[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC vs.
Revision 1.227 by root, Sat Apr 5 22:29:54 2008 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#include <stdio.h>	12	#include <stdio.h>
12	#include <errno.h>	13	#include <errno.h>
13	#include <assert.h>	14	#include <assert.h>
		15	#include <inttypes.h> /* portable stdint.h */
14		16
15	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
16	# include <unistd.h>	18	# include <unistd.h>
17	# include <sys/mman.h>	19	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
70	# ifndef IS_PADCONST	72	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	73	# define IS_PADCONST(v) 0
72	# endif	74	# endif
73	#endif	75	#endif
74		76
		77	/* 5.8.8 */
		78	#ifndef GV_NOTQUAL
		79	# define GV_NOTQUAL 0
		80	#endif
		81	#ifndef newSV
		82	# define newSV(l) NEWSV(0,l)
		83	#endif
		84
		85	/* 5.11 */
		86	#ifndef CxHASARGS
		87	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		88	#endif
		89
75	/* 5.8.7 */	90	/* 5.8.7 */
76	#ifndef SvRV_set	91	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	92	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	93	#endif
79		94
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	113	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		114
100	#if __GNUC__ >= 3	115	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	116	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	117	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		118	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	119	#else
104	# define attribute(x)	120	# define attribute(x)
105	# define BARRIER	121	# define BARRIER
		122	# define expect(expr,value) (expr)
106	#endif	123	#endif
		124
		125	#define expect_false(expr) expect ((expr) != 0, 0)
		126	#define expect_true(expr) expect ((expr) != 0, 1)
107		127
108	#define NOINLINE attribute ((noinline))	128	#define NOINLINE attribute ((noinline))
109		129
110	#include "CoroAPI.h"	130	#include "CoroAPI.h"
111		131
…		…
130	static size_t coro_stacksize = CORO_STACKSIZE;	150	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	151	static struct CoroAPI coroapi;
132	static AV main_mainstack; / used to differentiate between $main and others */	152	static AV main_mainstack; / used to differentiate between $main and others */
133	static JMPENV *main_top_env;	153	static JMPENV *main_top_env;
134	static HV coro_state_stash, coro_stash;	154	static HV coro_state_stash, coro_stash;
135	static SV coro_mortal; / will be freed after next transfer */	155	static volatile SV coro_mortal; / will be freed after next transfer */
		156
		157	static GV irsgv; / $/ */
		158	static GV stdoutgv; / STDOUT /
		159	static SV *rv_diehook;
		160	static SV *rv_warnhook;
		161	static HV hv_sig; / %SIG */
136		162
137	/* async_pool helper stuff */	163	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	164	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	165	static SV *sv_pool_size;
140	static AV *av_async_pool;	166	static AV *av_async_pool;
…		…
176	CF_READY = 0x0002, /* coroutine is ready */	202	CF_READY = 0x0002, /* coroutine is ready */
177	CF_NEW = 0x0004, /* has never been switched to */	203	CF_NEW = 0x0004, /* has never been switched to */
178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	204	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179	};	205	};
180		206
		207	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		208	typedef struct {
		209	SV *defsv;
		210	AV *defav;
		211	SV *errsv;
		212	SV *irsgv;
		213	#define VAR(name,type) type name;
		214	# include "state.h"
		215	#undef VAR
		216	} perl_slots;
		217
		218	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		219
181	/* this is a structure representing a perl-level coroutine */	220	/* this is a structure representing a perl-level coroutine */
182	struct coro {	221	struct coro {
183	/* the c coroutine allocated to this perl coroutine, if any */	222	/* the c coroutine allocated to this perl coroutine, if any */
184	coro_cctx *cctx;	223	coro_cctx *cctx;
185		224
		225	/* process data */
		226	AV *mainstack;
		227	perl_slots slot; / basically the saved sp */
		228
186	/* data associated with this coroutine (initial args) */	229	AV args; / data associated with this coroutine (initial args) */
187	AV *args;	230	int refcnt; /* coroutines are refcounted, yes */
188	int refcnt;
189	int save; /* CORO_SAVE flags */
190	int flags; /* CF_ flags */	231	int flags; /* CF_ flags */
191		232	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		233
204	/* statistics */	234	/* statistics */
205	int usecount; /* number of switches to this coro */	235	int usecount; /* number of transfers to this coro */
206		236
207	/* coro process data */	237	/* coro process data */
208	int prio;	238	int prio;
		239	SV throw; / exception to be thrown */
		240
		241	/* async_pool */
		242	SV *saved_deffh;
209		243
210	/* linked list */	244	/* linked list */
211	struct coro next, prev;	245	struct coro next, prev;
212	HV hv; / the perl hash associated with this coro, if any */
213	};	246	};
214		247
215	typedef struct coro *Coro__State;	248	typedef struct coro *Coro__State;
216	typedef struct coro *Coro__State_or_hashref;	249	typedef struct coro *Coro__State_or_hashref;
217		250
…		…
229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	262	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
230	static int coro_nready;	263	static int coro_nready;
231	static struct coro *coro_first;	264	static struct coro *coro_first;
232		265
233	/ lowlevel stuff ********************************************************/	266	/ lowlevel stuff ********************************************************/
		267
		268	static SV *
		269	coro_get_sv (pTHX_ const char *name, int create)
		270	{
		271	#if PERL_VERSION_ATLEAST (5,9,0)
		272	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		273	get_sv (name, create);
		274	#endif
		275	return get_sv (name, create);
		276	}
		277
		278	static AV *
		279	coro_get_av (pTHX_ const char *name, int create)
		280	{
		281	#if PERL_VERSION_ATLEAST (5,9,0)
		282	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		283	get_av (name, create);
		284	#endif
		285	return get_av (name, create);
		286	}
		287
		288	static HV *
		289	coro_get_hv (pTHX_ const char *name, int create)
		290	{
		291	#if PERL_VERSION_ATLEAST (5,9,0)
		292	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		293	get_hv (name, create);
		294	#endif
		295	return get_hv (name, create);
		296	}
234		297
235	static AV *	298	static AV *
236	coro_clone_padlist (pTHX_ CV *cv)	299	coro_clone_padlist (pTHX_ CV *cv)
237	{	300	{
238	AV *padlist = CvPADLIST (cv);	301	AV *padlist = CvPADLIST (cv);
…		…
286		349
287	/* casting is fun. */	350	/* casting is fun. */
288	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	351	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
289	free_padlist (aTHX_ padlist);	352	free_padlist (aTHX_ padlist);
290		353
291	SvREFCNT_dec (av);
292
293	return 0;	354	return 0;
294	}	355	}
295		356
296	#define PERL_MAGIC_coro PERL_MAGIC_ext	357	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		358	#define CORO_MAGIC_type_state PERL_MAGIC_ext
297		359
298	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	360	static MGVTBL coro_cv_vtbl = {
		361	0, 0, 0, 0,
		362	coro_cv_free
		363	};
299		364
300	#define CORO_MAGIC(cv) \	365	#define CORO_MAGIC(sv,type) \
301	SvMAGIC (cv) \	366	SvMAGIC (sv) \
302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	367	? SvMAGIC (sv)->mg_type == type \
303	? SvMAGIC (cv) \	368	? SvMAGIC (sv) \
304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	369	: mg_find (sv, type) \
305	: 0	370	: 0
		371
		372	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		373	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
306		374
307	static struct coro *	375	static struct coro *
308	SvSTATE_ (pTHX_ SV *coro)	376	SvSTATE_ (pTHX_ SV *coro)
