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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.237 by root, Thu Jun 25 18:08:47 2015 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>	21	# include <sys/mman.h>
38	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. on't complain if this fails for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
		36
		37	/* perl namespace pollution */
		38	#undef VERSION
		39
		40	/* perl stupidly overrides readdir and maybe others */
		41	/* with thread-unsafe versions, imagine that :( */
		42	#undef readdir
		43	#undef opendir
		44	#undef closedir
		45
		46	#ifdef _WIN32
		47
		48	// perl overrides all those nice libc functions
		49
		50	#undef malloc
		51	#undef free
		52	#undef open
		53	#undef read
		54	#undef write
		55	#undef send
		56	#undef recv
		57	#undef stat
		58	#undef lstat
		59	#undef fstat
		60	#undef truncate
		61	#undef ftruncate
		62	#undef open
		63	#undef link
		64	#undef close
		65	#undef unlink
		66	#undef mkdir
		67	#undef rmdir
		68	#undef rename
		69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
		79
		80	#define EIO_STRUCT_STAT struct _stati64
		81	#define EIO_STRUCT_STATI64
		82
		83	#else
		84
39	# include <sys/socket.h>	85	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	86	#include <sys/select.h>
		87	#include <unistd.h>
		88	#include <utime.h>
		89	#include <signal.h>
		90
		91	#define EIO_STRUCT_STAT Stat_t
		92
		93	#endif
		94
		95	/*****************************************************************************/
		96
		97	#if __GNUC__ >= 3
		98	# define expect(expr,value) __builtin_expect ((expr),(value))
		99	#else
		100	# define expect(expr,value) (expr)
		101	#endif
		102
		103	#define expect_false(expr) expect ((expr) != 0, 0)
		104	#define expect_true(expr) expect ((expr) != 0, 1)
		105
		106	/*****************************************************************************/
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
		109	typedef int aio_rfd; /* read file desriptor */
		110	typedef int aio_wfd; /* write file descriptor */
		111
		112	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		113
		114	#define EIO_REQ_MEMBERS \
		115	SV *callback; \
		116	SV *sv1, *sv2; \
		117	SV *sv3, *sv4; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	static int req_invoke (eio_req *req);
		127	#define EIO_FINISH(req) req_invoke (req)
		128	static void req_destroy (eio_req *grp);
		129	#define EIO_DESTROY(req) req_destroy (req)
		130
		131	#include "libeio/eio.c"
		132
		133	#if !HAVE_POSIX_FADVISE
		134	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#if !HAVE_POSIX_MADVISE
		138	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		139	#endif
		140
		141	#ifndef MAP_ANONYMOUS
		142	# ifdef MAP_ANON
		143	# define MAP_ANONYMOUS MAP_ANON
42	# else	144	# else
43	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	146	# endif
45	#endif	147	#endif
46		148
47	/* used for struct dirent, AIX doesn't provide it */	149	/* defines all sorts of constants to 0 unless they are already defined */
48	#ifndef NAME_MAX	150	/* also provides const_iv_ and const_niv_ macros for them */
49	# define NAME_MAX 4096	151	#include "def0.h"
50	#endif
51		152
52	#ifndef PTHREAD_STACK_MIN	153	#ifndef makedev
53	/* care for broken platforms, e.g. windows */	154	# define makedev(maj,min) (((maj) << 8) | (min))
54	# define PTHREAD_STACK_MIN 16384
55	#endif	155	#endif
56		156	#ifndef major
57	#if __ia64	157	# define major(dev) ((dev) >> 8)
58	# define STACKSIZE 65536
59	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
60	# define STACKSIZE PTHREAD_STACK_MIN
61	#else
62	# define STACKSIZE 16384
63	#endif	158	#endif
		159	#ifndef minor
		160	# define minor(dev) ((dev) & 0xff)
		161	#endif
64		162
65	/* buffer size for various temporary buffers */	163	#if PAGESIZE <= 0
66	#define AIO_BUFSIZE 65536	164	# define PAGESIZE sysconf (_SC_PAGESIZE)
		165	#endif
67		166
68	#define dBUF \	167	/*****************************************************************************/
69	char *aio_buf; \	168
70	LOCK (wrklock); \	169	static void
71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	170	fiemap (eio_req *req)
72	UNLOCK (wrklock); \	171	{
73	if (!aio_buf) \	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)
74	return -1;	190	return;
75		191
76	enum {	192	req->ptr1 = fiemap;
77	REQ_QUIT,
78	REQ_OPEN, REQ_CLOSE,
79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
80	REQ_SENDFILE,
81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
82	REQ_FSYNC, REQ_FDATASYNC,
83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
84	REQ_READDIR,
85	REQ_LINK, REQ_SYMLINK,
86	REQ_GROUP, REQ_NOP,
87	REQ_BUSY,
88	};
89		193
90	#define AIO_REQ_KLASS "IO::AIO::REQ"	194	fiemap->fm_start = req->offs;
91	#define AIO_GRP_KLASS "IO::AIO::GRP"	195	fiemap->fm_length = req->size;
		196	fiemap->fm_flags = req->int2;
		197	fiemap->fm_extent_count = count;
92		198
93	typedef struct aio_cb	199	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
94	{	200	return;
95	struct aio_cb *volatile next;
96		201
97	SV *data, *callback;	202	if (req->int3 >= 0 /* not autosizing */
98	SV *fh, *fh2;	203	|| !fiemap->fm_mapped_extents /* no more extents */
99	void *dataptr, *data2ptr;	204	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
100	Stat_t *statdata;	205	goto done;
101	off_t offset;
102	size_t length;
103	ssize_t result;
104		206
105	STRLEN dataoffset;	207	/* else we have to loop -
106	int type;	208	* it would be tempting (actually I tried that first) to just query the
107	int fd, fd2;	209	* number of extents needed, but linux often feels like not returning all
108	int errorno;	210	* extents, without telling us it left any out. this complicates
109	mode_t mode; /* open */	211	* this quite a bit.
		212	*/
110		213
111	unsigned char flags;	214	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
112	unsigned char pri;
113		215
114	SV *self; /* the perl counterpart of this request, if any */	216	for (;;)
115	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
116	} aio_cb;
117
118	enum {
119	FLAG_CANCELLED = 0x01,
120	};
121
122	typedef aio_cb *aio_req;
123	typedef aio_cb *aio_req_ornot;
124
125	enum {
126	PRI_MIN = -4,
127	PRI_MAX = 4,
128
129	DEFAULT_PRI = 0,
130	PRI_BIAS = -PRI_MIN,
131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
132	};
133
134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
135
136	static int started, wanted;
137	static volatile int nreqs;
138	static int respipe [2];
139
140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
142	#else
143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
144	#endif
145
146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
148
149	/* worker threasd management */
150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
151
152	typedef struct worker {
153	/* locked by wrklock */
154	struct worker *prev, *next;
155
156	pthread_t tid;
157
158	/* locked by reslock, reqlock or wrklock */
159	aio_req req; /* currently processed request */
160	void *dbuf;
161	DIR *dirp;
162	} worker;
163
164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
165
166	static void worker_clear (worker *wrk)
167	{
168	if (wrk->dirp)
169	{	217	{
170	closedir (wrk->dirp);	218	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
171	wrk->dirp = 0;	219	char scratch[3072];
172	}	220	struct fiemap *incmap = (struct fiemap *)scratch;
173		221
174	if (wrk->dbuf)	222	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
175	{	223	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
176	free (wrk->dbuf);	224	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
177	wrk->dbuf = 0;	225	incmap->fm_flags = fiemap->fm_flags;
178	}	226	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
179	}
180		227
181	static void worker_free (worker *wrk)	228	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
182	{
183	wrk->next->prev = wrk->prev;
184	wrk->prev->next = wrk->next;
185
186	free (wrk);
187	}
188
189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
192
193	/*
194	* a somewhat faster data structure might be nice, but
195	* with 8 priorities this actually needs <20 insns
196	* per shift, the most expensive operation.
