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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.47 by pcg, Sat Nov 15 03:53:10 2003 UTC vs.
Revision 1.72 by root, Wed Feb 1 23:59:41 2006 UTC

…		…
		1	#define PERL_NO_GET_CONTEXT
		2
		3	#include "libcoro/coro.c"
		4
1	#include "EXTERN.h"	5	#include "EXTERN.h"
2	#include "perl.h"	6	#include "perl.h"
3	#include "XSUB.h"	7	#include "XSUB.h"
4		8
5	#include "patchlevel.h"	9	#include "patchlevel.h"
6		10
7	#if PATCHLEVEL < 6	11	#if PERL_VERSION < 6
8	# ifndef PL_ppaddr	12	# ifndef PL_ppaddr
9	# define PL_ppaddr ppaddr	13	# define PL_ppaddr ppaddr
10	# endif	14	# endif
11	# ifndef call_sv	15	# ifndef call_sv
12	# define call_sv perl_call_sv	16	# define call_sv perl_call_sv
23	# ifndef IS_PADCONST	27	# ifndef IS_PADCONST
24	# define IS_PADCONST(v) 0	28	# define IS_PADCONST(v) 0
25	# endif	29	# endif
26	#endif	30	#endif
27		31
28	#include "libcoro/coro.c"	32	#include <errno.h>
29
30	#include <signal.h>	33	#include <signal.h>
31		34
32	#ifdef HAVE_MMAP	35	#ifdef HAVE_MMAP
33	# include <unistd.h>	36	# include <unistd.h>
34	# include <sys/mman.h>	37	# include <sys/mman.h>
…		…
39	# undef HAVE_MMAP	42	# undef HAVE_MMAP
40	# endif	43	# endif
41	# endif	44	# endif
42	#endif	45	#endif
43		46
44	#define MAY_FLUSH /* increases codesize and is rarely used */
45
46	#define SUB_INIT "Coro::State::initialize"	47	#define SUB_INIT "Coro::State::initialize"
47	#define UCORO_STATE "_coro_state"	48	#define UCORO_STATE "_coro_state"
48		49
49	/* The next macro should declare a variable stacklevel that contains and approximation	50	/* The next macro should declare a variable stacklevel that contains and approximation
50	* to the current C stack pointer. Its property is that it changes with each call	51	* to the current C stack pointer. Its property is that it changes with each call
…		…
55		56
56	#define labs(l) ((l) >= 0 ? (l) : -(l))	57	#define labs(l) ((l) >= 0 ? (l) : -(l))
57		58
58	#include "CoroAPI.h"	59	#include "CoroAPI.h"
59		60
		61	#ifdef USE_ITHREADS
		62	static perl_mutex coro_mutex;
		63	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
		64	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
		65	#else
		66	# define LOCK (void)0
		67	# define UNLOCK (void)0
		68	#endif
		69
60	static struct CoroAPI coroapi;	70	static struct CoroAPI coroapi;
		71	static AV main_mainstack; / used to differentiate between $main and others */
		72	static HV *coro_state_stash;
		73	static SV *ucoro_state_sv;
		74	static U32 ucoro_state_hash;
		75	static SV coro_mortal; / will be freed after next transfer */
61		76
62	/* this is actually not only the c stack but also c registers etc... */	77	/* this is actually not only the c stack but also c registers etc... */
63	typedef struct {	78	typedef struct {
64	int refcnt; /* pointer reference counter */	79	int refcnt; /* pointer reference counter */
65	int usecnt; /* shared by how many coroutines */	80	int usecnt; /* shared by how many coroutines */
…		…
95	AV *mainstack;	110	AV *mainstack;
96	SV **stack_sp;	111	SV **stack_sp;
97	OP *op;	112	OP *op;
98	SV **curpad;	113	SV **curpad;
99	AV *comppad;	114	AV *comppad;
		115	CV *compcv;
100	SV **stack_base;	116	SV **stack_base;
101	SV **stack_max;	117	SV **stack_max;
102	SV **tmps_stack;	118	SV **tmps_stack;
103	I32 tmps_floor;	119	I32 tmps_floor;
104	I32 tmps_ix;	120	I32 tmps_ix;
…		…
113	I32 savestack_ix;	129	I32 savestack_ix;
114	I32 savestack_max;	130	I32 savestack_max;
115	OP **retstack;	131	OP **retstack;
116	I32 retstack_ix;	132	I32 retstack_ix;
117	I32 retstack_max;	133	I32 retstack_max;
		134	PMOP *curpm;
118	COP *curcop;	135	COP *curcop;
119	JMPENV *top_env;	136	JMPENV *top_env;
120		137
121	/* data associated with this coroutine (initial args) */	138	/* data associated with this coroutine (initial args) */
122	AV *args;	139	AV *args;
123	};	140	};
124		141
125	typedef struct coro *Coro__State;	142	typedef struct coro *Coro__State;
126	typedef struct coro *Coro__State_or_hashref;	143	typedef struct coro *Coro__State_or_hashref;
127		144
128	static AV main_mainstack; / used to differentiate between $main and others */
129	static HV *coro_state_stash;
130	static SV *ucoro_state_sv;
131	static U32 ucoro_state_hash;
132	static HV *padlist_cache;
133	static SV coro_mortal; / will be freed after next transfer */
134
135	/* mostly copied from op.c:cv_clone2 */	145	/* mostly copied from op.c:cv_clone2 */
136	STATIC AV *	146	STATIC AV *
137	clone_padlist (AV *protopadlist)	147	clone_padlist (pTHX_ AV *protopadlist)
138	{	148	{
139	AV *av;	149	AV *av;
140	I32 ix;	150	I32 ix;
141	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);	151	AV protopad_name = (AV ) * av_fetch (protopadlist, 0, FALSE);
142	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);	152	AV protopad = (AV ) * av_fetch (protopadlist, 1, FALSE);
…		…
161	av_store (newpadlist, 1, (SV *) newpad);	171	av_store (newpadlist, 1, (SV *) newpad);
162		172
163	av = newAV (); /* will be @_ */	173	av = newAV (); /* will be @_ */
164	av_extend (av, 0);	174	av_extend (av, 0);
165	av_store (newpad, 0, (SV *) av);	175	av_store (newpad, 0, (SV *) av);
166	AvFLAGS (av) = AVf_REIFY;	176	AvREIFY_on (av);
167		177
168	for (ix = fpad; ix > 0; ix--)	178	for (ix = fpad; ix > 0; ix--)
169	{	179	{
170	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;	180	SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
		181
171	if (namesv && namesv != &PL_sv_undef)	182	if (namesv && namesv != &PL_sv_undef)
172	{	183	{
173	char name = SvPVX (namesv); / XXX */	184	char name = SvPVX (namesv); / XXX */
		185
174	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')	186	if (SvFLAGS (namesv) & SVf_FAKE \|\| *name == '&')
175	{ /* lexical from outside? */	187	{ /* lexical from outside? */
176	npad[ix] = SvREFCNT_inc (ppad[ix]);	188	npad[ix] = SvREFCNT_inc (ppad[ix]);
177	}	189	}
178	else	190	else
…		…
184	sv = (SV *) newAV ();	196	sv = (SV *) newAV ();
185	else if (*name == '%')	197	else if (*name == '%')
186	sv = (SV *) newHV ();	198	sv = (SV *) newHV ();
187	else	199	else
188	sv = NEWSV (0, 0);	200	sv = NEWSV (0, 0);
		201
		202	#ifdef SvPADBUSY
189	if (!SvPADBUSY (sv))	203	if (!SvPADBUSY (sv))
		204	#endif
190	SvPADMY_on (sv);	205	SvPADMY_on (sv);
		206
191	npad[ix] = sv;	207	npad[ix] = sv;
192	}	208	}
193	}	209	}
194	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))	210	else if (IS_PADGV (ppad[ix]) \|\| IS_PADCONST (ppad[ix]))
195	{	211	{
…		…
224	#endif	240	#endif
225		241
226	return newpadlist;	242	return newpadlist;
227	}	243	}
228		244
229	#ifdef MAY_FLUSH
230	STATIC void	245	STATIC void
231	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
232	{	247	{
233	/* may be during global destruction */	248	/* may be during global destruction */
234	if (SvREFCNT(padlist))	249	if (SvREFCNT (padlist))
235	{	250	{
236	I32 i = AvFILLp(padlist);	251	I32 i = AvFILLp (padlist);
237	while (i >= 0)	252	while (i >= 0)
238	{	253	{
239	SV **svp = av_fetch(padlist, i--, FALSE);	254	SV **svp = av_fetch (padlist, i--, FALSE);
240	SV sv = svp ? svp : Nullsv;
241	if (sv)	255	if (svp)
		256	{
		257	SV *sv;
		258	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))
242	SvREFCNT_dec(sv);	259	SvREFCNT_dec (sv);
		260
		261	SvREFCNT_dec (*svp);
		262	}
243	}	263	}
244		264
245	SvREFCNT_dec((SV*)padlist);	265	SvREFCNT_dec ((SV*)padlist);
246	}	266	}
247	}	267	}
248	#endif	268
		269	STATIC int
		270	coro_cv_free (pTHX_ SV sv, MAGIC mg)
		271	{
		272	AV *padlist;
		273	AV av = (AV )mg->mg_obj;
		274
		275	/* casting is fun. */
		276	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
		277	free_padlist (aTHX_ padlist);
		278
		279	SvREFCNT_dec (av);
		280	}
		281
		282	#define PERL_MAGIC_coro PERL_MAGIC_ext
		283
		284	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
249		285
250	/* the next two functions merely cache the padlists */	286	/* the next two functions merely cache the padlists */
251	STATIC void	287	STATIC void
252	get_padlist (CV *cv)	288	get_padlist (pTHX_ CV *cv)
253	{	289	{
254	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 0);	290	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
255		291
256	if (he && AvFILLp ((AV )he) >= 0)	292	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
257	CvPADLIST (cv) = (AV )av_pop ((AV )*he);	293	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);
258	else	294	else
259	CvPADLIST (cv) = clone_padlist (CvPADLIST (cv));	295	CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
260	}	296	}
261		297
262	STATIC void	298	STATIC void
263	put_padlist (CV *cv)	299	put_padlist (pTHX_ CV *cv)
264	{	300	{
265	SV *he = hv_fetch (padlist_cache, (void )&cv, sizeof (CV *), 1);	301	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);
266		302
267	if (SvTYPE (*he) != SVt_PVAV)	303	if (!mg)
268	{	304	{
269	SvREFCNT_dec (*he);	305	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
		306	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
		307	mg->mg_virtual = &vtbl_coro;
270	he = (SV )newAV ();	308	mg->mg_obj = (SV *)newAV ();
271	}	309	}
272		310
273	av_push ((AV )he, (SV *)CvPADLIST (cv));	311	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));
274	}	312	}
275
276	#ifdef MAY_FLUSH
277	STATIC void
278	flush_padlist_cache ()
279	{
280	HV *hv = padlist_cache;
281	padlist_cache = newHV ();
282
283	if (hv_iterinit (hv))
284	{
285	HE *he;
286	AV *padlist;
287
288	while (!!(he = hv_iternext (hv)))
289	{
290	AV av = (AV )HeVAL(he);
291
292	/* casting is fun. */
293	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
294	free_padlist (padlist);
295	}
296	}
297
298	SvREFCNT_dec (hv);
299	}
300	#endif
301		313
302	#define SB do {	314	#define SB do {
303	#define SE } while (0)	315	#define SE } while (0)
304		316
305	#define LOAD(state) load_state(aTHX_ (state));	317	#define LOAD(state) load_state(aTHX_ (state));
…		…
318	PL_mainstack = c->mainstack;	330	PL_mainstack = c->mainstack;
319	PL_stack_sp = c->stack_sp;	331	PL_stack_sp = c->stack_sp;
320	PL_op = c->op;	332	PL_op = c->op;
321	PL_curpad = c->curpad;	333	PL_curpad = c->curpad;
322	PL_comppad = c->comppad;	334	PL_comppad = c->comppad;
		335	PL_compcv = c->compcv;
323	PL_stack_base = c->stack_base;	336	PL_stack_base = c->stack_base;
324	PL_stack_max = c->stack_max;	337	PL_stack_max = c->stack_max;
325	PL_tmps_stack = c->tmps_stack;	338	PL_tmps_stack = c->tmps_stack;
326	PL_tmps_floor = c->tmps_floor;	339	PL_tmps_floor = c->tmps_floor;
327	PL_tmps_ix = c->tmps_ix;	340	PL_tmps_ix = c->tmps_ix;
…		…
333	PL_scopestack_ix = c->scopestack_ix;	346	PL_scopestack_ix = c->scopestack_ix;
334	PL_scopestack_max = c->scopestack_max;	347	PL_scopestack_max = c->scopestack_max;
335	PL_savestack = c->savestack;	348	PL_savestack = c->savestack;
336	PL_savestack_ix = c->savestack_ix;	349	PL_savestack_ix = c->savestack_ix;
337	PL_savestack_max = c->savestack_max;	350	PL_savestack_max = c->savestack_max;
		351	#if PERL_VERSION < 9
338	PL_retstack = c->retstack;	352	PL_retstack = c->retstack;
339	PL_retstack_ix = c->retstack_ix;	353	PL_retstack_ix = c->retstack_ix;
340	PL_retstack_max = c->retstack_max;	354	PL_retstack_max = c->retstack_max;
		355	#endif
		356	PL_curpm = c->curpm;
341	PL_curcop = c->curcop;	357	PL_curcop = c->curcop;
342	PL_top_env = c->top_env;	358	PL_top_env = c->top_env;
343		359
344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
…		…
354	{	370	{
355	AV padlist = (AV )POPs;	371	AV padlist = (AV )POPs;
356		372
357	if (padlist)	373	if (padlist)
358	{	374	{
359	put_padlist (cv); /* mark this padlist as available */	375	put_padlist (aTHX_ cv); /* mark this padlist as available */
360	CvPADLIST(cv) = padlist;	376	CvPADLIST(cv) = padlist;
361	#ifdef USE_THREADS
362	/CvOWNER(cv) = (struct perl_thread )POPs;*/
363	#endif
364	}	377	}
365		378
366	++CvDEPTH(cv);	379	++CvDEPTH(cv);
367	}	380	}
368		381
…		…
395	if (CxTYPE(cx) == CXt_SUB)	408	if (CxTYPE(cx) == CXt_SUB)
396	{	409	{
397	CV *cv = cx->blk_sub.cv;	410	CV *cv = cx->blk_sub.cv;
398	if (CvDEPTH(cv))	411	if (CvDEPTH(cv))
399	{	412	{
400	#ifdef USE_THREADS
401	/XPUSHs ((SV )CvOWNER(cv));*/
402	/CvOWNER(cv) = 0;/
403	/error must unlock this cv etc.. etc.../
404	#endif
405	EXTEND (SP, CvDEPTH(cv)*2);	413	EXTEND (SP, CvDEPTH(cv)*2);
406		414
407	while (--CvDEPTH(cv))	415	while (--CvDEPTH(cv))
408	{	416	{
409	/* this tells the restore code to increment CvDEPTH */	417	/* this tells the restore code to increment CvDEPTH */
…		…
412	}	420	}
413		421
414	PUSHs ((SV *)CvPADLIST(cv));	422	PUSHs ((SV *)CvPADLIST(cv));
415	PUSHs ((SV *)cv);	423	PUSHs ((SV *)cv);
416		424
417	get_padlist (cv); /* this is a monster */	425	get_padlist (aTHX_ cv); /* this is a monster */
418	}	426	}
419	}	427	}
420	#ifdef CXt_FORMAT	428	#ifdef CXt_FORMAT
421	else if (CxTYPE(cx) == CXt_FORMAT)	429	else if (CxTYPE(cx) == CXt_FORMAT)
422	{	430	{
…		…
450	c->mainstack = PL_mainstack;	458	c->mainstack = PL_mainstack;
451	c->stack_sp = PL_stack_sp;	459	c->stack_sp = PL_stack_sp;
452	c->op = PL_op;	460	c->op = PL_op;
453	c->curpad = PL_curpad;	461	c->curpad = PL_curpad;
454	c->comppad = PL_comppad;	462	c->comppad = PL_comppad;
		463	c->compcv = PL_compcv;
455	c->stack_base = PL_stack_base;	464	c->stack_base = PL_stack_base;
456	c->stack_max = PL_stack_max;	465	c->stack_max = PL_stack_max;
457	c->tmps_stack = PL_tmps_stack;	466	c->tmps_stack = PL_tmps_stack;
458	c->tmps_floor = PL_tmps_floor;	467	c->tmps_floor = PL_tmps_floor;
459	c->tmps_ix = PL_tmps_ix;	468	c->tmps_ix = PL_tmps_ix;
…		…
465	c->scopestack_ix = PL_scopestack_ix;	474	c->scopestack_ix = PL_scopestack_ix;
466	c->scopestack_max = PL_scopestack_max;	475	c->scopestack_max = PL_scopestack_max;
467	c->savestack = PL_savestack;	476	c->savestack = PL_savestack;
468	c->savestack_ix = PL_savestack_ix;	477	c->savestack_ix = PL_savestack_ix;
469	c->savestack_max = PL_savestack_max;	478	c->savestack_max = PL_savestack_max;
		479	#if PERL_VERSION < 9
470	c->retstack = PL_retstack;	480	c->retstack = PL_retstack;
471	c->retstack_ix = PL_retstack_ix;	481	c->retstack_ix = PL_retstack_ix;
472	c->retstack_max = PL_retstack_max;	482	c->retstack_max = PL_retstack_max;
		483	#endif
		484	c->curpm = PL_curpm;
473	c->curcop = PL_curcop;	485	c->curcop = PL_curcop;
474	c->top_env = PL_top_env;	486	c->top_env = PL_top_env;
475	}	487	}
476		488
477	/*	489	/*
478	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
479	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
480	* on the assumption that coroutines do not usually need	492	* on the (sometimes correct) assumption that coroutines do
481	* a lot of stackspace.	493	* not usually need a lot of stackspace.
482	*/	494	*/
483	STATIC void	495	STATIC void
484	coro_init_stacks (pTHX)	496	coro_init_stacks (pTHX)
485	{	497	{
		498	LOCK;
		499
486	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	500	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
487	PL_curstackinfo->si_type = PERLSI_MAIN;	501	PL_curstackinfo->si_type = PERLSI_MAIN;
488	PL_curstack = PL_curstackinfo->si_stack;	502	PL_curstack = PL_curstackinfo->si_stack;
489	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	503	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
490		504
…		…
511		525
512	New(54,PL_savestack,96,ANY);	526	New(54,PL_savestack,96,ANY);
513	PL_savestack_ix = 0;	527	PL_savestack_ix = 0;
514	PL_savestack_max = 96;	528	PL_savestack_max = 96;
515		529
		530	#if PERL_VERSION < 9
516	New(54,PL_retstack,8,OP*);	531	New(54,PL_retstack,8,OP*);
517	PL_retstack_ix = 0;	532	PL_retstack_ix = 0;
518	PL_retstack_max = 8;	533	PL_retstack_max = 8;
		534	#endif
		535
		536	UNLOCK;
519	}	537	}
520		538
521	/*	539	/*
522	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
523	* still there is a memleak of 128 bytes...
524	*/	541	*/
525	STATIC void	542	STATIC void
526	destroy_stacks(pTHX)	543	destroy_stacks(pTHX)
527	{	544	{
528	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
529	{	546	{
530	/* is this ugly, I ask? */	547	/* is this ugly, I ask? */
531	while (PL_scopestack_ix)	548	LEAVE_SCOPE (0);
532	LEAVE;
533		549
534	/* sure it is, but more important: is it correct?? :/ */	550	/* sure it is, but more important: is it correct?? :/ */
535	while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
536	FREETMPS;	551	FREETMPS;
		552
		553	/POPSTACK_TO (PL_mainstack);//D//use/
537	}	554	}
538		555
539	while (PL_curstackinfo->si_next)	556	while (PL_curstackinfo->si_next)
540	PL_curstackinfo = PL_curstackinfo->si_next;	557	PL_curstackinfo = PL_curstackinfo->si_next;
541		558
542	while (PL_curstackinfo)	559	while (PL_curstackinfo)
543	{	560	{
544	PERL_SI *p = PL_curstackinfo->si_prev;	561	PERL_SI *p = PL_curstackinfo->si_prev;
545		562
546	{	563	{ /D//remove/
547	dSP;	564	dSP;
548	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);	565	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
549	PUTBACK; /* possibly superfluous */	566	PUTBACK; /* possibly superfluous */
550	}	567	}
551		568
552	if (!IN_DESTRUCT)	569	if (!IN_DESTRUCT)
553	{	570	{
554	dounwind(-1);	571	dounwind (-1);/D//remove/
555	SvREFCNT_dec(PL_curstackinfo->si_stack);	572	SvREFCNT_dec (PL_curstackinfo->si_stack);
556	}	573	}
557		574
558	Safefree(PL_curstackinfo->si_cxstack);	575	Safefree (PL_curstackinfo->si_cxstack);
559	Safefree(PL_curstackinfo);	576	Safefree (PL_curstackinfo);
560	PL_curstackinfo = p;	577	PL_curstackinfo = p;
561	}	578	}
562		579
563	Safefree(PL_tmps_stack);	580	Safefree (PL_tmps_stack);
564	Safefree(PL_markstack);	581	Safefree (PL_markstack);
565	Safefree(PL_scopestack);	582	Safefree (PL_scopestack);
566	Safefree(PL_savestack);	583	Safefree (PL_savestack);
		584	#if PERL_VERSION < 9
567	Safefree(PL_retstack);	585	Safefree (PL_retstack);
		586	#endif
568	}	587	}
569		588
570	static void	589	static void
571	allocate_stack (Coro__State ctx, int alloc)	590	allocate_stack (Coro__State ctx, int alloc)
572	{	591	{
…		…
575	New (0, stack, 1, coro_stack);	594	New (0, stack, 1, coro_stack);
576		595
577	stack->refcnt = 1;	596	stack->refcnt = 1;
578	stack->usecnt = 1;	597	stack->usecnt = 1;
579	stack->gencnt = ctx->gencnt = 0;	598	stack->gencnt = ctx->gencnt = 0;
		599
580	if (alloc)	600	if (alloc)
581	{	601	{
582	#if HAVE_MMAP	602	#if HAVE_MMAP
583	stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */	603	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
584	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	604	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
585	if (stack->sptr == (void *)-1)	605	if (stack->sptr == (void *)-1)
586	#endif	606	#endif
587	{	607	{
588	/FIXME//D//* reasonable stack size! */	608	/FIXME//D//* reasonable stack size! */
589	stack->ssize = -4096 * sizeof (long);	609	stack->ssize = - (STACKSIZE * sizeof (long));
590	New (0, stack->sptr, 4096, long);	610	New (0, stack->sptr, STACKSIZE, long);
591	}	611	}
592	}	612	}
593	else	613	else
594	stack->sptr = 0;	614	stack->sptr = 0;
595		615
…		…
625	setup_coro (void *arg)	645	setup_coro (void *arg)
626	{	646	{
627	/*	647	/*
628	* emulate part of the perl startup here.	648	* emulate part of the perl startup here.
629	*/	649	*/
		650	dTHX;
630	dSP;	651	dSP;
631	Coro__State ctx = (Coro__State)arg;	652	Coro__State ctx = (Coro__State)arg;
632	SV sub_init = (SV)get_cv(SUB_INIT, FALSE);	653	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
633		654
634	coro_init_stacks (aTHX);	655	coro_init_stacks (aTHX);
635	/PL_curcop = 0;/	656	/PL_curcop = 0;/
636	/PL_in_eval = PL_in_eval;/ /* inherit */	657	/PL_in_eval = PL_in_eval;/ /* inherit */
637	SvREFCNT_dec (GvAV (PL_defgv));	658	SvREFCNT_dec (GvAV (PL_defgv));
…		…
683	continue_coro (void *arg)	704	continue_coro (void *arg)
684	{	705	{
685	/*	706	/*
686	* this is a _very_ stripped down perl interpreter ;)	707	* this is a _very_ stripped down perl interpreter ;)
687	*/	708	*/
		709	dTHX;
688	Coro__State ctx = (Coro__State)arg;	710	Coro__State ctx = (Coro__State)arg;
689	JMPENV coro_start_env;	711	JMPENV coro_start_env;
690		712
691	PL_top_env = &ctx->start_env;	713	PL_top_env = &ctx->start_env;
692		714
…		…
696		718
697	abort ();	719	abort ();
698	}	720	}
699		721
700	STATIC void	722	STATIC void
701	transfer(pTHX_ struct coro prev, struct coro next, int flags)	723	transfer (pTHX_ struct coro prev, struct coro next, int flags)
702	{	724	{
703	dSTACKLEVEL;	725	dSTACKLEVEL;
704	static struct coro *xnext;
705		726
706	if (prev != next)	727	if (prev != next)
707	{	728	{
708	xnext = next;
709
710	if (next->mainstack)	729	if (next->mainstack)
711	{	730	{
		731	LOCK;
712	SAVE (prev, flags);	732	SAVE (prev, flags);
713	LOAD (next);	733	LOAD (next);
		734	UNLOCK;
714		735
715	/* mark this state as in-use */	736	/* mark this state as in-use */
716	next->mainstack = 0;	737	next->mainstack = 0;
717	next->tmps_ix = -2;	738	next->tmps_ix = -2;
718		739
…		…
737	continue_coro, (void *)next,	758	continue_coro, (void *)next,
738	next->stack->sptr, labs (next->stack->ssize));	759	next->stack->sptr, labs (next->stack->ssize));
739	}	760	}
740		761
741	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	762	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		763	prev->cursp = stacklevel;
742	/* don't add any code here */	764	/* don't add any code here */
743	}	765	}
744		766	else
		767	next->cursp = stacklevel;
745	}	768	}
746	else if (next->tmps_ix == -2)	769	else if (next->tmps_ix == -2)
747	croak ("tried to transfer to running coroutine");	770	croak ("tried to transfer to running coroutine");
748	else	771	else
749	{	772	{
		773	LOCK;
750	SAVE (prev, -1); /* first get rid of the old state */	774	SAVE (prev, -1); /* first get rid of the old state */
		775	UNLOCK;
751		776
752	if (flags & TRANSFER_SAVE_CCTXT)	777	if (flags & TRANSFER_SAVE_CCTXT)
753	{	778	{
754	if (!prev->stack)	779	if (!prev->stack)
755	allocate_stack (prev, 0);	780	allocate_stack (prev, 0);
…		…
757	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	782	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
758	{	783	{
759	PL_top_env = &next->start_env;	784	PL_top_env = &next->start_env;
760		785
761	setup_coro (next);	786	setup_coro (next);
		787	next->cursp = stacklevel;
762		788
763	prev->stack->refcnt++;	789	prev->stack->refcnt++;
764	prev->stack->usecnt++;	790	prev->stack->usecnt++;
765	next->stack = prev->stack;	791	next->stack = prev->stack;
766	next->gencnt = prev->gencnt;	792	next->gencnt = prev->gencnt;
…		…
771	allocate_stack (next, 1);	797	allocate_stack (next, 1);
772	coro_create (&(next->stack->cctx),	798	coro_create (&(next->stack->cctx),
773	setup_coro, (void *)next,	799	setup_coro, (void *)next,
774	next->stack->sptr, labs (next->stack->ssize));	800	next->stack->sptr, labs (next->stack->ssize));
775	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	801	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
		802	prev->cursp = stacklevel;
776	/* don't add any code here */	803	/* don't add any code here */
777	}	804	}
778	}	805	}
779	else	806	else
		807	{
780	setup_coro (next);	808	setup_coro (next);
		809	next->cursp = stacklevel;
		810	}
781	}	811	}
782
783	/*
784	* xnext is now either prev or next, depending on wether
785	* we switched the c stack or not. that's why I use a global
786	* variable, that should become thread-specific at one point.
787	*/
788	xnext->cursp = stacklevel;
789	}	812	}
790		813
		814	LOCK;
791	if (coro_mortal)	815	if (coro_mortal)
792	{	816	{
793	SvREFCNT_dec (coro_mortal);	817	SvREFCNT_dec (coro_mortal);
794	coro_mortal = 0;	818	coro_mortal = 0;
795	}	819	}
		820	UNLOCK;
796	}	821	}
797		822
798	#define SV_CORO(sv,func) \	823	#define SV_CORO(sv,func) \
799	do { \	824	do { \
800	if (SvROK (sv)) \	825	if (SvROK (sv)) \
801	sv = SvRV (sv); \	826	sv = SvRV (sv); \
802	\	827	\
803	if (SvTYPE(sv) == SVt_PVHV) \	828	if (SvTYPE (sv) == SVt_PVHV) \
804	{ \	829	{ \
805	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \	830	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
806	\	831	\
807	if (!he) \	832	if (!he) \
808	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \	833	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
809	\	834	\
810	(sv) = SvRV (HeVAL(he)); \	835	(sv) = SvRV (HeVAL(he)); \
811	} \	836	} \
812	\	837	\
813	/* must also be changed inside Coro::Cont::yield */ \	838	/* must also be changed inside Coro::Cont::yield */ \
814	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \	839	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
815	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \	840	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
816	\	841	\
817	} while(0)	842	} while(0)
818		843
819	#define SvSTATE(sv) (struct coro *)SvIV (sv)	844	#define SvSTATE(sv) (struct coro *)SvIV (sv)
…		…
822	api_transfer(pTHX_ SV prev, SV next, int flags)	847	api_transfer(pTHX_ SV prev, SV next, int flags)
823	{	848	{
824	SV_CORO (prev, "Coro::transfer");	849	SV_CORO (prev, "Coro::transfer");
825	SV_CORO (next, "Coro::transfer");	850	SV_CORO (next, "Coro::transfer");
826		851
827	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);	852	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
828	}	853	}
829		854
830	/ Coro ******************************************************************/	855	/ Coro ******************************************************************/
831		856
832	#define PRIO_MAX 3	857	#define PRIO_MAX 3
…		…
840	static GV coro_current, coro_idle;	865	static GV coro_current, coro_idle;
841	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	866	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
842	static int coro_nready;	867	static int coro_nready;
843		868
844	static void	869	static void
845	coro_enq (SV *sv)	870	coro_enq (pTHX_ SV *sv)
846	{	871	{
847	if (SvTYPE (sv) == SVt_PVHV)	872	if (SvTYPE (sv) == SVt_PVHV)
848	{	873	{
849	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);	874	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
850	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;	875	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
…		…
861		886
862	croak ("Coro::ready tried to enqueue something that is not a coroutine");	887	croak ("Coro::ready tried to enqueue something that is not a coroutine");
863	}	888	}
864		889
865	static SV *	890	static SV *
866	coro_deq (int min_prio)	891	coro_deq (pTHX_ int min_prio)
867	{	892	{
868	int prio = PRIO_MAX - PRIO_MIN;	893	int prio = PRIO_MAX - PRIO_MIN;
869		894
870	min_prio -= PRIO_MIN;	895	min_prio -= PRIO_MIN;
871	if (min_prio < 0)	896	if (min_prio < 0)
…		…
882	}	907	}
883		908
884	static void	909	static void
885	api_ready (SV *coro)	910	api_ready (SV *coro)
886	{	911	{
		912	dTHX;
		913
887	if (SvROK (coro))	914	if (SvROK (coro))
888	coro = SvRV (coro);	915	coro = SvRV (coro);
889		916
		917	LOCK;
890	coro_enq (SvREFCNT_inc (coro));	918	coro_enq (aTHX_ SvREFCNT_inc (coro));
		919	UNLOCK;
891	}	920	}
892		921
893	static void	922	static void
894	api_schedule (void)	923	api_schedule (void)
895	{	924	{
		925	dTHX;
		926
896	SV prev, next;	927	SV prev, next;
897		928
		929	LOCK;
		930
898	prev = SvRV (GvSV (coro_current));	931	prev = SvRV (GvSV (coro_current));
899	next = coro_deq (PRIO_MIN);	932	next = coro_deq (aTHX_ PRIO_MIN);
900		933
901	if (!next)	934	if (!next)
902	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	935	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
903		936
904	/* free this only after the transfer */	937	/* free this only after the transfer */
…		…
907		940
908	SvRV (GvSV (coro_current)) = next;	941	SvRV (GvSV (coro_current)) = next;
909		942
910	SV_CORO (next, "Coro::schedule");	943	SV_CORO (next, "Coro::schedule");
911		944
		945	UNLOCK;
		946
912	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	947	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
913	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	948	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
914	}	949	}
915		950
916	static void	951	static void
917	api_cede (void)	952	api_cede (void)
918	{	953	{
		954	dTHX;
		955
		956	LOCK;
919	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));	957	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
		958	UNLOCK;
920		959
921	api_schedule ();	960	api_schedule ();
922	}	961	}
923		962
924	MODULE = Coro::State PACKAGE = Coro::State	963	MODULE = Coro::State PACKAGE = Coro::State
925		964
926	PROTOTYPES: ENABLE	965	PROTOTYPES: ENABLE
927		966
928	BOOT:	967	BOOT:
929	{ /* {} necessary for stoopid perl-5.6.x */	968	{ /* {} necessary for stoopid perl-5.6.x */
		969	#ifdef USE_ITHREADS
		970	MUTEX_INIT (&coro_mutex);
		971	#endif
		972
930	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);	973	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
931	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);	974	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
932	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	975	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
933		976
934	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	977	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
935	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	978	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
936	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	979	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
937	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	980	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
938
939	if (!padlist_cache)
940	padlist_cache = newHV ();
941		981
942	main_mainstack = PL_mainstack;	982	main_mainstack = PL_mainstack;
943		983
944	coroapi.ver = CORO_API_VERSION;	984	coroapi.ver = CORO_API_VERSION;
945	coroapi.transfer = api_transfer;	985	coroapi.transfer = api_transfer;
…		…
956	croak ("Coro::State::_newprocess expects an arrayref");	996	croak ("Coro::State::_newprocess expects an arrayref");
957		997
958	Newz (0, coro, 1, struct coro);	998	Newz (0, coro, 1, struct coro);
959		999
960	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1000	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
961	coro->mainstack = 0; /* actual work is done inside transfer */	1001	/coro->mainstack = 0; //actual work is done inside transfer /
962	coro->stack = 0;	1002	/coro->stack = 0;/
963		1003
964	/* same as JMPENV_BOOTSTRAP */	1004	/* same as JMPENV_BOOTSTRAP */
965	/* we might be able to recycle start_env, but safe is safe */	1005	/* we might be able to recycle start_env, but safe is safe */
966	//Zero(&coro->start_env, 1, JMPENV);	1006	/Zero(&coro->start_env, 1, JMPENV);/
967	coro->start_env.je_ret = -1;	1007	coro->start_env.je_ret = -1;
968	coro->start_env.je_mustcatch = TRUE;	1008	coro->start_env.je_mustcatch = TRUE;
969		1009
970	RETVAL = coro;	1010	RETVAL = coro;
971	OUTPUT:	1011	OUTPUT:
…		…
992	if (coro->mainstack && coro->mainstack != main_mainstack)	1032	if (coro->mainstack && coro->mainstack != main_mainstack)
993	{	1033	{
994	struct coro temp;	1034	struct coro temp;
995		1035
996	PUTBACK;	1036	PUTBACK;
997	SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);	1037	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
998	LOAD(aTHX_ coro);	1038	LOAD (aTHX_ coro);
999	SPAGAIN;	1039	SPAGAIN;
1000		1040
1001	destroy_stacks (aTHX);	1041	destroy_stacks (aTHX);
1002		1042
1003	LOAD((&temp)); /* this will get rid of defsv etc.. */	1043	LOAD ((&temp)); /* this will get rid of defsv etc.. */
1004	SPAGAIN;	1044	SPAGAIN;
1005		1045
1006	coro->mainstack = 0;	1046	coro->mainstack = 0;
1007	}	1047	}
1008		1048
1009	deallocate_stack (coro);	1049	deallocate_stack (coro);
1010	SvREFCNT_dec (coro->args);	1050	SvREFCNT_dec (coro->args);
1011	Safefree (coro);	1051	Safefree (coro);
1012
1013	void
1014	flush()
1015	CODE:
1016	#ifdef MAY_FLUSH
1017	flush_padlist_cache ();
1018	#endif
1019		1052
1020	void	1053	void
1021	_exit(code)	1054	_exit(code)
1022	int code	1055	int code
1023	PROTOTYPE: $	1056	PROTOTYPE: $
1024	CODE:	1057	CODE:
1025	#if defined(__GLIBC__) \|\| _POSIX_C_SOURCE
1026	_exit (code);	1058	_exit (code);
1027	#else
1028	signal (SIGTERM, SIG_DFL);
1029	raise (SIGTERM);
1030	exit (code);
1031	#endif
1032		1059
1033	MODULE = Coro::State PACKAGE = Coro::Cont	1060	MODULE = Coro::State PACKAGE = Coro::Cont
1034		1061
1035	# this is slightly dirty (should expose a c-level api)	1062	# this is slightly dirty (should expose a c-level api)
1036		1063
1037	void	1064	void
1038	yield(...)	1065	yield(...)
1039	PROTOTYPE: @	1066	PROTOTYPE: @
1040	CODE:	1067	CODE:
1041	static SV *returnstk;	1068	SV *yieldstack;
1042	SV *sv;	1069	SV *sv;
1043	AV *defav = GvAV (PL_defgv);	1070	AV *defav = GvAV (PL_defgv);
1044	struct coro prev, next;	1071	struct coro prev, next;
1045		1072
1046	if (!returnstk)	1073	yieldstack = *hv_fetch (
1047	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));	1074	(HV *)SvRV (GvSV (coro_current)),
		1075	"yieldstack", sizeof ("yieldstack") - 1,
		1076	0
		1077	);
1048		1078
1049	/* set up @_ -- ugly */	1079	/* set up @_ -- ugly */
1050	av_clear (defav);	1080	av_clear (defav);
1051	av_fill (defav, items - 1);	1081	av_fill (defav, items - 1);
1052	while (items--)	1082	while (items--)
1053	av_store (defav, items, SvREFCNT_inc (ST(items)));	1083	av_store (defav, items, SvREFCNT_inc (ST(items)));
1054		1084
1055	mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1056	sv = av_pop ((AV *)SvRV (returnstk));	1085	sv = av_pop ((AV *)SvRV (yieldstack));
1057	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));	1086	prev = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0)));
1058	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));	1087	next = (struct coro )SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0)));
1059	SvREFCNT_dec (sv);	1088	SvREFCNT_dec (sv);
1060		1089
1061	transfer(aTHX_ prev, next, 0);	1090	transfer (aTHX_ prev, next, 0);
1062		1091
1063	MODULE = Coro::State PACKAGE = Coro	1092	MODULE = Coro::State PACKAGE = Coro
1064		1093
1065	# this is slightly dirty (should expose a c-level api)	1094	# this is slightly dirty (should expose a c-level api)
1066		1095
…		…
1095	sv_setiv(sv, (IV)&coroapi);	1124	sv_setiv(sv, (IV)&coroapi);
1096	SvREADONLY_on(sv);	1125	SvREADONLY_on(sv);
1097	}	1126	}
1098	}	1127	}
1099		1128
		1129	#if !PERL_MICRO
		1130
1100	void	1131	void
1101	ready(self)	1132	ready(self)
1102	SV * self	1133	SV * self
1103	PROTOTYPE: $	1134	PROTOTYPE: $
1104	CODE:	1135	CODE:
1105	api_ready (self);	1136	api_ready (self);
		1137
		1138	#endif
1106		1139
1107	int	1140	int
1108	nready(...)	1141	nready(...)
1109	PROTOTYPE:	1142	PROTOTYPE:
1110	CODE:	1143	CODE:
…		…
1122	cede(...)	1155	cede(...)
1123	PROTOTYPE:	1156	PROTOTYPE:
1124	CODE:	1157	CODE:
1125	api_cede ();	1158	api_cede ();
1126		1159
		1160	# and these are hacks
		1161	SV *
		1162	_aio_get_state ()
		1163	CODE:
		1164	{
		1165	struct {
		1166	int errorno;
		1167	int laststype;
		1168	int laststatval;
		1169	Stat_t statcache;
		1170	} data;
		1171
		1172	data.errorno = errno;
		1173	data.laststype = PL_laststype;
		1174	data.laststatval = PL_laststatval;
		1175	data.statcache = PL_statcache;
		1176
		1177	RETVAL = newSVpvn ((char *)&data, sizeof data);
		1178	}
		1179	OUTPUT:
		1180	RETVAL
		1181
		1182	void
		1183	_aio_set_state (char *data_)
		1184	PROTOTYPE: $
		1185	CODE:
		1186	{
		1187	struct {
		1188	int errorno;
		1189	int laststype;
		1190	int laststatval;
		1191	Stat_t statcache;
		1192	} data = (void )data_;
		1193
		1194	errno = data->errorno;
		1195	PL_laststype = data->laststype;
		1196	PL_laststatval = data->laststatval;
		1197	PL_statcache = data->statcache;
		1198	}

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Comparing Coro/Coro/State.xs (file contents): Revision 1.47 by pcg, Sat Nov 15 03:53:10 2003 UTC vs. Revision 1.72 by root, Wed Feb 1 23:59:41 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.47 by pcg, Sat Nov 15 03:53:10 2003 UTC vs.
Revision 1.72 by root, Wed Feb 1 23:59:41 2006 UTC