[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 1.78 by root, Thu Oct 26 14:35:34 2006 UTC

…		…
		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
		5	# define _GNU_SOURCE
		6	#endif
		7
		8	/* just in case */
1	#define _REENTRANT 1	9	#define _REENTRANT 1
		10
2	#include <errno.h>	11	#include <errno.h>
3		12
4	#include "EXTERN.h"	13	#include "EXTERN.h"
5	#include "perl.h"	14	#include "perl.h"
6	#include "XSUB.h"	15	#include "XSUB.h"
39	/* used for struct dirent, AIX doesn't provide it */	48	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	49	#ifndef NAME_MAX
41	# define NAME_MAX 4096	50	# define NAME_MAX 4096
42	#endif	51	#endif
43		52
		53	#ifndef PTHREAD_STACK_MIN
		54	/* care for broken platforms, e.g. windows */
		55	# define PTHREAD_STACK_MIN 16384
		56	#endif
		57
44	#if __ia64	58	#if __ia64
45	# define STACKSIZE 65536	59	# define STACKSIZE 65536
		60	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		61	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	62	#else
47	# define STACKSIZE 8192	63	# define STACKSIZE 16384
48	#endif	64	#endif
		65
		66	/* buffer size for various temporary buffers */
		67	#define AIO_BUFSIZE 65536
		68
		69	#define dBUF \
		70	char *aio_buf; \
		71	LOCK (wrklock); \
		72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		73	UNLOCK (wrklock); \
		74	if (!aio_buf) \
		75	return -1;
49		76
50	enum {	77	enum {
51	REQ_QUIT,	78	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	79	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	83	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	85	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	86	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,	87	REQ_GROUP, REQ_NOP,
61	REQ_GROUP,	88	REQ_BUSY,
62	};	89	};
63		90
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	91	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	92	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		93
67	typedef struct aio_cb	94	typedef struct aio_cb
68	{	95	{
69	struct aio_cb grp, grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;	96	struct aio_cb *volatile next;
72
73	SV self; / the perl counterpart of this request, if any */
74		97
75	SV data, callback;	98	SV data, callback;
76	SV fh, fh2;	99	SV fh, fh2;
77	void dataptr, data2ptr;	100	void dataptr, data2ptr;
78	Stat_t *statdata;	101	Stat_t *statdata;
79	off_t offset;	102	off_t offset;
80	size_t length;	103	size_t length;
81	ssize_t result;	104	ssize_t result;
82		105
		106	STRLEN dataoffset;
83	int type;	107	int type;
84	int fd, fd2;	108	int fd, fd2;
85	int errorno;	109	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */	110	mode_t mode; /* open */
		111
88	unsigned char cancelled;	112	unsigned char flags;
		113	unsigned char pri;
		114
		115	SV self; / the perl counterpart of this request, if any */
		116	struct aio_cb grp, grp_prev, grp_next, grp_first;
89	} aio_cb;	117	} aio_cb;
		118
		119	enum {
		120	FLAG_CANCELLED = 0x01,
		121	};
90		122
91	typedef aio_cb *aio_req;	123	typedef aio_cb *aio_req;
92	typedef aio_cb *aio_req_ornot;	124	typedef aio_cb *aio_req_ornot;
93		125
		126	enum {
		127	PRI_MIN = -4,
		128	PRI_MAX = 4,
		129
		130	DEFAULT_PRI = 0,
		131	PRI_BIAS = -PRI_MIN,
		132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		133	};
		134
		135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		136
94	static int started, wanted;	137	static unsigned int started, wanted;
95	static volatile int nreqs;	138	static volatile unsigned int nreqs;
96	static int max_outstanding = 1<<30;	139	static volatile unsigned int max_outstanding = 0xffffffff;
97	static int respipe [2];	140	static int respipe [2];
98		141
		142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		144	#else
		145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		146	#endif
		147
		148	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		149	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		150
		151	/* worker threads management */
		152	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		153
		154	typedef struct worker {
		155	/* locked by wrklock */
		156	struct worker prev, next;
		157
		158	pthread_t tid;
		159
		160	/* locked by reslock, reqlock or wrklock */
		161	aio_req req; /* currently processed request */
		162	void *dbuf;
		163	DIR *dirp;
		164	} worker;
		165
		166	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		167
		168	static void worker_clear (worker *wrk)
		169	{
		170	if (wrk->dirp)
		171	{
		172	closedir (wrk->dirp);
		173	wrk->dirp = 0;
		174	}
		175
		176	if (wrk->dbuf)
		177	{
		178	free (wrk->dbuf);
		179	wrk->dbuf = 0;
		180	}
		181	}
		182
		183	static void worker_free (worker *wrk)
		184	{
		185	wrk->next->prev = wrk->prev;
		186	wrk->prev->next = wrk->next;
		187
		188	free (wrk);
		189	}
		190
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		194
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	195	/*
104	static volatile aio_req ress, rese; /* queue start, queue end */	196	* a somewhat faster data structure might be nice, but
		197	* with 8 priorities this actually needs <20 insns
		198	* per shift, the most expensive operation.
		199	*/
		200	typedef struct {
		201	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		202	int size;
		203	} reqq;
105		204
		205	static reqq req_queue;
		206	static reqq res_queue;
		207
		208	int reqq_push (reqq *q, aio_req req)
		209	{
		210	int pri = req->pri;
		211	req->next = 0;
		212
		213	if (q->qe[pri])
		214	{
		215	q->qe[pri]->next = req;
		216	q->qe[pri] = req;
		217	}
		218	else
		219	q->qe[pri] = q->qs[pri] = req;
		220
		221	return q->size++;
		222	}
		223
		224	aio_req reqq_shift (reqq *q)
		225	{
		226	int pri;
		227
		228	if (!q->size)
		229	return 0;
		230
		231	--q->size;
		232
		233	for (pri = NUM_PRI; pri--; )
		234	{
		235	aio_req req = q->qs[pri];
		236
		237	if (req)
		238	{
		239	if (!(q->qs[pri] = req->next))
		240	q->qe[pri] = 0;
		241
		242	return req;
		243	}
		244	}
		245
		246	abort ();
		247	}
		248
		249	static int poll_cb (int max);
		250	static void req_invoke (aio_req req);
106	static void req_free (aio_req req);	251	static void req_free (aio_req req);
		252	static void req_cancel (aio_req req);
107		253
108	/* must be called at most once */	254	/* must be called at most once */
109	static SV req_sv (aio_req req, const char klass)	255	static SV req_sv (aio_req req, const char klass)
110	{	256	{
		257	if (!req->self)
		258	{
111	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		261	}
113		262
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
115	}	264	}
116		265
117	static aio_req SvAIO_REQ (SV *sv)	266	static aio_req SvAIO_REQ (SV *sv)
118	{	267	{
		268	MAGIC *mg;
		269
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	270	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");	271	croak ("object of class " AIO_REQ_KLASS " expected");
121		272
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	273	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		274
124	return mg ? (aio_req)mg->mg_ptr : 0;	275	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	276	}
126		277
		278	static void aio_grp_feed (aio_req grp)
		279	{
		280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		281	{
		282	int old_len = grp->length;
		283
		284	if (grp->fh2 && SvOK (grp->fh2))
		285	{
		286	dSP;
		287
		288	ENTER;
		289	SAVETMPS;
		290	PUSHMARK (SP);
		291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		292	PUTBACK;
		293	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
		294	SPAGAIN;
		295	FREETMPS;
		296	LEAVE;
		297	}
		298
		299	/* stop if no progress has been made */
		300	if (old_len == grp->length)
		301	{
		302	SvREFCNT_dec (grp->fh2);
		303	grp->fh2 = 0;
		304	break;
		305	}
		306	}
		307	}
		308
		309	static void aio_grp_dec (aio_req grp)
		310	{
		311	--grp->length;
		312
		313	/* call feeder, if applicable */
		314	aio_grp_feed (grp);
		315
		316	/* finish, if done */
		317	if (!grp->length && grp->fd)
		318	{
		319	req_invoke (grp);
		320	req_free (grp);
		321	}
		322	}
		323
127	static void poll_wait ()	324	static void poll_wait ()
128	{	325	{
129	if (nreqs && !ress)
130	{
131	fd_set rfd;	326	fd_set rfd;
		327
		328	while (nreqs)
		329	{
		330	int size;
		331	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		332	LOCK (reslock);
		333	#endif
		334	size = res_queue.size;
		335	#if !(__i386 \|\| __x86_64) /* safe without sempahore on these archs */
		336	UNLOCK (reslock);
		337	#endif
		338
		339	if (size)
		340	return;
		341
132	FD_ZERO(&rfd);	342	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);	343	FD_SET(respipe [0], &rfd);
134		344
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	345	select (respipe [0] + 1, &rfd, 0, 0, 0);
136	}	346	}
137	}	347	}
138		348
139	static void req_invoke (aio_req req)	349	static void req_invoke (aio_req req)
140	{	350	{
141	dSP;	351	dSP;
142	int errorno = errno;
143		352
144	if (req->cancelled \|\| !SvOK (req->callback))	353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
145	return;	354	{
146
147	errno = req->errorno;	355	errno = req->errorno;
148		356
149	ENTER;	357	ENTER;
		358	SAVETMPS;
150	PUSHMARK (SP);	359	PUSHMARK (SP);
151	EXTEND (SP, 1);	360	EXTEND (SP, 1);
152		361
153	switch (req->type)	362	switch (req->type)
154	{
155	case REQ_READDIR:
156	{	363	{
157	SV *rv = &PL_sv_undef;	364	case REQ_READDIR:
158
159	if (req->result >= 0)
160	{	365	{
161	char *buf = req->data2ptr;	366	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		367
164	while (req->result)	368	if (req->result >= 0)
165	{	369	{
		370	int i;
		371	char *buf = req->data2ptr;
		372	AV *av = newAV ();
		373
		374	av_extend (av, req->result - 1);
		375
		376	for (i = 0; i < req->result; ++i)
		377	{
166	SV *sv = newSVpv (buf, 0);	378	SV *sv = newSVpv (buf, 0);
167		379
168	av_push (av, sv);	380	av_store (av, i, sv);
169	buf += SvCUR (sv) + 1;	381	buf += SvCUR (sv) + 1;
170	req->result--;	382	}
		383
		384	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	385	}
172		386
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	387	PUSHs (rv);
174	}	388	}
		389	break;
175		390
176	PUSHs (rv);	391	case REQ_OPEN:
		392	{
		393	/* convert fd to fh */
		394	SV *fh;
		395
		396	PUSHs (sv_2mortal (newSViv (req->result)));
		397	PUTBACK;
		398	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		399	SPAGAIN;
		400
		401	fh = SvREFCNT_inc (POPs);
		402
		403	PUSHMARK (SP);
		404	XPUSHs (sv_2mortal (fh));
		405	}
		406	break;
		407
		408	case REQ_GROUP:
		409	req->fd = 2; /* mark group as finished */
		410
		411	if (req->data)
		412	{
		413	int i;
		414	AV av = (AV )req->data;
		415
		416	EXTEND (SP, AvFILL (av) + 1);
		417	for (i = 0; i <= AvFILL (av); ++i)
		418	PUSHs (*av_fetch (av, i, 0));
		419	}
		420	break;
		421
		422	case REQ_NOP:
		423	case REQ_BUSY:
		424	break;
		425
		426	default:
		427	PUSHs (sv_2mortal (newSViv (req->result)));
		428	break;
177	}	429	}
178	break;
179		430
180	case REQ_OPEN:
181	{
182	/* convert fd to fh */
183	SV *fh;
184		431
185	PUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	432	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
188	SPAGAIN;
189
190	fh = SvREFCNT_inc (POPs);
191
192	PUSHMARK (SP);
193	XPUSHs (sv_2mortal (fh));
194	}
195	break;
196
197	case REQ_GROUP:
198	if (req->data)
199	{
200	int i;
201	AV av = (AV )req->data;
202
203	EXTEND (SP, AvFILL (av) + 1);
204	for (i = 0; i <= AvFILL (av); ++i)
205	PUSHs (*av_fetch (av, i, 0));
206	}
207	break;
208
209	case REQ_SLEEP:
210	break;
211
212	default:
213	PUSHs (sv_2mortal (newSViv (req->result)));
214	break;
215	}
216
217
218	PUTBACK;
219	call_sv (req->callback, G_VOID \| G_EVAL);	433	call_sv (req->callback, G_VOID \| G_EVAL);
220	SPAGAIN;	434	SPAGAIN;
		435
		436	FREETMPS;
		437	LEAVE;
		438	}
		439
		440	if (req->grp)
		441	{
		442	aio_req grp = req->grp;
		443
		444	/* unlink request */
		445	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		446	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		447
		448	if (grp->grp_first == req)
		449	grp->grp_first = req->grp_next;
		450
		451	aio_grp_dec (grp);
		452	}
221		453
222	if (SvTRUE (ERRSV))	454	if (SvTRUE (ERRSV))
223	{	455	{
224	req_free (req);	456	req_free (req);
225	croak (0);	457	croak (0);
226	}	458	}
227
228	LEAVE;
229
230	errno = errorno;
231	}	459	}
232		460
233	static void req_free (aio_req req)	461	static void req_free (aio_req req)
234	{	462	{
235	if (req->grp)
236	{
237	aio_req grp = req->grp;
238
239	/* unlink request */
240	req->grp_next->grp_prev = req->grp_prev;
241	req->grp_prev->grp_next = req->grp_next;
242
243	if (grp->grp_next == grp && grp->fd)
244	{
245	req_invoke (grp);
246	req_free (grp);
247	}
248	}
249
250	if (req->self)	463	if (req->self)
251	{	464	{
252	sv_unmagic (req->self, PERL_MAGIC_ext);	465	sv_unmagic (req->self, PERL_MAGIC_ext);
253	SvREFCNT_dec (req->self);	466	SvREFCNT_dec (req->self);
254	}	467	}
255		468
256	if (req->data)
257	SvREFCNT_dec (req->data);	469	SvREFCNT_dec (req->data);
258
259	if (req->fh)
260	SvREFCNT_dec (req->fh);	470	SvREFCNT_dec (req->fh);
261
262	if (req->fh2)
263	SvREFCNT_dec (req->fh2);	471	SvREFCNT_dec (req->fh2);
264
265	if (req->statdata)
266	Safefree (req->statdata);
267
268	if (req->callback)
269	SvREFCNT_dec (req->callback);	472	SvREFCNT_dec (req->callback);
		473	Safefree (req->statdata);
270		474
271	if (req->type == REQ_READDIR && req->result >= 0)	475	if (req->type == REQ_READDIR)
272	free (req->data2ptr);	476	free (req->data2ptr);
273		477
274	Safefree (req);	478	Safefree (req);
275	}	479	}
276		480
		481	static void req_cancel_subs (aio_req grp)
		482	{
		483	aio_req sub;
		484
		485	if (grp->type != REQ_GROUP)
		486	return;
		487
		488	SvREFCNT_dec (grp->fh2);
		489	grp->fh2 = 0;
		490
		491	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		492	req_cancel (sub);
		493	}
		494
277	static void req_cancel (aio_req req)	495	static void req_cancel (aio_req req)
278	{	496	{
279	req->cancelled = 1;	497	req->flags \|= FLAG_CANCELLED;
280		498
281	if (req->type == REQ_GROUP)	499	req_cancel_subs (req);
282	{
283	aio_req sub;
284
285	for (sub = req->grp_next; sub != req; sub = sub->grp_next)
286	req_cancel (sub);
287	}
288	}	500	}
289		501
290	static int poll_cb ()	502	static int poll_cb (int max)
291	{	503	{
292	dSP;	504	dSP;
293	int count = 0;	505	int count = 0;
294	int do_croak = 0;	506	int do_croak = 0;
295	aio_req req;	507	aio_req req;
296		508
297	for (;;)	509	for (;;)
298	{	510	{
299	pthread_mutex_lock (&reslock);	511	while (max <= 0 \|\| count < max)
300	req = ress;
301
302	if (req)
303	{	512	{
304	ress = req->next;	513	LOCK (reslock);
		514	req = reqq_shift (&res_queue);
305		515
306	if (!ress)	516	if (req)
307	{	517	{
		518	if (!res_queue.size)
		519	{
308	/* read any signals sent by the worker threads */	520	/* read any signals sent by the worker threads */
309	char buf [32];	521	char buf [32];
310	while (read (respipe [0], buf, 32) == 32)	522	while (read (respipe [0], buf, 32) == 32)
		523	;
311	;	524	}
312
313	rese = 0;
314	}	525	}
		526
		527	UNLOCK (reslock);
		528
		529	if (!req)
		530	break;
		531
		532	--nreqs;
		533
		534	if (req->type == REQ_QUIT)
		535	--started;
		536	else if (req->type == REQ_GROUP && req->length)
		537	{
		538	req->fd = 1; /* mark request as delayed */
		539	continue;
		540	}
		541	else
		542	{
		543	if (req->type == REQ_READ)
		544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		545
		546	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
		547	SvREADONLY_off (req->data);
		548
		549	if (req->statdata)
		550	{
		551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		552	PL_laststatval = req->result;
		553	PL_statcache = *(req->statdata);
		554	}
		555
		556	req_invoke (req);
		557
		558	count++;
		559	}
		560
		561	req_free (req);
315	}	562	}
316		563
317	pthread_mutex_unlock (&reslock);	564	if (nreqs <= max_outstanding)
318
319	if (!req)
320	break;	565	break;
321		566
322	nreqs--;	567	poll_wait ();
323		568
324	if (req->type == REQ_QUIT)	569	max = 0;
325	started--;
326	else if (req->type == REQ_GROUP && req->grp_next != req)
327	{
328	req->fd = 1; /* mark request as delayed */
329	continue;
330	}
331	else
332	{
333	if (req->type == REQ_READ)
334	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
335
336	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
337	SvREADONLY_off (req->data);
338
339	if (req->statdata)
340	{
341	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
342	PL_laststatval = req->result;
343	PL_statcache = *(req->statdata);
344	}
345
346	req_invoke (req);
347
348	count++;
349	}
350
351	req_free (req);
352	}	570	}
353		571
354	return count;	572	return count;
355	}	573	}
356		574
357	static void aio_proc(void arg);	575	static void aio_proc(void arg);
358		576
359	static void start_thread (void)	577	static void start_thread (void)
360	{	578	{
361	sigset_t fullsigset, oldsigset;	579	sigset_t fullsigset, oldsigset;
362	pthread_t tid;
363	pthread_attr_t attr;	580	pthread_attr_t attr;
		581
		582	worker *wrk = calloc (1, sizeof (worker));
		583
		584	if (!wrk)
		585	croak ("unable to allocate worker thread data");
364		586
365	pthread_attr_init (&attr);	587	pthread_attr_init (&attr);
366	pthread_attr_setstacksize (&attr, STACKSIZE);	588	pthread_attr_setstacksize (&attr, STACKSIZE);
367	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
368		590
369	sigfillset (&fullsigset);	591	sigfillset (&fullsigset);
		592
		593	LOCK (wrklock);
370	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
371		595
372	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		597	{
		598	wrk->prev = &wrk_first;
		599	wrk->next = wrk_first.next;
		600	wrk_first.next->prev = wrk;
		601	wrk_first.next = wrk;
373	started++;	602	++started;
		603	}
		604	else
		605	free (wrk);
374		606
375	sigprocmask (SIG_SETMASK, &oldsigset, 0);	607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		608	UNLOCK (wrklock);
376	}	609	}
377		610
378	static void req_send (aio_req req)	611	static void req_send (aio_req req)
379	{	612	{
380	while (started < wanted && nreqs >= started)	613	while (started < wanted && nreqs >= started)
381	start_thread ();	614	start_thread ();
382		615
383	nreqs++;	616	++nreqs;
384		617
385	pthread_mutex_lock (&reqlock);	618	LOCK (reqlock);
386		619	reqq_push (&req_queue, req);
387	req->next = 0;
388
389	if (reqe)
390	{
391	reqe->next = req;
392	reqe = req;
393	}
394	else
395	reqe = reqs = req;
396
397	pthread_cond_signal (&reqwait);	620	pthread_cond_signal (&reqwait);
398	pthread_mutex_unlock (&reqlock);	621	UNLOCK (reqlock);
399
400	if (nreqs > max_outstanding)
401	for (;;)
402	{
403	poll_cb ();
404
405	if (nreqs <= max_outstanding)
406	break;
407
408	poll_wait ();
409	}
410	}	622	}
411		623
412	static void end_thread (void)	624	static void end_thread (void)
413	{	625	{
414	aio_req req;	626	aio_req req;
		627
415	Newz (0, req, 1, aio_cb);	628	Newz (0, req, 1, aio_cb);
		629
416	req->type = REQ_QUIT;	630	req->type = REQ_QUIT;
		631	req->pri = PRI_MAX + PRI_BIAS;
417		632
418	req_send (req);	633	req_send (req);
419	}	634	}
420		635
421	static void min_parallel (int nthreads)	636	static void min_parallel (int nthreads)
…		…
438	}	653	}
439		654
440	while (started > wanted)	655	while (started > wanted)
441	{	656	{
442	poll_wait ();	657	poll_wait ();
443	poll_cb ();	658	poll_cb (0);
444	}	659	}
445	}	660	}
446		661
447	static void create_pipe ()	662	static void create_pipe ()
448	{	663	{
…		…
473	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	688	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
474	{	689	{
475	ssize_t res;	690	ssize_t res;
476	off_t ooffset;	691	off_t ooffset;
477		692
478	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
479	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
480	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
481	res = read (fd, buf, count);	696	res = read (fd, buf, count);
482	lseek (fd, ooffset, SEEK_SET);	697	lseek (fd, ooffset, SEEK_SET);
483	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
484		699
485	return res;	700	return res;
486	}	701	}
487		702
488	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	703	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
489	{	704	{
490	ssize_t res;	705	ssize_t res;
491	off_t ooffset;	706	off_t ooffset;
492		707
493	pthread_mutex_lock (&preadwritelock);	708	LOCK (preadwritelock);
494	ooffset = lseek (fd, 0, SEEK_CUR);	709	ooffset = lseek (fd, 0, SEEK_CUR);
495	lseek (fd, offset, SEEK_SET);	710	lseek (fd, offset, SEEK_SET);
496	res = write (fd, buf, count);	711	res = write (fd, buf, count);
497	lseek (fd, offset, SEEK_SET);	712	lseek (fd, offset, SEEK_SET);
498	pthread_mutex_unlock (&preadwritelock);	713	UNLOCK (preadwritelock);
499		714
500	return res;	715	return res;
501	}	716	}
502	#endif	717	#endif
503		718
504	#if !HAVE_FDATASYNC	719	#if !HAVE_FDATASYNC
505	# define fdatasync fsync	720	# define fdatasync fsync
506	#endif	721	#endif
507		722
508	#if !HAVE_READAHEAD	723	#if !HAVE_READAHEAD
509	# define readahead aio_readahead	724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
510		725
511	static ssize_t readahead (int fd, off_t offset, size_t count)	726	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
512	{	727	{
513	char readahead_buf[4096];	728	dBUF;
514		729
515	while (count > 0)	730	while (count > 0)
516	{	731	{
517	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
518		733
519	pread (fd, readahead_buf, len, offset);	734	pread (fd, aio_buf, len, offset);
520	offset += len;	735	offset += len;
521	count -= len;	736	count -= len;
522	}	737	}
523		738
524	errno = 0;	739	errno = 0;
525	}	740	}
		741
526	#endif	742	#endif
527		743
528	#if !HAVE_READDIR_R	744	#if !HAVE_READDIR_R
529	# define readdir_r aio_readdir_r	745	# define readdir_r aio_readdir_r
530		746
…		…
533	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	749	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
534	{	750	{
535	struct dirent *e;	751	struct dirent *e;
536	int errorno;	752	int errorno;
537		753
538	pthread_mutex_lock (&readdirlock);	754	LOCK (readdirlock);
539		755
540	e = readdir (dirp);	756	e = readdir (dirp);
541	errorno = errno;	757	errorno = errno;
542		758
543	if (e)	759	if (e)
…		…
546	strcpy (ent->d_name, e->d_name);	762	strcpy (ent->d_name, e->d_name);
547	}	763	}
548	else	764	else
549	*res = 0;	765	*res = 0;
550		766
551	pthread_mutex_unlock (&readdirlock);	767	UNLOCK (readdirlock);
552		768
553	errno = errorno;	769	errno = errorno;
554	return e ? 0 : -1;	770	return e ? 0 : -1;
555	}	771	}
556	#endif	772	#endif
557		773
558	/* sendfile always needs emulation */	774	/* sendfile always needs emulation */
559	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	775	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
560	{	776	{
561	ssize_t res;	777	ssize_t res;
562		778
563	if (!count)	779	if (!count)
564	return 0;	780	return 0;
…		…
575	{	791	{
576	off_t sbytes;	792	off_t sbytes;
577	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
578		794
579	if (res < 0 && sbytes)	795	if (res < 0 && sbytes)
580	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
581	res = sbytes;	797	res = sbytes;
582	}	798	}
583		799
584	# elif __hpux	800	# elif __hpux
585	res = sendfile (ofd, ifd, offset, count, 0, 0);	801	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
613	#endif	829	#endif
614	)	830	)
615	)	831	)
616	{	832	{
617	/* emulate sendfile. this is a major pain in the ass */	833	/* emulate sendfile. this is a major pain in the ass */
618	char buf[4096];	834	dBUF;
		835
619	res = 0;	836	res = 0;
620		837
621	while (count)	838	while (count)
622	{	839	{
623	ssize_t cnt;	840	ssize_t cnt;
624		841
625	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
626		843
627	if (cnt <= 0)	844	if (cnt <= 0)
628	{	845	{
629	if (cnt && !res) res = -1;	846	if (cnt && !res) res = -1;
630	break;	847	break;
631	}	848	}
632		849
633	cnt = write (ofd, buf, cnt);	850	cnt = write (ofd, aio_buf, cnt);
634		851
635	if (cnt <= 0)	852	if (cnt <= 0)
636	{	853	{
637	if (cnt && !res) res = -1;	854	if (cnt && !res) res = -1;
638	break;	855	break;
…		…
646		863
647	return res;	864	return res;
648	}	865	}
649		866
650	/* read a full directory */	867	/* read a full directory */
651	static int scandir_ (const char path, void *namesp)	868	static void scandir_ (aio_req req, worker *self)
652	{	869	{
653	DIR *dirp = opendir (path);	870	DIR *dirp;
654	union	871	union
655	{	872	{
656	struct dirent d;	873	struct dirent d;
657	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
658	} u;	875	} *u;
659	struct dirent *entp;	876	struct dirent *entp;
660	char name, names;	877	char name, names;
661	int memlen = 4096;	878	int memlen = 4096;
662	int memofs = 0;	879	int memofs = 0;
663	int res = 0;	880	int res = 0;
664	int errorno;	881	int errorno;
665		882
666	if (!dirp)	883	LOCK (wrklock);
667	return -1;	884	self->dirp = dirp = opendir (req->dataptr);
668		885	self->dbuf = u = malloc (sizeof (*u));
669	names = malloc (memlen);	886	req->data2ptr = names = malloc (memlen);
		887	UNLOCK (wrklock);
670		888
		889	if (dirp && u && names)
671	for (;;)	890	for (;;)
672	{	891	{
		892	errno = 0;
673	errno = 0, readdir_r (dirp, &u.d, &entp);	893	readdir_r (dirp, &u->d, &entp);
674		894
675	if (!entp)	895	if (!entp)
676	break;	896	break;
677		897
678	name = entp->d_name;	898	name = entp->d_name;
679		899
680	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	900	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
681	{	901	{
682	int len = strlen (name) + 1;	902	int len = strlen (name) + 1;
683		903
684	res++;	904	res++;
685		905
686	while (memofs + len > memlen)	906	while (memofs + len > memlen)
687	{	907	{
688	memlen *= 2;	908	memlen *= 2;
		909	LOCK (wrklock);
689	names = realloc (names, memlen);	910	req->data2ptr = names = realloc (names, memlen);
		911	UNLOCK (wrklock);
		912
690	if (!names)	913	if (!names)
691	break;	914	break;
692	}	915	}
693		916
694	memcpy (names + memofs, name, len);	917	memcpy (names + memofs, name, len);
695	memofs += len;	918	memofs += len;
696	}	919	}
697	}	920	}
698		921
699	errorno = errno;
700	closedir (dirp);
701
702	if (errorno)	922	if (errno)
703	{
704	free (names);
705	errno = errorno;
706	res = -1;	923	res = -1;
707	}	924
708		925	req->result = res;
709	namesp = (void )names;
710	return res;
711	}	926	}
712		927
713	/*****************************************************************************/	928	/*****************************************************************************/
714		929
715	static void aio_proc (void thr_arg)	930	static void aio_proc (void thr_arg)
716	{	931	{
717	aio_req req;	932	aio_req req;
718	int type;	933	int type;
		934	worker self = (worker )thr_arg;
719		935
720	do	936	do
721	{	937	{
722	pthread_mutex_lock (&reqlock);	938	LOCK (reqlock);
723		939
724	for (;;)	940	for (;;)
725	{	941	{
726	req = reqs;	942	self->req = req = reqq_shift (&req_queue);
727
728	if (reqs)
729	{
730	reqs = reqs->next;
731	if (!reqs) reqe = 0;
732	}
733		943
734	if (req)	944	if (req)
735	break;	945	break;
736		946
737	pthread_cond_wait (&reqwait, &reqlock);	947	pthread_cond_wait (&reqwait, &reqlock);
738	}	948	}
739		949
740	pthread_mutex_unlock (&reqlock);	950	UNLOCK (reqlock);
741		951
742	errno = 0; /* strictly unnecessary */	952	errno = 0; /* strictly unnecessary */
		953	type = req->type; /* remember type for QUIT check */
743		954
744	if (!req->cancelled)	955	if (!(req->flags & FLAG_CANCELLED))
745	switch (req->type)	956	switch (type)
746	{	957	{
747	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	958	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;	959	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
749		960
750	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	961	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
751	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	962	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
752		963
753	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
754	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
755	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
756		967
…		…
762	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
763	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
764		975
765	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
766	case REQ_FSYNC: req->result = fsync (req->fd); break;	977	case REQ_FSYNC: req->result = fsync (req->fd); break;
767	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	978	case REQ_READDIR: scandir_ (req, self); break;
768		979
769	case REQ_SLEEP:	980	case REQ_BUSY:
770	{	981	{
771	struct timeval tv;	982	struct timeval tv;
772		983
773	tv.tv_sec = req->fd;	984	tv.tv_sec = req->fd;
774	tv.tv_usec = req->fd2;	985	tv.tv_usec = req->fd2;
775		986
776	req->result = select (0, 0, 0, 0, &tv);	987	req->result = select (0, 0, 0, 0, &tv);
777	}	988	}
778		989
		990	case REQ_GROUP:
		991	case REQ_NOP:
779	case REQ_QUIT:	992	case REQ_QUIT:
780	break;	993	break;
781		994
782	default:	995	default:
783	req->result = ENOSYS;	996	req->result = ENOSYS;
784	break;	997	break;
785	}	998	}
786		999
787	req->errorno = errno;	1000	req->errorno = errno;
788		1001
789	pthread_mutex_lock (&reslock);	1002	LOCK (reslock);
790		1003
791	req->next = 0;	1004	if (!reqq_push (&res_queue, req))
792
793	if (rese)
794	{
795	rese->next = req;
796	rese = req;
797	}
798	else
799	{
800	rese = ress = req;
801
802	/* write a dummy byte to the pipe so fh becomes ready */	1005	/* write a dummy byte to the pipe so fh becomes ready */
803	write (respipe [1], &respipe, 1);	1006	write (respipe [1], &respipe, 1);
804	}
805		1007
806	pthread_mutex_unlock (&reslock);	1008	self->req = 0;
		1009	worker_clear (self);
		1010
		1011	UNLOCK (reslock);
807	}	1012	}
808	while (type != REQ_QUIT);	1013	while (type != REQ_QUIT);
809		1014
		1015	LOCK (wrklock);
		1016	worker_free (self);
		1017	UNLOCK (wrklock);
		1018
810	return 0;	1019	return 0;
811	}	1020	}
812		1021
813	/*****************************************************************************/	1022	/*****************************************************************************/
814		1023
815	static void atfork_prepare (void)	1024	static void atfork_prepare (void)
816	{	1025	{
817	pthread_mutex_lock (&reqlock);	1026	LOCK (wrklock);
818	pthread_mutex_lock (&reslock);	1027	LOCK (reqlock);
		1028	LOCK (reslock);
819	#if !HAVE_PREADWRITE	1029	#if !HAVE_PREADWRITE
820	pthread_mutex_lock (&preadwritelock);	1030	LOCK (preadwritelock);
821	#endif	1031	#endif
822	#if !HAVE_READDIR_R	1032	#if !HAVE_READDIR_R
823	pthread_mutex_lock (&readdirlock);	1033	LOCK (readdirlock);
824	#endif	1034	#endif
825	}	1035	}
826		1036
827	static void atfork_parent (void)	1037	static void atfork_parent (void)
828	{	1038	{
829	#if !HAVE_READDIR_R	1039	#if !HAVE_READDIR_R
830	pthread_mutex_unlock (&readdirlock);	1040	UNLOCK (readdirlock);
831	#endif	1041	#endif
832	#if !HAVE_PREADWRITE	1042	#if !HAVE_PREADWRITE
833	pthread_mutex_unlock (&preadwritelock);	1043	UNLOCK (preadwritelock);
834	#endif	1044	#endif
835	pthread_mutex_unlock (&reslock);	1045	UNLOCK (reslock);
836	pthread_mutex_unlock (&reqlock);	1046	UNLOCK (reqlock);
		1047	UNLOCK (wrklock);
837	}	1048	}
838		1049
839	static void atfork_child (void)	1050	static void atfork_child (void)
840	{	1051	{
841	aio_req prv;	1052	aio_req prv;
842		1053
		1054	while (prv = reqq_shift (&req_queue))
		1055	req_free (prv);
		1056
		1057	while (prv = reqq_shift (&res_queue))
		1058	req_free (prv);
		1059
		1060	while (wrk_first.next != &wrk_first)
		1061	{
		1062	worker *wrk = wrk_first.next;
		1063
		1064	if (wrk->req)
		1065	req_free (wrk->req);
		1066
		1067	worker_clear (wrk);
		1068	worker_free (wrk);
		1069	}
		1070
843	started = 0;	1071	started = 0;
844		1072	nreqs = 0;
845	while (reqs)
846	{
847	prv = reqs;
848	reqs = prv->next;
849	req_free (prv);
850	}
851
852	reqs = reqe = 0;
853
854	while (ress)
855	{
856	prv = ress;
857	ress = prv->next;
858	req_free (prv);
859	}
860
861	ress = rese = 0;
862		1073
863	close (respipe [0]);	1074	close (respipe [0]);
864	close (respipe [1]);	1075	close (respipe [1]);
865	create_pipe ();	1076	create_pipe ();
866		1077
867	atfork_parent ();	1078	atfork_parent ();
868	}	1079	}
869		1080
870	#define dREQ \	1081	#define dREQ \
871	aio_req req; \	1082	aio_req req; \
		1083	int req_pri = next_pri; \
		1084	next_pri = DEFAULT_PRI + PRI_BIAS; \
872	\	1085	\
873	if (SvOK (callback) && !SvROK (callback)) \	1086	if (SvOK (callback) && !SvROK (callback)) \
874	croak ("callback must be undef or of reference type"); \	1087	croak ("callback must be undef or of reference type"); \
875	\	1088	\
876	Newz (0, req, 1, aio_cb); \	1089	Newz (0, req, 1, aio_cb); \
877	if (!req) \	1090	if (!req) \
878	croak ("out of memory during aio_req allocation"); \	1091	croak ("out of memory during aio_req allocation"); \
879	\	1092	\
880	req->callback = newSVsv (callback)	1093	req->callback = newSVsv (callback); \
		1094	req->pri = req_pri
881		1095
882	#define REQ_SEND \	1096	#define REQ_SEND \
883	req_send (req); \	1097	req_send (req); \
884	\	1098	\
885	if (GIMME_V != G_VOID) \	1099	if (GIMME_V != G_VOID) \
…		…
899	create_pipe ();	1113	create_pipe ();
900	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
901	}	1115	}
902		1116
903	void	1117	void
904	min_parallel (nthreads)	1118	min_parallel (int nthreads)
905	int nthreads
906	PROTOTYPE: $	1119	PROTOTYPE: $
907		1120
908	void	1121	void
909	max_parallel (nthreads)	1122	max_parallel (int nthreads)
910	int nthreads
911	PROTOTYPE: $	1123	PROTOTYPE: $
912		1124
913	int	1125	int
914	max_outstanding (nreqs)	1126	max_outstanding (int maxreqs)
915	int nreqs	1127	PROTOTYPE: $
916	PROTOTYPE: $
917	CODE:	1128	CODE:
918	RETVAL = max_outstanding;	1129	RETVAL = max_outstanding;
919	max_outstanding = nreqs;	1130	max_outstanding = maxreqs;
		1131	OUTPUT:
		1132	RETVAL
920		1133
921	void	1134	void
922	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
923	SV * pathname	1136	SV * pathname
924	int flags	1137	int flags
…		…
1139		1352
1140	REQ_SEND;	1353	REQ_SEND;
1141	}	1354	}
1142		1355
1143	void	1356	void
1144	aio_sleep (delay,callback=&PL_sv_undef)	1357	aio_busy (delay,callback=&PL_sv_undef)
1145	double delay	1358	double delay
1146	SV * callback	1359	SV * callback
1147	PPCODE:	1360	PPCODE:
1148	{	1361	{
1149	dREQ;	1362	dREQ;
1150		1363
1151	req->type = REQ_SLEEP;	1364	req->type = REQ_BUSY;
1152	req->fd = delay < 0. ? 0 : delay;	1365	req->fd = delay < 0. ? 0 : delay;
1153	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1154		1367
1155	REQ_SEND;	1368	REQ_SEND;
1156	}	1369	}
…		…
1160	SV * callback	1373	SV * callback
1161	PROTOTYPE: ;$	1374	PROTOTYPE: ;$
1162	PPCODE:	1375	PPCODE:
1163	{	1376	{
1164	dREQ;	1377	dREQ;
		1378
1165	req->type = REQ_GROUP;	1379	req->type = REQ_GROUP;
1166	req->grp_next = req;
1167	req->grp_prev = req;
1168
1169	req_send (req);	1380	req_send (req);
		1381
1170	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1171	}	1383	}
		1384
		1385	void
		1386	aio_nop (callback=&PL_sv_undef)
		1387	SV * callback
		1388	PPCODE:
		1389	{
		1390	dREQ;
		1391
		1392	req->type = REQ_NOP;
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
		1398	aioreq_pri (int pri = DEFAULT_PRI)
		1399	CODE:
		1400	if (pri < PRI_MIN) pri = PRI_MIN;
		1401	if (pri > PRI_MAX) pri = PRI_MAX;
		1402	next_pri = pri + PRI_BIAS;
		1403
		1404	void
		1405	aioreq_nice (int nice = 0)
		1406	CODE:
		1407	nice = next_pri - nice;
		1408	if (nice < PRI_MIN) nice = PRI_MIN;
		1409	if (nice > PRI_MAX) nice = PRI_MAX;
		1410	next_pri = nice + PRI_BIAS;
1172		1411
1173	void	1412	void
1174	flush ()	1413	flush ()
1175	PROTOTYPE:	1414	PROTOTYPE:
1176	CODE:	1415	CODE:
1177	while (nreqs)	1416	while (nreqs)
1178	{	1417	{
1179	poll_wait ();	1418	poll_wait ();
1180	poll_cb ();	1419	poll_cb (0);
1181	}	1420	}
1182		1421
1183	void	1422	void
1184	poll()	1423	poll()
1185	PROTOTYPE:	1424	PROTOTYPE:
1186	CODE:	1425	CODE:
1187	if (nreqs)	1426	if (nreqs)
1188	{	1427	{
1189	poll_wait ();	1428	poll_wait ();
1190	poll_cb ();	1429	poll_cb (0);
1191	}	1430	}
1192		1431
1193	int	1432	int
1194	poll_fileno()	1433	poll_fileno()
1195	PROTOTYPE:	1434	PROTOTYPE:
…		…
1200		1439
1201	int	1440	int
1202	poll_cb(...)	1441	poll_cb(...)
1203	PROTOTYPE:	1442	PROTOTYPE:
1204	CODE:	1443	CODE:
1205	RETVAL = poll_cb ();	1444	RETVAL = poll_cb (0);
		1445	OUTPUT:
		1446	RETVAL
		1447
		1448	int
		1449	poll_some(int max = 0)
		1450	PROTOTYPE: $
		1451	CODE:
		1452	RETVAL = poll_cb (max);
1206	OUTPUT:	1453	OUTPUT:
1207	RETVAL	1454	RETVAL
1208		1455
1209	void	1456	void
1210	poll_wait()	1457	poll_wait()
…		…
1225		1472
1226	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1227		1474
1228	void	1475	void
1229	cancel (aio_req_ornot req)	1476	cancel (aio_req_ornot req)
1230	PROTOTYPE:
1231	CODE:	1477	CODE:
1232	req_cancel (req);	1478	req_cancel (req);
1233		1479
		1480	void
		1481	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1482	CODE:
		1483	SvREFCNT_dec (req->callback);
		1484	req->callback = newSVsv (callback);
		1485
1234	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1235		1487
1236	void	1488	void
1237	add (aio_req grp, ...)	1489	add (aio_req grp, ...)
1238	PPCODE:	1490	PPCODE:
1239	{	1491	{
1240	int i;	1492	int i;
		1493	aio_req req;
		1494
		1495	if (grp->fd == 2)
		1496	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1241		1497
1242	for (i = 1; i < items; ++i )	1498	for (i = 1; i < items; ++i )
1243	{	1499	{
1244	if (GIMME_V != G_VOID)	1500	if (GIMME_V != G_VOID)
1245	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1246		1502
1247	aio_req req = SvAIO_REQ (ST (i));	1503	req = SvAIO_REQ (ST (i));
1248		1504
1249	if (req)	1505	if (req)
1250	{	1506	{
1251	req->grp_prev = grp;	1507	++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;	1508	req->grp = grp;
		1509
		1510	req->grp_prev = 0;
		1511	req->grp_next = grp->grp_first;
		1512
		1513	if (grp->grp_first)
		1514	grp->grp_first->grp_prev = req;
		1515
		1516	grp->grp_first = req;
1257	}	1517	}
1258	}	1518	}
1259	}	1519	}
1260		1520
1261	void	1521	void
		1522	cancel_subs (aio_req_ornot req)
		1523	CODE:
		1524	req_cancel_subs (req);
		1525
		1526	void
1262	result (aio_req grp, ...)	1527	result (aio_req grp, ...)
		1528	CODE:
		1529	{
		1530	int i;
		1531	AV *av = newAV ();
		1532
		1533	for (i = 1; i < items; ++i )
		1534	av_push (av, newSVsv (ST (i)));
		1535
		1536	SvREFCNT_dec (grp->data);
		1537	grp->data = (SV *)av;
		1538	}
		1539
		1540	void
		1541	limit (aio_req grp, int limit)
1263	CODE:	1542	CODE:
1264	{	1543	grp->fd2 = limit;
1265	int i;	1544	aio_grp_feed (grp);
1266	AV *av = newAV ();
1267		1545
1268	if (grp->data)	1546	void
		1547	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1548	CODE:
		1549	{
1269	SvREFCNT_dec (grp->data);	1550	SvREFCNT_dec (grp->fh2);
		1551	grp->fh2 = newSVsv (callback);
1270		1552
1271	for (i = 1; i < items; ++i )	1553	if (grp->fd2 <= 0)
1272	av_push (av, newSVsv (ST (i)));	1554	grp->fd2 = 2;
1273		1555
1274	grp->data = (SV *)av;	1556	aio_grp_feed (grp);
1275	}	1557	}
1276		1558

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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 1.78 by root, Thu Oct 26 14:35:34 2006 UTC

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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 1.78 by root, Thu Oct 26 14:35:34 2006 UTC