[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs.
Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC

…		…
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	59	REQ_LINK, REQ_SYMLINK,
		60	REQ_GROUP, REQ_NOP,
60	REQ_SLEEP,	61	REQ_SLEEP,
61	REQ_GROUP,
62	};	62	};
63		63
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	64	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		66
67	typedef struct aio_cb	67	typedef struct aio_cb
68	{	68	{
69	struct aio_cb grp, grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	69	struct aio_cb *volatile next;
72
73	SV self; / the perl counterpart of this request, if any */
74		70
75	SV data, callback;	71	SV data, callback;
76	SV fh, fh2;	72	SV fh, fh2;
77	void dataptr, data2ptr;	73	void dataptr, data2ptr;
78	Stat_t *statdata;	74	Stat_t *statdata;
79	off_t offset;	75	off_t offset;
80	size_t length;	76	size_t length;
81	ssize_t result;	77	ssize_t result;
82		78
		79	STRLEN dataoffset;
83	int type;	80	int type;
84	int fd, fd2;	81	int fd, fd2;
85	int errorno;	82	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */	83	mode_t mode; /* open */
		84
88	unsigned char cancelled;	85	unsigned char flags;
		86	unsigned char pri;
		87
		88	SV self; / the perl counterpart of this request, if any */
		89	struct aio_cb grp, grp_prev, grp_next, grp_first;
89	} aio_cb;	90	} aio_cb;
		91
		92	enum {
		93	FLAG_CANCELLED = 0x01,
		94	};
90		95
91	typedef aio_cb *aio_req;	96	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	97	typedef aio_cb *aio_req_ornot;
		98
		99	enum {
		100	PRI_MIN = -4,
		101	PRI_MAX = 4,
		102
		103	DEFAULT_PRI = 0,
		104	PRI_BIAS = -PRI_MIN,
		105	};
		106
		107	static int next_pri = DEFAULT_PRI + PRI_BIAS;
93		108
94	static int started, wanted;	109	static int started, wanted;
95	static volatile int nreqs;	110	static volatile int nreqs;
96	static int max_outstanding = 1<<30;	111	static int max_outstanding = 1<<30;
97	static int respipe [2];	112	static int respipe [2];
…		…
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		117
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	118	static volatile aio_req reqs, reqe; /* queue start, queue end */
104	static volatile aio_req ress, rese; /* queue start, queue end */	119	static volatile aio_req ress, rese; /* queue start, queue end */
105		120
		121	static void req_invoke (aio_req req);
106	static void req_free (aio_req req);	122	static void req_free (aio_req req);
107		123
108	/* must be called at most once */	124	/* must be called at most once */
109	static SV req_sv (aio_req req, const char klass)	125	static SV req_sv (aio_req req, const char klass)
110	{	126	{
		127	if (!req->self)
		128	{
111	req->self = (SV *)newHV ();	129	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	130	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		131	}
113		132
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	133	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
115	}	134	}
116		135
117	static aio_req SvAIO_REQ (SV *sv)	136	static aio_req SvAIO_REQ (SV *sv)
118	{	137	{
		138	MAGIC *mg;
		139
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	140	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	141	croak ("object of class " AIO_REQ_KLASS " expected");
121		142
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	143	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		144
124	return mg ? (aio_req)mg->mg_ptr : 0;	145	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	146	}
126		147
		148	static void aio_grp_feed (aio_req grp)
		149	{
		150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		151	{
		152	int old_len = grp->length;
		153
		154	if (grp->fh2 && SvOK (grp->fh2))
		155	{
		156	dSP;
		157
		158	ENTER;
		159	SAVETMPS;
		160	PUSHMARK (SP);
		161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		162	PUTBACK;
		163	call_sv (grp->fh2, G_VOID \| G_EVAL);
		164	SPAGAIN;
		165	FREETMPS;
		166	LEAVE;
		167	}
		168
		169	/* stop if no progress has been made */
		170	if (old_len == grp->length)
		171	{
		172	SvREFCNT_dec (grp->fh2);
		173	grp->fh2 = 0;
		174	break;
		175	}
		176	}
		177	}
		178
		179	static void aio_grp_dec (aio_req grp)
		180	{
		181	--grp->length;
		182
		183	/* call feeder, if applicable */
		184	aio_grp_feed (grp);
		185
		186	/* finish, if done */
		187	if (!grp->length && grp->fd)
		188	{
		189	req_invoke (grp);
		190	req_free (grp);
		191	}
		192	}
		193
127	static void poll_wait ()	194	static void poll_wait ()
128	{	195	{
129	if (nreqs && !ress)
130	{
131	fd_set rfd;	196	fd_set rfd;
		197
		198	while (nreqs)
		199	{
		200	aio_req req;
		201	pthread_mutex_lock (&reslock);
		202	req = ress;
		203	pthread_mutex_unlock (&reslock);
		204
		205	if (req)
		206	return;
		207
132	FD_ZERO(&rfd);	208	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);	209	FD_SET(respipe [0], &rfd);
134		210
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	211	select (respipe [0] + 1, &rfd, 0, 0, 0);
136	}	212	}
…		…
139	static void req_invoke (aio_req req)	215	static void req_invoke (aio_req req)
140	{	216	{
141	dSP;	217	dSP;
142	int errorno = errno;	218	int errorno = errno;
143		219
144	if (req->cancelled \|\| !SvOK (req->callback))	220	if (req->flags & FLAG_CANCELLED \|\| !SvOK (req->callback))
145	return;	221	return;
146		222
147	errno = req->errorno;	223	errno = req->errorno;
148		224
149	ENTER;	225	ENTER;
		226	SAVETMPS;
150	PUSHMARK (SP);	227	PUSHMARK (SP);
151	EXTEND (SP, 1);	228	EXTEND (SP, 1);
152		229
153	switch (req->type)	230	switch (req->type)
154	{	231	{
…		…
193	XPUSHs (sv_2mortal (fh));	270	XPUSHs (sv_2mortal (fh));
194	}	271	}
195	break;	272	break;
196		273
197	case REQ_GROUP:	274	case REQ_GROUP:
		275	req->fd = 2; /* mark group as finished */
		276
198	if (req->data)	277	if (req->data)
199	{	278	{
200	int i;	279	int i;
201	AV av = (AV )req->data;	280	AV av = (AV )req->data;
202		281
…		…
204	for (i = 0; i <= AvFILL (av); ++i)	283	for (i = 0; i <= AvFILL (av); ++i)
205	PUSHs (*av_fetch (av, i, 0));	284	PUSHs (*av_fetch (av, i, 0));
206	}	285	}
207	break;	286	break;
208		287
		288	case REQ_NOP:
209	case REQ_SLEEP:	289	case REQ_SLEEP:
210	break;	290	break;
211		291
212	default:	292	default:
213	PUSHs (sv_2mortal (newSViv (req->result)));	293	PUSHs (sv_2mortal (newSViv (req->result)));
…		…
217		297
218	PUTBACK;	298	PUTBACK;
219	call_sv (req->callback, G_VOID \| G_EVAL);	299	call_sv (req->callback, G_VOID \| G_EVAL);
220	SPAGAIN;	300	SPAGAIN;
221		301
		302	FREETMPS;
		303	LEAVE;
		304
		305	errno = errorno;
		306
222	if (SvTRUE (ERRSV))	307	if (SvTRUE (ERRSV))
223	{	308	{
224	req_free (req);	309	req_free (req);
225	croak (0);	310	croak (0);
226	}	311	}
227
228	LEAVE;
229
230	errno = errorno;
231	}	312	}
232		313
233	static void req_free (aio_req req)	314	static void req_free (aio_req req)
234	{	315	{
235	if (req->grp)	316	if (req->grp)
236	{	317	{
237	aio_req grp = req->grp;	318	aio_req grp = req->grp;
238		319
239	/* unlink request */	320	/* unlink request */
240	req->grp_next->grp_prev = req->grp_prev;	321	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
241	req->grp_prev->grp_next = req->grp_next;	322	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
242		323
243	if (grp->grp_next == grp && grp->fd)	324	if (grp->grp_first == req)
244	{	325	grp->grp_first = req->grp_next;
245	req_invoke (grp);	326
246	req_free (grp);	327	aio_grp_dec (grp);
247	}
248	}	328	}
249		329
250	if (req->self)	330	if (req->self)
251	{	331	{
252	sv_unmagic (req->self, PERL_MAGIC_ext);	332	sv_unmagic (req->self, PERL_MAGIC_ext);
253	SvREFCNT_dec (req->self);	333	SvREFCNT_dec (req->self);
254	}	334	}
255		335
256	if (req->data)
257	SvREFCNT_dec (req->data);	336	SvREFCNT_dec (req->data);
258
259	if (req->fh)
260	SvREFCNT_dec (req->fh);	337	SvREFCNT_dec (req->fh);
261
262	if (req->fh2)
263	SvREFCNT_dec (req->fh2);	338	SvREFCNT_dec (req->fh2);
264
265	if (req->statdata)
266	Safefree (req->statdata);
267
268	if (req->callback)
269	SvREFCNT_dec (req->callback);	339	SvREFCNT_dec (req->callback);
		340	Safefree (req->statdata);
270		341
271	if (req->type == REQ_READDIR && req->result >= 0)	342	if (req->type == REQ_READDIR && req->result >= 0)
272	free (req->data2ptr);	343	free (req->data2ptr);
273		344
274	Safefree (req);	345	Safefree (req);
275	}	346	}
276		347
277	static void req_cancel (aio_req req)	348	static void req_cancel (aio_req req)
278	{	349	{
279	req->cancelled = 1;	350	req->flags \|= FLAG_CANCELLED;
280		351
281	if (req->type == REQ_GROUP)	352	if (req->type == REQ_GROUP)
282	{	353	{
283	aio_req sub;	354	aio_req sub;
284		355
285	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	356	for (sub = req->grp_first; sub; sub = sub->grp_next)
286	req_cancel (sub);	357	req_cancel (sub);
287	}	358	}
288	}	359	}
289		360
290	static int poll_cb ()	361	static int poll_cb ()
…		…
317	pthread_mutex_unlock (&reslock);	388	pthread_mutex_unlock (&reslock);
318		389
319	if (!req)	390	if (!req)
320	break;	391	break;
321		392
322	nreqs--;	393	--nreqs;
323		394
324	if (req->type == REQ_QUIT)	395	if (req->type == REQ_QUIT)
325	started--;	396	started--;
326	else if (req->type == REQ_GROUP && req->grp_next != req)	397	else if (req->type == REQ_GROUP && req->length)
327	{	398	{
328	req->fd = 1; /* mark request as delayed */	399	req->fd = 1; /* mark request as delayed */
329	continue;	400	continue;
330	}	401	}
331	else	402	else
…		…
378	static void req_send (aio_req req)	449	static void req_send (aio_req req)
379	{	450	{
380	while (started < wanted && nreqs >= started)	451	while (started < wanted && nreqs >= started)
381	start_thread ();	452	start_thread ();
382		453
383	nreqs++;	454	++nreqs;
384		455
385	pthread_mutex_lock (&reqlock);	456	pthread_mutex_lock (&reqlock);
386		457
387	req->next = 0;	458	req->next = 0;
388		459
…		…
738	}	809	}
739		810
740	pthread_mutex_unlock (&reqlock);	811	pthread_mutex_unlock (&reqlock);
741		812
742	errno = 0; /* strictly unnecessary */	813	errno = 0; /* strictly unnecessary */
		814	type = req->type; /* remember type for QUIT check */
743		815
744	if (!req->cancelled)	816	if (!(req->flags & FLAG_CANCELLED))
745	switch (req->type)	817	switch (type)
746	{	818	{
747	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	819	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
748	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	820	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
749		821
750	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	822	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
…		…
774	tv.tv_usec = req->fd2;	846	tv.tv_usec = req->fd2;
775		847
776	req->result = select (0, 0, 0, 0, &tv);	848	req->result = select (0, 0, 0, 0, &tv);
777	}	849	}
778		850
		851	case REQ_GROUP:
		852	case REQ_NOP:
779	case REQ_QUIT:	853	case REQ_QUIT:
780	break;	854	break;
781		855
782	default:	856	default:
783	req->result = ENOSYS;	857	req->result = ENOSYS;
…		…
867	atfork_parent ();	941	atfork_parent ();
868	}	942	}
869		943
870	#define dREQ \	944	#define dREQ \
871	aio_req req; \	945	aio_req req; \
		946	int req_pri = next_pri; \
		947	next_pri = DEFAULT_PRI + PRI_BIAS; \
872	\	948	\
873	if (SvOK (callback) && !SvROK (callback)) \	949	if (SvOK (callback) && !SvROK (callback)) \
874	croak ("callback must be undef or of reference type"); \	950	croak ("callback must be undef or of reference type"); \
875	\	951	\
876	Newz (0, req, 1, aio_cb); \	952	Newz (0, req, 1, aio_cb); \
877	if (!req) \	953	if (!req) \
878	croak ("out of memory during aio_req allocation"); \	954	croak ("out of memory during aio_req allocation"); \
879	\	955	\
880	req->callback = newSVsv (callback)	956	req->callback = newSVsv (callback); \
		957	req->pri = req_pri
881		958
882	#define REQ_SEND \	959	#define REQ_SEND \
883	req_send (req); \	960	req_send (req); \
884	\	961	\
885	if (GIMME_V != G_VOID) \	962	if (GIMME_V != G_VOID) \
…		…
1160	SV * callback	1237	SV * callback
1161	PROTOTYPE: ;$	1238	PROTOTYPE: ;$
1162	PPCODE:	1239	PPCODE:
1163	{	1240	{
1164	dREQ;	1241	dREQ;
		1242
1165	req->type = REQ_GROUP;	1243	req->type = REQ_GROUP;
1166	req->grp_next = req;
1167	req->grp_prev = req;
1168
1169	req_send (req);	1244	req_send (req);
		1245
1170	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1246	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1171	}	1247	}
		1248
		1249	void
		1250	aio_nop (callback=&PL_sv_undef)
		1251	SV * callback
		1252	PPCODE:
		1253	{
		1254	dREQ;
		1255
		1256	req->type = REQ_NOP;
		1257
		1258	REQ_SEND;
		1259	}
		1260
		1261	#if 0
		1262
		1263	void
		1264	aio_pri (int pri = DEFAULT_PRI)
		1265	CODE:
		1266	if (pri < PRI_MIN) pri = PRI_MIN;
		1267	if (pri > PRI_MAX) pri = PRI_MAX;
		1268	next_pri = pri + PRI_BIAS;
		1269
		1270	#endif
1172		1271
1173	void	1272	void
1174	flush ()	1273	flush ()
1175	PROTOTYPE:	1274	PROTOTYPE:
1176	CODE:	1275	CODE:
…		…
1229	cancel (aio_req_ornot req)	1328	cancel (aio_req_ornot req)
1230	PROTOTYPE:	1329	PROTOTYPE:
1231	CODE:	1330	CODE:
1232	req_cancel (req);	1331	req_cancel (req);
1233		1332
		1333	void
		1334	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1335	CODE:
		1336	SvREFCNT_dec (req->callback);
		1337	req->callback = newSVsv (callback);
		1338
1234	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1339	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1235		1340
1236	void	1341	void
1237	add (aio_req grp, ...)	1342	add (aio_req grp, ...)
1238	PPCODE:	1343	PPCODE:
1239	{	1344	{
1240	int i;	1345	int i;
		1346	aio_req req;
		1347
		1348	if (grp->fd == 2)
		1349	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1241		1350
1242	for (i = 1; i < items; ++i )	1351	for (i = 1; i < items; ++i )
1243	{	1352	{
1244	if (GIMME_V != G_VOID)	1353	if (GIMME_V != G_VOID)
1245	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1354	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1246		1355
1247	aio_req req = SvAIO_REQ (ST (i));	1356	req = SvAIO_REQ (ST (i));
1248		1357
1249	if (req)	1358	if (req)
1250	{	1359	{
1251	req->grp_prev = grp;	1360	++grp->length;
1252	req->grp_next = grp->grp_next;
1253	grp->grp_next->grp_prev = req;
1254	grp->grp_next = req;
1255
1256	req->grp = grp;	1361	req->grp = grp;
		1362
		1363	req->grp_prev = 0;
		1364	req->grp_next = grp->grp_first;
		1365
		1366	if (grp->grp_first)
		1367	grp->grp_first->grp_prev = req;
		1368
		1369	grp->grp_first = req;
1257	}	1370	}
1258	}	1371	}
1259	}	1372	}
1260		1373
1261	void	1374	void
1262	result (aio_req grp, ...)	1375	result (aio_req grp, ...)
		1376	CODE:
		1377	{
		1378	int i;
		1379	AV *av = newAV ();
		1380
		1381	for (i = 1; i < items; ++i )
		1382	av_push (av, newSVsv (ST (i)));
		1383
		1384	SvREFCNT_dec (grp->data);
		1385	grp->data = (SV *)av;
		1386	}
		1387
		1388	void
		1389	feed_limit (aio_req grp, int limit)
1263	CODE:	1390	CODE:
1264	{	1391	grp->fd2 = limit;
1265	int i;	1392	aio_grp_feed (grp);
1266	AV *av = newAV ();
1267		1393
1268	if (grp->data)	1394	void
		1395	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1396	CODE:
		1397	{
1269	SvREFCNT_dec (grp->data);	1398	SvREFCNT_dec (grp->fh2);
		1399	grp->fh2 = newSVsv (callback);
1270		1400
1271	for (i = 1; i < items; ++i )	1401	if (grp->fd2 <= 0)
1272	av_push (av, newSVsv (ST (i)));	1402	grp->fd2 = 2;
1273		1403
1274	grp->data = (SV *)av;	1404	aio_grp_feed (grp);
1275	}	1405	}
1276		1406

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs. Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC

Diff Legend

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs.
Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC