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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 1.244 by root, Sun Sep 21 18:29:39 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)];
…		…
302	SvREFCNT_dec (av);	366	SvREFCNT_dec (av);
303		367
304	return 0;	368	return 0;
305	}	369	}
306		370
307	#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
308		373
309	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	};
310		378
311	#define CORO_MAGIC(cv) \	379	#define CORO_MAGIC(sv,type) \
312	SvMAGIC (cv) \	380	SvMAGIC (sv) \
313	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	381	? SvMAGIC (sv)->mg_type == type \
314	? SvMAGIC (cv) \	382	? SvMAGIC (sv) \
315	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	383	: mg_find (sv, type) \
316	: 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)
317		388
318	static struct coro *	389	static struct coro *
319	SvSTATE_ (pTHX_ SV *coro)	390	SvSTATE_ (pTHX_ SV *coro)
320	{	391	{
321	HV *stash;	392	HV *stash;
322	MAGIC *mg;	393	MAGIC *mg;
323		394
324	if (SvROK (coro))	395	if (SvROK (coro))
325	coro = SvRV (coro);	396	coro = SvRV (coro);
326		397
327	if (SvTYPE (coro) != SVt_PVHV)	398	if (expect_false (SvTYPE (coro) != SVt_PVHV))
328	croak ("Coro::State object required");	399	croak ("Coro::State object required");
329		400
330	stash = SvSTASH (coro);	401	stash = SvSTASH (coro);
331	if (stash != coro_stash && stash != coro_state_stash)	402	if (expect_false (stash != coro_stash && stash != coro_state_stash))
332	{	403	{
333	/* very slow, but rare, check */	404	/* very slow, but rare, check */
334	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	405	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
335	croak ("Coro::State object required");	406	croak ("Coro::State object required");
336	}	407	}
337		408
338	mg = CORO_MAGIC (coro);	409	mg = CORO_MAGIC_state (coro);
339	return (struct coro *)mg->mg_ptr;	410	return (struct coro *)mg->mg_ptr;
340	}	411	}
341		412
342	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	413	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
343		414
344	/* the next two functions merely cache the padlists */	415	/* the next two functions merely cache the padlists */
345	static void	416	static void
346	get_padlist (pTHX_ CV *cv)	417	get_padlist (pTHX_ CV *cv)
347	{	418	{
348	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC_cv (cv);
349	AV *av;	420	AV *av;
350		421
351	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	422	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
352	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	423	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
353	else	424	else
354	{	425	{
355	#if CORO_PREFER_PERL_FUNCTIONS	426	#if CORO_PREFER_PERL_FUNCTIONS
356	/* this is probably cleaner, but also slower? */	427	/* this is probably cleaner? but also slower! */
		428	/* in practise, it seems to be less stable */
357	CV *cp = Perl_cv_clone (cv);	429	CV *cp = Perl_cv_clone (cv);
358	CvPADLIST (cv) = CvPADLIST (cp);	430	CvPADLIST (cv) = CvPADLIST (cp);
359	CvPADLIST (cp) = 0;	431	CvPADLIST (cp) = 0;
360	SvREFCNT_dec (cp);	432	SvREFCNT_dec (cp);
361	#else	433	#else
…		…
365	}	437	}
366		438
367	static void	439	static void
368	put_padlist (pTHX_ CV *cv)	440	put_padlist (pTHX_ CV *cv)
369	{	441	{
370	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
371	AV *av;	443	AV *av;
372		444
373	if (!mg)	445	if (expect_false (!mg))
374	{	446	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		447
381	av = (AV *)mg->mg_obj;	448	av = (AV *)mg->mg_obj;
382		449
383	if (AvFILLp (av) >= AvMAX (av))	450	if (expect_false (AvFILLp (av) >= AvMAX (av)))
384	av_extend (av, AvMAX (av) + 1);	451	av_extend (av, AvMAX (av) + 1);
385		452
386	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	453	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
387	}	454	}
388		455
389	/** load & save, init *******************************************************/	456	/** load & save, init *******************************************************/
390		457
391	static void	458	static void
392	load_perl (pTHX_ Coro__State c)	459	load_perl (pTHX_ Coro__State c)
393	{	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
394	#define VAR(name,type) PL_ ## name = c->name;	471	#define VAR(name,type) PL_ ## name = slot->name;
395	# include "state.h"	472	# include "state.h"
396	#undef VAR	473	#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		474
403	{	475	{
404	dSP;	476	dSP;
		477
405	CV *cv;	478	CV *cv;
406		479
407	/* now do the ugly restore mess */	480	/* now do the ugly restore mess */
408	while ((cv = (CV *)POPs))	481	while (expect_true (cv = (CV *)POPs))
409	{	482	{
410	put_padlist (aTHX_ cv); /* mark this padlist as available */	483	put_padlist (aTHX_ cv); /* mark this padlist as available */
411	CvDEPTH (cv) = PTR2IV (POPs);	484	CvDEPTH (cv) = PTR2IV (POPs);
412	CvPADLIST (cv) = (AV *)POPs;	485	CvPADLIST (cv) = (AV *)POPs;
413	}	486	}
…		…
432		505
433	XPUSHs (Nullsv);	506	XPUSHs (Nullsv);
434	/* this loop was inspired by pp_caller */	507	/* this loop was inspired by pp_caller */
435	for (;;)	508	for (;;)
436	{	509	{
437	while (cxix >= 0)	510	while (expect_true (cxix >= 0))
438	{	511	{
439	PERL_CONTEXT *cx = &ccstk[cxix--];	512	PERL_CONTEXT *cx = &ccstk[cxix--];
440		513
441	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	514	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
442	{	515	{
443	CV *cv = cx->blk_sub.cv;	516	CV *cv = cx->blk_sub.cv;
444		517
445	if (CvDEPTH (cv))	518	if (expect_true (CvDEPTH (cv)))
446	{	519	{
447	EXTEND (SP, 3);	520	EXTEND (SP, 3);
448	PUSHs ((SV *)CvPADLIST (cv));	521	PUSHs ((SV *)CvPADLIST (cv));
449	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	522	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
450	PUSHs ((SV *)cv);	523	PUSHs ((SV *)cv);
451		524
452	CvDEPTH (cv) = 0;	525	CvDEPTH (cv) = 0;
453	get_padlist (aTHX_ cv);	526	get_padlist (aTHX_ cv);
454	}	527	}
455	}	528	}
456	}	529	}
457		530
458	if (top_si->si_type == PERLSI_MAIN)	531	if (expect_true (top_si->si_type == PERLSI_MAIN))
459	break;	532	break;
460		533
461	top_si = top_si->si_prev;	534	top_si = top_si->si_prev;
462	ccstk = top_si->si_cxstack;	535	ccstk = top_si->si_cxstack;
463	cxix = top_si->si_cxix;	536	cxix = top_si->si_cxix;
464	}	537	}
465		538
466	PUTBACK;	539	PUTBACK;
467	}	540	}
468		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
469	c->defav = GvAV (PL_defgv);	559	slot->defav = GvAV (PL_defgv);
470	c->defsv = DEFSV;	560	slot->defsv = DEFSV;
471	c->errsv = ERRSV;	561	slot->errsv = ERRSV;
472	c->irssv_sv = GvSV (irsgv);	562	slot->irsgv = GvSV (irsgv);
473		563
474	#define VAR(name,type)c->name = PL_ ## name;	564	#define VAR(name,type) slot->name = PL_ ## name;
475	# include "state.h"	565	# include "state.h"
476	#undef VAR	566	#undef VAR
		567	}
477	}	568	}
478		569
479	/*	570	/*
480	* allocate various perl stacks. This is an exact copy	571	* allocate various perl stacks. This is an exact copy
481	* of perl.c:init_stacks, except that it uses less memory	572	* of perl.c:init_stacks, except that it uses less memory
…		…
486	# define coro_init_stacks init_stacks	577	# define coro_init_stacks init_stacks
487	#else	578	#else
488	static void	579	static void
489	coro_init_stacks (pTHX)	580	coro_init_stacks (pTHX)
490	{	581	{
491	PL_curstackinfo = new_stackinfo(64, 6);	582	PL_curstackinfo = new_stackinfo(32, 8);
492	PL_curstackinfo->si_type = PERLSI_MAIN;	583	PL_curstackinfo->si_type = PERLSI_MAIN;
493	PL_curstack = PL_curstackinfo->si_stack;	584	PL_curstack = PL_curstackinfo->si_stack;
494	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	585	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
495		586
496	PL_stack_base = AvARRAY(PL_curstack);	587	PL_stack_base = AvARRAY(PL_curstack);
497	PL_stack_sp = PL_stack_base;	588	PL_stack_sp = PL_stack_base;
498	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	589	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
499		590
500	New(50,PL_tmps_stack,64,SV*);	591	New(50,PL_tmps_stack,32,SV*);
501	PL_tmps_floor = -1;	592	PL_tmps_floor = -1;
502	PL_tmps_ix = -1;	593	PL_tmps_ix = -1;
503	PL_tmps_max = 64;	594	PL_tmps_max = 32;
504		595
505	New(54,PL_markstack,16,I32);	596	New(54,PL_markstack,16,I32);
506	PL_markstack_ptr = PL_markstack;	597	PL_markstack_ptr = PL_markstack;
507	PL_markstack_max = PL_markstack + 16;	598	PL_markstack_max = PL_markstack + 16;
508		599
509	#ifdef SET_MARK_OFFSET	600	#ifdef SET_MARK_OFFSET
510	SET_MARK_OFFSET;	601	SET_MARK_OFFSET;
511	#endif	602	#endif
512		603
513	New(54,PL_scopestack,16,I32);	604	New(54,PL_scopestack,8,I32);
514	PL_scopestack_ix = 0;	605	PL_scopestack_ix = 0;
515	PL_scopestack_max = 16;	606	PL_scopestack_max = 8;
516		607
517	New(54,PL_savestack,64,ANY);	608	New(54,PL_savestack,24,ANY);
518	PL_savestack_ix = 0;	609	PL_savestack_ix = 0;
519	PL_savestack_max = 64;	610	PL_savestack_max = 24;
520		611
521	#if !PERL_VERSION_ATLEAST (5,9,0)	612	#if !PERL_VERSION_ATLEAST (5,10,0)
522	New(54,PL_retstack,4,OP*);	613	New(54,PL_retstack,4,OP*);
523	PL_retstack_ix = 0;	614	PL_retstack_ix = 0;
524	PL_retstack_max = 4;	615	PL_retstack_max = 4;
525	#endif	616	#endif
526	}	617	}
…		…
549		640
550	Safefree (PL_tmps_stack);	641	Safefree (PL_tmps_stack);
551	Safefree (PL_markstack);	642	Safefree (PL_markstack);
552	Safefree (PL_scopestack);	643	Safefree (PL_scopestack);
553	Safefree (PL_savestack);	644	Safefree (PL_savestack);
554	#if !PERL_VERSION_ATLEAST (5,9,0)	645	#if !PERL_VERSION_ATLEAST (5,10,0)
555	Safefree (PL_retstack);	646	Safefree (PL_retstack);
556	#endif	647	#endif
557	}	648	}
558		649
559	static size_t	650	static size_t
…		…
561	{	652	{
562	size_t rss = sizeof (*coro);	653	size_t rss = sizeof (*coro);
563		654
564	if (coro->mainstack)	655	if (coro->mainstack)
565	{	656	{
		657	perl_slots tmp_slot;
		658	perl_slots *slot;
		659
566	if (coro->flags & CF_RUNNING)	660	if (coro->flags & CF_RUNNING)
567	{	661	{
		662	slot = &tmp_slot;
		663
568	#define VAR(name,type)coro->name = PL_ ## name;	664	#define VAR(name,type) slot->name = PL_ ## name;
569	# include "state.h"	665	# include "state.h"
570	#undef VAR	666	#undef VAR
571	}	667	}
		668	else
		669	slot = coro->slot;
572		670
573	rss += sizeof (coro->curstackinfo);	671	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);	672	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
576	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	673	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
577	rss += coro->tmps_max * sizeof (SV *);	674	rss += slot->tmps_max * sizeof (SV *);
578	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	675	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
579	rss += coro->scopestack_max * sizeof (I32);	676	rss += slot->scopestack_max * sizeof (I32);
580	rss += coro->savestack_max * sizeof (ANY);	677	rss += slot->savestack_max * sizeof (ANY);
581		678
582	#if !PERL_VERSION_ATLEAST (5,9,0)	679	#if !PERL_VERSION_ATLEAST (5,10,0)
583	rss += coro->retstack_max * sizeof (OP *);	680	rss += slot->retstack_max * sizeof (OP *);
584	#endif	681	#endif
585	}	682	}
586		683
587	return rss;	684	return rss;
588	}	685	}
589		686
590	/** coroutine stack handling ************************************************/	687	/** coroutine stack handling ************************************************/
		688
		689	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		690	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		691	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		692
		693	/* apparently < 5.8.8 */
		694	#ifndef MgPV_nolen_const
		695	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		696	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		697	(const char*)(mg)->mg_ptr)
		698	#endif
		699
		700	/*
		701	* This overrides the default magic get method of %SIG elements.
