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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.73 by root, Tue Oct 24 21:26:30 2006 UTC vs.
Revision 1.232 by root, Sat Jun 13 00:06:13 2015 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>	21	# include <sys/mman.h>
38	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. on't complain if this fails for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
		36
		37	/* perl namespace pollution */
		38	#undef VERSION
		39
		40	/* perl stupidly overrides readdir and maybe others */
		41	/* with thread-unsafe versions, imagine that :( */
		42	#undef readdir
		43	#undef opendir
		44	#undef closedir
		45
		46	#ifdef _WIN32
		47
		48	// perl overrides all those nice libc functions
		49
		50	#undef malloc
		51	#undef free
		52	#undef open
		53	#undef read
		54	#undef write
		55	#undef send
		56	#undef recv
		57	#undef stat
		58	#undef lstat
		59	#undef fstat
		60	#undef truncate
		61	#undef ftruncate
		62	#undef open
		63	#undef link
		64	#undef close
		65	#undef unlink
		66	#undef mkdir
		67	#undef rmdir
		68	#undef rename
		69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
		79
		80	#define EIO_STRUCT_STAT struct _stati64
		81	#define EIO_STRUCT_STATI64
		82
		83	#else
		84
39	# include <sys/socket.h>	85	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	86	#include <sys/select.h>
		87	#include <unistd.h>
		88	#include <utime.h>
		89	#include <signal.h>
		90
		91	#define EIO_STRUCT_STAT Stat_t
		92
		93	#endif
		94
		95	/*****************************************************************************/
		96
		97	#if __GNUC__ >= 3
		98	# define expect(expr,value) __builtin_expect ((expr),(value))
		99	#else
		100	# define expect(expr,value) (expr)
		101	#endif
		102
		103	#define expect_false(expr) expect ((expr) != 0, 0)
		104	#define expect_true(expr) expect ((expr) != 0, 1)
		105
		106	/*****************************************************************************/
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
		109	typedef int aio_rfd; /* read file desriptor */
		110	typedef int aio_wfd; /* write file descriptor */
		111
		112	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		113
		114	#define EIO_REQ_MEMBERS \
		115	SV *callback; \
		116	SV *sv1, *sv2; \
		117	SV *sv3, *sv4; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	static int req_invoke (eio_req *req);
		127	#define EIO_FINISH(req) req_invoke (req)
		128	static void req_destroy (eio_req *grp);
		129	#define EIO_DESTROY(req) req_destroy (req)
		130
		131	#include "libeio/eio.c"
		132
		133	#if !HAVE_POSIX_FADVISE
		134	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#if !HAVE_POSIX_MADVISE
		138	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		139	#endif
		140
		141	#ifndef MAP_ANONYMOUS
		142	# ifdef MAP_ANON
		143	# define MAP_ANONYMOUS MAP_ANON
42	# else	144	# else
43	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	146	# endif
45	#endif	147	#endif
46		148
47	/* used for struct dirent, AIX doesn't provide it */	149	/* defines all sorts of constants to 0 unless they are already defined */
48	#ifndef NAME_MAX	150	#include "def0.h"
49	# define NAME_MAX 4096
50	#endif
51		151
52	#if __ia64	152	#ifndef makedev
53	# define STACKSIZE 65536	153	# define makedev(maj,min) (((maj) << 8) | (min))
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif	154	#endif
		155	#ifndef major
		156	# define major(dev) ((dev) >> 8)
		157	#endif
		158	#ifndef minor
		159	# define minor(dev) ((dev) & 0xff)
		160	#endif
59		161
60	/* buffer size for various temporary buffers */	162	#if PAGESIZE <= 0
61	#define AIO_BUFSIZE 65536	163	# define PAGESIZE sysconf (_SC_PAGESIZE)
		164	#endif
62		165
63	#define dBUF \	166	/*****************************************************************************/
64	char *aio_buf; \	167
65	LOCK (wrklock); \	168	static void
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	169	fiemap (eio_req *req)
67	UNLOCK (wrklock); \	170	{
68	if (!aio_buf) \	171	req->result = -1;
		172
		173	#if HAVE_FIEMAP
		174	/* assume some c99 */
		175	struct fiemap *fiemap = 0;
		176	size_t end_offset;
		177	int count = req->int3;
		178
		179	req->flags |= EIO_FLAG_PTR1_FREE;
		180
		181	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		182	/* increase in 3.5kb steps */
		183	if (count < 0)
		184	count = 8;
		185
		186	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		187	errno = ENOMEM;
		188	if (!fiemap)
69	return -1;	189	return;
70		190
71	enum {	191	req->ptr1 = fiemap;
72	REQ_QUIT,
73	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};
84		192
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	193	fiemap->fm_start = req->offs;
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	194	fiemap->fm_length = req->size;
		195	fiemap->fm_flags = req->int2;
		196	fiemap->fm_extent_count = count;
87		197
88	typedef struct aio_cb	198	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
89	{	199	return;
90	struct aio_cb *volatile next;
91		200
92	SV *data, *callback;	201	if (req->int3 >= 0 /* not autosizing */
93	SV *fh, *fh2;	202	|| !fiemap->fm_mapped_extents /* no more extents */
94	void *dataptr, *data2ptr;	203	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
95	Stat_t *statdata;	204	goto done;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99		205
100	STRLEN dataoffset;	206	/* else we have to loop -
101	int type;	207	* it would be tempting (actually I tried that first) to just query the
102	int fd, fd2;	208	* number of extents needed, but linux often feels like not returning all
103	int errorno;	209	* extents, without telling us it left any out. this complicates
104	mode_t mode; /* open */	210	* this quite a bit.
		211	*/
105		212
106	unsigned char flags;	213	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
107	unsigned char pri;
108		214
109	SV *self; /* the perl counterpart of this request, if any */	215	for (;;)
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01,
115	};
116
117	typedef aio_cb *aio_req;
118	typedef aio_cb *aio_req_ornot;
119
120	enum {
121	PRI_MIN = -4,
122	PRI_MAX = 4,
123
124	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;
134	static int respipe [2];
135
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{	216	{
166	closedir (wrk->dirp);	217	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
167	wrk->dirp = 0;	218	char scratch[3072];
168	}	219	struct fiemap *incmap = (struct fiemap *)scratch;
169		220
170	if (wrk->dbuf)	221	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
171	{	222	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
172	free (wrk->dbuf);	223	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
173	wrk->dbuf = 0;	224	incmap->fm_flags = fiemap->fm_flags;
174	}	225	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
175	}
176		226
177	static void worker_free (worker *wrk)	227	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;	228	return;
224		229
225	--q->size;	230	if (!incmap->fm_mapped_extents)
		231	goto done;
226		232
227	for (pri = NUM_PRI; pri--; )	233	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
228	{	234	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
229	aio_req req = q->qs[pri];	235	errno = ENOMEM;
230
231	if (req)	236	if (!fiemap)
		237	return;
		238
		239	req->ptr1 = fiemap;
		240
		241	for (count = 0; count < incmap->fm_mapped_extents; ++count)
232	{	242	{
233	if (!(q->qs[pri] = req->next))	243	struct fiemap_extent *e = incmap->fm_extents + count;
234	q->qe[pri] = 0;
235		244
236	return req;	245	if (e->fe_logical + e->fe_length >= end_offset)
		246	goto done;
		247
		248	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		249
		250	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		251	goto done;
		252
237	}	253	}
238	}	254	}
239		255
240	abort ();	256	done:
241	}	257	req->result = 0;
242		258
243	static void req_invoke (aio_req req);	259	#else
		260	errno = ENOSYS;
		261	#endif
		262	}
		263
		264	/*****************************************************************************/
		265
		266	enum {
		267	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		268	};
		269
		270	typedef eio_req *aio_req;
		271	typedef eio_req *aio_req_ornot;
		272	typedef eio_wd aio_wd;
		273
		274	static SV *on_next_submit;
		275	static int next_pri = EIO_PRI_DEFAULT;
		276	static int max_outstanding;
		277
		278	static s_epipe respipe;
		279
244	static void req_free (aio_req req);	280	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	281	static void req_cancel (aio_req req);
246		282
		283	static void
		284	want_poll (void)
		285	{
		286	/* write a dummy byte to the pipe so fh becomes ready */
		287	s_epipe_signal (&respipe);
		288	}
		289
		290	static void
		291	done_poll (void)
