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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.77 by root, Thu Oct 26 13:25:40 2006 UTC vs.
Revision 1.224 by root, Thu Oct 11 03:20:52 2012 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	150	#endif
57		151	#ifndef major
58	#if __ia64	152	# define major(dev) ((dev) >> 8)
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	153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
65		157
66	/* buffer size for various temporary buffers */	158	#ifndef PAGESIZE
67	#define AIO_BUFSIZE 65536	159	# define PAGESIZE sysconf (_SC_PAGESIZE)
		160	#endif
68		161
69	#define dBUF \	162	/*****************************************************************************/
70	char *aio_buf; \	163
71	LOCK (wrklock); \	164	static void
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	165	fiemap (eio_req *req)
73	UNLOCK (wrklock); \	166	{
74	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)
75	return -1;	185	return;
76		186
77	enum {	187	req->ptr1 = fiemap;
78	REQ_QUIT,
79	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
81	REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85	REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,
87	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,
89	};
90		188
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	189	fiemap->fm_start = req->offs;
92	#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;
93		193
94	typedef struct aio_cb	194	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
95	{	195	return;
96	struct aio_cb *volatile next;
97		196
98	SV *data, *callback;	197	if (req->int3 >= 0 /* not autosizing */
99	SV *fh, *fh2;	198	|| !fiemap->fm_mapped_extents /* no more extents */
100	void *dataptr, *data2ptr;	199	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
101	Stat_t *statdata;	200	goto done;
102	off_t offset;
103	size_t length;
104	ssize_t result;
105		201
106	STRLEN dataoffset;	202	/* else we have to loop -
107	int type;	203	* it would be tempting (atcually I tried that first) to just query the
108	int fd, fd2;	204	* number of extents needed, but linux often feels like not returning all
109	int errorno;	205	* extents, without telling us it left any out. this complicates
110	mode_t mode; /* open */	206	* this quite a bit.
		207	*/
111		208
112	unsigned char flags;	209	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
113	unsigned char pri;
114		210
115	SV *self; /* the perl counterpart of this request, if any */	211	for (;;)
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
117	} aio_cb;
118
119	enum {
120	FLAG_CANCELLED = 0x01,
121	};
122
123	typedef aio_cb *aio_req;
124	typedef aio_cb *aio_req_ornot;
125
126	enum {
127	PRI_MIN = -4,
128	PRI_MAX = 4,
129
130	DEFAULT_PRI = 0,
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
136
137	static int started, wanted;
138	static volatile int nreqs;
139	static int respipe [2];
140
141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143	#else
144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
145	#endif
146
147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
149
150	/* worker threads management */
151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
152
153	typedef struct worker {
154	/* locked by wrklock */
155	struct worker *prev, *next;
156
157	pthread_t tid;
158
159	/* locked by reslock, reqlock or wrklock */
160	aio_req req; /* currently processed request */
161	void *dbuf;
162	DIR *dirp;
163	} worker;
164
165	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
166
167	static void worker_clear (worker *wrk)
168	{
169	if (wrk->dirp)
170	{	212	{
171	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) */
172	wrk->dirp = 0;	214	char scratch[3072];
173	}	215	struct fiemap *incmap = (struct fiemap *)scratch;
174		216
175	if (wrk->dbuf)	217	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
176	{	218	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
177	free (wrk->dbuf);	219	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
178	wrk->dbuf = 0;	220	incmap->fm_flags = fiemap->fm_flags;
179	}	221	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
180	}
181		222
182	static void worker_free (worker *wrk)	223	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
183	{
184	wrk->next->prev = wrk->prev;
185	wrk->prev->next = wrk->next;
186
187	free (wrk);
188	}
189
190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
192	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
193
194	/*
195	* a somewhat faster data structure might be nice, but
196	* with 8 priorities this actually needs <20 insns
197	* per shift, the most expensive operation.
198	*/
199	typedef struct {
200	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
201	int size;
202	} reqq;
203
204	static reqq req_queue;
205	static reqq res_queue;
206
207	int reqq_push (reqq *q, aio_req req)
208	{
209	int pri = req->pri;
210	req->next = 0;
211
212	if (q->qe[pri])
213	{
214	q->qe[pri]->next = req;
215	q->qe[pri] = req;
216	}
217	else
218	q->qe[pri] = q->qs[pri] = req;
219
220	return q->size++;
221	}
222
223	aio_req reqq_shift (reqq *q)
224	{
225	int pri;
226
227	if (!q->size)
228	return 0;	224	return;
229		225
230	--q->size;	226	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
231		227	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
232	for (pri = NUM_PRI; pri--; )	228	errno = ENOMEM;
233	{
234	aio_req req = q->qs[pri];
235
236	if (req)	229	if (!fiemap)
		230	return;
		231
		232	req->ptr1 = fiemap;
		233
		234	for (count = 0; count < incmap->fm_mapped_extents; ++count)
237	{	235	{
238	if (!(q->qs[pri] = req->next))	236	struct fiemap_extent *e = incmap->fm_extents + count;
239	q->qe[pri] = 0;
240		237
241	return req;	238	if (e->fe_logical + e->fe_length >= end_offset)
		239	goto done;
		240
		241	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		242
		243	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		244	goto done;
		245
242	}	246	}
243	}	247	}
244		248
245	abort ();	249	done:
246	}	250	req->result = 0;
247		251
248	static int poll_cb (int max);	252	#else
249	static void req_invoke (aio_req req);	253	errno = ENOSYS;
		254	#endif
		255	}
		256
		257	/*****************************************************************************/
		258
		259	enum {
		260	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		261	};
		262
		263	typedef eio_req *aio_req;
		264	typedef eio_req *aio_req_ornot;
		265	typedef eio_wd aio_wd;
		266
		267	static SV *on_next_submit;
		268	static int next_pri = EIO_PRI_DEFAULT;
		269	static int max_outstanding;
		270
		271	static s_epipe respipe;
		272
250	static void req_free (aio_req req);	273	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	274	static void req_cancel (aio_req req);
252		275
		276	static void
		277	want_poll (void)
		278	{
		279	/* write a dummy byte to the pipe so fh becomes ready */
		280	s_epipe_signal (&respipe);
		281	}
		282
		283	static void
		284	done_poll (void)
		285	{
		286	/* read any signals sent by the worker threads */
		287	s_epipe_drain (&respipe);
		288	}
		289
253	/* must be called at most once */	290	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	291	static SV *
		292	req_sv (aio_req req, HV *stash)
255	{	293	{
256	if (!req->self)	294	if (!req->self)
257	{	295	{
258	req->self = (SV *)newHV ();	296	req->self = (SV *)newHV ();
259	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	297	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
