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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.190 by root, Fri Oct 5 20:39:39 2007 UTC vs.
Revision 1.240 by root, Sun Jun 29 00:28:17 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
79
80	/* 5.8.8 */
81	#ifndef GV_NOTQUAL
82	# define GV_NOTQUAL 0
83	#endif	101	#endif
84		102
85	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	103	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
86	# undef CORO_STACKGUARD	104	# undef CORO_STACKGUARD
87	#endif	105	#endif
…		…
103	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
104		122
105	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
106	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
107	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
108	#else	127	#else
109	# define attribute(x)	128	# define attribute(x)
110	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
111	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
112		135
113	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
114		137
115	#include "CoroAPI.h"	138	#include "CoroAPI.h"
116		139
…		…
135	static size_t coro_stacksize = CORO_STACKSIZE;	158	static size_t coro_stacksize = CORO_STACKSIZE;
136	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
137	static AV *main_mainstack; /* used to differentiate between $main and others */	160	static AV *main_mainstack; /* used to differentiate between $main and others */
138	static JMPENV *main_top_env;	161	static JMPENV *main_top_env;
139	static HV *coro_state_stash, *coro_stash;	162	static HV *coro_state_stash, *coro_stash;
140	static SV *coro_mortal; /* will be freed after next transfer */	163	static volatile SV *coro_mortal; /* will be freed after next transfer */
141		164
142	static GV *irsgv; /* $/ */	165	static GV *irsgv; /* $/ */
143	static GV *stdoutgv; /* *STDOUT */	166	static GV *stdoutgv; /* *STDOUT */
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV *hv_sig; /* %SIG */
144		170
145	/* async_pool helper stuff */	171	/* async_pool helper stuff */
146	static SV *sv_pool_rss;	172	static SV *sv_pool_rss;
147	static SV *sv_pool_size;	173	static SV *sv_pool_size;
148	static AV *av_async_pool;	174	static AV *av_async_pool;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
149		178
150	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
151	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
152		181
153	enum {	182	enum {
…		…
184	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
185	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
186	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
187	};	216	};
188		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
189	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
190	struct coro {	232	struct coro {
191	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
192	coro_cctx *cctx;	234	coro_cctx *cctx;
193		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots *slot; /* basically the saved sp */
		239
194	/* data associated with this coroutine (initial args) */	240	AV *args; /* data associated with this coroutine (initial args) */
195	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
196	int refcnt;
197	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
198		243	HV *hv; /* the perl hash associated with this coro, if any */
199	/* optionally saved, might be zero */
200	AV *defav; /* @_ */
201	SV *defsv; /* $_ */
202	SV *errsv; /* $@ */
203	SV *deffh; /* default filehandle */
204	SV *irssv; /* $/ */
205	SV *irssv_sv; /* real $/ cache */
206
207	#define VAR(name,type) type name;
208	# include "state.h"
209	#undef VAR
210		244
211	/* statistics */	245	/* statistics */
212	int usecount; /* number of transfers to this coro */	246	int usecount; /* number of transfers to this coro */
213		247
214	/* coro process data */	248	/* coro process data */
215	int prio;	249	int prio;
216	//SV *throw;	250	SV *throw; /* exception to be thrown */
217		251
218	/* async_pool */	252	/* async_pool */
219	SV *saved_deffh;	253	SV *saved_deffh;
220		254
221	/* linked list */	255	/* linked list */
222	struct coro *next, *prev;	256	struct coro *next, *prev;
223	HV *hv; /* the perl hash associated with this coro, if any */
224	};	257	};
225		258
226	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
227	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
228		261
…		…
235	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
236	#define PRIO_MIN -4	269	#define PRIO_MIN -4
237		270
238	/* for Coro.pm */	271	/* for Coro.pm */
239	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
240	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
241	static int coro_nready;	275	static int coro_nready;
242	static struct coro *coro_first;	276	static struct coro *coro_first;
243		277
244	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
245		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
246	static AV *	310	static AV *
247	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
248	{	312	{
249	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
250	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
251		315
252	newpadlist = newAV ();	316	newpadlist = newAV ();
253	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
254	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
255	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
256	#else	320	#else
257	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
258	#endif	322	#endif
259	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
297		361
298	/* casting is fun. */	362	/* casting is fun. */
299	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
300	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
301		365
302	SvREFCNT_dec (av);
303
304	return 0;	366	return 0;
305	}	367	}
306		368
307	#define PERL_MAGIC_coro PERL_MAGIC_ext	369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		370	#define CORO_MAGIC_type_state PERL_MAGIC_ext
308		371
309	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	372	static MGVTBL coro_cv_vtbl = {
		373	0, 0, 0, 0,
		374	coro_cv_free
		375	};
310		376
311	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
312	SvMAGIC (cv) \	378	SvMAGIC (sv) \
313	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
314	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
315	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
316	: 0	382	: 0
		383
		384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
317		386
318	static struct coro *	387	static struct coro *
319	SvSTATE_ (pTHX_ SV *coro)	388	SvSTATE_ (pTHX_ SV *coro)
320	{	389	{
321	HV *stash;	390	HV *stash;
322	MAGIC *mg;	391	MAGIC *mg;
323		392
324	if (SvROK (coro))	393	if (SvROK (coro))
325	coro = SvRV (coro);	394	coro = SvRV (coro);
326		395
327	if (SvTYPE (coro) != SVt_PVHV)	396	if (expect_false (SvTYPE (coro) != SVt_PVHV))
328	croak ("Coro::State object required");	397	croak ("Coro::State object required");
329		398
330	stash = SvSTASH (coro);	399	stash = SvSTASH (coro);
331	if (stash != coro_stash && stash != coro_state_stash)	400	if (expect_false (stash != coro_stash && stash != coro_state_stash))
332	{	401	{
333	/* very slow, but rare, check */	402	/* very slow, but rare, check */
334	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	403	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
335	croak ("Coro::State object required");	404	croak ("Coro::State object required");
336	}	405	}
337		406
338	mg = CORO_MAGIC (coro);	407	mg = CORO_MAGIC_state (coro);
339	return (struct coro *)mg->mg_ptr;	408	return (struct coro *)mg->mg_ptr;
340	}	409	}
341		410
342	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	411	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
343		412
344	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
345	static void	414	static void
346	get_padlist (pTHX_ CV *cv)	415	get_padlist (pTHX_ CV *cv)
347	{	416	{
348	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
349	AV *av;	418	AV *av;
350		419
351	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
352	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
353	else	422	else
354	{	423	{
355	#if CORO_PREFER_PERL_FUNCTIONS	424	#if CORO_PREFER_PERL_FUNCTIONS
356	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
…		…
365	}	434	}
366		435
367	static void	436	static void
368	put_padlist (pTHX_ CV *cv)	437	put_padlist (pTHX_ CV *cv)
369	{	438	{
370	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
371	AV *av;	440	AV *av;
372		441
373	if (!mg)	442	if (expect_false (!mg))
