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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.72 by root, Tue Oct 24 17:22:17 2006 UTC vs.
Revision 1.207 by root, Fri Dec 30 07:40:54 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>	21	# include <sys/mman.h>
38	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
39	# include <sys/socket.h>	69	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		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	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
42	# else	295	# else
43	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	297	# endif
45	#endif	298	#endif
46		299	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	301	#endif
51		302	#ifndef MAP_LOCKED
52	#if __ia64	303	# define MAP_LOCKED 0
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif	304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
59		314
60	/* buffer size for various temporary buffers */	315	#ifndef makedev
61	#define AIO_BUFSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
		317	#endif
		318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
62		324
63	#define dBUF \	325	#ifndef PAGESIZE
64	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	LOCK (wrklock); \	327	#endif
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		328
71	enum {	329	enum {
72	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
73	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	331	};
84		332
85	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;
93	SV *fh, *fh2;
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;
101	int type;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01,
115	};
116
117	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
119		336
120	enum {	337	static SV *on_next_submit;
121	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,
123
124	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;	339	static int max_outstanding;
134	static int respipe [2];
135		340
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	341	static s_epipe respipe;
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141		342
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{
166	closedir (wrk->dirp);
167	wrk->dirp = 0;
168	}
169
170	if (wrk->dbuf)
171	{
172	free (wrk->dbuf);
173	wrk->dbuf = 0;
174	}
175	}
176
177	static void worker_free (worker *wrk)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;
224
225	--q->size;
226
227	for (pri = NUM_PRI; pri--; )
228	{
229	aio_req req = q->qs[pri];
230
231	if (req)
232	{
233	if (!(q->qs[pri] = req->next))
234	q->qe[pri] = 0;
235
236	return req;
237	}
238	}
239
240	abort ();
241	}
242
243	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	343	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
246		345
		346	static void
		347	want_poll (void)
		348	{
		349	/* write a dummy byte to the pipe so fh becomes ready */
		350	s_epipe_signal (&respipe);
		351	}
		352
		353	static void
		354	done_poll (void)
		355	{
		356	/* read any signals sent by the worker threads */
		357	s_epipe_drain (&respipe);
		358	}
		359
247	/* must be called at most once */	360	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	361	static SV *
		362	req_sv (aio_req req, HV *stash)
249	{	363	{
250	if (!req->self)	364	if (!req->self)
251	{	365	{
252	req->self = (SV *)newHV ();	366	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	367	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	368	}
255		369
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	370	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	371	}
258		372
259	static aio_req SvAIO_REQ (SV *sv)	373	static SV *
		374	newSVaio_wd (aio_wd wd)
		375	{
		376	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		377	}
		378
		379	static aio_req
		380	SvAIO_REQ (SV *sv)
260	{	381	{
261	MAGIC *mg;	382	MAGIC *mg;
262		383
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	384	if (!SvROK (sv)
		385	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		386	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		387	&& SvSTASH (SvRV (sv)) != aio_req_stash
		388	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	389	croak ("object of class IO::AIO::REQ expected");
265		390
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	391	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		392
268	return mg ? (aio_req)mg->mg_ptr : 0;	393	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	394	}
270		395
		396	static aio_wd
		397	SvAIO_WD (SV *sv)
		398	{
		399	if (!SvROK (sv)
		400	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		401	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		402	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		403
		404	return (aio_wd)(long)SvIVX (SvRV (sv));
		405	}
		406
		407	static void
271	static void aio_grp_feed (aio_req grp)	408	aio_grp_feed (aio_req grp)
272	{	409	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	410	if (grp->sv2 && SvOK (grp->sv2))
274	{	411	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	412	dSP;
280		413
281	ENTER;	414	ENTER;
282	SAVETMPS;	415	SAVETMPS;
283	PUSHMARK (SP);	416	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	417	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	418	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	419	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	420	SPAGAIN;
288	FREETMPS;	421	FREETMPS;
289	LEAVE;	422	LEAVE;
290	}
291
292	/* stop if no progress has been made */
293	if (old_len == grp->length)
294	{
295	SvREFCNT_dec (grp->fh2);
296	grp->fh2 = 0;
297	break;
298	}
299	}	423	}
300	}	424	}
301		425
302	static void aio_grp_dec (aio_req grp)	426	static void
		427	req_submit (eio_req *req)
303	{	428	{
304	--grp->length;	429	eio_submit (req);
305		430
306	/* call feeder, if applicable */	431	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	432	{
312	req_invoke (grp);	433	dSP;
313	req_free (grp);	434	SV *cb = sv_2mortal (on_next_submit);
		435
		436	on_next_submit = 0;
		437
		438	PUSHMARK (SP);
		439	PUTBACK;
		440	call_sv (cb, G_DISCARD | G_EVAL);
314	}	441	}
315	}	442	}
316		443
317	static void poll_wait ()	444	static int
		445	req_invoke (eio_req *req)
318	{	446	{
319	fd_set rfd;	447	if (req->flags & FLAG_SV2_RO_OFF)
		448	SvREADONLY_off (req->sv2);
320		449
321	while (nreqs)	450	if (!EIO_CANCELLED (req) && req->callback)
322	{	451	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)
343	{
344	dSP;	452	dSP;
345		453	static SV *sv_result_cache; /* caches the result integer SV */
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	454	SV *sv_result;
347	{
348	errno = req->errorno;
349		455
350	ENTER;	456	ENTER;
351	SAVETMPS;	457	SAVETMPS;
352	PUSHMARK (SP);	458	PUSHMARK (SP);
353	EXTEND (SP, 1);	459	EXTEND (SP, 1);
354		460
		461	/* do not recreate the result IV from scratch each time */
		462	if (expect_true (sv_result_cache))
		463	{
		464	sv_result = sv_result_cache; sv_result_cache = 0;
		465	SvIV_set (sv_result, req->result);
		466	SvIOK_only (sv_result);
		467	}
		468	else
		469	{
		470	sv_result = newSViv (req->result);
		471	SvREADONLY_on (sv_result);
		472	}
		473
355	switch (req->type)	474	switch (req->type)
356	{	475	{
		476	case EIO_WD_OPEN:
		477	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		478	break;
		479
357	case REQ_READDIR:	480	case EIO_READDIR:
358	{	481	{
359	SV *rv = &PL_sv_undef;	482	SV *rv = &PL_sv_undef;
360		483
361	if (req->result >= 0)	484	if (req->result >= 0)
362	{	485	{
363	int i;	486	int i;
364	char *buf = req->data2ptr;	487	char *names = (char *)req->ptr2;
		488	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	489	AV *av = newAV ();
366		490
367	av_extend (av, req->result - 1);	491	av_extend (av, req->result - 1);
368		492
369	for (i = 0; i < req->result; ++i)	493	for (i = 0; i < req->result; ++i)
370	{	494	{
371	SV *sv = newSVpv (buf, 0);	495	if (req->int1 & EIO_READDIR_DENTS)
		496	{
		497	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		498
		499	if (req->int1 & EIO_READDIR_CUSTOM2)
		500	{
		501	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		502	AV *avent = newAV ();
		503
		504	av_extend (avent, 2);
		505
		506	if (!sv_type [ent->type])
		507	{
		508	sv_type [ent->type] = newSViv (ent->type);
		509	SvREADONLY_on (sv_type [ent->type]);
		510	}
		511
		512	av_store (avent, 0, namesv);
