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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.73 by root, Tue Oct 24 21:26:30 2006 UTC vs.
Revision 1.187 by root, Sat Jul 16 16:46:10 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>	21	# include <sys/mman.h>
35	# elif __freebsd	22	#endif
36	# include <sys/socket.h>	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	# define EIO_STRUCT_DIRENT Direntry_t
		36	# undef malloc
		37	# undef free
		38
		39	// perl overrides all those nice win32 functions
		40	# undef open
		41	# undef read
		42	# undef write
		43	# undef send
		44	# undef recv
		45	# undef lstat
		46	# undef truncate
		47	# undef ftruncate
		48	# undef open
		49	# undef link
		50	# undef close
		51	# undef unlink
		52	# undef mkdir
		53	# undef rmdir
		54	# undef rename
		55	# undef lseek
		56	# undef opendir
		57	# undef readdir
		58	# undef closedir
		59	# undef chmod
		60	# undef fchmod
		61
		62	# define opendir(fd) EIO_ERRNO (ENOSYS, 0)
		63	# define readdir(fd) EIO_ENOSYS ()
		64	# define closedir(fd) EIO_ENOSYS ()
		65
		66	#else
		67
37	# include <sys/uio.h>	68	# include <sys/time.h>
38	# elif __hpux
39	# include <sys/socket.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73
		74	#endif
		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
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
		87	#endif
		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	typedef SV SV8; /* byte-sv, used for argument-checking */
		103	typedef int aio_rfd; /* read file desriptor */
		104	typedef int aio_wfd; /* write file descriptor */
		105
		106	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		107
		108	#define EIO_REQ_MEMBERS \
		109	SV *callback; \
		110	SV *sv1, *sv2; \
		111	STRLEN stroffset; \
		112	SV *self;
		113
		114	#define EIO_NO_WRAPPERS 1
		115
		116	#include "libeio/config.h"
		117	#include "libeio/eio.h"
		118
		119	/* Linux/others */
		120	#ifndef O_ASYNC
		121	# define O_ASYNC 0
		122	#endif
		123	#ifndef O_DIRECT
		124	# define O_DIRECT 0
		125	#endif
		126	#ifndef O_NOATIME
		127	# define O_NOATIME 0
		128	#endif
		129
		130	/* POSIX */
		131	#ifndef O_CLOEXEC
		132	# define O_CLOEXEC 0
		133	#endif
		134	#ifndef O_NOFOLLOW
		135	# define O_NOFOLLOW 0
		136	#endif
		137	#ifndef O_NOCTTY
		138	# define O_NOCTTY 0
		139	#endif
		140	#ifndef O_NONBLOCK
		141	# define O_NONBLOCK 0
		142	#endif
		143	#ifndef O_EXEC
		144	# define O_EXEC 0
		145	#endif
		146	#ifndef O_SEARCH
		147	# define O_SEARCH 0
		148	#endif
		149	#ifndef O_DIRECTORY
		150	# define O_DIRECTORY 0
		151	#endif
		152	#ifndef O_DSYNC
		153	# define O_DSYNC 0
		154	#endif
		155	#ifndef O_RSYNC
		156	# define O_RSYNC 0
		157	#endif
		158	#ifndef O_SYNC
		159	# define O_SYNC 0
		160	#endif
		161	#ifndef O_TTY_INIT
		162	# define O_TTY_INIT 0
		163	#endif
		164
		165	#ifndef POSIX_FADV_NORMAL
		166	# define POSIX_FADV_NORMAL 0
		167	#endif
		168	#ifndef POSIX_FADV_SEQUENTIAL
		169	# define POSIX_FADV_SEQUENTIAL 0
		170	#endif
		171	#ifndef POSIX_FADV_RANDOM
		172	# define POSIX_FADV_RANDOM 0
		173	#endif
		174	#ifndef POSIX_FADV_NOREUSE
		175	# define POSIX_FADV_NOREUSE 0
		176	#endif
		177	#ifndef POSIX_FADV_WILLNEED
		178	# define POSIX_FADV_WILLNEED 0
		179	#endif
		180	#ifndef POSIX_FADV_DONTNEED
		181	# define POSIX_FADV_DONTNEED 0
		182	#endif
		183
		184	#if !HAVE_POSIX_FADVISE
		185	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		186	#endif
		187
		188	#ifndef POSIX_MADV_NORMAL
		189	# define POSIX_MADV_NORMAL 0
		190	#endif
		191	#ifndef POSIX_MADV_SEQUENTIAL
		192	# define POSIX_MADV_SEQUENTIAL 0
		193	#endif
		194	#ifndef POSIX_MADV_RANDOM
		195	# define POSIX_MADV_RANDOM 0
		196	#endif
		197	#ifndef POSIX_MADV_WILLNEED
		198	# define POSIX_MADV_WILLNEED 0
		199	#endif
		200	#ifndef POSIX_MADV_DONTNEED
		201	# define POSIX_MADV_DONTNEED 0
		202	#endif
		203
		204	#if !HAVE_POSIX_MADVISE
		205	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		206	#endif
		207
		208	#ifndef PROT_NONE
		209	# define PROT_NONE 0
		210	#endif
		211	#ifndef PROT_READ
		212	# define PROT_READ 0
		213	#endif
		214	#ifndef PROT_WRITE
		215	# define PROT_READ 0
		216	#endif
		217	#ifndef PROT_EXEC
		218	# define PROT_EXEC 0
		219	#endif
		220
		221	#ifndef ST_RDONLY
		222	# define ST_RDONLY 0
		223	#endif
		224	#ifndef ST_NOSUID
		225	# define ST_NOSUID 0
		226	#endif
		227	#ifndef ST_NODEV
		228	# define ST_NODEV 0
		229	#endif
		230	#ifndef ST_NOEXEC
		231	# define ST_NOEXEC 0
		232	#endif
		233	#ifndef ST_SYNCHRONOUS
		234	# define ST_SYNCHRONOUS 0
		235	#endif
		236	#ifndef ST_MANDLOCK
		237	# define ST_MANDLOCK 0
		238	#endif
		239	#ifndef ST_WRITE
		240	# define ST_WRITE 0
		241	#endif
		242	#ifndef ST_APPEND
		243	# define ST_APPEND 0
		244	#endif
		245	#ifndef ST_IMMUTABLE
		246	# define ST_IMMUTABLE 0
		247	#endif
		248	#ifndef ST_NOATIME
		249	# define ST_NOATIME 0
		250	#endif
		251	#ifndef ST_NODIRATIME
		252	# define ST_NODIRATIME 0
		253	#endif
		254	#ifndef ST_RELATIME
		255	# define ST_RELATIME 0
		256	#endif
		257
		258	#ifndef S_IFIFO
		259	# define S_IFIFO 0
		260	#endif
		261	#ifndef S_IFCHR
		262	# define S_IFCHR 0
		263	#endif
		264	#ifndef S_IFBLK
		265	# define S_IFBLK 0
		266	#endif
		267	#ifndef S_IFLNK
		268	# define S_IFLNK 0
		269	#endif
		270	#ifndef S_IFREG
		271	# define S_IFREG 0
		272	#endif
		273	#ifndef S_IFDIR
		274	# define S_IFDIR 0
		275	#endif
		276	#ifndef S_IFWHT
		277	# define S_IFWHT 0
		278	#endif
		279	#ifndef S_IFSOCK
		280	# define S_IFSOCK 0
		281	#endif
		282
		283	#ifndef MAP_ANONYMOUS
		284	# ifdef MAP_ANON
		285	# define MAP_ANONYMOUS MAP_ANON
42	# else	286	# else
43	# error sendfile support requested but not available	287	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	288	# endif
45	#endif	289	#endif
46		290	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	291	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	292	#endif
51		293	#ifndef MAP_LOCKED
52	#if __ia64	294	# 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	295	#endif
		296	#ifndef MAP_NORESERVE
		297	# define MAP_NORESERVE 0
		298	#endif
		299	#ifndef MAP_POPULATE
		300	# define MAP_POPULATE 0
		301	#endif
		302	#ifndef MAP_NONBLOCK
		303	# define MAP_NONBLOCK 0
		304	#endif
59		305
60	/* buffer size for various temporary buffers */	306	#ifndef makedev
61	#define AIO_BUFSIZE 65536	307	# define makedev(maj,min) (((maj) << 8) | (min))
		308	#endif
		309	#ifndef major
		310	# define major(dev) ((dev) >> 8)
		311	#endif
		312	#ifndef minor
		313	# define minor(dev) ((dev) & 0xff)
		314	#endif
62		315
63	#define dBUF \	316	#ifndef PAGESIZE
64	char *aio_buf; \	317	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	LOCK (wrklock); \	318	#endif
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	319
67	UNLOCK (wrklock); \	320	static int req_invoke (eio_req *req);
68	if (!aio_buf) \	321	#define EIO_FINISH(req) req_invoke (req)
69	return -1;	322	static void req_destroy (eio_req *grp);
		323	#define EIO_DESTROY(req) req_destroy (req)
70		324
71	enum {	325	enum {
72	REQ_QUIT,	326	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	};	327	};
