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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs.
Revision 1.163 by root, Mon Sep 24 18:30:58 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 PERL_VERSION < 6	11	#include <stdio.h>
		12	#include <errno.h>
		13	#include <assert.h>
		14
		15	#ifdef HAVE_MMAP
		16	# include <unistd.h>
		17	# include <sys/mman.h>
		18	# ifndef MAP_ANONYMOUS
		19	# ifdef MAP_ANON
		20	# define MAP_ANONYMOUS MAP_ANON
		21	# else
		22	# undef HAVE_MMAP
		23	# endif
		24	# endif
		25	# include <limits.h>
		26	# ifndef PAGESIZE
		27	# define PAGESIZE pagesize
		28	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		29	static long pagesize;
		30	# else
		31	# define BOOT_PAGESIZE (void)0
		32	# endif
		33	#else
		34	# define PAGESIZE 0
		35	# define BOOT_PAGESIZE (void)0
		36	#endif
		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		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)
10	# ifndef PL_ppaddr	55	# ifndef PL_ppaddr
11	# define PL_ppaddr ppaddr	56	# define PL_ppaddr ppaddr
12	# endif	57	# endif
13	# ifndef call_sv	58	# ifndef call_sv
14	# define call_sv perl_call_sv	59	# define call_sv perl_call_sv
25	# ifndef IS_PADCONST	70	# ifndef IS_PADCONST
26	# define IS_PADCONST(v) 0	71	# define IS_PADCONST(v) 0
27	# endif	72	# endif
28	#endif	73	#endif
29		74
30	#include <stdio.h>	75	/* 5.8.7 */
31	#include <errno.h>	76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
32		79
33	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
34	# undef STACKGUARD	81	# undef CORO_STACKGUARD
35	#endif
36
37	#ifndef STACKGUARD
38	# define STACKGUARD 0
39	#endif
40
41	#ifdef HAVE_MMAP
42	# include <unistd.h>
43	# include <sys/mman.h>
44	# ifndef MAP_ANONYMOUS
45	# ifdef MAP_ANON
46	# define MAP_ANONYMOUS MAP_ANON
47	# else
48	# undef HAVE_MMAP
49	# endif
50	# endif	82	#endif
51	# include <limits.h>	83
52	# ifndef PAGESIZE	84	#ifndef CORO_STACKGUARD
53	# define PAGESIZE pagesize	85	# define CORO_STACKGUARD 0
54	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
55	static long pagesize;
56	# else
57	# define BOOT_PAGESIZE
58	# endif	86	#endif
59	#endif
60		87
61	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* prefer perl internal functions over our own? */
62	* to the current C stack pointer. Its property is that it changes with each call	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
63	* and should be unique. */	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. */
64	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
65	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
66		97
67	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
68		99
		100	#if __GNUC__ >= 3
		101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		103	#else
		104	# define attribute(x)
		105	# define BARRIER
		106	#endif
		107
		108	#define NOINLINE attribute ((noinline))
		109
69	#include "CoroAPI.h"	110	#include "CoroAPI.h"
70
71	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
72		111
73	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
74	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
75	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
76	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
77	#else	116	#else
78	# define LOCK (void)0	117	# define LOCK (void)0
79	# define UNLOCK (void)0	118	# define UNLOCK (void)0
80	#endif	119	#endif
81		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;
82	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
83	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;
84	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
85	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
86		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;
		144
87	/* this is a structure representing a c-level coroutine */	145	/* this is a structure representing a c-level coroutine */
88	typedef struct coro_stack {	146	typedef struct coro_cctx {
89	struct coro_stack *next;	147	struct coro_cctx *next;
90		148
91	/* the stack */	149	/* the stack */
92	void *sptr;	150	void *sptr;
93	long ssize; /* positive == mmap, otherwise malloc */	151	size_t ssize;
94		152
95	/* cpu state */	153	/* cpu state */
96	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 */
97	JMPENV *top_env;	156	JMPENV *top_env;
98	coro_context cctx;	157	coro_context cctx;
99	} coro_stack;	158
		159	#if CORO_USE_VALGRIND
		160	int valgrind_id;
		161	#endif
		162	char inuse, mapped;
		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	};
100		171
101	/* this is a structure representing a perl-level coroutine */	172	/* this is a structure representing a perl-level coroutine */
102	struct coro {	173	struct coro {
103	/* the c coroutine allocated to this perl coroutine, if any */	174	/* the c coroutine allocated to this perl coroutine, if any */
104	coro_stack *stack;	175	coro_cctx *cctx;
105		176
106	/* data associated with this coroutine (initial args) */	177	/* data associated with this coroutine (initial args) */
107	AV *args;	178	AV *args;
108	int refcnt;	179	int refcnt;
		180	int save; /* CORO_SAVE flags */
		181	int flags; /* CF_ flags */
109		182
110	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
111	AV *defav;	184	AV defav; / @_ */
112	SV *defsv;	185	SV defsv; / $_ */
113	SV *errsv;	186	SV errsv; / $@ */
		187	GV deffh; / default filehandle */
		188	SV irssv; / $/ */
		189	SV irssv_sv; / real $/ cache */
114		190
115	/* saved global state not related to stacks */	191	#define VAR(name,type) type name;
116	U8 dowarn;	192	# include "state.h"
117	I32 in_eval;	193	#undef VAR
118
119	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;
121	AV *curstack;
122	AV *mainstack;
123	SV **stack_sp;
124	OP *op;
125	SV **curpad;
126	AV *comppad;
127	CV *compcv;
128	SV **stack_base;
129	SV **stack_max;
130	SV **tmps_stack;
131	I32 tmps_floor;
132	I32 tmps_ix;
133	I32 tmps_max;
134	I32 *markstack;
135	I32 *markstack_ptr;
136	I32 *markstack_max;
137	I32 *scopestack;
138	I32 scopestack_ix;
139	I32 scopestack_max;
140	ANY *savestack;
141	I32 savestack_ix;
142	I32 savestack_max;
143	OP **retstack;
144	I32 retstack_ix;
145	I32 retstack_max;
146	PMOP *curpm;
147	COP *curcop;
148		194
149	/* coro process data */	195	/* coro process data */
150	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 */
151	};	201	};
152		202
153	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
