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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.183 by root, Wed Oct 3 19:19:06 2007 UTC vs.
Revision 1.252 by root, Tue Nov 4 12:08:44 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	/* 5.11 */
		87	#ifndef CxHASARGS
		88	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		89	#endif
		90
		91	/* 5.10.0 */
		92	#ifndef SvREFCNT_inc_NN
		93	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		94	#endif
		95
		96	/* 5.8.8 */
		97	#ifndef GV_NOTQUAL
		98	# define GV_NOTQUAL 0
		99	#endif
		100	#ifndef newSV
		101	# define newSV(l) NEWSV(0,l)
		102	#endif
		103
75	/* 5.8.7 */	104	/* 5.8.7 */
76	#ifndef SvRV_set	105	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	107	#endif
79		108
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		128
100	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		132	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	133	#else
104	# define attribute(x)	134	# define attribute(x)
105	# define BARRIER	135	# define BARRIER
		136	# define expect(expr,value) (expr)
106	#endif	137	#endif
		138
		139	#define expect_false(expr) expect ((expr) != 0, 0)
		140	#define expect_true(expr) expect ((expr) != 0, 1)
107		141
108	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
109		143
110	#include "CoroAPI.h"	144	#include "CoroAPI.h"
111		145
…		…
119	#endif	153	#endif
120		154
121	/* helper storage struct for Coro::AIO */	155	/* helper storage struct for Coro::AIO */
122	struct io_state	156	struct io_state
123	{	157	{
		158	AV *res;
124	int errorno;	159	int errorno;
125	I32 laststype;	160	I32 laststype;
126	int laststatval;	161	int laststatval;
127	Stat_t statcache;	162	Stat_t statcache;
128	};	163	};
129		164
		165	static double (nvtime)(); / so why doesn't it take void? */
		166
130	static size_t coro_stacksize = CORO_STACKSIZE;	167	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	168	static struct CoroAPI coroapi;
132	static AV main_mainstack; / used to differentiate between $main and others */	169	static AV main_mainstack; / used to differentiate between $main and others */
133	static JMPENV *main_top_env;	170	static JMPENV *main_top_env;
134	static HV coro_state_stash, coro_stash;	171	static HV coro_state_stash, coro_stash;
135	static SV coro_mortal; / will be freed after next transfer */	172	static volatile SV coro_mortal; / will be freed/thrown after next transfer */
136		173
137	static GV irsgv; / $/ */	174	static GV irsgv; / $/ */
		175	static GV stdoutgv; / STDOUT /
		176	static SV *rv_diehook;
		177	static SV *rv_warnhook;
		178	static HV hv_sig; / %SIG */
138		179
139	/* async_pool helper stuff */	180	/* async_pool helper stuff */
140	static SV *sv_pool_rss;	181	static SV *sv_pool_rss;
141	static SV *sv_pool_size;	182	static SV *sv_pool_size;
142	static AV *av_async_pool;	183	static AV *av_async_pool;
		184
		185	/* Coro::AnyEvent */
		186	static SV *sv_activity;
143		187
144	static struct coro_cctx *cctx_first;	188	static struct coro_cctx *cctx_first;
145	static int cctx_count, cctx_idle;	189	static int cctx_count, cctx_idle;
146		190
147	enum {	191	enum {
…		…
178	CF_READY = 0x0002, /* coroutine is ready */	222	CF_READY = 0x0002, /* coroutine is ready */
179	CF_NEW = 0x0004, /* has never been switched to */	223	CF_NEW = 0x0004, /* has never been switched to */
180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	224	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181	};	225	};
182		226
		227	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		228	typedef struct {
		229	SV *defsv;
		230	AV *defav;
		231	SV *errsv;
		232	SV *irsgv;
		233	#define VAR(name,type) type name;
		234	# include "state.h"
		235	#undef VAR
		236	} perl_slots;
		237
		238	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		239
183	/* this is a structure representing a perl-level coroutine */	240	/* this is a structure representing a perl-level coroutine */
184	struct coro {	241	struct coro {
185	/* the c coroutine allocated to this perl coroutine, if any */	242	/* the c coroutine allocated to this perl coroutine, if any */
186	coro_cctx *cctx;	243	coro_cctx *cctx;
187		244
		245	/* process data */
		246	AV *mainstack;
		247	perl_slots slot; / basically the saved sp */
		248
188	/* data associated with this coroutine (initial args) */	249	AV args; / data associated with this coroutine (initial args) */
189	AV *args;	250	int refcnt; /* coroutines are refcounted, yes */
190	int refcnt;
191	int flags; /* CF_ flags */	251	int flags; /* CF_ flags */
192		252	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	GV 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		253
205	/* statistics */	254	/* statistics */
206	int usecount; /* number of transfers to this coro */	255	int usecount; /* number of transfers to this coro */
207		256
208	/* coro process data */	257	/* coro process data */
209	int prio;	258	int prio;
210	//SV *throw;	259	SV throw; / exception to be thrown */
211		260
212	/* async_pool */	261	/* async_pool */
213	GV *asp_deffh;	262	SV *saved_deffh;
214		263
215	/* linked list */	264	/* linked list */
216	struct coro next, prev;	265	struct coro next, prev;
217	HV hv; / the perl hash associated with this coro, if any */
218	};	266	};
219		267
220	typedef struct coro *Coro__State;	268	typedef struct coro *Coro__State;
221	typedef struct coro *Coro__State_or_hashref;	269	typedef struct coro *Coro__State_or_hashref;
222		270
…		…
229	#define PRIO_IDLE -3	277	#define PRIO_IDLE -3
230	#define PRIO_MIN -4	278	#define PRIO_MIN -4
231		279
232	/* for Coro.pm */	280	/* for Coro.pm */
233	static SV *coro_current;	281	static SV *coro_current;
		282	static SV *coro_readyhook;
234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	283	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
235	static int coro_nready;	284	static int coro_nready;
236	static struct coro *coro_first;	285	static struct coro *coro_first;
237		286
238	/ lowlevel stuff ********************************************************/	287	/ lowlevel stuff ********************************************************/
239		288
		289	static SV *
		290	coro_get_sv (pTHX_ const char *name, int create)
		291	{
		292	#if PERL_VERSION_ATLEAST (5,10,0)
		293	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		294	get_sv (name, create);
		295	#endif
		296	return get_sv (name, create);
		297	}
		298
		299	static AV *
		300	coro_get_av (pTHX_ const char *name, int create)
		301	{
		302	#if PERL_VERSION_ATLEAST (5,10,0)
		303	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		304	get_av (name, create);
		305	#endif
		306	return get_av (name, create);
		307	}
		308
		309	static HV *
		310	coro_get_hv (pTHX_ const char *name, int create)
		311	{
		312	#if PERL_VERSION_ATLEAST (5,10,0)
		313	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		314	get_hv (name, create);
		315	#endif
		316	return get_hv (name, create);
		317	}
		318
240	static AV *	319	static AV *
241	coro_clone_padlist (pTHX_ CV *cv)	320	coro_clone_padlist (pTHX_ CV *cv)
242	{	321	{
243	AV *padlist = CvPADLIST (cv);	322	AV *padlist = CvPADLIST (cv);
244	AV newpadlist, newpad;	323	AV newpadlist, newpad;
245		324
246	newpadlist = newAV ();	325	newpadlist = newAV ();
247	AvREAL_off (newpadlist);	326	AvREAL_off (newpadlist);
248	#if PERL_VERSION_ATLEAST (5,9,0)	327	#if PERL_VERSION_ATLEAST (5,10,0)
249	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	328	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
250	#else	329	#else
251	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	330	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
252	#endif	331	#endif
253	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	332	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
254	--AvFILLp (padlist);	333	--AvFILLp (padlist);
255		334
256	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	335	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
257	av_store (newpadlist, 1, (SV *)newpad);	336	av_store (newpadlist, 1, (SV *)newpad);
258		337
259	return newpadlist;	338	return newpadlist;
260	}	339	}
261		340
…		…
291		370
292	/* casting is fun. */	371	/* casting is fun. */
293	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	372	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
294	free_padlist (aTHX_ padlist);	373	free_padlist (aTHX_ padlist);
295		374
296	SvREFCNT_dec (av);	375	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
297		376
298	return 0;	377	return 0;
299	}	378	}
300		379
301	#define PERL_MAGIC_coro PERL_MAGIC_ext	380	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		381	#define CORO_MAGIC_type_state PERL_MAGIC_ext
302		382
303	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	383	static MGVTBL coro_cv_vtbl = {
		384	0, 0, 0, 0,
		385	coro_cv_free
		386	};
304		387
305	#define CORO_MAGIC(cv) \	388	#define CORO_MAGIC(sv,type) \
306	SvMAGIC (cv) \	389	SvMAGIC (sv) \
307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	390	? SvMAGIC (sv)->mg_type == type \
308	? SvMAGIC (cv) \	391	? SvMAGIC (sv) \
309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	392	: mg_find (sv, type) \
310	: 0	393	: 0
		394
		395	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		396	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
311		397
312	static struct coro *	398	static struct coro *
313	SvSTATE_ (pTHX_ SV *coro)	399	SvSTATE_ (pTHX_ SV *coro)
314	{	400	{
315	HV *stash;	401	HV *stash;
316	MAGIC *mg;	402	MAGIC *mg;
317		403
318	if (SvROK (coro))	404	if (SvROK (coro))
319	coro = SvRV (coro);	405	coro = SvRV (coro);
320		406
321	if (SvTYPE (coro) != SVt_PVHV)	407	if (expect_false (SvTYPE (coro) != SVt_PVHV))
322	croak ("Coro::State object required");	408	croak ("Coro::State object required");
323		409
324	stash = SvSTASH (coro);	410	stash = SvSTASH (coro);
325	if (stash != coro_stash && stash != coro_state_stash)	411	if (expect_false (stash != coro_stash && stash != coro_state_stash))
326	{	412	{
327	/* very slow, but rare, check */	413	/* very slow, but rare, check */
328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	414	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329	croak ("Coro::State object required");	415	croak ("Coro::State object required");
330	}	416	}
331		417
332	mg = CORO_MAGIC (coro);	418	mg = CORO_MAGIC_state (coro);
333	return (struct coro *)mg->mg_ptr;	419	return (struct coro *)mg->mg_ptr;
334	}	420	}
335		421
336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	422	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
337		423
338	/* the next two functions merely cache the padlists */	424	/* the next two functions merely cache the padlists */
339	static void	425	static void
340	get_padlist (pTHX_ CV *cv)	426	get_padlist (pTHX_ CV *cv)
341	{	427	{
342	MAGIC *mg = CORO_MAGIC (cv);	428	MAGIC *mg = CORO_MAGIC_cv (cv);
343	AV *av;	429	AV *av;
344		430
345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	431	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	432	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
347	else	433	else
348	{	434	{
349	#if CORO_PREFER_PERL_FUNCTIONS	435	#if CORO_PREFER_PERL_FUNCTIONS
350	/* this is probably cleaner, but also slower? */	436	/* this is probably cleaner? but also slower! */
		437	/* in practise, it seems to be less stable */
351	CV *cp = Perl_cv_clone (cv);	438	CV *cp = Perl_cv_clone (cv);
352	CvPADLIST (cv) = CvPADLIST (cp);	439	CvPADLIST (cv) = CvPADLIST (cp);
353	CvPADLIST (cp) = 0;	440	CvPADLIST (cp) = 0;
354	SvREFCNT_dec (cp);	441	SvREFCNT_dec (cp);
355	#else	442	#else
…		…
359	}	446	}
360		447
361	static void	448	static void
362	put_padlist (pTHX_ CV *cv)	449	put_padlist (pTHX_ CV *cv)
363	{	450	{
364	MAGIC *mg = CORO_MAGIC (cv);	451	MAGIC *mg = CORO_MAGIC_cv (cv);
365	AV *av;	452	AV *av;
366		453
367	if (!mg)	454	if (expect_false (!mg))
368	{	455	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		456
375	av = (AV *)mg->mg_obj;	457	av = (AV *)mg->mg_obj;
376		458
377	if (AvFILLp (av) >= AvMAX (av))	459	if (expect_false (AvFILLp (av) >= AvMAX (av)))
378	av_extend (av, AvMAX (av) + 1);	460	av_extend (av, AvMAX (av) + 1);
379		461
380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	462	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
381	}	463	}
382		464
383	/ load & save, init *****************************************************/	465	/ load & save, init *****************************************************/
384		466
385	static void	467	static void
386	load_perl (pTHX_ Coro__State c)	468	load_perl (pTHX_ Coro__State c)
387	{	469	{
		470	perl_slots *slot = c->slot;
		471	c->slot = 0;
		472
		473	PL_mainstack = c->mainstack;
		474
		475	GvSV (PL_defgv) = slot->defsv;
		476	GvAV (PL_defgv) = slot->defav;
		477	GvSV (PL_errgv) = slot->errsv;
		478	GvSV (irsgv) = slot->irsgv;
		479
388	#define VAR(name,type) PL_ ## name = c->name;	480	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	481	# include "state.h"
390	#undef VAR	482	#undef VAR
391
392	GvSV (PL_defgv) = c->defsv;
393	GvAV (PL_defgv) = c->defav;
394	GvSV (PL_errgv) = c->errsv;
395	PL_defoutgv = c->deffh;
396	PL_rs = c->irssv;
397	GvSV (irsgv) = c->irssv_sv;
398		483
399	{	484	{
400	dSP;	485	dSP;
		486
401	CV *cv;	487	CV *cv;
402		488
403	/* now do the ugly restore mess */	489	/* now do the ugly restore mess */
404	while ((cv = (CV *)POPs))	490	while (expect_true (cv = (CV *)POPs))
405	{	491	{
406	put_padlist (aTHX_ cv); /* mark this padlist as available */	492	put_padlist (aTHX_ cv); /* mark this padlist as available */
407	CvDEPTH (cv) = PTR2IV (POPs);	493	CvDEPTH (cv) = PTR2IV (POPs);
408	CvPADLIST (cv) = (AV *)POPs;	494	CvPADLIST (cv) = (AV *)POPs;
409	}	495	}
…		…
428		514
429	XPUSHs (Nullsv);	515	XPUSHs (Nullsv);
430	/* this loop was inspired by pp_caller */	516	/* this loop was inspired by pp_caller */
431	for (;;)	517	for (;;)
432	{	518	{
433	while (cxix >= 0)	519	while (expect_true (cxix >= 0))
434	{	520	{
435	PERL_CONTEXT *cx = &ccstk[cxix--];	521	PERL_CONTEXT *cx = &ccstk[cxix--];
436		522
437	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)	523	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
438	{	524	{
439	CV *cv = cx->blk_sub.cv;	525	CV *cv = cx->blk_sub.cv;
440		526
441	if (CvDEPTH (cv))	527	if (expect_true (CvDEPTH (cv)))
442	{	528	{
443	EXTEND (SP, 3);	529	EXTEND (SP, 3);
444	PUSHs ((SV *)CvPADLIST (cv));	530	PUSHs ((SV *)CvPADLIST (cv));
445	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	531	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
446	PUSHs ((SV *)cv);	532	PUSHs ((SV *)cv);
447		533
448	CvDEPTH (cv) = 0;	534	CvDEPTH (cv) = 0;
449	get_padlist (aTHX_ cv);	535	get_padlist (aTHX_ cv);
450	}	536	}
451	}	537	}
452	}	538	}
453		539
454	if (top_si->si_type == PERLSI_MAIN)	540	if (expect_true (top_si->si_type == PERLSI_MAIN))
455	break;	541	break;
456		542
457	top_si = top_si->si_prev;	543	top_si = top_si->si_prev;
458	ccstk = top_si->si_cxstack;	544	ccstk = top_si->si_cxstack;
459	cxix = top_si->si_cxix;	545	cxix = top_si->si_cxix;
460	}	546	}
461		547
462	PUTBACK;	548	PUTBACK;
463	}	549	}
464		550
		551	/* allocate some space on the context stack for our purposes */
		552	/* we manually unroll here, as usually 2 slots is enough */
		553	if (SLOT_COUNT >= 1) CXINC;
		554	if (SLOT_COUNT >= 2) CXINC;
		555	if (SLOT_COUNT >= 3) CXINC;
		556	{
		557	int i;
		558	for (i = 3; i < SLOT_COUNT; ++i)
		559	CXINC;
		560	}
		561	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		562
		563	c->mainstack = PL_mainstack;
		564
		565	{
		566	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		567
465	c->defav = GvAV (PL_defgv);	568	slot->defav = GvAV (PL_defgv);
466	c->defsv = DEFSV;	569	slot->defsv = DEFSV;
467	c->errsv = ERRSV;	570	slot->errsv = ERRSV;
468	c->deffh = PL_defoutgv;
469	c->irssv = PL_rs;
470	c->irssv_sv = GvSV (irsgv);	571	slot->irsgv = GvSV (irsgv);
471		572
472	#define VAR(name,type)c->name = PL_ ## name;	573	#define VAR(name,type) slot->name = PL_ ## name;
473	# include "state.h"	574	# include "state.h"
474	#undef VAR	575	#undef VAR
		576	}
475	}	577	}
476		578
477	/*	579	/*
478	* allocate various perl stacks. This is an exact copy	580	* allocate various perl stacks. This is an exact copy
479	* of perl.c:init_stacks, except that it uses less memory	581	* of perl.c:init_stacks, except that it uses less memory
…		…
484	# define coro_init_stacks init_stacks	586	# define coro_init_stacks init_stacks
485	#else	587	#else
486	static void	588	static void
487	coro_init_stacks (pTHX)	589	coro_init_stacks (pTHX)
488	{	590	{
489	PL_curstackinfo = new_stackinfo(64, 6);	591	PL_curstackinfo = new_stackinfo(32, 8);
490	PL_curstackinfo->si_type = PERLSI_MAIN;	592	PL_curstackinfo->si_type = PERLSI_MAIN;
491	PL_curstack = PL_curstackinfo->si_stack;	593	PL_curstack = PL_curstackinfo->si_stack;
492	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	594	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
493		595
494	PL_stack_base = AvARRAY(PL_curstack);	596	PL_stack_base = AvARRAY(PL_curstack);
495	PL_stack_sp = PL_stack_base;	597	PL_stack_sp = PL_stack_base;
496	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	598	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
497		599
498	New(50,PL_tmps_stack,64,SV*);	600	New(50,PL_tmps_stack,32,SV*);
499	PL_tmps_floor = -1;	601	PL_tmps_floor = -1;
500	PL_tmps_ix = -1;	602	PL_tmps_ix = -1;
501	PL_tmps_max = 64;	603	PL_tmps_max = 32;
502		604
503	New(54,PL_markstack,16,I32);	605	New(54,PL_markstack,16,I32);
504	PL_markstack_ptr = PL_markstack;	606	PL_markstack_ptr = PL_markstack;
505	PL_markstack_max = PL_markstack + 16;	607	PL_markstack_max = PL_markstack + 16;
506		608
507	#ifdef SET_MARK_OFFSET	609	#ifdef SET_MARK_OFFSET
508	SET_MARK_OFFSET;	610	SET_MARK_OFFSET;
509	#endif	611	#endif
510		612
511	New(54,PL_scopestack,16,I32);	613	New(54,PL_scopestack,8,I32);
512	PL_scopestack_ix = 0;	614	PL_scopestack_ix = 0;
513	PL_scopestack_max = 16;	615	PL_scopestack_max = 8;
514		616
515	New(54,PL_savestack,64,ANY);	617	New(54,PL_savestack,24,ANY);
516	PL_savestack_ix = 0;	618	PL_savestack_ix = 0;
517	PL_savestack_max = 64;	619	PL_savestack_max = 24;
518		620
519	#if !PERL_VERSION_ATLEAST (5,9,0)	621	#if !PERL_VERSION_ATLEAST (5,10,0)
520	New(54,PL_retstack,4,OP*);	622	New(54,PL_retstack,4,OP*);
521	PL_retstack_ix = 0;	623	PL_retstack_ix = 0;
522	PL_retstack_max = 4;	624	PL_retstack_max = 4;
523	#endif	625	#endif
524	}	626	}
…		…
547		649
548	Safefree (PL_tmps_stack);	650	Safefree (PL_tmps_stack);
549	Safefree (PL_markstack);	651	Safefree (PL_markstack);
550	Safefree (PL_scopestack);	652	Safefree (PL_scopestack);
551	Safefree (PL_savestack);	653	Safefree (PL_savestack);
552	#if !PERL_VERSION_ATLEAST (5,9,0)	654	#if !PERL_VERSION_ATLEAST (5,10,0)
553	Safefree (PL_retstack);	655	Safefree (PL_retstack);
554	#endif	656	#endif
555	}	657	}
556		658
557	static size_t	659	static size_t
…		…
559	{	661	{
560	size_t rss = sizeof (*coro);	662	size_t rss = sizeof (*coro);
561		663
562	if (coro->mainstack)	664	if (coro->mainstack)
563	{	665	{
		666	perl_slots tmp_slot;
		667	perl_slots *slot;
		668
564	if (coro->flags & CF_RUNNING)	669	if (coro->flags & CF_RUNNING)
565	{	670	{
		671	slot = &tmp_slot;
		672
566	#define VAR(name,type)coro->name = PL_ ## name;	673	#define VAR(name,type) slot->name = PL_ ## name;
567	# include "state.h"	674	# include "state.h"
568	#undef VAR	675	#undef VAR
569	}	676	}
		677	else
		678	slot = coro->slot;
570		679
		680	if (slot)
		681	{
571	rss += sizeof (coro->curstackinfo);	682	rss += sizeof (slot->curstackinfo);
572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	683	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	684	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
575	rss += coro->tmps_max * sizeof (SV *);	685	rss += slot->tmps_max * sizeof (SV *);
576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	686	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
577	rss += coro->scopestack_max * sizeof (I32);	687	rss += slot->scopestack_max * sizeof (I32);
578	rss += coro->savestack_max * sizeof (ANY);	688	rss += slot->savestack_max * sizeof (ANY);
579		689
580	#if !PERL_VERSION_ATLEAST (5,9,0)	690	#if !PERL_VERSION_ATLEAST (5,10,0)
581	rss += coro->retstack_max * sizeof (OP *);	691	rss += slot->retstack_max * sizeof (OP *);
582	#endif	692	#endif
		693	}
583	}	694	}
584		695
585	return rss;	696	return rss;
586	}	697	}
587		698
588	/ coroutine stack handling **********************************************/	699	/ coroutine stack handling **********************************************/
		700
		701	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		702	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		703	static int (orig_sigelem_clr) (pTHX_ SV sv, MAGIC *mg);
		704
		705	/* apparently < 5.8.8 */
		706	#ifndef MgPV_nolen_const
		707	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		708	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		709	(const char*)(mg)->mg_ptr)
		710	#endif
		711
		712	/*
		713	* This overrides the default magic get method of %SIG elements.
		714	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		715	* and instead of tryign to save and restore the hash elements, we just provide
		716	* readback here.
		717	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		718	* not expecting this to actually change the hook. This is a potential problem
		719	* when a schedule happens then, but we ignore this.
		720	*/
		721	static int
		722	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		723	{
		724	const char *s = MgPV_nolen_const (mg);
		725
		726	if (*s == '_')
		727	{
		728	SV **svp = 0;
		729
		730	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		731	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		732
		733	if (svp)
		734	{
		735	sv_setsv (sv, svp ? svp : &PL_sv_undef);
		736	return 0;
		737	}
		738	}
		739
		740	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		741	}
		742
		743	static int
		744	coro_sigelem_clr (pTHX_ SV sv, MAGIC mg)
		745	{
		746	const char *s = MgPV_nolen_const (mg);
		747
		748	if (*s == '_')
		749	{
		750	SV **svp = 0;
		751
		752	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		753	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		754
		755	if (svp)
		756	{
		757	SV old = svp;
		758	*svp = 0;
		759	SvREFCNT_dec (old);
		760	return 0;
		761	}
		762	}
		763
		764	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		765	}
		766
		767	static int
		768	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		769	{
		770	const char *s = MgPV_nolen_const (mg);
		771
		772	if (*s == '_')
		773	{
		774	SV **svp = 0;
		775
		776	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		777	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		778
		779	if (svp)
		780	{
		781	SV old = svp;
		782	*svp = newSVsv (sv);
		783	SvREFCNT_dec (old);
		784	return 0;
		785	}
		786	}
		787
		788	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		789	}
589		790
590	static void	791	static void
591	coro_setup (pTHX_ struct coro *coro)	792	coro_setup (pTHX_ struct coro *coro)
592	{	793	{
593	/*	794	/*
…		…
598	PL_runops = RUNOPS_DEFAULT;	799	PL_runops = RUNOPS_DEFAULT;
599	PL_curcop = &PL_compiling;	800	PL_curcop = &PL_compiling;
600	PL_in_eval = EVAL_NULL;	801	PL_in_eval = EVAL_NULL;
601	PL_comppad = 0;	802	PL_comppad = 0;
602	PL_curpm = 0;	803	PL_curpm = 0;
		804	PL_curpad = 0;
603	PL_localizing = 0;	805	PL_localizing = 0;
604	PL_dirty = 0;	806	PL_dirty = 0;
605	PL_restartop = 0;	807	PL_restartop = 0;
		808	#if PERL_VERSION_ATLEAST (5,10,0)
		809	PL_parser = 0;
		810	#endif
		811
		812	/* recreate the die/warn hooks */
		813	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		814	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
606		815
607	GvSV (PL_defgv) = NEWSV (0, 0);	816	GvSV (PL_defgv) = newSV (0);
608	GvAV (PL_defgv) = coro->args; coro->args = 0;	817	GvAV (PL_defgv) = coro->args; coro->args = 0;
609	GvSV (PL_errgv) = NEWSV (0, 0);	818	GvSV (PL_errgv) = newSV (0);
610	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	819	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
611	PL_rs = newSVsv (GvSV (irsgv));	820	PL_rs = newSVsv (GvSV (irsgv));
612		821	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
613	{
614	IO *io = newIO ();
615	PL_defoutgv = newGVgen ("Coro");
616	GvIOp(PL_defoutgv) = io;
617	IoTYPE (io) = IoTYPE_WRONLY;
618	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
619	IoFLAGS (io) \|= IOf_FLUSH;
620	}
621		822
622	{	823	{
623	dSP;	824	dSP;
624	LOGOP myop;	825	LOGOP myop;
625		826
626	Zero (&myop, 1, LOGOP);	827	Zero (&myop, 1, LOGOP);
627	myop.op_next = Nullop;	828	myop.op_next = Nullop;
628	myop.op_flags = OPf_WANT_VOID;	829	myop.op_flags = OPf_WANT_VOID;
629		830
630	PUSHMARK (SP);	831	PUSHMARK (SP);
631	XPUSHs (av_shift (GvAV (PL_defgv)));	832	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
632	PUTBACK;	833	PUTBACK;
633	PL_op = (OP *)&myop;	834	PL_op = (OP *)&myop;
634	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	835	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
635	SPAGAIN;	836	SPAGAIN;
636	}	837	}
637		838
638	ENTER; /* necessary e.g. for dounwind */	839	/* this newly created coroutine might be run on an existing cctx which most
		840	* likely was suspended in set_stacklevel, called from entersub.
		841	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		842	* so we ENTER here for symmetry
		843	*/
		844	ENTER;
639	}	845	}
640		846
641	static void	847	static void
642	coro_destroy (pTHX_ struct coro *coro)	848	coro_destroy (pTHX_ struct coro *coro)
643	{	849	{
…		…
663	SvREFCNT_dec (GvSV (PL_errgv));	869	SvREFCNT_dec (GvSV (PL_errgv));
664	SvREFCNT_dec (PL_defoutgv);	870	SvREFCNT_dec (PL_defoutgv);
665	SvREFCNT_dec (PL_rs);	871	SvREFCNT_dec (PL_rs);
666	SvREFCNT_dec (GvSV (irsgv));	872	SvREFCNT_dec (GvSV (irsgv));
667		873
		874	SvREFCNT_dec (PL_diehook);
		875	SvREFCNT_dec (PL_warnhook);
		876
668	SvREFCNT_dec (coro->asp_deffh);	877	SvREFCNT_dec (coro->saved_deffh);
669	//SvREFCNT_dec (coro->throw);	878	SvREFCNT_dec (coro->throw);
670		879
671	coro_destroy_stacks (aTHX);	880	coro_destroy_stacks (aTHX);
672	}	881	}
673		882
674	static void	883	static void
675	free_coro_mortal (pTHX)	884	free_coro_mortal (pTHX)
676	{	885	{
677	if (coro_mortal)	886	if (expect_true (coro_mortal))
678	{	887	{
679	SvREFCNT_dec (coro_mortal);	888	SvREFCNT_dec (coro_mortal);
680	coro_mortal = 0;	889	coro_mortal = 0;
681	}	890	}
682	}	891	}
…		…
711	bot = PL_stack_base + cx->blk_oldsp + 1;	920	bot = PL_stack_base + cx->blk_oldsp + 1;
712	top = cx->blk_gimme == G_ARRAY ? SP + 1	921	top = cx->blk_gimme == G_ARRAY ? SP + 1
713	: cx->blk_gimme == G_SCALAR ? bot + 1	922	: cx->blk_gimme == G_SCALAR ? bot + 1
714	: bot;	923	: bot;
715		924
		925	av_extend (av, top - bot);
716	while (bot < top)	926	while (bot < top)
717	av_push (av, SvREFCNT_inc (*bot++));	927	av_push (av, SvREFCNT_inc_NN (*bot++));
718		928
719	PL_runops = RUNOPS_DEFAULT;	929	PL_runops = RUNOPS_DEFAULT;
720	ENTER;	930	ENTER;
721	SAVETMPS;	931	SAVETMPS;
722	EXTEND (SP, 3);	932	EXTEND (SP, 3);
…		…
760	SAVETMPS;	970	SAVETMPS;
761	EXTEND (SP, 3);	971	EXTEND (SP, 3);
762	PUSHMARK (SP);	972	PUSHMARK (SP);
763	PUSHs (&PL_sv_yes);	973	PUSHs (&PL_sv_yes);
764	PUSHs (fullname);	974	PUSHs (fullname);
765	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	975	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
766	PUTBACK;	976	PUTBACK;
767	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	977	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
768	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	978	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
769	SPAGAIN;	979	SPAGAIN;
770	FREETMPS;	980	FREETMPS;
…		…
806		1016
807	/* inject a fake call to Coro::State::_cctx_init into the execution */	1017	/* inject a fake call to Coro::State::_cctx_init into the execution */
808	/* _cctx_init should be careful, as it could be called at almost any time */	1018	/* _cctx_init should be careful, as it could be called at almost any time */
809	/* during execution of a perl program */	1019	/* during execution of a perl program */
810	static void NOINLINE	1020	static void NOINLINE
811	prepare_cctx (pTHX_ coro_cctx *cctx)	1021	cctx_prepare (pTHX_ coro_cctx *cctx)
812	{	1022	{
813	dSP;	1023	dSP;
814	LOGOP myop;	1024	LOGOP myop;
815		1025
816	PL_top_env = &PL_start_env;	1026	PL_top_env = &PL_start_env;
…		…
834		1044
835	/*	1045	/*
836	* this is a _very_ stripped down perl interpreter ;)	1046	* this is a _very_ stripped down perl interpreter ;)
837	*/	1047	*/
838	static void	1048	static void
839	coro_run (void *arg)	1049	cctx_run (void *arg)
840	{	1050	{
841	dTHX;	1051	dTHX;
842		1052
843	/* coro_run is the alternative tail of transfer(), so unlock here. */	1053	/* cctx_run is the alternative tail of transfer(), so unlock here. */
844	UNLOCK;	1054	UNLOCK;
845		1055
846	/* we now skip the entersub that lead to transfer() */	1056	/* we now skip the entersub that lead to transfer() */
847	PL_op = PL_op->op_next;	1057	PL_op = PL_op->op_next;
848		1058
849	/* inject a fake subroutine call to cctx_init */	1059	/* inject a fake subroutine call to cctx_init */
850	prepare_cctx (aTHX_ (coro_cctx *)arg);	1060	cctx_prepare (aTHX_ (coro_cctx *)arg);
851		1061
852	/* somebody or something will hit me for both perl_run and PL_restartop */	1062	/* somebody or something will hit me for both perl_run and PL_restartop */
853	PL_restartop = PL_op;	1063	PL_restartop = PL_op;
854	perl_run (PL_curinterp);	1064	perl_run (PL_curinterp);
855		1065
…		…
874	++cctx_count;	1084	++cctx_count;
875		1085
876	Newz (0, cctx, 1, coro_cctx);	1086	Newz (0, cctx, 1, coro_cctx);
877		1087
878	#if HAVE_MMAP	1088	#if HAVE_MMAP
879
880	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1089	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
881	/* mmap supposedly does allocate-on-write for us */	1090	/* mmap supposedly does allocate-on-write for us */
882	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1091	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
883		1092
884	if (cctx->sptr != (void *)-1)	1093	if (cctx->sptr != (void *)-1)
…		…
905	stack_start = cctx->sptr;	1114	stack_start = cctx->sptr;
906	stack_size = cctx->ssize;	1115	stack_size = cctx->ssize;
907	}	1116	}
908		1117
909	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1118	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
910	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1119	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
911		1120
912	return cctx;	1121	return cctx;
913	}	1122	}
914		1123
915	static void	1124	static void
…		…
932	Safefree (cctx->sptr);	1141	Safefree (cctx->sptr);
933		1142
934	Safefree (cctx);	1143	Safefree (cctx);
935	}	1144	}
936		1145
		1146	/* wether this cctx should be destructed */
		1147	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1148
937	static coro_cctx *	1149	static coro_cctx *
938	cctx_get (pTHX)	1150	cctx_get (pTHX)
939	{	1151	{
940	while (cctx_first)	1152	while (expect_true (cctx_first))
941	{	1153	{
942	coro_cctx *cctx = cctx_first;	1154	coro_cctx *cctx = cctx_first;
943	cctx_first = cctx->next;	1155	cctx_first = cctx->next;
944	--cctx_idle;	1156	--cctx_idle;
945		1157
946	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1158	if (expect_true (!CCTX_EXPIRED (cctx)))
947	return cctx;	1159	return cctx;
948		1160
949	cctx_destroy (cctx);	1161	cctx_destroy (cctx);
950	}	1162	}
951		1163
…		…
954		1166
955	static void	1167	static void
956	cctx_put (coro_cctx *cctx)	1168	cctx_put (coro_cctx *cctx)
957	{	1169	{
958	/* free another cctx if overlimit */	1170	/* free another cctx if overlimit */
959	if (cctx_idle >= MAX_IDLE_CCTX)	1171	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
960	{	1172	{
961	coro_cctx *first = cctx_first;	1173	coro_cctx *first = cctx_first;
962	cctx_first = first->next;	1174	cctx_first = first->next;
963	--cctx_idle;	1175	--cctx_idle;
964		1176
…		…
970	cctx_first = cctx;	1182	cctx_first = cctx;
971	}	1183	}
972		1184
973	/ coroutine switching ***************************************************/	1185	/ coroutine switching ***************************************************/
974		1186
975	static void NOINLINE	1187	static void
976	transfer_check (pTHX_ struct coro prev, struct coro next)	1188	transfer_check (pTHX_ struct coro prev, struct coro next)
977	{	1189	{
978	if (prev != next)	1190	if (expect_true (prev != next))
979	{	1191	{
980	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))	1192	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
981	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1193	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
982		1194
983	if (next->flags & CF_RUNNING)	1195	if (expect_false (next->flags & CF_RUNNING))
984	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1196	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
985		1197
986	if (next->flags & CF_DESTROYED)	1198	if (expect_false (next->flags & CF_DESTROYED))
