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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.62 by root, Mon Oct 23 22:45:18 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	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	Stat_t *statdata;
75	off_t offset;
76	size_t length;
77	ssize_t result;
78
79	STRLEN dataoffset;
80	int type;
81	int fd, fd2;
82	int errorno;
83	mode_t mode; /* open */
84
85	unsigned char flags;
86	unsigned char pri;
87
88	SV *self; /* the perl counterpart of this request, if any */
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;
91
92	enum {
93	FLAG_CANCELLED = 0x01,
94	};
95
96	typedef aio_cb *aio_req;	194	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	195	typedef eio_req *aio_req_ornot;
98		196
99	enum {	197	static SV *on_next_submit;
100	PRI_MIN = -4,	198	static int next_pri = EIO_PRI_DEFAULT;
101	PRI_MAX = 4,
102
103	DEFAULT_PRI = 0,
104	PRI_BIAS = -PRI_MIN,
105	};
106
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108
109	static int started, wanted;
110	static volatile int nreqs;
111	static int max_outstanding = 1<<30;	199	static int max_outstanding;
112	static int respipe [2];
113		200
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	201	static s_epipe respipe;
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117		202
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	203	static void req_destroy (aio_req req);
119	static volatile aio_req ress, rese; /* queue start, queue end */
120
121	static void req_invoke (aio_req req);	204	static void req_cancel (aio_req req);
122	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	}
123		217
124	/* must be called at most once */	218	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	219	static SV *req_sv (aio_req req, HV *stash)
126	{	220	{
127	if (!req->self)	221	if (!req->self)
128	{	222	{
129	req->self = (SV *)newHV ();	223	req->self = (SV *)newHV ();
130	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	224	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
131	}	225	}
132		226
133	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	227	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
134	}	228	}
135		229
136	static aio_req SvAIO_REQ (SV *sv)	230	static aio_req SvAIO_REQ (SV *sv)
137	{	231	{
138	MAGIC *mg;	232	MAGIC *mg;
139		233
140	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")))
141	croak ("object of class " AIO_REQ_KLASS " expected");	238	croak ("object of class IO::AIO::REQ expected");
142		239
143	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	240	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
144		241
145	return mg ? (aio_req)mg->mg_ptr : 0;	242	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	243	}
147		244
148	static void aio_grp_feed (aio_req grp)	245	static void aio_grp_feed (aio_req grp)
149	{	246	{
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	247	if (grp->sv2 && SvOK (grp->sv2))
151	{	248	{
152	int old_len = grp->length;	249	dSP;
153		250
154	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)
155	{	295	{
156	dSP;	296	case EIO_READDIR:
		297	{
		298	SV *rv = &PL_sv_undef;
157		299
158	ENTER;	300	if (req->result >= 0)
159	SAVETMPS;	301	{
160	PUSHMARK (SP);	302	int i;
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	303	char *names = (char *)req->ptr2;
162	PUTBACK;	304	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
163	call_sv (grp->fh2, G_VOID | G_EVAL);	305	AV *av = newAV ();
164	SPAGAIN;	306
165	FREETMPS;	307	av_extend (av, req->result - 1);
166	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;
167	}	468	}
168		469
169	/* stop if no progress has been made */	470	errno = req->errorno;
170	if (old_len == grp->length)	471
171	{	472	PUTBACK;
172	SvREFCNT_dec (grp->fh2);	473	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
173	grp->fh2 = 0;	474	SPAGAIN;
174	break;	475
175	}	476	FREETMPS;
		477	LEAVE;
		478
		479	PUTBACK;
176	}	480	}
177	}
178		481
179	static void aio_grp_dec (aio_req grp)	482	return !!SvTRUE (ERRSV);
180	{
181	--grp->length;
182
183	/* call feeder, if applicable */
184	aio_grp_feed (grp);
185
186	/* finish, if done */
187	if (!grp->length && grp->fd)
188	{
189	req_invoke (grp);
190	req_free (grp);
191	}
192	}	483	}
193		484
194	static void poll_wait ()
195	{
196	fd_set rfd;
197
198	while (nreqs)
199	{
200	aio_req req;
201	pthread_mutex_lock (&reslock);
202	req = ress;
203	pthread_mutex_unlock (&reslock);
204
205	if (req)
206	return;
207
208	FD_ZERO(&rfd);
209	FD_SET(respipe [0], &rfd);
210
211	select (respipe [0] + 1, &rfd, 0, 0, 0);
212	}
213	}
214
215	static void req_invoke (aio_req req)
216	{
217	dSP;
218	int errorno = errno;
219
220	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
221	return;
222
223	errno = req->errorno;
224
225	ENTER;
226	SAVETMPS;
227	PUSHMARK (SP);
228	EXTEND (SP, 1);
229
230	switch (req->type)
231	{
232	case REQ_READDIR:
233	{
234	SV *rv = &PL_sv_undef;
235
236	if (req->result >= 0)
237	{
238	char *buf = req->data2ptr;
239	AV *av = newAV ();
240
241	while (req->result)
242	{
243	SV *sv = newSVpv (buf, 0);
244
245	av_push (av, sv);
246	buf += SvCUR (sv) + 1;
247	req->result--;
248	}
249
250	rv = sv_2mortal (newRV_noinc ((SV *)av));
251	}
252
253	PUSHs (rv);
254	}
255	break;
256
257	case REQ_OPEN:
258	{
259	/* convert fd to fh */
260	SV *fh;
261
262	PUSHs (sv_2mortal (newSViv (req->result)));
263	PUTBACK;
264	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
265	SPAGAIN;
266
267	fh = SvREFCNT_inc (POPs);
268
269	PUSHMARK (SP);
270	XPUSHs (sv_2mortal (fh));
271	}
272	break;
273
274	case REQ_GROUP:
275	req->fd = 2; /* mark group as finished */
276
277	if (req->data)
278	{
279	int i;
280	AV *av = (AV *)req->data;
281
282	EXTEND (SP, AvFILL (av) + 1);
283	for (i = 0; i <= AvFILL (av); ++i)
284	PUSHs (*av_fetch (av, i, 0));
285	}
286	break;
287
288	case REQ_NOP:
289	case REQ_SLEEP:
290	break;
291
292	default:
293	PUSHs (sv_2mortal (newSViv (req->result)));
294	break;
295	}
296
297
298	PUTBACK;
299	call_sv (req->callback, G_VOID | G_EVAL);
300	SPAGAIN;
301
302	FREETMPS;
303	LEAVE;
304
305	errno = errorno;
306
307	if (SvTRUE (ERRSV))
308	{
309	req_free (req);
310	croak (0);
311	}
312	}
313
314	static void req_free (aio_req req)	485	static void req_destroy (aio_req req)
315	{	486	{
316	if (req->grp)
317	{
318	aio_req grp = req->grp;
319
320	/* unlink request */
321	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
322	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
323
324	if (grp->grp_first == req)
325	grp->grp_first = req->grp_next;
326
327	aio_grp_dec (grp);
328	}
329
330	if (req->self)	487	if (req->self)
331	{	488	{
332	sv_unmagic (req->self, PERL_MAGIC_ext);	489	sv_unmagic (req->self, PERL_MAGIC_ext);
333	SvREFCNT_dec (req->self);	490	SvREFCNT_dec (req->self);
334	}	491	}
335		492
336	SvREFCNT_dec (req->data);
337	SvREFCNT_dec (req->fh);	493	SvREFCNT_dec (req->sv1);
338	SvREFCNT_dec (req->fh2);	494	SvREFCNT_dec (req->sv2);
339	SvREFCNT_dec (req->callback);	495	SvREFCNT_dec (req->callback);
340	Safefree (req->statdata);
341
342	if (req->type == REQ_READDIR && req->result >= 0)
343	free (req->data2ptr);
344		496
345	Safefree (req);	497	Safefree (req);
346	}	498	}
347		499
348	static void req_cancel (aio_req req)	500	static void req_cancel_subs (aio_req grp)
349	{	501	{
350	req->flags |= FLAG_CANCELLED;	502	aio_req sub;
351		503
352	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 ())
353	{	523	{
354	aio_req sub;	524	int size;
355		525
356	for (sub = req->grp_first; sub; sub = sub->grp_next)	526	X_LOCK (reslock);
357	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);
358	}	536	}
359	}	537	}
360		538
361	static int poll_cb ()	539	static int poll_cb (void)
362	{	540	{
363	dSP;
364	int count = 0;
365	int do_croak = 0;
366	aio_req req;
367
368	for (;;)	541	for (;;)
369	{	542	{
370	pthread_mutex_lock (&reslock);	543	int res = eio_poll ();
371	req = ress;
372		544
373	if (req)	545	if (res > 0)
374	{
375	ress = req->next;
376
377	if (!ress)
378	{
379	/* read any signals sent by the worker threads */
380	char buf [32];
381	while (read (respipe [0], buf, 32) == 32)
382	;
383
384	rese = 0;
385	}
386	}
387
388	pthread_mutex_unlock (&reslock);
389
390	if (!req)
391	break;	546	croak (0);
392		547
393	--nreqs;	548	if (!max_outstanding || max_outstanding > eio_nreqs ())
		549	return res;
394		550
395	if (req->type == REQ_QUIT)	551	poll_wait ();
396	started--;
397	else if (req->type == REQ_GROUP && req->length)
398	{
399	req->fd = 1; /* mark request as delayed */
400	continue;
401	}
402	else
403	{
404	if (req->type == REQ_READ)
405	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
406
407	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
408	SvREADONLY_off (req->data);
409
410	if (req->statdata)
411	{
412	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
413	PL_laststatval = req->result;
414	PL_statcache = *(req->statdata);
415	}
416
417	req_invoke (req);
418
419	count++;
420	}
421
422	req_free (req);
423	}	552	}
424
425	return count;
426	}
427
428	static void *aio_proc(void *arg);
429
430	static void start_thread (void)
431	{
432	sigset_t fullsigset, oldsigset;
433	pthread_t tid;
434	pthread_attr_t attr;
435
436	pthread_attr_init (&attr);
437	pthread_attr_setstacksize (&attr, STACKSIZE);
438	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
439
440	sigfillset (&fullsigset);
441	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
442
443	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
444	started++;
445
446	sigprocmask (SIG_SETMASK, &oldsigset, 0);
447	}
448
449	static void req_send (aio_req req)
450	{
451	while (started < wanted && nreqs >= started)
452	start_thread ();
453
454	++nreqs;
455
456	pthread_mutex_lock (&reqlock);
457
458	req->next = 0;
459
460	if (reqe)
461	{
462	reqe->next = req;
463	reqe = req;
464	}
465	else
466	reqe = reqs = req;
467
468	pthread_cond_signal (&reqwait);
469	pthread_mutex_unlock (&reqlock);
470
471	if (nreqs > max_outstanding)
472	for (;;)
473	{
474	poll_cb ();
475
476	if (nreqs <= max_outstanding)
477	break;
478
479	poll_wait ();
480	}
481	}
482
483	static void end_thread (void)
484	{
485	aio_req req;
486	Newz (0, req, 1, aio_cb);
487	req->type = REQ_QUIT;
488
489	req_send (req);
490	}
491
492	static void min_parallel (int nthreads)
493	{
494	if (wanted < nthreads)
495	wanted = nthreads;
496	}
497
498	static void max_parallel (int nthreads)
499	{
500	int cur = started;
501
502	if (wanted > nthreads)
503	wanted = nthreads;
504
505	while (cur > wanted)
506	{
507	end_thread ();
508	cur--;
509	}
510
511	while (started > wanted)
512	{
513	poll_wait ();
514	poll_cb ();
515	}
516	}
517
518	static void create_pipe ()
519	{
520	if (pipe (respipe))
521	croak ("unable to initialize result pipe");
522
523	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
524	croak ("cannot set result pipe to nonblocking mode");
525
526	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
527	croak ("cannot set result pipe to nonblocking mode");
528	}
529
530	/*****************************************************************************/
531	/* work around various missing functions */
532
533	#if !HAVE_PREADWRITE
534	# define pread aio_pread
535	# define pwrite aio_pwrite
536
537	/*
538	* make our pread/pwrite safe against themselves, but not against
539	* normal read/write by using a mutex. slows down execution a lot,
540	* but that's your problem, not mine.
541	*/
542	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
543
544	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
545	{
546	ssize_t res;
547	off_t ooffset;
548
549	pthread_mutex_lock (&preadwritelock);
550	ooffset = lseek (fd, 0, SEEK_CUR);
551	lseek (fd, offset, SEEK_SET);
552	res = read (fd, buf, count);
553	lseek (fd, ooffset, SEEK_SET);
554	pthread_mutex_unlock (&preadwritelock);
555
556	return res;
557	}
558
559	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
560	{
561	ssize_t res;
562	off_t ooffset;
563
564	pthread_mutex_lock (&preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);
567	res = write (fd, buf, count);
568	lseek (fd, offset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);
570
571	return res;
572	}
573	#endif
574
575	#if !HAVE_FDATASYNC
576	# define fdatasync fsync
577	#endif
578
579	#if !HAVE_READAHEAD
580	# define readahead aio_readahead
581
582	static ssize_t readahead (int fd, off_t offset, size_t count)
583	{
584	char readahead_buf[4096];
585
586	while (count > 0)
587	{
588	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
589
590	pread (fd, readahead_buf, len, offset);
591	offset += len;
592	count -= len;
593	}
594
595	errno = 0;
596	}
597	#endif
598
599	#if !HAVE_READDIR_R
600	# define readdir_r aio_readdir_r
601
602	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
603
604	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
605	{
606	struct dirent *e;
607	int errorno;
608
609	pthread_mutex_lock (&readdirlock);
610
611	e = readdir (dirp);
612	errorno = errno;
613
614	if (e)
615	{
616	*res = ent;
617	strcpy (ent->d_name, e->d_name);
618	}
619	else
620	*res = 0;
621
622	pthread_mutex_unlock (&readdirlock);
623
624	errno = errorno;
625	return e ? 0 : -1;
626	}
627	#endif
628
629	/* sendfile always needs emulation */
630	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
631	{
632	ssize_t res;
633
634	if (!count)
635	return 0;
636
637	#if HAVE_SENDFILE
638	# if __linux
639	res = sendfile (ofd, ifd, &offset, count);
640
641	# elif __freebsd
642	/*
643	* Of course, the freebsd sendfile is a dire hack with no thoughts
644	* wasted on making it similar to other I/O functions.
645	*/
646	{
647	off_t sbytes;
648	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
649
650	if (res < 0 && sbytes)
651	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
652	res = sbytes;
653	}
654
655	# elif __hpux
656	res = sendfile (ofd, ifd, offset, count, 0, 0);
657
658	# elif __solaris
659	{
660	struct sendfilevec vec;
661	size_t sbytes;
662
663	vec.sfv_fd = ifd;
664	vec.sfv_flag = 0;
665	vec.sfv_off = offset;
666	vec.sfv_len = count;
667
668	res = sendfilev (ofd, &vec, 1, &sbytes);
669
670	if (res < 0 && sbytes)
671	res = sbytes;
672	}
673
674	# endif
675	#else
676	res = -1;
677	errno = ENOSYS;
678	#endif
679
680	if (res < 0
681	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
682	#if __solaris
683	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
684	#endif
685	)
686	)
687	{
688	/* emulate sendfile. this is a major pain in the ass */
689	char buf[4096];
690	res = 0;
691
692	while (count)
693	{
694	ssize_t cnt;
695
696	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
697
698	if (cnt <= 0)
699	{
700	if (cnt && !res) res = -1;
701	break;
702	}
703
704	cnt = write (ofd, buf, cnt);
705
706	if (cnt <= 0)
707	{
708	if (cnt && !res) res = -1;
709	break;
710	}
711
712	offset += cnt;
713	res += cnt;
714	count -= cnt;
715	}
716	}
717
718	return res;
719	}
720
721	/* read a full directory */
722	static int scandir_ (const char *path, void **namesp)
723	{
724	DIR *dirp = opendir (path);
725	union
726	{
727	struct dirent d;
728	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
729	} u;
730	struct dirent *entp;
731	char *name, *names;
732	int memlen = 4096;
733	int memofs = 0;
734	int res = 0;
735	int errorno;
736
737	if (!dirp)
738	return -1;
739
740	names = malloc (memlen);
741
742	for (;;)
743	{
744	errno = 0, readdir_r (dirp, &u.d, &entp);
745
746	if (!entp)
747	break;
748
749	name = entp->d_name;
750
751	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
752	{
753	int len = strlen (name) + 1;
754
755	res++;
756
757	while (memofs + len > memlen)
758	{
759	memlen *= 2;
760	names = realloc (names, memlen);
761	if (!names)
762	break;
763	}
764
765	memcpy (names + memofs, name, len);
766	memofs += len;
767	}
768	}
769
770	errorno = errno;
771	closedir (dirp);
772
773	if (errorno)
774	{
775	free (names);
776	errno = errorno;
777	res = -1;
778	}
779
780	*namesp = (void *)names;
781	return res;
782	}
783
784	/*****************************************************************************/
785
786	static void *aio_proc (void *thr_arg)
787	{
788	aio_req req;
789	int type;
790
791	do
792	{
793	pthread_mutex_lock (&reqlock);
794
795	for (;;)
796	{
797	req = reqs;
798
799	if (reqs)
800	{
801	reqs = reqs->next;
802	if (!reqs) reqe = 0;
803	}
804
805	if (req)
806	break;
807
808	pthread_cond_wait (&reqwait, &reqlock);
809	}
810
811	pthread_mutex_unlock (&reqlock);
812
813	errno = 0; /* strictly unnecessary */
814	type = req->type; /* remember type for QUIT check */
815
816	if (!(req->flags & FLAG_CANCELLED))
817	switch (type)
818	{
819	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
820	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
821
822	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
823	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
824
825	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
826	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
827	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
828
829	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
830	case REQ_CLOSE: req->result = close (req->fd); break;
831	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
832	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
833	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
834	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
835	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
836
837	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
838	case REQ_FSYNC: req->result = fsync (req->fd); break;
839	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
840
841	case REQ_SLEEP:
842	{
843	struct timeval tv;
844
845	tv.tv_sec = req->fd;
846	tv.tv_usec = req->fd2;
847
848	req->result = select (0, 0, 0, 0, &tv);
849	}
850
851	case REQ_GROUP:
852	case REQ_NOP:
853	case REQ_QUIT:
854	break;
855
856	default:
857	req->result = ENOSYS;
858	break;
859	}
860
861	req->errorno = errno;
862
863	pthread_mutex_lock (&reslock);
864
865	req->next = 0;
866
867	if (rese)
868	{
869	rese->next = req;
870	rese = req;
871	}
872	else
873	{
874	rese = ress = req;
875
876	/* write a dummy byte to the pipe so fh becomes ready */
877	write (respipe [1], &respipe, 1);
878	}
879
880	pthread_mutex_unlock (&reslock);
881	}
882	while (type != REQ_QUIT);
883
884	return 0;
885	}
886
887	/*****************************************************************************/
888
889	static void atfork_prepare (void)
890	{
891	pthread_mutex_lock (&reqlock);
892	pthread_mutex_lock (&reslock);
893	#if !HAVE_PREADWRITE
894	pthread_mutex_lock (&preadwritelock);
895	#endif
896	#if !HAVE_READDIR_R
897	pthread_mutex_lock (&readdirlock);
898	#endif
899	}
900
901	static void atfork_parent (void)
902	{
903	#if !HAVE_READDIR_R
904	pthread_mutex_unlock (&readdirlock);
905	#endif
906	#if !HAVE_PREADWRITE
907	pthread_mutex_unlock (&preadwritelock);
908	#endif
909	pthread_mutex_unlock (&reslock);
910	pthread_mutex_unlock (&reqlock);
911	}	553	}
912		554
913	static void atfork_child (void)	555	static void atfork_child (void)
914	{	556	{
915	aio_req prv;
916
917	started = 0;
918
919	while (reqs)
920	{
921	prv = reqs;
922	reqs = prv->next;
923	req_free (prv);
924	}
925
926	reqs = reqe = 0;
927
928	while (ress)
929	{
930	prv = ress;
931	ress = prv->next;
932	req_free (prv);
933	}
934
935	ress = rese = 0;
936
937	close (respipe [0]);
938	close (respipe [1]);
939	create_pipe ();	557	create_respipe ();
		558	}
940		559
941	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;
942	}	565	}
943		566
944	#define dREQ \	567	#define dREQ \
		568	SV *cb_cv; \
945	aio_req req; \	569	aio_req req; \
946	int req_pri = next_pri; \	570	int req_pri = next_pri; \
947	next_pri = DEFAULT_PRI + PRI_BIAS; \	571	next_pri = EIO_PRI_DEFAULT; \
948	\	572	\
949	if (SvOK (callback) && !SvROK (callback)) \	573	cb_cv = get_cb (callback); \
950	croak ("callback must be undef or of reference type"); \
951	\	574	\
952	Newz (0, req, 1, aio_cb); \	575	Newz (0, req, 1, eio_req); \
953	if (!req) \	576	if (!req) \
954	croak ("out of memory during aio_req allocation"); \	577	croak ("out of memory during eio_req allocation"); \
955	\	578	\
956	req->callback = newSVsv (callback); \	579	req->callback = SvREFCNT_inc (cb_cv); \
957	req->pri = req_pri	580	req->pri = req_pri
958		581
959	#define REQ_SEND \	582	#define REQ_SEND \
		583	PUTBACK; \
960	req_send (req); \	584	req_submit (req); \
		585	SPAGAIN; \
961	\	586	\
962	if (GIMME_V != G_VOID) \	587	if (GIMME_V != G_VOID) \
963	XPUSHs (req_sv (req, AIO_REQ_KLASS));	588	XPUSHs (req_sv (req, aio_req_stash));
964		589
965	MODULE = IO::AIO PACKAGE = IO::AIO	590	MODULE = IO::AIO PACKAGE = IO::AIO
966		591
967	PROTOTYPES: ENABLE	592	PROTOTYPES: ENABLE
968		593
969	BOOT:	594	BOOT:
970	{	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
971	HV *stash = gv_stashpv ("IO::AIO", 1);	660	aio_stash = gv_stashpv ("IO::AIO" , 1);
972	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	661	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
973	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	662	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
974	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
975		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
976	create_pipe ();	667	create_respipe ();
977	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
978	}
979		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
980	void	676	void
981	min_parallel (nthreads)	677	max_poll_reqs (int nreqs)
982	int nthreads
983	PROTOTYPE: $	678	PROTOTYPE: $
		679	CODE:
		680	eio_set_max_poll_reqs (nreqs);
984		681
985	void	682	void
986	max_parallel (nthreads)	683	max_poll_time (double nseconds)
987	int nthreads
988	PROTOTYPE: $	684	PROTOTYPE: $
989
990	int
991	max_outstanding (nreqs)
992	int nreqs
993	PROTOTYPE: $
994	CODE:	685	CODE:
995	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:
996	max_outstanding = nreqs;	710	max_outstanding = maxreqs;
997		711
998	void	712	void
999	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	713	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1000	SV * pathname
1001	int flags
1002	int mode
1003	SV * callback
1004	PROTOTYPE: $$$;$	714	PROTOTYPE: $$$;$
1005	PPCODE:	715	PPCODE:
1006	{	716	{
1007	dREQ;	717	dREQ;
1008		718
1009	req->type = REQ_OPEN;	719	req->type = EIO_OPEN;
1010	req->data = newSVsv (pathname);	720	req->sv1 = newSVsv (pathname);
1011	req->dataptr = SvPVbyte_nolen (req->data);	721	req->ptr1 = SvPVbyte_nolen (req->sv1);
1012	req->fd = flags;	722	req->int1 = flags;
1013	req->mode = mode;	723	req->int2 = mode;
1014		724
1015	REQ_SEND;	725	REQ_SEND;
1016	}	726	}
1017		727
1018	void	728	void
1019	aio_close (fh,callback=&PL_sv_undef)	729	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1020	SV * fh
1021	SV * callback
1022	PROTOTYPE: $;$	730	PROTOTYPE: $;$
1023	ALIAS:	731	ALIAS:
1024	aio_close = REQ_CLOSE
1025	aio_fsync = REQ_FSYNC	732	aio_fsync = EIO_FSYNC
1026	aio_fdatasync = REQ_FDATASYNC	733	aio_fdatasync = EIO_FDATASYNC
1027	PPCODE:	734	PPCODE:
1028	{	735	{
		736	int fd = s_fileno_croak (fh, 0);
1029	dREQ;	737	dREQ;
1030		738
1031	req->type = ix;	739	req->type = ix;
1032	req->fh = newSVsv (fh);	740	req->sv1 = newSVsv (fh);
1033	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	741	req->int1 = fd;
1034		742
1035	REQ_SEND (req);	743	REQ_SEND (req);
1036	}	744	}
1037		745
1038	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: $$$$;$
		749	PPCODE:
		750	{
		751	int fd = s_fileno_croak (fh, 0);
		752	dREQ;
		753
		754	req->type = EIO_SYNC_FILE_RANGE;
		755	req->sv1 = newSVsv (fh);
		756	req->int1 = fd;
		757	req->offs = offset;
		758	req->size = nbytes;
		759	req->int2 = flags;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
		765	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		766	PROTOTYPE: $;$
		767	PPCODE:
		768	{
		769	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		770	int fd = s_fileno_croak (fh, 0);
		771	dREQ;
		772
		773	if (close_pipe < 0)
		774	{
		775	int pipefd [2];
		776
		777	if (pipe (pipefd) < 0
		778	|| close (pipefd [1]) < 0
		779	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		780	abort (); /*D*/
		781
		782	close_pipe = pipefd [0];
		783	}
		784
		785	req->type = EIO_DUP2;
		786	req->int1 = close_pipe;
		787	req->sv2 = newSVsv (fh);
		788	req->int2 = fd;
		789
		790	REQ_SEND (req);
		791	}
		792
		793	void
1039	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	794	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1040	SV * fh
1041	UV offset
1042	UV length
1043	SV * data
1044	UV dataoffset
1045	SV * callback
1046	ALIAS:	795	ALIAS:
1047	aio_read = REQ_READ	796	aio_read = EIO_READ
1048	aio_write = REQ_WRITE	797	aio_write = EIO_WRITE
1049	PROTOTYPE: $$$$$;$	798	PROTOTYPE: $$$$$;$
1050	PPCODE:	799	PPCODE:
1051	{	800	{
1052	aio_req req;
1053	STRLEN svlen;	801	STRLEN svlen;
		802	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1054	char *svptr = SvPVbyte (data, svlen);	803	char *svptr = SvPVbyte (data, svlen);
1055		804	UV len = SvUV (length);
1056	SvUPGRADE (data, SVt_PV);
1057	SvPOK_on (data);
1058		805
1059	if (dataoffset < 0)	806	if (dataoffset < 0)
1060	dataoffset += svlen;	807	dataoffset += svlen;
1061		808
1062	if (dataoffset < 0 || dataoffset > svlen)	809	if (dataoffset < 0 || dataoffset > svlen)
1063	croak ("data offset outside of string");	810	croak ("dataoffset outside of data scalar");
1064		811
1065	if (ix == REQ_WRITE)	812	if (ix == EIO_WRITE)
1066	{	813	{
1067	/* write: check length and adjust. */	814	/* write: check length and adjust. */
1068	if (length < 0 || length + dataoffset > svlen)	815	if (!SvOK (length) || len + dataoffset > svlen)
1069	length = svlen - dataoffset;	816	len = svlen - dataoffset;
1070	}	817	}
1071	else	818	else
1072	{	819	{
1073	/* read: grow scalar as necessary */	820	/* read: check type and grow scalar as necessary */
		821	SvUPGRADE (data, SVt_PV);
1074	svptr = SvGROW (data, length + dataoffset);	822	svptr = SvGROW (data, len + dataoffset + 1);
1075	}	823	}
1076
1077	if (length < 0)
1078	croak ("length must not be negative");
1079		824
1080	{	825	{
1081	dREQ;	826	dREQ;
1082		827
1083	req->type = ix;	828	req->type = ix;
1084	req->fh = newSVsv (fh);	829	req->sv1 = newSVsv (fh);
1085	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	830	req->int1 = fd;
1086	: IoOFP (sv_2io (fh)));	831	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1087	req->offset = offset;	832	req->size = len;
1088	req->length = length;
1089	req->data = SvREFCNT_inc (data);	833	req->sv2 = SvREFCNT_inc (data);
1090	req->dataptr = (char *)svptr + dataoffset;	834	req->ptr2 = (char *)svptr + dataoffset;
		835	req->stroffset = dataoffset;
1091		836
1092	if (!SvREADONLY (data))	837	if (!SvREADONLY (data))
1093	{	838	{
1094	SvREADONLY_on (data);	839	SvREADONLY_on (data);
1095	req->data2ptr = (void *)data;	840	req->flags |= FLAG_SV2_RO_OFF;
1096	}	841	}
1097		842
1098	REQ_SEND;	843	REQ_SEND;
1099	}	844	}
1100	}	845	}
1101		846
1102	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
1103	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)
1104	SV * out_fh
1105	SV * in_fh
1106	UV in_offset
1107	UV length
1108	SV * callback
1109	PROTOTYPE: $$$$;$	864	PROTOTYPE: $$$$;$
1110	PPCODE:	865	PPCODE:
1111	{	866	{
		867	int ifd = s_fileno_croak (in_fh , 0);
		868	int ofd = s_fileno_croak (out_fh, 1);
1112	dREQ;	869	dREQ;
1113		870
1114	req->type = REQ_SENDFILE;	871	req->type = EIO_SENDFILE;
1115	req->fh = newSVsv (out_fh);	872	req->sv1 = newSVsv (out_fh);
1116	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	873	req->int1 = ofd;
1117	req->fh2 = newSVsv (in_fh);	874	req->sv2 = newSVsv (in_fh);
1118	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	875	req->int2 = ifd;
1119	req->offset = in_offset;	876	req->offs = in_offset;
1120	req->length = length;	877	req->size = length;
1121		878
1122	REQ_SEND;	879	REQ_SEND;
1123	}	880	}
1124		881
1125	void	882	void
1126	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	883	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1127	SV * fh
1128	UV offset
1129	IV length
1130	SV * callback
1131	PROTOTYPE: $$$;$	884	PROTOTYPE: $$$;$
1132	PPCODE:	885	PPCODE:
1133	{	886	{
		887	int fd = s_fileno_croak (fh, 0);
1134	dREQ;	888	dREQ;
1135		889
1136	req->type = REQ_READAHEAD;	890	req->type = EIO_READAHEAD;
1137	req->fh = newSVsv (fh);	891	req->sv1 = newSVsv (fh);
1138	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	892	req->int1 = fd;
1139	req->offset = offset;	893	req->offs = offset;
1140	req->length = length;	894	req->size = length;
1141		895
1142	REQ_SEND;	896	REQ_SEND;
1143	}	897	}
1144		898
1145	void	899	void
1146	aio_stat (fh_or_path,callback=&PL_sv_undef)	900	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1147	SV * fh_or_path
1148	SV * callback
1149	ALIAS:	901	ALIAS:
1150	aio_stat = REQ_STAT	902	aio_stat = EIO_STAT
1151	aio_lstat = REQ_LSTAT	903	aio_lstat = EIO_LSTAT
		904	aio_statvfs = EIO_STATVFS
1152	PPCODE:	905	PPCODE:
1153	{	906	{
1154	dREQ;	907	dREQ;
1155		908
1156	New (0, req->statdata, 1, Stat_t);	909	req->sv1 = newSVsv (fh_or_path);
1157	if (!req->statdata)
1158	{
1159	req_free (req);
1160	croak ("out of memory during aio_req->statdata allocation");
1161	}
1162		910
1163	if (SvPOK (fh_or_path))	911	if (SvPOK (req->sv1))
1164	{	912	{
1165	req->type = ix;	913	req->type = ix;
1166	req->data = newSVsv (fh_or_path);
1167	req->dataptr = SvPVbyte_nolen (req->data);	914	req->ptr1 = SvPVbyte_nolen (req->sv1);
1168	}	915	}
1169	else	916	else
1170	{	917	{
1171	req->type = REQ_FSTAT;	918	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1172	req->fh = newSVsv (fh_or_path);
1173	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	919	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1174	}	920	}
1175		921
1176	REQ_SEND;	922	REQ_SEND;
1177	}	923	}
1178		924
1179	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
1180	aio_unlink (pathname,callback=&PL_sv_undef)	1040	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1181	SV * pathname
1182	SV * callback
1183	ALIAS:	1041	ALIAS:
1184	aio_unlink = REQ_UNLINK	1042	aio_unlink = EIO_UNLINK
1185	aio_rmdir = REQ_RMDIR	1043	aio_rmdir = EIO_RMDIR
1186	aio_readdir = REQ_READDIR	1044	aio_readdir = EIO_READDIR
1187	PPCODE:	1045	PPCODE:
1188	{	1046	{
1189	dREQ;	1047	dREQ;
1190		1048
1191	req->type = ix;	1049	req->type = ix;
1192	req->data = newSVsv (pathname);	1050	req->sv1 = newSVsv (pathname);
1193	req->dataptr = SvPVbyte_nolen (req->data);	1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
1194		1052
1195	REQ_SEND;	1053	REQ_SEND;
1196	}	1054	}
1197		1055
1198	void	1056	void
1199	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1057	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1200	SV * oldpath
1201	SV * newpath
1202	SV * callback
1203	ALIAS:	1058	ALIAS:
1204	aio_link = REQ_LINK	1059	aio_link = EIO_LINK
1205	aio_symlink = REQ_SYMLINK	1060	aio_symlink = EIO_SYMLINK
1206	aio_rename = REQ_RENAME	1061	aio_rename = EIO_RENAME
1207	PPCODE:	1062	PPCODE:
1208	{	1063	{
1209	dREQ;	1064	dREQ;
1210		1065
1211	req->type = ix;	1066	req->type = ix;
1212	req->fh = newSVsv (oldpath);	1067	req->sv1 = newSVsv (oldpath);
1213	req->data2ptr = SvPVbyte_nolen (req->fh);	1068	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	req->data = newSVsv (newpath);	1069	req->sv2 = newSVsv (newpath);
1215	req->dataptr = SvPVbyte_nolen (req->data);	1070	req->ptr2 = SvPVbyte_nolen (req->sv2);
1216		1071
1217	REQ_SEND;	1072	REQ_SEND;
1218	}	1073	}
1219		1074
1220	void	1075	void
1221	aio_sleep (delay,callback=&PL_sv_undef)	1076	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1222	double delay
1223	SV * callback
1224	PPCODE:	1077	PPCODE:
1225	{	1078	{
1226	dREQ;	1079	dREQ;
1227		1080
1228	req->type = REQ_SLEEP;	1081	req->type = EIO_MKNOD;
1229	req->fd = delay < 0. ? 0 : delay;	1082	req->sv1 = newSVsv (pathname);
1230	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1083	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1084	req->int2 = (mode_t)mode;
		1085	req->offs = dev;
		1086
1232	REQ_SEND;	1087	REQ_SEND;
1233	}	1088	}
1234		1089
1235	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
1236	aio_group (callback=&PL_sv_undef)	1137	aio_group (SV *callback=&PL_sv_undef)
1237	SV * callback
1238	PROTOTYPE: ;$	1138	PROTOTYPE: ;$
1239	PPCODE:	1139	PPCODE:
1240	{	1140	{
1241	dREQ;	1141	dREQ;
1242		1142
1243	req->type = REQ_GROUP;	1143	req->type = EIO_GROUP;
		1144
1244	req_send (req);	1145	req_submit (req);
1245
1246	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1146	XPUSHs (req_sv (req, aio_grp_stash));
1247	}	1147	}
1248		1148
1249	void	1149	void
1250	aio_nop (callback=&PL_sv_undef)	1150	aio_nop (SV *callback=&PL_sv_undef)
1251	SV * callback	1151	ALIAS:
		1152	aio_nop = EIO_NOP
		1153	aio_sync = EIO_SYNC
1252	PPCODE:	1154	PPCODE:
1253	{	1155	{
1254	dREQ;	1156	dREQ;
1255		1157
1256	req->type = REQ_NOP;	1158	req->type = ix;
1257		1159
1258	REQ_SEND;	1160	REQ_SEND;
1259	}	1161	}
1260		1162
1261	#if 0	1163	int
1262		1164	aioreq_pri (int pri = 0)
1263	void	1165	PROTOTYPE: ;$
1264	aio_pri (int pri = DEFAULT_PRI)
1265	CODE:	1166	CODE:
		1167	RETVAL = next_pri;
		1168	if (items > 0)
		1169	{
1266	if (pri < PRI_MIN) pri = PRI_MIN;	1170	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1267	if (pri > PRI_MAX) pri = PRI_MAX;	1171	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1268	next_pri = pri + PRI_BIAS;	1172	next_pri = pri;
		1173	}
		1174	OUTPUT:
		1175	RETVAL
1269		1176
1270	#endif	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;
1271		1184
1272	void	1185	void
1273	flush ()	1186	flush ()
1274	PROTOTYPE:	1187	PROTOTYPE:
1275	CODE:	1188	CODE:
1276	while (nreqs)	1189	while (eio_nreqs ())
1277	{	1190	{
1278	poll_wait ();	1191	poll_wait ();
1279	poll_cb ();	1192	poll_cb ();
1280	}	1193	}
1281		1194
1282	void	1195	int
1283	poll()	1196	poll()
1284	PROTOTYPE:	1197	PROTOTYPE:
1285	CODE:	1198	CODE:
1286	if (nreqs)
1287	{
1288	poll_wait ();	1199	poll_wait ();
1289	poll_cb ();	1200	RETVAL = poll_cb ();
1290	}	1201	OUTPUT:
		1202	RETVAL
1291		1203
1292	int	1204	int
1293	poll_fileno()	1205	poll_fileno()
1294	PROTOTYPE:	1206	PROTOTYPE:
1295	CODE:	1207	CODE:
1296	RETVAL = respipe [0];	1208	RETVAL = s_epipe_fd (&respipe);
1297	OUTPUT:	1209	OUTPUT:
1298	RETVAL	1210	RETVAL
1299		1211
1300	int	1212	int
1301	poll_cb(...)	1213	poll_cb(...)
…		…
1307		1219
1308	void	1220	void
1309	poll_wait()	1221	poll_wait()
1310	PROTOTYPE:	1222	PROTOTYPE:
1311	CODE:	1223	CODE:
1312	if (nreqs)
1313	poll_wait ();	1224	poll_wait ();
1314		1225
1315	int	1226	int
1316	nreqs()	1227	nreqs()
1317	PROTOTYPE:	1228	PROTOTYPE:
1318	CODE:	1229	CODE:
1319	RETVAL = nreqs;	1230	RETVAL = eio_nreqs ();
1320	OUTPUT:	1231	OUTPUT:
1321	RETVAL	1232	RETVAL
1322		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
1323	PROTOTYPES: DISABLE	1313	PROTOTYPES: DISABLE
1324		1314
1325	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1315	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1326		1316
1327	void	1317	void
1328	cancel (aio_req_ornot req)	1318	cancel (aio_req_ornot req)
1329	PROTOTYPE:
1330	CODE:	1319	CODE:
1331	req_cancel (req);	1320	eio_cancel (req);
1332		1321
1333	void	1322	void
1334	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1323	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1335	CODE:	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
1336	SvREFCNT_dec (req->callback);	1333	SvREFCNT_dec (req->callback);
1337	req->callback = newSVsv (callback);	1334	req->callback = SvREFCNT_inc (cb_cv);
		1335	}
		1336	}
1338		1337
1339	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1338	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1340		1339
1341	void	1340	void
1342	add (aio_req grp, ...)	1341	add (aio_req grp, ...)
1343	PPCODE:	1342	PPCODE:
1344	{	1343	{
1345	int i;	1344	int i;
1346	aio_req req;
1347		1345
1348	if (grp->fd == 2)	1346	if (grp->int1 == 2)
1349	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");
1350		1348
1351	for (i = 1; i < items; ++i )	1349	for (i = 1; i < items; ++i )
1352	{	1350	{
		1351	aio_req req;
		1352
1353	if (GIMME_V != G_VOID)	1353	if (GIMME_V != G_VOID)
1354	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1354	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1355		1355
1356	req = SvAIO_REQ (ST (i));	1356	req = SvAIO_REQ (ST (i));
1357		1357
1358	if (req)	1358	if (req)
1359	{	1359	eio_grp_add (grp, req);
1360	++grp->length;
1361	req->grp = grp;
1362
1363	req->grp_prev = 0;
1364	req->grp_next = grp->grp_first;
1365
1366	if (grp->grp_first)
1367	grp->grp_first->grp_prev = req;
1368
1369	grp->grp_first = req;
1370	}	1360	}
1371	}
1372	}	1361	}
		1362
		1363	void
		1364	cancel_subs (aio_req_ornot req)
		1365	CODE:
		1366	req_cancel_subs (req);
1373		1367
1374	void	1368	void
1375	result (aio_req grp, ...)	1369	result (aio_req grp, ...)
1376	CODE:	1370	CODE:
1377	{	1371	{
1378	int i;	1372	int i;
		1373	AV *av;
		1374
		1375	grp->errorno = errno;
		1376
1379	AV *av = newAV ();	1377	av = newAV ();
		1378	av_extend (av, items - 1);
1380		1379
1381	for (i = 1; i < items; ++i )	1380	for (i = 1; i < items; ++i )
1382	av_push (av, newSVsv (ST (i)));	1381	av_push (av, newSVsv (ST (i)));
1383		1382
1384	SvREFCNT_dec (grp->data);	1383	SvREFCNT_dec (grp->sv1);
1385	grp->data = (SV *)av;	1384	grp->sv1 = (SV *)av;
1386	}	1385	}
1387		1386
1388	void	1387	void
		1388	errno (aio_req grp, int errorno = errno)
		1389	CODE:
		1390	grp->errorno = errorno;
		1391
		1392	void
1389	feed_limit (aio_req grp, int limit)	1393	limit (aio_req grp, int limit)
1390	CODE:	1394	CODE:
1391	grp->fd2 = limit;	1395	eio_grp_limit (grp, limit);
1392	aio_grp_feed (grp);
1393		1396
1394	void	1397	void
1395	feed (aio_req grp, SV *callback=&PL_sv_undef)	1398	feed (aio_req grp, SV *callback=&PL_sv_undef)
1396	CODE:	1399	CODE:
1397	{	1400	{
1398	SvREFCNT_dec (grp->fh2);	1401	SvREFCNT_dec (grp->sv2);
1399	grp->fh2 = newSVsv (callback);	1402	grp->sv2 = newSVsv (callback);
		1403	grp->feed = aio_grp_feed;
1400		1404
1401	if (grp->fd2 <= 0)	1405	if (grp->int2 <= 0)
1402	grp->fd2 = 2;	1406	grp->int2 = 2;
1403		1407
1404	aio_grp_feed (grp);	1408	eio_grp_limit (grp, grp->int2);
1405	}	1409	}
1406		1410

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