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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.82 by root, Fri Oct 27 20:11:58 2006 UTC vs.
Revision 1.150 by root, Wed Jul 1 08:11:24 2009 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"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	16	#include <sched.h>
32		17
33	#if HAVE_SENDFILE	18	/* perl namespace pollution */
34	# if __linux	19	#undef VERSION
35	# include <sys/sendfile.h>	20
36	# elif __freebsd	21	#ifdef _WIN32
37	# include <sys/socket.h>	22
38	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	24	# undef malloc
40	# include <sys/socket.h>	25	# undef free
41	# elif __solaris /* not yet */	26
42	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
43	# else	59	#else
44	# error sendfile support requested but not available	60
45	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
46	#endif	68	#endif
47		69
48	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
49	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
50	# define NAME_MAX 4096	72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
51	#endif	87	#endif
52		88
53	#ifndef PTHREAD_STACK_MIN	89	/*****************************************************************************/
54	/* care for broken platforms, e.g. windows */	90
55	# define PTHREAD_STACK_MIN 16384	91	#if __GNUC__ >= 3
		92	# define expect(expr,value) __builtin_expect ((expr),(value))
		93	#else
		94	# define expect(expr,value) (expr)
56	#endif	95	#endif
57		96
58	#if __ia64	97	#define expect_false(expr) expect ((expr) != 0, 0)
59	# define STACKSIZE 65536	98	#define expect_true(expr) expect ((expr) != 0, 1)
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65		99
66	/* wether word reads are potentially non-atomic.	100	/*****************************************************************************/
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif
76	#endif
77		101
78	/* buffer size for various temporary buffers */	102	static HV *stash;
79	#define AIO_BUFSIZE 65536	103	typedef SV SV8; /* byte-sv, used for argument-checking */
80		104	typedef int aio_rfd; /* read file desriptor */
81	#define dBUF \	105	typedef int aio_wfd; /* write file descriptor */
82	char *aio_buf; \
83	LOCK (wrklock); \
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \
86	if (!aio_buf) \
87	return -1;
88
89	enum {
90	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_MKNOD, REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};
102		106
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		109
106	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;	111	SV *callback; \
111	SV *fh, *fh2;	112	SV *sv1, *sv2; \
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;	113	STRLEN stroffset; \
119	int type;	114	SV *self;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123		115
124	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
125	unsigned char pri;
126		117
127	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
129	} aio_cb;	120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	# define NO_FADVISE 1
		123	#endif
		124
		125	#ifndef POSIX_FADV_SEQUENTIAL
		126	# define POSIX_FADV_SEQUENTIAL 0
		127	#endif
		128
		129	#ifndef POSIX_FADV_RANDOM
		130	# define POSIX_FADV_RANDOM 0
		131	#endif
		132
		133	#ifndef POSIX_FADV_NOREUSE
		134	# define POSIX_FADV_NOREUSE 0
		135	#endif
		136
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	static int req_invoke (eio_req *req);
		146	#define EIO_FINISH(req) req_invoke (req)
		147	static void req_destroy (eio_req *grp);
		148	#define EIO_DESTROY(req) req_destroy (req)
130		149
131	enum {	150	enum {
132	FLAG_CANCELLED = 0x01,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
133	};	152	};
134		153
		154	#include "libeio/eio.c"
		155
135	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
137		158
138	enum {	159	static SV *on_next_submit;
139	PRI_MIN = -4,	160	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	161	static int max_outstanding;
141		162
142	DEFAULT_PRI = 0,	163	static int respipe_osf [2], respipe [2] = { -1, -1 };
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		164
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker *prev, *next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{
181	closedir (wrk->dirp);
182	wrk->dirp = 0;
183	}
184
185	if (wrk->dbuf)
186	{
187	free (wrk->dbuf);
188	wrk->dbuf = 0;
189	}
190	}
191
192	static void worker_free (worker *wrk)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;
274
275	--q->size;
276
277	for (pri = NUM_PRI; pri--; )
278	{
279	aio_req req = q->qs[pri];
280
281	if (req)
282	{
283	if (!(q->qs[pri] = req->next))
284	q->qe[pri] = 0;
285
286	return req;
287	}
288	}
289
290	abort ();
291	}
292
293	static int poll_cb (int max);
294	static void req_invoke (aio_req req);
295	static void req_free (aio_req req);	165	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	166	static void req_cancel (aio_req req);
		167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	char buf [4];
		178	while (respipe_read (respipe [0], buf, 4) == 4)
		179	;
		180	}
297		181
298	/* must be called at most once */	182	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
300	{	184	{
301	if (!req->self)	185	if (!req->self)
…		…
319	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	204	}
321		205
322	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
323	{	207	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	208	if (grp->sv2 && SvOK (grp->sv2))
325	{	209	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	210	dSP;
331		211
332	ENTER;	212	ENTER;
333	SAVETMPS;	213	SAVETMPS;
334	PUSHMARK (SP);	214	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
336	PUTBACK;	216	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	218	SPAGAIN;
339	FREETMPS;	219	FREETMPS;
340	LEAVE;	220	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	221	}
351	}	222	}
352		223
353	static void aio_grp_dec (aio_req grp)	224	static void req_submit (eio_req *req)
354	{	225	{
355	--grp->length;	226	eio_submit (req);
356		227
357	/* call feeder, if applicable */	228	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	229	{
363	req_invoke (grp);	230	dSP;
364	req_free (grp);	231	SV *cb = sv_2mortal (on_next_submit);
		232
		233	on_next_submit = 0;
		234
		235	PUSHMARK (SP);
		236	PUTBACK;
		237	call_sv (cb, G_DISCARD | G_EVAL);
365	}	238	}
366	}	239	}
367		240
368	static void req_invoke (aio_req req)	241	static int req_invoke (eio_req *req)
369	{	242	{
370	dSP;	243	dSP;
371		244
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	245	if (req->flags & FLAG_SV2_RO_OFF)
		246	SvREADONLY_off (req->sv2);
		247
		248	if (!EIO_CANCELLED (req) && req->callback)
373	{	249	{
374	ENTER;	250	ENTER;
375	SAVETMPS;	251	SAVETMPS;
376	PUSHMARK (SP);	252	PUSHMARK (SP);
377	EXTEND (SP, 1);	253	EXTEND (SP, 1);
378		254
379	switch (req->type)	255	switch (req->type)
380	{	256	{
381	case REQ_READDIR:	257	case EIO_READDIR:
382	{	258	{
383	SV *rv = &PL_sv_undef;	259	SV *rv = &PL_sv_undef;
384		260
385	if (req->result >= 0)	261	if (req->result >= 0)
386	{	262	{
387	int i;	263	int i;
388	char *buf = req->data2ptr;	264	char *names = (char *)req->ptr2;
		265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389	AV *av = newAV ();	266	AV *av = newAV ();
390		267
391	av_extend (av, req->result - 1);	268	av_extend (av, req->result - 1);
392		269
393	for (i = 0; i < req->result; ++i)	270	for (i = 0; i < req->result; ++i)
394	{	271	{
395	SV *sv = newSVpv (buf, 0);	272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		275
		276	if (req->int1 & EIO_READDIR_CUSTOM2)
		277	{
		278	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		279	AV *avent = newAV ();
		280
		281	av_extend (avent, 2);
		282
		283	if (!sv_type [ent->type])
		284	{
		285	sv_type [ent->type] = newSViv (ent->type);
		286	SvREADONLY_on (sv_type [ent->type]);
		287	}
		288
		289	av_store (avent, 0, namesv);
		290	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		291	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		292
		293	av_store (av, i, newRV_noinc ((SV *)avent));
		294	}
		295	else
397	av_store (av, i, sv);	296	av_store (av, i, namesv);
		297
		298	++ent;
		299	}
		300	else
		301	{
		302	SV *name = newSVpv (names, 0);
		303	av_store (av, i, name);
398	buf += SvCUR (sv) + 1;	304	names += SvCUR (name) + 1;
		305	}
399	}	306	}
400		307
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	308	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	309	}
403		310
404	PUSHs (rv);	311	PUSHs (rv);
		312
		313	if (req->int1 & EIO_READDIR_CUSTOM1)
		314	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
405	}	315	}
406	break;	316	break;
407		317
408	case REQ_OPEN:	318	case EIO_OPEN:
409	{	319	{
410	/* convert fd to fh */	320	/* convert fd to fh */
411	SV *fh;	321	SV *fh = &PL_sv_undef;
412		322
413	PUSHs (sv_2mortal (newSViv (req->result)));	323	if (req->result >= 0)
414	PUTBACK;	324	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	325	GV *gv = (GV *)sv_newmortal ();
416	SPAGAIN;	326	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		327	char sym [64];
		328	int symlen;
		329
		330	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		331	gv_init (gv, stash, sym, symlen, 0);
417		332
418	fh = SvREFCNT_inc (POPs);	333	symlen = snprintf (
		334	sym,
		335	sizeof (sym),
		336	"%s&=%d",
		337	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		338	(int)req->result
		339	);
419		340
		341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		342	fh = (SV *)gv;
		343	}
		344
420	PUSHMARK (SP);	345	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	346	}
423	break;	347	break;
424		348
425	case REQ_GROUP:	349	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	350	req->int1 = 2; /* mark group as finished */
427		351
428	if (req->data)	352	if (req->sv1)
429	{	353	{
430	int i;	354	int i;
431	AV *av = (AV *)req->data;	355	AV *av = (AV *)req->sv1;
432		356
433	EXTEND (SP, AvFILL (av) + 1);	357	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	358	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	359	PUSHs (*av_fetch (av, i, 0));
436	}	360	}
437	break;	361	break;
438		362
439	case REQ_NOP:	363	case EIO_NOP:
440	case REQ_BUSY:	364	case EIO_BUSY:
441	break;	365	break;
		366
		367	case EIO_READLINK:
		368	if (req->result > 0)
		369	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		370	break;
		371
		372	case EIO_STAT:
		373	case EIO_LSTAT:
		374	case EIO_FSTAT:
		375	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		376	PL_laststatval = req->result;
		377	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		378	PUSHs (sv_2mortal (newSViv (req->result)));
		379	break;
		380
		381	case EIO_READ:
		382	{
		383	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		384	*SvEND (req->sv2) = 0;
		385	SvPOK_only (req->sv2);
		386	SvSETMAGIC (req->sv2);
		387	PUSHs (sv_2mortal (newSViv (req->result)));
		388	}
		389	break;
		390
		391	case EIO_DUP2:
		392	if (req->result > 0)
		393	req->result = 0;
		394	/* FALLTHROUGH */
442		395
443	default:	396	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	397	PUSHs (sv_2mortal (newSViv (req->result)));
445	break;	398	break;
446	}	399	}
447		400
448	errno = req->errorno;	401	errno = req->errorno;
449		402
450	PUTBACK;	403	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	405	SPAGAIN;
453		406
454	FREETMPS;	407	FREETMPS;
455	LEAVE;	408	LEAVE;
		409
		410	PUTBACK;
456	}	411	}
457		412
458	if (req->grp)	413	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	414	}
478		415
479	static void req_free (aio_req req)	416	static void req_destroy (aio_req req)
480	{	417	{
481	if (req->self)	418	if (req->self)
482	{	419	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	420	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	421	SvREFCNT_dec (req->self);
485	}	422	}
