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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.187 by root, Fri Oct 5 20:31:18 2007 UTC vs.
Revision 1.231 by root, Thu Apr 24 10:31:59 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
		16	#ifdef WIN32
		17	# undef setjmp
		18	# undef longjmp
		19	# undef _exit
		20	#include <setjmp.h>
		21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
		23	#endif
14		24
15	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
16	# include <unistd.h>	26	# include <unistd.h>
17	# include <sys/mman.h>	27	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	28	# ifndef MAP_ANONYMOUS
70	# ifndef IS_PADCONST	80	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	81	# define IS_PADCONST(v) 0
72	# endif	82	# endif
73	#endif	83	#endif
74		84
		85	/* 5.8.8 */
		86	#ifndef GV_NOTQUAL
		87	# define GV_NOTQUAL 0
		88	#endif
		89	#ifndef newSV
		90	# define newSV(l) NEWSV(0,l)
		91	#endif
		92
		93	/* 5.11 */
		94	#ifndef CxHASARGS
		95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		96	#endif
		97
75	/* 5.8.7 */	98	/* 5.8.7 */
76	#ifndef SvRV_set	99	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	100	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	101	#endif
79		102
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		122
100	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	127	#else
104	# define attribute(x)	128	# define attribute(x)
105	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
106	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
107		135
108	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
109		137
110	#include "CoroAPI.h"	138	#include "CoroAPI.h"
111		139
…		…
130	static size_t coro_stacksize = CORO_STACKSIZE;	158	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
132	static AV main_mainstack; / used to differentiate between $main and others */	160	static AV main_mainstack; / used to differentiate between $main and others */
133	static JMPENV *main_top_env;	161	static JMPENV *main_top_env;
134	static HV coro_state_stash, coro_stash;	162	static HV coro_state_stash, coro_stash;
135	static SV coro_mortal; / will be freed after next transfer */	163	static volatile SV coro_mortal; / will be freed after next transfer */
136		164
137	static GV irsgv; / $/ */	165	static GV irsgv; / $/ */
		166	static GV stdoutgv; / STDOUT /
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV hv_sig; / %SIG */
138		170
139	/* async_pool helper stuff */	171	/* async_pool helper stuff */
140	static SV *sv_pool_rss;	172	static SV *sv_pool_rss;
141	static SV *sv_pool_size;	173	static SV *sv_pool_size;
142	static AV *av_async_pool;	174	static AV *av_async_pool;
…		…
178	CF_READY = 0x0002, /* coroutine is ready */	210	CF_READY = 0x0002, /* coroutine is ready */
179	CF_NEW = 0x0004, /* has never been switched to */	211	CF_NEW = 0x0004, /* has never been switched to */
180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	212	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181	};	213	};
182		214
		215	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		216	typedef struct {
		217	SV *defsv;
		218	AV *defav;
		219	SV *errsv;
		220	SV *irsgv;
		221	#define VAR(name,type) type name;
		222	# include "state.h"
		223	#undef VAR
		224	} perl_slots;
		225
		226	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		227
183	/* this is a structure representing a perl-level coroutine */	228	/* this is a structure representing a perl-level coroutine */
184	struct coro {	229	struct coro {
185	/* the c coroutine allocated to this perl coroutine, if any */	230	/* the c coroutine allocated to this perl coroutine, if any */
186	coro_cctx *cctx;	231	coro_cctx *cctx;
187		232
		233	/* process data */
		234	AV *mainstack;
		235	perl_slots slot; / basically the saved sp */
		236
188	/* data associated with this coroutine (initial args) */	237	AV args; / data associated with this coroutine (initial args) */
189	AV *args;	238	int refcnt; /* coroutines are refcounted, yes */
190	int refcnt;
191	int flags; /* CF_ flags */	239	int flags; /* CF_ flags */
192		240	HV hv; / the perl hash associated with this coro, if any */
193	/* optionally saved, might be zero */
194	AV defav; / @_ */
195	SV defsv; / $_ */
196	SV errsv; / $@ */
197	SV deffh; / default filehandle */
198	SV irssv; / $/ */
199	SV irssv_sv; / real $/ cache */
200
201	#define VAR(name,type) type name;
202	# include "state.h"
203	#undef VAR
204		241
205	/* statistics */	242	/* statistics */
206	int usecount; /* number of transfers to this coro */	243	int usecount; /* number of transfers to this coro */
207		244
208	/* coro process data */	245	/* coro process data */
209	int prio;	246	int prio;
210	//SV *throw;	247	SV throw; / exception to be thrown */
211		248
212	/* async_pool */	249	/* async_pool */
213	SV *saved_deffh;	250	SV *saved_deffh;
214		251
215	/* linked list */	252	/* linked list */
216	struct coro next, prev;	253	struct coro next, prev;
217	HV hv; / the perl hash associated with this coro, if any */
218	};	254	};
219		255
220	typedef struct coro *Coro__State;	256	typedef struct coro *Coro__State;
221	typedef struct coro *Coro__State_or_hashref;	257	typedef struct coro *Coro__State_or_hashref;
222		258
…		…
235	static int coro_nready;	271	static int coro_nready;
236	static struct coro *coro_first;	272	static struct coro *coro_first;
237		273
238	/ lowlevel stuff ********************************************************/	274	/ lowlevel stuff ********************************************************/
239		275
		276	static SV *
		277	coro_get_sv (pTHX_ const char *name, int create)
		278	{
		279	#if PERL_VERSION_ATLEAST (5,10,0)
		280	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		281	get_sv (name, create);
		282	#endif
		283	return get_sv (name, create);
		284	}
		285
		286	static AV *
		287	coro_get_av (pTHX_ const char *name, int create)
		288	{
		289	#if PERL_VERSION_ATLEAST (5,10,0)
		290	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		291	get_av (name, create);
		292	#endif
		293	return get_av (name, create);
		294	}
		295
		296	static HV *
		297	coro_get_hv (pTHX_ const char *name, int create)
		298	{
		299	#if PERL_VERSION_ATLEAST (5,10,0)
		300	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		301	get_hv (name, create);
		302	#endif
		303	return get_hv (name, create);
		304	}
		305
240	static AV *	306	static AV *
241	coro_clone_padlist (pTHX_ CV *cv)	307	coro_clone_padlist (pTHX_ CV *cv)
242	{	308	{
243	AV *padlist = CvPADLIST (cv);	309	AV *padlist = CvPADLIST (cv);
244	AV newpadlist, newpad;	310	AV newpadlist, newpad;
245		311
246	newpadlist = newAV ();	312	newpadlist = newAV ();
247	AvREAL_off (newpadlist);	313	AvREAL_off (newpadlist);
248	#if PERL_VERSION_ATLEAST (5,9,0)	314	#if PERL_VERSION_ATLEAST (5,10,0)
249	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	315	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
250	#else	316	#else
251	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	317	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
252	#endif	318	#endif
253	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	319	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
291		357
292	/* casting is fun. */	358	/* casting is fun. */
293	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	359	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
294	free_padlist (aTHX_ padlist);	360	free_padlist (aTHX_ padlist);
295		361
296	SvREFCNT_dec (av);
297
298	return 0;	362	return 0;
299	}	363	}
300		364
301	#define PERL_MAGIC_coro PERL_MAGIC_ext	365	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		366	#define CORO_MAGIC_type_state PERL_MAGIC_ext
302		367
303	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	368	static MGVTBL coro_cv_vtbl = {
		369	0, 0, 0, 0,
		370	coro_cv_free
		371	};
304		372
305	#define CORO_MAGIC(cv) \	373	#define CORO_MAGIC(sv,type) \
306	SvMAGIC (cv) \	374	SvMAGIC (sv) \
307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	375	? SvMAGIC (sv)->mg_type == type \
308	? SvMAGIC (cv) \	376	? SvMAGIC (sv) \
309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	377	: mg_find (sv, type) \
310	: 0	378	: 0
		379
		380	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		381	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
311		382
312	static struct coro *	383	static struct coro *
313	SvSTATE_ (pTHX_ SV *coro)	384	SvSTATE_ (pTHX_ SV *coro)
314	{	385	{
315	HV *stash;	386	HV *stash;
316	MAGIC *mg;	387	MAGIC *mg;
317		388
318	if (SvROK (coro))	389	if (SvROK (coro))
319	coro = SvRV (coro);	390	coro = SvRV (coro);
320		391
321	if (SvTYPE (coro) != SVt_PVHV)	392	if (expect_false (SvTYPE (coro) != SVt_PVHV))
322	croak ("Coro::State object required");	393	croak ("Coro::State object required");
323		394
324	stash = SvSTASH (coro);	395	stash = SvSTASH (coro);
325	if (stash != coro_stash && stash != coro_state_stash)	396	if (expect_false (stash != coro_stash && stash != coro_state_stash))
326	{	397	{
327	/* very slow, but rare, check */	398	/* very slow, but rare, check */
328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	399	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329	croak ("Coro::State object required");	400	croak ("Coro::State object required");
330	}	401	}
331		402
332	mg = CORO_MAGIC (coro);	403	mg = CORO_MAGIC_state (coro);
333	return (struct coro *)mg->mg_ptr;	404	return (struct coro *)mg->mg_ptr;
334	}	405	}
335		406
336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	407	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
337		408
338	/* the next two functions merely cache the padlists */	409	/* the next two functions merely cache the padlists */
339	static void	410	static void
340	get_padlist (pTHX_ CV *cv)	411	get_padlist (pTHX_ CV *cv)
341	{	412	{
342	MAGIC *mg = CORO_MAGIC (cv);	413	MAGIC *mg = CORO_MAGIC_cv (cv);
343	AV *av;	414	AV *av;
344		415
345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	416	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	417	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
347	else	418	else
348	{	419	{
349	#if CORO_PREFER_PERL_FUNCTIONS	420	#if CORO_PREFER_PERL_FUNCTIONS
350	/* this is probably cleaner, but also slower? */	421	/* this is probably cleaner, but also slower? */
…		…
359	}	430	}
360		431
361	static void	432	static void
362	put_padlist (pTHX_ CV *cv)	433	put_padlist (pTHX_ CV *cv)
363	{	434	{
364	MAGIC *mg = CORO_MAGIC (cv);	435	MAGIC *mg = CORO_MAGIC_cv (cv);
365	AV *av;	436	AV *av;
366		437
367	if (!mg)	438	if (expect_false (!mg))
368	{	439	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		440
375	av = (AV *)mg->mg_obj;	441	av = (AV *)mg->mg_obj;
376		442
377	if (AvFILLp (av) >= AvMAX (av))	443	if (expect_false (AvFILLp (av) >= AvMAX (av)))
378	av_extend (av, AvMAX (av) + 1);	444	av_extend (av, AvMAX (av) + 1);
379		445
380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	446	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
381	}	447	}
382		448
383	/ load & save, init *****************************************************/	449	/ load & save, init *****************************************************/
384		450
385	static void	451	static void
386	load_perl (pTHX_ Coro__State c)	452	load_perl (pTHX_ Coro__State c)
387	{	453	{
		454	perl_slots *slot = c->slot;
		455	c->slot = 0;
		456
		457	PL_mainstack = c->mainstack;
		458
		459	GvSV (PL_defgv) = slot->defsv;
		460	GvAV (PL_defgv) = slot->defav;
		461	GvSV (PL_errgv) = slot->errsv;
		462	GvSV (irsgv) = slot->irsgv;
		463
388	#define VAR(name,type) PL_ ## name = c->name;	464	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	465	# include "state.h"
390	#undef VAR	466	#undef VAR
391
392	GvSV (PL_defgv) = c->defsv;
393	GvAV (PL_defgv) = c->defav;
394	GvSV (PL_errgv) = c->errsv;
395	GvSV (irsgv) = c->irssv_sv;
396		467
397	{	468	{
398	dSP;	469	dSP;
		470
399	CV *cv;	471	CV *cv;
400		472
401	/* now do the ugly restore mess */	473	/* now do the ugly restore mess */
402	while ((cv = (CV *)POPs))	474	while (expect_true (cv = (CV *)POPs))
403	{	475	{
404	put_padlist (aTHX_ cv); /* mark this padlist as available */	476	put_padlist (aTHX_ cv); /* mark this padlist as available */
405	CvDEPTH (cv) = PTR2IV (POPs);	477	CvDEPTH (cv) = PTR2IV (POPs);
406	CvPADLIST (cv) = (AV *)POPs;	478	CvPADLIST (cv) = (AV *)POPs;
407	}	479	}
…		…
426		498
427	XPUSHs (Nullsv);	499	XPUSHs (Nullsv);
428	/* this loop was inspired by pp_caller */	500	/* this loop was inspired by pp_caller */
429	for (;;)	501	for (;;)
430	{	502	{
431	while (cxix >= 0)	503	while (expect_true (cxix >= 0))
432	{	504	{
433	PERL_CONTEXT *cx = &ccstk[cxix--];	505	PERL_CONTEXT *cx = &ccstk[cxix--];
434		506
435	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)	507	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
436	{	508	{
437	CV *cv = cx->blk_sub.cv;	509	CV *cv = cx->blk_sub.cv;
438		510
439	if (CvDEPTH (cv))	511	if (expect_true (CvDEPTH (cv)))
440	{	512	{
441	EXTEND (SP, 3);	513	EXTEND (SP, 3);
442	PUSHs ((SV *)CvPADLIST (cv));	514	PUSHs ((SV *)CvPADLIST (cv));
443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	515	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
444	PUSHs ((SV *)cv);	516	PUSHs ((SV *)cv);
…		…
447	get_padlist (aTHX_ cv);	519	get_padlist (aTHX_ cv);
448	}	520	}
449	}	521	}
450	}	522	}
451		523
452	if (top_si->si_type == PERLSI_MAIN)	524	if (expect_true (top_si->si_type == PERLSI_MAIN))
453	break;	525	break;
454		526
455	top_si = top_si->si_prev;	527	top_si = top_si->si_prev;
456	ccstk = top_si->si_cxstack;	528	ccstk = top_si->si_cxstack;
457	cxix = top_si->si_cxix;	529	cxix = top_si->si_cxix;
458	}	530	}
459		531
460	PUTBACK;	532	PUTBACK;
461	}	533	}
462		534
		535	/* allocate some space on the context stack for our purposes */
		536	/* we manually unroll here, as usually 2 slots is enough */
		537	if (SLOT_COUNT >= 1) CXINC;
		538	if (SLOT_COUNT >= 2) CXINC;
		539	if (SLOT_COUNT >= 3) CXINC;
		540	{
		541	int i;
		542	for (i = 3; i < SLOT_COUNT; ++i)
		543	CXINC;
		544	}
		545	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		546
		547	c->mainstack = PL_mainstack;
		548
		549	{
		550	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		551
463	c->defav = GvAV (PL_defgv);	552	slot->defav = GvAV (PL_defgv);
464	c->defsv = DEFSV;	553	slot->defsv = DEFSV;
465	c->errsv = ERRSV;	554	slot->errsv = ERRSV;
466	c->irssv_sv = GvSV (irsgv);	555	slot->irsgv = GvSV (irsgv);
467		556
468	#define VAR(name,type)c->name = PL_ ## name;	557	#define VAR(name,type) slot->name = PL_ ## name;
469	# include "state.h"	558	# include "state.h"
470	#undef VAR	559	#undef VAR
		560	}
471	}	561	}
472		562
473	/*	563	/*
474	* allocate various perl stacks. This is an exact copy	564	* allocate various perl stacks. This is an exact copy
475	* of perl.c:init_stacks, except that it uses less memory	565	* of perl.c:init_stacks, except that it uses less memory
…		…
480	# define coro_init_stacks init_stacks	570	# define coro_init_stacks init_stacks
481	#else	571	#else
482	static void	572	static void
483	coro_init_stacks (pTHX)	573	coro_init_stacks (pTHX)
484	{	574	{
485	PL_curstackinfo = new_stackinfo(64, 6);	575	PL_curstackinfo = new_stackinfo(32, 8);
486	PL_curstackinfo->si_type = PERLSI_MAIN;	576	PL_curstackinfo->si_type = PERLSI_MAIN;
487	PL_curstack = PL_curstackinfo->si_stack;	577	PL_curstack = PL_curstackinfo->si_stack;
488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	578	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
489		579
490	PL_stack_base = AvARRAY(PL_curstack);	580	PL_stack_base = AvARRAY(PL_curstack);
491	PL_stack_sp = PL_stack_base;	581	PL_stack_sp = PL_stack_base;
492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	582	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
493		583
494	New(50,PL_tmps_stack,64,SV*);	584	New(50,PL_tmps_stack,32,SV*);
495	PL_tmps_floor = -1;	585	PL_tmps_floor = -1;
496	PL_tmps_ix = -1;	586	PL_tmps_ix = -1;
497	PL_tmps_max = 64;	587	PL_tmps_max = 32;
498		588
499	New(54,PL_markstack,16,I32);	589	New(54,PL_markstack,16,I32);
500	PL_markstack_ptr = PL_markstack;	590	PL_markstack_ptr = PL_markstack;
501	PL_markstack_max = PL_markstack + 16;	591	PL_markstack_max = PL_markstack + 16;
502		592
503	#ifdef SET_MARK_OFFSET	593	#ifdef SET_MARK_OFFSET
504	SET_MARK_OFFSET;	594	SET_MARK_OFFSET;
505	#endif	595	#endif
506		596
507	New(54,PL_scopestack,16,I32);	597	New(54,PL_scopestack,8,I32);
508	PL_scopestack_ix = 0;	598	PL_scopestack_ix = 0;
509	PL_scopestack_max = 16;	599	PL_scopestack_max = 8;
510		600
511	New(54,PL_savestack,64,ANY);	601	New(54,PL_savestack,24,ANY);
512	PL_savestack_ix = 0;	602	PL_savestack_ix = 0;
513	PL_savestack_max = 64;	603	PL_savestack_max = 24;
514		604
515	#if !PERL_VERSION_ATLEAST (5,9,0)	605	#if !PERL_VERSION_ATLEAST (5,10,0)
516	New(54,PL_retstack,4,OP*);	606	New(54,PL_retstack,4,OP*);
517	PL_retstack_ix = 0;	607	PL_retstack_ix = 0;
518	PL_retstack_max = 4;	608	PL_retstack_max = 4;
519	#endif	609	#endif
520	}	610	}
…		…
543		633
544	Safefree (PL_tmps_stack);	634	Safefree (PL_tmps_stack);
545	Safefree (PL_markstack);	635	Safefree (PL_markstack);
546	Safefree (PL_scopestack);	636	Safefree (PL_scopestack);
547	Safefree (PL_savestack);	637	Safefree (PL_savestack);
548	#if !PERL_VERSION_ATLEAST (5,9,0)	638	#if !PERL_VERSION_ATLEAST (5,10,0)
549	Safefree (PL_retstack);	639	Safefree (PL_retstack);
550	#endif	640	#endif
551	}	641	}
552		642
553	static size_t	643	static size_t
…		…
555	{	645	{
556	size_t rss = sizeof (*coro);	646	size_t rss = sizeof (*coro);
557		647
558	if (coro->mainstack)	648	if (coro->mainstack)
559	{	649	{
		650	perl_slots tmp_slot;
		651	perl_slots *slot;
		652
560	if (coro->flags & CF_RUNNING)	653	if (coro->flags & CF_RUNNING)
561	{	654	{
		655	slot = &tmp_slot;
		656
562	#define VAR(name,type)coro->name = PL_ ## name;	657	#define VAR(name,type) slot->name = PL_ ## name;
563	# include "state.h"	658	# include "state.h"
564	#undef VAR	659	#undef VAR
565	}	660	}
		661	else
		662	slot = coro->slot;
566		663
567	rss += sizeof (coro->curstackinfo);	664	rss += sizeof (slot->curstackinfo);
568	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	665	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
570	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	666	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
571	rss += coro->tmps_max * sizeof (SV *);	667	rss += slot->tmps_max * sizeof (SV *);
572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	668	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
573	rss += coro->scopestack_max * sizeof (I32);	669	rss += slot->scopestack_max * sizeof (I32);
574	rss += coro->savestack_max * sizeof (ANY);	670	rss += slot->savestack_max * sizeof (ANY);
575		671
576	#if !PERL_VERSION_ATLEAST (5,9,0)	672	#if !PERL_VERSION_ATLEAST (5,10,0)
577	rss += coro->retstack_max * sizeof (OP *);	673	rss += slot->retstack_max * sizeof (OP *);
578	#endif	674	#endif
579	}	675	}
580		676
581	return rss;	677	return rss;
582	}	678	}
583		679
584	/ coroutine stack handling **********************************************/	680	/ coroutine stack handling **********************************************/
		681
		682	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
		683	static int (orig_sigelem_set) (pTHX_ SV sv, MAGIC *mg);
		684
		685	/*
		686	* This overrides the default magic get method of %SIG elements.
		687	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		688	* and instead of tryign to save and restore the hash elements, we just provide
		689	* readback here.
		690	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		691	* not expecting this to actually change the hook. This is a potential problem
		692	* when a schedule happens then, but we ignore this.
		693	*/
		694	static int
		695	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
		696	{
		697	const char *s = MgPV_nolen_const (mg);
		698
		699	if (*s == '_')
		700	{
		701	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
		702	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
		703	}
		704
		705	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		706	}
		707
		708	static int
		709	coro_sigelem_set (pTHX_ SV sv, MAGIC mg)
		710	{
		711	const char *s = MgPV_nolen_const (mg);
		712
		713	if (*s == '_')
		714	{
		715	SV **svp = 0;
		716
		717	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		718	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		719
		720	if (svp)
		721	{
		722	SV old = svp;
		723	*svp = newSVsv (sv);
		724	SvREFCNT_dec (old);
		725	return 0;
		726	}
		727	}
		728
		729	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		730	}
585		731
586	static void	732	static void
587	coro_setup (pTHX_ struct coro *coro)	733	coro_setup (pTHX_ struct coro *coro)
588	{	734	{
589	/*	735	/*
…		…
594	PL_runops = RUNOPS_DEFAULT;	740	PL_runops = RUNOPS_DEFAULT;
595	PL_curcop = &PL_compiling;	741	PL_curcop = &PL_compiling;
596	PL_in_eval = EVAL_NULL;	742	PL_in_eval = EVAL_NULL;
597	PL_comppad = 0;	743	PL_comppad = 0;
598	PL_curpm = 0;	744	PL_curpm = 0;
		745	PL_curpad = 0;
599	PL_localizing = 0;	746	PL_localizing = 0;
600	PL_dirty = 0;	747	PL_dirty = 0;
601	PL_restartop = 0;	748	PL_restartop = 0;
		749	#if PERL_VERSION_ATLEAST (5,10,0)
		750	PL_parser = 0;
		751	#endif
		752
		753	/* recreate the die/warn hooks */
		754	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		755	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
602		756
603	GvSV (PL_defgv) = NEWSV (0, 0);	757	GvSV (PL_defgv) = newSV (0);
604	GvAV (PL_defgv) = coro->args; coro->args = 0;	758	GvAV (PL_defgv) = coro->args; coro->args = 0;
605	GvSV (PL_errgv) = NEWSV (0, 0);	759	GvSV (PL_errgv) = newSV (0);
606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	760	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
607	PL_rs = newSVsv (GvSV (irsgv));	761	PL_rs = newSVsv (GvSV (irsgv));
608		762	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
609	SvREFCNT_inc (PL_defoutgv);
610		763
611	{	764	{
612	dSP;	765	dSP;
613	LOGOP myop;	766	LOGOP myop;
614		767
615	Zero (&myop, 1, LOGOP);	768	Zero (&myop, 1, LOGOP);
616	myop.op_next = Nullop;	769	myop.op_next = Nullop;
617	myop.op_flags = OPf_WANT_VOID;	770	myop.op_flags = OPf_WANT_VOID;
618		771
619	PUSHMARK (SP);	772	PUSHMARK (SP);
620	XPUSHs (av_shift (GvAV (PL_defgv)));	773	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
621	PUTBACK;	774	PUTBACK;
622	PL_op = (OP *)&myop;	775	PL_op = (OP *)&myop;
623	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	776	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
624	SPAGAIN;	777	SPAGAIN;
625	}	778	}
626		779
627	ENTER; /* necessary e.g. for dounwind */	780	/* this newly created coroutine might be run on an existing cctx which most
		781	* likely was suspended in set_stacklevel, called from entersub.
		782	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		783	* so we ENTER here for symmetry
		784	*/
		785	ENTER;
628	}	786	}
629		787
630	static void	788	static void
631	coro_destroy (pTHX_ struct coro *coro)	789	coro_destroy (pTHX_ struct coro *coro)
632	{	790	{
…		…
652	SvREFCNT_dec (GvSV (PL_errgv));	810	SvREFCNT_dec (GvSV (PL_errgv));
653	SvREFCNT_dec (PL_defoutgv);	811	SvREFCNT_dec (PL_defoutgv);
654	SvREFCNT_dec (PL_rs);	812	SvREFCNT_dec (PL_rs);
655	SvREFCNT_dec (GvSV (irsgv));	813	SvREFCNT_dec (GvSV (irsgv));
656		814
		815	SvREFCNT_dec (PL_diehook);
		816	SvREFCNT_dec (PL_warnhook);
		817
657	SvREFCNT_dec (coro->saved_deffh);	818	SvREFCNT_dec (coro->saved_deffh);
658	//SvREFCNT_dec (coro->throw);	819	SvREFCNT_dec (coro->throw);
659		820
660	coro_destroy_stacks (aTHX);	821	coro_destroy_stacks (aTHX);
661	}	822	}
662		823
663	static void	824	static void
664	free_coro_mortal (pTHX)	825	free_coro_mortal (pTHX)
665	{	826	{
666	if (coro_mortal)	827	if (expect_true (coro_mortal))
667	{	828	{
668	SvREFCNT_dec (coro_mortal);	829	SvREFCNT_dec (coro_mortal);
669	coro_mortal = 0;	830	coro_mortal = 0;
670	}	831	}
671	}	832	}
…		…
700	bot = PL_stack_base + cx->blk_oldsp + 1;	861	bot = PL_stack_base + cx->blk_oldsp + 1;
701	top = cx->blk_gimme == G_ARRAY ? SP + 1	862	top = cx->blk_gimme == G_ARRAY ? SP + 1
702	: cx->blk_gimme == G_SCALAR ? bot + 1	863	: cx->blk_gimme == G_SCALAR ? bot + 1
703	: bot;	864	: bot;
704		865
		866	av_extend (av, top - bot);
705	while (bot < top)	867	while (bot < top)
706	av_push (av, SvREFCNT_inc (*bot++));	868	av_push (av, SvREFCNT_inc (*bot++));
707		869
708	PL_runops = RUNOPS_DEFAULT;	870	PL_runops = RUNOPS_DEFAULT;
709	ENTER;	871	ENTER;
…		…
749	SAVETMPS;	911	SAVETMPS;
750	EXTEND (SP, 3);	912	EXTEND (SP, 3);
751	PUSHMARK (SP);	913	PUSHMARK (SP);
752	PUSHs (&PL_sv_yes);	914	PUSHs (&PL_sv_yes);
753	PUSHs (fullname);	915	PUSHs (fullname);
754	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	916	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
755	PUTBACK;	917	PUTBACK;
756	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	918	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
757	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	919	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
758	SPAGAIN;	920	SPAGAIN;
759	FREETMPS;	921	FREETMPS;
…		…
795		957
796	/* inject a fake call to Coro::State::_cctx_init into the execution */	958	/* inject a fake call to Coro::State::_cctx_init into the execution */
797	/* _cctx_init should be careful, as it could be called at almost any time */	959	/* _cctx_init should be careful, as it could be called at almost any time */
798	/* during execution of a perl program */	960	/* during execution of a perl program */
799	static void NOINLINE	961	static void NOINLINE
800	prepare_cctx (pTHX_ coro_cctx *cctx)	962	cctx_prepare (pTHX_ coro_cctx *cctx)
801	{	963	{
802	dSP;	964	dSP;
803	LOGOP myop;	965	LOGOP myop;
804		966
805	PL_top_env = &PL_start_env;	967	PL_top_env = &PL_start_env;
…		…
823		985
824	/*	986	/*
825	* this is a _very_ stripped down perl interpreter ;)	987	* this is a _very_ stripped down perl interpreter ;)
826	*/	988	*/
827	static void	989	static void
828	coro_run (void *arg)	990	cctx_run (void *arg)
829	{	991	{
830	dTHX;	992	dTHX;
831		993
832	/* coro_run is the alternative tail of transfer(), so unlock here. */	994	/* cctx_run is the alternative tail of transfer(), so unlock here. */
833	UNLOCK;	995	UNLOCK;
834		996
835	/* we now skip the entersub that lead to transfer() */	997	/* we now skip the entersub that lead to transfer() */
836	PL_op = PL_op->op_next;	998	PL_op = PL_op->op_next;
837		999
838	/* inject a fake subroutine call to cctx_init */	1000	/* inject a fake subroutine call to cctx_init */
839	prepare_cctx (aTHX_ (coro_cctx *)arg);	1001	cctx_prepare (aTHX_ (coro_cctx *)arg);
840		1002
841	/* somebody or something will hit me for both perl_run and PL_restartop */	1003	/* somebody or something will hit me for both perl_run and PL_restartop */
842	PL_restartop = PL_op;	1004	PL_restartop = PL_op;
843	perl_run (PL_curinterp);	1005	perl_run (PL_curinterp);
844		1006
…		…
863	++cctx_count;	1025	++cctx_count;
864		1026
865	Newz (0, cctx, 1, coro_cctx);	1027	Newz (0, cctx, 1, coro_cctx);
866		1028
867	#if HAVE_MMAP	1029	#if HAVE_MMAP
868
869	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1030	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
870	/* mmap supposedly does allocate-on-write for us */	1031	/* mmap supposedly does allocate-on-write for us */
871	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	1032	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
872		1033
873	if (cctx->sptr != (void *)-1)	1034	if (cctx->sptr != (void *)-1)
…		…
894	stack_start = cctx->sptr;	1055	stack_start = cctx->sptr;
895	stack_size = cctx->ssize;	1056	stack_size = cctx->ssize;
896	}	1057	}
897		1058
898	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);	1059	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
899	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1060	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
900		1061
901	return cctx;	1062	return cctx;
902	}	1063	}
903		1064
904	static void	1065	static void
…		…
921	Safefree (cctx->sptr);	1082	Safefree (cctx->sptr);
922		1083
923	Safefree (cctx);	1084	Safefree (cctx);
924	}	1085	}
925		1086
		1087	/* wether this cctx should be destructed */
		1088	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1089
926	static coro_cctx *	1090	static coro_cctx *
927	cctx_get (pTHX)	1091	cctx_get (pTHX)
928	{	1092	{
929	while (cctx_first)	1093	while (expect_true (cctx_first))
930	{	1094	{
931	coro_cctx *cctx = cctx_first;	1095	coro_cctx *cctx = cctx_first;
932	cctx_first = cctx->next;	1096	cctx_first = cctx->next;
933	--cctx_idle;	1097	--cctx_idle;
934		1098
935	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1099	if (expect_true (!CCTX_EXPIRED (cctx)))
936	return cctx;	1100	return cctx;
937		1101
938	cctx_destroy (cctx);	1102	cctx_destroy (cctx);
939	}	1103	}
940		1104
…		…
943		1107
944	static void	1108	static void
945	cctx_put (coro_cctx *cctx)	1109	cctx_put (coro_cctx *cctx)
946	{	1110	{
947	/* free another cctx if overlimit */	1111	/* free another cctx if overlimit */
948	if (cctx_idle >= MAX_IDLE_CCTX)	1112	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
949	{	1113	{
950	coro_cctx *first = cctx_first;	1114	coro_cctx *first = cctx_first;
951	cctx_first = first->next;	1115	cctx_first = first->next;
952	--cctx_idle;	1116	--cctx_idle;
953		1117
…		…
959	cctx_first = cctx;	1123	cctx_first = cctx;
960	}	1124	}
961		1125
962	/ coroutine switching ***************************************************/	1126	/ coroutine switching ***************************************************/
963		1127
964	static void NOINLINE	1128	static void
965	transfer_check (pTHX_ struct coro prev, struct coro next)	1129	transfer_check (pTHX_ struct coro prev, struct coro next)
966	{	1130	{
967	if (prev != next)	1131	if (expect_true (prev != next))
968	{	1132	{
969	if (!(prev->flags & (CF_RUNNING \| CF_NEW)))	1133	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
970	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1134	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
971		1135
972	if (next->flags & CF_RUNNING)	1136	if (expect_false (next->flags & CF_RUNNING))
973	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1137	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
974		1138
975	if (next->flags & CF_DESTROYED)	1139	if (expect_false (next->flags & CF_DESTROYED))
976	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1140	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
977		1141
		1142	#if !PERL_VERSION_ATLEAST (5,10,0)
978	if (PL_lex_state != LEX_NOTPARSING)	1143	if (expect_false (PL_lex_state != LEX_NOTPARSING))
979	croak ("Coro::State::transfer called while parsing, but this is not supported");	1144	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1145	#endif
980	}	1146	}
981	}	1147	}
982		1148
983	/* always use the TRANSFER macro */	1149	/* always use the TRANSFER macro */
984	static void NOINLINE	1150	static void NOINLINE
985	transfer (pTHX_ struct coro prev, struct coro next)	1151	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
986	{	1152	{
987	dSTACKLEVEL;	1153	dSTACKLEVEL;
		1154	static volatile int has_throw;
988		1155
989	/* sometimes transfer is only called to set idle_sp */	1156	/* sometimes transfer is only called to set idle_sp */
990	if (!next)	1157	if (expect_false (!next))
991	{	1158	{
992	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1159	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
993	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1160	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
994	}	1161	}
995	else if (prev != next)	1162	else if (expect_true (prev != next))
996	{	1163	{
997	coro_cctx *prev__cctx;	1164	coro_cctx *prev__cctx;
998		1165
999	if (prev->flags & CF_NEW)	1166	if (expect_false (prev->flags & CF_NEW))
1000	{	1167	{
1001	/* create a new empty context */	1168	/* create a new empty context */
1002	Newz (0, prev->cctx, 1, coro_cctx);	1169	Newz (0, prev->cctx, 1, coro_cctx);
1003	prev->flags &= ~CF_NEW;	1170	prev->flags &= ~CF_NEW;
1004	prev->flags \|= CF_RUNNING;	1171	prev->flags \|= CF_RUNNING;
…		…
1007	prev->flags &= ~CF_RUNNING;	1174	prev->flags &= ~CF_RUNNING;
1008	next->flags \|= CF_RUNNING;	1175	next->flags \|= CF_RUNNING;
1009		1176
1010	LOCK;	1177	LOCK;
1011		1178
		1179	/* first get rid of the old state */
		1180	save_perl (aTHX_ prev);
		1181
1012	if (next->flags & CF_NEW)	1182	if (expect_false (next->flags & CF_NEW))
1013	{	1183	{
1014	/* need to start coroutine */	1184	/* need to start coroutine */
1015	next->flags &= ~CF_NEW;	1185	next->flags &= ~CF_NEW;
1016	/* first get rid of the old state */
1017	save_perl (aTHX_ prev);
1018	/* setup coroutine call */	1186	/* setup coroutine call */
1019	coro_setup (aTHX_ next);	1187	coro_setup (aTHX_ next);
1020	}	1188	}
1021	else	1189	else
1022	{
1023	/* coroutine already started */
1024	save_perl (aTHX_ prev);
1025	load_perl (aTHX_ next);	1190	load_perl (aTHX_ next);
1026	}
1027		1191
1028	prev__cctx = prev->cctx;	1192	prev__cctx = prev->cctx;
1029		1193
1030	/* possibly "free" the cctx */	1194	/* possibly "free" the cctx */
1031	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1195	if (expect_true (
		1196	prev__cctx->idle_sp == STACKLEVEL
		1197	&& !(prev__cctx->flags & CC_TRACE)
		1198	&& !force_cctx
		1199	))
1032	{	1200	{
1033	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1201	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1034	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1202	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1035		1203
1036	prev->cctx = 0;	1204	prev->cctx = 0;
1037		1205
		1206	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1207	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1208	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1209	if (!next->cctx)
		1210	next->cctx = cctx_get (aTHX);
		1211
1038	cctx_put (prev__cctx);	1212	cctx_put (prev__cctx);
1039	}	1213	}
1040		1214
1041	++next->usecount;	1215	++next->usecount;
1042		1216
1043	if (!next->cctx)	1217	if (expect_true (!next->cctx))
1044	next->cctx = cctx_get (aTHX);	1218	next->cctx = cctx_get (aTHX);
1045		1219
		1220	has_throw = !!next->throw;
		1221
1046	if (prev__cctx != next->cctx)	1222	if (expect_false (prev__cctx != next->cctx))
1047	{	1223	{
1048	prev__cctx->top_env = PL_top_env;	1224	prev__cctx->top_env = PL_top_env;
1049	PL_top_env = next->cctx->top_env;	1225	PL_top_env = next->cctx->top_env;
1050	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1226	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1051	}	1227	}
1052		1228
1053	free_coro_mortal (aTHX);	1229	free_coro_mortal (aTHX);
1054	UNLOCK;	1230	UNLOCK;
		1231
		1232	if (expect_false (has_throw))
		1233	{
		1234	struct coro *coro = SvSTATE (coro_current);
		1235
		1236	if (coro->throw)
		1237	{
		1238	SV *exception = coro->throw;
		1239	coro->throw = 0;
		1240	sv_setsv (ERRSV, exception);
		1241	croak (0);
		1242	}
		1243	}
1055	}	1244	}
1056	}	1245	}
1057		1246
1058	struct transfer_args	1247	struct transfer_args
1059	{	1248	{
1060	struct coro prev, next;	1249	struct coro prev, next;
1061	};	1250	};
1062		1251
1063	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1252	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1064	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1253	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1065		1254
1066	/ high level stuff ******************************************************/	1255	/ high level stuff ******************************************************/
1067		1256
1068	static int	1257	static int
…		…
1094	save_perl (aTHX_ &temp);	1283	save_perl (aTHX_ &temp);
1095	load_perl (aTHX_ coro);	1284	load_perl (aTHX_ coro);
1096		1285
1097	coro_destroy (aTHX_ coro);	1286	coro_destroy (aTHX_ coro);
1098		1287
1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1288	load_perl (aTHX_ &temp);
1100		1289
1101	coro->mainstack = 0;	1290	coro->slot = 0;
1102	}	1291	}
1103		1292
1104	cctx_destroy (coro->cctx);	1293	cctx_destroy (coro->cctx);
1105	SvREFCNT_dec (coro->args);	1294	SvREFCNT_dec (coro->args);
1106		1295
…		…
1162	{	1351	{
1163	dTHX;	1352	dTHX;
1164	struct transfer_args ta;	1353	struct transfer_args ta;
1165		1354
1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1355	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167	TRANSFER (ta);	1356	TRANSFER (ta, 1);
1168	}	1357	}
1169		1358
1170	/ Coro ******************************************************************/	1359	/ Coro ******************************************************************/
1171		1360
1172	static void	1361	static void
…		…
1174	{	1363	{
1175	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1364	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1176	}	1365	}
1177		1366
1178	static SV *	1367	static SV *
1179	coro_deq (pTHX_ int min_prio)	1368	coro_deq (pTHX)
1180	{	1369	{
1181	int prio = PRIO_MAX - PRIO_MIN;	1370	int prio;
1182		1371
1183	min_prio -= PRIO_MIN;
1184	if (min_prio < 0)
1185	min_prio = 0;
1186
1187	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1372	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1188	if (AvFILLp (coro_ready [prio]) >= 0)	1373	if (AvFILLp (coro_ready [prio]) >= 0)
1189	return av_shift (coro_ready [prio]);	1374	return av_shift (coro_ready [prio]);
1190		1375
1191	return 0;	1376	return 0;
1192	}	1377	}
…		…
1228	SV prev_sv, next_sv;	1413	SV prev_sv, next_sv;
1229		1414
1230	for (;;)	1415	for (;;)
1231	{	1416	{
1232	LOCK;	1417	LOCK;
1233	next_sv = coro_deq (aTHX_ PRIO_MIN);	1418	next_sv = coro_deq (aTHX);
1234		1419
1235	/* nothing to schedule: call the idle handler */	1420	/* nothing to schedule: call the idle handler */
1236	if (!next_sv)	1421	if (expect_false (!next_sv))
1237	{	1422	{
1238	dSP;	1423	dSP;
1239	UNLOCK;	1424	UNLOCK;
1240		1425
1241	ENTER;	1426	ENTER;
1242	SAVETMPS;	1427	SAVETMPS;
1243		1428
1244	PUSHMARK (SP);	1429	PUSHMARK (SP);
1245	PUTBACK;	1430	PUTBACK;
1246	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1431	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1432	SPAGAIN;
1247		1433
1248	FREETMPS;	1434	FREETMPS;
1249	LEAVE;	1435	LEAVE;
1250	continue;	1436	continue;
1251	}	1437	}
1252		1438
1253	ta->next = SvSTATE (next_sv);	1439	ta->next = SvSTATE (next_sv);
1254		1440
1255	/* cannot transfer to destroyed coros, skip and look for next */	1441	/* cannot transfer to destroyed coros, skip and look for next */
1256	if (ta->next->flags & CF_DESTROYED)	1442	if (expect_false (ta->next->flags & CF_DESTROYED))
1257	{	1443	{
1258	UNLOCK;	1444	UNLOCK;
1259	SvREFCNT_dec (next_sv);	1445	SvREFCNT_dec (next_sv);
1260	/* coro_nready is already taken care of by destroy */	1446	/* coro_nready is already taken care of by destroy */
1261	continue;	1447	continue;
…		…
1306	{	1492	{
1307	dTHX;	1493	dTHX;
1308	struct transfer_args ta;	1494	struct transfer_args ta;
1309		1495
1310	prepare_schedule (aTHX_ &ta);	1496	prepare_schedule (aTHX_ &ta);
1311	TRANSFER (ta);	1497	TRANSFER (ta, 1);
1312	}	1498	}
1313		1499
1314	static int	1500	static int
1315	api_cede (void)	1501	api_cede (void)
1316	{	1502	{
1317	dTHX;	1503	dTHX;
1318	struct transfer_args ta;	1504	struct transfer_args ta;
1319		1505
1320	prepare_cede (aTHX_ &ta);	1506	prepare_cede (aTHX_ &ta);
1321		1507
1322	if (ta.prev != ta.next)	1508	if (expect_true (ta.prev != ta.next))
1323	{	1509	{
1324	TRANSFER (ta);	1510	TRANSFER (ta, 1);
1325	return 1;	1511	return 1;
1326	}	1512	}
1327	else	1513	else
1328	return 0;	1514	return 0;
1329	}	1515	}
…		…
1334	dTHX;	1520	dTHX;
1335	struct transfer_args ta;	1521	struct transfer_args ta;
1336		1522
1337	if (prepare_cede_notself (aTHX_ &ta))	1523	if (prepare_cede_notself (aTHX_ &ta))
1338	{	1524	{
1339	TRANSFER (ta);	1525	TRANSFER (ta, 1);
1340	return 1;	1526	return 1;
1341	}	1527	}
1342	else	1528	else
1343	return 0;	1529	return 0;
1344	}	1530	}
…		…
1363	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);	1549	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
1364		1550
1365	if (coro->flags & CF_RUNNING)	1551	if (coro->flags & CF_RUNNING)
1366	PL_runops = RUNOPS_DEFAULT;	1552	PL_runops = RUNOPS_DEFAULT;
1367	else	1553	else
1368	coro->runops = RUNOPS_DEFAULT;	1554	coro->slot->runops = RUNOPS_DEFAULT;
1369	}	1555	}
1370	}	1556	}
1371		1557
1372	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1558	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1373		1559
…		…
1378	#ifdef USE_ITHREADS	1564	#ifdef USE_ITHREADS
1379	MUTEX_INIT (&coro_mutex);	1565	MUTEX_INIT (&coro_mutex);
1380	#endif	1566	#endif
1381	BOOT_PAGESIZE;	1567	BOOT_PAGESIZE;
1382		1568
1383	irsgv = gv_fetchpv ("/", 1, SVt_PV);	1569	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1570	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1571
		1572	orig_sigelem_get = PL_vtbl_sigelem.svt_get;
		1573	PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1574	orig_sigelem_set = PL_vtbl_sigelem.svt_set;
		1575	PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1576
		1577	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1578	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1579	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1384		1580
1385	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1581	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1386		1582
1387	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1583	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1388	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1584	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1394		1590
1395	while (main_top_env->je_prev)	1591	while (main_top_env->je_prev)
1396	main_top_env = main_top_env->je_prev;	1592	main_top_env = main_top_env->je_prev;
1397		1593
1398	coroapi.ver = CORO_API_VERSION;	1594	coroapi.ver = CORO_API_VERSION;
		1595	coroapi.rev = CORO_API_REVISION;
1399	coroapi.transfer = api_transfer;	1596	coroapi.transfer = api_transfer;
1400		1597
1401	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1598	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1402	}	1599	}
1403		1600
1404	SV *	1601	SV *
1405	new (char *klass, ...)	1602	new (char *klass, ...)
1406	CODE:	1603	CODE:
1407	{	1604	{
1408	struct coro *coro;	1605	struct coro *coro;
		1606	MAGIC *mg;
1409	HV *hv;	1607	HV *hv;
1410	int i;	1608	int i;
1411		1609
1412	Newz (0, coro, 1, struct coro);	1610	Newz (0, coro, 1, struct coro);
1413	coro->args = newAV ();	1611	coro->args = newAV ();
…		…
1416	if (coro_first) coro_first->prev = coro;	1614	if (coro_first) coro_first->prev = coro;
1417	coro->next = coro_first;	1615	coro->next = coro_first;
1418	coro_first = coro;	1616	coro_first = coro;
1419		1617
1420	coro->hv = hv = newHV ();	1618	coro->hv = hv = newHV ();
1421	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1619	mg = sv_magicext ((SV )hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )coro, 0);
		1620	mg->mg_flags \|= MGf_DUP;
1422	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1621	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1423		1622
		1623	av_extend (coro->args, items - 1);
1424	for (i = 1; i < items; i++)	1624	for (i = 1; i < items; i++)
1425	av_push (coro->args, newSVsv (ST (i)));	1625	av_push (coro->args, newSVsv (ST (i)));
1426	}	1626	}
1427	OUTPUT:	1627	OUTPUT:
1428	RETVAL	1628	RETVAL
…		…
1439	Coro::cede_notself = 4	1639	Coro::cede_notself = 4
1440	CODE:	1640	CODE:
1441	{	1641	{
1442	struct transfer_args ta;	1642	struct transfer_args ta;
1443		1643
		1644	PUTBACK;
1444	switch (ix)	1645	switch (ix)
1445	{	1646	{
1446	case 0:	1647	case 0:
1447	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1648	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1448	ta.next = 0;	1649	ta.next = 0;
…		…
1467	if (!prepare_cede_notself (aTHX_ &ta))	1668	if (!prepare_cede_notself (aTHX_ &ta))
1468	XSRETURN_EMPTY;	1669	XSRETURN_EMPTY;
1469		1670
1470	break;	1671	break;
1471	}	1672	}
		1673	SPAGAIN;
1472		1674
1473	BARRIER;	1675	BARRIER;
		1676	PUTBACK;
1474	TRANSFER (ta);	1677	TRANSFER (ta, 0);
1475		1678	SPAGAIN; /* might be the sp of a different coroutine now */
1476	if (GIMME_V != G_VOID && ta.next != ta.prev)	1679	/* be extra careful not to ever do anything after TRANSFER */
1477	XSRETURN_YES;
1478	}	1680	}
1479		1681
1480	bool	1682	bool
1481	_destroy (SV *coro_sv)	1683	_destroy (SV *coro_sv)
1482	CODE:	1684	CODE:
…		…
1531	CODE:	1733	CODE:
1532	{	1734	{
1533	if (coro->mainstack)	1735	if (coro->mainstack)
1534	{	1736	{
1535	struct coro temp;	1737	struct coro temp;
1536	Zero (&temp, 1, struct coro);
1537		1738
1538	if (!(coro->flags & CF_RUNNING))	1739	if (!(coro->flags & CF_RUNNING))
1539	{	1740	{
		1741	PUTBACK;
1540	save_perl (aTHX_ &temp);	1742	save_perl (aTHX_ &temp);
1541	load_perl (aTHX_ coro);	1743	load_perl (aTHX_ coro);
1542	}	1744	}
1543		1745
1544	{	1746	{
1545	dSP;	1747	dSP;
1546	ENTER;	1748	ENTER;
1547	SAVETMPS;	1749	SAVETMPS;
		1750	PUTBACK;
		1751	PUSHSTACK;
1548	PUSHMARK (SP);	1752	PUSHMARK (SP);
1549	PUTBACK;	1753
1550	if (ix)	1754	if (ix)
1551	eval_sv (coderef, 0);	1755	eval_sv (coderef, 0);
1552	else	1756	else
1553	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	1757	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1758
		1759	POPSTACK;
1554	SPAGAIN;	1760	SPAGAIN;
1555	FREETMPS;	1761	FREETMPS;
1556	LEAVE;	1762	LEAVE;
1557	PUTBACK;	1763	PUTBACK;
1558	}	1764	}
1559		1765
1560	if (!(coro->flags & CF_RUNNING))	1766	if (!(coro->flags & CF_RUNNING))
1561	{	1767	{
1562	save_perl (aTHX_ coro);	1768	save_perl (aTHX_ coro);
1563	load_perl (aTHX_ &temp);	1769	load_perl (aTHX_ &temp);
		1770	SPAGAIN;
1564	}	1771	}
1565	}	1772	}
1566	}	1773	}
1567		1774
1568	SV *	1775	SV *
…		…
1609	case 1: RETVAL = coro->usecount; break;	1816	case 1: RETVAL = coro->usecount; break;
1610	}	1817	}
1611	OUTPUT:	1818	OUTPUT:
1612	RETVAL	1819	RETVAL
1613		1820
		1821	void
		1822	force_cctx ()
		1823	CODE:
		1824	struct coro *coro = SvSTATE (coro_current);
		1825	coro->cctx->idle_sp = 0;
1614		1826
1615	MODULE = Coro::State PACKAGE = Coro	1827	MODULE = Coro::State PACKAGE = Coro
1616		1828
1617	BOOT:	1829	BOOT:
1618	{	1830	{
1619	int i;	1831	int i;
1620		1832
1621	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);	1833	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1622	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);	1834	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1623	av_async_pool = get_av ("Coro::async_pool", TRUE);	1835	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1624		1836
1625	coro_current = get_sv ("Coro::current", FALSE);	1837	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1626	SvREADONLY_on (coro_current);	1838	SvREADONLY_on (coro_current);
1627		1839
1628	coro_stash = gv_stashpv ("Coro", TRUE);	1840	coro_stash = gv_stashpv ("Coro", TRUE);
1629		1841
1630	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1842	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1631	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1843	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1632	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1844	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1633	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1845	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1636		1848
1637	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1849	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1638	coro_ready[i] = newAV ();	1850	coro_ready[i] = newAV ();
1639		1851
1640	{	1852	{
1641	SV *sv = perl_get_sv("Coro::API", 1);	1853	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1854	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1642		1855
1643	coroapi.schedule = api_schedule;	1856	coroapi.schedule = api_schedule;
1644	coroapi.cede = api_cede;	1857	coroapi.cede = api_cede;
1645	coroapi.cede_notself = api_cede_notself;	1858	coroapi.cede_notself = api_cede_notself;
1646	coroapi.ready = api_ready;	1859	coroapi.ready = api_ready;
…		…
1697	CODE:	1910	CODE:
1698	RETVAL = coro_nready;	1911	RETVAL = coro_nready;
1699	OUTPUT:	1912	OUTPUT:
1700	RETVAL	1913	RETVAL
1701		1914
		1915	void
		1916	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1917	PROTOTYPE: $;$
		1918	CODE:
		1919	SvREFCNT_dec (self->throw);
		1920	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1921
		1922	void
		1923	swap_defsv (Coro::State self)
		1924	PROTOTYPE: $
		1925	ALIAS:
		1926	swap_defav = 1
		1927	CODE:
		1928	if (!self->slot)
		1929	croak ("cannot swap state with coroutine that has no saved state");
		1930	else
		1931	{
		1932	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1933	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
		1934
		1935	SV tmp = src; src = dst; *dst = tmp;
		1936	}
		1937
1702	# for async_pool speedup	1938	# for async_pool speedup
1703	void	1939	void
1704	_pool_1 (SV *cb)	1940	_pool_1 (SV *cb)
1705	CODE:	1941	CODE:
1706	{	1942	{
…		…
1710	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	1946	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1711	AV *invoke_av;	1947	AV *invoke_av;
1712	int i, len;	1948	int i, len;
1713		1949
1714	if (!invoke)	1950	if (!invoke)
		1951	{
		1952	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1715	croak ("\3terminate\2\n");	1953	croak ("\3async_pool terminate\2\n");
		1954	}
1716		1955
1717	SvREFCNT_dec (coro->saved_deffh);	1956	SvREFCNT_dec (coro->saved_deffh);
1718	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	1957	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1719		1958
1720	hv_store (hv, "desc", sizeof ("desc") - 1,	1959	hv_store (hv, "desc", sizeof ("desc") - 1,
…		…
1746	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	1985	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
1747	coro->saved_deffh = 0;	1986	coro->saved_deffh = 0;
1748		1987
1749	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	1988	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1750	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	1989	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1990	{
		1991	SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1751	croak ("\3terminate\2\n");	1992	croak ("\3async_pool terminate\2\n");
		1993	}
1752		1994
1753	av_clear (GvAV (PL_defgv));	1995	av_clear (GvAV (PL_defgv));
1754	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	1996	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1755	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	1997	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1756		1998

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Comparing Coro/Coro/State.xs (file contents): Revision 1.187 by root, Fri Oct 5 20:31:18 2007 UTC vs. Revision 1.231 by root, Thu Apr 24 10:31:59 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.187 by root, Fri Oct 5 20:31:18 2007 UTC vs.
Revision 1.231 by root, Thu Apr 24 10:31:59 2008 UTC