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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.35 by root, Tue Aug 23 01:16:50 2005 UTC vs.
Revision 1.150 by root, Wed Jul 1 08:11:24 2009 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
10	#include <pthread.h>	9	#include <stddef.h>
11		10	#include <stdlib.h>
		11	#include <errno.h>
12	#include <sys/types.h>	12	#include <sys/types.h>
13	#include <sys/stat.h>	13	#include <sys/stat.h>
14
15	#include <unistd.h>	14	#include <limits.h>
16	#include <fcntl.h>	15	#include <fcntl.h>
17	#include <signal.h>
18	#include <sched.h>	16	#include <sched.h>
19		17
20	#if HAVE_SENDFILE	18	/* perl namespace pollution */
21	# if __linux	19	#undef VERSION
22	# include <sys/sendfile.h>	20
23	# elif __freebsd	21	#ifdef _WIN32
24	# include <sys/socket.h>	22
25	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
26	# elif __hpux	24	# undef malloc
27	# include <sys/socket.h>	25	# undef free
28	# elif __solaris /* not yet */	26
29	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
30	# else	59	#else
31	# error sendfile support requested but not available	60
32	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
33	#endif	68	#endif
34		69
35	#if __ia64	70	/* perl stupidly overrides readdir and maybe others */
36	# define STACKSIZE 65536	71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
37	#else	83	#else
38	# define STACKSIZE 4096	84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
39	#endif	87	#endif
40		88
		89	/*****************************************************************************/
		90
		91	#if __GNUC__ >= 3
		92	# define expect(expr,value) __builtin_expect ((expr),(value))
		93	#else
		94	# define expect(expr,value) (expr)
		95	#endif
		96
		97	#define expect_false(expr) expect ((expr) != 0, 0)
		98	#define expect_true(expr) expect ((expr) != 0, 1)
		99
		100	/*****************************************************************************/
		101
		102	static HV *stash;
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	#define AIO_REQ_KLASS "IO::AIO::REQ"
		108	#define AIO_GRP_KLASS "IO::AIO::GRP"
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/eio.h"
		119
		120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	# define NO_FADVISE 1
		123	#endif
		124
		125	#ifndef POSIX_FADV_SEQUENTIAL
		126	# define POSIX_FADV_SEQUENTIAL 0
		127	#endif
		128
		129	#ifndef POSIX_FADV_RANDOM
		130	# define POSIX_FADV_RANDOM 0
		131	#endif
		132
		133	#ifndef POSIX_FADV_NOREUSE
		134	# define POSIX_FADV_NOREUSE 0
		135	#endif
		136
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	static int req_invoke (eio_req *req);
		146	#define EIO_FINISH(req) req_invoke (req)
		147	static void req_destroy (eio_req *grp);
		148	#define EIO_DESTROY(req) req_destroy (req)
		149
41	enum {	150	enum {
42	REQ_QUIT,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
43	REQ_OPEN, REQ_CLOSE,
44	REQ_READ, REQ_WRITE, REQ_READAHEAD,
45	REQ_SENDFILE,
46	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
47	REQ_FSYNC, REQ_FDATASYNC,
48	REQ_UNLINK, REQ_RMDIR,
49	REQ_SYMLINK,
50	};	152	};
51		153
52	typedef struct aio_cb {	154	#include "libeio/eio.c"
53	struct aio_cb *volatile next;
54		155
55	int type;
56
57	int fd, fd2;
58	off_t offset;
59	size_t length;
60	ssize_t result;
61	mode_t mode; /* open */
62	int errorno;
63	SV *data, *callback;
64	SV *fh, *fh2;
65	void *dataptr, *data2ptr;
66	STRLEN dataoffset;
67
68	Stat_t *statdata;
69	} aio_cb;
70
71	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
		157	typedef eio_req *aio_req_ornot;
72		158
73	static int started, wanted;	159	static SV *on_next_submit;
74	static volatile int nreqs;	160	static int next_pri = EIO_PRI_DEFAULT;
75	static int max_outstanding = 1<<30;	161	static int max_outstanding;
76	static int respipe [2];
77		162
78	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	163	static int respipe_osf [2], respipe [2] = { -1, -1 };
79	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
80	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81		164
82	static volatile aio_req reqs, reqe; /* queue start, queue end */	165	static void req_destroy (aio_req req);
83	static volatile aio_req ress, rese; /* queue start, queue end */
84
85	static void free_req (aio_req req)	166	static void req_cancel (aio_req req);
86	{
87	if (req->data)
88	SvREFCNT_dec (req->data);
89		167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	char buf [4];
		178	while (respipe_read (respipe [0], buf, 4) == 4)
		179	;
		180	}
		181
		182	/* must be called at most once */
		183	static SV *req_sv (aio_req req, const char *klass)
		184	{
		185	if (!req->self)
		186	{
		187	req->self = (SV *)newHV ();
		188	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		189	}
		190
		191	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		192	}
		193
		194	static aio_req SvAIO_REQ (SV *sv)
		195	{
		196	MAGIC *mg;
		197
		198	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		199	croak ("object of class " AIO_REQ_KLASS " expected");
		200
		201	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		202
		203	return mg ? (aio_req)mg->mg_ptr : 0;
		204	}
		205
		206	static void aio_grp_feed (aio_req grp)
		207	{
		208	if (grp->sv2 && SvOK (grp->sv2))
		209	{
		210	dSP;
		211
		212	ENTER;
		213	SAVETMPS;
		214	PUSHMARK (SP);
		215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		216	PUTBACK;
		217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		218	SPAGAIN;
		219	FREETMPS;
		220	LEAVE;
		221	}
		222	}
		223
		224	static void req_submit (eio_req *req)
		225	{
		226	eio_submit (req);
		227
		228	if (expect_false (on_next_submit))
		229	{
		230	dSP;
		231	SV *cb = sv_2mortal (on_next_submit);
		232
		233	on_next_submit = 0;
		234
		235	PUSHMARK (SP);
		236	PUTBACK;
		237	call_sv (cb, G_DISCARD | G_EVAL);
		238	}
		239	}
		240
		241	static int req_invoke (eio_req *req)
		242	{
