ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.115 by root, Fri Dec 1 13:36:08 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, /* coroutine is running */	172	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY, /* coroutine is ready */	173	CF_READY = 0x0002, /* coroutine is ready */
		174	CF_NEW = 0x0004, /* has never been switched to */
		175	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
137	};	176	};
138		177
139	/* this is a structure representing a perl-level coroutine */	178	/* this is a structure representing a perl-level coroutine */
140	struct coro {	179	struct coro {
141	/* the c coroutine allocated to this perl coroutine, if any */	180	/* the c coroutine allocated to this perl coroutine, if any */
142	coro_cctx *cctx;	181	coro_cctx *cctx;
143		182
144	/* data associated with this coroutine (initial args) */	183	/* data associated with this coroutine (initial args) */
145	AV *args;	184	AV *args;
146	int refcnt;	185	int refcnt;
147	int flags;	186	int save; /* CORO_SAVE flags */
		187	int flags; /* CF_ flags */
148		188
149	/* optionally saved, might be zero */	189	/* optionally saved, might be zero */
150	AV *defav;	190	AV *defav; /* @_ */
151	SV *defsv;	191	SV *defsv; /* $_ */
152	SV *errsv;	192	SV *errsv; /* $@ */
		193	GV *deffh; /* default filehandle */
		194	SV *irssv; /* $/ */
		195	SV *irssv_sv; /* real $/ cache */
153		196
154	#define VAR(name,type) type name;	197	#define VAR(name,type) type name;
155	# include "state.h"	198	# include "state.h"
156	#undef VAR	199	#undef VAR
157		200
158	/* coro process data */	201	/* coro process data */
159	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 */
160	};	207	};
161		208
162	typedef struct coro *Coro__State;	209	typedef struct coro *Coro__State;
163	typedef struct coro *Coro__State_or_hashref;	210	typedef struct coro *Coro__State_or_hashref;
164		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
165	static AV *	229	static AV *
166	coro_clone_padlist (CV *cv)	230	coro_clone_padlist (pTHX_ CV *cv)
167	{	231	{
168	AV *padlist = CvPADLIST (cv);	232	AV *padlist = CvPADLIST (cv);
169	AV *newpadlist, *newpad;	233	AV *newpadlist, *newpad;
170		234
171	newpadlist = newAV ();	235	newpadlist = newAV ();
…		…
183		247
184	return newpadlist;	248	return newpadlist;
185	}	249	}
186		250
187	static void	251	static void
188	free_padlist (AV *padlist)	252	free_padlist (pTHX_ AV *padlist)
189	{	253	{
190	/* may be during global destruction */	254	/* may be during global destruction */
191	if (SvREFCNT (padlist))	255	if (SvREFCNT (padlist))
192	{	256	{
193	I32 i = AvFILLp (padlist);	257	I32 i = AvFILLp (padlist);
…		…
214	AV *padlist;	278	AV *padlist;
215	AV *av = (AV *)mg->mg_obj;	279	AV *av = (AV *)mg->mg_obj;
216		280
217	/* casting is fun. */	281	/* casting is fun. */
218	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	282	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
219	free_padlist (padlist);	283	free_padlist (aTHX_ padlist);
220		284
221	SvREFCNT_dec (av);	285	SvREFCNT_dec (av);
222		286
223	return 0;	287	return 0;
224	}	288	}
…		…
234	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	298	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
235	: 0	299	: 0
236		300
237	/* the next two functions merely cache the padlists */	301	/* the next two functions merely cache the padlists */
238	static void	302	static void
239	get_padlist (CV *cv)	303	get_padlist (pTHX_ CV *cv)
240	{	304	{
241	MAGIC *mg = CORO_MAGIC (cv);	305	MAGIC *mg = CORO_MAGIC (cv);
242	AV *av;	306	AV *av;
243		307
244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	308	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	309	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
246	else	310	else
247	{	311	{
248	#if 0	312	#if CORO_PREFER_PERL_FUNCTIONS
249	/* this is probably cleaner, but also slower? */	313	/* this is probably cleaner, but also slower? */
250	CV *cp = Perl_cv_clone (cv);	314	CV *cp = Perl_cv_clone (cv);
251	CvPADLIST (cv) = CvPADLIST (cp);	315	CvPADLIST (cv) = CvPADLIST (cp);
252	CvPADLIST (cp) = 0;	316	CvPADLIST (cp) = 0;
253	SvREFCNT_dec (cp);	317	SvREFCNT_dec (cp);
254	#else	318	#else
255	CvPADLIST (cv) = coro_clone_padlist (cv);	319	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
256	#endif	320	#endif
257	}	321	}
258	}	322	}
259		323
260	static void	324	static void
261	put_padlist (CV *cv)	325	put_padlist (pTHX_ CV *cv)
262	{	326	{
263	MAGIC *mg = CORO_MAGIC (cv);	327	MAGIC *mg = CORO_MAGIC (cv);
264	AV *av;	328	AV *av;
265		329
266	if (!mg)	330	if (!mg)
…		…
277	av_extend (av, AvMAX (av) + 1);	341	av_extend (av, AvMAX (av) + 1);
278		342
279	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	343	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
280	}	344	}
281		345
		346	/** load & save, init *******************************************************/
		347
282	#define SB do {	348	#define SB do {
283	#define SE } while (0)	349	#define SE } while (0)
284		350
285	#define LOAD(state) load_state((state));
286	#define SAVE(state,flags) save_state((state),(flags));
287
288	#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
289		352
290	static void	353	static void
291	load_state(Coro__State c)	354	load_perl (pTHX_ Coro__State c)
292	{	355	{
293	#define VAR(name,type) PL_ ## name = c->name;	356	#define VAR(name,type) PL_ ## name = c->name;
294	# include "state.h"	357	# include "state.h"
295	#undef VAR	358	#undef VAR
296		359
297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
299	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	}
300		379
301	{	380	{
302	dSP;	381	dSP;
303	CV *cv;	382	CV *cv;
304		383
305	/* now do the ugly restore mess */	384	/* now do the ugly restore mess */
306	while ((cv = (CV *)POPs))	385	while ((cv = (CV *)POPs))
307	{	386	{
308	put_padlist (cv); /* mark this padlist as available */	387	put_padlist (aTHX_ cv); /* mark this padlist as available */
309	CvDEPTH (cv) = PTR2IV (POPs);	388	CvDEPTH (cv) = PTR2IV (POPs);
310	CvPADLIST (cv) = (AV *)POPs;	389	CvPADLIST (cv) = (AV *)POPs;
311	}	390	}
312		391
313	PUTBACK;	392	PUTBACK;
314	}	393	}
315	}	394	}
316		395
317	static void	396	static void
318	save_state(Coro__State c, int flags)	397	save_perl (pTHX_ Coro__State c)
319	{	398	{
320	{	399	{
321	dSP;	400	dSP;
322	I32 cxix = cxstack_ix;	401	I32 cxix = cxstack_ix;
323	PERL_CONTEXT *ccstk = cxstack;	402	PERL_CONTEXT *ccstk = cxstack;
…		…
326	/*	405	/*
327	* 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
328	* (and reinitialize) all cv's in the whole callchain :(	407	* (and reinitialize) all cv's in the whole callchain :(
329	*/	408	*/
330		409
331	PUSHs (Nullsv);	410	XPUSHs (Nullsv);
332	/* this loop was inspired by pp_caller */	411	/* this loop was inspired by pp_caller */
333	for (;;)	412	for (;;)
334	{	413	{
335	while (cxix >= 0)	414	while (cxix >= 0)
336	{	415	{
337	PERL_CONTEXT *cx = &ccstk[cxix--];	416	PERL_CONTEXT *cx = &ccstk[cxix--];
338		417
339	if (CxTYPE(cx) == CXt_SUB)	418	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
340	{	419	{
341	CV *cv = cx->blk_sub.cv;	420	CV *cv = cx->blk_sub.cv;
342		421
343	if (CvDEPTH (cv))	422	if (CvDEPTH (cv))
344	{	423	{
345	EXTEND (SP, 3);	424	EXTEND (SP, 3);
346
347	PUSHs ((SV *)CvPADLIST(cv));	425	PUSHs ((SV *)CvPADLIST (cv));
348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	426	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
349	PUSHs ((SV *)cv);	427	PUSHs ((SV *)cv);
350		428
351	CvDEPTH (cv) = 0;	429	CvDEPTH (cv) = 0;
352	get_padlist (cv);	430	get_padlist (aTHX_ cv);
353	}	431	}
354	}	432	}
355	#ifdef CXt_FORMAT
356	else if (CxTYPE(cx) == CXt_FORMAT)
357	{
358	/* I never used formats, so how should I know how these are implemented? */
359	/* my bold guess is as a simple, plain sub... */
360	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
361	}
362	#endif
363	}	433	}
364		434
365	if (top_si->si_type == PERLSI_MAIN)	435	if (top_si->si_type == PERLSI_MAIN)
366	break;	436	break;
367		437
368	top_si = top_si->si_prev;	438	top_si = top_si->si_prev;
369	ccstk = top_si->si_cxstack;	439	ccstk = top_si->si_cxstack;
370	cxix = top_si->si_cxix;	440	cxix = top_si->si_cxix;
371	}	441	}
372		442
373	PUTBACK;	443	PUTBACK;
374	}	444	}
375		445
376	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;
377	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	447	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
378	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;
379		451
380	#define VAR(name,type)c->name = PL_ ## name;	452	#define VAR(name,type)c->name = PL_ ## name;
381	# include "state.h"	453	# include "state.h"
382	#undef VAR	454	#undef VAR
383	}	455	}
…		…
386	* allocate various perl stacks. This is an exact copy	458	* allocate various perl stacks. This is an exact copy
387	* of perl.c:init_stacks, except that it uses less memory	459	* of perl.c:init_stacks, except that it uses less memory
388	* on the (sometimes correct) assumption that coroutines do	460	* on the (sometimes correct) assumption that coroutines do
389	* not usually need a lot of stackspace.	461	* not usually need a lot of stackspace.
390	*/	462	*/
		463	#if CORO_PREFER_PERL_FUNCTIONS
		464	# define coro_init_stacks init_stacks
		465	#else
391	static void	466	static void
392	coro_init_stacks ()	467	coro_init_stacks (pTHX)
393	{	468	{
394	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	469	PL_curstackinfo = new_stackinfo(64, 6);
395	PL_curstackinfo->si_type = PERLSI_MAIN;	470	PL_curstackinfo->si_type = PERLSI_MAIN;
396	PL_curstack = PL_curstackinfo->si_stack;	471	PL_curstack = PL_curstackinfo->si_stack;
397	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
398		473
399	PL_stack_base = AvARRAY(PL_curstack);	474	PL_stack_base = AvARRAY(PL_curstack);
400	PL_stack_sp = PL_stack_base;	475	PL_stack_sp = PL_stack_base;
401	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
402		477
403	New(50,PL_tmps_stack,96,SV*);	478	New(50,PL_tmps_stack,64,SV*);
404	PL_tmps_floor = -1;	479	PL_tmps_floor = -1;
405	PL_tmps_ix = -1;	480	PL_tmps_ix = -1;
406	PL_tmps_max = 96;	481	PL_tmps_max = 64;
407		482
408	New(54,PL_markstack,16,I32);	483	New(54,PL_markstack,16,I32);
409	PL_markstack_ptr = PL_markstack;	484	PL_markstack_ptr = PL_markstack;
410	PL_markstack_max = PL_markstack + 16;	485	PL_markstack_max = PL_markstack + 16;
411		486
…		…
415		490
416	New(54,PL_scopestack,16,I32);	491	New(54,PL_scopestack,16,I32);
417	PL_scopestack_ix = 0;	492	PL_scopestack_ix = 0;
418	PL_scopestack_max = 16;	493	PL_scopestack_max = 16;
419		494
420	New(54,PL_savestack,96,ANY);	495	New(54,PL_savestack,64,ANY);
421	PL_savestack_ix = 0;	496	PL_savestack_ix = 0;
422	PL_savestack_max = 96;	497	PL_savestack_max = 64;
423		498
424	#if !PERL_VERSION_ATLEAST (5,9,0)	499	#if !PERL_VERSION_ATLEAST (5,9,0)
425	New(54,PL_retstack,8,OP*);	500	New(54,PL_retstack,4,OP*);
426	PL_retstack_ix = 0;	501	PL_retstack_ix = 0;
427	PL_retstack_max = 8;	502	PL_retstack_max = 4;
428	#endif	503	#endif
429	}	504	}
		505	#endif
430		506
431	/*	507	/*
432	* destroy the stacks, the callchain etc...	508	* destroy the stacks, the callchain etc...
433	*/	509	*/
434	static void	510	static void
435	coro_destroy_stacks ()	511	coro_destroy_stacks (pTHX)
436	{	512	{
437	if (!IN_DESTRUCT)	513	if (!IN_DESTRUCT)
438	{	514	{
439	/* is this ugly, I ask? */	515	/* restore all saved variables and stuff */
440	LEAVE_SCOPE (0);	516	LEAVE_SCOPE (0);
		517	assert (PL_tmps_floor == -1);
441		518
442	/* sure it is, but more important: is it correct?? :/ */	519	/* free all temporaries */
443	FREETMPS;	520	FREETMPS;
		521	assert (PL_tmps_ix == -1);
444		522
		523	/* unwind all extra stacks */
445	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	524	POPSTACK_TO (PL_mainstack);
		525
		526	/* unwind main stack */
		527	dounwind (-1);
446	}	528	}
447		529
448	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
449	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
450		532
451	while (PL_curstackinfo)	533	while (PL_curstackinfo)
452	{	534	{
453	PERL_SI *p = PL_curstackinfo->si_prev;	535	PERL_SI *p = PL_curstackinfo->si_prev;
454		536
455	{ /*D*//*remove*/
456	dSP;
457	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
458	PUTBACK; /* possibly superfluous */
459	}
460
461	if (!IN_DESTRUCT)	537	if (!IN_DESTRUCT)
462	{
463	dounwind (-1);/*D*//*remove*/
464	SvREFCNT_dec (PL_curstackinfo->si_stack);	538	SvREFCNT_dec (PL_curstackinfo->si_stack);
465	}
466		539
467	Safefree (PL_curstackinfo->si_cxstack);	540	Safefree (PL_curstackinfo->si_cxstack);
468	Safefree (PL_curstackinfo);	541	Safefree (PL_curstackinfo);
469	PL_curstackinfo = p;	542	PL_curstackinfo = p;
470	}	543	}
…		…
476	#if !PERL_VERSION_ATLEAST (5,9,0)	549	#if !PERL_VERSION_ATLEAST (5,9,0)
477	Safefree (PL_retstack);	550	Safefree (PL_retstack);
478	#endif	551	#endif
479	}	552	}
480		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
481	static void	587	static void
482	setup_coro (struct coro *coro)	588	setup_coro (pTHX_ struct coro *coro)
483	{	589	{
484	/*	590	/*
485	* emulate part of the perl startup here.	591	* emulate part of the perl startup here.
486	*/	592	*/
487
488	coro_init_stacks ();	593	coro_init_stacks (aTHX);
489		594
		595	PL_curcop = &PL_compiling;
		596	PL_in_eval = EVAL_NULL;
490	PL_curcop = 0;	597	PL_comppad = 0;
491	PL_in_eval = 0;
492	PL_curpm = 0;	598	PL_curpm = 0;
		599	PL_localizing = 0;
		600	PL_dirty = 0;
		601	PL_restartop = 0;
493		602
494	{	603	{
495	dSP;	604	dSP;
496	LOGOP myop;	605	LOGOP myop;
497		606
498	/* I have no idea why this is needed, but it is */
499	PUSHMARK (SP);
500
501	SvREFCNT_dec (GvAV (PL_defgv));	607	SvREFCNT_dec (GvAV (PL_defgv));
502	GvAV (PL_defgv) = coro->args; coro->args = 0;	608	GvAV (PL_defgv) = coro->args; coro->args = 0;
503		609
504	Zero (&myop, 1, LOGOP);	610	Zero (&myop, 1, LOGOP);
505	myop.op_next = Nullop;	611	myop.op_next = Nullop;
506	myop.op_flags = OPf_WANT_VOID;	612	myop.op_flags = OPf_WANT_VOID;
507		613
		614	PUSHMARK (SP);
		615	XPUSHs (av_shift (GvAV (PL_defgv)));
		616	PUTBACK;
508	PL_op = (OP *)&myop;	617	PL_op = (OP *)&myop;
509
510	PUSHMARK (SP);
511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
512	PUTBACK;
513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	618	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
514	SPAGAIN;	619	SPAGAIN;
515
516	ENTER; /* necessary e.g. for dounwind */
517	}	620	}
518	}
519		621
		622	ENTER; /* necessary e.g. for dounwind */
		623	}
		624
520	static void	625	static void
521	free_coro_mortal ()	626	free_coro_mortal (pTHX)
522	{	627	{
523	if (coro_mortal)	628	if (coro_mortal)
524	{	629	{
525	SvREFCNT_dec (coro_mortal);	630	SvREFCNT_dec (coro_mortal);
526	coro_mortal = 0;	631	coro_mortal = 0;
527	}	632	}
528	}	633	}
529		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 */
530	static void NOINLINE	679	static void NOINLINE
531	prepare_cctx (coro_cctx *cctx)	680	prepare_cctx (pTHX_ coro_cctx *cctx)
532	{	681	{
533	dSP;	682	dSP;
534	LOGOP myop;	683	LOGOP myop;
535		684
		685	PL_top_env = &PL_start_env;
		686
		687	if (cctx->flags & CC_TRACE)
		688	PL_runops = runops_coro;
		689
536	Zero (&myop, 1, LOGOP);	690	Zero (&myop, 1, LOGOP);
537	myop.op_next = PL_op;	691	myop.op_next = PL_op;
538	myop.op_flags = OPf_WANT_VOID;	692	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
539
540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
541		693
542	PUSHMARK (SP);	694	PUSHMARK (SP);
		695	EXTEND (SP, 2);
		696	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	697	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
544	PUTBACK;	698	PUTBACK;
		699	PL_op = (OP *)&myop;
545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	700	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
546	SPAGAIN;	701	SPAGAIN;
547	}	702	}
548		703
		704	/*
		705	* this is a _very_ stripped down perl interpreter ;)
		706	*/
549	static void	707	static void
550	coro_run (void *arg)	708	coro_run (void *arg)
551	{	709	{
		710	dTHX;
		711
552	/* coro_run is the alternative epilogue of transfer() */	712	/* coro_run is the alternative tail of transfer(), so unlock here. */
553	UNLOCK;	713	UNLOCK;
554		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
555	/*	725	/*
556	* 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
557	*/	731	*/
558	PL_top_env = &PL_start_env;	732	PL_top_env = main_top_env;
559		733	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
560	/* inject call to cctx_init */
561	prepare_cctx ((coro_cctx *)arg);
