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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC vs.
Revision 1.173 by root, Sun Sep 30 13:41:45 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
…		…
121	I32 laststype;	125	I32 laststype;
122	int laststatval;	126	int laststatval;
123	Stat_t statcache;	127	Stat_t statcache;
124	};	128	};
125		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
126	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
127	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;
128	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
129	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
130		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
131	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
132	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		152	};
133		153
134	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
135	typedef struct coro_cctx {	155	typedef struct coro_cctx {
136	struct coro_cctx *next;	156	struct coro_cctx *next;
137		157
138	/* the stack */	158	/* the stack */
139	void *sptr;	159	void *sptr;
140	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
141		161
142	/* cpu state */	162	/* cpu state */
143	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	163	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
144	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	164	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
145	JMPENV *top_env;	165	JMPENV *top_env;
146	coro_context cctx;	166	coro_context cctx;
147		167
148	int inuse;
149
150	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
151	int valgrind_id;	169	int valgrind_id;
152	#endif	170	#endif
		171	unsigned char flags;
153	} coro_cctx;	172	} coro_cctx;
154		173
155	enum {	174	enum {
156	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
157	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
…		…
172		191
173	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
174	AV *defav; /* @_ */	193	AV *defav; /* @_ */
175	SV *defsv; /* $_ */	194	SV *defsv; /* $_ */
176	SV *errsv; /* $@ */	195	SV *errsv; /* $@ */
		196	GV *deffh; /* default filehandle */
177	SV *irssv; /* $/ */	197	SV *irssv; /* $/ */
178	SV *irssv_sv; /* real $/ cache */	198	SV *irssv_sv; /* real $/ cache */
179		199
180	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
181	# include "state.h"	201	# include "state.h"
182	#undef VAR	202	#undef VAR
183		203
		204	/* statistics */
		205	int usecount; /* number of switches to this coro */
		206
184	/* coro process data */	207	/* coro process data */
185	int prio;	208	int prio;
		209
		210	/* linked list */
		211	struct coro *next, *prev;
		212	HV *hv; /* the perl hash associated with this coro, if any */
186	};	213	};
187		214
188	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
189	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
190		217
		218	/** Coro ********************************************************************/
		219
		220	#define PRIO_MAX 3
		221	#define PRIO_HIGH 1
		222	#define PRIO_NORMAL 0
		223	#define PRIO_LOW -1
		224	#define PRIO_IDLE -3
		225	#define PRIO_MIN -4
		226
		227	/* for Coro.pm */
		228	static SV *coro_current;
		229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		230	static int coro_nready;
		231	static struct coro *coro_first;
		232
		233	/** lowlevel stuff **********************************************************/
		234
191	static AV *	235	static AV *
192	coro_clone_padlist (CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
193	{	237	{
194	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
195	AV *newpadlist, *newpad;	239	AV *newpadlist, *newpad;
196		240
197	newpadlist = newAV ();	241	newpadlist = newAV ();
…		…
209		253
210	return newpadlist;	254	return newpadlist;
211	}	255	}
212		256
213	static void	257	static void
214	free_padlist (AV *padlist)	258	free_padlist (pTHX_ AV *padlist)
215	{	259	{
216	/* may be during global destruction */	260	/* may be during global destruction */
217	if (SvREFCNT (padlist))	261	if (SvREFCNT (padlist))
218	{	262	{
219	I32 i = AvFILLp (padlist);	263	I32 i = AvFILLp (padlist);
…		…
240	AV *padlist;	284	AV *padlist;
241	AV *av = (AV *)mg->mg_obj;	285	AV *av = (AV *)mg->mg_obj;
242		286
243	/* casting is fun. */	287	/* casting is fun. */
244	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	288	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
245	free_padlist (padlist);	289	free_padlist (aTHX_ padlist);
246		290
247	SvREFCNT_dec (av);	291	SvREFCNT_dec (av);
248		292
249	return 0;	293	return 0;
250	}	294	}
…		…
258	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
259	? SvMAGIC (cv) \	303	? SvMAGIC (cv) \
260	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
261	: 0	305	: 0
262		306
		307	static struct coro *
		308	SvSTATE_ (pTHX_ SV *coro)
		309	{
		310	HV *stash;
		311	MAGIC *mg;
		312
		313	if (SvROK (coro))
		314	coro = SvRV (coro);
		315
		316	if (SvTYPE (coro) != SVt_PVHV)
		317	croak ("Coro::State object required");
		318
		319	stash = SvSTASH (coro);
		320	if (stash != coro_stash && stash != coro_state_stash)
		321	{
		322	/* very slow, but rare, check */
		323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		324	croak ("Coro::State object required");
		325	}
		326
		327	mg = CORO_MAGIC (coro);
		328	return (struct coro *)mg->mg_ptr;
		329	}
		330
		331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		332
263	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
264	static void	334	static void
265	get_padlist (CV *cv)	335	get_padlist (pTHX_ CV *cv)
266	{	336	{
267	MAGIC *mg = CORO_MAGIC (cv);	337	MAGIC *mg = CORO_MAGIC (cv);
268	AV *av;	338	AV *av;
269		339
270	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
271	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
272	else	342	else
273	{	343	{
274	#if PREFER_PERL_FUNCTIONS	344	#if CORO_PREFER_PERL_FUNCTIONS
275	/* this is probably cleaner, but also slower? */	345	/* this is probably cleaner, but also slower? */
276	CV *cp = Perl_cv_clone (cv);	346	CV *cp = Perl_cv_clone (cv);
277	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
278	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
279	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
280	#else	350	#else
281	CvPADLIST (cv) = coro_clone_padlist (cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
282	#endif	352	#endif
283	}	353	}
284	}	354	}
285		355
286	static void	356	static void
287	put_padlist (CV *cv)	357	put_padlist (pTHX_ CV *cv)
288	{	358	{
289	MAGIC *mg = CORO_MAGIC (cv);	359	MAGIC *mg = CORO_MAGIC (cv);
290	AV *av;	360	AV *av;
291		361
292	if (!mg)	362	if (!mg)
…		…
303	av_extend (av, AvMAX (av) + 1);	373	av_extend (av, AvMAX (av) + 1);
304		374
305	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
306	}	376	}
307		377
		378	/** load & save, init *******************************************************/
		379
308	#define SB do {	380	#define SB do {
309	#define SE } while (0)	381	#define SE } while (0)
310		382
311	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
312		384
313	static void	385	static void
314	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
315	{	387	{
316	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
317	# include "state.h"	389	# include "state.h"
318	#undef VAR	390	#undef VAR
319		391
320	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
321	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
322	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		396
323	if (c->irssv)	397	if (c->irssv)
324	{	398	{
325	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	399	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		400	{
326	SvREFCNT_dec (c->irssv);	401	SvREFCNT_dec (c->irssv);
		402	c->irssv = 0;
		403	}
327	else	404	else
328	{	405	{
329	REPLACE_SV (PL_rs, c->irssv);	406	REPLACE_SV (PL_rs, c->irssv);
330	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
331	sv_setsv (c->irssv_sv, PL_rs);	408	sv_setsv (c->irssv_sv, PL_rs);
…		…
337	CV *cv;	414	CV *cv;
338		415
339	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
340	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
341	{	418	{
342	put_padlist (cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
343	CvDEPTH (cv) = PTR2IV (POPs);	420	CvDEPTH (cv) = PTR2IV (POPs);
344	CvPADLIST (cv) = (AV *)POPs;	421	CvPADLIST (cv) = (AV *)POPs;
345	}	422	}
346		423
347	PUTBACK;	424	PUTBACK;
348	}	425	}
349	}	426	}
350		427
351	static void	428	static void
352	save_perl (Coro__State c)	429	save_perl (pTHX_ Coro__State c)
353	{	430	{
354	{	431	{
355	dSP;	432	dSP;
356	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
357	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
360	/*	437	/*
361	* the worst thing you can imagine happens first - we have to save	438	* the worst thing you can imagine happens first - we have to save
362	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
363	*/	440	*/
364		441
365	EXTEND (SP, 3 + 1);
366	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
367	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
368	for (;;)	444	for (;;)
369	{	445	{
370	while (cxix >= 0)	446	while (cxix >= 0)
371	{	447	{
372	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
373		449
374	if (CxTYPE (cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
375	{	451	{
376	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
377		453
378	if (CvDEPTH (cv))	454	if (CvDEPTH (cv))
379	{	455	{
…		…
381	PUSHs ((SV *)CvPADLIST (cv));	457	PUSHs ((SV *)CvPADLIST (cv));
382	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
383	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
384		460
385	CvDEPTH (cv) = 0;	461	CvDEPTH (cv) = 0;
386	get_padlist (cv);	462	get_padlist (aTHX_ cv);
387	}	463	}
388	}	464	}
389	}	465	}
390		466
391	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
392	break;	468	break;
393		469
394	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
395	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
396	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
397	}	473	}
398		474
399	PUTBACK;	475	PUTBACK;
400	}	476	}
401		477
402	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
403	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
404	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
405	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
406		483
407	#define VAR(name,type)c->name = PL_ ## name;	484	#define VAR(name,type)c->name = PL_ ## name;
408	# include "state.h"	485	# include "state.h"
409	#undef VAR	486	#undef VAR
…		…
413	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
414	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
415	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
416	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
417	*/	494	*/
418	#if PREFER_PERL_FUNCTIONS	495	#if CORO_PREFER_PERL_FUNCTIONS
419	# define coro_init_stacks init_stacks	496	# define coro_init_stacks init_stacks
420	#else	497	#else
421	static void	498	static void
422	coro_init_stacks ()	499	coro_init_stacks (pTHX)
423	{	500	{
424	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	501	PL_curstackinfo = new_stackinfo(64, 6);
425	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
426	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
427	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
428		505
429	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
430	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
431	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
432		509
433	New(50,PL_tmps_stack,128,SV*);	510	New(50,PL_tmps_stack,64,SV*);
434	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
435	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
436	PL_tmps_max = 128;	513	PL_tmps_max = 64;
437		514
438	New(54,PL_markstack,32,I32);	515	New(54,PL_markstack,16,I32);
439	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
440	PL_markstack_max = PL_markstack + 32;	517	PL_markstack_max = PL_markstack + 16;
441		518
442	#ifdef SET_MARK_OFFSET	519	#ifdef SET_MARK_OFFSET
443	SET_MARK_OFFSET;	520	SET_MARK_OFFSET;
444	#endif	521	#endif
445		522
446	New(54,PL_scopestack,32,I32);	523	New(54,PL_scopestack,16,I32);
447	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
448	PL_scopestack_max = 32;	525	PL_scopestack_max = 16;
449		526
450	New(54,PL_savestack,64,ANY);	527	New(54,PL_savestack,64,ANY);
451	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
452	PL_savestack_max = 64;	529	PL_savestack_max = 64;
453		530
454	#if !PERL_VERSION_ATLEAST (5,9,0)	531	#if !PERL_VERSION_ATLEAST (5,9,0)
455	New(54,PL_retstack,16,OP*);	532	New(54,PL_retstack,4,OP*);
456	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
457	PL_retstack_max = 16;	534	PL_retstack_max = 4;
458	#endif	535	#endif
459	}	536	}
460	#endif	537	#endif
461		538
462	/*	539	/*
463	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
464	*/	541	*/
465	static void	542	static void
466	coro_destroy_stacks ()	543	coro_destroy_stacks (pTHX)
467	{	544	{
468	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
469	{	546	{
470	/* restore all saved variables and stuff */	547	/* restore all saved variables and stuff */
471	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
…		…
504	#if !PERL_VERSION_ATLEAST (5,9,0)	581	#if !PERL_VERSION_ATLEAST (5,9,0)
505	Safefree (PL_retstack);	582	Safefree (PL_retstack);
506	#endif	583	#endif
507	}	584	}
508		585
		586	static size_t
		587	coro_rss (pTHX_ struct coro *coro)
		588	{
		589	size_t rss = sizeof (coro);
		590
		591	if (coro->mainstack)
		592	{
		593	if (coro->flags & CF_RUNNING)
		594	{
		595	#define VAR(name,type)coro->name = PL_ ## name;
		596	# include "state.h"
		597	#undef VAR
		598	}
		599
		600	rss += sizeof (coro->curstackinfo);
		601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		604	rss += coro->tmps_max * sizeof (SV *);
		605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		606	rss += coro->scopestack_max * sizeof (I32);
		607	rss += coro->savestack_max * sizeof (ANY);
		608
		609	#if !PERL_VERSION_ATLEAST (5,9,0)
		610	rss += coro->retstack_max * sizeof (OP *);
		611	#endif
		612	}
		613
		614	return rss;
		615	}
		616
		617	/** coroutine stack handling ************************************************/
		618
509	static void	619	static void
510	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
511	{	621	{
512	/*	622	/*
513	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
514	*/	624	*/
515
516	coro_init_stacks ();	625	coro_init_stacks (aTHX);
517		626
		627	PL_runops = RUNOPS_DEFAULT;
518	PL_curcop = &PL_compiling;	628	PL_curcop = &PL_compiling;
519	PL_in_eval = EVAL_NULL;	629	PL_in_eval = EVAL_NULL;
		630	PL_comppad = 0;
520	PL_curpm = 0;	631	PL_curpm = 0;
521	PL_localizing = 0;	632	PL_localizing = 0;
522	PL_dirty = 0;	633	PL_dirty = 0;
523	PL_restartop = 0;	634	PL_restartop = 0;
524		635
…		…
532	Zero (&myop, 1, LOGOP);	643	Zero (&myop, 1, LOGOP);
533	myop.op_next = Nullop;	644	myop.op_next = Nullop;
534	myop.op_flags = OPf_WANT_VOID;	645	myop.op_flags = OPf_WANT_VOID;
535		646
536	PUSHMARK (SP);	647	PUSHMARK (SP);
537	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	648	XPUSHs (av_shift (GvAV (PL_defgv)));
538	PUTBACK;	649	PUTBACK;
539	PL_op = (OP *)&myop;	650	PL_op = (OP *)&myop;
540	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
541	SPAGAIN;	652	SPAGAIN;
542	}	653	}
543		654
544	ENTER; /* necessary e.g. for dounwind */	655	ENTER; /* necessary e.g. for dounwind */
545	}	656	}
546		657
547	static void	658	static void
548	free_coro_mortal ()	659	free_coro_mortal (pTHX)
549	{	660	{
550	if (coro_mortal)	661	if (coro_mortal)
551	{	662	{
552	SvREFCNT_dec (coro_mortal);	663	SvREFCNT_dec (coro_mortal);
553	coro_mortal = 0;	664	coro_mortal = 0;
554	}	665	}
555	}	666	}
556		667
		668	static int
		669	runops_trace (pTHX)
		670	{
		671	COP *oldcop = 0;
		672	int oldcxix = -2;
		673	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		674	coro_cctx *cctx = coro->cctx;
		675
		676	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		677	{
		678	PERL_ASYNC_CHECK ();
		679
		680	if (cctx->flags & CC_TRACE_ALL)
		681	{
		682	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		683	{
		684	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		685	SV **bot, **top;
		686	AV *av = newAV (); /* return values */
		687	SV **cb;
		688	dSP;
		689
		690	GV *gv = CvGV (cx->blk_sub.cv);
		691	SV *fullname = sv_2mortal (newSV (0));
		692	if (isGV (gv))
		693	gv_efullname3 (fullname, gv, 0);
		694
		695	bot = PL_stack_base + cx->blk_oldsp + 1;
		696	top = cx->blk_gimme == G_ARRAY ? SP + 1
		697	: cx->blk_gimme == G_SCALAR ? bot + 1
		698	: bot;
		699
		700	while (bot < top)
		701	av_push (av, SvREFCNT_inc (*bot++));
		702
		703	PL_runops = RUNOPS_DEFAULT;
		704	ENTER;
		705	SAVETMPS;
		706	EXTEND (SP, 3);
		707	PUSHMARK (SP);
		708	PUSHs (&PL_sv_no);
		709	PUSHs (fullname);
		710	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		711	PUTBACK;
		712	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		713	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		714	SPAGAIN;
		715	FREETMPS;
		716	LEAVE;
		717	PL_runops = runops_trace;
		718	}
		719
		720	if (oldcop != PL_curcop)
		721	{
		722	oldcop = PL_curcop;
		723
		724	if (PL_curcop != &PL_compiling)
		725	{
		726	SV **cb;
		727
		728	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		729	{
		730	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		731
		732	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		733	{
		734	runops_proc_t old_runops = PL_runops;
		735	dSP;
		736	GV *gv = CvGV (cx->blk_sub.cv);
		737	SV *fullname = sv_2mortal (newSV (0));
		738
		739	if (isGV (gv))
		740	gv_efullname3 (fullname, gv, 0);
		741
		742	PL_runops = RUNOPS_DEFAULT;
		743	ENTER;
		744	SAVETMPS;
		745	EXTEND (SP, 3);
		746	PUSHMARK (SP);
		747	PUSHs (&PL_sv_yes);
		748	PUSHs (fullname);
		749	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		750	PUTBACK;
		751	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		752	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		753	SPAGAIN;
		754	FREETMPS;
		755	LEAVE;
		756	PL_runops = runops_trace;
		757	}
		758
		759	oldcxix = cxstack_ix;
		760	}
		761
		762	if (cctx->flags & CC_TRACE_LINE)
		763	{
		764	dSP;
		765
		766	PL_runops = RUNOPS_DEFAULT;
		767	ENTER;
		768	SAVETMPS;
		769	EXTEND (SP, 3);
		770	PL_runops = RUNOPS_DEFAULT;
		771	PUSHMARK (SP);
		772	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		773	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		774	PUTBACK;
		775	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		776	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		777	SPAGAIN;
		778	FREETMPS;
		779	LEAVE;
		780	PL_runops = runops_trace;
		781	}
		782	}
		783	}
		784	}
		785	}
		786
		787	TAINT_NOT;
		788	return 0;
		789	}
		790
557	/* inject a fake call to Coro::State::_cctx_init into the execution */	791	/* inject a fake call to Coro::State::_cctx_init into the execution */
		792	/* _cctx_init should be careful, as it could be called at almost any time */
		793	/* during execution of a perl program */
558	static void NOINLINE	794	static void NOINLINE
559	prepare_cctx (coro_cctx *cctx)	795	prepare_cctx (pTHX_ coro_cctx *cctx)
560	{	796	{
561	dSP;	797	dSP;
562	LOGOP myop;	798	LOGOP myop;
		799
		800	PL_top_env = &PL_start_env;
		801
		802	if (cctx->flags & CC_TRACE)
		803	PL_runops = runops_trace;
563		804
564	Zero (&myop, 1, LOGOP);	805	Zero (&myop, 1, LOGOP);
565	myop.op_next = PL_op;	806	myop.op_next = PL_op;
566	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	807	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
567		808
…		…
573	PL_op = (OP *)&myop;	814	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	815	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	816	SPAGAIN;
576	}	817	}
577		818
		819	/*
		820	* this is a _very_ stripped down perl interpreter ;)
		821	*/
578	static void	822	static void
579	coro_run (void *arg)	823	coro_run (void *arg)
580	{	824	{
		825	dTHX;
		826
581	/* coro_run is the alternative tail of transfer(), so unlock here. */	827	/* coro_run is the alternative tail of transfer(), so unlock here. */
582	UNLOCK;	828	UNLOCK;
583		829
584	/*	830	/* we now skip the entersub that lead to transfer() */
585	* this is a _very_ stripped down perl interpreter ;)	831	PL_op = PL_op->op_next;
586	*/
587	PL_top_env = &PL_start_env;
588		832
589	/* inject call to cctx_init */	833	/* inject a fake subroutine call to cctx_init */
590	prepare_cctx ((coro_cctx *)arg);	834	prepare_cctx (aTHX_ (coro_cctx *)arg);
591		835
592	/* somebody will hit me for both perl_run and PL_restartop */	836	/* somebody or something will hit me for both perl_run and PL_restartop */
593	PL_restartop = PL_op;	837	PL_restartop = PL_op;
594	perl_run (PL_curinterp);	838	perl_run (PL_curinterp);
595		839
596	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	840	/*
597	abort ();	841	* If perl-run returns we assume exit() was being called or the coro
		842	* fell off the end, which seems to be the only valid (non-bug)
		843	* reason for perl_run to return. We try to exit by jumping to the
		844	* bootstrap-time "top" top_env, as we cannot restore the "main"
		845	* coroutine as Coro has no such concept
		846	*/
		847	PL_top_env = main_top_env;
		848	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
598	}	849	}
599		850
600	static coro_cctx *	851	static coro_cctx *
601	cctx_new ()	852	cctx_new ()
602	{	853	{
603	coro_cctx *cctx;	854	coro_cctx *cctx;
		855	void *stack_start;
		856	size_t stack_size;
604		857
605	++cctx_count;	858	++cctx_count;
606		859
607	Newz (0, cctx, 1, coro_cctx);	860	Newz (0, cctx, 1, coro_cctx);
608		861
609	#if HAVE_MMAP	862	#if HAVE_MMAP
610		863
611	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
612	/* mmap supposedly does allocate-on-write for us */	865	/* mmap supposedly does allocate-on-write for us */
613	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	866	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
614		867
615	if (cctx->sptr == (void *)-1)	868	if (cctx->sptr != (void *)-1)
616	{
617	perror ("FATAL: unable to mmap stack for coroutine");
618	_exit (EXIT_FAILURE);
619	}	869	{
620
621	# if STACKGUARD	870	# if CORO_STACKGUARD
622	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	871	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
623	# endif	872	# endif
		873	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		874	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		875	cctx->flags |= CC_MAPPED;
		876	}
		877	else
		878	#endif
		879	{
		880	cctx->ssize = coro_stacksize * (long)sizeof (long);
		881	New (0, cctx->sptr, coro_stacksize, long);
624		882
625	#else
626
627	cctx->ssize = STACKSIZE * (long)sizeof (long);
628	New (0, cctx->sptr, STACKSIZE, long);
629
630	if (!cctx->sptr)	883	if (!cctx->sptr)
631	{	884	{
632	perror ("FATAL: unable to malloc stack for coroutine");	885	perror ("FATAL: unable to allocate stack for coroutine");
633	_exit (EXIT_FAILURE);	886	_exit (EXIT_FAILURE);
634	}	887	}
635		888
636	#endif	889	stack_start = cctx->sptr;
		890	stack_size = cctx->ssize;
		891	}
637		892
638	#if USE_VALGRIND	893	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
639	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
640	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
641	cctx->ssize + (char *)cctx->sptr
642	);
643	#endif
644
645	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	894	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
646		895
647	return cctx;	896	return cctx;
648	}	897	}
649		898
650	static void	899	static void
…		…
653	if (!cctx)	902	if (!cctx)
654	return;	903	return;
655		904
656	--cctx_count;	905	--cctx_count;
657		906
658	#if USE_VALGRIND	907	#if CORO_USE_VALGRIND
659	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	908	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
660	#endif	909	#endif
661		910
662	#if HAVE_MMAP	911	#if HAVE_MMAP
		912	if (cctx->flags & CC_MAPPED)
663	munmap (cctx->sptr, cctx->ssize);	913	munmap (cctx->sptr, cctx->ssize);
664	#else	914	else
		915	#endif
665	Safefree (cctx->sptr);	916	Safefree (cctx->sptr);
666	#endif
667		917
668	Safefree (cctx);	918	Safefree (cctx);
669	}	919	}
670		920
671	static coro_cctx *	921	static coro_cctx *
672	cctx_get ()	922	cctx_get (pTHX)
673	{	923	{
674	coro_cctx *cctx;
675
676	if (cctx_first)	924	while (cctx_first)
677	{	925	{
678	cctx = cctx_first;	926	coro_cctx *cctx = cctx_first;
679	cctx_first = cctx->next;	927	cctx_first = cctx->next;
680	--cctx_idle;	928	--cctx_idle;
681	}	929
682	else	930	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
683	{	931	return cctx;
684	cctx = cctx_new ();	932
685	PL_op = PL_op->op_next;	933	cctx_destroy (cctx);
686	}	934	}
687		935
688	return cctx;	936	return cctx_new ();
689	}	937	}
690		938
691	static void	939	static void
692	cctx_put (coro_cctx *cctx)	940	cctx_put (coro_cctx *cctx)
693	{	941	{
…		…
696	{	944	{
697	coro_cctx *first = cctx_first;	945	coro_cctx *first = cctx_first;
698	cctx_first = first->next;	946	cctx_first = first->next;
699	--cctx_idle;	947	--cctx_idle;
700		948
701	assert (!first->inuse);
702	cctx_destroy (first);	949	cctx_destroy (first);
703	}	950	}
704		951
705	++cctx_idle;	952	++cctx_idle;
706	cctx->next = cctx_first;	953	cctx->next = cctx_first;
707	cctx_first = cctx;	954	cctx_first = cctx;
708	}	955	}
709		956
710	/* never call directly, always through the coro_state_transfer global variable */	957	/** coroutine switching *****************************************************/
		958
711	static void NOINLINE	959	static void NOINLINE
		960	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		961	{
		962	if (prev != next)
		963	{
		964	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		965	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		966
		967	if (next->flags & CF_RUNNING)
		968	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		969
		970	if (next->flags & CF_DESTROYED)
		971	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		972
		973	if (PL_lex_state != LEX_NOTPARSING)
		974	croak ("Coro::State::transfer called while parsing, but this is not supported");
		975	}
		976	}
		977
		978	/* always use the TRANSFER macro */
		979	static void NOINLINE
712	transfer (struct coro *prev, struct coro *next)	980	transfer (pTHX_ struct coro *prev, struct coro *next)
713	{	981	{
714	dSTACKLEVEL;	982	dSTACKLEVEL;
715		983
716	/* sometimes transfer is only called to set idle_sp */	984	/* sometimes transfer is only called to set idle_sp */
717	if (!next)	985	if (!next)
…		…
725		993
726	if (prev->flags & CF_NEW)	994	if (prev->flags & CF_NEW)
727	{	995	{
728	/* create a new empty context */	996	/* create a new empty context */
729	Newz (0, prev->cctx, 1, coro_cctx);	997	Newz (0, prev->cctx, 1, coro_cctx);
730	prev->cctx->inuse = 1;
731	prev->flags &= ~CF_NEW;	998	prev->flags &= ~CF_NEW;
732	prev->flags |= CF_RUNNING;	999	prev->flags |= CF_RUNNING;
733	}	1000	}
734
735	/*TODO: must not croak here */
736	if (!prev->flags & CF_RUNNING)
737	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
738
739	if (next->flags & CF_RUNNING)
740	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
741
742	if (next->flags & CF_DESTROYED)
743	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
744		1001
745	prev->flags &= ~CF_RUNNING;	1002	prev->flags &= ~CF_RUNNING;
746	next->flags |= CF_RUNNING;	1003	next->flags |= CF_RUNNING;
747		1004
748	LOCK;	1005	LOCK;
…		…
750	if (next->flags & CF_NEW)	1007	if (next->flags & CF_NEW)
751	{	1008	{
752	/* need to start coroutine */	1009	/* need to start coroutine */
753	next->flags &= ~CF_NEW;	1010	next->flags &= ~CF_NEW;
754	/* first get rid of the old state */	1011	/* first get rid of the old state */
755	save_perl (prev);	1012	save_perl (aTHX_ prev);
756	/* setup coroutine call */	1013	/* setup coroutine call */
757	setup_coro (next);	1014	setup_coro (aTHX_ next);
758	/* need a new stack */
759	assert (!next->cctx);
760	}	1015	}
761	else	1016	else
762	{	1017	{
763	/* coroutine already started */	1018	/* coroutine already started */
764	save_perl (prev);	1019	save_perl (aTHX_ prev);
765	load_perl (next);	1020	load_perl (aTHX_ next);
766	}	1021	}
767		1022
768	prev__cctx = prev->cctx;	1023	prev__cctx = prev->cctx;
769		1024
770	/* possibly "free" the cctx */	1025	/* possibly "free" the cctx */
771	if (prev__cctx->idle_sp == STACKLEVEL)	1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
772	{	1027	{
773	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1028	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
774	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1029	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
775		1030
776	prev->cctx = 0;	1031	prev->cctx = 0;
777		1032
778	cctx_put (prev__cctx);	1033	cctx_put (prev__cctx);
779	prev__cctx->inuse = 0;
780	}	1034	}
781		1035
		1036	++next->usecount;
		1037
782	if (!next->cctx)	1038	if (!next->cctx)
783	{
784	next->cctx = cctx_get ();	1039	next->cctx = cctx_get (aTHX);
785	assert (!next->cctx->inuse);
786	next->cctx->inuse = 1;
787	}
788		1040
789	if (prev__cctx != next->cctx)	1041	if (prev__cctx != next->cctx)
790	{	1042	{
791	prev__cctx->top_env = PL_top_env;	1043	prev__cctx->top_env = PL_top_env;
792	PL_top_env = next->cctx->top_env;	1044	PL_top_env = next->cctx->top_env;
793	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
794	}	1046	}
795		1047
796	free_coro_mortal ();	1048	free_coro_mortal (aTHX);
797	UNLOCK;	1049	UNLOCK;
798	}	1050	}
799	}	1051	}
800		1052
801	struct transfer_args	1053	struct transfer_args
802	{	1054	{
803	struct coro *prev, *next;	1055	struct coro *prev, *next;
804	};	1056	};
805		1057
806	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1058	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1059	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
		1060
		1061	/** high level stuff ********************************************************/
807		1062
808	static int	1063	static int
809	coro_state_destroy (struct coro *coro)	1064	coro_state_destroy (pTHX_ struct coro *coro)
810	{	1065	{
811	if (coro->flags & CF_DESTROYED)	1066	if (coro->flags & CF_DESTROYED)
812	return 0;	1067	return 0;
813		1068
814	coro->flags |= CF_DESTROYED;	1069	coro->flags |= CF_DESTROYED;
		1070
		1071	if (coro->flags & CF_READY)
		1072	{
		1073	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1074	/* alternative: look through all ready queues and remove the coro */
		1075	LOCK;
		1076	--coro_nready;
		1077	UNLOCK;
		1078	}
		1079	else
		1080	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
815		1081
816	if (coro->mainstack && coro->mainstack != main_mainstack)	1082	if (coro->mainstack && coro->mainstack != main_mainstack)
817	{	1083	{
		1084	struct coro temp;
		1085
818	assert (!(coro->flags & CF_RUNNING));	1086	assert (!(coro->flags & CF_RUNNING));
819		1087
820	struct coro temp;
821	Zero (&temp, 1, struct coro);	1088	Zero (&temp, 1, struct coro);
822	temp.save = CORO_SAVE_ALL;	1089	temp.save = CORO_SAVE_ALL;
823		1090
824	if (coro->flags & CF_RUNNING)	1091	if (coro->flags & CF_RUNNING)
825	croak ("FATAL: tried to destroy currently running coroutine");	1092	croak ("FATAL: tried to destroy currently running coroutine");
826		1093
827	save_perl (&temp);	1094	save_perl (aTHX_ &temp);
828	load_perl (coro);	1095	load_perl (aTHX_ coro);
829		1096
830	coro_destroy_stacks ();	1097	coro_destroy_stacks (aTHX);
831		1098
832	load_perl (&temp); /* this will get rid of defsv etc.. */	1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
833		1100
834	coro->mainstack = 0;	1101	coro->mainstack = 0;
835	}	1102	}
836		1103
837	cctx_destroy (coro->cctx);	1104	cctx_destroy (coro->cctx);
838	SvREFCNT_dec (coro->args);	1105	SvREFCNT_dec (coro->args);
839		1106
		1107	if (coro->next) coro->next->prev = coro->prev;
		1108	if (coro->prev) coro->prev->next = coro->next;
		1109	if (coro == coro_first) coro_first = coro->next;
		1110
840	return 1;	1111	return 1;
841	}	1112	}
842		1113
843	static int	1114	static int
844	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1115	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
845	{	1116	{
846	struct coro *coro = (struct coro *)mg->mg_ptr;	1117	struct coro *coro = (struct coro *)mg->mg_ptr;
847	mg->mg_ptr = 0;	1118	mg->mg_ptr = 0;
848		1119
		1120	coro->hv = 0;
		1121
849	if (--coro->refcnt < 0)	1122	if (--coro->refcnt < 0)
850	{	1123	{
851	coro_state_destroy (coro);	1124	coro_state_destroy (aTHX_ coro);
852	Safefree (coro);	1125	Safefree (coro);
853	}	1126	}
854		1127
855	return 0;	1128	return 0;
856	}	1129	}
…		…
874	#else	1147	#else
875	# define MGf_DUP 0	1148	# define MGf_DUP 0
876	#endif	1149	#endif
877	};	1150	};
878		1151
879	static struct coro *
880	SvSTATE (SV *coro)
881	{
882	HV *stash;
883	MAGIC *mg;
884
885	if (SvROK (coro))
886	coro = SvRV (coro);
887
888	stash = SvSTASH (coro);
889	if (stash != coro_stash && stash != coro_state_stash)
890	{
891	/* very slow, but rare, check */
892	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
893	croak ("Coro::State object required");
894	}
895
896	mg = SvMAGIC (coro);
897	assert (mg->mg_type == PERL_MAGIC_ext);
898	return (struct coro *)mg->mg_ptr;
899	}
900
901	static void	1152	static void
902	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1153	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
903	{	1154	{
904	ta->prev = SvSTATE (prev_sv);	1155	ta->prev = SvSTATE (prev_sv);
905	ta->next = SvSTATE (next_sv);	1156	ta->next = SvSTATE (next_sv);
		1157	TRANSFER_CHECK (*ta);
906	}	1158	}
907		1159
908	static void	1160	static void
909	api_transfer (SV *prev_sv, SV *next_sv)	1161	api_transfer (SV *prev_sv, SV *next_sv)
910	{	1162	{
		1163	dTHX;
911	struct transfer_args ta;	1164	struct transfer_args ta;
912		1165
913	prepare_transfer (&ta, prev_sv, next_sv);	1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
914	TRANSFER (ta);	1167	TRANSFER (ta);
915	}	1168	}
916		1169
917	static int	1170	static int
918	api_save (SV *coro_sv, int new_save)	1171	api_save (SV *coro_sv, int new_save)
919	{	1172	{
		1173	dTHX;
920	struct coro *coro = SvSTATE (coro_sv);	1174	struct coro *coro = SvSTATE (coro_sv);
921	int old_save = coro->save;	1175	int old_save = coro->save;
922		1176
923	if (new_save >= 0)	1177	if (new_save >= 0)
924	coro->save = new_save;	1178	coro->save = new_save;
…		…
926	return old_save;	1180	return old_save;
927	}	1181	}
928		1182
929	/** Coro ********************************************************************/	1183	/** Coro ********************************************************************/
930		1184
931	#define PRIO_MAX 3
932	#define PRIO_HIGH 1
933	#define PRIO_NORMAL 0
934	#define PRIO_LOW -1
935	#define PRIO_IDLE -3
936	#define PRIO_MIN -4
937
938	/* for Coro.pm */
939	static SV *coro_current;
940	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
941	static int coro_nready;
942
943	static void	1185	static void
944	coro_enq (SV *coro_sv)	1186	coro_enq (pTHX_ SV *coro_sv)
945	{	1187	{
946	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
947	coro_nready++;
948	}	1189	}
949		1190
950	static SV *	1191	static SV *
951	coro_deq (int min_prio)	1192	coro_deq (pTHX_ int min_prio)
952	{	1193	{
953	int prio = PRIO_MAX - PRIO_MIN;	1194	int prio = PRIO_MAX - PRIO_MIN;
954		1195
955	min_prio -= PRIO_MIN;	1196	min_prio -= PRIO_MIN;
956	if (min_prio < 0)	1197	if (min_prio < 0)
957	min_prio = 0;	1198	min_prio = 0;
958		1199
959	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1200	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
960	if (AvFILLp (coro_ready [prio]) >= 0)	1201	if (AvFILLp (coro_ready [prio]) >= 0)
961	{
962	coro_nready--;
963	return av_shift (coro_ready [prio]);	1202	return av_shift (coro_ready [prio]);
964	}
965		1203
966	return 0;	1204	return 0;
967	}	1205	}
968		1206
969	static int	1207	static int
970	api_ready (SV *coro_sv)	1208	api_ready (SV *coro_sv)
971	{	1209	{
		1210	dTHX;
972	struct coro *coro;	1211	struct coro *coro;
973		1212
974	if (SvROK (coro_sv))	1213	if (SvROK (coro_sv))
975	coro_sv = SvRV (coro_sv);	1214	coro_sv = SvRV (coro_sv);
976		1215
…		…
980	return 0;	1219	return 0;
981		1220
982	coro->flags |= CF_READY;	1221	coro->flags |= CF_READY;
983		1222
984	LOCK;	1223	LOCK;
985	coro_enq (SvREFCNT_inc (coro_sv));	1224	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1225	++coro_nready;
986	UNLOCK;	1226	UNLOCK;
987		1227
988	return 1;	1228	return 1;
989	}	1229	}
990		1230
991	static int	1231	static int
992	api_is_ready (SV *coro_sv)	1232	api_is_ready (SV *coro_sv)
993	{	1233	{
		1234	dTHX;
994	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1235	return !!(SvSTATE (coro_sv)->flags & CF_READY);
995	}	1236	}
996		1237
997	static void	1238	static void
998	prepare_schedule (struct transfer_args *ta)	1239	prepare_schedule (pTHX_ struct transfer_args *ta)
999	{	1240	{
1000	SV *prev_sv, *next_sv;	1241	SV *prev_sv, *next_sv;
1001		1242
1002	for (;;)	1243	for (;;)
1003	{	1244	{
1004	LOCK;	1245	LOCK;
1005	next_sv = coro_deq (PRIO_MIN);	1246	next_sv = coro_deq (aTHX_ PRIO_MIN);
1006	UNLOCK;
1007		1247
1008	/* nothing to schedule: call the idle handler */	1248	/* nothing to schedule: call the idle handler */
1009	if (!next_sv)	1249	if (!next_sv)
1010	{	1250	{
1011	dSP;	1251	dSP;
		1252	UNLOCK;
1012		1253
1013	ENTER;	1254	ENTER;
1014	SAVETMPS;	1255	SAVETMPS;
1015		1256
1016	PUSHMARK (SP);	1257	PUSHMARK (SP);
…		…
1025	ta->next = SvSTATE (next_sv);	1266	ta->next = SvSTATE (next_sv);
1026		1267
1027	/* cannot transfer to destroyed coros, skip and look for next */	1268	/* cannot transfer to destroyed coros, skip and look for next */
1028	if (ta->next->flags & CF_DESTROYED)	1269	if (ta->next->flags & CF_DESTROYED)
1029	{	1270	{
		1271	UNLOCK;
1030	SvREFCNT_dec (next_sv);	1272	SvREFCNT_dec (next_sv);
		1273	/* coro_nready is already taken care of by destroy */
1031	continue;	1274	continue;
1032	}	1275	}
1033		1276
		1277	--coro_nready;
		1278	UNLOCK;
1034	break;	1279	break;
1035	}	1280	}
1036		1281
1037	/* free this only after the transfer */	1282	/* free this only after the transfer */
1038	prev_sv = SvRV (coro_current);	1283	prev_sv = SvRV (coro_current);
1039	SvRV_set (coro_current, next_sv);
1040	ta->prev = SvSTATE (prev_sv);	1284	ta->prev = SvSTATE (prev_sv);
1041		1285	TRANSFER_CHECK (*ta);
1042	assert (ta->next->flags & CF_READY);	1286	assert (ta->next->flags & CF_READY);
1043	ta->next->flags &= ~CF_READY;	1287	ta->next->flags &= ~CF_READY;
		1288	SvRV_set (coro_current, next_sv);
1044		1289
1045	LOCK;	1290	LOCK;
1046	free_coro_mortal ();	1291	free_coro_mortal (aTHX);
1047	coro_mortal = prev_sv;	1292	coro_mortal = prev_sv;
1048	UNLOCK;	1293	UNLOCK;
1049	}	1294	}
1050		1295
1051	static void	1296	static void
1052	prepare_cede (struct transfer_args *ta)	1297	prepare_cede (pTHX_ struct transfer_args *ta)
1053	{	1298	{
1054	api_ready (coro_current);	1299	api_ready (coro_current);
1055	prepare_schedule (ta);	1300	prepare_schedule (aTHX_ ta);
1056	}	1301	}
1057		1302
1058	static int	1303	static int
1059	prepare_cede_notself (struct transfer_args *ta)	1304	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1060	{	1305	{
1061	if (coro_nready)	1306	if (coro_nready)
1062	{	1307	{
1063	SV *prev = SvRV (coro_current);	1308	SV *prev = SvRV (coro_current);
1064	prepare_schedule (ta);	1309	prepare_schedule (aTHX_ ta);
1065	api_ready (prev);	1310	api_ready (prev);
1066	return 1;	1311	return 1;
1067	}	1312	}
1068	else	1313	else
1069	return 0;	1314	return 0;
1070	}	1315	}
1071		1316
1072	static void	1317	static void
1073	api_schedule (void)	1318	api_schedule (void)
1074	{	1319	{
		1320	dTHX;
1075	struct transfer_args ta;	1321	struct transfer_args ta;
1076		1322
1077	prepare_schedule (&ta);	1323	prepare_schedule (aTHX_ &ta);
1078	TRANSFER (ta);	1324	TRANSFER (ta);
1079	}	1325	}
1080		1326
1081	static int	1327	static int
1082	api_cede (void)	1328	api_cede (void)
1083	{	1329	{
		1330	dTHX;
1084	struct transfer_args ta;	1331	struct transfer_args ta;
1085		1332
1086	prepare_cede (&ta);	1333	prepare_cede (aTHX_ &ta);
1087		1334
1088	if (ta.prev != ta.next)	1335	if (ta.prev != ta.next)
1089	{	1336	{
1090	TRANSFER (ta);	1337	TRANSFER (ta);
1091	return 1;	1338	return 1;
…		…
1095	}	1342	}
1096		1343
1097	static int	1344	static int
1098	api_cede_notself (void)	1345	api_cede_notself (void)
1099	{	1346	{
		1347	dTHX;
1100	struct transfer_args ta;	1348	struct transfer_args ta;
1101		1349
1102	if (prepare_cede_notself (&ta))	1350	if (prepare_cede_notself (aTHX_ &ta))
1103	{	1351	{
1104	TRANSFER (ta);	1352	TRANSFER (ta);
1105	return 1;	1353	return 1;
1106	}	1354	}
1107	else	1355	else
1108	return 0;	1356	return 0;
1109	}	1357	}
1110		1358
		1359	static void
		1360	api_trace (struct coro *coro, int flags)
		1361	{
		1362	dTHX;
		1363
		1364	if (flags & CC_TRACE)
		1365	{
		1366	if (!coro->cctx)
		1367	coro->cctx = cctx_new ();
		1368	else if (!(coro->cctx->flags & CC_TRACE))
		1369	croak ("cannot enable tracing on coroutine with custom stack");
		1370
		1371	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1372	}
		1373	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1374	{
		1375	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1376
		1377	if (coro->flags & CF_RUNNING)
		1378	PL_runops = RUNOPS_DEFAULT;
		1379	else
		1380	coro->runops = RUNOPS_DEFAULT;
		1381	}
		1382	}
		1383
1111	MODULE = Coro::State PACKAGE = Coro::State	1384	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1112		1385
1113	PROTOTYPES: DISABLE	1386	PROTOTYPES: DISABLE
1114		1387
1115	BOOT:	1388	BOOT:
1116	{	1389	{
…		…
1118	MUTEX_INIT (&coro_mutex);	1391	MUTEX_INIT (&coro_mutex);
1119	#endif	1392	#endif
1120	BOOT_PAGESIZE;	1393	BOOT_PAGESIZE;
1121		1394
1122	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1395	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1396
		1397	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1400	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1123		1401
1124	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1402	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1125	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1403	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1126	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1404	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1127	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1405	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1406	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1407	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1128	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1408	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1129		1409
1130	main_mainstack = PL_mainstack;	1410	main_mainstack = PL_mainstack;
		1411	main_top_env = PL_top_env;
		1412
		1413	while (main_top_env->je_prev)
		1414	main_top_env = main_top_env->je_prev;
1131		1415
1132	coroapi.ver = CORO_API_VERSION;	1416	coroapi.ver = CORO_API_VERSION;
1133	coroapi.transfer = api_transfer;	1417	coroapi.transfer = api_transfer;
1134		1418
1135	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1419	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1143	HV *hv;	1427	HV *hv;
1144	int i;	1428	int i;
1145		1429
1146	Newz (0, coro, 1, struct coro);	1430	Newz (0, coro, 1, struct coro);
1147	coro->args = newAV ();	1431	coro->args = newAV ();
1148	coro->save = CORO_SAVE_ALL;	1432	coro->save = CORO_SAVE_DEF;
1149	coro->flags = CF_NEW;	1433	coro->flags = CF_NEW;
1150		1434
		1435	if (coro_first) coro_first->prev = coro;
		1436	coro->next = coro_first;
		1437	coro_first = coro;
		1438
1151	hv = newHV ();	1439	coro->hv = hv = newHV ();
1152	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1440	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1153	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1441	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1154		1442
1155	for (i = 1; i < items; i++)	1443	for (i = 1; i < items; i++)
1156	av_push (coro->args, newSVsv (ST (i)));	1444	av_push (coro->args, newSVsv (ST (i)));
…		…
1160		1448
1161	int	1449	int
1162	save (SV *coro, int new_save = -1)	1450	save (SV *coro, int new_save = -1)
1163	CODE:	1451	CODE:
1164	RETVAL = api_save (coro, new_save);	1452	RETVAL = api_save (coro, new_save);
		1453	OUTPUT:
		1454	RETVAL
		1455
		1456	int
		1457	save_also (SV *coro_sv, int save_also)
		1458	CODE:
		1459	{
		1460	struct coro *coro = SvSTATE (coro_sv);
		1461	RETVAL = coro->save;
		1462	coro->save |= save_also;
		1463	}
1165	OUTPUT:	1464	OUTPUT:
1166	RETVAL	1465	RETVAL
1167		1466
1168	void	1467	void
1169	_set_stacklevel (...)	1468	_set_stacklevel (...)