309	{	377	{
310	HV *stash;	378	HV *stash;
311	MAGIC *mg;	379	MAGIC *mg;
312		380
313	if (SvROK (coro))	381	if (SvROK (coro))
314	coro = SvRV (coro);	382	coro = SvRV (coro);
315		383
316	if (SvTYPE (coro) != SVt_PVHV)	384	if (expect_false (SvTYPE (coro) != SVt_PVHV))
317	croak ("Coro::State object required");	385	croak ("Coro::State object required");
318		386
319	stash = SvSTASH (coro);	387	stash = SvSTASH (coro);
320	if (stash != coro_stash && stash != coro_state_stash)	388	if (expect_false (stash != coro_stash && stash != coro_state_stash))
321	{	389	{
322	/* very slow, but rare, check */	390	/* very slow, but rare, check */
323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	391	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
324	croak ("Coro::State object required");	392	croak ("Coro::State object required");
325	}	393	}
326		394
327	mg = CORO_MAGIC (coro);	395	mg = CORO_MAGIC_state (coro);
328	return (struct coro *)mg->mg_ptr;	396	return (struct coro *)mg->mg_ptr;
329	}	397	}
330		398
331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	399	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
332		400
333	/* the next two functions merely cache the padlists */	401	/* the next two functions merely cache the padlists */
334	static void	402	static void
335	get_padlist (pTHX_ CV *cv)	403	get_padlist (pTHX_ CV *cv)
336	{	404	{
337	MAGIC *mg = CORO_MAGIC (cv);	405	MAGIC *mg = CORO_MAGIC_cv (cv);
338	AV *av;	406	AV *av;
339		407
340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	408	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	409	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
342	else	410	else
343	{	411	{
344	#if CORO_PREFER_PERL_FUNCTIONS	412	#if CORO_PREFER_PERL_FUNCTIONS
345	/* this is probably cleaner, but also slower? */	413	/* this is probably cleaner, but also slower? */
…		…
354	}	422	}
355		423
356	static void	424	static void
357	put_padlist (pTHX_ CV *cv)	425	put_padlist (pTHX_ CV *cv)
358	{	426	{
359	MAGIC *mg = CORO_MAGIC (cv);	427	MAGIC *mg = CORO_MAGIC_cv (cv);
360	AV *av;	428	AV *av;
361		429
362	if (!mg)	430	if (expect_false (!mg))
363	{	431	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		432
370	av = (AV *)mg->mg_obj;	433	av = (AV *)mg->mg_obj;
371		434
372	if (AvFILLp (av) >= AvMAX (av))	435	if (expect_false (AvFILLp (av) >= AvMAX (av)))
373	av_extend (av, AvMAX (av) + 1);	436	av_extend (av, AvMAX (av) + 1);
374		437
375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	438	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
376	}	439	}
377		440
378	/ load & save, init *****************************************************/	441	/ 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		442
385	static void	443	static void
386	load_perl (pTHX_ Coro__State c)	444	load_perl (pTHX_ Coro__State c)
387	{	445	{
		446	perl_slots *slot = c->slot;
		447	c->slot = 0;
		448
		449	PL_mainstack = c->mainstack;
		450
		451	GvSV (PL_defgv) = slot->defsv;
		452	GvAV (PL_defgv) = slot->defav;
		453	GvSV (PL_errgv) = slot->errsv;
		454	GvSV (irsgv) = slot->irsgv;
		455
388	#define VAR(name,type) PL_ ## name = c->name;	456	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	457	# include "state.h"
390	#undef VAR	458	#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		459
412	{	460	{
413	dSP;	461	dSP;
		462
414	CV *cv;	463	CV *cv;
415		464
416	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
417	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
418	{	467	{
419	put_padlist (aTHX_ cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
420	CvDEPTH (cv) = PTR2IV (POPs);	469	CvDEPTH (cv) = PTR2IV (POPs);
421	CvPADLIST (cv) = (AV *)POPs;	470	CvPADLIST (cv) = (AV *)POPs;
422	}	471	}
…		…
441		490
442	XPUSHs (Nullsv);	491	XPUSHs (Nullsv);
443	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
444	for (;;)	493	for (;;)
445	{	494	{
446	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
447	{	496	{
448	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
449		498
450	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)	499	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
451	{	500	{
452	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
453		502
454	if (CvDEPTH (cv))	503	if (expect_true (CvDEPTH (cv)))
455	{	504	{
456	EXTEND (SP, 3);	505	EXTEND (SP, 3);
457	PUSHs ((SV *)CvPADLIST (cv));	506	PUSHs ((SV *)CvPADLIST (cv));
458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
459	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
…		…
462	get_padlist (aTHX_ cv);	511	get_padlist (aTHX_ cv);
463	}	512	}
464	}	513	}
465	}	514	}
466		515
467	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
468	break;	517	break;
469		518
470	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
471	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
472	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
473	}	522	}
474		523
475	PUTBACK;	524	PUTBACK;
476	}	525	}
477		526
478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	527	/* allocate some space on the context stack for our purposes */
479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	528	/* we manually unroll here, as usually 2 slots is enough */
480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	530	if (SLOT_COUNT >= 2) CXINC;
482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	531	if (SLOT_COUNT >= 3) CXINC;
		532	{
		533	int i;
		534	for (i = 3; i < SLOT_COUNT; ++i)
		535	CXINC;
		536	}
		537	cxstack_ix -= SLOT_COUNT; /* undo allocation */
483		538
		539	c->mainstack = PL_mainstack;
		540
		541	{
		542	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		543
		544	slot->defav = GvAV (PL_defgv);
		545	slot->defsv = DEFSV;
		546	slot->errsv = ERRSV;
		547	slot->irsgv = GvSV (irsgv);
		548
484	#define VAR(name,type)c->name = PL_ ## name;	549	#define VAR(name,type) slot->name = PL_ ## name;
485	# include "state.h"	550	# include "state.h"
486	#undef VAR	551	#undef VAR
		552	}
487	}	553	}
488		554
489	/*	555	/*
490	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
…		…
496	# define coro_init_stacks init_stacks	562	# define coro_init_stacks init_stacks
497	#else	563	#else
498	static void	564	static void
499	coro_init_stacks (pTHX)	565	coro_init_stacks (pTHX)
500	{	566	{
501	PL_curstackinfo = new_stackinfo(64, 6);	567	PL_curstackinfo = new_stackinfo(32, 8);
502	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
503	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505		571
506	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
507	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509		575
510	New(50,PL_tmps_stack,64,SV*);	576	New(50,PL_tmps_stack,32,SV*);
511	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
512	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
513	PL_tmps_max = 64;	579	PL_tmps_max = 32;
514		580
515	New(54,PL_markstack,16,I32);	581	New(54,PL_markstack,16,I32);
516	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
517	PL_markstack_max = PL_markstack + 16;	583	PL_markstack_max = PL_markstack + 16;
518		584
519	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
520	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
521	#endif	587	#endif
522		588
523	New(54,PL_scopestack,16,I32);	589	New(54,PL_scopestack,8,I32);
524	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
525	PL_scopestack_max = 16;	591	PL_scopestack_max = 8;
526		592
527	New(54,PL_savestack,64,ANY);	593	New(54,PL_savestack,24,ANY);
528	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
529	PL_savestack_max = 64;	595	PL_savestack_max = 24;
530		596
531	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,9,0)
532	New(54,PL_retstack,4,OP*);	598	New(54,PL_retstack,4,OP*);
533	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
534	PL_retstack_max = 4;	600	PL_retstack_max = 4;
…		…
540	* destroy the stacks, the callchain etc...	606	* destroy the stacks, the callchain etc...