		292	{
		293	/* read any signals sent by the worker threads */
		294	s_epipe_drain (&respipe);
		295	}
		296
247	/* must be called at most once */	297	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	298	static SV *
		299	req_sv (aio_req req, HV *stash)
249	{	300	{
250	if (!req->self)	301	if (!req->self)
251	{	302	{
252	req->self = (SV *)newHV ();	303	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	305	}
255		306
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	307	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	308	}
258		309
259	static aio_req SvAIO_REQ (SV *sv)	310	static SV *
		311	newSVaio_wd (aio_wd wd)
		312	{
		313	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		314	}
		315
		316	static aio_req
		317	SvAIO_REQ (SV *sv)
260	{	318	{
261	MAGIC *mg;	319	MAGIC *mg;
262		320
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	321	if (!SvROK (sv)
		322	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		323	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		324	&& SvSTASH (SvRV (sv)) != aio_req_stash
		325	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	326	croak ("object of class IO::AIO::REQ expected");
265		327
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	328	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		329
268	return mg ? (aio_req)mg->mg_ptr : 0;	330	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	331	}
270		332
		333	static aio_wd
		334	SvAIO_WD (SV *sv)
		335	{
		336	if (!SvROK (sv)
		337	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		338	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		339	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		340
		341	return (aio_wd)(long)SvIVX (SvRV (sv));
		342	}
		343
		344	static void
271	static void aio_grp_feed (aio_req grp)	345	aio_grp_feed (aio_req grp)
272	{	346	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	347	if (grp->sv2 && SvOK (grp->sv2))
274	{	348	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	349	dSP;
280		350
281	ENTER;	351	ENTER;
282	SAVETMPS;	352	SAVETMPS;
283	PUSHMARK (SP);	353	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	354	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	355	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	356	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	357	SPAGAIN;
288	FREETMPS;	358	FREETMPS;
289	LEAVE;	359	LEAVE;
290	}
291
292	/* stop if no progress has been made */
293	if (old_len == grp->length)
294	{
295	SvREFCNT_dec (grp->fh2);
296	grp->fh2 = 0;
297	break;
298	}
299	}	360	}
300	}	361	}
301		362
302	static void aio_grp_dec (aio_req grp)	363	static void
		364	req_submit (eio_req *req)
303	{	365	{
304	--grp->length;	366	eio_submit (req);
305		367
306	/* call feeder, if applicable */	368	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	369	{
312	req_invoke (grp);	370	dSP;
313	req_free (grp);	371	SV *cb = sv_2mortal (on_next_submit);
		372
		373	on_next_submit = 0;
		374
		375	PUSHMARK (SP);
		376	PUTBACK;
		377	call_sv (cb, G_DISCARD | G_EVAL);
314	}	378	}
315	}	379	}
316		380
317	static void poll_wait ()	381	static int
		382	req_invoke (eio_req *req)
318	{	383	{
319	fd_set rfd;	384	if (req->flags & FLAG_SV2_RO_OFF)
		385	SvREADONLY_off (req->sv2);
320		386
321	while (nreqs)	387	if (!EIO_CANCELLED (req) && req->callback)
322	{	388	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)
343	{
344	dSP;	389	dSP;
345		390	static SV *sv_result_cache; /* caches the result integer SV */
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	391	SV *sv_result;
347	{
348	errno = req->errorno;
349		392
350	ENTER;	393	ENTER;
351	SAVETMPS;	394	SAVETMPS;
352	PUSHMARK (SP);	395	PUSHMARK (SP);
353	EXTEND (SP, 1);	396	EXTEND (SP, 1);
354		397
		398	/* do not recreate the result IV from scratch each time */
		399	if (expect_true (sv_result_cache))
		400	{
		401	sv_result = sv_result_cache; sv_result_cache = 0;
		402	SvIV_set (sv_result, req->result);
		403	SvIOK_only (sv_result);
		404	}
		405	else
		406	{
		407	sv_result = newSViv (req->result);
		408	SvREADONLY_on (sv_result);
		409	}
		410
355	switch (req->type)	411	switch (req->type)
356	{	412	{
		413	case EIO_WD_OPEN:
		414	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		415	break;
		416
357	case REQ_READDIR:	417	case EIO_READDIR:
358	{	418	{
359	SV *rv = &PL_sv_undef;	419	SV *rv = &PL_sv_undef;
360		420
361	if (req->result >= 0)	421	if (req->result >= 0)
362	{	422	{
363	int i;	423	int i;
364	char *buf = req->data2ptr;	424	char *names = (char *)req->ptr2;
		425	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	426	AV *av = newAV ();
366		427
367	av_extend (av, req->result - 1);	428	av_extend (av, req->result - 1);
368		429
369	for (i = 0; i < req->result; ++i)	430	for (i = 0; i < req->result; ++i)
370	{	431	{
371	SV *sv = newSVpv (buf, 0);	432	if (req->int1 & EIO_READDIR_DENTS)
		433	{
		434	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		435
		436	if (req->int1 & EIO_READDIR_CUSTOM2)
		437	{
		438	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		439	AV *avent = newAV ();
		440
		441	av_extend (avent, 2);
		442
		443	if (!sv_type [ent->type])
		444	{
		445	sv_type [ent->type] = newSViv (ent->type);
		446	SvREADONLY_on (sv_type [ent->type]);
		447	}
		448
		449	av_store (avent, 0, namesv);
		450	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		451	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		452
		453	av_store (av, i, newRV_noinc ((SV *)avent));
		454	}
		455	else
373	av_store (av, i, sv);	456	av_store (av, i, namesv);
		457
		458	++ent;
		459	}
		460	else
		461	{
		462	SV *name = newSVpv (names, 0);
		463	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	464	names += SvCUR (name) + 1;
		465	}
375	}	466	}
376		467
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	468	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	469	}
379		470
380	PUSHs (rv);	471	PUSHs (rv);
		472
		473	if (req->int1 & EIO_READDIR_CUSTOM1)
		474	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	475	}
382	break;	476	break;
383		477
384	case REQ_OPEN:	478	case EIO_OPEN:
385	{	479	{
386	/* convert fd to fh */	480	/* convert fd to fh */
387	SV *fh;	481	SV *fh = &PL_sv_undef;
388		482
389	PUSHs (sv_2mortal (newSViv (req->result)));	483	if (req->result >= 0)
390	PUTBACK;	484	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	485	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	486	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		487	char sym [64];
		488	int symlen;
		489
		490	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		491	gv_init (gv, aio_stash, sym, symlen, 0);
393		492
394	fh = SvREFCNT_inc (POPs);	493	symlen = snprintf (
		494	sym,
		495	sizeof (sym),
		496	"%s&=%d",
		497	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		498	(int)req->result
		499	);
395		500
		501	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		502	fh = (SV *)gv;
		503	}
		504
396	PUSHMARK (SP);	505	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	506	}
399	break;	507	break;
400		508
		509	case EIO_STATVFS:
		510	case EIO_FSTATVFS:
		511	{
		512	SV *rv = &PL_sv_undef;
		513
		514	#ifndef _WIN32
		515	if (req->result >= 0)
		516	{
		517	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		518	HV *hv = newHV ();
		519	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		520	* chooses to make it a struct.
		521	*/
		522	unsigned long fsid = 0;
		523	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		524
		525	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		526
		527	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		528	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		529	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		530	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		531	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		532	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		533	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		534	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		535	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		536	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		537	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		538	}
		539	#endif
		540
		541	PUSHs (rv);
		542	}
		543
		544	break;
		545
401	case REQ_GROUP:	546	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	547	req->int1 = 2; /* mark group as finished */
403		548
404	if (req->data)	549	if (req->sv1)
405	{	550	{
406	int i;	551	int i;
407	AV *av = (AV *)req->data;	552	AV *av = (AV *)req->sv1;
408		553
409	EXTEND (SP, AvFILL (av) + 1);	554	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	555	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	556	PUSHs (*av_fetch (av, i, 0));
