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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.159 by root, Thu Jan 7 18:08:21 2010 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
26	#include <limits.h>	17	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	18	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	19	#include <sched.h>
31		20
32	#if HAVE_SENDFILE	21	/* perl namespace pollution */
33	# if __linux	22	#undef VERSION
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>
38	# elif __hpux
39	# include <sys/socket.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>
42	# else
43	# error sendfile support requested but not available
44	# endif
45	#endif
46		23
47	/* used for struct dirent, AIX doesn't provide it */	24	#ifdef _WIN32
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif
51		25
52	#ifndef PTHREAD_STACK_MIN	26	# define EIO_STRUCT_DIRENT Direntry_t
53	/* care for broken platforms, e.g. windows */	27	# undef malloc
54	# define PTHREAD_STACK_MIN 16384	28	# undef free
55	#endif
56		29
57	#if __ia64	30	// perl overrides all those nice win32 functions
58	# define STACKSIZE 65536	31	# undef open
59	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	32	# undef read
60	# define STACKSIZE PTHREAD_STACK_MIN	33	# undef write
		34	# undef send
		35	# undef recv
		36	# undef stat
		37	# undef fstat
		38	# define lstat stat
		39	# undef truncate
		40	# undef ftruncate
		41	# undef open
		42	# undef close
		43	# undef unlink
		44	# undef rmdir
		45	# undef rename
		46	# undef lseek
		47
		48	# define chown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchown(a,b,c) (errno = ENOSYS, -1)
		50	# define fchmod(a,b) (errno = ENOSYS, -1)
		51	# define symlink(a,b) (errno = ENOSYS, -1)
		52	# define readlink(a,b,c) (errno = ENOSYS, -1)
		53	# define mknod(a,b,c) (errno = ENOSYS, -1)
		54	# define truncate(a,b) (errno = ENOSYS, -1)
		55	# define ftruncate(fd,o) chsize ((fd), (o))
		56	# define fsync(fd) _commit (fd)
		57	# define opendir(fd) (errno = ENOSYS, 0)
		58	# define readdir(fd) (errno = ENOSYS, -1)
		59	# define closedir(fd) (errno = ENOSYS, -1)
		60	# define mkdir(a,b) mkdir (a)
		61
61	#else	62	#else
62	# define STACKSIZE 16384
63	#endif
64		63
65	/* buffer size for various temporary buffers */	64	# include <sys/time.h>
66	#define AIO_BUFSIZE 65536	65	# include <sys/select.h>
		66	# include <unistd.h>
		67	# include <utime.h>
		68	# include <signal.h>
		69	# define EIO_STRUCT_DIRENT struct dirent
67		70
68	#define dBUF \	71	#endif
69	char *aio_buf; \	72
70	LOCK (wrklock); \	73	/* perl stupidly overrides readdir and maybe others */
71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	74	/* with thread-unsafe versions, imagine that :( */
72	UNLOCK (wrklock); \	75	#undef readdir
73	if (!aio_buf) \	76	#undef opendir
74	return -1;	77	#undef closedir
		78
		79	#define EIO_STRUCT_STAT Stat_t
		80
		81	/* use NV for 32 bit perls as it allows larger offsets */
		82	#if IVSIZE >= 8
		83	# define VAL64 IV
		84	# define SvVAL64 SvIV
		85	# define newSVval64 newSViv
		86	#else
		87	# define VAL64 NV
		88	# define SvVAL64 SvNV
		89	# define newSVval64 newSVnv
		90	#endif
		91
		92	/*****************************************************************************/
		93
		94	#if __GNUC__ >= 3
		95	# define expect(expr,value) __builtin_expect ((expr),(value))
		96	#else
		97	# define expect(expr,value) (expr)
		98	#endif
		99
		100	#define expect_false(expr) expect ((expr) != 0, 0)
		101	#define expect_true(expr) expect ((expr) != 0, 1)
		102
		103	/*****************************************************************************/
		104
		105	typedef SV SV8; /* byte-sv, used for argument-checking */
		106	typedef int aio_rfd; /* read file desriptor */
		107	typedef int aio_wfd; /* write file descriptor */
		108
		109	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		110
		111	#define EIO_REQ_MEMBERS \
		112	SV *callback; \
		113	SV *sv1, *sv2; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/eio.h"
		120
		121	#ifndef POSIX_FADV_NORMAL
		122	# define POSIX_FADV_NORMAL 0
		123	# define NO_FADVISE 1
		124	#endif
		125
		126	#ifndef POSIX_FADV_SEQUENTIAL
		127	# define POSIX_FADV_SEQUENTIAL 0
		128	#endif
		129
		130	#ifndef POSIX_FADV_RANDOM
		131	# define POSIX_FADV_RANDOM 0
		132	#endif
		133
		134	#ifndef POSIX_FADV_NOREUSE
		135	# define POSIX_FADV_NOREUSE 0
		136	#endif
		137
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141
		142	#ifndef POSIX_FADV_DONTNEED
		143	# define POSIX_FADV_DONTNEED 0
		144	#endif
		145
		146	#ifndef ST_NODEV
		147	# define ST_NODEV 0
		148	#endif
		149
		150	#ifndef ST_NOEXEC
		151	# define ST_NOEXEC 0
		152	#endif
		153
		154	#ifndef ST_SYNCHRONOUS
		155	# define ST_SYNCHRONOUS 0
		156	#endif
		157
		158	#ifndef ST_MANDLOCK
		159	# define ST_MANDLOCK 0
		160	#endif
		161
		162	#ifndef ST_WRITE
		163	# define ST_WRITE 0
		164	#endif
		165
		166	#ifndef ST_APPEND
		167	# define ST_APPEND 0
		168	#endif
		169
		170	#ifndef ST_IMMUTABLE
		171	# define ST_IMMUTABLE 0
		172	#endif
		173
		174	#ifndef ST_NOATIME
		175	# define ST_NOATIME 0
		176	#endif
		177
		178	#ifndef ST_NODIRATIME
		179	# define ST_NODIRATIME 0
		180	#endif
		181
		182	#ifndef ST_RELATIME
		183	# define ST_RELATIME 0
		184	#endif
		185
		186	static int req_invoke (eio_req *req);
		187	#define EIO_FINISH(req) req_invoke (req)
		188	static void req_destroy (eio_req *grp);
		189	#define EIO_DESTROY(req) req_destroy (req)
75		190
76	enum {	191	enum {
77	REQ_QUIT,	192	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
78	REQ_OPEN, REQ_CLOSE,
79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
80	REQ_SENDFILE,
81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
82	REQ_FSYNC, REQ_FDATASYNC,
83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
84	REQ_READDIR,
85	REQ_LINK, REQ_SYMLINK,
86	REQ_GROUP, REQ_NOP,
87	REQ_BUSY,
88	};	193	};
89		194
90	#define AIO_REQ_KLASS "IO::AIO::REQ"	195	#include "libeio/eio.c"
91	#define AIO_GRP_KLASS "IO::AIO::GRP"
92		196
93	typedef struct aio_cb
94	{
95	struct aio_cb *volatile next;
96
97	SV *data, *callback;
98	SV *fh, *fh2;
99	void *dataptr, *data2ptr;
100	Stat_t *statdata;
101	off_t offset;
102	size_t length;
103	ssize_t result;
104
105	STRLEN dataoffset;
106	int type;
107	int fd, fd2;
108	int errorno;
109	mode_t mode; /* open */
110
111	unsigned char flags;
112	unsigned char pri;
113
114	SV *self; /* the perl counterpart of this request, if any */
115	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
116	} aio_cb;
117
118	enum {
119	FLAG_CANCELLED = 0x01,
120	};
121
122	typedef aio_cb *aio_req;	197	typedef eio_req *aio_req;
123	typedef aio_cb *aio_req_ornot;	198	typedef eio_req *aio_req_ornot;
124		199
125	enum {	200	static SV *on_next_submit;
126	PRI_MIN = -4,	201	static int next_pri = EIO_PRI_DEFAULT;
127	PRI_MAX = 4,	202	static int max_outstanding;
128		203
129	DEFAULT_PRI = 0,	204	static s_epipe respipe;
130	PRI_BIAS = -PRI_MIN,
131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
132	};
133		205
134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
135
136	static int started, wanted;
137	static volatile int nreqs;
138	static int respipe [2];
139
140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
142	#else
143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
144	#endif
145
146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
148
149	/* worker threasd management */
150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
151
152	typedef struct worker {
153	/* locked by wrklock */
154	struct worker *prev, *next;
155
156	pthread_t tid;
157
158	/* locked by reslock, reqlock or wrklock */
159	aio_req req; /* currently processed request */
160	void *dbuf;
161	DIR *dirp;
162	} worker;
163
164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
165
166	static void worker_clear (worker *wrk)
167	{
168	if (wrk->dirp)
169	{
170	closedir (wrk->dirp);
171	wrk->dirp = 0;
172	}
173
174	if (wrk->dbuf)
175	{
176	free (wrk->dbuf);
177	wrk->dbuf = 0;
178	}
179	}
180
181	static void worker_free (worker *wrk)
182	{
183	wrk->next->prev = wrk->prev;
184	wrk->prev->next = wrk->next;
185
186	free (wrk);
187	}
188
189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
192
193	/*
194	* a somewhat faster data structure might be nice, but
195	* with 8 priorities this actually needs <20 insns
196	* per shift, the most expensive operation.
197	*/
198	typedef struct {
199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
200	int size;
201	} reqq;
202
203	static reqq req_queue;
204	static reqq res_queue;
205
206	int reqq_push (reqq *q, aio_req req)
207	{
208	int pri = req->pri;
209	req->next = 0;
210
211	if (q->qe[pri])
212	{
213	q->qe[pri]->next = req;
214	q->qe[pri] = req;
215	}
216	else
217	q->qe[pri] = q->qs[pri] = req;
218
219	return q->size++;
220	}
221
222	aio_req reqq_shift (reqq *q)
223	{
224	int pri;
225
226	if (!q->size)
227	return 0;
228
229	--q->size;
230
231	for (pri = NUM_PRI; pri--; )
232	{
233	aio_req req = q->qs[pri];
234
235	if (req)
236	{
237	if (!(q->qs[pri] = req->next))
238	q->qe[pri] = 0;
239
240	return req;
241	}
242	}
243
244	abort ();
245	}
246
247	static int poll_cb ();
248	static void req_invoke (aio_req req);
249	static void req_free (aio_req req);	206	static void req_destroy (aio_req req);
250	static void req_cancel (aio_req req);	207	static void req_cancel (aio_req req);
251		208
		209	static void want_poll (void)
		210	{
		211	/* write a dummy byte to the pipe so fh becomes ready */
		212	s_epipe_signal (&respipe);
		213	}
		214
		215	static void done_poll (void)
		216	{
		217	/* read any signals sent by the worker threads */
		218	s_epipe_drain (&respipe);
		219	}
		220
252	/* must be called at most once */	221	/* must be called at most once */
253	static SV *req_sv (aio_req req, const char *klass)	222	static SV *req_sv (aio_req req, HV *stash)
254	{	223	{
255	if (!req->self)	224	if (!req->self)
256	{	225	{
257	req->self = (SV *)newHV ();	226	req->self = (SV *)newHV ();
258	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	227	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
259	}	228	}
260		229
261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	230	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
262	}	231	}
263		232
264	static aio_req SvAIO_REQ (SV *sv)	233	static aio_req SvAIO_REQ (SV *sv)
265	{	234	{
266	MAGIC *mg;	235	MAGIC *mg;
267		236
268	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	237	if (!SvROK (sv)
		238	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		239	&& SvSTASH (SvRV (sv)) != aio_req_stash
		240	&& !sv_derived_from (sv, "IO::AIO::REQ")))
269	croak ("object of class " AIO_REQ_KLASS " expected");	241	croak ("object of class IO::AIO::REQ expected");
270		242
271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	243	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
272		244
273	return mg ? (aio_req)mg->mg_ptr : 0;	245	return mg ? (aio_req)mg->mg_ptr : 0;
274	}	246	}
275		247
276	static void aio_grp_feed (aio_req grp)	248	static void aio_grp_feed (aio_req grp)
277	{	249	{
278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	250	if (grp->sv2 && SvOK (grp->sv2))
279	{	251	{
280	int old_len = grp->length;
281
282	if (grp->fh2 && SvOK (grp->fh2))
283	{
284	dSP;	252	dSP;
285		253
286	ENTER;	254	ENTER;
287	SAVETMPS;	255	SAVETMPS;
288	PUSHMARK (SP);	256	PUSHMARK (SP);
289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	257	XPUSHs (req_sv (grp, aio_grp_stash));
290	PUTBACK;	258	PUTBACK;
291	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	259	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
292	SPAGAIN;	260	SPAGAIN;
293	FREETMPS;	261	FREETMPS;
294	LEAVE;	262	LEAVE;
295	}
296
297	/* stop if no progress has been made */
298	if (old_len == grp->length)
299	{
300	SvREFCNT_dec (grp->fh2);
301	grp->fh2 = 0;
302	break;
303	}
304	}	263	}
305	}	264	}
306		265
307	static void aio_grp_dec (aio_req grp)	266	static void req_submit (eio_req *req)
308	{	267	{
309	--grp->length;	268	eio_submit (req);
310		269
311	/* call feeder, if applicable */	270	if (expect_false (on_next_submit))
312	aio_grp_feed (grp);
313
314	/* finish, if done */
315	if (!grp->length && grp->fd)
316	{	271	{
317	req_invoke (grp);	272	dSP;
318	req_free (grp);	273	SV *cb = sv_2mortal (on_next_submit);
		274
		275	on_next_submit = 0;
		276
		277	PUSHMARK (SP);
		278	PUTBACK;
		279	call_sv (cb, G_DISCARD | G_EVAL);
319	}	280	}
320	}	281	}
321		282
322	static void poll_wait ()	283	static int req_invoke (eio_req *req)
323	{	284	{
324	fd_set rfd;	285	dSP;
325		286
326	while (nreqs)	287	if (req->flags & FLAG_SV2_RO_OFF)
		288	SvREADONLY_off (req->sv2);
		289
		290	if (!EIO_CANCELLED (req) && req->callback)
327	{	291	{
328	int size;
329	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
330	LOCK (reslock);
331	#endif
332	size = res_queue.size;
333	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
334	UNLOCK (reslock);
335	#endif
336
337	if (size)
338	return;
339
340	FD_ZERO(&rfd);
341	FD_SET(respipe [0], &rfd);
342
343	select (respipe [0] + 1, &rfd, 0, 0, 0);
344	}
345	}
346
347	static void req_invoke (aio_req req)
348	{
349	dSP;
350
351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
352	{
353	errno = req->errorno;
354
355	ENTER;	292	ENTER;
356	SAVETMPS;	293	SAVETMPS;
357	PUSHMARK (SP);	294	PUSHMARK (SP);
358	EXTEND (SP, 1);	295	EXTEND (SP, 1);
359		296
360	switch (req->type)	297	switch (req->type)
361	{	298	{
362	case REQ_READDIR:	299	case EIO_READDIR:
363	{	300	{
364	SV *rv = &PL_sv_undef;	301	SV *rv = &PL_sv_undef;
365		302
366	if (req->result >= 0)	303	if (req->result >= 0)
367	{	304	{
368	int i;	305	int i;
369	char *buf = req->data2ptr;	306	char *names = (char *)req->ptr2;
		307	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
370	AV *av = newAV ();	308	AV *av = newAV ();
371		309
372	av_extend (av, req->result - 1);	310	av_extend (av, req->result - 1);
373		311
374	for (i = 0; i < req->result; ++i)	312	for (i = 0; i < req->result; ++i)
375	{	313	{
376	SV *sv = newSVpv (buf, 0);	314	if (req->int1 & EIO_READDIR_DENTS)
		315	{
		316	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
377		317
		318	if (req->int1 & EIO_READDIR_CUSTOM2)
		319	{
		320	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		321	AV *avent = newAV ();
		322
		323	av_extend (avent, 2);
		324
		325	if (!sv_type [ent->type])
		326	{
		327	sv_type [ent->type] = newSViv (ent->type);
		328	SvREADONLY_on (sv_type [ent->type]);
		329	}
		330
		331	av_store (avent, 0, namesv);
		332	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		333	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		334
