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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC vs.
Revision 1.166 by root, Wed Sep 26 21:11:28 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45		13	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		14
54	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
55	# include <unistd.h>	16	# include <unistd.h>
56	# include <sys/mman.h>	17	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
72	#else	33	#else
73	# define PAGESIZE 0	34	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
75	#endif	36	#endif
76		37
77	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
79	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
80	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
82		97
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		99
85	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	103	#else
88	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
89	#endif	106	#endif
90		107
91	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
92		109
93	#include "CoroAPI.h"	110	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		111
97	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	116	#else
102	# define LOCK (void)0	117	# define LOCK (void)0
103	# define UNLOCK (void)0	118	# define UNLOCK (void)0
104	#endif	119	#endif
105		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
106	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
108	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
110		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
111	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
112	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_TRACE = 0x02,
		148	CC_NOREUSE = 0x04, /* throw this away after tracing */
		149	};
113		150
114	/* this is a structure representing a c-level coroutine */	151	/* this is a structure representing a c-level coroutine */
115	typedef struct coro_cctx {	152	typedef struct coro_cctx {
116	struct coro_cctx *next;	153	struct coro_cctx *next;
117		154
118	/* the stack */	155	/* the stack */
119	void *sptr;	156	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	157	size_t ssize;
121		158
122	/* cpu state */	159	/* cpu state */
123	void idle_sp; / sp of top-level transfer/schedule/cede call */	160	void idle_sp; / sp of top-level transfer/schedule/cede call */
		161	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
124	JMPENV *top_env;	162	JMPENV *top_env;
125	coro_context cctx;	163	coro_context cctx;
126		164
127	int inuse;
128
129	#if USE_VALGRIND	165	#if CORO_USE_VALGRIND
130	int valgrind_id;	166	int valgrind_id;
131	#endif	167	#endif
		168	unsigned char flags;
132	} coro_cctx;	169	} coro_cctx;
133		170
134	enum {	171	enum {
135	CF_RUNNING = 0x0001, /* coroutine is running */	172	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY = 0x0002, /* coroutine is ready */	173	CF_READY = 0x0002, /* coroutine is ready */
137	CF_NEW = 0x0004, /* ahs never been switched to */	174	CF_NEW = 0x0004, /* has never been switched to */
		175	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
138	};	176	};
139		177
140	/* this is a structure representing a perl-level coroutine */	178	/* this is a structure representing a perl-level coroutine */
141	struct coro {	179	struct coro {
142	/* the c coroutine allocated to this perl coroutine, if any */	180	/* the c coroutine allocated to this perl coroutine, if any */
143	coro_cctx *cctx;	181	coro_cctx *cctx;
144		182
145	/* data associated with this coroutine (initial args) */	183	/* data associated with this coroutine (initial args) */
146	AV *args;	184	AV *args;
147	int refcnt;	185	int refcnt;
148	int flags;	186	int save; /* CORO_SAVE flags */
		187	int flags; /* CF_ flags */
149		188
150	/* optionally saved, might be zero */	189	/* optionally saved, might be zero */
151	AV *defav;	190	AV defav; / @_ */
152	SV *defsv;	191	SV defsv; / $_ */
153	SV *errsv;	192	SV errsv; / $@ */
		193	GV deffh; / default filehandle */
		194	SV irssv; / $/ */
		195	SV irssv_sv; / real $/ cache */
154		196
155	#define VAR(name,type) type name;	197	#define VAR(name,type) type name;
156	# include "state.h"	198	# include "state.h"
157	#undef VAR	199	#undef VAR
158		200
159	/* coro process data */	201	/* coro process data */
160	int prio;	202	int prio;
		203
		204	/* linked list */
		205	struct coro next, prev;
		206	HV hv; / the perl hash associated with this coro, if any */
161	};	207	};
162		208
163	typedef struct coro *Coro__State;	209	typedef struct coro *Coro__State;
164	typedef struct coro *Coro__State_or_hashref;	210	typedef struct coro *Coro__State_or_hashref;
165		211
		212	/ Coro ******************************************************************/
		213
		214	#define PRIO_MAX 3
		215	#define PRIO_HIGH 1
		216	#define PRIO_NORMAL 0
		217	#define PRIO_LOW -1
		218	#define PRIO_IDLE -3
		219	#define PRIO_MIN -4
		220
		221	/* for Coro.pm */
		222	static SV *coro_current;
		223	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		224	static int coro_nready;
		225	static struct coro *coro_first;
		226
		227	/ lowlevel stuff ********************************************************/
		228
166	static AV *	229	static AV *
167	coro_clone_padlist (CV *cv)	230	coro_clone_padlist (pTHX_ CV *cv)
168	{	231	{
169	AV *padlist = CvPADLIST (cv);	232	AV *padlist = CvPADLIST (cv);
170	AV newpadlist, newpad;	233	AV newpadlist, newpad;
171		234
172	newpadlist = newAV ();	235	newpadlist = newAV ();
…		…
184		247
185	return newpadlist;	248	return newpadlist;
186	}	249	}
187		250
188	static void	251	static void
189	free_padlist (AV *padlist)	252	free_padlist (pTHX_ AV *padlist)
190	{	253	{
191	/* may be during global destruction */	254	/* may be during global destruction */
192	if (SvREFCNT (padlist))	255	if (SvREFCNT (padlist))
193	{	256	{
194	I32 i = AvFILLp (padlist);	257	I32 i = AvFILLp (padlist);
…		…
215	AV *padlist;	278	AV *padlist;
216	AV av = (AV )mg->mg_obj;	279	AV av = (AV )mg->mg_obj;
217		280
218	/* casting is fun. */	281	/* casting is fun. */
219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	282	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
220	free_padlist (padlist);	283	free_padlist (aTHX_ padlist);
221		284
222	SvREFCNT_dec (av);	285	SvREFCNT_dec (av);
223		286
224	return 0;	287	return 0;
225	}	288	}
…		…
235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	298	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
236	: 0	299	: 0
237		300
238	/* the next two functions merely cache the padlists */	301	/* the next two functions merely cache the padlists */
239	static void	302	static void
240	get_padlist (CV *cv)	303	get_padlist (pTHX_ CV *cv)
241	{	304	{
242	MAGIC *mg = CORO_MAGIC (cv);	305	MAGIC *mg = CORO_MAGIC (cv);
243	AV *av;	306	AV *av;
244		307
245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	308	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	309	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247	else	310	else
248	{	311	{
249	#if 0	312	#if CORO_PREFER_PERL_FUNCTIONS
250	/* this is probably cleaner, but also slower? */	313	/* this is probably cleaner, but also slower? */
251	CV *cp = Perl_cv_clone (cv);	314	CV *cp = Perl_cv_clone (cv);
252	CvPADLIST (cv) = CvPADLIST (cp);	315	CvPADLIST (cv) = CvPADLIST (cp);
253	CvPADLIST (cp) = 0;	316	CvPADLIST (cp) = 0;
254	SvREFCNT_dec (cp);	317	SvREFCNT_dec (cp);
255	#else	318	#else
256	CvPADLIST (cv) = coro_clone_padlist (cv);	319	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
257	#endif	320	#endif
258	}	321	}
259	}	322	}
260		323
261	static void	324	static void
262	put_padlist (CV *cv)	325	put_padlist (pTHX_ CV *cv)
263	{	326	{
264	MAGIC *mg = CORO_MAGIC (cv);	327	MAGIC *mg = CORO_MAGIC (cv);
265	AV *av;	328	AV *av;
266		329
267	if (!mg)	330	if (!mg)
…		…
278	av_extend (av, AvMAX (av) + 1);	341	av_extend (av, AvMAX (av) + 1);
279		342
280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	343	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
281	}	344	}
282		345
		346	/ load & save, init *****************************************************/
		347
283	#define SB do {	348	#define SB do {
284	#define SE } while (0)	349	#define SE } while (0)
285		350
286	#define LOAD(state) load_state ((state))
287	#define SAVE(state,flags) save_state ((state),(flags))
288
289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	351	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
290		352
291	static void	353	static void
292	load_state (Coro__State c)	354	load_perl (pTHX_ Coro__State c)
293	{	355	{
294	#define VAR(name,type) PL_ ## name = c->name;	356	#define VAR(name,type) PL_ ## name = c->name;
295	# include "state.h"	357	# include "state.h"
296	#undef VAR	358	#undef VAR
297		359
298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		363	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		364
		365	if (c->irssv)
		366	{
		367	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		368	{
		369	SvREFCNT_dec (c->irssv);
		370	c->irssv = 0;
		371	}
		372	else
		373	{
		374	REPLACE_SV (PL_rs, c->irssv);
		375	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		376	sv_setsv (c->irssv_sv, PL_rs);
		377	}
		378	}
301		379
302	{	380	{
303	dSP;	381	dSP;
304	CV *cv;	382	CV *cv;
305		383
306	/* now do the ugly restore mess */	384	/* now do the ugly restore mess */
307	while ((cv = (CV *)POPs))	385	while ((cv = (CV *)POPs))
308	{	386	{
309	put_padlist (cv); /* mark this padlist as available */	387	put_padlist (aTHX_ cv); /* mark this padlist as available */
310	CvDEPTH (cv) = PTR2IV (POPs);	388	CvDEPTH (cv) = PTR2IV (POPs);
311	CvPADLIST (cv) = (AV *)POPs;	389	CvPADLIST (cv) = (AV *)POPs;
312	}	390	}
313		391
314	PUTBACK;	392	PUTBACK;
315	}	393	}
316	}	394	}
317		395
318	static void	396	static void
319	save_state (Coro__State c, int flags)	397	save_perl (pTHX_ Coro__State c)
320	{	398	{
321	{	399	{
322	dSP;	400	dSP;
323	I32 cxix = cxstack_ix;	401	I32 cxix = cxstack_ix;
324	PERL_CONTEXT *ccstk = cxstack;	402	PERL_CONTEXT *ccstk = cxstack;
…		…
327	/*	405	/*
328	* the worst thing you can imagine happens first - we have to save	406	* the worst thing you can imagine happens first - we have to save
329	* (and reinitialize) all cv's in the whole callchain :(	407	* (and reinitialize) all cv's in the whole callchain :(
330	*/	408	*/
331		409
332	PUSHs (Nullsv);	410	XPUSHs (Nullsv);
333	/* this loop was inspired by pp_caller */	411	/* this loop was inspired by pp_caller */
334	for (;;)	412	for (;;)
335	{	413	{
336	while (cxix >= 0)	414	while (cxix >= 0)
337	{	415	{
338	PERL_CONTEXT *cx = &ccstk[cxix--];	416	PERL_CONTEXT *cx = &ccstk[cxix--];
339		417
340	if (CxTYPE (cx) == CXt_SUB)	418	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
341	{	419	{
342	CV *cv = cx->blk_sub.cv;	420	CV *cv = cx->blk_sub.cv;
343		421
344	if (CvDEPTH (cv))	422	if (CvDEPTH (cv))
345	{	423	{
346	EXTEND (SP, 3);	424	EXTEND (SP, 3);
347
348	PUSHs ((SV *)CvPADLIST (cv));	425	PUSHs ((SV *)CvPADLIST (cv));
349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	426	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
350	PUSHs ((SV *)cv);	427	PUSHs ((SV *)cv);
351		428
352	CvDEPTH (cv) = 0;	429	CvDEPTH (cv) = 0;
353	get_padlist (cv);	430	get_padlist (aTHX_ cv);
354	}	431	}
355	}	432	}
356	#ifdef CXt_FORMAT
357	else if (CxTYPE (cx) == CXt_FORMAT)
358	{
359	/* I never used formats, so how should I know how these are implemented? */
360	/* my bold guess is as a simple, plain sub... */
361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
362	}
363	#endif
364	}	433	}
365		434
366	if (top_si->si_type == PERLSI_MAIN)	435	if (top_si->si_type == PERLSI_MAIN)
367	break;	436	break;
368		437
369	top_si = top_si->si_prev;	438	top_si = top_si->si_prev;
370	ccstk = top_si->si_cxstack;	439	ccstk = top_si->si_cxstack;
371	cxix = top_si->si_cxix;	440	cxix = top_si->si_cxix;
372	}	441	}
373		442
374	PUTBACK;	443	PUTBACK;
375	}	444	}
376		445
377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	446	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	447	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	448	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		449	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		450	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
380		451
381	#define VAR(name,type)c->name = PL_ ## name;	452	#define VAR(name,type)c->name = PL_ ## name;
382	# include "state.h"	453	# include "state.h"
383	#undef VAR	454	#undef VAR
384	}	455	}
…		…
387	* allocate various perl stacks. This is an exact copy	458	* allocate various perl stacks. This is an exact copy
388	* of perl.c:init_stacks, except that it uses less memory	459	* of perl.c:init_stacks, except that it uses less memory
389	* on the (sometimes correct) assumption that coroutines do	460	* on the (sometimes correct) assumption that coroutines do
390	* not usually need a lot of stackspace.	461	* not usually need a lot of stackspace.
391	*/	462	*/
		463	#if CORO_PREFER_PERL_FUNCTIONS
		464	# define coro_init_stacks init_stacks
		465	#else
392	static void	466	static void
393	coro_init_stacks ()	467	coro_init_stacks (pTHX)
394	{	468	{
395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	469	PL_curstackinfo = new_stackinfo(64, 6);
396	PL_curstackinfo->si_type = PERLSI_MAIN;	470	PL_curstackinfo->si_type = PERLSI_MAIN;
397	PL_curstack = PL_curstackinfo->si_stack;	471	PL_curstack = PL_curstackinfo->si_stack;
398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
399		473
400	PL_stack_base = AvARRAY(PL_curstack);	474	PL_stack_base = AvARRAY(PL_curstack);
401	PL_stack_sp = PL_stack_base;	475	PL_stack_sp = PL_stack_base;
402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
403		477
404	New(50,PL_tmps_stack,128,SV*);	478	New(50,PL_tmps_stack,64,SV*);
405	PL_tmps_floor = -1;	479	PL_tmps_floor = -1;
406	PL_tmps_ix = -1;	480	PL_tmps_ix = -1;
407	PL_tmps_max = 128;	481	PL_tmps_max = 64;
408		482
409	New(54,PL_markstack,32,I32);	483	New(54,PL_markstack,16,I32);
410	PL_markstack_ptr = PL_markstack;	484	PL_markstack_ptr = PL_markstack;
411	PL_markstack_max = PL_markstack + 32;	485	PL_markstack_max = PL_markstack + 16;
412		486
413	#ifdef SET_MARK_OFFSET	487	#ifdef SET_MARK_OFFSET
414	SET_MARK_OFFSET;	488	SET_MARK_OFFSET;
415	#endif	489	#endif
416		490
417	New(54,PL_scopestack,32,I32);	491	New(54,PL_scopestack,16,I32);
418	PL_scopestack_ix = 0;	492	PL_scopestack_ix = 0;
419	PL_scopestack_max = 32;	493	PL_scopestack_max = 16;
420		494
421	New(54,PL_savestack,64,ANY);	495	New(54,PL_savestack,64,ANY);
422	PL_savestack_ix = 0;	496	PL_savestack_ix = 0;
423	PL_savestack_max = 64;	497	PL_savestack_max = 64;
424		498
425	#if !PERL_VERSION_ATLEAST (5,9,0)	499	#if !PERL_VERSION_ATLEAST (5,9,0)
426	New(54,PL_retstack,16,OP*);	500	New(54,PL_retstack,4,OP*);
427	PL_retstack_ix = 0;	501	PL_retstack_ix = 0;
428	PL_retstack_max = 16;	502	PL_retstack_max = 4;
429	#endif	503	#endif
430	}	504	}
		505	#endif
431		506
432	/*	507	/*
433	* destroy the stacks, the callchain etc...	508	* destroy the stacks, the callchain etc...