486		423
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	424	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	425	SvREFCNT_dec (req->sv2);
490	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		427
496	Safefree (req);	428	Safefree (req);
497	}	429	}
498		430
499	static void req_cancel_subs (aio_req grp)	431	static void req_cancel_subs (aio_req grp)
500	{	432	{
501	aio_req sub;	433	aio_req sub;
502		434
503	if (grp->type != REQ_GROUP)	435	if (grp->type != EIO_GROUP)
504	return;	436	return;
505		437
506	SvREFCNT_dec (grp->fh2);	438	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	439	grp->sv2 = 0;
508		440
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	441	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	442	}
512		443
513	static void req_cancel (aio_req req)	444	#ifdef USE_SOCKETS_AS_HANDLES
514	{	445	# define TO_SOCKET(x) (win32_get_osfhandle (x))
515	req->flags |= FLAG_CANCELLED;	446	#else
516		447	# define TO_SOCKET(x) (x)
517	req_cancel_subs (req);
518	}
519
520	static void *aio_proc(void *arg);
521
522	static void start_thread (void)
523	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif	448	#endif
538		449
539	sigfillset (&fullsigset);	450	static void
		451	create_respipe (void)
		452	{
		453	int old_readfd = respipe [0];
540		454
541	LOCK (wrklock);	455	if (respipe [1] >= 0)
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	456	respipe_close (TO_SOCKET (respipe [1]));
543		457
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	458	#ifdef _WIN32
		459	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		460	#else
		461	if (pipe (respipe))
		462	#endif
		463	croak ("unable to initialize result pipe");
		464
		465	if (old_readfd >= 0)
545	{	466	{
546	wrk->prev = &wrk_first;	467	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
547	wrk->next = wrk_first.next;	468	croak ("unable to initialize result pipe(2)");
548	wrk_first.next->prev = wrk;	469
549	wrk_first.next = wrk;	470	respipe_close (respipe [0]);
550	++started;	471	respipe [0] = old_readfd;
551	}	472	}
552	else
553	free (wrk);
554		473
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);	474	#ifdef _WIN32
556	UNLOCK (wrklock);	475	int arg = 1;
557	}	476	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
558		477	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
559	static void maybe_start_thread ()	478	#else
560	{	479	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
561	#if 0	480	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif	481	#endif
		482	croak ("unable to initialize result pipe(3)");
565		483
566	if (started >= wanted)	484	respipe_osf [0] = TO_SOCKET (respipe [0]);
567	return;	485	respipe_osf [1] = TO_SOCKET (respipe [1]);
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}	486	}
592		487
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()	488	static void poll_wait (void)
638	{	489	{
639	fd_set rfd;	490	fd_set rfd;
640		491
641	while (nreqs)	492	while (eio_nreqs ())
642	{	493	{
643	int size;	494	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	495
		496	X_LOCK (reslock);
645	size = res_queue.size;	497	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	498	X_UNLOCK (reslock);
647		499
648	if (size)	500	if (size)
649	return;	501	return;
650		502
651	maybe_start_thread ();	503	etp_maybe_start_thread ();
652		504
653	FD_ZERO(&rfd);	505	FD_ZERO (&rfd);
654	FD_SET(respipe [0], &rfd);	506	FD_SET (respipe [0], &rfd);
655		507
656	select (respipe [0] + 1, &rfd, 0, 0, 0);	508	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	509	}
658	}	510	}
659		511
660	static int poll_cb (int max)	512	static int poll_cb (void)
661	{	513	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	514	for (;;)
668	{	515	{
669	while (max <= 0 || count < max)	516	int res = eio_poll ();
670	{
671	maybe_start_thread ();
672		517
673	LOCK (reslock);	518	if (res > 0)
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{
678	--npending;
679
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}
701	else
702	{
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}
723
724	if (nreqs <= max_outstanding)
725	break;	519	croak (0);
		520
		521	if (!max_outstanding || max_outstanding > eio_nreqs ())
		522	return res;
726		523
727	poll_wait ();	524	poll_wait ();
728
729	max = 0;
730	}	525	}
731
732	return count;
733	}	526	}
734		527
735	static void create_pipe ()	528	static void atfork_child (void)
736	{	529	{
737	if (pipe (respipe))	530	create_respipe ();
738	croak ("unable to initialize result pipe");
739
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741	croak ("cannot set result pipe to nonblocking mode");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}	531	}
746		532
747	/*****************************************************************************/	533	static SV *
748	/* work around various missing functions */	534	get_cb (SV *cb_sv)
749
750	#if !HAVE_PREADWRITE
751	# define pread aio_pread
752	# define pwrite aio_pwrite
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
762	{	535	{
763	ssize_t res;	536	HV *st;
764	off_t ooffset;	537	GV *gvp;
		538	CV *cv;
765		539
766	LOCK (preadwritelock);	540	if (!SvOK (cb_sv))
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;	541	return 0;
854		542
855	#if HAVE_SENDFILE	543	cv = sv_2cv (cb_sv, &st, &gvp, 0);
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858		544
859	# elif __freebsd	545	if (!cv)
860	/*	546	croak ("IO::AIO callback must be undef or a CODE reference");
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867		547
868	if (res < 0 && sbytes)	548	return (SV *)cv;
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897
898	if (res < 0
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
900	#if __solaris
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
902	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908
909	res = 0;
910
911	while (count)
912	{
913	ssize_t cnt;
914
