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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.78 by root, Thu Oct 26 14:35:34 2006 UTC vs.
Revision 1.234 by root, Thu Jun 25 15:20:11 2015 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>
36	# elif __freebsd
37	# include <sys/socket.h>
38	# include <sys/uio.h>	21	# include <sys/mman.h>
39	# 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
40	# include <sys/socket.h>	85	#include <sys/time.h>
41	# elif __solaris /* not yet */
42	# 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
43	# else	144	# else
44	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	146	# endif
46	#endif	147	#endif
47		148
48	/* used for struct dirent, AIX doesn't provide it */	149	/* defines all sorts of constants to 0 unless they are already defined */
49	#ifndef NAME_MAX	150	#include "def0.h"
50	# define NAME_MAX 4096
51	#endif
52		151
53	#ifndef PTHREAD_STACK_MIN	152	#ifndef makedev
54	/* care for broken platforms, e.g. windows */	153	# define makedev(maj,min) (((maj) << 8) | (min))
55	# define PTHREAD_STACK_MIN 16384
56	#endif	154	#endif
57		155	#ifndef major
58	#if __ia64	156	# define major(dev) ((dev) >> 8)
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif	157	#endif
		158	#ifndef minor
		159	# define minor(dev) ((dev) & 0xff)
		160	#endif
65		161
66	/* buffer size for various temporary buffers */	162	#if PAGESIZE <= 0
67	#define AIO_BUFSIZE 65536	163	# define PAGESIZE sysconf (_SC_PAGESIZE)
		164	#endif
68		165
69	#define dBUF \	166	/*****************************************************************************/
70	char *aio_buf; \	167
71	LOCK (wrklock); \	168	static void
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	169	fiemap (eio_req *req)
73	UNLOCK (wrklock); \	170	{
74	if (!aio_buf) \	171	req->result = -1;
		172
		173	#if HAVE_FIEMAP
		174	/* assume some c99 */
		175	struct fiemap *fiemap = 0;
		176	size_t end_offset;
		177	int count = req->int3;
		178
		179	req->flags |= EIO_FLAG_PTR1_FREE;
		180
		181	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		182	/* increase in 3.5kb steps */
		183	if (count < 0)
		184	count = 8;
		185
		186	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		187	errno = ENOMEM;
		188	if (!fiemap)
75	return -1;	189	return;
76		190
77	enum {	191	req->ptr1 = fiemap;
78	REQ_QUIT,
79	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
81	REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85	REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,
87	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,
89	};
90		192
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	193	fiemap->fm_start = req->offs;
92	#define AIO_GRP_KLASS "IO::AIO::GRP"	194	fiemap->fm_length = req->size;
		195	fiemap->fm_flags = req->int2;
		196	fiemap->fm_extent_count = count;
93		197
94	typedef struct aio_cb	198	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
95	{	199	return;
96	struct aio_cb *volatile next;
97		200
98	SV *data, *callback;	201	if (req->int3 >= 0 /* not autosizing */
99	SV *fh, *fh2;	202	|| !fiemap->fm_mapped_extents /* no more extents */
100	void *dataptr, *data2ptr;	203	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
101	Stat_t *statdata;	204	goto done;
102	off_t offset;
103	size_t length;
104	ssize_t result;
105		205
106	STRLEN dataoffset;	206	/* else we have to loop -
107	int type;	207	* it would be tempting (actually I tried that first) to just query the
108	int fd, fd2;	208	* number of extents needed, but linux often feels like not returning all
109	int errorno;	209	* extents, without telling us it left any out. this complicates
110	mode_t mode; /* open */	210	* this quite a bit.
		211	*/
111		212
112	unsigned char flags;	213	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
113	unsigned char pri;
114		214
115	SV *self; /* the perl counterpart of this request, if any */	215	for (;;)
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
117	} aio_cb;
118
119	enum {
120	FLAG_CANCELLED = 0x01,
121	};
122
123	typedef aio_cb *aio_req;
124	typedef aio_cb *aio_req_ornot;
125
126	enum {
127	PRI_MIN = -4,
128	PRI_MAX = 4,
129
130	DEFAULT_PRI = 0,
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
136
137	static unsigned int started, wanted;
138	static volatile unsigned int nreqs;
139	static volatile unsigned int max_outstanding = 0xffffffff;
140	static int respipe [2];
141
142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
144	#else
145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
146	#endif
147
148	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
149	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
150
151	/* worker threads management */
152	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
153
154	typedef struct worker {
155	/* locked by wrklock */
156	struct worker *prev, *next;
157
158	pthread_t tid;
159
160	/* locked by reslock, reqlock or wrklock */
161	aio_req req; /* currently processed request */
162	void *dbuf;
163	DIR *dirp;
164	} worker;
165
166	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
167
168	static void worker_clear (worker *wrk)
169	{
170	if (wrk->dirp)
171	{	216	{
172	closedir (wrk->dirp);	217	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
173	wrk->dirp = 0;	218	char scratch[3072];
174	}	219	struct fiemap *incmap = (struct fiemap *)scratch;
175		220
176	if (wrk->dbuf)	221	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
177	{	222	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
178	free (wrk->dbuf);	223	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
179	wrk->dbuf = 0;	224	incmap->fm_flags = fiemap->fm_flags;
180	}	225	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
181	}
182		226
183	static void worker_free (worker *wrk)	227	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
184	{
185	wrk->next->prev = wrk->prev;
186	wrk->prev->next = wrk->next;
187
188	free (wrk);
189	}
190
191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
194
195	/*
196	* a somewhat faster data structure might be nice, but
197	* with 8 priorities this actually needs <20 insns
198	* per shift, the most expensive operation.
199	*/
200	typedef struct {
201	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
202	int size;
203	} reqq;
204
205	static reqq req_queue;
206	static reqq res_queue;
207
208	int reqq_push (reqq *q, aio_req req)
209	{
210	int pri = req->pri;
211	req->next = 0;
212
213	if (q->qe[pri])
214	{
215	q->qe[pri]->next = req;
216	q->qe[pri] = req;
217	}
218	else
219	q->qe[pri] = q->qs[pri] = req;
220
221	return q->size++;
222	}
223
224	aio_req reqq_shift (reqq *q)
225	{
226	int pri;
227
228	if (!q->size)
229	return 0;	228	return;
230		229
231	--q->size;	230	if (!incmap->fm_mapped_extents)
		231	goto done;
232		232
233	for (pri = NUM_PRI; pri--; )	233	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
234	{	234	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
235	aio_req req = q->qs[pri];	235	errno = ENOMEM;
236
237	if (req)	236	if (!fiemap)
		237	return;
		238
		239	req->ptr1 = fiemap;
		240
		241	for (count = 0; count < incmap->fm_mapped_extents; ++count)
238	{	242	{
239	if (!(q->qs[pri] = req->next))	243	struct fiemap_extent *e = incmap->fm_extents + count;
240	q->qe[pri] = 0;
241		244
242	return req;	245	if (e->fe_logical + e->fe_length >= end_offset)
		246	goto done;
		247
		248	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		249
		250	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		251	goto done;
		252
243	}	253	}
244	}	254	}
245		255
246	abort ();	256	done:
247	}	257	req->result = 0;
248		258
249	static int poll_cb (int max);	259	#else
250	static void req_invoke (aio_req req);	260	errno = ENOSYS;
		261	#endif
		262	}
		263
		264	/*****************************************************************************/
		265
		266	enum {
		267	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		268	};
		269
		270	typedef eio_req *aio_req;
		271	typedef eio_req *aio_req_ornot;
		272	typedef eio_wd aio_wd;
		273
		274	static SV *on_next_submit;
		275	static int next_pri = EIO_PRI_DEFAULT;
		276	static int max_outstanding;
		277
		278	static s_epipe respipe;
		279
251	static void req_free (aio_req req);	280	static void req_destroy (aio_req req);
252	static void req_cancel (aio_req req);	281	static void req_cancel (aio_req req);
253		282
		283	static void
		284	want_poll (void)
		285	{
		286	/* write a dummy byte to the pipe so fh becomes ready */
		287	s_epipe_signal (&respipe);
		288	}
		289
		290	static void
		291	done_poll (void)
		292	{
		293	/* read any signals sent by the worker threads */
		294	s_epipe_drain (&respipe);
		295	}
		296
254	/* must be called at most once */	297	/* must be called at most once */
255	static SV *req_sv (aio_req req, const char *klass)	298	static SV *
		299	req_sv (aio_req req, HV *stash)
256	{	300	{
257	if (!req->self)	301	if (!req->self)
258	{	302	{
259	req->self = (SV *)newHV ();	303	req->self = (SV *)newHV ();
260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
261	}	305	}
262		306
263	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	307	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
264	}	308	}
265		309
266	static aio_req SvAIO_REQ (SV *sv)	310	static SV *
		311	newSVaio_wd (aio_wd wd)
		312	{
		313	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		314	}
		315
		316	static aio_req
		317	SvAIO_REQ (SV *sv)
267	{	318	{
268	MAGIC *mg;	319	MAGIC *mg;
269		320
270	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	321	if (!SvROK (sv)
		322	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		323	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		324	&& SvSTASH (SvRV (sv)) != aio_req_stash
		325	&& !sv_derived_from (sv, "IO::AIO::REQ")))
271	croak ("object of class " AIO_REQ_KLASS " expected");	326	croak ("object of class IO::AIO::REQ expected");
272		327
273	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	328	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
274		329
275	return mg ? (aio_req)mg->mg_ptr : 0;	330	return mg ? (aio_req)mg->mg_ptr : 0;
276	}	331	}
277		332
		333	static aio_wd
		334	SvAIO_WD (SV *sv)
		335	{
		336	if (!SvROK (sv)
		337	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		338	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		339	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		340
		341	return (aio_wd)(long)SvIVX (SvRV (sv));
		342	}
		343
		344	static SV *
		345	newmortalFH (int fd, int flags)
		346	{
		347	if (fd < 0)
		348	return &PL_sv_undef;
		349
		350	GV *gv = (GV *)sv_newmortal ();
		351	char sym[64];
		352	int symlen;
		353
		354	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		355	gv_init (gv, aio_stash, sym, symlen, 0);
		356
		357	symlen = snprintf (
		358	sym,
		359	sizeof (sym),
		360	"%s&=%d",
		361	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		362	fd
		363	);
		364
		365	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		366	? (SV *)gv : &PL_sv_undef;
		367	}
		368
		369	static void
278	static void aio_grp_feed (aio_req grp)	370	aio_grp_feed (aio_req grp)
279	{	371	{
280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	372	if (grp->sv2 && SvOK (grp->sv2))
281	{	373	{
282	int old_len = grp->length;
283
284	if (grp->fh2 && SvOK (grp->fh2))
285	{
286	dSP;	374	dSP;
287		375
288	ENTER;	376	ENTER;
289	SAVETMPS;	377	SAVETMPS;
290	PUSHMARK (SP);	378	PUSHMARK (SP);
291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	379	XPUSHs (req_sv (grp, aio_grp_stash));
292	PUTBACK;	380	PUTBACK;
293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	381	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
294	SPAGAIN;	382	SPAGAIN;
295	FREETMPS;	383	FREETMPS;
296	LEAVE;	384	LEAVE;
297	}
298
299	/* stop if no progress has been made */
300	if (old_len == grp->length)
301	{
302	SvREFCNT_dec (grp->fh2);
303	grp->fh2 = 0;
304	break;
305	}
306	}	385	}
307	}	386	}
308		387
309	static void aio_grp_dec (aio_req grp)	388	static void
		389	req_submit (eio_req *req)
310	{	390	{
311	--grp->length;	391	eio_submit (req);
312		392
313	/* call feeder, if applicable */	393	if (expect_false (on_next_submit))
314	aio_grp_feed (grp);
315
316	/* finish, if done */
317	if (!grp->length && grp->fd)
318	{	394	{
319	req_invoke (grp);	395	dSP;
320	req_free (grp);	396	SV *cb = sv_2mortal (on_next_submit);
		397
		398	on_next_submit = 0;
		399
		400	PUSHMARK (SP);
		401	PUTBACK;
		402	call_sv (cb, G_DISCARD | G_EVAL);
321	}	403	}
322	}	404	}
323		405
324	static void poll_wait ()	406	static int
		407	req_invoke (eio_req *req)
325	{	408	{
326	fd_set rfd;	409	if (req->flags & FLAG_SV2_RO_OFF)
		410	SvREADONLY_off (req->sv2);
327		411
328	while (nreqs)	412	if (!EIO_CANCELLED (req) && req->callback)
329	{	413	{
330	int size;
331	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
332	LOCK (reslock);
333	#endif
334	size = res_queue.size;
335	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
336	UNLOCK (reslock);
337	#endif
338
339	if (size)
340	return;
341
342	FD_ZERO(&rfd);
343	FD_SET(respipe [0], &rfd);
344
345	select (respipe [0] + 1, &rfd, 0, 0, 0);
346	}
347	}
348
349	static void req_invoke (aio_req req)
350	{
351	dSP;	414	dSP;
352		415	static SV *sv_result_cache; /* caches the result integer SV */
353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	416	SV *sv_result;
354	{
355	errno = req->errorno;
356		417
357	ENTER;	418	ENTER;
358	SAVETMPS;	419	SAVETMPS;
359	PUSHMARK (SP);	420	PUSHMARK (SP);
360	EXTEND (SP, 1);	421	EXTEND (SP, 1);
361		422
		423	/* do not recreate the result IV from scratch each time */
		424	if (expect_true (sv_result_cache))
		425	{
		426	sv_result = sv_result_cache; sv_result_cache = 0;
		427	SvIV_set (sv_result, req->result);
		428	SvIOK_only (sv_result);
		429	}
		430	else
		431	{
		432	sv_result = newSViv (req->result);
		433	SvREADONLY_on (sv_result);
		434	}
		435
362	switch (req->type)	436	switch (req->type)
363	{	437	{
		438	case EIO_WD_OPEN:
		439	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		440	break;
		441
364	case REQ_READDIR:	442	case EIO_READDIR:
365	{	443	{
366	SV *rv = &PL_sv_undef;	444	SV *rv = &PL_sv_undef;
367		445
368	if (req->result >= 0)	446	if (req->result >= 0)
369	{	447	{
370	int i;	448	int i;
371	char *buf = req->data2ptr;	449	char *names = (char *)req->ptr2;
		450	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
372	AV *av = newAV ();	451	AV *av = newAV ();
373		452
374	av_extend (av, req->result - 1);	453	av_extend (av, req->result - 1);
375		454
376	for (i = 0; i < req->result; ++i)	455	for (i = 0; i < req->result; ++i)
377	{	456	{
378	SV *sv = newSVpv (buf, 0);	457	if (req->int1 & EIO_READDIR_DENTS)
		458	{
		459	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
379		460
		461	if (req->int1 & EIO_READDIR_CUSTOM2)
		462	{
		463	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		464	AV *avent = newAV ();
		465
		466	av_extend (avent, 2);
		467
		468	if (!sv_type [ent->type])
		469	{
		470	sv_type [ent->type] = newSViv (ent->type);
		471	SvREADONLY_on (sv_type [ent->type]);
		472	}
		473
		474	av_store (avent, 0, namesv);
		475	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		476	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		477
		478	av_store (av, i, newRV_noinc ((SV *)avent));
		479	}
		480	else
380	av_store (av, i, sv);	481	av_store (av, i, namesv);
		482
		483	++ent;
		484	}
		485	else
		486	{
		487	SV *name = newSVpv (names, 0);
		488	av_store (av, i, name);
381	buf += SvCUR (sv) + 1;	489	names += SvCUR (name) + 1;
		490	}
382	}	491	}
383		492
384	rv = sv_2mortal (newRV_noinc ((SV *)av));	493	rv = sv_2mortal (newRV_noinc ((SV *)av));
385	}	494	}
386		495
387	PUSHs (rv);	496	PUSHs (rv);
		497
		498	if (req->int1 & EIO_READDIR_CUSTOM1)
		499	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
388	}	500	}
389	break;	501	break;
390		502
391	case REQ_OPEN:	503	case EIO_OPEN:
		504	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		505	break;
		506
		507	case EIO_STATVFS:
		508	case EIO_FSTATVFS:
392	{	509	{
393	/* convert fd to fh */	510	SV *rv = &PL_sv_undef;
394	SV *fh;	511
		512	#ifndef _WIN32
		513	if (req->result >= 0)
		514	{
		515	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		516	HV *hv = newHV ();
		517	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		518	* chooses to make it a struct.
		519	*/
		520	unsigned long fsid = 0;
		521	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
395		522
396	PUSHs (sv_2mortal (newSViv (req->result)));	523	rv = sv_2mortal (newRV_noinc ((SV *)hv));
397	PUTBACK;
398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
399	SPAGAIN;
400		524
401	fh = SvREFCNT_inc (POPs);	525	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		526	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		527	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		528	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		529	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		530	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		531	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		532	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		533	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		534	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		535	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		536	}
		537	#endif
402		538
403	PUSHMARK (SP);	539	PUSHs (rv);
404	XPUSHs (sv_2mortal (fh));
405	}	540	}
		541
406	break;	542	break;
407		543
408	case REQ_GROUP:	544	case EIO_GROUP:
409	req->fd = 2; /* mark group as finished */	545	req->int1 = 2; /* mark group as finished */
410		546
411	if (req->data)	547	if (req->sv1)
412	{	548	{
413	int i;	549	int i;
414	AV *av = (AV *)req->data;	550	AV *av = (AV *)req->sv1;
415		551
416	EXTEND (SP, AvFILL (av) + 1);	552	EXTEND (SP, AvFILL (av) + 1);
417	for (i = 0; i <= AvFILL (av); ++i)	553	for (i = 0; i <= AvFILL (av); ++i)
418	PUSHs (*av_fetch (av, i, 0));	554	PUSHs (*av_fetch (av, i, 0));
419	}	555	}
420	break;	556	break;
421		557
422	case REQ_NOP:	558	case EIO_NOP:
423	case REQ_BUSY:	559	case EIO_BUSY:
424	break;	560	break;
425		561
		562	case EIO_READLINK:
		563	case EIO_REALPATH:
		564	if (req->result > 0)
		565	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		566	break;
		567
		568	case EIO_STAT:
		569	case EIO_LSTAT:
		570	case EIO_FSTAT:
		571	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		572
		573	if (!(PL_laststatval = req->result))
		574	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		575	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		576
		577	PUSHs (sv_result);
		578	break;
		579
		580	case EIO_SEEK:
		581	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		582	break;
		583
		584	case EIO_READ:
		585	{
		586	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		587	*SvEND (req->sv2) = 0;
		588	SvPOK_only (req->sv2);
		589	SvSETMAGIC (req->sv2);
		590	PUSHs (sv_result);
		591	}
		592	break;
		593
		594	case EIO_CUSTOM:
		595	if (req->feed == fiemap)
		596	{
		597	#if HAVE_FIEMAP
		598	if (!req->result)
		599	{
		600	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		601
		602	if (fiemap->fm_extent_count)
		603	{
		604	AV *av = newAV ();
		605	int i;
		606
		607	while (fiemap->fm_mapped_extents)
		608	{
		609	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		610	AV *ext_av = newAV ();
		611
		612	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		613	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		614	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		615	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		616
		617	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		618	}
		619
		620	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		621	}
		622	else
		623	{
		624	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		625	PUSHs (sv_result);
		626	}
		627	}
		628	#endif
		629	}
		630	else
		631	PUSHs (sv_result);
		632	break;
		633
		634	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		635	if (req->result > 0)
		636	SvIV_set (sv_result, 0);
		637	/* FALLTHROUGH */
		638
426	default:	639	default:
427	PUSHs (sv_2mortal (newSViv (req->result)));	640	PUSHs (sv_result);
428	break;	641	break;
429	}	642	}
430		643
		644	errno = req->errorno;
431		645
432	PUTBACK;	646	PUTBACK;
433	call_sv (req->callback, G_VOID | G_EVAL);	647	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
434	SPAGAIN;	648	SPAGAIN;
		649
		650	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		651	SvREFCNT_dec (sv_result);
		652	else
		653	sv_result_cache = sv_result;
435		654
436	FREETMPS;	655	FREETMPS;
437	LEAVE;	656	LEAVE;
		657
		658	PUTBACK;
438	}	659	}
439		660
440	if (req->grp)	661	return !!SvTRUE (ERRSV);
441	{
442	aio_req grp = req->grp;
443
444	/* unlink request */
445	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
446	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
447
448	if (grp->grp_first == req)
449	grp->grp_first = req->grp_next;
450
451	aio_grp_dec (grp);
452	}
453
454	if (SvTRUE (ERRSV))
455	{
456	req_free (req);
457	croak (0);
458	}
459	}	662	}
460		663
461	static void req_free (aio_req req)	664	static void
		665	req_destroy (aio_req req)
462	{	666	{
463	if (req->self)	667	if (req->self)
464	{	668	{
465	sv_unmagic (req->self, PERL_MAGIC_ext);	669	sv_unmagic (req->self, PERL_MAGIC_ext);
466	SvREFCNT_dec (req->self);	670	SvREFCNT_dec (req->self);
467	}	671	}
468		672
469	SvREFCNT_dec (req->data);
470	SvREFCNT_dec (req->fh);	673	SvREFCNT_dec (req->sv1);
471	SvREFCNT_dec (req->fh2);	674	SvREFCNT_dec (req->sv2);
		675	SvREFCNT_dec (req->sv3);
		676	SvREFCNT_dec (req->sv4);
472	SvREFCNT_dec (req->callback);	677	SvREFCNT_dec (req->callback);
473	Safefree (req->statdata);
474		678
475	if (req->type == REQ_READDIR)
476	free (req->data2ptr);
477
478	Safefree (req);	679	free (req);
479	}	680	}
480		681
		682	static void
481	static void req_cancel_subs (aio_req grp)	683	req_cancel_subs (aio_req grp)
482	{	684	{
483	aio_req sub;
484
485	if (grp->type != REQ_GROUP)	685	if (grp->type != EIO_GROUP)
486	return;	686	return;
487		687
488	SvREFCNT_dec (grp->fh2);	688	SvREFCNT_dec (grp->sv2);
489	grp->fh2 = 0;	689	grp->sv2 = 0;
490		690
491	for (sub = grp->grp_first; sub; sub = sub->grp_next)	691	eio_grp_cancel (grp);
492	req_cancel (sub);
493	}	692	}
494		693
495	static void req_cancel (aio_req req)	694	static void ecb_cold
		695	create_respipe (void)
496	{	696	{
497	req->flags |= FLAG_CANCELLED;	697	if (s_epipe_renew (&respipe))
498		698	croak ("IO::AIO: unable to initialize result pipe");
499	req_cancel_subs (req);
500	}	699	}
501		700
502	static int poll_cb (int max)	701	static void
		702	poll_wait (void)
503	{	703	{
504	dSP;	704	while (eio_nreqs ())
505	int count = 0;	705	{
506	int do_croak = 0;	706	int size;
507	aio_req req;
508		707
		708	X_LOCK (reslock);
		709	size = res_queue.size;
		710	X_UNLOCK (reslock);
		711
		712	if (size)
		713	return;
		714
		715	etp_maybe_start_thread ();
		716
		717	s_epipe_wait (&respipe);
		718	}
		719	}
		720
		721	static int
		722	poll_cb (void)
		723	{
509	for (;;)	724	for (;;)
510	{	725	{
511	while (max <= 0 || count < max)	726	int res = eio_poll ();
		727
		728	if (res > 0)
		729	croak (0);
		730
		731	if (!max_outstanding || max_outstanding > eio_nreqs ())
		732	return res;
		733
		734	poll_wait ();
		735	}
		736	}
		737
		738	static void ecb_cold
		739	reinit (void)
		740	{
		741	create_respipe ();
		742
		743	if (eio_init (want_poll, done_poll) < 0)
		744	croak ("IO::AIO: unable to initialise eio library");
		745	}
		746
		747	/*****************************************************************************/
		748
		749	#if !_POSIX_MAPPED_FILES
		750	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		751	# define munmap(addr,length) EIO_ENOSYS ()
		752	#endif
		753
		754	#if !_POSIX_MEMORY_PROTECTION
		755	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		756	# define PROT_NONE 0
		757	# define PROT_WRITE 0
		758	# define MAP_PRIVATE 0
		759	# define MAP_SHARED 0
		760	# define MAP_FIXED 0
		761	#endif
		762
		763	#define MMAP_MAGIC PERL_MAGIC_ext
		764
		765	static int ecb_cold
		766	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		767	{
		768	int old_errno = errno;
		769	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		770	errno = old_errno;
		771
		772	mg->mg_obj = 0; /* just in case */
		773
		774	SvREADONLY_off (sv);
		775
		776	if (SvPVX (sv) != mg->mg_ptr)
		777	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		778
		779	SvCUR_set (sv, 0);
		780	SvPVX (sv) = 0;
		781	SvOK_off (sv);
		782
		783	return 0;
		784	}
		785
		786	static MGVTBL mmap_vtbl = {
		787	0, 0, 0, 0, mmap_free
		788	};
		789
		790	/*****************************************************************************/
		791
		792	static SV *
		793	get_cb (SV *cb_sv)
		794	{
		795	SvGETMAGIC (cb_sv);
		796	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		797	}
		798
		799	static aio_req ecb_noinline
		800	dreq (SV *callback)
		801	{
		802	SV *cb_cv;
		803	aio_req req;
		804	int req_pri = next_pri;
		805	next_pri = EIO_PRI_DEFAULT;
		806
		807	cb_cv = get_cb (callback);
		808
		809	req = calloc (sizeof (*req), 1);
		810	if (!req)
		811	croak ("out of memory during eio_req allocation");
		812
		813	req->callback = SvREFCNT_inc (cb_cv);
		814	req->pri = req_pri;
		815
		816	return req;
		817	}
		818
		819	#define dREQ \
		820	aio_req req = dreq (callback); \
		821
		822	#define REQ_SEND \
		823	PUTBACK; \
		824	req_submit (req); \
		825	SPAGAIN; \
		826	\
		827	if (GIMME_V != G_VOID) \
		828	XPUSHs (req_sv (req, aio_req_stash));
		829
		830	ecb_inline void
		831	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		832	{
		833	if (expect_false (SvROK (path)))
		834	{
		835	SV *rv = SvRV (path);
		836	SV *wdob;
		837
		838	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
512	{	839	{
513	LOCK (reslock);	840	path = AvARRAY (rv)[1];
514	req = reqq_shift (&res_queue);	841	wdob = AvARRAY (rv)[0];
515		842
516	if (req)	843	if (SvOK (wdob))
517	{	844	{
518	if (!res_queue.size)	845	*wd = SvAIO_WD (wdob);
519	{	846	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
520	/* read any signals sent by the worker threads */
521	char buf [32];
522	while (read (respipe [0], buf, 32) == 32)
523	;
524	}
525	}
526
527	UNLOCK (reslock);
528
529	if (!req)
530	break;
531
532	--nreqs;
533
534	if (req->type == REQ_QUIT)
535	--started;
536	else if (req->type == REQ_GROUP && req->length)
537	{
538	req->fd = 1; /* mark request as delayed */
539	continue;
540	}	847	}
541	else	848	else
542	{	849	*wd = EIO_INVALID_WD;
543	if (req->type == REQ_READ)
544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
545
546	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
547	SvREADONLY_off (req->data);
548
549	if (req->statdata)
550	{
551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
552	PL_laststatval = req->result;
553	PL_statcache = *(req->statdata);
554	}
555
556	req_invoke (req);
557
558	count++;
559	}
560
561	req_free (req);
562	}	850	}
		851	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		852	{
		853	*wd = (aio_wd)(long)SvIVX (rv);
		854	*wdsv = SvREFCNT_inc_NN (rv);
		855	*ptr = ".";
		856	return; /* path set to "." */
		857	}
		858	else
		859	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		860	}
563		861
564	if (nreqs <= max_outstanding)	862	*pathsv = newSVsv (path);
		863	*ptr = SvPVbyte_nolen (*pathsv);
		864	}
		865
		866	static void ecb_noinline
		867	req_set_path1 (aio_req req, SV *path)
		868	{
		869	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		870	}
		871
		872	static void ecb_noinline
		873	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		874	{
		875	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		876
		877	switch (SvTYPE (rv))
		878	{
		879	case SVt_PVIO:
		880	case SVt_PVLV:
		881	case SVt_PVGV:
		882	req->type = type_fh;
		883	req->sv1 = newSVsv (fh_or_path);
		884	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
565	break;	885	break;
566		886
567	poll_wait ();	887	default:
568		888	req->type = type_path;
569	max = 0;	889	req_set_path1 (req, fh_or_path);
		890	break;
570	}	891	}
571
572	return count;
573	}	892	}
574		893
575	static void *aio_proc(void *arg);	894	XS(boot_IO__AIO) ecb_cold;
576		895
577	static void start_thread (void)
578	{
579	sigset_t fullsigset, oldsigset;
580	pthread_attr_t attr;
581
582	worker *wrk = calloc (1, sizeof (worker));
583
584	if (!wrk)
585	croak ("unable to allocate worker thread data");
586
587	pthread_attr_init (&attr);
588	pthread_attr_setstacksize (&attr, STACKSIZE);
589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
590
591	sigfillset (&fullsigset);
592
593	LOCK (wrklock);
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597	{
598	wrk->prev = &wrk_first;
599	wrk->next = wrk_first.next;
600	wrk_first.next->prev = wrk;
601	wrk_first.next = wrk;
602	++started;
603	}
604	else
605	free (wrk);
606
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
608	UNLOCK (wrklock);
609	}
610
611	static void req_send (aio_req req)
612	{
613	while (started < wanted && nreqs >= started)
614	start_thread ();
615
616	++nreqs;
617
618	LOCK (reqlock);
619	reqq_push (&req_queue, req);
620	pthread_cond_signal (&reqwait);
621	UNLOCK (reqlock);
622	}
623
624	static void end_thread (void)
625	{
626	aio_req req;
627
628	Newz (0, req, 1, aio_cb);
629
630	req->type = REQ_QUIT;
631	req->pri = PRI_MAX + PRI_BIAS;
632
633	req_send (req);
634	}
635
636	static void min_parallel (int nthreads)
637	{
638	if (wanted < nthreads)
639	wanted = nthreads;
640	}
641
642	static void max_parallel (int nthreads)
643	{
644	int cur = started;
645
646	if (wanted > nthreads)
647	wanted = nthreads;
648
649	while (cur > wanted)
650	{
651	end_thread ();
652	cur--;
653	}
654
655	while (started > wanted)
656	{
657	poll_wait ();
658	poll_cb (0);
659	}
660	}
661
662	static void create_pipe ()
663	{
664	if (pipe (respipe))
665	croak ("unable to initialize result pipe");
666
667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
668	croak ("cannot set result pipe to nonblocking mode");
669
670	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
671	croak ("cannot set result pipe to nonblocking mode");
672	}
673
674	/*****************************************************************************/
675	/* work around various missing functions */
676
677	#if !HAVE_PREADWRITE
678	# define pread aio_pread
679	# define pwrite aio_pwrite
680
681	/*
682	* make our pread/pwrite safe against themselves, but not against
683	* normal read/write by using a mutex. slows down execution a lot,
684	* but that's your problem, not mine.
685	*/
686	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
687
688	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
689	{
690	ssize_t res;
691	off_t ooffset;
692
693	LOCK (preadwritelock);
694	ooffset = lseek (fd, 0, SEEK_CUR);
695	lseek (fd, offset, SEEK_SET);
696	res = read (fd, buf, count);
697	lseek (fd, ooffset, SEEK_SET);
698	UNLOCK (preadwritelock);
699
700	return res;
701	}
702
703	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
704	{
705	ssize_t res;
706	off_t ooffset;
707
708	LOCK (preadwritelock);
709	ooffset = lseek (fd, 0, SEEK_CUR);
710	lseek (fd, offset, SEEK_SET);
711	res = write (fd, buf, count);
712	lseek (fd, offset, SEEK_SET);
713	UNLOCK (preadwritelock);
714
715	return res;
716	}
717	#endif
718
719	#if !HAVE_FDATASYNC
720	# define fdatasync fsync
721	#endif
722
723	#if !HAVE_READAHEAD
724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
725
726	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
727	{
728	dBUF;
729
730	while (count > 0)
731	{
732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
733
734	pread (fd, aio_buf, len, offset);
735	offset += len;
736	count -= len;
737	}
738
739	errno = 0;
740	}
741
742	#endif
743
744	#if !HAVE_READDIR_R
745	# define readdir_r aio_readdir_r
746
747	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
748
749	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
750	{
751	struct dirent *e;
752	int errorno;
753
754	LOCK (readdirlock);
755
756	e = readdir (dirp);
757	errorno = errno;
758
759	if (e)
760	{
761	*res = ent;
762	strcpy (ent->d_name, e->d_name);
763	}
764	else
765	*res = 0;
766
767	UNLOCK (readdirlock);
768
769	errno = errorno;
770	return e ? 0 : -1;
771	}
772	#endif
773
774	/* sendfile always needs emulation */
775	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
776	{
777	ssize_t res;
778
779	if (!count)
780	return 0;
781
782	#if HAVE_SENDFILE
783	# if __linux
784	res = sendfile (ofd, ifd, &offset, count);
785
786	# elif __freebsd
787	/*
788	* Of course, the freebsd sendfile is a dire hack with no thoughts
789	* wasted on making it similar to other I/O functions.
790	*/
791	{
792	off_t sbytes;
793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
794
795	if (res < 0 && sbytes)
796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
797	res = sbytes;
798	}
799
800	# elif __hpux
801	res = sendfile (ofd, ifd, offset, count, 0, 0);
802
803	# elif __solaris
804	{
805	struct sendfilevec vec;
806	size_t sbytes;
807
808	vec.sfv_fd = ifd;
809	vec.sfv_flag = 0;
810	vec.sfv_off = offset;
811	vec.sfv_len = count;
812
813	res = sendfilev (ofd, &vec, 1, &sbytes);
814
815	if (res < 0 && sbytes)
816	res = sbytes;
817	}
818
819	# endif
820	#else
821	res = -1;
822	errno = ENOSYS;
823	#endif
824
825	if (res < 0
826	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
827	#if __solaris
828	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
829	#endif
830	)
831	)
832	{
833	/* emulate sendfile. this is a major pain in the ass */
834	dBUF;
835
836	res = 0;
837
838	while (count)
839	{
840	ssize_t cnt;
841
842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
843
844	if (cnt <= 0)
845	{
846	if (cnt && !res) res = -1;
847	break;
848	}
849
850	cnt = write (ofd, aio_buf, cnt);
851
852	if (cnt <= 0)
853	{
854	if (cnt && !res) res = -1;
855	break;
856	}
857
858	offset += cnt;
859	res += cnt;
860	count -= cnt;
861	}
862	}
863
864	return res;
865	}
866
867	/* read a full directory */
868	static void scandir_ (aio_req req, worker *self)
869	{
870	DIR *dirp;
871	union
872	{
873	struct dirent d;
874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
875	} *u;
876	struct dirent *entp;
877	char *name, *names;
878	int memlen = 4096;
879	int memofs = 0;
880	int res = 0;
881	int errorno;
882
883	LOCK (wrklock);
884	self->dirp = dirp = opendir (req->dataptr);
885	self->dbuf = u = malloc (sizeof (*u));
886	req->data2ptr = names = malloc (memlen);
887	UNLOCK (wrklock);
888
889	if (dirp && u && names)
890	for (;;)
891	{
892	errno = 0;
893	readdir_r (dirp, &u->d, &entp);
894
895	if (!entp)
896	break;
897
898	name = entp->d_name;
899
900	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
901	{
902	int len = strlen (name) + 1;
903
904	res++;
905
906	while (memofs + len > memlen)
907	{
908	memlen *= 2;
909	LOCK (wrklock);
910	req->data2ptr = names = realloc (names, memlen);
911	UNLOCK (wrklock);
912
913	if (!names)
914	break;
915	}
916
917	memcpy (names + memofs, name, len);
918	memofs += len;
919	}
920	}
921
922	if (errno)
923	res = -1;
924
925	req->result = res;
926	}
927
928	/*****************************************************************************/
929
930	static void *aio_proc (void *thr_arg)
931	{
932	aio_req req;
933	int type;
934	worker *self = (worker *)thr_arg;
935
936	do
937	{
938	LOCK (reqlock);
939
940	for (;;)
941	{
942	self->req = req = reqq_shift (&req_queue);
943
944	if (req)
945	break;
946
947	pthread_cond_wait (&reqwait, &reqlock);
948	}
949
950	UNLOCK (reqlock);
951
952	errno = 0; /* strictly unnecessary */
953	type = req->type; /* remember type for QUIT check */
954
955	if (!(req->flags & FLAG_CANCELLED))
956	switch (type)
957	{
958	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
959	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
960
961	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
962	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
963
964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
967
968	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
969	case REQ_CLOSE: req->result = close (req->fd); break;
970	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
971	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
972	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
975
976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
977	case REQ_FSYNC: req->result = fsync (req->fd); break;
978	case REQ_READDIR: scandir_ (req, self); break;
979
980	case REQ_BUSY:
981	{
982	struct timeval tv;
983
984	tv.tv_sec = req->fd;
985	tv.tv_usec = req->fd2;
986
987	req->result = select (0, 0, 0, 0, &tv);
988	}
989
990	case REQ_GROUP:
991	case REQ_NOP:
992	case REQ_QUIT:
993	break;
994
995	default:
996	req->result = ENOSYS;
997	break;
998	}
999
1000	req->errorno = errno;
1001
1002	LOCK (reslock);
1003
1004	if (!reqq_push (&res_queue, req))
1005	/* write a dummy byte to the pipe so fh becomes ready */
1006	write (respipe [1], &respipe, 1);
1007
1008	self->req = 0;
1009	worker_clear (self);
1010
1011	UNLOCK (reslock);
1012	}
1013	while (type != REQ_QUIT);
1014
1015	LOCK (wrklock);
1016	worker_free (self);
1017	UNLOCK (wrklock);
1018
1019	return 0;
1020	}
1021
1022	/*****************************************************************************/
1023
1024	static void atfork_prepare (void)
1025	{
1026	LOCK (wrklock);
1027	LOCK (reqlock);
1028	LOCK (reslock);
1029	#if !HAVE_PREADWRITE
1030	LOCK (preadwritelock);
1031	#endif
1032	#if !HAVE_READDIR_R
1033	LOCK (readdirlock);
1034	#endif
1035	}
1036
1037	static void atfork_parent (void)
1038	{
1039	#if !HAVE_READDIR_R
1040	UNLOCK (readdirlock);
1041	#endif
1042	#if !HAVE_PREADWRITE
1043	UNLOCK (preadwritelock);
1044	#endif
1045	UNLOCK (reslock);
1046	UNLOCK (reqlock);
1047	UNLOCK (wrklock);
1048	}
1049
1050	static void atfork_child (void)
1051	{
1052	aio_req prv;
1053
1054	while (prv = reqq_shift (&req_queue))
1055	req_free (prv);
1056
1057	while (prv = reqq_shift (&res_queue))
1058	req_free (prv);
1059
1060	while (wrk_first.next != &wrk_first)
1061	{
1062	worker *wrk = wrk_first.next;
1063
1064	if (wrk->req)
1065	req_free (wrk->req);
1066
1067	worker_clear (wrk);
1068	worker_free (wrk);
1069	}
1070
1071	started = 0;
1072	nreqs = 0;
1073
1074	close (respipe [0]);
1075	close (respipe [1]);
1076	create_pipe ();
1077
1078	atfork_parent ();
1079	}
1080
1081	#define dREQ \
1082	aio_req req; \
1083	int req_pri = next_pri; \
1084	next_pri = DEFAULT_PRI + PRI_BIAS; \
1085	\
1086	if (SvOK (callback) && !SvROK (callback)) \
1087	croak ("callback must be undef or of reference type"); \
1088	\
1089	Newz (0, req, 1, aio_cb); \
1090	if (!req) \
1091	croak ("out of memory during aio_req allocation"); \
1092	\
1093	req->callback = newSVsv (callback); \
1094	req->pri = req_pri
1095
1096	#define REQ_SEND \
1097	req_send (req); \
1098	\
1099	if (GIMME_V != G_VOID) \
1100	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1101
1102	MODULE = IO::AIO PACKAGE = IO::AIO	896	MODULE = IO::AIO PACKAGE = IO::AIO
1103		897
1104	PROTOTYPES: ENABLE	898	PROTOTYPES: ENABLE
1105		899
1106	BOOT:	900	BOOT:
1107	{	901	{
		902	static const struct {
		903	const char *name;
		904	IV iv;
		905	} *civ, const_iv[] = {
		906	# define const_niv(name, value) { # name, (IV) value },
		907	# define const_iv(name) { # name, (IV) name },
		908	# define const_eio(name) { # name, (IV) EIO_ ## name },
		909
		910	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		911
		912	const_iv (ENOSYS)
		913	const_iv (EXDEV)
		914	const_iv (EBADR)
		915
		916	const_iv (O_RDONLY)
		917	const_iv (O_WRONLY)
		918	const_iv (O_RDWR)
		919	const_iv (O_CREAT)
		920	const_iv (O_TRUNC)
		921	const_iv (O_EXCL)
		922	const_iv (O_APPEND)
		923
		924	const_iv (O_ASYNC)
		925	const_iv (O_DIRECT)
		926	const_iv (O_NOATIME)
		927
		928	const_iv (O_CLOEXEC)
		929	const_iv (O_NOCTTY)
		930	const_iv (O_NOFOLLOW)
		931	const_iv (O_NONBLOCK)
		932	const_iv (O_EXEC)
		933	const_iv (O_SEARCH)
		934	const_iv (O_DIRECTORY)
		935	const_iv (O_DSYNC)
		936	const_iv (O_RSYNC)
		937	const_iv (O_SYNC)
		938	const_iv (O_PATH)
		939	const_iv (O_TMPFILE)
		940	const_iv (O_TTY_INIT)
		941
		942	const_iv (S_IFIFO)
		943	const_iv (S_IFCHR)
		944	const_iv (S_IFBLK)
		945	const_iv (S_IFLNK)
		946	const_iv (S_IFREG)
		947	const_iv (S_IFDIR)
		948	const_iv (S_IFWHT)
		949	const_iv (S_IFSOCK)
		950	const_iv (S_IFMT)
		951
		952	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		953	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		954	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		955	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		956	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		957	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		958
		959	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		960	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		961	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		962	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		963	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		964
		965	const_iv (ST_RDONLY)
		966	const_iv (ST_NOSUID)
		967	const_iv (ST_NODEV)
		968	const_iv (ST_NOEXEC)
		969	const_iv (ST_SYNCHRONOUS)
		970	const_iv (ST_MANDLOCK)
		971	const_iv (ST_WRITE)
		972	const_iv (ST_APPEND)
		973	const_iv (ST_IMMUTABLE)
		974	const_iv (ST_NOATIME)
		975	const_iv (ST_NODIRATIME)
		976	const_iv (ST_RELATIME)
		977
		978	const_iv (PROT_NONE)
		979	const_iv (PROT_EXEC)
		980	const_iv (PROT_READ)
		981	const_iv (PROT_WRITE)
		982
		983	/*const_iv (MAP_FIXED)*/
		984	const_iv (MAP_PRIVATE)
		985	const_iv (MAP_SHARED)
		986	const_iv (MAP_ANONYMOUS)
		987
		988	/* linuxish */
		989	const_iv (MAP_HUGETLB)
		990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
		994
		995	const_iv (FIEMAP_FLAG_SYNC)
		996	const_iv (FIEMAP_FLAG_XATTR)
		997	const_iv (FIEMAP_FLAGS_COMPAT)
		998	const_iv (FIEMAP_EXTENT_LAST)
		999	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1000	const_iv (FIEMAP_EXTENT_DELALLOC)
		1001	const_iv (FIEMAP_EXTENT_ENCODED)
		1002	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1003	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1004	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1005	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1006	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1007	const_iv (FIEMAP_EXTENT_MERGED)
		1008	const_iv (FIEMAP_EXTENT_SHARED)
		1009
		1010	const_iv (SPLICE_F_MOVE)
		1011	const_iv (SPLICE_F_NONBLOCK)
		1012	const_iv (SPLICE_F_MORE)
		1013	const_iv (SPLICE_F_GIFT)
		1014
		1015	const_iv (SEEK_DATA)
		1016	const_iv (SEEK_HOLE)
		1017
		1018	/* libeio constants */
		1019	const_eio (SEEK_SET)
		1020	const_eio (SEEK_CUR)
		1021	const_eio (SEEK_END)
		1022
		1023	const_eio (MCL_FUTURE)
		1024	const_eio (MCL_CURRENT)
		1025
		1026	const_eio (MS_ASYNC)
		1027	const_eio (MS_INVALIDATE)
		1028	const_eio (MS_SYNC)
		1029
		1030	const_eio (MT_MODIFY)
		1031
		1032	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1033	const_eio (SYNC_FILE_RANGE_WRITE)
		1034	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1035
		1036	const_eio (FALLOC_FL_KEEP_SIZE)
		1037	const_eio (FALLOC_FL_PUNCH_HOLE)
		1038	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1039	const_eio (FALLOC_FL_ZERO_RANGE)
		1040
		1041	const_eio (READDIR_DENTS)
		1042	const_eio (READDIR_DIRS_FIRST)
		1043	const_eio (READDIR_STAT_ORDER)
		1044	const_eio (READDIR_FOUND_UNKNOWN)
		1045
		1046	const_eio (DT_UNKNOWN)
		1047	const_eio (DT_FIFO)
		1048	const_eio (DT_CHR)
		1049	const_eio (DT_DIR)
		1050	const_eio (DT_BLK)
		1051	const_eio (DT_REG)
		1052	const_eio (DT_LNK)
		1053	const_eio (DT_SOCK)
		1054	const_eio (DT_WHT)
		1055	};
		1056
1108	HV *stash = gv_stashpv ("IO::AIO", 1);	1057	aio_stash = gv_stashpv ("IO::AIO" , 1);
1109	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1058	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1110	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1059	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1111	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1060	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1112		1061
1113	create_pipe ();	1062	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1063	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1115	}
1116		1064
		1065	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1066
		1067	reinit ();
		1068	}
		1069
1117	void	1070	void
1118	min_parallel (int nthreads)	1071	reinit ()
1119	PROTOTYPE: $	1072	PROTOTYPE:
1120		1073
1121	void	1074	void
1122	max_parallel (int nthreads)	1075	max_poll_reqs (unsigned int nreqs)
1123	PROTOTYPE: $
1124
1125	int
1126	max_outstanding (int maxreqs)
1127	PROTOTYPE: $	1076	PROTOTYPE: $
1128	CODE:	1077	CODE:
1129	RETVAL = max_outstanding;	1078	eio_set_max_poll_reqs (nreqs);
		1079
		1080	void
		1081	max_poll_time (double nseconds)
		1082	PROTOTYPE: $
		1083	CODE:
		1084	eio_set_max_poll_time (nseconds);
		1085
		1086	void
		1087	min_parallel (unsigned int nthreads)
		1088	PROTOTYPE: $
		1089	CODE:
		1090	eio_set_min_parallel (nthreads);
		1091
		1092	void
		1093	max_parallel (unsigned int nthreads)
		1094	PROTOTYPE: $
		1095	CODE:
		1096	eio_set_max_parallel (nthreads);
		1097
		1098	void
		1099	max_idle (unsigned int nthreads)
		1100	PROTOTYPE: $
		1101	CODE:
		1102	eio_set_max_idle (nthreads);
		1103
		1104	void
		1105	idle_timeout (unsigned int seconds)
		1106	PROTOTYPE: $
		1107	CODE:
		1108	eio_set_idle_timeout (seconds);
		1109
		1110	void
		1111	max_outstanding (unsigned int maxreqs)
		1112	PROTOTYPE: $
		1113	CODE:
1130	max_outstanding = maxreqs;	1114	max_outstanding = maxreqs;
1131	OUTPUT:
1132	RETVAL
1133		1115
1134	void	1116	void
1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1117	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1136	SV * pathname
1137	int flags
1138	int mode
1139	SV * callback
1140	PROTOTYPE: $$$;$
1141	PPCODE:	1118	PPCODE:
1142	{	1119	{
1143	dREQ;	1120	dREQ;
1144		1121
1145	req->type = REQ_OPEN;	1122	req->type = EIO_WD_OPEN;
1146	req->data = newSVsv (pathname);	1123	req_set_path1 (req, pathname);
1147	req->dataptr = SvPVbyte_nolen (req->data);
1148	req->fd = flags;
1149	req->mode = mode;
1150		1124
1151	REQ_SEND;	1125	REQ_SEND;
1152	}	1126	}
1153		1127
1154	void	1128	void
		1129	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1130	PPCODE:
		1131	{
		1132	dREQ;
		1133
		1134	req->type = EIO_OPEN;
		1135	req_set_path1 (req, pathname);
		1136	req->int1 = flags;
		1137	req->int2 = mode;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
1155	aio_close (fh,callback=&PL_sv_undef)	1143	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1156	SV * fh
1157	SV * callback
1158	PROTOTYPE: $;$
1159	ALIAS:	1144	ALIAS:
1160	aio_close = REQ_CLOSE
1161	aio_fsync = REQ_FSYNC	1145	aio_fsync = EIO_FSYNC
1162	aio_fdatasync = REQ_FDATASYNC	1146	aio_fdatasync = EIO_FDATASYNC
		1147	aio_syncfs = EIO_SYNCFS
1163	PPCODE:	1148	PPCODE:
1164	{	1149	{
		1150	int fd = s_fileno_croak (fh, 0);
1165	dREQ;	1151	dREQ;
1166		1152
1167	req->type = ix;	1153	req->type = ix;
1168	req->fh = newSVsv (fh);	1154	req->sv1 = newSVsv (fh);
1169	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->int1 = fd;
1170		1156
1171	REQ_SEND (req);	1157	REQ_SEND;
1172	}	1158	}
1173		1159
1174	void	1160	void
		1161	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1162	PPCODE:
		1163	{
		1164	int fd = s_fileno_croak (fh, 0);
		1165	dREQ;
		1166
		1167	req->type = EIO_SYNC_FILE_RANGE;
		1168	req->sv1 = newSVsv (fh);
		1169	req->int1 = fd;
		1170	req->offs = offset;
		1171	req->size = nbytes;
		1172	req->int2 = flags;
		1173
		1174	REQ_SEND;
		1175	}
		1176
		1177	void
		1178	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1179	PPCODE:
		1180	{
		1181	int fd = s_fileno_croak (fh, 0);
		1182	dREQ;
		1183
		1184	req->type = EIO_FALLOCATE;
		1185	req->sv1 = newSVsv (fh);
		1186	req->int1 = fd;
		1187	req->int2 = mode;
		1188	req->offs = offset;
		1189	req->size = len;
		1190
		1191	REQ_SEND;
		1192	}
		1193
		1194	void
		1195	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1196	PPCODE:
		1197	{
		1198	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1199	int fd = s_fileno_croak (fh, 0);
		1200	dREQ;
		1201
		1202	if (expect_false (close_fd < 0))
		1203	{
		1204	int pipefd [2];
		1205
		1206	if (
		1207	#ifdef _WIN32
		1208	_pipe (pipefd, 1, _O_BINARY) < 0
		1209	#else
		1210	pipe (pipefd) < 0
		1211	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1212	#endif
		1213	|| close (pipefd [1]) < 0
		1214	)
		1215	abort (); /*D*/
		1216
		1217	close_fd = pipefd [0];
		1218	}
		1219
		1220	req->type = EIO_DUP2;
		1221	req->int1 = close_fd;
		1222	req->sv2 = newSVsv (fh);
		1223	req->int2 = fd;
		1224
		1225	REQ_SEND;
		1226	}
		1227
		1228	void
		1229	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1230	PPCODE:
		1231	{
		1232	int fd = s_fileno_croak (fh, 0);
		1233	dREQ;
		1234
		1235	req->type = EIO_SEEK;
		1236	req->sv1 = newSVsv (fh);
		1237	req->int1 = fd;
		1238	req->offs = SvVAL64 (offset);
		1239	req->int2 = whence;
		1240
		1241	REQ_SEND;
		1242	}
		1243
		1244	void
1175	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1245	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1176	SV * fh
1177	UV offset
1178	UV length
1179	SV * data
1180	UV dataoffset
1181	SV * callback
1182	ALIAS:	1246	ALIAS:
1183	aio_read = REQ_READ	1247	aio_read = EIO_READ
1184	aio_write = REQ_WRITE	1248	aio_write = EIO_WRITE
1185	PROTOTYPE: $$$$$;$
1186	PPCODE:	1249	PPCODE:
1187	{	1250	{
1188	aio_req req;
1189	STRLEN svlen;	1251	STRLEN svlen;
		1252	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1190	char *svptr = SvPVbyte (data, svlen);	1253	char *svptr = SvPVbyte (data, svlen);
1191		1254	UV len = SvUV (length);
1192	SvUPGRADE (data, SVt_PV);
1193	SvPOK_on (data);
1194		1255
1195	if (dataoffset < 0)	1256	if (dataoffset < 0)
1196	dataoffset += svlen;	1257	dataoffset += svlen;
1197		1258
1198	if (dataoffset < 0 || dataoffset > svlen)	1259	if (dataoffset < 0 || dataoffset > svlen)
1199	croak ("data offset outside of string");	1260	croak ("dataoffset outside of data scalar");
1200		1261
1201	if (ix == REQ_WRITE)	1262	if (ix == EIO_WRITE)
1202	{	1263	{
1203	/* write: check length and adjust. */	1264	/* write: check length and adjust. */
1204	if (length < 0 || length + dataoffset > svlen)	1265	if (!SvOK (length) || len + dataoffset > svlen)
1205	length = svlen - dataoffset;	1266	len = svlen - dataoffset;
1206	}	1267	}
1207	else	1268	else
1208	{	1269	{
1209	/* read: grow scalar as necessary */	1270	/* read: check type and grow scalar as necessary */
		1271	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1210	svptr = SvGROW (data, length + dataoffset);	1272	svptr = sv_grow (data, len + dataoffset + 1);
		1273	else if (SvCUR (data) < len + dataoffset)
		1274	croak ("length + dataoffset outside of scalar, and cannot grow");
1211	}	1275	}
1212
1213	if (length < 0)
1214	croak ("length must not be negative");
1215		1276
1216	{	1277	{
1217	dREQ;	1278	dREQ;
1218		1279
1219	req->type = ix;	1280	req->type = ix;
1220	req->fh = newSVsv (fh);	1281	req->sv1 = newSVsv (fh);
1221	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1282	req->int1 = fd;
1222	: IoOFP (sv_2io (fh)));	1283	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1223	req->offset = offset;	1284	req->size = len;
1224	req->length = length;
1225	req->data = SvREFCNT_inc (data);	1285	req->sv2 = SvREFCNT_inc (data);
1226	req->dataptr = (char *)svptr + dataoffset;	1286	req->ptr2 = (char *)svptr + dataoffset;
		1287	req->stroffset = dataoffset;
1227		1288
1228	if (!SvREADONLY (data))	1289	if (!SvREADONLY (data))
1229	{	1290	{
1230	SvREADONLY_on (data);	1291	SvREADONLY_on (data);
1231	req->data2ptr = (void *)data;	1292	req->flags |= FLAG_SV2_RO_OFF;
1232	}	1293	}
1233		1294
1234	REQ_SEND;	1295	REQ_SEND;
1235	}	1296	}
1236	}	1297	}
1237		1298
1238	void	1299	void
1239	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1300	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1240	SV * out_fh	1301	ALIAS:
1241	SV * in_fh	1302	aio_readlink = EIO_READLINK
1242	UV in_offset	1303	aio_realpath = EIO_REALPATH
1243	UV length
1244	SV * callback
1245	PROTOTYPE: $$$$;$
1246	PPCODE:	1304	PPCODE:
1247	{	1305	{
		1306	dREQ;
		1307
		1308	req->type = ix;
		1309	req_set_path1 (req, pathname);
		1310
		1311	REQ_SEND;
		1312	}
		1313
		1314	void
		1315	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1316	PPCODE:
		1317	{
		1318	int ifd = s_fileno_croak (in_fh , 0);
		1319	int ofd = s_fileno_croak (out_fh, 1);
1248	dREQ;	1320	dREQ;
1249		1321
1250	req->type = REQ_SENDFILE;	1322	req->type = EIO_SENDFILE;
1251	req->fh = newSVsv (out_fh);	1323	req->sv1 = newSVsv (out_fh);
1252	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1324	req->int1 = ofd;
1253	req->fh2 = newSVsv (in_fh);	1325	req->sv2 = newSVsv (in_fh);
1254	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1326	req->int2 = ifd;
1255	req->offset = in_offset;	1327	req->offs = in_offset;
1256	req->length = length;	1328	req->size = length;
1257		1329
1258	REQ_SEND;	1330	REQ_SEND;
1259	}	1331	}
1260		1332
1261	void	1333	void
1262	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1334	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1263	SV * fh
1264	UV offset
1265	IV length
1266	SV * callback
1267	PROTOTYPE: $$$;$
1268	PPCODE:	1335	PPCODE:
1269	{	1336	{
		1337	int fd = s_fileno_croak (fh, 0);
1270	dREQ;	1338	dREQ;
1271		1339
1272	req->type = REQ_READAHEAD;	1340	req->type = EIO_READAHEAD;
1273	req->fh = newSVsv (fh);	1341	req->sv1 = newSVsv (fh);
1274	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1342	req->int1 = fd;
1275	req->offset = offset;	1343	req->offs = offset;
1276	req->length = length;	1344	req->size = length;
1277		1345
1278	REQ_SEND;	1346	REQ_SEND;
1279	}	1347	}
1280		1348
1281	void	1349	void
1282	aio_stat (fh_or_path,callback=&PL_sv_undef)	1350	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1283	SV * fh_or_path
1284	SV * callback
1285	ALIAS:	1351	ALIAS:
1286	aio_stat = REQ_STAT	1352	aio_stat = EIO_STAT
1287	aio_lstat = REQ_LSTAT	1353	aio_lstat = EIO_LSTAT
		1354	aio_statvfs = EIO_STATVFS
1288	PPCODE:	1355	PPCODE:
1289	{	1356	{
1290	dREQ;	1357	dREQ;
1291		1358
1292	New (0, req->statdata, 1, Stat_t);	1359	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1293	if (!req->statdata)
1294	{
1295	req_free (req);
1296	croak ("out of memory during aio_req->statdata allocation");
1297	}
1298
1299	if (SvPOK (fh_or_path))
1300	{
1301	req->type = ix;
1302	req->data = newSVsv (fh_or_path);
1303	req->dataptr = SvPVbyte_nolen (req->data);
1304	}
1305	else
1306	{
1307	req->type = REQ_FSTAT;
1308	req->fh = newSVsv (fh_or_path);
1309	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1310	}
1311		1360
1312	REQ_SEND;	1361	REQ_SEND;
1313	}	1362	}
1314		1363
		1364	UV
		1365	major (UV dev)
		1366	ALIAS:
		1367	minor = 1
		1368	CODE:
		1369	RETVAL = ix ? major (dev) : minor (dev);
		1370	OUTPUT:
		1371	RETVAL
		1372
		1373	UV
		1374	makedev (UV maj, UV min)
		1375	CODE:
		1376	RETVAL = makedev (maj, min);
		1377	OUTPUT:
		1378	RETVAL
		1379
1315	void	1380	void
		1381	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1382	PPCODE:
		1383	{
		1384	dREQ;
		1385
		1386	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1387	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1388	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1400	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	void
		1406	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1407	PPCODE:
		1408	{
		1409	dREQ;
		1410
		1411	req->int2 = mode;
		1412	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1413
		1414	REQ_SEND;
		1415	}
		1416
		1417	void
		1418	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1419	PPCODE:
		1420	{
		1421	dREQ;
		1422
		1423	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1424	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1425	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1426
		1427	REQ_SEND;
		1428	}
		1429
		1430	void
		1431	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1432	PPCODE:
		1433	{
		1434	dREQ;
		1435
		1436	req->type = EIO_READDIR;
		1437	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1438
		1439	if (flags & EIO_READDIR_DENTS)
		1440	req->int1 |= EIO_READDIR_CUSTOM2;
		1441
		1442	req_set_path1 (req, pathname);
		1443
		1444	REQ_SEND;
		1445	}
		1446