154	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
155		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
156	static AV *	223	static AV *
157	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
158	{	225	{
159	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
160	AV newpadlist, newpad;	227	AV newpadlist, newpad;
161		228
162	newpadlist = newAV ();	229	newpadlist = newAV ();
163	AvREAL_off (newpadlist);	230	AvREAL_off (newpadlist);
164	#if PERL_VERSION < 9	231	#if PERL_VERSION_ATLEAST (5,9,0)
		232	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		233	#else
165	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	234	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166	#else
167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
168	#endif	235	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	236	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	237	--AvFILLp (padlist);
171		238
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	239	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
174		241
175	return newpadlist;	242	return newpadlist;
176	}	243	}
177		244
178	static void	245	static void
179	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
180	{	247	{
181	/* may be during global destruction */	248	/* may be during global destruction */
182	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
183	{	250	{
184	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
205	AV *padlist;	272	AV *padlist;
206	AV av = (AV )mg->mg_obj;	273	AV av = (AV )mg->mg_obj;
207		274
208	/* casting is fun. */	275	/* casting is fun. */
209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
210	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
211		278
212	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
213		280
214	return 0;	281	return 0;
215	}	282	}
216		283
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	284	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		285
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	286	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		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
221	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
222	static void	296	static void
223	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
224	{	298	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	299	MAGIC *mg = CORO_MAGIC (cv);
		300	AV *av;
226		301
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	304	else
230	{	305	{
231	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
232	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
234	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
235	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
236	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
237	#else	312	#else
238	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
239	#endif	314	#endif
240	}	315	}
241	}	316	}
242		317
243	static void	318	static void
244	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
245	{	320	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	321	MAGIC *mg = CORO_MAGIC (cv);
		322	AV *av;
247		323
248	if (!mg)	324	if (!mg)
249	{	325	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	326	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	327	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	328	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	329	mg->mg_obj = (SV *)newAV ();
254	}	330	}
255		331
256	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);
257	}	338	}
		339
		340	/ load & save, init *****************************************************/
258		341
259	#define SB do {	342	#define SB do {
260	#define SE } while (0)	343	#define SE } while (0)
261		344
262	#define LOAD(state) load_state((state));
263	#define SAVE(state,flags) save_state((state),(flags));
264
265	#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
266		346
267	static void	347	static void
268	load_state(Coro__State c)	348	load_perl (pTHX_ Coro__State c)
269	{	349	{
270	PL_dowarn = c->dowarn;	350	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	351	# include "state.h"
272		352	#undef VAR
273	PL_curstackinfo = c->curstackinfo;
274	PL_curstack = c->curstack;
275	PL_mainstack = c->mainstack;
276	PL_stack_sp = c->stack_sp;
277	PL_op = c->op;
278	PL_curpad = c->curpad;
279	PL_comppad = c->comppad;
280	PL_compcv = c->compcv;
281	PL_stack_base = c->stack_base;
282	PL_stack_max = c->stack_max;
283	PL_tmps_stack = c->tmps_stack;
284	PL_tmps_floor = c->tmps_floor;
285	PL_tmps_ix = c->tmps_ix;
286	PL_tmps_max = c->tmps_max;
287	PL_markstack = c->markstack;
288	PL_markstack_ptr = c->markstack_ptr;
289	PL_markstack_max = c->markstack_max;
290	PL_scopestack = c->scopestack;
291	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9
297	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;
300	#endif
301	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;
303		353
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	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	}
307		373
308	{	374	{
309	dSP;	375	dSP;
310	CV *cv;	376	CV *cv;
311		377
312	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
313	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
314	{	380	{
315	AV padlist = (AV )POPs;
316
317	if (padlist)
318	{
319	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
320	CvPADLIST(cv) = padlist;	382	CvDEPTH (cv) = PTR2IV (POPs);
321	}	383	CvPADLIST (cv) = (AV *)POPs;
322
323	++CvDEPTH(cv);
324	}	384	}
325		385
326	PUTBACK;	386	PUTBACK;
327	}	387	}
328	}	388	}
329		389
330	static void	390	static void
331	save_state(Coro__State c, int flags)	391	save_perl (pTHX_ Coro__State c)
332	{	392	{
333	{	393	{
334	dSP;	394	dSP;
335	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
336	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
339	/*	399	/*
340	* 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
341	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
342	*/	402	*/
343		403
344	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
345	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
346	for (;;)	406	for (;;)
347	{	407	{
348	while (cxix >= 0)	408	while (cxix >= 0)
349	{	409	{
350	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
351		411
352	if (CxTYPE(cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
353	{	413	{
354	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