374	{	443	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
375	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
376	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
377	mg->mg_virtual = &vtbl_coro;
378	mg->mg_obj = (SV *)newAV ();
379	}
380		444
381	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
382		446
383	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
384	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
385		449
386	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
387	}	451	}
388		452
389	/** load & save, init *******************************************************/	453	/** load & save, init *******************************************************/
390		454
391	static void	455	static void
392	load_perl (pTHX_ Coro__State c)	456	load_perl (pTHX_ Coro__State c)
393	{	457	{
		458	perl_slots *slot = c->slot;
		459	c->slot = 0;
		460
		461	PL_mainstack = c->mainstack;
		462
		463	GvSV (PL_defgv) = slot->defsv;
		464	GvAV (PL_defgv) = slot->defav;
		465	GvSV (PL_errgv) = slot->errsv;
		466	GvSV (irsgv) = slot->irsgv;
		467
394	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
395	# include "state.h"	469	# include "state.h"
396	#undef VAR	470	#undef VAR
397
398	GvSV (PL_defgv) = c->defsv;
399	GvAV (PL_defgv) = c->defav;
400	GvSV (PL_errgv) = c->errsv;
401	GvSV (irsgv) = c->irssv_sv;
402		471
403	{	472	{
404	dSP;	473	dSP;
		474
405	CV *cv;	475	CV *cv;
406		476
407	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
408	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
409	{	479	{
410	put_padlist (aTHX_ cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
411	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
412	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
413	}	483	}
…		…
432		502
433	XPUSHs (Nullsv);	503	XPUSHs (Nullsv);
434	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
435	for (;;)	505	for (;;)
436	{	506	{
437	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
438	{	508	{
439	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
440		510
441	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	511	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
442	{	512	{
443	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
444		514
445	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
446	{	516	{
447	EXTEND (SP, 3);	517	EXTEND (SP, 3);
448	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
449	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
450	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
451		521
452	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
453	get_padlist (aTHX_ cv);	523	get_padlist (aTHX_ cv);
454	}	524	}
455	}	525	}
456	}	526	}
457		527
458	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
459	break;	529	break;
460		530
461	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
462	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
463	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
464	}	534	}
465		535
466	PUTBACK;	536	PUTBACK;
467	}	537	}
468		538
		539	/* allocate some space on the context stack for our purposes */
		540	/* we manually unroll here, as usually 2 slots is enough */
		541	if (SLOT_COUNT >= 1) CXINC;
		542	if (SLOT_COUNT >= 2) CXINC;
		543	if (SLOT_COUNT >= 3) CXINC;
		544	{
		545	int i;
		546	for (i = 3; i < SLOT_COUNT; ++i)
		547	CXINC;
		548	}
		549	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		550
		551	c->mainstack = PL_mainstack;
		552
		553	{
		554	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		555
469	c->defav = GvAV (PL_defgv);	556	slot->defav = GvAV (PL_defgv);
470	c->defsv = DEFSV;	557	slot->defsv = DEFSV;
471	c->errsv = ERRSV;	558	slot->errsv = ERRSV;
472	c->irssv_sv = GvSV (irsgv);	559	slot->irsgv = GvSV (irsgv);
473		560
474	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
475	# include "state.h"	562	# include "state.h"
476	#undef VAR	563	#undef VAR
		564	}
477	}	565	}
478		566
479	/*	567	/*
480	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
481	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
…		…
486	# define coro_init_stacks init_stacks	574	# define coro_init_stacks init_stacks
487	#else	575	#else
488	static void	576	static void
489	coro_init_stacks (pTHX)	577	coro_init_stacks (pTHX)
490	{	578	{
491	PL_curstackinfo = new_stackinfo(64, 6);	579	PL_curstackinfo = new_stackinfo(32, 8);
492	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
493	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
494	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
495		583
496	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
497	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
498	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
499		587
500	New(50,PL_tmps_stack,64,SV*);	588	New(50,PL_tmps_stack,32,SV*);
501	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
502	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
503	PL_tmps_max = 64;	591	PL_tmps_max = 32;
504		592
505	New(54,PL_markstack,16,I32);	593	New(54,PL_markstack,16,I32);
506	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
507	PL_markstack_max = PL_markstack + 16;	595	PL_markstack_max = PL_markstack + 16;
508		596
509	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
510	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
511	#endif	599	#endif
512		600
513	New(54,PL_scopestack,16,I32);	601	New(54,PL_scopestack,8,I32);
514	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
515	PL_scopestack_max = 16;	603	PL_scopestack_max = 8;
516		604
517	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
518	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
519	PL_savestack_max = 64;	607	PL_savestack_max = 24;
520		608
521	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
522	New(54,PL_retstack,4,OP*);	610	New(54,PL_retstack,4,OP*);
523	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
524	PL_retstack_max = 4;	612	PL_retstack_max = 4;
525	#endif	613	#endif
526	}	614	}
…		…
549		637
550	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
551	Safefree (PL_markstack);	639	Safefree (PL_markstack);
552	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
553	Safefree (PL_savestack);	641	Safefree (PL_savestack);
554	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
555	Safefree (PL_retstack);	643	Safefree (PL_retstack);
556	#endif	644	#endif
557	}	645	}
558		646
559	static size_t	647	static size_t
…		…
561	{	649	{
562	size_t rss = sizeof (*coro);	650	size_t rss = sizeof (*coro);
563		651
564	if (coro->mainstack)	652	if (coro->mainstack)
565	{	653	{
		654	perl_slots tmp_slot;
		655	perl_slots *slot;
		656
566	if (coro->flags & CF_RUNNING)	657	if (coro->flags & CF_RUNNING)
567	{	658	{
		659	slot = &tmp_slot;
		660
568	#define VAR(name,type)coro->name = PL_ ## name;	661	#define VAR(name,type) slot->name = PL_ ## name;
569	# include "state.h"	662	# include "state.h"
570	#undef VAR	663	#undef VAR
571	}	664	}
		665	else
		666	slot = coro->slot;
572		667
573	rss += sizeof (coro->curstackinfo);	668	rss += sizeof (slot->curstackinfo);
574	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
575	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
576	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
577	rss += coro->tmps_max * sizeof (SV *);	671	rss += slot->tmps_max * sizeof (SV *);
578	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
579	rss += coro->scopestack_max * sizeof (I32);	673	rss += slot->scopestack_max * sizeof (I32);
580	rss += coro->savestack_max * sizeof (ANY);	674	rss += slot->savestack_max * sizeof (ANY);
581		675
582	#if !PERL_VERSION_ATLEAST (5,9,0)	676	#if !PERL_VERSION_ATLEAST (5,10,0)
583	rss += coro->retstack_max * sizeof (OP *);	677	rss += slot->retstack_max * sizeof (OP *);
584	#endif	678	#endif
585	}	679	}
586		680
587	return rss;	681	return rss;
588	}	682	}
589		683
590	/** coroutine stack handling ************************************************/	684	/** coroutine stack handling ************************************************/
		685
		686	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		687	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		688	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		689
		690	/* apparently < 5.8.8 */
		691	#undef MgPV_nolen_const
		692	#ifndef MgPV_nolen_const
		693	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		694	SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \
		695	(const char*)(mg)->mg_ptr)
		696	#endif
		697
		698	/*
		699	* This overrides the default magic get method of %SIG elements.
