ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.109 by root, Mon Nov 27 18:45:29 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	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	|| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	11	#include <stdio.h>
41	#include <errno.h>	12	#include <errno.h>
42		13	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		14
51	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
52	# include <unistd.h>	16	# include <unistd.h>
53	# include <sys/mman.h>	17	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
69	#else	33	#else
70	# define PAGESIZE 0	34	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
72	#endif	36	#endif
73		37
74	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
76	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	|| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
79		97
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		99
82	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	103	#else
85	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
86	#endif	106	#endif
87		107
88	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
89		109
90	#include "CoroAPI.h"	110	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		111
94	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	116	#else
99	# define LOCK (void)0	117	# define LOCK (void)0
100	# define UNLOCK (void)0	118	# define UNLOCK (void)0
101	#endif	119	#endif
102		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
104	static AV *main_mainstack; /* used to differentiate between $main and others */	132	static AV *main_mainstack; /* used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
105	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
106	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
107		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
108	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_TRACE = 0x02,
		148	CC_NOREUSE = 0x04, /* throw this away after tracing */
		149	};
110		150
111	/* this is a structure representing a c-level coroutine */	151	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	152	typedef struct coro_cctx {
113	struct coro_cctx *next;	153	struct coro_cctx *next;
114		154
115	/* the stack */	155	/* the stack */
116	void *sptr;	156	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	157	size_t ssize;
118		158
119	/* cpu state */	159	/* cpu state */
120	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 */
121	JMPENV *top_env;	162	JMPENV *top_env;
122	coro_context cctx;	163	coro_context cctx;
123		164
124	#if USE_VALGRIND	165	#if CORO_USE_VALGRIND
125	int valgrind_id;	166	int valgrind_id;
126	#endif	167	#endif
		168	unsigned char flags;
127	} coro_cctx;	169	} coro_cctx;
		170
		171	enum {
		172	CF_RUNNING = 0x0001, /* coroutine is running */
		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 */
		176	};
128		177
129	/* this is a structure representing a perl-level coroutine */	178	/* this is a structure representing a perl-level coroutine */
130	struct coro {	179	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	180	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	181	coro_cctx *cctx;
133		182
134	/* data associated with this coroutine (initial args) */	183	/* data associated with this coroutine (initial args) */
135	AV *args;	184	AV *args;
136	int refcnt;	185	int refcnt;
		186	int save; /* CORO_SAVE flags */
		187	int flags; /* CF_ flags */
137		188
138	/* optionally saved, might be zero */	189	/* optionally saved, might be zero */
139	AV *defav;	190	AV *defav; /* @_ */
140	SV *defsv;	191	SV *defsv; /* $_ */
141	SV *errsv;	192	SV *errsv; /* $@ */
		193	GV *deffh; /* default filehandle */
		194	SV *irssv; /* $/ */
		195	SV *irssv_sv; /* real $/ cache */
142		196
143	#define VAR(name,type) type name;	197	#define VAR(name,type) type name;
144	# include "state.h"	198	# include "state.h"
145	#undef VAR	199	#undef VAR
146		200
147	/* coro process data */	201	/* coro process data */
148	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 */
149	};	207	};
150		208
151	typedef struct coro *Coro__State;	209	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	210	typedef struct coro *Coro__State_or_hashref;
153		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
154	static AV *	229	static AV *
155	coro_clone_padlist (CV *cv)	230	coro_clone_padlist (pTHX_ CV *cv)
156	{	231	{
157	AV *padlist = CvPADLIST (cv);	232	AV *padlist = CvPADLIST (cv);
158	AV *newpadlist, *newpad;	233	AV *newpadlist, *newpad;
159		234
160	newpadlist = newAV ();	235	newpadlist = newAV ();
…		…
172		247
173	return newpadlist;	248	return newpadlist;
174	}	249	}
175		250
176	static void	251	static void
177	free_padlist (AV *padlist)	252	free_padlist (pTHX_ AV *padlist)
178	{	253	{
179	/* may be during global destruction */	254	/* may be during global destruction */
180	if (SvREFCNT (padlist))	255	if (SvREFCNT (padlist))
181	{	256	{
182	I32 i = AvFILLp (padlist);	257	I32 i = AvFILLp (padlist);
…		…
203	AV *padlist;	278	AV *padlist;
204	AV *av = (AV *)mg->mg_obj;	279	AV *av = (AV *)mg->mg_obj;
205		280
206	/* casting is fun. */	281	/* casting is fun. */
207	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	282	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
208	free_padlist (padlist);	283	free_padlist (aTHX_ padlist);
209		284
210	SvREFCNT_dec (av);	285	SvREFCNT_dec (av);
211		286
212	return 0;	287	return 0;
213	}	288	}
…		…
223	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	298	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
224	: 0	299	: 0
225		300
226	/* the next two functions merely cache the padlists */	301	/* the next two functions merely cache the padlists */
227	static void	302	static void
228	get_padlist (CV *cv)	303	get_padlist (pTHX_ CV *cv)
229	{	304	{
230	MAGIC *mg = CORO_MAGIC (cv);	305	MAGIC *mg = CORO_MAGIC (cv);
231	AV *av;	306	AV *av;
232		307
233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	308	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	309	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	310	else
236	{	311	{
237	#if 0	312	#if CORO_PREFER_PERL_FUNCTIONS
238	/* this is probably cleaner, but also slower? */	313	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (cv);	314	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	315	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	316	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	317	SvREFCNT_dec (cp);
243	#else	318	#else
244	CvPADLIST (cv) = coro_clone_padlist (cv);	319	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
245	#endif	320	#endif
246	}	321	}
247	}	322	}
248		323
249	static void	324	static void
250	put_padlist (CV *cv)	325	put_padlist (pTHX_ CV *cv)
251	{	326	{
252	MAGIC *mg = CORO_MAGIC (cv);	327	MAGIC *mg = CORO_MAGIC (cv);
253	AV *av;	328	AV *av;
254		329
255	if (!mg)	330	if (!mg)
…		…
266	av_extend (av, AvMAX (av) + 1);	341	av_extend (av, AvMAX (av) + 1);
267		342
268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	343	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
269	}	344	}
270		345
		346	/** load & save, init *******************************************************/
		347
271	#define SB do {	348	#define SB do {
272	#define SE } while (0)	349	#define SE } while (0)
273		350
274	#define LOAD(state) load_state((state));
275	#define SAVE(state,flags) save_state((state),(flags));
276
277	#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
278		352
279	static void	353	static void
280	load_state(Coro__State c)	354	load_perl (pTHX_ Coro__State c)
281	{	355	{
282	#define VAR(name,type) PL_ ## name = c->name;	356	#define VAR(name,type) PL_ ## name = c->name;
283	# include "state.h"	357	# include "state.h"
284	#undef VAR	358	#undef VAR
285		359
286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
288	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	}
289		379
290	{	380	{
291	dSP;	381	dSP;
292	CV *cv;	382	CV *cv;
293		383
294	/* now do the ugly restore mess */	384	/* now do the ugly restore mess */
295	while ((cv = (CV *)POPs))	385	while ((cv = (CV *)POPs))
296	{	386	{
297	put_padlist (cv); /* mark this padlist as available */	387	put_padlist (aTHX_ cv); /* mark this padlist as available */
298	CvDEPTH (cv) = PTR2IV (POPs);	388	CvDEPTH (cv) = PTR2IV (POPs);
299	CvPADLIST (cv) = (AV *)POPs;	389	CvPADLIST (cv) = (AV *)POPs;
300	}	390	}
301		391
302	PUTBACK;	392	PUTBACK;
303	}	393	}
304	}	394	}
305		395
306	static void	396	static void
307	save_state(Coro__State c, int flags)	397	save_perl (pTHX_ Coro__State c)
308	{	398	{
309	{	399	{
310	dSP;	400	dSP;
311	I32 cxix = cxstack_ix;	401	I32 cxix = cxstack_ix;
312	PERL_CONTEXT *ccstk = cxstack;	402	PERL_CONTEXT *ccstk = cxstack;
…		…
315	/*	405	/*
316	* 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
317	* (and reinitialize) all cv's in the whole callchain :(	407	* (and reinitialize) all cv's in the whole callchain :(
318	*/	408	*/
319		409
320	PUSHs (Nullsv);	410	XPUSHs (Nullsv);
321	/* this loop was inspired by pp_caller */	411	/* this loop was inspired by pp_caller */
322	for (;;)	412	for (;;)
323	{	413	{
324	while (cxix >= 0)	414	while (cxix >= 0)
325	{	415	{
326	PERL_CONTEXT *cx = &ccstk[cxix--];	416	PERL_CONTEXT *cx = &ccstk[cxix--];
327		417
328	if (CxTYPE(cx) == CXt_SUB)	418	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
329	{	419	{
330	CV *cv = cx->blk_sub.cv;	420	CV *cv = cx->blk_sub.cv;
331		421
332	if (CvDEPTH (cv))	422	if (CvDEPTH (cv))
333	{	423	{
334	EXTEND (SP, 3);	424	EXTEND (SP, 3);
335
336	PUSHs ((SV *)CvPADLIST(cv));	425	PUSHs ((SV *)CvPADLIST (cv));
337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	426	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
338	PUSHs ((SV *)cv);	427	PUSHs ((SV *)cv);
339		428
340	CvDEPTH (cv) = 0;	429	CvDEPTH (cv) = 0;
341	get_padlist (cv);	430	get_padlist (aTHX_ cv);
342	}	431	}
343	}	432	}
344	#ifdef CXt_FORMAT
345	else if (CxTYPE(cx) == CXt_FORMAT)
346	{
347	/* I never used formats, so how should I know how these are implemented? */
348	/* my bold guess is as a simple, plain sub... */
349	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
350	}
351	#endif
352	}	433	}
353		434
354	if (top_si->si_type == PERLSI_MAIN)	435	if (top_si->si_type == PERLSI_MAIN)
355	break;	436	break;
356		437
357	top_si = top_si->si_prev;	438	top_si = top_si->si_prev;
358	ccstk = top_si->si_cxstack;	439	ccstk = top_si->si_cxstack;
359	cxix = top_si->si_cxix;	440	cxix = top_si->si_cxix;
360	}	441	}
361		442
362	PUTBACK;	443	PUTBACK;
363	}	444	}
364		445
365	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;
366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	447	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
367	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;
368		451
369	#define VAR(name,type)c->name = PL_ ## name;	452	#define VAR(name,type)c->name = PL_ ## name;
370	# include "state.h"	453	# include "state.h"
371	#undef VAR	454	#undef VAR
372	}	455	}
…		…
375	* allocate various perl stacks. This is an exact copy	458	* allocate various perl stacks. This is an exact copy
376	* of perl.c:init_stacks, except that it uses less memory	459	* of perl.c:init_stacks, except that it uses less memory
377	* on the (sometimes correct) assumption that coroutines do	460	* on the (sometimes correct) assumption that coroutines do
378	* not usually need a lot of stackspace.	461	* not usually need a lot of stackspace.
379	*/	462	*/
		463	#if CORO_PREFER_PERL_FUNCTIONS
		464	# define coro_init_stacks init_stacks
		465	#else
380	static void	466	static void
381	coro_init_stacks ()	467	coro_init_stacks (pTHX)
382	{	468	{
383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	469	PL_curstackinfo = new_stackinfo(64, 6);
384	PL_curstackinfo->si_type = PERLSI_MAIN;	470	PL_curstackinfo->si_type = PERLSI_MAIN;
385	PL_curstack = PL_curstackinfo->si_stack;	471	PL_curstack = PL_curstackinfo->si_stack;
386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
387		473
388	PL_stack_base = AvARRAY(PL_curstack);	474	PL_stack_base = AvARRAY(PL_curstack);
389	PL_stack_sp = PL_stack_base;	475	PL_stack_sp = PL_stack_base;
390	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
391		477
392	New(50,PL_tmps_stack,96,SV*);	478	New(50,PL_tmps_stack,64,SV*);
393	PL_tmps_floor = -1;	479	PL_tmps_floor = -1;
394	PL_tmps_ix = -1;	480	PL_tmps_ix = -1;
395	PL_tmps_max = 96;	481	PL_tmps_max = 64;
396		482
397	New(54,PL_markstack,16,I32);	483	New(54,PL_markstack,16,I32);
398	PL_markstack_ptr = PL_markstack;	484	PL_markstack_ptr = PL_markstack;
399	PL_markstack_max = PL_markstack + 16;	485	PL_markstack_max = PL_markstack + 16;
400		486
…		…
404		490
405	New(54,PL_scopestack,16,I32);	491	New(54,PL_scopestack,16,I32);
406	PL_scopestack_ix = 0;	492	PL_scopestack_ix = 0;
407	PL_scopestack_max = 16;	493	PL_scopestack_max = 16;
408		494
409	New(54,PL_savestack,96,ANY);	495	New(54,PL_savestack,64,ANY);
410	PL_savestack_ix = 0;	496	PL_savestack_ix = 0;
411	PL_savestack_max = 96;	497	PL_savestack_max = 64;
412		498
413	#if !PERL_VERSION_ATLEAST (5,9,0)	499	#if !PERL_VERSION_ATLEAST (5,9,0)
414	New(54,PL_retstack,8,OP*);	500	New(54,PL_retstack,4,OP*);
415	PL_retstack_ix = 0;	501	PL_retstack_ix = 0;
416	PL_retstack_max = 8;	502	PL_retstack_max = 4;
417	#endif	503	#endif
418	}	504	}
		505	#endif
419		506
420	/*	507	/*
421	* destroy the stacks, the callchain etc...	508	* destroy the stacks, the callchain etc...
422	*/	509	*/
423	static void	510	static void
424	coro_destroy_stacks ()	511	coro_destroy_stacks (pTHX)
425	{	512	{
426	if (!IN_DESTRUCT)	513	if (!IN_DESTRUCT)
427	{	514	{
428	/* is this ugly, I ask? */	515	/* restore all saved variables and stuff */
429	LEAVE_SCOPE (0);	516	LEAVE_SCOPE (0);
		517	assert (PL_tmps_floor == -1);
430		518
431	/* sure it is, but more important: is it correct?? :/ */	519	/* free all temporaries */
432	FREETMPS;	520	FREETMPS;
		521	assert (PL_tmps_ix == -1);
433		522
		523	/* unwind all extra stacks */
434	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	524	POPSTACK_TO (PL_mainstack);
		525
		526	/* unwind main stack */
		527	dounwind (-1);
435	}	528	}
436		529
437	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
438	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
439		532
440	while (PL_curstackinfo)	533	while (PL_curstackinfo)
441	{	534	{
442	PERL_SI *p = PL_curstackinfo->si_prev;	535	PERL_SI *p = PL_curstackinfo->si_prev;
443		536
444	{ /*D*//*remove*/
445	dSP;
446	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
447	PUTBACK; /* possibly superfluous */
448	}
449
450	if (!IN_DESTRUCT)	537	if (!IN_DESTRUCT)
451	{
452	dounwind (-1);/*D*//*remove*/
453	SvREFCNT_dec (PL_curstackinfo->si_stack);	538	SvREFCNT_dec (PL_curstackinfo->si_stack);
454	}
455		539
456	Safefree (PL_curstackinfo->si_cxstack);	540	Safefree (PL_curstackinfo->si_cxstack);
457	Safefree (PL_curstackinfo);	541	Safefree (PL_curstackinfo);
458	PL_curstackinfo = p;	542	PL_curstackinfo = p;
459	}	543	}
…		…
465	#if !PERL_VERSION_ATLEAST (5,9,0)	549	#if !PERL_VERSION_ATLEAST (5,9,0)
466	Safefree (PL_retstack);	550	Safefree (PL_retstack);
467	#endif	551	#endif
468	}	552	}
469		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
470	static void	587	static void
471	setup_coro (struct coro *coro)	588	setup_coro (pTHX_ struct coro *coro)
472	{	589	{
473	/*	590	/*
474	* emulate part of the perl startup here.	591	* emulate part of the perl startup here.
475	*/	592	*/
476
477	coro_init_stacks ();	593	coro_init_stacks (aTHX);
478		594
		595	PL_curcop = &PL_compiling;
		596	PL_in_eval = EVAL_NULL;
479	PL_curcop = 0;	597	PL_comppad = 0;
480	PL_in_eval = 0;
481	PL_curpm = 0;	598	PL_curpm = 0;
		599	PL_localizing = 0;
		600	PL_dirty = 0;
		601	PL_restartop = 0;
482		602
483	{	603	{
484	dSP;	604	dSP;
485	LOGOP myop;	605	LOGOP myop;
486		606
487	/* I have no idea why this is needed, but it is */
488	PUSHMARK (SP);
489
490	SvREFCNT_dec (GvAV (PL_defgv));	607	SvREFCNT_dec (GvAV (PL_defgv));
491	GvAV (PL_defgv) = coro->args; coro->args = 0;	608	GvAV (PL_defgv) = coro->args; coro->args = 0;
492		609
493	Zero (&myop, 1, LOGOP);	610	Zero (&myop, 1, LOGOP);
494	myop.op_next = Nullop;	611	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;	612	myop.op_flags = OPf_WANT_VOID;
496		613
		614	PUSHMARK (SP);
		615	XPUSHs (av_shift (GvAV (PL_defgv)));
		616	PUTBACK;
497	PL_op = (OP *)&myop;	617	PL_op = (OP *)&myop;
498
499	PUSHMARK (SP);
500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
501	PUTBACK;
502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	618	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503	SPAGAIN;	619	SPAGAIN;
504
505	ENTER; /* necessary e.g. for dounwind */
506	}	620	}
507	}
508		621
		622	ENTER; /* necessary e.g. for dounwind */
		623	}
		624
509	static void	625	static void
510	free_coro_mortal ()	626	free_coro_mortal (pTHX)
511	{	627	{
512	if (coro_mortal)	628	if (coro_mortal)
513	{	629	{
514	SvREFCNT_dec (coro_mortal);	630	SvREFCNT_dec (coro_mortal);