84		328
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	329	#include "libeio/eio.c"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		330
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;	331	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	332	typedef eio_req *aio_req_ornot;
119		333
120	enum {	334	static SV *on_next_submit;
121	PRI_MIN = -4,	335	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;	336	static int max_outstanding;
134	static int respipe [2];
135		337
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	338	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		339
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);	340	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	341	static void req_cancel (aio_req req);
246		342
		343	static void want_poll (void)
		344	{
		345	/* write a dummy byte to the pipe so fh becomes ready */
		346	s_epipe_signal (&respipe);
		347	}
		348
		349	static void done_poll (void)
		350	{
		351	/* read any signals sent by the worker threads */
		352	s_epipe_drain (&respipe);
		353	}
		354
247	/* must be called at most once */	355	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	356	static SV *req_sv (aio_req req, HV *stash)
249	{	357	{
250	if (!req->self)	358	if (!req->self)
251	{	359	{
252	req->self = (SV *)newHV ();	360	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	361	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	362	}
255		363
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	364	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	365	}
258		366
259	static aio_req SvAIO_REQ (SV *sv)	367	static aio_req SvAIO_REQ (SV *sv)
260	{	368	{
261	MAGIC *mg;	369	MAGIC *mg;
262		370
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	371	if (!SvROK (sv)
		372	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		373	&& SvSTASH (SvRV (sv)) != aio_req_stash
		374	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	375	croak ("object of class IO::AIO::REQ expected");
265		376
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	377	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		378
268	return mg ? (aio_req)mg->mg_ptr : 0;	379	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	380	}
270		381
271	static void aio_grp_feed (aio_req grp)	382	static void aio_grp_feed (aio_req grp)
272	{	383	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	384	if (grp->sv2 && SvOK (grp->sv2))
274	{	385	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	386	dSP;
280		387
281	ENTER;	388	ENTER;
282	SAVETMPS;	389	SAVETMPS;
283	PUSHMARK (SP);	390	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	391	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	392	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	393	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	394	SPAGAIN;
288	FREETMPS;	395	FREETMPS;
289	LEAVE;	396	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	}	397	}
300	}	398	}
301		399
302	static void aio_grp_dec (aio_req grp)	400	static void req_submit (eio_req *req)
303	{	401	{
304	--grp->length;	402	eio_submit (req);
305		403
306	/* call feeder, if applicable */	404	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	405	{
312	req_invoke (grp);	406	dSP;
313	req_free (grp);	407	SV *cb = sv_2mortal (on_next_submit);
		408
		409	on_next_submit = 0;
		410
		411	PUSHMARK (SP);
		412	PUTBACK;
		413	call_sv (cb, G_DISCARD | G_EVAL);
314	}	414	}
315	}	415	}
316		416
317	static void poll_wait ()	417	static int req_invoke (eio_req *req)
318	{	418	{
319	fd_set rfd;	419	if (req->flags & FLAG_SV2_RO_OFF)
		420	SvREADONLY_off (req->sv2);
320		421
321	while (nreqs)	422	if (!EIO_CANCELLED (req) && req->callback)
322	{	423	{
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;	424	dSP;
345		425	static SV *sv_result_cache; /* caches the result integer SV */
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	426	SV *sv_result;
347	{
348	errno = req->errorno;
349		427
350	ENTER;	428	ENTER;
351	SAVETMPS;	429	SAVETMPS;
352	PUSHMARK (SP);	430	PUSHMARK (SP);
353	EXTEND (SP, 1);	431	EXTEND (SP, 1);
354		432
		433	/* do not recreate the result IV from scratch each time */
		434	if (expect_true (sv_result_cache))
		435	{
		436	sv_result = sv_result_cache; sv_result_cache = 0;
		437	SvIV_set (sv_result, req->result);
		438	SvIOK_only (sv_result);
		439	}
		440	else
		441	{
		442	sv_result = newSViv (req->result);
		443	SvREADONLY_on (sv_result);
		444	}
		445
355	switch (req->type)	446	switch (req->type)
356	{	447	{
357	case REQ_READDIR:	448	case EIO_READDIR:
358	{	449	{
359	SV *rv = &PL_sv_undef;	450	SV *rv = &PL_sv_undef;
360		451
361	if (req->result >= 0)	452	if (req->result >= 0)
362	{	453	{
363	int i;	454	int i;
364	char *buf = req->data2ptr;	455	char *names = (char *)req->ptr2;
		456	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	457	AV *av = newAV ();
366		458
367	av_extend (av, req->result - 1);	459	av_extend (av, req->result - 1);
368		460
369	for (i = 0; i < req->result; ++i)	461	for (i = 0; i < req->result; ++i)
370	{	462	{
371	SV *sv = newSVpv (buf, 0);	463	if (req->int1 & EIO_READDIR_DENTS)
		464	{
		465	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		466
		467	if (req->int1 & EIO_READDIR_CUSTOM2)
		468	{
		469	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		470	AV *avent = newAV ();
		471
		472	av_extend (avent, 2);
		473
		474	if (!sv_type [ent->type])
		475	{
		476	sv_type [ent->type] = newSViv (ent->type);
		477	SvREADONLY_on (sv_type [ent->type]);
		478	}
		479
		480	av_store (avent, 0, namesv);
		481	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		482	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		483
		484	av_store (av, i, newRV_noinc ((SV *)avent));
		485	}
		486	else
373	av_store (av, i, sv);	487	av_store (av, i, namesv);
		488
		489	++ent;
		490	}
		491	else
		492	{
		493	SV *name = newSVpv (names, 0);
		494	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	495	names += SvCUR (name) + 1;
		496	}
375	}	497	}
376		498
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	499	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	500	}
379		501
380	PUSHs (rv);	502	PUSHs (rv);
		503
		504	if (req->int1 & EIO_READDIR_CUSTOM1)
		505	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	506	}
382	break;	507	break;
383		508
384	case REQ_OPEN:	509	case EIO_OPEN:
385	{	510	{
386	/* convert fd to fh */	511	/* convert fd to fh */
387	SV *fh;	512	SV *fh = &PL_sv_undef;
388		513
389	PUSHs (sv_2mortal (newSViv (req->result)));	514	if (req->result >= 0)
390	PUTBACK;	515	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	516	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	517	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		518	char sym [64];
		519	int symlen;
		520
		521	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		522	gv_init (gv, aio_stash, sym, symlen, 0);
393		523
394	fh = SvREFCNT_inc (POPs);	524	symlen = snprintf (
		525	sym,
		526	sizeof (sym),
		527	"%s&=%d",
		528	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		529	(int)req->result
		530	);
395		531
		532	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		533	fh = (SV *)gv;
		534	}
		535
396	PUSHMARK (SP);	536	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	537	}
399	break;	538	break;
400		539
		540	case EIO_STATVFS:
		541	case EIO_FSTATVFS:
		542	{
		543	SV *rv = &PL_sv_undef;
		544
		545	#ifndef _WIN32
		546	if (req->result >= 0)
		547	{
		548	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		549	HV *hv = newHV ();
		550
		551	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		552
		553	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		554	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		555	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		556	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		557	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		558	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		559	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		560	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		561	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		562	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		563	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		564	}
		565	#endif
		566
		567	PUSHs (rv);
		568	}
		569
		570	break;
		571
401	case REQ_GROUP:	572	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	573	req->int1 = 2; /* mark group as finished */
403		574
404	if (req->data)	575	if (req->sv1)
405	{	576	{
406	int i;	577	int i;
407	AV *av = (AV *)req->data;	578	AV *av = (AV *)req->sv1;
408		579
409	EXTEND (SP, AvFILL (av) + 1);	580	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	581	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	582	PUSHs (*av_fetch (av, i, 0));
412	}	583	}
413	break;	584	break;
414		585
415	case REQ_NOP:	586	case EIO_NOP:
416	case REQ_BUSY:	587	case EIO_BUSY:
417	break;	588	break;
418		589
		590	case EIO_READLINK:
		591	case EIO_REALPATH:
		592	if (req->result > 0)
		593	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		594	break;
		595
		596	case EIO_STAT:
		597	case EIO_LSTAT:
		598	case EIO_FSTAT:
		599	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		600	PL_laststatval = req->result;
		601	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		602	PUSHs (sv_result);
		603	break;
		604
		605	case EIO_READ:
		606	{
		607	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		608	*SvEND (req->sv2) = 0;
		609	SvPOK_only (req->sv2);
		610	SvSETMAGIC (req->sv2);
		611	PUSHs (sv_result);
		612	}
		613	break;
		614
		615	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		616	if (req->result > 0)
		617	SvIV_set (sv_result, 0);
		618	/* FALLTHROUGH */
		619
419	default:	620	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	621	PUSHs (sv_result);
421	break;	622	break;
422	}	623	}
423		624
		625	errno = req->errorno;
424		626
425	PUTBACK;	627	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	628	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	629	SPAGAIN;
		630
		631	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		632	SvREFCNT_dec (sv_result);
		633	else
		634	sv_result_cache = sv_result;
428		635
429	FREETMPS;	636	FREETMPS;
430	LEAVE;	637	LEAVE;
		638
		639	PUTBACK;
431	}	640	}
432		641
433	if (req->grp)	642	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	}	643	}
453		644
454	static void req_free (aio_req req)	645	static void req_destroy (aio_req req)
455	{	646	{
456	if (req->self)	647	if (req->self)
457	{	648	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	649	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	650	SvREFCNT_dec (req->self);
460	}	651	}
461		652
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	653	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	654	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	655	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470		656
471	Safefree (req);	657	Safefree (req);
472	}	658	}
473		659
474	static void req_cancel_subs (aio_req grp)	660	static void req_cancel_subs (aio_req grp)
475	{	661	{
476	aio_req sub;	662	aio_req sub;
477		663
478	if (grp->type != REQ_GROUP)	664	if (grp->type != EIO_GROUP)
479	return;	665	return;
480		666
481	SvREFCNT_dec (grp->fh2);	667	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	668	grp->sv2 = 0;
483		669
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	670	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	671	}
487		672
488	static void req_cancel (aio_req req)	673	static void create_respipe (void)
489	{	674	{
490	req->flags |= FLAG_CANCELLED;	675	if (s_epipe_renew (&respipe))
491		676	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	677	}
494		678
		679	static void poll_wait (void)
		680	{
		681	while (eio_nreqs ())
		682	{
		683	int size;
		684
		685	X_LOCK (reslock);
		686	size = res_queue.size;
		687	X_UNLOCK (reslock);
		688
		689	if (size)
		690	return;
		691
		692	etp_maybe_start_thread ();
		693
		694	s_epipe_wait (&respipe);
		695	}
		696	}
		697
495	static int poll_cb ()	698	static int poll_cb (void)
496	{	699	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)	700	for (;;)
503	{	701	{
504	LOCK (reslock);	702	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		703
507	if (req)	704	if (res > 0)
508	{
509	if (!res_queue.size)
510	{
511	/* read any signals sent by the worker threads */
512	char buf [32];
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}
516	}
517
518	UNLOCK (reslock);
519
520	if (!req)
521	break;	705	croak (0);
522		706
523	--nreqs;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
		708	return res;
524		709
525	if (req->type == REQ_QUIT)	710	poll_wait ();
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}
532	else
533	{
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	}	711	}
554
555	return count;
556	}	712	}
557		713
558	static void *aio_proc(void *arg);
559
560	static void start_thread (void)	714	static void atfork_child (void)
561	{	715	{
562	sigset_t fullsigset, oldsigset;	716	create_respipe ();
563	pthread_attr_t attr;
564
565	worker *wrk = calloc (1, sizeof (worker));
566
567	if (!wrk)
568	croak ("unable to allocate worker thread data");
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	{
581	wrk->prev = &wrk_first;
582	wrk->next = wrk_first.next;
583	wrk_first.next->prev = wrk;
584	wrk_first.next = wrk;
585	started++;
586	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}
593
594	static void req_send (aio_req req)
595	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598
599	++nreqs;
600
601	LOCK (reqlock);
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605
606	if (nreqs > max_outstanding)
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	{
620	aio_req req;
621
622	Newz (0, req, 1, aio_cb);
623
624	req->type = REQ_QUIT;
625	req->pri = PRI_MAX + PRI_BIAS;
626
627	req_send (req);
628	}
629
630	static void min_parallel (int nthreads)
631	{
632	if (wanted < nthreads)
633	wanted = nthreads;
634	}
635
636	static void max_parallel (int nthreads)
637	{
638	int cur = started;
639
640	if (wanted > nthreads)
641	wanted = nthreads;
642
643	while (cur > wanted)
644	{
645	end_thread ();
646	cur--;
647	}
648
649	while (started > wanted)
650	{
651	poll_wait ();
652	poll_cb ();
