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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 1.247 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 */
136		167
137	static GV *irsgv; /* $/ */	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 */
138		173
139	/* async_pool helper stuff */	174	/* async_pool helper stuff */
140	static SV *sv_pool_rss;	175	static SV *sv_pool_rss;
141	static SV *sv_pool_size;	176	static SV *sv_pool_size;
142	static AV *av_async_pool;	177	static AV *av_async_pool;
		178
		179	/* Coro::AnyEvent */
		180	static SV *sv_activity;
143		181
144	static struct coro_cctx *cctx_first;	182	static struct coro_cctx *cctx_first;
145	static int cctx_count, cctx_idle;	183	static int cctx_count, cctx_idle;
146		184
147	enum {	185	enum {
…		…
178	CF_READY = 0x0002, /* coroutine is ready */	216	CF_READY = 0x0002, /* coroutine is ready */
179	CF_NEW = 0x0004, /* has never been switched to */	217	CF_NEW = 0x0004, /* has never been switched to */
180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	218	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181	};	219	};
182		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
183	/* this is a structure representing a perl-level coroutine */	234	/* this is a structure representing a perl-level coroutine */
184	struct coro {	235	struct coro {
185	/* the c coroutine allocated to this perl coroutine, if any */	236	/* the c coroutine allocated to this perl coroutine, if any */
186	coro_cctx *cctx;	237	coro_cctx *cctx;
187		238
		239	/* process data */
		240	AV *mainstack;
		241	perl_slots *slot; /* basically the saved sp */
		242
188	/* data associated with this coroutine (initial args) */	243	AV *args; /* data associated with this coroutine (initial args) */
189	AV *args;	244	int refcnt; /* coroutines are refcounted, yes */
190	int refcnt;
191	int flags; /* CF_ flags */	245	int flags; /* CF_ flags */
192		246	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		247
205	/* statistics */	248	/* statistics */
206	int usecount; /* number of transfers to this coro */	249	int usecount; /* number of transfers to this coro */
207		250
208	/* coro process data */	251	/* coro process data */
209	int prio;	252	int prio;
210	//SV *throw;	253	SV *throw; /* exception to be thrown */
211		254
212	/* async_pool */	255	/* async_pool */
213	SV *saved_deffh;	256	SV *saved_deffh;
214		257
215	/* linked list */	258	/* linked list */
216	struct coro *next, *prev;	259	struct coro *next, *prev;
217	HV *hv; /* the perl hash associated with this coro, if any */
218	};	260	};
219		261
220	typedef struct coro *Coro__State;	262	typedef struct coro *Coro__State;
221	typedef struct coro *Coro__State_or_hashref;	263	typedef struct coro *Coro__State_or_hashref;
222		264
…		…
229	#define PRIO_IDLE -3	271	#define PRIO_IDLE -3
230	#define PRIO_MIN -4	272	#define PRIO_MIN -4
231		273
232	/* for Coro.pm */	274	/* for Coro.pm */
233	static SV *coro_current;	275	static SV *coro_current;
		276	static SV *coro_readyhook;
234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	277	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
235	static int coro_nready;	278	static int coro_nready;
236	static struct coro *coro_first;	279	static struct coro *coro_first;
237		280
238	/** lowlevel stuff **********************************************************/	281	/** lowlevel stuff **********************************************************/
239		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
240	static AV *	313	static AV *
241	coro_clone_padlist (pTHX_ CV *cv)	314	coro_clone_padlist (pTHX_ CV *cv)
242	{	315	{
243	AV *padlist = CvPADLIST (cv);	316	AV *padlist = CvPADLIST (cv);
244	AV *newpadlist, *newpad;	317	AV *newpadlist, *newpad;
245		318
246	newpadlist = newAV ();	319	newpadlist = newAV ();
247	AvREAL_off (newpadlist);	320	AvREAL_off (newpadlist);
248	#if PERL_VERSION_ATLEAST (5,9,0)	321	#if PERL_VERSION_ATLEAST (5,10,0)
249	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	322	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
250	#else	323	#else
251	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	324	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
252	#endif	325	#endif
253	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	326	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
291		364
292	/* casting is fun. */	365	/* casting is fun. */
293	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	366	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
294	free_padlist (aTHX_ padlist);	367	free_padlist (aTHX_ padlist);
295		368
296	SvREFCNT_dec (av);	369	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
297		370
298	return 0;	371	return 0;
299	}	372	}
300		373
301	#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
302		376
303	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	};
304		381
305	#define CORO_MAGIC(cv) \	382	#define CORO_MAGIC(sv,type) \
306	SvMAGIC (cv) \	383	SvMAGIC (sv) \
307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	384	? SvMAGIC (sv)->mg_type == type \
308	? SvMAGIC (cv) \	385	? SvMAGIC (sv) \
309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	386	: mg_find (sv, type) \
310	: 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)
311		391
312	static struct coro *	392	static struct coro *
313	SvSTATE_ (pTHX_ SV *coro)	393	SvSTATE_ (pTHX_ SV *coro)
314	{	394	{
315	HV *stash;	395	HV *stash;
316	MAGIC *mg;	396	MAGIC *mg;
317		397
318	if (SvROK (coro))	398	if (SvROK (coro))
319	coro = SvRV (coro);	399	coro = SvRV (coro);
320		400
321	if (SvTYPE (coro) != SVt_PVHV)	401	if (expect_false (SvTYPE (coro) != SVt_PVHV))
322	croak ("Coro::State object required");	402	croak ("Coro::State object required");
323		403
324	stash = SvSTASH (coro);	404	stash = SvSTASH (coro);
325	if (stash != coro_stash && stash != coro_state_stash)	405	if (expect_false (stash != coro_stash && stash != coro_state_stash))
326	{	406	{
327	/* very slow, but rare, check */	407	/* very slow, but rare, check */
328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	408	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329	croak ("Coro::State object required");	409	croak ("Coro::State object required");
330	}	410	}
331		411
332	mg = CORO_MAGIC (coro);	412	mg = CORO_MAGIC_state (coro);
333	return (struct coro *)mg->mg_ptr;	413	return (struct coro *)mg->mg_ptr;
334	}	414	}
335		415
336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	416	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
337		417
338	/* the next two functions merely cache the padlists */	418	/* the next two functions merely cache the padlists */
339	static void	419	static void
340	get_padlist (pTHX_ CV *cv)	420	get_padlist (pTHX_ CV *cv)
341	{	421	{
342	MAGIC *mg = CORO_MAGIC (cv);	422	MAGIC *mg = CORO_MAGIC_cv (cv);
343	AV *av;	423	AV *av;
344		424
345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	425	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	426	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
347	else	427	else
348	{	428	{
349	#if CORO_PREFER_PERL_FUNCTIONS	429	#if CORO_PREFER_PERL_FUNCTIONS
350	/* this is probably cleaner, but also slower? */	430	/* this is probably cleaner? but also slower! */
		431	/* in practise, it seems to be less stable */
351	CV *cp = Perl_cv_clone (cv);	432	CV *cp = Perl_cv_clone (cv);
352	CvPADLIST (cv) = CvPADLIST (cp);	433	CvPADLIST (cv) = CvPADLIST (cp);
353	CvPADLIST (cp) = 0;	434	CvPADLIST (cp) = 0;
354	SvREFCNT_dec (cp);	435	SvREFCNT_dec (cp);
355	#else	436	#else
…		…
359	}	440	}
360		441
361	static void	442	static void
362	put_padlist (pTHX_ CV *cv)	443	put_padlist (pTHX_ CV *cv)
363	{	444	{
364	MAGIC *mg = CORO_MAGIC (cv);	445	MAGIC *mg = CORO_MAGIC_cv (cv);
365	AV *av;	446	AV *av;
366		447
367	if (!mg)	448	if (expect_false (!mg))
368	{	449	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		450
375	av = (AV *)mg->mg_obj;	451	av = (AV *)mg->mg_obj;
376		452
377	if (AvFILLp (av) >= AvMAX (av))	453	if (expect_false (AvFILLp (av) >= AvMAX (av)))
378	av_extend (av, AvMAX (av) + 1);	454	av_extend (av, AvMAX (av) + 1);
379		455
380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	456	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
381	}	457	}
382		458
383	/** load & save, init *******************************************************/	459	/** load & save, init *******************************************************/
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	GvSV (PL_defgv) = c->defsv;
393	GvAV (PL_defgv) = c->defav;
394	GvSV (PL_errgv) = c->errsv;
395	GvSV (irsgv) = c->irssv_sv;
396		477
397	{	478	{
398	dSP;	479	dSP;
		480
399	CV *cv;	481	CV *cv;
400		482
401	/* now do the ugly restore mess */	483	/* now do the ugly restore mess */
402	while ((cv = (CV *)POPs))	484	while (expect_true (cv = (CV *)POPs))
403	{	485	{
404	put_padlist (aTHX_ cv); /* mark this padlist as available */	486	put_padlist (aTHX_ cv); /* mark this padlist as available */
405	CvDEPTH (cv) = PTR2IV (POPs);	487	CvDEPTH (cv) = PTR2IV (POPs);
406	CvPADLIST (cv) = (AV *)POPs;	488	CvPADLIST (cv) = (AV *)POPs;
407	}	489	}
…		…
426		508
427	XPUSHs (Nullsv);	509	XPUSHs (Nullsv);
428	/* this loop was inspired by pp_caller */	510	/* this loop was inspired by pp_caller */
429	for (;;)	511	for (;;)
430	{	512	{
431	while (cxix >= 0)	513	while (expect_true (cxix >= 0))
432	{	514	{
433	PERL_CONTEXT *cx = &ccstk[cxix--];	515	PERL_CONTEXT *cx = &ccstk[cxix--];
434		516
435	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	517	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
436	{	518	{
437	CV *cv = cx->blk_sub.cv;	519	CV *cv = cx->blk_sub.cv;
438		520
439	if (CvDEPTH (cv))	521	if (expect_true (CvDEPTH (cv)))
440	{	522	{
441	EXTEND (SP, 3);	523	EXTEND (SP, 3);
442	PUSHs ((SV *)CvPADLIST (cv));	524	PUSHs ((SV *)CvPADLIST (cv));
443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	525	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
444	PUSHs ((SV *)cv);	526	PUSHs ((SV *)cv);
445		527
446	CvDEPTH (cv) = 0;	528	CvDEPTH (cv) = 0;
447	get_padlist (aTHX_ cv);	529	get_padlist (aTHX_ cv);
448	}	530	}
449	}	531	}
450	}	532	}
451		533
452	if (top_si->si_type == PERLSI_MAIN)	534	if (expect_true (top_si->si_type == PERLSI_MAIN))
453	break;	535	break;
454		536
455	top_si = top_si->si_prev;	537	top_si = top_si->si_prev;
456	ccstk = top_si->si_cxstack;	538	ccstk = top_si->si_cxstack;
457	cxix = top_si->si_cxix;	539	cxix = top_si->si_cxix;
458	}	540	}
459		541
460	PUTBACK;	542	PUTBACK;
461	}	543	}
462		544
		545	/* allocate some space on the context stack for our purposes */
		546	/* we manually unroll here, as usually 2 slots is enough */
		547	if (SLOT_COUNT >= 1) CXINC;
		548	if (SLOT_COUNT >= 2) CXINC;
		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 */
		556
		557	c->mainstack = PL_mainstack;
		558
		559	{
		560	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		561
463	c->defav = GvAV (PL_defgv);	562	slot->defav = GvAV (PL_defgv);
464	c->defsv = DEFSV;	563	slot->defsv = DEFSV;
465	c->errsv = ERRSV;	564	slot->errsv = ERRSV;
466	c->irssv_sv = GvSV (irsgv);	565	slot->irsgv = GvSV (irsgv);
467		566
468	#define VAR(name,type)c->name = PL_ ## name;	567	#define VAR(name,type) slot->name = PL_ ## name;
469	# include "state.h"	568	# include "state.h"
470	#undef VAR	569	#undef VAR
		570	}
471	}	571	}
472		572
473	/*	573	/*
474	* allocate various perl stacks. This is an exact copy	574	* allocate various perl stacks. This is an exact copy
475	* of perl.c:init_stacks, except that it uses less memory	575	* of perl.c:init_stacks, except that it uses less memory
…		…
480	# define coro_init_stacks init_stacks	580	# define coro_init_stacks init_stacks
481	#else	581	#else
482	static void	582	static void
483	coro_init_stacks (pTHX)	583	coro_init_stacks (pTHX)
484	{	584	{
485	PL_curstackinfo = new_stackinfo(64, 6);	585	PL_curstackinfo = new_stackinfo(32, 8);
486	PL_curstackinfo->si_type = PERLSI_MAIN;	586	PL_curstackinfo->si_type = PERLSI_MAIN;
487	PL_curstack = PL_curstackinfo->si_stack;	587	PL_curstack = PL_curstackinfo->si_stack;
488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	588	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
489		589
490	PL_stack_base = AvARRAY(PL_curstack);	590	PL_stack_base = AvARRAY(PL_curstack);
491	PL_stack_sp = PL_stack_base;	591	PL_stack_sp = PL_stack_base;
492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	592	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
493		593
494	New(50,PL_tmps_stack,64,SV*);	594	New(50,PL_tmps_stack,32,SV*);
495	PL_tmps_floor = -1;	595	PL_tmps_floor = -1;
496	PL_tmps_ix = -1;	596	PL_tmps_ix = -1;
497	PL_tmps_max = 64;	597	PL_tmps_max = 32;
498		598
499	New(54,PL_markstack,16,I32);	599	New(54,PL_markstack,16,I32);
500	PL_markstack_ptr = PL_markstack;	600	PL_markstack_ptr = PL_markstack;
501	PL_markstack_max = PL_markstack + 16;	601	PL_markstack_max = PL_markstack + 16;
502		602
503	#ifdef SET_MARK_OFFSET	603	#ifdef SET_MARK_OFFSET
504	SET_MARK_OFFSET;	604	SET_MARK_OFFSET;
505	#endif	605	#endif
506		606
507	New(54,PL_scopestack,16,I32);	607	New(54,PL_scopestack,8,I32);
508	PL_scopestack_ix = 0;	608	PL_scopestack_ix = 0;
509	PL_scopestack_max = 16;	609	PL_scopestack_max = 8;
510		610
511	New(54,PL_savestack,64,ANY);	611	New(54,PL_savestack,24,ANY);
512	PL_savestack_ix = 0;	612	PL_savestack_ix = 0;
513	PL_savestack_max = 64;	613	PL_savestack_max = 24;
514		614
515	#if !PERL_VERSION_ATLEAST (5,9,0)	615	#if !PERL_VERSION_ATLEAST (5,10,0)
516	New(54,PL_retstack,4,OP*);	616	New(54,PL_retstack,4,OP*);
517	PL_retstack_ix = 0;	617	PL_retstack_ix = 0;
518	PL_retstack_max = 4;	618	PL_retstack_max = 4;
519	#endif	619	#endif
520	}	620	}
…		…
543		643
544	Safefree (PL_tmps_stack);	644	Safefree (PL_tmps_stack);
545	Safefree (PL_markstack);	645	Safefree (PL_markstack);
546	Safefree (PL_scopestack);	646	Safefree (PL_scopestack);
547	Safefree (PL_savestack);	647	Safefree (PL_savestack);
548	#if !PERL_VERSION_ATLEAST (5,9,0)	648	#if !PERL_VERSION_ATLEAST (5,10,0)
549	Safefree (PL_retstack);	649	Safefree (PL_retstack);
550	#endif	650	#endif
551	}	651	}
552		652
553	static size_t	653	static size_t
…		…
555	{	655	{
556	size_t rss = sizeof (*coro);	656	size_t rss = sizeof (*coro);
557		657
558	if (coro->mainstack)	658	if (coro->mainstack)
559	{	659	{
		660	perl_slots tmp_slot;
		661	perl_slots *slot;
		662
560	if (coro->flags & CF_RUNNING)	663	if (coro->flags & CF_RUNNING)
561	{	664	{
		665	slot = &tmp_slot;
		666
562	#define VAR(name,type)coro->name = PL_ ## name;	667	#define VAR(name,type) slot->name = PL_ ## name;
563	# include "state.h"	668	# include "state.h"
564	#undef VAR	669	#undef VAR
565	}	670	}
		671	else
		672	slot = coro->slot;
566		673
		674	if (slot)
		675	{
567	rss += sizeof (coro->curstackinfo);	676	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);	677	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
570	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	678	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
571	rss += coro->tmps_max * sizeof (SV *);	679	rss += slot->tmps_max * sizeof (SV *);
572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	680	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
573	rss += coro->scopestack_max * sizeof (I32);	681	rss += slot->scopestack_max * sizeof (I32);
574	rss += coro->savestack_max * sizeof (ANY);	682	rss += slot->savestack_max * sizeof (ANY);
575		683
576	#if !PERL_VERSION_ATLEAST (5,9,0)	684	#if !PERL_VERSION_ATLEAST (5,10,0)
577	rss += coro->retstack_max * sizeof (OP *);	685	rss += slot->retstack_max * sizeof (OP *);
578	#endif	686	#endif
		687	}
579	}	688	}
580		689
581	return rss;	690	return rss;
582	}	691	}
583		692
584	/** coroutine stack handling ************************************************/	693	/** coroutine stack handling ************************************************/
		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	}
585		784
586	static void	785	static void
587	coro_setup (pTHX_ struct coro *coro)	786	coro_setup (pTHX_ struct coro *coro)
588	{	787	{
589	/*	788	/*
…		…
594	PL_runops = RUNOPS_DEFAULT;	793	PL_runops = RUNOPS_DEFAULT;
595	PL_curcop = &PL_compiling;	794	PL_curcop = &PL_compiling;
596	PL_in_eval = EVAL_NULL;	795	PL_in_eval = EVAL_NULL;
597	PL_comppad = 0;	796	PL_comppad = 0;
598	PL_curpm = 0;	797	PL_curpm = 0;
		798	PL_curpad = 0;
599	PL_localizing = 0;	799	PL_localizing = 0;
600	PL_dirty = 0;	800	PL_dirty = 0;
601	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);
602		809
603	GvSV (PL_defgv) = NEWSV (0, 0);	810	GvSV (PL_defgv) = newSV (0);
604	GvAV (PL_defgv) = coro->args; coro->args = 0;	811	GvAV (PL_defgv) = coro->args; coro->args = 0;
605	GvSV (PL_errgv) = NEWSV (0, 0);	812	GvSV (PL_errgv) = newSV (0);
606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	813	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
607	PL_rs = newSVsv (GvSV (irsgv));	814	PL_rs = newSVsv (GvSV (irsgv));
