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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.54 by root, Mon Oct 23 00:34:36 2006 UTC vs.
Revision 1.161 by root, Sun Jan 10 20:28:43 2010 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>
		16	#include <sys/statvfs.h>
18	#include <limits.h>	17	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	18	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	19	#include <sched.h>
23		20
24	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	22	# include <sys/mman.h>
30	# elif __hpux
31	# include <sys/socket.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>
34	# else
35	# error sendfile support requested but not available
36	# endif	23	#endif
37	#endif
38		24
39	/* used for struct dirent, AIX doesn't provide it */	25	/* perl namespace pollution */
40	#ifndef NAME_MAX	26	#undef VERSION
41	# define NAME_MAX 4096
42	#endif
43		27
44	#if __ia64	28	#ifdef _WIN32
45	# define STACKSIZE 65536	29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
46	#else	66	#else
47	# define STACKSIZE 8192	67
		68	# include <sys/time.h>
		69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
48	#endif	75	#endif
		76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#ifndef ST_NODEV
		146	# define ST_NODEV 0
		147	#endif
		148	#ifndef ST_NOEXEC
		149	# define ST_NOEXEC 0
		150	#endif
		151	#ifndef ST_SYNCHRONOUS
		152	# define ST_SYNCHRONOUS 0
		153	#endif
		154	#ifndef ST_MANDLOCK
		155	# define ST_MANDLOCK 0
		156	#endif
		157	#ifndef ST_WRITE
		158	# define ST_WRITE 0
		159	#endif
		160	#ifndef ST_APPEND
		161	# define ST_APPEND 0
		162	#endif
		163	#ifndef ST_IMMUTABLE
		164	# define ST_IMMUTABLE 0
		165	#endif
		166	#ifndef ST_NOATIME
		167	# define ST_NOATIME 0
		168	#endif
		169	#ifndef ST_NODIRATIME
		170	# define ST_NODIRATIME 0
		171	#endif
		172	#ifndef ST_RELATIME
		173	# define ST_RELATIME 0
		174	#endif
		175
		176	#ifndef MCL_CURRENT
		177	# define MCL_CURRENT 0
		178	#endif
		179	#ifndef MCL_FUTURE
		180	# define MCL_FUTURE 0
		181	#endif
		182
		183	static int req_invoke (eio_req *req);
		184	#define EIO_FINISH(req) req_invoke (req)
		185	static void req_destroy (eio_req *grp);
		186	#define EIO_DESTROY(req) req_destroy (req)
49		187
50	enum {	188	enum {
51	REQ_QUIT,	189	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
52	REQ_OPEN, REQ_CLOSE,
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_GROUP, REQ_NOP,
61	REQ_SLEEP,
62	};	190	};
63		191
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	192	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		193
67	typedef struct aio_cb
68	{
69	struct aio_cb *volatile next;
70
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	194	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	195	typedef eio_req *aio_req_ornot;
93		196
94	static int started, wanted;	197	static SV *on_next_submit;
95	static volatile int nreqs;	198	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	199	static int max_outstanding;
97	static int respipe [2];
98		200
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	201	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		202
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	203	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_invoke (aio_req req);	204	static void req_cancel (aio_req req);
107	static void req_free (aio_req req);	205
		206	static void want_poll (void)
		207	{
		208	/* write a dummy byte to the pipe so fh becomes ready */
		209	s_epipe_signal (&respipe);
		210	}
		211
		212	static void done_poll (void)
		213	{
		214	/* read any signals sent by the worker threads */
		215	s_epipe_drain (&respipe);
		216	}
108		217
109	/* must be called at most once */	218	/* must be called at most once */
110	static SV *req_sv (aio_req req, const char *klass)	219	static SV *req_sv (aio_req req, HV *stash)
111	{	220	{
112	if (!req->self)	221	if (!req->self)
113	{	222	{
114	req->self = (SV *)newHV ();	223	req->self = (SV *)newHV ();
115	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	224	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
116	}	225	}
117		226
118	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	227	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
119	}	228	}
120		229
121	static aio_req SvAIO_REQ (SV *sv)	230	static aio_req SvAIO_REQ (SV *sv)
122	{	231	{
123	MAGIC *mg;	232	MAGIC *mg;
124		233
125	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	234	if (!SvROK (sv)
		235	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		236	&& SvSTASH (SvRV (sv)) != aio_req_stash
		237	&& !sv_derived_from (sv, "IO::AIO::REQ")))
126	croak ("object of class " AIO_REQ_KLASS " expected");	238	croak ("object of class IO::AIO::REQ expected");
127		239
128	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	240	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
129		241
130	return mg ? (aio_req)mg->mg_ptr : 0;	242	return mg ? (aio_req)mg->mg_ptr : 0;
131	}	243	}
132		244
133	static void aio_grp_feed (aio_req grp)	245	static void aio_grp_feed (aio_req grp)
134	{	246	{
135	while (grp->length < grp->fd2)	247	if (grp->sv2 && SvOK (grp->sv2))
136	{	248	{
137	int old_len = grp->length;	249	dSP;
138		250
139	if (grp->fh2 && SvOK (grp->fh2))	251	ENTER;
		252	SAVETMPS;
		253	PUSHMARK (SP);
		254	XPUSHs (req_sv (grp, aio_grp_stash));
		255	PUTBACK;
		256	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		257	SPAGAIN;
		258	FREETMPS;
		259	LEAVE;
		260	}
		261	}
		262
		263	static void req_submit (eio_req *req)
		264	{
		265	eio_submit (req);
		266
		267	if (expect_false (on_next_submit))
		268	{
		269	dSP;
		270	SV *cb = sv_2mortal (on_next_submit);
		271
		272	on_next_submit = 0;
		273
		274	PUSHMARK (SP);
		275	PUTBACK;
		276	call_sv (cb, G_DISCARD | G_EVAL);
		277	}
		278	}
		279
		280	static int req_invoke (eio_req *req)
		281	{
		282	dSP;
		283
		284	if (req->flags & FLAG_SV2_RO_OFF)
		285	SvREADONLY_off (req->sv2);
		286
		287	if (!EIO_CANCELLED (req) && req->callback)
		288	{
		289	ENTER;
		290	SAVETMPS;
		291	PUSHMARK (SP);
		292	EXTEND (SP, 1);
		293
		294	switch (req->type)
140	{	295	{
141	dSP;	296	case EIO_READDIR:
		297	{
		298	SV *rv = &PL_sv_undef;
142		299
143	ENTER;	300	if (req->result >= 0)
144	SAVETMPS;	301	{
145	PUSHMARK (SP);	302	int i;
