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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.175 by root, Sun Sep 30 13:43:45 2007 UTC vs.
Revision 1.247 by root, Wed Sep 24 21:31:29 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
…		…
125	I32 laststype;	154	I32 laststype;
126	int laststatval;	155	int laststatval;
127	Stat_t statcache;	156	Stat_t statcache;
128	};	157	};
129		158
		159	static double (*nvtime)(); /* so why doesn't it take void? */
		160
130	static size_t coro_stacksize = CORO_STACKSIZE;	161	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	162	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	163	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	164	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	165	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	166	static volatile SV *coro_mortal; /* will be freed after next transfer */
		167
		168	static GV *irsgv; /* $/ */
		169	static GV *stdoutgv; /* *STDOUT */
		170	static SV *rv_diehook;
		171	static SV *rv_warnhook;
		172	static HV *hv_sig; /* %SIG */
136		173
137	/* async_pool helper stuff */	174	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	175	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	176	static SV *sv_pool_size;
140	static AV *av_async_pool;	177	static AV *av_async_pool;
		178
		179	/* Coro::AnyEvent */
		180	static SV *sv_activity;
141		181
142	static struct coro_cctx *cctx_first;	182	static struct coro_cctx *cctx_first;
143	static int cctx_count, cctx_idle;	183	static int cctx_count, cctx_idle;
144		184
145	enum {	185	enum {
…		…
176	CF_READY = 0x0002, /* coroutine is ready */	216	CF_READY = 0x0002, /* coroutine is ready */
177	CF_NEW = 0x0004, /* has never been switched to */	217	CF_NEW = 0x0004, /* has never been switched to */
178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	218	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179	};	219	};
180		220
		221	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		222	typedef struct {
		223	SV *defsv;
		224	AV *defav;
		225	SV *errsv;
		226	SV *irsgv;
		227	#define VAR(name,type) type name;
		228	# include "state.h"
		229	#undef VAR
		230	} perl_slots;
		231
		232	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		233
181	/* this is a structure representing a perl-level coroutine */	234	/* this is a structure representing a perl-level coroutine */
182	struct coro {	235	struct coro {
183	/* the c coroutine allocated to this perl coroutine, if any */	236	/* the c coroutine allocated to this perl coroutine, if any */
184	coro_cctx *cctx;	237	coro_cctx *cctx;
185		238
		239	/* process data */
		240	AV *mainstack;
		241	perl_slots *slot; /* basically the saved sp */
		242
186	/* data associated with this coroutine (initial args) */	243	AV *args; /* data associated with this coroutine (initial args) */
187	AV *args;	244	int refcnt; /* coroutines are refcounted, yes */
188	int refcnt;
189	int save; /* CORO_SAVE flags */
190	int flags; /* CF_ flags */	245	int flags; /* CF_ flags */
191		246	HV *hv; /* the perl hash associated with this coro, if any */
192	/* optionally saved, might be zero */
193	AV *defav; /* @_ */
194	SV *defsv; /* $_ */
195	SV *errsv; /* $@ */
196	GV *deffh; /* default filehandle */
197	SV *irssv; /* $/ */
198	SV *irssv_sv; /* real $/ cache */
199
200	#define VAR(name,type) type name;
201	# include "state.h"
202	#undef VAR
203		247
204	/* statistics */	248	/* statistics */
205	int usecount; /* number of switches to this coro */	249	int usecount; /* number of transfers to this coro */
206		250
207	/* coro process data */	251	/* coro process data */
208	int prio;	252	int prio;
		253	SV *throw; /* exception to be thrown */
		254
		255	/* async_pool */
		256	SV *saved_deffh;
209		257
210	/* linked list */	258	/* linked list */
211	struct coro *next, *prev;	259	struct coro *next, *prev;
212	HV *hv; /* the perl hash associated with this coro, if any */
213	};	260	};
214		261
215	typedef struct coro *Coro__State;	262	typedef struct coro *Coro__State;
216	typedef struct coro *Coro__State_or_hashref;	263	typedef struct coro *Coro__State_or_hashref;
217		264
…		…
224	#define PRIO_IDLE -3	271	#define PRIO_IDLE -3
225	#define PRIO_MIN -4	272	#define PRIO_MIN -4
226		273
227	/* for Coro.pm */	274	/* for Coro.pm */
228	static SV *coro_current;	275	static SV *coro_current;
		276	static SV *coro_readyhook;
229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	277	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
230	static int coro_nready;	278	static int coro_nready;
231	static struct coro *coro_first;	279	static struct coro *coro_first;
232		280
233	/** lowlevel stuff **********************************************************/	281	/** lowlevel stuff **********************************************************/
234		282
		283	static SV *
		284	coro_get_sv (pTHX_ const char *name, int create)
		285	{
		286	#if PERL_VERSION_ATLEAST (5,10,0)
		287	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		288	get_sv (name, create);
		289	#endif
		290	return get_sv (name, create);
		291	}
		292
		293	static AV *
		294	coro_get_av (pTHX_ const char *name, int create)
		295	{
		296	#if PERL_VERSION_ATLEAST (5,10,0)
		297	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		298	get_av (name, create);
		299	#endif
		300	return get_av (name, create);
		301	}
		302
		303	static HV *
		304	coro_get_hv (pTHX_ const char *name, int create)
		305	{
		306	#if PERL_VERSION_ATLEAST (5,10,0)
		307	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		308	get_hv (name, create);
		309	#endif
		310	return get_hv (name, create);
		311	}
		312
235	static AV *	313	static AV *
236	coro_clone_padlist (pTHX_ CV *cv)	314	coro_clone_padlist (pTHX_ CV *cv)
237	{	315	{
238	AV *padlist = CvPADLIST (cv);	316	AV *padlist = CvPADLIST (cv);
239	AV *newpadlist, *newpad;	317	AV *newpadlist, *newpad;
240		318
241	newpadlist = newAV ();	319	newpadlist = newAV ();
242	AvREAL_off (newpadlist);	320	AvREAL_off (newpadlist);
243	#if PERL_VERSION_ATLEAST (5,9,0)	321	#if PERL_VERSION_ATLEAST (5,10,0)
244	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	322	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
245	#else	323	#else
246	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	324	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
247	#endif	325	#endif
248	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	326	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
286		364
287	/* casting is fun. */	365	/* casting is fun. */
288	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	366	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
289	free_padlist (aTHX_ padlist);	367	free_padlist (aTHX_ padlist);
290		368
291	SvREFCNT_dec (av);	369	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
292		370
293	return 0;	371	return 0;
294	}	372	}
295		373
296	#define PERL_MAGIC_coro PERL_MAGIC_ext	374	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		375	#define CORO_MAGIC_type_state PERL_MAGIC_ext
297		376
298	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	377	static MGVTBL coro_cv_vtbl = {
		378	0, 0, 0, 0,
		379	coro_cv_free
		380	};
299		381
300	#define CORO_MAGIC(cv) \	382	#define CORO_MAGIC(sv,type) \
301	SvMAGIC (cv) \	383	SvMAGIC (sv) \
302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	384	? SvMAGIC (sv)->mg_type == type \
303	? SvMAGIC (cv) \	385	? SvMAGIC (sv) \
304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	386	: mg_find (sv, type) \
305	: 0	387	: 0
		388
		389	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		390	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
306		391
307	static struct coro *	392	static struct coro *
308	SvSTATE_ (pTHX_ SV *coro)	393	SvSTATE_ (pTHX_ SV *coro)
309	{	394	{
310	HV *stash;	395	HV *stash;
311	MAGIC *mg;	396	MAGIC *mg;
312		397
313	if (SvROK (coro))	398	if (SvROK (coro))
314	coro = SvRV (coro);	399	coro = SvRV (coro);
315		400
316	if (SvTYPE (coro) != SVt_PVHV)	401	if (expect_false (SvTYPE (coro) != SVt_PVHV))
317	croak ("Coro::State object required");	402	croak ("Coro::State object required");
318		403
319	stash = SvSTASH (coro);	404	stash = SvSTASH (coro);
320	if (stash != coro_stash && stash != coro_state_stash)	405	if (expect_false (stash != coro_stash && stash != coro_state_stash))
321	{	406	{
322	/* very slow, but rare, check */	407	/* very slow, but rare, check */
323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	408	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
324	croak ("Coro::State object required");	409	croak ("Coro::State object required");
325	}	410	}
326		411
327	mg = CORO_MAGIC (coro);	412	mg = CORO_MAGIC_state (coro);
328	return (struct coro *)mg->mg_ptr;	413	return (struct coro *)mg->mg_ptr;
329	}	414	}
330		415
331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	416	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
332		417
333	/* the next two functions merely cache the padlists */	418	/* the next two functions merely cache the padlists */
334	static void	419	static void
335	get_padlist (pTHX_ CV *cv)	420	get_padlist (pTHX_ CV *cv)
336	{	421	{
337	MAGIC *mg = CORO_MAGIC (cv);	422	MAGIC *mg = CORO_MAGIC_cv (cv);
338	AV *av;	423	AV *av;
339		424
340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	425	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	426	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
342	else	427	else
343	{	428	{
344	#if CORO_PREFER_PERL_FUNCTIONS	429	#if CORO_PREFER_PERL_FUNCTIONS
345	/* this is probably cleaner, but also slower? */	430	/* this is probably cleaner? but also slower! */
		431	/* in practise, it seems to be less stable */
346	CV *cp = Perl_cv_clone (cv);	432	CV *cp = Perl_cv_clone (cv);
347	CvPADLIST (cv) = CvPADLIST (cp);	433	CvPADLIST (cv) = CvPADLIST (cp);
348	CvPADLIST (cp) = 0;	434	CvPADLIST (cp) = 0;
349	SvREFCNT_dec (cp);	435	SvREFCNT_dec (cp);
350	#else	436	#else
…		…
354	}	440	}
355		441
356	static void	442	static void
357	put_padlist (pTHX_ CV *cv)	443	put_padlist (pTHX_ CV *cv)
358	{	444	{
359	MAGIC *mg = CORO_MAGIC (cv);	445	MAGIC *mg = CORO_MAGIC_cv (cv);
360	AV *av;	446	AV *av;
361		447
362	if (!mg)	448	if (expect_false (!mg))
363	{	449	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
366	mg->mg_virtual = &vtbl_coro;
367	mg->mg_obj = (SV *)newAV ();
368	}
369		450
370	av = (AV *)mg->mg_obj;	451	av = (AV *)mg->mg_obj;
371		452
372	if (AvFILLp (av) >= AvMAX (av))	453	if (expect_false (AvFILLp (av) >= AvMAX (av)))
373	av_extend (av, AvMAX (av) + 1);	454	av_extend (av, AvMAX (av) + 1);
374		455
375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	456	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
376	}	457	}
377		458
378	/** load & save, init *******************************************************/	459	/** load & save, init *******************************************************/
379
380	#define SB do {
381	#define SE } while (0)
382
383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
384		460
385	static void	461	static void
386	load_perl (pTHX_ Coro__State c)	462	load_perl (pTHX_ Coro__State c)
387	{	463	{
		464	perl_slots *slot = c->slot;
		465	c->slot = 0;
		466
		467	PL_mainstack = c->mainstack;
		468
		469	GvSV (PL_defgv) = slot->defsv;
		470	GvAV (PL_defgv) = slot->defav;
		471	GvSV (PL_errgv) = slot->errsv;
		472	GvSV (irsgv) = slot->irsgv;
		473
388	#define VAR(name,type) PL_ ## name = c->name;	474	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	475	# include "state.h"
390	#undef VAR	476	#undef VAR
391
392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
396
397	if (c->irssv)
398	{
399	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
400	{
401	SvREFCNT_dec (c->irssv);
402	c->irssv = 0;
403	}
404	else
405	{
406	REPLACE_SV (PL_rs, c->irssv);
407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
408	sv_setsv (c->irssv_sv, PL_rs);
409	}
410	}
411		477
412	{	478	{
413	dSP;	479	dSP;
		480
414	CV *cv;	481	CV *cv;
415		482
416	/* now do the ugly restore mess */	483	/* now do the ugly restore mess */
417	while ((cv = (CV *)POPs))	484	while (expect_true (cv = (CV *)POPs))
418	{	485	{
419	put_padlist (aTHX_ cv); /* mark this padlist as available */	486	put_padlist (aTHX_ cv); /* mark this padlist as available */
420	CvDEPTH (cv) = PTR2IV (POPs);	487	CvDEPTH (cv) = PTR2IV (POPs);
421	CvPADLIST (cv) = (AV *)POPs;	488	CvPADLIST (cv) = (AV *)POPs;
422	}	489	}
…		…
441		508
442	XPUSHs (Nullsv);	509	XPUSHs (Nullsv);
443	/* this loop was inspired by pp_caller */	510	/* this loop was inspired by pp_caller */
444	for (;;)	511	for (;;)
445	{	512	{
446	while (cxix >= 0)	513	while (expect_true (cxix >= 0))
447	{	514	{
448	PERL_CONTEXT *cx = &ccstk[cxix--];	515	PERL_CONTEXT *cx = &ccstk[cxix--];
449		516
450	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	517	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
451	{	518	{
452	CV *cv = cx->blk_sub.cv;	519	CV *cv = cx->blk_sub.cv;
453		520
454	if (CvDEPTH (cv))	521	if (expect_true (CvDEPTH (cv)))
455	{	522	{
456	EXTEND (SP, 3);	523	EXTEND (SP, 3);
457	PUSHs ((SV *)CvPADLIST (cv));	524	PUSHs ((SV *)CvPADLIST (cv));
458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	525	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
459	PUSHs ((SV *)cv);	526	PUSHs ((SV *)cv);
460		527
461	CvDEPTH (cv) = 0;	528	CvDEPTH (cv) = 0;
462	get_padlist (aTHX_ cv);	529	get_padlist (aTHX_ cv);
463	}	530	}
464	}	531	}
465	}	532	}
466		533
467	if (top_si->si_type == PERLSI_MAIN)	534	if (expect_true (top_si->si_type == PERLSI_MAIN))
468	break;	535	break;
469		536
470	top_si = top_si->si_prev;	537	top_si = top_si->si_prev;
471	ccstk = top_si->si_cxstack;	538	ccstk = top_si->si_cxstack;
472	cxix = top_si->si_cxix;	539	cxix = top_si->si_cxix;
473	}	540	}
474		541
475	PUTBACK;	542	PUTBACK;
476	}	543	}
477		544
478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	545	/* allocate some space on the context stack for our purposes */
479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	546	/* we manually unroll here, as usually 2 slots is enough */
480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	547	if (SLOT_COUNT >= 1) CXINC;
481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	548	if (SLOT_COUNT >= 2) CXINC;
482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	549	if (SLOT_COUNT >= 3) CXINC;
		550	{
		551	int i;
		552	for (i = 3; i < SLOT_COUNT; ++i)
		553	CXINC;
		554	}
		555	cxstack_ix -= SLOT_COUNT; /* undo allocation */
483		556
		557	c->mainstack = PL_mainstack;
		558
		559	{
		560	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		561
		562	slot->defav = GvAV (PL_defgv);
		563	slot->defsv = DEFSV;
		564	slot->errsv = ERRSV;
		565	slot->irsgv = GvSV (irsgv);
		566
484	#define VAR(name,type)c->name = PL_ ## name;	567	#define VAR(name,type) slot->name = PL_ ## name;
485	# include "state.h"	568	# include "state.h"
486	#undef VAR	569	#undef VAR
		570	}
487	}	571	}
488		572
489	/*	573	/*
490	* allocate various perl stacks. This is an exact copy	574	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	575	* of perl.c:init_stacks, except that it uses less memory
…		…
496	# define coro_init_stacks init_stacks	580	# define coro_init_stacks init_stacks
497	#else	581	#else
498	static void	582	static void
499	coro_init_stacks (pTHX)	583	coro_init_stacks (pTHX)
500	{	584	{
501	PL_curstackinfo = new_stackinfo(64, 6);	585	PL_curstackinfo = new_stackinfo(32, 8);
502	PL_curstackinfo->si_type = PERLSI_MAIN;	586	PL_curstackinfo->si_type = PERLSI_MAIN;
503	PL_curstack = PL_curstackinfo->si_stack;	587	PL_curstack = PL_curstackinfo->si_stack;
504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	588	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505		589
506	PL_stack_base = AvARRAY(PL_curstack);	590	PL_stack_base = AvARRAY(PL_curstack);
507	PL_stack_sp = PL_stack_base;	591	PL_stack_sp = PL_stack_base;
508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	592	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509		593
510	New(50,PL_tmps_stack,64,SV*);	594	New(50,PL_tmps_stack,32,SV*);
511	PL_tmps_floor = -1;	595	PL_tmps_floor = -1;
512	PL_tmps_ix = -1;	596	PL_tmps_ix = -1;
513	PL_tmps_max = 64;	597	PL_tmps_max = 32;
514		598
515	New(54,PL_markstack,16,I32);	599	New(54,PL_markstack,16,I32);
516	PL_markstack_ptr = PL_markstack;	600	PL_markstack_ptr = PL_markstack;
517	PL_markstack_max = PL_markstack + 16;	601	PL_markstack_max = PL_markstack + 16;
518		602
519	#ifdef SET_MARK_OFFSET	603	#ifdef SET_MARK_OFFSET
520	SET_MARK_OFFSET;	604	SET_MARK_OFFSET;
521	#endif	605	#endif
522		606
523	New(54,PL_scopestack,16,I32);	607	New(54,PL_scopestack,8,I32);
524	PL_scopestack_ix = 0;	608	PL_scopestack_ix = 0;
525	PL_scopestack_max = 16;	609	PL_scopestack_max = 8;
526		610
527	New(54,PL_savestack,64,ANY);	611	New(54,PL_savestack,24,ANY);
528	PL_savestack_ix = 0;	612	PL_savestack_ix = 0;
529	PL_savestack_max = 64;	613	PL_savestack_max = 24;
530		614
531	#if !PERL_VERSION_ATLEAST (5,9,0)	615	#if !PERL_VERSION_ATLEAST (5,10,0)
532	New(54,PL_retstack,4,OP*);	616	New(54,PL_retstack,4,OP*);
533	PL_retstack_ix = 0;	617	PL_retstack_ix = 0;
534	PL_retstack_max = 4;	618	PL_retstack_max = 4;
535	#endif	619	#endif
536	}	620	}
…		…
540	* destroy the stacks, the callchain etc...	624	* destroy the stacks, the callchain etc...