515	coro_mortal = 0;	631	coro_mortal = 0;
516	}	632	}
517	}	633	}
518		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 */
519	static void NOINLINE	679	static void NOINLINE
520	prepare_cctx (coro_cctx *cctx)	680	prepare_cctx (pTHX_ coro_cctx *cctx)
521	{	681	{
522	dSP;	682	dSP;
523	LOGOP myop;	683	LOGOP myop;
524		684
		685	PL_top_env = &PL_start_env;
		686
		687	if (cctx->flags & CC_TRACE)
		688	PL_runops = runops_coro;
		689
525	Zero (&myop, 1, LOGOP);	690	Zero (&myop, 1, LOGOP);
526	myop.op_next = PL_op;	691	myop.op_next = PL_op;
527	myop.op_flags = OPf_WANT_VOID;	692	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
528
529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530		693
531	PUSHMARK (SP);	694	PUSHMARK (SP);
		695	EXTEND (SP, 2);
		696	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	697	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533	PUTBACK;	698	PUTBACK;
		699	PL_op = (OP *)&myop;
534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	700	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	701	SPAGAIN;
536	}	702	}
537		703
		704	/*
		705	* this is a _very_ stripped down perl interpreter ;)
		706	*/
538	static void	707	static void
539	coro_run (void *arg)	708	coro_run (void *arg)
540	{	709	{
		710	dTHX;
		711
541	/* coro_run is the alternative epilogue of transfer() */	712	/* coro_run is the alternative tail of transfer(), so unlock here. */
542	UNLOCK;	713	UNLOCK;
543		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
544	/*	725	/*
545	* 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
546	*/	731	*/
547	PL_top_env = &PL_start_env;	732	PL_top_env = main_top_env;
548		733	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
549	/* inject call to cctx_init */
550	prepare_cctx ((coro_cctx *)arg);
551
552	/* somebody will hit me for both perl_run and PL_restartop */
553	perl_run (PL_curinterp);
554
555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
556	abort ();
557	}	734	}
558		735
559	static coro_cctx *	736	static coro_cctx *
560	cctx_new ()	737	cctx_new ()
561	{	738	{
562	coro_cctx *cctx;	739	coro_cctx *cctx;
		740	void *stack_start;
		741	size_t stack_size;
563		742
564	++cctx_count;	743	++cctx_count;
565		744
566	New (0, cctx, 1, coro_cctx);	745	Newz (0, cctx, 1, coro_cctx);
567		746
568	#if HAVE_MMAP	747	#if HAVE_MMAP
569		748
570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	749	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
571	/* mmap suppsedly does allocate-on-write for us */	750	/* mmap supposedly does allocate-on-write for us */
572	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);
573		752
574	if (cctx->sptr == (void *)-1)	753	if (cctx->sptr != (void *)-1)
575	{
576	perror ("FATAL: unable to mmap stack for coroutine");
577	_exit (EXIT_FAILURE);
578	}	754	{
579
580	# if STACKGUARD	755	# if CORO_STACKGUARD
581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	756	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
582	# 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);
583		767
584	#else
585
586	cctx->ssize = STACKSIZE * (long)sizeof (long);
587	New (0, cctx->sptr, STACKSIZE, long);
588
589	if (!cctx->sptr)	768	if (!cctx->sptr)
590	{	769	{
591	perror ("FATAL: unable to malloc stack for coroutine");	770	perror ("FATAL: unable to allocate stack for coroutine");
592	_exit (EXIT_FAILURE);	771	_exit (EXIT_FAILURE);
593	}	772	}
594		773
595	#endif	774	stack_start = cctx->sptr;
		775	stack_size = cctx->ssize;
		776	}
596		777
597	#if USE_VALGRIND	778	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
598	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
599	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
600	cctx->ssize + (char *)cctx->sptr
601	);
602	#endif
603
604	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);
605		780
606	return cctx;	781	return cctx;
607	}	782	}
608		783
609	static void	784	static void
610	cctx_free (coro_cctx *cctx)	785	cctx_destroy (coro_cctx *cctx)
611	{	786	{
612	if (!cctx)	787	if (!cctx)
613	return;	788	return;
614		789
615	--cctx_count;	790	--cctx_count;
616		791
617	#if USE_VALGRIND	792	#if CORO_USE_VALGRIND
618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	793	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
619	#endif	794	#endif
620		795
621	#if HAVE_MMAP	796	#if HAVE_MMAP
		797	if (cctx->flags & CC_MAPPED)
622	munmap (cctx->sptr, cctx->ssize);	798	munmap (cctx->sptr, cctx->ssize);
623	#else	799	else
		800	#endif
624	Safefree (cctx->sptr);	801	Safefree (cctx->sptr);
625	#endif
626		802
627	Safefree (cctx);	803	Safefree (cctx);
628	}	804	}
629		805
630	static coro_cctx *	806	static coro_cctx *
631	cctx_get ()	807	cctx_get (pTHX)
632	{	808	{
633	coro_cctx *cctx;
634
635	if (cctx_first)	809	while (cctx_first)
636	{	810	{
		811	coro_cctx *cctx = cctx_first;
		812	cctx_first = cctx->next;
637	--cctx_idle;	813	--cctx_idle;
638	cctx = cctx_first;	814
639	cctx_first = cctx->next;	815	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
640	}	816	return cctx;
641	else	817
642	{	818	cctx_destroy (cctx);
643	cctx = cctx_new ();
644	PL_op = PL_op->op_next;
645	}	819	}
646		820
647	return cctx;	821	return cctx_new ();
648	}	822	}
649		823
650	static void	824	static void
651	cctx_put (coro_cctx *cctx)	825	cctx_put (coro_cctx *cctx)
652	{	826	{
		827	/* free another cctx if overlimit */
		828	if (cctx_idle >= MAX_IDLE_CCTX)
		829	{
		830	coro_cctx *first = cctx_first;
		831	cctx_first = first->next;
		832	--cctx_idle;
		833
		834	cctx_destroy (first);
		835	}
		836
653	++cctx_idle;	837	++cctx_idle;
654	cctx->next = cctx_first;	838	cctx->next = cctx_first;
655	cctx_first = cctx;	839	cctx_first = cctx;
656	}	840	}
657		841
		842	/** coroutine switching *****************************************************/
		843
658	/* never call directly, always through the coro_state_transfer global variable */	844	/* never call directly, always through the coro_state_transfer global variable */
659	static void NOINLINE	845	static void NOINLINE
660	transfer (struct coro *prev, struct coro *next, int flags)	846	transfer (pTHX_ struct coro *prev, struct coro *next)
661	{	847	{
662	dSTACKLEVEL;	848	dSTACKLEVEL;
663		849
664	/* sometimes transfer is only called to set idle_sp */	850	/* sometimes transfer is only called to set idle_sp */
665	if (flags == TRANSFER_SET_STACKLEVEL)	851	if (!next)
		852	{
666	((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	}
667	else if (prev != next)	856	else if (prev != next)
668	{	857	{
669	coro_cctx *prev__cctx;	858	coro_cctx *prev__cctx;
670		859
		860	if (prev->flags & CF_NEW)
		861	{
		862	/* create a new empty context */
		863	Newz (0, prev->cctx, 1, coro_cctx);
		864	prev->flags &= ~CF_NEW;
		865	prev->flags |= CF_RUNNING;
		866	}
		867
		868	/*TODO: must not croak here */
		869	if (!prev->flags & CF_RUNNING)
		870	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		871
		872	if (next->flags & CF_RUNNING)
		873	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		874
		875	if (next->flags & CF_DESTROYED)
		876	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		877
		878	prev->flags &= ~CF_RUNNING;
		879	next->flags |= CF_RUNNING;
		880
671	LOCK;	881	LOCK;
672		882
673	if (next->mainstack)	883	if (next->flags & CF_NEW)
674	{	884	{
675	/* coroutine already started */	885	/* need to start coroutine */
676	SAVE (prev, flags);	886	next->flags &= ~CF_NEW;
677	LOAD (next);	887	/* first get rid of the old state */
		888	save_perl (aTHX_ prev);
		889	/* setup coroutine call */
		890	setup_coro (aTHX_ next);
678	}	891	}
679	else	892	else
680	{	893	{
681	/* need to start coroutine */	894	/* coroutine already started */
682	/* first get rid of the old state */	895	save_perl (aTHX_ prev);
683	SAVE (prev, -1);	896	load_perl (aTHX_ next);
684	/* setup coroutine call */
685	setup_coro (next);
686	/* need a stack */
687	next->cctx = 0;
688	}	897	}
689
690	if (!prev->cctx)
691	/* create a new empty context */
692	Newz (0, prev->cctx, 1, coro_cctx);
693		898
694	prev__cctx = prev->cctx;	899	prev__cctx = prev->cctx;
695		900
696	/* possibly "free" the cctx */	901	/* possibly "free" the cctx */
697	if (prev__cctx->idle_sp == STACKLEVEL)	902	if (prev__cctx->idle_sp == STACKLEVEL)
698	{	903	{
		904	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		905	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		906
		907	prev->cctx = 0;
		908
699	cctx_put (prev__cctx);	909	cctx_put (prev__cctx);
700	prev->cctx = 0;
701	}	910	}
702		911
703	if (!next->cctx)	912	if (!next->cctx)
704	next->cctx = cctx_get ();	913	next->cctx = cctx_get (aTHX);
705		914
706	if (prev__cctx != next->cctx)	915	if (prev__cctx != next->cctx)
707	{	916	{
708	prev__cctx->top_env = PL_top_env;	917	prev__cctx->top_env = PL_top_env;
709	PL_top_env = next->cctx->top_env;	918	PL_top_env = next->cctx->top_env;
710	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	919	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
711	}	920	}
712		921
713	free_coro_mortal ();	922	free_coro_mortal (aTHX);
714
715	UNLOCK;	923	UNLOCK;
716	}	924	}
717	}	925	}
718		926
719	struct transfer_args	927	struct transfer_args
720	{	928	{
721	struct coro *prev, *next;	929	struct coro *prev, *next;
722	int flags;
723	};	930	};
724		931
725	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	932	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
726		933
		934	/** high level stuff ********************************************************/
		935
727	static void	936	static int
728	coro_state_destroy (struct coro *coro)	937	coro_state_destroy (pTHX_ struct coro *coro)
729	{	938	{
730	if (coro->refcnt--)	939	if (coro->flags & CF_DESTROYED)
731	return;	940	return 0;
		941
		942	coro->flags |= CF_DESTROYED;
		943
		944	if (coro->flags & CF_READY)
		945	{
		946	/* reduce nready, as destroying a ready coro effectively unreadies it */
		947	/* alternative: look through all ready queues and remove the coro */
		948	LOCK;
		949	--coro_nready;
		950	UNLOCK;
		951	}
		952	else
		953	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
732		954
733	if (coro->mainstack && coro->mainstack != main_mainstack)	955	if (coro->mainstack && coro->mainstack != main_mainstack)
734	{	956	{
735	struct coro temp;	957	struct coro temp;
736		958
737	SAVE ((&temp), TRANSFER_SAVE_ALL);	959	assert (!(coro->flags & CF_RUNNING));
738	LOAD (coro);
739		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
740	coro_destroy_stacks ();	970	coro_destroy_stacks (aTHX);
741		971
742	LOAD ((&temp)); /* this will get rid of defsv etc.. */	972	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
743		973
744	coro->mainstack = 0;	974	coro->mainstack = 0;
745	}	975	}
746		976
747	cctx_free (coro->cctx);	977	cctx_destroy (coro->cctx);
748	SvREFCNT_dec (coro->args);	978	SvREFCNT_dec (coro->args);
749	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;
750	}	985	}
751		986
752	static int	987	static int
753	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	988	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
754	{	989	{
755	struct coro *coro = (struct coro *)mg->mg_ptr;	990	struct coro *coro = (struct coro *)mg->mg_ptr;
756	mg->mg_ptr = 0;	991	mg->mg_ptr = 0;
757		992
		993	coro->hv = 0;
		994
		995	if (--coro->refcnt < 0)
		996	{
758	coro_state_destroy (coro);	997	coro_state_destroy (aTHX_ coro);
		998	Safefree (coro);
		999	}
759		1000
760	return 0;	1001	return 0;
761	}	1002	}
762		1003
763	static int	1004	static int
…		…
770	return 0;	1011	return 0;
771	}	1012	}
772		1013
773	static MGVTBL coro_state_vtbl = {	1014	static MGVTBL coro_state_vtbl = {
774	0, 0, 0, 0,	1015	0, 0, 0, 0,
775	coro_state_clear,	1016	coro_state_free,
776	0,	1017	0,
777	#ifdef MGf_DUP	1018	#ifdef MGf_DUP
778	coro_state_dup,	1019	coro_state_dup,
779	#else	1020	#else
780	# define MGf_DUP 0	1021	# define MGf_DUP 0
781	#endif	1022	#endif
782	};	1023	};
783		1024
784	static struct coro *	1025	static struct coro *
785	SvSTATE (SV *coro)	1026	SvSTATE_ (pTHX_ SV *coro)
786	{	1027	{
787	HV *stash;	1028	HV *stash;
788	MAGIC *mg;	1029	MAGIC *mg;
789		1030
790	if (SvROK (coro))	1031	if (SvROK (coro))
…		…
796	/* very slow, but rare, check */	1037	/* very slow, but rare, check */
797	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1038	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
798	croak ("Coro::State object required");	1039	croak ("Coro::State object required");
799	}	1040	}
800		1041
801	mg = SvMAGIC (coro);	1042	mg = CORO_MAGIC (coro);
802	assert (mg->mg_type == PERL_MAGIC_ext);
803	return (struct coro *)mg->mg_ptr;	1043	return (struct coro *)mg->mg_ptr;
804	}	1044	}
805		1045
		1046	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1047
806	static void	1048	static void
807	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)
808	{	1050	{
809	ta->prev = SvSTATE (prev);	1051	ta->prev = SvSTATE (prev_sv);
810	ta->next = SvSTATE (next);	1052	ta->next = SvSTATE (next_sv);
811	ta->flags = flags;
812	}	1053	}
813		1054
814	static void	1055	static void
815	api_transfer (SV *prev, SV *next, int flags)	1056	api_transfer (SV *prev_sv, SV *next_sv)
816	{	1057	{
817	dTHX;	1058	dTHX;
818	struct transfer_args ta;	1059	struct transfer_args ta;
819		1060
820	prepare_transfer (&ta, prev, next, flags);	1061	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
821	TRANSFER (ta);	1062	TRANSFER (ta);
822	}	1063	}
823		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
824	/** Coro ********************************************************************/	1078	/** Coro ********************************************************************/
825		1079
826	#define PRIO_MAX 3
827	#define PRIO_HIGH 1
828	#define PRIO_NORMAL 0
829	#define PRIO_LOW -1
830	#define PRIO_IDLE -3
831	#define PRIO_MIN -4
832
833	/* for Coro.pm */
834	static GV *coro_current, *coro_idle;
835	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
836	static int coro_nready;
837
838	static void	1080	static void
839	coro_enq (SV *sv)	1081	coro_enq (pTHX_ SV *coro_sv)
840	{	1082	{
841	int prio;
842
843	if (SvTYPE (sv) != SVt_PVHV)
844	croak ("Coro::ready tried to enqueue something that is not a coroutine");
845
846	prio = SvSTATE (sv)->prio;
847
848	av_push (coro_ready [prio - PRIO_MIN], sv);	1083	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
849	coro_nready++;
850	}	1084	}
851		1085
852	static SV *	1086	static SV *
853	coro_deq (int min_prio)	1087	coro_deq (pTHX_ int min_prio)
854	{	1088	{
855	int prio = PRIO_MAX - PRIO_MIN;	1089	int prio = PRIO_MAX - PRIO_MIN;
856		1090
857	min_prio -= PRIO_MIN;	1091	min_prio -= PRIO_MIN;
858	if (min_prio < 0)	1092	if (min_prio < 0)
859	min_prio = 0;	1093	min_prio = 0;
860		1094
861	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1095	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
862	if (AvFILLp (coro_ready [prio]) >= 0)	1096	if (AvFILLp (coro_ready [prio]) >= 0)
863	{
864	coro_nready--;
865	return av_shift (coro_ready [prio]);	1097	return av_shift (coro_ready [prio]);
866	}
867		1098
868	return 0;	1099	return 0;
869	}	1100	}
870		1101
871	static void	1102	static int
872	api_ready (SV *coro)	1103	api_ready (SV *coro_sv)
873	{	1104	{
874	dTHX;	1105	dTHX;
		1106	struct coro *coro;
875		1107
876	if (SvROK (coro))	1108	if (SvROK (coro_sv))
877	coro = SvRV (coro);	1109	coro_sv = SvRV (coro_sv);
		1110
		1111	coro = SvSTATE (coro_sv);
		1112
		1113	if (coro->flags & CF_READY)
		1114	return 0;
		1115
		1116	coro->flags |= CF_READY;
878		1117
879	LOCK;	1118	LOCK;
880	coro_enq (SvREFCNT_inc (coro));	1119	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1120	++coro_nready;
881	UNLOCK;	1121	UNLOCK;
882	}
883		1122
		1123	return 1;
		1124	}
		1125
884	static void	1126	static int
		1127	api_is_ready (SV *coro_sv)
		1128	{
		1129	dTHX;
		1130	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1131	}
		1132
		1133	static void
885	prepare_schedule (struct transfer_args *ta)	1134	prepare_schedule (pTHX_ struct transfer_args *ta)
886	{	1135	{
887	SV *current, *prev, *next;	1136	SV *prev_sv, *next_sv;
888
889	current = GvSV (coro_current);
890		1137
891	for (;;)	1138	for (;;)
892	{	1139	{
893	LOCK;	1140	LOCK;
894	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;
895	UNLOCK;	1173	UNLOCK;
896
897	if (next)
898	break;	1174	break;
899
900	{
901	dSP;
902
903	ENTER;
904	SAVETMPS;
905
906	PUSHMARK (SP);
907	PUTBACK;
908	call_sv (GvSV (coro_idle), G_DISCARD);
909
910	FREETMPS;
911	LEAVE;
912	}	1175	}
913	}
914
915	prev = SvRV (current);
916	SvRV (current) = next;
917		1176
918	/* 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
919	LOCK;	1185	LOCK;
920	free_coro_mortal ();	1186	free_coro_mortal (aTHX);
		1187	coro_mortal = prev_sv;
921	UNLOCK;	1188	UNLOCK;
922	coro_mortal = prev;
923
924	ta->prev = SvSTATE (prev);
925	ta->next = SvSTATE (next);
926	ta->flags = TRANSFER_SAVE_ALL;
927	}	1189	}
928		1190
929	static void	1191	static void
930	prepare_cede (struct transfer_args *ta)	1192	prepare_cede (pTHX_ struct transfer_args *ta)
931	{	1193	{
932	LOCK;	1194	api_ready (coro_current);
933	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
934	UNLOCK;
935
936	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;
937	}	1210	}
938		1211
939	static void	1212	static void
940	api_schedule (void)	1213	api_schedule (void)
941	{	1214	{
942	dTHX;	1215	dTHX;
943	struct transfer_args ta;	1216	struct transfer_args ta;
944		1217
945	prepare_schedule (&ta);	1218	prepare_schedule (aTHX_ &ta);
946	TRANSFER (ta);	1219	TRANSFER (ta);
947	}	1220	}
948		1221
949	static void	1222	static int
950	api_cede (void)	1223	api_cede (void)
951	{	1224	{
952	dTHX;	1225	dTHX;
953	struct transfer_args ta;	1226	struct transfer_args ta;
954		1227
955	prepare_cede (&ta);	1228	prepare_cede (aTHX_ &ta);
		1229
		1230	if (ta.prev != ta.next)
		1231	{
956	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;
957	}	1252	}
958		1253
959	MODULE = Coro::State PACKAGE = Coro::State	1254	MODULE = Coro::State PACKAGE = Coro::State
960		1255
961	PROTOTYPES: DISABLE	1256	PROTOTYPES: DISABLE
…		…
967	#endif	1262	#endif
968	BOOT_PAGESIZE;	1263	BOOT_PAGESIZE;
969		1264
970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1265	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
971		1266
972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1267	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1268	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
974	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));
975		1274
976	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;
977		1280
978	coroapi.ver = CORO_API_VERSION;	1281	coroapi.ver = CORO_API_VERSION;
979	coroapi.transfer = api_transfer;	1282	coroapi.transfer = api_transfer;
980		1283
981	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1284	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
989	HV *hv;	1292	HV *hv;
990	int i;	1293	int i;
991		1294
992	Newz (0, coro, 1, struct coro);	1295	Newz (0, coro, 1, struct coro);
993	coro->args = newAV ();	1296	coro->args = newAV ();
		1297	coro->save = CORO_SAVE_DEF;
		1298	coro->flags = CF_NEW;
994		1299
		1300	if (coro_first) coro_first->prev = coro;
		1301	coro->next = coro_first;
		1302	coro_first = coro;
		1303
995	hv = newHV ();	1304	coro->hv = hv = newHV ();
996	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;
997	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1306	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
998		1307
999	for (i = 1; i < items; i++)	1308	for (i = 1; i < items; i++)
1000	av_push (coro->args, newSVsv (ST (i)));	1309	av_push (coro->args, newSVsv (ST (i)));
1001	}	1310	}
1002	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:
1003	RETVAL	1330	RETVAL
1004		1331
1005	void	1332	void
1006	_set_stacklevel (...)	1333	_set_stacklevel (...)
1007	ALIAS:	1334	ALIAS:
1008	Coro::State::transfer = 1	1335	Coro::State::transfer = 1
1009	Coro::schedule = 2	1336	Coro::schedule = 2
1010	Coro::cede = 3	1337	Coro::cede = 3
1011	Coro::Cont::yield = 4	1338	Coro::cede_notself = 4
1012	CODE:	1339	CODE:
1013	{	1340	{
1014	struct transfer_args ta;	1341	struct transfer_args ta;
1015		1342
1016	switch (ix)	1343	switch (ix)
1017	{	1344	{
1018	case 0:	1345	case 0:
1019	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1346	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1020	ta.next = 0;	1347	ta.next = 0;
1021	ta.flags = TRANSFER_SET_STACKLEVEL;
1022	break;	1348	break;
1023		1349
1024	case 1:	1350	case 1:
1025	if (items != 3)	1351	if (items != 2)
1026	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);
1027		1353
1028	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1354	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1029	break;	1355	break;
1030		1356
1031	case 2:	1357	case 2:
1032	prepare_schedule (&ta);	1358	prepare_schedule (aTHX_ &ta);
1033	break;	1359	break;
1034		1360
1035	case 3:	1361	case 3:
1036	prepare_cede (&ta);	1362	prepare_cede (aTHX_ &ta);
1037	break;	1363	break;
1038		1364
1039	case 4:	1365	case 4:
1040	{	1366	if (!prepare_cede_notself (aTHX_ &ta))
1041	SV *yieldstack;	1367	XSRETURN_EMPTY;
1042	SV *sv;
1043	AV *defav = GvAV (PL_defgv);
1044		1368
1045	yieldstack = *hv_fetch (
1046	(HV *)SvRV (GvSV (coro_current)),
1047	"yieldstack", sizeof ("yieldstack") - 1,
1048	0
1049	);
1050
1051	/* set up @_ -- ugly */
1052	av_clear (defav);
1053	av_fill (defav, items - 1);
1054	while (items--)
1055	av_store (defav, items, SvREFCNT_inc (ST(items)));
1056
1057	sv = av_pop ((AV *)SvRV (yieldstack));
1058	ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1059	ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1060	ta.flags = 0;
1061	SvREFCNT_dec (sv);
1062	}
1063	break;	1369	break;
1064
1065	}	1370	}
1066		1371
		1372	BARRIER;
1067	TRANSFER (ta);	1373	TRANSFER (ta);
1068	}
1069		1374
1070	void	1375	if (GIMME_V != G_VOID && ta.next != ta.prev)
1071	_clone_state_from (SV *dst, SV *src)	1376	XSRETURN_YES;
		1377	}
		1378
		1379	bool
		1380	_destroy (SV *coro_sv)
1072	CODE:	1381	CODE:
1073	{	1382	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1074	struct coro *coro_src = SvSTATE (src);	1383	OUTPUT:
1075		1384	RETVAL
1076	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1077
