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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.77 by root, Thu Oct 26 13:25:40 2006 UTC vs.
Revision 1.241 by root, Sun May 1 17:19:39 2016 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	/* also provides const_iv_ and const_niv_ macros for them */
50	# define NAME_MAX 4096	151	#include "def0.h"
51	#endif
52		152
53	#ifndef PTHREAD_STACK_MIN	153	#ifndef makedev
54	/* care for broken platforms, e.g. windows */	154	# define makedev(maj,min) (((maj) << 8) | (min))
55	# define PTHREAD_STACK_MIN 16384
56	#endif	155	#endif
57		156	#ifndef major
58	#if __ia64	157	# 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	158	#endif
		159	#ifndef minor
		160	# define minor(dev) ((dev) & 0xff)
		161	#endif
65		162
66	/* buffer size for various temporary buffers */	163	#if PAGESIZE <= 0
67	#define AIO_BUFSIZE 65536	164	# define PAGESIZE sysconf (_SC_PAGESIZE)
		165	#endif
68		166
69	#define dBUF \	167	/*****************************************************************************/
70	char *aio_buf; \	168
71	LOCK (wrklock); \	169	static void
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	170	fiemap (eio_req *req)
73	UNLOCK (wrklock); \	171	{
74	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)
75	return -1;	190	return;
76		191
77	enum {	192	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		193
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	194	fiemap->fm_start = req->offs;
92	#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;
93		198
94	typedef struct aio_cb	199	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
95	{	200	return;
96	struct aio_cb *volatile next;
97		201
98	SV *data, *callback;	202	if (req->int3 >= 0 /* not autosizing */
99	SV *fh, *fh2;	203	|| !fiemap->fm_mapped_extents /* no more extents */
100	void *dataptr, *data2ptr;	204	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
101	Stat_t *statdata;	205	goto done;
102	off_t offset;
103	size_t length;
104	ssize_t result;
105		206
106	STRLEN dataoffset;	207	/* else we have to loop -
107	int type;	208	* it would be tempting (actually I tried that first) to just query the
108	int fd, fd2;	209	* number of extents needed, but linux often feels like not returning all
109	int errorno;	210	* extents, without telling us it left any out. this complicates
110	mode_t mode; /* open */	211	* this quite a bit.
		212	*/
111		213
112	unsigned char flags;	214	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
113	unsigned char pri;
114		215
115	SV *self; /* the perl counterpart of this request, if any */	216	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 int started, wanted;
138	static volatile int nreqs;
139	static int respipe [2];
140
141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143	#else
144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
145	#endif
146
147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
149
150	/* worker threads management */
151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
152
153	typedef struct worker {
154	/* locked by wrklock */
155	struct worker *prev, *next;
156
157	pthread_t tid;
158
159	/* locked by reslock, reqlock or wrklock */
160	aio_req req; /* currently processed request */
161	void *dbuf;
162	DIR *dirp;
163	} worker;
164
165	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
166
167	static void worker_clear (worker *wrk)
168	{
169	if (wrk->dirp)
170	{	217	{
171	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) */
172	wrk->dirp = 0;	219	char scratch[3072];
173	}	220	struct fiemap *incmap = (struct fiemap *)scratch;
174		221
175	if (wrk->dbuf)	222	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
176	{	223	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
177	free (wrk->dbuf);	224	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
178	wrk->dbuf = 0;	225	incmap->fm_flags = fiemap->fm_flags;
179	}	226	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
180	}
181		227
182	static void worker_free (worker *wrk)	228	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
183	{
184	wrk->next->prev = wrk->prev;
185	wrk->prev->next = wrk->next;
186
187	free (wrk);
188	}
189
190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
192	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
193
194	/*
195	* a somewhat faster data structure might be nice, but
196	* with 8 priorities this actually needs <20 insns
197	* per shift, the most expensive operation.
198	*/
199	typedef struct {
200	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
201	int size;
202	} reqq;
203
204	static reqq req_queue;
205	static reqq res_queue;
206
207	int reqq_push (reqq *q, aio_req req)
208	{
209	int pri = req->pri;
210	req->next = 0;
211
212	if (q->qe[pri])
213	{
214	q->qe[pri]->next = req;
215	q->qe[pri] = req;
216	}
217	else
218	q->qe[pri] = q->qs[pri] = req;
219
220	return q->size++;
221	}
222
223	aio_req reqq_shift (reqq *q)
224	{
225	int pri;
226
227	if (!q->size)
228	return 0;	229	return;
229		230
230	--q->size;	231	if (!incmap->fm_mapped_extents)
		232	goto done;
231		233
232	for (pri = NUM_PRI; pri--; )	234	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
233	{	235	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
234	aio_req req = q->qs[pri];	236	errno = ENOMEM;
235
236	if (req)	237	if (!fiemap)
		238	return;
		239
		240	req->ptr1 = fiemap;
		241
		242	for (count = 0; count < incmap->fm_mapped_extents; ++count)
237	{	243	{
238	if (!(q->qs[pri] = req->next))	244	struct fiemap_extent *e = incmap->fm_extents + count;
239	q->qe[pri] = 0;
240		245
241	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
242	}	254	}
243	}	255	}
244		256
245	abort ();	257	done:
246	}	258	req->result = 0;
247		259
248	static int poll_cb (int max);	260	#else
249	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
250	static void req_free (aio_req req);	281	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	282	static void req_cancel (aio_req req);
252		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
253	/* must be called at most once */	298	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	299	static SV *
		300	req_sv (aio_req req, HV *stash)
255	{	301	{
256	if (!req->self)	302	if (!req->self)
257	{	303	{
258	req->self = (SV *)newHV ();	304	req->self = (SV *)newHV ();
259	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	305	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
260	}	306	}
261		307
262	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	308	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
263	}	309	}
264		310
265	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)
266	{	319	{
267	MAGIC *mg;	320	MAGIC *mg;
268		321
269	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")))
270	croak ("object of class " AIO_REQ_KLASS " expected");	327	croak ("object of class IO::AIO::REQ expected");
271		328
272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	329	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
273		330
274	return mg ? (aio_req)mg->mg_ptr : 0;	331	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	332	}
276		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
277	static void aio_grp_feed (aio_req grp)	371	aio_grp_feed (aio_req grp)
278	{	372	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	373	if (grp->sv2 && SvOK (grp->sv2))
280	{	374	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	375	dSP;
286		376
287	ENTER;	377	ENTER;
288	SAVETMPS;	378	SAVETMPS;
289	PUSHMARK (SP);	379	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	380	XPUSHs (req_sv (grp, aio_grp_stash));
291	PUTBACK;	381	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	382	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	383	SPAGAIN;
294	FREETMPS;	384	FREETMPS;
295	LEAVE;	385	LEAVE;
296	}
297
298	/* stop if no progress has been made */
299	if (old_len == grp->length)
300	{
301	SvREFCNT_dec (grp->fh2);
302	grp->fh2 = 0;
303	break;
304	}
305	}	386	}
306	}	387	}
307		388
308	static void aio_grp_dec (aio_req grp)	389	static void
		390	req_submit (eio_req *req)
309	{	391	{
310	--grp->length;	392	eio_submit (req);
311		393
312	/* call feeder, if applicable */	394	if (expect_false (on_next_submit))
313	aio_grp_feed (grp);
314
315	/* finish, if done */
316	if (!grp->length && grp->fd)
317	{	395	{
318	req_invoke (grp);	396	dSP;
319	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);
320	}	404	}
321	}	405	}
322		406
323	static void poll_wait ()	407	static int
		408	req_invoke (eio_req *req)
324	{	409	{
325	fd_set rfd;	410	if (req->flags & FLAG_SV2_RO_OFF)
		411	SvREADONLY_off (req->sv2);
326		412
327	while (nreqs)	413	if (!EIO_CANCELLED (req) && req->callback)
328	{	414	{
329	int size;
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331	LOCK (reslock);
332	#endif
333	size = res_queue.size;
334	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335	UNLOCK (reslock);
336	#endif
337
338	if (size)
339	return;
340
341	FD_ZERO(&rfd);
342	FD_SET(respipe [0], &rfd);
343
344	select (respipe [0] + 1, &rfd, 0, 0, 0);
345	}
346	}
347
348	static void req_invoke (aio_req req)
349	{
350	dSP;	415	dSP;
351		416	static SV *sv_result_cache; /* caches the result integer SV */
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	417	SV *sv_result;
353	{
354	errno = req->errorno;
355		418
356	ENTER;	419	ENTER;
357	SAVETMPS;	420	SAVETMPS;
358	PUSHMARK (SP);	421	PUSHMARK (SP);
359	EXTEND (SP, 1);	422	EXTEND (SP, 1);
360		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
361	switch (req->type)	437	switch (req->type)
362	{	438	{
		439	case EIO_WD_OPEN:
		440	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		441	break;
		442
363	case REQ_READDIR:	443	case EIO_READDIR:
364	{	444	{
365	SV *rv = &PL_sv_undef;	445	SV *rv = &PL_sv_undef;
366		446
367	if (req->result >= 0)	447	if (req->result >= 0)
368	{	448	{
369	int i;	449	int i;
370	char *buf = req->data2ptr;	450	char *names = (char *)req->ptr2;
		451	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371	AV *av = newAV ();	452	AV *av = newAV ();
372		453
373	av_extend (av, req->result - 1);	454	av_extend (av, req->result - 1);
374		455
375	for (i = 0; i < req->result; ++i)	456	for (i = 0; i < req->result; ++i)
376	{	457	{
377	SV *sv = newSVpv (buf, 0);	458	if (req->int1 & EIO_READDIR_DENTS)
		459	{
		460	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378		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
379	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);
380	buf += SvCUR (sv) + 1;	490	names += SvCUR (name) + 1;
		491	}
381	}	492	}
382		493
383	rv = sv_2mortal (newRV_noinc ((SV *)av));	494	rv = sv_2mortal (newRV_noinc ((SV *)av));
384	}	495	}
385		496
386	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))));
387	}	501	}
388	break;	502	break;
389		503
390	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:
391	{	510	{
392	/* convert fd to fh */	511	SV *rv = &PL_sv_undef;
393	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));
394		523
395	PUSHs (sv_2mortal (newSViv (req->result)));	524	rv = sv_2mortal (newRV_noinc ((SV *)hv));
396	PUTBACK;
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
398	SPAGAIN;
399		525
400	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
401		539
402	PUSHMARK (SP);	540	PUSHs (rv);
403	XPUSHs (sv_2mortal (fh));
404	}	541	}
		542
405	break;	543	break;
406		544
407	case REQ_GROUP:	545	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	546	req->int1 = 2; /* mark group as finished */
409		547
410	if (req->data)	548	if (req->sv1)
411	{	549	{
412	int i;	550	int i;
413	AV *av = (AV *)req->data;	551	AV *av = (AV *)req->sv1;
414		552
415	EXTEND (SP, AvFILL (av) + 1);	553	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	554	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	555	PUSHs (*av_fetch (av, i, 0));
418	}	556	}
419	break;	557	break;
420		558
421	case REQ_NOP:	559	case EIO_NOP:
422	case REQ_BUSY:	560	case EIO_BUSY:
423	break;	561	break;
424		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
425	default:	640	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	641	PUSHs (sv_result);
427	break;	642	break;
428	}	643	}
429		644
		645	errno = req->errorno;
430		646
431	PUTBACK;	647	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	648	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	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;
434		655
435	FREETMPS;	656	FREETMPS;
436	LEAVE;	657	LEAVE;
		658
		659	PUTBACK;
437	}	660	}
438		661
439	if (req->grp)	662	return !!SvTRUE (ERRSV);
440	{
441	aio_req grp = req->grp;
442
443	/* unlink request */
444	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
445	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
446
447	if (grp->grp_first == req)
448	grp->grp_first = req->grp_next;
449
450	aio_grp_dec (grp);
451	}
452
453	if (SvTRUE (ERRSV))
454	{
455	req_free (req);
456	croak (0);
457	}
458	}	663	}
459		664
460	static void req_free (aio_req req)	665	static void
		666	req_destroy (aio_req req)
461	{	667	{
462	if (req->self)	668	if (req->self)
463	{	669	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	670	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	671	SvREFCNT_dec (req->self);
466	}	672	}
467		673
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	674	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	675	SvREFCNT_dec (req->sv2);
		676	SvREFCNT_dec (req->sv3);
		677	SvREFCNT_dec (req->sv4);
471	SvREFCNT_dec (req->callback);	678	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473		679
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476
477	Safefree (req);	680	free (req);
478	}	681	}
479		682
		683	static void
480	static void req_cancel_subs (aio_req grp)	684	req_cancel_subs (aio_req grp)
481	{	685	{
482	aio_req sub;
483
484	if (grp->type != REQ_GROUP)	686	if (grp->type != EIO_GROUP)
485	return;	687	return;
486		688
487	SvREFCNT_dec (grp->fh2);	689	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	690	grp->sv2 = 0;
489		691
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	692	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	693	}
493		694
494	static void req_cancel (aio_req req)	695	static void ecb_cold
		696	create_respipe (void)
495	{	697	{
496	req->flags |= FLAG_CANCELLED;	698	if (s_epipe_renew (&respipe))
497		699	croak ("IO::AIO: unable to initialize result pipe");
498	req_cancel_subs (req);
499	}	700	}
500		701
501	static int poll_cb (int max)	702	static void
		703	poll_wait (void)
502	{	704	{
503	dSP;	705	while (eio_nreqs ())
504	int count = 0;	706	{
505	int do_croak = 0;	707	int size;
		708
		709	X_LOCK (EIO_POOL->reslock);
		710	size = EIO_POOL->res_queue.size;
		711	X_UNLOCK (EIO_POOL->reslock);
		712
		713	if (size)
		714	return;
		715
		716	etp_maybe_start_thread (EIO_POOL);
		717
		718	s_epipe_wait (&respipe);
		719	}
		720	}
		721
		722	static int
		723	poll_cb (void)
		724	{
		725	for (;;)
		726	{
		727	int res = eio_poll ();
		728
		729	if (res > 0)
		730	croak (0);
		731
		732	if (!max_outstanding || max_outstanding > eio_nreqs ())
		733	return res;
		734
		735	poll_wait ();
		736	}
		737	}
		738
		739	static void ecb_cold
		740	reinit (void)
		741	{
		742	create_respipe ();
		743
		744	if (eio_init (want_poll, done_poll) < 0)
		745	croak ("IO::AIO: unable to initialise eio library");
		746	}
		747
		748	/*****************************************************************************/
		749
		750	#if !_POSIX_MAPPED_FILES
		751	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		752	# define munmap(addr,length) EIO_ENOSYS ()
		753	#endif
		754
		755	#if !_POSIX_MEMORY_PROTECTION
		756	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		757	#endif
		758
		759	#define MMAP_MAGIC PERL_MAGIC_ext
		760
		761	static int ecb_cold
		762	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		763	{
		764	int old_errno = errno;
		765	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		766	errno = old_errno;
		767
		768	mg->mg_obj = 0; /* just in case */
		769
		770	SvREADONLY_off (sv);
		771
		772	if (SvPVX (sv) != mg->mg_ptr)
		773	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		774
		775	SvCUR_set (sv, 0);
		776	SvPVX (sv) = 0;
		777	SvOK_off (sv);
		778
		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;
506	aio_req req;	799	aio_req req;
		800	int req_pri = next_pri;
		801	next_pri = EIO_PRI_DEFAULT;
507		802
508	while (max <= 0 || count < max)	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)))
509	{	830	{
510	LOCK (reslock);	831	SV *rv = SvRV (path);
511	req = reqq_shift (&res_queue);	832	SV *wdob;
512		833
513	if (req)	834	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
514	{	835	{
515	if (!res_queue.size)	836	path = AvARRAY (rv)[1];
		837	wdob = AvARRAY (rv)[0];
		838
		839	if (SvOK (wdob))
516	{	840	{
517	/* read any signals sent by the worker threads */	841	*wd = SvAIO_WD (wdob);
518	char buf [32];	842	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
519	while (read (respipe [0], buf, 32) == 32)
520	;
521	}	843	}
		844	else
		845	*wd = EIO_INVALID_WD;
522	}	846	}
523		847	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
524	UNLOCK (reslock);
525
526	if (!req)
527	break;
528
529	--nreqs;
530
531	if (req->type == REQ_QUIT)
532	started--;
533	else if (req->type == REQ_GROUP && req->length)
534	{	848	{
535	req->fd = 1; /* mark request as delayed */	849	*wd = (aio_wd)(long)SvIVX (rv);
536	continue;	850	*wdsv = SvREFCNT_inc_NN (rv);
		851	*ptr = ".";
		852	return; /* path set to "." */
537	}	853	}
538	else	854	else
539	{	855	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
540	if (req->type == REQ_READ)
541	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544	SvREADONLY_off (req->data);
545
546	if (req->statdata)
547	{
548	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549	PL_laststatval = req->result;
550	PL_statcache = *(req->statdata);
551	}
552
553	req_invoke (req);
554
555	count++;
556	}
557
558	req_free (req);
559	}	856	}
560		857
561	return count;	858	*pathsv = newSVsv (path);
		859	*ptr = SvPVbyte_nolen (*pathsv);
562	}	860	}
563		861
564	static void *aio_proc(void *arg);	862	static void ecb_noinline
565		863	req_set_path1 (aio_req req, SV *path)
566	static void start_thread (void)
567	{	864	{
568	sigset_t fullsigset, oldsigset;	865	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
569	pthread_attr_t attr;	866	}
570		867
571	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;
572		872
573	if (!wrk)	873	switch (SvTYPE (rv))
574	croak ("unable to allocate worker thread data");
575
576	pthread_attr_init (&attr);
577	pthread_attr_setstacksize (&attr, STACKSIZE);
578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580	sigfillset (&fullsigset);
581
582	LOCK (wrklock);
583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584
585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
586	{	874	{
587	wrk->prev = &wrk_first;	875	case SVt_PVIO:
588	wrk->next = wrk_first.next;	876	case SVt_PVLV:
589	wrk_first.next->prev = wrk;	877	case SVt_PVGV:
590	wrk_first.next = wrk;	878	req->type = type_fh;
591	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;
592	}	887	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	888	}
599		889
600	static void req_send (aio_req req)	890	XS(boot_IO__AIO) ecb_cold;
601	{
602	while (started < wanted && nreqs >= started)
603	start_thread ();
604		891
605	++nreqs;	892	MODULE = IO::AIO PACKAGE = IO::AIO
606		893
607	LOCK (reqlock);	894	PROTOTYPES: ENABLE
608	reqq_push (&req_queue, req);
609	pthread_cond_signal (&reqwait);
610	UNLOCK (reqlock);
611	}
612		895
613	static void end_thread (void)	896	BOOT:
614	{	897	{
615	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 },
616		905
617	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)
618		911
619	req->type = REQ_QUIT;	912	/* for lseek */
620	req->pri = PRI_MAX + PRI_BIAS;	913	const_iv (SEEK_DATA)
		914	const_iv (SEEK_HOLE)
621		915
622	req_send (req);	916	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
623	}	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)
624		922
625	static void min_parallel (int nthreads)	923	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
626	{	924	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
627	if (wanted < nthreads)	925	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
628	wanted = nthreads;	926	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
629	}	927	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
630		928
631	static void max_parallel (int nthreads)	929	/* the second block will be 0 when missing */
632	{	930	const_iv (O_RDONLY)
633	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)
634		937
635	if (wanted > nthreads)	938	const_iv (O_ASYNC)
636	wanted = nthreads;	939	const_iv (O_DIRECT)
		940	const_iv (O_NOATIME)
637		941
638	while (cur > wanted)	942	const_iv (O_CLOEXEC)
639	{	943	const_iv (O_NOCTTY)
640	end_thread ();	944	const_iv (O_NOFOLLOW)
641	cur--;	945	const_iv (O_NONBLOCK)
642	}	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)
643		955
644	while (started > wanted)	956	const_iv (S_IFIFO)
645	{	957	const_iv (S_IFCHR)
646	poll_wait ();	958	const_iv (S_IFBLK)
647	poll_cb (0);	959	const_iv (S_IFLNK)
648	}	960	const_iv (S_IFREG)
649	}	961	const_iv (S_IFDIR)
		962	const_iv (S_IFWHT)
		963	const_iv (S_IFSOCK)
		964	const_iv (S_IFMT)
650		965
651	static void create_pipe ()	966	const_iv (ST_RDONLY)
652	{	967	const_iv (ST_NOSUID)
653	if (pipe (respipe))	968	const_iv (ST_NODEV)
654	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)
655		978
656	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	979	const_iv (PROT_NONE)
657	croak ("cannot set result pipe to nonblocking mode");	980	const_iv (PROT_EXEC)
		981	const_iv (PROT_READ)
		982	const_iv (PROT_WRITE)
658		983
659	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	984	const_iv (MAP_PRIVATE)
660	croak ("cannot set result pipe to nonblocking mode");	985	const_iv (MAP_SHARED)
661	}	986	const_iv (MAP_FIXED)
		987	const_iv (MAP_ANONYMOUS)
662		988
663	/*****************************************************************************/	989	/* linuxish */
664	/* work around various missing functions */	990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
		994	const_iv (MAP_GROWSDOWN)
		995	const_iv (MAP_32BIT)
		996	const_iv (MAP_HUGETLB)
		997	const_iv (MAP_STACK)
665		998
666	#if !HAVE_PREADWRITE	999	const_iv (FIEMAP_FLAG_SYNC)
667	# define pread aio_pread	1000	const_iv (FIEMAP_FLAG_XATTR)
668	# define pwrite aio_pwrite	1001	const_iv (FIEMAP_FLAGS_COMPAT)
		1002	const_iv (FIEMAP_EXTENT_LAST)
		1003	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1004	const_iv (FIEMAP_EXTENT_DELALLOC)
		1005	const_iv (FIEMAP_EXTENT_ENCODED)
		1006	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1007	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1008	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1009	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1010	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1011	const_iv (FIEMAP_EXTENT_MERGED)
		1012	const_iv (FIEMAP_EXTENT_SHARED)
669		1013
670	/*	1014	const_iv (SPLICE_F_MOVE)
671	* make our pread/pwrite safe against themselves, but not against	1015	const_iv (SPLICE_F_NONBLOCK)
672	* normal read/write by using a mutex. slows down execution a lot,	1016	const_iv (SPLICE_F_MORE)
673	* but that's your problem, not mine.	1017	const_iv (SPLICE_F_GIFT)
674	*/
675	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
676		1018
677	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1019	/* these are libeio constants, and are independent of gendef0 */
678	{	1020	const_eio (SEEK_SET)
679	ssize_t res;	1021	const_eio (SEEK_CUR)
680	off_t ooffset;	1022	const_eio (SEEK_END)
681		1023
682	LOCK (preadwritelock);	1024	const_eio (MCL_FUTURE)
683	ooffset = lseek (fd, 0, SEEK_CUR);	1025	const_eio (MCL_CURRENT)
684	lseek (fd, offset, SEEK_SET);
685	res = read (fd, buf, count);
686	lseek (fd, ooffset, SEEK_SET);
687	UNLOCK (preadwritelock);
688		1026
689	return res;	1027	const_eio (MS_ASYNC)
690	}	1028	const_eio (MS_INVALIDATE)
		1029	const_eio (MS_SYNC)
691		1030
692	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1031	const_eio (MT_MODIFY)
693	{
694	ssize_t res;
695	off_t ooffset;
696		1032
697	LOCK (preadwritelock);	1033	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
698	ooffset = lseek (fd, 0, SEEK_CUR);	1034	const_eio (SYNC_FILE_RANGE_WRITE)
699	lseek (fd, offset, SEEK_SET);	1035	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
700	res = write (fd, buf, count);
701	lseek (fd, offset, SEEK_SET);
702	UNLOCK (preadwritelock);
703		1036
704	return res;	1037	const_eio (FALLOC_FL_KEEP_SIZE)
705	}	1038	const_eio (FALLOC_FL_PUNCH_HOLE)
706	#endif	1039	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1040	const_eio (FALLOC_FL_ZERO_RANGE)
707		1041
708	#if !HAVE_FDATASYNC	1042	const_eio (READDIR_DENTS)
709	# define fdatasync fsync	1043	const_eio (READDIR_DIRS_FIRST)
710	#endif	1044	const_eio (READDIR_STAT_ORDER)
		1045	const_eio (READDIR_FOUND_UNKNOWN)
711		1046
712	#if !HAVE_READAHEAD	1047	const_eio (DT_UNKNOWN)
713	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	1048	const_eio (DT_FIFO)
714		1049	const_eio (DT_CHR)
715	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	1050	const_eio (DT_DIR)
716	{	1051	const_eio (DT_BLK)
717	dBUF;	1052	const_eio (DT_REG)
718		1053	const_eio (DT_LNK)
719	while (count > 0)	1054	const_eio (DT_SOCK)
720	{	1055	const_eio (DT_WHT)
721	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
722
723	pread (fd, aio_buf, len, offset);
724	offset += len;
725	count -= len;
726	}
727
728	errno = 0;
729	}
730
731	#endif
732
733	#if !HAVE_READDIR_R
734	# define readdir_r aio_readdir_r
735
736	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
737
738	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
739	{
740	struct dirent *e;
741	int errorno;
742
743	LOCK (readdirlock);
744
745	e = readdir (dirp);
746	errorno = errno;
747
748	if (e)
749	{
750	*res = ent;
751	strcpy (ent->d_name, e->d_name);
752	}
753	else
754	*res = 0;
755
756	UNLOCK (readdirlock);
757
758	errno = errorno;
759	return e ? 0 : -1;
760	}
761	#endif
762
763	/* sendfile always needs emulation */
764	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
765	{
766	ssize_t res;
767
768	if (!count)
769	return 0;
770
771	#if HAVE_SENDFILE
772	# if __linux
773	res = sendfile (ofd, ifd, &offset, count);
774
775	# elif __freebsd
776	/*
777	* Of course, the freebsd sendfile is a dire hack with no thoughts
778	* wasted on making it similar to other I/O functions.
779	*/
780	{
781	off_t sbytes;
782	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
783
784	if (res < 0 && sbytes)
785	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
786	res = sbytes;
787	}	1056	};
788		1057
789	# elif __hpux	1058	aio_stash = gv_stashpv ("IO::AIO" , 1);
790	res = sendfile (ofd, ifd, offset, count, 0, 0);	1059	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1060	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1061	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
791		1062
792	# elif __solaris	1063	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
793	{	1064	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
794	struct sendfilevec vec;
795	size_t sbytes;
796		1065
797	vec.sfv_fd = ifd;	1066	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
798	vec.sfv_flag = 0;
799	vec.sfv_off = offset;
800	vec.sfv_len = count;
801		1067
802	res = sendfilev (ofd, &vec, 1, &sbytes);	1068	reinit ();
		1069	}
803		1070
804	if (res < 0 && sbytes)	1071	void
		1072	reinit ()
		1073	PROTOTYPE:
		1074
		1075	void
		1076	max_poll_reqs (unsigned int nreqs)
		1077	PROTOTYPE: $
		1078	CODE:
		1079	eio_set_max_poll_reqs (nreqs);
		1080
		1081	void
		1082	max_poll_time (double nseconds)
		1083	PROTOTYPE: $
		1084	CODE:
		1085	eio_set_max_poll_time (nseconds);
		1086
		1087	void
		1088	min_parallel (unsigned int nthreads)
		1089	PROTOTYPE: $
		1090	CODE:
		1091	eio_set_min_parallel (nthreads);
		1092
		1093	void
		1094	max_parallel (unsigned int nthreads)
		1095	PROTOTYPE: $
		1096	CODE:
		1097	eio_set_max_parallel (nthreads);
		1098
		1099	void
		1100	max_idle (unsigned int nthreads)
		1101	PROTOTYPE: $
		1102	CODE:
		1103	eio_set_max_idle (nthreads);
		1104
		1105	void
		1106	idle_timeout (unsigned int seconds)
		1107	PROTOTYPE: $
		1108	CODE:
		1109	eio_set_idle_timeout (seconds);
		1110
		1111	void
		1112	max_outstanding (unsigned int maxreqs)
		1113	PROTOTYPE: $
		1114	CODE:
		1115	max_outstanding = maxreqs;
		1116
		1117	void
		1118	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1119	PPCODE:
		1120	{
		1121	dREQ;
		1122
		1123	req->type = EIO_WD_OPEN;
		1124	req_set_path1 (req, pathname);
		1125
		1126	REQ_SEND;
		1127	}
		1128
		1129	void
		1130	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1131	PPCODE:
		1132	{
		1133	dREQ;
		1134
		1135	req->type = EIO_OPEN;
		1136	req_set_path1 (req, pathname);
		1137	req->int1 = flags;
		1138	req->int2 = mode;
		1139
		1140	REQ_SEND;
		1141	}
		1142
		1143	void
		1144	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1145	ALIAS:
		1146	aio_fsync = EIO_FSYNC
		1147	aio_fdatasync = EIO_FDATASYNC
		1148	aio_syncfs = EIO_SYNCFS
		1149	PPCODE:
		1150	{
		1151	int fd = s_fileno_croak (fh, 0);
		1152	dREQ;
		1153
		1154	req->type = ix;
		1155	req->sv1 = newSVsv (fh);
		1156	req->int1 = fd;
		1157
		1158	REQ_SEND;
		1159	}
		1160
		1161	void
		1162	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1163	PPCODE:
		1164	{
		1165	int fd = s_fileno_croak (fh, 0);
		1166	dREQ;
		1167
		1168	req->type = EIO_SYNC_FILE_RANGE;
		1169	req->sv1 = newSVsv (fh);
		1170	req->int1 = fd;
		1171	req->offs = offset;
805	res = sbytes;	1172	req->size = nbytes;
806	}	1173	req->int2 = flags;
807		1174
808	# endif	1175	REQ_SEND;
		1176	}
		1177
		1178	void
		1179	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1180	PPCODE:
		1181	{
		1182	int fd = s_fileno_croak (fh, 0);
		1183	dREQ;
		1184
		1185	req->type = EIO_FALLOCATE;
		1186	req->sv1 = newSVsv (fh);
		1187	req->int1 = fd;
		1188	req->int2 = mode;
		1189	req->offs = offset;
		1190	req->size = len;
		1191
		1192	REQ_SEND;
		1193	}
		1194
		1195	void
		1196	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1197	PPCODE:
		1198	{
		1199	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1200	int fd = s_fileno_croak (fh, 0);
		1201	dREQ;
		1202
		1203	if (expect_false (close_fd < 0))
		1204	{
		1205	int pipefd [2];
		1206
		1207	if (
		1208	#ifdef _WIN32
		1209	_pipe (pipefd, 1, _O_BINARY) < 0
809	#else	1210	#else
810	res = -1;	1211	pipe (pipefd) < 0
811	errno = ENOSYS;	1212	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
812	#endif	1213	#endif
813		1214	|| close (pipefd [1]) < 0
814	if (res < 0
815	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
816	#if __solaris
817	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
818	#endif
819	)
820	)
821	{
822	/* emulate sendfile. this is a major pain in the ass */
823	dBUF;
824
825	res = 0;
826
827	while (count)
828	{
829	ssize_t cnt;
830
831	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
832
833	if (cnt <= 0)
834	{	1215	)
835	if (cnt && !res) res = -1;	1216	abort (); /*D*/
836	break;
837	}
838		1217
839	cnt = write (ofd, aio_buf, cnt);	1218	close_fd = pipefd [0];
840
841	if (cnt <= 0)
842	{
843	if (cnt && !res) res = -1;
844	break;
845	}
846
847	offset += cnt;
848	res += cnt;
849	count -= cnt;
850	}
851	}
852
853	return res;
854	}
855
856	/* read a full directory */
857	static void scandir_ (aio_req req, worker *self)
858	{
859	DIR *dirp;
860	union
861	{
862	struct dirent d;
863	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
864	} *u;
865	struct dirent *entp;
866	char *name, *names;
867	int memlen = 4096;
868	int memofs = 0;
869	int res = 0;
870	int errorno;
871
872	LOCK (wrklock);
873	self->dirp = dirp = opendir (req->dataptr);
874	self->dbuf = u = malloc (sizeof (*u));
875	req->data2ptr = names = malloc (memlen);
876	UNLOCK (wrklock);
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	}	1219	}
909	}
910		1220
911	if (errno)	1221	req->type = EIO_DUP2;
912	res = -1;	1222	req->int1 = close_fd;
913		1223	req->sv2 = newSVsv (fh);
914	req->result = res;	1224	req->int2 = fd;
915	}
916		1225
917	/*****************************************************************************/	1226	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	}	1227	}
1010		1228
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	1229	void
1107	min_parallel (nthreads)	1230	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1108	int nthreads	1231	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: $$$;$
1123	PPCODE:
1124	{	1232	{
		1233	int fd = s_fileno_croak (fh, 0);
1125	dREQ;	1234	dREQ;
1126		1235
1127	req->type = REQ_OPEN;	1236	req->type = EIO_SEEK;
1128	req->data = newSVsv (pathname);	1237	req->sv1 = newSVsv (fh);
1129	req->dataptr = SvPVbyte_nolen (req->data);	1238	req->int1 = fd;
1130	req->fd = flags;	1239	req->offs = SvVAL64 (offset);
1131	req->mode = mode;	1240	req->int2 = whence;
1132		1241
1133	REQ_SEND;	1242	REQ_SEND;
1134	}	1243	}
1135		1244
1136	void	1245	void
1137	aio_close (fh,callback=&PL_sv_undef)	1246	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$
1141	ALIAS:	1247	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC
1145	PPCODE:
1146	{
1147	dREQ;
1148
1149	req->type = ix;
1150	req->fh = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152
1153	REQ_SEND (req);
1154	}
1155
1156	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:
1165	aio_read = REQ_READ	1248	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	1249	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$
1168	PPCODE:	1250	PPCODE:
1169	{	1251	{
1170	aio_req req;
1171	STRLEN svlen;	1252	STRLEN svlen;
		1253	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	1254	char *svptr = SvPVbyte (data, svlen);
1173		1255	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		1256
1177	if (dataoffset < 0)	1257	if (dataoffset < 0)
1178	dataoffset += svlen;	1258	dataoffset += svlen;
1179		1259
1180	if (dataoffset < 0 || dataoffset > svlen)	1260	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	1261	croak ("dataoffset outside of data scalar");
1182		1262
1183	if (ix == REQ_WRITE)	1263	if (ix == EIO_WRITE)
1184	{	1264	{
1185	/* write: check length and adjust. */	1265	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	1266	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	1267	len = svlen - dataoffset;
1188	}	1268	}
1189	else	1269	else
1190	{	1270	{
1191	/* read: grow scalar as necessary */	1271	/* read: check type and grow scalar as necessary */
		1272	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1192	svptr = SvGROW (data, length + dataoffset);	1273	svptr = sv_grow (data, len + dataoffset + 1);
		1274	else if (SvCUR (data) < len + dataoffset)
		1275	croak ("length + dataoffset outside of scalar, and cannot grow");
1193	}	1276	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		1277
1198	{	1278	{
1199	dREQ;	1279	dREQ;
1200		1280
1201	req->type = ix;	1281	req->type = ix;
1202	req->fh = newSVsv (fh);	1282	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1283	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	1284	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	1285	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	1286	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1287	req->ptr2 = (char *)svptr + dataoffset;
		1288	req->stroffset = dataoffset;
1209		1289
1210	if (!SvREADONLY (data))	1290	if (!SvREADONLY (data))
1211	{	1291	{
1212	SvREADONLY_on (data);	1292	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1293	req->flags |= FLAG_SV2_RO_OFF;
1214	}	1294	}
1215		1295
1216	REQ_SEND;	1296	REQ_SEND;
1217	}	1297	}
1218	}	1298	}
1219		1299
1220	void	1300	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1301	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1222	SV * out_fh	1302	ALIAS:
1223	SV * in_fh	1303	aio_ioctl = EIO_IOCTL
1224	UV in_offset	1304	aio_fcntl = EIO_FCNTL
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$
1228	PPCODE:	1305	PPCODE:
1229	{	1306	{
1230	dREQ;	1307	int fd = s_fileno_croak (fh, 0);
		1308	char *svptr;
1231		1309
1232	req->type = REQ_SENDFILE;	1310	if (SvPOK (arg) || !SvNIOK (arg))
1233	req->fh = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1235	req->fh2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1237	req->offset = in_offset;
1238	req->length = length;
1239
1240	REQ_SEND;
1241	}
1242
1243	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$
1250	PPCODE:
1251	{
1252	dREQ;
1253
1254	req->type = REQ_READAHEAD;
1255	req->fh = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1257	req->offset = offset;
1258	req->length = length;
1259
1260	REQ_SEND;
1261	}
1262
1263	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:
1268	aio_stat = REQ_STAT
1269	aio_lstat = REQ_LSTAT
1270	PPCODE:
1271	{
1272	dREQ;
1273
1274	New (0, req->statdata, 1, Stat_t);
1275	if (!req->statdata)
1276	{	1311	{
1277	req_free (req);	1312	STRLEN svlen;
1278	croak ("out of memory during aio_req->statdata allocation");	1313	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1279	}	1314	#ifdef IOCPARM_LEN
		1315	STRLEN need = IOCPARM_LEN (request);
		1316	#else
		1317	STRLEN need = 256;
		1318	#endif
1280		1319
1281	if (SvPOK (fh_or_path))	1320	if (svlen < need)
1282	{	1321	svptr = SvGROW (arg, need);
1283	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);
1286	}	1322	}
1287	else	1323	else
		1324	svptr = (char *)SvIV (arg);
		1325
1288	{	1326	{
		1327	dREQ;
		1328
1289	req->type = REQ_FSTAT;	1329	req->type = ix;
1290	req->fh = newSVsv (fh_or_path);	1330	req->sv1 = newSVsv (fh);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1331	req->int1 = fd;
		1332	req->int2 = (long)request;
		1333	req->sv2 = SvREFCNT_inc (arg);
		1334	req->ptr2 = svptr;
		1335
		1336	REQ_SEND;
1292	}	1337	}
		1338	}
		1339
		1340	void
		1341	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1342	ALIAS:
		1343	aio_readlink = EIO_READLINK
		1344	aio_realpath = EIO_REALPATH
		1345	PPCODE:
		1346	{
		1347	dREQ;
		1348
		1349	req->type = ix;
		1350	req_set_path1 (req, pathname);
1293		1351
1294	REQ_SEND;	1352	REQ_SEND;
1295	}	1353	}
1296		1354
1297	void	1355	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1356	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1299	SV * pathname	1357	PPCODE:
1300	SV * callback	1358	{
		1359	int ifd = s_fileno_croak (in_fh , 0);
		1360	int ofd = s_fileno_croak (out_fh, 1);
		1361	dREQ;
		1362
		1363	req->type = EIO_SENDFILE;
		1364	req->sv1 = newSVsv (out_fh);
		1365	req->int1 = ofd;
		1366	req->sv2 = newSVsv (in_fh);
		1367	req->int2 = ifd;
		1368	req->offs = in_offset;
		1369	req->size = length;
		1370
		1371	REQ_SEND;
		1372	}
		1373
		1374	void
		1375	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1376	PPCODE:
		1377	{
		1378	int fd = s_fileno_croak (fh, 0);
		1379	dREQ;
		1380
		1381	req->type = EIO_READAHEAD;
		1382	req->sv1 = newSVsv (fh);
		1383	req->int1 = fd;
		1384	req->offs = offset;
		1385	req->size = length;
		1386
		1387	REQ_SEND;
		1388	}
		1389
		1390	void
		1391	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1301	ALIAS:	1392	ALIAS:
		1393	aio_stat = EIO_STAT
		1394	aio_lstat = EIO_LSTAT
		1395	aio_statvfs = EIO_STATVFS
		1396	PPCODE:
		1397	{
		1398	dREQ;
		1399
		1400	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	UV
		1406	major (UV dev)
		1407	ALIAS:
		1408	minor = 1
		1409	CODE:
		1410	RETVAL = ix ? minor (dev) : major (dev);
		1411	OUTPUT:
		1412	RETVAL
		1413
		1414	UV
		1415	makedev (UV maj, UV min)
		1416	CODE:
		1417	RETVAL = makedev (maj, min);
		1418	OUTPUT:
		1419	RETVAL
		1420
		1421	void
		1422	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1423	PPCODE:
		1424	{
		1425	dREQ;
		1426
		1427	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1428	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1429	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1430
		1431	REQ_SEND;
		1432	}
		1433
		1434	void
		1435	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1436	PPCODE:
		1437	{
		1438	dREQ;
		1439
		1440	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1441	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1442
		1443	REQ_SEND;
		1444	}
		1445
		1446	void
		1447	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1448	PPCODE:
		1449	{
		1450	dREQ;
		1451
		1452	req->int2 = mode;
		1453	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1454
		1455	REQ_SEND;
		1456	}
		1457
		1458	void
		1459	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1460	PPCODE:
		1461	{
		1462	dREQ;
		1463
		1464	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1465	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1466	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1467
		1468	REQ_SEND;
		1469	}
		1470
		1471	void
		1472	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1473	PPCODE:
		1474	{
		1475	dREQ;
		1476
		1477	req->type = EIO_READDIR;
		1478	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1479
		1480	if (flags & EIO_READDIR_DENTS)
		1481	req->int1 |= EIO_READDIR_CUSTOM2;
		1482
		1483	req_set_path1 (req, pathname);
		1484
		1485	REQ_SEND;
		1486	}
		1487
		1488	void
		1489	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1490	PPCODE:
		1491	{
		1492	dREQ;
		1493
		1494	req->type = EIO_MKDIR;
		1495	req->int2 = mode;
		1496	req_set_path1 (req, pathname);
		1497
		1498	REQ_SEND;
		1499	}
		1500
		1501	void
		1502	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1503	ALIAS:
1302	aio_unlink = REQ_UNLINK	1504	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1505	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1506	aio_readdir = EIO_READDIR
1305	PPCODE:	1507	PPCODE:
1306	{	1508	{
1307	dREQ;	1509	dREQ;
1308		1510
1309	req->type = ix;	1511	req->type = ix;
1310	req->data = newSVsv (pathname);	1512	req_set_path1 (req, pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1513
1312
1313	REQ_SEND;	1514	REQ_SEND;
1314	}	1515	}
1315		1516
1316	void	1517	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1518	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1519	ALIAS:
1322	aio_link = REQ_LINK	1520	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1521	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1522	aio_rename = EIO_RENAME
1325	PPCODE:	1523	PPCODE:
1326	{	1524	{
		1525	eio_wd wd2 = 0;
1327	dREQ;	1526	dREQ;
1328		1527
1329	req->type = ix;	1528	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1529	req_set_path1 (req, oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1530	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1332	req->data = newSVsv (newpath);	1531	req->int3 = (long)wd2;
1333	req->dataptr = SvPVbyte_nolen (req->data);
1334		1532
1335	REQ_SEND;	1533	REQ_SEND;
1336	}	1534	}
1337		1535
1338	void	1536	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1537	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1538	PPCODE:
1343	{	1539	{
1344	dREQ;	1540	dREQ;
1345		1541
1346	req->type = REQ_BUSY;	1542	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1543	req->int2 = (mode_t)mode;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1544	req->offs = dev;
1349		1545	req_set_path1 (req, pathname);
		1546
1350	REQ_SEND;	1547	REQ_SEND;
1351	}	1548	}
1352		1549
1353	void	1550	void
		1551	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
		1552	ALIAS:
		1553	aio_mtouch = EIO_MTOUCH
		1554	aio_msync = EIO_MSYNC
		1555	PPCODE:
		1556	{
		1557	STRLEN svlen;
		1558	char *svptr = SvPVbyte (data, svlen);
		1559	UV len = SvUV (length);