		513	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		514	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		515
		516	av_store (av, i, newRV_noinc ((SV *)avent));
		517	}
		518	else
373	av_store (av, i, sv);	519	av_store (av, i, namesv);
		520
		521	++ent;
		522	}
		523	else
		524	{
		525	SV *name = newSVpv (names, 0);
		526	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	527	names += SvCUR (name) + 1;
		528	}
375	}	529	}
376		530
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	531	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	532	}
379		533
380	PUSHs (rv);	534	PUSHs (rv);
		535
		536	if (req->int1 & EIO_READDIR_CUSTOM1)
		537	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	538	}
382	break;	539	break;
383		540
384	case REQ_OPEN:	541	case EIO_OPEN:
385	{	542	{
386	/* convert fd to fh */	543	/* convert fd to fh */
387	SV *fh;	544	SV *fh = &PL_sv_undef;
388		545
389	PUSHs (sv_2mortal (newSViv (req->result)));	546	if (req->result >= 0)
390	PUTBACK;	547	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	548	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	549	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		550	char sym [64];
		551	int symlen;
		552
		553	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		554	gv_init (gv, aio_stash, sym, symlen, 0);
393		555
394	fh = SvREFCNT_inc (POPs);	556	symlen = snprintf (
		557	sym,
		558	sizeof (sym),
		559	"%s&=%d",
		560	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		561	(int)req->result
		562	);
395		563
		564	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		565	fh = (SV *)gv;
		566	}
		567
396	PUSHMARK (SP);	568	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	569	}
399	break;	570	break;
400		571
		572	case EIO_STATVFS:
		573	case EIO_FSTATVFS:
		574	{
		575	SV *rv = &PL_sv_undef;
		576
		577	#ifndef _WIN32
		578	if (req->result >= 0)
		579	{
		580	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		581	HV *hv = newHV ();
		582
		583	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		584
		585	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		586	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		587	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		588	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		589	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		590	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		591	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		592	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		593	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		594	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		595	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		596	}
		597	#endif
		598
		599	PUSHs (rv);
		600	}
		601
		602	break;
		603
401	case REQ_GROUP:	604	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	605	req->int1 = 2; /* mark group as finished */
403		606
404	if (req->data)	607	if (req->sv1)
405	{	608	{
406	int i;	609	int i;
407	AV *av = (AV *)req->data;	610	AV *av = (AV *)req->sv1;
408		611
409	EXTEND (SP, AvFILL (av) + 1);	612	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	613	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	614	PUSHs (*av_fetch (av, i, 0));
412	}	615	}
413	break;	616	break;
414		617
415	case REQ_NOP:	618	case EIO_NOP:
416	case REQ_BUSY:	619	case EIO_BUSY:
417	break;	620	break;
418		621
		622	case EIO_READLINK:
		623	case EIO_REALPATH:
		624	if (req->result > 0)
		625	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		626	break;
		627
		628	case EIO_STAT:
		629	case EIO_LSTAT:
		630	case EIO_FSTAT:
		631	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		632
		633	if (!(PL_laststatval = req->result))
		634	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		635	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		636
		637	PUSHs (sv_result);
		638	break;
		639
		640	case EIO_READ:
		641	{
		642	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		643	*SvEND (req->sv2) = 0;
		644	SvPOK_only (req->sv2);
		645	SvSETMAGIC (req->sv2);
		646	PUSHs (sv_result);
		647	}
		648	break;
		649
		650	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		651	if (req->result > 0)
		652	SvIV_set (sv_result, 0);
		653	/* FALLTHROUGH */
		654
419	default:	655	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	656	PUSHs (sv_result);
421	break;	657	break;
422	}	658	}
423		659
		660	errno = req->errorno;
424		661
425	PUTBACK;	662	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	663	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	664	SPAGAIN;
		665
		666	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		667	SvREFCNT_dec (sv_result);
		668	else
		669	sv_result_cache = sv_result;
428		670
429	FREETMPS;	671	FREETMPS;
430	LEAVE;	672	LEAVE;
		673
		674	PUTBACK;
431	}	675	}
432		676
433	if (req->grp)	677	return !!SvTRUE (ERRSV);
434	{
435	aio_req grp = req->grp;
436
437	/* unlink request */
438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441	if (grp->grp_first == req)
442	grp->grp_first = req->grp_next;
443
444	aio_grp_dec (grp);
445	}
446
447	if (SvTRUE (ERRSV))
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	678	}
453		679
454	static void req_free (aio_req req)	680	static void
		681	req_destroy (aio_req req)
455	{	682	{
456	if (req->self)	683	if (req->self)
457	{	684	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	685	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	686	SvREFCNT_dec (req->self);
460	}	687	}
461		688
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	689	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	690	SvREFCNT_dec (req->sv2);
		691	SvREFCNT_dec (req->sv3);
		692	SvREFCNT_dec (req->sv4);
465	SvREFCNT_dec (req->callback);	693	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467		694
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470
471	Safefree (req);	695	free (req);
472	}	696	}
473		697
		698	static void
474	static void req_cancel_subs (aio_req grp)	699	req_cancel_subs (aio_req grp)
475	{	700	{
476	aio_req sub;
477
478	if (grp->type != REQ_GROUP)	701	if (grp->type != EIO_GROUP)
479	return;	702	return;
480		703
481	SvREFCNT_dec (grp->fh2);	704	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	705	grp->sv2 = 0;
483		706
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	707	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	708	}
487		709
488	static void req_cancel (aio_req req)	710	static void ecb_cold
		711	create_respipe (void)
489	{	712	{
490	req->flags |= FLAG_CANCELLED;	713	if (s_epipe_renew (&respipe))
491		714	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	715	}
494		716
495	static int poll_cb ()	717	static void
		718	poll_wait (void)
496	{	719	{
497	dSP;	720	while (eio_nreqs ())
498	int count = 0;	721	{
499	int do_croak = 0;	722	int size;
500	aio_req req;
501		723
		724	X_LOCK (reslock);
		725	size = res_queue.size;
		726	X_UNLOCK (reslock);
		727
		728	if (size)
		729	return;
		730
		731	etp_maybe_start_thread ();
		732
		733	s_epipe_wait (&respipe);
		734	}
		735	}
		736
		737	static int
		738	poll_cb (void)
		739	{
502	for (;;)	740	for (;;)
503	{	741	{
504	LOCK (reslock);	742	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		743
507	if (req)	744	if (res > 0)
		745	croak (0);
		746
		747	if (!max_outstanding || max_outstanding > eio_nreqs ())
		748	return res;
		749
		750	poll_wait ();
		751	}
		752	}
		753
		754	static void ecb_cold
		755	reinit (void)
		756	{
		757	create_respipe ();
		758
		759	if (eio_init (want_poll, done_poll) < 0)
		760	croak ("IO::AIO: unable to initialise eio library");
		761	}
		762
		763	/*****************************************************************************/
		764
		765	#if !_POSIX_MAPPED_FILES
		766	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		767	# define munmap(addr,length) (errno = ENOSYS, -1)
		768	#endif
		769
		770	#if !_POSIX_MEMORY_PROTECTION
		771	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		772	# define PROT_NONE 0
		773	# define PROT_WRITE 0
		774	# define MAP_PRIVATE 0
		775	# define MAP_SHARED 0
		776	# define MAP_FIXED 0
		777	#endif
		778
		779	#define MMAP_MAGIC PERL_MAGIC_ext
		780
		781	static int ecb_cold
		782	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		783	{
		784	int old_errno = errno;
		785	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		786	errno = old_errno;
		787
		788	mg->mg_obj = 0; /* just in case */
		789
		790	SvREADONLY_off (sv);
		791
		792	if (SvPVX (sv) != mg->mg_ptr)
		793	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		794
		795	SvCUR_set (sv, 0);
		796	SvPVX (sv) = 0;
		797	SvOK_off (sv);
		798
		799	return 0;
		800	}
		801
		802	static MGVTBL mmap_vtbl = {
		803	0, 0, 0, 0, mmap_free
		804	};
		805
		806	/*****************************************************************************/
		807
		808	static SV *
		809	get_cb (SV *cb_sv)
		810	{
		811	SvGETMAGIC (cb_sv);
		812	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		813	}
		814
		815	static aio_req ecb_noinline
		816	dreq (SV *callback)
		817	{
		818	SV *cb_cv;
		819	aio_req req;
		820	int req_pri = next_pri;
		821	next_pri = EIO_PRI_DEFAULT;
		822
		823	cb_cv = get_cb (callback);
		824
		825	req = calloc (sizeof (*req), 1);
		826	if (!req)
		827	croak ("out of memory during eio_req allocation");
		828
		829	req->callback = SvREFCNT_inc (cb_cv);
		830	req->pri = req_pri;
		831
		832	return req;
		833	}
		834
		835	#define dREQ \
		836	aio_req req = dreq (callback); \
		837
		838	#define REQ_SEND \
		839	PUTBACK; \
		840	req_submit (req); \
		841	SPAGAIN; \
		842	\
		843	if (GIMME_V != G_VOID) \
		844	XPUSHs (req_sv (req, aio_req_stash));
		845
		846	ecb_inline void
		847	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		848	{
		849	if (expect_false (SvROK (path)))
		850	{
		851	SV *rv = SvRV (path);
		852	SV *wdob;
		853
		854	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
508	{	855	{
509	if (!res_queue.size)	856	path = AvARRAY (rv)[1];
		857	wdob = AvARRAY (rv)[0];
		858
		859	if (SvOK (wdob))
510	{	860	{
511	/* read any signals sent by the worker threads */	861	*wd = SvAIO_WD (wdob);
512	char buf [32];	862	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}	863	}
		864	else
		865	*wd = EIO_INVALID_WD;
516	}	866	}
517		867	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
518	UNLOCK (reslock);
519
520	if (!req)
521	break;
522
523	--nreqs;
524
525	if (req->type == REQ_QUIT)
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{	868	{
529	req->fd = 1; /* mark request as delayed */	869	*wd = (aio_wd)(long)SvIVX (rv);
530	continue;	870	*wdsv = SvREFCNT_inc_NN (rv);
		871	*ptr = ".";
		872	return; /* path set to "." */
531	}	873	}
532	else	874	else
533	{	875	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	876	}
554		877
555	return count;	878	*pathsv = newSVsv (path);
		879	*ptr = SvPVbyte_nolen (*pathsv);
556	}	880	}
557		881
558	static void *aio_proc(void *arg);	882	static void ecb_noinline
559		883	req_set_path1 (aio_req req, SV *path)
560	static void start_thread (void)
561	{	884	{
562	worker *wrk = calloc (1, sizeof (worker));	885	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		886	}
563		887
564	if (!wrk)	888	static void ecb_noinline
565	croak ("unable to allocate worker thread data");	889	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		890	{
		891	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
566		892
567	sigset_t fullsigset, oldsigset;	893	switch (SvTYPE (rv))
568	pthread_attr_t attr;
569
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580	{	894	{
581	wrk->prev = &wrk_first;	895	case SVt_PVIO:
582	wrk->next = wrk_first.next;	896	case SVt_PVLV:
583	wrk_first.next->prev = wrk;	897	case SVt_PVGV:
584	wrk_first.next = wrk;	898	req->type = type_fh;
585	started++;	899	req->sv1 = newSVsv (fh_or_path);
		900	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		901	break;
		902
		903	default:
		904	req->type = type_path;
		905	req_set_path1 (req, fh_or_path);
		906	break;
586	}	907	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}	908	}
593		909
594	static void req_send (aio_req req)	910	XS(boot_IO__AIO) ecb_cold;
595	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598		911
599	++nreqs;	912	MODULE = IO::AIO PACKAGE = IO::AIO
600		913
601	LOCK (reqlock);	914	PROTOTYPES: ENABLE
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605		915
606	if (nreqs > max_outstanding)	916	BOOT:
607	for (;;)
608	{
609	poll_cb ();
610
611	if (nreqs <= max_outstanding)
612	break;
613
614	poll_wait ();
615	}
616	}
617
618	static void end_thread (void)
619	{	917	{
620	aio_req req;	918	static const struct {
		919	const char *name;
		920	IV iv;
		921	} *civ, const_iv[] = {
		922	# define const_niv(name, value) { # name, (IV) value },
		923	# define const_iv(name) { # name, (IV) name },
		924	# define const_eio(name) { # name, (IV) EIO_ ## name },
		925	const_iv (EXDEV)
		926	const_iv (ENOSYS)
		927	const_iv (O_RDONLY)
		928	const_iv (O_WRONLY)
		929	const_iv (O_RDWR)
		930	const_iv (O_CREAT)
		931	const_iv (O_TRUNC)
		932	const_iv (O_EXCL)
		933	const_iv (O_APPEND)
621		934
622	Newz (0, req, 1, aio_cb);	935	const_iv (O_ASYNC)
		936	const_iv (O_DIRECT)
		937	const_iv (O_NOATIME)
623		938
624	req->type = REQ_QUIT;	939	const_iv (O_CLOEXEC)
625	req->pri = PRI_MAX + PRI_BIAS;	940	const_iv (O_NOCTTY)
		941	const_iv (O_NOFOLLOW)
		942	const_iv (O_NONBLOCK)
		943	const_iv (O_EXEC)
		944	const_iv (O_SEARCH)
		945	const_iv (O_DIRECTORY)
		946	const_iv (O_DSYNC)
		947	const_iv (O_RSYNC)
		948	const_iv (O_SYNC)
		949	const_iv (O_TTY_INIT)
626		950
627	req_send (req);	951	const_iv (S_IFIFO)
628	}	952	const_iv (S_IFCHR)
		953	const_iv (S_IFBLK)
		954	const_iv (S_IFLNK)
		955	const_iv (S_IFREG)
		956	const_iv (S_IFDIR)
		957	const_iv (S_IFWHT)
		958	const_iv (S_IFSOCK)
		959	const_iv (S_IFMT)
629		960
630	static void min_parallel (int nthreads)	961	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
631	{	962	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
632	if (wanted < nthreads)	963	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
633	wanted = nthreads;	964	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
634	}	965	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		966	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
635		967
636	static void max_parallel (int nthreads)	968	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
637	{	969	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
638	int cur = started;	970	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		971	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		972	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
639		973
640	if (wanted > nthreads)	974	const_iv (ST_RDONLY)
641	wanted = nthreads;	975	const_iv (ST_NOSUID)
		976	const_iv (ST_NODEV)
		977	const_iv (ST_NOEXEC)
		978	const_iv (ST_SYNCHRONOUS)
		979	const_iv (ST_MANDLOCK)
		980	const_iv (ST_WRITE)
		981	const_iv (ST_APPEND)
		982	const_iv (ST_IMMUTABLE)
		983	const_iv (ST_NOATIME)
		984	const_iv (ST_NODIRATIME)
		985	const_iv (ST_RELATIME)
642		986
643	while (cur > wanted)	987	const_iv (PROT_NONE)
644	{	988	const_iv (PROT_EXEC)
645	end_thread ();	989	const_iv (PROT_READ)
646	cur--;	990	const_iv (PROT_WRITE)
647	}
648		991
649	while (started > wanted)	992	/*const_iv (MAP_FIXED)*/
650	{	993	const_iv (MAP_PRIVATE)
651	poll_wait ();	994	const_iv (MAP_SHARED)
652	poll_cb ();	995	const_iv (MAP_ANONYMOUS)
653	}
654	}
655		996
656	static void create_pipe ()	997	/* linuxish */
657	{	998	const_iv (MAP_HUGETLB)
658	if (pipe (respipe))	999	const_iv (MAP_LOCKED)
659	croak ("unable to initialize result pipe");	1000	const_iv (MAP_NORESERVE)
		1001	const_iv (MAP_POPULATE)
		1002	const_iv (MAP_NONBLOCK)
660		1003
661	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	1004	const_eio (MCL_FUTURE)
662	croak ("cannot set result pipe to nonblocking mode");	1005	const_eio (MCL_CURRENT)
663		1006
664	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	1007	const_eio (MS_ASYNC)
665	croak ("cannot set result pipe to nonblocking mode");	1008	const_eio (MS_INVALIDATE)
666	}	1009	const_eio (MS_SYNC)
667		1010
668	/*****************************************************************************/	1011	const_eio (MT_MODIFY)
669	/* work around various missing functions */
670		1012
671	#if !HAVE_PREADWRITE	1013	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
672	# define pread aio_pread	1014	const_eio (SYNC_FILE_RANGE_WRITE)
673	# define pwrite aio_pwrite	1015	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
674		1016
675	/*	1017	const_eio (FALLOC_FL_KEEP_SIZE)
676	* make our pread/pwrite safe against themselves, but not against
677	* normal read/write by using a mutex. slows down execution a lot,
678	* but that's your problem, not mine.
