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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.185 by root, Thu Oct 4 19:35:08 2007 UTC vs.
Revision 1.249 by root, Tue Sep 30 17:12:35 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"
		9	#include "perliol.h"
8		10
9	#include "patchlevel.h"	11	#include "patchlevel.h"
10		12
11	#include <stdio.h>	13	#include <stdio.h>
12	#include <errno.h>	14	#include <errno.h>
13	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
14		25
15	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
16	# include <unistd.h>	27	# include <unistd.h>
17	# include <sys/mman.h>	28	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
72	# endif	83	# endif
73	#endif	84	#endif
74		85
		86	/* 5.8.8 */
		87	#ifndef GV_NOTQUAL
		88	# define GV_NOTQUAL 0
		89	#endif
		90	#ifndef newSV
		91	# define newSV(l) NEWSV(0,l)
		92	#endif
		93
		94	/* 5.11 */
		95	#ifndef CxHASARGS
		96	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		97	#endif
		98
75	/* 5.8.7 */	99	/* 5.8.7 */
76	#ifndef SvRV_set	100	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	101	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	102	#endif
79		103
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	122	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		123
100	#if __GNUC__ >= 3	124	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	125	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	126	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		127	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	128	#else
104	# define attribute(x)	129	# define attribute(x)
105	# define BARRIER	130	# define BARRIER
		131	# define expect(expr,value) (expr)
106	#endif	132	#endif
		133
		134	#define expect_false(expr) expect ((expr) != 0, 0)
		135	#define expect_true(expr) expect ((expr) != 0, 1)
107		136
108	#define NOINLINE attribute ((noinline))	137	#define NOINLINE attribute ((noinline))
109		138
110	#include "CoroAPI.h"	139	#include "CoroAPI.h"
111		140
…		…
119	#endif	148	#endif
120		149
121	/* helper storage struct for Coro::AIO */	150	/* helper storage struct for Coro::AIO */
122	struct io_state	151	struct io_state
123	{	152	{
		153	AV *res;
124	int errorno;	154	int errorno;
125	I32 laststype;	155	I32 laststype;
126	int laststatval;	156	int laststatval;
127	Stat_t statcache;	157	Stat_t statcache;
128	};	158	};
129		159
		160	static double (*nvtime)(); /* so why doesn't it take void? */
		161
130	static size_t coro_stacksize = CORO_STACKSIZE;	162	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	163	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	164	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	165	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	166	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	167	static volatile SV *coro_mortal; /* will be freed after next transfer */
136		168
137	static GV *irsgv; /* $/ */	169	static GV *irsgv; /* $/ */
		170	static GV *stdoutgv; /* *STDOUT */
		171	static SV *rv_diehook;
		172	static SV *rv_warnhook;
		173	static HV *hv_sig; /* %SIG */
138		174
139	/* async_pool helper stuff */	175	/* async_pool helper stuff */
140	static SV *sv_pool_rss;	176	static SV *sv_pool_rss;
141	static SV *sv_pool_size;	177	static SV *sv_pool_size;
142	static AV *av_async_pool;	178	static AV *av_async_pool;
		179
		180	/* Coro::AnyEvent */
		181	static SV *sv_activity;
143		182
144	static struct coro_cctx *cctx_first;	183	static struct coro_cctx *cctx_first;
145	static int cctx_count, cctx_idle;	184	static int cctx_count, cctx_idle;
146		185
147	enum {	186	enum {
…		…
178	CF_READY = 0x0002, /* coroutine is ready */	217	CF_READY = 0x0002, /* coroutine is ready */
179	CF_NEW = 0x0004, /* has never been switched to */	218	CF_NEW = 0x0004, /* has never been switched to */
180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	219	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181	};	220	};
182		221
		222	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		223	typedef struct {
		224	SV *defsv;
		225	AV *defav;
		226	SV *errsv;
		227	SV *irsgv;
		228	#define VAR(name,type) type name;
		229	# include "state.h"
		230	#undef VAR
		231	} perl_slots;
		232
		233	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		234
183	/* this is a structure representing a perl-level coroutine */	235	/* this is a structure representing a perl-level coroutine */
184	struct coro {	236	struct coro {
185	/* the c coroutine allocated to this perl coroutine, if any */	237	/* the c coroutine allocated to this perl coroutine, if any */
186	coro_cctx *cctx;	238	coro_cctx *cctx;
187		239
		240	/* process data */
		241	AV *mainstack;
		242	perl_slots *slot; /* basically the saved sp */
		243
188	/* data associated with this coroutine (initial args) */	244	AV *args; /* data associated with this coroutine (initial args) */
189	AV *args;	245	int refcnt; /* coroutines are refcounted, yes */
190	int refcnt;
191	int flags; /* CF_ flags */	246	int flags; /* CF_ flags */
192		247	HV *hv; /* the perl hash associated with this coro, if any */
193	/* optionally saved, might be zero */
194	AV *defav; /* @_ */
195	SV *defsv; /* $_ */
196	SV *errsv; /* $@ */
197	SV *deffh; /* default filehandle */
198	SV *irssv; /* $/ */
199	SV *irssv_sv; /* real $/ cache */
200
201	#define VAR(name,type) type name;
202	# include "state.h"
203	#undef VAR
204		248
205	/* statistics */	249	/* statistics */
206	int usecount; /* number of transfers to this coro */	250	int usecount; /* number of transfers to this coro */
207		251
208	/* coro process data */	252	/* coro process data */
209	int prio;	253	int prio;
210	//SV *throw;	254	SV *throw; /* exception to be thrown */
211		255
212	/* async_pool */	256	/* async_pool */
213	SV *saved_deffh;	257	SV *saved_deffh;
214		258
215	/* linked list */	259	/* linked list */
216	struct coro *next, *prev;	260	struct coro *next, *prev;
217	HV *hv; /* the perl hash associated with this coro, if any */
218	};	261	};
219		262
220	typedef struct coro *Coro__State;	263	typedef struct coro *Coro__State;
221	typedef struct coro *Coro__State_or_hashref;	264	typedef struct coro *Coro__State_or_hashref;
222		265
…		…
229	#define PRIO_IDLE -3	272	#define PRIO_IDLE -3
230	#define PRIO_MIN -4	273	#define PRIO_MIN -4
231		274
232	/* for Coro.pm */	275	/* for Coro.pm */
233	static SV *coro_current;	276	static SV *coro_current;
		277	static SV *coro_readyhook;
234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	278	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
235	static int coro_nready;	279	static int coro_nready;
236	static struct coro *coro_first;	280	static struct coro *coro_first;
237		281
238	/** lowlevel stuff **********************************************************/	282	/** lowlevel stuff **********************************************************/
239		283
		284	static SV *
		285	coro_get_sv (pTHX_ const char *name, int create)
		286	{
		287	#if PERL_VERSION_ATLEAST (5,10,0)
		288	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		289	get_sv (name, create);
		290	#endif
		291	return get_sv (name, create);
		292	}
		293
		294	static AV *
		295	coro_get_av (pTHX_ const char *name, int create)
		296	{
		297	#if PERL_VERSION_ATLEAST (5,10,0)
		298	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		299	get_av (name, create);
		300	#endif
		301	return get_av (name, create);
		302	}
		303
		304	static HV *
		305	coro_get_hv (pTHX_ const char *name, int create)
		306	{
		307	#if PERL_VERSION_ATLEAST (5,10,0)
		308	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		309	get_hv (name, create);
		310	#endif
		311	return get_hv (name, create);
		312	}
		313
240	static AV *	314	static AV *
241	coro_clone_padlist (pTHX_ CV *cv)	315	coro_clone_padlist (pTHX_ CV *cv)
242	{	316	{
243	AV *padlist = CvPADLIST (cv);	317	AV *padlist = CvPADLIST (cv);
244	AV *newpadlist, *newpad;	318	AV *newpadlist, *newpad;
245		319
246	newpadlist = newAV ();	320	newpadlist = newAV ();
247	AvREAL_off (newpadlist);	321	AvREAL_off (newpadlist);
248	#if PERL_VERSION_ATLEAST (5,9,0)	322	#if PERL_VERSION_ATLEAST (5,10,0)
249	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	323	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
250	#else	324	#else
251	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	325	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
252	#endif	326	#endif
253	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	327	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
254	--AvFILLp (padlist);	328	--AvFILLp (padlist);
255		329
256	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	330	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
257	av_store (newpadlist, 1, (SV *)newpad);	331	av_store (newpadlist, 1, (SV *)newpad);
258		332
259	return newpadlist;	333	return newpadlist;
260	}	334	}
261		335
…		…
291		365
292	/* casting is fun. */	366	/* casting is fun. */
293	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	367	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
294	free_padlist (aTHX_ padlist);	368	free_padlist (aTHX_ padlist);
295		369
296	SvREFCNT_dec (av);	370	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
297		371
298	return 0;	372	return 0;
299	}	373	}
300		374
301	#define PERL_MAGIC_coro PERL_MAGIC_ext	375	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		376	#define CORO_MAGIC_type_state PERL_MAGIC_ext
302		377
303	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	378	static MGVTBL coro_cv_vtbl = {
		379	0, 0, 0, 0,
		380	coro_cv_free
		381	};
304		382
305	#define CORO_MAGIC(cv) \	383	#define CORO_MAGIC(sv,type) \
306	SvMAGIC (cv) \	384	SvMAGIC (sv) \
307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	385	? SvMAGIC (sv)->mg_type == type \
308	? SvMAGIC (cv) \	386	? SvMAGIC (sv) \
309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	387	: mg_find (sv, type) \
310	: 0	388	: 0
		389
		390	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		391	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
311		392
312	static struct coro *	393	static struct coro *
313	SvSTATE_ (pTHX_ SV *coro)	394	SvSTATE_ (pTHX_ SV *coro)
314	{	395	{
315	HV *stash;	396	HV *stash;
316	MAGIC *mg;	397	MAGIC *mg;
317		398
318	if (SvROK (coro))	399	if (SvROK (coro))
319	coro = SvRV (coro);	400	coro = SvRV (coro);
320		401
321	if (SvTYPE (coro) != SVt_PVHV)	402	if (expect_false (SvTYPE (coro) != SVt_PVHV))
322	croak ("Coro::State object required");	403	croak ("Coro::State object required");
323		404
324	stash = SvSTASH (coro);	405	stash = SvSTASH (coro);
325	if (stash != coro_stash && stash != coro_state_stash)	406	if (expect_false (stash != coro_stash && stash != coro_state_stash))
326	{	407	{
327	/* very slow, but rare, check */	408	/* very slow, but rare, check */
328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	409	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329	croak ("Coro::State object required");	410	croak ("Coro::State object required");
330	}	411	}
331		412
332	mg = CORO_MAGIC (coro);	413	mg = CORO_MAGIC_state (coro);
333	return (struct coro *)mg->mg_ptr;	414	return (struct coro *)mg->mg_ptr;
334	}	415	}
335		416
336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	417	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
337		418
338	/* the next two functions merely cache the padlists */	419	/* the next two functions merely cache the padlists */
339	static void	420	static void
340	get_padlist (pTHX_ CV *cv)	421	get_padlist (pTHX_ CV *cv)
341	{	422	{
342	MAGIC *mg = CORO_MAGIC (cv);	423	MAGIC *mg = CORO_MAGIC_cv (cv);
343	AV *av;	424	AV *av;
344		425
345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	426	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	427	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
347	else	428	else
348	{	429	{
349	#if CORO_PREFER_PERL_FUNCTIONS	430	#if CORO_PREFER_PERL_FUNCTIONS
350	/* this is probably cleaner, but also slower? */	431	/* this is probably cleaner? but also slower! */
		432	/* in practise, it seems to be less stable */
351	CV *cp = Perl_cv_clone (cv);	433	CV *cp = Perl_cv_clone (cv);
352	CvPADLIST (cv) = CvPADLIST (cp);	434	CvPADLIST (cv) = CvPADLIST (cp);
353	CvPADLIST (cp) = 0;	435	CvPADLIST (cp) = 0;
354	SvREFCNT_dec (cp);	436	SvREFCNT_dec (cp);
355	#else	437	#else
…		…
359	}	441	}
360		442
361	static void	443	static void
362	put_padlist (pTHX_ CV *cv)	444	put_padlist (pTHX_ CV *cv)
363	{	445	{
364	MAGIC *mg = CORO_MAGIC (cv);	446	MAGIC *mg = CORO_MAGIC_cv (cv);
365	AV *av;	447	AV *av;
366		448
367	if (!mg)	449	if (expect_false (!mg))
368	{	450	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
369	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
370	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
371	mg->mg_virtual = &vtbl_coro;
372	mg->mg_obj = (SV *)newAV ();
373	}
374		451
375	av = (AV *)mg->mg_obj;	452	av = (AV *)mg->mg_obj;
376		453
377	if (AvFILLp (av) >= AvMAX (av))	454	if (expect_false (AvFILLp (av) >= AvMAX (av)))
378	av_extend (av, AvMAX (av) + 1);	455	av_extend (av, AvMAX (av) + 1);
379		456
380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	457	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
381	}	458	}
382		459
383	/** load & save, init *******************************************************/	460	/** load & save, init *******************************************************/
384		461
385	static void	462	static void
386	load_perl (pTHX_ Coro__State c)	463	load_perl (pTHX_ Coro__State c)
387	{	464	{
		465	perl_slots *slot = c->slot;
		466	c->slot = 0;
		467
		468	PL_mainstack = c->mainstack;
		469
		470	GvSV (PL_defgv) = slot->defsv;
		471	GvAV (PL_defgv) = slot->defav;
		472	GvSV (PL_errgv) = slot->errsv;
		473	GvSV (irsgv) = slot->irsgv;
		474
388	#define VAR(name,type) PL_ ## name = c->name;	475	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	476	# include "state.h"
390	#undef VAR	477	#undef VAR
391
392	GvSV (PL_defgv) = c->defsv;
393	GvAV (PL_defgv) = c->defav;
394	GvSV (PL_errgv) = c->errsv;
395	GvSV (irsgv) = c->irssv_sv;
396		478
397	{	479	{
398	dSP;	480	dSP;
		481
399	CV *cv;	482	CV *cv;
400		483
401	/* now do the ugly restore mess */	484	/* now do the ugly restore mess */
402	while ((cv = (CV *)POPs))	485	while (expect_true (cv = (CV *)POPs))
403	{	486	{
404	put_padlist (aTHX_ cv); /* mark this padlist as available */	487	put_padlist (aTHX_ cv); /* mark this padlist as available */
405	CvDEPTH (cv) = PTR2IV (POPs);	488	CvDEPTH (cv) = PTR2IV (POPs);
406	CvPADLIST (cv) = (AV *)POPs;	489	CvPADLIST (cv) = (AV *)POPs;
407	}	490	}
…		…
426		509
427	XPUSHs (Nullsv);	510	XPUSHs (Nullsv);
428	/* this loop was inspired by pp_caller */	511	/* this loop was inspired by pp_caller */
429	for (;;)	512	for (;;)
430	{	513	{
431	while (cxix >= 0)	514	while (expect_true (cxix >= 0))
432	{	515	{
433	PERL_CONTEXT *cx = &ccstk[cxix--];	516	PERL_CONTEXT *cx = &ccstk[cxix--];
434		517
435	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	518	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
436	{	519	{
437	CV *cv = cx->blk_sub.cv;	520	CV *cv = cx->blk_sub.cv;
438		521
439	if (CvDEPTH (cv))	522	if (expect_true (CvDEPTH (cv)))
440	{	523	{
441	EXTEND (SP, 3);	524	EXTEND (SP, 3);
442	PUSHs ((SV *)CvPADLIST (cv));	525	PUSHs ((SV *)CvPADLIST (cv));
443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	526	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
444	PUSHs ((SV *)cv);	527	PUSHs ((SV *)cv);
445		528
446	CvDEPTH (cv) = 0;	529	CvDEPTH (cv) = 0;
447	get_padlist (aTHX_ cv);	530	get_padlist (aTHX_ cv);
448	}	531	}
449	}	532	}
450	}	533	}
451		534
452	if (top_si->si_type == PERLSI_MAIN)	535	if (expect_true (top_si->si_type == PERLSI_MAIN))
453	break;	536	break;
454		537
455	top_si = top_si->si_prev;	538	top_si = top_si->si_prev;
456	ccstk = top_si->si_cxstack;	539	ccstk = top_si->si_cxstack;
457	cxix = top_si->si_cxix;	540	cxix = top_si->si_cxix;
458	}	541	}
459		542
460	PUTBACK;	543	PUTBACK;
461	}	544	}
462		545
		546	/* allocate some space on the context stack for our purposes */
		547	/* we manually unroll here, as usually 2 slots is enough */
		548	if (SLOT_COUNT >= 1) CXINC;
		549	if (SLOT_COUNT >= 2) CXINC;
		550	if (SLOT_COUNT >= 3) CXINC;
		551	{
		552	int i;
		553	for (i = 3; i < SLOT_COUNT; ++i)
		554	CXINC;
		555	}
		556	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		557
		558	c->mainstack = PL_mainstack;
		559
		560	{
		561	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		562
463	c->defav = GvAV (PL_defgv);	563	slot->defav = GvAV (PL_defgv);
464	c->defsv = DEFSV;	564	slot->defsv = DEFSV;
465	c->errsv = ERRSV;	565	slot->errsv = ERRSV;
466	c->irssv_sv = GvSV (irsgv);	566	slot->irsgv = GvSV (irsgv);
467		567
468	#define VAR(name,type)c->name = PL_ ## name;	568	#define VAR(name,type) slot->name = PL_ ## name;
469	# include "state.h"	569	# include "state.h"
470	#undef VAR	570	#undef VAR
		571	}
471	}	572	}
472		573
473	/*	574	/*
474	* allocate various perl stacks. This is an exact copy	575	* allocate various perl stacks. This is an exact copy
475	* of perl.c:init_stacks, except that it uses less memory	576	* of perl.c:init_stacks, except that it uses less memory
…		…
480	# define coro_init_stacks init_stacks	581	# define coro_init_stacks init_stacks
481	#else	582	#else
482	static void	583	static void
483	coro_init_stacks (pTHX)	584	coro_init_stacks (pTHX)
484	{	585	{
485	PL_curstackinfo = new_stackinfo(64, 6);	586	PL_curstackinfo = new_stackinfo(32, 8);
486	PL_curstackinfo->si_type = PERLSI_MAIN;	587	PL_curstackinfo->si_type = PERLSI_MAIN;
487	PL_curstack = PL_curstackinfo->si_stack;	588	PL_curstack = PL_curstackinfo->si_stack;
488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	589	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
489		590
490	PL_stack_base = AvARRAY(PL_curstack);	591	PL_stack_base = AvARRAY(PL_curstack);
491	PL_stack_sp = PL_stack_base;	592	PL_stack_sp = PL_stack_base;
492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	593	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
493		594
494	New(50,PL_tmps_stack,64,SV*);	595	New(50,PL_tmps_stack,32,SV*);
495	PL_tmps_floor = -1;	596	PL_tmps_floor = -1;
496	PL_tmps_ix = -1;	597	PL_tmps_ix = -1;
497	PL_tmps_max = 64;	598	PL_tmps_max = 32;
498		599
499	New(54,PL_markstack,16,I32);	600	New(54,PL_markstack,16,I32);
500	PL_markstack_ptr = PL_markstack;	601	PL_markstack_ptr = PL_markstack;
501	PL_markstack_max = PL_markstack + 16;	602	PL_markstack_max = PL_markstack + 16;
502		603
503	#ifdef SET_MARK_OFFSET	604	#ifdef SET_MARK_OFFSET
504	SET_MARK_OFFSET;	605	SET_MARK_OFFSET;
505	#endif	606	#endif
506		607
507	New(54,PL_scopestack,16,I32);	608	New(54,PL_scopestack,8,I32);
508	PL_scopestack_ix = 0;	609	PL_scopestack_ix = 0;
509	PL_scopestack_max = 16;	610	PL_scopestack_max = 8;
510		611
511	New(54,PL_savestack,64,ANY);	612	New(54,PL_savestack,24,ANY);
512	PL_savestack_ix = 0;	613	PL_savestack_ix = 0;
513	PL_savestack_max = 64;	614	PL_savestack_max = 24;
514		615
515	#if !PERL_VERSION_ATLEAST (5,9,0)	616	#if !PERL_VERSION_ATLEAST (5,10,0)
516	New(54,PL_retstack,4,OP*);	617	New(54,PL_retstack,4,OP*);
517	PL_retstack_ix = 0;	618	PL_retstack_ix = 0;
518	PL_retstack_max = 4;	619	PL_retstack_max = 4;
519	#endif	620	#endif
520	}	621	}
…		…
543		644
544	Safefree (PL_tmps_stack);	645	Safefree (PL_tmps_stack);
545	Safefree (PL_markstack);	646	Safefree (PL_markstack);
546	Safefree (PL_scopestack);	647	Safefree (PL_scopestack);
547	Safefree (PL_savestack);	648	Safefree (PL_savestack);
548	#if !PERL_VERSION_ATLEAST (5,9,0)	649	#if !PERL_VERSION_ATLEAST (5,10,0)
549	Safefree (PL_retstack);	650	Safefree (PL_retstack);
550	#endif	651	#endif
551	}	652	}
552		653
553	static size_t	654	static size_t
…		…
555	{	656	{
556	size_t rss = sizeof (*coro);	657	size_t rss = sizeof (*coro);
557		658
558	if (coro->mainstack)	659	if (coro->mainstack)
559	{	660	{
		661	perl_slots tmp_slot;
		662	perl_slots *slot;
		663
560	if (coro->flags & CF_RUNNING)	664	if (coro->flags & CF_RUNNING)
561	{	665	{
		666	slot = &tmp_slot;
		667
562	#define VAR(name,type)coro->name = PL_ ## name;	668	#define VAR(name,type) slot->name = PL_ ## name;
563	# include "state.h"	669	# include "state.h"
564	#undef VAR	670	#undef VAR
565	}	671	}
		672	else
		673	slot = coro->slot;
566		674
		675	if (slot)
		676	{
567	rss += sizeof (coro->curstackinfo);	677	rss += sizeof (slot->curstackinfo);
568	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	678	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
570	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	679	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
571	rss += coro->tmps_max * sizeof (SV *);	680	rss += slot->tmps_max * sizeof (SV *);
572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	681	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
573	rss += coro->scopestack_max * sizeof (I32);	682	rss += slot->scopestack_max * sizeof (I32);
574	rss += coro->savestack_max * sizeof (ANY);	683	rss += slot->savestack_max * sizeof (ANY);
575		684
576	#if !PERL_VERSION_ATLEAST (5,9,0)	685	#if !PERL_VERSION_ATLEAST (5,10,0)
577	rss += coro->retstack_max * sizeof (OP *);	686	rss += slot->retstack_max * sizeof (OP *);
578	#endif	687	#endif
		688	}
579	}	689	}
580		690
581	return rss;	691	return rss;
582	}	692	}
583		693
584	/** coroutine stack handling ************************************************/	694	/** coroutine stack handling ************************************************/
		695
		696	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		697	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		698	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		699
		700	/* apparently < 5.8.8 */
		701	#ifndef MgPV_nolen_const
		702	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		703	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		704	(const char*)(mg)->mg_ptr)
		705	#endif
		706
		707	/*
		708	* This overrides the default magic get method of %SIG elements.
		709	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		710	* and instead of tryign to save and restore the hash elements, we just provide
		711	* readback here.
		712	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		713	* not expecting this to actually change the hook. This is a potential problem
		714	* when a schedule happens then, but we ignore this.
		715	*/
		716	static int
		717	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		718	{
		719	const char *s = MgPV_nolen_const (mg);
		720
		721	if (*s == '_')
		722	{
		723	SV **svp = 0;
		724
		725	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		726	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		727
		728	if (svp)
		729	{
		730	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		731	return 0;
		732	}
		733	}
		734
		735	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		736	}
		737
		738	static int
		739	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		740	{
		741	const char *s = MgPV_nolen_const (mg);
		742
		743	if (*s == '_')
		744	{
		745	SV **svp = 0;
		746
		747	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		748	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		749
		750	if (svp)
		751	{
		752	SV *old = *svp;
		753	*svp = 0;
		754	SvREFCNT_dec (old);
		755	return 0;
		756	}
		757	}
		758
		759	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		760	}
		761
		762	static int
		763	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		764	{
		765	const char *s = MgPV_nolen_const (mg);
		766
		767	if (*s == '_')
		768	{
		769	SV **svp = 0;
		770
		771	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		772	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		773
		774	if (svp)
		775	{
		776	SV *old = *svp;
		777	*svp = newSVsv (sv);
		778	SvREFCNT_dec (old);
		779	return 0;
		780	}
		781	}
		782
		783	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		784	}
585		785
586	static void	786	static void
587	coro_setup (pTHX_ struct coro *coro)	787	coro_setup (pTHX_ struct coro *coro)
588	{	788	{
589	/*	789	/*
…		…
594	PL_runops = RUNOPS_DEFAULT;	794	PL_runops = RUNOPS_DEFAULT;
595	PL_curcop = &PL_compiling;	795	PL_curcop = &PL_compiling;
596	PL_in_eval = EVAL_NULL;	796	PL_in_eval = EVAL_NULL;
597	PL_comppad = 0;	797	PL_comppad = 0;
598	PL_curpm = 0;	798	PL_curpm = 0;
		799	PL_curpad = 0;
599	PL_localizing = 0;	800	PL_localizing = 0;
600	PL_dirty = 0;	801	PL_dirty = 0;
601	PL_restartop = 0;	802	PL_restartop = 0;
		803	#if PERL_VERSION_ATLEAST (5,10,0)
		804	PL_parser = 0;
		805	#endif
		806
		807	/* recreate the die/warn hooks */
		808	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		809	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
602		810
603	GvSV (PL_defgv) = NEWSV (0, 0);	811	GvSV (PL_defgv) = newSV (0);
604	GvAV (PL_defgv) = coro->args; coro->args = 0;	812	GvAV (PL_defgv) = coro->args; coro->args = 0;
605	GvSV (PL_errgv) = NEWSV (0, 0);	813	GvSV (PL_errgv) = newSV (0);
606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	814	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
607	PL_rs = newSVsv (GvSV (irsgv));	815	PL_rs = newSVsv (GvSV (irsgv));
608		816	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
609	{
610	IO *io = newIO ();
611	PL_defoutgv = newGVgen ("Coro");
612	GvIOp(PL_defoutgv) = io;
613	IoTYPE (io) = IoTYPE_WRONLY;
614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
615	IoFLAGS (io) |= IOf_FLUSH;
616	}
617		817
618	{	818	{
619	dSP;	819	dSP;
620	LOGOP myop;	820	LOGOP myop;
621		821
622	Zero (&myop, 1, LOGOP);	822	Zero (&myop, 1, LOGOP);
623	myop.op_next = Nullop;	823	myop.op_next = Nullop;
624	myop.op_flags = OPf_WANT_VOID;	824	myop.op_flags = OPf_WANT_VOID;
625		825
626	PUSHMARK (SP);	826	PUSHMARK (SP);
627	XPUSHs (av_shift (GvAV (PL_defgv)));	827	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
628	PUTBACK;	828	PUTBACK;
629	PL_op = (OP *)&myop;	829	PL_op = (OP *)&myop;
630	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	830	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
631	SPAGAIN;	831	SPAGAIN;
632	}	832	}
633		833
634	ENTER; /* necessary e.g. for dounwind */	834	/* this newly created coroutine might be run on an existing cctx which most
		835	* likely was suspended in set_stacklevel, called from entersub.
		836	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		837	* so we ENTER here for symmetry
		838	*/
		839	ENTER;
635	}	840	}
636		841
637	static void	842	static void
638	coro_destroy (pTHX_ struct coro *coro)	843	coro_destroy (pTHX_ struct coro *coro)
639	{	844	{
…		…
659	SvREFCNT_dec (GvSV (PL_errgv));	864	SvREFCNT_dec (GvSV (PL_errgv));
660	SvREFCNT_dec (PL_defoutgv);	865	SvREFCNT_dec (PL_defoutgv);
661	SvREFCNT_dec (PL_rs);	866	SvREFCNT_dec (PL_rs);
662	SvREFCNT_dec (GvSV (irsgv));	867	SvREFCNT_dec (GvSV (irsgv));
663		868
		869	SvREFCNT_dec (PL_diehook);
		870	SvREFCNT_dec (PL_warnhook);
		871
664	SvREFCNT_dec (coro->saved_deffh);	872	SvREFCNT_dec (coro->saved_deffh);
665	//SvREFCNT_dec (coro->throw);	873	SvREFCNT_dec (coro->throw);
666		874
667	coro_destroy_stacks (aTHX);	875	coro_destroy_stacks (aTHX);
668	}	876	}
669		877
670	static void	878	static void
671	free_coro_mortal (pTHX)	879	free_coro_mortal (pTHX)
672	{	880	{
673	if (coro_mortal)	881	if (expect_true (coro_mortal))
674	{	882	{
675	SvREFCNT_dec (coro_mortal);	883	SvREFCNT_dec (coro_mortal);
676	coro_mortal = 0;	884	coro_mortal = 0;
677	}	885	}
678	}	886	}
…		…
707	bot = PL_stack_base + cx->blk_oldsp + 1;	915	bot = PL_stack_base + cx->blk_oldsp + 1;
708	top = cx->blk_gimme == G_ARRAY ? SP + 1	916	top = cx->blk_gimme == G_ARRAY ? SP + 1
709	: cx->blk_gimme == G_SCALAR ? bot + 1	917	: cx->blk_gimme == G_SCALAR ? bot + 1
710	: bot;	918	: bot;
711		919
		920	av_extend (av, top - bot);
712	while (bot < top)	921	while (bot < top)
713	av_push (av, SvREFCNT_inc (*bot++));	922	av_push (av, SvREFCNT_inc_NN (*bot++));
714		923
715	PL_runops = RUNOPS_DEFAULT;	924	PL_runops = RUNOPS_DEFAULT;
716	ENTER;	925	ENTER;
717	SAVETMPS;	926	SAVETMPS;
718	EXTEND (SP, 3);	927	EXTEND (SP, 3);
…		…
756	SAVETMPS;	965	SAVETMPS;
757	EXTEND (SP, 3);	966	EXTEND (SP, 3);
758	PUSHMARK (SP);	967	PUSHMARK (SP);
759	PUSHs (&PL_sv_yes);	968	PUSHs (&PL_sv_yes);
760	PUSHs (fullname);	969	PUSHs (fullname);
761	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	970	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
762	PUTBACK;	971	PUTBACK;
763	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	972	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
764	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	973	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
765	SPAGAIN;	974	SPAGAIN;
766	FREETMPS;	975	FREETMPS;
…		…
802		1011
803	/* inject a fake call to Coro::State::_cctx_init into the execution */	1012	/* inject a fake call to Coro::State::_cctx_init into the execution */
804	/* _cctx_init should be careful, as it could be called at almost any time */	1013	/* _cctx_init should be careful, as it could be called at almost any time */
805	/* during execution of a perl program */	1014	/* during execution of a perl program */
806	static void NOINLINE	1015	static void NOINLINE
807	prepare_cctx (pTHX_ coro_cctx *cctx)	1016	cctx_prepare (pTHX_ coro_cctx *cctx)
808	{	1017	{
809	dSP;	1018	dSP;
810	LOGOP myop;	1019	LOGOP myop;
811		1020
812	PL_top_env = &PL_start_env;	1021	PL_top_env = &PL_start_env;
…		…
830		1039
831	/*	1040	/*
832	* this is a _very_ stripped down perl interpreter ;)	1041	* this is a _very_ stripped down perl interpreter ;)
833	*/	1042	*/
834	static void	1043	static void
835	coro_run (void *arg)	1044	cctx_run (void *arg)
836	{	1045	{
837	dTHX;	1046	dTHX;
838		1047
839	/* coro_run is the alternative tail of transfer(), so unlock here. */	1048	/* cctx_run is the alternative tail of transfer(), so unlock here. */
840	UNLOCK;	1049	UNLOCK;
841		1050
842	/* we now skip the entersub that lead to transfer() */	1051	/* we now skip the entersub that lead to transfer() */
843	PL_op = PL_op->op_next;	1052	PL_op = PL_op->op_next;
844		1053
845	/* inject a fake subroutine call to cctx_init */	1054	/* inject a fake subroutine call to cctx_init */
846	prepare_cctx (aTHX_ (coro_cctx *)arg);	1055	cctx_prepare (aTHX_ (coro_cctx *)arg);
847		1056
848	/* somebody or something will hit me for both perl_run and PL_restartop */	1057	/* somebody or something will hit me for both perl_run and PL_restartop */
849	PL_restartop = PL_op;	1058	PL_restartop = PL_op;
850	perl_run (PL_curinterp);	1059	perl_run (PL_curinterp);
851		1060
…		…
870	++cctx_count;	1079	++cctx_count;
871		1080
872	Newz (0, cctx, 1, coro_cctx);	1081	Newz (0, cctx, 1, coro_cctx);
873		1082
874	#if HAVE_MMAP	1083	#if HAVE_MMAP
875
876	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1084	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
877	/* mmap supposedly does allocate-on-write for us */	1085	/* mmap supposedly does allocate-on-write for us */
878	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1086	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
879		1087
880	if (cctx->sptr != (void *)-1)	1088	if (cctx->sptr != (void *)-1)
…		…
901	stack_start = cctx->sptr;	1109	stack_start = cctx->sptr;
902	stack_size = cctx->ssize;	1110	stack_size = cctx->ssize;
903	}	1111	}
904		1112
905	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1113	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
906	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1114	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
907		1115
908	return cctx;	1116	return cctx;
909	}	1117	}
910		1118
911	static void	1119	static void
…		…
928	Safefree (cctx->sptr);	1136	Safefree (cctx->sptr);
929		1137
930	Safefree (cctx);	1138	Safefree (cctx);
931	}	1139	}
932		1140
		1141	/* wether this cctx should be destructed */
		1142	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1143
933	static coro_cctx *	1144	static coro_cctx *
934	cctx_get (pTHX)	1145	cctx_get (pTHX)
935	{	1146	{
936	while (cctx_first)	1147	while (expect_true (cctx_first))
937	{	1148	{
938	coro_cctx *cctx = cctx_first;	1149	coro_cctx *cctx = cctx_first;
939	cctx_first = cctx->next;	1150	cctx_first = cctx->next;
940	--cctx_idle;	1151	--cctx_idle;
941		1152
942	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1153	if (expect_true (!CCTX_EXPIRED (cctx)))
943	return cctx;	1154	return cctx;
944		1155
945	cctx_destroy (cctx);	1156	cctx_destroy (cctx);
946	}	1157	}
947		1158
…		…
950		1161
951	static void	1162	static void
952	cctx_put (coro_cctx *cctx)	1163	cctx_put (coro_cctx *cctx)
953	{	1164	{
954	/* free another cctx if overlimit */	1165	/* free another cctx if overlimit */
955	if (cctx_idle >= MAX_IDLE_CCTX)	1166	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
956	{	1167	{
957	coro_cctx *first = cctx_first;	1168	coro_cctx *first = cctx_first;
958	cctx_first = first->next;	1169	cctx_first = first->next;
959	--cctx_idle;	1170	--cctx_idle;
960		1171
…		…
966	cctx_first = cctx;	1177	cctx_first = cctx;
967	}	1178	}
968		1179
969	/** coroutine switching *****************************************************/	1180	/** coroutine switching *****************************************************/
970		1181
971	static void NOINLINE	1182	static void
972	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1183	transfer_check (pTHX_ struct coro *prev, struct coro *next)
973	{	1184	{
974	if (prev != next)	1185	if (expect_true (prev != next))
975	{	1186	{
976	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1187	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
977	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1188	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
978		1189
979	if (next->flags & CF_RUNNING)	1190	if (expect_false (next->flags & CF_RUNNING))
980	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1191	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
981		1192
982	if (next->flags & CF_DESTROYED)	1193	if (expect_false (next->flags & CF_DESTROYED))
983	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1194	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
984		1195
		1196	#if !PERL_VERSION_ATLEAST (5,10,0)
985	if (PL_lex_state != LEX_NOTPARSING)	1197	if (expect_false (PL_lex_state != LEX_NOTPARSING))
986	croak ("Coro::State::transfer called while parsing, but this is not supported");	1198	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1199	#endif
987	}	1200	}
988	}	1201	}
989		1202
990	/* always use the TRANSFER macro */	1203	/* always use the TRANSFER macro */
991	static void NOINLINE	1204	static void NOINLINE
992	transfer (pTHX_ struct coro *prev, struct coro *next)	1205	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
993	{	1206	{
994	dSTACKLEVEL;	1207	dSTACKLEVEL;
		1208	static volatile int has_throw;
995		1209
996	/* sometimes transfer is only called to set idle_sp */	1210	/* sometimes transfer is only called to set idle_sp */
997	if (!next)	1211	if (expect_false (!next))
998	{	1212	{
999	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1213	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1000	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1214	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1001	}	1215	}
1002	else if (prev != next)	1216	else if (expect_true (prev != next))
1003	{	1217	{
1004	coro_cctx *prev__cctx;	1218	coro_cctx *prev__cctx;
1005		1219
1006	if (prev->flags & CF_NEW)	1220	if (expect_false (prev->flags & CF_NEW))
1007	{	1221	{
1008	/* create a new empty context */	1222	/* create a new empty context */
1009	Newz (0, prev->cctx, 1, coro_cctx);	1223	Newz (0, prev->cctx, 1, coro_cctx);
1010	prev->flags &= ~CF_NEW;	1224	prev->flags &= ~CF_NEW;
1011	prev->flags |= CF_RUNNING;	1225	prev->flags |= CF_RUNNING;
…		…
1014	prev->flags &= ~CF_RUNNING;	1228	prev->flags &= ~CF_RUNNING;
1015	next->flags |= CF_RUNNING;	1229	next->flags |= CF_RUNNING;
1016		1230
1017	LOCK;	1231	LOCK;
1018		1232
		1233	/* first get rid of the old state */
		1234	save_perl (aTHX_ prev);
		1235
1019	if (next->flags & CF_NEW)	1236	if (expect_false (next->flags & CF_NEW))
1020	{	1237	{
1021	/* need to start coroutine */	1238	/* need to start coroutine */
1022	next->flags &= ~CF_NEW;	1239	next->flags &= ~CF_NEW;
1023	/* first get rid of the old state */
1024	save_perl (aTHX_ prev);
1025	/* setup coroutine call */	1240	/* setup coroutine call */
1026	coro_setup (aTHX_ next);	1241	coro_setup (aTHX_ next);
1027	}	1242	}
1028	else	1243	else
1029	{
1030	/* coroutine already started */
1031	save_perl (aTHX_ prev);
1032	load_perl (aTHX_ next);	1244	load_perl (aTHX_ next);
1033	}
1034		1245
1035	prev__cctx = prev->cctx;	1246	prev__cctx = prev->cctx;
1036		1247
1037	/* possibly "free" the cctx */	1248	/* possibly "free" the cctx */
1038	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1249	if (expect_true (
		1250	prev__cctx->idle_sp == STACKLEVEL
		1251	&& !(prev__cctx->flags & CC_TRACE)
		1252	&& !force_cctx
		1253	))
1039	{	1254	{
1040	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1255	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1041	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1256	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1042		1257
1043	prev->cctx = 0;	1258	prev->cctx = 0;
1044		1259
		1260	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1261	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1262	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1263	if (!next->cctx)
		1264	next->cctx = cctx_get (aTHX);
		1265
1045	cctx_put (prev__cctx);	1266	cctx_put (prev__cctx);
1046	}	1267	}
1047		1268
1048	++next->usecount;	1269	++next->usecount;
1049		1270
1050	if (!next->cctx)	1271	if (expect_true (!next->cctx))
1051	next->cctx = cctx_get (aTHX);	1272	next->cctx = cctx_get (aTHX);
1052		1273
		1274	has_throw = !!next->throw;
		1275
1053	if (prev__cctx != next->cctx)	1276	if (expect_false (prev__cctx != next->cctx))
1054	{	1277	{
1055	prev__cctx->top_env = PL_top_env;	1278	prev__cctx->top_env = PL_top_env;
1056	PL_top_env = next->cctx->top_env;	1279	PL_top_env = next->cctx->top_env;
1057	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1280	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1058	}	1281	}
1059		1282
1060	free_coro_mortal (aTHX);	1283	free_coro_mortal (aTHX);
1061	UNLOCK;	1284	UNLOCK;
		1285
		1286	if (expect_false (has_throw))
		1287	{
		1288	struct coro *coro = SvSTATE (coro_current);
		1289
		1290	if (coro->throw)
		1291	{
		1292	SV *exception = coro->throw;
		1293	coro->throw = 0;
		1294	sv_setsv (ERRSV, exception);
		1295	croak (0);
		1296	}
		1297	}
1062	}	1298	}
1063	}	1299	}
1064		1300
1065	struct transfer_args	1301	struct transfer_args
1066	{	1302	{
1067	struct coro *prev, *next;	1303	struct coro *prev, *next;
1068	};	1304	};
1069		1305
1070	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1306	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1071	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1307	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1072		1308
1073	/** high level stuff ********************************************************/	1309	/** high level stuff ********************************************************/
1074		1310
1075	static int	1311	static int
…		…
1101	save_perl (aTHX_ &temp);	1337	save_perl (aTHX_ &temp);
1102	load_perl (aTHX_ coro);	1338	load_perl (aTHX_ coro);
1103		1339
1104	coro_destroy (aTHX_ coro);	1340	coro_destroy (aTHX_ coro);
1105		1341
1106	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1342	load_perl (aTHX_ &temp);
1107		1343
1108	coro->mainstack = 0;	1344	coro->slot = 0;
1109	}	1345	}
1110		1346
1111	cctx_destroy (coro->cctx);	1347	cctx_destroy (coro->cctx);
1112	SvREFCNT_dec (coro->args);	1348	SvREFCNT_dec (coro->args);
1113		1349
…		…
1169	{	1405	{
1170	dTHX;	1406	dTHX;
1171	struct transfer_args ta;	1407	struct transfer_args ta;
1172		1408
1173	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1409	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1174	TRANSFER (ta);	1410	TRANSFER (ta, 1);
1175	}	1411	}
1176		1412
1177	/** Coro ********************************************************************/	1413	/** Coro ********************************************************************/
1178		1414
1179	static void	1415	static void
…		…
1181	{	1417	{
1182	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1418	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1183	}	1419	}
1184		1420
1185	static SV *	1421	static SV *
1186	coro_deq (pTHX_ int min_prio)	1422	coro_deq (pTHX)
1187	{	1423	{
1188	int prio = PRIO_MAX - PRIO_MIN;	1424	int prio;
1189		1425
1190	min_prio -= PRIO_MIN;
1191	if (min_prio < 0)
1192	min_prio = 0;
1193
1194	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1426	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1195	if (AvFILLp (coro_ready [prio]) >= 0)	1427	if (AvFILLp (coro_ready [prio]) >= 0)
1196	return av_shift (coro_ready [prio]);	1428	return av_shift (coro_ready [prio]);
1197		1429
1198	return 0;	1430	return 0;
1199	}	1431	}
…		…
1201	static int	1433	static int
1202	api_ready (SV *coro_sv)	1434	api_ready (SV *coro_sv)
1203	{	1435	{
1204	dTHX;	1436	dTHX;
1205	struct coro *coro;	1437	struct coro *coro;
		1438	SV *sv_hook;
		1439	void (*xs_hook)(void);
1206		1440
1207	if (SvROK (coro_sv))	1441	if (SvROK (coro_sv))
1208	coro_sv = SvRV (coro_sv);	1442	coro_sv = SvRV (coro_sv);
1209		1443
1210	coro = SvSTATE (coro_sv);	1444	coro = SvSTATE (coro_sv);
…		…
1213	return 0;	1447	return 0;
1214		1448
1215	coro->flags |= CF_READY;	1449	coro->flags |= CF_READY;
1216		1450
1217	LOCK;	1451	LOCK;
		1452
		1453	sv_hook = coro_nready ? 0 : coro_readyhook;
		1454	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1455
1218	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1456	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1219	++coro_nready;	1457	++coro_nready;
		1458
1220	UNLOCK;	1459	UNLOCK;
		1460
		1461	if (sv_hook)
		1462	{
		1463	dSP;
		1464
		1465	ENTER;
		1466	SAVETMPS;
		1467
		1468	PUSHMARK (SP);
		1469	PUTBACK;
		1470	call_sv (sv_hook, G_DISCARD);
		1471	SPAGAIN;
		1472
		1473	FREETMPS;
		1474	LEAVE;
		1475	}
		1476
		1477	if (xs_hook)
		1478	xs_hook ();
1221		1479
1222	return 1;	1480	return 1;
1223	}	1481	}
1224		1482
1225	static int	1483	static int
…		…
1235	SV *prev_sv, *next_sv;	1493	SV *prev_sv, *next_sv;
1236		1494
1237	for (;;)	1495	for (;;)
1238	{	1496	{
1239	LOCK;	1497	LOCK;
1240	next_sv = coro_deq (aTHX_ PRIO_MIN);	1498	next_sv = coro_deq (aTHX);
1241		1499
1242	/* nothing to schedule: call the idle handler */	1500	/* nothing to schedule: call the idle handler */
1243	if (!next_sv)	1501	if (expect_false (!next_sv))
1244	{	1502	{
1245	dSP;	1503	dSP;
1246	UNLOCK;	1504	UNLOCK;
1247		1505
1248	ENTER;	1506	ENTER;
1249	SAVETMPS;	1507	SAVETMPS;
1250		1508
1251	PUSHMARK (SP);	1509	PUSHMARK (SP);
1252	PUTBACK;	1510	PUTBACK;
1253	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1511	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1512	SPAGAIN;
1254		1513
1255	FREETMPS;	1514	FREETMPS;
1256	LEAVE;	1515	LEAVE;
1257	continue;	1516	continue;
1258	}	1517	}
1259		1518
1260	ta->next = SvSTATE (next_sv);	1519	ta->next = SvSTATE (next_sv);
1261		1520
1262	/* cannot transfer to destroyed coros, skip and look for next */	1521	/* cannot transfer to destroyed coros, skip and look for next */
1263	if (ta->next->flags & CF_DESTROYED)	1522	if (expect_false (ta->next->flags & CF_DESTROYED))
1264	{	1523	{
1265	UNLOCK;	1524	UNLOCK;
1266	SvREFCNT_dec (next_sv);	1525	SvREFCNT_dec (next_sv);
1267	/* coro_nready is already taken care of by destroy */	1526	/* coro_nready is already taken care of by destroy */
1268	continue;	1527	continue;
…		…
1313	{	1572	{
1314	dTHX;	1573	dTHX;
1315	struct transfer_args ta;	1574	struct transfer_args ta;
1316		1575
1317	prepare_schedule (aTHX_ &ta);	1576	prepare_schedule (aTHX_ &ta);
1318	TRANSFER (ta);	1577	TRANSFER (ta, 1);
1319	}	1578	}
1320		1579
1321	static int	1580	static int
1322	api_cede (void)	1581	api_cede (void)
1323	{	1582	{
1324	dTHX;	1583	dTHX;
1325	struct transfer_args ta;	1584	struct transfer_args ta;
1326		1585
1327	prepare_cede (aTHX_ &ta);	1586	prepare_cede (aTHX_ &ta);
1328		1587
1329	if (ta.prev != ta.next)	1588	if (expect_true (ta.prev != ta.next))
1330	{	1589	{
1331	TRANSFER (ta);	1590	TRANSFER (ta, 1);
1332	return 1;	1591	return 1;
1333	}	1592	}
1334	else	1593	else
1335	return 0;	1594	return 0;
1336	}	1595	}
…		…
1341	dTHX;	1600	dTHX;
1342	struct transfer_args ta;	1601	struct transfer_args ta;
1343		1602
1344	if (prepare_cede_notself (aTHX_ &ta))	1603	if (prepare_cede_notself (aTHX_ &ta))
1345	{	1604	{
1346	TRANSFER (ta);	1605	TRANSFER (ta, 1);
1347	return 1;	1606	return 1;
1348	}	1607	}
1349	else	1608	else
1350	return 0;	1609	return 0;
1351	}	1610	}
…		…
1370	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1629	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1371		1630
1372	if (coro->flags & CF_RUNNING)	1631	if (coro->flags & CF_RUNNING)
1373	PL_runops = RUNOPS_DEFAULT;	1632	PL_runops = RUNOPS_DEFAULT;
1374	else	1633	else
1375	coro->runops = RUNOPS_DEFAULT;	1634	coro->slot->runops = RUNOPS_DEFAULT;
		1635	}
		1636	}
		1637
		1638	static int
		1639	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1640	{
		1641	AV *padlist;
		1642	AV *av = (AV *)mg->mg_obj;
		1643
		1644	abort ();
		1645
		1646	return 0;
		1647	}
		1648
		1649	static MGVTBL coro_gensub_vtbl = {
		1650	0, 0, 0, 0,
		1651	coro_gensub_free
		1652	};
		1653
		1654	/*****************************************************************************/
		1655	/* PerlIO::cede */
		1656
		1657	typedef struct
		1658	{
		1659	PerlIOBuf base;
		1660	NV next, every;
		1661	} PerlIOCede;
		1662
		1663	static IV
		1664	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1665	{
		1666	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1667
		1668	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1669	self->next = nvtime () + self->every;
		1670
		1671	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1672	}
		1673
		1674	static SV *
		1675	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1676	{
		1677	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1678
		1679	return newSVnv (self->every);
		1680	}
		1681
		1682	static IV
		1683	PerlIOCede_flush (pTHX_ PerlIO *f)
		1684	{
		1685	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1686	double now = nvtime ();
		1687
		1688	if (now >= self->next)
1376	}	1689	{
		1690	api_cede ();
		1691	self->next = now + self->every;
		1692	}
		1693
		1694	return PerlIOBuf_flush (aTHX_ f);
1377	}	1695	}
		1696
		1697	static PerlIO_funcs PerlIO_cede =
		1698	{
		1699	sizeof(PerlIO_funcs),
		1700	"cede",
		1701	sizeof(PerlIOCede),
		1702	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1703	PerlIOCede_pushed,
		1704	PerlIOBuf_popped,
		1705	PerlIOBuf_open,
		1706	PerlIOBase_binmode,
		1707	PerlIOCede_getarg,
		1708	PerlIOBase_fileno,
		1709	PerlIOBuf_dup,
		1710	PerlIOBuf_read,
		1711	PerlIOBuf_unread,
		1712	PerlIOBuf_write,
		1713	PerlIOBuf_seek,
		1714	PerlIOBuf_tell,
		1715	PerlIOBuf_close,
		1716	PerlIOCede_flush,
		1717	PerlIOBuf_fill,
		1718	PerlIOBase_eof,
		1719	PerlIOBase_error,
		1720	PerlIOBase_clearerr,
		1721	PerlIOBase_setlinebuf,
		1722	PerlIOBuf_get_base,
		1723	PerlIOBuf_bufsiz,
		1724	PerlIOBuf_get_ptr,
		1725	PerlIOBuf_get_cnt,
		1726	PerlIOBuf_set_ptrcnt,
		1727	};
		1728
1378		1729
1379	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1730	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1380		1731
1381	PROTOTYPES: DISABLE	1732	PROTOTYPES: DISABLE
1382		1733
…		…
1385	#ifdef USE_ITHREADS	1736	#ifdef USE_ITHREADS
1386	MUTEX_INIT (&coro_mutex);	1737	MUTEX_INIT (&coro_mutex);
1387	#endif	1738	#endif
1388	BOOT_PAGESIZE;	1739	BOOT_PAGESIZE;
1389		1740
1390	irsgv = gv_fetchpv ("/", 1, SVt_PV);	1741	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1742	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1743
		1744	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1745	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1746	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1747
		1748	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1749	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1750	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1391		1751
1392	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1752	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1393		1753
1394	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1754	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1395	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1755	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1400	main_top_env = PL_top_env;	1760	main_top_env = PL_top_env;
1401		1761
1402	while (main_top_env->je_prev)	1762	while (main_top_env->je_prev)
1403	main_top_env = main_top_env->je_prev;	1763	main_top_env = main_top_env->je_prev;
1404		1764
1405	coroapi.ver = CORO_API_VERSION;	1765	coroapi.ver = CORO_API_VERSION;
		1766	coroapi.rev = CORO_API_REVISION;
1406	coroapi.transfer = api_transfer;	1767	coroapi.transfer = api_transfer;
		1768
		1769	{
		1770	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1771
		1772	if (!svp) croak ("Time::HiRes is required");
		1773	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1774
		1775	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1776	}
1407		1777
1408	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1778	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1409	}	1779	}
1410		1780
1411	SV *	1781	SV *
1412	new (char *klass, ...)	1782	new (char *klass, ...)
1413	CODE:	1783	CODE:
1414	{	1784	{
1415	struct coro *coro;	1785	struct coro *coro;
		1786	MAGIC *mg;
1416	HV *hv;	1787	HV *hv;
1417	int i;	1788	int i;
1418		1789
1419	Newz (0, coro, 1, struct coro);	1790	Newz (0, coro, 1, struct coro);
1420	coro->args = newAV ();	1791	coro->args = newAV ();
…		…
1423	if (coro_first) coro_first->prev = coro;	1794	if (coro_first) coro_first->prev = coro;
1424	coro->next = coro_first;	1795	coro->next = coro_first;
1425	coro_first = coro;	1796	coro_first = coro;
1426		1797
1427	coro->hv = hv = newHV ();	1798	coro->hv = hv = newHV ();
1428	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1799	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1800	mg->mg_flags |= MGf_DUP;
1429	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1801	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1430		1802
		1803	av_extend (coro->args, items - 1);
1431	for (i = 1; i < items; i++)	1804	for (i = 1; i < items; i++)
1432	av_push (coro->args, newSVsv (ST (i)));	1805	av_push (coro->args, newSVsv (ST (i)));
1433	}	1806	}
1434	OUTPUT:	1807	OUTPUT:
1435	RETVAL	1808	RETVAL
…		…
1446	Coro::cede_notself = 4	1819	Coro::cede_notself = 4
1447	CODE:	1820	CODE:
1448	{	1821	{
1449	struct transfer_args ta;	1822	struct transfer_args ta;
1450		1823
		1824	PUTBACK;
1451	switch (ix)	1825	switch (ix)
1452	{	1826	{
1453	case 0:	1827	case 0:
1454	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1828	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1455	ta.next = 0;	1829	ta.next = 0;
…		…
1474	if (!prepare_cede_notself (aTHX_ &ta))	1848	if (!prepare_cede_notself (aTHX_ &ta))
1475	XSRETURN_EMPTY;	1849	XSRETURN_EMPTY;
1476		1850
1477	break;	1851	break;
1478	}	1852	}
		1853	SPAGAIN;
1479		1854
1480	BARRIER;	1855	BARRIER;
		1856	PUTBACK;
1481	TRANSFER (ta);	1857	TRANSFER (ta, 0);
1482		1858	SPAGAIN; /* might be the sp of a different coroutine now */
1483	if (GIMME_V != G_VOID && ta.next != ta.prev)	1859	/* be extra careful not to ever do anything after TRANSFER */
1484	XSRETURN_YES;
1485	}	1860	}
1486		1861
1487	bool	1862	bool
1488	_destroy (SV *coro_sv)	1863	_destroy (SV *coro_sv)
1489	CODE:	1864	CODE:
1490	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1865	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1491	OUTPUT:	1866	OUTPUT:
1492	RETVAL	1867	RETVAL
1493		1868
1494	void	1869	void
1495	_exit (code)	1870	_exit (int code)
1496	int code
1497	PROTOTYPE: $	1871	PROTOTYPE: $
1498	CODE:	1872	CODE:
1499	_exit (code);	1873	_exit (code);
1500		1874
1501	int	1875	int
…		…
1535	call (Coro::State coro, SV *coderef)	1909	call (Coro::State coro, SV *coderef)
1536	ALIAS:	1910	ALIAS:
1537	eval = 1	1911	eval = 1
1538	CODE:	1912	CODE:
1539	{	1913	{
1540	if (coro->mainstack)	1914	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1541	{	1915	{
1542	struct coro temp;	1916	struct coro temp;
1543	Zero (&temp, 1, struct coro);
1544		1917
1545	if (!(coro->flags & CF_RUNNING))	1918	if (!(coro->flags & CF_RUNNING))
1546	{	1919	{
		1920	PUTBACK;
1547	save_perl (aTHX_ &temp);	1921	save_perl (aTHX_ &temp);
1548	load_perl (aTHX_ coro);	1922	load_perl (aTHX_ coro);
1549	}	1923	}
1550		1924
1551	{	1925	{
1552	dSP;	1926	dSP;
1553	ENTER;	1927	ENTER;
1554	SAVETMPS;	1928	SAVETMPS;
		1929	PUTBACK;
		1930	PUSHSTACK;
1555	PUSHMARK (SP);	1931	PUSHMARK (SP);
1556	PUTBACK;	1932
1557	if (ix)	1933	if (ix)
1558	eval_sv (coderef, 0);	1934	eval_sv (coderef, 0);
1559	else	1935	else
1560	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1936	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1937
		1938	POPSTACK;
1561	SPAGAIN;	1939	SPAGAIN;
1562	FREETMPS;	1940	FREETMPS;
1563	LEAVE;	1941	LEAVE;
1564	PUTBACK;	1942	PUTBACK;
1565	}	1943	}
1566		1944
1567	if (!(coro->flags & CF_RUNNING))	1945	if (!(coro->flags & CF_RUNNING))
1568	{	1946	{
1569	save_perl (aTHX_ coro);	1947	save_perl (aTHX_ coro);
1570	load_perl (aTHX_ &temp);	1948	load_perl (aTHX_ &temp);
		1949	SPAGAIN;
1571	}	1950	}
1572	}	1951	}
1573	}	1952	}
1574		1953
1575	SV *	1954	SV *
…		…
1587		1966
1588	void	1967	void
1589	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1968	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1590		1969
1591	SV *	1970	SV *
1592	has_stack (Coro::State coro)	1971	has_cctx (Coro::State coro)
1593	PROTOTYPE: $	1972	PROTOTYPE: $
1594	CODE:	1973	CODE:
1595	RETVAL = boolSV (!!coro->cctx);	1974	RETVAL = boolSV (!!coro->cctx);
1596	OUTPUT:	1975	OUTPUT:
1597	RETVAL	1976	RETVAL
…		…
1616	case 1: RETVAL = coro->usecount; break;	1995	case 1: RETVAL = coro->usecount; break;
1617	}	1996	}
1618	OUTPUT:	1997	OUTPUT:
1619	RETVAL	1998	RETVAL
1620		1999
		2000	void
		2001	force_cctx ()
		2002	CODE:
		2003	struct coro *coro = SvSTATE (coro_current);
		2004	coro->cctx->idle_sp = 0;
		2005
		2006	void
		2007	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2008	PROTOTYPE: $;$
		2009	CODE:
		2010	SvREFCNT_dec (self->throw);
		2011	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2012
		2013	void
		2014	swap_defsv (Coro::State self)
		2015	PROTOTYPE: $
		2016	ALIAS:
		2017	swap_defav = 1
		2018	CODE:
		2019	if (!self->slot)
		2020	croak ("cannot swap state with coroutine that has no saved state");
		2021	else
		2022	{
		2023	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2024	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2025
		2026	SV *tmp = *src; *src = *dst; *dst = tmp;
		2027	}
1621		2028
1622	MODULE = Coro::State PACKAGE = Coro	2029	MODULE = Coro::State PACKAGE = Coro
1623		2030
1624	BOOT:	2031	BOOT:
1625	{	2032	{
1626	int i;	2033	int i;
1627		2034
1628	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1629	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1630	av_async_pool = get_av ("Coro::async_pool", TRUE);	2035	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2036	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2037	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1631		2038
1632	coro_current = get_sv ("Coro::current", FALSE);	2039	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1633	SvREADONLY_on (coro_current);	2040	SvREADONLY_on (coro_current);
1634		2041
1635	coro_stash = gv_stashpv ("Coro", TRUE);	2042	coro_stash = gv_stashpv ("Coro", TRUE);
1636		2043
1637	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2044	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1638	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2045	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1639	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2046	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1640	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2047	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1643		2050
1644	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2051	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1645	coro_ready[i] = newAV ();	2052	coro_ready[i] = newAV ();
1646		2053
1647	{	2054	{
1648	SV *sv = perl_get_sv("Coro::API", 1);	2055	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2056	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1649		2057
1650	coroapi.schedule = api_schedule;	2058	coroapi.schedule = api_schedule;
1651	coroapi.cede = api_cede;	2059	coroapi.cede = api_cede;
1652	coroapi.cede_notself = api_cede_notself;	2060	coroapi.cede_notself = api_cede_notself;
1653	coroapi.ready = api_ready;	2061	coroapi.ready = api_ready;
…		…
1664	void	2072	void
1665	_set_current (SV *current)	2073	_set_current (SV *current)
1666	PROTOTYPE: $	2074	PROTOTYPE: $
1667	CODE:	2075	CODE:
1668	SvREFCNT_dec (SvRV (coro_current));	2076	SvREFCNT_dec (SvRV (coro_current));
1669	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2077	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2078
		2079	void
		2080	_set_readyhook (SV *hook)
		2081	PROTOTYPE: $
		2082	CODE:
		2083	LOCK;
		2084	SvREFCNT_dec (coro_readyhook);
		2085	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2086	UNLOCK;
1670		2087
1671	int	2088	int
1672	prio (Coro::State coro, int newprio = 0)	2089	prio (Coro::State coro, int newprio = 0)
1673	ALIAS:	2090	ALIAS:
1674	nice = 1	2091	nice = 1
…		…
1717	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2134	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1718	AV *invoke_av;	2135	AV *invoke_av;
1719	int i, len;	2136	int i, len;
1720		2137
1721	if (!invoke)	2138	if (!invoke)
		2139	{
		2140	SV *old = PL_diehook;
		2141	PL_diehook = 0;
		2142	SvREFCNT_dec (old);
1722	croak ("\3terminate\2\n");	2143	croak ("\3async_pool terminate\2\n");
		2144	}
1723		2145
1724	SvREFCNT_dec (coro->saved_deffh);	2146	SvREFCNT_dec (coro->saved_deffh);
1725	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2147	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1726		2148
1727	hv_store (hv, "desc", sizeof ("desc") - 1,	2149	hv_store (hv, "desc", sizeof ("desc") - 1,
1728	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2150	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1729		2151
1730	invoke_av = (AV *)SvRV (invoke);	2152	invoke_av = (AV *)SvRV (invoke);
…		…
1734		2156
1735	if (len > 0)	2157	if (len > 0)
1736	{	2158	{
1737	av_fill (defav, len - 1);	2159	av_fill (defav, len - 1);
1738	for (i = 0; i < len; ++i)	2160	for (i = 0; i < len; ++i)
1739	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2161	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1740	}	2162	}
1741		2163
1742	SvREFCNT_dec (invoke);	2164	SvREFCNT_dec (invoke);
1743	}	2165	}
1744		2166
…		…
1753	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2175	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1754	coro->saved_deffh = 0;	2176	coro->saved_deffh = 0;
1755		2177
1756	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2178	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1757	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2179	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2180	{
		2181	SV *old = PL_diehook;
		2182	PL_diehook = 0;
		2183	SvREFCNT_dec (old);
1758	croak ("\3terminate\2\n");	2184	croak ("\3async_pool terminate\2\n");
		2185	}
1759		2186
1760	av_clear (GvAV (PL_defgv));	2187	av_clear (GvAV (PL_defgv));
1761	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2188	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1762	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2189	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1763		2190
…		…
1767	api_trace (coro_current, 0);	2194	api_trace (coro_current, 0);
1768		2195
1769	av_push (av_async_pool, newSVsv (coro_current));	2196	av_push (av_async_pool, newSVsv (coro_current));
1770	}	2197	}
1771		2198
		2199	#if 0
		2200
		2201	void
		2202	_generator_call (...)
		2203	PROTOTYPE: @
		2204	PPCODE:
		2205	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2206	xxxx
		2207	abort ();
		2208
		2209	SV *
		2210	gensub (SV *sub, ...)
		2211	PROTOTYPE: &;@
		2212	CODE:
		2213	{
		2214	struct coro *coro;
		2215	MAGIC *mg;
		2216	CV *xcv;
		2217	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2218	int i;
		2219
		2220	CvGV (ncv) = CvGV (cv);
		2221	CvFILE (ncv) = CvFILE (cv);
		2222
		2223	Newz (0, coro, 1, struct coro);
		2224	coro->args = newAV ();
		2225	coro->flags = CF_NEW;
		2226
		2227	av_extend (coro->args, items - 1);
		2228	for (i = 1; i < items; i++)
		2229	av_push (coro->args, newSVsv (ST (i)));
		2230
		2231	CvISXSUB_on (ncv);
		2232	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2233
		2234	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2235
		2236	CvXSUB (ncv) = CvXSUB (xcv);
		2237	CvANON_on (ncv);
		2238
		2239	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2240	RETVAL = newRV_noinc ((SV *)ncv);
		2241	}
		2242	OUTPUT:
		2243	RETVAL
		2244
		2245	#endif
		2246
1772		2247
1773	MODULE = Coro::State PACKAGE = Coro::AIO	2248	MODULE = Coro::State PACKAGE = Coro::AIO
1774		2249
1775	SV *	2250	void
1776	_get_state ()	2251	_get_state (SV *self)
1777	CODE:	2252	PPCODE:
1778	{	2253	{
1779	struct io_state *data;	2254	AV *defav = GvAV (PL_defgv);
1780		2255	AV *av = newAV ();
		2256	int i;
1781	RETVAL = newSV (sizeof (struct io_state));	2257	SV *data_sv = newSV (sizeof (struct io_state));
1782	data = (struct io_state *)SvPVX (RETVAL);	2258	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1783	SvCUR_set (RETVAL, sizeof (struct io_state));	2259	SvCUR_set (data_sv, sizeof (struct io_state));
1784	SvPOK_only (RETVAL);	2260	SvPOK_only (data_sv);
1785		2261
1786	data->errorno = errno;	2262	data->errorno = errno;
1787	data->laststype = PL_laststype;	2263	data->laststype = PL_laststype;
1788	data->laststatval = PL_laststatval;	2264	data->laststatval = PL_laststatval;
1789	data->statcache = PL_statcache;	2265	data->statcache = PL_statcache;
		2266
		2267	av_extend (av, AvFILLp (defav) + 1 + 1);
		2268
		2269	for (i = 0; i <= AvFILLp (defav); ++i)
		2270	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2271
		2272	av_push (av, data_sv);
		2273
		2274	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2275
		2276	api_ready (self);
1790	}	2277	}
1791	OUTPUT:
1792	RETVAL
1793		2278
1794	void	2279	void
1795	_set_state (char *data_)	2280	_set_state (SV *state)
1796	PROTOTYPE: $	2281	PROTOTYPE: $
1797	CODE:	2282	PPCODE:
1798	{	2283	{
1799	struct io_state *data = (void *)data_;	2284	AV *av = (AV *)SvRV (state);
		2285	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2286	int i;
1800		2287
1801	errno = data->errorno;	2288	errno = data->errorno;
1802	PL_laststype = data->laststype;	2289	PL_laststype = data->laststype;
1803	PL_laststatval = data->laststatval;	2290	PL_laststatval = data->laststatval;
1804	PL_statcache = data->statcache;	2291	PL_statcache = data->statcache;
1805	}
1806		2292
		2293	EXTEND (SP, AvFILLp (av));
		2294	for (i = 0; i < AvFILLp (av); ++i)
		2295	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2296	}
		2297
		2298
		2299	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2300
		2301	BOOT:
		2302	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2303
		2304	SV *
		2305	_schedule (...)
		2306	PROTOTYPE: @
		2307	CODE:
		2308	{
		2309	static int incede;
		2310
		2311	api_cede_notself ();
		2312
		2313	++incede;
		2314	while (coro_nready >= incede && api_cede ())
		2315	;
		2316
		2317	sv_setsv (sv_activity, &PL_sv_undef);
		2318	if (coro_nready >= incede)
		2319	{
		2320	PUSHMARK (SP);
		2321	PUTBACK;
		2322	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2323	SPAGAIN;
		2324	}
		2325
		2326	--incede;
		2327	}
		2328
		2329
		2330	MODULE = Coro::State PACKAGE = PerlIO::cede
		2331
		2332	BOOT:
		2333	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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