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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.40 by root, Sat Jun 24 16:27:02 2006 UTC vs.
Revision 1.68 by root, Tue Oct 24 03:40:25 2006 UTC

…		…
		1	#if __linux
		2	# define _GNU_SOURCE
		3	#endif
		4
1	#define _REENTRANT 1	5	#define _REENTRANT 1
		6
2	#include <errno.h>	7	#include <errno.h>
3		8
4	#include "EXTERN.h"	9	#include "EXTERN.h"
5	#include "perl.h"	10	#include "perl.h"
6	#include "XSUB.h"	11	#include "XSUB.h"
8	#include "autoconf/config.h"	13	#include "autoconf/config.h"
9		14
10	#include <pthread.h>	15	#include <pthread.h>
11		16
12	#include <stddef.h>	17	#include <stddef.h>
		18	#include <errno.h>
		19	#include <sys/time.h>
		20	#include <sys/select.h>
13	#include <sys/types.h>	21	#include <sys/types.h>
14	#include <sys/stat.h>	22	#include <sys/stat.h>
15	#include <limits.h>	23	#include <limits.h>
16	#include <unistd.h>	24	#include <unistd.h>
17	#include <fcntl.h>	25	#include <fcntl.h>
…		…
38	# define NAME_MAX 4096	46	# define NAME_MAX 4096
39	#endif	47	#endif
40		48
41	#if __ia64	49	#if __ia64
42	# define STACKSIZE 65536	50	# define STACKSIZE 65536
		51	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		52	# define STACKSIZE PTHREAD_STACK_MIN
43	#else	53	#else
44	# define STACKSIZE 8192	54	# define STACKSIZE 16384
45	#endif	55	#endif
		56
		57	/* buffer size for various temporary buffers */
		58	#define AIO_BUFSIZE 65536
		59
		60	#define dBUF \
		61	char *aio_buf = malloc (AIO_BUFSIZE); \
		62	if (!aio_buf) \
		63	return -1;
		64
		65	#define fBUF free (aio_buf)
46		66
47	enum {	67	enum {
48	REQ_QUIT,	68	REQ_QUIT,
49	REQ_OPEN, REQ_CLOSE,	69	REQ_OPEN, REQ_CLOSE,
50	REQ_READ, REQ_WRITE, REQ_READAHEAD,	70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
53	REQ_FSYNC, REQ_FDATASYNC,	73	REQ_FSYNC, REQ_FDATASYNC,
54	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
55	REQ_READDIR,	75	REQ_READDIR,
56	REQ_LINK, REQ_SYMLINK,	76	REQ_LINK, REQ_SYMLINK,
		77	REQ_GROUP, REQ_NOP,
		78	REQ_SLEEP,
57	};	79	};
58		80
		81	#define AIO_REQ_KLASS "IO::AIO::REQ"
		82	#define AIO_GRP_KLASS "IO::AIO::GRP"
		83
59	typedef struct aio_cb {	84	typedef struct aio_cb
		85	{
60	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
61		87
62	int type;	88	SV data, callback;
63		89	SV fh, fh2;
64	/* should receive a cleanup, with unions */	90	void dataptr, data2ptr;
65	int fd, fd2;	91	Stat_t *statdata;
66	off_t offset;	92	off_t offset;
67	size_t length;	93	size_t length;
68	ssize_t result;	94	ssize_t result;
		95
		96	STRLEN dataoffset;
		97	int type;
		98	int fd, fd2;
		99	int errorno;
69	mode_t mode; /* open */	100	mode_t mode; /* open */
70	int errorno;
71	SV data, callback;
72	SV fh, fh2;
73	void dataptr, data2ptr;
74	STRLEN dataoffset;
75		101
76	Stat_t *statdata;	102	unsigned char flags;
		103	unsigned char pri;
		104
		105	SV self; / the perl counterpart of this request, if any */
		106	struct aio_cb grp, grp_prev, grp_next, grp_first;
77	} aio_cb;	107	} aio_cb;
78		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
		112
79	typedef aio_cb *aio_req;	113	typedef aio_cb *aio_req;
		114	typedef aio_cb *aio_req_ornot;
		115
		116	enum {
		117	PRI_MIN = -4,
		118	PRI_MAX = 4,
		119
		120	DEFAULT_PRI = 0,
		121	PRI_BIAS = -PRI_MIN,
		122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		123	};
		124
		125	static int next_pri = DEFAULT_PRI + PRI_BIAS;
80		126
81	static int started, wanted;	127	static int started, wanted;
82	static volatile int nreqs;	128	static volatile int nreqs;
83	static int max_outstanding = 1<<30;	129	static int max_outstanding = 1<<30;
84	static int respipe [2];	130	static int respipe [2];
85		131
		132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		134	#else
		135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		136	#endif
		137
86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89		141
90	static volatile aio_req reqs, reqe; /* queue start, queue end */	142	/*
91	static volatile aio_req ress, rese; /* queue start, queue end */	143	* a somewhat faster data structure might be nice, but
		144	* with 8 priorities this actually needs <20 insns
		145	* per shift, the most expensive operation.
		146	*/
		147	typedef struct {
		148	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		149	int size;
		150	} reqq;
92		151
		152	static reqq req_queue;
		153	static reqq res_queue;
		154
		155	int reqq_push (reqq *q, aio_req req)
		156	{
		157	int pri = req->pri;
		158	req->next = 0;
		159
		160	if (q->qe[pri])
		161	{
		162	q->qe[pri]->next = req;
		163	q->qe[pri] = req;
		164	}
		165	else
		166	q->qe[pri] = q->qs[pri] = req;
		167
		168	return q->size++;
		169	}
		170
		171	aio_req reqq_shift (reqq *q)
		172	{
		173	int pri;
		174
		175	if (!q->size)
		176	return 0;
		177
		178	--q->size;
		179
		180	for (pri = NUM_PRI; pri--; )
		181	{
		182	aio_req req = q->qs[pri];
		183
		184	if (req)
		185	{
		186	if (!(q->qs[pri] = req->next))
		187	q->qe[pri] = 0;
		188
		189	return req;
		190	}
		191	}
		192
		193	abort ();
		194	}
		195
		196	static void req_invoke (aio_req req);
		197	static void req_free (aio_req req);
		198
		199	/* must be called at most once */
		200	static SV req_sv (aio_req req, const char klass)
		201	{
		202	if (!req->self)
		203	{
		204	req->self = (SV *)newHV ();
		205	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		206	}
		207
		208	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		209	}
		210
		211	static aio_req SvAIO_REQ (SV *sv)
		212	{
		213	MAGIC *mg;
		214
		215	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))
		216	croak ("object of class " AIO_REQ_KLASS " expected");
		217
		218	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		219
		220	return mg ? (aio_req)mg->mg_ptr : 0;
		221	}
		222
		223	static void aio_grp_feed (aio_req grp)
		224	{
		225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		226	{
		227	int old_len = grp->length;
		228
		229	if (grp->fh2 && SvOK (grp->fh2))
		230	{
		231	dSP;
		232
		233	ENTER;
		234	SAVETMPS;
		235	PUSHMARK (SP);
		236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		237	PUTBACK;
		238	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);
		239	SPAGAIN;
		240	FREETMPS;
		241	LEAVE;
		242	}
		243
		244	/* stop if no progress has been made */
		245	if (old_len == grp->length)
		246	{
		247	SvREFCNT_dec (grp->fh2);
		248	grp->fh2 = 0;
		249	break;
		250	}
		251	}
		252	}
		253
		254	static void aio_grp_dec (aio_req grp)
		255	{
		256	--grp->length;
		257
		258	/* call feeder, if applicable */
		259	aio_grp_feed (grp);
		260
		261	/* finish, if done */
		262	if (!grp->length && grp->fd)
		263	{
		264	req_invoke (grp);
		265	req_free (grp);
		266	}
		267	}
		268
		269	static void poll_wait ()
		270	{
		271	fd_set rfd;
		272
		273	while (nreqs)
		274	{
		275	int size;
		276	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		277	pthread_mutex_lock (&reslock);
		278	#endif
		279	size = res_queue.size;
		280	#if !(__i386 \|\| __x86_64) /* safe without sempahore on this archs */
		281	pthread_mutex_unlock (&reslock);
		282	#endif
		283
		284	if (size)
		285	return;
		286
		287	FD_ZERO(&rfd);
		288	FD_SET(respipe [0], &rfd);
		289
		290	select (respipe [0] + 1, &rfd, 0, 0, 0);
		291	}
		292	}
		293
		294	static void req_invoke (aio_req req)
		295	{
		296	dSP;
		297
		298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		299	{
		300	errno = req->errorno;
		301
		302	ENTER;
		303	SAVETMPS;
		304	PUSHMARK (SP);
		305	EXTEND (SP, 1);
		306
		307	switch (req->type)
		308	{
		309	case REQ_READDIR:
		310	{
		311	SV *rv = &PL_sv_undef;
		312
		313	if (req->result >= 0)
		314	{
		315	char *buf = req->data2ptr;
		316	AV *av = newAV ();
		317
		318	while (req->result)
		319	{
		320	SV *sv = newSVpv (buf, 0);
		321
		322	av_push (av, sv);
		323	buf += SvCUR (sv) + 1;
		324	req->result--;
		325	}
		326
		327	rv = sv_2mortal (newRV_noinc ((SV *)av));
		328	}
		329
		330	PUSHs (rv);
		331	}
		332	break;
		333
		334	case REQ_OPEN:
		335	{
		336	/* convert fd to fh */
		337	SV *fh;
		338
		339	PUSHs (sv_2mortal (newSViv (req->result)));
		340	PUTBACK;
		341	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
		342	SPAGAIN;
		343
		344	fh = SvREFCNT_inc (POPs);
		345
		346	PUSHMARK (SP);
		347	XPUSHs (sv_2mortal (fh));
		348	}
		349	break;
		350
		351	case REQ_GROUP:
		352	req->fd = 2; /* mark group as finished */
		353
		354	if (req->data)
		355	{
		356	int i;
		357	AV av = (AV )req->data;
		358
		359	EXTEND (SP, AvFILL (av) + 1);
		360	for (i = 0; i <= AvFILL (av); ++i)
		361	PUSHs (*av_fetch (av, i, 0));
		362	}
		363	break;
		364
		365	case REQ_NOP:
		366	case REQ_SLEEP:
		367	break;
		368
		369	default:
		370	PUSHs (sv_2mortal (newSViv (req->result)));
		371	break;
		372	}
		373
		374
		375	PUTBACK;
		376	call_sv (req->callback, G_VOID \| G_EVAL);
		377	SPAGAIN;
		378
		379	FREETMPS;
		380	LEAVE;
		381	}
		382
		383	if (req->grp)
		384	{
		385	aio_req grp = req->grp;
		386
		387	/* unlink request */
		388	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		389	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		390
		391	if (grp->grp_first == req)
		392	grp->grp_first = req->grp_next;
		393
		394	aio_grp_dec (grp);
		395	}
		396
		397	if (SvTRUE (ERRSV))
		398	{
		399	req_free (req);
		400	croak (0);
		401	}
		402	}
		403
93	static void free_req (aio_req req)	404	static void req_free (aio_req req)
94	{	405	{
95	if (req->data)	406	if (req->self)
		407	{
		408	sv_unmagic (req->self, PERL_MAGIC_ext);
		409	SvREFCNT_dec (req->self);
		410	}
		411
96	SvREFCNT_dec (req->data);	412	SvREFCNT_dec (req->data);
97
98	if (req->fh)
99	SvREFCNT_dec (req->fh);	413	SvREFCNT_dec (req->fh);
100
101	if (req->fh2)
102	SvREFCNT_dec (req->fh2);	414	SvREFCNT_dec (req->fh2);
103
104	if (req->statdata)
105	Safefree (req->statdata);
106
107	if (req->callback)
108	SvREFCNT_dec (req->callback);	415	SvREFCNT_dec (req->callback);
		416	Safefree (req->statdata);
109		417
110	if (req->type == REQ_READDIR && req->result >= 0)	418	if (req->type == REQ_READDIR && req->result >= 0)
111	free (req->data2ptr);	419	free (req->data2ptr);
112		420
113	Safefree (req);	421	Safefree (req);
114	}	422	}
115		423
116	static void	424	static void req_cancel (aio_req req)
117	poll_wait ()
118	{	425	{
119	if (nreqs && !ress)	426	req->flags \|= FLAG_CANCELLED;
120	{
121	fd_set rfd;
122	FD_ZERO(&rfd);
123	FD_SET(respipe [0], &rfd);
124		427
125	select (respipe [0] + 1, &rfd, 0, 0, 0);	428	if (req->type == REQ_GROUP)
126	}	429	{
127	}	430	aio_req sub;
128		431
129	static int	432	for (sub = req->grp_first; sub; sub = sub->grp_next)
130	poll_cb ()	433	req_cancel (sub);
		434	}
		435	}
		436
		437	static int poll_cb ()
131	{	438	{
132	dSP;	439	dSP;
133	int count = 0;	440	int count = 0;
134	int do_croak = 0;	441	int do_croak = 0;
135	aio_req req;	442	aio_req req;
136		443
137	for (;;)	444	for (;;)
138	{	445	{
139	pthread_mutex_lock (&reslock);	446	pthread_mutex_lock (&reslock);
140	req = ress;	447	req = reqq_shift (&res_queue);
141		448
142	if (req)	449	if (req)
143	{	450	{
144	ress = req->next;
145
146	if (!ress)	451	if (!res_queue.size)
147	{	452	{
148	/* read any signals sent by the worker threads */	453	/* read any signals sent by the worker threads */
149	char buf [32];	454	char buf [32];
150	while (read (respipe [0], buf, 32) == 32)	455	while (read (respipe [0], buf, 32) == 32)
151	;	456	;
152
153	rese = 0;
154	}	457	}
155	}	458	}
156		459
157	pthread_mutex_unlock (&reslock);	460	pthread_mutex_unlock (&reslock);
158		461
159	if (!req)	462	if (!req)
160	break;	463	break;
161		464
162	nreqs--;	465	--nreqs;
163		466
164	if (req->type == REQ_QUIT)	467	if (req->type == REQ_QUIT)
165	started--;	468	started--;
		469	else if (req->type == REQ_GROUP && req->length)
		470	{
		471	req->fd = 1; /* mark request as delayed */
		472	continue;
		473	}
166	else	474	else
167	{	475	{
168	int errorno = errno;
169	errno = req->errorno;
170
171	if (req->type == REQ_READ)	476	if (req->type == REQ_READ)
172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
173		478
174	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	479	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
175	SvREADONLY_off (req->data);	480	SvREADONLY_off (req->data);
…		…
179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
180	PL_laststatval = req->result;	485	PL_laststatval = req->result;
181	PL_statcache = *(req->statdata);	486	PL_statcache = *(req->statdata);
182	}	487	}
183		488
184	ENTER;	489	req_invoke (req);
185	PUSHMARK (SP);
186		490
187	if (req->type == REQ_READDIR)
188	{
189	SV *rv = &PL_sv_undef;
190
191	if (req->result >= 0)
192	{
193	char *buf = req->data2ptr;
194	AV *av = newAV ();
195
196	while (req->result)
197	{
198	SV *sv = newSVpv (buf, 0);
199
200	av_push (av, sv);
201	buf += SvCUR (sv) + 1;
202	req->result--;
203	}
204
205	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}
207
208	XPUSHs (rv);
209	}
210	else
211	{
212	XPUSHs (sv_2mortal (newSViv (req->result)));
213
214	if (req->type == REQ_OPEN)
215	{
216	/* convert fd to fh */
217	SV *fh;
218
219	PUTBACK;
220	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
221	SPAGAIN;
222
223	fh = SvREFCNT_inc (POPs);
224
225	PUSHMARK (SP);
226	XPUSHs (sv_2mortal (fh));
227	}
228	}
229
230	if (SvOK (req->callback))
231	{
232	PUTBACK;
233	call_sv (req->callback, G_VOID \| G_EVAL);
234	SPAGAIN;
235
236	if (SvTRUE (ERRSV))
237	{
238	free_req (req);
239	croak (0);
240	}
241	}
242
243	LEAVE;
244
245	errno = errorno;
246	count++;	491	count++;
247	}	492	}
248		493
249	free_req (req);	494	req_free (req);
250	}	495	}
251		496
252	return count;	497	return count;
253	}	498	}
254		499
255	static void aio_proc(void arg);	500	static void aio_proc(void arg);
256		501
257	static void
258	start_thread (void)	502	static void start_thread (void)
259	{	503	{
260	sigset_t fullsigset, oldsigset;	504	sigset_t fullsigset, oldsigset;
261	pthread_t tid;	505	pthread_t tid;
262	pthread_attr_t attr;	506	pthread_attr_t attr;
263		507
…		…
272	started++;	516	started++;
273		517
274	sigprocmask (SIG_SETMASK, &oldsigset, 0);	518	sigprocmask (SIG_SETMASK, &oldsigset, 0);
275	}	519	}
276		520
277	static void	521	static void req_send (aio_req req)
278	send_req (aio_req req)
279	{	522	{
280	while (started < wanted && nreqs >= started)	523	while (started < wanted && nreqs >= started)
281	start_thread ();	524	start_thread ();
282		525
283	nreqs++;	526	++nreqs;
284		527
285	pthread_mutex_lock (&reqlock);	528	pthread_mutex_lock (&reqlock);
286		529	reqq_push (&req_queue, req);
287	req->next = 0;
288
289	if (reqe)
290	{
291	reqe->next = req;
292	reqe = req;
293	}
294	else
295	reqe = reqs = req;
296
297	pthread_cond_signal (&reqwait);	530	pthread_cond_signal (&reqwait);
298	pthread_mutex_unlock (&reqlock);	531	pthread_mutex_unlock (&reqlock);
299		532
300	if (nreqs > max_outstanding)	533	if (nreqs > max_outstanding)
301	for (;;)	534	for (;;)
…		…
307		540
308	poll_wait ();	541	poll_wait ();
309	}	542	}
310	}	543	}
311		544
312	static void	545	static void end_thread (void)
313	end_thread (void)
314	{	546	{
315	aio_req req;	547	aio_req req;
		548
316	Newz (0, req, 1, aio_cb);	549	Newz (0, req, 1, aio_cb);
		550
317	req->type = REQ_QUIT;	551	req->type = REQ_QUIT;
		552	req->pri = PRI_MAX + PRI_BIAS;
318		553
319	send_req (req);	554	req_send (req);
320	}	555	}
321		556
322	static void min_parallel (int nthreads)	557	static void min_parallel (int nthreads)
323	{	558	{
324	if (wanted < nthreads)	559	if (wanted < nthreads)
…		…
369	* normal read/write by using a mutex. slows down execution a lot,	604	* normal read/write by using a mutex. slows down execution a lot,
370	* but that's your problem, not mine.	605	* but that's your problem, not mine.
371	*/	606	*/
372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373		608
374	static ssize_t	609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
375	pread (int fd, void *buf, size_t count, off_t offset)
376	{	610	{
377	ssize_t res;	611	ssize_t res;
378	off_t ooffset;	612	off_t ooffset;
379		613
380	pthread_mutex_lock (&preadwritelock);	614	pthread_mutex_lock (&preadwritelock);
…		…
385	pthread_mutex_unlock (&preadwritelock);	619	pthread_mutex_unlock (&preadwritelock);
386		620
387	return res;	621	return res;
388	}	622	}
389		623
390	static ssize_t
391	pwrite (int fd, void *buf, size_t count, off_t offset)	624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
392	{	625	{
393	ssize_t res;	626	ssize_t res;
394	off_t ooffset;	627	off_t ooffset;
395		628
396	pthread_mutex_lock (&preadwritelock);	629	pthread_mutex_lock (&preadwritelock);
…		…
409	#endif	642	#endif
410		643
411	#if !HAVE_READAHEAD	644	#if !HAVE_READAHEAD
412	# define readahead aio_readahead	645	# define readahead aio_readahead
413		646
414	static ssize_t
415	readahead (int fd, off_t offset, size_t count)	647	static ssize_t readahead (int fd, off_t offset, size_t count)
416	{	648	{
417	char readahead_buf[4096];	649	dBUF;
418		650
419	while (count > 0)	651	while (count > 0)
420	{	652	{
421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
422		654
423	pread (fd, readahead_buf, len, offset);	655	pread (fd, aio_buf, len, offset);
424	offset += len;	656	offset += len;
425	count -= len;	657	count -= len;
426	}	658	}
427		659
		660	fBUF;
		661
428	errno = 0;	662	errno = 0;
429	}	663	}
430	#endif	664	#endif
431		665
432	#if !HAVE_READDIR_R	666	#if !HAVE_READDIR_R
433	# define readdir_r aio_readdir_r	667	# define readdir_r aio_readdir_r
434		668
435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436		670
437	static int
438	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	671	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
439	{	672	{
440	struct dirent *e;	673	struct dirent *e;
441	int errorno;	674	int errorno;
442		675
443	pthread_mutex_lock (&readdirlock);	676	pthread_mutex_lock (&readdirlock);
…		…
459	return e ? 0 : -1;	692	return e ? 0 : -1;
460	}	693	}
461	#endif	694	#endif
462		695
463	/* sendfile always needs emulation */	696	/* sendfile always needs emulation */
464	static ssize_t
465	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
466	{	698	{
467	ssize_t res;	699	ssize_t res;
468		700
469	if (!count)	701	if (!count)
470	return 0;	702	return 0;
…		…
519	#endif	751	#endif
520	)	752	)
521	)	753	)
522	{	754	{
523	/* emulate sendfile. this is a major pain in the ass */	755	/* emulate sendfile. this is a major pain in the ass */
524	char buf[4096];	756	dBUF;
		757
525	res = 0;	758	res = 0;
526		759
527	while (count)	760	while (count)
528	{	761	{
529	ssize_t cnt;	762	ssize_t cnt;
530		763
531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	764	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
532		765
533	if (cnt <= 0)	766	if (cnt <= 0)
534	{	767	{
535	if (cnt && !res) res = -1;	768	if (cnt && !res) res = -1;
536	break;	769	break;
537	}	770	}
538		771
539	cnt = write (ofd, buf, cnt);	772	cnt = write (ofd, aio_buf, cnt);
540		773
541	if (cnt <= 0)	774	if (cnt <= 0)
542	{	775	{
543	if (cnt && !res) res = -1;	776	if (cnt && !res) res = -1;
544	break;	777	break;
…		…
546		779
547	offset += cnt;	780	offset += cnt;
548	res += cnt;	781	res += cnt;
549	count -= cnt;	782	count -= cnt;
550	}	783	}
		784
		785	fBUF;
551	}	786	}
552		787
553	return res;	788	return res;
554	}	789	}
555		790
556	/* read a full directory */	791	/* read a full directory */
557	static int
558	scandir_ (const char path, void *namesp)	792	static int scandir_ (const char path, void *namesp)
559	{	793	{
560	DIR *dirp = opendir (path);	794	DIR *dirp;
561	union	795	union
562	{	796	{
563	struct dirent d;	797	struct dirent d;
564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565	} u;	799	} *u;
566	struct dirent *entp;	800	struct dirent *entp;
567	char name, names;	801	char name, names;
568	int memlen = 4096;	802	int memlen = 4096;
569	int memofs = 0;	803	int memofs = 0;
570	int res = 0;	804	int res = 0;
571	int errorno;	805	int errorno;
572		806
		807	dirp = opendir (path);
573	if (!dirp)	808	if (!dirp)
574	return -1;	809	return -1;
575		810
		811	u = malloc (sizeof (*u));
576	names = malloc (memlen);	812	names = malloc (memlen);
577		813
		814	if (u && names)
578	for (;;)	815	for (;;)
579	{	816	{
		817	errno = 0;
580	errno = 0, readdir_r (dirp, &u.d, &entp);	818	readdir_r (dirp, &u->d, &entp);
581		819
582	if (!entp)	820	if (!entp)
583	break;	821	break;
584		822
585	name = entp->d_name;	823	name = entp->d_name;
586		824
587	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	825	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
588	{	826	{
589	int len = strlen (name) + 1;	827	int len = strlen (name) + 1;
590		828
591	res++;	829	res++;
592		830
593	while (memofs + len > memlen)	831	while (memofs + len > memlen)
594	{	832	{
595	memlen *= 2;	833	memlen *= 2;
596	names = realloc (names, memlen);	834	names = realloc (names, memlen);
597	if (!names)	835	if (!names)
598	break;	836	break;
599	}	837	}
600		838
601	memcpy (names + memofs, name, len);	839	memcpy (names + memofs, name, len);
602	memofs += len;	840	memofs += len;
603	}	841	}
604	}	842	}
605		843
606	errorno = errno;	844	errorno = errno;
		845	free (u);
607	closedir (dirp);	846	closedir (dirp);
608		847
609	if (errorno)	848	if (errorno)
610	{	849	{
611	free (names);	850	free (names);
…		…
617	return res;	856	return res;
618	}	857	}
619		858
620	/*****************************************************************************/	859	/*****************************************************************************/
621		860
622	static void *
623	aio_proc (void *thr_arg)	861	static void aio_proc (void thr_arg)
624	{	862	{
625	aio_req req;	863	aio_req req;
626	int type;	864	int type;
627		865
628	do	866	do
629	{	867	{
630	pthread_mutex_lock (&reqlock);	868	pthread_mutex_lock (&reqlock);
631		869
632	for (;;)	870	for (;;)
633	{	871	{
634	req = reqs;	872	req = reqq_shift (&req_queue);
635
636	if (reqs)
637	{
638	reqs = reqs->next;
639	if (!reqs) reqe = 0;
640	}
641		873
642	if (req)	874	if (req)
643	break;	875	break;
644		876
645	pthread_cond_wait (&reqwait, &reqlock);	877	pthread_cond_wait (&reqwait, &reqlock);
646	}	878	}
647		879
648	pthread_mutex_unlock (&reqlock);	880	pthread_mutex_unlock (&reqlock);
649		881
650	errno = 0; /* strictly unnecessary */	882	errno = 0; /* strictly unnecessary */
		883	type = req->type; /* remember type for QUIT check */
651		884
652	type = req->type;	885	if (!(req->flags & FLAG_CANCELLED))
653
654	switch (type)	886	switch (type)
655	{	887	{
656	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
658		890
659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	892	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
661		893
662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665		897
666	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
667	case REQ_CLOSE: req->result = close (req->fd); break;	899	case REQ_CLOSE: req->result = close (req->fd); break;
668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
670	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
671	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
672	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
673		905
674	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
675	case REQ_FSYNC: req->result = fsync (req->fd); break;	907	case REQ_FSYNC: req->result = fsync (req->fd); break;
676	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
677		909
		910	case REQ_SLEEP:
		911	{
		912	struct timeval tv;
		913
		914	tv.tv_sec = req->fd;
		915	tv.tv_usec = req->fd2;
		916
		917	req->result = select (0, 0, 0, 0, &tv);
		918	}
		919
		920	case REQ_GROUP:
		921	case REQ_NOP:
678	case REQ_QUIT:	922	case REQ_QUIT:
679	break;	923	break;
680		924
681	default:	925	default:
682	req->result = ENOSYS;	926	req->result = ENOSYS;
683	break;	927	break;
684	}	928	}
685		929
686	req->errorno = errno;	930	req->errorno = errno;
687		931
688	pthread_mutex_lock (&reslock);	932	pthread_mutex_lock (&reslock);
689		933
690	req->next = 0;	934	if (!reqq_push (&res_queue, req))
691
692	if (rese)
693	{
694	rese->next = req;
695	rese = req;
696	}
697	else
698	{
699	rese = ress = req;
700
701	/* write a dummy byte to the pipe so fh becomes ready */	935	/* write a dummy byte to the pipe so fh becomes ready */
702	write (respipe [1], &respipe, 1);	936	write (respipe [1], &respipe, 1);
703	}
704		937
705	pthread_mutex_unlock (&reslock);	938	pthread_mutex_unlock (&reslock);
706	}	939	}
707	while (type != REQ_QUIT);	940	while (type != REQ_QUIT);
708		941
…		…
739	{	972	{
740	aio_req prv;	973	aio_req prv;
741		974
742	started = 0;	975	started = 0;
743		976
744	while (reqs)	977	while (prv = reqq_shift (&req_queue))
745	{
746	prv = reqs;
747	reqs = prv->next;
748	free_req (prv);	978	req_free (prv);
749	}
750		979
751	reqs = reqe = 0;	980	while (prv = reqq_shift (&res_queue))
752
753	while (ress)
754	{
755	prv = ress;
756	ress = prv->next;
757	free_req (prv);	981	req_free (prv);
758	}	982
759
760	ress = rese = 0;
761
762	close (respipe [0]);	983	close (respipe [0]);
763	close (respipe [1]);	984	close (respipe [1]);
764	create_pipe ();	985	create_pipe ();
765		986
766	atfork_parent ();	987	atfork_parent ();
767	}	988	}
768		989
769	#define dREQ \	990	#define dREQ \
770	aio_req req; \	991	aio_req req; \
		992	int req_pri = next_pri; \
		993	next_pri = DEFAULT_PRI + PRI_BIAS; \
771	\	994	\
772	if (SvOK (callback) && !SvROK (callback)) \	995	if (SvOK (callback) && !SvROK (callback)) \
773	croak ("clalback must be undef or of reference type"); \	996	croak ("callback must be undef or of reference type"); \
774	\	997	\
775	Newz (0, req, 1, aio_cb); \	998	Newz (0, req, 1, aio_cb); \
776	if (!req) \	999	if (!req) \
777	croak ("out of memory during aio_req allocation"); \	1000	croak ("out of memory during aio_req allocation"); \
778	\	1001	\
779	req->callback = newSVsv (callback);	1002	req->callback = newSVsv (callback); \
		1003	req->pri = req_pri
		1004
		1005	#define REQ_SEND \
		1006	req_send (req); \
		1007	\
		1008	if (GIMME_V != G_VOID) \
		1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));
780		1010
781	MODULE = IO::AIO PACKAGE = IO::AIO	1011	MODULE = IO::AIO PACKAGE = IO::AIO
782		1012
783	PROTOTYPES: ENABLE	1013	PROTOTYPES: ENABLE
784		1014
785	BOOT:	1015	BOOT:
786	{	1016	{
		1017	HV *stash = gv_stashpv ("IO::AIO", 1);
		1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1021
787	create_pipe ();	1022	create_pipe ();
788	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
789	}	1024	}
790		1025
791	void	1026	void
…		…
811	SV * pathname	1046	SV * pathname
812	int flags	1047	int flags
813	int mode	1048	int mode
814	SV * callback	1049	SV * callback
815	PROTOTYPE: $$$;$	1050	PROTOTYPE: $$$;$
816	CODE:	1051	PPCODE:
817	{	1052	{
818	dREQ;	1053	dREQ;
819		1054
820	req->type = REQ_OPEN;	1055	req->type = REQ_OPEN;
821	req->data = newSVsv (pathname);	1056	req->data = newSVsv (pathname);
822	req->dataptr = SvPVbyte_nolen (req->data);	1057	req->dataptr = SvPVbyte_nolen (req->data);
823	req->fd = flags;	1058	req->fd = flags;
824	req->mode = mode;	1059	req->mode = mode;
825		1060
826	send_req (req);	1061	REQ_SEND;
827	}	1062	}
828		1063
829	void	1064	void
830	aio_close (fh,callback=&PL_sv_undef)	1065	aio_close (fh,callback=&PL_sv_undef)
831	SV * fh	1066	SV * fh
…		…
833	PROTOTYPE: $;$	1068	PROTOTYPE: $;$
834	ALIAS:	1069	ALIAS:
835	aio_close = REQ_CLOSE	1070	aio_close = REQ_CLOSE
836	aio_fsync = REQ_FSYNC	1071	aio_fsync = REQ_FSYNC
837	aio_fdatasync = REQ_FDATASYNC	1072	aio_fdatasync = REQ_FDATASYNC
838	CODE:	1073	PPCODE:
839	{	1074	{
840	dREQ;	1075	dREQ;
841		1076
842	req->type = ix;	1077	req->type = ix;
843	req->fh = newSVsv (fh);	1078	req->fh = newSVsv (fh);
844	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
845		1080
846	send_req (req);	1081	REQ_SEND (req);
847	}	1082	}
848		1083
849	void	1084	void
850	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
851	SV * fh	1086	SV * fh
…		…
856	SV * callback	1091	SV * callback
857	ALIAS:	1092	ALIAS:
858	aio_read = REQ_READ	1093	aio_read = REQ_READ
859	aio_write = REQ_WRITE	1094	aio_write = REQ_WRITE
860	PROTOTYPE: $$$$$;$	1095	PROTOTYPE: $$$$$;$
861	CODE:	1096	PPCODE:
862	{	1097	{
863	aio_req req;	1098	aio_req req;
864	STRLEN svlen;	1099	STRLEN svlen;
865	char *svptr = SvPVbyte (data, svlen);	1100	char *svptr = SvPVbyte (data, svlen);
866		1101
…		…
904	{	1139	{
905	SvREADONLY_on (data);	1140	SvREADONLY_on (data);
906	req->data2ptr = (void *)data;	1141	req->data2ptr = (void *)data;
907	}	1142	}
908		1143
909	send_req (req);	1144	REQ_SEND;
910	}	1145	}
911	}	1146	}
912		1147
913	void	1148	void
914	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
…		…
916	SV * in_fh	1151	SV * in_fh
917	UV in_offset	1152	UV in_offset
918	UV length	1153	UV length
919	SV * callback	1154	SV * callback
920	PROTOTYPE: $$$$;$	1155	PROTOTYPE: $$$$;$
921	CODE:	1156	PPCODE:
922	{	1157	{
923	dREQ;	1158	dREQ;
924		1159
925	req->type = REQ_SENDFILE;	1160	req->type = REQ_SENDFILE;
926	req->fh = newSVsv (out_fh);	1161	req->fh = newSVsv (out_fh);
…		…
928	req->fh2 = newSVsv (in_fh);	1163	req->fh2 = newSVsv (in_fh);
929	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
930	req->offset = in_offset;	1165	req->offset = in_offset;
931	req->length = length;	1166	req->length = length;
932		1167
933	send_req (req);	1168	REQ_SEND;
934	}	1169	}
935		1170
936	void	1171	void
937	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
938	SV * fh	1173	SV * fh
939	UV offset	1174	UV offset
940	IV length	1175	IV length
941	SV * callback	1176	SV * callback
942	PROTOTYPE: $$$;$	1177	PROTOTYPE: $$$;$
943	CODE:	1178	PPCODE:
944	{	1179	{
945	dREQ;	1180	dREQ;
946		1181
947	req->type = REQ_READAHEAD;	1182	req->type = REQ_READAHEAD;
948	req->fh = newSVsv (fh);	1183	req->fh = newSVsv (fh);
949	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
950	req->offset = offset;	1185	req->offset = offset;
951	req->length = length;	1186	req->length = length;
952		1187
953	send_req (req);	1188	REQ_SEND;
954	}	1189	}
955		1190
956	void	1191	void
957	aio_stat (fh_or_path,callback=&PL_sv_undef)	1192	aio_stat (fh_or_path,callback=&PL_sv_undef)
958	SV * fh_or_path	1193	SV * fh_or_path
959	SV * callback	1194	SV * callback
960	ALIAS:	1195	ALIAS:
961	aio_stat = REQ_STAT	1196	aio_stat = REQ_STAT
962	aio_lstat = REQ_LSTAT	1197	aio_lstat = REQ_LSTAT
963	CODE:	1198	PPCODE:
964	{	1199	{
965	dREQ;	1200	dREQ;
966		1201
967	New (0, req->statdata, 1, Stat_t);	1202	New (0, req->statdata, 1, Stat_t);
968	if (!req->statdata)	1203	if (!req->statdata)
969	{	1204	{
970	free_req (req);	1205	req_free (req);
971	croak ("out of memory during aio_req->statdata allocation");	1206	croak ("out of memory during aio_req->statdata allocation");
972	}	1207	}
973		1208
974	if (SvPOK (fh_or_path))	1209	if (SvPOK (fh_or_path))
975	{	1210	{
…		…
982	req->type = REQ_FSTAT;	1217	req->type = REQ_FSTAT;
983	req->fh = newSVsv (fh_or_path);	1218	req->fh = newSVsv (fh_or_path);
984	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
985	}	1220	}
986		1221
987	send_req (req);	1222	REQ_SEND;
988	}	1223	}
989		1224
990	void	1225	void
991	aio_unlink (pathname,callback=&PL_sv_undef)	1226	aio_unlink (pathname,callback=&PL_sv_undef)
992	SV * pathname	1227	SV * pathname
993	SV * callback	1228	SV * callback
994	ALIAS:	1229	ALIAS:
995	aio_unlink = REQ_UNLINK	1230	aio_unlink = REQ_UNLINK
996	aio_rmdir = REQ_RMDIR	1231	aio_rmdir = REQ_RMDIR
997	aio_readdir = REQ_READDIR	1232	aio_readdir = REQ_READDIR
998	CODE:	1233	PPCODE:
999	{	1234	{
1000	dREQ;	1235	dREQ;
1001		1236
1002	req->type = ix;	1237	req->type = ix;
1003	req->data = newSVsv (pathname);	1238	req->data = newSVsv (pathname);
1004	req->dataptr = SvPVbyte_nolen (req->data);	1239	req->dataptr = SvPVbyte_nolen (req->data);
1005		1240
1006	send_req (req);	1241	REQ_SEND;
1007	}	1242	}
1008		1243
1009	void	1244	void
1010	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1011	SV * oldpath	1246	SV * oldpath
…		…
1013	SV * callback	1248	SV * callback
1014	ALIAS:	1249	ALIAS:
1015	aio_link = REQ_LINK	1250	aio_link = REQ_LINK
1016	aio_symlink = REQ_SYMLINK	1251	aio_symlink = REQ_SYMLINK
1017	aio_rename = REQ_RENAME	1252	aio_rename = REQ_RENAME
1018	CODE:	1253	PPCODE:
1019	{	1254	{
1020	dREQ;	1255	dREQ;
1021		1256
1022	req->type = ix;	1257	req->type = ix;
1023	req->fh = newSVsv (oldpath);	1258	req->fh = newSVsv (oldpath);
1024	req->data2ptr = SvPVbyte_nolen (req->fh);	1259	req->data2ptr = SvPVbyte_nolen (req->fh);
1025	req->data = newSVsv (newpath);	1260	req->data = newSVsv (newpath);
1026	req->dataptr = SvPVbyte_nolen (req->data);	1261	req->dataptr = SvPVbyte_nolen (req->data);
1027		1262
1028	send_req (req);	1263	REQ_SEND;
1029	}	1264	}
		1265
		1266	void
		1267	aio_sleep (delay,callback=&PL_sv_undef)
		1268	double delay
		1269	SV * callback
		1270	PPCODE:
		1271	{
		1272	dREQ;
		1273
		1274	req->type = REQ_SLEEP;
		1275	req->fd = delay < 0. ? 0 : delay;
		1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1277
		1278	REQ_SEND;
		1279	}
		1280
		1281	void
		1282	aio_group (callback=&PL_sv_undef)
		1283	SV * callback
		1284	PROTOTYPE: ;$
		1285	PPCODE:
		1286	{
		1287	dREQ;
		1288
		1289	req->type = REQ_GROUP;
		1290	req_send (req);
		1291
		1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1293	}
		1294
		1295	void
		1296	aio_nop (callback=&PL_sv_undef)
		1297	SV * callback
		1298	PPCODE:
		1299	{
		1300	dREQ;
		1301
		1302	req->type = REQ_NOP;
		1303
		1304	REQ_SEND;
		1305	}
		1306
		1307	void
		1308	aioreq_pri (int pri = DEFAULT_PRI)
		1309	CODE:
		1310	if (pri < PRI_MIN) pri = PRI_MIN;
		1311	if (pri > PRI_MAX) pri = PRI_MAX;
		1312	next_pri = pri + PRI_BIAS;
		1313
		1314	void
		1315	aioreq_nice (int nice = 0)
		1316	CODE:
		1317	nice = next_pri - nice;
		1318	if (nice < PRI_MIN) nice = PRI_MIN;
		1319	if (nice > PRI_MAX) nice = PRI_MAX;
		1320	next_pri = nice + PRI_BIAS;
1030		1321
1031	void	1322	void
1032	flush ()	1323	flush ()
1033	PROTOTYPE:	1324	PROTOTYPE:
1034	CODE:	1325	CODE:
…		…
1077	CODE:	1368	CODE:
1078	RETVAL = nreqs;	1369	RETVAL = nreqs;
1079	OUTPUT:	1370	OUTPUT:
1080	RETVAL	1371	RETVAL
1081		1372
		1373	PROTOTYPES: DISABLE
		1374
		1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1376
		1377	void
		1378	cancel (aio_req_ornot req)
		1379	CODE:
		1380	req_cancel (req);
		1381
		1382	void
		1383	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1384	CODE:
		1385	SvREFCNT_dec (req->callback);
		1386	req->callback = newSVsv (callback);
		1387
		1388	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1389
		1390	void
		1391	add (aio_req grp, ...)
		1392	PPCODE:
		1393	{
		1394	int i;
		1395	aio_req req;
		1396
		1397	if (grp->fd == 2)
		1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1399
		1400	for (i = 1; i < items; ++i )
		1401	{
		1402	if (GIMME_V != G_VOID)
		1403	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1404
		1405	req = SvAIO_REQ (ST (i));
		1406
		1407	if (req)
		1408	{
		1409	++grp->length;
		1410	req->grp = grp;
		1411
		1412	req->grp_prev = 0;
		1413	req->grp_next = grp->grp_first;
		1414
		1415	if (grp->grp_first)
		1416	grp->grp_first->grp_prev = req;
		1417
		1418	grp->grp_first = req;
		1419	}
		1420	}
		1421	}
		1422
		1423	void
		1424	result (aio_req grp, ...)
		1425	CODE:
		1426	{
		1427	int i;
		1428	AV *av = newAV ();
		1429
		1430	for (i = 1; i < items; ++i )
		1431	av_push (av, newSVsv (ST (i)));
		1432
		1433	SvREFCNT_dec (grp->data);
		1434	grp->data = (SV *)av;
		1435	}
		1436
		1437	void
		1438	limit (aio_req grp, int limit)
		1439	CODE:
		1440	grp->fd2 = limit;
		1441	aio_grp_feed (grp);
		1442
		1443	void
		1444	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1445	CODE:
		1446	{
		1447	SvREFCNT_dec (grp->fh2);
		1448	grp->fh2 = newSVsv (callback);
		1449
		1450	if (grp->fd2 <= 0)
		1451	grp->fd2 = 2;
		1452
		1453	aio_grp_feed (grp);
		1454	}
		1455

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.40 by root, Sat Jun 24 16:27:02 2006 UTC vs. Revision 1.68 by root, Tue Oct 24 03:40:25 2006 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.40 by root, Sat Jun 24 16:27:02 2006 UTC vs.
Revision 1.68 by root, Tue Oct 24 03:40:25 2006 UTC