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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 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 && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>	21	# include <sys/mman.h>
36	# elif __freebsd	22	#endif
37	# 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
38	# include <sys/uio.h>	68	# include <sys/time.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# 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
43	# else	286	# else
44	# error sendfile support requested but not available	287	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	288	# endif
46	#endif	289	#endif
47		290	#ifndef MAP_HUGETLB
48	/* used for struct dirent, AIX doesn't provide it */	291	# define MAP_HUGETLB 0
49	#ifndef NAME_MAX
50	# define NAME_MAX 4096
51	#endif
52
53	#ifndef PTHREAD_STACK_MIN
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif	292	#endif
		293	#ifndef MAP_LOCKED
		294	# define MAP_LOCKED 0
76	#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
77		305
78	/* buffer size for various temporary buffers */	306	#ifndef makedev
79	#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
80		315
81	#define dBUF \	316	#ifndef PAGESIZE
82	char *aio_buf; \	317	# define PAGESIZE sysconf (_SC_PAGESIZE)
83	LOCK (wrklock); \	318	#endif
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	319
85	UNLOCK (wrklock); \	320	static int req_invoke (eio_req *req);
86	if (!aio_buf) \	321	#define EIO_FINISH(req) req_invoke (req)
87	return -1;	322	static void req_destroy (eio_req *grp);
		323	#define EIO_DESTROY(req) req_destroy (req)
88		324
89	enum {	325	enum {
90	REQ_QUIT,	326	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};	327	};
102		328
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	329	#include "libeio/eio.c"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		330
106	typedef struct aio_cb
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;
111	SV *fh, *fh2;
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;
119	int type;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123
124	unsigned char flags;
125	unsigned char pri;
126
127	SV *self; /* the perl counterpart of this request, if any */
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;
130
131	enum {
132	FLAG_CANCELLED = 0x01,
133	};
134
135	typedef aio_cb *aio_req;	331	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	332	typedef eio_req *aio_req_ornot;
137		333
138	enum {	334	static SV *on_next_submit;
139	PRI_MIN = -4,	335	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	336	static int max_outstanding;
141		337
142	DEFAULT_PRI = 0,	338	static s_epipe respipe;
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		339
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150	static volatile unsigned int nreqs, nready, npending;
151	static volatile unsigned int max_outstanding = 0xffffffff;
152	static int respipe [2];
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166	typedef struct worker {
167	/* locked by wrklock */
168	struct worker *prev, *next;
169
170	pthread_t tid;
171
172	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */
174	void *dbuf;
175	DIR *dirp;
176	} worker;
177
178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180	static void worker_clear (worker *wrk)
181	{
182	if (wrk->dirp)
183	{
184	closedir (wrk->dirp);
185	wrk->dirp = 0;
186	}
187
188	if (wrk->dbuf)
189	{
190	free (wrk->dbuf);
191	wrk->dbuf = 0;
192	}
193	}
194
195	static void worker_free (worker *wrk)
196	{
197	wrk->next->prev = wrk->prev;
198	wrk->prev->next = wrk->next;
199
200	free (wrk);
201	}
202
203	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
204	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
205	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
206
207	/*
208	* a somewhat faster data structure might be nice, but
209	* with 8 priorities this actually needs <20 insns
210	* per shift, the most expensive operation.
211	*/
212	typedef struct {
213	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
214	int size;
215	} reqq;
216
217	static reqq req_queue;
218	static reqq res_queue;
219
220	int reqq_push (reqq *q, aio_req req)
221	{
222	int pri = req->pri;
223	req->next = 0;
224
225	if (q->qe[pri])
226	{
227	q->qe[pri]->next = req;
228	q->qe[pri] = req;
229	}
230	else
231	q->qe[pri] = q->qs[pri] = req;
232
233	return q->size++;
234	}
235
236	aio_req reqq_shift (reqq *q)
237	{
238	int pri;
239
240	if (!q->size)
241	return 0;
242
243	--q->size;
244
245	for (pri = NUM_PRI; pri--; )
246	{
247	aio_req req = q->qs[pri];
248
249	if (req)
250	{
251	if (!(q->qs[pri] = req->next))
252	q->qe[pri] = 0;
253
254	return req;
255	}
256	}
257
258	abort ();
259	}
260
261	static int poll_cb (int max);
262	static void req_invoke (aio_req req);
263	static void req_free (aio_req req);	340	static void req_destroy (aio_req req);
264	static void req_cancel (aio_req req);	341	static void req_cancel (aio_req req);
265		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
266	/* must be called at most once */	355	/* must be called at most once */
267	static SV *req_sv (aio_req req, const char *klass)	356	static SV *req_sv (aio_req req, HV *stash)
268	{	357	{
269	if (!req->self)	358	if (!req->self)
270	{	359	{
271	req->self = (SV *)newHV ();	360	req->self = (SV *)newHV ();
272	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	361	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
273	}	362	}
274		363
275	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	364	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
276	}	365	}
277		366
278	static aio_req SvAIO_REQ (SV *sv)	367	static aio_req SvAIO_REQ (SV *sv)
279	{	368	{
280	MAGIC *mg;	369	MAGIC *mg;
281		370
282	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")))
283	croak ("object of class " AIO_REQ_KLASS " expected");	375	croak ("object of class IO::AIO::REQ expected");
284		376
285	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	377	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
286		378
287	return mg ? (aio_req)mg->mg_ptr : 0;	379	return mg ? (aio_req)mg->mg_ptr : 0;
288	}	380	}
289		381
290	static void aio_grp_feed (aio_req grp)	382	static void aio_grp_feed (aio_req grp)
291	{	383	{
292	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	384	if (grp->sv2 && SvOK (grp->sv2))
293	{	385	{
294	int old_len = grp->length;
295
296	if (grp->fh2 && SvOK (grp->fh2))
297	{
298	dSP;	386	dSP;
299		387
300	ENTER;	388	ENTER;
301	SAVETMPS;	389	SAVETMPS;
