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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.47 by root, Sun Oct 22 10:10:23 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);
		360	EXTEND (SP, 1);
151		361
152	switch (req->type)	362	switch (req->type)
153	{
154	case REQ_READDIR:
155	{	363	{
156	SV *rv = &PL_sv_undef;	364	case REQ_READDIR:
157
158	if (req->result >= 0)
159	{	365	{
160	char *buf = req->data2ptr;	366	SV *rv = &PL_sv_undef;
161	AV *av = newAV ();
162		367
163	while (req->result)	368	if (req->result >= 0)
164	{	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	{
165	SV *sv = newSVpv (buf, 0);	378	SV *sv = newSVpv (buf, 0);
166		379
167	av_push (av, sv);	380	av_store (av, i, sv);
168	buf += SvCUR (sv) + 1;	381	buf += SvCUR (sv) + 1;
169	req->result--;	382	}
		383
		384	rv = sv_2mortal (newRV_noinc ((SV *)av));
170	}	385	}
171		386
172	rv = sv_2mortal (newRV_noinc ((SV *)av));	387	PUSHs (rv);
173	}	388	}
		389	break;
174		390
175	XPUSHs (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;
176	}	429	}
177	break;
178		430
179	case REQ_OPEN:
180	{
181	/* convert fd to fh */
182	SV *fh;
183		431
184	XPUSHs (sv_2mortal (newSViv (req->result)));
185	PUTBACK;	432	PUTBACK;
186	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
187	SPAGAIN;
188
189	fh = SvREFCNT_inc (POPs);
190
191	PUSHMARK (SP);
192	XPUSHs (sv_2mortal (fh));
193	}
194	break;
195
196	case REQ_SLEEP:
197	case REQ_GROUP:
198	break;
199
200	default:
201	XPUSHs (sv_2mortal (newSViv (req->result)));
202	break;
203	}
204
205
206	PUTBACK;
207	call_sv (req->callback, G_VOID \| G_EVAL);	433	call_sv (req->callback, G_VOID \| G_EVAL);
208	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	}
209		453
210	if (SvTRUE (ERRSV))	454	if (SvTRUE (ERRSV))
211	{	455	{
212	req_free (req);	456	req_free (req);
213	croak (0);	457	croak (0);
214	}	458	}
215
216	LEAVE;
217
218	errno = errorno;
219	}	459	}
220		460
221	static void req_free (aio_req req)	461	static void req_free (aio_req req)
222	{	462	{
223	if (req->grp)
224	{
225	aio_req grp = req->grp;
226
227	/* unlink request */
228	req->grp_next->grp_prev = req->grp_prev;
229	req->grp_prev->grp_next = req->grp_next;
230
231	if (grp->grp_next == grp && grp->fd)
232	{
233	req_invoke (grp);
234	req_free (grp);
235	}
236	}
237
238	if (req->self)	463	if (req->self)
239	{	464	{
240	sv_unmagic (req->self, PERL_MAGIC_ext);	465	sv_unmagic (req->self, PERL_MAGIC_ext);
241	SvREFCNT_dec (req->self);	466	SvREFCNT_dec (req->self);
242	}	467	}
243		468
244	if (req->data)
245	SvREFCNT_dec (req->data);	469	SvREFCNT_dec (req->data);
246
247	if (req->fh)
248	SvREFCNT_dec (req->fh);	470	SvREFCNT_dec (req->fh);
249
250	if (req->fh2)
251	SvREFCNT_dec (req->fh2);	471	SvREFCNT_dec (req->fh2);
252
253	if (req->statdata)
254	Safefree (req->statdata);
255
256	if (req->callback)
257	SvREFCNT_dec (req->callback);	472	SvREFCNT_dec (req->callback);
		473	Safefree (req->statdata);
258		474
259	if (req->type == REQ_READDIR && req->result >= 0)	475	if (req->type == REQ_READDIR)
260	free (req->data2ptr);	476	free (req->data2ptr);
261		477
262	Safefree (req);	478	Safefree (req);
263	}	479	}
264		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
265	static void req_cancel (aio_req req)	495	static void req_cancel (aio_req req)
266	{	496	{
267	req->cancelled = 1;	497	req->flags \|= FLAG_CANCELLED;
268		498
269	if (req->type == REQ_GROUP)	499	req_cancel_subs (req);
270	{
271	aio_req sub;
272
273	for (sub = req->grp_next; sub != req; sub = sub->grp_next)
274	req_cancel (sub);
275	}
276	}	500	}
277		501
278	static int poll_cb ()	502	static int poll_cb (int max)
279	{	503	{
280	dSP;	504	dSP;
