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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.179 by root, Wed Oct 3 16:03:17 2007 UTC vs.
Revision 1.245 by root, Mon Sep 22 05:40:21 2008 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#include <stdio.h>	12	#include <stdio.h>
12	#include <errno.h>	13	#include <errno.h>
13	#include <assert.h>	14	#include <assert.h>
		15
		16	#ifdef WIN32
		17	# undef setjmp
		18	# undef longjmp
		19	# undef _exit
		20	# define setjmp _setjmp // deep magic, don't ask
		21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
		23	#endif
14		24
15	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
16	# include <unistd.h>	26	# include <unistd.h>
17	# include <sys/mman.h>	27	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	28	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	80	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	81	# define IS_PADCONST(v) 0
72	# endif	82	# endif
73	#endif	83	#endif
74		84
		85	/* 5.8.8 */
		86	#ifndef GV_NOTQUAL
		87	# define GV_NOTQUAL 0
		88	#endif
		89	#ifndef newSV
		90	# define newSV(l) NEWSV(0,l)
		91	#endif
		92
		93	/* 5.11 */
		94	#ifndef CxHASARGS
		95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		96	#endif
		97
75	/* 5.8.7 */	98	/* 5.8.7 */
76	#ifndef SvRV_set	99	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	100	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	101	#endif
79		102
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		122
100	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	127	#else
104	# define attribute(x)	128	# define attribute(x)
105	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
106	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
107		135
108	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
109		137
110	#include "CoroAPI.h"	138	#include "CoroAPI.h"
111		139
…		…
130	static size_t coro_stacksize = CORO_STACKSIZE;	158	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	160	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	161	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	162	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	163	static volatile SV *coro_mortal; /* will be freed after next transfer */
136		164
137	static GV *irsgv; /* $/ */	165	static GV *irsgv; /* $/ */
		166	static GV *stdoutgv; /* *STDOUT */
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV *hv_sig; /* %SIG */
138		170
139	/* async_pool helper stuff */	171	/* async_pool helper stuff */
140	static SV *sv_pool_rss;	172	static SV *sv_pool_rss;
141	static SV *sv_pool_size;	173	static SV *sv_pool_size;
142	static AV *av_async_pool;	174	static AV *av_async_pool;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
143		178
144	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
145	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
146		181
147	enum {	182	enum {
…		…
178	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
179	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181	};	216	};
182		217
		218	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		219	typedef struct {
		220	SV *defsv;
		221	AV *defav;
		222	SV *errsv;
		223	SV *irsgv;
		224	#define VAR(name,type) type name;
		225	# include "state.h"
		226	#undef VAR
		227	} perl_slots;
		228
		229	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		230
183	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
184	struct coro {	232	struct coro {
185	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
186	coro_cctx *cctx;	234	coro_cctx *cctx;
187		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots *slot; /* basically the saved sp */
		239
188	/* data associated with this coroutine (initial args) */	240	AV *args; /* data associated with this coroutine (initial args) */
189	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
190	int refcnt;
191	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
192		243	HV *hv; /* the perl hash associated with this coro, if any */
193	/* optionally saved, might be zero */
194	AV *defav; /* @_ */
195	SV *defsv; /* $_ */
196	SV *errsv; /* $@ */
197	IO *deffh; /* default filehandle */
198	SV *irssv; /* $/ */
199	SV *irssv_sv; /* real $/ cache */
200
201	#define VAR(name,type) type name;
202	# include "state.h"
203	#undef VAR
204		244
205	/* statistics */	245	/* statistics */
206	int usecount; /* number of switches to this coro */	246	int usecount; /* number of transfers to this coro */
207		247
208	/* coro process data */	248	/* coro process data */
209	int prio;	249	int prio;
		250	SV *throw; /* exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
210		254
211	/* linked list */	255	/* linked list */
212	struct coro *next, *prev;	256	struct coro *next, *prev;
213	HV *hv; /* the perl hash associated with this coro, if any */
214	};	257	};
215		258
216	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
217	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
218		261
…		…
225	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
226	#define PRIO_MIN -4	269	#define PRIO_MIN -4
227		270
228	/* for Coro.pm */	271	/* for Coro.pm */
229	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
230	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
231	static int coro_nready;	275	static int coro_nready;
232	static struct coro *coro_first;	276	static struct coro *coro_first;
233		277
234	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
235		279
		280	static SV *
		281	coro_get_sv (pTHX_ const char *name, int create)
		282	{
		283	#if PERL_VERSION_ATLEAST (5,10,0)
		284	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		285	get_sv (name, create);
		286	#endif
		287	return get_sv (name, create);
		288	}
		289
		290	static AV *
		291	coro_get_av (pTHX_ const char *name, int create)
		292	{
		293	#if PERL_VERSION_ATLEAST (5,10,0)
		294	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		295	get_av (name, create);
		296	#endif
		297	return get_av (name, create);
		298	}
		299
		300	static HV *
		301	coro_get_hv (pTHX_ const char *name, int create)
		302	{
		303	#if PERL_VERSION_ATLEAST (5,10,0)
		304	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		305	get_hv (name, create);
		306	#endif
		307	return get_hv (name, create);
		308	}
		309
236	static AV *	310	static AV *
237	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
238	{	312	{
239	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
240	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
241		315
242	newpadlist = newAV ();	316	newpadlist = newAV ();
243	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
244	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
245	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
246	#else	320	#else
247	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
248	#endif	322	#endif
249	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
287		361
288	/* casting is fun. */	362	/* casting is fun. */
289	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
290	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
291		365
292	SvREFCNT_dec (av);	366	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
293		367
294	return 0;	368	return 0;
295	}	369	}
296		370
297	#define PERL_MAGIC_coro PERL_MAGIC_ext	371	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		372	#define CORO_MAGIC_type_state PERL_MAGIC_ext
298		373
299	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	374	static MGVTBL coro_cv_vtbl = {
		375	0, 0, 0, 0,
		376	coro_cv_free
		377	};
300		378
301	#define CORO_MAGIC(cv) \	379	#define CORO_MAGIC(sv,type) \
302	SvMAGIC (cv) \	380	SvMAGIC (sv) \
303	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	381	? SvMAGIC (sv)->mg_type == type \
304	? SvMAGIC (cv) \	382	? SvMAGIC (sv) \
305	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	383	: mg_find (sv, type) \
306	: 0	384	: 0
		385
		386	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		387	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
307		388
308	static struct coro *	389	static struct coro *
309	SvSTATE_ (pTHX_ SV *coro)	390	SvSTATE_ (pTHX_ SV *coro)
310	{	391	{
311	HV *stash;	392	HV *stash;
312	MAGIC *mg;	393	MAGIC *mg;
313		394
314	if (SvROK (coro))	395	if (SvROK (coro))
315	coro = SvRV (coro);	396	coro = SvRV (coro);
316		397
317	if (SvTYPE (coro) != SVt_PVHV)	398	if (expect_false (SvTYPE (coro) != SVt_PVHV))
318	croak ("Coro::State object required");	399	croak ("Coro::State object required");
319		400
320	stash = SvSTASH (coro);	401	stash = SvSTASH (coro);
321	if (stash != coro_stash && stash != coro_state_stash)	402	if (expect_false (stash != coro_stash && stash != coro_state_stash))
322	{	403	{
323	/* very slow, but rare, check */	404	/* very slow, but rare, check */
324	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	405	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
325	croak ("Coro::State object required");	406	croak ("Coro::State object required");
326	}	407	}
327		408
328	mg = CORO_MAGIC (coro);	409	mg = CORO_MAGIC_state (coro);
329	return (struct coro *)mg->mg_ptr;	410	return (struct coro *)mg->mg_ptr;
330	}	411	}
331		412
332	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	413	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
333		414
334	/* the next two functions merely cache the padlists */	415	/* the next two functions merely cache the padlists */
335	static void	416	static void
336	get_padlist (pTHX_ CV *cv)	417	get_padlist (pTHX_ CV *cv)
337	{	418	{
338	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC_cv (cv);
339	AV *av;	420	AV *av;
340		421
341	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	422	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
342	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	423	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
343	else	424	else
344	{	425	{
345	#if CORO_PREFER_PERL_FUNCTIONS	426	#if CORO_PREFER_PERL_FUNCTIONS
346	/* this is probably cleaner, but also slower? */	427	/* this is probably cleaner? but also slower! */
		428	/* in practise, it seems to be less stable */
347	CV *cp = Perl_cv_clone (cv);	429	CV *cp = Perl_cv_clone (cv);
348	CvPADLIST (cv) = CvPADLIST (cp);	430	CvPADLIST (cv) = CvPADLIST (cp);
349	CvPADLIST (cp) = 0;	431	CvPADLIST (cp) = 0;
350	SvREFCNT_dec (cp);	432	SvREFCNT_dec (cp);
351	#else	433	#else
…		…
355	}	437	}
356		438
357	static void	439	static void
358	put_padlist (pTHX_ CV *cv)	440	put_padlist (pTHX_ CV *cv)
359	{	441	{
360	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
361	AV *av;	443	AV *av;
362		444
363	if (!mg)	445	if (expect_false (!mg))
364	{	446	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
365	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
366	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
367	mg->mg_virtual = &vtbl_coro;
368	mg->mg_obj = (SV *)newAV ();
369	}
370		447
371	av = (AV *)mg->mg_obj;	448	av = (AV *)mg->mg_obj;
372		449
373	if (AvFILLp (av) >= AvMAX (av))	450	if (expect_false (AvFILLp (av) >= AvMAX (av)))
374	av_extend (av, AvMAX (av) + 1);	451	av_extend (av, AvMAX (av) + 1);
375		452
376	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	453	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
377	}	454	}
378		455
379	/** load & save, init *******************************************************/	456	/** load & save, init *******************************************************/
380		457
381	static void	458	static void
382	load_perl (pTHX_ Coro__State c)	459	load_perl (pTHX_ Coro__State c)
383	{	460	{
		461	perl_slots *slot = c->slot;
		462	c->slot = 0;
		463
		464	PL_mainstack = c->mainstack;
		465
		466	GvSV (PL_defgv) = slot->defsv;
		467	GvAV (PL_defgv) = slot->defav;
		468	GvSV (PL_errgv) = slot->errsv;
		469	GvSV (irsgv) = slot->irsgv;
		470
384	#define VAR(name,type) PL_ ## name = c->name;	471	#define VAR(name,type) PL_ ## name = slot->name;
385	# include "state.h"	472	# include "state.h"
386	#undef VAR	473	#undef VAR
387
388	GvSV (PL_defgv) = c->defsv;
389	GvAV (PL_defgv) = c->defav;
390	GvSV (PL_errgv) = c->errsv;
391	GvIOp(PL_defoutgv) = c->deffh;
392	PL_rs = c->irssv;
393	GvSV (irsgv) = c->irssv_sv;
394		474
395	{	475	{
396	dSP;	476	dSP;
		477
397	CV *cv;	478	CV *cv;
398		479
399	/* now do the ugly restore mess */	480	/* now do the ugly restore mess */
400	while ((cv = (CV *)POPs))	481	while (expect_true (cv = (CV *)POPs))
401	{	482	{
402	put_padlist (aTHX_ cv); /* mark this padlist as available */	483	put_padlist (aTHX_ cv); /* mark this padlist as available */
403	CvDEPTH (cv) = PTR2IV (POPs);	484	CvDEPTH (cv) = PTR2IV (POPs);
404	CvPADLIST (cv) = (AV *)POPs;	485	CvPADLIST (cv) = (AV *)POPs;
405	}	486	}
…		…
424		505
425	XPUSHs (Nullsv);	506	XPUSHs (Nullsv);
426	/* this loop was inspired by pp_caller */	507	/* this loop was inspired by pp_caller */
427	for (;;)	508	for (;;)
428	{	509	{
429	while (cxix >= 0)	510	while (expect_true (cxix >= 0))
430	{	511	{
431	PERL_CONTEXT *cx = &ccstk[cxix--];	512	PERL_CONTEXT *cx = &ccstk[cxix--];
432		513
433	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	514	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
434	{	515	{
435	CV *cv = cx->blk_sub.cv;	516	CV *cv = cx->blk_sub.cv;
436		517
437	if (CvDEPTH (cv))	518	if (expect_true (CvDEPTH (cv)))
438	{	519	{
439	EXTEND (SP, 3);	520	EXTEND (SP, 3);
440	PUSHs ((SV *)CvPADLIST (cv));	521	PUSHs ((SV *)CvPADLIST (cv));
441	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	522	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
442	PUSHs ((SV *)cv);	523	PUSHs ((SV *)cv);
443		524
444	CvDEPTH (cv) = 0;	525	CvDEPTH (cv) = 0;
445	get_padlist (aTHX_ cv);	526	get_padlist (aTHX_ cv);
446	}	527	}
447	}	528	}
448	}	529	}
449		530
450	if (top_si->si_type == PERLSI_MAIN)	531	if (expect_true (top_si->si_type == PERLSI_MAIN))
451	break;	532	break;
452		533
453	top_si = top_si->si_prev;	534	top_si = top_si->si_prev;
454	ccstk = top_si->si_cxstack;	535	ccstk = top_si->si_cxstack;
455	cxix = top_si->si_cxix;	536	cxix = top_si->si_cxix;
456	}	537	}
457		538
458	PUTBACK;	539	PUTBACK;
459	}	540	}
460		541
		542	/* allocate some space on the context stack for our purposes */
		543	/* we manually unroll here, as usually 2 slots is enough */
		544	if (SLOT_COUNT >= 1) CXINC;
		545	if (SLOT_COUNT >= 2) CXINC;
		546	if (SLOT_COUNT >= 3) CXINC;
		547	{
		548	int i;
		549	for (i = 3; i < SLOT_COUNT; ++i)
		550	CXINC;
		551	}
		552	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		553
		554	c->mainstack = PL_mainstack;
		555
		556	{
		557	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		558
461	c->defav = GvAV (PL_defgv);	559	slot->defav = GvAV (PL_defgv);
462	c->defsv = DEFSV;	560	slot->defsv = DEFSV;
463	c->errsv = ERRSV;	561	slot->errsv = ERRSV;
464	c->deffh = GvIOp (PL_defoutgv);
465	c->irssv = PL_rs;
466	c->irssv_sv = GvSV (irsgv);	562	slot->irsgv = GvSV (irsgv);
467		563
468	#define VAR(name,type)c->name = PL_ ## name;	564	#define VAR(name,type) slot->name = PL_ ## name;
469	# include "state.h"	565	# include "state.h"
470	#undef VAR	566	#undef VAR
		567	}
471	}	568	}
472		569
473	/*	570	/*
474	* allocate various perl stacks. This is an exact copy	571	* allocate various perl stacks. This is an exact copy
475	* of perl.c:init_stacks, except that it uses less memory	572	* of perl.c:init_stacks, except that it uses less memory
…		…
480	# define coro_init_stacks init_stacks	577	# define coro_init_stacks init_stacks
481	#else	578	#else
482	static void	579	static void
483	coro_init_stacks (pTHX)	580	coro_init_stacks (pTHX)
484	{	581	{
485	PL_curstackinfo = new_stackinfo(64, 6);	582	PL_curstackinfo = new_stackinfo(32, 8);
486	PL_curstackinfo->si_type = PERLSI_MAIN;	583	PL_curstackinfo->si_type = PERLSI_MAIN;
487	PL_curstack = PL_curstackinfo->si_stack;	584	PL_curstack = PL_curstackinfo->si_stack;
488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	585	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
489		586
490	PL_stack_base = AvARRAY(PL_curstack);	587	PL_stack_base = AvARRAY(PL_curstack);
491	PL_stack_sp = PL_stack_base;	588	PL_stack_sp = PL_stack_base;
492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	589	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
493		590
494	New(50,PL_tmps_stack,64,SV*);	591	New(50,PL_tmps_stack,32,SV*);
495	PL_tmps_floor = -1;	592	PL_tmps_floor = -1;
496	PL_tmps_ix = -1;	593	PL_tmps_ix = -1;
497	PL_tmps_max = 64;	594	PL_tmps_max = 32;
498		595
499	New(54,PL_markstack,16,I32);	596	New(54,PL_markstack,16,I32);
500	PL_markstack_ptr = PL_markstack;	597	PL_markstack_ptr = PL_markstack;
501	PL_markstack_max = PL_markstack + 16;	598	PL_markstack_max = PL_markstack + 16;
502		599
503	#ifdef SET_MARK_OFFSET	600	#ifdef SET_MARK_OFFSET
504	SET_MARK_OFFSET;	601	SET_MARK_OFFSET;
505	#endif	602	#endif
506		603
507	New(54,PL_scopestack,16,I32);	604	New(54,PL_scopestack,8,I32);
508	PL_scopestack_ix = 0;	605	PL_scopestack_ix = 0;
509	PL_scopestack_max = 16;	606	PL_scopestack_max = 8;
510		607
511	New(54,PL_savestack,64,ANY);	608	New(54,PL_savestack,24,ANY);
512	PL_savestack_ix = 0;	609	PL_savestack_ix = 0;
513	PL_savestack_max = 64;	610	PL_savestack_max = 24;
514		611
515	#if !PERL_VERSION_ATLEAST (5,9,0)	612	#if !PERL_VERSION_ATLEAST (5,10,0)
516	New(54,PL_retstack,4,OP*);	613	New(54,PL_retstack,4,OP*);
517	PL_retstack_ix = 0;	614	PL_retstack_ix = 0;
518	PL_retstack_max = 4;	615	PL_retstack_max = 4;
519	#endif	616	#endif
520	}	617	}
…		…
543		640
544	Safefree (PL_tmps_stack);	641	Safefree (PL_tmps_stack);
545	Safefree (PL_markstack);	642	Safefree (PL_markstack);
546	Safefree (PL_scopestack);	643	Safefree (PL_scopestack);
547	Safefree (PL_savestack);	644	Safefree (PL_savestack);
548	#if !PERL_VERSION_ATLEAST (5,9,0)	645	#if !PERL_VERSION_ATLEAST (5,10,0)
549	Safefree (PL_retstack);	646	Safefree (PL_retstack);
550	#endif	647	#endif
551	}	648	}
552		649
553	static size_t	650	static size_t
554	coro_rss (pTHX_ struct coro *coro)	651	coro_rss (pTHX_ struct coro *coro)
555	{	652	{
556	size_t rss = sizeof (coro);	653	size_t rss = sizeof (*coro);
557		654
558	if (coro->mainstack)	655	if (coro->mainstack)
559	{	656	{
		657	perl_slots tmp_slot;
		658	perl_slots *slot;
		659
560	if (coro->flags & CF_RUNNING)	660	if (coro->flags & CF_RUNNING)
561	{	661	{
		662	slot = &tmp_slot;
		663
562	#define VAR(name,type)coro->name = PL_ ## name;	664	#define VAR(name,type) slot->name = PL_ ## name;
563	# include "state.h"	665	# include "state.h"
564	#undef VAR	666	#undef VAR
565	}	667	}
		668	else
		669	slot = coro->slot;
566		670
		671	if (slot)
		672	{
567	rss += sizeof (coro->curstackinfo);	673	rss += sizeof (slot->curstackinfo);
568	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	674	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
570	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	675	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
571	rss += coro->tmps_max * sizeof (SV *);	676	rss += slot->tmps_max * sizeof (SV *);
572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	677	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
573	rss += coro->scopestack_max * sizeof (I32);	678	rss += slot->scopestack_max * sizeof (I32);
574	rss += coro->savestack_max * sizeof (ANY);	679	rss += slot->savestack_max * sizeof (ANY);
575		680
576	#if !PERL_VERSION_ATLEAST (5,9,0)	681	#if !PERL_VERSION_ATLEAST (5,10,0)
577	rss += coro->retstack_max * sizeof (OP *);	682	rss += slot->retstack_max * sizeof (OP *);
578	#endif	683	#endif
		684	}
579	}	685	}
580		686
581	return rss;	687	return rss;
582	}	688	}
583		689
584	/** coroutine stack handling ************************************************/	690	/** coroutine stack handling ************************************************/
		691
		692	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		693	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		694	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		695
		696	/* apparently < 5.8.8 */
		697	#ifndef MgPV_nolen_const
		698	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		699	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		700	(const char*)(mg)->mg_ptr)
		701	#endif
		702
		703	/*
		704	* This overrides the default magic get method of %SIG elements.
		705	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		706	* and instead of tryign to save and restore the hash elements, we just provide
		707	* readback here.
		708	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		709	* not expecting this to actually change the hook. This is a potential problem
		710	* when a schedule happens then, but we ignore this.
		711	*/
		712	static int
		713	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		714	{
		715	const char *s = MgPV_nolen_const (mg);
		716
		717	if (*s == '_')
		718	{
		719	SV **svp = 0;
		720
		721	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		722	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		723
		724	if (svp)
		725	{
		726	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		727	return 0;
		728	}
		729	}
		730
		731	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		732	}
		733
		734	static int
		735	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		736	{
		737	const char *s = MgPV_nolen_const (mg);
		738
		739	if (*s == '_')
		740	{
		741	SV **svp = 0;
		742
		743	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		744	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		745
		746	if (svp)
		747	{
		748	SV *old = *svp;
		749	*svp = 0;
		750	SvREFCNT_dec (old);
		751	return 0;
		752	}
		753	}
		754
		755	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		756	}
		757
		758	static int
		759	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		760	{
		761	const char *s = MgPV_nolen_const (mg);
		762
		763	if (*s == '_')
		764	{
		765	SV **svp = 0;
		766
		767	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		768	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		769
		770	if (svp)
		771	{
		772	SV *old = *svp;
		773	*svp = newSVsv (sv);
		774	SvREFCNT_dec (old);
		775	return 0;
		776	}
		777	}
		778
		779	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		780	}
585		781
586	static void	782	static void
587	coro_setup (pTHX_ struct coro *coro)	783	coro_setup (pTHX_ struct coro *coro)
588	{	784	{
589	/*	785	/*
…		…
594	PL_runops = RUNOPS_DEFAULT;	790	PL_runops = RUNOPS_DEFAULT;
595	PL_curcop = &PL_compiling;	791	PL_curcop = &PL_compiling;
596	PL_in_eval = EVAL_NULL;	792	PL_in_eval = EVAL_NULL;
597	PL_comppad = 0;	793	PL_comppad = 0;
598	PL_curpm = 0;	794	PL_curpm = 0;
		795	PL_curpad = 0;
599	PL_localizing = 0;	796	PL_localizing = 0;
600	PL_dirty = 0;	797	PL_dirty = 0;
601	PL_restartop = 0;	798	PL_restartop = 0;
		799	#if PERL_VERSION_ATLEAST (5,10,0)
		800	PL_parser = 0;
		801	#endif
		802
		803	/* recreate the die/warn hooks */
		804	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		805	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
602		806
603	GvSV (PL_defgv) = NEWSV (0, 0);	807	GvSV (PL_defgv) = newSV (0);
604	GvAV (PL_defgv) = coro->args; coro->args = 0;	808	GvAV (PL_defgv) = coro->args; coro->args = 0;
605	GvSV (PL_errgv) = NEWSV (0, 0);	809	GvSV (PL_errgv) = newSV (0);
606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), irsgv, PERL_MAGIC_sv, "/", 1);	810	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
607	PL_rs = newSVsv (GvSV (irsgv));	811	PL_rs = newSVsv (GvSV (irsgv));
608		812	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
609	{
610	IO *io = newIO ();
611	GvIOp(PL_defoutgv) = io;
612	IoTYPE (io) = IoTYPE_WRONLY;
613	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
614	IoFLAGS (io) |= IOf_FLUSH;
615	}
616		813
617	{	814	{
618	dSP;	815	dSP;
619	LOGOP myop;	816	LOGOP myop;
620		817
621	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
622	myop.op_next = Nullop;	819	myop.op_next = Nullop;
623	myop.op_flags = OPf_WANT_VOID;	820	myop.op_flags = OPf_WANT_VOID;
624		821
625	PUSHMARK (SP);	822	PUSHMARK (SP);
626	XPUSHs (av_shift (GvAV (PL_defgv)));	823	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
627	PUTBACK;	824	PUTBACK;
628	PL_op = (OP *)&myop;	825	PL_op = (OP *)&myop;
629	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	826	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
630	SPAGAIN;	827	SPAGAIN;
631	}	828	}
632		829
633	ENTER; /* necessary e.g. for dounwind */	830	/* this newly created coroutine might be run on an existing cctx which most
		831	* likely was suspended in set_stacklevel, called from entersub.
		832	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		833	* so we ENTER here for symmetry
		834	*/
		835	ENTER;
634	}	836	}
635		837
636	static void	838	static void
637	coro_destroy (pTHX_ struct coro *coro)	839	coro_destroy (pTHX_ struct coro *coro)
638	{	840	{
…		…
654	}	856	}
655		857
656	SvREFCNT_dec (GvSV (PL_defgv));	858	SvREFCNT_dec (GvSV (PL_defgv));
657	SvREFCNT_dec (GvAV (PL_defgv));	859	SvREFCNT_dec (GvAV (PL_defgv));
658	SvREFCNT_dec (GvSV (PL_errgv));	860	SvREFCNT_dec (GvSV (PL_errgv));
659	SvREFCNT_dec (GvIOp(PL_defoutgv));	861	SvREFCNT_dec (PL_defoutgv);
660	SvREFCNT_dec (PL_rs);	862	SvREFCNT_dec (PL_rs);
661	SvREFCNT_dec (GvSV (irsgv));	863	SvREFCNT_dec (GvSV (irsgv));
662		864
		865	SvREFCNT_dec (PL_diehook);
		866	SvREFCNT_dec (PL_warnhook);
		867
		868	SvREFCNT_dec (coro->saved_deffh);
		869	SvREFCNT_dec (coro->throw);
		870
663	coro_destroy_stacks (aTHX);	871	coro_destroy_stacks (aTHX);
664	}	872	}
665		873
666	static void	874	static void
667	free_coro_mortal (pTHX)	875	free_coro_mortal (pTHX)
668	{	876	{
669	if (coro_mortal)	877	if (expect_true (coro_mortal))
670	{	878	{
671	SvREFCNT_dec (coro_mortal);	879	SvREFCNT_dec (coro_mortal);
672	coro_mortal = 0;	880	coro_mortal = 0;
673	}	881	}
674	}	882	}
…		…
703	bot = PL_stack_base + cx->blk_oldsp + 1;	911	bot = PL_stack_base + cx->blk_oldsp + 1;
704	top = cx->blk_gimme == G_ARRAY ? SP + 1	912	top = cx->blk_gimme == G_ARRAY ? SP + 1
705	: cx->blk_gimme == G_SCALAR ? bot + 1	913	: cx->blk_gimme == G_SCALAR ? bot + 1
706	: bot;	914	: bot;
707		915
		916	av_extend (av, top - bot);
708	while (bot < top)	917	while (bot < top)
709	av_push (av, SvREFCNT_inc (*bot++));	918	av_push (av, SvREFCNT_inc (*bot++));
710		919
711	PL_runops = RUNOPS_DEFAULT;	920	PL_runops = RUNOPS_DEFAULT;
712	ENTER;	921	ENTER;
…		…
752	SAVETMPS;	961	SAVETMPS;
753	EXTEND (SP, 3);	962	EXTEND (SP, 3);
754	PUSHMARK (SP);	963	PUSHMARK (SP);
755	PUSHs (&PL_sv_yes);	964	PUSHs (&PL_sv_yes);
756	PUSHs (fullname);	965	PUSHs (fullname);
757	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	966	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
758	PUTBACK;	967	PUTBACK;
759	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	968	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
760	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	969	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
761	SPAGAIN;	970	SPAGAIN;
762	FREETMPS;	971	FREETMPS;
…		…
798		1007
799	/* inject a fake call to Coro::State::_cctx_init into the execution */	1008	/* inject a fake call to Coro::State::_cctx_init into the execution */
800	/* _cctx_init should be careful, as it could be called at almost any time */	1009	/* _cctx_init should be careful, as it could be called at almost any time */
801	/* during execution of a perl program */	1010	/* during execution of a perl program */
802	static void NOINLINE	1011	static void NOINLINE
803	prepare_cctx (pTHX_ coro_cctx *cctx)	1012	cctx_prepare (pTHX_ coro_cctx *cctx)
804	{	1013	{
805	dSP;	1014	dSP;
806	LOGOP myop;	1015	LOGOP myop;
807		1016
808	PL_top_env = &PL_start_env;	1017	PL_top_env = &PL_start_env;
…		…
826		1035
827	/*	1036	/*
828	* this is a _very_ stripped down perl interpreter ;)	1037	* this is a _very_ stripped down perl interpreter ;)
829	*/	1038	*/
830	static void	1039	static void
831	coro_run (void *arg)	1040	cctx_run (void *arg)
832	{	1041	{
833	dTHX;	1042	dTHX;
834		1043
835	/* coro_run is the alternative tail of transfer(), so unlock here. */	1044	/* cctx_run is the alternative tail of transfer(), so unlock here. */
836	UNLOCK;	1045	UNLOCK;
837		1046
838	/* we now skip the entersub that lead to transfer() */	1047	/* we now skip the entersub that lead to transfer() */
839	PL_op = PL_op->op_next;	1048	PL_op = PL_op->op_next;
840		1049
841	/* inject a fake subroutine call to cctx_init */	1050	/* inject a fake subroutine call to cctx_init */
842	prepare_cctx (aTHX_ (coro_cctx *)arg);	1051	cctx_prepare (aTHX_ (coro_cctx *)arg);
843		1052
844	/* somebody or something will hit me for both perl_run and PL_restartop */	1053	/* somebody or something will hit me for both perl_run and PL_restartop */
845	PL_restartop = PL_op;	1054	PL_restartop = PL_op;
846	perl_run (PL_curinterp);	1055	perl_run (PL_curinterp);
847		1056
…		…
866	++cctx_count;	1075	++cctx_count;
867		1076
868	Newz (0, cctx, 1, coro_cctx);	1077	Newz (0, cctx, 1, coro_cctx);
869		1078
870	#if HAVE_MMAP	1079	#if HAVE_MMAP
871
872	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1080	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
873	/* mmap supposedly does allocate-on-write for us */	1081	/* mmap supposedly does allocate-on-write for us */
874	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1082	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
875		1083
876	if (cctx->sptr != (void *)-1)	1084	if (cctx->sptr != (void *)-1)
…		…
897	stack_start = cctx->sptr;	1105	stack_start = cctx->sptr;
898	stack_size = cctx->ssize;	1106	stack_size = cctx->ssize;
899	}	1107	}
900		1108
901	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1109	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
902	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1110	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
903		1111
904	return cctx;	1112	return cctx;
905	}	1113	}
906		1114
907	static void	1115	static void
…		…
924	Safefree (cctx->sptr);	1132	Safefree (cctx->sptr);
925		1133
926	Safefree (cctx);	1134	Safefree (cctx);
927	}	1135	}
928		1136
		1137	/* wether this cctx should be destructed */
		1138	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1139
929	static coro_cctx *	1140	static coro_cctx *
930	cctx_get (pTHX)	1141	cctx_get (pTHX)
931	{	1142	{
932	while (cctx_first)	1143	while (expect_true (cctx_first))
933	{	1144	{
934	coro_cctx *cctx = cctx_first;	1145	coro_cctx *cctx = cctx_first;
935	cctx_first = cctx->next;	1146	cctx_first = cctx->next;
936	--cctx_idle;	1147	--cctx_idle;
937		1148
938	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1149	if (expect_true (!CCTX_EXPIRED (cctx)))
939	return cctx;	1150	return cctx;
940		1151
941	cctx_destroy (cctx);	1152	cctx_destroy (cctx);
942	}	1153	}
943		1154
…		…
946		1157
947	static void	1158	static void
948	cctx_put (coro_cctx *cctx)	1159	cctx_put (coro_cctx *cctx)
949	{	1160	{
950	/* free another cctx if overlimit */	1161	/* free another cctx if overlimit */
951	if (cctx_idle >= MAX_IDLE_CCTX)	1162	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
952	{	1163	{
953	coro_cctx *first = cctx_first;	1164	coro_cctx *first = cctx_first;
954	cctx_first = first->next;	1165	cctx_first = first->next;
955	--cctx_idle;	1166	--cctx_idle;
956		1167
…		…
962	cctx_first = cctx;	1173	cctx_first = cctx;
963	}	1174	}
964		1175
965	/** coroutine switching *****************************************************/	1176	/** coroutine switching *****************************************************/
966		1177
967	static void NOINLINE	1178	static void
968	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1179	transfer_check (pTHX_ struct coro *prev, struct coro *next)
969	{	1180	{
970	if (prev != next)	1181	if (expect_true (prev != next))
971	{	1182	{
972	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1183	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
973	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1184	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
974		1185
975	if (next->flags & CF_RUNNING)	1186	if (expect_false (next->flags & CF_RUNNING))
976	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1187	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
977		1188
978	if (next->flags & CF_DESTROYED)	1189	if (expect_false (next->flags & CF_DESTROYED))
979	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1190	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
980		1191
		1192	#if !PERL_VERSION_ATLEAST (5,10,0)
981	if (PL_lex_state != LEX_NOTPARSING)	1193	if (expect_false (PL_lex_state != LEX_NOTPARSING))
982	croak ("Coro::State::transfer called while parsing, but this is not supported");	1194	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1195	#endif
983	}	1196	}
984	}	1197	}
985		1198
986	/* always use the TRANSFER macro */	1199	/* always use the TRANSFER macro */
987	static void NOINLINE	1200	static void NOINLINE
988	transfer (pTHX_ struct coro *prev, struct coro *next)	1201	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
989	{	1202	{
990	dSTACKLEVEL;	1203	dSTACKLEVEL;
		1204	static volatile int has_throw;
991		1205
992	/* sometimes transfer is only called to set idle_sp */	1206	/* sometimes transfer is only called to set idle_sp */
993	if (!next)	1207	if (expect_false (!next))
994	{	1208	{
995	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1209	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
996	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1210	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
997	}	1211	}
998	else if (prev != next)	1212	else if (expect_true (prev != next))
999	{	1213	{
1000	coro_cctx *prev__cctx;	1214	coro_cctx *prev__cctx;
1001		1215
1002	if (prev->flags & CF_NEW)	1216	if (expect_false (prev->flags & CF_NEW))
1003	{	1217	{
1004	/* create a new empty context */	1218	/* create a new empty context */
1005	Newz (0, prev->cctx, 1, coro_cctx);	1219	Newz (0, prev->cctx, 1, coro_cctx);
1006	prev->flags &= ~CF_NEW;	1220	prev->flags &= ~CF_NEW;
1007	prev->flags |= CF_RUNNING;	1221	prev->flags |= CF_RUNNING;
…		…
1010	prev->flags &= ~CF_RUNNING;	1224	prev->flags &= ~CF_RUNNING;
1011	next->flags |= CF_RUNNING;	1225	next->flags |= CF_RUNNING;
1012		1226
1013	LOCK;	1227	LOCK;
1014		1228
		1229	/* first get rid of the old state */
		1230	save_perl (aTHX_ prev);
		1231
1015	if (next->flags & CF_NEW)	1232	if (expect_false (next->flags & CF_NEW))
1016	{	1233	{
1017	/* need to start coroutine */	1234	/* need to start coroutine */
1018	next->flags &= ~CF_NEW;	1235	next->flags &= ~CF_NEW;
1019	/* first get rid of the old state */
1020	save_perl (aTHX_ prev);
1021	/* setup coroutine call */	1236	/* setup coroutine call */
1022	coro_setup (aTHX_ next);	1237	coro_setup (aTHX_ next);
1023	}	1238	}
1024	else	1239	else
1025	{
1026	/* coroutine already started */
1027	save_perl (aTHX_ prev);
1028	load_perl (aTHX_ next);	1240	load_perl (aTHX_ next);
1029	}
1030		1241
1031	prev__cctx = prev->cctx;	1242	prev__cctx = prev->cctx;
1032		1243
1033	/* possibly "free" the cctx */	1244	/* possibly "free" the cctx */
1034	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1245	if (expect_true (
		1246	prev__cctx->idle_sp == STACKLEVEL
		1247	&& !(prev__cctx->flags & CC_TRACE)
		1248	&& !force_cctx
		1249	))
1035	{	1250	{
1036	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1251	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1037	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1252	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1038		1253
1039	prev->cctx = 0;	1254	prev->cctx = 0;
1040		1255
		1256	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1257	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1258	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1259	if (!next->cctx)
		1260	next->cctx = cctx_get (aTHX);
		1261
1041	cctx_put (prev__cctx);	1262	cctx_put (prev__cctx);
1042	}	1263	}
1043		1264
1044	++next->usecount;	1265	++next->usecount;
1045		1266
1046	if (!next->cctx)	1267	if (expect_true (!next->cctx))
1047	next->cctx = cctx_get (aTHX);	1268	next->cctx = cctx_get (aTHX);
1048		1269
		1270	has_throw = !!next->throw;
		1271
1049	if (prev__cctx != next->cctx)	1272	if (expect_false (prev__cctx != next->cctx))
1050	{	1273	{
1051	prev__cctx->top_env = PL_top_env;	1274	prev__cctx->top_env = PL_top_env;
1052	PL_top_env = next->cctx->top_env;	1275	PL_top_env = next->cctx->top_env;
1053	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1276	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1054	}	1277	}
1055		1278
1056	free_coro_mortal (aTHX);	1279	free_coro_mortal (aTHX);
1057	UNLOCK;	1280	UNLOCK;
		1281
		1282	if (expect_false (has_throw))
		1283	{
		1284	struct coro *coro = SvSTATE (coro_current);
		1285
		1286	if (coro->throw)
		1287	{
		1288	SV *exception = coro->throw;
		1289	coro->throw = 0;
		1290	sv_setsv (ERRSV, exception);
		1291	croak (0);
		1292	}
		1293	}
1058	}	1294	}
1059	}	1295	}
1060		1296
1061	struct transfer_args	1297	struct transfer_args
1062	{	1298	{
1063	struct coro *prev, *next;	1299	struct coro *prev, *next;
1064	};	1300	};
1065		1301
1066	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1302	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1067	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1303	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1068		1304
1069	/** high level stuff ********************************************************/	1305	/** high level stuff ********************************************************/
1070		1306
1071	static int	1307	static int
…		…
1097	save_perl (aTHX_ &temp);	1333	save_perl (aTHX_ &temp);
1098	load_perl (aTHX_ coro);	1334	load_perl (aTHX_ coro);
1099		1335
1100	coro_destroy (aTHX_ coro);	1336	coro_destroy (aTHX_ coro);
1101		1337
1102	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1338	load_perl (aTHX_ &temp);
1103		1339
1104	coro->mainstack = 0;	1340	coro->slot = 0;
1105	}	1341	}
1106		1342
1107	cctx_destroy (coro->cctx);	1343	cctx_destroy (coro->cctx);
1108	SvREFCNT_dec (coro->args);	1344	SvREFCNT_dec (coro->args);
1109		1345
…		…
1165	{	1401	{
1166	dTHX;	1402	dTHX;
1167	struct transfer_args ta;	1403	struct transfer_args ta;
1168		1404
1169	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1405	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1170	TRANSFER (ta);	1406	TRANSFER (ta, 1);
1171	}	1407	}
1172		1408
1173	/** Coro ********************************************************************/	1409	/** Coro ********************************************************************/
1174		1410
1175	static void	1411	static void
…		…
1177	{	1413	{
1178	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1414	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1179	}	1415	}
1180		1416
1181	static SV *	1417	static SV *
1182	coro_deq (pTHX_ int min_prio)	1418	coro_deq (pTHX)
1183	{	1419	{
1184	int prio = PRIO_MAX - PRIO_MIN;	1420	int prio;
1185		1421
1186	min_prio -= PRIO_MIN;
1187	if (min_prio < 0)
1188	min_prio = 0;
1189
1190	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1422	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1191	if (AvFILLp (coro_ready [prio]) >= 0)	1423	if (AvFILLp (coro_ready [prio]) >= 0)
1192	return av_shift (coro_ready [prio]);	1424	return av_shift (coro_ready [prio]);
1193		1425
1194	return 0;	1426	return 0;
1195	}	1427	}
…		…
1197	static int	1429	static int
1198	api_ready (SV *coro_sv)	1430	api_ready (SV *coro_sv)
1199	{	1431	{
1200	dTHX;	1432	dTHX;
1201	struct coro *coro;	1433	struct coro *coro;
		1434	SV *sv_hook;
		1435	void (*xs_hook)(void);
1202		1436
1203	if (SvROK (coro_sv))	1437	if (SvROK (coro_sv))
1204	coro_sv = SvRV (coro_sv);	1438	coro_sv = SvRV (coro_sv);
1205		1439
1206	coro = SvSTATE (coro_sv);	1440	coro = SvSTATE (coro_sv);
…		…
1209	return 0;	1443	return 0;
1210		1444
1211	coro->flags |= CF_READY;	1445	coro->flags |= CF_READY;
1212		1446
1213	LOCK;	1447	LOCK;
		1448
		1449	sv_hook = coro_nready ? 0 : coro_readyhook;
		1450	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1451
1214	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1452	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1215	++coro_nready;	1453	++coro_nready;
		1454
1216	UNLOCK;	1455	UNLOCK;
		1456
		1457	if (sv_hook)
		1458	{
		1459	dSP;
		1460
		1461	ENTER;
		1462	SAVETMPS;
		1463
		1464	PUSHMARK (SP);
		1465	PUTBACK;
		1466	call_sv (sv_hook, G_DISCARD);
		1467	SPAGAIN;
		1468
		1469	FREETMPS;
		1470	LEAVE;
		1471	}
		1472
		1473	if (xs_hook)
		1474	xs_hook ();
1217		1475
1218	return 1;	1476	return 1;
1219	}	1477	}
1220		1478
1221	static int	1479	static int
…		…
1231	SV *prev_sv, *next_sv;	1489	SV *prev_sv, *next_sv;
1232		1490
1233	for (;;)	1491	for (;;)
1234	{	1492	{
1235	LOCK;	1493	LOCK;
1236	next_sv = coro_deq (aTHX_ PRIO_MIN);	1494	next_sv = coro_deq (aTHX);
1237		1495
1238	/* nothing to schedule: call the idle handler */	1496	/* nothing to schedule: call the idle handler */
1239	if (!next_sv)	1497	if (expect_false (!next_sv))
1240	{	1498	{
1241	dSP;	1499	dSP;
1242	UNLOCK;	1500	UNLOCK;
1243		1501
1244	ENTER;	1502	ENTER;
1245	SAVETMPS;	1503	SAVETMPS;
1246		1504
1247	PUSHMARK (SP);	1505	PUSHMARK (SP);
1248	PUTBACK;	1506	PUTBACK;
1249	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1507	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1508	SPAGAIN;
1250		1509
1251	FREETMPS;	1510	FREETMPS;
1252	LEAVE;	1511	LEAVE;
1253	continue;	1512	continue;
1254	}	1513	}
1255		1514
1256	ta->next = SvSTATE (next_sv);	1515	ta->next = SvSTATE (next_sv);
1257		1516
1258	/* cannot transfer to destroyed coros, skip and look for next */	1517	/* cannot transfer to destroyed coros, skip and look for next */
1259	if (ta->next->flags & CF_DESTROYED)	1518	if (expect_false (ta->next->flags & CF_DESTROYED))
1260	{	1519	{
1261	UNLOCK;	1520	UNLOCK;
1262	SvREFCNT_dec (next_sv);	1521	SvREFCNT_dec (next_sv);
1263	/* coro_nready is already taken care of by destroy */	1522	/* coro_nready is already taken care of by destroy */
1264	continue;	1523	continue;
…		…
1309	{	1568	{
1310	dTHX;	1569	dTHX;
1311	struct transfer_args ta;	1570	struct transfer_args ta;
1312		1571
1313	prepare_schedule (aTHX_ &ta);	1572	prepare_schedule (aTHX_ &ta);
1314	TRANSFER (ta);	1573	TRANSFER (ta, 1);
1315	}	1574	}
1316		1575
1317	static int	1576	static int
1318	api_cede (void)	1577	api_cede (void)
1319	{	1578	{
1320	dTHX;	1579	dTHX;
1321	struct transfer_args ta;	1580	struct transfer_args ta;
1322		1581
1323	prepare_cede (aTHX_ &ta);	1582	prepare_cede (aTHX_ &ta);
1324		1583
1325	if (ta.prev != ta.next)	1584	if (expect_true (ta.prev != ta.next))
1326	{	1585	{
1327	TRANSFER (ta);	1586	TRANSFER (ta, 1);
1328	return 1;	1587	return 1;
1329	}	1588	}
1330	else	1589	else
1331	return 0;	1590	return 0;
1332	}	1591	}
…		…
1337	dTHX;	1596	dTHX;
1338	struct transfer_args ta;	1597	struct transfer_args ta;
1339		1598
1340	if (prepare_cede_notself (aTHX_ &ta))	1599	if (prepare_cede_notself (aTHX_ &ta))
1341	{	1600	{
1342	TRANSFER (ta);	1601	TRANSFER (ta, 1);
1343	return 1;	1602	return 1;
1344	}	1603	}
1345	else	1604	else
1346	return 0;	1605	return 0;
1347	}	1606	}
…		…
1366	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1625	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1367		1626
1368	if (coro->flags & CF_RUNNING)	1627	if (coro->flags & CF_RUNNING)
1369	PL_runops = RUNOPS_DEFAULT;	1628	PL_runops = RUNOPS_DEFAULT;
1370	else	1629	else
1371	coro->runops = RUNOPS_DEFAULT;	1630	coro->slot->runops = RUNOPS_DEFAULT;
1372	}	1631	}
1373	}	1632	}
		1633
		1634	static int
		1635	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1636	{
		1637	AV *padlist;
		1638	AV *av = (AV *)mg->mg_obj;
		1639
		1640	abort ();
		1641
		1642	return 0;
		1643	}
		1644
		1645	static MGVTBL coro_gensub_vtbl = {
		1646	0, 0, 0, 0,
		1647	coro_gensub_free
		1648	};
1374		1649
1375	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1650	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1376		1651
1377	PROTOTYPES: DISABLE	1652	PROTOTYPES: DISABLE
1378		1653
…		…
1381	#ifdef USE_ITHREADS	1656	#ifdef USE_ITHREADS
1382	MUTEX_INIT (&coro_mutex);	1657	MUTEX_INIT (&coro_mutex);
1383	#endif	1658	#endif
1384	BOOT_PAGESIZE;	1659	BOOT_PAGESIZE;
1385		1660
1386	irsgv = gv_fetchpv ("/", 1, SVt_PV);	1661	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1662	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1663
		1664	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1665	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1666	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1667
		1668	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1669	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1670	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1387		1671
1388	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1672	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1389		1673
1390	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1674	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1391	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1675	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1396	main_top_env = PL_top_env;	1680	main_top_env = PL_top_env;
1397		1681
1398	while (main_top_env->je_prev)	1682	while (main_top_env->je_prev)
1399	main_top_env = main_top_env->je_prev;	1683	main_top_env = main_top_env->je_prev;
1400		1684
1401	coroapi.ver = CORO_API_VERSION;	1685	coroapi.ver = CORO_API_VERSION;
		1686	coroapi.rev = CORO_API_REVISION;
1402	coroapi.transfer = api_transfer;	1687	coroapi.transfer = api_transfer;
1403		1688
1404	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1689	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1405	}	1690	}
1406		1691
1407	SV *	1692	SV *
1408	new (char *klass, ...)	1693	new (char *klass, ...)
1409	CODE:	1694	CODE:
1410	{	1695	{
1411	struct coro *coro;	1696	struct coro *coro;
		1697	MAGIC *mg;
1412	HV *hv;	1698	HV *hv;
1413	int i;	1699	int i;
1414		1700
1415	Newz (0, coro, 1, struct coro);	1701	Newz (0, coro, 1, struct coro);
1416	coro->args = newAV ();	1702	coro->args = newAV ();
…		…
1419	if (coro_first) coro_first->prev = coro;	1705	if (coro_first) coro_first->prev = coro;
1420	coro->next = coro_first;	1706	coro->next = coro_first;
1421	coro_first = coro;	1707	coro_first = coro;
1422		1708
1423	coro->hv = hv = newHV ();	1709	coro->hv = hv = newHV ();
1424	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1710	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1711	mg->mg_flags |= MGf_DUP;
1425	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1712	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1426		1713
		1714	av_extend (coro->args, items - 1);
1427	for (i = 1; i < items; i++)	1715	for (i = 1; i < items; i++)
1428	av_push (coro->args, newSVsv (ST (i)));	1716	av_push (coro->args, newSVsv (ST (i)));
1429	}	1717	}
1430	OUTPUT:	1718	OUTPUT:
1431	RETVAL	1719	RETVAL
…		…
1442	Coro::cede_notself = 4	1730	Coro::cede_notself = 4
1443	CODE:	1731	CODE:
1444	{	1732	{
1445	struct transfer_args ta;	1733	struct transfer_args ta;
1446		1734
		1735	PUTBACK;
1447	switch (ix)	1736	switch (ix)
1448	{	1737	{
1449	case 0:	1738	case 0:
1450	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1739	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1451	ta.next = 0;	1740	ta.next = 0;
…		…
1470	if (!prepare_cede_notself (aTHX_ &ta))	1759	if (!prepare_cede_notself (aTHX_ &ta))
1471	XSRETURN_EMPTY;	1760	XSRETURN_EMPTY;
1472		1761
1473	break;	1762	break;
1474	}	1763	}
		1764	SPAGAIN;
1475		1765
1476	BARRIER;	1766	BARRIER;
		1767	PUTBACK;
1477	TRANSFER (ta);	1768	TRANSFER (ta, 0);
1478		1769	SPAGAIN; /* might be the sp of a different coroutine now */
1479	if (GIMME_V != G_VOID && ta.next != ta.prev)	1770	/* be extra careful not to ever do anything after TRANSFER */
1480	XSRETURN_YES;
1481	}	1771	}
1482		1772
1483	bool	1773	bool
1484	_destroy (SV *coro_sv)	1774	_destroy (SV *coro_sv)
1485	CODE:	1775	CODE:
1486	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1776	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1487	OUTPUT:	1777	OUTPUT:
1488	RETVAL	1778	RETVAL
1489		1779
1490	void	1780	void
1491	_exit (code)	1781	_exit (int code)
1492	int code
1493	PROTOTYPE: $	1782	PROTOTYPE: $
1494	CODE:	1783	CODE:
1495	_exit (code);	1784	_exit (code);
1496		1785
1497	int	1786	int
…		…
1531	call (Coro::State coro, SV *coderef)	1820	call (Coro::State coro, SV *coderef)
1532	ALIAS:	1821	ALIAS:
1533	eval = 1	1822	eval = 1
1534	CODE:	1823	CODE:
1535	{	1824	{
1536	if (coro->mainstack)	1825	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1537	{	1826	{
1538	struct coro temp;	1827	struct coro temp;
1539	Zero (&temp, 1, struct coro);
1540		1828
1541	if (!(coro->flags & CF_RUNNING))	1829	if (!(coro->flags & CF_RUNNING))
1542	{	1830	{
		1831	PUTBACK;
1543	save_perl (aTHX_ &temp);	1832	save_perl (aTHX_ &temp);
1544	load_perl (aTHX_ coro);	1833	load_perl (aTHX_ coro);
1545	}	1834	}
1546		1835
1547	{	1836	{
1548	dSP;	1837	dSP;
1549	ENTER;	1838	ENTER;
1550	SAVETMPS;	1839	SAVETMPS;
		1840	PUTBACK;
		1841	PUSHSTACK;
1551	PUSHMARK (SP);	1842	PUSHMARK (SP);
1552	PUTBACK;	1843
1553	if (ix)	1844	if (ix)
1554	eval_sv (coderef, 0);	1845	eval_sv (coderef, 0);
1555	else	1846	else
1556	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1847	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1848
		1849	POPSTACK;
1557	SPAGAIN;	1850	SPAGAIN;
1558	FREETMPS;	1851	FREETMPS;
1559	LEAVE;	1852	LEAVE;
1560	PUTBACK;	1853	PUTBACK;
1561	}	1854	}
1562		1855
1563	if (!(coro->flags & CF_RUNNING))	1856	if (!(coro->flags & CF_RUNNING))
1564	{	1857	{
1565	save_perl (aTHX_ coro);	1858	save_perl (aTHX_ coro);
1566	load_perl (aTHX_ &temp);	1859	load_perl (aTHX_ &temp);
		1860	SPAGAIN;
1567	}	1861	}
1568	}	1862	}
1569	}	1863	}
1570		1864
1571	SV *	1865	SV *
…		…
1583		1877
1584	void	1878	void
1585	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1879	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1586		1880
1587	SV *	1881	SV *
1588	has_stack (Coro::State coro)	1882	has_cctx (Coro::State coro)
1589	PROTOTYPE: $	1883	PROTOTYPE: $
1590	CODE:	1884	CODE:
1591	RETVAL = boolSV (!!coro->cctx);	1885	RETVAL = boolSV (!!coro->cctx);
1592	OUTPUT:	1886	OUTPUT:
1593	RETVAL	1887	RETVAL
…		…
1612	case 1: RETVAL = coro->usecount; break;	1906	case 1: RETVAL = coro->usecount; break;
1613	}	1907	}
1614	OUTPUT:	1908	OUTPUT:
1615	RETVAL	1909	RETVAL
1616		1910
		1911	void
		1912	force_cctx ()
		1913	CODE:
		1914	struct coro *coro = SvSTATE (coro_current);
		1915	coro->cctx->idle_sp = 0;
		1916
		1917	void
		1918	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1919	PROTOTYPE: $;$
		1920	CODE:
		1921	SvREFCNT_dec (self->throw);
		1922	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1923
		1924	void
		1925	swap_defsv (Coro::State self)
		1926	PROTOTYPE: $
		1927	ALIAS:
		1928	swap_defav = 1
		1929	CODE:
		1930	if (!self->slot)
		1931	croak ("cannot swap state with coroutine that has no saved state");
		1932	else
		1933	{
		1934	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1935	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		1936
		1937	SV *tmp = *src; *src = *dst; *dst = tmp;
		1938	}
1617		1939
1618	MODULE = Coro::State PACKAGE = Coro	1940	MODULE = Coro::State PACKAGE = Coro
1619		1941
1620	BOOT:	1942	BOOT:
1621	{	1943	{
1622	int i;	1944	int i;
1623		1945
1624	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1625	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1626	av_async_pool = get_av ("Coro::async_pool", TRUE);	1946	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1947	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1948	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1627		1949
1628	coro_current = get_sv ("Coro::current", FALSE);	1950	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1629	SvREADONLY_on (coro_current);	1951	SvREADONLY_on (coro_current);
1630		1952
1631	coro_stash = gv_stashpv ("Coro", TRUE);	1953	coro_stash = gv_stashpv ("Coro", TRUE);
1632		1954
1633	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1955	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1634	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1956	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1635	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1957	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1636	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1958	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1639		1961
1640	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1962	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1641	coro_ready[i] = newAV ();	1963	coro_ready[i] = newAV ();
1642		1964
1643	{	1965	{
1644	SV *sv = perl_get_sv("Coro::API", 1);	1966	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1967	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1645		1968
1646	coroapi.schedule = api_schedule;	1969	coroapi.schedule = api_schedule;
1647	coroapi.cede = api_cede;	1970	coroapi.cede = api_cede;
1648	coroapi.cede_notself = api_cede_notself;	1971	coroapi.cede_notself = api_cede_notself;
1649	coroapi.ready = api_ready;	1972	coroapi.ready = api_ready;
…		…
1662	PROTOTYPE: $	1985	PROTOTYPE: $
1663	CODE:	1986	CODE:
1664	SvREFCNT_dec (SvRV (coro_current));	1987	SvREFCNT_dec (SvRV (coro_current));
1665	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1988	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1666		1989
		1990	void
		1991	_set_readyhook (SV *hook)
		1992	PROTOTYPE: $
		1993	CODE:
		1994	LOCK;
		1995	SvREFCNT_dec (coro_readyhook);
		1996	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1997	UNLOCK;
		1998
1667	int	1999	int
1668	prio (Coro::State coro, int newprio = 0)	2000	prio (Coro::State coro, int newprio = 0)
1669	ALIAS:	2001	ALIAS:
1670	nice = 1	2002	nice = 1
1671	CODE:	2003	CODE:
…		…
1705	# for async_pool speedup	2037	# for async_pool speedup
1706	void	2038	void
1707	_pool_1 (SV *cb)	2039	_pool_1 (SV *cb)
1708	CODE:	2040	CODE:
1709	{	2041	{
1710	int i, len;	2042	struct coro *coro = SvSTATE (coro_current);
1711	HV *hv = (HV *)SvRV (coro_current);	2043	HV *hv = (HV *)SvRV (coro_current);
1712	AV *defav = GvAV (PL_defgv);	2044	AV *defav = GvAV (PL_defgv);
1713	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2045	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1714	AV *invoke_av;	2046	AV *invoke_av;
		2047	int i, len;
1715		2048
1716	if (!invoke)	2049	if (!invoke)
		2050	{
		2051	SV *old = PL_diehook;
		2052	PL_diehook = 0;
		2053	SvREFCNT_dec (old);
1717	croak ("\3terminate\2\n");	2054	croak ("\3async_pool terminate\2\n");
		2055	}
		2056
		2057	SvREFCNT_dec (coro->saved_deffh);
		2058	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1718		2059
1719	hv_store (hv, "desc", sizeof ("desc") - 1,	2060	hv_store (hv, "desc", sizeof ("desc") - 1,
1720	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2061	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1721		2062
1722	invoke_av = (AV *)SvRV (invoke);	2063	invoke_av = (AV *)SvRV (invoke);
…		…
1740	{	2081	{
1741	struct coro *coro = SvSTATE (coro_current);	2082	struct coro *coro = SvSTATE (coro_current);
1742		2083
1743	sv_setsv (cb, &PL_sv_undef);	2084	sv_setsv (cb, &PL_sv_undef);
1744		2085
		2086	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2087	coro->saved_deffh = 0;
		2088
1745	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2089	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1746	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2090	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2091	{
		2092	SV *old = PL_diehook;
		2093	PL_diehook = 0;
		2094	SvREFCNT_dec (old);
1747	croak ("\3terminate\2\n");	2095	croak ("\3async_pool terminate\2\n");
		2096	}
1748		2097
1749	av_clear (GvAV (PL_defgv));	2098	av_clear (GvAV (PL_defgv));
1750	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2099	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1751	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2100	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1752		2101
…		…
1755	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2104	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1756	api_trace (coro_current, 0);	2105	api_trace (coro_current, 0);
1757		2106
1758	av_push (av_async_pool, newSVsv (coro_current));	2107	av_push (av_async_pool, newSVsv (coro_current));
1759	}	2108	}
		2109
		2110	#if 0
		2111
		2112	void
		2113	_generator_call (...)
		2114	PROTOTYPE: @
		2115	PPCODE:
		2116	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2117	xxxx
		2118	abort ();
		2119
		2120	SV *
		2121	gensub (SV *sub, ...)
		2122	PROTOTYPE: &;@
		2123	CODE:
		2124	{
		2125	struct coro *coro;
		2126	MAGIC *mg;
		2127	CV *xcv;
		2128	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2129	int i;
		2130
		2131	CvGV (ncv) = CvGV (cv);
		2132	CvFILE (ncv) = CvFILE (cv);
		2133
		2134	Newz (0, coro, 1, struct coro);
		2135	coro->args = newAV ();
		2136	coro->flags = CF_NEW;
		2137
		2138	av_extend (coro->args, items - 1);
		2139	for (i = 1; i < items; i++)
		2140	av_push (coro->args, newSVsv (ST (i)));
		2141
		2142	CvISXSUB_on (ncv);
		2143	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2144
		2145	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2146
		2147	CvXSUB (ncv) = CvXSUB (xcv);
		2148	CvANON_on (ncv);
		2149
		2150	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2151	RETVAL = newRV_noinc ((SV *)ncv);
		2152	}
		2153	OUTPUT:
		2154	RETVAL
		2155
		2156	#endif
1760		2157
1761		2158
1762	MODULE = Coro::State PACKAGE = Coro::AIO	2159	MODULE = Coro::State PACKAGE = Coro::AIO
1763		2160
1764	SV *	2161	SV *
…		…
1791	PL_laststype = data->laststype;	2188	PL_laststype = data->laststype;
1792	PL_laststatval = data->laststatval;	2189	PL_laststatval = data->laststatval;
1793	PL_statcache = data->statcache;	2190	PL_statcache = data->statcache;
1794	}	2191	}
1795		2192
		2193
		2194	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2195
		2196	BOOT:
		2197	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2198
		2199	SV *
		2200	_schedule (...)
		2201	PROTOTYPE: @
		2202	CODE:
		2203	{
		2204	static int incede;
		2205
		2206	api_cede_notself ();
		2207
		2208	++incede;
		2209	while (coro_nready >= incede && api_cede ())
		2210	;
		2211
		2212	sv_setsv (sv_activity, &PL_sv_undef);
		2213	if (coro_nready >= incede)
		2214	{
		2215	PUSHMARK (SP);
		2216	PUTBACK;
		2217	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2218	SPAGAIN;
		2219	}
		2220
		2221	--incede;
		2222	}
		2223

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