PERL_MAGIC_coro PERL_MAGIC_ext	284	#define PERL_MAGIC_coro PERL_MAGIC_ext
246		285
247	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	286	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
248		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
249	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
250	static void	296	static void
251	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
252	{	298	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	299	MAGIC *mg = CORO_MAGIC (cv);
		300	AV *av;
254		301
255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	304	else
258	{	305	{
259	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
265	#else	312	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	314	#endif
268	}	315	}
269	}	316	}
270		317
271	static void	318	static void
272	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
273	{	320	{
274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	321	MAGIC *mg = CORO_MAGIC (cv);
		322	AV *av;
275		323
276	if (!mg)	324	if (!mg)
277	{	325	{
278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	326	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	327	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280	mg->mg_virtual = &vtbl_coro;	328	mg->mg_virtual = &vtbl_coro;
281	mg->mg_obj = (SV *)newAV ();	329	mg->mg_obj = (SV *)newAV ();
282	}	330	}
283		331
284	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);
285	}	338	}
		339
		340	/ load & save, init *****************************************************/
286		341
287	#define SB do {	342	#define SB do {
288	#define SE } while (0)	343	#define SE } while (0)
289		344
290	#define LOAD(state) load_state((state));
291	#define SAVE(state,flags) save_state((state),(flags));
292
293	#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
294		346
295	static void	347	static void
296	load_state(Coro__State c)	348	load_perl (pTHX_ Coro__State c)
297	{	349	{
298	PL_dowarn = c->dowarn;	350	#define VAR(name,type) PL_ ## name = c->name;
299	PL_in_eval = c->in_eval;	351	# include "state.h"
300		352	#undef VAR
301	PL_curstackinfo = c->curstackinfo;
302	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;
306	PL_curpad = c->curpad;
307	PL_comppad = c->comppad;
308	PL_compcv = c->compcv;
309	PL_stack_base = c->stack_base;
310	PL_stack_max = c->stack_max;
311	PL_tmps_stack = c->tmps_stack;
312	PL_tmps_floor = c->tmps_floor;
313	PL_tmps_ix = c->tmps_ix;
314	PL_tmps_max = c->tmps_max;
315	PL_markstack = c->markstack;
316	PL_markstack_ptr = c->markstack_ptr;
317	PL_markstack_max = c->markstack_max;
318	PL_scopestack = c->scopestack;
319	PL_scopestack_ix = c->scopestack_ix;
320	PL_scopestack_max = c->scopestack_max;
321	PL_savestack = c->savestack;
322	PL_savestack_ix = c->savestack_ix;
323	PL_savestack_max = c->savestack_max;
324	#if !PERL_VERSION_ATLEAST (5,9,0)
325	PL_retstack = c->retstack;
326	PL_retstack_ix = c->retstack_ix;
327	PL_retstack_max = c->retstack_max;
328	#endif
329	PL_curpm = c->curpm;
330	PL_curcop = c->curcop;
331		353
332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
334	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	}
335		373
336	{	374	{
337	dSP;	375	dSP;
338	CV *cv;	376	CV *cv;
339		377
340	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
341	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
342	{	380	{
343	AV padlist = (AV )POPs;
344
345	if (padlist)
346	{
347	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
348	CvPADLIST(cv) = padlist;	382	CvDEPTH (cv) = PTR2IV (POPs);
349	}	383	CvPADLIST (cv) = (AV *)POPs;
350
351	++CvDEPTH(cv);
352	}	384	}
353		385
354	PUTBACK;	386	PUTBACK;
355	}	387	}
356	}	388	}
357		389
358	static void	390	static void
359	save_state(Coro__State c, int flags)	391	save_perl (pTHX_ Coro__State c)
360	{	392	{
361	{	393	{
362	dSP;	394	dSP;
363	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
364	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
367	/*	399	/*
368	* 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
369	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
370	*/	402	*/
371		403
372	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
373	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
374	for (;;)	406	for (;;)
375	{	407	{
376	while (cxix >= 0)	408	while (cxix >= 0)
377	{	409	{
378	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
379		411
380	if (CxTYPE(cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
381	{	413	{
382	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
		415
383	if (CvDEPTH(cv))	416	if (CvDEPTH (cv))
384	{	417	{
385	EXTEND (SP, CvDEPTH(cv)*2);	418	EXTEND (SP, 3);
386
387	while (--CvDEPTH(cv))
388	{
389	/* this tells the restore code to increment CvDEPTH */
390	PUSHs (Nullsv);
391	PUSHs ((SV *)cv);
392	}
393
394	PUSHs ((SV *)CvPADLIST(cv));	419	PUSHs ((SV *)CvPADLIST (cv));
		420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
396		422
		423	CvDEPTH (cv) = 0;
397	get_padlist (cv);	424	get_padlist (aTHX_ cv);
398	}	425	}
399	}	426	}
400	#ifdef CXt_FORMAT
401	else if (CxTYPE(cx) == CXt_FORMAT)
402	{
403	/* I never used formats, so how should I know how these are implemented? */
404	/* my bold guess is as a simple, plain sub... */
405	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
406	}
407	#endif
408	}	427	}
409		428
410	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
411	break;	430	break;
412		431
413	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
414	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
415	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
416	}	435	}
417		436
418	PUTBACK;	437	PUTBACK;
419	}	438	}
420		439
421	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;
422	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
423	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;
424		445
425	c->dowarn = PL_dowarn;	446	#define VAR(name,type)c->name = PL_ ## name;
426	c->in_eval = PL_in_eval;	447	# include "state.h"
427		448	#undef VAR
428	c->curstackinfo = PL_curstackinfo;
429	c->curstack = PL_curstack;
430	c->mainstack = PL_mainstack;
431	c->stack_sp = PL_stack_sp;
432	c->op = PL_op;
433	c->curpad = PL_curpad;
434	c->comppad = PL_comppad;
435	c->compcv = PL_compcv;
436	c->stack_base = PL_stack_base;
437	c->stack_max = PL_stack_max;
438	c->tmps_stack = PL_tmps_stack;
439	c->tmps_floor = PL_tmps_floor;
440	c->tmps_ix = PL_tmps_ix;
441	c->tmps_max = PL_tmps_max;
442	c->markstack = PL_markstack;
443	c->markstack_ptr = PL_markstack_ptr;
444	c->markstack_max = PL_markstack_max;
445	c->scopestack = PL_scopestack;
446	c->scopestack_ix = PL_scopestack_ix;
447	c->scopestack_max = PL_scopestack_max;
448	c->savestack = PL_savestack;
449	c->savestack_ix = PL_savestack_ix;
450	c->savestack_max = PL_savestack_max;
451	#if !PERL_VERSION_ATLEAST (5,9,0)
452	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;
455	#endif
456	c->curpm = PL_curpm;
457	c->curcop = PL_curcop;
458	}	449	}
459		450
460	/*	451	/*
461	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
463	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
464	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
465	*/	456	*/
		457	#if CORO_PREFER_PERL_FUNCTIONS
		458	# define coro_init_stacks init_stacks
		459	#else
466	static void	460	static void
467	coro_init_stacks ()	461	coro_init_stacks (pTHX)
468	{	462	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	463	PL_curstackinfo = new_stackinfo(64, 6);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		467
474	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		471
478	New(50,PL_tmps_stack,96,SV*);	472	New(50,PL_tmps_stack,64,SV*);
479	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	475	PL_tmps_max = 64;
482		476
483	New(54,PL_markstack,16,I32);	477	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	479	PL_markstack_max = PL_markstack + 16;
486		480
…		…
490		484
491	New(54,PL_scopestack,16,I32);	485	New(54,PL_scopestack,16,I32);
492	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	487	PL_scopestack_max = 16;
494		488
495	New(54,PL_savestack,96,ANY);	489	New(54,PL_savestack,64,ANY);
496	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
497	PL_savestack_max = 96;	491	PL_savestack_max = 64;
498		492
499	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,8,OP*);	494	New(54,PL_retstack,4,OP*);
501	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
502	PL_retstack_max = 8;	496	PL_retstack_max = 4;
503	#endif	497	#endif
504	}	498	}
		499	#endif
505		500
506	/*	501	/*
507	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
508	*/	503	*/
509	static void	504	static void
510	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
511	{	506	{
512	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
513	{	508	{
514	/* is this ugly, I ask? */	509	/* restore all saved variables and stuff */
515	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
		511	assert (PL_tmps_floor == -1);
516		512
517	/* sure it is, but more important: is it correct?? :/ */	513	/* free all temporaries */
518	FREETMPS;	514	FREETMPS;
		515	assert (PL_tmps_ix == -1);
519		516
		517	/* unwind all extra stacks */
520	/POPSTACK_TO (PL_mainstack);//D//use/	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
521	}	522	}
522		523
523	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
524	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
525		526
526	while (PL_curstackinfo)	527	while (PL_curstackinfo)
527	{	528	{
528	PERL_SI *p = PL_curstackinfo->si_prev;	529	PERL_SI *p = PL_curstackinfo->si_prev;
529		530
530	{ /D//remove/
531	dSP;
532	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
533	PUTBACK; /* possibly superfluous */
534	}
535
536	if (!IN_DESTRUCT)	531	if (!IN_DESTRUCT)
537	{
538	dounwind (-1);/D//remove/
539	SvREFCNT_dec (PL_curstackinfo->si_stack);	532	SvREFCNT_dec (PL_curstackinfo->si_stack);
540	}
541		533
542	Safefree (PL_curstackinfo->si_cxstack);	534	Safefree (PL_curstackinfo->si_cxstack);
543	Safefree (PL_curstackinfo);	535	Safefree (PL_curstackinfo);
544	PL_curstackinfo = p;	536	PL_curstackinfo = p;
545	}	537	}
…		…
551	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
552	Safefree (PL_retstack);	544	Safefree (PL_retstack);
553	#endif	545	#endif
554	}	546	}
555		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
556	static void	581	static void
557	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
558	{	583	{
559	/*	584	/*
560	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
561	*/	586	*/
562
563	coro_init_stacks ();	587	coro_init_stacks (aTHX);
564		588
		589	PL_curcop = &PL_compiling;
		590	PL_in_eval = EVAL_NULL;
565	PL_curcop = 0;	591	PL_comppad = 0;
566	PL_in_eval = 0;
567	PL_curpm = 0;	592	PL_curpm = 0;
		593	PL_localizing = 0;
		594	PL_dirty = 0;
		595	PL_restartop = 0;
568		596
569	{	597	{
570	dSP;	598	dSP;
571	LOGOP myop;	599	LOGOP myop;
572		600
573	/* I have no idea why this is needed, but it is */
574	PUSHMARK (SP);
575
576	SvREFCNT_dec (GvAV (PL_defgv));	601	SvREFCNT_dec (GvAV (PL_defgv));
577	GvAV (PL_defgv) = coro->args; coro->args = 0;	602	GvAV (PL_defgv) = coro->args; coro->args = 0;
578		603
579	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
580	myop.op_next = Nullop;	605	myop.op_next = Nullop;
581	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
582		607
		608	PUSHMARK (SP);
		609	XPUSHs (av_shift (GvAV (PL_defgv)));
		610	PUTBACK;
583	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
584
585	PUSHMARK (SP);
586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587	PUTBACK;
588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	613	SPAGAIN;
590
591	ENTER; /* necessary e.g. for dounwind */
592	}	614	}
593	}
594		615
		616	ENTER; /* necessary e.g. for dounwind */
		617	}
		618
595	static void	619	static void
596	free_coro_mortal ()	620	free_coro_mortal (pTHX)
597	{	621	{
598	if (coro_mortal)	622	if (coro_mortal)
599	{	623	{
600	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
601	coro_mortal = 0;	625	coro_mortal = 0;
602	}	626	}
603	}	627	}
604		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 */
605	static void NOINLINE	632	static void NOINLINE
606	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
607	{	634	{
608	dSP;	635	dSP;
609	LOGOP myop;	636	LOGOP myop;
610		637
611	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
612	myop.op_next = PL_op;	639	myop.op_next = PL_op;
613	myop.op_flags = OPf_WANT_VOID;	640	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
614
615	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
616		641
617	PUSHMARK (SP);	642	PUSHMARK (SP);
		643	EXTEND (SP, 2);
		644	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
618	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	645	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
619	PUTBACK;	646	PUTBACK;
		647	PL_op = (OP *)&myop;
620	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
621	SPAGAIN;	649	SPAGAIN;
622	}	650	}
623		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
624	static void	655	static void
625	coro_run (void *arg)	656	coro_run (void *arg)
626	{	657	{
		658	dTHX;
		659
627	/* coro_run is the alternative epilogue of transfer() */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
628	UNLOCK;	661	UNLOCK;
629		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
630	/*	672	/*
631	* 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
632	*/	678	*/
633	PL_top_env = &PL_start_env;	679	PL_top_env = main_top_env;
634		680	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
635	/* inject call to cctx_init */
636	prepare_cctx ((coro_cctx *)arg);
637
638	/* somebody will hit me for both perl_run and PL_restartop */
639	perl_run (PL_curinterp);
640
641	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
642	abort ();
643	}	681	}
644		682
645	static coro_cctx *	683	static coro_cctx *
646	cctx_new ()	684	cctx_new ()
647	{	685	{
648	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
649		689
650	++cctx_count;	690	++cctx_count;
651		691
652	New (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
653		693
654	#if HAVE_MMAP	694	#if HAVE_MMAP
655		695