		415
355	if (CvDEPTH(cv))	416	if (CvDEPTH (cv))
356	{	417	{
357	EXTEND (SP, CvDEPTH(cv)*2);	418	EXTEND (SP, 3);
358
359	while (--CvDEPTH(cv))
360	{
361	/* this tells the restore code to increment CvDEPTH */
362	PUSHs (Nullsv);
363	PUSHs ((SV *)cv);
364	}
365
366	PUSHs ((SV *)CvPADLIST(cv));	419	PUSHs ((SV *)CvPADLIST (cv));
		420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
368		422
		423	CvDEPTH (cv) = 0;
369	get_padlist (cv);	424	get_padlist (aTHX_ cv);
370	}	425	}
371	}	426	}
372	#ifdef CXt_FORMAT
373	else if (CxTYPE(cx) == CXt_FORMAT)
374	{
375	/* I never used formats, so how should I know how these are implemented? */
376	/* my bold guess is as a simple, plain sub... */
377	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
378	}
379	#endif
380	}	427	}
381		428
382	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
383	break;	430	break;
384		431
385	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
386	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
387	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
388	}	435	}
389		436
390	PUTBACK;	437	PUTBACK;
391	}	438	}
392		439
393	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;
394	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
395	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;
396		445
397	c->dowarn = PL_dowarn;	446	#define VAR(name,type)c->name = PL_ ## name;
398	c->in_eval = PL_in_eval;	447	# include "state.h"
399		448	#undef VAR
400	c->curstackinfo = PL_curstackinfo;
401	c->curstack = PL_curstack;
402	c->mainstack = PL_mainstack;
403	c->stack_sp = PL_stack_sp;
404	c->op = PL_op;
405	c->curpad = PL_curpad;
406	c->comppad = PL_comppad;
407	c->compcv = PL_compcv;
408	c->stack_base = PL_stack_base;
409	c->stack_max = PL_stack_max;
410	c->tmps_stack = PL_tmps_stack;
411	c->tmps_floor = PL_tmps_floor;
412	c->tmps_ix = PL_tmps_ix;
413	c->tmps_max = PL_tmps_max;
414	c->markstack = PL_markstack;
415	c->markstack_ptr = PL_markstack_ptr;
416	c->markstack_max = PL_markstack_max;
417	c->scopestack = PL_scopestack;
418	c->scopestack_ix = PL_scopestack_ix;
419	c->scopestack_max = PL_scopestack_max;
420	c->savestack = PL_savestack;
421	c->savestack_ix = PL_savestack_ix;
422	c->savestack_max = PL_savestack_max;
423	#if PERL_VERSION < 9
424	c->retstack = PL_retstack;
425	c->retstack_ix = PL_retstack_ix;
426	c->retstack_max = PL_retstack_max;
427	#endif
428	c->curpm = PL_curpm;
429	c->curcop = PL_curcop;
430	}	449	}
431		450
432	/*	451	/*
433	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
434	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
435	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
436	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
437	*/	456	*/
		457	#if CORO_PREFER_PERL_FUNCTIONS
		458	# define coro_init_stacks init_stacks
		459	#else
438	static void	460	static void
439	coro_init_stacks ()	461	coro_init_stacks (pTHX)
440	{	462	{
441	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	463	PL_curstackinfo = new_stackinfo(64, 6);
442	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
443	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
444	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
445		467
446	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
447	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
448	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
449		471
450	New(50,PL_tmps_stack,96,SV*);	472	New(50,PL_tmps_stack,64,SV*);
451	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
452	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
453	PL_tmps_max = 96;	475	PL_tmps_max = 64;
454		476
455	New(54,PL_markstack,16,I32);	477	New(54,PL_markstack,16,I32);
456	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
457	PL_markstack_max = PL_markstack + 16;	479	PL_markstack_max = PL_markstack + 16;
458		480
…		…
462		484
463	New(54,PL_scopestack,16,I32);	485	New(54,PL_scopestack,16,I32);
464	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
465	PL_scopestack_max = 16;	487	PL_scopestack_max = 16;
466		488
467	New(54,PL_savestack,96,ANY);	489	New(54,PL_savestack,64,ANY);
468	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
469	PL_savestack_max = 96;	491	PL_savestack_max = 64;
470		492
471	#if PERL_VERSION < 9	493	#if !PERL_VERSION_ATLEAST (5,9,0)
472	New(54,PL_retstack,8,OP*);	494	New(54,PL_retstack,4,OP*);
473	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
474	PL_retstack_max = 8;	496	PL_retstack_max = 4;
475	#endif	497	#endif
476	}	498	}
		499	#endif
477		500
478	/*	501	/*
479	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
480	*/	503	*/
481	static void	504	static void
482	destroy_stacks()	505	coro_destroy_stacks (pTHX)
483	{	506	{
484	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
485	{	508	{
486	/* is this ugly, I ask? */	509	/* restore all saved variables and stuff */
487	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
		511	assert (PL_tmps_floor == -1);
488		512
489	/* sure it is, but more important: is it correct?? :/ */	513	/* free all temporaries */
490	FREETMPS;	514	FREETMPS;
		515	assert (PL_tmps_ix == -1);
491		516
		517	/* unwind all extra stacks */
492	/POPSTACK_TO (PL_mainstack);//D//use/	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
493	}	522	}
494		523
495	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
496	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
497		526
498	while (PL_curstackinfo)	527	while (PL_curstackinfo)
499	{	528	{
500	PERL_SI *p = PL_curstackinfo->si_prev;	529	PERL_SI *p = PL_curstackinfo->si_prev;
501		530
502	{ /D//remove/
503	dSP;
504	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
505	PUTBACK; /* possibly superfluous */
506	}
507
508	if (!IN_DESTRUCT)	531	if (!IN_DESTRUCT)
509	{
510	dounwind (-1);/D//remove/
511	SvREFCNT_dec (PL_curstackinfo->si_stack);	532	SvREFCNT_dec (PL_curstackinfo->si_stack);
512	}
513		533
514	Safefree (PL_curstackinfo->si_cxstack);	534	Safefree (PL_curstackinfo->si_cxstack);
515	Safefree (PL_curstackinfo);	535	Safefree (PL_curstackinfo);
516	PL_curstackinfo = p;	536	PL_curstackinfo = p;
517	}	537	}
518		538
519	Safefree (PL_tmps_stack);	539	Safefree (PL_tmps_stack);
520	Safefree (PL_markstack);	540	Safefree (PL_markstack);
521	Safefree (PL_scopestack);	541	Safefree (PL_scopestack);
522	Safefree (PL_savestack);	542	Safefree (PL_savestack);
