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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.226 by root, Sun Jan 6 11:48:14 2013 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
34	# if __linux	24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/types.h>
		28	# include <linux/fiemap.h>
		29	# define HAVE_FIEMAP 1
		30	# endif
		31	#endif
		32
		33	/* perl namespace pollution */
		34	#undef VERSION
		35
		36	/* perl stupidly overrides readdir and maybe others */
		37	/* with thread-unsafe versions, imagine that :( */
		38	#undef readdir
		39	#undef opendir
		40	#undef closedir
		41
		42	#ifdef _WIN32
		43
		44	// perl overrides all those nice libc functions
		45
		46	#undef malloc
		47	#undef free
		48	#undef open
		49	#undef read
		50	#undef write
		51	#undef send
		52	#undef recv
		53	#undef stat
		54	#undef lstat
		55	#undef fstat
		56	#undef truncate
		57	#undef ftruncate
		58	#undef open
		59	#undef link
		60	#undef close
		61	#undef unlink
		62	#undef mkdir
		63	#undef rmdir
		64	#undef rename
		65	#undef lseek
		66	#undef opendir
		67	#undef readdir
		68	#undef closedir
		69	#undef chmod
		70	#undef fchmod
		71	#undef dup
		72	#undef dup2
		73	#undef abort
		74	#undef pipe
		75
		76	#define EIO_STRUCT_STAT struct _stati64
		77	#define EIO_STRUCT_STATI64
		78
		79	#else
		80
		81	#include <sys/time.h>
35	# include <sys/sendfile.h>	82	#include <sys/select.h>
36	# elif __freebsd	83	#include <unistd.h>
37	# include <sys/socket.h>	84	#include <utime.h>
38	# include <sys/uio.h>	85	#include <signal.h>
39	# elif __hpux	86
40	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
41	# elif __solaris /* not yet */	88
42	# include <sys/sendfile.h>	89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	SV *sv3, *sv4; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/config.h"
		120	#include "libeio/eio.h"
		121
		122	static int req_invoke (eio_req *req);
		123	#define EIO_FINISH(req) req_invoke (req)
		124	static void req_destroy (eio_req *grp);
		125	#define EIO_DESTROY(req) req_destroy (req)
		126
		127	#include "libeio/eio.c"
		128
		129	#if !HAVE_POSIX_FADVISE
		130	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		131	#endif
		132
		133	#if !HAVE_POSIX_MADVISE
		134	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#ifndef MAP_ANONYMOUS
		138	# ifdef MAP_ANON
		139	# define MAP_ANONYMOUS MAP_ANON
43	# else	140	# else
44	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	142	# endif
46	#endif	143	#endif
47		144
48	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
49	#ifndef NAME_MAX	146	#include "def0.h"
50	# define NAME_MAX 4096
51	#endif
52		147
53	#ifndef PTHREAD_STACK_MIN	148	#ifndef makedev
54	/* care for broken platforms, e.g. windows */	149	# define makedev(maj,min) (((maj) << 8) | (min))
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif	150	#endif
		151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
76	#endif	153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
77		157
78	/* buffer size for various temporary buffers */	158	#if PAGESIZE <= 0
79	#define AIO_BUFSIZE 65536	159	# define PAGESIZE sysconf (_SC_PAGESIZE)
		160	#endif
80		161
81	#define dBUF \	162	/*****************************************************************************/
82	char *aio_buf; \	163
83	LOCK (wrklock); \	164	static void
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	165	fiemap (eio_req *req)
85	UNLOCK (wrklock); \	166	{
86	if (!aio_buf) \	167	req->result = -1;
		168
		169	#if HAVE_FIEMAP
		170	/* assume some c99 */
		171	struct fiemap *fiemap = 0;
		172	size_t end_offset;
		173	int count = req->int3;
		174
		175	req->flags |= EIO_FLAG_PTR1_FREE;
		176
		177	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		178	/* increase in 3.5kb steps */
		179	if (count < 0)
		180	count = 8;
		181
		182	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		183	errno = ENOMEM;
		184	if (!fiemap)
87	return -1;	185	return;
88		186
89	enum {	187	req->ptr1 = fiemap;
90	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};
102		188
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	189	fiemap->fm_start = req->offs;
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	190	fiemap->fm_length = req->size;
		191	fiemap->fm_flags = req->int2;
		192	fiemap->fm_extent_count = count;
105		193
106	typedef struct aio_cb	194	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
107	{	195	return;
108	struct aio_cb *volatile next;
109		196
110	SV *data, *callback;	197	if (req->int3 >= 0 /* not autosizing */
111	SV *fh, *fh2;	198	|| !fiemap->fm_mapped_extents /* no more extents */
112	void *dataptr, *data2ptr;	199	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
113	Stat_t *statdata;	200	goto done;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117		201
118	STRLEN dataoffset;	202	/* else we have to loop -
119	int type;	203	* it would be tempting (actually I tried that first) to just query the
120	int fd, fd2;	204	* number of extents needed, but linux often feels like not returning all
121	int errorno;	205	* extents, without telling us it left any out. this complicates
122	mode_t mode; /* open */	206	* this quite a bit.
		207	*/
123		208
124	unsigned char flags;	209	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
125	unsigned char pri;
126		210
127	SV *self; /* the perl counterpart of this request, if any */	211	for (;;)
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;
130
131	enum {
132	FLAG_CANCELLED = 0x01,
133	};
134
135	typedef aio_cb *aio_req;
136	typedef aio_cb *aio_req_ornot;
137
138	enum {
139	PRI_MIN = -4,
140	PRI_MAX = 4,
141
142	DEFAULT_PRI = 0,
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150	static volatile unsigned int nreqs, nready, npending;
151	static volatile unsigned int max_outstanding = 0xffffffff;
152	static int respipe [2];
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166	typedef struct worker {
167	/* locked by wrklock */
168	struct worker *prev, *next;
169
170	pthread_t tid;
171
172	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */
174	void *dbuf;
175	DIR *dirp;
176	} worker;
177
178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180	static void worker_clear (worker *wrk)
181	{
182	if (wrk->dirp)
183	{	212	{
184	closedir (wrk->dirp);	213	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
185	wrk->dirp = 0;	214	char scratch[3072];
186	}	215	struct fiemap *incmap = (struct fiemap *)scratch;
187		216
188	if (wrk->dbuf)	217	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
189	{	218	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
190	free (wrk->dbuf);	219	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
191	wrk->dbuf = 0;	220	incmap->fm_flags = fiemap->fm_flags;
192	}	221	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
193	}
194		222
195	static void worker_free (worker *wrk)	223	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
196	{
197	wrk->next->prev = wrk->prev;
198	wrk->prev->next = wrk->next;
199
200	free (wrk);
201	}
202
203	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
204	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
205	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
206
207	/*
208	* a somewhat faster data structure might be nice, but
209	* with 8 priorities this actually needs <20 insns
210	* per shift, the most expensive operation.
211	*/
212	typedef struct {
213	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
214	int size;
215	} reqq;
216
217	static reqq req_queue;
218	static reqq res_queue;
219
220	int reqq_push (reqq *q, aio_req req)
221	{
222	int pri = req->pri;
223	req->next = 0;
224
225	if (q->qe[pri])
226	{
227	q->qe[pri]->next = req;
228	q->qe[pri] = req;
229	}
230	else
231	q->qe[pri] = q->qs[pri] = req;
232
233	return q->size++;
234	}
235
236	aio_req reqq_shift (reqq *q)
237	{
238	int pri;
239
240	if (!q->size)
241	return 0;	224	return;
242		225
243	--q->size;	226	if (!incmap->fm_mapped_extents)
		227	goto done;
244		228
245	for (pri = NUM_PRI; pri--; )	229	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
246	{	230	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
247	aio_req req = q->qs[pri];	231	errno = ENOMEM;
248
249	if (req)	232	if (!fiemap)
		233	return;
		234
		235	req->ptr1 = fiemap;
		236
		237	for (count = 0; count < incmap->fm_mapped_extents; ++count)
250	{	238	{
251	if (!(q->qs[pri] = req->next))	239	struct fiemap_extent *e = incmap->fm_extents + count;
252	q->qe[pri] = 0;
253		240
254	return req;	241	if (e->fe_logical + e->fe_length >= end_offset)
		242	goto done;
		243
		244	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		245
		246	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		247	goto done;
		248
255	}	249	}
256	}	250	}
257		251
258	abort ();	252	done:
259	}	253	req->result = 0;
260		254
261	static int poll_cb (int max);	255	#else
