[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 1.70 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"
8	#include "autoconf/config.h"	16	#include "autoconf/config.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
13	#include <sys/types.h>	24	#include <sys/types.h>
14	#include <sys/stat.h>	25	#include <sys/stat.h>
15	#include <limits.h>	26	#include <limits.h>
16	#include <unistd.h>	27	#include <unistd.h>
17	#include <fcntl.h>	28	#include <fcntl.h>
…		…
38	# define NAME_MAX 4096	49	# define NAME_MAX 4096
39	#endif	50	#endif
40		51
41	#if __ia64	52	#if __ia64
42	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
43	#else	56	#else
44	# define STACKSIZE 8192	57	# define STACKSIZE 16384
45	#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)
46		69
47	enum {	70	enum {
48	REQ_QUIT,	71	REQ_QUIT,
49	REQ_OPEN, REQ_CLOSE,	72	REQ_OPEN, REQ_CLOSE,
50	REQ_READ, REQ_WRITE, REQ_READAHEAD,	73	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
53	REQ_FSYNC, REQ_FDATASYNC,	76	REQ_FSYNC, REQ_FDATASYNC,
54	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
55	REQ_READDIR,	78	REQ_READDIR,
56	REQ_LINK, REQ_SYMLINK,	79	REQ_LINK, REQ_SYMLINK,
		80	REQ_GROUP, REQ_NOP,
		81	REQ_BUSY,
57	};	82	};
58		83
		84	#define AIO_REQ_KLASS "IO::AIO::REQ"
		85	#define AIO_GRP_KLASS "IO::AIO::GRP"
		86
59	typedef struct aio_cb {	87	typedef struct aio_cb
		88	{
60	struct aio_cb *volatile next;	89	struct aio_cb *volatile next;
61		90
62	int type;	91	SV data, callback;
63		92	SV fh, fh2;
64	/* should receive a cleanup, with unions */	93	void dataptr, data2ptr;
65	int fd, fd2;	94	Stat_t *statdata;
66	off_t offset;	95	off_t offset;
67	size_t length;	96	size_t length;
68	ssize_t result;	97	ssize_t result;
		98
		99	STRLEN dataoffset;
		100	int type;
		101	int fd, fd2;
		102	int errorno;
69	mode_t mode; /* open */	103	mode_t mode; /* open */
70	int errorno;
71	SV data, callback;
72	SV fh, fh2;
73	void dataptr, data2ptr;
74	STRLEN dataoffset;
75		104
76	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;
77	} aio_cb;	110	} aio_cb;
78		111
		112	enum {
		113	FLAG_CANCELLED = 0x01,
		114	};
		115
79	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;
80		129
81	static int started, wanted;	130	static int started, wanted;
82	static volatile int nreqs;	131	static volatile int nreqs;
83	static int max_outstanding = 1<<30;	132	static int max_outstanding = 1<<30;
84	static int respipe [2];	133	static int respipe [2];
85		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
86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89		144
90	static volatile aio_req reqs, reqe; /* queue start, queue end */	145	/*
91	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;
92		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
93	static void free_req (aio_req req)	407	static void req_free (aio_req req)
94	{	408	{
95	if (req->data)	409	if (req->self)
		410	{
		411	sv_unmagic (req->self, PERL_MAGIC_ext);
		412	SvREFCNT_dec (req->self);
		413	}
		414
96	SvREFCNT_dec (req->data);	415	SvREFCNT_dec (req->data);
97
98	if (req->fh)
99	SvREFCNT_dec (req->fh);	416	SvREFCNT_dec (req->fh);
100
101	if (req->fh2)
102	SvREFCNT_dec (req->fh2);	417	SvREFCNT_dec (req->fh2);
103
104	if (req->statdata)
105	Safefree (req->statdata);
106
107	if (req->callback)
108	SvREFCNT_dec (req->callback);	418	SvREFCNT_dec (req->callback);
		419	Safefree (req->statdata);
109		420
110	if (req->type == REQ_READDIR && req->result >= 0)	421	if (req->type == REQ_READDIR && req->result >= 0)
111	free (req->data2ptr);	422	free (req->data2ptr);
112		423
113	Safefree (req);	424	Safefree (req);
114	}	425	}
115		426
116	static void	427	static void req_cancel (aio_req req)
117	poll_wait ()
118	{	428	{
119	if (nreqs && !ress)	429	req->flags \|= FLAG_CANCELLED;
120	{
121	fd_set rfd;
122	FD_ZERO(&rfd);
123	FD_SET(respipe [0], &rfd);
124		430
125	select (respipe [0] + 1, &rfd, 0, 0, 0);	431	if (req->type == REQ_GROUP)
126	}	432	{
127	}	433	aio_req sub;
128		434
129	static int	435	for (sub = req->grp_first; sub; sub = sub->grp_next)
130	poll_cb ()	436	req_cancel (sub);
		437	}
		438	}
		439
		440	static int poll_cb ()
131	{	441	{
132	dSP;	442	dSP;
133	int count = 0;	443	int count = 0;
134	int do_croak = 0;	444	int do_croak = 0;
135	aio_req req;	445	aio_req req;
136		446
137	for (;;)	447	for (;;)
138	{	448	{
139	pthread_mutex_lock (&reslock);	449	pthread_mutex_lock (&reslock);
140	req = ress;	450	req = reqq_shift (&res_queue);
141		451
142	if (req)	452	if (req)
143	{	453	{
144	ress = req->next;
145
146	if (!ress)	454	if (!res_queue.size)
147	{	455	{
148	/* read any signals sent by the worker threads */	456	/* read any signals sent by the worker threads */
149	char buf [32];	457	char buf [32];
150	while (read (respipe [0], buf, 32) == 32)	458	while (read (respipe [0], buf, 32) == 32)
151	;	459	;
152
153	rese = 0;
154	}	460	}
155	}	461	}
156		462
157	pthread_mutex_unlock (&reslock);	463	pthread_mutex_unlock (&reslock);
158		464
159	if (!req)	465	if (!req)
160	break;	466	break;
161		467
162	nreqs--;	468	--nreqs;
163		469
164	if (req->type == REQ_QUIT)	470	if (req->type == REQ_QUIT)
165	started--;	471	started--;
		472	else if (req->type == REQ_GROUP && req->length)
		473	{
		474	req->fd = 1; /* mark request as delayed */
		475	continue;
		476	}
166	else	477	else
167	{	478	{
168	int errorno = errno;
169	errno = req->errorno;
170
171	if (req->type == REQ_READ)	479	if (req->type == REQ_READ)
172	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));
173		481
174	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))	482	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
175	SvREADONLY_off (req->data);	483	SvREADONLY_off (req->data);
…		…
179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
180	PL_laststatval = req->result;	488	PL_laststatval = req->result;
181	PL_statcache = *(req->statdata);	489	PL_statcache = *(req->statdata);
182	}	490	}
183		491
184	ENTER;	492	req_invoke (req);
185	PUSHMARK (SP);
186		493
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++;	494	count++;
247	}	495	}
248		496
249	free_req (req);	497	req_free (req);
250	}	498	}
251		499
252	return count;	500	return count;
253	}	501	}
254		502
255	static void aio_proc(void arg);	503	static void aio_proc(void arg);
256		504
257	static void
258	start_thread (void)	505	static void start_thread (void)
259	{	506	{
260	sigset_t fullsigset, oldsigset;	507	sigset_t fullsigset, oldsigset;
261	pthread_t tid;	508	pthread_t tid;
262	pthread_attr_t attr;	509	pthread_attr_t attr;
263		510
…		…
272	started++;	519	started++;
273		520
274	sigprocmask (SIG_SETMASK, &oldsigset, 0);	521	sigprocmask (SIG_SETMASK, &oldsigset, 0);
275	}	522	}
276		523
277	static void	524	static void req_send (aio_req req)
278	send_req (aio_req req)
279	{	525	{
280	while (started < wanted && nreqs >= started)	526	while (started < wanted && nreqs >= started)
281	start_thread ();	527	start_thread ();
282		528
283	nreqs++;	529	++nreqs;
284		530
285	pthread_mutex_lock (&reqlock);	531	pthread_mutex_lock (&reqlock);
286		532	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);	533	pthread_cond_signal (&reqwait);
298	pthread_mutex_unlock (&reqlock);	534	pthread_mutex_unlock (&reqlock);
299		535
300	if (nreqs > max_outstanding)	536	if (nreqs > max_outstanding)
301	for (;;)	537	for (;;)
…		…
307		543
308	poll_wait ();	544	poll_wait ();
309	}	545	}
310	}	546	}
311		547
312	static void	548	static void end_thread (void)
313	end_thread (void)
314	{	549	{
315	aio_req req;	550	aio_req req;
		551
316	Newz (0, req, 1, aio_cb);	552	Newz (0, req, 1, aio_cb);
		553
317	req->type = REQ_QUIT;	554	req->type = REQ_QUIT;
		555	req->pri = PRI_MAX + PRI_BIAS;
318		556
319	send_req (req);	557	req_send (req);
320	}	558	}
321		559
322	static void min_parallel (int nthreads)	560	static void min_parallel (int nthreads)
323	{	561	{
324	if (wanted < nthreads)	562	if (wanted < nthreads)
…		…
369	* 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,
370	* but that's your problem, not mine.	608	* but that's your problem, not mine.
371	*/	609	*/
372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	610	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373		611
374	static ssize_t	612	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	{	613	{
377	ssize_t res;	614	ssize_t res;
378	off_t ooffset;	615	off_t ooffset;
379		616
380	pthread_mutex_lock (&preadwritelock);	617	pthread_mutex_lock (&preadwritelock);
…		…
385	pthread_mutex_unlock (&preadwritelock);	622	pthread_mutex_unlock (&preadwritelock);
386		623
387	return res;	624	return res;
388	}	625	}
389		626
390	static ssize_t
391	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)
392	{	628	{
393	ssize_t res;	629	ssize_t res;
394	off_t ooffset;	630	off_t ooffset;
395		631
396	pthread_mutex_lock (&preadwritelock);	632	pthread_mutex_lock (&preadwritelock);
…		…
409	#endif	645	#endif
410		646
411	#if !HAVE_READAHEAD	647	#if !HAVE_READAHEAD
412	# define readahead aio_readahead	648	# define readahead aio_readahead
413		649
414	static ssize_t
415	readahead (int fd, off_t offset, size_t count)	650	static ssize_t readahead (int fd, off_t offset, size_t count)
416	{	651	{
417	char readahead_buf[4096];	652	dBUF;
418		653
419	while (count > 0)	654	while (count > 0)
420	{	655	{
421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
422		657
423	pread (fd, readahead_buf, len, offset);	658	pread (fd, aio_buf, len, offset);
424	offset += len;	659	offset += len;
425	count -= len;	660	count -= len;
426	}	661	}
427		662
		663	fBUF;
		664
428	errno = 0;	665	errno = 0;
429	}	666	}
430	#endif	667	#endif
431		668
432	#if !HAVE_READDIR_R	669	#if !HAVE_READDIR_R
433	# define readdir_r aio_readdir_r	670	# define readdir_r aio_readdir_r
434		671
435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436		673
437	static int
438	readdir_r (DIR dirp, struct dirent ent, struct dirent **res)	674	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
439	{	675	{
440	struct dirent *e;	676	struct dirent *e;
441	int errorno;	677	int errorno;
442		678
443	pthread_mutex_lock (&readdirlock);	679	pthread_mutex_lock (&readdirlock);
…		…
459	return e ? 0 : -1;	695	return e ? 0 : -1;
460	}	696	}
461	#endif	697	#endif
462		698
463	/* sendfile always needs emulation */	699	/* sendfile always needs emulation */
464	static ssize_t
465	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)
466	{	701	{
467	ssize_t res;	702	ssize_t res;
468		703
469	if (!count)	704	if (!count)
470	return 0;	705	return 0;
…		…
519	#endif	754	#endif
520	)	755	)
521	)	756	)
522	{	757	{
523	/* emulate sendfile. this is a major pain in the ass */	758	/* emulate sendfile. this is a major pain in the ass */
524	char buf[4096];	759	dBUF;
		760
525	res = 0;	761	res = 0;
526		762
527	while (count)	763	while (count)
528	{	764	{
529	ssize_t cnt;	765	ssize_t cnt;
530		766
531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	767	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
532		768
533	if (cnt <= 0)	769	if (cnt <= 0)
534	{	770	{
535	if (cnt && !res) res = -1;	771	if (cnt && !res) res = -1;
536	break;	772	break;
537	}	773	}
538		774
539	cnt = write (ofd, buf, cnt);	775	cnt = write (ofd, aio_buf, cnt);
540		776
541	if (cnt <= 0)	777	if (cnt <= 0)
542	{	778	{
543	if (cnt && !res) res = -1;	779	if (cnt && !res) res = -1;
544	break;	780	break;
…		…
546		782
547	offset += cnt;	783	offset += cnt;
548	res += cnt;	784	res += cnt;
549	count -= cnt;	785	count -= cnt;
550	}	786	}
		787
		788	fBUF;
551	}	789	}
552		790
553	return res;	791	return res;
554	}	792	}
555		793
556	/* read a full directory */	794	/* read a full directory */
557	static int
558	scandir_ (const char path, void *namesp)	795	static int scandir_ (const char path, void *namesp)
559	{	796	{
560	DIR *dirp = opendir (path);	797	DIR *dirp;
561	union	798	union
562	{	799	{
563	struct dirent d;	800	struct dirent d;
564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	801	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565	} u;	802	} *u;
566	struct dirent *entp;	803	struct dirent *entp;
567	char name, names;	804	char name, names;
568	int memlen = 4096;	805	int memlen = 4096;
569	int memofs = 0;	806	int memofs = 0;
570	int res = 0;	807	int res = 0;
571	int errorno;	808	int errorno;
572		809
		810	dirp = opendir (path);
573	if (!dirp)	811	if (!dirp)
574	return -1;	812	return -1;
575		813
		814	u = malloc (sizeof (*u));
576	names = malloc (memlen);	815	names = malloc (memlen);
577		816
		817	if (u && names)
578	for (;;)	818	for (;;)
579	{	819	{
		820	errno = 0;
580	errno = 0, readdir_r (dirp, &u.d, &entp);	821	readdir_r (dirp, &u->d, &entp);
581		822
582	if (!entp)	823	if (!entp)
583	break;	824	break;
584		825
585	name = entp->d_name;	826	name = entp->d_name;
586		827
587	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))	828	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
588	{	829	{
589	int len = strlen (name) + 1;	830	int len = strlen (name) + 1;
590		831
591	res++;	832	res++;
592		833
593	while (memofs + len > memlen)	834	while (memofs + len > memlen)
594	{	835	{
595	memlen *= 2;	836	memlen *= 2;
596	names = realloc (names, memlen);	837	names = realloc (names, memlen);
597	if (!names)	838	if (!names)
598	break;	839	break;
599	}	840	}
600		841
601	memcpy (names + memofs, name, len);	842	memcpy (names + memofs, name, len);
602	memofs += len;	843	memofs += len;
603	}	844	}
604	}	845	}
605		846
606	errorno = errno;	847	errorno = errno;
		848	free (u);
607	closedir (dirp);	849	closedir (dirp);
608		850
609	if (errorno)	851	if (errorno)
610	{	852	{
611	free (names);	853	free (names);
…		…
617	return res;	859	return res;
618	}	860	}
619		861
620	/*****************************************************************************/	862	/*****************************************************************************/
621		863
622	static void *
623	aio_proc (void *thr_arg)	864	static void aio_proc (void thr_arg)
624	{	865	{
625	aio_req req;	866	aio_req req;
626	int type;	867	int type;
627		868
628	do	869	do
629	{	870	{
630	pthread_mutex_lock (&reqlock);	871	pthread_mutex_lock (&reqlock);
631		872
632	for (;;)	873	for (;;)
633	{	874	{
634	req = reqs;	875	req = reqq_shift (&req_queue);
635
636	if (reqs)
637	{
638	reqs = reqs->next;
639	if (!reqs) reqe = 0;
640	}
641		876
642	if (req)	877	if (req)
643	break;	878	break;
644		879
645	pthread_cond_wait (&reqwait, &reqlock);	880	pthread_cond_wait (&reqwait, &reqlock);
646	}	881	}
647		882
648	pthread_mutex_unlock (&reqlock);	883	pthread_mutex_unlock (&reqlock);
649		884
650	errno = 0; /* strictly unnecessary */	885	errno = 0; /* strictly unnecessary */
		886	type = req->type; /* remember type for QUIT check */
651		887
652	type = req->type;	888	if (!(req->flags & FLAG_CANCELLED))
653
654	switch (type)	889	switch (type)
655	{	890	{
656	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;
657	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;
658		893
659	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;
660	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;
661		896
662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665		900
666	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;
667	case REQ_CLOSE: req->result = close (req->fd); break;	902	case REQ_CLOSE: req->result = close (req->fd); break;
668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
670	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
671	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
672	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
673		908
674	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
675	case REQ_FSYNC: req->result = fsync (req->fd); break;	910	case REQ_FSYNC: req->result = fsync (req->fd); break;
676	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
677		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:
678	case REQ_QUIT:	925	case REQ_QUIT:
679	break;	926	break;
680		927
681	default:	928	default:
682	req->result = ENOSYS;	929	req->result = ENOSYS;
683	break;	930	break;
684	}	931	}
685		932
686	req->errorno = errno;	933	req->errorno = errno;
687		934
688	pthread_mutex_lock (&reslock);	935	pthread_mutex_lock (&reslock);
689		936
690	req->next = 0;	937	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 */	938	/* write a dummy byte to the pipe so fh becomes ready */
702	write (respipe [1], &respipe, 1);	939	write (respipe [1], &respipe, 1);
703	}
704		940
705	pthread_mutex_unlock (&reslock);	941	pthread_mutex_unlock (&reslock);
706	}	942	}
707	while (type != REQ_QUIT);	943	while (type != REQ_QUIT);
708		944
…		…
739	{	975	{
740	aio_req prv;	976	aio_req prv;
741		977
742	started = 0;	978	started = 0;
743		979
744	while (reqs)	980	while (prv = reqq_shift (&req_queue))
745	{
746	prv = reqs;
747	reqs = prv->next;
748	free_req (prv);	981	req_free (prv);
749	}
750		982
751	reqs = reqe = 0;	983	while (prv = reqq_shift (&res_queue))
752
753	while (ress)
754	{
755	prv = ress;
756	ress = prv->next;
757	free_req (prv);	984	req_free (prv);
758	}	985
759
760	ress = rese = 0;
761
762	close (respipe [0]);	986	close (respipe [0]);
763	close (respipe [1]);	987	close (respipe [1]);
764	create_pipe ();	988	create_pipe ();
765		989
766	atfork_parent ();	990	atfork_parent ();
767	}	991	}
768		992
769	#define dREQ \	993	#define dREQ \
770	aio_req req; \	994	aio_req req; \
		995	int req_pri = next_pri; \
		996	next_pri = DEFAULT_PRI + PRI_BIAS; \
771	\	997	\
772	if (SvOK (callback) && !SvROK (callback)) \	998	if (SvOK (callback) && !SvROK (callback)) \
773	croak ("clalback must be undef or of reference type"); \	999	croak ("callback must be undef or of reference type"); \
774	\	1000	\
775	Newz (0, req, 1, aio_cb); \	1001	Newz (0, req, 1, aio_cb); \
776	if (!req) \	1002	if (!req) \
777	croak ("out of memory during aio_req allocation"); \	1003	croak ("out of memory during aio_req allocation"); \
778	\	1004	\
779	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));
780		1013
781	MODULE = IO::AIO PACKAGE = IO::AIO	1014	MODULE = IO::AIO PACKAGE = IO::AIO
782		1015
783	PROTOTYPES: ENABLE	1016	PROTOTYPES: ENABLE
784		1017
785	BOOT:	1018	BOOT:
786	{	1019	{
		1020	HV *stash = gv_stashpv ("IO::AIO", 1);
		1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1023	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1024
787	create_pipe ();	1025	create_pipe ();
788	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
789	}	1027	}
790		1028
791	void	1029	void
…		…
811	SV * pathname	1049	SV * pathname
812	int flags	1050	int flags
813	int mode	1051	int mode
814	SV * callback	1052	SV * callback
815	PROTOTYPE: $$$;$	1053	PROTOTYPE: $$$;$
816	CODE:	1054	PPCODE:
817	{	1055	{
818	dREQ;	1056	dREQ;
819		1057
820	req->type = REQ_OPEN;	1058	req->type = REQ_OPEN;
821	req->data = newSVsv (pathname);	1059	req->data = newSVsv (pathname);
822	req->dataptr = SvPVbyte_nolen (req->data);	1060	req->dataptr = SvPVbyte_nolen (req->data);
823	req->fd = flags;	1061	req->fd = flags;
824	req->mode = mode;	1062	req->mode = mode;
825		1063
826	send_req (req);	1064	REQ_SEND;
827	}	1065	}
828		1066
829	void	1067	void
830	aio_close (fh,callback=&PL_sv_undef)	1068	aio_close (fh,callback=&PL_sv_undef)
831	SV * fh	1069	SV * fh
…		…
833	PROTOTYPE: $;$	1071	PROTOTYPE: $;$
834	ALIAS:	1072	ALIAS:
835	aio_close = REQ_CLOSE	1073	aio_close = REQ_CLOSE
836	aio_fsync = REQ_FSYNC	1074	aio_fsync = REQ_FSYNC
837	aio_fdatasync = REQ_FDATASYNC	1075	aio_fdatasync = REQ_FDATASYNC
838	CODE:	1076	PPCODE:
839	{	1077	{
840	dREQ;	1078	dREQ;
841		1079
842	req->type = ix;	1080	req->type = ix;
843	req->fh = newSVsv (fh);	1081	req->fh = newSVsv (fh);
844	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
845		1083
846	send_req (req);	1084	REQ_SEND (req);
847	}	1085	}
848		1086
849	void	1087	void
850	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
851	SV * fh	1089	SV * fh
…		…
856	SV * callback	1094	SV * callback
857	ALIAS:	1095	ALIAS:
858	aio_read = REQ_READ	1096	aio_read = REQ_READ
859	aio_write = REQ_WRITE	1097	aio_write = REQ_WRITE
860	PROTOTYPE: $$$$$;$	1098	PROTOTYPE: $$$$$;$
861	CODE:	1099	PPCODE:
862	{	1100	{
863	aio_req req;	1101	aio_req req;
864	STRLEN svlen;	1102	STRLEN svlen;
865	char *svptr = SvPVbyte (data, svlen);	1103	char *svptr = SvPVbyte (data, svlen);
866		1104
…		…
904	{	1142	{
905	SvREADONLY_on (data);	1143	SvREADONLY_on (data);
906	req->data2ptr = (void *)data;	1144	req->data2ptr = (void *)data;
907	}	1145	}
908		1146
909	send_req (req);	1147	REQ_SEND;
910	}	1148	}
911	}	1149	}
912		1150
913	void	1151	void
914	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
…		…
916	SV * in_fh	1154	SV * in_fh
917	UV in_offset	1155	UV in_offset
918	UV length	1156	UV length
919	SV * callback	1157	SV * callback
920	PROTOTYPE: $$$$;$	1158	PROTOTYPE: $$$$;$
921	CODE:	1159	PPCODE:
922	{	1160	{
923	dREQ;	1161	dREQ;
924		1162
925	req->type = REQ_SENDFILE;	1163	req->type = REQ_SENDFILE;
926	req->fh = newSVsv (out_fh);	1164	req->fh = newSVsv (out_fh);
…		…
928	req->fh2 = newSVsv (in_fh);	1166	req->fh2 = newSVsv (in_fh);
929	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
930	req->offset = in_offset;	1168	req->offset = in_offset;
931	req->length = length;	1169	req->length = length;
932		1170
933	send_req (req);	1171	REQ_SEND;
934	}	1172	}
935		1173
936	void	1174	void
937	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1175	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
938	SV * fh	1176	SV * fh
939	UV offset	1177	UV offset
940	IV length	1178	IV length
941	SV * callback	1179	SV * callback
942	PROTOTYPE: $$$;$	1180	PROTOTYPE: $$$;$
943	CODE:	1181	PPCODE:
944	{	1182	{
945	dREQ;	1183	dREQ;
946		1184
947	req->type = REQ_READAHEAD;	1185	req->type = REQ_READAHEAD;
948	req->fh = newSVsv (fh);	1186	req->fh = newSVsv (fh);
949	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
950	req->offset = offset;	1188	req->offset = offset;
951	req->length = length;	1189	req->length = length;
952		1190
953	send_req (req);	1191	REQ_SEND;
954	}	1192	}
955		1193
956	void	1194	void
957	aio_stat (fh_or_path,callback=&PL_sv_undef)	1195	aio_stat (fh_or_path,callback=&PL_sv_undef)
958	SV * fh_or_path	1196	SV * fh_or_path
959	SV * callback	1197	SV * callback
960	ALIAS:	1198	ALIAS:
961	aio_stat = REQ_STAT	1199	aio_stat = REQ_STAT
962	aio_lstat = REQ_LSTAT	1200	aio_lstat = REQ_LSTAT
963	CODE:	1201	PPCODE:
964	{	1202	{
965	dREQ;	1203	dREQ;
966		1204
967	New (0, req->statdata, 1, Stat_t);	1205	New (0, req->statdata, 1, Stat_t);
968	if (!req->statdata)	1206	if (!req->statdata)
969	{	1207	{
970	free_req (req);	1208	req_free (req);
971	croak ("out of memory during aio_req->statdata allocation");	1209	croak ("out of memory during aio_req->statdata allocation");
972	}	1210	}
973		1211
974	if (SvPOK (fh_or_path))	1212	if (SvPOK (fh_or_path))
975	{	1213	{
…		…
982	req->type = REQ_FSTAT;	1220	req->type = REQ_FSTAT;
983	req->fh = newSVsv (fh_or_path);	1221	req->fh = newSVsv (fh_or_path);
984	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
985	}	1223	}
986		1224
987	send_req (req);	1225	REQ_SEND;
988	}	1226	}
989		1227
990	void	1228	void
991	aio_unlink (pathname,callback=&PL_sv_undef)	1229	aio_unlink (pathname,callback=&PL_sv_undef)
992	SV * pathname	1230	SV * pathname
993	SV * callback	1231	SV * callback
994	ALIAS:	1232	ALIAS:
995	aio_unlink = REQ_UNLINK	1233	aio_unlink = REQ_UNLINK
996	aio_rmdir = REQ_RMDIR	1234	aio_rmdir = REQ_RMDIR
997	aio_readdir = REQ_READDIR	1235	aio_readdir = REQ_READDIR
998	CODE:	1236	PPCODE:
999	{	1237	{
1000	dREQ;	1238	dREQ;
1001		1239
1002	req->type = ix;	1240	req->type = ix;
1003	req->data = newSVsv (pathname);	1241	req->data = newSVsv (pathname);
1004	req->dataptr = SvPVbyte_nolen (req->data);	1242	req->dataptr = SvPVbyte_nolen (req->data);
1005		1243
1006	send_req (req);	1244	REQ_SEND;
1007	}	1245	}
1008		1246
1009	void	1247	void
1010	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1011	SV * oldpath	1249	SV * oldpath
…		…
1013	SV * callback	1251	SV * callback
1014	ALIAS:	1252	ALIAS:
1015	aio_link = REQ_LINK	1253	aio_link = REQ_LINK
1016	aio_symlink = REQ_SYMLINK	1254	aio_symlink = REQ_SYMLINK
1017	aio_rename = REQ_RENAME	1255	aio_rename = REQ_RENAME
1018	CODE:	1256	PPCODE:
1019	{	1257	{
1020	dREQ;	1258	dREQ;
1021		1259
1022	req->type = ix;	1260	req->type = ix;
1023	req->fh = newSVsv (oldpath);	1261	req->fh = newSVsv (oldpath);
1024	req->data2ptr = SvPVbyte_nolen (req->fh);	1262	req->data2ptr = SvPVbyte_nolen (req->fh);
1025	req->data = newSVsv (newpath);	1263	req->data = newSVsv (newpath);
1026	req->dataptr = SvPVbyte_nolen (req->data);	1264	req->dataptr = SvPVbyte_nolen (req->data);
1027		1265
1028	send_req (req);	1266	REQ_SEND;
1029	}	1267	}
		1268
		1269	void
		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
		1287	PROTOTYPE: ;$
		1288	PPCODE:
		1289	{
		1290	dREQ;
		1291
		1292	req->type = REQ_GROUP;
		1293	req_send (req);
		1294
		1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1296	}
		1297
		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;
1030		1324
1031	void	1325	void
1032	flush ()	1326	flush ()
1033	PROTOTYPE:	1327	PROTOTYPE:
1034	CODE:	1328	CODE:
…		…
1077	CODE:	1371	CODE:
1078	RETVAL = nreqs;	1372	RETVAL = nreqs;
1079	OUTPUT:	1373	OUTPUT:
1080	RETVAL	1374	RETVAL
1081		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 1.40 by root, Sat Jun 24 16:27:02 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 1.40 by root, Sat Jun 24 16:27:02 2006 UTC vs.
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC