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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.190 by root, Fri Oct 5 20:39:39 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	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84
		85	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		86	# undef CORO_STACKGUARD
		87	#endif
		88
		89	#ifndef CORO_STACKGUARD
		90	# define CORO_STACKGUARD 0
		91	#endif
		92
		93	/* prefer perl internal functions over our own? */
		94	#ifndef CORO_PREFER_PERL_FUNCTIONS
		95	# define CORO_PREFER_PERL_FUNCTIONS 0
		96	#endif
		97
		98	/* The next macros try to return the current stack pointer, in an as
		99	* portable way as possible. */
80	#define dSTACKLEVEL int stacklevel	100	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	101	#define STACKLEVEL ((void *)&stacklevel)
82		102
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	103	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		104
85	#if __GNUC__ >= 3	105	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	106	# define attribute(x) __attribute__(x)
		107	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	108	#else
88	# define attribute(x)	109	# define attribute(x)
		110	# define BARRIER
89	#endif	111	#endif
90		112
91	#define NOINLINE attribute ((noinline))	113	#define NOINLINE attribute ((noinline))
92		114
93	#include "CoroAPI.h"	115	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		116
97	#ifdef USE_ITHREADS	117	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	118	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	119	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	120	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	121	#else
102	# define LOCK (void)0	122	# define LOCK (void)0
103	# define UNLOCK (void)0	123	# define UNLOCK (void)0
104	#endif	124	#endif
105		125
		126	/* helper storage struct for Coro::AIO */
		127	struct io_state
		128	{
		129	int errorno;
		130	I32 laststype;
		131	int laststatval;
		132	Stat_t statcache;
		133	};
		134
		135	static size_t coro_stacksize = CORO_STACKSIZE;
106	static struct CoroAPI coroapi;	136	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	137	static AV main_mainstack; / used to differentiate between $main and others */
		138	static JMPENV *main_top_env;
108	static HV coro_state_stash, coro_stash;	139	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	140	static SV coro_mortal; / will be freed after next transfer */
110		141
		142	static GV irsgv; / $/ */
		143	static GV stdoutgv; / STDOUT /
		144
		145	/* async_pool helper stuff */
		146	static SV *sv_pool_rss;
		147	static SV *sv_pool_size;
		148	static AV *av_async_pool;
		149
111	static struct coro_cctx *cctx_first;	150	static struct coro_cctx *cctx_first;
112	static int cctx_count, cctx_idle;	151	static int cctx_count, cctx_idle;
		152
		153	enum {
		154	CC_MAPPED = 0x01,
		155	CC_NOREUSE = 0x02, /* throw this away after tracing */
		156	CC_TRACE = 0x04,
		157	CC_TRACE_SUB = 0x08, /* trace sub calls */
		158	CC_TRACE_LINE = 0x10, /* trace each statement */
		159	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		160	};
113		161
114	/* this is a structure representing a c-level coroutine */	162	/* this is a structure representing a c-level coroutine */
115	typedef struct coro_cctx {	163	typedef struct coro_cctx {
116	struct coro_cctx *next;	164	struct coro_cctx *next;
117		165
118	/* the stack */	166	/* the stack */
119	void *sptr;	167	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	168	size_t ssize;
121		169
122	/* cpu state */	170	/* cpu state */
123	void idle_sp; / sp of top-level transfer/schedule/cede call */	171	void idle_sp; / sp of top-level transfer/schedule/cede call */
		172	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
124	JMPENV *top_env;	173	JMPENV *top_env;
125	coro_context cctx;	174	coro_context cctx;
126		175
127	int inuse;
128
129	#if USE_VALGRIND	176	#if CORO_USE_VALGRIND
130	int valgrind_id;	177	int valgrind_id;
131	#endif	178	#endif
		179	unsigned char flags;
132	} coro_cctx;	180	} coro_cctx;
133		181
134	enum {	182	enum {
135	CF_RUNNING = 0x0001, /* coroutine is running */	183	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY = 0x0002, /* coroutine is ready */	184	CF_READY = 0x0002, /* coroutine is ready */
137	CF_NEW = 0x0004, /* ahs never been switched to */	185	CF_NEW = 0x0004, /* has never been switched to */
		186	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
138	};	187	};
139		188
140	/* this is a structure representing a perl-level coroutine */	189	/* this is a structure representing a perl-level coroutine */
141	struct coro {	190	struct coro {
142	/* the c coroutine allocated to this perl coroutine, if any */	191	/* the c coroutine allocated to this perl coroutine, if any */
143	coro_cctx *cctx;	192	coro_cctx *cctx;
144		193
145	/* data associated with this coroutine (initial args) */	194	/* data associated with this coroutine (initial args) */
146	AV *args;	195	AV *args;
147	int refcnt;	196	int refcnt;
148	int flags;	197	int flags; /* CF_ flags */
149		198
150	/* optionally saved, might be zero */	199	/* optionally saved, might be zero */
151	AV *defav;	200	AV defav; / @_ */
152	SV *defsv;	201	SV defsv; / $_ */
153	SV *errsv;	202	SV errsv; / $@ */
		203	SV deffh; / default filehandle */
		204	SV irssv; / $/ */
		205	SV irssv_sv; / real $/ cache */
154		206
155	#define VAR(name,type) type name;	207	#define VAR(name,type) type name;
156	# include "state.h"	208	# include "state.h"
157	#undef VAR	209	#undef VAR
158		210
		211	/* statistics */
		212	int usecount; /* number of transfers to this coro */
		213
159	/* coro process data */	214	/* coro process data */
160	int prio;	215	int prio;
		216	//SV *throw;
		217
		218	/* async_pool */
		219	SV *saved_deffh;
		220
		221	/* linked list */
		222	struct coro next, prev;
		223	HV hv; / the perl hash associated with this coro, if any */
161	};	224	};
162		225
163	typedef struct coro *Coro__State;	226	typedef struct coro *Coro__State;
164	typedef struct coro *Coro__State_or_hashref;	227	typedef struct coro *Coro__State_or_hashref;
165		228
		229	/ Coro ******************************************************************/
		230
		231	#define PRIO_MAX 3
		232	#define PRIO_HIGH 1
		233	#define PRIO_NORMAL 0
		234	#define PRIO_LOW -1
		235	#define PRIO_IDLE -3
		236	#define PRIO_MIN -4
		237
		238	/* for Coro.pm */
		239	static SV *coro_current;
		240	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		241	static int coro_nready;
		242	static struct coro *coro_first;
		243
		244	/ lowlevel stuff ********************************************************/
		245
166	static AV *	246	static AV *
167	coro_clone_padlist (CV *cv)	247	coro_clone_padlist (pTHX_ CV *cv)
168	{	248	{
169	AV *padlist = CvPADLIST (cv);	249	AV *padlist = CvPADLIST (cv);
170	AV newpadlist, newpad;	250	AV newpadlist, newpad;
171		251
172	newpadlist = newAV ();	252	newpadlist = newAV ();
…		…
184		264
185	return newpadlist;	265	return newpadlist;
186	}	266	}
187		267
188	static void	268	static void
189	free_padlist (AV *padlist)	269	free_padlist (pTHX_ AV *padlist)
190	{	270	{
191	/* may be during global destruction */	271	/* may be during global destruction */
192	if (SvREFCNT (padlist))	272	if (SvREFCNT (padlist))
193	{	273	{
194	I32 i = AvFILLp (padlist);	274	I32 i = AvFILLp (padlist);
…		…
215	AV *padlist;	295	AV *padlist;
216	AV av = (AV )mg->mg_obj;	296	AV av = (AV )mg->mg_obj;
217		297
218	/* casting is fun. */	298	/* casting is fun. */
219	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	299	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
220	free_padlist (padlist);	300	free_padlist (aTHX_ padlist);
221		301
222	SvREFCNT_dec (av);	302	SvREFCNT_dec (av);
223		303
224	return 0;	304	return 0;
225	}	305	}
…		…
233	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	313	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
234	? SvMAGIC (cv) \	314	? SvMAGIC (cv) \
235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	315	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
236	: 0	316	: 0
237		317
		318	static struct coro *
		319	SvSTATE_ (pTHX_ SV *coro)
		320	{
		321	HV *stash;
		322	MAGIC *mg;
		323
		324	if (SvROK (coro))
		325	coro = SvRV (coro);
		326
		327	if (SvTYPE (coro) != SVt_PVHV)
		328	croak ("Coro::State object required");
		329
		330	stash = SvSTASH (coro);
		331	if (stash != coro_stash && stash != coro_state_stash)
		332	{
		333	/* very slow, but rare, check */
		334	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		335	croak ("Coro::State object required");
		336	}
		337
		338	mg = CORO_MAGIC (coro);
		339	return (struct coro *)mg->mg_ptr;
		340	}
		341
		342	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		343
238	/* the next two functions merely cache the padlists */	344	/* the next two functions merely cache the padlists */
239	static void	345	static void
240	get_padlist (CV *cv)	346	get_padlist (pTHX_ CV *cv)
241	{	347	{
242	MAGIC *mg = CORO_MAGIC (cv);	348	MAGIC *mg = CORO_MAGIC (cv);
243	AV *av;	349	AV *av;
244		350
245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	351	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	352	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247	else	353	else
248	{	354	{
249	#if 0	355	#if CORO_PREFER_PERL_FUNCTIONS
250	/* this is probably cleaner, but also slower? */	356	/* this is probably cleaner, but also slower? */
251	CV *cp = Perl_cv_clone (cv);	357	CV *cp = Perl_cv_clone (cv);
252	CvPADLIST (cv) = CvPADLIST (cp);	358	CvPADLIST (cv) = CvPADLIST (cp);
253	CvPADLIST (cp) = 0;	359	CvPADLIST (cp) = 0;
254	SvREFCNT_dec (cp);	360	SvREFCNT_dec (cp);
255	#else	361	#else
256	CvPADLIST (cv) = coro_clone_padlist (cv);	362	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
257	#endif	363	#endif
258	}	364	}
259	}	365	}
260		366
261	static void	367	static void
262	put_padlist (CV *cv)	368	put_padlist (pTHX_ CV *cv)
263	{	369	{
264	MAGIC *mg = CORO_MAGIC (cv);	370	MAGIC *mg = CORO_MAGIC (cv);
265	AV *av;	371	AV *av;
266		372
267	if (!mg)	373	if (!mg)
…		…
278	av_extend (av, AvMAX (av) + 1);	384	av_extend (av, AvMAX (av) + 1);
279		385
280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	386	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
281	}	387	}
282		388
283	#define SB do {	389	/ load & save, init *****************************************************/
284	#define SE } while (0)
285		390
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
290
291	static void	391	static void
292	load_state (Coro__State c)	392	load_perl (pTHX_ Coro__State c)
293	{	393	{
294	#define VAR(name,type) PL_ ## name = c->name;	394	#define VAR(name,type) PL_ ## name = c->name;
295	# include "state.h"	395	# include "state.h"
296	#undef VAR	396	#undef VAR
297		397
298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	398	GvSV (PL_defgv) = c->defsv;
299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	399	GvAV (PL_defgv) = c->defav;
300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	400	GvSV (PL_errgv) = c->errsv;
		401	GvSV (irsgv) = c->irssv_sv;
301		402
302	{	403	{
303	dSP;	404	dSP;
304	CV *cv;	405	CV *cv;
305		406
306	/* now do the ugly restore mess */	407	/* now do the ugly restore mess */
307	while ((cv = (CV *)POPs))	408	while ((cv = (CV *)POPs))
308	{	409	{
309	put_padlist (cv); /* mark this padlist as available */	410	put_padlist (aTHX_ cv); /* mark this padlist as available */
310	CvDEPTH (cv) = PTR2IV (POPs);	411	CvDEPTH (cv) = PTR2IV (POPs);
311	CvPADLIST (cv) = (AV *)POPs;	412	CvPADLIST (cv) = (AV *)POPs;
312	}	413	}
313		414
314	PUTBACK;	415	PUTBACK;
315	}	416	}
316	}	417	}
317		418
318	static void	419	static void
319	save_state (Coro__State c, int flags)	420	save_perl (pTHX_ Coro__State c)
320	{	421	{
321	{	422	{
322	dSP;	423	dSP;
323	I32 cxix = cxstack_ix;	424	I32 cxix = cxstack_ix;
324	PERL_CONTEXT *ccstk = cxstack;	425	PERL_CONTEXT *ccstk = cxstack;
…		…
327	/*	428	/*
328	* the worst thing you can imagine happens first - we have to save	429	* the worst thing you can imagine happens first - we have to save
329	* (and reinitialize) all cv's in the whole callchain :(	430	* (and reinitialize) all cv's in the whole callchain :(
330	*/	431	*/
331		432
332	PUSHs (Nullsv);	433	XPUSHs (Nullsv);
333	/* this loop was inspired by pp_caller */	434	/* this loop was inspired by pp_caller */
334	for (;;)	435	for (;;)
335	{	436	{
336	while (cxix >= 0)	437	while (cxix >= 0)
337	{	438	{
338	PERL_CONTEXT *cx = &ccstk[cxix--];	439	PERL_CONTEXT *cx = &ccstk[cxix--];
339		440
340	if (CxTYPE (cx) == CXt_SUB)	441	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
341	{	442	{
342	CV *cv = cx->blk_sub.cv;	443	CV *cv = cx->blk_sub.cv;
343		444
344	if (CvDEPTH (cv))	445	if (CvDEPTH (cv))
345	{	446	{
346	EXTEND (SP, 3);	447	EXTEND (SP, 3);
347
348	PUSHs ((SV *)CvPADLIST (cv));	448	PUSHs ((SV *)CvPADLIST (cv));
349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	449	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
350	PUSHs ((SV *)cv);	450	PUSHs ((SV *)cv);
351		451
352	CvDEPTH (cv) = 0;	452	CvDEPTH (cv) = 0;
353	get_padlist (cv);	453	get_padlist (aTHX_ cv);
354	}	454	}
355	}	455	}
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	}	456	}
365		457
366	if (top_si->si_type == PERLSI_MAIN)	458	if (top_si->si_type == PERLSI_MAIN)
367	break;	459	break;
368		460
369	top_si = top_si->si_prev;	461	top_si = top_si->si_prev;
370	ccstk = top_si->si_cxstack;	462	ccstk = top_si->si_cxstack;
371	cxix = top_si->si_cxix;	463	cxix = top_si->si_cxix;
372	}	464	}
373		465
374	PUTBACK;	466	PUTBACK;
375	}	467	}
376		468
377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	469	c->defav = GvAV (PL_defgv);
378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	470	c->defsv = DEFSV;
379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	471	c->errsv = ERRSV;
		472	c->irssv_sv = GvSV (irsgv);
380		473
381	#define VAR(name,type)c->name = PL_ ## name;	474	#define VAR(name,type)c->name = PL_ ## name;
382	# include "state.h"	475	# include "state.h"
383	#undef VAR	476	#undef VAR
384	}	477	}
…		…
387	* allocate various perl stacks. This is an exact copy	480	* allocate various perl stacks. This is an exact copy
388	* of perl.c:init_stacks, except that it uses less memory	481	* of perl.c:init_stacks, except that it uses less memory
389	* on the (sometimes correct) assumption that coroutines do	482	* on the (sometimes correct) assumption that coroutines do
390	* not usually need a lot of stackspace.	483	* not usually need a lot of stackspace.
391	*/	484	*/
		485	#if CORO_PREFER_PERL_FUNCTIONS
		486	# define coro_init_stacks init_stacks
		487	#else
392	static void	488	static void
393	coro_init_stacks ()	489	coro_init_stacks (pTHX)
394	{	490	{
395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	491	PL_curstackinfo = new_stackinfo(64, 6);
396	PL_curstackinfo->si_type = PERLSI_MAIN;	492	PL_curstackinfo->si_type = PERLSI_MAIN;
397	PL_curstack = PL_curstackinfo->si_stack;	493	PL_curstack = PL_curstackinfo->si_stack;
398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	494	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
399		495
400	PL_stack_base = AvARRAY(PL_curstack);	496	PL_stack_base = AvARRAY(PL_curstack);
401	PL_stack_sp = PL_stack_base;	497	PL_stack_sp = PL_stack_base;
402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	498	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
403		499
404	New(50,PL_tmps_stack,128,SV*);	500	New(50,PL_tmps_stack,64,SV*);
405	PL_tmps_floor = -1;	501	PL_tmps_floor = -1;
406	PL_tmps_ix = -1;	502	PL_tmps_ix = -1;
407	PL_tmps_max = 128;	503	PL_tmps_max = 64;
408		504
409	New(54,PL_markstack,32,I32);	505	New(54,PL_markstack,16,I32);
410	PL_markstack_ptr = PL_markstack;	506	PL_markstack_ptr = PL_markstack;
411	PL_markstack_max = PL_markstack + 32;	507	PL_markstack_max = PL_markstack + 16;
412		508
413	#ifdef SET_MARK_OFFSET	509	#ifdef SET_MARK_OFFSET
414	SET_MARK_OFFSET;	510	SET_MARK_OFFSET;
415	#endif	511	#endif
416		512
417	New(54,PL_scopestack,32,I32);	513	New(54,PL_scopestack,16,I32);
418	PL_scopestack_ix = 0;	514	PL_scopestack_ix = 0;
419	PL_scopestack_max = 32;	515	PL_scopestack_max = 16;
420		516
421	New(54,PL_savestack,64,ANY);	517	New(54,PL_savestack,64,ANY);
422	PL_savestack_ix = 0;	518	PL_savestack_ix = 0;
423	PL_savestack_max = 64;	519	PL_savestack_max = 64;
424		520
425	#if !PERL_VERSION_ATLEAST (5,9,0)	521	#if !PERL_VERSION_ATLEAST (5,9,0)
426	New(54,PL_retstack,16,OP*);	522	New(54,PL_retstack,4,OP*);
427	PL_retstack_ix = 0;	523	PL_retstack_ix = 0;
428	PL_retstack_max = 16;	524	PL_retstack_max = 4;
429	#endif	525	#endif
430	}	526	}
		527	#endif
431		528
432	/*	529	/*
433	* destroy the stacks, the callchain etc...	530	* destroy the stacks, the callchain etc...
434	*/	531	*/
435	static void	532	static void
436	coro_destroy_stacks ()	533	coro_destroy_stacks (pTHX)
437	{	534	{
438	if (!IN_DESTRUCT)
439	{
440	/* is this ugly, I ask? */
441	LEAVE_SCOPE (0);
442
443	/* sure it is, but more important: is it correct?? :/ */
444	FREETMPS;
445
446	/POPSTACK_TO (PL_mainstack);//D//use/
447	}
448
449	while (PL_curstackinfo->si_next)	535	while (PL_curstackinfo->si_next)
450	PL_curstackinfo = PL_curstackinfo->si_next;	536	PL_curstackinfo = PL_curstackinfo->si_next;
451		537
452	while (PL_curstackinfo)	538	while (PL_curstackinfo)
453	{	539	{
454	PERL_SI *p = PL_curstackinfo->si_prev;	540	PERL_SI *p = PL_curstackinfo->si_prev;
455		541
456	{ /D//remove/
457	dSP;
458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459	PUTBACK; /* possibly superfluous */
460	}
461
462	if (!IN_DESTRUCT)	542	if (!IN_DESTRUCT)
463	{
464	dounwind (-1);/D//remove/
465	SvREFCNT_dec (PL_curstackinfo->si_stack);	543	SvREFCNT_dec (PL_curstackinfo->si_stack);
466	}
467		544
468	Safefree (PL_curstackinfo->si_cxstack);	545	Safefree (PL_curstackinfo->si_cxstack);
469	Safefree (PL_curstackinfo);	546	Safefree (PL_curstackinfo);
470	PL_curstackinfo = p;	547	PL_curstackinfo = p;
471	}	548	}
…		…
477	#if !PERL_VERSION_ATLEAST (5,9,0)	554	#if !PERL_VERSION_ATLEAST (5,9,0)
478	Safefree (PL_retstack);	555	Safefree (PL_retstack);
479	#endif	556	#endif
480	}	557	}
481		558
482	static void	559	static size_t
483	setup_coro (struct coro *coro)	560	coro_rss (pTHX_ struct coro *coro)
		561	{
		562	size_t rss = sizeof (*coro);
		563
		564	if (coro->mainstack)
		565	{
		566	if (coro->flags & CF_RUNNING)
		567	{
		568	#define VAR(name,type)coro->name = PL_ ## name;
		569	# include "state.h"
		570	#undef VAR
		571	}
		572
		573	rss += sizeof (coro->curstackinfo);
		574	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		575	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		576	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		577	rss += coro->tmps_max * sizeof (SV *);
		578	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		579	rss += coro->scopestack_max * sizeof (I32);
		580	rss += coro->savestack_max * sizeof (ANY);
		581
		582	#if !PERL_VERSION_ATLEAST (5,9,0)
		583	rss += coro->retstack_max * sizeof (OP *);
		584	#endif
		585	}
		586
		587	return rss;
		588	}
		589
		590	/ coroutine stack handling **********************************************/
		591
		592	static void
		593	coro_setup (pTHX_ struct coro *coro)
484	{	594	{
485	/*	595	/*
486	* emulate part of the perl startup here.	596	* emulate part of the perl startup here.
487	*/	597	*/
488
489	coro_init_stacks ();	598	coro_init_stacks (aTHX);
490		599
		600	PL_runops = RUNOPS_DEFAULT;
491	PL_curcop = &PL_compiling;	601	PL_curcop = &PL_compiling;
492	PL_in_eval = EVAL_NULL;	602	PL_in_eval = EVAL_NULL;
		603	PL_comppad = 0;
493	PL_curpm = 0;	604	PL_curpm = 0;
494	PL_localizing = 0;	605	PL_localizing = 0;
495	PL_dirty = 0;	606	PL_dirty = 0;
496	PL_restartop = 0;	607	PL_restartop = 0;
		608
		609	GvSV (PL_defgv) = NEWSV (0, 0);
		610	GvAV (PL_defgv) = coro->args; coro->args = 0;
		611	GvSV (PL_errgv) = NEWSV (0, 0);
		612	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		613	PL_rs = newSVsv (GvSV (irsgv));
		614	PL_defoutgv = SvREFCNT_inc (stdoutgv);
497		615
498	{	616	{
499	dSP;	617	dSP;
500	LOGOP myop;	618	LOGOP myop;
501		619
502	/* I have no idea why this is needed, but it is */
503	PUSHMARK (SP);
504
505	SvREFCNT_dec (GvAV (PL_defgv));
506	GvAV (PL_defgv) = coro->args; coro->args = 0;
507
508	Zero (&myop, 1, LOGOP);	620	Zero (&myop, 1, LOGOP);
509	myop.op_next = Nullop;	621	myop.op_next = Nullop;
510	myop.op_flags = OPf_WANT_VOID;	622	myop.op_flags = OPf_WANT_VOID;
511		623
		624	PUSHMARK (SP);
		625	XPUSHs (av_shift (GvAV (PL_defgv)));
		626	PUTBACK;
512	PL_op = (OP *)&myop;	627	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);	628	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518	SPAGAIN;	629	SPAGAIN;
519	}	630	}
520		631
521	ENTER; /* necessary e.g. for dounwind */	632	ENTER; /* necessary e.g. for dounwind */
522	}	633	}
523		634
524	static void	635	static void
		636	coro_destroy (pTHX_ struct coro *coro)
		637	{
		638	if (!IN_DESTRUCT)
		639	{
		640	/* restore all saved variables and stuff */
		641	LEAVE_SCOPE (0);
		642	assert (PL_tmps_floor == -1);
		643
		644	/* free all temporaries */
		645	FREETMPS;
		646	assert (PL_tmps_ix == -1);
		647
		648	/* unwind all extra stacks */
		649	POPSTACK_TO (PL_mainstack);
		650
		651	/* unwind main stack */
		652	dounwind (-1);
		653	}
		654
		655	SvREFCNT_dec (GvSV (PL_defgv));
		656	SvREFCNT_dec (GvAV (PL_defgv));
		657	SvREFCNT_dec (GvSV (PL_errgv));
		658	SvREFCNT_dec (PL_defoutgv);
		659	SvREFCNT_dec (PL_rs);
		660	SvREFCNT_dec (GvSV (irsgv));
		661
		662	SvREFCNT_dec (coro->saved_deffh);
		663	//SvREFCNT_dec (coro->throw);
		664
		665	coro_destroy_stacks (aTHX);
		666	}
		667
		668	static void
525	free_coro_mortal ()	669	free_coro_mortal (pTHX)
526	{	670	{
527	if (coro_mortal)	671	if (coro_mortal)
528	{	672	{
529	SvREFCNT_dec (coro_mortal);	673	SvREFCNT_dec (coro_mortal);
530	coro_mortal = 0;	674	coro_mortal = 0;
531	}	675	}
532	}	676	}
533		677
		678	static int
		679	runops_trace (pTHX)
		680	{
		681	COP *oldcop = 0;
		682	int oldcxix = -2;
		683	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		684	coro_cctx *cctx = coro->cctx;
		685
		686	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		687	{
		688	PERL_ASYNC_CHECK ();
		689
		690	if (cctx->flags & CC_TRACE_ALL)
		691	{
		692	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		693	{
		694	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		695	SV bot, top;
		696	AV av = newAV (); / return values */
		697	SV **cb;
		698	dSP;
		699
		700	GV *gv = CvGV (cx->blk_sub.cv);
		701	SV *fullname = sv_2mortal (newSV (0));
		702	if (isGV (gv))
		703	gv_efullname3 (fullname, gv, 0);
		704
		705	bot = PL_stack_base + cx->blk_oldsp + 1;
		706	top = cx->blk_gimme == G_ARRAY ? SP + 1
		707	: cx->blk_gimme == G_SCALAR ? bot + 1
		708	: bot;
		709
		710	while (bot < top)
		711	av_push (av, SvREFCNT_inc (*bot++));
		712
		713	PL_runops = RUNOPS_DEFAULT;
		714	ENTER;
		715	SAVETMPS;
		716	EXTEND (SP, 3);
		717	PUSHMARK (SP);
		718	PUSHs (&PL_sv_no);
		719	PUSHs (fullname);
		720	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		721	PUTBACK;
		722	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		723	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		724	SPAGAIN;
		725	FREETMPS;
		726	LEAVE;
		727	PL_runops = runops_trace;
		728	}
		729
		730	if (oldcop != PL_curcop)
		731	{
		732	oldcop = PL_curcop;
		733
		734	if (PL_curcop != &PL_compiling)
		735	{
		736	SV **cb;
		737
		738	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		739	{
		740	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		741
		742	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		743	{
		744	runops_proc_t old_runops = PL_runops;
		745	dSP;
		746	GV *gv = CvGV (cx->blk_sub.cv);
		747	SV *fullname = sv_2mortal (newSV (0));
		748
		749	if (isGV (gv))
		750	gv_efullname3 (fullname, gv, 0);
		751
		752	PL_runops = RUNOPS_DEFAULT;
		753	ENTER;
		754	SAVETMPS;
		755	EXTEND (SP, 3);
		756	PUSHMARK (SP);
		757	PUSHs (&PL_sv_yes);
		758	PUSHs (fullname);
		759	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		760	PUTBACK;
		761	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		762	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		763	SPAGAIN;
		764	FREETMPS;
		765	LEAVE;
		766	PL_runops = runops_trace;
		767	}
		768
		769	oldcxix = cxstack_ix;
		770	}
		771
		772	if (cctx->flags & CC_TRACE_LINE)
		773	{
		774	dSP;
		775
		776	PL_runops = RUNOPS_DEFAULT;
		777	ENTER;
		778	SAVETMPS;
		779	EXTEND (SP, 3);
		780	PL_runops = RUNOPS_DEFAULT;
		781	PUSHMARK (SP);
		782	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		783	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		784	PUTBACK;
		785	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		786	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		787	SPAGAIN;
		788	FREETMPS;
		789	LEAVE;
		790	PL_runops = runops_trace;
		791	}
		792	}
		793	}
		794	}
		795	}
		796
		797	TAINT_NOT;
		798	return 0;
		799	}
		800
		801	/* inject a fake call to Coro::State::_cctx_init into the execution */
		802	/* _cctx_init should be careful, as it could be called at almost any time */
		803	/* during execution of a perl program */
534	static void NOINLINE	804	static void NOINLINE
535	prepare_cctx (coro_cctx *cctx)	805	prepare_cctx (pTHX_ coro_cctx *cctx)
536	{	806	{
537	dSP;	807	dSP;
538	LOGOP myop;	808	LOGOP myop;
539		809
		810	PL_top_env = &PL_start_env;
		811
		812	if (cctx->flags & CC_TRACE)
		813	PL_runops = runops_trace;
		814
540	Zero (&myop, 1, LOGOP);	815	Zero (&myop, 1, LOGOP);
541	myop.op_next = PL_op;	816	myop.op_next = PL_op;
542	myop.op_flags = OPf_WANT_VOID;	817	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
543
544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545		818
546	PUSHMARK (SP);	819	PUSHMARK (SP);
		820	EXTEND (SP, 2);
		821	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	822	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548	PUTBACK;	823	PUTBACK;
		824	PL_op = (OP *)&myop;
549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	825	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550	SPAGAIN;	826	SPAGAIN;
551	}	827	}
552		828
		829	/*
		830	* this is a _very_ stripped down perl interpreter ;)
		831	*/
553	static void	832	static void
554	coro_run (void *arg)	833	coro_run (void *arg)
555	{	834	{
		835	dTHX;
		836
556	/* coro_run is the alternative epilogue of transfer() */	837	/* coro_run is the alternative tail of transfer(), so unlock here. */
557	UNLOCK;	838	UNLOCK;
558		839
		840	/* we now skip the entersub that lead to transfer() */
		841	PL_op = PL_op->op_next;
		842
		843	/* inject a fake subroutine call to cctx_init */
		844	prepare_cctx (aTHX_ (coro_cctx *)arg);
		845
		846	/* somebody or something will hit me for both perl_run and PL_restartop */
		847	PL_restartop = PL_op;
		848	perl_run (PL_curinterp);
		849
559	/*	850	/*
560	* this is a _very_ stripped down perl interpreter ;)	851	* If perl-run returns we assume exit() was being called or the coro
		852	* fell off the end, which seems to be the only valid (non-bug)
		853	* reason for perl_run to return. We try to exit by jumping to the
		854	* bootstrap-time "top" top_env, as we cannot restore the "main"
		855	* coroutine as Coro has no such concept
561	*/	856	*/
562	PL_top_env = &PL_start_env;	857	PL_top_env = main_top_env;
563		858	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	}	859	}
573		860
574	static coro_cctx *	861	static coro_cctx *
575	cctx_new ()	862	cctx_new ()
576	{	863	{
577	coro_cctx *cctx;	864	coro_cctx *cctx;
		865	void *stack_start;
		866	size_t stack_size;
578		867
579	++cctx_count;	868	++cctx_count;
580		869
581	New (0, cctx, 1, coro_cctx);	870	Newz (0, cctx, 1, coro_cctx);
582		871
583	#if HAVE_MMAP	872	#if HAVE_MMAP
584		873
585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	874	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
586	/* mmap suppsedly does allocate-on-write for us */	875	/* 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);	876	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588		877
589	if (cctx->sptr == (void *)-1)	878	if (cctx->sptr != (void *)-1)
590	{
591	perror ("FATAL: unable to mmap stack for coroutine");
592	_exit (EXIT_FAILURE);
593	}	879	{
594
595	# if STACKGUARD	880	# if CORO_STACKGUARD
596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	881	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
597	# endif	882	# endif
		883	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		884	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		885	cctx->flags \|= CC_MAPPED;
		886	}
		887	else
		888	#endif
		889	{
		890	cctx->ssize = coro_stacksize * (long)sizeof (long);
		891	New (0, cctx->sptr, coro_stacksize, long);
598		892
599	#else
600
601	cctx->ssize = STACKSIZE * (long)sizeof (long);
602	New (0, cctx->sptr, STACKSIZE, long);
603
604	if (!cctx->sptr)	893	if (!cctx->sptr)
605	{	894	{
606	perror ("FATAL: unable to malloc stack for coroutine");	895	perror ("FATAL: unable to allocate stack for coroutine");
607	_exit (EXIT_FAILURE);	896	_exit (EXIT_FAILURE);
608	}	897	}
609		898
610	#endif	899	stack_start = cctx->sptr;
		900	stack_size = cctx->ssize;
		901	}
611		902
612	#if USE_VALGRIND	903	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);	904	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
620		905
621	return cctx;	906	return cctx;
622	}	907	}
623		908
624	static void	909	static void
…		…
627	if (!cctx)	912	if (!cctx)
628	return;	913	return;
629		914
630	--cctx_count;	915	--cctx_count;
631		916
632	#if USE_VALGRIND	917	#if CORO_USE_VALGRIND
633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	918	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
634	#endif	919	#endif
635		920
636	#if HAVE_MMAP	921	#if HAVE_MMAP
		922	if (cctx->flags & CC_MAPPED)
637	munmap (cctx->sptr, cctx->ssize);	923	munmap (cctx->sptr, cctx->ssize);
638	#else	924	else
		925	#endif
639	Safefree (cctx->sptr);	926	Safefree (cctx->sptr);
640	#endif
641		927
642	Safefree (cctx);	928	Safefree (cctx);
643	}	929	}
644		930
645	static coro_cctx *	931	static coro_cctx *
646	cctx_get ()	932	cctx_get (pTHX)
647	{	933	{
648	coro_cctx *cctx;
649
650	if (cctx_first)	934	while (cctx_first)
651	{	935	{
652	cctx = cctx_first;	936	coro_cctx *cctx = cctx_first;
653	cctx_first = cctx->next;	937	cctx_first = cctx->next;
654	--cctx_idle;	938	--cctx_idle;
655	}	939
656	else	940	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
657	{	941	return cctx;
658	cctx = cctx_new ();	942
659	PL_op = PL_op->op_next;	943	cctx_destroy (cctx);
660	}	944	}
661		945
662	return cctx;	946	return cctx_new ();
663	}	947	}
664		948
665	static void	949	static void
666	cctx_put (coro_cctx *cctx)	950	cctx_put (coro_cctx *cctx)
667	{	951	{
…		…
670	{	954	{
671	coro_cctx *first = cctx_first;	955	coro_cctx *first = cctx_first;
672	cctx_first = first->next;	956	cctx_first = first->next;
673	--cctx_idle;	957	--cctx_idle;
674		958
675	assert (!first->inuse);
676	cctx_destroy (first);	959	cctx_destroy (first);
677	}	960	}
678		961
679	++cctx_idle;	962	++cctx_idle;
680	cctx->next = cctx_first;	963	cctx->next = cctx_first;
681	cctx_first = cctx;	964	cctx_first = cctx;
682	}	965	}
683		966
684	/* never call directly, always through the coro_state_transfer global variable */	967	/ coroutine switching ***************************************************/
		968
685	static void NOINLINE	969	static void NOINLINE
		970	transfer_check (pTHX_ struct coro prev, struct coro next)
		971	{
		972	if (prev != next)
		973	{
		974	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))
		975	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		976
		977	if (next->flags & CF_RUNNING)
		978	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		979
		980	if (next->flags & CF_DESTROYED)
		981	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		982
		983	if (PL_lex_state != LEX_NOTPARSING)
		984	croak ("Coro::State::transfer called while parsing, but this is not supported");
		985	}
		986	}
		987
		988	/* always use the TRANSFER macro */
		989	static void NOINLINE
686	transfer (struct coro prev, struct coro next, int flags)	990	transfer (pTHX_ struct coro prev, struct coro next)
687	{	991	{
688	dSTACKLEVEL;	992	dSTACKLEVEL;
689		993
690	/* sometimes transfer is only called to set idle_sp */	994	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	995	if (!next)
		996	{
692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	997	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		998	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		999	}
693	else if (prev != next)	1000	else if (prev != next)
694	{	1001	{
695	coro_cctx *prev__cctx;	1002	coro_cctx *prev__cctx;
696		1003
697	if (prev->flags & CF_NEW)	1004	if (prev->flags & CF_NEW)
698	{	1005	{
699	/* create a new empty context */	1006	/* create a new empty context */
700	Newz (0, prev->cctx, 1, coro_cctx);	1007	Newz (0, prev->cctx, 1, coro_cctx);
701	prev->cctx->inuse = 1;
702	prev->flags &= ~CF_NEW;	1008	prev->flags &= ~CF_NEW;
703	prev->flags \|= CF_RUNNING;	1009	prev->flags \|= CF_RUNNING;
704	}	1010	}
705
706	/TODO: must not croak here /
707	if (!prev->flags & CF_RUNNING)
708	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
709
710	if (next->flags & CF_RUNNING)
711	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
712		1011
713	prev->flags &= ~CF_RUNNING;	1012	prev->flags &= ~CF_RUNNING;
714	next->flags \|= CF_RUNNING;	1013	next->flags \|= CF_RUNNING;
715		1014
716	LOCK;	1015	LOCK;
…		…
718	if (next->flags & CF_NEW)	1017	if (next->flags & CF_NEW)
719	{	1018	{
720	/* need to start coroutine */	1019	/* need to start coroutine */
721	next->flags &= ~CF_NEW;	1020	next->flags &= ~CF_NEW;
722	/* first get rid of the old state */	1021	/* first get rid of the old state */
723	SAVE (prev, -1);	1022	save_perl (aTHX_ prev);
724	/* setup coroutine call */	1023	/* setup coroutine call */
725	setup_coro (next);	1024	coro_setup (aTHX_ next);
726	/* need a new stack */
727	assert (!next->stack);
728	}	1025	}
729	else	1026	else
730	{	1027	{
731	/* coroutine already started */	1028	/* coroutine already started */
732	SAVE (prev, flags);	1029	save_perl (aTHX_ prev);
733	LOAD (next);	1030	load_perl (aTHX_ next);
734	}	1031	}
735		1032
736	prev__cctx = prev->cctx;	1033	prev__cctx = prev->cctx;
737		1034
738	/* possibly "free" the cctx */	1035	/* possibly "free" the cctx */
739	if (prev__cctx->idle_sp == STACKLEVEL)	1036	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
740	{	1037	{
741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1038	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
742	assert (PL_top_env == prev__cctx->top_env);	1039	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
743		1040
744	prev->cctx = 0;	1041	prev->cctx = 0;
745		1042
746	cctx_put (prev__cctx);	1043	cctx_put (prev__cctx);
747	prev__cctx->inuse = 0;
748	}	1044	}
749		1045
		1046	++next->usecount;
		1047
750	if (!next->cctx)	1048	if (!next->cctx)
751	{
752	next->cctx = cctx_get ();	1049	next->cctx = cctx_get (aTHX);
753	assert (!next->cctx->inuse);
754	next->cctx->inuse = 1;
755	}
756		1050
757	if (prev__cctx != next->cctx)	1051	if (prev__cctx != next->cctx)
758	{	1052	{
759	prev__cctx->top_env = PL_top_env;	1053	prev__cctx->top_env = PL_top_env;
760	PL_top_env = next->cctx->top_env;	1054	PL_top_env = next->cctx->top_env;
761	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1055	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
762	}	1056	}
763		1057
764	free_coro_mortal ();	1058	free_coro_mortal (aTHX);
765
766	UNLOCK;	1059	UNLOCK;
767	}	1060	}
768	}	1061	}
769		1062
770	struct transfer_args	1063	struct transfer_args
771	{	1064	{
772	struct coro prev, next;	1065	struct coro prev, next;
773	int flags;
774	};	1066	};
775		1067
776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1068	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1069	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
777		1070
		1071	/ high level stuff ******************************************************/
		1072
778	static void	1073	static int
779	coro_state_destroy (struct coro *coro)	1074	coro_state_destroy (pTHX_ struct coro *coro)
780	{	1075	{
781	if (coro->refcnt--)	1076	if (coro->flags & CF_DESTROYED)
782	return;	1077	return 0;
		1078
		1079	coro->flags \|= CF_DESTROYED;
		1080
		1081	if (coro->flags & CF_READY)
		1082	{
		1083	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1084	/* alternative: look through all ready queues and remove the coro */
		1085	LOCK;
		1086	--coro_nready;
		1087	UNLOCK;
		1088	}
		1089	else
		1090	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
783		1091
784	if (coro->mainstack && coro->mainstack != main_mainstack)	1092	if (coro->mainstack && coro->mainstack != main_mainstack)
785	{	1093	{
786	struct coro temp;	1094	struct coro temp;
787		1095
788	if (coro->flags & CF_RUNNING)	1096	if (coro->flags & CF_RUNNING)
789	croak ("FATAL: tried to destroy currently running coroutine");	1097	croak ("FATAL: tried to destroy currently running coroutine");
790		1098
791	SAVE ((&temp), TRANSFER_SAVE_ALL);	1099	save_perl (aTHX_ &temp);
792	LOAD (coro);	1100	load_perl (aTHX_ coro);
793		1101
794	coro_destroy_stacks ();	1102	coro_destroy (aTHX_ coro);
795		1103
796	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1104	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
797		1105
798	coro->mainstack = 0;	1106	coro->mainstack = 0;
799	}	1107	}
800		1108
801	cctx_destroy (coro->cctx);	1109	cctx_destroy (coro->cctx);
802	SvREFCNT_dec (coro->args);	1110	SvREFCNT_dec (coro->args);
803	Safefree (coro);	1111
		1112	if (coro->next) coro->next->prev = coro->prev;
		1113	if (coro->prev) coro->prev->next = coro->next;
		1114	if (coro == coro_first) coro_first = coro->next;
		1115
		1116	return 1;
804	}	1117	}
805		1118
806	static int	1119	static int
807	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1120	coro_state_free (pTHX_ SV sv, MAGIC mg)
808	{	1121	{
809	struct coro coro = (struct coro )mg->mg_ptr;	1122	struct coro coro = (struct coro )mg->mg_ptr;
810	mg->mg_ptr = 0;	1123	mg->mg_ptr = 0;
811		1124
		1125	coro->hv = 0;
		1126
		1127	if (--coro->refcnt < 0)
		1128	{
812	coro_state_destroy (coro);	1129	coro_state_destroy (aTHX_ coro);
		1130	Safefree (coro);
		1131	}
813		1132
814	return 0;	1133	return 0;
815	}	1134	}
816		1135
817	static int	1136	static int
…		…
824	return 0;	1143	return 0;
825	}	1144	}
826		1145
827	static MGVTBL coro_state_vtbl = {	1146	static MGVTBL coro_state_vtbl = {
828	0, 0, 0, 0,	1147	0, 0, 0, 0,
829	coro_state_clear,	1148	coro_state_free,
830	0,	1149	0,
831	#ifdef MGf_DUP	1150	#ifdef MGf_DUP
832	coro_state_dup,	1151	coro_state_dup,
833	#else	1152	#else
834	# define MGf_DUP 0	1153	# define MGf_DUP 0
835	#endif	1154	#endif
836	};	1155	};
837		1156
838	static struct coro *
839	SvSTATE (SV *coro)
840	{
841	HV *stash;
842	MAGIC *mg;
843
844	if (SvROK (coro))
845	coro = SvRV (coro);
846
847	stash = SvSTASH (coro);
848	if (stash != coro_stash && stash != coro_state_stash)
849	{
850	/* very slow, but rare, check */
851	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
852	croak ("Coro::State object required");
853	}
854
855	mg = SvMAGIC (coro);
856	assert (mg->mg_type == PERL_MAGIC_ext);
857	return (struct coro *)mg->mg_ptr;
858	}
859
860	static void	1157	static void
861	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1158	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
862	{	1159	{
863	ta->prev = SvSTATE (prev);	1160	ta->prev = SvSTATE (prev_sv);
864	ta->next = SvSTATE (next);	1161	ta->next = SvSTATE (next_sv);
865	ta->flags = flags;	1162	TRANSFER_CHECK (*ta);
866	}	1163	}
867		1164
868	static void	1165	static void
869	api_transfer (SV prev, SV next, int flags)	1166	api_transfer (SV prev_sv, SV next_sv)
870	{	1167	{
		1168	dTHX;
871	struct transfer_args ta;	1169	struct transfer_args ta;
872		1170
873	prepare_transfer (&ta, prev, next, flags);	1171	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
874	TRANSFER (ta);	1172	TRANSFER (ta);
875	}	1173	}
876		1174
877	/ Coro ******************************************************************/	1175	/ Coro ******************************************************************/
878		1176
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	1177	static void
892	coro_enq (SV *coro_sv)	1178	coro_enq (pTHX_ SV *coro_sv)
893	{	1179	{
894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1180	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
895	coro_nready++;
896	}	1181	}
897		1182
898	static SV *	1183	static SV *
899	coro_deq (int min_prio)	1184	coro_deq (pTHX_ int min_prio)
900	{	1185	{
901	int prio = PRIO_MAX - PRIO_MIN;	1186	int prio = PRIO_MAX - PRIO_MIN;
902		1187
903	min_prio -= PRIO_MIN;	1188	min_prio -= PRIO_MIN;
904	if (min_prio < 0)	1189	if (min_prio < 0)
905	min_prio = 0;	1190	min_prio = 0;
906		1191
907	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1192	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
908	if (AvFILLp (coro_ready [prio]) >= 0)	1193	if (AvFILLp (coro_ready [prio]) >= 0)
909	{
910	coro_nready--;
911	return av_shift (coro_ready [prio]);	1194	return av_shift (coro_ready [prio]);
912	}
913		1195
914	return 0;	1196	return 0;
915	}	1197	}
916		1198
917	static int	1199	static int
918	api_ready (SV *coro_sv)	1200	api_ready (SV *coro_sv)
919	{	1201	{
		1202	dTHX;
920	struct coro *coro;	1203	struct coro *coro;
921		1204
922	if (SvROK (coro_sv))	1205	if (SvROK (coro_sv))
923	coro_sv = SvRV (coro_sv);	1206	coro_sv = SvRV (coro_sv);
924		1207
925	coro = SvSTATE (coro_sv);	1208	coro = SvSTATE (coro_sv);
926		1209
927	if (coro->flags & CF_READY)	1210	if (coro->flags & CF_READY)
928	return 0;	1211	return 0;
929		1212
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;	1213	coro->flags \|= CF_READY;
936		1214
937	LOCK;	1215	LOCK;
938	coro_enq (SvREFCNT_inc (coro_sv));	1216	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1217	++coro_nready;
939	UNLOCK;	1218	UNLOCK;
940		1219
941	return 1;	1220	return 1;
942	}	1221	}
943		1222
944	static int	1223	static int
945	api_is_ready (SV *coro_sv)	1224	api_is_ready (SV *coro_sv)
946	{	1225	{
		1226	dTHX;
947	return !!SvSTATE (coro_sv)->flags & CF_READY;	1227	return !!(SvSTATE (coro_sv)->flags & CF_READY);
948	}	1228	}
949		1229
950	static void	1230	static void
951	prepare_schedule (struct transfer_args *ta)	1231	prepare_schedule (pTHX_ struct transfer_args *ta)
952	{	1232	{
953	SV prev, next;	1233	SV prev_sv, next_sv;
954		1234
955	for (;;)	1235	for (;;)
956	{	1236	{
957	LOCK;	1237	LOCK;
958	next = coro_deq (PRIO_MIN);	1238	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1239
		1240	/* nothing to schedule: call the idle handler */
		1241	if (!next_sv)
		1242	{
		1243	dSP;
		1244	UNLOCK;
		1245
		1246	ENTER;
		1247	SAVETMPS;
		1248
		1249	PUSHMARK (SP);
		1250	PUTBACK;
		1251	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1252
		1253	FREETMPS;
		1254	LEAVE;
		1255	continue;
		1256	}
		1257
		1258	ta->next = SvSTATE (next_sv);
		1259
		1260	/* cannot transfer to destroyed coros, skip and look for next */
		1261	if (ta->next->flags & CF_DESTROYED)
		1262	{
		1263	UNLOCK;
		1264	SvREFCNT_dec (next_sv);
		1265	/* coro_nready is already taken care of by destroy */
		1266	continue;
		1267	}
		1268
		1269	--coro_nready;
959	UNLOCK;	1270	UNLOCK;
960
961	if (next)
962	break;	1271	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	}	1272	}
977	}
978
979	prev = SvRV (coro_current);
980	SvRV_set (coro_current, next);
981		1273
982	/* free this only after the transfer */	1274	/* free this only after the transfer */
		1275	prev_sv = SvRV (coro_current);
		1276	ta->prev = SvSTATE (prev_sv);
		1277	TRANSFER_CHECK (*ta);
		1278	assert (ta->next->flags & CF_READY);
		1279	ta->next->flags &= ~CF_READY;
		1280	SvRV_set (coro_current, next_sv);
		1281
983	LOCK;	1282	LOCK;
984	free_coro_mortal ();	1283	free_coro_mortal (aTHX);
		1284	coro_mortal = prev_sv;
985	UNLOCK;	1285	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	}	1286	}
998		1287
999	static void	1288	static void
1000	prepare_cede (struct transfer_args *ta)	1289	prepare_cede (pTHX_ struct transfer_args *ta)
1001	{	1290	{
1002	api_ready (coro_current);	1291	api_ready (coro_current);
1003
1004	prepare_schedule (ta);	1292	prepare_schedule (aTHX_ ta);
		1293	}
		1294
		1295	static int
		1296	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1297	{
		1298	if (coro_nready)
		1299	{
		1300	SV *prev = SvRV (coro_current);
		1301	prepare_schedule (aTHX_ ta);
		1302	api_ready (prev);
		1303	return 1;
		1304	}
		1305	else
		1306	return 0;
1005	}	1307	}
1006		1308
1007	static void	1309	static void
1008	api_schedule (void)	1310	api_schedule (void)
1009	{	1311	{
		1312	dTHX;
1010	struct transfer_args ta;	1313	struct transfer_args ta;
1011		1314
1012	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1013	TRANSFER (ta);	1316	TRANSFER (ta);
1014	}	1317	}
1015		1318
1016	static void	1319	static int
1017	api_cede (void)	1320	api_cede (void)
1018	{	1321	{
		1322	dTHX;
1019	struct transfer_args ta;	1323	struct transfer_args ta;
1020		1324
1021	prepare_cede (&ta);	1325	prepare_cede (aTHX_ &ta);
		1326
		1327	if (ta.prev != ta.next)
		1328	{
1022	TRANSFER (ta);	1329	TRANSFER (ta);
		1330	return 1;
		1331	}
		1332	else
		1333	return 0;
1023	}	1334	}
1024		1335
		1336	static int
		1337	api_cede_notself (void)
		1338	{
		1339	dTHX;
		1340	struct transfer_args ta;
		1341
		1342	if (prepare_cede_notself (aTHX_ &ta))
		1343	{
		1344	TRANSFER (ta);
		1345	return 1;
		1346	}
		1347	else
		1348	return 0;
		1349	}
		1350
		1351	static void
		1352	api_trace (SV *coro_sv, int flags)
		1353	{
		1354	dTHX;
		1355	struct coro *coro = SvSTATE (coro_sv);
		1356
		1357	if (flags & CC_TRACE)
		1358	{
		1359	if (!coro->cctx)
		1360	coro->cctx = cctx_new ();
		1361	else if (!(coro->cctx->flags & CC_TRACE))
		1362	croak ("cannot enable tracing on coroutine with custom stack");
		1363
		1364	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1365	}
		1366	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1367	{
		1368	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1369
		1370	if (coro->flags & CF_RUNNING)
		1371	PL_runops = RUNOPS_DEFAULT;
		1372	else
		1373	coro->runops = RUNOPS_DEFAULT;
		1374	}
		1375	}
		1376
1025	MODULE = Coro::State PACKAGE = Coro::State	1377	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1026		1378
1027	PROTOTYPES: DISABLE	1379	PROTOTYPES: DISABLE
1028		1380
1029	BOOT:	1381	BOOT:
1030	{	1382	{
1031	#ifdef USE_ITHREADS	1383	#ifdef USE_ITHREADS
1032	MUTEX_INIT (&coro_mutex);	1384	MUTEX_INIT (&coro_mutex);
1033	#endif	1385	#endif
1034	BOOT_PAGESIZE;	1386	BOOT_PAGESIZE;
1035		1387
		1388	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1389	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1390
1036	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1391	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1037		1392
1038	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1393	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1039	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1394	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1040	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1395	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1396	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1041		1397
1042	main_mainstack = PL_mainstack;	1398	main_mainstack = PL_mainstack;
		1399	main_top_env = PL_top_env;
		1400
		1401	while (main_top_env->je_prev)
		1402	main_top_env = main_top_env->je_prev;
1043		1403
1044	coroapi.ver = CORO_API_VERSION;	1404	coroapi.ver = CORO_API_VERSION;
1045	coroapi.transfer = api_transfer;	1405	coroapi.transfer = api_transfer;
1046		1406
1047	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1407	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1054	struct coro *coro;	1414	struct coro *coro;
1055	HV *hv;	1415	HV *hv;
1056	int i;	1416	int i;
1057		1417
1058	Newz (0, coro, 1, struct coro);	1418	Newz (0, coro, 1, struct coro);
1059	coro->args = newAV ();	1419	coro->args = newAV ();
1060	coro->flags = CF_NEW;	1420	coro->flags = CF_NEW;
1061		1421
		1422	if (coro_first) coro_first->prev = coro;
		1423	coro->next = coro_first;
		1424	coro_first = coro;
		1425
1062	hv = newHV ();	1426	coro->hv = hv = newHV ();
1063	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1427	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));	1428	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1065		1429
1066	for (i = 1; i < items; i++)	1430	for (i = 1; i < items; i++)
1067	av_push (coro->args, newSVsv (ST (i)));	1431	av_push (coro->args, newSVsv (ST (i)));
1068	}	1432	}
1069	OUTPUT:	1433	OUTPUT:
1070	RETVAL	1434	RETVAL
1071		1435
		1436	# these not obviously related functions are all rolled into the same xs
		1437	# function to increase chances that they all will call transfer with the same
		1438	# stack offset
1072	void	1439	void
1073	_set_stacklevel (...)	1440	_set_stacklevel (...)
1074	ALIAS:	1441	ALIAS:
1075	Coro::State::transfer = 1	1442	Coro::State::transfer = 1
1076	Coro::schedule = 2	1443	Coro::schedule = 2
1077	Coro::cede = 3	1444	Coro::cede = 3
		1445	Coro::cede_notself = 4
1078	CODE:	1446	CODE:
1079	{	1447	{
1080	struct transfer_args ta;	1448	struct transfer_args ta;
1081		1449
1082	switch (ix)	1450	switch (ix)
1083	{	1451	{
1084	case 0:	1452	case 0:
1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1453	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1086	ta.next = 0;	1454	ta.next = 0;
1087	ta.flags = TRANSFER_SET_STACKLEVEL;
1088	break;	1455	break;
1089		1456
1090	case 1:	1457	case 1:
1091	if (items != 3)	1458	if (items != 2)
1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1459	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1093		1460
1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1461	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1095	break;	1462	break;
1096		1463
1097	case 2:	1464	case 2:
1098	prepare_schedule (&ta);	1465	prepare_schedule (aTHX_ &ta);
1099	break;	1466	break;
1100		1467
1101	case 3:	1468	case 3:
1102	prepare_cede (&ta);	1469	prepare_cede (aTHX_ &ta);
		1470	break;
		1471
		1472	case 4:
		1473	if (!prepare_cede_notself (aTHX_ &ta))
		1474	XSRETURN_EMPTY;
		1475
1103	break;	1476	break;
1104	}	1477	}
1105		1478
		1479	BARRIER;
1106	TRANSFER (ta);	1480	TRANSFER (ta);
1107	}
1108		1481
1109	void	1482	if (GIMME_V != G_VOID && ta.next != ta.prev)
1110	_clone_state_from (SV dst, SV src)	1483	XSRETURN_YES;
		1484	}
		1485
		1486	bool
		1487	_destroy (SV *coro_sv)
1111	CODE:	1488	CODE:
1112	{	1489	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1113	struct coro *coro_src = SvSTATE (src);	1490	OUTPUT:
1114		1491	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		1492
1121	void	1493	void
1122	_exit (code)	1494	_exit (code)
1123	int code	1495	int code
1124	PROTOTYPE: $	1496	PROTOTYPE: $
1125	CODE:	1497	CODE:
1126	_exit (code);	1498	_exit (code);
1127		1499
1128	int	1500	int
		1501	cctx_stacksize (int new_stacksize = 0)
		1502	CODE:
		1503	RETVAL = coro_stacksize;
		1504	if (new_stacksize)
		1505	coro_stacksize = new_stacksize;
		1506	OUTPUT:
		1507	RETVAL
		1508
		1509	int
1129	cctx_count ()	1510	cctx_count ()
1130	CODE:	1511	CODE:
1131	RETVAL = cctx_count;	1512	RETVAL = cctx_count;
1132	OUTPUT:	1513	OUTPUT:
1133	RETVAL	1514	RETVAL
…		…
1137	CODE:	1518	CODE:
1138	RETVAL = cctx_idle;	1519	RETVAL = cctx_idle;
1139	OUTPUT:	1520	OUTPUT:
1140	RETVAL	1521	RETVAL
1141		1522
		1523	void
		1524	list ()
		1525	PPCODE:
		1526	{
		1527	struct coro *coro;
		1528	for (coro = coro_first; coro; coro = coro->next)
		1529	if (coro->hv)
		1530	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1531	}
		1532
		1533	void
		1534	call (Coro::State coro, SV *coderef)
		1535	ALIAS:
		1536	eval = 1
		1537	CODE:
		1538	{
		1539	if (coro->mainstack)
		1540	{
		1541	struct coro temp;
		1542	Zero (&temp, 1, struct coro);
		1543
		1544	if (!(coro->flags & CF_RUNNING))
		1545	{
		1546	save_perl (aTHX_ &temp);
		1547	load_perl (aTHX_ coro);
		1548	}
		1549
		1550	{
		1551	dSP;
		1552	ENTER;
		1553	SAVETMPS;
		1554	PUSHMARK (SP);
		1555	PUTBACK;
		1556	if (ix)
		1557	eval_sv (coderef, 0);
		1558	else
		1559	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1560	SPAGAIN;
		1561	FREETMPS;
		1562	LEAVE;
		1563	PUTBACK;
		1564	}
		1565
		1566	if (!(coro->flags & CF_RUNNING))
		1567	{
		1568	save_perl (aTHX_ coro);
		1569	load_perl (aTHX_ &temp);
		1570	}
		1571	}
		1572	}
		1573
		1574	SV *
		1575	is_ready (Coro::State coro)
		1576	PROTOTYPE: $
		1577	ALIAS:
		1578	is_ready = CF_READY
		1579	is_running = CF_RUNNING
		1580	is_new = CF_NEW
		1581	is_destroyed = CF_DESTROYED
		1582	CODE:
		1583	RETVAL = boolSV (coro->flags & ix);
		1584	OUTPUT:
		1585	RETVAL
		1586
		1587	void
		1588	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1589
		1590	SV *
		1591	has_stack (Coro::State coro)
		1592	PROTOTYPE: $
		1593	CODE:
		1594	RETVAL = boolSV (!!coro->cctx);
		1595	OUTPUT:
		1596	RETVAL
		1597
		1598	int
		1599	is_traced (Coro::State coro)
		1600	PROTOTYPE: $
		1601	CODE:
		1602	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1603	OUTPUT:
		1604	RETVAL
		1605
		1606	IV
		1607	rss (Coro::State coro)
		1608	PROTOTYPE: $
		1609	ALIAS:
		1610	usecount = 1
		1611	CODE:
		1612	switch (ix)
		1613	{
		1614	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1615	case 1: RETVAL = coro->usecount; break;
		1616	}
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620