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916
917	if (cnt <= 0)
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922
923	cnt = write (ofd, aio_buf, cnt);
924
925	if (cnt <= 0)
926	{
927	if (cnt && !res) res = -1;
928	break;
929	}
930
931	offset += cnt;
932	res += cnt;
933	count -= cnt;
934	}
935	}
936
937	return res;
938	}
939
940	/* read a full directory */
941	static void scandir_ (aio_req req, worker *self)
942	{
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char *name, *names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000
1001	/*****************************************************************************/
1002
1003	static void *aio_proc (void *thr_arg)
1004	{
1005	aio_req req;
1006	worker *self = (worker *)thr_arg;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1049
1050	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1051	case REQ_FSYNC: req->result = fsync (req->fd); break;
1052	case REQ_READDIR: scandir_ (req, self); break;
1053
1054	case REQ_BUSY:
1055	{
1056	struct timeval tv;
1057
1058	tv.tv_sec = req->fd;
1059	tv.tv_usec = req->fd2;
1060
1061	req->result = select (0, 0, 0, 0, &tv);
1062	}
1063
1064	case REQ_GROUP:
1065	case REQ_NOP:
1066	break;
1067
1068	case REQ_QUIT:
1069	LOCK (wrklock);
1070	worker_free (self);
1071	--started;
1072	UNLOCK (wrklock);
1073	return 0;
1074
1075	default:
1076	req->result = ENOSYS;
1077	break;
1078	}
1079
1080	req->errorno = errno;
1081
1082	LOCK (reslock);
1083
1084	++npending;
1085
1086	if (!reqq_push (&res_queue, req))
1087	/* write a dummy byte to the pipe so fh becomes ready */
1088	write (respipe [1], &respipe, 1);
1089
1090	self->req = 0;
1091	worker_clear (self);
1092
1093	UNLOCK (reslock);
1094	}
1095	}
1096
1097	/*****************************************************************************/
1098
1099	static void atfork_prepare (void)
1100	{
1101	LOCK (wrklock);
1102	LOCK (reqlock);
1103	LOCK (reslock);
1104	#if !HAVE_PREADWRITE
1105	LOCK (preadwritelock);
1106	#endif
1107	#if !HAVE_READDIR_R
1108	LOCK (readdirlock);
1109	#endif
1110	}
1111
1112	static void atfork_parent (void)
1113	{
1114	#if !HAVE_READDIR_R
1115	UNLOCK (readdirlock);
1116	#endif
1117	#if !HAVE_PREADWRITE
1118	UNLOCK (preadwritelock);
1119	#endif
1120	UNLOCK (reslock);
1121	UNLOCK (reqlock);
1122	UNLOCK (wrklock);
1123	}
1124
1125	static void atfork_child (void)
1126	{
1127	aio_req prv;
1128
1129	while (prv = reqq_shift (&req_queue))
1130	req_free (prv);
1131
1132	while (prv = reqq_shift (&res_queue))
1133	req_free (prv);
1134
1135	while (wrk_first.next != &wrk_first)
1136	{
1137	worker *wrk = wrk_first.next;
1138
1139	if (wrk->req)
1140	req_free (wrk->req);
1141
1142	worker_clear (wrk);
1143	worker_free (wrk);
1144	}
1145
1146	started = 0;
1147	nreqs = 0;
1148
1149	close (respipe [0]);
1150	close (respipe [1]);
1151	create_pipe ();
1152
1153	atfork_parent ();
1154	}	549	}
1155		550
1156	#define dREQ \	551	#define dREQ \
		552	SV *cb_cv; \
1157	aio_req req; \	553	aio_req req; \
1158	int req_pri = next_pri; \	554	int req_pri = next_pri; \
1159	next_pri = DEFAULT_PRI + PRI_BIAS; \	555	next_pri = EIO_PRI_DEFAULT; \
1160	\	556	\
1161	if (SvOK (callback) && !SvROK (callback)) \	557	cb_cv = get_cb (callback); \
1162	croak ("callback must be undef or of reference type"); \
1163	\	558	\
1164	Newz (0, req, 1, aio_cb); \	559	Newz (0, req, 1, eio_req); \
1165	if (!req) \	560	if (!req) \
1166	croak ("out of memory during aio_req allocation"); \	561	croak ("out of memory during eio_req allocation"); \
1167	\	562	\
1168	req->callback = newSVsv (callback); \	563	req->callback = SvREFCNT_inc (cb_cv); \
1169	req->pri = req_pri	564	req->pri = req_pri
1170		565
1171	#define REQ_SEND \	566	#define REQ_SEND \
		567	PUTBACK; \
1172	req_send (req); \	568	req_submit (req); \
		569	SPAGAIN; \
1173	\	570	\
1174	if (GIMME_V != G_VOID) \	571	if (GIMME_V != G_VOID) \
1175	XPUSHs (req_sv (req, AIO_REQ_KLASS));	572	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1176		573
		574	static int
		575	extract_fd (SV *fh, int wr)
		576	{
		577	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		578
		579	if (fd < 0)
		580	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		581
		582	return fd;
		583	}
		584
1177	MODULE = IO::AIO PACKAGE = IO::AIO	585	MODULE = IO::AIO PACKAGE = IO::AIO
1178		586
1179	PROTOTYPES: ENABLE	587	PROTOTYPES: ENABLE
1180		588
1181	BOOT:	589	BOOT:
1182	{	590	{
		591	static const struct {
		592	const char *name;
		593	IV iv;
		594	} *civ, const_iv[] = {
		595	# define const_iv(name, value) { # name, (IV) value },
		596	# define const_eio(name) { # name, (IV) EIO_ ## name },
		597	const_iv (EXDEV , EXDEV)
		598	const_iv (ENOSYS , ENOSYS)
		599	const_iv (O_RDONLY, O_RDONLY)
		600	const_iv (O_WRONLY, O_WRONLY)
		601	const_iv (O_CREAT , O_CREAT)
		602	const_iv (O_TRUNC , O_TRUNC)
		603	#ifndef _WIN32
		604	const_iv (S_IFIFO , S_IFIFO)
		605	#endif
		606	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		607	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		608	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		609	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		610	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		611	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		612
		613	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		614	const_eio (SYNC_FILE_RANGE_WRITE)
		615	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		616
		617	const_eio (READDIR_DENTS)
		618	const_eio (READDIR_DIRS_FIRST)
		619	const_eio (READDIR_STAT_ORDER)
		620	const_eio (READDIR_FOUND_UNKNOWN)
		621
		622	const_eio (DT_UNKNOWN)
		623	const_eio (DT_FIFO)
		624	const_eio (DT_CHR)
		625	const_eio (DT_DIR)
		626	const_eio (DT_BLK)
		627	const_eio (DT_REG)
		628	const_eio (DT_LNK)
		629	const_eio (DT_SOCK)
		630	const_eio (DT_WHT)
		631	};
		632
1183	HV *stash = gv_stashpv ("IO::AIO", 1);	633	stash = gv_stashpv ("IO::AIO", 1);
1184		634
1185	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	635	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1186	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	636	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1187	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1188	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1189	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1190	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1191		637
1192	create_pipe ();	638	create_respipe ();
1193	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1194		639
1195	start_thread ();	640	if (eio_init (want_poll, done_poll) < 0)
		641	croak ("IO::AIO: unable to initialise eio library");
		642
		643	/* atfork child called in fifo order, so before eio's handler */
		644	X_THREAD_ATFORK (0, 0, atfork_child);
1196	}	645	}
		646
		647	void
		648	max_poll_reqs (int nreqs)
		649	PROTOTYPE: $
		650	CODE:
		651	eio_set_max_poll_reqs (nreqs);
		652
		653	void
		654	max_poll_time (double nseconds)
		655	PROTOTYPE: $
		656	CODE:
		657	eio_set_max_poll_time (nseconds);
1197		658
1198	void	659	void
1199	min_parallel (int nthreads)	660	min_parallel (int nthreads)
1200	PROTOTYPE: $	661	PROTOTYPE: $
		662	CODE:
		663	eio_set_min_parallel (nthreads);
1201		664
1202	void	665	void
1203	max_parallel (int nthreads)	666	max_parallel (int nthreads)
1204	PROTOTYPE: $	667	PROTOTYPE: $
		668	CODE:
		669	eio_set_max_parallel (nthreads);
1205		670
1206	int	671	void
		672	max_idle (int nthreads)
		673	PROTOTYPE: $
		674	CODE:
		675	eio_set_max_idle (nthreads);
		676
		677	void
1207	max_outstanding (int maxreqs)	678	max_outstanding (int maxreqs)
1208	PROTOTYPE: $	679	PROTOTYPE: $
1209	CODE:	680	CODE:
1210	RETVAL = max_outstanding;
1211	max_outstanding = maxreqs;	681	max_outstanding = maxreqs;
1212	OUTPUT:
1213	RETVAL
1214		682
1215	void	683	void
1216	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	684	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1217	SV * pathname
1218	int flags
1219	int mode
1220	SV * callback
1221	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1222	PPCODE:	686	PPCODE:
1223	{	687	{
1224	dREQ;	688	dREQ;
1225		689
1226	req->type = REQ_OPEN;	690	req->type = EIO_OPEN;
1227	req->data = newSVsv (pathname);	691	req->sv1 = newSVsv (pathname);
1228	req->dataptr = SvPVbyte_nolen (req->data);	692	req->ptr1 = SvPVbyte_nolen (req->sv1);
1229	req->fd = flags;	693	req->int1 = flags;
1230	req->mode = mode;	694	req->int2 = mode;
1231		695
1232	REQ_SEND;	696	REQ_SEND;
1233	}	697	}
1234		698
1235	void	699	void
1236	aio_close (fh,callback=&PL_sv_undef)	700	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1237	SV * fh
1238	SV * callback
1239	PROTOTYPE: $;$	701	PROTOTYPE: $;$
1240	ALIAS:	702	ALIAS:
1241	aio_close = REQ_CLOSE
1242	aio_fsync = REQ_FSYNC	703	aio_fsync = EIO_FSYNC
1243	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = EIO_FDATASYNC
1244	PPCODE:	705	PPCODE:
1245	{	706	{
		707	int fd = extract_fd (fh, 0);
1246	dREQ;	708	dREQ;
1247		709
1248	req->type = ix;	710	req->type = ix;
1249	req->fh = newSVsv (fh);	711	req->sv1 = newSVsv (fh);
1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	712	req->int1 = fd;
1251		713
1252	REQ_SEND (req);	714	REQ_SEND (req);
1253	}	715	}
1254		716
1255	void	717	void
		718	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		719	PROTOTYPE: $$$$;$
		720	PPCODE:
		721	{
		722	int fd = extract_fd (fh, 0);
		723	dREQ;
		724
		725	req->type = EIO_SYNC_FILE_RANGE;
		726	req->sv1 = newSVsv (fh);
		727	req->int1 = fd;
		728	req->offs = offset;
		729	req->size = nbytes;
		730	req->int2 = flags;
		731
		732	REQ_SEND (req);
		733	}
		734
		735	void
		736	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		737	PROTOTYPE: $;$
		738	PPCODE:
		739	{
		740	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		741	int fd = extract_fd (fh, 0);
		742	dREQ;
		743
		744	if (close_pipe < 0)
		745	{
		746	int pipefd [2];
		747
		748	if (pipe (pipefd) < 0
		749	|| close (pipefd [1]) < 0
		750	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		751	abort (); /*D*/
		752
		753	close_pipe = pipefd [0];
		754	}
		755
		756	req->type = EIO_DUP2;
		757	req->int1 = close_pipe;
		758	req->sv2 = newSVsv (fh);
		759	req->int2 = fd;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
1256	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	765	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1257	SV * fh
1258	UV offset
1259	UV length
1260	SV * data
1261	UV dataoffset
1262	SV * callback
1263	ALIAS:	766	ALIAS:
1264	aio_read = REQ_READ	767	aio_read = EIO_READ
1265	aio_write = REQ_WRITE	768	aio_write = EIO_WRITE
1266	PROTOTYPE: $$$$$;$	769	PROTOTYPE: $$$$$;$
1267	PPCODE:	770	PPCODE:
1268	{	771	{
1269	aio_req req;
1270	STRLEN svlen;	772	STRLEN svlen;
		773	int fd = extract_fd (fh, ix == EIO_WRITE);
1271	char *svptr = SvPVbyte (data, svlen);	774	char *svptr = SvPVbyte (data, svlen);
1272		775	UV len = SvUV (length);
1273	SvUPGRADE (data, SVt_PV);
1274	SvPOK_on (data);
1275		776
1276	if (dataoffset < 0)	777	if (dataoffset < 0)
1277	dataoffset += svlen;	778	dataoffset += svlen;
1278		779
1279	if (dataoffset < 0 || dataoffset > svlen)	780	if (dataoffset < 0 || dataoffset > svlen)
1280	croak ("data offset outside of string");	781	croak ("dataoffset outside of data scalar");
1281		782
1282	if (ix == REQ_WRITE)	783	if (ix == EIO_WRITE)
1283	{	784	{
1284	/* write: check length and adjust. */	785	/* write: check length and adjust. */
1285	if (length < 0 || length + dataoffset > svlen)	786	if (!SvOK (length) || len + dataoffset > svlen)
1286	length = svlen - dataoffset;	787	len = svlen - dataoffset;
1287	}	788	}
1288	else	789	else
1289	{	790	{
1290	/* read: grow scalar as necessary */	791	/* read: check type and grow scalar as necessary */
		792	SvUPGRADE (data, SVt_PV);
1291	svptr = SvGROW (data, length + dataoffset);	793	svptr = SvGROW (data, len + dataoffset + 1);
