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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.45 by root, Sun Oct 22 00:19:05 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	typedef aio_cb *aio_group;
94		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
95	static int started, wanted;	137	static unsigned int started, wanted;
96	static volatile int nreqs;	138	static volatile unsigned int nreqs;
97	static int max_outstanding = 1<<30;	139	static volatile unsigned int max_outstanding = 0xffffffff;
98	static int respipe [2];	140	static int respipe [2];
99		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
100	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
101	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
102	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
103		194
104	static volatile aio_req reqs, reqe; /* queue start, queue end */	195	/*
105	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;
106		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);
107	static void req_free (aio_req req);	251	static void req_free (aio_req req);
		252	static void req_cancel (aio_req req);
108		253
109	/* must be called at most once */	254	/* must be called at most once */
110	static SV req_sv (aio_req req, const char klass)	255	static SV req_sv (aio_req req, const char klass)
111	{	256	{
		257	if (!req->self)
		258	{
112	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
113	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		261	}
114		262
115	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)));
116	}	264	}
117		265
118	static aio_req SvAIO_REQ (SV *sv)	266	static aio_req SvAIO_REQ (SV *sv)
119	{	267	{
		268	MAGIC *mg;
		269
120	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	270	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
121	croak ("object of class " AIO_REQ_KLASS " expected");	271	croak ("object of class " AIO_REQ_KLASS " expected");
122		272
123	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	273	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
124		274
125	return mg ? (aio_req)mg->mg_ptr : 0;	275	return mg ? (aio_req)mg->mg_ptr : 0;
126	}	276	}
127		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
128	static void poll_wait ()	324	static void poll_wait ()
129	{	325	{
130	if (nreqs && !ress)
131	{
132	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
133	FD_ZERO(&rfd);	342	FD_ZERO(&rfd);
134	FD_SET(respipe [0], &rfd);	343	FD_SET(respipe [0], &rfd);
135		344
136	select (respipe [0] + 1, &rfd, 0, 0, 0);	345	select (respipe [0] + 1, &rfd, 0, 0, 0);
137	}	346	}
138	}	347	}
139		348
140	static void req_invoke (aio_req req)	349	static void req_invoke (aio_req req)
141	{	350	{
142	dSP;	351	dSP;
143	int errorno = errno;
144		352
145	if (req->cancelled \|\| !SvOK (req->callback))	353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
146	return;	354	{
147
148	errno = req->errorno;	355	errno = req->errorno;
149		356
150	ENTER;	357	ENTER;
		358	SAVETMPS;
151	PUSHMARK (SP);	359	PUSHMARK (SP);
		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	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;
177	}	429	}
178	break;
179		430
180	case REQ_OPEN:
181	{
182	/* convert fd to fh */
183	SV *fh;
184		431
185	XPUSHs (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_SLEEP:
198	case REQ_GROUP:
199	break;
200
201	default:
202	XPUSHs (sv_2mortal (newSViv (req->result)));
203	break;
204	}
205
206
207	PUTBACK;
208	call_sv (req->callback, G_VOID \| G_EVAL);	433	call_sv (req->callback, G_VOID \| G_EVAL);
209	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	}
210		453
211	if (SvTRUE (ERRSV))	454	if (SvTRUE (ERRSV))
212	{	455	{
213	req_free (req);	456	req_free (req);
214	croak (0);	457	croak (0);
215	}	458	}
216
217	LEAVE;
218
219	errno = errorno;
220	}	459	}
221		460
222	static void req_free (aio_req req)	461	static void req_free (aio_req req)
223	{	462	{
224	if (req->grp)
225	{
226	aio_req grp = req->grp;
227
228	/* unlink request */
229	req->grp_next->grp_prev = req->grp_prev;
230	req->grp_prev->grp_next = req->grp_next;
231
232	if (grp->grp_next == grp)
233	{
234	req_invoke (grp);
235	req_free (grp);
236	}
237	}
238
239	if (req->self)	463	if (req->self)
240	{	464	{
241	sv_unmagic (req->self, PERL_MAGIC_ext);	465	sv_unmagic (req->self, PERL_MAGIC_ext);
242	SvREFCNT_dec (req->self);	466	SvREFCNT_dec (req->self);
243	}	467	}
244		468
245	if (req->data)
246	SvREFCNT_dec (req->data);	469	SvREFCNT_dec (req->data);
247
248	if (req->fh)
249	SvREFCNT_dec (req->fh);	470	SvREFCNT_dec (req->fh);
250
251	if (req->fh2)
252	SvREFCNT_dec (req->fh2);	471	SvREFCNT_dec (req->fh2);
253
254	if (req->statdata)
255	Safefree (req->statdata);
256
257	if (req->callback)
258	SvREFCNT_dec (req->callback);	472	SvREFCNT_dec (req->callback);
		473	Safefree (req->statdata);
259		474
260	if (req->type == REQ_READDIR && req->result >= 0)	475	if (req->type == REQ_READDIR)
261	free (req->data2ptr);	476	free (req->data2ptr);
262		477
263	Safefree (req);	478	Safefree (req);
264	}	479	}
265		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
266	static void req_cancel (aio_req req)	495	static void req_cancel (aio_req req)
267	{	496	{
268	req->cancelled = 1;	497	req->flags \|= FLAG_CANCELLED;
269		498
270	if (req->type == REQ_GROUP)	499	req_cancel_subs (req);
271	{
272	aio_req sub;
273
274	for (sub = req->grp_next; sub != req; sub = sub->grp_next)
275	req_cancel (sub);
276	}
277	}	500	}
278		501
279	static int poll_cb ()	502	static int poll_cb (int max)
280	{	503	{
281	dSP;	504	dSP;
282	int count = 0;	505	int count = 0;
283	int do_croak = 0;	506	int do_croak = 0;
284	aio_req req;	507	aio_req req;
285		508
286	for (;;)	509	for (;;)
287	{	510	{
288	pthread_mutex_lock (&reslock);	511	while (max <= 0 \|\| count < max)
289	req = ress;
290
291	if (req)
292	{	512	{
293	ress = req->next;	513	LOCK (reslock);
		514	req = reqq_shift (&res_queue);
294		515
295	if (!ress)	516	if (req)
296	{	517	{
		518	if (!res_queue.size)
		519	{
297	/* read any signals sent by the worker threads */	520	/* read any signals sent by the worker threads */
298	char buf [32];	521	char buf [32];
299	while (read (respipe [0], buf, 32) == 32)	522	while (read (respipe [0], buf, 32) == 32)
		523	;
300	;	524	}
301
302	rese = 0;
303	}	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);
304	}	562	}
305		563
306	pthread_mutex_unlock (&reslock);	564	if (nreqs <= max_outstanding)
307
308	if (!req)
309	break;	565	break;
310		566
311	nreqs--;	567	poll_wait ();
312		568
313	if (req->type == REQ_QUIT)	569	max = 0;
314	started--;
315	else if (req->type == REQ_GROUP && req->grp_next != req)
316	continue;
317	else
318	{
319	if (req->type == REQ_READ)
320	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
321
322	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
323	SvREADONLY_off (req->data);
324
325	if (req->statdata)
326	{
327	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
328	PL_laststatval = req->result;
329	PL_statcache = *(req->statdata);
330	}
331
332	req_invoke (req);
333
334	count++;
335	}
336
337	req_free (req);
338	}	570	}
339		571
340	return count;	572	return count;
341	}	573	}
342		574
343	static void aio_proc(void arg);	575	static void aio_proc(void arg);
344		576
345	static void start_thread (void)	577	static void start_thread (void)
346	{	578	{
347	sigset_t fullsigset, oldsigset;	579	sigset_t fullsigset, oldsigset;
348	pthread_t tid;
349	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");
350		586
351	pthread_attr_init (&attr);	587	pthread_attr_init (&attr);
352	pthread_attr_setstacksize (&attr, STACKSIZE);	588	pthread_attr_setstacksize (&attr, STACKSIZE);
353	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
354		590
355	sigfillset (&fullsigset);	591	sigfillset (&fullsigset);
		592
		593	LOCK (wrklock);
356	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
357		595
358	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;
359	started++;	602	++started;
		603	}
		604	else
		605	free (wrk);
360		606
361	sigprocmask (SIG_SETMASK, &oldsigset, 0);	607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		608	UNLOCK (wrklock);
362	}	609	}
363		610
364	static void req_send (aio_req req)	611	static void req_send (aio_req req)
365	{	612	{
366	while (started < wanted && nreqs >= started)	613	while (started < wanted && nreqs >= started)
367	start_thread ();	614	start_thread ();
368		615
369	nreqs++;	616	++nreqs;
370		617
371	pthread_mutex_lock (&reqlock);	618	LOCK (reqlock);
372		619	reqq_push (&req_queue, req);
373	req->next = 0;
374
375	if (reqe)
376	{
377	reqe->next = req;
378	reqe = req;
379	}
380	else
381	reqe = reqs = req;
382
383	pthread_cond_signal (&reqwait);	620	pthread_cond_signal (&reqwait);
384	pthread_mutex_unlock (&reqlock);	621	UNLOCK (reqlock);
385
386	if (nreqs > max_outstanding)
387	for (;;)
388	{
389	poll_cb ();
390
391	if (nreqs <= max_outstanding)
392	break;
393
394	poll_wait ();
395	}
396	}	622	}
397		623
398	static void end_thread (void)	624	static void end_thread (void)
399	{	625	{
400	aio_req req;	626	aio_req req;
		627
401	Newz (0, req, 1, aio_cb);	628	Newz (0, req, 1, aio_cb);
		629
402	req->type = REQ_QUIT;	630	req->type = REQ_QUIT;
		631	req->pri = PRI_MAX + PRI_BIAS;
403		632
404	req_send (req);	633	req_send (req);
405	}	634	}
406		635
407	static void min_parallel (int nthreads)	636	static void min_parallel (int nthreads)
…		…
424	}	653	}
425		654
426	while (started > wanted)	655	while (started > wanted)
427	{	656	{
428	poll_wait ();	657	poll_wait ();
429	poll_cb ();	658	poll_cb (0);
430	}	659	}
431	}	660	}
432		661
433	static void create_pipe ()	662	static void create_pipe ()
434	{	663	{
…		…
459	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)
460	{	689	{
461	ssize_t res;	690	ssize_t res;
462	off_t ooffset;	691	off_t ooffset;
463		692
464	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
465	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
466	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
467	res = read (fd, buf, count);	696	res = read (fd, buf, count);
468	lseek (fd, ooffset, SEEK_SET);	697	lseek (fd, ooffset, SEEK_SET);
