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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.42 by root, Fri Jul 21 07:35:31 2006 UTC vs.
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC

…		…
		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
13	#include <errno.h>	21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
14	#include <sys/types.h>	24	#include <sys/types.h>
15	#include <sys/stat.h>	25	#include <sys/stat.h>
16	#include <limits.h>	26	#include <limits.h>
17	#include <unistd.h>	27	#include <unistd.h>
18	#include <fcntl.h>	28	#include <fcntl.h>
…		…
39	# define NAME_MAX 4096	49	# define NAME_MAX 4096
40	#endif	50	#endif
41		51
42	#if __ia64	52	#if __ia64
43	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
44	#else	56	#else
45	# define STACKSIZE 8192	57	# define STACKSIZE 16384
46	#endif	58	#endif
		59
		60	/* buffer size for various temporary buffers */
		61	#define AIO_BUFSIZE 65536
		62
		63	#define dBUF \
		64	char *aio_buf = malloc (AIO_BUFSIZE); \
		65	if (!aio_buf) \
		66	return -1;
		67
		68	#define fBUF free (aio_buf)
47		69
48	enum {	70	enum {
49	REQ_QUIT,	71	REQ_QUIT,
50	REQ_OPEN, REQ_CLOSE,	72	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,	73	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,	76	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,	78	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,	79	REQ_LINK, REQ_SYMLINK,
		80	REQ_GROUP, REQ_NOP,
		81	REQ_BUSY,
58	};	82	};
59		83
		84	#define AIO_REQ_KLASS "IO::AIO::REQ"
		85	#define AIO_GRP_KLASS "IO::AIO::GRP"
		86
60	typedef struct aio_cb {	87	typedef struct aio_cb
		88	{
61	struct aio_cb *volatile next;	89	struct aio_cb *volatile next;
62		90
63	int type;	91	SV data, callback;
64		92	SV fh, fh2;
65	/* should receive a cleanup, with unions */	93	void dataptr, data2ptr;
66	int fd, fd2;	94	Stat_t *statdata;
67	off_t offset;	95	off_t offset;
68	size_t length;	96	size_t length;
69	ssize_t result;	97	ssize_t result;
		98
		99	STRLEN dataoffset;
		100	int type;
		101	int fd, fd2;
		102	int errorno;
70	mode_t mode; /* open */	103	mode_t mode; /* open */
71	int errorno;
72	SV data, callback;
73	SV fh, fh2;
74	void dataptr, data2ptr;
75	STRLEN dataoffset;
76		104
77	Stat_t *statdata;	105	unsigned char flags;
		106	unsigned char pri;
		107
		108	SV self; / the perl counterpart of this request, if any */
		109	struct aio_cb grp, grp_prev, grp_next, grp_first;
78	} aio_cb;	110	} aio_cb;
79		111
		112	enum {
		113	FLAG_CANCELLED = 0x01,
		114	};
		115
80	typedef aio_cb *aio_req;	116	typedef aio_cb *aio_req;
		117	typedef aio_cb *aio_req_ornot;
		118
		119	enum {
		120	PRI_MIN = -4,
		121	PRI_MAX = 4,
		122
		123	DEFAULT_PRI = 0,
		124	PRI_BIAS = -PRI_MIN,
		125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		126	};
		127
		128	static int next_pri = DEFAULT_PRI + PRI_BIAS;
81		129
82	static int started, wanted;	130	static int started, wanted;
83	static volatile int nreqs;	131	static volatile int nreqs;
84	static int max_outstanding = 1<<30;	132	static int max_outstanding = 1<<30;
85	static int respipe [2];	133	static int respipe [2];
86		134
		135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		137	#else
		138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		139	#endif
		140
87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
88	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
90		144
91	static volatile aio_req reqs, reqe; /* queue start, queue end */	145	/*
92	static volatile aio_req ress, rese; /* queue start, queue end */	146	* a somewhat faster data structure might be nice, but
		147	* with 8 priorities this actually needs <20 insns
		148	* per shift, the most expensive operation.