523	#if PERL_VERSION < 9	543	#if !PERL_VERSION_ATLEAST (5,9,0)
524	Safefree (PL_retstack);	544	Safefree (PL_retstack);
525	#endif	545	#endif
526	}	546	}
527		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
528	static void	581	static void
529	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
530	{	583	{
531	/*	584	/*
532	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
533	*/	586	*/
534	dTHX;	587	coro_init_stacks (aTHX);
		588
		589	PL_curcop = &PL_compiling;
		590	PL_in_eval = EVAL_NULL;
		591	PL_comppad = 0;
		592	PL_curpm = 0;
		593	PL_localizing = 0;
		594	PL_dirty = 0;
		595	PL_restartop = 0;
		596
		597	{
		598	dSP;
		599	LOGOP myop;
		600
		601	SvREFCNT_dec (GvAV (PL_defgv));
		602	GvAV (PL_defgv) = coro->args; coro->args = 0;
		603
		604	Zero (&myop, 1, LOGOP);
		605	myop.op_next = Nullop;
		606	myop.op_flags = OPf_WANT_VOID;
		607
		608	PUSHMARK (SP);
		609	XPUSHs (av_shift (GvAV (PL_defgv)));
		610	PUTBACK;
		611	PL_op = (OP *)&myop;
		612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		613	SPAGAIN;
		614	}
		615
		616	ENTER; /* necessary e.g. for dounwind */
		617	}
		618
		619	static void
		620	free_coro_mortal (pTHX)
		621	{
		622	if (coro_mortal)
		623	{
		624	SvREFCNT_dec (coro_mortal);
		625	coro_mortal = 0;
		626	}
		627	}
		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 */
		632	static void NOINLINE
		633	prepare_cctx (pTHX_ coro_cctx *cctx)
		634	{
535	dSP;	635	dSP;
536	UNOP myop;	636	LOGOP myop;
537	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
538		637
539	coro_init_stacks ();
540	/PL_curcop = 0;/
541	/PL_in_eval = PL_in_eval;/ /* inherit */
542	SvREFCNT_dec (GvAV (PL_defgv));
543	GvAV (PL_defgv) = coro->args; coro->args = 0;
544
545	SPAGAIN;
546
547	Zero (&myop, 1, UNOP);	638	Zero (&myop, 1, LOGOP);
548	myop.op_next = Nullop;	639	myop.op_next = PL_op;
549	myop.op_flags = OPf_WANT_VOID;	640	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
550		641
		642	PUSHMARK (SP);
		643	EXTEND (SP, 2);
		644	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		645	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		646	PUTBACK;
551	PL_op = (OP *)&myop;	647	PL_op = (OP *)&myop;
552
553	PUSHMARK(SP);
554	XPUSHs (sub_init);
555	PUTBACK;
556	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
557	SPAGAIN;	649	SPAGAIN;
558
559	ENTER; /* necessary e.g. for dounwind */
560	}	650	}
561		651
562	static void	652	/*
563	free_coro_mortal ()	653	* this is a _very_ stripped down perl interpreter ;)
564	{	654	*/
565	if (coro_mortal)
566	{
567	SvREFCNT_dec (coro_mortal);
568	coro_mortal = 0;
569	}
570	}
571
572	static void
573	prepare_cctx (coro_stack *cctx)
574	{
575	dSP;
576	UNOP myop;
577
578	Zero (&myop, 1, UNOP);
579	myop.op_next = PL_op;
580	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
581
582	PUSHMARK(SP);
583	EXTEND (SP, 2);
584	PUSHs (newSViv (PTR2IV (cctx)));
585	PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE));
586	PUTBACK;
587	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);
588	SPAGAIN;
589	}
590
591	static void	655	static void
592	coro_run (void *arg)	656	coro_run (void *arg)
593	{	657	{
		658	dTHX;
		659
		660	/* coro_run is the alternative tail of transfer(), so unlock here. */
		661	UNLOCK;
		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
594	/*	672	/*
595	* 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
596	*/	678	*/
597	UNLOCK;
598
599	PL_top_env = &PL_start_env;	679	PL_top_env = main_top_env;
600	prepare_cctx ((coro_stack *)arg);	680	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
601
602	/* somebody will hit me for both perl_run and PL_restartop */
603	perl_run (PERL_GET_CONTEXT);
604
605	fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr);
606	abort ();
607	}	681	}
608		682
609	static coro_stack *	683	static coro_cctx *
610	stack_new ()	684	cctx_new ()
611	{	685	{
612	coro_stack *stack;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
613		689
		690	++cctx_count;
		691
614	New (0, stack, 1, coro_stack);	692	Newz (0, cctx, 1, coro_cctx);
615		693
616	#if HAVE_MMAP	694	#if HAVE_MMAP
617		695
618	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
619	/* mmap suppsedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
620	stack->sptr = mmap (0, stack->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);
621		699
622	if (stack->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
623	{
624	perror ("FATAL: unable to mmap stack for coroutine");
625	_exit (EXIT_FAILURE);
626	}	701	{
627
628	# if STACKGUARD	702	# if CORO_STACKGUARD
629	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
630	# endif	704	# endif
631		705	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
632	#else	706	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
633		707	cctx->mapped = 1;
634	stack->ssize = STACKSIZE * (long)sizeof (long);
635	New (0, stack->sptr, STACKSIZE, long);
636
637	if (!stack->sptr)
638	{	708	}
		709	else
		710	#endif
		711	{
		712	cctx->ssize = coro_stacksize * (long)sizeof (long);
		713	New (0, cctx->sptr, coro_stacksize, long);
		714
		715	if (!cctx->sptr)
		716	{
639	perror (stderr, "FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
640	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
641	}	719	}
642		720
643	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
644		724
		725	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
645	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	726	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
646		727
647	return stack;	728	return cctx;
648	}	729	}
649		730
650	static void	731	static void
651	stack_free (coro_stack *stack)	732	cctx_destroy (coro_cctx *cctx)
652	{	733	{
653	if (!stack)	734	if (!cctx)
654	return;	735	return;
655		736
		737	--cctx_count;
		738
		739	#if CORO_USE_VALGRIND
		740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		741	#endif
		742
656	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
657	munmap (stack->sptr, stack->ssize);	745	munmap (cctx->sptr, cctx->ssize);
658	#else
659	Safefree (stack->sptr);
660	#endif
661
662	Safefree (stack);
663	}
664
665	static coro_stack *stack_first;
666
667	static coro_stack *
668	stack_get ()
669	{
670	coro_stack *stack;
671
672	if (stack_first)
673	{
674	stack = stack_first;
675	stack_first = stack->next;
676	}
677	else	746	else
		747	#endif
		748	Safefree (cctx->sptr);
		749
		750	Safefree (cctx);