		702	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		703	* and instead of tryign to save and restore the hash elements, we just provide
		704	* readback here.
		705	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		706	* not expecting this to actually change the hook. This is a potential problem
		707	* when a schedule happens then, but we ignore this.
		708	*/
		709	static int
		710	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		711	{
		712	const char *s = MgPV_nolen_const (mg);
		713
		714	if (*s == '_')
		715	{
		716	SV **svp = 0;
		717
		718	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		719	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		720
		721	if (svp)
		722	{
		723	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		724	return 0;
		725	}
		726	}
		727
		728	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		729	}
		730
		731	static int
		732	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		733	{
		734	const char *s = MgPV_nolen_const (mg);
		735
		736	if (*s == '_')
		737	{
		738	SV **svp = 0;
		739
		740	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		741	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		742
		743	if (svp)
		744	{
		745	SV *old = *svp;
		746	*svp = 0;
		747	SvREFCNT_dec (old);
		748	return 0;
		749	}
		750	}
		751
		752	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		753	}
		754
		755	static int
		756	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		757	{
		758	const char *s = MgPV_nolen_const (mg);
		759
		760	if (*s == '_')
		761	{
		762	SV **svp = 0;
		763
		764	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		765	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		766
		767	if (svp)
		768	{
		769	SV *old = *svp;
		770	*svp = newSVsv (sv);
		771	SvREFCNT_dec (old);
		772	return 0;
		773	}
		774	}
		775
		776	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		777	}
591		778
592	static void	779	static void
593	coro_setup (pTHX_ struct coro *coro)	780	coro_setup (pTHX_ struct coro *coro)
594	{	781	{
595	/*	782	/*
…		…
600	PL_runops = RUNOPS_DEFAULT;	787	PL_runops = RUNOPS_DEFAULT;
601	PL_curcop = &PL_compiling;	788	PL_curcop = &PL_compiling;
602	PL_in_eval = EVAL_NULL;	789	PL_in_eval = EVAL_NULL;
603	PL_comppad = 0;	790	PL_comppad = 0;
604	PL_curpm = 0;	791	PL_curpm = 0;
		792	PL_curpad = 0;
605	PL_localizing = 0;	793	PL_localizing = 0;
606	PL_dirty = 0;	794	PL_dirty = 0;
607	PL_restartop = 0;	795	PL_restartop = 0;
		796	#if PERL_VERSION_ATLEAST (5,10,0)
		797	PL_parser = 0;
		798	#endif
		799
		800	/* recreate the die/warn hooks */
		801	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		802	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
608		803
609	GvSV (PL_defgv) = NEWSV (0, 0);	804	GvSV (PL_defgv) = newSV (0);
610	GvAV (PL_defgv) = coro->args; coro->args = 0;	805	GvAV (PL_defgv) = coro->args; coro->args = 0;
611	GvSV (PL_errgv) = NEWSV (0, 0);	806	GvSV (PL_errgv) = newSV (0);
612	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	807	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
613	PL_rs = newSVsv (GvSV (irsgv));	808	PL_rs = newSVsv (GvSV (irsgv));
614	PL_defoutgv = SvREFCNT_inc (stdoutgv);	809	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
615		810
616	{	811	{
617	dSP;	812	dSP;
618	LOGOP myop;	813	LOGOP myop;
619		814
620	Zero (&myop, 1, LOGOP);	815	Zero (&myop, 1, LOGOP);
621	myop.op_next = Nullop;	816	myop.op_next = Nullop;
622	myop.op_flags = OPf_WANT_VOID;	817	myop.op_flags = OPf_WANT_VOID;
623		818
624	PUSHMARK (SP);	819	PUSHMARK (SP);
625	XPUSHs (av_shift (GvAV (PL_defgv)));	820	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
626	PUTBACK;	821	PUTBACK;
627	PL_op = (OP *)&myop;	822	PL_op = (OP *)&myop;
628	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	823	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
629	SPAGAIN;	824	SPAGAIN;
630	}	825	}
631		826
632	ENTER; /* necessary e.g. for dounwind */	827	/* this newly created coroutine might be run on an existing cctx which most
		828	* likely was suspended in set_stacklevel, called from entersub.
		829	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		830	* so we ENTER here for symmetry
		831	*/
		832	ENTER;
633	}	833	}
634		834
635	static void	835	static void
636	coro_destroy (pTHX_ struct coro *coro)	836	coro_destroy (pTHX_ struct coro *coro)
637	{	837	{
…		…
657	SvREFCNT_dec (GvSV (PL_errgv));	857	SvREFCNT_dec (GvSV (PL_errgv));
658	SvREFCNT_dec (PL_defoutgv);	858	SvREFCNT_dec (PL_defoutgv);
659	SvREFCNT_dec (PL_rs);	859	SvREFCNT_dec (PL_rs);
660	SvREFCNT_dec (GvSV (irsgv));	860	SvREFCNT_dec (GvSV (irsgv));
661		861
		862	SvREFCNT_dec (PL_diehook);
		863	SvREFCNT_dec (PL_warnhook);
		864
662	SvREFCNT_dec (coro->saved_deffh);	865	SvREFCNT_dec (coro->saved_deffh);
663	//SvREFCNT_dec (coro->throw);	866	SvREFCNT_dec (coro->throw);
664		867
665	coro_destroy_stacks (aTHX);	868	coro_destroy_stacks (aTHX);
666	}	869	}
667		870
668	static void	871	static void
669	free_coro_mortal (pTHX)	872	free_coro_mortal (pTHX)
670	{	873	{
671	if (coro_mortal)	874	if (expect_true (coro_mortal))
672	{	875	{
673	SvREFCNT_dec (coro_mortal);	876	SvREFCNT_dec (coro_mortal);
674	coro_mortal = 0;	877	coro_mortal = 0;
675	}	878	}
676	}	879	}
…		…
705	bot = PL_stack_base + cx->blk_oldsp + 1;	908	bot = PL_stack_base + cx->blk_oldsp + 1;
706	top = cx->blk_gimme == G_ARRAY ? SP + 1	909	top = cx->blk_gimme == G_ARRAY ? SP + 1
707	: cx->blk_gimme == G_SCALAR ? bot + 1	910	: cx->blk_gimme == G_SCALAR ? bot + 1
708	: bot;	911	: bot;
709		912
		913	av_extend (av, top - bot);
710	while (bot < top)	914	while (bot < top)
711	av_push (av, SvREFCNT_inc (*bot++));	915	av_push (av, SvREFCNT_inc (*bot++));
712		916
713	PL_runops = RUNOPS_DEFAULT;	917	PL_runops = RUNOPS_DEFAULT;
714	ENTER;	918	ENTER;
…		…
754	SAVETMPS;	958	SAVETMPS;
755	EXTEND (SP, 3);	959	EXTEND (SP, 3);
756	PUSHMARK (SP);	960	PUSHMARK (SP);
757	PUSHs (&PL_sv_yes);	961	PUSHs (&PL_sv_yes);
758	PUSHs (fullname);	962	PUSHs (fullname);
759	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	963	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