562
563	/* somebody will hit me for both perl_run and PL_restartop */
564	perl_run (PL_curinterp);
565
566	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
567	abort ();
568	}	734	}
569		735
570	static coro_cctx *	736	static coro_cctx *
571	cctx_new ()	737	cctx_new ()
572	{	738	{
573	coro_cctx *cctx;	739	coro_cctx *cctx;
		740	void *stack_start;
		741	size_t stack_size;
574		742
575	++cctx_count;	743	++cctx_count;
576		744
577	New (0, cctx, 1, coro_cctx);	745	Newz (0, cctx, 1, coro_cctx);
578		746
579	#if HAVE_MMAP	747	#if HAVE_MMAP
580		748
581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	749	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
582	/* mmap suppsedly does allocate-on-write for us */	750	/* mmap supposedly does allocate-on-write for us */
583	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);
584		752
585	if (cctx->sptr == (void *)-1)	753	if (cctx->sptr != (void *)-1)
586	{
587	perror ("FATAL: unable to mmap stack for coroutine");
588	_exit (EXIT_FAILURE);
589	}	754	{
590
591	# if STACKGUARD	755	# if CORO_STACKGUARD
592	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	756	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
593	# 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);
594		767
595	#else
596
597	cctx->ssize = STACKSIZE * (long)sizeof (long);
598	New (0, cctx->sptr, STACKSIZE, long);
599
600	if (!cctx->sptr)	768	if (!cctx->sptr)
601	{	769	{
602	perror ("FATAL: unable to malloc stack for coroutine");	770	perror ("FATAL: unable to allocate stack for coroutine");
603	_exit (EXIT_FAILURE);	771	_exit (EXIT_FAILURE);
604	}	772	}
605		773
606	#endif	774	stack_start = cctx->sptr;
		775	stack_size = cctx->ssize;
		776	}
607		777
608	#if USE_VALGRIND	778	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
609	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
610	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
611	cctx->ssize + (char *)cctx->sptr
612	);
613	#endif
614
615	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);
616		780
617	return cctx;	781	return cctx;
618	}	782	}
619		783
620	static void	784	static void
…		…
623	if (!cctx)	787	if (!cctx)
624	return;	788	return;
625		789
626	--cctx_count;	790	--cctx_count;
627		791
628	#if USE_VALGRIND	792	#if CORO_USE_VALGRIND
629	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	793	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
630	#endif	794	#endif
631		795
632	#if HAVE_MMAP	796	#if HAVE_MMAP
		797	if (cctx->flags & CC_MAPPED)
633	munmap (cctx->sptr, cctx->ssize);	798	munmap (cctx->sptr, cctx->ssize);
634	#else	799	else
		800	#endif
635	Safefree (cctx->sptr);	801	Safefree (cctx->sptr);
636	#endif
637		802
638	Safefree (cctx);	803	Safefree (cctx);
639	}	804	}
640		805
641	static coro_cctx *	806	static coro_cctx *
642	cctx_get ()	807	cctx_get (pTHX)
643	{	808	{
644	coro_cctx *cctx;
645
646	if (cctx_first)	809	while (cctx_first)
647	{	810	{
648	cctx = cctx_first;	811	coro_cctx *cctx = cctx_first;
649	cctx_first = cctx->next;	812	cctx_first = cctx->next;
650	--cctx_idle;	813	--cctx_idle;
651	}	814
652	else	815	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
653	{	816	return cctx;
654	cctx = cctx_new ();	817
655	PL_op = PL_op->op_next;	818	cctx_destroy (cctx);
656	}	819	}
657		820
658	return cctx;	821	return cctx_new ();
659	}	822	}
660		823
661	static void	824	static void
662	cctx_put (coro_cctx *cctx)	825	cctx_put (coro_cctx *cctx)
663	{	826	{
…		…
666	{	829	{
667	coro_cctx *first = cctx_first;	830	coro_cctx *first = cctx_first;
668	cctx_first = first->next;	831	cctx_first = first->next;
669	--cctx_idle;	832	--cctx_idle;
670		833
671	assert (!first->inuse);
672	cctx_destroy (first);	834	cctx_destroy (first);
673	}	835	}
674		836
675	++cctx_idle;	837	++cctx_idle;
676	cctx->next = cctx_first;	838	cctx->next = cctx_first;
677	cctx_first = cctx;	839	cctx_first = cctx;
678	}	840	}
679		841
		842	/** coroutine switching *****************************************************/
		843
680	/* never call directly, always through the coro_state_transfer global variable */	844	/* never call directly, always through the coro_state_transfer global variable */
681	static void NOINLINE	845	static void NOINLINE
682	transfer (struct coro *prev, struct coro *next, int flags)	846	transfer (pTHX_ struct coro *prev, struct coro *next)
683	{	847	{
684	dSTACKLEVEL;	848	dSTACKLEVEL;
685		849
686	/* sometimes transfer is only called to set idle_sp */	850	/* sometimes transfer is only called to set idle_sp */
687	if (flags == TRANSFER_SET_STACKLEVEL)	851	if (!next)
		852	{
688	((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	}
689	else if (prev != next)	856	else if (prev != next)
690	{	857	{
691	coro_cctx *prev__cctx;	858	coro_cctx *prev__cctx;
692		859
693	if (!prev->cctx)	860	if (prev->flags & CF_NEW)
694	{	861	{
695	/* create a new empty context */	862	/* create a new empty context */
696	Newz (0, prev->cctx, 1, coro_cctx);	863	Newz (0, prev->cctx, 1, coro_cctx);
697	prev->cctx->inuse = 1;	864	prev->flags &= ~CF_NEW;
698	prev->flags |= CF_RUNNING;	865	prev->flags |= CF_RUNNING;
699	}	866	}
700		867
		868	/*TODO: must not croak here */
701	if (!prev->flags & CF_RUNNING)	869	if (!prev->flags & CF_RUNNING)
702	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");
703		871
704	if (next->flags & CF_RUNNING)	872	if (next->flags & CF_RUNNING)