281	int count = 0;	505	int count = 0;
282	int do_croak = 0;	506	int do_croak = 0;
283	aio_req req;	507	aio_req req;
284		508
285	for (;;)	509	for (;;)
286	{	510	{
287	pthread_mutex_lock (&reslock);	511	while (max <= 0 \|\| count < max)
288	req = ress;
289
290	if (req)
291	{	512	{
292	ress = req->next;	513	LOCK (reslock);
		514	req = reqq_shift (&res_queue);
293		515
294	if (!ress)	516	if (req)
295	{	517	{
		518	if (!res_queue.size)
		519	{
296	/* read any signals sent by the worker threads */	520	/* read any signals sent by the worker threads */
297	char buf [32];	521	char buf [32];
298	while (read (respipe [0], buf, 32) == 32)	522	while (read (respipe [0], buf, 32) == 32)
		523	;
299	;	524	}
300
301	rese = 0;
302	}	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);
303	}	562	}
304		563
305	pthread_mutex_unlock (&reslock);	564	if (nreqs <= max_outstanding)
306
307	if (!req)
308	break;	565	break;
309		566
310	nreqs--;	567	poll_wait ();
311		568
312	if (req->type == REQ_QUIT)	569	max = 0;
313	started--;
314	else if (req->type == REQ_GROUP && req->grp_next != req)
315	{
316	req->fd = 1; /* mark request as delayed */
317	continue;
318	}
319	else
320	{
321	if (req->type == REQ_READ)
322	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
323
324	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
325	SvREADONLY_off (req->data);
326
327	if (req->statdata)
328	{
329	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
330	PL_laststatval = req->result;
331	PL_statcache = *(req->statdata);
332	}
333
334	req_invoke (req);
335
336	count++;
337	}
338
339	req_free (req);
340	}	570	}
341		571
342	return count;	572	return count;
343	}	573	}
344		574
345	static void aio_proc(void arg);	575	static void aio_proc(void arg);
346		576
347	static void start_thread (void)	577	static void start_thread (void)
348	{	578	{
349	sigset_t fullsigset, oldsigset;	579	sigset_t fullsigset, oldsigset;
350	pthread_t tid;
351	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");
352		586
353	pthread_attr_init (&attr);	587	pthread_attr_init (&attr);
354	pthread_attr_setstacksize (&attr, STACKSIZE);	588	pthread_attr_setstacksize (&attr, STACKSIZE);
355	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
356		590
357	sigfillset (&fullsigset);	591	sigfillset (&fullsigset);
		592
		593	LOCK (wrklock);
358	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
359		595
360	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;
361	started++;	602	++started;
		603	}
		604	else
		605	free (wrk);
362		606
363	sigprocmask (SIG_SETMASK, &oldsigset, 0);	607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		608	UNLOCK (wrklock);
364	}	609	}
365		610
366	static void req_send (aio_req req)	611	static void req_send (aio_req req)
367	{	612	{
368	while (started < wanted && nreqs >= started)	613	while (started < wanted && nreqs >= started)
369	start_thread ();	614	start_thread ();
370		615
371	nreqs++;	616	++nreqs;
372		617
373	pthread_mutex_lock (&reqlock);	618	LOCK (reqlock);
374		619	reqq_push (&req_queue, req);
375	req->next = 0;
376
377	if (reqe)
378	{
379	reqe->next = req;
380	reqe = req;
381	}
382	else
383	reqe = reqs = req;
384
385	pthread_cond_signal (&reqwait);	620	pthread_cond_signal (&reqwait);
386	pthread_mutex_unlock (&reqlock);	621	UNLOCK (reqlock);
387
388	if (nreqs > max_outstanding)
389	for (;;)
390	{
391	poll_cb ();
392
393	if (nreqs <= max_outstanding)
394	break;
395
396	poll_wait ();
397	}
398	}	622	}
399		623
400	static void end_thread (void)	624	static void end_thread (void)
401	{	625	{
402	aio_req req;	626	aio_req req;
		627
403	Newz (0, req, 1, aio_cb);	628	Newz (0, req, 1, aio_cb);
		629
404	req->type = REQ_QUIT;	630	req->type = REQ_QUIT;
		631	req->pri = PRI_MAX + PRI_BIAS;
405		632
406	req_send (req);	633	req_send (req);
407	}	634	}
408		635
409	static void min_parallel (int nthreads)	636	static void min_parallel (int nthreads)
…		…
426	}	653	}
427		654
428	while (started > wanted)	655	while (started > wanted)
429	{	656	{
430	poll_wait ();	657	poll_wait ();
431	poll_cb ();	658	poll_cb (0);
432	}	659	}
433	}	660	}
434		661
435	static void create_pipe ()	662	static void create_pipe ()
436	{	663	{
…		…
461	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)
462	{	689	{
463	ssize_t res;	690	ssize_t res;
464	off_t ooffset;	691	off_t ooffset;
465		692
466	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
467	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
468	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
469	res = read (fd, buf, count);	696	res = read (fd, buf, count);
470	lseek (fd, ooffset, SEEK_SET);	697	lseek (fd, ooffset, SEEK_SET);
471	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
472		699
473	return res;	700	return res;
474	}	701	}
475		702
476	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)
477	{	704	{
478	ssize_t res;	705	ssize_t res;
479	off_t ooffset;	706	off_t ooffset;
480		707
481	pthread_mutex_lock (&preadwritelock);	708	LOCK (preadwritelock);
482	ooffset = lseek (fd, 0, SEEK_CUR);	709	ooffset = lseek (fd, 0, SEEK_CUR);
483	lseek (fd, offset, SEEK_SET);	710	lseek (fd, offset, SEEK_SET);
484	res = write (fd, buf, count);	711	res = write (fd, buf, count);
485	lseek (fd, offset, SEEK_SET);	712	lseek (fd, offset, SEEK_SET);
486	pthread_mutex_unlock (&preadwritelock);	713	UNLOCK (preadwritelock);
487		714
488	return res;	715	return res;
489	}	716	}
490	#endif	717	#endif
491		718
492	#if !HAVE_FDATASYNC	719	#if !HAVE_FDATASYNC
493	# define fdatasync fsync	720	# define fdatasync fsync
494	#endif	721	#endif
495		722
496	#if !HAVE_READAHEAD	723	#if !HAVE_READAHEAD
497	# define readahead aio_readahead	724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
498		725
499	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)
500	{	727	{
501	char readahead_buf[4096];	728	dBUF;
502		729
503	while (count > 0)	730	while (count > 0)
504	{	731	{
505	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
506		733
507	pread (fd, readahead_buf, len, offset);	734	pread (fd, aio_buf, len, offset);
508	offset += len;	735	offset += len;
509	count -= len;	736	count -= len;
510	}	737	}
511		738
512	errno = 0;	739	errno = 0;
513	}	740	}
		741
514	#endif	742	#endif
515		743
516	#if !HAVE_READDIR_R	744	#if !HAVE_READDIR_R
517	# define readdir_r aio_readdir_r	745	# define readdir_r aio_readdir_r
518		746
…		…
521	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)
522	{	750	{
523	struct dirent *e;	751	struct dirent *e;
524	int errorno;	752	int errorno;
525		753
526	pthread_mutex_lock (&readdirlock);	754	LOCK (readdirlock);
527		755
528	e = readdir (dirp);	756	e = readdir (dirp);
529	errorno = errno;	757	errorno = errno;
530		758
531	if (e)	759	if (e)
…		…
534	strcpy (ent->d_name, e->d_name);	762	strcpy (ent->d_name, e->d_name);
535	}	763	}
536	else	764	else
537	*res = 0;	765	*res = 0;
538		766
539	pthread_mutex_unlock (&readdirlock);	767	UNLOCK (readdirlock);
540		768
541	errno = errorno;	769	errno = errorno;
542	return e ? 0 : -1;	770	return e ? 0 : -1;
543	}	771	}
544	#endif	772	#endif
545		773
546	/* sendfile always needs emulation */	774	/* sendfile always needs emulation */
547	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)
548	{	776	{
549	ssize_t res;	777	ssize_t res;
550		778
551	if (!count)	779	if (!count)