656	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657	/* mmap suppsedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
658	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);
659		699
660	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
661	{
662	perror ("FATAL: unable to mmap stack for coroutine");
663	_exit (EXIT_FAILURE);
664	}	701	{
665
666	# if STACKGUARD	702	# if CORO_STACKGUARD
667	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
668	# 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);
669		714
670	#else
671
672	cctx->ssize = STACKSIZE * (long)sizeof (long);
673	New (0, cctx->sptr, STACKSIZE, long);
674
675	if (!cctx->sptr)	715	if (!cctx->sptr)
676	{	716	{
677	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
678	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
679	}	719	}
680		720
681	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
682		724
683	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
684	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
685	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
686	cctx->ssize + (char *)cctx->sptr
687	);
688	#endif
689
690	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);
691		727
692	return cctx;	728	return cctx;
693	}	729	}
694		730
695	static void	731	static void
696	cctx_free (coro_cctx *cctx)	732	cctx_destroy (coro_cctx *cctx)
697	{	733	{
698	if (!cctx)	734	if (!cctx)
699	return;	735	return;
700		736
701	--cctx_count;	737	--cctx_count;
702		738
703	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
704	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
705	#endif	741	#endif
706		742
707	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
708	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
709	#else	746	else
		747	#endif
710	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
711	#endif
712		749
713	Safefree (cctx);	750	Safefree (cctx);
714	}	751	}
715		752
716	static coro_cctx *	753	static coro_cctx *
717	cctx_get ()	754	cctx_get (pTHX)
718	{	755	{
719	coro_cctx *cctx;
720
721	if (cctx_first)	756	while (cctx_first)
722	{	757	{
		758	coro_cctx *cctx = cctx_first;
		759	cctx_first = cctx->next;
723	--cctx_idle;	760	--cctx_idle;
724	cctx = cctx_first;	761
725	cctx_first = cctx->next;	762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
726	}	766	}
727	else	767
728	{
729	cctx = cctx_new ();
730	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
731	}
732
733	return cctx;	769	return cctx_new ();
734	}	770	}
735		771
736	static void	772	static void
737	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
738	{	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
739	++cctx_idle;	786	++cctx_idle;
740	cctx->next = cctx_first;	787	cctx->next = cctx_first;
741	cctx_first = cctx;	788	cctx_first = cctx;
742	}	789	}
743		790
		791	/ coroutine switching ***************************************************/
		792
744	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
745	static void NOINLINE	794	static void NOINLINE
746	transfer (struct coro prev, struct coro next, int flags)	795	transfer (pTHX_ struct coro prev, struct coro next)
747	{	796	{
748	dSTACKLEVEL;	797	dSTACKLEVEL;
749		798
750	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
751	if (flags == TRANSFER_SET_STACKLEVEL)	800	if (!next)
		801	{
752	((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	}
753	else if (prev != next)	805	else if (prev != next)
754	{	806	{
755	coro_cctx *prev__cctx;	807	coro_cctx *prev__cctx;
756		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
757	LOCK;	831	LOCK;
758		832
759	if (next->mainstack)	833	if (next->flags & CF_NEW)
760	{	834	{
761	/* coroutine already started */	835	/* need to start coroutine */
762	SAVE (prev, flags);	836	next->flags &= ~CF_NEW;
763	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);
764	}	843	}
765	else	844	else
766	{	845	{
767	/* need to start coroutine */	846	/* coroutine already started */
768	/* first get rid of the old state */	847	save_perl (aTHX_ prev);
769	SAVE (prev, -1);	848	load_perl (aTHX_ next);
770	/* setup coroutine call */
771	setup_coro (next);
772	/* need a stack */
773	next->cctx = 0;
774	}	849	}
775
776	if (!prev->cctx)
777	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);
779		850
780	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
781		852
782	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
783	if (prev__cctx->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
784	{	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
785	cctx_put (prev__cctx);	861	cctx_put (prev__cctx);
786	prev->cctx = 0;	862	prev__cctx->inuse = 0;
787	}	863	}
788		864
789	if (!next->cctx)	865	if (!next->cctx)
		866	{
790	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
		868	assert (!next->cctx->inuse);
		869	next->cctx->inuse = 1;
		870	}
791		871
792	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
793	{	873	{
794	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
795	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
796	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
797	}	877	}
798		878
799	free_coro_mortal ();	879	free_coro_mortal (aTHX);
800
801	UNLOCK;	880	UNLOCK;
802	}	881	}
803	}	882	}
804		883
805	struct transfer_args	884	struct transfer_args
806	{	885	{
807	struct coro prev, next;	886	struct coro prev, next;
808	int flags;
809	};	887	};
810		888
811	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
812		890
		891	/ high level stuff ******************************************************/
		892
813	static void	893	static int
814	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
815	{	895	{
816	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
817	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 */
818		911
819	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
820	{	913	{
821	struct coro temp;	914	struct coro temp;
822		915
823	SAVE ((&temp), TRANSFER_SAVE_ALL);	916	assert (!(coro->flags & CF_RUNNING));
824	LOAD (coro);
825		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
826	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
827		928
828	LOAD ((&temp)); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
829		930
830	coro->mainstack = 0;	931	coro->mainstack = 0;
831	}	932	}
832		933
833	cctx_free (coro->cctx);	934	cctx_destroy (coro->cctx);
834	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
835	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;
836	}	942	}
837		943
838	static int	944	static int
839	coro_state_clear (pTHX_ SV sv, MAGIC mg)	945	coro_state_free (pTHX_ SV sv, MAGIC mg)
840	{	946	{
841	struct coro coro = (struct coro )mg->mg_ptr;	947	struct coro coro = (struct coro )mg->mg_ptr;
842	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
843		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
844	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
845		957
846	return 0;	958	return 0;
847	}	959	}
848		960
849	static int	961	static int
…		…
856	return 0;	968	return 0;
857	}	969	}
858		970
859	static MGVTBL coro_state_vtbl = {	971	static MGVTBL coro_state_vtbl = {
860	0, 0, 0, 0,	972	0, 0, 0, 0,
861	coro_state_clear,	973	coro_state_free,
862	0,	974	0,
863	#ifdef MGf_DUP	975	#ifdef MGf_DUP
864	coro_state_dup,	976	coro_state_dup,
865	#else	977	#else
866	# define MGf_DUP 0	978	# define MGf_DUP 0
867	#endif	979	#endif
868	};	980	};
869		981
870	static struct coro *	982	static struct coro *
871	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
872	{	984	{
873	HV *stash;	985	HV *stash;
874	MAGIC *mg;	986	MAGIC *mg;
875		987
876	if (SvROK (coro))	988	if (SvROK (coro))
…		…
882	/* very slow, but rare, check */	994	/* very slow, but rare, check */
883	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
884	croak ("Coro::State object required");	996	croak ("Coro::State object required");
885	}	997	}
886		998
887	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
888	assert (mg->mg_type == PERL_MAGIC_ext);
889	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
890	}	1001	}
891		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
892	static void	1005	static void
893	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)
894	{	1007	{
895	ta->prev = SvSTATE (prev);	1008	ta->prev = SvSTATE (prev_sv);
896	ta->next = SvSTATE (next);	1009	ta->next = SvSTATE (next_sv);
897	ta->flags = flags;
898	}	1010	}
899		1011
900	static void	1012	static void
901	api_transfer (SV prev, SV next, int flags)	1013	api_transfer (SV prev_sv, SV next_sv)
902	{	1014	{
903	dTHX;	1015	dTHX;
904	struct transfer_args ta;	1016	struct transfer_args ta;
905		1017
906	prepare_transfer (&ta, prev, next, flags);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
907	TRANSFER (ta);	1019	TRANSFER (ta);
908	}	1020	}
909		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
910	/ Coro ******************************************************************/	1035	/ Coro ******************************************************************/
911		1036
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static GV coro_current, coro_idle;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1037	static void
925	coro_enq (SV *sv)	1038	coro_enq (pTHX_ SV *coro_sv)
926	{	1039	{
927	int prio;
928
929	if (SvTYPE (sv) != SVt_PVHV)
930	croak ("Coro::ready tried to enqueue something that is not a coroutine");
931
932	prio = SvSTATE (sv)->prio;
933
934	av_push (coro_ready [prio - PRIO_MIN], sv);	1040	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
935	coro_nready++;
936	}	1041	}
937		1042
938	static SV *	1043	static SV *
939	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
940	{	1045	{
941	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
942		1047
943	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
944	if (min_prio < 0)	1049	if (min_prio < 0)
945	min_prio = 0;	1050	min_prio = 0;
946		1051
947	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
948	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
949	{
950	coro_nready--;
951	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
952	}
953		1055
954	return 0;	1056	return 0;
955	}	1057	}
956		1058
957	static void	1059	static int
958	api_ready (SV *coro)	1060	api_ready (SV *coro_sv)
959	{	1061	{
960	dTHX;	1062	dTHX;
		1063	struct coro *coro;
961		1064
962	if (SvROK (coro))	1065	if (SvROK (coro_sv))
963	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;
964		1074
965	LOCK;	1075	LOCK;
966	coro_enq (SvREFCNT_inc (coro));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
967	UNLOCK;	1078	UNLOCK;
968	}
969		1079
		1080	return 1;
		1081	}
		1082
970	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
971	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
972	{	1092	{
973	SV current, prev, *next;	1093	SV prev_sv, next_sv;
974
975	current = GvSV (coro_current);
976		1094
977	for (;;)	1095	for (;;)
978	{	1096	{
979	LOCK;	1097	LOCK;
980	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;
981	UNLOCK;	1130	UNLOCK;
982
983	if (next)
984	break;	1131	break;
985
986	{
987	dSP;
988
989	ENTER;
990	SAVETMPS;
991
992	PUSHMARK (SP);
993	PUTBACK;
994	call_sv (GvSV (coro_idle), G_DISCARD);
995
996	FREETMPS;
997	LEAVE;
998	}	1132	}
999	}
1000
1001	prev = SvRV (current);
1002	SvRV (current) = next;
1003		1133
1004	/* 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
1005	LOCK;	1142	LOCK;
1006	free_coro_mortal ();	1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
1007	UNLOCK;	1145	UNLOCK;
1008	coro_mortal = prev;
1009
1010	ta->prev = SvSTATE (prev);
1011	ta->next = SvSTATE (next);
1012	ta->flags = TRANSFER_SAVE_ALL;
1013	}	1146	}
1014		1147
1015	static void	1148	static void
1016	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
1017	{	1150	{
1018	LOCK;	1151	api_ready (coro_current);
1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020	UNLOCK;
1021
1022	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;
1023	}	1167	}
1024		1168
1025	static void	1169	static void
1026	api_schedule (void)	1170	api_schedule (void)
1027	{	1171	{
1028	dTHX;	1172	dTHX;
1029	struct transfer_args ta;	1173	struct transfer_args ta;
1030		1174
1031	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
1032	TRANSFER (ta);	1176	TRANSFER (ta);
1033	}	1177	}
1034		1178
1035	static void	1179	static int
1036	api_cede (void)	1180	api_cede (void)
1037	{	1181	{
1038	dTHX;	1182	dTHX;
1039	struct transfer_args ta;	1183	struct transfer_args ta;
1040		1184
1041	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
1042	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;
1043	}	1209	}
1044		1210
1045	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
1046		1212
1047	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
1053	#endif	1219	#endif
1054	BOOT_PAGESIZE;	1220	BOOT_PAGESIZE;
1055		1221
1056	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1222	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1057		1223
1058	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1059	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1060	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));
1061		1231
1062	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;
1063		1237
1064	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
1065	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
1066		1240
1067	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1075	HV *hv;	1249	HV *hv;
1076	int i;	1250	int i;
1077		1251
1078	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
1079	coro->args = newAV ();	1253	coro->args = newAV ();
		1254	coro->save = CORO_SAVE_DEF;
		1255	coro->flags = CF_NEW;
1080		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
1081	hv = newHV ();	1261	coro->hv = hv = newHV ();
1082	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;
1083	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084		1264
1085	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1086	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
1087	}	1267	}
1088	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:
1089	RETVAL	1287	RETVAL
1090		1288
1091	void	1289	void
1092	_set_stacklevel (...)	1290	_set_stacklevel (...)
1093	ALIAS:	1291	ALIAS:
1094	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1095	Coro::schedule = 2	1293	Coro::schedule = 2
1096	Coro::cede = 3	1294	Coro::cede = 3
1097	Coro::Cont::yield = 4	1295	Coro::cede_notself = 4
1098	CODE:	1296	CODE:
1099	{	1297	{
1100	struct transfer_args ta;	1298	struct transfer_args ta;
1101		1299
1102	switch (ix)	1300	switch (ix)
1103	{	1301	{
1104	case 0:	1302	case 0:
1105	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1303	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1106	ta.next = 0;	1304	ta.next = 0;
1107	ta.flags = TRANSFER_SET_STACKLEVEL;
1108	break;	1305	break;
1109		1306
1110	case 1:	1307	case 1:
1111	if (items != 3)	1308	if (items != 2)
1112	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);
1113		1310
1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1115	break;	1312	break;
1116		1313
1117	case 2:	1314	case 2:
1118	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1119	break;	1316	break;
1120		1317
1121	case 3:	1318	case 3:
1122	prepare_cede (&ta);	1319	prepare_cede (aTHX_ &ta);
1123	break;	1320	break;
1124		1321
1125	case 4:	1322	case 4:
1126	{	1323	if (!prepare_cede_notself (aTHX_ &ta))
1127	SV *yieldstack;	1324	XSRETURN_EMPTY;
1128	SV *sv;
1129	AV *defav = GvAV (PL_defgv);
1130		1325
1131	yieldstack = *hv_fetch (
1132	(HV *)SvRV (GvSV (coro_current)),
1133	"yieldstack", sizeof ("yieldstack") - 1,
1134	0
1135	);
1136
1137	/* set up @_ -- ugly */
1138	av_clear (defav);
1139	av_fill (defav, items - 1);
1140	while (items--)
1141	av_store (defav, items, SvREFCNT_inc (ST(items)));
1142
1143	sv = av_pop ((AV *)SvRV (yieldstack));
1144	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1145	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1146	ta.flags = 0;
1147	SvREFCNT_dec (sv);
1148	}
1149	break;	1326	break;
1150
1151	}	1327	}
1152		1328
		1329	BARRIER;
1153	TRANSFER (ta);	1330	TRANSFER (ta);
1154	}
1155		1331
1156	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1157	_clone_state_from (SV dst, SV src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1158	CODE:	1338	CODE:
1159	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1160	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1161		1341	RETVAL
1162	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1163
1164	++coro_src->refcnt;
1165	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1166	}
1167		1342
1168	void	1343	void
1169	_exit (code)	1344	_exit (code)
1170	int code	1345	int code
1171	PROTOTYPE: $	1346	PROTOTYPE: $
1172	CODE:	1347	CODE:
1173	_exit (code);	1348	_exit (code);
1174		1349
1175	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
1176	cctx_count ()	1360	cctx_count ()
1177	CODE:	1361	CODE:
1178	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1179	OUTPUT:	1363	OUTPUT:
1180	RETVAL	1364	RETVAL
…		…
1184	CODE:	1368	CODE:
1185	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1186	OUTPUT:	1370	OUTPUT:
1187	RETVAL	1371	RETVAL
1188		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
1189	MODULE = Coro::State PACKAGE = Coro	1442	MODULE = Coro::State PACKAGE = Coro
1190		1443
1191	BOOT:	1444	BOOT:
1192	{	1445	{
1193	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);
1194		1454
1195	coro_stash = gv_stashpv ("Coro", TRUE);	1455	coro_stash = gv_stashpv ("Coro", TRUE);
1196		1456
1197	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1457	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1198	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1458	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1199	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1459	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1460	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1461	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1462	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203		1463
1204	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1205	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1206
1207	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1464	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208	coro_ready[i] = newAV ();	1465	coro_ready[i] = newAV ();
1209		1466
1210	{	1467	{
1211	SV *sv = perl_get_sv("Coro::API", 1);	1468	SV *sv = perl_get_sv("Coro::API", 1);
1212		1469
1213	coroapi.schedule = api_schedule;	1470	coroapi.schedule = api_schedule;
