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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC vs.
Revision 1.180 by root, Wed Oct 3 17:12:20 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	IO *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 switches to this coro */
		207
184	/* coro process data */	208	/* coro process data */
185	int prio;	209	int prio;
		210
		211	/* linked list */
		212	struct coro *next, *prev;
		213	HV *hv; /* the perl hash associated with this coro, if any */
186	};	214	};
187		215
188	typedef struct coro *Coro__State;	216	typedef struct coro *Coro__State;
189	typedef struct coro *Coro__State_or_hashref;	217	typedef struct coro *Coro__State_or_hashref;
190		218
…		…
199		227
200	/* for Coro.pm */	228	/* for Coro.pm */
201	static SV *coro_current;	229	static SV *coro_current;
202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	230	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
203	static int coro_nready;	231	static int coro_nready;
		232	static struct coro *coro_first;
204		233
205	/** lowlevel stuff **********************************************************/	234	/** lowlevel stuff **********************************************************/
206		235
207	static AV *	236	static AV *
208	coro_clone_padlist (CV *cv)	237	coro_clone_padlist (pTHX_ CV *cv)
209	{	238	{
210	AV *padlist = CvPADLIST (cv);	239	AV *padlist = CvPADLIST (cv);
211	AV *newpadlist, *newpad;	240	AV *newpadlist, *newpad;
212		241
213	newpadlist = newAV ();	242	newpadlist = newAV ();
…		…
225		254
226	return newpadlist;	255	return newpadlist;
227	}	256	}
228		257
229	static void	258	static void
230	free_padlist (AV *padlist)	259	free_padlist (pTHX_ AV *padlist)
231	{	260	{
232	/* may be during global destruction */	261	/* may be during global destruction */
233	if (SvREFCNT (padlist))	262	if (SvREFCNT (padlist))
234	{	263	{
235	I32 i = AvFILLp (padlist);	264	I32 i = AvFILLp (padlist);
…		…
256	AV *padlist;	285	AV *padlist;
257	AV *av = (AV *)mg->mg_obj;	286	AV *av = (AV *)mg->mg_obj;
258		287
259	/* casting is fun. */	288	/* casting is fun. */
260	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	289	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
261	free_padlist (padlist);	290	free_padlist (aTHX_ padlist);
262		291
263	SvREFCNT_dec (av);	292	SvREFCNT_dec (av);
264		293
265	return 0;	294	return 0;
266	}	295	}
…		…
274	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	303	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
275	? SvMAGIC (cv) \	304	? SvMAGIC (cv) \
276	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	305	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
277	: 0	306	: 0
278		307
		308	static struct coro *
		309	SvSTATE_ (pTHX_ SV *coro)
		310	{
		311	HV *stash;
		312	MAGIC *mg;
		313
		314	if (SvROK (coro))
		315	coro = SvRV (coro);
		316
		317	if (SvTYPE (coro) != SVt_PVHV)
		318	croak ("Coro::State object required");
		319
		320	stash = SvSTASH (coro);
		321	if (stash != coro_stash && stash != coro_state_stash)
		322	{
		323	/* very slow, but rare, check */
		324	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		325	croak ("Coro::State object required");
		326	}
		327
		328	mg = CORO_MAGIC (coro);
		329	return (struct coro *)mg->mg_ptr;
		330	}
		331
		332	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		333
279	/* the next two functions merely cache the padlists */	334	/* the next two functions merely cache the padlists */
280	static void	335	static void
281	get_padlist (CV *cv)	336	get_padlist (pTHX_ CV *cv)
282	{	337	{
283	MAGIC *mg = CORO_MAGIC (cv);	338	MAGIC *mg = CORO_MAGIC (cv);
284	AV *av;	339	AV *av;
285		340
286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	341	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	342	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
288	else	343	else
289	{	344	{
290	#if PREFER_PERL_FUNCTIONS	345	#if CORO_PREFER_PERL_FUNCTIONS
291	/* this is probably cleaner, but also slower? */	346	/* this is probably cleaner, but also slower? */
292	CV *cp = Perl_cv_clone (cv);	347	CV *cp = Perl_cv_clone (cv);
293	CvPADLIST (cv) = CvPADLIST (cp);	348	CvPADLIST (cv) = CvPADLIST (cp);
294	CvPADLIST (cp) = 0;	349	CvPADLIST (cp) = 0;
295	SvREFCNT_dec (cp);	350	SvREFCNT_dec (cp);
296	#else	351	#else
297	CvPADLIST (cv) = coro_clone_padlist (cv);	352	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
298	#endif	353	#endif
299	}	354	}
300	}	355	}
301		356
302	static void	357	static void
303	put_padlist (CV *cv)	358	put_padlist (pTHX_ CV *cv)
304	{	359	{
305	MAGIC *mg = CORO_MAGIC (cv);	360	MAGIC *mg = CORO_MAGIC (cv);
306	AV *av;	361	AV *av;
307		362
308	if (!mg)	363	if (!mg)
…		…
321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	376	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
322	}	377	}
323		378
324	/** load & save, init *******************************************************/	379	/** load & save, init *******************************************************/
325		380
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	381	static void
332	load_perl (Coro__State c)	382	load_perl (pTHX_ Coro__State c)
333	{	383	{
334	#define VAR(name,type) PL_ ## name = c->name;	384	#define VAR(name,type) PL_ ## name = c->name;
335	# include "state.h"	385	# include "state.h"
336	#undef VAR	386	#undef VAR
337		387
338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	388	GvSV (PL_defgv) = c->defsv;
339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	389	GvAV (PL_defgv) = c->defav;
340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	390	GvSV (PL_errgv) = c->errsv;
341	if (c->irssv)	391	PL_defoutgv = c->deffh;
342	{	392	PL_rs = c->irssv;
343	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	393	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		394
353	{	395	{
354	dSP;	396	dSP;
355	CV *cv;	397	CV *cv;
356		398
357	/* now do the ugly restore mess */	399	/* now do the ugly restore mess */
358	while ((cv = (CV *)POPs))	400	while ((cv = (CV *)POPs))
359	{	401	{
360	put_padlist (cv); /* mark this padlist as available */	402	put_padlist (aTHX_ cv); /* mark this padlist as available */
361	CvDEPTH (cv) = PTR2IV (POPs);	403	CvDEPTH (cv) = PTR2IV (POPs);
362	CvPADLIST (cv) = (AV *)POPs;	404	CvPADLIST (cv) = (AV *)POPs;
363	}	405	}
364		406
365	PUTBACK;	407	PUTBACK;
366	}	408	}
367	}	409	}
368		410
369	static void	411	static void
370	save_perl (Coro__State c)	412	save_perl (pTHX_ Coro__State c)
371	{	413	{
372	{	414	{
373	dSP;	415	dSP;
374	I32 cxix = cxstack_ix;	416	I32 cxix = cxstack_ix;
375	PERL_CONTEXT *ccstk = cxstack;	417	PERL_CONTEXT *ccstk = cxstack;