260	}	298	}
261		299
262	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	300	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
263	}	301	}
264		302
265	static aio_req SvAIO_REQ (SV *sv)	303	static SV *
		304	newSVaio_wd (aio_wd wd)
		305	{
		306	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		307	}
		308
		309	static aio_req
		310	SvAIO_REQ (SV *sv)
266	{	311	{
267	MAGIC *mg;	312	MAGIC *mg;
268		313
269	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	314	if (!SvROK (sv)
		315	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		316	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		317	&& SvSTASH (SvRV (sv)) != aio_req_stash
		318	&& !sv_derived_from (sv, "IO::AIO::REQ")))
270	croak ("object of class " AIO_REQ_KLASS " expected");	319	croak ("object of class IO::AIO::REQ expected");
271		320
272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	321	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
273		322
274	return mg ? (aio_req)mg->mg_ptr : 0;	323	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	324	}
276		325
		326	static aio_wd
		327	SvAIO_WD (SV *sv)
		328	{
		329	if (!SvROK (sv)
		330	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		331	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		332	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		333
		334	return (aio_wd)(long)SvIVX (SvRV (sv));
		335	}
		336
		337	static void
277	static void aio_grp_feed (aio_req grp)	338	aio_grp_feed (aio_req grp)
278	{	339	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	340	if (grp->sv2 && SvOK (grp->sv2))
280	{	341	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	342	dSP;
286		343
287	ENTER;	344	ENTER;
288	SAVETMPS;	345	SAVETMPS;
289	PUSHMARK (SP);	346	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	347	XPUSHs (req_sv (grp, aio_grp_stash));
291	PUTBACK;	348	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	349	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	350	SPAGAIN;
294	FREETMPS;	351	FREETMPS;
295	LEAVE;	352	LEAVE;
296	}
297
298	/* stop if no progress has been made */
299	if (old_len == grp->length)
300	{
301	SvREFCNT_dec (grp->fh2);
302	grp->fh2 = 0;
303	break;
304	}
305	}	353	}
306	}	354	}
307		355
308	static void aio_grp_dec (aio_req grp)	356	static void
		357	req_submit (eio_req *req)
309	{	358	{
310	--grp->length;	359	eio_submit (req);
311		360
312	/* call feeder, if applicable */	361	if (expect_false (on_next_submit))
313	aio_grp_feed (grp);
314
315	/* finish, if done */
316	if (!grp->length && grp->fd)
317	{	362	{
318	req_invoke (grp);	363	dSP;
319	req_free (grp);	364	SV *cb = sv_2mortal (on_next_submit);
		365
		366	on_next_submit = 0;
		367
		368	PUSHMARK (SP);
		369	PUTBACK;
		370	call_sv (cb, G_DISCARD | G_EVAL);
320	}	371	}
321	}	372	}
322		373
323	static void poll_wait ()	374	static int
		375	req_invoke (eio_req *req)
324	{	376	{
325	fd_set rfd;	377	if (req->flags & FLAG_SV2_RO_OFF)
		378	SvREADONLY_off (req->sv2);
326		379
327	while (nreqs)	380	if (!EIO_CANCELLED (req) && req->callback)
328	{	381	{
329	int size;
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331	LOCK (reslock);
332	#endif
333	size = res_queue.size;
334	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335	UNLOCK (reslock);
336	#endif
337
338	if (size)
339	return;
340
341	FD_ZERO(&rfd);
342	FD_SET(respipe [0], &rfd);
343
344	select (respipe [0] + 1, &rfd, 0, 0, 0);
345	}
346	}
347
348	static void req_invoke (aio_req req)
349	{
350	dSP;	382	dSP;
351		383	static SV *sv_result_cache; /* caches the result integer SV */
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	384	SV *sv_result;
353	{
354	errno = req->errorno;
355		385
356	ENTER;	386	ENTER;
357	SAVETMPS;	387	SAVETMPS;
358	PUSHMARK (SP);	388	PUSHMARK (SP);
359	EXTEND (SP, 1);	389	EXTEND (SP, 1);
360		390
		391	/* do not recreate the result IV from scratch each time */
		392	if (expect_true (sv_result_cache))
		393	{
		394	sv_result = sv_result_cache; sv_result_cache = 0;
		395	SvIV_set (sv_result, req->result);
		396	SvIOK_only (sv_result);
		397	}
		398	else
		399	{
		400	sv_result = newSViv (req->result);
		401	SvREADONLY_on (sv_result);
		402	}
		403
361	switch (req->type)	404	switch (req->type)
362	{	405	{
		406	case EIO_WD_OPEN:
		407	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		408	break;
		409
363	case REQ_READDIR:	410	case EIO_READDIR:
364	{	411	{
365	SV *rv = &PL_sv_undef;	412	SV *rv = &PL_sv_undef;
366		413
367	if (req->result >= 0)	414	if (req->result >= 0)
368	{	415	{
369	int i;	416	int i;
370	char *buf = req->data2ptr;	417	char *names = (char *)req->ptr2;
		418	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371	AV *av = newAV ();	419	AV *av = newAV ();
372		420
373	av_extend (av, req->result - 1);	421	av_extend (av, req->result - 1);
374		422
375	for (i = 0; i < req->result; ++i)	423	for (i = 0; i < req->result; ++i)
376	{	424	{
377	SV *sv = newSVpv (buf, 0);	425	if (req->int1 & EIO_READDIR_DENTS)
		426	{
		427	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378		428
		429	if (req->int1 & EIO_READDIR_CUSTOM2)
		430	{
		431	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		432	AV *avent = newAV ();
		433
		434	av_extend (avent, 2);
		435
		436	if (!sv_type [ent->type])
		437	{
		438	sv_type [ent->type] = newSViv (ent->type);
		439	SvREADONLY_on (sv_type [ent->type]);
		440	}
		441
		442	av_store (avent, 0, namesv);
		443	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		444	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		445
		446	av_store (av, i, newRV_noinc ((SV *)avent));
		447	}
		448	else
379	av_store (av, i, sv);	449	av_store (av, i, namesv);
		450
		451	++ent;
		452	}
		453	else
		454	{
		455	SV *name = newSVpv (names, 0);
		456	av_store (av, i, name);
380	buf += SvCUR (sv) + 1;	457	names += SvCUR (name) + 1;
		458	}
381	}	459	}
382		460
383	rv = sv_2mortal (newRV_noinc ((SV *)av));	461	rv = sv_2mortal (newRV_noinc ((SV *)av));
384	}	462	}
385		463
386	PUSHs (rv);	464	PUSHs (rv);
		465
		466	if (req->int1 & EIO_READDIR_CUSTOM1)
		467	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
387	}	468	}
388	break;	469	break;
389		470
390	case REQ_OPEN:	471	case EIO_OPEN:
391	{	472	{
392	/* convert fd to fh */	473	/* convert fd to fh */
393	SV *fh;	474	SV *fh = &PL_sv_undef;
394		475
395	PUSHs (sv_2mortal (newSViv (req->result)));	476	if (req->result >= 0)
396	PUTBACK;	477	{
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	478	GV *gv = (GV *)sv_newmortal ();
398	SPAGAIN;	479	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		480	char sym [64];
		481	int symlen;
		482
		483	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		484	gv_init (gv, aio_stash, sym, symlen, 0);
399		485
400	fh = SvREFCNT_inc (POPs);	486	symlen = snprintf (
		487	sym,
		488	sizeof (sym),
		489	"%s&=%d",
		490	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		491	(int)req->result
		492	);
401		493
		494	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		495	fh = (SV *)gv;
		496	}
		497
402	PUSHMARK (SP);	498	PUSHs (fh);
403	XPUSHs (sv_2mortal (fh));
404	}	499	}
405	break;	500	break;
406		501
		502	case EIO_STATVFS:
		503	case EIO_FSTATVFS:
		504	{
		505	SV *rv = &PL_sv_undef;
		506
		507	#ifndef _WIN32
		508	if (req->result >= 0)
		509	{
		510	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		511	HV *hv = newHV ();
		512	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		513	* chooses to make it a struct.
		514	*/
		515	unsigned long fsid = 0;
		516	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		517
		518	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		519
		520	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		521	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		522	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		523	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		524	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		525	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		526	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		527	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		528	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		529	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		530	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		531	}
		532	#endif
		533
		534	PUSHs (rv);
		535	}
		536
		537	break;
		538
407	case REQ_GROUP:	539	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	540	req->int1 = 2; /* mark group as finished */
409		541
410	if (req->data)	542	if (req->sv1)
411	{	543	{
412	int i;	544	int i;
413	AV *av = (AV *)req->data;	545	AV *av = (AV *)req->sv1;
414		546
415	EXTEND (SP, AvFILL (av) + 1);	547	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	548	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	549	PUSHs (*av_fetch (av, i, 0));
418	}	550	}
419	break;	551	break;
420		552
421	case REQ_NOP:	553	case EIO_NOP:
422	case REQ_BUSY:	554	case EIO_BUSY:
423	break;	555	break;
424		556
		557	case EIO_READLINK:
		558	case EIO_REALPATH:
		559	if (req->result > 0)
		560	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		561	break;
		562
		563	case EIO_STAT:
		564	case EIO_LSTAT:
		565	case EIO_FSTAT:
		566	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		567
		568	if (!(PL_laststatval = req->result))
		569	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		570	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		571
		572	PUSHs (sv_result);
		573	break;
		574
		575	case EIO_SEEK:
		576	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		577	break;
		578
		579	case EIO_READ:
		580	{
		581	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		582	*SvEND (req->sv2) = 0;
		583	SvPOK_only (req->sv2);
		584	SvSETMAGIC (req->sv2);
		585	PUSHs (sv_result);
		586	}
		587	break;
		588
		589	case EIO_CUSTOM:
		590	if (req->feed == fiemap)
		591	{
		592	#if HAVE_FIEMAP
		593	if (!req->result)
		594	{
		595	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		596
		597	if (fiemap->fm_extent_count)
		598	{
		599	AV *av = newAV ();
		600	int i;
		601
		602	while (fiemap->fm_mapped_extents)
		603	{
		604	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		605	AV *ext_av = newAV ();
		606
		607	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		608	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		609	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		610	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		611
		612	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		613	}
		614
		615	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		616	}
		617	else
		618	{
		619	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		620	PUSHs (sv_result);
		621	}
		622	}
		623	#endif
		624	}
		625	else
		626	PUSHs (sv_result);
		627	break;
		628
		629	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		630	if (req->result > 0)
		631	SvIV_set (sv_result, 0);
		632	/* FALLTHROUGH */
		633
425	default:	634	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	635	PUSHs (sv_result);
427	break;	636	break;
428	}	637	}
429		638
		639	errno = req->errorno;
430		640
431	PUTBACK;	641	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	642	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	SPAGAIN;	643	SPAGAIN;
		644
		645	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		646	SvREFCNT_dec (sv_result);
		647	else
		648	sv_result_cache = sv_result;
434		649
435	FREETMPS;	650	FREETMPS;
436	LEAVE;	651	LEAVE;
		652
		653	PUTBACK;
437	}	654	}
438		655
439	if (req->grp)	656	return !!SvTRUE (ERRSV);
440	{
441	aio_req grp = req->grp;
442
443	/* unlink request */
444	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
445	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
446
447	if (grp->grp_first == req)
448	grp->grp_first = req->grp_next;
449
450	aio_grp_dec (grp);
451	}
452
453	if (SvTRUE (ERRSV))
454	{
455	req_free (req);
456	croak (0);
457	}
458	}	657	}
459		658
460	static void req_free (aio_req req)	659	static void
		660	req_destroy (aio_req req)
461	{	661	{
462	if (req->self)	662	if (req->self)
463	{	663	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	664	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	665	SvREFCNT_dec (req->self);
466	}	666	}
467		667
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	668	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	669	SvREFCNT_dec (req->sv2);
		670	SvREFCNT_dec (req->sv3);
		671	SvREFCNT_dec (req->sv4);
471	SvREFCNT_dec (req->callback);	672	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473		673
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476
477	Safefree (req);	674	free (req);
478	}	675	}
479		676
		677	static void
480	static void req_cancel_subs (aio_req grp)	678	req_cancel_subs (aio_req grp)
481	{	679	{
482	aio_req sub;
483
484	if (grp->type != REQ_GROUP)	680	if (grp->type != EIO_GROUP)
485	return;	681	return;
486		682
487	SvREFCNT_dec (grp->fh2);	683	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	684	grp->sv2 = 0;
489		685
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	686	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	687	}
493		688
494	static void req_cancel (aio_req req)	689	static void ecb_cold
		690	create_respipe (void)
495	{	691	{
496	req->flags |= FLAG_CANCELLED;	692	if (s_epipe_renew (&respipe))
497		693	croak ("IO::AIO: unable to initialize result pipe");
498	req_cancel_subs (req);
499	}	694	}
500		695
501	static int poll_cb (int max)	696	static void
		697	poll_wait (void)
502	{	698	{
503	dSP;	699	while (eio_nreqs ())
504	int count = 0;	700	{
505	int do_croak = 0;	701	int size;
		702
		703	X_LOCK (reslock);
		704	size = res_queue.size;
		705	X_UNLOCK (reslock);
		706
		707	if (size)
		708	return;
		709
		710	etp_maybe_start_thread ();
		711
		712	s_epipe_wait (&respipe);
		713	}
		714	}
		715
		716	static int
		717	poll_cb (void)
		718	{
		719	for (;;)
		720	{
		721	int res = eio_poll ();
		722
		723	if (res > 0)
		724	croak (0);
		725
		726	if (!max_outstanding || max_outstanding > eio_nreqs ())
		727	return res;
		728
		729	poll_wait ();
		730	}
		731	}
		732
		733	static void ecb_cold
		734	reinit (void)
		735	{
		736	create_respipe ();
		737
		738	if (eio_init (want_poll, done_poll) < 0)
		739	croak ("IO::AIO: unable to initialise eio library");
		740	}
		741
		742	/*****************************************************************************/
		743
		744	#if !_POSIX_MAPPED_FILES
		745	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		746	# define munmap(addr,length) EIO_ENOSYS ()
		747	#endif
		748
		749	#if !_POSIX_MEMORY_PROTECTION
		750	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		751	# define PROT_NONE 0
		752	# define PROT_WRITE 0
		753	# define MAP_PRIVATE 0
		754	# define MAP_SHARED 0
		755	# define MAP_FIXED 0
		756	#endif
		757
		758	#define MMAP_MAGIC PERL_MAGIC_ext
		759
		760	static int ecb_cold
		761	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		762	{
		763	int old_errno = errno;
		764	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		765	errno = old_errno;
		766
		767	mg->mg_obj = 0; /* just in case */
		768
		769	SvREADONLY_off (sv);
		770
		771	if (SvPVX (sv) != mg->mg_ptr)
		772	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		773
		774	SvCUR_set (sv, 0);
		775	SvPVX (sv) = 0;
		776	SvOK_off (sv);
		777
		778	return 0;
		779	}
		780
		781	static MGVTBL mmap_vtbl = {
		782	0, 0, 0, 0, mmap_free
		783	};
		784
		785	/*****************************************************************************/
		786
		787	static SV *
		788	get_cb (SV *cb_sv)
		789	{
		790	SvGETMAGIC (cb_sv);
		791	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		792	}
		793
		794	static aio_req ecb_noinline
		795	dreq (SV *callback)
		796	{
		797	SV *cb_cv;
506	aio_req req;	798	aio_req req;
		799	int req_pri = next_pri;
		800	next_pri = EIO_PRI_DEFAULT;
507		801
508	while (max <= 0 || count < max)	802	cb_cv = get_cb (callback);
		803
		804	req = calloc (sizeof (*req), 1);
		805	if (!req)
		806	croak ("out of memory during eio_req allocation");
		807
		808	req->callback = SvREFCNT_inc (cb_cv);
		809	req->pri = req_pri;
		810
		811	return req;
		812	}
		813
		814	#define dREQ \
		815	aio_req req = dreq (callback); \
		816
		817	#define REQ_SEND \
		818	PUTBACK; \
		819	req_submit (req); \
		820	SPAGAIN; \
		821	\
		822	if (GIMME_V != G_VOID) \
		823	XPUSHs (req_sv (req, aio_req_stash));
		824
		825	ecb_inline void
		826	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		827	{
		828	if (expect_false (SvROK (path)))
509	{	829	{
510	LOCK (reslock);	830	SV *rv = SvRV (path);
511	req = reqq_shift (&res_queue);	831	SV *wdob;
512		832
513	if (req)	833	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
514	{	834	{
515	if (!res_queue.size)	835	path = AvARRAY (rv)[1];
		836	wdob = AvARRAY (rv)[0];
		837
		838	if (SvOK (wdob))
516	{	839	{
517	/* read any signals sent by the worker threads */	840	*wd = SvAIO_WD (wdob);
518	char buf [32];	841	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
519	while (read (respipe [0], buf, 32) == 32)
520	;
521	}	842	}
		843	else
		844	*wd = EIO_INVALID_WD;
522	}	845	}
523		846	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
524	UNLOCK (reslock);
525
526	if (!req)
527	break;
528
529	--nreqs;
530
531	if (req->type == REQ_QUIT)
532	started--;
533	else if (req->type == REQ_GROUP && req->length)
534	{	847	{
535	req->fd = 1; /* mark request as delayed */	848	*wd = (aio_wd)(long)SvIVX (rv);
536	continue;	849	*wdsv = SvREFCNT_inc_NN (rv);
		850	*ptr = ".";
		851	return; /* path set to "." */
537	}	852	}
538	else	853	else
539	{	854	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
540	if (req->type == REQ_READ)
541	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544	SvREADONLY_off (req->data);
545
546	if (req->statdata)
547	{
548	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549	PL_laststatval = req->result;
550	PL_statcache = *(req->statdata);
551	}
552
553	req_invoke (req);
554
555	count++;
556	}
557
558	req_free (req);
559	}	855	}
560		856
561	return count;	857	*pathsv = newSVsv (path);
		858	*ptr = SvPVbyte_nolen (*pathsv);
562	}	859	}
563		860
564	static void *aio_proc(void *arg);	861	static void ecb_noinline
565		862	req_set_path1 (aio_req req, SV *path)
566	static void start_thread (void)
567	{	863	{
568	sigset_t fullsigset, oldsigset;	864	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
569	pthread_attr_t attr;	865	}
570		866
571	worker *wrk = calloc (1, sizeof (worker));	867	static void ecb_noinline
		868	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		869	{
		870	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
572		871
573	if (!wrk)	872	switch (SvTYPE (rv))
574	croak ("unable to allocate worker thread data");
575
576	pthread_attr_init (&attr);
577	pthread_attr_setstacksize (&attr, STACKSIZE);
578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580	sigfillset (&fullsigset);
581
582	LOCK (wrklock);
583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584
585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
586	{	873	{
587	wrk->prev = &wrk_first;	874	case SVt_PVIO:
588	wrk->next = wrk_first.next;	875	case SVt_PVLV:
589	wrk_first.next->prev = wrk;	876	case SVt_PVGV:
590	wrk_first.next = wrk;	877	req->type = type_fh;
591	started++;	878	req->sv1 = newSVsv (fh_or_path);
		879	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		880	break;
		881
		882	default:
		883	req->type = type_path;
		884	req_set_path1 (req, fh_or_path);
		885	break;
592	}	886	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	887	}
599		888
600	static void req_send (aio_req req)	889	XS(boot_IO__AIO) ecb_cold;
601	{
602	while (started < wanted && nreqs >= started)
603	start_thread ();
604		890
605	++nreqs;	891	MODULE = IO::AIO PACKAGE = IO::AIO
606		892
607	LOCK (reqlock);	893	PROTOTYPES: ENABLE
608	reqq_push (&req_queue, req);
609	pthread_cond_signal (&reqwait);
610	UNLOCK (reqlock);
611	}
612		894
613	static void end_thread (void)	895	BOOT:
614	{	896	{
615	aio_req req;	897	static const struct {
		898	const char *name;
		899	IV iv;
		900	} *civ, const_iv[] = {
		901	# define const_niv(name, value) { # name, (IV) value },
		902	# define const_iv(name) { # name, (IV) name },
		903	# define const_eio(name) { # name, (IV) EIO_ ## name },
616		904
617	Newz (0, req, 1, aio_cb);	905	/* you have to re-run ./gendef0 after adding/Removing any constants here */
618		906
619	req->type = REQ_QUIT;	907	const_iv (ENOSYS)
620	req->pri = PRI_MAX + PRI_BIAS;	908	const_iv (EXDEV)
		909	const_iv (EBADR)
621		910
622	req_send (req);	911	const_iv (O_RDONLY)
623	}	912	const_iv (O_WRONLY)
		913	const_iv (O_RDWR)
		914	const_iv (O_CREAT)
		915	const_iv (O_TRUNC)
		916	const_iv (O_EXCL)
		917	const_iv (O_APPEND)
624		918
625	static void min_parallel (int nthreads)	919	const_iv (O_ASYNC)
626	{	920	const_iv (O_DIRECT)
627	if (wanted < nthreads)	921	const_iv (O_NOATIME)
628	wanted = nthreads;
629	}
630		922
631	static void max_parallel (int nthreads)	923	const_iv (O_CLOEXEC)
632	{	924	const_iv (O_NOCTTY)
633	int cur = started;	925	const_iv (O_NOFOLLOW)
		926	const_iv (O_NONBLOCK)
		927	const_iv (O_EXEC)
		928	const_iv (O_SEARCH)
		929	const_iv (O_DIRECTORY)
		930	const_iv (O_DSYNC)
		931	const_iv (O_RSYNC)
		932	const_iv (O_SYNC)
		933	const_iv (O_TTY_INIT)
634		934
635	if (wanted > nthreads)	935	const_iv (S_IFIFO)
636	wanted = nthreads;	936	const_iv (S_IFCHR)
		937	const_iv (S_IFBLK)
		938	const_iv (S_IFLNK)
		939	const_iv (S_IFREG)
		940	const_iv (S_IFDIR)
		941	const_iv (S_IFWHT)
		942	const_iv (S_IFSOCK)
		943	const_iv (S_IFMT)
637		944
638	while (cur > wanted)	945	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
639	{	946	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
640	end_thread ();	947	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
641	cur--;	948	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
642	}	949	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		950	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
643		951
644	while (started > wanted)	952	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
645	{	953	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
646	poll_wait ();	954	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
647	poll_cb (0);	955	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
648	}	956	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
649	}
650		957
651	static void create_pipe ()	958	const_iv (ST_RDONLY)
652	{	959	const_iv (ST_NOSUID)
653	if (pipe (respipe))	960	const_iv (ST_NODEV)
654	croak ("unable to initialize result pipe");	961	const_iv (ST_NOEXEC)
		962	const_iv (ST_SYNCHRONOUS)
		963	const_iv (ST_MANDLOCK)
		964	const_iv (ST_WRITE)
		965	const_iv (ST_APPEND)
		966	const_iv (ST_IMMUTABLE)
		967	const_iv (ST_NOATIME)
		968	const_iv (ST_NODIRATIME)
		969	const_iv (ST_RELATIME)
655		970
656	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	971	const_iv (PROT_NONE)
657	croak ("cannot set result pipe to nonblocking mode");	972	const_iv (PROT_EXEC)
		973	const_iv (PROT_READ)
		974	const_iv (PROT_WRITE)
658		975
659	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	976	/*const_iv (MAP_FIXED)*/
660	croak ("cannot set result pipe to nonblocking mode");	977	const_iv (MAP_PRIVATE)
661	}	978	const_iv (MAP_SHARED)
		979	const_iv (MAP_ANONYMOUS)
662		980
663	/*****************************************************************************/	981	/* linuxish */
664	/* work around various missing functions */	982	const_iv (MAP_HUGETLB)
		983	const_iv (MAP_LOCKED)
		984	const_iv (MAP_NORESERVE)
		985	const_iv (MAP_POPULATE)
		986	const_iv (MAP_NONBLOCK)
665		987
666	#if !HAVE_PREADWRITE	988	const_iv (FIEMAP_FLAG_SYNC)
667	# define pread aio_pread	989	const_iv (FIEMAP_FLAG_XATTR)
668	# define pwrite aio_pwrite	990	const_iv (FIEMAP_FLAGS_COMPAT)
		991	const_iv (FIEMAP_EXTENT_LAST)
		992	const_iv (FIEMAP_EXTENT_UNKNOWN)
		993	const_iv (FIEMAP_EXTENT_DELALLOC)
		994	const_iv (FIEMAP_EXTENT_ENCODED)
		995	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		996	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		997	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		998	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		999	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1000	const_iv (FIEMAP_EXTENT_MERGED)
		1001	const_iv (FIEMAP_EXTENT_SHARED)
669		1002
670	/*	1003	const_iv (SPLICE_F_MOVE)
671	* make our pread/pwrite safe against themselves, but not against	1004	const_iv (SPLICE_F_NONBLOCK)
672	* normal read/write by using a mutex. slows down execution a lot,	1005	const_iv (SPLICE_F_MORE)
673	* but that's your problem, not mine.	1006	const_iv (SPLICE_F_GIFT)
674	*/
675	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
676		1007
677	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1008	const_iv (SEEK_DATA)
678	{	1009	const_iv (SEEK_HOLE)
679	ssize_t res;
680	off_t ooffset;
681		1010
682	LOCK (preadwritelock);	1011	/* libeio constants */
683	ooffset = lseek (fd, 0, SEEK_CUR);	1012	const_eio (SEEK_SET)
684	lseek (fd, offset, SEEK_SET);	1013	const_eio (SEEK_CUR)
685	res = read (fd, buf, count);	1014	const_eio (SEEK_END)
686	lseek (fd, ooffset, SEEK_SET);
687	UNLOCK (preadwritelock);
688		1015
689	return res;	1016	const_eio (MCL_FUTURE)
690	}	1017	const_eio (MCL_CURRENT)
691		1018
692	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1019	const_eio (MS_ASYNC)
693	{	1020	const_eio (MS_INVALIDATE)
694	ssize_t res;	1021	const_eio (MS_SYNC)
695	off_t ooffset;
696		1022
697	LOCK (preadwritelock);	1023	const_eio (MT_MODIFY)
698	ooffset = lseek (fd, 0, SEEK_CUR);
699	lseek (fd, offset, SEEK_SET);
700	res = write (fd, buf, count);
701	lseek (fd, offset, SEEK_SET);
702	UNLOCK (preadwritelock);
703		1024
704	return res;	1025	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
705	}	1026	const_eio (SYNC_FILE_RANGE_WRITE)
706	#endif	1027	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
707		1028
708	#if !HAVE_FDATASYNC	1029	const_eio (FALLOC_FL_KEEP_SIZE)
709	# define fdatasync fsync	1030	const_eio (FALLOC_FL_PUNCH_HOLE)
710	#endif
711		1031
712	#if !HAVE_READAHEAD	1032	const_eio (READDIR_DENTS)
713	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	1033	const_eio (READDIR_DIRS_FIRST)
		1034	const_eio (READDIR_STAT_ORDER)
		1035	const_eio (READDIR_FOUND_UNKNOWN)
714		1036
715	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	1037	const_eio (DT_UNKNOWN)
716	{	1038	const_eio (DT_FIFO)
717	dBUF;	1039	const_eio (DT_CHR)
718		1040	const_eio (DT_DIR)
719	while (count > 0)	1041	const_eio (DT_BLK)
720	{	1042	const_eio (DT_REG)
721	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	1043	const_eio (DT_LNK)
722		1044	const_eio (DT_SOCK)
723	pread (fd, aio_buf, len, offset);	1045	const_eio (DT_WHT)
724	offset += len;
725	count -= len;
726	}
727
728	errno = 0;
729	}
730
731	#endif
732
733	#if !HAVE_READDIR_R
734	# define readdir_r aio_readdir_r
735
736	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
737
738	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
739	{
740	struct dirent *e;
741	int errorno;
742
743	LOCK (readdirlock);
744
745	e = readdir (dirp);
746	errorno = errno;
747
748	if (e)
749	{
750	*res = ent;
751	strcpy (ent->d_name, e->d_name);
752	}
753	else
754	*res = 0;
755
756	UNLOCK (readdirlock);
757
758	errno = errorno;
759	return e ? 0 : -1;
760	}
761	#endif
762
763	/* sendfile always needs emulation */
764	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
765	{
766	ssize_t res;
767
768	if (!count)
769	return 0;
770
771	#if HAVE_SENDFILE
772	# if __linux
773	res = sendfile (ofd, ifd, &offset, count);
774
775	# elif __freebsd
776	/*
777	* Of course, the freebsd sendfile is a dire hack with no thoughts
778	* wasted on making it similar to other I/O functions.