541	*/	625	*/
542	static void	626	static void
543	coro_destroy_stacks (pTHX)	627	coro_destroy_stacks (pTHX)
544	{	628	{
545	if (!IN_DESTRUCT)
546	{
547	/* restore all saved variables and stuff */
548	LEAVE_SCOPE (0);
549	assert (PL_tmps_floor == -1);
550
551	/* free all temporaries */
552	FREETMPS;
553	assert (PL_tmps_ix == -1);
554
555	/* unwind all extra stacks */
556	POPSTACK_TO (PL_mainstack);
557
558	/* unwind main stack */
559	dounwind (-1);
560	}
561
562	while (PL_curstackinfo->si_next)	629	while (PL_curstackinfo->si_next)
563	PL_curstackinfo = PL_curstackinfo->si_next;	630	PL_curstackinfo = PL_curstackinfo->si_next;
564		631
565	while (PL_curstackinfo)	632	while (PL_curstackinfo)
566	{	633	{
…		…
576		643
577	Safefree (PL_tmps_stack);	644	Safefree (PL_tmps_stack);
578	Safefree (PL_markstack);	645	Safefree (PL_markstack);
579	Safefree (PL_scopestack);	646	Safefree (PL_scopestack);
580	Safefree (PL_savestack);	647	Safefree (PL_savestack);
581	#if !PERL_VERSION_ATLEAST (5,9,0)	648	#if !PERL_VERSION_ATLEAST (5,10,0)
582	Safefree (PL_retstack);	649	Safefree (PL_retstack);
583	#endif	650	#endif
584	}	651	}
585		652
586	static size_t	653	static size_t
587	coro_rss (pTHX_ struct coro *coro)	654	coro_rss (pTHX_ struct coro *coro)
588	{	655	{
589	size_t rss = sizeof (coro);	656	size_t rss = sizeof (*coro);
590		657
591	if (coro->mainstack)	658	if (coro->mainstack)
592	{	659	{
		660	perl_slots tmp_slot;
		661	perl_slots *slot;
		662
593	if (coro->flags & CF_RUNNING)	663	if (coro->flags & CF_RUNNING)
594	{	664	{
		665	slot = &tmp_slot;
		666
595	#define VAR(name,type)coro->name = PL_ ## name;	667	#define VAR(name,type) slot->name = PL_ ## name;
596	# include "state.h"	668	# include "state.h"
597	#undef VAR	669	#undef VAR
598	}	670	}
		671	else
		672	slot = coro->slot;
599		673
		674	if (slot)
		675	{
600	rss += sizeof (coro->curstackinfo);	676	rss += sizeof (slot->curstackinfo);
601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	677	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	678	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
604	rss += coro->tmps_max * sizeof (SV *);	679	rss += slot->tmps_max * sizeof (SV *);
605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	680	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
606	rss += coro->scopestack_max * sizeof (I32);	681	rss += slot->scopestack_max * sizeof (I32);
607	rss += coro->savestack_max * sizeof (ANY);	682	rss += slot->savestack_max * sizeof (ANY);
608		683
609	#if !PERL_VERSION_ATLEAST (5,9,0)	684	#if !PERL_VERSION_ATLEAST (5,10,0)
610	rss += coro->retstack_max * sizeof (OP *);	685	rss += slot->retstack_max * sizeof (OP *);
611	#endif	686	#endif
		687	}
612	}	688	}
613		689
614	return rss;	690	return rss;
615	}	691	}
616		692
617	/** coroutine stack handling ************************************************/	693	/** coroutine stack handling ************************************************/
618		694
		695	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		696	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		697	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		698
		699	/* apparently < 5.8.8 */
		700	#ifndef MgPV_nolen_const
		701	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		702	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		703	(const char*)(mg)->mg_ptr)
		704	#endif
		705
		706	/*
		707	* This overrides the default magic get method of %SIG elements.
		708	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		709	* and instead of tryign to save and restore the hash elements, we just provide
		710	* readback here.
		711	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		712	* not expecting this to actually change the hook. This is a potential problem
		713	* when a schedule happens then, but we ignore this.
		714	*/
		715	static int
		716	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		717	{
		718	const char *s = MgPV_nolen_const (mg);
		719
		720	if (*s == '_')
		721	{
		722	SV **svp = 0;
		723
		724	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		725	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		726
		727	if (svp)
		728	{
		729	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		730	return 0;
		731	}
		732	}
		733
		734	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		735	}
		736
		737	static int
		738	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		739	{
		740	const char *s = MgPV_nolen_const (mg);
		741
		742	if (*s == '_')
		743	{
		744	SV **svp = 0;
		745
		746	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		747	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		748
		749	if (svp)
		750	{
		751	SV *old = *svp;
		752	*svp = 0;
		753	SvREFCNT_dec (old);
		754	return 0;
		755	}
		756	}
		757
		758	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		759	}
		760
		761	static int
		762	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		763	{
		764	const char *s = MgPV_nolen_const (mg);
		765
		766	if (*s == '_')
		767	{
		768	SV **svp = 0;
		769
		770	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		771	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		772
		773	if (svp)
		774	{
		775	SV *old = *svp;
		776	*svp = newSVsv (sv);
		777	SvREFCNT_dec (old);
		778	return 0;
		779	}
		780	}
		781
		782	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		783	}
		784
619	static void	785	static void
620	setup_coro (pTHX_ struct coro *coro)	786	coro_setup (pTHX_ struct coro *coro)
621	{	787	{
622	/*	788	/*
623	* emulate part of the perl startup here.	789	* emulate part of the perl startup here.
624	*/	790	*/
625	coro_init_stacks (aTHX);	791	coro_init_stacks (aTHX);
…		…
627	PL_runops = RUNOPS_DEFAULT;	793	PL_runops = RUNOPS_DEFAULT;
628	PL_curcop = &PL_compiling;	794	PL_curcop = &PL_compiling;
629	PL_in_eval = EVAL_NULL;	795	PL_in_eval = EVAL_NULL;
630	PL_comppad = 0;	796	PL_comppad = 0;
631	PL_curpm = 0;	797	PL_curpm = 0;
		798	PL_curpad = 0;
632	PL_localizing = 0;	799	PL_localizing = 0;
633	PL_dirty = 0;	800	PL_dirty = 0;
634	PL_restartop = 0;	801	PL_restartop = 0;
		802	#if PERL_VERSION_ATLEAST (5,10,0)
		803	PL_parser = 0;
		804	#endif
		805
		806	/* recreate the die/warn hooks */
		807	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		808	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		809
		810	GvSV (PL_defgv) = newSV (0);
		811	GvAV (PL_defgv) = coro->args; coro->args = 0;
		812	GvSV (PL_errgv) = newSV (0);
		813	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		814	PL_rs = newSVsv (GvSV (irsgv));
		815	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
635		816
636	{	817	{
637	dSP;	818	dSP;
638	LOGOP myop;	819	LOGOP myop;
639		820
640	SvREFCNT_dec (GvAV (PL_defgv));
641	GvAV (PL_defgv) = coro->args; coro->args = 0;
642
643	Zero (&myop, 1, LOGOP);	821	Zero (&myop, 1, LOGOP);
644	myop.op_next = Nullop;	822	myop.op_next = Nullop;
645	myop.op_flags = OPf_WANT_VOID;	823	myop.op_flags = OPf_WANT_VOID;
646		824
647	PUSHMARK (SP);	825	PUSHMARK (SP);
648	XPUSHs (av_shift (GvAV (PL_defgv)));	826	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
649	PUTBACK;	827	PUTBACK;
650	PL_op = (OP *)&myop;	828	PL_op = (OP *)&myop;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	829	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;	830	SPAGAIN;
653	}	831	}
654		832
655	ENTER; /* necessary e.g. for dounwind */	833	/* this newly created coroutine might be run on an existing cctx which most
		834	* likely was suspended in set_stacklevel, called from entersub.
		835	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		836	* so we ENTER here for symmetry
		837	*/
		838	ENTER;
		839	}
		840
		841	static void
		842	coro_destroy (pTHX_ struct coro *coro)
		843	{
		844	if (!IN_DESTRUCT)
		845	{
		846	/* restore all saved variables and stuff */
		847	LEAVE_SCOPE (0);
		848	assert (PL_tmps_floor == -1);
		849
		850	/* free all temporaries */
		851	FREETMPS;
		852	assert (PL_tmps_ix == -1);
		853
		854	/* unwind all extra stacks */
		855	POPSTACK_TO (PL_mainstack);
		856
		857	/* unwind main stack */
		858	dounwind (-1);
		859	}
		860
		861	SvREFCNT_dec (GvSV (PL_defgv));
		862	SvREFCNT_dec (GvAV (PL_defgv));
		863	SvREFCNT_dec (GvSV (PL_errgv));
		864	SvREFCNT_dec (PL_defoutgv);
		865	SvREFCNT_dec (PL_rs);
		866	SvREFCNT_dec (GvSV (irsgv));
		867
		868	SvREFCNT_dec (PL_diehook);
		869	SvREFCNT_dec (PL_warnhook);
		870
		871	SvREFCNT_dec (coro->saved_deffh);
		872	SvREFCNT_dec (coro->throw);
		873
		874	coro_destroy_stacks (aTHX);
656	}	875	}
657		876
658	static void	877	static void
659	free_coro_mortal (pTHX)	878	free_coro_mortal (pTHX)
660	{	879	{
661	if (coro_mortal)	880	if (expect_true (coro_mortal))
662	{	881	{
663	SvREFCNT_dec (coro_mortal);	882	SvREFCNT_dec (coro_mortal);
664	coro_mortal = 0;	883	coro_mortal = 0;
665	}	884	}
666	}	885	}
…		…
695	bot = PL_stack_base + cx->blk_oldsp + 1;	914	bot = PL_stack_base + cx->blk_oldsp + 1;
696	top = cx->blk_gimme == G_ARRAY ? SP + 1	915	top = cx->blk_gimme == G_ARRAY ? SP + 1
697	: cx->blk_gimme == G_SCALAR ? bot + 1	916	: cx->blk_gimme == G_SCALAR ? bot + 1
698	: bot;	917	: bot;
699		918
		919	av_extend (av, top - bot);
700	while (bot < top)	920	while (bot < top)
701	av_push (av, SvREFCNT_inc (*bot++));	921	av_push (av, SvREFCNT_inc (*bot++));
702		922
703	PL_runops = RUNOPS_DEFAULT;	923	PL_runops = RUNOPS_DEFAULT;
704	ENTER;	924	ENTER;
…		…
744	SAVETMPS;	964	SAVETMPS;
745	EXTEND (SP, 3);	965	EXTEND (SP, 3);
746	PUSHMARK (SP);	966	PUSHMARK (SP);
747	PUSHs (&PL_sv_yes);	967	PUSHs (&PL_sv_yes);
748	PUSHs (fullname);	968	PUSHs (fullname);
749	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	969	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
750	PUTBACK;	970	PUTBACK;
751	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	971	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
752	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	972	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
753	SPAGAIN;	973	SPAGAIN;
754	FREETMPS;	974	FREETMPS;
…		…
790		1010
791	/* inject a fake call to Coro::State::_cctx_init into the execution */	1011	/* inject a fake call to Coro::State::_cctx_init into the execution */
792	/* _cctx_init should be careful, as it could be called at almost any time */	1012	/* _cctx_init should be careful, as it could be called at almost any time */
793	/* during execution of a perl program */	1013	/* during execution of a perl program */
794	static void NOINLINE	1014	static void NOINLINE
795	prepare_cctx (pTHX_ coro_cctx *cctx)	1015	cctx_prepare (pTHX_ coro_cctx *cctx)
796	{	1016	{
797	dSP;	1017	dSP;
798	LOGOP myop;	1018	LOGOP myop;
799		1019
800	PL_top_env = &PL_start_env;	1020	PL_top_env = &PL_start_env;
…		…
818		1038
819	/*	1039	/*
820	* this is a _very_ stripped down perl interpreter ;)	1040	* this is a _very_ stripped down perl interpreter ;)
821	*/	1041	*/
822	static void	1042	static void
823	coro_run (void *arg)	1043	cctx_run (void *arg)
824	{	1044	{
825	dTHX;	1045	dTHX;
826		1046
827	/* coro_run is the alternative tail of transfer(), so unlock here. */	1047	/* cctx_run is the alternative tail of transfer(), so unlock here. */
828	UNLOCK;	1048	UNLOCK;
829		1049
830	/* we now skip the entersub that lead to transfer() */	1050	/* we now skip the entersub that lead to transfer() */
831	PL_op = PL_op->op_next;	1051	PL_op = PL_op->op_next;
832		1052
833	/* inject a fake subroutine call to cctx_init */	1053	/* inject a fake subroutine call to cctx_init */
834	prepare_cctx (aTHX_ (coro_cctx *)arg);	1054	cctx_prepare (aTHX_ (coro_cctx *)arg);
835		1055
836	/* somebody or something will hit me for both perl_run and PL_restartop */	1056	/* somebody or something will hit me for both perl_run and PL_restartop */
837	PL_restartop = PL_op;	1057	PL_restartop = PL_op;
838	perl_run (PL_curinterp);	1058	perl_run (PL_curinterp);
839		1059
…		…
858	++cctx_count;	1078	++cctx_count;
859		1079
860	Newz (0, cctx, 1, coro_cctx);	1080	Newz (0, cctx, 1, coro_cctx);
861		1081
862	#if HAVE_MMAP	1082	#if HAVE_MMAP
863
864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1083	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
865	/* mmap supposedly does allocate-on-write for us */	1084	/* mmap supposedly does allocate-on-write for us */
866	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1085	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
867		1086
868	if (cctx->sptr != (void *)-1)	1087	if (cctx->sptr != (void *)-1)
…		…
889	stack_start = cctx->sptr;	1108	stack_start = cctx->sptr;
890	stack_size = cctx->ssize;	1109	stack_size = cctx->ssize;
891	}	1110	}
892		1111
893	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1112	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
894	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1113	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
895		1114
896	return cctx;	1115	return cctx;
897	}	1116	}
898		1117
899	static void	1118	static void
…		…
916	Safefree (cctx->sptr);	1135	Safefree (cctx->sptr);
917		1136
918	Safefree (cctx);	1137	Safefree (cctx);
919	}	1138	}
920		1139
		1140	/* wether this cctx should be destructed */
		1141	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1142
921	static coro_cctx *	1143	static coro_cctx *
922	cctx_get (pTHX)	1144	cctx_get (pTHX)
923	{	1145	{
924	while (cctx_first)	1146	while (expect_true (cctx_first))
925	{	1147	{
926	coro_cctx *cctx = cctx_first;	1148	coro_cctx *cctx = cctx_first;
927	cctx_first = cctx->next;	1149	cctx_first = cctx->next;
928	--cctx_idle;	1150	--cctx_idle;
929		1151
930	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1152	if (expect_true (!CCTX_EXPIRED (cctx)))
931	return cctx;	1153	return cctx;
932		1154
933	cctx_destroy (cctx);	1155	cctx_destroy (cctx);
934	}	1156	}
935		1157
…		…
938		1160
939	static void	1161	static void
940	cctx_put (coro_cctx *cctx)	1162	cctx_put (coro_cctx *cctx)
941	{	1163	{
942	/* free another cctx if overlimit */	1164	/* free another cctx if overlimit */
943	if (cctx_idle >= MAX_IDLE_CCTX)	1165	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
944	{	1166	{
945	coro_cctx *first = cctx_first;	1167	coro_cctx *first = cctx_first;
946	cctx_first = first->next;	1168	cctx_first = first->next;
947	--cctx_idle;	1169	--cctx_idle;
948		1170
…		…
954	cctx_first = cctx;	1176	cctx_first = cctx;
955	}	1177	}
956		1178
957	/** coroutine switching *****************************************************/	1179	/** coroutine switching *****************************************************/
958		1180
959	static void NOINLINE	1181	static void
960	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1182	transfer_check (pTHX_ struct coro *prev, struct coro *next)
961	{	1183	{
962	if (prev != next)	1184	if (expect_true (prev != next))
963	{	1185	{
964	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1186	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
965	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1187	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
966		1188
967	if (next->flags & CF_RUNNING)	1189	if (expect_false (next->flags & CF_RUNNING))
968	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1190	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
969		1191
970	if (next->flags & CF_DESTROYED)	1192	if (expect_false (next->flags & CF_DESTROYED))
971	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1193	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
972		1194
		1195	#if !PERL_VERSION_ATLEAST (5,10,0)
973	if (PL_lex_state != LEX_NOTPARSING)	1196	if (expect_false (PL_lex_state != LEX_NOTPARSING))
974	croak ("Coro::State::transfer called while parsing, but this is not supported");	1197	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1198	#endif
975	}	1199	}
976	}	1200	}
977		1201
978	/* always use the TRANSFER macro */	1202	/* always use the TRANSFER macro */
979	static void NOINLINE	1203	static void NOINLINE
980	transfer (pTHX_ struct coro *prev, struct coro *next)	1204	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
981	{	1205	{
982	dSTACKLEVEL;	1206	dSTACKLEVEL;
		1207	static volatile int has_throw;
983		1208
984	/* sometimes transfer is only called to set idle_sp */	1209	/* sometimes transfer is only called to set idle_sp */
985	if (!next)	1210	if (expect_false (!next))
986	{	1211	{
987	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1212	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
988	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1213	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
989	}	1214	}
990	else if (prev != next)	1215	else if (expect_true (prev != next))
991	{	1216	{
992	coro_cctx *prev__cctx;	1217	coro_cctx *prev__cctx;
993		1218
994	if (prev->flags & CF_NEW)	1219	if (expect_false (prev->flags & CF_NEW))
995	{	1220	{
996	/* create a new empty context */	1221	/* create a new empty context */
997	Newz (0, prev->cctx, 1, coro_cctx);	1222	Newz (0, prev->cctx, 1, coro_cctx);
998	prev->flags &= ~CF_NEW;	1223	prev->flags &= ~CF_NEW;
999	prev->flags |= CF_RUNNING;	1224	prev->flags |= CF_RUNNING;
…		…
1002	prev->flags &= ~CF_RUNNING;	1227	prev->flags &= ~CF_RUNNING;
1003	next->flags |= CF_RUNNING;	1228	next->flags |= CF_RUNNING;
1004		1229
1005	LOCK;	1230	LOCK;
1006		1231
		1232	/* first get rid of the old state */
		1233	save_perl (aTHX_ prev);
		1234
1007	if (next->flags & CF_NEW)	1235	if (expect_false (next->flags & CF_NEW))
1008	{	1236	{
1009	/* need to start coroutine */	1237	/* need to start coroutine */
1010	next->flags &= ~CF_NEW;	1238	next->flags &= ~CF_NEW;
1011	/* first get rid of the old state */
1012	save_perl (aTHX_ prev);
1013	/* setup coroutine call */	1239	/* setup coroutine call */
1014	setup_coro (aTHX_ next);	1240	coro_setup (aTHX_ next);
1015	}	1241	}
1016	else	1242	else
1017	{
1018	/* coroutine already started */
1019	save_perl (aTHX_ prev);
1020	load_perl (aTHX_ next);	1243	load_perl (aTHX_ next);
1021	}
1022		1244
1023	prev__cctx = prev->cctx;	1245	prev__cctx = prev->cctx;
1024		1246
1025	/* possibly "free" the cctx */	1247	/* possibly "free" the cctx */
1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1248	if (expect_true (
		1249	prev__cctx->idle_sp == STACKLEVEL
		1250	&& !(prev__cctx->flags & CC_TRACE)
		1251	&& !force_cctx
		1252	))
1027	{	1253	{
1028	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1254	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1029	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1255	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1030		1256
1031	prev->cctx = 0;	1257	prev->cctx = 0;
1032		1258
		1259	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1260	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1261	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1262	if (!next->cctx)
		1263	next->cctx = cctx_get (aTHX);
		1264
1033	cctx_put (prev__cctx);	1265	cctx_put (prev__cctx);
1034	}	1266	}
1035		1267
1036	++next->usecount;	1268	++next->usecount;
1037		1269
1038	if (!next->cctx)	1270	if (expect_true (!next->cctx))
1039	next->cctx = cctx_get (aTHX);	1271	next->cctx = cctx_get (aTHX);
1040		1272
		1273	has_throw = !!next->throw;
		1274
1041	if (prev__cctx != next->cctx)	1275	if (expect_false (prev__cctx != next->cctx))
1042	{	1276	{
1043	prev__cctx->top_env = PL_top_env;	1277	prev__cctx->top_env = PL_top_env;
1044	PL_top_env = next->cctx->top_env;	1278	PL_top_env = next->cctx->top_env;
1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1279	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1046	}	1280	}
1047		1281
1048	free_coro_mortal (aTHX);	1282	free_coro_mortal (aTHX);
1049	UNLOCK;	1283	UNLOCK;
		1284
		1285	if (expect_false (has_throw))
		1286	{
		1287	struct coro *coro = SvSTATE (coro_current);
		1288
		1289	if (coro->throw)
		1290	{
		1291	SV *exception = coro->throw;
		1292	coro->throw = 0;
		1293	sv_setsv (ERRSV, exception);
		1294	croak (0);
		1295	}
		1296	}
1050	}	1297	}
1051	}	1298	}
1052		1299
1053	struct transfer_args	1300	struct transfer_args
1054	{	1301	{
1055	struct coro *prev, *next;	1302	struct coro *prev, *next;
1056	};	1303	};
1057		1304
1058	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1305	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1059	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1306	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1060		1307
1061	/** high level stuff ********************************************************/	1308	/** high level stuff ********************************************************/
1062		1309
1063	static int	1310	static int
…		…
1081		1328
1082	if (coro->mainstack && coro->mainstack != main_mainstack)	1329	if (coro->mainstack && coro->mainstack != main_mainstack)
1083	{	1330	{
1084	struct coro temp;	1331	struct coro temp;
1085		1332
1086	assert (!(coro->flags & CF_RUNNING));
1087
1088	Zero (&temp, 1, struct coro);
1089	temp.save = CORO_SAVE_ALL;
1090
1091	if (coro->flags & CF_RUNNING)	1333	if (coro->flags & CF_RUNNING)
1092	croak ("FATAL: tried to destroy currently running coroutine");	1334	croak ("FATAL: tried to destroy currently running coroutine");
1093		1335
1094	save_perl (aTHX_ &temp);	1336	save_perl (aTHX_ &temp);
1095	load_perl (aTHX_ coro);	1337	load_perl (aTHX_ coro);
1096		1338
1097	coro_destroy_stacks (aTHX);	1339	coro_destroy (aTHX_ coro);
1098		1340
1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1341	load_perl (aTHX_ &temp);
1100		1342
1101	coro->mainstack = 0;	1343	coro->slot = 0;
1102	}	1344	}
1103		1345
1104	cctx_destroy (coro->cctx);	1346	cctx_destroy (coro->cctx);
1105	SvREFCNT_dec (coro->args);	1347	SvREFCNT_dec (coro->args);
1106		1348
…		…
1162	{	1404	{
1163	dTHX;	1405	dTHX;
1164	struct transfer_args ta;	1406	struct transfer_args ta;
1165		1407
1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1408	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167	TRANSFER (ta);	1409	TRANSFER (ta, 1);
1168	}
1169
1170	static int
1171	api_save (SV *coro_sv, int new_save)
1172	{
1173	dTHX;
1174	struct coro *coro = SvSTATE (coro_sv);
1175	int old_save = coro->save;
1176
1177	if (new_save >= 0)
1178	coro->save = new_save;
1179
1180	return old_save;
1181	}	1410	}
1182		1411
1183	/** Coro ********************************************************************/	1412	/** Coro ********************************************************************/
1184		1413
1185	static void	1414	static void
…		…
1187	{	1416	{
1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1417	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1189	}	1418	}
1190		1419
1191	static SV *	1420	static SV *
1192	coro_deq (pTHX_ int min_prio)	1421	coro_deq (pTHX)
1193	{	1422	{
1194	int prio = PRIO_MAX - PRIO_MIN;	1423	int prio;
1195		1424
1196	min_prio -= PRIO_MIN;
1197	if (min_prio < 0)
1198	min_prio = 0;
1199
1200	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1425	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1201	if (AvFILLp (coro_ready [prio]) >= 0)	1426	if (AvFILLp (coro_ready [prio]) >= 0)
1202	return av_shift (coro_ready [prio]);	1427	return av_shift (coro_ready [prio]);
1203		1428
1204	return 0;	1429	return 0;
1205	}	1430	}
…		…
1207	static int	1432	static int
1208	api_ready (SV *coro_sv)	1433	api_ready (SV *coro_sv)
1209	{	1434	{
1210	dTHX;	1435	dTHX;
1211	struct coro *coro;	1436	struct coro *coro;
		1437	SV *sv_hook;
		1438	void (*xs_hook)(void);
1212		1439
1213	if (SvROK (coro_sv))	1440	if (SvROK (coro_sv))
1214	coro_sv = SvRV (coro_sv);	1441	coro_sv = SvRV (coro_sv);
1215		1442
1216	coro = SvSTATE (coro_sv);	1443	coro = SvSTATE (coro_sv);
…		…
1219	return 0;	1446	return 0;
1220		1447
1221	coro->flags |= CF_READY;	1448	coro->flags |= CF_READY;
1222		1449
1223	LOCK;	1450	LOCK;
		1451
		1452	sv_hook = coro_nready ? 0 : coro_readyhook;
		1453	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1454
1224	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1455	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1225	++coro_nready;	1456	++coro_nready;
		1457
1226	UNLOCK;	1458	UNLOCK;
		1459
		1460	if (sv_hook)
		1461	{
		1462	dSP;
		1463
		1464	ENTER;
		1465	SAVETMPS;
		1466
		1467	PUSHMARK (SP);
		1468	PUTBACK;
		1469	call_sv (sv_hook, G_DISCARD);
		1470	SPAGAIN;
		1471
		1472	FREETMPS;
		1473	LEAVE;
		1474	}
		1475
		1476	if (xs_hook)
		1477	xs_hook ();
1227		1478
1228	return 1;	1479	return 1;
1229	}	1480	}
1230		1481
1231	static int	1482	static int
…		…
1241	SV *prev_sv, *next_sv;	1492	SV *prev_sv, *next_sv;
1242		1493
1243	for (;;)	1494	for (;;)
1244	{	1495	{
1245	LOCK;	1496	LOCK;
1246	next_sv = coro_deq (aTHX_ PRIO_MIN);	1497	next_sv = coro_deq (aTHX);
1247		1498
1248	/* nothing to schedule: call the idle handler */	1499	/* nothing to schedule: call the idle handler */
1249	if (!next_sv)	1500	if (expect_false (!next_sv))
1250	{	1501	{
1251	dSP;	1502	dSP;
1252	UNLOCK;	1503	UNLOCK;
1253		1504
1254	ENTER;	1505	ENTER;
1255	SAVETMPS;	1506	SAVETMPS;
1256		1507
1257	PUSHMARK (SP);	1508	PUSHMARK (SP);
1258	PUTBACK;	1509	PUTBACK;
1259	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1510	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1511	SPAGAIN;
1260		1512
1261	FREETMPS;	1513	FREETMPS;
1262	LEAVE;	1514	LEAVE;
1263	continue;	1515	continue;
1264	}	1516	}
1265		1517
1266	ta->next = SvSTATE (next_sv);	1518	ta->next = SvSTATE (next_sv);
1267		1519
1268	/* cannot transfer to destroyed coros, skip and look for next */	1520	/* cannot transfer to destroyed coros, skip and look for next */
1269	if (ta->next->flags & CF_DESTROYED)	1521	if (expect_false (ta->next->flags & CF_DESTROYED))
1270	{	1522	{
1271	UNLOCK;	1523	UNLOCK;
1272	SvREFCNT_dec (next_sv);	1524	SvREFCNT_dec (next_sv);
1273	/* coro_nready is already taken care of by destroy */	1525	/* coro_nready is already taken care of by destroy */
1274	continue;	1526	continue;
…		…
1319	{	1571	{
1320	dTHX;	1572	dTHX;
1321	struct transfer_args ta;	1573	struct transfer_args ta;
1322		1574
1323	prepare_schedule (aTHX_ &ta);	1575	prepare_schedule (aTHX_ &ta);
1324	TRANSFER (ta);	1576	TRANSFER (ta, 1);
1325	}	1577	}
1326		1578
1327	static int	1579	static int
1328	api_cede (void)	1580	api_cede (void)
1329	{	1581	{
1330	dTHX;	1582	dTHX;
1331	struct transfer_args ta;	1583	struct transfer_args ta;
1332		1584
1333	prepare_cede (aTHX_ &ta);	1585	prepare_cede (aTHX_ &ta);
1334		1586
1335	if (ta.prev != ta.next)	1587	if (expect_true (ta.prev != ta.next))
1336	{	1588	{
1337	TRANSFER (ta);	1589	TRANSFER (ta, 1);
1338	return 1;	1590	return 1;
1339	}	1591	}
1340	else	1592	else
1341	return 0;	1593	return 0;
1342	}	1594	}
…		…
1347	dTHX;	1599	dTHX;
1348	struct transfer_args ta;	1600	struct transfer_args ta;
1349		1601
1350	if (prepare_cede_notself (aTHX_ &ta))	1602	if (prepare_cede_notself (aTHX_ &ta))
1351	{	1603	{
1352	TRANSFER (ta);	1604	TRANSFER (ta, 1);
1353	return 1;	1605	return 1;
1354	}	1606	}
1355	else	1607	else
1356	return 0;	1608	return 0;
1357	}	1609	}
…		…
1376	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1628	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1377		1629
1378	if (coro->flags & CF_RUNNING)	1630	if (coro->flags & CF_RUNNING)
1379	PL_runops = RUNOPS_DEFAULT;	1631	PL_runops = RUNOPS_DEFAULT;
1380	else	1632	else
1381	coro->runops = RUNOPS_DEFAULT;	1633	coro->slot->runops = RUNOPS_DEFAULT;
		1634	}
		1635	}
		1636
		1637	static int
		1638	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1639	{
		1640	AV *padlist;
		1641	AV *av = (AV *)mg->mg_obj;
		1642
		1643	abort ();
		1644
		1645	return 0;
		1646	}
		1647
		1648	static MGVTBL coro_gensub_vtbl = {
		1649	0, 0, 0, 0,
		1650	coro_gensub_free
		1651	};
		1652
		1653	/*****************************************************************************/
		1654	/* PerlIO::cede */
		1655
		1656	typedef struct
		1657	{
		1658	PerlIOBuf base;
		1659	NV next, every;
		1660	} PerlIOCede;
		1661
		1662	static IV
		1663	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1664	{
		1665	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1666
		1667	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1668	self->next = nvtime () + self->every;
		1669
		1670	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1671	}
		1672
		1673	static SV *
		1674	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1675	{
		1676	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1677
		1678	return newSVnv (self->every);
		1679	}
		1680
		1681	static IV
		1682	PerlIOCede_flush (pTHX_ PerlIO *f)
		1683	{
		1684	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1685	double now = nvtime ();
		1686
		1687	if (now >= self->next)
1382	}	1688	{
		1689	api_cede ();
		1690	self->next = now + self->every;
		1691	}
		1692
		1693	return PerlIOBuf_flush (f);
1383	}	1694	}
		1695
		1696	static PerlIO_funcs PerlIO_cede =
		1697	{
		1698	sizeof(PerlIO_funcs),
		1699	"cede",
		1700	sizeof(PerlIOCede),
		1701	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1702	PerlIOCede_pushed,
		1703	PerlIOBuf_popped,
		1704	PerlIOBuf_open,
		1705	PerlIOBase_binmode,
		1706	PerlIOCede_getarg,
		1707	PerlIOBase_fileno,
		1708	PerlIOBuf_dup,
		1709	PerlIOBuf_read,
		1710	PerlIOBuf_unread,
		1711	PerlIOBuf_write,
		1712	PerlIOBuf_seek,
		1713	PerlIOBuf_tell,
		1714	PerlIOBuf_close,
		1715	PerlIOCede_flush,
		1716	PerlIOBuf_fill,
		1717	PerlIOBase_eof,
		1718	PerlIOBase_error,
		1719	PerlIOBase_clearerr,
		1720	PerlIOBase_setlinebuf,
		1721	PerlIOBuf_get_base,
		1722	PerlIOBuf_bufsiz,
		1723	PerlIOBuf_get_ptr,
		1724	PerlIOBuf_get_cnt,
		1725	PerlIOBuf_set_ptrcnt,
		1726	};
		1727
1384		1728
1385	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1729	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1386		1730
1387	PROTOTYPES: DISABLE	1731	PROTOTYPES: DISABLE
1388		1732
…		…
1390	{	1734	{
1391	#ifdef USE_ITHREADS	1735	#ifdef USE_ITHREADS
1392	MUTEX_INIT (&coro_mutex);	1736	MUTEX_INIT (&coro_mutex);
1393	#endif	1737	#endif
1394	BOOT_PAGESIZE;	1738	BOOT_PAGESIZE;
		1739
		1740	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1741	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1742
		1743	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1744	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1745	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1746
		1747	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1748	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1749	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395		1750
1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1751	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397		1752
1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1753	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1754	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));	1755	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));	1756	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1402		1757
1403	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1404	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1405	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1406	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1407	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1408	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1409	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1410
1411	main_mainstack = PL_mainstack;	1758	main_mainstack = PL_mainstack;
1412	main_top_env = PL_top_env;	1759	main_top_env = PL_top_env;
1413		1760
1414	while (main_top_env->je_prev)	1761	while (main_top_env->je_prev)
1415	main_top_env = main_top_env->je_prev;	1762	main_top_env = main_top_env->je_prev;
1416		1763
1417	coroapi.ver = CORO_API_VERSION;	1764	coroapi.ver = CORO_API_VERSION;
		1765	coroapi.rev = CORO_API_REVISION;
1418	coroapi.transfer = api_transfer;	1766	coroapi.transfer = api_transfer;
		1767
		1768	{
		1769	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1770
		1771	if (!svp) croak ("Time::HiRes is required");
		1772	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1773
		1774	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1775	}
1419		1776
1420	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1777	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1421	}	1778	}
1422		1779
1423	SV *	1780	SV *
1424	new (char *klass, ...)	1781	new (char *klass, ...)
1425	CODE:	1782	CODE:
1426	{	1783	{
1427	struct coro *coro;	1784	struct coro *coro;
		1785	MAGIC *mg;
1428	HV *hv;	1786	HV *hv;
1429	int i;	1787	int i;
1430		1788
1431	Newz (0, coro, 1, struct coro);	1789	Newz (0, coro, 1, struct coro);
1432	coro->args = newAV ();	1790	coro->args = newAV ();
1433	coro->save = CORO_SAVE_DEF;
1434	coro->flags = CF_NEW;	1791	coro->flags = CF_NEW;
1435		1792
1436	if (coro_first) coro_first->prev = coro;	1793	if (coro_first) coro_first->prev = coro;
1437	coro->next = coro_first;	1794	coro->next = coro_first;
1438	coro_first = coro;	1795	coro_first = coro;
1439		1796
1440	coro->hv = hv = newHV ();	1797	coro->hv = hv = newHV ();
1441	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1798	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1799	mg->mg_flags |= MGf_DUP;
1442	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1800	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1443		1801
		1802	av_extend (coro->args, items - 1);
1444	for (i = 1; i < items; i++)	1803	for (i = 1; i < items; i++)
1445	av_push (coro->args, newSVsv (ST (i)));	1804	av_push (coro->args, newSVsv (ST (i)));
1446	}	1805	}
1447	OUTPUT:	1806	OUTPUT:
1448	RETVAL	1807	RETVAL
1449		1808
1450	int	1809	# these not obviously related functions are all rolled into the same xs
1451	save (SV *coro, int new_save = -1)	1810	# function to increase chances that they all will call transfer with the same
1452	CODE:	1811	# stack offset
1453	RETVAL = api_save (coro, new_save);
1454	OUTPUT:
1455	RETVAL
1456
1457	int
1458	save_also (SV *coro_sv, int save_also)
1459	CODE:
1460	{
1461	struct coro *coro = SvSTATE (coro_sv);
1462	RETVAL = coro->save;
1463	coro->save |= save_also;
1464	}
1465	OUTPUT:
1466	RETVAL
1467
1468	void	1812	void
1469	_set_stacklevel (...)	1813	_set_stacklevel (...)
1470	ALIAS:	1814	ALIAS:
1471	Coro::State::transfer = 1	1815	Coro::State::transfer = 1
1472	Coro::schedule = 2	1816	Coro::schedule = 2
…		…
1474	Coro::cede_notself = 4	1818	Coro::cede_notself = 4
1475	CODE:	1819	CODE:
1476	{	1820	{
1477	struct transfer_args ta;	1821	struct transfer_args ta;
1478		1822
		1823	PUTBACK;
1479	switch (ix)	1824	switch (ix)
1480	{	1825	{
1481	case 0:	1826	case 0:
1482	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1827	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1483	ta.next = 0;	1828	ta.next = 0;
…		…
1502	if (!prepare_cede_notself (aTHX_ &ta))	1847	if (!prepare_cede_notself (aTHX_ &ta))
1503	XSRETURN_EMPTY;	1848	XSRETURN_EMPTY;
1504		1849
1505	break;	1850	break;
1506	}	1851	}
		1852	SPAGAIN;
1507		1853
1508	BARRIER;	1854	BARRIER;
		1855	PUTBACK;
1509	TRANSFER (ta);	1856	TRANSFER (ta, 0);
1510		1857	SPAGAIN; /* might be the sp of a different coroutine now */
1511	if (GIMME_V != G_VOID && ta.next != ta.prev)	1858	/* be extra careful not to ever do anything after TRANSFER */
1512	XSRETURN_YES;
1513	}	1859	}
1514		1860
1515	bool	1861	bool
1516	_destroy (SV *coro_sv)	1862	_destroy (SV *coro_sv)
1517	CODE:	1863	CODE:
1518	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1864	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1519	OUTPUT:	1865	OUTPUT:
1520	RETVAL	1866	RETVAL
1521		1867
1522	void	1868	void
1523	_exit (code)	1869	_exit (int code)
1524	int code
1525	PROTOTYPE: $	1870	PROTOTYPE: $
1526	CODE:	1871	CODE:
1527	_exit (code);	1872	_exit (code);
1528		1873
1529	int	1874	int
…		…
1563	call (Coro::State coro, SV *coderef)	1908	call (Coro::State coro, SV *coderef)
1564	ALIAS:	1909	ALIAS:
1565	eval = 1	1910	eval = 1
1566	CODE:	1911	CODE:
1567	{	1912	{
1568	if (coro->mainstack)	1913	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1569	{	1914	{
1570	struct coro temp;	1915	struct coro temp;
1571	Zero (&temp, 1, struct coro);
1572	temp.save = CORO_SAVE_ALL;
1573		1916
1574	if (!(coro->flags & CF_RUNNING))	1917	if (!(coro->flags & CF_RUNNING))
1575	{	1918	{
		1919	PUTBACK;
1576	save_perl (aTHX_ &temp);	1920	save_perl (aTHX_ &temp);
1577	load_perl (aTHX_ coro);	1921	load_perl (aTHX_ coro);
1578	}	1922	}
1579		1923
1580	{	1924	{
1581	dSP;	1925	dSP;
1582	ENTER;	1926	ENTER;
1583	SAVETMPS;	1927	SAVETMPS;
		1928	PUTBACK;
		1929	PUSHSTACK;
1584	PUSHMARK (SP);	1930	PUSHMARK (SP);
1585	PUTBACK;	1931
1586	if (ix)	1932	if (ix)
1587	eval_sv (coderef, 0);	1933	eval_sv (coderef, 0);
1588	else	1934	else
1589	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1935	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1936
		1937	POPSTACK;
1590	SPAGAIN;	1938	SPAGAIN;
1591	FREETMPS;	1939	FREETMPS;
1592	LEAVE;	1940	LEAVE;
1593	PUTBACK;	1941	PUTBACK;
1594	}	1942	}
1595		1943
1596	if (!(coro->flags & CF_RUNNING))	1944	if (!(coro->flags & CF_RUNNING))
1597	{	1945	{
1598	save_perl (aTHX_ coro);	1946	save_perl (aTHX_ coro);
1599	load_perl (aTHX_ &temp);	1947	load_perl (aTHX_ &temp);
		1948	SPAGAIN;
1600	}	1949	}
1601	}	1950	}
1602	}	1951	}
1603		1952
1604	SV *	1953	SV *
…		…
1616		1965
1617	void	1966	void
1618	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1967	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1619		1968
1620	SV *	1969	SV *
1621	has_stack (Coro::State coro)	1970	has_cctx (Coro::State coro)
1622	PROTOTYPE: $	1971	PROTOTYPE: $
1623	CODE:	1972	CODE:
1624	RETVAL = boolSV (!!coro->cctx);	1973	RETVAL = boolSV (!!coro->cctx);
1625	OUTPUT:	1974	OUTPUT:
1626	RETVAL	1975	RETVAL
…		…
1645	case 1: RETVAL = coro->usecount; break;	1994	case 1: RETVAL = coro->usecount; break;
1646	}	1995	}
1647	OUTPUT:	1996	OUTPUT:
1648	RETVAL	1997	RETVAL
1649		1998
		1999	void
		2000	force_cctx ()
		2001	CODE:
		2002	struct coro *coro = SvSTATE (coro_current);
		2003	coro->cctx->idle_sp = 0;
		2004
		2005	void
		2006	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2007	PROTOTYPE: $;$
		2008	CODE:
		2009	SvREFCNT_dec (self->throw);
		2010	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2011
		2012	void
		2013	swap_defsv (Coro::State self)
		2014	PROTOTYPE: $
		2015	ALIAS:
		2016	swap_defav = 1
		2017	CODE:
		2018	if (!self->slot)
		2019	croak ("cannot swap state with coroutine that has no saved state");
		2020	else
		2021	{
		2022	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2023	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2024
		2025	SV *tmp = *src; *src = *dst; *dst = tmp;
		2026	}
1650		2027
1651	MODULE = Coro::State PACKAGE = Coro	2028	MODULE = Coro::State PACKAGE = Coro
1652		2029
1653	BOOT:	2030	BOOT:
1654	{	2031	{
1655	int i;	2032	int i;
1656		2033
1657	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1658	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1659	av_async_pool = get_av ("Coro::async_pool", TRUE);	2034	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2035	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2036	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1660		2037
1661	coro_current = get_sv ("Coro::current", FALSE);	2038	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1662	SvREADONLY_on (coro_current);	2039	SvREADONLY_on (coro_current);
1663		2040
1664	coro_stash = gv_stashpv ("Coro", TRUE);	2041	coro_stash = gv_stashpv ("Coro", TRUE);