…		…
1185		1484
1186	case 1:	1485	case 1:
1187	if (items != 2)	1486	if (items != 2)
1188	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1487	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1189		1488
1190	prepare_transfer (&ta, ST (0), ST (1));	1489	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1191	break;	1490	break;
1192		1491
1193	case 2:	1492	case 2:
1194	prepare_schedule (&ta);	1493	prepare_schedule (aTHX_ &ta);
1195	break;	1494	break;
1196		1495
1197	case 3:	1496	case 3:
1198	prepare_cede (&ta);	1497	prepare_cede (aTHX_ &ta);
1199	break;	1498	break;
1200		1499
1201	case 4:	1500	case 4:
1202	if (!prepare_cede_notself (&ta))	1501	if (!prepare_cede_notself (aTHX_ &ta))
1203	XSRETURN_EMPTY;	1502	XSRETURN_EMPTY;
1204		1503
1205	break;	1504	break;
1206	}	1505	}
1207		1506
…		…
1213	}	1512	}
1214		1513
1215	bool	1514	bool
1216	_destroy (SV *coro_sv)	1515	_destroy (SV *coro_sv)
1217	CODE:	1516	CODE:
1218	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1517	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1219	OUTPUT:	1518	OUTPUT:
1220	RETVAL	1519	RETVAL
1221		1520
1222	void	1521	void
1223	_exit (code)	1522	_exit (code)
…		…
1225	PROTOTYPE: $	1524	PROTOTYPE: $
1226	CODE:	1525	CODE:
1227	_exit (code);	1526	_exit (code);
1228		1527
1229	int	1528	int
		1529	cctx_stacksize (int new_stacksize = 0)
		1530	CODE:
		1531	RETVAL = coro_stacksize;
		1532	if (new_stacksize)
		1533	coro_stacksize = new_stacksize;
		1534	OUTPUT:
		1535	RETVAL
		1536
		1537	int
1230	cctx_count ()	1538	cctx_count ()
1231	CODE:	1539	CODE:
1232	RETVAL = cctx_count;	1540	RETVAL = cctx_count;
1233	OUTPUT:	1541	OUTPUT:
1234	RETVAL	1542	RETVAL
…		…
1238	CODE:	1546	CODE:
1239	RETVAL = cctx_idle;	1547	RETVAL = cctx_idle;
1240	OUTPUT:	1548	OUTPUT:
1241	RETVAL	1549	RETVAL
1242		1550
		1551	void
		1552	list ()
		1553	PPCODE:
		1554	{
		1555	struct coro *coro;
		1556	for (coro = coro_first; coro; coro = coro->next)
		1557	if (coro->hv)
		1558	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1559	}
		1560
		1561	void
		1562	call (Coro::State coro, SV *coderef)
		1563	ALIAS:
		1564	eval = 1
		1565	CODE:
		1566	{
		1567	if (coro->mainstack)
		1568	{
		1569	struct coro temp;
		1570	Zero (&temp, 1, struct coro);
		1571	temp.save = CORO_SAVE_ALL;
		1572
		1573	if (!(coro->flags & CF_RUNNING))
		1574	{
		1575	save_perl (aTHX_ &temp);
		1576	load_perl (aTHX_ coro);
		1577	}
		1578
		1579	{
		1580	dSP;
		1581	ENTER;
		1582	SAVETMPS;
		1583	PUSHMARK (SP);
		1584	PUTBACK;
		1585	if (ix)
		1586	eval_sv (coderef, 0);
		1587	else
		1588	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1589	SPAGAIN;
		1590	FREETMPS;
		1591	LEAVE;
		1592	PUTBACK;
		1593	}
		1594
		1595	if (!(coro->flags & CF_RUNNING))
		1596	{
		1597	save_perl (aTHX_ coro);
		1598	load_perl (aTHX_ &temp);
		1599	}
		1600	}
		1601	}
		1602
		1603	SV *
		1604	is_ready (Coro::State coro)
		1605	PROTOTYPE: $
		1606	ALIAS:
		1607	is_ready = CF_READY
		1608	is_running = CF_RUNNING
		1609	is_new = CF_NEW
		1610	is_destroyed = CF_DESTROYED
		1611	CODE:
		1612	RETVAL = boolSV (coro->flags & ix);
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	void
		1617	api_trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1618
		1619	SV *
		1620	has_stack (Coro::State coro)
		1621	PROTOTYPE: $
		1622	CODE:
		1623	RETVAL = boolSV (!!coro->cctx);
		1624	OUTPUT:
		1625	RETVAL
		1626
		1627	int
		1628	is_traced (Coro::State coro)
		1629	PROTOTYPE: $
		1630	CODE:
		1631	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1632	OUTPUT:
		1633	RETVAL
		1634
		1635	IV
		1636	rss (Coro::State coro)
		1637	PROTOTYPE: $
		1638	ALIAS:
		1639	usecount = 1
		1640	CODE:
		1641	switch (ix)
		1642	{
		1643	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1644	case 1: RETVAL = coro->usecount; break;
		1645	}
		1646	OUTPUT:
		1647	RETVAL
		1648
		1649
1243	MODULE = Coro::State PACKAGE = Coro	1650	MODULE = Coro::State PACKAGE = Coro
1244		1651
1245	BOOT:	1652	BOOT:
1246	{	1653	{
1247	int i;	1654	int i;
		1655
		1656	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1657	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1658	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1659
		1660	coro_current = get_sv ("Coro::current", FALSE);
		1661	SvREADONLY_on (coro_current);
1248		1662
1249	coro_stash = gv_stashpv ("Coro", TRUE);	1663	coro_stash = gv_stashpv ("Coro", TRUE);
1250		1664
1251	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1665	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1252	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1666	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1253	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1667	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1254	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1668	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1255	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1669	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1256	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1670	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1257
1258	coro_current = get_sv ("Coro::current", FALSE);
1259	SvREADONLY_on (coro_current);
1260		1671
1261	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1672	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1262	coro_ready[i] = newAV ();	1673	coro_ready[i] = newAV ();
1263		1674
1264	{	1675	{
…		…
1314	CODE:	1725	CODE:
1315	RETVAL = boolSV (api_ready (self));	1726	RETVAL = boolSV (api_ready (self));
1316	OUTPUT:	1727	OUTPUT:
1317	RETVAL	1728	RETVAL
1318		1729
1319	SV *
1320	is_ready (SV *self)
1321	PROTOTYPE: $
1322	CODE:
1323	RETVAL = boolSV (api_is_ready (self));
1324	OUTPUT:
1325	RETVAL
1326
1327	int	1730	int
1328	nready (...)	1731	nready (...)
1329	PROTOTYPE:	1732	PROTOTYPE:
1330	CODE:	1733	CODE:
1331	RETVAL = coro_nready;	1734	RETVAL = coro_nready;
1332	OUTPUT:	1735	OUTPUT:
1333	RETVAL	1736	RETVAL
1334		1737
		1738	# for async_pool speedup
		1739	void
		1740	_pool_1 (SV *cb)
		1741	CODE:
		1742	{
		1743	int i, len;
		1744	HV *hv = (HV *)SvRV (coro_current);
		1745	AV *defav = GvAV (PL_defgv);
		1746	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1747	AV *invoke_av;
		1748
		1749	if (!invoke)
		1750	croak ("\3terminate\2\n");
		1751
		1752	hv_store (hv, "desc", sizeof ("desc") - 1,
		1753	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1754
		1755	invoke_av = (AV *)SvRV (invoke);
		1756	len = av_len (invoke_av);
		1757
		1758	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1759
		1760	if (len > 0)
		1761	{
		1762	av_fill (defav, len - 1);
		1763	for (i = 0; i < len; ++i)
		1764	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1765	}
		1766
		1767	SvREFCNT_dec (invoke);
		1768	}
		1769
		1770	void
		1771	_pool_2 (SV *cb)
		1772	CODE:
		1773	{
		1774	struct coro *coro = SvSTATE (coro_current);
		1775
		1776	sv_setsv (cb, &PL_sv_undef);
		1777
		1778	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1779	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1780	croak ("\3terminate\2\n");
		1781
		1782	av_clear (GvAV (PL_defgv));
		1783	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1784	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1785	coro->save = CORO_SAVE_DEF;
		1786	coro->prio = 0;
		1787
		1788	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1789	api_trace (coro, 0);
		1790
		1791	av_push (av_async_pool, newSVsv (coro_current));
		1792	}
		1793
		1794
1335	MODULE = Coro::State PACKAGE = Coro::AIO	1795	MODULE = Coro::State PACKAGE = Coro::AIO
1336		1796
1337	SV *	1797	SV *
1338	_get_state ()	1798	_get_state ()
1339	CODE:	1799	CODE:

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