		1447	void
		1448	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
		1453	req->type = EIO_MKDIR;
		1454	req->int2 = mode;
		1455	req_set_path1 (req, pathname);
		1456
		1457	REQ_SEND;
		1458	}
		1459
		1460	void
1316	aio_unlink (pathname,callback=&PL_sv_undef)	1461	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1317	SV * pathname
1318	SV * callback
1319	ALIAS:	1462	ALIAS:
1320	aio_unlink = REQ_UNLINK	1463	aio_unlink = EIO_UNLINK
1321	aio_rmdir = REQ_RMDIR	1464	aio_rmdir = EIO_RMDIR
1322	aio_readdir = REQ_READDIR	1465	aio_readdir = EIO_READDIR
1323	PPCODE:	1466	PPCODE:
1324	{	1467	{
1325	dREQ;	1468	dREQ;
1326		1469
1327	req->type = ix;	1470	req->type = ix;
1328	req->data = newSVsv (pathname);	1471	req_set_path1 (req, pathname);
1329	req->dataptr = SvPVbyte_nolen (req->data);	1472
1330
1331	REQ_SEND;	1473	REQ_SEND;
1332	}	1474	}
1333		1475
1334	void	1476	void
1335	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1477	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1336	SV * oldpath
1337	SV * newpath
1338	SV * callback
1339	ALIAS:	1478	ALIAS:
1340	aio_link = REQ_LINK	1479	aio_link = EIO_LINK
1341	aio_symlink = REQ_SYMLINK	1480	aio_symlink = EIO_SYMLINK
1342	aio_rename = REQ_RENAME	1481	aio_rename = EIO_RENAME
1343	PPCODE:	1482	PPCODE:
1344	{	1483	{
		1484	eio_wd wd2 = 0;
1345	dREQ;	1485	dREQ;
1346		1486
1347	req->type = ix;	1487	req->type = ix;
1348	req->fh = newSVsv (oldpath);	1488	req_set_path1 (req, oldpath);
1349	req->data2ptr = SvPVbyte_nolen (req->fh);	1489	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1350	req->data = newSVsv (newpath);	1490	req->int3 = (long)wd2;
1351	req->dataptr = SvPVbyte_nolen (req->data);
1352		1491
1353	REQ_SEND;	1492	REQ_SEND;
1354	}	1493	}
1355		1494
1356	void	1495	void
1357	aio_busy (delay,callback=&PL_sv_undef)	1496	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1358	double delay
1359	SV * callback
1360	PPCODE:	1497	PPCODE:
1361	{	1498	{
1362	dREQ;	1499	dREQ;
1363		1500
1364	req->type = REQ_BUSY;	1501	req->type = EIO_MKNOD;
1365	req->fd = delay < 0. ? 0 : delay;	1502	req->int2 = (mode_t)mode;
1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1503	req->offs = dev;
1367		1504	req_set_path1 (req, pathname);
		1505
1368	REQ_SEND;	1506	REQ_SEND;
1369	}	1507	}
1370		1508
1371	void	1509	void
		1510	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
		1511	ALIAS:
		1512	aio_mtouch = EIO_MTOUCH
		1513	aio_msync = EIO_MSYNC
		1514	PPCODE:
		1515	{
		1516	STRLEN svlen;
		1517	char *svptr = SvPVbyte (data, svlen);
		1518	UV len = SvUV (length);
		1519
		1520	if (offset < 0)
		1521	offset += svlen;
		1522
		1523	if (offset < 0 || offset > svlen)
		1524	croak ("offset outside of scalar");
		1525
		1526	if (!SvOK (length) || len + offset > svlen)
		1527	len = svlen - offset;
		1528
		1529	{
		1530	dREQ;
		1531
		1532	req->type = ix;
		1533	req->sv2 = SvREFCNT_inc (data);
		1534	req->ptr2 = (char *)svptr + offset;
		1535	req->size = len;
		1536	req->int1 = flags;
		1537
		1538	REQ_SEND;
		1539	}
		1540	}
		1541
		1542	void
		1543	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1544	PPCODE:
		1545	{
		1546	STRLEN svlen;
		1547	char *svptr = SvPVbyte (data, svlen);
		1548	UV len = SvUV (length);
		1549
		1550	if (offset < 0)
		1551	offset += svlen;
		1552
		1553	if (offset < 0 || offset > svlen)
		1554	croak ("offset outside of scalar");
		1555
		1556	if (!SvOK (length) || len + offset > svlen)
		1557	len = svlen - offset;
		1558
		1559	{
		1560	dREQ;
		1561
		1562	req->type = EIO_MLOCK;
		1563	req->sv2 = SvREFCNT_inc (data);
		1564	req->ptr2 = (char *)svptr + offset;
		1565	req->size = len;
		1566
		1567	REQ_SEND;
		1568	}
		1569	}
		1570
		1571	void
		1572	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1573	PPCODE:
		1574	{
		1575	dREQ;
		1576
		1577	req->type = EIO_MLOCKALL;
		1578	req->int1 = flags;
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	int fd = s_fileno_croak (fh, 0);
		1588	dREQ;
		1589
		1590	req->type = EIO_CUSTOM;
		1591	req->sv1 = newSVsv (fh);
		1592	req->int1 = fd;
		1593
		1594	req->feed = fiemap;
		1595	#if HAVE_FIEMAP
		1596	/* keep our fingers crossed that the next two types are 64 bit */
		1597	req->offs = start;
		1598	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1599	req->int2 = flags;
		1600	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1601	#endif
		1602
		1603	REQ_SEND;
		1604	}
		1605
		1606	void
		1607	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1608	PPCODE:
		1609	{
		1610	dREQ;
		1611
		1612	req->type = EIO_BUSY;
		1613	req->nv1 = delay < 0. ? 0. : delay;
		1614
		1615	REQ_SEND;
		1616	}
		1617
		1618	void
1372	aio_group (callback=&PL_sv_undef)	1619	aio_group (SV *callback = &PL_sv_undef)
1373	SV * callback	1620	PPCODE:
		1621	{
		1622	dREQ;
		1623
		1624	req->type = EIO_GROUP;
		1625
		1626	PUTBACK;
		1627	req_submit (req);
		1628	SPAGAIN;
		1629
		1630	XPUSHs (req_sv (req, aio_grp_stash));
		1631	}
		1632
		1633	void
		1634	aio_nop (SV *callback = &PL_sv_undef)
		1635	ALIAS:
		1636	aio_nop = EIO_NOP
		1637	aio_sync = EIO_SYNC
		1638	PPCODE:
		1639	{
		1640	dREQ;
		1641
		1642	req->type = ix;
		1643
		1644	REQ_SEND;
		1645	}
		1646
		1647	int
		1648	aioreq_pri (int pri = NO_INIT)
		1649	CODE:
		1650	RETVAL = next_pri;
		1651	if (items > 0)
		1652	{
		1653	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1654	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1655	next_pri = pri;
		1656	}
		1657	OUTPUT:
		1658	RETVAL
		1659
		1660	void
		1661	aioreq_nice (int nice = 0)
		1662	CODE:
		1663	nice = next_pri - nice;
		1664	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1665	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1666	next_pri = nice;
		1667
		1668	void
		1669	flush ()
		1670	CODE:
		1671	while (eio_nreqs ())
		1672	{
		1673	poll_wait ();
		1674	poll_cb ();
		1675	}
		1676
		1677	int
		1678	poll ()
		1679	CODE:
		1680	poll_wait ();
		1681	RETVAL = poll_cb ();
		1682	OUTPUT:
		1683	RETVAL
		1684
		1685	int
		1686	poll_fileno ()
		1687	CODE:
		1688	RETVAL = s_epipe_fd (&respipe);
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	int
		1693	poll_cb (...)
		1694	PROTOTYPE:
		1695	CODE:
		1696	RETVAL = poll_cb ();
		1697	OUTPUT:
		1698	RETVAL
		1699
		1700	void
		1701	poll_wait ()
		1702	CODE:
		1703	poll_wait ();
		1704
		1705	int
		1706	nreqs ()
		1707	CODE:
		1708	RETVAL = eio_nreqs ();
		1709	OUTPUT:
		1710	RETVAL
		1711
		1712	int
		1713	nready ()
		1714	CODE:
		1715	RETVAL = eio_nready ();
		1716	OUTPUT:
		1717	RETVAL
		1718
		1719	int
		1720	npending ()
		1721	CODE:
		1722	RETVAL = eio_npending ();
		1723	OUTPUT:
		1724	RETVAL
		1725
		1726	int
		1727	nthreads ()
		1728	CODE:
		1729	RETVAL = eio_nthreads ();
		1730	OUTPUT:
		1731	RETVAL
		1732
		1733	int
		1734	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1735	CODE:
		1736	RETVAL = posix_fadvise (fh, offset, length, advice);
		1737	OUTPUT:
		1738	RETVAL
		1739
		1740	IV
		1741	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1742	CODE:
		1743	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1744	OUTPUT:
		1745	RETVAL
		1746
		1747	void
		1748	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1749	PPCODE:
		1750	sv_unmagic (scalar, MMAP_MAGIC);
		1751	{
		1752	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1753	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1754	if (addr == (void *)-1)
		1755	XSRETURN_NO;
		1756
		1757	sv_force_normal (scalar);
		1758
		1759	/* we store the length in mg_obj, as namlen is I32 :/ */
		1760	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1761	->mg_obj = (SV *)length;
		1762
		1763	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1764
		1765	if (!(prot & PROT_WRITE))
		1766	SvREADONLY_on (scalar);
		1767
		1768	if (SvLEN (scalar))
		1769	Safefree (SvPVX (scalar));
		1770
		1771	SvPVX (scalar) = (char *)addr;
		1772	SvCUR_set (scalar, length);
		1773	SvLEN_set (scalar, 0);
		1774	SvPOK_only (scalar);
		1775
		1776	XSRETURN_YES;
		1777	}
		1778
		1779	void
		1780	munmap (SV *scalar)
		1781	CODE:
		1782	sv_unmagic (scalar, MMAP_MAGIC);
		1783
		1784	int
		1785	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1786	ALIAS:
		1787	mprotect = 1
		1788	CODE:
		1789	{
		1790	STRLEN svlen;
		1791	void *addr = SvPVbyte (scalar, svlen);
		1792	STRLEN len = SvUV (length);
		1793
		1794	if (offset < 0)
		1795	offset += svlen;
		1796
		1797	if (offset < 0 || offset > svlen)
		1798	croak ("offset outside of scalar");
		1799
		1800	if (!SvOK (length) || len + offset > svlen)
		1801	len = svlen - offset;
		1802
		1803	addr = (void *)(((intptr_t)addr) + offset);