552	return 0;	780	return 0;
…		…
563	{	791	{
564	off_t sbytes;	792	off_t sbytes;
565	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
566		794
567	if (res < 0 && sbytes)	795	if (res < 0 && sbytes)
568	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
569	res = sbytes;	797	res = sbytes;
570	}	798	}
571		799
572	# elif __hpux	800	# elif __hpux
573	res = sendfile (ofd, ifd, offset, count, 0, 0);	801	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
601	#endif	829	#endif
602	)	830	)
603	)	831	)
604	{	832	{
605	/* emulate sendfile. this is a major pain in the ass */	833	/* emulate sendfile. this is a major pain in the ass */
606	char buf[4096];	834	dBUF;
		835
607	res = 0;	836	res = 0;
608		837
609	while (count)	838	while (count)
610	{	839	{
611	ssize_t cnt;	840	ssize_t cnt;
612		841
613	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
614		843
615	if (cnt <= 0)	844	if (cnt <= 0)
616	{	845	{
617	if (cnt && !res) res = -1;	846	if (cnt && !res) res = -1;
618	break;	847	break;
619	}	848	}
620		849
621	cnt = write (ofd, buf, cnt);	850	cnt = write (ofd, aio_buf, cnt);
622		851
623	if (cnt <= 0)	852	if (cnt <= 0)
624	{	853	{
625	if (cnt && !res) res = -1;	854	if (cnt && !res) res = -1;
626	break;	855	break;
…		…
634		863
635	return res;	864	return res;
636	}	865	}
637		866
638	/* read a full directory */	867	/* read a full directory */
639	static int scandir_ (const char path, void *namesp)	868	static void scandir_ (aio_req req, worker *self)
640	{	869	{
641	DIR *dirp = opendir (path);	870	DIR *dirp;
642	union	871	union
643	{	872	{
644	struct dirent d;	873	struct dirent d;
645	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
646	} u;	875	} *u;
647	struct dirent *entp;	876	struct dirent *entp;
648	char name, names;	877	char name, names;
649	int memlen = 4096;	878	int memlen = 4096;
650	int memofs = 0;	879	int memofs = 0;
651	int res = 0;	880	int res = 0;
652	int errorno;	881	int errorno;
653		882
654	if (!dirp)	883	LOCK (wrklock);
655	return -1;	884	self->dirp = dirp = opendir (req->dataptr);
656		885	self->dbuf = u = malloc (sizeof (*u));
657	names = malloc (memlen);	886	req->data2ptr = names = malloc (memlen);
		887	UNLOCK (wrklock);
658		888
		889	if (dirp && u && names)
659	for (;;)	890	for (;;)
660	{	891	{
		892	errno = 0;
661	errno = 0, readdir_r (dirp, &u.d, &entp);	893	readdir_r (dirp, &u->d, &entp);
662		894
663	if (!entp)	895	if (!entp)
664	break;	896	break;
665		897
666	name = entp->d_name;	898	name = entp->d_name;
667		899
668	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	900	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
669	{	901	{
670	int len = strlen (name) + 1;	902	int len = strlen (name) + 1;
671		903
672	res++;	904	res++;
673		905
674	while (memofs + len > memlen)	906	while (memofs + len > memlen)
675	{	907	{
676	memlen *= 2;	908	memlen *= 2;
		909	LOCK (wrklock);
677	names = realloc (names, memlen);	910	req->data2ptr = names = realloc (names, memlen);
		911	UNLOCK (wrklock);
		912
678	if (!names)	913	if (!names)
679	break;	914	break;
680	}	915	}
681		916
682	memcpy (names + memofs, name, len);	917	memcpy (names + memofs, name, len);
683	memofs += len;	918	memofs += len;
684	}	919	}
685	}	920	}
686		921
687	errorno = errno;
688	closedir (dirp);
689
690	if (errorno)	922	if (errno)
691	{
692	free (names);
693	errno = errorno;
694	res = -1;	923	res = -1;
695	}	924
696		925	req->result = res;
697	namesp = (void )names;
698	return res;
699	}	926	}
700		927
701	/*****************************************************************************/	928	/*****************************************************************************/
702		929
703	static void aio_proc (void thr_arg)	930	static void aio_proc (void thr_arg)
704	{	931	{
705	aio_req req;	932	aio_req req;
706	int type;	933	int type;
		934	worker self = (worker )thr_arg;
707		935
708	do	936	do
709	{	937	{
710	pthread_mutex_lock (&reqlock);	938	LOCK (reqlock);
711		939
712	for (;;)	940	for (;;)
713	{	941	{
714	req = reqs;	942	self->req = req = reqq_shift (&req_queue);
715
716	if (reqs)
717	{
718	reqs = reqs->next;
719	if (!reqs) reqe = 0;
720	}
721		943
722	if (req)	944	if (req)
723	break;	945	break;
724		946
725	pthread_cond_wait (&reqwait, &reqlock);	947	pthread_cond_wait (&reqwait, &reqlock);
726	}	948	}
727		949
728	pthread_mutex_unlock (&reqlock);	950	UNLOCK (reqlock);
729		951
730	errno = 0; /* strictly unnecessary */	952	errno = 0; /* strictly unnecessary */
		953	type = req->type; /* remember type for QUIT check */
731		954
732	if (!req->cancelled)	955	if (!(req->flags & FLAG_CANCELLED))
733	switch (req->type)	956	switch (type)
734	{	957	{
735	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;
736	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;
737		960
738	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;
739	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;
740		963
741	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
742	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
743	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
744		967
…		…
750	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
751	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
752		975
753	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
754	case REQ_FSYNC: req->result = fsync (req->fd); break;	977	case REQ_FSYNC: req->result = fsync (req->fd); break;
755	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	978	case REQ_READDIR: scandir_ (req, self); break;
756		979
757	case REQ_SLEEP:	980	case REQ_BUSY:
758	{	981	{
759	struct timeval tv;	982	struct timeval tv;
760		983
761	tv.tv_sec = req->fd;	984	tv.tv_sec = req->fd;
762	tv.tv_usec = req->fd2;	985	tv.tv_usec = req->fd2;
763		986
764	req->result = select (0, 0, 0, 0, &tv);	987	req->result = select (0, 0, 0, 0, &tv);
765	}	988	}
766		989
		990	case REQ_GROUP:
		991	case REQ_NOP:
767	case REQ_QUIT:	992	case REQ_QUIT:
768	break;	993	break;
769		994
770	default:	995	default:
771	req->result = ENOSYS;	996	req->result = ENOSYS;
772	break;	997	break;
773	}	998	}
774		999
775	req->errorno = errno;	1000	req->errorno = errno;
776		1001
777	pthread_mutex_lock (&reslock);	1002	LOCK (reslock);
778		1003
779	req->next = 0;	1004	if (!reqq_push (&res_queue, req))
780
781	if (rese)
782	{
783	rese->next = req;
784	rese = req;
785	}
786	else
787	{
788	rese = ress = req;
789
790	/* write a dummy byte to the pipe so fh becomes ready */	1005	/* write a dummy byte to the pipe so fh becomes ready */
791	write (respipe [1], &respipe, 1);	1006	write (respipe [1], &respipe, 1);
792	}
793		1007
794	pthread_mutex_unlock (&reslock);	1008	self->req = 0;
		1009	worker_clear (self);
		1010
		1011	UNLOCK (reslock);
795	}	1012	}
796	while (type != REQ_QUIT);	1013	while (type != REQ_QUIT);
797		1014
		1015	LOCK (wrklock);
		1016	worker_free (self);
		1017	UNLOCK (wrklock);
		1018
798	return 0;	1019	return 0;
799	}	1020	}
800		1021
801	/*****************************************************************************/	1022	/*****************************************************************************/
802		1023
803	static void atfork_prepare (void)	1024	static void atfork_prepare (void)
804	{	1025	{
805	pthread_mutex_lock (&reqlock);	1026	LOCK (wrklock);
806	pthread_mutex_lock (&reslock);	1027	LOCK (reqlock);
		1028	LOCK (reslock);
807	#if !HAVE_PREADWRITE	1029	#if !HAVE_PREADWRITE
808	pthread_mutex_lock (&preadwritelock);	1030	LOCK (preadwritelock);
809	#endif	1031	#endif
810	#if !HAVE_READDIR_R	1032	#if !HAVE_READDIR_R
811	pthread_mutex_lock (&readdirlock);	1033	LOCK (readdirlock);
812	#endif	1034	#endif
813	}	1035	}
814		1036
815	static void atfork_parent (void)	1037	static void atfork_parent (void)
816	{	1038	{
817	#if !HAVE_READDIR_R	1039	#if !HAVE_READDIR_R
818	pthread_mutex_unlock (&readdirlock);	1040	UNLOCK (readdirlock);
819	#endif	1041	#endif
820	#if !HAVE_PREADWRITE	1042	#if !HAVE_PREADWRITE
821	pthread_mutex_unlock (&preadwritelock);	1043	UNLOCK (preadwritelock);
822	#endif	1044	#endif
823	pthread_mutex_unlock (&reslock);	1045	UNLOCK (reslock);
824	pthread_mutex_unlock (&reqlock);	1046	UNLOCK (reqlock);
		1047	UNLOCK (wrklock);
825	}	1048	}
826		1049
827	static void atfork_child (void)	1050	static void atfork_child (void)
828	{	1051	{
829	aio_req prv;	1052	aio_req prv;
830		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
831	started = 0;	1071	started = 0;
832		1072	nreqs = 0;
833	while (reqs)
834	{
835	prv = reqs;
836	reqs = prv->next;
837	req_free (prv);
838	}
839
840	reqs = reqe = 0;
841
842	while (ress)
843	{
844	prv = ress;
845	ress = prv->next;
846	req_free (prv);
847	}
848
849	ress = rese = 0;
850		1073
851	close (respipe [0]);	1074	close (respipe [0]);
852	close (respipe [1]);	1075	close (respipe [1]);
853	create_pipe ();	1076	create_pipe ();
854		1077
855	atfork_parent ();	1078	atfork_parent ();
856	}	1079	}
857		1080
858	#define dREQ \	1081	#define dREQ \
859	aio_req req; \	1082	aio_req req; \
		1083	int req_pri = next_pri; \
		1084	next_pri = DEFAULT_PRI + PRI_BIAS; \
860	\	1085	\
861	if (SvOK (callback) && !SvROK (callback)) \	1086	if (SvOK (callback) && !SvROK (callback)) \
862	croak ("callback must be undef or of reference type"); \	1087	croak ("callback must be undef or of reference type"); \
863	\	1088	\
864	Newz (0, req, 1, aio_cb); \	1089	Newz (0, req, 1, aio_cb); \
865	if (!req) \	1090	if (!req) \
866	croak ("out of memory during aio_req allocation"); \	1091	croak ("out of memory during aio_req allocation"); \
867	\	1092	\
868	req->callback = newSVsv (callback)	1093	req->callback = newSVsv (callback); \
		1094	req->pri = req_pri
869		1095
870	#define REQ_SEND \	1096	#define REQ_SEND \
871	req_send (req); \	1097	req_send (req); \
872	\	1098	\
873	if (GIMME_V != G_VOID) \	1099	if (GIMME_V != G_VOID) \
…		…
887	create_pipe ();	1113	create_pipe ();
888	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
889	}	1115	}
890		1116
891	void	1117	void
892	min_parallel (nthreads)	1118	min_parallel (int nthreads)
893	int nthreads
894	PROTOTYPE: $	1119	PROTOTYPE: $
895		1120
896	void	1121	void
897	max_parallel (nthreads)	1122	max_parallel (int nthreads)
898	int nthreads
899	PROTOTYPE: $	1123	PROTOTYPE: $
900		1124
901	int	1125	int
902	max_outstanding (nreqs)	1126	max_outstanding (int maxreqs)
903	int nreqs	1127	PROTOTYPE: $
904	PROTOTYPE: $
905	CODE:	1128	CODE:
906	RETVAL = max_outstanding;	1129	RETVAL = max_outstanding;
907	max_outstanding = nreqs;	1130	max_outstanding = maxreqs;
		1131	OUTPUT:
		1132	RETVAL
908		1133
909	void	1134	void
910	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
911	SV * pathname	1136	SV * pathname
912	int flags	1137	int flags
…		…
1127		1352
1128	REQ_SEND;	1353	REQ_SEND;
1129	}	1354	}
1130		1355
1131	void	1356	void
1132	aio_sleep (delay,callback=&PL_sv_undef)	1357	aio_busy (delay,callback=&PL_sv_undef)
1133	double delay	1358	double delay
1134	SV * callback	1359	SV * callback
1135	PPCODE:	1360	PPCODE:
1136	{	1361	{
1137	dREQ;	1362	dREQ;
1138		1363
1139	req->type = REQ_SLEEP;	1364	req->type = REQ_BUSY;
1140	req->fd = delay < 0. ? 0 : delay;	1365	req->fd = delay < 0. ? 0 : delay;
1141	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1142		1367
1143	REQ_SEND;	1368	REQ_SEND;
1144	}	1369	}
…		…
1148	SV * callback	1373	SV * callback
1149	PROTOTYPE: ;$	1374	PROTOTYPE: ;$
1150	PPCODE:	1375	PPCODE:
1151	{	1376	{
1152	dREQ;	1377	dREQ;
		1378
1153	req->type = REQ_GROUP;	1379	req->type = REQ_GROUP;
1154	req->grp_next = req;
1155	req->grp_prev = req;
1156
1157	req_send (req);	1380	req_send (req);
		1381
1158	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1159	}	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;
1160		1411
1161	void	1412	void
1162	flush ()	1413	flush ()
1163	PROTOTYPE:	1414	PROTOTYPE:
1164	CODE:	1415	CODE:
1165	while (nreqs)	1416	while (nreqs)
1166	{	1417	{
1167	poll_wait ();	1418	poll_wait ();
1168	poll_cb ();	1419	poll_cb (0);
1169	}	1420	}
1170		1421
1171	void	1422	void
1172	poll()	1423	poll()
1173	PROTOTYPE:	1424	PROTOTYPE:
1174	CODE:	1425	CODE:
1175	if (nreqs)	1426	if (nreqs)
1176	{	1427	{
1177	poll_wait ();	1428	poll_wait ();
1178	poll_cb ();	1429	poll_cb (0);
1179	}	1430	}
1180		1431
1181	int	1432	int
1182	poll_fileno()	1433	poll_fileno()
1183	PROTOTYPE:	1434	PROTOTYPE:
…		…
1188		1439
1189	int	1440	int
1190	poll_cb(...)	1441	poll_cb(...)
1191	PROTOTYPE:	1442	PROTOTYPE:
1192	CODE:	1443	CODE:
1193	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);
1194	OUTPUT:	1453	OUTPUT:
1195	RETVAL	1454	RETVAL
1196		1455
1197	void	1456	void
1198	poll_wait()	1457	poll_wait()
…		…
1207	CODE:	1466	CODE:
1208	RETVAL = nreqs;	1467	RETVAL = nreqs;
1209	OUTPUT:	1468	OUTPUT:
1210	RETVAL	1469	RETVAL
1211		1470
		1471	PROTOTYPES: DISABLE
		1472
1212	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1213		1474
1214	void	1475	void
1215	cancel (aio_req_ornot req)	1476	cancel (aio_req_ornot req)
1216	PROTOTYPE:
1217	CODE:	1477	CODE:
1218	req_cancel (req);	1478	req_cancel (req);
1219		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
1220	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1221		1487
1222	void	1488	void
1223	add (aio_req grp, ...)	1489	add (aio_req grp, ...)
1224	PROTOTYPE: $;@
1225	PPCODE:	1490	PPCODE:
1226	{	1491	{
1227	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");
1228		1497
1229	for (i = 1; i < items; ++i )	1498	for (i = 1; i < items; ++i )
1230	{	1499	{
1231	if (GIMME_V != G_VOID)	1500	if (GIMME_V != G_VOID)
1232	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1233		1502
1234	aio_req req = SvAIO_REQ (ST (i));	1503	req = SvAIO_REQ (ST (i));
1235		1504
1236	if (req)	1505	if (req)
1237	{	1506	{
1238	req->grp_prev = grp;	1507	++grp->length;
1239	req->grp_next = grp->grp_next;
1240	grp->grp_next->grp_prev = req;
1241	grp->grp_next = req;
1242
1243	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;
1244	}	1517	}
1245	}	1518	}
1246	}	1519	}
1247		1520
		1521	void
		1522	cancel_subs (aio_req_ornot req)
		1523	CODE:
		1524	req_cancel_subs (req);
		1525
		1526	void
		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)
		1542	CODE:
		1543	grp->fd2 = limit;
		1544	aio_grp_feed (grp);
		1545
		1546	void
		1547	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1548	CODE:
		1549	{
		1550	SvREFCNT_dec (grp->fh2);
		1551	grp->fh2 = newSVsv (callback);
		1552
		1553	if (grp->fd2 <= 0)
		1554	grp->fd2 = 2;
		1555
		1556	aio_grp_feed (grp);
		1557	}
		1558

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.47 by root, Sun Oct 22 10:10:23 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 1.47 by root, Sun Oct 22 10:10:23 2006 UTC vs.
Revision 1.78 by root, Thu Oct 26 14:35:34 2006 UTC