608		815	PL_defoutgv = (GV *)SvREFCNT_inc (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		816
618	{	817	{
619	dSP;	818	dSP;
620	LOGOP myop;	819	LOGOP myop;
621		820
622	Zero (&myop, 1, LOGOP);	821	Zero (&myop, 1, LOGOP);
623	myop.op_next = Nullop;	822	myop.op_next = Nullop;
624	myop.op_flags = OPf_WANT_VOID;	823	myop.op_flags = OPf_WANT_VOID;
625		824
626	PUSHMARK (SP);	825	PUSHMARK (SP);
627	XPUSHs (av_shift (GvAV (PL_defgv)));	826	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
628	PUTBACK;	827	PUTBACK;
629	PL_op = (OP *)&myop;	828	PL_op = (OP *)&myop;
630	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	829	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
631	SPAGAIN;	830	SPAGAIN;
632	}	831	}
633		832
634	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;
635	}	839	}
636		840
637	static void	841	static void
638	coro_destroy (pTHX_ struct coro *coro)	842	coro_destroy (pTHX_ struct coro *coro)
639	{	843	{
…		…
659	SvREFCNT_dec (GvSV (PL_errgv));	863	SvREFCNT_dec (GvSV (PL_errgv));
660	SvREFCNT_dec (PL_defoutgv);	864	SvREFCNT_dec (PL_defoutgv);
661	SvREFCNT_dec (PL_rs);	865	SvREFCNT_dec (PL_rs);
662	SvREFCNT_dec (GvSV (irsgv));	866	SvREFCNT_dec (GvSV (irsgv));
663		867
		868	SvREFCNT_dec (PL_diehook);
		869	SvREFCNT_dec (PL_warnhook);
		870
664	SvREFCNT_dec (coro->saved_deffh);	871	SvREFCNT_dec (coro->saved_deffh);
665	//SvREFCNT_dec (coro->throw);	872	SvREFCNT_dec (coro->throw);
666		873
667	coro_destroy_stacks (aTHX);	874	coro_destroy_stacks (aTHX);
668	}	875	}
669		876
670	static void	877	static void
671	free_coro_mortal (pTHX)	878	free_coro_mortal (pTHX)
672	{	879	{
673	if (coro_mortal)	880	if (expect_true (coro_mortal))
674	{	881	{
675	SvREFCNT_dec (coro_mortal);	882	SvREFCNT_dec (coro_mortal);
676	coro_mortal = 0;	883	coro_mortal = 0;
677	}	884	}
678	}	885	}
…		…
707	bot = PL_stack_base + cx->blk_oldsp + 1;	914	bot = PL_stack_base + cx->blk_oldsp + 1;
708	top = cx->blk_gimme == G_ARRAY ? SP + 1	915	top = cx->blk_gimme == G_ARRAY ? SP + 1
709	: cx->blk_gimme == G_SCALAR ? bot + 1	916	: cx->blk_gimme == G_SCALAR ? bot + 1
710	: bot;	917	: bot;
711		918
		919	av_extend (av, top - bot);
712	while (bot < top)	920	while (bot < top)
713	av_push (av, SvREFCNT_inc (*bot++));	921	av_push (av, SvREFCNT_inc (*bot++));
714		922
715	PL_runops = RUNOPS_DEFAULT;	923	PL_runops = RUNOPS_DEFAULT;
716	ENTER;	924	ENTER;
…		…
756	SAVETMPS;	964	SAVETMPS;
757	EXTEND (SP, 3);	965	EXTEND (SP, 3);
758	PUSHMARK (SP);	966	PUSHMARK (SP);
759	PUSHs (&PL_sv_yes);	967	PUSHs (&PL_sv_yes);
760	PUSHs (fullname);	968	PUSHs (fullname);
761	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);
762	PUTBACK;	970	PUTBACK;
763	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);
764	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);
765	SPAGAIN;	973	SPAGAIN;
766	FREETMPS;	974	FREETMPS;
…		…
802		1010
803	/* 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 */
804	/* _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 */
805	/* during execution of a perl program */	1013	/* during execution of a perl program */
806	static void NOINLINE	1014	static void NOINLINE
807	prepare_cctx (pTHX_ coro_cctx *cctx)	1015	cctx_prepare (pTHX_ coro_cctx *cctx)
808	{	1016	{
809	dSP;	1017	dSP;
810	LOGOP myop;	1018	LOGOP myop;
811		1019
812	PL_top_env = &PL_start_env;	1020	PL_top_env = &PL_start_env;
…		…
830		1038
831	/*	1039	/*
832	* this is a _very_ stripped down perl interpreter ;)	1040	* this is a _very_ stripped down perl interpreter ;)
833	*/	1041	*/
834	static void	1042	static void
835	coro_run (void *arg)	1043	cctx_run (void *arg)
836	{	1044	{
837	dTHX;	1045	dTHX;
838		1046
839	/* coro_run is the alternative tail of transfer(), so unlock here. */	1047	/* cctx_run is the alternative tail of transfer(), so unlock here. */
840	UNLOCK;	1048	UNLOCK;
841		1049
842	/* we now skip the entersub that lead to transfer() */	1050	/* we now skip the entersub that lead to transfer() */
843	PL_op = PL_op->op_next;	1051	PL_op = PL_op->op_next;
844		1052
845	/* inject a fake subroutine call to cctx_init */	1053	/* inject a fake subroutine call to cctx_init */
846	prepare_cctx (aTHX_ (coro_cctx *)arg);	1054	cctx_prepare (aTHX_ (coro_cctx *)arg);
847		1055
848	/* 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 */
849	PL_restartop = PL_op;	1057	PL_restartop = PL_op;
850	perl_run (PL_curinterp);	1058	perl_run (PL_curinterp);
851		1059
…		…
870	++cctx_count;	1078	++cctx_count;
871		1079
872	Newz (0, cctx, 1, coro_cctx);	1080	Newz (0, cctx, 1, coro_cctx);
873		1081
874	#if HAVE_MMAP	1082	#if HAVE_MMAP
875
876	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;
877	/* mmap supposedly does allocate-on-write for us */	1084	/* 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);	1085	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
879		1086
880	if (cctx->sptr != (void *)-1)	1087	if (cctx->sptr != (void *)-1)
…		…
901	stack_start = cctx->sptr;	1108	stack_start = cctx->sptr;
902	stack_size = cctx->ssize;	1109	stack_size = cctx->ssize;
903	}	1110	}
904		1111
905	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1112	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
906	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);
907		1114
908	return cctx;	1115	return cctx;
909	}	1116	}
910		1117
911	static void	1118	static void
…		…
928	Safefree (cctx->sptr);	1135	Safefree (cctx->sptr);
929		1136
930	Safefree (cctx);	1137	Safefree (cctx);
931	}	1138	}
932		1139
		1140	/* wether this cctx should be destructed */
		1141	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1142
933	static coro_cctx *	1143	static coro_cctx *