779	*/
780	{
781	off_t sbytes;
782	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
783
784	if (res < 0 && sbytes)
785	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
786	res = sbytes;
787	}	1046	};
788		1047
789	# elif __hpux	1048	aio_stash = gv_stashpv ("IO::AIO" , 1);
790	res = sendfile (ofd, ifd, offset, count, 0, 0);	1049	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1050	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1051	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
791		1052
792	# elif __solaris	1053	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
793	{	1054	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
794	struct sendfilevec vec;
795	size_t sbytes;
796		1055
797	vec.sfv_fd = ifd;	1056	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
798	vec.sfv_flag = 0;
799	vec.sfv_off = offset;
800	vec.sfv_len = count;
801		1057
802	res = sendfilev (ofd, &vec, 1, &sbytes);	1058	reinit ();
		1059	}
803		1060
804	if (res < 0 && sbytes)	1061	void
		1062	reinit ()
		1063	PROTOTYPE:
		1064
		1065	void
		1066	max_poll_reqs (unsigned int nreqs)
		1067	PROTOTYPE: $
		1068	CODE:
		1069	eio_set_max_poll_reqs (nreqs);
		1070
		1071	void
		1072	max_poll_time (double nseconds)
		1073	PROTOTYPE: $
		1074	CODE:
		1075	eio_set_max_poll_time (nseconds);
		1076
		1077	void
		1078	min_parallel (unsigned int nthreads)
		1079	PROTOTYPE: $
		1080	CODE:
		1081	eio_set_min_parallel (nthreads);
		1082
		1083	void
		1084	max_parallel (unsigned int nthreads)
		1085	PROTOTYPE: $
		1086	CODE:
		1087	eio_set_max_parallel (nthreads);
		1088
		1089	void
		1090	max_idle (unsigned int nthreads)
		1091	PROTOTYPE: $
		1092	CODE:
		1093	eio_set_max_idle (nthreads);
		1094
		1095	void
		1096	idle_timeout (unsigned int seconds)
		1097	PROTOTYPE: $
		1098	CODE:
		1099	eio_set_idle_timeout (seconds);
		1100
		1101	void
		1102	max_outstanding (unsigned int maxreqs)
		1103	PROTOTYPE: $
		1104	CODE:
		1105	max_outstanding = maxreqs;
		1106
		1107	void
		1108	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1109	PPCODE:
		1110	{
		1111	dREQ;
		1112
		1113	req->type = EIO_WD_OPEN;
		1114	req_set_path1 (req, pathname);
		1115
		1116	REQ_SEND;
		1117	}
		1118
		1119	void
		1120	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1121	PPCODE:
		1122	{
		1123	dREQ;
		1124
		1125	req->type = EIO_OPEN;
		1126	req_set_path1 (req, pathname);
		1127	req->int1 = flags;
		1128	req->int2 = mode;
		1129
		1130	REQ_SEND;
		1131	}
		1132
		1133	void
		1134	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1135	ALIAS:
		1136	aio_fsync = EIO_FSYNC
		1137	aio_fdatasync = EIO_FDATASYNC
		1138	aio_syncfs = EIO_SYNCFS
		1139	PPCODE:
		1140	{
		1141	int fd = s_fileno_croak (fh, 0);
		1142	dREQ;
		1143
		1144	req->type = ix;
		1145	req->sv1 = newSVsv (fh);
		1146	req->int1 = fd;
		1147
		1148	REQ_SEND;
		1149	}
		1150
		1151	void
		1152	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1153	PPCODE:
		1154	{
		1155	int fd = s_fileno_croak (fh, 0);
		1156	dREQ;
		1157
		1158	req->type = EIO_SYNC_FILE_RANGE;
		1159	req->sv1 = newSVsv (fh);
		1160	req->int1 = fd;
		1161	req->offs = offset;
805	res = sbytes;	1162	req->size = nbytes;
806	}	1163	req->int2 = flags;
807		1164
808	# endif	1165	REQ_SEND;
		1166	}
		1167
		1168	void
		1169	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1170	PPCODE:
		1171	{
		1172	int fd = s_fileno_croak (fh, 0);
		1173	dREQ;
		1174
		1175	req->type = EIO_FALLOCATE;
		1176	req->sv1 = newSVsv (fh);
		1177	req->int1 = fd;
		1178	req->int2 = mode;
		1179	req->offs = offset;
		1180	req->size = len;
		1181
		1182	REQ_SEND;
		1183	}
		1184
		1185	void
		1186	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1187	PPCODE:
		1188	{
		1189	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1190	int fd = s_fileno_croak (fh, 0);
		1191	dREQ;
		1192
		1193	if (expect_false (close_fd < 0))
		1194	{
		1195	int pipefd [2];
		1196
		1197	if (
		1198	#ifdef _WIN32
		1199	_pipe (pipefd, 1, _O_BINARY) < 0
809	#else	1200	#else
810	res = -1;	1201	pipe (pipefd) < 0
811	errno = ENOSYS;	1202	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
812	#endif	1203	#endif
813		1204	|| close (pipefd [1]) < 0
814	if (res < 0
815	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
816	#if __solaris
817	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
818	#endif
819	)
820	)
821	{
822	/* emulate sendfile. this is a major pain in the ass */
823	dBUF;
824
825	res = 0;
826
827	while (count)
828	{
829	ssize_t cnt;
830
831	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
832
833	if (cnt <= 0)
834	{	1205	)
835	if (cnt && !res) res = -1;	1206	abort (); /*D*/
836	break;
837	}
838		1207
839	cnt = write (ofd, aio_buf, cnt);	1208	close_fd = pipefd [0];
840
841	if (cnt <= 0)
842	{
843	if (cnt && !res) res = -1;
844	break;
845	}
846
847	offset += cnt;
848	res += cnt;
849	count -= cnt;
850	}
851	}
852
853	return res;
854	}
855
856	/* read a full directory */
857	static void scandir_ (aio_req req, worker *self)
858	{
859	DIR *dirp;
860	union
861	{
862	struct dirent d;
863	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
864	} *u;
865	struct dirent *entp;
866	char *name, *names;
867	int memlen = 4096;
868	int memofs = 0;
869	int res = 0;
870	int errorno;
871
872	LOCK (wrklock);
873	self->dirp = dirp = opendir (req->dataptr);
874	self->dbuf = u = malloc (sizeof (*u));
875	req->data2ptr = names = malloc (memlen);
876	UNLOCK (wrklock);
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	}	1209	}
909	}
910		1210
911	if (errno)	1211	req->type = EIO_DUP2;
912	res = -1;	1212	req->int1 = close_fd;
913		1213	req->sv2 = newSVsv (fh);
914	req->result = res;	1214	req->int2 = fd;
915	}
916		1215
917	/*****************************************************************************/	1216	REQ_SEND;
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	}	1217	}
1010		1218
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	1219	void
1107	min_parallel (nthreads)	1220	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1108	int nthreads	1221	PPCODE:
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: $$$;$
1123	PPCODE:
1124	{	1222	{
		1223	int fd = s_fileno_croak (fh, 0);
1125	dREQ;	1224	dREQ;
1126		1225
1127	req->type = REQ_OPEN;	1226	req->type = EIO_SEEK;
1128	req->data = newSVsv (pathname);	1227	req->sv1 = newSVsv (fh);
1129	req->dataptr = SvPVbyte_nolen (req->data);	1228	req->int1 = fd;
1130	req->fd = flags;	1229	req->offs = SvVAL64 (offset);
1131	req->mode = mode;	1230	req->int2 = whence;
1132		1231
1133	REQ_SEND;	1232	REQ_SEND;
1134	}	1233	}
1135		1234
1136	void	1235	void
1137	aio_close (fh,callback=&PL_sv_undef)	1236	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$
1141	ALIAS:	1237	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC
1145	PPCODE:
1146	{
1147	dREQ;
1148
1149	req->type = ix;
1150	req->fh = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152
1153	REQ_SEND (req);
1154	}
1155
1156	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:
1165	aio_read = REQ_READ	1238	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	1239	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$
1168	PPCODE:	1240	PPCODE:
1169	{	1241	{
1170	aio_req req;
1171	STRLEN svlen;	1242	STRLEN svlen;
		1243	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	1244	char *svptr = SvPVbyte (data, svlen);
1173		1245	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		1246
1177	if (dataoffset < 0)	1247	if (dataoffset < 0)
1178	dataoffset += svlen;	1248	dataoffset += svlen;
1179		1249
1180	if (dataoffset < 0 || dataoffset > svlen)	1250	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	1251	croak ("dataoffset outside of data scalar");
1182		1252
1183	if (ix == REQ_WRITE)	1253	if (ix == EIO_WRITE)
1184	{	1254	{
1185	/* write: check length and adjust. */	1255	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	1256	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	1257	len = svlen - dataoffset;
1188	}	1258	}
1189	else	1259	else
1190	{	1260	{
1191	/* read: grow scalar as necessary */	1261	/* read: check type and grow scalar as necessary */
		1262	SvUPGRADE (data, SVt_PV);
		1263	if (SvLEN (data) >= SvCUR (data))
1192	svptr = SvGROW (data, length + dataoffset);	1264	svptr = SvGROW (data, len + dataoffset + 1);
		1265	else if (SvCUR (data) < len + dataoffset)
		1266	croak ("length + dataoffset outside of scalar, and cannot grow");
1193	}	1267	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		1268
1198	{	1269	{
1199	dREQ;	1270	dREQ;
1200		1271
1201	req->type = ix;	1272	req->type = ix;
1202	req->fh = newSVsv (fh);	1273	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1274	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	1275	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	1276	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	1277	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1278	req->ptr2 = (char *)svptr + dataoffset;
		1279	req->stroffset = dataoffset;
1209		1280
1210	if (!SvREADONLY (data))	1281	if (!SvREADONLY (data))
1211	{	1282	{
1212	SvREADONLY_on (data);	1283	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1284	req->flags |= FLAG_SV2_RO_OFF;
1214	}	1285	}
1215		1286
1216	REQ_SEND;	1287	REQ_SEND;
1217	}	1288	}
1218	}	1289	}
1219		1290
1220	void	1291	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1292	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1222	SV * out_fh	1293	ALIAS:
1223	SV * in_fh	1294	aio_readlink = EIO_READLINK
1224	UV in_offset	1295	aio_realpath = EIO_REALPATH
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$
1228	PPCODE:	1296	PPCODE:
1229	{	1297	{
		1298	dREQ;
		1299
		1300	req->type = ix;
		1301	req_set_path1 (req, pathname);
		1302
		1303	REQ_SEND;
		1304	}
		1305
		1306	void
		1307	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1308	PPCODE:
		1309	{
		1310	int ifd = s_fileno_croak (in_fh , 0);
		1311	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	1312	dREQ;
1231		1313
1232	req->type = REQ_SENDFILE;	1314	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1315	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1316	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	1317	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1318	req->int2 = ifd;
1237	req->offset = in_offset;	1319	req->offs = in_offset;
1238	req->length = length;	1320	req->size = length;
1239		1321
1240	REQ_SEND;	1322	REQ_SEND;
1241	}	1323	}
1242		1324
1243	void	1325	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1326	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$
1250	PPCODE:	1327	PPCODE:
1251	{	1328	{
		1329	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	1330	dREQ;
1253		1331
1254	req->type = REQ_READAHEAD;	1332	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	1333	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1334	req->int1 = fd;
1257	req->offset = offset;	1335	req->offs = offset;
1258	req->length = length;	1336	req->size = length;
1259		1337
1260	REQ_SEND;	1338	REQ_SEND;
1261	}	1339	}
1262		1340
1263	void	1341	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1342	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1343	ALIAS:
1268	aio_stat = REQ_STAT	1344	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	1345	aio_lstat = EIO_LSTAT
		1346	aio_statvfs = EIO_STATVFS
1270	PPCODE:	1347	PPCODE:
1271	{	1348	{
1272	dREQ;	1349	dREQ;
1273		1350
1274	New (0, req->statdata, 1, Stat_t);	1351	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		1352
1294	REQ_SEND;	1353	REQ_SEND;
1295	}	1354	}
1296		1355
		1356	UV
		1357	major (UV dev)
		1358	ALIAS:
		1359	minor = 1
		1360	CODE:
		1361	RETVAL = ix ? major (dev) : minor (dev);
		1362	OUTPUT:
		1363	RETVAL
		1364
		1365	UV
		1366	makedev (UV maj, UV min)
		1367	CODE:
		1368	RETVAL = makedev (maj, min);
		1369	OUTPUT:
		1370	RETVAL
		1371
1297	void	1372	void
		1373	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1374	PPCODE:
		1375	{
		1376	dREQ;
		1377
		1378	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1379	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1380	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1381
		1382	REQ_SEND;
		1383	}
		1384
		1385	void
		1386	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1387	PPCODE:
		1388	{
		1389	dREQ;
		1390
		1391	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1392	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
		1398	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1399	PPCODE:
		1400	{
		1401	dREQ;
		1402
		1403	req->int2 = mode;
		1404	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1405
		1406	REQ_SEND;
		1407	}
		1408
		1409	void
		1410	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1411	PPCODE:
		1412	{
		1413	dREQ;
		1414
		1415	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1416	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1417	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1418
		1419	REQ_SEND;
		1420	}
		1421
		1422	void
		1423	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1424	PPCODE:
		1425	{
		1426	dREQ;
		1427
		1428	req->type = EIO_READDIR;
		1429	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1430
		1431	if (flags & EIO_READDIR_DENTS)
		1432	req->int1 |= EIO_READDIR_CUSTOM2;
		1433
		1434	req_set_path1 (req, pathname);
		1435
		1436	REQ_SEND;
		1437	}
		1438
		1439	void
		1440	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1441	PPCODE:
		1442	{
		1443	dREQ;
		1444
		1445	req->type = EIO_MKDIR;
		1446	req->int2 = mode;
		1447	req_set_path1 (req, pathname);
		1448
		1449	REQ_SEND;
		1450	}
		1451
		1452	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1453	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1454	ALIAS:
1302	aio_unlink = REQ_UNLINK	1455	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1456	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1457	aio_readdir = EIO_READDIR
1305	PPCODE:	1458	PPCODE:
1306	{	1459	{
1307	dREQ;	1460	dREQ;
1308		1461
1309	req->type = ix;	1462	req->type = ix;
1310	req->data = newSVsv (pathname);	1463	req_set_path1 (req, pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1464
1312
1313	REQ_SEND;	1465	REQ_SEND;
1314	}	1466	}
1315		1467
1316	void	1468	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1469	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1470	ALIAS:
1322	aio_link = REQ_LINK	1471	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1472	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1473	aio_rename = EIO_RENAME
1325	PPCODE:	1474	PPCODE:
1326	{	1475	{
		1476	eio_wd wd2 = 0;
1327	dREQ;	1477	dREQ;
1328		1478
1329	req->type = ix;	1479	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1480	req_set_path1 (req, oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1481	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1332	req->data = newSVsv (newpath);	1482	req->int3 = (long)wd2;
1333	req->dataptr = SvPVbyte_nolen (req->data);
1334		1483
1335	REQ_SEND;	1484	REQ_SEND;
1336	}	1485	}
1337		1486
1338	void	1487	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1488	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1489	PPCODE:
1343	{	1490	{
1344	dREQ;	1491	dREQ;
1345		1492
1346	req->type = REQ_BUSY;	1493	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1494	req->int2 = (mode_t)mode;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1495	req->offs = dev;
1349		1496	req_set_path1 (req, pathname);
		1497
1350	REQ_SEND;	1498	REQ_SEND;
1351	}	1499	}
1352		1500
1353	void	1501	void
1354	aio_group (callback=&PL_sv_undef)	1502	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1355	SV * callback	1503	ALIAS:
1356	PROTOTYPE: ;$	1504	aio_mtouch = EIO_MTOUCH
		1505	aio_msync = EIO_MSYNC
1357	PPCODE:	1506	PPCODE:
1358	{	1507	{
		1508	STRLEN svlen;
		1509	char *svptr = SvPVbyte (data, svlen);
		1510	UV len = SvUV (length);
		1511
		1512	if (offset < 0)
		1513	offset += svlen;
		1514
		1515	if (offset < 0 || offset > svlen)
		1516	croak ("offset outside of scalar");
		1517
		1518	if (!SvOK (length) || len + offset > svlen)
		1519	len = svlen - offset;
		1520
		1521	{
		1522	dREQ;
		1523
		1524	req->type = ix;
		1525	req->sv2 = SvREFCNT_inc (data);
		1526	req->ptr2 = (char *)svptr + offset;
		1527	req->size = len;
		1528	req->int1 = flags;
		1529
		1530	REQ_SEND;
		1531	}
		1532	}
		1533
		1534	void
		1535	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1536	PPCODE:
		1537	{
		1538	STRLEN svlen;
		1539	char *svptr = SvPVbyte (data, svlen);
		1540	UV len = SvUV (length);
		1541
		1542	if (offset < 0)
		1543	offset += svlen;
		1544
		1545	if (offset < 0 || offset > svlen)
		1546	croak ("offset outside of scalar");
		1547
		1548	if (!SvOK (length) || len + offset > svlen)
		1549	len = svlen - offset;
		1550
		1551	{
		1552	dREQ;
		1553
		1554	req->type = EIO_MLOCK;
		1555	req->sv2 = SvREFCNT_inc (data);
		1556	req->ptr2 = (char *)svptr + offset;
		1557	req->size = len;
		1558
		1559	REQ_SEND;
		1560	}
		1561	}
		1562
		1563	void
		1564	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1565	PPCODE:
		1566	{
		1567	dREQ;
		1568
		1569	req->type = EIO_MLOCKALL;
		1570	req->int1 = flags;
		1571
		1572	REQ_SEND;
		1573	}
		1574
		1575	void
		1576	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1577	PPCODE:
		1578	{
		1579	int fd = s_fileno_croak (fh, 0);
1359	dREQ;	1580	dREQ;
1360		1581
1361	req->type = REQ_GROUP;	1582	req->type = EIO_CUSTOM;
1362	req_send (req);	1583	req->sv1 = newSVsv (fh);
		1584	req->int1 = fd;
1363		1585
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1586	req->feed = fiemap;
1365	}	1587	#if HAVE_FIEMAP
		1588	/* keep our fingers crossed that the next two types are 64 bit */
		1589	req->offs = start;
		1590	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1591	req->int2 = flags;
		1592	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1593	#endif
1366		1594
		1595	REQ_SEND;
		1596	}
		1597
1367	void	1598	void
1368	aio_nop (callback=&PL_sv_undef)	1599	aio_busy (double delay, SV *callback=&PL_sv_undef)
1369	SV * callback
1370	PPCODE:	1600	PPCODE:
1371	{	1601	{
1372	dREQ;	1602	dREQ;
1373		1603
1374	req->type = REQ_NOP;	1604	req->type = EIO_BUSY;
		1605	req->nv1 = delay < 0. ? 0. : delay;
1375		1606
1376	REQ_SEND;	1607	REQ_SEND;
1377	}	1608	}
1378		1609
1379	void	1610	void
1380	aioreq_pri (int pri = DEFAULT_PRI)	1611	aio_group (SV *callback=&PL_sv_undef)
1381	CODE:	1612	PPCODE:
		1613	{
		1614	dREQ;
		1615
		1616	req->type = EIO_GROUP;
		1617
		1618	req_submit (req);
		1619	XPUSHs (req_sv (req, aio_grp_stash));
		1620	}
		1621
		1622	void
		1623	aio_nop (SV *callback=&PL_sv_undef)
		1624	ALIAS:
		1625	aio_nop = EIO_NOP
		1626	aio_sync = EIO_SYNC
		1627	PPCODE:
		1628	{
		1629	dREQ;
		1630
		1631	req->type = ix;
		1632
		1633	REQ_SEND;
		1634	}
		1635
		1636	int
		1637	aioreq_pri (int pri = 0)
		1638	CODE:
		1639	RETVAL = next_pri;
		1640	if (items > 0)
		1641	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1642	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1643	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1644	next_pri = pri;
		1645	}
		1646	OUTPUT:
		1647	RETVAL
1385		1648
1386	void	1649	void
1387	aioreq_nice (int nice = 0)	1650	aioreq_nice (int nice = 0)
1388	CODE:	1651	CODE:
1389	nice = next_pri - nice;	1652	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1653	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1654	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1655	next_pri = nice;
1393		1656
1394	void	1657	void
1395	flush ()	1658	flush ()
		1659	CODE:
		1660	while (eio_nreqs ())
		1661	{
		1662	poll_wait ();
		1663	poll_cb ();
		1664	}
		1665
		1666	int
		1667	poll ()
		1668	CODE:
		1669	poll_wait ();
		1670	RETVAL = poll_cb ();
		1671	OUTPUT:
		1672	RETVAL
		1673
		1674	int
		1675	poll_fileno ()
		1676	CODE:
		1677	RETVAL = s_epipe_fd (&respipe);
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	int
		1682	poll_cb (...)
1396	PROTOTYPE:	1683	PROTOTYPE:
1397	CODE:	1684	CODE:
1398	while (nreqs)
1399	{
1400	poll_wait ();
1401	poll_cb (0);	1685	RETVAL = poll_cb ();
1402	}
1403
1404	void
1405	poll()
1406	PROTOTYPE:
1407	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();
1411	poll_cb (0);
1412	}
1413
1414	int
1415	poll_fileno()
1416	PROTOTYPE:
1417	CODE:
1418	RETVAL = respipe [0];
1419	OUTPUT:	1686	OUTPUT:
1420	RETVAL	1687	RETVAL
1421		1688
		1689	void
		1690	poll_wait ()
		1691	CODE:
		1692	poll_wait ();
		1693
1422	int	1694	int
1423	poll_cb(...)	1695	nreqs ()
1424	PROTOTYPE:
1425	CODE:	1696	CODE:
1426	RETVAL = poll_cb (0);	1697	RETVAL = eio_nreqs ();
1427	OUTPUT:	1698	OUTPUT:
1428	RETVAL	1699	RETVAL
1429		1700
1430	int	1701	int
1431	poll_some(int max = 0)	1702	nready ()
1432	PROTOTYPE: $
1433	CODE:	1703	CODE:
1434	RETVAL = poll_cb (max);	1704	RETVAL = eio_nready ();
1435	OUTPUT:	1705	OUTPUT:
1436	RETVAL	1706	RETVAL
1437		1707
1438	void	1708	int
1439	poll_wait()	1709	npending ()
1440	PROTOTYPE:
1441	CODE:	1710	CODE:
1442	if (nreqs)	1711	RETVAL = eio_npending ();
1443	poll_wait ();
1444
1445	int
1446	nreqs()
1447	PROTOTYPE:
1448	CODE:
1449	RETVAL = nreqs;
1450	OUTPUT:	1712	OUTPUT:
1451	RETVAL	1713	RETVAL
1452		1714
		1715	int
		1716	nthreads ()
		1717	CODE:
		1718	RETVAL = eio_nthreads ();
		1719	OUTPUT:
		1720	RETVAL
		1721
		1722	int
		1723	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1724	CODE:
		1725	RETVAL = posix_fadvise (fh, offset, length, advice);
		1726	OUTPUT:
		1727	RETVAL
		1728
		1729	IV
		1730	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1731	CODE:
		1732	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1733	OUTPUT:
		1734	RETVAL
		1735
		1736	void
		1737	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1738	PPCODE:
		1739	sv_unmagic (scalar, MMAP_MAGIC);
		1740	{
		1741	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1742	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1743	if (addr == (void *)-1)
		1744	XSRETURN_NO;
		1745
		1746	sv_force_normal (scalar);
		1747
		1748	/* we store the length in mg_obj, as namlen is I32 :/ */
		1749	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1750	->mg_obj = (SV *)length;
		1751
		1752	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1753
		1754	if (!(prot & PROT_WRITE))
		1755	SvREADONLY_on (scalar);
		1756
		1757	if (SvLEN (scalar))
		1758	Safefree (SvPVX (scalar));
		1759
		1760	SvPVX (scalar) = (char *)addr;
		1761	SvCUR_set (scalar, length);
		1762	SvLEN_set (scalar, 0);
		1763	SvPOK_only (scalar);
		1764
		1765	XSRETURN_YES;
		1766	}
		1767
		1768	void
		1769	munmap (SV *scalar)
		1770	CODE:
		1771	sv_unmagic (scalar, MMAP_MAGIC);
		1772
		1773	int
		1774	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1775	ALIAS:
		1776	mprotect = 1
		1777	CODE:
		1778	{
		1779	STRLEN svlen;
		1780	void *addr = SvPVbyte (scalar, svlen);
		1781	size_t len = SvUV (length);
		1782
		1783	if (offset < 0)
		1784	offset += svlen;
		1785
		1786	if (offset < 0 || offset > svlen)
		1787	croak ("offset outside of scalar");
		1788
		1789	if (!SvOK (length) || len + offset > svlen)
		1790	len = svlen - offset;
		1791
		1792	addr = (void *)(((intptr_t)addr) + offset);
		1793	eio_page_align (&addr, &len);
		1794
		1795	switch (ix)
		1796	{
		1797	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1798	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1799	}
		1800	}
		1801	OUTPUT:
		1802	RETVAL
		1803
		1804	int
		1805	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1806	CODE:
		1807	{
		1808	STRLEN svlen;
		1809	void *addr = SvPVbyte (scalar, svlen);
		1810	size_t len = SvUV (length);
		1811
		1812	if (offset < 0)
		1813	offset += svlen;
		1814
		1815	if (offset < 0 || offset > svlen)
		1816	croak ("offset outside of scalar");
		1817
		1818	if (!SvOK (length) || len + offset > svlen)
		1819	len = svlen - offset;
		1820
		1821	addr = (void *)(((intptr_t)addr) + offset);
		1822	eio_page_align (&addr, &len);
		1823	#if _POSIX_MEMLOCK_RANGE
		1824	RETVAL = munlock (addr, len);
		1825	#else
		1826	RETVAL = EIO_ENOSYS ();
		1827	#endif
		1828	}
		1829	OUTPUT:
		1830	RETVAL
		1831
		1832	int
		1833	munlockall ()
		1834	CODE:
		1835	#if _POSIX_MEMLOCK
		1836	munlockall ();
		1837	#else
		1838	RETVAL = EIO_ENOSYS ();
		1839	#endif
		1840	OUTPUT:
		1841	RETVAL
		1842
		1843	int
		1844	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1845	CODE:
		1846	{
		1847	#if HAVE_LINUX_SPLICE
		1848	loff_t off_in_, off_out_;
		1849	RETVAL = splice (
		1850	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1851	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1852	length, flags
		1853	);
		1854	#else
		1855	RETVAL = EIO_ENOSYS ();
		1856	#endif
		1857	}
		1858	OUTPUT:
		1859	RETVAL
		1860
		1861	int
		1862	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1863	CODE:
		1864	#if HAVE_LINUX_SPLICE
		1865	RETVAL = tee (rfh, wfh, length, flags);
		1866	#else
		1867	RETVAL = EIO_ENOSYS ();
		1868	#endif
		1869	OUTPUT:
		1870	RETVAL
		1871
		1872	void _on_next_submit (SV *cb)
		1873	CODE:
		1874	SvREFCNT_dec (on_next_submit);
		1875	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1876
1453	PROTOTYPES: DISABLE	1877	PROTOTYPES: DISABLE
		1878
		1879	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1880
		1881	BOOT:
		1882	{
		1883	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1884	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1885	}
		1886
		1887	void
		1888	DESTROY (SV *self)
		1889	CODE:
		1890	{
		1891	aio_wd wd = SvAIO_WD (self);
		1892	#if HAVE_AT
		1893	{
		1894	SV *callback = &PL_sv_undef;
		1895	dREQ; /* clobbers next_pri :/ */
		1896	next_pri = req->pri; /* restore next_pri */
		1897	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1898	req->type = EIO_WD_CLOSE;
		1899	req->wd = wd;
		1900	REQ_SEND;
		1901	}
		1902	#else
		1903	eio_wd_close_sync (wd);
		1904	#endif
		1905	}
1454		1906
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1907	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1908
1457	void	1909	void
1458	cancel (aio_req_ornot req)	1910	cancel (aio_req_ornot req)
1459	CODE:	1911	CODE:
1460	req_cancel (req);	1912	eio_cancel (req);
1461		1913
1462	void	1914	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1915	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1464	CODE:	1916	PPCODE:
		1917	{
		1918	if (GIMME_V != G_VOID)
		1919	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1920
		1921	if (items > 1)
		1922	{
		1923	SV *cb_cv =get_cb (callback);
		1924
1465	SvREFCNT_dec (req->callback);	1925	SvREFCNT_dec (req->callback);
1466	req->callback = newSVsv (callback);	1926	req->callback = SvREFCNT_inc (cb_cv);
		1927	}
		1928	}
1467		1929
1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1930	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469		1931
1470	void	1932	void
1471	add (aio_req grp, ...)	1933	add (aio_req grp, ...)
1472	PPCODE:	1934	PPCODE:
1473	{	1935	{
1474	int i;	1936	int i;
1475	aio_req req;
1476		1937
1477	if (grp->fd == 2)	1938	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1939	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1940
1480	for (i = 1; i < items; ++i )	1941	for (i = 1; i < items; ++i )
1481	{	1942	{
		1943	aio_req req;
		1944
1482	if (GIMME_V != G_VOID)	1945	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1946	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		1947
1485	req = SvAIO_REQ (ST (i));	1948	req = SvAIO_REQ (ST (i));
1486		1949
1487	if (req)	1950	if (req)
1488	{	1951	eio_grp_add (grp, req);
1489	++grp->length;
1490	req->grp = grp;
1491
1492	req->grp_prev = 0;
1493	req->grp_next = grp->grp_first;
1494
1495	if (grp->grp_first)
1496	grp->grp_first->grp_prev = req;
1497
1498	grp->grp_first = req;
1499	}
1500	}	1952	}
1501	}	1953	}
1502		1954
1503	void	1955	void
1504	cancel_subs (aio_req_ornot req)	1956	cancel_subs (aio_req_ornot req)
…		…
1508	void	1960	void
1509	result (aio_req grp, ...)	1961	result (aio_req grp, ...)
1510	CODE:	1962	CODE:
1511	{	1963	{
1512	int i;	1964	int i;
		1965	AV *av;
		1966
		1967	grp->errorno = errno;
		1968
1513	AV *av = newAV ();	1969	av = newAV ();
		1970	av_extend (av, items - 1);
1514		1971
1515	for (i = 1; i < items; ++i )	1972	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1973	av_push (av, newSVsv (ST (i)));
1517		1974
1518	SvREFCNT_dec (grp->data);	1975	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1976	grp->sv1 = (SV *)av;
1520	}	1977	}
		1978
		1979	void
		1980	errno (aio_req grp, int errorno = errno)
		1981	CODE:
		1982	grp->errorno = errorno;
1521		1983
1522	void	1984	void
1523	limit (aio_req grp, int limit)	1985	limit (aio_req grp, int limit)
1524	CODE:	1986	CODE:
1525	grp->fd2 = limit;	1987	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		1988
1528	void	1989	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1990	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1991	CODE:
1531	{	1992	{
1532	SvREFCNT_dec (grp->fh2);	1993	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1994	grp->sv2 = newSVsv (callback);
		1995	grp->feed = aio_grp_feed;
1534		1996
1535	if (grp->fd2 <= 0)	1997	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1998	grp->int2 = 2;
1537		1999
1538	aio_grp_feed (grp);	2000	eio_grp_limit (grp, grp->int2);
1539	}	2001	}
1540		2002

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