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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs.
Revision 1.226 by root, Sun Jan 6 11:48:14 2013 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
25	# if __linux	24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/types.h>
		28	# include <linux/fiemap.h>
		29	# define HAVE_FIEMAP 1
		30	# endif
		31	#endif
		32
		33	/* perl namespace pollution */
		34	#undef VERSION
		35
		36	/* perl stupidly overrides readdir and maybe others */
		37	/* with thread-unsafe versions, imagine that :( */
		38	#undef readdir
		39	#undef opendir
		40	#undef closedir
		41
		42	#ifdef _WIN32
		43
		44	// perl overrides all those nice libc functions
		45
		46	#undef malloc
		47	#undef free
		48	#undef open
		49	#undef read
		50	#undef write
		51	#undef send
		52	#undef recv
		53	#undef stat
		54	#undef lstat
		55	#undef fstat
		56	#undef truncate
		57	#undef ftruncate
		58	#undef open
		59	#undef link
		60	#undef close
		61	#undef unlink
		62	#undef mkdir
		63	#undef rmdir
		64	#undef rename
		65	#undef lseek
		66	#undef opendir
		67	#undef readdir
		68	#undef closedir
		69	#undef chmod
		70	#undef fchmod
		71	#undef dup
		72	#undef dup2
		73	#undef abort
		74	#undef pipe
		75
		76	#define EIO_STRUCT_STAT struct _stati64
		77	#define EIO_STRUCT_STATI64
		78
		79	#else
		80
		81	#include <sys/time.h>
26	# include <sys/sendfile.h>	82	#include <sys/select.h>
27	# elif __freebsd	83	#include <unistd.h>
28	# include <sys/socket.h>	84	#include <utime.h>
29	# include <sys/uio.h>	85	#include <signal.h>
30	# elif __hpux	86
31	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
32	# elif __solaris /* not yet */	88
33	# include <sys/sendfile.h>	89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	SV *sv3, *sv4; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/config.h"
		120	#include "libeio/eio.h"
		121
		122	static int req_invoke (eio_req *req);
		123	#define EIO_FINISH(req) req_invoke (req)
		124	static void req_destroy (eio_req *grp);
		125	#define EIO_DESTROY(req) req_destroy (req)
		126
		127	#include "libeio/eio.c"
		128
		129	#if !HAVE_POSIX_FADVISE
		130	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		131	#endif
		132
		133	#if !HAVE_POSIX_MADVISE
		134	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#ifndef MAP_ANONYMOUS
		138	# ifdef MAP_ANON
		139	# define MAP_ANONYMOUS MAP_ANON
34	# else	140	# else
35	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	142	# endif
37	#endif	143	#endif
38		144
39	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
40	#ifndef NAME_MAX	146	#include "def0.h"
41	# define NAME_MAX 4096
42	#endif
43		147
44	#if __ia64	148	#ifndef makedev
45	# define STACKSIZE 65536	149	# define makedev(maj,min) (((maj) << 8) | (min))
46	#else
47	# define STACKSIZE 8192
48	#endif	150	#endif
		151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
		153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
49		157
50	enum {	158	#if PAGESIZE <= 0
51	REQ_QUIT,	159	# define PAGESIZE sysconf (_SC_PAGESIZE)
52	REQ_OPEN, REQ_CLOSE,	160	#endif
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};
63		161
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	162	/*****************************************************************************/
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		163
67	typedef struct aio_cb	164	static void
		165	fiemap (eio_req *req)
68	{	166	{
69	struct aio_cb *grp, *grp_prev, *grp_next;	167	req->result = -1;
70		168
71	struct aio_cb *volatile next;	169	#if HAVE_FIEMAP
		170	/* assume some c99 */
		171	struct fiemap *fiemap = 0;
		172	size_t end_offset;
		173	int count = req->int3;
72		174
73	SV *self; /* the perl counterpart of this request, if any */	175	req->flags |= EIO_FLAG_PTR1_FREE;
74		176
75	SV *data, *callback;	177	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
76	SV *fh, *fh2;	178	/* increase in 3.5kb steps */
77	void *dataptr, *data2ptr;	179	if (count < 0)
78	Stat_t *statdata;	180	count = 8;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82		181
83	int type;	182	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
84	int fd, fd2;	183	errno = ENOMEM;
85	int errorno;	184	if (!fiemap)
86	STRLEN dataoffset;	185	return;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90		186
91	typedef aio_cb *aio_req;	187	req->ptr1 = fiemap;
92	typedef aio_cb *aio_req_ornot;
93		188
94	static int started, wanted;	189	fiemap->fm_start = req->offs;
95	static volatile int nreqs;	190	fiemap->fm_length = req->size;
96	static int max_outstanding = 1<<30;	191	fiemap->fm_flags = req->int2;
97	static int respipe [2];	192	fiemap->fm_extent_count = count;
98		193
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	194	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	195	return;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		196
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	197	if (req->int3 >= 0 /* not autosizing */
104	static volatile aio_req ress, rese; /* queue start, queue end */	198	|| !fiemap->fm_mapped_extents /* no more extents */
		199	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		200	goto done;
105		201
106	static void req_free (aio_req req);	202	/* else we have to loop -
		203	* it would be tempting (actually I tried that first) to just query the
		204	* number of extents needed, but linux often feels like not returning all
		205	* extents, without telling us it left any out. this complicates
		206	* this quite a bit.
		207	*/
107		208
108	/* must be called at most once */	209	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
109	static SV *req_sv (aio_req req, const char *klass)
110	{
111	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
113		210
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	211	for (;;)
115	}
116
117	static aio_req SvAIO_REQ (SV *sv)
118	{
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
120	croak ("object of class " AIO_REQ_KLASS " expected");
121
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123
124	return mg ? (aio_req)mg->mg_ptr : 0;
125	}
126
127	static void poll_wait ()
128	{
129	if (nreqs && !ress)
130	{	212	{
131	fd_set rfd;	213	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
132	FD_ZERO(&rfd);	214	char scratch[3072];
133	FD_SET(respipe [0], &rfd);	215	struct fiemap *incmap = (struct fiemap *)scratch;
134		216
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	217	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
136	}	218	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
137	}	219	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		220	incmap->fm_flags = fiemap->fm_flags;
		221	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
138		222
139	static void req_invoke (aio_req req)	223	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
140	{
141	dSP;
142	int errorno = errno;
143
144	if (req->cancelled || !SvOK (req->callback))
145	return;	224	return;
146		225
147	errno = req->errorno;	226	if (!incmap->fm_mapped_extents)
		227	goto done;
148		228
149	ENTER;	229	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
150	PUSHMARK (SP);	230	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
151	EXTEND (SP, 1);	231	errno = ENOMEM;
		232	if (!fiemap)
		233	return;
152		234
153	switch (req->type)	235	req->ptr1 = fiemap;
154	{	236
155	case REQ_READDIR:	237	for (count = 0; count < incmap->fm_mapped_extents; ++count)
156	{	238	{
157	SV *rv = &PL_sv_undef;	239	struct fiemap_extent *e = incmap->fm_extents + count;
158		240
159	if (req->result >= 0)	241	if (e->fe_logical + e->fe_length >= end_offset)
160	{	242	goto done;
161	char *buf = req->data2ptr;
162	AV *av = newAV ();
163		243
164	while (req->result)	244	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
165	{
166	SV *sv = newSVpv (buf, 0);
167		245
168	av_push (av, sv);	246	if (e->fe_flags & FIEMAP_EXTENT_LAST)
169	buf += SvCUR (sv) + 1;	247	goto done;
170	req->result--;
171	}
172		248
173	rv = sv_2mortal (newRV_noinc ((SV *)av));
174	}
175
176	PUSHs (rv);
177	}
178	break;
179
180	case REQ_OPEN:
181	{
182	/* convert fd to fh */
183	SV *fh;
184
185	PUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
188	SPAGAIN;
189
190	fh = SvREFCNT_inc (POPs);
191
192	PUSHMARK (SP);
193	XPUSHs (sv_2mortal (fh));
194	}
195	break;
196
197	case REQ_GROUP:
198	if (req->data)
199	{
200	int i;
201	AV *av = (AV *)req->data;
202
203	EXTEND (SP, AvFILL (av) + 1);
204	for (i = 0; i <= AvFILL (av); ++i)
205	PUSHs (*av_fetch (av, i, 0));
206	}
207	break;
208
209	case REQ_SLEEP:
210	break;
211
212	default:
213	PUSHs (sv_2mortal (newSViv (req->result)));
214	break;
215	}
216
217
218	PUTBACK;
219	call_sv (req->callback, G_VOID | G_EVAL);
220	SPAGAIN;
221
222	if (SvTRUE (ERRSV))
223	{
224	req_free (req);
225	croak (0);
226	}
227
228	LEAVE;
229
230	errno = errorno;
231	}
232
233	static void req_free (aio_req req)
234	{
235	if (req->grp)
236	{
237	aio_req grp = req->grp;
238
239	/* unlink request */
240	req->grp_next->grp_prev = req->grp_prev;
241	req->grp_prev->grp_next = req->grp_next;
242
243	if (grp->grp_next == grp && grp->fd)
244	{
245	req_invoke (grp);
246	req_free (grp);
247	}	249	}
248	}	250	}
249		251
		252	done:
		253	req->result = 0;
		254
		255	#else
		256	errno = ENOSYS;
		257	#endif
		258	}
		259
		260	/*****************************************************************************/
		261
		262	enum {
		263	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		264	};
		265
		266	typedef eio_req *aio_req;
		267	typedef eio_req *aio_req_ornot;
		268	typedef eio_wd aio_wd;
		269
		270	static SV *on_next_submit;
		271	static int next_pri = EIO_PRI_DEFAULT;
		272	static int max_outstanding;
		273
		274	static s_epipe respipe;
		275
		276	static void req_destroy (aio_req req);
		277	static void req_cancel (aio_req req);
		278
		279	static void
		280	want_poll (void)
		281	{
		282	/* write a dummy byte to the pipe so fh becomes ready */
		283	s_epipe_signal (&respipe);
		284	}
		285
		286	static void
		287	done_poll (void)
		288	{
		289	/* read any signals sent by the worker threads */
		290	s_epipe_drain (&respipe);
		291	}
		292
		293	/* must be called at most once */
		294	static SV *
		295	req_sv (aio_req req, HV *stash)
		296	{
		297	if (!req->self)
		298	{
		299	req->self = (SV *)newHV ();
		300	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		301	}
		302
		303	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		304	}
		305
		306	static SV *
		307	newSVaio_wd (aio_wd wd)
		308	{
		309	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		310	}
		311
		312	static aio_req
		313	SvAIO_REQ (SV *sv)
		314	{
		315	MAGIC *mg;
		316
		317	if (!SvROK (sv)
		318	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		319	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		320	&& SvSTASH (SvRV (sv)) != aio_req_stash
		321	&& !sv_derived_from (sv, "IO::AIO::REQ")))
		322	croak ("object of class IO::AIO::REQ expected");
		323
		324	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		325
		326	return mg ? (aio_req)mg->mg_ptr : 0;
		327	}
		328
		329	static aio_wd
		330	SvAIO_WD (SV *sv)
		331	{
		332	if (!SvROK (sv)
		333	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		334	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		335	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		336
		337	return (aio_wd)(long)SvIVX (SvRV (sv));
		338	}
		339
		340	static void
		341	aio_grp_feed (aio_req grp)
		342	{
		343	if (grp->sv2 && SvOK (grp->sv2))
		344	{
		345	dSP;
		346
		347	ENTER;
		348	SAVETMPS;
		349	PUSHMARK (SP);
		350	XPUSHs (req_sv (grp, aio_grp_stash));
		351	PUTBACK;
		352	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		353	SPAGAIN;
		354	FREETMPS;
		355	LEAVE;
		356	}
		357	}
		358
		359	static void
		360	req_submit (eio_req *req)
		361	{
		362	eio_submit (req);
		363
		364	if (expect_false (on_next_submit))
		365	{
		366	dSP;
		367	SV *cb = sv_2mortal (on_next_submit);
		368
		369	on_next_submit = 0;
		370
		371	PUSHMARK (SP);
		372	PUTBACK;
		373	call_sv (cb, G_DISCARD | G_EVAL);
		374	}
		375	}
		376
		377	static int
		378	req_invoke (eio_req *req)
		379	{
		380	if (req->flags & FLAG_SV2_RO_OFF)
		381	SvREADONLY_off (req->sv2);
		382
		383	if (!EIO_CANCELLED (req) && req->callback)
		384	{
		385	dSP;
		386	static SV *sv_result_cache; /* caches the result integer SV */
		387	SV *sv_result;
		388
		389	ENTER;
		390	SAVETMPS;
		391	PUSHMARK (SP);
		392	EXTEND (SP, 1);
		393
		394	/* do not recreate the result IV from scratch each time */
		395	if (expect_true (sv_result_cache))
		396	{
		397	sv_result = sv_result_cache; sv_result_cache = 0;
		398	SvIV_set (sv_result, req->result);
		399	SvIOK_only (sv_result);
		400	}
		401	else
		402	{
		403	sv_result = newSViv (req->result);
		404	SvREADONLY_on (sv_result);
		405	}
		406
		407	switch (req->type)
		408	{
		409	case EIO_WD_OPEN:
		410	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		411	break;
		412
		413	case EIO_READDIR:
		414	{
		415	SV *rv = &PL_sv_undef;
		416
		417	if (req->result >= 0)
		418	{
		419	int i;
		420	char *names = (char *)req->ptr2;
		421	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		422	AV *av = newAV ();
		423
		424	av_extend (av, req->result - 1);
		425
		426	for (i = 0; i < req->result; ++i)
		427	{
		428	if (req->int1 & EIO_READDIR_DENTS)
		429	{
		430	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		431
		432	if (req->int1 & EIO_READDIR_CUSTOM2)
		433	{
		434	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		435	AV *avent = newAV ();
		436
		437	av_extend (avent, 2);
		438
		439	if (!sv_type [ent->type])
		440	{
		441	sv_type [ent->type] = newSViv (ent->type);
		442	SvREADONLY_on (sv_type [ent->type]);
		443	}
		444
		445	av_store (avent, 0, namesv);
		446	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		447	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		448
		449	av_store (av, i, newRV_noinc ((SV *)avent));
		450	}
		451	else
		452	av_store (av, i, namesv);
		453
		454	++ent;
		455	}
		456	else
		457	{
		458	SV *name = newSVpv (names, 0);
		459	av_store (av, i, name);
		460	names += SvCUR (name) + 1;
		461	}
		462	}
		463
		464	rv = sv_2mortal (newRV_noinc ((SV *)av));
		465	}
		466
		467	PUSHs (rv);
		468
		469	if (req->int1 & EIO_READDIR_CUSTOM1)
		470	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		471	}
		472	break;
		473
		474	case EIO_OPEN:
		475	{
		476	/* convert fd to fh */
		477	SV *fh = &PL_sv_undef;
		478
		479	if (req->result >= 0)
		480	{
		481	GV *gv = (GV *)sv_newmortal ();
		482	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		483	char sym [64];
		484	int symlen;
		485
		486	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		487	gv_init (gv, aio_stash, sym, symlen, 0);
		488
		489	symlen = snprintf (
		490	sym,
		491	sizeof (sym),
		492	"%s&=%d",
		493	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		494	(int)req->result
		495	);
		496
		497	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		498	fh = (SV *)gv;
		499	}
		500
		501	PUSHs (fh);
		502	}
		503	break;
		504
		505	case EIO_STATVFS:
		506	case EIO_FSTATVFS:
		507	{
		508	SV *rv = &PL_sv_undef;
		509
		510	#ifndef _WIN32
		511	if (req->result >= 0)
		512	{
		513	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		514	HV *hv = newHV ();
		515	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		516	* chooses to make it a struct.
		517	*/
		518	unsigned long fsid = 0;
		519	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		520
		521	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		522
		523	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		524	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		525	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		526	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		527	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		528	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		529	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		530	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		531	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		532	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		533	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		534	}
		535	#endif
		536
		537	PUSHs (rv);
		538	}
		539
		540	break;
		541
		542	case EIO_GROUP:
		543	req->int1 = 2; /* mark group as finished */
		544
		545	if (req->sv1)
		546	{
		547	int i;
		548	AV *av = (AV *)req->sv1;
		549
		550	EXTEND (SP, AvFILL (av) + 1);
		551	for (i = 0; i <= AvFILL (av); ++i)
		552	PUSHs (*av_fetch (av, i, 0));
		553	}
		554	break;
		555
		556	case EIO_NOP:
		557	case EIO_BUSY:
		558	break;
		559
		560	case EIO_READLINK:
		561	case EIO_REALPATH:
		562	if (req->result > 0)
		563	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		564	break;
		565
		566	case EIO_STAT:
		567	case EIO_LSTAT:
		568	case EIO_FSTAT:
		569	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		570
		571	if (!(PL_laststatval = req->result))
		572	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		573	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		574
		575	PUSHs (sv_result);
		576	break;
		577
		578	case EIO_SEEK:
		579	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		580	break;
		581
		582	case EIO_READ:
		583	{
		584	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		585	*SvEND (req->sv2) = 0;
		586	SvPOK_only (req->sv2);
		587	SvSETMAGIC (req->sv2);
		588	PUSHs (sv_result);
		589	}
		590	break;
		591
		592	case EIO_CUSTOM:
		593	if (req->feed == fiemap)
		594	{
		595	#if HAVE_FIEMAP
		596	if (!req->result)
		597	{
		598	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		599
		600	if (fiemap->fm_extent_count)
		601	{
		602	AV *av = newAV ();
		603	int i;
		604
		605	while (fiemap->fm_mapped_extents)
		606	{
		607	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		608	AV *ext_av = newAV ();
		609
		610	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		611	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		612	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		613	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		614
		615	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		616	}
		617
		618	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		619	}
		620	else
		621	{
		622	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		623	PUSHs (sv_result);
		624	}
		625	}
		626	#endif
		627	}
		628	else
		629	PUSHs (sv_result);
		630	break;
		631
		632	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		633	if (req->result > 0)
		634	SvIV_set (sv_result, 0);
		635	/* FALLTHROUGH */
		636
		637	default:
		638	PUSHs (sv_result);
		639	break;
		640	}
		641
		642	errno = req->errorno;
		643
		644	PUTBACK;
		645	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		646	SPAGAIN;
		647
		648	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		649	SvREFCNT_dec (sv_result);
		650	else
		651	sv_result_cache = sv_result;
		652
		653	FREETMPS;
		654	LEAVE;
		655
		656	PUTBACK;
		657	}
		658
		659	return !!SvTRUE (ERRSV);
		660	}
		661
		662	static void
		663	req_destroy (aio_req req)
		664	{
250	if (req->self)	665	if (req->self)
251	{	666	{
252	sv_unmagic (req->self, PERL_MAGIC_ext);	667	sv_unmagic (req->self, PERL_MAGIC_ext);
253	SvREFCNT_dec (req->self);	668	SvREFCNT_dec (req->self);
254	}	669	}
255		670
256	if (req->data)
257	SvREFCNT_dec (req->data);
258
259	if (req->fh)
260	SvREFCNT_dec (req->fh);	671	SvREFCNT_dec (req->sv1);
261
262	if (req->fh2)
263	SvREFCNT_dec (req->fh2);	672	SvREFCNT_dec (req->sv2);
264		673	SvREFCNT_dec (req->sv3);
265	if (req->statdata)	674	SvREFCNT_dec (req->sv4);
266	Safefree (req->statdata);
267
268	if (req->callback)
269	SvREFCNT_dec (req->callback);	675	SvREFCNT_dec (req->callback);
270		676
271	if (req->type == REQ_READDIR && req->result >= 0)
272	free (req->data2ptr);
273
274	Safefree (req);	677	free (req);
275	}	678	}
276		679
277	static void req_cancel (aio_req req)	680	static void
		681	req_cancel_subs (aio_req grp)
278	{	682	{
279	req->cancelled = 1;
280
281	if (req->type == REQ_GROUP)	683	if (grp->type != EIO_GROUP)
		684	return;
		685
		686	SvREFCNT_dec (grp->sv2);
		687	grp->sv2 = 0;
		688
		689	eio_grp_cancel (grp);
		690	}
		691
		692	static void ecb_cold
		693	create_respipe (void)
		694	{
		695	if (s_epipe_renew (&respipe))
		696	croak ("IO::AIO: unable to initialize result pipe");
		697	}
		698
		699	static void
		700	poll_wait (void)
		701	{
		702	while (eio_nreqs ())
282	{	703	{
283	aio_req sub;	704	int size;
284		705
285	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	706	X_LOCK (reslock);
286	req_cancel (sub);	707	size = res_queue.size;
		708	X_UNLOCK (reslock);
		709
		710	if (size)
		711	return;
		712
		713	etp_maybe_start_thread ();
		714
		715	s_epipe_wait (&respipe);
287	}	716	}
288	}	717	}
289		718
290	static int poll_cb ()	719	static int
		720	poll_cb (void)
291	{	721	{
292	dSP;
293	int count = 0;
294	int do_croak = 0;
295	aio_req req;
296
297	for (;;)	722	for (;;)
298	{	723	{
299	pthread_mutex_lock (&reslock);	724	int res = eio_poll ();
300	req = ress;
301		725
302	if (req)	726	if (res > 0)
		727	croak (0);
		728
		729	if (!max_outstanding || max_outstanding > eio_nreqs ())
		730	return res;
		731
		732	poll_wait ();
		733	}
		734	}
		735
		736	static void ecb_cold
		737	reinit (void)
		738	{
		739	create_respipe ();
		740
		741	if (eio_init (want_poll, done_poll) < 0)
		742	croak ("IO::AIO: unable to initialise eio library");
		743	}
		744
		745	/*****************************************************************************/
		746
		747	#if !_POSIX_MAPPED_FILES
		748	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		749	# define munmap(addr,length) EIO_ENOSYS ()
		750	#endif
		751
		752	#if !_POSIX_MEMORY_PROTECTION
		753	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		754	# define PROT_NONE 0
		755	# define PROT_WRITE 0
		756	# define MAP_PRIVATE 0
		757	# define MAP_SHARED 0
		758	# define MAP_FIXED 0
		759	#endif
		760
		761	#define MMAP_MAGIC PERL_MAGIC_ext
		762
		763	static int ecb_cold
		764	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		765	{
		766	int old_errno = errno;
		767	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		768	errno = old_errno;
		769
		770	mg->mg_obj = 0; /* just in case */
		771
		772	SvREADONLY_off (sv);
		773
		774	if (SvPVX (sv) != mg->mg_ptr)
		775	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		776
		777	SvCUR_set (sv, 0);
		778	SvPVX (sv) = 0;
		779	SvOK_off (sv);
		780
		781	return 0;
		782	}
		783
		784	static MGVTBL mmap_vtbl = {
		785	0, 0, 0, 0, mmap_free
		786	};
		787
		788	/*****************************************************************************/
		789
		790	static SV *
		791	get_cb (SV *cb_sv)
		792	{
		793	SvGETMAGIC (cb_sv);
		794	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		795	}
		796
		797	static aio_req ecb_noinline
		798	dreq (SV *callback)
		799	{
		800	SV *cb_cv;
		801	aio_req req;
		802	int req_pri = next_pri;
		803	next_pri = EIO_PRI_DEFAULT;
		804
		805	cb_cv = get_cb (callback);
		806
		807	req = calloc (sizeof (*req), 1);
		808	if (!req)
		809	croak ("out of memory during eio_req allocation");
		810
		811	req->callback = SvREFCNT_inc (cb_cv);
		812	req->pri = req_pri;
		813
		814	return req;
		815	}
		816
		817	#define dREQ \
		818	aio_req req = dreq (callback); \
		819
		820	#define REQ_SEND \
		821	PUTBACK; \
		822	req_submit (req); \
		823	SPAGAIN; \
		824	\
		825	if (GIMME_V != G_VOID) \
		826	XPUSHs (req_sv (req, aio_req_stash));
		827
		828	ecb_inline void
		829	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		830	{
		831	if (expect_false (SvROK (path)))
		832	{
		833	SV *rv = SvRV (path);
		834	SV *wdob;
		835
		836	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
303	{	837	{
304	ress = req->next;	838	path = AvARRAY (rv)[1];
		839	wdob = AvARRAY (rv)[0];
305		840
306	if (!ress)	841	if (SvOK (wdob))
307	{	842	{
308	/* read any signals sent by the worker threads */	843	*wd = SvAIO_WD (wdob);
309	char buf [32];	844	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
310	while (read (respipe [0], buf, 32) == 32)
311	;
312
313	rese = 0;
314	}	845	}
		846	else
		847	*wd = EIO_INVALID_WD;
315	}	848	}
316		849	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
317	pthread_mutex_unlock (&reslock);
318
319	if (!req)
320	break;
321
322	nreqs--;
323
324	if (req->type == REQ_QUIT)
325	started--;
326	else if (req->type == REQ_GROUP && req->grp_next != req)
327	{	850	{
328	req->fd = 1; /* mark request as delayed */	851	*wd = (aio_wd)(long)SvIVX (rv);
329	continue;	852	*wdsv = SvREFCNT_inc_NN (rv);
		853	*ptr = ".";
		854	return; /* path set to "." */
330	}	855	}
331	else	856	else
332	{	857	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
333	if (req->type == REQ_READ)
334	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
335
336	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
337	SvREADONLY_off (req->data);
338
339	if (req->statdata)
340	{
341	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
342	PL_laststatval = req->result;
343	PL_statcache = *(req->statdata);
344	}
345
346	req_invoke (req);
347
348	count++;
349	}
350
351	req_free (req);
352	}	858	}
353		859
354	return count;	860	*pathsv = newSVsv (path);
		861	*ptr = SvPVbyte_nolen (*pathsv);
355	}	862	}
356		863
357	static void *aio_proc(void *arg);	864	static void ecb_noinline
358		865	req_set_path1 (aio_req req, SV *path)
359	static void start_thread (void)
360	{	866	{
361	sigset_t fullsigset, oldsigset;	867	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
362	pthread_t tid;
363	pthread_attr_t attr;
364
365	pthread_attr_init (&attr);
366	pthread_attr_setstacksize (&attr, STACKSIZE);
367	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
368
369	sigfillset (&fullsigset);
370	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
371
372	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
373	started++;
374
375	sigprocmask (SIG_SETMASK, &oldsigset, 0);
376	}	868	}
377		869
378	static void req_send (aio_req req)	870	static void ecb_noinline
		871	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
379	{	872	{
380	while (started < wanted && nreqs >= started)	873	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
381	start_thread ();
382		874
383	nreqs++;	875	switch (SvTYPE (rv))
384
385	pthread_mutex_lock (&reqlock);
386
387	req->next = 0;
388
389	if (reqe)
390	{	876	{
391	reqe->next = req;	877	case SVt_PVIO:
392	reqe = req;	878	case SVt_PVLV:
		879	case SVt_PVGV:
		880	req->type = type_fh;
		881	req->sv1 = newSVsv (fh_or_path);
		882	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		883	break;
		884
		885	default:
		886	req->type = type_path;
		887	req_set_path1 (req, fh_or_path);
		888	break;
393	}	889	}
394	else
395	reqe = reqs = req;
396
397	pthread_cond_signal (&reqwait);
398	pthread_mutex_unlock (&reqlock);
399
400	if (nreqs > max_outstanding)
401	for (;;)
402	{
403	poll_cb ();
404
405	if (nreqs <= max_outstanding)
406	break;
407
408	poll_wait ();
409	}
410	}	890	}
411		891
412	static void end_thread (void)	892	XS(boot_IO__AIO) ecb_cold;
413	{
414	aio_req req;
415	Newz (0, req, 1, aio_cb);
416	req->type = REQ_QUIT;
417		893
418	req_send (req);	894	MODULE = IO::AIO PACKAGE = IO::AIO
419	}
420		895
421	static void min_parallel (int nthreads)	896	PROTOTYPES: ENABLE
422	{
423	if (wanted < nthreads)
424	wanted = nthreads;
425	}
426		897
427	static void max_parallel (int nthreads)	898	BOOT:
428	{	899	{
429	int cur = started;	900	static const struct {
		901	const char *name;
		902	IV iv;
		903	} *civ, const_iv[] = {
		904	# define const_niv(name, value) { # name, (IV) value },
		905	# define const_iv(name) { # name, (IV) name },
		906	# define const_eio(name) { # name, (IV) EIO_ ## name },
430		907
431	if (wanted > nthreads)	908	/* you have to re-run ./gendef0 after adding/Removing any constants here */
432	wanted = nthreads;
433		909
434	while (cur > wanted)	910	const_iv (ENOSYS)
435	{	911	const_iv (EXDEV)
436	end_thread ();	912	const_iv (EBADR)
437	cur--;
438	}
439		913
440	while (started > wanted)	914	const_iv (O_RDONLY)
441	{	915	const_iv (O_WRONLY)
442	poll_wait ();	916	const_iv (O_RDWR)
443	poll_cb ();	917	const_iv (O_CREAT)
444	}	918	const_iv (O_TRUNC)
445	}	919	const_iv (O_EXCL)
		920	const_iv (O_APPEND)
446		921
447	static void create_pipe ()	922	const_iv (O_ASYNC)
448	{	923	const_iv (O_DIRECT)
449	if (pipe (respipe))	924	const_iv (O_NOATIME)
450	croak ("unable to initialize result pipe");
451		925
452	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	926	const_iv (O_CLOEXEC)
453	croak ("cannot set result pipe to nonblocking mode");	927	const_iv (O_NOCTTY)
		928	const_iv (O_NOFOLLOW)
		929	const_iv (O_NONBLOCK)
		930	const_iv (O_EXEC)
		931	const_iv (O_SEARCH)
		932	const_iv (O_DIRECTORY)
		933	const_iv (O_DSYNC)
		934	const_iv (O_RSYNC)
		935	const_iv (O_SYNC)
		936	const_iv (O_TTY_INIT)
454		937
455	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	938	const_iv (S_IFIFO)
456	croak ("cannot set result pipe to nonblocking mode");	939	const_iv (S_IFCHR)
457	}	940	const_iv (S_IFBLK)
		941	const_iv (S_IFLNK)
		942	const_iv (S_IFREG)
		943	const_iv (S_IFDIR)
		944	const_iv (S_IFWHT)
		945	const_iv (S_IFSOCK)
		946	const_iv (S_IFMT)
458		947
459	/*****************************************************************************/	948	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
460	/* work around various missing functions */	949	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		950	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		951	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		952	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		953	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
461		954
462	#if !HAVE_PREADWRITE	955	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
463	# define pread aio_pread	956	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
464	# define pwrite aio_pwrite	957	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		958	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		959	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
465		960
466	/*	961	const_iv (ST_RDONLY)
467	* make our pread/pwrite safe against themselves, but not against	962	const_iv (ST_NOSUID)
468	* normal read/write by using a mutex. slows down execution a lot,	963	const_iv (ST_NODEV)
469	* but that's your problem, not mine.	964	const_iv (ST_NOEXEC)
470	*/	965	const_iv (ST_SYNCHRONOUS)
471	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	966	const_iv (ST_MANDLOCK)
		967	const_iv (ST_WRITE)
		968	const_iv (ST_APPEND)
		969	const_iv (ST_IMMUTABLE)
		970	const_iv (ST_NOATIME)
		971	const_iv (ST_NODIRATIME)
		972	const_iv (ST_RELATIME)
472		973
473	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	974	const_iv (PROT_NONE)
474	{	975	const_iv (PROT_EXEC)
475	ssize_t res;	976	const_iv (PROT_READ)
476	off_t ooffset;	977	const_iv (PROT_WRITE)
477		978
478	pthread_mutex_lock (&preadwritelock);	979	/*const_iv (MAP_FIXED)*/
479	ooffset = lseek (fd, 0, SEEK_CUR);	980	const_iv (MAP_PRIVATE)
480	lseek (fd, offset, SEEK_SET);	981	const_iv (MAP_SHARED)
481	res = read (fd, buf, count);	982	const_iv (MAP_ANONYMOUS)
482	lseek (fd, ooffset, SEEK_SET);
483	pthread_mutex_unlock (&preadwritelock);
484		983
485	return res;	984	/* linuxish */
486	}	985	const_iv (MAP_HUGETLB)
		986	const_iv (MAP_LOCKED)
		987	const_iv (MAP_NORESERVE)
		988	const_iv (MAP_POPULATE)
		989	const_iv (MAP_NONBLOCK)
487		990
488	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	991	const_iv (FIEMAP_FLAG_SYNC)
489	{	992	const_iv (FIEMAP_FLAG_XATTR)
490	ssize_t res;	993	const_iv (FIEMAP_FLAGS_COMPAT)
491	off_t ooffset;	994	const_iv (FIEMAP_EXTENT_LAST)
		995	const_iv (FIEMAP_EXTENT_UNKNOWN)
		996	const_iv (FIEMAP_EXTENT_DELALLOC)
		997	const_iv (FIEMAP_EXTENT_ENCODED)
		998	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		999	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1000	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1001	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1002	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1003	const_iv (FIEMAP_EXTENT_MERGED)
		1004	const_iv (FIEMAP_EXTENT_SHARED)
492		1005
493	pthread_mutex_lock (&preadwritelock);	1006	const_iv (SPLICE_F_MOVE)
494	ooffset = lseek (fd, 0, SEEK_CUR);	1007	const_iv (SPLICE_F_NONBLOCK)
495	lseek (fd, offset, SEEK_SET);	1008	const_iv (SPLICE_F_MORE)
496	res = write (fd, buf, count);	1009	const_iv (SPLICE_F_GIFT)
497	lseek (fd, offset, SEEK_SET);
498	pthread_mutex_unlock (&preadwritelock);
499		1010
500	return res;	1011	const_iv (SEEK_DATA)
501	}	1012	const_iv (SEEK_HOLE)
502	#endif
503		1013
504	#if !HAVE_FDATASYNC	1014	/* libeio constants */
505	# define fdatasync fsync	1015	const_eio (SEEK_SET)
506	#endif	1016	const_eio (SEEK_CUR)
		1017	const_eio (SEEK_END)
507		1018
508	#if !HAVE_READAHEAD	1019	const_eio (MCL_FUTURE)
509	# define readahead aio_readahead	1020	const_eio (MCL_CURRENT)
510		1021
511	static ssize_t readahead (int fd, off_t offset, size_t count)	1022	const_eio (MS_ASYNC)
512	{	1023	const_eio (MS_INVALIDATE)
513	char readahead_buf[4096];	1024	const_eio (MS_SYNC)
514		1025
515	while (count > 0)	1026	const_eio (MT_MODIFY)
516	{
517	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
518		1027
519	pread (fd, readahead_buf, len, offset);	1028	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
520	offset += len;	1029	const_eio (SYNC_FILE_RANGE_WRITE)
521	count -= len;	1030	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
522	}
523		1031
524	errno = 0;	1032	const_eio (FALLOC_FL_KEEP_SIZE)
525	}	1033	const_eio (FALLOC_FL_PUNCH_HOLE)
526	#endif
527		1034
528	#if !HAVE_READDIR_R	1035	const_eio (READDIR_DENTS)
529	# define readdir_r aio_readdir_r	1036	const_eio (READDIR_DIRS_FIRST)
		1037	const_eio (READDIR_STAT_ORDER)
		1038	const_eio (READDIR_FOUND_UNKNOWN)
530		1039
531	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1040	const_eio (DT_UNKNOWN)
532		1041	const_eio (DT_FIFO)
533	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1042	const_eio (DT_CHR)
534	{	1043	const_eio (DT_DIR)
535	struct dirent *e;	1044	const_eio (DT_BLK)
536	int errorno;	1045	const_eio (DT_REG)
537		1046	const_eio (DT_LNK)
538	pthread_mutex_lock (&readdirlock);	1047	const_eio (DT_SOCK)
539		1048	const_eio (DT_WHT)
540	e = readdir (dirp);
541	errorno = errno;
542
543	if (e)
544	{
545	*res = ent;
546	strcpy (ent->d_name, e->d_name);
547	}
548	else
549	*res = 0;
550
551	pthread_mutex_unlock (&readdirlock);
552
553	errno = errorno;
554	return e ? 0 : -1;
555	}
556	#endif
557
558	/* sendfile always needs emulation */
559	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
560	{
561	ssize_t res;
562
563	if (!count)
564	return 0;
565
566	#if HAVE_SENDFILE
567	# if __linux
568	res = sendfile (ofd, ifd, &offset, count);
569
570	# elif __freebsd
571	/*
572	* Of course, the freebsd sendfile is a dire hack with no thoughts
573	* wasted on making it similar to other I/O functions.
574	*/
575	{
576	off_t sbytes;
577	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
578
579	if (res < 0 && sbytes)
580	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
581	res = sbytes;
582	}	1049	};
583		1050
584	# elif __hpux	1051	aio_stash = gv_stashpv ("IO::AIO" , 1);
585	res = sendfile (ofd, ifd, offset, count, 0, 0);	1052	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1053	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1054	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
586		1055
587	# elif __solaris	1056	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
588	{	1057	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
589	struct sendfilevec vec;
590	size_t sbytes;
591		1058
592	vec.sfv_fd = ifd;	1059	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
593	vec.sfv_flag = 0;
594	vec.sfv_off = offset;
595	vec.sfv_len = count;
596		1060
597	res = sendfilev (ofd, &vec, 1, &sbytes);	1061	reinit ();
		1062	}
598		1063
599	if (res < 0 && sbytes)	1064	void
		1065	reinit ()
		1066	PROTOTYPE:
		1067
		1068	void
		1069	max_poll_reqs (unsigned int nreqs)
		1070	PROTOTYPE: $
		1071	CODE:
		1072	eio_set_max_poll_reqs (nreqs);
		1073
		1074	void
		1075	max_poll_time (double nseconds)
		1076	PROTOTYPE: $
		1077	CODE:
		1078	eio_set_max_poll_time (nseconds);
		1079
		1080	void
		1081	min_parallel (unsigned int nthreads)
		1082	PROTOTYPE: $
		1083	CODE:
		1084	eio_set_min_parallel (nthreads);
		1085
		1086	void
		1087	max_parallel (unsigned int nthreads)
		1088	PROTOTYPE: $
		1089	CODE:
		1090	eio_set_max_parallel (nthreads);
		1091
		1092	void
		1093	max_idle (unsigned int nthreads)
		1094	PROTOTYPE: $
		1095	CODE:
		1096	eio_set_max_idle (nthreads);
		1097
		1098	void
		1099	idle_timeout (unsigned int seconds)
		1100	PROTOTYPE: $
		1101	CODE:
		1102	eio_set_idle_timeout (seconds);
		1103
		1104	void
		1105	max_outstanding (unsigned int maxreqs)
		1106	PROTOTYPE: $
		1107	CODE:
		1108	max_outstanding = maxreqs;
		1109
		1110	void
		1111	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1112	PPCODE:
		1113	{
		1114	dREQ;
		1115
		1116	req->type = EIO_WD_OPEN;
		1117	req_set_path1 (req, pathname);
		1118
		1119	REQ_SEND;
		1120	}
		1121
		1122	void
		1123	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1124	PPCODE:
		1125	{
		1126	dREQ;
		1127
		1128	req->type = EIO_OPEN;
		1129	req_set_path1 (req, pathname);
		1130	req->int1 = flags;
		1131	req->int2 = mode;
		1132
		1133	REQ_SEND;
		1134	}
		1135
		1136	void
		1137	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1138	ALIAS:
		1139	aio_fsync = EIO_FSYNC
		1140	aio_fdatasync = EIO_FDATASYNC
		1141	aio_syncfs = EIO_SYNCFS
		1142	PPCODE:
		1143	{
		1144	int fd = s_fileno_croak (fh, 0);
		1145	dREQ;
		1146
		1147	req->type = ix;
		1148	req->sv1 = newSVsv (fh);
		1149	req->int1 = fd;
		1150
		1151	REQ_SEND;
		1152	}
		1153
		1154	void
		1155	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1156	PPCODE:
		1157	{
		1158	int fd = s_fileno_croak (fh, 0);
		1159	dREQ;
		1160
		1161	req->type = EIO_SYNC_FILE_RANGE;
		1162	req->sv1 = newSVsv (fh);
		1163	req->int1 = fd;
		1164	req->offs = offset;
600	res = sbytes;	1165	req->size = nbytes;
601	}	1166	req->int2 = flags;
602		1167
603	# endif	1168	REQ_SEND;
		1169	}
		1170
		1171	void
		1172	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1173	PPCODE:
		1174	{
		1175	int fd = s_fileno_croak (fh, 0);
		1176	dREQ;
		1177
		1178	req->type = EIO_FALLOCATE;
		1179	req->sv1 = newSVsv (fh);
		1180	req->int1 = fd;
		1181	req->int2 = mode;
		1182	req->offs = offset;
		1183	req->size = len;
		1184
		1185	REQ_SEND;
		1186	}
		1187
		1188	void
		1189	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1190	PPCODE:
		1191	{
		1192	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1193	int fd = s_fileno_croak (fh, 0);
		1194	dREQ;
		1195
		1196	if (expect_false (close_fd < 0))
		1197	{
		1198	int pipefd [2];
		1199
		1200	if (
		1201	#ifdef _WIN32
		1202	_pipe (pipefd, 1, _O_BINARY) < 0
604	#else	1203	#else
605	res = -1;	1204	pipe (pipefd) < 0
606	errno = ENOSYS;	1205	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
607	#endif	1206	#endif
608		1207	|| close (pipefd [1]) < 0
609	if (res < 0
610	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
611	#if __solaris
612	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
613	#endif
614	)
615	)
616	{
617	/* emulate sendfile. this is a major pain in the ass */
618	char buf[4096];
619	res = 0;
620
621	while (count)
622	{
623	ssize_t cnt;
624
625	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
626
627	if (cnt <= 0)
628	{	1208	)
629	if (cnt && !res) res = -1;	1209	abort (); /*D*/
630	break;
631	}
632		1210
633	cnt = write (ofd, buf, cnt);	1211	close_fd = pipefd [0];
634
635	if (cnt <= 0)
636	{
637	if (cnt && !res) res = -1;
638	break;
639	}
640
641	offset += cnt;
642	res += cnt;
643	count -= cnt;
644	}
645	}
646
647	return res;
648	}
649
650	/* read a full directory */
651	static int scandir_ (const char *path, void **namesp)
652	{
653	DIR *dirp = opendir (path);
654	union
655	{
656	struct dirent d;
657	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
658	} u;
659	struct dirent *entp;
660	char *name, *names;
661	int memlen = 4096;
662	int memofs = 0;
663	int res = 0;
664	int errorno;
665
666	if (!dirp)
667	return -1;
668
669	names = malloc (memlen);
670
671	for (;;)
672	{
673	errno = 0, readdir_r (dirp, &u.d, &entp);
674
675	if (!entp)
676	break;
677
678	name = entp->d_name;
679
680	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
681	{
682	int len = strlen (name) + 1;
683
684	res++;
685
686	while (memofs + len > memlen)
687	{
688	memlen *= 2;
689	names = realloc (names, memlen);
690	if (!names)
691	break;
692	}
693
694	memcpy (names + memofs, name, len);
695	memofs += len;
696	}
697	}
698
699	errorno = errno;
700	closedir (dirp);
701
702	if (errorno)
703	{
704	free (names);
705	errno = errorno;
706	res = -1;
707	}
708
709	*namesp = (void *)names;
710	return res;
711	}
712
713	/*****************************************************************************/
714
715	static void *aio_proc (void *thr_arg)
716	{
717	aio_req req;
718	int type;
719
720	do
721	{
722	pthread_mutex_lock (&reqlock);
723
724	for (;;)
725	{
726	req = reqs;
727
728	if (reqs)
729	{
730	reqs = reqs->next;
731	if (!reqs) reqe = 0;
732	}
733
734	if (req)
735	break;
736
737	pthread_cond_wait (&reqwait, &reqlock);
738	}
739
740	pthread_mutex_unlock (&reqlock);
741
742	errno = 0; /* strictly unnecessary */
743
744	if (!req->cancelled)
745	switch (req->type)
746	{
747	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
748	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
749
750	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
751	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
752
753	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
754	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
755	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
756
757	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
758	case REQ_CLOSE: req->result = close (req->fd); break;
759	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
760	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
761	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
762	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
763	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
764
765	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
766	case REQ_FSYNC: req->result = fsync (req->fd); break;
767	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
768
769	case REQ_SLEEP:
770	{
771	struct timeval tv;
772
773	tv.tv_sec = req->fd;
774	tv.tv_usec = req->fd2;
775
776	req->result = select (0, 0, 0, 0, &tv);
777	}
778
779	case REQ_QUIT:
780	break;
781
782	default:
783	req->result = ENOSYS;
784	break;
785	}	1212	}
786		1213
787	req->errorno = errno;	1214	req->type = EIO_DUP2;
788		1215	req->int1 = close_fd;
789	pthread_mutex_lock (&reslock);	1216	req->sv2 = newSVsv (fh);
790
791	req->next = 0;	1217	req->int2 = fd;
792		1218
793	if (rese)	1219	REQ_SEND;
794	{
795	rese->next = req;
796	rese = req;
797	}
798	else
799	{
800	rese = ress = req;
801
802	/* write a dummy byte to the pipe so fh becomes ready */
803	write (respipe [1], &respipe, 1);
804	}
805
806	pthread_mutex_unlock (&reslock);
807	}
808	while (type != REQ_QUIT);
809
810	return 0;
811	}	1220	}
812		1221
813	/*****************************************************************************/
814
815	static void atfork_prepare (void)
816	{
817	pthread_mutex_lock (&reqlock);
818	pthread_mutex_lock (&reslock);
819	#if !HAVE_PREADWRITE
820	pthread_mutex_lock (&preadwritelock);
821	#endif
822	#if !HAVE_READDIR_R
823	pthread_mutex_lock (&readdirlock);
824	#endif
825	}
826
827	static void atfork_parent (void)
828	{
829	#if !HAVE_READDIR_R
830	pthread_mutex_unlock (&readdirlock);
831	#endif
832	#if !HAVE_PREADWRITE
833	pthread_mutex_unlock (&preadwritelock);
834	#endif
835	pthread_mutex_unlock (&reslock);
836	pthread_mutex_unlock (&reqlock);
837	}
838
839	static void atfork_child (void)
840	{
841	aio_req prv;
842
843	started = 0;
844
845	while (reqs)
846	{
847	prv = reqs;
848	reqs = prv->next;
849	req_free (prv);
850	}
851
852	reqs = reqe = 0;
853
854	while (ress)
855	{
856	prv = ress;
857	ress = prv->next;
858	req_free (prv);
859	}
860
861	ress = rese = 0;
862
863	close (respipe [0]);
864	close (respipe [1]);
865	create_pipe ();
866
867	atfork_parent ();
868	}
869
870	#define dREQ \
871	aio_req req; \
872	\
873	if (SvOK (callback) && !SvROK (callback)) \
874	croak ("callback must be undef or of reference type"); \
875	\
876	Newz (0, req, 1, aio_cb); \
877	if (!req) \
878	croak ("out of memory during aio_req allocation"); \
879	\
880	req->callback = newSVsv (callback)
881
882	#define REQ_SEND \
883	req_send (req); \
884	\
885	if (GIMME_V != G_VOID) \
886	XPUSHs (req_sv (req, AIO_REQ_KLASS));
887
888	MODULE = IO::AIO PACKAGE = IO::AIO
889
890	PROTOTYPES: ENABLE
891
892	BOOT:
893	{
894	HV *stash = gv_stashpv ("IO::AIO", 1);
895	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
896	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
897	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
898
899	create_pipe ();
900	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
901	}
902
903	void	1222	void
904	min_parallel (nthreads)	1223	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
905	int nthreads
906	PROTOTYPE: $
907
908	void
909	max_parallel (nthreads)
910	int nthreads
911	PROTOTYPE: $
912
913	int
914	max_outstanding (nreqs)
915	int nreqs
916	PROTOTYPE: $
917	CODE:	1224	PPCODE:
918	RETVAL = max_outstanding;
919	max_outstanding = nreqs;
920
921	void
922	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
923	SV * pathname
924	int flags
925	int mode
926	SV * callback
927	PROTOTYPE: $$$;$
928	PPCODE:
929	{	1225	{
		1226	int fd = s_fileno_croak (fh, 0);
930	dREQ;	1227	dREQ;
931		1228
932	req->type = REQ_OPEN;	1229	req->type = EIO_SEEK;
933	req->data = newSVsv (pathname);	1230	req->sv1 = newSVsv (fh);
934	req->dataptr = SvPVbyte_nolen (req->data);	1231	req->int1 = fd;
935	req->fd = flags;	1232	req->offs = SvVAL64 (offset);
936	req->mode = mode;	1233	req->int2 = whence;
937		1234
938	REQ_SEND;	1235	REQ_SEND;
939	}	1236	}
940		1237
941	void	1238	void
942	aio_close (fh,callback=&PL_sv_undef)	1239	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
943	SV * fh
944	SV * callback
945	PROTOTYPE: $;$
946	ALIAS:	1240	ALIAS:
947	aio_close = REQ_CLOSE
948	aio_fsync = REQ_FSYNC
949	aio_fdatasync = REQ_FDATASYNC
950	PPCODE:
951	{
952	dREQ;
953
954	req->type = ix;
955	req->fh = newSVsv (fh);
956	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
957
958	REQ_SEND (req);
959	}
960
961	void
962	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
963	SV * fh
964	UV offset
965	UV length
966	SV * data
967	UV dataoffset
968	SV * callback
969	ALIAS:
970	aio_read = REQ_READ	1241	aio_read = EIO_READ
971	aio_write = REQ_WRITE	1242	aio_write = EIO_WRITE
972	PROTOTYPE: $$$$$;$
973	PPCODE:	1243	PPCODE:
974	{	1244	{
975	aio_req req;
976	STRLEN svlen;	1245	STRLEN svlen;
		1246	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
977	char *svptr = SvPVbyte (data, svlen);	1247	char *svptr = SvPVbyte (data, svlen);
978		1248	UV len = SvUV (length);
979	SvUPGRADE (data, SVt_PV);
980	SvPOK_on (data);
981		1249
982	if (dataoffset < 0)	1250	if (dataoffset < 0)
983	dataoffset += svlen;	1251	dataoffset += svlen;
984		1252
985	if (dataoffset < 0 || dataoffset > svlen)	1253	if (dataoffset < 0 || dataoffset > svlen)
986	croak ("data offset outside of string");	1254	croak ("dataoffset outside of data scalar");
987		1255
988	if (ix == REQ_WRITE)	1256	if (ix == EIO_WRITE)
989	{	1257	{
990	/* write: check length and adjust. */	1258	/* write: check length and adjust. */
991	if (length < 0 || length + dataoffset > svlen)	1259	if (!SvOK (length) || len + dataoffset > svlen)
992	length = svlen - dataoffset;	1260	len = svlen - dataoffset;
993	}	1261	}
994	else	1262	else
995	{	1263	{
996	/* read: grow scalar as necessary */	1264	/* read: check type and grow scalar as necessary */
		1265	SvUPGRADE (data, SVt_PV);
		1266	if (SvLEN (data) >= SvCUR (data))
997	svptr = SvGROW (data, length + dataoffset);	1267	svptr = SvGROW (data, len + dataoffset + 1);
		1268	else if (SvCUR (data) < len + dataoffset)
		1269	croak ("length + dataoffset outside of scalar, and cannot grow");
998	}	1270	}
999
1000	if (length < 0)
1001	croak ("length must not be negative");
1002		1271
1003	{	1272	{
1004	dREQ;	1273	dREQ;
1005		1274
1006	req->type = ix;	1275	req->type = ix;
1007	req->fh = newSVsv (fh);	1276	req->sv1 = newSVsv (fh);
1008	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1277	req->int1 = fd;
1009	: IoOFP (sv_2io (fh)));	1278	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1010	req->offset = offset;	1279	req->size = len;
1011	req->length = length;
1012	req->data = SvREFCNT_inc (data);	1280	req->sv2 = SvREFCNT_inc (data);
1013	req->dataptr = (char *)svptr + dataoffset;	1281	req->ptr2 = (char *)svptr + dataoffset;
		1282	req->stroffset = dataoffset;
1014		1283
1015	if (!SvREADONLY (data))	1284	if (!SvREADONLY (data))
1016	{	1285	{
1017	SvREADONLY_on (data);	1286	SvREADONLY_on (data);
1018	req->data2ptr = (void *)data;	1287	req->flags |= FLAG_SV2_RO_OFF;
1019	}	1288	}
1020		1289
1021	REQ_SEND;	1290	REQ_SEND;
1022	}	1291	}
1023	}	1292	}
1024		1293
1025	void	1294	void
1026	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1295	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1027	SV * out_fh	1296	ALIAS:
1028	SV * in_fh	1297	aio_readlink = EIO_READLINK
1029	UV in_offset	1298	aio_realpath = EIO_REALPATH
1030	UV length
1031	SV * callback
1032	PROTOTYPE: $$$$;$
1033	PPCODE:	1299	PPCODE:
1034	{	1300	{
		1301	dREQ;
		1302
		1303	req->type = ix;
		1304	req_set_path1 (req, pathname);
		1305
		1306	REQ_SEND;
		1307	}
		1308
		1309	void
		1310	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1311	PPCODE:
		1312	{
		1313	int ifd = s_fileno_croak (in_fh , 0);
		1314	int ofd = s_fileno_croak (out_fh, 1);
1035	dREQ;	1315	dREQ;
1036		1316
1037	req->type = REQ_SENDFILE;	1317	req->type = EIO_SENDFILE;
1038	req->fh = newSVsv (out_fh);	1318	req->sv1 = newSVsv (out_fh);
1039	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1319	req->int1 = ofd;
1040	req->fh2 = newSVsv (in_fh);	1320	req->sv2 = newSVsv (in_fh);
1041	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1321	req->int2 = ifd;
1042	req->offset = in_offset;	1322	req->offs = in_offset;
1043	req->length = length;	1323	req->size = length;
1044		1324
1045	REQ_SEND;	1325	REQ_SEND;
1046	}	1326	}
1047		1327
1048	void	1328	void
1049	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1329	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1050	SV * fh
1051	UV offset
1052	IV length
1053	SV * callback
1054	PROTOTYPE: $$$;$
1055	PPCODE:	1330	PPCODE:
1056	{	1331	{
		1332	int fd = s_fileno_croak (fh, 0);
1057	dREQ;	1333	dREQ;
1058		1334
1059	req->type = REQ_READAHEAD;	1335	req->type = EIO_READAHEAD;
1060	req->fh = newSVsv (fh);	1336	req->sv1 = newSVsv (fh);
1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1337	req->int1 = fd;
1062	req->offset = offset;	1338	req->offs = offset;
1063	req->length = length;	1339	req->size = length;
1064		1340
1065	REQ_SEND;	1341	REQ_SEND;
1066	}	1342	}
1067		1343
1068	void	1344	void
1069	aio_stat (fh_or_path,callback=&PL_sv_undef)	1345	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1070	SV * fh_or_path
1071	SV * callback
1072	ALIAS:	1346	ALIAS:
1073	aio_stat = REQ_STAT	1347	aio_stat = EIO_STAT
1074	aio_lstat = REQ_LSTAT	1348	aio_lstat = EIO_LSTAT
		1349	aio_statvfs = EIO_STATVFS
1075	PPCODE:	1350	PPCODE:
1076	{	1351	{
1077	dREQ;	1352	dREQ;
1078		1353
1079	New (0, req->statdata, 1, Stat_t);	1354	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1080	if (!req->statdata)
1081	{
1082	req_free (req);
1083	croak ("out of memory during aio_req->statdata allocation");
1084	}
1085
1086	if (SvPOK (fh_or_path))
1087	{
1088	req->type = ix;
1089	req->data = newSVsv (fh_or_path);
1090	req->dataptr = SvPVbyte_nolen (req->data);
1091	}
1092	else
1093	{
1094	req->type = REQ_FSTAT;
1095	req->fh = newSVsv (fh_or_path);
1096	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1097	}
1098		1355
1099	REQ_SEND;	1356	REQ_SEND;
1100	}	1357	}
1101		1358
		1359	UV
		1360	major (UV dev)
		1361	ALIAS:
		1362	minor = 1
		1363	CODE:
		1364	RETVAL = ix ? major (dev) : minor (dev);
		1365	OUTPUT:
		1366	RETVAL
		1367
		1368	UV
		1369	makedev (UV maj, UV min)
		1370	CODE:
		1371	RETVAL = makedev (maj, min);
		1372	OUTPUT:
		1373	RETVAL
		1374
1102	void	1375	void
		1376	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1377	PPCODE:
		1378	{
		1379	dREQ;
		1380
		1381	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1382	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1383	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1384
		1385	REQ_SEND;
		1386	}
		1387
		1388	void
		1389	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1390	PPCODE:
		1391	{
		1392	dREQ;
		1393
		1394	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1395	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1396
		1397	REQ_SEND;
		1398	}
		1399
		1400	void
		1401	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1402	PPCODE:
		1403	{
		1404	dREQ;
		1405
		1406	req->int2 = mode;
		1407	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1408
		1409	REQ_SEND;
		1410	}
		1411
		1412	void
		1413	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1414	PPCODE:
		1415	{
		1416	dREQ;
		1417
		1418	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1419	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1420	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1421
		1422	REQ_SEND;
		1423	}
		1424
		1425	void
		1426	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1427	PPCODE:
		1428	{
		1429	dREQ;
		1430
		1431	req->type = EIO_READDIR;
		1432	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1433
		1434	if (flags & EIO_READDIR_DENTS)
		1435	req->int1 |= EIO_READDIR_CUSTOM2;
		1436
		1437	req_set_path1 (req, pathname);
		1438
		1439	REQ_SEND;
		1440	}
		1441
		1442	void
		1443	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1444	PPCODE:
		1445	{
		1446	dREQ;
		1447
		1448	req->type = EIO_MKDIR;
		1449	req->int2 = mode;
		1450	req_set_path1 (req, pathname);
		1451
		1452	REQ_SEND;
		1453	}
		1454
		1455	void
1103	aio_unlink (pathname,callback=&PL_sv_undef)	1456	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1104	SV * pathname
1105	SV * callback
1106	ALIAS:	1457	ALIAS:
1107	aio_unlink = REQ_UNLINK	1458	aio_unlink = EIO_UNLINK
1108	aio_rmdir = REQ_RMDIR	1459	aio_rmdir = EIO_RMDIR
1109	aio_readdir = REQ_READDIR	1460	aio_readdir = EIO_READDIR
1110	PPCODE:	1461	PPCODE:
1111	{	1462	{
1112	dREQ;	1463	dREQ;
1113		1464
1114	req->type = ix;	1465	req->type = ix;
1115	req->data = newSVsv (pathname);	1466	req_set_path1 (req, pathname);
1116	req->dataptr = SvPVbyte_nolen (req->data);	1467
1117
1118	REQ_SEND;	1468	REQ_SEND;
1119	}	1469	}
1120		1470
1121	void	1471	void
1122	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1472	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1123	SV * oldpath
1124	SV * newpath
1125	SV * callback
1126	ALIAS:	1473	ALIAS:
1127	aio_link = REQ_LINK	1474	aio_link = EIO_LINK
1128	aio_symlink = REQ_SYMLINK	1475	aio_symlink = EIO_SYMLINK
1129	aio_rename = REQ_RENAME	1476	aio_rename = EIO_RENAME
1130	PPCODE:	1477	PPCODE:
1131	{	1478	{
		1479	eio_wd wd2 = 0;
1132	dREQ;	1480	dREQ;
1133		1481
1134	req->type = ix;	1482	req->type = ix;
1135	req->fh = newSVsv (oldpath);	1483	req_set_path1 (req, oldpath);
1136	req->data2ptr = SvPVbyte_nolen (req->fh);	1484	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1137	req->data = newSVsv (newpath);	1485	req->int3 = (long)wd2;
1138	req->dataptr = SvPVbyte_nolen (req->data);
1139		1486
1140	REQ_SEND;	1487	REQ_SEND;
1141	}	1488	}
1142		1489
1143	void	1490	void
1144	aio_sleep (delay,callback=&PL_sv_undef)	1491	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1145	double delay
1146	SV * callback
1147	PPCODE:	1492	PPCODE:
1148	{	1493	{
1149	dREQ;	1494	dREQ;
1150		1495
1151	req->type = REQ_SLEEP;	1496	req->type = EIO_MKNOD;
1152	req->fd = delay < 0. ? 0 : delay;	1497	req->int2 = (mode_t)mode;
1153	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1498	req->offs = dev;
1154		1499	req_set_path1 (req, pathname);
		1500
1155	REQ_SEND;	1501	REQ_SEND;
1156	}	1502	}
1157		1503
1158	void	1504	void
1159	aio_group (callback=&PL_sv_undef)	1505	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1160	SV * callback	1506	ALIAS:
1161	PROTOTYPE: ;$	1507	aio_mtouch = EIO_MTOUCH
		1508	aio_msync = EIO_MSYNC
1162	PPCODE:	1509	PPCODE:
1163	{	1510	{
		1511	STRLEN svlen;
		1512	char *svptr = SvPVbyte (data, svlen);
		1513	UV len = SvUV (length);
		1514
		1515	if (offset < 0)
		1516	offset += svlen;
		1517
		1518	if (offset < 0 || offset > svlen)
		1519	croak ("offset outside of scalar");
		1520
		1521	if (!SvOK (length) || len + offset > svlen)
		1522	len = svlen - offset;
		1523
		1524	{
		1525	dREQ;
		1526
		1527	req->type = ix;
		1528	req->sv2 = SvREFCNT_inc (data);
		1529	req->ptr2 = (char *)svptr + offset;
		1530	req->size = len;
		1531	req->int1 = flags;
		1532
		1533	REQ_SEND;
		1534	}
		1535	}
		1536
		1537	void
		1538	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1539	PPCODE:
		1540	{
		1541	STRLEN svlen;
		1542	char *svptr = SvPVbyte (data, svlen);
		1543	UV len = SvUV (length);
		1544
		1545	if (offset < 0)
		1546	offset += svlen;
		1547
		1548	if (offset < 0 || offset > svlen)
		1549	croak ("offset outside of scalar");
		1550
		1551	if (!SvOK (length) || len + offset > svlen)
		1552	len = svlen - offset;
		1553
		1554	{
		1555	dREQ;
		1556
		1557	req->type = EIO_MLOCK;
		1558	req->sv2 = SvREFCNT_inc (data);
		1559	req->ptr2 = (char *)svptr + offset;
		1560	req->size = len;
		1561
		1562	REQ_SEND;
		1563	}
		1564	}
		1565
		1566	void
		1567	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1568	PPCODE:
		1569	{
		1570	dREQ;
		1571
		1572	req->type = EIO_MLOCKALL;
		1573	req->int1 = flags;
		1574
		1575	REQ_SEND;
		1576	}
		1577
		1578	void
		1579	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1580	PPCODE:
		1581	{
		1582	int fd = s_fileno_croak (fh, 0);
1164	dREQ;	1583	dREQ;
		1584
		1585	req->type = EIO_CUSTOM;
		1586	req->sv1 = newSVsv (fh);
		1587	req->int1 = fd;
		1588
		1589	req->feed = fiemap;
		1590	#if HAVE_FIEMAP
		1591	/* keep our fingers crossed that the next two types are 64 bit */
		1592	req->offs = start;
		1593	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1594	req->int2 = flags;
		1595	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1596	#endif
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
		1602	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1603	PPCODE:
		1604	{
		1605	dREQ;
		1606
		1607	req->type = EIO_BUSY;
		1608	req->nv1 = delay < 0. ? 0. : delay;
		1609
		1610	REQ_SEND;
		1611	}
		1612
		1613	void
		1614	aio_group (SV *callback=&PL_sv_undef)
		1615	PPCODE:
		1616	{
		1617	dREQ;
		1618
1165	req->type = REQ_GROUP;	1619	req->type = EIO_GROUP;
1166	req->grp_next = req;
1167	req->grp_prev = req;
1168		1620
1169	req_send (req);	1621	req_submit (req);
1170	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1622	XPUSHs (req_sv (req, aio_grp_stash));
1171	}	1623	}
		1624
		1625	void
		1626	aio_nop (SV *callback=&PL_sv_undef)
		1627	ALIAS:
		1628	aio_nop = EIO_NOP
		1629	aio_sync = EIO_SYNC
		1630	PPCODE:
		1631	{
		1632	dREQ;
		1633
		1634	req->type = ix;
		1635
		1636	REQ_SEND;
		1637	}
		1638
		1639	int
		1640	aioreq_pri (int pri = 0)
		1641	CODE:
		1642	RETVAL = next_pri;
		1643	if (items > 0)
		1644	{
		1645	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1646	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1647	next_pri = pri;
		1648	}
		1649	OUTPUT:
		1650	RETVAL
		1651
		1652	void
		1653	aioreq_nice (int nice = 0)
		1654	CODE:
		1655	nice = next_pri - nice;
		1656	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1657	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1658	next_pri = nice;
1172		1659
1173	void	1660	void
1174	flush ()	1661	flush ()
1175	PROTOTYPE:
1176	CODE:	1662	CODE:
1177	while (nreqs)	1663	while (eio_nreqs ())
1178	{	1664	{
1179	poll_wait ();	1665	poll_wait ();
1180	poll_cb ();	1666	poll_cb ();
1181	}	1667	}
1182		1668
1183	void	1669	int
1184	poll()	1670	poll ()
1185	PROTOTYPE:
1186	CODE:	1671	CODE:
1187	if (nreqs)
1188	{
1189	poll_wait ();	1672	poll_wait ();
1190	poll_cb ();	1673	RETVAL = poll_cb ();
1191	}
1192
1193	int
1194	poll_fileno()
1195	PROTOTYPE:
1196	CODE:
1197	RETVAL = respipe [0];
1198	OUTPUT:	1674	OUTPUT:
1199	RETVAL	1675	RETVAL
1200		1676
1201	int	1677	int
		1678	poll_fileno ()
		1679	CODE:
		1680	RETVAL = s_epipe_fd (&respipe);
		1681	OUTPUT:
		1682	RETVAL
		1683
		1684	int
1202	poll_cb(...)	1685	poll_cb (...)
1203	PROTOTYPE:	1686	PROTOTYPE:
1204	CODE:	1687	CODE:
1205	RETVAL = poll_cb ();	1688	RETVAL = poll_cb ();
1206	OUTPUT:	1689	OUTPUT:
1207	RETVAL	1690	RETVAL
1208		1691
1209	void	1692	void
1210	poll_wait()	1693	poll_wait ()
1211	PROTOTYPE:
1212	CODE:	1694	CODE:
1213	if (nreqs)
1214	poll_wait ();	1695	poll_wait ();
1215		1696
1216	int	1697	int
1217	nreqs()	1698	nreqs ()
1218	PROTOTYPE:
1219	CODE:	1699	CODE:
1220	RETVAL = nreqs;	1700	RETVAL = eio_nreqs ();
1221	OUTPUT:	1701	OUTPUT:
1222	RETVAL	1702	RETVAL
1223		1703
		1704	int
		1705	nready ()
		1706	CODE:
		1707	RETVAL = eio_nready ();
		1708	OUTPUT:
		1709	RETVAL
		1710
		1711	int
		1712	npending ()
		1713	CODE:
		1714	RETVAL = eio_npending ();
		1715	OUTPUT:
		1716	RETVAL
		1717
		1718	int
		1719	nthreads ()
		1720	CODE:
		1721	RETVAL = eio_nthreads ();
		1722	OUTPUT:
		1723	RETVAL
		1724
		1725	int
		1726	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1727	CODE:
		1728	RETVAL = posix_fadvise (fh, offset, length, advice);
		1729	OUTPUT:
		1730	RETVAL
		1731
		1732	IV
		1733	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1734	CODE:
		1735	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1736	OUTPUT:
		1737	RETVAL
		1738
		1739	void
		1740	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1741	PPCODE:
		1742	sv_unmagic (scalar, MMAP_MAGIC);
		1743	{
		1744	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1745	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1746	if (addr == (void *)-1)
		1747	XSRETURN_NO;
		1748
		1749	sv_force_normal (scalar);
		1750
		1751	/* we store the length in mg_obj, as namlen is I32 :/ */
		1752	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1753	->mg_obj = (SV *)length;
		1754
		1755	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1756
		1757	if (!(prot & PROT_WRITE))
		1758	SvREADONLY_on (scalar);
		1759
		1760	if (SvLEN (scalar))
		1761	Safefree (SvPVX (scalar));
		1762
		1763	SvPVX (scalar) = (char *)addr;
		1764	SvCUR_set (scalar, length);
		1765	SvLEN_set (scalar, 0);
		1766	SvPOK_only (scalar);
		1767
		1768	XSRETURN_YES;
		1769	}
		1770
		1771	void
		1772	munmap (SV *scalar)
		1773	CODE:
		1774	sv_unmagic (scalar, MMAP_MAGIC);
		1775
		1776	int
		1777	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1778	ALIAS:
		1779	mprotect = 1
		1780	CODE:
		1781	{
		1782	STRLEN svlen;
		1783	void *addr = SvPVbyte (scalar, svlen);
		1784	size_t len = SvUV (length);
		1785
		1786	if (offset < 0)
		1787	offset += svlen;
		1788
		1789	if (offset < 0 || offset > svlen)
		1790	croak ("offset outside of scalar");
		1791
		1792	if (!SvOK (length) || len + offset > svlen)
		1793	len = svlen - offset;
		1794
		1795	addr = (void *)(((intptr_t)addr) + offset);
		1796	eio_page_align (&addr, &len);
		1797
		1798	switch (ix)
		1799	{
		1800	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1801	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1802	}
		1803	}
		1804	OUTPUT:
		1805	RETVAL
		1806
		1807	int
		1808	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1809	CODE:
		1810	{
		1811	STRLEN svlen;
		1812	void *addr = SvPVbyte (scalar, svlen);
		1813	size_t len = SvUV (length);
		1814
		1815	if (offset < 0)
		1816	offset += svlen;
		1817
		1818	if (offset < 0 || offset > svlen)
		1819	croak ("offset outside of scalar");
		1820
		1821	if (!SvOK (length) || len + offset > svlen)
		1822	len = svlen - offset;
		1823
		1824	addr = (void *)(((intptr_t)addr) + offset);
		1825	eio_page_align (&addr, &len);
		1826	#if _POSIX_MEMLOCK_RANGE
		1827	RETVAL = munlock (addr, len);
		1828	#else
		1829	RETVAL = EIO_ENOSYS ();
		1830	#endif
		1831	}
		1832	OUTPUT:
		1833	RETVAL
		1834
		1835	int
		1836	munlockall ()
		1837	CODE:
		1838	#if _POSIX_MEMLOCK
		1839	munlockall ();
		1840	#else
		1841	RETVAL = EIO_ENOSYS ();
		1842	#endif
		1843	OUTPUT:
		1844	RETVAL
		1845
		1846	int
		1847	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1848	CODE:
		1849	{
		1850	#if HAVE_LINUX_SPLICE
		1851	loff_t off_in_, off_out_;
		1852	RETVAL = splice (
		1853	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1854	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1855	length, flags
		1856	);
		1857	#else
		1858	RETVAL = EIO_ENOSYS ();
		1859	#endif
		1860	}
		1861	OUTPUT:
		1862	RETVAL
		1863
		1864	int
		1865	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1866	CODE:
		1867	#if HAVE_LINUX_SPLICE
		1868	RETVAL = tee (rfh, wfh, length, flags);
		1869	#else
		1870	RETVAL = EIO_ENOSYS ();
		1871	#endif
		1872	OUTPUT:
		1873	RETVAL
		1874
		1875	void _on_next_submit (SV *cb)
		1876	CODE:
		1877	SvREFCNT_dec (on_next_submit);
		1878	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1879
1224	PROTOTYPES: DISABLE	1880	PROTOTYPES: DISABLE
1225		1881
		1882	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1883
		1884	BOOT:
		1885	{
		1886	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1887	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1888	}
		1889
		1890	void
		1891	DESTROY (SV *self)
		1892	CODE:
		1893	{
		1894	aio_wd wd = SvAIO_WD (self);
		1895	#if HAVE_AT
		1896	{
		1897	SV *callback = &PL_sv_undef;
		1898	dREQ; /* clobbers next_pri :/ */
		1899	next_pri = req->pri; /* restore next_pri */
		1900	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1901	req->type = EIO_WD_CLOSE;
		1902	req->wd = wd;
		1903	REQ_SEND;
		1904	}
		1905	#else
		1906	eio_wd_close_sync (wd);
		1907	#endif
		1908	}
		1909
1226	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1910	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1227		1911
1228	void	1912	void
1229	cancel (aio_req_ornot req)	1913	cancel (aio_req_ornot req)
1230	PROTOTYPE:
1231	CODE:	1914	CODE:
1232	req_cancel (req);	1915	eio_cancel (req);
		1916
		1917	void
		1918	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1919	PPCODE:
		1920	{
		1921	if (GIMME_V != G_VOID)
		1922	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1923
		1924	if (items > 1)
		1925	{
		1926	SV *cb_cv =get_cb (callback);
		1927
		1928	SvREFCNT_dec (req->callback);
		1929	req->callback = SvREFCNT_inc (cb_cv);
		1930	}
		1931	}
1233		1932
1234	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1933	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1235		1934
1236	void	1935	void
1237	add (aio_req grp, ...)	1936	add (aio_req grp, ...)
1238	PPCODE:	1937	PPCODE:
1239	{	1938	{
1240	int i;	1939	int i;
1241		1940
		1941	if (grp->int1 == 2)
		1942	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1943
1242	for (i = 1; i < items; ++i )	1944	for (i = 1; i < items; ++i )
1243	{	1945	{
		1946	aio_req req;
		1947
1244	if (GIMME_V != G_VOID)	1948	if (GIMME_V != G_VOID)
1245	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1949	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1246		1950
1247	aio_req req = SvAIO_REQ (ST (i));	1951	req = SvAIO_REQ (ST (i));
1248		1952
1249	if (req)	1953	if (req)
1250	{	1954	eio_grp_add (grp, req);
1251	req->grp_prev = grp;
1252	req->grp_next = grp->grp_next;
1253	grp->grp_next->grp_prev = req;
1254	grp->grp_next = req;
1255
1256	req->grp = grp;
1257	}
1258	}	1955	}
1259	}	1956	}
1260		1957
1261	void	1958	void
		1959	cancel_subs (aio_req_ornot req)
		1960	CODE:
		1961	req_cancel_subs (req);
		1962
		1963	void
1262	result (aio_req grp, ...)	1964	result (aio_req grp, ...)
		1965	CODE:
		1966	{
		1967	int i;
		1968	AV *av;
		1969
		1970	grp->errorno = errno;
		1971
		1972	av = newAV ();
		1973	av_extend (av, items - 1);
		1974
		1975	for (i = 1; i < items; ++i )
		1976	av_push (av, newSVsv (ST (i)));
		1977
		1978	SvREFCNT_dec (grp->sv1);
		1979	grp->sv1 = (SV *)av;
		1980	}
		1981
		1982	void
		1983	errno (aio_req grp, int errorno = errno)
		1984	CODE:
		1985	grp->errorno = errorno;
		1986
		1987	void
		1988	limit (aio_req grp, int limit)
1263	CODE:	1989	CODE:
1264	{	1990	eio_grp_limit (grp, limit);
1265	int i;
1266	AV *av = newAV ();
1267		1991
1268	if (grp->data)	1992	void
		1993	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1994	CODE:
		1995	{
1269	SvREFCNT_dec (grp->data);	1996	SvREFCNT_dec (grp->sv2);
		1997	grp->sv2 = newSVsv (callback);
		1998	grp->feed = aio_grp_feed;
1270		1999
1271	for (i = 1; i < items; ++i )	2000	if (grp->int2 <= 0)
1272	av_push (av, newSVsv (ST (i)));	2001	grp->int2 = 2;
1273		2002
1274	grp->data = (SV *)av;	2003	eio_grp_limit (grp, grp->int2);
1275	}	2004	}
1276		2005

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