705	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");
706		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");
		877
707	prev->flags &= ~CF_RUNNING;	878	prev->flags &= ~CF_RUNNING;
708	next->flags |= CF_RUNNING;	879	next->flags |= CF_RUNNING;
709		880
710	LOCK;	881	LOCK;
711		882
712	if (next->mainstack)	883	if (next->flags & CF_NEW)
713	{	884	{
714	/* coroutine already started */	885	/* need to start coroutine */
715	SAVE (prev, flags);	886	next->flags &= ~CF_NEW;
716	LOAD (next);	887	/* first get rid of the old state */
		888	save_perl (aTHX_ prev);
		889	/* setup coroutine call */
		890	setup_coro (aTHX_ next);
717	}	891	}
718	else	892	else
719	{	893	{
720	/* need to start coroutine */	894	/* coroutine already started */
721	/* first get rid of the old state */	895	save_perl (aTHX_ prev);
722	SAVE (prev, -1);	896	load_perl (aTHX_ next);
723	/* setup coroutine call */
724	setup_coro (next);
725	/* need a new stack */
726	assert (!next->stack);
727	}	897	}
728		898
729	prev__cctx = prev->cctx;	899	prev__cctx = prev->cctx;
730		900
731	/* possibly "free" the cctx */	901	/* possibly "free" the cctx */
732	if (prev__cctx->idle_sp == STACKLEVEL)	902	if (prev__cctx->idle_sp == STACKLEVEL)
733	{	903	{
734	/* 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 */
735	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));
		906
		907	prev->cctx = 0;
736		908
737	cctx_put (prev__cctx);	909	cctx_put (prev__cctx);
738	prev->cctx = 0;
739	}	910	}
740		911
741	if (!next->cctx)	912	if (!next->cctx)
742	next->cctx = cctx_get ();	913	next->cctx = cctx_get (aTHX);
743		914
744	if (prev__cctx != next->cctx)	915	if (prev__cctx != next->cctx)
745	{	916	{
746	assert ( prev__cctx->inuse);
747	assert (!next->cctx->inuse);
748
749	prev__cctx->inuse = 0;
750	next->cctx->inuse = 1;
751
752	prev__cctx->top_env = PL_top_env;	917	prev__cctx->top_env = PL_top_env;
753	PL_top_env = next->cctx->top_env;	918	PL_top_env = next->cctx->top_env;
754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	919	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
755	}	920	}
756		921
757	free_coro_mortal ();	922	free_coro_mortal (aTHX);
758
759	UNLOCK;	923	UNLOCK;
760	}	924	}
761	}	925	}
762		926
763	struct transfer_args	927	struct transfer_args
764	{	928	{
765	struct coro *prev, *next;	929	struct coro *prev, *next;
766	int flags;
767	};	930	};
768		931
769	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	932	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
770		933
		934	/** high level stuff ********************************************************/
		935
771	static void	936	static int
772	coro_state_destroy (struct coro *coro)	937	coro_state_destroy (pTHX_ struct coro *coro)
773	{	938	{
774	if (coro->refcnt--)	939	if (coro->flags & CF_DESTROYED)
775	return;	940	return 0;
776		941
		942	coro->flags |= CF_DESTROYED;
		943
777	if (coro->flags & CF_RUNNING)	944	if (coro->flags & CF_READY)
778	croak ("FATAL: tried to destroy currently running coroutine");	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 */
779		954
780	if (coro->mainstack && coro->mainstack != main_mainstack)	955	if (coro->mainstack && coro->mainstack != main_mainstack)
781	{	956	{
782	struct coro temp;	957	struct coro temp;
783		958
784	SAVE ((&temp), TRANSFER_SAVE_ALL);	959	assert (!(coro->flags & CF_RUNNING));
785	LOAD (coro);
786		960
		961	Zero (&temp, 1, struct coro);
		962	temp.save = CORO_SAVE_ALL;
		963
		964	if (coro->flags & CF_RUNNING)
		965	croak ("FATAL: tried to destroy currently running coroutine");
		966
		967	save_perl (aTHX_ &temp);
		968	load_perl (aTHX_ coro);
		969
787	coro_destroy_stacks ();	970	coro_destroy_stacks (aTHX);
788		971
789	LOAD ((&temp)); /* this will get rid of defsv etc.. */	972	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
790		973
791	coro->mainstack = 0;	974	coro->mainstack = 0;
792	}	975	}
793		976
794	cctx_destroy (coro->cctx);	977	cctx_destroy (coro->cctx);
795	SvREFCNT_dec (coro->args);	978	SvREFCNT_dec (coro->args);
796	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;
797	}	985	}
798		986
799	static int	987	static int
800	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	988	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
801	{	989	{
802	struct coro *coro = (struct coro *)mg->mg_ptr;	990	struct coro *coro = (struct coro *)mg->mg_ptr;
803	mg->mg_ptr = 0;	991	mg->mg_ptr = 0;
804		992
		993	coro->hv = 0;
		994
		995	if (--coro->refcnt < 0)
		996	{
805	coro_state_destroy (coro);	997	coro_state_destroy (aTHX_ coro);
		998	Safefree (coro);
		999	}
806		1000
807	return 0;	1001	return 0;
808	}	1002	}
809		1003
810	static int	1004	static int
…		…
817	return 0;	1011	return 0;
818	}	1012	}
819		1013
820	static MGVTBL coro_state_vtbl = {	1014	static MGVTBL coro_state_vtbl = {
821	0, 0, 0, 0,	1015	0, 0, 0, 0,
822	coro_state_clear,	1016	coro_state_free,
823	0,	1017	0,
824	#ifdef MGf_DUP	1018	#ifdef MGf_DUP
825	coro_state_dup,	1019	coro_state_dup,
826	#else	1020	#else
827	# define MGf_DUP 0	1021	# define MGf_DUP 0
828	#endif	1022	#endif
829	};	1023	};
830		1024
831	static struct coro *	1025	static struct coro *
832	SvSTATE (SV *coro)	1026	SvSTATE_ (pTHX_ SV *coro)
833	{	1027	{
834	HV *stash;	1028	HV *stash;
835	MAGIC *mg;	1029	MAGIC *mg;
836		1030
837	if (SvROK (coro))	1031	if (SvROK (coro))
…		…
843	/* very slow, but rare, check */	1037	/* very slow, but rare, check */
844	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1038	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
845	croak ("Coro::State object required");	1039	croak ("Coro::State object required");
846	}	1040	}
847		1041
848	mg = SvMAGIC (coro);	1042	mg = CORO_MAGIC (coro);
849	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;	1043	return (struct coro *)mg->mg_ptr;
851	}	1044	}
852		1045
		1046	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1047
853	static void	1048	static void
854	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)
855	{	1050	{
856	ta->prev = SvSTATE (prev);	1051	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	1052	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;
859	}	1053	}
860		1054
861	static void	1055	static void
862	api_transfer (SV *prev, SV *next, int flags)	1056	api_transfer (SV *prev_sv, SV *next_sv)
863	{	1057	{
864	dTHX;	1058	dTHX;
865	struct transfer_args ta;	1059	struct transfer_args ta;
866		1060
867	prepare_transfer (&ta, prev, next, flags);	1061	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
868	TRANSFER (ta);	1062	TRANSFER (ta);
869	}	1063	}
870		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
871	/** Coro ********************************************************************/	1078	/** Coro ********************************************************************/
872		1079
873	#define PRIO_MAX 3
874	#define PRIO_HIGH 1
875	#define PRIO_NORMAL 0
876	#define PRIO_LOW -1
877	#define PRIO_IDLE -3
878	#define PRIO_MIN -4
879
880	/* for Coro.pm */
881	static GV *coro_current, *coro_idle;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;
884
885	static void	1080	static void
886	coro_enq (SV *coro_sv)	1081	coro_enq (pTHX_ SV *coro_sv)
887	{	1082	{
888	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);
889	coro_nready++;
890	}	1084	}
891		1085
892	static SV *	1086	static SV *
893	coro_deq (int min_prio)	1087	coro_deq (pTHX_ int min_prio)
894	{	1088	{
895	int prio = PRIO_MAX - PRIO_MIN;	1089	int prio = PRIO_MAX - PRIO_MIN;
896		1090
897	min_prio -= PRIO_MIN;	1091	min_prio -= PRIO_MIN;
898	if (min_prio < 0)	1092	if (min_prio < 0)
899	min_prio = 0;	1093	min_prio = 0;
900		1094
901	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1095	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
902	if (AvFILLp (coro_ready [prio]) >= 0)	1096	if (AvFILLp (coro_ready [prio]) >= 0)
903	{
904	coro_nready--;
905	return av_shift (coro_ready [prio]);	1097	return av_shift (coro_ready [prio]);
906	}
907		1098
908	return 0;	1099	return 0;
909	}	1100	}
910		1101
911	static int	1102	static int
912	api_ready (SV *coro_sv)	1103	api_ready (SV *coro_sv)
913	{	1104	{
		1105	dTHX;
914	struct coro *coro;	1106	struct coro *coro;
915		1107
916	if (SvROK (coro_sv))	1108	if (SvROK (coro_sv))
917	coro_sv = SvRV (coro_sv);	1109	coro_sv = SvRV (coro_sv);
918		1110
919	coro = SvSTATE (coro_sv);	1111	coro = SvSTATE (coro_sv);
920		1112
921	if (coro->flags & CF_READY)	1113	if (coro->flags & CF_READY)
922	return 0;	1114	return 0;
923		1115
924	if (coro->flags & CF_RUNNING)
925	croak ("Coro::ready called on currently running coroutine");
926
927	coro->flags |= CF_READY;	1116	coro->flags |= CF_READY;
928		1117
929	LOCK;	1118	LOCK;
930	coro_enq (SvREFCNT_inc (coro_sv));	1119	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1120	++coro_nready;
931	UNLOCK;	1121	UNLOCK;
932		1122
933	return 1;	1123	return 1;
934	}	1124	}
935		1125
936	static int	1126	static int
937	api_is_ready (SV *coro_sv)	1127	api_is_ready (SV *coro_sv)
938	{	1128	{
		1129	dTHX;
939	return !!SvSTATE (coro_sv)->flags & CF_READY;	1130	return !!(SvSTATE (coro_sv)->flags & CF_READY);
940	}	1131	}
941		1132
942	static void	1133	static void
943	prepare_schedule (struct transfer_args *ta)	1134	prepare_schedule (pTHX_ struct transfer_args *ta)
944	{	1135	{
945	SV *current, *prev, *next;	1136	SV *prev_sv, *next_sv;
946
947	current = GvSV (coro_current);
948		1137
949	for (;;)	1138	for (;;)
950	{	1139	{
951	LOCK;	1140	LOCK;
952	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;
953	UNLOCK;	1173	UNLOCK;
954
955	if (next)
956	break;	1174	break;
957
958	{
959	dSP;
960
961	ENTER;
962	SAVETMPS;
963
964	PUSHMARK (SP);
965	PUTBACK;
966	call_sv (GvSV (coro_idle), G_DISCARD);
967
968	FREETMPS;
969	LEAVE;
970	}	1175	}
971	}
972
973	prev = SvRV (current);
974	SvRV (current) = next;
975		1176
976	/* 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
977	LOCK;	1185	LOCK;
978	free_coro_mortal ();	1186	free_coro_mortal (aTHX);
		1187	coro_mortal = prev_sv;
979	UNLOCK;	1188	UNLOCK;
980	coro_mortal = prev;
981
982	ta->prev = SvSTATE (prev);
983	ta->next = SvSTATE (next);
984	ta->flags = TRANSFER_SAVE_ALL;
985
986	ta->next->flags &= ~CF_READY;
987	}	1189	}
988		1190
989	static void	1191	static void
990	prepare_cede (struct transfer_args *ta)	1192	prepare_cede (pTHX_ struct transfer_args *ta)
991	{	1193	{
992	api_ready (GvSV (coro_current));	1194	api_ready (coro_current);
993
994	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;
995	}	1210	}
996		1211
997	static void	1212	static void
998	api_schedule (void)	1213	api_schedule (void)
999	{	1214	{
1000	dTHX;	1215	dTHX;
1001	struct transfer_args ta;	1216	struct transfer_args ta;
1002		1217
1003	prepare_schedule (&ta);	1218	prepare_schedule (aTHX_ &ta);