1142	MODULE = Coro::State PACKAGE = Coro	1621	MODULE = Coro::State PACKAGE = Coro
1143		1622
1144	BOOT:	1623	BOOT:
1145	{	1624	{
1146	int i;	1625	int i;
		1626
		1627	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1628	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1629	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1630
		1631	coro_current = get_sv ("Coro::current", FALSE);
		1632	SvREADONLY_on (coro_current);
1147		1633
1148	coro_stash = gv_stashpv ("Coro", TRUE);	1634	coro_stash = gv_stashpv ("Coro", TRUE);
1149		1635
1150	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1636	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1151	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1637	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1638	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1639	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1640	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1641	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1156		1642
1157	coro_current = get_sv ("Coro::current", FALSE);
1158	SvREADONLY_on (coro_current);
1159
1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1643	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1161	coro_ready[i] = newAV ();	1644	coro_ready[i] = newAV ();
1162		1645
1163	{	1646	{
1164	SV *sv = perl_get_sv("Coro::API", 1);	1647	SV *sv = perl_get_sv("Coro::API", 1);
1165		1648
1166	coroapi.schedule = api_schedule;	1649	coroapi.schedule = api_schedule;
1167	coroapi.cede = api_cede;	1650	coroapi.cede = api_cede;
		1651	coroapi.cede_notself = api_cede_notself;
1168	coroapi.ready = api_ready;	1652	coroapi.ready = api_ready;
1169	coroapi.is_ready = api_is_ready;	1653	coroapi.is_ready = api_is_ready;
1170	coroapi.nready = &coro_nready;	1654	coroapi.nready = &coro_nready;
1171	coroapi.current = coro_current;	1655	coroapi.current = coro_current;
1172		1656
1173	GCoroAPI = &coroapi;	1657	GCoroAPI = &coroapi;
1174	sv_setiv (sv, (IV)&coroapi);	1658	sv_setiv (sv, (IV)&coroapi);
1175	SvREADONLY_on (sv);	1659	SvREADONLY_on (sv);
1176	}	1660	}
1177	}	1661	}
		1662
		1663	void
		1664	_set_current (SV *current)
		1665	PROTOTYPE: $
		1666	CODE:
		1667	SvREFCNT_dec (SvRV (coro_current));
		1668	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1178		1669
1179	int	1670	int
1180	prio (Coro::State coro, int newprio = 0)	1671	prio (Coro::State coro, int newprio = 0)
1181	ALIAS:	1672	ALIAS:
1182	nice = 1	1673	nice = 1
…		…
1185	RETVAL = coro->prio;	1676	RETVAL = coro->prio;
1186		1677
1187	if (items > 1)	1678	if (items > 1)
1188	{	1679	{
1189	if (ix)	1680	if (ix)
1190	newprio += coro->prio;	1681	newprio = coro->prio - newprio;
1191		1682
1192	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1683	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1193	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1684	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1194		1685
1195	coro->prio = newprio;	1686	coro->prio = newprio;
1196	}	1687	}
1197	}	1688	}
		1689	OUTPUT:
		1690	RETVAL
1198		1691
1199	SV *	1692	SV *
1200	ready (SV *self)	1693	ready (SV *self)
1201	PROTOTYPE: $	1694	PROTOTYPE: $
1202	CODE:	1695	CODE:
1203	RETVAL = boolSV (api_ready (self));	1696	RETVAL = boolSV (api_ready (self));
1204	OUTPUT:	1697	OUTPUT:
1205	RETVAL	1698	RETVAL
1206		1699
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	1700	int
1216	nready (...)	1701	nready (...)
1217	PROTOTYPE:	1702	PROTOTYPE:
1218	CODE:	1703	CODE:
1219	RETVAL = coro_nready;	1704	RETVAL = coro_nready;
1220	OUTPUT:	1705	OUTPUT:
1221	RETVAL	1706	RETVAL
1222		1707
		1708	# for async_pool speedup
1223	void	1709	void
1224	_set_current (SV *current)	1710	_pool_1 (SV *cb)
1225	PROTOTYPE: $
1226	CODE:	1711	CODE:
1227	SvREFCNT_dec (SvRV (coro_current));	1712	{
1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1713	struct coro *coro = SvSTATE (coro_current);
		1714	HV hv = (HV )SvRV (coro_current);
		1715	AV *defav = GvAV (PL_defgv);
		1716	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1717	AV *invoke_av;
		1718	int i, len;
		1719
		1720	if (!invoke)
		1721	croak ("\3terminate\2\n");
		1722
		1723	SvREFCNT_dec (coro->saved_deffh);
		1724	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1725
		1726	hv_store (hv, "desc", sizeof ("desc") - 1,
		1727	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1728
		1729	invoke_av = (AV *)SvRV (invoke);
		1730	len = av_len (invoke_av);
		1731
		1732	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1733
		1734	if (len > 0)
		1735	{
		1736	av_fill (defav, len - 1);
		1737	for (i = 0; i < len; ++i)
		1738	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1739	}
		1740
		1741	SvREFCNT_dec (invoke);
		1742	}
		1743
		1744	void
		1745	_pool_2 (SV *cb)
		1746	CODE:
		1747	{
		1748	struct coro *coro = SvSTATE (coro_current);
		1749
		1750	sv_setsv (cb, &PL_sv_undef);
		1751
		1752	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1753	coro->saved_deffh = 0;
		1754
		1755	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1756	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1757	croak ("\3terminate\2\n");
		1758
		1759	av_clear (GvAV (PL_defgv));
		1760	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1761	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1762
		1763	coro->prio = 0;
		1764
		1765	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1766	api_trace (coro_current, 0);
		1767
		1768	av_push (av_async_pool, newSVsv (coro_current));
		1769	}
		1770
1229		1771
1230	MODULE = Coro::State PACKAGE = Coro::AIO	1772	MODULE = Coro::State PACKAGE = Coro::AIO
1231		1773
1232	SV *	1774	SV *
1233	_get_state ()	1775	_get_state ()
1234	CODE:	1776	CODE:
1235	{	1777	{
1236	struct {	1778	struct io_state *data;
1237	int errorno;
1238	int laststype;
1239	int laststatval;
1240	Stat_t statcache;
1241	} data;
1242		1779
		1780	RETVAL = newSV (sizeof (struct io_state));
		1781	data = (struct io_state *)SvPVX (RETVAL);
		1782	SvCUR_set (RETVAL, sizeof (struct io_state));
		1783	SvPOK_only (RETVAL);
		1784
1243	data.errorno = errno;	1785	data->errorno = errno;
1244	data.laststype = PL_laststype;	1786	data->laststype = PL_laststype;
1245	data.laststatval = PL_laststatval;	1787	data->laststatval = PL_laststatval;
1246	data.statcache = PL_statcache;	1788	data->statcache = PL_statcache;
1247
1248	RETVAL = newSVpvn ((char *)&data, sizeof data);
1249	}	1789	}
1250	OUTPUT:	1790	OUTPUT:
1251	RETVAL	1791	RETVAL
1252		1792
1253	void	1793	void
1254	_set_state (char *data_)	1794	_set_state (char *data_)
1255	PROTOTYPE: $	1795	PROTOTYPE: $
1256	CODE:	1796	CODE:
1257	{	1797	{
1258	struct {	1798	struct io_state data = (void )data_;
1259	int errorno;
1260	int laststype;
1261	int laststatval;
1262	Stat_t statcache;
1263	} data = (void )data_;
1264		1799
1265	errno = data->errorno;	1800	errno = data->errorno;
1266	PL_laststype = data->laststype;	1801	PL_laststype = data->laststype;
1267	PL_laststatval = data->laststatval;	1802	PL_laststatval = data->laststatval;
1268	PL_statcache = data->statcache;	1803	PL_statcache = data->statcache;
1269	}	1804	}
		1805

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Comparing Coro/Coro/State.xs (file contents): Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs. Revision 1.190 by root, Fri Oct 5 20:39:39 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.190 by root, Fri Oct 5 20:39:39 2007 UTC