262	static void req_invoke (aio_req req);	256	errno = ENOSYS;
		257	#endif
		258	}
		259
		260	/*****************************************************************************/
		261
		262	enum {
		263	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		264	};
		265
		266	typedef eio_req *aio_req;
		267	typedef eio_req *aio_req_ornot;
		268	typedef eio_wd aio_wd;
		269
		270	static SV *on_next_submit;
		271	static int next_pri = EIO_PRI_DEFAULT;
		272	static int max_outstanding;
		273
		274	static s_epipe respipe;
		275
263	static void req_free (aio_req req);	276	static void req_destroy (aio_req req);
264	static void req_cancel (aio_req req);	277	static void req_cancel (aio_req req);
265		278
		279	static void
		280	want_poll (void)
		281	{
		282	/* write a dummy byte to the pipe so fh becomes ready */
		283	s_epipe_signal (&respipe);
		284	}
		285
		286	static void
		287	done_poll (void)
		288	{
		289	/* read any signals sent by the worker threads */
		290	s_epipe_drain (&respipe);
		291	}
		292
266	/* must be called at most once */	293	/* must be called at most once */
267	static SV *req_sv (aio_req req, const char *klass)	294	static SV *
		295	req_sv (aio_req req, HV *stash)
268	{	296	{
269	if (!req->self)	297	if (!req->self)
270	{	298	{
271	req->self = (SV *)newHV ();	299	req->self = (SV *)newHV ();
272	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	300	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
273	}	301	}
274		302
275	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	303	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
276	}	304	}
277		305
278	static aio_req SvAIO_REQ (SV *sv)	306	static SV *
		307	newSVaio_wd (aio_wd wd)
		308	{
		309	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		310	}
		311
		312	static aio_req
		313	SvAIO_REQ (SV *sv)
279	{	314	{
280	MAGIC *mg;	315	MAGIC *mg;
281		316
282	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	317	if (!SvROK (sv)
		318	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		319	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		320	&& SvSTASH (SvRV (sv)) != aio_req_stash
		321	&& !sv_derived_from (sv, "IO::AIO::REQ")))
283	croak ("object of class " AIO_REQ_KLASS " expected");	322	croak ("object of class IO::AIO::REQ expected");
284		323
285	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	324	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
286		325
287	return mg ? (aio_req)mg->mg_ptr : 0;	326	return mg ? (aio_req)mg->mg_ptr : 0;
288	}	327	}
289		328
		329	static aio_wd
		330	SvAIO_WD (SV *sv)
		331	{
		332	if (!SvROK (sv)
		333	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		334	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		335	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		336
		337	return (aio_wd)(long)SvIVX (SvRV (sv));
		338	}
		339
		340	static void
290	static void aio_grp_feed (aio_req grp)	341	aio_grp_feed (aio_req grp)
291	{	342	{
292	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	343	if (grp->sv2 && SvOK (grp->sv2))
293	{	344	{
294	int old_len = grp->length;
295
296	if (grp->fh2 && SvOK (grp->fh2))
297	{
298	dSP;	345	dSP;
299		346
300	ENTER;	347	ENTER;
301	SAVETMPS;	348	SAVETMPS;
302	PUSHMARK (SP);	349	PUSHMARK (SP);
303	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	350	XPUSHs (req_sv (grp, aio_grp_stash));
304	PUTBACK;	351	PUTBACK;
305	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	352	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
306	SPAGAIN;	353	SPAGAIN;
307	FREETMPS;	354	FREETMPS;
308	LEAVE;	355	LEAVE;
309	}
310
311	/* stop if no progress has been made */
312	if (old_len == grp->length)
313	{
314	SvREFCNT_dec (grp->fh2);
315	grp->fh2 = 0;
316	break;
317	}
318	}	356	}
319	}	357	}
320		358
321	static void aio_grp_dec (aio_req grp)	359	static void
		360	req_submit (eio_req *req)
322	{	361	{
323	--grp->length;	362	eio_submit (req);
324		363
325	/* call feeder, if applicable */	364	if (expect_false (on_next_submit))
326	aio_grp_feed (grp);
327
328	/* finish, if done */
329	if (!grp->length && grp->fd)
330	{	365	{
331	req_invoke (grp);	366	dSP;
332	req_free (grp);	367	SV *cb = sv_2mortal (on_next_submit);
		368
		369	on_next_submit = 0;
		370
		371	PUSHMARK (SP);
		372	PUTBACK;
		373	call_sv (cb, G_DISCARD | G_EVAL);
333	}	374	}
334	}	375	}
335		376
336	static void poll_wait ()	377	static int
		378	req_invoke (eio_req *req)
337	{	379	{
338	fd_set rfd;	380	if (req->flags & FLAG_SV2_RO_OFF)
		381	SvREADONLY_off (req->sv2);
339		382
340	while (nreqs)	383	if (!EIO_CANCELLED (req) && req->callback)
341	{	384	{
342	int size;
343	if (WORDREAD_UNSAFE) LOCK (reslock);
344	size = res_queue.size;
345	if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347	if (size)
348	return;
349
350	FD_ZERO(&rfd);
351	FD_SET(respipe [0], &rfd);
352
353	select (respipe [0] + 1, &rfd, 0, 0, 0);
354	}
355	}
356
357	static void req_invoke (aio_req req)
358	{
359	dSP;	385	dSP;
		386	static SV *sv_result_cache; /* caches the result integer SV */
		387	SV *sv_result;
360		388
361	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
362	{
363	ENTER;	389	ENTER;
364	SAVETMPS;	390	SAVETMPS;
365	PUSHMARK (SP);	391	PUSHMARK (SP);
366	EXTEND (SP, 1);	392	EXTEND (SP, 1);
367		393
		394	/* do not recreate the result IV from scratch each time */
		395	if (expect_true (sv_result_cache))
		396	{
		397	sv_result = sv_result_cache; sv_result_cache = 0;
		398	SvIV_set (sv_result, req->result);
		399	SvIOK_only (sv_result);
		400	}
		401	else
		402	{
		403	sv_result = newSViv (req->result);
		404	SvREADONLY_on (sv_result);
		405	}
		406
368	switch (req->type)	407	switch (req->type)
369	{	408	{
		409	case EIO_WD_OPEN:
		410	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		411	break;
		412
370	case REQ_READDIR:	413	case EIO_READDIR:
371	{	414	{
372	SV *rv = &PL_sv_undef;	415	SV *rv = &PL_sv_undef;
373		416
374	if (req->result >= 0)	417	if (req->result >= 0)
375	{	418	{
376	int i;	419	int i;
377	char *buf = req->data2ptr;	420	char *names = (char *)req->ptr2;
		421	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
378	AV *av = newAV ();	422	AV *av = newAV ();
379		423
380	av_extend (av, req->result - 1);	424	av_extend (av, req->result - 1);
381		425
382	for (i = 0; i < req->result; ++i)	426	for (i = 0; i < req->result; ++i)
383	{	427	{
384	SV *sv = newSVpv (buf, 0);	428	if (req->int1 & EIO_READDIR_DENTS)
		429	{
		430	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
385		431
		432	if (req->int1 & EIO_READDIR_CUSTOM2)
		433	{
		434	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		435	AV *avent = newAV ();
		436
		437	av_extend (avent, 2);
		438
		439	if (!sv_type [ent->type])
		440	{
		441	sv_type [ent->type] = newSViv (ent->type);
		442	SvREADONLY_on (sv_type [ent->type]);
		443	}
		444
		445	av_store (avent, 0, namesv);
		446	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		447	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		448
		449	av_store (av, i, newRV_noinc ((SV *)avent));
		450	}
		451	else
386	av_store (av, i, sv);	452	av_store (av, i, namesv);
		453
		454	++ent;
		455	}
		456	else
		457	{
		458	SV *name = newSVpv (names, 0);
		459	av_store (av, i, name);
387	buf += SvCUR (sv) + 1;	460	names += SvCUR (name) + 1;
		461	}
388	}	462	}
389		463
390	rv = sv_2mortal (newRV_noinc ((SV *)av));	464	rv = sv_2mortal (newRV_noinc ((SV *)av));
391	}	465	}
392		466
393	PUSHs (rv);	467	PUSHs (rv);
		468
		469	if (req->int1 & EIO_READDIR_CUSTOM1)
		470	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
394	}	471	}
395	break;	472	break;
396		473
397	case REQ_OPEN:	474	case EIO_OPEN:
398	{	475	{
399	/* convert fd to fh */	476	/* convert fd to fh */
400	SV *fh;	477	SV *fh = &PL_sv_undef;
401		478
402	PUSHs (sv_2mortal (newSViv (req->result)));	479	if (req->result >= 0)
403	PUTBACK;	480	{
404	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	481	GV *gv = (GV *)sv_newmortal ();
405	SPAGAIN;	482	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		483	char sym [64];
		484	int symlen;
		485
		486	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		487	gv_init (gv, aio_stash, sym, symlen, 0);
406		488
407	fh = SvREFCNT_inc (POPs);	489	symlen = snprintf (
		490	sym,
		491	sizeof (sym),
		492	"%s&=%d",
		493	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		494	(int)req->result
		495	);
408		496
		497	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		498	fh = (SV *)gv;
		499	}
		500
409	PUSHMARK (SP);	501	PUSHs (fh);
410	XPUSHs (sv_2mortal (fh));
411	}	502	}
412	break;	503	break;
413		504
		505	case EIO_STATVFS:
		506	case EIO_FSTATVFS:
		507	{
		508	SV *rv = &PL_sv_undef;
		509
		510	#ifndef _WIN32
		511	if (req->result >= 0)
		512	{
		513	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		514	HV *hv = newHV ();
		515	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		516	* chooses to make it a struct.