434	*/	509	*/
435	static void	510	static void
436	coro_destroy_stacks ()	511	coro_destroy_stacks (pTHX)
437	{	512	{
438	if (!IN_DESTRUCT)	513	if (!IN_DESTRUCT)
439	{	514	{
440	/* is this ugly, I ask? */	515	/* restore all saved variables and stuff */
441	LEAVE_SCOPE (0);	516	LEAVE_SCOPE (0);
		517	assert (PL_tmps_floor == -1);
442		518
443	/* sure it is, but more important: is it correct?? :/ */	519	/* free all temporaries */
444	FREETMPS;	520	FREETMPS;
		521	assert (PL_tmps_ix == -1);
445		522
		523	/* unwind all extra stacks */
446	/POPSTACK_TO (PL_mainstack);//D//use/	524	POPSTACK_TO (PL_mainstack);
		525
		526	/* unwind main stack */
		527	dounwind (-1);
447	}	528	}
448		529
449	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
450	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
451		532
452	while (PL_curstackinfo)	533	while (PL_curstackinfo)
453	{	534	{
454	PERL_SI *p = PL_curstackinfo->si_prev;	535	PERL_SI *p = PL_curstackinfo->si_prev;
455		536
456	{ /D//remove/
457	dSP;
458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459	PUTBACK; /* possibly superfluous */
460	}
461
462	if (!IN_DESTRUCT)	537	if (!IN_DESTRUCT)
463	{
464	dounwind (-1);/D//remove/
465	SvREFCNT_dec (PL_curstackinfo->si_stack);	538	SvREFCNT_dec (PL_curstackinfo->si_stack);
466	}
467		539
468	Safefree (PL_curstackinfo->si_cxstack);	540	Safefree (PL_curstackinfo->si_cxstack);
469	Safefree (PL_curstackinfo);	541	Safefree (PL_curstackinfo);
470	PL_curstackinfo = p;	542	PL_curstackinfo = p;
471	}	543	}
…		…
477	#if !PERL_VERSION_ATLEAST (5,9,0)	549	#if !PERL_VERSION_ATLEAST (5,9,0)
478	Safefree (PL_retstack);	550	Safefree (PL_retstack);
479	#endif	551	#endif
480	}	552	}
481		553
		554	static size_t
		555	coro_rss (struct coro *coro)
		556	{
		557	size_t rss = sizeof (coro);
		558
		559	if (coro->mainstack)
		560	{
		561	if (coro->flags & CF_RUNNING)
		562	{
		563	#define VAR(name,type)coro->name = PL_ ## name;
		564	# include "state.h"
		565	#undef VAR
		566	}
		567
		568	rss += sizeof (coro->curstackinfo);
		569	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		570	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		571	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		572	rss += coro->tmps_max * sizeof (SV *);
		573	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		574	rss += coro->scopestack_max * sizeof (I32);
		575	rss += coro->savestack_max * sizeof (ANY);
		576
		577	#if !PERL_VERSION_ATLEAST (5,9,0)
		578	rss += coro->retstack_max * sizeof (OP *);
		579	#endif
		580	}
		581
		582	return rss;
		583	}
		584
		585	/ coroutine stack handling **********************************************/
		586
482	static void	587	static void
483	setup_coro (struct coro *coro)	588	setup_coro (pTHX_ struct coro *coro)
484	{	589	{
485	/*	590	/*
486	* emulate part of the perl startup here.	591	* emulate part of the perl startup here.
487	*/	592	*/
488
489	coro_init_stacks ();	593	coro_init_stacks (aTHX);
490		594
491	PL_curcop = &PL_compiling;	595	PL_curcop = &PL_compiling;
492	PL_in_eval = EVAL_NULL;	596	PL_in_eval = EVAL_NULL;
		597	PL_comppad = 0;
493	PL_curpm = 0;	598	PL_curpm = 0;
494	PL_localizing = 0;	599	PL_localizing = 0;
495	PL_dirty = 0;	600	PL_dirty = 0;
496	PL_restartop = 0;	601	PL_restartop = 0;
497		602
498	{	603	{
499	dSP;	604	dSP;
500	LOGOP myop;	605	LOGOP myop;
501		606
502	/* I have no idea why this is needed, but it is */
503	PUSHMARK (SP);
504
505	SvREFCNT_dec (GvAV (PL_defgv));	607	SvREFCNT_dec (GvAV (PL_defgv));
506	GvAV (PL_defgv) = coro->args; coro->args = 0;	608	GvAV (PL_defgv) = coro->args; coro->args = 0;
507		609
508	Zero (&myop, 1, LOGOP);	610	Zero (&myop, 1, LOGOP);
509	myop.op_next = Nullop;	611	myop.op_next = Nullop;
510	myop.op_flags = OPf_WANT_VOID;	612	myop.op_flags = OPf_WANT_VOID;
511		613
		614	PUSHMARK (SP);
		615	XPUSHs (av_shift (GvAV (PL_defgv)));
		616	PUTBACK;
512	PL_op = (OP *)&myop;	617	PL_op = (OP *)&myop;
513
514	PUSHMARK (SP);
515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516	PUTBACK;
517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	618	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518	SPAGAIN;	619	SPAGAIN;
519	}	620	}
520		621
521	ENTER; /* necessary e.g. for dounwind */	622	ENTER; /* necessary e.g. for dounwind */
522	}	623	}
523		624
524	static void	625	static void
525	free_coro_mortal ()	626	free_coro_mortal (pTHX)
526	{	627	{
527	if (coro_mortal)	628	if (coro_mortal)
528	{	629	{
529	SvREFCNT_dec (coro_mortal);	630	SvREFCNT_dec (coro_mortal);
530	coro_mortal = 0;	631	coro_mortal = 0;
531	}	632	}
532	}	633	}
533		634
		635	static void
		636	do_trace (pTHX)
		637	{
		638	if (PL_curcop != &PL_compiling)
		639	{
		640	runops_proc_t old_runops = PL_runops;
		641	dSP;
		642	ENTER;
		643	SAVETMPS;
		644	PUSHMARK (SP);
		645	PUTBACK;
		646	PL_runops = RUNOPS_DEFAULT;
		647	call_pv ("Coro::_do_trace", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD \| G_NOARGS);
		648	PL_runops = old_runops;
		649	SPAGAIN;
		650	FREETMPS;
		651	LEAVE;
		652	PUTBACK;
		653	}
		654	}
		655
		656	static int
		657	runops_coro (pTHX)
		658	{
		659	COP *oldcop = 0;
		660
		661	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		662	{
		663	PERL_ASYNC_CHECK ();
		664
		665	if (oldcop != PL_curcop)
		666	{
		667	oldcop = PL_curcop;
		668	do_trace (aTHX);
		669	}
		670	}
		671
		672	TAINT_NOT;
		673	return 0;
		674	}
		675
		676	/* inject a fake call to Coro::State::_cctx_init into the execution */
		677	/* _cctx_init should be careful, as it could be called at almost any time */
		678	/* during execution of a perl program */
534	static void NOINLINE	679	static void NOINLINE
535	prepare_cctx (coro_cctx *cctx)	680	prepare_cctx (pTHX_ coro_cctx *cctx)
536	{	681	{
537	dSP;	682	dSP;
538	LOGOP myop;	683	LOGOP myop;
539		684
		685	PL_top_env = &PL_start_env;
		686
		687	if (cctx->flags & CC_TRACE)
		688	PL_runops = runops_coro;
		689
540	Zero (&myop, 1, LOGOP);	690	Zero (&myop, 1, LOGOP);
541	myop.op_next = PL_op;	691	myop.op_next = PL_op;
542	myop.op_flags = OPf_WANT_VOID;	692	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
543
544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545		693
546	PUSHMARK (SP);	694	PUSHMARK (SP);
		695	EXTEND (SP, 2);
		696	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	697	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548	PUTBACK;	698	PUTBACK;
		699	PL_op = (OP *)&myop;
549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	700	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550	SPAGAIN;	701	SPAGAIN;
551	}	702	}
552		703
		704	/*
		705	* this is a _very_ stripped down perl interpreter ;)
		706	*/
553	static void	707	static void
554	coro_run (void *arg)	708	coro_run (void *arg)
555	{	709	{
		710	dTHX;
		711
556	/* coro_run is the alternative epilogue of transfer() */	712	/* coro_run is the alternative tail of transfer(), so unlock here. */
557	UNLOCK;	713	UNLOCK;
558		714
		715	/* we now skip the entersub that lead to transfer() */
		716	PL_op = PL_op->op_next;
		717
		718	/* inject a fake subroutine call to cctx_init */
		719	prepare_cctx (aTHX_ (coro_cctx *)arg);
		720
		721	/* somebody or something will hit me for both perl_run and PL_restartop */
		722	PL_restartop = PL_op;
		723	perl_run (PL_curinterp);
		724
559	/*	725	/*
560	* this is a _very_ stripped down perl interpreter ;)	726	* If perl-run returns we assume exit() was being called or the coro
		727	* fell off the end, which seems to be the only valid (non-bug)
		728	* reason for perl_run to return. We try to exit by jumping to the
