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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.138 by root, Sun Jan 14 20:49:45 2007 UTC vs.
Revision 1.183 by root, Wed Oct 3 19:19:06 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	static GV *irsgv; /* $/ */
		138
		139	/* async_pool helper stuff */
		140	static SV *sv_pool_rss;
		141	static SV *sv_pool_size;
		142	static AV *av_async_pool;
		143
131	static struct coro_cctx *cctx_first;	144	static struct coro_cctx *cctx_first;
132	static int cctx_count, cctx_idle;	145	static int cctx_count, cctx_idle;
		146
		147	enum {
		148	CC_MAPPED = 0x01,
		149	CC_NOREUSE = 0x02, /* throw this away after tracing */
		150	CC_TRACE = 0x04,
		151	CC_TRACE_SUB = 0x08, /* trace sub calls */
		152	CC_TRACE_LINE = 0x10, /* trace each statement */
		153	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		154	};
133		155
134	/* this is a structure representing a c-level coroutine */	156	/* this is a structure representing a c-level coroutine */
135	typedef struct coro_cctx {	157	typedef struct coro_cctx {
136	struct coro_cctx *next;	158	struct coro_cctx *next;
137		159
138	/* the stack */	160	/* the stack */
139	void *sptr;	161	void *sptr;
140	long ssize; /* positive == mmap, otherwise malloc */	162	size_t ssize;
141		163
142	/* cpu state */	164	/* cpu state */
143	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	165	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 */	166	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
145	JMPENV *top_env;	167	JMPENV *top_env;
146	coro_context cctx;	168	coro_context cctx;
147		169
148	int inuse;
149
150	#if USE_VALGRIND	170	#if CORO_USE_VALGRIND
151	int valgrind_id;	171	int valgrind_id;
152	#endif	172	#endif
		173	unsigned char flags;
153	} coro_cctx;	174	} coro_cctx;
154		175
155	enum {	176	enum {
156	CF_RUNNING = 0x0001, /* coroutine is running */	177	CF_RUNNING = 0x0001, /* coroutine is running */
157	CF_READY = 0x0002, /* coroutine is ready */	178	CF_READY = 0x0002, /* coroutine is ready */
…		…
165	coro_cctx *cctx;	186	coro_cctx *cctx;
166		187
167	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
168	AV *args;	189	AV *args;
169	int refcnt;	190	int refcnt;
170	int save; /* CORO_SAVE flags */
171	int flags; /* CF_ flags */	191	int flags; /* CF_ flags */
172		192
173	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
174	AV *defav; /* @_ */	194	AV *defav; /* @_ */
175	SV *defsv; /* $_ */	195	SV *defsv; /* $_ */
176	SV *errsv; /* $@ */	196	SV *errsv; /* $@ */
		197	GV *deffh; /* default filehandle */
177	SV *irssv; /* $/ */	198	SV *irssv; /* $/ */
178	SV *irssv_sv; /* real $/ cache */	199	SV *irssv_sv; /* real $/ cache */
179		200
180	#define VAR(name,type) type name;	201	#define VAR(name,type) type name;
181	# include "state.h"	202	# include "state.h"
182	#undef VAR	203	#undef VAR
183		204
		205	/* statistics */
		206	int usecount; /* number of transfers to this coro */
		207
184	/* coro process data */	208	/* coro process data */
185	int prio;	209	int prio;
		210	//SV *throw;
		211
		212	/* async_pool */
		213	GV *asp_deffh;
		214
		215	/* linked list */
		216	struct coro *next, *prev;
		217	HV *hv; /* the perl hash associated with this coro, if any */
186	};	218	};
187		219
188	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
189	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
190		222
…		…
199		231
200	/* for Coro.pm */	232	/* for Coro.pm */
201	static SV *coro_current;	233	static SV *coro_current;
202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
203	static int coro_nready;	235	static int coro_nready;
		236	static struct coro *coro_first;
204		237
205	/** lowlevel stuff **********************************************************/	238	/** lowlevel stuff **********************************************************/
206		239
207	static AV *	240	static AV *
208	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
209	{	242	{
210	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
211	AV *newpadlist, *newpad;	244	AV *newpadlist, *newpad;
212		245
213	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
225		258
226	return newpadlist;	259	return newpadlist;
227	}	260	}
228		261
229	static void	262	static void
230	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
231	{	264	{
232	/* may be during global destruction */	265	/* may be during global destruction */
233	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
234	{	267	{
235	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
256	AV *padlist;	289	AV *padlist;
257	AV *av = (AV *)mg->mg_obj;	290	AV *av = (AV *)mg->mg_obj;
258		291
259	/* casting is fun. */	292	/* casting is fun. */
260	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	293	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
261	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
262		295
263	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
264		297
265	return 0;	298	return 0;
266	}	299	}
…		…
274	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
275	? SvMAGIC (cv) \	308	? SvMAGIC (cv) \
276	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
277	: 0	310	: 0
278		311
		312	static struct coro *
		313	SvSTATE_ (pTHX_ SV *coro)
		314	{
		315	HV *stash;
		316	MAGIC *mg;
		317
		318	if (SvROK (coro))
		319	coro = SvRV (coro);
		320
		321	if (SvTYPE (coro) != SVt_PVHV)
		322	croak ("Coro::State object required");
		323
		324	stash = SvSTASH (coro);
		325	if (stash != coro_stash && stash != coro_state_stash)
		326	{
		327	/* very slow, but rare, check */
		328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		329	croak ("Coro::State object required");
		330	}
		331
		332	mg = CORO_MAGIC (coro);
		333	return (struct coro *)mg->mg_ptr;
		334	}
		335
		336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		337
279	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
280	static void	339	static void
281	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
282	{	341	{
283	MAGIC *mg = CORO_MAGIC (cv);	342	MAGIC *mg = CORO_MAGIC (cv);
284	AV *av;	343	AV *av;
285		344
286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
288	else	347	else
289	{	348	{
290	#if PREFER_PERL_FUNCTIONS	349	#if CORO_PREFER_PERL_FUNCTIONS
291	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
292	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
293	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
294	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
295	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
296	#else	355	#else
297	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
298	#endif	357	#endif
299	}	358	}
300	}	359	}
301		360
302	static void	361	static void
303	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
304	{	363	{
305	MAGIC *mg = CORO_MAGIC (cv);	364	MAGIC *mg = CORO_MAGIC (cv);
306	AV *av;	365	AV *av;
307		366
308	if (!mg)	367	if (!mg)
…		…
321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
322	}	381	}