760	PUTBACK;	964	PUTBACK;
761	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	965	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);	966	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
763	SPAGAIN;	967	SPAGAIN;
764	FREETMPS;	968	FREETMPS;
…		…
800		1004
801	/* inject a fake call to Coro::State::_cctx_init into the execution */	1005	/* 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 */	1006	/* _cctx_init should be careful, as it could be called at almost any time */
803	/* during execution of a perl program */	1007	/* during execution of a perl program */
804	static void NOINLINE	1008	static void NOINLINE
805	prepare_cctx (pTHX_ coro_cctx *cctx)	1009	cctx_prepare (pTHX_ coro_cctx *cctx)
806	{	1010	{
807	dSP;	1011	dSP;
808	LOGOP myop;	1012	LOGOP myop;
809		1013
810	PL_top_env = &PL_start_env;	1014	PL_top_env = &PL_start_env;
…		…
828		1032
829	/*	1033	/*
830	* this is a _very_ stripped down perl interpreter ;)	1034	* this is a _very_ stripped down perl interpreter ;)
831	*/	1035	*/
832	static void	1036	static void
833	coro_run (void *arg)	1037	cctx_run (void *arg)
834	{	1038	{
835	dTHX;	1039	dTHX;
836		1040
837	/* coro_run is the alternative tail of transfer(), so unlock here. */	1041	/* cctx_run is the alternative tail of transfer(), so unlock here. */
838	UNLOCK;	1042	UNLOCK;
839		1043
840	/* we now skip the entersub that lead to transfer() */	1044	/* we now skip the entersub that lead to transfer() */
841	PL_op = PL_op->op_next;	1045	PL_op = PL_op->op_next;
842		1046
843	/* inject a fake subroutine call to cctx_init */	1047	/* inject a fake subroutine call to cctx_init */
844	prepare_cctx (aTHX_ (coro_cctx *)arg);	1048	cctx_prepare (aTHX_ (coro_cctx *)arg);
845		1049
846	/* somebody or something will hit me for both perl_run and PL_restartop */	1050	/* somebody or something will hit me for both perl_run and PL_restartop */
847	PL_restartop = PL_op;	1051	PL_restartop = PL_op;
848	perl_run (PL_curinterp);	1052	perl_run (PL_curinterp);
849		1053
…		…
868	++cctx_count;	1072	++cctx_count;
869		1073
870	Newz (0, cctx, 1, coro_cctx);	1074	Newz (0, cctx, 1, coro_cctx);
871		1075
872	#if HAVE_MMAP	1076	#if HAVE_MMAP
873
874	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1077	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
875	/* mmap supposedly does allocate-on-write for us */	1078	/* 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);	1079	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
877		1080
878	if (cctx->sptr != (void *)-1)	1081	if (cctx->sptr != (void *)-1)
…		…
899	stack_start = cctx->sptr;	1102	stack_start = cctx->sptr;
900	stack_size = cctx->ssize;	1103	stack_size = cctx->ssize;
901	}	1104	}
902		1105
903	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1106	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
904	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1107	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
905		1108
906	return cctx;	1109	return cctx;
907	}	1110	}
908		1111
909	static void	1112	static void
…		…
926	Safefree (cctx->sptr);	1129	Safefree (cctx->sptr);
927		1130
928	Safefree (cctx);	1131	Safefree (cctx);
929	}	1132	}
930		1133
		1134	/* wether this cctx should be destructed */
		1135	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1136
931	static coro_cctx *	1137	static coro_cctx *
932	cctx_get (pTHX)	1138	cctx_get (pTHX)
933	{	1139	{
934	while (cctx_first)	1140	while (expect_true (cctx_first))
935	{	1141	{
936	coro_cctx *cctx = cctx_first;	1142	coro_cctx *cctx = cctx_first;
937	cctx_first = cctx->next;	1143	cctx_first = cctx->next;
938	--cctx_idle;	1144	--cctx_idle;
939		1145
940	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1146	if (expect_true (!CCTX_EXPIRED (cctx)))
941	return cctx;	1147	return cctx;
942		1148
943	cctx_destroy (cctx);	1149	cctx_destroy (cctx);
944	}	1150	}
945		1151
…		…
948		1154
949	static void	1155	static void
950	cctx_put (coro_cctx *cctx)	1156	cctx_put (coro_cctx *cctx)
951	{	1157	{
952	/* free another cctx if overlimit */	1158	/* free another cctx if overlimit */
953	if (cctx_idle >= MAX_IDLE_CCTX)	1159	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
954	{	1160	{
955	coro_cctx *first = cctx_first;	1161	coro_cctx *first = cctx_first;
956	cctx_first = first->next;	1162	cctx_first = first->next;
957	--cctx_idle;	1163	--cctx_idle;
958		1164
…		…
964	cctx_first = cctx;	1170	cctx_first = cctx;
965	}	1171	}
966		1172
967	/** coroutine switching *****************************************************/	1173	/** coroutine switching *****************************************************/
968		1174
969	static void NOINLINE	1175	static void
970	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1176	transfer_check (pTHX_ struct coro *prev, struct coro *next)
971	{	1177	{
972	if (prev != next)	1178	if (expect_true (prev != next))
973	{	1179	{
974	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1180	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");	1181	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
976		1182
977	if (next->flags & CF_RUNNING)	1183	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");	1184	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
979		1185
980	if (next->flags & CF_DESTROYED)	1186	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");	1187	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
982		1188
		1189	#if !PERL_VERSION_ATLEAST (5,10,0)
983	if (PL_lex_state != LEX_NOTPARSING)	1190	if (expect_false (PL_lex_state != LEX_NOTPARSING))
984	croak ("Coro::State::transfer called while parsing, but this is not supported");	1191	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1192	#endif
985	}	1193	}
986	}	1194	}
987		1195
988	/* always use the TRANSFER macro */	1196	/* always use the TRANSFER macro */
989	static void NOINLINE	1197	static void NOINLINE
990	transfer (pTHX_ struct coro *prev, struct coro *next)	1198	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
991	{	1199	{
992	dSTACKLEVEL;	1200	dSTACKLEVEL;
		1201	static volatile int has_throw;
993		1202
994	/* sometimes transfer is only called to set idle_sp */	1203	/* sometimes transfer is only called to set idle_sp */
995	if (!next)	1204	if (expect_false (!next))
996	{	1205	{
997	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1206	((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 */	1207	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
999	}	1208	}
1000	else if (prev != next)	1209	else if (expect_true (prev != next))
1001	{	1210	{
1002	coro_cctx *prev__cctx;	1211	coro_cctx *prev__cctx;
1003		1212
1004	if (prev->flags & CF_NEW)	1213	if (expect_false (prev->flags & CF_NEW))
1005	{	1214	{
1006	/* create a new empty context */	1215	/* create a new empty context */
1007	Newz (0, prev->cctx, 1, coro_cctx);	1216	Newz (0, prev->cctx, 1, coro_cctx);
1008	prev->flags &= ~CF_NEW;	1217	prev->flags &= ~CF_NEW;
1009	prev->flags |= CF_RUNNING;	1218	prev->flags |= CF_RUNNING;
…		…
1012	prev->flags &= ~CF_RUNNING;	1221	prev->flags &= ~CF_RUNNING;
1013	next->flags |= CF_RUNNING;	1222	next->flags |= CF_RUNNING;
1014		1223
1015	LOCK;	1224	LOCK;
1016		1225
		1226	/* first get rid of the old state */
		1227	save_perl (aTHX_ prev);
		1228
1017	if (next->flags & CF_NEW)	1229	if (expect_false (next->flags & CF_NEW))
1018	{	1230	{
1019	/* need to start coroutine */	1231	/* need to start coroutine */
1020	next->flags &= ~CF_NEW;	1232	next->flags &= ~CF_NEW;
1021	/* first get rid of the old state */
1022	save_perl (aTHX_ prev);
1023	/* setup coroutine call */	1233	/* setup coroutine call */
1024	coro_setup (aTHX_ next);	1234	coro_setup (aTHX_ next);
1025	}	1235	}
1026	else	1236	else
1027	{
1028	/* coroutine already started */
1029	save_perl (aTHX_ prev);
1030	load_perl (aTHX_ next);	1237	load_perl (aTHX_ next);
1031	}
1032		1238
1033	prev__cctx = prev->cctx;	1239	prev__cctx = prev->cctx;
1034		1240
1035	/* possibly "free" the cctx */	1241	/* possibly "free" the cctx */
1036	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1242	if (expect_true (
		1243	prev__cctx->idle_sp == STACKLEVEL
		1244	&& !(prev__cctx->flags & CC_TRACE)
		1245	&& !force_cctx
		1246	))
1037	{	1247	{
1038	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1248	/* 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));	1249	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1040		1250
1041	prev->cctx = 0;	1251	prev->cctx = 0;
1042		1252
		1253	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1254	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1255	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1256	if (!next->cctx)
		1257	next->cctx = cctx_get (aTHX);
		1258
1043	cctx_put (prev__cctx);	1259	cctx_put (prev__cctx);
1044	}	1260	}
1045		1261
1046	++next->usecount;	1262	++next->usecount;
1047		1263
1048	if (!next->cctx)	1264	if (expect_true (!next->cctx))
1049	next->cctx = cctx_get (aTHX);	1265	next->cctx = cctx_get (aTHX);
1050		1266
		1267	has_throw = !!next->throw;
		1268
1051	if (prev__cctx != next->cctx)	1269	if (expect_false (prev__cctx != next->cctx))
1052	{	1270	{
1053	prev__cctx->top_env = PL_top_env;	1271	prev__cctx->top_env = PL_top_env;
1054	PL_top_env = next->cctx->top_env;	1272	PL_top_env = next->cctx->top_env;
1055	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1273	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1056	}	1274	}
1057		1275
1058	free_coro_mortal (aTHX);	1276	free_coro_mortal (aTHX);
1059	UNLOCK;	1277	UNLOCK;
		1278
		1279	if (expect_false (has_throw))
		1280	{
		1281	struct coro *coro = SvSTATE (coro_current);
		1282
		1283	if (coro->throw)
		1284	{
		1285	SV *exception = coro->throw;
		1286	coro->throw = 0;
		1287	sv_setsv (ERRSV, exception);
		1288	croak (0);
		1289	}
		1290	}
1060	}	1291	}
1061	}	1292	}
1062		1293
1063	struct transfer_args	1294	struct transfer_args
1064	{	1295	{
1065	struct coro *prev, *next;	1296	struct coro *prev, *next;
1066	};	1297	};
1067		1298
1068	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1299	#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)	1300	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1070		1301
1071	/** high level stuff ********************************************************/	1302	/** high level stuff ********************************************************/
1072		1303
1073	static int	1304	static int
…		…
1099	save_perl (aTHX_ &temp);	1330	save_perl (aTHX_ &temp);
1100	load_perl (aTHX_ coro);	1331	load_perl (aTHX_ coro);
1101		1332
1102	coro_destroy (aTHX_ coro);	1333	coro_destroy (aTHX_ coro);
1103		1334
1104	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1335	load_perl (aTHX_ &temp);
1105		1336
1106	coro->mainstack = 0;	1337	coro->slot = 0;
1107	}	1338	}
1108		1339
1109	cctx_destroy (coro->cctx);	1340	cctx_destroy (coro->cctx);
1110	SvREFCNT_dec (coro->args);	1341	SvREFCNT_dec (coro->args);
1111		1342
…		…
1167	{	1398	{
1168	dTHX;	1399	dTHX;
1169	struct transfer_args ta;	1400	struct transfer_args ta;
1170		1401
1171	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1402	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1172	TRANSFER (ta);	1403	TRANSFER (ta, 1);
1173	}	1404	}
1174		1405
1175	/** Coro ********************************************************************/	1406	/** Coro ********************************************************************/
1176		1407
1177	static void	1408	static void
…		…
1179	{	1410	{
1180	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1411	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1181	}	1412	}
1182		1413
1183	static SV *	1414	static SV *
1184	coro_deq (pTHX_ int min_prio)	1415	coro_deq (pTHX)
1185	{	1416	{
1186	int prio = PRIO_MAX - PRIO_MIN;	1417	int prio;
1187		1418
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; )	1419	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1193	if (AvFILLp (coro_ready [prio]) >= 0)	1420	if (AvFILLp (coro_ready [prio]) >= 0)
1194	return av_shift (coro_ready [prio]);	1421	return av_shift (coro_ready [prio]);
1195		1422
1196	return 0;	1423	return 0;
1197	}	1424	}
…		…
1199	static int	1426	static int
1200	api_ready (SV *coro_sv)	1427	api_ready (SV *coro_sv)
1201	{	1428	{
1202	dTHX;	1429	dTHX;
1203	struct coro *coro;	1430	struct coro *coro;
		1431	SV *sv_hook;
		1432	void (*xs_hook)(void);
1204		1433
1205	if (SvROK (coro_sv))	1434	if (SvROK (coro_sv))
1206	coro_sv = SvRV (coro_sv);	1435	coro_sv = SvRV (coro_sv);
1207		1436
1208	coro = SvSTATE (coro_sv);	1437	coro = SvSTATE (coro_sv);
…		…
1211	return 0;	1440	return 0;
1212		1441
1213	coro->flags |= CF_READY;	1442	coro->flags |= CF_READY;
1214		1443
1215	LOCK;	1444	LOCK;
		1445
		1446	sv_hook = coro_nready ? 0 : coro_readyhook;
		1447	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1448
1216	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1449	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1217	++coro_nready;	1450	++coro_nready;
		1451
1218	UNLOCK;	1452	UNLOCK;
		1453
		1454	if (sv_hook)
		1455	{
		1456	dSP;
		1457
		1458	ENTER;
		1459	SAVETMPS;
		1460
		1461	PUSHMARK (SP);
		1462	PUTBACK;
		1463	call_sv (sv_hook, G_DISCARD);
		1464	SPAGAIN;
		1465
		1466	FREETMPS;
		1467	LEAVE;
		1468	}
		1469
		1470	if (xs_hook)
		1471	xs_hook ();
1219		1472
1220	return 1;	1473	return 1;
1221	}	1474	}
1222		1475
1223	static int	1476	static int
…		…
1233	SV *prev_sv, *next_sv;	1486	SV *prev_sv, *next_sv;
1234		1487
1235	for (;;)	1488	for (;;)
1236	{	1489	{
1237	LOCK;	1490	LOCK;
1238	next_sv = coro_deq (aTHX_ PRIO_MIN);	1491	next_sv = coro_deq (aTHX);
1239		1492
1240	/* nothing to schedule: call the idle handler */	1493	/* nothing to schedule: call the idle handler */
1241	if (!next_sv)	1494	if (expect_false (!next_sv))
1242	{	1495	{
1243	dSP;	1496	dSP;
1244	UNLOCK;	1497	UNLOCK;
1245		1498
1246	ENTER;	1499	ENTER;
1247	SAVETMPS;	1500	SAVETMPS;
1248		1501
1249	PUSHMARK (SP);	1502	PUSHMARK (SP);
1250	PUTBACK;	1503	PUTBACK;
1251	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1504	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1505	SPAGAIN;
1252		1506
1253	FREETMPS;	1507	FREETMPS;
1254	LEAVE;	1508	LEAVE;
1255	continue;	1509	continue;
1256	}	1510	}
1257		1511
1258	ta->next = SvSTATE (next_sv);	1512	ta->next = SvSTATE (next_sv);
1259		1513
1260	/* cannot transfer to destroyed coros, skip and look for next */	1514	/* cannot transfer to destroyed coros, skip and look for next */
1261	if (ta->next->flags & CF_DESTROYED)	1515	if (expect_false (ta->next->flags & CF_DESTROYED))
1262	{	1516	{
1263	UNLOCK;	1517	UNLOCK;
1264	SvREFCNT_dec (next_sv);	1518	SvREFCNT_dec (next_sv);
1265	/* coro_nready is already taken care of by destroy */	1519	/* coro_nready is already taken care of by destroy */
1266	continue;	1520	continue;
…		…
1311	{	1565	{
1312	dTHX;	1566	dTHX;
1313	struct transfer_args ta;	1567	struct transfer_args ta;
1314		1568
1315	prepare_schedule (aTHX_ &ta);	1569	prepare_schedule (aTHX_ &ta);
1316	TRANSFER (ta);	1570	TRANSFER (ta, 1);
1317	}	1571	}
1318		1572
1319	static int	1573	static int
1320	api_cede (void)	1574	api_cede (void)
1321	{	1575	{
1322	dTHX;	1576	dTHX;
1323	struct transfer_args ta;	1577	struct transfer_args ta;
1324		1578
1325	prepare_cede (aTHX_ &ta);	1579	prepare_cede (aTHX_ &ta);
1326		1580
1327	if (ta.prev != ta.next)	1581	if (expect_true (ta.prev != ta.next))
1328	{	1582	{
1329	TRANSFER (ta);	1583	TRANSFER (ta, 1);
1330	return 1;	1584	return 1;
1331	}	1585	}
1332	else	1586	else
1333	return 0;	1587	return 0;
1334	}	1588	}
…		…
1339	dTHX;	1593	dTHX;
1340	struct transfer_args ta;	1594	struct transfer_args ta;
1341		1595
1342	if (prepare_cede_notself (aTHX_ &ta))	1596	if (prepare_cede_notself (aTHX_ &ta))
1343	{	1597	{
1344	TRANSFER (ta);	1598	TRANSFER (ta, 1);
1345	return 1;	1599	return 1;
1346	}	1600	}
1347	else	1601	else
1348	return 0;	1602	return 0;
1349	}	1603	}
…		…
1368	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1622	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1369		1623
1370	if (coro->flags & CF_RUNNING)	1624	if (coro->flags & CF_RUNNING)
1371	PL_runops = RUNOPS_DEFAULT;	1625	PL_runops = RUNOPS_DEFAULT;
1372	else	1626	else
1373	coro->runops = RUNOPS_DEFAULT;	1627	coro->slot->runops = RUNOPS_DEFAULT;
1374	}	1628	}
1375	}	1629	}
		1630
		1631	static int
		1632	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1633	{
		1634	AV *padlist;
		1635	AV *av = (AV *)mg->mg_obj;
		1636
		1637	abort ();
		1638
		1639	return 0;
		1640	}
		1641
		1642	static MGVTBL coro_gensub_vtbl = {
		1643	0, 0, 0, 0,
		1644	coro_gensub_free
		1645	};
1376		1646
1377	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1647	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1378		1648
1379	PROTOTYPES: DISABLE	1649	PROTOTYPES: DISABLE
1380		1650
…		…
1385	#endif	1655	#endif
1386	BOOT_PAGESIZE;	1656	BOOT_PAGESIZE;
1387		1657
1388	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1658	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1389	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1659	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1660
		1661	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1662	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1663	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1664
		1665	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1666	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1667	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1390		1668
1391	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1669	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1392		1670
1393	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1671	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1394	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1672	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1399	main_top_env = PL_top_env;	1677	main_top_env = PL_top_env;
1400		1678
1401	while (main_top_env->je_prev)	1679	while (main_top_env->je_prev)
1402	main_top_env = main_top_env->je_prev;	1680	main_top_env = main_top_env->je_prev;
1403		1681
1404	coroapi.ver = CORO_API_VERSION;	1682	coroapi.ver = CORO_API_VERSION;
		1683	coroapi.rev = CORO_API_REVISION;
1405	coroapi.transfer = api_transfer;	1684	coroapi.transfer = api_transfer;
1406		1685
1407	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1686	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1408	}	1687	}
1409		1688
1410	SV *	1689	SV *
1411	new (char *klass, ...)	1690	new (char *klass, ...)
1412	CODE:	1691	CODE:
1413	{	1692	{
1414	struct coro *coro;	1693	struct coro *coro;
		1694	MAGIC *mg;
1415	HV *hv;	1695	HV *hv;
1416	int i;	1696	int i;
1417		1697
1418	Newz (0, coro, 1, struct coro);	1698	Newz (0, coro, 1, struct coro);
1419	coro->args = newAV ();	1699	coro->args = newAV ();
…		…
1422	if (coro_first) coro_first->prev = coro;	1702	if (coro_first) coro_first->prev = coro;
1423	coro->next = coro_first;	1703	coro->next = coro_first;
1424	coro_first = coro;	1704	coro_first = coro;
1425		1705
1426	coro->hv = hv = newHV ();	1706	coro->hv = hv = newHV ();
1427	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1707	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1708	mg->mg_flags |= MGf_DUP;
1428	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1709	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1429		1710
		1711	av_extend (coro->args, items - 1);
1430	for (i = 1; i < items; i++)	1712	for (i = 1; i < items; i++)
1431	av_push (coro->args, newSVsv (ST (i)));	1713	av_push (coro->args, newSVsv (ST (i)));
1432	}	1714	}
1433	OUTPUT:	1715	OUTPUT:
1434	RETVAL	1716	RETVAL
…		…
1445	Coro::cede_notself = 4	1727	Coro::cede_notself = 4
1446	CODE:	1728	CODE:
1447	{	1729	{
1448	struct transfer_args ta;	1730	struct transfer_args ta;
1449		1731
		1732	PUTBACK;
1450	switch (ix)	1733	switch (ix)
1451	{	1734	{
1452	case 0:	1735	case 0:
1453	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1736	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1454	ta.next = 0;	1737	ta.next = 0;
…		…
1473	if (!prepare_cede_notself (aTHX_ &ta))	1756	if (!prepare_cede_notself (aTHX_ &ta))
1474	XSRETURN_EMPTY;	1757	XSRETURN_EMPTY;
1475		1758
1476	break;	1759	break;
1477	}	1760	}
		1761	SPAGAIN;
1478		1762
1479	BARRIER;	1763	BARRIER;
		1764	PUTBACK;
1480	TRANSFER (ta);	1765	TRANSFER (ta, 0);
1481		1766	SPAGAIN; /* might be the sp of a different coroutine now */
1482	if (GIMME_V != G_VOID && ta.next != ta.prev)	1767	/* be extra careful not to ever do anything after TRANSFER */
1483	XSRETURN_YES;
1484	}	1768	}
1485		1769
1486	bool	1770	bool
1487	_destroy (SV *coro_sv)	1771	_destroy (SV *coro_sv)
1488	CODE:	1772	CODE:
1489	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1773	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1490	OUTPUT:	1774	OUTPUT:
1491	RETVAL	1775	RETVAL
1492		1776
1493	void	1777	void
1494	_exit (code)	1778	_exit (int code)
1495	int code
1496	PROTOTYPE: $	1779	PROTOTYPE: $
1497	CODE:	1780	CODE:
1498	_exit (code);	1781	_exit (code);
1499		1782
1500	int	1783	int
…		…
1537	CODE:	1820	CODE:
1538	{	1821	{
1539	if (coro->mainstack)	1822	if (coro->mainstack)
1540	{	1823	{
1541	struct coro temp;	1824	struct coro temp;
1542	Zero (&temp, 1, struct coro);
1543		1825
1544	if (!(coro->flags & CF_RUNNING))	1826	if (!(coro->flags & CF_RUNNING))
1545	{	1827	{
		1828	PUTBACK;
1546	save_perl (aTHX_ &temp);	1829	save_perl (aTHX_ &temp);
1547	load_perl (aTHX_ coro);	1830	load_perl (aTHX_ coro);
1548	}	1831	}
1549		1832
1550	{	1833	{
1551	dSP;	1834	dSP;
1552	ENTER;	1835	ENTER;
1553	SAVETMPS;	1836	SAVETMPS;
		1837	PUTBACK;
		1838	PUSHSTACK;
1554	PUSHMARK (SP);	1839	PUSHMARK (SP);
1555	PUTBACK;	1840
1556	if (ix)	1841	if (ix)
1557	eval_sv (coderef, 0);	1842	eval_sv (coderef, 0);
1558	else	1843	else
1559	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1844	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1845
		1846	POPSTACK;
1560	SPAGAIN;	1847	SPAGAIN;
1561	FREETMPS;	1848	FREETMPS;
1562	LEAVE;	1849	LEAVE;
1563	PUTBACK;	1850	PUTBACK;
1564	}	1851	}
1565		1852
1566	if (!(coro->flags & CF_RUNNING))	1853	if (!(coro->flags & CF_RUNNING))
1567	{	1854	{
1568	save_perl (aTHX_ coro);	1855	save_perl (aTHX_ coro);
1569	load_perl (aTHX_ &temp);	1856	load_perl (aTHX_ &temp);
		1857	SPAGAIN;
1570	}	1858	}
1571	}	1859	}
1572	}	1860	}
1573		1861
1574	SV *	1862	SV *
…		…
1586		1874
1587	void	1875	void
1588	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1876	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1589		1877
1590	SV *	1878	SV *
1591	has_stack (Coro::State coro)	1879	has_cctx (Coro::State coro)
1592	PROTOTYPE: $	1880	PROTOTYPE: $
1593	CODE:	1881	CODE:
1594	RETVAL = boolSV (!!coro->cctx);	1882	RETVAL = boolSV (!!coro->cctx);
1595	OUTPUT:	1883	OUTPUT:
1596	RETVAL	1884	RETVAL
…		…
1615	case 1: RETVAL = coro->usecount; break;	1903	case 1: RETVAL = coro->usecount; break;
1616	}	1904	}
1617	OUTPUT:	1905	OUTPUT:
1618	RETVAL	1906	RETVAL
1619		1907
		1908	void
		1909	force_cctx ()
		1910	CODE:
		1911	struct coro *coro = SvSTATE (coro_current);
		1912	coro->cctx->idle_sp = 0;
		1913
		1914	void
		1915	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1916	PROTOTYPE: $;$
		1917	CODE:
		1918	SvREFCNT_dec (self->throw);
		1919	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1920
		1921	void
		1922	swap_defsv (Coro::State self)
		1923	PROTOTYPE: $
		1924	ALIAS:
		1925	swap_defav = 1
		1926	CODE:
		1927	if (!self->slot)
		1928	croak ("cannot swap state with coroutine that has no saved state");
		1929	else
		1930	{
		1931	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1932	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		1933
		1934	SV *tmp = *src; *src = *dst; *dst = tmp;
		1935	}
1620		1936
1621	MODULE = Coro::State PACKAGE = Coro	1937	MODULE = Coro::State PACKAGE = Coro
1622		1938
1623	BOOT:	1939	BOOT:
1624	{	1940	{
1625	int i;	1941	int i;
1626		1942
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);	1943	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1944	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1945	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1630		1946
1631	coro_current = get_sv ("Coro::current", FALSE);	1947	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1632	SvREADONLY_on (coro_current);	1948	SvREADONLY_on (coro_current);
1633		1949
1634	coro_stash = gv_stashpv ("Coro", TRUE);	1950	coro_stash = gv_stashpv ("Coro", TRUE);
1635		1951
1636	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1952	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1637	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1953	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1638	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1954	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1639	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1955	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1642		1958
1643	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1959	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1644	coro_ready[i] = newAV ();	1960	coro_ready[i] = newAV ();
1645		1961
1646	{	1962	{
1647	SV *sv = perl_get_sv("Coro::API", 1);	1963	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1964	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1648		1965
1649	coroapi.schedule = api_schedule;	1966	coroapi.schedule = api_schedule;
1650	coroapi.cede = api_cede;	1967	coroapi.cede = api_cede;
1651	coroapi.cede_notself = api_cede_notself;	1968	coroapi.cede_notself = api_cede_notself;
1652	coroapi.ready = api_ready;	1969	coroapi.ready = api_ready;
…		…
1665	PROTOTYPE: $	1982	PROTOTYPE: $
1666	CODE:	1983	CODE:
1667	SvREFCNT_dec (SvRV (coro_current));	1984	SvREFCNT_dec (SvRV (coro_current));
1668	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1985	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1669		1986
		1987	void
		1988	_set_readyhook (SV *hook)
		1989	PROTOTYPE: $
		1990	CODE:
		1991	LOCK;
		1992	SvREFCNT_dec (coro_readyhook);
		1993	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1994	UNLOCK;
		1995
1670	int	1996	int
1671	prio (Coro::State coro, int newprio = 0)	1997	prio (Coro::State coro, int newprio = 0)
1672	ALIAS:	1998	ALIAS:
1673	nice = 1	1999	nice = 1
1674	CODE:	2000	CODE:
…		…
1716	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2042	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1717	AV *invoke_av;	2043	AV *invoke_av;
1718	int i, len;	2044	int i, len;
1719		2045
1720	if (!invoke)	2046	if (!invoke)
		2047	{
		2048	SV *old = PL_diehook;
		2049	PL_diehook = 0;
		2050	SvREFCNT_dec (old);
1721	croak ("\3terminate\2\n");	2051	croak ("\3async_pool terminate\2\n");
		2052	}
1722		2053
1723	SvREFCNT_dec (coro->saved_deffh);	2054	SvREFCNT_dec (coro->saved_deffh);
1724	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2055	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1725		2056
1726	hv_store (hv, "desc", sizeof ("desc") - 1,	2057	hv_store (hv, "desc", sizeof ("desc") - 1,
…		…
1752	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2083	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1753	coro->saved_deffh = 0;	2084	coro->saved_deffh = 0;
1754		2085
1755	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2086	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1756	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2087	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2088	{
		2089	SV *old = PL_diehook;
		2090	PL_diehook = 0;
		2091	SvREFCNT_dec (old);
1757	croak ("\3terminate\2\n");	2092	croak ("\3async_pool terminate\2\n");
		2093	}
1758		2094
1759	av_clear (GvAV (PL_defgv));	2095	av_clear (GvAV (PL_defgv));
1760	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2096	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1761	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2097	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1762		2098
…		…
1765	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2101	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1766	api_trace (coro_current, 0);	2102	api_trace (coro_current, 0);
1767		2103
1768	av_push (av_async_pool, newSVsv (coro_current));	2104	av_push (av_async_pool, newSVsv (coro_current));
1769	}	2105	}
		2106
		2107	#if 0
		2108
		2109	void
		2110	_generator_call (...)
		2111	PROTOTYPE: @
		2112	PPCODE:
		2113	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2114	xxxx
		2115	abort ();
		2116
		2117	SV *
		2118	gensub (SV *sub, ...)
		2119	PROTOTYPE: &;@
		2120	CODE:
		2121	{
		2122	struct coro *coro;
		2123	MAGIC *mg;
		2124	CV *xcv;
		2125	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2126	int i;
		2127
		2128	CvGV (ncv) = CvGV (cv);
		2129	CvFILE (ncv) = CvFILE (cv);
		2130
		2131	Newz (0, coro, 1, struct coro);
		2132	coro->args = newAV ();
		2133	coro->flags = CF_NEW;
		2134
		2135	av_extend (coro->args, items - 1);
		2136	for (i = 1; i < items; i++)
		2137	av_push (coro->args, newSVsv (ST (i)));
		2138
		2139	CvISXSUB_on (ncv);
		2140	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2141
		2142	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2143
		2144	CvXSUB (ncv) = CvXSUB (xcv);
		2145	CvANON_on (ncv);
		2146
		2147	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2148	RETVAL = newRV_noinc ((SV *)ncv);
		2149	}
		2150	OUTPUT:
		2151	RETVAL
		2152
		2153	#endif
1770		2154
1771		2155
1772	MODULE = Coro::State PACKAGE = Coro::AIO	2156	MODULE = Coro::State PACKAGE = Coro::AIO
1773		2157
1774	SV *	2158	SV *
…		…
1801	PL_laststype = data->laststype;	2185	PL_laststype = data->laststype;
1802	PL_laststatval = data->laststatval;	2186	PL_laststatval = data->laststatval;
1803	PL_statcache = data->statcache;	2187	PL_statcache = data->statcache;
1804	}	2188	}
1805		2189
		2190
		2191	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2192
		2193	BOOT:
		2194	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2195
		2196	SV *
		2197	_schedule (...)
		2198	PROTOTYPE: @
		2199	CODE:
		2200	{
		2201	static int incede;
		2202
		2203	api_cede_notself ();
		2204
		2205	++incede;
		2206	while (coro_nready >= incede && api_cede ())
		2207	;
		2208
		2209	sv_setsv (sv_activity, &PL_sv_undef);
		2210	if (coro_nready >= incede)
		2211	{
		2212	PUSHMARK (SP);
		2213	PUTBACK;
		2214	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2215	SPAGAIN;
		2216	}
		2217
		2218	--incede;
		2219	}
		2220

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