		700	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		701	* and instead of tryign to save and restore the hash elements, we just provide
		702	* readback here.
		703	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		704	* not expecting this to actually change the hook. This is a potential problem
		705	* when a schedule happens then, but we ignore this.
		706	*/
		707	static int
		708	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		709	{
		710	const char *s = MgPV_nolen_const (mg);
		711
		712	if (*s == '_')
		713	{
		714	SV **svp = 0;
		715
		716	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		717	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		718
		719	if (svp)
		720	{
		721	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		722	return 0;
		723	}
		724	}
		725
		726	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		727	}
		728
		729	static int
		730	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		731	{
		732	const char *s = MgPV_nolen_const (mg);
		733
		734	if (*s == '_')
		735	{
		736	SV **svp = 0;
		737
		738	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		739	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		740
		741	if (svp)
		742	{
		743	SV *old = *svp;
		744	*svp = 0;
		745	SvREFCNT_dec (old);
		746	return 0;
		747	}
		748	}
		749
		750	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		751	}
		752
		753	static int
		754	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		755	{
		756	const char *s = MgPV_nolen_const (mg);
		757
		758	if (*s == '_')
		759	{
		760	SV **svp = 0;
		761
		762	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		763	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		764
		765	if (svp)
		766	{
		767	SV *old = *svp;
		768	*svp = newSVsv (sv);
		769	SvREFCNT_dec (old);
		770	return 0;
		771	}
		772	}
		773
		774	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		775	}
591		776
592	static void	777	static void
593	coro_setup (pTHX_ struct coro *coro)	778	coro_setup (pTHX_ struct coro *coro)
594	{	779	{
595	/*	780	/*
…		…
600	PL_runops = RUNOPS_DEFAULT;	785	PL_runops = RUNOPS_DEFAULT;
601	PL_curcop = &PL_compiling;	786	PL_curcop = &PL_compiling;
602	PL_in_eval = EVAL_NULL;	787	PL_in_eval = EVAL_NULL;
603	PL_comppad = 0;	788	PL_comppad = 0;
604	PL_curpm = 0;	789	PL_curpm = 0;
		790	PL_curpad = 0;
605	PL_localizing = 0;	791	PL_localizing = 0;
606	PL_dirty = 0;	792	PL_dirty = 0;
607	PL_restartop = 0;	793	PL_restartop = 0;
		794	#if PERL_VERSION_ATLEAST (5,10,0)
		795	PL_parser = 0;
		796	#endif
		797
		798	/* recreate the die/warn hooks */
		799	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		800	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
608		801
609	GvSV (PL_defgv) = NEWSV (0, 0);	802	GvSV (PL_defgv) = newSV (0);
610	GvAV (PL_defgv) = coro->args; coro->args = 0;	803	GvAV (PL_defgv) = coro->args; coro->args = 0;
611	GvSV (PL_errgv) = NEWSV (0, 0);	804	GvSV (PL_errgv) = newSV (0);
612	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	805	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
613	PL_rs = newSVsv (GvSV (irsgv));	806	PL_rs = newSVsv (GvSV (irsgv));
614	PL_defoutgv = SvREFCNT_inc (stdoutgv);	807	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
615		808
616	{	809	{
617	dSP;	810	dSP;
618	LOGOP myop;	811	LOGOP myop;
619		812
620	Zero (&myop, 1, LOGOP);	813	Zero (&myop, 1, LOGOP);
621	myop.op_next = Nullop;	814	myop.op_next = Nullop;
622	myop.op_flags = OPf_WANT_VOID;	815	myop.op_flags = OPf_WANT_VOID;
623		816
624	PUSHMARK (SP);	817	PUSHMARK (SP);
625	XPUSHs (av_shift (GvAV (PL_defgv)));	818	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
626	PUTBACK;	819	PUTBACK;
627	PL_op = (OP *)&myop;	820	PL_op = (OP *)&myop;
628	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	821	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
629	SPAGAIN;	822	SPAGAIN;
630	}	823	}
631		824
632	ENTER; /* necessary e.g. for dounwind */	825	/* this newly created coroutine might be run on an existing cctx which most
		826	* likely was suspended in set_stacklevel, called from entersub.