		751	}
		752
		753	static coro_cctx *
		754	cctx_get (pTHX)
		755	{
		756	while (cctx_first)
678	{	757	{
679	stack = stack_new ();	758	coro_cctx *cctx = cctx_first;
		759	cctx_first = cctx->next;
		760	--cctx_idle;
		761
		762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
		766	}
		767
680	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
		769	return cctx_new ();
		770	}
		771
		772	static void
		773	cctx_put (coro_cctx *cctx)
		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);
681	}	784	}
682		785
683	return stack;	786	++cctx_idle;
		787	cctx->next = cctx_first;
		788	cctx_first = cctx;
684	}	789	}
685		790
686	static void	791	/ coroutine switching ***************************************************/
687	stack_put (coro_stack *stack)
688	{
689	stack->next = stack_first;
690	stack_first = stack;
691	}
692		792
693	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
694	static void	794	static void NOINLINE
695	transfer_impl (struct coro prev, struct coro next, int flags)	795	transfer (pTHX_ struct coro prev, struct coro next)
696	{	796	{
697	dSTACKLEVEL;	797	dSTACKLEVEL;
698		798
699	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
700	if (flags == TRANSFER_SET_STACKLEVEL)	800	if (!next)
		801	{
701	((coro_stack *)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	}
702	else if (prev != next)	805	else if (prev != next)
703	{	806	{
704	coro_stack *prev__stack;	807	coro_cctx *prev__cctx;
		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;
705		830
706	LOCK;	831	LOCK;
707		832
708	if (next->mainstack)	833	if (next->flags & CF_NEW)
709	{	834	{
710	/* coroutine already started */	835	/* need to start coroutine */
711	SAVE (prev, flags);	836	next->flags &= ~CF_NEW;
712	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);
713	}	843	}
714	else	844	else
715	{	845	{
716	/* need to start coroutine */	846	/* coroutine already started */
717	/* first get rid of the old state */	847	save_perl (aTHX_ prev);
718	SAVE (prev, -1);	848	load_perl (aTHX_ next);
719	/* setup coroutine call */
720	setup_coro (next);
721	/* need a stack */
722	next->stack = 0;
723	}	849	}
724		850
725	if (!prev->stack)
726	/* create a new empty context */
727	Newz (0, prev->stack, 1, coro_stack);
728
729	prev__stack = prev->stack;	851	prev__cctx = prev->cctx;
730		852
731	/* possibly "free" the stack */	853	/* possibly "free" the cctx */
732	if (prev__stack->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
733	{	855	{
734	stack_put (prev__stack);	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
735	prev->stack = 0;	859	prev->cctx = 0;
		860
		861	cctx_put (prev__cctx);
		862	prev__cctx->inuse = 0;
736	}	863	}
737		864
738	if (!next->stack)	865	if (!next->cctx)
739	next->stack = stack_get ();
740
741	if (prev__stack != next->stack)
742	{	866	{
743	prev__stack->top_env = PL_top_env;	867	next->cctx = cctx_get (aTHX);
744	PL_top_env = next->stack->top_env;	868	assert (!next->cctx->inuse);
745	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	869	next->cctx->inuse = 1;
746	}	870	}
747		871
		872	if (prev__cctx != next->cctx)
		873	{
		874	prev__cctx->top_env = PL_top_env;
		875	PL_top_env = next->cctx->top_env;
		876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		877	}
		878
748	free_coro_mortal ();	879	free_coro_mortal (aTHX);
749
750	UNLOCK;	880	UNLOCK;
751	}	881	}
752	}	882	}
753		883
754	/* use this function pointer to call the above function */
755	/* this is done to increase chances of the compiler not inlining the call */
756	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
757	void (coro_state_transfer)(struct coro prev, struct coro *next, int flags) = transfer_impl;
758
759	struct transfer_args	884	struct transfer_args
760	{	885	{
761	struct coro prev, next;	886	struct coro prev, next;
762	int flags;
763	};	887	};
764		888
765	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
766		890
		891	/ high level stuff ******************************************************/
		892
767	static void	893	static int
768	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
769	{	895	{
770	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
771	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 */
772		911
773	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
774	{	913	{
775	struct coro temp;	914	struct coro temp;
776		915
777	SAVE ((&temp), TRANSFER_SAVE_ALL);	916	assert (!(coro->flags & CF_RUNNING));
778	LOAD (coro);
779		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
780	destroy_stacks ();	927	coro_destroy_stacks (aTHX);
781		928
782	LOAD ((&temp)); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
783		930
784	coro->mainstack = 0;	931	coro->mainstack = 0;
785	}	932	}
786		933
787	stack_free (coro->stack);	934	cctx_destroy (coro->cctx);
788	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
789	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;
790	}	942	}
791		943
792	static int	944	static int
793	coro_state_clear (pTHX_ SV sv, MAGIC mg)	945	coro_state_free (pTHX_ SV sv, MAGIC mg)
794	{	946	{
795	struct coro coro = (struct coro )mg->mg_ptr;	947	struct coro coro = (struct coro )mg->mg_ptr;
796	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
797		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
798	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
799		957
800	return 0;	958	return 0;
801	}	959	}
802		960
803	static int	961	static int
…		…
808	++coro->refcnt;	966	++coro->refcnt;
809		967
810	return 0;	968	return 0;
811	}	969	}
812		970
813	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	971	static MGVTBL coro_state_vtbl = {
		972	0, 0, 0, 0,
		973	coro_state_free,
		974	0,
		975	#ifdef MGf_DUP
		976	coro_state_dup,
		977	#else
		978	# define MGf_DUP 0
		979	#endif
		980	};
814		981
815	static struct coro *	982	static struct coro *
816	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
817	{	984	{
818	HV *stash;	985	HV *stash;
819	MAGIC *mg;	986	MAGIC *mg;
820		987
821	if (SvROK (coro))	988	if (SvROK (coro))
…		…
827	/* very slow, but rare, check */	994	/* very slow, but rare, check */
828	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
829	croak ("Coro::State object required");	996	croak ("Coro::State object required");
830	}	997	}
831		998
832	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
833	assert (mg->mg_type == PERL_MAGIC_ext);