987	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1199	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
988		1200
		1201	#if !PERL_VERSION_ATLEAST (5,10,0)
989	if (PL_lex_state != LEX_NOTPARSING)	1202	if (expect_false (PL_lex_state != LEX_NOTPARSING))
990	croak ("Coro::State::transfer called while parsing, but this is not supported");	1203	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1204	#endif
991	}	1205	}
992	}	1206	}
993		1207
994	/* always use the TRANSFER macro */	1208	/* always use the TRANSFER macro */
995	static void NOINLINE	1209	static void NOINLINE
996	transfer (pTHX_ struct coro prev, struct coro next)	1210	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
997	{	1211	{
998	dSTACKLEVEL;	1212	dSTACKLEVEL;
999		1213
1000	/* sometimes transfer is only called to set idle_sp */	1214	/* sometimes transfer is only called to set idle_sp */
1001	if (!next)	1215	if (expect_false (!next))
1002	{	1216	{
1003	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1217	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1004	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1218	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1005	}	1219	}
1006	else if (prev != next)	1220	else if (expect_true (prev != next))
1007	{	1221	{
		1222	static volatile int has_throw;
1008	coro_cctx *prev__cctx;	1223	coro_cctx *prev__cctx;
1009		1224
1010	if (prev->flags & CF_NEW)	1225	if (expect_false (prev->flags & CF_NEW))
1011	{	1226	{
1012	/* create a new empty context */	1227	/* create a new empty context */
1013	Newz (0, prev->cctx, 1, coro_cctx);	1228	Newz (0, prev->cctx, 1, coro_cctx);
1014	prev->flags &= ~CF_NEW;	1229	prev->flags &= ~CF_NEW;
1015	prev->flags \|= CF_RUNNING;	1230	prev->flags \|= CF_RUNNING;
…		…
1018	prev->flags &= ~CF_RUNNING;	1233	prev->flags &= ~CF_RUNNING;
1019	next->flags \|= CF_RUNNING;	1234	next->flags \|= CF_RUNNING;
1020		1235
1021	LOCK;	1236	LOCK;
1022		1237
		1238	/* first get rid of the old state */
		1239	save_perl (aTHX_ prev);
		1240
1023	if (next->flags & CF_NEW)	1241	if (expect_false (next->flags & CF_NEW))
1024	{	1242	{
1025	/* need to start coroutine */	1243	/* need to start coroutine */
1026	next->flags &= ~CF_NEW;	1244	next->flags &= ~CF_NEW;
1027	/* first get rid of the old state */
1028	save_perl (aTHX_ prev);
1029	/* setup coroutine call */	1245	/* setup coroutine call */
1030	coro_setup (aTHX_ next);	1246	coro_setup (aTHX_ next);
1031	}	1247	}
1032	else	1248	else
1033	{
1034	/* coroutine already started */
1035	save_perl (aTHX_ prev);
1036	load_perl (aTHX_ next);	1249	load_perl (aTHX_ next);
1037	}
1038		1250
1039	prev__cctx = prev->cctx;	1251	prev__cctx = prev->cctx;
1040		1252
1041	/* possibly "free" the cctx */	1253	/* possibly "free" the cctx */
1042	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1254	if (expect_true (
		1255	prev__cctx->idle_sp == STACKLEVEL
		1256	&& !(prev__cctx->flags & CC_TRACE)
		1257	&& !force_cctx
		1258	))
1043	{	1259	{
1044	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1260	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1045	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1261	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1046		1262
1047	prev->cctx = 0;	1263	prev->cctx = 0;
1048		1264
		1265	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1266	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1267	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1268	if (!next->cctx)
		1269	next->cctx = cctx_get (aTHX);
		1270
1049	cctx_put (prev__cctx);	1271	cctx_put (prev__cctx);
1050	}	1272	}
1051		1273
1052	++next->usecount;	1274	++next->usecount;
1053		1275
1054	if (!next->cctx)	1276	if (expect_true (!next->cctx))
1055	next->cctx = cctx_get (aTHX);	1277	next->cctx = cctx_get (aTHX);
1056		1278
		1279	has_throw = !!next->throw;
		1280
1057	if (prev__cctx != next->cctx)	1281	if (expect_false (prev__cctx != next->cctx))
1058	{	1282	{
1059	prev__cctx->top_env = PL_top_env;	1283	prev__cctx->top_env = PL_top_env;
1060	PL_top_env = next->cctx->top_env;	1284	PL_top_env = next->cctx->top_env;
1061	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1285	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1062	}	1286	}
1063		1287
1064	free_coro_mortal (aTHX);	1288	free_coro_mortal (aTHX);
1065	UNLOCK;	1289	UNLOCK;
		1290
		1291	if (expect_false (has_throw))
		1292	{
		1293	struct coro *coro = SvSTATE (coro_current);
		1294
		1295	if (coro->throw)
		1296	{
		1297	SV *exception = coro->throw;
		1298	coro->throw = 0;
		1299	sv_setsv (ERRSV, exception);
		1300	croak (0);
		1301	}
		1302	}
1066	}	1303	}
1067	}	1304	}
1068		1305
1069	struct transfer_args	1306	struct transfer_args
1070	{	1307	{
1071	struct coro prev, next;	1308	struct coro prev, next;
1072	};	1309	};
1073		1310
1074	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1311	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1075	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1312	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1076		1313
1077	/ high level stuff ******************************************************/	1314	/ high level stuff ******************************************************/
1078		1315
1079	static int	1316	static int
…		…
1105	save_perl (aTHX_ &temp);	1342	save_perl (aTHX_ &temp);
1106	load_perl (aTHX_ coro);	1343	load_perl (aTHX_ coro);
1107		1344
1108	coro_destroy (aTHX_ coro);	1345	coro_destroy (aTHX_ coro);
1109		1346
1110	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1347	load_perl (aTHX_ &temp);
1111		1348
1112	coro->mainstack = 0;	1349	coro->slot = 0;
1113	}	1350	}
1114		1351
1115	cctx_destroy (coro->cctx);	1352	cctx_destroy (coro->cctx);
1116	SvREFCNT_dec (coro->args);	1353	SvREFCNT_dec (coro->args);
1117		1354
…		…
1173	{	1410	{
1174	dTHX;	1411	dTHX;
1175	struct transfer_args ta;	1412	struct transfer_args ta;
1176		1413
1177	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1414	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1178	TRANSFER (ta);	1415	TRANSFER (ta, 1);
1179	}	1416	}
1180		1417
1181	/ Coro ******************************************************************/	1418	/ Coro ******************************************************************/
1182		1419
1183	static void	1420	static void
…		…
1185	{	1422	{
1186	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1423	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1187	}	1424	}
1188		1425
1189	static SV *	1426	static SV *
1190	coro_deq (pTHX_ int min_prio)	1427	coro_deq (pTHX)
1191	{	1428	{
1192	int prio = PRIO_MAX - PRIO_MIN;	1429	int prio;
1193		1430
1194	min_prio -= PRIO_MIN;
1195	if (min_prio < 0)
1196	min_prio = 0;
1197
1198	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1431	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1199	if (AvFILLp (coro_ready [prio]) >= 0)	1432	if (AvFILLp (coro_ready [prio]) >= 0)
1200	return av_shift (coro_ready [prio]);	1433	return av_shift (coro_ready [prio]);
1201		1434
1202	return 0;	1435	return 0;
1203	}	1436	}
…		…
1205	static int	1438	static int
1206	api_ready (SV *coro_sv)	1439	api_ready (SV *coro_sv)
1207	{	1440	{
1208	dTHX;	1441	dTHX;
1209	struct coro *coro;	1442	struct coro *coro;
		1443	SV *sv_hook;
		1444	void (*xs_hook)(void);
1210		1445
1211	if (SvROK (coro_sv))	1446	if (SvROK (coro_sv))
1212	coro_sv = SvRV (coro_sv);	1447	coro_sv = SvRV (coro_sv);
1213		1448
1214	coro = SvSTATE (coro_sv);	1449	coro = SvSTATE (coro_sv);
…		…
1217	return 0;	1452	return 0;
1218		1453
1219	coro->flags \|= CF_READY;	1454	coro->flags \|= CF_READY;
1220		1455
1221	LOCK;	1456	LOCK;
		1457
		1458	sv_hook = coro_nready ? 0 : coro_readyhook;
		1459	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1460
1222	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1461	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1223	++coro_nready;	1462	++coro_nready;
		1463
1224	UNLOCK;	1464	UNLOCK;
		1465
		1466	if (sv_hook)
		1467	{
		1468	dSP;
		1469
		1470	ENTER;
		1471	SAVETMPS;
		1472
		1473	PUSHMARK (SP);
		1474	PUTBACK;
		1475	call_sv (sv_hook, G_DISCARD);
		1476	SPAGAIN;
		1477
		1478	FREETMPS;
		1479	LEAVE;
		1480	}
		1481
		1482	if (xs_hook)
		1483	xs_hook ();
1225		1484
1226	return 1;	1485	return 1;
1227	}	1486	}
1228		1487
1229	static int	1488	static int
…		…
1239	SV prev_sv, next_sv;	1498	SV prev_sv, next_sv;
1240		1499
1241	for (;;)	1500	for (;;)
1242	{	1501	{
1243	LOCK;	1502	LOCK;
1244	next_sv = coro_deq (aTHX_ PRIO_MIN);	1503	next_sv = coro_deq (aTHX);
1245		1504
1246	/* nothing to schedule: call the idle handler */	1505	/* nothing to schedule: call the idle handler */
1247	if (!next_sv)	1506	if (expect_false (!next_sv))
1248	{	1507	{
1249	dSP;	1508	dSP;
1250	UNLOCK;	1509	UNLOCK;
1251		1510
1252	ENTER;	1511	ENTER;
1253	SAVETMPS;	1512	SAVETMPS;
1254		1513
1255	PUSHMARK (SP);	1514	PUSHMARK (SP);
1256	PUTBACK;	1515	PUTBACK;
1257	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1516	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1517	SPAGAIN;
1258		1518
1259	FREETMPS;	1519	FREETMPS;
1260	LEAVE;	1520	LEAVE;
1261	continue;	1521	continue;
1262	}	1522	}
1263		1523
1264	ta->next = SvSTATE (next_sv);	1524	ta->next = SvSTATE (next_sv);
1265		1525
1266	/* cannot transfer to destroyed coros, skip and look for next */	1526	/* cannot transfer to destroyed coros, skip and look for next */
1267	if (ta->next->flags & CF_DESTROYED)	1527	if (expect_false (ta->next->flags & CF_DESTROYED))
1268	{	1528	{
1269	UNLOCK;	1529	UNLOCK;
1270	SvREFCNT_dec (next_sv);	1530	SvREFCNT_dec (next_sv);
1271	/* coro_nready is already taken care of by destroy */	1531	/* coro_nready is already taken care of by destroy */
1272	continue;	1532	continue;
…		…
1317	{	1577	{
1318	dTHX;	1578	dTHX;
1319	struct transfer_args ta;	1579	struct transfer_args ta;
1320		1580
1321	prepare_schedule (aTHX_ &ta);	1581	prepare_schedule (aTHX_ &ta);
1322	TRANSFER (ta);	1582	TRANSFER (ta, 1);
1323	}	1583	}
1324		1584
1325	static int	1585	static int
1326	api_cede (void)	1586	api_cede (void)
1327	{	1587	{
1328	dTHX;	1588	dTHX;
1329	struct transfer_args ta;	1589	struct transfer_args ta;
1330		1590
1331	prepare_cede (aTHX_ &ta);	1591	prepare_cede (aTHX_ &ta);
1332		1592
1333	if (ta.prev != ta.next)	1593	if (expect_true (ta.prev != ta.next))
1334	{	1594	{
1335	TRANSFER (ta);	1595	TRANSFER (ta, 1);
1336	return 1;	1596	return 1;
1337	}	1597	}
1338	else	1598	else
1339	return 0;	1599	return 0;
1340	}	1600	}
…		…
1345	dTHX;	1605	dTHX;
1346	struct transfer_args ta;	1606	struct transfer_args ta;
1347		1607
1348	if (prepare_cede_notself (aTHX_ &ta))	1608	if (prepare_cede_notself (aTHX_ &ta))
1349	{	1609	{
1350	TRANSFER (ta);	1610	TRANSFER (ta, 1);
1351	return 1;	1611	return 1;
1352	}	1612	}
1353	else	1613	else
1354	return 0;	1614	return 0;
1355	}	1615	}
…		…
1374	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);	1634	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
1375		1635
1376	if (coro->flags & CF_RUNNING)	1636	if (coro->flags & CF_RUNNING)
1377	PL_runops = RUNOPS_DEFAULT;	1637	PL_runops = RUNOPS_DEFAULT;
1378	else	1638	else
1379	coro->runops = RUNOPS_DEFAULT;	1639	coro->slot->runops = RUNOPS_DEFAULT;
		1640	}
		1641	}
		1642
		1643	static int
		1644	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
		1645	{
		1646	AV *padlist;
		1647	AV av = (AV )mg->mg_obj;
		1648
		1649	abort ();
		1650
		1651	return 0;
		1652	}
		1653
		1654	static MGVTBL coro_gensub_vtbl = {
		1655	0, 0, 0, 0,
		1656	coro_gensub_free
		1657	};
		1658
		1659	/*****************************************************************************/
		1660	/* PerlIO::cede */
		1661
		1662	typedef struct
		1663	{
		1664	PerlIOBuf base;
		1665	NV next, every;
		1666	} PerlIOCede;
		1667
		1668	static IV
		1669	PerlIOCede_pushed (pTHX_ PerlIO f, const char mode, SV arg, PerlIO_funcs tab)
		1670	{
		1671	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1672
		1673	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1674	self->next = nvtime () + self->every;
		1675
		1676	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1677	}
		1678
		1679	static SV *
		1680	PerlIOCede_getarg (pTHX_ PerlIO f, CLONE_PARAMS param, int flags)
		1681	{
		1682	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1683
		1684	return newSVnv (self->every);
		1685	}
		1686
		1687	static IV
		1688	PerlIOCede_flush (pTHX_ PerlIO *f)
		1689	{
		1690	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1691	double now = nvtime ();
		1692
		1693	if (now >= self->next)
1380	}	1694	{
		1695	api_cede ();
		1696	self->next = now + self->every;
		1697	}
		1698
		1699	return PerlIOBuf_flush (aTHX_ f);
1381	}	1700	}
		1701
		1702	static PerlIO_funcs PerlIO_cede =
		1703	{
		1704	sizeof(PerlIO_funcs),
		1705	"cede",
		1706	sizeof(PerlIOCede),
		1707	PERLIO_K_DESTRUCT \| PERLIO_K_RAW,
		1708	PerlIOCede_pushed,
		1709	PerlIOBuf_popped,
		1710	PerlIOBuf_open,
		1711	PerlIOBase_binmode,
		1712	PerlIOCede_getarg,
		1713	PerlIOBase_fileno,
		1714	PerlIOBuf_dup,
		1715	PerlIOBuf_read,
		1716	PerlIOBuf_unread,
		1717	PerlIOBuf_write,
		1718	PerlIOBuf_seek,
		1719	PerlIOBuf_tell,
		1720	PerlIOBuf_close,
		1721	PerlIOCede_flush,
		1722	PerlIOBuf_fill,
		1723	PerlIOBase_eof,
		1724	PerlIOBase_error,
		1725	PerlIOBase_clearerr,
		1726	PerlIOBase_setlinebuf,
		1727	PerlIOBuf_get_base,
		1728	PerlIOBuf_bufsiz,
		1729	PerlIOBuf_get_ptr,
		1730	PerlIOBuf_get_cnt,
		1731	PerlIOBuf_set_ptrcnt,
		1732	};
		1733
1382		1734
1383	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1735	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1384		1736
1385	PROTOTYPES: DISABLE	1737	PROTOTYPES: DISABLE
1386		1738
…		…
1389	#ifdef USE_ITHREADS	1741	#ifdef USE_ITHREADS
1390	MUTEX_INIT (&coro_mutex);	1742	MUTEX_INIT (&coro_mutex);
1391	#endif	1743	#endif
1392	BOOT_PAGESIZE;	1744	BOOT_PAGESIZE;
1393		1745
1394	irsgv = gv_fetchpv ("/", 1, SVt_PV);	1746	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1747	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1748
		1749	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1750	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1751	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1752
		1753	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1754	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1755	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395		1756
1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1757	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397		1758
1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1759	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1760	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1404	main_top_env = PL_top_env;	1765	main_top_env = PL_top_env;
1405		1766
1406	while (main_top_env->je_prev)	1767	while (main_top_env->je_prev)
1407	main_top_env = main_top_env->je_prev;	1768	main_top_env = main_top_env->je_prev;
1408		1769
1409	coroapi.ver = CORO_API_VERSION;	1770	coroapi.ver = CORO_API_VERSION;
		1771	coroapi.rev = CORO_API_REVISION;
1410	coroapi.transfer = api_transfer;	1772	coroapi.transfer = api_transfer;
		1773
		1774	{
		1775	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1776
		1777	if (!svp) croak ("Time::HiRes is required");
		1778	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1779
		1780	nvtime = INT2PTR (double ()(), SvIV (svp));
		1781	}
1411		1782
1412	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1783	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1413	}	1784	}
1414		1785
1415	SV *	1786	SV *
1416	new (char *klass, ...)	1787	new (char *klass, ...)
1417	CODE:	1788	CODE:
1418	{	1789	{
1419	struct coro *coro;	1790	struct coro *coro;
		1791	MAGIC *mg;
1420	HV *hv;	1792	HV *hv;
1421	int i;	1793	int i;
1422		1794
1423	Newz (0, coro, 1, struct coro);	1795	Newz (0, coro, 1, struct coro);
1424	coro->args = newAV ();	1796	coro->args = newAV ();
…		…
1427	if (coro_first) coro_first->prev = coro;	1799	if (coro_first) coro_first->prev = coro;
1428	coro->next = coro_first;	1800	coro->next = coro_first;
1429	coro_first = coro;	1801	coro_first = coro;
1430		1802
1431	coro->hv = hv = newHV ();	1803	coro->hv = hv = newHV ();
1432	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1804	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1805	mg->mg_flags \|= MGf_DUP;
1433	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1806	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1434		1807
		1808	av_extend (coro->args, items - 1);
1435	for (i = 1; i < items; i++)	1809	for (i = 1; i < items; i++)
1436	av_push (coro->args, newSVsv (ST (i)));	1810	av_push (coro->args, newSVsv (ST (i)));
1437	}	1811	}
1438	OUTPUT:	1812	OUTPUT:
1439	RETVAL	1813	RETVAL
…		…
1450	Coro::cede_notself = 4	1824	Coro::cede_notself = 4
1451	CODE:	1825	CODE:
1452	{	1826	{
1453	struct transfer_args ta;	1827	struct transfer_args ta;
1454		1828
		1829	PUTBACK;
1455	switch (ix)	1830	switch (ix)
1456	{	1831	{
1457	case 0:	1832	case 0:
1458	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1833	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1459	ta.next = 0;	1834	ta.next = 0;
1460	break;	1835	break;
1461		1836
1462	case 1:	1837	case 1:
1463	if (items != 2)	1838	if (items != 2)
1464	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1839	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1465		1840
1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1841	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1467	break;	1842	break;
1468		1843
1469	case 2:	1844	case 2:
…		…
1478	if (!prepare_cede_notself (aTHX_ &ta))	1853	if (!prepare_cede_notself (aTHX_ &ta))
1479	XSRETURN_EMPTY;	1854	XSRETURN_EMPTY;
1480		1855
1481	break;	1856	break;
1482	}	1857	}
		1858	SPAGAIN;
1483		1859
1484	BARRIER;	1860	BARRIER;
		1861	PUTBACK;
1485	TRANSFER (ta);	1862	TRANSFER (ta, 0);
1486		1863	SPAGAIN; /* might be the sp of a different coroutine now */
1487	if (GIMME_V != G_VOID && ta.next != ta.prev)	1864	/* be extra careful not to ever do anything after TRANSFER */
1488	XSRETURN_YES;
1489	}	1865	}
1490		1866
1491	bool	1867	bool
1492	_destroy (SV *coro_sv)	1868	_destroy (SV *coro_sv)
1493	CODE:	1869	CODE:
1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1870	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1495	OUTPUT:	1871	OUTPUT:
1496	RETVAL	1872	RETVAL
1497		1873
1498	void	1874	void
1499	_exit (code)	1875	_exit (int code)
1500	int code
1501	PROTOTYPE: $	1876	PROTOTYPE: $
1502	CODE:	1877	CODE:
1503	_exit (code);	1878	_exit (code);
1504		1879
1505	int	1880	int
…		…
1539	call (Coro::State coro, SV *coderef)	1914	call (Coro::State coro, SV *coderef)
1540	ALIAS:	1915	ALIAS:
1541	eval = 1	1916	eval = 1
1542	CODE:	1917	CODE:
1543	{	1918	{
1544	if (coro->mainstack)	1919	if (coro->mainstack && ((coro->flags & CF_RUNNING) \|\| coro->slot))
1545	{	1920	{
1546	struct coro temp;	1921	struct coro temp;
1547	Zero (&temp, 1, struct coro);
1548		1922
1549	if (!(coro->flags & CF_RUNNING))	1923	if (!(coro->flags & CF_RUNNING))
1550	{	1924	{
		1925	PUTBACK;
1551	save_perl (aTHX_ &temp);	1926	save_perl (aTHX_ &temp);
1552	load_perl (aTHX_ coro);	1927	load_perl (aTHX_ coro);
1553	}	1928	}
1554		1929
1555	{	1930	{
1556	dSP;	1931	dSP;
1557	ENTER;	1932	ENTER;
1558	SAVETMPS;	1933	SAVETMPS;
		1934	PUTBACK;
		1935	PUSHSTACK;
1559	PUSHMARK (SP);	1936	PUSHMARK (SP);
1560	PUTBACK;	1937
1561	if (ix)	1938	if (ix)
1562	eval_sv (coderef, 0);	1939	eval_sv (coderef, 0);
1563	else	1940	else
1564	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	1941	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1942
		1943	POPSTACK;
1565	SPAGAIN;	1944	SPAGAIN;
1566	FREETMPS;	1945	FREETMPS;
1567	LEAVE;	1946	LEAVE;
1568	PUTBACK;	1947	PUTBACK;
1569	}	1948	}
1570		1949
1571	if (!(coro->flags & CF_RUNNING))	1950	if (!(coro->flags & CF_RUNNING))
1572	{	1951	{
1573	save_perl (aTHX_ coro);	1952	save_perl (aTHX_ coro);
1574	load_perl (aTHX_ &temp);	1953	load_perl (aTHX_ &temp);
		1954	SPAGAIN;
1575	}	1955	}
1576	}	1956	}
1577	}	1957	}
1578		1958
1579	SV *	1959	SV *
…		…
1591		1971
1592	void	1972	void
1593	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	1973	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
1594		1974
1595	SV *	1975	SV *
1596	has_stack (Coro::State coro)	1976	has_cctx (Coro::State coro)
1597	PROTOTYPE: $	1977	PROTOTYPE: $
1598	CODE:	1978	CODE:
1599	RETVAL = boolSV (!!coro->cctx);	1979	RETVAL = boolSV (!!coro->cctx);
1600	OUTPUT:	1980	OUTPUT:
1601	RETVAL	1981	RETVAL
…		…
1620	case 1: RETVAL = coro->usecount; break;	2000	case 1: RETVAL = coro->usecount; break;
1621	}	2001	}
1622	OUTPUT:	2002	OUTPUT:
1623	RETVAL	2003	RETVAL
1624		2004
		2005	void
		2006	force_cctx ()
		2007	CODE:
		2008	struct coro *coro = SvSTATE (coro_current);
		2009	coro->cctx->idle_sp = 0;
		2010
		2011	void
		2012	swap_defsv (Coro::State self)
		2013	PROTOTYPE: $
		2014	ALIAS:
		2015	swap_defav = 1
		2016	CODE:
		2017	if (!self->slot)
		2018	croak ("cannot swap state with coroutine that has no saved state");
		2019	else
		2020	{
		2021	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2022	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		2023
		2024	SV tmp = src; src = dst; *dst = tmp;
		2025	}
1625		2026
1626	MODULE = Coro::State PACKAGE = Coro	2027	MODULE = Coro::State PACKAGE = Coro
1627		2028
1628	BOOT:	2029	BOOT:
1629	{	2030	{
1630	int i;	2031	int i;
1631		2032
1632	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1633	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1634	av_async_pool = get_av ("Coro::async_pool", TRUE);	2033	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2034	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2035	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1635		2036
1636	coro_current = get_sv ("Coro::current", FALSE);	2037	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1637	SvREADONLY_on (coro_current);	2038	SvREADONLY_on (coro_current);
1638		2039
1639	coro_stash = gv_stashpv ("Coro", TRUE);	2040	coro_stash = gv_stashpv ("Coro", TRUE);
1640		2041
1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2042	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2043	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2044	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2045	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1647		2048
1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2049	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1649	coro_ready[i] = newAV ();	2050	coro_ready[i] = newAV ();
1650		2051
1651	{	2052	{
1652	SV *sv = perl_get_sv("Coro::API", 1);	2053	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2054	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1653		2055
1654	coroapi.schedule = api_schedule;	2056	coroapi.schedule = api_schedule;
1655	coroapi.cede = api_cede;	2057	coroapi.cede = api_cede;
1656	coroapi.cede_notself = api_cede_notself;	2058	coroapi.cede_notself = api_cede_notself;
1657	coroapi.ready = api_ready;	2059	coroapi.ready = api_ready;
…		…
1668	void	2070	void
1669	_set_current (SV *current)	2071	_set_current (SV *current)
1670	PROTOTYPE: $	2072	PROTOTYPE: $
1671	CODE:	2073	CODE:
1672	SvREFCNT_dec (SvRV (coro_current));	2074	SvREFCNT_dec (SvRV (coro_current));
1673	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2075	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2076
		2077	void
		2078	_set_readyhook (SV *hook)
		2079	PROTOTYPE: $
		2080	CODE:
		2081	LOCK;
		2082	SvREFCNT_dec (coro_readyhook);
		2083	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2084	UNLOCK;
1674		2085
1675	int	2086	int
1676	prio (Coro::State coro, int newprio = 0)	2087	prio (Coro::State coro, int newprio = 0)
1677	ALIAS:	2088	ALIAS:
1678	nice = 1	2089	nice = 1
…		…
1708	CODE:	2119	CODE:
1709	RETVAL = coro_nready;	2120	RETVAL = coro_nready;
1710	OUTPUT:	2121	OUTPUT:
1711	RETVAL	2122	RETVAL
1712		2123
		2124	void
		2125	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2126	PROTOTYPE: $;$
		2127	CODE:
		2128	SvREFCNT_dec (self->throw);
		2129	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2130
1713	# for async_pool speedup	2131	# for async_pool speedup
1714	void	2132	void
1715	_pool_1 (SV *cb)	2133	_pool_1 (SV *cb)
1716	CODE:	2134	CODE:
1717	{	2135	{
…		…
1721	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2139	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1722	AV *invoke_av;	2140	AV *invoke_av;
1723	int i, len;	2141	int i, len;
1724		2142
1725	if (!invoke)	2143	if (!invoke)
		2144	{
		2145	SV *old = PL_diehook;
		2146	PL_diehook = 0;
		2147	SvREFCNT_dec (old);
1726	croak ("\3terminate\2\n");	2148	croak ("\3async_pool terminate\2\n");
		2149	}
1727		2150
1728	SvREFCNT_dec (coro->asp_deffh);	2151	SvREFCNT_dec (coro->saved_deffh);
1729	coro->asp_deffh = SvREFCNT_inc (PL_defoutgv);	2152	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1730		2153
1731	hv_store (hv, "desc", sizeof ("desc") - 1,	2154	hv_store (hv, "desc", sizeof ("desc") - 1,
1732	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2155	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1733		2156
1734	invoke_av = (AV *)SvRV (invoke);	2157	invoke_av = (AV *)SvRV (invoke);
…		…
1738		2161
1739	if (len > 0)	2162	if (len > 0)
1740	{	2163	{
1741	av_fill (defav, len - 1);	2164	av_fill (defav, len - 1);
1742	for (i = 0; i < len; ++i)	2165	for (i = 0; i < len; ++i)
1743	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2166	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1744	}	2167	}
1745		2168
1746	SvREFCNT_dec (invoke);	2169	SvREFCNT_dec (invoke);
1747	}	2170	}
1748		2171
…		…
1752	{	2175	{
1753	struct coro *coro = SvSTATE (coro_current);	2176	struct coro *coro = SvSTATE (coro_current);
1754		2177
1755	sv_setsv (cb, &PL_sv_undef);	2178	sv_setsv (cb, &PL_sv_undef);
1756		2179
1757	SvREFCNT_dec (PL_defoutgv); PL_defoutgv = coro->asp_deffh;	2180	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
1758	coro->asp_deffh = 0;	2181	coro->saved_deffh = 0;
1759		2182
1760	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2183	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1761	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2184	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2185	{
		2186	SV *old = PL_diehook;
		2187	PL_diehook = 0;
		2188	SvREFCNT_dec (old);
1762	croak ("\3terminate\2\n");	2189	croak ("\3async_pool terminate\2\n");
		2190	}
1763		2191
1764	av_clear (GvAV (PL_defgv));	2192	av_clear (GvAV (PL_defgv));
1765	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2193	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1766	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2194	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1767		2195
…		…
1771	api_trace (coro_current, 0);	2199	api_trace (coro_current, 0);
1772		2200
1773	av_push (av_async_pool, newSVsv (coro_current));	2201	av_push (av_async_pool, newSVsv (coro_current));
1774	}	2202	}
1775		2203
		2204	#if 0
		2205
		2206	void
		2207	_generator_call (...)
		2208	PROTOTYPE: @
		2209	PPCODE:
		2210	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2211	xxxx
		2212	abort ();
		2213
		2214	SV *
		2215	gensub (SV *sub, ...)
		2216	PROTOTYPE: &;@
		2217	CODE:
		2218	{
		2219	struct coro *coro;
		2220	MAGIC *mg;
		2221	CV *xcv;
		2222	CV ncv = (CV )newSV_type (SVt_PVCV);
		2223	int i;
		2224
		2225	CvGV (ncv) = CvGV (cv);
		2226	CvFILE (ncv) = CvFILE (cv);
		2227
		2228	Newz (0, coro, 1, struct coro);
		2229	coro->args = newAV ();
		2230	coro->flags = CF_NEW;
		2231
		2232	av_extend (coro->args, items - 1);
		2233	for (i = 1; i < items; i++)
		2234	av_push (coro->args, newSVsv (ST (i)));
		2235
		2236	CvISXSUB_on (ncv);
		2237	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2238
		2239	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2240
		2241	CvXSUB (ncv) = CvXSUB (xcv);
		2242	CvANON_on (ncv);
		2243
		2244	mg = sv_magicext ((SV )ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char )coro, 0);
		2245	RETVAL = newRV_noinc ((SV *)ncv);
		2246	}
		2247	OUTPUT:
		2248	RETVAL
		2249
		2250	#endif
		2251
1776		2252
1777	MODULE = Coro::State PACKAGE = Coro::AIO	2253	MODULE = Coro::State PACKAGE = Coro::AIO
1778		2254
1779	SV *	2255	void
1780	_get_state ()	2256	_get_state (SV *self)
1781	CODE:	2257	PPCODE:
1782	{	2258	{
1783	struct io_state *data;	2259	AV *defav = GvAV (PL_defgv);
1784		2260	AV *av = newAV ();
		2261	int i;
1785	RETVAL = newSV (sizeof (struct io_state));	2262	SV *data_sv = newSV (sizeof (struct io_state));
1786	data = (struct io_state *)SvPVX (RETVAL);	2263	struct io_state data = (struct io_state )SvPVX (data_sv);
1787	SvCUR_set (RETVAL, sizeof (struct io_state));	2264	SvCUR_set (data_sv, sizeof (struct io_state));
1788	SvPOK_only (RETVAL);	2265	SvPOK_only (data_sv);
1789		2266
1790	data->errorno = errno;	2267	data->errorno = errno;
1791	data->laststype = PL_laststype;	2268	data->laststype = PL_laststype;
1792	data->laststatval = PL_laststatval;	2269	data->laststatval = PL_laststatval;
1793	data->statcache = PL_statcache;	2270	data->statcache = PL_statcache;
		2271
		2272	av_extend (av, AvFILLp (defav) + 1 + 1);
		2273
		2274	for (i = 0; i <= AvFILLp (defav); ++i)
		2275	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2276
		2277	av_push (av, data_sv);
		2278
		2279	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2280
		2281	api_ready (self);
1794	}	2282	}
1795	OUTPUT:
1796	RETVAL
1797		2283
1798	void	2284	void
1799	_set_state (char *data_)	2285	_set_state (SV *state)
1800	PROTOTYPE: $	2286	PROTOTYPE: $
1801	CODE:	2287	PPCODE:
1802	{	2288	{
1803	struct io_state data = (void )data_;	2289	AV av = (AV )SvRV (state);
		2290	struct io_state data = (struct io_state )SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2291	int i;
1804		2292
1805	errno = data->errorno;	2293	errno = data->errorno;
1806	PL_laststype = data->laststype;	2294	PL_laststype = data->laststype;
1807	PL_laststatval = data->laststatval;	2295	PL_laststatval = data->laststatval;
1808	PL_statcache = data->statcache;	2296	PL_statcache = data->statcache;
1809	}
1810		2297
		2298	EXTEND (SP, AvFILLp (av));
		2299	for (i = 0; i < AvFILLp (av); ++i)
		2300	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2301	}
		2302
		2303
		2304	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2305
		2306	BOOT:
		2307	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2308
		2309	SV *
		2310	_schedule (...)
		2311	PROTOTYPE: @
		2312	CODE:
		2313	{
		2314	static int incede;
		2315
		2316	api_cede_notself ();
		2317
		2318	++incede;
		2319	while (coro_nready >= incede && api_cede ())
		2320	;
		2321
		2322	sv_setsv (sv_activity, &PL_sv_undef);
		2323	if (coro_nready >= incede)
		2324	{
		2325	PUSHMARK (SP);
		2326	PUTBACK;
		2327	call_pv ("Coro::AnyEvent::_activity", G_DISCARD \| G_EVAL);
		2328	SPAGAIN;
		2329	}
		2330
		2331	--incede;
		2332	}
		2333
		2334
		2335	MODULE = Coro::State PACKAGE = PerlIO::cede
		2336
		2337	BOOT:
		2338	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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Comparing Coro/Coro/State.xs (file contents): Revision 1.183 by root, Wed Oct 3 19:19:06 2007 UTC vs. Revision 1.252 by root, Tue Nov 4 12:08:44 2008 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.183 by root, Wed Oct 3 19:19:06 2007 UTC vs.
Revision 1.252 by root, Tue Nov 4 12:08:44 2008 UTC