1078	++coro_src->refcnt;
1079	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1080	}
1081		1385
1082	void	1386	void
1083	_exit (code)	1387	_exit (code)
1084	int code	1388	int code
1085	PROTOTYPE: $	1389	PROTOTYPE: $
1086	CODE:	1390	CODE:
1087	_exit (code);	1391	_exit (code);
1088		1392
1089	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
1090	cctx_count ()	1403	cctx_count ()
1091	CODE:	1404	CODE:
1092	RETVAL = cctx_count;	1405	RETVAL = cctx_count;
1093	OUTPUT:	1406	OUTPUT:
1094	RETVAL	1407	RETVAL
…		…
1098	CODE:	1411	CODE:
1099	RETVAL = cctx_idle;	1412	RETVAL = cctx_idle;
1100	OUTPUT:	1413	OUTPUT:
1101	RETVAL	1414	RETVAL
1102		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
1103	MODULE = Coro::State PACKAGE = Coro	1522	MODULE = Coro::State PACKAGE = Coro
1104		1523
1105	BOOT:	1524	BOOT:
1106	{	1525	{
1107	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);
1108		1534
1109	coro_stash = gv_stashpv ("Coro", TRUE);	1535	coro_stash = gv_stashpv ("Coro", TRUE);
1110		1536
1111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1537	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1112	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1538	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1539	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1540	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1115	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1541	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1116	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1542	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1117		1543
1118	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1119	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1120
1121	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1544	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1122	coro_ready[i] = newAV ();	1545	coro_ready[i] = newAV ();
1123		1546
1124	{	1547	{
1125	SV *sv = perl_get_sv("Coro::API", 1);	1548	SV *sv = perl_get_sv("Coro::API", 1);
1126		1549
1127	coroapi.schedule = api_schedule;	1550	coroapi.schedule = api_schedule;
		1551	coroapi.save = api_save;
1128	coroapi.cede = api_cede;	1552	coroapi.cede = api_cede;
		1553	coroapi.cede_notself = api_cede_notself;
1129	coroapi.ready = api_ready;	1554	coroapi.ready = api_ready;
		1555	coroapi.is_ready = api_is_ready;
1130	coroapi.nready = &coro_nready;	1556	coroapi.nready = &coro_nready;
1131	coroapi.current = coro_current;	1557	coroapi.current = coro_current;
1132		1558
1133	GCoroAPI = &coroapi;	1559	GCoroAPI = &coroapi;
1134	sv_setiv (sv, (IV)&coroapi);	1560	sv_setiv (sv, (IV)&coroapi);
1135	SvREADONLY_on (sv);	1561	SvREADONLY_on (sv);
1136	}	1562	}
1137	}	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)));
1138		1571
1139	int	1572	int
1140	prio (Coro::State coro, int newprio = 0)	1573	prio (Coro::State coro, int newprio = 0)
1141	ALIAS:	1574	ALIAS:
1142	nice = 1	1575	nice = 1
…		…
1145	RETVAL = coro->prio;	1578	RETVAL = coro->prio;
1146		1579
1147	if (items > 1)	1580	if (items > 1)
1148	{	1581	{
1149	if (ix)	1582	if (ix)
1150	newprio += coro->prio;	1583	newprio = coro->prio - newprio;
1151		1584
1152	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1585	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1153	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1586	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1154		1587
1155	coro->prio = newprio;	1588	coro->prio = newprio;
1156	}	1589	}
1157	}	1590	}
		1591	OUTPUT:
		1592	RETVAL
1158		1593
1159	void	1594	SV *
1160	ready (SV *self)	1595	ready (SV *self)
1161	PROTOTYPE: $	1596	PROTOTYPE: $
1162	CODE:	1597	CODE:
1163	api_ready (self);	1598	RETVAL = boolSV (api_ready (self));
		1599	OUTPUT:
		1600	RETVAL
1164		1601
1165	int	1602	int
1166	nready (...)	1603	nready (...)
1167	PROTOTYPE:	1604	PROTOTYPE:
1168	CODE:	1605	CODE:
1169	RETVAL = coro_nready;	1606	RETVAL = coro_nready;
1170	OUTPUT:	1607	OUTPUT:
1171	RETVAL	1608	RETVAL
1172		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
1173	MODULE = Coro::State PACKAGE = Coro::AIO	1663	MODULE = Coro::State PACKAGE = Coro::AIO
1174		1664
1175	SV *	1665	SV *
1176	_get_state ()	1666	_get_state ()
1177	CODE:	1667	CODE:
1178	{	1668	{
1179	struct {	1669	struct io_state *data;
1180	int errorno;
1181	int laststype;
1182	int laststatval;
1183	Stat_t statcache;
1184	} data;
1185		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
1186	data.errorno = errno;	1676	data->errorno = errno;
1187	data.laststype = PL_laststype;	1677	data->laststype = PL_laststype;
1188	data.laststatval = PL_laststatval;	1678	data->laststatval = PL_laststatval;
1189	data.statcache = PL_statcache;	1679	data->statcache = PL_statcache;
1190
1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
1192	}	1680	}
1193	OUTPUT:	1681	OUTPUT:
1194	RETVAL	1682	RETVAL
1195		1683
1196	void	1684	void
1197	_set_state (char *data_)	1685	_set_state (char *data_)
1198	PROTOTYPE: $	1686	PROTOTYPE: $
1199	CODE:	1687	CODE:
1200	{	1688	{
1201	struct {	1689	struct io_state *data = (void *)data_;
1202	int errorno;
1203	int laststype;
1204	int laststatval;
1205	Stat_t statcache;
1206	} *data = (void *)data_;
1207		1690
1208	errno = data->errorno;	1691	errno = data->errorno;
1209	PL_laststype = data->laststype;	1692	PL_laststype = data->laststype;
1210	PL_laststatval = data->laststatval;	1693	PL_laststatval = data->laststatval;
1211	PL_statcache = data->statcache;	1694	PL_statcache = data->statcache;
1212	}	1695	}
		1696

Diff Legend

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