469	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
470		699
471	return res;	700	return res;
472	}	701	}
473		702
474	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)
475	{	704	{
476	ssize_t res;	705	ssize_t res;
477	off_t ooffset;	706	off_t ooffset;
478		707
479	pthread_mutex_lock (&preadwritelock);	708	LOCK (preadwritelock);
480	ooffset = lseek (fd, 0, SEEK_CUR);	709	ooffset = lseek (fd, 0, SEEK_CUR);
481	lseek (fd, offset, SEEK_SET);	710	lseek (fd, offset, SEEK_SET);
482	res = write (fd, buf, count);	711	res = write (fd, buf, count);
483	lseek (fd, offset, SEEK_SET);	712	lseek (fd, offset, SEEK_SET);
484	pthread_mutex_unlock (&preadwritelock);	713	UNLOCK (preadwritelock);
485		714
486	return res;	715	return res;
487	}	716	}
488	#endif	717	#endif
489		718
490	#if !HAVE_FDATASYNC	719	#if !HAVE_FDATASYNC
491	# define fdatasync fsync	720	# define fdatasync fsync
492	#endif	721	#endif
493		722
494	#if !HAVE_READAHEAD	723	#if !HAVE_READAHEAD
495	# define readahead aio_readahead	724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
496		725
497	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)
498	{	727	{
499	char readahead_buf[4096];	728	dBUF;
500		729
501	while (count > 0)	730	while (count > 0)
502	{	731	{
503	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
504		733
505	pread (fd, readahead_buf, len, offset);	734	pread (fd, aio_buf, len, offset);
506	offset += len;	735	offset += len;
507	count -= len;	736	count -= len;
508	}	737	}
509		738
510	errno = 0;	739	errno = 0;
511	}	740	}
		741
512	#endif	742	#endif
513		743
514	#if !HAVE_READDIR_R	744	#if !HAVE_READDIR_R
515	# define readdir_r aio_readdir_r	745	# define readdir_r aio_readdir_r
516		746
…		…
519	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)
520	{	750	{
521	struct dirent *e;	751	struct dirent *e;
522	int errorno;	752	int errorno;
523		753
524	pthread_mutex_lock (&readdirlock);	754	LOCK (readdirlock);
525		755
526	e = readdir (dirp);	756	e = readdir (dirp);
527	errorno = errno;	757	errorno = errno;
528		758
529	if (e)	759	if (e)
…		…
532	strcpy (ent->d_name, e->d_name);	762	strcpy (ent->d_name, e->d_name);
533	}	763	}
534	else	764	else
535	*res = 0;	765	*res = 0;
536		766
537	pthread_mutex_unlock (&readdirlock);	767	UNLOCK (readdirlock);
538		768
539	errno = errorno;	769	errno = errorno;
540	return e ? 0 : -1;	770	return e ? 0 : -1;
541	}	771	}
542	#endif	772	#endif
543		773
544	/* sendfile always needs emulation */	774	/* sendfile always needs emulation */
545	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)
546	{	776	{
547	ssize_t res;	777	ssize_t res;
548		778
549	if (!count)	779	if (!count)
550	return 0;	780	return 0;
…		…
561	{	791	{
562	off_t sbytes;	792	off_t sbytes;
563	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
564		794
565	if (res < 0 && sbytes)	795	if (res < 0 && sbytes)
566	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
567	res = sbytes;	797	res = sbytes;
568	}	798	}
569		799
570	# elif __hpux	800	# elif __hpux
571	res = sendfile (ofd, ifd, offset, count, 0, 0);	801	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
599	#endif	829	#endif
600	)	830	)
601	)	831	)
602	{	832	{
603	/* emulate sendfile. this is a major pain in the ass */	833	/* emulate sendfile. this is a major pain in the ass */
604	char buf[4096];	834	dBUF;
		835
605	res = 0;	836	res = 0;
606		837
607	while (count)	838	while (count)
608	{	839	{
609	ssize_t cnt;	840	ssize_t cnt;
610		841
611	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
612		843
613	if (cnt <= 0)	844	if (cnt <= 0)
614	{	845	{
615	if (cnt && !res) res = -1;	846	if (cnt && !res) res = -1;
616	break;	847	break;
617	}	848	}
618		849
619	cnt = write (ofd, buf, cnt);	850	cnt = write (ofd, aio_buf, cnt);
620		851
621	if (cnt <= 0)	852	if (cnt <= 0)
622	{	853	{
623	if (cnt && !res) res = -1;	854	if (cnt && !res) res = -1;
624	break;	855	break;
…		…
632		863
633	return res;	864	return res;
634	}	865	}
635		866
636	/* read a full directory */	867	/* read a full directory */
637	static int scandir_ (const char path, void *namesp)	868	static void scandir_ (aio_req req, worker *self)
638	{	869	{
639	DIR *dirp = opendir (path);	870	DIR *dirp;
640	union	871	union
641	{	872	{
642	struct dirent d;	873	struct dirent d;
643	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
644	} u;	875	} *u;
645	struct dirent *entp;	876	struct dirent *entp;
646	char name, names;	877	char name, names;
647	int memlen = 4096;	878	int memlen = 4096;
648	int memofs = 0;	879	int memofs = 0;
649	int res = 0;	880	int res = 0;
650	int errorno;	881	int errorno;
651		882
652	if (!dirp)	883	LOCK (wrklock);
653	return -1;	884	self->dirp = dirp = opendir (req->dataptr);
654		885	self->dbuf = u = malloc (sizeof (*u));
655	names = malloc (memlen);	886	req->data2ptr = names = malloc (memlen);
		887	UNLOCK (wrklock);
656		888
		889	if (dirp && u && names)
657	for (;;)	890	for (;;)
658	{	891	{
		892	errno = 0;
659	errno = 0, readdir_r (dirp, &u.d, &entp);	893	readdir_r (dirp, &u->d, &entp);
660		894
661	if (!entp)	895	if (!entp)
662	break;	896	break;
663		897
664	name = entp->d_name;	898	name = entp->d_name;
665		899
666	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	900	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
667	{	901	{
668	int len = strlen (name) + 1;	902	int len = strlen (name) + 1;
669		903
670	res++;	904	res++;
671		905
672	while (memofs + len > memlen)	906	while (memofs + len > memlen)
673	{	907	{
674	memlen *= 2;	908	memlen *= 2;
		909	LOCK (wrklock);
675	names = realloc (names, memlen);	910	req->data2ptr = names = realloc (names, memlen);
		911	UNLOCK (wrklock);
		912
676	if (!names)	913	if (!names)
677	break;	914	break;
678	}	915	}
679		916
680	memcpy (names + memofs, name, len);	917	memcpy (names + memofs, name, len);
681	memofs += len;	918	memofs += len;
682	}	919	}
683	}	920	}
684		921
685	errorno = errno;
686	closedir (dirp);
687
688	if (errorno)	922	if (errno)
689	{
690	free (names);
691	errno = errorno;
692	res = -1;	923	res = -1;
693	}	924
694		925	req->result = res;
695	namesp = (void )names;
696	return res;
697	}	926	}
698		927
699	/*****************************************************************************/	928	/*****************************************************************************/
700		929
701	static void aio_proc (void thr_arg)	930	static void aio_proc (void thr_arg)
702	{	931	{
703	aio_req req;	932	aio_req req;
704	int type;	933	int type;
		934	worker self = (worker )thr_arg;
705		935
706	do	936	do
707	{	937	{
708	pthread_mutex_lock (&reqlock);	938	LOCK (reqlock);
709		939
710	for (;;)	940	for (;;)
711	{	941	{
712	req = reqs;	942	self->req = req = reqq_shift (&req_queue);
713
714	if (reqs)
715	{
716	reqs = reqs->next;
717	if (!reqs) reqe = 0;
718	}
719		943
720	if (req)	944	if (req)
721	break;	945	break;
722		946
723	pthread_cond_wait (&reqwait, &reqlock);	947	pthread_cond_wait (&reqwait, &reqlock);
724	}	948	}
725		949
726	pthread_mutex_unlock (&reqlock);	950	UNLOCK (reqlock);
727		951
728	errno = 0; /* strictly unnecessary */	952	errno = 0; /* strictly unnecessary */
		953	type = req->type; /* remember type for QUIT check */
729		954
730	if (!req->cancelled)	955	if (!(req->flags & FLAG_CANCELLED))
731	switch (req->type)	956	switch (type)
732	{	957	{
733	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;
734	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;
735		960
736	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;
737	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;
738		963
739	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
740	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
741	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
742		967
…		…
748	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
749	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
750		975
751	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
752	case REQ_FSYNC: req->result = fsync (req->fd); break;	977	case REQ_FSYNC: req->result = fsync (req->fd); break;
753	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	978	case REQ_READDIR: scandir_ (req, self); break;
754		979
755	case REQ_SLEEP:	980	case REQ_BUSY:
756	{	981	{
757	struct timeval tv;	982	struct timeval tv;
758		983
759	tv.tv_sec = req->fd;	984	tv.tv_sec = req->fd;
760	tv.tv_usec = req->fd2;	985	tv.tv_usec = req->fd2;
761		986
762	req->result = select (0, 0, 0, 0, &tv);	987	req->result = select (0, 0, 0, 0, &tv);
763	}	988	}
764		989
		990	case REQ_GROUP:
		991	case REQ_NOP:
765	case REQ_QUIT:	992	case REQ_QUIT:
766	break;	993	break;
767		994
768	default:	995	default:
769	req->result = ENOSYS;	996	req->result = ENOSYS;
770	break;	997	break;
771	}	998	}
772		999
773	req->errorno = errno;	1000	req->errorno = errno;
774		1001
775	pthread_mutex_lock (&reslock);	1002	LOCK (reslock);
776		1003
777	req->next = 0;	1004	if (!reqq_push (&res_queue, req))
778
779	if (rese)
780	{
781	rese->next = req;
782	rese = req;
783	}
784	else
785	{
786	rese = ress = req;
787
788	/* write a dummy byte to the pipe so fh becomes ready */	1005	/* write a dummy byte to the pipe so fh becomes ready */
789	write (respipe [1], &respipe, 1);	1006	write (respipe [1], &respipe, 1);
790	}
791		1007
792	pthread_mutex_unlock (&reslock);	1008	self->req = 0;
		1009	worker_clear (self);
		1010
		1011	UNLOCK (reslock);
793	}	1012	}
794	while (type != REQ_QUIT);	1013	while (type != REQ_QUIT);
795		1014
		1015	LOCK (wrklock);
		1016	worker_free (self);
		1017	UNLOCK (wrklock);
		1018
796	return 0;	1019	return 0;
797	}	1020	}
798		1021
799	/*****************************************************************************/	1022	/*****************************************************************************/
800		1023
801	static void atfork_prepare (void)	1024	static void atfork_prepare (void)
802	{	1025	{
803	pthread_mutex_lock (&reqlock);	1026	LOCK (wrklock);
804	pthread_mutex_lock (&reslock);	1027	LOCK (reqlock);
		1028	LOCK (reslock);
805	#if !HAVE_PREADWRITE	1029	#if !HAVE_PREADWRITE
806	pthread_mutex_lock (&preadwritelock);	1030	LOCK (preadwritelock);
807	#endif	1031	#endif
808	#if !HAVE_READDIR_R	1032	#if !HAVE_READDIR_R
809	pthread_mutex_lock (&readdirlock);	1033	LOCK (readdirlock);
810	#endif	1034	#endif
811	}	1035	}
812		1036
813	static void atfork_parent (void)	1037	static void atfork_parent (void)
814	{	1038	{
815	#if !HAVE_READDIR_R	1039	#if !HAVE_READDIR_R
816	pthread_mutex_unlock (&readdirlock);	1040	UNLOCK (readdirlock);
817	#endif	1041	#endif
818	#if !HAVE_PREADWRITE	1042	#if !HAVE_PREADWRITE
819	pthread_mutex_unlock (&preadwritelock);	1043	UNLOCK (preadwritelock);
820	#endif	1044	#endif
821	pthread_mutex_unlock (&reslock);	1045	UNLOCK (reslock);
822	pthread_mutex_unlock (&reqlock);	1046	UNLOCK (reqlock);
		1047	UNLOCK (wrklock);
823	}	1048	}
824		1049
825	static void atfork_child (void)	1050	static void atfork_child (void)
826	{	1051	{
827	aio_req prv;	1052	aio_req prv;
828		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
829	started = 0;	1071	started = 0;
830		1072	nreqs = 0;
831	while (reqs)
832	{
833	prv = reqs;
834	reqs = prv->next;
835	req_free (prv);
836	}
837
838	reqs = reqe = 0;
839
840	while (ress)
841	{
842	prv = ress;
843	ress = prv->next;
844	req_free (prv);
845	}
846
847	ress = rese = 0;
848		1073
849	close (respipe [0]);	1074	close (respipe [0]);
850	close (respipe [1]);	1075	close (respipe [1]);
851	create_pipe ();	1076	create_pipe ();
852		1077
853	atfork_parent ();	1078	atfork_parent ();
854	}	1079	}
855		1080
856	#define dREQ \	1081	#define dREQ \
857	aio_req req; \	1082	aio_req req; \
		1083	int req_pri = next_pri; \
		1084	next_pri = DEFAULT_PRI + PRI_BIAS; \
858	\	1085	\
859	if (SvOK (callback) && !SvROK (callback)) \	1086	if (SvOK (callback) && !SvROK (callback)) \
860	croak ("callback must be undef or of reference type"); \	1087	croak ("callback must be undef or of reference type"); \
861	\	1088	\
862	Newz (0, req, 1, aio_cb); \	1089	Newz (0, req, 1, aio_cb); \
863	if (!req) \	1090	if (!req) \
864	croak ("out of memory during aio_req allocation"); \	1091	croak ("out of memory during aio_req allocation"); \
865	\	1092	\
866	req->callback = newSVsv (callback)	1093	req->callback = newSVsv (callback); \
		1094	req->pri = req_pri
867		1095
868	#define REQ_SEND \	1096	#define REQ_SEND \
869	req_send (req); \	1097	req_send (req); \
870	\	1098	\
871	if (GIMME_V != G_VOID) \	1099	if (GIMME_V != G_VOID) \
…		…
885	create_pipe ();	1113	create_pipe ();
886	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
887	}	1115	}
888		1116
889	void	1117	void
890	min_parallel (nthreads)	1118	min_parallel (int nthreads)
891	int nthreads
892	PROTOTYPE: $	1119	PROTOTYPE: $
893		1120
894	void	1121	void
895	max_parallel (nthreads)	1122	max_parallel (int nthreads)
896	int nthreads
897	PROTOTYPE: $	1123	PROTOTYPE: $
898		1124
899	int	1125	int
900	max_outstanding (nreqs)	1126	max_outstanding (int maxreqs)
901	int nreqs	1127	PROTOTYPE: $
902	PROTOTYPE: $
903	CODE:	1128	CODE:
904	RETVAL = max_outstanding;	1129	RETVAL = max_outstanding;
905	max_outstanding = nreqs;	1130	max_outstanding = maxreqs;
		1131	OUTPUT:
		1132	RETVAL
906		1133
907	void	1134	void
908	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
909	SV * pathname	1136	SV * pathname
910	int flags	1137	int flags
…		…
1125		1352
1126	REQ_SEND;	1353	REQ_SEND;
1127	}	1354	}
1128		1355
1129	void	1356	void
1130	aio_sleep (delay,callback=&PL_sv_undef)	1357	aio_busy (delay,callback=&PL_sv_undef)
1131	double delay	1358	double delay
1132	SV * callback	1359	SV * callback
1133	PPCODE:	1360	PPCODE:
1134	{	1361	{
1135	dREQ;	1362	dREQ;
1136		1363
1137	req->type = REQ_SLEEP;	1364	req->type = REQ_BUSY;
1138	req->fd = delay < 0. ? 0 : delay;	1365	req->fd = delay < 0. ? 0 : delay;
1139	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1140		1367
1141	REQ_SEND;	1368	REQ_SEND;
1142	}	1369	}
1143		1370
1144	void	1371	void
1145	aio_group (callback=&PL_sv_undef)	1372	aio_group (callback=&PL_sv_undef)
1146	SV * callback	1373	SV * callback
1147	PROTOTYPE: ;&	1374	PROTOTYPE: ;$
1148	PPCODE:	1375	PPCODE:
1149	{	1376	{
1150	dREQ;	1377	dREQ;
		1378
1151	req->type = REQ_GROUP;	1379	req->type = REQ_GROUP;
1152	req->grp_next = req;
1153	req->grp_prev = req;
1154
1155	req_send (req);	1380	req_send (req);
		1381
1156	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1157	}	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;
1158		1411
1159	void	1412	void
1160	flush ()	1413	flush ()
1161	PROTOTYPE:	1414	PROTOTYPE:
1162	CODE:	1415	CODE:
1163	while (nreqs)	1416	while (nreqs)
1164	{	1417	{
1165	poll_wait ();	1418	poll_wait ();
1166	poll_cb ();	1419	poll_cb (0);
1167	}	1420	}
1168		1421
1169	void	1422	void
1170	poll()	1423	poll()
1171	PROTOTYPE:	1424	PROTOTYPE:
1172	CODE:	1425	CODE:
1173	if (nreqs)	1426	if (nreqs)
1174	{	1427	{
1175	poll_wait ();	1428	poll_wait ();
1176	poll_cb ();	1429	poll_cb (0);
1177	}	1430	}
1178		1431
1179	int	1432	int
1180	poll_fileno()	1433	poll_fileno()
1181	PROTOTYPE:	1434	PROTOTYPE:
…		…
1186		1439
1187	int	1440	int
1188	poll_cb(...)	1441	poll_cb(...)
1189	PROTOTYPE:	1442	PROTOTYPE:
1190	CODE:	1443	CODE:
1191	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);
1192	OUTPUT:	1453	OUTPUT:
1193	RETVAL	1454	RETVAL
1194		1455
1195	void	1456	void
1196	poll_wait()	1457	poll_wait()
…		…
1205	CODE:	1466	CODE:
1206	RETVAL = nreqs;	1467	RETVAL = nreqs;
1207	OUTPUT:	1468	OUTPUT:
1208	RETVAL	1469	RETVAL
1209		1470
		1471	PROTOTYPES: DISABLE
		1472
1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1211		1474
1212	void	1475	void
1213	cancel (aio_req_ornot req)	1476	cancel (aio_req_ornot req)
1214	PROTOTYPE:
1215	CODE:	1477	CODE:
1216	req_cancel (req);	1478	req_cancel (req);
1217		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
1218	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1219		1487
1220	void	1488	void
1221	add (aio_req grp, ...)	1489	add (aio_req grp, ...)
1222	PROTOTYPE: $;@
1223	PPCODE:	1490	PPCODE:
1224	{	1491	{
1225	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");
1226		1497
1227	for (i = 1; i < items; ++i )	1498	for (i = 1; i < items; ++i )
1228	{	1499	{
1229	aio_req req = SvAIO_REQ (ST (i));
1230
1231	req->grp_prev = grp;
1232	req->grp_next = grp->grp_next;
1233	grp->grp_next->grp_prev = req;
1234	grp->grp_next = req;
1235
1236	req->grp = grp;
1237
1238	if (GIMME_V != G_VOID)	1500	if (GIMME_V != G_VOID)
1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1502
		1503	req = SvAIO_REQ (ST (i));
		1504
		1505	if (req)
		1506	{
		1507	++grp->length;
		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;
		1517	}
1240	}	1518	}
1241	}	1519	}
1242		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 1.45 by root, Sun Oct 22 00:19:05 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 1.45 by root, Sun Oct 22 00:19:05 2006 UTC vs.
Revision 1.78 by root, Thu Oct 26 14:35:34 2006 UTC