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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC vs.
Revision 1.201 by root, Thu Sep 29 09:57:12 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>	21	# include <sys/mman.h>
38	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
39	# include <sys/socket.h>	69	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
42	# else	295	# else
43	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	297	# endif
45	#endif	298	#endif
46		299	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	301	#endif
51		302	#ifndef MAP_LOCKED
52	#if __ia64	303	# define MAP_LOCKED 0
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif	304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
59		314
60	/* buffer size for various temporary buffers */	315	#ifndef makedev
61	#define AIO_BUFSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
		317	#endif
		318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
62		324
63	#define dBUF \	325	#ifndef PAGESIZE
64	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	LOCK (wrklock); \	327	#endif
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		328
71	enum {	329	enum {
72	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
73	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	331	};
84		332
85	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;
93	SV *fh, *fh2;
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;
101	int type;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01,
115	};
116
117	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
119		336
120	enum {	337	static SV *on_next_submit;
121	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,	339	static int max_outstanding;
123		340
124	DEFAULT_PRI = 0,	341	static s_epipe respipe;
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128		342
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int respipe [2];
134
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif
140
141	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
142	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
143
144	/* worker threasd management */
145	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
146
147	typedef struct worker {
148	/* locked by wrklock */
149	struct worker *prev, *next;
150
151	pthread_t tid;
152
153	/* locked by reslock, reqlock or wrklock */
154	aio_req req; /* currently processed request */
155	void *dbuf;
156	DIR *dirp;
157	} worker;
158
159	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
160
161	static void worker_clear (worker *wrk)
162	{
163	if (wrk->dirp)
164	{
165	closedir (wrk->dirp);
166	wrk->dirp = 0;
167	}
168
169	if (wrk->dbuf)
170	{
171	free (wrk->dbuf);
172	wrk->dbuf = 0;
173	}
174	}
175
176	static void worker_free (worker *wrk)
177	{
178	wrk->next->prev = wrk->prev;
179	wrk->prev->next = wrk->next;
180
181	free (wrk);
182	}
183
184	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
185	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
186	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
187
188	/*
189	* a somewhat faster data structure might be nice, but
190	* with 8 priorities this actually needs <20 insns
191	* per shift, the most expensive operation.
192	*/
193	typedef struct {
194	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
195	int size;
196	} reqq;
197
198	static reqq req_queue;
199	static reqq res_queue;
200
201	int reqq_push (reqq *q, aio_req req)
202	{
203	int pri = req->pri;
204	req->next = 0;
205
206	if (q->qe[pri])
207	{
208	q->qe[pri]->next = req;
209	q->qe[pri] = req;
210	}
211	else
212	q->qe[pri] = q->qs[pri] = req;
213
214	return q->size++;
215	}
216
217	aio_req reqq_shift (reqq *q)
218	{
219	int pri;
220
221	if (!q->size)
222	return 0;
223
224	--q->size;
225
226	for (pri = NUM_PRI; pri--; )
227	{
228	aio_req req = q->qs[pri];
229
230	if (req)
231	{
232	if (!(q->qs[pri] = req->next))
233	q->qe[pri] = 0;
234
235	return req;
236	}
237	}
238
239	abort ();
240	}
241
242	static int poll_cb ();
243	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	343	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
246		345
		346	static void
		347	want_poll (void)
		348	{
		349	/* write a dummy byte to the pipe so fh becomes ready */
		350	s_epipe_signal (&respipe);
		351	}
		352
		353	static void
		354	done_poll (void)
		355	{
		356	/* read any signals sent by the worker threads */
		357	s_epipe_drain (&respipe);
		358	}
		359
247	/* must be called at most once */	360	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	361	static SV *
		362	req_sv (aio_req req, HV *stash)
249	{	363	{
250	if (!req->self)	364	if (!req->self)
251	{	365	{
252	req->self = (SV *)newHV ();	366	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	367	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	368	}
255		369
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	370	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	371	}
258		372
259	static aio_req SvAIO_REQ (SV *sv)	373	static SV *
		374	newSVaio_wd (aio_wd wd)
		375	{
		376	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
		377	}
		378
		379	static aio_req
		380	SvAIO_REQ (SV *sv)
260	{	381	{
261	MAGIC *mg;	382	MAGIC *mg;
262		383
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	384	if (!SvROK (sv)
		385	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		386	&& SvSTASH (SvRV (sv)) != aio_req_stash
		387	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	388	croak ("object of class IO::AIO::REQ expected");
265		389
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	390	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		391
268	return mg ? (aio_req)mg->mg_ptr : 0;	392	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	393	}
270		394
		395	static aio_wd
		396	SvAIO_WD (SV *sv)
		397	{
		398	if (!SvROK (sv)
		399	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		400	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		401	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		402
		403	return (aio_wd)(long)SvIVX (SvRV (sv));
		404	}
		405
		406	static void
271	static void aio_grp_feed (aio_req grp)	407	aio_grp_feed (aio_req grp)
272	{	408	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	409	if (grp->sv2 && SvOK (grp->sv2))
274	{	410	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	411	dSP;
280		412
281	ENTER;	413	ENTER;
282	SAVETMPS;	414	SAVETMPS;
283	PUSHMARK (SP);	415	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	416	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	417	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	419	SPAGAIN;
288	FREETMPS;	420	FREETMPS;
289	LEAVE;	421	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	}	422	}
300	}	423	}
301		424
302	static void aio_grp_dec (aio_req grp)	425	static void
		426	req_submit (eio_req *req)
303	{	427	{
304	--grp->length;	428	eio_submit (req);
305		429
306	/* call feeder, if applicable */	430	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	431	{
312	req_invoke (grp);	432	dSP;
313	req_free (grp);	433	SV *cb = sv_2mortal (on_next_submit);
		434
		435	on_next_submit = 0;
		436
		437	PUSHMARK (SP);
		438	PUTBACK;
		439	call_sv (cb, G_DISCARD | G_EVAL);
314	}	440	}
315	}	441	}
316		442
317	static void poll_wait ()	443	static int
		444	req_invoke (eio_req *req)
318	{	445	{
319	fd_set rfd;	446	if (req->flags & FLAG_SV2_RO_OFF)
		447	SvREADONLY_off (req->sv2);
320		448
321	while (nreqs)	449	if (!EIO_CANCELLED (req) && req->callback)
322	{	450	{
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;	451	dSP;
345		452	static SV *sv_result_cache; /* caches the result integer SV */
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	453	SV *sv_result;
347	{
348	errno = req->errorno;
349		454
350	ENTER;	455	ENTER;
351	SAVETMPS;	456	SAVETMPS;
352	PUSHMARK (SP);	457	PUSHMARK (SP);
353	EXTEND (SP, 1);	458	EXTEND (SP, 1);
354		459
		460	/* do not recreate the result IV from scratch each time */
		461	if (expect_true (sv_result_cache))
		462	{
		463	sv_result = sv_result_cache; sv_result_cache = 0;
		464	SvIV_set (sv_result, req->result);
		465	SvIOK_only (sv_result);
		466	}
		467	else
		468	{
		469	sv_result = newSViv (req->result);
		470	SvREADONLY_on (sv_result);
		471	}
		472
355	switch (req->type)	473	switch (req->type)
356	{	474	{
		475	case EIO_WD_OPEN:
		476	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		477	break;
		478
357	case REQ_READDIR:	479	case EIO_READDIR:
358	{	480	{
359	SV *rv = &PL_sv_undef;	481	SV *rv = &PL_sv_undef;
360		482
361	if (req->result >= 0)	483	if (req->result >= 0)
362	{	484	{
363	int i;	485	int i;
364	char *buf = req->data2ptr;	486	char *names = (char *)req->ptr2;
		487	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	488	AV *av = newAV ();
366		489
367	av_extend (av, req->result - 1);	490	av_extend (av, req->result - 1);
368		491
369	for (i = 0; i < req->result; ++i)	492	for (i = 0; i < req->result; ++i)
370	{	493	{
371	SV *sv = newSVpv (buf, 0);	494	if (req->int1 & EIO_READDIR_DENTS)
		495	{
		496	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		497
		498	if (req->int1 & EIO_READDIR_CUSTOM2)
		499	{
		500	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		501	AV *avent = newAV ();
		502
		503	av_extend (avent, 2);
		504
		505	if (!sv_type [ent->type])
		506	{
		507	sv_type [ent->type] = newSViv (ent->type);
		508	SvREADONLY_on (sv_type [ent->type]);
		509	}
		510
		511	av_store (avent, 0, namesv);
		512	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		513	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		514
		515	av_store (av, i, newRV_noinc ((SV *)avent));
		516	}
		517	else
373	av_store (av, i, sv);	518	av_store (av, i, namesv);
		519
		520	++ent;
		521	}
		522	else
		523	{
		524	SV *name = newSVpv (names, 0);
		525	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	526	names += SvCUR (name) + 1;
		527	}
375	}	528	}
376		529
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	530	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	531	}
379		532
380	PUSHs (rv);	533	PUSHs (rv);
		534
		535	if (req->int1 & EIO_READDIR_CUSTOM1)
		536	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	537	}
382	break;	538	break;
383		539
384	case REQ_OPEN:	540	case EIO_OPEN:
385	{	541	{
386	/* convert fd to fh */	542	/* convert fd to fh */
387	SV *fh;	543	SV *fh = &PL_sv_undef;
388		544
389	PUSHs (sv_2mortal (newSViv (req->result)));	545	if (req->result >= 0)
390	PUTBACK;	546	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	547	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	548	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		549	char sym [64];
		550	int symlen;
		551
		552	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		553	gv_init (gv, aio_stash, sym, symlen, 0);
393		554
394	fh = SvREFCNT_inc (POPs);	555	symlen = snprintf (
		556	sym,
		557	sizeof (sym),
		558	"%s&=%d",
		559	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		560	(int)req->result
		561	);
395		562
		563	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		564	fh = (SV *)gv;
		565	}
		566
396	PUSHMARK (SP);	567	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	568	}
399	break;	569	break;
400		570
		571	case EIO_STATVFS:
		572	case EIO_FSTATVFS:
		573	{
		574	SV *rv = &PL_sv_undef;
		575
		576	#ifndef _WIN32
		577	if (req->result >= 0)
		578	{
		579	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		580	HV *hv = newHV ();
		581
		582	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		583
		584	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		585	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		586	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		587	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		588	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		589	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		590	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		591	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		592	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		593	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		594	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		595	}
		596	#endif
		597
		598	PUSHs (rv);
		599	}
		600
		601	break;
		602
401	case REQ_GROUP:	603	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	604	req->int1 = 2; /* mark group as finished */
403		605
404	if (req->data)	606	if (req->sv1)
405	{	607	{
406	int i;	608	int i;
407	AV *av = (AV *)req->data;	609	AV *av = (AV *)req->sv1;
408		610
409	EXTEND (SP, AvFILL (av) + 1);	611	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	612	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	613	PUSHs (*av_fetch (av, i, 0));
412	}	614	}
413	break;	615	break;
414		616
415	case REQ_NOP:	617	case EIO_NOP:
416	case REQ_BUSY:	618	case EIO_BUSY:
417	break;	619	break;
418		620
		621	case EIO_READLINK:
		622	case EIO_REALPATH:
		623	if (req->result > 0)
		624	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		625	break;
		626
		627	case EIO_STAT:
		628	case EIO_LSTAT:
		629	case EIO_FSTAT:
		630	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		631
		632	if (!(PL_laststatval = req->result))
		633	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		634	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		635
		636	PUSHs (sv_result);
		637	break;
		638
		639	case EIO_READ:
		640	{
		641	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		642	*SvEND (req->sv2) = 0;
		643	SvPOK_only (req->sv2);
		644	SvSETMAGIC (req->sv2);
		645	PUSHs (sv_result);
		646	}
		647	break;
		648
		649	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		650	if (req->result > 0)
		651	SvIV_set (sv_result, 0);
		652	/* FALLTHROUGH */
		653
419	default:	654	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	655	PUSHs (sv_result);
421	break;	656	break;
422	}	657	}
423		658
		659	errno = req->errorno;
424		660
425	PUTBACK;	661	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	662	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	663	SPAGAIN;
		664
		665	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		666	SvREFCNT_dec (sv_result);
		667	else
		668	sv_result_cache = sv_result;
428		669
429	FREETMPS;	670	FREETMPS;
430	LEAVE;	671	LEAVE;
		672
		673	PUTBACK;
431	}	674	}
432		675
433	if (req->grp)	676	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	}	677	}
453		678
454	static void req_free (aio_req req)	679	static void
		680	req_destroy (aio_req req)
455	{	681	{
456	if (req->self)	682	if (req->self)
457	{	683	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	684	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	685	SvREFCNT_dec (req->self);
460	}	686	}
461		687
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	688	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	689	SvREFCNT_dec (req->sv2);
		690	SvREFCNT_dec (req->sv3);
		691	SvREFCNT_dec (req->sv4);
465	SvREFCNT_dec (req->callback);	692	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470		693
471	Safefree (req);	694	Safefree (req);
472	}	695	}
473		696
		697	static void
474	static void req_cancel_subs (aio_req grp)	698	req_cancel_subs (aio_req grp)
475	{	699	{
476	aio_req sub;
477
478	if (grp->type != REQ_GROUP)	700	if (grp->type != EIO_GROUP)
479	return;	701	return;
480		702
481	SvREFCNT_dec (grp->fh2);	703	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	704	grp->sv2 = 0;
483		705
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	706	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	707	}
487		708
488	static void req_cancel (aio_req req)	709	static void ecb_cold
		710	create_respipe (void)
489	{	711	{
490	req->flags |= FLAG_CANCELLED;	712	if (s_epipe_renew (&respipe))
491		713	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	714	}
494		715
495	static int poll_cb ()	716	static void
		717	poll_wait (void)
496	{	718	{
497	dSP;	719	while (eio_nreqs ())
498	int count = 0;	720	{
499	int do_croak = 0;	721	int size;
500	aio_req req;
501		722
		723	X_LOCK (reslock);
		724	size = res_queue.size;
		725	X_UNLOCK (reslock);
		726
		727	if (size)
		728	return;
		729
		730	etp_maybe_start_thread ();
		731
		732	s_epipe_wait (&respipe);
		733	}
		734	}
		735
		736	static int
		737	poll_cb (void)
		738	{
502	for (;;)	739	for (;;)
503	{	740	{
504	LOCK (reslock);	741	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		742
507	if (req)	743	if (res > 0)
		744	croak (0);
		745
		746	if (!max_outstanding || max_outstanding > eio_nreqs ())
		747	return res;
		748
		749	poll_wait ();
		750	}
		751	}
		752
		753	static void ecb_cold
		754	reinit (void)
		755	{
		756	create_respipe ();
		757
		758	if (eio_init (want_poll, done_poll) < 0)
		759	croak ("IO::AIO: unable to initialise eio library");
		760	}
		761
		762	/*****************************************************************************/
		763
		764	#if !_POSIX_MAPPED_FILES
		765	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		766	# define munmap(addr,length) (errno = ENOSYS, -1)
		767	#endif
		768
		769	#if !_POSIX_MEMORY_PROTECTION
		770	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		771	# define PROT_NONE 0
		772	# define PROT_WRITE 0
		773	# define MAP_PRIVATE 0
		774	# define MAP_SHARED 0
		775	# define MAP_FIXED 0
		776	#endif
		777
		778	#define MMAP_MAGIC PERL_MAGIC_ext
		779
		780	static int ecb_cold
		781	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		782	{
		783	int old_errno = errno;
		784	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		785	errno = old_errno;
		786
		787	mg->mg_obj = 0; /* just in case */
		788
		789	SvREADONLY_off (sv);
		790
		791	if (SvPVX (sv) != mg->mg_ptr)
		792	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		793
		794	SvCUR_set (sv, 0);
		795	SvPVX (sv) = 0;
		796	SvOK_off (sv);
		797
		798	return 0;
		799	}
		800
		801	static MGVTBL mmap_vtbl = {
		802	0, 0, 0, 0, mmap_free
		803	};
		804
		805	/*****************************************************************************/
		806
		807	static SV *
		808	get_cb (SV *cb_sv)
		809	{
		810	SvGETMAGIC (cb_sv);
		811	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		812	}
		813
		814	#define dREQ \
		815	SV *cb_cv; \
		816	aio_req req; \
		817	int req_pri = next_pri; \
		818	next_pri = EIO_PRI_DEFAULT; \
		819	\
		820	cb_cv = get_cb (callback); \
		821	\
		822	Newz (0, req, 1, eio_req); \
		823	if (!req) \
		824	croak ("out of memory during eio_req allocation"); \
		825	\
		826	req->callback = SvREFCNT_inc (cb_cv); \
		827	req->pri = req_pri
		828
		829	#define REQ_SEND \
		830	PUTBACK; \
		831	req_submit (req); \
		832	SPAGAIN; \
		833	\
		834	if (GIMME_V != G_VOID) \
		835	XPUSHs (req_sv (req, aio_req_stash));
		836
		837	ecb_inline void
		838	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		839	{
		840	if (expect_false (SvROK (path)))
		841	{
		842	AV *av = (AV *)SvRV (path);
		843	SV *wdob;
		844
		845	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		846	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		847
		848	path = AvARRAY (av)[1];
		849	wdob = AvARRAY (av)[0];
		850
		851	if (SvOK (wdob))
508	{	852	{
509	if (!res_queue.size)	853	*wd = SvAIO_WD (wdob);
510	{	854	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
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;
522
523	--nreqs;
524
525	if (req->type == REQ_QUIT)
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}	855	}
532	else	856	else
533	{	857	*wd = EIO_INVALID_WD;
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	}	858	}
554		859
555	return count;	860	*pathsv = newSVsv (path);
		861	*ptr = SvPVbyte_nolen (*pathsv);
556	}	862	}
557		863
558	static void *aio_proc(void *arg);	864	static void ecb_noinline
559		865	req_set_path1 (aio_req req, SV *path)
560	static void start_thread (void)
561	{	866	{
562	sigset_t fullsigset, oldsigset;	867	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
563	pthread_attr_t attr;	868	}
564		869
565	worker *wrk = calloc (1, sizeof (worker));	870	static void ecb_noinline
		871	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		872	{
		873	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
566		874
567	if (!wrk)	875	switch (SvTYPE (rv))
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	{	876	{
581	wrk->prev = &wrk_first;	877	case SVt_PVIO:
582	wrk->next = wrk_first.next;	878	case SVt_PVLV:
583	wrk_first.next->prev = wrk;	879	case SVt_PVGV:
584	wrk_first.next = wrk;	880	req->type = type_fh;
585	started++;	881	req->sv1 = newSVsv (fh_or_path);
		882	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		883	break;
		884
		885	default:
		886	req->type = type_path;
		887	req_set_path1 (req, fh_or_path);
		888	break;
586	}	889	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}	890	}
593		891
594	static void req_send (aio_req req)	892	MODULE = IO::AIO PACKAGE = IO::AIO
595	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598		893
599	++nreqs;	894	PROTOTYPES: ENABLE
600		895
601	LOCK (reqlock);	896	BOOT:
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605	}
606
607	static void end_thread (void)
608	{	897	{
609	aio_req req;	898	static const struct {
		899	const char *name;
		900	IV iv;
		901	} *civ, const_iv[] = {
		902	# define const_niv(name, value) { # name, (IV) value },
		903	# define const_iv(name) { # name, (IV) name },
		904	# define const_eio(name) { # name, (IV) EIO_ ## name },
		905	const_iv (EXDEV)
		906	const_iv (ENOSYS)
		907	const_iv (O_RDONLY)
		908	const_iv (O_WRONLY)
		909	const_iv (O_RDWR)
		910	const_iv (O_CREAT)
		911	const_iv (O_TRUNC)
		912	const_iv (O_EXCL)
		913	const_iv (O_APPEND)
610		914
611	Newz (0, req, 1, aio_cb);	915	const_iv (O_ASYNC)
		916	const_iv (O_DIRECT)
		917	const_iv (O_NOATIME)
612		918
613	req->type = REQ_QUIT;	919	const_iv (O_CLOEXEC)
614	req->pri = PRI_MAX + PRI_BIAS;	920	const_iv (O_NOCTTY)
		921	const_iv (O_NOFOLLOW)
		922	const_iv (O_NONBLOCK)
		923	const_iv (O_EXEC)
		924	const_iv (O_SEARCH)
		925	const_iv (O_DIRECTORY)
		926	const_iv (O_DSYNC)
		927	const_iv (O_RSYNC)
		928	const_iv (O_SYNC)
		929	const_iv (O_TTY_INIT)
615		930
616	req_send (req);	931	const_iv (S_IFIFO)
617	}	932	const_iv (S_IFCHR)
		933	const_iv (S_IFBLK)
		934	const_iv (S_IFLNK)
		935	const_iv (S_IFREG)
		936	const_iv (S_IFDIR)
		937	const_iv (S_IFWHT)
		938	const_iv (S_IFSOCK)
		939	const_iv (S_IFMT)
618		940
619	static void min_parallel (int nthreads)	941	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
620	{	942	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
621	if (wanted < nthreads)	943	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
622	wanted = nthreads;	944	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
623	}	945	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		946	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
624		947
625	static void max_parallel (int nthreads)	948	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
626	{	949	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
627	int cur = started;	950	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		951	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		952	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
628		953
629	if (wanted > nthreads)	954	const_iv (ST_RDONLY)
630	wanted = nthreads;	955	const_iv (ST_NOSUID)
		956	const_iv (ST_NODEV)
		957	const_iv (ST_NOEXEC)
		958	const_iv (ST_SYNCHRONOUS)
		959	const_iv (ST_MANDLOCK)
		960	const_iv (ST_WRITE)
		961	const_iv (ST_APPEND)
		962	const_iv (ST_IMMUTABLE)
		963	const_iv (ST_NOATIME)
		964	const_iv (ST_NODIRATIME)
		965	const_iv (ST_RELATIME)
631		966
632	while (cur > wanted)	967	const_iv (PROT_NONE)
633	{	968	const_iv (PROT_EXEC)
634	end_thread ();	969	const_iv (PROT_READ)
635	cur--;	970	const_iv (PROT_WRITE)
636	}
637		971
638	while (started > wanted)	972	/*const_iv (MAP_FIXED)*/
639	{	973	const_iv (MAP_PRIVATE)
640	poll_wait ();	974	const_iv (MAP_SHARED)
641	poll_cb ();	975	const_iv (MAP_ANONYMOUS)
642	}
643	}
644		976
645	static void create_pipe ()	977	/* linuxish */
646	{	978	const_iv (MAP_HUGETLB)
647	if (pipe (respipe))	979	const_iv (MAP_LOCKED)
648	croak ("unable to initialize result pipe");	980	const_iv (MAP_NORESERVE)
		981	const_iv (MAP_POPULATE)
		982	const_iv (MAP_NONBLOCK)
649		983
650	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	984	const_eio (MCL_FUTURE)
651	croak ("cannot set result pipe to nonblocking mode");	985	const_eio (MCL_CURRENT)
652		986
653	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	987	const_eio (MS_ASYNC)
654	croak ("cannot set result pipe to nonblocking mode");	988	const_eio (MS_INVALIDATE)
655	}	989	const_eio (MS_SYNC)
656		990
657	/*****************************************************************************/	991	const_eio (MT_MODIFY)
658	/* work around various missing functions */
659		992
660	#if !HAVE_PREADWRITE	993	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
661	# define pread aio_pread	994	const_eio (SYNC_FILE_RANGE_WRITE)
662	# define pwrite aio_pwrite	995	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
663		996
664	/*	997	const_eio (FALLOC_FL_KEEP_SIZE)
665	* make our pread/pwrite safe against themselves, but not against
666	* normal read/write by using a mutex. slows down execution a lot,
667	* but that's your problem, not mine.
668	*/
669	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
670		998
671	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	999	const_eio (READDIR_DENTS)
672	{	1000	const_eio (READDIR_DIRS_FIRST)
673	ssize_t res;	1001	const_eio (READDIR_STAT_ORDER)
674	off_t ooffset;	1002	const_eio (READDIR_FOUND_UNKNOWN)
675		1003
676	LOCK (preadwritelock);	1004	const_eio (DT_UNKNOWN)
677	ooffset = lseek (fd, 0, SEEK_CUR);	1005	const_eio (DT_FIFO)
678	lseek (fd, offset, SEEK_SET);	1006	const_eio (DT_CHR)
679	res = read (fd, buf, count);	1007	const_eio (DT_DIR)
680	lseek (fd, ooffset, SEEK_SET);	1008	const_eio (DT_BLK)
681	UNLOCK (preadwritelock);	1009	const_eio (DT_REG)
682		1010	const_eio (DT_LNK)
683	return res;	1011	const_eio (DT_SOCK)
684	}	1012	const_eio (DT_WHT)
685
686	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
687	{
688	ssize_t res;
689	off_t ooffset;
690
691	LOCK (preadwritelock);
692	ooffset = lseek (fd, 0, SEEK_CUR);
693	lseek (fd, offset, SEEK_SET);
694	res = write (fd, buf, count);
695	lseek (fd, offset, SEEK_SET);
696	UNLOCK (preadwritelock);
697
698	return res;
699	}
700	#endif
701
702	#if !HAVE_FDATASYNC
703	# define fdatasync fsync
704	#endif
705
706	#if !HAVE_READAHEAD
707	# define readahead aio_readahead
708
709	static ssize_t readahead (int fd, off_t offset, size_t count)
710	{
711	dBUF;
712
713	while (count > 0)
714	{
715	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
716
717	pread (fd, aio_buf, len, offset);
718	offset += len;
719	count -= len;
720	}
721
722	errno = 0;
723	}
724	#endif
725
726	#if !HAVE_READDIR_R
727	# define readdir_r aio_readdir_r
728
729	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
730
731	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
732	{
733	struct dirent *e;
734	int errorno;
735
736	LOCK (readdirlock);
737
738	e = readdir (dirp);
739	errorno = errno;
740
741	if (e)
742	{
743	*res = ent;
744	strcpy (ent->d_name, e->d_name);
745	}
746	else
747	*res = 0;
748
749	UNLOCK (readdirlock);
750
751	errno = errorno;
752	return e ? 0 : -1;
753	}
754	#endif
755
756	/* sendfile always needs emulation */
757	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
758	{
759	ssize_t res;
760
761	if (!count)
762	return 0;
763
764	#if HAVE_SENDFILE
765	# if __linux
766	res = sendfile (ofd, ifd, &offset, count);
767
768	# elif __freebsd
769	/*
770	* Of course, the freebsd sendfile is a dire hack with no thoughts
771	* wasted on making it similar to other I/O functions.
772	*/
773	{
774	off_t sbytes;
775	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
776
777	if (res < 0 && sbytes)
778	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
779	res = sbytes;
780	}	1013	};
781		1014
782	# elif __hpux	1015	aio_stash = gv_stashpv ("IO::AIO" , 1);
783	res = sendfile (ofd, ifd, offset, count, 0, 0);	1016	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1017	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1018	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
784		1019
785	# elif __solaris	1020	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
786	{	1021	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
787	struct sendfilevec vec;
788	size_t sbytes;
789		1022
790	vec.sfv_fd = ifd;	1023	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
791	vec.sfv_flag = 0;
792	vec.sfv_off = offset;
793	vec.sfv_len = count;
794		1024
795	res = sendfilev (ofd, &vec, 1, &sbytes);	1025	reinit ();
		1026	}
796		1027
797	if (res < 0 && sbytes)	1028	void
		1029	reinit ()
		1030	PROTOTYPE:
		1031
		1032	void
		1033	max_poll_reqs (unsigned int nreqs)
		1034	PROTOTYPE: $
		1035	CODE:
		1036	eio_set_max_poll_reqs (nreqs);
		1037
		1038	void
		1039	max_poll_time (double nseconds)
		1040	PROTOTYPE: $
		1041	CODE:
		1042	eio_set_max_poll_time (nseconds);
		1043
		1044	void
		1045	min_parallel (unsigned int nthreads)
		1046	PROTOTYPE: $
		1047	CODE:
		1048	eio_set_min_parallel (nthreads);
		1049
		1050	void
		1051	max_parallel (unsigned int nthreads)
		1052	PROTOTYPE: $
		1053	CODE:
		1054	eio_set_max_parallel (nthreads);
		1055
		1056	void
		1057	max_idle (unsigned int nthreads)
		1058	PROTOTYPE: $
		1059	CODE:
		1060	eio_set_max_idle (nthreads);
		1061
		1062	void
		1063	idle_timeout (unsigned int seconds)
		1064	PROTOTYPE: $
		1065	CODE:
		1066	eio_set_idle_timeout (seconds);
		1067
		1068	void
		1069	max_outstanding (unsigned int maxreqs)
		1070	PROTOTYPE: $
		1071	CODE:
		1072	max_outstanding = maxreqs;
		1073
		1074	void
		1075	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1076	PPCODE:
		1077	{
		1078	dREQ;
		1079
		1080	req->type = EIO_WD_OPEN;
		1081	req_set_path1 (req, pathname);
		1082
		1083	REQ_SEND;
		1084	}
		1085
		1086	void
		1087	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1088	PPCODE:
		1089	{
		1090	dREQ;
		1091
		1092	req->type = EIO_OPEN;
		1093	req_set_path1 (req, pathname);
		1094	req->int1 = flags;
		1095	req->int2 = mode;
		1096
		1097	REQ_SEND;
		1098	}
		1099
		1100	void
		1101	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1102	ALIAS:
		1103	aio_fsync = EIO_FSYNC
		1104	aio_fdatasync = EIO_FDATASYNC
		1105	aio_syncfs = EIO_SYNCFS
		1106	PPCODE:
		1107	{
		1108	int fd = s_fileno_croak (fh, 0);
		1109	dREQ;
		1110
		1111	req->type = ix;
		1112	req->sv1 = newSVsv (fh);
		1113	req->int1 = fd;
		1114
		1115	REQ_SEND (req);
		1116	}
		1117
		1118	void
		1119	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1120	PPCODE:
		1121	{
		1122	int fd = s_fileno_croak (fh, 0);
		1123	dREQ;
		1124
		1125	req->type = EIO_SYNC_FILE_RANGE;
		1126	req->sv1 = newSVsv (fh);
		1127	req->int1 = fd;
		1128	req->offs = offset;
798	res = sbytes;	1129	req->size = nbytes;
799	}	1130	req->int2 = flags;
800		1131
801	# endif	1132	REQ_SEND (req);
		1133	}
		1134
		1135	void
		1136	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1137	PPCODE:
		1138	{
		1139	int fd = s_fileno_croak (fh, 0);
		1140	dREQ;
		1141
		1142	req->type = EIO_FALLOCATE;
		1143	req->sv1 = newSVsv (fh);
		1144	req->int1 = fd;
		1145	req->int2 = mode;
		1146	req->offs = offset;
		1147	req->size = len;
		1148
		1149	REQ_SEND (req);
		1150	}
		1151
		1152	void
		1153	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1154	PPCODE:
		1155	{
		1156	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1157	int fd = s_fileno_croak (fh, 0);
		1158	dREQ;
		1159
		1160	if (expect_false (close_fd < 0))
		1161	{
		1162	int pipefd [2];
		1163
		1164	if (
		1165	#ifdef _WIN32
		1166	_pipe (pipefd, 1, _O_BINARY) < 0
802	#else	1167	#else
803	res = -1;	1168	pipe (pipefd) < 0
804	errno = ENOSYS;	1169	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
805	#endif	1170	#endif
806		1171	|| close (pipefd [1]) < 0
807	if (res < 0
808	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
809	#if __solaris
810	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
811	#endif
812	)
813	)
814	{
815	/* emulate sendfile. this is a major pain in the ass */
816	dBUF;
817
818	res = 0;
819
820	while (count)
821	{
822	ssize_t cnt;
823
824	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
825
826	if (cnt <= 0)
827	{	1172	)
828	if (cnt && !res) res = -1;	1173	abort (); /*D*/
829	break;
830	}
831		1174
832	cnt = write (ofd, aio_buf, cnt);	1175	close_fd = pipefd [0];
833
834	if (cnt <= 0)
835	{
836	if (cnt && !res) res = -1;
837	break;
838	}
839
840	offset += cnt;
841	res += cnt;
842	count -= cnt;
843	}
844	}
845
846	return res;
847	}
848
849	/* read a full directory */
850	static void scandir_ (aio_req req, worker *self)
851	{
852	DIR *dirp;
853	union
854	{
855	struct dirent d;
856	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
857	} *u;
858	struct dirent *entp;
859	char *name, *names;
860	int memlen = 4096;
861	int memofs = 0;
862	int res = 0;
863	int errorno;
864
865	LOCK (wrklock);
866	self->dirp = dirp = opendir (req->dataptr);
867	self->dbuf = u = malloc (sizeof (*u));
868	UNLOCK (wrklock);
869
870	req->data2ptr = names = malloc (memlen);
871
872	if (dirp && u && names)
873	for (;;)
874	{
875	errno = 0;
876	readdir_r (dirp, &u->d, &entp);
877
878	if (!entp)
879	break;
880
881	name = entp->d_name;
882
883	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
884	{
885	int len = strlen (name) + 1;
886
887	res++;
888
889	while (memofs + len > memlen)
890	{
891	memlen *= 2;
892	LOCK (wrklock);
893	req->data2ptr = names = realloc (names, memlen);
894	UNLOCK (wrklock);
895
896	if (!names)
897	break;
898	}
899
900	memcpy (names + memofs, name, len);
901	memofs += len;
902	}	1176	}
903	}
904		1177
905	if (errno)
906	res = -1;
907
908	req->result = res;
909	}
910
911	/*****************************************************************************/
912
913	static void *aio_proc (void *thr_arg)
914	{
915	aio_req req;
916	int type;
917	worker *self = (worker *)thr_arg;
918
919	do
920	{
921	LOCK (reqlock);
922
923	for (;;)
924	{
925	self->req = req = reqq_shift (&req_queue);
926
927	if (req)
928	break;
929
930	pthread_cond_wait (&reqwait, &reqlock);
931	}
932
933	UNLOCK (reqlock);
934
935	errno = 0; /* strictly unnecessary */
936	type = req->type; /* remember type for QUIT check */
937
938	if (!(req->flags & FLAG_CANCELLED))
939	switch (type)
940	{
941	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
942	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
943
944	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
945	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
946
947	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
948	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
949	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
950
951	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
952	case REQ_CLOSE: req->result = close (req->fd); break;
953	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
954	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
955	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
956	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
957	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
958
959	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
960	case REQ_FSYNC: req->result = fsync (req->fd); break;
961	case REQ_READDIR: scandir_ (req, self); break;
962
963	case REQ_BUSY:
964	{
965	struct timeval tv;
966
967	tv.tv_sec = req->fd;
968	tv.tv_usec = req->fd2;
969
970	req->result = select (0, 0, 0, 0, &tv);
971	}
972
973	case REQ_GROUP:
974	case REQ_NOP:
975	case REQ_QUIT:
976	break;
977
978	default:
979	req->result = ENOSYS;
980	break;
981	}
982
983	req->errorno = errno;
984
985	LOCK (reslock);
986
987	if (!reqq_push (&res_queue, req))
988	/* write a dummy byte to the pipe so fh becomes ready */
989	write (respipe [1], &respipe, 1);
990
991	self->req = 0;
992	worker_clear (self);
993
994	UNLOCK (reslock);
995	}
996	while (type != REQ_QUIT);
997
998	LOCK (wrklock);
999	worker_free (self);
1000	UNLOCK (wrklock);
1001
1002	return 0;
1003	}
1004
1005	/*****************************************************************************/
1006
1007	static void atfork_prepare (void)
1008	{
1009	LOCK (wrklock);
1010	LOCK (reqlock);
1011	LOCK (reslock);
1012	#if !HAVE_PREADWRITE
1013	LOCK (preadwritelock);
1014	#endif
1015	#if !HAVE_READDIR_R
1016	LOCK (readdirlock);
1017	#endif
1018	}
1019
1020	static void atfork_parent (void)
1021	{
1022	#if !HAVE_READDIR_R
1023	UNLOCK (readdirlock);
1024	#endif
1025	#if !HAVE_PREADWRITE
1026	UNLOCK (preadwritelock);
1027	#endif
1028	UNLOCK (reslock);
1029	UNLOCK (reqlock);
1030	UNLOCK (wrklock);
1031	}
1032
1033	static void atfork_child (void)
1034	{
1035	aio_req prv;
1036
1037	while (prv = reqq_shift (&req_queue))
1038	req_free (prv);
1039
1040	while (prv = reqq_shift (&res_queue))
1041	req_free (prv);
1042
1043	while (wrk_first.next != &wrk_first)
1044	{
1045	worker *wrk = wrk_first.next;
1046
1047	if (wrk->req)
1048	req_free (wrk->req);
1049
1050	worker_clear (wrk);
1051	worker_free (wrk);
1052	}
1053
1054	started = 0;
1055	nreqs = 0;
1056
1057	close (respipe [0]);
1058	close (respipe [1]);
1059	create_pipe ();
1060
1061	atfork_parent ();
1062	}
1063
1064	#define dREQ \
1065	aio_req req; \
1066	int req_pri = next_pri; \
1067	next_pri = DEFAULT_PRI + PRI_BIAS; \
1068	\
1069	if (SvOK (callback) && !SvROK (callback)) \
1070	croak ("callback must be undef or of reference type"); \
1071	\
1072	Newz (0, req, 1, aio_cb); \
1073	if (!req) \
1074	croak ("out of memory during aio_req allocation"); \
1075	\
1076	req->callback = newSVsv (callback); \
1077	req->pri = req_pri
1078
1079	#define REQ_SEND \
1080	req_send (req); \
1081	\
1082	if (GIMME_V != G_VOID) \
1083	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1084
1085	MODULE = IO::AIO PACKAGE = IO::AIO
1086
1087	PROTOTYPES: ENABLE
1088
1089	BOOT:
1090	{
1091	HV *stash = gv_stashpv ("IO::AIO", 1);
1092	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1093	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1094	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1095
1096	create_pipe ();
1097	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1098	}
1099
1100	void
1101	min_parallel (nthreads)
1102	int nthreads
1103	PROTOTYPE: $
1104
1105	void
1106	max_parallel (nthreads)
1107	int nthreads
1108	PROTOTYPE: $
1109
1110	void
1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1112	SV * pathname
1113	int flags
1114	int mode
1115	SV * callback
1116	PROTOTYPE: $$$;$
1117	PPCODE:
1118	{
1119	dREQ;
1120
1121	req->type = REQ_OPEN;	1178	req->type = EIO_DUP2;
		1179	req->int1 = close_fd;
1122	req->data = newSVsv (pathname);	1180	req->sv2 = newSVsv (fh);
1123	req->dataptr = SvPVbyte_nolen (req->data);	1181	req->int2 = fd;
1124	req->fd = flags;
1125	req->mode = mode;
1126		1182
1127	REQ_SEND;	1183	REQ_SEND (req);
1128	}	1184	}
1129		1185
1130	void	1186	void
1131	aio_close (fh,callback=&PL_sv_undef)	1187	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1132	SV * fh
1133	SV * callback
1134	PROTOTYPE: $;$
1135	ALIAS:	1188	ALIAS:
1136	aio_close = REQ_CLOSE
1137	aio_fsync = REQ_FSYNC
1138	aio_fdatasync = REQ_FDATASYNC
1139	PPCODE:
1140	{
1141	dREQ;
1142
1143	req->type = ix;
1144	req->fh = newSVsv (fh);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1146
1147	REQ_SEND (req);
1148	}
1149
1150	void
1151	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1152	SV * fh
1153	UV offset
1154	UV length
1155	SV * data
1156	UV dataoffset
1157	SV * callback
1158	ALIAS:
1159	aio_read = REQ_READ	1189	aio_read = EIO_READ
1160	aio_write = REQ_WRITE	1190	aio_write = EIO_WRITE
1161	PROTOTYPE: $$$$$;$
1162	PPCODE:	1191	PPCODE:
1163	{	1192	{
1164	aio_req req;
1165	STRLEN svlen;	1193	STRLEN svlen;
		1194	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1166	char *svptr = SvPVbyte (data, svlen);	1195	char *svptr = SvPVbyte (data, svlen);
1167		1196	UV len = SvUV (length);
1168	SvUPGRADE (data, SVt_PV);
1169	SvPOK_on (data);
1170		1197
1171	if (dataoffset < 0)	1198	if (dataoffset < 0)
1172	dataoffset += svlen;	1199	dataoffset += svlen;
1173		1200
1174	if (dataoffset < 0 || dataoffset > svlen)	1201	if (dataoffset < 0 || dataoffset > svlen)
1175	croak ("data offset outside of string");	1202	croak ("dataoffset outside of data scalar");
1176		1203
1177	if (ix == REQ_WRITE)	1204	if (ix == EIO_WRITE)
1178	{	1205	{
1179	/* write: check length and adjust. */	1206	/* write: check length and adjust. */
1180	if (length < 0 || length + dataoffset > svlen)	1207	if (!SvOK (length) || len + dataoffset > svlen)
1181	length = svlen - dataoffset;	1208	len = svlen - dataoffset;
1182	}	1209	}
1183	else	1210	else
1184	{	1211	{
1185	/* read: grow scalar as necessary */	1212	/* read: check type and grow scalar as necessary */
		1213	SvUPGRADE (data, SVt_PV);
1186	svptr = SvGROW (data, length + dataoffset);	1214	svptr = SvGROW (data, len + dataoffset + 1);
1187	}	1215	}
1188
1189	if (length < 0)
1190	croak ("length must not be negative");
1191		1216
1192	{	1217	{
1193	dREQ;	1218	dREQ;
1194		1219
1195	req->type = ix;	1220	req->type = ix;
1196	req->fh = newSVsv (fh);	1221	req->sv1 = newSVsv (fh);
1197	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1222	req->int1 = fd;
1198	: IoOFP (sv_2io (fh)));	1223	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1199	req->offset = offset;	1224	req->size = len;
1200	req->length = length;
1201	req->data = SvREFCNT_inc (data);	1225	req->sv2 = SvREFCNT_inc (data);
1202	req->dataptr = (char *)svptr + dataoffset;	1226	req->ptr2 = (char *)svptr + dataoffset;
		1227	req->stroffset = dataoffset;
1203		1228
1204	if (!SvREADONLY (data))	1229	if (!SvREADONLY (data))
1205	{	1230	{
1206	SvREADONLY_on (data);	1231	SvREADONLY_on (data);
1207	req->data2ptr = (void *)data;	1232	req->flags |= FLAG_SV2_RO_OFF;
1208	}	1233	}
1209		1234
1210	REQ_SEND;	1235	REQ_SEND;
1211	}	1236	}
1212	}	1237	}
1213		1238
1214	void	1239	void
1215	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1240	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1216	SV * out_fh	1241	ALIAS:
1217	SV * in_fh	1242	aio_readlink = EIO_READLINK
1218	UV in_offset	1243	aio_realpath = EIO_REALPATH
1219	UV length
1220	SV * callback
1221	PROTOTYPE: $$$$;$
1222	PPCODE:	1244	PPCODE:
1223	{	1245	{
		1246	dREQ;
		1247
		1248	req->type = ix;
		1249	req_set_path1 (req, pathname);
		1250
		1251	REQ_SEND;
		1252	}
		1253
		1254	void
		1255	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1256	PPCODE:
		1257	{
		1258	int ifd = s_fileno_croak (in_fh , 0);
		1259	int ofd = s_fileno_croak (out_fh, 1);
1224	dREQ;	1260	dREQ;
1225		1261
1226	req->type = REQ_SENDFILE;	1262	req->type = EIO_SENDFILE;
1227	req->fh = newSVsv (out_fh);	1263	req->sv1 = newSVsv (out_fh);
1228	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1264	req->int1 = ofd;
1229	req->fh2 = newSVsv (in_fh);	1265	req->sv2 = newSVsv (in_fh);
1230	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1266	req->int2 = ifd;
1231	req->offset = in_offset;	1267	req->offs = in_offset;
1232	req->length = length;	1268	req->size = length;
1233		1269
1234	REQ_SEND;	1270	REQ_SEND;
1235	}	1271	}
1236		1272
1237	void	1273	void
1238	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1274	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1239	SV * fh
1240	UV offset
1241	IV length
1242	SV * callback
1243	PROTOTYPE: $$$;$
1244	PPCODE:	1275	PPCODE:
1245	{	1276	{
		1277	int fd = s_fileno_croak (fh, 0);
1246	dREQ;	1278	dREQ;
1247		1279
1248	req->type = REQ_READAHEAD;	1280	req->type = EIO_READAHEAD;
1249	req->fh = newSVsv (fh);	1281	req->sv1 = newSVsv (fh);
1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1282	req->int1 = fd;
1251	req->offset = offset;	1283	req->offs = offset;
1252	req->length = length;	1284	req->size = length;
1253		1285
1254	REQ_SEND;	1286	REQ_SEND;
1255	}	1287	}
1256		1288
1257	void	1289	void
1258	aio_stat (fh_or_path,callback=&PL_sv_undef)	1290	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1259	SV * fh_or_path
1260	SV * callback
1261	ALIAS:	1291	ALIAS:
1262	aio_stat = REQ_STAT	1292	aio_stat = EIO_STAT
1263	aio_lstat = REQ_LSTAT	1293	aio_lstat = EIO_LSTAT
		1294	aio_statvfs = EIO_STATVFS
1264	PPCODE:	1295	PPCODE:
1265	{	1296	{
1266	dREQ;	1297	dREQ;
1267		1298
1268	New (0, req->statdata, 1, Stat_t);
1269	if (!req->statdata)
1270	{
1271	req_free (req);
1272	croak ("out of memory during aio_req->statdata allocation");
1273	}
1274
1275	if (SvPOK (fh_or_path))
1276	{
1277	req->type = ix;
1278	req->data = newSVsv (fh_or_path);
1279	req->dataptr = SvPVbyte_nolen (req->data);
1280	}
1281	else
1282	{
1283	req->type = REQ_FSTAT;
1284	req->fh = newSVsv (fh_or_path);	1299	req->sv1 = newSVsv (fh_or_path);
1285	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1300	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1286	}
1287
1288	REQ_SEND;	1301	REQ_SEND;
1289	}	1302	}
1290		1303
		1304	UV
		1305	major (UV dev)
		1306	ALIAS:
		1307	minor = 1
		1308	CODE:
		1309	RETVAL = ix ? major (dev) : minor (dev);
		1310	OUTPUT:
		1311	RETVAL
		1312
		1313	UV
		1314	makedev (UV maj, UV min)
		1315	CODE:
		1316	RETVAL = makedev (maj, min);
		1317	OUTPUT:
		1318	RETVAL
		1319
1291	void	1320	void
		1321	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1322	PPCODE:
		1323	{
		1324	dREQ;
		1325
		1326	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1327	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1328	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1329
		1330	REQ_SEND;
		1331	}
		1332
		1333	void
		1334	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1335	PPCODE:
		1336	{
		1337	dREQ;
		1338
		1339	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1340	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1341
		1342	REQ_SEND;
		1343	}
		1344
		1345	void
		1346	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1347	PPCODE:
		1348	{
		1349	dREQ;
		1350
		1351	req->int2 = mode;
		1352	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1353
		1354	REQ_SEND;
		1355	}
		1356
		1357	void
		1358	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1359	PPCODE:
		1360	{
		1361	dREQ;
		1362
		1363	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1364	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1365	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1366
		1367	REQ_SEND;
		1368	}
		1369
		1370	void
		1371	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1372	PPCODE:
		1373	{
		1374	dREQ;
		1375
		1376	req->type = EIO_READDIR;
		1377	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1378
		1379	if (flags & EIO_READDIR_DENTS)
		1380	req->int1 |= EIO_READDIR_CUSTOM2;
		1381
		1382	req_set_path1 (req, pathname);
		1383
		1384	REQ_SEND;
		1385	}
		1386
		1387	void
		1388	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1389	PPCODE:
		1390	{
		1391	dREQ;
		1392
		1393	req->type = EIO_MKDIR;
		1394	req->int2 = mode;
		1395	req_set_path1 (req, pathname);
		1396
		1397	REQ_SEND;
		1398	}
		1399
		1400	void
1292	aio_unlink (pathname,callback=&PL_sv_undef)	1401	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1293	SV * pathname
1294	SV * callback
1295	ALIAS:	1402	ALIAS:
1296	aio_unlink = REQ_UNLINK	1403	aio_unlink = EIO_UNLINK
1297	aio_rmdir = REQ_RMDIR	1404	aio_rmdir = EIO_RMDIR
1298	aio_readdir = REQ_READDIR	1405	aio_readdir = EIO_READDIR
1299	PPCODE:	1406	PPCODE:
1300	{	1407	{
1301	dREQ;	1408	dREQ;
1302		1409
1303	req->type = ix;	1410	req->type = ix;
1304	req->data = newSVsv (pathname);	1411	req_set_path1 (req, pathname);
1305	req->dataptr = SvPVbyte_nolen (req->data);	1412
		1413	REQ_SEND;
		1414	}
		1415
		1416	void
		1417	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1418	ALIAS:
		1419	aio_link = EIO_LINK
		1420	aio_symlink = EIO_SYMLINK
		1421	aio_rename = EIO_RENAME
		1422	PPCODE:
		1423	{
		1424	dREQ;
		1425	eio_wd wd2 = 0;
		1426
		1427	req->type = ix;
		1428	req_set_path1 (req, oldpath);
		1429	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1430	req->int3 = (long)wd2;
1306		1431
1307	REQ_SEND;	1432	REQ_SEND;
1308	}	1433	}
1309		1434
1310	void	1435	void
1311	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1436	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1312	SV * oldpath
1313	SV * newpath
1314	SV * callback
1315	ALIAS:
1316	aio_link = REQ_LINK
1317	aio_symlink = REQ_SYMLINK
1318	aio_rename = REQ_RENAME
1319	PPCODE:	1437	PPCODE:
1320	{	1438	{
1321	dREQ;	1439	dREQ;
1322		1440
1323	req->type = ix;	1441	req->type = EIO_MKNOD;
1324	req->fh = newSVsv (oldpath);	1442	req->int2 = (mode_t)mode;
1325	req->data2ptr = SvPVbyte_nolen (req->fh);	1443	req->offs = dev;
1326	req->data = newSVsv (newpath);	1444	req_set_path1 (req, pathname);
1327	req->dataptr = SvPVbyte_nolen (req->data);
1328		1445
1329	REQ_SEND;	1446	REQ_SEND;
1330	}	1447	}
1331		1448
1332	void	1449	void
		1450	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1451	ALIAS:
		1452	aio_mtouch = EIO_MTOUCH
		1453	aio_msync = EIO_MSYNC
		1454	PPCODE:
		1455	{
		1456	STRLEN svlen;
		1457	char *svptr = SvPVbyte (data, svlen);
		1458	UV len = SvUV (length);
		1459
		1460	if (offset < 0)
		1461	offset += svlen;
		1462
		1463	if (offset < 0 || offset > svlen)
		1464	croak ("offset outside of scalar");
		1465
		1466	if (!SvOK (length) || len + offset > svlen)
		1467	len = svlen - offset;
		1468
		1469	{
		1470	dREQ;
		1471
		1472	req->type = ix;
		1473	req->sv2 = SvREFCNT_inc (data);
		1474	req->ptr2 = (char *)svptr + offset;
		1475	req->size = len;
		1476	req->int1 = flags;
		1477
		1478	REQ_SEND;
		1479	}
		1480	}
		1481
		1482	void
		1483	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1484	PPCODE:
		1485	{
		1486	STRLEN svlen;
		1487	char *svptr = SvPVbyte (data, svlen);
		1488	UV len = SvUV (length);
		1489
		1490	if (offset < 0)
		1491	offset += svlen;
		1492
		1493	if (offset < 0 || offset > svlen)
		1494	croak ("offset outside of scalar");
		1495
		1496	if (!SvOK (length) || len + offset > svlen)
		1497	len = svlen - offset;
		1498
		1499	{
		1500	dREQ;
		1501
		1502	req->type = EIO_MLOCK;
		1503	req->sv2 = SvREFCNT_inc (data);
		1504	req->ptr2 = (char *)svptr + offset;
		1505	req->size = len;
		1506
		1507	REQ_SEND;
		1508	}
		1509	}
		1510
		1511	void
		1512	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1513	PPCODE:
		1514	{
		1515	dREQ;
		1516
		1517	req->type = EIO_MLOCKALL;
		1518	req->int1 = flags;
		1519
		1520	REQ_SEND;
		1521	}
		1522
		1523	void
1333	aio_busy (delay,callback=&PL_sv_undef)	1524	aio_busy (double delay, SV *callback=&PL_sv_undef)
1334	double delay
1335	SV * callback
1336	PPCODE:	1525	PPCODE:
1337	{	1526	{
1338	dREQ;	1527	dREQ;
1339		1528
1340	req->type = REQ_BUSY;	1529	req->type = EIO_BUSY;
1341	req->fd = delay < 0. ? 0 : delay;	1530	req->nv1 = delay < 0. ? 0. : delay;
1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1343		1531
1344	REQ_SEND;	1532	REQ_SEND;
1345	}	1533	}
1346		1534
1347	void	1535	void
1348	aio_group (callback=&PL_sv_undef)	1536	aio_group (SV *callback=&PL_sv_undef)
1349	SV * callback
1350	PROTOTYPE: ;$
1351	PPCODE:	1537	PPCODE:
1352	{	1538	{
1353	dREQ;	1539	dREQ;
1354		1540
1355	req->type = REQ_GROUP;	1541	req->type = EIO_GROUP;
		1542
1356	req_send (req);	1543	req_submit (req);
1357
1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1544	XPUSHs (req_sv (req, aio_grp_stash));
1359	}	1545	}
1360		1546
1361	void	1547	void
1362	aio_nop (callback=&PL_sv_undef)	1548	aio_nop (SV *callback=&PL_sv_undef)
1363	SV * callback	1549	ALIAS:
		1550	aio_nop = EIO_NOP
		1551	aio_sync = EIO_SYNC
1364	PPCODE:	1552	PPCODE:
1365	{	1553	{
1366	dREQ;	1554	dREQ;
1367		1555
1368	req->type = REQ_NOP;	1556	req->type = ix;
1369		1557
1370	REQ_SEND;	1558	REQ_SEND;
1371	}	1559	}
1372		1560
1373	void	1561	int
1374	aioreq_pri (int pri = DEFAULT_PRI)	1562	aioreq_pri (int pri = 0)
1375	CODE:	1563	CODE:
		1564	RETVAL = next_pri;
		1565	if (items > 0)
		1566	{
1376	if (pri < PRI_MIN) pri = PRI_MIN;	1567	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1377	if (pri > PRI_MAX) pri = PRI_MAX;	1568	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1378	next_pri = pri + PRI_BIAS;	1569	next_pri = pri;
		1570	}
		1571	OUTPUT:
		1572	RETVAL
1379		1573
1380	void	1574	void
1381	aioreq_nice (int nice = 0)	1575	aioreq_nice (int nice = 0)
1382	CODE:	1576	CODE:
1383	nice = next_pri - nice;	1577	nice = next_pri - nice;
1384	if (nice < PRI_MIN) nice = PRI_MIN;	1578	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1385	if (nice > PRI_MAX) nice = PRI_MAX;	1579	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1386	next_pri = nice + PRI_BIAS;	1580	next_pri = nice;
1387		1581
1388	void	1582	void
1389	flush ()	1583	flush ()
1390	PROTOTYPE:
1391	CODE:	1584	CODE:
1392	while (nreqs)	1585	while (eio_nreqs ())
1393	{	1586	{
1394	poll_wait ();	1587	poll_wait ();
1395	poll_cb ();	1588	poll_cb ();
1396	}	1589	}
1397		1590
1398	void
1399	poll()
1400	PROTOTYPE:
1401	CODE:
1402	if (nreqs)
1403	{
1404	poll_wait ();
1405	poll_cb ();
1406	}
1407
1408	int	1591	int
1409	poll_fileno()	1592	poll ()
1410	PROTOTYPE:
1411	CODE:	1593	CODE:
1412	RETVAL = respipe [0];	1594	poll_wait ();
1413	OUTPUT:
1414	RETVAL
1415
1416	int
1417	poll_cb(...)
1418	PROTOTYPE:
1419	CODE:
1420	RETVAL = poll_cb ();	1595	RETVAL = poll_cb ();
1421	OUTPUT:	1596	OUTPUT:
1422	RETVAL	1597	RETVAL
1423		1598
1424	void
1425	poll_wait()
1426	PROTOTYPE:
1427	CODE:
1428	if (nreqs)
1429	poll_wait ();
1430
1431	int	1599	int
1432	nreqs()	1600	poll_fileno ()
1433	PROTOTYPE:
1434	CODE:	1601	CODE:
1435	RETVAL = nreqs;	1602	RETVAL = s_epipe_fd (&respipe);
1436	OUTPUT:	1603	OUTPUT:
1437	RETVAL	1604	RETVAL
1438		1605
		1606	int
		1607	poll_cb (...)
		1608	PROTOTYPE:
		1609	CODE:
		1610	RETVAL = poll_cb ();
		1611	OUTPUT:
		1612	RETVAL
		1613
		1614	void
		1615	poll_wait ()
		1616	CODE:
		1617	poll_wait ();
		1618
		1619	int
		1620	nreqs ()
		1621	CODE:
		1622	RETVAL = eio_nreqs ();
		1623	OUTPUT:
		1624	RETVAL
		1625
		1626	int
		1627	nready ()
		1628	CODE:
		1629	RETVAL = eio_nready ();
		1630	OUTPUT:
		1631	RETVAL
		1632
		1633	int
		1634	npending ()
		1635	CODE:
		1636	RETVAL = eio_npending ();
		1637	OUTPUT:
		1638	RETVAL
		1639
		1640	int
		1641	nthreads ()
		1642	CODE:
		1643	RETVAL = eio_nthreads ();
		1644	OUTPUT:
		1645	RETVAL
		1646
		1647	int
		1648	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1649	CODE:
		1650	RETVAL = posix_fadvise (fh, offset, length, advice);
		1651	OUTPUT:
		1652	RETVAL
		1653
		1654	IV
		1655	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1656	CODE:
		1657	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1658	OUTPUT:
		1659	RETVAL
		1660
		1661	void
		1662	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1663	PPCODE:
		1664	sv_unmagic (scalar, MMAP_MAGIC);
		1665	{
		1666	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1667	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1668	if (addr == (void *)-1)
		1669	XSRETURN_NO;
		1670
		1671	sv_force_normal (scalar);
		1672
		1673	/* we store the length in mg_obj, as namlen is I32 :/ */
		1674	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1675	->mg_obj = (SV *)length;
		1676
		1677	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1678
		1679	if (!(prot & PROT_WRITE))
		1680	SvREADONLY_on (scalar);
		1681
		1682	if (SvLEN (scalar))
		1683	Safefree (SvPVX (scalar));
		1684
		1685	SvPVX (scalar) = (char *)addr;
		1686	SvCUR_set (scalar, length);
		1687	SvLEN_set (scalar, 0);
		1688	SvPOK_only (scalar);
		1689
		1690	XSRETURN_YES;
		1691	}
		1692
		1693	void
		1694	munmap (SV *scalar)
		1695	CODE:
		1696	sv_unmagic (scalar, MMAP_MAGIC);
		1697
		1698	int
		1699	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1700	ALIAS:
		1701	mprotect = 1
		1702	CODE:
		1703	{
		1704	STRLEN svlen;
		1705	void *addr = SvPVbyte (scalar, svlen);
		1706	size_t len = SvUV (length);
		1707
		1708	if (offset < 0)
		1709	offset += svlen;
		1710
		1711	if (offset < 0 || offset > svlen)
		1712	croak ("offset outside of scalar");
		1713
		1714	if (!SvOK (length) || len + offset > svlen)
		1715	len = svlen - offset;
		1716
		1717	addr = (void *)(((intptr_t)addr) + offset);
		1718	eio_page_align (&addr, &len);
		1719
		1720	switch (ix)
		1721	{
		1722	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1723	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1724	}
		1725	}
		1726	OUTPUT:
		1727	RETVAL
		1728
		1729	int
		1730	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1731	CODE:
		1732	{
		1733	STRLEN svlen;
		1734	void *addr = SvPVbyte (scalar, svlen);
		1735	size_t len = SvUV (length);
		1736
		1737	if (offset < 0)
		1738	offset += svlen;
		1739
		1740	if (offset < 0 || offset > svlen)
		1741	croak ("offset outside of scalar");
		1742
		1743	if (!SvOK (length) || len + offset > svlen)
		1744	len = svlen - offset;
		1745
		1746	addr = (void *)(((intptr_t)addr) + offset);
		1747	eio_page_align (&addr, &len);
		1748	#if _POSIX_MEMLOCK_RANGE
		1749	RETVAL = munlock (addr, len);
		1750	#else
		1751	RETVAL = ((errno = ENOSYS), -1);
		1752	#endif
		1753	}
		1754	OUTPUT:
		1755	RETVAL
		1756
		1757	int
		1758	munlockall ()
		1759	CODE:
		1760	#if _POSIX_MEMLOCK
		1761	munlockall ();
		1762	#else
		1763	RETVAL = -1;
		1764	errno = ENOSYS;
		1765	#endif
		1766	OUTPUT:
		1767	RETVAL
		1768
		1769	void _on_next_submit (SV *cb)
		1770	CODE:
		1771	SvREFCNT_dec (on_next_submit);
		1772	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1773
1439	PROTOTYPES: DISABLE	1774	PROTOTYPES: DISABLE
1440		1775
		1776	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1777
		1778	BOOT:
		1779	{
		1780	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1781	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1782	}
		1783
		1784	void
		1785	DESTROY (SV *self)
		1786	CODE:
		1787	{
		1788	aio_wd wd = SvAIO_WD (self);
		1789	#if HAVE_AT
		1790	SV *callback = &PL_sv_undef;
		1791	dREQ; /* clobbers next_pri :/ */
		1792	req->type = EIO_WD_CLOSE;
		1793	req->wd = wd;
		1794	REQ_SEND;
		1795	#else
		1796	eio_wd_close_sync (wd);
		1797	#endif
		1798	}
		1799
1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1800	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1442		1801
1443	void	1802	void
1444	cancel (aio_req_ornot req)	1803	cancel (aio_req_ornot req)
1445	CODE:	1804	CODE:
1446	req_cancel (req);	1805	eio_cancel (req);
1447		1806
1448	void	1807	void
1449	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1808	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1450	CODE:	1809	PPCODE:
		1810	{
		1811	if (GIMME_V != G_VOID)
		1812	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1813
		1814	if (items > 1)
		1815	{
		1816	SV *cb_cv =get_cb (callback);
		1817
1451	SvREFCNT_dec (req->callback);	1818	SvREFCNT_dec (req->callback);
1452	req->callback = newSVsv (callback);	1819	req->callback = SvREFCNT_inc (cb_cv);
		1820	}
		1821	}
1453		1822
1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1823	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1455		1824
1456	void	1825	void
1457	add (aio_req grp, ...)	1826	add (aio_req grp, ...)
1458	PPCODE:	1827	PPCODE:
1459	{	1828	{
1460	int i;	1829	int i;
1461	aio_req req;
1462		1830
1463	if (grp->fd == 2)	1831	if (grp->int1 == 2)
1464	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1832	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1465		1833
1466	for (i = 1; i < items; ++i )	1834	for (i = 1; i < items; ++i )
1467	{	1835	{
		1836	aio_req req;
		1837
1468	if (GIMME_V != G_VOID)	1838	if (GIMME_V != G_VOID)
1469	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1839	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1470		1840
1471	req = SvAIO_REQ (ST (i));	1841	req = SvAIO_REQ (ST (i));
1472		1842
1473	if (req)	1843	if (req)
1474	{	1844	eio_grp_add (grp, req);
1475	++grp->length;
1476	req->grp = grp;
1477
1478	req->grp_prev = 0;
1479	req->grp_next = grp->grp_first;
1480
1481	if (grp->grp_first)
1482	grp->grp_first->grp_prev = req;
1483
1484	grp->grp_first = req;
1485	}
1486	}	1845	}
1487	}	1846	}
1488		1847
1489	void	1848	void
1490	cancel_subs (aio_req_ornot req)	1849	cancel_subs (aio_req_ornot req)
…		…
1494	void	1853	void
1495	result (aio_req grp, ...)	1854	result (aio_req grp, ...)
1496	CODE:	1855	CODE:
1497	{	1856	{
1498	int i;	1857	int i;
		1858	AV *av;
		1859
		1860	grp->errorno = errno;
		1861
1499	AV *av = newAV ();	1862	av = newAV ();
		1863	av_extend (av, items - 1);
1500		1864
1501	for (i = 1; i < items; ++i )	1865	for (i = 1; i < items; ++i )
1502	av_push (av, newSVsv (ST (i)));	1866	av_push (av, newSVsv (ST (i)));
1503		1867
1504	SvREFCNT_dec (grp->data);	1868	SvREFCNT_dec (grp->sv1);
1505	grp->data = (SV *)av;	1869	grp->sv1 = (SV *)av;
1506	}	1870	}
		1871
		1872	void
		1873	errno (aio_req grp, int errorno = errno)
		1874	CODE:
		1875	grp->errorno = errorno;
1507		1876
1508	void	1877	void
1509	limit (aio_req grp, int limit)	1878	limit (aio_req grp, int limit)
1510	CODE:	1879	CODE:
1511	grp->fd2 = limit;	1880	eio_grp_limit (grp, limit);
1512	aio_grp_feed (grp);
1513		1881
1514	void	1882	void
1515	feed (aio_req grp, SV *callback=&PL_sv_undef)	1883	feed (aio_req grp, SV *callback=&PL_sv_undef)
1516	CODE:	1884	CODE:
1517	{	1885	{
1518	SvREFCNT_dec (grp->fh2);	1886	SvREFCNT_dec (grp->sv2);
1519	grp->fh2 = newSVsv (callback);	1887	grp->sv2 = newSVsv (callback);
		1888	grp->feed = aio_grp_feed;
1520		1889
1521	if (grp->fd2 <= 0)	1890	if (grp->int2 <= 0)
1522	grp->fd2 = 2;	1891	grp->int2 = 2;
1523		1892
1524	aio_grp_feed (grp);	1893	eio_grp_limit (grp, grp->int2);
1525	}	1894	}
1526		1895

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