302	PUSHMARK (SP);	390	PUSHMARK (SP);
303	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	391	XPUSHs (req_sv (grp, aio_grp_stash));
304	PUTBACK;	392	PUTBACK;
305	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	393	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
306	SPAGAIN;	394	SPAGAIN;
307	FREETMPS;	395	FREETMPS;
308	LEAVE;	396	LEAVE;
309	}
310
311	/* stop if no progress has been made */
312	if (old_len == grp->length)
313	{
314	SvREFCNT_dec (grp->fh2);
315	grp->fh2 = 0;
316	break;
317	}
318	}	397	}
319	}	398	}
320		399
321	static void aio_grp_dec (aio_req grp)	400	static void req_submit (eio_req *req)
322	{	401	{
323	--grp->length;	402	eio_submit (req);
324		403
325	/* call feeder, if applicable */	404	if (expect_false (on_next_submit))
326	aio_grp_feed (grp);
327
328	/* finish, if done */
329	if (!grp->length && grp->fd)
330	{	405	{
331	req_invoke (grp);	406	dSP;
332	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);
333	}	414	}
334	}	415	}
335		416
336	static void poll_wait ()	417	static int req_invoke (eio_req *req)
337	{	418	{
338	fd_set rfd;	419	if (req->flags & FLAG_SV2_RO_OFF)
		420	SvREADONLY_off (req->sv2);
339		421
340	while (nreqs)	422	if (!EIO_CANCELLED (req) && req->callback)
341	{	423	{
342	int size;
343	if (WORDREAD_UNSAFE) LOCK (reslock);
344	size = res_queue.size;
345	if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347	if (size)
348	return;
349
350	FD_ZERO(&rfd);
351	FD_SET(respipe [0], &rfd);
352
353	select (respipe [0] + 1, &rfd, 0, 0, 0);
354	}
355	}
356
357	static void req_invoke (aio_req req)
358	{
359	dSP;	424	dSP;
		425	static SV *sv_result_cache; /* caches the result integer SV */
		426	SV *sv_result;
360		427
361	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
362	{
363	ENTER;	428	ENTER;
364	SAVETMPS;	429	SAVETMPS;
365	PUSHMARK (SP);	430	PUSHMARK (SP);
366	EXTEND (SP, 1);	431	EXTEND (SP, 1);
367		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
368	switch (req->type)	446	switch (req->type)
369	{	447	{
370	case REQ_READDIR:	448	case EIO_READDIR:
371	{	449	{
372	SV *rv = &PL_sv_undef;	450	SV *rv = &PL_sv_undef;
373		451
374	if (req->result >= 0)	452	if (req->result >= 0)
375	{	453	{
376	int i;	454	int i;
377	char *buf = req->data2ptr;	455	char *names = (char *)req->ptr2;
		456	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
378	AV *av = newAV ();	457	AV *av = newAV ();
379		458
380	av_extend (av, req->result - 1);	459	av_extend (av, req->result - 1);
381		460
382	for (i = 0; i < req->result; ++i)	461	for (i = 0; i < req->result; ++i)
383	{	462	{
384	SV *sv = newSVpv (buf, 0);	463	if (req->int1 & EIO_READDIR_DENTS)
		464	{
		465	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
385		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
386	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);
387	buf += SvCUR (sv) + 1;	495	names += SvCUR (name) + 1;
		496	}
388	}	497	}
389		498
390	rv = sv_2mortal (newRV_noinc ((SV *)av));	499	rv = sv_2mortal (newRV_noinc ((SV *)av));
391	}	500	}
392		501
393	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))));
394	}	506	}
395	break;	507	break;
396		508
397	case REQ_OPEN:	509	case EIO_OPEN:
398	{	510	{
399	/* convert fd to fh */	511	/* convert fd to fh */
400	SV *fh;	512	SV *fh = &PL_sv_undef;
401		513
402	PUSHs (sv_2mortal (newSViv (req->result)));	514	if (req->result >= 0)
403	PUTBACK;	515	{
404	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	516	GV *gv = (GV *)sv_newmortal ();
405	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);
406		523
407	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	);
408		531
		532	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		533	fh = (SV *)gv;
		534	}
		535
409	PUSHMARK (SP);	536	PUSHs (fh);
410	XPUSHs (sv_2mortal (fh));
411	}	537	}
412	break;	538	break;
413		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
414	case REQ_GROUP:	572	case EIO_GROUP:
415	req->fd = 2; /* mark group as finished */	573	req->int1 = 2; /* mark group as finished */
416		574
417	if (req->data)	575	if (req->sv1)
418	{	576	{
419	int i;	577	int i;
420	AV *av = (AV *)req->data;	578	AV *av = (AV *)req->sv1;
421		579
422	EXTEND (SP, AvFILL (av) + 1);	580	EXTEND (SP, AvFILL (av) + 1);
423	for (i = 0; i <= AvFILL (av); ++i)	581	for (i = 0; i <= AvFILL (av); ++i)
424	PUSHs (*av_fetch (av, i, 0));	582	PUSHs (*av_fetch (av, i, 0));
425	}	583	}
426	break;	584	break;
427		585
428	case REQ_NOP:	586	case EIO_NOP:
429	case REQ_BUSY:	587	case EIO_BUSY:
430	break;	588	break;
431		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
432	default:	620	default:
433	PUSHs (sv_2mortal (newSViv (req->result)));	621	PUSHs (sv_result);
434	break;	622	break;
435	}	623	}
436		624
437	errno = req->errorno;	625	errno = req->errorno;
438		626
439	PUTBACK;	627	PUTBACK;
440	call_sv (req->callback, G_VOID | G_EVAL);	628	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
441	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;
442		635
443	FREETMPS;	636	FREETMPS;
444	LEAVE;	637	LEAVE;
		638
		639	PUTBACK;
445	}	640	}
446		641
447	if (req->grp)	642	return !!SvTRUE (ERRSV);
448	{
449	aio_req grp = req->grp;
450
451	/* unlink request */
452	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
453	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
454
455	if (grp->grp_first == req)
456	grp->grp_first = req->grp_next;
457
458	aio_grp_dec (grp);
459	}
460
461	if (SvTRUE (ERRSV))
462	{
463	req_free (req);
464	croak (0);
465	}
466	}	643	}
467		644
468	static void req_free (aio_req req)	645	static void req_destroy (aio_req req)
469	{	646	{
470	if (req->self)	647	if (req->self)
471	{	648	{
472	sv_unmagic (req->self, PERL_MAGIC_ext);	649	sv_unmagic (req->self, PERL_MAGIC_ext);
473	SvREFCNT_dec (req->self);	650	SvREFCNT_dec (req->self);
474	}	651	}
475		652
476	SvREFCNT_dec (req->data);
477	SvREFCNT_dec (req->fh);	653	SvREFCNT_dec (req->sv1);
478	SvREFCNT_dec (req->fh2);	654	SvREFCNT_dec (req->sv2);
479	SvREFCNT_dec (req->callback);	655	SvREFCNT_dec (req->callback);
480	Safefree (req->statdata);
481
482	if (req->type == REQ_READDIR)
483	free (req->data2ptr);
484		656
485	Safefree (req);	657	Safefree (req);
486	}	658	}
487		659
488	static void req_cancel_subs (aio_req grp)	660	static void req_cancel_subs (aio_req grp)
489	{	661	{
490	aio_req sub;	662	aio_req sub;
491		663
492	if (grp->type != REQ_GROUP)	664	if (grp->type != EIO_GROUP)
493	return;	665	return;
494		666
495	SvREFCNT_dec (grp->fh2);	667	SvREFCNT_dec (grp->sv2);
496	grp->fh2 = 0;	668	grp->sv2 = 0;
497		669
498	for (sub = grp->grp_first; sub; sub = sub->grp_next)	670	eio_grp_cancel (grp);
499	req_cancel (sub);
500	}	671	}
501		672
502	static void req_cancel (aio_req req)	673	static void create_respipe (void)
503	{	674	{
504	req->flags |= FLAG_CANCELLED;	675	if (s_epipe_renew (&respipe))
505		676	croak ("IO::AIO: unable to initialize result pipe");
506	req_cancel_subs (req);
507	}	677	}
508		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
509	static int poll_cb (int max)	698	static int poll_cb (void)
510	{	699	{
511	dSP;
512	int count = 0;
513	int do_croak = 0;
514	aio_req req;
515
516	for (;;)	700	for (;;)
517	{	701	{
518	while (max <= 0 || count < max)	702	int res = eio_poll ();
519	{
520	LOCK (reslock);
521	req = reqq_shift (&res_queue);
522		703
523	if (req)	704	if (res > 0)
524	{
525	--npending;
526
527	if (!res_queue.size)
528	{
529	/* read any signals sent by the worker threads */
530	char buf [32];
531	while (read (respipe [0], buf, 32) == 32)
532	;
533	}
534	}
535
536	UNLOCK (reslock);
537
538	if (!req)
539	break;
540
541	--nreqs;
542
543	if (req->type == REQ_QUIT)
544	--started;
545	else if (req->type == REQ_GROUP && req->length)
546	{
547	req->fd = 1; /* mark request as delayed */
548	continue;
549	}
550	else
551	{
552	if (req->type == REQ_READ)
553	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556	SvREADONLY_off (req->data);
557
558	if (req->statdata)
559	{
560	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561	PL_laststatval = req->result;
562	PL_statcache = *(req->statdata);
563	}
564
565	req_invoke (req);
566
567	count++;
568	}
569
570	req_free (req);
571	}
572
573	if (nreqs <= max_outstanding)
574	break;	705	croak (0);
		706
		707	if (!max_outstanding || max_outstanding > eio_nreqs ())
		708	return res;
575		709
576	poll_wait ();	710	poll_wait ();
577
578	max = 0;
579	}	711	}
580
581	return count;
582	}	712	}
583		713
584	static void *aio_proc(void *arg);
585
586	static void start_thread (void)	714	static void atfork_child (void)
587	{	715	{
588	sigset_t fullsigset, oldsigset;	716	create_respipe ();
589	pthread_attr_t attr;
590
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	pthread_attr_init (&attr);
597	pthread_attr_setstacksize (&attr, STACKSIZE);
598	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
599
600	sigfillset (&fullsigset);
601
602	LOCK (wrklock);
603	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
604
605	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
606	{
607	wrk->prev = &wrk_first;
608	wrk->next = wrk_first.next;
609	wrk_first.next->prev = wrk;
610	wrk_first.next = wrk;
611	++started;
612	}
613	else
614	free (wrk);
615
616	sigprocmask (SIG_SETMASK, &oldsigset, 0);
617	UNLOCK (wrklock);
618	}
619
620	static void req_send (aio_req req)
621	{
622	while (started < wanted && nreqs >= started)
623	start_thread ();
624
625	++nreqs;
626
627	LOCK (reqlock);
628	++nready;
629	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	req_send (req);
644	}
645
646	static void min_parallel (int nthreads)
647	{
648	if (wanted < nthreads)
649	wanted = nthreads;
650	}
651
652	static void max_parallel (int nthreads)
653	{
654	int cur = started;
655
656	if (wanted > nthreads)
657	wanted = nthreads;
658
659	while (cur > wanted)
660	{
661	end_thread ();
662	cur--;
663	}
664
665	while (started > wanted)
666	{
667	poll_wait ();
668	poll_cb (0);
669	}
670	}
671
672	static void create_pipe ()
673	{
674	if (pipe (respipe))
675	croak ("unable to initialize result pipe");
676
677	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
678	croak ("cannot set result pipe to nonblocking mode");
679
680	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
681	croak ("cannot set result pipe to nonblocking mode");
682	}	717	}
683		718
684	/*****************************************************************************/	719	/*****************************************************************************/
685	/* work around various missing functions */
686		720
687	#if !HAVE_PREADWRITE	721	#if !_POSIX_MAPPED_FILES
688	# define pread aio_pread	722	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
689	# define pwrite aio_pwrite	723	# define munmap(addr,length) (errno = ENOSYS, -1)
690
691	/*
692	* make our pread/pwrite safe against themselves, but not against
693	* normal read/write by using a mutex. slows down execution a lot,
694	* but that's your problem, not mine.
695	*/
696	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
697
698	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
699	{
700	ssize_t res;
701	off_t ooffset;
702
703	LOCK (preadwritelock);
704	ooffset = lseek (fd, 0, SEEK_CUR);
705	lseek (fd, offset, SEEK_SET);
706	res = read (fd, buf, count);
707	lseek (fd, ooffset, SEEK_SET);
708	UNLOCK (preadwritelock);
709
710	return res;
711	}
712
713	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
714	{
715	ssize_t res;
716	off_t ooffset;
717
718	LOCK (preadwritelock);
719	ooffset = lseek (fd, 0, SEEK_CUR);
720	lseek (fd, offset, SEEK_SET);
721	res = write (fd, buf, count);
722	lseek (fd, offset, SEEK_SET);
723	UNLOCK (preadwritelock);
724
725	return res;
726	}
727	#endif
728
729	#if !HAVE_FDATASYNC
730	# define fdatasync fsync
731	#endif
732
733	#if !HAVE_READAHEAD
734	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
735
736	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
737	{
738	dBUF;
739
740	while (count > 0)
741	{
742	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
743
744	pread (fd, aio_buf, len, offset);
745	offset += len;
746	count -= len;
747	}
748
749	errno = 0;
750	}
751
752	#endif
753
754	#if !HAVE_READDIR_R
755	# define readdir_r aio_readdir_r
756
757	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
758
759	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
760	{
761	struct dirent *e;
762	int errorno;
763
764	LOCK (readdirlock);
765
766	e = readdir (dirp);
767	errorno = errno;
768
769	if (e)
770	{
771	*res = ent;
772	strcpy (ent->d_name, e->d_name);
773	}
774	else
775	*res = 0;
776
777	UNLOCK (readdirlock);
778
779	errno = errorno;
780	return e ? 0 : -1;
781	}
782	#endif
783
784	/* sendfile always needs emulation */
785	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
786	{
787	ssize_t res;
788
789	if (!count)
790	return 0;
791
792	#if HAVE_SENDFILE
793	# if __linux
794	res = sendfile (ofd, ifd, &offset, count);
795
796	# elif __freebsd
797	/*
798	* Of course, the freebsd sendfile is a dire hack with no thoughts
799	* wasted on making it similar to other I/O functions.
800	*/
801	{
802	off_t sbytes;
803	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
804
805	if (res < 0 && sbytes)
806	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
807	res = sbytes;
808	}
809
810	# elif __hpux
811	res = sendfile (ofd, ifd, offset, count, 0, 0);
812
813	# elif __solaris
814	{
815	struct sendfilevec vec;
816	size_t sbytes;
817
818	vec.sfv_fd = ifd;
819	vec.sfv_flag = 0;
820	vec.sfv_off = offset;
821	vec.sfv_len = count;
822
823	res = sendfilev (ofd, &vec, 1, &sbytes);
824
825	if (res < 0 && sbytes)
826	res = sbytes;
827	}
828
829	# endif	724	#endif
830	#else
831	res = -1;
832	errno = ENOSYS;
833	#endif
834		725
835	if (res < 0	726	#if !_POSIX_MEMORY_PROTECTION
836	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	727	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
837	#if __solaris	728	# define PROT_NONE 0
838	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	729	# define PROT_WRITE 0
		730	# define MAP_PRIVATE 0
		731	# define MAP_SHARED 0
		732	# define MAP_FIXED 0
839	#endif	733	#endif
840	)
841	)
842	{
843	/* emulate sendfile. this is a major pain in the ass */
844	dBUF;
845		734
846	res = 0;	735	#define MMAP_MAGIC PERL_MAGIC_ext
847		736
848	while (count)	737	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
849	{	738	{
850	ssize_t cnt;	739	int old_errno = errno;
851		740	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
852	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	741	errno = old_errno;
853		742
854	if (cnt <= 0)	743	mg->mg_obj = 0; /* just in case */
855	{
856	if (cnt && !res) res = -1;
857	break;
858	}
859		744
860	cnt = write (ofd, aio_buf, cnt);	745	SvREADONLY_off (sv);
861		746
862	if (cnt <= 0)	747	if (SvPVX (sv) != mg->mg_ptr)
863	{	748	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
864	if (cnt && !res) res = -1;
865	break;
866	}
867		749
868	offset += cnt;	750	SvCUR_set (sv, 0);
869	res += cnt;	751	SvPVX (sv) = 0;
870	count -= cnt;	752	SvOK_off (sv);
871	}
872	}
873		753
874	return res;	754	return 0;
875	}	755	}
876		756
877	/* read a full directory */	757	static MGVTBL mmap_vtbl = {
878	static void scandir_ (aio_req req, worker *self)	758	0, 0, 0, 0, mmap_free
879	{	759	};
880	DIR *dirp;
881	union
882	{
883	struct dirent d;
884	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
885	} *u;
886	struct dirent *entp;
887	char *name, *names;
888	int memlen = 4096;
889	int memofs = 0;
890	int res = 0;
891	int errorno;
892
893	LOCK (wrklock);
894	self->dirp = dirp = opendir (req->dataptr);
895	self->dbuf = u = malloc (sizeof (*u));
896	req->data2ptr = names = malloc (memlen);
897	UNLOCK (wrklock);
898
899	if (dirp && u && names)
900	for (;;)
901	{
902	errno = 0;
903	readdir_r (dirp, &u->d, &entp);
904
905	if (!entp)
906	break;
907
908	name = entp->d_name;
909
910	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
911	{
912	int len = strlen (name) + 1;
913
914	res++;
915
916	while (memofs + len > memlen)
917	{
918	memlen *= 2;
919	LOCK (wrklock);
920	req->data2ptr = names = realloc (names, memlen);
921	UNLOCK (wrklock);
922
923	if (!names)
924	break;
925	}
926
927	memcpy (names + memofs, name, len);
928	memofs += len;
929	}
930	}
931
932	if (errno)
933	res = -1;
934
935	req->result = res;
936	}
937		760
938	/*****************************************************************************/	761	/*****************************************************************************/
939		762
940	static void *aio_proc (void *thr_arg)	763	static SV * get_cb (SV *cb_sv)
941	{	764	{
942	aio_req req;	765	SvGETMAGIC (cb_sv);
943	int type;	766	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
944	worker *self = (worker *)thr_arg;
945
946	do
947	{
948	LOCK (reqlock);
949
950	for (;;)
951	{
952	self->req = req = reqq_shift (&req_queue);
953
954	if (req)
955	break;
956
957	pthread_cond_wait (&reqwait, &reqlock);
958	}
959
960	--nready;
961
962	UNLOCK (reqlock);
963
964	errno = 0; /* strictly unnecessary */
965	type = req->type; /* remember type for QUIT check */
966
967	if (!(req->flags & FLAG_CANCELLED))
968	switch (type)
969	{
970	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
971	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
972
973	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
974	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
975
976	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
977	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
978	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
979
980	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
981	case REQ_CLOSE: req->result = close (req->fd); break;
982	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
983	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
984	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
985	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
986	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
987
988	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
989	case REQ_FSYNC: req->result = fsync (req->fd); break;
990	case REQ_READDIR: scandir_ (req, self); break;
991
992	case REQ_BUSY:
993	{
994	struct timeval tv;
995
996	tv.tv_sec = req->fd;
997	tv.tv_usec = req->fd2;
998
999	req->result = select (0, 0, 0, 0, &tv);
1000	}
1001
1002	case REQ_GROUP:
1003	case REQ_NOP:
1004	case REQ_QUIT:
1005	break;
1006
1007	default:
1008	req->result = ENOSYS;
1009	break;
1010	}
1011
1012	req->errorno = errno;
1013
1014	LOCK (reslock);
1015
1016	++npending;
1017
1018	if (!reqq_push (&res_queue, req))
1019	/* write a dummy byte to the pipe so fh becomes ready */
1020	write (respipe [1], &respipe, 1);
1021
1022	self->req = 0;
1023	worker_clear (self);
1024
1025	UNLOCK (reslock);
1026	}
1027	while (type != REQ_QUIT);
1028
1029	LOCK (wrklock);
1030	worker_free (self);
1031	UNLOCK (wrklock);
1032
1033	return 0;
1034	}
1035
1036	/*****************************************************************************/
1037
1038	static void atfork_prepare (void)
1039	{
1040	LOCK (wrklock);
1041	LOCK (reqlock);
1042	LOCK (reslock);
1043	#if !HAVE_PREADWRITE
1044	LOCK (preadwritelock);
1045	#endif
1046	#if !HAVE_READDIR_R
1047	LOCK (readdirlock);
1048	#endif
1049	}
1050
1051	static void atfork_parent (void)
1052	{
1053	#if !HAVE_READDIR_R
1054	UNLOCK (readdirlock);
1055	#endif
1056	#if !HAVE_PREADWRITE
1057	UNLOCK (preadwritelock);
1058	#endif
1059	UNLOCK (reslock);
1060	UNLOCK (reqlock);
1061	UNLOCK (wrklock);
1062	}
1063
1064	static void atfork_child (void)
1065	{
1066	aio_req prv;
1067
1068	while (prv = reqq_shift (&req_queue))
1069	req_free (prv);
1070
1071	while (prv = reqq_shift (&res_queue))
1072	req_free (prv);
1073
1074	while (wrk_first.next != &wrk_first)
1075	{
1076	worker *wrk = wrk_first.next;
1077
1078	if (wrk->req)
1079	req_free (wrk->req);
1080
1081	worker_clear (wrk);
1082	worker_free (wrk);
1083	}
1084
1085	started = 0;
1086	nreqs = 0;
1087
1088	close (respipe [0]);
1089	close (respipe [1]);
1090	create_pipe ();
1091
1092	atfork_parent ();
1093	}	767	}
1094		768
1095	#define dREQ \	769	#define dREQ \
		770	SV *cb_cv; \
1096	aio_req req; \	771	aio_req req; \
1097	int req_pri = next_pri; \	772	int req_pri = next_pri; \
1098	next_pri = DEFAULT_PRI + PRI_BIAS; \	773	next_pri = EIO_PRI_DEFAULT; \
1099	\	774	\
1100	if (SvOK (callback) && !SvROK (callback)) \	775	cb_cv = get_cb (callback); \
1101	croak ("callback must be undef or of reference type"); \
1102	\	776	\
1103	Newz (0, req, 1, aio_cb); \	777	Newz (0, req, 1, eio_req); \
1104	if (!req) \	778	if (!req) \
1105	croak ("out of memory during aio_req allocation"); \	779	croak ("out of memory during eio_req allocation"); \
1106	\	780	\
1107	req->callback = newSVsv (callback); \	781	req->callback = SvREFCNT_inc (cb_cv); \
1108	req->pri = req_pri	782	req->pri = req_pri
1109		783
1110	#define REQ_SEND \	784	#define REQ_SEND \
		785	PUTBACK; \
1111	req_send (req); \	786	req_submit (req); \
		787	SPAGAIN; \
1112	\	788	\
1113	if (GIMME_V != G_VOID) \	789	if (GIMME_V != G_VOID) \
1114	XPUSHs (req_sv (req, AIO_REQ_KLASS));	790	XPUSHs (req_sv (req, aio_req_stash));
1115		791
1116	MODULE = IO::AIO PACKAGE = IO::AIO	792	MODULE = IO::AIO PACKAGE = IO::AIO
1117		793
1118	PROTOTYPES: ENABLE	794	PROTOTYPES: ENABLE
1119		795
1120	BOOT:	796	BOOT:
1121	{	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
1122	HV *stash = gv_stashpv ("IO::AIO", 1);	915	aio_stash = gv_stashpv ("IO::AIO" , 1);
1123	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	916	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1124	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	917	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1125	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1126		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
1127	create_pipe ();	924	create_respipe ();
1128	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1129	}
1130		925
1131	void	926	if (eio_init (want_poll, done_poll) < 0)
1132	min_parallel (int nthreads)	927	croak ("IO::AIO: unable to initialise eio library");
1133	PROTOTYPE: $
1134		928
1135	void	929	/* atfork child called in fifo order, so before eio's handler */
1136	max_parallel (int nthreads)	930	X_THREAD_ATFORK (0, 0, atfork_child);
1137	PROTOTYPE: $	931	}
1138		932
1139	int	933	void
1140	max_outstanding (int maxreqs)	934	max_poll_reqs (unsigned int nreqs)
1141	PROTOTYPE: $	935	PROTOTYPE: $
1142	CODE:	936	CODE:
1143	RETVAL = max_outstanding;	937	eio_set_max_poll_reqs (nreqs);
		938
		939	void
		940	max_poll_time (double nseconds)
		941	PROTOTYPE: $
		942	CODE:
		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:
1144	max_outstanding = maxreqs;	973	max_outstanding = maxreqs;
1145	OUTPUT:
1146	RETVAL
1147		974
1148	void	975	void
1149	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	976	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1150	SV * pathname
1151	int flags
1152	int mode
1153	SV * callback
1154	PROTOTYPE: $$$;$
1155	PPCODE:	977	PPCODE:
1156	{	978	{
1157	dREQ;	979	dREQ;
1158		980
1159	req->type = REQ_OPEN;	981	req->type = EIO_OPEN;
1160	req->data = newSVsv (pathname);	982	req->sv1 = newSVsv (pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);	983	req->ptr1 = SvPVbyte_nolen (req->sv1);
1162	req->fd = flags;	984	req->int1 = flags;
1163	req->mode = mode;	985	req->int2 = mode;
1164		986
1165	REQ_SEND;	987	REQ_SEND;
1166	}	988	}
1167		989
1168	void	990	void
1169	aio_close (fh,callback=&PL_sv_undef)	991	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1170	SV * fh
1171	SV * callback
1172	PROTOTYPE: $;$
1173	ALIAS:	992	ALIAS:
1174	aio_close = REQ_CLOSE
1175	aio_fsync = REQ_FSYNC	993	aio_fsync = EIO_FSYNC
1176	aio_fdatasync = REQ_FDATASYNC	994	aio_fdatasync = EIO_FDATASYNC
1177	PPCODE:	995	PPCODE:
1178	{	996	{
		997	int fd = s_fileno_croak (fh, 0);
1179	dREQ;	998	dREQ;
1180		999
1181	req->type = ix;	1000	req->type = ix;
1182	req->fh = newSVsv (fh);	1001	req->sv1 = newSVsv (fh);
1183	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1002	req->int1 = fd;
1184		1003
1185	REQ_SEND (req);	1004	REQ_SEND (req);
1186	}	1005	}
1187		1006
1188	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
1189	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)
1190	SV * fh
1191	UV offset
1192	UV length
1193	SV * data
1194	UV dataoffset
1195	SV * callback
1196	ALIAS:	1075	ALIAS:
1197	aio_read = REQ_READ	1076	aio_read = EIO_READ
1198	aio_write = REQ_WRITE	1077	aio_write = EIO_WRITE
1199	PROTOTYPE: $$$$$;$
1200	PPCODE:	1078	PPCODE:
1201	{	1079	{
1202	aio_req req;
1203	STRLEN svlen;	1080	STRLEN svlen;
		1081	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1204	char *svptr = SvPVbyte (data, svlen);	1082	char *svptr = SvPVbyte (data, svlen);
1205		1083	UV len = SvUV (length);
1206	SvUPGRADE (data, SVt_PV);
1207	SvPOK_on (data);
1208		1084
1209	if (dataoffset < 0)	1085	if (dataoffset < 0)
1210	dataoffset += svlen;	1086	dataoffset += svlen;
1211		1087
1212	if (dataoffset < 0 || dataoffset > svlen)	1088	if (dataoffset < 0 || dataoffset > svlen)
1213	croak ("data offset outside of string");	1089	croak ("dataoffset outside of data scalar");
1214		1090
1215	if (ix == REQ_WRITE)	1091	if (ix == EIO_WRITE)
1216	{	1092	{
1217	/* write: check length and adjust. */	1093	/* write: check length and adjust. */
1218	if (length < 0 || length + dataoffset > svlen)	1094	if (!SvOK (length) || len + dataoffset > svlen)
1219	length = svlen - dataoffset;	1095	len = svlen - dataoffset;
1220	}	1096	}
1221	else	1097	else
1222	{	1098	{
1223	/* read: grow scalar as necessary */	1099	/* read: check type and grow scalar as necessary */
		1100	SvUPGRADE (data, SVt_PV);
1224	svptr = SvGROW (data, length + dataoffset);	1101	svptr = SvGROW (data, len + dataoffset + 1);
1225	}	1102	}
1226
1227	if (length < 0)
1228	croak ("length must not be negative");
1229		1103
1230	{	1104	{
1231	dREQ;	1105	dREQ;
1232		1106
1233	req->type = ix;	1107	req->type = ix;
1234	req->fh = newSVsv (fh);	1108	req->sv1 = newSVsv (fh);
1235	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1109	req->int1 = fd;
1236	: IoOFP (sv_2io (fh)));	1110	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1237	req->offset = offset;	1111	req->size = len;
1238	req->length = length;
1239	req->data = SvREFCNT_inc (data);	1112	req->sv2 = SvREFCNT_inc (data);
1240	req->dataptr = (char *)svptr + dataoffset;	1113	req->ptr2 = (char *)svptr + dataoffset;
		1114	req->stroffset = dataoffset;
1241		1115
1242	if (!SvREADONLY (data))	1116	if (!SvREADONLY (data))
1243	{	1117	{
1244	SvREADONLY_on (data);	1118	SvREADONLY_on (data);
1245	req->data2ptr = (void *)data;	1119	req->flags |= FLAG_SV2_RO_OFF;
1246	}	1120	}
1247		1121
1248	REQ_SEND;	1122	REQ_SEND;
1249	}	1123	}
1250	}	1124	}
1251		1125
1252	void	1126	void
1253	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1127	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1254	SV * out_fh	1128	ALIAS:
1255	SV * in_fh	1129	aio_readlink = EIO_READLINK
1256	UV in_offset	1130	aio_realpath = EIO_REALPATH
1257	UV length
1258	SV * callback
1259	PROTOTYPE: $$$$;$
1260	PPCODE:	1131	PPCODE:
1261	{	1132	{
		1133	SV *data;
		1134	dREQ;
		1135
		1136	req->type = ix;
		1137	req->sv1 = newSVsv (path);
		1138	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1139
		1140	REQ_SEND;
		1141	}
		1142
		1143	void
		1144	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1145	PPCODE:
		1146	{
		1147	int ifd = s_fileno_croak (in_fh , 0);
		1148	int ofd = s_fileno_croak (out_fh, 1);
1262	dREQ;	1149	dREQ;
1263		1150
1264	req->type = REQ_SENDFILE;	1151	req->type = EIO_SENDFILE;
1265	req->fh = newSVsv (out_fh);	1152	req->sv1 = newSVsv (out_fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1153	req->int1 = ofd;
1267	req->fh2 = newSVsv (in_fh);	1154	req->sv2 = newSVsv (in_fh);
1268	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1155	req->int2 = ifd;
1269	req->offset = in_offset;	1156	req->offs = in_offset;
1270	req->length = length;	1157	req->size = length;
1271		1158
1272	REQ_SEND;	1159	REQ_SEND;
1273	}	1160	}
1274		1161
1275	void	1162	void
1276	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1163	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1277	SV * fh
1278	UV offset
1279	IV length
1280	SV * callback
1281	PROTOTYPE: $$$;$
1282	PPCODE:	1164	PPCODE:
1283	{	1165	{
		1166	int fd = s_fileno_croak (fh, 0);
1284	dREQ;	1167	dREQ;
1285		1168
1286	req->type = REQ_READAHEAD;	1169	req->type = EIO_READAHEAD;
1287	req->fh = newSVsv (fh);	1170	req->sv1 = newSVsv (fh);
1288	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1171	req->int1 = fd;
1289	req->offset = offset;	1172	req->offs = offset;
1290	req->length = length;	1173	req->size = length;
1291		1174
1292	REQ_SEND;	1175	REQ_SEND;
1293	}	1176	}
1294		1177
1295	void	1178	void
1296	aio_stat (fh_or_path,callback=&PL_sv_undef)	1179	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1297	SV * fh_or_path
1298	SV * callback
1299	ALIAS:	1180	ALIAS:
1300	aio_stat = REQ_STAT	1181	aio_stat = EIO_STAT
1301	aio_lstat = REQ_LSTAT	1182	aio_lstat = EIO_LSTAT
		1183	aio_statvfs = EIO_STATVFS
1302	PPCODE:	1184	PPCODE:
1303	{	1185	{
1304	dREQ;	1186	dREQ;
1305		1187
1306	New (0, req->statdata, 1, Stat_t);	1188	req->sv1 = newSVsv (fh_or_path);
1307	if (!req->statdata)
1308	{
1309	req_free (req);
1310	croak ("out of memory during aio_req->statdata allocation");
1311	}
1312		1189
1313	if (SvPOK (fh_or_path))	1190	if (SvPOK (req->sv1))
1314	{	1191	{
1315	req->type = ix;	1192	req->type = ix;
1316	req->data = newSVsv (fh_or_path);
1317	req->dataptr = SvPVbyte_nolen (req->data);	1193	req->ptr1 = SvPVbyte_nolen (req->sv1);
1318	}	1194	}
1319	else	1195	else
1320	{	1196	{
1321	req->type = REQ_FSTAT;	1197	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1322	req->fh = newSVsv (fh_or_path);
1323	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1198	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1324	}	1199	}
1325		1200
1326	REQ_SEND;	1201	REQ_SEND;
1327	}	1202	}
1328		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
1329	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
1330	aio_unlink (pathname,callback=&PL_sv_undef)	1335	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1331	SV * pathname
1332	SV * callback
1333	ALIAS:	1336	ALIAS:
1334	aio_unlink = REQ_UNLINK	1337	aio_unlink = EIO_UNLINK
1335	aio_rmdir = REQ_RMDIR	1338	aio_rmdir = EIO_RMDIR
1336	aio_readdir = REQ_READDIR	1339	aio_readdir = EIO_READDIR
1337	PPCODE:	1340	PPCODE:
1338	{	1341	{
1339	dREQ;	1342	dREQ;
1340		1343
1341	req->type = ix;	1344	req->type = ix;
1342	req->data = newSVsv (pathname);	1345	req->sv1 = newSVsv (pathname);
1343	req->dataptr = SvPVbyte_nolen (req->data);	1346	req->ptr1 = SvPVbyte_nolen (req->sv1);
1344		1347
1345	REQ_SEND;	1348	REQ_SEND;
1346	}	1349	}
1347		1350
1348	void	1351	void
1349	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1352	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1350	SV * oldpath
1351	SV * newpath
1352	SV * callback
1353	ALIAS:	1353	ALIAS:
1354	aio_link = REQ_LINK	1354	aio_link = EIO_LINK
1355	aio_symlink = REQ_SYMLINK	1355	aio_symlink = EIO_SYMLINK
1356	aio_rename = REQ_RENAME	1356	aio_rename = EIO_RENAME
1357	PPCODE:	1357	PPCODE:
1358	{	1358	{
1359	dREQ;	1359	dREQ;
1360		1360
1361	req->type = ix;	1361	req->type = ix;
1362	req->fh = newSVsv (oldpath);	1362	req->sv1 = newSVsv (oldpath);
1363	req->data2ptr = SvPVbyte_nolen (req->fh);	1363	req->ptr1 = SvPVbyte_nolen (req->sv1);
1364	req->data = newSVsv (newpath);	1364	req->sv2 = newSVsv (newpath);
1365	req->dataptr = SvPVbyte_nolen (req->data);	1365	req->ptr2 = SvPVbyte_nolen (req->sv2);
1366		1366
1367	REQ_SEND;	1367	REQ_SEND;
1368	}	1368	}
1369		1369
1370	void	1370	void
1371	aio_busy (delay,callback=&PL_sv_undef)	1371	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1372	double delay
1373	SV * callback
1374	PPCODE:	1372	PPCODE:
1375	{	1373	{
1376	dREQ;	1374	dREQ;
1377		1375
1378	req->type = REQ_BUSY;	1376	req->type = EIO_MKNOD;
1379	req->fd = delay < 0. ? 0 : delay;	1377	req->sv1 = newSVsv (pathname);
1380	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1378	req->ptr1 = SvPVbyte_nolen (req->sv1);
1381		1379	req->int2 = (mode_t)mode;
		1380	req->offs = dev;
		1381
1382	REQ_SEND;	1382	REQ_SEND;
1383	}	1383	}
1384		1384
1385	void	1385	void
1386	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)
1387	SV * callback	1387	ALIAS:
1388	PROTOTYPE: ;$	1388	aio_mtouch = EIO_MTOUCH
		1389	aio_msync = EIO_MSYNC
1389	PPCODE:	1390	PPCODE:
1390	{	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	{
1391	dREQ;	1463	dREQ;
1392		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
1393	req->type = REQ_GROUP;	1477	req->type = EIO_GROUP;
		1478
1394	req_send (req);	1479	req_submit (req);
1395
1396	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1480	XPUSHs (req_sv (req, aio_grp_stash));
1397	}	1481	}
1398		1482
1399	void	1483	void
1400	aio_nop (callback=&PL_sv_undef)	1484	aio_nop (SV *callback=&PL_sv_undef)
1401	SV * callback	1485	ALIAS:
		1486	aio_nop = EIO_NOP
		1487	aio_sync = EIO_SYNC
1402	PPCODE:	1488	PPCODE:
1403	{	1489	{
1404	dREQ;	1490	dREQ;
1405		1491
1406	req->type = REQ_NOP;	1492	req->type = ix;
1407		1493
1408	REQ_SEND;	1494	REQ_SEND;
1409	}	1495	}
1410		1496
1411	int	1497	int
1412	aioreq_pri (int pri = 0)	1498	aioreq_pri (int pri = 0)
1413	PROTOTYPE: ;$
1414	CODE:	1499	CODE:
1415	RETVAL = next_pri - PRI_BIAS;	1500	RETVAL = next_pri;
1416	if (items > 0)	1501	if (items > 0)
1417	{	1502	{
1418	if (pri < PRI_MIN) pri = PRI_MIN;	1503	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1419	if (pri > PRI_MAX) pri = PRI_MAX;	1504	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1420	next_pri = pri + PRI_BIAS;	1505	next_pri = pri;
1421	}	1506	}
1422	OUTPUT:	1507	OUTPUT:
1423	RETVAL	1508	RETVAL
1424		1509
1425	void	1510	void
1426	aioreq_nice (int nice = 0)	1511	aioreq_nice (int nice = 0)
1427	CODE:	1512	CODE:
1428	nice = next_pri - nice;	1513	nice = next_pri - nice;
1429	if (nice < PRI_MIN) nice = PRI_MIN;	1514	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1430	if (nice > PRI_MAX) nice = PRI_MAX;	1515	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1431	next_pri = nice + PRI_BIAS;	1516	next_pri = nice;
1432		1517
1433	void	1518	void
1434	flush ()	1519	flush ()
		1520	CODE:
		1521	while (eio_nreqs ())
		1522	{
		1523	poll_wait ();
		1524	poll_cb ();
		1525	}
		1526
		1527	int
		1528	poll ()
		1529	CODE:
		1530	poll_wait ();
		1531	RETVAL = poll_cb ();
		1532	OUTPUT:
		1533	RETVAL
		1534
		1535	int
		1536	poll_fileno ()
		1537	CODE:
		1538	RETVAL = s_epipe_fd (&respipe);
		1539	OUTPUT:
		1540	RETVAL
		1541
		1542	int
		1543	poll_cb (...)
1435	PROTOTYPE:	1544	PROTOTYPE:
1436	CODE:	1545	CODE:
1437	while (nreqs)
1438	{
1439	poll_wait ();
1440	poll_cb (0);	1546	RETVAL = poll_cb ();
1441	}
1442
1443	void
1444	poll()
1445	PROTOTYPE:
1446	CODE:
1447	if (nreqs)
1448	{
1449	poll_wait ();
1450	poll_cb (0);
1451	}
1452
1453	int
1454	poll_fileno()
1455	PROTOTYPE:
1456	CODE:
1457	RETVAL = respipe [0];
1458	OUTPUT:	1547	OUTPUT:
1459	RETVAL	1548	RETVAL
1460		1549
		1550	void
		1551	poll_wait ()
		1552	CODE:
		1553	poll_wait ();
		1554
1461	int	1555	int
1462	poll_cb(...)	1556	nreqs ()
1463	PROTOTYPE:
1464	CODE:	1557	CODE:
1465	RETVAL = poll_cb (0);	1558	RETVAL = eio_nreqs ();
1466	OUTPUT:	1559	OUTPUT:
1467	RETVAL	1560	RETVAL
1468		1561
1469	int	1562	int
1470	poll_some(int max = 0)	1563	nready ()
1471	PROTOTYPE: $
1472	CODE:	1564	CODE:
1473	RETVAL = poll_cb (max);	1565	RETVAL = eio_nready ();
1474	OUTPUT:	1566	OUTPUT:
1475	RETVAL	1567	RETVAL
1476		1568
1477	void	1569	int
1478	poll_wait()	1570	npending ()
1479	PROTOTYPE:
1480	CODE:	1571	CODE:
1481	if (nreqs)	1572	RETVAL = eio_npending ();
1482	poll_wait ();
1483
1484	int
1485	nreqs()
1486	PROTOTYPE:
1487	CODE:
1488	RETVAL = nreqs;
1489	OUTPUT:	1573	OUTPUT:
1490	RETVAL	1574	RETVAL
1491		1575
1492	int	1576	int
1493	nready()	1577	nthreads ()
1494	PROTOTYPE:
1495	CODE:	1578	CODE:
1496	if (WORDREAD_UNSAFE) LOCK (reqlock);
1497	RETVAL = nready;	1579	RETVAL = eio_nthreads ();
1498	if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499	OUTPUT:	1580	OUTPUT:
1500	RETVAL	1581	RETVAL
1501		1582
1502	int	1583	int
1503	npending()	1584	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1504	PROTOTYPE:	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)
1505	CODE:	1631	CODE:
1506	if (WORDREAD_UNSAFE) LOCK (reslock);	1632	sv_unmagic (scalar, MMAP_MAGIC);
1507	RETVAL = npending;	1633
1508	if (WORDREAD_UNSAFE) UNLOCK (reslock);	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	}
1509	OUTPUT:	1662	OUTPUT:
1510	RETVAL	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;
1511		1709
1512	PROTOTYPES: DISABLE	1710	PROTOTYPES: DISABLE
1513		1711
1514	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1712	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1515		1713
1516	void	1714	void
1517	cancel (aio_req_ornot req)	1715	cancel (aio_req_ornot req)
1518	CODE:	1716	CODE:
1519	req_cancel (req);	1717	eio_cancel (req);
1520		1718
1521	void	1719	void
1522	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1720	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1523	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
1524	SvREFCNT_dec (req->callback);	1730	SvREFCNT_dec (req->callback);
1525	req->callback = newSVsv (callback);	1731	req->callback = SvREFCNT_inc (cb_cv);
		1732	}
		1733	}
1526		1734
1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1735	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1528		1736
1529	void	1737	void
1530	add (aio_req grp, ...)	1738	add (aio_req grp, ...)
1531	PPCODE:	1739	PPCODE:
1532	{	1740	{
1533	int i;	1741	int i;
1534	aio_req req;
1535		1742
1536	if (grp->fd == 2)	1743	if (grp->int1 == 2)
1537	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");
1538		1745
1539	for (i = 1; i < items; ++i )	1746	for (i = 1; i < items; ++i )
1540	{	1747	{
		1748	aio_req req;
		1749
1541	if (GIMME_V != G_VOID)	1750	if (GIMME_V != G_VOID)
1542	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1751	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1543		1752
1544	req = SvAIO_REQ (ST (i));	1753	req = SvAIO_REQ (ST (i));
1545		1754
1546	if (req)	1755	if (req)
1547	{	1756	eio_grp_add (grp, req);
1548	++grp->length;
1549	req->grp = grp;
1550
1551	req->grp_prev = 0;
1552	req->grp_next = grp->grp_first;
1553
1554	if (grp->grp_first)
1555	grp->grp_first->grp_prev = req;
1556
1557	grp->grp_first = req;
1558	}
1559	}	1757	}
1560	}	1758	}
1561		1759
1562	void	1760	void
1563	cancel_subs (aio_req_ornot req)	1761	cancel_subs (aio_req_ornot req)
…		…
1572	AV *av;	1770	AV *av;
1573		1771
1574	grp->errorno = errno;	1772	grp->errorno = errno;
1575		1773
1576	av = newAV ();	1774	av = newAV ();
		1775	av_extend (av, items - 1);
1577		1776
1578	for (i = 1; i < items; ++i )	1777	for (i = 1; i < items; ++i )
1579	av_push (av, newSVsv (ST (i)));	1778	av_push (av, newSVsv (ST (i)));
1580		1779
1581	SvREFCNT_dec (grp->data);	1780	SvREFCNT_dec (grp->sv1);
1582	grp->data = (SV *)av;	1781	grp->sv1 = (SV *)av;
1583	}	1782	}
1584		1783
1585	void	1784	void
1586	errno (aio_req grp, int errorno = errno)	1785	errno (aio_req grp, int errorno = errno)
1587	CODE:	1786	CODE:
1588	grp->errorno = errorno;	1787	grp->errorno = errorno;
1589		1788
1590	void	1789	void
1591	limit (aio_req grp, int limit)	1790	limit (aio_req grp, int limit)
1592	CODE:	1791	CODE:
1593	grp->fd2 = limit;	1792	eio_grp_limit (grp, limit);
1594	aio_grp_feed (grp);
1595		1793
1596	void	1794	void
1597	feed (aio_req grp, SV *callback=&PL_sv_undef)	1795	feed (aio_req grp, SV *callback=&PL_sv_undef)
1598	CODE:	1796	CODE:
1599	{	1797	{
1600	SvREFCNT_dec (grp->fh2);	1798	SvREFCNT_dec (grp->sv2);
1601	grp->fh2 = newSVsv (callback);	1799	grp->sv2 = newSVsv (callback);
		1800	grp->feed = aio_grp_feed;
1602		1801
1603	if (grp->fd2 <= 0)	1802	if (grp->int2 <= 0)
1604	grp->fd2 = 2;	1803	grp->int2 = 2;
1605		1804
1606	aio_grp_feed (grp);	1805	eio_grp_limit (grp, grp->int2);
1607	}	1806	}
1608		1807

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