679	*/
680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
681		1018
682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1019	const_eio (READDIR_DENTS)
683	{	1020	const_eio (READDIR_DIRS_FIRST)
684	ssize_t res;	1021	const_eio (READDIR_STAT_ORDER)
685	off_t ooffset;	1022	const_eio (READDIR_FOUND_UNKNOWN)
686		1023
687	LOCK (preadwritelock);	1024	const_eio (DT_UNKNOWN)
688	ooffset = lseek (fd, 0, SEEK_CUR);	1025	const_eio (DT_FIFO)
689	lseek (fd, offset, SEEK_SET);	1026	const_eio (DT_CHR)
690	res = read (fd, buf, count);	1027	const_eio (DT_DIR)
691	lseek (fd, ooffset, SEEK_SET);	1028	const_eio (DT_BLK)
692	UNLOCK (preadwritelock);	1029	const_eio (DT_REG)
693		1030	const_eio (DT_LNK)
694	return res;	1031	const_eio (DT_SOCK)
695	}	1032	const_eio (DT_WHT)
696
697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
698	{
699	ssize_t res;
700	off_t ooffset;
701
702	LOCK (preadwritelock);
703	ooffset = lseek (fd, 0, SEEK_CUR);
704	lseek (fd, offset, SEEK_SET);
705	res = write (fd, buf, count);
706	lseek (fd, offset, SEEK_SET);
707	UNLOCK (preadwritelock);
708
709	return res;
710	}
711	#endif
712
713	#if !HAVE_FDATASYNC
714	# define fdatasync fsync
715	#endif
716
717	#if !HAVE_READAHEAD
718	# define readahead aio_readahead
719
720	static ssize_t readahead (int fd, off_t offset, size_t count)
721	{
722	dBUF;
723
724	while (count > 0)
725	{
726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
727
728	pread (fd, aio_buf, len, offset);
729	offset += len;
730	count -= len;
731	}
732
733	errno = 0;
734	}
735	#endif
736
737	#if !HAVE_READDIR_R
738	# define readdir_r aio_readdir_r
739
740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
741
742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
743	{
744	struct dirent *e;
745	int errorno;
746
747	LOCK (readdirlock);
748
749	e = readdir (dirp);
750	errorno = errno;
751
752	if (e)
753	{
754	*res = ent;
755	strcpy (ent->d_name, e->d_name);
756	}
757	else
758	*res = 0;
759
760	UNLOCK (readdirlock);
761
762	errno = errorno;
763	return e ? 0 : -1;
764	}
765	#endif
766
767	/* sendfile always needs emulation */
768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
769	{
770	ssize_t res;
771
772	if (!count)
773	return 0;
774
775	#if HAVE_SENDFILE
776	# if __linux
777	res = sendfile (ofd, ifd, &offset, count);
778
779	# elif __freebsd
780	/*
781	* Of course, the freebsd sendfile is a dire hack with no thoughts
782	* wasted on making it similar to other I/O functions.
783	*/
784	{
785	off_t sbytes;
786	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
787
788	if (res < 0 && sbytes)
789	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
790	res = sbytes;
791	}	1033	};
792		1034
793	# elif __hpux	1035	aio_stash = gv_stashpv ("IO::AIO" , 1);
794	res = sendfile (ofd, ifd, offset, count, 0, 0);	1036	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1037	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1038	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
795		1039
796	# elif __solaris	1040	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
797	{	1041	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
798	struct sendfilevec vec;
799	size_t sbytes;
800		1042
801	vec.sfv_fd = ifd;	1043	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
802	vec.sfv_flag = 0;
803	vec.sfv_off = offset;
804	vec.sfv_len = count;
805		1044
806	res = sendfilev (ofd, &vec, 1, &sbytes);	1045	reinit ();
		1046	}
807		1047
808	if (res < 0 && sbytes)	1048	void
		1049	reinit ()
		1050	PROTOTYPE:
		1051
		1052	void
		1053	max_poll_reqs (unsigned int nreqs)
		1054	PROTOTYPE: $
		1055	CODE:
		1056	eio_set_max_poll_reqs (nreqs);
		1057
		1058	void
		1059	max_poll_time (double nseconds)
		1060	PROTOTYPE: $
		1061	CODE:
		1062	eio_set_max_poll_time (nseconds);
		1063
		1064	void
		1065	min_parallel (unsigned int nthreads)
		1066	PROTOTYPE: $
		1067	CODE:
		1068	eio_set_min_parallel (nthreads);
		1069
		1070	void
		1071	max_parallel (unsigned int nthreads)
		1072	PROTOTYPE: $
		1073	CODE:
		1074	eio_set_max_parallel (nthreads);
		1075
		1076	void
		1077	max_idle (unsigned int nthreads)
		1078	PROTOTYPE: $
		1079	CODE:
		1080	eio_set_max_idle (nthreads);
		1081
		1082	void
		1083	idle_timeout (unsigned int seconds)
		1084	PROTOTYPE: $
		1085	CODE:
		1086	eio_set_idle_timeout (seconds);
		1087
		1088	void
		1089	max_outstanding (unsigned int maxreqs)
		1090	PROTOTYPE: $
		1091	CODE:
		1092	max_outstanding = maxreqs;
		1093
		1094	void
		1095	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1096	PPCODE:
		1097	{
		1098	dREQ;
		1099
		1100	req->type = EIO_WD_OPEN;
		1101	req_set_path1 (req, pathname);
		1102
		1103	REQ_SEND;
		1104	}
		1105
		1106	void
		1107	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1108	PPCODE:
		1109	{
		1110	dREQ;
		1111
		1112	req->type = EIO_OPEN;
		1113	req_set_path1 (req, pathname);
		1114	req->int1 = flags;
		1115	req->int2 = mode;
		1116
		1117	REQ_SEND;
		1118	}
		1119
		1120	void
		1121	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1122	ALIAS:
		1123	aio_fsync = EIO_FSYNC
		1124	aio_fdatasync = EIO_FDATASYNC
		1125	aio_syncfs = EIO_SYNCFS
		1126	PPCODE:
		1127	{
		1128	int fd = s_fileno_croak (fh, 0);
		1129	dREQ;
		1130
		1131	req->type = ix;
		1132	req->sv1 = newSVsv (fh);
		1133	req->int1 = fd;
		1134
		1135	REQ_SEND (req);
		1136	}
		1137
		1138	void
		1139	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1140	PPCODE:
		1141	{
		1142	int fd = s_fileno_croak (fh, 0);
		1143	dREQ;
		1144
		1145	req->type = EIO_SYNC_FILE_RANGE;
		1146	req->sv1 = newSVsv (fh);
		1147	req->int1 = fd;
		1148	req->offs = offset;
809	res = sbytes;	1149	req->size = nbytes;
810	}	1150	req->int2 = flags;
811		1151
812	# endif	1152	REQ_SEND (req);
		1153	}
		1154
		1155	void
		1156	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1157	PPCODE:
		1158	{
		1159	int fd = s_fileno_croak (fh, 0);
		1160	dREQ;
		1161
		1162	req->type = EIO_FALLOCATE;
		1163	req->sv1 = newSVsv (fh);
		1164	req->int1 = fd;
		1165	req->int2 = mode;
		1166	req->offs = offset;
		1167	req->size = len;
		1168
		1169	REQ_SEND (req);
		1170	}
		1171
		1172	void
		1173	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1174	PPCODE:
		1175	{
		1176	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1177	int fd = s_fileno_croak (fh, 0);
		1178	dREQ;
		1179
		1180	if (expect_false (close_fd < 0))
		1181	{
		1182	int pipefd [2];
		1183
		1184	if (
		1185	#ifdef _WIN32
		1186	_pipe (pipefd, 1, _O_BINARY) < 0
813	#else	1187	#else
814	res = -1;	1188	pipe (pipefd) < 0
815	errno = ENOSYS;	1189	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
816	#endif	1190	#endif
817		1191	|| close (pipefd [1]) < 0
818	if (res < 0
819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
820	#if __solaris
821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
822	#endif
823	)
824	)
825	{
826	/* emulate sendfile. this is a major pain in the ass */
827	dBUF;
828
829	res = 0;
830
831	while (count)
832	{
833	ssize_t cnt;
834
835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
836
837	if (cnt <= 0)
838	{	1192	)
839	if (cnt && !res) res = -1;	1193	abort (); /*D*/
840	break;
841	}
842		1194
843	cnt = write (ofd, aio_buf, cnt);	1195	close_fd = pipefd [0];
844
845	if (cnt <= 0)
846	{
847	if (cnt && !res) res = -1;
848	break;
849	}
850
851	offset += cnt;
852	res += cnt;
853	count -= cnt;
854	}
855	}
856
857	return res;
858	}
859
860	/* read a full directory */
861	static void scandir_ (aio_req req, worker *self)
862	{
863	DIR *dirp;
864	union
865	{
866	struct dirent d;
867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
868	} *u;
869	struct dirent *entp;
870	char *name, *names;
871	int memlen = 4096;
872	int memofs = 0;
873	int res = 0;
874	int errorno;
875
876	LOCK (wrklock);
877	self->dirp = dirp = opendir (req->dataptr);
878	self->dbuf = u = malloc (sizeof (*u));
879	UNLOCK (wrklock);
880
881	req->data2ptr = names = malloc (memlen);
882
883	if (dirp && u && names)
884	for (;;)
885	{
886	errno = 0;
887	readdir_r (dirp, &u->d, &entp);
888
889	if (!entp)
890	break;
891
892	name = entp->d_name;
893
894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
895	{
896	int len = strlen (name) + 1;
897
898	res++;
899
900	while (memofs + len > memlen)
901	{
902	memlen *= 2;
903	LOCK (wrklock);
904	req->data2ptr = names = realloc (names, memlen);
905	UNLOCK (wrklock);
906
907	if (!names)
908	break;
909	}
910
911	memcpy (names + memofs, name, len);
912	memofs += len;
913	}	1196	}
914	}
915		1197
916	if (errno)
917	res = -1;
918
919	req->result = res;
920	}
921
922	/*****************************************************************************/
923
924	static void *aio_proc (void *thr_arg)
925	{
926	aio_req req;
927	int type;
928	worker *self = (worker *)thr_arg;
929
930	do
931	{
932	LOCK (reqlock);
933
934	for (;;)
935	{
936	self->req = req = reqq_shift (&req_queue);
937
938	if (req)
939	break;
940
941	pthread_cond_wait (&reqwait, &reqlock);
942	}
943
944	UNLOCK (reqlock);
945
946	errno = 0; /* strictly unnecessary */
947	type = req->type; /* remember type for QUIT check */
948
949	if (!(req->flags & FLAG_CANCELLED))
950	switch (type)
951	{
952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
954
955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
957
958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
961
962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
963	case REQ_CLOSE: req->result = close (req->fd); break;
964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
969
970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
971	case REQ_FSYNC: req->result = fsync (req->fd); break;
972	case REQ_READDIR: scandir_ (req, self); break;
973
974	case REQ_BUSY:
975	{
976	struct timeval tv;
977
978	tv.tv_sec = req->fd;
979	tv.tv_usec = req->fd2;
980
981	req->result = select (0, 0, 0, 0, &tv);
982	}
983
984	case REQ_GROUP:
985	case REQ_NOP:
986	case REQ_QUIT:
987	break;
988
989	default:
990	req->result = ENOSYS;
991	break;
992	}
993
994	req->errorno = errno;
995
996	LOCK (reslock);
997
998	if (!reqq_push (&res_queue, req))
999	/* write a dummy byte to the pipe so fh becomes ready */
1000	write (respipe [1], &respipe, 1);
1001
1002	self->req = 0;
1003	worker_clear (self);
1004
1005	UNLOCK (reslock);
1006	}
1007	while (type != REQ_QUIT);
1008
1009	LOCK (wrklock);
1010	worker_free (self);
1011	UNLOCK (wrklock);
1012
1013	return 0;
1014	}
1015
1016	/*****************************************************************************/
1017
1018	static void atfork_prepare (void)
1019	{
1020	LOCK (wrklock);
1021	LOCK (reqlock);
1022	LOCK (reslock);
1023	#if !HAVE_PREADWRITE
1024	LOCK (preadwritelock);
1025	#endif
1026	#if !HAVE_READDIR_R
1027	LOCK (readdirlock);
1028	#endif
1029	}
1030
1031	static void atfork_parent (void)
1032	{
1033	#if !HAVE_READDIR_R
1034	UNLOCK (readdirlock);
1035	#endif
1036	#if !HAVE_PREADWRITE
1037	UNLOCK (preadwritelock);
1038	#endif
1039	UNLOCK (reslock);
1040	UNLOCK (reqlock);
1041	UNLOCK (wrklock);
1042	}
1043
1044	static void atfork_child (void)
1045	{
1046	aio_req prv;
1047
1048	while (prv = reqq_shift (&req_queue))
1049	req_free (prv);
1050
1051	while (prv = reqq_shift (&res_queue))
1052	req_free (prv);
1053
1054	while (wrk_first.next != &wrk_first)
1055	{
1056	worker *wrk = wrk_first.next;
1057
1058	if (wrk->req)
1059	req_free (wrk->req);
1060
1061	worker_clear (wrk);
1062	worker_free (wrk);
1063	}
1064
1065	started = 0;
1066	nreqs = 0;
1067
1068	close (respipe [0]);
1069	close (respipe [1]);
1070	create_pipe ();
1071
1072	atfork_parent ();
1073	}
1074
1075	#define dREQ \
1076	aio_req req; \
1077	int req_pri = next_pri; \
1078	next_pri = DEFAULT_PRI + PRI_BIAS; \
1079	\
1080	if (SvOK (callback) && !SvROK (callback)) \
1081	croak ("callback must be undef or of reference type"); \
1082	\
1083	Newz (0, req, 1, aio_cb); \
1084	if (!req) \
1085	croak ("out of memory during aio_req allocation"); \
1086	\
1087	req->callback = newSVsv (callback); \
1088	req->pri = req_pri
1089
1090	#define REQ_SEND \
1091	req_send (req); \
1092	\
1093	if (GIMME_V != G_VOID) \
1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1095
1096	MODULE = IO::AIO PACKAGE = IO::AIO
1097
1098	PROTOTYPES: ENABLE
1099
1100	BOOT:
1101	{
1102	HV *stash = gv_stashpv ("IO::AIO", 1);
1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1106
1107	create_pipe ();
1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1109	}
1110
1111	void
1112	min_parallel (nthreads)
1113	int nthreads
1114	PROTOTYPE: $
1115
1116	void
1117	max_parallel (nthreads)
1118	int nthreads
1119	PROTOTYPE: $
1120
1121	int
1122	max_outstanding (nreqs)
1123	int nreqs
1124	PROTOTYPE: $
1125	CODE:
1126	RETVAL = max_outstanding;
1127	max_outstanding = nreqs;
1128
1129	void
1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1131	SV * pathname
1132	int flags
1133	int mode
1134	SV * callback
1135	PROTOTYPE: $$$;$
1136	PPCODE:
1137	{
1138	dREQ;
1139
1140	req->type = REQ_OPEN;	1198	req->type = EIO_DUP2;
		1199	req->int1 = close_fd;
1141	req->data = newSVsv (pathname);	1200	req->sv2 = newSVsv (fh);
1142	req->dataptr = SvPVbyte_nolen (req->data);	1201	req->int2 = fd;
1143	req->fd = flags;
1144	req->mode = mode;
1145		1202
1146	REQ_SEND;	1203	REQ_SEND (req);
1147	}	1204	}
1148		1205
1149	void	1206	void
1150	aio_close (fh,callback=&PL_sv_undef)	1207	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1151	SV * fh
1152	SV * callback
1153	PROTOTYPE: $;$
1154	ALIAS:	1208	ALIAS:
1155	aio_close = REQ_CLOSE
1156	aio_fsync = REQ_FSYNC
1157	aio_fdatasync = REQ_FDATASYNC
1158	PPCODE:
1159	{
1160	dREQ;
1161
1162	req->type = ix;
1163	req->fh = newSVsv (fh);
1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1165
1166	REQ_SEND (req);
1167	}
1168
1169	void
1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1171	SV * fh
1172	UV offset
1173	UV length
1174	SV * data
1175	UV dataoffset
1176	SV * callback
1177	ALIAS:
1178	aio_read = REQ_READ	1209	aio_read = EIO_READ
1179	aio_write = REQ_WRITE	1210	aio_write = EIO_WRITE
1180	PROTOTYPE: $$$$$;$
1181	PPCODE:	1211	PPCODE:
1182	{	1212	{
1183	aio_req req;
1184	STRLEN svlen;	1213	STRLEN svlen;
		1214	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1185	char *svptr = SvPVbyte (data, svlen);	1215	char *svptr = SvPVbyte (data, svlen);
1186		1216	UV len = SvUV (length);
1187	SvUPGRADE (data, SVt_PV);
1188	SvPOK_on (data);
1189		1217
1190	if (dataoffset < 0)	1218	if (dataoffset < 0)
1191	dataoffset += svlen;	1219	dataoffset += svlen;
1192		1220
1193	if (dataoffset < 0 || dataoffset > svlen)	1221	if (dataoffset < 0 || dataoffset > svlen)
1194	croak ("data offset outside of string");	1222	croak ("dataoffset outside of data scalar");
1195		1223
1196	if (ix == REQ_WRITE)	1224	if (ix == EIO_WRITE)
1197	{	1225	{
1198	/* write: check length and adjust. */	1226	/* write: check length and adjust. */
1199	if (length < 0 || length + dataoffset > svlen)	1227	if (!SvOK (length) || len + dataoffset > svlen)
1200	length = svlen - dataoffset;	1228	len = svlen - dataoffset;
1201	}	1229	}
1202	else	1230	else
1203	{	1231	{
1204	/* read: grow scalar as necessary */	1232	/* read: check type and grow scalar as necessary */
		1233	SvUPGRADE (data, SVt_PV);
1205	svptr = SvGROW (data, length + dataoffset);	1234	svptr = SvGROW (data, len + dataoffset + 1);
1206	}	1235	}
1207
1208	if (length < 0)
1209	croak ("length must not be negative");
1210		1236
1211	{	1237	{
1212	dREQ;	1238	dREQ;
1213		1239
1214	req->type = ix;	1240	req->type = ix;
1215	req->fh = newSVsv (fh);	1241	req->sv1 = newSVsv (fh);
1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1242	req->int1 = fd;
1217	: IoOFP (sv_2io (fh)));	1243	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218	req->offset = offset;	1244	req->size = len;
1219	req->length = length;
1220	req->data = SvREFCNT_inc (data);	1245	req->sv2 = SvREFCNT_inc (data);
1221	req->dataptr = (char *)svptr + dataoffset;	1246	req->ptr2 = (char *)svptr + dataoffset;
		1247	req->stroffset = dataoffset;
1222		1248
1223	if (!SvREADONLY (data))	1249	if (!SvREADONLY (data))
1224	{	1250	{
1225	SvREADONLY_on (data);	1251	SvREADONLY_on (data);
1226	req->data2ptr = (void *)data;	1252	req->flags |= FLAG_SV2_RO_OFF;
1227	}	1253	}
1228		1254
1229	REQ_SEND;	1255	REQ_SEND;
1230	}	1256	}
1231	}	1257	}
1232		1258
1233	void	1259	void
1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1260	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1235	SV * out_fh	1261	ALIAS:
1236	SV * in_fh	1262	aio_readlink = EIO_READLINK
1237	UV in_offset	1263	aio_realpath = EIO_REALPATH
1238	UV length
1239	SV * callback
1240	PROTOTYPE: $$$$;$
1241	PPCODE:	1264	PPCODE:
1242	{	1265	{
		1266	dREQ;
		1267
		1268	req->type = ix;
		1269	req_set_path1 (req, pathname);
		1270
		1271	REQ_SEND;
		1272	}
		1273
		1274	void
		1275	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1276	PPCODE:
		1277	{
		1278	int ifd = s_fileno_croak (in_fh , 0);
		1279	int ofd = s_fileno_croak (out_fh, 1);
1243	dREQ;	1280	dREQ;
1244		1281
1245	req->type = REQ_SENDFILE;	1282	req->type = EIO_SENDFILE;
1246	req->fh = newSVsv (out_fh);	1283	req->sv1 = newSVsv (out_fh);
1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1284	req->int1 = ofd;
1248	req->fh2 = newSVsv (in_fh);	1285	req->sv2 = newSVsv (in_fh);
1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1286	req->int2 = ifd;
1250	req->offset = in_offset;	1287	req->offs = in_offset;
1251	req->length = length;	1288	req->size = length;
1252		1289
1253	REQ_SEND;	1290	REQ_SEND;
1254	}	1291	}
1255		1292
1256	void	1293	void
1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1294	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1258	SV * fh
1259	UV offset
1260	IV length
1261	SV * callback
1262	PROTOTYPE: $$$;$
1263	PPCODE:	1295	PPCODE:
1264	{	1296	{
		1297	int fd = s_fileno_croak (fh, 0);
1265	dREQ;	1298	dREQ;
1266		1299
1267	req->type = REQ_READAHEAD;	1300	req->type = EIO_READAHEAD;
1268	req->fh = newSVsv (fh);	1301	req->sv1 = newSVsv (fh);
1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1302	req->int1 = fd;
1270	req->offset = offset;	1303	req->offs = offset;
1271	req->length = length;	1304	req->size = length;
1272		1305
1273	REQ_SEND;	1306	REQ_SEND;
1274	}	1307	}
1275		1308
1276	void	1309	void
1277	aio_stat (fh_or_path,callback=&PL_sv_undef)	1310	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1278	SV * fh_or_path
1279	SV * callback
1280	ALIAS:	1311	ALIAS:
1281	aio_stat = REQ_STAT	1312	aio_stat = EIO_STAT
1282	aio_lstat = REQ_LSTAT	1313	aio_lstat = EIO_LSTAT
		1314	aio_statvfs = EIO_STATVFS
1283	PPCODE:	1315	PPCODE:
1284	{	1316	{
1285	dREQ;	1317	dREQ;
1286		1318
1287	New (0, req->statdata, 1, Stat_t);	1319	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1288	if (!req->statdata)
1289	{
1290	req_free (req);
1291	croak ("out of memory during aio_req->statdata allocation");
1292	}
1293
1294	if (SvPOK (fh_or_path))
1295	{
1296	req->type = ix;
1297	req->data = newSVsv (fh_or_path);
1298	req->dataptr = SvPVbyte_nolen (req->data);
1299	}
1300	else
1301	{
1302	req->type = REQ_FSTAT;
1303	req->fh = newSVsv (fh_or_path);
1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1305	}
1306		1320
1307	REQ_SEND;	1321	REQ_SEND;
1308	}	1322	}
1309		1323
		1324	UV
		1325	major (UV dev)
		1326	ALIAS:
		1327	minor = 1
		1328	CODE:
		1329	RETVAL = ix ? major (dev) : minor (dev);
		1330	OUTPUT:
		1331	RETVAL
		1332
		1333	UV
		1334	makedev (UV maj, UV min)
		1335	CODE:
		1336	RETVAL = makedev (maj, min);
		1337	OUTPUT:
		1338	RETVAL
		1339
1310	void	1340	void
		1341	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1342	PPCODE:
		1343	{
		1344	dREQ;
		1345
		1346	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1347	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1348	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1349
		1350	REQ_SEND;
		1351	}
		1352
		1353	void
		1354	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1355	PPCODE:
		1356	{
		1357	dREQ;
		1358
		1359	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1360	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1361
		1362	REQ_SEND;
		1363	}
		1364
		1365	void
		1366	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1367	PPCODE:
		1368	{
		1369	dREQ;
		1370
		1371	req->int2 = mode;
		1372	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1373
		1374	REQ_SEND;
		1375	}
		1376
		1377	void
		1378	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1379	PPCODE:
		1380	{
		1381	dREQ;
		1382
		1383	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1384	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1385	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1386
		1387	REQ_SEND;
		1388	}
		1389
		1390	void
		1391	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1392	PPCODE:
		1393	{
		1394	dREQ;
		1395
		1396	req->type = EIO_READDIR;
		1397	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1398
		1399	if (flags & EIO_READDIR_DENTS)
		1400	req->int1 |= EIO_READDIR_CUSTOM2;
		1401
		1402	req_set_path1 (req, pathname);
		1403
		1404	REQ_SEND;
		1405	}
		1406
		1407	void
		1408	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1409	PPCODE:
		1410	{
		1411	dREQ;
		1412
		1413	req->type = EIO_MKDIR;
		1414	req->int2 = mode;
		1415	req_set_path1 (req, pathname);
		1416
		1417	REQ_SEND;
		1418	}
		1419
		1420	void
1311	aio_unlink (pathname,callback=&PL_sv_undef)	1421	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1312	SV * pathname
1313	SV * callback
1314	ALIAS:	1422	ALIAS:
1315	aio_unlink = REQ_UNLINK	1423	aio_unlink = EIO_UNLINK
1316	aio_rmdir = REQ_RMDIR	1424	aio_rmdir = EIO_RMDIR
1317	aio_readdir = REQ_READDIR	1425	aio_readdir = EIO_READDIR
1318	PPCODE:	1426	PPCODE:
1319	{	1427	{
1320	dREQ;	1428	dREQ;
1321		1429
1322	req->type = ix;	1430	req->type = ix;
1323	req->data = newSVsv (pathname);	1431	req_set_path1 (req, pathname);
1324	req->dataptr = SvPVbyte_nolen (req->data);	1432
1325
1326	REQ_SEND;	1433	REQ_SEND;
1327	}	1434	}
1328		1435
1329	void	1436	void
1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1437	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1331	SV * oldpath
1332	SV * newpath
1333	SV * callback
1334	ALIAS:	1438	ALIAS:
1335	aio_link = REQ_LINK	1439	aio_link = EIO_LINK
1336	aio_symlink = REQ_SYMLINK	1440	aio_symlink = EIO_SYMLINK
1337	aio_rename = REQ_RENAME	1441	aio_rename = EIO_RENAME
1338	PPCODE:	1442	PPCODE:
1339	{	1443	{
		1444	eio_wd wd2 = 0;
1340	dREQ;	1445	dREQ;
1341		1446
1342	req->type = ix;	1447	req->type = ix;
1343	req->fh = newSVsv (oldpath);	1448	req_set_path1 (req, oldpath);
1344	req->data2ptr = SvPVbyte_nolen (req->fh);	1449	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1345	req->data = newSVsv (newpath);	1450	req->int3 = (long)wd2;
1346	req->dataptr = SvPVbyte_nolen (req->data);
1347		1451
1348	REQ_SEND;	1452	REQ_SEND;
1349	}	1453	}
1350		1454
1351	void	1455	void
1352	aio_busy (delay,callback=&PL_sv_undef)	1456	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1353	double delay
1354	SV * callback
1355	PPCODE:	1457	PPCODE:
1356	{	1458	{
1357	dREQ;	1459	dREQ;
1358		1460
1359	req->type = REQ_BUSY;	1461	req->type = EIO_MKNOD;
1360	req->fd = delay < 0. ? 0 : delay;	1462	req->int2 = (mode_t)mode;
1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1463	req->offs = dev;
1362		1464	req_set_path1 (req, pathname);
		1465
1363	REQ_SEND;	1466	REQ_SEND;
1364	}	1467	}
1365		1468
1366	void	1469	void
1367	aio_group (callback=&PL_sv_undef)	1470	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1368	SV * callback	1471	ALIAS:
1369	PROTOTYPE: ;$	1472	aio_mtouch = EIO_MTOUCH
		1473	aio_msync = EIO_MSYNC
1370	PPCODE:	1474	PPCODE:
1371	{	1475	{
		1476	STRLEN svlen;
		1477	char *svptr = SvPVbyte (data, svlen);
		1478	UV len = SvUV (length);
		1479
		1480	if (offset < 0)
		1481	offset += svlen;
		1482
		1483	if (offset < 0 || offset > svlen)
		1484	croak ("offset outside of scalar");
		1485
		1486	if (!SvOK (length) || len + offset > svlen)
		1487	len = svlen - offset;
		1488
		1489	{
		1490	dREQ;
		1491
		1492	req->type = ix;
		1493	req->sv2 = SvREFCNT_inc (data);
		1494	req->ptr2 = (char *)svptr + offset;
		1495	req->size = len;
		1496	req->int1 = flags;
		1497
		1498	REQ_SEND;
		1499	}
		1500	}
		1501
		1502	void
		1503	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1504	PPCODE:
		1505	{
		1506	STRLEN svlen;
		1507	char *svptr = SvPVbyte (data, svlen);
		1508	UV len = SvUV (length);
		1509
		1510	if (offset < 0)
		1511	offset += svlen;
		1512
		1513	if (offset < 0 || offset > svlen)
		1514	croak ("offset outside of scalar");
		1515
		1516	if (!SvOK (length) || len + offset > svlen)
		1517	len = svlen - offset;
		1518
		1519	{
		1520	dREQ;
		1521
		1522	req->type = EIO_MLOCK;
		1523	req->sv2 = SvREFCNT_inc (data);
		1524	req->ptr2 = (char *)svptr + offset;
		1525	req->size = len;
		1526
		1527	REQ_SEND;
		1528	}
		1529	}
		1530
		1531	void
		1532	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1533	PPCODE:
		1534	{
		1535	dREQ;
		1536
		1537	req->type = EIO_MLOCKALL;
		1538	req->int1 = flags;
		1539
		1540	REQ_SEND;
		1541	}
		1542
		1543	void
		1544	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1545	PPCODE:
		1546	{
1372	dREQ;	1547	dREQ;
1373		1548
		1549	req->type = EIO_BUSY;
		1550	req->nv1 = delay < 0. ? 0. : delay;
		1551
		1552	REQ_SEND;
		1553	}
		1554
		1555	void
		1556	aio_group (SV *callback=&PL_sv_undef)
		1557	PPCODE:
		1558	{
		1559	dREQ;
		1560
1374	req->type = REQ_GROUP;	1561	req->type = EIO_GROUP;
		1562
1375	req_send (req);	1563	req_submit (req);
1376
1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1564	XPUSHs (req_sv (req, aio_grp_stash));
1378	}	1565	}
1379		1566
1380	void	1567	void
1381	aio_nop (callback=&PL_sv_undef)	1568	aio_nop (SV *callback=&PL_sv_undef)
1382	SV * callback	1569	ALIAS:
		1570	aio_nop = EIO_NOP
		1571	aio_sync = EIO_SYNC
1383	PPCODE:	1572	PPCODE:
1384	{	1573	{
1385	dREQ;	1574	dREQ;
1386		1575
1387	req->type = REQ_NOP;	1576	req->type = ix;
1388		1577
1389	REQ_SEND;	1578	REQ_SEND;
1390	}	1579	}
1391		1580
1392	void	1581	int
1393	aioreq_pri (int pri = DEFAULT_PRI)	1582	aioreq_pri (int pri = 0)
1394	CODE:	1583	CODE:
		1584	RETVAL = next_pri;
		1585	if (items > 0)
		1586	{
1395	if (pri < PRI_MIN) pri = PRI_MIN;	1587	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396	if (pri > PRI_MAX) pri = PRI_MAX;	1588	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397	next_pri = pri + PRI_BIAS;	1589	next_pri = pri;
		1590	}
		1591	OUTPUT:
		1592	RETVAL
1398		1593
1399	void	1594	void
1400	aioreq_nice (int nice = 0)	1595	aioreq_nice (int nice = 0)
1401	CODE:	1596	CODE:
1402	nice = next_pri - nice;	1597	nice = next_pri - nice;
1403	if (nice < PRI_MIN) nice = PRI_MIN;	1598	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404	if (nice > PRI_MAX) nice = PRI_MAX;	1599	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405	next_pri = nice + PRI_BIAS;	1600	next_pri = nice;
1406		1601
1407	void	1602	void
1408	flush ()	1603	flush ()
1409	PROTOTYPE:
1410	CODE:	1604	CODE:
1411	while (nreqs)	1605	while (eio_nreqs ())
1412	{	1606	{
1413	poll_wait ();	1607	poll_wait ();
1414	poll_cb ();	1608	poll_cb ();
1415	}	1609	}
1416		1610
1417	void	1611	int
1418	poll()	1612	poll ()
1419	PROTOTYPE:
1420	CODE:	1613	CODE:
1421	if (nreqs)
1422	{
1423	poll_wait ();	1614	poll_wait ();
1424	poll_cb ();	1615	RETVAL = poll_cb ();
1425	}
1426
1427	int
1428	poll_fileno()
1429	PROTOTYPE:
1430	CODE:
1431	RETVAL = respipe [0];
1432	OUTPUT:	1616	OUTPUT:
1433	RETVAL	1617	RETVAL
1434		1618
1435	int	1619	int
		1620	poll_fileno ()
		1621	CODE:
		1622	RETVAL = s_epipe_fd (&respipe);
		1623	OUTPUT:
		1624	RETVAL
		1625
		1626	int
1436	poll_cb(...)	1627	poll_cb (...)
1437	PROTOTYPE:	1628	PROTOTYPE:
1438	CODE:	1629	CODE:
1439	RETVAL = poll_cb ();	1630	RETVAL = poll_cb ();
1440	OUTPUT:	1631	OUTPUT:
1441	RETVAL	1632	RETVAL
1442		1633
1443	void	1634	void
1444	poll_wait()	1635	poll_wait ()
1445	PROTOTYPE:
1446	CODE:	1636	CODE:
1447	if (nreqs)
1448	poll_wait ();	1637	poll_wait ();
1449		1638
1450	int	1639	int
1451	nreqs()	1640	nreqs ()
1452	PROTOTYPE:
1453	CODE:	1641	CODE:
1454	RETVAL = nreqs;	1642	RETVAL = eio_nreqs ();
1455	OUTPUT:	1643	OUTPUT:
1456	RETVAL	1644	RETVAL
1457		1645
		1646	int
		1647	nready ()
		1648	CODE:
		1649	RETVAL = eio_nready ();
		1650	OUTPUT:
		1651	RETVAL
		1652
		1653	int
		1654	npending ()
		1655	CODE:
		1656	RETVAL = eio_npending ();
		1657	OUTPUT:
		1658	RETVAL
		1659
		1660	int
		1661	nthreads ()
		1662	CODE:
		1663	RETVAL = eio_nthreads ();
		1664	OUTPUT:
		1665	RETVAL
		1666
		1667	int
		1668	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1669	CODE:
		1670	RETVAL = posix_fadvise (fh, offset, length, advice);
		1671	OUTPUT:
		1672	RETVAL
		1673
		1674	IV
		1675	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1676	CODE:
		1677	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	void
		1682	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1683	PPCODE:
		1684	sv_unmagic (scalar, MMAP_MAGIC);
		1685	{
		1686	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1687	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1688	if (addr == (void *)-1)
		1689	XSRETURN_NO;
		1690
		1691	sv_force_normal (scalar);
		1692
		1693	/* we store the length in mg_obj, as namlen is I32 :/ */
		1694	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1695	->mg_obj = (SV *)length;
		1696
		1697	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1698
		1699	if (!(prot & PROT_WRITE))
		1700	SvREADONLY_on (scalar);
		1701
		1702	if (SvLEN (scalar))
		1703	Safefree (SvPVX (scalar));
		1704
		1705	SvPVX (scalar) = (char *)addr;
		1706	SvCUR_set (scalar, length);
		1707	SvLEN_set (scalar, 0);
		1708	SvPOK_only (scalar);
		1709
		1710	XSRETURN_YES;
		1711	}
		1712
		1713	void
		1714	munmap (SV *scalar)
		1715	CODE:
		1716	sv_unmagic (scalar, MMAP_MAGIC);
		1717
		1718	int
		1719	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1720	ALIAS:
		1721	mprotect = 1
		1722	CODE:
		1723	{
		1724	STRLEN svlen;
		1725	void *addr = SvPVbyte (scalar, svlen);
		1726	size_t len = SvUV (length);
		1727
		1728	if (offset < 0)
		1729	offset += svlen;
		1730
		1731	if (offset < 0 || offset > svlen)
		1732	croak ("offset outside of scalar");
		1733
		1734	if (!SvOK (length) || len + offset > svlen)
		1735	len = svlen - offset;
		1736
		1737	addr = (void *)(((intptr_t)addr) + offset);
		1738	eio_page_align (&addr, &len);
		1739
		1740	switch (ix)
		1741	{
		1742	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1743	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1744	}
		1745	}
		1746	OUTPUT:
		1747	RETVAL
		1748
		1749	int
		1750	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1751	CODE:
		1752	{
		1753	STRLEN svlen;
		1754	void *addr = SvPVbyte (scalar, svlen);
		1755	size_t len = SvUV (length);
		1756
		1757	if (offset < 0)
		1758	offset += svlen;
		1759
		1760	if (offset < 0 || offset > svlen)
		1761	croak ("offset outside of scalar");
		1762
		1763	if (!SvOK (length) || len + offset > svlen)
		1764	len = svlen - offset;
		1765
		1766	addr = (void *)(((intptr_t)addr) + offset);
		1767	eio_page_align (&addr, &len);
		1768	#if _POSIX_MEMLOCK_RANGE
		1769	RETVAL = munlock (addr, len);
		1770	#else
		1771	RETVAL = ((errno = ENOSYS), -1);
		1772	#endif
		1773	}
		1774	OUTPUT:
		1775	RETVAL
		1776
		1777	int
		1778	munlockall ()
		1779	CODE:
		1780	#if _POSIX_MEMLOCK
		1781	munlockall ();
		1782	#else
		1783	RETVAL = -1;
		1784	errno = ENOSYS;
		1785	#endif
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	void _on_next_submit (SV *cb)
		1790	CODE:
		1791	SvREFCNT_dec (on_next_submit);
		1792	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1793
1458	PROTOTYPES: DISABLE	1794	PROTOTYPES: DISABLE
		1795
		1796	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1797
		1798	BOOT:
		1799	{
		1800	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1801	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1802	}
		1803
		1804	void
		1805	DESTROY (SV *self)
		1806	CODE:
		1807	{
		1808	aio_wd wd = SvAIO_WD (self);
		1809	#if HAVE_AT
		1810	{
		1811	SV *callback = &PL_sv_undef;
		1812	dREQ; /* clobbers next_pri :/ */
		1813	next_pri = req->pri; /* restore next_pri */
		1814	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1815	req->type = EIO_WD_CLOSE;
		1816	req->wd = wd;
		1817	REQ_SEND;
		1818	}
		1819	#else
		1820	eio_wd_close_sync (wd);
		1821	#endif
		1822	}
1459		1823
1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1824	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461		1825
1462	void	1826	void
1463	cancel (aio_req_ornot req)	1827	cancel (aio_req_ornot req)
1464	CODE:	1828	CODE:
1465	req_cancel (req);	1829	eio_cancel (req);
1466		1830
1467	void	1831	void
1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1832	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1469	CODE:	1833	PPCODE:
		1834	{
		1835	if (GIMME_V != G_VOID)
		1836	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1837
		1838	if (items > 1)
		1839	{
		1840	SV *cb_cv =get_cb (callback);
		1841
1470	SvREFCNT_dec (req->callback);	1842	SvREFCNT_dec (req->callback);
1471	req->callback = newSVsv (callback);	1843	req->callback = SvREFCNT_inc (cb_cv);
		1844	}
		1845	}
1472		1846
1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1847	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474		1848
1475	void	1849	void
1476	add (aio_req grp, ...)	1850	add (aio_req grp, ...)
1477	PPCODE:	1851	PPCODE:
1478	{	1852	{
1479	int i;	1853	int i;
1480	aio_req req;
1481		1854
1482	if (grp->fd == 2)	1855	if (grp->int1 == 2)
1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1856	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484		1857
1485	for (i = 1; i < items; ++i )	1858	for (i = 1; i < items; ++i )
1486	{	1859	{
		1860	aio_req req;
		1861
1487	if (GIMME_V != G_VOID)	1862	if (GIMME_V != G_VOID)
1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1863	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489		1864
1490	req = SvAIO_REQ (ST (i));	1865	req = SvAIO_REQ (ST (i));
1491		1866
1492	if (req)	1867	if (req)
1493	{	1868	eio_grp_add (grp, req);
1494	++grp->length;
1495	req->grp = grp;
1496
1497	req->grp_prev = 0;
1498	req->grp_next = grp->grp_first;
1499
1500	if (grp->grp_first)
1501	grp->grp_first->grp_prev = req;
1502
1503	grp->grp_first = req;
1504	}
1505	}	1869	}
1506	}	1870	}
1507		1871
1508	void	1872	void
1509	cancel_subs (aio_req_ornot req)	1873	cancel_subs (aio_req_ornot req)
…		…
1513	void	1877	void
1514	result (aio_req grp, ...)	1878	result (aio_req grp, ...)
1515	CODE:	1879	CODE:
1516	{	1880	{
1517	int i;	1881	int i;
		1882	AV *av;
		1883
		1884	grp->errorno = errno;
		1885
1518	AV *av = newAV ();	1886	av = newAV ();
		1887	av_extend (av, items - 1);
1519		1888
1520	for (i = 1; i < items; ++i )	1889	for (i = 1; i < items; ++i )
1521	av_push (av, newSVsv (ST (i)));	1890	av_push (av, newSVsv (ST (i)));
1522		1891
1523	SvREFCNT_dec (grp->data);	1892	SvREFCNT_dec (grp->sv1);
1524	grp->data = (SV *)av;	1893	grp->sv1 = (SV *)av;
1525	}	1894	}
		1895
		1896	void
		1897	errno (aio_req grp, int errorno = errno)
		1898	CODE:
		1899	grp->errorno = errorno;
1526		1900
1527	void	1901	void
1528	limit (aio_req grp, int limit)	1902	limit (aio_req grp, int limit)
1529	CODE:	1903	CODE:
1530	grp->fd2 = limit;	1904	eio_grp_limit (grp, limit);
1531	aio_grp_feed (grp);
1532		1905
1533	void	1906	void
1534	feed (aio_req grp, SV *callback=&PL_sv_undef)	1907	feed (aio_req grp, SV *callback=&PL_sv_undef)
1535	CODE:	1908	CODE:
1536	{	1909	{
1537	SvREFCNT_dec (grp->fh2);	1910	SvREFCNT_dec (grp->sv2);
1538	grp->fh2 = newSVsv (callback);	1911	grp->sv2 = newSVsv (callback);
		1912	grp->feed = aio_grp_feed;
1539		1913
1540	if (grp->fd2 <= 0)	1914	if (grp->int2 <= 0)
1541	grp->fd2 = 2;	1915	grp->int2 = 2;
1542		1916
1543	aio_grp_feed (grp);	1917	eio_grp_limit (grp, grp->int2);
1544	}	1918	}
1545		1919

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