		729	* bootstrap-time "top" top_env, as we cannot restore the "main"
		730	* coroutine as Coro has no such concept
561	*/	731	*/
562	PL_top_env = &PL_start_env;	732	PL_top_env = main_top_env;
563		733	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
564	/* inject call to cctx_init */
565	prepare_cctx ((coro_cctx *)arg);
566
567	/* somebody will hit me for both perl_run and PL_restartop */
568	perl_run (PL_curinterp);
569
570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571	abort ();
572	}	734	}
573		735
574	static coro_cctx *	736	static coro_cctx *
575	cctx_new ()	737	cctx_new ()
576	{	738	{
577	coro_cctx *cctx;	739	coro_cctx *cctx;
		740	void *stack_start;
		741	size_t stack_size;
578		742
579	++cctx_count;	743	++cctx_count;
580		744
581	New (0, cctx, 1, coro_cctx);	745	Newz (0, cctx, 1, coro_cctx);
582		746
583	#if HAVE_MMAP	747	#if HAVE_MMAP
584		748
585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	749	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
586	/* mmap suppsedly does allocate-on-write for us */	750	/* mmap supposedly does allocate-on-write for us */
587	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	751	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588		752
589	if (cctx->sptr == (void *)-1)	753	if (cctx->sptr != (void *)-1)
590	{
591	perror ("FATAL: unable to mmap stack for coroutine");
592	_exit (EXIT_FAILURE);
593	}	754	{
594
595	# if STACKGUARD	755	# if CORO_STACKGUARD
596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	756	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
597	# endif	757	# endif
		758	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		759	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		760	cctx->flags \|= CC_MAPPED;
		761	}
		762	else
		763	#endif
		764	{
		765	cctx->ssize = coro_stacksize * (long)sizeof (long);
		766	New (0, cctx->sptr, coro_stacksize, long);
598		767
599	#else
600
601	cctx->ssize = STACKSIZE * (long)sizeof (long);
602	New (0, cctx->sptr, STACKSIZE, long);
603
604	if (!cctx->sptr)	768	if (!cctx->sptr)
605	{	769	{
606	perror ("FATAL: unable to malloc stack for coroutine");	770	perror ("FATAL: unable to allocate stack for coroutine");
607	_exit (EXIT_FAILURE);	771	_exit (EXIT_FAILURE);
608	}	772	}
609		773
610	#endif	774	stack_start = cctx->sptr;
		775	stack_size = cctx->ssize;
		776	}
611		777
612	#if USE_VALGRIND	778	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
613	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
614	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
615	cctx->ssize + (char *)cctx->sptr
616	);
617	#endif
618
619	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	779	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
620		780
621	return cctx;	781	return cctx;
622	}	782	}
623		783
624	static void	784	static void
…		…
627	if (!cctx)	787	if (!cctx)
628	return;	788	return;
629		789
630	--cctx_count;	790	--cctx_count;
631		791
632	#if USE_VALGRIND	792	#if CORO_USE_VALGRIND
633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	793	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
634	#endif	794	#endif
635		795
636	#if HAVE_MMAP	796	#if HAVE_MMAP
		797	if (cctx->flags & CC_MAPPED)
637	munmap (cctx->sptr, cctx->ssize);	798	munmap (cctx->sptr, cctx->ssize);
638	#else	799	else
		800	#endif
639	Safefree (cctx->sptr);	801	Safefree (cctx->sptr);
640	#endif
641		802
642	Safefree (cctx);	803	Safefree (cctx);
643	}	804	}
644		805
645	static coro_cctx *	806	static coro_cctx *
646	cctx_get ()	807	cctx_get (pTHX)
647	{	808	{
648	coro_cctx *cctx;
649
650	if (cctx_first)	809	while (cctx_first)
651	{	810	{
652	cctx = cctx_first;	811	coro_cctx *cctx = cctx_first;
653	cctx_first = cctx->next;	812	cctx_first = cctx->next;
654	--cctx_idle;	813	--cctx_idle;
655	}	814
656	else	815	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
657	{	816	return cctx;
658	cctx = cctx_new ();	817
659	PL_op = PL_op->op_next;	818	cctx_destroy (cctx);
660	}	819	}
661		820
662	return cctx;	821	return cctx_new ();
663	}	822	}
664		823
665	static void	824	static void
666	cctx_put (coro_cctx *cctx)	825	cctx_put (coro_cctx *cctx)
667	{	826	{
…		…
670	{	829	{
671	coro_cctx *first = cctx_first;	830	coro_cctx *first = cctx_first;
672	cctx_first = first->next;	831	cctx_first = first->next;
673	--cctx_idle;	832	--cctx_idle;
674		833
675	assert (!first->inuse);
676	cctx_destroy (first);	834	cctx_destroy (first);
677	}	835	}
678		836
679	++cctx_idle;	837	++cctx_idle;
680	cctx->next = cctx_first;	838	cctx->next = cctx_first;
681	cctx_first = cctx;	839	cctx_first = cctx;
682	}	840	}
683		841
		842	/ coroutine switching ***************************************************/
		843
684	/* never call directly, always through the coro_state_transfer global variable */	844	/* never call directly, always through the coro_state_transfer global variable */
685	static void NOINLINE	845	static void NOINLINE
686	transfer (struct coro prev, struct coro next, int flags)	846	transfer (pTHX_ struct coro prev, struct coro next)
687	{	847	{
688	dSTACKLEVEL;	848	dSTACKLEVEL;
689		849
690	/* sometimes transfer is only called to set idle_sp */	850	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	851	if (!next)
		852	{
692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	853	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		854	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		855	}
693	else if (prev != next)	856	else if (prev != next)
694	{	857	{
695	coro_cctx *prev__cctx;	858	coro_cctx *prev__cctx;
696		859
697	if (prev->flags & CF_NEW)	860	if (prev->flags & CF_NEW)
698	{	861	{
699	/* create a new empty context */	862	/* create a new empty context */
700	Newz (0, prev->cctx, 1, coro_cctx);	863	Newz (0, prev->cctx, 1, coro_cctx);
701	prev->cctx->inuse = 1;
702	prev->flags &= ~CF_NEW;	864	prev->flags &= ~CF_NEW;
703	prev->flags \|= CF_RUNNING;	865	prev->flags \|= CF_RUNNING;
704	}	866	}
705		867
706	/TODO: must not croak here /	868	/TODO: must not croak here /
707	if (!prev->flags & CF_RUNNING)	869	if (!prev->flags & CF_RUNNING)
708	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	870	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
709		871
710	if (next->flags & CF_RUNNING)	872	if (next->flags & CF_RUNNING)
711	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	873	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		874
		875	if (next->flags & CF_DESTROYED)
		876	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
712		877
713	prev->flags &= ~CF_RUNNING;	878	prev->flags &= ~CF_RUNNING;
714	next->flags \|= CF_RUNNING;	879	next->flags \|= CF_RUNNING;
715		880
716	LOCK;	881	LOCK;
…		…
718	if (next->flags & CF_NEW)	883	if (next->flags & CF_NEW)
719	{	884	{
720	/* need to start coroutine */	885	/* need to start coroutine */
721	next->flags &= ~CF_NEW;	886	next->flags &= ~CF_NEW;
722	/* first get rid of the old state */	887	/* first get rid of the old state */
723	SAVE (prev, -1);	888	save_perl (aTHX_ prev);
724	/* setup coroutine call */	889	/* setup coroutine call */
725	setup_coro (next);	890	setup_coro (aTHX_ next);
726	/* need a new stack */
727	assert (!next->stack);
728	}	891	}
729	else	892	else
730	{	893	{
731	/* coroutine already started */	894	/* coroutine already started */
732	SAVE (prev, flags);	895	save_perl (aTHX_ prev);
733	LOAD (next);	896	load_perl (aTHX_ next);
734	}	897	}
735		898
736	prev__cctx = prev->cctx;	899	prev__cctx = prev->cctx;
737		900
738	/* possibly "free" the cctx */	901	/* possibly "free" the cctx */
739	if (prev__cctx->idle_sp == STACKLEVEL && 0)	902	if (prev__cctx->idle_sp == STACKLEVEL)
740	{	903	{
741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	904	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
742	assert (PL_top_env == prev__cctx->top_env);	905	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
743		906
744	prev->cctx = 0;	907	prev->cctx = 0;
745		908
746	cctx_put (prev__cctx);	909	cctx_put (prev__cctx);
747	prev__cctx->inuse = 0;
748	}	910	}
749		911
750	if (!next->cctx)	912	if (!next->cctx)
751	{
752	next->cctx = cctx_get ();	913	next->cctx = cctx_get (aTHX);
753	assert (!next->cctx->inuse);
754	next->cctx->inuse = 1;
755	}
756		914
757	if (prev__cctx != next->cctx)	915	if (prev__cctx != next->cctx)
758	{	916	{
759	prev__cctx->top_env = PL_top_env;	917	prev__cctx->top_env = PL_top_env;
760	PL_top_env = next->cctx->top_env;	918	PL_top_env = next->cctx->top_env;
761	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	919	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
762	}	920	}
763		921
764	free_coro_mortal ();	922	free_coro_mortal (aTHX);
765
766	UNLOCK;	923	UNLOCK;
767	}	924	}
768	}	925	}
769		926
770	struct transfer_args	927	struct transfer_args
771	{	928	{
772	struct coro prev, next;	929	struct coro prev, next;
773	int flags;
774	};	930	};
775		931
776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	932	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
777		933
		934	/ high level stuff ******************************************************/
		935
778	static void	936	static int
779	coro_state_destroy (struct coro *coro)	937	coro_state_destroy (pTHX_ struct coro *coro)
780	{	938	{
781	if (coro->refcnt--)	939	if (coro->flags & CF_DESTROYED)
782	return;	940	return 0;
		941
		942	coro->flags \|= CF_DESTROYED;
		943
		944	if (coro->flags & CF_READY)
		945	{
		946	/* reduce nready, as destroying a ready coro effectively unreadies it */
		947	/* alternative: look through all ready queues and remove the coro */
		948	LOCK;
		949	--coro_nready;
		950	UNLOCK;
		951	}
		952	else
		953	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
783		954
784	if (coro->mainstack && coro->mainstack != main_mainstack)	955	if (coro->mainstack && coro->mainstack != main_mainstack)
785	{	956	{
786	struct coro temp;	957	struct coro temp;
		958
		959	assert (!(coro->flags & CF_RUNNING));
		960
		961	Zero (&temp, 1, struct coro);
		962	temp.save = CORO_SAVE_ALL;
787		963
788	if (coro->flags & CF_RUNNING)	964	if (coro->flags & CF_RUNNING)
789	croak ("FATAL: tried to destroy currently running coroutine");	965	croak ("FATAL: tried to destroy currently running coroutine");
790		966
791	SAVE ((&temp), TRANSFER_SAVE_ALL);	967	save_perl (aTHX_ &temp);
792	LOAD (coro);	968	load_perl (aTHX_ coro);
793		969
794	coro_destroy_stacks ();	970	coro_destroy_stacks (aTHX);
795		971
796	LOAD ((&temp)); /* this will get rid of defsv etc.. */	972	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
797		973
798	coro->mainstack = 0;	974	coro->mainstack = 0;
799	}	975	}
800		976
801	cctx_destroy (coro->cctx);	977	cctx_destroy (coro->cctx);
802	SvREFCNT_dec (coro->args);	978	SvREFCNT_dec (coro->args);
803	Safefree (coro);	979
		980	if (coro->next) coro->next->prev = coro->prev;
		981	if (coro->prev) coro->prev->next = coro->next;
		982	if (coro == coro_first) coro_first = coro->next;
		983
		984	return 1;
804	}	985	}
805		986
806	static int	987	static int
807	coro_state_clear (pTHX_ SV sv, MAGIC mg)	988	coro_state_free (pTHX_ SV sv, MAGIC mg)
808	{	989	{
809	struct coro coro = (struct coro )mg->mg_ptr;	990	struct coro coro = (struct coro )mg->mg_ptr;
810	mg->mg_ptr = 0;	991	mg->mg_ptr = 0;
811		992
		993	coro->hv = 0;
		994
		995	if (--coro->refcnt < 0)
		996	{
812	coro_state_destroy (coro);	997	coro_state_destroy (aTHX_ coro);
		998	Safefree (coro);
		999	}
813		1000
814	return 0;	1001	return 0;
815	}	1002	}
816		1003
817	static int	1004	static int
…		…
824	return 0;	1011	return 0;
825	}	1012	}
826		1013
827	static MGVTBL coro_state_vtbl = {	1014	static MGVTBL coro_state_vtbl = {
828	0, 0, 0, 0,	1015	0, 0, 0, 0,
829	coro_state_clear,	1016	coro_state_free,
830	0,	1017	0,
831	#ifdef MGf_DUP	1018	#ifdef MGf_DUP
832	coro_state_dup,	1019	coro_state_dup,
833	#else	1020	#else
834	# define MGf_DUP 0	1021	# define MGf_DUP 0
835	#endif	1022	#endif
836	};	1023	};
837		1024
838	static struct coro *	1025	static struct coro *
839	SvSTATE (SV *coro)	1026	SvSTATE_ (pTHX_ SV *coro)
840	{	1027	{
841	HV *stash;	1028	HV *stash;
842	MAGIC *mg;	1029	MAGIC *mg;
843		1030
844	if (SvROK (coro))	1031	if (SvROK (coro))
…		…
850	/* very slow, but rare, check */	1037	/* very slow, but rare, check */
851	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1038	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
852	croak ("Coro::State object required");	1039	croak ("Coro::State object required");
853	}	1040	}
854		1041
855	mg = SvMAGIC (coro);	1042	mg = CORO_MAGIC (coro);
856	assert (mg->mg_type == PERL_MAGIC_ext);
857	return (struct coro *)mg->mg_ptr;	1043	return (struct coro *)mg->mg_ptr;
858	}	1044	}
859		1045
		1046	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1047
860	static void	1048	static void
861	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1049	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
862	{	1050	{
863	ta->prev = SvSTATE (prev);	1051	ta->prev = SvSTATE (prev_sv);
864	ta->next = SvSTATE (next);	1052	ta->next = SvSTATE (next_sv);
865	ta->flags = flags;
866	}	1053	}
867		1054
868	static void	1055	static void
869	api_transfer (SV prev, SV next, int flags)	1056	api_transfer (SV prev_sv, SV next_sv)
870	{	1057	{
		1058	dTHX;
871	struct transfer_args ta;	1059	struct transfer_args ta;
872		1060
873	prepare_transfer (&ta, prev, next, flags);	1061	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
874	TRANSFER (ta);	1062	TRANSFER (ta);
875	}	1063	}
876		1064
		1065	static int
		1066	api_save (SV *coro_sv, int new_save)
		1067	{
		1068	dTHX;
		1069	struct coro *coro = SvSTATE (coro_sv);
		1070	int old_save = coro->save;
		1071
		1072	if (new_save >= 0)
		1073	coro->save = new_save;
		1074
		1075	return old_save;
		1076	}
		1077
877	/ Coro ******************************************************************/	1078	/ Coro ******************************************************************/
878		1079
879	#define PRIO_MAX 3
880	#define PRIO_HIGH 1
881	#define PRIO_NORMAL 0
882	#define PRIO_LOW -1
883	#define PRIO_IDLE -3
884	#define PRIO_MIN -4
885
886	/* for Coro.pm */
887	static SV *coro_current;
888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
889	static int coro_nready;
890
891	static void	1080	static void
892	coro_enq (SV *coro_sv)	1081	coro_enq (pTHX_ SV *coro_sv)
893	{	1082	{
894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1083	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
895	coro_nready++;
896	}	1084	}
897		1085
898	static SV *	1086	static SV *
899	coro_deq (int min_prio)	1087	coro_deq (pTHX_ int min_prio)
900	{	1088	{
901	int prio = PRIO_MAX - PRIO_MIN;	1089	int prio = PRIO_MAX - PRIO_MIN;
902		1090
903	min_prio -= PRIO_MIN;	1091	min_prio -= PRIO_MIN;
904	if (min_prio < 0)	1092	if (min_prio < 0)
905	min_prio = 0;	1093	min_prio = 0;
906		1094
907	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1095	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
908	if (AvFILLp (coro_ready [prio]) >= 0)	1096	if (AvFILLp (coro_ready [prio]) >= 0)
909	{
910	coro_nready--;
911	return av_shift (coro_ready [prio]);	1097	return av_shift (coro_ready [prio]);
912	}
913		1098
914	return 0;	1099	return 0;
915	}	1100	}
916		1101
917	static int	1102	static int
918	api_ready (SV *coro_sv)	1103	api_ready (SV *coro_sv)
919	{	1104	{
		1105	dTHX;
920	struct coro *coro;	1106	struct coro *coro;
921		1107
922	if (SvROK (coro_sv))	1108	if (SvROK (coro_sv))
923	coro_sv = SvRV (coro_sv);	1109	coro_sv = SvRV (coro_sv);
924		1110
925	coro = SvSTATE (coro_sv);	1111	coro = SvSTATE (coro_sv);
926		1112
927	if (coro->flags & CF_READY)	1113	if (coro->flags & CF_READY)
928	return 0;	1114	return 0;
929		1115
930	#if 0 /* this is actually harmless */
931	if (coro->flags & CF_RUNNING)
932	croak ("Coro::ready called on currently running coroutine");
933	#endif
934
935	coro->flags \|= CF_READY;	1116	coro->flags \|= CF_READY;
936		1117
937	LOCK;	1118	LOCK;
938	coro_enq (SvREFCNT_inc (coro_sv));	1119	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1120	++coro_nready;
939	UNLOCK;	1121	UNLOCK;
940		1122
941	return 1;	1123	return 1;
942	}	1124	}
943		1125
944	static int	1126	static int
945	api_is_ready (SV *coro_sv)	1127	api_is_ready (SV *coro_sv)
946	{	1128	{
		1129	dTHX;
947	return !!SvSTATE (coro_sv)->flags & CF_READY;	1130	return !!(SvSTATE (coro_sv)->flags & CF_READY);
948	}	1131	}
949		1132
950	static void	1133	static void
951	prepare_schedule (struct transfer_args *ta)	1134	prepare_schedule (pTHX_ struct transfer_args *ta)
952	{	1135	{
953	SV prev, next;	1136	SV prev_sv, next_sv;
954		1137
955	for (;;)	1138	for (;;)
956	{	1139	{
957	LOCK;	1140	LOCK;
958	next = coro_deq (PRIO_MIN);	1141	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1142
		1143	/* nothing to schedule: call the idle handler */
		1144	if (!next_sv)
		1145	{
		1146	dSP;
		1147	UNLOCK;
		1148
		1149	ENTER;
		1150	SAVETMPS;
		1151
		1152	PUSHMARK (SP);
		1153	PUTBACK;
		1154	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1155
		1156	FREETMPS;
		1157	LEAVE;
		1158	continue;
		1159	}
		1160
		1161	ta->next = SvSTATE (next_sv);
		1162
		1163	/* cannot transfer to destroyed coros, skip and look for next */
		1164	if (ta->next->flags & CF_DESTROYED)
		1165	{
		1166	UNLOCK;
		1167	SvREFCNT_dec (next_sv);
		1168	/* coro_nready is already taken care of by destroy */
		1169	continue;
		1170	}
		1171
		1172	--coro_nready;
959	UNLOCK;	1173	UNLOCK;
960
961	if (next)
962	break;	1174	break;
963
964	{
965	dSP;
966
967	ENTER;
968	SAVETMPS;
969
970	PUSHMARK (SP);
971	PUTBACK;
972	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
973
974	FREETMPS;
975	LEAVE;
976	}	1175	}
977	}
978
979	prev = SvRV (coro_current);
980	SvRV_set (coro_current, next);
981		1176
982	/* free this only after the transfer */	1177	/* free this only after the transfer */
		1178	prev_sv = SvRV (coro_current);
		1179	SvRV_set (coro_current, next_sv);
		1180	ta->prev = SvSTATE (prev_sv);
		1181
		1182	assert (ta->next->flags & CF_READY);
		1183	ta->next->flags &= ~CF_READY;
		1184
983	LOCK;	1185	LOCK;
984	free_coro_mortal ();	1186	free_coro_mortal (aTHX);
		1187	coro_mortal = prev_sv;
985	UNLOCK;	1188	UNLOCK;
986	coro_mortal = prev;
987
988	assert (!SvROK(prev));//D
989	assert (!SvROK(next));//D
990
991	ta->prev = SvSTATE (prev);
992	ta->next = SvSTATE (next);
993	ta->flags = TRANSFER_SAVE_ALL;
994
995	assert (ta->flags & CF_READY);
996	ta->next->flags &= ~CF_READY;
997	}	1189	}
998		1190
999	static void	1191	static void
1000	prepare_cede (struct transfer_args *ta)	1192	prepare_cede (pTHX_ struct transfer_args *ta)
1001	{	1193	{
1002	api_ready (coro_current);	1194	api_ready (coro_current);
1003
1004	prepare_schedule (ta);	1195	prepare_schedule (aTHX_ ta);
		1196	}
		1197
		1198	static int
		1199	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1200	{
		1201	if (coro_nready)
		1202	{
		1203	SV *prev = SvRV (coro_current);
		1204	prepare_schedule (aTHX_ ta);
		1205	api_ready (prev);
		1206	return 1;
		1207	}
		1208	else
		1209	return 0;
1005	}	1210	}
1006		1211
1007	static void	1212	static void
1008	api_schedule (void)	1213	api_schedule (void)
1009	{	1214	{
		1215	dTHX;
1010	struct transfer_args ta;	1216	struct transfer_args ta;
1011		1217
1012	prepare_schedule (&ta);	1218	prepare_schedule (aTHX_ &ta);
1013	TRANSFER (ta);	1219	TRANSFER (ta);
1014	}	1220	}
1015		1221
1016	static void	1222	static int
1017	api_cede (void)	1223	api_cede (void)
1018	{	1224	{
		1225	dTHX;
1019	struct transfer_args ta;	1226	struct transfer_args ta;
1020		1227
1021	prepare_cede (&ta);	1228	prepare_cede (aTHX_ &ta);
		1229
		1230	if (ta.prev != ta.next)
		1231	{
1022	TRANSFER (ta);	1232	TRANSFER (ta);
		1233	return 1;
		1234	}
		1235	else
		1236	return 0;
		1237	}
		1238
		1239	static int
		1240	api_cede_notself (void)
		1241	{
		1242	dTHX;
		1243	struct transfer_args ta;
		1244
		1245	if (prepare_cede_notself (aTHX_ &ta))
		1246	{
		1247	TRANSFER (ta);
		1248	return 1;
		1249	}
		1250	else
		1251	return 0;
1023	}	1252	}
1024		1253
1025	MODULE = Coro::State PACKAGE = Coro::State	1254	MODULE = Coro::State PACKAGE = Coro::State
1026		1255
1027	PROTOTYPES: DISABLE	1256	PROTOTYPES: DISABLE
…		…
1033	#endif	1262	#endif
1034	BOOT_PAGESIZE;	1263	BOOT_PAGESIZE;
1035		1264
1036	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1265	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1037		1266
1038	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1267	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1039	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1268	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1040	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1269	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1270	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1271	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1272	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1273	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1041		1274
1042	main_mainstack = PL_mainstack;	1275	main_mainstack = PL_mainstack;
		1276	main_top_env = PL_top_env;
		1277
		1278	while (main_top_env->je_prev)
		1279	main_top_env = main_top_env->je_prev;
1043		1280
1044	coroapi.ver = CORO_API_VERSION;	1281	coroapi.ver = CORO_API_VERSION;
1045	coroapi.transfer = api_transfer;	1282	coroapi.transfer = api_transfer;
1046		1283
1047	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1284	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1055	HV *hv;	1292	HV *hv;
1056	int i;	1293	int i;
1057		1294
1058	Newz (0, coro, 1, struct coro);	1295	Newz (0, coro, 1, struct coro);
1059	coro->args = newAV ();	1296	coro->args = newAV ();
		1297	coro->save = CORO_SAVE_DEF;
1060	coro->flags = CF_NEW;	1298	coro->flags = CF_NEW;
1061		1299
		1300	if (coro_first) coro_first->prev = coro;
		1301	coro->next = coro_first;
		1302	coro_first = coro;
		1303
1062	hv = newHV ();	1304	coro->hv = hv = newHV ();
1063	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1305	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1306	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1065		1307
1066	for (i = 1; i < items; i++)	1308	for (i = 1; i < items; i++)
1067	av_push (coro->args, newSVsv (ST (i)));	1309	av_push (coro->args, newSVsv (ST (i)));
1068	}	1310	}
1069	OUTPUT:	1311	OUTPUT:
		1312	RETVAL
		1313
		1314	int
		1315	save (SV *coro, int new_save = -1)
		1316	CODE:
		1317	RETVAL = api_save (coro, new_save);
		1318	OUTPUT:
		1319	RETVAL
		1320
		1321	int
		1322	save_also (SV *coro_sv, int save_also)
		1323	CODE:
		1324	{
		1325	struct coro *coro = SvSTATE (coro_sv);
		1326	RETVAL = coro->save;
		1327	coro->save \|= save_also;
		1328	}
		1329	OUTPUT:
1070	RETVAL	1330	RETVAL
1071		1331
1072	void	1332	void
1073	_set_stacklevel (...)	1333	_set_stacklevel (...)
1074	ALIAS:	1334	ALIAS:
1075	Coro::State::transfer = 1	1335	Coro::State::transfer = 1
1076	Coro::schedule = 2	1336	Coro::schedule = 2
1077	Coro::cede = 3	1337	Coro::cede = 3
		1338	Coro::cede_notself = 4
1078	CODE:	1339	CODE:
1079	{	1340	{
1080	struct transfer_args ta;	1341	struct transfer_args ta;
1081		1342
1082	switch (ix)	1343	switch (ix)
1083	{	1344	{
1084	case 0:	1345	case 0:
1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1346	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1086	ta.next = 0;	1347	ta.next = 0;
1087	ta.flags = TRANSFER_SET_STACKLEVEL;
1088	break;	1348	break;
1089		1349
1090	case 1:	1350	case 1:
1091	if (items != 3)	1351	if (items != 2)
1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1352	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1093		1353
1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1354	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1095	break;	1355	break;
1096		1356
1097	case 2:	1357	case 2:
1098	prepare_schedule (&ta);	1358	prepare_schedule (aTHX_ &ta);
1099	break;	1359	break;
1100		1360
1101	case 3:	1361	case 3:
1102	prepare_cede (&ta);	1362	prepare_cede (aTHX_ &ta);
		1363	break;
		1364
		1365	case 4:
		1366	if (!prepare_cede_notself (aTHX_ &ta))
		1367	XSRETURN_EMPTY;
		1368
1103	break;	1369	break;
1104	}	1370	}
1105		1371
		1372	BARRIER;
1106	TRANSFER (ta);	1373	TRANSFER (ta);
1107	}
1108		1374
1109	void	1375	if (GIMME_V != G_VOID && ta.next != ta.prev)
1110	_clone_state_from (SV dst, SV src)	1376	XSRETURN_YES;
		1377	}
		1378
		1379	bool
		1380	_destroy (SV *coro_sv)
1111	CODE:	1381	CODE:
1112	{	1382	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1113	struct coro *coro_src = SvSTATE (src);	1383	OUTPUT:
1114		1384	RETVAL
1115	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1116
1117	++coro_src->refcnt;
1118	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1119	}
1120		1385
1121	void	1386	void
1122	_exit (code)	1387	_exit (code)
1123	int code	1388	int code
1124	PROTOTYPE: $	1389	PROTOTYPE: $
1125	CODE:	1390	CODE:
1126	_exit (code);	1391	_exit (code);
1127		1392
1128	int	1393	int
		1394	cctx_stacksize (int new_stacksize = 0)
		1395	CODE:
		1396	RETVAL = coro_stacksize;
		1397	if (new_stacksize)
		1398	coro_stacksize = new_stacksize;
		1399	OUTPUT:
		1400	RETVAL
		1401
		1402	int
1129	cctx_count ()	1403	cctx_count ()
1130	CODE:	1404	CODE:
1131	RETVAL = cctx_count;	1405	RETVAL = cctx_count;
1132	OUTPUT:	1406	OUTPUT:
1133	RETVAL	1407	RETVAL
…		…
1137	CODE:	1411	CODE:
1138	RETVAL = cctx_idle;	1412	RETVAL = cctx_idle;
1139	OUTPUT:	1413	OUTPUT:
1140	RETVAL	1414	RETVAL
1141		1415
		1416	void
		1417	list ()
		1418	PPCODE:
		1419	{
		1420	struct coro *coro;
		1421	for (coro = coro_first; coro; coro = coro->next)
		1422	if (coro->hv)
		1423	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1424	}
		1425
		1426	void
		1427	call (Coro::State coro, SV *coderef)
		1428	ALIAS:
		1429	eval = 1
		1430	CODE:
		1431	{
		1432	if (coro->mainstack)
		1433	{
		1434	struct coro temp;
		1435	Zero (&temp, 1, struct coro);
		1436	temp.save = CORO_SAVE_ALL;
		1437
		1438	if (!(coro->flags & CF_RUNNING))
		1439	{
		1440	save_perl (aTHX_ &temp);
		1441	load_perl (aTHX_ coro);
		1442	}
		1443
		1444	{
		1445	dSP;
		1446	ENTER;
		1447	SAVETMPS;
		1448	PUSHMARK (SP);
		1449	PUTBACK;
		1450	if (ix)
		1451	eval_sv (coderef, 0);
		1452	else
		1453	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1454	SPAGAIN;
		1455	FREETMPS;
		1456	LEAVE;
		1457	PUTBACK;
		1458	}
		1459
		1460	if (!(coro->flags & CF_RUNNING))
		1461	{
		1462	save_perl (aTHX_ coro);
		1463	load_perl (aTHX_ &temp);
		1464	}
		1465	}
		1466	}
		1467
		1468	SV *
		1469	is_ready (Coro::State coro)
		1470	PROTOTYPE: $
		1471	ALIAS:
		1472	is_ready = CF_READY
		1473	is_running = CF_RUNNING
		1474	is_new = CF_NEW
		1475	is_destroyed = CF_DESTROYED
		1476	CODE:
		1477	RETVAL = boolSV (coro->flags & ix);
		1478	OUTPUT:
		1479	RETVAL
		1480
		1481	void
		1482	trace (Coro::State coro, int enable = 0)
		1483	CODE:
		1484	if (enable)
		1485	{
		1486	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1487	XSRETURN_EMPTY;
		1488
		1489	if (coro->flags & CF_RUNNING)
		1490	croak ("cannot enable tracing on running coroutine");
		1491
		1492	if (coro->cctx)
		1493	croak ("cannot enable tracing on coroutine with custom stack");
		1494
		1495	coro->cctx = cctx_new ();
		1496	coro->cctx->flags \|= CC_TRACE;
		1497	}
		1498	else
		1499	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1500	{
		1501	coro->cctx->flags &= ~CC_TRACE;
		1502	coro->cctx->flags \|= CC_NOREUSE;
		1503	}
		1504
		1505	SV *
		1506	has_stack (Coro::State coro)
		1507	PROTOTYPE: $
		1508	CODE:
		1509	RETVAL = boolSV (!!coro->cctx);
		1510	OUTPUT:
		1511	RETVAL
		1512
		1513	IV
		1514	rss (Coro::State coro)
		1515	PROTOTYPE: $
		1516	CODE:
		1517	RETVAL = coro_rss (coro);
		1518	OUTPUT:
		1519	RETVAL
		1520
		1521
1142	MODULE = Coro::State PACKAGE = Coro	1522	MODULE = Coro::State PACKAGE = Coro
1143		1523
1144	BOOT:	1524	BOOT:
1145	{	1525	{
1146	int i;	1526	int i;
		1527
		1528	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1529	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1530	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1531
		1532	coro_current = get_sv ("Coro::current", FALSE);
		1533	SvREADONLY_on (coro_current);
1147		1534
1148	coro_stash = gv_stashpv ("Coro", TRUE);	1535	coro_stash = gv_stashpv ("Coro", TRUE);
1149		1536
1150	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1537	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1151	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1538	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1539	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1540	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1541	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1542	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1156		1543
1157	coro_current = get_sv ("Coro::current", FALSE);
1158	SvREADONLY_on (coro_current);
1159
1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1544	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1161	coro_ready[i] = newAV ();	1545	coro_ready[i] = newAV ();
1162		1546
1163	{	1547	{
1164	SV *sv = perl_get_sv("Coro::API", 1);	1548	SV *sv = perl_get_sv("Coro::API", 1);
1165		1549
1166	coroapi.schedule = api_schedule;	1550	coroapi.schedule = api_schedule;
		1551	coroapi.save = api_save;
1167	coroapi.cede = api_cede;	1552	coroapi.cede = api_cede;
		1553	coroapi.cede_notself = api_cede_notself;
1168	coroapi.ready = api_ready;	1554	coroapi.ready = api_ready;
1169	coroapi.is_ready = api_is_ready;	1555	coroapi.is_ready = api_is_ready;
1170	coroapi.nready = &coro_nready;	1556	coroapi.nready = &coro_nready;
1171	coroapi.current = coro_current;	1557	coroapi.current = coro_current;
1172		1558
1173	GCoroAPI = &coroapi;	1559	GCoroAPI = &coroapi;
1174	sv_setiv (sv, (IV)&coroapi);	1560	sv_setiv (sv, (IV)&coroapi);
1175	SvREADONLY_on (sv);	1561	SvREADONLY_on (sv);
1176	}	1562	}
1177	}	1563	}
		1564
		1565	void
		1566	_set_current (SV *current)
		1567	PROTOTYPE: $
		1568	CODE:
		1569	SvREFCNT_dec (SvRV (coro_current));
		1570	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1178		1571
1179	int	1572	int
1180	prio (Coro::State coro, int newprio = 0)	1573	prio (Coro::State coro, int newprio = 0)
1181	ALIAS:	1574	ALIAS:
1182	nice = 1	1575	nice = 1
…		…
1185	RETVAL = coro->prio;	1578	RETVAL = coro->prio;
1186		1579
1187	if (items > 1)	1580	if (items > 1)
1188	{	1581	{
1189	if (ix)	1582	if (ix)
1190	newprio += coro->prio;	1583	newprio = coro->prio - newprio;
1191		1584
1192	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1585	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1193	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1586	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1194		1587
1195	coro->prio = newprio;	1588	coro->prio = newprio;
1196	}	1589	}
1197	}	1590	}
		1591	OUTPUT:
		1592	RETVAL
1198		1593
1199	SV *	1594	SV *
1200	ready (SV *self)	1595	ready (SV *self)
1201	PROTOTYPE: $	1596	PROTOTYPE: $
1202	CODE:	1597	CODE:
1203	RETVAL = boolSV (api_ready (self));	1598	RETVAL = boolSV (api_ready (self));
1204	OUTPUT:	1599	OUTPUT:
1205	RETVAL	1600	RETVAL
1206		1601
1207	SV *
1208	is_ready (SV *self)
1209	PROTOTYPE: $
1210	CODE:
1211	RETVAL = boolSV (api_is_ready (self));
1212	OUTPUT:
1213	RETVAL
1214
1215	int	1602	int
1216	nready (...)	1603	nready (...)
1217	PROTOTYPE:	1604	PROTOTYPE:
1218	CODE:	1605	CODE:
1219	RETVAL = coro_nready;	1606	RETVAL = coro_nready;
1220	OUTPUT:	1607	OUTPUT:
1221	RETVAL	1608	RETVAL
1222		1609
		1610	# for async_pool speedup
1223	void	1611	void
1224	_set_current (SV *current)	1612	_pool_1 (SV *cb)
1225	PROTOTYPE: $
1226	CODE:	1613	CODE:
1227	SvREFCNT_dec (SvRV (coro_current));	1614	{
1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1615	int i, len;
		1616	HV hv = (HV )SvRV (coro_current);
		1617	AV *defav = GvAV (PL_defgv);
		1618	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1619	AV *invoke_av;
		1620
		1621	if (!invoke)
		1622	croak ("\3terminate\2\n");
		1623
		1624	hv_store (hv, "desc", sizeof ("desc") - 1,
		1625	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1626
		1627	invoke_av = (AV *)SvRV (invoke);
		1628	len = av_len (invoke_av);
		1629
		1630	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1631
		1632	if (len > 0)
		1633	{
		1634	av_fill (defav, len - 1);
		1635	for (i = 0; i < len; ++i)
		1636	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1637	}
		1638
		1639	SvREFCNT_dec (invoke);
		1640	}
		1641
		1642	void
		1643	_pool_2 (SV *cb)
		1644	CODE:
		1645	{
		1646	struct coro *coro = SvSTATE (coro_current);
		1647
		1648	sv_setsv (cb, &PL_sv_undef);
		1649
		1650	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1651	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1652	croak ("\3terminate\2\n");
		1653
		1654	av_clear (GvAV (PL_defgv));
		1655	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1656	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1657	coro->save = CORO_SAVE_DEF;
		1658	coro->prio = 0;
		1659	av_push (av_async_pool, newSVsv (coro_current));
		1660	}
		1661
1229		1662
1230	MODULE = Coro::State PACKAGE = Coro::AIO	1663	MODULE = Coro::State PACKAGE = Coro::AIO
1231		1664
1232	SV *	1665	SV *
1233	_get_state ()	1666	_get_state ()
1234	CODE:	1667	CODE:
1235	{	1668	{
1236	struct {	1669	struct io_state *data;
1237	int errorno;
1238	int laststype;
1239	int laststatval;
1240	Stat_t statcache;
1241	} data;
1242		1670
		1671	RETVAL = newSV (sizeof (struct io_state));
		1672	data = (struct io_state *)SvPVX (RETVAL);
		1673	SvCUR_set (RETVAL, sizeof (struct io_state));
		1674	SvPOK_only (RETVAL);
		1675
1243	data.errorno = errno;	1676	data->errorno = errno;
1244	data.laststype = PL_laststype;	1677	data->laststype = PL_laststype;
1245	data.laststatval = PL_laststatval;	1678	data->laststatval = PL_laststatval;
1246	data.statcache = PL_statcache;	1679	data->statcache = PL_statcache;
1247
1248	RETVAL = newSVpvn ((char *)&data, sizeof data);
1249	}	1680	}
1250	OUTPUT:	1681	OUTPUT:
1251	RETVAL	1682	RETVAL
1252		1683
1253	void	1684	void
1254	_set_state (char *data_)	1685	_set_state (char *data_)
1255	PROTOTYPE: $	1686	PROTOTYPE: $
1256	CODE:	1687	CODE:
1257	{	1688	{
1258	struct {	1689	struct io_state data = (void )data_;
1259	int errorno;
1260	int laststype;
1261	int laststatval;
1262	Stat_t statcache;
1263	} data = (void )data_;
1264		1690
1265	errno = data->errorno;	1691	errno = data->errorno;
1266	PL_laststype = data->laststype;	1692	PL_laststype = data->laststype;
1267	PL_laststatval = data->laststatval;	1693	PL_laststatval = data->laststatval;
1268	PL_statcache = data->statcache;	1694	PL_statcache = data->statcache;
1269	}	1695	}
		1696

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Comparing Coro/Coro/State.xs (file contents): Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC vs. Revision 1.166 by root, Wed Sep 26 21:11:28 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC vs.
Revision 1.166 by root, Wed Sep 26 21:11:28 2007 UTC