541	*/	607	*/
542	static void	608	static void
543	coro_destroy_stacks (pTHX)	609	coro_destroy_stacks (pTHX)
544	{	610	{
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)	611	while (PL_curstackinfo->si_next)
563	PL_curstackinfo = PL_curstackinfo->si_next;	612	PL_curstackinfo = PL_curstackinfo->si_next;
564		613
565	while (PL_curstackinfo)	614	while (PL_curstackinfo)
566	{	615	{
…		…
584	}	633	}
585		634
586	static size_t	635	static size_t
587	coro_rss (pTHX_ struct coro *coro)	636	coro_rss (pTHX_ struct coro *coro)
588	{	637	{
589	size_t rss = sizeof (coro);	638	size_t rss = sizeof (*coro);
590		639
591	if (coro->mainstack)	640	if (coro->mainstack)
592	{	641	{
		642	perl_slots tmp_slot;
		643	perl_slots *slot;
		644
593	if (coro->flags & CF_RUNNING)	645	if (coro->flags & CF_RUNNING)
594	{	646	{
		647	slot = &tmp_slot;
		648
595	#define VAR(name,type)coro->name = PL_ ## name;	649	#define VAR(name,type) slot->name = PL_ ## name;
596	# include "state.h"	650	# include "state.h"
597	#undef VAR	651	#undef VAR
598	}	652	}
		653	else
		654	slot = coro->slot;
599		655
600	rss += sizeof (coro->curstackinfo);	656	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);	657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
604	rss += coro->tmps_max * sizeof (SV *);	659	rss += slot->tmps_max * sizeof (SV *);
605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
606	rss += coro->scopestack_max * sizeof (I32);	661	rss += slot->scopestack_max * sizeof (I32);
607	rss += coro->savestack_max * sizeof (ANY);	662	rss += slot->savestack_max * sizeof (ANY);
608		663
609	#if !PERL_VERSION_ATLEAST (5,9,0)	664	#if !PERL_VERSION_ATLEAST (5,9,0)
610	rss += coro->retstack_max * sizeof (OP *);	665	rss += slot->retstack_max * sizeof (OP *);
611	#endif	666	#endif
612	}	667	}
613		668
614	return rss;	669	return rss;
615	}	670	}
616		671
617	/ coroutine stack handling **********************************************/	672	/ coroutine stack handling **********************************************/
618		673
		674	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		675	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		676
		677	/*
		678	* This overrides the default magic get method of %SIG elements.
		679	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		680	* and instead of tryign to save and restore the hash elements, we just provide
		681	* readback here.
		682	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		683	* not expecting this to actually change the hook. This is a potential problem
		684	* when a schedule happens then, but we ignore this.
		685	*/
		686	static int
		687	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		688	{
		689	const char *s = MgPV_nolen_const (mg);
		690
		691	if (*s == '_')
		692	{
		693	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		694	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		695	}
		696
		697	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		698	}
		699
		700	static int
		701	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		702	{
		703	const char *s = MgPV_nolen_const (mg);
		704
		705	if (*s == '_')
		706	{
		707	SV **svp = 0;
		708
		709	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		710	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		711
		712	if (svp)
		713	{
		714	SV old = svp;
		715	*svp = newSVsv (sv);
		716	SvREFCNT_dec (old);
		717	return;
		718	}
		719	}
		720
		721	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		722	}
		723
619	static void	724	static void
620	setup_coro (pTHX_ struct coro *coro)	725	coro_setup (pTHX_ struct coro *coro)
621	{	726	{
622	/*	727	/*
623	* emulate part of the perl startup here.	728	* emulate part of the perl startup here.
624	*/	729	*/
625	coro_init_stacks (aTHX);	730	coro_init_stacks (aTHX);
…		…
627	PL_runops = RUNOPS_DEFAULT;	732	PL_runops = RUNOPS_DEFAULT;
628	PL_curcop = &PL_compiling;	733	PL_curcop = &PL_compiling;
629	PL_in_eval = EVAL_NULL;	734	PL_in_eval = EVAL_NULL;
630	PL_comppad = 0;	735	PL_comppad = 0;
631	PL_curpm = 0;	736	PL_curpm = 0;
		737	PL_curpad = 0;
632	PL_localizing = 0;	738	PL_localizing = 0;
633	PL_dirty = 0;	739	PL_dirty = 0;
634	PL_restartop = 0;	740	PL_restartop = 0;
635		741
		742	/* recreate the die/warn hooks */
		743	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		744	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		745
		746	GvSV (PL_defgv) = newSV (0);
		747	GvAV (PL_defgv) = coro->args; coro->args = 0;
		748	GvSV (PL_errgv) = newSV (0);
		749	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		750	PL_rs = newSVsv (GvSV (irsgv));
		751	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
		752
636	{	753	{
637	dSP;	754	dSP;
638	LOGOP myop;	755	LOGOP myop;
639		756
640	SvREFCNT_dec (GvAV (PL_defgv));
641	GvAV (PL_defgv) = coro->args; coro->args = 0;
642
643	Zero (&myop, 1, LOGOP);	757	Zero (&myop, 1, LOGOP);
644	myop.op_next = Nullop;	758	myop.op_next = Nullop;
645	myop.op_flags = OPf_WANT_VOID;	759	myop.op_flags = OPf_WANT_VOID;
646		760
647	PUSHMARK (SP);	761	PUSHMARK (SP);
648	XPUSHs (av_shift (GvAV (PL_defgv)));	762	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
649	PUTBACK;	763	PUTBACK;
650	PL_op = (OP *)&myop;	764	PL_op = (OP *)&myop;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	765	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;	766	SPAGAIN;
653	}	767	}
654		768
655	ENTER; /* necessary e.g. for dounwind */	769	/* this newly created coroutine might be run on an existing cctx which most
		770	* likely was suspended in set_stacklevel, called from entersub.
		771	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		772	* so we ENTER here for symmetry
		773	*/
		774	ENTER;
		775	}
		776
		777	static void
		778	coro_destroy (pTHX_ struct coro *coro)
		779	{
		780	if (!IN_DESTRUCT)
		781	{
		782	/* restore all saved variables and stuff */
		783	LEAVE_SCOPE (0);
		784	assert (PL_tmps_floor == -1);
		785
		786	/* free all temporaries */
		787	FREETMPS;
		788	assert (PL_tmps_ix == -1);
		789
		790	/* unwind all extra stacks */
		791	POPSTACK_TO (PL_mainstack);
		792
		793	/* unwind main stack */
		794	dounwind (-1);
		795	}
		796
		797	SvREFCNT_dec (GvSV (PL_defgv));
		798	SvREFCNT_dec (GvAV (PL_defgv));
		799	SvREFCNT_dec (GvSV (PL_errgv));
		800	SvREFCNT_dec (PL_defoutgv);
		801	SvREFCNT_dec (PL_rs);
		802	SvREFCNT_dec (GvSV (irsgv));
		803
		804	SvREFCNT_dec (PL_diehook);
		805	SvREFCNT_dec (PL_warnhook);
		806
		807	SvREFCNT_dec (coro->saved_deffh);
		808	SvREFCNT_dec (coro->throw);
		809
		810	coro_destroy_stacks (aTHX);
656	}	811	}
657		812
658	static void	813	static void
659	free_coro_mortal (pTHX)	814	free_coro_mortal (pTHX)
660	{	815	{
661	if (coro_mortal)	816	if (expect_true (coro_mortal))
662	{	817	{
663	SvREFCNT_dec (coro_mortal);	818	SvREFCNT_dec (coro_mortal);
664	coro_mortal = 0;	819	coro_mortal = 0;
665	}	820	}
666	}	821	}
…		…
695	bot = PL_stack_base + cx->blk_oldsp + 1;	850	bot = PL_stack_base + cx->blk_oldsp + 1;
696	top = cx->blk_gimme == G_ARRAY ? SP + 1	851	top = cx->blk_gimme == G_ARRAY ? SP + 1
697	: cx->blk_gimme == G_SCALAR ? bot + 1	852	: cx->blk_gimme == G_SCALAR ? bot + 1
698	: bot;	853	: bot;
699		854
		855	av_extend (av, top - bot);
700	while (bot < top)	856	while (bot < top)
701	av_push (av, SvREFCNT_inc (*bot++));	857	av_push (av, SvREFCNT_inc (*bot++));
702		858
703	PL_runops = RUNOPS_DEFAULT;	859	PL_runops = RUNOPS_DEFAULT;
704	ENTER;	860	ENTER;
…		…
744	SAVETMPS;	900	SAVETMPS;
745	EXTEND (SP, 3);	901	EXTEND (SP, 3);
746	PUSHMARK (SP);	902	PUSHMARK (SP);
747	PUSHs (&PL_sv_yes);	903	PUSHs (&PL_sv_yes);
748	PUSHs (fullname);	904	PUSHs (fullname);
749	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	905	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
750	PUTBACK;	906	PUTBACK;
751	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	907	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);	908	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
753	SPAGAIN;	909	SPAGAIN;
754	FREETMPS;	910	FREETMPS;
…		…
790		946
791	/* inject a fake call to Coro::State::_cctx_init into the execution */	947	/* 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 */	948	/* _cctx_init should be careful, as it could be called at almost any time */
793	/* during execution of a perl program */	949	/* during execution of a perl program */
794	static void NOINLINE	950	static void NOINLINE
795	prepare_cctx (pTHX_ coro_cctx *cctx)	951	cctx_prepare (pTHX_ coro_cctx *cctx)
796	{	952	{
797	dSP;	953	dSP;
798	LOGOP myop;	954	LOGOP myop;
799		955
800	PL_top_env = &PL_start_env;	956	PL_top_env = &PL_start_env;
…		…
818		974
819	/*	975	/*
820	* this is a _very_ stripped down perl interpreter ;)	976	* this is a _very_ stripped down perl interpreter ;)
821	*/	977	*/
822	static void	978	static void
823	coro_run (void *arg)	979	cctx_run (void *arg)
824	{	980	{
825	dTHX;	981	dTHX;
826		982
827	/* coro_run is the alternative tail of transfer(), so unlock here. */	983	/* cctx_run is the alternative tail of transfer(), so unlock here. */
828	UNLOCK;	984	UNLOCK;
829		985
830	/* we now skip the entersub that lead to transfer() */	986	/* we now skip the entersub that lead to transfer() */
831	PL_op = PL_op->op_next;	987	PL_op = PL_op->op_next;
832		988
833	/* inject a fake subroutine call to cctx_init */	989	/* inject a fake subroutine call to cctx_init */
834	prepare_cctx (aTHX_ (coro_cctx *)arg);	990	cctx_prepare (aTHX_ (coro_cctx *)arg);
835		991
836	/* somebody or something will hit me for both perl_run and PL_restartop */	992	/* somebody or something will hit me for both perl_run and PL_restartop */
837	PL_restartop = PL_op;	993	PL_restartop = PL_op;
838	perl_run (PL_curinterp);	994	perl_run (PL_curinterp);
839		995
…		…
858	++cctx_count;	1014	++cctx_count;
859		1015
860	Newz (0, cctx, 1, coro_cctx);	1016	Newz (0, cctx, 1, coro_cctx);
861		1017
862	#if HAVE_MMAP	1018	#if HAVE_MMAP
863
864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1019	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
865	/* mmap supposedly does allocate-on-write for us */	1020	/* 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);	1021	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
867		1022
868	if (cctx->sptr != (void *)-1)	1023	if (cctx->sptr != (void *)-1)
…		…
889	stack_start = cctx->sptr;	1044	stack_start = cctx->sptr;
890	stack_size = cctx->ssize;	1045	stack_size = cctx->ssize;
891	}	1046	}
892		1047
893	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1048	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
894	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1049	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
895		1050
896	return cctx;	1051	return cctx;
897	}	1052	}
898		1053
899	static void	1054	static void
…		…
916	Safefree (cctx->sptr);	1071	Safefree (cctx->sptr);
917		1072
918	Safefree (cctx);	1073	Safefree (cctx);
919	}	1074	}
920		1075
		1076	/* wether this cctx should be destructed */
		1077	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1078
921	static coro_cctx *	1079	static coro_cctx *
922	cctx_get (pTHX)	1080	cctx_get (pTHX)
923	{	1081	{
924	while (cctx_first)	1082	while (expect_true (cctx_first))
925	{	1083	{
926	coro_cctx *cctx = cctx_first;	1084	coro_cctx *cctx = cctx_first;
927	cctx_first = cctx->next;	1085	cctx_first = cctx->next;
928	--cctx_idle;	1086	--cctx_idle;
929		1087
930	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1088	if (expect_true (!CCTX_EXPIRED (cctx)))
931	return cctx;	1089	return cctx;
932		1090
933	cctx_destroy (cctx);	1091	cctx_destroy (cctx);
934	}	1092	}
935		1093
…		…
938		1096
939	static void	1097	static void
940	cctx_put (coro_cctx *cctx)	1098	cctx_put (coro_cctx *cctx)
941	{	1099	{
942	/* free another cctx if overlimit */	1100	/* free another cctx if overlimit */
943	if (cctx_idle >= MAX_IDLE_CCTX)	1101	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
944	{	1102	{
945	coro_cctx *first = cctx_first;	1103	coro_cctx *first = cctx_first;
946	cctx_first = first->next;	1104	cctx_first = first->next;
947	--cctx_idle;	1105	--cctx_idle;
948		1106
…		…
954	cctx_first = cctx;	1112	cctx_first = cctx;
955	}	1113	}
956		1114
957	/ coroutine switching ***************************************************/	1115	/ coroutine switching ***************************************************/
958		1116
959	static void NOINLINE	1117	static void
960	transfer_check (pTHX_ struct coro prev, struct coro next)	1118	transfer_check (pTHX_ struct coro prev, struct coro next)
961	{	1119	{
962	if (prev != next)	1120	if (expect_true (prev != next))
963	{	1121	{
964	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))	1122	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");	1123	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
966		1124
967	if (next->flags & CF_RUNNING)	1125	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");	1126	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
969		1127
970	if (next->flags & CF_DESTROYED)	1128	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");	1129	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
972		1130
		1131	if (
		1132	#if PERL_VERSION_ATLEAST (5,9,0)
		1133	expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
		1134	#else
973	if (PL_lex_state != LEX_NOTPARSING)	1135	expect_false (PL_lex_state != LEX_NOTPARSING)
		1136	#endif
		1137	)
974	croak ("Coro::State::transfer called while parsing, but this is not supported");	1138	croak ("Coro::State::transfer called while parsing, but this is not supported");
975	}	1139	}
976	}	1140	}
977		1141
978	/* always use the TRANSFER macro */	1142	/* always use the TRANSFER macro */
979	static void NOINLINE	1143	static void NOINLINE
980	transfer (pTHX_ struct coro prev, struct coro next)	1144	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
981	{	1145	{
982	dSTACKLEVEL;	1146	dSTACKLEVEL;
		1147	static volatile int has_throw;
983		1148
984	/* sometimes transfer is only called to set idle_sp */	1149	/* sometimes transfer is only called to set idle_sp */
985	if (!next)	1150	if (expect_false (!next))
986	{	1151	{
987	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1152	((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 */	1153	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
989	}	1154	}
990	else if (prev != next)	1155	else if (expect_true (prev != next))
991	{	1156	{
992	coro_cctx *prev__cctx;	1157	coro_cctx *prev__cctx;
993		1158
994	if (prev->flags & CF_NEW)	1159	if (expect_false (prev->flags & CF_NEW))
995	{	1160	{
996	/* create a new empty context */	1161	/* create a new empty context */
997	Newz (0, prev->cctx, 1, coro_cctx);	1162	Newz (0, prev->cctx, 1, coro_cctx);
998	prev->flags &= ~CF_NEW;	1163	prev->flags &= ~CF_NEW;
999	prev->flags \|= CF_RUNNING;	1164	prev->flags \|= CF_RUNNING;
…		…
1002	prev->flags &= ~CF_RUNNING;	1167	prev->flags &= ~CF_RUNNING;
1003	next->flags \|= CF_RUNNING;	1168	next->flags \|= CF_RUNNING;
1004		1169
1005	LOCK;	1170	LOCK;
1006		1171
		1172	/* first get rid of the old state */
		1173	save_perl (aTHX_ prev);
		1174
1007	if (next->flags & CF_NEW)	1175	if (expect_false (next->flags & CF_NEW))
1008	{	1176	{
1009	/* need to start coroutine */	1177	/* need to start coroutine */
1010	next->flags &= ~CF_NEW;	1178	next->flags &= ~CF_NEW;
1011	/* first get rid of the old state */
1012	save_perl (aTHX_ prev);
1013	/* setup coroutine call */	1179	/* setup coroutine call */
1014	setup_coro (aTHX_ next);	1180	coro_setup (aTHX_ next);
1015	}	1181	}
1016	else	1182	else
1017	{
1018	/* coroutine already started */
1019	save_perl (aTHX_ prev);
1020	load_perl (aTHX_ next);	1183	load_perl (aTHX_ next);
1021	}
1022		1184
1023	prev__cctx = prev->cctx;	1185	prev__cctx = prev->cctx;
1024		1186
1025	/* possibly "free" the cctx */	1187	/* possibly "free" the cctx */
1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1188	if (expect_true (
		1189	prev__cctx->idle_sp == STACKLEVEL
		1190	&& !(prev__cctx->flags & CC_TRACE)
		1191	&& !force_cctx
		1192	))
1027	{	1193	{
1028	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1194	/* 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));	1195	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1030		1196
1031	prev->cctx = 0;	1197	prev->cctx = 0;
1032		1198
		1199	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1200	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1201	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1202	if (!next->cctx)
		1203	next->cctx = cctx_get (aTHX);
		1204
1033	cctx_put (prev__cctx);	1205	cctx_put (prev__cctx);
1034	}	1206	}
1035		1207
1036	++next->usecount;	1208	++next->usecount;
1037		1209
1038	if (!next->cctx)	1210	if (expect_true (!next->cctx))
1039	next->cctx = cctx_get (aTHX);	1211	next->cctx = cctx_get (aTHX);
1040		1212
		1213	has_throw = !!next->throw;
		1214
1041	if (prev__cctx != next->cctx)	1215	if (expect_false (prev__cctx != next->cctx))
1042	{	1216	{
1043	prev__cctx->top_env = PL_top_env;	1217	prev__cctx->top_env = PL_top_env;
1044	PL_top_env = next->cctx->top_env;	1218	PL_top_env = next->cctx->top_env;
1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1219	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1046	}	1220	}
1047		1221
1048	free_coro_mortal (aTHX);	1222	free_coro_mortal (aTHX);
1049	UNLOCK;	1223	UNLOCK;
		1224
		1225	if (expect_false (has_throw))
		1226	{
		1227	struct coro *coro = SvSTATE (coro_current);
		1228
		1229	if (coro->throw)
		1230	{
		1231	SV *exception = coro->throw;
		1232	coro->throw = 0;
		1233	sv_setsv (ERRSV, exception);
		1234	croak (0);
		1235	}
		1236	}
1050	}	1237	}
1051	}	1238	}
1052		1239
1053	struct transfer_args	1240	struct transfer_args
1054	{	1241	{
1055	struct coro prev, next;	1242	struct coro prev, next;
1056	};	1243	};
1057		1244
1058	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1245	#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)	1246	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1060		1247
1061	/ high level stuff ******************************************************/	1248	/ high level stuff ******************************************************/
1062		1249
1063	static int	1250	static int
…		…
1081		1268
1082	if (coro->mainstack && coro->mainstack != main_mainstack)	1269	if (coro->mainstack && coro->mainstack != main_mainstack)
1083	{	1270	{
1084	struct coro temp;	1271	struct coro temp;
1085		1272
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)	1273	if (coro->flags & CF_RUNNING)
1092	croak ("FATAL: tried to destroy currently running coroutine");	1274	croak ("FATAL: tried to destroy currently running coroutine");
1093		1275
1094	save_perl (aTHX_ &temp);	1276	save_perl (aTHX_ &temp);
1095	load_perl (aTHX_ coro);	1277	load_perl (aTHX_ coro);
1096		1278
1097	coro_destroy_stacks (aTHX);	1279	coro_destroy (aTHX_ coro);
1098		1280
1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1281	load_perl (aTHX_ &temp);
1100		1282
1101	coro->mainstack = 0;	1283	coro->slot = 0;
1102	}	1284	}
1103		1285
1104	cctx_destroy (coro->cctx);	1286	cctx_destroy (coro->cctx);
1105	SvREFCNT_dec (coro->args);	1287	SvREFCNT_dec (coro->args);
1106		1288
…		…
1162	{	1344	{
1163	dTHX;	1345	dTHX;
1164	struct transfer_args ta;	1346	struct transfer_args ta;
1165		1347
1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1348	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167	TRANSFER (ta);	1349	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	}	1350	}
1182		1351
1183	/ Coro ******************************************************************/	1352	/ Coro ******************************************************************/
1184		1353
1185	static void	1354	static void
…		…
1187	{	1356	{
1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1357	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1189	}	1358	}
1190		1359
1191	static SV *	1360	static SV *
1192	coro_deq (pTHX_ int min_prio)	1361	coro_deq (pTHX)
1193	{	1362	{
1194	int prio = PRIO_MAX - PRIO_MIN;	1363	int prio;
1195		1364
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; )	1365	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1201	if (AvFILLp (coro_ready [prio]) >= 0)	1366	if (AvFILLp (coro_ready [prio]) >= 0)
1202	return av_shift (coro_ready [prio]);	1367	return av_shift (coro_ready [prio]);
1203		1368
1204	return 0;	1369	return 0;
1205	}	1370	}
…		…
1241	SV prev_sv, next_sv;	1406	SV prev_sv, next_sv;
1242		1407
1243	for (;;)	1408	for (;;)
1244	{	1409	{
1245	LOCK;	1410	LOCK;
1246	next_sv = coro_deq (aTHX_ PRIO_MIN);	1411	next_sv = coro_deq (aTHX);
1247		1412
1248	/* nothing to schedule: call the idle handler */	1413	/* nothing to schedule: call the idle handler */
1249	if (!next_sv)	1414	if (expect_false (!next_sv))
1250	{	1415	{
1251	dSP;	1416	dSP;
1252	UNLOCK;	1417	UNLOCK;
1253		1418
1254	ENTER;	1419	ENTER;
1255	SAVETMPS;	1420	SAVETMPS;
1256		1421
1257	PUSHMARK (SP);	1422	PUSHMARK (SP);
1258	PUTBACK;	1423	PUTBACK;
1259	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1424	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1425	SPAGAIN;
1260		1426
1261	FREETMPS;	1427	FREETMPS;
1262	LEAVE;	1428	LEAVE;
1263	continue;	1429	continue;
1264	}	1430	}
1265		1431
1266	ta->next = SvSTATE (next_sv);	1432	ta->next = SvSTATE (next_sv);
1267		1433
1268	/* cannot transfer to destroyed coros, skip and look for next */	1434	/* cannot transfer to destroyed coros, skip and look for next */
1269	if (ta->next->flags & CF_DESTROYED)	1435	if (expect_false (ta->next->flags & CF_DESTROYED))
1270	{	1436	{
1271	UNLOCK;	1437	UNLOCK;
1272	SvREFCNT_dec (next_sv);	1438	SvREFCNT_dec (next_sv);
1273	/* coro_nready is already taken care of by destroy */	1439	/* coro_nready is already taken care of by destroy */
1274	continue;	1440	continue;
…		…
1319	{	1485	{
1320	dTHX;	1486	dTHX;
1321	struct transfer_args ta;	1487	struct transfer_args ta;
1322		1488
1323	prepare_schedule (aTHX_ &ta);	1489	prepare_schedule (aTHX_ &ta);
1324	TRANSFER (ta);	1490	TRANSFER (ta, 1);
1325	}	1491	}
1326		1492
1327	static int	1493	static int
1328	api_cede (void)	1494	api_cede (void)
1329	{	1495	{
1330	dTHX;	1496	dTHX;
1331	struct transfer_args ta;	1497	struct transfer_args ta;
1332		1498
1333	prepare_cede (aTHX_ &ta);	1499	prepare_cede (aTHX_ &ta);
1334		1500
1335	if (ta.prev != ta.next)	1501	if (expect_true (ta.prev != ta.next))
1336	{	1502	{
1337	TRANSFER (ta);	1503	TRANSFER (ta, 1);
1338	return 1;	1504	return 1;
1339	}	1505	}
1340	else	1506	else
1341	return 0;	1507	return 0;
1342	}	1508	}
…		…
1347	dTHX;	1513	dTHX;
1348	struct transfer_args ta;	1514	struct transfer_args ta;
1349		1515
1350	if (prepare_cede_notself (aTHX_ &ta))	1516	if (prepare_cede_notself (aTHX_ &ta))
1351	{	1517	{
1352	TRANSFER (ta);	1518	TRANSFER (ta, 1);
1353	return 1;	1519	return 1;
1354	}	1520	}
1355	else	1521	else
1356	return 0;	1522	return 0;
1357	}	1523	}
…		…
1376	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);	1542	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
1377		1543
1378	if (coro->flags & CF_RUNNING)	1544	if (coro->flags & CF_RUNNING)
1379	PL_runops = RUNOPS_DEFAULT;	1545	PL_runops = RUNOPS_DEFAULT;
1380	else	1546	else
1381	coro->runops = RUNOPS_DEFAULT;	1547	coro->slot->runops = RUNOPS_DEFAULT;
1382	}	1548	}
1383	}	1549	}
1384		1550
1385	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1551	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1386		1552
…		…
1390	{	1556	{
1391	#ifdef USE_ITHREADS	1557	#ifdef USE_ITHREADS