…		…
378	/*	420	/*
379	* the worst thing you can imagine happens first - we have to save	421	* the worst thing you can imagine happens first - we have to save
380	* (and reinitialize) all cv's in the whole callchain :(	422	* (and reinitialize) all cv's in the whole callchain :(
381	*/	423	*/
382		424
383	EXTEND (SP, 3 + 1);
384	PUSHs (Nullsv);	425	XPUSHs (Nullsv);
385	/* this loop was inspired by pp_caller */	426	/* this loop was inspired by pp_caller */
386	for (;;)	427	for (;;)
387	{	428	{
388	while (cxix >= 0)	429	while (cxix >= 0)
389	{	430	{
390	PERL_CONTEXT *cx = &ccstk[cxix--];	431	PERL_CONTEXT *cx = &ccstk[cxix--];
391		432
392	if (CxTYPE (cx) == CXt_SUB)	433	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
393	{	434	{
394	CV *cv = cx->blk_sub.cv;	435	CV *cv = cx->blk_sub.cv;
395		436
396	if (CvDEPTH (cv))	437	if (CvDEPTH (cv))
397	{	438	{
…		…
399	PUSHs ((SV *)CvPADLIST (cv));	440	PUSHs ((SV *)CvPADLIST (cv));
400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	441	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
401	PUSHs ((SV *)cv);	442	PUSHs ((SV *)cv);
402		443
403	CvDEPTH (cv) = 0;	444	CvDEPTH (cv) = 0;
404	get_padlist (cv);	445	get_padlist (aTHX_ cv);
405	}	446	}
406	}	447	}
407	}	448	}
408		449
409	if (top_si->si_type == PERLSI_MAIN)	450	if (top_si->si_type == PERLSI_MAIN)
410	break;	451	break;
411		452
412	top_si = top_si->si_prev;	453	top_si = top_si->si_prev;
413	ccstk = top_si->si_cxstack;	454	ccstk = top_si->si_cxstack;
414	cxix = top_si->si_cxix;	455	cxix = top_si->si_cxix;
415	}	456	}
416		457
417	PUTBACK;	458	PUTBACK;
418	}	459	}
419		460
420	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	461	c->defav = GvAV (PL_defgv);
421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	462	c->defsv = DEFSV;
422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	463	c->errsv = ERRSV;
423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	464	c->deffh = PL_defoutgv;
		465	c->irssv = PL_rs;
		466	c->irssv_sv = GvSV (irsgv);
424		467
425	#define VAR(name,type)c->name = PL_ ## name;	468	#define VAR(name,type)c->name = PL_ ## name;
426	# include "state.h"	469	# include "state.h"
427	#undef VAR	470	#undef VAR
428	}	471	}
…		…
431	* allocate various perl stacks. This is an exact copy	474	* allocate various perl stacks. This is an exact copy
432	* of perl.c:init_stacks, except that it uses less memory	475	* of perl.c:init_stacks, except that it uses less memory
433	* on the (sometimes correct) assumption that coroutines do	476	* on the (sometimes correct) assumption that coroutines do
434	* not usually need a lot of stackspace.	477	* not usually need a lot of stackspace.
435	*/	478	*/
436	#if PREFER_PERL_FUNCTIONS	479	#if CORO_PREFER_PERL_FUNCTIONS
437	# define coro_init_stacks init_stacks	480	# define coro_init_stacks init_stacks
438	#else	481	#else
439	static void	482	static void
440	coro_init_stacks ()	483	coro_init_stacks (pTHX)
441	{	484	{
442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	485	PL_curstackinfo = new_stackinfo(64, 6);
443	PL_curstackinfo->si_type = PERLSI_MAIN;	486	PL_curstackinfo->si_type = PERLSI_MAIN;
444	PL_curstack = PL_curstackinfo->si_stack;	487	PL_curstack = PL_curstackinfo->si_stack;
445	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
446		489
447	PL_stack_base = AvARRAY(PL_curstack);	490	PL_stack_base = AvARRAY(PL_curstack);
448	PL_stack_sp = PL_stack_base;	491	PL_stack_sp = PL_stack_base;
449	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
450		493
451	New(50,PL_tmps_stack,128,SV*);	494	New(50,PL_tmps_stack,64,SV*);
452	PL_tmps_floor = -1;	495	PL_tmps_floor = -1;
453	PL_tmps_ix = -1;	496	PL_tmps_ix = -1;
454	PL_tmps_max = 128;	497	PL_tmps_max = 64;
455		498
456	New(54,PL_markstack,32,I32);	499	New(54,PL_markstack,16,I32);
457	PL_markstack_ptr = PL_markstack;	500	PL_markstack_ptr = PL_markstack;
458	PL_markstack_max = PL_markstack + 32;	501	PL_markstack_max = PL_markstack + 16;
459		502
460	#ifdef SET_MARK_OFFSET	503	#ifdef SET_MARK_OFFSET
461	SET_MARK_OFFSET;	504	SET_MARK_OFFSET;
462	#endif	505	#endif
463		506
464	New(54,PL_scopestack,32,I32);	507	New(54,PL_scopestack,16,I32);
465	PL_scopestack_ix = 0;	508	PL_scopestack_ix = 0;
466	PL_scopestack_max = 32;	509	PL_scopestack_max = 16;
467		510
468	New(54,PL_savestack,64,ANY);	511	New(54,PL_savestack,64,ANY);
469	PL_savestack_ix = 0;	512	PL_savestack_ix = 0;
470	PL_savestack_max = 64;	513	PL_savestack_max = 64;
471		514
472	#if !PERL_VERSION_ATLEAST (5,9,0)	515	#if !PERL_VERSION_ATLEAST (5,9,0)
473	New(54,PL_retstack,16,OP*);	516	New(54,PL_retstack,4,OP*);
474	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
475	PL_retstack_max = 16;	518	PL_retstack_max = 4;
476	#endif	519	#endif
477	}	520	}
478	#endif	521	#endif
479		522
480	/*	523	/*
481	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
482	*/	525	*/
483	static void	526	static void
484	coro_destroy_stacks ()	527	coro_destroy_stacks (pTHX)
485	{	528	{
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)	529	while (PL_curstackinfo->si_next)
504	PL_curstackinfo = PL_curstackinfo->si_next;	530	PL_curstackinfo = PL_curstackinfo->si_next;
505		531
506	while (PL_curstackinfo)	532	while (PL_curstackinfo)
507	{	533	{
…		…
522	#if !PERL_VERSION_ATLEAST (5,9,0)	548	#if !PERL_VERSION_ATLEAST (5,9,0)
523	Safefree (PL_retstack);	549	Safefree (PL_retstack);
524	#endif	550	#endif
525	}	551	}
526		552
		553	static size_t
		554	coro_rss (pTHX_ struct coro *coro)
		555	{
		556	size_t rss = sizeof (coro);
		557
		558	if (coro->mainstack)
		559	{
		560	if (coro->flags & CF_RUNNING)
		561	{
		562	#define VAR(name,type)coro->name = PL_ ## name;
		563	# include "state.h"
		564	#undef VAR
		565	}
		566
		567	rss += sizeof (coro->curstackinfo);
		568	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		570	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		571	rss += coro->tmps_max * sizeof (SV *);
		572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		573	rss += coro->scopestack_max * sizeof (I32);
		574	rss += coro->savestack_max * sizeof (ANY);
		575
		576	#if !PERL_VERSION_ATLEAST (5,9,0)
		577	rss += coro->retstack_max * sizeof (OP *);
		578	#endif
		579	}
		580
		581	return rss;
		582	}
		583
527	/** coroutine stack handling ************************************************/	584	/** coroutine stack handling ************************************************/
528		585
529	static void	586	static void
530	setup_coro (struct coro *coro)	587	coro_setup (pTHX_ struct coro *coro)
531	{	588	{
532	/*	589	/*
533	* emulate part of the perl startup here.	590	* emulate part of the perl startup here.