		517	*/
		518	unsigned long fsid = 0;
		519	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		520
		521	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		522
		523	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		524	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		525	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		526	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		527	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		528	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		529	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		530	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		531	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		532	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		533	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		534	}
		535	#endif
		536
		537	PUSHs (rv);
		538	}
		539
		540	break;
		541
414	case REQ_GROUP:	542	case EIO_GROUP:
415	req->fd = 2; /* mark group as finished */	543	req->int1 = 2; /* mark group as finished */
416		544
417	if (req->data)	545	if (req->sv1)
418	{	546	{
419	int i;	547	int i;
420	AV *av = (AV *)req->data;	548	AV *av = (AV *)req->sv1;
421		549
422	EXTEND (SP, AvFILL (av) + 1);	550	EXTEND (SP, AvFILL (av) + 1);
423	for (i = 0; i <= AvFILL (av); ++i)	551	for (i = 0; i <= AvFILL (av); ++i)
424	PUSHs (*av_fetch (av, i, 0));	552	PUSHs (*av_fetch (av, i, 0));
425	}	553	}
426	break;	554	break;
427		555
428	case REQ_NOP:	556	case EIO_NOP:
429	case REQ_BUSY:	557	case EIO_BUSY:
430	break;	558	break;
431		559
		560	case EIO_READLINK:
		561	case EIO_REALPATH:
		562	if (req->result > 0)
		563	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		564	break;
		565
		566	case EIO_STAT:
		567	case EIO_LSTAT:
		568	case EIO_FSTAT:
		569	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		570
		571	if (!(PL_laststatval = req->result))
		572	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		573	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		574
		575	PUSHs (sv_result);
		576	break;
		577
		578	case EIO_SEEK:
		579	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		580	break;
		581
		582	case EIO_READ:
		583	{
		584	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		585	*SvEND (req->sv2) = 0;
		586	SvPOK_only (req->sv2);
		587	SvSETMAGIC (req->sv2);
		588	PUSHs (sv_result);
		589	}
		590	break;
		591
		592	case EIO_CUSTOM:
		593	if (req->feed == fiemap)
		594	{
		595	#if HAVE_FIEMAP
		596	if (!req->result)
		597	{
		598	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		599
		600	if (fiemap->fm_extent_count)
		601	{
		602	AV *av = newAV ();
		603	int i;
		604
		605	while (fiemap->fm_mapped_extents)
		606	{
		607	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		608	AV *ext_av = newAV ();
		609
		610	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		611	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		612	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		613	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		614
		615	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		616	}
		617
		618	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		619	}
		620	else
		621	{
		622	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		623	PUSHs (sv_result);
		624	}
		625	}
		626	#endif
		627	}
		628	else
		629	PUSHs (sv_result);
		630	break;
		631
		632	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		633	if (req->result > 0)
		634	SvIV_set (sv_result, 0);
		635	/* FALLTHROUGH */
		636
432	default:	637	default:
433	PUSHs (sv_2mortal (newSViv (req->result)));	638	PUSHs (sv_result);
434	break;	639	break;
435	}	640	}
436		641
437	errno = req->errorno;	642	errno = req->errorno;
438		643
439	PUTBACK;	644	PUTBACK;
440	call_sv (req->callback, G_VOID | G_EVAL);	645	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
441	SPAGAIN;	646	SPAGAIN;
		647
		648	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		649	SvREFCNT_dec (sv_result);
		650	else
		651	sv_result_cache = sv_result;
442		652
443	FREETMPS;	653	FREETMPS;
444	LEAVE;	654	LEAVE;
		655
		656	PUTBACK;
445	}	657	}
446		658
447	if (req->grp)	659	return !!SvTRUE (ERRSV);
448	{
449	aio_req grp = req->grp;
450
451	/* unlink request */
452	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
453	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
454
455	if (grp->grp_first == req)
456	grp->grp_first = req->grp_next;
457
458	aio_grp_dec (grp);
459	}
460
461	if (SvTRUE (ERRSV))
462	{
463	req_free (req);
464	croak (0);
465	}
466	}	660	}
467		661
468	static void req_free (aio_req req)	662	static void
		663	req_destroy (aio_req req)
469	{	664	{
470	if (req->self)	665	if (req->self)
471	{	666	{
472	sv_unmagic (req->self, PERL_MAGIC_ext);	667	sv_unmagic (req->self, PERL_MAGIC_ext);
473	SvREFCNT_dec (req->self);	668	SvREFCNT_dec (req->self);
474	}	669	}
475		670
476	SvREFCNT_dec (req->data);
477	SvREFCNT_dec (req->fh);	671	SvREFCNT_dec (req->sv1);
478	SvREFCNT_dec (req->fh2);	672	SvREFCNT_dec (req->sv2);
		673	SvREFCNT_dec (req->sv3);
		674	SvREFCNT_dec (req->sv4);
479	SvREFCNT_dec (req->callback);	675	SvREFCNT_dec (req->callback);
480	Safefree (req->statdata);
481		676
482	if (req->type == REQ_READDIR)
483	free (req->data2ptr);
484
485	Safefree (req);	677	free (req);
486	}	678	}
487		679
		680	static void
488	static void req_cancel_subs (aio_req grp)	681	req_cancel_subs (aio_req grp)
489	{	682	{
490	aio_req sub;
491
492	if (grp->type != REQ_GROUP)	683	if (grp->type != EIO_GROUP)
493	return;	684	return;
494		685
495	SvREFCNT_dec (grp->fh2);	686	SvREFCNT_dec (grp->sv2);
496	grp->fh2 = 0;	687	grp->sv2 = 0;
497		688
498	for (sub = grp->grp_first; sub; sub = sub->grp_next)	689	eio_grp_cancel (grp);
499	req_cancel (sub);
500	}	690	}
501		691
502	static void req_cancel (aio_req req)	692	static void ecb_cold
		693	create_respipe (void)
503	{	694	{
504	req->flags |= FLAG_CANCELLED;	695	if (s_epipe_renew (&respipe))
505		696	croak ("IO::AIO: unable to initialize result pipe");
506	req_cancel_subs (req);
507	}	697	}
508		698
509	static int poll_cb (int max)	699	static void
		700	poll_wait (void)
510	{	701	{
511	dSP;	702	while (eio_nreqs ())
512	int count = 0;	703	{
513	int do_croak = 0;	704	int size;
514	aio_req req;
515		705
		706	X_LOCK (reslock);
		707	size = res_queue.size;
		708	X_UNLOCK (reslock);
		709
		710	if (size)
		711	return;
		712
		713	etp_maybe_start_thread ();
		714
		715	s_epipe_wait (&respipe);
		716	}
		717	}
		718
		719	static int
		720	poll_cb (void)
		721	{
516	for (;;)	722	for (;;)
517	{	723	{
518	while (max <= 0 || count < max)	724	int res = eio_poll ();
		725
		726	if (res > 0)
		727	croak (0);
		728
		729	if (!max_outstanding || max_outstanding > eio_nreqs ())
		730	return res;
		731
		732	poll_wait ();
		733	}
		734	}
		735
		736	static void ecb_cold
		737	reinit (void)
		738	{
		739	create_respipe ();
		740
		741	if (eio_init (want_poll, done_poll) < 0)
		742	croak ("IO::AIO: unable to initialise eio library");
		743	}
		744
		745	/*****************************************************************************/
		746
		747	#if !_POSIX_MAPPED_FILES
		748	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		749	# define munmap(addr,length) EIO_ENOSYS ()
		750	#endif
		751
		752	#if !_POSIX_MEMORY_PROTECTION
		753	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		754	# define PROT_NONE 0
		755	# define PROT_WRITE 0
		756	# define MAP_PRIVATE 0
		757	# define MAP_SHARED 0
		758	# define MAP_FIXED 0
		759	#endif
		760
		761	#define MMAP_MAGIC PERL_MAGIC_ext
		762
		763	static int ecb_cold
		764	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		765	{
		766	int old_errno = errno;
		767	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		768	errno = old_errno;
		769
		770	mg->mg_obj = 0; /* just in case */
		771
		772	SvREADONLY_off (sv);
		773
		774	if (SvPVX (sv) != mg->mg_ptr)
		775	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		776
		777	SvCUR_set (sv, 0);
		778	SvPVX (sv) = 0;
		779	SvOK_off (sv);
		780
		781	return 0;
		782	}
		783
		784	static MGVTBL mmap_vtbl = {
		785	0, 0, 0, 0, mmap_free
		786	};
		787
		788	/*****************************************************************************/
		789
		790	static SV *
		791	get_cb (SV *cb_sv)
		792	{
		793	SvGETMAGIC (cb_sv);
		794	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		795	}
		796
		797	static aio_req ecb_noinline
		798	dreq (SV *callback)
		799	{
		800	SV *cb_cv;
		801	aio_req req;
		802	int req_pri = next_pri;
		803	next_pri = EIO_PRI_DEFAULT;
		804
		805	cb_cv = get_cb (callback);
		806
		807	req = calloc (sizeof (*req), 1);
		808	if (!req)
		809	croak ("out of memory during eio_req allocation");
		810
		811	req->callback = SvREFCNT_inc (cb_cv);
		812	req->pri = req_pri;
		813
		814	return req;
		815	}
		816
		817	#define dREQ \
		818	aio_req req = dreq (callback); \
		819
		820	#define REQ_SEND \
		821	PUTBACK; \
		822	req_submit (req); \
		823	SPAGAIN; \
		824	\
		825	if (GIMME_V != G_VOID) \
		826	XPUSHs (req_sv (req, aio_req_stash));
		827
		828	ecb_inline void
		829	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		830	{
		831	if (expect_false (SvROK (path)))
		832	{
		833	SV *rv = SvRV (path);
		834	SV *wdob;
		835
		836	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
519	{	837	{
520	LOCK (reslock);	838	path = AvARRAY (rv)[1];
521	req = reqq_shift (&res_queue);	839	wdob = AvARRAY (rv)[0];
522		840
523	if (req)	841	if (SvOK (wdob))
524	{	842	{
525	--npending;	843	*wd = SvAIO_WD (wdob);
526		844	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
527	if (!res_queue.size)
528	{
529	/* read any signals sent by the worker threads */
530	char buf [32];
531	while (read (respipe [0], buf, 32) == 32)
532	;
533	}
534	}
535
536	UNLOCK (reslock);
537
538	if (!req)
539	break;
540
541	--nreqs;
542
543	if (req->type == REQ_QUIT)
544	--started;
545	else if (req->type == REQ_GROUP && req->length)
546	{
547	req->fd = 1; /* mark request as delayed */
548	continue;
549	}	845	}
550	else	846	else
551	{	847	*wd = EIO_INVALID_WD;
552	if (req->type == REQ_READ)
553	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556	SvREADONLY_off (req->data);
557
558	if (req->statdata)
559	{
560	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561	PL_laststatval = req->result;
562	PL_statcache = *(req->statdata);
563	}
564
565	req_invoke (req);
566
567	count++;
568	}
569
570	req_free (req);
571	}	848	}
		849	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		850	{
		851	*wd = (aio_wd)(long)SvIVX (rv);
		852	*wdsv = SvREFCNT_inc_NN (rv);
		853	*ptr = ".";
		854	return; /* path set to "." */
		855	}
		856	else
		857	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		858	}
572		859
573	if (nreqs <= max_outstanding)	860	*pathsv = newSVsv (path);
		861	*ptr = SvPVbyte_nolen (*pathsv);
		862	}
		863
		864	static void ecb_noinline
		865	req_set_path1 (aio_req req, SV *path)
		866	{
		867	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		868	}
		869
		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;
		874
		875	switch (SvTYPE (rv))
		876	{
		877	case SVt_PVIO:
		878	case SVt_PVLV:
		879	case SVt_PVGV:
		880	req->type = type_fh;
		881	req->sv1 = newSVsv (fh_or_path);
		882	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
574	break;	883	break;
575		884
576	poll_wait ();	885	default:
577		886	req->type = type_path;
578	max = 0;	887	req_set_path1 (req, fh_or_path);
		888	break;
579	}	889	}
580
581	return count;
582	}	890	}
583		891
584	static void *aio_proc(void *arg);	892	XS(boot_IO__AIO) ecb_cold;
585		893
586	static void start_thread (void)
587	{
588	sigset_t fullsigset, oldsigset;
589	pthread_attr_t attr;
590
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	pthread_attr_init (&attr);
597	pthread_attr_setstacksize (&attr, STACKSIZE);
598	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
599
600	sigfillset (&fullsigset);
601
602	LOCK (wrklock);
603	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
604
605	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
606	{
607	wrk->prev = &wrk_first;
608	wrk->next = wrk_first.next;
609	wrk_first.next->prev = wrk;
610	wrk_first.next = wrk;
611	++started;
612	}
613	else
614	free (wrk);
615
616	sigprocmask (SIG_SETMASK, &oldsigset, 0);
617	UNLOCK (wrklock);
618	}
619
620	static void req_send (aio_req req)
621	{
622	while (started < wanted && nreqs >= started)
623	start_thread ();
624
625	++nreqs;
626
627	LOCK (reqlock);
628	++nready;
629	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	req_send (req);
644	}
645
646	static void min_parallel (int nthreads)
647	{
648	if (wanted < nthreads)
649	wanted = nthreads;
650	}
651
652	static void max_parallel (int nthreads)
653	{
654	int cur = started;
655
656	if (wanted > nthreads)
657	wanted = nthreads;
658
659	while (cur > wanted)
660	{
661	end_thread ();
662	cur--;
663	}
664
665	while (started > wanted)
666	{
667	poll_wait ();
668	poll_cb (0);
669	}
670	}
671
672	static void create_pipe ()
673	{
674	if (pipe (respipe))
675	croak ("unable to initialize result pipe");
676
677	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
678	croak ("cannot set result pipe to nonblocking mode");
679
680	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
681	croak ("cannot set result pipe to nonblocking mode");
682	}
683
684	/*****************************************************************************/
685	/* work around various missing functions */
686
687	#if !HAVE_PREADWRITE
688	# define pread aio_pread
689	# define pwrite aio_pwrite
690
691	/*
692	* make our pread/pwrite safe against themselves, but not against
693	* normal read/write by using a mutex. slows down execution a lot,
694	* but that's your problem, not mine.
695	*/
696	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
697
698	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
699	{
700	ssize_t res;
701	off_t ooffset;
702
703	LOCK (preadwritelock);
704	ooffset = lseek (fd, 0, SEEK_CUR);
705	lseek (fd, offset, SEEK_SET);
706	res = read (fd, buf, count);
707	lseek (fd, ooffset, SEEK_SET);
708	UNLOCK (preadwritelock);
709
710	return res;
711	}
712
713	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
714	{
715	ssize_t res;
716	off_t ooffset;
717
718	LOCK (preadwritelock);
719	ooffset = lseek (fd, 0, SEEK_CUR);
720	lseek (fd, offset, SEEK_SET);
721	res = write (fd, buf, count);
722	lseek (fd, offset, SEEK_SET);
723	UNLOCK (preadwritelock);
724
725	return res;
726	}
727	#endif
728
729	#if !HAVE_FDATASYNC
730	# define fdatasync fsync
731	#endif
732
733	#if !HAVE_READAHEAD
734	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
735
736	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
737	{
738	dBUF;
739
740	while (count > 0)
741	{
742	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
743
744	pread (fd, aio_buf, len, offset);
745	offset += len;
746	count -= len;
747	}
748
749	errno = 0;
750	}
751
752	#endif
753
754	#if !HAVE_READDIR_R
755	# define readdir_r aio_readdir_r
756
757	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
758
759	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
760	{
761	struct dirent *e;
762	int errorno;
763
764	LOCK (readdirlock);
765
766	e = readdir (dirp);
767	errorno = errno;
768
769	if (e)
770	{
771	*res = ent;
772	strcpy (ent->d_name, e->d_name);
773	}
774	else
775	*res = 0;
776
777	UNLOCK (readdirlock);
778
779	errno = errorno;
780	return e ? 0 : -1;
781	}
782	#endif
783
784	/* sendfile always needs emulation */
785	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
786	{
787	ssize_t res;
788
789	if (!count)
790	return 0;
791
792	#if HAVE_SENDFILE
793	# if __linux
794	res = sendfile (ofd, ifd, &offset, count);
795
796	# elif __freebsd
797	/*
798	* Of course, the freebsd sendfile is a dire hack with no thoughts
799	* wasted on making it similar to other I/O functions.
800	*/
801	{
802	off_t sbytes;
803	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
804
805	if (res < 0 && sbytes)
806	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
807	res = sbytes;
808	}
809
810	# elif __hpux
811	res = sendfile (ofd, ifd, offset, count, 0, 0);
812
813	# elif __solaris
814	{
815	struct sendfilevec vec;
816	size_t sbytes;
817
818	vec.sfv_fd = ifd;
819	vec.sfv_flag = 0;
820	vec.sfv_off = offset;
821	vec.sfv_len = count;
822
823	res = sendfilev (ofd, &vec, 1, &sbytes);
824
825	if (res < 0 && sbytes)
826	res = sbytes;
827	}
828
829	# endif
830	#else
831	res = -1;
832	errno = ENOSYS;
833	#endif
834
835	if (res < 0
836	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
837	#if __solaris
838	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
839	#endif
840	)
841	)
842	{
843	/* emulate sendfile. this is a major pain in the ass */
844	dBUF;
845
846	res = 0;
847
848	while (count)
849	{
850	ssize_t cnt;
851
852	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
853
854	if (cnt <= 0)
855	{
856	if (cnt && !res) res = -1;
857	break;
858	}
859
860	cnt = write (ofd, aio_buf, cnt);
861
862	if (cnt <= 0)
863	{
864	if (cnt && !res) res = -1;
865	break;
866	}
867
868	offset += cnt;
869	res += cnt;
870	count -= cnt;
871	}
872	}
873
874	return res;
875	}
876
877	/* read a full directory */
878	static void scandir_ (aio_req req, worker *self)
879	{
880	DIR *dirp;
881	union
882	{
883	struct dirent d;
884	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
885	} *u;
886	struct dirent *entp;
887	char *name, *names;
888	int memlen = 4096;
889	int memofs = 0;
890	int res = 0;
891	int errorno;
892
893	LOCK (wrklock);
894	self->dirp = dirp = opendir (req->dataptr);
895	self->dbuf = u = malloc (sizeof (*u));
896	req->data2ptr = names = malloc (memlen);
897	UNLOCK (wrklock);
898
899	if (dirp && u && names)
900	for (;;)
901	{
902	errno = 0;
903	readdir_r (dirp, &u->d, &entp);
904
905	if (!entp)
906	break;
907
908	name = entp->d_name;
909
910	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
911	{
912	int len = strlen (name) + 1;
913
914	res++;
915
916	while (memofs + len > memlen)
917	{
918	memlen *= 2;
919	LOCK (wrklock);
920	req->data2ptr = names = realloc (names, memlen);
921	UNLOCK (wrklock);
922
923	if (!names)
924	break;
925	}
926
927	memcpy (names + memofs, name, len);
928	memofs += len;
929	}
930	}
931
932	if (errno)
933	res = -1;
934
935	req->result = res;
936	}
937
938	/*****************************************************************************/
939
940	static void *aio_proc (void *thr_arg)
941	{
942	aio_req req;
943	int type;
944	worker *self = (worker *)thr_arg;
945
946	do
947	{
948	LOCK (reqlock);
949
950	for (;;)
951	{
952	self->req = req = reqq_shift (&req_queue);
953
954	if (req)
955	break;
956
957	pthread_cond_wait (&reqwait, &reqlock);
958	}
959
960	--nready;
961
962	UNLOCK (reqlock);
963
964	errno = 0; /* strictly unnecessary */
965	type = req->type; /* remember type for QUIT check */
966
967	if (!(req->flags & FLAG_CANCELLED))
968	switch (type)
969	{
970	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
971	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
972
973	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
974	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
975
976	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
977	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
978	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
979
980	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
981	case REQ_CLOSE: req->result = close (req->fd); break;
982	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
983	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
984	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
985	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
986	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
987
988	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
989	case REQ_FSYNC: req->result = fsync (req->fd); break;
990	case REQ_READDIR: scandir_ (req, self); break;
991
992	case REQ_BUSY:
993	{
994	struct timeval tv;
995
996	tv.tv_sec = req->fd;
997	tv.tv_usec = req->fd2;
998
999	req->result = select (0, 0, 0, 0, &tv);
1000	}
1001
1002	case REQ_GROUP:
1003	case REQ_NOP:
1004	case REQ_QUIT:
1005	break;
1006
1007	default:
1008	req->result = ENOSYS;
1009	break;
1010	}
1011
1012	req->errorno = errno;
1013
1014	LOCK (reslock);
1015
1016	++npending;
1017
1018	if (!reqq_push (&res_queue, req))
1019	/* write a dummy byte to the pipe so fh becomes ready */
1020	write (respipe [1], &respipe, 1);
1021
1022	self->req = 0;
1023	worker_clear (self);
1024
1025	UNLOCK (reslock);
1026	}
1027	while (type != REQ_QUIT);
1028
1029	LOCK (wrklock);
1030	worker_free (self);
1031	UNLOCK (wrklock);
1032
1033	return 0;
1034	}
1035
1036	/*****************************************************************************/
1037
1038	static void atfork_prepare (void)
1039	{
1040	LOCK (wrklock);
1041	LOCK (reqlock);
1042	LOCK (reslock);
1043	#if !HAVE_PREADWRITE
1044	LOCK (preadwritelock);
1045	#endif
1046	#if !HAVE_READDIR_R
1047	LOCK (readdirlock);
1048	#endif
1049	}
1050
1051	static void atfork_parent (void)
1052	{
1053	#if !HAVE_READDIR_R
1054	UNLOCK (readdirlock);
1055	#endif
1056	#if !HAVE_PREADWRITE
1057	UNLOCK (preadwritelock);
1058	#endif
1059	UNLOCK (reslock);
1060	UNLOCK (reqlock);
1061	UNLOCK (wrklock);
1062	}
1063
1064	static void atfork_child (void)
1065	{
1066	aio_req prv;
1067
1068	while (prv = reqq_shift (&req_queue))
1069	req_free (prv);
1070
1071	while (prv = reqq_shift (&res_queue))
1072	req_free (prv);
1073
1074	while (wrk_first.next != &wrk_first)
1075	{
1076	worker *wrk = wrk_first.next;
1077
1078	if (wrk->req)
1079	req_free (wrk->req);
1080
1081	worker_clear (wrk);
1082	worker_free (wrk);
1083	}
1084
1085	started = 0;
1086	nreqs = 0;
1087
1088	close (respipe [0]);
1089	close (respipe [1]);
1090	create_pipe ();
1091
1092	atfork_parent ();
1093	}
1094
1095	#define dREQ \
1096	aio_req req; \
1097	int req_pri = next_pri; \
1098	next_pri = DEFAULT_PRI + PRI_BIAS; \
1099	\
1100	if (SvOK (callback) && !SvROK (callback)) \
1101	croak ("callback must be undef or of reference type"); \
1102	\
1103	Newz (0, req, 1, aio_cb); \
1104	if (!req) \
1105	croak ("out of memory during aio_req allocation"); \
1106	\
1107	req->callback = newSVsv (callback); \
1108	req->pri = req_pri
1109
1110	#define REQ_SEND \
1111	req_send (req); \
1112	\
1113	if (GIMME_V != G_VOID) \
1114	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1115
1116	MODULE = IO::AIO PACKAGE = IO::AIO	894	MODULE = IO::AIO PACKAGE = IO::AIO
1117		895
1118	PROTOTYPES: ENABLE	896	PROTOTYPES: ENABLE
1119		897
1120	BOOT:	898	BOOT:
1121	{	899	{
		900	static const struct {
		901	const char *name;
		902	IV iv;
		903	} *civ, const_iv[] = {
		904	# define const_niv(name, value) { # name, (IV) value },
		905	# define const_iv(name) { # name, (IV) name },
		906	# define const_eio(name) { # name, (IV) EIO_ ## name },
		907
		908	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		909
		910	const_iv (ENOSYS)
		911	const_iv (EXDEV)
		912	const_iv (EBADR)
		913
		914	const_iv (O_RDONLY)
		915	const_iv (O_WRONLY)
		916	const_iv (O_RDWR)
		917	const_iv (O_CREAT)
		918	const_iv (O_TRUNC)
		919	const_iv (O_EXCL)
		920	const_iv (O_APPEND)
		921
		922	const_iv (O_ASYNC)
		923	const_iv (O_DIRECT)
		924	const_iv (O_NOATIME)
		925
		926	const_iv (O_CLOEXEC)
		927	const_iv (O_NOCTTY)
		928	const_iv (O_NOFOLLOW)
		929	const_iv (O_NONBLOCK)
		930	const_iv (O_EXEC)
		931	const_iv (O_SEARCH)
		932	const_iv (O_DIRECTORY)
		933	const_iv (O_DSYNC)
		934	const_iv (O_RSYNC)
		935	const_iv (O_SYNC)
		936	const_iv (O_TTY_INIT)
		937
		938	const_iv (S_IFIFO)
		939	const_iv (S_IFCHR)
		940	const_iv (S_IFBLK)
		941	const_iv (S_IFLNK)
		942	const_iv (S_IFREG)
		943	const_iv (S_IFDIR)
		944	const_iv (S_IFWHT)
		945	const_iv (S_IFSOCK)
		946	const_iv (S_IFMT)
		947
		948	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		949	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		950	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		951	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		952	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		953	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		954
		955	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		956	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		957	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		958	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		959	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		960
		961	const_iv (ST_RDONLY)
		962	const_iv (ST_NOSUID)
		963	const_iv (ST_NODEV)
		964	const_iv (ST_NOEXEC)
		965	const_iv (ST_SYNCHRONOUS)
		966	const_iv (ST_MANDLOCK)
		967	const_iv (ST_WRITE)
		968	const_iv (ST_APPEND)
		969	const_iv (ST_IMMUTABLE)
		970	const_iv (ST_NOATIME)
		971	const_iv (ST_NODIRATIME)
		972	const_iv (ST_RELATIME)
		973
		974	const_iv (PROT_NONE)
		975	const_iv (PROT_EXEC)
		976	const_iv (PROT_READ)
		977	const_iv (PROT_WRITE)
		978
		979	/*const_iv (MAP_FIXED)*/
		980	const_iv (MAP_PRIVATE)
		981	const_iv (MAP_SHARED)
		982	const_iv (MAP_ANONYMOUS)
		983
		984	/* linuxish */
		985	const_iv (MAP_HUGETLB)
		986	const_iv (MAP_LOCKED)
		987	const_iv (MAP_NORESERVE)
		988	const_iv (MAP_POPULATE)
		989	const_iv (MAP_NONBLOCK)
		990
		991	const_iv (FIEMAP_FLAG_SYNC)
		992	const_iv (FIEMAP_FLAG_XATTR)
		993	const_iv (FIEMAP_FLAGS_COMPAT)
		994	const_iv (FIEMAP_EXTENT_LAST)
		995	const_iv (FIEMAP_EXTENT_UNKNOWN)
		996	const_iv (FIEMAP_EXTENT_DELALLOC)
		997	const_iv (FIEMAP_EXTENT_ENCODED)
		998	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		999	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1000	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1001	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1002	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1003	const_iv (FIEMAP_EXTENT_MERGED)
		1004	const_iv (FIEMAP_EXTENT_SHARED)
		1005
		1006	const_iv (SPLICE_F_MOVE)
		1007	const_iv (SPLICE_F_NONBLOCK)
		1008	const_iv (SPLICE_F_MORE)
		1009	const_iv (SPLICE_F_GIFT)
		1010
		1011	const_iv (SEEK_DATA)
		1012	const_iv (SEEK_HOLE)
		1013
		1014	/* libeio constants */
		1015	const_eio (SEEK_SET)
		1016	const_eio (SEEK_CUR)
		1017	const_eio (SEEK_END)
		1018
		1019	const_eio (MCL_FUTURE)
		1020	const_eio (MCL_CURRENT)
		1021
		1022	const_eio (MS_ASYNC)
		1023	const_eio (MS_INVALIDATE)
		1024	const_eio (MS_SYNC)
		1025
		1026	const_eio (MT_MODIFY)
		1027
		1028	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1029	const_eio (SYNC_FILE_RANGE_WRITE)
		1030	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1031
		1032	const_eio (FALLOC_FL_KEEP_SIZE)
		1033	const_eio (FALLOC_FL_PUNCH_HOLE)
		1034
		1035	const_eio (READDIR_DENTS)
		1036	const_eio (READDIR_DIRS_FIRST)
		1037	const_eio (READDIR_STAT_ORDER)
		1038	const_eio (READDIR_FOUND_UNKNOWN)
		1039
		1040	const_eio (DT_UNKNOWN)
		1041	const_eio (DT_FIFO)
		1042	const_eio (DT_CHR)
		1043	const_eio (DT_DIR)
		1044	const_eio (DT_BLK)
		1045	const_eio (DT_REG)
		1046	const_eio (DT_LNK)
		1047	const_eio (DT_SOCK)
		1048	const_eio (DT_WHT)
		1049	};
		1050
1122	HV *stash = gv_stashpv ("IO::AIO", 1);	1051	aio_stash = gv_stashpv ("IO::AIO" , 1);
1123	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1052	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1124	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1053	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1125	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1054	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1126		1055
1127	create_pipe ();	1056	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1128	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1057	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1129	}
1130		1058
		1059	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1060
		1061	reinit ();
		1062	}
		1063
1131	void	1064	void
1132	min_parallel (int nthreads)	1065	reinit ()
1133	PROTOTYPE: $	1066	PROTOTYPE:
1134		1067
1135	void	1068	void
1136	max_parallel (int nthreads)	1069	max_poll_reqs (unsigned int nreqs)
1137	PROTOTYPE: $
1138
1139	int
1140	max_outstanding (int maxreqs)
1141	PROTOTYPE: $	1070	PROTOTYPE: $
1142	CODE:	1071	CODE:
1143	RETVAL = max_outstanding;	1072	eio_set_max_poll_reqs (nreqs);
		1073
		1074	void
		1075	max_poll_time (double nseconds)
		1076	PROTOTYPE: $
		1077	CODE:
		1078	eio_set_max_poll_time (nseconds);
		1079
		1080	void
		1081	min_parallel (unsigned int nthreads)
		1082	PROTOTYPE: $
		1083	CODE:
		1084	eio_set_min_parallel (nthreads);
		1085
		1086	void
		1087	max_parallel (unsigned int nthreads)
		1088	PROTOTYPE: $
		1089	CODE:
		1090	eio_set_max_parallel (nthreads);
		1091
		1092	void
		1093	max_idle (unsigned int nthreads)
		1094	PROTOTYPE: $
		1095	CODE:
		1096	eio_set_max_idle (nthreads);
		1097
		1098	void
		1099	idle_timeout (unsigned int seconds)
		1100	PROTOTYPE: $
		1101	CODE:
		1102	eio_set_idle_timeout (seconds);
		1103
		1104	void
		1105	max_outstanding (unsigned int maxreqs)
		1106	PROTOTYPE: $
		1107	CODE:
1144	max_outstanding = maxreqs;	1108	max_outstanding = maxreqs;
1145	OUTPUT:
1146	RETVAL
1147		1109
1148	void	1110	void
1149	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1111	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1150	SV * pathname
1151	int flags
1152	int mode
1153	SV * callback
1154	PROTOTYPE: $$$;$
1155	PPCODE:	1112	PPCODE:
1156	{	1113	{
1157	dREQ;	1114	dREQ;
1158		1115
1159	req->type = REQ_OPEN;	1116	req->type = EIO_WD_OPEN;
1160	req->data = newSVsv (pathname);	1117	req_set_path1 (req, pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);
1162	req->fd = flags;
1163	req->mode = mode;
1164		1118
1165	REQ_SEND;	1119	REQ_SEND;
1166	}	1120	}
1167		1121
1168	void	1122	void
		1123	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1124	PPCODE:
		1125	{
		1126	dREQ;
		1127
		1128	req->type = EIO_OPEN;
		1129	req_set_path1 (req, pathname);
		1130	req->int1 = flags;
		1131	req->int2 = mode;
		1132
		1133	REQ_SEND;
		1134	}
		1135
		1136	void
1169	aio_close (fh,callback=&PL_sv_undef)	1137	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1170	SV * fh
1171	SV * callback
1172	PROTOTYPE: $;$
1173	ALIAS:	1138	ALIAS:
1174	aio_close = REQ_CLOSE
1175	aio_fsync = REQ_FSYNC	1139	aio_fsync = EIO_FSYNC
1176	aio_fdatasync = REQ_FDATASYNC	1140	aio_fdatasync = EIO_FDATASYNC
		1141	aio_syncfs = EIO_SYNCFS
1177	PPCODE:	1142	PPCODE:
1178	{	1143	{
		1144	int fd = s_fileno_croak (fh, 0);
1179	dREQ;	1145	dREQ;
1180		1146
1181	req->type = ix;	1147	req->type = ix;
1182	req->fh = newSVsv (fh);	1148	req->sv1 = newSVsv (fh);
1183	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1149	req->int1 = fd;
1184		1150
1185	REQ_SEND (req);	1151	REQ_SEND;
1186	}	1152	}
1187		1153
1188	void	1154	void
		1155	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1156	PPCODE:
		1157	{
		1158	int fd = s_fileno_croak (fh, 0);
		1159	dREQ;
		1160
		1161	req->type = EIO_SYNC_FILE_RANGE;
		1162	req->sv1 = newSVsv (fh);
		1163	req->int1 = fd;
		1164	req->offs = offset;
		1165	req->size = nbytes;
		1166	req->int2 = flags;
		1167
		1168	REQ_SEND;
		1169	}
		1170
		1171	void
		1172	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1173	PPCODE:
		1174	{
		1175	int fd = s_fileno_croak (fh, 0);
		1176	dREQ;
		1177
		1178	req->type = EIO_FALLOCATE;
		1179	req->sv1 = newSVsv (fh);
		1180	req->int1 = fd;
		1181	req->int2 = mode;
		1182	req->offs = offset;
		1183	req->size = len;
		1184
		1185	REQ_SEND;
		1186	}
		1187
		1188	void
		1189	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1190	PPCODE:
		1191	{
		1192	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1193	int fd = s_fileno_croak (fh, 0);
		1194	dREQ;
		1195
		1196	if (expect_false (close_fd < 0))
		1197	{
		1198	int pipefd [2];
		1199
		1200	if (
		1201	#ifdef _WIN32
		1202	_pipe (pipefd, 1, _O_BINARY) < 0
		1203	#else
		1204	pipe (pipefd) < 0
		1205	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1206	#endif
		1207	|| close (pipefd [1]) < 0
		1208	)
		1209	abort (); /*D*/
		1210
		1211	close_fd = pipefd [0];
		1212	}
		1213
		1214	req->type = EIO_DUP2;
		1215	req->int1 = close_fd;
		1216	req->sv2 = newSVsv (fh);
		1217	req->int2 = fd;
		1218
		1219	REQ_SEND;
		1220	}
		1221
		1222	void
		1223	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1224	PPCODE:
		1225	{
		1226	int fd = s_fileno_croak (fh, 0);
		1227	dREQ;
		1228
		1229	req->type = EIO_SEEK;
		1230	req->sv1 = newSVsv (fh);
		1231	req->int1 = fd;
		1232	req->offs = SvVAL64 (offset);
		1233	req->int2 = whence;
		1234
		1235	REQ_SEND;
		1236	}
		1237
		1238	void
1189	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1239	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1190	SV * fh
1191	UV offset
1192	UV length
1193	SV * data
1194	UV dataoffset
1195	SV * callback
1196	ALIAS:	1240	ALIAS:
1197	aio_read = REQ_READ	1241	aio_read = EIO_READ
1198	aio_write = REQ_WRITE	1242	aio_write = EIO_WRITE
1199	PROTOTYPE: $$$$$;$
1200	PPCODE:	1243	PPCODE:
1201	{	1244	{
1202	aio_req req;
1203	STRLEN svlen;	1245	STRLEN svlen;
		1246	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1204	char *svptr = SvPVbyte (data, svlen);	1247	char *svptr = SvPVbyte (data, svlen);
1205		1248	UV len = SvUV (length);
1206	SvUPGRADE (data, SVt_PV);
1207	SvPOK_on (data);
1208		1249
1209	if (dataoffset < 0)	1250	if (dataoffset < 0)
1210	dataoffset += svlen;	1251	dataoffset += svlen;
1211		1252
1212	if (dataoffset < 0 || dataoffset > svlen)	1253	if (dataoffset < 0 || dataoffset > svlen)
1213	croak ("data offset outside of string");	1254	croak ("dataoffset outside of data scalar");
1214		1255
1215	if (ix == REQ_WRITE)	1256	if (ix == EIO_WRITE)
1216	{	1257	{
1217	/* write: check length and adjust. */	1258	/* write: check length and adjust. */
1218	if (length < 0 || length + dataoffset > svlen)	1259	if (!SvOK (length) || len + dataoffset > svlen)
1219	length = svlen - dataoffset;	1260	len = svlen - dataoffset;
1220	}	1261	}
1221	else	1262	else
1222	{	1263	{
1223	/* read: grow scalar as necessary */	1264	/* read: check type and grow scalar as necessary */
		1265	SvUPGRADE (data, SVt_PV);
		1266	if (SvLEN (data) >= SvCUR (data))
1224	svptr = SvGROW (data, length + dataoffset);	1267	svptr = SvGROW (data, len + dataoffset + 1);
		1268	else if (SvCUR (data) < len + dataoffset)
		1269	croak ("length + dataoffset outside of scalar, and cannot grow");
1225	}	1270	}
1226
1227	if (length < 0)
1228	croak ("length must not be negative");
1229		1271
1230	{	1272	{
1231	dREQ;	1273	dREQ;
1232		1274
1233	req->type = ix;	1275	req->type = ix;
1234	req->fh = newSVsv (fh);	1276	req->sv1 = newSVsv (fh);
1235	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1277	req->int1 = fd;
1236	: IoOFP (sv_2io (fh)));	1278	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1237	req->offset = offset;	1279	req->size = len;
1238	req->length = length;
1239	req->data = SvREFCNT_inc (data);	1280	req->sv2 = SvREFCNT_inc (data);
1240	req->dataptr = (char *)svptr + dataoffset;	1281	req->ptr2 = (char *)svptr + dataoffset;
		1282	req->stroffset = dataoffset;
1241		1283
1242	if (!SvREADONLY (data))	1284	if (!SvREADONLY (data))
1243	{	1285	{
1244	SvREADONLY_on (data);	1286	SvREADONLY_on (data);
1245	req->data2ptr = (void *)data;	1287	req->flags |= FLAG_SV2_RO_OFF;
1246	}	1288	}
1247		1289
1248	REQ_SEND;	1290	REQ_SEND;
1249	}	1291	}
1250	}	1292	}
1251		1293
1252	void	1294	void
1253	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1295	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1254	SV * out_fh	1296	ALIAS:
1255	SV * in_fh	1297	aio_readlink = EIO_READLINK
1256	UV in_offset	1298	aio_realpath = EIO_REALPATH
1257	UV length
1258	SV * callback
1259	PROTOTYPE: $$$$;$
1260	PPCODE:	1299	PPCODE:
1261	{	1300	{
		1301	dREQ;
		1302
		1303	req->type = ix;
		1304	req_set_path1 (req, pathname);
		1305
		1306	REQ_SEND;
		1307	}
		1308
		1309	void
		1310	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1311	PPCODE:
		1312	{
		1313	int ifd = s_fileno_croak (in_fh , 0);
		1314	int ofd = s_fileno_croak (out_fh, 1);
1262	dREQ;	1315	dREQ;
1263		1316
1264	req->type = REQ_SENDFILE;	1317	req->type = EIO_SENDFILE;
1265	req->fh = newSVsv (out_fh);	1318	req->sv1 = newSVsv (out_fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1319	req->int1 = ofd;
1267	req->fh2 = newSVsv (in_fh);	1320	req->sv2 = newSVsv (in_fh);
1268	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1321	req->int2 = ifd;
1269	req->offset = in_offset;	1322	req->offs = in_offset;
1270	req->length = length;	1323	req->size = length;
1271		1324
1272	REQ_SEND;	1325	REQ_SEND;
1273	}	1326	}
1274		1327
1275	void	1328	void
1276	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1329	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1277	SV * fh
1278	UV offset
1279	IV length
1280	SV * callback
1281	PROTOTYPE: $$$;$
1282	PPCODE:	1330	PPCODE:
1283	{	1331	{
		1332	int fd = s_fileno_croak (fh, 0);
1284	dREQ;	1333	dREQ;
1285		1334
1286	req->type = REQ_READAHEAD;	1335	req->type = EIO_READAHEAD;
1287	req->fh = newSVsv (fh);	1336	req->sv1 = newSVsv (fh);
1288	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1337	req->int1 = fd;
1289	req->offset = offset;	1338	req->offs = offset;
1290	req->length = length;	1339	req->size = length;
1291		1340
1292	REQ_SEND;	1341	REQ_SEND;
1293	}	1342	}
1294		1343
1295	void	1344	void
1296	aio_stat (fh_or_path,callback=&PL_sv_undef)	1345	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1297	SV * fh_or_path
1298	SV * callback
1299	ALIAS:	1346	ALIAS:
1300	aio_stat = REQ_STAT	1347	aio_stat = EIO_STAT
1301	aio_lstat = REQ_LSTAT	1348	aio_lstat = EIO_LSTAT
		1349	aio_statvfs = EIO_STATVFS
1302	PPCODE:	1350	PPCODE:
1303	{	1351	{
1304	dREQ;	1352	dREQ;
1305		1353
1306	New (0, req->statdata, 1, Stat_t);	1354	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1307	if (!req->statdata)
1308	{
1309	req_free (req);
1310	croak ("out of memory during aio_req->statdata allocation");
1311	}
1312
1313	if (SvPOK (fh_or_path))
1314	{
1315	req->type = ix;
1316	req->data = newSVsv (fh_or_path);
1317	req->dataptr = SvPVbyte_nolen (req->data);
1318	}
1319	else
1320	{
1321	req->type = REQ_FSTAT;
1322	req->fh = newSVsv (fh_or_path);
1323	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1324	}
1325		1355
1326	REQ_SEND;	1356	REQ_SEND;
1327	}	1357	}
1328		1358
		1359	UV
		1360	major (UV dev)
		1361	ALIAS:
		1362	minor = 1
		1363	CODE:
		1364	RETVAL = ix ? major (dev) : minor (dev);
		1365	OUTPUT:
		1366	RETVAL
		1367
		1368	UV
		1369	makedev (UV maj, UV min)
		1370	CODE:
		1371	RETVAL = makedev (maj, min);
		1372	OUTPUT:
		1373	RETVAL
		1374
1329	void	1375	void
		1376	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1377	PPCODE:
		1378	{
		1379	dREQ;
		1380