1292	}	794	}
1293
1294	if (length < 0)
1295	croak ("length must not be negative");
1296		795
1297	{	796	{
1298	dREQ;	797	dREQ;
1299		798
1300	req->type = ix;	799	req->type = ix;
1301	req->fh = newSVsv (fh);	800	req->sv1 = newSVsv (fh);
1302	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	801	req->int1 = fd;
1303	: IoOFP (sv_2io (fh)));	802	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1304	req->offset = offset;	803	req->size = len;
1305	req->length = length;
1306	req->data = SvREFCNT_inc (data);	804	req->sv2 = SvREFCNT_inc (data);
1307	req->dataptr = (char *)svptr + dataoffset;	805	req->ptr2 = (char *)svptr + dataoffset;
		806	req->stroffset = dataoffset;
1308		807
1309	if (!SvREADONLY (data))	808	if (!SvREADONLY (data))
1310	{	809	{
1311	SvREADONLY_on (data);	810	SvREADONLY_on (data);
1312	req->data2ptr = (void *)data;	811	req->flags |= FLAG_SV2_RO_OFF;
1313	}	812	}
1314		813
1315	REQ_SEND;	814	REQ_SEND;
1316	}	815	}
1317	}	816	}
1318		817
1319	void	818	void
		819	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		820	PROTOTYPE: $$;$
		821	PPCODE:
		822	{
		823	SV *data;
		824	dREQ;
		825
		826	req->type = EIO_READLINK;
		827	req->sv1 = newSVsv (path);
		828	req->ptr1 = SvPVbyte_nolen (req->sv1);
		829
		830	REQ_SEND;
		831	}
		832
		833	void
1320	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	834	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1321	SV * out_fh
1322	SV * in_fh
1323	UV in_offset
1324	UV length
1325	SV * callback
1326	PROTOTYPE: $$$$;$	835	PROTOTYPE: $$$$;$
1327	PPCODE:	836	PPCODE:
1328	{	837	{
		838	int ifd = extract_fd (in_fh , 0);
		839	int ofd = extract_fd (out_fh, 0);
1329	dREQ;	840	dREQ;
1330		841
1331	req->type = REQ_SENDFILE;	842	req->type = EIO_SENDFILE;
1332	req->fh = newSVsv (out_fh);	843	req->sv1 = newSVsv (out_fh);
1333	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	844	req->int1 = ofd;
1334	req->fh2 = newSVsv (in_fh);	845	req->sv2 = newSVsv (in_fh);
1335	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	846	req->int2 = ifd;
1336	req->offset = in_offset;	847	req->offs = in_offset;
1337	req->length = length;	848	req->size = length;
1338		849
1339	REQ_SEND;	850	REQ_SEND;
1340	}	851	}
1341		852
1342	void	853	void
1343	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	854	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1344	SV * fh
1345	UV offset
1346	IV length
1347	SV * callback
1348	PROTOTYPE: $$$;$	855	PROTOTYPE: $$$;$
1349	PPCODE:	856	PPCODE:
1350	{	857	{
		858	int fd = extract_fd (fh, 0);
1351	dREQ;	859	dREQ;
1352		860
1353	req->type = REQ_READAHEAD;	861	req->type = EIO_READAHEAD;
1354	req->fh = newSVsv (fh);	862	req->sv1 = newSVsv (fh);
1355	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	863	req->int1 = fd;
1356	req->offset = offset;	864	req->offs = offset;
1357	req->length = length;	865	req->size = length;
1358		866
1359	REQ_SEND;	867	REQ_SEND;
1360	}	868	}
1361		869
1362	void	870	void
1363	aio_stat (fh_or_path,callback=&PL_sv_undef)	871	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1364	SV * fh_or_path
1365	SV * callback
1366	ALIAS:	872	ALIAS:
1367	aio_stat = REQ_STAT	873	aio_stat = EIO_STAT
1368	aio_lstat = REQ_LSTAT	874	aio_lstat = EIO_LSTAT
1369	PPCODE:	875	PPCODE:
1370	{	876	{
1371	dREQ;	877	dREQ;
1372		878
1373	New (0, req->statdata, 1, Stat_t);	879	req->sv1 = newSVsv (fh_or_path);
1374	if (!req->statdata)
1375	{
1376	req_free (req);
1377	croak ("out of memory during aio_req->statdata allocation");
1378	}
1379		880
1380	if (SvPOK (fh_or_path))	881	if (SvPOK (req->sv1))
1381	{	882	{
1382	req->type = ix;	883	req->type = ix;
1383	req->data = newSVsv (fh_or_path);
1384	req->dataptr = SvPVbyte_nolen (req->data);	884	req->ptr1 = SvPVbyte_nolen (req->sv1);
1385	}	885	}
1386	else	886	else
1387	{	887	{
1388	req->type = REQ_FSTAT;	888	req->type = EIO_FSTAT;
1389	req->fh = newSVsv (fh_or_path);
1390	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1391	}	890	}
1392		891
1393	REQ_SEND;	892	REQ_SEND;
1394	}	893	}
1395		894
1396	void	895	void
		896	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		897	PPCODE:
		898	{
		899	dREQ;
		900
		901	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		902	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		903	req->sv1 = newSVsv (fh_or_path);
		904
		905	if (SvPOK (req->sv1))
		906	{
		907	req->type = EIO_UTIME;
		908	req->ptr1 = SvPVbyte_nolen (req->sv1);
		909	}
		910	else
		911	{
		912	req->type = EIO_FUTIME;
		913	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		914	}
		915
		916	REQ_SEND;
		917	}
		918
		919	void
		920	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		921	PPCODE:
		922	{
		923	dREQ;
		924
		925	req->sv1 = newSVsv (fh_or_path);
		926	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		927
		928	if (SvPOK (req->sv1))
		929	{
		930	req->type = EIO_TRUNCATE;
		931	req->ptr1 = SvPVbyte_nolen (req->sv1);
		932	}
		933	else
		934	{
		935	req->type = EIO_FTRUNCATE;
		936	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		937	}
		938
		939	REQ_SEND;
		940	}
		941
		942	void
		943	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		944	ALIAS:
		945	aio_chmod = EIO_CHMOD
		946	aio_mkdir = EIO_MKDIR
		947	PPCODE:
		948	{
		949	dREQ;
		950
		951	req->int2 = mode;
		952	req->sv1 = newSVsv (fh_or_path);
		953
		954	if (SvPOK (req->sv1))
		955	{
		956	req->type = ix;
		957	req->ptr1 = SvPVbyte_nolen (req->sv1);
		958	}
		959	else
		960	{
		961	req->type = EIO_FCHMOD;
		962	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		963	}
		964
		965	REQ_SEND;
		966	}
		967
		968	void
		969	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		970	PPCODE:
		971	{
		972	dREQ;
		973
		974	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		975	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		976	req->sv1 = newSVsv (fh_or_path);
		977
		978	if (SvPOK (req->sv1))
		979	{