1665		2042
1666	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2043	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1667	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2044	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1668	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2045	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1669	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2046	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1672		2049
1673	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2050	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1674	coro_ready[i] = newAV ();	2051	coro_ready[i] = newAV ();
1675		2052
1676	{	2053	{
1677	SV *sv = perl_get_sv("Coro::API", 1);	2054	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2055	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1678		2056
1679	coroapi.schedule = api_schedule;	2057	coroapi.schedule = api_schedule;
1680	coroapi.save = api_save;
1681	coroapi.cede = api_cede;	2058	coroapi.cede = api_cede;
1682	coroapi.cede_notself = api_cede_notself;	2059	coroapi.cede_notself = api_cede_notself;
1683	coroapi.ready = api_ready;	2060	coroapi.ready = api_ready;
1684	coroapi.is_ready = api_is_ready;	2061	coroapi.is_ready = api_is_ready;
1685	coroapi.nready = &coro_nready;	2062	coroapi.nready = &coro_nready;
…		…
1695	_set_current (SV *current)	2072	_set_current (SV *current)
1696	PROTOTYPE: $	2073	PROTOTYPE: $
1697	CODE:	2074	CODE:
1698	SvREFCNT_dec (SvRV (coro_current));	2075	SvREFCNT_dec (SvRV (coro_current));
1699	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2076	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		2077
		2078	void
		2079	_set_readyhook (SV *hook)
		2080	PROTOTYPE: $
		2081	CODE:
		2082	LOCK;
		2083	SvREFCNT_dec (coro_readyhook);
		2084	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2085	UNLOCK;
1700		2086
1701	int	2087	int
1702	prio (Coro::State coro, int newprio = 0)	2088	prio (Coro::State coro, int newprio = 0)
1703	ALIAS:	2089	ALIAS:
1704	nice = 1	2090	nice = 1
…		…
1739	# for async_pool speedup	2125	# for async_pool speedup
1740	void	2126	void
1741	_pool_1 (SV *cb)	2127	_pool_1 (SV *cb)
1742	CODE:	2128	CODE:
1743	{	2129	{
1744	int i, len;	2130	struct coro *coro = SvSTATE (coro_current);
1745	HV *hv = (HV *)SvRV (coro_current);	2131	HV *hv = (HV *)SvRV (coro_current);
1746	AV *defav = GvAV (PL_defgv);	2132	AV *defav = GvAV (PL_defgv);
1747	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2133	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1748	AV *invoke_av;	2134	AV *invoke_av;
		2135	int i, len;
1749		2136
1750	if (!invoke)	2137	if (!invoke)
		2138	{
		2139	SV *old = PL_diehook;
		2140	PL_diehook = 0;
		2141	SvREFCNT_dec (old);
1751	croak ("\3terminate\2\n");	2142	croak ("\3async_pool terminate\2\n");
		2143	}
		2144
		2145	SvREFCNT_dec (coro->saved_deffh);
		2146	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1752		2147
1753	hv_store (hv, "desc", sizeof ("desc") - 1,	2148	hv_store (hv, "desc", sizeof ("desc") - 1,
1754	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2149	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1755		2150
1756	invoke_av = (AV *)SvRV (invoke);	2151	invoke_av = (AV *)SvRV (invoke);
…		…
1774	{	2169	{
1775	struct coro *coro = SvSTATE (coro_current);	2170	struct coro *coro = SvSTATE (coro_current);
1776		2171
1777	sv_setsv (cb, &PL_sv_undef);	2172	sv_setsv (cb, &PL_sv_undef);
1778		2173
		2174	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2175	coro->saved_deffh = 0;
		2176
1779	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2177	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1780	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2178	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2179	{
		2180	SV *old = PL_diehook;
		2181	PL_diehook = 0;
		2182	SvREFCNT_dec (old);
1781	croak ("\3terminate\2\n");	2183	croak ("\3async_pool terminate\2\n");
		2184	}
1782		2185
1783	av_clear (GvAV (PL_defgv));	2186	av_clear (GvAV (PL_defgv));
1784	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2187	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1785	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2188	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1786		2189
1787	coro->save = CORO_SAVE_DEF;
1788	coro->prio = 0;	2190	coro->prio = 0;
1789		2191
1790	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2192	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1791	api_trace (coro_current, 0);	2193	api_trace (coro_current, 0);
1792		2194
1793	av_push (av_async_pool, newSVsv (coro_current));	2195	av_push (av_async_pool, newSVsv (coro_current));
1794	}	2196	}
		2197
		2198	#if 0
		2199
		2200	void
		2201	_generator_call (...)
		2202	PROTOTYPE: @
		2203	PPCODE:
		2204	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2205	xxxx
		2206	abort ();
		2207
		2208	SV *
		2209	gensub (SV *sub, ...)
		2210	PROTOTYPE: &;@
		2211	CODE:
		2212	{
		2213	struct coro *coro;
		2214	MAGIC *mg;
		2215	CV *xcv;
		2216	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2217	int i;
		2218
		2219	CvGV (ncv) = CvGV (cv);
		2220	CvFILE (ncv) = CvFILE (cv);
		2221
		2222	Newz (0, coro, 1, struct coro);
		2223	coro->args = newAV ();
		2224	coro->flags = CF_NEW;
		2225
		2226	av_extend (coro->args, items - 1);
		2227	for (i = 1; i < items; i++)
		2228	av_push (coro->args, newSVsv (ST (i)));
		2229
		2230	CvISXSUB_on (ncv);
		2231	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2232
		2233	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2234
		2235	CvXSUB (ncv) = CvXSUB (xcv);
		2236	CvANON_on (ncv);
		2237
		2238	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2239	RETVAL = newRV_noinc ((SV *)ncv);
		2240	}
		2241	OUTPUT:
		2242	RETVAL
		2243
		2244	#endif
1795		2245
1796		2246
1797	MODULE = Coro::State PACKAGE = Coro::AIO	2247	MODULE = Coro::State PACKAGE = Coro::AIO
1798		2248
1799	SV *	2249	SV *
…		…
1826	PL_laststype = data->laststype;	2276	PL_laststype = data->laststype;
1827	PL_laststatval = data->laststatval;	2277	PL_laststatval = data->laststatval;
1828	PL_statcache = data->statcache;	2278	PL_statcache = data->statcache;
1829	}	2279	}
1830		2280
		2281
		2282	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2283
		2284	BOOT:
		2285	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2286
		2287	SV *
		2288	_schedule (...)
		2289	PROTOTYPE: @
		2290	CODE:
		2291	{
		2292	static int incede;
		2293
		2294	api_cede_notself ();
		2295
		2296	++incede;
		2297	while (coro_nready >= incede && api_cede ())
		2298	;
		2299
		2300	sv_setsv (sv_activity, &PL_sv_undef);
		2301	if (coro_nready >= incede)
		2302	{
		2303	PUSHMARK (SP);
		2304	PUTBACK;
		2305	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2306	SPAGAIN;
		2307	}
		2308
		2309	--incede;
		2310	}
		2311
		2312
		2313	MODULE = Coro::State PACKAGE = PerlIO::cede
		2314
		2315	BOOT:
		2316	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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