		827	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		828	* so we ENTER here for symmetry
		829	*/
		830	ENTER;
633	}	831	}
634		832
635	static void	833	static void
636	coro_destroy (pTHX_ struct coro *coro)	834	coro_destroy (pTHX_ struct coro *coro)
637	{	835	{
…		…
657	SvREFCNT_dec (GvSV (PL_errgv));	855	SvREFCNT_dec (GvSV (PL_errgv));
658	SvREFCNT_dec (PL_defoutgv);	856	SvREFCNT_dec (PL_defoutgv);
659	SvREFCNT_dec (PL_rs);	857	SvREFCNT_dec (PL_rs);
660	SvREFCNT_dec (GvSV (irsgv));	858	SvREFCNT_dec (GvSV (irsgv));
661		859
		860	SvREFCNT_dec (PL_diehook);
		861	SvREFCNT_dec (PL_warnhook);
		862
662	SvREFCNT_dec (coro->saved_deffh);	863	SvREFCNT_dec (coro->saved_deffh);
663	//SvREFCNT_dec (coro->throw);	864	SvREFCNT_dec (coro->throw);
664		865
665	coro_destroy_stacks (aTHX);	866	coro_destroy_stacks (aTHX);
666	}	867	}
667		868
668	static void	869	static void
669	free_coro_mortal (pTHX)	870	free_coro_mortal (pTHX)
670	{	871	{
671	if (coro_mortal)	872	if (expect_true (coro_mortal))
672	{	873	{
673	SvREFCNT_dec (coro_mortal);	874	SvREFCNT_dec (coro_mortal);
674	coro_mortal = 0;	875	coro_mortal = 0;
675	}	876	}
676	}	877	}
…		…
705	bot = PL_stack_base + cx->blk_oldsp + 1;	906	bot = PL_stack_base + cx->blk_oldsp + 1;
706	top = cx->blk_gimme == G_ARRAY ? SP + 1	907	top = cx->blk_gimme == G_ARRAY ? SP + 1
707	: cx->blk_gimme == G_SCALAR ? bot + 1	908	: cx->blk_gimme == G_SCALAR ? bot + 1
708	: bot;	909	: bot;
709		910
		911	av_extend (av, top - bot);
710	while (bot < top)	912	while (bot < top)
711	av_push (av, SvREFCNT_inc (*bot++));	913	av_push (av, SvREFCNT_inc (*bot++));
712		914
713	PL_runops = RUNOPS_DEFAULT;	915	PL_runops = RUNOPS_DEFAULT;
714	ENTER;	916	ENTER;
…		…
754	SAVETMPS;	956	SAVETMPS;
755	EXTEND (SP, 3);	957	EXTEND (SP, 3);
756	PUSHMARK (SP);	958	PUSHMARK (SP);
757	PUSHs (&PL_sv_yes);	959	PUSHs (&PL_sv_yes);
758	PUSHs (fullname);	960	PUSHs (fullname);
759	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	961	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
760	PUTBACK;	962	PUTBACK;
761	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	963	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
762	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	964	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
763	SPAGAIN;	965	SPAGAIN;
764	FREETMPS;	966	FREETMPS;
…		…
800		1002
801	/* inject a fake call to Coro::State::_cctx_init into the execution */	1003	/* inject a fake call to Coro::State::_cctx_init into the execution */
802	/* _cctx_init should be careful, as it could be called at almost any time */	1004	/* _cctx_init should be careful, as it could be called at almost any time */
803	/* during execution of a perl program */	1005	/* during execution of a perl program */
804	static void NOINLINE	1006	static void NOINLINE
805	prepare_cctx (pTHX_ coro_cctx *cctx)	1007	cctx_prepare (pTHX_ coro_cctx *cctx)
806	{	1008	{
807	dSP;	1009	dSP;
808	LOGOP myop;	1010	LOGOP myop;
809		1011
810	PL_top_env = &PL_start_env;	1012	PL_top_env = &PL_start_env;
…		…
828		1030
829	/*	1031	/*
830	* this is a _very_ stripped down perl interpreter ;)	1032	* this is a _very_ stripped down perl interpreter ;)
831	*/	1033	*/
832	static void	1034	static void
833	coro_run (void *arg)	1035	cctx_run (void *arg)
834	{	1036	{
835	dTHX;	1037	dTHX;
836		1038
837	/* coro_run is the alternative tail of transfer(), so unlock here. */	1039	/* cctx_run is the alternative tail of transfer(), so unlock here. */
838	UNLOCK;	1040	UNLOCK;
839		1041
840	/* we now skip the entersub that lead to transfer() */	1042	/* we now skip the entersub that lead to transfer() */
841	PL_op = PL_op->op_next;	1043	PL_op = PL_op->op_next;
842		1044
843	/* inject a fake subroutine call to cctx_init */	1045	/* inject a fake subroutine call to cctx_init */
844	prepare_cctx (aTHX_ (coro_cctx *)arg);	1046	cctx_prepare (aTHX_ (coro_cctx *)arg);
845		1047
846	/* somebody or something will hit me for both perl_run and PL_restartop */	1048	/* somebody or something will hit me for both perl_run and PL_restartop */
847	PL_restartop = PL_op;	1049	PL_restartop = PL_op;
848	perl_run (PL_curinterp);	1050	perl_run (PL_curinterp);
849		1051
…		…
868	++cctx_count;	1070	++cctx_count;
869		1071
870	Newz (0, cctx, 1, coro_cctx);	1072	Newz (0, cctx, 1, coro_cctx);
871		1073
872	#if HAVE_MMAP	1074	#if HAVE_MMAP
873
874	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1075	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
875	/* mmap supposedly does allocate-on-write for us */	1076	/* mmap supposedly does allocate-on-write for us */
876	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1077	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
877		1078
878	if (cctx->sptr != (void *)-1)	1079	if (cctx->sptr != (void *)-1)
…		…
899	stack_start = cctx->sptr;	1100	stack_start = cctx->sptr;
900	stack_size = cctx->ssize;	1101	stack_size = cctx->ssize;
901	}	1102	}
902		1103
903	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1104	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
904	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1105	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
905		1106
906	return cctx;	1107	return cctx;
907	}	1108	}
908		1109
909	static void	1110	static void
…		…
926	Safefree (cctx->sptr);	1127	Safefree (cctx->sptr);
927		1128
928	Safefree (cctx);	1129	Safefree (cctx);
929	}	1130	}
930		1131
		1132	/* wether this cctx should be destructed */
		1133	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1134
931	static coro_cctx *	1135	static coro_cctx *
932	cctx_get (pTHX)	1136	cctx_get (pTHX)
933	{	1137	{
934	while (cctx_first)	1138	while (expect_true (cctx_first))
935	{	1139	{
936	coro_cctx *cctx = cctx_first;	1140	coro_cctx *cctx = cctx_first;
937	cctx_first = cctx->next;	1141	cctx_first = cctx->next;
938	--cctx_idle;	1142	--cctx_idle;
939		1143
940	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1144	if (expect_true (!CCTX_EXPIRED (cctx)))
941	return cctx;	1145	return cctx;
942		1146
943	cctx_destroy (cctx);	1147	cctx_destroy (cctx);
944	}	1148	}
945		1149
…		…
948		1152
949	static void	1153	static void
950	cctx_put (coro_cctx *cctx)	1154	cctx_put (coro_cctx *cctx)
951	{	1155	{
952	/* free another cctx if overlimit */	1156	/* free another cctx if overlimit */
953	if (cctx_idle >= MAX_IDLE_CCTX)	1157	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
954	{	1158	{
955	coro_cctx *first = cctx_first;	1159	coro_cctx *first = cctx_first;
956	cctx_first = first->next;	1160	cctx_first = first->next;
957	--cctx_idle;	1161	--cctx_idle;
958		1162
…		…
964	cctx_first = cctx;	1168	cctx_first = cctx;
965	}	1169	}
966		1170
967	/** coroutine switching *****************************************************/	1171	/** coroutine switching *****************************************************/
968		1172
969	static void NOINLINE	1173	static void
970	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1174	transfer_check (pTHX_ struct coro *prev, struct coro *next)
971	{	1175	{
972	if (prev != next)	1176	if (expect_true (prev != next))
973	{	1177	{
974	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1178	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
975	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1179	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
976		1180
977	if (next->flags & CF_RUNNING)	1181	if (expect_false (next->flags & CF_RUNNING))
978	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1182	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
979		1183
980	if (next->flags & CF_DESTROYED)	1184	if (expect_false (next->flags & CF_DESTROYED))
981	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1185	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
982		1186
		1187	#if !PERL_VERSION_ATLEAST (5,10,0)
983	if (PL_lex_state != LEX_NOTPARSING)	1188	if (expect_false (PL_lex_state != LEX_NOTPARSING))
984	croak ("Coro::State::transfer called while parsing, but this is not supported");	1189	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1190	#endif
985	}	1191	}
986	}	1192	}
987		1193
988	/* always use the TRANSFER macro */	1194	/* always use the TRANSFER macro */
989	static void NOINLINE	1195	static void NOINLINE
990	transfer (pTHX_ struct coro *prev, struct coro *next)	1196	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
991	{	1197	{
992	dSTACKLEVEL;	1198	dSTACKLEVEL;
		1199	static volatile int has_throw;
993		1200
994	/* sometimes transfer is only called to set idle_sp */	1201	/* sometimes transfer is only called to set idle_sp */
995	if (!next)	1202	if (expect_false (!next))
996	{	1203	{
997	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1204	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
998	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1205	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
999	}	1206	}
1000	else if (prev != next)	1207	else if (expect_true (prev != next))
1001	{	1208	{
1002	coro_cctx *prev__cctx;	1209	coro_cctx *prev__cctx;
1003		1210
1004	if (prev->flags & CF_NEW)	1211	if (expect_false (prev->flags & CF_NEW))
1005	{	1212	{
1006	/* create a new empty context */	1213	/* create a new empty context */
1007	Newz (0, prev->cctx, 1, coro_cctx);	1214	Newz (0, prev->cctx, 1, coro_cctx);
1008	prev->flags &= ~CF_NEW;	1215	prev->flags &= ~CF_NEW;
1009	prev->flags |= CF_RUNNING;	1216	prev->flags |= CF_RUNNING;
…		…
1012	prev->flags &= ~CF_RUNNING;	1219	prev->flags &= ~CF_RUNNING;
1013	next->flags |= CF_RUNNING;	1220	next->flags |= CF_RUNNING;
1014		1221
1015	LOCK;	1222	LOCK;
1016		1223
		1224	/* first get rid of the old state */
		1225	save_perl (aTHX_ prev);
		1226
1017	if (next->flags & CF_NEW)	1227	if (expect_false (next->flags & CF_NEW))
1018	{	1228	{
1019	/* need to start coroutine */	1229	/* need to start coroutine */
1020	next->flags &= ~CF_NEW;	1230	next->flags &= ~CF_NEW;
1021	/* first get rid of the old state */
1022	save_perl (aTHX_ prev);
1023	/* setup coroutine call */	1231	/* setup coroutine call */
1024	coro_setup (aTHX_ next);	1232	coro_setup (aTHX_ next);
1025	}	1233	}
1026	else	1234	else
1027	{
1028	/* coroutine already started */
1029	save_perl (aTHX_ prev);
1030	load_perl (aTHX_ next);	1235	load_perl (aTHX_ next);
1031	}
1032		1236
1033	prev__cctx = prev->cctx;	1237	prev__cctx = prev->cctx;
1034		1238
1035	/* possibly "free" the cctx */	1239	/* possibly "free" the cctx */
1036	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1240	if (expect_true (
		1241	prev__cctx->idle_sp == STACKLEVEL
		1242	&& !(prev__cctx->flags & CC_TRACE)
		1243	&& !force_cctx
		1244	))
1037	{	1245	{
1038	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1246	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1039	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1247	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1040		1248
1041	prev->cctx = 0;	1249	prev->cctx = 0;
1042		1250
		1251	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1252	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1253	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1254	if (!next->cctx)
		1255	next->cctx = cctx_get (aTHX);
		1256
1043	cctx_put (prev__cctx);	1257	cctx_put (prev__cctx);
1044	}	1258	}
1045		1259
1046	++next->usecount;	1260	++next->usecount;
1047		1261
1048	if (!next->cctx)	1262	if (expect_true (!next->cctx))
1049	next->cctx = cctx_get (aTHX);	1263	next->cctx = cctx_get (aTHX);
1050		1264
		1265	has_throw = !!next->throw;
		1266
1051	if (prev__cctx != next->cctx)	1267	if (expect_false (prev__cctx != next->cctx))
1052	{	1268	{
1053	prev__cctx->top_env = PL_top_env;	1269	prev__cctx->top_env = PL_top_env;
1054	PL_top_env = next->cctx->top_env;	1270	PL_top_env = next->cctx->top_env;
1055	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1271	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1056	}	1272	}
1057		1273
1058	free_coro_mortal (aTHX);	1274	free_coro_mortal (aTHX);
1059	UNLOCK;	1275	UNLOCK;
		1276
		1277	if (expect_false (has_throw))
		1278	{
		1279	struct coro *coro = SvSTATE (coro_current);
		1280
		1281	if (coro->throw)
		1282	{
		1283	SV *exception = coro->throw;
		1284	coro->throw = 0;
		1285	sv_setsv (ERRSV, exception);
		1286	croak (0);
		1287	}
		1288	}
1060	}	1289	}
1061	}	1290	}
1062		1291
1063	struct transfer_args	1292	struct transfer_args
1064	{	1293	{
1065	struct coro *prev, *next;	1294	struct coro *prev, *next;
1066	};	1295	};
1067		1296
1068	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1297	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1069	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1298	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1070		1299
1071	/** high level stuff ********************************************************/	1300	/** high level stuff ********************************************************/
1072		1301
1073	static int	1302	static int
…		…
1099	save_perl (aTHX_ &temp);	1328	save_perl (aTHX_ &temp);
1100	load_perl (aTHX_ coro);	1329	load_perl (aTHX_ coro);
1101		1330
1102	coro_destroy (aTHX_ coro);	1331	coro_destroy (aTHX_ coro);
1103		1332
1104	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1333	load_perl (aTHX_ &temp);
1105		1334
1106	coro->mainstack = 0;	1335	coro->slot = 0;
1107	}	1336	}
1108		1337
1109	cctx_destroy (coro->cctx);	1338	cctx_destroy (coro->cctx);
1110	SvREFCNT_dec (coro->args);	1339	SvREFCNT_dec (coro->args);
1111		1340
…		…
1167	{	1396	{
1168	dTHX;	1397	dTHX;
1169	struct transfer_args ta;	1398	struct transfer_args ta;
1170		1399
1171	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1400	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1172	TRANSFER (ta);	1401	TRANSFER (ta, 1);
1173	}	1402	}
1174		1403
1175	/** Coro ********************************************************************/	1404	/** Coro ********************************************************************/
1176		1405
1177	static void	1406	static void
…		…
1179	{	1408	{
1180	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1409	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1181	}	1410	}
1182		1411
1183	static SV *	1412	static SV *
1184	coro_deq (pTHX_ int min_prio)	1413	coro_deq (pTHX)
1185	{	1414	{
1186	int prio = PRIO_MAX - PRIO_MIN;	1415	int prio;
1187		1416
1188	min_prio -= PRIO_MIN;
1189	if (min_prio < 0)
1190	min_prio = 0;
1191
1192	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1417	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1193	if (AvFILLp (coro_ready [prio]) >= 0)	1418	if (AvFILLp (coro_ready [prio]) >= 0)
1194	return av_shift (coro_ready [prio]);	1419	return av_shift (coro_ready [prio]);
1195		1420
1196	return 0;	1421	return 0;
1197	}	1422	}
…		…
1199	static int	1424	static int
1200	api_ready (SV *coro_sv)	1425	api_ready (SV *coro_sv)
1201	{	1426	{
1202	dTHX;	1427	dTHX;
1203	struct coro *coro;	1428	struct coro *coro;
		1429	SV *sv_hook;
		1430	void (*xs_hook)(void);
1204		1431
1205	if (SvROK (coro_sv))	1432	if (SvROK (coro_sv))
1206	coro_sv = SvRV (coro_sv);	1433	coro_sv = SvRV (coro_sv);
1207		1434
1208	coro = SvSTATE (coro_sv);	1435	coro = SvSTATE (coro_sv);
…		…
1211	return 0;	1438	return 0;
1212		1439
1213	coro->flags |= CF_READY;	1440	coro->flags |= CF_READY;
1214		1441
1215	LOCK;	1442	LOCK;
		1443
		1444	sv_hook = coro_nready ? 0 : coro_readyhook;
		1445	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1446
1216	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1447	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1217	++coro_nready;	1448	++coro_nready;
		1449
1218	UNLOCK;	1450	UNLOCK;
		1451
		1452	if (sv_hook)
		1453	{
		1454	dSP;
		1455
		1456	ENTER;
		1457	SAVETMPS;
		1458
		1459	PUSHMARK (SP);
		1460	PUTBACK;
		1461	call_sv (sv_hook, G_DISCARD);
		1462	SPAGAIN;
		1463
		1464	FREETMPS;
		1465	LEAVE;
		1466	}
		1467
		1468	if (xs_hook)
		1469	xs_hook ();
1219		1470
1220	return 1;	1471	return 1;
1221	}	1472	}
1222		1473
1223	static int	1474	static int
…		…
1233	SV *prev_sv, *next_sv;	1484	SV *prev_sv, *next_sv;
1234		1485
1235	for (;;)	1486	for (;;)
1236	{	1487	{
1237	LOCK;	1488	LOCK;
1238	next_sv = coro_deq (aTHX_ PRIO_MIN);	1489	next_sv = coro_deq (aTHX);
1239		1490
1240	/* nothing to schedule: call the idle handler */	1491	/* nothing to schedule: call the idle handler */
1241	if (!next_sv)	1492	if (expect_false (!next_sv))
1242	{	1493	{
1243	dSP;	1494	dSP;
1244	UNLOCK;	1495	UNLOCK;
1245		1496
1246	ENTER;	1497	ENTER;
1247	SAVETMPS;	1498	SAVETMPS;
1248		1499
1249	PUSHMARK (SP);	1500	PUSHMARK (SP);
1250	PUTBACK;	1501	PUTBACK;
1251	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1502	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1503	SPAGAIN;
1252		1504
1253	FREETMPS;	1505	FREETMPS;
1254	LEAVE;	1506	LEAVE;
1255	continue;	1507	continue;
1256	}	1508	}
1257		1509
1258	ta->next = SvSTATE (next_sv);	1510	ta->next = SvSTATE (next_sv);
1259		1511
1260	/* cannot transfer to destroyed coros, skip and look for next */	1512	/* cannot transfer to destroyed coros, skip and look for next */
1261	if (ta->next->flags & CF_DESTROYED)	1513	if (expect_false (ta->next->flags & CF_DESTROYED))
1262	{	1514	{
1263	UNLOCK;	1515	UNLOCK;
1264	SvREFCNT_dec (next_sv);	1516	SvREFCNT_dec (next_sv);
1265	/* coro_nready is already taken care of by destroy */	1517	/* coro_nready is already taken care of by destroy */
1266	continue;	1518	continue;
…		…
1311	{	1563	{
1312	dTHX;	1564	dTHX;
1313	struct transfer_args ta;	1565	struct transfer_args ta;
1314		1566
1315	prepare_schedule (aTHX_ &ta);	1567	prepare_schedule (aTHX_ &ta);
1316	TRANSFER (ta);	1568	TRANSFER (ta, 1);
1317	}	1569	}
1318		1570
1319	static int	1571	static int
1320	api_cede (void)	1572	api_cede (void)
1321	{	1573	{
1322	dTHX;	1574	dTHX;
1323	struct transfer_args ta;	1575	struct transfer_args ta;
1324		1576
1325	prepare_cede (aTHX_ &ta);	1577	prepare_cede (aTHX_ &ta);
1326		1578
1327	if (ta.prev != ta.next)	1579	if (expect_true (ta.prev != ta.next))
1328	{	1580	{
1329	TRANSFER (ta);	1581	TRANSFER (ta, 1);
1330	return 1;	1582	return 1;
1331	}	1583	}
1332	else	1584	else
1333	return 0;	1585	return 0;
1334	}	1586	}
…		…
1339	dTHX;	1591	dTHX;
1340	struct transfer_args ta;	1592	struct transfer_args ta;
1341		1593
1342	if (prepare_cede_notself (aTHX_ &ta))	1594	if (prepare_cede_notself (aTHX_ &ta))
1343	{	1595	{
1344	TRANSFER (ta);	1596	TRANSFER (ta, 1);
1345	return 1;	1597	return 1;
1346	}	1598	}
1347	else	1599	else
1348	return 0;	1600	return 0;
1349	}	1601	}
…		…
1368	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1620	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1369		1621
1370	if (coro->flags & CF_RUNNING)	1622	if (coro->flags & CF_RUNNING)
1371	PL_runops = RUNOPS_DEFAULT;	1623	PL_runops = RUNOPS_DEFAULT;
1372	else	1624	else
1373	coro->runops = RUNOPS_DEFAULT;	1625	coro->slot->runops = RUNOPS_DEFAULT;
1374	}	1626	}
1375	}	1627	}
1376		1628
1377	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1629	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1378		1630
…		…
1385	#endif	1637	#endif
1386	BOOT_PAGESIZE;	1638	BOOT_PAGESIZE;
1387		1639
1388	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1640	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1389	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1641	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1642
		1643	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1644	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1645	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1646
		1647	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1648	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1649	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1390		1650
1391	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1651	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1392		1652
1393	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1653	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1394	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1654	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1399	main_top_env = PL_top_env;	1659	main_top_env = PL_top_env;
1400		1660
1401	while (main_top_env->je_prev)	1661	while (main_top_env->je_prev)
1402	main_top_env = main_top_env->je_prev;	1662	main_top_env = main_top_env->je_prev;
1403		1663
1404	coroapi.ver = CORO_API_VERSION;	1664	coroapi.ver = CORO_API_VERSION;
		1665	coroapi.rev = CORO_API_REVISION;
1405	coroapi.transfer = api_transfer;	1666	coroapi.transfer = api_transfer;
1406		1667
1407	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1668	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1408	}	1669	}
1409		1670
1410	SV *	1671	SV *
1411	new (char *klass, ...)	1672	new (char *klass, ...)
1412	CODE:	1673	CODE:
1413	{	1674	{
1414	struct coro *coro;	1675	struct coro *coro;
		1676	MAGIC *mg;
1415	HV *hv;	1677	HV *hv;
1416	int i;	1678	int i;
1417		1679
1418	Newz (0, coro, 1, struct coro);	1680	Newz (0, coro, 1, struct coro);
1419	coro->args = newAV ();	1681	coro->args = newAV ();
…		…
1422	if (coro_first) coro_first->prev = coro;	1684	if (coro_first) coro_first->prev = coro;
1423	coro->next = coro_first;	1685	coro->next = coro_first;
1424	coro_first = coro;	1686	coro_first = coro;
1425		1687
1426	coro->hv = hv = newHV ();	1688	coro->hv = hv = newHV ();
1427	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1689	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1690	mg->mg_flags |= MGf_DUP;
1428	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1691	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1429		1692
		1693	av_extend (coro->args, items - 1);
1430	for (i = 1; i < items; i++)	1694	for (i = 1; i < items; i++)
1431	av_push (coro->args, newSVsv (ST (i)));	1695	av_push (coro->args, newSVsv (ST (i)));
1432	}	1696	}
1433	OUTPUT:	1697	OUTPUT:
1434	RETVAL	1698	RETVAL
…		…
1445	Coro::cede_notself = 4	1709	Coro::cede_notself = 4
1446	CODE:	1710	CODE:
1447	{	1711	{
1448	struct transfer_args ta;	1712	struct transfer_args ta;
1449		1713
		1714	PUTBACK;
1450	switch (ix)	1715	switch (ix)
1451	{	1716	{
1452	case 0:	1717	case 0:
1453	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1718	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1454	ta.next = 0;	1719	ta.next = 0;
…		…
1473	if (!prepare_cede_notself (aTHX_ &ta))	1738	if (!prepare_cede_notself (aTHX_ &ta))
1474	XSRETURN_EMPTY;	1739	XSRETURN_EMPTY;
1475		1740
1476	break;	1741	break;
1477	}	1742	}
		1743	SPAGAIN;
1478		1744
1479	BARRIER;	1745	BARRIER;
		1746	PUTBACK;
1480	TRANSFER (ta);	1747	TRANSFER (ta, 0);
1481		1748	SPAGAIN; /* might be the sp of a different coroutine now */
1482	if (GIMME_V != G_VOID && ta.next != ta.prev)	1749	/* be extra careful not to ever do anything after TRANSFER */
1483	XSRETURN_YES;
1484	}	1750	}
1485		1751
1486	bool	1752	bool
1487	_destroy (SV *coro_sv)	1753	_destroy (SV *coro_sv)
1488	CODE:	1754	CODE:
1489	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1755	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1490	OUTPUT:	1756	OUTPUT:
1491	RETVAL	1757	RETVAL
1492		1758
1493	void	1759	void
1494	_exit (code)	1760	_exit (int code)
1495	int code
1496	PROTOTYPE: $	1761	PROTOTYPE: $
1497	CODE:	1762	CODE:
1498	_exit (code);	1763	_exit (code);
1499		1764
1500	int	1765	int
…		…
1537	CODE:	1802	CODE:
1538	{	1803	{
1539	if (coro->mainstack)	1804	if (coro->mainstack)
1540	{	1805	{
1541	struct coro temp;	1806	struct coro temp;
1542	Zero (&temp, 1, struct coro);
1543		1807
1544	if (!(coro->flags & CF_RUNNING))	1808	if (!(coro->flags & CF_RUNNING))
1545	{	1809	{
		1810	PUTBACK;
1546	save_perl (aTHX_ &temp);	1811	save_perl (aTHX_ &temp);
1547	load_perl (aTHX_ coro);	1812	load_perl (aTHX_ coro);
1548	}	1813	}
1549		1814
1550	{	1815	{
1551	dSP;	1816	dSP;
1552	ENTER;	1817	ENTER;
1553	SAVETMPS;	1818	SAVETMPS;
		1819	PUTBACK;
		1820	PUSHSTACK;
1554	PUSHMARK (SP);	1821	PUSHMARK (SP);
1555	PUTBACK;	1822
1556	if (ix)	1823	if (ix)
1557	eval_sv (coderef, 0);	1824	eval_sv (coderef, 0);
1558	else	1825	else
1559	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1826	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1827
		1828	POPSTACK;
1560	SPAGAIN;	1829	SPAGAIN;
1561	FREETMPS;	1830	FREETMPS;
1562	LEAVE;	1831	LEAVE;
1563	PUTBACK;	1832	PUTBACK;
1564	}	1833	}
1565		1834
1566	if (!(coro->flags & CF_RUNNING))	1835	if (!(coro->flags & CF_RUNNING))
1567	{	1836	{
1568	save_perl (aTHX_ coro);	1837	save_perl (aTHX_ coro);
1569	load_perl (aTHX_ &temp);	1838	load_perl (aTHX_ &temp);
		1839	SPAGAIN;
1570	}	1840	}
1571	}	1841	}
1572	}	1842	}
1573		1843
1574	SV *	1844	SV *
…		…
1586		1856
1587	void	1857	void
1588	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1858	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1589		1859
1590	SV *	1860	SV *
1591	has_stack (Coro::State coro)	1861	has_cctx (Coro::State coro)
1592	PROTOTYPE: $	1862	PROTOTYPE: $
1593	CODE:	1863	CODE:
1594	RETVAL = boolSV (!!coro->cctx);	1864	RETVAL = boolSV (!!coro->cctx);
1595	OUTPUT:	1865	OUTPUT:
1596	RETVAL	1866	RETVAL
…		…
1615	case 1: RETVAL = coro->usecount; break;	1885	case 1: RETVAL = coro->usecount; break;
1616	}	1886	}
1617	OUTPUT:	1887	OUTPUT:
1618	RETVAL	1888	RETVAL
1619		1889
		1890	void
		1891	force_cctx ()
		1892	CODE:
		1893	struct coro *coro = SvSTATE (coro_current);
		1894	coro->cctx->idle_sp = 0;
1620		1895
1621	MODULE = Coro::State PACKAGE = Coro	1896	MODULE = Coro::State PACKAGE = Coro
1622		1897
1623	BOOT:	1898	BOOT:
1624	{	1899	{
1625	int i;	1900	int i;
1626		1901
1627	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1628	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1629	av_async_pool = get_av ("Coro::async_pool", TRUE);	1902	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1903	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1904	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1630		1905
1631	coro_current = get_sv ("Coro::current", FALSE);	1906	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1632	SvREADONLY_on (coro_current);	1907	SvREADONLY_on (coro_current);
1633		1908
1634	coro_stash = gv_stashpv ("Coro", TRUE);	1909	coro_stash = gv_stashpv ("Coro", TRUE);
1635		1910
1636	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1911	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1637	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1912	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1638	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1913	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1639	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1914	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1642		1917
1643	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1918	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1644	coro_ready[i] = newAV ();	1919	coro_ready[i] = newAV ();
1645		1920
1646	{	1921	{
1647	SV *sv = perl_get_sv("Coro::API", 1);	1922	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1923	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1648		1924
1649	coroapi.schedule = api_schedule;	1925	coroapi.schedule = api_schedule;
1650	coroapi.cede = api_cede;	1926	coroapi.cede = api_cede;
1651	coroapi.cede_notself = api_cede_notself;	1927	coroapi.cede_notself = api_cede_notself;
1652	coroapi.ready = api_ready;	1928	coroapi.ready = api_ready;
…		…
1665	PROTOTYPE: $	1941	PROTOTYPE: $
1666	CODE:	1942	CODE:
1667	SvREFCNT_dec (SvRV (coro_current));	1943	SvREFCNT_dec (SvRV (coro_current));
1668	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1944	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1669		1945
		1946	void
		1947	_set_readyhook (SV *hook)
		1948	PROTOTYPE: $
		1949	CODE:
		1950	LOCK;
		1951	SvREFCNT_dec (coro_readyhook);
		1952	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1953	UNLOCK;
		1954
1670	int	1955	int
1671	prio (Coro::State coro, int newprio = 0)	1956	prio (Coro::State coro, int newprio = 0)
1672	ALIAS:	1957	ALIAS:
1673	nice = 1	1958	nice = 1
1674	CODE:	1959	CODE:
…		…
1703	CODE:	1988	CODE:
1704	RETVAL = coro_nready;	1989	RETVAL = coro_nready;
1705	OUTPUT:	1990	OUTPUT:
1706	RETVAL	1991	RETVAL
1707		1992
		1993	void
		1994	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1995	PROTOTYPE: $;$
		1996	CODE:
		1997	SvREFCNT_dec (self->throw);
		1998	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1999
		2000	void
		2001	swap_defsv (Coro::State self)
		2002	PROTOTYPE: $
		2003	ALIAS:
		2004	swap_defav = 1
		2005	CODE:
		2006	if (!self->slot)
		2007	croak ("cannot swap state with coroutine that has no saved state");
		2008	else
		2009	{
		2010	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2011	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2012
		2013	SV *tmp = *src; *src = *dst; *dst = tmp;
		2014	}
		2015
1708	# for async_pool speedup	2016	# for async_pool speedup
1709	void	2017	void
1710	_pool_1 (SV *cb)	2018	_pool_1 (SV *cb)
1711	CODE:	2019	CODE:
1712	{	2020	{
…		…
1716	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2024	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1717	AV *invoke_av;	2025	AV *invoke_av;
1718	int i, len;	2026	int i, len;
1719		2027
1720	if (!invoke)	2028	if (!invoke)
		2029	{
		2030	SV *old = PL_diehook;
		2031	PL_diehook = 0;
		2032	SvREFCNT_dec (old);
1721	croak ("\3terminate\2\n");	2033	croak ("\3async_pool terminate\2\n");
		2034	}
1722		2035
1723	SvREFCNT_dec (coro->saved_deffh);	2036	SvREFCNT_dec (coro->saved_deffh);
1724	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2037	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1725		2038
1726	hv_store (hv, "desc", sizeof ("desc") - 1,	2039	hv_store (hv, "desc", sizeof ("desc") - 1,
…		…
1752	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2065	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1753	coro->saved_deffh = 0;	2066	coro->saved_deffh = 0;
1754		2067
1755	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2068	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1756	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2069	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2070	{
		2071	SV *old = PL_diehook;
		2072	PL_diehook = 0;
		2073	SvREFCNT_dec (old);
1757	croak ("\3terminate\2\n");	2074	croak ("\3async_pool terminate\2\n");
		2075	}
1758		2076
1759	av_clear (GvAV (PL_defgv));	2077	av_clear (GvAV (PL_defgv));
1760	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2078	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1761	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2079	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1762		2080
…		…
1801	PL_laststype = data->laststype;	2119	PL_laststype = data->laststype;
1802	PL_laststatval = data->laststatval;	2120	PL_laststatval = data->laststatval;
1803	PL_statcache = data->statcache;	2121	PL_statcache = data->statcache;
1804	}	2122	}
1805		2123
		2124
		2125	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2126
		2127	BOOT:
		2128	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2129
		2130	SV *
		2131	_schedule (...)
		2132	PROTOTYPE: @
		2133	CODE:
		2134	{
		2135	static int incede;
		2136
		2137	api_cede_notself ();
		2138
		2139	++incede;
		2140	while (coro_nready >= incede && api_cede ())
		2141	;
		2142
		2143	sv_setsv (sv_activity, &PL_sv_undef);
		2144	if (coro_nready >= incede)
		2145	{
		2146	PUSHMARK (SP);
		2147	PUTBACK;
		2148	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2149	SPAGAIN;
		2150	}
		2151
		2152	--incede;
		2153	}
		2154

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