1392	MUTEX_INIT (&coro_mutex);	1558	MUTEX_INIT (&coro_mutex);
1393	#endif	1559	#endif
1394	BOOT_PAGESIZE;	1560	BOOT_PAGESIZE;
		1561
		1562	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1563	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1564
		1565	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1566	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1567	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1568	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1569
		1570	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1571	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1572	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395		1573
1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1574	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397		1575
1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1576	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1577	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));	1578	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));	1579	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1402		1580
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;	1581	main_mainstack = PL_mainstack;
1412	main_top_env = PL_top_env;	1582	main_top_env = PL_top_env;
1413		1583
1414	while (main_top_env->je_prev)	1584	while (main_top_env->je_prev)
1415	main_top_env = main_top_env->je_prev;	1585	main_top_env = main_top_env->je_prev;
1416		1586
1417	coroapi.ver = CORO_API_VERSION;	1587	coroapi.ver = CORO_API_VERSION;
		1588	coroapi.rev = CORO_API_REVISION;
1418	coroapi.transfer = api_transfer;	1589	coroapi.transfer = api_transfer;
1419		1590
1420	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1591	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1421	}	1592	}
1422		1593
1423	SV *	1594	SV *
1424	new (char *klass, ...)	1595	new (char *klass, ...)
1425	CODE:	1596	CODE:
1426	{	1597	{
1427	struct coro *coro;	1598	struct coro *coro;
		1599	MAGIC *mg;
1428	HV *hv;	1600	HV *hv;
1429	int i;	1601	int i;
1430		1602
1431	Newz (0, coro, 1, struct coro);	1603	Newz (0, coro, 1, struct coro);
1432	coro->args = newAV ();	1604	coro->args = newAV ();
1433	coro->save = CORO_SAVE_DEF;
1434	coro->flags = CF_NEW;	1605	coro->flags = CF_NEW;
1435		1606
1436	if (coro_first) coro_first->prev = coro;	1607	if (coro_first) coro_first->prev = coro;
1437	coro->next = coro_first;	1608	coro->next = coro_first;
1438	coro_first = coro;	1609	coro_first = coro;
1439		1610
1440	coro->hv = hv = newHV ();	1611	coro->hv = hv = newHV ();
1441	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1612	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1613	mg->mg_flags \|= MGf_DUP;
1442	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1614	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1443		1615
		1616	av_extend (coro->args, items - 1);
1444	for (i = 1; i < items; i++)	1617	for (i = 1; i < items; i++)
1445	av_push (coro->args, newSVsv (ST (i)));	1618	av_push (coro->args, newSVsv (ST (i)));
1446	}	1619	}
1447	OUTPUT:	1620	OUTPUT:
1448	RETVAL
1449
1450	int
1451	save (SV *coro, int new_save = -1)
1452	CODE:
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	1621	RETVAL
1467		1622
1468	# these not obviously related functions are all rolled into the same xs	1623	# these not obviously related functions are all rolled into the same xs
1469	# function to increase chances that they all will call transfer with the same	1624	# function to increase chances that they all will call transfer with the same
1470	# stack offset	1625	# stack offset
…		…
1477	Coro::cede_notself = 4	1632	Coro::cede_notself = 4
1478	CODE:	1633	CODE:
1479	{	1634	{
1480	struct transfer_args ta;	1635	struct transfer_args ta;
1481		1636
		1637	PUTBACK;
1482	switch (ix)	1638	switch (ix)
1483	{	1639	{
1484	case 0:	1640	case 0:
1485	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1641	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1486	ta.next = 0;	1642	ta.next = 0;
…		…
1505	if (!prepare_cede_notself (aTHX_ &ta))	1661	if (!prepare_cede_notself (aTHX_ &ta))
1506	XSRETURN_EMPTY;	1662	XSRETURN_EMPTY;
1507		1663
1508	break;	1664	break;
1509	}	1665	}
		1666	SPAGAIN;
1510		1667
1511	BARRIER;	1668	BARRIER;
		1669	PUTBACK;
1512	TRANSFER (ta);	1670	TRANSFER (ta, 0);
1513		1671	SPAGAIN; /* might be the sp of a different coroutine now */
1514	if (GIMME_V != G_VOID && ta.next != ta.prev)	1672	/* be extra careful not to ever do anything after TRANSFER */
1515	XSRETURN_YES;
1516	}	1673	}
1517		1674
1518	bool	1675	bool
1519	_destroy (SV *coro_sv)	1676	_destroy (SV *coro_sv)
1520	CODE:	1677	CODE:
…		…
1569	CODE:	1726	CODE:
1570	{	1727	{
1571	if (coro->mainstack)	1728	if (coro->mainstack)
1572	{	1729	{
1573	struct coro temp;	1730	struct coro temp;
1574	Zero (&temp, 1, struct coro);
1575	temp.save = CORO_SAVE_ALL;
1576		1731
1577	if (!(coro->flags & CF_RUNNING))	1732	if (!(coro->flags & CF_RUNNING))
1578	{	1733	{
		1734	PUTBACK;
1579	save_perl (aTHX_ &temp);	1735	save_perl (aTHX_ &temp);
1580	load_perl (aTHX_ coro);	1736	load_perl (aTHX_ coro);
1581	}	1737	}
1582		1738
1583	{	1739	{
1584	dSP;	1740	dSP;
1585	ENTER;	1741	ENTER;
1586	SAVETMPS;	1742	SAVETMPS;
		1743	PUTBACK;
		1744	PUSHSTACK;
1587	PUSHMARK (SP);	1745	PUSHMARK (SP);
1588	PUTBACK;	1746
1589	if (ix)	1747	if (ix)
1590	eval_sv (coderef, 0);	1748	eval_sv (coderef, 0);
1591	else	1749	else
1592	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	1750	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1751
		1752	POPSTACK;
1593	SPAGAIN;	1753	SPAGAIN;
1594	FREETMPS;	1754	FREETMPS;
1595	LEAVE;	1755	LEAVE;
1596	PUTBACK;	1756	PUTBACK;
1597	}	1757	}
1598		1758
1599	if (!(coro->flags & CF_RUNNING))	1759	if (!(coro->flags & CF_RUNNING))
1600	{	1760	{
1601	save_perl (aTHX_ coro);	1761	save_perl (aTHX_ coro);
1602	load_perl (aTHX_ &temp);	1762	load_perl (aTHX_ &temp);
		1763	SPAGAIN;
1603	}	1764	}
1604	}	1765	}
1605	}	1766	}
1606		1767
1607	SV *	1768	SV *
…		…
1648	case 1: RETVAL = coro->usecount; break;	1809	case 1: RETVAL = coro->usecount; break;
1649	}	1810	}
1650	OUTPUT:	1811	OUTPUT:
1651	RETVAL	1812	RETVAL
1652		1813
		1814	void
		1815	force_cctx ()
		1816	CODE:
		1817	struct coro *coro = SvSTATE (coro_current);
		1818	coro->cctx->idle_sp = 0;
1653		1819
1654	MODULE = Coro::State PACKAGE = Coro	1820	MODULE = Coro::State PACKAGE = Coro
1655		1821
1656	BOOT:	1822	BOOT:
1657	{	1823	{
1658	int i;	1824	int i;
1659		1825
1660	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);	1826	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1661	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);	1827	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1662	av_async_pool = get_av ("Coro::async_pool", TRUE);	1828	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1663		1829
1664	coro_current = get_sv ("Coro::current", FALSE);	1830	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1665	SvREADONLY_on (coro_current);	1831	SvREADONLY_on (coro_current);
1666		1832
1667	coro_stash = gv_stashpv ("Coro", TRUE);	1833	coro_stash = gv_stashpv ("Coro", TRUE);
1668		1834
1669	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1835	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1670	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1836	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1671	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1837	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1672	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1838	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1675		1841
1676	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1842	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1677	coro_ready[i] = newAV ();	1843	coro_ready[i] = newAV ();
1678		1844
1679	{	1845	{
1680	SV *sv = perl_get_sv("Coro::API", 1);	1846	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1847	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1681		1848
1682	coroapi.schedule = api_schedule;	1849	coroapi.schedule = api_schedule;
1683	coroapi.save = api_save;
1684	coroapi.cede = api_cede;	1850	coroapi.cede = api_cede;
1685	coroapi.cede_notself = api_cede_notself;	1851	coroapi.cede_notself = api_cede_notself;
1686	coroapi.ready = api_ready;	1852	coroapi.ready = api_ready;
1687	coroapi.is_ready = api_is_ready;	1853	coroapi.is_ready = api_is_ready;
1688	coroapi.nready = &coro_nready;	1854	coroapi.nready = &coro_nready;
…		…
1737	CODE:	1903	CODE:
1738	RETVAL = coro_nready;	1904	RETVAL = coro_nready;
1739	OUTPUT:	1905	OUTPUT:
1740	RETVAL	1906	RETVAL
1741		1907
		1908	void
		1909	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1910	PROTOTYPE: $;$
		1911	CODE:
		1912	SvREFCNT_dec (self->throw);
		1913	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1914
		1915	void
		1916	swap_defsv (Coro::State self)
		1917	PROTOTYPE: $
		1918	ALIAS:
		1919	swap_defav = 1
		1920	CODE:
		1921	if (!self->slot)
		1922	croak ("cannot swap state with coroutine that has no saved state");
		1923	else
		1924	{
		1925	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1926	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1927
		1928	SV tmp = src; src = dst; *dst = tmp;
		1929	}
		1930
1742	# for async_pool speedup	1931	# for async_pool speedup
1743	void	1932	void
1744	_pool_1 (SV *cb)	1933	_pool_1 (SV *cb)
1745	CODE:	1934	CODE:
1746	{	1935	{
1747	int i, len;	1936	struct coro *coro = SvSTATE (coro_current);
1748	HV hv = (HV )SvRV (coro_current);	1937	HV hv = (HV )SvRV (coro_current);
1749	AV *defav = GvAV (PL_defgv);	1938	AV *defav = GvAV (PL_defgv);
1750	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	1939	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1751	AV *invoke_av;	1940	AV *invoke_av;
		1941	int i, len;
1752		1942
1753	if (!invoke)	1943	if (!invoke)
		1944	{
		1945	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1754	croak ("\3terminate\2\n");	1946	croak ("\3async_pool terminate\2\n");
		1947	}
		1948
		1949	SvREFCNT_dec (coro->saved_deffh);
		1950	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1755		1951
1756	hv_store (hv, "desc", sizeof ("desc") - 1,	1952	hv_store (hv, "desc", sizeof ("desc") - 1,
1757	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	1953	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1758		1954
1759	invoke_av = (AV *)SvRV (invoke);	1955	invoke_av = (AV *)SvRV (invoke);
…		…
1777	{	1973	{
1778	struct coro *coro = SvSTATE (coro_current);	1974	struct coro *coro = SvSTATE (coro_current);
1779		1975
1780	sv_setsv (cb, &PL_sv_undef);	1976	sv_setsv (cb, &PL_sv_undef);
1781		1977
		1978	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1979	coro->saved_deffh = 0;
		1980
1782	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	1981	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1783	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	1982	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1983	{
		1984	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1784	croak ("\3terminate\2\n");	1985	croak ("\3async_pool terminate\2\n");
		1986	}
1785		1987
1786	av_clear (GvAV (PL_defgv));	1988	av_clear (GvAV (PL_defgv));
1787	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	1989	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1788	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	1990	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1789		1991
1790	coro->save = CORO_SAVE_DEF;
1791	coro->prio = 0;	1992	coro->prio = 0;
1792		1993
1793	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	1994	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1794	api_trace (coro_current, 0);	1995	api_trace (coro_current, 0);
1795		1996

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC vs. Revision 1.227 by root, Sat Apr 5 22:29:54 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC vs.
Revision 1.227 by root, Sat Apr 5 22:29:54 2008 UTC