		1804	eio_page_align (&addr, &len);
		1805
		1806	switch (ix)
		1807	{
		1808	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1809	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1810	}
		1811	}
		1812	OUTPUT:
		1813	RETVAL
		1814
		1815	int
		1816	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1817	CODE:
		1818	{
		1819	STRLEN svlen;
		1820	void *addr = SvPVbyte (scalar, svlen);
		1821	size_t len = SvUV (length);
		1822
		1823	if (offset < 0)
		1824	offset += svlen;
		1825
		1826	if (offset < 0 || offset > svlen)
		1827	croak ("offset outside of scalar");
		1828
		1829	if (!SvOK (length) || len + offset > svlen)
		1830	len = svlen - offset;
		1831
		1832	addr = (void *)(((intptr_t)addr) + offset);
		1833	eio_page_align (&addr, &len);
		1834	#if _POSIX_MEMLOCK_RANGE
		1835	RETVAL = munlock (addr, len);
		1836	#else
		1837	RETVAL = EIO_ENOSYS ();
		1838	#endif
		1839	}
		1840	OUTPUT:
		1841	RETVAL
		1842
		1843	int
		1844	munlockall ()
		1845	CODE:
		1846	#if _POSIX_MEMLOCK
		1847	munlockall ();
		1848	#else
		1849	RETVAL = EIO_ENOSYS ();
		1850	#endif
		1851	OUTPUT:
		1852	RETVAL
		1853
		1854	int
		1855	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1856	CODE:
		1857	{
		1858	#if HAVE_LINUX_SPLICE
		1859	loff_t off_in_, off_out_;
		1860	RETVAL = splice (
		1861	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1862	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1863	length, flags
		1864	);
		1865	#else
		1866	RETVAL = EIO_ENOSYS ();
		1867	#endif
		1868	}
		1869	OUTPUT:
		1870	RETVAL
		1871
		1872	int
		1873	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1874	CODE:
		1875	#if HAVE_LINUX_SPLICE
		1876	RETVAL = tee (rfh, wfh, length, flags);
		1877	#else
		1878	RETVAL = EIO_ENOSYS ();
		1879	#endif
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	int
		1884	pipesize (aio_rfd rfh, int new_size = -1)
		1885	PROTOTYPE: $;$
		1886	CODE:
		1887	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1888	if (new_size >= 0)
		1889	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1890	else
		1891	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1892	#else
		1893	errno = ENOSYS;
		1894	RETVAL = -1;
		1895	#endif
		1896	OUTPUT:
		1897	RETVAL
		1898
		1899	void
		1900	pipe2 (int flags = 0)
1374	PROTOTYPE: ;$	1901	PROTOTYPE: ;$
1375	PPCODE:	1902	PPCODE:
1376	{	1903	{
1377	dREQ;	1904	int fd[2];
		1905	int res;
1378		1906
1379	req->type = REQ_GROUP;	1907	if (flags)
1380	req_send (req);	1908	#if HAVE_PIPE2
		1909	res = pipe2 (fd, flags);
		1910	#else
		1911	res = (errno = ENOSYS, -1);
		1912	#endif
		1913	else
		1914	res = pipe (fd);
1381		1915
1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1916	if (!res)
		1917	{
		1918	EXTEND (SP, 2);
		1919	PUSHs (newmortalFH (fd[0], O_RDONLY));
		1920	PUSHs (newmortalFH (fd[1], O_WRONLY));
		1921	}
1383	}	1922	}
1384		1923
1385	void	1924	void _on_next_submit (SV *cb)
1386	aio_nop (callback=&PL_sv_undef)
1387	SV * callback
1388	PPCODE:
1389	{
1390	dREQ;
1391
1392	req->type = REQ_NOP;
1393
1394	REQ_SEND;
1395	}
1396
1397	void
1398	aioreq_pri (int pri = DEFAULT_PRI)
1399	CODE:
1400	if (pri < PRI_MIN) pri = PRI_MIN;
1401	if (pri > PRI_MAX) pri = PRI_MAX;
1402	next_pri = pri + PRI_BIAS;
1403
1404	void
1405	aioreq_nice (int nice = 0)
1406	CODE:
1407	nice = next_pri - nice;
1408	if (nice < PRI_MIN) nice = PRI_MIN;
1409	if (nice > PRI_MAX) nice = PRI_MAX;
1410	next_pri = nice + PRI_BIAS;
1411
1412	void
1413	flush ()
1414	PROTOTYPE:
1415	CODE:	1925	CODE:
1416	while (nreqs)	1926	SvREFCNT_dec (on_next_submit);
1417	{	1927	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1418	poll_wait ();
1419	poll_cb (0);
1420	}
1421		1928
		1929	PROTOTYPES: DISABLE
		1930
		1931	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1932
		1933	BOOT:
		1934	{
		1935	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1936	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1937	}
		1938
1422	void	1939	void
1423	poll()	1940	DESTROY (SV *self)
1424	PROTOTYPE:
1425	CODE:	1941	CODE:
1426	if (nreqs)	1942	{
		1943	aio_wd wd = SvAIO_WD (self);
		1944	#if HAVE_AT
1427	{	1945	{
1428	poll_wait ();	1946	SV *callback = &PL_sv_undef;
1429	poll_cb (0);	1947	dREQ; /* clobbers next_pri :/ */
		1948	next_pri = req->pri; /* restore next_pri */
		1949	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1950	req->type = EIO_WD_CLOSE;
		1951	req->wd = wd;
		1952	REQ_SEND;
1430	}	1953	}
1431		1954	#else
1432	int	1955	eio_wd_close_sync (wd);
1433	poll_fileno()	1956	#endif
1434	PROTOTYPE:	1957	}
1435	CODE:
1436	RETVAL = respipe [0];
1437	OUTPUT:
1438	RETVAL
1439
1440	int
1441	poll_cb(...)
1442	PROTOTYPE:
1443	CODE:
1444	RETVAL = poll_cb (0);
1445	OUTPUT:
1446	RETVAL
1447
1448	int
1449	poll_some(int max = 0)
1450	PROTOTYPE: $
1451	CODE:
1452	RETVAL = poll_cb (max);
1453	OUTPUT:
1454	RETVAL
1455
1456	void
1457	poll_wait()
1458	PROTOTYPE:
1459	CODE:
1460	if (nreqs)
1461	poll_wait ();
1462
1463	int
1464	nreqs()
1465	PROTOTYPE:
1466	CODE:
1467	RETVAL = nreqs;
1468	OUTPUT:
1469	RETVAL
1470
1471	PROTOTYPES: DISABLE
1472		1958
1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1959	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1474		1960
1475	void	1961	void
1476	cancel (aio_req_ornot req)	1962	cancel (aio_req_ornot req)
1477	CODE:	1963	CODE:
1478	req_cancel (req);	1964	eio_cancel (req);
1479		1965
1480	void	1966	void
1481	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1967	cb (aio_req_ornot req, SV *callback = NO_INIT)
1482	CODE:	1968	PPCODE:
		1969	{
		1970	if (GIMME_V != G_VOID)
		1971	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1972
		1973	if (items > 1)
		1974	{
		1975	SV *cb_cv = get_cb (callback);
		1976
1483	SvREFCNT_dec (req->callback);	1977	SvREFCNT_dec (req->callback);
1484	req->callback = newSVsv (callback);	1978	req->callback = SvREFCNT_inc (cb_cv);
		1979	}
		1980	}
1485		1981
1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1982	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1487		1983
1488	void	1984	void
1489	add (aio_req grp, ...)	1985	add (aio_req grp, ...)
1490	PPCODE:	1986	PPCODE:
1491	{	1987	{
1492	int i;	1988	int i;
1493	aio_req req;
1494		1989
1495	if (grp->fd == 2)	1990	if (grp->int1 == 2)
1496	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1991	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1497		1992
1498	for (i = 1; i < items; ++i )	1993	for (i = 1; i < items; ++i )
1499	{	1994	{
		1995	aio_req req;
		1996
1500	if (GIMME_V != G_VOID)	1997	if (GIMME_V != G_VOID)
1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1998	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1502		1999
1503	req = SvAIO_REQ (ST (i));	2000	req = SvAIO_REQ (ST (i));
1504		2001
1505	if (req)	2002	if (req)
1506	{	2003	eio_grp_add (grp, req);
1507	++grp->length;
1508	req->grp = grp;
1509
1510	req->grp_prev = 0;
1511	req->grp_next = grp->grp_first;
1512
1513	if (grp->grp_first)
1514	grp->grp_first->grp_prev = req;
1515
1516	grp->grp_first = req;
1517	}
1518	}	2004	}
1519	}	2005	}
1520		2006
1521	void	2007	void
1522	cancel_subs (aio_req_ornot req)	2008	cancel_subs (aio_req_ornot req)
…		…
1526	void	2012	void
1527	result (aio_req grp, ...)	2013	result (aio_req grp, ...)
1528	CODE:	2014	CODE:
1529	{	2015	{
1530	int i;	2016	int i;
		2017	AV *av;
		2018
		2019	grp->errorno = errno;
		2020
1531	AV *av = newAV ();	2021	av = newAV ();
		2022	av_extend (av, items - 1);
1532		2023
1533	for (i = 1; i < items; ++i )	2024	for (i = 1; i < items; ++i )
1534	av_push (av, newSVsv (ST (i)));	2025	av_push (av, newSVsv (ST (i)));
1535		2026
1536	SvREFCNT_dec (grp->data);	2027	SvREFCNT_dec (grp->sv1);
1537	grp->data = (SV *)av;	2028	grp->sv1 = (SV *)av;
1538	}	2029	}
		2030
		2031	void
		2032	errno (aio_req grp, int errorno = errno)
		2033	CODE:
		2034	grp->errorno = errorno;
1539		2035
1540	void	2036	void
1541	limit (aio_req grp, int limit)	2037	limit (aio_req grp, int limit)
1542	CODE:	2038	CODE:
1543	grp->fd2 = limit;	2039	eio_grp_limit (grp, limit);
1544	aio_grp_feed (grp);
1545		2040
1546	void	2041	void
1547	feed (aio_req grp, SV *callback=&PL_sv_undef)	2042	feed (aio_req grp, SV *callback = &PL_sv_undef)
1548	CODE:	2043	CODE:
1549	{	2044	{
1550	SvREFCNT_dec (grp->fh2);	2045	SvREFCNT_dec (grp->sv2);
1551	grp->fh2 = newSVsv (callback);	2046	grp->sv2 = newSVsv (callback);
		2047	grp->feed = aio_grp_feed;
1552		2048
1553	if (grp->fd2 <= 0)	2049	if (grp->int2 <= 0)
1554	grp->fd2 = 2;	2050	grp->int2 = 2;
1555		2051
1556	aio_grp_feed (grp);	2052	eio_grp_limit (grp, grp->int2);
1557	}	2053	}
1558		2054

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