323		382
324	/** load & save, init *******************************************************/	383	/** load & save, init *******************************************************/
325		384
326	#define SB do {
327	#define SE } while (0)
328
329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
330
331	static void	385	static void
332	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
333	{	387	{
334	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
335	# include "state.h"	389	# include "state.h"
336	#undef VAR	390	#undef VAR
337		391
338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	GvSV (PL_defgv) = c->defsv;
339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	GvAV (PL_defgv) = c->defav;
340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	GvSV (PL_errgv) = c->errsv;
341	if (c->irssv)	395	PL_defoutgv = c->deffh;
342	{	396	PL_rs = c->irssv;
343	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	397	GvSV (irsgv) = c->irssv_sv;
344	SvREFCNT_dec (c->irssv);
345	else
346	{
347	REPLACE_SV (PL_rs, c->irssv);
348	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
349	sv_setsv (c->irssv_sv, PL_rs);
350	}
351	}
352		398
353	{	399	{
354	dSP;	400	dSP;
355	CV *cv;	401	CV *cv;
356		402
357	/* now do the ugly restore mess */	403	/* now do the ugly restore mess */
358	while ((cv = (CV *)POPs))	404	while ((cv = (CV *)POPs))
359	{	405	{
360	put_padlist (cv); /* mark this padlist as available */	406	put_padlist (aTHX_ cv); /* mark this padlist as available */
361	CvDEPTH (cv) = PTR2IV (POPs);	407	CvDEPTH (cv) = PTR2IV (POPs);
362	CvPADLIST (cv) = (AV *)POPs;	408	CvPADLIST (cv) = (AV *)POPs;
363	}	409	}
364		410
365	PUTBACK;	411	PUTBACK;
366	}	412	}
367	}	413	}
368		414
369	static void	415	static void
370	save_perl (Coro__State c)	416	save_perl (pTHX_ Coro__State c)
371	{	417	{
372	{	418	{
373	dSP;	419	dSP;
374	I32 cxix = cxstack_ix;	420	I32 cxix = cxstack_ix;
375	PERL_CONTEXT *ccstk = cxstack;	421	PERL_CONTEXT *ccstk = cxstack;
…		…
378	/*	424	/*
379	* the worst thing you can imagine happens first - we have to save	425	* the worst thing you can imagine happens first - we have to save
380	* (and reinitialize) all cv's in the whole callchain :(	426	* (and reinitialize) all cv's in the whole callchain :(
381	*/	427	*/
382		428
383	EXTEND (SP, 3 + 1);
384	PUSHs (Nullsv);	429	XPUSHs (Nullsv);
385	/* this loop was inspired by pp_caller */	430	/* this loop was inspired by pp_caller */
386	for (;;)	431	for (;;)
387	{	432	{
388	while (cxix >= 0)	433	while (cxix >= 0)
389	{	434	{
390	PERL_CONTEXT *cx = &ccstk[cxix--];	435	PERL_CONTEXT *cx = &ccstk[cxix--];
391		436
392	if (CxTYPE (cx) == CXt_SUB)	437	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
393	{	438	{
394	CV *cv = cx->blk_sub.cv;	439	CV *cv = cx->blk_sub.cv;
395		440
396	if (CvDEPTH (cv))	441	if (CvDEPTH (cv))
397	{	442	{
…		…
399	PUSHs ((SV *)CvPADLIST (cv));	444	PUSHs ((SV *)CvPADLIST (cv));
400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	445	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
401	PUSHs ((SV *)cv);	446	PUSHs ((SV *)cv);
402		447
403	CvDEPTH (cv) = 0;	448	CvDEPTH (cv) = 0;
404	get_padlist (cv);	449	get_padlist (aTHX_ cv);
405	}	450	}
406	}	451	}
407	}	452	}
408		453
409	if (top_si->si_type == PERLSI_MAIN)	454	if (top_si->si_type == PERLSI_MAIN)
410	break;	455	break;
411		456
412	top_si = top_si->si_prev;	457	top_si = top_si->si_prev;
413	ccstk = top_si->si_cxstack;	458	ccstk = top_si->si_cxstack;
414	cxix = top_si->si_cxix;	459	cxix = top_si->si_cxix;
415	}	460	}
416		461
417	PUTBACK;	462	PUTBACK;
418	}	463	}
419		464
420	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	465	c->defav = GvAV (PL_defgv);
421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	466	c->defsv = DEFSV;
422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	467	c->errsv = ERRSV;
423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	468	c->deffh = PL_defoutgv;
		469	c->irssv = PL_rs;
		470	c->irssv_sv = GvSV (irsgv);
424		471
425	#define VAR(name,type)c->name = PL_ ## name;	472	#define VAR(name,type)c->name = PL_ ## name;
426	# include "state.h"	473	# include "state.h"
427	#undef VAR	474	#undef VAR
428	}	475	}
…		…
431	* allocate various perl stacks. This is an exact copy	478	* allocate various perl stacks. This is an exact copy
432	* of perl.c:init_stacks, except that it uses less memory	479	* of perl.c:init_stacks, except that it uses less memory
433	* on the (sometimes correct) assumption that coroutines do	480	* on the (sometimes correct) assumption that coroutines do
434	* not usually need a lot of stackspace.	481	* not usually need a lot of stackspace.
435	*/	482	*/
436	#if PREFER_PERL_FUNCTIONS	483	#if CORO_PREFER_PERL_FUNCTIONS
437	# define coro_init_stacks init_stacks	484	# define coro_init_stacks init_stacks
438	#else	485	#else
439	static void	486	static void
440	coro_init_stacks ()	487	coro_init_stacks (pTHX)
441	{	488	{
442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	489	PL_curstackinfo = new_stackinfo(64, 6);
443	PL_curstackinfo->si_type = PERLSI_MAIN;	490	PL_curstackinfo->si_type = PERLSI_MAIN;
444	PL_curstack = PL_curstackinfo->si_stack;	491	PL_curstack = PL_curstackinfo->si_stack;
445	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	492	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
446		493
447	PL_stack_base = AvARRAY(PL_curstack);	494	PL_stack_base = AvARRAY(PL_curstack);
448	PL_stack_sp = PL_stack_base;	495	PL_stack_sp = PL_stack_base;
449	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	496	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
450		497
451	New(50,PL_tmps_stack,128,SV*);	498	New(50,PL_tmps_stack,64,SV*);
452	PL_tmps_floor = -1;	499	PL_tmps_floor = -1;
453	PL_tmps_ix = -1;	500	PL_tmps_ix = -1;
454	PL_tmps_max = 128;	501	PL_tmps_max = 64;
455		502
456	New(54,PL_markstack,32,I32);	503	New(54,PL_markstack,16,I32);
457	PL_markstack_ptr = PL_markstack;	504	PL_markstack_ptr = PL_markstack;
458	PL_markstack_max = PL_markstack + 32;	505	PL_markstack_max = PL_markstack + 16;
459		506
460	#ifdef SET_MARK_OFFSET	507	#ifdef SET_MARK_OFFSET
461	SET_MARK_OFFSET;	508	SET_MARK_OFFSET;
462	#endif	509	#endif
463		510
464	New(54,PL_scopestack,32,I32);	511	New(54,PL_scopestack,16,I32);
465	PL_scopestack_ix = 0;	512	PL_scopestack_ix = 0;
466	PL_scopestack_max = 32;	513	PL_scopestack_max = 16;
467		514
468	New(54,PL_savestack,64,ANY);	515	New(54,PL_savestack,64,ANY);
469	PL_savestack_ix = 0;	516	PL_savestack_ix = 0;
470	PL_savestack_max = 64;	517	PL_savestack_max = 64;
471		518
472	#if !PERL_VERSION_ATLEAST (5,9,0)	519	#if !PERL_VERSION_ATLEAST (5,9,0)
473	New(54,PL_retstack,16,OP*);	520	New(54,PL_retstack,4,OP*);
474	PL_retstack_ix = 0;	521	PL_retstack_ix = 0;
475	PL_retstack_max = 16;	522	PL_retstack_max = 4;
476	#endif	523	#endif
477	}	524	}
478	#endif	525	#endif
479		526
480	/*	527	/*
481	* destroy the stacks, the callchain etc...	528	* destroy the stacks, the callchain etc...
482	*/	529	*/
483	static void	530	static void
484	coro_destroy_stacks ()	531	coro_destroy_stacks (pTHX)
485	{	532	{
486	if (!IN_DESTRUCT)
487	{
488	/* restore all saved variables and stuff */
489	LEAVE_SCOPE (0);
490	assert (PL_tmps_floor == -1);
491
492	/* free all temporaries */
493	FREETMPS;
494	assert (PL_tmps_ix == -1);
495
496	/* unwind all extra stacks */
497	POPSTACK_TO (PL_mainstack);
498
499	/* unwind main stack */
500	dounwind (-1);
501	}
502
503	while (PL_curstackinfo->si_next)	533	while (PL_curstackinfo->si_next)
504	PL_curstackinfo = PL_curstackinfo->si_next;	534	PL_curstackinfo = PL_curstackinfo->si_next;
505		535
506	while (PL_curstackinfo)	536	while (PL_curstackinfo)
507	{	537	{
…		…
522	#if !PERL_VERSION_ATLEAST (5,9,0)	552	#if !PERL_VERSION_ATLEAST (5,9,0)
523	Safefree (PL_retstack);	553	Safefree (PL_retstack);
524	#endif	554	#endif
525	}	555	}
526		556
		557	static size_t
		558	coro_rss (pTHX_ struct coro *coro)
		559	{
		560	size_t rss = sizeof (*coro);
		561
		562	if (coro->mainstack)
		563	{
		564	if (coro->flags & CF_RUNNING)
		565	{
		566	#define VAR(name,type)coro->name = PL_ ## name;
		567	# include "state.h"
		568	#undef VAR
		569	}
		570
		571	rss += sizeof (coro->curstackinfo);
		572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		575	rss += coro->tmps_max * sizeof (SV *);
		576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		577	rss += coro->scopestack_max * sizeof (I32);
		578	rss += coro->savestack_max * sizeof (ANY);
		579
		580	#if !PERL_VERSION_ATLEAST (5,9,0)
		581	rss += coro->retstack_max * sizeof (OP *);
		582	#endif
		583	}
		584
		585	return rss;
		586	}
		587
527	/** coroutine stack handling ************************************************/	588	/** coroutine stack handling ************************************************/
528		589
529	static void	590	static void
530	setup_coro (struct coro *coro)	591	coro_setup (pTHX_ struct coro *coro)
531	{	592	{
532	/*	593	/*
533	* emulate part of the perl startup here.	594	* emulate part of the perl startup here.
534	*/	595	*/
535
536	coro_init_stacks ();	596	coro_init_stacks (aTHX);
537		597
		598	PL_runops = RUNOPS_DEFAULT;
538	PL_curcop = &PL_compiling;	599	PL_curcop = &PL_compiling;
539	PL_in_eval = EVAL_NULL;	600	PL_in_eval = EVAL_NULL;
		601	PL_comppad = 0;
540	PL_curpm = 0;	602	PL_curpm = 0;
541	PL_localizing = 0;	603	PL_localizing = 0;
542	PL_dirty = 0;	604	PL_dirty = 0;
543	PL_restartop = 0;	605	PL_restartop = 0;
		606
		607	GvSV (PL_defgv) = NEWSV (0, 0);
		608	GvAV (PL_defgv) = coro->args; coro->args = 0;
		609	GvSV (PL_errgv) = NEWSV (0, 0);
		610	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		611	PL_rs = newSVsv (GvSV (irsgv));
		612
		613	{
		614	IO *io = newIO ();
		615	PL_defoutgv = newGVgen ("Coro");
		616	GvIOp(PL_defoutgv) = io;
		617	IoTYPE (io) = IoTYPE_WRONLY;
		618	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		619	IoFLAGS (io) |= IOf_FLUSH;
		620	}
544		621
545	{	622	{
546	dSP;	623	dSP;
547	LOGOP myop;	624	LOGOP myop;
548		625
549	SvREFCNT_dec (GvAV (PL_defgv));
550	GvAV (PL_defgv) = coro->args; coro->args = 0;
551
552	Zero (&myop, 1, LOGOP);	626	Zero (&myop, 1, LOGOP);
553	myop.op_next = Nullop;	627	myop.op_next = Nullop;
554	myop.op_flags = OPf_WANT_VOID;	628	myop.op_flags = OPf_WANT_VOID;
555		629
556	PUSHMARK (SP);	630	PUSHMARK (SP);
557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	631	XPUSHs (av_shift (GvAV (PL_defgv)));
558	PUTBACK;	632	PUTBACK;
559	PL_op = (OP *)&myop;	633	PL_op = (OP *)&myop;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	634	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	635	SPAGAIN;
562	}	636	}
563		637
564	ENTER; /* necessary e.g. for dounwind */	638	ENTER; /* necessary e.g. for dounwind */
565	}	639	}
566		640
567	static void	641	static void
		642	coro_destroy (pTHX_ struct coro *coro)
		643	{
		644	if (!IN_DESTRUCT)
		645	{
		646	/* restore all saved variables and stuff */
		647	LEAVE_SCOPE (0);
		648	assert (PL_tmps_floor == -1);
		649
		650	/* free all temporaries */
		651	FREETMPS;
		652	assert (PL_tmps_ix == -1);
		653
		654	/* unwind all extra stacks */
		655	POPSTACK_TO (PL_mainstack);
		656
		657	/* unwind main stack */
		658	dounwind (-1);
		659	}
		660
		661	SvREFCNT_dec (GvSV (PL_defgv));
		662	SvREFCNT_dec (GvAV (PL_defgv));
		663	SvREFCNT_dec (GvSV (PL_errgv));
		664	SvREFCNT_dec (PL_defoutgv);
		665	SvREFCNT_dec (PL_rs);
		666	SvREFCNT_dec (GvSV (irsgv));
		667
		668	SvREFCNT_dec (coro->asp_deffh);
		669	//SvREFCNT_dec (coro->throw);
		670
		671	coro_destroy_stacks (aTHX);
		672	}
		673
		674	static void
568	free_coro_mortal ()	675	free_coro_mortal (pTHX)
569	{	676	{
570	if (coro_mortal)	677	if (coro_mortal)
571	{	678	{
572	SvREFCNT_dec (coro_mortal);	679	SvREFCNT_dec (coro_mortal);
573	coro_mortal = 0;	680	coro_mortal = 0;
574	}	681	}
575	}	682	}
576		683
		684	static int
		685	runops_trace (pTHX)
		686	{
		687	COP *oldcop = 0;
		688	int oldcxix = -2;
		689	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		690	coro_cctx *cctx = coro->cctx;
		691
		692	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		693	{
		694	PERL_ASYNC_CHECK ();
		695
		696	if (cctx->flags & CC_TRACE_ALL)
		697	{
		698	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		699	{
		700	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		701	SV **bot, **top;
		702	AV *av = newAV (); /* return values */
		703	SV **cb;
		704	dSP;
		705
		706	GV *gv = CvGV (cx->blk_sub.cv);
		707	SV *fullname = sv_2mortal (newSV (0));
		708	if (isGV (gv))
		709	gv_efullname3 (fullname, gv, 0);
		710
		711	bot = PL_stack_base + cx->blk_oldsp + 1;
		712	top = cx->blk_gimme == G_ARRAY ? SP + 1
		713	: cx->blk_gimme == G_SCALAR ? bot + 1
		714	: bot;
		715
		716	while (bot < top)
		717	av_push (av, SvREFCNT_inc (*bot++));
		718
		719	PL_runops = RUNOPS_DEFAULT;
		720	ENTER;
		721	SAVETMPS;
		722	EXTEND (SP, 3);
		723	PUSHMARK (SP);
		724	PUSHs (&PL_sv_no);
		725	PUSHs (fullname);
		726	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		727	PUTBACK;
		728	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		729	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		730	SPAGAIN;
		731	FREETMPS;
		732	LEAVE;
		733	PL_runops = runops_trace;
		734	}
		735
		736	if (oldcop != PL_curcop)
		737	{
		738	oldcop = PL_curcop;
		739
		740	if (PL_curcop != &PL_compiling)
		741	{
		742	SV **cb;
		743
		744	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		745	{
		746	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		747
		748	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		749	{
		750	runops_proc_t old_runops = PL_runops;
		751	dSP;
		752	GV *gv = CvGV (cx->blk_sub.cv);
		753	SV *fullname = sv_2mortal (newSV (0));
		754
		755	if (isGV (gv))
		756	gv_efullname3 (fullname, gv, 0);
		757
		758	PL_runops = RUNOPS_DEFAULT;
		759	ENTER;
		760	SAVETMPS;
		761	EXTEND (SP, 3);
		762	PUSHMARK (SP);
		763	PUSHs (&PL_sv_yes);
		764	PUSHs (fullname);
		765	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		766	PUTBACK;
		767	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		768	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		769	SPAGAIN;
		770	FREETMPS;
		771	LEAVE;
		772	PL_runops = runops_trace;
		773	}
		774
		775	oldcxix = cxstack_ix;
		776	}
		777
		778	if (cctx->flags & CC_TRACE_LINE)
		779	{
		780	dSP;
		781
		782	PL_runops = RUNOPS_DEFAULT;
		783	ENTER;
		784	SAVETMPS;
		785	EXTEND (SP, 3);
		786	PL_runops = RUNOPS_DEFAULT;
		787	PUSHMARK (SP);
		788	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		789	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		790	PUTBACK;
		791	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		792	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		793	SPAGAIN;
		794	FREETMPS;
		795	LEAVE;
		796	PL_runops = runops_trace;
		797	}
		798	}
		799	}
		800	}
		801	}
		802
		803	TAINT_NOT;
		804	return 0;
		805	}
		806
577	/* inject a fake call to Coro::State::_cctx_init into the execution */	807	/* inject a fake call to Coro::State::_cctx_init into the execution */
		808	/* _cctx_init should be careful, as it could be called at almost any time */
		809	/* during execution of a perl program */
578	static void NOINLINE	810	static void NOINLINE
579	prepare_cctx (coro_cctx *cctx)	811	prepare_cctx (pTHX_ coro_cctx *cctx)
580	{	812	{
581	dSP;	813	dSP;
582	LOGOP myop;	814	LOGOP myop;
		815
		816	PL_top_env = &PL_start_env;
		817
		818	if (cctx->flags & CC_TRACE)
		819	PL_runops = runops_trace;
583		820
584	Zero (&myop, 1, LOGOP);	821	Zero (&myop, 1, LOGOP);
585	myop.op_next = PL_op;	822	myop.op_next = PL_op;
586	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	823	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
587		824
…		…
593	PL_op = (OP *)&myop;	830	PL_op = (OP *)&myop;
594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	831	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
595	SPAGAIN;	832	SPAGAIN;
596	}	833	}
597		834
		835	/*
		836	* this is a _very_ stripped down perl interpreter ;)
		837	*/
598	static void	838	static void
599	coro_run (void *arg)	839	coro_run (void *arg)
600	{	840	{
		841	dTHX;
		842
601	/* coro_run is the alternative tail of transfer(), so unlock here. */	843	/* coro_run is the alternative tail of transfer(), so unlock here. */
602	UNLOCK;	844	UNLOCK;
603		845
604	/*	846	/* we now skip the entersub that lead to transfer() */
605	* this is a _very_ stripped down perl interpreter ;)	847	PL_op = PL_op->op_next;
606	*/
607	PL_top_env = &PL_start_env;
608		848
609	/* inject call to cctx_init */	849	/* inject a fake subroutine call to cctx_init */
610	prepare_cctx ((coro_cctx *)arg);	850	prepare_cctx (aTHX_ (coro_cctx *)arg);
611		851
612	/* somebody will hit me for both perl_run and PL_restartop */	852	/* somebody or something will hit me for both perl_run and PL_restartop */
613	PL_restartop = PL_op;	853	PL_restartop = PL_op;
614	perl_run (PL_curinterp);	854	perl_run (PL_curinterp);
615		855
616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	856	/*
617	abort ();	857	* If perl-run returns we assume exit() was being called or the coro
		858	* fell off the end, which seems to be the only valid (non-bug)
		859	* reason for perl_run to return. We try to exit by jumping to the
		860	* bootstrap-time "top" top_env, as we cannot restore the "main"
		861	* coroutine as Coro has no such concept
		862	*/
		863	PL_top_env = main_top_env;
		864	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
618	}	865	}
619		866
620	static coro_cctx *	867	static coro_cctx *
621	cctx_new ()	868	cctx_new ()
622	{	869	{
623	coro_cctx *cctx;	870	coro_cctx *cctx;
		871	void *stack_start;
		872	size_t stack_size;
624		873
625	++cctx_count;	874	++cctx_count;
626		875
627	Newz (0, cctx, 1, coro_cctx);	876	Newz (0, cctx, 1, coro_cctx);
628		877
629	#if HAVE_MMAP	878	#if HAVE_MMAP
630		879
631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	880	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632	/* mmap supposedly does allocate-on-write for us */	881	/* mmap supposedly does allocate-on-write for us */
633	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	882	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
634		883
635	if (cctx->sptr == (void *)-1)	884	if (cctx->sptr != (void *)-1)
636	{
637	perror ("FATAL: unable to mmap stack for coroutine");
638	_exit (EXIT_FAILURE);
639	}	885	{
640
641	# if STACKGUARD	886	# if CORO_STACKGUARD
642	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	887	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
643	# endif	888	# endif
		889	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		890	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		891	cctx->flags |= CC_MAPPED;
		892	}
		893	else
		894	#endif
		895	{
		896	cctx->ssize = coro_stacksize * (long)sizeof (long);
		897	New (0, cctx->sptr, coro_stacksize, long);
644		898
645	#else
646
647	cctx->ssize = STACKSIZE * (long)sizeof (long);
648	New (0, cctx->sptr, STACKSIZE, long);
649
650	if (!cctx->sptr)	899	if (!cctx->sptr)
651	{	900	{
652	perror ("FATAL: unable to malloc stack for coroutine");	901	perror ("FATAL: unable to allocate stack for coroutine");
653	_exit (EXIT_FAILURE);	902	_exit (EXIT_FAILURE);
654	}	903	}
655		904
656	#endif	905	stack_start = cctx->sptr;
		906	stack_size = cctx->ssize;
		907	}
657		908
658	#if USE_VALGRIND	909	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
659	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
660	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
661	cctx->ssize + (char *)cctx->sptr
662	);
663	#endif
664
665	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	910	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
666		911
667	return cctx;	912	return cctx;
668	}	913	}
669		914
670	static void	915	static void
…		…
673	if (!cctx)	918	if (!cctx)
674	return;	919	return;
675		920
676	--cctx_count;	921	--cctx_count;
677		922
678	#if USE_VALGRIND	923	#if CORO_USE_VALGRIND
679	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	924	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680	#endif	925	#endif
681		926
682	#if HAVE_MMAP	927	#if HAVE_MMAP
		928	if (cctx->flags & CC_MAPPED)
683	munmap (cctx->sptr, cctx->ssize);	929	munmap (cctx->sptr, cctx->ssize);
684	#else	930	else
		931	#endif
685	Safefree (cctx->sptr);	932	Safefree (cctx->sptr);
686	#endif
687		933
688	Safefree (cctx);	934	Safefree (cctx);
689	}	935	}
690		936
691	static coro_cctx *	937	static coro_cctx *
692	cctx_get ()	938	cctx_get (pTHX)
693	{	939	{
694	coro_cctx *cctx;
695
696	if (cctx_first)	940	while (cctx_first)
697	{	941	{
698	cctx = cctx_first;	942	coro_cctx *cctx = cctx_first;
699	cctx_first = cctx->next;	943	cctx_first = cctx->next;
700	--cctx_idle;	944	--cctx_idle;
701	}	945
702	else	946	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
703	{	947	return cctx;
704	cctx = cctx_new ();	948
705	PL_op = PL_op->op_next;	949	cctx_destroy (cctx);
706	}	950	}
707		951
708	return cctx;	952	return cctx_new ();
709	}	953	}
710		954
711	static void	955	static void
712	cctx_put (coro_cctx *cctx)	956	cctx_put (coro_cctx *cctx)
713	{	957	{
…		…
716	{	960	{
717	coro_cctx *first = cctx_first;	961	coro_cctx *first = cctx_first;
718	cctx_first = first->next;	962	cctx_first = first->next;
719	--cctx_idle;	963	--cctx_idle;
720		964
721	assert (!first->inuse);
722	cctx_destroy (first);	965	cctx_destroy (first);
723	}	966	}
724		967
725	++cctx_idle;	968	++cctx_idle;
726	cctx->next = cctx_first;	969	cctx->next = cctx_first;
727	cctx_first = cctx;	970	cctx_first = cctx;
728	}	971	}
729		972
730	/** coroutine switching *****************************************************/	973	/** coroutine switching *****************************************************/
731		974
732	/* never call directly, always through the coro_state_transfer global variable */
733	static void NOINLINE	975	static void NOINLINE
		976	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		977	{
		978	if (prev != next)
		979	{
		980	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		981	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		982
		983	if (next->flags & CF_RUNNING)
		984	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		985
		986	if (next->flags & CF_DESTROYED)
		987	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		988
		989	if (PL_lex_state != LEX_NOTPARSING)
		990	croak ("Coro::State::transfer called while parsing, but this is not supported");
		991	}
		992	}
		993
		994	/* always use the TRANSFER macro */
		995	static void NOINLINE
734	transfer (struct coro *prev, struct coro *next)	996	transfer (pTHX_ struct coro *prev, struct coro *next)
735	{	997	{
736	dSTACKLEVEL;	998	dSTACKLEVEL;
737		999
738	/* sometimes transfer is only called to set idle_sp */	1000	/* sometimes transfer is only called to set idle_sp */
739	if (!next)	1001	if (!next)
…		…
747		1009
748	if (prev->flags & CF_NEW)	1010	if (prev->flags & CF_NEW)
749	{	1011	{
750	/* create a new empty context */	1012	/* create a new empty context */
751	Newz (0, prev->cctx, 1, coro_cctx);	1013	Newz (0, prev->cctx, 1, coro_cctx);
752	prev->cctx->inuse = 1;
753	prev->flags &= ~CF_NEW;	1014	prev->flags &= ~CF_NEW;
754	prev->flags |= CF_RUNNING;	1015	prev->flags |= CF_RUNNING;
755	}	1016	}
756
757	/*TODO: must not croak here */
758	if (!prev->flags & CF_RUNNING)
759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
760
761	if (next->flags & CF_RUNNING)
762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
763
764	if (next->flags & CF_DESTROYED)
765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
766		1017
767	prev->flags &= ~CF_RUNNING;	1018	prev->flags &= ~CF_RUNNING;
768	next->flags |= CF_RUNNING;	1019	next->flags |= CF_RUNNING;
769		1020
770	LOCK;	1021	LOCK;
…		…
772	if (next->flags & CF_NEW)	1023	if (next->flags & CF_NEW)
773	{	1024	{
774	/* need to start coroutine */	1025	/* need to start coroutine */
775	next->flags &= ~CF_NEW;	1026	next->flags &= ~CF_NEW;
776	/* first get rid of the old state */	1027	/* first get rid of the old state */
777	save_perl (prev);	1028	save_perl (aTHX_ prev);
778	/* setup coroutine call */	1029	/* setup coroutine call */
779	setup_coro (next);	1030	coro_setup (aTHX_ next);
780	/* need a new stack */
781	assert (!next->cctx);
782	}	1031	}
783	else	1032	else
784	{	1033	{
785	/* coroutine already started */	1034	/* coroutine already started */
786	save_perl (prev);	1035	save_perl (aTHX_ prev);
787	load_perl (next);	1036	load_perl (aTHX_ next);
788	}	1037	}
789		1038
790	prev__cctx = prev->cctx;	1039	prev__cctx = prev->cctx;
791		1040
792	/* possibly "free" the cctx */	1041	/* possibly "free" the cctx */
793	if (prev__cctx->idle_sp == STACKLEVEL)	1042	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
794	{	1043	{
795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1044	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1045	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
797		1046
798	prev->cctx = 0;	1047	prev->cctx = 0;
799		1048
800	cctx_put (prev__cctx);	1049	cctx_put (prev__cctx);
801	prev__cctx->inuse = 0;
802	}	1050	}
803		1051
		1052	++next->usecount;
		1053
804	if (!next->cctx)	1054	if (!next->cctx)
805	{
806	next->cctx = cctx_get ();	1055	next->cctx = cctx_get (aTHX);
807	assert (!next->cctx->inuse);
808	next->cctx->inuse = 1;
809	}
810		1056
811	if (prev__cctx != next->cctx)	1057	if (prev__cctx != next->cctx)
812	{	1058	{
813	prev__cctx->top_env = PL_top_env;	1059	prev__cctx->top_env = PL_top_env;
814	PL_top_env = next->cctx->top_env;	1060	PL_top_env = next->cctx->top_env;
815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1061	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
816	}	1062	}
817		1063
818	free_coro_mortal ();	1064	free_coro_mortal (aTHX);
819	UNLOCK;	1065	UNLOCK;
820	}	1066	}
821	}	1067	}
822		1068
823	struct transfer_args	1069	struct transfer_args
824	{	1070	{
825	struct coro *prev, *next;	1071	struct coro *prev, *next;
826	};	1072	};
827		1073
828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1074	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1075	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
829		1076
830	/** high level stuff ********************************************************/	1077	/** high level stuff ********************************************************/
831		1078
832	static int	1079	static int
833	coro_state_destroy (struct coro *coro)	1080	coro_state_destroy (pTHX_ struct coro *coro)
834	{	1081	{
835	if (coro->flags & CF_DESTROYED)	1082	if (coro->flags & CF_DESTROYED)
836	return 0;	1083	return 0;
837		1084
838	coro->flags |= CF_DESTROYED;	1085	coro->flags |= CF_DESTROYED;
839		1086
840	if (coro->flags & CF_READY)	1087	if (coro->flags & CF_READY)
841	{	1088	{
842	/* reduce nready, as destroying a ready coro effectively unreadies it */	1089	/* reduce nready, as destroying a ready coro effectively unreadies it */
843	/* alternative: look through all ready queues and remove it */	1090	/* alternative: look through all ready queues and remove the coro */
844	LOCK;	1091	LOCK;
845	--coro_nready;	1092	--coro_nready;
846	UNLOCK;	1093	UNLOCK;
847	}	1094	}
848	else	1095	else
849	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1096	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
850		1097
851	if (coro->mainstack && coro->mainstack != main_mainstack)	1098	if (coro->mainstack && coro->mainstack != main_mainstack)
852	{	1099	{
853	assert (!(coro->flags & CF_RUNNING));
854
855	struct coro temp;	1100	struct coro temp;
856	Zero (&temp, 1, struct coro);
857	temp.save = CORO_SAVE_ALL;
858		1101
859	if (coro->flags & CF_RUNNING)	1102	if (coro->flags & CF_RUNNING)
860	croak ("FATAL: tried to destroy currently running coroutine");	1103	croak ("FATAL: tried to destroy currently running coroutine");
861		1104
862	save_perl (&temp);	1105	save_perl (aTHX_ &temp);
863	load_perl (coro);	1106	load_perl (aTHX_ coro);
864		1107
865	coro_destroy_stacks ();	1108	coro_destroy (aTHX_ coro);
866		1109
867	load_perl (&temp); /* this will get rid of defsv etc.. */	1110	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
868		1111
869	coro->mainstack = 0;	1112	coro->mainstack = 0;
870	}	1113	}
871		1114
872	cctx_destroy (coro->cctx);	1115	cctx_destroy (coro->cctx);
873	SvREFCNT_dec (coro->args);	1116	SvREFCNT_dec (coro->args);
874		1117
		1118	if (coro->next) coro->next->prev = coro->prev;
		1119	if (coro->prev) coro->prev->next = coro->next;
		1120	if (coro == coro_first) coro_first = coro->next;
		1121
875	return 1;	1122	return 1;
876	}	1123	}
877		1124
878	static int	1125	static int
879	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1126	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
880	{	1127	{
881	struct coro *coro = (struct coro *)mg->mg_ptr;	1128	struct coro *coro = (struct coro *)mg->mg_ptr;
882	mg->mg_ptr = 0;	1129	mg->mg_ptr = 0;
883		1130
		1131	coro->hv = 0;
		1132
884	if (--coro->refcnt < 0)	1133	if (--coro->refcnt < 0)
885	{	1134	{
886	coro_state_destroy (coro);	1135	coro_state_destroy (aTHX_ coro);
887	Safefree (coro);	1136	Safefree (coro);
888	}	1137	}
889		1138
890	return 0;	1139	return 0;
891	}	1140	}
…		…
909	#else	1158	#else
910	# define MGf_DUP 0	1159	# define MGf_DUP 0
911	#endif	1160	#endif
912	};	1161	};
913		1162
914	static struct coro *
915	SvSTATE (SV *coro)
916	{
917	HV *stash;
918	MAGIC *mg;
919
920	if (SvROK (coro))
921	coro = SvRV (coro);
922
923	stash = SvSTASH (coro);
924	if (stash != coro_stash && stash != coro_state_stash)
925	{
926	/* very slow, but rare, check */
927	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
928	croak ("Coro::State object required");
929	}
930
931	mg = SvMAGIC (coro);
932	assert (mg->mg_type == PERL_MAGIC_ext);
933	return (struct coro *)mg->mg_ptr;
934	}
935
936	static void	1163	static void
937	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1164	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
938	{	1165	{
939	ta->prev = SvSTATE (prev_sv);	1166	ta->prev = SvSTATE (prev_sv);
940	ta->next = SvSTATE (next_sv);	1167	ta->next = SvSTATE (next_sv);
		1168	TRANSFER_CHECK (*ta);
941	}	1169	}
942		1170
943	static void	1171	static void
944	api_transfer (SV *prev_sv, SV *next_sv)	1172	api_transfer (SV *prev_sv, SV *next_sv)
945	{	1173	{
		1174	dTHX;
946	struct transfer_args ta;	1175	struct transfer_args ta;
947		1176
948	prepare_transfer (&ta, prev_sv, next_sv);	1177	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
949	TRANSFER (ta);	1178	TRANSFER (ta);
950	}	1179	}
951		1180
952	static int
953	api_save (SV *coro_sv, int new_save)
954	{
955	struct coro *coro = SvSTATE (coro_sv);
956	int old_save = coro->save;
957
958	if (new_save >= 0)
959	coro->save = new_save;
960
961	return old_save;
962	}
963
964	/** Coro ********************************************************************/	1181	/** Coro ********************************************************************/
965		1182
966	static void	1183	static void
967	coro_enq (SV *coro_sv)	1184	coro_enq (pTHX_ SV *coro_sv)
968	{	1185	{
969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1186	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
970	}	1187	}
971		1188
972	static SV *	1189	static SV *
973	coro_deq (int min_prio)	1190	coro_deq (pTHX_ int min_prio)
974	{	1191	{
975	int prio = PRIO_MAX - PRIO_MIN;	1192	int prio = PRIO_MAX - PRIO_MIN;
976		1193
977	min_prio -= PRIO_MIN;	1194	min_prio -= PRIO_MIN;
978	if (min_prio < 0)	1195	if (min_prio < 0)
…		…
986	}	1203	}
987		1204
988	static int	1205	static int
989	api_ready (SV *coro_sv)	1206	api_ready (SV *coro_sv)
990	{	1207	{
		1208	dTHX;
991	struct coro *coro;	1209	struct coro *coro;
992		1210
993	if (SvROK (coro_sv))	1211	if (SvROK (coro_sv))
994	coro_sv = SvRV (coro_sv);	1212	coro_sv = SvRV (coro_sv);
995		1213
…		…
999	return 0;	1217	return 0;
1000		1218
1001	coro->flags |= CF_READY;	1219	coro->flags |= CF_READY;
1002		1220
1003	LOCK;	1221	LOCK;
1004	coro_enq (SvREFCNT_inc (coro_sv));	1222	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1005	++coro_nready;	1223	++coro_nready;
1006	UNLOCK;	1224	UNLOCK;
1007		1225
1008	return 1;	1226	return 1;
1009	}	1227	}
1010		1228
1011	static int	1229	static int
1012	api_is_ready (SV *coro_sv)	1230	api_is_ready (SV *coro_sv)
1013	{	1231	{
		1232	dTHX;
1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1233	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1015	}	1234	}
1016		1235
1017	static void	1236	static void
1018	prepare_schedule (struct transfer_args *ta)	1237	prepare_schedule (pTHX_ struct transfer_args *ta)
1019	{	1238	{
1020	SV *prev_sv, *next_sv;	1239	SV *prev_sv, *next_sv;
1021		1240
1022	for (;;)	1241	for (;;)
1023	{	1242	{
1024	LOCK;	1243	LOCK;
1025	next_sv = coro_deq (PRIO_MIN);	1244	next_sv = coro_deq (aTHX_ PRIO_MIN);
1026		1245
1027	/* nothing to schedule: call the idle handler */	1246	/* nothing to schedule: call the idle handler */
1028	if (!next_sv)	1247	if (!next_sv)
1029	{	1248	{
		1249	dSP;
1030	UNLOCK;	1250	UNLOCK;
1031	dSP;
1032		1251
1033	ENTER;	1252	ENTER;
1034	SAVETMPS;	1253	SAVETMPS;
1035		1254
1036	PUSHMARK (SP);	1255	PUSHMARK (SP);
…		…
1058	break;	1277	break;
1059	}	1278	}
1060		1279
1061	/* free this only after the transfer */	1280	/* free this only after the transfer */
1062	prev_sv = SvRV (coro_current);	1281	prev_sv = SvRV (coro_current);
1063	SvRV_set (coro_current, next_sv);
1064	ta->prev = SvSTATE (prev_sv);	1282	ta->prev = SvSTATE (prev_sv);
1065		1283	TRANSFER_CHECK (*ta);
1066	assert (ta->next->flags & CF_READY);	1284	assert (ta->next->flags & CF_READY);
1067	ta->next->flags &= ~CF_READY;	1285	ta->next->flags &= ~CF_READY;
		1286	SvRV_set (coro_current, next_sv);
1068		1287
1069	LOCK;	1288	LOCK;
1070	free_coro_mortal ();	1289	free_coro_mortal (aTHX);
1071	coro_mortal = prev_sv;	1290	coro_mortal = prev_sv;
1072	UNLOCK;	1291	UNLOCK;
1073	}	1292	}
1074		1293
1075	static void	1294	static void
1076	prepare_cede (struct transfer_args *ta)	1295	prepare_cede (pTHX_ struct transfer_args *ta)
1077	{	1296	{
1078	api_ready (coro_current);	1297	api_ready (coro_current);
1079	prepare_schedule (ta);	1298	prepare_schedule (aTHX_ ta);
1080	}	1299	}
1081		1300
1082	static int	1301	static int
1083	prepare_cede_notself (struct transfer_args *ta)	1302	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1084	{	1303	{
1085	if (coro_nready)	1304	if (coro_nready)
1086	{	1305	{
1087	SV *prev = SvRV (coro_current);	1306	SV *prev = SvRV (coro_current);
1088	prepare_schedule (ta);	1307	prepare_schedule (aTHX_ ta);
1089	api_ready (prev);	1308	api_ready (prev);
1090	return 1;	1309	return 1;
1091	}	1310	}
1092	else	1311	else
1093	return 0;	1312	return 0;
1094	}	1313	}
1095		1314
1096	static void	1315	static void
1097	api_schedule (void)	1316	api_schedule (void)
1098	{	1317	{
		1318	dTHX;
1099	struct transfer_args ta;	1319	struct transfer_args ta;
1100		1320
1101	prepare_schedule (&ta);	1321	prepare_schedule (aTHX_ &ta);
1102	TRANSFER (ta);	1322	TRANSFER (ta);
1103	}	1323	}
1104		1324
1105	static int	1325	static int
1106	api_cede (void)	1326	api_cede (void)
1107	{	1327	{
		1328	dTHX;
1108	struct transfer_args ta;	1329	struct transfer_args ta;
1109		1330
1110	prepare_cede (&ta);	1331	prepare_cede (aTHX_ &ta);
1111		1332
1112	if (ta.prev != ta.next)	1333	if (ta.prev != ta.next)
1113	{	1334	{
1114	TRANSFER (ta);	1335	TRANSFER (ta);
1115	return 1;	1336	return 1;
…		…
1119	}	1340	}
1120		1341
1121	static int	1342	static int
1122	api_cede_notself (void)	1343	api_cede_notself (void)
1123	{	1344	{
		1345	dTHX;
1124	struct transfer_args ta;	1346	struct transfer_args ta;
1125		1347
1126	if (prepare_cede_notself (&ta))	1348	if (prepare_cede_notself (aTHX_ &ta))
1127	{	1349	{
1128	TRANSFER (ta);	1350	TRANSFER (ta);
1129	return 1;	1351	return 1;
1130	}	1352	}
1131	else	1353	else
1132	return 0;	1354	return 0;
1133	}	1355	}
1134		1356
		1357	static void
		1358	api_trace (SV *coro_sv, int flags)
		1359	{
		1360	dTHX;
		1361	struct coro *coro = SvSTATE (coro_sv);
		1362
		1363	if (flags & CC_TRACE)
		1364	{
		1365	if (!coro->cctx)
		1366	coro->cctx = cctx_new ();
		1367	else if (!(coro->cctx->flags & CC_TRACE))
		1368	croak ("cannot enable tracing on coroutine with custom stack");
		1369
		1370	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1371	}
		1372	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1373	{
		1374	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1375
		1376	if (coro->flags & CF_RUNNING)
		1377	PL_runops = RUNOPS_DEFAULT;
		1378	else
		1379	coro->runops = RUNOPS_DEFAULT;
		1380	}
		1381	}
		1382
1135	MODULE = Coro::State PACKAGE = Coro::State	1383	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1136		1384
1137	PROTOTYPES: DISABLE	1385	PROTOTYPES: DISABLE
1138		1386
1139	BOOT:	1387	BOOT:
1140	{	1388	{
1141	#ifdef USE_ITHREADS	1389	#ifdef USE_ITHREADS
1142	MUTEX_INIT (&coro_mutex);	1390	MUTEX_INIT (&coro_mutex);
1143	#endif	1391	#endif
1144	BOOT_PAGESIZE;	1392	BOOT_PAGESIZE;
1145		1393
		1394	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1395
1146	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1147		1397
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1148	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1149	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1150	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1151	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1152	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1153		1402
1154	main_mainstack = PL_mainstack;	1403	main_mainstack = PL_mainstack;
		1404	main_top_env = PL_top_env;
		1405
		1406	while (main_top_env->je_prev)
		1407	main_top_env = main_top_env->je_prev;
1155		1408
1156	coroapi.ver = CORO_API_VERSION;	1409	coroapi.ver = CORO_API_VERSION;
1157	coroapi.transfer = api_transfer;	1410	coroapi.transfer = api_transfer;
1158		1411
1159	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1412	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1166	struct coro *coro;	1419	struct coro *coro;
1167	HV *hv;	1420	HV *hv;
1168	int i;	1421	int i;
1169		1422
1170	Newz (0, coro, 1, struct coro);	1423	Newz (0, coro, 1, struct coro);
1171	coro->args = newAV ();	1424	coro->args = newAV ();
1172	coro->save = CORO_SAVE_ALL;
1173	coro->flags = CF_NEW;	1425	coro->flags = CF_NEW;
1174		1426
		1427	if (coro_first) coro_first->prev = coro;
		1428	coro->next = coro_first;
		1429	coro_first = coro;
		1430
1175	hv = newHV ();	1431	coro->hv = hv = newHV ();
1176	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1432	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1177	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1433	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1178		1434
1179	for (i = 1; i < items; i++)	1435	for (i = 1; i < items; i++)
1180	av_push (coro->args, newSVsv (ST (i)));	1436	av_push (coro->args, newSVsv (ST (i)));
1181	}	1437	}
1182	OUTPUT:	1438	OUTPUT:
1183	RETVAL	1439	RETVAL
1184		1440
1185	int	1441	# these not obviously related functions are all rolled into the same xs
1186	save (SV *coro, int new_save = -1)	1442	# function to increase chances that they all will call transfer with the same
1187	CODE:	1443	# stack offset
1188	RETVAL = api_save (coro, new_save);
1189	OUTPUT:
1190	RETVAL
1191
1192	void	1444	void
1193	_set_stacklevel (...)	1445	_set_stacklevel (...)
1194	ALIAS:	1446	ALIAS:
1195	Coro::State::transfer = 1	1447	Coro::State::transfer = 1
1196	Coro::schedule = 2	1448	Coro::schedule = 2
…		…
1209		1461
1210	case 1:	1462	case 1:
1211	if (items != 2)	1463	if (items != 2)
1212	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1464	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1213		1465
1214	prepare_transfer (&ta, ST (0), ST (1));	1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1215	break;	1467	break;
1216		1468
1217	case 2:	1469	case 2:
1218	prepare_schedule (&ta);	1470	prepare_schedule (aTHX_ &ta);
1219	break;	1471	break;
1220		1472
1221	case 3:	1473	case 3:
1222	prepare_cede (&ta);	1474	prepare_cede (aTHX_ &ta);
1223	break;	1475	break;
1224		1476
1225	case 4:	1477	case 4:
1226	if (!prepare_cede_notself (&ta))	1478	if (!prepare_cede_notself (aTHX_ &ta))
1227	XSRETURN_EMPTY;	1479	XSRETURN_EMPTY;
1228		1480
1229	break;	1481	break;
1230	}	1482	}
1231		1483
…		…
1237	}	1489	}
1238		1490
1239	bool	1491	bool
1240	_destroy (SV *coro_sv)	1492	_destroy (SV *coro_sv)
1241	CODE:	1493	CODE:
1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1243	OUTPUT:	1495	OUTPUT:
1244	RETVAL	1496	RETVAL
1245		1497
1246	void	1498	void
1247	_exit (code)	1499	_exit (code)
…		…
1249	PROTOTYPE: $	1501	PROTOTYPE: $
1250	CODE:	1502	CODE:
1251	_exit (code);	1503	_exit (code);
1252		1504
1253	int	1505	int
		1506	cctx_stacksize (int new_stacksize = 0)
		1507	CODE:
		1508	RETVAL = coro_stacksize;
		1509	if (new_stacksize)
		1510	coro_stacksize = new_stacksize;
		1511	OUTPUT:
		1512	RETVAL
		1513
		1514	int
1254	cctx_count ()	1515	cctx_count ()
1255	CODE:	1516	CODE:
1256	RETVAL = cctx_count;	1517	RETVAL = cctx_count;
1257	OUTPUT:	1518	OUTPUT:
1258	RETVAL	1519	RETVAL
…		…
1262	CODE:	1523	CODE:
1263	RETVAL = cctx_idle;	1524	RETVAL = cctx_idle;
1264	OUTPUT:	1525	OUTPUT:
1265	RETVAL	1526	RETVAL
1266		1527
		1528	void
		1529	list ()
		1530	PPCODE:
		1531	{
		1532	struct coro *coro;
		1533	for (coro = coro_first; coro; coro = coro->next)
		1534	if (coro->hv)
		1535	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1536	}
		1537
		1538	void
		1539	call (Coro::State coro, SV *coderef)
		1540	ALIAS:
		1541	eval = 1
		1542	CODE:
		1543	{
		1544	if (coro->mainstack)
		1545	{
		1546	struct coro temp;
		1547	Zero (&temp, 1, struct coro);
		1548
		1549	if (!(coro->flags & CF_RUNNING))
		1550	{
		1551	save_perl (aTHX_ &temp);
		1552	load_perl (aTHX_ coro);
		1553	}
		1554
		1555	{
		1556	dSP;
		1557	ENTER;
		1558	SAVETMPS;
		1559	PUSHMARK (SP);
		1560	PUTBACK;
		1561	if (ix)
		1562	eval_sv (coderef, 0);
		1563	else
		1564	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1565	SPAGAIN;
		1566	FREETMPS;
		1567	LEAVE;
		1568	PUTBACK;
		1569	}
		1570
		1571	if (!(coro->flags & CF_RUNNING))
		1572	{
		1573	save_perl (aTHX_ coro);
		1574	load_perl (aTHX_ &temp);
		1575	}
		1576	}
		1577	}
		1578
		1579	SV *
		1580	is_ready (Coro::State coro)
		1581	PROTOTYPE: $
		1582	ALIAS:
		1583	is_ready = CF_READY
		1584	is_running = CF_RUNNING
		1585	is_new = CF_NEW
		1586	is_destroyed = CF_DESTROYED
		1587	CODE:
		1588	RETVAL = boolSV (coro->flags & ix);
		1589	OUTPUT:
		1590	RETVAL
		1591
		1592	void
		1593	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1594
		1595	SV *
		1596	has_stack (Coro::State coro)
		1597	PROTOTYPE: $
		1598	CODE:
		1599	RETVAL = boolSV (!!coro->cctx);
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	int
		1604	is_traced (Coro::State coro)
		1605	PROTOTYPE: $
		1606	CODE:
		1607	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1608	OUTPUT:
		1609	RETVAL
		1610
		1611	IV
		1612	rss (Coro::State coro)
		1613	PROTOTYPE: $
		1614	ALIAS:
		1615	usecount = 1
		1616	CODE:
		1617	switch (ix)
		1618	{
		1619	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1620	case 1: RETVAL = coro->usecount; break;
		1621	}
		1622	OUTPUT:
		1623	RETVAL
		1624
		1625
1267	MODULE = Coro::State PACKAGE = Coro	1626	MODULE = Coro::State PACKAGE = Coro
1268		1627
1269	BOOT:	1628	BOOT:
1270	{	1629	{
1271	int i;	1630	int i;
		1631
		1632	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1633	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1634	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1635
		1636	coro_current = get_sv ("Coro::current", FALSE);
		1637	SvREADONLY_on (coro_current);
1272		1638
1273	coro_stash = gv_stashpv ("Coro", TRUE);	1639	coro_stash = gv_stashpv ("Coro", TRUE);
1274		1640
1275	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1276	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1277	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1278	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1279	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1645	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1280	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1646	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1281		1647
1282	coro_current = get_sv ("Coro::current", FALSE);
1283	SvREADONLY_on (coro_current);
1284
1285	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1286	coro_ready[i] = newAV ();	1649	coro_ready[i] = newAV ();
1287		1650
1288	{	1651	{
1289	SV *sv = perl_get_sv("Coro::API", 1);	1652	SV *sv = perl_get_sv("Coro::API", 1);
1290		1653
1291	coroapi.schedule = api_schedule;	1654	coroapi.schedule = api_schedule;
1292	coroapi.save = api_save;
1293	coroapi.cede = api_cede;	1655	coroapi.cede = api_cede;
1294	coroapi.cede_notself = api_cede_notself;	1656	coroapi.cede_notself = api_cede_notself;
1295	coroapi.ready = api_ready;	1657	coroapi.ready = api_ready;
1296	coroapi.is_ready = api_is_ready;	1658	coroapi.is_ready = api_is_ready;
1297	coroapi.nready = &coro_nready;	1659	coroapi.nready = &coro_nready;
…		…
1338	CODE:	1700	CODE:
1339	RETVAL = boolSV (api_ready (self));	1701	RETVAL = boolSV (api_ready (self));
1340	OUTPUT:	1702	OUTPUT:
1341	RETVAL	1703	RETVAL
1342		1704
1343	SV *
1344	is_ready (SV *self)
1345	PROTOTYPE: $
1346	CODE:
1347	RETVAL = boolSV (api_is_ready (self));
1348	OUTPUT:
1349	RETVAL
1350
1351	int	1705	int
1352	nready (...)	1706	nready (...)
1353	PROTOTYPE:	1707	PROTOTYPE:
1354	CODE:	1708	CODE:
1355	RETVAL = coro_nready;	1709	RETVAL = coro_nready;
1356	OUTPUT:	1710	OUTPUT:
1357	RETVAL	1711	RETVAL
1358		1712
		1713	# for async_pool speedup
		1714	void
		1715	_pool_1 (SV *cb)
		1716	CODE:
		1717	{
		1718	struct coro *coro = SvSTATE (coro_current);
		1719	HV *hv = (HV *)SvRV (coro_current);
		1720	AV *defav = GvAV (PL_defgv);
		1721	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1722	AV *invoke_av;
		1723	int i, len;
		1724
		1725	if (!invoke)
		1726	croak ("\3terminate\2\n");
		1727
		1728	SvREFCNT_dec (coro->asp_deffh);
		1729	coro->asp_deffh = SvREFCNT_inc (PL_defoutgv);
		1730
		1731	hv_store (hv, "desc", sizeof ("desc") - 1,
		1732	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1733
		1734	invoke_av = (AV *)SvRV (invoke);
		1735	len = av_len (invoke_av);
		1736
		1737	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1738
		1739	if (len > 0)
		1740	{
		1741	av_fill (defav, len - 1);
		1742	for (i = 0; i < len; ++i)
		1743	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1744	}
		1745
		1746	SvREFCNT_dec (invoke);
		1747	}
		1748
		1749	void
		1750	_pool_2 (SV *cb)
		1751	CODE:
		1752	{
		1753	struct coro *coro = SvSTATE (coro_current);
		1754
		1755	sv_setsv (cb, &PL_sv_undef);
		1756
		1757	SvREFCNT_dec (PL_defoutgv); PL_defoutgv = coro->asp_deffh;
		1758	coro->asp_deffh = 0;
		1759
		1760	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1761	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1762	croak ("\3terminate\2\n");
		1763
		1764	av_clear (GvAV (PL_defgv));
		1765	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1766	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1767
		1768	coro->prio = 0;
		1769
		1770	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1771	api_trace (coro_current, 0);
		1772
		1773	av_push (av_async_pool, newSVsv (coro_current));
		1774	}
		1775
		1776
1359	MODULE = Coro::State PACKAGE = Coro::AIO	1777	MODULE = Coro::State PACKAGE = Coro::AIO
1360		1778
1361	SV *	1779	SV *
1362	_get_state ()	1780	_get_state ()
1363	CODE:	1781	CODE:

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