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Comparing Coro/Coro/State.xs (file contents):
Revision 1.128 by root, Fri Dec 22 04:22:28 2006 UTC vs.
Revision 1.165 by root, Wed Sep 26 19:26:48 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
…		…
31	#else	33	#else
32	# define PAGESIZE 0	34	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
34	#endif	36	#endif
35		37
36	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
38	#endif	43	#endif
39		44
40	/* the maximum number of idle cctx that will be pooled */	45	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	46	#define MAX_IDLE_CCTX 8
42		47
…		…
71	#ifndef SvRV_set	76	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	78	#endif
74		79
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	81	# undef CORO_STACKGUARD
77	#endif	82	#endif
78		83
79	#ifndef STACKGUARD	84	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	85	# define CORO_STACKGUARD 0
81	#endif	86	#endif
82		87
83	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	90	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	91	#endif
87		92
88	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macros try to return the current stack pointer, in an as
89	* to the current C stack pointer. Its property is that it changes with each call	94	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
93		97
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		99
96	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
97	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
98	#else	103	#else
99	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
100	#endif	106	#endif
101		107
102	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
103		109
104	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
110	#else	116	#else
111	# define LOCK (void)0	117	# define LOCK (void)0
112	# define UNLOCK (void)0	118	# define UNLOCK (void)0
113	#endif	119	#endif
114		120
		121	/* helper storage struct for Coro::AIO */
115	struct io_state	122	struct io_state
116	{	123	{
117	int errorno;	124	int errorno;
118	I32 laststype;	125	I32 laststype;
119	int laststatval;	126	int laststatval;
120	Stat_t statcache;	127	Stat_t statcache;
121	};	128	};
122		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
123	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
124	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;
125	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
126	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
127		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
128	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
129	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	};
130		150
131	/* this is a structure representing a c-level coroutine */	151	/* this is a structure representing a c-level coroutine */
132	typedef struct coro_cctx {	152	typedef struct coro_cctx {
133	struct coro_cctx *next;	153	struct coro_cctx *next;
134		154
135	/* the stack */	155	/* the stack */
136	void *sptr;	156	void *sptr;
137	long ssize; /* positive == mmap, otherwise malloc */	157	size_t ssize;
138		158
139	/* cpu state */	159	/* cpu state */
140	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 */
141	JMPENV *top_env;	162	JMPENV *top_env;
142	coro_context cctx;	163	coro_context cctx;
143		164
144	int inuse;
145
146	#if USE_VALGRIND	165	#if CORO_USE_VALGRIND
147	int valgrind_id;	166	int valgrind_id;
148	#endif	167	#endif
		168	unsigned char flags;
149	} coro_cctx;	169	} coro_cctx;
150		170
151	enum {	171	enum {
152	CF_RUNNING = 0x0001, /* coroutine is running */	172	CF_RUNNING = 0x0001, /* coroutine is running */
153	CF_READY = 0x0002, /* coroutine is ready */	173	CF_READY = 0x0002, /* coroutine is ready */
154	CF_NEW = 0x0004, /* ahs never been switched to */	174	CF_NEW = 0x0004, /* has never been switched to */
		175	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
155	};	176	};
156		177
157	/* this is a structure representing a perl-level coroutine */	178	/* this is a structure representing a perl-level coroutine */
158	struct coro {	179	struct coro {
159	/* the c coroutine allocated to this perl coroutine, if any */	180	/* the c coroutine allocated to this perl coroutine, if any */
…		…
167		188
168	/* optionally saved, might be zero */	189	/* optionally saved, might be zero */
169	AV *defav; /* @_ */	190	AV *defav; /* @_ */
170	SV *defsv; /* $_ */	191	SV *defsv; /* $_ */
171	SV *errsv; /* $@ */	192	SV *errsv; /* $@ */
		193	GV *deffh; /* default filehandle */
172	SV *irssv; /* $/ */	194	SV *irssv; /* $/ */
173	SV *irssv_sv; /* real $/ cache */	195	SV *irssv_sv; /* real $/ cache */
174		196
175	#define VAR(name,type) type name;	197	#define VAR(name,type) type name;
176	# include "state.h"	198	# include "state.h"
177	#undef VAR	199	#undef VAR
178		200
179	/* coro process data */	201	/* coro process data */
180	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 */
181	};	207	};
182		208
183	typedef struct coro *Coro__State;	209	typedef struct coro *Coro__State;
184	typedef struct coro *Coro__State_or_hashref;	210	typedef struct coro *Coro__State_or_hashref;
185		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
186	static AV *	229	static AV *
187	coro_clone_padlist (CV *cv)	230	coro_clone_padlist (pTHX_ CV *cv)
188	{	231	{
189	AV *padlist = CvPADLIST (cv);	232	AV *padlist = CvPADLIST (cv);
190	AV *newpadlist, *newpad;	233	AV *newpadlist, *newpad;
191		234
192	newpadlist = newAV ();	235	newpadlist = newAV ();
…		…
204		247
205	return newpadlist;	248	return newpadlist;
206	}	249	}
207		250
208	static void	251	static void
209	free_padlist (AV *padlist)	252	free_padlist (pTHX_ AV *padlist)
210	{	253	{
211	/* may be during global destruction */	254	/* may be during global destruction */
212	if (SvREFCNT (padlist))	255	if (SvREFCNT (padlist))
213	{	256	{
214	I32 i = AvFILLp (padlist);	257	I32 i = AvFILLp (padlist);
…		…
235	AV *padlist;	278	AV *padlist;
236	AV *av = (AV *)mg->mg_obj;	279	AV *av = (AV *)mg->mg_obj;
237		280
238	/* casting is fun. */	281	/* casting is fun. */
239	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	282	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
240	free_padlist (padlist);	283	free_padlist (aTHX_ padlist);
241		284
242	SvREFCNT_dec (av);	285	SvREFCNT_dec (av);
243		286
244	return 0;	287	return 0;
245	}	288	}
…		…
255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	298	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
256	: 0	299	: 0
257		300
258	/* the next two functions merely cache the padlists */	301	/* the next two functions merely cache the padlists */
259	static void	302	static void
260	get_padlist (CV *cv)	303	get_padlist (pTHX_ CV *cv)
261	{	304	{
262	MAGIC *mg = CORO_MAGIC (cv);	305	MAGIC *mg = CORO_MAGIC (cv);
263	AV *av;	306	AV *av;
264		307
265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	308	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	309	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
267	else	310	else
268	{	311	{
269	#if PREFER_PERL_FUNCTIONS	312	#if CORO_PREFER_PERL_FUNCTIONS
270	/* this is probably cleaner, but also slower? */	313	/* this is probably cleaner, but also slower? */
271	CV *cp = Perl_cv_clone (cv);	314	CV *cp = Perl_cv_clone (cv);
272	CvPADLIST (cv) = CvPADLIST (cp);	315	CvPADLIST (cv) = CvPADLIST (cp);
273	CvPADLIST (cp) = 0;	316	CvPADLIST (cp) = 0;
274	SvREFCNT_dec (cp);	317	SvREFCNT_dec (cp);
275	#else	318	#else
276	CvPADLIST (cv) = coro_clone_padlist (cv);	319	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
277	#endif	320	#endif
278	}	321	}
279	}	322	}
280		323
281	static void	324	static void
282	put_padlist (CV *cv)	325	put_padlist (pTHX_ CV *cv)
283	{	326	{
284	MAGIC *mg = CORO_MAGIC (cv);	327	MAGIC *mg = CORO_MAGIC (cv);
285	AV *av;	328	AV *av;
286		329
287	if (!mg)	330	if (!mg)
…		…
298	av_extend (av, AvMAX (av) + 1);	341	av_extend (av, AvMAX (av) + 1);
299		342
300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	343	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
301	}	344	}
302		345
		346	/** load & save, init *******************************************************/
		347
303	#define SB do {	348	#define SB do {
304	#define SE } while (0)	349	#define SE } while (0)
305		350
306	#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
307		352
308	static void	353	static void
309	load_perl (Coro__State c)	354	load_perl (pTHX_ Coro__State c)
310	{	355	{
311	#define VAR(name,type) PL_ ## name = c->name;	356	#define VAR(name,type) PL_ ## name = c->name;
312	# include "state.h"	357	# include "state.h"
313	#undef VAR	358	#undef VAR
314		359
315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
317	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
318	if (c->irssv)	365	if (c->irssv)
319	{	366	{
320	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	367	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		368	{
321	SvREFCNT_dec (c->irssv);	369	SvREFCNT_dec (c->irssv);
		370	c->irssv = 0;
		371	}
322	else	372	else
323	{	373	{
324	REPLACE_SV (PL_rs, c->irssv);	374	REPLACE_SV (PL_rs, c->irssv);
325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	375	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
326	sv_setsv (c->irssv_sv, PL_rs);	376	sv_setsv (c->irssv_sv, PL_rs);
…		…
332	CV *cv;	382	CV *cv;
333		383
334	/* now do the ugly restore mess */	384	/* now do the ugly restore mess */
335	while ((cv = (CV *)POPs))	385	while ((cv = (CV *)POPs))
336	{	386	{
337	put_padlist (cv); /* mark this padlist as available */	387	put_padlist (aTHX_ cv); /* mark this padlist as available */
338	CvDEPTH (cv) = PTR2IV (POPs);	388	CvDEPTH (cv) = PTR2IV (POPs);
339	CvPADLIST (cv) = (AV *)POPs;	389	CvPADLIST (cv) = (AV *)POPs;
340	}	390	}
341		391
342	PUTBACK;	392	PUTBACK;
343	}	393	}
344	}	394	}
345		395
346	static void	396	static void
347	save_perl (Coro__State c)	397	save_perl (pTHX_ Coro__State c)
348	{	398	{
349	{	399	{
350	dSP;	400	dSP;
351	I32 cxix = cxstack_ix;	401	I32 cxix = cxstack_ix;
352	PERL_CONTEXT *ccstk = cxstack;	402	PERL_CONTEXT *ccstk = cxstack;
…		…
355	/*	405	/*
356	* 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
357	* (and reinitialize) all cv's in the whole callchain :(	407	* (and reinitialize) all cv's in the whole callchain :(
358	*/	408	*/
359		409
360	EXTEND (SP, 3 + 1);
361	PUSHs (Nullsv);	410	XPUSHs (Nullsv);
362	/* this loop was inspired by pp_caller */	411	/* this loop was inspired by pp_caller */
363	for (;;)	412	for (;;)
364	{	413	{
365	while (cxix >= 0)	414	while (cxix >= 0)
366	{	415	{
367	PERL_CONTEXT *cx = &ccstk[cxix--];	416	PERL_CONTEXT *cx = &ccstk[cxix--];
368		417
369	if (CxTYPE (cx) == CXt_SUB)	418	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
370	{	419	{
371	CV *cv = cx->blk_sub.cv;	420	CV *cv = cx->blk_sub.cv;
372		421
373	if (CvDEPTH (cv))	422	if (CvDEPTH (cv))
374	{	423	{
…		…
376	PUSHs ((SV *)CvPADLIST (cv));	425	PUSHs ((SV *)CvPADLIST (cv));
377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	426	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
378	PUSHs ((SV *)cv);	427	PUSHs ((SV *)cv);
379		428
380	CvDEPTH (cv) = 0;	429	CvDEPTH (cv) = 0;
381	get_padlist (cv);	430	get_padlist (aTHX_ cv);
382	}	431	}
383	}	432	}
384	}	433	}
385		434
386	if (top_si->si_type == PERLSI_MAIN)	435	if (top_si->si_type == PERLSI_MAIN)
387	break;	436	break;
388		437
389	top_si = top_si->si_prev;	438	top_si = top_si->si_prev;
390	ccstk = top_si->si_cxstack;	439	ccstk = top_si->si_cxstack;
391	cxix = top_si->si_cxix;	440	cxix = top_si->si_cxix;
392	}	441	}
393		442
394	PUTBACK;	443	PUTBACK;
395	}	444	}
396		445
397	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	446	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	447	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
399	c->errsv = c->save & CORO_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;
400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	450	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
401		451
402	#define VAR(name,type)c->name = PL_ ## name;	452	#define VAR(name,type)c->name = PL_ ## name;
403	# include "state.h"	453	# include "state.h"
404	#undef VAR	454	#undef VAR
…		…
408	* allocate various perl stacks. This is an exact copy	458	* allocate various perl stacks. This is an exact copy
409	* of perl.c:init_stacks, except that it uses less memory	459	* of perl.c:init_stacks, except that it uses less memory
410	* on the (sometimes correct) assumption that coroutines do	460	* on the (sometimes correct) assumption that coroutines do
411	* not usually need a lot of stackspace.	461	* not usually need a lot of stackspace.
412	*/	462	*/
413	#if PREFER_PERL_FUNCTIONS	463	#if CORO_PREFER_PERL_FUNCTIONS
414	# define coro_init_stacks init_stacks	464	# define coro_init_stacks init_stacks
415	#else	465	#else
416	static void	466	static void
417	coro_init_stacks ()	467	coro_init_stacks (pTHX)
418	{	468	{
419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	469	PL_curstackinfo = new_stackinfo(64, 6);
420	PL_curstackinfo->si_type = PERLSI_MAIN;	470	PL_curstackinfo->si_type = PERLSI_MAIN;
421	PL_curstack = PL_curstackinfo->si_stack;	471	PL_curstack = PL_curstackinfo->si_stack;
422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
423		473
424	PL_stack_base = AvARRAY(PL_curstack);	474	PL_stack_base = AvARRAY(PL_curstack);
425	PL_stack_sp = PL_stack_base;	475	PL_stack_sp = PL_stack_base;
426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
427		477
428	New(50,PL_tmps_stack,128,SV*);	478	New(50,PL_tmps_stack,64,SV*);
429	PL_tmps_floor = -1;	479	PL_tmps_floor = -1;
430	PL_tmps_ix = -1;	480	PL_tmps_ix = -1;
431	PL_tmps_max = 128;	481	PL_tmps_max = 64;
432		482
433	New(54,PL_markstack,32,I32);	483	New(54,PL_markstack,16,I32);
434	PL_markstack_ptr = PL_markstack;	484	PL_markstack_ptr = PL_markstack;
435	PL_markstack_max = PL_markstack + 32;	485	PL_markstack_max = PL_markstack + 16;
436		486
437	#ifdef SET_MARK_OFFSET	487	#ifdef SET_MARK_OFFSET
438	SET_MARK_OFFSET;	488	SET_MARK_OFFSET;
439	#endif	489	#endif
440		490
441	New(54,PL_scopestack,32,I32);	491	New(54,PL_scopestack,16,I32);
442	PL_scopestack_ix = 0;	492	PL_scopestack_ix = 0;
443	PL_scopestack_max = 32;	493	PL_scopestack_max = 16;
444		494
445	New(54,PL_savestack,64,ANY);	495	New(54,PL_savestack,64,ANY);
446	PL_savestack_ix = 0;	496	PL_savestack_ix = 0;
447	PL_savestack_max = 64;	497	PL_savestack_max = 64;
448		498
449	#if !PERL_VERSION_ATLEAST (5,9,0)	499	#if !PERL_VERSION_ATLEAST (5,9,0)
450	New(54,PL_retstack,16,OP*);	500	New(54,PL_retstack,4,OP*);
451	PL_retstack_ix = 0;	501	PL_retstack_ix = 0;
452	PL_retstack_max = 16;	502	PL_retstack_max = 4;
453	#endif	503	#endif
454	}	504	}
455	#endif	505	#endif
456		506
457	/*	507	/*
458	* destroy the stacks, the callchain etc...	508	* destroy the stacks, the callchain etc...
459	*/	509	*/
460	static void	510	static void
461	coro_destroy_stacks ()	511	coro_destroy_stacks (pTHX)
462	{	512	{
463	if (!IN_DESTRUCT)	513	if (!IN_DESTRUCT)
464	{	514	{
465	/* restore all saved variables and stuff */	515	/* restore all saved variables and stuff */
466	LEAVE_SCOPE (0);	516	LEAVE_SCOPE (0);
…		…
468		518
469	/* free all temporaries */	519	/* free all temporaries */
470	FREETMPS;	520	FREETMPS;
471	assert (PL_tmps_ix == -1);	521	assert (PL_tmps_ix == -1);
472		522
		523	/* unwind all extra stacks */
473	POPSTACK_TO (PL_mainstack);	524	POPSTACK_TO (PL_mainstack);
		525
		526	/* unwind main stack */
		527	dounwind (-1);
474	}	528	}
475		529
476	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
477	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
478		532
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	549	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	550	Safefree (PL_retstack);
497	#endif	551	#endif
498	}	552	}
499		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
500	static void	587	static void
501	setup_coro (struct coro *coro)	588	setup_coro (pTHX_ struct coro *coro)
502	{	589	{
503	/*	590	/*
504	* emulate part of the perl startup here.	591	* emulate part of the perl startup here.
505	*/	592	*/
506
507	coro_init_stacks ();	593	coro_init_stacks (aTHX);
508		594
509	PL_curcop = &PL_compiling;	595	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	596	PL_in_eval = EVAL_NULL;
		597	PL_comppad = 0;
511	PL_curpm = 0;	598	PL_curpm = 0;
512	PL_localizing = 0;	599	PL_localizing = 0;
513	PL_dirty = 0;	600	PL_dirty = 0;
514	PL_restartop = 0;	601	PL_restartop = 0;
515		602
…		…
523	Zero (&myop, 1, LOGOP);	610	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	611	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	612	myop.op_flags = OPf_WANT_VOID;
526		613
527	PUSHMARK (SP);	614	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	615	XPUSHs (av_shift (GvAV (PL_defgv)));
529	PUTBACK;	616	PUTBACK;
530	PL_op = (OP *)&myop;	617	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	618	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	619	SPAGAIN;
533	}	620	}
534		621
535	ENTER; /* necessary e.g. for dounwind */	622	ENTER; /* necessary e.g. for dounwind */
536	}	623	}
537		624
538	static void	625	static void
539	free_coro_mortal ()	626	free_coro_mortal (pTHX)
540	{	627	{
541	if (coro_mortal)	628	if (coro_mortal)
542	{	629	{
543	SvREFCNT_dec (coro_mortal);	630	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	631	coro_mortal = 0;
545	}	632	}
546	}	633	}
547		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
548	/* inject a fake call to Coro::State::_cctx_init into the execution */	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 */
549	static void NOINLINE	679	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	680	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	681	{
552	dSP;	682	dSP;
553	LOGOP myop;	683	LOGOP myop;
		684
		685	PL_top_env = &PL_start_env;
		686
		687	if (cctx->flags & CC_TRACE)
		688	PL_runops = runops_coro;
554		689
555	Zero (&myop, 1, LOGOP);	690	Zero (&myop, 1, LOGOP);
556	myop.op_next = PL_op;	691	myop.op_next = PL_op;
557	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	692	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
558		693
…		…
564	PL_op = (OP *)&myop;	699	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	700	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	701	SPAGAIN;
567	}	702	}
568		703
		704	/*
		705	* this is a _very_ stripped down perl interpreter ;)
		706	*/
569	static void	707	static void
570	coro_run (void *arg)	708	coro_run (void *arg)
571	{	709	{
		710	dTHX;
		711
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	712	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	713	UNLOCK;
574		714
575	/*	715	/* we now skip the entersub that lead to transfer() */
576	* this is a _very_ stripped down perl interpreter ;)	716	PL_op = PL_op->op_next;
577	*/
578	PL_top_env = &PL_start_env;
579		717
580	/* inject call to cctx_init */	718	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	719	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		720
583	/* somebody will hit me for both perl_run and PL_restartop */	721	/* somebody or something will hit me for both perl_run and PL_restartop */
584	PL_restartop = PL_op;	722	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	723	perl_run (PL_curinterp);
586		724
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	725	/*
588	abort ();	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
		731	*/
		732	PL_top_env = main_top_env;
		733	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
589	}	734	}
590		735
591	static coro_cctx *	736	static coro_cctx *
592	cctx_new ()	737	cctx_new ()
593	{	738	{
594	coro_cctx *cctx;	739	coro_cctx *cctx;
		740	void *stack_start;
		741	size_t stack_size;
595		742
596	++cctx_count;	743	++cctx_count;
597		744
598	Newz (0, cctx, 1, coro_cctx);	745	Newz (0, cctx, 1, coro_cctx);
599		746
600	#if HAVE_MMAP	747	#if HAVE_MMAP
601		748
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	749	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	750	/* mmap supposedly does allocate-on-write for us */
604	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);
605		752
606	if (cctx->sptr == (void *)-1)	753	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	754	{
611
612	# if STACKGUARD	755	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	756	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# 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);
615		767
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	768	if (!cctx->sptr)
622	{	769	{
623	perror ("FATAL: unable to malloc stack for coroutine");	770	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	771	_exit (EXIT_FAILURE);
625	}	772	}
626		773
627	#endif	774	stack_start = cctx->sptr;
		775	stack_size = cctx->ssize;
		776	}
628		777
629	#if USE_VALGRIND	778	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
632	cctx->ssize + (char *)cctx->sptr
633	);
634	#endif
635
636	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);
637		780
638	return cctx;	781	return cctx;
639	}	782	}
640		783
641	static void	784	static void
…		…
644	if (!cctx)	787	if (!cctx)
645	return;	788	return;
646		789
647	--cctx_count;	790	--cctx_count;
648		791
649	#if USE_VALGRIND	792	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	793	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	794	#endif
652		795
653	#if HAVE_MMAP	796	#if HAVE_MMAP
		797	if (cctx->flags & CC_MAPPED)
654	munmap (cctx->sptr, cctx->ssize);	798	munmap (cctx->sptr, cctx->ssize);
655	#else	799	else
		800	#endif
656	Safefree (cctx->sptr);	801	Safefree (cctx->sptr);
657	#endif
658		802
659	Safefree (cctx);	803	Safefree (cctx);
660	}	804	}
661		805
662	static coro_cctx *	806	static coro_cctx *
663	cctx_get ()	807	cctx_get (pTHX)
664	{	808	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	809	while (cctx_first)
668	{	810	{
669	cctx = cctx_first;	811	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	812	cctx_first = cctx->next;
671	--cctx_idle;	813	--cctx_idle;
672	}	814
673	else	815	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
674	{	816	return cctx;
675	cctx = cctx_new ();	817
676	PL_op = PL_op->op_next;	818	cctx_destroy (cctx);
677	}	819	}
678		820
679	return cctx;	821	return cctx_new ();
680	}	822	}
681		823
682	static void	824	static void
683	cctx_put (coro_cctx *cctx)	825	cctx_put (coro_cctx *cctx)
684	{	826	{
…		…
687	{	829	{
688	coro_cctx *first = cctx_first;	830	coro_cctx *first = cctx_first;
689	cctx_first = first->next;	831	cctx_first = first->next;
690	--cctx_idle;	832	--cctx_idle;
691		833
692	assert (!first->inuse);
693	cctx_destroy (first);	834	cctx_destroy (first);
694	}	835	}
695		836
696	++cctx_idle;	837	++cctx_idle;
697	cctx->next = cctx_first;	838	cctx->next = cctx_first;
698	cctx_first = cctx;	839	cctx_first = cctx;
699	}	840	}
700		841
		842	/** coroutine switching *****************************************************/
		843
701	/* never call directly, always through the coro_state_transfer global variable */	844	/* never call directly, always through the coro_state_transfer global variable */
702	static void NOINLINE	845	static void NOINLINE
703	transfer (struct coro *prev, struct coro *next)	846	transfer (pTHX_ struct coro *prev, struct coro *next)
704	{	847	{
705	dSTACKLEVEL;	848	dSTACKLEVEL;
706		849
707	/* sometimes transfer is only called to set idle_sp */	850	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	851	if (!next)
709	{	852	{
710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	853	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
711	assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */	854	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
712	}	855	}
713	else if (prev != next)	856	else if (prev != next)
714	{	857	{
715	coro_cctx *prev__cctx;	858	coro_cctx *prev__cctx;
716		859
717	if (prev->flags & CF_NEW)	860	if (prev->flags & CF_NEW)
718	{	861	{
719	/* create a new empty context */	862	/* create a new empty context */
720	Newz (0, prev->cctx, 1, coro_cctx);	863	Newz (0, prev->cctx, 1, coro_cctx);
721	prev->cctx->inuse = 1;
722	prev->flags &= ~CF_NEW;	864	prev->flags &= ~CF_NEW;
723	prev->flags |= CF_RUNNING;	865	prev->flags |= CF_RUNNING;
724	}	866	}
725		867
726	/*TODO: must not croak here */	868	/*TODO: must not croak here */
727	if (!prev->flags & CF_RUNNING)	869	if (!prev->flags & CF_RUNNING)
728	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");
729		871
730	if (next->flags & CF_RUNNING)	872	if (next->flags & CF_RUNNING)
731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	873	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		874
		875	if (next->flags & CF_DESTROYED)
		876	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
732		877
733	prev->flags &= ~CF_RUNNING;	878	prev->flags &= ~CF_RUNNING;
734	next->flags |= CF_RUNNING;	879	next->flags |= CF_RUNNING;
735		880
736	LOCK;	881	LOCK;
…		…
738	if (next->flags & CF_NEW)	883	if (next->flags & CF_NEW)
739	{	884	{
740	/* need to start coroutine */	885	/* need to start coroutine */
741	next->flags &= ~CF_NEW;	886	next->flags &= ~CF_NEW;
742	/* first get rid of the old state */	887	/* first get rid of the old state */
743	save_perl (prev);	888	save_perl (aTHX_ prev);
744	/* setup coroutine call */	889	/* setup coroutine call */
745	setup_coro (next);	890	setup_coro (aTHX_ next);
746	/* need a new stack */
747	assert (!next->cctx);
748	}	891	}
749	else	892	else
750	{	893	{
751	/* coroutine already started */	894	/* coroutine already started */
752	save_perl (prev);	895	save_perl (aTHX_ prev);
753	load_perl (next);	896	load_perl (aTHX_ next);
754	}	897	}
755		898
756	prev__cctx = prev->cctx;	899	prev__cctx = prev->cctx;
757		900
758	/* possibly "free" the cctx */	901	/* possibly "free" the cctx */
759	if (prev__cctx->idle_sp == STACKLEVEL)	902	if (prev__cctx->idle_sp == STACKLEVEL)
760	{	903	{
761	/* 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 */
762	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));
763		906
764	prev->cctx = 0;	907	prev->cctx = 0;
765		908
766	cctx_put (prev__cctx);	909	cctx_put (prev__cctx);
767	prev__cctx->inuse = 0;
768	}	910	}
769		911
770	if (!next->cctx)	912	if (!next->cctx)
771	{
772	next->cctx = cctx_get ();	913	next->cctx = cctx_get (aTHX);
773	assert (!next->cctx->inuse);
774	next->cctx->inuse = 1;
775	}
776		914
777	if (prev__cctx != next->cctx)	915	if (prev__cctx != next->cctx)
778	{	916	{
779	prev__cctx->top_env = PL_top_env;	917	prev__cctx->top_env = PL_top_env;
780	PL_top_env = next->cctx->top_env;	918	PL_top_env = next->cctx->top_env;
781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	919	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
782	}	920	}
783		921
784	free_coro_mortal ();	922	free_coro_mortal (aTHX);
785
786	UNLOCK;	923	UNLOCK;
787	}	924	}
788	}	925	}
789		926
790	struct transfer_args	927	struct transfer_args
791	{	928	{
792	struct coro *prev, *next;	929	struct coro *prev, *next;
793	};	930	};
794		931
795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	932	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
796		933
		934	/** high level stuff ********************************************************/
		935
797	static void	936	static int
798	coro_state_destroy (struct coro *coro)	937	coro_state_destroy (pTHX_ struct coro *coro)
799	{	938	{
800	if (coro->refcnt--)	939	if (coro->flags & CF_DESTROYED)
801	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 */
802		954
803	if (coro->mainstack && coro->mainstack != main_mainstack)	955	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	956	{
805	struct coro temp;	957	struct coro temp;
		958
		959	assert (!(coro->flags & CF_RUNNING));
		960
806	Zero (&temp, 1, struct coro);	961	Zero (&temp, 1, struct coro);
807	temp.save = CORO_SAVE_ALL;	962	temp.save = CORO_SAVE_ALL;
808		963
809	if (coro->flags & CF_RUNNING)	964	if (coro->flags & CF_RUNNING)
810	croak ("FATAL: tried to destroy currently running coroutine");	965	croak ("FATAL: tried to destroy currently running coroutine");
811		966
812	save_perl (&temp);	967	save_perl (aTHX_ &temp);
813	load_perl (coro);	968	load_perl (aTHX_ coro);
814		969
815	coro_destroy_stacks ();	970	coro_destroy_stacks (aTHX);
816		971
817	load_perl (&temp); /* this will get rid of defsv etc.. */	972	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
818		973
819	coro->mainstack = 0;	974	coro->mainstack = 0;
820	}	975	}
821		976
822	cctx_destroy (coro->cctx);	977	cctx_destroy (coro->cctx);
823	SvREFCNT_dec (coro->args);	978	SvREFCNT_dec (coro->args);
824	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;
825	}	985	}
826		986
827	static int	987	static int
828	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	988	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
829	{	989	{
830	struct coro *coro = (struct coro *)mg->mg_ptr;	990	struct coro *coro = (struct coro *)mg->mg_ptr;
831	mg->mg_ptr = 0;	991	mg->mg_ptr = 0;
832		992
		993	coro->hv = 0;
		994
		995	if (--coro->refcnt < 0)
		996	{
833	coro_state_destroy (coro);	997	coro_state_destroy (aTHX_ coro);
		998	Safefree (coro);
		999	}
834		1000
835	return 0;	1001	return 0;
836	}	1002	}
837		1003
838	static int	1004	static int
…		…
845	return 0;	1011	return 0;
846	}	1012	}
847		1013
848	static MGVTBL coro_state_vtbl = {	1014	static MGVTBL coro_state_vtbl = {
849	0, 0, 0, 0,	1015	0, 0, 0, 0,
850	coro_state_clear,	1016	coro_state_free,
851	0,	1017	0,
852	#ifdef MGf_DUP	1018	#ifdef MGf_DUP
853	coro_state_dup,	1019	coro_state_dup,
854	#else	1020	#else
855	# define MGf_DUP 0	1021	# define MGf_DUP 0
856	#endif	1022	#endif
857	};	1023	};
858		1024
859	static struct coro *	1025	static struct coro *
860	SvSTATE (SV *coro)	1026	SvSTATE_ (pTHX_ SV *coro)
861	{	1027	{
862	HV *stash;	1028	HV *stash;
863	MAGIC *mg;	1029	MAGIC *mg;
864		1030
865	if (SvROK (coro))	1031	if (SvROK (coro))
…		…
871	/* very slow, but rare, check */	1037	/* very slow, but rare, check */
872	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1038	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
873	croak ("Coro::State object required");	1039	croak ("Coro::State object required");
874	}	1040	}
875		1041
876	mg = SvMAGIC (coro);	1042	mg = CORO_MAGIC (coro);
877	assert (mg->mg_type == PERL_MAGIC_ext);
878	return (struct coro *)mg->mg_ptr;	1043	return (struct coro *)mg->mg_ptr;
879	}	1044	}
880		1045
		1046	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1047
881	static void	1048	static void
882	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1049	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
883	{	1050	{
884	ta->prev = SvSTATE (prev_sv);	1051	ta->prev = SvSTATE (prev_sv);
885	ta->next = SvSTATE (next_sv);	1052	ta->next = SvSTATE (next_sv);
886	}	1053	}
887		1054
888	static void	1055	static void
889	api_transfer (SV *prev_sv, SV *next_sv)	1056	api_transfer (SV *prev_sv, SV *next_sv)
890	{	1057	{
		1058	dTHX;
891	struct transfer_args ta;	1059	struct transfer_args ta;
892		1060
893	prepare_transfer (&ta, prev_sv, next_sv);	1061	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
894	TRANSFER (ta);	1062	TRANSFER (ta);
895	}	1063	}
896		1064
897	static int	1065	static int
898	api_save (SV *coro_sv, int new_save)	1066	api_save (SV *coro_sv, int new_save)
899	{	1067	{
		1068	dTHX;
900	struct coro *coro = SvSTATE (coro_sv);	1069	struct coro *coro = SvSTATE (coro_sv);
901	int old_save = coro->save;	1070	int old_save = coro->save;
902		1071
903	if (new_save >= 0)	1072	if (new_save >= 0)
904	coro->save = new_save;	1073	coro->save = new_save;
…		…
906	return old_save;	1075	return old_save;
907	}	1076	}
908		1077
909	/** Coro ********************************************************************/	1078	/** Coro ********************************************************************/
910		1079
911	#define PRIO_MAX 3
912	#define PRIO_HIGH 1
913	#define PRIO_NORMAL 0
914	#define PRIO_LOW -1
915	#define PRIO_IDLE -3
916	#define PRIO_MIN -4
917
918	/* for Coro.pm */
919	static SV *coro_current;
920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
921	static int coro_nready;
922
923	static void	1080	static void
924	coro_enq (SV *coro_sv)	1081	coro_enq (pTHX_ SV *coro_sv)
925	{	1082	{
926	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);
927	coro_nready++;
928	}	1084	}
929		1085
930	static SV *	1086	static SV *
931	coro_deq (int min_prio)	1087	coro_deq (pTHX_ int min_prio)
932	{	1088	{
933	int prio = PRIO_MAX - PRIO_MIN;	1089	int prio = PRIO_MAX - PRIO_MIN;
934		1090
935	min_prio -= PRIO_MIN;	1091	min_prio -= PRIO_MIN;
936	if (min_prio < 0)	1092	if (min_prio < 0)
937	min_prio = 0;	1093	min_prio = 0;
938		1094
939	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1095	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
940	if (AvFILLp (coro_ready [prio]) >= 0)	1096	if (AvFILLp (coro_ready [prio]) >= 0)
941	{
942	coro_nready--;
943	return av_shift (coro_ready [prio]);	1097	return av_shift (coro_ready [prio]);
944	}
945		1098
946	return 0;	1099	return 0;
947	}	1100	}
948		1101
949	static int	1102	static int
950	api_ready (SV *coro_sv)	1103	api_ready (SV *coro_sv)
951	{	1104	{
		1105	dTHX;
952	struct coro *coro;	1106	struct coro *coro;
953		1107
954	if (SvROK (coro_sv))	1108	if (SvROK (coro_sv))
955	coro_sv = SvRV (coro_sv);	1109	coro_sv = SvRV (coro_sv);
956		1110
…		…
960	return 0;	1114	return 0;
961		1115
962	coro->flags |= CF_READY;	1116	coro->flags |= CF_READY;
963		1117
964	LOCK;	1118	LOCK;
965	coro_enq (SvREFCNT_inc (coro_sv));	1119	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1120	++coro_nready;
966	UNLOCK;	1121	UNLOCK;
967		1122
968	return 1;	1123	return 1;
969	}	1124	}
970		1125
971	static int	1126	static int
972	api_is_ready (SV *coro_sv)	1127	api_is_ready (SV *coro_sv)
973	{	1128	{
		1129	dTHX;
974	return !!SvSTATE (coro_sv)->flags & CF_READY;	1130	return !!(SvSTATE (coro_sv)->flags & CF_READY);
975	}	1131	}
976		1132
977	static void	1133	static void
978	prepare_schedule (struct transfer_args *ta)	1134	prepare_schedule (pTHX_ struct transfer_args *ta)
979	{	1135	{
980	SV *prev, *next;	1136	SV *prev_sv, *next_sv;
981		1137
982	for (;;)	1138	for (;;)
983	{	1139	{
984	LOCK;	1140	LOCK;
985	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;
986	UNLOCK;	1173	UNLOCK;
987
988	if (next)
989	break;	1174	break;
990
991	{
992	dSP;
993
994	ENTER;
995	SAVETMPS;
996
997	PUSHMARK (SP);
998	PUTBACK;
999	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1000
1001	FREETMPS;
1002	LEAVE;
1003	}	1175	}
1004	}
1005
1006	prev = SvRV (coro_current);
1007	SvRV_set (coro_current, next);
1008		1176
1009	/* free this only after the transfer */	1177	/* free this only after the transfer */
1010	LOCK;	1178	prev_sv = SvRV (coro_current);
1011	free_coro_mortal ();	1179	SvRV_set (coro_current, next_sv);
1012	UNLOCK;
1013	coro_mortal = prev;
1014
1015	assert (!SvROK(prev));//D
1016	assert (!SvROK(next));//D
1017
1018	ta->prev = SvSTATE (prev);	1180	ta->prev = SvSTATE (prev_sv);
1019	ta->next = SvSTATE (next);
1020		1181
1021	assert (ta->next->flags & CF_READY);	1182	assert (ta->next->flags & CF_READY);
1022	ta->next->flags &= ~CF_READY;	1183	ta->next->flags &= ~CF_READY;
1023	}
1024		1184
		1185	LOCK;
		1186	free_coro_mortal (aTHX);
		1187	coro_mortal = prev_sv;
		1188	UNLOCK;
		1189	}
		1190
1025	static void	1191	static void
1026	prepare_cede (struct transfer_args *ta)	1192	prepare_cede (pTHX_ struct transfer_args *ta)
1027	{	1193	{
1028	api_ready (coro_current);	1194	api_ready (coro_current);
1029
1030	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;
1031	}	1210	}
1032		1211
1033	static void	1212	static void
1034	api_schedule (void)	1213	api_schedule (void)
1035	{	1214	{
		1215	dTHX;
1036	struct transfer_args ta;	1216	struct transfer_args ta;
1037		1217
1038	prepare_schedule (&ta);	1218	prepare_schedule (aTHX_ &ta);
1039	TRANSFER (ta);	1219	TRANSFER (ta);
1040	}	1220	}
1041		1221
1042	static void	1222	static int
1043	api_cede (void)	1223	api_cede (void)
1044	{	1224	{
		1225	dTHX;
1045	struct transfer_args ta;	1226	struct transfer_args ta;
1046		1227
1047	prepare_cede (&ta);	1228	prepare_cede (aTHX_ &ta);
		1229
		1230	if (ta.prev != ta.next)
		1231	{
1048	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;
1049	}	1252	}
1050		1253
1051	MODULE = Coro::State PACKAGE = Coro::State	1254	MODULE = Coro::State PACKAGE = Coro::State
1052		1255
1053	PROTOTYPES: DISABLE	1256	PROTOTYPES: DISABLE
…		…
1063		1266
1064	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1267	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1268	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1066	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1269	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	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));
1068	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1273	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1069		1274
1070	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;
1071		1280
1072	coroapi.ver = CORO_API_VERSION;	1281	coroapi.ver = CORO_API_VERSION;
1073	coroapi.transfer = api_transfer;	1282	coroapi.transfer = api_transfer;
1074		1283
1075	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1284	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1083	HV *hv;	1292	HV *hv;
1084	int i;	1293	int i;
1085		1294
1086	Newz (0, coro, 1, struct coro);	1295	Newz (0, coro, 1, struct coro);
1087	coro->args = newAV ();	1296	coro->args = newAV ();
1088	coro->save = CORO_SAVE_ALL;	1297	coro->save = CORO_SAVE_DEF;
1089	coro->flags = CF_NEW;	1298	coro->flags = CF_NEW;
1090		1299
		1300	if (coro_first) coro_first->prev = coro;
		1301	coro->next = coro_first;
		1302	coro_first = coro;
		1303
1091	hv = newHV ();	1304	coro->hv = hv = newHV ();
1092	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;
1093	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1306	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1094		1307
1095	for (i = 1; i < items; i++)	1308	for (i = 1; i < items; i++)
1096	av_push (coro->args, newSVsv (ST (i)));	1309	av_push (coro->args, newSVsv (ST (i)));
…		…
1103	CODE:	1316	CODE:
1104	RETVAL = api_save (coro, new_save);	1317	RETVAL = api_save (coro, new_save);
1105	OUTPUT:	1318	OUTPUT:
1106	RETVAL	1319	RETVAL
1107		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:
		1330	RETVAL
		1331
1108	void	1332	void
1109	_set_stacklevel (...)	1333	_set_stacklevel (...)
1110	ALIAS:	1334	ALIAS:
1111	Coro::State::transfer = 1	1335	Coro::State::transfer = 1
1112	Coro::schedule = 2	1336	Coro::schedule = 2
1113	Coro::cede = 3	1337	Coro::cede = 3
		1338	Coro::cede_notself = 4
1114	CODE:	1339	CODE:
1115	{	1340	{
1116	struct transfer_args ta;	1341	struct transfer_args ta;
1117		1342
1118	switch (ix)	1343	switch (ix)
…		…
1124		1349
1125	case 1:	1350	case 1:
1126	if (items != 2)	1351	if (items != 2)
1127	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1352	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1128		1353
1129	prepare_transfer (&ta, ST (0), ST (1));	1354	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1130	break;	1355	break;
1131		1356
1132	case 2:	1357	case 2:
1133	prepare_schedule (&ta);	1358	prepare_schedule (aTHX_ &ta);
1134	break;	1359	break;
1135		1360
1136	case 3:	1361	case 3:
1137	prepare_cede (&ta);	1362	prepare_cede (aTHX_ &ta);
		1363	break;
		1364
		1365	case 4:
		1366	if (!prepare_cede_notself (aTHX_ &ta))
		1367	XSRETURN_EMPTY;
		1368
1138	break;	1369	break;
1139	}	1370	}
1140		1371
		1372	BARRIER;
1141	TRANSFER (ta);	1373	TRANSFER (ta);
1142	}
1143		1374
1144	void	1375	if (GIMME_V != G_VOID && ta.next != ta.prev)
1145	_clone_state_from (SV *dst, SV *src)	1376	XSRETURN_YES;
		1377	}
		1378
		1379	bool
		1380	_destroy (SV *coro_sv)
1146	CODE:	1381	CODE:
1147	{	1382	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1148	struct coro *coro_src = SvSTATE (src);	1383	OUTPUT:
1149		1384	RETVAL
1150	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1151
1152	++coro_src->refcnt;
1153	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1154	}
1155		1385
1156	void	1386	void
1157	_exit (code)	1387	_exit (code)
1158	int code	1388	int code
1159	PROTOTYPE: $	1389	PROTOTYPE: $
1160	CODE:	1390	CODE:
1161	_exit (code);	1391	_exit (code);
1162		1392
1163	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
1164	cctx_count ()	1403	cctx_count ()
1165	CODE:	1404	CODE:
1166	RETVAL = cctx_count;	1405	RETVAL = cctx_count;
1167	OUTPUT:	1406	OUTPUT:
1168	RETVAL	1407	RETVAL
…		…
1172	CODE:	1411	CODE:
1173	RETVAL = cctx_idle;	1412	RETVAL = cctx_idle;
1174	OUTPUT:	1413	OUTPUT:
1175	RETVAL	1414	RETVAL
1176		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->flags & CF_RUNNING)
		1487	croak ("cannot enable tracing on running coroutine");
		1488
		1489	if (coro->cctx)
		1490	croak ("cannot enable tracing on coroutine with custom stack");
		1491
		1492	coro->cctx = cctx_new ();
		1493	coro->cctx->flags |= CC_TRACE;
		1494	}
		1495	else
		1496	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1497	{
		1498	coro->cctx->flags &= ~CC_TRACE;
		1499	coro->cctx->flags |= CC_NOREUSE;
		1500	}
		1501
		1502	SV *
		1503	has_stack (Coro::State coro)
		1504	PROTOTYPE: $
		1505	CODE:
		1506	RETVAL = boolSV (!!coro->cctx);
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	IV
		1511	rss (Coro::State coro)
		1512	PROTOTYPE: $
		1513	CODE:
		1514	RETVAL = coro_rss (coro);
		1515	OUTPUT:
		1516	RETVAL
		1517
		1518
1177	MODULE = Coro::State PACKAGE = Coro	1519	MODULE = Coro::State PACKAGE = Coro
1178		1520
1179	BOOT:	1521	BOOT:
1180	{	1522	{
1181	int i;	1523	int i;
		1524
		1525	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1526	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1527	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1528
		1529	coro_current = get_sv ("Coro::current", FALSE);
		1530	SvREADONLY_on (coro_current);
1182		1531
1183	coro_stash = gv_stashpv ("Coro", TRUE);	1532	coro_stash = gv_stashpv ("Coro", TRUE);
1184		1533
1185	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1534	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1186	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1535	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1187	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1536	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1188	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1537	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1189	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1538	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1190	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1539	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1191		1540
1192	coro_current = get_sv ("Coro::current", FALSE);
1193	SvREADONLY_on (coro_current);
1194
1195	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1541	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1196	coro_ready[i] = newAV ();	1542	coro_ready[i] = newAV ();
1197		1543
1198	{	1544	{
1199	SV *sv = perl_get_sv("Coro::API", 1);	1545	SV *sv = perl_get_sv("Coro::API", 1);
1200		1546
1201	coroapi.schedule = api_schedule;	1547	coroapi.schedule = api_schedule;
1202	coroapi.save = api_save;	1548	coroapi.save = api_save;
1203	coroapi.cede = api_cede;	1549	coroapi.cede = api_cede;
		1550	coroapi.cede_notself = api_cede_notself;
1204	coroapi.ready = api_ready;	1551	coroapi.ready = api_ready;
1205	coroapi.is_ready = api_is_ready;	1552	coroapi.is_ready = api_is_ready;
1206	coroapi.nready = &coro_nready;	1553	coroapi.nready = &coro_nready;
1207	coroapi.current = coro_current;	1554	coroapi.current = coro_current;
1208		1555
1209	GCoroAPI = &coroapi;	1556	GCoroAPI = &coroapi;
1210	sv_setiv (sv, (IV)&coroapi);	1557	sv_setiv (sv, (IV)&coroapi);
1211	SvREADONLY_on (sv);	1558	SvREADONLY_on (sv);
1212	}	1559	}
…		…
1228	RETVAL = coro->prio;	1575	RETVAL = coro->prio;
1229		1576
1230	if (items > 1)	1577	if (items > 1)
1231	{	1578	{
1232	if (ix)	1579	if (ix)
1233	newprio += coro->prio;	1580	newprio = coro->prio - newprio;
1234		1581
1235	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1582	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1236	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1583	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1237		1584
1238	coro->prio = newprio;	1585	coro->prio = newprio;
1239	}	1586	}
1240	}	1587	}
		1588	OUTPUT:
		1589	RETVAL
1241		1590
1242	SV *	1591	SV *
1243	ready (SV *self)	1592	ready (SV *self)
1244	PROTOTYPE: $	1593	PROTOTYPE: $
1245	CODE:	1594	CODE:
1246	RETVAL = boolSV (api_ready (self));	1595	RETVAL = boolSV (api_ready (self));
1247	OUTPUT:	1596	OUTPUT:
1248	RETVAL	1597	RETVAL
1249		1598
1250	SV *
1251	is_ready (SV *self)
1252	PROTOTYPE: $
1253	CODE:
1254	RETVAL = boolSV (api_is_ready (self));
1255	OUTPUT:
1256	RETVAL
1257
1258	int	1599	int
1259	nready (...)	1600	nready (...)
1260	PROTOTYPE:	1601	PROTOTYPE:
1261	CODE:	1602	CODE:
1262	RETVAL = coro_nready;	1603	RETVAL = coro_nready;
1263	OUTPUT:	1604	OUTPUT:
1264	RETVAL	1605	RETVAL
1265		1606
		1607	# for async_pool speedup
		1608	void
		1609	_pool_1 (SV *cb)
		1610	CODE:
		1611	{
		1612	int i, len;
		1613	HV *hv = (HV *)SvRV (coro_current);
		1614	AV *defav = GvAV (PL_defgv);
		1615	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1616	AV *invoke_av;
		1617
		1618	if (!invoke)
		1619	croak ("\3terminate\2\n");
		1620
		1621	hv_store (hv, "desc", sizeof ("desc") - 1,
		1622	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1623
		1624	invoke_av = (AV *)SvRV (invoke);
		1625	len = av_len (invoke_av);
		1626
		1627	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1628
		1629	if (len > 0)
		1630	{
		1631	av_fill (defav, len - 1);
		1632	for (i = 0; i < len; ++i)
		1633	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1634	}
		1635
		1636	SvREFCNT_dec (invoke);
		1637	}
		1638
		1639	void
		1640	_pool_2 (SV *cb)
		1641	CODE:
		1642	{
		1643	struct coro *coro = SvSTATE (coro_current);
		1644
		1645	sv_setsv (cb, &PL_sv_undef);
		1646
		1647	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1648	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1649	croak ("\3terminate\2\n");
		1650
		1651	av_clear (GvAV (PL_defgv));
		1652	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1653	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1654	coro->save = CORO_SAVE_DEF;
		1655	coro->prio = 0;
		1656	av_push (av_async_pool, newSVsv (coro_current));
		1657	}
		1658
		1659
1266	MODULE = Coro::State PACKAGE = Coro::AIO	1660	MODULE = Coro::State PACKAGE = Coro::AIO
1267		1661
1268	SV *	1662	SV *
1269	_get_state ()	1663	_get_state ()
1270	CODE:	1664	CODE:

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