934	cctx_get (pTHX)	1144	cctx_get (pTHX)
935	{	1145	{
936	while (cctx_first)	1146	while (expect_true (cctx_first))
937	{	1147	{
938	coro_cctx *cctx = cctx_first;	1148	coro_cctx *cctx = cctx_first;
939	cctx_first = cctx->next;	1149	cctx_first = cctx->next;
940	--cctx_idle;	1150	--cctx_idle;
941		1151
942	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1152	if (expect_true (!CCTX_EXPIRED (cctx)))
943	return cctx;	1153	return cctx;
944		1154
945	cctx_destroy (cctx);	1155	cctx_destroy (cctx);
946	}	1156	}
947		1157
…		…
950		1160
951	static void	1161	static void
952	cctx_put (coro_cctx *cctx)	1162	cctx_put (coro_cctx *cctx)
953	{	1163	{
954	/* free another cctx if overlimit */	1164	/* free another cctx if overlimit */
955	if (cctx_idle >= MAX_IDLE_CCTX)	1165	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
956	{	1166	{
957	coro_cctx *first = cctx_first;	1167	coro_cctx *first = cctx_first;
958	cctx_first = first->next;	1168	cctx_first = first->next;
959	--cctx_idle;	1169	--cctx_idle;
960		1170
…		…
966	cctx_first = cctx;	1176	cctx_first = cctx;
967	}	1177	}
968		1178
969	/** coroutine switching *****************************************************/	1179	/** coroutine switching *****************************************************/
970		1180
971	static void NOINLINE	1181	static void
972	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1182	transfer_check (pTHX_ struct coro *prev, struct coro *next)
973	{	1183	{
974	if (prev != next)	1184	if (expect_true (prev != next))
975	{	1185	{
976	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1186	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");	1187	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
978		1188
979	if (next->flags & CF_RUNNING)	1189	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");	1190	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
981		1191
982	if (next->flags & CF_DESTROYED)	1192	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");	1193	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
984		1194
		1195	#if !PERL_VERSION_ATLEAST (5,10,0)
985	if (PL_lex_state != LEX_NOTPARSING)	1196	if (expect_false (PL_lex_state != LEX_NOTPARSING))
986	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
987	}	1199	}
988	}	1200	}
989		1201
990	/* always use the TRANSFER macro */	1202	/* always use the TRANSFER macro */
991	static void NOINLINE	1203	static void NOINLINE
992	transfer (pTHX_ struct coro *prev, struct coro *next)	1204	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
993	{	1205	{
994	dSTACKLEVEL;	1206	dSTACKLEVEL;
		1207	static volatile int has_throw;
995		1208
996	/* sometimes transfer is only called to set idle_sp */	1209	/* sometimes transfer is only called to set idle_sp */
997	if (!next)	1210	if (expect_false (!next))
998	{	1211	{
999	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1212	((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 */	1213	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1001	}	1214	}
1002	else if (prev != next)	1215	else if (expect_true (prev != next))
1003	{	1216	{
1004	coro_cctx *prev__cctx;	1217	coro_cctx *prev__cctx;
1005		1218
1006	if (prev->flags & CF_NEW)	1219	if (expect_false (prev->flags & CF_NEW))
1007	{	1220	{
1008	/* create a new empty context */	1221	/* create a new empty context */
1009	Newz (0, prev->cctx, 1, coro_cctx);	1222	Newz (0, prev->cctx, 1, coro_cctx);
1010	prev->flags &= ~CF_NEW;	1223	prev->flags &= ~CF_NEW;
1011	prev->flags |= CF_RUNNING;	1224	prev->flags |= CF_RUNNING;
…		…
1014	prev->flags &= ~CF_RUNNING;	1227	prev->flags &= ~CF_RUNNING;
1015	next->flags |= CF_RUNNING;	1228	next->flags |= CF_RUNNING;
1016		1229
1017	LOCK;	1230	LOCK;
1018		1231
		1232	/* first get rid of the old state */
		1233	save_perl (aTHX_ prev);
		1234
1019	if (next->flags & CF_NEW)	1235	if (expect_false (next->flags & CF_NEW))
1020	{	1236	{
1021	/* need to start coroutine */	1237	/* need to start coroutine */
1022	next->flags &= ~CF_NEW;	1238	next->flags &= ~CF_NEW;
1023	/* first get rid of the old state */
1024	save_perl (aTHX_ prev);
1025	/* setup coroutine call */	1239	/* setup coroutine call */
1026	coro_setup (aTHX_ next);	1240	coro_setup (aTHX_ next);
1027	}	1241	}
1028	else	1242	else
1029	{
1030	/* coroutine already started */
1031	save_perl (aTHX_ prev);
1032	load_perl (aTHX_ next);	1243	load_perl (aTHX_ next);
1033	}
1034		1244
1035	prev__cctx = prev->cctx;	1245	prev__cctx = prev->cctx;
1036		1246
1037	/* possibly "free" the cctx */	1247	/* possibly "free" the cctx */
1038	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	))
1039	{	1253	{
1040	/* 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 */
1041	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));
1042		1256
1043	prev->cctx = 0;	1257	prev->cctx = 0;
1044		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
1045	cctx_put (prev__cctx);	1265	cctx_put (prev__cctx);
1046	}	1266	}
1047		1267
1048	++next->usecount;	1268	++next->usecount;
1049		1269
1050	if (!next->cctx)	1270	if (expect_true (!next->cctx))
1051	next->cctx = cctx_get (aTHX);	1271	next->cctx = cctx_get (aTHX);
1052		1272
		1273	has_throw = !!next->throw;
		1274
1053	if (prev__cctx != next->cctx)	1275	if (expect_false (prev__cctx != next->cctx))
1054	{	1276	{
1055	prev__cctx->top_env = PL_top_env;	1277	prev__cctx->top_env = PL_top_env;
1056	PL_top_env = next->cctx->top_env;	1278	PL_top_env = next->cctx->top_env;
1057	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1279	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1058	}	1280	}
1059		1281
1060	free_coro_mortal (aTHX);	1282	free_coro_mortal (aTHX);
1061	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	}
1062	}	1297	}
1063	}	1298	}
1064		1299
1065	struct transfer_args	1300	struct transfer_args
1066	{	1301	{
1067	struct coro *prev, *next;	1302	struct coro *prev, *next;
1068	};	1303	};
1069		1304
1070	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1305	#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)	1306	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1072		1307
1073	/** high level stuff ********************************************************/	1308	/** high level stuff ********************************************************/
1074		1309
1075	static int	1310	static int
…		…
1101	save_perl (aTHX_ &temp);	1336	save_perl (aTHX_ &temp);
1102	load_perl (aTHX_ coro);	1337	load_perl (aTHX_ coro);
1103		1338
1104	coro_destroy (aTHX_ coro);	1339	coro_destroy (aTHX_ coro);
1105		1340
1106	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1341	load_perl (aTHX_ &temp);
1107		1342
1108	coro->mainstack = 0;	1343	coro->slot = 0;
1109	}	1344	}
1110		1345
1111	cctx_destroy (coro->cctx);	1346	cctx_destroy (coro->cctx);
1112	SvREFCNT_dec (coro->args);	1347	SvREFCNT_dec (coro->args);
1113		1348
…		…
1169	{	1404	{
1170	dTHX;	1405	dTHX;
1171	struct transfer_args ta;	1406	struct transfer_args ta;
1172		1407
1173	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1408	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1174	TRANSFER (ta);	1409	TRANSFER (ta, 1);
1175	}	1410	}
1176		1411
1177	/** Coro ********************************************************************/	1412	/** Coro ********************************************************************/
1178		1413
1179	static void	1414	static void
…		…
1181	{	1416	{
1182	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);
1183	}	1418	}
1184		1419
1185	static SV *	1420	static SV *
1186	coro_deq (pTHX_ int min_prio)	1421	coro_deq (pTHX)
1187	{	1422	{
1188	int prio = PRIO_MAX - PRIO_MIN;	1423	int prio;
1189		1424
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; )	1425	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1195	if (AvFILLp (coro_ready [prio]) >= 0)	1426	if (AvFILLp (coro_ready [prio]) >= 0)
1196	return av_shift (coro_ready [prio]);	1427	return av_shift (coro_ready [prio]);
1197		1428
1198	return 0;	1429	return 0;
1199	}	1430	}
…		…
1201	static int	1432	static int
1202	api_ready (SV *coro_sv)	1433	api_ready (SV *coro_sv)
1203	{	1434	{
1204	dTHX;	1435	dTHX;
1205	struct coro *coro;	1436	struct coro *coro;
		1437	SV *sv_hook;
		1438	void (*xs_hook)(void);
1206		1439
1207	if (SvROK (coro_sv))	1440	if (SvROK (coro_sv))
1208	coro_sv = SvRV (coro_sv);	1441	coro_sv = SvRV (coro_sv);
1209		1442
1210	coro = SvSTATE (coro_sv);	1443	coro = SvSTATE (coro_sv);
…		…
1213	return 0;	1446	return 0;
1214		1447
1215	coro->flags |= CF_READY;	1448	coro->flags |= CF_READY;
1216		1449
1217	LOCK;	1450	LOCK;
		1451
		1452	sv_hook = coro_nready ? 0 : coro_readyhook;
		1453	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1454
1218	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1455	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1219	++coro_nready;	1456	++coro_nready;
		1457
1220	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 ();
1221		1478
1222	return 1;	1479	return 1;
1223	}	1480	}
1224		1481
1225	static int	1482	static int
…		…
1235	SV *prev_sv, *next_sv;	1492	SV *prev_sv, *next_sv;
1236		1493
1237	for (;;)	1494	for (;;)
1238	{	1495	{
1239	LOCK;	1496	LOCK;
1240	next_sv = coro_deq (aTHX_ PRIO_MIN);	1497	next_sv = coro_deq (aTHX);
1241		1498
1242	/* nothing to schedule: call the idle handler */	1499	/* nothing to schedule: call the idle handler */
1243	if (!next_sv)	1500	if (expect_false (!next_sv))
1244	{	1501	{
1245	dSP;	1502	dSP;
1246	UNLOCK;	1503	UNLOCK;
1247		1504
1248	ENTER;	1505	ENTER;
1249	SAVETMPS;	1506	SAVETMPS;
1250		1507
1251	PUSHMARK (SP);	1508	PUSHMARK (SP);
1252	PUTBACK;	1509	PUTBACK;
1253	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1510	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1511	SPAGAIN;
1254		1512
1255	FREETMPS;	1513	FREETMPS;
1256	LEAVE;	1514	LEAVE;
1257	continue;	1515	continue;
1258	}	1516	}
1259		1517
1260	ta->next = SvSTATE (next_sv);	1518	ta->next = SvSTATE (next_sv);
1261		1519
1262	/* cannot transfer to destroyed coros, skip and look for next */	1520	/* cannot transfer to destroyed coros, skip and look for next */
1263	if (ta->next->flags & CF_DESTROYED)	1521	if (expect_false (ta->next->flags & CF_DESTROYED))
1264	{	1522	{
1265	UNLOCK;	1523	UNLOCK;
1266	SvREFCNT_dec (next_sv);	1524	SvREFCNT_dec (next_sv);
1267	/* coro_nready is already taken care of by destroy */	1525	/* coro_nready is already taken care of by destroy */
1268	continue;	1526	continue;
…		…
1313	{	1571	{
1314	dTHX;	1572	dTHX;
1315	struct transfer_args ta;	1573	struct transfer_args ta;
1316		1574
1317	prepare_schedule (aTHX_ &ta);	1575	prepare_schedule (aTHX_ &ta);
1318	TRANSFER (ta);	1576	TRANSFER (ta, 1);
1319	}	1577	}
1320		1578
1321	static int	1579	static int
1322	api_cede (void)	1580	api_cede (void)
1323	{	1581	{
1324	dTHX;	1582	dTHX;
1325	struct transfer_args ta;	1583	struct transfer_args ta;
1326		1584
1327	prepare_cede (aTHX_ &ta);	1585	prepare_cede (aTHX_ &ta);
1328		1586
1329	if (ta.prev != ta.next)	1587	if (expect_true (ta.prev != ta.next))
1330	{	1588	{
1331	TRANSFER (ta);	1589	TRANSFER (ta, 1);
1332	return 1;	1590	return 1;
1333	}	1591	}
1334	else	1592	else
1335	return 0;	1593	return 0;
1336	}	1594	}
…		…
1341	dTHX;	1599	dTHX;
1342	struct transfer_args ta;	1600	struct transfer_args ta;
1343		1601
1344	if (prepare_cede_notself (aTHX_ &ta))	1602	if (prepare_cede_notself (aTHX_ &ta))
1345	{	1603	{
1346	TRANSFER (ta);	1604	TRANSFER (ta, 1);
1347	return 1;	1605	return 1;
1348	}	1606	}
1349	else	1607	else
1350	return 0;	1608	return 0;
1351	}	1609	}
…		…
1370	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1628	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1371		1629
1372	if (coro->flags & CF_RUNNING)	1630	if (coro->flags & CF_RUNNING)
1373	PL_runops = RUNOPS_DEFAULT;	1631	PL_runops = RUNOPS_DEFAULT;
1374	else	1632	else
1375	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)
1376	}	1688	{
		1689	api_cede ();
		1690	self->next = now + self->every;
		1691	}
		1692
		1693	return PerlIOBuf_flush (f);
1377	}	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
1378		1728
1379	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1729	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1380		1730
1381	PROTOTYPES: DISABLE	1731	PROTOTYPES: DISABLE
1382		1732
…		…
1385	#ifdef USE_ITHREADS	1735	#ifdef USE_ITHREADS
1386	MUTEX_INIT (&coro_mutex);	1736	MUTEX_INIT (&coro_mutex);
1387	#endif	1737	#endif
1388	BOOT_PAGESIZE;	1738	BOOT_PAGESIZE;
1389		1739
1390	irsgv = gv_fetchpv ("/", 1, SVt_PV);	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));
1391		1750
1392	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1751	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1393		1752
1394	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1753	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1395	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1754	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1400	main_top_env = PL_top_env;	1759	main_top_env = PL_top_env;
1401		1760
1402	while (main_top_env->je_prev)	1761	while (main_top_env->je_prev)
1403	main_top_env = main_top_env->je_prev;	1762	main_top_env = main_top_env->je_prev;
1404		1763
1405	coroapi.ver = CORO_API_VERSION;	1764	coroapi.ver = CORO_API_VERSION;
		1765	coroapi.rev = CORO_API_REVISION;
1406	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	}
1407		1776
1408	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1777	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1409	}	1778	}
1410		1779
1411	SV *	1780	SV *
1412	new (char *klass, ...)	1781	new (char *klass, ...)
1413	CODE:	1782	CODE:
1414	{	1783	{
1415	struct coro *coro;	1784	struct coro *coro;
		1785	MAGIC *mg;
1416	HV *hv;	1786	HV *hv;
1417	int i;	1787	int i;
1418		1788
1419	Newz (0, coro, 1, struct coro);	1789	Newz (0, coro, 1, struct coro);
1420	coro->args = newAV ();	1790	coro->args = newAV ();
…		…
1423	if (coro_first) coro_first->prev = coro;	1793	if (coro_first) coro_first->prev = coro;
1424	coro->next = coro_first;	1794	coro->next = coro_first;
1425	coro_first = coro;	1795	coro_first = coro;
1426		1796
1427	coro->hv = hv = newHV ();	1797	coro->hv = hv = newHV ();
1428	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;
1429	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1800	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1430		1801
		1802	av_extend (coro->args, items - 1);
1431	for (i = 1; i < items; i++)	1803	for (i = 1; i < items; i++)
1432	av_push (coro->args, newSVsv (ST (i)));	1804	av_push (coro->args, newSVsv (ST (i)));
1433	}	1805	}
1434	OUTPUT:	1806	OUTPUT:
1435	RETVAL	1807	RETVAL
…		…
1446	Coro::cede_notself = 4	1818	Coro::cede_notself = 4
1447	CODE:	1819	CODE:
1448	{	1820	{
1449	struct transfer_args ta;	1821	struct transfer_args ta;
1450		1822
		1823	PUTBACK;
1451	switch (ix)	1824	switch (ix)
1452	{	1825	{
1453	case 0:	1826	case 0:
1454	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1827	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1455	ta.next = 0;	1828	ta.next = 0;
…		…
1474	if (!prepare_cede_notself (aTHX_ &ta))	1847	if (!prepare_cede_notself (aTHX_ &ta))
1475	XSRETURN_EMPTY;	1848	XSRETURN_EMPTY;
1476		1849
1477	break;	1850	break;
1478	}	1851	}
		1852	SPAGAIN;
1479		1853
1480	BARRIER;	1854	BARRIER;
		1855	PUTBACK;
1481	TRANSFER (ta);	1856	TRANSFER (ta, 0);
1482		1857	SPAGAIN; /* might be the sp of a different coroutine now */
1483	if (GIMME_V != G_VOID && ta.next != ta.prev)	1858	/* be extra careful not to ever do anything after TRANSFER */
1484	XSRETURN_YES;
1485	}	1859	}
1486		1860
1487	bool	1861	bool
1488	_destroy (SV *coro_sv)	1862	_destroy (SV *coro_sv)
1489	CODE:	1863	CODE:
1490	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1864	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1491	OUTPUT:	1865	OUTPUT:
1492	RETVAL	1866	RETVAL
1493		1867
1494	void	1868	void
1495	_exit (code)	1869	_exit (int code)
1496	int code
1497	PROTOTYPE: $	1870	PROTOTYPE: $
1498	CODE:	1871	CODE:
1499	_exit (code);	1872	_exit (code);
1500		1873
1501	int	1874	int
…		…
1535	call (Coro::State coro, SV *coderef)	1908	call (Coro::State coro, SV *coderef)
1536	ALIAS:	1909	ALIAS:
1537	eval = 1	1910	eval = 1
1538	CODE:	1911	CODE:
1539	{	1912	{
1540	if (coro->mainstack)	1913	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1541	{	1914	{
1542	struct coro temp;	1915	struct coro temp;
1543	Zero (&temp, 1, struct coro);
1544		1916
1545	if (!(coro->flags & CF_RUNNING))	1917	if (!(coro->flags & CF_RUNNING))
1546	{	1918	{
		1919	PUTBACK;
1547	save_perl (aTHX_ &temp);	1920	save_perl (aTHX_ &temp);
1548	load_perl (aTHX_ coro);	1921	load_perl (aTHX_ coro);
1549	}	1922	}
1550		1923
1551	{	1924	{
1552	dSP;	1925	dSP;
1553	ENTER;	1926	ENTER;
1554	SAVETMPS;	1927	SAVETMPS;
		1928	PUTBACK;
		1929	PUSHSTACK;
1555	PUSHMARK (SP);	1930	PUSHMARK (SP);
1556	PUTBACK;	1931
1557	if (ix)	1932	if (ix)
1558	eval_sv (coderef, 0);	1933	eval_sv (coderef, 0);
1559	else	1934	else
1560	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;
1561	SPAGAIN;	1938	SPAGAIN;
1562	FREETMPS;	1939	FREETMPS;
1563	LEAVE;	1940	LEAVE;
1564	PUTBACK;	1941	PUTBACK;
1565	}	1942	}
1566		1943
1567	if (!(coro->flags & CF_RUNNING))	1944	if (!(coro->flags & CF_RUNNING))
1568	{	1945	{
1569	save_perl (aTHX_ coro);	1946	save_perl (aTHX_ coro);
1570	load_perl (aTHX_ &temp);	1947	load_perl (aTHX_ &temp);
		1948	SPAGAIN;
1571	}	1949	}
1572	}	1950	}
1573	}	1951	}
1574		1952
1575	SV *	1953	SV *
…		…
1587		1965
1588	void	1966	void
1589	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1967	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1590		1968
1591	SV *	1969	SV *
1592	has_stack (Coro::State coro)	1970	has_cctx (Coro::State coro)
1593	PROTOTYPE: $	1971	PROTOTYPE: $
1594	CODE:	1972	CODE:
1595	RETVAL = boolSV (!!coro->cctx);	1973	RETVAL = boolSV (!!coro->cctx);
1596	OUTPUT:	1974	OUTPUT:
1597	RETVAL	1975	RETVAL
…		…
1616	case 1: RETVAL = coro->usecount; break;	1994	case 1: RETVAL = coro->usecount; break;
1617	}	1995	}
1618	OUTPUT:	1996	OUTPUT:
1619	RETVAL	1997	RETVAL
1620		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	}
1621		2027
1622	MODULE = Coro::State PACKAGE = Coro	2028	MODULE = Coro::State PACKAGE = Coro
1623		2029
1624	BOOT:	2030	BOOT:
1625	{	2031	{
1626	int i;	2032	int i;
1627		2033
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);	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);
1631		2037
1632	coro_current = get_sv ("Coro::current", FALSE);	2038	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1633	SvREADONLY_on (coro_current);	2039	SvREADONLY_on (coro_current);
1634		2040
1635	coro_stash = gv_stashpv ("Coro", TRUE);	2041	coro_stash = gv_stashpv ("Coro", TRUE);
1636		2042
1637	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2043	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1638	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2044	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1639	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2045	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1640	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2046	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1643		2049
1644	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2050	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1645	coro_ready[i] = newAV ();	2051	coro_ready[i] = newAV ();
1646		2052
1647	{	2053	{
1648	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 */
1649		2056
1650	coroapi.schedule = api_schedule;	2057	coroapi.schedule = api_schedule;
1651	coroapi.cede = api_cede;	2058	coroapi.cede = api_cede;
1652	coroapi.cede_notself = api_cede_notself;	2059	coroapi.cede_notself = api_cede_notself;
1653	coroapi.ready = api_ready;	2060	coroapi.ready = api_ready;
…		…
1666	PROTOTYPE: $	2073	PROTOTYPE: $
1667	CODE:	2074	CODE:
1668	SvREFCNT_dec (SvRV (coro_current));	2075	SvREFCNT_dec (SvRV (coro_current));
1669	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2076	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1670		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;
		2086
1671	int	2087	int
1672	prio (Coro::State coro, int newprio = 0)	2088	prio (Coro::State coro, int newprio = 0)
1673	ALIAS:	2089	ALIAS:
1674	nice = 1	2090	nice = 1
1675	CODE:	2091	CODE:
…		…
1717	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2133	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1718	AV *invoke_av;	2134	AV *invoke_av;
1719	int i, len;	2135	int i, len;
1720		2136
1721	if (!invoke)	2137	if (!invoke)
		2138	{
		2139	SV *old = PL_diehook;
		2140	PL_diehook = 0;
		2141	SvREFCNT_dec (old);
1722	croak ("\3terminate\2\n");	2142	croak ("\3async_pool terminate\2\n");
		2143	}
1723		2144
1724	SvREFCNT_dec (coro->saved_deffh);	2145	SvREFCNT_dec (coro->saved_deffh);
1725	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2146	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1726		2147
1727	hv_store (hv, "desc", sizeof ("desc") - 1,	2148	hv_store (hv, "desc", sizeof ("desc") - 1,
…		…
1753	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2174	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1754	coro->saved_deffh = 0;	2175	coro->saved_deffh = 0;
1755		2176
1756	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2177	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1757	|| 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);
1758	croak ("\3terminate\2\n");	2183	croak ("\3async_pool terminate\2\n");
		2184	}
1759		2185
1760	av_clear (GvAV (PL_defgv));	2186	av_clear (GvAV (PL_defgv));
1761	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2187	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1762	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2188	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1763		2189
…		…
1766	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2192	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1767	api_trace (coro_current, 0);	2193	api_trace (coro_current, 0);
1768		2194
1769	av_push (av_async_pool, newSVsv (coro_current));	2195	av_push (av_async_pool, newSVsv (coro_current));
1770	}	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
1771		2245
1772		2246
1773	MODULE = Coro::State PACKAGE = Coro::AIO	2247	MODULE = Coro::State PACKAGE = Coro::AIO
1774		2248
1775	SV *	2249	SV *
…		…
1802	PL_laststype = data->laststype;	2276	PL_laststype = data->laststype;
1803	PL_laststatval = data->laststatval;	2277	PL_laststatval = data->laststatval;
1804	PL_statcache = data->statcache;	2278	PL_statcache = data->statcache;
1805	}	2279	}
1806		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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