412	}	557	}
413	break;	558	break;
414		559
415	case REQ_NOP:	560	case EIO_NOP:
416	case REQ_BUSY:	561	case EIO_BUSY:
417	break;	562	break;
418		563
		564	case EIO_READLINK:
		565	case EIO_REALPATH:
		566	if (req->result > 0)
		567	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		568	break;
		569
		570	case EIO_STAT:
		571	case EIO_LSTAT:
		572	case EIO_FSTAT:
		573	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		574
		575	if (!(PL_laststatval = req->result))
		576	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		577	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		578
		579	PUSHs (sv_result);
		580	break;
		581
		582	case EIO_SEEK:
		583	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		584	break;
		585
		586	case EIO_READ:
		587	{
		588	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		589	*SvEND (req->sv2) = 0;
		590	SvPOK_only (req->sv2);
		591	SvSETMAGIC (req->sv2);
		592	PUSHs (sv_result);
		593	}
		594	break;
		595
		596	case EIO_CUSTOM:
		597	if (req->feed == fiemap)
		598	{
		599	#if HAVE_FIEMAP
		600	if (!req->result)
		601	{
		602	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		603
		604	if (fiemap->fm_extent_count)
		605	{
		606	AV *av = newAV ();
		607	int i;
		608
		609	while (fiemap->fm_mapped_extents)
		610	{
		611	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		612	AV *ext_av = newAV ();
		613
		614	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		615	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		616	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		617	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		618
		619	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		620	}
		621
		622	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		623	}
		624	else
		625	{
		626	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		627	PUSHs (sv_result);
		628	}
		629	}
		630	#endif
		631	}
		632	else
		633	PUSHs (sv_result);
		634	break;
		635
		636	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		637	if (req->result > 0)
		638	SvIV_set (sv_result, 0);
		639	/* FALLTHROUGH */
		640
419	default:	641	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	642	PUSHs (sv_result);
421	break;	643	break;
422	}	644	}
423		645
		646	errno = req->errorno;
424		647
425	PUTBACK;	648	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	649	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	650	SPAGAIN;
		651
		652	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		653	SvREFCNT_dec (sv_result);
		654	else
		655	sv_result_cache = sv_result;
428		656
429	FREETMPS;	657	FREETMPS;
430	LEAVE;	658	LEAVE;
		659
		660	PUTBACK;
431	}	661	}
432		662
433	if (req->grp)	663	return !!SvTRUE (ERRSV);
434	{
435	aio_req grp = req->grp;
436
437	/* unlink request */
438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441	if (grp->grp_first == req)
442	grp->grp_first = req->grp_next;
443
444	aio_grp_dec (grp);
445	}
446
447	if (SvTRUE (ERRSV))
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	664	}
453		665
454	static void req_free (aio_req req)	666	static void
		667	req_destroy (aio_req req)
455	{	668	{
456	if (req->self)	669	if (req->self)
457	{	670	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	671	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	672	SvREFCNT_dec (req->self);
460	}	673	}
461		674
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	675	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	676	SvREFCNT_dec (req->sv2);
		677	SvREFCNT_dec (req->sv3);
		678	SvREFCNT_dec (req->sv4);
465	SvREFCNT_dec (req->callback);	679	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467		680
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470
471	Safefree (req);	681	free (req);
472	}	682	}
473		683
		684	static void
474	static void req_cancel_subs (aio_req grp)	685	req_cancel_subs (aio_req grp)
475	{	686	{
476	aio_req sub;
477
478	if (grp->type != REQ_GROUP)	687	if (grp->type != EIO_GROUP)
479	return;	688	return;
480		689
481	SvREFCNT_dec (grp->fh2);	690	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	691	grp->sv2 = 0;
483		692
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	693	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	694	}
487		695
488	static void req_cancel (aio_req req)	696	static void ecb_cold
		697	create_respipe (void)
489	{	698	{
490	req->flags |= FLAG_CANCELLED;	699	if (s_epipe_renew (&respipe))
491		700	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	701	}
494		702
495	static int poll_cb ()	703	static void
		704	poll_wait (void)
496	{	705	{
497	dSP;	706	while (eio_nreqs ())
498	int count = 0;	707	{
499	int do_croak = 0;	708	int size;
500	aio_req req;
501		709
		710	X_LOCK (reslock);
		711	size = res_queue.size;
		712	X_UNLOCK (reslock);
		713
		714	if (size)
		715	return;
		716
		717	etp_maybe_start_thread ();
		718
		719	s_epipe_wait (&respipe);
		720	}
		721	}
		722
		723	static int
		724	poll_cb (void)
		725	{
502	for (;;)	726	for (;;)
503	{	727	{
504	LOCK (reslock);	728	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		729
507	if (req)	730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding || max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		753	# define munmap(addr,length) EIO_ENOSYS ()
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		758	# define PROT_NONE 0
		759	# define PROT_WRITE 0
		760	# define MAP_PRIVATE 0
		761	# define MAP_SHARED 0
		762	# define MAP_FIXED 0
		763	#endif
		764
		765	#define MMAP_MAGIC PERL_MAGIC_ext
		766
		767	static int ecb_cold
		768	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		769	{
		770	int old_errno = errno;
		771	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		772	errno = old_errno;
		773
		774	mg->mg_obj = 0; /* just in case */
		775
		776	SvREADONLY_off (sv);
		777
		778	if (SvPVX (sv) != mg->mg_ptr)
		779	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		780
		781	SvCUR_set (sv, 0);
		782	SvPVX (sv) = 0;
		783	SvOK_off (sv);
		784
		785	return 0;
		786	}
		787
		788	static MGVTBL mmap_vtbl = {
		789	0, 0, 0, 0, mmap_free
		790	};
		791
		792	/*****************************************************************************/
		793
		794	static SV *
		795	get_cb (SV *cb_sv)
		796	{
		797	SvGETMAGIC (cb_sv);
		798	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		799	}
		800
		801	static aio_req ecb_noinline
		802	dreq (SV *callback)
		803	{
		804	SV *cb_cv;
		805	aio_req req;
		806	int req_pri = next_pri;
		807	next_pri = EIO_PRI_DEFAULT;
		808
		809	cb_cv = get_cb (callback);
		810
		811	req = calloc (sizeof (*req), 1);
		812	if (!req)
		813	croak ("out of memory during eio_req allocation");
		814
		815	req->callback = SvREFCNT_inc (cb_cv);
		816	req->pri = req_pri;
		817
		818	return req;
		819	}
		820
		821	#define dREQ \
		822	aio_req req = dreq (callback); \
		823
		824	#define REQ_SEND \
		825	PUTBACK; \
		826	req_submit (req); \
		827	SPAGAIN; \
		828	\
		829	if (GIMME_V != G_VOID) \
		830	XPUSHs (req_sv (req, aio_req_stash));
		831
		832	ecb_inline void
		833	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		834	{
		835	if (expect_false (SvROK (path)))
		836	{
		837	SV *rv = SvRV (path);
		838	SV *wdob;
		839
		840	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
508	{	841	{
509	if (!res_queue.size)	842	path = AvARRAY (rv)[1];
		843	wdob = AvARRAY (rv)[0];
		844
		845	if (SvOK (wdob))
510	{	846	{
511	/* read any signals sent by the worker threads */	847	*wd = SvAIO_WD (wdob);
512	char buf [32];	848	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}	849	}
		850	else
		851	*wd = EIO_INVALID_WD;
516	}	852	}
517		853	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
518	UNLOCK (reslock);
519
520	if (!req)
521	break;
522
523	--nreqs;
524
525	if (req->type == REQ_QUIT)
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{	854	{
529	req->fd = 1; /* mark request as delayed */	855	*wd = (aio_wd)(long)SvIVX (rv);
530	continue;	856	*wdsv = SvREFCNT_inc_NN (rv);
		857	*ptr = ".";
		858	return; /* path set to "." */
531	}	859	}
532	else	860	else
533	{	861	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	862	}
554		863
555	return count;	864	*pathsv = newSVsv (path);
		865	*ptr = SvPVbyte_nolen (*pathsv);
556	}	866	}
557		867
558	static void *aio_proc(void *arg);	868	static void ecb_noinline
559		869	req_set_path1 (aio_req req, SV *path)
560	static void start_thread (void)
561	{	870	{
562	sigset_t fullsigset, oldsigset;	871	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
563	pthread_attr_t attr;	872	}
564		873
565	worker *wrk = calloc (1, sizeof (worker));	874	static void ecb_noinline
		875	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		876	{
		877	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
566		878
567	if (!wrk)	879	switch (SvTYPE (rv))
568	croak ("unable to allocate worker thread data");
569
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580	{	880	{
581	wrk->prev = &wrk_first;	881	case SVt_PVIO:
582	wrk->next = wrk_first.next;	882	case SVt_PVLV:
583	wrk_first.next->prev = wrk;	883	case SVt_PVGV:
584	wrk_first.next = wrk;	884	req->type = type_fh;
585	started++;	885	req->sv1 = newSVsv (fh_or_path);
		886	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		887	break;
		888
		889	default:
		890	req->type = type_path;
		891	req_set_path1 (req, fh_or_path);
		892	break;
586	}	893	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}	894	}
593		895
594	static void req_send (aio_req req)	896	XS(boot_IO__AIO) ecb_cold;
595	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598		897
599	++nreqs;	898	MODULE = IO::AIO PACKAGE = IO::AIO
600		899
601	LOCK (reqlock);	900	PROTOTYPES: ENABLE
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605		901
606	if (nreqs > max_outstanding)	902	BOOT:
607	for (;;)
608	{
609	poll_cb ();
610
611	if (nreqs <= max_outstanding)
612	break;
613
614	poll_wait ();
615	}
616	}
617
618	static void end_thread (void)
619	{	903	{
620	aio_req req;	904	static const struct {
		905	const char *name;
		906	IV iv;
		907	} *civ, const_iv[] = {
		908	# define const_niv(name, value) { # name, (IV) value },
		909	# define const_iv(name) { # name, (IV) name },
		910	# define const_eio(name) { # name, (IV) EIO_ ## name },
621		911
622	Newz (0, req, 1, aio_cb);	912	/* you have to re-run ./gendef0 after adding/Removing any constants here */
623		913
624	req->type = REQ_QUIT;	914	const_iv (ENOSYS)
625	req->pri = PRI_MAX + PRI_BIAS;	915	const_iv (EXDEV)
		916	const_iv (EBADR)
626		917
627	req_send (req);	918	const_iv (O_RDONLY)
628	}	919	const_iv (O_WRONLY)
		920	const_iv (O_RDWR)
		921	const_iv (O_CREAT)
		922	const_iv (O_TRUNC)
		923	const_iv (O_EXCL)
		924	const_iv (O_APPEND)
629		925
630	static void min_parallel (int nthreads)	926	const_iv (O_ASYNC)
631	{	927	const_iv (O_DIRECT)
632	if (wanted < nthreads)	928	const_iv (O_NOATIME)
633	wanted = nthreads;
634	}
635		929
636	static void max_parallel (int nthreads)	930	const_iv (O_CLOEXEC)
637	{	931	const_iv (O_NOCTTY)
638	int cur = started;	932	const_iv (O_NOFOLLOW)
		933	const_iv (O_NONBLOCK)
		934	const_iv (O_EXEC)
		935	const_iv (O_SEARCH)
		936	const_iv (O_DIRECTORY)
		937	const_iv (O_DSYNC)
		938	const_iv (O_RSYNC)
		939	const_iv (O_SYNC)
		940	const_iv (O_TTY_INIT)
639		941
640	if (wanted > nthreads)	942	const_iv (S_IFIFO)
641	wanted = nthreads;	943	const_iv (S_IFCHR)
		944	const_iv (S_IFBLK)
		945	const_iv (S_IFLNK)
		946	const_iv (S_IFREG)
		947	const_iv (S_IFDIR)
		948	const_iv (S_IFWHT)
		949	const_iv (S_IFSOCK)
		950	const_iv (S_IFMT)
642		951
643	while (cur > wanted)	952	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
644	{	953	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
645	end_thread ();	954	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
646	cur--;	955	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
647	}	956	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		957	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
648		958
649	while (started > wanted)	959	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
650	{	960	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
651	poll_wait ();	961	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
652	poll_cb ();	962	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
653	}	963	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
654	}
655		964
656	static void create_pipe ()	965	const_iv (ST_RDONLY)
657	{	966	const_iv (ST_NOSUID)
658	if (pipe (respipe))	967	const_iv (ST_NODEV)
659	croak ("unable to initialize result pipe");	968	const_iv (ST_NOEXEC)
		969	const_iv (ST_SYNCHRONOUS)
		970	const_iv (ST_MANDLOCK)
		971	const_iv (ST_WRITE)
		972	const_iv (ST_APPEND)
		973	const_iv (ST_IMMUTABLE)
		974	const_iv (ST_NOATIME)
		975	const_iv (ST_NODIRATIME)
		976	const_iv (ST_RELATIME)
660		977
661	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	978	const_iv (PROT_NONE)
662	croak ("cannot set result pipe to nonblocking mode");	979	const_iv (PROT_EXEC)
		980	const_iv (PROT_READ)
		981	const_iv (PROT_WRITE)
663		982
664	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	983	/*const_iv (MAP_FIXED)*/
665	croak ("cannot set result pipe to nonblocking mode");	984	const_iv (MAP_PRIVATE)
666	}	985	const_iv (MAP_SHARED)
		986	const_iv (MAP_ANONYMOUS)
667		987
668	/*****************************************************************************/	988	/* linuxish */
669	/* work around various missing functions */	989	const_iv (MAP_HUGETLB)
		990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
670		994
671	#if !HAVE_PREADWRITE	995	const_iv (FIEMAP_FLAG_SYNC)
672	# define pread aio_pread	996	const_iv (FIEMAP_FLAG_XATTR)
673	# define pwrite aio_pwrite	997	const_iv (FIEMAP_FLAGS_COMPAT)
		998	const_iv (FIEMAP_EXTENT_LAST)
		999	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1000	const_iv (FIEMAP_EXTENT_DELALLOC)
		1001	const_iv (FIEMAP_EXTENT_ENCODED)
		1002	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1003	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1004	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1005	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1006	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1007	const_iv (FIEMAP_EXTENT_MERGED)
		1008	const_iv (FIEMAP_EXTENT_SHARED)
674		1009
675	/*	1010	const_iv (SPLICE_F_MOVE)
676	* make our pread/pwrite safe against themselves, but not against	1011	const_iv (SPLICE_F_NONBLOCK)
677	* normal read/write by using a mutex. slows down execution a lot,	1012	const_iv (SPLICE_F_MORE)
678	* but that's your problem, not mine.	1013	const_iv (SPLICE_F_GIFT)
679	*/
680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
681		1014
682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1015	const_iv (SEEK_DATA)
683	{	1016	const_iv (SEEK_HOLE)
684	ssize_t res;
685	off_t ooffset;
686		1017
687	LOCK (preadwritelock);	1018	/* libeio constants */
688	ooffset = lseek (fd, 0, SEEK_CUR);	1019	const_eio (SEEK_SET)
689	lseek (fd, offset, SEEK_SET);	1020	const_eio (SEEK_CUR)
690	res = read (fd, buf, count);	1021	const_eio (SEEK_END)
691	lseek (fd, ooffset, SEEK_SET);
692	UNLOCK (preadwritelock);
693		1022
694	return res;	1023	const_eio (MCL_FUTURE)
695	}	1024	const_eio (MCL_CURRENT)
696		1025
697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1026	const_eio (MS_ASYNC)
698	{	1027	const_eio (MS_INVALIDATE)
699	ssize_t res;	1028	const_eio (MS_SYNC)
700	off_t ooffset;
701		1029
702	LOCK (preadwritelock);	1030	const_eio (MT_MODIFY)
703	ooffset = lseek (fd, 0, SEEK_CUR);
704	lseek (fd, offset, SEEK_SET);
705	res = write (fd, buf, count);
706	lseek (fd, offset, SEEK_SET);
707	UNLOCK (preadwritelock);
708		1031
709	return res;	1032	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
710	}	1033	const_eio (SYNC_FILE_RANGE_WRITE)
711	#endif	1034	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
712		1035
713	#if !HAVE_FDATASYNC	1036	const_eio (FALLOC_FL_KEEP_SIZE)
714	# define fdatasync fsync	1037	const_eio (FALLOC_FL_PUNCH_HOLE)
715	#endif	1038	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1039	const_eio (FALLOC_FL_ZERO_RANGE)
716		1040
717	#if !HAVE_READAHEAD	1041	const_eio (READDIR_DENTS)
718	# define readahead aio_readahead	1042	const_eio (READDIR_DIRS_FIRST)
		1043	const_eio (READDIR_STAT_ORDER)
		1044	const_eio (READDIR_FOUND_UNKNOWN)
719		1045
720	static ssize_t readahead (int fd, off_t offset, size_t count)	1046	const_eio (DT_UNKNOWN)
721	{	1047	const_eio (DT_FIFO)
722	dBUF;	1048	const_eio (DT_CHR)
723		1049	const_eio (DT_DIR)
724	while (count > 0)	1050	const_eio (DT_BLK)
725	{	1051	const_eio (DT_REG)
726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	1052	const_eio (DT_LNK)
727		1053	const_eio (DT_SOCK)
728	pread (fd, aio_buf, len, offset);	1054	const_eio (DT_WHT)
729	offset += len;
730	count -= len;
731	}
732
733	errno = 0;
734	}
735	#endif
736
737	#if !HAVE_READDIR_R
738	# define readdir_r aio_readdir_r
739
740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
741
742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
743	{
744	struct dirent *e;
745	int errorno;
746
747	LOCK (readdirlock);
748
749	e = readdir (dirp);
750	errorno = errno;
751
752	if (e)
753	{
754	*res = ent;
755	strcpy (ent->d_name, e->d_name);
756	}
757	else
758	*res = 0;
759
760	UNLOCK (readdirlock);
761
762	errno = errorno;
763	return e ? 0 : -1;
764	}
765	#endif
766
767	/* sendfile always needs emulation */
768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
769	{
770	ssize_t res;
771
772	if (!count)
773	return 0;
774
775	#if HAVE_SENDFILE
776	# if __linux
777	res = sendfile (ofd, ifd, &offset, count);
778
779	# elif __freebsd
780	/*
781	* Of course, the freebsd sendfile is a dire hack with no thoughts
782	* wasted on making it similar to other I/O functions.
783	*/
784	{
785	off_t sbytes;
786	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
787
788	if (res < 0 && sbytes)
789	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
790	res = sbytes;
791	}	1055	};
792		1056
793	# elif __hpux	1057	aio_stash = gv_stashpv ("IO::AIO" , 1);
794	res = sendfile (ofd, ifd, offset, count, 0, 0);	1058	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1059	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1060	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
795		1061
796	# elif __solaris	1062	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
797	{	1063	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
798	struct sendfilevec vec;
799	size_t sbytes;
800		1064
801	vec.sfv_fd = ifd;	1065	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
802	vec.sfv_flag = 0;
803	vec.sfv_off = offset;
804	vec.sfv_len = count;
805		1066
806	res = sendfilev (ofd, &vec, 1, &sbytes);	1067	reinit ();
		1068	}
807		1069
808	if (res < 0 && sbytes)	1070	void
		1071	reinit ()
		1072	PROTOTYPE:
		1073
		1074	void
		1075	max_poll_reqs (unsigned int nreqs)
		1076	PROTOTYPE: $
		1077	CODE:
		1078	eio_set_max_poll_reqs (nreqs);
		1079
		1080	void
		1081	max_poll_time (double nseconds)
		1082	PROTOTYPE: $
		1083	CODE:
		1084	eio_set_max_poll_time (nseconds);
		1085
		1086	void
		1087	min_parallel (unsigned int nthreads)
		1088	PROTOTYPE: $
		1089	CODE:
		1090	eio_set_min_parallel (nthreads);
		1091
		1092	void
		1093	max_parallel (unsigned int nthreads)
		1094	PROTOTYPE: $
		1095	CODE:
		1096	eio_set_max_parallel (nthreads);
		1097
		1098	void
		1099	max_idle (unsigned int nthreads)
		1100	PROTOTYPE: $
		1101	CODE:
		1102	eio_set_max_idle (nthreads);
		1103
		1104	void
		1105	idle_timeout (unsigned int seconds)
		1106	PROTOTYPE: $
		1107	CODE:
		1108	eio_set_idle_timeout (seconds);
		1109
		1110	void
		1111	max_outstanding (unsigned int maxreqs)
		1112	PROTOTYPE: $
		1113	CODE:
		1114	max_outstanding = maxreqs;
		1115
		1116	void
		1117	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1118	PPCODE:
		1119	{
		1120	dREQ;
		1121
		1122	req->type = EIO_WD_OPEN;
		1123	req_set_path1 (req, pathname);
		1124
		1125	REQ_SEND;
		1126	}
		1127
		1128	void
		1129	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1130	PPCODE:
		1131	{
		1132	dREQ;
		1133
		1134	req->type = EIO_OPEN;
		1135	req_set_path1 (req, pathname);
		1136	req->int1 = flags;
		1137	req->int2 = mode;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
		1143	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1144	ALIAS:
		1145	aio_fsync = EIO_FSYNC
		1146	aio_fdatasync = EIO_FDATASYNC
		1147	aio_syncfs = EIO_SYNCFS
		1148	PPCODE:
		1149	{
		1150	int fd = s_fileno_croak (fh, 0);
		1151	dREQ;
		1152
		1153	req->type = ix;
		1154	req->sv1 = newSVsv (fh);
		1155	req->int1 = fd;
		1156
		1157	REQ_SEND;
		1158	}
		1159
		1160	void
		1161	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1162	PPCODE:
		1163	{
		1164	int fd = s_fileno_croak (fh, 0);
		1165	dREQ;
		1166
		1167	req->type = EIO_SYNC_FILE_RANGE;
		1168	req->sv1 = newSVsv (fh);
		1169	req->int1 = fd;
		1170	req->offs = offset;
809	res = sbytes;	1171	req->size = nbytes;
810	}	1172	req->int2 = flags;
811		1173
812	# endif	1174	REQ_SEND;
		1175	}
		1176
		1177	void
		1178	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1179	PPCODE:
		1180	{
		1181	int fd = s_fileno_croak (fh, 0);
		1182	dREQ;
		1183
		1184	req->type = EIO_FALLOCATE;
		1185	req->sv1 = newSVsv (fh);
		1186	req->int1 = fd;
		1187	req->int2 = mode;
		1188	req->offs = offset;
		1189	req->size = len;
		1190
		1191	REQ_SEND;
		1192	}
		1193
		1194	void
		1195	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1196	PPCODE:
		1197	{
		1198	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1199	int fd = s_fileno_croak (fh, 0);
		1200	dREQ;
		1201
		1202	if (expect_false (close_fd < 0))
		1203	{
		1204	int pipefd [2];
		1205
		1206	if (
		1207	#ifdef _WIN32
		1208	_pipe (pipefd, 1, _O_BINARY) < 0
813	#else	1209	#else
814	res = -1;	1210	pipe (pipefd) < 0
815	errno = ENOSYS;	1211	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
816	#endif	1212	#endif
817		1213	|| close (pipefd [1]) < 0
818	if (res < 0
819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
820	#if __solaris
821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
822	#endif
823	)
824	)
825	{
826	/* emulate sendfile. this is a major pain in the ass */
827	dBUF;
828
829	res = 0;
830
831	while (count)
832	{
833	ssize_t cnt;
834
835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
836
837	if (cnt <= 0)
838	{	1214	)
839	if (cnt && !res) res = -1;	1215	abort (); /*D*/
840	break;
841	}
842		1216
843	cnt = write (ofd, aio_buf, cnt);	1217	close_fd = pipefd [0];
844
845	if (cnt <= 0)
846	{
847	if (cnt && !res) res = -1;
848	break;
849	}
850
851	offset += cnt;
852	res += cnt;
853	count -= cnt;
854	}
855	}
856
857	return res;
858	}
859
860	/* read a full directory */
861	static void scandir_ (aio_req req, worker *self)
862	{
863	DIR *dirp;
864	union
865	{
866	struct dirent d;
867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
868	} *u;
869	struct dirent *entp;
870	char *name, *names;
871	int memlen = 4096;
872	int memofs = 0;
873	int res = 0;
874	int errorno;
875
876	LOCK (wrklock);
877	self->dirp = dirp = opendir (req->dataptr);
878	self->dbuf = u = malloc (sizeof (*u));
879	UNLOCK (wrklock);
880
881	req->data2ptr = names = malloc (memlen);
882
883	if (dirp && u && names)
884	for (;;)
885	{
886	errno = 0;
887	readdir_r (dirp, &u->d, &entp);
888
889	if (!entp)
890	break;
891
892	name = entp->d_name;
893
894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
895	{
896	int len = strlen (name) + 1;
897
898	res++;
899
900	while (memofs + len > memlen)
901	{
902	memlen *= 2;
903	LOCK (wrklock);
904	req->data2ptr = names = realloc (names, memlen);
905	UNLOCK (wrklock);
906
907	if (!names)
908	break;
909	}
910
911	memcpy (names + memofs, name, len);
912	memofs += len;
913	}	1218	}
914	}
915		1219
916	if (errno)	1220	req->type = EIO_DUP2;
917	res = -1;	1221	req->int1 = close_fd;
918		1222	req->sv2 = newSVsv (fh);
919	req->result = res;	1223	req->int2 = fd;
920	}
921		1224
922	/*****************************************************************************/	1225	REQ_SEND;
923
924	static void *aio_proc (void *thr_arg)
925	{
926	aio_req req;
927	int type;
928	worker *self = (worker *)thr_arg;
929
930	do
931	{
932	LOCK (reqlock);
933
934	for (;;)
935	{
936	self->req = req = reqq_shift (&req_queue);
937
938	if (req)
939	break;
940
941	pthread_cond_wait (&reqwait, &reqlock);
942	}
943
944	UNLOCK (reqlock);
945
946	errno = 0; /* strictly unnecessary */
947	type = req->type; /* remember type for QUIT check */
948
949	if (!(req->flags & FLAG_CANCELLED))
950	switch (type)
951	{
952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
954
955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
957
958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
961
962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
963	case REQ_CLOSE: req->result = close (req->fd); break;
964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
969
970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
971	case REQ_FSYNC: req->result = fsync (req->fd); break;
972	case REQ_READDIR: scandir_ (req, self); break;
973
974	case REQ_BUSY:
975	{
976	struct timeval tv;
977
978	tv.tv_sec = req->fd;
979	tv.tv_usec = req->fd2;
980
981	req->result = select (0, 0, 0, 0, &tv);
982	}
983
984	case REQ_GROUP:
985	case REQ_NOP:
986	case REQ_QUIT:
987	break;
988
989	default:
990	req->result = ENOSYS;
991	break;
992	}
993
994	req->errorno = errno;
995
996	LOCK (reslock);
997
998	if (!reqq_push (&res_queue, req))
999	/* write a dummy byte to the pipe so fh becomes ready */
1000	write (respipe [1], &respipe, 1);
1001
1002	self->req = 0;
1003	worker_clear (self);
1004
1005	UNLOCK (reslock);
1006	}
1007	while (type != REQ_QUIT);
1008
1009	LOCK (wrklock);
1010	worker_free (self);
1011	UNLOCK (wrklock);
1012
1013	return 0;
1014	}	1226	}
1015		1227
1016	/*****************************************************************************/
1017
1018	static void atfork_prepare (void)
1019	{
1020	LOCK (wrklock);
1021	LOCK (reqlock);
1022	LOCK (reslock);
1023	#if !HAVE_PREADWRITE
1024	LOCK (preadwritelock);
1025	#endif
1026	#if !HAVE_READDIR_R
1027	LOCK (readdirlock);
1028	#endif
1029	}
1030
1031	static void atfork_parent (void)
1032	{
1033	#if !HAVE_READDIR_R
1034	UNLOCK (readdirlock);
1035	#endif
1036	#if !HAVE_PREADWRITE
1037	UNLOCK (preadwritelock);
1038	#endif
1039	UNLOCK (reslock);
1040	UNLOCK (reqlock);
1041	UNLOCK (wrklock);
1042	}
1043
1044	static void atfork_child (void)
1045	{
1046	aio_req prv;
1047
1048	while (prv = reqq_shift (&req_queue))
1049	req_free (prv);
1050
1051	while (prv = reqq_shift (&res_queue))
1052	req_free (prv);
1053
1054	while (wrk_first.next != &wrk_first)
1055	{
1056	worker *wrk = wrk_first.next;
1057
1058	if (wrk->req)
1059	req_free (wrk->req);
1060
1061	worker_clear (wrk);
1062	worker_free (wrk);
1063	}
1064
1065	started = 0;
1066	nreqs = 0;
1067
1068	close (respipe [0]);
1069	close (respipe [1]);
1070	create_pipe ();
1071
1072	atfork_parent ();
1073	}
1074
1075	#define dREQ \
1076	aio_req req; \
1077	int req_pri = next_pri; \
1078	next_pri = DEFAULT_PRI + PRI_BIAS; \
1079	\
1080	if (SvOK (callback) && !SvROK (callback)) \
1081	croak ("callback must be undef or of reference type"); \
1082	\
1083	Newz (0, req, 1, aio_cb); \
1084	if (!req) \
1085	croak ("out of memory during aio_req allocation"); \
1086	\
1087	req->callback = newSVsv (callback); \
1088	req->pri = req_pri
1089
1090	#define REQ_SEND \
1091	req_send (req); \
1092	\
1093	if (GIMME_V != G_VOID) \
1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1095
1096	MODULE = IO::AIO PACKAGE = IO::AIO
1097
1098	PROTOTYPES: ENABLE
1099
1100	BOOT:
1101	{
1102	HV *stash = gv_stashpv ("IO::AIO", 1);
1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1106
1107	create_pipe ();
1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1109	}
1110
1111	void	1228	void
1112	min_parallel (nthreads)	1229	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1113	int nthreads
1114	PROTOTYPE: $
1115
1116	void
1117	max_parallel (nthreads)
1118	int nthreads
1119	PROTOTYPE: $
1120
1121	int
1122	max_outstanding (nreqs)
1123	int nreqs
1124	PROTOTYPE: $
1125	CODE:	1230	PPCODE:
1126	RETVAL = max_outstanding;
1127	max_outstanding = nreqs;
1128
1129	void
1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1131	SV * pathname
1132	int flags
1133	int mode
1134	SV * callback
1135	PROTOTYPE: $$$;$
1136	PPCODE:
1137	{	1231	{
		1232	int fd = s_fileno_croak (fh, 0);
1138	dREQ;	1233	dREQ;
1139		1234
1140	req->type = REQ_OPEN;	1235	req->type = EIO_SEEK;
1141	req->data = newSVsv (pathname);	1236	req->sv1 = newSVsv (fh);
1142	req->dataptr = SvPVbyte_nolen (req->data);	1237	req->int1 = fd;
1143	req->fd = flags;	1238	req->offs = SvVAL64 (offset);
1144	req->mode = mode;	1239	req->int2 = whence;
1145		1240
1146	REQ_SEND;	1241	REQ_SEND;
1147	}	1242	}
1148		1243
1149	void	1244	void
1150	aio_close (fh,callback=&PL_sv_undef)	1245	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1151	SV * fh
1152	SV * callback
1153	PROTOTYPE: $;$
1154	ALIAS:	1246	ALIAS:
1155	aio_close = REQ_CLOSE
1156	aio_fsync = REQ_FSYNC
1157	aio_fdatasync = REQ_FDATASYNC
1158	PPCODE:
1159	{
1160	dREQ;
1161
1162	req->type = ix;
1163	req->fh = newSVsv (fh);
1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1165
1166	REQ_SEND (req);
1167	}
1168
1169	void
1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1171	SV * fh
1172	UV offset
1173	UV length
1174	SV * data
1175	UV dataoffset
1176	SV * callback
1177	ALIAS:
1178	aio_read = REQ_READ	1247	aio_read = EIO_READ
1179	aio_write = REQ_WRITE	1248	aio_write = EIO_WRITE
1180	PROTOTYPE: $$$$$;$
1181	PPCODE:	1249	PPCODE:
1182	{	1250	{
1183	aio_req req;
1184	STRLEN svlen;	1251	STRLEN svlen;
		1252	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1185	char *svptr = SvPVbyte (data, svlen);	1253	char *svptr = SvPVbyte (data, svlen);
1186		1254	UV len = SvUV (length);
1187	SvUPGRADE (data, SVt_PV);
1188	SvPOK_on (data);
1189		1255
1190	if (dataoffset < 0)	1256	if (dataoffset < 0)
1191	dataoffset += svlen;	1257	dataoffset += svlen;
1192		1258
1193	if (dataoffset < 0 || dataoffset > svlen)	1259	if (dataoffset < 0 || dataoffset > svlen)
1194	croak ("data offset outside of string");	1260	croak ("dataoffset outside of data scalar");
1195		1261
1196	if (ix == REQ_WRITE)	1262	if (ix == EIO_WRITE)
1197	{	1263	{
1198	/* write: check length and adjust. */	1264	/* write: check length and adjust. */
1199	if (length < 0 || length + dataoffset > svlen)	1265	if (!SvOK (length) || len + dataoffset > svlen)
1200	length = svlen - dataoffset;	1266	len = svlen - dataoffset;
1201	}	1267	}
1202	else	1268	else
1203	{	1269	{
1204	/* read: grow scalar as necessary */	1270	/* read: check type and grow scalar as necessary */
		1271	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1205	svptr = SvGROW (data, length + dataoffset);	1272	svptr = sv_grow (data, len + dataoffset + 1);
		1273	else if (SvCUR (data) < len + dataoffset)
		1274	croak ("length + dataoffset outside of scalar, and cannot grow");
1206	}	1275	}
1207
1208	if (length < 0)
1209	croak ("length must not be negative");
1210		1276
1211	{	1277	{
1212	dREQ;	1278	dREQ;
1213		1279
1214	req->type = ix;	1280	req->type = ix;
1215	req->fh = newSVsv (fh);	1281	req->sv1 = newSVsv (fh);
1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1282	req->int1 = fd;
1217	: IoOFP (sv_2io (fh)));	1283	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218	req->offset = offset;	1284	req->size = len;
1219	req->length = length;
1220	req->data = SvREFCNT_inc (data);	1285	req->sv2 = SvREFCNT_inc (data);
1221	req->dataptr = (char *)svptr + dataoffset;	1286	req->ptr2 = (char *)svptr + dataoffset;
		1287	req->stroffset = dataoffset;
1222		1288
1223	if (!SvREADONLY (data))	1289	if (!SvREADONLY (data))
1224	{	1290	{
1225	SvREADONLY_on (data);	1291	SvREADONLY_on (data);
1226	req->data2ptr = (void *)data;	1292	req->flags |= FLAG_SV2_RO_OFF;
1227	}	1293	}
1228		1294
1229	REQ_SEND;	1295	REQ_SEND;
1230	}	1296	}
1231	}	1297	}
1232		1298
1233	void	1299	void
1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1300	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1235	SV * out_fh	1301	ALIAS:
1236	SV * in_fh	1302	aio_readlink = EIO_READLINK
1237	UV in_offset	1303	aio_realpath = EIO_REALPATH
1238	UV length
1239	SV * callback
1240	PROTOTYPE: $$$$;$
1241	PPCODE:	1304	PPCODE:
1242	{	1305	{
		1306	dREQ;
		1307
		1308	req->type = ix;
		1309	req_set_path1 (req, pathname);
		1310
		1311	REQ_SEND;
		1312	}
		1313
		1314	void
		1315	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1316	PPCODE:
		1317	{
		1318	int ifd = s_fileno_croak (in_fh , 0);
		1319	int ofd = s_fileno_croak (out_fh, 1);
1243	dREQ;	1320	dREQ;
1244		1321
1245	req->type = REQ_SENDFILE;	1322	req->type = EIO_SENDFILE;
1246	req->fh = newSVsv (out_fh);	1323	req->sv1 = newSVsv (out_fh);
1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1324	req->int1 = ofd;
1248	req->fh2 = newSVsv (in_fh);	1325	req->sv2 = newSVsv (in_fh);
1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1326	req->int2 = ifd;
1250	req->offset = in_offset;	1327	req->offs = in_offset;
1251	req->length = length;	1328	req->size = length;
1252		1329
1253	REQ_SEND;	1330	REQ_SEND;
1254	}	1331	}
1255		1332
1256	void	1333	void
1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1334	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1258	SV * fh
1259	UV offset
1260	IV length
1261	SV * callback
1262	PROTOTYPE: $$$;$
1263	PPCODE:	1335	PPCODE:
1264	{	1336	{
		1337	int fd = s_fileno_croak (fh, 0);
1265	dREQ;	1338	dREQ;
1266		1339
1267	req->type = REQ_READAHEAD;	1340	req->type = EIO_READAHEAD;
1268	req->fh = newSVsv (fh);	1341	req->sv1 = newSVsv (fh);
1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1342	req->int1 = fd;
1270	req->offset = offset;	1343	req->offs = offset;
1271	req->length = length;	1344	req->size = length;
1272		1345
1273	REQ_SEND;	1346	REQ_SEND;
1274	}	1347	}
1275		1348
1276	void	1349	void
1277	aio_stat (fh_or_path,callback=&PL_sv_undef)	1350	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1278	SV * fh_or_path
1279	SV * callback
1280	ALIAS:	1351	ALIAS:
1281	aio_stat = REQ_STAT	1352	aio_stat = EIO_STAT
1282	aio_lstat = REQ_LSTAT	1353	aio_lstat = EIO_LSTAT
		1354	aio_statvfs = EIO_STATVFS
1283	PPCODE:	1355	PPCODE:
1284	{	1356	{
1285	dREQ;	1357	dREQ;
1286		1358
1287	New (0, req->statdata, 1, Stat_t);	1359	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1288	if (!req->statdata)
1289	{
1290	req_free (req);
1291	croak ("out of memory during aio_req->statdata allocation");
1292	}
1293
1294	if (SvPOK (fh_or_path))
1295	{
1296	req->type = ix;
1297	req->data = newSVsv (fh_or_path);
1298	req->dataptr = SvPVbyte_nolen (req->data);
1299	}
1300	else
1301	{
1302	req->type = REQ_FSTAT;
1303	req->fh = newSVsv (fh_or_path);
1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1305	}
1306		1360
1307	REQ_SEND;	1361	REQ_SEND;
1308	}	1362	}
1309		1363
		1364	UV
		1365	major (UV dev)
		1366	ALIAS:
		1367	minor = 1
		1368	CODE:
		1369	RETVAL = ix ? major (dev) : minor (dev);
		1370	OUTPUT:
		1371	RETVAL
		1372
		1373	UV
		1374	makedev (UV maj, UV min)
		1375	CODE:
		1376	RETVAL = makedev (maj, min);
		1377	OUTPUT:
		1378	RETVAL
		1379
1310	void	1380	void
		1381	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1382	PPCODE:
		1383	{
		1384	dREQ;
		1385
		1386	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1387	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1388	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1400	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	void
		1406	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1407	PPCODE:
		1408	{
		1409	dREQ;
		1410
		1411	req->int2 = mode;
		1412	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1413
		1414	REQ_SEND;
		1415	}
		1416
		1417	void
		1418	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1419	PPCODE:
		1420	{
		1421	dREQ;
		1422
		1423	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1424	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1425	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1426
		1427	REQ_SEND;
		1428	}
		1429
		1430	void
		1431	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1432	PPCODE:
		1433	{
		1434	dREQ;
		1435
		1436	req->type = EIO_READDIR;
		1437	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1438
		1439	if (flags & EIO_READDIR_DENTS)
		1440	req->int1 |= EIO_READDIR_CUSTOM2;
		1441
		1442	req_set_path1 (req, pathname);
		1443
		1444	REQ_SEND;
		1445	}
		1446
		1447	void
		1448	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
		1453	req->type = EIO_MKDIR;
		1454	req->int2 = mode;
		1455	req_set_path1 (req, pathname);
		1456
		1457	REQ_SEND;
		1458	}
		1459
		1460	void
1311	aio_unlink (pathname,callback=&PL_sv_undef)	1461	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1312	SV * pathname
1313	SV * callback
1314	ALIAS:	1462	ALIAS:
1315	aio_unlink = REQ_UNLINK	1463	aio_unlink = EIO_UNLINK
1316	aio_rmdir = REQ_RMDIR	1464	aio_rmdir = EIO_RMDIR
1317	aio_readdir = REQ_READDIR	1465	aio_readdir = EIO_READDIR
1318	PPCODE:	1466	PPCODE:
1319	{	1467	{
1320	dREQ;	1468	dREQ;
1321		1469
1322	req->type = ix;	1470	req->type = ix;
1323	req->data = newSVsv (pathname);	1471	req_set_path1 (req, pathname);
1324	req->dataptr = SvPVbyte_nolen (req->data);	1472
1325
1326	REQ_SEND;	1473	REQ_SEND;
1327	}	1474	}
1328		1475
1329	void	1476	void
1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1477	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1331	SV * oldpath
1332	SV * newpath
1333	SV * callback
1334	ALIAS:	1478	ALIAS:
1335	aio_link = REQ_LINK	1479	aio_link = EIO_LINK
1336	aio_symlink = REQ_SYMLINK	1480	aio_symlink = EIO_SYMLINK
1337	aio_rename = REQ_RENAME	1481	aio_rename = EIO_RENAME
1338	PPCODE:	1482	PPCODE:
1339	{	1483	{
		1484	eio_wd wd2 = 0;
1340	dREQ;	1485	dREQ;
1341		1486
1342	req->type = ix;	1487	req->type = ix;
1343	req->fh = newSVsv (oldpath);	1488	req_set_path1 (req, oldpath);
1344	req->data2ptr = SvPVbyte_nolen (req->fh);	1489	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1345	req->data = newSVsv (newpath);	1490	req->int3 = (long)wd2;
1346	req->dataptr = SvPVbyte_nolen (req->data);
1347		1491
1348	REQ_SEND;	1492	REQ_SEND;
1349	}	1493	}
1350		1494
1351	void	1495	void
1352	aio_busy (delay,callback=&PL_sv_undef)	1496	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1353	double delay
1354	SV * callback
1355	PPCODE:	1497	PPCODE:
1356	{	1498	{
1357	dREQ;	1499	dREQ;
1358		1500
1359	req->type = REQ_BUSY;	1501	req->type = EIO_MKNOD;
1360	req->fd = delay < 0. ? 0 : delay;	1502	req->int2 = (mode_t)mode;
1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1503	req->offs = dev;
1362		1504	req_set_path1 (req, pathname);
		1505
1363	REQ_SEND;	1506	REQ_SEND;
1364	}	1507	}
1365		1508
1366	void	1509	void
1367	aio_group (callback=&PL_sv_undef)	1510	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1368	SV * callback	1511	ALIAS:
1369	PROTOTYPE: ;$	1512	aio_mtouch = EIO_MTOUCH
		1513	aio_msync = EIO_MSYNC
1370	PPCODE:	1514	PPCODE:
1371	{	1515	{
		1516	STRLEN svlen;
		1517	char *svptr = SvPVbyte (data, svlen);
		1518	UV len = SvUV (length);
		1519
		1520	if (offset < 0)
		1521	offset += svlen;
		1522
		1523	if (offset < 0 || offset > svlen)
		1524	croak ("offset outside of scalar");
		1525
		1526	if (!SvOK (length) || len + offset > svlen)
		1527	len = svlen - offset;
		1528
		1529	{
		1530	dREQ;
		1531
		1532	req->type = ix;
		1533	req->sv2 = SvREFCNT_inc (data);
		1534	req->ptr2 = (char *)svptr + offset;
		1535	req->size = len;
		1536	req->int1 = flags;
		1537
		1538	REQ_SEND;
		1539	}
		1540	}
		1541
		1542	void
		1543	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1544	PPCODE:
		1545	{
		1546	STRLEN svlen;
		1547	char *svptr = SvPVbyte (data, svlen);
		1548	UV len = SvUV (length);
		1549
		1550	if (offset < 0)
		1551	offset += svlen;
		1552
		1553	if (offset < 0 || offset > svlen)
		1554	croak ("offset outside of scalar");
		1555
		1556	if (!SvOK (length) || len + offset > svlen)
		1557	len = svlen - offset;
		1558
		1559	{
		1560	dREQ;
		1561
		1562	req->type = EIO_MLOCK;
		1563	req->sv2 = SvREFCNT_inc (data);
		1564	req->ptr2 = (char *)svptr + offset;
		1565	req->size = len;
		1566
		1567	REQ_SEND;
		1568	}
		1569	}
		1570
		1571	void
		1572	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1573	PPCODE:
		1574	{
		1575	dREQ;
		1576
		1577	req->type = EIO_MLOCKALL;
		1578	req->int1 = flags;
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	int fd = s_fileno_croak (fh, 0);
1372	dREQ;	1588	dREQ;
1373		1589
1374	req->type = REQ_GROUP;	1590	req->type = EIO_CUSTOM;
1375	req_send (req);	1591	req->sv1 = newSVsv (fh);
		1592	req->int1 = fd;
1376		1593
1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1594	req->feed = fiemap;
1378	}	1595	#if HAVE_FIEMAP
		1596	/* keep our fingers crossed that the next two types are 64 bit */
		1597	req->offs = start;
		1598	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1599	req->int2 = flags;
		1600	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1601	#endif
1379		1602
		1603	REQ_SEND;
		1604	}
		1605
1380	void	1606	void
1381	aio_nop (callback=&PL_sv_undef)	1607	aio_busy (double delay, SV *callback = &PL_sv_undef)
1382	SV * callback
1383	PPCODE:	1608	PPCODE:
1384	{	1609	{
1385	dREQ;	1610	dREQ;
1386		1611
1387	req->type = REQ_NOP;	1612	req->type = EIO_BUSY;
		1613	req->nv1 = delay < 0. ? 0. : delay;
1388		1614
1389	REQ_SEND;	1615	REQ_SEND;
1390	}	1616	}
1391		1617
1392	void	1618	void
1393	aioreq_pri (int pri = DEFAULT_PRI)	1619	aio_group (SV *callback = &PL_sv_undef)
1394	CODE:	1620	PPCODE:
		1621	{
		1622	dREQ;
		1623
		1624	req->type = EIO_GROUP;
		1625
		1626	PUTBACK;
		1627	req_submit (req);
		1628	SPAGAIN;
		1629
		1630	XPUSHs (req_sv (req, aio_grp_stash));
		1631	}
		1632
		1633	void
		1634	aio_nop (SV *callback = &PL_sv_undef)
		1635	ALIAS:
		1636	aio_nop = EIO_NOP
		1637	aio_sync = EIO_SYNC
		1638	PPCODE:
		1639	{
		1640	dREQ;
		1641
		1642	req->type = ix;
		1643
		1644	REQ_SEND;
		1645	}
		1646
		1647	int
		1648	aioreq_pri (int pri = NO_INIT)
		1649	CODE:
		1650	RETVAL = next_pri;
		1651	if (items > 0)
		1652	{
1395	if (pri < PRI_MIN) pri = PRI_MIN;	1653	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396	if (pri > PRI_MAX) pri = PRI_MAX;	1654	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397	next_pri = pri + PRI_BIAS;	1655	next_pri = pri;
		1656	}
		1657	OUTPUT:
		1658	RETVAL
1398		1659
1399	void	1660	void
1400	aioreq_nice (int nice = 0)	1661	aioreq_nice (int nice = 0)
1401	CODE:	1662	CODE:
1402	nice = next_pri - nice;	1663	nice = next_pri - nice;
1403	if (nice < PRI_MIN) nice = PRI_MIN;	1664	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404	if (nice > PRI_MAX) nice = PRI_MAX;	1665	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405	next_pri = nice + PRI_BIAS;	1666	next_pri = nice;
1406		1667
1407	void	1668	void
1408	flush ()	1669	flush ()
1409	PROTOTYPE:
1410	CODE:	1670	CODE:
1411	while (nreqs)	1671	while (eio_nreqs ())
1412	{	1672	{
1413	poll_wait ();	1673	poll_wait ();
1414	poll_cb ();	1674	poll_cb ();
1415	}	1675	}
1416		1676
1417	void	1677	int
1418	poll()	1678	poll ()
1419	PROTOTYPE:
1420	CODE:	1679	CODE:
1421	if (nreqs)
1422	{
1423	poll_wait ();	1680	poll_wait ();
1424	poll_cb ();	1681	RETVAL = poll_cb ();
1425	}
1426
1427	int
1428	poll_fileno()
1429	PROTOTYPE:
1430	CODE:
1431	RETVAL = respipe [0];
1432	OUTPUT:	1682	OUTPUT:
1433	RETVAL	1683	RETVAL
1434		1684
1435	int	1685	int
		1686	poll_fileno ()
		1687	CODE:
		1688	RETVAL = s_epipe_fd (&respipe);
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	int
1436	poll_cb(...)	1693	poll_cb (...)
1437	PROTOTYPE:	1694	PROTOTYPE:
1438	CODE:	1695	CODE:
1439	RETVAL = poll_cb ();	1696	RETVAL = poll_cb ();
1440	OUTPUT:	1697	OUTPUT:
1441	RETVAL	1698	RETVAL
1442		1699
1443	void	1700	void
1444	poll_wait()	1701	poll_wait ()
1445	PROTOTYPE:
1446	CODE:	1702	CODE:
1447	if (nreqs)
1448	poll_wait ();	1703	poll_wait ();
1449		1704
1450	int	1705	int
1451	nreqs()	1706	nreqs ()
1452	PROTOTYPE:
1453	CODE:	1707	CODE:
1454	RETVAL = nreqs;	1708	RETVAL = eio_nreqs ();
1455	OUTPUT:	1709	OUTPUT:
1456	RETVAL	1710	RETVAL
1457		1711
		1712	int
		1713	nready ()
		1714	CODE:
		1715	RETVAL = eio_nready ();
		1716	OUTPUT:
		1717	RETVAL
		1718
		1719	int
		1720	npending ()
		1721	CODE:
		1722	RETVAL = eio_npending ();
		1723	OUTPUT:
		1724	RETVAL
		1725
		1726	int
		1727	nthreads ()
		1728	CODE:
		1729	RETVAL = eio_nthreads ();
		1730	OUTPUT:
		1731	RETVAL
		1732
		1733	int
		1734	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1735	CODE:
		1736	RETVAL = posix_fadvise (fh, offset, length, advice);
		1737	OUTPUT:
		1738	RETVAL
		1739
		1740	IV
		1741	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1742	CODE:
		1743	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1744	OUTPUT:
		1745	RETVAL
		1746
		1747	void
		1748	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1749	PPCODE:
		1750	sv_unmagic (scalar, MMAP_MAGIC);
		1751	{
		1752	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1753	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1754	if (addr == (void *)-1)
		1755	XSRETURN_NO;
		1756
		1757	sv_force_normal (scalar);
		1758
		1759	/* we store the length in mg_obj, as namlen is I32 :/ */
		1760	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1761	->mg_obj = (SV *)length;
		1762
		1763	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1764
		1765	if (!(prot & PROT_WRITE))
		1766	SvREADONLY_on (scalar);
		1767
		1768	if (SvLEN (scalar))
		1769	Safefree (SvPVX (scalar));
		1770
		1771	SvPVX (scalar) = (char *)addr;
		1772	SvCUR_set (scalar, length);
		1773	SvLEN_set (scalar, 0);
		1774	SvPOK_only (scalar);
		1775
		1776	XSRETURN_YES;
		1777	}
		1778
		1779	void
		1780	munmap (SV *scalar)
		1781	CODE:
		1782	sv_unmagic (scalar, MMAP_MAGIC);
		1783
		1784	int
		1785	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1786	ALIAS:
		1787	mprotect = 1
		1788	CODE:
		1789	{
		1790	STRLEN svlen;
		1791	void *addr = SvPVbyte (scalar, svlen);
		1792	STRLEN len = SvUV (length);
		1793
		1794	if (offset < 0)
		1795	offset += svlen;
		1796
		1797	if (offset < 0 || offset > svlen)
		1798	croak ("offset outside of scalar");
		1799
		1800	if (!SvOK (length) || len + offset > svlen)
		1801	len = svlen - offset;
		1802
		1803	addr = (void *)(((intptr_t)addr) + offset);
		1804	eio_page_align (&addr, &len);
		1805
		1806	switch (ix)
		1807	{
		1808	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1809	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1810	}
		1811	}
		1812	OUTPUT:
		1813	RETVAL
		1814
		1815	int
		1816	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1817	CODE:
		1818	{
		1819	STRLEN svlen;
		1820	void *addr = SvPVbyte (scalar, svlen);
		1821	size_t len = SvUV (length);
		1822
		1823	if (offset < 0)
		1824	offset += svlen;
		1825
		1826	if (offset < 0 || offset > svlen)
		1827	croak ("offset outside of scalar");
		1828
		1829	if (!SvOK (length) || len + offset > svlen)
		1830	len = svlen - offset;
		1831
		1832	addr = (void *)(((intptr_t)addr) + offset);
		1833	eio_page_align (&addr, &len);
		1834	#if _POSIX_MEMLOCK_RANGE
		1835	RETVAL = munlock (addr, len);
		1836	#else
		1837	RETVAL = EIO_ENOSYS ();
		1838	#endif
		1839	}
		1840	OUTPUT:
		1841	RETVAL
		1842
		1843	int
		1844	munlockall ()
		1845	CODE:
		1846	#if _POSIX_MEMLOCK
		1847	munlockall ();
		1848	#else
		1849	RETVAL = EIO_ENOSYS ();
		1850	#endif
		1851	OUTPUT:
		1852	RETVAL
		1853
		1854	int
		1855	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1856	CODE:
		1857	{
		1858	#if HAVE_LINUX_SPLICE
		1859	loff_t off_in_, off_out_;
		1860	RETVAL = splice (
		1861	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1862	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1863	length, flags
		1864	);
		1865	#else
		1866	RETVAL = EIO_ENOSYS ();
		1867	#endif
		1868	}
		1869	OUTPUT:
		1870	RETVAL
		1871
		1872	int
		1873	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1874	CODE:
		1875	#if HAVE_LINUX_SPLICE
		1876	RETVAL = tee (rfh, wfh, length, flags);
		1877	#else
		1878	RETVAL = EIO_ENOSYS ();
		1879	#endif
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	int
		1884	pipesize (aio_rfd rfh, int new_size = -1)
		1885	PROTOTYPE: $;$
		1886	CODE:
		1887	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1888	if (new_size >= 0)
		1889	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1890	else
		1891	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1892	#else
		1893	errno = ENOSYS;
		1894	RETVAL = -1;
		1895	#endif
		1896	OUTPUT:
		1897	RETVAL
		1898
		1899	void _on_next_submit (SV *cb)
		1900	CODE:
		1901	SvREFCNT_dec (on_next_submit);
		1902	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1903
1458	PROTOTYPES: DISABLE	1904	PROTOTYPES: DISABLE
		1905
		1906	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1907
		1908	BOOT:
		1909	{
		1910	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1911	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1912	}
		1913
		1914	void
		1915	DESTROY (SV *self)
		1916	CODE:
		1917	{
		1918	aio_wd wd = SvAIO_WD (self);
		1919	#if HAVE_AT
		1920	{
		1921	SV *callback = &PL_sv_undef;
		1922	dREQ; /* clobbers next_pri :/ */
		1923	next_pri = req->pri; /* restore next_pri */
		1924	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1925	req->type = EIO_WD_CLOSE;
		1926	req->wd = wd;
		1927	REQ_SEND;
		1928	}
		1929	#else
		1930	eio_wd_close_sync (wd);
		1931	#endif
		1932	}
1459		1933
1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1934	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461		1935
1462	void	1936	void
1463	cancel (aio_req_ornot req)	1937	cancel (aio_req_ornot req)
1464	CODE:	1938	CODE:
1465	req_cancel (req);	1939	eio_cancel (req);
1466		1940
1467	void	1941	void
1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1942	cb (aio_req_ornot req, SV *callback = NO_INIT)
1469	CODE:	1943	PPCODE:
		1944	{
		1945	if (GIMME_V != G_VOID)
		1946	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1947
		1948	if (items > 1)
		1949	{
		1950	SV *cb_cv = get_cb (callback);
		1951
1470	SvREFCNT_dec (req->callback);	1952	SvREFCNT_dec (req->callback);
1471	req->callback = newSVsv (callback);	1953	req->callback = SvREFCNT_inc (cb_cv);
		1954	}
		1955	}
1472		1956
1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1957	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474		1958
1475	void	1959	void
1476	add (aio_req grp, ...)	1960	add (aio_req grp, ...)
1477	PPCODE:	1961	PPCODE:
1478	{	1962	{
1479	int i;	1963	int i;
1480	aio_req req;
1481		1964
1482	if (grp->fd == 2)	1965	if (grp->int1 == 2)
1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1966	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484		1967
1485	for (i = 1; i < items; ++i )	1968	for (i = 1; i < items; ++i )
1486	{	1969	{
		1970	aio_req req;
		1971
1487	if (GIMME_V != G_VOID)	1972	if (GIMME_V != G_VOID)
1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1973	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489		1974
1490	req = SvAIO_REQ (ST (i));	1975	req = SvAIO_REQ (ST (i));
1491		1976
1492	if (req)	1977	if (req)
1493	{	1978	eio_grp_add (grp, req);
1494	++grp->length;
1495	req->grp = grp;
1496
1497	req->grp_prev = 0;
1498	req->grp_next = grp->grp_first;
1499
1500	if (grp->grp_first)
1501	grp->grp_first->grp_prev = req;
1502
1503	grp->grp_first = req;
1504	}
1505	}	1979	}
1506	}	1980	}
1507		1981
1508	void	1982	void
1509	cancel_subs (aio_req_ornot req)	1983	cancel_subs (aio_req_ornot req)
…		…
1513	void	1987	void
1514	result (aio_req grp, ...)	1988	result (aio_req grp, ...)
1515	CODE:	1989	CODE:
1516	{	1990	{
1517	int i;	1991	int i;
		1992	AV *av;
		1993
		1994	grp->errorno = errno;
		1995
1518	AV *av = newAV ();	1996	av = newAV ();
		1997	av_extend (av, items - 1);
1519		1998
1520	for (i = 1; i < items; ++i )	1999	for (i = 1; i < items; ++i )
1521	av_push (av, newSVsv (ST (i)));	2000	av_push (av, newSVsv (ST (i)));
1522		2001
1523	SvREFCNT_dec (grp->data);	2002	SvREFCNT_dec (grp->sv1);
1524	grp->data = (SV *)av;	2003	grp->sv1 = (SV *)av;
1525	}	2004	}
		2005
		2006	void
		2007	errno (aio_req grp, int errorno = errno)
		2008	CODE:
		2009	grp->errorno = errorno;
1526		2010
1527	void	2011	void
1528	limit (aio_req grp, int limit)	2012	limit (aio_req grp, int limit)
1529	CODE:	2013	CODE:
1530	grp->fd2 = limit;	2014	eio_grp_limit (grp, limit);
1531	aio_grp_feed (grp);
1532		2015
1533	void	2016	void
1534	feed (aio_req grp, SV *callback=&PL_sv_undef)	2017	feed (aio_req grp, SV *callback = &PL_sv_undef)
1535	CODE:	2018	CODE:
1536	{	2019	{
1537	SvREFCNT_dec (grp->fh2);	2020	SvREFCNT_dec (grp->sv2);
1538	grp->fh2 = newSVsv (callback);	2021	grp->sv2 = newSVsv (callback);
		2022	grp->feed = aio_grp_feed;
1539		2023
1540	if (grp->fd2 <= 0)	2024	if (grp->int2 <= 0)
1541	grp->fd2 = 2;	2025	grp->int2 = 2;
1542		2026
1543	aio_grp_feed (grp);	2027	eio_grp_limit (grp, grp->int2);
1544	}	2028	}
1545		2029

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