[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.242 by root, Tue Jul 12 20:46:33 2016 UTC

1	#define PERL_NO_GET_CONTEXT	1	#include "libeio/xthread.h"
		2
		3	#include <errno.h>
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
		9	#include "schmorp.h"
		10
		11	#include <stddef.h>
		12	#include <stdlib.h>
		13	#include <errno.h>
7	#include <sys/types.h>	14	#include <sys/types.h>
8	#include <sys/stat.h>	15	#include <sys/stat.h>
9	#include <unistd.h>	16	#include <limits.h>
10	#include <fcntl.h>	17	#include <fcntl.h>
11	#include <signal.h>
12	#include <sched.h>	18	#include <sched.h>
13	#include <endian.h>
14		19
15	#include <pthread.h>	20	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
16	#include <sys/syscall.h>	21	# include <sys/mman.h>
		22	#endif
17		23
18	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	24	/* the incompetent fool that created musl keeps __linux__, refuses
19	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	25	* to implement any linux standard apis, and also has no way to test
20	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	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
21		36
22	#if __i386 \|\| __amd64	37	/* perl namespace pollution */
23	# define STACKSIZE ( 256 * sizeof (long))	38	#undef VERSION
24	#elif __ia64	39
25	# define STACKSIZE (8192 * sizeof (long))	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
26	#else	83	#else
27	# define STACKSIZE ( 512 * sizeof (long))	84
		85	#include <sys/time.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
		144	# else
		145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28	#endif	146	# endif
		147	#endif
		148
		149	/* defines all sorts of constants to 0 unless they are already defined */
		150	/* also provides const_iv_ and const_niv_ macros for them */
		151	#include "def0.h"
		152
		153	#ifndef makedev
		154	# define makedev(maj,min) (((maj) << 8) \| (min))
		155	#endif
		156	#ifndef major
		157	# define major(dev) ((dev) >> 8)
		158	#endif
		159	#ifndef minor
		160	# define minor(dev) ((dev) & 0xff)
		161	#endif
		162
		163	#if PAGESIZE <= 0
		164	# define PAGESIZE sysconf (_SC_PAGESIZE)
		165	#endif
		166
		167	/*****************************************************************************/
		168
		169	static void
		170	fiemap (eio_req *req)
		171	{
		172	req->result = -1;
		173
		174	#if HAVE_FIEMAP
		175	/* assume some c99 */
		176	struct fiemap *fiemap = 0;
		177	size_t end_offset;
		178	int count = req->int3;
		179
		180	req->flags \|= EIO_FLAG_PTR1_FREE;
		181
		182	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		183	/* increase in 3.5kb steps */
		184	if (count < 0)
		185	count = 8;
		186
		187	fiemap = malloc (sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		188	errno = ENOMEM;
		189	if (!fiemap)
		190	return;
		191
		192	req->ptr1 = fiemap;
		193
		194	fiemap->fm_start = req->offs;
		195	fiemap->fm_length = req->size;
		196	fiemap->fm_flags = req->int2;
		197	fiemap->fm_extent_count = count;
		198
		199	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		200	return;
		201
		202	if (req->int3 >= 0 /* not autosizing */
		203	\|\| !fiemap->fm_mapped_extents /* no more extents */
		204	\|\| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		205	goto done;
		206
		207	/* else we have to loop -
		208	* it would be tempting (actually I tried that first) to just query the
		209	* number of extents needed, but linux often feels like not returning all
		210	* extents, without telling us it left any out. this complicates
		211	* this quite a bit.
		212	*/
		213
		214	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
		215
		216	for (;;)
		217	{
		218	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
		219	char scratch[3072];
		220	struct fiemap incmap = (struct fiemap )scratch;
		221
		222	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		223	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		224	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		225	incmap->fm_flags = fiemap->fm_flags;
		226	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		227
		228	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		229	return;
		230
		231	if (!incmap->fm_mapped_extents)
		232	goto done;
		233
		234	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		235	fiemap = realloc (fiemap, sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		236	errno = ENOMEM;
		237	if (!fiemap)
		238	return;
		239
		240	req->ptr1 = fiemap;
		241
		242	for (count = 0; count < incmap->fm_mapped_extents; ++count)
		243	{
		244	struct fiemap_extent *e = incmap->fm_extents + count;
		245
		246	if (e->fe_logical + e->fe_length >= end_offset)
		247	goto done;
		248
		249	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		250
		251	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		252	goto done;
		253
		254	}
		255	}
		256
		257	done:
		258	req->result = 0;
		259
		260	#else
		261	errno = ENOSYS;
		262	#endif
		263	}
		264
		265	/*****************************************************************************/
29		266
30	enum {	267	enum {
31	REQ_QUIT,	268	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
32	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
35	REQ_FSYNC, REQ_FDATASYNC,
36	};	269	};
37		270
38	typedef struct aio_cb {
39	struct aio_cb *next;
40
41	int type;
42
43	int fd;
44	off_t offset;
45	size_t length;
46	ssize_t result;
47	mode_t mode; /* open */
48	int errorno;
49	SV data, callback;
50	void *dataptr;
51	STRLEN dataoffset;
52
53	Stat_t *statdata;
54	} aio_cb;
55
56	typedef aio_cb *aio_req;	271	typedef eio_req *aio_req;
		272	typedef eio_req *aio_req_ornot;
		273	typedef eio_wd aio_wd;
57		274
58	static int started;	275	static SV *on_next_submit;
59	static int nreqs;	276	static int next_pri = EIO_PRI_DEFAULT;
60	static int reqpipe[2], respipe[2];	277	static int max_outstanding;
61		278
62	static aio_req qs, qe; /* queue start, queue end */	279	static s_epipe respipe;
63		280
64	static void aio_proc(void arg);	281	static void req_destroy (aio_req req);
		282	static void req_cancel (aio_req req);
65		283
66	static void	284	static void
67	start_thread (void)	285	want_poll (void)
68	{	286	{
69	sigset_t fullsigset, oldsigset;	287	/* write a dummy byte to the pipe so fh becomes ready */
70	pthread_t tid;	288	s_epipe_signal (&respipe);
71	pthread_attr_t attr;
72
73	pthread_attr_init (&attr);
74	pthread_attr_setstacksize (&attr, STACKSIZE);
75	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
76
77	sigfillset (&fullsigset);
78	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
79
80	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
81	started++;
82
83	sigprocmask (SIG_SETMASK, &oldsigset, 0);
84	}	289	}
85		290
86	static void	291	static void
87	send_reqs (void)	292	done_poll (void)
88	{	293	{
89	/* this write is atomic */	294	/* read any signals sent by the worker threads */
90	while (qs && write (reqpipe[1], &qs, sizeof qs) == sizeof qs)	295	s_epipe_drain (&respipe);
		296	}
		297
		298	/* must be called at most once */
		299	static SV *
		300	req_sv (aio_req req, HV *stash)
		301	{
		302	if (!req->self)
91	{	303	{
92	qs = qs->next;	304	req->self = (SV *)newHV ();
93	if (!qs) qe = 0;	305	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
94	}	306	}
		307
		308	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		309	}
		310
		311	static SV *
		312	newSVaio_wd (aio_wd wd)
		313	{
		314	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		315	}
		316
		317	static aio_req
		318	SvAIO_REQ (SV *sv)
		319	{
		320	MAGIC *mg;
		321
		322	if (!SvROK (sv)
		323	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		324	\|\| (SvSTASH (SvRV (sv)) != aio_grp_stash
		325	&& SvSTASH (SvRV (sv)) != aio_req_stash
		326	&& !sv_derived_from (sv, "IO::AIO::REQ")))
		327	croak ("object of class IO::AIO::REQ expected");
		328
		329	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		330
		331	return mg ? (aio_req)mg->mg_ptr : 0;
		332	}
		333
		334	static aio_wd
		335	SvAIO_WD (SV *sv)
		336	{
		337	if (!SvROK (sv)
		338	\|\| SvTYPE (SvRV (sv)) != SVt_PVMG
		339	\|\| SvSTASH (SvRV (sv)) != aio_wd_stash)
		340	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		341
		342	return (aio_wd)(long)SvIVX (SvRV (sv));
		343	}
		344
		345	static SV *
		346	newmortalFH (int fd, int flags)
		347	{
		348	if (fd < 0)
		349	return &PL_sv_undef;
		350
		351	GV gv = (GV )sv_newmortal ();
		352	char sym[64];
		353	int symlen;
		354
		355	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		356	gv_init (gv, aio_stash, sym, symlen, 0);
		357
		358	symlen = snprintf (
		359	sym,
		360	sizeof (sym),
		361	"%s&=%d",
		362	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		363	fd
		364	);
		365
		366	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		367	? (SV *)gv : &PL_sv_undef;
95	}	368	}
96		369
97	static void	370	static void
98	send_req (aio_req req)	371	aio_grp_feed (aio_req grp)
99	{	372	{
100	nreqs++;	373	if (grp->sv2 && SvOK (grp->sv2))
101	req->next = 0;
102
103	if (qe)
104	{	374	{
105	qe->next = req;	375	dSP;
106	qe = req;	376
		377	ENTER;
		378	SAVETMPS;
		379	PUSHMARK (SP);
		380	XPUSHs (req_sv (grp, aio_grp_stash));
		381	PUTBACK;
		382	call_sv (grp->sv2, G_VOID \| G_EVAL \| G_KEEPERR);
		383	SPAGAIN;
		384	FREETMPS;
		385	LEAVE;
107	}	386	}
108	else
109	qe = qs = req;
110
111	send_reqs ();
112	}	387	}
113		388
114	static void	389	static void
115	end_thread (void)	390	req_submit (eio_req *req)
116	{	391	{
117	aio_req req;	392	eio_submit (req);
118	New (0, req, 1, aio_cb);
119	req->type = REQ_QUIT;
120		393
121	send_req (req);	394	if (expect_false (on_next_submit))
122	}
123
124	static void
125	read_write (pTHX_
126	int dowrite, int fd, off_t offset, size_t length,
127	SV data, STRLEN dataoffset, SV callback)
128	{
129	aio_req req;
130	STRLEN svlen;
131	char *svptr = SvPV (data, svlen);
132
133	SvUPGRADE (data, SVt_PV);
134	SvPOK_on (data);
135
136	if (dataoffset < 0)
137	dataoffset += svlen;
138
139	if (dataoffset < 0 \|\| dataoffset > svlen)
140	croak ("data offset outside of string");
141
142	if (dowrite)
143	{	395	{
144	/* write: check length and adjust. */	396	dSP;
145	if (length < 0 \|\| length + dataoffset > svlen)	397	SV *cb = sv_2mortal (on_next_submit);
146	length = svlen - dataoffset;	398
		399	on_next_submit = 0;
		400
		401	PUSHMARK (SP);
		402	PUTBACK;
		403	call_sv (cb, G_DISCARD \| G_EVAL);
147	}	404	}
148	else	405	}
		406
		407	static int
		408	req_invoke (eio_req *req)
		409	{
		410	if (req->flags & FLAG_SV2_RO_OFF)
		411	SvREADONLY_off (req->sv2);
		412
		413	if (!EIO_CANCELLED (req) && req->callback)
149	{	414	{
150	/* read: grow scalar as necessary */
151	svptr = SvGROW (data, length + dataoffset);
152	}
153
154	if (length < 0)
155	croak ("length must not be negative");
156
157	Newz (0, req, 1, aio_cb);
158
159	if (!req)
160	croak ("out of memory during aio_req allocation");
161
162	req->type = dowrite ? REQ_WRITE : REQ_READ;
163	req->fd = fd;
164	req->offset = offset;
165	req->length = length;
166	req->data = SvREFCNT_inc (data);
167	req->dataptr = (char *)svptr + dataoffset;
168	req->callback = SvREFCNT_inc (callback);
169
170	send_req (req);
171	}
172
173	static void
174	poll_wait ()
175	{
176	fd_set rfd;
177	FD_ZERO(&rfd);
178	FD_SET(respipe[0], &rfd);
179
180	select (respipe[0] + 1, &rfd, 0, 0, 0);
181	}
182
183	static int
184	poll_cb (pTHX)
185	{
186	dSP;	415	dSP;
187	int count = 0;	416	static SV sv_result_cache; / caches the result integer SV */
188	aio_req req;	417	SV *sv_result;
189		418
190	while (read (respipe[0], (void *)&req, sizeof (req)) == sizeof (req))	419	ENTER;
191	{	420	SAVETMPS;
192	nreqs--;	421	PUSHMARK (SP);
		422	EXTEND (SP, 1);
193		423
194	if (req->type == REQ_QUIT)	424	/* do not recreate the result IV from scratch each time */
195	started--;	425	if (expect_true (sv_result_cache))
		426	{
		427	sv_result = sv_result_cache; sv_result_cache = 0;
		428	SvIV_set (sv_result, req->result);
		429	SvIOK_only (sv_result);
		430	}
196	else	431	else
197	{	432	{
198	int errorno = errno;
199	errno = req->errorno;
200
201	if (req->type == REQ_READ)
202	SvCUR_set (req->data, req->dataoffset
203	+ req->result > 0 ? req->result : 0);
204
205	if (req->data)
206	SvREFCNT_dec (req->data);
207
208	if (req->type == REQ_STAT \|\| req->type == REQ_LSTAT \|\| req->type == REQ_FSTAT)
209	{
210	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
211	PL_laststatval = req->result;
212	PL_statcache = *(req->statdata);
213
214	Safefree (req->statdata);
215	}
216
217	PUSHMARK (SP);
218	XPUSHs (sv_2mortal (newSViv (req->result)));	433	sv_result = newSViv (req->result);
219	PUTBACK;	434	SvREADONLY_on (sv_result);
220	call_sv (req->callback, G_VOID);
221	SPAGAIN;
222
223	if (req->callback)
224	SvREFCNT_dec (req->callback);
225
226	errno = errorno;
227	count++;
228	}	435	}
229
230	Safefree (req);
231	}
232
233	if (qs)
234	send_reqs ();
235
236	return count;
237	}
238
239	static void *
240	aio_proc (void *thr_arg)
241	{
242	aio_req req;
243
244	/* then loop */
245	while (read (reqpipe[0], (void *)&req, sizeof (req)) == sizeof (req))
246	{
247	errno = 0; /* strictly unnecessary */
248		436
249	switch (req->type)	437	switch (req->type)
250	{	438	{
251	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	439	case EIO_WD_OPEN:
252	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	440	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
253	#if SYS_readahead	441	break;
254	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
255	#else
256	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;
257	#endif
258		442
259	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	443	case EIO_READDIR:
260	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	444	{
261	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	445	SV *rv = &PL_sv_undef;
262		446
263	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	447	if (req->result >= 0)
264	case REQ_CLOSE: req->result = close (req->fd); break;	448	{
265	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	449	int i;
		450	char names = (char )req->ptr2;
		451	eio_dirent ent = (eio_dirent )req->ptr1; /* might be 0 */
		452	AV *av = newAV ();
266		453
267	case REQ_FSYNC: req->result = fsync (req->fd); break;	454	av_extend (av, req->result - 1);
268	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
269		455
		456	for (i = 0; i < req->result; ++i)
		457	{
		458	if (req->int1 & EIO_READDIR_DENTS)
		459	{
		460	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		461
		462	if (req->int1 & EIO_READDIR_CUSTOM2)
		463	{
		464	static SV sv_type [EIO_DT_MAX + 1]; / type sv cache */
		465	AV *avent = newAV ();
		466
		467	av_extend (avent, 2);
		468
		469	if (!sv_type [ent->type])
		470	{
		471	sv_type [ent->type] = newSViv (ent->type);
		472	SvREADONLY_on (sv_type [ent->type]);
		473	}
		474
		475	av_store (avent, 0, namesv);
		476	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		477	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		478
		479	av_store (av, i, newRV_noinc ((SV *)avent));
		480	}
		481	else
		482	av_store (av, i, namesv);
		483
		484	++ent;
		485	}
		486	else
		487	{
		488	SV *name = newSVpv (names, 0);
		489	av_store (av, i, name);
		490	names += SvCUR (name) + 1;
		491	}
		492	}
		493
		494	rv = sv_2mortal (newRV_noinc ((SV *)av));
		495	}
		496
		497	PUSHs (rv);
		498
		499	if (req->int1 & EIO_READDIR_CUSTOM1)
		500	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 \| EIO_READDIR_CUSTOM2))));
		501	}
		502	break;
		503
		504	case EIO_OPEN:
		505	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY \| O_WRONLY \| O_RDWR)));
		506	break;
		507
		508	case EIO_STATVFS:
		509	case EIO_FSTATVFS:
		510	{
		511	SV *rv = &PL_sv_undef;
		512
		513	#ifndef _WIN32
		514	if (req->result >= 0)
		515	{
		516	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		517	HV *hv = newHV ();
		518	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		519	* chooses to make it a struct.
		520	*/
		521	unsigned long fsid = 0;
		522	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		523
		524	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		525
		526	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		527	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		528	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		529	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		530	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		531	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		532	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		533	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		534	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		535	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		536	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		537	}
		538	#endif
		539
		540	PUSHs (rv);
		541	}
		542
		543	break;
		544
		545	case EIO_GROUP:
		546	req->int1 = 2; /* mark group as finished */
		547
		548	if (req->sv1)
		549	{
		550	int i;
		551	AV av = (AV )req->sv1;
		552
		553	EXTEND (SP, AvFILL (av) + 1);
		554	for (i = 0; i <= AvFILL (av); ++i)
		555	PUSHs (*av_fetch (av, i, 0));
		556	}
		557	break;
		558
		559	case EIO_NOP:
		560	case EIO_BUSY:
		561	break;
		562
		563	case EIO_READLINK:
		564	case EIO_REALPATH:
		565	if (req->result > 0)
		566	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		567	break;
		568
		569	case EIO_STAT:
		570	case EIO_LSTAT:
		571	case EIO_FSTAT:
		572	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		573
		574	if (!(PL_laststatval = req->result))
		575	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		576	PL_statcache = (EIO_STRUCT_STAT )(req->ptr2);
		577
		578	PUSHs (sv_result);
		579	break;
		580
		581	case EIO_SEEK:
		582	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		583	break;
		584
		585	case EIO_READ:
		586	{
		587	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		588	*SvEND (req->sv2) = 0;
		589	SvPOK_only (req->sv2);
		590	SvSETMAGIC (req->sv2);
		591	PUSHs (sv_result);
		592	}
		593	break;
		594
270	case REQ_QUIT:	595	case EIO_CUSTOM:
271	write (respipe[1], (void *)&req, sizeof (req));	596	if (req->feed == fiemap)
272	return 0;	597	{
		598	#if HAVE_FIEMAP
		599	if (!req->result)
		600	{
		601	struct fiemap fiemap = (struct fiemap )req->ptr1;
		602
		603	if (fiemap->fm_extent_count)
		604	{
		605	AV *av = newAV ();
		606	int i;
		607
		608	while (fiemap->fm_mapped_extents)
		609	{
		610	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		611	AV *ext_av = newAV ();
		612
		613	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		614	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		615	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		616	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		617
		618	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		619	}
		620
		621	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		622	}
		623	else
		624	{
		625	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		626	PUSHs (sv_result);
		627	}
		628	}
		629	#endif
		630	}
		631	else
		632	PUSHs (sv_result);
		633	break;
		634
		635	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		636	if (req->result > 0)
		637	SvIV_set (sv_result, 0);
		638	/* FALLTHROUGH */
273		639
274	default:	640	default:
275	req->result = ENOSYS;	641	PUSHs (sv_result);
276	break;	642	break;
277	}	643	}
278		644
279	req->errorno = errno;	645	errno = req->errorno;
280	write (respipe[1], (void *)&req, sizeof (req));	646
		647	PUTBACK;
		648	call_sv (req->callback, G_VOID \| G_EVAL \| G_DISCARD);
		649	SPAGAIN;
		650
		651	if (expect_false (SvREFCNT (sv_result) != 1 \|\| sv_result_cache))
		652	SvREFCNT_dec (sv_result);
		653	else
		654	sv_result_cache = sv_result;
		655
		656	FREETMPS;
		657	LEAVE;
		658
		659	PUTBACK;
281	}	660	}
282		661
		662	return !!SvTRUE (ERRSV);
		663	}
		664
		665	static void
		666	req_destroy (aio_req req)
		667	{
		668	if (req->self)
		669	{
		670	sv_unmagic (req->self, PERL_MAGIC_ext);
		671	SvREFCNT_dec (req->self);
		672	}
		673
		674	SvREFCNT_dec (req->sv1);
		675	SvREFCNT_dec (req->sv2);
		676	SvREFCNT_dec (req->sv3);
		677	SvREFCNT_dec (req->sv4);
		678	SvREFCNT_dec (req->callback);
		679
		680	free (req);
		681	}
		682
		683	static void
		684	req_cancel_subs (aio_req grp)
		685	{
		686	if (grp->type != EIO_GROUP)
		687	return;
		688
		689	SvREFCNT_dec (grp->sv2);
		690	grp->sv2 = 0;
		691
		692	eio_grp_cancel (grp);
		693	}
		694
		695	static void ecb_cold
		696	create_respipe (void)
		697	{
		698	if (s_epipe_renew (&respipe))
		699	croak ("IO::AIO: unable to initialize result pipe");
		700	}
		701
		702	static void
		703	poll_wait (void)
		704	{
		705	while (eio_nreqs ())
		706	{
		707	int size;
		708
		709	X_LOCK (EIO_POOL->reslock);
		710	size = EIO_POOL->res_queue.size;
		711	X_UNLOCK (EIO_POOL->reslock);
		712
		713	if (size)
		714	return;
		715
		716	etp_maybe_start_thread (EIO_POOL);
		717
		718	s_epipe_wait (&respipe);
		719	}
		720	}
		721
		722	static int
		723	poll_cb (void)
		724	{
		725	for (;;)
		726	{
		727	int res = eio_poll ();
		728
		729	if (res > 0)
		730	croak (0);
		731
		732	if (!max_outstanding \|\| max_outstanding > eio_nreqs ())
		733	return res;
		734
		735	poll_wait ();
		736	}
		737	}
		738
		739	static void ecb_cold
		740	reinit (void)
		741	{
		742	create_respipe ();
		743
		744	if (eio_init (want_poll, done_poll) < 0)
		745	croak ("IO::AIO: unable to initialise eio library");
		746	}
		747
		748	/*****************************************************************************/
		749
		750	#if !_POSIX_MAPPED_FILES
		751	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		752	# define munmap(addr,length) EIO_ENOSYS ()
		753	#endif
		754
		755	#if !_POSIX_MEMORY_PROTECTION
		756	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		757	#endif
		758
		759	#define MMAP_MAGIC PERL_MAGIC_ext
		760
		761	static int ecb_cold
		762	mmap_free (pTHX_ SV sv, MAGIC mg)
		763	{
		764	int old_errno = errno;
		765	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		766	errno = old_errno;
		767
		768	mg->mg_obj = 0; /* just in case */
		769
		770	SvREADONLY_off (sv);
		771
		772	if (SvPVX (sv) != mg->mg_ptr)
		773	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		774
		775	SvCUR_set (sv, 0);
		776	SvPVX (sv) = 0;
		777	SvOK_off (sv);
		778
283	return 0;	779	return 0;
284	}	780	}
285		781
		782	static MGVTBL mmap_vtbl = {
		783	0, 0, 0, 0, mmap_free
		784	};
		785
		786	/*****************************************************************************/
		787
		788	static SV *
		789	get_cb (SV *cb_sv)
		790	{
		791	SvGETMAGIC (cb_sv);
		792	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		793	}
		794
		795	static aio_req ecb_noinline
		796	dreq (SV *callback)
		797	{
		798	SV *cb_cv;
		799	aio_req req;
		800	int req_pri = next_pri;
		801	next_pri = EIO_PRI_DEFAULT;
		802
		803	cb_cv = get_cb (callback);
		804
		805	req = calloc (sizeof (*req), 1);
		806	if (!req)
		807	croak ("out of memory during eio_req allocation");
		808
		809	req->callback = SvREFCNT_inc (cb_cv);
		810	req->pri = req_pri;
		811
		812	return req;
		813	}
		814
		815	#define dREQ \
		816	aio_req req = dreq (callback); \
		817
		818	#define REQ_SEND \
		819	PUTBACK; \
		820	req_submit (req); \
		821	SPAGAIN; \
		822	\
		823	if (GIMME_V != G_VOID) \
		824	XPUSHs (req_sv (req, aio_req_stash));
		825
		826	ecb_inline void
		827	req_set_path (aio_req req, SV path, SV wdsv, SV pathsv, eio_wd wd, void **ptr)
		828	{
		829	if (expect_false (SvROK (path)))
		830	{
		831	SV *rv = SvRV (path);
		832	SV *wdob;
		833
		834	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		835	{
		836	path = AvARRAY (rv)[1];
		837	wdob = AvARRAY (rv)[0];
		838
		839	if (SvOK (wdob))
		840	{
		841	*wd = SvAIO_WD (wdob);
		842	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		843	}
		844	else
		845	*wd = EIO_INVALID_WD;
		846	}
		847	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		848	{
		849	*wd = (aio_wd)(long)SvIVX (rv);
		850	*wdsv = SvREFCNT_inc_NN (rv);
		851	*ptr = ".";
		852	return; /* path set to "." */
		853	}
		854	else
		855	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		856	}
		857
		858	*pathsv = newSVsv (path);
		859	ptr = SvPVbyte_nolen (pathsv);
		860	}
		861
		862	static void ecb_noinline
		863	req_set_path1 (aio_req req, SV *path)
		864	{
		865	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		866	}
		867
		868	static void ecb_noinline
		869	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		870	{
		871	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		872
		873	switch (SvTYPE (rv))
		874	{
		875	case SVt_PVIO:
		876	case SVt_PVLV:
		877	case SVt_PVGV:
		878	req->type = type_fh;
		879	req->sv1 = newSVsv (fh_or_path);
		880	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		881	break;
		882
		883	default:
		884	req->type = type_path;
		885	req_set_path1 (req, fh_or_path);
		886	break;
		887	}
		888	}
		889
		890	XS(boot_IO__AIO) ecb_cold;
		891
286	MODULE = IO::AIO PACKAGE = IO::AIO	892	MODULE = IO::AIO PACKAGE = IO::AIO
287		893
		894	PROTOTYPES: ENABLE
		895
288	BOOT:	896	BOOT:
289	{	897	{
290	if (pipe (reqpipe) \|\| pipe (respipe))	898	static const struct {
291	croak ("unable to initialize request or result pipe");	899	const char *name;
		900	IV iv;
		901	} *civ, const_iv[] = {
		902	# define const_niv(name, value) { # name, (IV) value },
		903	# define const_iv(name) { # name, (IV) name },
		904	# define const_eio(name) { # name, (IV) EIO_ ## name },
292		905
293	if (fcntl (reqpipe[1], F_SETFL, O_NONBLOCK))	906	/* you have to re-run ./gendef0 after adding/removing any constants here */
294	croak ("cannot set result pipe to nonblocking mode");	907	/* the first block can be undef if missing */
		908	const_iv (ENOSYS)
		909	const_iv (EXDEV)
		910	const_iv (EBADR)
295		911
296	if (fcntl (respipe[0], F_SETFL, O_NONBLOCK))	912	/* for lseek */
297	croak ("cannot set result pipe to nonblocking mode");	913	const_iv (SEEK_DATA)
298	}	914	const_iv (SEEK_HOLE)
299		915
		916	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		917	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		918	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		919	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		920	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		921	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		922
		923	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		924	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		925	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		926	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		927	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		928	const_niv (MADV_FREE , POSIX_MADV_FREE)
		929
		930	/* the second block will be 0 when missing */
		931	const_iv (O_RDONLY)
		932	const_iv (O_WRONLY)
		933	const_iv (O_RDWR)
		934	const_iv (O_CREAT)
		935	const_iv (O_TRUNC)
		936	const_iv (O_EXCL)
		937	const_iv (O_APPEND)
		938
		939	const_iv (O_ASYNC)
		940	const_iv (O_DIRECT)
		941	const_iv (O_NOATIME)
		942
		943	const_iv (O_CLOEXEC)
		944	const_iv (O_NOCTTY)
		945	const_iv (O_NOFOLLOW)
		946	const_iv (O_NONBLOCK)
		947	const_iv (O_EXEC)
		948	const_iv (O_SEARCH)
		949	const_iv (O_DIRECTORY)
		950	const_iv (O_DSYNC)
		951	const_iv (O_RSYNC)
		952	const_iv (O_SYNC)
		953	const_iv (O_PATH)
		954	const_iv (O_TMPFILE)
		955	const_iv (O_TTY_INIT)
		956
		957	const_iv (S_IFIFO)
		958	const_iv (S_IFCHR)
		959	const_iv (S_IFBLK)
		960	const_iv (S_IFLNK)
		961	const_iv (S_IFREG)
		962	const_iv (S_IFDIR)
		963	const_iv (S_IFWHT)
		964	const_iv (S_IFSOCK)
		965	const_iv (S_IFMT)
		966
		967	const_iv (ST_RDONLY)
		968	const_iv (ST_NOSUID)
		969	const_iv (ST_NODEV)
		970	const_iv (ST_NOEXEC)
		971	const_iv (ST_SYNCHRONOUS)
		972	const_iv (ST_MANDLOCK)
		973	const_iv (ST_WRITE)
		974	const_iv (ST_APPEND)
		975	const_iv (ST_IMMUTABLE)
		976	const_iv (ST_NOATIME)
		977	const_iv (ST_NODIRATIME)
		978	const_iv (ST_RELATIME)
		979
		980	const_iv (PROT_NONE)
		981	const_iv (PROT_EXEC)
		982	const_iv (PROT_READ)
		983	const_iv (PROT_WRITE)
		984
		985	const_iv (MAP_PRIVATE)
		986	const_iv (MAP_SHARED)
		987	const_iv (MAP_FIXED)
		988	const_iv (MAP_ANONYMOUS)
		989
		990	/* linuxish */
		991	const_iv (MAP_LOCKED)
		992	const_iv (MAP_NORESERVE)
		993	const_iv (MAP_POPULATE)
		994	const_iv (MAP_NONBLOCK)
		995	const_iv (MAP_GROWSDOWN)
		996	const_iv (MAP_32BIT)
		997	const_iv (MAP_HUGETLB)
		998	const_iv (MAP_STACK)
		999
		1000	const_iv (FIEMAP_FLAG_SYNC)
		1001	const_iv (FIEMAP_FLAG_XATTR)
		1002	const_iv (FIEMAP_FLAGS_COMPAT)
		1003	const_iv (FIEMAP_EXTENT_LAST)
		1004	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1005	const_iv (FIEMAP_EXTENT_DELALLOC)
		1006	const_iv (FIEMAP_EXTENT_ENCODED)
		1007	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1008	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1009	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1010	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1011	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1012	const_iv (FIEMAP_EXTENT_MERGED)
		1013	const_iv (FIEMAP_EXTENT_SHARED)
		1014
		1015	const_iv (SPLICE_F_MOVE)
		1016	const_iv (SPLICE_F_NONBLOCK)
		1017	const_iv (SPLICE_F_MORE)
		1018	const_iv (SPLICE_F_GIFT)
		1019
		1020	/* these are libeio constants, and are independent of gendef0 */
		1021	const_eio (SEEK_SET)