		1471	coroapi.save = api_save;
1214	coroapi.cede = api_cede;	1472	coroapi.cede = api_cede;
		1473	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1474	coroapi.ready = api_ready;
		1475	coroapi.is_ready = api_is_ready;
1216	coroapi.nready = &coro_nready;	1476	coroapi.nready = &coro_nready;
1217	coroapi.current = coro_current;	1477	coroapi.current = coro_current;
1218		1478
1219	GCoroAPI = &coroapi;	1479	GCoroAPI = &coroapi;
1220	sv_setiv (sv, (IV)&coroapi);	1480	sv_setiv (sv, (IV)&coroapi);
1221	SvREADONLY_on (sv);	1481	SvREADONLY_on (sv);
1222	}	1482	}
1223	}	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)));
1224		1491
1225	int	1492	int
1226	prio (Coro::State coro, int newprio = 0)	1493	prio (Coro::State coro, int newprio = 0)
1227	ALIAS:	1494	ALIAS:
1228	nice = 1	1495	nice = 1
…		…
1231	RETVAL = coro->prio;	1498	RETVAL = coro->prio;
1232		1499
1233	if (items > 1)	1500	if (items > 1)
1234	{	1501	{
1235	if (ix)	1502	if (ix)
1236	newprio += coro->prio;	1503	newprio = coro->prio - newprio;
1237		1504
1238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1505	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1506	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1240		1507
1241	coro->prio = newprio;	1508	coro->prio = newprio;
1242	}	1509	}
1243	}	1510	}
		1511	OUTPUT:
		1512	RETVAL
1244		1513
1245	void	1514	SV *
1246	ready (SV *self)	1515	ready (SV *self)
1247	PROTOTYPE: $	1516	PROTOTYPE: $
1248	CODE:	1517	CODE:
1249	api_ready (self);	1518	RETVAL = boolSV (api_ready (self));
		1519	OUTPUT:
		1520	RETVAL
1250		1521
1251	int	1522	int
1252	nready (...)	1523	nready (...)
1253	PROTOTYPE:	1524	PROTOTYPE:
1254	CODE:	1525	CODE:
1255	RETVAL = coro_nready;	1526	RETVAL = coro_nready;
1256	OUTPUT:	1527	OUTPUT:
1257	RETVAL	1528	RETVAL
1258		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	av_clear (defav);
		1551
		1552	RETVAL = sv_2mortal (SvREFCNT_inc (AvARRAY (invoke_av)[0]));
		1553
		1554	if (len > 0)
		1555	{
		1556	av_extend (defav, len);
		1557	for (i = 0; i < len; ++i)
		1558	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1559	}
		1560
		1561	SvREFCNT_dec (invoke);
		1562	}
		1563	OUTPUT:
		1564	RETVAL
		1565
		1566	void
		1567	_pool_2 (...)
		1568	CODE:
		1569	{
		1570	struct coro *coro = SvSTATE (coro_current);
		1571
		1572	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1573	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1574	XSRETURN_YES;
		1575
		1576	av_clear (GvAV (PL_defgv));
		1577	hv_store (SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1578	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1579	coro->save = CORO_SAVE_DEF;
		1580	coro->prio = 0;
		1581	av_push (av_async_pool, newSVsv (coro_current));
		1582
		1583	XSRETURN_NO;
		1584	}
		1585
		1586
1259	MODULE = Coro::State PACKAGE = Coro::AIO	1587	MODULE = Coro::State PACKAGE = Coro::AIO
1260		1588
1261	SV *	1589	SV *
1262	_get_state ()	1590	_get_state ()
1263	CODE:	1591	CODE:
1264	{	1592	{
1265	struct {	1593	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		1594
		1595	RETVAL = newSV (sizeof (struct io_state));
		1596	data = (struct io_state *)SvPVX (RETVAL);
		1597	SvCUR_set (RETVAL, sizeof (struct io_state));
		1598	SvPOK_only (RETVAL);
		1599
1272	data.errorno = errno;	1600	data->errorno = errno;
1273	data.laststype = PL_laststype;	1601	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1602	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1603	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1604	}
1279	OUTPUT:	1605	OUTPUT:
1280	RETVAL	1606	RETVAL
1281		1607
1282	void	1608	void
1283	_set_state (char *data_)	1609	_set_state (char *data_)
1284	PROTOTYPE: $	1610	PROTOTYPE: $
1285	CODE:	1611	CODE:
1286	{	1612	{
1287	struct {	1613	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1614
1294	errno = data->errorno;	1615	errno = data->errorno;
1295	PL_laststype = data->laststype;	1616	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1617	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1618	PL_statcache = data->statcache;
1298	}	1619	}
		1620

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Comparing Coro/Coro/State.xs (file contents): Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs. Revision 1.159 by root, Sat Sep 22 14:42:56 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.159 by root, Sat Sep 22 14:42:56 2007 UTC