		1560
		1561	if (offset < 0)
		1562	offset += svlen;
		1563
		1564	if (offset < 0 || offset > svlen)
		1565	croak ("offset outside of scalar");
		1566
		1567	if (!SvOK (length) || len + offset > svlen)
		1568	len = svlen - offset;
		1569
		1570	{
		1571	dREQ;
		1572
		1573	req->type = ix;
		1574	req->sv2 = SvREFCNT_inc (data);
		1575	req->ptr2 = (char *)svptr + offset;
		1576	req->size = len;
		1577	req->int1 = flags;
		1578
		1579	REQ_SEND;
		1580	}
		1581	}
		1582
		1583	void
		1584	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	STRLEN svlen;
		1588	char *svptr = SvPVbyte (data, svlen);
		1589	UV len = SvUV (length);
		1590
		1591	if (offset < 0)
		1592	offset += svlen;
		1593
		1594	if (offset < 0 || offset > svlen)
		1595	croak ("offset outside of scalar");
		1596
		1597	if (!SvOK (length) || len + offset > svlen)
		1598	len = svlen - offset;
		1599
		1600	{
		1601	dREQ;
		1602
		1603	req->type = EIO_MLOCK;
		1604	req->sv2 = SvREFCNT_inc (data);
		1605	req->ptr2 = (char *)svptr + offset;
		1606	req->size = len;
		1607
		1608	REQ_SEND;
		1609	}
		1610	}
		1611
		1612	void
		1613	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1614	PPCODE:
		1615	{
		1616	dREQ;
		1617
		1618	req->type = EIO_MLOCKALL;
		1619	req->int1 = flags;
		1620
		1621	REQ_SEND;
		1622	}
		1623
		1624	void
		1625	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1626	PPCODE:
		1627	{
		1628	int fd = s_fileno_croak (fh, 0);
		1629	dREQ;
		1630
		1631	req->type = EIO_CUSTOM;
		1632	req->sv1 = newSVsv (fh);
		1633	req->int1 = fd;
		1634
		1635	req->feed = fiemap;
		1636	#if HAVE_FIEMAP
		1637	/* keep our fingers crossed that the next two types are 64 bit */
		1638	req->offs = start;
		1639	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1640	req->int2 = flags;
		1641	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1642	#endif
		1643
		1644	REQ_SEND;
		1645	}
		1646
		1647	void
		1648	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1649	PPCODE:
		1650	{
		1651	dREQ;
		1652
		1653	req->type = EIO_BUSY;
		1654	req->nv1 = delay < 0. ? 0. : delay;
		1655
		1656	REQ_SEND;
		1657	}
		1658
		1659	void
1354	aio_group (callback=&PL_sv_undef)	1660	aio_group (SV *callback = &PL_sv_undef)
1355	SV * callback	1661	PPCODE:
		1662	{
		1663	dREQ;
		1664
		1665	req->type = EIO_GROUP;
		1666
		1667	PUTBACK;
		1668	req_submit (req);
		1669	SPAGAIN;
		1670
		1671	XPUSHs (req_sv (req, aio_grp_stash));
		1672	}
		1673
		1674	void
		1675	aio_nop (SV *callback = &PL_sv_undef)
		1676	ALIAS:
		1677	aio_nop = EIO_NOP
		1678	aio_sync = EIO_SYNC
		1679	PPCODE:
		1680	{
		1681	dREQ;
		1682
		1683	req->type = ix;
		1684
		1685	REQ_SEND;
		1686	}
		1687
		1688	int
		1689	aioreq_pri (int pri = NO_INIT)
		1690	CODE:
		1691	RETVAL = next_pri;
		1692	if (items > 0)
		1693	{
		1694	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1695	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1696	next_pri = pri;
		1697	}
		1698	OUTPUT:
		1699	RETVAL
		1700
		1701	void
		1702	aioreq_nice (int nice = 0)
		1703	CODE:
		1704	nice = next_pri - nice;
		1705	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1706	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1707	next_pri = nice;
		1708
		1709	void
		1710	flush ()
		1711	CODE:
		1712	while (eio_nreqs ())
		1713	{
		1714	poll_wait ();
		1715	poll_cb ();
		1716	}
		1717
		1718	int
		1719	poll ()
		1720	CODE:
		1721	poll_wait ();
		1722	RETVAL = poll_cb ();
		1723	OUTPUT:
		1724	RETVAL
		1725
		1726	int
		1727	poll_fileno ()
		1728	CODE:
		1729	RETVAL = s_epipe_fd (&respipe);
		1730	OUTPUT:
		1731	RETVAL
		1732
		1733	int
		1734	poll_cb (...)
		1735	PROTOTYPE:
		1736	CODE:
		1737	RETVAL = poll_cb ();
		1738	OUTPUT:
		1739	RETVAL
		1740
		1741	void
		1742	poll_wait ()
		1743	CODE:
		1744	poll_wait ();
		1745
		1746	int
		1747	nreqs ()
		1748	CODE:
		1749	RETVAL = eio_nreqs ();
		1750	OUTPUT:
		1751	RETVAL
		1752
		1753	int
		1754	nready ()
		1755	CODE:
		1756	RETVAL = eio_nready ();
		1757	OUTPUT:
		1758	RETVAL
		1759
		1760	int
		1761	npending ()
		1762	CODE:
		1763	RETVAL = eio_npending ();
		1764	OUTPUT:
		1765	RETVAL
		1766
		1767	int
		1768	nthreads ()
		1769	CODE:
		1770	RETVAL = eio_nthreads ();
		1771	OUTPUT:
		1772	RETVAL
		1773
		1774	int
		1775	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1776	CODE:
		1777	RETVAL = posix_fadvise (fh, offset, length, advice);
		1778	OUTPUT:
		1779	RETVAL
		1780
		1781	IV
		1782	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1783	CODE:
		1784	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1785	OUTPUT:
		1786	RETVAL
		1787
		1788	void
		1789	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1790	PPCODE:
		1791	sv_unmagic (scalar, MMAP_MAGIC);
		1792	{
		1793	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1794	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1795	if (addr == (void *)-1)
		1796	XSRETURN_NO;
		1797
		1798	sv_force_normal (scalar);
		1799
		1800	/* we store the length in mg_obj, as namlen is I32 :/ */
		1801	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1802	->mg_obj = (SV *)length;
		1803
		1804	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1805
		1806	if (!(prot & PROT_WRITE))
		1807	SvREADONLY_on (scalar);
		1808
		1809	if (SvLEN (scalar))
		1810	Safefree (SvPVX (scalar));
		1811
		1812	SvPVX (scalar) = (char *)addr;
		1813	SvCUR_set (scalar, length);
		1814	SvLEN_set (scalar, 0);
		1815	SvPOK_only (scalar);
		1816
		1817	XSRETURN_YES;
		1818	}
		1819
		1820	void
		1821	munmap (SV *scalar)
		1822	CODE:
		1823	sv_unmagic (scalar, MMAP_MAGIC);
		1824
		1825	int
		1826	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1827	ALIAS:
		1828	mprotect = 1
		1829	CODE:
		1830	{
		1831	STRLEN svlen;
		1832	void *addr = SvPVbyte (scalar, svlen);
		1833	STRLEN len = SvUV (length);
		1834
		1835	if (offset < 0)
		1836	offset += svlen;
		1837
		1838	if (offset < 0 || offset > svlen)
		1839	croak ("offset outside of scalar");
		1840
		1841	if (!SvOK (length) || len + offset > svlen)
		1842	len = svlen - offset;
		1843
		1844	addr = (void *)(((intptr_t)addr) + offset);
		1845	eio_page_align (&addr, &len);
		1846
		1847	switch (ix)
		1848	{
		1849	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1850	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1851	}
		1852	}
		1853	OUTPUT:
		1854	RETVAL
		1855
		1856	int
		1857	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1858	CODE:
		1859	{
		1860	STRLEN svlen;
		1861	void *addr = SvPVbyte (scalar, svlen);
		1862	size_t len = SvUV (length);
		1863
		1864	if (offset < 0)
		1865	offset += svlen;
		1866
		1867	if (offset < 0 || offset > svlen)
		1868	croak ("offset outside of scalar");
		1869
		1870	if (!SvOK (length) || len + offset > svlen)
		1871	len = svlen - offset;
		1872
		1873	addr = (void *)(((intptr_t)addr) + offset);
		1874	eio_page_align (&addr, &len);
		1875	#if _POSIX_MEMLOCK_RANGE
		1876	RETVAL = munlock (addr, len);
		1877	#else
		1878	RETVAL = EIO_ENOSYS ();
		1879	#endif
		1880	}
		1881	OUTPUT:
		1882	RETVAL
		1883
		1884	int
		1885	munlockall ()
		1886	CODE:
		1887	#if _POSIX_MEMLOCK
		1888	munlockall ();
		1889	#else
		1890	RETVAL = EIO_ENOSYS ();
		1891	#endif
		1892	OUTPUT:
		1893	RETVAL
		1894
		1895	int
		1896	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1897	CODE:
		1898	{
		1899	#if HAVE_LINUX_SPLICE
		1900	loff_t off_in_, off_out_;
		1901	RETVAL = splice (
		1902	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1903	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1904	length, flags
		1905	);
		1906	#else
		1907	RETVAL = EIO_ENOSYS ();
		1908	#endif
		1909	}
		1910	OUTPUT:
		1911	RETVAL
		1912
		1913	int
		1914	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1915	CODE:
		1916	#if HAVE_LINUX_SPLICE
		1917	RETVAL = tee (rfh, wfh, length, flags);
		1918	#else
		1919	RETVAL = EIO_ENOSYS ();
		1920	#endif
		1921	OUTPUT:
		1922	RETVAL
		1923
		1924	int
		1925	pipesize (aio_rfd rfh, int new_size = -1)
		1926	PROTOTYPE: $;$
		1927	CODE:
		1928	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1929	if (new_size >= 0)
		1930	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1931	else
		1932	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1933	#else
		1934	errno = ENOSYS;
		1935	RETVAL = -1;
		1936	#endif
		1937	OUTPUT:
		1938	RETVAL
		1939
		1940	void
		1941	pipe2 (int flags = 0)
1356	PROTOTYPE: ;$	1942	PROTOTYPE: ;$
1357	PPCODE:	1943	PPCODE:
1358	{	1944	{
1359	dREQ;	1945	int fd[2];
		1946	int res;
1360		1947
1361	req->type = REQ_GROUP;	1948	if (flags)
1362	req_send (req);	1949	#if HAVE_PIPE2
		1950	res = pipe2 (fd, flags);
		1951	#else
		1952	res = (errno = ENOSYS, -1);
		1953	#endif
		1954	else
		1955	res = pipe (fd);
1363		1956
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1957	if (!res)
		1958	{
		1959	EXTEND (SP, 2);
		1960	PUSHs (newmortalFH (fd[0], O_RDONLY));
		1961	PUSHs (newmortalFH (fd[1], O_WRONLY));
		1962	}
1365	}	1963	}
1366		1964
1367	void	1965	void _on_next_submit (SV *cb)
1368	aio_nop (callback=&PL_sv_undef)
1369	SV * callback
1370	PPCODE:
1371	{
1372	dREQ;
1373
1374	req->type = REQ_NOP;
1375
1376	REQ_SEND;
1377	}
1378
1379	void
1380	aioreq_pri (int pri = DEFAULT_PRI)
1381	CODE:
1382	if (pri < PRI_MIN) pri = PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;
1384	next_pri = pri + PRI_BIAS;
1385
1386	void
1387	aioreq_nice (int nice = 0)
1388	CODE:
1389	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;
1392	next_pri = nice + PRI_BIAS;
1393
1394	void
1395	flush ()
1396	PROTOTYPE:
1397	CODE:	1966	CODE:
1398	while (nreqs)	1967	SvREFCNT_dec (on_next_submit);
1399	{	1968	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1400	poll_wait ();
1401	poll_cb (0);
1402	}
1403		1969
		1970	PROTOTYPES: DISABLE
		1971
		1972	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1973
		1974	BOOT:
		1975	{
		1976	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1977	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1978	}
		1979
1404	void	1980	void
1405	poll()	1981	DESTROY (SV *self)
1406	PROTOTYPE:
1407	CODE:	1982	CODE:
1408	if (nreqs)	1983	{
		1984	aio_wd wd = SvAIO_WD (self);
		1985	#if HAVE_AT
1409	{	1986	{
1410	poll_wait ();	1987	SV *callback = &PL_sv_undef;
1411	poll_cb (0);	1988	dREQ; /* clobbers next_pri :/ */
		1989	next_pri = req->pri; /* restore next_pri */
		1990	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1991	req->type = EIO_WD_CLOSE;
		1992	req->wd = wd;
		1993	REQ_SEND;
1412	}	1994	}
1413		1995	#else
1414	int	1996	eio_wd_close_sync (wd);
1415	poll_fileno()	1997	#endif
1416	PROTOTYPE:	1998	}
1417	CODE:
1418	RETVAL = respipe [0];
1419	OUTPUT:
1420	RETVAL
1421
1422	int
1423	poll_cb(...)
1424	PROTOTYPE:
1425	CODE:
1426	RETVAL = poll_cb (0);
1427	OUTPUT:
1428	RETVAL
1429
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:
1436	RETVAL
1437
1438	void
1439	poll_wait()
1440	PROTOTYPE:
1441	CODE:
1442	if (nreqs)
1443	poll_wait ();
1444
1445	int
1446	nreqs()
1447	PROTOTYPE:
1448	CODE:
1449	RETVAL = nreqs;
1450	OUTPUT:
1451	RETVAL
1452
1453	PROTOTYPES: DISABLE
1454		1999
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2000	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		2001
1457	void	2002	void
1458	cancel (aio_req_ornot req)	2003	cancel (aio_req_ornot req)
1459	CODE:	2004	CODE:
1460	req_cancel (req);	2005	eio_cancel (req);
1461		2006
1462	void	2007	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2008	cb (aio_req_ornot req, SV *callback = NO_INIT)
1464	CODE:	2009	PPCODE:
		2010	{
		2011	if (GIMME_V != G_VOID)
		2012	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2013
		2014	if (items > 1)
		2015	{
		2016	SV *cb_cv = get_cb (callback);
		2017
1465	SvREFCNT_dec (req->callback);	2018	SvREFCNT_dec (req->callback);
1466	req->callback = newSVsv (callback);	2019	req->callback = SvREFCNT_inc (cb_cv);
		2020	}
		2021	}
1467		2022
1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2023	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469		2024
1470	void	2025	void
1471	add (aio_req grp, ...)	2026	add (aio_req grp, ...)
1472	PPCODE:	2027	PPCODE:
1473	{	2028	{
1474	int i;	2029	int i;
1475	aio_req req;
1476		2030
1477	if (grp->fd == 2)	2031	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2032	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		2033
1480	for (i = 1; i < items; ++i )	2034	for (i = 1; i < items; ++i )
1481	{	2035	{
		2036	aio_req req;
		2037
1482	if (GIMME_V != G_VOID)	2038	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2039	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		2040
1485	req = SvAIO_REQ (ST (i));	2041	req = SvAIO_REQ (ST (i));
1486		2042
1487	if (req)	2043	if (req)
1488	{	2044	eio_grp_add (grp, req);
1489	++grp->length;
1490	req->grp = grp;
1491
1492	req->grp_prev = 0;
1493	req->grp_next = grp->grp_first;
1494
1495	if (grp->grp_first)
1496	grp->grp_first->grp_prev = req;
1497
1498	grp->grp_first = req;
1499	}
1500	}	2045	}
1501	}	2046	}
1502		2047
1503	void	2048	void
1504	cancel_subs (aio_req_ornot req)	2049	cancel_subs (aio_req_ornot req)
…		…
1508	void	2053	void
1509	result (aio_req grp, ...)	2054	result (aio_req grp, ...)
1510	CODE:	2055	CODE:
1511	{	2056	{
1512	int i;	2057	int i;
		2058	AV *av;
		2059
		2060	grp->errorno = errno;
		2061
1513	AV *av = newAV ();	2062	av = newAV ();
		2063	av_extend (av, items - 1);
1514		2064
1515	for (i = 1; i < items; ++i )	2065	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	2066	av_push (av, newSVsv (ST (i)));
1517		2067
1518	SvREFCNT_dec (grp->data);	2068	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	2069	grp->sv1 = (SV *)av;
1520	}	2070	}
		2071
		2072	void
		2073	errno (aio_req grp, int errorno = errno)
		2074	CODE:
		2075	grp->errorno = errorno;
1521		2076
1522	void	2077	void
1523	limit (aio_req grp, int limit)	2078	limit (aio_req grp, int limit)
1524	CODE:	2079	CODE:
1525	grp->fd2 = limit;	2080	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		2081
1528	void	2082	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	2083	feed (aio_req grp, SV *callback = &PL_sv_undef)
1530	CODE:	2084	CODE:
1531	{	2085	{
1532	SvREFCNT_dec (grp->fh2);	2086	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	2087	grp->sv2 = newSVsv (callback);
		2088	grp->feed = aio_grp_feed;
1534		2089
1535	if (grp->fd2 <= 0)	2090	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	2091	grp->int2 = 2;
1537		2092
1538	aio_grp_feed (grp);	2093	eio_grp_limit (grp, grp->int2);
1539	}	2094	}
1540		2095

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