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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.81 by root, Fri Oct 27 20:10:06 2006 UTC vs.
Revision 1.228 by root, Fri Jan 24 23:46:16 2014 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
34	# if __linux	24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/types.h>
		28	# include <linux/fiemap.h>
		29	# define HAVE_FIEMAP 1
		30	# endif
		31	#endif
		32
		33	/* perl namespace pollution */
		34	#undef VERSION
		35
		36	/* perl stupidly overrides readdir and maybe others */
		37	/* with thread-unsafe versions, imagine that :( */
		38	#undef readdir
		39	#undef opendir
		40	#undef closedir
		41
		42	#ifdef _WIN32
		43
		44	// perl overrides all those nice libc functions
		45
		46	#undef malloc
		47	#undef free
		48	#undef open
		49	#undef read
		50	#undef write
		51	#undef send
		52	#undef recv
		53	#undef stat
		54	#undef lstat
		55	#undef fstat
		56	#undef truncate
		57	#undef ftruncate
		58	#undef open
		59	#undef link
		60	#undef close
		61	#undef unlink
		62	#undef mkdir
		63	#undef rmdir
		64	#undef rename
		65	#undef lseek
		66	#undef opendir
		67	#undef readdir
		68	#undef closedir
		69	#undef chmod
		70	#undef fchmod
		71	#undef dup
		72	#undef dup2
		73	#undef abort
		74	#undef pipe
		75
		76	#define EIO_STRUCT_STAT struct _stati64
		77	#define EIO_STRUCT_STATI64
		78
		79	#else
		80
		81	#include <sys/time.h>
35	# include <sys/sendfile.h>	82	#include <sys/select.h>
36	# elif __freebsd	83	#include <unistd.h>
37	# include <sys/socket.h>	84	#include <utime.h>
38	# include <sys/uio.h>	85	#include <signal.h>
39	# elif __hpux	86
40	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
41	# elif __solaris /* not yet */	88
42	# include <sys/sendfile.h>	89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	SV *sv3, *sv4; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/config.h"
		120	#include "libeio/eio.h"
		121
		122	static int req_invoke (eio_req *req);
		123	#define EIO_FINISH(req) req_invoke (req)
		124	static void req_destroy (eio_req *grp);
		125	#define EIO_DESTROY(req) req_destroy (req)
		126
		127	#include "libeio/eio.c"
		128
		129	#if !HAVE_POSIX_FADVISE
		130	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		131	#endif
		132
		133	#if !HAVE_POSIX_MADVISE
		134	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#ifndef MAP_ANONYMOUS
		138	# ifdef MAP_ANON
		139	# define MAP_ANONYMOUS MAP_ANON
43	# else	140	# else
44	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	142	# endif
46	#endif	143	#endif
47		144
48	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
49	#ifndef NAME_MAX	146	#include "def0.h"
50	# define NAME_MAX 4096
51	#endif
52		147
53	#ifndef PTHREAD_STACK_MIN	148	#ifndef makedev
54	/* care for broken platforms, e.g. windows */	149	# define makedev(maj,min) (((maj) << 8) | (min))
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif	150	#endif
		151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
76	#endif	153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
77		157
78	/* buffer size for various temporary buffers */	158	#if PAGESIZE <= 0
79	#define AIO_BUFSIZE 65536	159	# define PAGESIZE sysconf (_SC_PAGESIZE)
		160	#endif
80		161
81	#define dBUF \	162	/*****************************************************************************/
82	char *aio_buf; \	163
83	LOCK (wrklock); \	164	static void
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	165	fiemap (eio_req *req)
85	UNLOCK (wrklock); \	166	{
86	if (!aio_buf) \	167	req->result = -1;
		168
		169	#if HAVE_FIEMAP
		170	/* assume some c99 */
		171	struct fiemap *fiemap = 0;
		172	size_t end_offset;
		173	int count = req->int3;
		174
		175	req->flags |= EIO_FLAG_PTR1_FREE;
		176
		177	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		178	/* increase in 3.5kb steps */
		179	if (count < 0)
		180	count = 8;
		181
		182	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		183	errno = ENOMEM;
		184	if (!fiemap)
87	return -1;	185	return;
88		186
89	enum {	187	req->ptr1 = fiemap;
90	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_MKNOD, REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};
102		188
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	189	fiemap->fm_start = req->offs;
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	190	fiemap->fm_length = req->size;
		191	fiemap->fm_flags = req->int2;
		192	fiemap->fm_extent_count = count;
105		193
106	typedef struct aio_cb	194	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
107	{	195	return;
108	struct aio_cb *volatile next;
109		196
110	SV *data, *callback;	197	if (req->int3 >= 0 /* not autosizing */
111	SV *fh, *fh2;	198	|| !fiemap->fm_mapped_extents /* no more extents */
112	void *dataptr, *data2ptr;	199	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
113	Stat_t *statdata;	200	goto done;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117		201
118	STRLEN dataoffset;	202	/* else we have to loop -
119	int type;	203	* it would be tempting (actually I tried that first) to just query the
120	int fd, fd2;	204	* number of extents needed, but linux often feels like not returning all
121	int errorno;	205	* extents, without telling us it left any out. this complicates
122	mode_t mode; /* open */	206	* this quite a bit.
		207	*/
123		208
124	unsigned char flags;	209	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
125	unsigned char pri;
126		210
127	SV *self; /* the perl counterpart of this request, if any */	211	for (;;)
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;
130
131	enum {
132	FLAG_CANCELLED = 0x01,
133	};
134
135	typedef aio_cb *aio_req;
136	typedef aio_cb *aio_req_ornot;
137
138	enum {
139	PRI_MIN = -4,
140	PRI_MAX = 4,
141
142	DEFAULT_PRI = 0,
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker *prev, *next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{	212	{
181	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) */
182	wrk->dirp = 0;	214	char scratch[3072];
183	}	215	struct fiemap *incmap = (struct fiemap *)scratch;
184		216
185	if (wrk->dbuf)	217	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
186	{	218	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
187	free (wrk->dbuf);	219	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
188	wrk->dbuf = 0;	220	incmap->fm_flags = fiemap->fm_flags;
189	}	221	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
190	}
191		222
192	static void worker_free (worker *wrk)	223	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;	224	return;
274		225
275	--q->size;	226	if (!incmap->fm_mapped_extents)
		227	goto done;
276		228
277	for (pri = NUM_PRI; pri--; )	229	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
278	{	230	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
279	aio_req req = q->qs[pri];	231	errno = ENOMEM;
280
281	if (req)	232	if (!fiemap)
		233	return;
		234
		235	req->ptr1 = fiemap;
		236
		237	for (count = 0; count < incmap->fm_mapped_extents; ++count)
282	{	238	{
283	if (!(q->qs[pri] = req->next))	239	struct fiemap_extent *e = incmap->fm_extents + count;
284	q->qe[pri] = 0;
285		240
286	return req;	241	if (e->fe_logical + e->fe_length >= end_offset)
		242	goto done;
		243
		244	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		245
		246	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		247	goto done;
		248
287	}	249	}
288	}	250	}
289		251
290	abort ();	252	done:
291	}	253	req->result = 0;
292		254
293	static int poll_cb (int max);	255	#else
294	static void req_invoke (aio_req req);	256	errno = ENOSYS;
		257	#endif
		258	}
		259
		260	/*****************************************************************************/
		261
		262	enum {
		263	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		264	};
		265
		266	typedef eio_req *aio_req;
		267	typedef eio_req *aio_req_ornot;
		268	typedef eio_wd aio_wd;
		269
		270	static SV *on_next_submit;
		271	static int next_pri = EIO_PRI_DEFAULT;
		272	static int max_outstanding;
		273
		274	static s_epipe respipe;
		275
295	static void req_free (aio_req req);	276	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	277	static void req_cancel (aio_req req);
297		278
		279	static void
		280	want_poll (void)
		281	{
		282	/* write a dummy byte to the pipe so fh becomes ready */
		283	s_epipe_signal (&respipe);
		284	}
		285
		286	static void
		287	done_poll (void)
		288	{
		289	/* read any signals sent by the worker threads */
		290	s_epipe_drain (&respipe);
		291	}
		292
298	/* must be called at most once */	293	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	294	static SV *
		295	req_sv (aio_req req, HV *stash)
300	{	296	{
301	if (!req->self)	297	if (!req->self)
302	{	298	{
303	req->self = (SV *)newHV ();	299	req->self = (SV *)newHV ();
304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	300	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
305	}	301	}
306		302
307	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	303	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
308	}	304	}
309		305
310	static aio_req SvAIO_REQ (SV *sv)	306	static SV *
		307	newSVaio_wd (aio_wd wd)
		308	{
		309	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		310	}
		311
		312	static aio_req
		313	SvAIO_REQ (SV *sv)
311	{	314	{
312	MAGIC *mg;	315	MAGIC *mg;
313		316
314	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	317	if (!SvROK (sv)
		318	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		319	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		320	&& SvSTASH (SvRV (sv)) != aio_req_stash
		321	&& !sv_derived_from (sv, "IO::AIO::REQ")))
315	croak ("object of class " AIO_REQ_KLASS " expected");	322	croak ("object of class IO::AIO::REQ expected");
316		323
317	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	324	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
318		325
319	return mg ? (aio_req)mg->mg_ptr : 0;	326	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	327	}
321		328
		329	static aio_wd
		330	SvAIO_WD (SV *sv)
		331	{
		332	if (!SvROK (sv)
		333	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		334	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		335	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		336
		337	return (aio_wd)(long)SvIVX (SvRV (sv));
		338	}
		339
		340	static void
322	static void aio_grp_feed (aio_req grp)	341	aio_grp_feed (aio_req grp)
323	{	342	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	343	if (grp->sv2 && SvOK (grp->sv2))
325	{	344	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	345	dSP;
331		346
332	ENTER;	347	ENTER;
333	SAVETMPS;	348	SAVETMPS;
334	PUSHMARK (SP);	349	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	350	XPUSHs (req_sv (grp, aio_grp_stash));
336	PUTBACK;	351	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	352	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	353	SPAGAIN;
339	FREETMPS;	354	FREETMPS;
340	LEAVE;	355	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	356	}
351	}	357	}
352		358
353	static void aio_grp_dec (aio_req grp)	359	static void
		360	req_submit (eio_req *req)
354	{	361	{
355	--grp->length;	362	eio_submit (req);
356		363
357	/* call feeder, if applicable */	364	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	365	{
363	req_invoke (grp);	366	dSP;
364	req_free (grp);	367	SV *cb = sv_2mortal (on_next_submit);
		368
		369	on_next_submit = 0;
		370
		371	PUSHMARK (SP);
		372	PUTBACK;
		373	call_sv (cb, G_DISCARD | G_EVAL);
365	}	374	}
366	}	375	}
367		376
		377	static int
368	static void req_invoke (aio_req req)	378	req_invoke (eio_req *req)
369	{	379	{
370	dSP;	380	if (req->flags & FLAG_SV2_RO_OFF)
		381	SvREADONLY_off (req->sv2);
371		382
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	383	if (!EIO_CANCELLED (req) && req->callback)
373	{	384	{
		385	dSP;
		386	static SV *sv_result_cache; /* caches the result integer SV */
		387	SV *sv_result;
		388
374	ENTER;	389	ENTER;
375	SAVETMPS;	390	SAVETMPS;
376	PUSHMARK (SP);	391	PUSHMARK (SP);
377	EXTEND (SP, 1);	392	EXTEND (SP, 1);
378		393
		394	/* do not recreate the result IV from scratch each time */
		395	if (expect_true (sv_result_cache))
		396	{
		397	sv_result = sv_result_cache; sv_result_cache = 0;
		398	SvIV_set (sv_result, req->result);
		399	SvIOK_only (sv_result);
		400	}
		401	else
		402	{
		403	sv_result = newSViv (req->result);
		404	SvREADONLY_on (sv_result);
		405	}
		406
379	switch (req->type)	407	switch (req->type)
380	{	408	{
		409	case EIO_WD_OPEN:
		410	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		411	break;
		412
381	case REQ_READDIR:	413	case EIO_READDIR:
382	{	414	{
383	SV *rv = &PL_sv_undef;	415	SV *rv = &PL_sv_undef;
384		416
385	if (req->result >= 0)	417	if (req->result >= 0)
386	{	418	{
387	int i;	419	int i;
388	char *buf = req->data2ptr;	420	char *names = (char *)req->ptr2;
		421	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389	AV *av = newAV ();	422	AV *av = newAV ();
390		423
391	av_extend (av, req->result - 1);	424	av_extend (av, req->result - 1);
392		425
393	for (i = 0; i < req->result; ++i)	426	for (i = 0; i < req->result; ++i)
394	{	427	{
395	SV *sv = newSVpv (buf, 0);	428	if (req->int1 & EIO_READDIR_DENTS)
		429	{
		430	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		431
		432	if (req->int1 & EIO_READDIR_CUSTOM2)
		433	{
		434	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		435	AV *avent = newAV ();
		436
		437	av_extend (avent, 2);
		438
		439	if (!sv_type [ent->type])
		440	{
		441	sv_type [ent->type] = newSViv (ent->type);
		442	SvREADONLY_on (sv_type [ent->type]);
		443	}
		444
		445	av_store (avent, 0, namesv);
		446	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		447	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		448
		449	av_store (av, i, newRV_noinc ((SV *)avent));
		450	}
		451	else
397	av_store (av, i, sv);	452	av_store (av, i, namesv);
		453
		454	++ent;
		455	}
		456	else
		457	{
		458	SV *name = newSVpv (names, 0);
		459	av_store (av, i, name);
398	buf += SvCUR (sv) + 1;	460	names += SvCUR (name) + 1;
		461	}
399	}	462	}
400		463
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	464	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	465	}
403		466
404	PUSHs (rv);	467	PUSHs (rv);
		468
		469	if (req->int1 & EIO_READDIR_CUSTOM1)
		470	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
405	}	471	}
406	break;	472	break;
407		473
408	case REQ_OPEN:	474	case EIO_OPEN:
409	{	475	{
410	/* convert fd to fh */	476	/* convert fd to fh */
411	SV *fh;	477	SV *fh = &PL_sv_undef;
412		478
413	PUSHs (sv_2mortal (newSViv (req->result)));	479	if (req->result >= 0)
414	PUTBACK;	480	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	481	GV *gv = (GV *)sv_newmortal ();
416	SPAGAIN;	482	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		483	char sym [64];
		484	int symlen;
		485
		486	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		487	gv_init (gv, aio_stash, sym, symlen, 0);
417		488
418	fh = SvREFCNT_inc (POPs);	489	symlen = snprintf (
		490	sym,
		491	sizeof (sym),
		492	"%s&=%d",
		493	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		494	(int)req->result
		495	);
419		496
		497	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		498	fh = (SV *)gv;
		499	}
		500
420	PUSHMARK (SP);	501	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	502	}
423	break;	503	break;
424		504
		505	case EIO_STATVFS:
		506	case EIO_FSTATVFS:
		507	{
		508	SV *rv = &PL_sv_undef;
		509
		510	#ifndef _WIN32
		511	if (req->result >= 0)
		512	{
		513	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		514	HV *hv = newHV ();
		515	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		516	* chooses to make it a struct.
		517	*/
		518	unsigned long fsid = 0;
		519	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		520
		521	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		522
		523	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		524	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		525	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		526	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		527	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		528	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		529	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		530	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		531	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		532	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		533	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		534	}
		535	#endif
		536
		537	PUSHs (rv);
		538	}
		539
		540	break;
		541
425	case REQ_GROUP:	542	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	543	req->int1 = 2; /* mark group as finished */
427		544
428	if (req->data)	545	if (req->sv1)
429	{	546	{
430	int i;	547	int i;