		149	*/
		150	typedef struct {
		151	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		152	int size;
		153	} reqq;
93		154
		155	static reqq req_queue;
		156	static reqq res_queue;
		157
		158	int reqq_push (reqq *q, aio_req req)
		159	{
		160	int pri = req->pri;
		161	req->next = 0;
		162
		163	if (q->qe[pri])
		164	{
		165	q->qe[pri]->next = req;
		166	q->qe[pri] = req;
		167	}
		168	else
		169	q->qe[pri] = q->qs[pri] = req;
		170
		171	return q->size++;
		172	}
		173
		174	aio_req reqq_shift (reqq *q)
		175	{
		176	int pri;
		177
		178	if (!q->size)
		179	return 0;
		180
		181	--q->size;
		182
		183	for (pri = NUM_PRI; pri--; )
		184	{
		185	aio_req req = q->qs[pri];
		186
		187	if (req)
		188	{
		189	if (!(q->qs[pri] = req->next))
		190	q->qe[pri] = 0;
		191
		192	return req;
		193	}
		194	}
		195
		196	abort ();
		197	}
		198
		199	static void req_invoke (aio_req req);
		200	static void req_free (aio_req req);
		201
		202	/* must be called at most once */
		203	static SV req_sv (aio_req req, const char klass)
		204	{
		205	if (!req->self)
		206	{
		207	req->self = (SV *)newHV ();
		208	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		209	}
		210
		211	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		212	}
		213
		214	static aio_req SvAIO_REQ (SV *sv)
		215	{
		216	MAGIC *mg;
		217
		218	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		219	croak ("object of class " AIO_REQ_KLASS " expected");
		220
		221	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		222
		223	return mg ? (aio_req)mg->mg_ptr : 0;
		224	}
		225
		226	static void aio_grp_feed (aio_req grp)
		227	{
		228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		229	{
		230	int old_len = grp->length;
		231
		232	if (grp->fh2 && SvOK (grp->fh2))
		233	{
		234	dSP;
		235
		236	ENTER;
		237	SAVETMPS;
		238	PUSHMARK (SP);
		239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		240	PUTBACK;
		241	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
		242	SPAGAIN;
		243	FREETMPS;
		244	LEAVE;
		245	}
		246
		247	/* stop if no progress has been made */
		248	if (old_len == grp->length)
		249	{
		250	SvREFCNT_dec (grp->fh2);
		251	grp->fh2 = 0;
		252	break;
		253	}
		254	}
		255	}
		256
		257	static void aio_grp_dec (aio_req grp)
		258	{
		259	--grp->length;
		260
		261	/* call feeder, if applicable */
		262	aio_grp_feed (grp);
		263
		264	/* finish, if done */
		265	if (!grp->length && grp->fd)
		266	{
		267	req_invoke (grp);
		268	req_free (grp);
		269	}
		270	}
		271
		272	static void poll_wait ()
		273	{
		274	fd_set rfd;
		275
		276	while (nreqs)
		277	{
		278	int size;
		279	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		280	pthread_mutex_lock (&reslock);
		281	#endif
		282	size = res_queue.size;
		283	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		284	pthread_mutex_unlock (&reslock);
		285	#endif
		286
		287	if (size)
		288	return;
		289
		290	FD_ZERO(&rfd);
		291	FD_SET(respipe [0], &rfd);
		292
		293	select (respipe [0] + 1, &rfd, 0, 0, 0);
		294	}
		295	}
		296
		297	static void req_invoke (aio_req req)
		298	{
		299	dSP;
		300
		301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		302	{
		303	errno = req->errorno;
		304
		305	ENTER;
		306	SAVETMPS;
		307	PUSHMARK (SP);
		308	EXTEND (SP, 1);
		309
		310	switch (req->type)
		311	{
		312	case REQ_READDIR:
		313	{
		314	SV *rv = &PL_sv_undef;
		315
		316	if (req->result >= 0)
		317	{
		318	char *buf = req->data2ptr;
		319	AV *av = newAV ();
		320
		321	while (req->result)
		322	{
		323	SV *sv = newSVpv (buf, 0);
		324
		325	av_push (av, sv);
		326	buf += SvCUR (sv) + 1;
		327	req->result--;
		328	}
		329
		330	rv = sv_2mortal (newRV_noinc ((SV *)av));
		331	}
		332
		333	PUSHs (rv);
		334	}
		335	break;
		336
		337	case REQ_OPEN:
		338	{
		339	/* convert fd to fh */
		340	SV *fh;
		341
		342	PUSHs (sv_2mortal (newSViv (req->result)));
		343	PUTBACK;
		344	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		345	SPAGAIN;
		346
		347	fh = SvREFCNT_inc (POPs);
		348
		349	PUSHMARK (SP);
		350	XPUSHs (sv_2mortal (fh));
		351	}
		352	break;
		353
		354	case REQ_GROUP:
		355	req->fd = 2; /* mark group as finished */
		356
		357	if (req->data)
		358	{
		359	int i;
		360	AV av = (AV )req->data;
		361
		362	EXTEND (SP, AvFILL (av) + 1);
		363	for (i = 0; i <= AvFILL (av); ++i)
		364	PUSHs (*av_fetch (av, i, 0));
		365	}
		366	break;
		367
		368	case REQ_NOP:
		369	case REQ_BUSY:
		370	break;
		371
		372	default:
		373	PUSHs (sv_2mortal (newSViv (req->result)));
		374	break;
		375	}
		376
		377
		378	PUTBACK;
		379	call_sv (req->callback, G_VOID \| G_EVAL);