197	*/
198	typedef struct {
199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
200	int size;
201	} reqq;
202
203	static reqq req_queue;
204	static reqq res_queue;
205
206	int reqq_push (reqq *q, aio_req req)
207	{
208	int pri = req->pri;
209	req->next = 0;
210
211	if (q->qe[pri])
212	{
213	q->qe[pri]->next = req;
214	q->qe[pri] = req;
215	}
216	else
217	q->qe[pri] = q->qs[pri] = req;
218
219	return q->size++;
220	}
221
222	aio_req reqq_shift (reqq *q)
223	{
224	int pri;
225
226	if (!q->size)
227	return 0;	229	return;
228		230
229	--q->size;	231	if (!incmap->fm_mapped_extents)
		232	goto done;
230		233
231	for (pri = NUM_PRI; pri--; )	234	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
232	{	235	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
233	aio_req req = q->qs[pri];	236	errno = ENOMEM;
234
235	if (req)	237	if (!fiemap)
		238	return;
		239
		240	req->ptr1 = fiemap;
		241
		242	for (count = 0; count < incmap->fm_mapped_extents; ++count)
236	{	243	{
237	if (!(q->qs[pri] = req->next))	244	struct fiemap_extent *e = incmap->fm_extents + count;
238	q->qe[pri] = 0;
239		245
240	return req;	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
241	}	254	}
242	}	255	}
243		256
244	abort ();	257	done:
245	}	258	req->result = 0;
246		259
247	static int poll_cb ();	260	#else
248	static void req_invoke (aio_req req);	261	errno = ENOSYS;
		262	#endif
		263	}
		264
		265	/*****************************************************************************/
		266
		267	enum {
		268	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		269	};
		270
		271	typedef eio_req *aio_req;
		272	typedef eio_req *aio_req_ornot;
		273	typedef eio_wd aio_wd;
		274
		275	static SV *on_next_submit;
		276	static int next_pri = EIO_PRI_DEFAULT;
		277	static int max_outstanding;
		278
		279	static s_epipe respipe;
		280
249	static void req_free (aio_req req);	281	static void req_destroy (aio_req req);
250	static void req_cancel (aio_req req);	282	static void req_cancel (aio_req req);
251		283
		284	static void
		285	want_poll (void)
		286	{
		287	/* write a dummy byte to the pipe so fh becomes ready */
		288	s_epipe_signal (&respipe);
		289	}
		290
		291	static void
		292	done_poll (void)
		293	{
		294	/* read any signals sent by the worker threads */
		295	s_epipe_drain (&respipe);
		296	}
		297
252	/* must be called at most once */	298	/* must be called at most once */
253	static SV *req_sv (aio_req req, const char *klass)	299	static SV *
		300	req_sv (aio_req req, HV *stash)
254	{	301	{
255	if (!req->self)	302	if (!req->self)
256	{	303	{
257	req->self = (SV *)newHV ();	304	req->self = (SV *)newHV ();
258	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	305	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
259	}	306	}
260		307
261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	308	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
262	}	309	}
263		310
264	static aio_req SvAIO_REQ (SV *sv)	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)
265	{	319	{
266	MAGIC *mg;	320	MAGIC *mg;
267		321
268	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	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")))
269	croak ("object of class " AIO_REQ_KLASS " expected");	327	croak ("object of class IO::AIO::REQ expected");
270		328
271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	329	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
272		330
273	return mg ? (aio_req)mg->mg_ptr : 0;	331	return mg ? (aio_req)mg->mg_ptr : 0;
274	}	332	}
275		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;
		368	}
		369
		370	static void
276	static void aio_grp_feed (aio_req grp)	371	aio_grp_feed (aio_req grp)
277	{	372	{
278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	373	if (grp->sv2 && SvOK (grp->sv2))
279	{	374	{
280	int old_len = grp->length;
281
282	if (grp->fh2 && SvOK (grp->fh2))
283	{
284	dSP;	375	dSP;
285		376
286	ENTER;	377	ENTER;
287	SAVETMPS;	378	SAVETMPS;
288	PUSHMARK (SP);	379	PUSHMARK (SP);
289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	380	XPUSHs (req_sv (grp, aio_grp_stash));
290	PUTBACK;	381	PUTBACK;
291	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	382	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
292	SPAGAIN;	383	SPAGAIN;
293	FREETMPS;	384	FREETMPS;
294	LEAVE;	385	LEAVE;
295	}
296
297	/* stop if no progress has been made */
298	if (old_len == grp->length)
299	{
300	SvREFCNT_dec (grp->fh2);
301	grp->fh2 = 0;
302	break;
303	}
304	}	386	}
305	}	387	}
306		388
307	static void aio_grp_dec (aio_req grp)	389	static void
		390	req_submit (eio_req *req)
308	{	391	{
309	--grp->length;	392	eio_submit (req);
310		393
311	/* call feeder, if applicable */	394	if (expect_false (on_next_submit))
312	aio_grp_feed (grp);
313
314	/* finish, if done */
315	if (!grp->length && grp->fd)
316	{	395	{
317	req_invoke (grp);	396	dSP;
318	req_free (grp);	397	SV *cb = sv_2mortal (on_next_submit);
		398
		399	on_next_submit = 0;
		400
		401	PUSHMARK (SP);
		402	PUTBACK;
		403	call_sv (cb, G_DISCARD | G_EVAL);
319	}	404	}
320	}	405	}
321		406
322	static void poll_wait ()	407	static int
		408	req_invoke (eio_req *req)
323	{	409	{
324	fd_set rfd;	410	if (req->flags & FLAG_SV2_RO_OFF)
		411	SvREADONLY_off (req->sv2);
325		412
326	while (nreqs)	413	if (!EIO_CANCELLED (req) && req->callback)
327	{	414	{
328	int size;
329	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
330	LOCK (reslock);
331	#endif
332	size = res_queue.size;
333	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
334	UNLOCK (reslock);
335	#endif
336
337	if (size)
338	return;
339
340	FD_ZERO(&rfd);
341	FD_SET(respipe [0], &rfd);
342
343	select (respipe [0] + 1, &rfd, 0, 0, 0);
344	}
345	}
346
347	static void req_invoke (aio_req req)
348	{
349	dSP;	415	dSP;
350		416	static SV *sv_result_cache; /* caches the result integer SV */
351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	417	SV *sv_result;
352	{
353	errno = req->errorno;
354		418
355	ENTER;	419	ENTER;
356	SAVETMPS;	420	SAVETMPS;
357	PUSHMARK (SP);	421	PUSHMARK (SP);
358	EXTEND (SP, 1);	422	EXTEND (SP, 1);
359		423
		424	/* do not recreate the result IV from scratch each time */
		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	}
		431	else
		432	{
		433	sv_result = newSViv (req->result);
		434	SvREADONLY_on (sv_result);
		435	}
		436
360	switch (req->type)	437	switch (req->type)
361	{	438	{
		439	case EIO_WD_OPEN:
		440	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		441	break;
		442
362	case REQ_READDIR:	443	case EIO_READDIR:
363	{	444	{
364	SV *rv = &PL_sv_undef;	445	SV *rv = &PL_sv_undef;
365		446
366	if (req->result >= 0)	447	if (req->result >= 0)
367	{	448	{
368	int i;	449	int i;
369	char *buf = req->data2ptr;	450	char *names = (char *)req->ptr2;
		451	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
370	AV *av = newAV ();	452	AV *av = newAV ();
371		453
372	av_extend (av, req->result - 1);	454	av_extend (av, req->result - 1);
373		455
374	for (i = 0; i < req->result; ++i)	456	for (i = 0; i < req->result; ++i)
375	{	457	{
376	SV *sv = newSVpv (buf, 0);	458	if (req->int1 & EIO_READDIR_DENTS)
		459	{
		460	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
377		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
378	av_store (av, i, sv);	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);
379	buf += SvCUR (sv) + 1;	490	names += SvCUR (name) + 1;
		491	}
380	}	492	}
381		493
382	rv = sv_2mortal (newRV_noinc ((SV *)av));	494	rv = sv_2mortal (newRV_noinc ((SV *)av));
383	}	495	}
384		496
385	PUSHs (rv);	497	PUSHs (rv);
		498
		499	if (req->int1 & EIO_READDIR_CUSTOM1)
		500	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
386	}	501	}
387	break;	502	break;
388		503
389	case REQ_OPEN:	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:
390	{	510	{
391	/* convert fd to fh */	511	SV *rv = &PL_sv_undef;
392	SV *fh;	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));
393		523
394	PUSHs (sv_2mortal (newSViv (req->result)));	524	rv = sv_2mortal (newRV_noinc ((SV *)hv));
395	PUTBACK;
396	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
397	SPAGAIN;
398		525
399	fh = SvREFCNT_inc (POPs);	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
400		539
401	PUSHMARK (SP);	540	PUSHs (rv);
402	XPUSHs (sv_2mortal (fh));
403	}	541	}
		542
404	break;	543	break;
405		544
406	case REQ_GROUP:	545	case EIO_GROUP:
407	req->fd = 2; /* mark group as finished */	546	req->int1 = 2; /* mark group as finished */
408		547
409	if (req->data)	548	if (req->sv1)
410	{	549	{
411	int i;	550	int i;
412	AV *av = (AV *)req->data;	551	AV *av = (AV *)req->sv1;
413		552
414	EXTEND (SP, AvFILL (av) + 1);	553	EXTEND (SP, AvFILL (av) + 1);
415	for (i = 0; i <= AvFILL (av); ++i)	554	for (i = 0; i <= AvFILL (av); ++i)
416	PUSHs (*av_fetch (av, i, 0));	555	PUSHs (*av_fetch (av, i, 0));
417	}	556	}
418	break;	557	break;
419		558
420	case REQ_NOP:	559	case EIO_NOP:
421	case REQ_BUSY:	560	case EIO_BUSY:
422	break;	561	break;
423		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
		595	case EIO_CUSTOM:
		596	if (req->feed == fiemap)
		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 */
		639
424	default:	640	default:
425	PUSHs (sv_2mortal (newSViv (req->result)));	641	PUSHs (sv_result);
426	break;	642	break;
427	}	643	}
428		644
		645	errno = req->errorno;
429		646
430	PUTBACK;	647	PUTBACK;
431	call_sv (req->callback, G_VOID | G_EVAL);	648	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
432	SPAGAIN;	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;
433		655
434	FREETMPS;	656	FREETMPS;
435	LEAVE;	657	LEAVE;
		658
		659	PUTBACK;
436	}	660	}
437		661
438	if (req->grp)	662	return !!SvTRUE (ERRSV);
439	{
440	aio_req grp = req->grp;
441
442	/* unlink request */
443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
445
446	if (grp->grp_first == req)
447	grp->grp_first = req->grp_next;
448
449	aio_grp_dec (grp);
450	}
451
452	if (SvTRUE (ERRSV))
453	{
454	req_free (req);
455	croak (0);
456	}
457	}	663	}
458		664
459	static void req_free (aio_req req)	665	static void
		666	req_destroy (aio_req req)
460	{	667	{
461	if (req->self)	668	if (req->self)
462	{	669	{
463	sv_unmagic (req->self, PERL_MAGIC_ext);	670	sv_unmagic (req->self, PERL_MAGIC_ext);
464	SvREFCNT_dec (req->self);	671	SvREFCNT_dec (req->self);
465	}	672	}
466		673
467	SvREFCNT_dec (req->data);
468	SvREFCNT_dec (req->fh);	674	SvREFCNT_dec (req->sv1);
469	SvREFCNT_dec (req->fh2);	675	SvREFCNT_dec (req->sv2);
		676	SvREFCNT_dec (req->sv3);
		677	SvREFCNT_dec (req->sv4);
470	SvREFCNT_dec (req->callback);	678	SvREFCNT_dec (req->callback);
471	Safefree (req->statdata);
472		679
473	if (req->type == REQ_READDIR)
474	free (req->data2ptr);
475
476	Safefree (req);	680	free (req);
477	}	681	}
478		682
		683	static void
479	static void req_cancel_subs (aio_req grp)	684	req_cancel_subs (aio_req grp)
480	{	685	{
481	aio_req sub;
482
483	if (grp->type != REQ_GROUP)	686	if (grp->type != EIO_GROUP)
484	return;	687	return;
485		688
486	SvREFCNT_dec (grp->fh2);	689	SvREFCNT_dec (grp->sv2);
487	grp->fh2 = 0;	690	grp->sv2 = 0;
488		691
489	for (sub = grp->grp_first; sub; sub = sub->grp_next)	692	eio_grp_cancel (grp);
490	req_cancel (sub);
491	}	693	}
492		694
493	static void req_cancel (aio_req req)	695	static void ecb_cold
		696	create_respipe (void)
494	{	697	{
495	req->flags |= FLAG_CANCELLED;	698	if (s_epipe_renew (&respipe))
496		699	croak ("IO::AIO: unable to initialize result pipe");
497	req_cancel_subs (req);
498	}	700	}
499		701
500	static int poll_cb ()	702	static void
		703	poll_wait (void)
501	{	704	{
502	dSP;	705	while (eio_nreqs ())
503	int count = 0;	706	{
504	int do_croak = 0;	707	int size;
505	aio_req req;
506		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	{
507	for (;;)	725	for (;;)
508	{	726	{
509	LOCK (reslock);	727	int res = eio_poll ();
510	req = reqq_shift (&res_queue);
511		728
512	if (req)	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
		779	return 0;
		780	}
		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)
513	{	835	{
514	if (!res_queue.size)	836	path = AvARRAY (rv)[1];
		837	wdob = AvARRAY (rv)[0];
		838
		839	if (SvOK (wdob))
515	{	840	{
516	/* read any signals sent by the worker threads */	841	*wd = SvAIO_WD (wdob);
517	char buf [32];	842	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
518	while (read (respipe [0], buf, 32) == 32)
519	;
520	}	843	}
		844	else
		845	*wd = EIO_INVALID_WD;
521	}	846	}
522		847	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
523	UNLOCK (reslock);
524
525	if (!req)
526	break;
527
528	--nreqs;
529
530	if (req->type == REQ_QUIT)
531	started--;
532	else if (req->type == REQ_GROUP && req->length)
533	{	848	{
534	req->fd = 1; /* mark request as delayed */	849	*wd = (aio_wd)(long)SvIVX (rv);
535	continue;	850	*wdsv = SvREFCNT_inc_NN (rv);
		851	*ptr = ".";
		852	return; /* path set to "." */
536	}	853	}
537	else	854	else
538	{	855	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
539	if (req->type == REQ_READ)
540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
541
542	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
543	SvREADONLY_off (req->data);
544
545	if (req->statdata)
546	{
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;
549	PL_statcache = *(req->statdata);
550	}
551
552	req_invoke (req);
553
554	count++;
555	}
556
557	req_free (req);
558	}	856	}
559		857
560	return count;	858	*pathsv = newSVsv (path);
		859	*ptr = SvPVbyte_nolen (*pathsv);
561	}	860	}
562		861
563	static void *aio_proc(void *arg);	862	static void ecb_noinline
564		863	req_set_path1 (aio_req req, SV *path)
565	static void start_thread (void)
566	{	864	{
567	sigset_t fullsigset, oldsigset;	865	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
568	pthread_attr_t attr;	866	}
569		867
570	worker *wrk = calloc (1, sizeof (worker));	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;
571		872
572	if (!wrk)	873	switch (SvTYPE (rv))
573	croak ("unable to allocate worker thread data");
574
575	pthread_attr_init (&attr);
576	pthread_attr_setstacksize (&attr, STACKSIZE);
577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
578
579	sigfillset (&fullsigset);
580
581	LOCK (wrklock);
582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
583
584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
585	{	874	{
586	wrk->prev = &wrk_first;	875	case SVt_PVIO:
587	wrk->next = wrk_first.next;	876	case SVt_PVLV:
588	wrk_first.next->prev = wrk;	877	case SVt_PVGV:
589	wrk_first.next = wrk;	878	req->type = type_fh;
590	started++;	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;
591	}	887	}
592	else
593	free (wrk);
594
595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
596	UNLOCK (wrklock);
597	}	888	}
598		889
599	static void req_send (aio_req req)	890	XS(boot_IO__AIO) ecb_cold;
600	{
601	while (started < wanted && nreqs >= started)
602	start_thread ();
603		891
604	++nreqs;	892	MODULE = IO::AIO PACKAGE = IO::AIO
605		893
606	LOCK (reqlock);	894	PROTOTYPES: ENABLE
607	reqq_push (&req_queue, req);
608	pthread_cond_signal (&reqwait);
609	UNLOCK (reqlock);
610	}
611		895
612	static void end_thread (void)	896	BOOT:
613	{	897	{
614	aio_req req;	898	static const struct {
		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 },
615		905
616	Newz (0, req, 1, aio_cb);	906	/* you have to re-run ./gendef0 after adding/removing any constants here */
		907	/* the first block can be undef if missing */
		908	const_iv (ENOSYS)
		909	const_iv (EXDEV)
		910	const_iv (EBADR)
617		911
618	req->type = REQ_QUIT;	912	/* for lseek */
619	req->pri = PRI_MAX + PRI_BIAS;	913	const_iv (SEEK_DATA)
		914	const_iv (SEEK_HOLE)
620		915
621	req_send (req);	916	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
622	}	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)
623		922
624	static void min_parallel (int nthreads)	923	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
625	{	924	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
626	if (wanted < nthreads)	925	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
627	wanted = nthreads;	926	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
628	}	927	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
629		928
630	static void max_parallel (int nthreads)	929	/* the second block will be 0 when missing */
631	{	930	const_iv (O_RDONLY)
632	int cur = started;	931	const_iv (O_WRONLY)
		932	const_iv (O_RDWR)
		933	const_iv (O_CREAT)
		934	const_iv (O_TRUNC)
		935	const_iv (O_EXCL)
		936	const_iv (O_APPEND)
633		937
634	if (wanted > nthreads)	938	const_iv (O_ASYNC)
635	wanted = nthreads;	939	const_iv (O_DIRECT)
		940	const_iv (O_NOATIME)
636		941
637	while (cur > wanted)	942	const_iv (O_CLOEXEC)
638	{	943	const_iv (O_NOCTTY)
639	end_thread ();	944	const_iv (O_NOFOLLOW)
640	cur--;	945	const_iv (O_NONBLOCK)
641	}	946	const_iv (O_EXEC)
		947	const_iv (O_SEARCH)
		948	const_iv (O_DIRECTORY)
		949	const_iv (O_DSYNC)
		950	const_iv (O_RSYNC)
		951	const_iv (O_SYNC)
		952	const_iv (O_PATH)
		953	const_iv (O_TMPFILE)
		954	const_iv (O_TTY_INIT)
642		955
643	while (started > wanted)	956	const_iv (S_IFIFO)
644	{	957	const_iv (S_IFCHR)
645	poll_wait ();	958	const_iv (S_IFBLK)
646	poll_cb ();	959	const_iv (S_IFLNK)
647	}	960	const_iv (S_IFREG)
648	}	961	const_iv (S_IFDIR)
		962	const_iv (S_IFWHT)
		963	const_iv (S_IFSOCK)
		964	const_iv (S_IFMT)
649		965
650	static void create_pipe ()	966	const_iv (ST_RDONLY)
651	{	967	const_iv (ST_NOSUID)
652	if (pipe (respipe))	968	const_iv (ST_NODEV)
653	croak ("unable to initialize result pipe");	969	const_iv (ST_NOEXEC)
		970	const_iv (ST_SYNCHRONOUS)
		971	const_iv (ST_MANDLOCK)
		972	const_iv (ST_WRITE)
		973	const_iv (ST_APPEND)
		974	const_iv (ST_IMMUTABLE)
		975	const_iv (ST_NOATIME)
		976	const_iv (ST_NODIRATIME)
		977	const_iv (ST_RELATIME)
654		978
655	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	979	const_iv (PROT_NONE)
656	croak ("cannot set result pipe to nonblocking mode");	980	const_iv (PROT_EXEC)
		981	const_iv (PROT_READ)
		982	const_iv (PROT_WRITE)
657		983
658	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	984	const_iv (MAP_PRIVATE)
659	croak ("cannot set result pipe to nonblocking mode");	985	const_iv (MAP_SHARED)
660	}	986	const_iv (MAP_FIXED)
		987	const_iv (MAP_ANONYMOUS)
661		988
662	/*****************************************************************************/	989	/* linuxish */
663	/* work around various missing functions */	990	const_iv (MAP_HUGETLB)
		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)
664		999
665	#if !HAVE_PREADWRITE	1000	const_iv (FIEMAP_FLAG_SYNC)
666	# define pread aio_pread	1001	const_iv (FIEMAP_FLAG_XATTR)
667	# define pwrite aio_pwrite	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)
668		1014
669	/*	1015	const_iv (SPLICE_F_MOVE)
670	* make our pread/pwrite safe against themselves, but not against	1016	const_iv (SPLICE_F_NONBLOCK)
671	* normal read/write by using a mutex. slows down execution a lot,	1017	const_iv (SPLICE_F_MORE)
672	* but that's your problem, not mine.	1018	const_iv (SPLICE_F_GIFT)
673	*/
674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
675		1019
676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1020	/* these are libeio constants, and are independent of gendef0 */
677	{	1021	const_eio (SEEK_SET)
678	ssize_t res;	1022	const_eio (SEEK_CUR)
679	off_t ooffset;	1023	const_eio (SEEK_END)
680		1024
681	LOCK (preadwritelock);	1025	const_eio (MCL_FUTURE)
682	ooffset = lseek (fd, 0, SEEK_CUR);	1026	const_eio (MCL_CURRENT)
683	lseek (fd, offset, SEEK_SET);
684	res = read (fd, buf, count);
685	lseek (fd, ooffset, SEEK_SET);
686	UNLOCK (preadwritelock);
687		1027
688	return res;	1028	const_eio (MS_ASYNC)
689	}	1029	const_eio (MS_INVALIDATE)
		1030	const_eio (MS_SYNC)
690		1031
691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1032	const_eio (MT_MODIFY)
692	{
693	ssize_t res;
694	off_t ooffset;
695		1033
696	LOCK (preadwritelock);	1034	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
697	ooffset = lseek (fd, 0, SEEK_CUR);	1035	const_eio (SYNC_FILE_RANGE_WRITE)
698	lseek (fd, offset, SEEK_SET);	1036	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
699	res = write (fd, buf, count);
700	lseek (fd, offset, SEEK_SET);
701	UNLOCK (preadwritelock);
702		1037
703	return res;	1038	const_eio (FALLOC_FL_KEEP_SIZE)
704	}	1039	const_eio (FALLOC_FL_PUNCH_HOLE)
705	#endif	1040	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1041	const_eio (FALLOC_FL_ZERO_RANGE)
706		1042
707	#if !HAVE_FDATASYNC	1043	const_eio (READDIR_DENTS)
708	# define fdatasync fsync	1044	const_eio (READDIR_DIRS_FIRST)
709	#endif	1045	const_eio (READDIR_STAT_ORDER)
		1046	const_eio (READDIR_FOUND_UNKNOWN)
710		1047
711	#if !HAVE_READAHEAD	1048	const_eio (DT_UNKNOWN)
712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	1049	const_eio (DT_FIFO)
713		1050	const_eio (DT_CHR)
714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	1051	const_eio (DT_DIR)
715	{	1052	const_eio (DT_BLK)
716	dBUF;	1053	const_eio (DT_REG)
717		1054	const_eio (DT_LNK)
718	while (count > 0)	1055	const_eio (DT_SOCK)
719	{	1056	const_eio (DT_WHT)
720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
721
722	pread (fd, aio_buf, len, offset);
723	offset += len;
724	count -= len;
725	}
726
727	errno = 0;
728	}
729
730	#endif
731
732	#if !HAVE_READDIR_R
733	# define readdir_r aio_readdir_r
734
735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
736
737	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
738	{
739	struct dirent *e;
740	int errorno;
741
742	LOCK (readdirlock);
743
744	e = readdir (dirp);
745	errorno = errno;
746
747	if (e)
748	{
749	*res = ent;
750	strcpy (ent->d_name, e->d_name);
751	}
752	else
753	*res = 0;
754
755	UNLOCK (readdirlock);
756
757	errno = errorno;
758	return e ? 0 : -1;
759	}
760	#endif
761
762	/* sendfile always needs emulation */
763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
764	{
765	ssize_t res;
766
767	if (!count)
768	return 0;
769
770	#if HAVE_SENDFILE
771	# if __linux
772	res = sendfile (ofd, ifd, &offset, count);
773
774	# elif __freebsd
775	/*
776	* Of course, the freebsd sendfile is a dire hack with no thoughts
777	* wasted on making it similar to other I/O functions.
778	*/
779	{
780	off_t sbytes;
781	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
782
783	if (res < 0 && sbytes)
784	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
785	res = sbytes;
786	}	1057	};
787		1058
788	# elif __hpux	1059	aio_stash = gv_stashpv ("IO::AIO" , 1);
789	res = sendfile (ofd, ifd, offset, count, 0, 0);	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);
790		1063
791	# elif __solaris	1064	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
792	{	1065	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
793	struct sendfilevec vec;
794	size_t sbytes;
795		1066
796	vec.sfv_fd = ifd;	1067	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
797	vec.sfv_flag = 0;
798	vec.sfv_off = offset;
799	vec.sfv_len = count;
800		1068
801	res = sendfilev (ofd, &vec, 1, &sbytes);	1069	reinit ();
		1070	}
802		1071
803	if (res < 0 && sbytes)	1072	void
		1073	reinit ()
		1074	PROTOTYPE:
		1075
		1076	void
		1077	max_poll_reqs (unsigned int nreqs)
		1078	PROTOTYPE: $
		1079	CODE:
		1080	eio_set_max_poll_reqs (nreqs);
		1081
		1082	void
		1083	max_poll_time (double nseconds)
		1084	PROTOTYPE: $
		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:
		1121	{
		1122	dREQ;
		1123
		1124	req->type = EIO_WD_OPEN;
		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;
804	res = sbytes;	1173	req->size = nbytes;
805	}	1174	req->int2 = flags;
806		1175
807	# endif	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
808	#else	1211	#else
809	res = -1;	1212	pipe (pipefd) < 0
810	errno = ENOSYS;	1213	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
811	#endif	1214	#endif
812		1215	|| close (pipefd [1]) < 0
813	if (res < 0
814	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
815	#if __solaris
816	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
817	#endif
818	)
819	)
820	{
821	/* emulate sendfile. this is a major pain in the ass */
822	dBUF;
823
824	res = 0;
825
826	while (count)
827	{
828	ssize_t cnt;
829
830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
831
832	if (cnt <= 0)
833	{	1216	)
834	if (cnt && !res) res = -1;	1217	abort (); /*D*/
835	break;
836	}
837		1218
838	cnt = write (ofd, aio_buf, cnt);	1219	close_fd = pipefd [0];
839
840	if (cnt <= 0)
841	{
842	if (cnt && !res) res = -1;
843	break;
844	}
845
846	offset += cnt;
847	res += cnt;
848	count -= cnt;
849	}
850	}
851
852	return res;
853	}
854
855	/* read a full directory */
856	static void scandir_ (aio_req req, worker *self)
857	{
858	DIR *dirp;
859	union
860	{
861	struct dirent d;
862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
863	} *u;
864	struct dirent *entp;
865	char *name, *names;
866	int memlen = 4096;
867	int memofs = 0;
868	int res = 0;
869	int errorno;
870
871	LOCK (wrklock);
872	self->dirp = dirp = opendir (req->dataptr);
873	self->dbuf = u = malloc (sizeof (*u));
874	UNLOCK (wrklock);
875
876	req->data2ptr = names = malloc (memlen);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}	1220	}
909	}
910		1221
911	if (errno)	1222	req->type = EIO_DUP2;
912	res = -1;	1223	req->int1 = close_fd;
913		1224	req->sv2 = newSVsv (fh);
914	req->result = res;	1225	req->int2 = fd;
915	}
916		1226
917	/*****************************************************************************/	1227	REQ_SEND;
918
919	static void *aio_proc (void *thr_arg)
920	{
921	aio_req req;
922	int type;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}	1228	}
1010		1229
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}
1069
1070	#define dREQ \
1071	aio_req req; \
1072	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \
1074	\
1075	if (SvOK (callback) && !SvROK (callback)) \
1076	croak ("callback must be undef or of reference type"); \
1077	\
1078	Newz (0, req, 1, aio_cb); \
1079	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \
1081	\
1082	req->callback = newSVsv (callback); \
1083	req->pri = req_pri
1084
1085	#define REQ_SEND \
1086	req_send (req); \
1087	\
1088	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090
1091	MODULE = IO::AIO PACKAGE = IO::AIO
1092
1093	PROTOTYPES: ENABLE
1094
1095	BOOT:
1096	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101
1102	create_pipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105
1106	void	1230	void
1107	min_parallel (nthreads)	1231	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1108	int nthreads	1232	PPCODE:
1109	PROTOTYPE: $
1110
1111	void
1112	max_parallel (nthreads)
1113	int nthreads
1114	PROTOTYPE: $
1115
1116	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$
1123	PPCODE:
1124	{	1233	{
		1234	int fd = s_fileno_croak (fh, 0);
1125	dREQ;	1235	dREQ;
1126		1236
1127	req->type = REQ_OPEN;	1237	req->type = EIO_SEEK;
1128	req->data = newSVsv (pathname);	1238	req->sv1 = newSVsv (fh);
1129	req->dataptr = SvPVbyte_nolen (req->data);	1239	req->int1 = fd;
1130	req->fd = flags;	1240	req->offs = SvVAL64 (offset);
1131	req->mode = mode;	1241	req->int2 = whence;
1132		1242
1133	REQ_SEND;	1243	REQ_SEND;
1134	}	1244	}
1135		1245
1136	void	1246	void
1137	aio_close (fh,callback=&PL_sv_undef)	1247	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$
1141	ALIAS:	1248	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC
1145	PPCODE:
1146	{
1147	dREQ;
1148
1149	req->type = ix;
1150	req->fh = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152
1153	REQ_SEND (req);
1154	}
1155
1156	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:
1165	aio_read = REQ_READ	1249	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	1250	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$
1168	PPCODE:	1251	PPCODE:
1169	{	1252	{
1170	aio_req req;
1171	STRLEN svlen;	1253	STRLEN svlen;
		1254	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	1255	char *svptr = SvPVbyte (data, svlen);
1173		1256	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		1257
1177	if (dataoffset < 0)	1258	if (dataoffset < 0)
1178	dataoffset += svlen;	1259	dataoffset += svlen;
1179		1260
1180	if (dataoffset < 0 || dataoffset > svlen)	1261	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	1262	croak ("dataoffset outside of data scalar");
1182		1263
1183	if (ix == REQ_WRITE)	1264	if (ix == EIO_WRITE)
1184	{	1265	{
1185	/* write: check length and adjust. */	1266	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	1267	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	1268	len = svlen - dataoffset;
1188	}	1269	}
1189	else	1270	else
1190	{	1271	{
1191	/* read: grow scalar as necessary */	1272	/* read: check type and grow scalar as necessary */
		1273	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1192	svptr = SvGROW (data, length + dataoffset);	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");
1193	}	1277	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		1278
1198	{	1279	{
1199	dREQ;	1280	dREQ;
1200		1281
1201	req->type = ix;	1282	req->type = ix;
1202	req->fh = newSVsv (fh);	1283	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1284	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	1285	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	1286	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	1287	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1288	req->ptr2 = (char *)svptr + dataoffset;
		1289	req->stroffset = dataoffset;
1209		1290
1210	if (!SvREADONLY (data))	1291	if (!SvREADONLY (data))
1211	{	1292	{
1212	SvREADONLY_on (data);	1293	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1294	req->flags |= FLAG_SV2_RO_OFF;
1214	}	1295	}
1215		1296
1216	REQ_SEND;	1297	REQ_SEND;
1217	}	1298	}
1218	}	1299	}
1219		1300
1220	void	1301	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1302	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1222	SV * out_fh	1303	ALIAS:
1223	SV * in_fh	1304	aio_readlink = EIO_READLINK
1224	UV in_offset	1305	aio_realpath = EIO_REALPATH
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$
1228	PPCODE:	1306	PPCODE:
1229	{	1307	{
		1308	dREQ;
		1309
		1310	req->type = ix;
		1311	req_set_path1 (req, pathname);
		1312
		1313	REQ_SEND;
		1314	}
		1315
		1316	void
		1317	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1318	PPCODE:
		1319	{
		1320	int ifd = s_fileno_croak (in_fh , 0);
		1321	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	1322	dREQ;
1231		1323
1232	req->type = REQ_SENDFILE;	1324	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1325	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1326	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	1327	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1328	req->int2 = ifd;
1237	req->offset = in_offset;	1329	req->offs = in_offset;
1238	req->length = length;	1330	req->size = length;
1239		1331
1240	REQ_SEND;	1332	REQ_SEND;
1241	}	1333	}
1242		1334
1243	void	1335	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1336	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$
1250	PPCODE:	1337	PPCODE:
1251	{	1338	{
		1339	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	1340	dREQ;
1253		1341
1254	req->type = REQ_READAHEAD;	1342	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	1343	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1344	req->int1 = fd;
1257	req->offset = offset;	1345	req->offs = offset;
1258	req->length = length;	1346	req->size = length;
1259		1347
1260	REQ_SEND;	1348	REQ_SEND;
1261	}	1349	}
1262		1350
1263	void	1351	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1352	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1353	ALIAS:
1268	aio_stat = REQ_STAT	1354	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	1355	aio_lstat = EIO_LSTAT
		1356	aio_statvfs = EIO_STATVFS
1270	PPCODE:	1357	PPCODE:
1271	{	1358	{
1272	dREQ;	1359	dREQ;
1273		1360
1274	New (0, req->statdata, 1, Stat_t);	1361	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280
1281	if (SvPOK (fh_or_path))
1282	{
1283	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);
1286	}
1287	else
1288	{
1289	req->type = REQ_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}
1293		1362
1294	REQ_SEND;	1363	REQ_SEND;
1295	}	1364	}
1296		1365
		1366	UV
		1367	major (UV dev)
		1368	ALIAS:
		1369	minor = 1
		1370	CODE:
		1371	RETVAL = ix ? major (dev) : minor (dev);
		1372	OUTPUT:
		1373	RETVAL
		1374
		1375	UV
		1376	makedev (UV maj, UV min)
		1377	CODE:
		1378	RETVAL = makedev (maj, min);
		1379	OUTPUT:
		1380	RETVAL
		1381
1297	void	1382	void
		1383	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1384	PPCODE:
		1385	{
		1386	dREQ;
		1387
		1388	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1389	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1390	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1391
		1392	REQ_SEND;
		1393	}
		1394
		1395	void
		1396	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1397	PPCODE:
		1398	{
		1399	dREQ;
		1400
		1401	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1402	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1403
		1404	REQ_SEND;
		1405	}
		1406
		1407	void
		1408	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1409	PPCODE:
		1410	{
		1411	dREQ;
		1412
		1413	req->int2 = mode;
		1414	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1415
		1416	REQ_SEND;
		1417	}
		1418
		1419	void
		1420	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1421	PPCODE:
		1422	{
		1423	dREQ;
		1424
		1425	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1426	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1427	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1428
		1429	REQ_SEND;
		1430	}
		1431
		1432	void
		1433	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1434	PPCODE:
		1435	{
		1436	dREQ;
		1437
		1438	req->type = EIO_READDIR;
		1439	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1440
		1441	if (flags & EIO_READDIR_DENTS)
		1442	req->int1 |= EIO_READDIR_CUSTOM2;
		1443
		1444	req_set_path1 (req, pathname);
		1445
		1446	REQ_SEND;
		1447	}
		1448
		1449	void
		1450	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1451	PPCODE:
		1452	{
		1453	dREQ;
		1454
		1455	req->type = EIO_MKDIR;
		1456	req->int2 = mode;
		1457	req_set_path1 (req, pathname);
		1458
		1459	REQ_SEND;
		1460	}
		1461
		1462	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1463	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1464	ALIAS:
1302	aio_unlink = REQ_UNLINK	1465	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1466	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1467	aio_readdir = EIO_READDIR
1305	PPCODE:	1468	PPCODE:
1306	{	1469	{
1307	dREQ;	1470	dREQ;
1308		1471
1309	req->type = ix;	1472	req->type = ix;
1310	req->data = newSVsv (pathname);	1473	req_set_path1 (req, pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1474
1312
1313	REQ_SEND;	1475	REQ_SEND;
1314	}	1476	}
1315		1477
1316	void	1478	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1479	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1480	ALIAS:
1322	aio_link = REQ_LINK	1481	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1482	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1483	aio_rename = EIO_RENAME
1325	PPCODE:	1484	PPCODE:
1326	{	1485	{
		1486	eio_wd wd2 = 0;
1327	dREQ;	1487	dREQ;
1328		1488
1329	req->type = ix;	1489	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1490	req_set_path1 (req, oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1491	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1332	req->data = newSVsv (newpath);	1492	req->int3 = (long)wd2;
1333	req->dataptr = SvPVbyte_nolen (req->data);
1334		1493
1335	REQ_SEND;	1494	REQ_SEND;
1336	}	1495	}
1337		1496
1338	void	1497	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1498	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1499	PPCODE:
1343	{	1500	{
1344	dREQ;	1501	dREQ;
1345		1502
1346	req->type = REQ_BUSY;	1503	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1504	req->int2 = (mode_t)mode;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1505	req->offs = dev;
1349		1506	req_set_path1 (req, pathname);
		1507
1350	REQ_SEND;	1508	REQ_SEND;
1351	}	1509	}
1352		1510
1353	void	1511	void
1354	aio_group (callback=&PL_sv_undef)	1512	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1355	SV * callback	1513	ALIAS:
1356	PROTOTYPE: ;$	1514	aio_mtouch = EIO_MTOUCH
		1515	aio_msync = EIO_MSYNC
1357	PPCODE:	1516	PPCODE:
1358	{	1517	{
		1518	STRLEN svlen;
		1519	char *svptr = SvPVbyte (data, svlen);
		1520	UV len = SvUV (length);
		1521
		1522	if (offset < 0)
		1523	offset += svlen;
		1524
		1525	if (offset < 0 || offset > svlen)
		1526	croak ("offset outside of scalar");
		1527
		1528	if (!SvOK (length) || len + offset > svlen)
		1529	len = svlen - offset;
		1530
		1531	{
		1532	dREQ;
		1533
		1534	req->type = ix;
		1535	req->sv2 = SvREFCNT_inc (data);
		1536	req->ptr2 = (char *)svptr + offset;
		1537	req->size = len;
		1538	req->int1 = flags;
		1539
		1540	REQ_SEND;
		1541	}
		1542	}
		1543
		1544	void
		1545	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1546	PPCODE:
		1547	{
		1548	STRLEN svlen;
		1549	char *svptr = SvPVbyte (data, svlen);
		1550	UV len = SvUV (length);
		1551
		1552	if (offset < 0)
		1553	offset += svlen;
		1554
		1555	if (offset < 0 || offset > svlen)
		1556	croak ("offset outside of scalar");
		1557
		1558	if (!SvOK (length) || len + offset > svlen)
		1559	len = svlen - offset;
		1560
		1561	{
		1562	dREQ;
		1563
		1564	req->type = EIO_MLOCK;
		1565	req->sv2 = SvREFCNT_inc (data);
		1566	req->ptr2 = (char *)svptr + offset;
		1567	req->size = len;
		1568
		1569	REQ_SEND;
		1570	}
		1571	}
		1572
		1573	void
		1574	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1575	PPCODE:
		1576	{
		1577	dREQ;
		1578
		1579	req->type = EIO_MLOCKALL;
		1580	req->int1 = flags;
		1581
		1582	REQ_SEND;
		1583	}
		1584
		1585	void
		1586	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1587	PPCODE:
		1588	{
		1589	int fd = s_fileno_croak (fh, 0);
1359	dREQ;	1590	dREQ;
1360		1591
1361	req->type = REQ_GROUP;	1592	req->type = EIO_CUSTOM;
1362	req_send (req);	1593	req->sv1 = newSVsv (fh);
		1594	req->int1 = fd;
1363		1595
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1596	req->feed = fiemap;
1365	}	1597	#if HAVE_FIEMAP
		1598	/* keep our fingers crossed that the next two types are 64 bit */
		1599	req->offs = start;
		1600	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1601	req->int2 = flags;
		1602	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1603	#endif
1366		1604
		1605	REQ_SEND;
		1606	}
		1607
1367	void	1608	void
1368	aio_nop (callback=&PL_sv_undef)	1609	aio_busy (double delay, SV *callback = &PL_sv_undef)
1369	SV * callback
1370	PPCODE:	1610	PPCODE:
1371	{	1611	{
1372	dREQ;	1612	dREQ;
1373		1613
1374	req->type = REQ_NOP;	1614	req->type = EIO_BUSY;
		1615	req->nv1 = delay < 0. ? 0. : delay;
1375		1616
1376	REQ_SEND;	1617	REQ_SEND;
1377	}	1618	}
1378		1619
1379	void	1620	void
1380	aioreq_pri (int pri = DEFAULT_PRI)	1621	aio_group (SV *callback = &PL_sv_undef)
1381	CODE:	1622	PPCODE:
		1623	{
		1624	dREQ;
		1625
		1626	req->type = EIO_GROUP;
		1627
		1628	PUTBACK;
		1629	req_submit (req);
		1630	SPAGAIN;
		1631
		1632	XPUSHs (req_sv (req, aio_grp_stash));
		1633	}
		1634
		1635	void
		1636	aio_nop (SV *callback = &PL_sv_undef)
		1637	ALIAS:
		1638	aio_nop = EIO_NOP
		1639	aio_sync = EIO_SYNC
		1640	PPCODE:
		1641	{
		1642	dREQ;
		1643
		1644	req->type = ix;
		1645
		1646	REQ_SEND;
		1647	}
		1648
		1649	int
		1650	aioreq_pri (int pri = NO_INIT)
		1651	CODE:
		1652	RETVAL = next_pri;
		1653	if (items > 0)
		1654	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1655	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1656	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1657	next_pri = pri;
		1658	}
		1659	OUTPUT:
		1660	RETVAL
1385		1661
1386	void	1662	void
1387	aioreq_nice (int nice = 0)	1663	aioreq_nice (int nice = 0)
1388	CODE:	1664	CODE:
1389	nice = next_pri - nice;	1665	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1666	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1667	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1668	next_pri = nice;
1393		1669
1394	void	1670	void
1395	flush ()	1671	flush ()
1396	PROTOTYPE:
1397	CODE:	1672	CODE:
1398	while (nreqs)	1673	while (eio_nreqs ())
1399	{	1674	{
1400	poll_wait ();	1675	poll_wait ();
1401	poll_cb ();	1676	poll_cb ();
1402	}	1677	}
1403		1678
1404	void	1679	int
1405	poll()	1680	poll ()
1406	PROTOTYPE:
1407	CODE:	1681	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1682	poll_wait ();
1411	poll_cb ();	1683	RETVAL = poll_cb ();
1412	}
1413
1414	int
1415	poll_fileno()
1416	PROTOTYPE:
1417	CODE:
1418	RETVAL = respipe [0];
1419	OUTPUT:	1684	OUTPUT:
1420	RETVAL	1685	RETVAL
1421		1686
1422	int	1687	int
		1688	poll_fileno ()
		1689	CODE:
		1690	RETVAL = s_epipe_fd (&respipe);
		1691	OUTPUT:
		1692	RETVAL
		1693
		1694	int
1423	poll_cb(...)	1695	poll_cb (...)
1424	PROTOTYPE:	1696	PROTOTYPE:
1425	CODE:	1697	CODE:
1426	RETVAL = poll_cb ();	1698	RETVAL = poll_cb ();
1427	OUTPUT:	1699	OUTPUT:
1428	RETVAL	1700	RETVAL
1429		1701
1430	void	1702	void
1431	poll_wait()	1703	poll_wait ()
1432	PROTOTYPE:
1433	CODE:	1704	CODE:
1434	if (nreqs)
1435	poll_wait ();	1705	poll_wait ();
1436		1706
1437	int	1707	int
1438	nreqs()	1708	nreqs ()
1439	PROTOTYPE:
1440	CODE:	1709	CODE:
1441	RETVAL = nreqs;	1710	RETVAL = eio_nreqs ();
1442	OUTPUT:	1711	OUTPUT:
1443	RETVAL	1712	RETVAL
1444		1713
		1714	int
		1715	nready ()
		1716	CODE:
		1717	RETVAL = eio_nready ();
		1718	OUTPUT:
		1719	RETVAL
		1720
		1721	int
		1722	npending ()
		1723	CODE:
		1724	RETVAL = eio_npending ();
		1725	OUTPUT:
		1726	RETVAL
		1727
		1728	int
		1729	nthreads ()
		1730	CODE:
		1731	RETVAL = eio_nthreads ();
		1732	OUTPUT:
		1733	RETVAL
		1734
		1735	int
		1736	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1737	CODE:
		1738	RETVAL = posix_fadvise (fh, offset, length, advice);
		1739	OUTPUT:
		1740	RETVAL
		1741
		1742	IV
		1743	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1744	CODE:
		1745	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1746	OUTPUT:
		1747	RETVAL
		1748
		1749	void
		1750	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1751	PPCODE:
		1752	sv_unmagic (scalar, MMAP_MAGIC);
		1753	{
		1754	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1755	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1756	if (addr == (void *)-1)
		1757	XSRETURN_NO;
		1758
		1759	sv_force_normal (scalar);
		1760
		1761	/* we store the length in mg_obj, as namlen is I32 :/ */
		1762	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1763	->mg_obj = (SV *)length;
		1764
		1765	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1766
		1767	if (!(prot & PROT_WRITE))
		1768	SvREADONLY_on (scalar);
		1769
		1770	if (SvLEN (scalar))
		1771	Safefree (SvPVX (scalar));
		1772
		1773	SvPVX (scalar) = (char *)addr;
		1774	SvCUR_set (scalar, length);
		1775	SvLEN_set (scalar, 0);
		1776	SvPOK_only (scalar);
		1777
		1778	XSRETURN_YES;
		1779	}
		1780
		1781	void
		1782	munmap (SV *scalar)
		1783	CODE:
		1784	sv_unmagic (scalar, MMAP_MAGIC);
		1785
		1786	int
		1787	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1788	ALIAS:
		1789	mprotect = 1
		1790	CODE:
		1791	{
		1792	STRLEN svlen;
		1793	void *addr = SvPVbyte (scalar, svlen);
		1794	STRLEN len = SvUV (length);
		1795
		1796	if (offset < 0)
		1797	offset += svlen;
		1798
		1799	if (offset < 0 || offset > svlen)
		1800	croak ("offset outside of scalar");
		1801
		1802	if (!SvOK (length) || len + offset > svlen)
		1803	len = svlen - offset;
		1804
		1805	addr = (void *)(((intptr_t)addr) + offset);
		1806	eio_page_align (&addr, &len);
		1807
		1808	switch (ix)
		1809	{
		1810	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1811	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1812	}
		1813	}
		1814	OUTPUT:
		1815	RETVAL
		1816
		1817	int
		1818	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1819	CODE:
		1820	{
		1821	STRLEN svlen;
		1822	void *addr = SvPVbyte (scalar, svlen);
		1823	size_t len = SvUV (length);
		1824
		1825	if (offset < 0)
		1826	offset += svlen;
		1827
		1828	if (offset < 0 || offset > svlen)
		1829	croak ("offset outside of scalar");
		1830
		1831	if (!SvOK (length) || len + offset > svlen)
		1832	len = svlen - offset;
		1833
		1834	addr = (void *)(((intptr_t)addr) + offset);
		1835	eio_page_align (&addr, &len);
		1836	#if _POSIX_MEMLOCK_RANGE
		1837	RETVAL = munlock (addr, len);
		1838	#else
		1839	RETVAL = EIO_ENOSYS ();
		1840	#endif
		1841	}
		1842	OUTPUT:
		1843	RETVAL
		1844
		1845	int
		1846	munlockall ()
		1847	CODE:
		1848	#if _POSIX_MEMLOCK
		1849	munlockall ();
		1850	#else
		1851	RETVAL = EIO_ENOSYS ();
		1852	#endif
		1853	OUTPUT:
		1854	RETVAL
		1855
		1856	int
		1857	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1858	CODE:
		1859	{
		1860	#if HAVE_LINUX_SPLICE
		1861	loff_t off_in_, off_out_;
		1862	RETVAL = splice (
		1863	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1864	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1865	length, flags
		1866	);
		1867	#else
		1868	RETVAL = EIO_ENOSYS ();
		1869	#endif
		1870	}
		1871	OUTPUT:
		1872	RETVAL
		1873
		1874	int
		1875	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1876	CODE:
		1877	#if HAVE_LINUX_SPLICE
		1878	RETVAL = tee (rfh, wfh, length, flags);
		1879	#else
		1880	RETVAL = EIO_ENOSYS ();
		1881	#endif
		1882	OUTPUT:
		1883	RETVAL
		1884
		1885	int
		1886	pipesize (aio_rfd rfh, int new_size = -1)
		1887	PROTOTYPE: $;$
		1888	CODE:
		1889	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1890	if (new_size >= 0)
		1891	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1892	else
		1893	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1894	#else
		1895	errno = ENOSYS;
		1896	RETVAL = -1;
		1897	#endif
		1898	OUTPUT:
		1899	RETVAL
		1900
		1901	void
		1902	pipe2 (int flags = 0)
		1903	PROTOTYPE: ;$
		1904	PPCODE:
		1905	{
		1906	int fd[2];
		1907	int res;
		1908
		1909	if (flags)
		1910	#if HAVE_PIPE2
		1911	res = pipe2 (fd, flags);
		1912	#else
		1913	res = (errno = ENOSYS, -1);
		1914	#endif
		1915	else
		1916	res = pipe (fd);
		1917
		1918	if (!res)
		1919	{
		1920	EXTEND (SP, 2);
		1921	PUSHs (newmortalFH (fd[0], O_RDONLY));
		1922	PUSHs (newmortalFH (fd[1], O_WRONLY));
		1923	}
		1924	}
		1925
		1926	void _on_next_submit (SV *cb)
		1927	CODE:
		1928	SvREFCNT_dec (on_next_submit);
		1929	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1930
1445	PROTOTYPES: DISABLE	1931	PROTOTYPES: DISABLE
		1932
		1933	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1934
		1935	BOOT:
		1936	{
		1937	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1938	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1939	}
		1940
		1941	void
		1942	DESTROY (SV *self)
		1943	CODE:
		1944	{
		1945	aio_wd wd = SvAIO_WD (self);
		1946	#if HAVE_AT
		1947	{
		1948	SV *callback = &PL_sv_undef;
		1949	dREQ; /* clobbers next_pri :/ */
		1950	next_pri = req->pri; /* restore next_pri */
		1951	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1952	req->type = EIO_WD_CLOSE;
		1953	req->wd = wd;
		1954	REQ_SEND;
		1955	}
		1956	#else
		1957	eio_wd_close_sync (wd);
		1958	#endif
		1959	}
1446		1960
1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1961	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1448		1962
1449	void	1963	void
1450	cancel (aio_req_ornot req)	1964	cancel (aio_req_ornot req)
1451	CODE:	1965	CODE:
1452	req_cancel (req);	1966	eio_cancel (req);
1453		1967
1454	void	1968	void
1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1969	cb (aio_req_ornot req, SV *callback = NO_INIT)
1456	CODE:	1970	PPCODE:
		1971	{
		1972	if (GIMME_V != G_VOID)
		1973	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1974
		1975	if (items > 1)
		1976	{
		1977	SV *cb_cv = get_cb (callback);
		1978
1457	SvREFCNT_dec (req->callback);	1979	SvREFCNT_dec (req->callback);
1458	req->callback = newSVsv (callback);	1980	req->callback = SvREFCNT_inc (cb_cv);
		1981	}
		1982	}
1459		1983
1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1984	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1461		1985
1462	void	1986	void
1463	add (aio_req grp, ...)	1987	add (aio_req grp, ...)
1464	PPCODE:	1988	PPCODE:
1465	{	1989	{
1466	int i;	1990	int i;
1467	aio_req req;
1468		1991
1469	if (grp->fd == 2)	1992	if (grp->int1 == 2)
1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1993	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1471		1994
1472	for (i = 1; i < items; ++i )	1995	for (i = 1; i < items; ++i )
1473	{	1996	{
		1997	aio_req req;
		1998
1474	if (GIMME_V != G_VOID)	1999	if (GIMME_V != G_VOID)
1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2000	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1476		2001
1477	req = SvAIO_REQ (ST (i));	2002	req = SvAIO_REQ (ST (i));
1478		2003
1479	if (req)	2004	if (req)
1480	{	2005	eio_grp_add (grp, req);
1481	++grp->length;
1482	req->grp = grp;
1483
1484	req->grp_prev = 0;
1485	req->grp_next = grp->grp_first;
1486
1487	if (grp->grp_first)
1488	grp->grp_first->grp_prev = req;
1489
1490	grp->grp_first = req;
1491	}
1492	}	2006	}
1493	}	2007	}
1494		2008
1495	void	2009	void
1496	cancel_subs (aio_req_ornot req)	2010	cancel_subs (aio_req_ornot req)
…		…
1500	void	2014	void
1501	result (aio_req grp, ...)	2015	result (aio_req grp, ...)
1502	CODE:	2016	CODE:
1503	{	2017	{
1504	int i;	2018	int i;
		2019	AV *av;
		2020
		2021	grp->errorno = errno;
		2022
1505	AV *av = newAV ();	2023	av = newAV ();
		2024	av_extend (av, items - 1);
1506		2025
1507	for (i = 1; i < items; ++i )	2026	for (i = 1; i < items; ++i )
1508	av_push (av, newSVsv (ST (i)));	2027	av_push (av, newSVsv (ST (i)));
1509		2028
1510	SvREFCNT_dec (grp->data);	2029	SvREFCNT_dec (grp->sv1);
1511	grp->data = (SV *)av;	2030	grp->sv1 = (SV *)av;
1512	}	2031	}
		2032
		2033	void
		2034	errno (aio_req grp, int errorno = errno)
		2035	CODE:
		2036	grp->errorno = errorno;
1513		2037
1514	void	2038	void
1515	limit (aio_req grp, int limit)	2039	limit (aio_req grp, int limit)
1516	CODE:	2040	CODE:
1517	grp->fd2 = limit;	2041	eio_grp_limit (grp, limit);
1518	aio_grp_feed (grp);
1519		2042
1520	void	2043	void
1521	feed (aio_req grp, SV *callback=&PL_sv_undef)	2044	feed (aio_req grp, SV *callback = &PL_sv_undef)
1522	CODE:	2045	CODE:
1523	{	2046	{
1524	SvREFCNT_dec (grp->fh2);	2047	SvREFCNT_dec (grp->sv2);
1525	grp->fh2 = newSVsv (callback);	2048	grp->sv2 = newSVsv (callback);
		2049	grp->feed = aio_grp_feed;
1526		2050
1527	if (grp->fd2 <= 0)	2051	if (grp->int2 <= 0)
1528	grp->fd2 = 2;	2052	grp->int2 = 2;
1529		2053
1530	aio_grp_feed (grp);	2054	eio_grp_limit (grp, grp->int2);
1531	}	2055	}
1532		2056

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