653	}
654	}
655
656	static void create_pipe ()
657	{
658	if (pipe (respipe))
659	croak ("unable to initialize result pipe");
660
661	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
662	croak ("cannot set result pipe to nonblocking mode");
663
664	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
665	croak ("cannot set result pipe to nonblocking mode");
666	}	717	}
667		718
668	/*****************************************************************************/	719	/*****************************************************************************/
669	/* work around various missing functions */
670		720
671	#if !HAVE_PREADWRITE	721	#if !_POSIX_MAPPED_FILES
672	# define pread aio_pread	722	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
673	# define pwrite aio_pwrite	723	# define munmap(addr,length) (errno = ENOSYS, -1)
674
675	/*
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
682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
683	{
684	ssize_t res;
685	off_t ooffset;
686
687	LOCK (preadwritelock);
688	ooffset = lseek (fd, 0, SEEK_CUR);
689	lseek (fd, offset, SEEK_SET);
690	res = read (fd, buf, count);
691	lseek (fd, ooffset, SEEK_SET);
692	UNLOCK (preadwritelock);
693
694	return res;
695	}
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	}
792
793	# elif __hpux
794	res = sendfile (ofd, ifd, offset, count, 0, 0);
795
796	# elif __solaris
797	{
798	struct sendfilevec vec;
799	size_t sbytes;
800
801	vec.sfv_fd = ifd;
802	vec.sfv_flag = 0;
803	vec.sfv_off = offset;
804	vec.sfv_len = count;
805
806	res = sendfilev (ofd, &vec, 1, &sbytes);
807
808	if (res < 0 && sbytes)
809	res = sbytes;
810	}
811
812	# endif	724	#endif
813	#else
814	res = -1;
815	errno = ENOSYS;
816	#endif
817		725
818	if (res < 0	726	#if !_POSIX_MEMORY_PROTECTION
819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	727	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
820	#if __solaris	728	# define PROT_NONE 0
821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	729	# define PROT_WRITE 0
		730	# define MAP_PRIVATE 0
		731	# define MAP_SHARED 0
		732	# define MAP_FIXED 0
822	#endif	733	#endif
823	)
824	)
825	{
826	/* emulate sendfile. this is a major pain in the ass */
827	dBUF;
828		734
829	res = 0;	735	#define MMAP_MAGIC PERL_MAGIC_ext
830		736
831	while (count)	737	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
832	{	738	{
833	ssize_t cnt;	739	int old_errno = errno;
834		740	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	741	errno = old_errno;
836		742
837	if (cnt <= 0)	743	mg->mg_obj = 0; /* just in case */
838	{
839	if (cnt && !res) res = -1;
840	break;
841	}
842		744
843	cnt = write (ofd, aio_buf, cnt);	745	SvREADONLY_off (sv);
844		746
845	if (cnt <= 0)	747	if (SvPVX (sv) != mg->mg_ptr)
846	{	748	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
847	if (cnt && !res) res = -1;
848	break;
849	}
850		749
851	offset += cnt;	750	SvCUR_set (sv, 0);
852	res += cnt;	751	SvPVX (sv) = 0;
853	count -= cnt;	752	SvOK_off (sv);
854	}
855	}
856		753
857	return res;	754	return 0;
858	}	755	}
859		756
860	/* read a full directory */	757	static MGVTBL mmap_vtbl = {
861	static void scandir_ (aio_req req, worker *self)	758	0, 0, 0, 0, mmap_free
862	{	759	};
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	}
914	}
915
916	if (errno)
917	res = -1;
918
919	req->result = res;
920	}
921		760
922	/*****************************************************************************/	761	/*****************************************************************************/
923		762
924	static void *aio_proc (void *thr_arg)	763	static SV * get_cb (SV *cb_sv)
925	{	764	{
926	aio_req req;	765	SvGETMAGIC (cb_sv);
927	int type;	766	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
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	}	767	}
1074		768
1075	#define dREQ \	769	#define dREQ \
		770	SV *cb_cv; \
1076	aio_req req; \	771	aio_req req; \
1077	int req_pri = next_pri; \	772	int req_pri = next_pri; \
1078	next_pri = DEFAULT_PRI + PRI_BIAS; \	773	next_pri = EIO_PRI_DEFAULT; \
1079	\	774	\
1080	if (SvOK (callback) && !SvROK (callback)) \	775	cb_cv = get_cb (callback); \
1081	croak ("callback must be undef or of reference type"); \
1082	\	776	\
1083	Newz (0, req, 1, aio_cb); \	777	Newz (0, req, 1, eio_req); \
1084	if (!req) \	778	if (!req) \
1085	croak ("out of memory during aio_req allocation"); \	779	croak ("out of memory during eio_req allocation"); \
1086	\	780	\
1087	req->callback = newSVsv (callback); \	781	req->callback = SvREFCNT_inc (cb_cv); \
1088	req->pri = req_pri	782	req->pri = req_pri
1089		783
1090	#define REQ_SEND \	784	#define REQ_SEND \
		785	PUTBACK; \
1091	req_send (req); \	786	req_submit (req); \
		787	SPAGAIN; \
1092	\	788	\
1093	if (GIMME_V != G_VOID) \	789	if (GIMME_V != G_VOID) \
1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));	790	XPUSHs (req_sv (req, aio_req_stash));
1095		791
1096	MODULE = IO::AIO PACKAGE = IO::AIO	792	MODULE = IO::AIO PACKAGE = IO::AIO
1097		793
1098	PROTOTYPES: ENABLE	794	PROTOTYPES: ENABLE
1099		795
1100	BOOT:	796	BOOT:
1101	{	797	{
		798	static const struct {
		799	const char *name;
		800	IV iv;
		801	} *civ, const_iv[] = {
		802	# define const_niv(name, value) { # name, (IV) value },
		803	# define const_iv(name) { # name, (IV) name },
		804	# define const_eio(name) { # name, (IV) EIO_ ## name },
		805	const_iv (EXDEV)
		806	const_iv (ENOSYS)
		807	const_iv (O_RDONLY)
		808	const_iv (O_WRONLY)
		809	const_iv (O_RDWR)
		810	const_iv (O_CREAT)
		811	const_iv (O_TRUNC)
		812	const_iv (O_EXCL)
		813	const_iv (O_APPEND)
		814
		815	const_iv (O_ASYNC)
		816	const_iv (O_DIRECT)
		817	const_iv (O_NOATIME)
		818
		819	const_iv (O_CLOEXEC)
		820	const_iv (O_NOCTTY)
		821	const_iv (O_NOFOLLOW)
		822	const_iv (O_NONBLOCK)
		823	const_iv (O_EXEC)
		824	const_iv (O_SEARCH)
		825	const_iv (O_DIRECTORY)
		826	const_iv (O_DSYNC)
		827	const_iv (O_RSYNC)
		828	const_iv (O_SYNC)
		829	const_iv (O_TTY_INIT)
		830
		831	const_iv (S_IFIFO)
		832	const_iv (S_IFCHR)
		833	const_iv (S_IFBLK)
		834	const_iv (S_IFLNK)
		835	const_iv (S_IFREG)
		836	const_iv (S_IFDIR)
		837	const_iv (S_IFWHT)
		838	const_iv (S_IFSOCK)
		839	const_iv (S_IFMT)
		840
		841	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		842	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		843	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		844	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		845	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		846	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		847
		848	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		849	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		850	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		851	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		852	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		853
		854	const_iv (ST_RDONLY)
		855	const_iv (ST_NOSUID)
		856	const_iv (ST_NODEV)
		857	const_iv (ST_NOEXEC)
		858	const_iv (ST_SYNCHRONOUS)
		859	const_iv (ST_MANDLOCK)
		860	const_iv (ST_WRITE)
		861	const_iv (ST_APPEND)
		862	const_iv (ST_IMMUTABLE)
		863	const_iv (ST_NOATIME)
		864	const_iv (ST_NODIRATIME)
		865	const_iv (ST_RELATIME)
		866
		867	const_iv (PROT_NONE)
		868	const_iv (PROT_EXEC)
		869	const_iv (PROT_READ)
		870	const_iv (PROT_WRITE)
		871
		872	/*const_iv (MAP_FIXED)*/
		873	const_iv (MAP_PRIVATE)
		874	const_iv (MAP_SHARED)
		875	const_iv (MAP_ANONYMOUS)
		876
		877	/* linuxish */
		878	const_iv (MAP_HUGETLB)
		879	const_iv (MAP_LOCKED)
		880	const_iv (MAP_NORESERVE)
		881	const_iv (MAP_POPULATE)
		882	const_iv (MAP_NONBLOCK)
		883
		884	const_eio (MCL_FUTURE)
		885	const_eio (MCL_CURRENT)
		886
		887	const_eio (MS_ASYNC)
		888	const_eio (MS_INVALIDATE)
		889	const_eio (MS_SYNC)
		890
		891	const_eio (MT_MODIFY)
		892
		893	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		894	const_eio (SYNC_FILE_RANGE_WRITE)
		895	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		896
		897	const_eio (FALLOC_FL_KEEP_SIZE)
		898
		899	const_eio (READDIR_DENTS)
		900	const_eio (READDIR_DIRS_FIRST)
		901	const_eio (READDIR_STAT_ORDER)
		902	const_eio (READDIR_FOUND_UNKNOWN)
		903
		904	const_eio (DT_UNKNOWN)
		905	const_eio (DT_FIFO)
		906	const_eio (DT_CHR)
		907	const_eio (DT_DIR)
		908	const_eio (DT_BLK)
		909	const_eio (DT_REG)
		910	const_eio (DT_LNK)
		911	const_eio (DT_SOCK)
		912	const_eio (DT_WHT)
		913	};
		914
1102	HV *stash = gv_stashpv ("IO::AIO", 1);	915	aio_stash = gv_stashpv ("IO::AIO" , 1);
1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	916	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	917	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1106		918
		919	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		920	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		921
		922	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		923
1107	create_pipe ();	924	create_respipe ();
1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1109	}
1110		925
		926	if (eio_init (want_poll, done_poll) < 0)
		927	croak ("IO::AIO: unable to initialise eio library");
		928
		929	/* atfork child called in fifo order, so before eio's handler */
		930	X_THREAD_ATFORK (0, 0, atfork_child);
		931	}
		932
1111	void	933	void
1112	min_parallel (nthreads)	934	max_poll_reqs (unsigned int nreqs)
1113	int nthreads
1114	PROTOTYPE: $	935	PROTOTYPE: $
		936	CODE:
		937	eio_set_max_poll_reqs (nreqs);
1115		938
1116	void	939	void
1117	max_parallel (nthreads)	940	max_poll_time (double nseconds)
1118	int nthreads
1119	PROTOTYPE: $	941	PROTOTYPE: $
1120
1121	int
1122	max_outstanding (nreqs)
1123	int nreqs
1124	PROTOTYPE: $
1125	CODE:	942	CODE:
1126	RETVAL = max_outstanding;	943	eio_set_max_poll_time (nseconds);
		944
		945	void
		946	min_parallel (unsigned int nthreads)
		947	PROTOTYPE: $
		948	CODE:
		949	eio_set_min_parallel (nthreads);
		950
		951	void
		952	max_parallel (unsigned int nthreads)
		953	PROTOTYPE: $
		954	CODE:
		955	eio_set_max_parallel (nthreads);
		956
		957	void
		958	max_idle (unsigned int nthreads)
		959	PROTOTYPE: $
		960	CODE:
		961	eio_set_max_idle (nthreads);
		962
		963	void
		964	idle_timeout (unsigned int seconds)
		965	PROTOTYPE: $
		966	CODE:
		967	eio_set_idle_timeout (seconds);
		968
		969	void
		970	max_outstanding (unsigned int maxreqs)
		971	PROTOTYPE: $
		972	CODE:
1127	max_outstanding = nreqs;	973	max_outstanding = maxreqs;
1128		974
1129	void	975	void
1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	976	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1131	SV * pathname
1132	int flags
1133	int mode
1134	SV * callback
1135	PROTOTYPE: $$$;$
1136	PPCODE:	977	PPCODE:
1137	{	978	{
1138	dREQ;	979	dREQ;
1139		980
1140	req->type = REQ_OPEN;	981	req->type = EIO_OPEN;
1141	req->data = newSVsv (pathname);	982	req->sv1 = newSVsv (pathname);
1142	req->dataptr = SvPVbyte_nolen (req->data);	983	req->ptr1 = SvPVbyte_nolen (req->sv1);
1143	req->fd = flags;	984	req->int1 = flags;
1144	req->mode = mode;	985	req->int2 = mode;
1145		986
1146	REQ_SEND;	987	REQ_SEND;
1147	}	988	}
1148		989
1149	void	990	void
1150	aio_close (fh,callback=&PL_sv_undef)	991	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1151	SV * fh
1152	SV * callback
1153	PROTOTYPE: $;$
1154	ALIAS:	992	ALIAS:
1155	aio_close = REQ_CLOSE
1156	aio_fsync = REQ_FSYNC	993	aio_fsync = EIO_FSYNC
1157	aio_fdatasync = REQ_FDATASYNC	994	aio_fdatasync = EIO_FDATASYNC
1158	PPCODE:	995	PPCODE:
1159	{	996	{
		997	int fd = s_fileno_croak (fh, 0);
1160	dREQ;	998	dREQ;
1161		999
1162	req->type = ix;	1000	req->type = ix;
1163	req->fh = newSVsv (fh);	1001	req->sv1 = newSVsv (fh);
1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1002	req->int1 = fd;
1165		1003
1166	REQ_SEND (req);	1004	REQ_SEND (req);
1167	}	1005	}
1168		1006
1169	void	1007	void
		1008	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1009	PPCODE:
		1010	{
		1011	int fd = s_fileno_croak (fh, 0);
		1012	dREQ;
		1013
		1014	req->type = EIO_SYNC_FILE_RANGE;
		1015	req->sv1 = newSVsv (fh);
		1016	req->int1 = fd;
		1017	req->offs = offset;
		1018	req->size = nbytes;
		1019	req->int2 = flags;
		1020
		1021	REQ_SEND (req);
		1022	}
		1023
		1024	void
		1025	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1026	PPCODE:
		1027	{
		1028	int fd = s_fileno_croak (fh, 0);
		1029	dREQ;
		1030
		1031	req->type = EIO_FALLOCATE;
		1032	req->sv1 = newSVsv (fh);
		1033	req->int1 = fd;
		1034	req->int2 = mode;
		1035	req->offs = offset;
		1036	req->size = len;
		1037
		1038	REQ_SEND (req);
		1039	}
		1040
		1041	void
		1042	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1043	PPCODE:
		1044	{
		1045	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1046	int fd = s_fileno_croak (fh, 0);
		1047	dREQ;
		1048
		1049	if (expect_false (close_fd < 0))
		1050	{
		1051	#ifdef _WIN32
		1052	close_fd = _open_osfhandle (socket (AF_INET, SOCK_STREAM, 0), 0);
		1053	#else
		1054	int pipefd [2];
		1055
		1056	if (pipe (pipefd) < 0
		1057	|| close (pipefd [1]) < 0
		1058	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1059	abort (); /*D*/
		1060
		1061	close_fd = pipefd [0];
		1062	#endif
		1063	}
		1064
		1065	req->type = EIO_DUP2;
		1066	req->int1 = close_fd;
		1067	req->sv2 = newSVsv (fh);
		1068	req->int2 = fd;
		1069
		1070	REQ_SEND (req);
		1071	}
		1072
		1073	void
1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1074	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1171	SV * fh
1172	UV offset
1173	UV length
1174	SV * data
1175	UV dataoffset
1176	SV * callback
1177	ALIAS:	1075	ALIAS:
1178	aio_read = REQ_READ	1076	aio_read = EIO_READ
1179	aio_write = REQ_WRITE	1077	aio_write = EIO_WRITE
1180	PROTOTYPE: $$$$$;$
1181	PPCODE:	1078	PPCODE:
1182	{	1079	{
1183	aio_req req;
1184	STRLEN svlen;	1080	STRLEN svlen;
		1081	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1185	char *svptr = SvPVbyte (data, svlen);	1082	char *svptr = SvPVbyte (data, svlen);
1186		1083	UV len = SvUV (length);
1187	SvUPGRADE (data, SVt_PV);
1188	SvPOK_on (data);
1189		1084
1190	if (dataoffset < 0)	1085	if (dataoffset < 0)
1191	dataoffset += svlen;	1086	dataoffset += svlen;
1192		1087
1193	if (dataoffset < 0 || dataoffset > svlen)	1088	if (dataoffset < 0 || dataoffset > svlen)
1194	croak ("data offset outside of string");	1089	croak ("dataoffset outside of data scalar");
1195		1090
1196	if (ix == REQ_WRITE)	1091	if (ix == EIO_WRITE)
1197	{	1092	{
1198	/* write: check length and adjust. */	1093	/* write: check length and adjust. */
1199	if (length < 0 || length + dataoffset > svlen)	1094	if (!SvOK (length) || len + dataoffset > svlen)
1200	length = svlen - dataoffset;	1095	len = svlen - dataoffset;
1201	}	1096	}
1202	else	1097	else
1203	{	1098	{
1204	/* read: grow scalar as necessary */	1099	/* read: check type and grow scalar as necessary */
		1100	SvUPGRADE (data, SVt_PV);
1205	svptr = SvGROW (data, length + dataoffset);	1101	svptr = SvGROW (data, len + dataoffset + 1);
1206	}	1102	}
1207
1208	if (length < 0)
1209	croak ("length must not be negative");
1210		1103
1211	{	1104	{
1212	dREQ;	1105	dREQ;
1213		1106
1214	req->type = ix;	1107	req->type = ix;
1215	req->fh = newSVsv (fh);	1108	req->sv1 = newSVsv (fh);
1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1109	req->int1 = fd;
1217	: IoOFP (sv_2io (fh)));	1110	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218	req->offset = offset;	1111	req->size = len;
1219	req->length = length;
1220	req->data = SvREFCNT_inc (data);	1112	req->sv2 = SvREFCNT_inc (data);
1221	req->dataptr = (char *)svptr + dataoffset;	1113	req->ptr2 = (char *)svptr + dataoffset;
		1114	req->stroffset = dataoffset;
1222		1115
1223	if (!SvREADONLY (data))	1116	if (!SvREADONLY (data))
1224	{	1117	{
1225	SvREADONLY_on (data);	1118	SvREADONLY_on (data);
1226	req->data2ptr = (void *)data;	1119	req->flags |= FLAG_SV2_RO_OFF;
1227	}	1120	}
1228		1121
1229	REQ_SEND;	1122	REQ_SEND;
1230	}	1123	}
1231	}	1124	}
1232		1125
1233	void	1126	void
1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1127	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1235	SV * out_fh	1128	ALIAS:
1236	SV * in_fh	1129	aio_readlink = EIO_READLINK
1237	UV in_offset	1130	aio_realpath = EIO_REALPATH
1238	UV length
1239	SV * callback
1240	PROTOTYPE: $$$$;$
1241	PPCODE:	1131	PPCODE:
1242	{	1132	{
		1133	SV *data;
		1134	dREQ;
		1135
		1136	req->type = ix;
		1137	req->sv1 = newSVsv (path);
		1138	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1139
		1140	REQ_SEND;
		1141	}
		1142
		1143	void
		1144	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1145	PPCODE:
		1146	{
		1147	int ifd = s_fileno_croak (in_fh , 0);
		1148	int ofd = s_fileno_croak (out_fh, 1);
1243	dREQ;	1149	dREQ;
1244		1150
1245	req->type = REQ_SENDFILE;	1151	req->type = EIO_SENDFILE;
1246	req->fh = newSVsv (out_fh);	1152	req->sv1 = newSVsv (out_fh);
1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1153	req->int1 = ofd;
1248	req->fh2 = newSVsv (in_fh);	1154	req->sv2 = newSVsv (in_fh);
1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1155	req->int2 = ifd;
1250	req->offset = in_offset;	1156	req->offs = in_offset;
1251	req->length = length;	1157	req->size = length;
1252		1158
1253	REQ_SEND;	1159	REQ_SEND;
1254	}	1160	}
1255		1161
1256	void	1162	void
1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1163	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1258	SV * fh
1259	UV offset
1260	IV length
1261	SV * callback
1262	PROTOTYPE: $$$;$
1263	PPCODE:	1164	PPCODE:
1264	{	1165	{
		1166	int fd = s_fileno_croak (fh, 0);
1265	dREQ;	1167	dREQ;
1266		1168
1267	req->type = REQ_READAHEAD;	1169	req->type = EIO_READAHEAD;
1268	req->fh = newSVsv (fh);	1170	req->sv1 = newSVsv (fh);
1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1171	req->int1 = fd;
1270	req->offset = offset;	1172	req->offs = offset;
1271	req->length = length;	1173	req->size = length;
1272		1174
1273	REQ_SEND;	1175	REQ_SEND;
1274	}	1176	}
1275		1177
1276	void	1178	void
1277	aio_stat (fh_or_path,callback=&PL_sv_undef)	1179	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1278	SV * fh_or_path
1279	SV * callback
1280	ALIAS:	1180	ALIAS:
1281	aio_stat = REQ_STAT	1181	aio_stat = EIO_STAT
1282	aio_lstat = REQ_LSTAT	1182	aio_lstat = EIO_LSTAT
		1183	aio_statvfs = EIO_STATVFS
1283	PPCODE:	1184	PPCODE:
1284	{	1185	{
1285	dREQ;	1186	dREQ;
1286		1187
1287	New (0, req->statdata, 1, Stat_t);	1188	req->sv1 = newSVsv (fh_or_path);
1288	if (!req->statdata)
1289	{
1290	req_free (req);
1291	croak ("out of memory during aio_req->statdata allocation");
1292	}
1293		1189
1294	if (SvPOK (fh_or_path))	1190	if (SvPOK (req->sv1))
1295	{	1191	{
1296	req->type = ix;	1192	req->type = ix;
1297	req->data = newSVsv (fh_or_path);
1298	req->dataptr = SvPVbyte_nolen (req->data);	1193	req->ptr1 = SvPVbyte_nolen (req->sv1);
1299	}	1194	}
1300	else	1195	else
1301	{	1196	{
1302	req->type = REQ_FSTAT;	1197	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1303	req->fh = newSVsv (fh_or_path);
1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1198	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1305	}	1199	}
1306		1200
1307	REQ_SEND;	1201	REQ_SEND;
1308	}	1202	}
1309		1203
		1204	UV
		1205	major (UV dev)
		1206	ALIAS:
		1207	minor = 1
		1208	CODE:
		1209	RETVAL = ix ? major (dev) : minor (dev);
		1210	OUTPUT:
		1211	RETVAL
		1212
		1213	UV
		1214	makedev (UV maj, UV min)
		1215	CODE:
		1216	RETVAL = makedev (maj, min);
		1217	OUTPUT:
		1218	RETVAL
		1219
1310	void	1220	void
		1221	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1222	PPCODE:
		1223	{
		1224	dREQ;
		1225
		1226	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1227	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1228	req->sv1 = newSVsv (fh_or_path);
		1229
		1230	if (SvPOK (req->sv1))
		1231	{
		1232	req->type = EIO_UTIME;
		1233	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1234	}
		1235	else
		1236	{
		1237	req->type = EIO_FUTIME;
		1238	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1239	}
		1240
		1241	REQ_SEND;
		1242	}
		1243
		1244	void
		1245	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1246	PPCODE:
		1247	{
		1248	dREQ;
		1249
		1250	req->sv1 = newSVsv (fh_or_path);
		1251	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1252
		1253	if (SvPOK (req->sv1))
		1254	{
		1255	req->type = EIO_TRUNCATE;
		1256	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1257	}
		1258	else
		1259	{
		1260	req->type = EIO_FTRUNCATE;
		1261	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1262	}
		1263
		1264	REQ_SEND;
		1265	}
		1266
		1267	void
		1268	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1269	ALIAS:
		1270	aio_chmod = EIO_CHMOD
		1271	aio_mkdir = EIO_MKDIR
		1272	PPCODE:
		1273	{
		1274	dREQ;
		1275
		1276	req->int2 = mode;
		1277	req->sv1 = newSVsv (fh_or_path);
		1278
		1279	if (SvPOK (req->sv1))
		1280	{
		1281	req->type = ix;
		1282	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1283	}
		1284	else
		1285	{
		1286	req->type = EIO_FCHMOD;
		1287	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1288	}
		1289
		1290	REQ_SEND;
		1291	}
		1292
		1293	void
		1294	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1295	PPCODE:
		1296	{
		1297	dREQ;
		1298
		1299	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1300	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1301	req->sv1 = newSVsv (fh_or_path);
		1302
		1303	if (SvPOK (req->sv1))
		1304	{
		1305	req->type = EIO_CHOWN;
		1306	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1307	}
		1308	else
		1309	{
		1310	req->type = EIO_FCHOWN;
		1311	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1312	}
		1313
		1314	REQ_SEND;
		1315	}
		1316
		1317	void
		1318	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1319	PPCODE:
		1320	{
		1321	dREQ;
		1322
		1323	req->type = EIO_READDIR;
		1324	req->sv1 = newSVsv (pathname);
		1325	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1326	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1327
		1328	if (flags & EIO_READDIR_DENTS)
		1329	req->int1 |= EIO_READDIR_CUSTOM2;
		1330
		1331	REQ_SEND;
		1332	}
		1333
		1334	void
1311	aio_unlink (pathname,callback=&PL_sv_undef)	1335	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1312	SV * pathname
1313	SV * callback
1314	ALIAS:	1336	ALIAS:
1315	aio_unlink = REQ_UNLINK	1337	aio_unlink = EIO_UNLINK
1316	aio_rmdir = REQ_RMDIR	1338	aio_rmdir = EIO_RMDIR
1317	aio_readdir = REQ_READDIR	1339	aio_readdir = EIO_READDIR
1318	PPCODE:	1340	PPCODE:
1319	{	1341	{
1320	dREQ;	1342	dREQ;
1321		1343
1322	req->type = ix;	1344	req->type = ix;
1323	req->data = newSVsv (pathname);	1345	req->sv1 = newSVsv (pathname);
1324	req->dataptr = SvPVbyte_nolen (req->data);	1346	req->ptr1 = SvPVbyte_nolen (req->sv1);
1325		1347
1326	REQ_SEND;	1348	REQ_SEND;
1327	}	1349	}
1328		1350
1329	void	1351	void
1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1352	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1331	SV * oldpath
1332	SV * newpath
1333	SV * callback
1334	ALIAS:	1353	ALIAS:
1335	aio_link = REQ_LINK	1354	aio_link = EIO_LINK
1336	aio_symlink = REQ_SYMLINK	1355	aio_symlink = EIO_SYMLINK
1337	aio_rename = REQ_RENAME	1356	aio_rename = EIO_RENAME
1338	PPCODE:	1357	PPCODE:
1339	{	1358	{
1340	dREQ;	1359	dREQ;
1341		1360
1342	req->type = ix;	1361	req->type = ix;
1343	req->fh = newSVsv (oldpath);	1362	req->sv1 = newSVsv (oldpath);
1344	req->data2ptr = SvPVbyte_nolen (req->fh);	1363	req->ptr1 = SvPVbyte_nolen (req->sv1);
1345	req->data = newSVsv (newpath);	1364	req->sv2 = newSVsv (newpath);
1346	req->dataptr = SvPVbyte_nolen (req->data);	1365	req->ptr2 = SvPVbyte_nolen (req->sv2);
1347		1366
1348	REQ_SEND;	1367	REQ_SEND;
1349	}	1368	}
1350		1369
1351	void	1370	void
1352	aio_busy (delay,callback=&PL_sv_undef)	1371	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1353	double delay
1354	SV * callback
1355	PPCODE:	1372	PPCODE:
1356	{	1373	{
1357	dREQ;	1374	dREQ;
1358		1375
1359	req->type = REQ_BUSY;	1376	req->type = EIO_MKNOD;
1360	req->fd = delay < 0. ? 0 : delay;	1377	req->sv1 = newSVsv (pathname);
1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1378	req->ptr1 = SvPVbyte_nolen (req->sv1);
1362		1379	req->int2 = (mode_t)mode;
		1380	req->offs = dev;
		1381
1363	REQ_SEND;	1382	REQ_SEND;
1364	}	1383	}
1365		1384
1366	void	1385	void
1367	aio_group (callback=&PL_sv_undef)	1386	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1368	SV * callback	1387	ALIAS:
1369	PROTOTYPE: ;$	1388	aio_mtouch = EIO_MTOUCH
		1389	aio_msync = EIO_MSYNC
1370	PPCODE:	1390	PPCODE:
1371	{	1391	{
		1392	STRLEN svlen;
		1393	char *svptr = SvPVbyte (data, svlen);
		1394	UV len = SvUV (length);
		1395
		1396	if (offset < 0)
		1397	offset += svlen;
		1398
		1399	if (offset < 0 || offset > svlen)
		1400	croak ("offset outside of scalar");
		1401
		1402	if (!SvOK (length) || len + offset > svlen)
		1403	len = svlen - offset;
		1404
		1405	{
		1406	dREQ;
		1407
		1408	req->type = ix;
		1409	req->sv2 = SvREFCNT_inc (data);
		1410	req->ptr2 = (char *)svptr + offset;
		1411	req->size = len;
		1412	req->int1 = flags;
		1413
		1414	REQ_SEND;
		1415	}
		1416	}
		1417
		1418	void
		1419	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1420	PPCODE:
		1421	{
		1422	STRLEN svlen;
		1423	char *svptr = SvPVbyte (data, svlen);
		1424	UV len = SvUV (length);
		1425
		1426	if (offset < 0)
		1427	offset += svlen;
		1428
		1429	if (offset < 0 || offset > svlen)
		1430	croak ("offset outside of scalar");
		1431
		1432	if (!SvOK (length) || len + offset > svlen)
		1433	len = svlen - offset;
		1434
		1435	{
		1436	dREQ;
		1437
		1438	req->type = EIO_MLOCK;
		1439	req->sv2 = SvREFCNT_inc (data);
		1440	req->ptr2 = (char *)svptr + offset;
		1441	req->size = len;
		1442
		1443	REQ_SEND;
		1444	}
		1445	}
		1446
		1447	void
		1448	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
		1453	req->type = EIO_MLOCKALL;
		1454	req->int1 = flags;
		1455
		1456	REQ_SEND;
		1457	}
		1458
		1459	void
		1460	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1461	PPCODE:
		1462	{
1372	dREQ;	1463	dREQ;
1373		1464
		1465	req->type = EIO_BUSY;
		1466	req->nv1 = delay < 0. ? 0. : delay;
		1467
		1468	REQ_SEND;
		1469	}
		1470
		1471	void
		1472	aio_group (SV *callback=&PL_sv_undef)
		1473	PPCODE:
		1474	{
		1475	dREQ;
		1476
1374	req->type = REQ_GROUP;	1477	req->type = EIO_GROUP;
		1478
1375	req_send (req);	1479	req_submit (req);
1376
1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1480	XPUSHs (req_sv (req, aio_grp_stash));
1378	}	1481	}
1379		1482
1380	void	1483	void
1381	aio_nop (callback=&PL_sv_undef)	1484	aio_nop (SV *callback=&PL_sv_undef)
1382	SV * callback	1485	ALIAS:
		1486	aio_nop = EIO_NOP
		1487	aio_sync = EIO_SYNC
1383	PPCODE:	1488	PPCODE:
1384	{	1489	{
1385	dREQ;	1490	dREQ;
1386		1491
1387	req->type = REQ_NOP;	1492	req->type = ix;
1388		1493
1389	REQ_SEND;	1494	REQ_SEND;
1390	}	1495	}
1391		1496
1392	void	1497	int
1393	aioreq_pri (int pri = DEFAULT_PRI)	1498	aioreq_pri (int pri = 0)
1394	CODE:	1499	CODE:
		1500	RETVAL = next_pri;
		1501	if (items > 0)
		1502	{
1395	if (pri < PRI_MIN) pri = PRI_MIN;	1503	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396	if (pri > PRI_MAX) pri = PRI_MAX;	1504	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397	next_pri = pri + PRI_BIAS;	1505	next_pri = pri;
		1506	}
		1507	OUTPUT:
		1508	RETVAL
1398		1509
1399	void	1510	void
1400	aioreq_nice (int nice = 0)	1511	aioreq_nice (int nice = 0)
1401	CODE:	1512	CODE:
1402	nice = next_pri - nice;	1513	nice = next_pri - nice;
1403	if (nice < PRI_MIN) nice = PRI_MIN;	1514	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404	if (nice > PRI_MAX) nice = PRI_MAX;	1515	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405	next_pri = nice + PRI_BIAS;	1516	next_pri = nice;
1406		1517
1407	void	1518	void
1408	flush ()	1519	flush ()
1409	PROTOTYPE:
1410	CODE:	1520	CODE:
1411	while (nreqs)	1521	while (eio_nreqs ())
1412	{	1522	{
1413	poll_wait ();	1523	poll_wait ();
1414	poll_cb ();	1524	poll_cb ();
1415	}	1525	}
1416		1526
1417	void	1527	int
1418	poll()	1528	poll ()
1419	PROTOTYPE:
1420	CODE:	1529	CODE:
1421	if (nreqs)
1422	{
1423	poll_wait ();	1530	poll_wait ();
1424	poll_cb ();	1531	RETVAL = poll_cb ();
1425	}
1426
1427	int
1428	poll_fileno()
1429	PROTOTYPE:
1430	CODE:
1431	RETVAL = respipe [0];
1432	OUTPUT:	1532	OUTPUT:
1433	RETVAL	1533	RETVAL
1434		1534
1435	int	1535	int
		1536	poll_fileno ()
		1537	CODE:
		1538	RETVAL = s_epipe_fd (&respipe);
		1539	OUTPUT:
		1540	RETVAL
		1541
		1542	int
1436	poll_cb(...)	1543	poll_cb (...)
1437	PROTOTYPE:	1544	PROTOTYPE:
1438	CODE:	1545	CODE:
1439	RETVAL = poll_cb ();	1546	RETVAL = poll_cb ();
1440	OUTPUT:	1547	OUTPUT:
1441	RETVAL	1548	RETVAL
1442		1549
1443	void	1550	void
1444	poll_wait()	1551	poll_wait ()
1445	PROTOTYPE:
1446	CODE:	1552	CODE:
1447	if (nreqs)
1448	poll_wait ();	1553	poll_wait ();
1449		1554
1450	int	1555	int
1451	nreqs()	1556	nreqs ()
1452	PROTOTYPE:
1453	CODE:	1557	CODE:
1454	RETVAL = nreqs;	1558	RETVAL = eio_nreqs ();
1455	OUTPUT:	1559	OUTPUT:
1456	RETVAL	1560	RETVAL
1457		1561
		1562	int
		1563	nready ()
		1564	CODE:
		1565	RETVAL = eio_nready ();
		1566	OUTPUT:
		1567	RETVAL
		1568
		1569	int
		1570	npending ()
		1571	CODE:
		1572	RETVAL = eio_npending ();
		1573	OUTPUT:
		1574	RETVAL
		1575
		1576	int
		1577	nthreads ()
		1578	CODE:
		1579	RETVAL = eio_nthreads ();
		1580	OUTPUT:
		1581	RETVAL
		1582
		1583	int
		1584	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1585	CODE:
		1586	RETVAL = posix_fadvise (fh, offset, length, advice);
		1587	OUTPUT:
		1588	RETVAL
		1589
		1590	ssize_t
		1591	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1592	CODE:
		1593	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1594	OUTPUT:
		1595	RETVAL
		1596
		1597	void
		1598	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1599	PPCODE:
		1600	sv_unmagic (scalar, MMAP_MAGIC);
		1601	{
		1602	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1603	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1604	if (addr == (void *)-1)
		1605	XSRETURN_NO;
		1606
		1607	sv_force_normal (scalar);
		1608
		1609	/* we store the length in mg_obj, as namlen is I32 :/ */
		1610	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1611	->mg_obj = (SV *)length;
		1612
		1613	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1614
		1615	if (!(prot & PROT_WRITE))
		1616	SvREADONLY_on (scalar);
		1617
		1618	if (SvLEN (scalar))
		1619	Safefree (SvPVX (scalar));
		1620
		1621	SvPVX (scalar) = (char *)addr;
		1622	SvCUR_set (scalar, length);
		1623	SvLEN_set (scalar, 0);
		1624	SvPOK_only (scalar);
		1625
		1626	XSRETURN_YES;
		1627	}
		1628
		1629	void
		1630	munmap (SV *scalar)
		1631	CODE:
		1632	sv_unmagic (scalar, MMAP_MAGIC);
		1633
		1634	int
		1635	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1636	ALIAS:
		1637	mprotect = 1
		1638	CODE:
		1639	{
		1640	STRLEN svlen;
		1641	void *addr = SvPVbyte (scalar, svlen);
		1642	size_t len = SvUV (length);
		1643
		1644	if (offset < 0)
		1645	offset += svlen;
		1646
		1647	if (offset < 0 || offset > svlen)
		1648	croak ("offset outside of scalar");
		1649
		1650	if (!SvOK (length) || len + offset > svlen)
		1651	len = svlen - offset;
		1652
		1653	addr = (void *)(((intptr_t)addr) + offset);
		1654	eio_page_align (&addr, &len);
		1655
		1656	switch (ix)
		1657	{
		1658	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1659	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1660	}
		1661	}
		1662	OUTPUT:
		1663	RETVAL
		1664
		1665	int
		1666	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1667	CODE:
		1668	{
		1669	STRLEN svlen;
		1670	void *addr = SvPVbyte (scalar, svlen);
		1671	size_t len = SvUV (length);
		1672
		1673	if (offset < 0)
		1674	offset += svlen;
		1675
		1676	if (offset < 0 || offset > svlen)
		1677	croak ("offset outside of scalar");
		1678
		1679	if (!SvOK (length) || len + offset > svlen)
		1680	len = svlen - offset;
		1681
		1682	addr = (void *)(((intptr_t)addr) + offset);
		1683	eio_page_align (&addr, &len);
		1684	#if _POSIX_MEMLOCK_RANGE
		1685	RETVAL = munlock (addr, len);
		1686	#else
		1687	RETVAL = ((errno = ENOSYS), -1);
		1688	#endif
		1689	}
		1690	OUTPUT:
		1691	RETVAL
		1692
		1693	int
		1694	munlockall ()
		1695	CODE:
		1696	#if _POSIX_MEMLOCK
		1697	munlockall ();
		1698	#else
		1699	RETVAL = -1;
		1700	errno = ENOSYS;
		1701	#endif
		1702	OUTPUT:
		1703	RETVAL
		1704
		1705	void _on_next_submit (SV *cb)
		1706	CODE:
		1707	SvREFCNT_dec (on_next_submit);
		1708	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1709
1458	PROTOTYPES: DISABLE	1710	PROTOTYPES: DISABLE
1459		1711
1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1712	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461		1713
1462	void	1714	void
1463	cancel (aio_req_ornot req)	1715	cancel (aio_req_ornot req)
1464	CODE:	1716	CODE:
1465	req_cancel (req);	1717	eio_cancel (req);
1466		1718
1467	void	1719	void
1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1720	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1469	CODE:	1721	PPCODE:
		1722	{
		1723	if (GIMME_V != G_VOID)
		1724	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1725
		1726	if (items > 1)
		1727	{
		1728	SV *cb_cv =get_cb (callback);
		1729
1470	SvREFCNT_dec (req->callback);	1730	SvREFCNT_dec (req->callback);
1471	req->callback = newSVsv (callback);	1731	req->callback = SvREFCNT_inc (cb_cv);
		1732	}
		1733	}
1472		1734
1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1735	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474		1736
1475	void	1737	void
1476	add (aio_req grp, ...)	1738	add (aio_req grp, ...)
1477	PPCODE:	1739	PPCODE:
1478	{	1740	{
1479	int i;	1741	int i;
1480	aio_req req;
1481		1742
1482	if (grp->fd == 2)	1743	if (grp->int1 == 2)
1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1744	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484		1745
1485	for (i = 1; i < items; ++i )	1746	for (i = 1; i < items; ++i )
1486	{	1747	{
		1748	aio_req req;
		1749
1487	if (GIMME_V != G_VOID)	1750	if (GIMME_V != G_VOID)
1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1751	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489		1752
1490	req = SvAIO_REQ (ST (i));	1753	req = SvAIO_REQ (ST (i));
1491		1754
1492	if (req)	1755	if (req)
1493	{	1756	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	}	1757	}
1506	}	1758	}
1507		1759
1508	void	1760	void
1509	cancel_subs (aio_req_ornot req)	1761	cancel_subs (aio_req_ornot req)
…		…
1513	void	1765	void
1514	result (aio_req grp, ...)	1766	result (aio_req grp, ...)
1515	CODE:	1767	CODE:
1516	{	1768	{
1517	int i;	1769	int i;
		1770	AV *av;
		1771
		1772	grp->errorno = errno;
		1773
1518	AV *av = newAV ();	1774	av = newAV ();
		1775	av_extend (av, items - 1);
1519		1776
1520	for (i = 1; i < items; ++i )	1777	for (i = 1; i < items; ++i )
1521	av_push (av, newSVsv (ST (i)));	1778	av_push (av, newSVsv (ST (i)));
1522		1779
1523	SvREFCNT_dec (grp->data);	1780	SvREFCNT_dec (grp->sv1);
1524	grp->data = (SV *)av;	1781	grp->sv1 = (SV *)av;
1525	}	1782	}
		1783
		1784	void
		1785	errno (aio_req grp, int errorno = errno)
		1786	CODE:
		1787	grp->errorno = errorno;
1526		1788
1527	void	1789	void
1528	limit (aio_req grp, int limit)	1790	limit (aio_req grp, int limit)
1529	CODE:	1791	CODE:
1530	grp->fd2 = limit;	1792	eio_grp_limit (grp, limit);
1531	aio_grp_feed (grp);
1532		1793
1533	void	1794	void
1534	feed (aio_req grp, SV *callback=&PL_sv_undef)	1795	feed (aio_req grp, SV *callback=&PL_sv_undef)
1535	CODE:	1796	CODE:
1536	{	1797	{
1537	SvREFCNT_dec (grp->fh2);	1798	SvREFCNT_dec (grp->sv2);
1538	grp->fh2 = newSVsv (callback);	1799	grp->sv2 = newSVsv (callback);
		1800	grp->feed = aio_grp_feed;
1539		1801
1540	if (grp->fd2 <= 0)	1802	if (grp->int2 <= 0)
1541	grp->fd2 = 2;	1803	grp->int2 = 2;
1542		1804
1543	aio_grp_feed (grp);	1805	eio_grp_limit (grp, grp->int2);
1544	}	1806	}
1545		1807

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