1004	TRANSFER (ta);	1219	TRANSFER (ta);
1005	}	1220	}
1006		1221
1007	static void	1222	static int
1008	api_cede (void)	1223	api_cede (void)
1009	{	1224	{
1010	dTHX;	1225	dTHX;
1011	struct transfer_args ta;	1226	struct transfer_args ta;
1012		1227
1013	prepare_cede (&ta);	1228	prepare_cede (aTHX_ &ta);
		1229
		1230	if (ta.prev != ta.next)
		1231	{
1014	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;
1015	}	1252	}
1016		1253
1017	MODULE = Coro::State PACKAGE = Coro::State	1254	MODULE = Coro::State PACKAGE = Coro::State
1018		1255
1019	PROTOTYPES: DISABLE	1256	PROTOTYPES: DISABLE
…		…
1025	#endif	1262	#endif
1026	BOOT_PAGESIZE;	1263	BOOT_PAGESIZE;
1027		1264
1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1265	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029		1266
1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1267	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1268	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1032	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));
1033		1274
1034	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;
1035		1280
1036	coroapi.ver = CORO_API_VERSION;	1281	coroapi.ver = CORO_API_VERSION;
1037	coroapi.transfer = api_transfer;	1282	coroapi.transfer = api_transfer;
1038		1283
1039	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1284	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1047	HV *hv;	1292	HV *hv;
1048	int i;	1293	int i;
1049		1294
1050	Newz (0, coro, 1, struct coro);	1295	Newz (0, coro, 1, struct coro);
1051	coro->args = newAV ();	1296	coro->args = newAV ();
		1297	coro->save = CORO_SAVE_DEF;
		1298	coro->flags = CF_NEW;
1052		1299
		1300	if (coro_first) coro_first->prev = coro;
		1301	coro->next = coro_first;
		1302	coro_first = coro;
		1303
1053	hv = newHV ();	1304	coro->hv = hv = newHV ();
1054	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;
1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1306	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056		1307
1057	for (i = 1; i < items; i++)	1308	for (i = 1; i < items; i++)
1058	av_push (coro->args, newSVsv (ST (i)));	1309	av_push (coro->args, newSVsv (ST (i)));
1059	}	1310	}
1060	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:
1061	RETVAL	1330	RETVAL
1062		1331
1063	void	1332	void
1064	_set_stacklevel (...)	1333	_set_stacklevel (...)
1065	ALIAS:	1334	ALIAS:
1066	Coro::State::transfer = 1	1335	Coro::State::transfer = 1
1067	Coro::schedule = 2	1336	Coro::schedule = 2
1068	Coro::cede = 3	1337	Coro::cede = 3
1069	Coro::Cont::yield = 4	1338	Coro::cede_notself = 4
1070	CODE:	1339	CODE:
1071	{	1340	{
1072	struct transfer_args ta;	1341	struct transfer_args ta;
1073		1342
1074	switch (ix)	1343	switch (ix)
1075	{	1344	{
1076	case 0:	1345	case 0:
1077	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1346	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1078	ta.next = 0;	1347	ta.next = 0;
1079	ta.flags = TRANSFER_SET_STACKLEVEL;
1080	break;	1348	break;
1081		1349
1082	case 1:	1350	case 1:
1083	if (items != 3)	1351	if (items != 2)
1084	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);
1085		1353
1086	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1354	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1087	break;	1355	break;
1088		1356
1089	case 2:	1357	case 2:
1090	prepare_schedule (&ta);	1358	prepare_schedule (aTHX_ &ta);
1091	break;	1359	break;
1092		1360
1093	case 3:	1361	case 3:
1094	prepare_cede (&ta);	1362	prepare_cede (aTHX_ &ta);
1095	break;	1363	break;
1096		1364
1097	case 4:	1365	case 4:
1098	{	1366	if (!prepare_cede_notself (aTHX_ &ta))
1099	SV *yieldstack;	1367	XSRETURN_EMPTY;
1100	SV *sv;
1101	AV *defav = GvAV (PL_defgv);
1102		1368
1103	yieldstack = *hv_fetch (
1104	(HV *)SvRV (GvSV (coro_current)),
1105	"yieldstack", sizeof ("yieldstack") - 1,
1106	0
1107	);
1108
1109	/* set up @_ -- ugly */
1110	av_clear (defav);
1111	av_fill (defav, items - 1);
1112	while (items--)
1113	av_store (defav, items, SvREFCNT_inc (ST(items)));
1114
1115	sv = av_pop ((AV *)SvRV (yieldstack));
1116	ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1117	ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1118	ta.flags = 0;
1119	SvREFCNT_dec (sv);
1120	}
1121	break;	1369	break;
1122
1123	}	1370	}
1124		1371
		1372	BARRIER;
1125	TRANSFER (ta);	1373	TRANSFER (ta);
1126	}
1127		1374
1128	void	1375	if (GIMME_V != G_VOID && ta.next != ta.prev)
1129	_clone_state_from (SV *dst, SV *src)	1376	XSRETURN_YES;
		1377	}
		1378
		1379	bool
		1380	_destroy (SV *coro_sv)
1130	CODE:	1381	CODE:
1131	{	1382	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1132	struct coro *coro_src = SvSTATE (src);	1383	OUTPUT:
1133		1384	RETVAL
1134	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1135
1136	++coro_src->refcnt;
1137	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1138	}
1139		1385
1140	void	1386	void
1141	_exit (code)	1387	_exit (code)
1142	int code	1388	int code
1143	PROTOTYPE: $	1389	PROTOTYPE: $
1144	CODE:	1390	CODE:
1145	_exit (code);	1391	_exit (code);
1146		1392
1147	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
1148	cctx_count ()	1403	cctx_count ()
1149	CODE:	1404	CODE:
1150	RETVAL = cctx_count;	1405	RETVAL = cctx_count;
1151	OUTPUT:	1406	OUTPUT:
1152	RETVAL	1407	RETVAL
…		…
1156	CODE:	1411	CODE:
1157	RETVAL = cctx_idle;	1412	RETVAL = cctx_idle;
1158	OUTPUT:	1413	OUTPUT:
1159	RETVAL	1414	RETVAL
1160		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
1161	MODULE = Coro::State PACKAGE = Coro	1522	MODULE = Coro::State PACKAGE = Coro
1162		1523
1163	BOOT:	1524	BOOT:
1164	{	1525	{
1165	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);
1166		1534
1167	coro_stash = gv_stashpv ("Coro", TRUE);	1535	coro_stash = gv_stashpv ("Coro", TRUE);
1168		1536
1169	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1537	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1170	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1538	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1171	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1539	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1172	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1540	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1173	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1541	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1174	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1542	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1175		1543
1176	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1177	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1178
1179	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1544	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1180	coro_ready[i] = newAV ();	1545	coro_ready[i] = newAV ();
1181		1546
1182	{	1547	{
1183	SV *sv = perl_get_sv("Coro::API", 1);	1548	SV *sv = perl_get_sv("Coro::API", 1);
1184		1549
1185	coroapi.schedule = api_schedule;	1550	coroapi.schedule = api_schedule;
		1551	coroapi.save = api_save;
1186	coroapi.cede = api_cede;	1552	coroapi.cede = api_cede;
		1553	coroapi.cede_notself = api_cede_notself;
1187	coroapi.ready = api_ready;	1554	coroapi.ready = api_ready;
1188	coroapi.is_ready = api_is_ready;	1555	coroapi.is_ready = api_is_ready;
1189	coroapi.nready = &coro_nready;	1556	coroapi.nready = &coro_nready;
1190	coroapi.current = coro_current;	1557	coroapi.current = coro_current;
1191		1558
1192	GCoroAPI = &coroapi;	1559	GCoroAPI = &coroapi;
1193	sv_setiv (sv, (IV)&coroapi);	1560	sv_setiv (sv, (IV)&coroapi);
1194	SvREADONLY_on (sv);	1561	SvREADONLY_on (sv);
1195	}	1562	}
1196	}	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)));
1197		1571
1198	int	1572	int
1199	prio (Coro::State coro, int newprio = 0)	1573	prio (Coro::State coro, int newprio = 0)
1200	ALIAS:	1574	ALIAS:
1201	nice = 1	1575	nice = 1
…		…
1204	RETVAL = coro->prio;	1578	RETVAL = coro->prio;
1205		1579
1206	if (items > 1)	1580	if (items > 1)
1207	{	1581	{
1208	if (ix)	1582	if (ix)
1209	newprio += coro->prio;	1583	newprio = coro->prio - newprio;
1210		1584
1211	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1585	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1212	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1586	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1213		1587
1214	coro->prio = newprio;	1588	coro->prio = newprio;
1215	}	1589	}
1216	}	1590	}
		1591	OUTPUT:
		1592	RETVAL
1217		1593
1218	SV *	1594	SV *
1219	ready (SV *self)	1595	ready (SV *self)
1220	PROTOTYPE: $	1596	PROTOTYPE: $
1221	CODE:	1597	CODE:
1222	RETVAL = boolSV (api_ready (self));	1598	RETVAL = boolSV (api_ready (self));
1223	OUTPUT:	1599	OUTPUT:
1224	RETVAL	1600	RETVAL
1225		1601
1226	SV *
1227	is_ready (SV *self)
1228	PROTOTYPE: $
1229	CODE:
1230	RETVAL = boolSV (api_is_ready (self));
1231	OUTPUT:
1232	RETVAL
1233
1234	int	1602	int
1235	nready (...)	1603	nready (...)
1236	PROTOTYPE:	1604	PROTOTYPE:
1237	CODE:	1605	CODE:
1238	RETVAL = coro_nready;	1606	RETVAL = coro_nready;
1239	OUTPUT:	1607	OUTPUT:
1240	RETVAL	1608	RETVAL
1241		1609
		1610	# for async_pool speedup
		1611	void
		1612	_pool_1 (SV *cb)
		1613	CODE:
		1614	{
		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
		1662
1242	MODULE = Coro::State PACKAGE = Coro::AIO	1663	MODULE = Coro::State PACKAGE = Coro::AIO
1243		1664
1244	SV *	1665	SV *
1245	_get_state ()	1666	_get_state ()
1246	CODE:	1667	CODE:
1247	{	1668	{
1248	struct {	1669	struct io_state *data;
1249	int errorno;
1250	int laststype;
1251	int laststatval;
1252	Stat_t statcache;
1253	} data;
1254		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
1255	data.errorno = errno;	1676	data->errorno = errno;
1256	data.laststype = PL_laststype;	1677	data->laststype = PL_laststype;
1257	data.laststatval = PL_laststatval;	1678	data->laststatval = PL_laststatval;
1258	data.statcache = PL_statcache;	1679	data->statcache = PL_statcache;
1259
1260	RETVAL = newSVpvn ((char *)&data, sizeof data);
1261	}	1680	}
1262	OUTPUT:	1681	OUTPUT:
1263	RETVAL	1682	RETVAL
1264		1683
1265	void	1684	void
1266	_set_state (char *data_)	1685	_set_state (char *data_)
1267	PROTOTYPE: $	1686	PROTOTYPE: $
1268	CODE:	1687	CODE:
1269	{	1688	{
1270	struct {	1689	struct io_state *data = (void *)data_;
1271	int errorno;
1272	int laststype;
1273	int laststatval;
1274	Stat_t statcache;
1275	} *data = (void *)data_;
1276		1690
1277	errno = data->errorno;	1691	errno = data->errorno;
1278	PL_laststype = data->laststype;	1692	PL_laststype = data->laststype;
1279	PL_laststatval = data->laststatval;	1693	PL_laststatval = data->laststatval;
1280	PL_statcache = data->statcache;	1694	PL_statcache = data->statcache;
1281	}	1695	}
		1696

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines