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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.76 by root, Thu Oct 26 12:38:04 2006 UTC vs.
Revision 1.149 by root, Tue Jun 30 07:33:58 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 int started, wanted;
138	static volatile int nreqs;
139	static int respipe [2];
140
141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143	#else
144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
145	#endif
146
147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
149
150	/* worker threads management */
151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
152
153	typedef struct worker {
154	/* locked by wrklock */
155	struct worker *prev, *next;
156
157	pthread_t tid;
158
159	/* locked by reslock, reqlock or wrklock */
160	aio_req req; /* currently processed request */
161	void *dbuf;
162	DIR *dirp;
163	} worker;
164
165	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
166
167	static void worker_clear (worker *wrk)
168	{
169	if (wrk->dirp)
170	{
171	closedir (wrk->dirp);
172	wrk->dirp = 0;
173	}
174
175	if (wrk->dbuf)
176	{
177	free (wrk->dbuf);
178	wrk->dbuf = 0;
179	}
180	}
181
182	static void worker_free (worker *wrk)
183	{
184	wrk->next->prev = wrk->prev;
185	wrk->prev->next = wrk->next;
186
187	free (wrk);
188	}
189
190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
192	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
193
194	/*
195	* a somewhat faster data structure might be nice, but
196	* with 8 priorities this actually needs <20 insns
197	* per shift, the most expensive operation.
198	*/
199	typedef struct {
200	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
201	int size;
202	} reqq;
203
204	static reqq req_queue;
205	static reqq res_queue;
206
207	int reqq_push (reqq *q, aio_req req)
208	{
209	int pri = req->pri;
210	req->next = 0;
211
212	if (q->qe[pri])
213	{
214	q->qe[pri]->next = req;
215	q->qe[pri] = req;
216	}
217	else
218	q->qe[pri] = q->qs[pri] = req;
219
220	return q->size++;
221	}
222
223	aio_req reqq_shift (reqq *q)
224	{
225	int pri;
226
227	if (!q->size)
228	return 0;
229
230	--q->size;
231
232	for (pri = NUM_PRI; pri--; )
233	{
234	aio_req req = q->qs[pri];
235
236	if (req)
237	{
238	if (!(q->qs[pri] = req->next))
239	q->qe[pri] = 0;
240
241	return req;
242	}
243	}
244
245	abort ();
246	}
247
248	static int poll_cb (int max);
249	static void req_invoke (aio_req req);
250	static void req_free (aio_req req);	165	static void req_destroy (aio_req req);
251	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	}
252		181
253	/* must be called at most once */	182	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
255	{	184	{
256	if (!req->self)	185	if (!req->self)
…		…
274	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	204	}
276		205
277	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
278	{	207	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	208	if (grp->sv2 && SvOK (grp->sv2))
280	{	209	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	210	dSP;
286		211
287	ENTER;	212	ENTER;
288	SAVETMPS;	213	SAVETMPS;
289	PUSHMARK (SP);	214	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
291	PUTBACK;	216	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	218	SPAGAIN;
294	FREETMPS;	219	FREETMPS;
295	LEAVE;	220	LEAVE;
296	}
297
298	/* stop if no progress has been made */
299	if (old_len == grp->length)
300	{
301	SvREFCNT_dec (grp->fh2);
302	grp->fh2 = 0;
303	break;
304	}
305	}	221	}
306	}	222	}
307		223
308	static void aio_grp_dec (aio_req grp)	224	static void req_submit (eio_req *req)
309	{	225	{
310	--grp->length;	226	eio_submit (req);
311		227
312	/* call feeder, if applicable */	228	if (expect_false (on_next_submit))
313	aio_grp_feed (grp);
314
315	/* finish, if done */
316	if (!grp->length && grp->fd)
317	{	229	{
318	req_invoke (grp);	230	dSP;
319	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);
320	}	238	}
321	}	239	}
322		240
323	static void poll_wait ()	241	static int req_invoke (eio_req *req)
324	{	242	{
325	fd_set rfd;	243	dSP;
326		244
327	while (nreqs)	245	if (req->flags & FLAG_SV2_RO_OFF)
		246	SvREADONLY_off (req->sv2);
		247
		248	if (!EIO_CANCELLED (req) && req->callback)
328	{	249	{
329	int size;
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331	LOCK (reslock);
332	#endif
333	size = res_queue.size;
334	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335	UNLOCK (reslock);
336	#endif
337
338	if (size)
339	return;
340
341	FD_ZERO(&rfd);
342	FD_SET(respipe [0], &rfd);
343
344	select (respipe [0] + 1, &rfd, 0, 0, 0);
345	}
346	}
347
348	static void req_invoke (aio_req req)
349	{
350	dSP;
351
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
353	{
354	errno = req->errorno;
355
356	ENTER;	250	ENTER;
357	SAVETMPS;	251	SAVETMPS;
358	PUSHMARK (SP);	252	PUSHMARK (SP);
359	EXTEND (SP, 1);	253	EXTEND (SP, 1);
360		254
361	switch (req->type)	255	switch (req->type)
362	{	256	{
363	case REQ_READDIR:	257	case EIO_READDIR:
364	{	258	{
365	SV *rv = &PL_sv_undef;	259	SV *rv = &PL_sv_undef;
366		260
367	if (req->result >= 0)	261	if (req->result >= 0)
368	{	262	{
369	int i;	263	int i;
370	char *buf = req->data2ptr;	264	char *names = (char *)req->ptr2;
		265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371	AV *av = newAV ();	266	AV *av = newAV ();
372		267
373	av_extend (av, req->result - 1);	268	av_extend (av, req->result - 1);
374		269
375	for (i = 0; i < req->result; ++i)	270	for (i = 0; i < req->result; ++i)
376	{	271	{
377	SV *sv = newSVpv (buf, 0);	272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378		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
379	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);
380	buf += SvCUR (sv) + 1;	304	names += SvCUR (name) + 1;
		305	}
381	}	306	}
382		307
383	rv = sv_2mortal (newRV_noinc ((SV *)av));	308	rv = sv_2mortal (newRV_noinc ((SV *)av));
384	}	309	}
385		310
386	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))));
387	}	315	}
388	break;	316	break;
389		317
390	case REQ_OPEN:	318	case EIO_OPEN:
391	{	319	{
392	/* convert fd to fh */	320	/* convert fd to fh */
393	SV *fh;	321	SV *fh = &PL_sv_undef;
394		322
395	PUSHs (sv_2mortal (newSViv (req->result)));	323	if (req->result >= 0)
396	PUTBACK;	324	{
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	325	GV *gv = (GV *)sv_newmortal ();
398	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);
399		332
400	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	);
401		340
		341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		342	fh = (SV *)gv;
		343	}
		344
402	PUSHMARK (SP);	345	PUSHs (fh);
403	XPUSHs (sv_2mortal (fh));
404	}	346	}
405	break;	347	break;
406		348
407	case REQ_GROUP:	349	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	350	req->int1 = 2; /* mark group as finished */
409		351
410	if (req->data)	352	if (req->sv1)
411	{	353	{
412	int i;	354	int i;
413	AV *av = (AV *)req->data;	355	AV *av = (AV *)req->sv1;
414		356
415	EXTEND (SP, AvFILL (av) + 1);	357	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	358	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	359	PUSHs (*av_fetch (av, i, 0));
418	}	360	}
419	break;	361	break;
420		362
421	case REQ_NOP:	363	case EIO_NOP:
422	case REQ_BUSY:	364	case EIO_BUSY:
423	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 */
424		395
425	default:	396	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	397	PUSHs (sv_2mortal (newSViv (req->result)));
427	break;	398	break;
428	}	399	}
429		400
		401	errno = req->errorno;
430		402
431	PUTBACK;	403	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	SPAGAIN;	405	SPAGAIN;
434		406
435	FREETMPS;	407	FREETMPS;
436	LEAVE;	408	LEAVE;
		409
		410	PUTBACK;
437	}	411	}
438		412
439	if (req->grp)	413	return !!SvTRUE (ERRSV);
440	{
441	aio_req grp = req->grp;
442
443	/* unlink request */
444	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
445	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
446
447	if (grp->grp_first == req)
448	grp->grp_first = req->grp_next;
449
450	aio_grp_dec (grp);
451	}
452
453	if (SvTRUE (ERRSV))
454	{
455	req_free (req);
456	croak (0);
457	}
458	}	414	}
459		415
460	static void req_free (aio_req req)	416	static void req_destroy (aio_req req)
461	{	417	{
462	if (req->self)	418	if (req->self)
463	{	419	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	420	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	421	SvREFCNT_dec (req->self);
466	}	422	}
467		423
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	424	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	425	SvREFCNT_dec (req->sv2);
471	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476		427
477	Safefree (req);	428	Safefree (req);
478	}	429	}
479		430
480	static void req_cancel_subs (aio_req grp)	431	static void req_cancel_subs (aio_req grp)
481	{	432	{
482	aio_req sub;	433	aio_req sub;
483		434
484	if (grp->type != REQ_GROUP)	435	if (grp->type != EIO_GROUP)
485	return;	436	return;
486		437
487	SvREFCNT_dec (grp->fh2);	438	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	439	grp->sv2 = 0;
489		440
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	441	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	442	}
493		443
494	static void req_cancel (aio_req req)	444	#ifdef USE_SOCKETS_AS_HANDLES
495	{	445	# define TO_SOCKET(x) (win32_get_osfhandle (x))
496	req->flags |= FLAG_CANCELLED;	446	#else
		447	# define TO_SOCKET(x) (x)
		448	#endif
497		449
498	req_cancel_subs (req);	450	static void
499	}	451	create_respipe (void)
500
501	static int poll_cb (int max)
502	{	452	{
503	dSP;	453	int old_readfd = respipe [0];
504	int count = 0;
505	int do_croak = 0;
506	aio_req req;
507		454
508	while (max <= 0 || count < max)	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)
509	{	466	{
510	LOCK (reslock);	467	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
511	req = reqq_shift (&res_queue);	468	croak ("unable to initialize result pipe(2)");
512		469
513	if (req)	470	respipe_close (respipe [0]);
514	{	471	respipe [0] = old_readfd;
515	if (!res_queue.size)
516	{
517	/* read any signals sent by the worker threads */
518	char buf [32];
519	while (read (respipe [0], buf, 32) == 32)
520	;
521	}
522	}
523
524	UNLOCK (reslock);
525
526	if (!req)
527	break;
528
529	--nreqs;
530
531	if (req->type == REQ_QUIT)
532	started--;
533	else if (req->type == REQ_GROUP && req->length)
534	{
535	req->fd = 1; /* mark request as delayed */
536	continue;
537	}
538	else
539	{
540	if (req->type == REQ_READ)
541	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544	SvREADONLY_off (req->data);
545
546	if (req->statdata)
547	{
548	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549	PL_laststatval = req->result;
550	PL_statcache = *(req->statdata);
551	}
552
553	req_invoke (req);
554
555	count++;
556	}
557
558	req_free (req);
559	}	472	}
560		473
561	return count;	474	#ifdef _WIN32
562	}	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)");
563		483
564	static void *aio_proc(void *arg);	484	respipe_osf [0] = TO_SOCKET (respipe [0]);
		485	respipe_osf [1] = TO_SOCKET (respipe [1]);
		486	}
565		487
566	static void start_thread (void)	488	static void poll_wait (void)
567	{	489	{
568	sigset_t fullsigset, oldsigset;	490	fd_set rfd;
569	pthread_attr_t attr;
570		491
571	worker *wrk = calloc (1, sizeof (worker));	492	while (eio_nreqs ())
572
573	if (!wrk)
574	croak ("unable to allocate worker thread data");
575
576	pthread_attr_init (&attr);
577	pthread_attr_setstacksize (&attr, STACKSIZE);
578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580	sigfillset (&fullsigset);
581
582	LOCK (wrklock);
583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584
585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
586	{	493	{
587	wrk->prev = &wrk_first;	494	int size;
588	wrk->next = wrk_first.next;	495
589	wrk_first.next->prev = wrk;	496	X_LOCK (reslock);
590	wrk_first.next = wrk;	497	size = res_queue.size;
591	started++;	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);
592	}	509	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	510	}
599		511
600	static void req_send (aio_req req)	512	static int poll_cb (void)
601	{	513	{
602	while (started < wanted && nreqs >= started)	514	for (;;)
603	start_thread ();
604
605	++nreqs;
606
607	LOCK (reqlock);
608	reqq_push (&req_queue, req);
609	pthread_cond_signal (&reqwait);
610	UNLOCK (reqlock);
611	}
612
613	static void end_thread (void)
614	{
615	aio_req req;
616
617	Newz (0, req, 1, aio_cb);
618
619	req->type = REQ_QUIT;
620	req->pri = PRI_MAX + PRI_BIAS;
621
622	req_send (req);
623	}
624
625	static void min_parallel (int nthreads)
626	{
627	if (wanted < nthreads)
628	wanted = nthreads;
629	}
630
631	static void max_parallel (int nthreads)
632	{
633	int cur = started;
634
635	if (wanted > nthreads)
636	wanted = nthreads;
637
638	while (cur > wanted)
639	{	515	{
640	end_thread ();	516	int res = eio_poll ();
641	cur--;	517
		518	if (res > 0)
		519	croak (0);
		520
		521	if (!max_outstanding || max_outstanding > eio_nreqs ())
		522	return res;
		523
		524	poll_wait ();
642	}	525	}
643
644	while (started > wanted)
645	{
646	poll_wait ();
647	poll_cb (0);
648	}
649	}	526	}
650		527
651	static void create_pipe ()	528	static void atfork_child (void)
652	{	529	{
653	if (pipe (respipe))	530	create_respipe ();
654	croak ("unable to initialize result pipe");
655
656	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
657	croak ("cannot set result pipe to nonblocking mode");
658
659	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
660	croak ("cannot set result pipe to nonblocking mode");
661	}	531	}
662		532
663	/*****************************************************************************/	533	static SV *
664	/* work around various missing functions */	534	get_cb (SV *cb_sv)
665
666	#if !HAVE_PREADWRITE
667	# define pread aio_pread
668	# define pwrite aio_pwrite
669
670	/*
671	* make our pread/pwrite safe against themselves, but not against
672	* normal read/write by using a mutex. slows down execution a lot,
673	* but that's your problem, not mine.
674	*/
675	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
676
677	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
678	{	535	{
679	ssize_t res;	536	HV *st;
680	off_t ooffset;	537	GV *gvp;
		538	CV *cv;
681		539
682	LOCK (preadwritelock);	540	if (!SvOK (cb_sv))
683	ooffset = lseek (fd, 0, SEEK_CUR);
684	lseek (fd, offset, SEEK_SET);
685	res = read (fd, buf, count);
686	lseek (fd, ooffset, SEEK_SET);
687	UNLOCK (preadwritelock);
688
689	return res;
690	}
691
692	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
693	{
694	ssize_t res;
695	off_t ooffset;
696
697	LOCK (preadwritelock);
698	ooffset = lseek (fd, 0, SEEK_CUR);
699	lseek (fd, offset, SEEK_SET);
700	res = write (fd, buf, count);
701	lseek (fd, offset, SEEK_SET);
702	UNLOCK (preadwritelock);
703
704	return res;
705	}
706	#endif
707
708	#if !HAVE_FDATASYNC
709	# define fdatasync fsync
710	#endif
711
712	#if !HAVE_READAHEAD
713	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
714
715	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
716	{
717	dBUF;
718
719	while (count > 0)
720	{
721	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
722
723	pread (fd, aio_buf, len, offset);
724	offset += len;
725	count -= len;
726	}
727
728	errno = 0;
729	}
730
731	#endif
732
733	#if !HAVE_READDIR_R
734	# define readdir_r aio_readdir_r
735
736	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
737
738	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
739	{
740	struct dirent *e;
741	int errorno;
742
743	LOCK (readdirlock);
744
745	e = readdir (dirp);
746	errorno = errno;
747
748	if (e)
749	{
750	*res = ent;
751	strcpy (ent->d_name, e->d_name);
752	}
753	else
754	*res = 0;
755
756	UNLOCK (readdirlock);
757
758	errno = errorno;
759	return e ? 0 : -1;
760	}
761	#endif
762
763	/* sendfile always needs emulation */
764	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
765	{
766	ssize_t res;
767
768	if (!count)
769	return 0;	541	return 0;
770		542
771	#if HAVE_SENDFILE	543	cv = sv_2cv (cb_sv, &st, &gvp, 0);
772	# if __linux
773	res = sendfile (ofd, ifd, &offset, count);
774		544
775	# elif __freebsd	545	if (!cv)
776	/*	546	croak ("IO::AIO callback must be undef or a CODE reference");
777	* Of course, the freebsd sendfile is a dire hack with no thoughts
778	* wasted on making it similar to other I/O functions.
779	*/
780	{
781	off_t sbytes;
782	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
783		547
784	if (res < 0 && sbytes)	548	return (SV *)cv;
785	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
786	res = sbytes;
787	}
788
789	# elif __hpux
790	res = sendfile (ofd, ifd, offset, count, 0, 0);
791
792	# elif __solaris
793	{
794	struct sendfilevec vec;
795	size_t sbytes;
796
797	vec.sfv_fd = ifd;
798	vec.sfv_flag = 0;
799	vec.sfv_off = offset;
800	vec.sfv_len = count;
801
802	res = sendfilev (ofd, &vec, 1, &sbytes);
803
804	if (res < 0 && sbytes)
805	res = sbytes;
806	}
807
808	# endif
809	#else
810	res = -1;
811	errno = ENOSYS;
812	#endif
813
814	if (res < 0
815	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
816	#if __solaris
817	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
818	#endif
819	)
820	)
821	{
822	/* emulate sendfile. this is a major pain in the ass */
823	dBUF;
824
825	res = 0;
826
827	while (count)
828	{
829	ssize_t cnt;
830
831	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
832
833	if (cnt <= 0)
834	{
835	if (cnt && !res) res = -1;
836	break;
837	}
838
839	cnt = write (ofd, aio_buf, cnt);
840
841	if (cnt <= 0)
842	{
843	if (cnt && !res) res = -1;
844	break;
845	}
846
847	offset += cnt;
848	res += cnt;
849	count -= cnt;
850	}
851	}
852
853	return res;
854	}
855
856	/* read a full directory */
857	static void scandir_ (aio_req req, worker *self)
858	{
859	DIR *dirp;
860	union
861	{
862	struct dirent d;
863	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
864	} *u;
865	struct dirent *entp;
866	char *name, *names;
867	int memlen = 4096;
868	int memofs = 0;
869	int res = 0;
870	int errorno;
871
872	LOCK (wrklock);
873	self->dirp = dirp = opendir (req->dataptr);
874	self->dbuf = u = malloc (sizeof (*u));
875	req->data2ptr = names = malloc (memlen);
876	UNLOCK (wrklock);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}
909	}
910
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916
917	/*****************************************************************************/
918
919	static void *aio_proc (void *thr_arg)
920	{
921	aio_req req;
922	int type;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}	549	}
1069		550
1070	#define dREQ \	551	#define dREQ \
		552	SV *cb_cv; \
1071	aio_req req; \	553	aio_req req; \
1072	int req_pri = next_pri; \	554	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	555	next_pri = EIO_PRI_DEFAULT; \
1074	\	556	\
1075	if (SvOK (callback) && !SvROK (callback)) \	557	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	558	\
1078	Newz (0, req, 1, aio_cb); \	559	Newz (0, req, 1, eio_req); \
1079	if (!req) \	560	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	561	croak ("out of memory during eio_req allocation"); \
1081	\	562	\
1082	req->callback = newSVsv (callback); \	563	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	564	req->pri = req_pri
1084		565
1085	#define REQ_SEND \	566	#define REQ_SEND \
		567	PUTBACK; \
1086	req_send (req); \	568	req_submit (req); \
		569	SPAGAIN; \
1087	\	570	\
1088	if (GIMME_V != G_VOID) \	571	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	572	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090		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
1091	MODULE = IO::AIO PACKAGE = IO::AIO	585	MODULE = IO::AIO PACKAGE = IO::AIO
1092		586
1093	PROTOTYPES: ENABLE	587	PROTOTYPES: ENABLE
1094		588
1095	BOOT:	589	BOOT:
1096	{	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
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	633	stash = gv_stashpv ("IO::AIO", 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101		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
1102	create_pipe ();	638	create_respipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105		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);
		645	}
		646
1106	void	647	void
1107	min_parallel (nthreads)	648	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	649	PROTOTYPE: $
		650	CODE:
		651	eio_set_max_poll_reqs (nreqs);
1110		652
1111	void	653	void
1112	max_parallel (nthreads)	654	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	655	PROTOTYPE: $
		656	CODE:
		657	eio_set_max_poll_time (nseconds);
1115		658
1116	void	659	void
		660	min_parallel (int nthreads)
		661	PROTOTYPE: $
		662	CODE:
		663	eio_set_min_parallel (nthreads);
		664
		665	void
		666	max_parallel (int nthreads)
		667	PROTOTYPE: $
		668	CODE:
		669	eio_set_max_parallel (nthreads);
		670
		671	void
		672	max_idle (int nthreads)
		673	PROTOTYPE: $
		674	CODE:
		675	eio_set_max_idle (nthreads);
		676
		677	void
		678	max_outstanding (int maxreqs)
		679	PROTOTYPE: $
		680	CODE:
		681	max_outstanding = maxreqs;
		682
		683	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	684	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1123	PPCODE:	686	PPCODE:
1124	{	687	{
1125	dREQ;	688	dREQ;
1126		689
1127	req->type = REQ_OPEN;	690	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	691	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	692	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	693	req->int1 = flags;
1131	req->mode = mode;	694	req->int2 = mode;
1132		695
1133	REQ_SEND;	696	REQ_SEND;
1134	}	697	}
1135		698
1136	void	699	void
1137	aio_close (fh,callback=&PL_sv_undef)	700	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	701	PROTOTYPE: $;$
1141	ALIAS:	702	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	703	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	705	PPCODE:
1146	{	706	{
		707	int fd = extract_fd (fh, 0);
1147	dREQ;	708	dREQ;
1148		709
1149	req->type = ix;	710	req->type = ix;
1150	req->fh = newSVsv (fh);	711	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	712	req->int1 = fd;
1152		713
1153	REQ_SEND (req);	714	REQ_SEND (req);
1154	}	715	}
1155		716
1156	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: $$$$;$
		720	PPCODE:
		721	{
		722	int fd = extract_fd (fh, 0);
		723	dREQ;
		724
		725	req->type = EIO_SYNC_FILE_RANGE;
		726	req->sv1 = newSVsv (fh);
		727	req->int1 = fd;
		728	req->offs = offset;
		729	req->size = nbytes;
		730	req->int2 = flags;
		731
		732	REQ_SEND (req);
		733	}
		734
		735	void
		736	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		737	PROTOTYPE: $;$
		738	PPCODE:
		739	{
		740	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		741	int fd = extract_fd (fh, 0);
		742	dREQ;
		743
		744	if (close_pipe < 0)
		745	{
		746	int pipefd [2];
		747
		748	if (pipe (pipefd) < 0
		749	|| close (pipefd [1]) < 0
		750	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		751	abort (); /*D*/
		752
		753	close_pipe = pipefd [0];
		754	}
		755
		756	req->type = EIO_DUP2;
		757	req->int1 = close_pipe;
		758	req->sv2 = newSVsv (fh);
		759	req->int2 = fd;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	765	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	766	ALIAS:
1165	aio_read = REQ_READ	767	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	768	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	769	PROTOTYPE: $$$$$;$
1168	PPCODE:	770	PPCODE:
1169	{	771	{
1170	aio_req req;
1171	STRLEN svlen;	772	STRLEN svlen;
		773	int fd = extract_fd (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	774	char *svptr = SvPVbyte (data, svlen);
1173		775	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		776
1177	if (dataoffset < 0)	777	if (dataoffset < 0)
1178	dataoffset += svlen;	778	dataoffset += svlen;
1179		779
1180	if (dataoffset < 0 || dataoffset > svlen)	780	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	781	croak ("dataoffset outside of data scalar");
1182		782
1183	if (ix == REQ_WRITE)	783	if (ix == EIO_WRITE)
1184	{	784	{
1185	/* write: check length and adjust. */	785	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	786	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	787	len = svlen - dataoffset;
1188	}	788	}
1189	else	789	else
1190	{	790	{
1191	/* read: grow scalar as necessary */	791	/* read: check type and grow scalar as necessary */
		792	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	793	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	794	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		795
1198	{	796	{
1199	dREQ;	797	dREQ;
1200		798
1201	req->type = ix;	799	req->type = ix;
1202	req->fh = newSVsv (fh);	800	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	801	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	802	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	803	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	804	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	805	req->ptr2 = (char *)svptr + dataoffset;
		806	req->stroffset = dataoffset;
1209		807
1210	if (!SvREADONLY (data))	808	if (!SvREADONLY (data))
1211	{	809	{
1212	SvREADONLY_on (data);	810	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	811	req->flags |= FLAG_SV2_RO_OFF;
1214	}	812	}
1215		813
1216	REQ_SEND;	814	REQ_SEND;
1217	}	815	}
1218	}	816	}
1219		817
1220	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
1221	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)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$	835	PROTOTYPE: $$$$;$
1228	PPCODE:	836	PPCODE:
1229	{	837	{
		838	int ifd = extract_fd (in_fh , 0);
		839	int ofd = extract_fd (out_fh, 0);
1230	dREQ;	840	dREQ;
1231		841
1232	req->type = REQ_SENDFILE;	842	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	843	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	844	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	845	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	846	req->int2 = ifd;
1237	req->offset = in_offset;	847	req->offs = in_offset;
1238	req->length = length;	848	req->size = length;
1239		849
1240	REQ_SEND;	850	REQ_SEND;
1241	}	851	}
1242		852
1243	void	853	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	854	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	855	PROTOTYPE: $$$;$
1250	PPCODE:	856	PPCODE:
1251	{	857	{
		858	int fd = extract_fd (fh, 0);
1252	dREQ;	859	dREQ;
1253		860
1254	req->type = REQ_READAHEAD;	861	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	862	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	863	req->int1 = fd;
1257	req->offset = offset;	864	req->offs = offset;
1258	req->length = length;	865	req->size = length;
1259		866
1260	REQ_SEND;	867	REQ_SEND;
1261	}	868	}
1262		869
1263	void	870	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	871	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	872	ALIAS:
1268	aio_stat = REQ_STAT	873	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	874	aio_lstat = EIO_LSTAT
1270	PPCODE:	875	PPCODE:
1271	{	876	{
1272	dREQ;	877	dREQ;
1273		878
1274	New (0, req->statdata, 1, Stat_t);	879	req->sv1 = newSVsv (fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280		880
1281	if (SvPOK (fh_or_path))	881	if (SvPOK (req->sv1))
1282	{	882	{
1283	req->type = ix;	883	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	884	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	885	}
1287	else	886	else
1288	{	887	{
1289	req->type = REQ_FSTAT;	888	req->type = EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	890	}
1293		891
1294	REQ_SEND;	892	REQ_SEND;
1295	}	893	}
1296		894
1297	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
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1010	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1011	ALIAS:
1302	aio_unlink = REQ_UNLINK	1012	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1013	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1014	aio_readdir = EIO_READDIR
1305	PPCODE:	1015	PPCODE:
1306	{	1016	{
1307	dREQ;	1017	dREQ;
1308		1018
1309	req->type = ix;	1019	req->type = ix;
1310	req->data = newSVsv (pathname);	1020	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
1312		1022
1313	REQ_SEND;	1023	REQ_SEND;
1314	}	1024	}
1315		1025
1316	void	1026	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1027	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1028	ALIAS:
1322	aio_link = REQ_LINK	1029	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1030	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1031	aio_rename = EIO_RENAME
1325	PPCODE:	1032	PPCODE:
1326	{	1033	{
1327	dREQ;	1034	dREQ;
1328		1035
1329	req->type = ix;	1036	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1037	req->sv1 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1038	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	1039	req->sv2 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1040	req->ptr2 = SvPVbyte_nolen (req->sv2);
1334		1041
1335	REQ_SEND;	1042	REQ_SEND;
1336	}	1043	}
1337		1044
1338	void	1045	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1046	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1047	PPCODE:
1343	{	1048	{
1344	dREQ;	1049	dREQ;
1345		1050
1346	req->type = REQ_BUSY;	1051	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1052	req->sv1 = newSVsv (pathname);
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
1349		1054	req->int2 = (mode_t)mode;
		1055	req->offs = dev;
		1056
1350	REQ_SEND;	1057	REQ_SEND;
1351	}	1058	}
1352		1059
1353	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
1354	aio_group (callback=&PL_sv_undef)	1073	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	1074	PROTOTYPE: ;$
1357	PPCODE:	1075	PPCODE:
1358	{	1076	{
1359	dREQ;	1077	dREQ;
1360		1078
1361	req->type = REQ_GROUP;	1079	req->type = EIO_GROUP;
		1080
1362	req_send (req);	1081	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1082	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1365	}	1083	}
1366		1084
1367	void	1085	void
1368	aio_nop (callback=&PL_sv_undef)	1086	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1087	ALIAS:
		1088	aio_nop = EIO_NOP
		1089	aio_sync = EIO_SYNC
1370	PPCODE:	1090	PPCODE:
1371	{	1091	{
1372	dREQ;	1092	dREQ;
1373		1093
1374	req->type = REQ_NOP;	1094	req->type = ix;
1375		1095
1376	REQ_SEND;	1096	REQ_SEND;
1377	}	1097	}
1378		1098
1379	void	1099	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1100	aioreq_pri (int pri = 0)
1381	CODE:	1101	PROTOTYPE: ;$
		1102	CODE:
		1103	RETVAL = next_pri;
		1104	if (items > 0)
		1105	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1106	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1107	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1108	next_pri = pri;
		1109	}
		1110	OUTPUT:
		1111	RETVAL
1385		1112
1386	void	1113	void
1387	aioreq_nice (int nice = 0)	1114	aioreq_nice (int nice = 0)
1388	CODE:	1115	CODE:
1389	nice = next_pri - nice;	1116	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1117	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1118	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1119	next_pri = nice;
1393		1120
1394	void	1121	void
1395	flush ()	1122	flush ()
1396	PROTOTYPE:	1123	PROTOTYPE:
1397	CODE:	1124	CODE:
1398	while (nreqs)	1125	while (eio_nreqs ())
1399	{	1126	{
1400	poll_wait ();	1127	poll_wait ();
1401	poll_cb (0);	1128	poll_cb ();
1402	}	1129	}
1403		1130
1404	void	1131	int
1405	poll()	1132	poll()
1406	PROTOTYPE:	1133	PROTOTYPE:
1407	CODE:	1134	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1135	poll_wait ();
1411	poll_cb (0);	1136	RETVAL = poll_cb ();
1412	}	1137	OUTPUT:
		1138	RETVAL
1413		1139
1414	int	1140	int
1415	poll_fileno()	1141	poll_fileno()
1416	PROTOTYPE:	1142	PROTOTYPE:
1417	CODE:	1143	CODE:
…		…
1421		1147
1422	int	1148	int
1423	poll_cb(...)	1149	poll_cb(...)
1424	PROTOTYPE:	1150	PROTOTYPE:
1425	CODE:	1151	CODE:
1426	RETVAL = poll_cb (0);	1152	RETVAL = poll_cb ();
1427	OUTPUT:	1153	OUTPUT:
1428	RETVAL	1154	RETVAL
1429		1155
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:
1436	RETVAL
1437
1438	void	1156	void
1439	poll_wait()	1157	poll_wait()
1440	PROTOTYPE:	1158	PROTOTYPE:
1441	CODE:	1159	CODE:
1442	if (nreqs)
1443	poll_wait ();	1160	poll_wait ();
1444		1161
1445	int	1162	int
1446	nreqs()	1163	nreqs()
1447	PROTOTYPE:	1164	PROTOTYPE:
1448	CODE:	1165	CODE:
1449	RETVAL = nreqs;	1166	RETVAL = eio_nreqs ();
1450	OUTPUT:	1167	OUTPUT:
1451	RETVAL	1168	RETVAL
1452		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: $$$$
		1197	CODE:
		1198	{
		1199	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1200	RETVAL = posix_fadvise (fh, offset, length, advice);
		1201	#else
		1202	RETVAL = errno = ENOSYS;
		1203	#endif
		1204	}
		1205	OUTPUT:
		1206	RETVAL
		1207
		1208	ssize_t
		1209	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1210	PROTOTYPE: $$$$
		1211	CODE:
		1212	eio_sendfile_sync (ofh, ifh, offset, count);
		1213
		1214	void _on_next_submit (SV *cb)
		1215	CODE:
		1216	SvREFCNT_dec (on_next_submit);
		1217	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1218
1453	PROTOTYPES: DISABLE	1219	PROTOTYPES: DISABLE
1454		1220
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1221	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1222
1457	void	1223	void
1458	cancel (aio_req_ornot req)	1224	cancel (aio_req_ornot req)
1459	CODE:	1225	CODE:
1460	req_cancel (req);	1226	eio_cancel (req);
1461		1227
1462	void	1228	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1229	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1464	CODE:	1230	PPCODE:
		1231	{
		1232	if (GIMME_V != G_VOID)
		1233	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1234
		1235	if (items > 1)
		1236	{
		1237	SV *cb_cv = get_cb (callback);
		1238
1465	SvREFCNT_dec (req->callback);	1239	SvREFCNT_dec (req->callback);
1466	req->callback = newSVsv (callback);	1240	req->callback = SvREFCNT_inc (cb_cv);
		1241	}
		1242	}
1467		1243
1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1244	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469		1245
1470	void	1246	void
1471	add (aio_req grp, ...)	1247	add (aio_req grp, ...)
1472	PPCODE:	1248	PPCODE:
1473	{	1249	{
1474	int i;	1250	int i;
1475	aio_req req;
1476		1251
1477	if (grp->fd == 2)	1252	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1253	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1254
1480	for (i = 1; i < items; ++i )	1255	for (i = 1; i < items; ++i )
1481	{	1256	{
		1257	aio_req req;
		1258
1482	if (GIMME_V != G_VOID)	1259	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1260	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		1261
1485	req = SvAIO_REQ (ST (i));	1262	req = SvAIO_REQ (ST (i));
1486		1263
1487	if (req)	1264	if (req)
1488	{	1265	eio_grp_add (grp, req);
1489	++grp->length;
1490	req->grp = grp;
1491
1492	req->grp_prev = 0;
1493	req->grp_next = grp->grp_first;
1494
1495	if (grp->grp_first)
1496	grp->grp_first->grp_prev = req;
1497
1498	grp->grp_first = req;
1499	}
1500	}	1266	}
1501	}	1267	}
1502		1268
1503	void	1269	void
1504	cancel_subs (aio_req_ornot req)	1270	cancel_subs (aio_req_ornot req)
…		…
1508	void	1274	void
1509	result (aio_req grp, ...)	1275	result (aio_req grp, ...)
1510	CODE:	1276	CODE:
1511	{	1277	{
1512	int i;	1278	int i;
		1279	AV *av;
		1280
		1281	grp->errorno = errno;
		1282
1513	AV *av = newAV ();	1283	av = newAV ();
		1284	av_extend (av, items - 1);
1514		1285
1515	for (i = 1; i < items; ++i )	1286	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1287	av_push (av, newSVsv (ST (i)));
1517		1288
1518	SvREFCNT_dec (grp->data);	1289	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1290	grp->sv1 = (SV *)av;
1520	}	1291	}
		1292
		1293	void
		1294	errno (aio_req grp, int errorno = errno)
		1295	CODE:
		1296	grp->errorno = errorno;
1521		1297
1522	void	1298	void
1523	limit (aio_req grp, int limit)	1299	limit (aio_req grp, int limit)
1524	CODE:	1300	CODE:
1525	grp->fd2 = limit;	1301	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		1302
1528	void	1303	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1304	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1305	CODE:
1531	{	1306	{
1532	SvREFCNT_dec (grp->fh2);	1307	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1308	grp->sv2 = newSVsv (callback);
		1309	grp->feed = aio_grp_feed;
1534		1310
1535	if (grp->fd2 <= 0)	1311	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1312	grp->int2 = 2;
1537		1313
1538	aio_grp_feed (grp);	1314	eio_grp_limit (grp, grp->int2);
1539	}	1315	}
1540		1316

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