		980	req->type = EIO_CHOWN;
		981	req->ptr1 = SvPVbyte_nolen (req->sv1);
		982	}
		983	else
		984	{
		985	req->type = EIO_FCHOWN;
		986	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		987	}
		988
		989	REQ_SEND;
		990	}
		991
		992	void
		993	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		994	PPCODE:
		995	{
		996	dREQ;
		997
		998	req->type = EIO_READDIR;
		999	req->sv1 = newSVsv (pathname);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1002
		1003	if (flags & EIO_READDIR_DENTS)
		1004	req->int1 |= EIO_READDIR_CUSTOM2;
		1005
		1006	REQ_SEND;
		1007	}
		1008
		1009	void
1397	aio_unlink (pathname,callback=&PL_sv_undef)	1010	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1398	SV * pathname
1399	SV * callback
1400	ALIAS:	1011	ALIAS:
1401	aio_unlink = REQ_UNLINK	1012	aio_unlink = EIO_UNLINK
1402	aio_rmdir = REQ_RMDIR	1013	aio_rmdir = EIO_RMDIR
1403	aio_readdir = REQ_READDIR	1014	aio_readdir = EIO_READDIR
1404	PPCODE:	1015	PPCODE:
1405	{	1016	{
1406	dREQ;	1017	dREQ;
1407		1018
1408	req->type = ix;	1019	req->type = ix;
1409	req->data = newSVsv (pathname);	1020	req->sv1 = newSVsv (pathname);
1410	req->dataptr = SvPVbyte_nolen (req->data);	1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
1411		1022
1412	REQ_SEND;	1023	REQ_SEND;
1413	}	1024	}
1414		1025
1415	void	1026	void
1416	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1027	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1417	SV * oldpath
1418	SV * newpath
1419	SV * callback
1420	ALIAS:	1028	ALIAS:
1421	aio_link = REQ_LINK	1029	aio_link = EIO_LINK
1422	aio_symlink = REQ_SYMLINK	1030	aio_symlink = EIO_SYMLINK
1423	aio_rename = REQ_RENAME	1031	aio_rename = EIO_RENAME
1424	PPCODE:	1032	PPCODE:
1425	{	1033	{
1426	dREQ;	1034	dREQ;
1427		1035
1428	req->type = ix;	1036	req->type = ix;
1429	req->fh = newSVsv (oldpath);	1037	req->sv1 = newSVsv (oldpath);
1430	req->data2ptr = SvPVbyte_nolen (req->fh);	1038	req->ptr1 = SvPVbyte_nolen (req->sv1);
1431	req->data = newSVsv (newpath);	1039	req->sv2 = newSVsv (newpath);
1432	req->dataptr = SvPVbyte_nolen (req->data);	1040	req->ptr2 = SvPVbyte_nolen (req->sv2);
1433		1041
1434	REQ_SEND;	1042	REQ_SEND;
1435	}	1043	}
1436		1044
1437	void	1045	void
1438	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1046	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1439	SV * pathname
1440	SV * callback
1441	UV mode
1442	UV dev
1443	PPCODE:	1047	PPCODE:
1444	{	1048	{
1445	dREQ;	1049	dREQ;
1446		1050
1447	req->type = REQ_MKNOD;	1051	req->type = EIO_MKNOD;
1448	req->data = newSVsv (pathname);	1052	req->sv1 = newSVsv (pathname);
1449	req->dataptr = SvPVbyte_nolen (req->data);	1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
1450	req->mode = (mode_t)mode;	1054	req->int2 = (mode_t)mode;
1451	req->offset = dev;	1055	req->offs = dev;
1452		1056
1453	REQ_SEND;	1057	REQ_SEND;
1454	}	1058	}
1455		1059
1456	void	1060	void
1457	aio_busy (delay,callback=&PL_sv_undef)	1061	aio_busy (double delay, SV *callback=&PL_sv_undef)
1458	double delay
1459	SV * callback
1460	PPCODE:	1062	PPCODE:
1461	{	1063	{
1462	dREQ;	1064	dREQ;
1463		1065
1464	req->type = REQ_BUSY;	1066	req->type = EIO_BUSY;
1465	req->fd = delay < 0. ? 0 : delay;	1067	req->nv1 = delay < 0. ? 0. : delay;
1466	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1467		1068
1468	REQ_SEND;	1069	REQ_SEND;
1469	}	1070	}
1470		1071
1471	void	1072	void
1472	aio_group (callback=&PL_sv_undef)	1073	aio_group (SV *callback=&PL_sv_undef)
1473	SV * callback
1474	PROTOTYPE: ;$	1074	PROTOTYPE: ;$
1475	PPCODE:	1075	PPCODE:
1476	{	1076	{
1477	dREQ;	1077	dREQ;
1478		1078
1479	req->type = REQ_GROUP;	1079	req->type = EIO_GROUP;
		1080
1480	req_send (req);	1081	req_submit (req);
1481
1482	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1082	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1483	}	1083	}
1484		1084
1485	void	1085	void
1486	aio_nop (callback=&PL_sv_undef)	1086	aio_nop (SV *callback=&PL_sv_undef)
1487	SV * callback	1087	ALIAS:
		1088	aio_nop = EIO_NOP
		1089	aio_sync = EIO_SYNC
1488	PPCODE:	1090	PPCODE:
1489	{	1091	{
1490	dREQ;	1092	dREQ;
1491		1093
1492	req->type = REQ_NOP;	1094	req->type = ix;
1493		1095
1494	REQ_SEND;	1096	REQ_SEND;
1495	}	1097	}
1496		1098
1497	int	1099	int
1498	aioreq_pri (int pri = 0)	1100	aioreq_pri (int pri = 0)
1499	PROTOTYPE: ;$	1101	PROTOTYPE: ;$
1500	CODE:	1102	CODE:
1501	RETVAL = next_pri - PRI_BIAS;	1103	RETVAL = next_pri;
1502	if (items > 0)	1104	if (items > 0)
1503	{	1105	{
1504	if (pri < PRI_MIN) pri = PRI_MIN;	1106	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1505	if (pri > PRI_MAX) pri = PRI_MAX;	1107	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1506	next_pri = pri + PRI_BIAS;	1108	next_pri = pri;
1507	}	1109	}
1508	OUTPUT:	1110	OUTPUT:
1509	RETVAL	1111	RETVAL
1510		1112
1511	void	1113	void
1512	aioreq_nice (int nice = 0)	1114	aioreq_nice (int nice = 0)
1513	CODE:	1115	CODE:
1514	nice = next_pri - nice;	1116	nice = next_pri - nice;
1515	if (nice < PRI_MIN) nice = PRI_MIN;	1117	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1516	if (nice > PRI_MAX) nice = PRI_MAX;	1118	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1517	next_pri = nice + PRI_BIAS;	1119	next_pri = nice;
1518		1120
1519	void	1121	void
1520	flush ()	1122	flush ()
1521	PROTOTYPE:	1123	PROTOTYPE:
1522	CODE:	1124	CODE:
1523	while (nreqs)	1125	while (eio_nreqs ())
1524	{	1126	{
1525	poll_wait ();	1127	poll_wait ();
1526	poll_cb (0);	1128	poll_cb ();
1527	}	1129	}
1528		1130
1529	void	1131	int
1530	poll()	1132	poll()
1531	PROTOTYPE:	1133	PROTOTYPE:
1532	CODE:	1134	CODE:
1533	if (nreqs)
1534	{
1535	poll_wait ();	1135	poll_wait ();
1536	poll_cb (0);	1136	RETVAL = poll_cb ();
1537	}	1137	OUTPUT:
		1138	RETVAL
1538		1139
1539	int	1140	int
1540	poll_fileno()	1141	poll_fileno()
1541	PROTOTYPE:	1142	PROTOTYPE:
1542	CODE:	1143	CODE:
…		…
1546		1147
1547	int	1148	int
1548	poll_cb(...)	1149	poll_cb(...)