		1022	const_eio (SEEK_CUR)
		1023	const_eio (SEEK_END)
		1024
		1025	const_eio (MCL_FUTURE)
		1026	const_eio (MCL_CURRENT)
		1027
		1028	const_eio (MS_ASYNC)
		1029	const_eio (MS_INVALIDATE)
		1030	const_eio (MS_SYNC)
		1031
		1032	const_eio (MT_MODIFY)
		1033
		1034	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1035	const_eio (SYNC_FILE_RANGE_WRITE)
		1036	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1037
		1038	const_eio (FALLOC_FL_KEEP_SIZE)
		1039	const_eio (FALLOC_FL_PUNCH_HOLE)
		1040	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1041	const_eio (FALLOC_FL_ZERO_RANGE)
		1042
		1043	const_eio (READDIR_DENTS)
		1044	const_eio (READDIR_DIRS_FIRST)
		1045	const_eio (READDIR_STAT_ORDER)
		1046	const_eio (READDIR_FOUND_UNKNOWN)
		1047
		1048	const_eio (DT_UNKNOWN)
		1049	const_eio (DT_FIFO)
		1050	const_eio (DT_CHR)
		1051	const_eio (DT_DIR)
		1052	const_eio (DT_BLK)
		1053	const_eio (DT_REG)
		1054	const_eio (DT_LNK)
		1055	const_eio (DT_SOCK)
		1056	const_eio (DT_WHT)
		1057	};
		1058
		1059	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1060	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1061	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1062	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		1063
		1064	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
		1065	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
		1066
		1067	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1068
		1069	reinit ();
		1070	}
		1071
300	void	1072	void
301	min_parallel(nthreads)	1073	reinit ()
302	int nthreads	1074	PROTOTYPE:
		1075
		1076	void
		1077	max_poll_reqs (unsigned int nreqs)
303	PROTOTYPE: $	1078	PROTOTYPE: $
304	CODE:	1079	CODE:
305	while (nthreads > started)	1080	eio_set_max_poll_reqs (nreqs);
306	start_thread ();
307		1081
308	void	1082	void
309	max_parallel(nthreads)	1083	max_poll_time (double nseconds)
310	int nthreads
311	PROTOTYPE: $	1084	PROTOTYPE: $
312	CODE:	1085	CODE:
		1086	eio_set_max_poll_time (nseconds);
		1087
		1088	void
		1089	min_parallel (unsigned int nthreads)
		1090	PROTOTYPE: $
		1091	CODE:
		1092	eio_set_min_parallel (nthreads);
		1093
		1094	void
		1095	max_parallel (unsigned int nthreads)
		1096	PROTOTYPE: $
		1097	CODE:
		1098	eio_set_max_parallel (nthreads);
		1099
		1100	void
		1101	max_idle (unsigned int nthreads)
		1102	PROTOTYPE: $
		1103	CODE:
		1104	eio_set_max_idle (nthreads);
		1105
		1106	void
		1107	idle_timeout (unsigned int seconds)
		1108	PROTOTYPE: $
		1109	CODE:
		1110	eio_set_idle_timeout (seconds);
		1111
		1112	void
		1113	max_outstanding (unsigned int maxreqs)
		1114	PROTOTYPE: $
		1115	CODE:
		1116	max_outstanding = maxreqs;
		1117
		1118	void
		1119	aio_wd (SV8 pathname, SV callback = &PL_sv_undef)
		1120	PPCODE:
313	{	1121	{
314	int cur = started;	1122	dREQ;
315	while (cur > nthreads)	1123
316	{	1124	req->type = EIO_WD_OPEN;
317	end_thread ();	1125	req_set_path1 (req, pathname);
		1126
		1127	REQ_SEND;
		1128	}
		1129
		1130	void
		1131	aio_open (SV8 pathname, int flags, int mode, SV callback = &PL_sv_undef)
		1132	PPCODE:
		1133	{
		1134	dREQ;
		1135
		1136	req->type = EIO_OPEN;
		1137	req_set_path1 (req, pathname);
		1138	req->int1 = flags;
		1139	req->int2 = mode;
		1140
		1141	REQ_SEND;
		1142	}
		1143
		1144	void
		1145	aio_fsync (SV fh, SV callback = &PL_sv_undef)
		1146	ALIAS:
		1147	aio_fsync = EIO_FSYNC
		1148	aio_fdatasync = EIO_FDATASYNC
		1149	aio_syncfs = EIO_SYNCFS
		1150	PPCODE:
		1151	{
		1152	int fd = s_fileno_croak (fh, 0);
		1153	dREQ;
		1154
		1155	req->type = ix;
		1156	req->sv1 = newSVsv (fh);
		1157	req->int1 = fd;
		1158
		1159	REQ_SEND;
		1160	}
		1161
		1162	void
		1163	aio_sync_file_range (SV fh, off_t offset, size_t nbytes, UV flags, SV callback = &PL_sv_undef)
		1164	PPCODE:
		1165	{
		1166	int fd = s_fileno_croak (fh, 0);
		1167	dREQ;
		1168
		1169	req->type = EIO_SYNC_FILE_RANGE;
		1170	req->sv1 = newSVsv (fh);
		1171	req->int1 = fd;
		1172	req->offs = offset;
		1173	req->size = nbytes;
		1174	req->int2 = flags;
		1175
		1176	REQ_SEND;
		1177	}
		1178
		1179	void
		1180	aio_allocate (SV fh, int mode, off_t offset, size_t len, SV callback = &PL_sv_undef)
		1181	PPCODE:
		1182	{
		1183	int fd = s_fileno_croak (fh, 0);
		1184	dREQ;
		1185
		1186	req->type = EIO_FALLOCATE;
		1187	req->sv1 = newSVsv (fh);
		1188	req->int1 = fd;
		1189	req->int2 = mode;
		1190	req->offs = offset;
		1191	req->size = len;
		1192
		1193	REQ_SEND;
		1194	}
		1195
		1196	void
		1197	aio_close (SV fh, SV callback = &PL_sv_undef)
		1198	PPCODE:
		1199	{
		1200	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1201	int fd = s_fileno_croak (fh, 0);
		1202	dREQ;
		1203
		1204	if (expect_false (close_fd < 0))
		1205	{
		1206	int pipefd [2];
		1207
		1208	if (
		1209	#ifdef _WIN32
		1210	_pipe (pipefd, 1, _O_BINARY) < 0
		1211	#else
		1212	pipe (pipefd) < 0
		1213	\|\| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1214	#endif
		1215	\|\| close (pipefd [1]) < 0
318	cur--;	1216	)
		1217	abort (); /D/
		1218
		1219	close_fd = pipefd [0];
319	}	1220	}
320		1221
321	while (started > nthreads)	1222	req->type = EIO_DUP2;
		1223	req->int1 = close_fd;
		1224	req->sv2 = newSVsv (fh);
		1225	req->int2 = fd;
		1226
		1227	REQ_SEND;
		1228	}
		1229
		1230	void
		1231	aio_seek (SV fh, SV offset, int whence, SV *callback = &PL_sv_undef)
		1232	PPCODE:
		1233	{
		1234	int fd = s_fileno_croak (fh, 0);
		1235	dREQ;
		1236
		1237	req->type = EIO_SEEK;
		1238	req->sv1 = newSVsv (fh);
		1239	req->int1 = fd;
		1240	req->offs = SvVAL64 (offset);
		1241	req->int2 = whence;
		1242
		1243	REQ_SEND;
		1244	}
		1245
		1246	void
		1247	aio_read (SV fh, SV offset, SV length, SV8 data, IV dataoffset, SV *callback = &PL_sv_undef)
		1248	ALIAS:
		1249	aio_read = EIO_READ
		1250	aio_write = EIO_WRITE
		1251	PPCODE:
		1252	{
		1253	STRLEN svlen;
		1254	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
		1255	char *svptr = SvPVbyte (data, svlen);
		1256	UV len = SvUV (length);
		1257
		1258	if (dataoffset < 0)
		1259	dataoffset += svlen;
		1260
		1261	if (dataoffset < 0 \|\| dataoffset > svlen)
		1262	croak ("dataoffset outside of data scalar");
		1263
		1264	if (ix == EIO_WRITE)
322	{	1265	{
323	poll_wait ();	1266	/* write: check length and adjust. */
324	poll_cb (aTHX);	1267	if (!SvOK (length) \|\| len + dataoffset > svlen)
325	}	1268	len = svlen - dataoffset;
326	}
327
328	void
329	aio_open(pathname,flags,mode,callback)
330	SV * pathname
331	int flags
332	int mode
333	SV * callback
334	PROTOTYPE: $$$$
335	CODE:
336	{
337	aio_req req;
338
339	Newz (0, req, 1, aio_cb);
340
341	if (!req)
342	croak ("out of memory during aio_req allocation");
343
344	req->type = REQ_OPEN;
345	req->data = newSVsv (pathname);
346	req->dataptr = SvPV_nolen (req->data);
347	req->fd = flags;
348	req->mode = mode;
349	req->callback = SvREFCNT_inc (callback);
350
351	send_req (req);
352	}
353
354	void
355	aio_close(fh,callback)
356	InputStream fh
357	SV * callback
358	PROTOTYPE: $$
359	ALIAS:
360	aio_close = REQ_CLOSE
361	aio_fsync = REQ_FSYNC
362	aio_fdatasync = REQ_FDATASYNC
363	CODE:
364	{
365	aio_req req;
366
367	Newz (0, req, 1, aio_cb);
368
369	if (!req)
370	croak ("out of memory during aio_req allocation");
371
372	req->type = ix;
373	req->fd = PerlIO_fileno (fh);
374	req->callback = SvREFCNT_inc (callback);
375
376	send_req (req);
377	}
378
379	void
380	aio_read(fh,offset,length,data,dataoffset,callback)
381	InputStream fh
382	UV offset
383	IV length
384	SV * data
385	IV dataoffset
386	SV * callback
387	PROTOTYPE: $$$$$$
388	CODE:
389	read_write (aTHX_ 0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
390
391	void
392	aio_write(fh,offset,length,data,dataoffset,callback)
393	OutputStream fh
394	UV offset
395	IV length
396	SV * data
397	IV dataoffset
398	SV * callback
399	PROTOTYPE: $$$$$$
400	CODE:
401	read_write (aTHX_ 1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
402
403	void
404	aio_readahead(fh,offset,length,callback)
405	InputStream fh
406	UV offset
407	IV length
408	SV * callback
409	PROTOTYPE: $$$$
410	CODE:
411	{
412	aio_req req;
413
414	if (length < 0)
415	croak ("length must not be negative");
416
417	Newz (0, req, 1, aio_cb);
418
419	if (!req)
420	croak ("out of memory during aio_req allocation");
421
422	req->type = REQ_READAHEAD;
423	req->fd = PerlIO_fileno (fh);
424	req->offset = offset;
425	req->length = length;
426	req->callback = SvREFCNT_inc (callback);
427
428	send_req (req);
429	}
430
431	void
432	aio_stat(fh_or_path,callback)
433	SV * fh_or_path
434	SV * callback
435	PROTOTYPE: $$
436	ALIAS:
437	aio_lstat = 1
438	CODE:
439	{
440	aio_req req;
441
442	Newz (0, req, 1, aio_cb);
443
444	if (!req)
445	croak ("out of memory during aio_req allocation");
446
447	New (0, req->statdata, 1, Stat_t);
448
449	if (!req->statdata)
450	croak ("out of memory during aio_req->statdata allocation");
451
452	if (SvPOK (fh_or_path))
453	{
454	req->type = ix ? REQ_LSTAT : REQ_STAT;
455	req->data = newSVsv (fh_or_path);
456	req->dataptr = SvPV_nolen (req->data);
457	}	1269	}
458	else	1270	else
459	{	1271	{
460	req->type = REQ_FSTAT;	1272	/* read: check type and grow scalar as necessary */
461	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1273	if (!SvPOK (data) \|\| SvLEN (data) >= SvCUR (data))
		1274	svptr = sv_grow (data, len + dataoffset + 1);
		1275	else if (SvCUR (data) < len + dataoffset)
		1276	croak ("length + dataoffset outside of scalar, and cannot grow");
462	}	1277	}
463		1278
		1279	{
		1280	dREQ;
		1281
		1282	req->type = ix;
		1283	req->sv1 = newSVsv (fh);
		1284	req->int1 = fd;
		1285	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1286	req->size = len;
464	req->callback = SvREFCNT_inc (callback);	1287	req->sv2 = SvREFCNT_inc (data);
		1288	req->ptr2 = (char *)svptr + dataoffset;
		1289	req->stroffset = dataoffset;
465		1290
466	send_req (req);	1291	if (!SvREADONLY (data))
467	}	1292	{
		1293	SvREADONLY_on (data);
		1294	req->flags \|= FLAG_SV2_RO_OFF;
		1295	}
468		1296
		1297	REQ_SEND;
		1298	}
		1299	}
		1300
469	void	1301	void
470	aio_unlink(pathname,callback)	1302	aio_ioctl (SV fh, unsigned long request, SV8 arg, SV *callback = &PL_sv_undef)
471	SV * pathname	1303	ALIAS:
472	SV * callback	1304	aio_ioctl = EIO_IOCTL
473	PROTOTYPE: $$	1305	aio_fcntl = EIO_FCNTL
		1306	PPCODE:
		1307	{
		1308	int fd = s_fileno_croak (fh, 0);
		1309	char *svptr;
		1310
		1311	if (SvPOK (arg) \|\| !SvNIOK (arg))
		1312	{
		1313	STRLEN svlen;
		1314	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1315	#ifdef IOCPARM_LEN
		1316	STRLEN need = IOCPARM_LEN (request);
		1317	#else
		1318	STRLEN need = 256;
		1319	#endif
		1320
		1321	if (svlen < need)
		1322	svptr = SvGROW (arg, need);
		1323	}
		1324	else
		1325	svptr = (char *)SvIV (arg);
		1326
		1327	{
		1328	dREQ;
		1329
		1330	req->type = ix;
		1331	req->sv1 = newSVsv (fh);
		1332	req->int1 = fd;
		1333	req->int2 = (long)request;
		1334	req->sv2 = SvREFCNT_inc (arg);
		1335	req->ptr2 = svptr;
		1336
		1337	REQ_SEND;
		1338	}
		1339	}
		1340
		1341	void
		1342	aio_readlink (SV8 pathname, SV callback = &PL_sv_undef)
		1343	ALIAS:
		1344	aio_readlink = EIO_READLINK
		1345	aio_realpath = EIO_REALPATH
		1346	PPCODE:
		1347	{
		1348	dREQ;
		1349
		1350	req->type = ix;
		1351	req_set_path1 (req, pathname);
		1352
		1353	REQ_SEND;
		1354	}
		1355
		1356	void
		1357	aio_sendfile (SV out_fh, SV in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1358	PPCODE:
		1359	{
		1360	int ifd = s_fileno_croak (in_fh , 0);
		1361	int ofd = s_fileno_croak (out_fh, 1);
		1362	dREQ;
		1363
		1364	req->type = EIO_SENDFILE;
		1365	req->sv1 = newSVsv (out_fh);
		1366	req->int1 = ofd;
		1367	req->sv2 = newSVsv (in_fh);
		1368	req->int2 = ifd;
		1369	req->offs = in_offset;
		1370	req->size = length;
		1371
		1372	REQ_SEND;
		1373	}
		1374
		1375	void
		1376	aio_readahead (SV fh, off_t offset, size_t length, SV callback = &PL_sv_undef)
		1377	PPCODE:
		1378	{
		1379	int fd = s_fileno_croak (fh, 0);
		1380	dREQ;
		1381
		1382	req->type = EIO_READAHEAD;
		1383	req->sv1 = newSVsv (fh);
		1384	req->int1 = fd;
		1385	req->offs = offset;
		1386	req->size = length;
		1387
		1388	REQ_SEND;
		1389	}
		1390
		1391	void
		1392	aio_stat (SV8 fh_or_path, SV callback = &PL_sv_undef)
		1393	ALIAS:
		1394	aio_stat = EIO_STAT
		1395	aio_lstat = EIO_LSTAT
		1396	aio_statvfs = EIO_STATVFS
		1397	PPCODE:
		1398	{
		1399	dREQ;
		1400
		1401	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1402
		1403	REQ_SEND;
		1404	}
		1405
		1406	UV
		1407	major (UV dev)
		1408	ALIAS:
		1409	minor = 1
474	CODE:	1410	CODE:
		1411	RETVAL = ix ? minor (dev) : major (dev);
		1412	OUTPUT:
		1413	RETVAL
		1414
		1415	UV
		1416	makedev (UV maj, UV min)
		1417	CODE:
		1418	RETVAL = makedev (maj, min);
		1419	OUTPUT:
		1420	RETVAL
		1421
		1422	void
		1423	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback = &PL_sv_undef)
		1424	PPCODE:
475	{	1425	{
476	aio_req req;	1426	dREQ;
		1427
		1428	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1429	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1430	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1431
		1432	REQ_SEND;
		1433	}
		1434
		1435	void
		1436	aio_truncate (SV8 fh_or_path, SV offset, SV *callback = &PL_sv_undef)
		1437	PPCODE:
		1438	{
		1439	dREQ;
		1440
		1441	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1442	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1443
		1444	REQ_SEND;
		1445	}
		1446
		1447	void
		1448	aio_chmod (SV8 fh_or_path, int mode, SV callback = &PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
		1453	req->int2 = mode;
		1454	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1455
		1456	REQ_SEND;
		1457	}
		1458
		1459	void
		1460	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback = &PL_sv_undef)
		1461	PPCODE:
		1462	{
		1463	dREQ;
		1464
		1465	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1466	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1467	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1468
		1469	REQ_SEND;
		1470	}
		1471
		1472	void
		1473	aio_readdirx (SV8 pathname, IV flags, SV callback = &PL_sv_undef)
		1474	PPCODE:
		1475	{
		1476	dREQ;
477		1477
478	Newz (0, req, 1, aio_cb);	1478	req->type = EIO_READDIR;
		1479	req->int1 = flags \| EIO_READDIR_DENTS \| EIO_READDIR_CUSTOM1;
		1480
		1481	if (flags & EIO_READDIR_DENTS)
		1482	req->int1 \|= EIO_READDIR_CUSTOM2;
		1483
		1484	req_set_path1 (req, pathname);
		1485
		1486	REQ_SEND;
		1487	}
		1488
		1489	void
		1490	aio_mkdir (SV8 pathname, int mode, SV callback = &PL_sv_undef)
		1491	PPCODE:
		1492	{
		1493	dREQ;
		1494
		1495	req->type = EIO_MKDIR;
		1496	req->int2 = mode;
		1497	req_set_path1 (req, pathname);
		1498
		1499	REQ_SEND;
		1500	}
		1501
		1502	void
		1503	aio_unlink (SV8 pathname, SV callback = &PL_sv_undef)
		1504	ALIAS:
		1505	aio_unlink = EIO_UNLINK
		1506	aio_rmdir = EIO_RMDIR
		1507	aio_readdir = EIO_READDIR
		1508	PPCODE:
		1509	{
		1510	dREQ;
479		1511
480	if (!req)	1512	req->type = ix;
481	croak ("out of memory during aio_req allocation");	1513	req_set_path1 (req, pathname);
		1514
		1515	REQ_SEND;
		1516	}
		1517
		1518	void
		1519	aio_link (SV8 oldpath, SV8 newpath, SV *callback = &PL_sv_undef)
		1520	ALIAS:
		1521	aio_link = EIO_LINK
		1522	aio_symlink = EIO_SYMLINK
		1523	aio_rename = EIO_RENAME
		1524	PPCODE:
		1525	{
		1526	eio_wd wd2 = 0;
		1527	dREQ;
482		1528
483	req->type = REQ_UNLINK;	1529	req->type = ix;
484	req->data = newSVsv (pathname);	1530	req_set_path1 (req, oldpath);
485	req->dataptr = SvPV_nolen (req->data);	1531	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
486	req->callback = SvREFCNT_inc (callback);	1532	req->int3 = (long)wd2;
487		1533
488	send_req (req);	1534	REQ_SEND;
		1535	}
		1536
		1537	void
		1538	aio_mknod (SV8 pathname, int mode, UV dev, SV callback = &PL_sv_undef)
		1539	PPCODE:
		1540	{
		1541	dREQ;
		1542
		1543	req->type = EIO_MKNOD;
		1544	req->int2 = (mode_t)mode;
		1545	req->offs = dev;
		1546	req_set_path1 (req, pathname);
		1547
		1548	REQ_SEND;
		1549	}
		1550
		1551	void
		1552	aio_mtouch (SV8 data, IV offset = 0, SV length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
		1553	ALIAS:
		1554	aio_mtouch = EIO_MTOUCH
		1555	aio_msync = EIO_MSYNC
		1556	PPCODE:
		1557	{
		1558	STRLEN svlen;
		1559	char *svptr = SvPVbyte (data, svlen);
		1560	UV len = SvUV (length);
		1561
		1562	if (offset < 0)
		1563	offset += svlen;
		1564
		1565	if (offset < 0 \|\| offset > svlen)
		1566	croak ("offset outside of scalar");
		1567
		1568	if (!SvOK (length) \|\| len + offset > svlen)
		1569	len = svlen - offset;
		1570
		1571	{
		1572	dREQ;
		1573
		1574	req->type = ix;
		1575	req->sv2 = SvREFCNT_inc (data);
		1576	req->ptr2 = (char *)svptr + offset;
		1577	req->size = len;
		1578	req->int1 = flags;
		1579
		1580	REQ_SEND;
		1581	}
		1582	}
		1583
		1584	void
		1585	aio_mlock (SV8 data, IV offset = 0, SV length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1586	PPCODE:
		1587	{
		1588	STRLEN svlen;
		1589	char *svptr = SvPVbyte (data, svlen);
		1590	UV len = SvUV (length);
		1591
		1592	if (offset < 0)
		1593	offset += svlen;
		1594
		1595	if (offset < 0 \|\| offset > svlen)
		1596	croak ("offset outside of scalar");
		1597
		1598	if (!SvOK (length) \|\| len + offset > svlen)
		1599	len = svlen - offset;
		1600
		1601	{
		1602	dREQ;
		1603
		1604	req->type = EIO_MLOCK;
		1605	req->sv2 = SvREFCNT_inc (data);
		1606	req->ptr2 = (char *)svptr + offset;
		1607	req->size = len;
		1608
		1609	REQ_SEND;
		1610	}
		1611	}
		1612
		1613	void
		1614	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1615	PPCODE:
		1616	{
		1617	dREQ;
		1618
		1619	req->type = EIO_MLOCKALL;
		1620	req->int1 = flags;
		1621
		1622	REQ_SEND;
		1623	}
		1624
		1625	void
		1626	aio_fiemap (SV fh, off_t start, SV length, U32 flags, SV count, SV callback = &PL_sv_undef)
		1627	PPCODE:
		1628	{
		1629	int fd = s_fileno_croak (fh, 0);
		1630	dREQ;
		1631
		1632	req->type = EIO_CUSTOM;
		1633	req->sv1 = newSVsv (fh);
		1634	req->int1 = fd;
		1635
		1636	req->feed = fiemap;
		1637	#if HAVE_FIEMAP
		1638	/* keep our fingers crossed that the next two types are 64 bit */
		1639	req->offs = start;
		1640	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1641	req->int2 = flags;
		1642	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1643	#endif
		1644
		1645	REQ_SEND;
		1646	}
		1647
		1648	void
		1649	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1650	PPCODE:
		1651	{
		1652	dREQ;
		1653
		1654	req->type = EIO_BUSY;
		1655	req->nv1 = delay < 0. ? 0. : delay;
		1656
		1657	REQ_SEND;
		1658	}
		1659
		1660	void
		1661	aio_group (SV *callback = &PL_sv_undef)
		1662	PPCODE:
		1663	{
		1664	dREQ;
		1665
		1666	req->type = EIO_GROUP;
		1667
		1668	PUTBACK;
		1669	req_submit (req);
		1670	SPAGAIN;
		1671
		1672	XPUSHs (req_sv (req, aio_grp_stash));
		1673	}
		1674
		1675	void
		1676	aio_nop (SV *callback = &PL_sv_undef)
		1677	ALIAS:
		1678	aio_nop = EIO_NOP
		1679	aio_sync = EIO_SYNC
		1680	PPCODE:
		1681	{
		1682	dREQ;
		1683
		1684	req->type = ix;
		1685
		1686	REQ_SEND;
489	}	1687	}
490		1688
491	int	1689	int
		1690	aioreq_pri (int pri = NO_INIT)
		1691	CODE:
		1692	RETVAL = next_pri;
		1693	if (items > 0)
		1694	{
		1695	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1696	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1697	next_pri = pri;
		1698	}
		1699	OUTPUT:
		1700	RETVAL
		1701
		1702	void
		1703	aioreq_nice (int nice = 0)
		1704	CODE:
		1705	nice = next_pri - nice;
		1706	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1707	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1708	next_pri = nice;
		1709
		1710	void
		1711	flush ()
		1712	CODE:
		1713	while (eio_nreqs ())
		1714	{
		1715	poll_wait ();
		1716	poll_cb ();
		1717	}
		1718
		1719	int
		1720	poll ()
		1721	CODE:
		1722	poll_wait ();
		1723	RETVAL = poll_cb ();
		1724	OUTPUT:
		1725	RETVAL
		1726
		1727	int
492	poll_fileno()	1728	poll_fileno ()
		1729	CODE:
		1730	RETVAL = s_epipe_fd (&respipe);
		1731	OUTPUT:
		1732	RETVAL
		1733
		1734	int
		1735	poll_cb (...)
493	PROTOTYPE:	1736	PROTOTYPE:
494	CODE:	1737	CODE:
495	RETVAL = respipe[0];	1738	RETVAL = poll_cb ();
496	OUTPUT:	1739	OUTPUT:
497	RETVAL	1740	RETVAL
498		1741
		1742	void
		1743	poll_wait ()
		1744	CODE:
		1745	poll_wait ();
		1746
499	int	1747	int
500	poll_cb(...)	1748	nreqs ()
501	PROTOTYPE:
502	CODE:	1749	CODE:
503	RETVAL = poll_cb (aTHX);	1750	RETVAL = eio_nreqs ();
504	OUTPUT:	1751	OUTPUT:
505	RETVAL	1752	RETVAL
506		1753
507	void	1754	int
508	poll_wait()	1755	nready ()
509	PROTOTYPE:
510	CODE:	1756	CODE:
511	poll_wait ();
512
513	int
514	nreqs()
515	PROTOTYPE:
516	CODE:
517	RETVAL = nreqs;	1757	RETVAL = eio_nready ();
518	OUTPUT:	1758	OUTPUT:
519	RETVAL	1759	RETVAL
520		1760
		1761	int
		1762	npending ()
		1763	CODE:
		1764	RETVAL = eio_npending ();
		1765	OUTPUT:
		1766	RETVAL
		1767
		1768	int
		1769	nthreads ()
		1770	CODE:
		1771	RETVAL = eio_nthreads ();
		1772	OUTPUT:
		1773	RETVAL
		1774
		1775	int
		1776	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1777	CODE:
		1778	RETVAL = posix_fadvise (fh, offset, length, advice);
		1779	OUTPUT:
		1780	RETVAL
		1781
		1782	IV
		1783	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1784	CODE:
		1785	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	void
		1790	mmap (SV scalar, STRLEN length, int prot, int flags, SV fh = &PL_sv_undef, off_t offset = 0)
		1791	PPCODE:
		1792	sv_unmagic (scalar, MMAP_MAGIC);
		1793	{
		1794	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1795	void addr = (void )mmap (0, length, prot, flags, fd, offset);
		1796	if (addr == (void *)-1)
		1797	XSRETURN_NO;
		1798
		1799	sv_force_normal (scalar);
		1800
		1801	/* we store the length in mg_obj, as namlen is I32 :/ */
		1802	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1803	->mg_obj = (SV *)length;
		1804
		1805	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1806
		1807	if (!(prot & PROT_WRITE))
		1808	SvREADONLY_on (scalar);
		1809
		1810	if (SvLEN (scalar))
		1811	Safefree (SvPVX (scalar));
		1812
		1813	SvPVX (scalar) = (char *)addr;
		1814	SvCUR_set (scalar, length);
		1815	SvLEN_set (scalar, 0);
		1816	SvPOK_only (scalar);
		1817
		1818	XSRETURN_YES;
		1819	}
		1820
		1821	void
		1822	munmap (SV *scalar)
		1823	CODE:
		1824	sv_unmagic (scalar, MMAP_MAGIC);
		1825
		1826	int
		1827	madvise (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef, IV advice_or_prot)
		1828	ALIAS:
		1829	mprotect = 1
		1830	CODE:
		1831	{
		1832	STRLEN svlen;
		1833	void *addr = SvPVbyte (scalar, svlen);
		1834	STRLEN len = SvUV (length);
		1835
		1836	if (offset < 0)
		1837	offset += svlen;
		1838
		1839	if (offset < 0 \|\| offset > svlen)
		1840	croak ("offset outside of scalar");
		1841
		1842	if (!SvOK (length) \|\| len + offset > svlen)
		1843	len = svlen - offset;
		1844
		1845	addr = (void *)(((intptr_t)addr) + offset);
		1846	eio_page_align (&addr, &len);
		1847
		1848	switch (ix)
		1849	{
		1850	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1851	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1852	}
		1853	}
		1854	OUTPUT:
		1855	RETVAL
		1856
		1857	int
		1858	munlock (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef)
		1859	CODE:
		1860	{
		1861	STRLEN svlen;
		1862	void *addr = SvPVbyte (scalar, svlen);
		1863	size_t len = SvUV (length);
		1864
		1865	if (offset < 0)
		1866	offset += svlen;
		1867
		1868	if (offset < 0 \|\| offset > svlen)
		1869	croak ("offset outside of scalar");
		1870
		1871	if (!SvOK (length) \|\| len + offset > svlen)
		1872	len = svlen - offset;
		1873
		1874	addr = (void *)(((intptr_t)addr) + offset);
		1875	eio_page_align (&addr, &len);
		1876	#if _POSIX_MEMLOCK_RANGE
		1877	RETVAL = munlock (addr, len);
		1878	#else
		1879	RETVAL = EIO_ENOSYS ();
		1880	#endif
		1881	}
		1882	OUTPUT:
		1883	RETVAL
		1884
		1885	int
		1886	munlockall ()
		1887	CODE:
		1888	#if _POSIX_MEMLOCK
		1889	munlockall ();
		1890	#else
		1891	RETVAL = EIO_ENOSYS ();
		1892	#endif
		1893	OUTPUT:
		1894	RETVAL
		1895
		1896	int
		1897	splice (aio_rfd rfh, SV off_in, aio_wfd wfh, SV off_out, size_t length, unsigned int flags)
		1898	CODE:
		1899	{
		1900	#if HAVE_LINUX_SPLICE
		1901	loff_t off_in_, off_out_;
		1902	RETVAL = splice (
		1903	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1904	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1905	length, flags
		1906	);
		1907	#else
		1908	RETVAL = EIO_ENOSYS ();
		1909	#endif
		1910	}
		1911	OUTPUT:
		1912	RETVAL
		1913
		1914	int
		1915	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1916	CODE:
		1917	#if HAVE_LINUX_SPLICE
		1918	RETVAL = tee (rfh, wfh, length, flags);
		1919	#else
		1920	RETVAL = EIO_ENOSYS ();
		1921	#endif
		1922	OUTPUT:
		1923	RETVAL
		1924
		1925	int
		1926	pipesize (aio_rfd rfh, int new_size = -1)
		1927	PROTOTYPE: $;$
		1928	CODE:
		1929	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1930	if (new_size >= 0)
		1931	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1932	else
		1933	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1934	#else
		1935	errno = ENOSYS;
		1936	RETVAL = -1;
		1937	#endif
		1938	OUTPUT:
		1939	RETVAL
		1940
		1941	void
		1942	pipe2 (int flags = 0)
		1943	PROTOTYPE: ;$
		1944	PPCODE:
		1945	{
		1946	int fd[2];
		1947	int res;
		1948
		1949	if (flags)
		1950	#if HAVE_PIPE2
		1951	res = pipe2 (fd, flags);
		1952	#else
		1953	res = (errno = ENOSYS, -1);
		1954	#endif
		1955	else
		1956	res = pipe (fd);
		1957
		1958	if (!res)
		1959	{
		1960	EXTEND (SP, 2);
		1961	PUSHs (newmortalFH (fd[0], O_RDONLY));
		1962	PUSHs (newmortalFH (fd[1], O_WRONLY));
		1963	}
		1964	}
		1965
		1966	void _on_next_submit (SV *cb)
		1967	CODE:
		1968	SvREFCNT_dec (on_next_submit);
		1969	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1970
		1971	PROTOTYPES: DISABLE
		1972
		1973	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1974
		1975	BOOT:
		1976	{
		1977	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1978	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1979	}
		1980
		1981	void
		1982	DESTROY (SV *self)
		1983	CODE:
		1984	{
		1985	aio_wd wd = SvAIO_WD (self);
		1986	#if HAVE_AT
		1987	{
		1988	SV *callback = &PL_sv_undef;
		1989	dREQ; /* clobbers next_pri :/ */
		1990	next_pri = req->pri; /* restore next_pri */
		1991	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1992	req->type = EIO_WD_CLOSE;
		1993	req->wd = wd;
		1994	REQ_SEND;
		1995	}
		1996	#else
		1997	eio_wd_close_sync (wd);
		1998	#endif
		1999	}
		2000
		2001	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		2002
		2003	void
		2004	cancel (aio_req_ornot req)
		2005	CODE:
		2006	eio_cancel (req);
		2007
		2008	void
		2009	cb (aio_req_ornot req, SV *callback = NO_INIT)
		2010	PPCODE:
		2011	{
		2012	if (GIMME_V != G_VOID)
		2013	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2014
		2015	if (items > 1)
		2016	{
		2017	SV *cb_cv = get_cb (callback);
		2018
		2019	SvREFCNT_dec (req->callback);
		2020	req->callback = SvREFCNT_inc (cb_cv);
		2021	}
		2022	}
		2023
		2024	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		2025
		2026	void
		2027	add (aio_req grp, ...)
		2028	PPCODE:
		2029	{
		2030	int i;
		2031
		2032	if (grp->int1 == 2)
		2033	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		2034
		2035	for (i = 1; i < items; ++i )
		2036	{
		2037	aio_req req;
		2038
		2039	if (GIMME_V != G_VOID)
		2040	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		2041
		2042	req = SvAIO_REQ (ST (i));
		2043
		2044	if (req)
		2045	eio_grp_add (grp, req);
		2046	}
		2047	}
		2048
		2049	void
		2050	cancel_subs (aio_req_ornot req)
		2051	CODE:
		2052	req_cancel_subs (req);
		2053
		2054	void
		2055	result (aio_req grp, ...)
		2056	CODE:
		2057	{
		2058	int i;
		2059	AV *av;
		2060
		2061	grp->errorno = errno;
		2062
		2063	av = newAV ();
		2064	av_extend (av, items - 1);
		2065
		2066	for (i = 1; i < items; ++i )
		2067	av_push (av, newSVsv (ST (i)));
		2068
		2069	SvREFCNT_dec (grp->sv1);
		2070	grp->sv1 = (SV *)av;
		2071	}
		2072
		2073	void
		2074	errno (aio_req grp, int errorno = errno)
		2075	CODE:
		2076	grp->errorno = errorno;
		2077
		2078	void
		2079	limit (aio_req grp, int limit)
		2080	CODE:
		2081	eio_grp_limit (grp, limit);
		2082
		2083	void
		2084	feed (aio_req grp, SV *callback = &PL_sv_undef)
		2085	CODE:
		2086	{
		2087	SvREFCNT_dec (grp->sv2);
		2088	grp->sv2 = newSVsv (callback);
		2089	grp->feed = aio_grp_feed;
		2090
		2091	if (grp->int2 <= 0)
		2092	grp->int2 = 2;
		2093
		2094	eio_grp_limit (grp, grp->int2);
		2095	}
		2096

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs. Revision 1.242 by root, Tue Jul 12 20:46:33 2016 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.1 by root, Sun Jul 10 17:07:44 2005 UTC vs.
Revision 1.242 by root, Tue Jul 12 20:46:33 2016 UTC