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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC vs.
Revision 1.210 by root, Fri Apr 6 11:39:25 2012 UTC

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

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