1549	PROTOTYPE:	1150	PROTOTYPE:
1550	CODE:	1151	CODE:
1551	RETVAL = poll_cb (0);	1152	RETVAL = poll_cb ();
1552	OUTPUT:	1153	OUTPUT:
1553	RETVAL	1154	RETVAL
1554		1155
1555	int
1556	poll_some(int max = 0)
1557	PROTOTYPE: $
1558	CODE:
1559	RETVAL = poll_cb (max);
1560	OUTPUT:
1561	RETVAL
1562
1563	void	1156	void
1564	poll_wait()	1157	poll_wait()
1565	PROTOTYPE:	1158	PROTOTYPE:
1566	CODE:	1159	CODE:
1567	if (nreqs)
1568	poll_wait ();	1160	poll_wait ();
1569		1161
1570	int	1162	int
1571	nreqs()	1163	nreqs()
1572	PROTOTYPE:	1164	PROTOTYPE:
1573	CODE:	1165	CODE:
1574	RETVAL = nreqs;	1166	RETVAL = eio_nreqs ();
1575	OUTPUT:	1167	OUTPUT:
1576	RETVAL	1168	RETVAL
1577		1169
1578	int	1170	int
1579	nready()	1171	nready()
1580	PROTOTYPE:	1172	PROTOTYPE:
1581	CODE:	1173	CODE:
1582	RETVAL = get_nready ();	1174	RETVAL = eio_nready ();
1583	OUTPUT:	1175	OUTPUT:
1584	RETVAL	1176	RETVAL
1585		1177
1586	int	1178	int
1587	npending()	1179	npending()
1588	PROTOTYPE:	1180	PROTOTYPE:
1589	CODE:	1181	CODE:
1590	RETVAL = get_npending ();	1182	RETVAL = eio_npending ();
1591	OUTPUT:	1183	OUTPUT:
1592	RETVAL	1184	RETVAL
1593		1185
		1186	int
		1187	nthreads()
		1188	PROTOTYPE:
		1189	CODE:
		1190	RETVAL = eio_nthreads ();
		1191	OUTPUT:
		1192	RETVAL
		1193
		1194	int
		1195	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1196	PROTOTYPE: $$$$
		1197	CODE:
		1198	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1199	RETVAL = posix_fadvise (fh, offset, length, advice);
		1200	#else
		1201	RETVAL = errno = ENOSYS;
		1202	#endif
		1203	OUTPUT:
		1204	RETVAL
		1205
		1206	ssize_t
		1207	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1208	PROTOTYPE: $$$$
		1209	CODE:
		1210	eio_sendfile_sync (ofh, ifh, offset, count);
		1211
		1212	void _on_next_submit (SV *cb)
		1213	CODE:
		1214	SvREFCNT_dec (on_next_submit);
		1215	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1216
1594	PROTOTYPES: DISABLE	1217	PROTOTYPES: DISABLE
1595		1218
1596	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1219	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1597		1220
1598	void	1221	void
1599	cancel (aio_req_ornot req)	1222	cancel (aio_req_ornot req)
1600	CODE:	1223	CODE:
1601	req_cancel (req);	1224	eio_cancel (req);
1602		1225
1603	void	1226	void
1604	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1227	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1605	CODE:	1228	PPCODE:
		1229	{
		1230	if (GIMME_V != G_VOID)
		1231	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1232
		1233	if (items > 1)
		1234	{
		1235	SV *cb_cv = get_cb (callback);
		1236
1606	SvREFCNT_dec (req->callback);	1237	SvREFCNT_dec (req->callback);
1607	req->callback = newSVsv (callback);	1238	req->callback = SvREFCNT_inc (cb_cv);
		1239	}
		1240	}
1608		1241
1609	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1242	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1610		1243
1611	void	1244	void
1612	add (aio_req grp, ...)	1245	add (aio_req grp, ...)
1613	PPCODE:	1246	PPCODE:
1614	{	1247	{
1615	int i;	1248	int i;
1616	aio_req req;
1617		1249
1618	if (grp->fd == 2)	1250	if (grp->int1 == 2)
1619	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1251	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1620		1252
1621	for (i = 1; i < items; ++i )	1253	for (i = 1; i < items; ++i )
1622	{	1254	{
		1255	aio_req req;
		1256
1623	if (GIMME_V != G_VOID)	1257	if (GIMME_V != G_VOID)
1624	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1258	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1625		1259
1626	req = SvAIO_REQ (ST (i));	1260	req = SvAIO_REQ (ST (i));
1627		1261
1628	if (req)	1262	if (req)
1629	{	1263	eio_grp_add (grp, req);
1630	++grp->length;
1631	req->grp = grp;
1632
1633	req->grp_prev = 0;
1634	req->grp_next = grp->grp_first;
1635
1636	if (grp->grp_first)
1637	grp->grp_first->grp_prev = req;
1638
1639	grp->grp_first = req;
1640	}
1641	}	1264	}
1642	}	1265	}
1643		1266
1644	void	1267	void
1645	cancel_subs (aio_req_ornot req)	1268	cancel_subs (aio_req_ornot req)
…		…
1654	AV *av;	1277	AV *av;
1655		1278
1656	grp->errorno = errno;	1279	grp->errorno = errno;
1657		1280
1658	av = newAV ();	1281	av = newAV ();
		1282	av_extend (av, items - 1);
1659		1283
1660	for (i = 1; i < items; ++i )	1284	for (i = 1; i < items; ++i )
1661	av_push (av, newSVsv (ST (i)));	1285	av_push (av, newSVsv (ST (i)));
1662		1286
1663	SvREFCNT_dec (grp->data);	1287	SvREFCNT_dec (grp->sv1);
1664	grp->data = (SV *)av;	1288	grp->sv1 = (SV *)av;
1665	}	1289	}
1666		1290
1667	void	1291	void
1668	errno (aio_req grp, int errorno = errno)	1292	errno (aio_req grp, int errorno = errno)
1669	CODE:	1293	CODE:
1670	grp->errorno = errorno;	1294	grp->errorno = errorno;
1671		1295
1672	void	1296	void
1673	limit (aio_req grp, int limit)	1297	limit (aio_req grp, int limit)
1674	CODE:	1298	CODE:
1675	grp->fd2 = limit;	1299	eio_grp_limit (grp, limit);
1676	aio_grp_feed (grp);
1677		1300
1678	void	1301	void
1679	feed (aio_req grp, SV *callback=&PL_sv_undef)	1302	feed (aio_req grp, SV *callback=&PL_sv_undef)
1680	CODE:	1303	CODE:
1681	{	1304	{
1682	SvREFCNT_dec (grp->fh2);	1305	SvREFCNT_dec (grp->sv2);
1683	grp->fh2 = newSVsv (callback);	1306	grp->sv2 = newSVsv (callback);
		1307	grp->feed = aio_grp_feed;
1684		1308
1685	if (grp->fd2 <= 0)	1309	if (grp->int2 <= 0)
1686	grp->fd2 = 2;	1310	grp->int2 = 2;
1687		1311
1688	aio_grp_feed (grp);	1312	eio_grp_limit (grp, grp->int2);
1689	}	1313	}
1690		1314

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