146	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	303	char *names = (char *)req->ptr2;
147	PUTBACK;	304	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
148	call_sv (grp->fh2, G_VOID | G_EVAL);	305	AV *av = newAV ();
149	SPAGAIN;	306
150	FREETMPS;	307	av_extend (av, req->result - 1);
151	LEAVE;	308
		309	for (i = 0; i < req->result; ++i)
		310	{
		311	if (req->int1 & EIO_READDIR_DENTS)
		312	{
		313	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		314
		315	if (req->int1 & EIO_READDIR_CUSTOM2)
		316	{
		317	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		318	AV *avent = newAV ();
		319
		320	av_extend (avent, 2);
		321
		322	if (!sv_type [ent->type])
		323	{
		324	sv_type [ent->type] = newSViv (ent->type);
		325	SvREADONLY_on (sv_type [ent->type]);
		326	}
		327
		328	av_store (avent, 0, namesv);
		329	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		330	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		331
		332	av_store (av, i, newRV_noinc ((SV *)avent));
		333	}
		334	else
		335	av_store (av, i, namesv);
		336
		337	++ent;
		338	}
		339	else
		340	{
		341	SV *name = newSVpv (names, 0);
		342	av_store (av, i, name);
		343	names += SvCUR (name) + 1;
		344	}
		345	}
		346
		347	rv = sv_2mortal (newRV_noinc ((SV *)av));
		348	}
		349
		350	PUSHs (rv);
		351
		352	if (req->int1 & EIO_READDIR_CUSTOM1)
		353	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		354	}
		355	break;
		356
		357	case EIO_OPEN:
		358	{
		359	/* convert fd to fh */
		360	SV *fh = &PL_sv_undef;
		361
		362	if (req->result >= 0)
		363	{
		364	GV *gv = (GV *)sv_newmortal ();
		365	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		366	char sym [64];
		367	int symlen;
		368
		369	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		370	gv_init (gv, aio_stash, sym, symlen, 0);
		371
		372	symlen = snprintf (
		373	sym,
		374	sizeof (sym),
		375	"%s&=%d",
		376	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		377	(int)req->result
		378	);
		379
		380	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		381	fh = (SV *)gv;
		382	}
		383
		384	PUSHs (fh);
		385	}
		386	break;
		387
		388	case EIO_STATVFS:
		389	case EIO_FSTATVFS:
		390	{
		391	SV *rv = &PL_sv_undef;
		392
		393	if (req->result >= 0)
		394	{
		395	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		396	HV *hv = newHV ();
		397
		398	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		399
		400	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		401	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		402	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		403	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		404	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		405	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		406	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		407	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		408	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		409	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		410	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		411	}
		412
		413	PUSHs (rv);
		414	}
		415
		416	break;
		417
		418	case EIO_GROUP:
		419	req->int1 = 2; /* mark group as finished */
		420
		421	if (req->sv1)
		422	{
		423	int i;
		424	AV *av = (AV *)req->sv1;
		425
		426	EXTEND (SP, AvFILL (av) + 1);
		427	for (i = 0; i <= AvFILL (av); ++i)
		428	PUSHs (*av_fetch (av, i, 0));
		429	}
		430	break;
		431
		432	case EIO_NOP:
		433	case EIO_BUSY:
		434	break;
		435
		436	case EIO_READLINK:
		437	if (req->result > 0)
		438	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		439	break;
		440
		441	case EIO_STAT:
		442	case EIO_LSTAT:
		443	case EIO_FSTAT:
		444	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		445	PL_laststatval = req->result;
		446	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		447	PUSHs (sv_2mortal (newSViv (req->result)));
		448	break;
		449
		450	case EIO_READ:
		451	{
		452	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		453	*SvEND (req->sv2) = 0;
		454	SvPOK_only (req->sv2);
		455	SvSETMAGIC (req->sv2);
		456	PUSHs (sv_2mortal (newSViv (req->result)));
		457	}
		458	break;
		459
		460	case EIO_DUP2:
		461	if (req->result > 0)
		462	req->result = 0;
		463	/* FALLTHROUGH */
		464
		465	default:
		466	PUSHs (sv_2mortal (newSViv (req->result)));
		467	break;
152	}	468	}
153		469
154	/* stop if no progress has been made */	470	errno = req->errorno;
155	if (old_len == grp->length)	471
156	{	472	PUTBACK;
157	SvREFCNT_dec (grp->fh2);	473	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
158	grp->fh2 = 0;	474	SPAGAIN;
159	break;	475
160	}	476	FREETMPS;
		477	LEAVE;
		478
		479	PUTBACK;
161	}	480	}
162	}
163		481
164	static void aio_grp_dec (aio_req grp)	482	return !!SvTRUE (ERRSV);
165	{
166	--grp->length;
167
168	/* call feeder, if applicable */
169	aio_grp_feed (grp);
170
171	/* finish, if done */
172	if (!grp->length && grp->fd)
173	{
174	req_invoke (grp);
175	req_free (grp);
176	}
177	}	483	}
178		484
179	static void poll_wait ()
180	{
181	if (nreqs && !ress)
182	{
183	fd_set rfd;
184	FD_ZERO(&rfd);
185	FD_SET(respipe [0], &rfd);
186
187	select (respipe [0] + 1, &rfd, 0, 0, 0);
188	}
189	}
190
191	static void req_invoke (aio_req req)
192	{
193	dSP;
194	int errorno = errno;
195
196	if (req->cancelled || !SvOK (req->callback))
197	return;
198
199	errno = req->errorno;
200
201	ENTER;
202	SAVETMPS;
203	PUSHMARK (SP);
204	EXTEND (SP, 1);
205
206	switch (req->type)
207	{
208	case REQ_READDIR:
209	{
210	SV *rv = &PL_sv_undef;
211
212	if (req->result >= 0)
213	{
214	char *buf = req->data2ptr;
215	AV *av = newAV ();
216
217	while (req->result)
218	{
219	SV *sv = newSVpv (buf, 0);
220
221	av_push (av, sv);
222	buf += SvCUR (sv) + 1;
223	req->result--;
224	}
225
226	rv = sv_2mortal (newRV_noinc ((SV *)av));
227	}
228
229	PUSHs (rv);
230	}
231	break;
232
233	case REQ_OPEN:
234	{
235	/* convert fd to fh */
236	SV *fh;
237
238	PUSHs (sv_2mortal (newSViv (req->result)));
239	PUTBACK;
240	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
241	SPAGAIN;
242
243	fh = SvREFCNT_inc (POPs);
244
245	PUSHMARK (SP);
246	XPUSHs (sv_2mortal (fh));
247	}
248	break;
249
250	case REQ_GROUP:
251	req->fd = 2; /* mark group as finished */
252
253	if (req->data)
254	{
255	int i;
256	AV *av = (AV *)req->data;
257
258	EXTEND (SP, AvFILL (av) + 1);
259	for (i = 0; i <= AvFILL (av); ++i)
260	PUSHs (*av_fetch (av, i, 0));
261	}
262	break;
263
264	case REQ_NOP:
265	case REQ_SLEEP:
266	break;
267
268	default:
269	PUSHs (sv_2mortal (newSViv (req->result)));
270	break;
271	}
272
273
274	PUTBACK;
275	call_sv (req->callback, G_VOID | G_EVAL);
276	SPAGAIN;
277
278	FREETMPS;
279	LEAVE;
280
281	errno = errorno;
282
283	if (SvTRUE (ERRSV))
284	{
285	req_free (req);
286	croak (0);
287	}
288	}
289
290	static void req_free (aio_req req)	485	static void req_destroy (aio_req req)
291	{	486	{
292	if (req->grp)
293	{
294	aio_req grp = req->grp;
295
296	/* unlink request */
297	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
298	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
299
300	if (grp->grp_first == req)
301	grp->grp_first = req->grp_next;
302
303	aio_grp_dec (grp);
304	}
305
306	if (req->self)	487	if (req->self)
307	{	488	{
308	sv_unmagic (req->self, PERL_MAGIC_ext);	489	sv_unmagic (req->self, PERL_MAGIC_ext);
309	SvREFCNT_dec (req->self);	490	SvREFCNT_dec (req->self);
310	}	491	}
311		492
312	SvREFCNT_dec (req->data);
313	SvREFCNT_dec (req->fh);	493	SvREFCNT_dec (req->sv1);
314	SvREFCNT_dec (req->fh2);	494	SvREFCNT_dec (req->sv2);
315	SvREFCNT_dec (req->callback);	495	SvREFCNT_dec (req->callback);
316	Safefree (req->statdata);
317
318	if (req->type == REQ_READDIR && req->result >= 0)
319	free (req->data2ptr);
320		496
321	Safefree (req);	497	Safefree (req);
322	}	498	}
323		499
324	static void req_cancel (aio_req req)	500	static void req_cancel_subs (aio_req grp)
325	{	501	{
326	req->cancelled = 1;	502	aio_req sub;
327		503
328	if (req->type == REQ_GROUP)	504	if (grp->type != EIO_GROUP)
		505	return;
		506
		507	SvREFCNT_dec (grp->sv2);
		508	grp->sv2 = 0;
		509
		510	eio_grp_cancel (grp);
		511	}
		512
		513	static void
		514	create_respipe (void)
		515	{
		516	if (s_epipe_renew (&respipe))
		517	croak ("IO::AIO: unable to initialize result pipe");
		518	}
		519
		520	static void poll_wait (void)
		521	{
		522	while (eio_nreqs ())
329	{	523	{
330	aio_req sub;	524	int size;
331		525
332	for (sub = req->grp_first; sub; sub = sub->grp_next)	526	X_LOCK (reslock);
333	req_cancel (sub);	527	size = res_queue.size;
		528	X_UNLOCK (reslock);
		529
		530	if (size)
		531	return;
		532
		533	etp_maybe_start_thread ();
		534
		535	s_epipe_wait (&respipe);
334	}	536	}
335	}	537	}
336		538
337	static int poll_cb ()	539	static int poll_cb (void)
338	{	540	{
339	dSP;
340	int count = 0;
341	int do_croak = 0;
342	aio_req req;
343
344	for (;;)	541	for (;;)
345	{	542	{
346	pthread_mutex_lock (&reslock);	543	int res = eio_poll ();
347	req = ress;
348		544
349	if (req)	545	if (res > 0)
350	{
351	ress = req->next;
352
353	if (!ress)
354	{
355	/* read any signals sent by the worker threads */
356	char buf [32];
357	while (read (respipe [0], buf, 32) == 32)
358	;
359
360	rese = 0;
361	}
362	}
363
364	pthread_mutex_unlock (&reslock);
365
366	if (!req)
367	break;	546	croak (0);
368		547
369	--nreqs;	548	if (!max_outstanding || max_outstanding > eio_nreqs ())
		549	return res;
370		550
371	if (req->type == REQ_QUIT)	551	poll_wait ();
372	started--;
373	else if (req->type == REQ_GROUP && req->length)
374	{
375	req->fd = 1; /* mark request as delayed */
376	continue;
377	}
378	else
379	{
380	if (req->type == REQ_READ)
381	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
382
383	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
384	SvREADONLY_off (req->data);
385
386	if (req->statdata)
387	{
388	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
389	PL_laststatval = req->result;
390	PL_statcache = *(req->statdata);
391	}
392
393	req_invoke (req);
394
395	count++;
396	}
397
398	req_free (req);
399	}	552	}
400
401	return count;
402	}
403
404	static void *aio_proc(void *arg);
405
406	static void start_thread (void)
407	{
408	sigset_t fullsigset, oldsigset;
409	pthread_t tid;
410	pthread_attr_t attr;
411
412	pthread_attr_init (&attr);
413	pthread_attr_setstacksize (&attr, STACKSIZE);
414	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
415
416	sigfillset (&fullsigset);
417	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
418
419	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
420	started++;
421
422	sigprocmask (SIG_SETMASK, &oldsigset, 0);
423	}
424
425	static void req_send (aio_req req)
426	{
427	while (started < wanted && nreqs >= started)
428	start_thread ();
429
430	++nreqs;
431
432	pthread_mutex_lock (&reqlock);
433
434	req->next = 0;
435
436	if (reqe)
437	{
438	reqe->next = req;
439	reqe = req;
440	}
441	else
442	reqe = reqs = req;
443
444	pthread_cond_signal (&reqwait);
445	pthread_mutex_unlock (&reqlock);
446
447	if (nreqs > max_outstanding)
448	for (;;)
449	{
450	poll_cb ();
451
452	if (nreqs <= max_outstanding)
453	break;
454
455	poll_wait ();
456	}
457	}
458
459	static void end_thread (void)
460	{
461	aio_req req;
462	Newz (0, req, 1, aio_cb);
463	req->type = REQ_QUIT;
464
465	req_send (req);
466	}
467
468	static void min_parallel (int nthreads)
469	{
470	if (wanted < nthreads)
471	wanted = nthreads;
472	}
473
474	static void max_parallel (int nthreads)
475	{
476	int cur = started;
477
478	if (wanted > nthreads)
479	wanted = nthreads;
480
481	while (cur > wanted)
482	{
483	end_thread ();
484	cur--;
485	}
486
487	while (started > wanted)
488	{
489	poll_wait ();
490	poll_cb ();
491	}
492	}
493
494	static void create_pipe ()
495	{
496	if (pipe (respipe))
497	croak ("unable to initialize result pipe");
498
499	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
500	croak ("cannot set result pipe to nonblocking mode");
501
502	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
503	croak ("cannot set result pipe to nonblocking mode");
504	}
505
506	/*****************************************************************************/
507	/* work around various missing functions */
508
509	#if !HAVE_PREADWRITE
510	# define pread aio_pread
511	# define pwrite aio_pwrite
512
513	/*
514	* make our pread/pwrite safe against themselves, but not against
515	* normal read/write by using a mutex. slows down execution a lot,
516	* but that's your problem, not mine.
517	*/
518	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
519
520	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
521	{
522	ssize_t res;
523	off_t ooffset;
524
525	pthread_mutex_lock (&preadwritelock);
526	ooffset = lseek (fd, 0, SEEK_CUR);
527	lseek (fd, offset, SEEK_SET);
528	res = read (fd, buf, count);
529	lseek (fd, ooffset, SEEK_SET);
530	pthread_mutex_unlock (&preadwritelock);
531
532	return res;
533	}
534
535	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
536	{
537	ssize_t res;
538	off_t ooffset;
539
540	pthread_mutex_lock (&preadwritelock);
541	ooffset = lseek (fd, 0, SEEK_CUR);
542	lseek (fd, offset, SEEK_SET);
543	res = write (fd, buf, count);
544	lseek (fd, offset, SEEK_SET);
545	pthread_mutex_unlock (&preadwritelock);
546
547	return res;
548	}
549	#endif
550
551	#if !HAVE_FDATASYNC
552	# define fdatasync fsync
553	#endif
554
555	#if !HAVE_READAHEAD
556	# define readahead aio_readahead
557
558	static ssize_t readahead (int fd, off_t offset, size_t count)
559	{
560	char readahead_buf[4096];
561
562	while (count > 0)
563	{
564	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
565
566	pread (fd, readahead_buf, len, offset);
567	offset += len;
568	count -= len;
569	}
570
571	errno = 0;
572	}
573	#endif
574
575	#if !HAVE_READDIR_R
576	# define readdir_r aio_readdir_r
577
578	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
579
580	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
581	{
582	struct dirent *e;
583	int errorno;
584
585	pthread_mutex_lock (&readdirlock);
586
587	e = readdir (dirp);
588	errorno = errno;
589
590	if (e)
591	{
592	*res = ent;
593	strcpy (ent->d_name, e->d_name);
594	}
595	else
596	*res = 0;
597
598	pthread_mutex_unlock (&readdirlock);
599
600	errno = errorno;
601	return e ? 0 : -1;
602	}
603	#endif
604
605	/* sendfile always needs emulation */
606	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
607	{
608	ssize_t res;
609
610	if (!count)
611	return 0;
612
613	#if HAVE_SENDFILE
614	# if __linux
615	res = sendfile (ofd, ifd, &offset, count);
616
617	# elif __freebsd
618	/*
619	* Of course, the freebsd sendfile is a dire hack with no thoughts
620	* wasted on making it similar to other I/O functions.
621	*/
622	{
623	off_t sbytes;
624	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
625
626	if (res < 0 && sbytes)
627	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
628	res = sbytes;
629	}
630
631	# elif __hpux
632	res = sendfile (ofd, ifd, offset, count, 0, 0);
633
634	# elif __solaris
635	{
636	struct sendfilevec vec;
637	size_t sbytes;
638
639	vec.sfv_fd = ifd;
640	vec.sfv_flag = 0;
641	vec.sfv_off = offset;
642	vec.sfv_len = count;
643
644	res = sendfilev (ofd, &vec, 1, &sbytes);
645
646	if (res < 0 && sbytes)
647	res = sbytes;
648	}
649
650	# endif
651	#else
652	res = -1;
653	errno = ENOSYS;
654	#endif
655
656	if (res < 0
657	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
658	#if __solaris
659	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
660	#endif
661	)
662	)
663	{
664	/* emulate sendfile. this is a major pain in the ass */
665	char buf[4096];
666	res = 0;
667
668	while (count)
669	{
670	ssize_t cnt;
671
672	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
673
674	if (cnt <= 0)
675	{
676	if (cnt && !res) res = -1;
677	break;
678	}
679
680	cnt = write (ofd, buf, cnt);
681
682	if (cnt <= 0)
683	{
684	if (cnt && !res) res = -1;
685	break;
686	}
687
688	offset += cnt;
689	res += cnt;
690	count -= cnt;
691	}
692	}
693
694	return res;
695	}
696
697	/* read a full directory */
698	static int scandir_ (const char *path, void **namesp)
699	{
700	DIR *dirp = opendir (path);
701	union
702	{
703	struct dirent d;
704	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
705	} u;
706	struct dirent *entp;
707	char *name, *names;
708	int memlen = 4096;
709	int memofs = 0;
710	int res = 0;
711	int errorno;
712
713	if (!dirp)
714	return -1;
715
716	names = malloc (memlen);
717
718	for (;;)
719	{
720	errno = 0, readdir_r (dirp, &u.d, &entp);
721
722	if (!entp)
723	break;
724
725	name = entp->d_name;
726
727	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
728	{
729	int len = strlen (name) + 1;
730
731	res++;
732
733	while (memofs + len > memlen)
734	{
735	memlen *= 2;
736	names = realloc (names, memlen);
737	if (!names)
738	break;
739	}
740
741	memcpy (names + memofs, name, len);
742	memofs += len;
743	}
744	}
745
746	errorno = errno;
747	closedir (dirp);
748
749	if (errorno)
750	{
751	free (names);
752	errno = errorno;
753	res = -1;
754	}
755
756	*namesp = (void *)names;
757	return res;
758	}
759
760	/*****************************************************************************/
761
762	static void *aio_proc (void *thr_arg)
763	{
764	aio_req req;
765	int type;
766
767	do
768	{
769	pthread_mutex_lock (&reqlock);
770
771	for (;;)
772	{
773	req = reqs;
774
775	if (reqs)
776	{
777	reqs = reqs->next;
778	if (!reqs) reqe = 0;
779	}
780
781	if (req)
782	break;
783
784	pthread_cond_wait (&reqwait, &reqlock);
785	}
786
787	pthread_mutex_unlock (&reqlock);
788
789	errno = 0; /* strictly unnecessary */
790
791	if (!req->cancelled)
792	switch (type = req->type) /* remember type for QUIT check */
793	{
794	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
795	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
796
797	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
798	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
799
800	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
801	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
802	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
803
804	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
805	case REQ_CLOSE: req->result = close (req->fd); break;
806	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
807	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
808	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
809	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
810	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
811
812	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
813	case REQ_FSYNC: req->result = fsync (req->fd); break;
814	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
815
816	case REQ_SLEEP:
817	{
818	struct timeval tv;
819
820	tv.tv_sec = req->fd;
821	tv.tv_usec = req->fd2;
822
823	req->result = select (0, 0, 0, 0, &tv);
824	}
825
826	case REQ_GROUP: /*TODO: should not be handled here */
827	case REQ_NOP: /*TODO: should not be handled here */
828	case REQ_QUIT:
829	break;
830
831	default:
832	req->result = ENOSYS;
833	break;
834	}
835
836	req->errorno = errno;
837
838	pthread_mutex_lock (&reslock);
839
840	req->next = 0;
841
842	if (rese)
843	{
844	rese->next = req;
845	rese = req;
846	}
847	else
848	{
849	rese = ress = req;
850
851	/* write a dummy byte to the pipe so fh becomes ready */
852	write (respipe [1], &respipe, 1);
853	}
854
855	pthread_mutex_unlock (&reslock);
856	}
857	while (type != REQ_QUIT);
858
859	return 0;
860	}
861
862	/*****************************************************************************/
863
864	static void atfork_prepare (void)
865	{
866	pthread_mutex_lock (&reqlock);
867	pthread_mutex_lock (&reslock);
868	#if !HAVE_PREADWRITE
869	pthread_mutex_lock (&preadwritelock);
870	#endif
871	#if !HAVE_READDIR_R
872	pthread_mutex_lock (&readdirlock);
873	#endif
874	}
875
876	static void atfork_parent (void)
877	{
878	#if !HAVE_READDIR_R
879	pthread_mutex_unlock (&readdirlock);
880	#endif
881	#if !HAVE_PREADWRITE
882	pthread_mutex_unlock (&preadwritelock);
883	#endif
884	pthread_mutex_unlock (&reslock);
885	pthread_mutex_unlock (&reqlock);
886	}	553	}
887		554
888	static void atfork_child (void)	555	static void atfork_child (void)
889	{	556	{
890	aio_req prv;
891
892	started = 0;
893
894	while (reqs)
895	{
896	prv = reqs;
897	reqs = prv->next;
898	req_free (prv);
899	}
900
901	reqs = reqe = 0;
902
903	while (ress)
904	{
905	prv = ress;
906	ress = prv->next;
907	req_free (prv);
908	}
909
910	ress = rese = 0;
911
912	close (respipe [0]);
913	close (respipe [1]);
914	create_pipe ();	557	create_respipe ();
		558	}
915		559
916	atfork_parent ();	560	static SV *
		561	get_cb (SV *cb_sv)
		562	{
		563	SvGETMAGIC (cb_sv);
		564	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
917	}	565	}
918		566
919	#define dREQ \	567	#define dREQ \
		568	SV *cb_cv; \
920	aio_req req; \	569	aio_req req; \
		570	int req_pri = next_pri; \
		571	next_pri = EIO_PRI_DEFAULT; \
921	\	572	\
922	if (SvOK (callback) && !SvROK (callback)) \	573	cb_cv = get_cb (callback); \
923	croak ("callback must be undef or of reference type"); \
924	\	574	\
925	Newz (0, req, 1, aio_cb); \	575	Newz (0, req, 1, eio_req); \
926	if (!req) \	576	if (!req) \
927	croak ("out of memory during aio_req allocation"); \	577	croak ("out of memory during eio_req allocation"); \
928	\	578	\
929	req->callback = newSVsv (callback)	579	req->callback = SvREFCNT_inc (cb_cv); \
		580	req->pri = req_pri
930		581
931	#define REQ_SEND \	582	#define REQ_SEND \
		583	PUTBACK; \
932	req_send (req); \	584	req_submit (req); \
		585	SPAGAIN; \
933	\	586	\
934	if (GIMME_V != G_VOID) \	587	if (GIMME_V != G_VOID) \
935	XPUSHs (req_sv (req, AIO_REQ_KLASS));	588	XPUSHs (req_sv (req, aio_req_stash));
936		589
937	MODULE = IO::AIO PACKAGE = IO::AIO	590	MODULE = IO::AIO PACKAGE = IO::AIO
938		591
939	PROTOTYPES: ENABLE	592	PROTOTYPES: ENABLE
940		593
941	BOOT:	594	BOOT:
942	{	595	{
		596	static const struct {
		597	const char *name;
		598	IV iv;
		599	} *civ, const_iv[] = {
		600	# define const_iv(name, value) { # name, (IV) value },
		601	# define const_eio(name) { # name, (IV) EIO_ ## name },
		602	const_iv (EXDEV , EXDEV)
		603	const_iv (ENOSYS , ENOSYS)
		604	const_iv (O_RDONLY, O_RDONLY)
		605	const_iv (O_WRONLY, O_WRONLY)
		606	const_iv (O_CREAT , O_CREAT)
		607	const_iv (O_TRUNC , O_TRUNC)
		608	#ifndef _WIN32
		609	const_iv (S_IFIFO , S_IFIFO)
		610	#endif
		611	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		612	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		613	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		614	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		615	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		616	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		617
		618	const_iv (ST_RDONLY , ST_RDONLY)
		619	const_iv (ST_NOSUID , ST_NOSUID)
		620	const_iv (ST_NODEV , ST_NODEV)
		621	const_iv (ST_NOEXEC , ST_NOEXEC)
		622	const_iv (ST_SYNCHRONOUS , ST_SYNCHRONOUS)
		623	const_iv (ST_MANDLOCK , ST_MANDLOCK)
		624	const_iv (ST_WRITE , ST_WRITE)
		625	const_iv (ST_APPEND , ST_APPEND)
		626	const_iv (ST_IMMUTABLE , ST_IMMUTABLE)
		627	const_iv (ST_NOATIME , ST_NOATIME)
		628	const_iv (ST_NODIRATIME , ST_NODIRATIME)
		629	const_iv (ST_RELATIME , ST_RELATIME)
		630
		631	const_iv (MCL_FUTURE , MCL_FUTURE)
		632	const_iv (MCL_CURRENT , MCL_CURRENT)
		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
943	HV *stash = gv_stashpv ("IO::AIO", 1);	660	aio_stash = gv_stashpv ("IO::AIO" , 1);
944	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	661	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
945	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	662	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
946	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
947		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
948	create_pipe ();	667	create_respipe ();
949	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
950	}
951		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
952	void	676	void
953	min_parallel (nthreads)	677	max_poll_reqs (int nreqs)
954	int nthreads
955	PROTOTYPE: $	678	PROTOTYPE: $
		679	CODE:
		680	eio_set_max_poll_reqs (nreqs);
956		681
957	void	682	void
958	max_parallel (nthreads)	683	max_poll_time (double nseconds)
959	int nthreads
960	PROTOTYPE: $	684	PROTOTYPE: $
961
962	int
963	max_outstanding (nreqs)
964	int nreqs
965	PROTOTYPE: $
966	CODE:	685	CODE:
967	RETVAL = max_outstanding;	686	eio_set_max_poll_time (nseconds);
		687
		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:
968	max_outstanding = nreqs;	710	max_outstanding = maxreqs;
969		711
970	void	712	void
971	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	713	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
972	SV * pathname
973	int flags
974	int mode
975	SV * callback
976	PROTOTYPE: $$$;$	714	PROTOTYPE: $$$;$
977	PPCODE:	715	PPCODE:
978	{	716	{
979	dREQ;	717	dREQ;
980		718
981	req->type = REQ_OPEN;	719	req->type = EIO_OPEN;
982	req->data = newSVsv (pathname);	720	req->sv1 = newSVsv (pathname);
983	req->dataptr = SvPVbyte_nolen (req->data);	721	req->ptr1 = SvPVbyte_nolen (req->sv1);
984	req->fd = flags;	722	req->int1 = flags;
985	req->mode = mode;	723	req->int2 = mode;
986		724
987	REQ_SEND;	725	REQ_SEND;
988	}	726	}
989		727
990	void	728	void
991	aio_close (fh,callback=&PL_sv_undef)	729	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
992	SV * fh
993	SV * callback
994	PROTOTYPE: $;$	730	PROTOTYPE: $;$
995	ALIAS:	731	ALIAS:
996	aio_close = REQ_CLOSE
997	aio_fsync = REQ_FSYNC	732	aio_fsync = EIO_FSYNC
998	aio_fdatasync = REQ_FDATASYNC	733	aio_fdatasync = EIO_FDATASYNC
999	PPCODE:	734	PPCODE:
1000	{	735	{
		736	int fd = s_fileno_croak (fh, 0);
1001	dREQ;	737	dREQ;
1002		738
1003	req->type = ix;	739	req->type = ix;
1004	req->fh = newSVsv (fh);	740	req->sv1 = newSVsv (fh);
1005	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	741	req->int1 = fd;
1006		742
1007	REQ_SEND (req);	743	REQ_SEND (req);
1008	}	744	}
1009		745
1010	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: $$$$;$
		749	PPCODE:
		750	{
		751	int fd = s_fileno_croak (fh, 0);
		752	dREQ;
		753
		754	req->type = EIO_SYNC_FILE_RANGE;
		755	req->sv1 = newSVsv (fh);
		756	req->int1 = fd;
		757	req->offs = offset;
		758	req->size = nbytes;
		759	req->int2 = flags;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
		765	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		766	PROTOTYPE: $;$
		767	PPCODE:
		768	{
		769	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		770	int fd = s_fileno_croak (fh, 0);
		771	dREQ;
		772
		773	if (close_pipe < 0)
		774	{
		775	int pipefd [2];
		776
		777	if (pipe (pipefd) < 0
		778	|| close (pipefd [1]) < 0
		779	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		780	abort (); /*D*/
		781
		782	close_pipe = pipefd [0];
		783	}
		784
		785	req->type = EIO_DUP2;
		786	req->int1 = close_pipe;
		787	req->sv2 = newSVsv (fh);
		788	req->int2 = fd;
		789
		790	REQ_SEND (req);
		791	}
		792
		793	void
1011	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	794	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1012	SV * fh
1013	UV offset
1014	UV length
1015	SV * data
1016	UV dataoffset
1017	SV * callback
1018	ALIAS:	795	ALIAS:
1019	aio_read = REQ_READ	796	aio_read = EIO_READ
1020	aio_write = REQ_WRITE	797	aio_write = EIO_WRITE
1021	PROTOTYPE: $$$$$;$	798	PROTOTYPE: $$$$$;$
1022	PPCODE:	799	PPCODE:
1023	{	800	{
1024	aio_req req;
1025	STRLEN svlen;	801	STRLEN svlen;
		802	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1026	char *svptr = SvPVbyte (data, svlen);	803	char *svptr = SvPVbyte (data, svlen);
1027		804	UV len = SvUV (length);
1028	SvUPGRADE (data, SVt_PV);
1029	SvPOK_on (data);
1030		805
1031	if (dataoffset < 0)	806	if (dataoffset < 0)
1032	dataoffset += svlen;	807	dataoffset += svlen;
1033		808
1034	if (dataoffset < 0 || dataoffset > svlen)	809	if (dataoffset < 0 || dataoffset > svlen)
1035	croak ("data offset outside of string");	810	croak ("dataoffset outside of data scalar");
1036		811
1037	if (ix == REQ_WRITE)	812	if (ix == EIO_WRITE)
1038	{	813	{
1039	/* write: check length and adjust. */	814	/* write: check length and adjust. */
1040	if (length < 0 || length + dataoffset > svlen)	815	if (!SvOK (length) || len + dataoffset > svlen)
1041	length = svlen - dataoffset;	816	len = svlen - dataoffset;
1042	}	817	}
1043	else	818	else
1044	{	819	{
1045	/* read: grow scalar as necessary */	820	/* read: check type and grow scalar as necessary */
		821	SvUPGRADE (data, SVt_PV);
1046	svptr = SvGROW (data, length + dataoffset);	822	svptr = SvGROW (data, len + dataoffset + 1);
1047	}	823	}
1048
1049	if (length < 0)
1050	croak ("length must not be negative");
1051		824
1052	{	825	{
1053	dREQ;	826	dREQ;
1054		827
1055	req->type = ix;	828	req->type = ix;
1056	req->fh = newSVsv (fh);	829	req->sv1 = newSVsv (fh);
1057	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	830	req->int1 = fd;
1058	: IoOFP (sv_2io (fh)));	831	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1059	req->offset = offset;	832	req->size = len;
1060	req->length = length;
1061	req->data = SvREFCNT_inc (data);	833	req->sv2 = SvREFCNT_inc (data);
1062	req->dataptr = (char *)svptr + dataoffset;	834	req->ptr2 = (char *)svptr + dataoffset;
		835	req->stroffset = dataoffset;
1063		836
1064	if (!SvREADONLY (data))	837	if (!SvREADONLY (data))
1065	{	838	{
1066	SvREADONLY_on (data);	839	SvREADONLY_on (data);
1067	req->data2ptr = (void *)data;	840	req->flags |= FLAG_SV2_RO_OFF;
1068	}	841	}
1069		842
1070	REQ_SEND;	843	REQ_SEND;
1071	}	844	}
1072	}	845	}
1073		846
1074	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
1075	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)
1076	SV * out_fh
1077	SV * in_fh
1078	UV in_offset
1079	UV length
1080	SV * callback
1081	PROTOTYPE: $$$$;$	864	PROTOTYPE: $$$$;$
1082	PPCODE:	865	PPCODE:
1083	{	866	{
		867	int ifd = s_fileno_croak (in_fh , 0);
		868	int ofd = s_fileno_croak (out_fh, 1);
1084	dREQ;	869	dREQ;
1085		870
1086	req->type = REQ_SENDFILE;	871	req->type = EIO_SENDFILE;
1087	req->fh = newSVsv (out_fh);	872	req->sv1 = newSVsv (out_fh);
1088	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	873	req->int1 = ofd;
1089	req->fh2 = newSVsv (in_fh);	874	req->sv2 = newSVsv (in_fh);
1090	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	875	req->int2 = ifd;
1091	req->offset = in_offset;	876	req->offs = in_offset;
1092	req->length = length;	877	req->size = length;
1093		878
1094	REQ_SEND;	879	REQ_SEND;
1095	}	880	}
1096		881
1097	void	882	void
1098	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	883	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1099	SV * fh
1100	UV offset
1101	IV length
1102	SV * callback
1103	PROTOTYPE: $$$;$	884	PROTOTYPE: $$$;$
1104	PPCODE:	885	PPCODE:
1105	{	886	{
		887	int fd = s_fileno_croak (fh, 0);
1106	dREQ;	888	dREQ;
1107		889
1108	req->type = REQ_READAHEAD;	890	req->type = EIO_READAHEAD;
1109	req->fh = newSVsv (fh);	891	req->sv1 = newSVsv (fh);
1110	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	892	req->int1 = fd;
1111	req->offset = offset;	893	req->offs = offset;
1112	req->length = length;	894	req->size = length;
1113		895
1114	REQ_SEND;	896	REQ_SEND;
1115	}	897	}
1116		898
1117	void	899	void
1118	aio_stat (fh_or_path,callback=&PL_sv_undef)	900	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1119	SV * fh_or_path
1120	SV * callback
1121	ALIAS:	901	ALIAS:
1122	aio_stat = REQ_STAT	902	aio_stat = EIO_STAT
1123	aio_lstat = REQ_LSTAT	903	aio_lstat = EIO_LSTAT
		904	aio_statvfs = EIO_STATVFS
1124	PPCODE:	905	PPCODE:
1125	{	906	{
1126	dREQ;	907	dREQ;
1127		908
1128	New (0, req->statdata, 1, Stat_t);	909	req->sv1 = newSVsv (fh_or_path);
1129	if (!req->statdata)
1130	{
1131	req_free (req);
1132	croak ("out of memory during aio_req->statdata allocation");
1133	}
1134		910
1135	if (SvPOK (fh_or_path))	911	if (SvPOK (req->sv1))
1136	{	912	{
1137	req->type = ix;	913	req->type = ix;
1138	req->data = newSVsv (fh_or_path);
1139	req->dataptr = SvPVbyte_nolen (req->data);	914	req->ptr1 = SvPVbyte_nolen (req->sv1);
1140	}	915	}
1141	else	916	else
1142	{	917	{
1143	req->type = REQ_FSTAT;	918	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1144	req->fh = newSVsv (fh_or_path);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	919	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1146	}	920	}
1147		921
1148	REQ_SEND;	922	REQ_SEND;
1149	}	923	}
1150		924
1151	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
1152	aio_unlink (pathname,callback=&PL_sv_undef)	1040	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1153	SV * pathname
1154	SV * callback
1155	ALIAS:	1041	ALIAS:
1156	aio_unlink = REQ_UNLINK	1042	aio_unlink = EIO_UNLINK
1157	aio_rmdir = REQ_RMDIR	1043	aio_rmdir = EIO_RMDIR
1158	aio_readdir = REQ_READDIR	1044	aio_readdir = EIO_READDIR
1159	PPCODE:	1045	PPCODE:
1160	{	1046	{
1161	dREQ;	1047	dREQ;
1162		1048
1163	req->type = ix;	1049	req->type = ix;
1164	req->data = newSVsv (pathname);	1050	req->sv1 = newSVsv (pathname);
1165	req->dataptr = SvPVbyte_nolen (req->data);	1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
1166		1052
1167	REQ_SEND;	1053	REQ_SEND;
1168	}	1054	}
1169		1055
1170	void	1056	void
1171	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1057	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1172	SV * oldpath
1173	SV * newpath
1174	SV * callback
1175	ALIAS:	1058	ALIAS:
1176	aio_link = REQ_LINK	1059	aio_link = EIO_LINK
1177	aio_symlink = REQ_SYMLINK	1060	aio_symlink = EIO_SYMLINK
1178	aio_rename = REQ_RENAME	1061	aio_rename = EIO_RENAME
1179	PPCODE:	1062	PPCODE:
1180	{	1063	{
1181	dREQ;	1064	dREQ;
1182		1065
1183	req->type = ix;	1066	req->type = ix;
1184	req->fh = newSVsv (oldpath);	1067	req->sv1 = newSVsv (oldpath);
1185	req->data2ptr = SvPVbyte_nolen (req->fh);	1068	req->ptr1 = SvPVbyte_nolen (req->sv1);
1186	req->data = newSVsv (newpath);	1069	req->sv2 = newSVsv (newpath);
1187	req->dataptr = SvPVbyte_nolen (req->data);	1070	req->ptr2 = SvPVbyte_nolen (req->sv2);
1188		1071
1189	REQ_SEND;	1072	REQ_SEND;
1190	}	1073	}
1191		1074
1192	void	1075	void
1193	aio_sleep (delay,callback=&PL_sv_undef)	1076	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1194	double delay
1195	SV * callback
1196	PPCODE:	1077	PPCODE:
1197	{	1078	{
1198	dREQ;	1079	dREQ;
1199		1080
1200	req->type = REQ_SLEEP;	1081	req->type = EIO_MKNOD;
1201	req->fd = delay < 0. ? 0 : delay;	1082	req->sv1 = newSVsv (pathname);
1202	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1083	req->ptr1 = SvPVbyte_nolen (req->sv1);
1203		1084	req->int2 = (mode_t)mode;
		1085	req->offs = dev;
		1086
1204	REQ_SEND;	1087	REQ_SEND;
1205	}	1088	}
1206		1089
1207	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
1208	aio_group (callback=&PL_sv_undef)	1137	aio_group (SV *callback=&PL_sv_undef)
1209	SV * callback
1210	PROTOTYPE: ;$	1138	PROTOTYPE: ;$
1211	PPCODE:	1139	PPCODE:
1212	{	1140	{
1213	dREQ;	1141	dREQ;
		1142
1214	req->type = REQ_GROUP;	1143	req->type = EIO_GROUP;
		1144
1215	req_send (req);	1145	req_submit (req);
1216	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1146	XPUSHs (req_sv (req, aio_grp_stash));
1217	}	1147	}
1218		1148
1219	void	1149	void
1220	aio_nop (callback=&PL_sv_undef)	1150	aio_nop (SV *callback=&PL_sv_undef)
1221	SV * callback	1151	ALIAS:
		1152	aio_nop = EIO_NOP
		1153	aio_sync = EIO_SYNC
1222	PPCODE:	1154	PPCODE:
1223	{	1155	{
1224	dREQ;	1156	dREQ;
1225		1157
1226	req->type = REQ_NOP;	1158	req->type = ix;
1227		1159
1228	REQ_SEND;	1160	REQ_SEND;
1229	}	1161	}
		1162
		1163	int
		1164	aioreq_pri (int pri = 0)
		1165	PROTOTYPE: ;$
		1166	CODE:
		1167	RETVAL = next_pri;
		1168	if (items > 0)
		1169	{
		1170	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1171	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1172	next_pri = pri;
		1173	}
		1174	OUTPUT:
		1175	RETVAL
		1176
		1177	void
		1178	aioreq_nice (int nice = 0)
		1179	CODE:
		1180	nice = next_pri - nice;
		1181	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1182	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1183	next_pri = nice;
1230		1184
1231	void	1185	void
1232	flush ()	1186	flush ()
1233	PROTOTYPE:	1187	PROTOTYPE:
1234	CODE:	1188	CODE:
1235	while (nreqs)	1189	while (eio_nreqs ())
1236	{	1190	{
1237	poll_wait ();	1191	poll_wait ();
1238	poll_cb ();	1192	poll_cb ();
1239	}	1193	}
1240		1194
1241	void	1195	int
1242	poll()	1196	poll()
1243	PROTOTYPE:	1197	PROTOTYPE:
1244	CODE:	1198	CODE:
1245	if (nreqs)
1246	{
1247	poll_wait ();	1199	poll_wait ();
1248	poll_cb ();	1200	RETVAL = poll_cb ();
1249	}	1201	OUTPUT:
		1202	RETVAL
1250		1203
1251	int	1204	int
1252	poll_fileno()	1205	poll_fileno()
1253	PROTOTYPE:	1206	PROTOTYPE:
1254	CODE:	1207	CODE:
1255	RETVAL = respipe [0];	1208	RETVAL = s_epipe_fd (&respipe);
1256	OUTPUT:	1209	OUTPUT:
1257	RETVAL	1210	RETVAL
1258		1211
1259	int	1212	int
1260	poll_cb(...)	1213	poll_cb(...)
…		…
1266		1219
1267	void	1220	void
1268	poll_wait()	1221	poll_wait()
1269	PROTOTYPE:	1222	PROTOTYPE:
1270	CODE:	1223	CODE:
1271	if (nreqs)
1272	poll_wait ();	1224	poll_wait ();
1273		1225
1274	int	1226	int
1275	nreqs()	1227	nreqs()
1276	PROTOTYPE:	1228	PROTOTYPE:
1277	CODE:	1229	CODE:
1278	RETVAL = nreqs;	1230	RETVAL = eio_nreqs ();
1279	OUTPUT:	1231	OUTPUT:
1280	RETVAL	1232	RETVAL
1281		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	int
		1279	mlockall (int flags)
		1280	PROTOTYPE: $
		1281	CODE:
		1282	#if _POSIX_MEMLOCK
		1283	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1284	extern int mallopt (int, int);
		1285	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1286	#endif
		1287	mlockall (flags);
		1288	#else
		1289	RETVAL ＝-1;
		1290	errno = ENOSYS;
		1291	#endif
		1292	OUTPUT:
		1293	RETVAL
		1294
		1295	int
		1296	munlockall ()
		1297	PROTOTYPE:
		1298	CODE:
		1299	#if _POSIX_MEMLOCK
		1300	munlockall ();
		1301	#else
		1302	RETVAL ＝-1;
		1303	errno = ENOSYS;
		1304	#endif
		1305	OUTPUT:
		1306	RETVAL
		1307
		1308	void _on_next_submit (SV *cb)
		1309	CODE:
		1310	SvREFCNT_dec (on_next_submit);
		1311	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1312
1282	PROTOTYPES: DISABLE	1313	PROTOTYPES: DISABLE
1283		1314
1284	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1315	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1285		1316
1286	void	1317	void
1287	cancel (aio_req_ornot req)	1318	cancel (aio_req_ornot req)
1288	PROTOTYPE:
1289	CODE:	1319	CODE:
1290	req_cancel (req);	1320	eio_cancel (req);
		1321
		1322	void
		1323	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	if (GIMME_V != G_VOID)
		1327	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1328
		1329	if (items > 1)
		1330	{
		1331	SV *cb_cv =get_cb (callback);
		1332
		1333	SvREFCNT_dec (req->callback);
		1334	req->callback = SvREFCNT_inc (cb_cv);
		1335	}
		1336	}
1291		1337
1292	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1338	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1293		1339
1294	void	1340	void
1295	add (aio_req grp, ...)	1341	add (aio_req grp, ...)
1296	PPCODE:	1342	PPCODE:
1297	{	1343	{
1298	int i;	1344	int i;
1299	aio_req req;
1300		1345
1301	if (grp->fd == 2)	1346	if (grp->int1 == 2)
1302	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1347	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1303		1348
1304	for (i = 1; i < items; ++i )	1349	for (i = 1; i < items; ++i )
1305	{	1350	{
		1351	aio_req req;
		1352
1306	if (GIMME_V != G_VOID)	1353	if (GIMME_V != G_VOID)
1307	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1354	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1308		1355
1309	req = SvAIO_REQ (ST (i));	1356	req = SvAIO_REQ (ST (i));
1310		1357
1311	if (req)	1358	if (req)
1312	{	1359	eio_grp_add (grp, req);
1313	++grp->length;
1314	req->grp = grp;
1315
1316	req->grp_prev = 0;
1317	req->grp_next = grp->grp_first;
1318
1319	if (grp->grp_first)
1320	grp->grp_first->grp_prev = req;
1321
1322	grp->grp_first = req;
1323	}	1360	}
1324	}
1325	}	1361	}
		1362
		1363	void
		1364	cancel_subs (aio_req_ornot req)
		1365	CODE:
		1366	req_cancel_subs (req);
1326		1367
1327	void	1368	void
1328	result (aio_req grp, ...)	1369	result (aio_req grp, ...)
1329	CODE:	1370	CODE:
1330	{	1371	{
1331	int i;	1372	int i;
		1373	AV *av;
		1374
		1375	grp->errorno = errno;
		1376
1332	AV *av = newAV ();	1377	av = newAV ();
		1378	av_extend (av, items - 1);
1333		1379
1334	for (i = 1; i < items; ++i )	1380	for (i = 1; i < items; ++i )
1335	av_push (av, newSVsv (ST (i)));	1381	av_push (av, newSVsv (ST (i)));
1336		1382
1337	SvREFCNT_dec (grp->data);	1383	SvREFCNT_dec (grp->sv1);
1338	grp->data = (SV *)av;	1384	grp->sv1 = (SV *)av;
1339	}	1385	}
1340		1386
1341	void	1387	void
1342	lock (aio_req grp)	1388	errno (aio_req grp, int errorno = errno)
1343	CODE:	1389	CODE:
1344	++grp->length;	1390	grp->errorno = errorno;
1345		1391
1346	void	1392	void
1347	unlock (aio_req grp)
1348	CODE:
1349	aio_grp_dec (grp);
1350
1351	void
1352	feeder_limit (aio_req grp, int limit)	1393	limit (aio_req grp, int limit)
1353	CODE:	1394	CODE:
1354	grp->fd2 = limit;	1395	eio_grp_limit (grp, limit);
1355	aio_grp_feed (grp);
1356		1396
1357	void	1397	void
1358	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)	1398	feed (aio_req grp, SV *callback=&PL_sv_undef)
1359	CODE:	1399	CODE:
1360	{	1400	{
1361	SvREFCNT_dec (grp->fh2);	1401	SvREFCNT_dec (grp->sv2);
1362	grp->fh2 = newSVsv (callback);	1402	grp->sv2 = newSVsv (callback);
		1403	grp->feed = aio_grp_feed;
1363		1404
1364	if (grp->fd2 <= 0)	1405	if (grp->int2 <= 0)
1365	grp->fd2 = 2;	1406	grp->int2 = 2;
1366		1407
1367	aio_grp_feed (grp);	1408	eio_grp_limit (grp, grp->int2);
1368	}	1409	}
1369		1410

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