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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.78 by root, Thu Oct 26 14:35:34 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	/* buffer size for various temporary buffers */	100	/*****************************************************************************/
67	#define AIO_BUFSIZE 65536
68		101
69	#define dBUF \	102	static HV *stash;
70	char *aio_buf; \	103	typedef SV SV8; /* byte-sv, used for argument-checking */
71	LOCK (wrklock); \	104	typedef int aio_rfd; /* read file desriptor */
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	105	typedef int aio_wfd; /* write file descriptor */
73	UNLOCK (wrklock); \
74	if (!aio_buf) \
75	return -1;
76
77	enum {
78	REQ_QUIT,
79	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
81	REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85	REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,
87	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,
89	};
90		106
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
92	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
93		109
94	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
95	{
96	struct aio_cb *volatile next;
97
98	SV *data, *callback;	111	SV *callback; \
99	SV *fh, *fh2;	112	SV *sv1, *sv2; \
100	void *dataptr, *data2ptr;
101	Stat_t *statdata;
102	off_t offset;
103	size_t length;
104	ssize_t result;
105
106	STRLEN dataoffset;	113	STRLEN stroffset; \
107	int type;	114	SV *self;
108	int fd, fd2;
109	int errorno;
110	mode_t mode; /* open */
111		115
112	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
113	unsigned char pri;
114		117
115	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
117	} 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)
118		149
119	enum {	150	enum {
120	FLAG_CANCELLED = 0x01,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
121	};	152	};
122		153
		154	#include "libeio/eio.c"
		155
123	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
124	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
125		158
126	enum {	159	static SV *on_next_submit;
127	PRI_MIN = -4,	160	static int next_pri = EIO_PRI_DEFAULT;
128	PRI_MAX = 4,	161	static int max_outstanding;
129		162
130	DEFAULT_PRI = 0,	163	static int respipe_osf [2], respipe [2] = { -1, -1 };
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134		164
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
136
137	static unsigned int started, wanted;
138	static volatile unsigned int nreqs;
139	static volatile unsigned int max_outstanding = 0xffffffff;
140	static int respipe [2];
141
142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
144	#else
145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
146	#endif
147
148	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
149	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
150
151	/* worker threads management */
152	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
153
154	typedef struct worker {
155	/* locked by wrklock */
156	struct worker *prev, *next;
157
158	pthread_t tid;
159
160	/* locked by reslock, reqlock or wrklock */
161	aio_req req; /* currently processed request */
162	void *dbuf;
163	DIR *dirp;
164	} worker;
165
166	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
167
168	static void worker_clear (worker *wrk)
169	{
170	if (wrk->dirp)
171	{
172	closedir (wrk->dirp);
173	wrk->dirp = 0;
174	}
175
176	if (wrk->dbuf)
177	{
178	free (wrk->dbuf);
179	wrk->dbuf = 0;
180	}
181	}
182
183	static void worker_free (worker *wrk)
184	{
185	wrk->next->prev = wrk->prev;
186	wrk->prev->next = wrk->next;
187
188	free (wrk);
189	}
190
191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
194
195	/*
196	* a somewhat faster data structure might be nice, but
197	* with 8 priorities this actually needs <20 insns
198	* per shift, the most expensive operation.
199	*/
200	typedef struct {
201	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
202	int size;
203	} reqq;
204
205	static reqq req_queue;
206	static reqq res_queue;
207
208	int reqq_push (reqq *q, aio_req req)
209	{
210	int pri = req->pri;
211	req->next = 0;
212
213	if (q->qe[pri])
214	{
215	q->qe[pri]->next = req;
216	q->qe[pri] = req;
217	}
218	else
219	q->qe[pri] = q->qs[pri] = req;
220
221	return q->size++;
222	}
223
224	aio_req reqq_shift (reqq *q)
225	{
226	int pri;
227
228	if (!q->size)
229	return 0;
230
231	--q->size;
232
233	for (pri = NUM_PRI; pri--; )
234	{
235	aio_req req = q->qs[pri];
236
237	if (req)
238	{
239	if (!(q->qs[pri] = req->next))
240	q->qe[pri] = 0;
241
242	return req;
243	}
244	}
245
246	abort ();
247	}
248
249	static int poll_cb (int max);
250	static void req_invoke (aio_req req);
251	static void req_free (aio_req req);	165	static void req_destroy (aio_req req);
252	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	}
253		181
254	/* must be called at most once */	182	/* must be called at most once */
255	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
256	{	184	{
257	if (!req->self)	185	if (!req->self)
…		…
275	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
276	}	204	}
277		205
278	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
279	{	207	{
280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	208	if (grp->sv2 && SvOK (grp->sv2))
281	{	209	{
282	int old_len = grp->length;
283
284	if (grp->fh2 && SvOK (grp->fh2))
285	{
286	dSP;	210	dSP;
287		211
288	ENTER;	212	ENTER;
289	SAVETMPS;	213	SAVETMPS;
290	PUSHMARK (SP);	214	PUSHMARK (SP);
291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
292	PUTBACK;	216	PUTBACK;
293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
294	SPAGAIN;	218	SPAGAIN;
295	FREETMPS;	219	FREETMPS;
296	LEAVE;	220	LEAVE;
297	}
298
299	/* stop if no progress has been made */
300	if (old_len == grp->length)
301	{
302	SvREFCNT_dec (grp->fh2);
303	grp->fh2 = 0;
304	break;
305	}
306	}	221	}
307	}	222	}
308		223
309	static void aio_grp_dec (aio_req grp)	224	static void req_submit (eio_req *req)
310	{	225	{
311	--grp->length;	226	eio_submit (req);
312		227
313	/* call feeder, if applicable */	228	if (expect_false (on_next_submit))
314	aio_grp_feed (grp);
315
316	/* finish, if done */
317	if (!grp->length && grp->fd)
318	{	229	{
319	req_invoke (grp);	230	dSP;
320	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);
321	}	238	}
322	}	239	}
323		240
324	static void poll_wait ()	241	static int req_invoke (eio_req *req)
325	{	242	{
326	fd_set rfd;	243	dSP;
327		244
328	while (nreqs)	245	if (req->flags & FLAG_SV2_RO_OFF)
		246	SvREADONLY_off (req->sv2);
		247
		248	if (!EIO_CANCELLED (req) && req->callback)
329	{	249	{
330	int size;
331	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
332	LOCK (reslock);
333	#endif
334	size = res_queue.size;
335	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
336	UNLOCK (reslock);
337	#endif
338
339	if (size)
340	return;
341
342	FD_ZERO(&rfd);
343	FD_SET(respipe [0], &rfd);
344
345	select (respipe [0] + 1, &rfd, 0, 0, 0);
346	}
347	}
348
349	static void req_invoke (aio_req req)
350	{
351	dSP;
352
353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
354	{
355	errno = req->errorno;
356
357	ENTER;	250	ENTER;
358	SAVETMPS;	251	SAVETMPS;
359	PUSHMARK (SP);	252	PUSHMARK (SP);
360	EXTEND (SP, 1);	253	EXTEND (SP, 1);
361		254
362	switch (req->type)	255	switch (req->type)
363	{	256	{
364	case REQ_READDIR:	257	case EIO_READDIR:
365	{	258	{
366	SV *rv = &PL_sv_undef;	259	SV *rv = &PL_sv_undef;
367		260
368	if (req->result >= 0)	261	if (req->result >= 0)
369	{	262	{
370	int i;	263	int i;
371	char *buf = req->data2ptr;	264	char *names = (char *)req->ptr2;
		265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
372	AV *av = newAV ();	266	AV *av = newAV ();
373		267
374	av_extend (av, req->result - 1);	268	av_extend (av, req->result - 1);
375		269
376	for (i = 0; i < req->result; ++i)	270	for (i = 0; i < req->result; ++i)
377	{	271	{
378	SV *sv = newSVpv (buf, 0);	272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
379		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
380	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);
381	buf += SvCUR (sv) + 1;	304	names += SvCUR (name) + 1;
		305	}
382	}	306	}
383		307
384	rv = sv_2mortal (newRV_noinc ((SV *)av));	308	rv = sv_2mortal (newRV_noinc ((SV *)av));
385	}	309	}
386		310
387	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))));
388	}	315	}
389	break;	316	break;
390		317
391	case REQ_OPEN:	318	case EIO_OPEN:
392	{	319	{
393	/* convert fd to fh */	320	/* convert fd to fh */
394	SV *fh;	321	SV *fh = &PL_sv_undef;
395		322
396	PUSHs (sv_2mortal (newSViv (req->result)));	323	if (req->result >= 0)
397	PUTBACK;	324	{
398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	325	GV *gv = (GV *)sv_newmortal ();
399	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);
400		332
401	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	);
402		340
		341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		342	fh = (SV *)gv;
		343	}
		344
403	PUSHMARK (SP);	345	PUSHs (fh);
404	XPUSHs (sv_2mortal (fh));
405	}	346	}
406	break;	347	break;
407		348
408	case REQ_GROUP:	349	case EIO_GROUP:
409	req->fd = 2; /* mark group as finished */	350	req->int1 = 2; /* mark group as finished */
410		351
411	if (req->data)	352	if (req->sv1)
412	{	353	{
413	int i;	354	int i;
414	AV *av = (AV *)req->data;	355	AV *av = (AV *)req->sv1;
415		356
416	EXTEND (SP, AvFILL (av) + 1);	357	EXTEND (SP, AvFILL (av) + 1);
417	for (i = 0; i <= AvFILL (av); ++i)	358	for (i = 0; i <= AvFILL (av); ++i)
418	PUSHs (*av_fetch (av, i, 0));	359	PUSHs (*av_fetch (av, i, 0));
419	}	360	}
420	break;	361	break;
421		362
422	case REQ_NOP:	363	case EIO_NOP:
423	case REQ_BUSY:	364	case EIO_BUSY:
424	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 */
425		395
426	default:	396	default:
427	PUSHs (sv_2mortal (newSViv (req->result)));	397	PUSHs (sv_2mortal (newSViv (req->result)));
428	break;	398	break;
429	}	399	}
430		400
		401	errno = req->errorno;
431		402
432	PUTBACK;	403	PUTBACK;
433	call_sv (req->callback, G_VOID | G_EVAL);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
434	SPAGAIN;	405	SPAGAIN;
435		406
436	FREETMPS;	407	FREETMPS;
437	LEAVE;	408	LEAVE;
		409
		410	PUTBACK;
438	}	411	}
439		412
440	if (req->grp)	413	return !!SvTRUE (ERRSV);
441	{
442	aio_req grp = req->grp;
443
444	/* unlink request */
445	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
446	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
447
448	if (grp->grp_first == req)
449	grp->grp_first = req->grp_next;
450
451	aio_grp_dec (grp);
452	}
453
454	if (SvTRUE (ERRSV))
455	{
456	req_free (req);
457	croak (0);
458	}
459	}	414	}
460		415
461	static void req_free (aio_req req)	416	static void req_destroy (aio_req req)
462	{	417	{
463	if (req->self)	418	if (req->self)
464	{	419	{
465	sv_unmagic (req->self, PERL_MAGIC_ext);	420	sv_unmagic (req->self, PERL_MAGIC_ext);
466	SvREFCNT_dec (req->self);	421	SvREFCNT_dec (req->self);
467	}	422	}
468		423
469	SvREFCNT_dec (req->data);
470	SvREFCNT_dec (req->fh);	424	SvREFCNT_dec (req->sv1);
471	SvREFCNT_dec (req->fh2);	425	SvREFCNT_dec (req->sv2);
472	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
473	Safefree (req->statdata);
474
475	if (req->type == REQ_READDIR)
476	free (req->data2ptr);
477		427
478	Safefree (req);	428	Safefree (req);
479	}	429	}
480		430
481	static void req_cancel_subs (aio_req grp)	431	static void req_cancel_subs (aio_req grp)
482	{	432	{
483	aio_req sub;	433	aio_req sub;
484		434
485	if (grp->type != REQ_GROUP)	435	if (grp->type != EIO_GROUP)
486	return;	436	return;
487		437
488	SvREFCNT_dec (grp->fh2);	438	SvREFCNT_dec (grp->sv2);
489	grp->fh2 = 0;	439	grp->sv2 = 0;
490		440
491	for (sub = grp->grp_first; sub; sub = sub->grp_next)	441	eio_grp_cancel (grp);
492	req_cancel (sub);
493	}	442	}
494		443
495	static void req_cancel (aio_req req)	444	#ifdef USE_SOCKETS_AS_HANDLES
496	{	445	# define TO_SOCKET(x) (win32_get_osfhandle (x))
497	req->flags |= FLAG_CANCELLED;	446	#else
		447	# define TO_SOCKET(x) (x)
		448	#endif
498		449
499	req_cancel_subs (req);	450	static void
500	}	451	create_respipe (void)
		452	{
		453	int old_readfd = respipe [0];
501		454
		455	if (respipe [1] >= 0)
		456	respipe_close (TO_SOCKET (respipe [1]));
		457
		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)
		466	{
		467	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		468	croak ("unable to initialize result pipe(2)");
		469
		470	respipe_close (respipe [0]);
		471	respipe [0] = old_readfd;
		472	}
		473
		474	#ifdef _WIN32
		475	int arg = 1;
		476	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		477	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		478	#else
		479	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		480	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		481	#endif
		482	croak ("unable to initialize result pipe(3)");
		483
		484	respipe_osf [0] = TO_SOCKET (respipe [0]);
		485	respipe_osf [1] = TO_SOCKET (respipe [1]);
		486	}
		487
		488	static void poll_wait (void)
		489	{
		490	fd_set rfd;
		491
		492	while (eio_nreqs ())
		493	{
		494	int size;
		495
		496	X_LOCK (reslock);
		497	size = res_queue.size;
		498	X_UNLOCK (reslock);
		499
		500	if (size)
		501	return;
		502
		503	etp_maybe_start_thread ();
		504
		505	FD_ZERO (&rfd);
		506	FD_SET (respipe [0], &rfd);
		507
		508	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		509	}
		510	}
		511
502	static int poll_cb (int max)	512	static int poll_cb (void)
503	{	513	{
504	dSP;
505	int count = 0;
506	int do_croak = 0;
507	aio_req req;
508
509	for (;;)	514	for (;;)
510	{	515	{
511	while (max <= 0 || count < max)	516	int res = eio_poll ();
512	{
513	LOCK (reslock);
514	req = reqq_shift (&res_queue);
515		517
516	if (req)	518	if (res > 0)
517	{
518	if (!res_queue.size)
519	{
520	/* read any signals sent by the worker threads */
521	char buf [32];
522	while (read (respipe [0], buf, 32) == 32)
523	;
524	}
525	}
526
527	UNLOCK (reslock);
528
529	if (!req)
530	break;
531
532	--nreqs;
533
534	if (req->type == REQ_QUIT)
535	--started;
536	else if (req->type == REQ_GROUP && req->length)
537	{
538	req->fd = 1; /* mark request as delayed */
539	continue;
540	}
541	else
542	{
543	if (req->type == REQ_READ)
544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
545
546	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
547	SvREADONLY_off (req->data);
548
549	if (req->statdata)
550	{
551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
552	PL_laststatval = req->result;
553	PL_statcache = *(req->statdata);
554	}
555
556	req_invoke (req);
557
558	count++;
559	}
560
561	req_free (req);
562	}
563
564	if (nreqs <= max_outstanding)
565	break;	519	croak (0);
		520
		521	if (!max_outstanding || max_outstanding > eio_nreqs ())
		522	return res;
566		523
567	poll_wait ();	524	poll_wait ();
568
569	max = 0;
570	}	525	}
571
572	return count;
573	}	526	}
574		527
575	static void *aio_proc(void *arg);
576
577	static void start_thread (void)	528	static void atfork_child (void)
578	{	529	{
579	sigset_t fullsigset, oldsigset;	530	create_respipe ();
580	pthread_attr_t attr;
581
582	worker *wrk = calloc (1, sizeof (worker));
583
584	if (!wrk)
585	croak ("unable to allocate worker thread data");
586
587	pthread_attr_init (&attr);
588	pthread_attr_setstacksize (&attr, STACKSIZE);
589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
590
591	sigfillset (&fullsigset);
592
593	LOCK (wrklock);
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597	{
598	wrk->prev = &wrk_first;
599	wrk->next = wrk_first.next;
600	wrk_first.next->prev = wrk;
601	wrk_first.next = wrk;
602	++started;
603	}
604	else
605	free (wrk);
606
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
608	UNLOCK (wrklock);
609	}	531	}
610		532
611	static void req_send (aio_req req)	533	static SV *
		534	get_cb (SV *cb_sv)
612	{	535	{
613	while (started < wanted && nreqs >= started)	536	HV *st;
614	start_thread ();	537	GV *gvp;
		538	CV *cv;
615		539
616	++nreqs;	540	if (!SvOK (cb_sv))
617
618	LOCK (reqlock);
619	reqq_push (&req_queue, req);
620	pthread_cond_signal (&reqwait);
621	UNLOCK (reqlock);
622	}
623
624	static void end_thread (void)
625	{
626	aio_req req;
627
628	Newz (0, req, 1, aio_cb);
629
630	req->type = REQ_QUIT;
631	req->pri = PRI_MAX + PRI_BIAS;
632
633	req_send (req);
634	}
635
636	static void min_parallel (int nthreads)
637	{
638	if (wanted < nthreads)
639	wanted = nthreads;
640	}
641
642	static void max_parallel (int nthreads)
643	{
644	int cur = started;
645
646	if (wanted > nthreads)
647	wanted = nthreads;
648
649	while (cur > wanted)
650	{
651	end_thread ();
652	cur--;
653	}
654
655	while (started > wanted)
656	{
657	poll_wait ();
658	poll_cb (0);
659	}
660	}
661
662	static void create_pipe ()
663	{
664	if (pipe (respipe))
665	croak ("unable to initialize result pipe");
666
667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
668	croak ("cannot set result pipe to nonblocking mode");
669
670	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
671	croak ("cannot set result pipe to nonblocking mode");
672	}
673
674	/*****************************************************************************/
675	/* work around various missing functions */
676
677	#if !HAVE_PREADWRITE
678	# define pread aio_pread
679	# define pwrite aio_pwrite
680
681	/*
682	* make our pread/pwrite safe against themselves, but not against
683	* normal read/write by using a mutex. slows down execution a lot,
684	* but that's your problem, not mine.
685	*/
686	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
687
688	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
689	{
690	ssize_t res;
691	off_t ooffset;
692
693	LOCK (preadwritelock);
694	ooffset = lseek (fd, 0, SEEK_CUR);
695	lseek (fd, offset, SEEK_SET);
696	res = read (fd, buf, count);
697	lseek (fd, ooffset, SEEK_SET);
698	UNLOCK (preadwritelock);
699
700	return res;
701	}
702
703	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
704	{
705	ssize_t res;
706	off_t ooffset;
707
708	LOCK (preadwritelock);
709	ooffset = lseek (fd, 0, SEEK_CUR);
710	lseek (fd, offset, SEEK_SET);
711	res = write (fd, buf, count);
712	lseek (fd, offset, SEEK_SET);
713	UNLOCK (preadwritelock);
714
715	return res;
716	}
717	#endif
718
719	#if !HAVE_FDATASYNC
720	# define fdatasync fsync
721	#endif
722
723	#if !HAVE_READAHEAD
724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
725
726	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
727	{
728	dBUF;
729
730	while (count > 0)
731	{
732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
733
734	pread (fd, aio_buf, len, offset);
735	offset += len;
736	count -= len;
737	}
738
739	errno = 0;
740	}
741
742	#endif
743
744	#if !HAVE_READDIR_R
745	# define readdir_r aio_readdir_r
746
747	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
748
749	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
750	{
751	struct dirent *e;
752	int errorno;
753
754	LOCK (readdirlock);
755
756	e = readdir (dirp);
757	errorno = errno;
758
759	if (e)
760	{
761	*res = ent;
762	strcpy (ent->d_name, e->d_name);
763	}
764	else
765	*res = 0;
766
767	UNLOCK (readdirlock);
768
769	errno = errorno;
770	return e ? 0 : -1;
771	}
772	#endif
773
774	/* sendfile always needs emulation */
775	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
776	{
777	ssize_t res;
778
779	if (!count)
780	return 0;	541	return 0;
781		542
782	#if HAVE_SENDFILE	543	cv = sv_2cv (cb_sv, &st, &gvp, 0);
783	# if __linux
784	res = sendfile (ofd, ifd, &offset, count);
785		544
786	# elif __freebsd	545	if (!cv)
787	/*	546	croak ("IO::AIO callback must be undef or a CODE reference");
788	* Of course, the freebsd sendfile is a dire hack with no thoughts
789	* wasted on making it similar to other I/O functions.
790	*/
791	{
792	off_t sbytes;
793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
794		547
795	if (res < 0 && sbytes)	548	return (SV *)cv;
796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
797	res = sbytes;
798	}
799
800	# elif __hpux
801	res = sendfile (ofd, ifd, offset, count, 0, 0);
802
803	# elif __solaris
804	{
805	struct sendfilevec vec;
806	size_t sbytes;
807
808	vec.sfv_fd = ifd;
809	vec.sfv_flag = 0;
810	vec.sfv_off = offset;
811	vec.sfv_len = count;
812
813	res = sendfilev (ofd, &vec, 1, &sbytes);
814
815	if (res < 0 && sbytes)
816	res = sbytes;
817	}
818
819	# endif
820	#else
821	res = -1;
822	errno = ENOSYS;
823	#endif
824
825	if (res < 0
826	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
827	#if __solaris
828	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
829	#endif
830	)
831	)
832	{
833	/* emulate sendfile. this is a major pain in the ass */
834	dBUF;
835
836	res = 0;
837
838	while (count)
839	{
840	ssize_t cnt;
841
842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
843
844	if (cnt <= 0)
845	{
846	if (cnt && !res) res = -1;
847	break;
848	}
849
850	cnt = write (ofd, aio_buf, cnt);
851
852	if (cnt <= 0)
853	{
854	if (cnt && !res) res = -1;
855	break;
856	}
857
858	offset += cnt;
859	res += cnt;
860	count -= cnt;
861	}
862	}
863
864	return res;
865	}
866
867	/* read a full directory */
868	static void scandir_ (aio_req req, worker *self)
869	{
870	DIR *dirp;
871	union
872	{
873	struct dirent d;
874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
875	} *u;
876	struct dirent *entp;
877	char *name, *names;
878	int memlen = 4096;
879	int memofs = 0;
880	int res = 0;
881	int errorno;
882
883	LOCK (wrklock);
884	self->dirp = dirp = opendir (req->dataptr);
885	self->dbuf = u = malloc (sizeof (*u));
886	req->data2ptr = names = malloc (memlen);
887	UNLOCK (wrklock);
888
889	if (dirp && u && names)
890	for (;;)
891	{
892	errno = 0;
893	readdir_r (dirp, &u->d, &entp);
894
895	if (!entp)
896	break;
897
898	name = entp->d_name;
899
900	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
901	{
902	int len = strlen (name) + 1;
903
904	res++;
905
906	while (memofs + len > memlen)
907	{
908	memlen *= 2;
909	LOCK (wrklock);
910	req->data2ptr = names = realloc (names, memlen);
911	UNLOCK (wrklock);
912
913	if (!names)
914	break;
915	}
916
917	memcpy (names + memofs, name, len);
918	memofs += len;
919	}
920	}
921
922	if (errno)
923	res = -1;
924
925	req->result = res;
926	}
927
928	/*****************************************************************************/
929
930	static void *aio_proc (void *thr_arg)
931	{
932	aio_req req;
933	int type;
934	worker *self = (worker *)thr_arg;
935
936	do
937	{
938	LOCK (reqlock);
939
940	for (;;)
941	{
942	self->req = req = reqq_shift (&req_queue);
943
944	if (req)
945	break;
946
947	pthread_cond_wait (&reqwait, &reqlock);
948	}
949
950	UNLOCK (reqlock);
951
952	errno = 0; /* strictly unnecessary */
953	type = req->type; /* remember type for QUIT check */
954
955	if (!(req->flags & FLAG_CANCELLED))
956	switch (type)
957	{
958	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
959	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
960
961	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
962	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
963
964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
967
968	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
969	case REQ_CLOSE: req->result = close (req->fd); break;
970	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
971	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
972	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
975
976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
977	case REQ_FSYNC: req->result = fsync (req->fd); break;
978	case REQ_READDIR: scandir_ (req, self); break;
979
980	case REQ_BUSY:
981	{
982	struct timeval tv;
983
984	tv.tv_sec = req->fd;
985	tv.tv_usec = req->fd2;
986
987	req->result = select (0, 0, 0, 0, &tv);
988	}
989
990	case REQ_GROUP:
991	case REQ_NOP:
992	case REQ_QUIT:
993	break;
994
995	default:
996	req->result = ENOSYS;
997	break;
998	}
999
1000	req->errorno = errno;
1001
1002	LOCK (reslock);
1003
1004	if (!reqq_push (&res_queue, req))
1005	/* write a dummy byte to the pipe so fh becomes ready */
1006	write (respipe [1], &respipe, 1);
1007
1008	self->req = 0;
1009	worker_clear (self);
1010
1011	UNLOCK (reslock);
1012	}
1013	while (type != REQ_QUIT);
1014
1015	LOCK (wrklock);
1016	worker_free (self);
1017	UNLOCK (wrklock);
1018
1019	return 0;
1020	}
1021
1022	/*****************************************************************************/
1023
1024	static void atfork_prepare (void)
1025	{
1026	LOCK (wrklock);
1027	LOCK (reqlock);
1028	LOCK (reslock);
1029	#if !HAVE_PREADWRITE
1030	LOCK (preadwritelock);
1031	#endif
1032	#if !HAVE_READDIR_R
1033	LOCK (readdirlock);
1034	#endif
1035	}
1036
1037	static void atfork_parent (void)
1038	{
1039	#if !HAVE_READDIR_R
1040	UNLOCK (readdirlock);
1041	#endif
1042	#if !HAVE_PREADWRITE
1043	UNLOCK (preadwritelock);
1044	#endif
1045	UNLOCK (reslock);
1046	UNLOCK (reqlock);
1047	UNLOCK (wrklock);
1048	}
1049
1050	static void atfork_child (void)
1051	{
1052	aio_req prv;
1053
1054	while (prv = reqq_shift (&req_queue))
1055	req_free (prv);
1056
1057	while (prv = reqq_shift (&res_queue))
1058	req_free (prv);
1059
1060	while (wrk_first.next != &wrk_first)
1061	{
1062	worker *wrk = wrk_first.next;
1063
1064	if (wrk->req)
1065	req_free (wrk->req);
1066
1067	worker_clear (wrk);
1068	worker_free (wrk);
1069	}
1070
1071	started = 0;
1072	nreqs = 0;
1073
1074	close (respipe [0]);
1075	close (respipe [1]);
1076	create_pipe ();
1077
1078	atfork_parent ();
1079	}	549	}
1080		550
1081	#define dREQ \	551	#define dREQ \
		552	SV *cb_cv; \
1082	aio_req req; \	553	aio_req req; \
1083	int req_pri = next_pri; \	554	int req_pri = next_pri; \
1084	next_pri = DEFAULT_PRI + PRI_BIAS; \	555	next_pri = EIO_PRI_DEFAULT; \
1085	\	556	\
1086	if (SvOK (callback) && !SvROK (callback)) \	557	cb_cv = get_cb (callback); \
1087	croak ("callback must be undef or of reference type"); \
1088	\	558	\
1089	Newz (0, req, 1, aio_cb); \	559	Newz (0, req, 1, eio_req); \
1090	if (!req) \	560	if (!req) \
1091	croak ("out of memory during aio_req allocation"); \	561	croak ("out of memory during eio_req allocation"); \
1092	\	562	\
1093	req->callback = newSVsv (callback); \	563	req->callback = SvREFCNT_inc (cb_cv); \
1094	req->pri = req_pri	564	req->pri = req_pri
1095		565
1096	#define REQ_SEND \	566	#define REQ_SEND \
		567	PUTBACK; \
1097	req_send (req); \	568	req_submit (req); \
		569	SPAGAIN; \
1098	\	570	\
1099	if (GIMME_V != G_VOID) \	571	if (GIMME_V != G_VOID) \
1100	XPUSHs (req_sv (req, AIO_REQ_KLASS));	572	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1101		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
1102	MODULE = IO::AIO PACKAGE = IO::AIO	585	MODULE = IO::AIO PACKAGE = IO::AIO
1103		586
1104	PROTOTYPES: ENABLE	587	PROTOTYPES: ENABLE
1105		588
1106	BOOT:	589	BOOT:
1107	{	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
1108	HV *stash = gv_stashpv ("IO::AIO", 1);	633	stash = gv_stashpv ("IO::AIO", 1);
1109	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1110	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1111	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1112		634
		635	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		636	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		637
1113	create_pipe ();	638	create_respipe ();
1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	639
		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);
1115	}	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);
1116		658
1117	void	659	void
1118	min_parallel (int nthreads)	660	min_parallel (int nthreads)
1119	PROTOTYPE: $	661	PROTOTYPE: $
		662	CODE:
		663	eio_set_min_parallel (nthreads);
1120		664
1121	void	665	void
1122	max_parallel (int nthreads)	666	max_parallel (int nthreads)
1123	PROTOTYPE: $	667	PROTOTYPE: $
		668	CODE:
		669	eio_set_max_parallel (nthreads);
1124		670
1125	int	671	void
		672	max_idle (int nthreads)
		673	PROTOTYPE: $
		674	CODE:
		675	eio_set_max_idle (nthreads);
		676
		677	void
1126	max_outstanding (int maxreqs)	678	max_outstanding (int maxreqs)
1127	PROTOTYPE: $	679	PROTOTYPE: $
1128	CODE:	680	CODE:
1129	RETVAL = max_outstanding;
1130	max_outstanding = maxreqs;	681	max_outstanding = maxreqs;
1131	OUTPUT:
1132	RETVAL
1133		682
1134	void	683	void
1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	684	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1136	SV * pathname
1137	int flags
1138	int mode
1139	SV * callback
1140	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1141	PPCODE:	686	PPCODE:
1142	{	687	{
1143	dREQ;	688	dREQ;
1144		689
1145	req->type = REQ_OPEN;	690	req->type = EIO_OPEN;
1146	req->data = newSVsv (pathname);	691	req->sv1 = newSVsv (pathname);
1147	req->dataptr = SvPVbyte_nolen (req->data);	692	req->ptr1 = SvPVbyte_nolen (req->sv1);
1148	req->fd = flags;	693	req->int1 = flags;
1149	req->mode = mode;	694	req->int2 = mode;
1150		695
1151	REQ_SEND;	696	REQ_SEND;
1152	}	697	}
1153		698
1154	void	699	void
1155	aio_close (fh,callback=&PL_sv_undef)	700	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1156	SV * fh
1157	SV * callback
1158	PROTOTYPE: $;$	701	PROTOTYPE: $;$
1159	ALIAS:	702	ALIAS:
1160	aio_close = REQ_CLOSE
1161	aio_fsync = REQ_FSYNC	703	aio_fsync = EIO_FSYNC
1162	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = EIO_FDATASYNC
1163	PPCODE:	705	PPCODE:
1164	{	706	{
		707	int fd = extract_fd (fh, 0);
1165	dREQ;	708	dREQ;
1166		709
1167	req->type = ix;	710	req->type = ix;
1168	req->fh = newSVsv (fh);	711	req->sv1 = newSVsv (fh);
1169	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	712	req->int1 = fd;
1170		713
1171	REQ_SEND (req);	714	REQ_SEND (req);
1172	}	715	}
1173		716
1174	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: $$$$;$
		720	PPCODE:
		721	{
		722	int fd = extract_fd (fh, 0);
		723	dREQ;
		724
		725	req->type = EIO_SYNC_FILE_RANGE;
		726	req->sv1 = newSVsv (fh);
		727	req->int1 = fd;
		728	req->offs = offset;
		729	req->size = nbytes;
		730	req->int2 = flags;
		731
		732	REQ_SEND (req);
		733	}
		734
		735	void
		736	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		737	PROTOTYPE: $;$
		738	PPCODE:
		739	{
		740	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		741	int fd = extract_fd (fh, 0);
		742	dREQ;
		743
		744	if (close_pipe < 0)
		745	{
		746	int pipefd [2];
		747
		748	if (pipe (pipefd) < 0
		749	|| close (pipefd [1]) < 0
		750	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		751	abort (); /*D*/
		752
		753	close_pipe = pipefd [0];
		754	}
		755
		756	req->type = EIO_DUP2;
		757	req->int1 = close_pipe;
		758	req->sv2 = newSVsv (fh);
		759	req->int2 = fd;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
1175	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	765	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1176	SV * fh
1177	UV offset
1178	UV length
1179	SV * data
1180	UV dataoffset
1181	SV * callback
1182	ALIAS:	766	ALIAS:
1183	aio_read = REQ_READ	767	aio_read = EIO_READ
1184	aio_write = REQ_WRITE	768	aio_write = EIO_WRITE
1185	PROTOTYPE: $$$$$;$	769	PROTOTYPE: $$$$$;$
1186	PPCODE:	770	PPCODE:
1187	{	771	{
1188	aio_req req;
1189	STRLEN svlen;	772	STRLEN svlen;
		773	int fd = extract_fd (fh, ix == EIO_WRITE);
1190	char *svptr = SvPVbyte (data, svlen);	774	char *svptr = SvPVbyte (data, svlen);
1191		775	UV len = SvUV (length);
1192	SvUPGRADE (data, SVt_PV);
1193	SvPOK_on (data);
1194		776
1195	if (dataoffset < 0)	777	if (dataoffset < 0)
1196	dataoffset += svlen;	778	dataoffset += svlen;
1197		779
1198	if (dataoffset < 0 || dataoffset > svlen)	780	if (dataoffset < 0 || dataoffset > svlen)
1199	croak ("data offset outside of string");	781	croak ("dataoffset outside of data scalar");
1200		782
1201	if (ix == REQ_WRITE)	783	if (ix == EIO_WRITE)
1202	{	784	{
1203	/* write: check length and adjust. */	785	/* write: check length and adjust. */
1204	if (length < 0 || length + dataoffset > svlen)	786	if (!SvOK (length) || len + dataoffset > svlen)
1205	length = svlen - dataoffset;	787	len = svlen - dataoffset;
1206	}	788	}
1207	else	789	else
1208	{	790	{
1209	/* read: grow scalar as necessary */	791	/* read: check type and grow scalar as necessary */
		792	SvUPGRADE (data, SVt_PV);
1210	svptr = SvGROW (data, length + dataoffset);	793	svptr = SvGROW (data, len + dataoffset + 1);
1211	}	794	}
1212
1213	if (length < 0)
1214	croak ("length must not be negative");
1215		795
1216	{	796	{
1217	dREQ;	797	dREQ;
1218		798
1219	req->type = ix;	799	req->type = ix;
1220	req->fh = newSVsv (fh);	800	req->sv1 = newSVsv (fh);
1221	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	801	req->int1 = fd;
1222	: IoOFP (sv_2io (fh)));	802	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1223	req->offset = offset;	803	req->size = len;
1224	req->length = length;
1225	req->data = SvREFCNT_inc (data);	804	req->sv2 = SvREFCNT_inc (data);
1226	req->dataptr = (char *)svptr + dataoffset;	805	req->ptr2 = (char *)svptr + dataoffset;
		806	req->stroffset = dataoffset;
1227		807
1228	if (!SvREADONLY (data))	808	if (!SvREADONLY (data))
1229	{	809	{
1230	SvREADONLY_on (data);	810	SvREADONLY_on (data);
1231	req->data2ptr = (void *)data;	811	req->flags |= FLAG_SV2_RO_OFF;
1232	}	812	}
1233		813
1234	REQ_SEND;	814	REQ_SEND;
1235	}	815	}
1236	}	816	}
1237		817
1238	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
1239	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)
1240	SV * out_fh
1241	SV * in_fh
1242	UV in_offset
1243	UV length
1244	SV * callback
1245	PROTOTYPE: $$$$;$	835	PROTOTYPE: $$$$;$
1246	PPCODE:	836	PPCODE:
1247	{	837	{
		838	int ifd = extract_fd (in_fh , 0);
		839	int ofd = extract_fd (out_fh, 0);
1248	dREQ;	840	dREQ;
1249		841
1250	req->type = REQ_SENDFILE;	842	req->type = EIO_SENDFILE;
1251	req->fh = newSVsv (out_fh);	843	req->sv1 = newSVsv (out_fh);
1252	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	844	req->int1 = ofd;
1253	req->fh2 = newSVsv (in_fh);	845	req->sv2 = newSVsv (in_fh);
1254	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	846	req->int2 = ifd;
1255	req->offset = in_offset;	847	req->offs = in_offset;
1256	req->length = length;	848	req->size = length;
1257		849
1258	REQ_SEND;	850	REQ_SEND;
1259	}	851	}
1260		852
1261	void	853	void
1262	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	854	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1263	SV * fh
1264	UV offset
1265	IV length
1266	SV * callback
1267	PROTOTYPE: $$$;$	855	PROTOTYPE: $$$;$
1268	PPCODE:	856	PPCODE:
1269	{	857	{
		858	int fd = extract_fd (fh, 0);
1270	dREQ;	859	dREQ;
1271		860
1272	req->type = REQ_READAHEAD;	861	req->type = EIO_READAHEAD;
1273	req->fh = newSVsv (fh);	862	req->sv1 = newSVsv (fh);
1274	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	863	req->int1 = fd;
1275	req->offset = offset;	864	req->offs = offset;
1276	req->length = length;	865	req->size = length;
1277		866
1278	REQ_SEND;	867	REQ_SEND;
1279	}	868	}
1280		869
1281	void	870	void
1282	aio_stat (fh_or_path,callback=&PL_sv_undef)	871	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1283	SV * fh_or_path
1284	SV * callback
1285	ALIAS:	872	ALIAS:
1286	aio_stat = REQ_STAT	873	aio_stat = EIO_STAT
1287	aio_lstat = REQ_LSTAT	874	aio_lstat = EIO_LSTAT
1288	PPCODE:	875	PPCODE:
1289	{	876	{
1290	dREQ;	877	dREQ;
1291		878
1292	New (0, req->statdata, 1, Stat_t);	879	req->sv1 = newSVsv (fh_or_path);
1293	if (!req->statdata)
1294	{
1295	req_free (req);
1296	croak ("out of memory during aio_req->statdata allocation");
1297	}
1298		880
1299	if (SvPOK (fh_or_path))	881	if (SvPOK (req->sv1))
1300	{	882	{
1301	req->type = ix;	883	req->type = ix;
1302	req->data = newSVsv (fh_or_path);
1303	req->dataptr = SvPVbyte_nolen (req->data);	884	req->ptr1 = SvPVbyte_nolen (req->sv1);
1304	}	885	}
1305	else	886	else
1306	{	887	{
1307	req->type = REQ_FSTAT;	888	req->type = EIO_FSTAT;
1308	req->fh = newSVsv (fh_or_path);
1309	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1310	}	890	}
1311		891
1312	REQ_SEND;	892	REQ_SEND;
1313	}	893	}
1314		894
1315	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
1316	aio_unlink (pathname,callback=&PL_sv_undef)	1010	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1317	SV * pathname
1318	SV * callback
1319	ALIAS:	1011	ALIAS:
1320	aio_unlink = REQ_UNLINK	1012	aio_unlink = EIO_UNLINK
1321	aio_rmdir = REQ_RMDIR	1013	aio_rmdir = EIO_RMDIR
1322	aio_readdir = REQ_READDIR	1014	aio_readdir = EIO_READDIR
1323	PPCODE:	1015	PPCODE:
1324	{	1016	{
1325	dREQ;	1017	dREQ;
1326		1018
1327	req->type = ix;	1019	req->type = ix;
1328	req->data = newSVsv (pathname);	1020	req->sv1 = newSVsv (pathname);
1329	req->dataptr = SvPVbyte_nolen (req->data);	1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
1330		1022
1331	REQ_SEND;	1023	REQ_SEND;
1332	}	1024	}
1333		1025
1334	void	1026	void
1335	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1027	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1336	SV * oldpath
1337	SV * newpath
1338	SV * callback
1339	ALIAS:	1028	ALIAS:
1340	aio_link = REQ_LINK	1029	aio_link = EIO_LINK
1341	aio_symlink = REQ_SYMLINK	1030	aio_symlink = EIO_SYMLINK
1342	aio_rename = REQ_RENAME	1031	aio_rename = EIO_RENAME
1343	PPCODE:	1032	PPCODE:
1344	{	1033	{
1345	dREQ;	1034	dREQ;
1346		1035
1347	req->type = ix;	1036	req->type = ix;
1348	req->fh = newSVsv (oldpath);	1037	req->sv1 = newSVsv (oldpath);
1349	req->data2ptr = SvPVbyte_nolen (req->fh);	1038	req->ptr1 = SvPVbyte_nolen (req->sv1);
1350	req->data = newSVsv (newpath);	1039	req->sv2 = newSVsv (newpath);
1351	req->dataptr = SvPVbyte_nolen (req->data);	1040	req->ptr2 = SvPVbyte_nolen (req->sv2);
1352		1041
1353	REQ_SEND;	1042	REQ_SEND;
1354	}	1043	}
1355		1044
1356	void	1045	void
1357	aio_busy (delay,callback=&PL_sv_undef)	1046	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1358	double delay
1359	SV * callback
1360	PPCODE:	1047	PPCODE:
1361	{	1048	{
1362	dREQ;	1049	dREQ;
1363		1050
1364	req->type = REQ_BUSY;	1051	req->type = EIO_MKNOD;
1365	req->fd = delay < 0. ? 0 : delay;	1052	req->sv1 = newSVsv (pathname);
1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
1367		1054	req->int2 = (mode_t)mode;
		1055	req->offs = dev;
		1056
1368	REQ_SEND;	1057	REQ_SEND;
1369	}	1058	}
1370		1059
1371	void	1060	void
		1061	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1062	PPCODE:
		1063	{
		1064	dREQ;
		1065
		1066	req->type = EIO_BUSY;
		1067	req->nv1 = delay < 0. ? 0. : delay;
		1068
		1069	REQ_SEND;
		1070	}
		1071
		1072	void
1372	aio_group (callback=&PL_sv_undef)	1073	aio_group (SV *callback=&PL_sv_undef)
1373	SV * callback
1374	PROTOTYPE: ;$	1074	PROTOTYPE: ;$
1375	PPCODE:	1075	PPCODE:
1376	{	1076	{
1377	dREQ;	1077	dREQ;
1378		1078
1379	req->type = REQ_GROUP;	1079	req->type = EIO_GROUP;
		1080
1380	req_send (req);	1081	req_submit (req);
1381
1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1082	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1383	}	1083	}
1384		1084
1385	void	1085	void
1386	aio_nop (callback=&PL_sv_undef)	1086	aio_nop (SV *callback=&PL_sv_undef)
1387	SV * callback	1087	ALIAS:
		1088	aio_nop = EIO_NOP
		1089	aio_sync = EIO_SYNC
1388	PPCODE:	1090	PPCODE:
1389	{	1091	{
1390	dREQ;	1092	dREQ;
1391		1093
1392	req->type = REQ_NOP;	1094	req->type = ix;
1393		1095
1394	REQ_SEND;	1096	REQ_SEND;
1395	}	1097	}
1396		1098
1397	void	1099	int
1398	aioreq_pri (int pri = DEFAULT_PRI)	1100	aioreq_pri (int pri = 0)
1399	CODE:	1101	PROTOTYPE: ;$
		1102	CODE:
		1103	RETVAL = next_pri;
		1104	if (items > 0)
		1105	{
1400	if (pri < PRI_MIN) pri = PRI_MIN;	1106	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1401	if (pri > PRI_MAX) pri = PRI_MAX;	1107	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1402	next_pri = pri + PRI_BIAS;	1108	next_pri = pri;
		1109	}
		1110	OUTPUT:
		1111	RETVAL
1403		1112
1404	void	1113	void
1405	aioreq_nice (int nice = 0)	1114	aioreq_nice (int nice = 0)
1406	CODE:	1115	CODE:
1407	nice = next_pri - nice;	1116	nice = next_pri - nice;
1408	if (nice < PRI_MIN) nice = PRI_MIN;	1117	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1409	if (nice > PRI_MAX) nice = PRI_MAX;	1118	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1410	next_pri = nice + PRI_BIAS;	1119	next_pri = nice;
1411		1120
1412	void	1121	void
1413	flush ()	1122	flush ()
1414	PROTOTYPE:	1123	PROTOTYPE:
1415	CODE:	1124	CODE:
1416	while (nreqs)	1125	while (eio_nreqs ())
1417	{	1126	{
1418	poll_wait ();	1127	poll_wait ();
1419	poll_cb (0);	1128	poll_cb ();
1420	}	1129	}
1421		1130
1422	void	1131	int
1423	poll()	1132	poll()
1424	PROTOTYPE:	1133	PROTOTYPE:
1425	CODE:	1134	CODE:
1426	if (nreqs)
1427	{
1428	poll_wait ();	1135	poll_wait ();
1429	poll_cb (0);	1136	RETVAL = poll_cb ();
1430	}	1137	OUTPUT:
		1138	RETVAL
1431		1139
1432	int	1140	int
1433	poll_fileno()	1141	poll_fileno()
1434	PROTOTYPE:	1142	PROTOTYPE:
1435	CODE:	1143	CODE:
…		…
1439		1147
1440	int	1148	int
1441	poll_cb(...)	1149	poll_cb(...)
1442	PROTOTYPE:	1150	PROTOTYPE:
1443	CODE:	1151	CODE:
1444	RETVAL = poll_cb (0);	1152	RETVAL = poll_cb ();
1445	OUTPUT:	1153	OUTPUT:
1446	RETVAL	1154	RETVAL
1447		1155
1448	int
1449	poll_some(int max = 0)
1450	PROTOTYPE: $
1451	CODE:
1452	RETVAL = poll_cb (max);
1453	OUTPUT:
1454	RETVAL
1455
1456	void	1156	void
1457	poll_wait()	1157	poll_wait()
1458	PROTOTYPE:	1158	PROTOTYPE:
1459	CODE:	1159	CODE:
1460	if (nreqs)
1461	poll_wait ();	1160	poll_wait ();
1462		1161
1463	int	1162	int
1464	nreqs()	1163	nreqs()
1465	PROTOTYPE:	1164	PROTOTYPE:
1466	CODE:	1165	CODE:
1467	RETVAL = nreqs;	1166	RETVAL = eio_nreqs ();
1468	OUTPUT:	1167	OUTPUT:
1469	RETVAL	1168	RETVAL
1470		1169
		1170	int
		1171	nready()
		1172	PROTOTYPE:
		1173	CODE:
		1174	RETVAL = eio_nready ();
		1175	OUTPUT:
		1176	RETVAL
		1177
		1178	int
		1179	npending()
		1180	PROTOTYPE:
		1181	CODE:
		1182	RETVAL = eio_npending ();
		1183	OUTPUT:
		1184	RETVAL
		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
1471	PROTOTYPES: DISABLE	1217	PROTOTYPES: DISABLE
1472		1218
1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1219	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1474		1220
1475	void	1221	void
1476	cancel (aio_req_ornot req)	1222	cancel (aio_req_ornot req)
1477	CODE:	1223	CODE:
1478	req_cancel (req);	1224	eio_cancel (req);
1479		1225
1480	void	1226	void
1481	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1227	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1482	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
1483	SvREFCNT_dec (req->callback);	1237	SvREFCNT_dec (req->callback);
1484	req->callback = newSVsv (callback);	1238	req->callback = SvREFCNT_inc (cb_cv);
		1239	}
		1240	}
1485		1241
1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1242	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1487		1243
1488	void	1244	void
1489	add (aio_req grp, ...)	1245	add (aio_req grp, ...)
1490	PPCODE:	1246	PPCODE:
1491	{	1247	{
1492	int i;	1248	int i;
1493	aio_req req;
1494		1249
1495	if (grp->fd == 2)	1250	if (grp->int1 == 2)
1496	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");
1497		1252
1498	for (i = 1; i < items; ++i )	1253	for (i = 1; i < items; ++i )
1499	{	1254	{
		1255	aio_req req;
		1256
1500	if (GIMME_V != G_VOID)	1257	if (GIMME_V != G_VOID)
1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1258	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1502		1259
1503	req = SvAIO_REQ (ST (i));	1260	req = SvAIO_REQ (ST (i));
1504		1261
1505	if (req)	1262	if (req)
1506	{	1263	eio_grp_add (grp, req);
1507	++grp->length;
1508	req->grp = grp;
1509
1510	req->grp_prev = 0;
1511	req->grp_next = grp->grp_first;
1512
1513	if (grp->grp_first)
1514	grp->grp_first->grp_prev = req;
1515
1516	grp->grp_first = req;
1517	}
1518	}	1264	}
1519	}	1265	}
1520		1266
1521	void	1267	void
1522	cancel_subs (aio_req_ornot req)	1268	cancel_subs (aio_req_ornot req)
…		…
1526	void	1272	void
1527	result (aio_req grp, ...)	1273	result (aio_req grp, ...)
1528	CODE:	1274	CODE:
1529	{	1275	{
1530	int i;	1276	int i;
		1277	AV *av;
		1278
		1279	grp->errorno = errno;
		1280
1531	AV *av = newAV ();	1281	av = newAV ();
		1282	av_extend (av, items - 1);
1532		1283
1533	for (i = 1; i < items; ++i )	1284	for (i = 1; i < items; ++i )
1534	av_push (av, newSVsv (ST (i)));	1285	av_push (av, newSVsv (ST (i)));
1535		1286
1536	SvREFCNT_dec (grp->data);	1287	SvREFCNT_dec (grp->sv1);
1537	grp->data = (SV *)av;	1288	grp->sv1 = (SV *)av;
1538	}	1289	}
		1290
		1291	void
		1292	errno (aio_req grp, int errorno = errno)
		1293	CODE:
		1294	grp->errorno = errorno;
1539		1295
1540	void	1296	void
1541	limit (aio_req grp, int limit)	1297	limit (aio_req grp, int limit)
1542	CODE:	1298	CODE:
1543	grp->fd2 = limit;	1299	eio_grp_limit (grp, limit);
1544	aio_grp_feed (grp);
1545		1300
1546	void	1301	void
1547	feed (aio_req grp, SV *callback=&PL_sv_undef)	1302	feed (aio_req grp, SV *callback=&PL_sv_undef)
1548	CODE:	1303	CODE:
1549	{	1304	{
1550	SvREFCNT_dec (grp->fh2);	1305	SvREFCNT_dec (grp->sv2);
1551	grp->fh2 = newSVsv (callback);	1306	grp->sv2 = newSVsv (callback);
		1307	grp->feed = aio_grp_feed;
1552		1308
1553	if (grp->fd2 <= 0)	1309	if (grp->int2 <= 0)
1554	grp->fd2 = 2;	1310	grp->int2 = 2;
1555		1311
1556	aio_grp_feed (grp);	1312	eio_grp_limit (grp, grp->int2);
1557	}	1313	}
1558		1314

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