		380	SPAGAIN;
		381
		382	FREETMPS;
		383	LEAVE;
		384	}
		385
		386	if (req->grp)
		387	{
		388	aio_req grp = req->grp;
		389
		390	/* unlink request */
		391	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		392	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		393
		394	if (grp->grp_first == req)
		395	grp->grp_first = req->grp_next;
		396
		397	aio_grp_dec (grp);
		398	}
		399
		400	if (SvTRUE (ERRSV))
		401	{
		402	req_free (req);
		403	croak (0);
		404	}
		405	}
		406
94	static void free_req (aio_req req)	407	static void req_free (aio_req req)
95	{	408	{
96	if (req->data)	409	if (req->self)
		410	{
		411	sv_unmagic (req->self, PERL_MAGIC_ext);
		412	SvREFCNT_dec (req->self);
		413	}
		414
97	SvREFCNT_dec (req->data);	415	SvREFCNT_dec (req->data);
98
99	if (req->fh)
100	SvREFCNT_dec (req->fh);	416	SvREFCNT_dec (req->fh);
101
102	if (req->fh2)
103	SvREFCNT_dec (req->fh2);	417	SvREFCNT_dec (req->fh2);
104
105	if (req->statdata)
106	Safefree (req->statdata);
107
108	if (req->callback)
109	SvREFCNT_dec (req->callback);	418	SvREFCNT_dec (req->callback);
		419	Safefree (req->statdata);
110		420
111	if (req->type == REQ_READDIR && req->result >= 0)	421	if (req->type == REQ_READDIR && req->result >= 0)
112	free (req->data2ptr);	422	free (req->data2ptr);
113		423
114	Safefree (req);	424	Safefree (req);
115	}	425	}
116		426
117	static void	427	static void req_cancel (aio_req req)
118	poll_wait ()
119	{	428	{
120	if (nreqs && !ress)	429	req->flags \|= FLAG_CANCELLED;
121	{
122	fd_set rfd;
123	FD_ZERO(&rfd);
124	FD_SET(respipe [0], &rfd);
125		430
126	select (respipe [0] + 1, &rfd, 0, 0, 0);	431	if (req->type == REQ_GROUP)
127	}	432	{
128	}	433	aio_req sub;
129		434
130	static int	435	for (sub = req->grp_first; sub; sub = sub->grp_next)
131	poll_cb ()	436	req_cancel (sub);
		437	}
		438	}
		439
		440	static int poll_cb ()
132	{	441	{
133	dSP;	442	dSP;
134	int count = 0;	443	int count = 0;
135	int do_croak = 0;	444	int do_croak = 0;
136	aio_req req;	445	aio_req req;
137		446
138	for (;;)	447	for (;;)
139	{	448	{
140	pthread_mutex_lock (&reslock);	449	pthread_mutex_lock (&reslock);
141	req = ress;	450	req = reqq_shift (&res_queue);
142		451
143	if (req)	452	if (req)
144	{	453	{
145	ress = req->next;
146
147	if (!ress)	454	if (!res_queue.size)
148	{	455	{
149	/* read any signals sent by the worker threads */	456	/* read any signals sent by the worker threads */
150	char buf [32];	457	char buf [32];
151	while (read (respipe [0], buf, 32) == 32)	458	while (read (respipe [0], buf, 32) == 32)
152	;	459	;
153
154	rese = 0;
155	}	460	}
156	}	461	}
157		462
158	pthread_mutex_unlock (&reslock);	463	pthread_mutex_unlock (&reslock);
159		464
160	if (!req)	465	if (!req)
161	break;	466	break;
162		467
163	nreqs--;	468	--nreqs;
164		469
165	if (req->type == REQ_QUIT)	470	if (req->type == REQ_QUIT)
166	started--;	471	started--;
		472	else if (req->type == REQ_GROUP && req->length)
		473	{
		474	req->fd = 1; /* mark request as delayed */
		475	continue;
		476	}
167	else	477	else
168	{	478	{
169	int errorno = errno;
170	errno = req->errorno;
171
172	if (req->type == REQ_READ)	479	if (req->type == REQ_READ)
173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
174		481
175	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	482	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
176	SvREADONLY_off (req->data);	483	SvREADONLY_off (req->data);
…		…
180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
181	PL_laststatval = req->result;	488	PL_laststatval = req->result;
182	PL_statcache = *(req->statdata);	489	PL_statcache = *(req->statdata);
183	}	490	}
184		491
185	ENTER;	492	req_invoke (req);
186	PUSHMARK (SP);
187		493
188	if (req->type == REQ_READDIR)
189	{
190	SV *rv = &PL_sv_undef;
191
192	if (req->result >= 0)
193	{
194	char *buf = req->data2ptr;
195	AV *av = newAV ();
196
197	while (req->result)
198	{
199	SV *sv = newSVpv (buf, 0);
200
201	av_push (av, sv);
202	buf += SvCUR (sv) + 1;
203	req->result--;
204	}
205
206	rv = sv_2mortal (newRV_noinc ((SV *)av));
207	}
208
209	XPUSHs (rv);
210	}
211	else
212	{
213	XPUSHs (sv_2mortal (newSViv (req->result)));
214
215	if (req->type == REQ_OPEN)
216	{
217	/* convert fd to fh */
218	SV *fh;
219
220	PUTBACK;
221	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
222	SPAGAIN;
223
224	fh = SvREFCNT_inc (POPs);
225
226	PUSHMARK (SP);
227	XPUSHs (sv_2mortal (fh));
228	}
229	}
230
231	if (SvOK (req->callback))
232	{
233	PUTBACK;
234	call_sv (req->callback, G_VOID \| G_EVAL);
235	SPAGAIN;
236
237	if (SvTRUE (ERRSV))
238	{
239	free_req (req);
240	croak (0);
241	}
242	}
243
244	LEAVE;
245
246	errno = errorno;
247	count++;	494	count++;
248	}	495	}
249		496
250	free_req (req);	497	req_free (req);
251	}	498	}
252		499
253	return count;	500	return count;
254	}	501	}
255		502
256	static void aio_proc(void arg);	503	static void aio_proc(void arg);
257		504
258	static void
259	start_thread (void)	505	static void start_thread (void)
260	{	506	{
261	sigset_t fullsigset, oldsigset;	507	sigset_t fullsigset, oldsigset;
262	pthread_t tid;	508	pthread_t tid;
263	pthread_attr_t attr;	509	pthread_attr_t attr;
264		510
…		…
273	started++;	519	started++;
274		520
275	sigprocmask (SIG_SETMASK, &oldsigset, 0);	521	sigprocmask (SIG_SETMASK, &oldsigset, 0);
276	}	522	}
277		523
278	static void	524	static void req_send (aio_req req)
279	send_req (aio_req req)
280	{	525	{
281	while (started < wanted && nreqs >= started)	526	while (started < wanted && nreqs >= started)
282	start_thread ();	527	start_thread ();
283		528
284	nreqs++;	529	++nreqs;
285		530
286	pthread_mutex_lock (&reqlock);	531	pthread_mutex_lock (&reqlock);
287		532	reqq_push (&req_queue, req);
288	req->next = 0;
289
290	if (reqe)
291	{
292	reqe->next = req;
293	reqe = req;
294	}
295	else
296	reqe = reqs = req;
297
298	pthread_cond_signal (&reqwait);	533	pthread_cond_signal (&reqwait);
299	pthread_mutex_unlock (&reqlock);	534	pthread_mutex_unlock (&reqlock);
300		535
301	if (nreqs > max_outstanding)	536	if (nreqs > max_outstanding)
302	for (;;)	537	for (;;)
…		…
308		543
309	poll_wait ();	544	poll_wait ();
310	}	545	}
311	}	546	}
312		547
313	static void	548	static void end_thread (void)
314	end_thread (void)
315	{	549	{
316	aio_req req;	550	aio_req req;
		551
317	Newz (0, req, 1, aio_cb);	552	Newz (0, req, 1, aio_cb);
		553
318	req->type = REQ_QUIT;	554	req->type = REQ_QUIT;
		555	req->pri = PRI_MAX + PRI_BIAS;
319		556
320	send_req (req);	557	req_send (req);
321	}	558	}
322		559
323	static void min_parallel (int nthreads)	560	static void min_parallel (int nthreads)
324	{	561	{
325	if (wanted < nthreads)	562	if (wanted < nthreads)
…		…
370	* normal read/write by using a mutex. slows down execution a lot,	607	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.	608	* but that's your problem, not mine.
372	*/	609	*/
373	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	610	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374		611
375	static ssize_t	612	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{	613	{
378	ssize_t res;	614	ssize_t res;
379	off_t ooffset;	615	off_t ooffset;
380		616
381	pthread_mutex_lock (&preadwritelock);	617	pthread_mutex_lock (&preadwritelock);
…		…
386	pthread_mutex_unlock (&preadwritelock);	622	pthread_mutex_unlock (&preadwritelock);
387		623
388	return res;	624	return res;
389	}	625	}
390		626
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)	627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393	{	628	{
394	ssize_t res;	629	ssize_t res;
395	off_t ooffset;	630	off_t ooffset;
396		631
397	pthread_mutex_lock (&preadwritelock);	632	pthread_mutex_lock (&preadwritelock);
…		…
410	#endif	645	#endif
411		646
412	#if !HAVE_READAHEAD	647	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	648	# define readahead aio_readahead
414		649
415	static ssize_t
416	readahead (int fd, off_t offset, size_t count)	650	static ssize_t readahead (int fd, off_t offset, size_t count)
417	{	651	{
418	char readahead_buf[4096];	652	dBUF;
419		653
420	while (count > 0)	654	while (count > 0)
421	{	655	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
423		657
424	pread (fd, readahead_buf, len, offset);	658	pread (fd, aio_buf, len, offset);
425	offset += len;	659	offset += len;
426	count -= len;	660	count -= len;
427	}	661	}
428		662
		663	fBUF;
		664
429	errno = 0;	665	errno = 0;
430	}	666	}
431	#endif	667	#endif
432		668
433	#if !HAVE_READDIR_R	669	#if !HAVE_READDIR_R
434	# define readdir_r aio_readdir_r	670	# define readdir_r aio_readdir_r
435		671
436	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
437		673
438	static int
439	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	674	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
440	{	675	{
441	struct dirent *e;	676	struct dirent *e;
442	int errorno;	677	int errorno;
443		678
444	pthread_mutex_lock (&readdirlock);	679	pthread_mutex_lock (&readdirlock);
…		…
460	return e ? 0 : -1;	695	return e ? 0 : -1;
461	}	696	}
462	#endif	697	#endif
463		698
464	/* sendfile always needs emulation */	699	/* sendfile always needs emulation */
465	static ssize_t
466	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	700	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
467	{	701	{
468	ssize_t res;	702	ssize_t res;
469		703
470	if (!count)	704	if (!count)
471	return 0;	705	return 0;
…		…
520	#endif	754	#endif
521	)	755	)
522	)	756	)
523	{	757	{
524	/* emulate sendfile. this is a major pain in the ass */	758	/* emulate sendfile. this is a major pain in the ass */
525	char buf[4096];	759	dBUF;
		760
526	res = 0;	761	res = 0;
527		762
528	while (count)	763	while (count)
529	{	764	{
530	ssize_t cnt;	765	ssize_t cnt;
531		766
532	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	767	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
533		768
534	if (cnt <= 0)	769	if (cnt <= 0)
535	{	770	{
536	if (cnt && !res) res = -1;	771	if (cnt && !res) res = -1;
537	break;	772	break;
538	}	773	}
539		774
540	cnt = write (ofd, buf, cnt);	775	cnt = write (ofd, aio_buf, cnt);
541		776
542	if (cnt <= 0)	777	if (cnt <= 0)
543	{	778	{
544	if (cnt && !res) res = -1;	779	if (cnt && !res) res = -1;
545	break;	780	break;
…		…
547		782
548	offset += cnt;	783	offset += cnt;
549	res += cnt;	784	res += cnt;
550	count -= cnt;	785	count -= cnt;
551	}	786	}
		787
		788	fBUF;
552	}	789	}
553		790
554	return res;	791	return res;
555	}	792	}
556		793
557	/* read a full directory */	794	/* read a full directory */
558	static int
559	scandir_ (const char path, void *namesp)	795	static int scandir_ (const char path, void *namesp)
560	{	796	{
561	DIR *dirp = opendir (path);	797	DIR *dirp;
562	union	798	union
563	{	799	{
564	struct dirent d;	800	struct dirent d;
565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	801	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
566	} u;	802	} *u;
567	struct dirent *entp;	803	struct dirent *entp;
568	char name, names;	804	char name, names;
569	int memlen = 4096;	805	int memlen = 4096;
570	int memofs = 0;	806	int memofs = 0;
571	int res = 0;	807	int res = 0;
572	int errorno;	808	int errorno;
573		809
		810	dirp = opendir (path);
574	if (!dirp)	811	if (!dirp)
575	return -1;	812	return -1;
576		813
		814	u = malloc (sizeof (*u));
577	names = malloc (memlen);	815	names = malloc (memlen);
578		816
		817	if (u && names)
579	for (;;)	818	for (;;)
580	{	819	{
		820	errno = 0;
581	errno = 0, readdir_r (dirp, &u.d, &entp);	821	readdir_r (dirp, &u->d, &entp);
582		822
583	if (!entp)	823	if (!entp)
584	break;	824	break;
585		825
586	name = entp->d_name;	826	name = entp->d_name;
587		827
588	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	828	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
589	{	829	{
590	int len = strlen (name) + 1;	830	int len = strlen (name) + 1;
591		831
592	res++;	832	res++;
593		833
594	while (memofs + len > memlen)	834	while (memofs + len > memlen)
595	{	835	{
596	memlen *= 2;	836	memlen *= 2;
597	names = realloc (names, memlen);	837	names = realloc (names, memlen);
598	if (!names)	838	if (!names)
599	break;	839	break;
600	}	840	}
601		841
602	memcpy (names + memofs, name, len);	842	memcpy (names + memofs, name, len);
603	memofs += len;	843	memofs += len;
604	}	844	}
605	}	845	}
606		846
607	errorno = errno;	847	errorno = errno;
		848	free (u);
608	closedir (dirp);	849	closedir (dirp);
609		850
610	if (errorno)	851	if (errorno)
611	{	852	{
612	free (names);	853	free (names);
…		…
618	return res;	859	return res;
619	}	860	}
620		861
621	/*****************************************************************************/	862	/*****************************************************************************/
622		863
623	static void *
624	aio_proc (void *thr_arg)	864	static void aio_proc (void thr_arg)
625	{	865	{
626	aio_req req;	866	aio_req req;
627	int type;	867	int type;
628		868
629	do	869	do
630	{	870	{
631	pthread_mutex_lock (&reqlock);	871	pthread_mutex_lock (&reqlock);
632		872
633	for (;;)	873	for (;;)
634	{	874	{
635	req = reqs;	875	req = reqq_shift (&req_queue);
636
637	if (reqs)
638	{
639	reqs = reqs->next;
640	if (!reqs) reqe = 0;
641	}
642		876
643	if (req)	877	if (req)
644	break;	878	break;
645		879
646	pthread_cond_wait (&reqwait, &reqlock);	880	pthread_cond_wait (&reqwait, &reqlock);
647	}	881	}
648		882
649	pthread_mutex_unlock (&reqlock);	883	pthread_mutex_unlock (&reqlock);
650		884
651	errno = 0; /* strictly unnecessary */	885	errno = 0; /* strictly unnecessary */
		886	type = req->type; /* remember type for QUIT check */
652		887
653	type = req->type;	888	if (!(req->flags & FLAG_CANCELLED))
654
655	switch (type)	889	switch (type)
656	{	890	{
657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
658	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
659		893
660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	895	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