		335	av_store (av, i, newRV_noinc ((SV *)avent));
		336	}
		337	else
378	av_store (av, i, sv);	338	av_store (av, i, namesv);
		339
		340	++ent;
		341	}
		342	else
		343	{
		344	SV *name = newSVpv (names, 0);
		345	av_store (av, i, name);
379	buf += SvCUR (sv) + 1;	346	names += SvCUR (name) + 1;
		347	}
380	}	348	}
381		349
382	rv = sv_2mortal (newRV_noinc ((SV *)av));	350	rv = sv_2mortal (newRV_noinc ((SV *)av));
383	}	351	}
384		352
385	PUSHs (rv);	353	PUSHs (rv);
		354
		355	if (req->int1 & EIO_READDIR_CUSTOM1)
		356	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
386	}	357	}
387	break;	358	break;
388		359
389	case REQ_OPEN:	360	case EIO_OPEN:
390	{	361	{
391	/* convert fd to fh */	362	/* convert fd to fh */
392	SV *fh;	363	SV *fh = &PL_sv_undef;
393		364
394	PUSHs (sv_2mortal (newSViv (req->result)));	365	if (req->result >= 0)
395	PUTBACK;	366	{
396	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	367	GV *gv = (GV *)sv_newmortal ();
397	SPAGAIN;	368	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		369	char sym [64];
		370	int symlen;
		371
		372	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		373	gv_init (gv, aio_stash, sym, symlen, 0);
398		374
399	fh = SvREFCNT_inc (POPs);	375	symlen = snprintf (
		376	sym,
		377	sizeof (sym),
		378	"%s&=%d",
		379	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		380	(int)req->result
		381	);
400		382
		383	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		384	fh = (SV *)gv;
		385	}
		386
401	PUSHMARK (SP);	387	PUSHs (fh);
402	XPUSHs (sv_2mortal (fh));
403	}	388	}
404	break;	389	break;
405		390
		391	case EIO_STATVFS:
		392	case EIO_FSTATVFS:
		393	{
		394	SV *rv = &PL_sv_undef;
		395
		396	if (req->result >= 0)
		397	{
		398	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		399	HV *hv = newHV ();
		400
		401	rv = sv_2mortal (newRV_noinc (hv));
		402
		403	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		404	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		405	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		406	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		407	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		408	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		409	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		410	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		411	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		412	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		413	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		414	}
		415
		416	PUSHs (rv);
		417	}
		418
		419	break;
		420
406	case REQ_GROUP:	421	case EIO_GROUP:
407	req->fd = 2; /* mark group as finished */	422	req->int1 = 2; /* mark group as finished */
408		423
409	if (req->data)	424	if (req->sv1)
410	{	425	{
411	int i;	426	int i;
412	AV *av = (AV *)req->data;	427	AV *av = (AV *)req->sv1;
413		428
414	EXTEND (SP, AvFILL (av) + 1);	429	EXTEND (SP, AvFILL (av) + 1);
415	for (i = 0; i <= AvFILL (av); ++i)	430	for (i = 0; i <= AvFILL (av); ++i)
416	PUSHs (*av_fetch (av, i, 0));	431	PUSHs (*av_fetch (av, i, 0));
417	}	432	}
418	break;	433	break;
419		434
420	case REQ_NOP:	435	case EIO_NOP:
421	case REQ_BUSY:	436	case EIO_BUSY:
422	break;	437	break;
		438
		439	case EIO_READLINK:
		440	if (req->result > 0)
		441	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		442	break;
		443
		444	case EIO_STAT:
		445	case EIO_LSTAT:
		446	case EIO_FSTAT:
		447	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		448	PL_laststatval = req->result;
		449	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		450	PUSHs (sv_2mortal (newSViv (req->result)));
		451	break;
		452
		453	case EIO_READ:
		454	{
		455	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		456	*SvEND (req->sv2) = 0;
		457	SvPOK_only (req->sv2);
		458	SvSETMAGIC (req->sv2);
		459	PUSHs (sv_2mortal (newSViv (req->result)));
		460	}
		461	break;
		462
		463	case EIO_DUP2:
		464	if (req->result > 0)
		465	req->result = 0;
		466	/* FALLTHROUGH */
423		467
424	default:	468	default:
425	PUSHs (sv_2mortal (newSViv (req->result)));	469	PUSHs (sv_2mortal (newSViv (req->result)));
426	break;	470	break;
427	}	471	}
428		472
		473	errno = req->errorno;
429		474
430	PUTBACK;	475	PUTBACK;
431	call_sv (req->callback, G_VOID | G_EVAL);	476	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
432	SPAGAIN;	477	SPAGAIN;
433		478
434	FREETMPS;	479	FREETMPS;
435	LEAVE;	480	LEAVE;
		481
		482	PUTBACK;
436	}	483	}
437		484
438	if (req->grp)	485	return !!SvTRUE (ERRSV);
439	{
440	aio_req grp = req->grp;
441
442	/* unlink request */
443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
445
446	if (grp->grp_first == req)
447	grp->grp_first = req->grp_next;
448
449	aio_grp_dec (grp);
450	}
451
452	if (SvTRUE (ERRSV))
453	{
454	req_free (req);
455	croak (0);
456	}
457	}	486	}
458		487
459	static void req_free (aio_req req)	488	static void req_destroy (aio_req req)
460	{	489	{
461	if (req->self)	490	if (req->self)
462	{	491	{
463	sv_unmagic (req->self, PERL_MAGIC_ext);	492	sv_unmagic (req->self, PERL_MAGIC_ext);
464	SvREFCNT_dec (req->self);	493	SvREFCNT_dec (req->self);
465	}	494	}
466		495
467	SvREFCNT_dec (req->data);
468	SvREFCNT_dec (req->fh);	496	SvREFCNT_dec (req->sv1);
469	SvREFCNT_dec (req->fh2);	497	SvREFCNT_dec (req->sv2);
470	SvREFCNT_dec (req->callback);	498	SvREFCNT_dec (req->callback);
471	Safefree (req->statdata);
472
473	if (req->type == REQ_READDIR)
474	free (req->data2ptr);
475		499
476	Safefree (req);	500	Safefree (req);
477	}	501	}
478		502
479	static void req_cancel_subs (aio_req grp)	503	static void req_cancel_subs (aio_req grp)
480	{	504	{
481	aio_req sub;	505	aio_req sub;
482		506
483	if (grp->type != REQ_GROUP)	507	if (grp->type != EIO_GROUP)
484	return;	508	return;
485		509
486	SvREFCNT_dec (grp->fh2);	510	SvREFCNT_dec (grp->sv2);
487	grp->fh2 = 0;	511	grp->sv2 = 0;
488		512
489	for (sub = grp->grp_first; sub; sub = sub->grp_next)	513	eio_grp_cancel (grp);
490	req_cancel (sub);
491	}	514	}
492		515
493	static void req_cancel (aio_req req)	516	static void
		517	create_respipe (void)
494	{	518	{
495	req->flags |= FLAG_CANCELLED;	519	if (s_epipe_renew (&respipe))
496		520	croak ("IO::AIO: unable to initialize result pipe");
497	req_cancel_subs (req);
498	}	521	}
499		522
		523	static void poll_wait (void)
		524	{
		525	while (eio_nreqs ())
		526	{
		527	int size;
		528
		529	X_LOCK (reslock);
		530	size = res_queue.size;
		531	X_UNLOCK (reslock);
		532
		533	if (size)
		534	return;
		535
		536	etp_maybe_start_thread ();
		537
		538	s_epipe_wait (&respipe);
		539	}
		540	}
		541
500	static int poll_cb ()	542	static int poll_cb (void)
501	{	543	{
502	dSP;
503	int count = 0;
504	int do_croak = 0;
505	aio_req req;
506
507	for (;;)	544	for (;;)
508	{	545	{
509	LOCK (reslock);	546	int res = eio_poll ();
510	req = reqq_shift (&res_queue);
511		547
512	if (req)	548	if (res > 0)
513	{
514	if (!res_queue.size)
515	{
516	/* read any signals sent by the worker threads */
517	char buf [32];
518	while (read (respipe [0], buf, 32) == 32)
519	;
520	}
521	}
522
523	UNLOCK (reslock);
524
525	if (!req)
526	break;	549	croak (0);
527		550
528	--nreqs;	551	if (!max_outstanding || max_outstanding > eio_nreqs ())
		552	return res;
529		553
530	if (req->type == REQ_QUIT)	554	poll_wait ();
531	started--;
532	else if (req->type == REQ_GROUP && req->length)
533	{
534	req->fd = 1; /* mark request as delayed */
535	continue;
536	}
537	else
538	{
539	if (req->type == REQ_READ)
540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
541
542	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
543	SvREADONLY_off (req->data);
544
545	if (req->statdata)
546	{
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;
549	PL_statcache = *(req->statdata);
550	}
551
552	req_invoke (req);
553
554	count++;
555	}
556
557	req_free (req);
558	}	555	}
559
560	return count;
561	}
562
563	static void *aio_proc(void *arg);
564
565	static void start_thread (void)
566	{
567	sigset_t fullsigset, oldsigset;
568	pthread_attr_t attr;
569
570	worker *wrk = calloc (1, sizeof (worker));
571
572	if (!wrk)
573	croak ("unable to allocate worker thread data");
574
575	pthread_attr_init (&attr);
576	pthread_attr_setstacksize (&attr, STACKSIZE);
577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
578
579	sigfillset (&fullsigset);
580
581	LOCK (wrklock);
582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
583
584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
585	{
586	wrk->prev = &wrk_first;
587	wrk->next = wrk_first.next;
588	wrk_first.next->prev = wrk;
589	wrk_first.next = wrk;
590	started++;
591	}
592	else
593	free (wrk);
594
595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
596	UNLOCK (wrklock);
597	}
598
599	static void req_send (aio_req req)
600	{
601	while (started < wanted && nreqs >= started)
602	start_thread ();
603
604	++nreqs;
605
606	LOCK (reqlock);
607	reqq_push (&req_queue, req);
608	pthread_cond_signal (&reqwait);
609	UNLOCK (reqlock);
610	}
611
612	static void end_thread (void)
613	{
614	aio_req req;
615
616	Newz (0, req, 1, aio_cb);
617
618	req->type = REQ_QUIT;
619	req->pri = PRI_MAX + PRI_BIAS;
620
621	req_send (req);
622	}
623
624	static void min_parallel (int nthreads)
625	{
626	if (wanted < nthreads)
627	wanted = nthreads;
628	}
629
630	static void max_parallel (int nthreads)
631	{
632	int cur = started;
633
634	if (wanted > nthreads)
635	wanted = nthreads;
636
637	while (cur > wanted)
638	{
639	end_thread ();
640	cur--;
641	}
642
643	while (started > wanted)
644	{
645	poll_wait ();
646	poll_cb ();
647	}
648	}
649
650	static void create_pipe ()
651	{
652	if (pipe (respipe))
653	croak ("unable to initialize result pipe");
654
655	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
656	croak ("cannot set result pipe to nonblocking mode");
657
658	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
659	croak ("cannot set result pipe to nonblocking mode");
660	}
661
662	/*****************************************************************************/
663	/* work around various missing functions */
664
665	#if !HAVE_PREADWRITE
666	# define pread aio_pread
667	# define pwrite aio_pwrite
668
669	/*
670	* make our pread/pwrite safe against themselves, but not against
671	* normal read/write by using a mutex. slows down execution a lot,
672	* but that's your problem, not mine.
673	*/
674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
675
676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
677	{
678	ssize_t res;
679	off_t ooffset;
680
681	LOCK (preadwritelock);
682	ooffset = lseek (fd, 0, SEEK_CUR);
683	lseek (fd, offset, SEEK_SET);
684	res = read (fd, buf, count);
685	lseek (fd, ooffset, SEEK_SET);
686	UNLOCK (preadwritelock);
687
688	return res;
689	}
690
691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
692	{
693	ssize_t res;
694	off_t ooffset;
695
696	LOCK (preadwritelock);
697	ooffset = lseek (fd, 0, SEEK_CUR);
698	lseek (fd, offset, SEEK_SET);
699	res = write (fd, buf, count);
700	lseek (fd, offset, SEEK_SET);
701	UNLOCK (preadwritelock);
702
703	return res;
704	}
705	#endif
706
707	#if !HAVE_FDATASYNC
708	# define fdatasync fsync
709	#endif
710
711	#if !HAVE_READAHEAD
712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
713
714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
715	{
716	dBUF;
717
718	while (count > 0)
719	{
720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
721
722	pread (fd, aio_buf, len, offset);
723	offset += len;
724	count -= len;
725	}
726
727	errno = 0;
728	}
729
730	#endif
731
732	#if !HAVE_READDIR_R
733	# define readdir_r aio_readdir_r
734
735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
736
737	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
738	{
739	struct dirent *e;
740	int errorno;
741
742	LOCK (readdirlock);
743
744	e = readdir (dirp);
745	errorno = errno;
746
747	if (e)
748	{
749	*res = ent;
750	strcpy (ent->d_name, e->d_name);
751	}
752	else
753	*res = 0;
754
755	UNLOCK (readdirlock);
756
757	errno = errorno;
758	return e ? 0 : -1;
759	}
760	#endif
761
762	/* sendfile always needs emulation */
763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
764	{
765	ssize_t res;
766
767	if (!count)
768	return 0;
769
770	#if HAVE_SENDFILE
771	# if __linux
772	res = sendfile (ofd, ifd, &offset, count);
773
774	# elif __freebsd
775	/*
776	* Of course, the freebsd sendfile is a dire hack with no thoughts
777	* wasted on making it similar to other I/O functions.
778	*/
779	{
780	off_t sbytes;
781	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
782
783	if (res < 0 && sbytes)
784	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
785	res = sbytes;
786	}
787
788	# elif __hpux
789	res = sendfile (ofd, ifd, offset, count, 0, 0);
790
791	# elif __solaris
792	{
793	struct sendfilevec vec;
794	size_t sbytes;
795
796	vec.sfv_fd = ifd;
797	vec.sfv_flag = 0;
798	vec.sfv_off = offset;
799	vec.sfv_len = count;
800
801	res = sendfilev (ofd, &vec, 1, &sbytes);
802
803	if (res < 0 && sbytes)
804	res = sbytes;
805	}
806
807	# endif
808	#else
809	res = -1;
810	errno = ENOSYS;
811	#endif
812
813	if (res < 0
814	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
815	#if __solaris
816	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
817	#endif
818	)
819	)
820	{
821	/* emulate sendfile. this is a major pain in the ass */
822	dBUF;
823
824	res = 0;
825
826	while (count)
827	{
828	ssize_t cnt;
829
830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
831
832	if (cnt <= 0)
833	{
834	if (cnt && !res) res = -1;
835	break;
836	}
837
838	cnt = write (ofd, aio_buf, cnt);
839
840	if (cnt <= 0)
841	{
842	if (cnt && !res) res = -1;
843	break;
844	}
845
846	offset += cnt;
847	res += cnt;
848	count -= cnt;
849	}
850	}
851
852	return res;
853	}
854
855	/* read a full directory */
856	static void scandir_ (aio_req req, worker *self)
857	{
858	DIR *dirp;
859	union
860	{
861	struct dirent d;
862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
863	} *u;
864	struct dirent *entp;
865	char *name, *names;
866	int memlen = 4096;
867	int memofs = 0;
868	int res = 0;
869	int errorno;
870
871	LOCK (wrklock);
872	self->dirp = dirp = opendir (req->dataptr);
873	self->dbuf = u = malloc (sizeof (*u));
874	UNLOCK (wrklock);
875
876	req->data2ptr = names = malloc (memlen);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}
909	}
910
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916
917	/*****************************************************************************/
918
919	static void *aio_proc (void *thr_arg)
920	{
921	aio_req req;
922	int type;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}	556	}
1038		557
1039	static void atfork_child (void)	558	static void atfork_child (void)
1040	{	559	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();	560	create_respipe ();
		561	}
1066		562
1067	atfork_parent ();	563	static SV *
		564	get_cb (SV *cb_sv)
		565	{
		566	SvGETMAGIC (cb_sv);
		567	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1068	}	568	}
1069		569
1070	#define dREQ \	570	#define dREQ \
		571	SV *cb_cv; \
1071	aio_req req; \	572	aio_req req; \
1072	int req_pri = next_pri; \	573	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	574	next_pri = EIO_PRI_DEFAULT; \
1074	\	575	\
1075	if (SvOK (callback) && !SvROK (callback)) \	576	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	577	\
1078	Newz (0, req, 1, aio_cb); \	578	Newz (0, req, 1, eio_req); \
1079	if (!req) \	579	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	580	croak ("out of memory during eio_req allocation"); \
1081	\	581	\
1082	req->callback = newSVsv (callback); \	582	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	583	req->pri = req_pri
1084		584
1085	#define REQ_SEND \	585	#define REQ_SEND \
		586	PUTBACK; \
1086	req_send (req); \	587	req_submit (req); \
		588	SPAGAIN; \
1087	\	589	\
1088	if (GIMME_V != G_VOID) \	590	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	591	XPUSHs (req_sv (req, aio_req_stash));
1090		592
1091	MODULE = IO::AIO PACKAGE = IO::AIO	593	MODULE = IO::AIO PACKAGE = IO::AIO
1092		594
1093	PROTOTYPES: ENABLE	595	PROTOTYPES: ENABLE
1094		596
1095	BOOT:	597	BOOT:
1096	{	598	{
		599	static const struct {
		600	const char *name;
		601	IV iv;
		602	} *civ, const_iv[] = {
		603	# define const_iv(name, value) { # name, (IV) value },
		604	# define const_eio(name) { # name, (IV) EIO_ ## name },
		605	const_iv (EXDEV , EXDEV)
		606	const_iv (ENOSYS , ENOSYS)
		607	const_iv (O_RDONLY, O_RDONLY)
		608	const_iv (O_WRONLY, O_WRONLY)
		609	const_iv (O_CREAT , O_CREAT)
		610	const_iv (O_TRUNC , O_TRUNC)
		611	#ifndef _WIN32
		612	const_iv (S_IFIFO , S_IFIFO)
		613	#endif
		614	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		615	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		616	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		617	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		618	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		619	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		620
		621	const_iv (ST_RDONLY , ST_RDONLY)
		622	const_iv (ST_NOSUID , ST_NOSUID)
		623	const_iv (ST_NODEV , ST_NODEV)
		624	const_iv (ST_NOEXEC , ST_NOEXEC)
		625	const_iv (ST_SYNCHRONOUS , ST_SYNCHRONOUS)
		626	const_iv (ST_MANDLOCK , ST_MANDLOCK)
		627	const_iv (ST_WRITE , ST_WRITE)
		628	const_iv (ST_APPEND , ST_APPEND)
		629	const_iv (ST_IMMUTABLE , ST_IMMUTABLE)
		630	const_iv (ST_NOATIME , ST_NOATIME)
		631	const_iv (ST_NODIRATIME , ST_NODIRATIME)
		632	const_iv (ST_RELATIME , ST_RELATIME)
		633
		634	const_eio (MS_ASYNC)
		635	const_eio (MS_INVALIDATE)
		636	const_eio (MS_SYNC)
		637
		638	const_eio (MT_MODIFY)
		639
		640	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		641	const_eio (SYNC_FILE_RANGE_WRITE)
		642	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		643
		644	const_eio (READDIR_DENTS)
		645	const_eio (READDIR_DIRS_FIRST)
		646	const_eio (READDIR_STAT_ORDER)
		647	const_eio (READDIR_FOUND_UNKNOWN)
		648
		649	const_eio (DT_UNKNOWN)
		650	const_eio (DT_FIFO)
		651	const_eio (DT_CHR)
		652	const_eio (DT_DIR)
		653	const_eio (DT_BLK)
		654	const_eio (DT_REG)
		655	const_eio (DT_LNK)
		656	const_eio (DT_SOCK)
		657	const_eio (DT_WHT)
		658	};
		659
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	660	aio_stash = gv_stashpv ("IO::AIO" , 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	661	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	662	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101		663
		664	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		665	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		666
1102	create_pipe ();	667	create_respipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105		668
		669	if (eio_init (want_poll, done_poll) < 0)
		670	croak ("IO::AIO: unable to initialise eio library");
		671
		672	/* atfork child called in fifo order, so before eio's handler */
		673	X_THREAD_ATFORK (0, 0, atfork_child);
		674	}
		675
1106	void	676	void
1107	min_parallel (nthreads)	677	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	678	PROTOTYPE: $
		679	CODE:
		680	eio_set_max_poll_reqs (nreqs);
1110		681
1111	void	682	void
1112	max_parallel (nthreads)	683	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	684	PROTOTYPE: $
		685	CODE:
		686	eio_set_max_poll_time (nseconds);
1115		687
1116	void	688	void
		689	min_parallel (int nthreads)
		690	PROTOTYPE: $
		691	CODE:
		692	eio_set_min_parallel (nthreads);
		693
		694	void
		695	max_parallel (int nthreads)
		696	PROTOTYPE: $
		697	CODE:
		698	eio_set_max_parallel (nthreads);
		699
		700	void
		701	max_idle (int nthreads)
		702	PROTOTYPE: $
		703	CODE:
		704	eio_set_max_idle (nthreads);
		705
		706	void
		707	max_outstanding (int maxreqs)
		708	PROTOTYPE: $
		709	CODE:
		710	max_outstanding = maxreqs;
		711
		712	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	713	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	714	PROTOTYPE: $$$;$
1123	PPCODE:	715	PPCODE:
1124	{	716	{
1125	dREQ;	717	dREQ;
1126		718
1127	req->type = REQ_OPEN;	719	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	720	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	721	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	722	req->int1 = flags;
1131	req->mode = mode;	723	req->int2 = mode;
1132		724
1133	REQ_SEND;	725	REQ_SEND;
1134	}	726	}
1135		727
1136	void	728	void
1137	aio_close (fh,callback=&PL_sv_undef)	729	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	730	PROTOTYPE: $;$
1141	ALIAS:	731	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	732	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	733	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	734	PPCODE:
1146	{	735	{
		736	int fd = s_fileno_croak (fh, 0);
1147	dREQ;	737	dREQ;
1148		738
1149	req->type = ix;	739	req->type = ix;
1150	req->fh = newSVsv (fh);	740	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	741	req->int1 = fd;
1152		742
1153	REQ_SEND (req);	743	REQ_SEND (req);
1154	}	744	}
1155		745
1156	void	746	void
		747	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		748	PROTOTYPE: $$$$;$
		749	PPCODE:
		750	{
		751	int fd = s_fileno_croak (fh, 0);
		752	dREQ;
		753
		754	req->type = EIO_SYNC_FILE_RANGE;
		755	req->sv1 = newSVsv (fh);
		756	req->int1 = fd;
		757	req->offs = offset;
		758	req->size = nbytes;
		759	req->int2 = flags;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
		765	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		766	PROTOTYPE: $;$
		767	PPCODE:
		768	{
		769	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		770	int fd = s_fileno_croak (fh, 0);
		771	dREQ;
		772
		773	if (close_pipe < 0)
		774	{
		775	int pipefd [2];
		776
		777	if (pipe (pipefd) < 0
		778	|| close (pipefd [1]) < 0
		779	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		780	abort (); /*D*/
		781
		782	close_pipe = pipefd [0];
		783	}
		784
		785	req->type = EIO_DUP2;
		786	req->int1 = close_pipe;
		787	req->sv2 = newSVsv (fh);
		788	req->int2 = fd;
		789
		790	REQ_SEND (req);
		791	}
		792
		793	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	794	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	795	ALIAS:
1165	aio_read = REQ_READ	796	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	797	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	798	PROTOTYPE: $$$$$;$
1168	PPCODE:	799	PPCODE:
1169	{	800	{
1170	aio_req req;
1171	STRLEN svlen;	801	STRLEN svlen;
		802	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	803	char *svptr = SvPVbyte (data, svlen);
1173		804	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		805
1177	if (dataoffset < 0)	806	if (dataoffset < 0)
1178	dataoffset += svlen;	807	dataoffset += svlen;
1179		808
1180	if (dataoffset < 0 || dataoffset > svlen)	809	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	810	croak ("dataoffset outside of data scalar");
1182		811
1183	if (ix == REQ_WRITE)	812	if (ix == EIO_WRITE)
1184	{	813	{
1185	/* write: check length and adjust. */	814	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	815	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	816	len = svlen - dataoffset;
1188	}	817	}
1189	else	818	else
1190	{	819	{
1191	/* read: grow scalar as necessary */	820	/* read: check type and grow scalar as necessary */
		821	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	822	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	823	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		824
1198	{	825	{
1199	dREQ;	826	dREQ;
1200		827
1201	req->type = ix;	828	req->type = ix;
1202	req->fh = newSVsv (fh);	829	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	830	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	831	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	832	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	833	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	834	req->ptr2 = (char *)svptr + dataoffset;
		835	req->stroffset = dataoffset;
1209		836
1210	if (!SvREADONLY (data))	837	if (!SvREADONLY (data))
1211	{	838	{
1212	SvREADONLY_on (data);	839	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	840	req->flags |= FLAG_SV2_RO_OFF;
1214	}	841	}
1215		842
1216	REQ_SEND;	843	REQ_SEND;
1217	}	844	}
1218	}	845	}
1219		846
1220	void	847	void
		848	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		849	PROTOTYPE: $$;$
		850	PPCODE:
		851	{
		852	SV *data;
		853	dREQ;
		854
		855	req->type = EIO_READLINK;
		856	req->sv1 = newSVsv (path);
		857	req->ptr1 = SvPVbyte_nolen (req->sv1);
		858
		859	REQ_SEND;
		860	}
		861
		862	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	863	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$	864	PROTOTYPE: $$$$;$
1228	PPCODE:	865	PPCODE:
1229	{	866	{
		867	int ifd = s_fileno_croak (in_fh , 0);
		868	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	869	dREQ;
1231		870
1232	req->type = REQ_SENDFILE;	871	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	872	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	873	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	874	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	875	req->int2 = ifd;
1237	req->offset = in_offset;	876	req->offs = in_offset;
1238	req->length = length;	877	req->size = length;
1239		878
1240	REQ_SEND;	879	REQ_SEND;
1241	}	880	}
1242		881
1243	void	882	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	883	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	884	PROTOTYPE: $$$;$
1250	PPCODE:	885	PPCODE:
1251	{	886	{
		887	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	888	dREQ;
1253		889
1254	req->type = REQ_READAHEAD;	890	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	891	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	892	req->int1 = fd;
1257	req->offset = offset;	893	req->offs = offset;
1258	req->length = length;	894	req->size = length;
1259		895
1260	REQ_SEND;	896	REQ_SEND;
1261	}	897	}
1262		898
1263	void	899	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	900	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	901	ALIAS:
1268	aio_stat = REQ_STAT	902	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	903	aio_lstat = EIO_LSTAT
		904	aio_statvfs = EIO_STATVFS
1270	PPCODE:	905	PPCODE:
1271	{	906	{
1272	dREQ;	907	dREQ;
1273		908
1274	New (0, req->statdata, 1, Stat_t);	909	req->sv1 = newSVsv (fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280		910
1281	if (SvPOK (fh_or_path))	911	if (SvPOK (req->sv1))
1282	{	912	{
1283	req->type = ix;	913	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	914	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	915	}
1287	else	916	else
1288	{	917	{
1289	req->type = REQ_FSTAT;	918	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	919	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	920	}
1293		921
1294	REQ_SEND;	922	REQ_SEND;
1295	}	923	}
1296		924
1297	void	925	void
		926	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		927	PPCODE:
		928	{
		929	dREQ;
		930
		931	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		932	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		933	req->sv1 = newSVsv (fh_or_path);
		934
		935	if (SvPOK (req->sv1))
		936	{
		937	req->type = EIO_UTIME;
		938	req->ptr1 = SvPVbyte_nolen (req->sv1);
		939	}
		940	else
		941	{
		942	req->type = EIO_FUTIME;
		943	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		944	}
		945
		946	REQ_SEND;
		947	}
		948
		949	void
		950	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		951	PPCODE:
		952	{
		953	dREQ;
		954
		955	req->sv1 = newSVsv (fh_or_path);
		956	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		957
		958	if (SvPOK (req->sv1))
		959	{
		960	req->type = EIO_TRUNCATE;
		961	req->ptr1 = SvPVbyte_nolen (req->sv1);
		962	}
		963	else
		964	{
		965	req->type = EIO_FTRUNCATE;
		966	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		967	}
		968
		969	REQ_SEND;
		970	}
		971
		972	void
		973	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		974	ALIAS:
		975	aio_chmod = EIO_CHMOD
		976	aio_mkdir = EIO_MKDIR
		977	PPCODE:
		978	{
		979	dREQ;
		980
		981	req->int2 = mode;
		982	req->sv1 = newSVsv (fh_or_path);
		983
		984	if (SvPOK (req->sv1))
		985	{
		986	req->type = ix;
		987	req->ptr1 = SvPVbyte_nolen (req->sv1);
		988	}
		989	else
		990	{
		991	req->type = EIO_FCHMOD;
		992	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		993	}
		994
		995	REQ_SEND;
		996	}
		997
		998	void
		999	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1000	PPCODE:
		1001	{
		1002	dREQ;
		1003
		1004	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1005	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1006	req->sv1 = newSVsv (fh_or_path);
		1007
		1008	if (SvPOK (req->sv1))
		1009	{
		1010	req->type = EIO_CHOWN;
		1011	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1012	}
		1013	else
		1014	{
		1015	req->type = EIO_FCHOWN;
		1016	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1017	}
		1018
		1019	REQ_SEND;
		1020	}
		1021
		1022	void
		1023	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1024	PPCODE:
		1025	{
		1026	dREQ;
		1027
		1028	req->type = EIO_READDIR;
		1029	req->sv1 = newSVsv (pathname);
		1030	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1031	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1032
		1033	if (flags & EIO_READDIR_DENTS)
		1034	req->int1 |= EIO_READDIR_CUSTOM2;
		1035
		1036	REQ_SEND;
		1037	}
		1038
		1039	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1040	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1041	ALIAS:
1302	aio_unlink = REQ_UNLINK	1042	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1043	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1044	aio_readdir = EIO_READDIR
1305	PPCODE:	1045	PPCODE:
1306	{	1046	{
1307	dREQ;	1047	dREQ;
1308		1048
1309	req->type = ix;	1049	req->type = ix;
1310	req->data = newSVsv (pathname);	1050	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
1312		1052
1313	REQ_SEND;	1053	REQ_SEND;
1314	}	1054	}
1315		1055
1316	void	1056	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1057	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1058	ALIAS:
1322	aio_link = REQ_LINK	1059	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1060	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1061	aio_rename = EIO_RENAME
1325	PPCODE:	1062	PPCODE:
1326	{	1063	{
1327	dREQ;	1064	dREQ;
1328		1065
1329	req->type = ix;	1066	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1067	req->sv1 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1068	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	1069	req->sv2 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1070	req->ptr2 = SvPVbyte_nolen (req->sv2);
1334		1071
1335	REQ_SEND;	1072	REQ_SEND;
1336	}	1073	}
1337		1074
1338	void	1075	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1076	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1077	PPCODE:
1343	{	1078	{
1344	dREQ;	1079	dREQ;
1345		1080
1346	req->type = REQ_BUSY;	1081	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1082	req->sv1 = newSVsv (pathname);
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1083	req->ptr1 = SvPVbyte_nolen (req->sv1);
1349		1084	req->int2 = (mode_t)mode;
		1085	req->offs = dev;
		1086
1350	REQ_SEND;	1087	REQ_SEND;
1351	}	1088	}
1352		1089
1353	void	1090	void
		1091	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1092	ALIAS:
		1093	aio_mtouch = EIO_MTOUCH
		1094	aio_msync = EIO_MSYNC
		1095	PROTOTYPE: $$$$;$
		1096	PPCODE:
		1097	{
		1098	STRLEN svlen;
		1099	UV len = SvUV (length);
		1100	char *svptr = SvPVbyte (data, svlen);
		1101
		1102	if (offset < 0)
		1103	offset += svlen;
		1104
		1105	if (offset < 0 || offset > svlen)
		1106	croak ("offset outside of scalar");
		1107
		1108	if (!SvOK (length) || len + offset > svlen)
		1109	len = svlen - offset;
		1110
		1111	{
		1112	dREQ;
		1113
		1114	req->type = ix;
		1115	req->size = len;
		1116	req->sv2 = SvREFCNT_inc (data);
		1117	req->ptr2 = (char *)svptr + offset;
		1118	req->int1 = flags;
		1119
		1120	REQ_SEND;
		1121	}
		1122	}
		1123
		1124	void
		1125	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1126	PPCODE:
		1127	{
		1128	dREQ;
		1129
		1130	req->type = EIO_BUSY;
		1131	req->nv1 = delay < 0. ? 0. : delay;
		1132
		1133	REQ_SEND;
		1134	}
		1135
		1136	void
1354	aio_group (callback=&PL_sv_undef)	1137	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	1138	PROTOTYPE: ;$
1357	PPCODE:	1139	PPCODE:
1358	{	1140	{
1359	dREQ;	1141	dREQ;
1360		1142
1361	req->type = REQ_GROUP;	1143	req->type = EIO_GROUP;
		1144
1362	req_send (req);	1145	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1146	XPUSHs (req_sv (req, aio_grp_stash));
1365	}	1147	}
1366		1148
1367	void	1149	void
1368	aio_nop (callback=&PL_sv_undef)	1150	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1151	ALIAS:
		1152	aio_nop = EIO_NOP
		1153	aio_sync = EIO_SYNC
1370	PPCODE:	1154	PPCODE:
1371	{	1155	{
1372	dREQ;	1156	dREQ;
1373		1157
1374	req->type = REQ_NOP;	1158	req->type = ix;
1375		1159
1376	REQ_SEND;	1160	REQ_SEND;
1377	}	1161	}
1378		1162
1379	void	1163	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1164	aioreq_pri (int pri = 0)
1381	CODE:	1165	PROTOTYPE: ;$
		1166	CODE:
		1167	RETVAL = next_pri;
		1168	if (items > 0)
		1169	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1170	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1171	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1172	next_pri = pri;
		1173	}
		1174	OUTPUT:
		1175	RETVAL
1385		1176
1386	void	1177	void
1387	aioreq_nice (int nice = 0)	1178	aioreq_nice (int nice = 0)
1388	CODE:	1179	CODE:
1389	nice = next_pri - nice;	1180	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1181	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1182	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1183	next_pri = nice;
1393		1184
1394	void	1185	void
1395	flush ()	1186	flush ()
1396	PROTOTYPE:	1187	PROTOTYPE:
1397	CODE:	1188	CODE:
1398	while (nreqs)	1189	while (eio_nreqs ())
1399	{	1190	{
1400	poll_wait ();	1191	poll_wait ();
1401	poll_cb ();	1192	poll_cb ();
1402	}	1193	}
1403		1194
1404	void	1195	int
1405	poll()	1196	poll()
1406	PROTOTYPE:	1197	PROTOTYPE:
1407	CODE:	1198	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1199	poll_wait ();
1411	poll_cb ();	1200	RETVAL = poll_cb ();
1412	}	1201	OUTPUT:
		1202	RETVAL
1413		1203
1414	int	1204	int
1415	poll_fileno()	1205	poll_fileno()
1416	PROTOTYPE:	1206	PROTOTYPE:
1417	CODE:	1207	CODE:
1418	RETVAL = respipe [0];	1208	RETVAL = s_epipe_fd (&respipe);
1419	OUTPUT:	1209	OUTPUT:
1420	RETVAL	1210	RETVAL
1421		1211
1422	int	1212	int
1423	poll_cb(...)	1213	poll_cb(...)
…		…
1429		1219
1430	void	1220	void
1431	poll_wait()	1221	poll_wait()
1432	PROTOTYPE:	1222	PROTOTYPE:
1433	CODE:	1223	CODE:
1434	if (nreqs)
1435	poll_wait ();	1224	poll_wait ();
1436		1225
1437	int	1226	int
1438	nreqs()	1227	nreqs()
1439	PROTOTYPE:	1228	PROTOTYPE:
1440	CODE:	1229	CODE:
1441	RETVAL = nreqs;	1230	RETVAL = eio_nreqs ();
1442	OUTPUT:	1231	OUTPUT:
1443	RETVAL	1232	RETVAL
1444		1233
		1234	int
		1235	nready()
		1236	PROTOTYPE:
		1237	CODE:
		1238	RETVAL = eio_nready ();
		1239	OUTPUT:
		1240	RETVAL
		1241
		1242	int
		1243	npending()
		1244	PROTOTYPE:
		1245	CODE:
		1246	RETVAL = eio_npending ();
		1247	OUTPUT:
		1248	RETVAL
		1249
		1250	int
		1251	nthreads()
		1252	PROTOTYPE:
		1253	CODE:
		1254	RETVAL = eio_nthreads ();
		1255	OUTPUT:
		1256	RETVAL
		1257
		1258	int
		1259	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1260	PROTOTYPE: $$$$
		1261	CODE:
		1262	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1263	RETVAL = posix_fadvise (fh, offset, length, advice);
		1264	#else
		1265	RETVAL = errno = ENOSYS;
		1266	#endif
		1267	OUTPUT:
		1268	RETVAL
		1269
		1270	ssize_t
		1271	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1272	PROTOTYPE: $$$$
		1273	CODE:
		1274	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1275	OUTPUT:
		1276	RETVAL
		1277
		1278	void _on_next_submit (SV *cb)
		1279	CODE:
		1280	SvREFCNT_dec (on_next_submit);
		1281	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1282
1445	PROTOTYPES: DISABLE	1283	PROTOTYPES: DISABLE
1446		1284
1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1285	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1448		1286
1449	void	1287	void
1450	cancel (aio_req_ornot req)	1288	cancel (aio_req_ornot req)
1451	CODE:	1289	CODE:
1452	req_cancel (req);	1290	eio_cancel (req);
1453		1291
1454	void	1292	void
1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1293	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1456	CODE:	1294	PPCODE:
		1295	{
		1296	if (GIMME_V != G_VOID)
		1297	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1298
		1299	if (items > 1)
		1300	{
		1301	SV *cb_cv =get_cb (callback);
		1302
1457	SvREFCNT_dec (req->callback);	1303	SvREFCNT_dec (req->callback);
1458	req->callback = newSVsv (callback);	1304	req->callback = SvREFCNT_inc (cb_cv);
		1305	}
		1306	}
1459		1307
1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1308	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1461		1309
1462	void	1310	void
1463	add (aio_req grp, ...)	1311	add (aio_req grp, ...)
1464	PPCODE:	1312	PPCODE:
1465	{	1313	{
1466	int i;	1314	int i;
1467	aio_req req;
1468		1315
1469	if (grp->fd == 2)	1316	if (grp->int1 == 2)
1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1317	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1471		1318
1472	for (i = 1; i < items; ++i )	1319	for (i = 1; i < items; ++i )
1473	{	1320	{
		1321	aio_req req;
		1322
1474	if (GIMME_V != G_VOID)	1323	if (GIMME_V != G_VOID)
1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1324	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1476		1325
1477	req = SvAIO_REQ (ST (i));	1326	req = SvAIO_REQ (ST (i));
1478		1327
1479	if (req)	1328	if (req)
1480	{	1329	eio_grp_add (grp, req);
1481	++grp->length;
1482	req->grp = grp;
1483
1484	req->grp_prev = 0;
1485	req->grp_next = grp->grp_first;
1486
1487	if (grp->grp_first)
1488	grp->grp_first->grp_prev = req;
1489
1490	grp->grp_first = req;
1491	}
1492	}	1330	}
1493	}	1331	}
1494		1332
1495	void	1333	void
1496	cancel_subs (aio_req_ornot req)	1334	cancel_subs (aio_req_ornot req)
…		…
1500	void	1338	void
1501	result (aio_req grp, ...)	1339	result (aio_req grp, ...)
1502	CODE:	1340	CODE:
1503	{	1341	{
1504	int i;	1342	int i;
		1343	AV *av;
		1344
		1345	grp->errorno = errno;
		1346
1505	AV *av = newAV ();	1347	av = newAV ();
		1348	av_extend (av, items - 1);
1506		1349
1507	for (i = 1; i < items; ++i )	1350	for (i = 1; i < items; ++i )
1508	av_push (av, newSVsv (ST (i)));	1351	av_push (av, newSVsv (ST (i)));
1509		1352
1510	SvREFCNT_dec (grp->data);	1353	SvREFCNT_dec (grp->sv1);
1511	grp->data = (SV *)av;	1354	grp->sv1 = (SV *)av;
1512	}	1355	}
		1356
		1357	void
		1358	errno (aio_req grp, int errorno = errno)
		1359	CODE:
		1360	grp->errorno = errorno;
1513		1361
1514	void	1362	void
1515	limit (aio_req grp, int limit)	1363	limit (aio_req grp, int limit)
1516	CODE:	1364	CODE:
1517	grp->fd2 = limit;	1365	eio_grp_limit (grp, limit);
1518	aio_grp_feed (grp);
1519		1366
1520	void	1367	void
1521	feed (aio_req grp, SV *callback=&PL_sv_undef)	1368	feed (aio_req grp, SV *callback=&PL_sv_undef)
1522	CODE:	1369	CODE:
1523	{	1370	{
1524	SvREFCNT_dec (grp->fh2);	1371	SvREFCNT_dec (grp->sv2);
1525	grp->fh2 = newSVsv (callback);	1372	grp->sv2 = newSVsv (callback);
		1373	grp->feed = aio_grp_feed;
1526		1374
1527	if (grp->fd2 <= 0)	1375	if (grp->int2 <= 0)
1528	grp->fd2 = 2;	1376	grp->int2 = 2;
1529		1377
1530	aio_grp_feed (grp);	1378	eio_grp_limit (grp, grp->int2);
1531	}	1379	}
1532		1380

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