534	*/	591	*/
535
536	coro_init_stacks ();	592	coro_init_stacks (aTHX);
537		593
		594	PL_runops = RUNOPS_DEFAULT;
538	PL_curcop = &PL_compiling;	595	PL_curcop = &PL_compiling;
539	PL_in_eval = EVAL_NULL;	596	PL_in_eval = EVAL_NULL;
		597	PL_comppad = 0;
540	PL_curpm = 0;	598	PL_curpm = 0;
541	PL_localizing = 0;	599	PL_localizing = 0;
542	PL_dirty = 0;	600	PL_dirty = 0;
543	PL_restartop = 0;	601	PL_restartop = 0;
		602
		603	GvSV (PL_defgv) = NEWSV (0, 0);
		604	GvAV (PL_defgv) = coro->args; coro->args = 0;
		605	GvSV (PL_errgv) = NEWSV (0, 0);
		606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	PL_defoutgv = newGVgen ("Coro");
		612	GvIOp(PL_defoutgv) = io;
		613	IoTYPE (io) = IoTYPE_WRONLY;
		614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		615	IoFLAGS (io) |= IOf_FLUSH;
		616	}
544		617
545	{	618	{
546	dSP;	619	dSP;
547	LOGOP myop;	620	LOGOP myop;
548		621
549	SvREFCNT_dec (GvAV (PL_defgv));
550	GvAV (PL_defgv) = coro->args; coro->args = 0;
551
552	Zero (&myop, 1, LOGOP);	622	Zero (&myop, 1, LOGOP);
553	myop.op_next = Nullop;	623	myop.op_next = Nullop;
554	myop.op_flags = OPf_WANT_VOID;	624	myop.op_flags = OPf_WANT_VOID;
555		625
556	PUSHMARK (SP);	626	PUSHMARK (SP);
557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	627	XPUSHs (av_shift (GvAV (PL_defgv)));
558	PUTBACK;	628	PUTBACK;
559	PL_op = (OP *)&myop;	629	PL_op = (OP *)&myop;
560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	630	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561	SPAGAIN;	631	SPAGAIN;
562	}	632	}
563		633
564	ENTER; /* necessary e.g. for dounwind */	634	ENTER; /* necessary e.g. for dounwind */
565	}	635	}
566		636
567	static void	637	static void
		638	coro_destroy (pTHX_ struct coro *coro)
		639	{
		640	if (!IN_DESTRUCT)
		641	{
		642	/* restore all saved variables and stuff */
		643	LEAVE_SCOPE (0);
		644	assert (PL_tmps_floor == -1);
		645
		646	/* free all temporaries */
		647	FREETMPS;
		648	assert (PL_tmps_ix == -1);
		649
		650	/* unwind all extra stacks */
		651	POPSTACK_TO (PL_mainstack);
		652
		653	/* unwind main stack */
		654	dounwind (-1);
		655	}
		656
		657	SvREFCNT_dec (GvSV (PL_defgv));
		658	SvREFCNT_dec (GvAV (PL_defgv));
		659	SvREFCNT_dec (GvSV (PL_errgv));
		660	SvREFCNT_dec (PL_defoutgv);
		661	SvREFCNT_dec (PL_rs);
		662	SvREFCNT_dec (GvSV (irsgv));
		663
		664	coro_destroy_stacks (aTHX);
		665	}
		666
		667	static void
568	free_coro_mortal ()	668	free_coro_mortal (pTHX)
569	{	669	{
570	if (coro_mortal)	670	if (coro_mortal)
571	{	671	{
572	SvREFCNT_dec (coro_mortal);	672	SvREFCNT_dec (coro_mortal);
573	coro_mortal = 0;	673	coro_mortal = 0;
574	}	674	}
575	}	675	}
576		676
		677	static int
		678	runops_trace (pTHX)
		679	{
		680	COP *oldcop = 0;
		681	int oldcxix = -2;
		682	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		683	coro_cctx *cctx = coro->cctx;
		684
		685	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		686	{
		687	PERL_ASYNC_CHECK ();
		688
		689	if (cctx->flags & CC_TRACE_ALL)
		690	{
		691	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		692	{
		693	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		694	SV **bot, **top;
		695	AV *av = newAV (); /* return values */
		696	SV **cb;
		697	dSP;
		698
		699	GV *gv = CvGV (cx->blk_sub.cv);
		700	SV *fullname = sv_2mortal (newSV (0));
		701	if (isGV (gv))
		702	gv_efullname3 (fullname, gv, 0);
		703
		704	bot = PL_stack_base + cx->blk_oldsp + 1;
		705	top = cx->blk_gimme == G_ARRAY ? SP + 1
		706	: cx->blk_gimme == G_SCALAR ? bot + 1
		707	: bot;
		708
		709	while (bot < top)
		710	av_push (av, SvREFCNT_inc (*bot++));
		711
		712	PL_runops = RUNOPS_DEFAULT;
		713	ENTER;
		714	SAVETMPS;
		715	EXTEND (SP, 3);
		716	PUSHMARK (SP);
		717	PUSHs (&PL_sv_no);
		718	PUSHs (fullname);
		719	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		720	PUTBACK;
		721	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		722	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		723	SPAGAIN;
		724	FREETMPS;
		725	LEAVE;
		726	PL_runops = runops_trace;
		727	}
		728
		729	if (oldcop != PL_curcop)
		730	{
		731	oldcop = PL_curcop;
		732
		733	if (PL_curcop != &PL_compiling)
		734	{
		735	SV **cb;
		736
		737	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		738	{
		739	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		740
		741	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		742	{
		743	runops_proc_t old_runops = PL_runops;
		744	dSP;
		745	GV *gv = CvGV (cx->blk_sub.cv);
		746	SV *fullname = sv_2mortal (newSV (0));
		747
		748	if (isGV (gv))
		749	gv_efullname3 (fullname, gv, 0);
		750
		751	PL_runops = RUNOPS_DEFAULT;
		752	ENTER;
		753	SAVETMPS;
		754	EXTEND (SP, 3);
		755	PUSHMARK (SP);
		756	PUSHs (&PL_sv_yes);
		757	PUSHs (fullname);
		758	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		759	PUTBACK;
		760	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		761	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		762	SPAGAIN;
		763	FREETMPS;
		764	LEAVE;
		765	PL_runops = runops_trace;
		766	}
		767
		768	oldcxix = cxstack_ix;
		769	}
		770
		771	if (cctx->flags & CC_TRACE_LINE)
		772	{
		773	dSP;
		774
		775	PL_runops = RUNOPS_DEFAULT;
		776	ENTER;
		777	SAVETMPS;
		778	EXTEND (SP, 3);
		779	PL_runops = RUNOPS_DEFAULT;
		780	PUSHMARK (SP);
		781	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		782	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		783	PUTBACK;
		784	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		785	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		786	SPAGAIN;
		787	FREETMPS;
		788	LEAVE;
		789	PL_runops = runops_trace;
		790	}
		791	}
		792	}
		793	}
		794	}
		795
		796	TAINT_NOT;
		797	return 0;
		798	}
		799
577	/* inject a fake call to Coro::State::_cctx_init into the execution */	800	/* inject a fake call to Coro::State::_cctx_init into the execution */
		801	/* _cctx_init should be careful, as it could be called at almost any time */
		802	/* during execution of a perl program */
578	static void NOINLINE	803	static void NOINLINE
579	prepare_cctx (coro_cctx *cctx)	804	prepare_cctx (pTHX_ coro_cctx *cctx)
580	{	805	{
581	dSP;	806	dSP;
582	LOGOP myop;	807	LOGOP myop;
		808
		809	PL_top_env = &PL_start_env;
		810
		811	if (cctx->flags & CC_TRACE)
		812	PL_runops = runops_trace;
583		813
584	Zero (&myop, 1, LOGOP);	814	Zero (&myop, 1, LOGOP);
585	myop.op_next = PL_op;	815	myop.op_next = PL_op;
586	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	816	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
587		817
…		…
593	PL_op = (OP *)&myop;	823	PL_op = (OP *)&myop;
594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	824	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
595	SPAGAIN;	825	SPAGAIN;
596	}	826	}
597		827
		828	/*
		829	* this is a _very_ stripped down perl interpreter ;)
		830	*/
598	static void	831	static void
599	coro_run (void *arg)	832	coro_run (void *arg)
600	{	833	{
		834	dTHX;
		835
601	/* coro_run is the alternative tail of transfer(), so unlock here. */	836	/* coro_run is the alternative tail of transfer(), so unlock here. */
602	UNLOCK;	837	UNLOCK;
603		838
604	/*	839	/* we now skip the entersub that lead to transfer() */
605	* this is a _very_ stripped down perl interpreter ;)	840	PL_op = PL_op->op_next;
606	*/
607	PL_top_env = &PL_start_env;
608		841
609	/* inject call to cctx_init */	842	/* inject a fake subroutine call to cctx_init */
610	prepare_cctx ((coro_cctx *)arg);	843	prepare_cctx (aTHX_ (coro_cctx *)arg);
611		844
612	/* somebody will hit me for both perl_run and PL_restartop */	845	/* somebody or something will hit me for both perl_run and PL_restartop */
613	PL_restartop = PL_op;	846	PL_restartop = PL_op;
614	perl_run (PL_curinterp);	847	perl_run (PL_curinterp);
615		848
616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	849	/*
617	abort ();	850	* If perl-run returns we assume exit() was being called or the coro
		851	* fell off the end, which seems to be the only valid (non-bug)
		852	* reason for perl_run to return. We try to exit by jumping to the
		853	* bootstrap-time "top" top_env, as we cannot restore the "main"
		854	* coroutine as Coro has no such concept
		855	*/
		856	PL_top_env = main_top_env;
		857	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
618	}	858	}
619		859
620	static coro_cctx *	860	static coro_cctx *
621	cctx_new ()	861	cctx_new ()
622	{	862	{
623	coro_cctx *cctx;	863	coro_cctx *cctx;
		864	void *stack_start;
		865	size_t stack_size;
624		866
625	++cctx_count;	867	++cctx_count;
626		868
627	Newz (0, cctx, 1, coro_cctx);	869	Newz (0, cctx, 1, coro_cctx);
628		870
629	#if HAVE_MMAP	871	#if HAVE_MMAP
630		872
631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	873	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632	/* mmap supposedly does allocate-on-write for us */	874	/* 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);	875	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
634		876
635	if (cctx->sptr == (void *)-1)	877	if (cctx->sptr != (void *)-1)
636	{
637	perror ("FATAL: unable to mmap stack for coroutine");
638	_exit (EXIT_FAILURE);
639	}	878	{
640
641	# if STACKGUARD	879	# if CORO_STACKGUARD
642	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	880	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
643	# endif	881	# endif
		882	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		883	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		884	cctx->flags |= CC_MAPPED;
		885	}
		886	else
		887	#endif
		888	{
		889	cctx->ssize = coro_stacksize * (long)sizeof (long);
		890	New (0, cctx->sptr, coro_stacksize, long);
644		891
645	#else
646
647	cctx->ssize = STACKSIZE * (long)sizeof (long);
648	New (0, cctx->sptr, STACKSIZE, long);
649
650	if (!cctx->sptr)	892	if (!cctx->sptr)
651	{	893	{
652	perror ("FATAL: unable to malloc stack for coroutine");	894	perror ("FATAL: unable to allocate stack for coroutine");
653	_exit (EXIT_FAILURE);	895	_exit (EXIT_FAILURE);
654	}	896	}
655		897
656	#endif	898	stack_start = cctx->sptr;
		899	stack_size = cctx->ssize;
		900	}
657		901
658	#if USE_VALGRIND	902	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);	903	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
666		904
667	return cctx;	905	return cctx;
668	}	906	}
669		907
670	static void	908	static void
…		…
673	if (!cctx)	911	if (!cctx)
674	return;	912	return;
675		913
676	--cctx_count;	914	--cctx_count;
677		915
678	#if USE_VALGRIND	916	#if CORO_USE_VALGRIND
679	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	917	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680	#endif	918	#endif
681		919
682	#if HAVE_MMAP	920	#if HAVE_MMAP
		921	if (cctx->flags & CC_MAPPED)
683	munmap (cctx->sptr, cctx->ssize);	922	munmap (cctx->sptr, cctx->ssize);
684	#else	923	else
		924	#endif
685	Safefree (cctx->sptr);	925	Safefree (cctx->sptr);
686	#endif
687		926
688	Safefree (cctx);	927	Safefree (cctx);
689	}	928	}
690		929
691	static coro_cctx *	930	static coro_cctx *
692	cctx_get ()	931	cctx_get (pTHX)
693	{	932	{
694	coro_cctx *cctx;
695
696	if (cctx_first)	933	while (cctx_first)
697	{	934	{
698	cctx = cctx_first;	935	coro_cctx *cctx = cctx_first;
699	cctx_first = cctx->next;	936	cctx_first = cctx->next;
700	--cctx_idle;	937	--cctx_idle;
701	}	938
702	else	939	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
703	{	940	return cctx;
704	cctx = cctx_new ();	941
705	PL_op = PL_op->op_next;	942	cctx_destroy (cctx);
706	}	943	}
707		944
708	return cctx;	945	return cctx_new ();
709	}	946	}
710		947
711	static void	948	static void
712	cctx_put (coro_cctx *cctx)	949	cctx_put (coro_cctx *cctx)
713	{	950	{
…		…
716	{	953	{
717	coro_cctx *first = cctx_first;	954	coro_cctx *first = cctx_first;
718	cctx_first = first->next;	955	cctx_first = first->next;
719	--cctx_idle;	956	--cctx_idle;
720		957
721	assert (!first->inuse);
722	cctx_destroy (first);	958	cctx_destroy (first);
723	}	959	}
724		960
725	++cctx_idle;	961	++cctx_idle;
726	cctx->next = cctx_first;	962	cctx->next = cctx_first;
727	cctx_first = cctx;	963	cctx_first = cctx;
728	}	964	}
729		965
730	/** coroutine switching *****************************************************/	966	/** coroutine switching *****************************************************/
731		967
732	/* never call directly, always through the coro_state_transfer global variable */
733	static void NOINLINE	968	static void NOINLINE
		969	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		970	{
		971	if (prev != next)
		972	{
		973	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		974	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		975
		976	if (next->flags & CF_RUNNING)
		977	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		978
		979	if (next->flags & CF_DESTROYED)
		980	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		981
		982	if (PL_lex_state != LEX_NOTPARSING)
		983	croak ("Coro::State::transfer called while parsing, but this is not supported");
		984	}
		985	}
		986
		987	/* always use the TRANSFER macro */
		988	static void NOINLINE
734	transfer (struct coro *prev, struct coro *next)	989	transfer (pTHX_ struct coro *prev, struct coro *next)
735	{	990	{
736	dSTACKLEVEL;	991	dSTACKLEVEL;
737		992
738	/* sometimes transfer is only called to set idle_sp */	993	/* sometimes transfer is only called to set idle_sp */
739	if (!next)	994	if (!next)
…		…
747		1002
748	if (prev->flags & CF_NEW)	1003	if (prev->flags & CF_NEW)
749	{	1004	{
750	/* create a new empty context */	1005	/* create a new empty context */
751	Newz (0, prev->cctx, 1, coro_cctx);	1006	Newz (0, prev->cctx, 1, coro_cctx);
752	prev->cctx->inuse = 1;
753	prev->flags &= ~CF_NEW;	1007	prev->flags &= ~CF_NEW;
754	prev->flags |= CF_RUNNING;	1008	prev->flags |= CF_RUNNING;
755	}	1009	}
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		1010
767	prev->flags &= ~CF_RUNNING;	1011	prev->flags &= ~CF_RUNNING;
768	next->flags |= CF_RUNNING;	1012	next->flags |= CF_RUNNING;
769		1013
770	LOCK;	1014	LOCK;
…		…
772	if (next->flags & CF_NEW)	1016	if (next->flags & CF_NEW)
773	{	1017	{
774	/* need to start coroutine */	1018	/* need to start coroutine */
775	next->flags &= ~CF_NEW;	1019	next->flags &= ~CF_NEW;
776	/* first get rid of the old state */	1020	/* first get rid of the old state */
777	save_perl (prev);	1021	save_perl (aTHX_ prev);
778	/* setup coroutine call */	1022	/* setup coroutine call */
779	setup_coro (next);	1023	coro_setup (aTHX_ next);
780	/* need a new stack */
781	assert (!next->cctx);
782	}	1024	}
783	else	1025	else
784	{	1026	{
785	/* coroutine already started */	1027	/* coroutine already started */
786	save_perl (prev);	1028	save_perl (aTHX_ prev);
787	load_perl (next);	1029	load_perl (aTHX_ next);
788	}	1030	}
789		1031
790	prev__cctx = prev->cctx;	1032	prev__cctx = prev->cctx;
791		1033
792	/* possibly "free" the cctx */	1034	/* possibly "free" the cctx */
793	if (prev__cctx->idle_sp == STACKLEVEL)	1035	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
794	{	1036	{
795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1037	/* 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));	1038	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
797		1039
798	prev->cctx = 0;	1040	prev->cctx = 0;
799		1041
800	cctx_put (prev__cctx);	1042	cctx_put (prev__cctx);
801	prev__cctx->inuse = 0;
802	}	1043	}
803		1044
		1045	++next->usecount;
		1046
804	if (!next->cctx)	1047	if (!next->cctx)
805	{
806	next->cctx = cctx_get ();	1048	next->cctx = cctx_get (aTHX);
807	assert (!next->cctx->inuse);
808	next->cctx->inuse = 1;
809	}
810		1049
811	if (prev__cctx != next->cctx)	1050	if (prev__cctx != next->cctx)
812	{	1051	{
813	prev__cctx->top_env = PL_top_env;	1052	prev__cctx->top_env = PL_top_env;
814	PL_top_env = next->cctx->top_env;	1053	PL_top_env = next->cctx->top_env;
815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1054	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
816	}	1055	}
817		1056
818	free_coro_mortal ();	1057	free_coro_mortal (aTHX);
819	UNLOCK;	1058	UNLOCK;
820	}	1059	}
821	}	1060	}
822		1061
823	struct transfer_args	1062	struct transfer_args
824	{	1063	{
825	struct coro *prev, *next;	1064	struct coro *prev, *next;
826	};	1065	};
827		1066
828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1067	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1068	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
829		1069
830	/** high level stuff ********************************************************/	1070	/** high level stuff ********************************************************/
831		1071
832	static int	1072	static int
833	coro_state_destroy (struct coro *coro)	1073	coro_state_destroy (pTHX_ struct coro *coro)
834	{	1074	{
835	if (coro->flags & CF_DESTROYED)	1075	if (coro->flags & CF_DESTROYED)
836	return 0;	1076	return 0;
837		1077
838	coro->flags |= CF_DESTROYED;	1078	coro->flags |= CF_DESTROYED;
839		1079
840	if (coro->flags & CF_READY)	1080	if (coro->flags & CF_READY)
841	{	1081	{
842	/* reduce nready, as destroying a ready coro effectively unreadies it */	1082	/* reduce nready, as destroying a ready coro effectively unreadies it */
843	/* alternative: look through all ready queues and remove it */	1083	/* alternative: look through all ready queues and remove the coro */
844	LOCK;	1084	LOCK;
845	--coro_nready;	1085	--coro_nready;
846	UNLOCK;	1086	UNLOCK;
847	}	1087	}
848	else	1088	else
849	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1089	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
850		1090
851	if (coro->mainstack && coro->mainstack != main_mainstack)	1091	if (coro->mainstack && coro->mainstack != main_mainstack)
852	{	1092	{
853	assert (!(coro->flags & CF_RUNNING));
854
855	struct coro temp;	1093	struct coro temp;
856	Zero (&temp, 1, struct coro);
857	temp.save = CORO_SAVE_ALL;
858		1094
859	if (coro->flags & CF_RUNNING)	1095	if (coro->flags & CF_RUNNING)
860	croak ("FATAL: tried to destroy currently running coroutine");	1096	croak ("FATAL: tried to destroy currently running coroutine");
861		1097
862	save_perl (&temp);	1098	save_perl (aTHX_ &temp);
863	load_perl (coro);	1099	load_perl (aTHX_ coro);
864		1100
865	coro_destroy_stacks ();	1101	coro_destroy (aTHX_ coro);
866		1102
867	load_perl (&temp); /* this will get rid of defsv etc.. */	1103	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
868		1104
869	coro->mainstack = 0;	1105	coro->mainstack = 0;
870	}	1106	}
871		1107
872	cctx_destroy (coro->cctx);	1108	cctx_destroy (coro->cctx);
873	SvREFCNT_dec (coro->args);	1109	SvREFCNT_dec (coro->args);
874		1110
		1111	if (coro->next) coro->next->prev = coro->prev;
		1112	if (coro->prev) coro->prev->next = coro->next;
		1113	if (coro == coro_first) coro_first = coro->next;
		1114
875	return 1;	1115	return 1;
876	}	1116	}
877		1117
878	static int	1118	static int
879	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1119	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
880	{	1120	{
881	struct coro *coro = (struct coro *)mg->mg_ptr;	1121	struct coro *coro = (struct coro *)mg->mg_ptr;
882	mg->mg_ptr = 0;	1122	mg->mg_ptr = 0;
883		1123
		1124	coro->hv = 0;
		1125
884	if (--coro->refcnt < 0)	1126	if (--coro->refcnt < 0)
885	{	1127	{
886	coro_state_destroy (coro);	1128	coro_state_destroy (aTHX_ coro);
887	Safefree (coro);	1129	Safefree (coro);
888	}	1130	}
889		1131
890	return 0;	1132	return 0;
891	}	1133	}
…		…
909	#else	1151	#else
910	# define MGf_DUP 0	1152	# define MGf_DUP 0
911	#endif	1153	#endif
912	};	1154	};
913		1155
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	1156	static void
937	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1157	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
938	{	1158	{
939	ta->prev = SvSTATE (prev_sv);	1159	ta->prev = SvSTATE (prev_sv);
940	ta->next = SvSTATE (next_sv);	1160	ta->next = SvSTATE (next_sv);
		1161	TRANSFER_CHECK (*ta);
941	}	1162	}
942		1163
943	static void	1164	static void
944	api_transfer (SV *prev_sv, SV *next_sv)	1165	api_transfer (SV *prev_sv, SV *next_sv)
945	{	1166	{
		1167	dTHX;
946	struct transfer_args ta;	1168	struct transfer_args ta;
947		1169
948	prepare_transfer (&ta, prev_sv, next_sv);	1170	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
949	TRANSFER (ta);	1171	TRANSFER (ta);
950	}	1172	}
951		1173
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 ********************************************************************/	1174	/** Coro ********************************************************************/
965		1175
966	static void	1176	static void
967	coro_enq (SV *coro_sv)	1177	coro_enq (pTHX_ SV *coro_sv)
968	{	1178	{
969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1179	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
970	}	1180	}
971		1181
972	static SV *	1182	static SV *
973	coro_deq (int min_prio)	1183	coro_deq (pTHX_ int min_prio)
974	{	1184	{
975	int prio = PRIO_MAX - PRIO_MIN;	1185	int prio = PRIO_MAX - PRIO_MIN;
976		1186
977	min_prio -= PRIO_MIN;	1187	min_prio -= PRIO_MIN;
978	if (min_prio < 0)	1188	if (min_prio < 0)
…		…
986	}	1196	}
987		1197
988	static int	1198	static int
989	api_ready (SV *coro_sv)	1199	api_ready (SV *coro_sv)
990	{	1200	{
		1201	dTHX;
991	struct coro *coro;	1202	struct coro *coro;
992		1203
993	if (SvROK (coro_sv))	1204	if (SvROK (coro_sv))
994	coro_sv = SvRV (coro_sv);	1205	coro_sv = SvRV (coro_sv);
995		1206
…		…
999	return 0;	1210	return 0;
1000		1211
1001	coro->flags |= CF_READY;	1212	coro->flags |= CF_READY;
1002		1213
1003	LOCK;	1214	LOCK;
1004	coro_enq (SvREFCNT_inc (coro_sv));	1215	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1005	++coro_nready;	1216	++coro_nready;
1006	UNLOCK;	1217	UNLOCK;
1007		1218
1008	return 1;	1219	return 1;
1009	}	1220	}
1010		1221
1011	static int	1222	static int
1012	api_is_ready (SV *coro_sv)	1223	api_is_ready (SV *coro_sv)
1013	{	1224	{
		1225	dTHX;
1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1226	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1015	}	1227	}
1016		1228
1017	static void	1229	static void
1018	prepare_schedule (struct transfer_args *ta)	1230	prepare_schedule (pTHX_ struct transfer_args *ta)
1019	{	1231	{
1020	SV *prev_sv, *next_sv;	1232	SV *prev_sv, *next_sv;
1021		1233
1022	for (;;)	1234	for (;;)
1023	{	1235	{
1024	LOCK;	1236	LOCK;
1025	next_sv = coro_deq (PRIO_MIN);	1237	next_sv = coro_deq (aTHX_ PRIO_MIN);
1026	UNLOCK;
1027		1238
1028	/* nothing to schedule: call the idle handler */	1239	/* nothing to schedule: call the idle handler */
1029	if (!next_sv)	1240	if (!next_sv)
1030	{	1241	{
1031	dSP;	1242	dSP;
		1243	UNLOCK;
1032		1244
1033	ENTER;	1245	ENTER;
1034	SAVETMPS;	1246	SAVETMPS;
1035		1247
1036	PUSHMARK (SP);	1248	PUSHMARK (SP);
…		…
1045	ta->next = SvSTATE (next_sv);	1257	ta->next = SvSTATE (next_sv);
1046		1258
1047	/* cannot transfer to destroyed coros, skip and look for next */	1259	/* cannot transfer to destroyed coros, skip and look for next */
1048	if (ta->next->flags & CF_DESTROYED)	1260	if (ta->next->flags & CF_DESTROYED)
1049	{	1261	{
		1262	UNLOCK;
1050	SvREFCNT_dec (next_sv);	1263	SvREFCNT_dec (next_sv);
1051	/* coro_nready is already taken care of by destroy */	1264	/* coro_nready is already taken care of by destroy */
1052	continue;	1265	continue;
1053	}	1266	}
1054		1267
1055	LOCK;
1056	--coro_nready;	1268	--coro_nready;
1057	UNLOCK;	1269	UNLOCK;
1058	break;	1270	break;
1059	}	1271	}
1060		1272
1061	/* free this only after the transfer */	1273	/* free this only after the transfer */
1062	prev_sv = SvRV (coro_current);	1274	prev_sv = SvRV (coro_current);
1063	SvRV_set (coro_current, next_sv);
1064	ta->prev = SvSTATE (prev_sv);	1275	ta->prev = SvSTATE (prev_sv);
1065		1276	TRANSFER_CHECK (*ta);
1066	assert (ta->next->flags & CF_READY);	1277	assert (ta->next->flags & CF_READY);
1067	ta->next->flags &= ~CF_READY;	1278	ta->next->flags &= ~CF_READY;
		1279	SvRV_set (coro_current, next_sv);
1068		1280
1069	LOCK;	1281	LOCK;
1070	free_coro_mortal ();	1282	free_coro_mortal (aTHX);
1071	coro_mortal = prev_sv;	1283	coro_mortal = prev_sv;
1072	UNLOCK;	1284	UNLOCK;
1073	}	1285	}
1074		1286
1075	static void	1287	static void
1076	prepare_cede (struct transfer_args *ta)	1288	prepare_cede (pTHX_ struct transfer_args *ta)
1077	{	1289	{
1078	api_ready (coro_current);	1290	api_ready (coro_current);
1079	prepare_schedule (ta);	1291	prepare_schedule (aTHX_ ta);
1080	}	1292	}
1081		1293
1082	static int	1294	static int
1083	prepare_cede_notself (struct transfer_args *ta)	1295	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1084	{	1296	{
1085	if (coro_nready)	1297	if (coro_nready)
1086	{	1298	{
1087	SV *prev = SvRV (coro_current);	1299	SV *prev = SvRV (coro_current);
1088	prepare_schedule (ta);	1300	prepare_schedule (aTHX_ ta);
1089	api_ready (prev);	1301	api_ready (prev);
1090	return 1;	1302	return 1;
1091	}	1303	}
1092	else	1304	else
1093	return 0;	1305	return 0;
1094	}	1306	}
1095		1307
1096	static void	1308	static void
1097	api_schedule (void)	1309	api_schedule (void)
1098	{	1310	{
		1311	dTHX;
1099	struct transfer_args ta;	1312	struct transfer_args ta;
1100		1313
1101	prepare_schedule (&ta);	1314	prepare_schedule (aTHX_ &ta);
1102	TRANSFER (ta);	1315	TRANSFER (ta);
1103	}	1316	}
1104		1317
1105	static int	1318	static int
1106	api_cede (void)	1319	api_cede (void)
1107	{	1320	{
		1321	dTHX;
1108	struct transfer_args ta;	1322	struct transfer_args ta;
1109		1323
1110	prepare_cede (&ta);	1324	prepare_cede (aTHX_ &ta);
1111		1325
1112	if (ta.prev != ta.next)	1326	if (ta.prev != ta.next)
1113	{	1327	{
1114	TRANSFER (ta);	1328	TRANSFER (ta);
1115	return 1;	1329	return 1;
…		…
1119	}	1333	}
1120		1334
1121	static int	1335	static int
1122	api_cede_notself (void)	1336	api_cede_notself (void)
1123	{	1337	{
		1338	dTHX;
1124	struct transfer_args ta;	1339	struct transfer_args ta;
1125		1340
1126	if (prepare_cede_notself (&ta))	1341	if (prepare_cede_notself (aTHX_ &ta))
1127	{	1342	{
1128	TRANSFER (ta);	1343	TRANSFER (ta);
1129	return 1;	1344	return 1;
1130	}	1345	}
1131	else	1346	else
1132	return 0;	1347	return 0;
1133	}	1348	}
1134		1349
		1350	static void
		1351	api_trace (SV *coro_sv, int flags)
		1352	{
		1353	dTHX;
		1354	struct coro *coro = SvSTATE (coro_sv);
		1355
		1356	if (flags & CC_TRACE)
		1357	{
		1358	if (!coro->cctx)
		1359	coro->cctx = cctx_new ();
		1360	else if (!(coro->cctx->flags & CC_TRACE))
		1361	croak ("cannot enable tracing on coroutine with custom stack");
		1362
		1363	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1364	}
		1365	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1366	{
		1367	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1368
		1369	if (coro->flags & CF_RUNNING)
		1370	PL_runops = RUNOPS_DEFAULT;
		1371	else
		1372	coro->runops = RUNOPS_DEFAULT;
		1373	}
		1374	}
		1375
1135	MODULE = Coro::State PACKAGE = Coro::State	1376	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1136		1377
1137	PROTOTYPES: DISABLE	1378	PROTOTYPES: DISABLE
1138		1379
1139	BOOT:	1380	BOOT:
1140	{	1381	{
1141	#ifdef USE_ITHREADS	1382	#ifdef USE_ITHREADS
1142	MUTEX_INIT (&coro_mutex);	1383	MUTEX_INIT (&coro_mutex);
1143	#endif	1384	#endif
1144	BOOT_PAGESIZE;	1385	BOOT_PAGESIZE;
1145		1386
		1387	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1388
1146	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1389	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1147		1390
		1391	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1392	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1148	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1393	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));	1394	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1153		1395
1154	main_mainstack = PL_mainstack;	1396	main_mainstack = PL_mainstack;
		1397	main_top_env = PL_top_env;
		1398
		1399	while (main_top_env->je_prev)
		1400	main_top_env = main_top_env->je_prev;
1155		1401
1156	coroapi.ver = CORO_API_VERSION;	1402	coroapi.ver = CORO_API_VERSION;
1157	coroapi.transfer = api_transfer;	1403	coroapi.transfer = api_transfer;
1158		1404
1159	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1405	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1166	struct coro *coro;	1412	struct coro *coro;
1167	HV *hv;	1413	HV *hv;
1168	int i;	1414	int i;
1169		1415
1170	Newz (0, coro, 1, struct coro);	1416	Newz (0, coro, 1, struct coro);
1171	coro->args = newAV ();	1417	coro->args = newAV ();
1172	coro->save = CORO_SAVE_ALL;
1173	coro->flags = CF_NEW;	1418	coro->flags = CF_NEW;
1174		1419
		1420	if (coro_first) coro_first->prev = coro;
		1421	coro->next = coro_first;
		1422	coro_first = coro;
		1423
1175	hv = newHV ();	1424	coro->hv = hv = newHV ();
1176	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1425	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));	1426	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1178		1427
1179	for (i = 1; i < items; i++)	1428	for (i = 1; i < items; i++)
1180	av_push (coro->args, newSVsv (ST (i)));	1429	av_push (coro->args, newSVsv (ST (i)));
1181	}	1430	}
1182	OUTPUT:	1431	OUTPUT:
1183	RETVAL	1432	RETVAL
1184		1433
1185	int	1434	# these not obviously related functions are all rolled into the same xs
1186	save (SV *coro, int new_save = -1)	1435	# function to increase chances that they all will call transfer with the same
1187	CODE:	1436	# stack offset
1188	RETVAL = api_save (coro, new_save);
1189	OUTPUT:
1190	RETVAL
1191
1192	void	1437	void
1193	_set_stacklevel (...)	1438	_set_stacklevel (...)
1194	ALIAS:	1439	ALIAS:
1195	Coro::State::transfer = 1	1440	Coro::State::transfer = 1
1196	Coro::schedule = 2	1441	Coro::schedule = 2
…		…
1209		1454
1210	case 1:	1455	case 1:
1211	if (items != 2)	1456	if (items != 2)
1212	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1457	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1213		1458
1214	prepare_transfer (&ta, ST (0), ST (1));	1459	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1215	break;	1460	break;
1216		1461
1217	case 2:	1462	case 2:
1218	prepare_schedule (&ta);	1463	prepare_schedule (aTHX_ &ta);
1219	break;	1464	break;
1220		1465
1221	case 3:	1466	case 3:
1222	prepare_cede (&ta);	1467	prepare_cede (aTHX_ &ta);
1223	break;	1468	break;
1224		1469
1225	case 4:	1470	case 4:
1226	if (!prepare_cede_notself (&ta))	1471	if (!prepare_cede_notself (aTHX_ &ta))
1227	XSRETURN_EMPTY;	1472	XSRETURN_EMPTY;
1228		1473
1229	break;	1474	break;
1230	}	1475	}
1231		1476
…		…
1237	}	1482	}
1238		1483
1239	bool	1484	bool
1240	_destroy (SV *coro_sv)	1485	_destroy (SV *coro_sv)
1241	CODE:	1486	CODE:
1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1487	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1243	OUTPUT:	1488	OUTPUT:
1244	RETVAL	1489	RETVAL
1245		1490
1246	void	1491	void
1247	_exit (code)	1492	_exit (code)
…		…
1249	PROTOTYPE: $	1494	PROTOTYPE: $
1250	CODE:	1495	CODE:
1251	_exit (code);	1496	_exit (code);
1252		1497
1253	int	1498	int
		1499	cctx_stacksize (int new_stacksize = 0)
		1500	CODE:
		1501	RETVAL = coro_stacksize;
		1502	if (new_stacksize)
		1503	coro_stacksize = new_stacksize;
		1504	OUTPUT:
		1505	RETVAL
		1506
		1507	int
1254	cctx_count ()	1508	cctx_count ()
1255	CODE:	1509	CODE:
1256	RETVAL = cctx_count;	1510	RETVAL = cctx_count;
1257	OUTPUT:	1511	OUTPUT:
1258	RETVAL	1512	RETVAL
…		…
1262	CODE:	1516	CODE:
1263	RETVAL = cctx_idle;	1517	RETVAL = cctx_idle;
1264	OUTPUT:	1518	OUTPUT:
1265	RETVAL	1519	RETVAL
1266		1520
		1521	void
		1522	list ()
		1523	PPCODE:
		1524	{
		1525	struct coro *coro;
		1526	for (coro = coro_first; coro; coro = coro->next)
		1527	if (coro->hv)
		1528	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1529	}
		1530
		1531	void
		1532	call (Coro::State coro, SV *coderef)
		1533	ALIAS:
		1534	eval = 1
		1535	CODE:
		1536	{
		1537	if (coro->mainstack)
		1538	{
		1539	struct coro temp;
		1540	Zero (&temp, 1, struct coro);
		1541
		1542	if (!(coro->flags & CF_RUNNING))
		1543	{
		1544	save_perl (aTHX_ &temp);
		1545	load_perl (aTHX_ coro);
		1546	}
		1547
		1548	{
		1549	dSP;
		1550	ENTER;
		1551	SAVETMPS;
		1552	PUSHMARK (SP);
		1553	PUTBACK;
		1554	if (ix)
		1555	eval_sv (coderef, 0);
		1556	else
		1557	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1558	SPAGAIN;
		1559	FREETMPS;
		1560	LEAVE;
		1561	PUTBACK;
		1562	}
		1563
		1564	if (!(coro->flags & CF_RUNNING))
		1565	{
		1566	save_perl (aTHX_ coro);
		1567	load_perl (aTHX_ &temp);
		1568	}
		1569	}
		1570	}
		1571
		1572	SV *
		1573	is_ready (Coro::State coro)
		1574	PROTOTYPE: $
		1575	ALIAS:
		1576	is_ready = CF_READY
		1577	is_running = CF_RUNNING
		1578	is_new = CF_NEW
		1579	is_destroyed = CF_DESTROYED
		1580	CODE:
		1581	RETVAL = boolSV (coro->flags & ix);
		1582	OUTPUT:
		1583	RETVAL
		1584
		1585	void
		1586	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1587
		1588	SV *
		1589	has_stack (Coro::State coro)
		1590	PROTOTYPE: $
		1591	CODE:
		1592	RETVAL = boolSV (!!coro->cctx);
		1593	OUTPUT:
		1594	RETVAL
		1595
		1596	int
		1597	is_traced (Coro::State coro)
		1598	PROTOTYPE: $
		1599	CODE:
		1600	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1601	OUTPUT:
		1602	RETVAL
		1603
		1604	IV
		1605	rss (Coro::State coro)
		1606	PROTOTYPE: $
		1607	ALIAS:
		1608	usecount = 1
		1609	CODE:
		1610	switch (ix)
		1611	{
		1612	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1613	case 1: RETVAL = coro->usecount; break;
		1614	}
		1615	OUTPUT:
		1616	RETVAL
		1617
		1618
1267	MODULE = Coro::State PACKAGE = Coro	1619	MODULE = Coro::State PACKAGE = Coro
1268		1620
1269	BOOT:	1621	BOOT:
1270	{	1622	{
1271	int i;	1623	int i;
		1624
		1625	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1626	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1627	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1628
		1629	coro_current = get_sv ("Coro::current", FALSE);
		1630	SvREADONLY_on (coro_current);
1272		1631
1273	coro_stash = gv_stashpv ("Coro", TRUE);	1632	coro_stash = gv_stashpv ("Coro", TRUE);
1274		1633
1275	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1634	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1276	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1635	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1277	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1636	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1278	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1637	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1279	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1638	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1280	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1639	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1281		1640
1282	coro_current = get_sv ("Coro::current", FALSE);
1283	SvREADONLY_on (coro_current);
1284
1285	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1641	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1286	coro_ready[i] = newAV ();	1642	coro_ready[i] = newAV ();
1287		1643
1288	{	1644	{
1289	SV *sv = perl_get_sv("Coro::API", 1);	1645	SV *sv = perl_get_sv("Coro::API", 1);
1290		1646
1291	coroapi.schedule = api_schedule;	1647	coroapi.schedule = api_schedule;
1292	coroapi.save = api_save;
1293	coroapi.cede = api_cede;	1648	coroapi.cede = api_cede;
1294	coroapi.cede_notself = api_cede_notself;	1649	coroapi.cede_notself = api_cede_notself;
1295	coroapi.ready = api_ready;	1650	coroapi.ready = api_ready;
1296	coroapi.is_ready = api_is_ready;	1651	coroapi.is_ready = api_is_ready;
1297	coroapi.nready = &coro_nready;	1652	coroapi.nready = &coro_nready;
…		…
1338	CODE:	1693	CODE:
1339	RETVAL = boolSV (api_ready (self));	1694	RETVAL = boolSV (api_ready (self));
1340	OUTPUT:	1695	OUTPUT:
1341	RETVAL	1696	RETVAL
1342		1697
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	1698	int
1352	nready (...)	1699	nready (...)
1353	PROTOTYPE:	1700	PROTOTYPE:
1354	CODE:	1701	CODE:
1355	RETVAL = coro_nready;	1702	RETVAL = coro_nready;
1356	OUTPUT:	1703	OUTPUT:
1357	RETVAL	1704	RETVAL
1358		1705
		1706	# for async_pool speedup
		1707	void
		1708	_pool_1 (SV *cb)
		1709	CODE:
		1710	{
		1711	int i, len;
		1712	HV *hv = (HV *)SvRV (coro_current);
		1713	AV *defav = GvAV (PL_defgv);
		1714	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1715	AV *invoke_av;
		1716
		1717	if (!invoke)
		1718	croak ("\3terminate\2\n");
		1719
		1720	hv_store (hv, "desc", sizeof ("desc") - 1,
		1721	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1722
		1723	invoke_av = (AV *)SvRV (invoke);
		1724	len = av_len (invoke_av);
		1725
		1726	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1727
		1728	if (len > 0)
		1729	{
		1730	av_fill (defav, len - 1);
		1731	for (i = 0; i < len; ++i)
		1732	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1733	}
		1734
		1735	SvREFCNT_dec (invoke);
		1736	}
		1737
		1738	void
		1739	_pool_2 (SV *cb)
		1740	CODE:
		1741	{
		1742	struct coro *coro = SvSTATE (coro_current);
		1743
		1744	sv_setsv (cb, &PL_sv_undef);
		1745
		1746	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1747	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1748	croak ("\3terminate\2\n");
		1749
		1750	av_clear (GvAV (PL_defgv));
		1751	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1752	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1753
		1754	coro->prio = 0;
		1755
		1756	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1757	api_trace (coro_current, 0);
		1758
		1759	av_push (av_async_pool, newSVsv (coro_current));
		1760	}
		1761
		1762
1359	MODULE = Coro::State PACKAGE = Coro::AIO	1763	MODULE = Coro::State PACKAGE = Coro::AIO
1360		1764
1361	SV *	1765	SV *
1362	_get_state ()	1766	_get_state ()
1363	CODE:	1767	CODE:

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