		243	dSP;
		244
		245	if (req->flags & FLAG_SV2_RO_OFF)
		246	SvREADONLY_off (req->sv2);
		247
		248	if (!EIO_CANCELLED (req) && req->callback)
		249	{
		250	ENTER;
		251	SAVETMPS;
		252	PUSHMARK (SP);
		253	EXTEND (SP, 1);
		254
		255	switch (req->type)
		256	{
		257	case EIO_READDIR:
		258	{
		259	SV *rv = &PL_sv_undef;
		260
		261	if (req->result >= 0)
		262	{
		263	int i;
		264	char *names = (char *)req->ptr2;
		265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		266	AV *av = newAV ();
		267
		268	av_extend (av, req->result - 1);
		269
		270	for (i = 0; i < req->result; ++i)
		271	{
		272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		275
		276	if (req->int1 & EIO_READDIR_CUSTOM2)
		277	{
		278	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		279	AV *avent = newAV ();
		280
		281	av_extend (avent, 2);
		282
		283	if (!sv_type [ent->type])
		284	{
		285	sv_type [ent->type] = newSViv (ent->type);
		286	SvREADONLY_on (sv_type [ent->type]);
		287	}
		288
		289	av_store (avent, 0, namesv);
		290	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		291	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		292
		293	av_store (av, i, newRV_noinc ((SV *)avent));
		294	}
		295	else
		296	av_store (av, i, namesv);
		297
		298	++ent;
		299	}
		300	else
		301	{
		302	SV *name = newSVpv (names, 0);
		303	av_store (av, i, name);
		304	names += SvCUR (name) + 1;
		305	}
		306	}
		307
		308	rv = sv_2mortal (newRV_noinc ((SV *)av));
		309	}
		310
		311	PUSHs (rv);
		312
		313	if (req->int1 & EIO_READDIR_CUSTOM1)
		314	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		315	}
		316	break;
		317
		318	case EIO_OPEN:
		319	{
		320	/* convert fd to fh */
		321	SV *fh = &PL_sv_undef;
		322
		323	if (req->result >= 0)
		324	{
		325	GV *gv = (GV *)sv_newmortal ();
		326	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		327	char sym [64];
		328	int symlen;
		329
		330	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		331	gv_init (gv, stash, sym, symlen, 0);
		332
		333	symlen = snprintf (
		334	sym,
		335	sizeof (sym),
		336	"%s&=%d",
		337	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		338	(int)req->result
		339	);
		340
		341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		342	fh = (SV *)gv;
		343	}
		344
		345	PUSHs (fh);
		346	}
		347	break;
		348
		349	case EIO_GROUP:
		350	req->int1 = 2; /* mark group as finished */
		351
		352	if (req->sv1)
		353	{
		354	int i;
		355	AV *av = (AV *)req->sv1;
		356
		357	EXTEND (SP, AvFILL (av) + 1);
		358	for (i = 0; i <= AvFILL (av); ++i)
		359	PUSHs (*av_fetch (av, i, 0));
		360	}
		361	break;
		362
		363	case EIO_NOP:
		364	case EIO_BUSY:
		365	break;
		366
		367	case EIO_READLINK:
		368	if (req->result > 0)
		369	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		370	break;
		371
		372	case EIO_STAT:
		373	case EIO_LSTAT:
		374	case EIO_FSTAT:
		375	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		376	PL_laststatval = req->result;
		377	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		378	PUSHs (sv_2mortal (newSViv (req->result)));
		379	break;
		380
		381	case EIO_READ:
		382	{
		383	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		384	*SvEND (req->sv2) = 0;
		385	SvPOK_only (req->sv2);
		386	SvSETMAGIC (req->sv2);
		387	PUSHs (sv_2mortal (newSViv (req->result)));
		388	}
		389	break;
		390
		391	case EIO_DUP2:
		392	if (req->result > 0)
		393	req->result = 0;
		394	/* FALLTHROUGH */
		395
		396	default:
		397	PUSHs (sv_2mortal (newSViv (req->result)));
		398	break;
		399	}
		400
		401	errno = req->errorno;
		402
		403	PUTBACK;
		404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		405	SPAGAIN;
		406
		407	FREETMPS;
		408	LEAVE;
		409
		410	PUTBACK;
		411	}
		412
		413	return !!SvTRUE (ERRSV);
		414	}
		415
		416	static void req_destroy (aio_req req)
		417	{
90	if (req->fh)	418	if (req->self)
		419	{
		420	sv_unmagic (req->self, PERL_MAGIC_ext);
91	SvREFCNT_dec (req->fh);	421	SvREFCNT_dec (req->self);
		422	}
92		423
93	if (req->fh2)	424	SvREFCNT_dec (req->sv1);
94	SvREFCNT_dec (req->fh2);	425	SvREFCNT_dec (req->sv2);
95
96	if (req->statdata)
97	Safefree (req->statdata);
98
99	if (req->callback)
100	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
101		427
102	Safefree (req);	428	Safefree (req);
103	}	429	}
104		430
		431	static void req_cancel_subs (aio_req grp)
		432	{
		433	aio_req sub;
		434
		435	if (grp->type != EIO_GROUP)
		436	return;
		437
		438	SvREFCNT_dec (grp->sv2);
		439	grp->sv2 = 0;
		440
		441	eio_grp_cancel (grp);
		442	}
		443
		444	#ifdef USE_SOCKETS_AS_HANDLES
		445	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		446	#else
		447	# define TO_SOCKET(x) (x)
		448	#endif
		449
105	static void	450	static void
106	poll_wait ()	451	create_respipe (void)
107	{	452	{
108	if (nreqs && !ress)	453	int old_readfd = respipe [0];
		454
		455	if (respipe [1] >= 0)
		456	respipe_close (TO_SOCKET (respipe [1]));
		457
		458	#ifdef _WIN32
		459	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		460	#else
		461	if (pipe (respipe))
		462	#endif
		463	croak ("unable to initialize result pipe");
		464
		465	if (old_readfd >= 0)
109	{	466	{
110	fd_set rfd;	467	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
111	FD_ZERO(&rfd);	468	croak ("unable to initialize result pipe(2)");
112	FD_SET(respipe [0], &rfd);
113		469
114	select (respipe [0] + 1, &rfd, 0, 0, 0);	470	respipe_close (respipe [0]);
		471	respipe [0] = old_readfd;
115	}	472	}
116	}
117		473
118	static int	474	#ifdef _WIN32
119	poll_cb ()	475	int arg = 1;
120	{	476	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
121	dSP;	477	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
122	int count = 0;	478	#else
123	int do_croak = 0;	479	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
124	aio_req req;	480	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		481	#endif
		482	croak ("unable to initialize result pipe(3)");
125		483
		484	respipe_osf [0] = TO_SOCKET (respipe [0]);
		485	respipe_osf [1] = TO_SOCKET (respipe [1]);
		486	}
		487
		488	static void poll_wait (void)
		489	{
		490	fd_set rfd;
		491
		492	while (eio_nreqs ())
		493	{
		494	int size;
		495
		496	X_LOCK (reslock);
		497	size = res_queue.size;
		498	X_UNLOCK (reslock);
		499
		500	if (size)
		501	return;
		502
		503	etp_maybe_start_thread ();
		504
		505	FD_ZERO (&rfd);
		506	FD_SET (respipe [0], &rfd);
		507
		508	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		509	}
		510	}
		511
		512	static int poll_cb (void)
		513	{
126	for (;;)	514	for (;;)
127	{	515	{
128	pthread_mutex_lock (&reslock);	516	int res = eio_poll ();
129	req = ress;
130		517
131	if (req)	518	if (res > 0)
132	{
133	ress = req->next;
134
135	if (!ress)
136	{
137	/* read any signals sent by the worker threads */
138	char buf [32];
139	while (read (respipe [0], buf, 32) == 32)
140	;
141
142	rese = 0;
143	}
144	}
145
146	pthread_mutex_unlock (&reslock);
147
148	if (!req)
149	break;
150
151	nreqs--;
152
153	if (req->type == REQ_QUIT)
154	started--;
155	else
156	{
157	int errorno = errno;
158	errno = req->errorno;
159
160	if (req->type == REQ_READ)
161	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162
163	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
164	SvREADONLY_off (req->data);
165
166	if (req->statdata)
167	{
168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169	PL_laststatval = req->result;
170	PL_statcache = *(req->statdata);
171	}
172
173	ENTER;
174	PUSHMARK (SP);
175	XPUSHs (sv_2mortal (newSViv (req->result)));
176
177	if (req->type == REQ_OPEN)
178	{
179	/* convert fd to fh */
180	SV *fh;
181
182	PUTBACK;
183	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
184	SPAGAIN;
185
186	fh = SvREFCNT_inc (POPs);
187
188	PUSHMARK (SP);
189	XPUSHs (sv_2mortal (fh));
190	}
191
192	if (SvOK (req->callback))
193	{
194	PUTBACK;
195	call_sv (req->callback, G_VOID | G_EVAL);
196	SPAGAIN;
197
198	if (SvTRUE (ERRSV))
199	{
200	free_req (req);
201	croak (0);	519	croak (0);
202	}
203	}
204		520
205	LEAVE;	521	if (!max_outstanding || max_outstanding > eio_nreqs ())
		522	return res;
206		523
207	errno = errorno;	524	poll_wait ();
208	count++;
209	}
210
211	free_req (req);
212	}	525	}
213
214	return count;
215	}
216
217	static void *aio_proc(void *arg);
218
219	static void
220	start_thread (void)
221	{
222	sigset_t fullsigset, oldsigset;
223	pthread_t tid;
224	pthread_attr_t attr;
225
226	pthread_attr_init (&attr);
227	pthread_attr_setstacksize (&attr, STACKSIZE);
228	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
229
230	sigfillset (&fullsigset);
231	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
232
233	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
234	started++;
235
236	sigprocmask (SIG_SETMASK, &oldsigset, 0);
237	}
238
239	static void
240	send_req (aio_req req)
241	{
242	while (started < wanted && nreqs >= started)
243	start_thread ();
244
245	nreqs++;
246
247	pthread_mutex_lock (&reqlock);
248
249	req->next = 0;
250
251	if (reqe)
252	{
253	reqe->next = req;
254	reqe = req;
255	}
256	else
257	reqe = reqs = req;
258
259	pthread_cond_signal (&reqwait);
260	pthread_mutex_unlock (&reqlock);
261
262	if (nreqs > max_outstanding)
263	for (;;)
264	{
265	poll_cb ();
266
267	if (nreqs <= max_outstanding)
268	break;
269
270	poll_wait ();
271	}
272	}
273
274	static void
275	end_thread (void)
276	{
277	aio_req req;
278	Newz (0, req, 1, aio_cb);
279	req->type = REQ_QUIT;
280
281	send_req (req);
282	}
283
284	static void min_parallel (int nthreads)
285	{
286	if (wanted < nthreads)
287	wanted = nthreads;
288	}
289
290	static void max_parallel (int nthreads)
291	{
292	int cur = started;
293
294	if (wanted > nthreads)
295	wanted = nthreads;
296
297	while (cur > wanted)
298	{
299	end_thread ();
300	cur--;
301	}
302
303	while (started > wanted)
304	{
305	poll_wait ();
306	poll_cb ();
307	}
308	}
309
310	static void create_pipe ()
311	{
312	if (pipe (respipe))
313	croak ("unable to initialize result pipe");
314
315	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316	croak ("cannot set result pipe to nonblocking mode");
317
318	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319	croak ("cannot set result pipe to nonblocking mode");
320	}
321
322	static void atfork_prepare (void)
323	{
324	pthread_mutex_lock (&reqlock);
325	pthread_mutex_lock (&reslock);
326	}
327
328	static void atfork_parent (void)
329	{
330	pthread_mutex_unlock (&reslock);
331	pthread_mutex_unlock (&reqlock);
332	}	526	}
333		527
334	static void atfork_child (void)	528	static void atfork_child (void)
335	{	529	{
336	aio_req prv;
337
338	started = 0;
339
340	while (reqs)
341	{
342	prv = reqs;
343	reqs = prv->next;
344	free_req (prv);
345	}
346
347	reqs = reqe = 0;
348
349	while (ress)
350	{
351	prv = ress;
352	ress = prv->next;
353	free_req (prv);
354	}
355
356	ress = rese = 0;
357
358	close (respipe [0]);
359	close (respipe [1]);
360	create_pipe ();	530	create_respipe ();
361
362	atfork_parent ();
363	}	531	}
364		532
365	/* currently noops */	533	static SV *
366	#define LOCK_FD(fd) do { } while (0)	534	get_cb (SV *cb_sv)
367	#define UNLOCK_FD(fd) do { } while (0)	535	{
		536	HV *st;
		537	GV *gvp;
		538	CV *cv;
368		539
369	/*****************************************************************************/	540	if (!SvOK (cb_sv))
370	/* work around various missing functions */	541	return 0;
371		542
372	#if !HAVE_PREADWRITE	543	cv = sv_2cv (cb_sv, &st, &gvp, 0);
373	# define pread aio_pread
374	# define pwrite aio_pwrite
375		544
376	/*	545	if (!cv)
377	* make our pread/pwrite safe against themselves, but not against	546	croak ("IO::AIO callback must be undef or a CODE reference");
378	* normal read/write by using a mutex. slows down execution a lot,
379	* but that's your problem, not mine.
380	*/
381	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
382		547
		548	return (SV *)cv;
		549	}
		550
		551	#define dREQ \
		552	SV *cb_cv; \
		553	aio_req req; \
		554	int req_pri = next_pri; \
		555	next_pri = EIO_PRI_DEFAULT; \
		556	\
		557	cb_cv = get_cb (callback); \
		558	\
		559	Newz (0, req, 1, eio_req); \
		560	if (!req) \
		561	croak ("out of memory during eio_req allocation"); \
		562	\
		563	req->callback = SvREFCNT_inc (cb_cv); \
		564	req->pri = req_pri
		565
		566	#define REQ_SEND \
		567	PUTBACK; \
		568	req_submit (req); \
		569	SPAGAIN; \
		570	\
		571	if (GIMME_V != G_VOID) \
		572	XPUSHs (req_sv (req, AIO_REQ_KLASS));
		573
383	static ssize_t	574	static int
384	pread (int fd, void *buf, size_t count, off_t offset)	575	extract_fd (SV *fh, int wr)
385	{	576	{
386	ssize_t res;	577	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
387	off_t ooffset;
388		578
389	LOCK_FD (fd);	579	if (fd < 0)
390	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */	580	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
391	ooffset = lseek (fd, 0, SEEK_CUR);
392	lseek (fd, offset, SEEK_SET);
393	res = read (fd, buf, count);
394	lseek (fd, ooffset, SEEK_SET);
395	pthread_mutex_unlock (&iolock);
396	UNLOCK_FD (d);
397		581
398	return res;	582	return fd;
399	}	583	}
400		584
401	static ssize_t	585	MODULE = IO::AIO PACKAGE = IO::AIO
402	pwrite (int fd, void *buf, size_t count, off_t offset)
403	{
404	ssize_t res;
405	off_t ooffset;
406		586
407	LOCK_FD (fd);	587	PROTOTYPES: ENABLE
408	pthread_mutex_lock (&iolock); /* replace by LOCK_FD and private buffer */
409	ooffset = lseek (fd, 0, SEEK_CUR);
410	lseek (fd, offset, SEEK_SET);
411	res = write (fd, buf, count);
412	lseek (fd, offset, SEEK_SET);
413	pthread_mutex_unlock (&iolock);
414	UNLOCK_FD (d);
415		588
416	return res;	589	BOOT:
417	}	590	{
		591	static const struct {
		592	const char *name;
		593	IV iv;
		594	} *civ, const_iv[] = {
		595	# define const_iv(name, value) { # name, (IV) value },
		596	# define const_eio(name) { # name, (IV) EIO_ ## name },
		597	const_iv (EXDEV , EXDEV)
		598	const_iv (ENOSYS , ENOSYS)
		599	const_iv (O_RDONLY, O_RDONLY)
		600	const_iv (O_WRONLY, O_WRONLY)
		601	const_iv (O_CREAT , O_CREAT)
		602	const_iv (O_TRUNC , O_TRUNC)
		603	#ifndef _WIN32
		604	const_iv (S_IFIFO , S_IFIFO)
418	#endif	605	#endif
		606	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		607	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		608	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		609	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		610	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		611	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
419		612
420	#if !HAVE_FDATASYNC	613	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
421	# define fdatasync fsync	614	const_eio (SYNC_FILE_RANGE_WRITE)
422	#endif	615	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
423		616
424	#if !HAVE_READAHEAD	617	const_eio (READDIR_DENTS)
425	# define readahead aio_readahead	618	const_eio (READDIR_DIRS_FIRST)
		619	const_eio (READDIR_STAT_ORDER)
		620	const_eio (READDIR_FOUND_UNKNOWN)
426		621
427	static char readahead_buf[4096];	622	const_eio (DT_UNKNOWN)
428		623	const_eio (DT_FIFO)
429	static ssize_t	624	const_eio (DT_CHR)
430	readahead (int fd, off_t offset, size_t count)	625	const_eio (DT_DIR)
431	{	626	const_eio (DT_BLK)
432	while (count > 0)	627	const_eio (DT_REG)
433	{	628	const_eio (DT_LNK)
434	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	629	const_eio (DT_SOCK)
435		630	const_eio (DT_WHT)
436	pread (fd, readahead_buf, len, offset);
437	offset += len;
438	count -= len;
439	}
440
441	errno = 0;
442	}
443	#endif
444
445	/* sendfile always needs emulation */
446	static ssize_t
447	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
448	{
449	ssize_t res;
450
451	if (!count)
452	return 0;
453
454	LOCK_FD (ofd);
455
456	#if HAVE_SENDFILE
457	# if __linux
458	res = sendfile (ofd, ifd, &offset, count);
459
460	# elif __freebsd
461	/*
462	* Of course, the freebsd sendfile is a dire hack with no thoughts
463	* wasted on making it similar to other I/O functions.
464	*/
465	{
466	off_t sbytes;
467	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
468
469	if (res < 0 && sbytes)
470	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
471	res = sbytes;
472	}	631	};
473		632
474	# elif __hpux	633	stash = gv_stashpv ("IO::AIO", 1);
475	res = sendfile (ofd, ifd, offset, count, 0, 0);
476		634
477	# elif __solaris	635	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
478	{	636	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
479	struct sendfilevec vec;
480	size_t sbytes;
481		637
482	vec.sfv_fd = ifd;
483	vec.sfv_flag = 0;
484	vec.sfv_off = offset;
485	vec.sfv_len = count;
486
487	res = sendfilev (ofd, &vec, 1, &sbytes);
488
489	if (res < 0 && sbytes)
490	res = sbytes;
491	}
492
493	# else
494	res = -1;
495	errno = ENOSYS;
496	# endif
497	#endif
498
499	if (res < 0
500	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
501	#if __solaris
502	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
503	#endif
504	)
505	)
506	{
507	/* emulate sendfile. this is a major pain in the ass */
508	char *buf = malloc (4096);
509	res = 0;
510
511	for (;;)
512	{
513	ssize_t cnt;
514
515	cnt = pread (ifd, buf, 4096, offset);
516
517	if (cnt <= 0)
518	{
519	if (cnt && !res) res = -1;
520	break;
521	}
522
523	cnt = write (ofd, buf, cnt);
524
525	if (cnt <= 0)
526	{
527	if (cnt && !res) res = -1;
528	break;
529	}
530
531	offset += cnt;
532	res += cnt;
533	}
534
535	{
536	int errorno = errno;
537	free (buf);
538	errno = errorno;
539	}
540	}
541
542	UNLOCK_FD (ofd);
543
544	return res;
545	}
546
547	/*****************************************************************************/
548
549	static void *
550	aio_proc (void *thr_arg)
551	{
552	aio_req req;
553	int type;
554
555	do
556	{
557	pthread_mutex_lock (&reqlock);
558
559	for (;;)
560	{
561	req = reqs;
562
563	if (reqs)
564	{
565	reqs = reqs->next;
566	if (!reqs) reqe = 0;
567	}
568
569	if (req)
570	break;
571
572	pthread_cond_wait (&reqwait, &reqlock);
573	}
574
575	pthread_mutex_unlock (&reqlock);
576
577	errno = 0; /* strictly unnecessary */
578
579	type = req->type;
580
581	switch (type)
582	{
583	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
584	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
585
586	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
587	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
588
589	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
590	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
591	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
592
593	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
594	case REQ_CLOSE: req->result = close (req->fd); break;
595	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
596	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
597	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
598
599	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
600	case REQ_FSYNC: req->result = fsync (req->fd); break;
601
602	case REQ_QUIT:
603	break;
604
605	default:
606	req->result = ENOSYS;
607	break;
608	}
609
610	req->errorno = errno;
611
612	pthread_mutex_lock (&reslock);
613
614	req->next = 0;
615
616	if (rese)
617	{
618	rese->next = req;
619	rese = req;
620	}
621	else
622	{
623	rese = ress = req;
624
625	/* write a dummy byte to the pipe so fh becomes ready */
626	write (respipe [1], &respipe, 1);
627	}
628
629	pthread_mutex_unlock (&reslock);
630	}
631	while (type != REQ_QUIT);
632
633	return 0;
634	}
635
636	#define dREQ \
637	aio_req req; \
638	\
639	if (SvOK (callback) && !SvROK (callback)) \
640	croak ("clalback must be undef or of reference type"); \
641	\
642	Newz (0, req, 1, aio_cb); \
643	if (!req) \
644	croak ("out of memory during aio_req allocation"); \
645	\
646	req->callback = newSVsv (callback);
647
648	MODULE = IO::AIO PACKAGE = IO::AIO
649
650	PROTOTYPES: ENABLE
651
652	BOOT:
653	{
654	create_pipe ();	638	create_respipe ();
655	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
656	}
657		639
		640	if (eio_init (want_poll, done_poll) < 0)
		641	croak ("IO::AIO: unable to initialise eio library");
		642
		643	/* atfork child called in fifo order, so before eio's handler */
		644	X_THREAD_ATFORK (0, 0, atfork_child);
		645	}
		646
658	void	647	void
659	min_parallel(nthreads)	648	max_poll_reqs (int nreqs)
660	int nthreads
661	PROTOTYPE: $	649	PROTOTYPE: $
		650	CODE:
		651	eio_set_max_poll_reqs (nreqs);
662		652
663	void	653	void
664	max_parallel(nthreads)	654	max_poll_time (double nseconds)
665	int nthreads
666	PROTOTYPE: $	655	PROTOTYPE: $
667
668	int
669	max_outstanding(nreqs)
670	int nreqs
671	PROTOTYPE: $
672	CODE:	656	CODE:
673	RETVAL = max_outstanding;	657	eio_set_max_poll_time (nseconds);
		658
		659	void
		660	min_parallel (int nthreads)
		661	PROTOTYPE: $
		662	CODE:
		663	eio_set_min_parallel (nthreads);
		664
		665	void
		666	max_parallel (int nthreads)
		667	PROTOTYPE: $
		668	CODE:
		669	eio_set_max_parallel (nthreads);
		670
		671	void
		672	max_idle (int nthreads)
		673	PROTOTYPE: $
		674	CODE:
		675	eio_set_max_idle (nthreads);
		676
		677	void
		678	max_outstanding (int maxreqs)
		679	PROTOTYPE: $
		680	CODE:
674	max_outstanding = nreqs;	681	max_outstanding = maxreqs;
675		682
676	void	683	void
677	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	684	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
678	SV * pathname
679	int flags
680	int mode
681	SV * callback
682	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
683	CODE:	686	PPCODE:
684	{	687	{
685	dREQ;	688	dREQ;
686		689
687	req->type = REQ_OPEN;	690	req->type = EIO_OPEN;
688	req->data = newSVsv (pathname);	691	req->sv1 = newSVsv (pathname);
689	req->dataptr = SvPVbyte_nolen (req->data);	692	req->ptr1 = SvPVbyte_nolen (req->sv1);
690	req->fd = flags;	693	req->int1 = flags;
691	req->mode = mode;	694	req->int2 = mode;
692		695
693	send_req (req);	696	REQ_SEND;
694	}	697	}
695		698
696	void	699	void
697	aio_close(fh,callback=&PL_sv_undef)	700	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
698	SV * fh
699	SV * callback
700	PROTOTYPE: $;$	701	PROTOTYPE: $;$
701	ALIAS:	702	ALIAS:
702	aio_close = REQ_CLOSE
703	aio_fsync = REQ_FSYNC	703	aio_fsync = EIO_FSYNC
704	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = EIO_FDATASYNC
705	CODE:	705	PPCODE:
706	{	706	{
		707	int fd = extract_fd (fh, 0);
707	dREQ;	708	dREQ;
708		709
709	req->type = ix;	710	req->type = ix;
710	req->fh = newSVsv (fh);	711	req->sv1 = newSVsv (fh);
711	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	712	req->int1 = fd;
712		713
713	send_req (req);	714	REQ_SEND (req);
714	}	715	}
715		716
716	void	717	void
		718	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		719	PROTOTYPE: $$$$;$
		720	PPCODE:
		721	{
		722	int fd = extract_fd (fh, 0);
		723	dREQ;
		724
		725	req->type = EIO_SYNC_FILE_RANGE;
		726	req->sv1 = newSVsv (fh);
		727	req->int1 = fd;
		728	req->offs = offset;
		729	req->size = nbytes;
		730	req->int2 = flags;
		731
		732	REQ_SEND (req);
		733	}
		734
		735	void
		736	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		737	PROTOTYPE: $;$
		738	PPCODE:
		739	{
		740	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		741	int fd = extract_fd (fh, 0);
		742	dREQ;
		743
		744	if (close_pipe < 0)
		745	{
		746	int pipefd [2];
		747
		748	if (pipe (pipefd) < 0
		749	|| close (pipefd [1]) < 0
		750	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		751	abort (); /*D*/
		752
		753	close_pipe = pipefd [0];
		754	}
		755
		756	req->type = EIO_DUP2;
		757	req->int1 = close_pipe;
		758	req->sv2 = newSVsv (fh);
		759	req->int2 = fd;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
717	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	765	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
718	SV * fh
719	UV offset
720	UV length
721	SV * data
722	UV dataoffset
723	SV * callback
724	ALIAS:	766	ALIAS:
725	aio_read = REQ_READ	767	aio_read = EIO_READ
726	aio_write = REQ_WRITE	768	aio_write = EIO_WRITE
727	PROTOTYPE: $$$$$;$	769	PROTOTYPE: $$$$$;$
728	CODE:	770	PPCODE:
729	{	771	{
730	aio_req req;
731	STRLEN svlen;	772	STRLEN svlen;
		773	int fd = extract_fd (fh, ix == EIO_WRITE);
732	char *svptr = SvPVbyte (data, svlen);	774	char *svptr = SvPVbyte (data, svlen);
733		775	UV len = SvUV (length);
734	SvUPGRADE (data, SVt_PV);
735	SvPOK_on (data);
736		776
737	if (dataoffset < 0)	777	if (dataoffset < 0)
738	dataoffset += svlen;	778	dataoffset += svlen;
739		779
740	if (dataoffset < 0 || dataoffset > svlen)	780	if (dataoffset < 0 || dataoffset > svlen)
741	croak ("data offset outside of string");	781	croak ("dataoffset outside of data scalar");
742		782
743	if (ix == REQ_WRITE)	783	if (ix == EIO_WRITE)
744	{	784	{
745	/* write: check length and adjust. */	785	/* write: check length and adjust. */
746	if (length < 0 || length + dataoffset > svlen)	786	if (!SvOK (length) || len + dataoffset > svlen)
747	length = svlen - dataoffset;	787	len = svlen - dataoffset;
748	}	788	}
749	else	789	else
750	{	790	{
751	/* read: grow scalar as necessary */	791	/* read: check type and grow scalar as necessary */
		792	SvUPGRADE (data, SVt_PV);
752	svptr = SvGROW (data, length + dataoffset);	793	svptr = SvGROW (data, len + dataoffset + 1);
753	}	794	}
754
755	if (length < 0)
756	croak ("length must not be negative");
757		795
758	{	796	{
759	dREQ;	797	dREQ;
760		798
761	req->type = ix;	799	req->type = ix;
762	req->fh = newSVsv (fh);	800	req->sv1 = newSVsv (fh);
763	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	801	req->int1 = fd;
764	: IoOFP (sv_2io (fh)));	802	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
765	req->offset = offset;	803	req->size = len;
766	req->length = length;
767	req->data = SvREFCNT_inc (data);	804	req->sv2 = SvREFCNT_inc (data);
768	req->dataptr = (char *)svptr + dataoffset;	805	req->ptr2 = (char *)svptr + dataoffset;
		806	req->stroffset = dataoffset;
769		807
770	if (!SvREADONLY (data))	808	if (!SvREADONLY (data))
771	{	809	{
772	SvREADONLY_on (data);	810	SvREADONLY_on (data);
773	req->data2ptr = (void *)data;	811	req->flags |= FLAG_SV2_RO_OFF;
774	}	812	}
775		813
776	send_req (req);	814	REQ_SEND;
777	}	815	}
778	}	816	}
779		817
780	void	818	void
		819	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		820	PROTOTYPE: $$;$
		821	PPCODE:
		822	{
		823	SV *data;
		824	dREQ;
		825
		826	req->type = EIO_READLINK;
		827	req->sv1 = newSVsv (path);
		828	req->ptr1 = SvPVbyte_nolen (req->sv1);
		829
		830	REQ_SEND;
		831	}
		832
		833	void
781	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	834	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
782	SV * out_fh
783	SV * in_fh
784	UV in_offset
785	UV length
786	SV * callback
787	PROTOTYPE: $$$$;$	835	PROTOTYPE: $$$$;$
788	CODE:	836	PPCODE:
789	{	837	{
		838	int ifd = extract_fd (in_fh , 0);
		839	int ofd = extract_fd (out_fh, 0);
790	dREQ;	840	dREQ;
791		841
792	req->type = REQ_SENDFILE;	842	req->type = EIO_SENDFILE;
793	req->fh = newSVsv (out_fh);	843	req->sv1 = newSVsv (out_fh);
794	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	844	req->int1 = ofd;
795	req->fh2 = newSVsv (in_fh);	845	req->sv2 = newSVsv (in_fh);
796	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	846	req->int2 = ifd;
797	req->offset = in_offset;	847	req->offs = in_offset;
798	req->length = length;	848	req->size = length;
799		849
800	send_req (req);	850	REQ_SEND;
801	}	851	}
802		852
803	void	853	void
804	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	854	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
805	SV * fh
806	UV offset
807	IV length
808	SV * callback
809	PROTOTYPE: $$$;$	855	PROTOTYPE: $$$;$
810	CODE:	856	PPCODE:
811	{	857	{
		858	int fd = extract_fd (fh, 0);
812	dREQ;	859	dREQ;
813		860
814	req->type = REQ_READAHEAD;	861	req->type = EIO_READAHEAD;
815	req->fh = newSVsv (fh);	862	req->sv1 = newSVsv (fh);
816	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	863	req->int1 = fd;
817	req->offset = offset;	864	req->offs = offset;
818	req->length = length;	865	req->size = length;
819		866
820	send_req (req);	867	REQ_SEND;
821	}	868	}
822		869
823	void	870	void
824	aio_stat(fh_or_path,callback=&PL_sv_undef)	871	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
825	SV * fh_or_path
826	SV * callback
827	ALIAS:	872	ALIAS:
828	aio_stat = REQ_STAT	873	aio_stat = EIO_STAT
829	aio_lstat = REQ_LSTAT	874	aio_lstat = EIO_LSTAT
830	CODE:	875	PPCODE:
831	{	876	{
832	dREQ;	877	dREQ;
833		878
834	New (0, req->statdata, 1, Stat_t);	879	req->sv1 = newSVsv (fh_or_path);
835	if (!req->statdata)
836	{
837	free_req (req);
838	croak ("out of memory during aio_req->statdata allocation");
839	}
840		880
841	if (SvPOK (fh_or_path))	881	if (SvPOK (req->sv1))
842	{	882	{
843	req->type = ix;	883	req->type = ix;
844	req->data = newSVsv (fh_or_path);
845	req->dataptr = SvPVbyte_nolen (req->data);	884	req->ptr1 = SvPVbyte_nolen (req->sv1);
846	}	885	}
847	else	886	else
848	{	887	{
849	req->type = REQ_FSTAT;	888	req->type = EIO_FSTAT;
850	req->fh = newSVsv (fh_or_path);
851	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		890	}
		891
		892	REQ_SEND;
		893	}
		894
		895	void
		896	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		897	PPCODE:
		898	{
		899	dREQ;
		900
		901	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		902	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		903	req->sv1 = newSVsv (fh_or_path);
		904
		905	if (SvPOK (req->sv1))
852	}	906	{
		907	req->type = EIO_UTIME;
		908	req->ptr1 = SvPVbyte_nolen (req->sv1);
		909	}
		910	else
		911	{
		912	req->type = EIO_FUTIME;
		913	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		914	}
853		915
854	send_req (req);	916	REQ_SEND;
855	}	917	}
856		918
857	void	919	void
		920	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		921	PPCODE:
		922	{
		923	dREQ;
		924
		925	req->sv1 = newSVsv (fh_or_path);
		926	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		927
		928	if (SvPOK (req->sv1))
		929	{
		930	req->type = EIO_TRUNCATE;
		931	req->ptr1 = SvPVbyte_nolen (req->sv1);
		932	}
		933	else
		934	{
		935	req->type = EIO_FTRUNCATE;
		936	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		937	}
		938
		939	REQ_SEND;
		940	}
		941
		942	void
		943	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		944	ALIAS:
		945	aio_chmod = EIO_CHMOD
		946	aio_mkdir = EIO_MKDIR
		947	PPCODE:
		948	{
		949	dREQ;
		950
		951	req->int2 = mode;
		952	req->sv1 = newSVsv (fh_or_path);
		953
		954	if (SvPOK (req->sv1))
		955	{
		956	req->type = ix;
		957	req->ptr1 = SvPVbyte_nolen (req->sv1);
		958	}
		959	else
		960	{
		961	req->type = EIO_FCHMOD;
		962	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		963	}
		964
		965	REQ_SEND;
		966	}
		967
		968	void
		969	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		970	PPCODE:
		971	{
		972	dREQ;
		973
		974	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		975	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		976	req->sv1 = newSVsv (fh_or_path);
		977
		978	if (SvPOK (req->sv1))
		979	{
		980	req->type = EIO_CHOWN;
		981	req->ptr1 = SvPVbyte_nolen (req->sv1);
		982	}
		983	else
		984	{
		985	req->type = EIO_FCHOWN;
		986	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		987	}
		988
		989	REQ_SEND;
		990	}
		991
		992	void
		993	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		994	PPCODE:
		995	{
		996	dREQ;
		997
		998	req->type = EIO_READDIR;
		999	req->sv1 = newSVsv (pathname);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1002
		1003	if (flags & EIO_READDIR_DENTS)
		1004	req->int1 |= EIO_READDIR_CUSTOM2;
		1005
		1006	REQ_SEND;
		1007	}
		1008
		1009	void
858	aio_unlink(pathname,callback=&PL_sv_undef)	1010	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
859	SV * pathname
860	SV * callback
861	ALIAS:	1011	ALIAS:
862	aio_unlink = REQ_UNLINK	1012	aio_unlink = EIO_UNLINK
863	aio_rmdir = REQ_RMDIR	1013	aio_rmdir = EIO_RMDIR
		1014	aio_readdir = EIO_READDIR
864	CODE:	1015	PPCODE:
865	{	1016	{
866	dREQ;	1017	dREQ;
867		1018
868	req->type = ix;	1019	req->type = ix;
869	req->data = newSVsv (pathname);	1020	req->sv1 = newSVsv (pathname);
870	req->dataptr = SvPVbyte_nolen (req->data);	1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
871
872	send_req (req);
873	}
874		1022
		1023	REQ_SEND;
		1024	}
		1025
875	void	1026	void
876	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1027	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
877	SV * oldpath	1028	ALIAS:
878	SV * newpath	1029	aio_link = EIO_LINK
879	SV * callback	1030	aio_symlink = EIO_SYMLINK
		1031	aio_rename = EIO_RENAME
880	CODE:	1032	PPCODE:
881	{	1033	{
882	dREQ;	1034	dREQ;
883		1035
884	req->type = REQ_SYMLINK;	1036	req->type = ix;
885	req->fh = newSVsv (oldpath);	1037	req->sv1 = newSVsv (oldpath);
886	req->data2ptr = SvPVbyte_nolen (req->fh);	1038	req->ptr1 = SvPVbyte_nolen (req->sv1);
887	req->data = newSVsv (newpath);	1039	req->sv2 = newSVsv (newpath);
888	req->dataptr = SvPVbyte_nolen (req->data);	1040	req->ptr2 = SvPVbyte_nolen (req->sv2);
889		1041
890	send_req (req);	1042	REQ_SEND;
891	}	1043	}
892		1044
893	void	1045	void
		1046	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		1047	PPCODE:
		1048	{
		1049	dREQ;
		1050
		1051	req->type = EIO_MKNOD;
		1052	req->sv1 = newSVsv (pathname);
		1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1054	req->int2 = (mode_t)mode;
		1055	req->offs = dev;
		1056
		1057	REQ_SEND;
		1058	}
		1059
		1060	void
		1061	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1062	PPCODE:
		1063	{
		1064	dREQ;
		1065
		1066	req->type = EIO_BUSY;
		1067	req->nv1 = delay < 0. ? 0. : delay;
		1068
		1069	REQ_SEND;
		1070	}
		1071
		1072	void
		1073	aio_group (SV *callback=&PL_sv_undef)
		1074	PROTOTYPE: ;$
		1075	PPCODE:
		1076	{
		1077	dREQ;
		1078
		1079	req->type = EIO_GROUP;
		1080
		1081	req_submit (req);
		1082	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1083	}
		1084
		1085	void
		1086	aio_nop (SV *callback=&PL_sv_undef)
		1087	ALIAS:
		1088	aio_nop = EIO_NOP
		1089	aio_sync = EIO_SYNC
		1090	PPCODE:
		1091	{
		1092	dREQ;
		1093
		1094	req->type = ix;
		1095
		1096	REQ_SEND;
		1097	}
		1098
		1099	int
		1100	aioreq_pri (int pri = 0)
		1101	PROTOTYPE: ;$
		1102	CODE:
		1103	RETVAL = next_pri;
		1104	if (items > 0)
		1105	{
		1106	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1107	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1108	next_pri = pri;
		1109	}
		1110	OUTPUT:
		1111	RETVAL
		1112
		1113	void
		1114	aioreq_nice (int nice = 0)
		1115	CODE:
		1116	nice = next_pri - nice;
		1117	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1118	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1119	next_pri = nice;
		1120
		1121	void
894	flush()	1122	flush ()
895	PROTOTYPE:	1123	PROTOTYPE:
896	CODE:	1124	CODE:
897	while (nreqs)	1125	while (eio_nreqs ())
898	{	1126	{
899	poll_wait ();	1127	poll_wait ();
900	poll_cb ();	1128	poll_cb ();
901	}	1129	}
902		1130
903	void	1131	int
904	poll()	1132	poll()
905	PROTOTYPE:	1133	PROTOTYPE:
906	CODE:	1134	CODE:
907	if (nreqs)
908	{
909	poll_wait ();	1135	poll_wait ();
910	poll_cb ();	1136	RETVAL = poll_cb ();
911	}	1137	OUTPUT:
		1138	RETVAL
912		1139
913	int	1140	int
914	poll_fileno()	1141	poll_fileno()
915	PROTOTYPE:	1142	PROTOTYPE:
916	CODE:	1143	CODE:
…		…
928		1155
929	void	1156	void
930	poll_wait()	1157	poll_wait()
931	PROTOTYPE:	1158	PROTOTYPE:
932	CODE:	1159	CODE:
933	if (nreqs)
934	poll_wait ();	1160	poll_wait ();
935		1161
936	int	1162	int
937	nreqs()	1163	nreqs()
938	PROTOTYPE:	1164	PROTOTYPE:
939	CODE:	1165	CODE:
940	RETVAL = nreqs;	1166	RETVAL = eio_nreqs ();
941	OUTPUT:	1167	OUTPUT:
942	RETVAL	1168	RETVAL
943		1169
		1170	int
		1171	nready()
		1172	PROTOTYPE:
		1173	CODE:
		1174	RETVAL = eio_nready ();
		1175	OUTPUT:
		1176	RETVAL
		1177
		1178	int
		1179	npending()
		1180	PROTOTYPE:
		1181	CODE:
		1182	RETVAL = eio_npending ();
		1183	OUTPUT:
		1184	RETVAL
		1185
		1186	int
		1187	nthreads()
		1188	PROTOTYPE:
		1189	CODE:
		1190	RETVAL = eio_nthreads ();
		1191	OUTPUT:
		1192	RETVAL
		1193
		1194	int
		1195	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1196	PROTOTYPE: $$$$
		1197	CODE:
		1198	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1199	RETVAL = posix_fadvise (fh, offset, length, advice);
		1200	#else
		1201	RETVAL = errno = ENOSYS;
		1202	#endif
		1203	OUTPUT:
		1204	RETVAL
		1205
		1206	ssize_t
		1207	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1208	PROTOTYPE: $$$$
		1209	CODE:
		1210	eio_sendfile_sync (ofh, ifh, offset, count);
		1211
		1212	void _on_next_submit (SV *cb)
		1213	CODE:
		1214	SvREFCNT_dec (on_next_submit);
		1215	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1216
		1217	PROTOTYPES: DISABLE
		1218
		1219	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1220
		1221	void
		1222	cancel (aio_req_ornot req)
		1223	CODE:
		1224	eio_cancel (req);
		1225
		1226	void
		1227	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1228	PPCODE:
		1229	{
		1230	if (GIMME_V != G_VOID)
		1231	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1232
		1233	if (items > 1)
		1234	{
		1235	SV *cb_cv = get_cb (callback);
		1236
		1237	SvREFCNT_dec (req->callback);
		1238	req->callback = SvREFCNT_inc (cb_cv);
		1239	}
		1240	}
		1241
		1242	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1243
		1244	void
		1245	add (aio_req grp, ...)
		1246	PPCODE:
		1247	{
		1248	int i;
		1249
		1250	if (grp->int1 == 2)
		1251	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1252
		1253	for (i = 1; i < items; ++i )
		1254	{
		1255	aio_req req;
		1256
		1257	if (GIMME_V != G_VOID)
		1258	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1259
		1260	req = SvAIO_REQ (ST (i));
		1261
		1262	if (req)
		1263	eio_grp_add (grp, req);
		1264	}
		1265	}
		1266
		1267	void
		1268	cancel_subs (aio_req_ornot req)
		1269	CODE:
		1270	req_cancel_subs (req);
		1271
		1272	void
		1273	result (aio_req grp, ...)
		1274	CODE:
		1275	{
		1276	int i;
		1277	AV *av;
		1278
		1279	grp->errorno = errno;
		1280
		1281	av = newAV ();
		1282	av_extend (av, items - 1);
		1283
		1284	for (i = 1; i < items; ++i )
		1285	av_push (av, newSVsv (ST (i)));
		1286
		1287	SvREFCNT_dec (grp->sv1);
		1288	grp->sv1 = (SV *)av;
		1289	}
		1290
		1291	void
		1292	errno (aio_req grp, int errorno = errno)
		1293	CODE:
		1294	grp->errorno = errorno;
		1295
		1296	void
		1297	limit (aio_req grp, int limit)
		1298	CODE:
		1299	eio_grp_limit (grp, limit);
		1300
		1301	void
		1302	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1303	CODE:
		1304	{
		1305	SvREFCNT_dec (grp->sv2);
		1306	grp->sv2 = newSVsv (callback);
		1307	grp->feed = aio_grp_feed;
		1308
		1309	if (grp->int2 <= 0)
		1310	grp->int2 = 2;
		1311
		1312	eio_grp_limit (grp, grp->int2);
		1313	}
		1314

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