662		896
663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
664	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
665	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
666		900
667	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	901	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
668	case REQ_CLOSE: req->result = close (req->fd); break;	902	case REQ_CLOSE: req->result = close (req->fd); break;
669	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
670	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
671	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
672	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
673	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
674		908
675	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
676	case REQ_FSYNC: req->result = fsync (req->fd); break;	910	case REQ_FSYNC: req->result = fsync (req->fd); break;
677	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
678		912
		913	case REQ_BUSY:
		914	{
		915	struct timeval tv;
		916
		917	tv.tv_sec = req->fd;
		918	tv.tv_usec = req->fd2;
		919
		920	req->result = select (0, 0, 0, 0, &tv);
		921	}
		922
		923	case REQ_GROUP:
		924	case REQ_NOP:
679	case REQ_QUIT:	925	case REQ_QUIT:
680	break;	926	break;
681		927
682	default:	928	default:
683	req->result = ENOSYS;	929	req->result = ENOSYS;
684	break;	930	break;
685	}	931	}
686		932
687	req->errorno = errno;	933	req->errorno = errno;
688		934
689	pthread_mutex_lock (&reslock);	935	pthread_mutex_lock (&reslock);
690		936
691	req->next = 0;	937	if (!reqq_push (&res_queue, req))
692
693	if (rese)
694	{
695	rese->next = req;
696	rese = req;
697	}
698	else
699	{
700	rese = ress = req;
701
702	/* write a dummy byte to the pipe so fh becomes ready */	938	/* write a dummy byte to the pipe so fh becomes ready */
703	write (respipe [1], &respipe, 1);	939	write (respipe [1], &respipe, 1);
704	}
705		940
706	pthread_mutex_unlock (&reslock);	941	pthread_mutex_unlock (&reslock);
707	}	942	}
708	while (type != REQ_QUIT);	943	while (type != REQ_QUIT);
709		944
…		…
740	{	975	{
741	aio_req prv;	976	aio_req prv;
742		977
743	started = 0;	978	started = 0;
744		979
745	while (reqs)	980	while (prv = reqq_shift (&req_queue))
746	{
747	prv = reqs;
748	reqs = prv->next;
749	free_req (prv);	981	req_free (prv);
750	}
751		982
752	reqs = reqe = 0;	983	while (prv = reqq_shift (&res_queue))
753
754	while (ress)
755	{
756	prv = ress;
757	ress = prv->next;
758	free_req (prv);	984	req_free (prv);
759	}	985
760
761	ress = rese = 0;
762
763	close (respipe [0]);	986	close (respipe [0]);
764	close (respipe [1]);	987	close (respipe [1]);
765	create_pipe ();	988	create_pipe ();
766		989
767	atfork_parent ();	990	atfork_parent ();
768	}	991	}
769		992
770	#define dREQ \	993	#define dREQ \
771	aio_req req; \	994	aio_req req; \
		995	int req_pri = next_pri; \
		996	next_pri = DEFAULT_PRI + PRI_BIAS; \
772	\	997	\
773	if (SvOK (callback) && !SvROK (callback)) \	998	if (SvOK (callback) && !SvROK (callback)) \
774	croak ("clalback must be undef or of reference type"); \	999	croak ("callback must be undef or of reference type"); \
775	\	1000	\
776	Newz (0, req, 1, aio_cb); \	1001	Newz (0, req, 1, aio_cb); \
777	if (!req) \	1002	if (!req) \
778	croak ("out of memory during aio_req allocation"); \	1003	croak ("out of memory during aio_req allocation"); \
779	\	1004	\
780	req->callback = newSVsv (callback);	1005	req->callback = newSVsv (callback); \
		1006	req->pri = req_pri
		1007
		1008	#define REQ_SEND \
		1009	req_send (req); \
		1010	\
		1011	if (GIMME_V != G_VOID) \
		1012	XPUSHs (req_sv (req, AIO_REQ_KLASS));
781		1013
782	MODULE = IO::AIO PACKAGE = IO::AIO	1014	MODULE = IO::AIO PACKAGE = IO::AIO
783		1015
784	PROTOTYPES: ENABLE	1016	PROTOTYPES: ENABLE
785		1017
…		…
817	SV * pathname	1049	SV * pathname
818	int flags	1050	int flags
819	int mode	1051	int mode
820	SV * callback	1052	SV * callback
821	PROTOTYPE: $$$;$	1053	PROTOTYPE: $$$;$
822	CODE:	1054	PPCODE:
823	{	1055	{
824	dREQ;	1056	dREQ;
825		1057
826	req->type = REQ_OPEN;	1058	req->type = REQ_OPEN;
827	req->data = newSVsv (pathname);	1059	req->data = newSVsv (pathname);
828	req->dataptr = SvPVbyte_nolen (req->data);	1060	req->dataptr = SvPVbyte_nolen (req->data);
829	req->fd = flags;	1061	req->fd = flags;
830	req->mode = mode;	1062	req->mode = mode;
831		1063
832	send_req (req);	1064	REQ_SEND;
833	}	1065	}
834		1066
835	void	1067	void
836	aio_close (fh,callback=&PL_sv_undef)	1068	aio_close (fh,callback=&PL_sv_undef)
837	SV * fh	1069	SV * fh
…		…
839	PROTOTYPE: $;$	1071	PROTOTYPE: $;$
840	ALIAS:	1072	ALIAS:
841	aio_close = REQ_CLOSE	1073	aio_close = REQ_CLOSE
842	aio_fsync = REQ_FSYNC	1074	aio_fsync = REQ_FSYNC
843	aio_fdatasync = REQ_FDATASYNC	1075	aio_fdatasync = REQ_FDATASYNC
844	CODE:	1076	PPCODE:
845	{	1077	{
846	dREQ;	1078	dREQ;
847		1079
848	req->type = ix;	1080	req->type = ix;
849	req->fh = newSVsv (fh);	1081	req->fh = newSVsv (fh);
850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
851		1083
852	send_req (req);	1084	REQ_SEND (req);
853	}	1085	}
854		1086
855	void	1087	void
856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
857	SV * fh	1089	SV * fh
…		…
862	SV * callback	1094	SV * callback
863	ALIAS:	1095	ALIAS:
864	aio_read = REQ_READ	1096	aio_read = REQ_READ
865	aio_write = REQ_WRITE	1097	aio_write = REQ_WRITE
866	PROTOTYPE: $$$$$;$	1098	PROTOTYPE: $$$$$;$
867	CODE:	1099	PPCODE:
868	{	1100	{
869	aio_req req;	1101	aio_req req;
870	STRLEN svlen;	1102	STRLEN svlen;
871	char *svptr = SvPVbyte (data, svlen);	1103	char *svptr = SvPVbyte (data, svlen);
872		1104
…		…
910	{	1142	{
911	SvREADONLY_on (data);	1143	SvREADONLY_on (data);
912	req->data2ptr = (void *)data;	1144	req->data2ptr = (void *)data;
913	}	1145	}
914		1146
915	send_req (req);	1147	REQ_SEND;
916	}	1148	}
917	}	1149	}
918		1150
919	void	1151	void
920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
…		…
922	SV * in_fh	1154	SV * in_fh
923	UV in_offset	1155	UV in_offset
924	UV length	1156	UV length
925	SV * callback	1157	SV * callback
926	PROTOTYPE: $$$$;$	1158	PROTOTYPE: $$$$;$
927	CODE:	1159	PPCODE:
928	{	1160	{
929	dREQ;	1161	dREQ;
930		1162
931	req->type = REQ_SENDFILE;	1163	req->type = REQ_SENDFILE;
932	req->fh = newSVsv (out_fh);	1164	req->fh = newSVsv (out_fh);
…		…
934	req->fh2 = newSVsv (in_fh);	1166	req->fh2 = newSVsv (in_fh);
935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936	req->offset = in_offset;	1168	req->offset = in_offset;
937	req->length = length;	1169	req->length = length;
938		1170
939	send_req (req);	1171	REQ_SEND;
940	}	1172	}
941		1173
942	void	1174	void
943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1175	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
944	SV * fh	1176	SV * fh
945	UV offset	1177	UV offset
946	IV length	1178	IV length
947	SV * callback	1179	SV * callback
948	PROTOTYPE: $$$;$	1180	PROTOTYPE: $$$;$
949	CODE:	1181	PPCODE:
950	{	1182	{
951	dREQ;	1183	dREQ;
952		1184
953	req->type = REQ_READAHEAD;	1185	req->type = REQ_READAHEAD;
954	req->fh = newSVsv (fh);	1186	req->fh = newSVsv (fh);
955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
956	req->offset = offset;	1188	req->offset = offset;
957	req->length = length;	1189	req->length = length;
958		1190
959	send_req (req);	1191	REQ_SEND;
960	}	1192	}
961		1193
962	void	1194	void
963	aio_stat (fh_or_path,callback=&PL_sv_undef)	1195	aio_stat (fh_or_path,callback=&PL_sv_undef)
964	SV * fh_or_path	1196	SV * fh_or_path
965	SV * callback	1197	SV * callback
966	ALIAS:	1198	ALIAS:
967	aio_stat = REQ_STAT	1199	aio_stat = REQ_STAT
968	aio_lstat = REQ_LSTAT	1200	aio_lstat = REQ_LSTAT
969	CODE:	1201	PPCODE:
970	{	1202	{
971	dREQ;	1203	dREQ;
972		1204
973	New (0, req->statdata, 1, Stat_t);	1205	New (0, req->statdata, 1, Stat_t);
974	if (!req->statdata)	1206	if (!req->statdata)
975	{	1207	{
976	free_req (req);	1208	req_free (req);
977	croak ("out of memory during aio_req->statdata allocation");	1209	croak ("out of memory during aio_req->statdata allocation");
978	}	1210	}
979		1211
980	if (SvPOK (fh_or_path))	1212	if (SvPOK (fh_or_path))
981	{	1213	{
…		…
988	req->type = REQ_FSTAT;	1220	req->type = REQ_FSTAT;
989	req->fh = newSVsv (fh_or_path);	1221	req->fh = newSVsv (fh_or_path);
990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
991	}	1223	}
992		1224
993	send_req (req);	1225	REQ_SEND;
994	}	1226	}
995		1227
996	void	1228	void
997	aio_unlink (pathname,callback=&PL_sv_undef)	1229	aio_unlink (pathname,callback=&PL_sv_undef)
998	SV * pathname	1230	SV * pathname
999	SV * callback	1231	SV * callback
1000	ALIAS:	1232	ALIAS:
1001	aio_unlink = REQ_UNLINK	1233	aio_unlink = REQ_UNLINK
1002	aio_rmdir = REQ_RMDIR	1234	aio_rmdir = REQ_RMDIR
1003	aio_readdir = REQ_READDIR	1235	aio_readdir = REQ_READDIR
1004	CODE:	1236	PPCODE:
1005	{	1237	{
1006	dREQ;	1238	dREQ;
1007		1239
1008	req->type = ix;	1240	req->type = ix;
1009	req->data = newSVsv (pathname);	1241	req->data = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	1242	req->dataptr = SvPVbyte_nolen (req->data);
1011		1243
1012	send_req (req);	1244	REQ_SEND;
1013	}	1245	}
1014		1246
1015	void	1247	void
1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1017	SV * oldpath	1249	SV * oldpath
…		…
1019	SV * callback	1251	SV * callback
1020	ALIAS:	1252	ALIAS:
1021	aio_link = REQ_LINK	1253	aio_link = REQ_LINK
1022	aio_symlink = REQ_SYMLINK	1254	aio_symlink = REQ_SYMLINK
1023	aio_rename = REQ_RENAME	1255	aio_rename = REQ_RENAME
1024	CODE:	1256	PPCODE:
1025	{	1257	{
1026	dREQ;	1258	dREQ;
1027		1259
1028	req->type = ix;	1260	req->type = ix;
1029	req->fh = newSVsv (oldpath);	1261	req->fh = newSVsv (oldpath);
1030	req->data2ptr = SvPVbyte_nolen (req->fh);	1262	req->data2ptr = SvPVbyte_nolen (req->fh);
1031	req->data = newSVsv (newpath);	1263	req->data = newSVsv (newpath);
1032	req->dataptr = SvPVbyte_nolen (req->data);	1264	req->dataptr = SvPVbyte_nolen (req->data);
1033		1265
1034	send_req (req);	1266	REQ_SEND;
1035	}	1267	}
1036		1268
1037	#if 0
1038
1039	# undocumented, because it does not cancel active requests
1040	void	1269	void
1041	cancel_most_requests ()	1270	aio_busy (delay,callback=&PL_sv_undef)
		1271	double delay
		1272	SV * callback
		1273	PPCODE:
		1274	{
		1275	dREQ;
		1276
		1277	req->type = REQ_BUSY;
		1278	req->fd = delay < 0. ? 0 : delay;
		1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1280
		1281	REQ_SEND;
		1282	}
		1283
		1284	void
		1285	aio_group (callback=&PL_sv_undef)
		1286	SV * callback
1042	PROTOTYPE:	1287	PROTOTYPE: ;$
1043	CODE:	1288	PPCODE:
1044	{	1289	{
1045	aio_req *req;	1290	dREQ;
1046		1291
1047	pthread_mutex_lock (&reqlock);	1292	req->type = REQ_GROUP;
1048	for (req = reqs; req; req = req->next)	1293	req_send (req);
1049	req->flags \|= 1;
1050	pthread_mutex_unlock (&reqlock);
1051		1294
1052	pthread_mutex_lock (&reslock);	1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1053	for (req = ress; req; req = req->next)
1054	req->flags \|= 1;
1055	pthread_mutex_unlock (&reslock);
1056	}	1296	}
1057		1297
1058	#endif	1298	void
		1299	aio_nop (callback=&PL_sv_undef)
		1300	SV * callback
		1301	PPCODE:
		1302	{
		1303	dREQ;
		1304
		1305	req->type = REQ_NOP;
		1306
		1307	REQ_SEND;
		1308	}
		1309
		1310	void
		1311	aioreq_pri (int pri = DEFAULT_PRI)
		1312	CODE:
		1313	if (pri < PRI_MIN) pri = PRI_MIN;
		1314	if (pri > PRI_MAX) pri = PRI_MAX;
		1315	next_pri = pri + PRI_BIAS;
		1316
		1317	void
		1318	aioreq_nice (int nice = 0)
		1319	CODE:
		1320	nice = next_pri - nice;
		1321	if (nice < PRI_MIN) nice = PRI_MIN;
		1322	if (nice > PRI_MAX) nice = PRI_MAX;
		1323	next_pri = nice + PRI_BIAS;
1059		1324
1060	void	1325	void
1061	flush ()	1326	flush ()
1062	PROTOTYPE:	1327	PROTOTYPE:
1063	CODE:	1328	CODE:
…		…
1106	CODE:	1371	CODE:
1107	RETVAL = nreqs;	1372	RETVAL = nreqs;
1108	OUTPUT:	1373	OUTPUT:
1109	RETVAL	1374	RETVAL
1110		1375
		1376	PROTOTYPES: DISABLE
		1377
		1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1379
		1380	void
		1381	cancel (aio_req_ornot req)
		1382	CODE:
		1383	req_cancel (req);
		1384
		1385	void
		1386	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1387	CODE:
		1388	SvREFCNT_dec (req->callback);
		1389	req->callback = newSVsv (callback);
		1390
		1391	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1392
		1393	void
		1394	add (aio_req grp, ...)
		1395	PPCODE:
		1396	{
		1397	int i;
		1398	aio_req req;
		1399
		1400	if (grp->fd == 2)
		1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1402
		1403	for (i = 1; i < items; ++i )
		1404	{
		1405	if (GIMME_V != G_VOID)
		1406	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1407
		1408	req = SvAIO_REQ (ST (i));
		1409
		1410	if (req)
		1411	{
		1412	++grp->length;
		1413	req->grp = grp;
		1414
		1415	req->grp_prev = 0;
		1416	req->grp_next = grp->grp_first;
		1417
		1418	if (grp->grp_first)
		1419	grp->grp_first->grp_prev = req;
		1420
		1421	grp->grp_first = req;
		1422	}
		1423	}
		1424	}
		1425
		1426	void
		1427	result (aio_req grp, ...)
		1428	CODE:
		1429	{
		1430	int i;
		1431	AV *av = newAV ();
		1432
		1433	for (i = 1; i < items; ++i )
		1434	av_push (av, newSVsv (ST (i)));
		1435
		1436	SvREFCNT_dec (grp->data);
		1437	grp->data = (SV *)av;
		1438	}
		1439
		1440	void
		1441	limit (aio_req grp, int limit)
		1442	CODE:
		1443	grp->fd2 = limit;
		1444	aio_grp_feed (grp);
		1445
		1446	void
		1447	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1448	CODE:
		1449	{
		1450	SvREFCNT_dec (grp->fh2);
		1451	grp->fh2 = newSVsv (callback);
		1452
		1453	if (grp->fd2 <= 0)
		1454	grp->fd2 = 2;
		1455
		1456	aio_grp_feed (grp);
		1457	}
		1458

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.42 by root, Fri Jul 21 07:35:31 2006 UTC vs. Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.42 by root, Fri Jul 21 07:35:31 2006 UTC vs.
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC