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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.208 by root, Sat Jan 7 18:42:43 2012 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	#define EIO_STRUCT_STAT struct _stati64
		68	#define EIO_STRUCT_STATI64
		69
		70	#else
		71
39	# include <sys/socket.h>	72	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	73	#include <sys/select.h>
		74	#include <unistd.h>
		75	#include <utime.h>
		76	#include <signal.h>
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	#endif
		81
		82	/* use NV for 32 bit perls as it allows larger offsets */
		83	#if IVSIZE >= 8
		84	# define VAL64 IV
		85	# define SvVAL64 SvIV
		86	# define newSVval64 newSViv
		87	#else
		88	# define VAL64 NV
		89	# define SvVAL64 SvNV
		90	# define newSVval64 newSVnv
		91	#endif
		92
		93	/*****************************************************************************/
		94
		95	#if __GNUC__ >= 3
		96	# define expect(expr,value) __builtin_expect ((expr),(value))
		97	#else
		98	# define expect(expr,value) (expr)
		99	#endif
		100
		101	#define expect_false(expr) expect ((expr) != 0, 0)
		102	#define expect_true(expr) expect ((expr) != 0, 1)
		103
		104	/*****************************************************************************/
		105
		106	typedef SV SV8; /* byte-sv, used for argument-checking */
		107	typedef int aio_rfd; /* read file desriptor */
		108	typedef int aio_wfd; /* write file descriptor */
		109
		110	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		111
		112	#define EIO_REQ_MEMBERS \
		113	SV *callback; \
		114	SV *sv1, *sv2; \
		115	SV *sv3, *sv4; \
		116	STRLEN stroffset; \
		117	SV *self;
		118
		119	#define EIO_NO_WRAPPERS 1
		120
		121	#include "libeio/config.h"
		122	#include "libeio/eio.h"
		123
		124	static int req_invoke (eio_req *req);
		125	#define EIO_FINISH(req) req_invoke (req)
		126	static void req_destroy (eio_req *grp);
		127	#define EIO_DESTROY(req) req_destroy (req)
		128
		129	#include "libeio/eio.c"
		130
		131	/* Linux/others */
		132	#ifndef O_ASYNC
		133	# define O_ASYNC 0
		134	#endif
		135	#ifndef O_DIRECT
		136	# define O_DIRECT 0
		137	#endif
		138	#ifndef O_NOATIME
		139	# define O_NOATIME 0
		140	#endif
		141
		142	/* POSIX */
		143	#ifndef O_CLOEXEC
		144	# define O_CLOEXEC 0
		145	#endif
		146	#ifndef O_NOFOLLOW
		147	# define O_NOFOLLOW 0
		148	#endif
		149	#ifndef O_NOCTTY
		150	# define O_NOCTTY 0
		151	#endif
		152	#ifndef O_NONBLOCK
		153	# define O_NONBLOCK 0
		154	#endif
		155	#ifndef O_EXEC
		156	# define O_EXEC 0
		157	#endif
		158	#ifndef O_SEARCH
		159	# define O_SEARCH 0
		160	#endif
		161	#ifndef O_DIRECTORY
		162	# define O_DIRECTORY 0
		163	#endif
		164	#ifndef O_DSYNC
		165	# define O_DSYNC 0
		166	#endif
		167	#ifndef O_RSYNC
		168	# define O_RSYNC 0
		169	#endif
		170	#ifndef O_SYNC
		171	# define O_SYNC 0
		172	#endif
		173	#ifndef O_TTY_INIT
		174	# define O_TTY_INIT 0
		175	#endif
		176
		177	#ifndef POSIX_FADV_NORMAL
		178	# define POSIX_FADV_NORMAL 0
		179	#endif
		180	#ifndef POSIX_FADV_SEQUENTIAL
		181	# define POSIX_FADV_SEQUENTIAL 0
		182	#endif
		183	#ifndef POSIX_FADV_RANDOM
		184	# define POSIX_FADV_RANDOM 0
		185	#endif
		186	#ifndef POSIX_FADV_NOREUSE
		187	# define POSIX_FADV_NOREUSE 0
		188	#endif
		189	#ifndef POSIX_FADV_WILLNEED
		190	# define POSIX_FADV_WILLNEED 0
		191	#endif
		192	#ifndef POSIX_FADV_DONTNEED
		193	# define POSIX_FADV_DONTNEED 0
		194	#endif
		195
		196	#if !HAVE_POSIX_FADVISE
		197	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		198	#endif
		199
		200	#ifndef POSIX_MADV_NORMAL
		201	# define POSIX_MADV_NORMAL 0
		202	#endif
		203	#ifndef POSIX_MADV_SEQUENTIAL
		204	# define POSIX_MADV_SEQUENTIAL 0
		205	#endif
		206	#ifndef POSIX_MADV_RANDOM
		207	# define POSIX_MADV_RANDOM 0
		208	#endif
		209	#ifndef POSIX_MADV_WILLNEED
		210	# define POSIX_MADV_WILLNEED 0
		211	#endif
		212	#ifndef POSIX_MADV_DONTNEED
		213	# define POSIX_MADV_DONTNEED 0
		214	#endif
		215
		216	#if !HAVE_POSIX_MADVISE
		217	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		218	#endif
		219
		220	#ifndef PROT_NONE
		221	# define PROT_NONE 0
		222	#endif
		223	#ifndef PROT_READ
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_WRITE
		227	# define PROT_READ 0
		228	#endif
		229	#ifndef PROT_EXEC
		230	# define PROT_EXEC 0
		231	#endif
		232
		233	#ifndef ST_RDONLY
		234	# define ST_RDONLY 0
		235	#endif
		236	#ifndef ST_NOSUID
		237	# define ST_NOSUID 0
		238	#endif
		239	#ifndef ST_NODEV
		240	# define ST_NODEV 0
		241	#endif
		242	#ifndef ST_NOEXEC
		243	# define ST_NOEXEC 0
		244	#endif
		245	#ifndef ST_SYNCHRONOUS
		246	# define ST_SYNCHRONOUS 0
		247	#endif
		248	#ifndef ST_MANDLOCK
		249	# define ST_MANDLOCK 0
		250	#endif
		251	#ifndef ST_WRITE
		252	# define ST_WRITE 0
		253	#endif
		254	#ifndef ST_APPEND
		255	# define ST_APPEND 0
		256	#endif
		257	#ifndef ST_IMMUTABLE
		258	# define ST_IMMUTABLE 0
		259	#endif
		260	#ifndef ST_NOATIME
		261	# define ST_NOATIME 0
		262	#endif
		263	#ifndef ST_NODIRATIME
		264	# define ST_NODIRATIME 0
		265	#endif
		266	#ifndef ST_RELATIME
		267	# define ST_RELATIME 0
		268	#endif
		269
		270	#ifndef S_IFIFO
		271	# define S_IFIFO 0
		272	#endif
		273	#ifndef S_IFCHR
		274	# define S_IFCHR 0
		275	#endif
		276	#ifndef S_IFBLK
		277	# define S_IFBLK 0
		278	#endif
		279	#ifndef S_IFLNK
		280	# define S_IFLNK 0
		281	#endif
		282	#ifndef S_IFREG
		283	# define S_IFREG 0
		284	#endif
		285	#ifndef S_IFDIR
		286	# define S_IFDIR 0
		287	#endif
		288	#ifndef S_IFWHT
		289	# define S_IFWHT 0
		290	#endif
		291	#ifndef S_IFSOCK
		292	# define S_IFSOCK 0
		293	#endif
		294
		295	#ifndef MAP_ANONYMOUS
		296	# ifdef MAP_ANON
		297	# define MAP_ANONYMOUS MAP_ANON
42	# else	298	# else
43	# error sendfile support requested but not available	299	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	300	# endif
45	#endif	301	#endif
46		302	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	303	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	304	#endif
51		305	#ifndef MAP_LOCKED
52	#ifndef PTHREAD_STACK_MIN	306	# define MAP_LOCKED 0
53	/* care for broken platforms, e.g. windows */
54	# define PTHREAD_STACK_MIN 16384
55	#endif	307	#endif
56		308	#ifndef MAP_NORESERVE
57	#if __ia64	309	# define MAP_NORESERVE 0
58	# define STACKSIZE 65536
59	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
60	# define STACKSIZE PTHREAD_STACK_MIN
61	#else
62	# define STACKSIZE 16384
63	#endif	310	#endif
		311	#ifndef MAP_POPULATE
		312	# define MAP_POPULATE 0
		313	#endif
		314	#ifndef MAP_NONBLOCK
		315	# define MAP_NONBLOCK 0
		316	#endif
64		317
65	/* buffer size for various temporary buffers */	318	#ifndef makedev
66	#define AIO_BUFSIZE 65536	319	# define makedev(maj,min) (((maj) << 8) | (min))
		320	#endif
		321	#ifndef major
		322	# define major(dev) ((dev) >> 8)
		323	#endif
		324	#ifndef minor
		325	# define minor(dev) ((dev) & 0xff)
		326	#endif
67		327
68	#define dBUF \	328	#ifndef PAGESIZE
69	char *aio_buf; \	329	# define PAGESIZE sysconf (_SC_PAGESIZE)
70	LOCK (wrklock); \	330	#endif
71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
72	UNLOCK (wrklock); \
73	if (!aio_buf) \
74	return -1;
75		331
76	enum {	332	enum {
77	REQ_QUIT,	333	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
78	REQ_OPEN, REQ_CLOSE,
79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
80	REQ_SENDFILE,
81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
82	REQ_FSYNC, REQ_FDATASYNC,
83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
84	REQ_READDIR,
85	REQ_LINK, REQ_SYMLINK,
86	REQ_GROUP, REQ_NOP,
87	REQ_BUSY,
88	};	334	};
89		335
90	#define AIO_REQ_KLASS "IO::AIO::REQ"
91	#define AIO_GRP_KLASS "IO::AIO::GRP"
92
93	typedef struct aio_cb
94	{
95	struct aio_cb *volatile next;
96
97	SV *data, *callback;
98	SV *fh, *fh2;
99	void *dataptr, *data2ptr;
100	Stat_t *statdata;
101	off_t offset;
102	size_t length;
103	ssize_t result;
104
105	STRLEN dataoffset;
106	int type;
107	int fd, fd2;
108	int errorno;
109	mode_t mode; /* open */
110
111	unsigned char flags;
112	unsigned char pri;
113
114	SV *self; /* the perl counterpart of this request, if any */
115	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
116	} aio_cb;
117
118	enum {
119	FLAG_CANCELLED = 0x01,
120	};
121
122	typedef aio_cb *aio_req;	336	typedef eio_req *aio_req;
123	typedef aio_cb *aio_req_ornot;	337	typedef eio_req *aio_req_ornot;
		338	typedef eio_wd aio_wd;
124		339
125	enum {	340	static SV *on_next_submit;
126	PRI_MIN = -4,	341	static int next_pri = EIO_PRI_DEFAULT;
127	PRI_MAX = 4,	342	static int max_outstanding;
128		343
129	DEFAULT_PRI = 0,	344	static s_epipe respipe;
130	PRI_BIAS = -PRI_MIN,
131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
132	};
133		345
134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
135
136	static int started, wanted;
137	static volatile int nreqs;
138	static int respipe [2];
139
140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
142	#else
143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
144	#endif
145
146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
148
149	/* worker threasd management */
150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
151
152	typedef struct worker {
153	/* locked by wrklock */
154	struct worker *prev, *next;
155
156	pthread_t tid;
157
158	/* locked by reslock, reqlock or wrklock */
159	aio_req req; /* currently processed request */
160	void *dbuf;
161	DIR *dirp;
162	} worker;
163
164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
165
166	static void worker_clear (worker *wrk)
167	{
168	if (wrk->dirp)
169	{
170	closedir (wrk->dirp);
171	wrk->dirp = 0;
172	}
173
174	if (wrk->dbuf)
175	{
176	free (wrk->dbuf);
177	wrk->dbuf = 0;
178	}
179	}
180
181	static void worker_free (worker *wrk)
182	{
183	wrk->next->prev = wrk->prev;
184	wrk->prev->next = wrk->next;
185
186	free (wrk);
187	}
188
189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
192
193	/*
194	* a somewhat faster data structure might be nice, but
195	* with 8 priorities this actually needs <20 insns
196	* per shift, the most expensive operation.
197	*/
198	typedef struct {
199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
200	int size;
201	} reqq;
202
203	static reqq req_queue;
204	static reqq res_queue;
205
206	int reqq_push (reqq *q, aio_req req)
207	{
208	int pri = req->pri;
209	req->next = 0;
210
211	if (q->qe[pri])
212	{
213	q->qe[pri]->next = req;
214	q->qe[pri] = req;
215	}
216	else
217	q->qe[pri] = q->qs[pri] = req;
218
219	return q->size++;
220	}
221
222	aio_req reqq_shift (reqq *q)
223	{
224	int pri;
225
226	if (!q->size)
227	return 0;
228
229	--q->size;
230
231	for (pri = NUM_PRI; pri--; )
232	{
233	aio_req req = q->qs[pri];
234
235	if (req)
236	{
237	if (!(q->qs[pri] = req->next))
238	q->qe[pri] = 0;
239
240	return req;
241	}
242	}
243
244	abort ();
245	}
246
247	static int poll_cb ();
248	static void req_invoke (aio_req req);
249	static void req_free (aio_req req);	346	static void req_destroy (aio_req req);
250	static void req_cancel (aio_req req);	347	static void req_cancel (aio_req req);
251		348
		349	static void
		350	want_poll (void)
		351	{
		352	/* write a dummy byte to the pipe so fh becomes ready */
		353	s_epipe_signal (&respipe);
		354	}
		355
		356	static void
		357	done_poll (void)
		358	{
		359	/* read any signals sent by the worker threads */
		360	s_epipe_drain (&respipe);
		361	}
		362
252	/* must be called at most once */	363	/* must be called at most once */
253	static SV *req_sv (aio_req req, const char *klass)	364	static SV *
		365	req_sv (aio_req req, HV *stash)
254	{	366	{
255	if (!req->self)	367	if (!req->self)
256	{	368	{
257	req->self = (SV *)newHV ();	369	req->self = (SV *)newHV ();
258	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
259	}	371	}
260		372
261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
262	}	374	}
263		375
264	static aio_req SvAIO_REQ (SV *sv)	376	static SV *
		377	newSVaio_wd (aio_wd wd)
		378	{
		379	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		380	}
		381
		382	static aio_req
		383	SvAIO_REQ (SV *sv)
265	{	384	{
266	MAGIC *mg;	385	MAGIC *mg;
267		386
268	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	387	if (!SvROK (sv)
		388	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		389	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		390	&& SvSTASH (SvRV (sv)) != aio_req_stash
		391	&& !sv_derived_from (sv, "IO::AIO::REQ")))
269	croak ("object of class " AIO_REQ_KLASS " expected");	392	croak ("object of class IO::AIO::REQ expected");
270		393
271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
272		395
273	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
274	}	397	}
275		398
		399	static aio_wd
		400	SvAIO_WD (SV *sv)
		401	{
		402	if (!SvROK (sv)
		403	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		404	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		405	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		406
		407	return (aio_wd)(long)SvIVX (SvRV (sv));
		408	}
		409
		410	static void
276	static void aio_grp_feed (aio_req grp)	411	aio_grp_feed (aio_req grp)
277	{	412	{
278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	413	if (grp->sv2 && SvOK (grp->sv2))
279	{	414	{
280	int old_len = grp->length;
281
282	if (grp->fh2 && SvOK (grp->fh2))
283	{
284	dSP;	415	dSP;
285		416
286	ENTER;	417	ENTER;
287	SAVETMPS;	418	SAVETMPS;
288	PUSHMARK (SP);	419	PUSHMARK (SP);
289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	420	XPUSHs (req_sv (grp, aio_grp_stash));
290	PUTBACK;	421	PUTBACK;
291	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	422	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
292	SPAGAIN;	423	SPAGAIN;
293	FREETMPS;	424	FREETMPS;
294	LEAVE;	425	LEAVE;
295	}
296
297	/* stop if no progress has been made */
298	if (old_len == grp->length)
299	{
300	SvREFCNT_dec (grp->fh2);
301	grp->fh2 = 0;
302	break;
303	}
304	}	426	}
305	}	427	}
306		428
307	static void aio_grp_dec (aio_req grp)	429	static void
		430	req_submit (eio_req *req)
308	{	431	{
309	--grp->length;	432	eio_submit (req);
310		433
311	/* call feeder, if applicable */	434	if (expect_false (on_next_submit))
312	aio_grp_feed (grp);
313
314	/* finish, if done */
315	if (!grp->length && grp->fd)
316	{	435	{
317	req_invoke (grp);	436	dSP;
318	req_free (grp);	437	SV *cb = sv_2mortal (on_next_submit);
		438
		439	on_next_submit = 0;
		440
		441	PUSHMARK (SP);
		442	PUTBACK;
		443	call_sv (cb, G_DISCARD | G_EVAL);
319	}	444	}
320	}	445	}
321		446
322	static void poll_wait ()	447	static int
		448	req_invoke (eio_req *req)
323	{	449	{
324	fd_set rfd;	450	if (req->flags & FLAG_SV2_RO_OFF)
		451	SvREADONLY_off (req->sv2);
325		452
326	while (nreqs)	453	if (!EIO_CANCELLED (req) && req->callback)
327	{	454	{
328	int size;
329	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
330	LOCK (reslock);
331	#endif
332	size = res_queue.size;
333	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
334	UNLOCK (reslock);
335	#endif
336
337	if (size)
338	return;
339
340	FD_ZERO(&rfd);
341	FD_SET(respipe [0], &rfd);
342
343	select (respipe [0] + 1, &rfd, 0, 0, 0);
344	}
345	}
346
347	static void req_invoke (aio_req req)
348	{
349	dSP;	455	dSP;
350		456	static SV *sv_result_cache; /* caches the result integer SV */
351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	457	SV *sv_result;
352	{
353	errno = req->errorno;
354		458
355	ENTER;	459	ENTER;
356	SAVETMPS;	460	SAVETMPS;
357	PUSHMARK (SP);	461	PUSHMARK (SP);
358	EXTEND (SP, 1);	462	EXTEND (SP, 1);
359		463
		464	/* do not recreate the result IV from scratch each time */
		465	if (expect_true (sv_result_cache))
		466	{
		467	sv_result = sv_result_cache; sv_result_cache = 0;
		468	SvIV_set (sv_result, req->result);
		469	SvIOK_only (sv_result);
		470	}
		471	else
		472	{
		473	sv_result = newSViv (req->result);
		474	SvREADONLY_on (sv_result);
		475	}
		476
360	switch (req->type)	477	switch (req->type)
361	{	478	{
		479	case EIO_WD_OPEN:
		480	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		481	break;
		482
362	case REQ_READDIR:	483	case EIO_READDIR:
363	{	484	{
364	SV *rv = &PL_sv_undef;	485	SV *rv = &PL_sv_undef;
365		486
366	if (req->result >= 0)	487	if (req->result >= 0)
367	{	488	{
368	int i;	489	int i;
369	char *buf = req->data2ptr;	490	char *names = (char *)req->ptr2;
		491	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
370	AV *av = newAV ();	492	AV *av = newAV ();
371		493
372	av_extend (av, req->result - 1);	494	av_extend (av, req->result - 1);
373		495
374	for (i = 0; i < req->result; ++i)	496	for (i = 0; i < req->result; ++i)
375	{	497	{
376	SV *sv = newSVpv (buf, 0);	498	if (req->int1 & EIO_READDIR_DENTS)
		499	{
		500	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
377		501
		502	if (req->int1 & EIO_READDIR_CUSTOM2)
		503	{
		504	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		505	AV *avent = newAV ();
		506
		507	av_extend (avent, 2);
		508
		509	if (!sv_type [ent->type])
		510	{
		511	sv_type [ent->type] = newSViv (ent->type);
		512	SvREADONLY_on (sv_type [ent->type]);
		513	}
		514
		515	av_store (avent, 0, namesv);
		516	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		517	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		518
		519	av_store (av, i, newRV_noinc ((SV *)avent));
		520	}
		521	else
378	av_store (av, i, sv);	522	av_store (av, i, namesv);
		523
		524	++ent;
		525	}
		526	else
		527	{
		528	SV *name = newSVpv (names, 0);
		529	av_store (av, i, name);
379	buf += SvCUR (sv) + 1;	530	names += SvCUR (name) + 1;
		531	}
380	}	532	}
381		533
382	rv = sv_2mortal (newRV_noinc ((SV *)av));	534	rv = sv_2mortal (newRV_noinc ((SV *)av));
383	}	535	}
384		536
385	PUSHs (rv);	537	PUSHs (rv);
		538
		539	if (req->int1 & EIO_READDIR_CUSTOM1)
		540	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
386	}	541	}
387	break;	542	break;
388		543
389	case REQ_OPEN:	544	case EIO_OPEN:
390	{	545	{
391	/* convert fd to fh */	546	/* convert fd to fh */
392	SV *fh;	547	SV *fh = &PL_sv_undef;
393		548
394	PUSHs (sv_2mortal (newSViv (req->result)));	549	if (req->result >= 0)
395	PUTBACK;	550	{
396	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	551	GV *gv = (GV *)sv_newmortal ();
397	SPAGAIN;	552	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		553	char sym [64];
		554	int symlen;
		555
		556	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		557	gv_init (gv, aio_stash, sym, symlen, 0);
398		558
399	fh = SvREFCNT_inc (POPs);	559	symlen = snprintf (
		560	sym,
		561	sizeof (sym),
		562	"%s&=%d",
		563	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		564	(int)req->result
		565	);
400		566
		567	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		568	fh = (SV *)gv;
		569	}
		570
401	PUSHMARK (SP);	571	PUSHs (fh);
402	XPUSHs (sv_2mortal (fh));
403	}	572	}
404	break;	573	break;
405		574
		575	case EIO_STATVFS:
		576	case EIO_FSTATVFS:
		577	{
		578	SV *rv = &PL_sv_undef;
		579
		580	#ifndef _WIN32
		581	if (req->result >= 0)
		582	{
		583	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		584	HV *hv = newHV ();
		585
		586	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		587
		588	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		589	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		590	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		591	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		592	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		593	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		594	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		595	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		596	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		597	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		598	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		599	}
		600	#endif
		601
		602	PUSHs (rv);
		603	}
		604
		605	break;
		606
406	case REQ_GROUP:	607	case EIO_GROUP:
407	req->fd = 2; /* mark group as finished */	608	req->int1 = 2; /* mark group as finished */
408		609
409	if (req->data)	610	if (req->sv1)
410	{	611	{
411	int i;	612	int i;
412	AV *av = (AV *)req->data;	613	AV *av = (AV *)req->sv1;
413		614
414	EXTEND (SP, AvFILL (av) + 1);	615	EXTEND (SP, AvFILL (av) + 1);
415	for (i = 0; i <= AvFILL (av); ++i)	616	for (i = 0; i <= AvFILL (av); ++i)
416	PUSHs (*av_fetch (av, i, 0));	617	PUSHs (*av_fetch (av, i, 0));
417	}	618	}
418	break;	619	break;
419		620
420	case REQ_NOP:	621	case EIO_NOP:
421	case REQ_BUSY:	622	case EIO_BUSY:
422	break;	623	break;
423		624
		625	case EIO_READLINK:
		626	case EIO_REALPATH:
		627	if (req->result > 0)
		628	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		629	break;
		630
		631	case EIO_STAT:
		632	case EIO_LSTAT:
		633	case EIO_FSTAT:
		634	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		635
		636	if (!(PL_laststatval = req->result))
		637	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		638	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		639
		640	PUSHs (sv_result);
		641	break;
		642
		643	case EIO_READ:
		644	{
		645	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		646	*SvEND (req->sv2) = 0;
		647	SvPOK_only (req->sv2);
		648	SvSETMAGIC (req->sv2);
		649	PUSHs (sv_result);
		650	}
		651	break;
		652
		653	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		654	if (req->result > 0)
		655	SvIV_set (sv_result, 0);
		656	/* FALLTHROUGH */
		657
424	default:	658	default:
425	PUSHs (sv_2mortal (newSViv (req->result)));	659	PUSHs (sv_result);
426	break;	660	break;
427	}	661	}
428		662
		663	errno = req->errorno;
429		664
430	PUTBACK;	665	PUTBACK;
431	call_sv (req->callback, G_VOID | G_EVAL);	666	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
432	SPAGAIN;	667	SPAGAIN;
		668
		669	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		670	SvREFCNT_dec (sv_result);
		671	else
		672	sv_result_cache = sv_result;
433		673
434	FREETMPS;	674	FREETMPS;
435	LEAVE;	675	LEAVE;
		676
		677	PUTBACK;
436	}	678	}
437		679
438	if (req->grp)	680	return !!SvTRUE (ERRSV);
439	{
440	aio_req grp = req->grp;
441
442	/* unlink request */
443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
445
446	if (grp->grp_first == req)
447	grp->grp_first = req->grp_next;
448
449	aio_grp_dec (grp);
450	}
451
452	if (SvTRUE (ERRSV))
453	{
454	req_free (req);
455	croak (0);
456	}
457	}	681	}
458		682
459	static void req_free (aio_req req)	683	static void
		684	req_destroy (aio_req req)
460	{	685	{
461	if (req->self)	686	if (req->self)
462	{	687	{
463	sv_unmagic (req->self, PERL_MAGIC_ext);	688	sv_unmagic (req->self, PERL_MAGIC_ext);
464	SvREFCNT_dec (req->self);	689	SvREFCNT_dec (req->self);
465	}	690	}
466		691
467	SvREFCNT_dec (req->data);
468	SvREFCNT_dec (req->fh);	692	SvREFCNT_dec (req->sv1);
469	SvREFCNT_dec (req->fh2);	693	SvREFCNT_dec (req->sv2);
		694	SvREFCNT_dec (req->sv3);
		695	SvREFCNT_dec (req->sv4);
470	SvREFCNT_dec (req->callback);	696	SvREFCNT_dec (req->callback);
471	Safefree (req->statdata);
472		697
473	if (req->type == REQ_READDIR)
474	free (req->data2ptr);
475
476	Safefree (req);	698	free (req);
477	}	699	}
478		700
		701	static void
479	static void req_cancel_subs (aio_req grp)	702	req_cancel_subs (aio_req grp)
480	{	703	{
481	aio_req sub;
482
483	if (grp->type != REQ_GROUP)	704	if (grp->type != EIO_GROUP)
484	return;	705	return;
485		706
486	SvREFCNT_dec (grp->fh2);	707	SvREFCNT_dec (grp->sv2);
487	grp->fh2 = 0;	708	grp->sv2 = 0;
488		709
489	for (sub = grp->grp_first; sub; sub = sub->grp_next)	710	eio_grp_cancel (grp);
490	req_cancel (sub);
491	}	711	}
492		712
493	static void req_cancel (aio_req req)	713	static void ecb_cold
		714	create_respipe (void)
494	{	715	{
495	req->flags |= FLAG_CANCELLED;	716	if (s_epipe_renew (&respipe))
496		717	croak ("IO::AIO: unable to initialize result pipe");
497	req_cancel_subs (req);
498	}	718	}
499		719
500	static int poll_cb ()	720	static void
		721	poll_wait (void)
501	{	722	{
502	dSP;	723	while (eio_nreqs ())
503	int count = 0;	724	{
504	int do_croak = 0;	725	int size;
505	aio_req req;
506		726
		727	X_LOCK (reslock);
		728	size = res_queue.size;
		729	X_UNLOCK (reslock);
		730
		731	if (size)
		732	return;
		733
		734	etp_maybe_start_thread ();
		735
		736	s_epipe_wait (&respipe);
		737	}
		738	}
		739
		740	static int
		741	poll_cb (void)
		742	{
507	for (;;)	743	for (;;)
508	{	744	{
509	LOCK (reslock);	745	int res = eio_poll ();
510	req = reqq_shift (&res_queue);
511		746
512	if (req)	747	if (res > 0)
		748	croak (0);
		749
		750	if (!max_outstanding || max_outstanding > eio_nreqs ())
		751	return res;
		752
		753	poll_wait ();
		754	}
		755	}
		756
		757	static void ecb_cold
		758	reinit (void)
		759	{
		760	create_respipe ();
		761
		762	if (eio_init (want_poll, done_poll) < 0)
		763	croak ("IO::AIO: unable to initialise eio library");
		764	}
		765
		766	/*****************************************************************************/
		767
		768	#if !_POSIX_MAPPED_FILES
		769	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		770	# define munmap(addr,length) (errno = ENOSYS, -1)
		771	#endif
		772
		773	#if !_POSIX_MEMORY_PROTECTION
		774	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		775	# define PROT_NONE 0
		776	# define PROT_WRITE 0
		777	# define MAP_PRIVATE 0
		778	# define MAP_SHARED 0
		779	# define MAP_FIXED 0
		780	#endif
		781
		782	#define MMAP_MAGIC PERL_MAGIC_ext
		783
		784	static int ecb_cold
		785	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		786	{
		787	int old_errno = errno;
		788	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		789	errno = old_errno;
		790
		791	mg->mg_obj = 0; /* just in case */
		792
		793	SvREADONLY_off (sv);
		794
		795	if (SvPVX (sv) != mg->mg_ptr)
		796	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		797
		798	SvCUR_set (sv, 0);
		799	SvPVX (sv) = 0;
		800	SvOK_off (sv);
		801
		802	return 0;
		803	}
		804
		805	static MGVTBL mmap_vtbl = {
		806	0, 0, 0, 0, mmap_free
		807	};
		808
		809	/*****************************************************************************/
		810
		811	static SV *
		812	get_cb (SV *cb_sv)
		813	{
		814	SvGETMAGIC (cb_sv);
		815	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		816	}
		817
		818	static aio_req ecb_noinline
		819	dreq (SV *callback)
		820	{
		821	SV *cb_cv;
		822	aio_req req;
		823	int req_pri = next_pri;
		824	next_pri = EIO_PRI_DEFAULT;
		825
		826	cb_cv = get_cb (callback);
		827
		828	req = calloc (sizeof (*req), 1);
		829	if (!req)
		830	croak ("out of memory during eio_req allocation");
		831
		832	req->callback = SvREFCNT_inc (cb_cv);
		833	req->pri = req_pri;
		834
		835	return req;
		836	}
		837
		838	#define dREQ \
		839	aio_req req = dreq (callback); \
		840
		841	#define REQ_SEND \
		842	PUTBACK; \
		843	req_submit (req); \
		844	SPAGAIN; \
		845	\
		846	if (GIMME_V != G_VOID) \
		847	XPUSHs (req_sv (req, aio_req_stash));
		848
		849	ecb_inline void
		850	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		851	{
		852	if (expect_false (SvROK (path)))
		853	{
		854	SV *rv = SvRV (path);
		855	SV *wdob;
		856
		857	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
513	{	858	{
514	if (!res_queue.size)	859	path = AvARRAY (rv)[1];
		860	wdob = AvARRAY (rv)[0];
		861
		862	if (SvOK (wdob))
515	{	863	{
516	/* read any signals sent by the worker threads */	864	*wd = SvAIO_WD (wdob);
517	char buf [32];	865	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
518	while (read (respipe [0], buf, 32) == 32)
519	;
520	}	866	}
		867	else
		868	*wd = EIO_INVALID_WD;
521	}	869	}
522		870	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
523	UNLOCK (reslock);
524
525	if (!req)
526	break;
527
528	--nreqs;
529
530	if (req->type == REQ_QUIT)
531	started--;
532	else if (req->type == REQ_GROUP && req->length)
533	{	871	{
534	req->fd = 1; /* mark request as delayed */	872	*wd = (aio_wd)(long)SvIVX (rv);
535	continue;	873	*wdsv = SvREFCNT_inc_NN (rv);
		874	*ptr = ".";
		875	return; /* path set to "." */
536	}	876	}
537	else	877	else
538	{	878	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
539	if (req->type == REQ_READ)
540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
541
542	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
543	SvREADONLY_off (req->data);
544
545	if (req->statdata)
546	{
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;
549	PL_statcache = *(req->statdata);
550	}
551
552	req_invoke (req);
553
554	count++;
555	}
556
557	req_free (req);
558	}	879	}
559		880
560	return count;	881	*pathsv = newSVsv (path);
		882	*ptr = SvPVbyte_nolen (*pathsv);
561	}	883	}
562		884
563	static void *aio_proc(void *arg);	885	static void ecb_noinline
564		886	req_set_path1 (aio_req req, SV *path)
565	static void start_thread (void)
566	{	887	{
567	sigset_t fullsigset, oldsigset;	888	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
568	pthread_attr_t attr;	889	}
569		890
570	worker *wrk = calloc (1, sizeof (worker));	891	static void ecb_noinline
		892	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		893	{
		894	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
571		895
572	if (!wrk)	896	switch (SvTYPE (rv))
573	croak ("unable to allocate worker thread data");
574
575	pthread_attr_init (&attr);
576	pthread_attr_setstacksize (&attr, STACKSIZE);
577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
578
579	sigfillset (&fullsigset);
580
581	LOCK (wrklock);
582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
583
584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
585	{	897	{
586	wrk->prev = &wrk_first;	898	case SVt_PVIO:
587	wrk->next = wrk_first.next;	899	case SVt_PVLV:
588	wrk_first.next->prev = wrk;	900	case SVt_PVGV:
589	wrk_first.next = wrk;	901	req->type = type_fh;
590	started++;	902	req->sv1 = newSVsv (fh_or_path);
		903	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		904	break;
		905
		906	default:
		907	req->type = type_path;
		908	req_set_path1 (req, fh_or_path);
		909	break;
591	}	910	}
592	else
593	free (wrk);
594
595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
596	UNLOCK (wrklock);
597	}	911	}
598		912
599	static void req_send (aio_req req)	913	XS(boot_IO__AIO) ecb_cold;
600	{
601	while (started < wanted && nreqs >= started)
602	start_thread ();
603		914
604	++nreqs;	915	MODULE = IO::AIO PACKAGE = IO::AIO
605		916
606	LOCK (reqlock);	917	PROTOTYPES: ENABLE
607	reqq_push (&req_queue, req);
608	pthread_cond_signal (&reqwait);
609	UNLOCK (reqlock);
610	}
611		918
612	static void end_thread (void)	919	BOOT:
613	{	920	{
614	aio_req req;	921	static const struct {
		922	const char *name;
		923	IV iv;
		924	} *civ, const_iv[] = {
		925	# define const_niv(name, value) { # name, (IV) value },
		926	# define const_iv(name) { # name, (IV) name },
		927	# define const_eio(name) { # name, (IV) EIO_ ## name },
		928	const_iv (EXDEV)
		929	const_iv (ENOSYS)
		930	const_iv (O_RDONLY)
		931	const_iv (O_WRONLY)
		932	const_iv (O_RDWR)
		933	const_iv (O_CREAT)
		934	const_iv (O_TRUNC)
		935	const_iv (O_EXCL)
		936	const_iv (O_APPEND)
615		937
616	Newz (0, req, 1, aio_cb);	938	const_iv (O_ASYNC)
		939	const_iv (O_DIRECT)
		940	const_iv (O_NOATIME)
617		941
618	req->type = REQ_QUIT;	942	const_iv (O_CLOEXEC)
619	req->pri = PRI_MAX + PRI_BIAS;	943	const_iv (O_NOCTTY)
		944	const_iv (O_NOFOLLOW)
		945	const_iv (O_NONBLOCK)
		946	const_iv (O_EXEC)
		947	const_iv (O_SEARCH)
		948	const_iv (O_DIRECTORY)
		949	const_iv (O_DSYNC)
		950	const_iv (O_RSYNC)
		951	const_iv (O_SYNC)
		952	const_iv (O_TTY_INIT)
620		953
621	req_send (req);	954	const_iv (S_IFIFO)
622	}	955	const_iv (S_IFCHR)
		956	const_iv (S_IFBLK)
		957	const_iv (S_IFLNK)
		958	const_iv (S_IFREG)
		959	const_iv (S_IFDIR)
		960	const_iv (S_IFWHT)
		961	const_iv (S_IFSOCK)
		962	const_iv (S_IFMT)
623		963
624	static void min_parallel (int nthreads)	964	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
625	{	965	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
626	if (wanted < nthreads)	966	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
627	wanted = nthreads;	967	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
628	}	968	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		969	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
629		970
630	static void max_parallel (int nthreads)	971	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
631	{	972	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
632	int cur = started;	973	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		974	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		975	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
633		976
634	if (wanted > nthreads)	977	const_iv (ST_RDONLY)
635	wanted = nthreads;	978	const_iv (ST_NOSUID)
		979	const_iv (ST_NODEV)
		980	const_iv (ST_NOEXEC)
		981	const_iv (ST_SYNCHRONOUS)
		982	const_iv (ST_MANDLOCK)
		983	const_iv (ST_WRITE)
		984	const_iv (ST_APPEND)
		985	const_iv (ST_IMMUTABLE)
		986	const_iv (ST_NOATIME)
		987	const_iv (ST_NODIRATIME)
		988	const_iv (ST_RELATIME)
636		989
637	while (cur > wanted)	990	const_iv (PROT_NONE)
638	{	991	const_iv (PROT_EXEC)
639	end_thread ();	992	const_iv (PROT_READ)
640	cur--;	993	const_iv (PROT_WRITE)
641	}
642		994
643	while (started > wanted)	995	/*const_iv (MAP_FIXED)*/
644	{	996	const_iv (MAP_PRIVATE)
645	poll_wait ();	997	const_iv (MAP_SHARED)
646	poll_cb ();	998	const_iv (MAP_ANONYMOUS)
647	}
648	}
649		999
650	static void create_pipe ()	1000	/* linuxish */
651	{	1001	const_iv (MAP_HUGETLB)
652	if (pipe (respipe))	1002	const_iv (MAP_LOCKED)
653	croak ("unable to initialize result pipe");	1003	const_iv (MAP_NORESERVE)
		1004	const_iv (MAP_POPULATE)
		1005	const_iv (MAP_NONBLOCK)
654		1006
655	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	1007	const_eio (MCL_FUTURE)
656	croak ("cannot set result pipe to nonblocking mode");	1008	const_eio (MCL_CURRENT)
657		1009
658	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	1010	const_eio (MS_ASYNC)
659	croak ("cannot set result pipe to nonblocking mode");	1011	const_eio (MS_INVALIDATE)
660	}	1012	const_eio (MS_SYNC)
661		1013
662	/*****************************************************************************/	1014	const_eio (MT_MODIFY)
663	/* work around various missing functions */
664		1015
665	#if !HAVE_PREADWRITE	1016	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
666	# define pread aio_pread	1017	const_eio (SYNC_FILE_RANGE_WRITE)
667	# define pwrite aio_pwrite	1018	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
668		1019
669	/*	1020	const_eio (FALLOC_FL_KEEP_SIZE)
670	* make our pread/pwrite safe against themselves, but not against
671	* normal read/write by using a mutex. slows down execution a lot,
672	* but that's your problem, not mine.
673	*/
674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
675		1021
676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1022	const_eio (READDIR_DENTS)
677	{	1023	const_eio (READDIR_DIRS_FIRST)
678	ssize_t res;	1024	const_eio (READDIR_STAT_ORDER)
679	off_t ooffset;	1025	const_eio (READDIR_FOUND_UNKNOWN)
680		1026
681	LOCK (preadwritelock);	1027	const_eio (DT_UNKNOWN)
682	ooffset = lseek (fd, 0, SEEK_CUR);	1028	const_eio (DT_FIFO)
683	lseek (fd, offset, SEEK_SET);	1029	const_eio (DT_CHR)
684	res = read (fd, buf, count);	1030	const_eio (DT_DIR)
685	lseek (fd, ooffset, SEEK_SET);	1031	const_eio (DT_BLK)
686	UNLOCK (preadwritelock);	1032	const_eio (DT_REG)
687		1033	const_eio (DT_LNK)
688	return res;	1034	const_eio (DT_SOCK)
689	}	1035	const_eio (DT_WHT)
690
691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
692	{
693	ssize_t res;
694	off_t ooffset;
695
696	LOCK (preadwritelock);
697	ooffset = lseek (fd, 0, SEEK_CUR);
698	lseek (fd, offset, SEEK_SET);
699	res = write (fd, buf, count);
700	lseek (fd, offset, SEEK_SET);
701	UNLOCK (preadwritelock);
702
703	return res;
704	}
705	#endif
706
707	#if !HAVE_FDATASYNC
708	# define fdatasync fsync
709	#endif
710
711	#if !HAVE_READAHEAD
712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
713
714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
715	{
716	dBUF;
717
718	while (count > 0)
719	{
720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
721
722	pread (fd, aio_buf, len, offset);
723	offset += len;
724	count -= len;
725	}
726
727	errno = 0;
728	}
729
730	#endif
731
732	#if !HAVE_READDIR_R
733	# define readdir_r aio_readdir_r
734
735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
736
737	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
738	{
739	struct dirent *e;
740	int errorno;
741
742	LOCK (readdirlock);
743
744	e = readdir (dirp);
745	errorno = errno;
746
747	if (e)
748	{
749	*res = ent;
750	strcpy (ent->d_name, e->d_name);
751	}
752	else
753	*res = 0;
754
755	UNLOCK (readdirlock);
756
757	errno = errorno;
758	return e ? 0 : -1;
759	}
760	#endif
761
762	/* sendfile always needs emulation */
763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
764	{
765	ssize_t res;
766
767	if (!count)
768	return 0;
769
770	#if HAVE_SENDFILE
771	# if __linux
772	res = sendfile (ofd, ifd, &offset, count);
773
774	# elif __freebsd
775	/*
776	* Of course, the freebsd sendfile is a dire hack with no thoughts
777	* wasted on making it similar to other I/O functions.
778	*/
779	{
780	off_t sbytes;
781	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
782
783	if (res < 0 && sbytes)
784	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
785	res = sbytes;
786	}	1036	};
787		1037
788	# elif __hpux	1038	aio_stash = gv_stashpv ("IO::AIO" , 1);
789	res = sendfile (ofd, ifd, offset, count, 0, 0);	1039	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1040	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1041	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
790		1042
791	# elif __solaris	1043	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
792	{	1044	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
793	struct sendfilevec vec;
794	size_t sbytes;
795		1045
796	vec.sfv_fd = ifd;	1046	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
797	vec.sfv_flag = 0;
798	vec.sfv_off = offset;
799	vec.sfv_len = count;
800		1047
801	res = sendfilev (ofd, &vec, 1, &sbytes);	1048	reinit ();
		1049	}
802		1050
803	if (res < 0 && sbytes)	1051	void
		1052	reinit ()
		1053	PROTOTYPE:
		1054
		1055	void
		1056	max_poll_reqs (unsigned int nreqs)
		1057	PROTOTYPE: $
		1058	CODE:
		1059	eio_set_max_poll_reqs (nreqs);
		1060
		1061	void
		1062	max_poll_time (double nseconds)
		1063	PROTOTYPE: $
		1064	CODE:
		1065	eio_set_max_poll_time (nseconds);
		1066
		1067	void
		1068	min_parallel (unsigned int nthreads)
		1069	PROTOTYPE: $
		1070	CODE:
		1071	eio_set_min_parallel (nthreads);
		1072
		1073	void
		1074	max_parallel (unsigned int nthreads)
		1075	PROTOTYPE: $
		1076	CODE:
		1077	eio_set_max_parallel (nthreads);
		1078
		1079	void
		1080	max_idle (unsigned int nthreads)
		1081	PROTOTYPE: $
		1082	CODE:
		1083	eio_set_max_idle (nthreads);
		1084
		1085	void
		1086	idle_timeout (unsigned int seconds)
		1087	PROTOTYPE: $
		1088	CODE:
		1089	eio_set_idle_timeout (seconds);
		1090
		1091	void
		1092	max_outstanding (unsigned int maxreqs)
		1093	PROTOTYPE: $
		1094	CODE:
		1095	max_outstanding = maxreqs;
		1096
		1097	void
		1098	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1099	PPCODE:
		1100	{
		1101	dREQ;
		1102
		1103	req->type = EIO_WD_OPEN;
		1104	req_set_path1 (req, pathname);
		1105
		1106	REQ_SEND;
		1107	}
		1108
		1109	void
		1110	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1111	PPCODE:
		1112	{
		1113	dREQ;
		1114
		1115	req->type = EIO_OPEN;
		1116	req_set_path1 (req, pathname);
		1117	req->int1 = flags;
		1118	req->int2 = mode;
		1119
		1120	REQ_SEND;
		1121	}
		1122
		1123	void
		1124	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1125	ALIAS:
		1126	aio_fsync = EIO_FSYNC
		1127	aio_fdatasync = EIO_FDATASYNC
		1128	aio_syncfs = EIO_SYNCFS
		1129	PPCODE:
		1130	{
		1131	int fd = s_fileno_croak (fh, 0);
		1132	dREQ;
		1133
		1134	req->type = ix;
		1135	req->sv1 = newSVsv (fh);
		1136	req->int1 = fd;
		1137
		1138	REQ_SEND (req);
		1139	}
		1140
		1141	void
		1142	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1143	PPCODE:
		1144	{
		1145	int fd = s_fileno_croak (fh, 0);
		1146	dREQ;
		1147
		1148	req->type = EIO_SYNC_FILE_RANGE;
		1149	req->sv1 = newSVsv (fh);
		1150	req->int1 = fd;
		1151	req->offs = offset;
804	res = sbytes;	1152	req->size = nbytes;
805	}	1153	req->int2 = flags;
806		1154
807	# endif	1155	REQ_SEND (req);
		1156	}
		1157
		1158	void
		1159	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	int fd = s_fileno_croak (fh, 0);
		1163	dREQ;
		1164
		1165	req->type = EIO_FALLOCATE;
		1166	req->sv1 = newSVsv (fh);
		1167	req->int1 = fd;
		1168	req->int2 = mode;
		1169	req->offs = offset;
		1170	req->size = len;
		1171
		1172	REQ_SEND (req);
		1173	}
		1174
		1175	void
		1176	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1177	PPCODE:
		1178	{
		1179	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1180	int fd = s_fileno_croak (fh, 0);
		1181	dREQ;
		1182
		1183	if (expect_false (close_fd < 0))
		1184	{
		1185	int pipefd [2];
		1186
		1187	if (
		1188	#ifdef _WIN32
		1189	_pipe (pipefd, 1, _O_BINARY) < 0
808	#else	1190	#else
809	res = -1;	1191	pipe (pipefd) < 0
810	errno = ENOSYS;	1192	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
811	#endif	1193	#endif
812		1194	|| close (pipefd [1]) < 0
813	if (res < 0
814	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
815	#if __solaris
816	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
817	#endif
818	)
819	)
820	{
821	/* emulate sendfile. this is a major pain in the ass */
822	dBUF;
823
824	res = 0;
825
826	while (count)
827	{
828	ssize_t cnt;
829
830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
831
832	if (cnt <= 0)
833	{	1195	)
834	if (cnt && !res) res = -1;	1196	abort (); /*D*/
835	break;
836	}
837		1197
838	cnt = write (ofd, aio_buf, cnt);	1198	close_fd = pipefd [0];
839
840	if (cnt <= 0)
841	{
842	if (cnt && !res) res = -1;
843	break;
844	}
845
846	offset += cnt;
847	res += cnt;
848	count -= cnt;
849	}
850	}
851
852	return res;
853	}
854
855	/* read a full directory */
856	static void scandir_ (aio_req req, worker *self)
857	{
858	DIR *dirp;
859	union
860	{
861	struct dirent d;
862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
863	} *u;
864	struct dirent *entp;
865	char *name, *names;
866	int memlen = 4096;
867	int memofs = 0;
868	int res = 0;
869	int errorno;
870
871	LOCK (wrklock);
872	self->dirp = dirp = opendir (req->dataptr);
873	self->dbuf = u = malloc (sizeof (*u));
874	UNLOCK (wrklock);
875
876	req->data2ptr = names = malloc (memlen);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}	1199	}
909	}
910		1200
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916
917	/*****************************************************************************/
918
919	static void *aio_proc (void *thr_arg)
920	{
921	aio_req req;
922	int type;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}
1069
1070	#define dREQ \
1071	aio_req req; \
1072	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \
1074	\
1075	if (SvOK (callback) && !SvROK (callback)) \
1076	croak ("callback must be undef or of reference type"); \
1077	\
1078	Newz (0, req, 1, aio_cb); \
1079	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \
1081	\
1082	req->callback = newSVsv (callback); \
1083	req->pri = req_pri
1084
1085	#define REQ_SEND \
1086	req_send (req); \
1087	\
1088	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090
1091	MODULE = IO::AIO PACKAGE = IO::AIO
1092
1093	PROTOTYPES: ENABLE
1094
1095	BOOT:
1096	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101
1102	create_pipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105
1106	void
1107	min_parallel (nthreads)
1108	int nthreads
1109	PROTOTYPE: $
1110
1111	void
1112	max_parallel (nthreads)
1113	int nthreads
1114	PROTOTYPE: $
1115
1116	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$
1123	PPCODE:
1124	{
1125	dREQ;
1126
1127	req->type = REQ_OPEN;	1201	req->type = EIO_DUP2;
		1202	req->int1 = close_fd;
1128	req->data = newSVsv (pathname);	1203	req->sv2 = newSVsv (fh);
1129	req->dataptr = SvPVbyte_nolen (req->data);	1204	req->int2 = fd;
1130	req->fd = flags;
1131	req->mode = mode;
1132		1205
1133	REQ_SEND;	1206	REQ_SEND (req);
1134	}	1207	}
1135		1208
1136	void	1209	void
1137	aio_close (fh,callback=&PL_sv_undef)	1210	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$
1141	ALIAS:	1211	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC
1145	PPCODE:
1146	{
1147	dREQ;
1148
1149	req->type = ix;
1150	req->fh = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152
1153	REQ_SEND (req);
1154	}
1155
1156	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:
1165	aio_read = REQ_READ	1212	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	1213	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$
1168	PPCODE:	1214	PPCODE:
1169	{	1215	{
1170	aio_req req;
1171	STRLEN svlen;	1216	STRLEN svlen;
		1217	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	1218	char *svptr = SvPVbyte (data, svlen);
1173		1219	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		1220
1177	if (dataoffset < 0)	1221	if (dataoffset < 0)
1178	dataoffset += svlen;	1222	dataoffset += svlen;
1179		1223
1180	if (dataoffset < 0 || dataoffset > svlen)	1224	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	1225	croak ("dataoffset outside of data scalar");
1182		1226
1183	if (ix == REQ_WRITE)	1227	if (ix == EIO_WRITE)
1184	{	1228	{
1185	/* write: check length and adjust. */	1229	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	1230	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	1231	len = svlen - dataoffset;
1188	}	1232	}
1189	else	1233	else
1190	{	1234	{
1191	/* read: grow scalar as necessary */	1235	/* read: check type and grow scalar as necessary */
		1236	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	1237	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	1238	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		1239
1198	{	1240	{
1199	dREQ;	1241	dREQ;
1200		1242
1201	req->type = ix;	1243	req->type = ix;
1202	req->fh = newSVsv (fh);	1244	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1245	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	1246	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	1247	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	1248	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1249	req->ptr2 = (char *)svptr + dataoffset;
		1250	req->stroffset = dataoffset;
1209		1251
1210	if (!SvREADONLY (data))	1252	if (!SvREADONLY (data))
1211	{	1253	{
1212	SvREADONLY_on (data);	1254	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1255	req->flags |= FLAG_SV2_RO_OFF;
1214	}	1256	}
1215		1257
1216	REQ_SEND;	1258	REQ_SEND;
1217	}	1259	}
1218	}	1260	}
1219		1261
1220	void	1262	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1263	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1222	SV * out_fh	1264	ALIAS:
1223	SV * in_fh	1265	aio_readlink = EIO_READLINK
1224	UV in_offset	1266	aio_realpath = EIO_REALPATH
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$
1228	PPCODE:	1267	PPCODE:
1229	{	1268	{
		1269	dREQ;
		1270
		1271	req->type = ix;
		1272	req_set_path1 (req, pathname);
		1273
		1274	REQ_SEND;
		1275	}
		1276
		1277	void
		1278	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1279	PPCODE:
		1280	{
		1281	int ifd = s_fileno_croak (in_fh , 0);
		1282	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	1283	dREQ;
1231		1284
1232	req->type = REQ_SENDFILE;	1285	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1286	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1287	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	1288	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1289	req->int2 = ifd;
1237	req->offset = in_offset;	1290	req->offs = in_offset;
1238	req->length = length;	1291	req->size = length;
1239		1292
1240	REQ_SEND;	1293	REQ_SEND;
1241	}	1294	}
1242		1295
1243	void	1296	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1297	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$
1250	PPCODE:	1298	PPCODE:
1251	{	1299	{
		1300	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	1301	dREQ;
1253		1302
1254	req->type = REQ_READAHEAD;	1303	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	1304	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1305	req->int1 = fd;
1257	req->offset = offset;	1306	req->offs = offset;
1258	req->length = length;	1307	req->size = length;
1259		1308
1260	REQ_SEND;	1309	REQ_SEND;
1261	}	1310	}
1262		1311
1263	void	1312	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1313	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1314	ALIAS:
1268	aio_stat = REQ_STAT	1315	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	1316	aio_lstat = EIO_LSTAT
		1317	aio_statvfs = EIO_STATVFS
1270	PPCODE:	1318	PPCODE:
1271	{	1319	{
1272	dREQ;	1320	dREQ;
1273		1321
1274	New (0, req->statdata, 1, Stat_t);	1322	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280
1281	if (SvPOK (fh_or_path))
1282	{
1283	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);
1286	}
1287	else
1288	{
1289	req->type = REQ_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}
1293		1323
1294	REQ_SEND;	1324	REQ_SEND;
1295	}	1325	}
1296		1326
		1327	UV
		1328	major (UV dev)
		1329	ALIAS:
		1330	minor = 1
		1331	CODE:
		1332	RETVAL = ix ? major (dev) : minor (dev);
		1333	OUTPUT:
		1334	RETVAL
		1335
		1336	UV
		1337	makedev (UV maj, UV min)
		1338	CODE:
		1339	RETVAL = makedev (maj, min);
		1340	OUTPUT:
		1341	RETVAL
		1342
1297	void	1343	void
		1344	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1345	PPCODE:
		1346	{
		1347	dREQ;
		1348
		1349	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1350	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1351	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1352
		1353	REQ_SEND;
		1354	}
		1355
		1356	void
		1357	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1358	PPCODE:
		1359	{
		1360	dREQ;
		1361
		1362	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1363	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1364
		1365	REQ_SEND;
		1366	}
		1367
		1368	void
		1369	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->int2 = mode;
		1375	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1376
		1377	REQ_SEND;
		1378	}
		1379
		1380	void
		1381	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1382	PPCODE:
		1383	{
		1384	dREQ;
		1385
		1386	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1387	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1388	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->type = EIO_READDIR;
		1400	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1401
		1402	if (flags & EIO_READDIR_DENTS)
		1403	req->int1 |= EIO_READDIR_CUSTOM2;
		1404
		1405	req_set_path1 (req, pathname);
		1406
		1407	REQ_SEND;
		1408	}
		1409
		1410	void
		1411	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1412	PPCODE:
		1413	{
		1414	dREQ;
		1415
		1416	req->type = EIO_MKDIR;
		1417	req->int2 = mode;
		1418	req_set_path1 (req, pathname);
		1419
		1420	REQ_SEND;
		1421	}
		1422
		1423	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1424	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1425	ALIAS:
1302	aio_unlink = REQ_UNLINK	1426	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1427	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1428	aio_readdir = EIO_READDIR
1305	PPCODE:	1429	PPCODE:
1306	{	1430	{
1307	dREQ;	1431	dREQ;
1308		1432
1309	req->type = ix;	1433	req->type = ix;
1310	req->data = newSVsv (pathname);	1434	req_set_path1 (req, pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1435
1312
1313	REQ_SEND;	1436	REQ_SEND;
1314	}	1437	}
1315		1438
1316	void	1439	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1440	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1441	ALIAS:
1322	aio_link = REQ_LINK	1442	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1443	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1444	aio_rename = EIO_RENAME
1325	PPCODE:	1445	PPCODE:
1326	{	1446	{
		1447	eio_wd wd2 = 0;
1327	dREQ;	1448	dREQ;
1328		1449
1329	req->type = ix;	1450	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1451	req_set_path1 (req, oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1452	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1332	req->data = newSVsv (newpath);	1453	req->int3 = (long)wd2;
1333	req->dataptr = SvPVbyte_nolen (req->data);
1334		1454
1335	REQ_SEND;	1455	REQ_SEND;
1336	}	1456	}
1337		1457
1338	void	1458	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1459	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1460	PPCODE:
1343	{	1461	{
1344	dREQ;	1462	dREQ;
1345		1463
1346	req->type = REQ_BUSY;	1464	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1465	req->int2 = (mode_t)mode;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1466	req->offs = dev;
1349		1467	req_set_path1 (req, pathname);
		1468
1350	REQ_SEND;	1469	REQ_SEND;
1351	}	1470	}
1352		1471
1353	void	1472	void
1354	aio_group (callback=&PL_sv_undef)	1473	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1355	SV * callback	1474	ALIAS:
1356	PROTOTYPE: ;$	1475	aio_mtouch = EIO_MTOUCH
		1476	aio_msync = EIO_MSYNC
1357	PPCODE:	1477	PPCODE:
1358	{	1478	{
		1479	STRLEN svlen;
		1480	char *svptr = SvPVbyte (data, svlen);
		1481	UV len = SvUV (length);
		1482
		1483	if (offset < 0)
		1484	offset += svlen;
		1485
		1486	if (offset < 0 || offset > svlen)
		1487	croak ("offset outside of scalar");
		1488
		1489	if (!SvOK (length) || len + offset > svlen)
		1490	len = svlen - offset;
		1491
		1492	{
		1493	dREQ;
		1494
		1495	req->type = ix;
		1496	req->sv2 = SvREFCNT_inc (data);
		1497	req->ptr2 = (char *)svptr + offset;
		1498	req->size = len;
		1499	req->int1 = flags;
		1500
		1501	REQ_SEND;
		1502	}
		1503	}
		1504
		1505	void
		1506	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1507	PPCODE:
		1508	{
		1509	STRLEN svlen;
		1510	char *svptr = SvPVbyte (data, svlen);
		1511	UV len = SvUV (length);
		1512
		1513	if (offset < 0)
		1514	offset += svlen;
		1515
		1516	if (offset < 0 || offset > svlen)
		1517	croak ("offset outside of scalar");
		1518
		1519	if (!SvOK (length) || len + offset > svlen)
		1520	len = svlen - offset;
		1521
		1522	{
		1523	dREQ;
		1524
		1525	req->type = EIO_MLOCK;
		1526	req->sv2 = SvREFCNT_inc (data);
		1527	req->ptr2 = (char *)svptr + offset;
		1528	req->size = len;
		1529
		1530	REQ_SEND;
		1531	}
		1532	}
		1533
		1534	void
		1535	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1536	PPCODE:
		1537	{
		1538	dREQ;
		1539
		1540	req->type = EIO_MLOCKALL;
		1541	req->int1 = flags;
		1542
		1543	REQ_SEND;
		1544	}
		1545
		1546	void
		1547	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1548	PPCODE:
		1549	{
1359	dREQ;	1550	dREQ;
1360		1551
		1552	req->type = EIO_BUSY;
		1553	req->nv1 = delay < 0. ? 0. : delay;
		1554
		1555	REQ_SEND;
		1556	}
		1557
		1558	void
		1559	aio_group (SV *callback=&PL_sv_undef)
		1560	PPCODE:
		1561	{
		1562	dREQ;
		1563
1361	req->type = REQ_GROUP;	1564	req->type = EIO_GROUP;
		1565
1362	req_send (req);	1566	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1567	XPUSHs (req_sv (req, aio_grp_stash));
1365	}	1568	}
1366		1569
1367	void	1570	void
1368	aio_nop (callback=&PL_sv_undef)	1571	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1572	ALIAS:
		1573	aio_nop = EIO_NOP
		1574	aio_sync = EIO_SYNC
1370	PPCODE:	1575	PPCODE:
1371	{	1576	{
1372	dREQ;	1577	dREQ;
1373		1578
1374	req->type = REQ_NOP;	1579	req->type = ix;
1375		1580
1376	REQ_SEND;	1581	REQ_SEND;
1377	}	1582	}
1378		1583
1379	void	1584	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1585	aioreq_pri (int pri = 0)
1381	CODE:	1586	CODE:
		1587	RETVAL = next_pri;
		1588	if (items > 0)
		1589	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1590	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1591	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1592	next_pri = pri;
		1593	}
		1594	OUTPUT:
		1595	RETVAL
1385		1596
1386	void	1597	void
1387	aioreq_nice (int nice = 0)	1598	aioreq_nice (int nice = 0)
1388	CODE:	1599	CODE:
1389	nice = next_pri - nice;	1600	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1601	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1602	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1603	next_pri = nice;
1393		1604
1394	void	1605	void
1395	flush ()	1606	flush ()
1396	PROTOTYPE:
1397	CODE:	1607	CODE:
1398	while (nreqs)	1608	while (eio_nreqs ())
1399	{	1609	{
1400	poll_wait ();	1610	poll_wait ();
1401	poll_cb ();	1611	poll_cb ();
1402	}	1612	}
1403		1613
1404	void	1614	int
1405	poll()	1615	poll ()
1406	PROTOTYPE:
1407	CODE:	1616	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1617	poll_wait ();
1411	poll_cb ();	1618	RETVAL = poll_cb ();
1412	}
1413
1414	int
1415	poll_fileno()
1416	PROTOTYPE:
1417	CODE:
1418	RETVAL = respipe [0];
1419	OUTPUT:	1619	OUTPUT:
1420	RETVAL	1620	RETVAL
1421		1621
1422	int	1622	int
		1623	poll_fileno ()
		1624	CODE:
		1625	RETVAL = s_epipe_fd (&respipe);
		1626	OUTPUT:
		1627	RETVAL
		1628
		1629	int
1423	poll_cb(...)	1630	poll_cb (...)
1424	PROTOTYPE:	1631	PROTOTYPE:
1425	CODE:	1632	CODE:
1426	RETVAL = poll_cb ();	1633	RETVAL = poll_cb ();
1427	OUTPUT:	1634	OUTPUT:
1428	RETVAL	1635	RETVAL
1429		1636
1430	void	1637	void
1431	poll_wait()	1638	poll_wait ()
1432	PROTOTYPE:
1433	CODE:	1639	CODE:
1434	if (nreqs)
1435	poll_wait ();	1640	poll_wait ();
1436		1641
1437	int	1642	int
1438	nreqs()	1643	nreqs ()
1439	PROTOTYPE:
1440	CODE:	1644	CODE:
1441	RETVAL = nreqs;	1645	RETVAL = eio_nreqs ();
1442	OUTPUT:	1646	OUTPUT:
1443	RETVAL	1647	RETVAL
1444		1648
		1649	int
		1650	nready ()
		1651	CODE:
		1652	RETVAL = eio_nready ();
		1653	OUTPUT:
		1654	RETVAL
		1655
		1656	int
		1657	npending ()
		1658	CODE:
		1659	RETVAL = eio_npending ();
		1660	OUTPUT:
		1661	RETVAL
		1662
		1663	int
		1664	nthreads ()
		1665	CODE:
		1666	RETVAL = eio_nthreads ();
		1667	OUTPUT:
		1668	RETVAL
		1669
		1670	int
		1671	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1672	CODE:
		1673	RETVAL = posix_fadvise (fh, offset, length, advice);
		1674	OUTPUT:
		1675	RETVAL
		1676
		1677	IV
		1678	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1679	CODE:
		1680	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1681	OUTPUT:
		1682	RETVAL
		1683
		1684	void
		1685	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1686	PPCODE:
		1687	sv_unmagic (scalar, MMAP_MAGIC);
		1688	{
		1689	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1690	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1691	if (addr == (void *)-1)
		1692	XSRETURN_NO;
		1693
		1694	sv_force_normal (scalar);
		1695
		1696	/* we store the length in mg_obj, as namlen is I32 :/ */
		1697	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1698	->mg_obj = (SV *)length;
		1699
		1700	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1701
		1702	if (!(prot & PROT_WRITE))
		1703	SvREADONLY_on (scalar);
		1704
		1705	if (SvLEN (scalar))
		1706	Safefree (SvPVX (scalar));
		1707
		1708	SvPVX (scalar) = (char *)addr;
		1709	SvCUR_set (scalar, length);
		1710	SvLEN_set (scalar, 0);
		1711	SvPOK_only (scalar);
		1712
		1713	XSRETURN_YES;
		1714	}
		1715
		1716	void
		1717	munmap (SV *scalar)
		1718	CODE:
		1719	sv_unmagic (scalar, MMAP_MAGIC);
		1720
		1721	int
		1722	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1723	ALIAS:
		1724	mprotect = 1
		1725	CODE:
		1726	{
		1727	STRLEN svlen;
		1728	void *addr = SvPVbyte (scalar, svlen);
		1729	size_t len = SvUV (length);
		1730
		1731	if (offset < 0)
		1732	offset += svlen;
		1733
		1734	if (offset < 0 || offset > svlen)
		1735	croak ("offset outside of scalar");
		1736
		1737	if (!SvOK (length) || len + offset > svlen)
		1738	len = svlen - offset;
		1739
		1740	addr = (void *)(((intptr_t)addr) + offset);
		1741	eio_page_align (&addr, &len);
		1742
		1743	switch (ix)
		1744	{
		1745	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1746	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1747	}
		1748	}
		1749	OUTPUT:
		1750	RETVAL
		1751
		1752	int
		1753	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1754	CODE:
		1755	{
		1756	STRLEN svlen;
		1757	void *addr = SvPVbyte (scalar, svlen);
		1758	size_t len = SvUV (length);
		1759
		1760	if (offset < 0)
		1761	offset += svlen;
		1762
		1763	if (offset < 0 || offset > svlen)
		1764	croak ("offset outside of scalar");
		1765
		1766	if (!SvOK (length) || len + offset > svlen)
		1767	len = svlen - offset;
		1768
		1769	addr = (void *)(((intptr_t)addr) + offset);
		1770	eio_page_align (&addr, &len);
		1771	#if _POSIX_MEMLOCK_RANGE
		1772	RETVAL = munlock (addr, len);
		1773	#else
		1774	RETVAL = ((errno = ENOSYS), -1);
		1775	#endif
		1776	}
		1777	OUTPUT:
		1778	RETVAL
		1779
		1780	int
		1781	munlockall ()
		1782	CODE:
		1783	#if _POSIX_MEMLOCK
		1784	munlockall ();
		1785	#else
		1786	RETVAL = -1;
		1787	errno = ENOSYS;
		1788	#endif
		1789	OUTPUT:
		1790	RETVAL
		1791
		1792	void _on_next_submit (SV *cb)
		1793	CODE:
		1794	SvREFCNT_dec (on_next_submit);
		1795	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1796
1445	PROTOTYPES: DISABLE	1797	PROTOTYPES: DISABLE
		1798
		1799	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1800
		1801	BOOT:
		1802	{
		1803	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1804	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1805	}
		1806
		1807	void
		1808	DESTROY (SV *self)
		1809	CODE:
		1810	{
		1811	aio_wd wd = SvAIO_WD (self);
		1812	#if HAVE_AT
		1813	{
		1814	SV *callback = &PL_sv_undef;
		1815	dREQ; /* clobbers next_pri :/ */
		1816	next_pri = req->pri; /* restore next_pri */
		1817	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1818	req->type = EIO_WD_CLOSE;
		1819	req->wd = wd;
		1820	REQ_SEND;
		1821	}
		1822	#else
		1823	eio_wd_close_sync (wd);
		1824	#endif
		1825	}
1446		1826
1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1827	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1448		1828
1449	void	1829	void
1450	cancel (aio_req_ornot req)	1830	cancel (aio_req_ornot req)
1451	CODE:	1831	CODE:
1452	req_cancel (req);	1832	eio_cancel (req);
1453		1833
1454	void	1834	void
1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1835	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1456	CODE:	1836	PPCODE:
		1837	{
		1838	if (GIMME_V != G_VOID)
		1839	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1840
		1841	if (items > 1)
		1842	{
		1843	SV *cb_cv =get_cb (callback);
		1844
1457	SvREFCNT_dec (req->callback);	1845	SvREFCNT_dec (req->callback);
1458	req->callback = newSVsv (callback);	1846	req->callback = SvREFCNT_inc (cb_cv);
		1847	}
		1848	}
1459		1849
1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1850	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1461		1851
1462	void	1852	void
1463	add (aio_req grp, ...)	1853	add (aio_req grp, ...)
1464	PPCODE:	1854	PPCODE:
1465	{	1855	{
1466	int i;	1856	int i;
1467	aio_req req;
1468		1857
1469	if (grp->fd == 2)	1858	if (grp->int1 == 2)
1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1859	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1471		1860
1472	for (i = 1; i < items; ++i )	1861	for (i = 1; i < items; ++i )
1473	{	1862	{
		1863	aio_req req;
		1864
1474	if (GIMME_V != G_VOID)	1865	if (GIMME_V != G_VOID)
1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1866	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1476		1867
1477	req = SvAIO_REQ (ST (i));	1868	req = SvAIO_REQ (ST (i));
1478		1869
1479	if (req)	1870	if (req)
1480	{	1871	eio_grp_add (grp, req);
1481	++grp->length;
1482	req->grp = grp;
1483
1484	req->grp_prev = 0;
1485	req->grp_next = grp->grp_first;
1486
1487	if (grp->grp_first)
1488	grp->grp_first->grp_prev = req;
1489
1490	grp->grp_first = req;
1491	}
1492	}	1872	}
1493	}	1873	}
1494		1874
1495	void	1875	void
1496	cancel_subs (aio_req_ornot req)	1876	cancel_subs (aio_req_ornot req)
…		…
1500	void	1880	void
1501	result (aio_req grp, ...)	1881	result (aio_req grp, ...)
1502	CODE:	1882	CODE:
1503	{	1883	{
1504	int i;	1884	int i;
		1885	AV *av;
		1886
		1887	grp->errorno = errno;
		1888
1505	AV *av = newAV ();	1889	av = newAV ();
		1890	av_extend (av, items - 1);
1506		1891
1507	for (i = 1; i < items; ++i )	1892	for (i = 1; i < items; ++i )
1508	av_push (av, newSVsv (ST (i)));	1893	av_push (av, newSVsv (ST (i)));
1509		1894
1510	SvREFCNT_dec (grp->data);	1895	SvREFCNT_dec (grp->sv1);
1511	grp->data = (SV *)av;	1896	grp->sv1 = (SV *)av;
1512	}	1897	}
		1898
		1899	void
		1900	errno (aio_req grp, int errorno = errno)
		1901	CODE:
		1902	grp->errorno = errorno;
1513		1903
1514	void	1904	void
1515	limit (aio_req grp, int limit)	1905	limit (aio_req grp, int limit)
1516	CODE:	1906	CODE:
1517	grp->fd2 = limit;	1907	eio_grp_limit (grp, limit);
1518	aio_grp_feed (grp);
1519		1908
1520	void	1909	void
1521	feed (aio_req grp, SV *callback=&PL_sv_undef)	1910	feed (aio_req grp, SV *callback=&PL_sv_undef)
1522	CODE:	1911	CODE:
1523	{	1912	{
1524	SvREFCNT_dec (grp->fh2);	1913	SvREFCNT_dec (grp->sv2);
1525	grp->fh2 = newSVsv (callback);	1914	grp->sv2 = newSVsv (callback);
		1915	grp->feed = aio_grp_feed;
1526		1916
1527	if (grp->fd2 <= 0)	1917	if (grp->int2 <= 0)
1528	grp->fd2 = 2;	1918	grp->int2 = 2;
1529		1919
1530	aio_grp_feed (grp);	1920	eio_grp_limit (grp, grp->int2);
1531	}	1921	}
1532		1922

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