		1381	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1382	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1383	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1384
		1385	REQ_SEND;
		1386	}
		1387
		1388	void
		1389	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1390	PPCODE:
		1391	{
		1392	dREQ;
		1393
		1394	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1395	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1396
		1397	REQ_SEND;
		1398	}
		1399
		1400	void
		1401	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1402	PPCODE:
		1403	{
		1404	dREQ;
		1405
		1406	req->int2 = mode;
		1407	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1408
		1409	REQ_SEND;
		1410	}
		1411
		1412	void
		1413	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1414	PPCODE:
		1415	{
		1416	dREQ;
		1417
		1418	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1419	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1420	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1421
		1422	REQ_SEND;
		1423	}
		1424
		1425	void
		1426	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1427	PPCODE:
		1428	{
		1429	dREQ;
		1430
		1431	req->type = EIO_READDIR;
		1432	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1433
		1434	if (flags & EIO_READDIR_DENTS)
		1435	req->int1 |= EIO_READDIR_CUSTOM2;
		1436
		1437	req_set_path1 (req, pathname);
		1438
		1439	REQ_SEND;
		1440	}
		1441
		1442	void
		1443	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1444	PPCODE:
		1445	{
		1446	dREQ;
		1447
		1448	req->type = EIO_MKDIR;
		1449	req->int2 = mode;
		1450	req_set_path1 (req, pathname);
		1451
		1452	REQ_SEND;
		1453	}
		1454
		1455	void
1330	aio_unlink (pathname,callback=&PL_sv_undef)	1456	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1331	SV * pathname
1332	SV * callback
1333	ALIAS:	1457	ALIAS:
1334	aio_unlink = REQ_UNLINK	1458	aio_unlink = EIO_UNLINK
1335	aio_rmdir = REQ_RMDIR	1459	aio_rmdir = EIO_RMDIR
1336	aio_readdir = REQ_READDIR	1460	aio_readdir = EIO_READDIR
1337	PPCODE:	1461	PPCODE:
1338	{	1462	{
1339	dREQ;	1463	dREQ;
1340		1464
1341	req->type = ix;	1465	req->type = ix;
1342	req->data = newSVsv (pathname);	1466	req_set_path1 (req, pathname);
1343	req->dataptr = SvPVbyte_nolen (req->data);	1467
1344
1345	REQ_SEND;	1468	REQ_SEND;
1346	}	1469	}
1347		1470
1348	void	1471	void
1349	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1472	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1350	SV * oldpath
1351	SV * newpath
1352	SV * callback
1353	ALIAS:	1473	ALIAS:
1354	aio_link = REQ_LINK	1474	aio_link = EIO_LINK
1355	aio_symlink = REQ_SYMLINK	1475	aio_symlink = EIO_SYMLINK
1356	aio_rename = REQ_RENAME	1476	aio_rename = EIO_RENAME
1357	PPCODE:	1477	PPCODE:
1358	{	1478	{
		1479	eio_wd wd2 = 0;
1359	dREQ;	1480	dREQ;
1360		1481
1361	req->type = ix;	1482	req->type = ix;
1362	req->fh = newSVsv (oldpath);	1483	req_set_path1 (req, oldpath);
1363	req->data2ptr = SvPVbyte_nolen (req->fh);	1484	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1364	req->data = newSVsv (newpath);	1485	req->int3 = (long)wd2;
1365	req->dataptr = SvPVbyte_nolen (req->data);
1366		1486
1367	REQ_SEND;	1487	REQ_SEND;
1368	}	1488	}
1369		1489
1370	void	1490	void
1371	aio_busy (delay,callback=&PL_sv_undef)	1491	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1372	double delay
1373	SV * callback
1374	PPCODE:	1492	PPCODE:
1375	{	1493	{
1376	dREQ;	1494	dREQ;
1377		1495
1378	req->type = REQ_BUSY;	1496	req->type = EIO_MKNOD;
1379	req->fd = delay < 0. ? 0 : delay;	1497	req->int2 = (mode_t)mode;
1380	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1498	req->offs = dev;
1381		1499	req_set_path1 (req, pathname);
		1500
1382	REQ_SEND;	1501	REQ_SEND;
1383	}	1502	}
1384		1503
1385	void	1504	void
1386	aio_group (callback=&PL_sv_undef)	1505	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1387	SV * callback	1506	ALIAS:
1388	PROTOTYPE: ;$	1507	aio_mtouch = EIO_MTOUCH
		1508	aio_msync = EIO_MSYNC
1389	PPCODE:	1509	PPCODE:
1390	{	1510	{
		1511	STRLEN svlen;
		1512	char *svptr = SvPVbyte (data, svlen);
		1513	UV len = SvUV (length);
		1514
		1515	if (offset < 0)
		1516	offset += svlen;
		1517
		1518	if (offset < 0 || offset > svlen)
		1519	croak ("offset outside of scalar");
		1520
		1521	if (!SvOK (length) || len + offset > svlen)
		1522	len = svlen - offset;
		1523
		1524	{
		1525	dREQ;
		1526
		1527	req->type = ix;
		1528	req->sv2 = SvREFCNT_inc (data);
		1529	req->ptr2 = (char *)svptr + offset;
		1530	req->size = len;
		1531	req->int1 = flags;
		1532
		1533	REQ_SEND;
		1534	}
		1535	}
		1536
		1537	void
		1538	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1539	PPCODE:
		1540	{
		1541	STRLEN svlen;
		1542	char *svptr = SvPVbyte (data, svlen);
		1543	UV len = SvUV (length);
		1544
		1545	if (offset < 0)
		1546	offset += svlen;
		1547
		1548	if (offset < 0 || offset > svlen)
		1549	croak ("offset outside of scalar");
		1550
		1551	if (!SvOK (length) || len + offset > svlen)
		1552	len = svlen - offset;
		1553
		1554	{
		1555	dREQ;
		1556
		1557	req->type = EIO_MLOCK;
		1558	req->sv2 = SvREFCNT_inc (data);
		1559	req->ptr2 = (char *)svptr + offset;
		1560	req->size = len;
		1561
		1562	REQ_SEND;
		1563	}
		1564	}
		1565
		1566	void
		1567	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1568	PPCODE:
		1569	{
		1570	dREQ;
		1571
		1572	req->type = EIO_MLOCKALL;
		1573	req->int1 = flags;
		1574
		1575	REQ_SEND;
		1576	}
		1577
		1578	void
		1579	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1580	PPCODE:
		1581	{
		1582	int fd = s_fileno_croak (fh, 0);
1391	dREQ;	1583	dREQ;
1392		1584
1393	req->type = REQ_GROUP;	1585	req->type = EIO_CUSTOM;
1394	req_send (req);	1586	req->sv1 = newSVsv (fh);
		1587	req->int1 = fd;
1395		1588
1396	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1589	req->feed = fiemap;
1397	}	1590	#if HAVE_FIEMAP
		1591	/* keep our fingers crossed that the next two types are 64 bit */
		1592	req->offs = start;
		1593	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1594	req->int2 = flags;
		1595	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1596	#endif
1398		1597
		1598	REQ_SEND;
		1599	}
		1600
1399	void	1601	void
1400	aio_nop (callback=&PL_sv_undef)	1602	aio_busy (double delay, SV *callback=&PL_sv_undef)
1401	SV * callback
1402	PPCODE:	1603	PPCODE:
1403	{	1604	{
1404	dREQ;	1605	dREQ;
1405		1606
		1607	req->type = EIO_BUSY;
		1608	req->nv1 = delay < 0. ? 0. : delay;
		1609
		1610	REQ_SEND;
		1611	}
		1612
		1613	void
		1614	aio_group (SV *callback=&PL_sv_undef)
		1615	PPCODE:
		1616	{
		1617	dREQ;
		1618
1406	req->type = REQ_NOP;	1619	req->type = EIO_GROUP;
		1620
		1621	req_submit (req);
		1622	XPUSHs (req_sv (req, aio_grp_stash));
		1623	}
		1624
		1625	void
		1626	aio_nop (SV *callback=&PL_sv_undef)
		1627	ALIAS:
		1628	aio_nop = EIO_NOP
		1629	aio_sync = EIO_SYNC
		1630	PPCODE:
		1631	{
		1632	dREQ;
		1633
		1634	req->type = ix;
1407		1635
1408	REQ_SEND;	1636	REQ_SEND;
1409	}	1637	}
1410		1638
1411	int	1639	int
1412	aioreq_pri (int pri = 0)	1640	aioreq_pri (int pri = 0)
1413	PROTOTYPE: ;$
1414	CODE:	1641	CODE:
1415	RETVAL = next_pri - PRI_BIAS;	1642	RETVAL = next_pri;
1416	if (items > 0)	1643	if (items > 0)
1417	{	1644	{
1418	if (pri < PRI_MIN) pri = PRI_MIN;	1645	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1419	if (pri > PRI_MAX) pri = PRI_MAX;	1646	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1420	next_pri = pri + PRI_BIAS;	1647	next_pri = pri;
1421	}	1648	}
1422	OUTPUT:	1649	OUTPUT:
1423	RETVAL	1650	RETVAL
1424		1651
1425	void	1652	void
1426	aioreq_nice (int nice = 0)	1653	aioreq_nice (int nice = 0)
1427	CODE:	1654	CODE:
1428	nice = next_pri - nice;	1655	nice = next_pri - nice;
1429	if (nice < PRI_MIN) nice = PRI_MIN;	1656	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1430	if (nice > PRI_MAX) nice = PRI_MAX;	1657	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1431	next_pri = nice + PRI_BIAS;	1658	next_pri = nice;
1432		1659
1433	void	1660	void
1434	flush ()	1661	flush ()
		1662	CODE:
		1663	while (eio_nreqs ())
		1664	{
		1665	poll_wait ();
		1666	poll_cb ();
		1667	}
		1668
		1669	int
		1670	poll ()
		1671	CODE:
		1672	poll_wait ();
		1673	RETVAL = poll_cb ();
		1674	OUTPUT:
		1675	RETVAL
		1676
		1677	int
		1678	poll_fileno ()
		1679	CODE:
		1680	RETVAL = s_epipe_fd (&respipe);
		1681	OUTPUT:
		1682	RETVAL
		1683
		1684	int
		1685	poll_cb (...)
1435	PROTOTYPE:	1686	PROTOTYPE:
1436	CODE:	1687	CODE:
1437	while (nreqs)
1438	{
1439	poll_wait ();
1440	poll_cb (0);	1688	RETVAL = poll_cb ();
1441	}
1442
1443	void
1444	poll()
1445	PROTOTYPE:
1446	CODE:
1447	if (nreqs)
1448	{
1449	poll_wait ();
1450	poll_cb (0);
1451	}
1452
1453	int
1454	poll_fileno()
1455	PROTOTYPE:
1456	CODE:
1457	RETVAL = respipe [0];
1458	OUTPUT:	1689	OUTPUT:
1459	RETVAL	1690	RETVAL
1460		1691
		1692	void
		1693	poll_wait ()
		1694	CODE:
		1695	poll_wait ();
		1696
1461	int	1697	int
1462	poll_cb(...)	1698	nreqs ()
1463	PROTOTYPE:
1464	CODE:	1699	CODE:
1465	RETVAL = poll_cb (0);	1700	RETVAL = eio_nreqs ();
1466	OUTPUT:	1701	OUTPUT:
1467	RETVAL	1702	RETVAL
1468		1703
1469	int	1704	int
1470	poll_some(int max = 0)	1705	nready ()
1471	PROTOTYPE: $
1472	CODE:	1706	CODE:
1473	RETVAL = poll_cb (max);	1707	RETVAL = eio_nready ();
1474	OUTPUT:	1708	OUTPUT:
1475	RETVAL	1709	RETVAL
1476		1710
1477	void	1711	int
1478	poll_wait()	1712	npending ()
1479	PROTOTYPE:
1480	CODE:	1713	CODE:
1481	if (nreqs)	1714	RETVAL = eio_npending ();
1482	poll_wait ();
1483
1484	int
1485	nreqs()
1486	PROTOTYPE:
1487	CODE:
1488	RETVAL = nreqs;
1489	OUTPUT:	1715	OUTPUT:
1490	RETVAL	1716	RETVAL
1491		1717
1492	int	1718	int
1493	nready()	1719	nthreads ()
1494	PROTOTYPE:
1495	CODE:	1720	CODE:
1496	if (WORDREAD_UNSAFE) LOCK (reqlock);
1497	RETVAL = nready;	1721	RETVAL = eio_nthreads ();
1498	if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499	OUTPUT:	1722	OUTPUT:
1500	RETVAL	1723	RETVAL
1501		1724
1502	int	1725	int
1503	npending()	1726	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1504	PROTOTYPE:	1727	CODE:
		1728	RETVAL = posix_fadvise (fh, offset, length, advice);
		1729	OUTPUT:
		1730	RETVAL
		1731
		1732	IV
		1733	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1734	CODE:
		1735	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1736	OUTPUT:
		1737	RETVAL
		1738
		1739	void
		1740	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1741	PPCODE:
		1742	sv_unmagic (scalar, MMAP_MAGIC);
		1743	{
		1744	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1745	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1746	if (addr == (void *)-1)
		1747	XSRETURN_NO;
		1748
		1749	sv_force_normal (scalar);
		1750
		1751	/* we store the length in mg_obj, as namlen is I32 :/ */
		1752	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1753	->mg_obj = (SV *)length;
		1754
		1755	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1756
		1757	if (!(prot & PROT_WRITE))
		1758	SvREADONLY_on (scalar);
		1759
		1760	if (SvLEN (scalar))
		1761	Safefree (SvPVX (scalar));
		1762
		1763	SvPVX (scalar) = (char *)addr;
		1764	SvCUR_set (scalar, length);
		1765	SvLEN_set (scalar, 0);
		1766	SvPOK_only (scalar);
		1767
		1768	XSRETURN_YES;
		1769	}
		1770
		1771	void
		1772	munmap (SV *scalar)
1505	CODE:	1773	CODE:
1506	if (WORDREAD_UNSAFE) LOCK (reslock);	1774	sv_unmagic (scalar, MMAP_MAGIC);
1507	RETVAL = npending;	1775
1508	if (WORDREAD_UNSAFE) UNLOCK (reslock);	1776	int
		1777	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1778	ALIAS:
		1779	mprotect = 1
		1780	CODE:
		1781	{
		1782	STRLEN svlen;
		1783	void *addr = SvPVbyte (scalar, svlen);
		1784	size_t len = SvUV (length);
		1785
		1786	if (offset < 0)
		1787	offset += svlen;
		1788
		1789	if (offset < 0 || offset > svlen)
		1790	croak ("offset outside of scalar");
		1791
		1792	if (!SvOK (length) || len + offset > svlen)
		1793	len = svlen - offset;
		1794
		1795	addr = (void *)(((intptr_t)addr) + offset);
		1796	eio_page_align (&addr, &len);
		1797
		1798	switch (ix)
		1799	{
		1800	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1801	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1802	}
		1803	}
1509	OUTPUT:	1804	OUTPUT:
1510	RETVAL	1805	RETVAL
		1806
		1807	int
		1808	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1809	CODE:
		1810	{
		1811	STRLEN svlen;
		1812	void *addr = SvPVbyte (scalar, svlen);
		1813	size_t len = SvUV (length);
		1814
		1815	if (offset < 0)
		1816	offset += svlen;
		1817
		1818	if (offset < 0 || offset > svlen)
		1819	croak ("offset outside of scalar");
		1820
		1821	if (!SvOK (length) || len + offset > svlen)
		1822	len = svlen - offset;
		1823
		1824	addr = (void *)(((intptr_t)addr) + offset);
		1825	eio_page_align (&addr, &len);
		1826	#if _POSIX_MEMLOCK_RANGE
		1827	RETVAL = munlock (addr, len);
		1828	#else
		1829	RETVAL = EIO_ENOSYS ();
		1830	#endif
		1831	}
		1832	OUTPUT:
		1833	RETVAL
		1834
		1835	int
		1836	munlockall ()
		1837	CODE:
		1838	#if _POSIX_MEMLOCK
		1839	munlockall ();
		1840	#else
		1841	RETVAL = EIO_ENOSYS ();
		1842	#endif
		1843	OUTPUT:
		1844	RETVAL
		1845
		1846	int
		1847	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1848	CODE:
		1849	{
		1850	#if HAVE_LINUX_SPLICE
		1851	loff_t off_in_, off_out_;
		1852	RETVAL = splice (
		1853	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1854	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1855	length, flags
		1856	);
		1857	#else
		1858	RETVAL = EIO_ENOSYS ();
		1859	#endif
		1860	}
		1861	OUTPUT:
		1862	RETVAL
		1863
		1864	int
		1865	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1866	CODE:
		1867	#if HAVE_LINUX_SPLICE
		1868	RETVAL = tee (rfh, wfh, length, flags);
		1869	#else
		1870	RETVAL = EIO_ENOSYS ();
		1871	#endif
		1872	OUTPUT:
		1873	RETVAL
		1874
		1875	void _on_next_submit (SV *cb)
		1876	CODE:
		1877	SvREFCNT_dec (on_next_submit);
		1878	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1511		1879
1512	PROTOTYPES: DISABLE	1880	PROTOTYPES: DISABLE
		1881
		1882	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1883
		1884	BOOT:
		1885	{
		1886	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1887	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1888	}
		1889
		1890	void
		1891	DESTROY (SV *self)
		1892	CODE:
		1893	{
		1894	aio_wd wd = SvAIO_WD (self);
		1895	#if HAVE_AT
		1896	{
		1897	SV *callback = &PL_sv_undef;
		1898	dREQ; /* clobbers next_pri :/ */
		1899	next_pri = req->pri; /* restore next_pri */
		1900	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1901	req->type = EIO_WD_CLOSE;
		1902	req->wd = wd;
		1903	REQ_SEND;
		1904	}
		1905	#else
		1906	eio_wd_close_sync (wd);
		1907	#endif
		1908	}
1513		1909
1514	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1910	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1515		1911
1516	void	1912	void
1517	cancel (aio_req_ornot req)	1913	cancel (aio_req_ornot req)
1518	CODE:	1914	CODE:
1519	req_cancel (req);	1915	eio_cancel (req);
1520		1916
1521	void	1917	void
1522	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1918	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1523	CODE:	1919	PPCODE:
		1920	{
		1921	if (GIMME_V != G_VOID)
		1922	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1923
		1924	if (items > 1)
		1925	{
		1926	SV *cb_cv =get_cb (callback);
		1927
1524	SvREFCNT_dec (req->callback);	1928	SvREFCNT_dec (req->callback);
1525	req->callback = newSVsv (callback);	1929	req->callback = SvREFCNT_inc (cb_cv);
		1930	}
		1931	}
1526		1932
1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1933	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1528		1934
1529	void	1935	void
1530	add (aio_req grp, ...)	1936	add (aio_req grp, ...)
1531	PPCODE:	1937	PPCODE:
1532	{	1938	{
1533	int i;	1939	int i;
1534	aio_req req;
1535		1940
1536	if (grp->fd == 2)	1941	if (grp->int1 == 2)
1537	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1942	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538		1943
1539	for (i = 1; i < items; ++i )	1944	for (i = 1; i < items; ++i )
1540	{	1945	{
		1946	aio_req req;
		1947
1541	if (GIMME_V != G_VOID)	1948	if (GIMME_V != G_VOID)
1542	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1949	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1543		1950
1544	req = SvAIO_REQ (ST (i));	1951	req = SvAIO_REQ (ST (i));
1545		1952
1546	if (req)	1953	if (req)
1547	{	1954	eio_grp_add (grp, req);
1548	++grp->length;
1549	req->grp = grp;
1550
1551	req->grp_prev = 0;
1552	req->grp_next = grp->grp_first;
1553
1554	if (grp->grp_first)
1555	grp->grp_first->grp_prev = req;
1556
1557	grp->grp_first = req;
1558	}
1559	}	1955	}
1560	}	1956	}
1561		1957
1562	void	1958	void
1563	cancel_subs (aio_req_ornot req)	1959	cancel_subs (aio_req_ornot req)
…		…
1572	AV *av;	1968	AV *av;
1573		1969
1574	grp->errorno = errno;	1970	grp->errorno = errno;
1575		1971
1576	av = newAV ();	1972	av = newAV ();
		1973	av_extend (av, items - 1);
1577		1974
1578	for (i = 1; i < items; ++i )	1975	for (i = 1; i < items; ++i )
1579	av_push (av, newSVsv (ST (i)));	1976	av_push (av, newSVsv (ST (i)));
1580		1977
1581	SvREFCNT_dec (grp->data);	1978	SvREFCNT_dec (grp->sv1);
1582	grp->data = (SV *)av;	1979	grp->sv1 = (SV *)av;
1583	}	1980	}
1584		1981
1585	void	1982	void
1586	errno (aio_req grp, int errorno = errno)	1983	errno (aio_req grp, int errorno = errno)
1587	CODE:	1984	CODE:
1588	grp->errorno = errorno;	1985	grp->errorno = errorno;
1589		1986
1590	void	1987	void
1591	limit (aio_req grp, int limit)	1988	limit (aio_req grp, int limit)
1592	CODE:	1989	CODE:
1593	grp->fd2 = limit;	1990	eio_grp_limit (grp, limit);
1594	aio_grp_feed (grp);
1595		1991
1596	void	1992	void
1597	feed (aio_req grp, SV *callback=&PL_sv_undef)	1993	feed (aio_req grp, SV *callback=&PL_sv_undef)
1598	CODE:	1994	CODE:
1599	{	1995	{
1600	SvREFCNT_dec (grp->fh2);	1996	SvREFCNT_dec (grp->sv2);
1601	grp->fh2 = newSVsv (callback);	1997	grp->sv2 = newSVsv (callback);
		1998	grp->feed = aio_grp_feed;
1602		1999
1603	if (grp->fd2 <= 0)	2000	if (grp->int2 <= 0)
1604	grp->fd2 = 2;	2001	grp->int2 = 2;
1605		2002
1606	aio_grp_feed (grp);	2003	eio_grp_limit (grp, grp->int2);
1607	}	2004	}
1608		2005

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