431	AV *av = (AV *)req->data;	548	AV *av = (AV *)req->sv1;
432		549
433	EXTEND (SP, AvFILL (av) + 1);	550	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	551	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	552	PUSHs (*av_fetch (av, i, 0));
436	}	553	}
437	break;	554	break;
438		555
439	case REQ_NOP:	556	case EIO_NOP:
440	case REQ_BUSY:	557	case EIO_BUSY:
441	break;	558	break;
442		559
		560	case EIO_READLINK:
		561	case EIO_REALPATH:
		562	if (req->result > 0)
		563	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		564	break;
		565
		566	case EIO_STAT:
		567	case EIO_LSTAT:
		568	case EIO_FSTAT:
		569	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		570
		571	if (!(PL_laststatval = req->result))
		572	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		573	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		574
		575	PUSHs (sv_result);
		576	break;
		577
		578	case EIO_SEEK:
		579	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		580	break;
		581
		582	case EIO_READ:
		583	{
		584	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		585	*SvEND (req->sv2) = 0;
		586	SvPOK_only (req->sv2);
		587	SvSETMAGIC (req->sv2);
		588	PUSHs (sv_result);
		589	}
		590	break;
		591
		592	case EIO_CUSTOM:
		593	if (req->feed == fiemap)
		594	{
		595	#if HAVE_FIEMAP
		596	if (!req->result)
		597	{
		598	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		599
		600	if (fiemap->fm_extent_count)
		601	{
		602	AV *av = newAV ();
		603	int i;
		604
		605	while (fiemap->fm_mapped_extents)
		606	{
		607	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		608	AV *ext_av = newAV ();
		609
		610	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		611	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		612	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		613	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		614
		615	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		616	}
		617
		618	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		619	}
		620	else
		621	{
		622	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		623	PUSHs (sv_result);
		624	}
		625	}
		626	#endif
		627	}
		628	else
		629	PUSHs (sv_result);
		630	break;
		631
		632	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		633	if (req->result > 0)
		634	SvIV_set (sv_result, 0);
		635	/* FALLTHROUGH */
		636
443	default:	637	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	638	PUSHs (sv_result);
445	break;	639	break;
446	}	640	}
447		641
448	errno = req->errorno;	642	errno = req->errorno;
449		643
450	PUTBACK;	644	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	645	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	646	SPAGAIN;
		647
		648	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		649	SvREFCNT_dec (sv_result);
		650	else
		651	sv_result_cache = sv_result;
453		652
454	FREETMPS;	653	FREETMPS;
455	LEAVE;	654	LEAVE;
		655
		656	PUTBACK;
456	}	657	}
457		658
458	if (req->grp)	659	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	660	}
478		661
479	static void req_free (aio_req req)	662	static void
		663	req_destroy (aio_req req)
480	{	664	{
481	if (req->self)	665	if (req->self)
482	{	666	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	667	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	668	SvREFCNT_dec (req->self);
485	}	669	}
486		670
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	671	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	672	SvREFCNT_dec (req->sv2);
		673	SvREFCNT_dec (req->sv3);
		674	SvREFCNT_dec (req->sv4);
490	SvREFCNT_dec (req->callback);	675	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492		676
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495
496	Safefree (req);	677	free (req);
497	}	678	}
498		679
		680	static void
499	static void req_cancel_subs (aio_req grp)	681	req_cancel_subs (aio_req grp)
500	{	682	{
501	aio_req sub;
502
503	if (grp->type != REQ_GROUP)	683	if (grp->type != EIO_GROUP)
504	return;	684	return;
505		685
506	SvREFCNT_dec (grp->fh2);	686	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	687	grp->sv2 = 0;
508		688
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	689	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	690	}
512		691
513	static void req_cancel (aio_req req)	692	static void ecb_cold
		693	create_respipe (void)
514	{	694	{
515	req->flags |= FLAG_CANCELLED;	695	if (s_epipe_renew (&respipe))
516		696	croak ("IO::AIO: unable to initialize result pipe");
517	req_cancel_subs (req);
518	}	697	}
519		698
520	static void *aio_proc(void *arg);	699	static void
521		700	poll_wait (void)
522	static void start_thread (void)
523	{	701	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif
538
539	sigfillset (&fullsigset);
540
541	LOCK (wrklock);
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
545	{
546	wrk->prev = &wrk_first;
547	wrk->next = wrk_first.next;
548	wrk_first.next->prev = wrk;
549	wrk_first.next = wrk;
550	++started;
551	}
552	else
553	free (wrk);
554
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);
556	UNLOCK (wrklock);
557	}
558
559	static void maybe_start_thread ()
560	{
561	#if 0
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif
565
566	if (started >= wanted)
567	return;
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}
592
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()
638	{
639	fd_set rfd;
640
641	while (nreqs)	702	while (eio_nreqs ())
642	{	703	{
643	int size;	704	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	705
		706	X_LOCK (reslock);
645	size = res_queue.size;	707	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	708	X_UNLOCK (reslock);
647		709
648	if (size)	710	if (size)
649	return;	711	return;
650		712
651	maybe_start_thread ();	713	etp_maybe_start_thread ();
652		714
653	FD_ZERO(&rfd);	715	s_epipe_wait (&respipe);
654	FD_SET(respipe [0], &rfd);
655
656	select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	716	}
658	}	717	}
659		718
660	static int poll_cb (int max)	719	static int
		720	poll_cb (void)
661	{	721	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	722	for (;;)
668	{	723	{
669	while (max <= 0 || count < max)	724	int res = eio_poll ();
		725
		726	if (res > 0)
		727	croak (0);
		728
		729	if (!max_outstanding || max_outstanding > eio_nreqs ())
		730	return res;
		731
		732	poll_wait ();
		733	}
		734	}
		735
		736	static void ecb_cold
		737	reinit (void)
		738	{
		739	create_respipe ();
		740
		741	if (eio_init (want_poll, done_poll) < 0)
		742	croak ("IO::AIO: unable to initialise eio library");
		743	}
		744
		745	/*****************************************************************************/
		746
		747	#if !_POSIX_MAPPED_FILES
		748	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		749	# define munmap(addr,length) EIO_ENOSYS ()
		750	#endif
		751
		752	#if !_POSIX_MEMORY_PROTECTION
		753	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		754	# define PROT_NONE 0
		755	# define PROT_WRITE 0
		756	# define MAP_PRIVATE 0
		757	# define MAP_SHARED 0
		758	# define MAP_FIXED 0
		759	#endif
		760
		761	#define MMAP_MAGIC PERL_MAGIC_ext
		762
		763	static int ecb_cold
		764	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		765	{
		766	int old_errno = errno;
		767	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		768	errno = old_errno;
		769
		770	mg->mg_obj = 0; /* just in case */
		771
		772	SvREADONLY_off (sv);
		773
		774	if (SvPVX (sv) != mg->mg_ptr)
		775	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		776
		777	SvCUR_set (sv, 0);
		778	SvPVX (sv) = 0;
		779	SvOK_off (sv);
		780
		781	return 0;
		782	}
		783
		784	static MGVTBL mmap_vtbl = {
		785	0, 0, 0, 0, mmap_free
		786	};
		787
		788	/*****************************************************************************/
		789
		790	static SV *
		791	get_cb (SV *cb_sv)
		792	{
		793	SvGETMAGIC (cb_sv);
		794	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		795	}
		796
		797	static aio_req ecb_noinline
		798	dreq (SV *callback)
		799	{
		800	SV *cb_cv;
		801	aio_req req;
		802	int req_pri = next_pri;
		803	next_pri = EIO_PRI_DEFAULT;
		804
		805	cb_cv = get_cb (callback);
		806
		807	req = calloc (sizeof (*req), 1);
		808	if (!req)
		809	croak ("out of memory during eio_req allocation");
		810
		811	req->callback = SvREFCNT_inc (cb_cv);
		812	req->pri = req_pri;
		813
		814	return req;
		815	}
		816
		817	#define dREQ \
		818	aio_req req = dreq (callback); \
		819
		820	#define REQ_SEND \
		821	PUTBACK; \
		822	req_submit (req); \
		823	SPAGAIN; \
		824	\
		825	if (GIMME_V != G_VOID) \
		826	XPUSHs (req_sv (req, aio_req_stash));
		827
		828	ecb_inline void
		829	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		830	{
		831	if (expect_false (SvROK (path)))
		832	{
		833	SV *rv = SvRV (path);
		834	SV *wdob;
		835
		836	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
670	{	837	{
671	maybe_start_thread ();	838	path = AvARRAY (rv)[1];
		839	wdob = AvARRAY (rv)[0];
672		840
673	LOCK (reslock);	841	if (SvOK (wdob))
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{	842	{
678	--npending;	843	*wd = SvAIO_WD (wdob);
679		844	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}	845	}
701	else	846	else
702	{	847	*wd = EIO_INVALID_WD;
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}	848	}
		849	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		850	{
		851	*wd = (aio_wd)(long)SvIVX (rv);
		852	*wdsv = SvREFCNT_inc_NN (rv);
		853	*ptr = ".";
		854	return; /* path set to "." */
		855	}
		856	else
		857	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		858	}
723		859
724	if (nreqs <= max_outstanding)	860	*pathsv = newSVsv (path);
		861	*ptr = SvPVbyte_nolen (*pathsv);
		862	}
		863
		864	static void ecb_noinline
		865	req_set_path1 (aio_req req, SV *path)
		866	{
		867	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		868	}
		869
		870	static void ecb_noinline
		871	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		872	{
		873	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		874
		875	switch (SvTYPE (rv))
		876	{
		877	case SVt_PVIO:
		878	case SVt_PVLV:
		879	case SVt_PVGV:
		880	req->type = type_fh;
		881	req->sv1 = newSVsv (fh_or_path);
		882	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
725	break;	883	break;
726		884
727	poll_wait ();	885	default:
728		886	req->type = type_path;
729	max = 0;	887	req_set_path1 (req, fh_or_path);
		888	break;
730	}	889	}
731
732	return count;
733	}	890	}
734		891
735	static void create_pipe ()	892	XS(boot_IO__AIO) ecb_cold;
736	{
737	if (pipe (respipe))
738	croak ("unable to initialize result pipe");
739		893
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741	croak ("cannot set result pipe to nonblocking mode");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}
746
747	/*****************************************************************************/
748	/* work around various missing functions */
749
750	#if !HAVE_PREADWRITE
751	# define pread aio_pread
752	# define pwrite aio_pwrite
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
762	{
763	ssize_t res;
764	off_t ooffset;
765
766	LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;
854
855	#if HAVE_SENDFILE
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858
859	# elif __freebsd
860	/*
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867
868	if (res < 0 && sbytes)
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897
898	if (res < 0
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
900	#if __solaris
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
902	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908
909	res = 0;
910
911	while (count)
912	{
913	ssize_t cnt;
914
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916
917	if (cnt <= 0)
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922
923	cnt = write (ofd, aio_buf, cnt);
924
925	if (cnt <= 0)
926	{
927	if (cnt && !res) res = -1;
928	break;
929	}
930
931	offset += cnt;
932	res += cnt;
933	count -= cnt;
934	}
935	}
936
937	return res;
938	}
939
940	/* read a full directory */
941	static void scandir_ (aio_req req, worker *self)
942	{
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char *name, *names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000
1001	/*****************************************************************************/
1002
1003	static void *aio_proc (void *thr_arg)
1004	{
1005	aio_req req;
1006	worker *self = (worker *)thr_arg;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1049
1050	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1051	case REQ_FSYNC: req->result = fsync (req->fd); break;
1052	case REQ_READDIR: scandir_ (req, self); break;
1053
1054	case REQ_BUSY:
1055	{
1056	struct timeval tv;
1057
1058	tv.tv_sec = req->fd;
1059	tv.tv_usec = req->fd2;
1060
1061	req->result = select (0, 0, 0, 0, &tv);
1062	}
1063
1064	case REQ_GROUP:
1065	case REQ_NOP:
1066	break;
1067
1068	case REQ_QUIT:
1069	LOCK (wrklock);
1070	worker_free (self);
1071	--started;
1072	UNLOCK (wrklock);
1073	return 0;
1074
1075	default:
1076	req->result = ENOSYS;
1077	break;
1078	}
1079
1080	req->errorno = errno;
1081
1082	LOCK (reslock);
1083
1084	++npending;
1085
1086	if (!reqq_push (&res_queue, req))
1087	/* write a dummy byte to the pipe so fh becomes ready */
1088	write (respipe [1], &respipe, 1);
1089
1090	self->req = 0;
1091	worker_clear (self);
1092
1093	UNLOCK (reslock);
1094	}
1095	}
1096
1097	/*****************************************************************************/
1098
1099	static void atfork_prepare (void)
1100	{
1101	LOCK (wrklock);
1102	LOCK (reqlock);
1103	LOCK (reslock);
1104	#if !HAVE_PREADWRITE
1105	LOCK (preadwritelock);
1106	#endif
1107	#if !HAVE_READDIR_R
1108	LOCK (readdirlock);
1109	#endif
1110	}
1111
1112	static void atfork_parent (void)
1113	{
1114	#if !HAVE_READDIR_R
1115	UNLOCK (readdirlock);
1116	#endif
1117	#if !HAVE_PREADWRITE
1118	UNLOCK (preadwritelock);
1119	#endif
1120	UNLOCK (reslock);
1121	UNLOCK (reqlock);
1122	UNLOCK (wrklock);
1123	}
1124
1125	static void atfork_child (void)
1126	{
1127	aio_req prv;
1128
1129	while (prv = reqq_shift (&req_queue))
1130	req_free (prv);
1131
1132	while (prv = reqq_shift (&res_queue))
1133	req_free (prv);
1134
1135	while (wrk_first.next != &wrk_first)
1136	{
1137	worker *wrk = wrk_first.next;
1138
1139	if (wrk->req)
1140	req_free (wrk->req);
1141
1142	worker_clear (wrk);
1143	worker_free (wrk);
1144	}
1145
1146	started = 0;
1147	nreqs = 0;
1148
1149	close (respipe [0]);
1150	close (respipe [1]);
1151	create_pipe ();
1152
1153	atfork_parent ();
1154	}
1155
1156	#define dREQ \
1157	aio_req req; \
1158	int req_pri = next_pri; \
1159	next_pri = DEFAULT_PRI + PRI_BIAS; \
1160	\
1161	if (SvOK (callback) && !SvROK (callback)) \
1162	croak ("callback must be undef or of reference type"); \
1163	\
1164	Newz (0, req, 1, aio_cb); \
1165	if (!req) \
1166	croak ("out of memory during aio_req allocation"); \
1167	\
1168	req->callback = newSVsv (callback); \
1169	req->pri = req_pri
1170
1171	#define REQ_SEND \
1172	req_send (req); \
1173	\
1174	if (GIMME_V != G_VOID) \
1175	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1176
1177	MODULE = IO::AIO PACKAGE = IO::AIO	894	MODULE = IO::AIO PACKAGE = IO::AIO
1178		895
1179	PROTOTYPES: ENABLE	896	PROTOTYPES: ENABLE
1180		897
1181	BOOT:	898	BOOT:
1182	{	899	{
		900	static const struct {
		901	const char *name;
		902	IV iv;
		903	} *civ, const_iv[] = {
		904	# define const_niv(name, value) { # name, (IV) value },
		905	# define const_iv(name) { # name, (IV) name },
		906	# define const_eio(name) { # name, (IV) EIO_ ## name },
		907
		908	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		909
		910	const_iv (ENOSYS)
		911	const_iv (EXDEV)
		912	const_iv (EBADR)
		913
		914	const_iv (O_RDONLY)
		915	const_iv (O_WRONLY)
		916	const_iv (O_RDWR)
		917	const_iv (O_CREAT)
		918	const_iv (O_TRUNC)
		919	const_iv (O_EXCL)
		920	const_iv (O_APPEND)
		921
		922	const_iv (O_ASYNC)
		923	const_iv (O_DIRECT)
		924	const_iv (O_NOATIME)
		925
		926	const_iv (O_CLOEXEC)
		927	const_iv (O_NOCTTY)
		928	const_iv (O_NOFOLLOW)
		929	const_iv (O_NONBLOCK)
		930	const_iv (O_EXEC)
		931	const_iv (O_SEARCH)
		932	const_iv (O_DIRECTORY)
		933	const_iv (O_DSYNC)
		934	const_iv (O_RSYNC)
		935	const_iv (O_SYNC)
		936	const_iv (O_TTY_INIT)
		937
		938	const_iv (S_IFIFO)
		939	const_iv (S_IFCHR)
		940	const_iv (S_IFBLK)
		941	const_iv (S_IFLNK)
		942	const_iv (S_IFREG)
		943	const_iv (S_IFDIR)
		944	const_iv (S_IFWHT)
		945	const_iv (S_IFSOCK)
		946	const_iv (S_IFMT)
		947
		948	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		949	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		950	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		951	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		952	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		953	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		954
		955	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		956	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		957	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		958	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		959	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		960
		961	const_iv (ST_RDONLY)
		962	const_iv (ST_NOSUID)
		963	const_iv (ST_NODEV)
		964	const_iv (ST_NOEXEC)
		965	const_iv (ST_SYNCHRONOUS)
		966	const_iv (ST_MANDLOCK)
		967	const_iv (ST_WRITE)
		968	const_iv (ST_APPEND)
		969	const_iv (ST_IMMUTABLE)
		970	const_iv (ST_NOATIME)
		971	const_iv (ST_NODIRATIME)
		972	const_iv (ST_RELATIME)
		973
		974	const_iv (PROT_NONE)
		975	const_iv (PROT_EXEC)
		976	const_iv (PROT_READ)
		977	const_iv (PROT_WRITE)
		978
		979	/*const_iv (MAP_FIXED)*/
		980	const_iv (MAP_PRIVATE)
		981	const_iv (MAP_SHARED)
		982	const_iv (MAP_ANONYMOUS)
		983
		984	/* linuxish */
		985	const_iv (MAP_HUGETLB)
		986	const_iv (MAP_LOCKED)
		987	const_iv (MAP_NORESERVE)
		988	const_iv (MAP_POPULATE)
		989	const_iv (MAP_NONBLOCK)
		990
		991	const_iv (FIEMAP_FLAG_SYNC)
		992	const_iv (FIEMAP_FLAG_XATTR)
		993	const_iv (FIEMAP_FLAGS_COMPAT)
		994	const_iv (FIEMAP_EXTENT_LAST)
		995	const_iv (FIEMAP_EXTENT_UNKNOWN)
		996	const_iv (FIEMAP_EXTENT_DELALLOC)
		997	const_iv (FIEMAP_EXTENT_ENCODED)
		998	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		999	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1000	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1001	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1002	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1003	const_iv (FIEMAP_EXTENT_MERGED)
		1004	const_iv (FIEMAP_EXTENT_SHARED)
		1005
		1006	const_iv (SPLICE_F_MOVE)
		1007	const_iv (SPLICE_F_NONBLOCK)
		1008	const_iv (SPLICE_F_MORE)
		1009	const_iv (SPLICE_F_GIFT)
		1010
		1011	const_iv (SEEK_DATA)
		1012	const_iv (SEEK_HOLE)
		1013
		1014	/* libeio constants */
		1015	const_eio (SEEK_SET)
		1016	const_eio (SEEK_CUR)
		1017	const_eio (SEEK_END)
		1018
		1019	const_eio (MCL_FUTURE)
		1020	const_eio (MCL_CURRENT)
		1021
		1022	const_eio (MS_ASYNC)
		1023	const_eio (MS_INVALIDATE)
		1024	const_eio (MS_SYNC)
		1025
		1026	const_eio (MT_MODIFY)
		1027
		1028	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1029	const_eio (SYNC_FILE_RANGE_WRITE)
		1030	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1031
		1032	const_eio (FALLOC_FL_KEEP_SIZE)
		1033	const_eio (FALLOC_FL_PUNCH_HOLE)
		1034
		1035	const_eio (READDIR_DENTS)
		1036	const_eio (READDIR_DIRS_FIRST)
		1037	const_eio (READDIR_STAT_ORDER)
		1038	const_eio (READDIR_FOUND_UNKNOWN)
		1039
		1040	const_eio (DT_UNKNOWN)
		1041	const_eio (DT_FIFO)
		1042	const_eio (DT_CHR)
		1043	const_eio (DT_DIR)
		1044	const_eio (DT_BLK)
		1045	const_eio (DT_REG)
		1046	const_eio (DT_LNK)
		1047	const_eio (DT_SOCK)
		1048	const_eio (DT_WHT)
		1049	};
		1050
1183	HV *stash = gv_stashpv ("IO::AIO", 1);	1051	aio_stash = gv_stashpv ("IO::AIO" , 1);
1184	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1052	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1185	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1053	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1186	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1054	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1187	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1188	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1189		1055
1190	create_pipe ();	1056	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1191	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1057	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1192		1058
1193	start_thread ();	1059	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1194	}
1195		1060
		1061	reinit ();
		1062	}
		1063
1196	void	1064	void
1197	min_parallel (int nthreads)	1065	reinit ()
1198	PROTOTYPE: $	1066	PROTOTYPE:
1199		1067
1200	void	1068	void
1201	max_parallel (int nthreads)	1069	max_poll_reqs (unsigned int nreqs)
1202	PROTOTYPE: $
1203
1204	int
1205	max_outstanding (int maxreqs)
1206	PROTOTYPE: $	1070	PROTOTYPE: $
1207	CODE:	1071	CODE:
1208	RETVAL = max_outstanding;	1072	eio_set_max_poll_reqs (nreqs);
		1073
		1074	void
		1075	max_poll_time (double nseconds)
		1076	PROTOTYPE: $
		1077	CODE:
		1078	eio_set_max_poll_time (nseconds);
		1079
		1080	void
		1081	min_parallel (unsigned int nthreads)
		1082	PROTOTYPE: $
		1083	CODE:
		1084	eio_set_min_parallel (nthreads);
		1085
		1086	void
		1087	max_parallel (unsigned int nthreads)
		1088	PROTOTYPE: $
		1089	CODE:
		1090	eio_set_max_parallel (nthreads);
		1091
		1092	void
		1093	max_idle (unsigned int nthreads)
		1094	PROTOTYPE: $
		1095	CODE:
		1096	eio_set_max_idle (nthreads);
		1097
		1098	void
		1099	idle_timeout (unsigned int seconds)
		1100	PROTOTYPE: $
		1101	CODE:
		1102	eio_set_idle_timeout (seconds);
		1103
		1104	void
		1105	max_outstanding (unsigned int maxreqs)
		1106	PROTOTYPE: $
		1107	CODE:
1209	max_outstanding = maxreqs;	1108	max_outstanding = maxreqs;
1210	OUTPUT:
1211	RETVAL
1212		1109
1213	void	1110	void
1214	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1111	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1215	SV * pathname
1216	int flags
1217	int mode
1218	SV * callback
1219	PROTOTYPE: $$$;$
1220	PPCODE:	1112	PPCODE:
1221	{	1113	{
1222	dREQ;	1114	dREQ;
1223		1115
1224	req->type = REQ_OPEN;	1116	req->type = EIO_WD_OPEN;
1225	req->data = newSVsv (pathname);	1117	req_set_path1 (req, pathname);
1226	req->dataptr = SvPVbyte_nolen (req->data);
1227	req->fd = flags;
1228	req->mode = mode;
1229		1118
1230	REQ_SEND;	1119	REQ_SEND;
1231	}	1120	}
1232		1121
1233	void	1122	void
		1123	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1124	PPCODE:
		1125	{
		1126	dREQ;
		1127
		1128	req->type = EIO_OPEN;
		1129	req_set_path1 (req, pathname);
		1130	req->int1 = flags;
		1131	req->int2 = mode;
		1132
		1133	REQ_SEND;
		1134	}
		1135
		1136	void
1234	aio_close (fh,callback=&PL_sv_undef)	1137	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1235	SV * fh
1236	SV * callback
1237	PROTOTYPE: $;$
1238	ALIAS:	1138	ALIAS:
1239	aio_close = REQ_CLOSE
1240	aio_fsync = REQ_FSYNC	1139	aio_fsync = EIO_FSYNC
1241	aio_fdatasync = REQ_FDATASYNC	1140	aio_fdatasync = EIO_FDATASYNC
		1141	aio_syncfs = EIO_SYNCFS
1242	PPCODE:	1142	PPCODE:
1243	{	1143	{
		1144	int fd = s_fileno_croak (fh, 0);
1244	dREQ;	1145	dREQ;
1245		1146
1246	req->type = ix;	1147	req->type = ix;
1247	req->fh = newSVsv (fh);	1148	req->sv1 = newSVsv (fh);
1248	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1149	req->int1 = fd;
1249		1150
1250	REQ_SEND (req);	1151	REQ_SEND;
1251	}	1152	}
1252		1153
1253	void	1154	void
		1155	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1156	PPCODE:
		1157	{
		1158	int fd = s_fileno_croak (fh, 0);
		1159	dREQ;
		1160
		1161	req->type = EIO_SYNC_FILE_RANGE;
		1162	req->sv1 = newSVsv (fh);
		1163	req->int1 = fd;
		1164	req->offs = offset;
		1165	req->size = nbytes;
		1166	req->int2 = flags;
		1167
		1168	REQ_SEND;
		1169	}
		1170
		1171	void
		1172	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1173	PPCODE:
		1174	{
		1175	int fd = s_fileno_croak (fh, 0);
		1176	dREQ;
		1177
		1178	req->type = EIO_FALLOCATE;
		1179	req->sv1 = newSVsv (fh);
		1180	req->int1 = fd;
		1181	req->int2 = mode;
		1182	req->offs = offset;
		1183	req->size = len;
		1184
		1185	REQ_SEND;
		1186	}
		1187
		1188	void
		1189	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1190	PPCODE:
		1191	{
		1192	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1193	int fd = s_fileno_croak (fh, 0);
		1194	dREQ;
		1195
		1196	if (expect_false (close_fd < 0))
		1197	{
		1198	int pipefd [2];
		1199
		1200	if (
		1201	#ifdef _WIN32
		1202	_pipe (pipefd, 1, _O_BINARY) < 0
		1203	#else
		1204	pipe (pipefd) < 0
		1205	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1206	#endif
		1207	|| close (pipefd [1]) < 0
		1208	)
		1209	abort (); /*D*/
		1210
		1211	close_fd = pipefd [0];
		1212	}
		1213
		1214	req->type = EIO_DUP2;
		1215	req->int1 = close_fd;
		1216	req->sv2 = newSVsv (fh);
		1217	req->int2 = fd;
		1218
		1219	REQ_SEND;
		1220	}
		1221
		1222	void
		1223	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1224	PPCODE:
		1225	{
		1226	int fd = s_fileno_croak (fh, 0);
		1227	dREQ;
		1228
		1229	req->type = EIO_SEEK;
		1230	req->sv1 = newSVsv (fh);
		1231	req->int1 = fd;
		1232	req->offs = SvVAL64 (offset);
		1233	req->int2 = whence;
		1234
		1235	REQ_SEND;
		1236	}
		1237
		1238	void
1254	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1239	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1255	SV * fh
1256	UV offset
1257	UV length
1258	SV * data
1259	UV dataoffset
1260	SV * callback
1261	ALIAS:	1240	ALIAS:
1262	aio_read = REQ_READ	1241	aio_read = EIO_READ
1263	aio_write = REQ_WRITE	1242	aio_write = EIO_WRITE
1264	PROTOTYPE: $$$$$;$
1265	PPCODE:	1243	PPCODE:
1266	{	1244	{
1267	aio_req req;
1268	STRLEN svlen;	1245	STRLEN svlen;
		1246	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1269	char *svptr = SvPVbyte (data, svlen);	1247	char *svptr = SvPVbyte (data, svlen);
1270		1248	UV len = SvUV (length);
1271	SvUPGRADE (data, SVt_PV);
1272	SvPOK_on (data);
1273		1249
1274	if (dataoffset < 0)	1250	if (dataoffset < 0)
1275	dataoffset += svlen;	1251	dataoffset += svlen;
1276		1252
1277	if (dataoffset < 0 || dataoffset > svlen)	1253	if (dataoffset < 0 || dataoffset > svlen)
1278	croak ("data offset outside of string");	1254	croak ("dataoffset outside of data scalar");
1279		1255
1280	if (ix == REQ_WRITE)	1256	if (ix == EIO_WRITE)
1281	{	1257	{
1282	/* write: check length and adjust. */	1258	/* write: check length and adjust. */
1283	if (length < 0 || length + dataoffset > svlen)	1259	if (!SvOK (length) || len + dataoffset > svlen)
1284	length = svlen - dataoffset;	1260	len = svlen - dataoffset;
1285	}	1261	}
1286	else	1262	else
1287	{	1263	{
1288	/* read: grow scalar as necessary */	1264	/* read: check type and grow scalar as necessary */
		1265	SvUPGRADE (data, SVt_PV);
		1266	if (SvLEN (data) >= SvCUR (data))
1289	svptr = SvGROW (data, length + dataoffset);	1267	svptr = SvGROW (data, len + dataoffset + 1);
		1268	else if (SvCUR (data) < len + dataoffset)
		1269	croak ("length + dataoffset outside of scalar, and cannot grow");
1290	}	1270	}
1291
1292	if (length < 0)
1293	croak ("length must not be negative");
1294		1271
1295	{	1272	{
1296	dREQ;	1273	dREQ;
1297		1274
1298	req->type = ix;	1275	req->type = ix;
1299	req->fh = newSVsv (fh);	1276	req->sv1 = newSVsv (fh);
1300	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1277	req->int1 = fd;
1301	: IoOFP (sv_2io (fh)));	1278	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1302	req->offset = offset;	1279	req->size = len;
1303	req->length = length;
1304	req->data = SvREFCNT_inc (data);	1280	req->sv2 = SvREFCNT_inc (data);
1305	req->dataptr = (char *)svptr + dataoffset;	1281	req->ptr2 = (char *)svptr + dataoffset;
		1282	req->stroffset = dataoffset;
1306		1283
1307	if (!SvREADONLY (data))	1284	if (!SvREADONLY (data))
1308	{	1285	{
1309	SvREADONLY_on (data);	1286	SvREADONLY_on (data);
1310	req->data2ptr = (void *)data;	1287	req->flags |= FLAG_SV2_RO_OFF;
1311	}	1288	}
1312		1289
1313	REQ_SEND;	1290	REQ_SEND;
1314	}	1291	}
1315	}	1292	}
1316		1293
1317	void	1294	void
1318	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1295	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1319	SV * out_fh	1296	ALIAS:
1320	SV * in_fh	1297	aio_readlink = EIO_READLINK
1321	UV in_offset	1298	aio_realpath = EIO_REALPATH
1322	UV length
1323	SV * callback
1324	PROTOTYPE: $$$$;$
1325	PPCODE:	1299	PPCODE:
1326	{	1300	{
		1301	dREQ;
		1302
		1303	req->type = ix;
		1304	req_set_path1 (req, pathname);
		1305
		1306	REQ_SEND;
		1307	}
		1308
		1309	void
		1310	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1311	PPCODE:
		1312	{
		1313	int ifd = s_fileno_croak (in_fh , 0);
		1314	int ofd = s_fileno_croak (out_fh, 1);
1327	dREQ;	1315	dREQ;
1328		1316
1329	req->type = REQ_SENDFILE;	1317	req->type = EIO_SENDFILE;
1330	req->fh = newSVsv (out_fh);	1318	req->sv1 = newSVsv (out_fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1319	req->int1 = ofd;
1332	req->fh2 = newSVsv (in_fh);	1320	req->sv2 = newSVsv (in_fh);
1333	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1321	req->int2 = ifd;
1334	req->offset = in_offset;	1322	req->offs = in_offset;
1335	req->length = length;	1323	req->size = length;
1336		1324
1337	REQ_SEND;	1325	REQ_SEND;
1338	}	1326	}
1339		1327
1340	void	1328	void
1341	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1329	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1342	SV * fh
1343	UV offset
1344	IV length
1345	SV * callback
1346	PROTOTYPE: $$$;$
1347	PPCODE:	1330	PPCODE:
1348	{	1331	{
		1332	int fd = s_fileno_croak (fh, 0);
1349	dREQ;	1333	dREQ;
1350		1334
1351	req->type = REQ_READAHEAD;	1335	req->type = EIO_READAHEAD;
1352	req->fh = newSVsv (fh);	1336	req->sv1 = newSVsv (fh);
1353	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1337	req->int1 = fd;
1354	req->offset = offset;	1338	req->offs = offset;
1355	req->length = length;	1339	req->size = length;
1356		1340
1357	REQ_SEND;	1341	REQ_SEND;
1358	}	1342	}
1359		1343
1360	void	1344	void
1361	aio_stat (fh_or_path,callback=&PL_sv_undef)	1345	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1362	SV * fh_or_path
1363	SV * callback
1364	ALIAS:	1346	ALIAS:
1365	aio_stat = REQ_STAT	1347	aio_stat = EIO_STAT
1366	aio_lstat = REQ_LSTAT	1348	aio_lstat = EIO_LSTAT
		1349	aio_statvfs = EIO_STATVFS
1367	PPCODE:	1350	PPCODE:
1368	{	1351	{
1369	dREQ;	1352	dREQ;
1370		1353
1371	New (0, req->statdata, 1, Stat_t);	1354	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1372	if (!req->statdata)
1373	{
1374	req_free (req);
1375	croak ("out of memory during aio_req->statdata allocation");
1376	}
1377
1378	if (SvPOK (fh_or_path))
1379	{
1380	req->type = ix;
1381	req->data = newSVsv (fh_or_path);
1382	req->dataptr = SvPVbyte_nolen (req->data);
1383	}
1384	else
1385	{
1386	req->type = REQ_FSTAT;
1387	req->fh = newSVsv (fh_or_path);
1388	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1389	}
1390		1355
1391	REQ_SEND;	1356	REQ_SEND;
1392	}	1357	}
1393		1358
		1359	UV
		1360	major (UV dev)
		1361	ALIAS:
		1362	minor = 1
		1363	CODE:
		1364	RETVAL = ix ? major (dev) : minor (dev);
		1365	OUTPUT:
		1366	RETVAL
		1367
		1368	UV
		1369	makedev (UV maj, UV min)
		1370	CODE:
		1371	RETVAL = makedev (maj, min);
		1372	OUTPUT:
		1373	RETVAL
		1374
1394	void	1375	void
		1376	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1377	PPCODE:
		1378	{
		1379	dREQ;
		1380
		1381	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1382	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1383	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1384
		1385	REQ_SEND;
		1386	}
		1387
		1388	void
		1389	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1390	PPCODE:
		1391	{
		1392	dREQ;
		1393
		1394	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1395	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1396
		1397	REQ_SEND;
		1398	}
		1399
		1400	void
		1401	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1402	PPCODE:
		1403	{
		1404	dREQ;
		1405
		1406	req->int2 = mode;
		1407	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1408
		1409	REQ_SEND;
		1410	}
		1411
		1412	void
		1413	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1414	PPCODE:
		1415	{
		1416	dREQ;
		1417
		1418	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1419	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1420	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1421
		1422	REQ_SEND;
		1423	}
		1424
		1425	void
		1426	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1427	PPCODE:
		1428	{
		1429	dREQ;
		1430
		1431	req->type = EIO_READDIR;
		1432	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1433
		1434	if (flags & EIO_READDIR_DENTS)
		1435	req->int1 |= EIO_READDIR_CUSTOM2;
		1436
		1437	req_set_path1 (req, pathname);
		1438
		1439	REQ_SEND;
		1440	}
		1441
		1442	void
		1443	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1444	PPCODE:
		1445	{
		1446	dREQ;
		1447
		1448	req->type = EIO_MKDIR;
		1449	req->int2 = mode;
		1450	req_set_path1 (req, pathname);
		1451
		1452	REQ_SEND;
		1453	}
		1454
		1455	void
1395	aio_unlink (pathname,callback=&PL_sv_undef)	1456	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1396	SV * pathname
1397	SV * callback
1398	ALIAS:	1457	ALIAS:
1399	aio_unlink = REQ_UNLINK	1458	aio_unlink = EIO_UNLINK
1400	aio_rmdir = REQ_RMDIR	1459	aio_rmdir = EIO_RMDIR
1401	aio_readdir = REQ_READDIR	1460	aio_readdir = EIO_READDIR
1402	PPCODE:	1461	PPCODE:
1403	{	1462	{
1404	dREQ;	1463	dREQ;
1405		1464
1406	req->type = ix;	1465	req->type = ix;
1407	req->data = newSVsv (pathname);	1466	req_set_path1 (req, pathname);
1408	req->dataptr = SvPVbyte_nolen (req->data);	1467
1409
1410	REQ_SEND;	1468	REQ_SEND;
1411	}	1469	}
1412		1470
1413	void	1471	void
1414	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1472	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1415	SV * oldpath
1416	SV * newpath
1417	SV * callback
1418	ALIAS:	1473	ALIAS:
1419	aio_link = REQ_LINK	1474	aio_link = EIO_LINK
1420	aio_symlink = REQ_SYMLINK	1475	aio_symlink = EIO_SYMLINK
1421	aio_rename = REQ_RENAME	1476	aio_rename = EIO_RENAME
1422	PPCODE:	1477	PPCODE:
1423	{	1478	{
		1479	eio_wd wd2 = 0;
1424	dREQ;	1480	dREQ;
1425		1481
1426	req->type = ix;	1482	req->type = ix;
1427	req->fh = newSVsv (oldpath);	1483	req_set_path1 (req, oldpath);
1428	req->data2ptr = SvPVbyte_nolen (req->fh);	1484	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1429	req->data = newSVsv (newpath);	1485	req->int3 = (long)wd2;
1430	req->dataptr = SvPVbyte_nolen (req->data);
1431		1486
1432	REQ_SEND;	1487	REQ_SEND;
1433	}	1488	}
1434		1489
1435	void	1490	void
1436	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1491	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1437	SV * pathname
1438	SV * callback
1439	UV mode
1440	UV dev
1441	PPCODE:	1492	PPCODE:
1442	{	1493	{
1443	dREQ;	1494	dREQ;
1444		1495
1445	req->type = REQ_MKNOD;	1496	req->type = EIO_MKNOD;
1446	req->data = newSVsv (pathname);
1447	req->dataptr = SvPVbyte_nolen (req->data);
1448	req->mode = (mode_t)mode;	1497	req->int2 = (mode_t)mode;
1449	req->offset = dev;	1498	req->offs = dev;
		1499	req_set_path1 (req, pathname);
1450		1500
1451	REQ_SEND;	1501	REQ_SEND;
1452	}	1502	}
1453		1503
1454	void	1504	void
		1505	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1506	ALIAS:
		1507	aio_mtouch = EIO_MTOUCH
		1508	aio_msync = EIO_MSYNC
		1509	PPCODE:
		1510	{
		1511	STRLEN svlen;
		1512	char *svptr = SvPVbyte (data, svlen);
		1513	UV len = SvUV (length);
		1514
		1515	if (offset < 0)
		1516	offset += svlen;
		1517
		1518	if (offset < 0 || offset > svlen)
		1519	croak ("offset outside of scalar");
		1520
		1521	if (!SvOK (length) || len + offset > svlen)
		1522	len = svlen - offset;
		1523
		1524	{
		1525	dREQ;
		1526
		1527	req->type = ix;
		1528	req->sv2 = SvREFCNT_inc (data);
		1529	req->ptr2 = (char *)svptr + offset;
		1530	req->size = len;
		1531	req->int1 = flags;
		1532
		1533	REQ_SEND;
		1534	}
		1535	}
		1536
		1537	void
		1538	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1539	PPCODE:
		1540	{
		1541	STRLEN svlen;
		1542	char *svptr = SvPVbyte (data, svlen);
		1543	UV len = SvUV (length);
		1544
		1545	if (offset < 0)
		1546	offset += svlen;
		1547
		1548	if (offset < 0 || offset > svlen)
		1549	croak ("offset outside of scalar");
		1550
		1551	if (!SvOK (length) || len + offset > svlen)
		1552	len = svlen - offset;
		1553
		1554	{
		1555	dREQ;
		1556
		1557	req->type = EIO_MLOCK;
		1558	req->sv2 = SvREFCNT_inc (data);
		1559	req->ptr2 = (char *)svptr + offset;
		1560	req->size = len;
		1561
		1562	REQ_SEND;
		1563	}
		1564	}
		1565
		1566	void
		1567	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1568	PPCODE:
		1569	{
		1570	dREQ;
		1571
		1572	req->type = EIO_MLOCKALL;
		1573	req->int1 = flags;
		1574
		1575	REQ_SEND;
		1576	}
		1577
		1578	void
		1579	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1580	PPCODE:
		1581	{
		1582	int fd = s_fileno_croak (fh, 0);
		1583	dREQ;
		1584
		1585	req->type = EIO_CUSTOM;
		1586	req->sv1 = newSVsv (fh);
		1587	req->int1 = fd;
		1588
		1589	req->feed = fiemap;
		1590	#if HAVE_FIEMAP
		1591	/* keep our fingers crossed that the next two types are 64 bit */
		1592	req->offs = start;
		1593	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1594	req->int2 = flags;
		1595	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1596	#endif
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
1455	aio_busy (delay,callback=&PL_sv_undef)	1602	aio_busy (double delay, SV *callback=&PL_sv_undef)
1456	double delay
1457	SV * callback
1458	PPCODE:	1603	PPCODE:
1459	{	1604	{
1460	dREQ;	1605	dREQ;
1461		1606
1462	req->type = REQ_BUSY;	1607	req->type = EIO_BUSY;
1463	req->fd = delay < 0. ? 0 : delay;	1608	req->nv1 = delay < 0. ? 0. : delay;
1464	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1465		1609
1466	REQ_SEND;	1610	REQ_SEND;
1467	}	1611	}
1468		1612
1469	void	1613	void
1470	aio_group (callback=&PL_sv_undef)	1614	aio_group (SV *callback=&PL_sv_undef)
1471	SV * callback
1472	PROTOTYPE: ;$
1473	PPCODE:	1615	PPCODE:
1474	{	1616	{
1475	dREQ;	1617	dREQ;
1476		1618
1477	req->type = REQ_GROUP;	1619	req->type = EIO_GROUP;
		1620
		1621	PUTBACK;
1478	req_send (req);	1622	req_submit (req);
		1623	SPAGAIN;
1479		1624
1480	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1625	XPUSHs (req_sv (req, aio_grp_stash));
1481	}	1626	}
1482		1627
1483	void	1628	void
1484	aio_nop (callback=&PL_sv_undef)	1629	aio_nop (SV *callback=&PL_sv_undef)
1485	SV * callback	1630	ALIAS:
		1631	aio_nop = EIO_NOP
		1632	aio_sync = EIO_SYNC
1486	PPCODE:	1633	PPCODE:
1487	{	1634	{
1488	dREQ;	1635	dREQ;
1489		1636
1490	req->type = REQ_NOP;	1637	req->type = ix;
1491		1638
1492	REQ_SEND;	1639	REQ_SEND;
1493	}	1640	}
1494		1641
1495	int	1642	int
1496	aioreq_pri (int pri = 0)	1643	aioreq_pri (int pri = 0)
1497	PROTOTYPE: ;$
1498	CODE:	1644	CODE:
1499	RETVAL = next_pri - PRI_BIAS;	1645	RETVAL = next_pri;
1500	if (items > 0)	1646	if (items > 0)
1501	{	1647	{
1502	if (pri < PRI_MIN) pri = PRI_MIN;	1648	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1503	if (pri > PRI_MAX) pri = PRI_MAX;	1649	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1504	next_pri = pri + PRI_BIAS;	1650	next_pri = pri;
1505	}	1651	}
1506	OUTPUT:	1652	OUTPUT:
1507	RETVAL	1653	RETVAL
1508		1654
1509	void	1655	void
1510	aioreq_nice (int nice = 0)	1656	aioreq_nice (int nice = 0)
1511	CODE:	1657	CODE:
1512	nice = next_pri - nice;	1658	nice = next_pri - nice;
1513	if (nice < PRI_MIN) nice = PRI_MIN;	1659	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1514	if (nice > PRI_MAX) nice = PRI_MAX;	1660	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1515	next_pri = nice + PRI_BIAS;	1661	next_pri = nice;
1516		1662
1517	void	1663	void
1518	flush ()	1664	flush ()
		1665	CODE:
		1666	while (eio_nreqs ())
		1667	{
		1668	poll_wait ();
		1669	poll_cb ();
		1670	}
		1671
		1672	int
		1673	poll ()
		1674	CODE:
		1675	poll_wait ();
		1676	RETVAL = poll_cb ();
		1677	OUTPUT:
		1678	RETVAL
		1679
		1680	int
		1681	poll_fileno ()
		1682	CODE:
		1683	RETVAL = s_epipe_fd (&respipe);
		1684	OUTPUT:
		1685	RETVAL
		1686
		1687	int
		1688	poll_cb (...)
1519	PROTOTYPE:	1689	PROTOTYPE:
1520	CODE:	1690	CODE:
1521	while (nreqs)
1522	{
1523	poll_wait ();
1524	poll_cb (0);	1691	RETVAL = poll_cb ();
1525	}
1526
1527	void
1528	poll()
1529	PROTOTYPE:
1530	CODE:
1531	if (nreqs)
1532	{
1533	poll_wait ();
1534	poll_cb (0);
1535	}
1536
1537	int
1538	poll_fileno()
1539	PROTOTYPE:
1540	CODE:
1541	RETVAL = respipe [0];
1542	OUTPUT:	1692	OUTPUT:
1543	RETVAL	1693	RETVAL
1544		1694
		1695	void
		1696	poll_wait ()
		1697	CODE:
		1698	poll_wait ();
		1699
1545	int	1700	int
1546	poll_cb(...)	1701	nreqs ()
1547	PROTOTYPE:
1548	CODE:	1702	CODE:
1549	RETVAL = poll_cb (0);	1703	RETVAL = eio_nreqs ();
1550	OUTPUT:	1704	OUTPUT:
1551	RETVAL	1705	RETVAL
1552		1706
1553	int	1707	int
1554	poll_some(int max = 0)	1708	nready ()
1555	PROTOTYPE: $
1556	CODE:	1709	CODE:
1557	RETVAL = poll_cb (max);	1710	RETVAL = eio_nready ();
1558	OUTPUT:	1711	OUTPUT:
1559	RETVAL	1712	RETVAL
1560		1713
1561	void	1714	int
1562	poll_wait()	1715	npending ()
1563	PROTOTYPE:
1564	CODE:	1716	CODE:
1565	if (nreqs)	1717	RETVAL = eio_npending ();
1566	poll_wait ();
1567
1568	int
1569	nreqs()
1570	PROTOTYPE:
1571	CODE:
1572	RETVAL = nreqs;
1573	OUTPUT:	1718	OUTPUT:
1574	RETVAL	1719	RETVAL
1575		1720
1576	int	1721	int
1577	nready()	1722	nthreads ()
1578	PROTOTYPE:
1579	CODE:	1723	CODE:
1580	RETVAL = get_nready ();	1724	RETVAL = eio_nthreads ();
1581	OUTPUT:	1725	OUTPUT:
1582	RETVAL	1726	RETVAL
1583		1727
1584	int	1728	int
1585	npending()	1729	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1586	PROTOTYPE:	1730	CODE:
		1731	RETVAL = posix_fadvise (fh, offset, length, advice);
		1732	OUTPUT:
		1733	RETVAL
		1734
		1735	IV
		1736	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1737	CODE:
		1738	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1739	OUTPUT:
		1740	RETVAL
		1741
		1742	void
		1743	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1744	PPCODE:
		1745	sv_unmagic (scalar, MMAP_MAGIC);
		1746	{
		1747	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1748	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1749	if (addr == (void *)-1)
		1750	XSRETURN_NO;
		1751
		1752	sv_force_normal (scalar);
		1753
		1754	/* we store the length in mg_obj, as namlen is I32 :/ */
		1755	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1756	->mg_obj = (SV *)length;
		1757
		1758	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1759
		1760	if (!(prot & PROT_WRITE))
		1761	SvREADONLY_on (scalar);
		1762
		1763	if (SvLEN (scalar))
		1764	Safefree (SvPVX (scalar));
		1765
		1766	SvPVX (scalar) = (char *)addr;
		1767	SvCUR_set (scalar, length);
		1768	SvLEN_set (scalar, 0);
		1769	SvPOK_only (scalar);
		1770
		1771	XSRETURN_YES;
		1772	}
		1773
		1774	void
		1775	munmap (SV *scalar)
1587	CODE:	1776	CODE:
1588	RETVAL = get_npending ();	1777	sv_unmagic (scalar, MMAP_MAGIC);
		1778
		1779	int
		1780	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1781	ALIAS:
		1782	mprotect = 1
		1783	CODE:
		1784	{
		1785	STRLEN svlen;
		1786	void *addr = SvPVbyte (scalar, svlen);
		1787	size_t len = SvUV (length);
		1788
		1789	if (offset < 0)
		1790	offset += svlen;
		1791
		1792	if (offset < 0 || offset > svlen)
		1793	croak ("offset outside of scalar");
		1794
		1795	if (!SvOK (length) || len + offset > svlen)
		1796	len = svlen - offset;
		1797
		1798	addr = (void *)(((intptr_t)addr) + offset);
		1799	eio_page_align (&addr, &len);
		1800
		1801	switch (ix)
		1802	{
		1803	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1804	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1805	}
		1806	}
1589	OUTPUT:	1807	OUTPUT:
1590	RETVAL	1808	RETVAL
		1809
		1810	int
		1811	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1812	CODE:
		1813	{
		1814	STRLEN svlen;
		1815	void *addr = SvPVbyte (scalar, svlen);
		1816	size_t len = SvUV (length);
		1817
		1818	if (offset < 0)
		1819	offset += svlen;
		1820
		1821	if (offset < 0 || offset > svlen)
		1822	croak ("offset outside of scalar");
		1823
		1824	if (!SvOK (length) || len + offset > svlen)
		1825	len = svlen - offset;
		1826
		1827	addr = (void *)(((intptr_t)addr) + offset);
		1828	eio_page_align (&addr, &len);
		1829	#if _POSIX_MEMLOCK_RANGE
		1830	RETVAL = munlock (addr, len);
		1831	#else
		1832	RETVAL = EIO_ENOSYS ();
		1833	#endif
		1834	}
		1835	OUTPUT:
		1836	RETVAL
		1837
		1838	int
		1839	munlockall ()
		1840	CODE:
		1841	#if _POSIX_MEMLOCK
		1842	munlockall ();
		1843	#else
		1844	RETVAL = EIO_ENOSYS ();
		1845	#endif
		1846	OUTPUT:
		1847	RETVAL
		1848
		1849	int
		1850	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1851	CODE:
		1852	{
		1853	#if HAVE_LINUX_SPLICE
		1854	loff_t off_in_, off_out_;
		1855	RETVAL = splice (
		1856	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1857	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1858	length, flags
		1859	);
		1860	#else
		1861	RETVAL = EIO_ENOSYS ();
		1862	#endif
		1863	}
		1864	OUTPUT:
		1865	RETVAL
		1866
		1867	int
		1868	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1869	CODE:
		1870	#if HAVE_LINUX_SPLICE
		1871	RETVAL = tee (rfh, wfh, length, flags);
		1872	#else
		1873	RETVAL = EIO_ENOSYS ();
		1874	#endif
		1875	OUTPUT:
		1876	RETVAL
		1877
		1878	int
		1879	pipesize (aio_rfd rfh, int new_size = -1)
		1880	PROTOTYPE: $;$
		1881	CODE:
		1882	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1883	if (new_size >= 0)
		1884	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1885	else
		1886	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1887	#else
		1888	errno = ENOSYS;
		1889	RETVAL = -1;
		1890	#endif
		1891	OUTPUT:
		1892	RETVAL
		1893
		1894	void _on_next_submit (SV *cb)
		1895	CODE:
		1896	SvREFCNT_dec (on_next_submit);
		1897	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1591		1898
1592	PROTOTYPES: DISABLE	1899	PROTOTYPES: DISABLE
		1900
		1901	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1902
		1903	BOOT:
		1904	{
		1905	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1906	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1907	}
		1908
		1909	void
		1910	DESTROY (SV *self)
		1911	CODE:
		1912	{
		1913	aio_wd wd = SvAIO_WD (self);
		1914	#if HAVE_AT
		1915	{
		1916	SV *callback = &PL_sv_undef;
		1917	dREQ; /* clobbers next_pri :/ */
		1918	next_pri = req->pri; /* restore next_pri */
		1919	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1920	req->type = EIO_WD_CLOSE;
		1921	req->wd = wd;
		1922	REQ_SEND;
		1923	}
		1924	#else
		1925	eio_wd_close_sync (wd);
		1926	#endif
		1927	}
1593		1928
1594	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1929	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1595		1930
1596	void	1931	void
1597	cancel (aio_req_ornot req)	1932	cancel (aio_req_ornot req)
1598	CODE:	1933	CODE:
1599	req_cancel (req);	1934	eio_cancel (req);
1600		1935
1601	void	1936	void
1602	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1937	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1603	CODE:	1938	PPCODE:
		1939	{
		1940	if (GIMME_V != G_VOID)
		1941	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1942
		1943	if (items > 1)
		1944	{
		1945	SV *cb_cv =get_cb (callback);
		1946
1604	SvREFCNT_dec (req->callback);	1947	SvREFCNT_dec (req->callback);
1605	req->callback = newSVsv (callback);	1948	req->callback = SvREFCNT_inc (cb_cv);
		1949	}
		1950	}
1606		1951
1607	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1952	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1608		1953
1609	void	1954	void
1610	add (aio_req grp, ...)	1955	add (aio_req grp, ...)
1611	PPCODE:	1956	PPCODE:
1612	{	1957	{
1613	int i;	1958	int i;
1614	aio_req req;
1615		1959
1616	if (grp->fd == 2)	1960	if (grp->int1 == 2)
1617	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1961	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1618		1962
1619	for (i = 1; i < items; ++i )	1963	for (i = 1; i < items; ++i )
1620	{	1964	{
		1965	aio_req req;
		1966
1621	if (GIMME_V != G_VOID)	1967	if (GIMME_V != G_VOID)
1622	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1968	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1623		1969
1624	req = SvAIO_REQ (ST (i));	1970	req = SvAIO_REQ (ST (i));
1625		1971
1626	if (req)	1972	if (req)
1627	{	1973	eio_grp_add (grp, req);
1628	++grp->length;
1629	req->grp = grp;
1630
1631	req->grp_prev = 0;
1632	req->grp_next = grp->grp_first;
1633
1634	if (grp->grp_first)
1635	grp->grp_first->grp_prev = req;
1636
1637	grp->grp_first = req;
1638	}
1639	}	1974	}
1640	}	1975	}
1641		1976
1642	void	1977	void
1643	cancel_subs (aio_req_ornot req)	1978	cancel_subs (aio_req_ornot req)
…		…
1652	AV *av;	1987	AV *av;
1653		1988
1654	grp->errorno = errno;	1989	grp->errorno = errno;
1655		1990
1656	av = newAV ();	1991	av = newAV ();
		1992	av_extend (av, items - 1);
1657		1993
1658	for (i = 1; i < items; ++i )	1994	for (i = 1; i < items; ++i )
1659	av_push (av, newSVsv (ST (i)));	1995	av_push (av, newSVsv (ST (i)));
1660		1996
1661	SvREFCNT_dec (grp->data);	1997	SvREFCNT_dec (grp->sv1);
1662	grp->data = (SV *)av;	1998	grp->sv1 = (SV *)av;
1663	}	1999	}
1664		2000
1665	void	2001	void
1666	errno (aio_req grp, int errorno = errno)	2002	errno (aio_req grp, int errorno = errno)
1667	CODE:	2003	CODE:
1668	grp->errorno = errorno;	2004	grp->errorno = errorno;
1669		2005
1670	void	2006	void
1671	limit (aio_req grp, int limit)	2007	limit (aio_req grp, int limit)
1672	CODE:	2008	CODE:
1673	grp->fd2 = limit;	2009	eio_grp_limit (grp, limit);
1674	aio_grp_feed (grp);
1675		2010
1676	void	2011	void
1677	feed (aio_req grp, SV *callback=&PL_sv_undef)	2012	feed (aio_req grp, SV *callback=&PL_sv_undef)
1678	CODE:	2013	CODE:
1679	{	2014	{
1680	SvREFCNT_dec (grp->fh2);	2015	SvREFCNT_dec (grp->sv2);
1681	grp->fh2 = newSVsv (callback);	2016	grp->sv2 = newSVsv (callback);
		2017	grp->feed = aio_grp_feed;
1682		2018
1683	if (grp->fd2 <= 0)	2019	if (grp->int2 <= 0)
1684	grp->fd2 = 2;	2020	grp->int2 = 2;
1685		2021
1686	aio_grp_feed (grp);	2022	eio_grp_limit (grp, grp->int2);
1687	}	2023	}
1688		2024

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