834	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
835	}	1001	}
836		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
837	static void	1005	static void
838	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)
839	{	1007	{
840	ta->prev = SvSTATE (prev);	1008	ta->prev = SvSTATE (prev_sv);
841	ta->next = SvSTATE (next);	1009	ta->next = SvSTATE (next_sv);
842	ta->flags = flags;
843	}	1010	}
844		1011
845	static void	1012	static void
846	api_transfer (SV prev, SV next, int flags)	1013	api_transfer (SV prev_sv, SV next_sv)
847	{	1014	{
848	dTHX;	1015	dTHX;
849	struct transfer_args ta;	1016	struct transfer_args ta;
850		1017
851	prepare_transfer (&ta, prev, next, flags);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
852	TRANSFER (ta);	1019	TRANSFER (ta);
853	}	1020	}
854		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
855	/ Coro ******************************************************************/	1035	/ Coro ******************************************************************/
856		1036
857	#define PRIO_MAX 3
858	#define PRIO_HIGH 1
859	#define PRIO_NORMAL 0
860	#define PRIO_LOW -1
861	#define PRIO_IDLE -3
862	#define PRIO_MIN -4
863
864	/* for Coro.pm */
865	static GV coro_current, coro_idle;
866	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
867	static int coro_nready;
868
869	static void	1037	static void
870	coro_enq (SV *sv)	1038	coro_enq (pTHX_ SV *coro_sv)
871	{	1039	{
872	int prio;
873
874	if (SvTYPE (sv) != SVt_PVHV)
875	croak ("Coro::ready tried to enqueue something that is not a coroutine");
876
877	prio = SvSTATE (sv)->prio;
878
879	av_push (coro_ready [prio - PRIO_MIN], sv);	1040	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
880	coro_nready++;
881	}	1041	}
882		1042
883	static SV *	1043	static SV *
884	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
885	{	1045	{
886	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
887		1047
888	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
889	if (min_prio < 0)	1049	if (min_prio < 0)
890	min_prio = 0;	1050	min_prio = 0;
891		1051
892	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
893	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
894	{
895	coro_nready--;
896	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
897	}
898		1055
899	return 0;	1056	return 0;
900	}	1057	}
901		1058
902	static void	1059	static int
903	api_ready (SV *coro)	1060	api_ready (SV *coro_sv)
904	{	1061	{
905	dTHX;	1062	dTHX;
		1063	struct coro *coro;
906		1064
907	if (SvROK (coro))	1065	if (SvROK (coro_sv))
908	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;
909		1074
910	LOCK;	1075	LOCK;
911	coro_enq (SvREFCNT_inc (coro));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
912	UNLOCK;	1078	UNLOCK;
913	}
914		1079
		1080	return 1;
		1081	}
		1082
915	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
916	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
917	{	1092	{
918	SV current, prev, *next;	1093	SV prev_sv, next_sv;
919
920	current = GvSV (coro_current);
921		1094
922	for (;;)	1095	for (;;)
923	{	1096	{
924	LOCK;	1097	LOCK;
925	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;
926	UNLOCK;	1130	UNLOCK;
927
928	if (next)
929	break;	1131	break;
930
931	{
932	dSP;
933
934	ENTER;
935	SAVETMPS;
936
937	PUSHMARK (SP);
938	PUTBACK;
939	call_sv (GvSV (coro_idle), G_DISCARD);
940
941	FREETMPS;
942	LEAVE;
943	}	1132	}
944	}
945
946	prev = SvRV (current);
947	SvRV (current) = next;
948		1133
949	/* 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
950	LOCK;	1142	LOCK;
951	free_coro_mortal ();	1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
952	UNLOCK;	1145	UNLOCK;
953	coro_mortal = prev;
954
955	ta->prev = SvSTATE (prev);
956	ta->next = SvSTATE (next);
957	ta->flags = TRANSFER_SAVE_ALL;
958	}	1146	}
959		1147
960	static void	1148	static void
961	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
962	{	1150	{
963	LOCK;	1151	api_ready (coro_current);
964	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
965	UNLOCK;
966
967	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;
968	}	1167	}
969		1168
970	static void	1169	static void
971	api_schedule (void)	1170	api_schedule (void)
972	{	1171	{
973	dTHX;	1172	dTHX;
974	struct transfer_args ta;	1173	struct transfer_args ta;
975		1174
976	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
977	TRANSFER (ta);	1176	TRANSFER (ta);
978	}	1177	}
979		1178
980	static void	1179	static int
981	api_cede (void)	1180	api_cede (void)
982	{	1181	{
983	dTHX;	1182	dTHX;
984	struct transfer_args ta;	1183	struct transfer_args ta;
985		1184
986	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
987	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;
988	}	1209	}
989		1210
990	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
991		1212
992	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
998	#endif	1219	#endif
999	BOOT_PAGESIZE;	1220	BOOT_PAGESIZE;
1000		1221
1001	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1222	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1002		1223
1003	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1004	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1005	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));
1006		1231
1007	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;
1008		1237
1009	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
1010	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
1011		1240
1012	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1020	HV *hv;	1249	HV *hv;
1021	int i;	1250	int i;
1022		1251
1023	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
1024	coro->args = newAV ();	1253	coro->args = newAV ();
		1254	coro->save = CORO_SAVE_DEF;
		1255	coro->flags = CF_NEW;
1025		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
1026	hv = newHV ();	1261	coro->hv = hv = newHV ();
1027	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;
1028	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1029		1264
1030	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1031	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
1032
1033	/coro->mainstack = 0; //actual work is done inside transfer /
1034	/coro->stack = 0;/
1035	}	1267	}
1036	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:
1037	RETVAL	1287	RETVAL
1038		1288
1039	void	1289	void
1040	_set_stacklevel (...)	1290	_set_stacklevel (...)
1041	ALIAS:	1291	ALIAS:
1042	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1043	Coro::schedule = 2	1293	Coro::schedule = 2
1044	Coro::cede = 3	1294	Coro::cede = 3
1045	Coro::Cont::yield = 4	1295	Coro::cede_notself = 4
1046	CODE:	1296	CODE:
1047	{	1297	{
1048	struct transfer_args ta;	1298	struct transfer_args ta;
1049		1299
1050	switch (ix)	1300	switch (ix)
1051	{	1301	{
1052	case 0:	1302	case 0:
1053	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1303	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1054	ta.next = 0;	1304	ta.next = 0;
1055	ta.flags = TRANSFER_SET_STACKLEVEL;
1056	break;	1305	break;
1057		1306
1058	case 1:	1307	case 1:
1059	if (items != 3)	1308	if (items != 2)
1060	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);
1061		1310
1062	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1063	break;	1312	break;
1064		1313
1065	case 2:	1314	case 2:
1066	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1067	break;	1316	break;
1068		1317
1069	case 3:	1318	case 3:
1070	prepare_cede (&ta);	1319	prepare_cede (aTHX_ &ta);
1071	break;	1320	break;
1072		1321
1073	case 4:	1322	case 4:
1074	{	1323	if (!prepare_cede_notself (aTHX_ &ta))
1075	SV *yieldstack;	1324	XSRETURN_EMPTY;
1076	SV *sv;
1077	AV *defav = GvAV (PL_defgv);
1078		1325
1079	yieldstack = *hv_fetch (
1080	(HV *)SvRV (GvSV (coro_current)),
1081	"yieldstack", sizeof ("yieldstack") - 1,
1082	0
1083	);
1084
1085	/* set up @_ -- ugly */
1086	av_clear (defav);
1087	av_fill (defav, items - 1);
1088	while (items--)
1089	av_store (defav, items, SvREFCNT_inc (ST(items)));
1090
1091	sv = av_pop ((AV *)SvRV (yieldstack));
1092	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1093	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1094	ta.flags = 0;
1095	SvREFCNT_dec (sv);
1096	}
1097	break;	1326	break;
1098
1099	}	1327	}
1100		1328
		1329	BARRIER;
1101	TRANSFER (ta);	1330	TRANSFER (ta);
1102	}
1103		1331
1104	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1105	_clone_state_from (SV dst, SV src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1106	CODE:	1338	CODE:
1107	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1108	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1109		1341	RETVAL
1110	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1111
1112	++coro_src->refcnt;
1113	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1114	}
1115
1116	void
1117	_nonlocal_goto (IV nextop)
1118	CODE:
1119	/* uuh, somebody will kill me again for this */
1120	PL_op->op_next = INT2PTR (OP *, nextop);
1121		1342
1122	void	1343	void
1123	_exit (code)	1344	_exit (code)
1124	int code	1345	int code
1125	PROTOTYPE: $	1346	PROTOTYPE: $
1126	CODE:	1347	CODE:
1127	_exit (code);	1348	_exit (code);
1128		1349
		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
		1360	cctx_count ()
		1361	CODE:
		1362	RETVAL = cctx_count;
		1363	OUTPUT:
		1364	RETVAL
		1365
		1366	int
		1367	cctx_idle ()
		1368	CODE:
		1369	RETVAL = cctx_idle;
		1370	OUTPUT:
		1371	RETVAL
		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	SV *
		1434	has_stack (Coro::State coro)
		1435	PROTOTYPE: $
		1436	CODE:
		1437	RETVAL = boolSV (!!coro->cctx);
		1438	OUTPUT:
		1439	RETVAL
		1440
		1441	IV
		1442	rss (Coro::State coro)
		1443	PROTOTYPE: $
		1444	CODE:
		1445	RETVAL = coro_rss (coro);
		1446	OUTPUT:
		1447	RETVAL
		1448
		1449
1129	MODULE = Coro::State PACKAGE = Coro	1450	MODULE = Coro::State PACKAGE = Coro
1130		1451
1131	BOOT:	1452	BOOT:
1132	{	1453	{
1133	int i;	1454	int i;
		1455
		1456	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1457	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1458	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1459
		1460	coro_current = get_sv ("Coro::current", FALSE);
		1461	SvREADONLY_on (coro_current);
1134		1462
1135	coro_stash = gv_stashpv ("Coro", TRUE);	1463	coro_stash = gv_stashpv ("Coro", TRUE);
1136		1464
1137	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1465	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1138	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1466	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1139	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1467	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1140	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1468	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1141	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1469	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1142	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1470	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1143		1471
1144	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1145	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1146
1147	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1472	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1148	coro_ready[i] = newAV ();	1473	coro_ready[i] = newAV ();
1149		1474
1150	{	1475	{
1151	SV *sv = perl_get_sv("Coro::API", 1);	1476	SV *sv = perl_get_sv("Coro::API", 1);
1152		1477
1153	coroapi.schedule = api_schedule;	1478	coroapi.schedule = api_schedule;
		1479	coroapi.save = api_save;
1154	coroapi.cede = api_cede;	1480	coroapi.cede = api_cede;
		1481	coroapi.cede_notself = api_cede_notself;
1155	coroapi.ready = api_ready;	1482	coroapi.ready = api_ready;
		1483	coroapi.is_ready = api_is_ready;
1156	coroapi.nready = &coro_nready;	1484	coroapi.nready = &coro_nready;
1157	coroapi.current = coro_current;	1485	coroapi.current = coro_current;
1158		1486
1159	GCoroAPI = &coroapi;	1487	GCoroAPI = &coroapi;
1160	sv_setiv (sv, (IV)&coroapi);	1488	sv_setiv (sv, (IV)&coroapi);
1161	SvREADONLY_on (sv);	1489	SvREADONLY_on (sv);
1162	}	1490	}
1163	}	1491	}
		1492
		1493	void
		1494	_set_current (SV *current)
		1495	PROTOTYPE: $
		1496	CODE:
		1497	SvREFCNT_dec (SvRV (coro_current));
		1498	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1164		1499
1165	int	1500	int
1166	prio (Coro::State coro, int newprio = 0)	1501	prio (Coro::State coro, int newprio = 0)
1167	ALIAS:	1502	ALIAS:
1168	nice = 1	1503	nice = 1
…		…
1171	RETVAL = coro->prio;	1506	RETVAL = coro->prio;
1172		1507
1173	if (items > 1)	1508	if (items > 1)
1174	{	1509	{
1175	if (ix)	1510	if (ix)
1176	newprio += coro->prio;	1511	newprio = coro->prio - newprio;
1177		1512
1178	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1513	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1179	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1514	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1180		1515
1181	coro->prio = newprio;	1516	coro->prio = newprio;
1182	}	1517	}
1183	}	1518	}
		1519	OUTPUT:
		1520	RETVAL
1184		1521
1185	void	1522	SV *
1186	ready (SV *self)	1523	ready (SV *self)
1187	PROTOTYPE: $	1524	PROTOTYPE: $
1188	CODE:	1525	CODE:
1189	api_ready (self);	1526	RETVAL = boolSV (api_ready (self));
		1527	OUTPUT:
		1528	RETVAL
1190		1529
1191	int	1530	int
1192	nready (...)	1531	nready (...)
1193	PROTOTYPE:	1532	PROTOTYPE:
1194	CODE:	1533	CODE:
1195	RETVAL = coro_nready;	1534	RETVAL = coro_nready;
1196	OUTPUT:	1535	OUTPUT:
1197	RETVAL	1536	RETVAL
1198		1537
		1538	# for async_pool speedup
		1539	void
		1540	_pool_1 (SV *cb)
		1541	CODE:
		1542	{
		1543	int i, len;
		1544	HV hv = (HV )SvRV (coro_current);
		1545	AV *defav = GvAV (PL_defgv);
		1546	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1547	AV *invoke_av;
		1548
		1549	if (!invoke)
		1550	croak ("\3terminate\2\n");
		1551
		1552	hv_store (hv, "desc", sizeof ("desc") - 1,
		1553	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1554
		1555	invoke_av = (AV *)SvRV (invoke);
		1556	len = av_len (invoke_av);
		1557
		1558	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1559
		1560	if (len > 0)
		1561	{
		1562	av_fill (defav, len - 1);
		1563	for (i = 0; i < len; ++i)
		1564	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1565	}
		1566
		1567	SvREFCNT_dec (invoke);
		1568	}
		1569
		1570	void
		1571	_pool_2 (SV *cb)
		1572	CODE:
		1573	{
		1574	struct coro *coro = SvSTATE (coro_current);
		1575
		1576	sv_setsv (cb, &PL_sv_undef);
		1577
		1578	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1579	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1580	croak ("\3terminate\2\n");
		1581
		1582	av_clear (GvAV (PL_defgv));
		1583	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1584	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1585	coro->save = CORO_SAVE_DEF;
		1586	coro->prio = 0;
		1587	av_push (av_async_pool, newSVsv (coro_current));
		1588	}
		1589
		1590
1199	MODULE = Coro::State PACKAGE = Coro::AIO	1591	MODULE = Coro::State PACKAGE = Coro::AIO
1200		1592
1201	SV *	1593	SV *
1202	_get_state ()	1594	_get_state ()
1203	CODE:	1595	CODE:
1204	{	1596	{
1205	struct {	1597	struct io_state *data;
1206	int errorno;
1207	int laststype;
1208	int laststatval;
1209	Stat_t statcache;
1210	} data;
1211		1598
		1599	RETVAL = newSV (sizeof (struct io_state));
		1600	data = (struct io_state *)SvPVX (RETVAL);
		1601	SvCUR_set (RETVAL, sizeof (struct io_state));
		1602	SvPOK_only (RETVAL);
		1603
1212	data.errorno = errno;	1604	data->errorno = errno;
1213	data.laststype = PL_laststype;	1605	data->laststype = PL_laststype;
1214	data.laststatval = PL_laststatval;	1606	data->laststatval = PL_laststatval;
1215	data.statcache = PL_statcache;	1607	data->statcache = PL_statcache;
1216
1217	RETVAL = newSVpvn ((char *)&data, sizeof data);
1218	}	1608	}
1219	OUTPUT:	1609	OUTPUT:
1220	RETVAL	1610	RETVAL
1221		1611
1222	void	1612	void
1223	_set_state (char *data_)	1613	_set_state (char *data_)
1224	PROTOTYPE: $	1614	PROTOTYPE: $
1225	CODE:	1615	CODE:
1226	{	1616	{
1227	struct {	1617	struct io_state data = (void )data_;
1228	int errorno;
1229	int laststype;
1230	int laststatval;
1231	Stat_t statcache;
1232	} data = (void )data_;
1233		1618
1234	errno = data->errorno;	1619	errno = data->errorno;
1235	PL_laststype = data->laststype;	1620	PL_laststype = data->laststype;
1236	PL_laststatval = data->laststatval;	1621	PL_laststatval = data->laststatval;
1237	PL_statcache = data->statcache;	1622	PL_statcache = data->statcache;
1238	}	1623	}
		1624

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Comparing Coro/Coro/State.xs (file contents): Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs. Revision 1.163 by root, Mon Sep 24 18:30:58 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.99 by root, Sun Nov 26 23:53:20 2006 UTC vs.
Revision 1.163 by root, Mon Sep 24 18:30:58 2007 UTC